danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | #include "v8.h" |
| 29 | |
| 30 | #if defined(V8_TARGET_ARCH_ARM) |
| 31 | |
| 32 | #include "bootstrapper.h" |
danno@chromium.org | f005df6 | 2013-04-30 16:36:45 +0000 | [diff] [blame] | 33 | #include "builtins-decls.h" |
ricow@chromium.org | d236f4d | 2010-09-01 06:52:08 +0000 | [diff] [blame] | 34 | #include "code-stubs.h" |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 35 | #include "regexp-macro-assembler.h" |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 36 | #include "stub-cache.h" |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 37 | |
| 38 | namespace v8 { |
| 39 | namespace internal { |
| 40 | |
| 41 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 42 | void FastCloneShallowArrayStub::InitializeInterfaceDescriptor( |
| 43 | Isolate* isolate, |
| 44 | CodeStubInterfaceDescriptor* descriptor) { |
| 45 | static Register registers[] = { r3, r2, r1 }; |
| 46 | descriptor->register_param_count_ = 3; |
| 47 | descriptor->register_params_ = registers; |
| 48 | descriptor->stack_parameter_count_ = NULL; |
| 49 | descriptor->deoptimization_handler_ = |
| 50 | Runtime::FunctionForId(Runtime::kCreateArrayLiteralShallow)->entry; |
| 51 | } |
| 52 | |
| 53 | |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 54 | void FastCloneShallowObjectStub::InitializeInterfaceDescriptor( |
| 55 | Isolate* isolate, |
| 56 | CodeStubInterfaceDescriptor* descriptor) { |
| 57 | static Register registers[] = { r3, r2, r1, r0 }; |
| 58 | descriptor->register_param_count_ = 4; |
| 59 | descriptor->register_params_ = registers; |
| 60 | descriptor->stack_parameter_count_ = NULL; |
| 61 | descriptor->deoptimization_handler_ = |
| 62 | Runtime::FunctionForId(Runtime::kCreateObjectLiteralShallow)->entry; |
| 63 | } |
| 64 | |
| 65 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 66 | void KeyedLoadFastElementStub::InitializeInterfaceDescriptor( |
| 67 | Isolate* isolate, |
| 68 | CodeStubInterfaceDescriptor* descriptor) { |
| 69 | static Register registers[] = { r1, r0 }; |
| 70 | descriptor->register_param_count_ = 2; |
| 71 | descriptor->register_params_ = registers; |
| 72 | descriptor->deoptimization_handler_ = |
mstarzinger@chromium.org | e3b8d0f | 2013-02-01 09:06:41 +0000 | [diff] [blame] | 73 | FUNCTION_ADDR(KeyedLoadIC_MissFromStubFailure); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 74 | } |
| 75 | |
| 76 | |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 77 | void LoadFieldStub::InitializeInterfaceDescriptor( |
| 78 | Isolate* isolate, |
| 79 | CodeStubInterfaceDescriptor* descriptor) { |
| 80 | static Register registers[] = { r0 }; |
| 81 | descriptor->register_param_count_ = 1; |
| 82 | descriptor->register_params_ = registers; |
| 83 | descriptor->stack_parameter_count_ = NULL; |
| 84 | descriptor->deoptimization_handler_ = NULL; |
| 85 | } |
| 86 | |
| 87 | |
| 88 | void KeyedLoadFieldStub::InitializeInterfaceDescriptor( |
| 89 | Isolate* isolate, |
| 90 | CodeStubInterfaceDescriptor* descriptor) { |
| 91 | static Register registers[] = { r1 }; |
| 92 | descriptor->register_param_count_ = 1; |
| 93 | descriptor->register_params_ = registers; |
| 94 | descriptor->stack_parameter_count_ = NULL; |
| 95 | descriptor->deoptimization_handler_ = NULL; |
| 96 | } |
| 97 | |
| 98 | |
jkummerow@chromium.org | 7bd87f0 | 2013-03-20 18:06:29 +0000 | [diff] [blame] | 99 | void KeyedStoreFastElementStub::InitializeInterfaceDescriptor( |
| 100 | Isolate* isolate, |
| 101 | CodeStubInterfaceDescriptor* descriptor) { |
| 102 | static Register registers[] = { r2, r1, r0 }; |
| 103 | descriptor->register_param_count_ = 3; |
| 104 | descriptor->register_params_ = registers; |
| 105 | descriptor->deoptimization_handler_ = |
| 106 | FUNCTION_ADDR(KeyedStoreIC_MissFromStubFailure); |
| 107 | } |
| 108 | |
| 109 | |
danno@chromium.org | 94b0d6f | 2013-02-04 13:33:20 +0000 | [diff] [blame] | 110 | void TransitionElementsKindStub::InitializeInterfaceDescriptor( |
| 111 | Isolate* isolate, |
| 112 | CodeStubInterfaceDescriptor* descriptor) { |
| 113 | static Register registers[] = { r0, r1 }; |
| 114 | descriptor->register_param_count_ = 2; |
| 115 | descriptor->register_params_ = registers; |
| 116 | Address entry = |
| 117 | Runtime::FunctionForId(Runtime::kTransitionElementsKind)->entry; |
| 118 | descriptor->deoptimization_handler_ = FUNCTION_ADDR(entry); |
| 119 | } |
| 120 | |
| 121 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 122 | void CompareNilICStub::InitializeInterfaceDescriptor( |
| 123 | Isolate* isolate, |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 124 | CodeStubInterfaceDescriptor* descriptor) { |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 125 | static Register registers[] = { r0 }; |
| 126 | descriptor->register_param_count_ = 1; |
| 127 | descriptor->register_params_ = registers; |
| 128 | descriptor->deoptimization_handler_ = |
| 129 | FUNCTION_ADDR(CompareNilIC_Miss); |
| 130 | descriptor->miss_handler_ = |
| 131 | ExternalReference(IC_Utility(IC::kCompareNilIC_Miss), isolate); |
| 132 | } |
| 133 | |
| 134 | |
| 135 | static void InitializeArrayConstructorDescriptor( |
| 136 | Isolate* isolate, |
| 137 | CodeStubInterfaceDescriptor* descriptor, |
| 138 | int constant_stack_parameter_count) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 139 | // register state |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 140 | // r0 -- number of arguments |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 141 | // r1 -- function |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 142 | // r2 -- type info cell with elements kind |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 143 | static Register registers[] = { r1, r2 }; |
| 144 | descriptor->register_param_count_ = 2; |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 145 | if (constant_stack_parameter_count != 0) { |
| 146 | // stack param count needs (constructor pointer, and single argument) |
| 147 | descriptor->stack_parameter_count_ = &r0; |
| 148 | } |
| 149 | descriptor->hint_stack_parameter_count_ = constant_stack_parameter_count; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 150 | descriptor->register_params_ = registers; |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 151 | descriptor->function_mode_ = JS_FUNCTION_STUB_MODE; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 152 | descriptor->deoptimization_handler_ = |
| 153 | FUNCTION_ADDR(ArrayConstructor_StubFailure); |
| 154 | } |
| 155 | |
| 156 | |
| 157 | void ArrayNoArgumentConstructorStub::InitializeInterfaceDescriptor( |
| 158 | Isolate* isolate, |
| 159 | CodeStubInterfaceDescriptor* descriptor) { |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 160 | InitializeArrayConstructorDescriptor(isolate, descriptor, 0); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 161 | } |
| 162 | |
| 163 | |
| 164 | void ArraySingleArgumentConstructorStub::InitializeInterfaceDescriptor( |
| 165 | Isolate* isolate, |
| 166 | CodeStubInterfaceDescriptor* descriptor) { |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 167 | InitializeArrayConstructorDescriptor(isolate, descriptor, 1); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 168 | } |
| 169 | |
| 170 | |
| 171 | void ArrayNArgumentsConstructorStub::InitializeInterfaceDescriptor( |
| 172 | Isolate* isolate, |
| 173 | CodeStubInterfaceDescriptor* descriptor) { |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 174 | InitializeArrayConstructorDescriptor(isolate, descriptor, -1); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 175 | } |
| 176 | |
| 177 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 178 | #define __ ACCESS_MASM(masm) |
| 179 | |
| 180 | static void EmitIdenticalObjectComparison(MacroAssembler* masm, |
| 181 | Label* slow, |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 182 | Condition cond); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 183 | static void EmitSmiNonsmiComparison(MacroAssembler* masm, |
| 184 | Register lhs, |
| 185 | Register rhs, |
| 186 | Label* lhs_not_nan, |
| 187 | Label* slow, |
| 188 | bool strict); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 189 | static void EmitStrictTwoHeapObjectCompare(MacroAssembler* masm, |
| 190 | Register lhs, |
| 191 | Register rhs); |
| 192 | |
| 193 | |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 194 | // Check if the operand is a heap number. |
| 195 | static void EmitCheckForHeapNumber(MacroAssembler* masm, Register operand, |
| 196 | Register scratch1, Register scratch2, |
| 197 | Label* not_a_heap_number) { |
| 198 | __ ldr(scratch1, FieldMemOperand(operand, HeapObject::kMapOffset)); |
| 199 | __ LoadRoot(scratch2, Heap::kHeapNumberMapRootIndex); |
| 200 | __ cmp(scratch1, scratch2); |
| 201 | __ b(ne, not_a_heap_number); |
| 202 | } |
| 203 | |
| 204 | |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 205 | void HydrogenCodeStub::GenerateLightweightMiss(MacroAssembler* masm) { |
| 206 | // Update the static counter each time a new code stub is generated. |
| 207 | Isolate* isolate = masm->isolate(); |
| 208 | isolate->counters()->code_stubs()->Increment(); |
| 209 | |
| 210 | CodeStubInterfaceDescriptor* descriptor = GetInterfaceDescriptor(isolate); |
| 211 | int param_count = descriptor->register_param_count_; |
| 212 | { |
| 213 | // Call the runtime system in a fresh internal frame. |
| 214 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 215 | ASSERT(descriptor->register_param_count_ == 0 || |
| 216 | r0.is(descriptor->register_params_[param_count - 1])); |
| 217 | // Push arguments |
| 218 | for (int i = 0; i < param_count; ++i) { |
| 219 | __ push(descriptor->register_params_[i]); |
| 220 | } |
| 221 | ExternalReference miss = descriptor->miss_handler_; |
| 222 | __ CallExternalReference(miss, descriptor->register_param_count_); |
| 223 | } |
| 224 | |
| 225 | __ Ret(); |
| 226 | } |
| 227 | |
| 228 | |
whesse@chromium.org | 7a392b3 | 2011-01-31 11:30:36 +0000 | [diff] [blame] | 229 | void ToNumberStub::Generate(MacroAssembler* masm) { |
| 230 | // The ToNumber stub takes one argument in eax. |
| 231 | Label check_heap_number, call_builtin; |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 232 | __ JumpIfNotSmi(r0, &check_heap_number); |
whesse@chromium.org | 7a392b3 | 2011-01-31 11:30:36 +0000 | [diff] [blame] | 233 | __ Ret(); |
| 234 | |
| 235 | __ bind(&check_heap_number); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 236 | EmitCheckForHeapNumber(masm, r0, r1, ip, &call_builtin); |
whesse@chromium.org | 7a392b3 | 2011-01-31 11:30:36 +0000 | [diff] [blame] | 237 | __ Ret(); |
| 238 | |
| 239 | __ bind(&call_builtin); |
| 240 | __ push(r0); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 241 | __ InvokeBuiltin(Builtins::TO_NUMBER, JUMP_FUNCTION); |
whesse@chromium.org | 7a392b3 | 2011-01-31 11:30:36 +0000 | [diff] [blame] | 242 | } |
| 243 | |
| 244 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 245 | void FastNewClosureStub::Generate(MacroAssembler* masm) { |
| 246 | // Create a new closure from the given function info in new |
| 247 | // space. Set the context to the current context in cp. |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 248 | Counters* counters = masm->isolate()->counters(); |
| 249 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 250 | Label gc; |
| 251 | |
| 252 | // Pop the function info from the stack. |
| 253 | __ pop(r3); |
| 254 | |
| 255 | // Attempt to allocate new JSFunction in new space. |
svenpanne@chromium.org | 2bda543 | 2013-03-15 12:39:50 +0000 | [diff] [blame] | 256 | __ Allocate(JSFunction::kSize, r0, r1, r2, &gc, TAG_OBJECT); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 257 | |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 258 | __ IncrementCounter(counters->fast_new_closure_total(), 1, r6, r7); |
| 259 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 260 | int map_index = Context::FunctionMapIndex(language_mode_, is_generator_); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 261 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 262 | // Compute the function map in the current native context and set that |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 263 | // as the map of the allocated object. |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 264 | __ ldr(r2, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
| 265 | __ ldr(r2, FieldMemOperand(r2, GlobalObject::kNativeContextOffset)); |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 266 | __ ldr(r5, MemOperand(r2, Context::SlotOffset(map_index))); |
| 267 | __ str(r5, FieldMemOperand(r0, HeapObject::kMapOffset)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 268 | |
| 269 | // Initialize the rest of the function. We don't have to update the |
| 270 | // write barrier because the allocated object is in new space. |
| 271 | __ LoadRoot(r1, Heap::kEmptyFixedArrayRootIndex); |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 272 | __ LoadRoot(r5, Heap::kTheHoleValueRootIndex); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 273 | __ str(r1, FieldMemOperand(r0, JSObject::kPropertiesOffset)); |
| 274 | __ str(r1, FieldMemOperand(r0, JSObject::kElementsOffset)); |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 275 | __ str(r5, FieldMemOperand(r0, JSFunction::kPrototypeOrInitialMapOffset)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 276 | __ str(r3, FieldMemOperand(r0, JSFunction::kSharedFunctionInfoOffset)); |
| 277 | __ str(cp, FieldMemOperand(r0, JSFunction::kContextOffset)); |
| 278 | __ str(r1, FieldMemOperand(r0, JSFunction::kLiteralsOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 279 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 280 | // Initialize the code pointer in the function to be the one |
| 281 | // found in the shared function info object. |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 282 | // But first check if there is an optimized version for our context. |
| 283 | Label check_optimized; |
| 284 | Label install_unoptimized; |
| 285 | if (FLAG_cache_optimized_code) { |
| 286 | __ ldr(r1, |
| 287 | FieldMemOperand(r3, SharedFunctionInfo::kOptimizedCodeMapOffset)); |
| 288 | __ tst(r1, r1); |
| 289 | __ b(ne, &check_optimized); |
| 290 | } |
| 291 | __ bind(&install_unoptimized); |
| 292 | __ LoadRoot(r4, Heap::kUndefinedValueRootIndex); |
| 293 | __ str(r4, FieldMemOperand(r0, JSFunction::kNextFunctionLinkOffset)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 294 | __ ldr(r3, FieldMemOperand(r3, SharedFunctionInfo::kCodeOffset)); |
| 295 | __ add(r3, r3, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 296 | __ str(r3, FieldMemOperand(r0, JSFunction::kCodeEntryOffset)); |
| 297 | |
| 298 | // Return result. The argument function info has been popped already. |
| 299 | __ Ret(); |
| 300 | |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 301 | __ bind(&check_optimized); |
| 302 | |
| 303 | __ IncrementCounter(counters->fast_new_closure_try_optimized(), 1, r6, r7); |
| 304 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 305 | // r2 holds native context, r1 points to fixed array of 3-element entries |
| 306 | // (native context, optimized code, literals). |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 307 | // The optimized code map must never be empty, so check the first elements. |
| 308 | Label install_optimized; |
| 309 | // Speculatively move code object into r4. |
| 310 | __ ldr(r4, FieldMemOperand(r1, FixedArray::kHeaderSize + kPointerSize)); |
| 311 | __ ldr(r5, FieldMemOperand(r1, FixedArray::kHeaderSize)); |
| 312 | __ cmp(r2, r5); |
| 313 | __ b(eq, &install_optimized); |
| 314 | |
| 315 | // Iterate through the rest of map backwards. r4 holds an index as a Smi. |
| 316 | Label loop; |
| 317 | __ ldr(r4, FieldMemOperand(r1, FixedArray::kLengthOffset)); |
| 318 | __ bind(&loop); |
| 319 | // Do not double check first entry. |
| 320 | |
| 321 | __ cmp(r4, Operand(Smi::FromInt(SharedFunctionInfo::kEntryLength))); |
| 322 | __ b(eq, &install_unoptimized); |
| 323 | __ sub(r4, r4, Operand( |
| 324 | Smi::FromInt(SharedFunctionInfo::kEntryLength))); // Skip an entry. |
| 325 | __ add(r5, r1, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 326 | __ add(r5, r5, Operand(r4, LSL, kPointerSizeLog2 - kSmiTagSize)); |
| 327 | __ ldr(r5, MemOperand(r5)); |
| 328 | __ cmp(r2, r5); |
| 329 | __ b(ne, &loop); |
| 330 | // Hit: fetch the optimized code. |
| 331 | __ add(r5, r1, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 332 | __ add(r5, r5, Operand(r4, LSL, kPointerSizeLog2 - kSmiTagSize)); |
| 333 | __ add(r5, r5, Operand(kPointerSize)); |
| 334 | __ ldr(r4, MemOperand(r5)); |
| 335 | |
| 336 | __ bind(&install_optimized); |
| 337 | __ IncrementCounter(counters->fast_new_closure_install_optimized(), |
| 338 | 1, r6, r7); |
| 339 | |
| 340 | // TODO(fschneider): Idea: store proper code pointers in the map and either |
| 341 | // unmangle them on marking or do nothing as the whole map is discarded on |
| 342 | // major GC anyway. |
| 343 | __ add(r4, r4, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 344 | __ str(r4, FieldMemOperand(r0, JSFunction::kCodeEntryOffset)); |
| 345 | |
| 346 | // Now link a function into a list of optimized functions. |
| 347 | __ ldr(r4, ContextOperand(r2, Context::OPTIMIZED_FUNCTIONS_LIST)); |
| 348 | |
| 349 | __ str(r4, FieldMemOperand(r0, JSFunction::kNextFunctionLinkOffset)); |
| 350 | // No need for write barrier as JSFunction (eax) is in the new space. |
| 351 | |
| 352 | __ str(r0, ContextOperand(r2, Context::OPTIMIZED_FUNCTIONS_LIST)); |
| 353 | // Store JSFunction (eax) into edx before issuing write barrier as |
| 354 | // it clobbers all the registers passed. |
| 355 | __ mov(r4, r0); |
| 356 | __ RecordWriteContextSlot( |
| 357 | r2, |
| 358 | Context::SlotOffset(Context::OPTIMIZED_FUNCTIONS_LIST), |
| 359 | r4, |
| 360 | r1, |
| 361 | kLRHasNotBeenSaved, |
| 362 | kDontSaveFPRegs); |
| 363 | |
| 364 | // Return result. The argument function info has been popped already. |
| 365 | __ Ret(); |
| 366 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 367 | // Create a new closure through the slower runtime call. |
| 368 | __ bind(&gc); |
vegorov@chromium.org | 21b5e95 | 2010-11-23 10:24:40 +0000 | [diff] [blame] | 369 | __ LoadRoot(r4, Heap::kFalseValueRootIndex); |
| 370 | __ Push(cp, r3, r4); |
| 371 | __ TailCallRuntime(Runtime::kNewClosure, 3, 1); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 372 | } |
| 373 | |
| 374 | |
| 375 | void FastNewContextStub::Generate(MacroAssembler* masm) { |
| 376 | // Try to allocate the context in new space. |
| 377 | Label gc; |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 378 | int length = slots_ + Context::MIN_CONTEXT_SLOTS; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 379 | |
| 380 | // Attempt to allocate the context in new space. |
svenpanne@chromium.org | 2bda543 | 2013-03-15 12:39:50 +0000 | [diff] [blame] | 381 | __ Allocate(FixedArray::SizeFor(length), r0, r1, r2, &gc, TAG_OBJECT); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 382 | |
| 383 | // Load the function from the stack. |
| 384 | __ ldr(r3, MemOperand(sp, 0)); |
| 385 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 386 | // Set up the object header. |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 387 | __ LoadRoot(r1, Heap::kFunctionContextMapRootIndex); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 388 | __ mov(r2, Operand(Smi::FromInt(length))); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 389 | __ str(r2, FieldMemOperand(r0, FixedArray::kLengthOffset)); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 390 | __ str(r1, FieldMemOperand(r0, HeapObject::kMapOffset)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 391 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 392 | // Set up the fixed slots, copy the global object from the previous context. |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 393 | __ ldr(r2, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 394 | __ mov(r1, Operand(Smi::FromInt(0))); |
| 395 | __ str(r3, MemOperand(r0, Context::SlotOffset(Context::CLOSURE_INDEX))); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 396 | __ str(cp, MemOperand(r0, Context::SlotOffset(Context::PREVIOUS_INDEX))); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 397 | __ str(r1, MemOperand(r0, Context::SlotOffset(Context::EXTENSION_INDEX))); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 398 | __ str(r2, MemOperand(r0, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 399 | |
| 400 | // Initialize the rest of the slots to undefined. |
| 401 | __ LoadRoot(r1, Heap::kUndefinedValueRootIndex); |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 402 | for (int i = Context::MIN_CONTEXT_SLOTS; i < length; i++) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 403 | __ str(r1, MemOperand(r0, Context::SlotOffset(i))); |
| 404 | } |
| 405 | |
| 406 | // Remove the on-stack argument and return. |
| 407 | __ mov(cp, r0); |
| 408 | __ pop(); |
| 409 | __ Ret(); |
| 410 | |
| 411 | // Need to collect. Call into runtime system. |
| 412 | __ bind(&gc); |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 413 | __ TailCallRuntime(Runtime::kNewFunctionContext, 1, 1); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 414 | } |
| 415 | |
| 416 | |
svenpanne@chromium.org | a8bb4d9 | 2011-10-10 13:20:40 +0000 | [diff] [blame] | 417 | void FastNewBlockContextStub::Generate(MacroAssembler* masm) { |
| 418 | // Stack layout on entry: |
| 419 | // |
| 420 | // [sp]: function. |
| 421 | // [sp + kPointerSize]: serialized scope info |
| 422 | |
| 423 | // Try to allocate the context in new space. |
| 424 | Label gc; |
| 425 | int length = slots_ + Context::MIN_CONTEXT_SLOTS; |
svenpanne@chromium.org | 2bda543 | 2013-03-15 12:39:50 +0000 | [diff] [blame] | 426 | __ Allocate(FixedArray::SizeFor(length), r0, r1, r2, &gc, TAG_OBJECT); |
svenpanne@chromium.org | a8bb4d9 | 2011-10-10 13:20:40 +0000 | [diff] [blame] | 427 | |
| 428 | // Load the function from the stack. |
| 429 | __ ldr(r3, MemOperand(sp, 0)); |
| 430 | |
| 431 | // Load the serialized scope info from the stack. |
| 432 | __ ldr(r1, MemOperand(sp, 1 * kPointerSize)); |
| 433 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 434 | // Set up the object header. |
svenpanne@chromium.org | a8bb4d9 | 2011-10-10 13:20:40 +0000 | [diff] [blame] | 435 | __ LoadRoot(r2, Heap::kBlockContextMapRootIndex); |
| 436 | __ str(r2, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 437 | __ mov(r2, Operand(Smi::FromInt(length))); |
| 438 | __ str(r2, FieldMemOperand(r0, FixedArray::kLengthOffset)); |
| 439 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 440 | // If this block context is nested in the native context we get a smi |
svenpanne@chromium.org | a8bb4d9 | 2011-10-10 13:20:40 +0000 | [diff] [blame] | 441 | // sentinel instead of a function. The block context should get the |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 442 | // canonical empty function of the native context as its closure which |
svenpanne@chromium.org | a8bb4d9 | 2011-10-10 13:20:40 +0000 | [diff] [blame] | 443 | // we still have to look up. |
| 444 | Label after_sentinel; |
| 445 | __ JumpIfNotSmi(r3, &after_sentinel); |
| 446 | if (FLAG_debug_code) { |
| 447 | const char* message = "Expected 0 as a Smi sentinel"; |
| 448 | __ cmp(r3, Operand::Zero()); |
| 449 | __ Assert(eq, message); |
| 450 | } |
| 451 | __ ldr(r3, GlobalObjectOperand()); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 452 | __ ldr(r3, FieldMemOperand(r3, GlobalObject::kNativeContextOffset)); |
svenpanne@chromium.org | a8bb4d9 | 2011-10-10 13:20:40 +0000 | [diff] [blame] | 453 | __ ldr(r3, ContextOperand(r3, Context::CLOSURE_INDEX)); |
| 454 | __ bind(&after_sentinel); |
| 455 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 456 | // Set up the fixed slots, copy the global object from the previous context. |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 457 | __ ldr(r2, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX)); |
svenpanne@chromium.org | a8bb4d9 | 2011-10-10 13:20:40 +0000 | [diff] [blame] | 458 | __ str(r3, ContextOperand(r0, Context::CLOSURE_INDEX)); |
| 459 | __ str(cp, ContextOperand(r0, Context::PREVIOUS_INDEX)); |
| 460 | __ str(r1, ContextOperand(r0, Context::EXTENSION_INDEX)); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 461 | __ str(r2, ContextOperand(r0, Context::GLOBAL_OBJECT_INDEX)); |
svenpanne@chromium.org | a8bb4d9 | 2011-10-10 13:20:40 +0000 | [diff] [blame] | 462 | |
| 463 | // Initialize the rest of the slots to the hole value. |
| 464 | __ LoadRoot(r1, Heap::kTheHoleValueRootIndex); |
| 465 | for (int i = 0; i < slots_; i++) { |
| 466 | __ str(r1, ContextOperand(r0, i + Context::MIN_CONTEXT_SLOTS)); |
| 467 | } |
| 468 | |
| 469 | // Remove the on-stack argument and return. |
| 470 | __ mov(cp, r0); |
| 471 | __ add(sp, sp, Operand(2 * kPointerSize)); |
| 472 | __ Ret(); |
| 473 | |
| 474 | // Need to collect. Call into runtime system. |
| 475 | __ bind(&gc); |
| 476 | __ TailCallRuntime(Runtime::kPushBlockContext, 2, 1); |
| 477 | } |
| 478 | |
| 479 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 480 | // Takes a Smi and converts to an IEEE 64 bit floating point value in two |
| 481 | // registers. The format is 1 sign bit, 11 exponent bits (biased 1023) and |
| 482 | // 52 fraction bits (20 in the first word, 32 in the second). Zeros is a |
| 483 | // scratch register. Destroys the source register. No GC occurs during this |
| 484 | // stub so you don't have to set up the frame. |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 485 | class ConvertToDoubleStub : public PlatformCodeStub { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 486 | public: |
| 487 | ConvertToDoubleStub(Register result_reg_1, |
| 488 | Register result_reg_2, |
| 489 | Register source_reg, |
| 490 | Register scratch_reg) |
| 491 | : result1_(result_reg_1), |
| 492 | result2_(result_reg_2), |
| 493 | source_(source_reg), |
| 494 | zeros_(scratch_reg) { } |
| 495 | |
| 496 | private: |
| 497 | Register result1_; |
| 498 | Register result2_; |
| 499 | Register source_; |
| 500 | Register zeros_; |
| 501 | |
| 502 | // Minor key encoding in 16 bits. |
| 503 | class ModeBits: public BitField<OverwriteMode, 0, 2> {}; |
| 504 | class OpBits: public BitField<Token::Value, 2, 14> {}; |
| 505 | |
| 506 | Major MajorKey() { return ConvertToDouble; } |
| 507 | int MinorKey() { |
| 508 | // Encode the parameters in a unique 16 bit value. |
| 509 | return result1_.code() + |
| 510 | (result2_.code() << 4) + |
| 511 | (source_.code() << 8) + |
| 512 | (zeros_.code() << 12); |
| 513 | } |
| 514 | |
| 515 | void Generate(MacroAssembler* masm); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 516 | }; |
| 517 | |
| 518 | |
| 519 | void ConvertToDoubleStub::Generate(MacroAssembler* masm) { |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 520 | Register exponent = result1_; |
| 521 | Register mantissa = result2_; |
karlklose@chromium.org | 44bc708 | 2011-04-11 12:33:05 +0000 | [diff] [blame] | 522 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 523 | Label not_special; |
| 524 | // Convert from Smi to integer. |
| 525 | __ mov(source_, Operand(source_, ASR, kSmiTagSize)); |
| 526 | // Move sign bit from source to destination. This works because the sign bit |
| 527 | // in the exponent word of the double has the same position and polarity as |
| 528 | // the 2's complement sign bit in a Smi. |
| 529 | STATIC_ASSERT(HeapNumber::kSignMask == 0x80000000u); |
| 530 | __ and_(exponent, source_, Operand(HeapNumber::kSignMask), SetCC); |
| 531 | // Subtract from 0 if source was negative. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 532 | __ rsb(source_, source_, Operand::Zero(), LeaveCC, ne); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 533 | |
| 534 | // We have -1, 0 or 1, which we treat specially. Register source_ contains |
| 535 | // absolute value: it is either equal to 1 (special case of -1 and 1), |
| 536 | // greater than 1 (not a special case) or less than 1 (special case of 0). |
| 537 | __ cmp(source_, Operand(1)); |
| 538 | __ b(gt, ¬_special); |
| 539 | |
| 540 | // For 1 or -1 we need to or in the 0 exponent (biased to 1023). |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 541 | const uint32_t exponent_word_for_1 = |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 542 | HeapNumber::kExponentBias << HeapNumber::kExponentShift; |
| 543 | __ orr(exponent, exponent, Operand(exponent_word_for_1), LeaveCC, eq); |
| 544 | // 1, 0 and -1 all have 0 for the second word. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 545 | __ mov(mantissa, Operand::Zero()); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 546 | __ Ret(); |
| 547 | |
| 548 | __ bind(¬_special); |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 549 | __ clz(zeros_, source_); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 550 | // Compute exponent and or it into the exponent register. |
| 551 | // We use mantissa as a scratch register here. Use a fudge factor to |
| 552 | // divide the constant 31 + HeapNumber::kExponentBias, 0x41d, into two parts |
| 553 | // that fit in the ARM's constant field. |
| 554 | int fudge = 0x400; |
| 555 | __ rsb(mantissa, zeros_, Operand(31 + HeapNumber::kExponentBias - fudge)); |
| 556 | __ add(mantissa, mantissa, Operand(fudge)); |
| 557 | __ orr(exponent, |
| 558 | exponent, |
| 559 | Operand(mantissa, LSL, HeapNumber::kExponentShift)); |
| 560 | // Shift up the source chopping the top bit off. |
| 561 | __ add(zeros_, zeros_, Operand(1)); |
| 562 | // This wouldn't work for 1.0 or -1.0 as the shift would be 32 which means 0. |
| 563 | __ mov(source_, Operand(source_, LSL, zeros_)); |
| 564 | // Compute lower part of fraction (last 12 bits). |
| 565 | __ mov(mantissa, Operand(source_, LSL, HeapNumber::kMantissaBitsInTopWord)); |
| 566 | // And the top (top 20 bits). |
| 567 | __ orr(exponent, |
| 568 | exponent, |
| 569 | Operand(source_, LSR, 32 - HeapNumber::kMantissaBitsInTopWord)); |
| 570 | __ Ret(); |
| 571 | } |
| 572 | |
| 573 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 574 | bool WriteInt32ToHeapNumberStub::IsPregenerated() { |
| 575 | // These variants are compiled ahead of time. See next method. |
| 576 | if (the_int_.is(r1) && the_heap_number_.is(r0) && scratch_.is(r2)) { |
| 577 | return true; |
| 578 | } |
| 579 | if (the_int_.is(r2) && the_heap_number_.is(r0) && scratch_.is(r3)) { |
| 580 | return true; |
| 581 | } |
| 582 | // Other register combinations are generated as and when they are needed, |
| 583 | // so it is unsafe to call them from stubs (we can't generate a stub while |
| 584 | // we are generating a stub). |
| 585 | return false; |
| 586 | } |
| 587 | |
| 588 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 589 | void WriteInt32ToHeapNumberStub::GenerateFixedRegStubsAheadOfTime( |
| 590 | Isolate* isolate) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 591 | WriteInt32ToHeapNumberStub stub1(r1, r0, r2); |
| 592 | WriteInt32ToHeapNumberStub stub2(r2, r0, r3); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 593 | stub1.GetCode(isolate)->set_is_pregenerated(true); |
| 594 | stub2.GetCode(isolate)->set_is_pregenerated(true); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 595 | } |
| 596 | |
| 597 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 598 | // See comment for class. |
| 599 | void WriteInt32ToHeapNumberStub::Generate(MacroAssembler* masm) { |
| 600 | Label max_negative_int; |
| 601 | // the_int_ has the answer which is a signed int32 but not a Smi. |
| 602 | // We test for the special value that has a different exponent. This test |
| 603 | // has the neat side effect of setting the flags according to the sign. |
| 604 | STATIC_ASSERT(HeapNumber::kSignMask == 0x80000000u); |
| 605 | __ cmp(the_int_, Operand(0x80000000u)); |
| 606 | __ b(eq, &max_negative_int); |
| 607 | // Set up the correct exponent in scratch_. All non-Smi int32s have the same. |
| 608 | // A non-Smi integer is 1.xxx * 2^30 so the exponent is 30 (biased). |
| 609 | uint32_t non_smi_exponent = |
| 610 | (HeapNumber::kExponentBias + 30) << HeapNumber::kExponentShift; |
| 611 | __ mov(scratch_, Operand(non_smi_exponent)); |
| 612 | // Set the sign bit in scratch_ if the value was negative. |
| 613 | __ orr(scratch_, scratch_, Operand(HeapNumber::kSignMask), LeaveCC, cs); |
| 614 | // Subtract from 0 if the value was negative. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 615 | __ rsb(the_int_, the_int_, Operand::Zero(), LeaveCC, cs); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 616 | // We should be masking the implict first digit of the mantissa away here, |
| 617 | // but it just ends up combining harmlessly with the last digit of the |
| 618 | // exponent that happens to be 1. The sign bit is 0 so we shift 10 to get |
| 619 | // the most significant 1 to hit the last bit of the 12 bit sign and exponent. |
| 620 | ASSERT(((1 << HeapNumber::kExponentShift) & non_smi_exponent) != 0); |
| 621 | const int shift_distance = HeapNumber::kNonMantissaBitsInTopWord - 2; |
| 622 | __ orr(scratch_, scratch_, Operand(the_int_, LSR, shift_distance)); |
| 623 | __ str(scratch_, FieldMemOperand(the_heap_number_, |
| 624 | HeapNumber::kExponentOffset)); |
| 625 | __ mov(scratch_, Operand(the_int_, LSL, 32 - shift_distance)); |
| 626 | __ str(scratch_, FieldMemOperand(the_heap_number_, |
| 627 | HeapNumber::kMantissaOffset)); |
| 628 | __ Ret(); |
| 629 | |
| 630 | __ bind(&max_negative_int); |
| 631 | // The max negative int32 is stored as a positive number in the mantissa of |
| 632 | // a double because it uses a sign bit instead of using two's complement. |
| 633 | // The actual mantissa bits stored are all 0 because the implicit most |
| 634 | // significant 1 bit is not stored. |
| 635 | non_smi_exponent += 1 << HeapNumber::kExponentShift; |
| 636 | __ mov(ip, Operand(HeapNumber::kSignMask | non_smi_exponent)); |
| 637 | __ str(ip, FieldMemOperand(the_heap_number_, HeapNumber::kExponentOffset)); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 638 | __ mov(ip, Operand::Zero()); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 639 | __ str(ip, FieldMemOperand(the_heap_number_, HeapNumber::kMantissaOffset)); |
| 640 | __ Ret(); |
| 641 | } |
| 642 | |
| 643 | |
| 644 | // Handle the case where the lhs and rhs are the same object. |
| 645 | // Equality is almost reflexive (everything but NaN), so this is a test |
| 646 | // for "identity and not NaN". |
| 647 | static void EmitIdenticalObjectComparison(MacroAssembler* masm, |
| 648 | Label* slow, |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 649 | Condition cond) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 650 | Label not_identical; |
| 651 | Label heap_number, return_equal; |
| 652 | __ cmp(r0, r1); |
| 653 | __ b(ne, ¬_identical); |
| 654 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 655 | // Test for NaN. Sadly, we can't just compare to FACTORY->nan_value(), |
| 656 | // so we do the second best thing - test it ourselves. |
| 657 | // They are both equal and they are not both Smis so both of them are not |
| 658 | // Smis. If it's not a heap number, then return equal. |
| 659 | if (cond == lt || cond == gt) { |
| 660 | __ CompareObjectType(r0, r4, r4, FIRST_SPEC_OBJECT_TYPE); |
| 661 | __ b(ge, slow); |
| 662 | } else { |
| 663 | __ CompareObjectType(r0, r4, r4, HEAP_NUMBER_TYPE); |
| 664 | __ b(eq, &heap_number); |
| 665 | // Comparing JS objects with <=, >= is complicated. |
| 666 | if (cond != eq) { |
| 667 | __ cmp(r4, Operand(FIRST_SPEC_OBJECT_TYPE)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 668 | __ b(ge, slow); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 669 | // Normally here we fall through to return_equal, but undefined is |
| 670 | // special: (undefined == undefined) == true, but |
| 671 | // (undefined <= undefined) == false! See ECMAScript 11.8.5. |
| 672 | if (cond == le || cond == ge) { |
| 673 | __ cmp(r4, Operand(ODDBALL_TYPE)); |
| 674 | __ b(ne, &return_equal); |
| 675 | __ LoadRoot(r2, Heap::kUndefinedValueRootIndex); |
| 676 | __ cmp(r0, r2); |
| 677 | __ b(ne, &return_equal); |
| 678 | if (cond == le) { |
| 679 | // undefined <= undefined should fail. |
| 680 | __ mov(r0, Operand(GREATER)); |
| 681 | } else { |
| 682 | // undefined >= undefined should fail. |
| 683 | __ mov(r0, Operand(LESS)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 684 | } |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 685 | __ Ret(); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 686 | } |
| 687 | } |
| 688 | } |
| 689 | |
| 690 | __ bind(&return_equal); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 691 | if (cond == lt) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 692 | __ mov(r0, Operand(GREATER)); // Things aren't less than themselves. |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 693 | } else if (cond == gt) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 694 | __ mov(r0, Operand(LESS)); // Things aren't greater than themselves. |
| 695 | } else { |
| 696 | __ mov(r0, Operand(EQUAL)); // Things are <=, >=, ==, === themselves. |
| 697 | } |
| 698 | __ Ret(); |
| 699 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 700 | // For less and greater we don't have to check for NaN since the result of |
| 701 | // x < x is false regardless. For the others here is some code to check |
| 702 | // for NaN. |
| 703 | if (cond != lt && cond != gt) { |
| 704 | __ bind(&heap_number); |
| 705 | // It is a heap number, so return non-equal if it's NaN and equal if it's |
| 706 | // not NaN. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 707 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 708 | // The representation of NaN values has all exponent bits (52..62) set, |
| 709 | // and not all mantissa bits (0..51) clear. |
| 710 | // Read top bits of double representation (second word of value). |
| 711 | __ ldr(r2, FieldMemOperand(r0, HeapNumber::kExponentOffset)); |
| 712 | // Test that exponent bits are all set. |
| 713 | __ Sbfx(r3, r2, HeapNumber::kExponentShift, HeapNumber::kExponentBits); |
| 714 | // NaNs have all-one exponents so they sign extend to -1. |
| 715 | __ cmp(r3, Operand(-1)); |
| 716 | __ b(ne, &return_equal); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 717 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 718 | // Shift out flag and all exponent bits, retaining only mantissa. |
| 719 | __ mov(r2, Operand(r2, LSL, HeapNumber::kNonMantissaBitsInTopWord)); |
| 720 | // Or with all low-bits of mantissa. |
| 721 | __ ldr(r3, FieldMemOperand(r0, HeapNumber::kMantissaOffset)); |
| 722 | __ orr(r0, r3, Operand(r2), SetCC); |
| 723 | // For equal we already have the right value in r0: Return zero (equal) |
| 724 | // if all bits in mantissa are zero (it's an Infinity) and non-zero if |
| 725 | // not (it's a NaN). For <= and >= we need to load r0 with the failing |
| 726 | // value if it's a NaN. |
| 727 | if (cond != eq) { |
| 728 | // All-zero means Infinity means equal. |
| 729 | __ Ret(eq); |
| 730 | if (cond == le) { |
| 731 | __ mov(r0, Operand(GREATER)); // NaN <= NaN should fail. |
| 732 | } else { |
| 733 | __ mov(r0, Operand(LESS)); // NaN >= NaN should fail. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 734 | } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 735 | } |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 736 | __ Ret(); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 737 | } |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 738 | // No fall through here. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 739 | |
| 740 | __ bind(¬_identical); |
| 741 | } |
| 742 | |
| 743 | |
| 744 | // See comment at call site. |
| 745 | static void EmitSmiNonsmiComparison(MacroAssembler* masm, |
| 746 | Register lhs, |
| 747 | Register rhs, |
| 748 | Label* lhs_not_nan, |
| 749 | Label* slow, |
| 750 | bool strict) { |
| 751 | ASSERT((lhs.is(r0) && rhs.is(r1)) || |
| 752 | (lhs.is(r1) && rhs.is(r0))); |
| 753 | |
| 754 | Label rhs_is_smi; |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 755 | __ JumpIfSmi(rhs, &rhs_is_smi); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 756 | |
| 757 | // Lhs is a Smi. Check whether the rhs is a heap number. |
| 758 | __ CompareObjectType(rhs, r4, r4, HEAP_NUMBER_TYPE); |
| 759 | if (strict) { |
| 760 | // If rhs is not a number and lhs is a Smi then strict equality cannot |
| 761 | // succeed. Return non-equal |
| 762 | // If rhs is r0 then there is already a non zero value in it. |
| 763 | if (!rhs.is(r0)) { |
| 764 | __ mov(r0, Operand(NOT_EQUAL), LeaveCC, ne); |
| 765 | } |
| 766 | __ Ret(ne); |
| 767 | } else { |
| 768 | // Smi compared non-strictly with a non-Smi non-heap-number. Call |
| 769 | // the runtime. |
| 770 | __ b(ne, slow); |
| 771 | } |
| 772 | |
| 773 | // Lhs is a smi, rhs is a number. |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 774 | // Convert lhs to a double in d7. |
| 775 | __ SmiToDoubleVFPRegister(lhs, d7, r7, s15); |
| 776 | // Load the double from rhs, tagged HeapNumber r0, to d6. |
| 777 | __ sub(r7, rhs, Operand(kHeapObjectTag)); |
| 778 | __ vldr(d6, r7, HeapNumber::kValueOffset); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 779 | |
| 780 | // We now have both loaded as doubles but we can skip the lhs nan check |
| 781 | // since it's a smi. |
| 782 | __ jmp(lhs_not_nan); |
| 783 | |
| 784 | __ bind(&rhs_is_smi); |
| 785 | // Rhs is a smi. Check whether the non-smi lhs is a heap number. |
| 786 | __ CompareObjectType(lhs, r4, r4, HEAP_NUMBER_TYPE); |
| 787 | if (strict) { |
| 788 | // If lhs is not a number and rhs is a smi then strict equality cannot |
| 789 | // succeed. Return non-equal. |
| 790 | // If lhs is r0 then there is already a non zero value in it. |
| 791 | if (!lhs.is(r0)) { |
| 792 | __ mov(r0, Operand(NOT_EQUAL), LeaveCC, ne); |
| 793 | } |
| 794 | __ Ret(ne); |
| 795 | } else { |
| 796 | // Smi compared non-strictly with a non-smi non-heap-number. Call |
| 797 | // the runtime. |
| 798 | __ b(ne, slow); |
| 799 | } |
| 800 | |
| 801 | // Rhs is a smi, lhs is a heap number. |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 802 | // Load the double from lhs, tagged HeapNumber r1, to d7. |
| 803 | __ sub(r7, lhs, Operand(kHeapObjectTag)); |
| 804 | __ vldr(d7, r7, HeapNumber::kValueOffset); |
| 805 | // Convert rhs to a double in d6 . |
| 806 | __ SmiToDoubleVFPRegister(rhs, d6, r7, s13); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 807 | // Fall through to both_loaded_as_doubles. |
| 808 | } |
| 809 | |
| 810 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 811 | // See comment at call site. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 812 | static void EmitStrictTwoHeapObjectCompare(MacroAssembler* masm, |
| 813 | Register lhs, |
| 814 | Register rhs) { |
| 815 | ASSERT((lhs.is(r0) && rhs.is(r1)) || |
| 816 | (lhs.is(r1) && rhs.is(r0))); |
| 817 | |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 818 | // If either operand is a JS object or an oddball value, then they are |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 819 | // not equal since their pointers are different. |
| 820 | // There is no test for undetectability in strict equality. |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 821 | STATIC_ASSERT(LAST_TYPE == LAST_SPEC_OBJECT_TYPE); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 822 | Label first_non_object; |
| 823 | // Get the type of the first operand into r2 and compare it with |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 824 | // FIRST_SPEC_OBJECT_TYPE. |
| 825 | __ CompareObjectType(rhs, r2, r2, FIRST_SPEC_OBJECT_TYPE); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 826 | __ b(lt, &first_non_object); |
| 827 | |
| 828 | // Return non-zero (r0 is not zero) |
| 829 | Label return_not_equal; |
| 830 | __ bind(&return_not_equal); |
| 831 | __ Ret(); |
| 832 | |
| 833 | __ bind(&first_non_object); |
| 834 | // Check for oddballs: true, false, null, undefined. |
| 835 | __ cmp(r2, Operand(ODDBALL_TYPE)); |
| 836 | __ b(eq, &return_not_equal); |
| 837 | |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 838 | __ CompareObjectType(lhs, r3, r3, FIRST_SPEC_OBJECT_TYPE); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 839 | __ b(ge, &return_not_equal); |
| 840 | |
| 841 | // Check for oddballs: true, false, null, undefined. |
| 842 | __ cmp(r3, Operand(ODDBALL_TYPE)); |
| 843 | __ b(eq, &return_not_equal); |
| 844 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 845 | // Now that we have the types we might as well check for |
| 846 | // internalized-internalized. |
| 847 | // Ensure that no non-strings have the internalized bit set. |
| 848 | STATIC_ASSERT(LAST_TYPE < kNotStringTag + kIsInternalizedMask); |
| 849 | STATIC_ASSERT(kInternalizedTag != 0); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 850 | __ and_(r2, r2, Operand(r3)); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 851 | __ tst(r2, Operand(kIsInternalizedMask)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 852 | __ b(ne, &return_not_equal); |
| 853 | } |
| 854 | |
| 855 | |
| 856 | // See comment at call site. |
| 857 | static void EmitCheckForTwoHeapNumbers(MacroAssembler* masm, |
| 858 | Register lhs, |
| 859 | Register rhs, |
| 860 | Label* both_loaded_as_doubles, |
| 861 | Label* not_heap_numbers, |
| 862 | Label* slow) { |
| 863 | ASSERT((lhs.is(r0) && rhs.is(r1)) || |
| 864 | (lhs.is(r1) && rhs.is(r0))); |
| 865 | |
| 866 | __ CompareObjectType(rhs, r3, r2, HEAP_NUMBER_TYPE); |
| 867 | __ b(ne, not_heap_numbers); |
| 868 | __ ldr(r2, FieldMemOperand(lhs, HeapObject::kMapOffset)); |
| 869 | __ cmp(r2, r3); |
| 870 | __ b(ne, slow); // First was a heap number, second wasn't. Go slow case. |
| 871 | |
| 872 | // Both are heap numbers. Load them up then jump to the code we have |
| 873 | // for that. |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 874 | __ sub(r7, rhs, Operand(kHeapObjectTag)); |
| 875 | __ vldr(d6, r7, HeapNumber::kValueOffset); |
| 876 | __ sub(r7, lhs, Operand(kHeapObjectTag)); |
| 877 | __ vldr(d7, r7, HeapNumber::kValueOffset); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 878 | __ jmp(both_loaded_as_doubles); |
| 879 | } |
| 880 | |
| 881 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 882 | // Fast negative check for internalized-to-internalized equality. |
| 883 | static void EmitCheckForInternalizedStringsOrObjects(MacroAssembler* masm, |
| 884 | Register lhs, |
| 885 | Register rhs, |
| 886 | Label* possible_strings, |
| 887 | Label* not_both_strings) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 888 | ASSERT((lhs.is(r0) && rhs.is(r1)) || |
| 889 | (lhs.is(r1) && rhs.is(r0))); |
| 890 | |
| 891 | // r2 is object type of rhs. |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 892 | // Ensure that no non-strings have the internalized bit set. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 893 | Label object_test; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 894 | STATIC_ASSERT(kInternalizedTag != 0); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 895 | __ tst(r2, Operand(kIsNotStringMask)); |
| 896 | __ b(ne, &object_test); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 897 | __ tst(r2, Operand(kIsInternalizedMask)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 898 | __ b(eq, possible_strings); |
| 899 | __ CompareObjectType(lhs, r3, r3, FIRST_NONSTRING_TYPE); |
| 900 | __ b(ge, not_both_strings); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 901 | __ tst(r3, Operand(kIsInternalizedMask)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 902 | __ b(eq, possible_strings); |
| 903 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 904 | // Both are internalized. We already checked they weren't the same pointer |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 905 | // so they are not equal. |
| 906 | __ mov(r0, Operand(NOT_EQUAL)); |
| 907 | __ Ret(); |
| 908 | |
| 909 | __ bind(&object_test); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 910 | __ cmp(r2, Operand(FIRST_SPEC_OBJECT_TYPE)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 911 | __ b(lt, not_both_strings); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 912 | __ CompareObjectType(lhs, r2, r3, FIRST_SPEC_OBJECT_TYPE); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 913 | __ b(lt, not_both_strings); |
| 914 | // If both objects are undetectable, they are equal. Otherwise, they |
| 915 | // are not equal, since they are different objects and an object is not |
| 916 | // equal to undefined. |
| 917 | __ ldr(r3, FieldMemOperand(rhs, HeapObject::kMapOffset)); |
| 918 | __ ldrb(r2, FieldMemOperand(r2, Map::kBitFieldOffset)); |
| 919 | __ ldrb(r3, FieldMemOperand(r3, Map::kBitFieldOffset)); |
| 920 | __ and_(r0, r2, Operand(r3)); |
| 921 | __ and_(r0, r0, Operand(1 << Map::kIsUndetectable)); |
| 922 | __ eor(r0, r0, Operand(1 << Map::kIsUndetectable)); |
| 923 | __ Ret(); |
| 924 | } |
| 925 | |
| 926 | |
| 927 | void NumberToStringStub::GenerateLookupNumberStringCache(MacroAssembler* masm, |
| 928 | Register object, |
| 929 | Register result, |
| 930 | Register scratch1, |
| 931 | Register scratch2, |
| 932 | Register scratch3, |
| 933 | bool object_is_smi, |
| 934 | Label* not_found) { |
| 935 | // Use of registers. Register result is used as a temporary. |
| 936 | Register number_string_cache = result; |
| 937 | Register mask = scratch3; |
| 938 | |
| 939 | // Load the number string cache. |
| 940 | __ LoadRoot(number_string_cache, Heap::kNumberStringCacheRootIndex); |
| 941 | |
| 942 | // Make the hash mask from the length of the number string cache. It |
| 943 | // contains two elements (number and string) for each cache entry. |
| 944 | __ ldr(mask, FieldMemOperand(number_string_cache, FixedArray::kLengthOffset)); |
| 945 | // Divide length by two (length is a smi). |
| 946 | __ mov(mask, Operand(mask, ASR, kSmiTagSize + 1)); |
| 947 | __ sub(mask, mask, Operand(1)); // Make mask. |
| 948 | |
| 949 | // Calculate the entry in the number string cache. The hash value in the |
| 950 | // number string cache for smis is just the smi value, and the hash for |
| 951 | // doubles is the xor of the upper and lower words. See |
| 952 | // Heap::GetNumberStringCache. |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 953 | Isolate* isolate = masm->isolate(); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 954 | Label is_smi; |
| 955 | Label load_result_from_cache; |
| 956 | if (!object_is_smi) { |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 957 | __ JumpIfSmi(object, &is_smi); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 958 | __ CheckMap(object, |
| 959 | scratch1, |
| 960 | Heap::kHeapNumberMapRootIndex, |
| 961 | not_found, |
| 962 | DONT_DO_SMI_CHECK); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 963 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 964 | STATIC_ASSERT(8 == kDoubleSize); |
| 965 | __ add(scratch1, |
| 966 | object, |
| 967 | Operand(HeapNumber::kValueOffset - kHeapObjectTag)); |
| 968 | __ ldm(ia, scratch1, scratch1.bit() | scratch2.bit()); |
| 969 | __ eor(scratch1, scratch1, Operand(scratch2)); |
| 970 | __ and_(scratch1, scratch1, Operand(mask)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 971 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 972 | // Calculate address of entry in string cache: each entry consists |
| 973 | // of two pointer sized fields. |
| 974 | __ add(scratch1, |
| 975 | number_string_cache, |
| 976 | Operand(scratch1, LSL, kPointerSizeLog2 + 1)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 977 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 978 | Register probe = mask; |
| 979 | __ ldr(probe, |
| 980 | FieldMemOperand(scratch1, FixedArray::kHeaderSize)); |
| 981 | __ JumpIfSmi(probe, not_found); |
| 982 | __ sub(scratch2, object, Operand(kHeapObjectTag)); |
| 983 | __ vldr(d0, scratch2, HeapNumber::kValueOffset); |
| 984 | __ sub(probe, probe, Operand(kHeapObjectTag)); |
| 985 | __ vldr(d1, probe, HeapNumber::kValueOffset); |
| 986 | __ VFPCompareAndSetFlags(d0, d1); |
| 987 | __ b(ne, not_found); // The cache did not contain this value. |
| 988 | __ b(&load_result_from_cache); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 989 | } |
| 990 | |
| 991 | __ bind(&is_smi); |
| 992 | Register scratch = scratch1; |
| 993 | __ and_(scratch, mask, Operand(object, ASR, 1)); |
| 994 | // Calculate address of entry in string cache: each entry consists |
| 995 | // of two pointer sized fields. |
| 996 | __ add(scratch, |
| 997 | number_string_cache, |
| 998 | Operand(scratch, LSL, kPointerSizeLog2 + 1)); |
| 999 | |
| 1000 | // Check if the entry is the smi we are looking for. |
| 1001 | Register probe = mask; |
| 1002 | __ ldr(probe, FieldMemOperand(scratch, FixedArray::kHeaderSize)); |
| 1003 | __ cmp(object, probe); |
| 1004 | __ b(ne, not_found); |
| 1005 | |
| 1006 | // Get the result from the cache. |
| 1007 | __ bind(&load_result_from_cache); |
| 1008 | __ ldr(result, |
| 1009 | FieldMemOperand(scratch, FixedArray::kHeaderSize + kPointerSize)); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 1010 | __ IncrementCounter(isolate->counters()->number_to_string_native(), |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1011 | 1, |
| 1012 | scratch1, |
| 1013 | scratch2); |
| 1014 | } |
| 1015 | |
| 1016 | |
| 1017 | void NumberToStringStub::Generate(MacroAssembler* masm) { |
| 1018 | Label runtime; |
| 1019 | |
| 1020 | __ ldr(r1, MemOperand(sp, 0)); |
| 1021 | |
| 1022 | // Generate code to lookup number in the number string cache. |
| 1023 | GenerateLookupNumberStringCache(masm, r1, r0, r2, r3, r4, false, &runtime); |
| 1024 | __ add(sp, sp, Operand(1 * kPointerSize)); |
| 1025 | __ Ret(); |
| 1026 | |
| 1027 | __ bind(&runtime); |
| 1028 | // Handle number to string in the runtime system if not found in the cache. |
| 1029 | __ TailCallRuntime(Runtime::kNumberToStringSkipCache, 1, 1); |
| 1030 | } |
| 1031 | |
| 1032 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1033 | static void ICCompareStub_CheckInputType(MacroAssembler* masm, |
| 1034 | Register input, |
| 1035 | Register scratch, |
| 1036 | CompareIC::State expected, |
| 1037 | Label* fail) { |
| 1038 | Label ok; |
| 1039 | if (expected == CompareIC::SMI) { |
| 1040 | __ JumpIfNotSmi(input, fail); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1041 | } else if (expected == CompareIC::NUMBER) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1042 | __ JumpIfSmi(input, &ok); |
| 1043 | __ CheckMap(input, scratch, Heap::kHeapNumberMapRootIndex, fail, |
| 1044 | DONT_DO_SMI_CHECK); |
| 1045 | } |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1046 | // We could be strict about internalized/non-internalized here, but as long as |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1047 | // hydrogen doesn't care, the stub doesn't have to care either. |
| 1048 | __ bind(&ok); |
| 1049 | } |
| 1050 | |
| 1051 | |
| 1052 | // On entry r1 and r2 are the values to be compared. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1053 | // On exit r0 is 0, positive or negative to indicate the result of |
| 1054 | // the comparison. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1055 | void ICCompareStub::GenerateGeneric(MacroAssembler* masm) { |
| 1056 | Register lhs = r1; |
| 1057 | Register rhs = r0; |
| 1058 | Condition cc = GetCondition(); |
| 1059 | |
| 1060 | Label miss; |
| 1061 | ICCompareStub_CheckInputType(masm, lhs, r2, left_, &miss); |
| 1062 | ICCompareStub_CheckInputType(masm, rhs, r3, right_, &miss); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1063 | |
| 1064 | Label slow; // Call builtin. |
| 1065 | Label not_smis, both_loaded_as_doubles, lhs_not_nan; |
| 1066 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1067 | Label not_two_smis, smi_done; |
| 1068 | __ orr(r2, r1, r0); |
| 1069 | __ JumpIfNotSmi(r2, ¬_two_smis); |
| 1070 | __ mov(r1, Operand(r1, ASR, 1)); |
| 1071 | __ sub(r0, r1, Operand(r0, ASR, 1)); |
| 1072 | __ Ret(); |
| 1073 | __ bind(¬_two_smis); |
erik.corry@gmail.com | d88afa2 | 2010-09-15 12:33:05 +0000 | [diff] [blame] | 1074 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1075 | // NOTICE! This code is only reached after a smi-fast-case check, so |
| 1076 | // it is certain that at least one operand isn't a smi. |
| 1077 | |
| 1078 | // Handle the case where the objects are identical. Either returns the answer |
| 1079 | // or goes to slow. Only falls through if the objects were not identical. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1080 | EmitIdenticalObjectComparison(masm, &slow, cc); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1081 | |
| 1082 | // If either is a Smi (we know that not both are), then they can only |
| 1083 | // be strictly equal if the other is a HeapNumber. |
| 1084 | STATIC_ASSERT(kSmiTag == 0); |
| 1085 | ASSERT_EQ(0, Smi::FromInt(0)); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1086 | __ and_(r2, lhs, Operand(rhs)); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 1087 | __ JumpIfNotSmi(r2, ¬_smis); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1088 | // One operand is a smi. EmitSmiNonsmiComparison generates code that can: |
| 1089 | // 1) Return the answer. |
| 1090 | // 2) Go to slow. |
| 1091 | // 3) Fall through to both_loaded_as_doubles. |
| 1092 | // 4) Jump to lhs_not_nan. |
| 1093 | // In cases 3 and 4 we have found out we were dealing with a number-number |
| 1094 | // comparison. If VFP3 is supported the double values of the numbers have |
| 1095 | // been loaded into d7 and d6. Otherwise, the double values have been loaded |
| 1096 | // into r0, r1, r2, and r3. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1097 | EmitSmiNonsmiComparison(masm, lhs, rhs, &lhs_not_nan, &slow, strict()); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1098 | |
| 1099 | __ bind(&both_loaded_as_doubles); |
| 1100 | // The arguments have been converted to doubles and stored in d6 and d7, if |
| 1101 | // VFP3 is supported, or in r0, r1, r2, and r3. |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 1102 | Isolate* isolate = masm->isolate(); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1103 | __ bind(&lhs_not_nan); |
| 1104 | Label no_nan; |
| 1105 | // ARMv7 VFP3 instructions to implement double precision comparison. |
| 1106 | __ VFPCompareAndSetFlags(d7, d6); |
| 1107 | Label nan; |
| 1108 | __ b(vs, &nan); |
| 1109 | __ mov(r0, Operand(EQUAL), LeaveCC, eq); |
| 1110 | __ mov(r0, Operand(LESS), LeaveCC, lt); |
| 1111 | __ mov(r0, Operand(GREATER), LeaveCC, gt); |
| 1112 | __ Ret(); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1113 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1114 | __ bind(&nan); |
| 1115 | // If one of the sides was a NaN then the v flag is set. Load r0 with |
| 1116 | // whatever it takes to make the comparison fail, since comparisons with NaN |
| 1117 | // always fail. |
| 1118 | if (cc == lt || cc == le) { |
| 1119 | __ mov(r0, Operand(GREATER)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1120 | } else { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1121 | __ mov(r0, Operand(LESS)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1122 | } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1123 | __ Ret(); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1124 | |
| 1125 | __ bind(¬_smis); |
| 1126 | // At this point we know we are dealing with two different objects, |
| 1127 | // and neither of them is a Smi. The objects are in rhs_ and lhs_. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1128 | if (strict()) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1129 | // This returns non-equal for some object types, or falls through if it |
| 1130 | // was not lucky. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1131 | EmitStrictTwoHeapObjectCompare(masm, lhs, rhs); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1132 | } |
| 1133 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1134 | Label check_for_internalized_strings; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1135 | Label flat_string_check; |
| 1136 | // Check for heap-number-heap-number comparison. Can jump to slow case, |
| 1137 | // or load both doubles into r0, r1, r2, r3 and jump to the code that handles |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1138 | // that case. If the inputs are not doubles then jumps to |
| 1139 | // check_for_internalized_strings. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1140 | // In this case r2 will contain the type of rhs_. Never falls through. |
| 1141 | EmitCheckForTwoHeapNumbers(masm, |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1142 | lhs, |
| 1143 | rhs, |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1144 | &both_loaded_as_doubles, |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1145 | &check_for_internalized_strings, |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1146 | &flat_string_check); |
| 1147 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1148 | __ bind(&check_for_internalized_strings); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1149 | // In the strict case the EmitStrictTwoHeapObjectCompare already took care of |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1150 | // internalized strings. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1151 | if (cc == eq && !strict()) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1152 | // Returns an answer for two internalized strings or two detectable objects. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1153 | // Otherwise jumps to string case or not both strings case. |
| 1154 | // Assumes that r2 is the type of rhs_ on entry. |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 1155 | EmitCheckForInternalizedStringsOrObjects( |
| 1156 | masm, lhs, rhs, &flat_string_check, &slow); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1157 | } |
| 1158 | |
| 1159 | // Check for both being sequential ASCII strings, and inline if that is the |
| 1160 | // case. |
| 1161 | __ bind(&flat_string_check); |
| 1162 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1163 | __ JumpIfNonSmisNotBothSequentialAsciiStrings(lhs, rhs, r2, r3, &slow); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1164 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 1165 | __ IncrementCounter(isolate->counters()->string_compare_native(), 1, r2, r3); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1166 | if (cc == eq) { |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 1167 | StringCompareStub::GenerateFlatAsciiStringEquals(masm, |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1168 | lhs, |
| 1169 | rhs, |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1170 | r2, |
| 1171 | r3, |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 1172 | r4); |
| 1173 | } else { |
| 1174 | StringCompareStub::GenerateCompareFlatAsciiStrings(masm, |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1175 | lhs, |
| 1176 | rhs, |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 1177 | r2, |
| 1178 | r3, |
| 1179 | r4, |
| 1180 | r5); |
| 1181 | } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1182 | // Never falls through to here. |
| 1183 | |
| 1184 | __ bind(&slow); |
| 1185 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1186 | __ Push(lhs, rhs); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1187 | // Figure out which native to call and setup the arguments. |
| 1188 | Builtins::JavaScript native; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1189 | if (cc == eq) { |
| 1190 | native = strict() ? Builtins::STRICT_EQUALS : Builtins::EQUALS; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1191 | } else { |
| 1192 | native = Builtins::COMPARE; |
| 1193 | int ncr; // NaN compare result |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1194 | if (cc == lt || cc == le) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1195 | ncr = GREATER; |
| 1196 | } else { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1197 | ASSERT(cc == gt || cc == ge); // remaining cases |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1198 | ncr = LESS; |
| 1199 | } |
| 1200 | __ mov(r0, Operand(Smi::FromInt(ncr))); |
| 1201 | __ push(r0); |
| 1202 | } |
| 1203 | |
| 1204 | // Call the native; it returns -1 (less), 0 (equal), or 1 (greater) |
| 1205 | // tagged as a small integer. |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1206 | __ InvokeBuiltin(native, JUMP_FUNCTION); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1207 | |
| 1208 | __ bind(&miss); |
| 1209 | GenerateMiss(masm); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1210 | } |
| 1211 | |
| 1212 | |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1213 | // The stub expects its argument in the tos_ register and returns its result in |
| 1214 | // it, too: zero for false, and a non-zero value for true. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1215 | void ToBooleanStub::Generate(MacroAssembler* masm) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1216 | // This stub overrides SometimesSetsUpAFrame() to return false. That means |
| 1217 | // we cannot call anything that could cause a GC from this stub. |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1218 | Label patch; |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1219 | const Register map = r9.is(tos_) ? r7 : r9; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1220 | |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1221 | // undefined -> false. |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1222 | CheckOddball(masm, UNDEFINED, Heap::kUndefinedValueRootIndex, false); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1223 | |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1224 | // Boolean -> its value. |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1225 | CheckOddball(masm, BOOLEAN, Heap::kFalseValueRootIndex, false); |
| 1226 | CheckOddball(masm, BOOLEAN, Heap::kTrueValueRootIndex, true); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1227 | |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1228 | // 'null' -> false. |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1229 | CheckOddball(masm, NULL_TYPE, Heap::kNullValueRootIndex, false); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1230 | |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1231 | if (types_.Contains(SMI)) { |
| 1232 | // Smis: 0 -> false, all other -> true |
| 1233 | __ tst(tos_, Operand(kSmiTagMask)); |
| 1234 | // tos_ contains the correct return value already |
| 1235 | __ Ret(eq); |
| 1236 | } else if (types_.NeedsMap()) { |
| 1237 | // If we need a map later and have a Smi -> patch. |
| 1238 | __ JumpIfSmi(tos_, &patch); |
| 1239 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1240 | |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1241 | if (types_.NeedsMap()) { |
| 1242 | __ ldr(map, FieldMemOperand(tos_, HeapObject::kMapOffset)); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1243 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1244 | if (types_.CanBeUndetectable()) { |
| 1245 | __ ldrb(ip, FieldMemOperand(map, Map::kBitFieldOffset)); |
| 1246 | __ tst(ip, Operand(1 << Map::kIsUndetectable)); |
| 1247 | // Undetectable -> false. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1248 | __ mov(tos_, Operand::Zero(), LeaveCC, ne); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1249 | __ Ret(ne); |
| 1250 | } |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1251 | } |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1252 | |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1253 | if (types_.Contains(SPEC_OBJECT)) { |
| 1254 | // Spec object -> true. |
| 1255 | __ CompareInstanceType(map, ip, FIRST_SPEC_OBJECT_TYPE); |
| 1256 | // tos_ contains the correct non-zero return value already. |
| 1257 | __ Ret(ge); |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1258 | } |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1259 | |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1260 | if (types_.Contains(STRING)) { |
| 1261 | // String value -> false iff empty. |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1262 | __ CompareInstanceType(map, ip, FIRST_NONSTRING_TYPE); |
| 1263 | __ ldr(tos_, FieldMemOperand(tos_, String::kLengthOffset), lt); |
| 1264 | __ Ret(lt); // the string length is OK as the return value |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1265 | } |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 1266 | |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1267 | if (types_.Contains(HEAP_NUMBER)) { |
| 1268 | // Heap number -> false iff +0, -0, or NaN. |
| 1269 | Label not_heap_number; |
| 1270 | __ CompareRoot(map, Heap::kHeapNumberMapRootIndex); |
| 1271 | __ b(ne, ¬_heap_number); |
mstarzinger@chromium.org | 471f2f1 | 2012-08-10 14:46:33 +0000 | [diff] [blame] | 1272 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1273 | __ vldr(d1, FieldMemOperand(tos_, HeapNumber::kValueOffset)); |
| 1274 | __ VFPCompareAndSetFlags(d1, 0.0); |
| 1275 | // "tos_" is a register, and contains a non zero value by default. |
| 1276 | // Hence we only need to overwrite "tos_" with zero to return false for |
| 1277 | // FP_ZERO or FP_NAN cases. Otherwise, by default it returns true. |
| 1278 | __ mov(tos_, Operand::Zero(), LeaveCC, eq); // for FP_ZERO |
| 1279 | __ mov(tos_, Operand::Zero(), LeaveCC, vs); // for FP_NAN |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1280 | __ Ret(); |
| 1281 | __ bind(¬_heap_number); |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1282 | } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1283 | |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1284 | __ bind(&patch); |
| 1285 | GenerateTypeTransition(masm); |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1286 | } |
| 1287 | |
| 1288 | |
| 1289 | void ToBooleanStub::CheckOddball(MacroAssembler* masm, |
| 1290 | Type type, |
| 1291 | Heap::RootListIndex value, |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 1292 | bool result) { |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1293 | if (types_.Contains(type)) { |
| 1294 | // If we see an expected oddball, return its ToBoolean value tos_. |
| 1295 | __ LoadRoot(ip, value); |
| 1296 | __ cmp(tos_, ip); |
| 1297 | // The value of a root is never NULL, so we can avoid loading a non-null |
| 1298 | // value into tos_ when we want to return 'true'. |
| 1299 | if (!result) { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1300 | __ mov(tos_, Operand::Zero(), LeaveCC, eq); |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1301 | } |
| 1302 | __ Ret(eq); |
kmillikin@chromium.org | 7c2628c | 2011-08-10 11:27:35 +0000 | [diff] [blame] | 1303 | } |
| 1304 | } |
| 1305 | |
| 1306 | |
| 1307 | void ToBooleanStub::GenerateTypeTransition(MacroAssembler* masm) { |
| 1308 | if (!tos_.is(r3)) { |
| 1309 | __ mov(r3, Operand(tos_)); |
| 1310 | } |
| 1311 | __ mov(r2, Operand(Smi::FromInt(tos_.code()))); |
| 1312 | __ mov(r1, Operand(Smi::FromInt(types_.ToByte()))); |
| 1313 | __ Push(r3, r2, r1); |
| 1314 | // Patch the caller to an appropriate specialized stub and return the |
| 1315 | // operation result to the caller of the stub. |
| 1316 | __ TailCallExternalReference( |
| 1317 | ExternalReference(IC_Utility(IC::kToBoolean_Patch), masm->isolate()), |
| 1318 | 3, |
| 1319 | 1); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 1320 | } |
| 1321 | |
| 1322 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1323 | void StoreBufferOverflowStub::Generate(MacroAssembler* masm) { |
| 1324 | // We don't allow a GC during a store buffer overflow so there is no need to |
| 1325 | // store the registers in any particular way, but we do have to store and |
| 1326 | // restore them. |
| 1327 | __ stm(db_w, sp, kCallerSaved | lr.bit()); |
yangguo@chromium.org | 003650e | 2013-01-24 16:31:08 +0000 | [diff] [blame] | 1328 | |
| 1329 | const Register scratch = r1; |
| 1330 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1331 | if (save_doubles_ == kSaveFPRegs) { |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1332 | __ SaveFPRegs(sp, scratch); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1333 | } |
| 1334 | const int argument_count = 1; |
| 1335 | const int fp_argument_count = 0; |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1336 | |
| 1337 | AllowExternalCallThatCantCauseGC scope(masm); |
| 1338 | __ PrepareCallCFunction(argument_count, fp_argument_count, scratch); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1339 | __ mov(r0, Operand(ExternalReference::isolate_address(masm->isolate()))); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1340 | __ CallCFunction( |
| 1341 | ExternalReference::store_buffer_overflow_function(masm->isolate()), |
| 1342 | argument_count); |
| 1343 | if (save_doubles_ == kSaveFPRegs) { |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 1344 | __ RestoreFPRegs(sp, scratch); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1345 | } |
| 1346 | __ ldm(ia_w, sp, kCallerSaved | pc.bit()); // Also pop pc to get Ret(0). |
| 1347 | } |
| 1348 | |
| 1349 | |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 1350 | void UnaryOpStub::PrintName(StringStream* stream) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1351 | const char* op_name = Token::Name(op_); |
| 1352 | const char* overwrite_name = NULL; // Make g++ happy. |
| 1353 | switch (mode_) { |
| 1354 | case UNARY_NO_OVERWRITE: overwrite_name = "Alloc"; break; |
| 1355 | case UNARY_OVERWRITE: overwrite_name = "Overwrite"; break; |
| 1356 | } |
whesse@chromium.org | 030d38e | 2011-07-13 13:23:34 +0000 | [diff] [blame] | 1357 | stream->Add("UnaryOpStub_%s_%s_%s", |
| 1358 | op_name, |
| 1359 | overwrite_name, |
| 1360 | UnaryOpIC::GetName(operand_type_)); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1361 | } |
| 1362 | |
| 1363 | |
| 1364 | // TODO(svenpanne): Use virtual functions instead of switch. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1365 | void UnaryOpStub::Generate(MacroAssembler* masm) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1366 | switch (operand_type_) { |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1367 | case UnaryOpIC::UNINITIALIZED: |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1368 | GenerateTypeTransition(masm); |
| 1369 | break; |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1370 | case UnaryOpIC::SMI: |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1371 | GenerateSmiStub(masm); |
| 1372 | break; |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1373 | case UnaryOpIC::NUMBER: |
| 1374 | GenerateNumberStub(masm); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1375 | break; |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1376 | case UnaryOpIC::GENERIC: |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1377 | GenerateGenericStub(masm); |
| 1378 | break; |
| 1379 | } |
| 1380 | } |
| 1381 | |
| 1382 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1383 | void UnaryOpStub::GenerateTypeTransition(MacroAssembler* masm) { |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1384 | __ mov(r3, Operand(r0)); // the operand |
| 1385 | __ mov(r2, Operand(Smi::FromInt(op_))); |
| 1386 | __ mov(r1, Operand(Smi::FromInt(mode_))); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1387 | __ mov(r0, Operand(Smi::FromInt(operand_type_))); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1388 | __ Push(r3, r2, r1, r0); |
| 1389 | |
| 1390 | __ TailCallExternalReference( |
ricow@chromium.org | 4f693d6 | 2011-07-04 14:01:31 +0000 | [diff] [blame] | 1391 | ExternalReference(IC_Utility(IC::kUnaryOp_Patch), masm->isolate()), 4, 1); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1392 | } |
| 1393 | |
| 1394 | |
| 1395 | // TODO(svenpanne): Use virtual functions instead of switch. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1396 | void UnaryOpStub::GenerateSmiStub(MacroAssembler* masm) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1397 | switch (op_) { |
| 1398 | case Token::SUB: |
| 1399 | GenerateSmiStubSub(masm); |
| 1400 | break; |
| 1401 | case Token::BIT_NOT: |
| 1402 | GenerateSmiStubBitNot(masm); |
| 1403 | break; |
| 1404 | default: |
| 1405 | UNREACHABLE(); |
| 1406 | } |
| 1407 | } |
| 1408 | |
| 1409 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1410 | void UnaryOpStub::GenerateSmiStubSub(MacroAssembler* masm) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1411 | Label non_smi, slow; |
| 1412 | GenerateSmiCodeSub(masm, &non_smi, &slow); |
| 1413 | __ bind(&non_smi); |
| 1414 | __ bind(&slow); |
| 1415 | GenerateTypeTransition(masm); |
| 1416 | } |
| 1417 | |
| 1418 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1419 | void UnaryOpStub::GenerateSmiStubBitNot(MacroAssembler* masm) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1420 | Label non_smi; |
| 1421 | GenerateSmiCodeBitNot(masm, &non_smi); |
| 1422 | __ bind(&non_smi); |
| 1423 | GenerateTypeTransition(masm); |
| 1424 | } |
| 1425 | |
| 1426 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1427 | void UnaryOpStub::GenerateSmiCodeSub(MacroAssembler* masm, |
| 1428 | Label* non_smi, |
| 1429 | Label* slow) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1430 | __ JumpIfNotSmi(r0, non_smi); |
| 1431 | |
| 1432 | // The result of negating zero or the smallest negative smi is not a smi. |
| 1433 | __ bic(ip, r0, Operand(0x80000000), SetCC); |
| 1434 | __ b(eq, slow); |
| 1435 | |
| 1436 | // Return '0 - value'. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1437 | __ rsb(r0, r0, Operand::Zero()); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1438 | __ Ret(); |
| 1439 | } |
| 1440 | |
| 1441 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1442 | void UnaryOpStub::GenerateSmiCodeBitNot(MacroAssembler* masm, |
| 1443 | Label* non_smi) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1444 | __ JumpIfNotSmi(r0, non_smi); |
| 1445 | |
| 1446 | // Flip bits and revert inverted smi-tag. |
| 1447 | __ mvn(r0, Operand(r0)); |
| 1448 | __ bic(r0, r0, Operand(kSmiTagMask)); |
| 1449 | __ Ret(); |
| 1450 | } |
| 1451 | |
| 1452 | |
| 1453 | // TODO(svenpanne): Use virtual functions instead of switch. |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1454 | void UnaryOpStub::GenerateNumberStub(MacroAssembler* masm) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1455 | switch (op_) { |
| 1456 | case Token::SUB: |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1457 | GenerateNumberStubSub(masm); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1458 | break; |
| 1459 | case Token::BIT_NOT: |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1460 | GenerateNumberStubBitNot(masm); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1461 | break; |
| 1462 | default: |
| 1463 | UNREACHABLE(); |
| 1464 | } |
| 1465 | } |
| 1466 | |
| 1467 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1468 | void UnaryOpStub::GenerateNumberStubSub(MacroAssembler* masm) { |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1469 | Label non_smi, slow, call_builtin; |
| 1470 | GenerateSmiCodeSub(masm, &non_smi, &call_builtin); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1471 | __ bind(&non_smi); |
| 1472 | GenerateHeapNumberCodeSub(masm, &slow); |
| 1473 | __ bind(&slow); |
| 1474 | GenerateTypeTransition(masm); |
ager@chromium.org | ea91cc5 | 2011-05-23 06:06:11 +0000 | [diff] [blame] | 1475 | __ bind(&call_builtin); |
| 1476 | GenerateGenericCodeFallback(masm); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1477 | } |
| 1478 | |
| 1479 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1480 | void UnaryOpStub::GenerateNumberStubBitNot(MacroAssembler* masm) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1481 | Label non_smi, slow; |
| 1482 | GenerateSmiCodeBitNot(masm, &non_smi); |
| 1483 | __ bind(&non_smi); |
| 1484 | GenerateHeapNumberCodeBitNot(masm, &slow); |
| 1485 | __ bind(&slow); |
| 1486 | GenerateTypeTransition(masm); |
| 1487 | } |
| 1488 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1489 | void UnaryOpStub::GenerateHeapNumberCodeSub(MacroAssembler* masm, |
| 1490 | Label* slow) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1491 | EmitCheckForHeapNumber(masm, r0, r1, r6, slow); |
| 1492 | // r0 is a heap number. Get a new heap number in r1. |
| 1493 | if (mode_ == UNARY_OVERWRITE) { |
| 1494 | __ ldr(r2, FieldMemOperand(r0, HeapNumber::kExponentOffset)); |
| 1495 | __ eor(r2, r2, Operand(HeapNumber::kSignMask)); // Flip sign. |
| 1496 | __ str(r2, FieldMemOperand(r0, HeapNumber::kExponentOffset)); |
| 1497 | } else { |
| 1498 | Label slow_allocate_heapnumber, heapnumber_allocated; |
| 1499 | __ AllocateHeapNumber(r1, r2, r3, r6, &slow_allocate_heapnumber); |
| 1500 | __ jmp(&heapnumber_allocated); |
| 1501 | |
| 1502 | __ bind(&slow_allocate_heapnumber); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1503 | { |
| 1504 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1505 | __ push(r0); |
| 1506 | __ CallRuntime(Runtime::kNumberAlloc, 0); |
| 1507 | __ mov(r1, Operand(r0)); |
| 1508 | __ pop(r0); |
| 1509 | } |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1510 | |
| 1511 | __ bind(&heapnumber_allocated); |
| 1512 | __ ldr(r3, FieldMemOperand(r0, HeapNumber::kMantissaOffset)); |
| 1513 | __ ldr(r2, FieldMemOperand(r0, HeapNumber::kExponentOffset)); |
| 1514 | __ str(r3, FieldMemOperand(r1, HeapNumber::kMantissaOffset)); |
| 1515 | __ eor(r2, r2, Operand(HeapNumber::kSignMask)); // Flip sign. |
| 1516 | __ str(r2, FieldMemOperand(r1, HeapNumber::kExponentOffset)); |
| 1517 | __ mov(r0, Operand(r1)); |
| 1518 | } |
| 1519 | __ Ret(); |
| 1520 | } |
| 1521 | |
| 1522 | |
ulan@chromium.org | 6e196bf | 2013-03-13 09:38:22 +0000 | [diff] [blame] | 1523 | void UnaryOpStub::GenerateHeapNumberCodeBitNot(MacroAssembler* masm, |
| 1524 | Label* slow) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1525 | EmitCheckForHeapNumber(masm, r0, r1, r6, slow); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1526 | |
ulan@chromium.org | 6e196bf | 2013-03-13 09:38:22 +0000 | [diff] [blame] | 1527 | // Convert the heap number in r0 to an untagged integer in r1. |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1528 | __ vldr(d0, FieldMemOperand(r0, HeapNumber::kValueOffset)); |
| 1529 | __ ECMAToInt32(r1, d0, r2, r3, r4, d1); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1530 | |
| 1531 | // Do the bitwise operation and check if the result fits in a smi. |
| 1532 | Label try_float; |
| 1533 | __ mvn(r1, Operand(r1)); |
ulan@chromium.org | 6e196bf | 2013-03-13 09:38:22 +0000 | [diff] [blame] | 1534 | __ cmn(r1, Operand(0x40000000)); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1535 | __ b(mi, &try_float); |
| 1536 | |
| 1537 | // Tag the result as a smi and we're done. |
| 1538 | __ mov(r0, Operand(r1, LSL, kSmiTagSize)); |
| 1539 | __ Ret(); |
| 1540 | |
| 1541 | // Try to store the result in a heap number. |
| 1542 | __ bind(&try_float); |
| 1543 | if (mode_ == UNARY_NO_OVERWRITE) { |
| 1544 | Label slow_allocate_heapnumber, heapnumber_allocated; |
ulan@chromium.org | 6e196bf | 2013-03-13 09:38:22 +0000 | [diff] [blame] | 1545 | __ AllocateHeapNumber(r0, r3, r4, r6, &slow_allocate_heapnumber); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1546 | __ jmp(&heapnumber_allocated); |
| 1547 | |
| 1548 | __ bind(&slow_allocate_heapnumber); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1549 | { |
| 1550 | FrameScope scope(masm, StackFrame::INTERNAL); |
ulan@chromium.org | 6e196bf | 2013-03-13 09:38:22 +0000 | [diff] [blame] | 1551 | // Push the lower bit of the result (left shifted to look like a smi). |
| 1552 | __ mov(r2, Operand(r1, LSL, 31)); |
| 1553 | // Push the 31 high bits (bit 0 cleared to look like a smi). |
| 1554 | __ bic(r1, r1, Operand(1)); |
| 1555 | __ Push(r2, r1); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1556 | __ CallRuntime(Runtime::kNumberAlloc, 0); |
ulan@chromium.org | 6e196bf | 2013-03-13 09:38:22 +0000 | [diff] [blame] | 1557 | __ Pop(r2, r1); // Restore the result. |
| 1558 | __ orr(r1, r1, Operand(r2, LSR, 31)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 1559 | } |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1560 | __ bind(&heapnumber_allocated); |
| 1561 | } |
| 1562 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1563 | __ vmov(s0, r1); |
| 1564 | __ vcvt_f64_s32(d0, s0); |
| 1565 | __ vstr(d0, FieldMemOperand(r0, HeapNumber::kValueOffset)); |
| 1566 | __ Ret(); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1567 | } |
| 1568 | |
| 1569 | |
| 1570 | // TODO(svenpanne): Use virtual functions instead of switch. |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1571 | void UnaryOpStub::GenerateGenericStub(MacroAssembler* masm) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1572 | switch (op_) { |
| 1573 | case Token::SUB: |
| 1574 | GenerateGenericStubSub(masm); |
| 1575 | break; |
| 1576 | case Token::BIT_NOT: |
| 1577 | GenerateGenericStubBitNot(masm); |
| 1578 | break; |
| 1579 | default: |
| 1580 | UNREACHABLE(); |
| 1581 | } |
| 1582 | } |
| 1583 | |
| 1584 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1585 | void UnaryOpStub::GenerateGenericStubSub(MacroAssembler* masm) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1586 | Label non_smi, slow; |
| 1587 | GenerateSmiCodeSub(masm, &non_smi, &slow); |
| 1588 | __ bind(&non_smi); |
| 1589 | GenerateHeapNumberCodeSub(masm, &slow); |
| 1590 | __ bind(&slow); |
| 1591 | GenerateGenericCodeFallback(masm); |
| 1592 | } |
| 1593 | |
| 1594 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1595 | void UnaryOpStub::GenerateGenericStubBitNot(MacroAssembler* masm) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1596 | Label non_smi, slow; |
| 1597 | GenerateSmiCodeBitNot(masm, &non_smi); |
| 1598 | __ bind(&non_smi); |
| 1599 | GenerateHeapNumberCodeBitNot(masm, &slow); |
| 1600 | __ bind(&slow); |
| 1601 | GenerateGenericCodeFallback(masm); |
| 1602 | } |
| 1603 | |
| 1604 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1605 | void UnaryOpStub::GenerateGenericCodeFallback(MacroAssembler* masm) { |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 1606 | // Handle the slow case by jumping to the JavaScript builtin. |
| 1607 | __ push(r0); |
| 1608 | switch (op_) { |
| 1609 | case Token::SUB: |
| 1610 | __ InvokeBuiltin(Builtins::UNARY_MINUS, JUMP_FUNCTION); |
| 1611 | break; |
| 1612 | case Token::BIT_NOT: |
| 1613 | __ InvokeBuiltin(Builtins::BIT_NOT, JUMP_FUNCTION); |
| 1614 | break; |
| 1615 | default: |
| 1616 | UNREACHABLE(); |
| 1617 | } |
| 1618 | } |
| 1619 | |
| 1620 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1621 | // Generates code to call a C function to do a double operation. |
| 1622 | // This code never falls through, but returns with a heap number containing |
| 1623 | // the result in r0. |
| 1624 | // Register heapnumber_result must be a heap number in which the |
| 1625 | // result of the operation will be stored. |
| 1626 | // Requires the following layout on entry: |
| 1627 | // d0: Left value. |
| 1628 | // d1: Right value. |
| 1629 | // If soft float ABI, use also r0, r1, r2, r3. |
| 1630 | static void CallCCodeForDoubleOperation(MacroAssembler* masm, |
| 1631 | Token::Value op, |
| 1632 | Register heap_number_result, |
| 1633 | Register scratch) { |
| 1634 | // Assert that heap_number_result is callee-saved. |
| 1635 | // We currently always use r5 to pass it. |
| 1636 | ASSERT(heap_number_result.is(r5)); |
| 1637 | |
| 1638 | // Push the current return address before the C call. Return will be |
| 1639 | // through pop(pc) below. |
| 1640 | __ push(lr); |
| 1641 | __ PrepareCallCFunction(0, 2, scratch); |
| 1642 | if (!masm->use_eabi_hardfloat()) { |
| 1643 | __ vmov(r0, r1, d0); |
| 1644 | __ vmov(r2, r3, d1); |
| 1645 | } |
| 1646 | { |
| 1647 | AllowExternalCallThatCantCauseGC scope(masm); |
| 1648 | __ CallCFunction( |
| 1649 | ExternalReference::double_fp_operation(op, masm->isolate()), 0, 2); |
| 1650 | } |
| 1651 | // Store answer in the overwritable heap number. Double returned in |
| 1652 | // registers r0 and r1 or in d0. |
| 1653 | if (masm->use_eabi_hardfloat()) { |
| 1654 | __ vstr(d0, FieldMemOperand(heap_number_result, HeapNumber::kValueOffset)); |
| 1655 | } else { |
| 1656 | __ Strd(r0, r1, |
| 1657 | FieldMemOperand(heap_number_result, HeapNumber::kValueOffset)); |
| 1658 | } |
| 1659 | // Place heap_number_result in r0 and return to the pushed return address. |
| 1660 | __ mov(r0, Operand(heap_number_result)); |
| 1661 | __ pop(pc); |
| 1662 | } |
| 1663 | |
| 1664 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1665 | void BinaryOpStub::Initialize() { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 1666 | platform_specific_bit_ = true; // VFP2 is a base requirement for V8 |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1667 | } |
| 1668 | |
| 1669 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1670 | void BinaryOpStub::GenerateTypeTransition(MacroAssembler* masm) { |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 1671 | Label get_result; |
| 1672 | |
| 1673 | __ Push(r1, r0); |
| 1674 | |
| 1675 | __ mov(r2, Operand(Smi::FromInt(MinorKey()))); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1676 | __ push(r2); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 1677 | |
| 1678 | __ TailCallExternalReference( |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1679 | ExternalReference(IC_Utility(IC::kBinaryOp_Patch), |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 1680 | masm->isolate()), |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1681 | 3, |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 1682 | 1); |
| 1683 | } |
| 1684 | |
| 1685 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 1686 | void BinaryOpStub::GenerateTypeTransitionWithSavedArgs( |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 1687 | MacroAssembler* masm) { |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 1688 | UNIMPLEMENTED(); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 1689 | } |
| 1690 | |
| 1691 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1692 | void BinaryOpStub_GenerateSmiSmiOperation(MacroAssembler* masm, |
| 1693 | Token::Value op) { |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 1694 | Register left = r1; |
| 1695 | Register right = r0; |
| 1696 | Register scratch1 = r7; |
| 1697 | Register scratch2 = r9; |
| 1698 | |
| 1699 | ASSERT(right.is(r0)); |
| 1700 | STATIC_ASSERT(kSmiTag == 0); |
| 1701 | |
| 1702 | Label not_smi_result; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1703 | switch (op) { |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 1704 | case Token::ADD: |
| 1705 | __ add(right, left, Operand(right), SetCC); // Add optimistically. |
| 1706 | __ Ret(vc); |
| 1707 | __ sub(right, right, Operand(left)); // Revert optimistic add. |
| 1708 | break; |
| 1709 | case Token::SUB: |
| 1710 | __ sub(right, left, Operand(right), SetCC); // Subtract optimistically. |
| 1711 | __ Ret(vc); |
| 1712 | __ sub(right, left, Operand(right)); // Revert optimistic subtract. |
| 1713 | break; |
| 1714 | case Token::MUL: |
| 1715 | // Remove tag from one of the operands. This way the multiplication result |
| 1716 | // will be a smi if it fits the smi range. |
| 1717 | __ SmiUntag(ip, right); |
| 1718 | // Do multiplication |
| 1719 | // scratch1 = lower 32 bits of ip * left. |
| 1720 | // scratch2 = higher 32 bits of ip * left. |
| 1721 | __ smull(scratch1, scratch2, left, ip); |
| 1722 | // Check for overflowing the smi range - no overflow if higher 33 bits of |
| 1723 | // the result are identical. |
| 1724 | __ mov(ip, Operand(scratch1, ASR, 31)); |
| 1725 | __ cmp(ip, Operand(scratch2)); |
| 1726 | __ b(ne, ¬_smi_result); |
| 1727 | // Go slow on zero result to handle -0. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1728 | __ cmp(scratch1, Operand::Zero()); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 1729 | __ mov(right, Operand(scratch1), LeaveCC, ne); |
| 1730 | __ Ret(ne); |
| 1731 | // We need -0 if we were multiplying a negative number with 0 to get 0. |
| 1732 | // We know one of them was zero. |
| 1733 | __ add(scratch2, right, Operand(left), SetCC); |
| 1734 | __ mov(right, Operand(Smi::FromInt(0)), LeaveCC, pl); |
| 1735 | __ Ret(pl); // Return smi 0 if the non-zero one was positive. |
| 1736 | // We fall through here if we multiplied a negative number with 0, because |
| 1737 | // that would mean we should produce -0. |
| 1738 | break; |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1739 | case Token::DIV: { |
| 1740 | Label div_with_sdiv; |
| 1741 | |
| 1742 | // Check for 0 divisor. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1743 | __ cmp(right, Operand::Zero()); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1744 | __ b(eq, ¬_smi_result); |
| 1745 | |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1746 | // Check for power of two on the right hand side. |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1747 | __ sub(scratch1, right, Operand(1)); |
| 1748 | __ tst(scratch1, right); |
| 1749 | if (CpuFeatures::IsSupported(SUDIV)) { |
| 1750 | __ b(ne, &div_with_sdiv); |
| 1751 | // Check for no remainder. |
| 1752 | __ tst(left, scratch1); |
| 1753 | __ b(ne, ¬_smi_result); |
| 1754 | // Check for positive left hand side. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1755 | __ cmp(left, Operand::Zero()); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1756 | __ b(mi, &div_with_sdiv); |
| 1757 | } else { |
| 1758 | __ b(ne, ¬_smi_result); |
| 1759 | // Check for positive and no remainder. |
| 1760 | __ orr(scratch2, scratch1, Operand(0x80000000u)); |
| 1761 | __ tst(left, scratch2); |
| 1762 | __ b(ne, ¬_smi_result); |
| 1763 | } |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1764 | |
| 1765 | // Perform division by shifting. |
mstarzinger@chromium.org | b228be0 | 2013-04-18 14:56:59 +0000 | [diff] [blame] | 1766 | __ clz(scratch1, scratch1); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1767 | __ rsb(scratch1, scratch1, Operand(31)); |
| 1768 | __ mov(right, Operand(left, LSR, scratch1)); |
| 1769 | __ Ret(); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1770 | |
| 1771 | if (CpuFeatures::IsSupported(SUDIV)) { |
| 1772 | Label result_not_zero; |
| 1773 | |
| 1774 | __ bind(&div_with_sdiv); |
| 1775 | // Do division. |
| 1776 | __ sdiv(scratch1, left, right); |
| 1777 | // Check that the remainder is zero. |
| 1778 | __ mls(scratch2, scratch1, right, left); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1779 | __ cmp(scratch2, Operand::Zero()); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1780 | __ b(ne, ¬_smi_result); |
| 1781 | // Check for negative zero result. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1782 | __ cmp(scratch1, Operand::Zero()); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1783 | __ b(ne, &result_not_zero); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1784 | __ cmp(right, Operand::Zero()); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1785 | __ b(lt, ¬_smi_result); |
| 1786 | __ bind(&result_not_zero); |
| 1787 | // Check for the corner case of dividing the most negative smi by -1. |
| 1788 | __ cmp(scratch1, Operand(0x40000000)); |
| 1789 | __ b(eq, ¬_smi_result); |
| 1790 | // Tag and return the result. |
| 1791 | __ SmiTag(right, scratch1); |
| 1792 | __ Ret(); |
| 1793 | } |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1794 | break; |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1795 | } |
| 1796 | case Token::MOD: { |
| 1797 | Label modulo_with_sdiv; |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1798 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1799 | if (CpuFeatures::IsSupported(SUDIV)) { |
| 1800 | // Check for x % 0. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1801 | __ cmp(right, Operand::Zero()); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1802 | __ b(eq, ¬_smi_result); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1803 | |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1804 | // Check for two positive smis. |
| 1805 | __ orr(scratch1, left, Operand(right)); |
| 1806 | __ tst(scratch1, Operand(0x80000000u)); |
| 1807 | __ b(ne, &modulo_with_sdiv); |
| 1808 | |
| 1809 | // Check for power of two on the right hand side. |
| 1810 | __ sub(scratch1, right, Operand(1)); |
| 1811 | __ tst(scratch1, right); |
| 1812 | __ b(ne, &modulo_with_sdiv); |
| 1813 | } else { |
| 1814 | // Check for two positive smis. |
| 1815 | __ orr(scratch1, left, Operand(right)); |
| 1816 | __ tst(scratch1, Operand(0x80000000u)); |
| 1817 | __ b(ne, ¬_smi_result); |
| 1818 | |
| 1819 | // Check for power of two on the right hand side. |
| 1820 | __ JumpIfNotPowerOfTwoOrZero(right, scratch1, ¬_smi_result); |
| 1821 | } |
| 1822 | |
| 1823 | // Perform modulus by masking (scratch1 contains right - 1). |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1824 | __ and_(right, left, Operand(scratch1)); |
| 1825 | __ Ret(); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1826 | |
| 1827 | if (CpuFeatures::IsSupported(SUDIV)) { |
| 1828 | __ bind(&modulo_with_sdiv); |
| 1829 | __ mov(scratch2, right); |
| 1830 | // Perform modulus with sdiv and mls. |
| 1831 | __ sdiv(scratch1, left, right); |
| 1832 | __ mls(right, scratch1, right, left); |
| 1833 | // Return if the result is not 0. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1834 | __ cmp(right, Operand::Zero()); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1835 | __ Ret(ne); |
| 1836 | // The result is 0, check for -0 case. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 1837 | __ cmp(left, Operand::Zero()); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1838 | __ Ret(pl); |
| 1839 | // This is a -0 case, restore the value of right. |
| 1840 | __ mov(right, scratch2); |
| 1841 | // We fall through here to not_smi_result to produce -0. |
| 1842 | } |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1843 | break; |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 1844 | } |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1845 | case Token::BIT_OR: |
| 1846 | __ orr(right, left, Operand(right)); |
| 1847 | __ Ret(); |
| 1848 | break; |
| 1849 | case Token::BIT_AND: |
| 1850 | __ and_(right, left, Operand(right)); |
| 1851 | __ Ret(); |
| 1852 | break; |
| 1853 | case Token::BIT_XOR: |
| 1854 | __ eor(right, left, Operand(right)); |
| 1855 | __ Ret(); |
| 1856 | break; |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 1857 | case Token::SAR: |
| 1858 | // Remove tags from right operand. |
| 1859 | __ GetLeastBitsFromSmi(scratch1, right, 5); |
| 1860 | __ mov(right, Operand(left, ASR, scratch1)); |
| 1861 | // Smi tag result. |
| 1862 | __ bic(right, right, Operand(kSmiTagMask)); |
| 1863 | __ Ret(); |
| 1864 | break; |
| 1865 | case Token::SHR: |
| 1866 | // Remove tags from operands. We can't do this on a 31 bit number |
| 1867 | // because then the 0s get shifted into bit 30 instead of bit 31. |
| 1868 | __ SmiUntag(scratch1, left); |
| 1869 | __ GetLeastBitsFromSmi(scratch2, right, 5); |
| 1870 | __ mov(scratch1, Operand(scratch1, LSR, scratch2)); |
| 1871 | // Unsigned shift is not allowed to produce a negative number, so |
| 1872 | // check the sign bit and the sign bit after Smi tagging. |
| 1873 | __ tst(scratch1, Operand(0xc0000000)); |
| 1874 | __ b(ne, ¬_smi_result); |
| 1875 | // Smi tag result. |
| 1876 | __ SmiTag(right, scratch1); |
| 1877 | __ Ret(); |
| 1878 | break; |
| 1879 | case Token::SHL: |
| 1880 | // Remove tags from operands. |
| 1881 | __ SmiUntag(scratch1, left); |
| 1882 | __ GetLeastBitsFromSmi(scratch2, right, 5); |
| 1883 | __ mov(scratch1, Operand(scratch1, LSL, scratch2)); |
| 1884 | // Check that the signed result fits in a Smi. |
| 1885 | __ add(scratch2, scratch1, Operand(0x40000000), SetCC); |
| 1886 | __ b(mi, ¬_smi_result); |
| 1887 | __ SmiTag(right, scratch1); |
| 1888 | __ Ret(); |
| 1889 | break; |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 1890 | default: |
| 1891 | UNREACHABLE(); |
| 1892 | } |
| 1893 | __ bind(¬_smi_result); |
| 1894 | } |
| 1895 | |
| 1896 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1897 | void BinaryOpStub_GenerateHeapResultAllocation(MacroAssembler* masm, |
| 1898 | Register result, |
| 1899 | Register heap_number_map, |
| 1900 | Register scratch1, |
| 1901 | Register scratch2, |
| 1902 | Label* gc_required, |
| 1903 | OverwriteMode mode); |
| 1904 | |
| 1905 | |
| 1906 | void BinaryOpStub_GenerateFPOperation(MacroAssembler* masm, |
| 1907 | BinaryOpIC::TypeInfo left_type, |
| 1908 | BinaryOpIC::TypeInfo right_type, |
| 1909 | bool smi_operands, |
| 1910 | Label* not_numbers, |
| 1911 | Label* gc_required, |
| 1912 | Label* miss, |
| 1913 | Token::Value op, |
| 1914 | OverwriteMode mode) { |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1915 | Register left = r1; |
| 1916 | Register right = r0; |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 1917 | Register scratch1 = r6; |
| 1918 | Register scratch2 = r7; |
whesse@chromium.org | b08986c | 2011-03-14 16:13:42 +0000 | [diff] [blame] | 1919 | Register scratch3 = r4; |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1920 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1921 | ASSERT(smi_operands || (not_numbers != NULL)); |
svenpanne@chromium.org | c859c4f | 2012-10-15 11:51:39 +0000 | [diff] [blame] | 1922 | if (smi_operands) { |
| 1923 | __ AssertSmi(left); |
| 1924 | __ AssertSmi(right); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1925 | } |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1926 | if (left_type == BinaryOpIC::SMI) { |
| 1927 | __ JumpIfNotSmi(left, miss); |
| 1928 | } |
| 1929 | if (right_type == BinaryOpIC::SMI) { |
| 1930 | __ JumpIfNotSmi(right, miss); |
| 1931 | } |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1932 | |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 1933 | Register heap_number_map = r9; |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1934 | __ LoadRoot(heap_number_map, Heap::kHeapNumberMapRootIndex); |
| 1935 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1936 | switch (op) { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1937 | case Token::ADD: |
| 1938 | case Token::SUB: |
| 1939 | case Token::MUL: |
| 1940 | case Token::DIV: |
| 1941 | case Token::MOD: { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1942 | // Allocate new heap number for result. |
| 1943 | Register result = r5; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1944 | BinaryOpStub_GenerateHeapResultAllocation( |
| 1945 | masm, result, heap_number_map, scratch1, scratch2, gc_required, mode); |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1946 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1947 | // Load left and right operands into d0 and d1. |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1948 | if (smi_operands) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1949 | __ SmiUntag(scratch1, right); |
| 1950 | __ vmov(d1.high(), scratch1); |
| 1951 | __ vcvt_f64_s32(d1, d1.high()); |
| 1952 | __ SmiUntag(scratch1, left); |
| 1953 | __ vmov(d0.high(), scratch1); |
| 1954 | __ vcvt_f64_s32(d0, d0.high()); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1955 | } else { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1956 | // Load right operand into d1. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1957 | if (right_type == BinaryOpIC::INT32) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1958 | __ LoadNumberAsInt32Double( |
| 1959 | right, d1, heap_number_map, scratch1, d8, miss); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1960 | } else { |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1961 | Label* fail = (right_type == BinaryOpIC::NUMBER) ? miss : not_numbers; |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1962 | __ LoadNumber(right, d1, heap_number_map, scratch1, fail); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1963 | } |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1964 | // Load left operand into d0. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1965 | if (left_type == BinaryOpIC::INT32) { |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1966 | __ LoadNumberAsInt32Double( |
| 1967 | left, d0, heap_number_map, scratch1, d8, miss); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1968 | } else { |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 1969 | Label* fail = (left_type == BinaryOpIC::NUMBER) ? miss : not_numbers; |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1970 | __ LoadNumber( |
| 1971 | left, d0, heap_number_map, scratch1, fail); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1972 | } |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1973 | } |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1974 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1975 | // Calculate the result. |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1976 | if (op != Token::MOD) { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1977 | // Using VFP registers: |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1978 | // d0: Left value |
| 1979 | // d1: Right value |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 1980 | switch (op) { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1981 | case Token::ADD: |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1982 | __ vadd(d5, d0, d1); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1983 | break; |
| 1984 | case Token::SUB: |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1985 | __ vsub(d5, d0, d1); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1986 | break; |
| 1987 | case Token::MUL: |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1988 | __ vmul(d5, d0, d1); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1989 | break; |
| 1990 | case Token::DIV: |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 1991 | __ vdiv(d5, d0, d1); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1992 | break; |
| 1993 | default: |
| 1994 | UNREACHABLE(); |
| 1995 | } |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 1996 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 1997 | __ sub(r0, result, Operand(kHeapObjectTag)); |
| 1998 | __ vstr(d5, r0, HeapNumber::kValueOffset); |
| 1999 | __ add(r0, r0, Operand(kHeapObjectTag)); |
| 2000 | __ Ret(); |
| 2001 | } else { |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2002 | // Call the C function to handle the double operation. |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2003 | CallCCodeForDoubleOperation(masm, op, result, scratch1); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2004 | if (FLAG_debug_code) { |
| 2005 | __ stop("Unreachable code."); |
| 2006 | } |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2007 | } |
| 2008 | break; |
| 2009 | } |
| 2010 | case Token::BIT_OR: |
| 2011 | case Token::BIT_XOR: |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2012 | case Token::BIT_AND: |
| 2013 | case Token::SAR: |
| 2014 | case Token::SHR: |
| 2015 | case Token::SHL: { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2016 | if (smi_operands) { |
| 2017 | __ SmiUntag(r3, left); |
| 2018 | __ SmiUntag(r2, right); |
| 2019 | } else { |
| 2020 | // Convert operands to 32-bit integers. Right in r2 and left in r3. |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2021 | __ ConvertNumberToInt32( |
| 2022 | left, r3, heap_number_map, |
| 2023 | scratch1, scratch2, scratch3, d0, d1, not_numbers); |
| 2024 | __ ConvertNumberToInt32( |
| 2025 | right, r2, heap_number_map, |
| 2026 | scratch1, scratch2, scratch3, d0, d1, not_numbers); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2027 | } |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2028 | |
| 2029 | Label result_not_a_smi; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2030 | switch (op) { |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2031 | case Token::BIT_OR: |
| 2032 | __ orr(r2, r3, Operand(r2)); |
| 2033 | break; |
| 2034 | case Token::BIT_XOR: |
| 2035 | __ eor(r2, r3, Operand(r2)); |
| 2036 | break; |
| 2037 | case Token::BIT_AND: |
| 2038 | __ and_(r2, r3, Operand(r2)); |
| 2039 | break; |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2040 | case Token::SAR: |
| 2041 | // Use only the 5 least significant bits of the shift count. |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2042 | __ GetLeastBitsFromInt32(r2, r2, 5); |
| 2043 | __ mov(r2, Operand(r3, ASR, r2)); |
| 2044 | break; |
| 2045 | case Token::SHR: |
| 2046 | // Use only the 5 least significant bits of the shift count. |
| 2047 | __ GetLeastBitsFromInt32(r2, r2, 5); |
| 2048 | __ mov(r2, Operand(r3, LSR, r2), SetCC); |
| 2049 | // SHR is special because it is required to produce a positive answer. |
| 2050 | // The code below for writing into heap numbers isn't capable of |
| 2051 | // writing the register as an unsigned int so we go to slow case if we |
| 2052 | // hit this case. |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2053 | __ b(mi, &result_not_a_smi); |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 2054 | break; |
| 2055 | case Token::SHL: |
| 2056 | // Use only the 5 least significant bits of the shift count. |
| 2057 | __ GetLeastBitsFromInt32(r2, r2, 5); |
| 2058 | __ mov(r2, Operand(r3, LSL, r2)); |
| 2059 | break; |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2060 | default: |
| 2061 | UNREACHABLE(); |
| 2062 | } |
| 2063 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2064 | // Check that the *signed* result fits in a smi. |
| 2065 | __ add(r3, r2, Operand(0x40000000), SetCC); |
| 2066 | __ b(mi, &result_not_a_smi); |
| 2067 | __ SmiTag(r0, r2); |
| 2068 | __ Ret(); |
| 2069 | |
| 2070 | // Allocate new heap number for result. |
| 2071 | __ bind(&result_not_a_smi); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2072 | Register result = r5; |
| 2073 | if (smi_operands) { |
| 2074 | __ AllocateHeapNumber( |
| 2075 | result, scratch1, scratch2, heap_number_map, gc_required); |
| 2076 | } else { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2077 | BinaryOpStub_GenerateHeapResultAllocation( |
| 2078 | masm, result, heap_number_map, scratch1, scratch2, gc_required, |
| 2079 | mode); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2080 | } |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2081 | |
| 2082 | // r2: Answer as signed int32. |
| 2083 | // r5: Heap number to write answer into. |
| 2084 | |
| 2085 | // Nothing can go wrong now, so move the heap number to r0, which is the |
| 2086 | // result. |
| 2087 | __ mov(r0, Operand(r5)); |
| 2088 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2089 | // Convert the int32 in r2 to the heap number in r0. r3 is corrupted. As |
| 2090 | // mentioned above SHR needs to always produce a positive result. |
| 2091 | __ vmov(s0, r2); |
| 2092 | if (op == Token::SHR) { |
| 2093 | __ vcvt_f64_u32(d0, s0); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2094 | } else { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2095 | __ vcvt_f64_s32(d0, s0); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2096 | } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2097 | __ sub(r3, r0, Operand(kHeapObjectTag)); |
| 2098 | __ vstr(d0, r3, HeapNumber::kValueOffset); |
| 2099 | __ Ret(); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 2100 | break; |
| 2101 | } |
| 2102 | default: |
| 2103 | UNREACHABLE(); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2104 | } |
| 2105 | } |
| 2106 | |
| 2107 | |
| 2108 | // Generate the smi code. If the operation on smis are successful this return is |
| 2109 | // generated. If the result is not a smi and heap number allocation is not |
| 2110 | // requested the code falls through. If number allocation is requested but a |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2111 | // heap number cannot be allocated the code jumps to the label gc_required. |
| 2112 | void BinaryOpStub_GenerateSmiCode( |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2113 | MacroAssembler* masm, |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2114 | Label* use_runtime, |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2115 | Label* gc_required, |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2116 | Token::Value op, |
| 2117 | BinaryOpStub::SmiCodeGenerateHeapNumberResults allow_heapnumber_results, |
| 2118 | OverwriteMode mode) { |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2119 | Label not_smis; |
| 2120 | |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2121 | Register left = r1; |
| 2122 | Register right = r0; |
| 2123 | Register scratch1 = r7; |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2124 | |
| 2125 | // Perform combined smi check on both operands. |
| 2126 | __ orr(scratch1, left, Operand(right)); |
| 2127 | STATIC_ASSERT(kSmiTag == 0); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2128 | __ JumpIfNotSmi(scratch1, ¬_smis); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2129 | |
kmillikin@chromium.org | 31b1277 | 2011-02-02 16:08:26 +0000 | [diff] [blame] | 2130 | // If the smi-smi operation results in a smi return is generated. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2131 | BinaryOpStub_GenerateSmiSmiOperation(masm, op); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2132 | |
| 2133 | // If heap number results are possible generate the result in an allocated |
| 2134 | // heap number. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2135 | if (allow_heapnumber_results == BinaryOpStub::ALLOW_HEAPNUMBER_RESULTS) { |
| 2136 | BinaryOpStub_GenerateFPOperation( |
| 2137 | masm, BinaryOpIC::UNINITIALIZED, BinaryOpIC::UNINITIALIZED, true, |
| 2138 | use_runtime, gc_required, ¬_smis, op, mode); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2139 | } |
| 2140 | __ bind(¬_smis); |
| 2141 | } |
| 2142 | |
| 2143 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2144 | void BinaryOpStub::GenerateSmiStub(MacroAssembler* masm) { |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2145 | Label not_smis, call_runtime; |
| 2146 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2147 | if (result_type_ == BinaryOpIC::UNINITIALIZED || |
| 2148 | result_type_ == BinaryOpIC::SMI) { |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2149 | // Only allow smi results. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2150 | BinaryOpStub_GenerateSmiCode( |
| 2151 | masm, &call_runtime, NULL, op_, NO_HEAPNUMBER_RESULTS, mode_); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2152 | } else { |
| 2153 | // Allow heap number result and don't make a transition if a heap number |
| 2154 | // cannot be allocated. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2155 | BinaryOpStub_GenerateSmiCode( |
| 2156 | masm, &call_runtime, &call_runtime, op_, ALLOW_HEAPNUMBER_RESULTS, |
| 2157 | mode_); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2158 | } |
| 2159 | |
| 2160 | // Code falls through if the result is not returned as either a smi or heap |
| 2161 | // number. |
| 2162 | GenerateTypeTransition(masm); |
| 2163 | |
| 2164 | __ bind(&call_runtime); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2165 | GenerateRegisterArgsPush(masm); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2166 | GenerateCallRuntime(masm); |
| 2167 | } |
| 2168 | |
| 2169 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2170 | void BinaryOpStub::GenerateBothStringStub(MacroAssembler* masm) { |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2171 | Label call_runtime; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2172 | ASSERT(left_type_ == BinaryOpIC::STRING && right_type_ == BinaryOpIC::STRING); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2173 | ASSERT(op_ == Token::ADD); |
| 2174 | // If both arguments are strings, call the string add stub. |
| 2175 | // Otherwise, do a transition. |
| 2176 | |
| 2177 | // Registers containing left and right operands respectively. |
| 2178 | Register left = r1; |
| 2179 | Register right = r0; |
| 2180 | |
| 2181 | // Test if left operand is a string. |
| 2182 | __ JumpIfSmi(left, &call_runtime); |
| 2183 | __ CompareObjectType(left, r2, r2, FIRST_NONSTRING_TYPE); |
| 2184 | __ b(ge, &call_runtime); |
| 2185 | |
| 2186 | // Test if right operand is a string. |
| 2187 | __ JumpIfSmi(right, &call_runtime); |
| 2188 | __ CompareObjectType(right, r2, r2, FIRST_NONSTRING_TYPE); |
| 2189 | __ b(ge, &call_runtime); |
| 2190 | |
| 2191 | StringAddStub string_add_stub(NO_STRING_CHECK_IN_STUB); |
| 2192 | GenerateRegisterArgsPush(masm); |
| 2193 | __ TailCallStub(&string_add_stub); |
| 2194 | |
| 2195 | __ bind(&call_runtime); |
| 2196 | GenerateTypeTransition(masm); |
| 2197 | } |
| 2198 | |
| 2199 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2200 | void BinaryOpStub::GenerateInt32Stub(MacroAssembler* masm) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2201 | ASSERT(Max(left_type_, right_type_) == BinaryOpIC::INT32); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2202 | |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2203 | Register left = r1; |
| 2204 | Register right = r0; |
| 2205 | Register scratch1 = r7; |
| 2206 | Register scratch2 = r9; |
| 2207 | DwVfpRegister double_scratch = d0; |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2208 | |
| 2209 | Register heap_number_result = no_reg; |
| 2210 | Register heap_number_map = r6; |
| 2211 | __ LoadRoot(heap_number_map, Heap::kHeapNumberMapRootIndex); |
| 2212 | |
| 2213 | Label call_runtime; |
| 2214 | // Labels for type transition, used for wrong input or output types. |
| 2215 | // Both label are currently actually bound to the same position. We use two |
| 2216 | // different label to differentiate the cause leading to type transition. |
| 2217 | Label transition; |
| 2218 | |
| 2219 | // Smi-smi fast case. |
| 2220 | Label skip; |
| 2221 | __ orr(scratch1, left, right); |
| 2222 | __ JumpIfNotSmi(scratch1, &skip); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2223 | BinaryOpStub_GenerateSmiSmiOperation(masm, op_); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2224 | // Fall through if the result is not a smi. |
| 2225 | __ bind(&skip); |
| 2226 | |
| 2227 | switch (op_) { |
| 2228 | case Token::ADD: |
| 2229 | case Token::SUB: |
| 2230 | case Token::MUL: |
| 2231 | case Token::DIV: |
| 2232 | case Token::MOD: { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2233 | // It could be that only SMIs have been seen at either the left |
| 2234 | // or the right operand. For precise type feedback, patch the IC |
| 2235 | // again if this changes. |
| 2236 | if (left_type_ == BinaryOpIC::SMI) { |
| 2237 | __ JumpIfNotSmi(left, &transition); |
| 2238 | } |
| 2239 | if (right_type_ == BinaryOpIC::SMI) { |
| 2240 | __ JumpIfNotSmi(right, &transition); |
| 2241 | } |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 2242 | // Load both operands and check that they are 32-bit integer. |
| 2243 | // Jump to type transition if they are not. The registers r0 and r1 (right |
| 2244 | // and left) are preserved for the runtime call. |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2245 | __ LoadNumberAsInt32Double( |
| 2246 | right, d1, heap_number_map, scratch1, d8, &transition); |
| 2247 | __ LoadNumberAsInt32Double( |
| 2248 | left, d0, heap_number_map, scratch1, d8, &transition); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2249 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2250 | if (op_ != Token::MOD) { |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2251 | Label return_heap_number; |
| 2252 | switch (op_) { |
| 2253 | case Token::ADD: |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2254 | __ vadd(d5, d0, d1); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2255 | break; |
| 2256 | case Token::SUB: |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2257 | __ vsub(d5, d0, d1); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2258 | break; |
| 2259 | case Token::MUL: |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2260 | __ vmul(d5, d0, d1); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2261 | break; |
| 2262 | case Token::DIV: |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2263 | __ vdiv(d5, d0, d1); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2264 | break; |
| 2265 | default: |
| 2266 | UNREACHABLE(); |
| 2267 | } |
| 2268 | |
| 2269 | if (op_ != Token::DIV) { |
| 2270 | // These operations produce an integer result. |
| 2271 | // Try to return a smi if we can. |
| 2272 | // Otherwise return a heap number if allowed, or jump to type |
| 2273 | // transition. |
| 2274 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2275 | if (result_type_ <= BinaryOpIC::INT32) { |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 2276 | __ TryDoubleToInt32Exact(scratch1, d5, d8); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2277 | // If the ne condition is set, result does |
| 2278 | // not fit in a 32-bit integer. |
| 2279 | __ b(ne, &transition); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 2280 | } else { |
| 2281 | __ vcvt_s32_f64(s8, d5); |
| 2282 | __ vmov(scratch1, s8); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2283 | } |
| 2284 | |
| 2285 | // Check if the result fits in a smi. |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2286 | __ add(scratch2, scratch1, Operand(0x40000000), SetCC); |
| 2287 | // If not try to return a heap number. |
| 2288 | __ b(mi, &return_heap_number); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2289 | // Check for minus zero. Return heap number for minus zero if |
| 2290 | // double results are allowed; otherwise transition. |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2291 | Label not_zero; |
ricow@chromium.org | ddd545c | 2011-08-24 12:02:41 +0000 | [diff] [blame] | 2292 | __ cmp(scratch1, Operand::Zero()); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2293 | __ b(ne, ¬_zero); |
| 2294 | __ vmov(scratch2, d5.high()); |
| 2295 | __ tst(scratch2, Operand(HeapNumber::kSignMask)); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2296 | __ b(ne, result_type_ <= BinaryOpIC::INT32 ? &transition |
| 2297 | : &return_heap_number); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2298 | __ bind(¬_zero); |
| 2299 | |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2300 | // Tag the result and return. |
| 2301 | __ SmiTag(r0, scratch1); |
| 2302 | __ Ret(); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2303 | } else { |
| 2304 | // DIV just falls through to allocating a heap number. |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2305 | } |
| 2306 | |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 2307 | __ bind(&return_heap_number); |
| 2308 | // Return a heap number, or fall through to type transition or runtime |
| 2309 | // call if we can't. |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2310 | // We are using vfp registers so r5 is available. |
| 2311 | heap_number_result = r5; |
| 2312 | BinaryOpStub_GenerateHeapResultAllocation(masm, |
| 2313 | heap_number_result, |
| 2314 | heap_number_map, |
| 2315 | scratch1, |
| 2316 | scratch2, |
| 2317 | &call_runtime, |
| 2318 | mode_); |
| 2319 | __ sub(r0, heap_number_result, Operand(kHeapObjectTag)); |
| 2320 | __ vstr(d5, r0, HeapNumber::kValueOffset); |
| 2321 | __ mov(r0, heap_number_result); |
| 2322 | __ Ret(); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2323 | |
| 2324 | // A DIV operation expecting an integer result falls through |
| 2325 | // to type transition. |
| 2326 | |
| 2327 | } else { |
| 2328 | // We preserved r0 and r1 to be able to call runtime. |
| 2329 | // Save the left value on the stack. |
| 2330 | __ Push(r5, r4); |
| 2331 | |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 2332 | Label pop_and_call_runtime; |
| 2333 | |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2334 | // Allocate a heap number to store the result. |
| 2335 | heap_number_result = r5; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2336 | BinaryOpStub_GenerateHeapResultAllocation(masm, |
| 2337 | heap_number_result, |
| 2338 | heap_number_map, |
| 2339 | scratch1, |
| 2340 | scratch2, |
| 2341 | &pop_and_call_runtime, |
| 2342 | mode_); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2343 | |
| 2344 | // Load the left value from the value saved on the stack. |
| 2345 | __ Pop(r1, r0); |
| 2346 | |
| 2347 | // Call the C function to handle the double operation. |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2348 | CallCCodeForDoubleOperation(masm, op_, heap_number_result, scratch1); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2349 | if (FLAG_debug_code) { |
| 2350 | __ stop("Unreachable code."); |
| 2351 | } |
erik.corry@gmail.com | 3847bd5 | 2011-04-27 10:38:56 +0000 | [diff] [blame] | 2352 | |
| 2353 | __ bind(&pop_and_call_runtime); |
| 2354 | __ Drop(2); |
| 2355 | __ b(&call_runtime); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2356 | } |
| 2357 | |
| 2358 | break; |
| 2359 | } |
| 2360 | |
| 2361 | case Token::BIT_OR: |
| 2362 | case Token::BIT_XOR: |
| 2363 | case Token::BIT_AND: |
| 2364 | case Token::SAR: |
| 2365 | case Token::SHR: |
| 2366 | case Token::SHL: { |
| 2367 | Label return_heap_number; |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2368 | // Convert operands to 32-bit integers. Right in r2 and left in r3. The |
| 2369 | // registers r0 and r1 (right and left) are preserved for the runtime |
| 2370 | // call. |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 2371 | __ LoadNumberAsInt32(left, r3, heap_number_map, |
| 2372 | scratch1, d0, d1, &transition); |
| 2373 | __ LoadNumberAsInt32(right, r2, heap_number_map, |
| 2374 | scratch1, d0, d1, &transition); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2375 | |
| 2376 | // The ECMA-262 standard specifies that, for shift operations, only the |
| 2377 | // 5 least significant bits of the shift value should be used. |
| 2378 | switch (op_) { |
| 2379 | case Token::BIT_OR: |
| 2380 | __ orr(r2, r3, Operand(r2)); |
| 2381 | break; |
| 2382 | case Token::BIT_XOR: |
| 2383 | __ eor(r2, r3, Operand(r2)); |
| 2384 | break; |
| 2385 | case Token::BIT_AND: |
| 2386 | __ and_(r2, r3, Operand(r2)); |
| 2387 | break; |
| 2388 | case Token::SAR: |
| 2389 | __ and_(r2, r2, Operand(0x1f)); |
| 2390 | __ mov(r2, Operand(r3, ASR, r2)); |
| 2391 | break; |
| 2392 | case Token::SHR: |
| 2393 | __ and_(r2, r2, Operand(0x1f)); |
| 2394 | __ mov(r2, Operand(r3, LSR, r2), SetCC); |
| 2395 | // SHR is special because it is required to produce a positive answer. |
| 2396 | // We only get a negative result if the shift value (r2) is 0. |
| 2397 | // This result cannot be respresented as a signed 32-bit integer, try |
| 2398 | // to return a heap number if we can. |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2399 | __ b(mi, (result_type_ <= BinaryOpIC::INT32) |
| 2400 | ? &transition |
| 2401 | : &return_heap_number); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2402 | break; |
| 2403 | case Token::SHL: |
| 2404 | __ and_(r2, r2, Operand(0x1f)); |
| 2405 | __ mov(r2, Operand(r3, LSL, r2)); |
| 2406 | break; |
| 2407 | default: |
| 2408 | UNREACHABLE(); |
| 2409 | } |
| 2410 | |
| 2411 | // Check if the result fits in a smi. |
| 2412 | __ add(scratch1, r2, Operand(0x40000000), SetCC); |
| 2413 | // If not try to return a heap number. (We know the result is an int32.) |
| 2414 | __ b(mi, &return_heap_number); |
| 2415 | // Tag the result and return. |
| 2416 | __ SmiTag(r0, r2); |
| 2417 | __ Ret(); |
| 2418 | |
| 2419 | __ bind(&return_heap_number); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2420 | heap_number_result = r5; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2421 | BinaryOpStub_GenerateHeapResultAllocation(masm, |
| 2422 | heap_number_result, |
| 2423 | heap_number_map, |
| 2424 | scratch1, |
| 2425 | scratch2, |
| 2426 | &call_runtime, |
| 2427 | mode_); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 2428 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2429 | if (op_ != Token::SHR) { |
| 2430 | // Convert the result to a floating point value. |
| 2431 | __ vmov(double_scratch.low(), r2); |
| 2432 | __ vcvt_f64_s32(double_scratch, double_scratch.low()); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2433 | } else { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2434 | // The result must be interpreted as an unsigned 32-bit integer. |
| 2435 | __ vmov(double_scratch.low(), r2); |
| 2436 | __ vcvt_f64_u32(double_scratch, double_scratch.low()); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2437 | } |
| 2438 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2439 | // Store the result. |
| 2440 | __ sub(r0, heap_number_result, Operand(kHeapObjectTag)); |
| 2441 | __ vstr(double_scratch, r0, HeapNumber::kValueOffset); |
| 2442 | __ mov(r0, heap_number_result); |
| 2443 | __ Ret(); |
| 2444 | |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2445 | break; |
| 2446 | } |
| 2447 | |
| 2448 | default: |
| 2449 | UNREACHABLE(); |
| 2450 | } |
| 2451 | |
erik.corry@gmail.com | d6076d9 | 2011-06-06 09:39:18 +0000 | [diff] [blame] | 2452 | // We never expect DIV to yield an integer result, so we always generate |
| 2453 | // type transition code for DIV operations expecting an integer result: the |
| 2454 | // code will fall through to this type transition. |
| 2455 | if (transition.is_linked() || |
| 2456 | ((op_ == Token::DIV) && (result_type_ <= BinaryOpIC::INT32))) { |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2457 | __ bind(&transition); |
| 2458 | GenerateTypeTransition(masm); |
| 2459 | } |
| 2460 | |
| 2461 | __ bind(&call_runtime); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2462 | GenerateRegisterArgsPush(masm); |
ager@chromium.org | 9ee27ae | 2011-03-02 13:43:26 +0000 | [diff] [blame] | 2463 | GenerateCallRuntime(masm); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2464 | } |
| 2465 | |
| 2466 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2467 | void BinaryOpStub::GenerateOddballStub(MacroAssembler* masm) { |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2468 | Label call_runtime; |
| 2469 | |
| 2470 | if (op_ == Token::ADD) { |
| 2471 | // Handle string addition here, because it is the only operation |
| 2472 | // that does not do a ToNumber conversion on the operands. |
| 2473 | GenerateAddStrings(masm); |
| 2474 | } |
| 2475 | |
| 2476 | // Convert oddball arguments to numbers. |
| 2477 | Label check, done; |
| 2478 | __ CompareRoot(r1, Heap::kUndefinedValueRootIndex); |
| 2479 | __ b(ne, &check); |
| 2480 | if (Token::IsBitOp(op_)) { |
| 2481 | __ mov(r1, Operand(Smi::FromInt(0))); |
| 2482 | } else { |
| 2483 | __ LoadRoot(r1, Heap::kNanValueRootIndex); |
| 2484 | } |
| 2485 | __ jmp(&done); |
| 2486 | __ bind(&check); |
| 2487 | __ CompareRoot(r0, Heap::kUndefinedValueRootIndex); |
| 2488 | __ b(ne, &done); |
| 2489 | if (Token::IsBitOp(op_)) { |
| 2490 | __ mov(r0, Operand(Smi::FromInt(0))); |
| 2491 | } else { |
| 2492 | __ LoadRoot(r0, Heap::kNanValueRootIndex); |
| 2493 | } |
| 2494 | __ bind(&done); |
| 2495 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2496 | GenerateNumberStub(masm); |
lrn@chromium.org | 7516f05 | 2011-03-30 08:52:27 +0000 | [diff] [blame] | 2497 | } |
| 2498 | |
| 2499 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 2500 | void BinaryOpStub::GenerateNumberStub(MacroAssembler* masm) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2501 | Label call_runtime, transition; |
| 2502 | BinaryOpStub_GenerateFPOperation( |
| 2503 | masm, left_type_, right_type_, false, |
| 2504 | &transition, &call_runtime, &transition, op_, mode_); |
| 2505 | |
| 2506 | __ bind(&transition); |
| 2507 | GenerateTypeTransition(masm); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2508 | |
| 2509 | __ bind(&call_runtime); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2510 | GenerateRegisterArgsPush(masm); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2511 | GenerateCallRuntime(masm); |
| 2512 | } |
| 2513 | |
| 2514 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2515 | void BinaryOpStub::GenerateGeneric(MacroAssembler* masm) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2516 | Label call_runtime, call_string_add_or_runtime, transition; |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2517 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2518 | BinaryOpStub_GenerateSmiCode( |
| 2519 | masm, &call_runtime, &call_runtime, op_, ALLOW_HEAPNUMBER_RESULTS, mode_); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2520 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2521 | BinaryOpStub_GenerateFPOperation( |
| 2522 | masm, left_type_, right_type_, false, |
| 2523 | &call_string_add_or_runtime, &call_runtime, &transition, op_, mode_); |
| 2524 | |
| 2525 | __ bind(&transition); |
| 2526 | GenerateTypeTransition(masm); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2527 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2528 | __ bind(&call_string_add_or_runtime); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2529 | if (op_ == Token::ADD) { |
| 2530 | GenerateAddStrings(masm); |
| 2531 | } |
| 2532 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2533 | __ bind(&call_runtime); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2534 | GenerateRegisterArgsPush(masm); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2535 | GenerateCallRuntime(masm); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2536 | } |
| 2537 | |
| 2538 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2539 | void BinaryOpStub::GenerateAddStrings(MacroAssembler* masm) { |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2540 | ASSERT(op_ == Token::ADD); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2541 | Label left_not_string, call_runtime; |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2542 | |
| 2543 | Register left = r1; |
| 2544 | Register right = r0; |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2545 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2546 | // Check if left argument is a string. |
| 2547 | __ JumpIfSmi(left, &left_not_string); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2548 | __ CompareObjectType(left, r2, r2, FIRST_NONSTRING_TYPE); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2549 | __ b(ge, &left_not_string); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2550 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2551 | StringAddStub string_add_left_stub(NO_STRING_CHECK_LEFT_IN_STUB); |
| 2552 | GenerateRegisterArgsPush(masm); |
| 2553 | __ TailCallStub(&string_add_left_stub); |
| 2554 | |
| 2555 | // Left operand is not a string, test right. |
| 2556 | __ bind(&left_not_string); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2557 | __ JumpIfSmi(right, &call_runtime); |
| 2558 | __ CompareObjectType(right, r2, r2, FIRST_NONSTRING_TYPE); |
| 2559 | __ b(ge, &call_runtime); |
| 2560 | |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2561 | StringAddStub string_add_right_stub(NO_STRING_CHECK_RIGHT_IN_STUB); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2562 | GenerateRegisterArgsPush(masm); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 2563 | __ TailCallStub(&string_add_right_stub); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2564 | |
| 2565 | // At least one argument is not a string. |
| 2566 | __ bind(&call_runtime); |
| 2567 | } |
| 2568 | |
| 2569 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2570 | void BinaryOpStub_GenerateHeapResultAllocation(MacroAssembler* masm, |
| 2571 | Register result, |
| 2572 | Register heap_number_map, |
| 2573 | Register scratch1, |
| 2574 | Register scratch2, |
| 2575 | Label* gc_required, |
| 2576 | OverwriteMode mode) { |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2577 | // Code below will scratch result if allocation fails. To keep both arguments |
| 2578 | // intact for the runtime call result cannot be one of these. |
| 2579 | ASSERT(!result.is(r0) && !result.is(r1)); |
| 2580 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2581 | if (mode == OVERWRITE_LEFT || mode == OVERWRITE_RIGHT) { |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2582 | Label skip_allocation, allocated; |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2583 | Register overwritable_operand = mode == OVERWRITE_LEFT ? r1 : r0; |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2584 | // If the overwritable operand is already an object, we skip the |
| 2585 | // allocation of a heap number. |
| 2586 | __ JumpIfNotSmi(overwritable_operand, &skip_allocation); |
| 2587 | // Allocate a heap number for the result. |
| 2588 | __ AllocateHeapNumber( |
| 2589 | result, scratch1, scratch2, heap_number_map, gc_required); |
| 2590 | __ b(&allocated); |
| 2591 | __ bind(&skip_allocation); |
| 2592 | // Use object holding the overwritable operand for result. |
| 2593 | __ mov(result, Operand(overwritable_operand)); |
| 2594 | __ bind(&allocated); |
| 2595 | } else { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 2596 | ASSERT(mode == NO_OVERWRITE); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2597 | __ AllocateHeapNumber( |
| 2598 | result, scratch1, scratch2, heap_number_map, gc_required); |
| 2599 | } |
| 2600 | } |
| 2601 | |
| 2602 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 2603 | void BinaryOpStub::GenerateRegisterArgsPush(MacroAssembler* masm) { |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 2604 | __ Push(r1, r0); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2605 | } |
| 2606 | |
| 2607 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 2608 | void TranscendentalCacheStub::Generate(MacroAssembler* masm) { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2609 | // Untagged case: double input in d2, double result goes |
| 2610 | // into d2. |
| 2611 | // Tagged case: tagged input on top of stack and in r0, |
| 2612 | // tagged result (heap number) goes into r0. |
| 2613 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 2614 | Label input_not_smi; |
| 2615 | Label loaded; |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2616 | Label calculate; |
| 2617 | Label invalid_cache; |
| 2618 | const Register scratch0 = r9; |
| 2619 | const Register scratch1 = r7; |
| 2620 | const Register cache_entry = r0; |
| 2621 | const bool tagged = (argument_type_ == TAGGED); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 2622 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2623 | if (tagged) { |
| 2624 | // Argument is a number and is on stack and in r0. |
| 2625 | // Load argument and check if it is a smi. |
| 2626 | __ JumpIfNotSmi(r0, &input_not_smi); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 2627 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2628 | // Input is a smi. Convert to double and load the low and high words |
| 2629 | // of the double into r2, r3. |
| 2630 | __ IntegerToDoubleConversionWithVFP3(r0, r3, r2); |
| 2631 | __ b(&loaded); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 2632 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2633 | __ bind(&input_not_smi); |
| 2634 | // Check if input is a HeapNumber. |
| 2635 | __ CheckMap(r0, |
| 2636 | r1, |
| 2637 | Heap::kHeapNumberMapRootIndex, |
| 2638 | &calculate, |
| 2639 | DONT_DO_SMI_CHECK); |
| 2640 | // Input is a HeapNumber. Load it to a double register and store the |
| 2641 | // low and high words into r2, r3. |
| 2642 | __ vldr(d0, FieldMemOperand(r0, HeapNumber::kValueOffset)); |
| 2643 | __ vmov(r2, r3, d0); |
| 2644 | } else { |
| 2645 | // Input is untagged double in d2. Output goes to d2. |
| 2646 | __ vmov(r2, r3, d2); |
| 2647 | } |
| 2648 | __ bind(&loaded); |
| 2649 | // r2 = low 32 bits of double value |
| 2650 | // r3 = high 32 bits of double value |
| 2651 | // Compute hash (the shifts are arithmetic): |
| 2652 | // h = (low ^ high); h ^= h >> 16; h ^= h >> 8; h = h & (cacheSize - 1); |
| 2653 | __ eor(r1, r2, Operand(r3)); |
| 2654 | __ eor(r1, r1, Operand(r1, ASR, 16)); |
| 2655 | __ eor(r1, r1, Operand(r1, ASR, 8)); |
| 2656 | ASSERT(IsPowerOf2(TranscendentalCache::SubCache::kCacheSize)); |
| 2657 | __ And(r1, r1, Operand(TranscendentalCache::SubCache::kCacheSize - 1)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 2658 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2659 | // r2 = low 32 bits of double value. |
| 2660 | // r3 = high 32 bits of double value. |
| 2661 | // r1 = TranscendentalCache::hash(double value). |
| 2662 | Isolate* isolate = masm->isolate(); |
| 2663 | ExternalReference cache_array = |
| 2664 | ExternalReference::transcendental_cache_array_address(isolate); |
| 2665 | __ mov(cache_entry, Operand(cache_array)); |
| 2666 | // cache_entry points to cache array. |
| 2667 | int cache_array_index |
| 2668 | = type_ * sizeof(isolate->transcendental_cache()->caches_[0]); |
| 2669 | __ ldr(cache_entry, MemOperand(cache_entry, cache_array_index)); |
| 2670 | // r0 points to the cache for the type type_. |
| 2671 | // If NULL, the cache hasn't been initialized yet, so go through runtime. |
| 2672 | __ cmp(cache_entry, Operand::Zero()); |
| 2673 | __ b(eq, &invalid_cache); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 2674 | |
| 2675 | #ifdef DEBUG |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2676 | // Check that the layout of cache elements match expectations. |
| 2677 | { TranscendentalCache::SubCache::Element test_elem[2]; |
| 2678 | char* elem_start = reinterpret_cast<char*>(&test_elem[0]); |
| 2679 | char* elem2_start = reinterpret_cast<char*>(&test_elem[1]); |
| 2680 | char* elem_in0 = reinterpret_cast<char*>(&(test_elem[0].in[0])); |
| 2681 | char* elem_in1 = reinterpret_cast<char*>(&(test_elem[0].in[1])); |
| 2682 | char* elem_out = reinterpret_cast<char*>(&(test_elem[0].output)); |
| 2683 | CHECK_EQ(12, elem2_start - elem_start); // Two uint_32's and a pointer. |
| 2684 | CHECK_EQ(0, elem_in0 - elem_start); |
| 2685 | CHECK_EQ(kIntSize, elem_in1 - elem_start); |
| 2686 | CHECK_EQ(2 * kIntSize, elem_out - elem_start); |
| 2687 | } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 2688 | #endif |
| 2689 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 2690 | // Find the address of the r1'st entry in the cache, i.e., &r0[r1*12]. |
| 2691 | __ add(r1, r1, Operand(r1, LSL, 1)); |
| 2692 | __ add(cache_entry, cache_entry, Operand(r1, LSL, 2)); |
| 2693 | // Check if cache matches: Double value is stored in uint32_t[2] array. |
| 2694 | __ ldm(ia, cache_entry, r4.bit() | r5.bit() | r6.bit()); |
| 2695 | __ cmp(r2, r4); |
| 2696 | __ cmp(r3, r5, eq); |
| 2697 | __ b(ne, &calculate); |
| 2698 | // Cache hit. Load result, cleanup and return. |
| 2699 | Counters* counters = masm->isolate()->counters(); |
| 2700 | __ IncrementCounter( |
| 2701 | counters->transcendental_cache_hit(), 1, scratch0, scratch1); |
| 2702 | if (tagged) { |
| 2703 | // Pop input value from stack and load result into r0. |
| 2704 | __ pop(); |
| 2705 | __ mov(r0, Operand(r6)); |
| 2706 | } else { |
| 2707 | // Load result into d2. |
| 2708 | __ vldr(d2, FieldMemOperand(r6, HeapNumber::kValueOffset)); |
| 2709 | } |
| 2710 | __ Ret(); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2711 | |
| 2712 | __ bind(&calculate); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 2713 | __ IncrementCounter( |
| 2714 | counters->transcendental_cache_miss(), 1, scratch0, scratch1); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2715 | if (tagged) { |
| 2716 | __ bind(&invalid_cache); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2717 | ExternalReference runtime_function = |
| 2718 | ExternalReference(RuntimeFunction(), masm->isolate()); |
| 2719 | __ TailCallExternalReference(runtime_function, 1, 1); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2720 | } else { |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2721 | Label no_update; |
| 2722 | Label skip_cache; |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2723 | |
| 2724 | // Call C function to calculate the result and update the cache. |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 2725 | // r0: precalculated cache entry address. |
| 2726 | // r2 and r3: parts of the double value. |
| 2727 | // Store r0, r2 and r3 on stack for later before calling C function. |
| 2728 | __ Push(r3, r2, cache_entry); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2729 | GenerateCallCFunction(masm, scratch0); |
| 2730 | __ GetCFunctionDoubleResult(d2); |
| 2731 | |
| 2732 | // Try to update the cache. If we cannot allocate a |
| 2733 | // heap number, we return the result without updating. |
jkummerow@chromium.org | 28583c9 | 2012-07-16 11:31:55 +0000 | [diff] [blame] | 2734 | __ Pop(r3, r2, cache_entry); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2735 | __ LoadRoot(r5, Heap::kHeapNumberMapRootIndex); |
| 2736 | __ AllocateHeapNumber(r6, scratch0, scratch1, r5, &no_update); |
| 2737 | __ vstr(d2, FieldMemOperand(r6, HeapNumber::kValueOffset)); |
| 2738 | __ stm(ia, cache_entry, r2.bit() | r3.bit() | r6.bit()); |
| 2739 | __ Ret(); |
| 2740 | |
| 2741 | __ bind(&invalid_cache); |
| 2742 | // The cache is invalid. Call runtime which will recreate the |
| 2743 | // cache. |
| 2744 | __ LoadRoot(r5, Heap::kHeapNumberMapRootIndex); |
| 2745 | __ AllocateHeapNumber(r0, scratch0, scratch1, r5, &skip_cache); |
| 2746 | __ vstr(d2, FieldMemOperand(r0, HeapNumber::kValueOffset)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2747 | { |
| 2748 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 2749 | __ push(r0); |
| 2750 | __ CallRuntime(RuntimeFunction(), 1); |
| 2751 | } |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2752 | __ vldr(d2, FieldMemOperand(r0, HeapNumber::kValueOffset)); |
| 2753 | __ Ret(); |
| 2754 | |
| 2755 | __ bind(&skip_cache); |
| 2756 | // Call C function to calculate the result and answer directly |
| 2757 | // without updating the cache. |
| 2758 | GenerateCallCFunction(masm, scratch0); |
| 2759 | __ GetCFunctionDoubleResult(d2); |
| 2760 | __ bind(&no_update); |
| 2761 | |
| 2762 | // We return the value in d2 without adding it to the cache, but |
| 2763 | // we cause a scavenging GC so that future allocations will succeed. |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2764 | { |
| 2765 | FrameScope scope(masm, StackFrame::INTERNAL); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2766 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2767 | // Allocate an aligned object larger than a HeapNumber. |
| 2768 | ASSERT(4 * kPointerSize >= HeapNumber::kSize); |
| 2769 | __ mov(scratch0, Operand(4 * kPointerSize)); |
| 2770 | __ push(scratch0); |
| 2771 | __ CallRuntimeSaveDoubles(Runtime::kAllocateInNewSpace); |
| 2772 | } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 2773 | __ Ret(); |
| 2774 | } |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2775 | } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 2776 | |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2777 | |
| 2778 | void TranscendentalCacheStub::GenerateCallCFunction(MacroAssembler* masm, |
| 2779 | Register scratch) { |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 2780 | Isolate* isolate = masm->isolate(); |
| 2781 | |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2782 | __ push(lr); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2783 | __ PrepareCallCFunction(0, 1, scratch); |
| 2784 | if (masm->use_eabi_hardfloat()) { |
| 2785 | __ vmov(d0, d2); |
| 2786 | } else { |
| 2787 | __ vmov(r0, r1, d2); |
| 2788 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2789 | AllowExternalCallThatCantCauseGC scope(masm); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2790 | switch (type_) { |
| 2791 | case TranscendentalCache::SIN: |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2792 | __ CallCFunction(ExternalReference::math_sin_double_function(isolate), |
| 2793 | 0, 1); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2794 | break; |
| 2795 | case TranscendentalCache::COS: |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2796 | __ CallCFunction(ExternalReference::math_cos_double_function(isolate), |
| 2797 | 0, 1); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2798 | break; |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 2799 | case TranscendentalCache::TAN: |
| 2800 | __ CallCFunction(ExternalReference::math_tan_double_function(isolate), |
| 2801 | 0, 1); |
| 2802 | break; |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2803 | case TranscendentalCache::LOG: |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 2804 | __ CallCFunction(ExternalReference::math_log_double_function(isolate), |
| 2805 | 0, 1); |
karlklose@chromium.org | 8f806e8 | 2011-03-07 14:06:08 +0000 | [diff] [blame] | 2806 | break; |
| 2807 | default: |
| 2808 | UNIMPLEMENTED(); |
| 2809 | break; |
| 2810 | } |
| 2811 | __ pop(lr); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 2812 | } |
| 2813 | |
| 2814 | |
| 2815 | Runtime::FunctionId TranscendentalCacheStub::RuntimeFunction() { |
| 2816 | switch (type_) { |
| 2817 | // Add more cases when necessary. |
| 2818 | case TranscendentalCache::SIN: return Runtime::kMath_sin; |
| 2819 | case TranscendentalCache::COS: return Runtime::kMath_cos; |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 2820 | case TranscendentalCache::TAN: return Runtime::kMath_tan; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 2821 | case TranscendentalCache::LOG: return Runtime::kMath_log; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 2822 | default: |
| 2823 | UNIMPLEMENTED(); |
| 2824 | return Runtime::kAbort; |
| 2825 | } |
| 2826 | } |
| 2827 | |
| 2828 | |
| 2829 | void StackCheckStub::Generate(MacroAssembler* masm) { |
whesse@chromium.org | 4a5224e | 2010-10-20 12:37:07 +0000 | [diff] [blame] | 2830 | __ TailCallRuntime(Runtime::kStackGuard, 0, 1); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 2831 | } |
| 2832 | |
| 2833 | |
yangguo@chromium.org | 5645471 | 2012-02-16 15:33:53 +0000 | [diff] [blame] | 2834 | void InterruptStub::Generate(MacroAssembler* masm) { |
| 2835 | __ TailCallRuntime(Runtime::kInterrupt, 0, 1); |
| 2836 | } |
| 2837 | |
| 2838 | |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2839 | void MathPowStub::Generate(MacroAssembler* masm) { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2840 | const Register base = r1; |
| 2841 | const Register exponent = r2; |
| 2842 | const Register heapnumbermap = r5; |
| 2843 | const Register heapnumber = r0; |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 2844 | const DwVfpRegister double_base = d1; |
| 2845 | const DwVfpRegister double_exponent = d2; |
| 2846 | const DwVfpRegister double_result = d3; |
| 2847 | const DwVfpRegister double_scratch = d0; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2848 | const SwVfpRegister single_scratch = s0; |
| 2849 | const Register scratch = r9; |
| 2850 | const Register scratch2 = r7; |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2851 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 2852 | Label call_runtime, done, int_exponent; |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2853 | if (exponent_type_ == ON_STACK) { |
| 2854 | Label base_is_smi, unpack_exponent; |
| 2855 | // The exponent and base are supplied as arguments on the stack. |
| 2856 | // This can only happen if the stub is called from non-optimized code. |
| 2857 | // Load input parameters from stack to double registers. |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2858 | __ ldr(base, MemOperand(sp, 1 * kPointerSize)); |
| 2859 | __ ldr(exponent, MemOperand(sp, 0 * kPointerSize)); |
| 2860 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2861 | __ LoadRoot(heapnumbermap, Heap::kHeapNumberMapRootIndex); |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2862 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 2863 | __ UntagAndJumpIfSmi(scratch, base, &base_is_smi); |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2864 | __ ldr(scratch, FieldMemOperand(base, JSObject::kMapOffset)); |
| 2865 | __ cmp(scratch, heapnumbermap); |
| 2866 | __ b(ne, &call_runtime); |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2867 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2868 | __ vldr(double_base, FieldMemOperand(base, HeapNumber::kValueOffset)); |
| 2869 | __ jmp(&unpack_exponent); |
| 2870 | |
| 2871 | __ bind(&base_is_smi); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 2872 | __ vmov(single_scratch, scratch); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2873 | __ vcvt_f64_s32(double_base, single_scratch); |
| 2874 | __ bind(&unpack_exponent); |
| 2875 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 2876 | __ UntagAndJumpIfSmi(scratch, exponent, &int_exponent); |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2877 | |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2878 | __ ldr(scratch, FieldMemOperand(exponent, JSObject::kMapOffset)); |
| 2879 | __ cmp(scratch, heapnumbermap); |
| 2880 | __ b(ne, &call_runtime); |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2881 | __ vldr(double_exponent, |
| 2882 | FieldMemOperand(exponent, HeapNumber::kValueOffset)); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2883 | } else if (exponent_type_ == TAGGED) { |
| 2884 | // Base is already in double_base. |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 2885 | __ UntagAndJumpIfSmi(scratch, exponent, &int_exponent); |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2886 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2887 | __ vldr(double_exponent, |
| 2888 | FieldMemOperand(exponent, HeapNumber::kValueOffset)); |
| 2889 | } |
| 2890 | |
| 2891 | if (exponent_type_ != INTEGER) { |
| 2892 | Label int_exponent_convert; |
| 2893 | // Detect integer exponents stored as double. |
| 2894 | __ vcvt_u32_f64(single_scratch, double_exponent); |
| 2895 | // We do not check for NaN or Infinity here because comparing numbers on |
| 2896 | // ARM correctly distinguishes NaNs. We end up calling the built-in. |
| 2897 | __ vcvt_f64_u32(double_scratch, single_scratch); |
| 2898 | __ VFPCompareAndSetFlags(double_scratch, double_exponent); |
| 2899 | __ b(eq, &int_exponent_convert); |
| 2900 | |
| 2901 | if (exponent_type_ == ON_STACK) { |
| 2902 | // Detect square root case. Crankshaft detects constant +/-0.5 at |
| 2903 | // compile time and uses DoMathPowHalf instead. We then skip this check |
| 2904 | // for non-constant cases of +/-0.5 as these hardly occur. |
| 2905 | Label not_plus_half; |
| 2906 | |
| 2907 | // Test for 0.5. |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 2908 | __ vmov(double_scratch, 0.5, scratch); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2909 | __ VFPCompareAndSetFlags(double_exponent, double_scratch); |
| 2910 | __ b(ne, ¬_plus_half); |
| 2911 | |
| 2912 | // Calculates square root of base. Check for the special case of |
| 2913 | // Math.pow(-Infinity, 0.5) == Infinity (ECMA spec, 15.8.2.13). |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 2914 | __ vmov(double_scratch, -V8_INFINITY, scratch); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2915 | __ VFPCompareAndSetFlags(double_base, double_scratch); |
| 2916 | __ vneg(double_result, double_scratch, eq); |
| 2917 | __ b(eq, &done); |
| 2918 | |
| 2919 | // Add +0 to convert -0 to +0. |
| 2920 | __ vadd(double_scratch, double_base, kDoubleRegZero); |
| 2921 | __ vsqrt(double_result, double_scratch); |
| 2922 | __ jmp(&done); |
| 2923 | |
| 2924 | __ bind(¬_plus_half); |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 2925 | __ vmov(double_scratch, -0.5, scratch); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2926 | __ VFPCompareAndSetFlags(double_exponent, double_scratch); |
| 2927 | __ b(ne, &call_runtime); |
| 2928 | |
| 2929 | // Calculates square root of base. Check for the special case of |
| 2930 | // Math.pow(-Infinity, -0.5) == 0 (ECMA spec, 15.8.2.13). |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 2931 | __ vmov(double_scratch, -V8_INFINITY, scratch); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2932 | __ VFPCompareAndSetFlags(double_base, double_scratch); |
| 2933 | __ vmov(double_result, kDoubleRegZero, eq); |
| 2934 | __ b(eq, &done); |
| 2935 | |
| 2936 | // Add +0 to convert -0 to +0. |
| 2937 | __ vadd(double_scratch, double_base, kDoubleRegZero); |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 2938 | __ vmov(double_result, 1.0, scratch); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2939 | __ vsqrt(double_scratch, double_scratch); |
| 2940 | __ vdiv(double_result, double_result, double_scratch); |
| 2941 | __ jmp(&done); |
| 2942 | } |
| 2943 | |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2944 | __ push(lr); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2945 | { |
| 2946 | AllowExternalCallThatCantCauseGC scope(masm); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2947 | __ PrepareCallCFunction(0, 2, scratch); |
| 2948 | __ SetCallCDoubleArguments(double_base, double_exponent); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2949 | __ CallCFunction( |
| 2950 | ExternalReference::power_double_double_function(masm->isolate()), |
| 2951 | 0, 2); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 2952 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2953 | __ pop(lr); |
| 2954 | __ GetCFunctionDoubleResult(double_result); |
| 2955 | __ jmp(&done); |
| 2956 | |
| 2957 | __ bind(&int_exponent_convert); |
| 2958 | __ vcvt_u32_f64(single_scratch, double_exponent); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 2959 | __ vmov(scratch, single_scratch); |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 2960 | } |
| 2961 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2962 | // Calculate power with integer exponent. |
| 2963 | __ bind(&int_exponent); |
| 2964 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 2965 | // Get two copies of exponent in the registers scratch and exponent. |
| 2966 | if (exponent_type_ == INTEGER) { |
| 2967 | __ mov(scratch, exponent); |
| 2968 | } else { |
| 2969 | // Exponent has previously been stored into scratch as untagged integer. |
| 2970 | __ mov(exponent, scratch); |
| 2971 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2972 | __ vmov(double_scratch, double_base); // Back up base. |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 2973 | __ vmov(double_result, 1.0, scratch2); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2974 | |
| 2975 | // Get absolute value of exponent. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2976 | __ cmp(scratch, Operand::Zero()); |
| 2977 | __ mov(scratch2, Operand::Zero(), LeaveCC, mi); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2978 | __ sub(scratch, scratch2, scratch, LeaveCC, mi); |
| 2979 | |
| 2980 | Label while_true; |
| 2981 | __ bind(&while_true); |
| 2982 | __ mov(scratch, Operand(scratch, ASR, 1), SetCC); |
| 2983 | __ vmul(double_result, double_result, double_scratch, cs); |
| 2984 | __ vmul(double_scratch, double_scratch, double_scratch, ne); |
| 2985 | __ b(ne, &while_true); |
| 2986 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 2987 | __ cmp(exponent, Operand::Zero()); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2988 | __ b(ge, &done); |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 2989 | __ vmov(double_scratch, 1.0, scratch); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 2990 | __ vdiv(double_result, double_scratch, double_result); |
| 2991 | // Test whether result is zero. Bail out to check for subnormal result. |
| 2992 | // Due to subnormals, x^-y == (1/x)^y does not hold in all cases. |
| 2993 | __ VFPCompareAndSetFlags(double_result, 0.0); |
| 2994 | __ b(ne, &done); |
| 2995 | // double_exponent may not containe the exponent value if the input was a |
| 2996 | // smi. We set it with exponent value before bailing out. |
| 2997 | __ vmov(single_scratch, exponent); |
| 2998 | __ vcvt_f64_s32(double_exponent, single_scratch); |
| 2999 | |
| 3000 | // Returning or bailing out. |
| 3001 | Counters* counters = masm->isolate()->counters(); |
| 3002 | if (exponent_type_ == ON_STACK) { |
| 3003 | // The arguments are still on the stack. |
| 3004 | __ bind(&call_runtime); |
| 3005 | __ TailCallRuntime(Runtime::kMath_pow_cfunction, 2, 1); |
| 3006 | |
| 3007 | // The stub is called from non-optimized code, which expects the result |
| 3008 | // as heap number in exponent. |
| 3009 | __ bind(&done); |
| 3010 | __ AllocateHeapNumber( |
| 3011 | heapnumber, scratch, scratch2, heapnumbermap, &call_runtime); |
| 3012 | __ vstr(double_result, |
| 3013 | FieldMemOperand(heapnumber, HeapNumber::kValueOffset)); |
| 3014 | ASSERT(heapnumber.is(r0)); |
| 3015 | __ IncrementCounter(counters->math_pow(), 1, scratch, scratch2); |
| 3016 | __ Ret(2); |
| 3017 | } else { |
| 3018 | __ push(lr); |
| 3019 | { |
| 3020 | AllowExternalCallThatCantCauseGC scope(masm); |
| 3021 | __ PrepareCallCFunction(0, 2, scratch); |
| 3022 | __ SetCallCDoubleArguments(double_base, double_exponent); |
| 3023 | __ CallCFunction( |
| 3024 | ExternalReference::power_double_double_function(masm->isolate()), |
| 3025 | 0, 2); |
| 3026 | } |
| 3027 | __ pop(lr); |
| 3028 | __ GetCFunctionDoubleResult(double_result); |
| 3029 | |
| 3030 | __ bind(&done); |
| 3031 | __ IncrementCounter(counters->math_pow(), 1, scratch, scratch2); |
| 3032 | __ Ret(); |
| 3033 | } |
danno@chromium.org | 4d3fe4e | 2011-03-10 10:14:28 +0000 | [diff] [blame] | 3034 | } |
| 3035 | |
| 3036 | |
| 3037 | bool CEntryStub::NeedsImmovableCode() { |
| 3038 | return true; |
| 3039 | } |
| 3040 | |
| 3041 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3042 | bool CEntryStub::IsPregenerated() { |
| 3043 | return (!save_doubles_ || ISOLATE->fp_stubs_generated()) && |
| 3044 | result_size_ == 1; |
| 3045 | } |
| 3046 | |
| 3047 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3048 | void CodeStub::GenerateStubsAheadOfTime(Isolate* isolate) { |
| 3049 | CEntryStub::GenerateAheadOfTime(isolate); |
| 3050 | WriteInt32ToHeapNumberStub::GenerateFixedRegStubsAheadOfTime(isolate); |
| 3051 | StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime(isolate); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3052 | StubFailureTrampolineStub::GenerateAheadOfTime(isolate); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3053 | RecordWriteStub::GenerateFixedRegStubsAheadOfTime(isolate); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 3054 | if (FLAG_optimize_constructed_arrays) { |
| 3055 | ArrayConstructorStubBase::GenerateStubsAheadOfTime(isolate); |
| 3056 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3057 | } |
| 3058 | |
| 3059 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3060 | void CodeStub::GenerateFPStubs(Isolate* isolate) { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3061 | SaveFPRegsMode mode = kSaveFPRegs; |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 3062 | CEntryStub save_doubles(1, mode); |
| 3063 | StoreBufferOverflowStub stub(mode); |
| 3064 | // These stubs might already be in the snapshot, detect that and don't |
| 3065 | // regenerate, which would lead to code stub initialization state being messed |
| 3066 | // up. |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3067 | Code* save_doubles_code; |
| 3068 | if (!save_doubles.FindCodeInCache(&save_doubles_code, isolate)) { |
| 3069 | save_doubles_code = *save_doubles.GetCode(isolate); |
yangguo@chromium.org | a6bbcc8 | 2012-12-21 12:35:02 +0000 | [diff] [blame] | 3070 | } |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3071 | Code* store_buffer_overflow_code; |
| 3072 | if (!stub.FindCodeInCache(&store_buffer_overflow_code, isolate)) { |
| 3073 | store_buffer_overflow_code = *stub.GetCode(isolate); |
| 3074 | } |
| 3075 | save_doubles_code->set_is_pregenerated(true); |
| 3076 | store_buffer_overflow_code->set_is_pregenerated(true); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 3077 | isolate->set_fp_stubs_generated(true); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3078 | } |
| 3079 | |
| 3080 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3081 | void CEntryStub::GenerateAheadOfTime(Isolate* isolate) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3082 | CEntryStub stub(1, kDontSaveFPRegs); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 3083 | Handle<Code> code = stub.GetCode(isolate); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3084 | code->set_is_pregenerated(true); |
| 3085 | } |
| 3086 | |
| 3087 | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 3088 | static void JumpIfOOM(MacroAssembler* masm, |
| 3089 | Register value, |
| 3090 | Register scratch, |
| 3091 | Label* oom_label) { |
| 3092 | STATIC_ASSERT(Failure::OUT_OF_MEMORY_EXCEPTION == 3); |
| 3093 | STATIC_ASSERT(kFailureTag == 3); |
| 3094 | __ and_(scratch, value, Operand(0xf)); |
| 3095 | __ cmp(scratch, Operand(0xf)); |
| 3096 | __ b(eq, oom_label); |
| 3097 | } |
| 3098 | |
| 3099 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3100 | void CEntryStub::GenerateCore(MacroAssembler* masm, |
| 3101 | Label* throw_normal_exception, |
| 3102 | Label* throw_termination_exception, |
| 3103 | Label* throw_out_of_memory_exception, |
| 3104 | bool do_gc, |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3105 | bool always_allocate) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3106 | // r0: result parameter for PerformGC, if any |
| 3107 | // r4: number of arguments including receiver (C callee-saved) |
| 3108 | // r5: pointer to builtin function (C callee-saved) |
| 3109 | // r6: pointer to the first argument (C callee-saved) |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3110 | Isolate* isolate = masm->isolate(); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3111 | |
| 3112 | if (do_gc) { |
| 3113 | // Passing r0. |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 3114 | __ PrepareCallCFunction(1, 0, r1); |
| 3115 | __ CallCFunction(ExternalReference::perform_gc_function(isolate), |
| 3116 | 1, 0); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3117 | } |
| 3118 | |
| 3119 | ExternalReference scope_depth = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3120 | ExternalReference::heap_always_allocate_scope_depth(isolate); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3121 | if (always_allocate) { |
| 3122 | __ mov(r0, Operand(scope_depth)); |
| 3123 | __ ldr(r1, MemOperand(r0)); |
| 3124 | __ add(r1, r1, Operand(1)); |
| 3125 | __ str(r1, MemOperand(r0)); |
| 3126 | } |
| 3127 | |
| 3128 | // Call C built-in. |
| 3129 | // r0 = argc, r1 = argv |
| 3130 | __ mov(r0, Operand(r4)); |
| 3131 | __ mov(r1, Operand(r6)); |
| 3132 | |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3133 | #if defined(V8_HOST_ARCH_ARM) |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3134 | int frame_alignment = MacroAssembler::ActivationFrameAlignment(); |
| 3135 | int frame_alignment_mask = frame_alignment - 1; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3136 | if (FLAG_debug_code) { |
| 3137 | if (frame_alignment > kPointerSize) { |
| 3138 | Label alignment_as_expected; |
| 3139 | ASSERT(IsPowerOf2(frame_alignment)); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 3140 | __ tst(sp, Operand(frame_alignment_mask)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3141 | __ b(eq, &alignment_as_expected); |
| 3142 | // Don't use Check here, as it will call Runtime_Abort re-entering here. |
| 3143 | __ stop("Unexpected alignment"); |
| 3144 | __ bind(&alignment_as_expected); |
| 3145 | } |
| 3146 | } |
| 3147 | #endif |
| 3148 | |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 3149 | __ mov(r2, Operand(ExternalReference::isolate_address(isolate))); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3150 | |
svenpanne@chromium.org | 6d786c9 | 2011-06-15 10:58:27 +0000 | [diff] [blame] | 3151 | // To let the GC traverse the return address of the exit frames, we need to |
| 3152 | // know where the return address is. The CEntryStub is unmovable, so |
| 3153 | // we can store the address on the stack to be able to find it again and |
| 3154 | // we never have to restore it, because it will not change. |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3155 | // Compute the return address in lr to return to after the jump below. Pc is |
| 3156 | // already at '+ 8' from the current instruction but return is after three |
| 3157 | // instructions so add another 4 to pc to get the return address. |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3158 | { |
| 3159 | // Prevent literal pool emission before return address. |
| 3160 | Assembler::BlockConstPoolScope block_const_pool(masm); |
| 3161 | masm->add(lr, pc, Operand(4)); |
| 3162 | __ str(lr, MemOperand(sp, 0)); |
| 3163 | masm->Jump(r5); |
| 3164 | } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3165 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3166 | __ VFPEnsureFPSCRState(r2); |
| 3167 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3168 | if (always_allocate) { |
| 3169 | // It's okay to clobber r2 and r3 here. Don't mess with r0 and r1 |
| 3170 | // though (contain the result). |
| 3171 | __ mov(r2, Operand(scope_depth)); |
| 3172 | __ ldr(r3, MemOperand(r2)); |
| 3173 | __ sub(r3, r3, Operand(1)); |
| 3174 | __ str(r3, MemOperand(r2)); |
| 3175 | } |
| 3176 | |
| 3177 | // check for failure result |
| 3178 | Label failure_returned; |
| 3179 | STATIC_ASSERT(((kFailureTag + 1) & kFailureTagMask) == 0); |
| 3180 | // Lower 2 bits of r2 are 0 iff r0 has failure tag. |
| 3181 | __ add(r2, r0, Operand(1)); |
| 3182 | __ tst(r2, Operand(kFailureTagMask)); |
| 3183 | __ b(eq, &failure_returned); |
| 3184 | |
| 3185 | // Exit C frame and return. |
| 3186 | // r0:r1: result |
| 3187 | // sp: stack pointer |
| 3188 | // fp: frame pointer |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 3189 | // Callee-saved register r4 still holds argc. |
| 3190 | __ LeaveExitFrame(save_doubles_, r4); |
| 3191 | __ mov(pc, lr); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3192 | |
| 3193 | // check if we should retry or throw exception |
| 3194 | Label retry; |
| 3195 | __ bind(&failure_returned); |
| 3196 | STATIC_ASSERT(Failure::RETRY_AFTER_GC == 0); |
| 3197 | __ tst(r0, Operand(((1 << kFailureTypeTagSize) - 1) << kFailureTagSize)); |
| 3198 | __ b(eq, &retry); |
| 3199 | |
| 3200 | // Special handling of out of memory exceptions. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 3201 | JumpIfOOM(masm, r0, ip, throw_out_of_memory_exception); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3202 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3203 | // Retrieve the pending exception. |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3204 | __ mov(ip, Operand(ExternalReference(Isolate::kPendingExceptionAddress, |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3205 | isolate))); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3206 | __ ldr(r0, MemOperand(ip)); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3207 | |
| 3208 | // See if we just retrieved an OOM exception. |
| 3209 | JumpIfOOM(masm, r0, ip, throw_out_of_memory_exception); |
| 3210 | |
| 3211 | // Clear the pending exception. |
| 3212 | __ mov(r3, Operand(isolate->factory()->the_hole_value())); |
| 3213 | __ mov(ip, Operand(ExternalReference(Isolate::kPendingExceptionAddress, |
| 3214 | isolate))); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3215 | __ str(r3, MemOperand(ip)); |
| 3216 | |
| 3217 | // Special handling of termination exceptions which are uncatchable |
| 3218 | // by javascript code. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3219 | __ cmp(r0, Operand(isolate->factory()->termination_exception())); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3220 | __ b(eq, throw_termination_exception); |
| 3221 | |
| 3222 | // Handle normal exception. |
| 3223 | __ jmp(throw_normal_exception); |
| 3224 | |
| 3225 | __ bind(&retry); // pass last failure (r0) as parameter (r0) when retrying |
| 3226 | } |
| 3227 | |
| 3228 | |
| 3229 | void CEntryStub::Generate(MacroAssembler* masm) { |
| 3230 | // Called from JavaScript; parameters are on stack as if calling JS function |
| 3231 | // r0: number of arguments including receiver |
| 3232 | // r1: pointer to builtin function |
| 3233 | // fp: frame pointer (restored after C call) |
| 3234 | // sp: stack pointer (restored as callee's sp after C call) |
| 3235 | // cp: current context (C callee-saved) |
| 3236 | |
| 3237 | // Result returned in r0 or r0+r1 by default. |
| 3238 | |
| 3239 | // NOTE: Invocations of builtins may return failure objects |
| 3240 | // instead of a proper result. The builtin entry handles |
| 3241 | // this by performing a garbage collection and retrying the |
| 3242 | // builtin once. |
| 3243 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 3244 | // Compute the argv pointer in a callee-saved register. |
| 3245 | __ add(r6, sp, Operand(r0, LSL, kPointerSizeLog2)); |
| 3246 | __ sub(r6, r6, Operand(kPointerSize)); |
| 3247 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3248 | // Enter the exit frame that transitions from JavaScript to C++. |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3249 | FrameScope scope(masm, StackFrame::MANUAL); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3250 | __ EnterExitFrame(save_doubles_); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3251 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3252 | // Set up argc and the builtin function in callee-saved registers. |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 3253 | __ mov(r4, Operand(r0)); |
| 3254 | __ mov(r5, Operand(r1)); |
| 3255 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3256 | // r4: number of arguments (C callee-saved) |
| 3257 | // r5: pointer to builtin function (C callee-saved) |
| 3258 | // r6: pointer to first argument (C callee-saved) |
| 3259 | |
| 3260 | Label throw_normal_exception; |
| 3261 | Label throw_termination_exception; |
| 3262 | Label throw_out_of_memory_exception; |
| 3263 | |
| 3264 | // Call into the runtime system. |
| 3265 | GenerateCore(masm, |
| 3266 | &throw_normal_exception, |
| 3267 | &throw_termination_exception, |
| 3268 | &throw_out_of_memory_exception, |
| 3269 | false, |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3270 | false); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3271 | |
| 3272 | // Do space-specific GC and retry runtime call. |
| 3273 | GenerateCore(masm, |
| 3274 | &throw_normal_exception, |
| 3275 | &throw_termination_exception, |
| 3276 | &throw_out_of_memory_exception, |
| 3277 | true, |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3278 | false); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3279 | |
| 3280 | // Do full GC and retry runtime call one final time. |
| 3281 | Failure* failure = Failure::InternalError(); |
| 3282 | __ mov(r0, Operand(reinterpret_cast<int32_t>(failure))); |
| 3283 | GenerateCore(masm, |
| 3284 | &throw_normal_exception, |
| 3285 | &throw_termination_exception, |
| 3286 | &throw_out_of_memory_exception, |
| 3287 | true, |
ager@chromium.org | 0ee099b | 2011-01-25 14:06:47 +0000 | [diff] [blame] | 3288 | true); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3289 | |
| 3290 | __ bind(&throw_out_of_memory_exception); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 3291 | // Set external caught exception to false. |
| 3292 | Isolate* isolate = masm->isolate(); |
| 3293 | ExternalReference external_caught(Isolate::kExternalCaughtExceptionAddress, |
| 3294 | isolate); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 3295 | __ mov(r0, Operand(false, RelocInfo::NONE32)); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 3296 | __ mov(r2, Operand(external_caught)); |
| 3297 | __ str(r0, MemOperand(r2)); |
| 3298 | |
| 3299 | // Set pending exception and r0 to out of memory exception. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 3300 | Label already_have_failure; |
| 3301 | JumpIfOOM(masm, r0, ip, &already_have_failure); |
| 3302 | Failure* out_of_memory = Failure::OutOfMemoryException(0x1); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 3303 | __ mov(r0, Operand(reinterpret_cast<int32_t>(out_of_memory))); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 3304 | __ bind(&already_have_failure); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 3305 | __ mov(r2, Operand(ExternalReference(Isolate::kPendingExceptionAddress, |
| 3306 | isolate))); |
| 3307 | __ str(r0, MemOperand(r2)); |
| 3308 | // Fall through to the next label. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3309 | |
| 3310 | __ bind(&throw_termination_exception); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 3311 | __ ThrowUncatchable(r0); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3312 | |
| 3313 | __ bind(&throw_normal_exception); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 3314 | __ Throw(r0); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3315 | } |
| 3316 | |
| 3317 | |
| 3318 | void JSEntryStub::GenerateBody(MacroAssembler* masm, bool is_construct) { |
| 3319 | // r0: code entry |
| 3320 | // r1: function |
| 3321 | // r2: receiver |
| 3322 | // r3: argc |
| 3323 | // [sp+0]: argv |
| 3324 | |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 3325 | Label invoke, handler_entry, exit; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3326 | |
| 3327 | // Called from C, so do not pop argc and args on exit (preserve sp) |
| 3328 | // No need to save register-passed args |
| 3329 | // Save callee-saved registers (incl. cp and fp), sp, and lr |
| 3330 | __ stm(db_w, sp, kCalleeSaved | lr.bit()); |
| 3331 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3332 | // Save callee-saved vfp registers. |
| 3333 | __ vstm(db_w, sp, kFirstCalleeSavedDoubleReg, kLastCalleeSavedDoubleReg); |
| 3334 | // Set up the reserved register for 0.0. |
| 3335 | __ vmov(kDoubleRegZero, 0.0); |
| 3336 | __ VFPEnsureFPSCRState(r4); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 3337 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3338 | // Get address of argv, see stm above. |
| 3339 | // r0: code entry |
| 3340 | // r1: function |
| 3341 | // r2: receiver |
| 3342 | // r3: argc |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 3343 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3344 | // Set up argv in r4. |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 3345 | int offset_to_argv = (kNumCalleeSaved + 1) * kPointerSize; |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3346 | offset_to_argv += kNumDoubleCalleeSaved * kDoubleSize; |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 3347 | __ ldr(r4, MemOperand(sp, offset_to_argv)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3348 | |
| 3349 | // Push a frame with special values setup to mark it as an entry frame. |
| 3350 | // r0: code entry |
| 3351 | // r1: function |
| 3352 | // r2: receiver |
| 3353 | // r3: argc |
| 3354 | // r4: argv |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3355 | Isolate* isolate = masm->isolate(); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3356 | __ mov(r8, Operand(-1)); // Push a bad frame pointer to fail if it is used. |
| 3357 | int marker = is_construct ? StackFrame::ENTRY_CONSTRUCT : StackFrame::ENTRY; |
| 3358 | __ mov(r7, Operand(Smi::FromInt(marker))); |
| 3359 | __ mov(r6, Operand(Smi::FromInt(marker))); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3360 | __ mov(r5, |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3361 | Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate))); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3362 | __ ldr(r5, MemOperand(r5)); |
| 3363 | __ Push(r8, r7, r6, r5); |
| 3364 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3365 | // Set up frame pointer for the frame to be pushed. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3366 | __ add(fp, sp, Operand(-EntryFrameConstants::kCallerFPOffset)); |
| 3367 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3368 | // If this is the outermost JS call, set js_entry_sp value. |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3369 | Label non_outermost_js; |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3370 | ExternalReference js_entry_sp(Isolate::kJSEntrySPAddress, isolate); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3371 | __ mov(r5, Operand(ExternalReference(js_entry_sp))); |
| 3372 | __ ldr(r6, MemOperand(r5)); |
ricow@chromium.org | ddd545c | 2011-08-24 12:02:41 +0000 | [diff] [blame] | 3373 | __ cmp(r6, Operand::Zero()); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3374 | __ b(ne, &non_outermost_js); |
| 3375 | __ str(fp, MemOperand(r5)); |
| 3376 | __ mov(ip, Operand(Smi::FromInt(StackFrame::OUTERMOST_JSENTRY_FRAME))); |
| 3377 | Label cont; |
| 3378 | __ b(&cont); |
| 3379 | __ bind(&non_outermost_js); |
| 3380 | __ mov(ip, Operand(Smi::FromInt(StackFrame::INNER_JSENTRY_FRAME))); |
| 3381 | __ bind(&cont); |
| 3382 | __ push(ip); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 3383 | |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 3384 | // Jump to a faked try block that does the invoke, with a faked catch |
| 3385 | // block that sets the pending exception. |
| 3386 | __ jmp(&invoke); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3387 | |
| 3388 | // Block literal pool emission whilst taking the position of the handler |
| 3389 | // entry. This avoids making the assumption that literal pools are always |
| 3390 | // emitted after an instruction is emitted, rather than before. |
| 3391 | { |
| 3392 | Assembler::BlockConstPoolScope block_const_pool(masm); |
| 3393 | __ bind(&handler_entry); |
| 3394 | handler_offset_ = handler_entry.pos(); |
| 3395 | // Caught exception: Store result (exception) in the pending exception |
| 3396 | // field in the JSEnv and return a failure sentinel. Coming in here the |
| 3397 | // fp will be invalid because the PushTryHandler below sets it to 0 to |
| 3398 | // signal the existence of the JSEntry frame. |
| 3399 | __ mov(ip, Operand(ExternalReference(Isolate::kPendingExceptionAddress, |
| 3400 | isolate))); |
| 3401 | } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3402 | __ str(r0, MemOperand(ip)); |
| 3403 | __ mov(r0, Operand(reinterpret_cast<int32_t>(Failure::Exception()))); |
| 3404 | __ b(&exit); |
| 3405 | |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 3406 | // Invoke: Link this frame into the handler chain. There's only one |
| 3407 | // handler block in this code object, so its index is 0. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3408 | __ bind(&invoke); |
| 3409 | // Must preserve r0-r4, r5-r7 are available. |
yangguo@chromium.org | 78d1ad4 | 2012-02-09 13:53:47 +0000 | [diff] [blame] | 3410 | __ PushTryHandler(StackHandler::JS_ENTRY, 0); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3411 | // If an exception not caught by another handler occurs, this handler |
| 3412 | // returns control to the code after the bl(&invoke) above, which |
| 3413 | // restores all kCalleeSaved registers (including cp and fp) to their |
| 3414 | // saved values before returning a failure to C. |
| 3415 | |
| 3416 | // Clear any pending exceptions. |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3417 | __ mov(r5, Operand(isolate->factory()->the_hole_value())); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3418 | __ mov(ip, Operand(ExternalReference(Isolate::kPendingExceptionAddress, |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3419 | isolate))); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3420 | __ str(r5, MemOperand(ip)); |
| 3421 | |
| 3422 | // Invoke the function by calling through JS entry trampoline builtin. |
| 3423 | // Notice that we cannot store a reference to the trampoline code directly in |
| 3424 | // this stub, because runtime stubs are not traversed when doing GC. |
| 3425 | |
| 3426 | // Expected registers by Builtins::JSEntryTrampoline |
| 3427 | // r0: code entry |
| 3428 | // r1: function |
| 3429 | // r2: receiver |
| 3430 | // r3: argc |
| 3431 | // r4: argv |
| 3432 | if (is_construct) { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3433 | ExternalReference construct_entry(Builtins::kJSConstructEntryTrampoline, |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3434 | isolate); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3435 | __ mov(ip, Operand(construct_entry)); |
| 3436 | } else { |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 3437 | ExternalReference entry(Builtins::kJSEntryTrampoline, isolate); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3438 | __ mov(ip, Operand(entry)); |
| 3439 | } |
| 3440 | __ ldr(ip, MemOperand(ip)); // deref address |
| 3441 | |
| 3442 | // Branch and link to JSEntryTrampoline. We don't use the double underscore |
| 3443 | // macro for the add instruction because we don't want the coverage tool |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 3444 | // inserting instructions here after we read the pc. We block literal pool |
| 3445 | // emission for the same reason. |
| 3446 | { |
| 3447 | Assembler::BlockConstPoolScope block_const_pool(masm); |
| 3448 | __ mov(lr, Operand(pc)); |
| 3449 | masm->add(pc, ip, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 3450 | } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3451 | |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3452 | // Unlink this frame from the handler chain. |
| 3453 | __ PopTryHandler(); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3454 | |
| 3455 | __ bind(&exit); // r0 holds result |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3456 | // Check if the current stack frame is marked as the outermost JS frame. |
| 3457 | Label non_outermost_js_2; |
| 3458 | __ pop(r5); |
| 3459 | __ cmp(r5, Operand(Smi::FromInt(StackFrame::OUTERMOST_JSENTRY_FRAME))); |
| 3460 | __ b(ne, &non_outermost_js_2); |
ricow@chromium.org | ddd545c | 2011-08-24 12:02:41 +0000 | [diff] [blame] | 3461 | __ mov(r6, Operand::Zero()); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3462 | __ mov(r5, Operand(ExternalReference(js_entry_sp))); |
| 3463 | __ str(r6, MemOperand(r5)); |
| 3464 | __ bind(&non_outermost_js_2); |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 3465 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3466 | // Restore the top frame descriptors from the stack. |
| 3467 | __ pop(r3); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 3468 | __ mov(ip, |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 3469 | Operand(ExternalReference(Isolate::kCEntryFPAddress, isolate))); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3470 | __ str(r3, MemOperand(ip)); |
| 3471 | |
| 3472 | // Reset the stack to the callee saved registers. |
| 3473 | __ add(sp, sp, Operand(-EntryFrameConstants::kCallerFPOffset)); |
| 3474 | |
| 3475 | // Restore callee-saved registers and return. |
| 3476 | #ifdef DEBUG |
| 3477 | if (FLAG_debug_code) { |
| 3478 | __ mov(lr, Operand(pc)); |
| 3479 | } |
| 3480 | #endif |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 3481 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 3482 | // Restore callee-saved vfp registers. |
| 3483 | __ vldm(ia_w, sp, kFirstCalleeSavedDoubleReg, kLastCalleeSavedDoubleReg); |
lrn@chromium.org | ac2828d | 2011-06-23 06:29:21 +0000 | [diff] [blame] | 3484 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3485 | __ ldm(ia_w, sp, kCalleeSaved | pc.bit()); |
| 3486 | } |
| 3487 | |
| 3488 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3489 | // Uses registers r0 to r4. |
| 3490 | // Expected input (depending on whether args are in registers or on the stack): |
| 3491 | // * object: r0 or at sp + 1 * kPointerSize. |
| 3492 | // * function: r1 or at sp. |
| 3493 | // |
| 3494 | // An inlined call site may have been generated before calling this stub. |
| 3495 | // In this case the offset to the inline site to patch is passed on the stack, |
| 3496 | // in the safepoint slot for register r4. |
| 3497 | // (See LCodeGen::DoInstanceOfKnownGlobal) |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3498 | void InstanceofStub::Generate(MacroAssembler* masm) { |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3499 | // Call site inlining and patching implies arguments in registers. |
| 3500 | ASSERT(HasArgsInRegisters() || !HasCallSiteInlineCheck()); |
| 3501 | // ReturnTrueFalse is only implemented for inlined call sites. |
| 3502 | ASSERT(!ReturnTrueFalseObject() || HasCallSiteInlineCheck()); |
| 3503 | |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3504 | // Fixed register usage throughout the stub: |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 3505 | const Register object = r0; // Object (lhs). |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3506 | Register map = r3; // Map of the object. |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 3507 | const Register function = r1; // Function (rhs). |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3508 | const Register prototype = r4; // Prototype of the function. |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3509 | const Register inline_site = r9; |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3510 | const Register scratch = r2; |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3511 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3512 | const int32_t kDeltaToLoadBoolResult = 4 * kPointerSize; |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3513 | |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3514 | Label slow, loop, is_instance, is_not_instance, not_js_object; |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3515 | |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 3516 | if (!HasArgsInRegisters()) { |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 3517 | __ ldr(object, MemOperand(sp, 1 * kPointerSize)); |
| 3518 | __ ldr(function, MemOperand(sp, 0)); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3519 | } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3520 | |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3521 | // Check that the left hand is a JS object and load map. |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 3522 | __ JumpIfSmi(object, ¬_js_object); |
fschneider@chromium.org | 9e3e0b6 | 2011-01-03 10:16:46 +0000 | [diff] [blame] | 3523 | __ IsObjectJSObjectType(object, map, scratch, ¬_js_object); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3524 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3525 | // If there is a call site cache don't look in the global cache, but do the |
| 3526 | // real lookup and update the call site cache. |
| 3527 | if (!HasCallSiteInlineCheck()) { |
| 3528 | Label miss; |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3529 | __ CompareRoot(function, Heap::kInstanceofCacheFunctionRootIndex); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3530 | __ b(ne, &miss); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 3531 | __ CompareRoot(map, Heap::kInstanceofCacheMapRootIndex); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3532 | __ b(ne, &miss); |
| 3533 | __ LoadRoot(r0, Heap::kInstanceofCacheAnswerRootIndex); |
| 3534 | __ Ret(HasArgsInRegisters() ? 0 : 2); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3535 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3536 | __ bind(&miss); |
| 3537 | } |
| 3538 | |
| 3539 | // Get the prototype of the function. |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 3540 | __ TryGetFunctionPrototype(function, prototype, scratch, &slow, true); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3541 | |
| 3542 | // Check that the function prototype is a JS object. |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 3543 | __ JumpIfSmi(prototype, &slow); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3544 | __ IsObjectJSObjectType(prototype, scratch, scratch, &slow); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3545 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3546 | // Update the global instanceof or call site inlined cache with the current |
| 3547 | // map and function. The cached answer will be set when it is known below. |
| 3548 | if (!HasCallSiteInlineCheck()) { |
| 3549 | __ StoreRoot(function, Heap::kInstanceofCacheFunctionRootIndex); |
| 3550 | __ StoreRoot(map, Heap::kInstanceofCacheMapRootIndex); |
| 3551 | } else { |
| 3552 | ASSERT(HasArgsInRegisters()); |
| 3553 | // Patch the (relocated) inlined map check. |
| 3554 | |
| 3555 | // The offset was stored in r4 safepoint slot. |
| 3556 | // (See LCodeGen::DoDeferredLInstanceOfKnownGlobal) |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 3557 | __ LoadFromSafepointRegisterSlot(scratch, r4); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3558 | __ sub(inline_site, lr, scratch); |
| 3559 | // Get the map location in scratch and patch it. |
| 3560 | __ GetRelocatedValueLocation(inline_site, scratch); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3561 | __ ldr(scratch, MemOperand(scratch)); |
| 3562 | __ str(map, FieldMemOperand(scratch, JSGlobalPropertyCell::kValueOffset)); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3563 | } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3564 | |
| 3565 | // Register mapping: r3 is object map and r4 is function prototype. |
| 3566 | // Get prototype of object into r2. |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3567 | __ ldr(scratch, FieldMemOperand(map, Map::kPrototypeOffset)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3568 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3569 | // We don't need map any more. Use it as a scratch register. |
| 3570 | Register scratch2 = map; |
| 3571 | map = no_reg; |
| 3572 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3573 | // Loop through the prototype chain looking for the function prototype. |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3574 | __ LoadRoot(scratch2, Heap::kNullValueRootIndex); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3575 | __ bind(&loop); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3576 | __ cmp(scratch, Operand(prototype)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3577 | __ b(eq, &is_instance); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3578 | __ cmp(scratch, scratch2); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3579 | __ b(eq, &is_not_instance); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3580 | __ ldr(scratch, FieldMemOperand(scratch, HeapObject::kMapOffset)); |
| 3581 | __ ldr(scratch, FieldMemOperand(scratch, Map::kPrototypeOffset)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3582 | __ jmp(&loop); |
| 3583 | |
| 3584 | __ bind(&is_instance); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3585 | if (!HasCallSiteInlineCheck()) { |
| 3586 | __ mov(r0, Operand(Smi::FromInt(0))); |
| 3587 | __ StoreRoot(r0, Heap::kInstanceofCacheAnswerRootIndex); |
| 3588 | } else { |
| 3589 | // Patch the call site to return true. |
| 3590 | __ LoadRoot(r0, Heap::kTrueValueRootIndex); |
| 3591 | __ add(inline_site, inline_site, Operand(kDeltaToLoadBoolResult)); |
| 3592 | // Get the boolean result location in scratch and patch it. |
| 3593 | __ GetRelocatedValueLocation(inline_site, scratch); |
| 3594 | __ str(r0, MemOperand(scratch)); |
| 3595 | |
| 3596 | if (!ReturnTrueFalseObject()) { |
| 3597 | __ mov(r0, Operand(Smi::FromInt(0))); |
| 3598 | } |
| 3599 | } |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 3600 | __ Ret(HasArgsInRegisters() ? 0 : 2); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3601 | |
| 3602 | __ bind(&is_not_instance); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3603 | if (!HasCallSiteInlineCheck()) { |
| 3604 | __ mov(r0, Operand(Smi::FromInt(1))); |
| 3605 | __ StoreRoot(r0, Heap::kInstanceofCacheAnswerRootIndex); |
| 3606 | } else { |
| 3607 | // Patch the call site to return false. |
| 3608 | __ LoadRoot(r0, Heap::kFalseValueRootIndex); |
| 3609 | __ add(inline_site, inline_site, Operand(kDeltaToLoadBoolResult)); |
| 3610 | // Get the boolean result location in scratch and patch it. |
| 3611 | __ GetRelocatedValueLocation(inline_site, scratch); |
| 3612 | __ str(r0, MemOperand(scratch)); |
| 3613 | |
| 3614 | if (!ReturnTrueFalseObject()) { |
| 3615 | __ mov(r0, Operand(Smi::FromInt(1))); |
| 3616 | } |
| 3617 | } |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 3618 | __ Ret(HasArgsInRegisters() ? 0 : 2); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3619 | |
| 3620 | Label object_not_null, object_not_null_or_smi; |
| 3621 | __ bind(¬_js_object); |
| 3622 | // Before null, smi and string value checks, check that the rhs is a function |
| 3623 | // as for a non-function rhs an exception needs to be thrown. |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 3624 | __ JumpIfSmi(function, &slow); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3625 | __ CompareObjectType(function, scratch2, scratch, JS_FUNCTION_TYPE); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3626 | __ b(ne, &slow); |
| 3627 | |
| 3628 | // Null is not instance of anything. |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 3629 | __ cmp(scratch, Operand(masm->isolate()->factory()->null_value())); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3630 | __ b(ne, &object_not_null); |
| 3631 | __ mov(r0, Operand(Smi::FromInt(1))); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 3632 | __ Ret(HasArgsInRegisters() ? 0 : 2); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3633 | |
| 3634 | __ bind(&object_not_null); |
| 3635 | // Smi values are not instances of anything. |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 3636 | __ JumpIfNotSmi(object, &object_not_null_or_smi); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3637 | __ mov(r0, Operand(Smi::FromInt(1))); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 3638 | __ Ret(HasArgsInRegisters() ? 0 : 2); |
whesse@chromium.org | 023421e | 2010-12-21 12:19:12 +0000 | [diff] [blame] | 3639 | |
| 3640 | __ bind(&object_not_null_or_smi); |
| 3641 | // String values are not instances of anything. |
| 3642 | __ IsObjectJSStringType(object, scratch, &slow); |
| 3643 | __ mov(r0, Operand(Smi::FromInt(1))); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 3644 | __ Ret(HasArgsInRegisters() ? 0 : 2); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3645 | |
| 3646 | // Slow-case. Tail call builtin. |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 3647 | __ bind(&slow); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3648 | if (!ReturnTrueFalseObject()) { |
| 3649 | if (HasArgsInRegisters()) { |
| 3650 | __ Push(r0, r1); |
| 3651 | } |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 3652 | __ InvokeBuiltin(Builtins::INSTANCE_OF, JUMP_FUNCTION); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3653 | } else { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 3654 | { |
| 3655 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 3656 | __ Push(r0, r1); |
| 3657 | __ InvokeBuiltin(Builtins::INSTANCE_OF, CALL_FUNCTION); |
| 3658 | } |
ricow@chromium.org | ddd545c | 2011-08-24 12:02:41 +0000 | [diff] [blame] | 3659 | __ cmp(r0, Operand::Zero()); |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3660 | __ LoadRoot(r0, Heap::kTrueValueRootIndex, eq); |
| 3661 | __ LoadRoot(r0, Heap::kFalseValueRootIndex, ne); |
| 3662 | __ Ret(HasArgsInRegisters() ? 0 : 2); |
| 3663 | } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3664 | } |
| 3665 | |
| 3666 | |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 3667 | void FunctionPrototypeStub::Generate(MacroAssembler* masm) { |
| 3668 | Label miss; |
| 3669 | Register receiver; |
| 3670 | if (kind() == Code::KEYED_LOAD_IC) { |
| 3671 | // ----------- S t a t e ------------- |
| 3672 | // -- lr : return address |
| 3673 | // -- r0 : key |
| 3674 | // -- r1 : receiver |
| 3675 | // ----------------------------------- |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 3676 | __ cmp(r0, Operand(masm->isolate()->factory()->prototype_string())); |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 3677 | __ b(ne, &miss); |
| 3678 | receiver = r1; |
| 3679 | } else { |
| 3680 | ASSERT(kind() == Code::LOAD_IC); |
| 3681 | // ----------- S t a t e ------------- |
| 3682 | // -- r2 : name |
| 3683 | // -- lr : return address |
| 3684 | // -- r0 : receiver |
| 3685 | // -- sp[0] : receiver |
| 3686 | // ----------------------------------- |
| 3687 | receiver = r0; |
| 3688 | } |
| 3689 | |
| 3690 | StubCompiler::GenerateLoadFunctionPrototype(masm, receiver, r3, r4, &miss); |
| 3691 | __ bind(&miss); |
svenpanne@chromium.org | 2bda543 | 2013-03-15 12:39:50 +0000 | [diff] [blame] | 3692 | StubCompiler::TailCallBuiltin(masm, StubCompiler::MissBuiltin(kind())); |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 3693 | } |
| 3694 | |
| 3695 | |
| 3696 | void StringLengthStub::Generate(MacroAssembler* masm) { |
| 3697 | Label miss; |
| 3698 | Register receiver; |
| 3699 | if (kind() == Code::KEYED_LOAD_IC) { |
| 3700 | // ----------- S t a t e ------------- |
| 3701 | // -- lr : return address |
| 3702 | // -- r0 : key |
| 3703 | // -- r1 : receiver |
| 3704 | // ----------------------------------- |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 3705 | __ cmp(r0, Operand(masm->isolate()->factory()->length_string())); |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 3706 | __ b(ne, &miss); |
| 3707 | receiver = r1; |
| 3708 | } else { |
| 3709 | ASSERT(kind() == Code::LOAD_IC); |
| 3710 | // ----------- S t a t e ------------- |
| 3711 | // -- r2 : name |
| 3712 | // -- lr : return address |
| 3713 | // -- r0 : receiver |
| 3714 | // -- sp[0] : receiver |
| 3715 | // ----------------------------------- |
| 3716 | receiver = r0; |
| 3717 | } |
| 3718 | |
| 3719 | StubCompiler::GenerateLoadStringLength(masm, receiver, r3, r4, &miss, |
| 3720 | support_wrapper_); |
| 3721 | |
| 3722 | __ bind(&miss); |
svenpanne@chromium.org | 2bda543 | 2013-03-15 12:39:50 +0000 | [diff] [blame] | 3723 | StubCompiler::TailCallBuiltin(masm, StubCompiler::MissBuiltin(kind())); |
mvstanton@chromium.org | 6bec009 | 2013-01-23 13:46:53 +0000 | [diff] [blame] | 3724 | } |
| 3725 | |
| 3726 | |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 3727 | void StoreArrayLengthStub::Generate(MacroAssembler* masm) { |
| 3728 | // This accepts as a receiver anything JSArray::SetElementsLength accepts |
| 3729 | // (currently anything except for external arrays which means anything with |
| 3730 | // elements of FixedArray type). Value must be a number, but only smis are |
| 3731 | // accepted as the most common case. |
| 3732 | Label miss; |
| 3733 | |
| 3734 | Register receiver; |
| 3735 | Register value; |
| 3736 | if (kind() == Code::KEYED_STORE_IC) { |
| 3737 | // ----------- S t a t e ------------- |
| 3738 | // -- lr : return address |
| 3739 | // -- r0 : value |
| 3740 | // -- r1 : key |
| 3741 | // -- r2 : receiver |
| 3742 | // ----------------------------------- |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 3743 | __ cmp(r1, Operand(masm->isolate()->factory()->length_string())); |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 3744 | __ b(ne, &miss); |
| 3745 | receiver = r2; |
| 3746 | value = r0; |
| 3747 | } else { |
| 3748 | ASSERT(kind() == Code::STORE_IC); |
| 3749 | // ----------- S t a t e ------------- |
| 3750 | // -- lr : return address |
| 3751 | // -- r0 : value |
| 3752 | // -- r1 : receiver |
| 3753 | // -- r2 : key |
| 3754 | // ----------------------------------- |
| 3755 | receiver = r1; |
| 3756 | value = r0; |
| 3757 | } |
| 3758 | Register scratch = r3; |
| 3759 | |
| 3760 | // Check that the receiver isn't a smi. |
| 3761 | __ JumpIfSmi(receiver, &miss); |
| 3762 | |
| 3763 | // Check that the object is a JS array. |
| 3764 | __ CompareObjectType(receiver, scratch, scratch, JS_ARRAY_TYPE); |
| 3765 | __ b(ne, &miss); |
| 3766 | |
| 3767 | // Check that elements are FixedArray. |
| 3768 | // We rely on StoreIC_ArrayLength below to deal with all types of |
| 3769 | // fast elements (including COW). |
| 3770 | __ ldr(scratch, FieldMemOperand(receiver, JSArray::kElementsOffset)); |
| 3771 | __ CompareObjectType(scratch, scratch, scratch, FIXED_ARRAY_TYPE); |
| 3772 | __ b(ne, &miss); |
| 3773 | |
| 3774 | // Check that the array has fast properties, otherwise the length |
| 3775 | // property might have been redefined. |
| 3776 | __ ldr(scratch, FieldMemOperand(receiver, JSArray::kPropertiesOffset)); |
| 3777 | __ ldr(scratch, FieldMemOperand(scratch, FixedArray::kMapOffset)); |
| 3778 | __ CompareRoot(scratch, Heap::kHashTableMapRootIndex); |
| 3779 | __ b(eq, &miss); |
| 3780 | |
| 3781 | // Check that value is a smi. |
| 3782 | __ JumpIfNotSmi(value, &miss); |
| 3783 | |
| 3784 | // Prepare tail call to StoreIC_ArrayLength. |
| 3785 | __ Push(receiver, value); |
| 3786 | |
| 3787 | ExternalReference ref = |
| 3788 | ExternalReference(IC_Utility(IC::kStoreIC_ArrayLength), masm->isolate()); |
| 3789 | __ TailCallExternalReference(ref, 2, 1); |
| 3790 | |
| 3791 | __ bind(&miss); |
| 3792 | |
svenpanne@chromium.org | 2bda543 | 2013-03-15 12:39:50 +0000 | [diff] [blame] | 3793 | StubCompiler::TailCallBuiltin(masm, StubCompiler::MissBuiltin(kind())); |
mvstanton@chromium.org | d16d853 | 2013-01-25 13:29:10 +0000 | [diff] [blame] | 3794 | } |
| 3795 | |
| 3796 | |
vegorov@chromium.org | 0a4e901 | 2011-01-24 12:33:13 +0000 | [diff] [blame] | 3797 | Register InstanceofStub::left() { return r0; } |
| 3798 | |
| 3799 | |
| 3800 | Register InstanceofStub::right() { return r1; } |
| 3801 | |
| 3802 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3803 | void ArgumentsAccessStub::GenerateReadElement(MacroAssembler* masm) { |
| 3804 | // The displacement is the offset of the last parameter (if any) |
| 3805 | // relative to the frame pointer. |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 3806 | const int kDisplacement = |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3807 | StandardFrameConstants::kCallerSPOffset - kPointerSize; |
| 3808 | |
| 3809 | // Check that the key is a smi. |
| 3810 | Label slow; |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 3811 | __ JumpIfNotSmi(r1, &slow); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3812 | |
| 3813 | // Check if the calling frame is an arguments adaptor frame. |
| 3814 | Label adaptor; |
| 3815 | __ ldr(r2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 3816 | __ ldr(r3, MemOperand(r2, StandardFrameConstants::kContextOffset)); |
| 3817 | __ cmp(r3, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 3818 | __ b(eq, &adaptor); |
| 3819 | |
| 3820 | // Check index against formal parameters count limit passed in |
| 3821 | // through register r0. Use unsigned comparison to get negative |
| 3822 | // check for free. |
| 3823 | __ cmp(r1, r0); |
kmillikin@chromium.org | d2c22f0 | 2011-01-10 08:15:37 +0000 | [diff] [blame] | 3824 | __ b(hs, &slow); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3825 | |
| 3826 | // Read the argument from the stack and return it. |
| 3827 | __ sub(r3, r0, r1); |
| 3828 | __ add(r3, fp, Operand(r3, LSL, kPointerSizeLog2 - kSmiTagSize)); |
| 3829 | __ ldr(r0, MemOperand(r3, kDisplacement)); |
| 3830 | __ Jump(lr); |
| 3831 | |
| 3832 | // Arguments adaptor case: Check index against actual arguments |
| 3833 | // limit found in the arguments adaptor frame. Use unsigned |
| 3834 | // comparison to get negative check for free. |
| 3835 | __ bind(&adaptor); |
| 3836 | __ ldr(r0, MemOperand(r2, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 3837 | __ cmp(r1, r0); |
| 3838 | __ b(cs, &slow); |
| 3839 | |
| 3840 | // Read the argument from the adaptor frame and return it. |
| 3841 | __ sub(r3, r0, r1); |
| 3842 | __ add(r3, r2, Operand(r3, LSL, kPointerSizeLog2 - kSmiTagSize)); |
| 3843 | __ ldr(r0, MemOperand(r3, kDisplacement)); |
| 3844 | __ Jump(lr); |
| 3845 | |
| 3846 | // Slow-case: Handle non-smi or out-of-bounds access to arguments |
| 3847 | // by calling the runtime system. |
| 3848 | __ bind(&slow); |
| 3849 | __ push(r1); |
| 3850 | __ TailCallRuntime(Runtime::kGetArgumentsProperty, 1, 1); |
| 3851 | } |
| 3852 | |
| 3853 | |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 3854 | void ArgumentsAccessStub::GenerateNewNonStrictSlow(MacroAssembler* masm) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 3855 | // sp[0] : number of parameters |
| 3856 | // sp[4] : receiver displacement |
| 3857 | // sp[8] : function |
| 3858 | |
| 3859 | // Check if the calling frame is an arguments adaptor frame. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 3860 | Label runtime; |
| 3861 | __ ldr(r3, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 3862 | __ ldr(r2, MemOperand(r3, StandardFrameConstants::kContextOffset)); |
| 3863 | __ cmp(r2, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 3864 | __ b(ne, &runtime); |
| 3865 | |
| 3866 | // Patch the arguments.length and the parameters pointer in the current frame. |
| 3867 | __ ldr(r2, MemOperand(r3, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 3868 | __ str(r2, MemOperand(sp, 0 * kPointerSize)); |
| 3869 | __ add(r3, r3, Operand(r2, LSL, 1)); |
| 3870 | __ add(r3, r3, Operand(StandardFrameConstants::kCallerSPOffset)); |
| 3871 | __ str(r3, MemOperand(sp, 1 * kPointerSize)); |
| 3872 | |
| 3873 | __ bind(&runtime); |
| 3874 | __ TailCallRuntime(Runtime::kNewArgumentsFast, 3, 1); |
| 3875 | } |
| 3876 | |
| 3877 | |
| 3878 | void ArgumentsAccessStub::GenerateNewNonStrictFast(MacroAssembler* masm) { |
| 3879 | // Stack layout: |
| 3880 | // sp[0] : number of parameters (tagged) |
| 3881 | // sp[4] : address of receiver argument |
| 3882 | // sp[8] : function |
| 3883 | // Registers used over whole function: |
| 3884 | // r6 : allocated object (tagged) |
| 3885 | // r9 : mapped parameter count (tagged) |
| 3886 | |
| 3887 | __ ldr(r1, MemOperand(sp, 0 * kPointerSize)); |
| 3888 | // r1 = parameter count (tagged) |
| 3889 | |
| 3890 | // Check if the calling frame is an arguments adaptor frame. |
| 3891 | Label runtime; |
| 3892 | Label adaptor_frame, try_allocate; |
| 3893 | __ ldr(r3, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 3894 | __ ldr(r2, MemOperand(r3, StandardFrameConstants::kContextOffset)); |
| 3895 | __ cmp(r2, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 3896 | __ b(eq, &adaptor_frame); |
| 3897 | |
| 3898 | // No adaptor, parameter count = argument count. |
| 3899 | __ mov(r2, r1); |
| 3900 | __ b(&try_allocate); |
| 3901 | |
| 3902 | // We have an adaptor frame. Patch the parameters pointer. |
| 3903 | __ bind(&adaptor_frame); |
| 3904 | __ ldr(r2, MemOperand(r3, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 3905 | __ add(r3, r3, Operand(r2, LSL, 1)); |
| 3906 | __ add(r3, r3, Operand(StandardFrameConstants::kCallerSPOffset)); |
| 3907 | __ str(r3, MemOperand(sp, 1 * kPointerSize)); |
| 3908 | |
| 3909 | // r1 = parameter count (tagged) |
| 3910 | // r2 = argument count (tagged) |
| 3911 | // Compute the mapped parameter count = min(r1, r2) in r1. |
| 3912 | __ cmp(r1, Operand(r2)); |
| 3913 | __ mov(r1, Operand(r2), LeaveCC, gt); |
| 3914 | |
| 3915 | __ bind(&try_allocate); |
| 3916 | |
| 3917 | // Compute the sizes of backing store, parameter map, and arguments object. |
| 3918 | // 1. Parameter map, has 2 extra words containing context and backing store. |
| 3919 | const int kParameterMapHeaderSize = |
| 3920 | FixedArray::kHeaderSize + 2 * kPointerSize; |
| 3921 | // If there are no mapped parameters, we do not need the parameter_map. |
| 3922 | __ cmp(r1, Operand(Smi::FromInt(0))); |
ricow@chromium.org | ddd545c | 2011-08-24 12:02:41 +0000 | [diff] [blame] | 3923 | __ mov(r9, Operand::Zero(), LeaveCC, eq); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 3924 | __ mov(r9, Operand(r1, LSL, 1), LeaveCC, ne); |
| 3925 | __ add(r9, r9, Operand(kParameterMapHeaderSize), LeaveCC, ne); |
| 3926 | |
| 3927 | // 2. Backing store. |
| 3928 | __ add(r9, r9, Operand(r2, LSL, 1)); |
| 3929 | __ add(r9, r9, Operand(FixedArray::kHeaderSize)); |
| 3930 | |
| 3931 | // 3. Arguments object. |
| 3932 | __ add(r9, r9, Operand(Heap::kArgumentsObjectSize)); |
| 3933 | |
| 3934 | // Do the allocation of all three objects in one go. |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 3935 | __ Allocate(r9, r0, r3, r4, &runtime, TAG_OBJECT); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 3936 | |
| 3937 | // r0 = address of new object(s) (tagged) |
| 3938 | // r2 = argument count (tagged) |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3939 | // Get the arguments boilerplate from the current native context into r4. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 3940 | const int kNormalOffset = |
| 3941 | Context::SlotOffset(Context::ARGUMENTS_BOILERPLATE_INDEX); |
| 3942 | const int kAliasedOffset = |
| 3943 | Context::SlotOffset(Context::ALIASED_ARGUMENTS_BOILERPLATE_INDEX); |
| 3944 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 3945 | __ ldr(r4, MemOperand(r8, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
| 3946 | __ ldr(r4, FieldMemOperand(r4, GlobalObject::kNativeContextOffset)); |
ricow@chromium.org | ddd545c | 2011-08-24 12:02:41 +0000 | [diff] [blame] | 3947 | __ cmp(r1, Operand::Zero()); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 3948 | __ ldr(r4, MemOperand(r4, kNormalOffset), eq); |
| 3949 | __ ldr(r4, MemOperand(r4, kAliasedOffset), ne); |
| 3950 | |
| 3951 | // r0 = address of new object (tagged) |
| 3952 | // r1 = mapped parameter count (tagged) |
| 3953 | // r2 = argument count (tagged) |
| 3954 | // r4 = address of boilerplate object (tagged) |
| 3955 | // Copy the JS object part. |
| 3956 | for (int i = 0; i < JSObject::kHeaderSize; i += kPointerSize) { |
| 3957 | __ ldr(r3, FieldMemOperand(r4, i)); |
| 3958 | __ str(r3, FieldMemOperand(r0, i)); |
| 3959 | } |
| 3960 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3961 | // Set up the callee in-object property. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 3962 | STATIC_ASSERT(Heap::kArgumentsCalleeIndex == 1); |
| 3963 | __ ldr(r3, MemOperand(sp, 2 * kPointerSize)); |
| 3964 | const int kCalleeOffset = JSObject::kHeaderSize + |
| 3965 | Heap::kArgumentsCalleeIndex * kPointerSize; |
| 3966 | __ str(r3, FieldMemOperand(r0, kCalleeOffset)); |
| 3967 | |
| 3968 | // Use the length (smi tagged) and set that as an in-object property too. |
| 3969 | STATIC_ASSERT(Heap::kArgumentsLengthIndex == 0); |
| 3970 | const int kLengthOffset = JSObject::kHeaderSize + |
| 3971 | Heap::kArgumentsLengthIndex * kPointerSize; |
| 3972 | __ str(r2, FieldMemOperand(r0, kLengthOffset)); |
| 3973 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 3974 | // Set up the elements pointer in the allocated arguments object. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 3975 | // If we allocated a parameter map, r4 will point there, otherwise |
| 3976 | // it will point to the backing store. |
| 3977 | __ add(r4, r0, Operand(Heap::kArgumentsObjectSize)); |
| 3978 | __ str(r4, FieldMemOperand(r0, JSObject::kElementsOffset)); |
| 3979 | |
| 3980 | // r0 = address of new object (tagged) |
| 3981 | // r1 = mapped parameter count (tagged) |
| 3982 | // r2 = argument count (tagged) |
| 3983 | // r4 = address of parameter map or backing store (tagged) |
| 3984 | // Initialize parameter map. If there are no mapped arguments, we're done. |
| 3985 | Label skip_parameter_map; |
| 3986 | __ cmp(r1, Operand(Smi::FromInt(0))); |
| 3987 | // Move backing store address to r3, because it is |
| 3988 | // expected there when filling in the unmapped arguments. |
| 3989 | __ mov(r3, r4, LeaveCC, eq); |
| 3990 | __ b(eq, &skip_parameter_map); |
| 3991 | |
| 3992 | __ LoadRoot(r6, Heap::kNonStrictArgumentsElementsMapRootIndex); |
| 3993 | __ str(r6, FieldMemOperand(r4, FixedArray::kMapOffset)); |
| 3994 | __ add(r6, r1, Operand(Smi::FromInt(2))); |
| 3995 | __ str(r6, FieldMemOperand(r4, FixedArray::kLengthOffset)); |
| 3996 | __ str(r8, FieldMemOperand(r4, FixedArray::kHeaderSize + 0 * kPointerSize)); |
| 3997 | __ add(r6, r4, Operand(r1, LSL, 1)); |
| 3998 | __ add(r6, r6, Operand(kParameterMapHeaderSize)); |
| 3999 | __ str(r6, FieldMemOperand(r4, FixedArray::kHeaderSize + 1 * kPointerSize)); |
| 4000 | |
| 4001 | // Copy the parameter slots and the holes in the arguments. |
| 4002 | // We need to fill in mapped_parameter_count slots. They index the context, |
| 4003 | // where parameters are stored in reverse order, at |
| 4004 | // MIN_CONTEXT_SLOTS .. MIN_CONTEXT_SLOTS+parameter_count-1 |
| 4005 | // The mapped parameter thus need to get indices |
| 4006 | // MIN_CONTEXT_SLOTS+parameter_count-1 .. |
| 4007 | // MIN_CONTEXT_SLOTS+parameter_count-mapped_parameter_count |
| 4008 | // We loop from right to left. |
| 4009 | Label parameters_loop, parameters_test; |
| 4010 | __ mov(r6, r1); |
| 4011 | __ ldr(r9, MemOperand(sp, 0 * kPointerSize)); |
| 4012 | __ add(r9, r9, Operand(Smi::FromInt(Context::MIN_CONTEXT_SLOTS))); |
| 4013 | __ sub(r9, r9, Operand(r1)); |
| 4014 | __ LoadRoot(r7, Heap::kTheHoleValueRootIndex); |
| 4015 | __ add(r3, r4, Operand(r6, LSL, 1)); |
| 4016 | __ add(r3, r3, Operand(kParameterMapHeaderSize)); |
| 4017 | |
| 4018 | // r6 = loop variable (tagged) |
| 4019 | // r1 = mapping index (tagged) |
| 4020 | // r3 = address of backing store (tagged) |
| 4021 | // r4 = address of parameter map (tagged) |
| 4022 | // r5 = temporary scratch (a.o., for address calculation) |
| 4023 | // r7 = the hole value |
| 4024 | __ jmp(¶meters_test); |
| 4025 | |
| 4026 | __ bind(¶meters_loop); |
| 4027 | __ sub(r6, r6, Operand(Smi::FromInt(1))); |
| 4028 | __ mov(r5, Operand(r6, LSL, 1)); |
| 4029 | __ add(r5, r5, Operand(kParameterMapHeaderSize - kHeapObjectTag)); |
| 4030 | __ str(r9, MemOperand(r4, r5)); |
| 4031 | __ sub(r5, r5, Operand(kParameterMapHeaderSize - FixedArray::kHeaderSize)); |
| 4032 | __ str(r7, MemOperand(r3, r5)); |
| 4033 | __ add(r9, r9, Operand(Smi::FromInt(1))); |
| 4034 | __ bind(¶meters_test); |
| 4035 | __ cmp(r6, Operand(Smi::FromInt(0))); |
| 4036 | __ b(ne, ¶meters_loop); |
| 4037 | |
| 4038 | __ bind(&skip_parameter_map); |
| 4039 | // r2 = argument count (tagged) |
| 4040 | // r3 = address of backing store (tagged) |
| 4041 | // r5 = scratch |
| 4042 | // Copy arguments header and remaining slots (if there are any). |
| 4043 | __ LoadRoot(r5, Heap::kFixedArrayMapRootIndex); |
| 4044 | __ str(r5, FieldMemOperand(r3, FixedArray::kMapOffset)); |
| 4045 | __ str(r2, FieldMemOperand(r3, FixedArray::kLengthOffset)); |
| 4046 | |
| 4047 | Label arguments_loop, arguments_test; |
| 4048 | __ mov(r9, r1); |
| 4049 | __ ldr(r4, MemOperand(sp, 1 * kPointerSize)); |
| 4050 | __ sub(r4, r4, Operand(r9, LSL, 1)); |
| 4051 | __ jmp(&arguments_test); |
| 4052 | |
| 4053 | __ bind(&arguments_loop); |
| 4054 | __ sub(r4, r4, Operand(kPointerSize)); |
| 4055 | __ ldr(r6, MemOperand(r4, 0)); |
| 4056 | __ add(r5, r3, Operand(r9, LSL, 1)); |
| 4057 | __ str(r6, FieldMemOperand(r5, FixedArray::kHeaderSize)); |
| 4058 | __ add(r9, r9, Operand(Smi::FromInt(1))); |
| 4059 | |
| 4060 | __ bind(&arguments_test); |
| 4061 | __ cmp(r9, Operand(r2)); |
| 4062 | __ b(lt, &arguments_loop); |
| 4063 | |
| 4064 | // Return and remove the on-stack parameters. |
| 4065 | __ add(sp, sp, Operand(3 * kPointerSize)); |
| 4066 | __ Ret(); |
| 4067 | |
| 4068 | // Do the runtime call to allocate the arguments object. |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4069 | // r2 = argument count (tagged) |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4070 | __ bind(&runtime); |
| 4071 | __ str(r2, MemOperand(sp, 0 * kPointerSize)); // Patch argument count. |
| 4072 | __ TailCallRuntime(Runtime::kNewArgumentsFast, 3, 1); |
| 4073 | } |
| 4074 | |
| 4075 | |
| 4076 | void ArgumentsAccessStub::GenerateNewStrict(MacroAssembler* masm) { |
| 4077 | // sp[0] : number of parameters |
| 4078 | // sp[4] : receiver displacement |
| 4079 | // sp[8] : function |
| 4080 | // Check if the calling frame is an arguments adaptor frame. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4081 | Label adaptor_frame, try_allocate, runtime; |
| 4082 | __ ldr(r2, MemOperand(fp, StandardFrameConstants::kCallerFPOffset)); |
| 4083 | __ ldr(r3, MemOperand(r2, StandardFrameConstants::kContextOffset)); |
| 4084 | __ cmp(r3, Operand(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 4085 | __ b(eq, &adaptor_frame); |
| 4086 | |
| 4087 | // Get the length from the frame. |
| 4088 | __ ldr(r1, MemOperand(sp, 0)); |
| 4089 | __ b(&try_allocate); |
| 4090 | |
| 4091 | // Patch the arguments.length and the parameters pointer. |
| 4092 | __ bind(&adaptor_frame); |
| 4093 | __ ldr(r1, MemOperand(r2, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 4094 | __ str(r1, MemOperand(sp, 0)); |
| 4095 | __ add(r3, r2, Operand(r1, LSL, kPointerSizeLog2 - kSmiTagSize)); |
| 4096 | __ add(r3, r3, Operand(StandardFrameConstants::kCallerSPOffset)); |
| 4097 | __ str(r3, MemOperand(sp, 1 * kPointerSize)); |
| 4098 | |
| 4099 | // Try the new space allocation. Start out with computing the size |
| 4100 | // of the arguments object and the elements array in words. |
| 4101 | Label add_arguments_object; |
| 4102 | __ bind(&try_allocate); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4103 | __ cmp(r1, Operand::Zero()); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4104 | __ b(eq, &add_arguments_object); |
| 4105 | __ mov(r1, Operand(r1, LSR, kSmiTagSize)); |
| 4106 | __ add(r1, r1, Operand(FixedArray::kHeaderSize / kPointerSize)); |
| 4107 | __ bind(&add_arguments_object); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4108 | __ add(r1, r1, Operand(Heap::kArgumentsObjectSizeStrict / kPointerSize)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4109 | |
| 4110 | // Do the allocation of both objects in one go. |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 4111 | __ Allocate(r1, r0, r2, r3, &runtime, |
| 4112 | static_cast<AllocationFlags>(TAG_OBJECT | SIZE_IN_WORDS)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4113 | |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4114 | // Get the arguments boilerplate from the current native context. |
| 4115 | __ ldr(r4, MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
| 4116 | __ ldr(r4, FieldMemOperand(r4, GlobalObject::kNativeContextOffset)); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4117 | __ ldr(r4, MemOperand(r4, Context::SlotOffset( |
| 4118 | Context::STRICT_MODE_ARGUMENTS_BOILERPLATE_INDEX))); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4119 | |
| 4120 | // Copy the JS object part. |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 4121 | __ CopyFields(r0, r4, d0, s0, JSObject::kHeaderSize / kPointerSize); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4122 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4123 | // Get the length (smi tagged) and set that as an in-object property too. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4124 | STATIC_ASSERT(Heap::kArgumentsLengthIndex == 0); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4125 | __ ldr(r1, MemOperand(sp, 0 * kPointerSize)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4126 | __ str(r1, FieldMemOperand(r0, JSObject::kHeaderSize + |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4127 | Heap::kArgumentsLengthIndex * kPointerSize)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4128 | |
| 4129 | // If there are no actual arguments, we're done. |
| 4130 | Label done; |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4131 | __ cmp(r1, Operand::Zero()); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4132 | __ b(eq, &done); |
| 4133 | |
| 4134 | // Get the parameters pointer from the stack. |
| 4135 | __ ldr(r2, MemOperand(sp, 1 * kPointerSize)); |
| 4136 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4137 | // Set up the elements pointer in the allocated arguments object and |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4138 | // initialize the header in the elements fixed array. |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4139 | __ add(r4, r0, Operand(Heap::kArgumentsObjectSizeStrict)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4140 | __ str(r4, FieldMemOperand(r0, JSObject::kElementsOffset)); |
| 4141 | __ LoadRoot(r3, Heap::kFixedArrayMapRootIndex); |
| 4142 | __ str(r3, FieldMemOperand(r4, FixedArray::kMapOffset)); |
| 4143 | __ str(r1, FieldMemOperand(r4, FixedArray::kLengthOffset)); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4144 | // Untag the length for the loop. |
| 4145 | __ mov(r1, Operand(r1, LSR, kSmiTagSize)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4146 | |
| 4147 | // Copy the fixed array slots. |
| 4148 | Label loop; |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4149 | // Set up r4 to point to the first array slot. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4150 | __ add(r4, r4, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 4151 | __ bind(&loop); |
| 4152 | // Pre-decrement r2 with kPointerSize on each iteration. |
| 4153 | // Pre-decrement in order to skip receiver. |
| 4154 | __ ldr(r3, MemOperand(r2, kPointerSize, NegPreIndex)); |
| 4155 | // Post-increment r4 with kPointerSize on each iteration. |
| 4156 | __ str(r3, MemOperand(r4, kPointerSize, PostIndex)); |
| 4157 | __ sub(r1, r1, Operand(1)); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4158 | __ cmp(r1, Operand::Zero()); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4159 | __ b(ne, &loop); |
| 4160 | |
| 4161 | // Return and remove the on-stack parameters. |
| 4162 | __ bind(&done); |
| 4163 | __ add(sp, sp, Operand(3 * kPointerSize)); |
| 4164 | __ Ret(); |
| 4165 | |
| 4166 | // Do the runtime call to allocate the arguments object. |
| 4167 | __ bind(&runtime); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4168 | __ TailCallRuntime(Runtime::kNewStrictArgumentsFast, 3, 1); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4169 | } |
| 4170 | |
| 4171 | |
| 4172 | void RegExpExecStub::Generate(MacroAssembler* masm) { |
| 4173 | // Just jump directly to runtime if native RegExp is not selected at compile |
| 4174 | // time or if regexp entry in generated code is turned off runtime switch or |
| 4175 | // at compilation. |
| 4176 | #ifdef V8_INTERPRETED_REGEXP |
| 4177 | __ TailCallRuntime(Runtime::kRegExpExec, 4, 1); |
| 4178 | #else // V8_INTERPRETED_REGEXP |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4179 | |
| 4180 | // Stack frame on entry. |
| 4181 | // sp[0]: last_match_info (expected JSArray) |
| 4182 | // sp[4]: previous index |
| 4183 | // sp[8]: subject string |
| 4184 | // sp[12]: JSRegExp object |
| 4185 | |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 4186 | const int kLastMatchInfoOffset = 0 * kPointerSize; |
| 4187 | const int kPreviousIndexOffset = 1 * kPointerSize; |
| 4188 | const int kSubjectOffset = 2 * kPointerSize; |
| 4189 | const int kJSRegExpOffset = 3 * kPointerSize; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4190 | |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4191 | Label runtime; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4192 | // Allocation of registers for this function. These are in callee save |
| 4193 | // registers and will be preserved by the call to the native RegExp code, as |
| 4194 | // this code is called using the normal C calling convention. When calling |
| 4195 | // directly from generated code the native RegExp code will not do a GC and |
| 4196 | // therefore the content of these registers are safe to use after the call. |
| 4197 | Register subject = r4; |
| 4198 | Register regexp_data = r5; |
| 4199 | Register last_match_info_elements = r6; |
| 4200 | |
| 4201 | // Ensure that a RegExp stack is allocated. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4202 | Isolate* isolate = masm->isolate(); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4203 | ExternalReference address_of_regexp_stack_memory_address = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4204 | ExternalReference::address_of_regexp_stack_memory_address(isolate); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4205 | ExternalReference address_of_regexp_stack_memory_size = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4206 | ExternalReference::address_of_regexp_stack_memory_size(isolate); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4207 | __ mov(r0, Operand(address_of_regexp_stack_memory_size)); |
| 4208 | __ ldr(r0, MemOperand(r0, 0)); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4209 | __ cmp(r0, Operand::Zero()); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4210 | __ b(eq, &runtime); |
| 4211 | |
| 4212 | // Check that the first argument is a JSRegExp object. |
| 4213 | __ ldr(r0, MemOperand(sp, kJSRegExpOffset)); |
| 4214 | STATIC_ASSERT(kSmiTag == 0); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4215 | __ JumpIfSmi(r0, &runtime); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4216 | __ CompareObjectType(r0, r1, r1, JS_REGEXP_TYPE); |
| 4217 | __ b(ne, &runtime); |
| 4218 | |
| 4219 | // Check that the RegExp has been compiled (data contains a fixed array). |
| 4220 | __ ldr(regexp_data, FieldMemOperand(r0, JSRegExp::kDataOffset)); |
| 4221 | if (FLAG_debug_code) { |
| 4222 | __ tst(regexp_data, Operand(kSmiTagMask)); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 4223 | __ Check(ne, "Unexpected type for RegExp data, FixedArray expected"); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4224 | __ CompareObjectType(regexp_data, r0, r0, FIXED_ARRAY_TYPE); |
| 4225 | __ Check(eq, "Unexpected type for RegExp data, FixedArray expected"); |
| 4226 | } |
| 4227 | |
| 4228 | // regexp_data: RegExp data (FixedArray) |
| 4229 | // Check the type of the RegExp. Only continue if type is JSRegExp::IRREGEXP. |
| 4230 | __ ldr(r0, FieldMemOperand(regexp_data, JSRegExp::kDataTagOffset)); |
| 4231 | __ cmp(r0, Operand(Smi::FromInt(JSRegExp::IRREGEXP))); |
| 4232 | __ b(ne, &runtime); |
| 4233 | |
| 4234 | // regexp_data: RegExp data (FixedArray) |
| 4235 | // Check that the number of captures fit in the static offsets vector buffer. |
| 4236 | __ ldr(r2, |
| 4237 | FieldMemOperand(regexp_data, JSRegExp::kIrregexpCaptureCountOffset)); |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4238 | // Check (number_of_captures + 1) * 2 <= offsets vector size |
| 4239 | // Or number_of_captures * 2 <= offsets vector size - 2 |
| 4240 | // Multiplying by 2 comes for free since r2 is smi-tagged. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4241 | STATIC_ASSERT(kSmiTag == 0); |
| 4242 | STATIC_ASSERT(kSmiTagSize + kSmiShiftSize == 1); |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4243 | STATIC_ASSERT(Isolate::kJSRegexpStaticOffsetsVectorSize >= 2); |
| 4244 | __ cmp(r2, Operand(Isolate::kJSRegexpStaticOffsetsVectorSize - 2)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4245 | __ b(hi, &runtime); |
| 4246 | |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 4247 | // Reset offset for possibly sliced string. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4248 | __ mov(r9, Operand::Zero()); |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4249 | __ ldr(subject, MemOperand(sp, kSubjectOffset)); |
| 4250 | __ JumpIfSmi(subject, &runtime); |
| 4251 | __ mov(r3, subject); // Make a copy of the original subject string. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4252 | __ ldr(r0, FieldMemOperand(subject, HeapObject::kMapOffset)); |
| 4253 | __ ldrb(r0, FieldMemOperand(r0, Map::kInstanceTypeOffset)); |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4254 | // subject: subject string |
| 4255 | // r3: subject string |
| 4256 | // r0: subject string instance type |
| 4257 | // regexp_data: RegExp data (FixedArray) |
| 4258 | // Handle subject string according to its encoding and representation: |
| 4259 | // (1) Sequential string? If yes, go to (5). |
| 4260 | // (2) Anything but sequential or cons? If yes, go to (6). |
| 4261 | // (3) Cons string. If the string is flat, replace subject with first string. |
| 4262 | // Otherwise bailout. |
| 4263 | // (4) Is subject external? If yes, go to (7). |
| 4264 | // (5) Sequential string. Load regexp code according to encoding. |
| 4265 | // (E) Carry on. |
| 4266 | /// [...] |
| 4267 | |
| 4268 | // Deferred code at the end of the stub: |
| 4269 | // (6) Not a long external string? If yes, go to (8). |
| 4270 | // (7) External string. Make it, offset-wise, look like a sequential string. |
| 4271 | // Go to (5). |
| 4272 | // (8) Short external string or not a string? If yes, bail out to runtime. |
| 4273 | // (9) Sliced string. Replace subject with parent. Go to (4). |
| 4274 | |
| 4275 | Label seq_string /* 5 */, external_string /* 7 */, |
| 4276 | check_underlying /* 4 */, not_seq_nor_cons /* 6 */, |
| 4277 | not_long_external /* 8 */; |
| 4278 | |
| 4279 | // (1) Sequential string? If yes, go to (5). |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4280 | __ and_(r1, |
| 4281 | r0, |
| 4282 | Operand(kIsNotStringMask | |
| 4283 | kStringRepresentationMask | |
| 4284 | kShortExternalStringMask), |
| 4285 | SetCC); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4286 | STATIC_ASSERT((kStringTag | kSeqStringTag) == 0); |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4287 | __ b(eq, &seq_string); // Go to (5). |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4288 | |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4289 | // (2) Anything but sequential or cons? If yes, go to (6). |
yangguo@chromium.org | 80c42ed | 2011-08-31 09:03:56 +0000 | [diff] [blame] | 4290 | STATIC_ASSERT(kConsStringTag < kExternalStringTag); |
| 4291 | STATIC_ASSERT(kSlicedStringTag > kExternalStringTag); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4292 | STATIC_ASSERT(kIsNotStringMask > kExternalStringTag); |
| 4293 | STATIC_ASSERT(kShortExternalStringTag > kExternalStringTag); |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 4294 | __ cmp(r1, Operand(kExternalStringTag)); |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4295 | __ b(ge, ¬_seq_nor_cons); // Go to (6). |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4296 | |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4297 | // (3) Cons string. Check that it's flat. |
| 4298 | // Replace subject with first string and reload instance type. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4299 | __ ldr(r0, FieldMemOperand(subject, ConsString::kSecondOffset)); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 4300 | __ CompareRoot(r0, Heap::kempty_stringRootIndex); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4301 | __ b(ne, &runtime); |
| 4302 | __ ldr(subject, FieldMemOperand(subject, ConsString::kFirstOffset)); |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4303 | |
| 4304 | // (4) Is subject external? If yes, go to (7). |
| 4305 | __ bind(&check_underlying); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4306 | __ ldr(r0, FieldMemOperand(subject, HeapObject::kMapOffset)); |
| 4307 | __ ldrb(r0, FieldMemOperand(r0, Map::kInstanceTypeOffset)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4308 | STATIC_ASSERT(kSeqStringTag == 0); |
| 4309 | __ tst(r0, Operand(kStringRepresentationMask)); |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4310 | // The underlying external string is never a short external string. |
| 4311 | STATIC_CHECK(ExternalString::kMaxShortLength < ConsString::kMinLength); |
| 4312 | STATIC_CHECK(ExternalString::kMaxShortLength < SlicedString::kMinLength); |
| 4313 | __ b(ne, &external_string); // Go to (7). |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4314 | |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4315 | // (5) Sequential string. Load regexp code according to encoding. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4316 | __ bind(&seq_string); |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4317 | // subject: sequential subject string (or look-alike, external string) |
| 4318 | // r3: original subject string |
| 4319 | // Load previous index and check range before r3 is overwritten. We have to |
| 4320 | // use r3 instead of subject here because subject might have been only made |
| 4321 | // to look like a sequential string when it actually is an external string. |
| 4322 | __ ldr(r1, MemOperand(sp, kPreviousIndexOffset)); |
| 4323 | __ JumpIfNotSmi(r1, &runtime); |
| 4324 | __ ldr(r3, FieldMemOperand(r3, String::kLengthOffset)); |
| 4325 | __ cmp(r3, Operand(r1)); |
| 4326 | __ b(ls, &runtime); |
| 4327 | __ mov(r1, Operand(r1, ASR, kSmiTagSize)); |
| 4328 | |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 4329 | STATIC_ASSERT(4 == kOneByteStringTag); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4330 | STATIC_ASSERT(kTwoByteStringTag == 0); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4331 | __ and_(r0, r0, Operand(kStringEncodingMask)); |
| 4332 | __ mov(r3, Operand(r0, ASR, 2), SetCC); |
| 4333 | __ ldr(r7, FieldMemOperand(regexp_data, JSRegExp::kDataAsciiCodeOffset), ne); |
| 4334 | __ ldr(r7, FieldMemOperand(regexp_data, JSRegExp::kDataUC16CodeOffset), eq); |
| 4335 | |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4336 | // (E) Carry on. String handling is done. |
| 4337 | // r7: irregexp code |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4338 | // Check that the irregexp code has been generated for the actual string |
| 4339 | // encoding. If it has, the field contains a code object otherwise it contains |
jkummerow@chromium.org | ddda9e8 | 2011-07-06 11:27:02 +0000 | [diff] [blame] | 4340 | // a smi (code flushing support). |
| 4341 | __ JumpIfSmi(r7, &runtime); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4342 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4343 | // r1: previous index |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 4344 | // r3: encoding of subject string (1 if ASCII, 0 if two_byte); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4345 | // r7: code |
| 4346 | // subject: Subject string |
| 4347 | // regexp_data: RegExp data (FixedArray) |
| 4348 | // All checks done. Now push arguments for native regexp code. |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 4349 | __ IncrementCounter(isolate->counters()->regexp_entry_native(), 1, r0, r2); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4350 | |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4351 | // Isolates: note we add an additional parameter here (isolate pointer). |
mstarzinger@chromium.org | 15613d0 | 2012-05-23 12:04:37 +0000 | [diff] [blame] | 4352 | const int kRegExpExecuteArguments = 9; |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 4353 | const int kParameterRegisters = 4; |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 4354 | __ EnterExitFrame(false, kRegExpExecuteArguments - kParameterRegisters); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4355 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 4356 | // Stack pointer now points to cell where return address is to be written. |
| 4357 | // Arguments are before that on the stack or in registers. |
| 4358 | |
mstarzinger@chromium.org | 15613d0 | 2012-05-23 12:04:37 +0000 | [diff] [blame] | 4359 | // Argument 9 (sp[20]): Pass current isolate address. |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 4360 | __ mov(r0, Operand(ExternalReference::isolate_address(isolate))); |
mstarzinger@chromium.org | 15613d0 | 2012-05-23 12:04:37 +0000 | [diff] [blame] | 4361 | __ str(r0, MemOperand(sp, 5 * kPointerSize)); |
| 4362 | |
| 4363 | // Argument 8 (sp[16]): Indicate that this is a direct call from JavaScript. |
| 4364 | __ mov(r0, Operand(1)); |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4365 | __ str(r0, MemOperand(sp, 4 * kPointerSize)); |
| 4366 | |
mstarzinger@chromium.org | 15613d0 | 2012-05-23 12:04:37 +0000 | [diff] [blame] | 4367 | // Argument 7 (sp[12]): Start (high end) of backtracking stack memory area. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4368 | __ mov(r0, Operand(address_of_regexp_stack_memory_address)); |
| 4369 | __ ldr(r0, MemOperand(r0, 0)); |
| 4370 | __ mov(r2, Operand(address_of_regexp_stack_memory_size)); |
| 4371 | __ ldr(r2, MemOperand(r2, 0)); |
| 4372 | __ add(r0, r0, Operand(r2)); |
mstarzinger@chromium.org | 15613d0 | 2012-05-23 12:04:37 +0000 | [diff] [blame] | 4373 | __ str(r0, MemOperand(sp, 3 * kPointerSize)); |
| 4374 | |
| 4375 | // Argument 6: Set the number of capture registers to zero to force global |
| 4376 | // regexps to behave as non-global. This does not affect non-global regexps. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4377 | __ mov(r0, Operand::Zero()); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 4378 | __ str(r0, MemOperand(sp, 2 * kPointerSize)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4379 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 4380 | // Argument 5 (sp[4]): static offsets vector buffer. |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4381 | __ mov(r0, |
| 4382 | Operand(ExternalReference::address_of_static_offsets_vector(isolate))); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 4383 | __ str(r0, MemOperand(sp, 1 * kPointerSize)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4384 | |
| 4385 | // For arguments 4 and 3 get string length, calculate start of string data and |
| 4386 | // calculate the shift of the index (0 for ASCII and 1 for two byte). |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4387 | __ add(r8, subject, Operand(SeqString::kHeaderSize - kHeapObjectTag)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4388 | __ eor(r3, r3, Operand(1)); |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 4389 | // Load the length from the original subject string from the previous stack |
| 4390 | // frame. Therefore we have to use fp, which points exactly to two pointer |
| 4391 | // sizes below the previous sp. (Because creating a new stack frame pushes |
| 4392 | // the previous fp onto the stack and moves up sp by 2 * kPointerSize.) |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 4393 | __ ldr(subject, MemOperand(fp, kSubjectOffset + 2 * kPointerSize)); |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 4394 | // If slice offset is not 0, load the length from the original sliced string. |
| 4395 | // Argument 4, r3: End of string data |
| 4396 | // Argument 3, r2: Start of string data |
| 4397 | // Prepare start and end index of the input. |
| 4398 | __ add(r9, r8, Operand(r9, LSL, r3)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4399 | __ add(r2, r9, Operand(r1, LSL, r3)); |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 4400 | |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 4401 | __ ldr(r8, FieldMemOperand(subject, String::kLengthOffset)); |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 4402 | __ mov(r8, Operand(r8, ASR, kSmiTagSize)); |
| 4403 | __ add(r3, r9, Operand(r8, LSL, r3)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4404 | |
| 4405 | // Argument 2 (r1): Previous index. |
| 4406 | // Already there |
| 4407 | |
| 4408 | // Argument 1 (r0): Subject string. |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 4409 | __ mov(r0, subject); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4410 | |
| 4411 | // Locate the code entry and call it. |
| 4412 | __ add(r7, r7, Operand(Code::kHeaderSize - kHeapObjectTag)); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 4413 | DirectCEntryStub stub; |
| 4414 | stub.GenerateCall(masm, r7); |
| 4415 | |
| 4416 | __ LeaveExitFrame(false, no_reg); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4417 | |
| 4418 | // r0: result |
| 4419 | // subject: subject string (callee saved) |
| 4420 | // regexp_data: RegExp data (callee saved) |
| 4421 | // last_match_info_elements: Last match info elements (callee saved) |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4422 | // Check the result. |
| 4423 | Label success; |
mstarzinger@chromium.org | 15613d0 | 2012-05-23 12:04:37 +0000 | [diff] [blame] | 4424 | __ cmp(r0, Operand(1)); |
| 4425 | // We expect exactly one result since we force the called regexp to behave |
| 4426 | // as non-global. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4427 | __ b(eq, &success); |
| 4428 | Label failure; |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 4429 | __ cmp(r0, Operand(NativeRegExpMacroAssembler::FAILURE)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4430 | __ b(eq, &failure); |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 4431 | __ cmp(r0, Operand(NativeRegExpMacroAssembler::EXCEPTION)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4432 | // If not exception it can only be retry. Handle that in the runtime system. |
| 4433 | __ b(ne, &runtime); |
| 4434 | // Result must now be exception. If there is no pending exception already a |
| 4435 | // stack overflow (on the backtrack stack) was detected in RegExp code but |
| 4436 | // haven't created the exception yet. Handle that in the runtime system. |
| 4437 | // TODO(592): Rerunning the RegExp to get the stack overflow exception. |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4438 | __ mov(r1, Operand(isolate->factory()->the_hole_value())); |
kmillikin@chromium.org | 83e1682 | 2011-09-13 08:21:47 +0000 | [diff] [blame] | 4439 | __ mov(r2, Operand(ExternalReference(Isolate::kPendingExceptionAddress, |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4440 | isolate))); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 4441 | __ ldr(r0, MemOperand(r2, 0)); |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 4442 | __ cmp(r0, r1); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4443 | __ b(eq, &runtime); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 4444 | |
| 4445 | __ str(r1, MemOperand(r2, 0)); // Clear pending exception. |
| 4446 | |
| 4447 | // Check if the exception is a termination. If so, throw as uncatchable. |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 4448 | __ CompareRoot(r0, Heap::kTerminationExceptionRootIndex); |
| 4449 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 4450 | Label termination_exception; |
| 4451 | __ b(eq, &termination_exception); |
| 4452 | |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 4453 | __ Throw(r0); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 4454 | |
| 4455 | __ bind(&termination_exception); |
ulan@chromium.org | 65a89c2 | 2012-02-14 11:46:07 +0000 | [diff] [blame] | 4456 | __ ThrowUncatchable(r0); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 4457 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4458 | __ bind(&failure); |
| 4459 | // For failure and exception return null. |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 4460 | __ mov(r0, Operand(masm->isolate()->factory()->null_value())); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4461 | __ add(sp, sp, Operand(4 * kPointerSize)); |
| 4462 | __ Ret(); |
| 4463 | |
| 4464 | // Process the result from the native regexp code. |
| 4465 | __ bind(&success); |
| 4466 | __ ldr(r1, |
| 4467 | FieldMemOperand(regexp_data, JSRegExp::kIrregexpCaptureCountOffset)); |
| 4468 | // Calculate number of capture registers (number_of_captures + 1) * 2. |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4469 | // Multiplying by 2 comes for free since r1 is smi-tagged. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4470 | STATIC_ASSERT(kSmiTag == 0); |
| 4471 | STATIC_ASSERT(kSmiTagSize + kSmiShiftSize == 1); |
| 4472 | __ add(r1, r1, Operand(2)); // r1 was a smi. |
| 4473 | |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4474 | __ ldr(r0, MemOperand(sp, kLastMatchInfoOffset)); |
| 4475 | __ JumpIfSmi(r0, &runtime); |
| 4476 | __ CompareObjectType(r0, r2, r2, JS_ARRAY_TYPE); |
| 4477 | __ b(ne, &runtime); |
| 4478 | // Check that the JSArray is in fast case. |
| 4479 | __ ldr(last_match_info_elements, |
| 4480 | FieldMemOperand(r0, JSArray::kElementsOffset)); |
| 4481 | __ ldr(r0, FieldMemOperand(last_match_info_elements, HeapObject::kMapOffset)); |
| 4482 | __ CompareRoot(r0, Heap::kFixedArrayMapRootIndex); |
| 4483 | __ b(ne, &runtime); |
| 4484 | // Check that the last match info has space for the capture registers and the |
| 4485 | // additional information. |
| 4486 | __ ldr(r0, |
| 4487 | FieldMemOperand(last_match_info_elements, FixedArray::kLengthOffset)); |
| 4488 | __ add(r2, r1, Operand(RegExpImpl::kLastMatchOverhead)); |
| 4489 | __ cmp(r2, Operand(r0, ASR, kSmiTagSize)); |
| 4490 | __ b(gt, &runtime); |
| 4491 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4492 | // r1: number of capture registers |
| 4493 | // r4: subject string |
| 4494 | // Store the capture count. |
| 4495 | __ mov(r2, Operand(r1, LSL, kSmiTagSize + kSmiShiftSize)); // To smi. |
| 4496 | __ str(r2, FieldMemOperand(last_match_info_elements, |
| 4497 | RegExpImpl::kLastCaptureCountOffset)); |
| 4498 | // Store last subject and last input. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4499 | __ str(subject, |
| 4500 | FieldMemOperand(last_match_info_elements, |
| 4501 | RegExpImpl::kLastSubjectOffset)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4502 | __ mov(r2, subject); |
| 4503 | __ RecordWriteField(last_match_info_elements, |
| 4504 | RegExpImpl::kLastSubjectOffset, |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4505 | subject, |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4506 | r7, |
| 4507 | kLRHasNotBeenSaved, |
| 4508 | kDontSaveFPRegs); |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4509 | __ mov(subject, r2); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4510 | __ str(subject, |
| 4511 | FieldMemOperand(last_match_info_elements, |
| 4512 | RegExpImpl::kLastInputOffset)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4513 | __ RecordWriteField(last_match_info_elements, |
| 4514 | RegExpImpl::kLastInputOffset, |
| 4515 | subject, |
| 4516 | r7, |
| 4517 | kLRHasNotBeenSaved, |
| 4518 | kDontSaveFPRegs); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4519 | |
| 4520 | // Get the static offsets vector filled by the native regexp code. |
| 4521 | ExternalReference address_of_static_offsets_vector = |
sgjesse@chromium.org | ea88ce9 | 2011-03-23 11:19:56 +0000 | [diff] [blame] | 4522 | ExternalReference::address_of_static_offsets_vector(isolate); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4523 | __ mov(r2, Operand(address_of_static_offsets_vector)); |
| 4524 | |
| 4525 | // r1: number of capture registers |
| 4526 | // r2: offsets vector |
| 4527 | Label next_capture, done; |
| 4528 | // Capture register counter starts from number of capture registers and |
| 4529 | // counts down until wraping after zero. |
| 4530 | __ add(r0, |
| 4531 | last_match_info_elements, |
| 4532 | Operand(RegExpImpl::kFirstCaptureOffset - kHeapObjectTag)); |
| 4533 | __ bind(&next_capture); |
| 4534 | __ sub(r1, r1, Operand(1), SetCC); |
| 4535 | __ b(mi, &done); |
| 4536 | // Read the value from the static offsets vector buffer. |
| 4537 | __ ldr(r3, MemOperand(r2, kPointerSize, PostIndex)); |
| 4538 | // Store the smi value in the last match info. |
| 4539 | __ mov(r3, Operand(r3, LSL, kSmiTagSize)); |
| 4540 | __ str(r3, MemOperand(r0, kPointerSize, PostIndex)); |
| 4541 | __ jmp(&next_capture); |
| 4542 | __ bind(&done); |
| 4543 | |
| 4544 | // Return last match info. |
| 4545 | __ ldr(r0, MemOperand(sp, kLastMatchInfoOffset)); |
| 4546 | __ add(sp, sp, Operand(4 * kPointerSize)); |
| 4547 | __ Ret(); |
| 4548 | |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4549 | // Do the runtime call to execute the regexp. |
| 4550 | __ bind(&runtime); |
| 4551 | __ TailCallRuntime(Runtime::kRegExpExec, 4, 1); |
| 4552 | |
| 4553 | // Deferred code for string handling. |
| 4554 | // (6) Not a long external string? If yes, go to (8). |
| 4555 | __ bind(¬_seq_nor_cons); |
| 4556 | // Compare flags are still set. |
| 4557 | __ b(gt, ¬_long_external); // Go to (8). |
| 4558 | |
| 4559 | // (7) External string. Make it, offset-wise, look like a sequential string. |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4560 | __ bind(&external_string); |
| 4561 | __ ldr(r0, FieldMemOperand(subject, HeapObject::kMapOffset)); |
| 4562 | __ ldrb(r0, FieldMemOperand(r0, Map::kInstanceTypeOffset)); |
| 4563 | if (FLAG_debug_code) { |
| 4564 | // Assert that we do not have a cons or slice (indirect strings) here. |
| 4565 | // Sequential strings have already been ruled out. |
| 4566 | __ tst(r0, Operand(kIsIndirectStringMask)); |
| 4567 | __ Assert(eq, "external string expected, but not found"); |
| 4568 | } |
| 4569 | __ ldr(subject, |
| 4570 | FieldMemOperand(subject, ExternalString::kResourceDataOffset)); |
| 4571 | // Move the pointer so that offset-wise, it looks like a sequential string. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 4572 | STATIC_ASSERT(SeqTwoByteString::kHeaderSize == SeqOneByteString::kHeaderSize); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4573 | __ sub(subject, |
| 4574 | subject, |
| 4575 | Operand(SeqTwoByteString::kHeaderSize - kHeapObjectTag)); |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4576 | __ jmp(&seq_string); // Go to (5). |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4577 | |
mstarzinger@chromium.org | 71fc346 | 2013-02-27 09:34:27 +0000 | [diff] [blame] | 4578 | // (8) Short external string or not a string? If yes, bail out to runtime. |
| 4579 | __ bind(¬_long_external); |
| 4580 | STATIC_ASSERT(kNotStringTag != 0 && kShortExternalStringTag !=0); |
| 4581 | __ tst(r1, Operand(kIsNotStringMask | kShortExternalStringMask)); |
| 4582 | __ b(ne, &runtime); |
| 4583 | |
| 4584 | // (9) Sliced string. Replace subject with parent. Go to (4). |
| 4585 | // Load offset into r9 and replace subject string with parent. |
| 4586 | __ ldr(r9, FieldMemOperand(subject, SlicedString::kOffsetOffset)); |
| 4587 | __ mov(r9, Operand(r9, ASR, kSmiTagSize)); |
| 4588 | __ ldr(subject, FieldMemOperand(subject, SlicedString::kParentOffset)); |
| 4589 | __ jmp(&check_underlying); // Go to (4). |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4590 | #endif // V8_INTERPRETED_REGEXP |
| 4591 | } |
| 4592 | |
| 4593 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4594 | void RegExpConstructResultStub::Generate(MacroAssembler* masm) { |
| 4595 | const int kMaxInlineLength = 100; |
| 4596 | Label slowcase; |
| 4597 | Label done; |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 4598 | Factory* factory = masm->isolate()->factory(); |
| 4599 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4600 | __ ldr(r1, MemOperand(sp, kPointerSize * 2)); |
| 4601 | STATIC_ASSERT(kSmiTag == 0); |
| 4602 | STATIC_ASSERT(kSmiTagSize == 1); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 4603 | __ JumpIfNotSmi(r1, &slowcase); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4604 | __ cmp(r1, Operand(Smi::FromInt(kMaxInlineLength))); |
| 4605 | __ b(hi, &slowcase); |
| 4606 | // Smi-tagging is equivalent to multiplying by 2. |
| 4607 | // Allocate RegExpResult followed by FixedArray with size in ebx. |
| 4608 | // JSArray: [Map][empty properties][Elements][Length-smi][index][input] |
| 4609 | // Elements: [Map][Length][..elements..] |
| 4610 | // Size of JSArray with two in-object properties and the header of a |
| 4611 | // FixedArray. |
| 4612 | int objects_size = |
| 4613 | (JSRegExpResult::kSize + FixedArray::kHeaderSize) / kPointerSize; |
| 4614 | __ mov(r5, Operand(r1, LSR, kSmiTagSize + kSmiShiftSize)); |
| 4615 | __ add(r2, r5, Operand(objects_size)); |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 4616 | __ Allocate( |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4617 | r2, // In: Size, in words. |
| 4618 | r0, // Out: Start of allocation (tagged). |
| 4619 | r3, // Scratch register. |
| 4620 | r4, // Scratch register. |
| 4621 | &slowcase, |
| 4622 | static_cast<AllocationFlags>(TAG_OBJECT | SIZE_IN_WORDS)); |
| 4623 | // r0: Start of allocated area, object-tagged. |
| 4624 | // r1: Number of elements in array, as smi. |
| 4625 | // r5: Number of elements, untagged. |
| 4626 | |
| 4627 | // Set JSArray map to global.regexp_result_map(). |
| 4628 | // Set empty properties FixedArray. |
| 4629 | // Set elements to point to FixedArray allocated right after the JSArray. |
| 4630 | // Interleave operations for better latency. |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4631 | __ ldr(r2, ContextOperand(cp, Context::GLOBAL_OBJECT_INDEX)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4632 | __ add(r3, r0, Operand(JSRegExpResult::kSize)); |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 4633 | __ mov(r4, Operand(factory->empty_fixed_array())); |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4634 | __ ldr(r2, FieldMemOperand(r2, GlobalObject::kNativeContextOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4635 | __ str(r3, FieldMemOperand(r0, JSObject::kElementsOffset)); |
| 4636 | __ ldr(r2, ContextOperand(r2, Context::REGEXP_RESULT_MAP_INDEX)); |
| 4637 | __ str(r4, FieldMemOperand(r0, JSObject::kPropertiesOffset)); |
| 4638 | __ str(r2, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 4639 | |
| 4640 | // Set input, index and length fields from arguments. |
| 4641 | __ ldr(r1, MemOperand(sp, kPointerSize * 0)); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4642 | __ ldr(r2, MemOperand(sp, kPointerSize * 1)); |
| 4643 | __ ldr(r6, MemOperand(sp, kPointerSize * 2)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4644 | __ str(r1, FieldMemOperand(r0, JSRegExpResult::kInputOffset)); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4645 | __ str(r2, FieldMemOperand(r0, JSRegExpResult::kIndexOffset)); |
| 4646 | __ str(r6, FieldMemOperand(r0, JSArray::kLengthOffset)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4647 | |
| 4648 | // Fill out the elements FixedArray. |
| 4649 | // r0: JSArray, tagged. |
| 4650 | // r3: FixedArray, tagged. |
| 4651 | // r5: Number of elements in array, untagged. |
| 4652 | |
| 4653 | // Set map. |
danno@chromium.org | 160a7b0 | 2011-04-18 15:51:38 +0000 | [diff] [blame] | 4654 | __ mov(r2, Operand(factory->fixed_array_map())); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4655 | __ str(r2, FieldMemOperand(r3, HeapObject::kMapOffset)); |
| 4656 | // Set FixedArray length. |
| 4657 | __ mov(r6, Operand(r5, LSL, kSmiTagSize)); |
| 4658 | __ str(r6, FieldMemOperand(r3, FixedArray::kLengthOffset)); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4659 | // Fill contents of fixed-array with undefined. |
| 4660 | __ LoadRoot(r2, Heap::kUndefinedValueRootIndex); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4661 | __ add(r3, r3, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4662 | // Fill fixed array elements with undefined. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4663 | // r0: JSArray, tagged. |
ulan@chromium.org | 56c14af | 2012-09-20 12:51:09 +0000 | [diff] [blame] | 4664 | // r2: undefined. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4665 | // r3: Start of elements in FixedArray. |
| 4666 | // r5: Number of elements to fill. |
| 4667 | Label loop; |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4668 | __ cmp(r5, Operand::Zero()); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4669 | __ bind(&loop); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4670 | __ b(le, &done); // Jump if r5 is negative or zero. |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 4671 | __ sub(r5, r5, Operand(1), SetCC); |
| 4672 | __ str(r2, MemOperand(r3, r5, LSL, kPointerSizeLog2)); |
| 4673 | __ jmp(&loop); |
| 4674 | |
| 4675 | __ bind(&done); |
| 4676 | __ add(sp, sp, Operand(3 * kPointerSize)); |
| 4677 | __ Ret(); |
| 4678 | |
| 4679 | __ bind(&slowcase); |
| 4680 | __ TailCallRuntime(Runtime::kRegExpConstructResult, 3, 1); |
| 4681 | } |
| 4682 | |
| 4683 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 4684 | static void GenerateRecordCallTargetNoArray(MacroAssembler* masm) { |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4685 | // Cache the called function in a global property cell. Cache states |
| 4686 | // are uninitialized, monomorphic (indicated by a JSFunction), and |
| 4687 | // megamorphic. |
| 4688 | // r1 : the function to call |
| 4689 | // r2 : cache cell for call target |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 4690 | ASSERT(!FLAG_optimize_constructed_arrays); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4691 | Label done; |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4692 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4693 | ASSERT_EQ(*TypeFeedbackCells::MegamorphicSentinel(masm->isolate()), |
| 4694 | masm->isolate()->heap()->undefined_value()); |
| 4695 | ASSERT_EQ(*TypeFeedbackCells::UninitializedSentinel(masm->isolate()), |
| 4696 | masm->isolate()->heap()->the_hole_value()); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4697 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4698 | // Load the cache state into r3. |
| 4699 | __ ldr(r3, FieldMemOperand(r2, JSGlobalPropertyCell::kValueOffset)); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4700 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4701 | // A monomorphic cache hit or an already megamorphic state: invoke the |
| 4702 | // function without changing the state. |
| 4703 | __ cmp(r3, r1); |
| 4704 | __ b(eq, &done); |
| 4705 | __ CompareRoot(r3, Heap::kUndefinedValueRootIndex); |
| 4706 | __ b(eq, &done); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4707 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4708 | // A monomorphic miss (i.e, here the cache is not uninitialized) goes |
| 4709 | // megamorphic. |
| 4710 | __ CompareRoot(r3, Heap::kTheHoleValueRootIndex); |
| 4711 | // MegamorphicSentinel is an immortal immovable object (undefined) so no |
| 4712 | // write-barrier is needed. |
| 4713 | __ LoadRoot(ip, Heap::kUndefinedValueRootIndex, ne); |
| 4714 | __ str(ip, FieldMemOperand(r2, JSGlobalPropertyCell::kValueOffset), ne); |
| 4715 | |
| 4716 | // An uninitialized cache is patched with the function. |
| 4717 | __ str(r1, FieldMemOperand(r2, JSGlobalPropertyCell::kValueOffset), eq); |
| 4718 | // No need for a write barrier here - cells are rescanned. |
| 4719 | |
| 4720 | __ bind(&done); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 4721 | } |
| 4722 | |
| 4723 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 4724 | static void GenerateRecordCallTarget(MacroAssembler* masm) { |
| 4725 | // Cache the called function in a global property cell. Cache states |
| 4726 | // are uninitialized, monomorphic (indicated by a JSFunction), and |
| 4727 | // megamorphic. |
| 4728 | // r1 : the function to call |
| 4729 | // r2 : cache cell for call target |
| 4730 | ASSERT(FLAG_optimize_constructed_arrays); |
| 4731 | Label initialize, done, miss, megamorphic, not_array_function; |
| 4732 | |
| 4733 | ASSERT_EQ(*TypeFeedbackCells::MegamorphicSentinel(masm->isolate()), |
| 4734 | masm->isolate()->heap()->undefined_value()); |
| 4735 | ASSERT_EQ(*TypeFeedbackCells::UninitializedSentinel(masm->isolate()), |
| 4736 | masm->isolate()->heap()->the_hole_value()); |
| 4737 | |
| 4738 | // Load the cache state into r3. |
| 4739 | __ ldr(r3, FieldMemOperand(r2, JSGlobalPropertyCell::kValueOffset)); |
| 4740 | |
| 4741 | // A monomorphic cache hit or an already megamorphic state: invoke the |
| 4742 | // function without changing the state. |
| 4743 | __ cmp(r3, r1); |
| 4744 | __ b(eq, &done); |
| 4745 | __ CompareRoot(r3, Heap::kUndefinedValueRootIndex); |
| 4746 | __ b(eq, &done); |
| 4747 | |
| 4748 | // Special handling of the Array() function, which caches not only the |
| 4749 | // monomorphic Array function but the initial ElementsKind with special |
| 4750 | // sentinels |
| 4751 | Handle<Object> terminal_kind_sentinel = |
| 4752 | TypeFeedbackCells::MonomorphicArraySentinel(masm->isolate(), |
| 4753 | LAST_FAST_ELEMENTS_KIND); |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 4754 | __ JumpIfNotSmi(r3, &miss); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 4755 | __ cmp(r3, Operand(terminal_kind_sentinel)); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 4756 | __ b(gt, &miss); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 4757 | // Make sure the function is the Array() function |
| 4758 | __ LoadArrayFunction(r3); |
| 4759 | __ cmp(r1, r3); |
| 4760 | __ b(ne, &megamorphic); |
| 4761 | __ jmp(&done); |
| 4762 | |
| 4763 | __ bind(&miss); |
| 4764 | |
| 4765 | // A monomorphic miss (i.e, here the cache is not uninitialized) goes |
| 4766 | // megamorphic. |
| 4767 | __ CompareRoot(r3, Heap::kTheHoleValueRootIndex); |
| 4768 | __ b(eq, &initialize); |
| 4769 | // MegamorphicSentinel is an immortal immovable object (undefined) so no |
| 4770 | // write-barrier is needed. |
| 4771 | __ bind(&megamorphic); |
| 4772 | __ LoadRoot(ip, Heap::kUndefinedValueRootIndex); |
| 4773 | __ str(ip, FieldMemOperand(r2, JSGlobalPropertyCell::kValueOffset)); |
| 4774 | |
| 4775 | // An uninitialized cache is patched with the function or sentinel to |
| 4776 | // indicate the ElementsKind if function is the Array constructor. |
| 4777 | __ bind(&initialize); |
| 4778 | // Make sure the function is the Array() function |
| 4779 | __ LoadArrayFunction(r3); |
| 4780 | __ cmp(r1, r3); |
| 4781 | __ b(ne, ¬_array_function); |
| 4782 | |
| 4783 | // The target function is the Array constructor, install a sentinel value in |
| 4784 | // the constructor's type info cell that will track the initial ElementsKind |
| 4785 | // that should be used for the array when its constructed. |
| 4786 | Handle<Object> initial_kind_sentinel = |
| 4787 | TypeFeedbackCells::MonomorphicArraySentinel(masm->isolate(), |
| 4788 | GetInitialFastElementsKind()); |
| 4789 | __ mov(r3, Operand(initial_kind_sentinel)); |
| 4790 | __ str(r3, FieldMemOperand(r2, JSGlobalPropertyCell::kValueOffset)); |
| 4791 | __ b(&done); |
| 4792 | |
| 4793 | __ bind(¬_array_function); |
| 4794 | __ str(r1, FieldMemOperand(r2, JSGlobalPropertyCell::kValueOffset)); |
| 4795 | // No need for a write barrier here - cells are rescanned. |
| 4796 | |
| 4797 | __ bind(&done); |
| 4798 | } |
| 4799 | |
| 4800 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4801 | void CallFunctionStub::Generate(MacroAssembler* masm) { |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 4802 | // r1 : the function to call |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4803 | // r2 : cache cell for call target |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 4804 | Label slow, non_function; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4805 | |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 4806 | // The receiver might implicitly be the global object. This is |
| 4807 | // indicated by passing the hole as the receiver to the call |
| 4808 | // function stub. |
| 4809 | if (ReceiverMightBeImplicit()) { |
| 4810 | Label call; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4811 | // Get the receiver from the stack. |
| 4812 | // function, receiver [, arguments] |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 4813 | __ ldr(r4, MemOperand(sp, argc_ * kPointerSize)); |
| 4814 | // Call as function is indicated with the hole. |
| 4815 | __ CompareRoot(r4, Heap::kTheHoleValueRootIndex); |
| 4816 | __ b(ne, &call); |
| 4817 | // Patch the receiver on the stack with the global receiver object. |
yangguo@chromium.org | 46839fb | 2012-08-28 09:06:19 +0000 | [diff] [blame] | 4818 | __ ldr(r3, |
| 4819 | MemOperand(cp, Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX))); |
mstarzinger@chromium.org | 88d326b | 2012-04-23 12:57:22 +0000 | [diff] [blame] | 4820 | __ ldr(r3, FieldMemOperand(r3, GlobalObject::kGlobalReceiverOffset)); |
| 4821 | __ str(r3, MemOperand(sp, argc_ * kPointerSize)); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 4822 | __ bind(&call); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4823 | } |
| 4824 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4825 | // Check that the function is really a JavaScript function. |
| 4826 | // r1: pushed function (to be verified) |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 4827 | __ JumpIfSmi(r1, &non_function); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4828 | // Get the map of the function object. |
mstarzinger@chromium.org | 88d326b | 2012-04-23 12:57:22 +0000 | [diff] [blame] | 4829 | __ CompareObjectType(r1, r3, r3, JS_FUNCTION_TYPE); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4830 | __ b(ne, &slow); |
| 4831 | |
mstarzinger@chromium.org | 88d326b | 2012-04-23 12:57:22 +0000 | [diff] [blame] | 4832 | if (RecordCallTarget()) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 4833 | if (FLAG_optimize_constructed_arrays) { |
| 4834 | GenerateRecordCallTarget(masm); |
| 4835 | } else { |
| 4836 | GenerateRecordCallTargetNoArray(masm); |
| 4837 | } |
mstarzinger@chromium.org | 88d326b | 2012-04-23 12:57:22 +0000 | [diff] [blame] | 4838 | } |
| 4839 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4840 | // Fast-case: Invoke the function now. |
| 4841 | // r1: pushed function |
| 4842 | ParameterCount actual(argc_); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 4843 | |
| 4844 | if (ReceiverMightBeImplicit()) { |
| 4845 | Label call_as_function; |
| 4846 | __ CompareRoot(r4, Heap::kTheHoleValueRootIndex); |
| 4847 | __ b(eq, &call_as_function); |
ricow@chromium.org | d2be901 | 2011-06-01 06:00:58 +0000 | [diff] [blame] | 4848 | __ InvokeFunction(r1, |
| 4849 | actual, |
| 4850 | JUMP_FUNCTION, |
| 4851 | NullCallWrapper(), |
| 4852 | CALL_AS_METHOD); |
danno@chromium.org | 40cb878 | 2011-05-25 07:58:50 +0000 | [diff] [blame] | 4853 | __ bind(&call_as_function); |
| 4854 | } |
| 4855 | __ InvokeFunction(r1, |
| 4856 | actual, |
| 4857 | JUMP_FUNCTION, |
| 4858 | NullCallWrapper(), |
| 4859 | CALL_AS_FUNCTION); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4860 | |
| 4861 | // Slow-case: Non-function called. |
| 4862 | __ bind(&slow); |
mstarzinger@chromium.org | 88d326b | 2012-04-23 12:57:22 +0000 | [diff] [blame] | 4863 | if (RecordCallTarget()) { |
| 4864 | // If there is a call target cache, mark it megamorphic in the |
| 4865 | // non-function case. MegamorphicSentinel is an immortal immovable |
| 4866 | // object (undefined) so no write barrier is needed. |
| 4867 | ASSERT_EQ(*TypeFeedbackCells::MegamorphicSentinel(masm->isolate()), |
| 4868 | masm->isolate()->heap()->undefined_value()); |
| 4869 | __ LoadRoot(ip, Heap::kUndefinedValueRootIndex); |
| 4870 | __ str(ip, FieldMemOperand(r2, JSGlobalPropertyCell::kValueOffset)); |
| 4871 | } |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 4872 | // Check for function proxy. |
mstarzinger@chromium.org | 88d326b | 2012-04-23 12:57:22 +0000 | [diff] [blame] | 4873 | __ cmp(r3, Operand(JS_FUNCTION_PROXY_TYPE)); |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 4874 | __ b(ne, &non_function); |
| 4875 | __ push(r1); // put proxy as additional argument |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4876 | __ mov(r0, Operand(argc_ + 1, RelocInfo::NONE32)); |
| 4877 | __ mov(r2, Operand::Zero()); |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 4878 | __ GetBuiltinEntry(r3, Builtins::CALL_FUNCTION_PROXY); |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 4879 | __ SetCallKind(r5, CALL_AS_METHOD); |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 4880 | { |
| 4881 | Handle<Code> adaptor = |
| 4882 | masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(); |
| 4883 | __ Jump(adaptor, RelocInfo::CODE_TARGET); |
| 4884 | } |
| 4885 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4886 | // CALL_NON_FUNCTION expects the non-function callee as receiver (instead |
| 4887 | // of the original receiver from the call site). |
lrn@chromium.org | 34e6078 | 2011-09-15 07:25:40 +0000 | [diff] [blame] | 4888 | __ bind(&non_function); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4889 | __ str(r1, MemOperand(sp, argc_ * kPointerSize)); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 4890 | __ mov(r0, Operand(argc_)); // Set up the number of arguments. |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4891 | __ mov(r2, Operand::Zero()); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4892 | __ GetBuiltinEntry(r3, Builtins::CALL_NON_FUNCTION); |
rossberg@chromium.org | 717967f | 2011-07-20 13:44:42 +0000 | [diff] [blame] | 4893 | __ SetCallKind(r5, CALL_AS_METHOD); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 4894 | __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4895 | RelocInfo::CODE_TARGET); |
| 4896 | } |
| 4897 | |
| 4898 | |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4899 | void CallConstructStub::Generate(MacroAssembler* masm) { |
| 4900 | // r0 : number of arguments |
| 4901 | // r1 : the function to call |
| 4902 | // r2 : cache cell for call target |
| 4903 | Label slow, non_function_call; |
| 4904 | |
| 4905 | // Check that the function is not a smi. |
| 4906 | __ JumpIfSmi(r1, &non_function_call); |
| 4907 | // Check that the function is a JSFunction. |
| 4908 | __ CompareObjectType(r1, r3, r3, JS_FUNCTION_TYPE); |
| 4909 | __ b(ne, &slow); |
| 4910 | |
| 4911 | if (RecordCallTarget()) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 4912 | if (FLAG_optimize_constructed_arrays) { |
| 4913 | GenerateRecordCallTarget(masm); |
| 4914 | } else { |
| 4915 | GenerateRecordCallTargetNoArray(masm); |
| 4916 | } |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4917 | } |
| 4918 | |
| 4919 | // Jump to the function-specific construct stub. |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 4920 | Register jmp_reg = FLAG_optimize_constructed_arrays ? r3 : r2; |
| 4921 | __ ldr(jmp_reg, FieldMemOperand(r1, JSFunction::kSharedFunctionInfoOffset)); |
| 4922 | __ ldr(jmp_reg, FieldMemOperand(jmp_reg, |
| 4923 | SharedFunctionInfo::kConstructStubOffset)); |
| 4924 | __ add(pc, jmp_reg, Operand(Code::kHeaderSize - kHeapObjectTag)); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4925 | |
| 4926 | // r0: number of arguments |
| 4927 | // r1: called object |
| 4928 | // r3: object type |
| 4929 | Label do_call; |
| 4930 | __ bind(&slow); |
| 4931 | __ cmp(r3, Operand(JS_FUNCTION_PROXY_TYPE)); |
| 4932 | __ b(ne, &non_function_call); |
| 4933 | __ GetBuiltinEntry(r3, Builtins::CALL_FUNCTION_PROXY_AS_CONSTRUCTOR); |
| 4934 | __ jmp(&do_call); |
| 4935 | |
| 4936 | __ bind(&non_function_call); |
| 4937 | __ GetBuiltinEntry(r3, Builtins::CALL_NON_FUNCTION_AS_CONSTRUCTOR); |
| 4938 | __ bind(&do_call); |
| 4939 | // Set expected number of arguments to zero (not changing r0). |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 4940 | __ mov(r2, Operand::Zero()); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 4941 | __ SetCallKind(r5, CALL_AS_METHOD); |
| 4942 | __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
| 4943 | RelocInfo::CODE_TARGET); |
| 4944 | } |
| 4945 | |
| 4946 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4947 | // StringCharCodeAtGenerator |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4948 | void StringCharCodeAtGenerator::GenerateFast(MacroAssembler* masm) { |
| 4949 | Label flat_string; |
| 4950 | Label ascii_string; |
| 4951 | Label got_char_code; |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 4952 | Label sliced_string; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4953 | |
| 4954 | // If the receiver is a smi trigger the non-string case. |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 4955 | __ JumpIfSmi(object_, receiver_not_string_); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4956 | |
| 4957 | // Fetch the instance type of the receiver into result register. |
| 4958 | __ ldr(result_, FieldMemOperand(object_, HeapObject::kMapOffset)); |
| 4959 | __ ldrb(result_, FieldMemOperand(result_, Map::kInstanceTypeOffset)); |
| 4960 | // If the receiver is not a string trigger the non-string case. |
| 4961 | __ tst(result_, Operand(kIsNotStringMask)); |
| 4962 | __ b(ne, receiver_not_string_); |
| 4963 | |
| 4964 | // If the index is non-smi trigger the non-smi case. |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 4965 | __ JumpIfNotSmi(index_, &index_not_smi_); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4966 | __ bind(&got_smi_index_); |
| 4967 | |
| 4968 | // Check for index out of range. |
| 4969 | __ ldr(ip, FieldMemOperand(object_, String::kLengthOffset)); |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 4970 | __ cmp(ip, Operand(index_)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4971 | __ b(ls, index_out_of_range_); |
| 4972 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4973 | __ mov(index_, Operand(index_, ASR, kSmiTagSize)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4974 | |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 4975 | StringCharLoadGenerator::Generate(masm, |
| 4976 | object_, |
| 4977 | index_, |
| 4978 | result_, |
| 4979 | &call_runtime_); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4980 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4981 | __ mov(result_, Operand(result_, LSL, kSmiTagSize)); |
| 4982 | __ bind(&exit_); |
| 4983 | } |
| 4984 | |
| 4985 | |
| 4986 | void StringCharCodeAtGenerator::GenerateSlow( |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 4987 | MacroAssembler* masm, |
| 4988 | const RuntimeCallHelper& call_helper) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4989 | __ Abort("Unexpected fallthrough to CharCodeAt slow case"); |
| 4990 | |
| 4991 | // Index is not a smi. |
| 4992 | __ bind(&index_not_smi_); |
| 4993 | // If index is a heap number, try converting it to an integer. |
| 4994 | __ CheckMap(index_, |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 4995 | result_, |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4996 | Heap::kHeapNumberMapRootIndex, |
| 4997 | index_not_number_, |
kmillikin@chromium.org | c53e10d | 2011-05-18 09:12:58 +0000 | [diff] [blame] | 4998 | DONT_DO_SMI_CHECK); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 4999 | call_helper.BeforeCall(masm); |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 5000 | __ push(object_); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5001 | __ push(index_); // Consumed by runtime conversion function. |
| 5002 | if (index_flags_ == STRING_INDEX_IS_NUMBER) { |
| 5003 | __ CallRuntime(Runtime::kNumberToIntegerMapMinusZero, 1); |
| 5004 | } else { |
| 5005 | ASSERT(index_flags_ == STRING_INDEX_IS_ARRAY_INDEX); |
| 5006 | // NumberToSmi discards numbers that are not exact integers. |
| 5007 | __ CallRuntime(Runtime::kNumberToSmi, 1); |
| 5008 | } |
| 5009 | // Save the conversion result before the pop instructions below |
| 5010 | // have a chance to overwrite it. |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 5011 | __ Move(index_, r0); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5012 | __ pop(object_); |
| 5013 | // Reload the instance type. |
| 5014 | __ ldr(result_, FieldMemOperand(object_, HeapObject::kMapOffset)); |
| 5015 | __ ldrb(result_, FieldMemOperand(result_, Map::kInstanceTypeOffset)); |
| 5016 | call_helper.AfterCall(masm); |
| 5017 | // If index is still not a smi, it must be out of range. |
danno@chromium.org | c612e02 | 2011-11-10 11:38:15 +0000 | [diff] [blame] | 5018 | __ JumpIfNotSmi(index_, index_out_of_range_); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5019 | // Otherwise, return to the fast path. |
| 5020 | __ jmp(&got_smi_index_); |
| 5021 | |
| 5022 | // Call runtime. We get here when the receiver is a string and the |
| 5023 | // index is a number, but the code of getting the actual character |
| 5024 | // is too complex (e.g., when the string needs to be flattened). |
| 5025 | __ bind(&call_runtime_); |
| 5026 | call_helper.BeforeCall(masm); |
mstarzinger@chromium.org | 1b3afd1 | 2011-11-29 14:28:56 +0000 | [diff] [blame] | 5027 | __ mov(index_, Operand(index_, LSL, kSmiTagSize)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5028 | __ Push(object_, index_); |
| 5029 | __ CallRuntime(Runtime::kStringCharCodeAt, 2); |
| 5030 | __ Move(result_, r0); |
| 5031 | call_helper.AfterCall(masm); |
| 5032 | __ jmp(&exit_); |
| 5033 | |
| 5034 | __ Abort("Unexpected fallthrough from CharCodeAt slow case"); |
| 5035 | } |
| 5036 | |
| 5037 | |
| 5038 | // ------------------------------------------------------------------------- |
| 5039 | // StringCharFromCodeGenerator |
| 5040 | |
| 5041 | void StringCharFromCodeGenerator::GenerateFast(MacroAssembler* masm) { |
| 5042 | // Fast case of Heap::LookupSingleCharacterStringFromCode. |
| 5043 | STATIC_ASSERT(kSmiTag == 0); |
| 5044 | STATIC_ASSERT(kSmiShiftSize == 0); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5045 | ASSERT(IsPowerOf2(String::kMaxOneByteCharCode + 1)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5046 | __ tst(code_, |
| 5047 | Operand(kSmiTagMask | |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5048 | ((~String::kMaxOneByteCharCode) << kSmiTagSize))); |
ager@chromium.org | 378b34e | 2011-01-28 08:04:38 +0000 | [diff] [blame] | 5049 | __ b(ne, &slow_case_); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5050 | |
| 5051 | __ LoadRoot(result_, Heap::kSingleCharacterStringCacheRootIndex); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 5052 | // At this point code register contains smi tagged ASCII char code. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5053 | STATIC_ASSERT(kSmiTag == 0); |
| 5054 | __ add(result_, result_, Operand(code_, LSL, kPointerSizeLog2 - kSmiTagSize)); |
| 5055 | __ ldr(result_, FieldMemOperand(result_, FixedArray::kHeaderSize)); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 5056 | __ CompareRoot(result_, Heap::kUndefinedValueRootIndex); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5057 | __ b(eq, &slow_case_); |
| 5058 | __ bind(&exit_); |
| 5059 | } |
| 5060 | |
| 5061 | |
| 5062 | void StringCharFromCodeGenerator::GenerateSlow( |
jkummerow@chromium.org | c3b3712 | 2011-11-07 10:14:12 +0000 | [diff] [blame] | 5063 | MacroAssembler* masm, |
| 5064 | const RuntimeCallHelper& call_helper) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5065 | __ Abort("Unexpected fallthrough to CharFromCode slow case"); |
| 5066 | |
| 5067 | __ bind(&slow_case_); |
| 5068 | call_helper.BeforeCall(masm); |
| 5069 | __ push(code_); |
| 5070 | __ CallRuntime(Runtime::kCharFromCode, 1); |
| 5071 | __ Move(result_, r0); |
| 5072 | call_helper.AfterCall(masm); |
| 5073 | __ jmp(&exit_); |
| 5074 | |
| 5075 | __ Abort("Unexpected fallthrough from CharFromCode slow case"); |
| 5076 | } |
| 5077 | |
| 5078 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5079 | void StringHelper::GenerateCopyCharacters(MacroAssembler* masm, |
| 5080 | Register dest, |
| 5081 | Register src, |
| 5082 | Register count, |
| 5083 | Register scratch, |
| 5084 | bool ascii) { |
| 5085 | Label loop; |
| 5086 | Label done; |
| 5087 | // This loop just copies one character at a time, as it is only used for very |
| 5088 | // short strings. |
| 5089 | if (!ascii) { |
| 5090 | __ add(count, count, Operand(count), SetCC); |
| 5091 | } else { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5092 | __ cmp(count, Operand::Zero()); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5093 | } |
| 5094 | __ b(eq, &done); |
| 5095 | |
| 5096 | __ bind(&loop); |
| 5097 | __ ldrb(scratch, MemOperand(src, 1, PostIndex)); |
| 5098 | // Perform sub between load and dependent store to get the load time to |
| 5099 | // complete. |
| 5100 | __ sub(count, count, Operand(1), SetCC); |
| 5101 | __ strb(scratch, MemOperand(dest, 1, PostIndex)); |
| 5102 | // last iteration. |
| 5103 | __ b(gt, &loop); |
| 5104 | |
| 5105 | __ bind(&done); |
| 5106 | } |
| 5107 | |
| 5108 | |
| 5109 | enum CopyCharactersFlags { |
| 5110 | COPY_ASCII = 1, |
| 5111 | DEST_ALWAYS_ALIGNED = 2 |
| 5112 | }; |
| 5113 | |
| 5114 | |
| 5115 | void StringHelper::GenerateCopyCharactersLong(MacroAssembler* masm, |
| 5116 | Register dest, |
| 5117 | Register src, |
| 5118 | Register count, |
| 5119 | Register scratch1, |
| 5120 | Register scratch2, |
| 5121 | Register scratch3, |
| 5122 | Register scratch4, |
| 5123 | Register scratch5, |
| 5124 | int flags) { |
| 5125 | bool ascii = (flags & COPY_ASCII) != 0; |
| 5126 | bool dest_always_aligned = (flags & DEST_ALWAYS_ALIGNED) != 0; |
| 5127 | |
| 5128 | if (dest_always_aligned && FLAG_debug_code) { |
| 5129 | // Check that destination is actually word aligned if the flag says |
| 5130 | // that it is. |
| 5131 | __ tst(dest, Operand(kPointerAlignmentMask)); |
| 5132 | __ Check(eq, "Destination of copy not aligned."); |
| 5133 | } |
| 5134 | |
| 5135 | const int kReadAlignment = 4; |
| 5136 | const int kReadAlignmentMask = kReadAlignment - 1; |
| 5137 | // Ensure that reading an entire aligned word containing the last character |
| 5138 | // of a string will not read outside the allocated area (because we pad up |
| 5139 | // to kObjectAlignment). |
| 5140 | STATIC_ASSERT(kObjectAlignment >= kReadAlignment); |
| 5141 | // Assumes word reads and writes are little endian. |
| 5142 | // Nothing to do for zero characters. |
| 5143 | Label done; |
| 5144 | if (!ascii) { |
| 5145 | __ add(count, count, Operand(count), SetCC); |
| 5146 | } else { |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5147 | __ cmp(count, Operand::Zero()); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5148 | } |
| 5149 | __ b(eq, &done); |
| 5150 | |
| 5151 | // Assume that you cannot read (or write) unaligned. |
| 5152 | Label byte_loop; |
| 5153 | // Must copy at least eight bytes, otherwise just do it one byte at a time. |
| 5154 | __ cmp(count, Operand(8)); |
| 5155 | __ add(count, dest, Operand(count)); |
| 5156 | Register limit = count; // Read until src equals this. |
| 5157 | __ b(lt, &byte_loop); |
| 5158 | |
| 5159 | if (!dest_always_aligned) { |
| 5160 | // Align dest by byte copying. Copies between zero and three bytes. |
| 5161 | __ and_(scratch4, dest, Operand(kReadAlignmentMask), SetCC); |
| 5162 | Label dest_aligned; |
| 5163 | __ b(eq, &dest_aligned); |
| 5164 | __ cmp(scratch4, Operand(2)); |
| 5165 | __ ldrb(scratch1, MemOperand(src, 1, PostIndex)); |
| 5166 | __ ldrb(scratch2, MemOperand(src, 1, PostIndex), le); |
| 5167 | __ ldrb(scratch3, MemOperand(src, 1, PostIndex), lt); |
| 5168 | __ strb(scratch1, MemOperand(dest, 1, PostIndex)); |
| 5169 | __ strb(scratch2, MemOperand(dest, 1, PostIndex), le); |
| 5170 | __ strb(scratch3, MemOperand(dest, 1, PostIndex), lt); |
| 5171 | __ bind(&dest_aligned); |
| 5172 | } |
| 5173 | |
| 5174 | Label simple_loop; |
| 5175 | |
| 5176 | __ sub(scratch4, dest, Operand(src)); |
| 5177 | __ and_(scratch4, scratch4, Operand(0x03), SetCC); |
| 5178 | __ b(eq, &simple_loop); |
| 5179 | // Shift register is number of bits in a source word that |
| 5180 | // must be combined with bits in the next source word in order |
| 5181 | // to create a destination word. |
| 5182 | |
| 5183 | // Complex loop for src/dst that are not aligned the same way. |
| 5184 | { |
| 5185 | Label loop; |
| 5186 | __ mov(scratch4, Operand(scratch4, LSL, 3)); |
| 5187 | Register left_shift = scratch4; |
| 5188 | __ and_(src, src, Operand(~3)); // Round down to load previous word. |
| 5189 | __ ldr(scratch1, MemOperand(src, 4, PostIndex)); |
| 5190 | // Store the "shift" most significant bits of scratch in the least |
| 5191 | // signficant bits (i.e., shift down by (32-shift)). |
| 5192 | __ rsb(scratch2, left_shift, Operand(32)); |
| 5193 | Register right_shift = scratch2; |
| 5194 | __ mov(scratch1, Operand(scratch1, LSR, right_shift)); |
| 5195 | |
| 5196 | __ bind(&loop); |
| 5197 | __ ldr(scratch3, MemOperand(src, 4, PostIndex)); |
| 5198 | __ sub(scratch5, limit, Operand(dest)); |
| 5199 | __ orr(scratch1, scratch1, Operand(scratch3, LSL, left_shift)); |
| 5200 | __ str(scratch1, MemOperand(dest, 4, PostIndex)); |
| 5201 | __ mov(scratch1, Operand(scratch3, LSR, right_shift)); |
| 5202 | // Loop if four or more bytes left to copy. |
| 5203 | // Compare to eight, because we did the subtract before increasing dst. |
| 5204 | __ sub(scratch5, scratch5, Operand(8), SetCC); |
| 5205 | __ b(ge, &loop); |
| 5206 | } |
| 5207 | // There is now between zero and three bytes left to copy (negative that |
| 5208 | // number is in scratch5), and between one and three bytes already read into |
| 5209 | // scratch1 (eight times that number in scratch4). We may have read past |
| 5210 | // the end of the string, but because objects are aligned, we have not read |
| 5211 | // past the end of the object. |
| 5212 | // Find the minimum of remaining characters to move and preloaded characters |
| 5213 | // and write those as bytes. |
| 5214 | __ add(scratch5, scratch5, Operand(4), SetCC); |
| 5215 | __ b(eq, &done); |
| 5216 | __ cmp(scratch4, Operand(scratch5, LSL, 3), ne); |
| 5217 | // Move minimum of bytes read and bytes left to copy to scratch4. |
| 5218 | __ mov(scratch5, Operand(scratch4, LSR, 3), LeaveCC, lt); |
| 5219 | // Between one and three (value in scratch5) characters already read into |
| 5220 | // scratch ready to write. |
| 5221 | __ cmp(scratch5, Operand(2)); |
| 5222 | __ strb(scratch1, MemOperand(dest, 1, PostIndex)); |
| 5223 | __ mov(scratch1, Operand(scratch1, LSR, 8), LeaveCC, ge); |
| 5224 | __ strb(scratch1, MemOperand(dest, 1, PostIndex), ge); |
| 5225 | __ mov(scratch1, Operand(scratch1, LSR, 8), LeaveCC, gt); |
| 5226 | __ strb(scratch1, MemOperand(dest, 1, PostIndex), gt); |
| 5227 | // Copy any remaining bytes. |
| 5228 | __ b(&byte_loop); |
| 5229 | |
| 5230 | // Simple loop. |
| 5231 | // Copy words from src to dst, until less than four bytes left. |
| 5232 | // Both src and dest are word aligned. |
| 5233 | __ bind(&simple_loop); |
| 5234 | { |
| 5235 | Label loop; |
| 5236 | __ bind(&loop); |
| 5237 | __ ldr(scratch1, MemOperand(src, 4, PostIndex)); |
| 5238 | __ sub(scratch3, limit, Operand(dest)); |
| 5239 | __ str(scratch1, MemOperand(dest, 4, PostIndex)); |
| 5240 | // Compare to 8, not 4, because we do the substraction before increasing |
| 5241 | // dest. |
| 5242 | __ cmp(scratch3, Operand(8)); |
| 5243 | __ b(ge, &loop); |
| 5244 | } |
| 5245 | |
| 5246 | // Copy bytes from src to dst until dst hits limit. |
| 5247 | __ bind(&byte_loop); |
| 5248 | __ cmp(dest, Operand(limit)); |
| 5249 | __ ldrb(scratch1, MemOperand(src, 1, PostIndex), lt); |
| 5250 | __ b(ge, &done); |
| 5251 | __ strb(scratch1, MemOperand(dest, 1, PostIndex)); |
| 5252 | __ b(&byte_loop); |
| 5253 | |
| 5254 | __ bind(&done); |
| 5255 | } |
| 5256 | |
| 5257 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5258 | void StringHelper::GenerateTwoCharacterStringTableProbe(MacroAssembler* masm, |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5259 | Register c1, |
| 5260 | Register c2, |
| 5261 | Register scratch1, |
| 5262 | Register scratch2, |
| 5263 | Register scratch3, |
| 5264 | Register scratch4, |
| 5265 | Register scratch5, |
| 5266 | Label* not_found) { |
| 5267 | // Register scratch3 is the general scratch register in this function. |
| 5268 | Register scratch = scratch3; |
| 5269 | |
| 5270 | // Make sure that both characters are not digits as such strings has a |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5271 | // different hash algorithm. Don't try to look for these in the string table. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5272 | Label not_array_index; |
| 5273 | __ sub(scratch, c1, Operand(static_cast<int>('0'))); |
| 5274 | __ cmp(scratch, Operand(static_cast<int>('9' - '0'))); |
| 5275 | __ b(hi, ¬_array_index); |
| 5276 | __ sub(scratch, c2, Operand(static_cast<int>('0'))); |
| 5277 | __ cmp(scratch, Operand(static_cast<int>('9' - '0'))); |
| 5278 | |
| 5279 | // If check failed combine both characters into single halfword. |
| 5280 | // This is required by the contract of the method: code at the |
| 5281 | // not_found branch expects this combination in c1 register |
| 5282 | __ orr(c1, c1, Operand(c2, LSL, kBitsPerByte), LeaveCC, ls); |
| 5283 | __ b(ls, not_found); |
| 5284 | |
| 5285 | __ bind(¬_array_index); |
| 5286 | // Calculate the two character string hash. |
| 5287 | Register hash = scratch1; |
| 5288 | StringHelper::GenerateHashInit(masm, hash, c1); |
| 5289 | StringHelper::GenerateHashAddCharacter(masm, hash, c2); |
| 5290 | StringHelper::GenerateHashGetHash(masm, hash); |
| 5291 | |
| 5292 | // Collect the two characters in a register. |
| 5293 | Register chars = c1; |
| 5294 | __ orr(chars, chars, Operand(c2, LSL, kBitsPerByte)); |
| 5295 | |
| 5296 | // chars: two character string, char 1 in byte 0 and char 2 in byte 1. |
| 5297 | // hash: hash of two character string. |
| 5298 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5299 | // Load string table |
| 5300 | // Load address of first element of the string table. |
| 5301 | Register string_table = c2; |
| 5302 | __ LoadRoot(string_table, Heap::kStringTableRootIndex); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5303 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5304 | Register undefined = scratch4; |
| 5305 | __ LoadRoot(undefined, Heap::kUndefinedValueRootIndex); |
| 5306 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5307 | // Calculate capacity mask from the string table capacity. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5308 | Register mask = scratch2; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5309 | __ ldr(mask, FieldMemOperand(string_table, StringTable::kCapacityOffset)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5310 | __ mov(mask, Operand(mask, ASR, 1)); |
| 5311 | __ sub(mask, mask, Operand(1)); |
| 5312 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5313 | // Calculate untagged address of the first element of the string table. |
| 5314 | Register first_string_table_element = string_table; |
| 5315 | __ add(first_string_table_element, string_table, |
| 5316 | Operand(StringTable::kElementsStartOffset - kHeapObjectTag)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5317 | |
| 5318 | // Registers |
| 5319 | // chars: two character string, char 1 in byte 0 and char 2 in byte 1. |
| 5320 | // hash: hash of two character string |
| 5321 | // mask: capacity mask |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5322 | // first_string_table_element: address of the first element of |
| 5323 | // the string table |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 5324 | // undefined: the undefined object |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5325 | // scratch: - |
| 5326 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5327 | // Perform a number of probes in the string table. |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 5328 | const int kProbes = 4; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5329 | Label found_in_string_table; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5330 | Label next_probe[kProbes]; |
danno@chromium.org | 2c45679 | 2011-11-11 12:00:53 +0000 | [diff] [blame] | 5331 | Register candidate = scratch5; // Scratch register contains candidate. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5332 | for (int i = 0; i < kProbes; i++) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5333 | // Calculate entry in string table. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5334 | if (i > 0) { |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5335 | __ add(candidate, hash, Operand(StringTable::GetProbeOffset(i))); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5336 | } else { |
| 5337 | __ mov(candidate, hash); |
| 5338 | } |
| 5339 | |
| 5340 | __ and_(candidate, candidate, Operand(mask)); |
| 5341 | |
| 5342 | // Load the entry from the symble table. |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5343 | STATIC_ASSERT(StringTable::kEntrySize == 1); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5344 | __ ldr(candidate, |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5345 | MemOperand(first_string_table_element, |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5346 | candidate, |
| 5347 | LSL, |
| 5348 | kPointerSizeLog2)); |
| 5349 | |
| 5350 | // If entry is undefined no string with this hash can be found. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 5351 | Label is_string; |
| 5352 | __ CompareObjectType(candidate, scratch, scratch, ODDBALL_TYPE); |
| 5353 | __ b(ne, &is_string); |
| 5354 | |
| 5355 | __ cmp(undefined, candidate); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5356 | __ b(eq, not_found); |
danno@chromium.org | 2c45679 | 2011-11-11 12:00:53 +0000 | [diff] [blame] | 5357 | // Must be the hole (deleted entry). |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 5358 | if (FLAG_debug_code) { |
danno@chromium.org | 2c45679 | 2011-11-11 12:00:53 +0000 | [diff] [blame] | 5359 | __ LoadRoot(ip, Heap::kTheHoleValueRootIndex); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 5360 | __ cmp(ip, candidate); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5361 | __ Assert(eq, "oddball in string table is not undefined or the hole"); |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 5362 | } |
| 5363 | __ jmp(&next_probe[i]); |
| 5364 | |
| 5365 | __ bind(&is_string); |
| 5366 | |
| 5367 | // Check that the candidate is a non-external ASCII string. The instance |
| 5368 | // type is still in the scratch register from the CompareObjectType |
| 5369 | // operation. |
| 5370 | __ JumpIfInstanceTypeIsNotSequentialAscii(scratch, scratch, &next_probe[i]); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5371 | |
| 5372 | // If length is not 2 the string is not a candidate. |
| 5373 | __ ldr(scratch, FieldMemOperand(candidate, String::kLengthOffset)); |
| 5374 | __ cmp(scratch, Operand(Smi::FromInt(2))); |
| 5375 | __ b(ne, &next_probe[i]); |
| 5376 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5377 | // Check if the two characters match. |
| 5378 | // Assumes that word load is little endian. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 5379 | __ ldrh(scratch, FieldMemOperand(candidate, SeqOneByteString::kHeaderSize)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5380 | __ cmp(chars, scratch); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5381 | __ b(eq, &found_in_string_table); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5382 | __ bind(&next_probe[i]); |
| 5383 | } |
| 5384 | |
| 5385 | // No matching 2 character string found by probing. |
| 5386 | __ jmp(not_found); |
| 5387 | |
| 5388 | // Scratch register contains result when we fall through to here. |
danno@chromium.org | 2c45679 | 2011-11-11 12:00:53 +0000 | [diff] [blame] | 5389 | Register result = candidate; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5390 | __ bind(&found_in_string_table); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5391 | __ Move(r0, result); |
| 5392 | } |
| 5393 | |
| 5394 | |
| 5395 | void StringHelper::GenerateHashInit(MacroAssembler* masm, |
| 5396 | Register hash, |
| 5397 | Register character) { |
| 5398 | // hash = character + (character << 10); |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 5399 | __ LoadRoot(hash, Heap::kHashSeedRootIndex); |
rossberg@chromium.org | fab1498 | 2012-01-05 15:02:15 +0000 | [diff] [blame] | 5400 | // Untag smi seed and add the character. |
| 5401 | __ add(hash, character, Operand(hash, LSR, kSmiTagSize)); |
| 5402 | // hash += hash << 10; |
| 5403 | __ add(hash, hash, Operand(hash, LSL, 10)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5404 | // hash ^= hash >> 6; |
danno@chromium.org | 2c45679 | 2011-11-11 12:00:53 +0000 | [diff] [blame] | 5405 | __ eor(hash, hash, Operand(hash, LSR, 6)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5406 | } |
| 5407 | |
| 5408 | |
| 5409 | void StringHelper::GenerateHashAddCharacter(MacroAssembler* masm, |
| 5410 | Register hash, |
| 5411 | Register character) { |
| 5412 | // hash += character; |
| 5413 | __ add(hash, hash, Operand(character)); |
| 5414 | // hash += hash << 10; |
| 5415 | __ add(hash, hash, Operand(hash, LSL, 10)); |
| 5416 | // hash ^= hash >> 6; |
danno@chromium.org | 2c45679 | 2011-11-11 12:00:53 +0000 | [diff] [blame] | 5417 | __ eor(hash, hash, Operand(hash, LSR, 6)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5418 | } |
| 5419 | |
| 5420 | |
| 5421 | void StringHelper::GenerateHashGetHash(MacroAssembler* masm, |
| 5422 | Register hash) { |
| 5423 | // hash += hash << 3; |
| 5424 | __ add(hash, hash, Operand(hash, LSL, 3)); |
| 5425 | // hash ^= hash >> 11; |
danno@chromium.org | 2c45679 | 2011-11-11 12:00:53 +0000 | [diff] [blame] | 5426 | __ eor(hash, hash, Operand(hash, LSR, 11)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5427 | // hash += hash << 15; |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 5428 | __ add(hash, hash, Operand(hash, LSL, 15)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5429 | |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 5430 | __ and_(hash, hash, Operand(String::kHashBitMask), SetCC); |
danno@chromium.org | 2c45679 | 2011-11-11 12:00:53 +0000 | [diff] [blame] | 5431 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5432 | // if (hash == 0) hash = 27; |
erik.corry@gmail.com | f2038fb | 2012-01-16 11:42:08 +0000 | [diff] [blame] | 5433 | __ mov(hash, Operand(StringHasher::kZeroHash), LeaveCC, eq); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5434 | } |
| 5435 | |
| 5436 | |
| 5437 | void SubStringStub::Generate(MacroAssembler* masm) { |
| 5438 | Label runtime; |
| 5439 | |
| 5440 | // Stack frame on entry. |
| 5441 | // lr: return address |
| 5442 | // sp[0]: to |
| 5443 | // sp[4]: from |
| 5444 | // sp[8]: string |
| 5445 | |
| 5446 | // This stub is called from the native-call %_SubString(...), so |
| 5447 | // nothing can be assumed about the arguments. It is tested that: |
| 5448 | // "string" is a sequential string, |
| 5449 | // both "from" and "to" are smis, and |
| 5450 | // 0 <= from <= to <= string.length. |
| 5451 | // If any of these assumptions fail, we call the runtime system. |
| 5452 | |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 5453 | const int kToOffset = 0 * kPointerSize; |
| 5454 | const int kFromOffset = 1 * kPointerSize; |
| 5455 | const int kStringOffset = 2 * kPointerSize; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5456 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5457 | __ Ldrd(r2, r3, MemOperand(sp, kToOffset)); |
erik.corry@gmail.com | d88afa2 | 2010-09-15 12:33:05 +0000 | [diff] [blame] | 5458 | STATIC_ASSERT(kFromOffset == kToOffset + 4); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5459 | STATIC_ASSERT(kSmiTag == 0); |
| 5460 | STATIC_ASSERT(kSmiTagSize + kSmiShiftSize == 1); |
ricow@chromium.org | 4668a2c | 2011-08-29 10:41:00 +0000 | [diff] [blame] | 5461 | |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 5462 | // Arithmetic shift right by one un-smi-tags. In this case we rotate right |
| 5463 | // instead because we bail out on non-smi values: ROR and ASR are equivalent |
| 5464 | // for smis but they set the flags in a way that's easier to optimize. |
| 5465 | __ mov(r2, Operand(r2, ROR, 1), SetCC); |
| 5466 | __ mov(r3, Operand(r3, ROR, 1), SetCC, cc); |
| 5467 | // If either to or from had the smi tag bit set, then C is set now, and N |
| 5468 | // has the same value: we rotated by 1, so the bottom bit is now the top bit. |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 5469 | // We want to bailout to runtime here if From is negative. In that case, the |
| 5470 | // next instruction is not executed and we fall through to bailing out to |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 5471 | // runtime. |
| 5472 | // Executed if both r2 and r3 are untagged integers. |
| 5473 | __ sub(r2, r2, Operand(r3), SetCC, cc); |
| 5474 | // One of the above un-smis or the above SUB could have set N==1. |
| 5475 | __ b(mi, &runtime); // Either "from" or "to" is not an smi, or from > to. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5476 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5477 | // Make sure first argument is a string. |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 5478 | __ ldr(r0, MemOperand(sp, kStringOffset)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5479 | STATIC_ASSERT(kSmiTag == 0); |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 5480 | // Do a JumpIfSmi, but fold its jump into the subsequent string test. |
| 5481 | __ tst(r0, Operand(kSmiTagMask)); |
| 5482 | Condition is_string = masm->IsObjectStringType(r0, r1, ne); |
| 5483 | ASSERT(is_string == eq); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5484 | __ b(NegateCondition(is_string), &runtime); |
| 5485 | |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 5486 | Label single_char; |
| 5487 | __ cmp(r2, Operand(1)); |
| 5488 | __ b(eq, &single_char); |
| 5489 | |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 5490 | // Short-cut for the case of trivial substring. |
| 5491 | Label return_r0; |
| 5492 | // r0: original string |
| 5493 | // r2: result string length |
| 5494 | __ ldr(r4, FieldMemOperand(r0, String::kLengthOffset)); |
| 5495 | __ cmp(r2, Operand(r4, ASR, 1)); |
erik.corry@gmail.com | ed49e96 | 2012-04-17 11:57:53 +0000 | [diff] [blame] | 5496 | // Return original string. |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 5497 | __ b(eq, &return_r0); |
erik.corry@gmail.com | ed49e96 | 2012-04-17 11:57:53 +0000 | [diff] [blame] | 5498 | // Longer than original string's length or negative: unsafe arguments. |
| 5499 | __ b(hi, &runtime); |
| 5500 | // Shorter than original string's length: an actual substring. |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 5501 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5502 | // Deal with different string types: update the index if necessary |
| 5503 | // and put the underlying string into r5. |
| 5504 | // r0: original string |
| 5505 | // r1: instance type |
| 5506 | // r2: length |
| 5507 | // r3: from index (untagged) |
| 5508 | Label underlying_unpacked, sliced_string, seq_or_external_string; |
| 5509 | // If the string is not indirect, it can only be sequential or external. |
| 5510 | STATIC_ASSERT(kIsIndirectStringMask == (kSlicedStringTag & kConsStringTag)); |
| 5511 | STATIC_ASSERT(kIsIndirectStringMask != 0); |
| 5512 | __ tst(r1, Operand(kIsIndirectStringMask)); |
| 5513 | __ b(eq, &seq_or_external_string); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5514 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5515 | __ tst(r1, Operand(kSlicedNotConsMask)); |
| 5516 | __ b(ne, &sliced_string); |
| 5517 | // Cons string. Check whether it is flat, then fetch first part. |
| 5518 | __ ldr(r5, FieldMemOperand(r0, ConsString::kSecondOffset)); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5519 | __ CompareRoot(r5, Heap::kempty_stringRootIndex); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5520 | __ b(ne, &runtime); |
| 5521 | __ ldr(r5, FieldMemOperand(r0, ConsString::kFirstOffset)); |
| 5522 | // Update instance type. |
| 5523 | __ ldr(r1, FieldMemOperand(r5, HeapObject::kMapOffset)); |
| 5524 | __ ldrb(r1, FieldMemOperand(r1, Map::kInstanceTypeOffset)); |
| 5525 | __ jmp(&underlying_unpacked); |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 5526 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5527 | __ bind(&sliced_string); |
| 5528 | // Sliced string. Fetch parent and correct start index by offset. |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5529 | __ ldr(r5, FieldMemOperand(r0, SlicedString::kParentOffset)); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 5530 | __ ldr(r4, FieldMemOperand(r0, SlicedString::kOffsetOffset)); |
danno@chromium.org | fa458e4 | 2012-02-01 10:48:36 +0000 | [diff] [blame] | 5531 | __ add(r3, r3, Operand(r4, ASR, 1)); // Add offset to index. |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5532 | // Update instance type. |
| 5533 | __ ldr(r1, FieldMemOperand(r5, HeapObject::kMapOffset)); |
| 5534 | __ ldrb(r1, FieldMemOperand(r1, Map::kInstanceTypeOffset)); |
| 5535 | __ jmp(&underlying_unpacked); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5536 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5537 | __ bind(&seq_or_external_string); |
| 5538 | // Sequential or external string. Just move string to the expected register. |
| 5539 | __ mov(r5, r0); |
| 5540 | |
| 5541 | __ bind(&underlying_unpacked); |
| 5542 | |
| 5543 | if (FLAG_string_slices) { |
| 5544 | Label copy_routine; |
| 5545 | // r5: underlying subject string |
| 5546 | // r1: instance type of underlying subject string |
| 5547 | // r2: length |
| 5548 | // r3: adjusted start index (untagged) |
| 5549 | __ cmp(r2, Operand(SlicedString::kMinLength)); |
| 5550 | // Short slice. Copy instead of slicing. |
| 5551 | __ b(lt, ©_routine); |
| 5552 | // Allocate new sliced string. At this point we do not reload the instance |
| 5553 | // type including the string encoding because we simply rely on the info |
| 5554 | // provided by the original string. It does not matter if the original |
| 5555 | // string's encoding is wrong because we always have to recheck encoding of |
| 5556 | // the newly created string's parent anyways due to externalized strings. |
| 5557 | Label two_byte_slice, set_slice_header; |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 5558 | STATIC_ASSERT((kStringEncodingMask & kOneByteStringTag) != 0); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5559 | STATIC_ASSERT((kStringEncodingMask & kTwoByteStringTag) == 0); |
| 5560 | __ tst(r1, Operand(kStringEncodingMask)); |
| 5561 | __ b(eq, &two_byte_slice); |
| 5562 | __ AllocateAsciiSlicedString(r0, r2, r6, r7, &runtime); |
| 5563 | __ jmp(&set_slice_header); |
| 5564 | __ bind(&two_byte_slice); |
| 5565 | __ AllocateTwoByteSlicedString(r0, r2, r6, r7, &runtime); |
| 5566 | __ bind(&set_slice_header); |
| 5567 | __ mov(r3, Operand(r3, LSL, 1)); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5568 | __ str(r5, FieldMemOperand(r0, SlicedString::kParentOffset)); |
erik.corry@gmail.com | bbceb57 | 2012-03-09 10:52:05 +0000 | [diff] [blame] | 5569 | __ str(r3, FieldMemOperand(r0, SlicedString::kOffsetOffset)); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5570 | __ jmp(&return_r0); |
| 5571 | |
| 5572 | __ bind(©_routine); |
| 5573 | } |
| 5574 | |
| 5575 | // r5: underlying subject string |
| 5576 | // r1: instance type of underlying subject string |
| 5577 | // r2: length |
| 5578 | // r3: adjusted start index (untagged) |
| 5579 | Label two_byte_sequential, sequential_string, allocate_result; |
| 5580 | STATIC_ASSERT(kExternalStringTag != 0); |
| 5581 | STATIC_ASSERT(kSeqStringTag == 0); |
| 5582 | __ tst(r1, Operand(kExternalStringTag)); |
| 5583 | __ b(eq, &sequential_string); |
| 5584 | |
| 5585 | // Handle external string. |
| 5586 | // Rule out short external strings. |
| 5587 | STATIC_CHECK(kShortExternalStringTag != 0); |
| 5588 | __ tst(r1, Operand(kShortExternalStringTag)); |
| 5589 | __ b(ne, &runtime); |
| 5590 | __ ldr(r5, FieldMemOperand(r5, ExternalString::kResourceDataOffset)); |
| 5591 | // r5 already points to the first character of underlying string. |
| 5592 | __ jmp(&allocate_result); |
| 5593 | |
| 5594 | __ bind(&sequential_string); |
| 5595 | // Locate first character of underlying subject string. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 5596 | STATIC_ASSERT(SeqTwoByteString::kHeaderSize == SeqOneByteString::kHeaderSize); |
| 5597 | __ add(r5, r5, Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag)); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5598 | |
| 5599 | __ bind(&allocate_result); |
| 5600 | // Sequential acii string. Allocate the result. |
mvstanton@chromium.org | e4ac3ef | 2012-11-12 14:53:34 +0000 | [diff] [blame] | 5601 | STATIC_ASSERT((kOneByteStringTag & kStringEncodingMask) != 0); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5602 | __ tst(r1, Operand(kStringEncodingMask)); |
| 5603 | __ b(eq, &two_byte_sequential); |
| 5604 | |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 5605 | // Allocate and copy the resulting ASCII string. |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5606 | __ AllocateAsciiString(r0, r2, r4, r6, r7, &runtime); |
| 5607 | |
| 5608 | // Locate first character of substring to copy. |
| 5609 | __ add(r5, r5, r3); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5610 | // Locate first character of result. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 5611 | __ add(r1, r0, Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5612 | |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 5613 | // r0: result string |
| 5614 | // r1: first character of result string |
| 5615 | // r2: result string length |
| 5616 | // r5: first character of substring to copy |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 5617 | STATIC_ASSERT((SeqOneByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5618 | StringHelper::GenerateCopyCharactersLong(masm, r1, r5, r2, r3, r4, r6, r7, r9, |
| 5619 | COPY_ASCII | DEST_ALWAYS_ALIGNED); |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 5620 | __ jmp(&return_r0); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5621 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5622 | // Allocate and copy the resulting two-byte string. |
| 5623 | __ bind(&two_byte_sequential); |
| 5624 | __ AllocateTwoByteString(r0, r2, r4, r6, r7, &runtime); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5625 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5626 | // Locate first character of substring to copy. |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 5627 | STATIC_ASSERT(kSmiTagSize == 1 && kSmiTag == 0); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5628 | __ add(r5, r5, Operand(r3, LSL, 1)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5629 | // Locate first character of result. |
| 5630 | __ add(r1, r0, Operand(SeqTwoByteString::kHeaderSize - kHeapObjectTag)); |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 5631 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5632 | // r0: result string. |
| 5633 | // r1: first character of result. |
| 5634 | // r2: result length. |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 5635 | // r5: first character of substring to copy. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5636 | STATIC_ASSERT((SeqTwoByteString::kHeaderSize & kObjectAlignmentMask) == 0); |
erik.corry@gmail.com | d88afa2 | 2010-09-15 12:33:05 +0000 | [diff] [blame] | 5637 | StringHelper::GenerateCopyCharactersLong( |
| 5638 | masm, r1, r5, r2, r3, r4, r6, r7, r9, DEST_ALWAYS_ALIGNED); |
fschneider@chromium.org | 1805e21 | 2011-09-05 10:49:12 +0000 | [diff] [blame] | 5639 | |
| 5640 | __ bind(&return_r0); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5641 | Counters* counters = masm->isolate()->counters(); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 5642 | __ IncrementCounter(counters->sub_string_native(), 1, r3, r4); |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 5643 | __ Drop(3); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5644 | __ Ret(); |
| 5645 | |
| 5646 | // Just jump to runtime to create the sub string. |
| 5647 | __ bind(&runtime); |
| 5648 | __ TailCallRuntime(Runtime::kSubString, 3, 1); |
ulan@chromium.org | 2e04b58 | 2013-02-21 14:06:02 +0000 | [diff] [blame] | 5649 | |
| 5650 | __ bind(&single_char); |
| 5651 | // r0: original string |
| 5652 | // r1: instance type |
| 5653 | // r2: length |
| 5654 | // r3: from index (untagged) |
| 5655 | __ SmiTag(r3, r3); |
| 5656 | StringCharAtGenerator generator( |
| 5657 | r0, r3, r2, r0, &runtime, &runtime, &runtime, STRING_INDEX_IS_NUMBER); |
| 5658 | generator.GenerateFast(masm); |
| 5659 | __ Drop(3); |
| 5660 | __ Ret(); |
| 5661 | generator.SkipSlow(masm, &runtime); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5662 | } |
| 5663 | |
| 5664 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 5665 | void StringCompareStub::GenerateFlatAsciiStringEquals(MacroAssembler* masm, |
| 5666 | Register left, |
| 5667 | Register right, |
| 5668 | Register scratch1, |
| 5669 | Register scratch2, |
| 5670 | Register scratch3) { |
| 5671 | Register length = scratch1; |
| 5672 | |
| 5673 | // Compare lengths. |
| 5674 | Label strings_not_equal, check_zero_length; |
| 5675 | __ ldr(length, FieldMemOperand(left, String::kLengthOffset)); |
| 5676 | __ ldr(scratch2, FieldMemOperand(right, String::kLengthOffset)); |
| 5677 | __ cmp(length, scratch2); |
| 5678 | __ b(eq, &check_zero_length); |
| 5679 | __ bind(&strings_not_equal); |
| 5680 | __ mov(r0, Operand(Smi::FromInt(NOT_EQUAL))); |
| 5681 | __ Ret(); |
| 5682 | |
| 5683 | // Check if the length is zero. |
| 5684 | Label compare_chars; |
| 5685 | __ bind(&check_zero_length); |
| 5686 | STATIC_ASSERT(kSmiTag == 0); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5687 | __ cmp(length, Operand::Zero()); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 5688 | __ b(ne, &compare_chars); |
| 5689 | __ mov(r0, Operand(Smi::FromInt(EQUAL))); |
| 5690 | __ Ret(); |
| 5691 | |
| 5692 | // Compare characters. |
| 5693 | __ bind(&compare_chars); |
| 5694 | GenerateAsciiCharsCompareLoop(masm, |
| 5695 | left, right, length, scratch2, scratch3, |
| 5696 | &strings_not_equal); |
| 5697 | |
| 5698 | // Characters are equal. |
| 5699 | __ mov(r0, Operand(Smi::FromInt(EQUAL))); |
| 5700 | __ Ret(); |
| 5701 | } |
| 5702 | |
| 5703 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5704 | void StringCompareStub::GenerateCompareFlatAsciiStrings(MacroAssembler* masm, |
| 5705 | Register left, |
| 5706 | Register right, |
| 5707 | Register scratch1, |
| 5708 | Register scratch2, |
| 5709 | Register scratch3, |
| 5710 | Register scratch4) { |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 5711 | Label result_not_equal, compare_lengths; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5712 | // Find minimum length and length difference. |
| 5713 | __ ldr(scratch1, FieldMemOperand(left, String::kLengthOffset)); |
| 5714 | __ ldr(scratch2, FieldMemOperand(right, String::kLengthOffset)); |
| 5715 | __ sub(scratch3, scratch1, Operand(scratch2), SetCC); |
| 5716 | Register length_delta = scratch3; |
| 5717 | __ mov(scratch1, scratch2, LeaveCC, gt); |
| 5718 | Register min_length = scratch1; |
| 5719 | STATIC_ASSERT(kSmiTag == 0); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 5720 | __ cmp(min_length, Operand::Zero()); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5721 | __ b(eq, &compare_lengths); |
| 5722 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 5723 | // Compare loop. |
| 5724 | GenerateAsciiCharsCompareLoop(masm, |
| 5725 | left, right, min_length, scratch2, scratch4, |
| 5726 | &result_not_equal); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5727 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 5728 | // Compare lengths - strings up to min-length are equal. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5729 | __ bind(&compare_lengths); |
| 5730 | ASSERT(Smi::FromInt(EQUAL) == static_cast<Smi*>(0)); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 5731 | // Use length_delta as result if it's zero. |
| 5732 | __ mov(r0, Operand(length_delta), SetCC); |
| 5733 | __ bind(&result_not_equal); |
| 5734 | // Conditionally update the result based either on length_delta or |
| 5735 | // the last comparion performed in the loop above. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5736 | __ mov(r0, Operand(Smi::FromInt(GREATER)), LeaveCC, gt); |
| 5737 | __ mov(r0, Operand(Smi::FromInt(LESS)), LeaveCC, lt); |
| 5738 | __ Ret(); |
| 5739 | } |
| 5740 | |
| 5741 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 5742 | void StringCompareStub::GenerateAsciiCharsCompareLoop( |
| 5743 | MacroAssembler* masm, |
| 5744 | Register left, |
| 5745 | Register right, |
| 5746 | Register length, |
| 5747 | Register scratch1, |
| 5748 | Register scratch2, |
| 5749 | Label* chars_not_equal) { |
| 5750 | // Change index to run from -length to -1 by adding length to string |
| 5751 | // start. This means that loop ends when index reaches zero, which |
| 5752 | // doesn't need an additional compare. |
| 5753 | __ SmiUntag(length); |
| 5754 | __ add(scratch1, length, |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 5755 | Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag)); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 5756 | __ add(left, left, Operand(scratch1)); |
| 5757 | __ add(right, right, Operand(scratch1)); |
ricow@chromium.org | ddd545c | 2011-08-24 12:02:41 +0000 | [diff] [blame] | 5758 | __ rsb(length, length, Operand::Zero()); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 5759 | Register index = length; // index = -length; |
| 5760 | |
| 5761 | // Compare loop. |
| 5762 | Label loop; |
| 5763 | __ bind(&loop); |
| 5764 | __ ldrb(scratch1, MemOperand(left, index)); |
| 5765 | __ ldrb(scratch2, MemOperand(right, index)); |
| 5766 | __ cmp(scratch1, scratch2); |
| 5767 | __ b(ne, chars_not_equal); |
| 5768 | __ add(index, index, Operand(1), SetCC); |
| 5769 | __ b(ne, &loop); |
| 5770 | } |
| 5771 | |
| 5772 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5773 | void StringCompareStub::Generate(MacroAssembler* masm) { |
| 5774 | Label runtime; |
| 5775 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 5776 | Counters* counters = masm->isolate()->counters(); |
| 5777 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5778 | // Stack frame on entry. |
| 5779 | // sp[0]: right string |
| 5780 | // sp[4]: left string |
erik.corry@gmail.com | d88afa2 | 2010-09-15 12:33:05 +0000 | [diff] [blame] | 5781 | __ Ldrd(r0 , r1, MemOperand(sp)); // Load right in r0, left in r1. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5782 | |
| 5783 | Label not_same; |
| 5784 | __ cmp(r0, r1); |
| 5785 | __ b(ne, ¬_same); |
| 5786 | STATIC_ASSERT(EQUAL == 0); |
| 5787 | STATIC_ASSERT(kSmiTag == 0); |
| 5788 | __ mov(r0, Operand(Smi::FromInt(EQUAL))); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 5789 | __ IncrementCounter(counters->string_compare_native(), 1, r1, r2); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5790 | __ add(sp, sp, Operand(2 * kPointerSize)); |
| 5791 | __ Ret(); |
| 5792 | |
| 5793 | __ bind(¬_same); |
| 5794 | |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 5795 | // Check that both objects are sequential ASCII strings. |
erik.corry@gmail.com | d88afa2 | 2010-09-15 12:33:05 +0000 | [diff] [blame] | 5796 | __ JumpIfNotBothSequentialAsciiStrings(r1, r0, r2, r3, &runtime); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5797 | |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 5798 | // Compare flat ASCII strings natively. Remove arguments from stack first. |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 5799 | __ IncrementCounter(counters->string_compare_native(), 1, r2, r3); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5800 | __ add(sp, sp, Operand(2 * kPointerSize)); |
erik.corry@gmail.com | d88afa2 | 2010-09-15 12:33:05 +0000 | [diff] [blame] | 5801 | GenerateCompareFlatAsciiStrings(masm, r1, r0, r2, r3, r4, r5); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5802 | |
| 5803 | // Call the runtime; it returns -1 (less), 0 (equal), or 1 (greater) |
| 5804 | // tagged as a small integer. |
| 5805 | __ bind(&runtime); |
| 5806 | __ TailCallRuntime(Runtime::kStringCompare, 2, 1); |
| 5807 | } |
| 5808 | |
| 5809 | |
| 5810 | void StringAddStub::Generate(MacroAssembler* masm) { |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5811 | Label call_runtime, call_builtin; |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 5812 | Builtins::JavaScript builtin_id = Builtins::ADD; |
| 5813 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 5814 | Counters* counters = masm->isolate()->counters(); |
| 5815 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5816 | // Stack on entry: |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 5817 | // sp[0]: second argument (right). |
| 5818 | // sp[4]: first argument (left). |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5819 | |
| 5820 | // Load the two arguments. |
| 5821 | __ ldr(r0, MemOperand(sp, 1 * kPointerSize)); // First argument. |
| 5822 | __ ldr(r1, MemOperand(sp, 0 * kPointerSize)); // Second argument. |
| 5823 | |
| 5824 | // Make sure that both arguments are strings if not known in advance. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 5825 | if (flags_ == NO_STRING_ADD_FLAGS) { |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5826 | __ JumpIfEitherSmi(r0, r1, &call_runtime); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5827 | // Load instance types. |
| 5828 | __ ldr(r4, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 5829 | __ ldr(r5, FieldMemOperand(r1, HeapObject::kMapOffset)); |
| 5830 | __ ldrb(r4, FieldMemOperand(r4, Map::kInstanceTypeOffset)); |
| 5831 | __ ldrb(r5, FieldMemOperand(r5, Map::kInstanceTypeOffset)); |
| 5832 | STATIC_ASSERT(kStringTag == 0); |
| 5833 | // If either is not a string, go to runtime. |
| 5834 | __ tst(r4, Operand(kIsNotStringMask)); |
| 5835 | __ tst(r5, Operand(kIsNotStringMask), eq); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5836 | __ b(ne, &call_runtime); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 5837 | } else { |
| 5838 | // Here at least one of the arguments is definitely a string. |
| 5839 | // We convert the one that is not known to be a string. |
| 5840 | if ((flags_ & NO_STRING_CHECK_LEFT_IN_STUB) == 0) { |
| 5841 | ASSERT((flags_ & NO_STRING_CHECK_RIGHT_IN_STUB) != 0); |
| 5842 | GenerateConvertArgument( |
| 5843 | masm, 1 * kPointerSize, r0, r2, r3, r4, r5, &call_builtin); |
| 5844 | builtin_id = Builtins::STRING_ADD_RIGHT; |
| 5845 | } else if ((flags_ & NO_STRING_CHECK_RIGHT_IN_STUB) == 0) { |
| 5846 | ASSERT((flags_ & NO_STRING_CHECK_LEFT_IN_STUB) != 0); |
| 5847 | GenerateConvertArgument( |
| 5848 | masm, 0 * kPointerSize, r1, r2, r3, r4, r5, &call_builtin); |
| 5849 | builtin_id = Builtins::STRING_ADD_LEFT; |
| 5850 | } |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5851 | } |
| 5852 | |
| 5853 | // Both arguments are strings. |
| 5854 | // r0: first string |
| 5855 | // r1: second string |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 5856 | // r4: first string instance type (if flags_ == NO_STRING_ADD_FLAGS) |
| 5857 | // r5: second string instance type (if flags_ == NO_STRING_ADD_FLAGS) |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5858 | { |
| 5859 | Label strings_not_empty; |
| 5860 | // Check if either of the strings are empty. In that case return the other. |
| 5861 | __ ldr(r2, FieldMemOperand(r0, String::kLengthOffset)); |
| 5862 | __ ldr(r3, FieldMemOperand(r1, String::kLengthOffset)); |
| 5863 | STATIC_ASSERT(kSmiTag == 0); |
| 5864 | __ cmp(r2, Operand(Smi::FromInt(0))); // Test if first string is empty. |
| 5865 | __ mov(r0, Operand(r1), LeaveCC, eq); // If first is empty, return second. |
| 5866 | STATIC_ASSERT(kSmiTag == 0); |
| 5867 | // Else test if second string is empty. |
| 5868 | __ cmp(r3, Operand(Smi::FromInt(0)), ne); |
| 5869 | __ b(ne, &strings_not_empty); // If either string was empty, return r0. |
| 5870 | |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 5871 | __ IncrementCounter(counters->string_add_native(), 1, r2, r3); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5872 | __ add(sp, sp, Operand(2 * kPointerSize)); |
| 5873 | __ Ret(); |
| 5874 | |
| 5875 | __ bind(&strings_not_empty); |
| 5876 | } |
| 5877 | |
| 5878 | __ mov(r2, Operand(r2, ASR, kSmiTagSize)); |
| 5879 | __ mov(r3, Operand(r3, ASR, kSmiTagSize)); |
| 5880 | // Both strings are non-empty. |
| 5881 | // r0: first string |
| 5882 | // r1: second string |
| 5883 | // r2: length of first string |
| 5884 | // r3: length of second string |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 5885 | // r4: first string instance type (if flags_ == NO_STRING_ADD_FLAGS) |
| 5886 | // r5: second string instance type (if flags_ == NO_STRING_ADD_FLAGS) |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5887 | // Look at the length of the result of adding the two strings. |
| 5888 | Label string_add_flat_result, longer_than_two; |
| 5889 | // Adding two lengths can't overflow. |
| 5890 | STATIC_ASSERT(String::kMaxLength < String::kMaxLength * 2); |
| 5891 | __ add(r6, r2, Operand(r3)); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5892 | // Use the string table when adding two one character strings, as it |
| 5893 | // helps later optimizations to return a string here. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5894 | __ cmp(r6, Operand(2)); |
| 5895 | __ b(ne, &longer_than_two); |
| 5896 | |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 5897 | // Check that both strings are non-external ASCII strings. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 5898 | if (flags_ != NO_STRING_ADD_FLAGS) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5899 | __ ldr(r4, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 5900 | __ ldr(r5, FieldMemOperand(r1, HeapObject::kMapOffset)); |
| 5901 | __ ldrb(r4, FieldMemOperand(r4, Map::kInstanceTypeOffset)); |
| 5902 | __ ldrb(r5, FieldMemOperand(r5, Map::kInstanceTypeOffset)); |
| 5903 | } |
| 5904 | __ JumpIfBothInstanceTypesAreNotSequentialAscii(r4, r5, r6, r7, |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5905 | &call_runtime); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5906 | |
| 5907 | // Get the two characters forming the sub string. |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 5908 | __ ldrb(r2, FieldMemOperand(r0, SeqOneByteString::kHeaderSize)); |
| 5909 | __ ldrb(r3, FieldMemOperand(r1, SeqOneByteString::kHeaderSize)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5910 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5911 | // Try to lookup two character string in string table. If it is not found |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5912 | // just allocate a new one. |
| 5913 | Label make_two_character_string; |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 5914 | StringHelper::GenerateTwoCharacterStringTableProbe( |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5915 | masm, r2, r3, r6, r7, r4, r5, r9, &make_two_character_string); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 5916 | __ IncrementCounter(counters->string_add_native(), 1, r2, r3); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5917 | __ add(sp, sp, Operand(2 * kPointerSize)); |
| 5918 | __ Ret(); |
| 5919 | |
| 5920 | __ bind(&make_two_character_string); |
| 5921 | // Resulting string has length 2 and first chars of two strings |
| 5922 | // are combined into single halfword in r2 register. |
| 5923 | // So we can fill resulting string without two loops by a single |
| 5924 | // halfword store instruction (which assumes that processor is |
| 5925 | // in a little endian mode) |
| 5926 | __ mov(r6, Operand(2)); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5927 | __ AllocateAsciiString(r0, r6, r4, r5, r9, &call_runtime); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 5928 | __ strh(r2, FieldMemOperand(r0, SeqOneByteString::kHeaderSize)); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 5929 | __ IncrementCounter(counters->string_add_native(), 1, r2, r3); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5930 | __ add(sp, sp, Operand(2 * kPointerSize)); |
| 5931 | __ Ret(); |
| 5932 | |
| 5933 | __ bind(&longer_than_two); |
| 5934 | // Check if resulting string will be flat. |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 5935 | __ cmp(r6, Operand(ConsString::kMinLength)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5936 | __ b(lt, &string_add_flat_result); |
| 5937 | // Handle exceptionally long strings in the runtime system. |
| 5938 | STATIC_ASSERT((String::kMaxLength & 0x80000000) == 0); |
| 5939 | ASSERT(IsPowerOf2(String::kMaxLength + 1)); |
| 5940 | // kMaxLength + 1 is representable as shifted literal, kMaxLength is not. |
| 5941 | __ cmp(r6, Operand(String::kMaxLength + 1)); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5942 | __ b(hs, &call_runtime); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5943 | |
| 5944 | // If result is not supposed to be flat, allocate a cons string object. |
ricow@chromium.org | badaffc | 2011-03-17 12:15:27 +0000 | [diff] [blame] | 5945 | // If both strings are ASCII the result is an ASCII cons string. |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 5946 | if (flags_ != NO_STRING_ADD_FLAGS) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5947 | __ ldr(r4, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 5948 | __ ldr(r5, FieldMemOperand(r1, HeapObject::kMapOffset)); |
| 5949 | __ ldrb(r4, FieldMemOperand(r4, Map::kInstanceTypeOffset)); |
| 5950 | __ ldrb(r5, FieldMemOperand(r5, Map::kInstanceTypeOffset)); |
| 5951 | } |
| 5952 | Label non_ascii, allocated, ascii_data; |
| 5953 | STATIC_ASSERT(kTwoByteStringTag == 0); |
| 5954 | __ tst(r4, Operand(kStringEncodingMask)); |
| 5955 | __ tst(r5, Operand(kStringEncodingMask), ne); |
| 5956 | __ b(eq, &non_ascii); |
| 5957 | |
| 5958 | // Allocate an ASCII cons string. |
| 5959 | __ bind(&ascii_data); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 5960 | __ AllocateAsciiConsString(r7, r6, r4, r5, &call_runtime); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5961 | __ bind(&allocated); |
| 5962 | // Fill the fields of the cons string. |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 5963 | Label skip_write_barrier, after_writing; |
| 5964 | ExternalReference high_promotion_mode = ExternalReference:: |
| 5965 | new_space_high_promotion_mode_active_address(masm->isolate()); |
| 5966 | __ mov(r4, Operand(high_promotion_mode)); |
| 5967 | __ ldr(r4, MemOperand(r4, 0)); |
| 5968 | __ cmp(r4, Operand::Zero()); |
| 5969 | __ b(eq, &skip_write_barrier); |
| 5970 | |
| 5971 | __ str(r0, FieldMemOperand(r7, ConsString::kFirstOffset)); |
| 5972 | __ RecordWriteField(r7, |
| 5973 | ConsString::kFirstOffset, |
| 5974 | r0, |
| 5975 | r4, |
| 5976 | kLRHasNotBeenSaved, |
| 5977 | kDontSaveFPRegs); |
| 5978 | __ str(r1, FieldMemOperand(r7, ConsString::kSecondOffset)); |
| 5979 | __ RecordWriteField(r7, |
| 5980 | ConsString::kSecondOffset, |
| 5981 | r1, |
| 5982 | r4, |
| 5983 | kLRHasNotBeenSaved, |
| 5984 | kDontSaveFPRegs); |
| 5985 | __ jmp(&after_writing); |
| 5986 | |
| 5987 | __ bind(&skip_write_barrier); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5988 | __ str(r0, FieldMemOperand(r7, ConsString::kFirstOffset)); |
| 5989 | __ str(r1, FieldMemOperand(r7, ConsString::kSecondOffset)); |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 5990 | |
| 5991 | __ bind(&after_writing); |
| 5992 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5993 | __ mov(r0, Operand(r7)); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 5994 | __ IncrementCounter(counters->string_add_native(), 1, r2, r3); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 5995 | __ add(sp, sp, Operand(2 * kPointerSize)); |
| 5996 | __ Ret(); |
| 5997 | |
| 5998 | __ bind(&non_ascii); |
| 5999 | // At least one of the strings is two-byte. Check whether it happens |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 6000 | // to contain only one byte characters. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6001 | // r4: first instance type. |
| 6002 | // r5: second instance type. |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 6003 | __ tst(r4, Operand(kOneByteDataHintMask)); |
| 6004 | __ tst(r5, Operand(kOneByteDataHintMask), ne); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6005 | __ b(ne, &ascii_data); |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 6006 | __ eor(r4, r4, Operand(r5)); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 6007 | STATIC_ASSERT(kOneByteStringTag != 0 && kOneByteDataHintTag != 0); |
| 6008 | __ and_(r4, r4, Operand(kOneByteStringTag | kOneByteDataHintTag)); |
| 6009 | __ cmp(r4, Operand(kOneByteStringTag | kOneByteDataHintTag)); |
yangguo@chromium.org | 46a2a51 | 2013-01-18 16:29:40 +0000 | [diff] [blame] | 6010 | __ b(eq, &ascii_data); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6011 | |
| 6012 | // Allocate a two byte cons string. |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6013 | __ AllocateTwoByteConsString(r7, r6, r4, r5, &call_runtime); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6014 | __ jmp(&allocated); |
| 6015 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6016 | // We cannot encounter sliced strings or cons strings here since: |
ulan@chromium.org | 2efb900 | 2012-01-19 15:36:35 +0000 | [diff] [blame] | 6017 | STATIC_ASSERT(SlicedString::kMinLength >= ConsString::kMinLength); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6018 | // Handle creating a flat result from either external or sequential strings. |
| 6019 | // Locate the first characters' locations. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6020 | // r0: first string |
| 6021 | // r1: second string |
| 6022 | // r2: length of first string |
| 6023 | // r3: length of second string |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 6024 | // r4: first string instance type (if flags_ == NO_STRING_ADD_FLAGS) |
| 6025 | // r5: second string instance type (if flags_ == NO_STRING_ADD_FLAGS) |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6026 | // r6: sum of lengths. |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6027 | Label first_prepared, second_prepared; |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6028 | __ bind(&string_add_flat_result); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 6029 | if (flags_ != NO_STRING_ADD_FLAGS) { |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6030 | __ ldr(r4, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 6031 | __ ldr(r5, FieldMemOperand(r1, HeapObject::kMapOffset)); |
| 6032 | __ ldrb(r4, FieldMemOperand(r4, Map::kInstanceTypeOffset)); |
| 6033 | __ ldrb(r5, FieldMemOperand(r5, Map::kInstanceTypeOffset)); |
| 6034 | } |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6035 | |
| 6036 | // Check whether both strings have same encoding |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6037 | __ eor(r7, r4, Operand(r5)); |
| 6038 | __ tst(r7, Operand(kStringEncodingMask)); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6039 | __ b(ne, &call_runtime); |
| 6040 | |
| 6041 | STATIC_ASSERT(kSeqStringTag == 0); |
| 6042 | __ tst(r4, Operand(kStringRepresentationMask)); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 6043 | STATIC_ASSERT(SeqOneByteString::kHeaderSize == SeqTwoByteString::kHeaderSize); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6044 | __ add(r7, |
| 6045 | r0, |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 6046 | Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag), |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6047 | LeaveCC, |
| 6048 | eq); |
| 6049 | __ b(eq, &first_prepared); |
| 6050 | // External string: rule out short external string and load string resource. |
| 6051 | STATIC_ASSERT(kShortExternalStringTag != 0); |
| 6052 | __ tst(r4, Operand(kShortExternalStringMask)); |
| 6053 | __ b(ne, &call_runtime); |
| 6054 | __ ldr(r7, FieldMemOperand(r0, ExternalString::kResourceDataOffset)); |
| 6055 | __ bind(&first_prepared); |
| 6056 | |
| 6057 | STATIC_ASSERT(kSeqStringTag == 0); |
| 6058 | __ tst(r5, Operand(kStringRepresentationMask)); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 6059 | STATIC_ASSERT(SeqOneByteString::kHeaderSize == SeqTwoByteString::kHeaderSize); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6060 | __ add(r1, |
| 6061 | r1, |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 6062 | Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag), |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6063 | LeaveCC, |
| 6064 | eq); |
| 6065 | __ b(eq, &second_prepared); |
| 6066 | // External string: rule out short external string and load string resource. |
| 6067 | STATIC_ASSERT(kShortExternalStringTag != 0); |
| 6068 | __ tst(r5, Operand(kShortExternalStringMask)); |
| 6069 | __ b(ne, &call_runtime); |
| 6070 | __ ldr(r1, FieldMemOperand(r1, ExternalString::kResourceDataOffset)); |
| 6071 | __ bind(&second_prepared); |
| 6072 | |
| 6073 | Label non_ascii_string_add_flat_result; |
| 6074 | // r7: first character of first string |
| 6075 | // r1: first character of second string |
| 6076 | // r2: length of first string. |
| 6077 | // r3: length of second string. |
| 6078 | // r6: sum of lengths. |
| 6079 | // Both strings have the same encoding. |
| 6080 | STATIC_ASSERT(kTwoByteStringTag == 0); |
| 6081 | __ tst(r5, Operand(kStringEncodingMask)); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6082 | __ b(eq, &non_ascii_string_add_flat_result); |
| 6083 | |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6084 | __ AllocateAsciiString(r0, r6, r4, r5, r9, &call_runtime); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 6085 | __ add(r6, r0, Operand(SeqOneByteString::kHeaderSize - kHeapObjectTag)); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6086 | // r0: result string. |
| 6087 | // r7: first character of first string. |
| 6088 | // r1: first character of second string. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6089 | // r2: length of first string. |
| 6090 | // r3: length of second string. |
| 6091 | // r6: first character of result. |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6092 | StringHelper::GenerateCopyCharacters(masm, r6, r7, r2, r4, true); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6093 | // r6: next character of result. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6094 | StringHelper::GenerateCopyCharacters(masm, r6, r1, r3, r4, true); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 6095 | __ IncrementCounter(counters->string_add_native(), 1, r2, r3); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6096 | __ add(sp, sp, Operand(2 * kPointerSize)); |
| 6097 | __ Ret(); |
| 6098 | |
| 6099 | __ bind(&non_ascii_string_add_flat_result); |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6100 | __ AllocateTwoByteString(r0, r6, r4, r5, r9, &call_runtime); |
| 6101 | __ add(r6, r0, Operand(SeqTwoByteString::kHeaderSize - kHeapObjectTag)); |
| 6102 | // r0: result string. |
| 6103 | // r7: first character of first string. |
| 6104 | // r1: first character of second string. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6105 | // r2: length of first string. |
| 6106 | // r3: length of second string. |
| 6107 | // r6: first character of result. |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6108 | StringHelper::GenerateCopyCharacters(masm, r6, r7, r2, r4, false); |
| 6109 | // r6: next character of result. |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6110 | StringHelper::GenerateCopyCharacters(masm, r6, r1, r3, r4, false); |
fschneider@chromium.org | 7979bbb | 2011-03-28 10:47:03 +0000 | [diff] [blame] | 6111 | __ IncrementCounter(counters->string_add_native(), 1, r2, r3); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6112 | __ add(sp, sp, Operand(2 * kPointerSize)); |
| 6113 | __ Ret(); |
| 6114 | |
| 6115 | // Just jump to runtime to add the two strings. |
ricow@chromium.org | 7ad6522 | 2011-12-19 12:13:11 +0000 | [diff] [blame] | 6116 | __ bind(&call_runtime); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6117 | __ TailCallRuntime(Runtime::kStringAdd, 2, 1); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 6118 | |
| 6119 | if (call_builtin.is_linked()) { |
| 6120 | __ bind(&call_builtin); |
sgjesse@chromium.org | 8e8294a | 2011-05-02 14:30:53 +0000 | [diff] [blame] | 6121 | __ InvokeBuiltin(builtin_id, JUMP_FUNCTION); |
fschneider@chromium.org | 3a5fd78 | 2011-02-24 10:10:44 +0000 | [diff] [blame] | 6122 | } |
| 6123 | } |
| 6124 | |
| 6125 | |
| 6126 | void StringAddStub::GenerateConvertArgument(MacroAssembler* masm, |
| 6127 | int stack_offset, |
| 6128 | Register arg, |
| 6129 | Register scratch1, |
| 6130 | Register scratch2, |
| 6131 | Register scratch3, |
| 6132 | Register scratch4, |
| 6133 | Label* slow) { |
| 6134 | // First check if the argument is already a string. |
| 6135 | Label not_string, done; |
| 6136 | __ JumpIfSmi(arg, ¬_string); |
| 6137 | __ CompareObjectType(arg, scratch1, scratch1, FIRST_NONSTRING_TYPE); |
| 6138 | __ b(lt, &done); |
| 6139 | |
| 6140 | // Check the number to string cache. |
| 6141 | Label not_cached; |
| 6142 | __ bind(¬_string); |
| 6143 | // Puts the cached result into scratch1. |
| 6144 | NumberToStringStub::GenerateLookupNumberStringCache(masm, |
| 6145 | arg, |
| 6146 | scratch1, |
| 6147 | scratch2, |
| 6148 | scratch3, |
| 6149 | scratch4, |
| 6150 | false, |
| 6151 | ¬_cached); |
| 6152 | __ mov(arg, scratch1); |
| 6153 | __ str(arg, MemOperand(sp, stack_offset)); |
| 6154 | __ jmp(&done); |
| 6155 | |
| 6156 | // Check if the argument is a safe string wrapper. |
| 6157 | __ bind(¬_cached); |
| 6158 | __ JumpIfSmi(arg, slow); |
| 6159 | __ CompareObjectType( |
| 6160 | arg, scratch1, scratch2, JS_VALUE_TYPE); // map -> scratch1. |
| 6161 | __ b(ne, slow); |
| 6162 | __ ldrb(scratch2, FieldMemOperand(scratch1, Map::kBitField2Offset)); |
| 6163 | __ and_(scratch2, |
| 6164 | scratch2, Operand(1 << Map::kStringWrapperSafeForDefaultValueOf)); |
| 6165 | __ cmp(scratch2, |
| 6166 | Operand(1 << Map::kStringWrapperSafeForDefaultValueOf)); |
| 6167 | __ b(ne, slow); |
| 6168 | __ ldr(arg, FieldMemOperand(arg, JSValue::kValueOffset)); |
| 6169 | __ str(arg, MemOperand(sp, stack_offset)); |
| 6170 | |
| 6171 | __ bind(&done); |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 6172 | } |
| 6173 | |
| 6174 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6175 | void ICCompareStub::GenerateSmis(MacroAssembler* masm) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 6176 | ASSERT(state_ == CompareIC::SMI); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6177 | Label miss; |
| 6178 | __ orr(r2, r1, r0); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 6179 | __ JumpIfNotSmi(r2, &miss); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6180 | |
| 6181 | if (GetCondition() == eq) { |
| 6182 | // For equality we do not care about the sign of the result. |
| 6183 | __ sub(r0, r0, r1, SetCC); |
| 6184 | } else { |
sgjesse@chromium.org | 496c03a | 2011-02-14 12:05:43 +0000 | [diff] [blame] | 6185 | // Untag before subtracting to avoid handling overflow. |
| 6186 | __ SmiUntag(r1); |
| 6187 | __ sub(r0, r1, SmiUntagOperand(r0)); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6188 | } |
| 6189 | __ Ret(); |
| 6190 | |
| 6191 | __ bind(&miss); |
| 6192 | GenerateMiss(masm); |
| 6193 | } |
| 6194 | |
| 6195 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 6196 | void ICCompareStub::GenerateNumbers(MacroAssembler* masm) { |
| 6197 | ASSERT(state_ == CompareIC::NUMBER); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6198 | |
| 6199 | Label generic_stub; |
ulan@chromium.org | 9a21ec4 | 2012-03-06 08:42:24 +0000 | [diff] [blame] | 6200 | Label unordered, maybe_undefined1, maybe_undefined2; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6201 | Label miss; |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6202 | |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 6203 | if (left_ == CompareIC::SMI) { |
| 6204 | __ JumpIfNotSmi(r1, &miss); |
| 6205 | } |
| 6206 | if (right_ == CompareIC::SMI) { |
| 6207 | __ JumpIfNotSmi(r0, &miss); |
| 6208 | } |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6209 | |
| 6210 | // Inlining the double comparison and falling back to the general compare |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 6211 | // stub if NaN is involved. |
| 6212 | // Load left and right operand. |
| 6213 | Label done, left, left_smi, right_smi; |
| 6214 | __ JumpIfSmi(r0, &right_smi); |
| 6215 | __ CheckMap(r0, r2, Heap::kHeapNumberMapRootIndex, &maybe_undefined1, |
| 6216 | DONT_DO_SMI_CHECK); |
| 6217 | __ sub(r2, r0, Operand(kHeapObjectTag)); |
| 6218 | __ vldr(d1, r2, HeapNumber::kValueOffset); |
| 6219 | __ b(&left); |
| 6220 | __ bind(&right_smi); |
| 6221 | __ SmiUntag(r2, r0); // Can't clobber r0 yet. |
| 6222 | SwVfpRegister single_scratch = d2.low(); |
| 6223 | __ vmov(single_scratch, r2); |
| 6224 | __ vcvt_f64_s32(d1, single_scratch); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6225 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 6226 | __ bind(&left); |
| 6227 | __ JumpIfSmi(r1, &left_smi); |
| 6228 | __ CheckMap(r1, r2, Heap::kHeapNumberMapRootIndex, &maybe_undefined2, |
| 6229 | DONT_DO_SMI_CHECK); |
| 6230 | __ sub(r2, r1, Operand(kHeapObjectTag)); |
| 6231 | __ vldr(d0, r2, HeapNumber::kValueOffset); |
| 6232 | __ b(&done); |
| 6233 | __ bind(&left_smi); |
| 6234 | __ SmiUntag(r2, r1); // Can't clobber r1 yet. |
| 6235 | single_scratch = d3.low(); |
| 6236 | __ vmov(single_scratch, r2); |
| 6237 | __ vcvt_f64_s32(d0, single_scratch); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6238 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 6239 | __ bind(&done); |
| 6240 | // Compare operands. |
| 6241 | __ VFPCompareAndSetFlags(d0, d1); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 6242 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 6243 | // Don't base result on status bits when a NaN is involved. |
| 6244 | __ b(vs, &unordered); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6245 | |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 6246 | // Return a result of -1, 0, or 1, based on status bits. |
| 6247 | __ mov(r0, Operand(EQUAL), LeaveCC, eq); |
| 6248 | __ mov(r0, Operand(LESS), LeaveCC, lt); |
| 6249 | __ mov(r0, Operand(GREATER), LeaveCC, gt); |
| 6250 | __ Ret(); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6251 | |
ulan@chromium.org | 9a21ec4 | 2012-03-06 08:42:24 +0000 | [diff] [blame] | 6252 | __ bind(&unordered); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6253 | __ bind(&generic_stub); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 6254 | ICCompareStub stub(op_, CompareIC::GENERIC, CompareIC::GENERIC, |
| 6255 | CompareIC::GENERIC); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 6256 | __ Jump(stub.GetCode(masm->isolate()), RelocInfo::CODE_TARGET); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6257 | |
ulan@chromium.org | 9a21ec4 | 2012-03-06 08:42:24 +0000 | [diff] [blame] | 6258 | __ bind(&maybe_undefined1); |
| 6259 | if (Token::IsOrderedRelationalCompareOp(op_)) { |
| 6260 | __ CompareRoot(r0, Heap::kUndefinedValueRootIndex); |
| 6261 | __ b(ne, &miss); |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 6262 | __ JumpIfSmi(r1, &unordered); |
ulan@chromium.org | 9a21ec4 | 2012-03-06 08:42:24 +0000 | [diff] [blame] | 6263 | __ CompareObjectType(r1, r2, r2, HEAP_NUMBER_TYPE); |
| 6264 | __ b(ne, &maybe_undefined2); |
| 6265 | __ jmp(&unordered); |
| 6266 | } |
| 6267 | |
| 6268 | __ bind(&maybe_undefined2); |
| 6269 | if (Token::IsOrderedRelationalCompareOp(op_)) { |
| 6270 | __ CompareRoot(r1, Heap::kUndefinedValueRootIndex); |
| 6271 | __ b(eq, &unordered); |
| 6272 | } |
| 6273 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6274 | __ bind(&miss); |
| 6275 | GenerateMiss(masm); |
| 6276 | } |
| 6277 | |
| 6278 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 6279 | void ICCompareStub::GenerateInternalizedStrings(MacroAssembler* masm) { |
| 6280 | ASSERT(state_ == CompareIC::INTERNALIZED_STRING); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 6281 | Label miss; |
| 6282 | |
| 6283 | // Registers containing left and right operands respectively. |
| 6284 | Register left = r1; |
| 6285 | Register right = r0; |
| 6286 | Register tmp1 = r2; |
| 6287 | Register tmp2 = r3; |
| 6288 | |
| 6289 | // Check that both operands are heap objects. |
| 6290 | __ JumpIfEitherSmi(left, right, &miss); |
| 6291 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 6292 | // Check that both operands are internalized strings. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 6293 | __ ldr(tmp1, FieldMemOperand(left, HeapObject::kMapOffset)); |
| 6294 | __ ldr(tmp2, FieldMemOperand(right, HeapObject::kMapOffset)); |
| 6295 | __ ldrb(tmp1, FieldMemOperand(tmp1, Map::kInstanceTypeOffset)); |
| 6296 | __ ldrb(tmp2, FieldMemOperand(tmp2, Map::kInstanceTypeOffset)); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 6297 | STATIC_ASSERT(kInternalizedTag != 0); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 6298 | __ and_(tmp1, tmp1, Operand(tmp2)); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 6299 | __ tst(tmp1, Operand(kIsInternalizedMask)); |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 6300 | __ b(eq, &miss); |
| 6301 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 6302 | // Internalized strings are compared by identity. |
| 6303 | __ cmp(left, right); |
| 6304 | // Make sure r0 is non-zero. At this point input operands are |
| 6305 | // guaranteed to be non-zero. |
| 6306 | ASSERT(right.is(r0)); |
| 6307 | STATIC_ASSERT(EQUAL == 0); |
| 6308 | STATIC_ASSERT(kSmiTag == 0); |
| 6309 | __ mov(r0, Operand(Smi::FromInt(EQUAL)), LeaveCC, eq); |
| 6310 | __ Ret(); |
| 6311 | |
| 6312 | __ bind(&miss); |
| 6313 | GenerateMiss(masm); |
| 6314 | } |
| 6315 | |
| 6316 | |
| 6317 | void ICCompareStub::GenerateUniqueNames(MacroAssembler* masm) { |
| 6318 | ASSERT(state_ == CompareIC::UNIQUE_NAME); |
| 6319 | ASSERT(GetCondition() == eq); |
| 6320 | Label miss; |
| 6321 | |
| 6322 | // Registers containing left and right operands respectively. |
| 6323 | Register left = r1; |
| 6324 | Register right = r0; |
| 6325 | Register tmp1 = r2; |
| 6326 | Register tmp2 = r3; |
| 6327 | |
| 6328 | // Check that both operands are heap objects. |
| 6329 | __ JumpIfEitherSmi(left, right, &miss); |
| 6330 | |
| 6331 | // Check that both operands are unique names. This leaves the instance |
| 6332 | // types loaded in tmp1 and tmp2. |
| 6333 | STATIC_ASSERT(kInternalizedTag != 0); |
| 6334 | __ ldr(tmp1, FieldMemOperand(left, HeapObject::kMapOffset)); |
| 6335 | __ ldr(tmp2, FieldMemOperand(right, HeapObject::kMapOffset)); |
| 6336 | __ ldrb(tmp1, FieldMemOperand(tmp1, Map::kInstanceTypeOffset)); |
| 6337 | __ ldrb(tmp2, FieldMemOperand(tmp2, Map::kInstanceTypeOffset)); |
| 6338 | |
| 6339 | Label succeed1; |
| 6340 | __ tst(tmp1, Operand(kIsInternalizedMask)); |
| 6341 | __ b(ne, &succeed1); |
| 6342 | __ cmp(tmp1, Operand(SYMBOL_TYPE)); |
| 6343 | __ b(ne, &miss); |
| 6344 | __ bind(&succeed1); |
| 6345 | |
| 6346 | Label succeed2; |
| 6347 | __ tst(tmp2, Operand(kIsInternalizedMask)); |
| 6348 | __ b(ne, &succeed2); |
| 6349 | __ cmp(tmp2, Operand(SYMBOL_TYPE)); |
| 6350 | __ b(ne, &miss); |
| 6351 | __ bind(&succeed2); |
| 6352 | |
| 6353 | // Unique names are compared by identity. |
karlklose@chromium.org | 83a4728 | 2011-05-11 11:54:09 +0000 | [diff] [blame] | 6354 | __ cmp(left, right); |
| 6355 | // Make sure r0 is non-zero. At this point input operands are |
| 6356 | // guaranteed to be non-zero. |
| 6357 | ASSERT(right.is(r0)); |
| 6358 | STATIC_ASSERT(EQUAL == 0); |
| 6359 | STATIC_ASSERT(kSmiTag == 0); |
| 6360 | __ mov(r0, Operand(Smi::FromInt(EQUAL)), LeaveCC, eq); |
| 6361 | __ Ret(); |
| 6362 | |
| 6363 | __ bind(&miss); |
| 6364 | GenerateMiss(masm); |
| 6365 | } |
| 6366 | |
| 6367 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6368 | void ICCompareStub::GenerateStrings(MacroAssembler* masm) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 6369 | ASSERT(state_ == CompareIC::STRING); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6370 | Label miss; |
| 6371 | |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 6372 | bool equality = Token::IsEqualityOp(op_); |
| 6373 | |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6374 | // Registers containing left and right operands respectively. |
| 6375 | Register left = r1; |
| 6376 | Register right = r0; |
| 6377 | Register tmp1 = r2; |
| 6378 | Register tmp2 = r3; |
| 6379 | Register tmp3 = r4; |
| 6380 | Register tmp4 = r5; |
| 6381 | |
| 6382 | // Check that both operands are heap objects. |
| 6383 | __ JumpIfEitherSmi(left, right, &miss); |
| 6384 | |
| 6385 | // Check that both operands are strings. This leaves the instance |
| 6386 | // types loaded in tmp1 and tmp2. |
| 6387 | __ ldr(tmp1, FieldMemOperand(left, HeapObject::kMapOffset)); |
| 6388 | __ ldr(tmp2, FieldMemOperand(right, HeapObject::kMapOffset)); |
| 6389 | __ ldrb(tmp1, FieldMemOperand(tmp1, Map::kInstanceTypeOffset)); |
| 6390 | __ ldrb(tmp2, FieldMemOperand(tmp2, Map::kInstanceTypeOffset)); |
| 6391 | STATIC_ASSERT(kNotStringTag != 0); |
| 6392 | __ orr(tmp3, tmp1, tmp2); |
| 6393 | __ tst(tmp3, Operand(kIsNotStringMask)); |
| 6394 | __ b(ne, &miss); |
| 6395 | |
| 6396 | // Fast check for identical strings. |
| 6397 | __ cmp(left, right); |
| 6398 | STATIC_ASSERT(EQUAL == 0); |
| 6399 | STATIC_ASSERT(kSmiTag == 0); |
| 6400 | __ mov(r0, Operand(Smi::FromInt(EQUAL)), LeaveCC, eq); |
| 6401 | __ Ret(eq); |
| 6402 | |
| 6403 | // Handle not identical strings. |
| 6404 | |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 6405 | // Check that both strings are internalized strings. If they are, we're done |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6406 | // because we already know they are not identical. |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 6407 | if (equality) { |
| 6408 | ASSERT(GetCondition() == eq); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 6409 | STATIC_ASSERT(kInternalizedTag != 0); |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 6410 | __ and_(tmp3, tmp1, Operand(tmp2)); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 6411 | __ tst(tmp3, Operand(kIsInternalizedMask)); |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 6412 | // Make sure r0 is non-zero. At this point input operands are |
| 6413 | // guaranteed to be non-zero. |
| 6414 | ASSERT(right.is(r0)); |
| 6415 | __ Ret(ne); |
| 6416 | } |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6417 | |
| 6418 | // Check that both strings are sequential ASCII. |
| 6419 | Label runtime; |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 6420 | __ JumpIfBothInstanceTypesAreNotSequentialAscii( |
| 6421 | tmp1, tmp2, tmp3, tmp4, &runtime); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6422 | |
| 6423 | // Compare flat ASCII strings. Returns when done. |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 6424 | if (equality) { |
| 6425 | StringCompareStub::GenerateFlatAsciiStringEquals( |
| 6426 | masm, left, right, tmp1, tmp2, tmp3); |
| 6427 | } else { |
| 6428 | StringCompareStub::GenerateCompareFlatAsciiStrings( |
| 6429 | masm, left, right, tmp1, tmp2, tmp3, tmp4); |
| 6430 | } |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6431 | |
| 6432 | // Handle more complex cases in runtime. |
| 6433 | __ bind(&runtime); |
| 6434 | __ Push(left, right); |
svenpanne@chromium.org | 4efbdb1 | 2012-03-12 08:18:42 +0000 | [diff] [blame] | 6435 | if (equality) { |
| 6436 | __ TailCallRuntime(Runtime::kStringEquals, 2, 1); |
| 6437 | } else { |
| 6438 | __ TailCallRuntime(Runtime::kStringCompare, 2, 1); |
| 6439 | } |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6440 | |
| 6441 | __ bind(&miss); |
| 6442 | GenerateMiss(masm); |
| 6443 | } |
| 6444 | |
| 6445 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6446 | void ICCompareStub::GenerateObjects(MacroAssembler* masm) { |
yangguo@chromium.org | fb37721 | 2012-11-16 14:43:43 +0000 | [diff] [blame] | 6447 | ASSERT(state_ == CompareIC::OBJECT); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6448 | Label miss; |
| 6449 | __ and_(r2, r1, Operand(r0)); |
whesse@chromium.org | 7b26015 | 2011-06-20 15:33:18 +0000 | [diff] [blame] | 6450 | __ JumpIfSmi(r2, &miss); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6451 | |
| 6452 | __ CompareObjectType(r0, r2, r2, JS_OBJECT_TYPE); |
| 6453 | __ b(ne, &miss); |
| 6454 | __ CompareObjectType(r1, r2, r2, JS_OBJECT_TYPE); |
| 6455 | __ b(ne, &miss); |
| 6456 | |
| 6457 | ASSERT(GetCondition() == eq); |
| 6458 | __ sub(r0, r0, Operand(r1)); |
| 6459 | __ Ret(); |
| 6460 | |
| 6461 | __ bind(&miss); |
| 6462 | GenerateMiss(masm); |
| 6463 | } |
| 6464 | |
| 6465 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 6466 | void ICCompareStub::GenerateKnownObjects(MacroAssembler* masm) { |
| 6467 | Label miss; |
| 6468 | __ and_(r2, r1, Operand(r0)); |
| 6469 | __ JumpIfSmi(r2, &miss); |
| 6470 | __ ldr(r2, FieldMemOperand(r0, HeapObject::kMapOffset)); |
| 6471 | __ ldr(r3, FieldMemOperand(r1, HeapObject::kMapOffset)); |
| 6472 | __ cmp(r2, Operand(known_map_)); |
| 6473 | __ b(ne, &miss); |
| 6474 | __ cmp(r3, Operand(known_map_)); |
| 6475 | __ b(ne, &miss); |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6476 | |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 6477 | __ sub(r0, r0, Operand(r1)); |
| 6478 | __ Ret(); |
| 6479 | |
| 6480 | __ bind(&miss); |
| 6481 | GenerateMiss(masm); |
| 6482 | } |
| 6483 | |
| 6484 | |
| 6485 | |
| 6486 | void ICCompareStub::GenerateMiss(MacroAssembler* masm) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6487 | { |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 6488 | // Call the runtime system in a fresh internal frame. |
| 6489 | ExternalReference miss = |
| 6490 | ExternalReference(IC_Utility(IC::kCompareIC_Miss), masm->isolate()); |
| 6491 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6492 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 6493 | __ Push(r1, r0); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 6494 | __ push(lr); |
| 6495 | __ Push(r1, r0); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6496 | __ mov(ip, Operand(Smi::FromInt(op_))); |
| 6497 | __ push(ip); |
| 6498 | __ CallExternalReference(miss, 3); |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 6499 | // Compute the entry point of the rewritten stub. |
| 6500 | __ add(r2, r0, Operand(Code::kHeaderSize - kHeapObjectTag)); |
| 6501 | // Restore registers. |
| 6502 | __ pop(lr); |
| 6503 | __ pop(r0); |
| 6504 | __ pop(r1); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6505 | } |
ricow@chromium.org | 64e3a4b | 2011-12-13 08:07:27 +0000 | [diff] [blame] | 6506 | |
kasperl@chromium.org | a555126 | 2010-12-07 12:49:48 +0000 | [diff] [blame] | 6507 | __ Jump(r2); |
| 6508 | } |
| 6509 | |
| 6510 | |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 6511 | void DirectCEntryStub::Generate(MacroAssembler* masm) { |
| 6512 | __ ldr(pc, MemOperand(sp, 0)); |
| 6513 | } |
| 6514 | |
| 6515 | |
| 6516 | void DirectCEntryStub::GenerateCall(MacroAssembler* masm, |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 6517 | ExternalReference function) { |
vegorov@chromium.org | 5d6c1f5 | 2011-02-28 13:13:38 +0000 | [diff] [blame] | 6518 | __ mov(r2, Operand(function)); |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 6519 | GenerateCall(masm, r2); |
ricow@chromium.org | 83aa549 | 2011-02-07 12:42:56 +0000 | [diff] [blame] | 6520 | } |
| 6521 | |
| 6522 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 6523 | void DirectCEntryStub::GenerateCall(MacroAssembler* masm, |
| 6524 | Register target) { |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 6525 | intptr_t code = |
| 6526 | reinterpret_cast<intptr_t>(GetCode(masm->isolate()).location()); |
| 6527 | __ mov(lr, Operand(code, RelocInfo::CODE_TARGET)); |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 6528 | |
| 6529 | // Prevent literal pool emission during calculation of return address. |
| 6530 | Assembler::BlockConstPoolScope block_const_pool(masm); |
| 6531 | |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 6532 | // Push return address (accessible to GC through exit frame pc). |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 6533 | // Note that using pc with str is deprecated. |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 6534 | Label start; |
| 6535 | __ bind(&start); |
| 6536 | __ add(ip, pc, Operand(Assembler::kInstrSize)); |
whesse@chromium.org | 4acdc2c | 2011-08-15 13:01:23 +0000 | [diff] [blame] | 6537 | __ str(ip, MemOperand(sp, 0)); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 6538 | __ Jump(target); // Call the C++ function. |
danno@chromium.org | b645116 | 2011-08-17 14:33:23 +0000 | [diff] [blame] | 6539 | ASSERT_EQ(Assembler::kInstrSize + Assembler::kPcLoadDelta, |
| 6540 | masm->SizeOfCodeGeneratedSince(&start)); |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 6541 | __ VFPEnsureFPSCRState(r2); |
kmillikin@chromium.org | 49edbdf | 2011-02-16 12:32:18 +0000 | [diff] [blame] | 6542 | } |
| 6543 | |
| 6544 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6545 | void NameDictionaryLookupStub::GenerateNegativeLookup(MacroAssembler* masm, |
| 6546 | Label* miss, |
| 6547 | Label* done, |
| 6548 | Register receiver, |
| 6549 | Register properties, |
| 6550 | Handle<Name> name, |
| 6551 | Register scratch0) { |
| 6552 | ASSERT(name->IsUniqueName()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 6553 | // If names of slots in range from 1 to kProbes - 1 for the hash value are |
| 6554 | // not equal to the name and kProbes-th slot is not used (its name is the |
| 6555 | // undefined value), it guarantees the hash table doesn't contain the |
| 6556 | // property. It's true even if some slots represent deleted properties |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 6557 | // (their names are the hole value). |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 6558 | for (int i = 0; i < kInlinedProbes; i++) { |
| 6559 | // scratch0 points to properties hash. |
| 6560 | // Compute the masked index: (hash + i + i * i) & mask. |
| 6561 | Register index = scratch0; |
| 6562 | // Capacity is smi 2^n. |
| 6563 | __ ldr(index, FieldMemOperand(properties, kCapacityOffset)); |
| 6564 | __ sub(index, index, Operand(1)); |
| 6565 | __ and_(index, index, Operand( |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6566 | Smi::FromInt(name->Hash() + NameDictionary::GetProbeOffset(i)))); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 6567 | |
| 6568 | // Scale the index by multiplying by the entry size. |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6569 | ASSERT(NameDictionary::kEntrySize == 3); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 6570 | __ add(index, index, Operand(index, LSL, 1)); // index *= 3. |
| 6571 | |
| 6572 | Register entity_name = scratch0; |
| 6573 | // Having undefined at this place means the name is not contained. |
| 6574 | ASSERT_EQ(kSmiTagSize, 1); |
| 6575 | Register tmp = properties; |
| 6576 | __ add(tmp, properties, Operand(index, LSL, 1)); |
| 6577 | __ ldr(entity_name, FieldMemOperand(tmp, kElementsStartOffset)); |
| 6578 | |
| 6579 | ASSERT(!tmp.is(entity_name)); |
| 6580 | __ LoadRoot(tmp, Heap::kUndefinedValueRootIndex); |
| 6581 | __ cmp(entity_name, tmp); |
| 6582 | __ b(eq, done); |
| 6583 | |
ulan@chromium.org | 77802e8 | 2013-03-26 11:54:42 +0000 | [diff] [blame] | 6584 | // Load the hole ready for use below: |
| 6585 | __ LoadRoot(tmp, Heap::kTheHoleValueRootIndex); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 6586 | |
ulan@chromium.org | 77802e8 | 2013-03-26 11:54:42 +0000 | [diff] [blame] | 6587 | // Stop if found the property. |
| 6588 | __ cmp(entity_name, Operand(Handle<Name>(name))); |
| 6589 | __ b(eq, miss); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 6590 | |
ulan@chromium.org | 77802e8 | 2013-03-26 11:54:42 +0000 | [diff] [blame] | 6591 | Label good; |
| 6592 | __ cmp(entity_name, tmp); |
| 6593 | __ b(eq, &good); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 6594 | |
ulan@chromium.org | 77802e8 | 2013-03-26 11:54:42 +0000 | [diff] [blame] | 6595 | // Check if the entry name is not a unique name. |
| 6596 | __ ldr(entity_name, FieldMemOperand(entity_name, HeapObject::kMapOffset)); |
| 6597 | __ ldrb(entity_name, |
| 6598 | FieldMemOperand(entity_name, Map::kInstanceTypeOffset)); |
| 6599 | __ tst(entity_name, Operand(kIsInternalizedMask)); |
| 6600 | __ b(ne, &good); |
| 6601 | __ cmp(entity_name, Operand(SYMBOL_TYPE)); |
| 6602 | __ b(ne, miss); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 6603 | |
ulan@chromium.org | 77802e8 | 2013-03-26 11:54:42 +0000 | [diff] [blame] | 6604 | __ bind(&good); |
ulan@chromium.org | 967e270 | 2012-02-28 09:49:15 +0000 | [diff] [blame] | 6605 | |
ulan@chromium.org | 77802e8 | 2013-03-26 11:54:42 +0000 | [diff] [blame] | 6606 | // Restore the properties. |
| 6607 | __ ldr(properties, |
| 6608 | FieldMemOperand(receiver, JSObject::kPropertiesOffset)); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 6609 | } |
| 6610 | |
| 6611 | const int spill_mask = |
| 6612 | (lr.bit() | r6.bit() | r5.bit() | r4.bit() | r3.bit() | |
| 6613 | r2.bit() | r1.bit() | r0.bit()); |
| 6614 | |
| 6615 | __ stm(db_w, sp, spill_mask); |
| 6616 | __ ldr(r0, FieldMemOperand(receiver, JSObject::kPropertiesOffset)); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6617 | __ mov(r1, Operand(Handle<Name>(name))); |
| 6618 | NameDictionaryLookupStub stub(NEGATIVE_LOOKUP); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 6619 | __ CallStub(&stub); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 6620 | __ cmp(r0, Operand::Zero()); |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 6621 | __ ldm(ia_w, sp, spill_mask); |
| 6622 | |
| 6623 | __ b(eq, done); |
| 6624 | __ b(ne, miss); |
| 6625 | } |
| 6626 | |
| 6627 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6628 | // Probe the name dictionary in the |elements| register. Jump to the |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6629 | // |done| label if a property with the given name is found. Jump to |
| 6630 | // the |miss| label otherwise. |
| 6631 | // If lookup was successful |scratch2| will be equal to elements + 4 * index. |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6632 | void NameDictionaryLookupStub::GeneratePositiveLookup(MacroAssembler* masm, |
| 6633 | Label* miss, |
| 6634 | Label* done, |
| 6635 | Register elements, |
| 6636 | Register name, |
| 6637 | Register scratch1, |
| 6638 | Register scratch2) { |
erik.corry@gmail.com | 6e28b56 | 2011-10-27 14:20:17 +0000 | [diff] [blame] | 6639 | ASSERT(!elements.is(scratch1)); |
| 6640 | ASSERT(!elements.is(scratch2)); |
| 6641 | ASSERT(!name.is(scratch1)); |
| 6642 | ASSERT(!name.is(scratch2)); |
| 6643 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6644 | __ AssertName(name); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6645 | |
| 6646 | // Compute the capacity mask. |
| 6647 | __ ldr(scratch1, FieldMemOperand(elements, kCapacityOffset)); |
| 6648 | __ mov(scratch1, Operand(scratch1, ASR, kSmiTagSize)); // convert smi to int |
| 6649 | __ sub(scratch1, scratch1, Operand(1)); |
| 6650 | |
| 6651 | // Generate an unrolled loop that performs a few probes before |
| 6652 | // giving up. Measurements done on Gmail indicate that 2 probes |
| 6653 | // cover ~93% of loads from dictionaries. |
| 6654 | for (int i = 0; i < kInlinedProbes; i++) { |
| 6655 | // Compute the masked index: (hash + i + i * i) & mask. |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6656 | __ ldr(scratch2, FieldMemOperand(name, Name::kHashFieldOffset)); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6657 | if (i > 0) { |
| 6658 | // Add the probe offset (i + i * i) left shifted to avoid right shifting |
| 6659 | // the hash in a separate instruction. The value hash + i + i * i is right |
| 6660 | // shifted in the following and instruction. |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6661 | ASSERT(NameDictionary::GetProbeOffset(i) < |
| 6662 | 1 << (32 - Name::kHashFieldOffset)); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6663 | __ add(scratch2, scratch2, Operand( |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6664 | NameDictionary::GetProbeOffset(i) << Name::kHashShift)); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6665 | } |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6666 | __ and_(scratch2, scratch1, Operand(scratch2, LSR, Name::kHashShift)); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6667 | |
| 6668 | // Scale the index by multiplying by the element size. |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6669 | ASSERT(NameDictionary::kEntrySize == 3); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6670 | // scratch2 = scratch2 * 3. |
| 6671 | __ add(scratch2, scratch2, Operand(scratch2, LSL, 1)); |
| 6672 | |
| 6673 | // Check if the key is identical to the name. |
| 6674 | __ add(scratch2, elements, Operand(scratch2, LSL, 2)); |
| 6675 | __ ldr(ip, FieldMemOperand(scratch2, kElementsStartOffset)); |
| 6676 | __ cmp(name, Operand(ip)); |
| 6677 | __ b(eq, done); |
| 6678 | } |
| 6679 | |
| 6680 | const int spill_mask = |
| 6681 | (lr.bit() | r6.bit() | r5.bit() | r4.bit() | |
| 6682 | r3.bit() | r2.bit() | r1.bit() | r0.bit()) & |
| 6683 | ~(scratch1.bit() | scratch2.bit()); |
| 6684 | |
| 6685 | __ stm(db_w, sp, spill_mask); |
erik.corry@gmail.com | 6e28b56 | 2011-10-27 14:20:17 +0000 | [diff] [blame] | 6686 | if (name.is(r0)) { |
| 6687 | ASSERT(!elements.is(r1)); |
| 6688 | __ Move(r1, name); |
| 6689 | __ Move(r0, elements); |
| 6690 | } else { |
| 6691 | __ Move(r0, elements); |
| 6692 | __ Move(r1, name); |
| 6693 | } |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6694 | NameDictionaryLookupStub stub(POSITIVE_LOOKUP); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6695 | __ CallStub(&stub); |
jkummerow@chromium.org | 59297c7 | 2013-01-09 16:32:23 +0000 | [diff] [blame] | 6696 | __ cmp(r0, Operand::Zero()); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6697 | __ mov(scratch2, Operand(r2)); |
| 6698 | __ ldm(ia_w, sp, spill_mask); |
| 6699 | |
| 6700 | __ b(ne, done); |
| 6701 | __ b(eq, miss); |
| 6702 | } |
| 6703 | |
| 6704 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6705 | void NameDictionaryLookupStub::Generate(MacroAssembler* masm) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6706 | // This stub overrides SometimesSetsUpAFrame() to return false. That means |
| 6707 | // we cannot call anything that could cause a GC from this stub. |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6708 | // Registers: |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6709 | // result: NameDictionary to probe |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6710 | // r1: key |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6711 | // dictionary: NameDictionary to probe. |
| 6712 | // index: will hold an index of entry if lookup is successful. |
| 6713 | // might alias with result_. |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6714 | // Returns: |
| 6715 | // result_ is zero if lookup failed, non zero otherwise. |
| 6716 | |
| 6717 | Register result = r0; |
| 6718 | Register dictionary = r0; |
| 6719 | Register key = r1; |
| 6720 | Register index = r2; |
| 6721 | Register mask = r3; |
| 6722 | Register hash = r4; |
| 6723 | Register undefined = r5; |
| 6724 | Register entry_key = r6; |
| 6725 | |
| 6726 | Label in_dictionary, maybe_in_dictionary, not_in_dictionary; |
| 6727 | |
| 6728 | __ ldr(mask, FieldMemOperand(dictionary, kCapacityOffset)); |
| 6729 | __ mov(mask, Operand(mask, ASR, kSmiTagSize)); |
| 6730 | __ sub(mask, mask, Operand(1)); |
| 6731 | |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6732 | __ ldr(hash, FieldMemOperand(key, Name::kHashFieldOffset)); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6733 | |
| 6734 | __ LoadRoot(undefined, Heap::kUndefinedValueRootIndex); |
| 6735 | |
| 6736 | for (int i = kInlinedProbes; i < kTotalProbes; i++) { |
| 6737 | // Compute the masked index: (hash + i + i * i) & mask. |
| 6738 | // Capacity is smi 2^n. |
| 6739 | if (i > 0) { |
| 6740 | // Add the probe offset (i + i * i) left shifted to avoid right shifting |
| 6741 | // the hash in a separate instruction. The value hash + i + i * i is right |
| 6742 | // shifted in the following and instruction. |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6743 | ASSERT(NameDictionary::GetProbeOffset(i) < |
| 6744 | 1 << (32 - Name::kHashFieldOffset)); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6745 | __ add(index, hash, Operand( |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6746 | NameDictionary::GetProbeOffset(i) << Name::kHashShift)); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6747 | } else { |
| 6748 | __ mov(index, Operand(hash)); |
| 6749 | } |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6750 | __ and_(index, mask, Operand(index, LSR, Name::kHashShift)); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6751 | |
| 6752 | // Scale the index by multiplying by the entry size. |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6753 | ASSERT(NameDictionary::kEntrySize == 3); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6754 | __ add(index, index, Operand(index, LSL, 1)); // index *= 3. |
| 6755 | |
| 6756 | ASSERT_EQ(kSmiTagSize, 1); |
| 6757 | __ add(index, dictionary, Operand(index, LSL, 2)); |
| 6758 | __ ldr(entry_key, FieldMemOperand(index, kElementsStartOffset)); |
| 6759 | |
| 6760 | // Having undefined at this place means the name is not contained. |
| 6761 | __ cmp(entry_key, Operand(undefined)); |
| 6762 | __ b(eq, ¬_in_dictionary); |
| 6763 | |
| 6764 | // Stop if found the property. |
| 6765 | __ cmp(entry_key, Operand(key)); |
| 6766 | __ b(eq, &in_dictionary); |
| 6767 | |
| 6768 | if (i != kTotalProbes - 1 && mode_ == NEGATIVE_LOOKUP) { |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6769 | // Check if the entry name is not a unique name. |
| 6770 | Label cont; |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6771 | __ ldr(entry_key, FieldMemOperand(entry_key, HeapObject::kMapOffset)); |
| 6772 | __ ldrb(entry_key, |
| 6773 | FieldMemOperand(entry_key, Map::kInstanceTypeOffset)); |
yangguo@chromium.org | 4a9f655 | 2013-03-04 14:46:33 +0000 | [diff] [blame] | 6774 | __ tst(entry_key, Operand(kIsInternalizedMask)); |
ulan@chromium.org | 750145a | 2013-03-07 15:14:13 +0000 | [diff] [blame] | 6775 | __ b(ne, &cont); |
| 6776 | __ cmp(entry_key, Operand(SYMBOL_TYPE)); |
| 6777 | __ b(ne, &maybe_in_dictionary); |
| 6778 | __ bind(&cont); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6779 | } |
| 6780 | } |
| 6781 | |
| 6782 | __ bind(&maybe_in_dictionary); |
| 6783 | // If we are doing negative lookup then probing failure should be |
| 6784 | // treated as a lookup success. For positive lookup probing failure |
| 6785 | // should be treated as lookup failure. |
| 6786 | if (mode_ == POSITIVE_LOOKUP) { |
ricow@chromium.org | ddd545c | 2011-08-24 12:02:41 +0000 | [diff] [blame] | 6787 | __ mov(result, Operand::Zero()); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6788 | __ Ret(); |
| 6789 | } |
| 6790 | |
| 6791 | __ bind(&in_dictionary); |
| 6792 | __ mov(result, Operand(1)); |
| 6793 | __ Ret(); |
| 6794 | |
| 6795 | __ bind(¬_in_dictionary); |
ricow@chromium.org | ddd545c | 2011-08-24 12:02:41 +0000 | [diff] [blame] | 6796 | __ mov(result, Operand::Zero()); |
lrn@chromium.org | 1c09276 | 2011-05-09 09:42:16 +0000 | [diff] [blame] | 6797 | __ Ret(); |
| 6798 | } |
| 6799 | |
| 6800 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6801 | struct AheadOfTimeWriteBarrierStubList { |
| 6802 | Register object, value, address; |
| 6803 | RememberedSetAction action; |
| 6804 | }; |
| 6805 | |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6806 | #define REG(Name) { kRegister_ ## Name ## _Code } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6807 | |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6808 | static const AheadOfTimeWriteBarrierStubList kAheadOfTime[] = { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6809 | // Used in RegExpExecStub. |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6810 | { REG(r6), REG(r4), REG(r7), EMIT_REMEMBERED_SET }, |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6811 | // Used in CompileArrayPushCall. |
| 6812 | // Also used in StoreIC::GenerateNormal via GenerateDictionaryStore. |
| 6813 | // Also used in KeyedStoreIC::GenerateGeneric. |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6814 | { REG(r3), REG(r4), REG(r5), EMIT_REMEMBERED_SET }, |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6815 | // Used in CompileStoreGlobal. |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6816 | { REG(r4), REG(r1), REG(r2), OMIT_REMEMBERED_SET }, |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6817 | // Used in StoreStubCompiler::CompileStoreField via GenerateStoreField. |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6818 | { REG(r1), REG(r2), REG(r3), EMIT_REMEMBERED_SET }, |
| 6819 | { REG(r3), REG(r2), REG(r1), EMIT_REMEMBERED_SET }, |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6820 | // Used in KeyedStoreStubCompiler::CompileStoreField via GenerateStoreField. |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6821 | { REG(r2), REG(r1), REG(r3), EMIT_REMEMBERED_SET }, |
| 6822 | { REG(r3), REG(r1), REG(r2), EMIT_REMEMBERED_SET }, |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6823 | // KeyedStoreStubCompiler::GenerateStoreFastElement. |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6824 | { REG(r3), REG(r2), REG(r4), EMIT_REMEMBERED_SET }, |
| 6825 | { REG(r2), REG(r3), REG(r4), EMIT_REMEMBERED_SET }, |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 6826 | // ElementsTransitionGenerator::GenerateMapChangeElementTransition |
| 6827 | // and ElementsTransitionGenerator::GenerateSmiToDouble |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 6828 | // and ElementsTransitionGenerator::GenerateDoubleToObject |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6829 | { REG(r2), REG(r3), REG(r9), EMIT_REMEMBERED_SET }, |
| 6830 | { REG(r2), REG(r3), REG(r9), OMIT_REMEMBERED_SET }, |
erik.corry@gmail.com | 394dbcf | 2011-10-27 07:38:48 +0000 | [diff] [blame] | 6831 | // ElementsTransitionGenerator::GenerateDoubleToObject |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6832 | { REG(r6), REG(r2), REG(r0), EMIT_REMEMBERED_SET }, |
| 6833 | { REG(r2), REG(r6), REG(r9), EMIT_REMEMBERED_SET }, |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 6834 | // StoreArrayLiteralElementStub::Generate |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6835 | { REG(r5), REG(r0), REG(r6), EMIT_REMEMBERED_SET }, |
yangguo@chromium.org | 5a11aaf | 2012-06-20 11:29:00 +0000 | [diff] [blame] | 6836 | // FastNewClosureStub::Generate |
| 6837 | { REG(r2), REG(r4), REG(r1), EMIT_REMEMBERED_SET }, |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 6838 | // StringAddStub::Generate |
| 6839 | { REG(r7), REG(r1), REG(r4), EMIT_REMEMBERED_SET }, |
| 6840 | { REG(r7), REG(r0), REG(r4), EMIT_REMEMBERED_SET }, |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6841 | // Null termination. |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6842 | { REG(no_reg), REG(no_reg), REG(no_reg), EMIT_REMEMBERED_SET} |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6843 | }; |
| 6844 | |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6845 | #undef REG |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6846 | |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 6847 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6848 | bool RecordWriteStub::IsPregenerated() { |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6849 | for (const AheadOfTimeWriteBarrierStubList* entry = kAheadOfTime; |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6850 | !entry->object.is(no_reg); |
| 6851 | entry++) { |
| 6852 | if (object_.is(entry->object) && |
| 6853 | value_.is(entry->value) && |
| 6854 | address_.is(entry->address) && |
| 6855 | remembered_set_action_ == entry->action && |
| 6856 | save_fp_regs_mode_ == kDontSaveFPRegs) { |
| 6857 | return true; |
| 6858 | } |
| 6859 | } |
| 6860 | return false; |
| 6861 | } |
| 6862 | |
| 6863 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 6864 | void StoreBufferOverflowStub::GenerateFixedRegStubsAheadOfTime( |
| 6865 | Isolate* isolate) { |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6866 | StoreBufferOverflowStub stub1(kDontSaveFPRegs); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 6867 | stub1.GetCode(isolate)->set_is_pregenerated(true); |
ulan@chromium.org | 77ca49a | 2013-04-22 09:43:56 +0000 | [diff] [blame] | 6868 | // Hydrogen code stubs need stub2 at snapshot time. |
| 6869 | StoreBufferOverflowStub stub2(kSaveFPRegs); |
| 6870 | stub2.GetCode(isolate)->set_is_pregenerated(true); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6871 | } |
| 6872 | |
| 6873 | |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 6874 | void RecordWriteStub::GenerateFixedRegStubsAheadOfTime(Isolate* isolate) { |
jkummerow@chromium.org | 1456e70 | 2012-03-30 08:38:13 +0000 | [diff] [blame] | 6875 | for (const AheadOfTimeWriteBarrierStubList* entry = kAheadOfTime; |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6876 | !entry->object.is(no_reg); |
| 6877 | entry++) { |
| 6878 | RecordWriteStub stub(entry->object, |
| 6879 | entry->value, |
| 6880 | entry->address, |
| 6881 | entry->action, |
| 6882 | kDontSaveFPRegs); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 6883 | stub.GetCode(isolate)->set_is_pregenerated(true); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6884 | } |
| 6885 | } |
| 6886 | |
| 6887 | |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 6888 | bool CodeStub::CanUseFPRegisters() { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 6889 | return true; // VFP2 is a base requirement for V8 |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 6890 | } |
| 6891 | |
| 6892 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6893 | // Takes the input in 3 registers: address_ value_ and object_. A pointer to |
| 6894 | // the value has just been written into the object, now this stub makes sure |
| 6895 | // we keep the GC informed. The word in the object where the value has been |
| 6896 | // written is in the address register. |
| 6897 | void RecordWriteStub::Generate(MacroAssembler* masm) { |
| 6898 | Label skip_to_incremental_noncompacting; |
| 6899 | Label skip_to_incremental_compacting; |
| 6900 | |
| 6901 | // The first two instructions are generated with labels so as to get the |
| 6902 | // offset fixed up correctly by the bind(Label*) call. We patch it back and |
| 6903 | // forth between a compare instructions (a nop in this position) and the |
| 6904 | // real branch when we start and stop incremental heap marking. |
| 6905 | // See RecordWriteStub::Patch for details. |
mmassi@chromium.org | 7028c05 | 2012-06-13 11:51:58 +0000 | [diff] [blame] | 6906 | { |
| 6907 | // Block literal pool emission, as the position of these two instructions |
| 6908 | // is assumed by the patching code. |
| 6909 | Assembler::BlockConstPoolScope block_const_pool(masm); |
| 6910 | __ b(&skip_to_incremental_noncompacting); |
| 6911 | __ b(&skip_to_incremental_compacting); |
| 6912 | } |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6913 | |
| 6914 | if (remembered_set_action_ == EMIT_REMEMBERED_SET) { |
| 6915 | __ RememberedSetHelper(object_, |
| 6916 | address_, |
| 6917 | value_, |
| 6918 | save_fp_regs_mode_, |
| 6919 | MacroAssembler::kReturnAtEnd); |
| 6920 | } |
| 6921 | __ Ret(); |
| 6922 | |
| 6923 | __ bind(&skip_to_incremental_noncompacting); |
| 6924 | GenerateIncremental(masm, INCREMENTAL); |
| 6925 | |
| 6926 | __ bind(&skip_to_incremental_compacting); |
| 6927 | GenerateIncremental(masm, INCREMENTAL_COMPACTION); |
| 6928 | |
| 6929 | // Initial mode of the stub is expected to be STORE_BUFFER_ONLY. |
| 6930 | // Will be checked in IncrementalMarking::ActivateGeneratedStub. |
| 6931 | ASSERT(Assembler::GetBranchOffset(masm->instr_at(0)) < (1 << 12)); |
| 6932 | ASSERT(Assembler::GetBranchOffset(masm->instr_at(4)) < (1 << 12)); |
| 6933 | PatchBranchIntoNop(masm, 0); |
| 6934 | PatchBranchIntoNop(masm, Assembler::kInstrSize); |
| 6935 | } |
| 6936 | |
| 6937 | |
| 6938 | void RecordWriteStub::GenerateIncremental(MacroAssembler* masm, Mode mode) { |
| 6939 | regs_.Save(masm); |
| 6940 | |
| 6941 | if (remembered_set_action_ == EMIT_REMEMBERED_SET) { |
| 6942 | Label dont_need_remembered_set; |
| 6943 | |
| 6944 | __ ldr(regs_.scratch0(), MemOperand(regs_.address(), 0)); |
| 6945 | __ JumpIfNotInNewSpace(regs_.scratch0(), // Value. |
| 6946 | regs_.scratch0(), |
| 6947 | &dont_need_remembered_set); |
| 6948 | |
| 6949 | __ CheckPageFlag(regs_.object(), |
| 6950 | regs_.scratch0(), |
| 6951 | 1 << MemoryChunk::SCAN_ON_SCAVENGE, |
| 6952 | ne, |
| 6953 | &dont_need_remembered_set); |
| 6954 | |
| 6955 | // First notify the incremental marker if necessary, then update the |
| 6956 | // remembered set. |
| 6957 | CheckNeedsToInformIncrementalMarker( |
| 6958 | masm, kUpdateRememberedSetOnNoNeedToInformIncrementalMarker, mode); |
| 6959 | InformIncrementalMarker(masm, mode); |
| 6960 | regs_.Restore(masm); |
| 6961 | __ RememberedSetHelper(object_, |
| 6962 | address_, |
| 6963 | value_, |
| 6964 | save_fp_regs_mode_, |
| 6965 | MacroAssembler::kReturnAtEnd); |
| 6966 | |
| 6967 | __ bind(&dont_need_remembered_set); |
| 6968 | } |
| 6969 | |
| 6970 | CheckNeedsToInformIncrementalMarker( |
| 6971 | masm, kReturnOnNoNeedToInformIncrementalMarker, mode); |
| 6972 | InformIncrementalMarker(masm, mode); |
| 6973 | regs_.Restore(masm); |
| 6974 | __ Ret(); |
| 6975 | } |
| 6976 | |
| 6977 | |
| 6978 | void RecordWriteStub::InformIncrementalMarker(MacroAssembler* masm, Mode mode) { |
| 6979 | regs_.SaveCallerSaveRegisters(masm, save_fp_regs_mode_); |
| 6980 | int argument_count = 3; |
| 6981 | __ PrepareCallCFunction(argument_count, regs_.scratch0()); |
| 6982 | Register address = |
| 6983 | r0.is(regs_.address()) ? regs_.scratch0() : regs_.address(); |
| 6984 | ASSERT(!address.is(regs_.object())); |
| 6985 | ASSERT(!address.is(r0)); |
| 6986 | __ Move(address, regs_.address()); |
| 6987 | __ Move(r0, regs_.object()); |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 6988 | __ Move(r1, address); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 6989 | __ mov(r2, Operand(ExternalReference::isolate_address(masm->isolate()))); |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 6990 | |
| 6991 | AllowExternalCallThatCantCauseGC scope(masm); |
| 6992 | if (mode == INCREMENTAL_COMPACTION) { |
| 6993 | __ CallCFunction( |
| 6994 | ExternalReference::incremental_evacuation_record_write_function( |
| 6995 | masm->isolate()), |
| 6996 | argument_count); |
| 6997 | } else { |
| 6998 | ASSERT(mode == INCREMENTAL); |
| 6999 | __ CallCFunction( |
| 7000 | ExternalReference::incremental_marking_record_write_function( |
| 7001 | masm->isolate()), |
| 7002 | argument_count); |
| 7003 | } |
| 7004 | regs_.RestoreCallerSaveRegisters(masm, save_fp_regs_mode_); |
| 7005 | } |
| 7006 | |
| 7007 | |
| 7008 | void RecordWriteStub::CheckNeedsToInformIncrementalMarker( |
| 7009 | MacroAssembler* masm, |
| 7010 | OnNoNeedToInformIncrementalMarker on_no_need, |
| 7011 | Mode mode) { |
| 7012 | Label on_black; |
| 7013 | Label need_incremental; |
| 7014 | Label need_incremental_pop_scratch; |
| 7015 | |
verwaest@chromium.org | 33e09c8 | 2012-10-10 17:07:22 +0000 | [diff] [blame] | 7016 | __ and_(regs_.scratch0(), regs_.object(), Operand(~Page::kPageAlignmentMask)); |
| 7017 | __ ldr(regs_.scratch1(), |
| 7018 | MemOperand(regs_.scratch0(), |
| 7019 | MemoryChunk::kWriteBarrierCounterOffset)); |
| 7020 | __ sub(regs_.scratch1(), regs_.scratch1(), Operand(1), SetCC); |
| 7021 | __ str(regs_.scratch1(), |
| 7022 | MemOperand(regs_.scratch0(), |
| 7023 | MemoryChunk::kWriteBarrierCounterOffset)); |
| 7024 | __ b(mi, &need_incremental); |
| 7025 | |
erik.corry@gmail.com | c3b670f | 2011-10-05 21:44:48 +0000 | [diff] [blame] | 7026 | // Let's look at the color of the object: If it is not black we don't have |
| 7027 | // to inform the incremental marker. |
| 7028 | __ JumpIfBlack(regs_.object(), regs_.scratch0(), regs_.scratch1(), &on_black); |
| 7029 | |
| 7030 | regs_.Restore(masm); |
| 7031 | if (on_no_need == kUpdateRememberedSetOnNoNeedToInformIncrementalMarker) { |
| 7032 | __ RememberedSetHelper(object_, |
| 7033 | address_, |
| 7034 | value_, |
| 7035 | save_fp_regs_mode_, |
| 7036 | MacroAssembler::kReturnAtEnd); |
| 7037 | } else { |
| 7038 | __ Ret(); |
| 7039 | } |
| 7040 | |
| 7041 | __ bind(&on_black); |
| 7042 | |
| 7043 | // Get the value from the slot. |
| 7044 | __ ldr(regs_.scratch0(), MemOperand(regs_.address(), 0)); |
| 7045 | |
| 7046 | if (mode == INCREMENTAL_COMPACTION) { |
| 7047 | Label ensure_not_white; |
| 7048 | |
| 7049 | __ CheckPageFlag(regs_.scratch0(), // Contains value. |
| 7050 | regs_.scratch1(), // Scratch. |
| 7051 | MemoryChunk::kEvacuationCandidateMask, |
| 7052 | eq, |
| 7053 | &ensure_not_white); |
| 7054 | |
| 7055 | __ CheckPageFlag(regs_.object(), |
| 7056 | regs_.scratch1(), // Scratch. |
| 7057 | MemoryChunk::kSkipEvacuationSlotsRecordingMask, |
| 7058 | eq, |
| 7059 | &need_incremental); |
| 7060 | |
| 7061 | __ bind(&ensure_not_white); |
| 7062 | } |
| 7063 | |
| 7064 | // We need extra registers for this, so we push the object and the address |
| 7065 | // register temporarily. |
| 7066 | __ Push(regs_.object(), regs_.address()); |
| 7067 | __ EnsureNotWhite(regs_.scratch0(), // The value. |
| 7068 | regs_.scratch1(), // Scratch. |
| 7069 | regs_.object(), // Scratch. |
| 7070 | regs_.address(), // Scratch. |
| 7071 | &need_incremental_pop_scratch); |
| 7072 | __ Pop(regs_.object(), regs_.address()); |
| 7073 | |
| 7074 | regs_.Restore(masm); |
| 7075 | if (on_no_need == kUpdateRememberedSetOnNoNeedToInformIncrementalMarker) { |
| 7076 | __ RememberedSetHelper(object_, |
| 7077 | address_, |
| 7078 | value_, |
| 7079 | save_fp_regs_mode_, |
| 7080 | MacroAssembler::kReturnAtEnd); |
| 7081 | } else { |
| 7082 | __ Ret(); |
| 7083 | } |
| 7084 | |
| 7085 | __ bind(&need_incremental_pop_scratch); |
| 7086 | __ Pop(regs_.object(), regs_.address()); |
| 7087 | |
| 7088 | __ bind(&need_incremental); |
| 7089 | |
| 7090 | // Fall through when we need to inform the incremental marker. |
| 7091 | } |
| 7092 | |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 7093 | |
| 7094 | void StoreArrayLiteralElementStub::Generate(MacroAssembler* masm) { |
| 7095 | // ----------- S t a t e ------------- |
| 7096 | // -- r0 : element value to store |
| 7097 | // -- r1 : array literal |
| 7098 | // -- r2 : map of array literal |
| 7099 | // -- r3 : element index as smi |
| 7100 | // -- r4 : array literal index in function as smi |
| 7101 | // ----------------------------------- |
| 7102 | |
| 7103 | Label element_done; |
| 7104 | Label double_elements; |
| 7105 | Label smi_element; |
| 7106 | Label slow_elements; |
| 7107 | Label fast_elements; |
| 7108 | |
| 7109 | __ CheckFastElements(r2, r5, &double_elements); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 7110 | // FAST_*_SMI_ELEMENTS or FAST_*_ELEMENTS |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 7111 | __ JumpIfSmi(r0, &smi_element); |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 7112 | __ CheckFastSmiElements(r2, r5, &fast_elements); |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 7113 | |
| 7114 | // Store into the array literal requires a elements transition. Call into |
| 7115 | // the runtime. |
| 7116 | __ bind(&slow_elements); |
| 7117 | // call. |
| 7118 | __ Push(r1, r3, r0); |
| 7119 | __ ldr(r5, MemOperand(fp, JavaScriptFrameConstants::kFunctionOffset)); |
| 7120 | __ ldr(r5, FieldMemOperand(r5, JSFunction::kLiteralsOffset)); |
| 7121 | __ Push(r5, r4); |
| 7122 | __ TailCallRuntime(Runtime::kStoreArrayLiteralElement, 5, 1); |
| 7123 | |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 7124 | // Array literal has ElementsKind of FAST_*_ELEMENTS and value is an object. |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 7125 | __ bind(&fast_elements); |
| 7126 | __ ldr(r5, FieldMemOperand(r1, JSObject::kElementsOffset)); |
| 7127 | __ add(r6, r5, Operand(r3, LSL, kPointerSizeLog2 - kSmiTagSize)); |
| 7128 | __ add(r6, r6, Operand(FixedArray::kHeaderSize - kHeapObjectTag)); |
| 7129 | __ str(r0, MemOperand(r6, 0)); |
| 7130 | // Update the write barrier for the array store. |
| 7131 | __ RecordWrite(r5, r6, r0, kLRHasNotBeenSaved, kDontSaveFPRegs, |
| 7132 | EMIT_REMEMBERED_SET, OMIT_SMI_CHECK); |
| 7133 | __ Ret(); |
| 7134 | |
svenpanne@chromium.org | 830d30c | 2012-05-29 13:20:14 +0000 | [diff] [blame] | 7135 | // Array literal has ElementsKind of FAST_*_SMI_ELEMENTS or FAST_*_ELEMENTS, |
| 7136 | // and value is Smi. |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 7137 | __ bind(&smi_element); |
| 7138 | __ ldr(r5, FieldMemOperand(r1, JSObject::kElementsOffset)); |
| 7139 | __ add(r6, r5, Operand(r3, LSL, kPointerSizeLog2 - kSmiTagSize)); |
| 7140 | __ str(r0, FieldMemOperand(r6, FixedArray::kHeaderSize)); |
| 7141 | __ Ret(); |
| 7142 | |
| 7143 | // Array literal has ElementsKind of FAST_DOUBLE_ELEMENTS. |
| 7144 | __ bind(&double_elements); |
| 7145 | __ ldr(r5, FieldMemOperand(r1, JSObject::kElementsOffset)); |
ulan@chromium.org | 32d7dba | 2013-04-24 10:59:06 +0000 | [diff] [blame] | 7146 | __ StoreNumberToDoubleElements(r0, r3, r5, r6, &slow_elements); |
jkummerow@chromium.org | 04e4f1e | 2011-11-14 13:36:17 +0000 | [diff] [blame] | 7147 | __ Ret(); |
| 7148 | } |
| 7149 | |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 7150 | |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 7151 | void StubFailureTrampolineStub::Generate(MacroAssembler* masm) { |
mstarzinger@chromium.org | e27d617 | 2013-04-17 11:51:44 +0000 | [diff] [blame] | 7152 | CEntryStub ces(1, fp_registers_ ? kSaveFPRegs : kDontSaveFPRegs); |
hpayer@chromium.org | 8432c91 | 2013-02-28 15:55:26 +0000 | [diff] [blame] | 7153 | __ Call(ces.GetCode(masm->isolate()), RelocInfo::CODE_TARGET); |
mmassi@chromium.org | 2f0efde | 2013-02-06 14:12:58 +0000 | [diff] [blame] | 7154 | int parameter_count_offset = |
| 7155 | StubFailureTrampolineFrame::kCallerStackParameterCountFrameOffset; |
| 7156 | __ ldr(r1, MemOperand(fp, parameter_count_offset)); |
mstarzinger@chromium.org | f705b50 | 2013-04-04 11:38:09 +0000 | [diff] [blame] | 7157 | if (function_mode_ == JS_FUNCTION_STUB_MODE) { |
| 7158 | __ add(r1, r1, Operand(1)); |
| 7159 | } |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 7160 | masm->LeaveFrame(StackFrame::STUB_FAILURE_TRAMPOLINE); |
mmassi@chromium.org | 2f0efde | 2013-02-06 14:12:58 +0000 | [diff] [blame] | 7161 | __ mov(r1, Operand(r1, LSL, kPointerSizeLog2)); |
| 7162 | __ add(sp, sp, r1); |
mstarzinger@chromium.org | 068ea0a | 2013-01-30 09:39:44 +0000 | [diff] [blame] | 7163 | __ Ret(); |
| 7164 | } |
| 7165 | |
| 7166 | |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 7167 | void ProfileEntryHookStub::MaybeCallEntryHook(MacroAssembler* masm) { |
| 7168 | if (entry_hook_ != NULL) { |
ulan@chromium.org | 8e8d882 | 2012-11-23 14:36:46 +0000 | [diff] [blame] | 7169 | PredictableCodeSizeScope predictable(masm, 4 * Assembler::kInstrSize); |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 7170 | ProfileEntryHookStub stub; |
| 7171 | __ push(lr); |
| 7172 | __ CallStub(&stub); |
| 7173 | __ pop(lr); |
| 7174 | } |
| 7175 | } |
| 7176 | |
| 7177 | |
| 7178 | void ProfileEntryHookStub::Generate(MacroAssembler* masm) { |
| 7179 | // The entry hook is a "push lr" instruction, followed by a call. |
| 7180 | const int32_t kReturnAddressDistanceFromFunctionStart = |
rossberg@chromium.org | 89e18f5 | 2012-10-22 13:09:53 +0000 | [diff] [blame] | 7181 | 3 * Assembler::kInstrSize; |
verwaest@chromium.org | 753aee4 | 2012-07-17 16:15:42 +0000 | [diff] [blame] | 7182 | |
| 7183 | // Save live volatile registers. |
| 7184 | __ Push(lr, r5, r1); |
| 7185 | const int32_t kNumSavedRegs = 3; |
| 7186 | |
| 7187 | // Compute the function's address for the first argument. |
| 7188 | __ sub(r0, lr, Operand(kReturnAddressDistanceFromFunctionStart)); |
| 7189 | |
| 7190 | // The caller's return address is above the saved temporaries. |
| 7191 | // Grab that for the second argument to the hook. |
| 7192 | __ add(r1, sp, Operand(kNumSavedRegs * kPointerSize)); |
| 7193 | |
| 7194 | // Align the stack if necessary. |
| 7195 | int frame_alignment = masm->ActivationFrameAlignment(); |
| 7196 | if (frame_alignment > kPointerSize) { |
| 7197 | __ mov(r5, sp); |
| 7198 | ASSERT(IsPowerOf2(frame_alignment)); |
| 7199 | __ and_(sp, sp, Operand(-frame_alignment)); |
| 7200 | } |
| 7201 | |
| 7202 | #if defined(V8_HOST_ARCH_ARM) |
| 7203 | __ mov(ip, Operand(reinterpret_cast<int32_t>(&entry_hook_))); |
| 7204 | __ ldr(ip, MemOperand(ip)); |
| 7205 | #else |
| 7206 | // Under the simulator we need to indirect the entry hook through a |
| 7207 | // trampoline function at a known address. |
| 7208 | Address trampoline_address = reinterpret_cast<Address>( |
| 7209 | reinterpret_cast<intptr_t>(EntryHookTrampoline)); |
| 7210 | ApiFunction dispatcher(trampoline_address); |
| 7211 | __ mov(ip, Operand(ExternalReference(&dispatcher, |
| 7212 | ExternalReference::BUILTIN_CALL, |
| 7213 | masm->isolate()))); |
| 7214 | #endif |
| 7215 | __ Call(ip); |
| 7216 | |
| 7217 | // Restore the stack pointer if needed. |
| 7218 | if (frame_alignment > kPointerSize) { |
| 7219 | __ mov(sp, r5); |
| 7220 | } |
| 7221 | |
| 7222 | __ Pop(lr, r5, r1); |
| 7223 | __ Ret(); |
| 7224 | } |
| 7225 | |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 7226 | |
| 7227 | template<class T> |
| 7228 | static void CreateArrayDispatch(MacroAssembler* masm) { |
| 7229 | int last_index = GetSequenceIndexFromFastElementsKind( |
| 7230 | TERMINAL_FAST_ELEMENTS_KIND); |
| 7231 | for (int i = 0; i <= last_index; ++i) { |
| 7232 | Label next; |
| 7233 | ElementsKind kind = GetFastElementsKindFromSequenceIndex(i); |
| 7234 | __ cmp(r3, Operand(kind)); |
| 7235 | __ b(ne, &next); |
| 7236 | T stub(kind); |
| 7237 | __ TailCallStub(&stub); |
| 7238 | __ bind(&next); |
| 7239 | } |
| 7240 | |
| 7241 | // If we reached this point there is a problem. |
| 7242 | __ Abort("Unexpected ElementsKind in array constructor"); |
| 7243 | } |
| 7244 | |
| 7245 | |
| 7246 | static void CreateArrayDispatchOneArgument(MacroAssembler* masm) { |
| 7247 | // r2 - type info cell |
| 7248 | // r3 - kind |
| 7249 | // r0 - number of arguments |
| 7250 | // r1 - constructor? |
| 7251 | // sp[0] - last argument |
| 7252 | ASSERT(FAST_SMI_ELEMENTS == 0); |
| 7253 | ASSERT(FAST_HOLEY_SMI_ELEMENTS == 1); |
| 7254 | ASSERT(FAST_ELEMENTS == 2); |
| 7255 | ASSERT(FAST_HOLEY_ELEMENTS == 3); |
| 7256 | ASSERT(FAST_DOUBLE_ELEMENTS == 4); |
| 7257 | ASSERT(FAST_HOLEY_DOUBLE_ELEMENTS == 5); |
| 7258 | |
| 7259 | Handle<Object> undefined_sentinel( |
| 7260 | masm->isolate()->heap()->undefined_value(), |
| 7261 | masm->isolate()); |
| 7262 | |
| 7263 | // is the low bit set? If so, we are holey and that is good. |
| 7264 | __ tst(r3, Operand(1)); |
| 7265 | Label normal_sequence; |
| 7266 | __ b(ne, &normal_sequence); |
| 7267 | |
| 7268 | // look at the first argument |
| 7269 | __ ldr(r5, MemOperand(sp, 0)); |
| 7270 | __ cmp(r5, Operand::Zero()); |
| 7271 | __ b(eq, &normal_sequence); |
| 7272 | |
| 7273 | // We are going to create a holey array, but our kind is non-holey. |
| 7274 | // Fix kind and retry |
| 7275 | __ add(r3, r3, Operand(1)); |
| 7276 | __ cmp(r2, Operand(undefined_sentinel)); |
| 7277 | __ b(eq, &normal_sequence); |
| 7278 | |
| 7279 | // Save the resulting elements kind in type info |
| 7280 | __ SmiTag(r3); |
| 7281 | __ str(r3, FieldMemOperand(r2, kPointerSize)); |
| 7282 | __ SmiUntag(r3); |
| 7283 | |
| 7284 | __ bind(&normal_sequence); |
| 7285 | int last_index = GetSequenceIndexFromFastElementsKind( |
| 7286 | TERMINAL_FAST_ELEMENTS_KIND); |
| 7287 | for (int i = 0; i <= last_index; ++i) { |
| 7288 | Label next; |
| 7289 | ElementsKind kind = GetFastElementsKindFromSequenceIndex(i); |
| 7290 | __ cmp(r3, Operand(kind)); |
| 7291 | __ b(ne, &next); |
| 7292 | ArraySingleArgumentConstructorStub stub(kind); |
| 7293 | __ TailCallStub(&stub); |
| 7294 | __ bind(&next); |
| 7295 | } |
| 7296 | |
| 7297 | // If we reached this point there is a problem. |
| 7298 | __ Abort("Unexpected ElementsKind in array constructor"); |
| 7299 | } |
| 7300 | |
| 7301 | |
| 7302 | template<class T> |
| 7303 | static void ArrayConstructorStubAheadOfTimeHelper(Isolate* isolate) { |
| 7304 | int to_index = GetSequenceIndexFromFastElementsKind( |
| 7305 | TERMINAL_FAST_ELEMENTS_KIND); |
| 7306 | for (int i = 0; i <= to_index; ++i) { |
| 7307 | ElementsKind kind = GetFastElementsKindFromSequenceIndex(i); |
| 7308 | T stub(kind); |
| 7309 | stub.GetCode(isolate)->set_is_pregenerated(true); |
| 7310 | } |
| 7311 | } |
| 7312 | |
| 7313 | |
| 7314 | void ArrayConstructorStubBase::GenerateStubsAheadOfTime(Isolate* isolate) { |
| 7315 | ArrayConstructorStubAheadOfTimeHelper<ArrayNoArgumentConstructorStub>( |
| 7316 | isolate); |
| 7317 | ArrayConstructorStubAheadOfTimeHelper<ArraySingleArgumentConstructorStub>( |
| 7318 | isolate); |
| 7319 | ArrayConstructorStubAheadOfTimeHelper<ArrayNArgumentsConstructorStub>( |
| 7320 | isolate); |
| 7321 | } |
| 7322 | |
| 7323 | |
| 7324 | void ArrayConstructorStub::Generate(MacroAssembler* masm) { |
| 7325 | // ----------- S t a t e ------------- |
| 7326 | // -- r0 : argc (only if argument_count_ == ANY) |
| 7327 | // -- r1 : constructor |
| 7328 | // -- r2 : type info cell |
| 7329 | // -- sp[0] : return address |
| 7330 | // -- sp[4] : last argument |
| 7331 | // ----------------------------------- |
| 7332 | Handle<Object> undefined_sentinel( |
| 7333 | masm->isolate()->heap()->undefined_value(), |
| 7334 | masm->isolate()); |
| 7335 | |
| 7336 | if (FLAG_debug_code) { |
| 7337 | // The array construct code is only set for the global and natives |
| 7338 | // builtin Array functions which always have maps. |
| 7339 | |
| 7340 | // Initial map for the builtin Array function should be a map. |
| 7341 | __ ldr(r3, FieldMemOperand(r1, JSFunction::kPrototypeOrInitialMapOffset)); |
| 7342 | // Will both indicate a NULL and a Smi. |
| 7343 | __ tst(r3, Operand(kSmiTagMask)); |
| 7344 | __ Assert(ne, "Unexpected initial map for Array function"); |
| 7345 | __ CompareObjectType(r3, r3, r4, MAP_TYPE); |
| 7346 | __ Assert(eq, "Unexpected initial map for Array function"); |
| 7347 | |
| 7348 | // We should either have undefined in ebx or a valid jsglobalpropertycell |
| 7349 | Label okay_here; |
| 7350 | Handle<Map> global_property_cell_map( |
| 7351 | masm->isolate()->heap()->global_property_cell_map()); |
| 7352 | __ cmp(r2, Operand(undefined_sentinel)); |
| 7353 | __ b(eq, &okay_here); |
| 7354 | __ ldr(r3, FieldMemOperand(r2, 0)); |
| 7355 | __ cmp(r3, Operand(global_property_cell_map)); |
| 7356 | __ Assert(eq, "Expected property cell in register ebx"); |
| 7357 | __ bind(&okay_here); |
| 7358 | } |
| 7359 | |
| 7360 | if (FLAG_optimize_constructed_arrays) { |
| 7361 | Label no_info, switch_ready; |
| 7362 | // Get the elements kind and case on that. |
| 7363 | __ cmp(r2, Operand(undefined_sentinel)); |
| 7364 | __ b(eq, &no_info); |
ulan@chromium.org | 57ff881 | 2013-05-10 08:16:55 +0000 | [diff] [blame^] | 7365 | __ ldr(r3, FieldMemOperand(r2, JSGlobalPropertyCell::kValueOffset)); |
| 7366 | __ JumpIfNotSmi(r3, &no_info); |
danno@chromium.org | ca29dd8 | 2013-04-26 11:59:48 +0000 | [diff] [blame] | 7367 | __ SmiUntag(r3); |
| 7368 | __ jmp(&switch_ready); |
| 7369 | __ bind(&no_info); |
| 7370 | __ mov(r3, Operand(GetInitialFastElementsKind())); |
| 7371 | __ bind(&switch_ready); |
| 7372 | |
| 7373 | if (argument_count_ == ANY) { |
| 7374 | Label not_zero_case, not_one_case; |
| 7375 | __ tst(r0, r0); |
| 7376 | __ b(ne, ¬_zero_case); |
| 7377 | CreateArrayDispatch<ArrayNoArgumentConstructorStub>(masm); |
| 7378 | |
| 7379 | __ bind(¬_zero_case); |
| 7380 | __ cmp(r0, Operand(1)); |
| 7381 | __ b(gt, ¬_one_case); |
| 7382 | CreateArrayDispatchOneArgument(masm); |
| 7383 | |
| 7384 | __ bind(¬_one_case); |
| 7385 | CreateArrayDispatch<ArrayNArgumentsConstructorStub>(masm); |
| 7386 | } else if (argument_count_ == NONE) { |
| 7387 | CreateArrayDispatch<ArrayNoArgumentConstructorStub>(masm); |
| 7388 | } else if (argument_count_ == ONE) { |
| 7389 | CreateArrayDispatchOneArgument(masm); |
| 7390 | } else if (argument_count_ == MORE_THAN_ONE) { |
| 7391 | CreateArrayDispatch<ArrayNArgumentsConstructorStub>(masm); |
| 7392 | } else { |
| 7393 | UNREACHABLE(); |
| 7394 | } |
| 7395 | } else { |
| 7396 | Label generic_constructor; |
| 7397 | // Run the native code for the Array function called as a constructor. |
| 7398 | ArrayNativeCode(masm, &generic_constructor); |
| 7399 | |
| 7400 | // Jump to the generic construct code in case the specialized code cannot |
| 7401 | // handle the construction. |
| 7402 | __ bind(&generic_constructor); |
| 7403 | Handle<Code> generic_construct_stub = |
| 7404 | masm->isolate()->builtins()->JSConstructStubGeneric(); |
| 7405 | __ Jump(generic_construct_stub, RelocInfo::CODE_TARGET); |
| 7406 | } |
| 7407 | } |
| 7408 | |
| 7409 | |
ricow@chromium.org | 65fae84 | 2010-08-25 15:26:24 +0000 | [diff] [blame] | 7410 | #undef __ |
| 7411 | |
| 7412 | } } // namespace v8::internal |
| 7413 | |
| 7414 | #endif // V8_TARGET_ARCH_ARM |