Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1 | // Copyright 2012 the V8 project authors. All rights reserved. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +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" |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 29 | |
| 30 | #if defined(V8_TARGET_ARCH_X64) |
| 31 | |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 32 | #include "codegen.h" |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 33 | #include "deoptimizer.h" |
| 34 | #include "full-codegen.h" |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 35 | |
| 36 | namespace v8 { |
| 37 | namespace internal { |
| 38 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 39 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 40 | #define __ ACCESS_MASM(masm) |
| 41 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 42 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 43 | void Builtins::Generate_Adaptor(MacroAssembler* masm, |
| 44 | CFunctionId id, |
| 45 | BuiltinExtraArguments extra_args) { |
| 46 | // ----------- S t a t e ------------- |
| 47 | // -- rax : number of arguments excluding receiver |
| 48 | // -- rdi : called function (only guaranteed when |
| 49 | // extra_args requires it) |
| 50 | // -- rsi : context |
| 51 | // -- rsp[0] : return address |
| 52 | // -- rsp[8] : last argument |
| 53 | // -- ... |
| 54 | // -- rsp[8 * argc] : first argument (argc == rax) |
| 55 | // -- rsp[8 * (argc +1)] : receiver |
| 56 | // ----------------------------------- |
| 57 | |
| 58 | // Insert extra arguments. |
| 59 | int num_extra_args = 0; |
| 60 | if (extra_args == NEEDS_CALLED_FUNCTION) { |
| 61 | num_extra_args = 1; |
| 62 | __ pop(kScratchRegister); // Save return address. |
| 63 | __ push(rdi); |
| 64 | __ push(kScratchRegister); // Restore return address. |
| 65 | } else { |
| 66 | ASSERT(extra_args == NO_EXTRA_ARGUMENTS); |
| 67 | } |
| 68 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 69 | // JumpToExternalReference expects rax to contain the number of arguments |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 70 | // including the receiver and the extra arguments. |
| 71 | __ addq(rax, Immediate(num_extra_args + 1)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 72 | __ JumpToExternalReference(ExternalReference(id, masm->isolate()), 1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 76 | static void Generate_JSConstructStubHelper(MacroAssembler* masm, |
| 77 | bool is_api_function, |
| 78 | bool count_constructions) { |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 79 | // ----------- S t a t e ------------- |
| 80 | // -- rax: number of arguments |
| 81 | // -- rdi: constructor function |
| 82 | // ----------------------------------- |
| 83 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 84 | // Should never count constructions for api objects. |
| 85 | ASSERT(!is_api_function || !count_constructions); |
| 86 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 87 | // Enter a construct frame. |
| 88 | { |
| 89 | FrameScope scope(masm, StackFrame::CONSTRUCT); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 90 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 91 | // Store a smi-tagged arguments count on the stack. |
| 92 | __ Integer32ToSmi(rax, rax); |
| 93 | __ push(rax); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 94 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 95 | // Push the function to invoke on the stack. |
| 96 | __ push(rdi); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 97 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 98 | // Try to allocate the object without transitioning into C code. If any of |
| 99 | // the preconditions is not met, the code bails out to the runtime call. |
| 100 | Label rt_call, allocated; |
| 101 | if (FLAG_inline_new) { |
| 102 | Label undo_allocation; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 103 | |
| 104 | #ifdef ENABLE_DEBUGGER_SUPPORT |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 105 | ExternalReference debug_step_in_fp = |
| 106 | ExternalReference::debug_step_in_fp_address(masm->isolate()); |
| 107 | __ movq(kScratchRegister, debug_step_in_fp); |
| 108 | __ cmpq(Operand(kScratchRegister, 0), Immediate(0)); |
| 109 | __ j(not_equal, &rt_call); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 110 | #endif |
| 111 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 112 | // Verified that the constructor is a JSFunction. |
| 113 | // Load the initial map and verify that it is in fact a map. |
| 114 | // rdi: constructor |
| 115 | __ movq(rax, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 116 | // Will both indicate a NULL and a Smi |
| 117 | ASSERT(kSmiTag == 0); |
| 118 | __ JumpIfSmi(rax, &rt_call); |
| 119 | // rdi: constructor |
| 120 | // rax: initial map (if proven valid below) |
| 121 | __ CmpObjectType(rax, MAP_TYPE, rbx); |
| 122 | __ j(not_equal, &rt_call); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 123 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 124 | // Check that the constructor is not constructing a JSFunction (see |
| 125 | // comments in Runtime_NewObject in runtime.cc). In which case the |
| 126 | // initial map's instance type would be JS_FUNCTION_TYPE. |
| 127 | // rdi: constructor |
| 128 | // rax: initial map |
| 129 | __ CmpInstanceType(rax, JS_FUNCTION_TYPE); |
| 130 | __ j(equal, &rt_call); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 131 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 132 | if (count_constructions) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 133 | Label allocate; |
| 134 | // Decrease generous allocation count. |
| 135 | __ movq(rcx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); |
| 136 | __ decb(FieldOperand(rcx, |
| 137 | SharedFunctionInfo::kConstructionCountOffset)); |
| 138 | __ j(not_zero, &allocate); |
| 139 | |
| 140 | __ push(rax); |
| 141 | __ push(rdi); |
| 142 | |
| 143 | __ push(rdi); // constructor |
| 144 | // The call will replace the stub, so the countdown is only done once. |
| 145 | __ CallRuntime(Runtime::kFinalizeInstanceSize, 1); |
| 146 | |
| 147 | __ pop(rdi); |
| 148 | __ pop(rax); |
| 149 | |
| 150 | __ bind(&allocate); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 151 | } |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 152 | |
| 153 | // Now allocate the JSObject on the heap. |
| 154 | __ movzxbq(rdi, FieldOperand(rax, Map::kInstanceSizeOffset)); |
| 155 | __ shl(rdi, Immediate(kPointerSizeLog2)); |
| 156 | // rdi: size of new object |
| 157 | __ AllocateInNewSpace(rdi, |
| 158 | rbx, |
| 159 | rdi, |
| 160 | no_reg, |
| 161 | &rt_call, |
| 162 | NO_ALLOCATION_FLAGS); |
| 163 | // Allocated the JSObject, now initialize the fields. |
| 164 | // rax: initial map |
| 165 | // rbx: JSObject (not HeapObject tagged - the actual address). |
| 166 | // rdi: start of next object |
| 167 | __ movq(Operand(rbx, JSObject::kMapOffset), rax); |
| 168 | __ LoadRoot(rcx, Heap::kEmptyFixedArrayRootIndex); |
| 169 | __ movq(Operand(rbx, JSObject::kPropertiesOffset), rcx); |
| 170 | __ movq(Operand(rbx, JSObject::kElementsOffset), rcx); |
| 171 | // Set extra fields in the newly allocated object. |
| 172 | // rax: initial map |
| 173 | // rbx: JSObject |
| 174 | // rdi: start of next object |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 175 | __ lea(rcx, Operand(rbx, JSObject::kHeaderSize)); |
Ben Murdoch | 85b7179 | 2012-04-11 18:30:58 +0100 | [diff] [blame] | 176 | __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 177 | if (count_constructions) { |
| 178 | __ movzxbq(rsi, |
| 179 | FieldOperand(rax, Map::kPreAllocatedPropertyFieldsOffset)); |
| 180 | __ lea(rsi, |
| 181 | Operand(rbx, rsi, times_pointer_size, JSObject::kHeaderSize)); |
| 182 | // rsi: offset of first field after pre-allocated fields |
| 183 | if (FLAG_debug_code) { |
| 184 | __ cmpq(rsi, rdi); |
| 185 | __ Assert(less_equal, |
| 186 | "Unexpected number of pre-allocated property fields."); |
| 187 | } |
| 188 | __ InitializeFieldsWithFiller(rcx, rsi, rdx); |
| 189 | __ LoadRoot(rdx, Heap::kOnePointerFillerMapRootIndex); |
| 190 | } |
| 191 | __ InitializeFieldsWithFiller(rcx, rdi, rdx); |
| 192 | |
| 193 | // Add the object tag to make the JSObject real, so that we can continue |
| 194 | // and jump into the continuation code at any time from now on. Any |
| 195 | // failures need to undo the allocation, so that the heap is in a |
| 196 | // consistent state and verifiable. |
| 197 | // rax: initial map |
| 198 | // rbx: JSObject |
| 199 | // rdi: start of next object |
| 200 | __ or_(rbx, Immediate(kHeapObjectTag)); |
| 201 | |
| 202 | // Check if a non-empty properties array is needed. |
| 203 | // Allocate and initialize a FixedArray if it is. |
| 204 | // rax: initial map |
| 205 | // rbx: JSObject |
| 206 | // rdi: start of next object |
| 207 | // Calculate total properties described map. |
| 208 | __ movzxbq(rdx, FieldOperand(rax, Map::kUnusedPropertyFieldsOffset)); |
| 209 | __ movzxbq(rcx, |
| 210 | FieldOperand(rax, Map::kPreAllocatedPropertyFieldsOffset)); |
| 211 | __ addq(rdx, rcx); |
| 212 | // Calculate unused properties past the end of the in-object properties. |
| 213 | __ movzxbq(rcx, FieldOperand(rax, Map::kInObjectPropertiesOffset)); |
| 214 | __ subq(rdx, rcx); |
| 215 | // Done if no extra properties are to be allocated. |
| 216 | __ j(zero, &allocated); |
| 217 | __ Assert(positive, "Property allocation count failed."); |
| 218 | |
| 219 | // Scale the number of elements by pointer size and add the header for |
| 220 | // FixedArrays to the start of the next object calculation from above. |
| 221 | // rbx: JSObject |
| 222 | // rdi: start of next object (will be start of FixedArray) |
| 223 | // rdx: number of elements in properties array |
| 224 | __ AllocateInNewSpace(FixedArray::kHeaderSize, |
| 225 | times_pointer_size, |
| 226 | rdx, |
| 227 | rdi, |
| 228 | rax, |
| 229 | no_reg, |
| 230 | &undo_allocation, |
| 231 | RESULT_CONTAINS_TOP); |
| 232 | |
| 233 | // Initialize the FixedArray. |
| 234 | // rbx: JSObject |
| 235 | // rdi: FixedArray |
| 236 | // rdx: number of elements |
| 237 | // rax: start of next object |
| 238 | __ LoadRoot(rcx, Heap::kFixedArrayMapRootIndex); |
| 239 | __ movq(Operand(rdi, HeapObject::kMapOffset), rcx); // setup the map |
| 240 | __ Integer32ToSmi(rdx, rdx); |
| 241 | __ movq(Operand(rdi, FixedArray::kLengthOffset), rdx); // and length |
| 242 | |
| 243 | // Initialize the fields to undefined. |
| 244 | // rbx: JSObject |
| 245 | // rdi: FixedArray |
| 246 | // rax: start of next object |
| 247 | // rdx: number of elements |
| 248 | { Label loop, entry; |
| 249 | __ LoadRoot(rdx, Heap::kUndefinedValueRootIndex); |
| 250 | __ lea(rcx, Operand(rdi, FixedArray::kHeaderSize)); |
| 251 | __ jmp(&entry); |
| 252 | __ bind(&loop); |
| 253 | __ movq(Operand(rcx, 0), rdx); |
| 254 | __ addq(rcx, Immediate(kPointerSize)); |
| 255 | __ bind(&entry); |
| 256 | __ cmpq(rcx, rax); |
| 257 | __ j(below, &loop); |
| 258 | } |
| 259 | |
| 260 | // Store the initialized FixedArray into the properties field of |
| 261 | // the JSObject |
| 262 | // rbx: JSObject |
| 263 | // rdi: FixedArray |
| 264 | __ or_(rdi, Immediate(kHeapObjectTag)); // add the heap tag |
| 265 | __ movq(FieldOperand(rbx, JSObject::kPropertiesOffset), rdi); |
| 266 | |
| 267 | |
| 268 | // Continue with JSObject being successfully allocated |
| 269 | // rbx: JSObject |
| 270 | __ jmp(&allocated); |
| 271 | |
| 272 | // Undo the setting of the new top so that the heap is verifiable. For |
| 273 | // example, the map's unused properties potentially do not match the |
| 274 | // allocated objects unused properties. |
| 275 | // rbx: JSObject (previous new top) |
| 276 | __ bind(&undo_allocation); |
| 277 | __ UndoAllocationInNewSpace(rbx); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 278 | } |
| 279 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 280 | // Allocate the new receiver object using the runtime call. |
| 281 | // rdi: function (constructor) |
| 282 | __ bind(&rt_call); |
| 283 | // Must restore rdi (constructor) before calling runtime. |
| 284 | __ movq(rdi, Operand(rsp, 0)); |
| 285 | __ push(rdi); |
| 286 | __ CallRuntime(Runtime::kNewObject, 1); |
| 287 | __ movq(rbx, rax); // store result in rbx |
Ben Murdoch | 5d4cdbf | 2012-04-11 10:23:59 +0100 | [diff] [blame] | 288 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 289 | // New object allocated. |
| 290 | // rbx: newly allocated object |
| 291 | __ bind(&allocated); |
| 292 | // Retrieve the function from the stack. |
| 293 | __ pop(rdi); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 294 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 295 | // Retrieve smi-tagged arguments count from the stack. |
| 296 | __ movq(rax, Operand(rsp, 0)); |
| 297 | __ SmiToInteger32(rax, rax); |
Ben Murdoch | 592a9fc | 2012-03-05 11:04:45 +0000 | [diff] [blame] | 298 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 299 | // Push the allocated receiver to the stack. We need two copies |
| 300 | // because we may have to return the original one and the calling |
| 301 | // conventions dictate that the called function pops the receiver. |
| 302 | __ push(rbx); |
| 303 | __ push(rbx); |
| 304 | |
| 305 | // Set up pointer to last argument. |
| 306 | __ lea(rbx, Operand(rbp, StandardFrameConstants::kCallerSPOffset)); |
| 307 | |
| 308 | // Copy arguments and receiver to the expression stack. |
| 309 | Label loop, entry; |
| 310 | __ movq(rcx, rax); |
| 311 | __ jmp(&entry); |
| 312 | __ bind(&loop); |
| 313 | __ push(Operand(rbx, rcx, times_pointer_size, 0)); |
| 314 | __ bind(&entry); |
| 315 | __ decq(rcx); |
| 316 | __ j(greater_equal, &loop); |
| 317 | |
| 318 | // Call the function. |
| 319 | if (is_api_function) { |
| 320 | __ movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
| 321 | Handle<Code> code = |
| 322 | masm->isolate()->builtins()->HandleApiCallConstruct(); |
| 323 | ParameterCount expected(0); |
| 324 | __ InvokeCode(code, expected, expected, RelocInfo::CODE_TARGET, |
| 325 | CALL_FUNCTION, NullCallWrapper(), CALL_AS_METHOD); |
| 326 | } else { |
| 327 | ParameterCount actual(rax); |
| 328 | __ InvokeFunction(rdi, actual, CALL_FUNCTION, |
| 329 | NullCallWrapper(), CALL_AS_METHOD); |
| 330 | } |
| 331 | |
| 332 | // Store offset of return address for deoptimizer. |
| 333 | if (!is_api_function && !count_constructions) { |
| 334 | masm->isolate()->heap()->SetConstructStubDeoptPCOffset(masm->pc_offset()); |
| 335 | } |
| 336 | |
| 337 | // Restore context from the frame. |
| 338 | __ movq(rsi, Operand(rbp, StandardFrameConstants::kContextOffset)); |
| 339 | |
| 340 | // If the result is an object (in the ECMA sense), we should get rid |
| 341 | // of the receiver and use the result; see ECMA-262 section 13.2.2-7 |
| 342 | // on page 74. |
| 343 | Label use_receiver, exit; |
| 344 | // If the result is a smi, it is *not* an object in the ECMA sense. |
| 345 | __ JumpIfSmi(rax, &use_receiver); |
| 346 | |
| 347 | // If the type of the result (stored in its map) is less than |
| 348 | // FIRST_SPEC_OBJECT_TYPE, it is not an object in the ECMA sense. |
| 349 | STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
| 350 | __ CmpObjectType(rax, FIRST_SPEC_OBJECT_TYPE, rcx); |
| 351 | __ j(above_equal, &exit); |
| 352 | |
| 353 | // Throw away the result of the constructor invocation and use the |
| 354 | // on-stack receiver as the result. |
| 355 | __ bind(&use_receiver); |
| 356 | __ movq(rax, Operand(rsp, 0)); |
| 357 | |
| 358 | // Restore the arguments count and leave the construct frame. |
| 359 | __ bind(&exit); |
| 360 | __ movq(rbx, Operand(rsp, kPointerSize)); // Get arguments count. |
| 361 | |
| 362 | // Leave construct frame. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 363 | } |
| 364 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 365 | // Remove caller arguments from the stack and return. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 366 | __ pop(rcx); |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 367 | SmiIndex index = masm->SmiToIndex(rbx, rbx, kPointerSizeLog2); |
| 368 | __ lea(rsp, Operand(rsp, index.reg, index.scale, 1 * kPointerSize)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 369 | __ push(rcx); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 370 | Counters* counters = masm->isolate()->counters(); |
| 371 | __ IncrementCounter(counters->constructed_objects(), 1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 372 | __ ret(0); |
| 373 | } |
| 374 | |
| 375 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 376 | void Builtins::Generate_JSConstructStubCountdown(MacroAssembler* masm) { |
| 377 | Generate_JSConstructStubHelper(masm, false, true); |
| 378 | } |
| 379 | |
| 380 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 381 | void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) { |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 382 | Generate_JSConstructStubHelper(masm, false, false); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 383 | } |
| 384 | |
| 385 | |
| 386 | void Builtins::Generate_JSConstructStubApi(MacroAssembler* masm) { |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 387 | Generate_JSConstructStubHelper(masm, true, false); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 388 | } |
| 389 | |
| 390 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 391 | static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm, |
| 392 | bool is_construct) { |
| 393 | // Expects five C++ function parameters. |
| 394 | // - Address entry (ignored) |
| 395 | // - JSFunction* function ( |
| 396 | // - Object* receiver |
| 397 | // - int argc |
| 398 | // - Object*** argv |
| 399 | // (see Handle::Invoke in execution.cc). |
| 400 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 401 | // Open a C++ scope for the FrameScope. |
| 402 | { |
| 403 | // Platform specific argument handling. After this, the stack contains |
| 404 | // an internal frame and the pushed function and receiver, and |
| 405 | // register rax and rbx holds the argument count and argument array, |
| 406 | // while rdi holds the function pointer and rsi the context. |
| 407 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 408 | #ifdef _WIN64 |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 409 | // MSVC parameters in: |
| 410 | // rcx : entry (ignored) |
| 411 | // rdx : function |
| 412 | // r8 : receiver |
| 413 | // r9 : argc |
| 414 | // [rsp+0x20] : argv |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 415 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 416 | // Clear the context before we push it when entering the internal frame. |
| 417 | __ Set(rsi, 0); |
| 418 | // Enter an internal frame. |
| 419 | FrameScope scope(masm, StackFrame::INTERNAL); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 420 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 421 | // Load the function context into rsi. |
| 422 | __ movq(rsi, FieldOperand(rdx, JSFunction::kContextOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 423 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 424 | // Push the function and the receiver onto the stack. |
| 425 | __ push(rdx); |
| 426 | __ push(r8); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 427 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 428 | // Load the number of arguments and setup pointer to the arguments. |
| 429 | __ movq(rax, r9); |
| 430 | // Load the previous frame pointer to access C argument on stack |
| 431 | __ movq(kScratchRegister, Operand(rbp, 0)); |
| 432 | __ movq(rbx, Operand(kScratchRegister, EntryFrameConstants::kArgvOffset)); |
| 433 | // Load the function pointer into rdi. |
| 434 | __ movq(rdi, rdx); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 435 | #else // _WIN64 |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 436 | // GCC parameters in: |
| 437 | // rdi : entry (ignored) |
| 438 | // rsi : function |
| 439 | // rdx : receiver |
| 440 | // rcx : argc |
| 441 | // r8 : argv |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 442 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 443 | __ movq(rdi, rsi); |
| 444 | // rdi : function |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 445 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 446 | // Clear the context before we push it when entering the internal frame. |
| 447 | __ Set(rsi, 0); |
| 448 | // Enter an internal frame. |
| 449 | FrameScope scope(masm, StackFrame::INTERNAL); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 450 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 451 | // Push the function and receiver and setup the context. |
| 452 | __ push(rdi); |
| 453 | __ push(rdx); |
| 454 | __ movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 455 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 456 | // Load the number of arguments and setup pointer to the arguments. |
| 457 | __ movq(rax, rcx); |
| 458 | __ movq(rbx, r8); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 459 | #endif // _WIN64 |
| 460 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 461 | // Current stack contents: |
| 462 | // [rsp + 2 * kPointerSize ... ]: Internal frame |
| 463 | // [rsp + kPointerSize] : function |
| 464 | // [rsp] : receiver |
| 465 | // Current register contents: |
| 466 | // rax : argc |
| 467 | // rbx : argv |
| 468 | // rsi : context |
| 469 | // rdi : function |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 470 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 471 | // Copy arguments to the stack in a loop. |
| 472 | // Register rbx points to array of pointers to handle locations. |
| 473 | // Push the values of these handles. |
| 474 | Label loop, entry; |
| 475 | __ Set(rcx, 0); // Set loop variable to 0. |
| 476 | __ jmp(&entry); |
| 477 | __ bind(&loop); |
| 478 | __ movq(kScratchRegister, Operand(rbx, rcx, times_pointer_size, 0)); |
| 479 | __ push(Operand(kScratchRegister, 0)); // dereference handle |
| 480 | __ addq(rcx, Immediate(1)); |
| 481 | __ bind(&entry); |
| 482 | __ cmpq(rcx, rax); |
| 483 | __ j(not_equal, &loop); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 484 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 485 | // Invoke the code. |
| 486 | if (is_construct) { |
| 487 | // Expects rdi to hold function pointer. |
| 488 | CallConstructStub stub(NO_CALL_FUNCTION_FLAGS); |
| 489 | __ CallStub(&stub); |
| 490 | } else { |
| 491 | ParameterCount actual(rax); |
| 492 | // Function must be in rdi. |
| 493 | __ InvokeFunction(rdi, actual, CALL_FUNCTION, |
| 494 | NullCallWrapper(), CALL_AS_METHOD); |
| 495 | } |
| 496 | // Exit the internal frame. Notice that this also removes the empty |
| 497 | // context and the function left on the stack by the code |
| 498 | // invocation. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 499 | } |
| 500 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 501 | // TODO(X64): Is argument correct? Is there a receiver to remove? |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 502 | __ ret(1 * kPointerSize); // Remove receiver. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 503 | } |
| 504 | |
| 505 | |
| 506 | void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) { |
| 507 | Generate_JSEntryTrampolineHelper(masm, false); |
| 508 | } |
| 509 | |
| 510 | |
| 511 | void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) { |
| 512 | Generate_JSEntryTrampolineHelper(masm, true); |
| 513 | } |
| 514 | |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 515 | |
| 516 | void Builtins::Generate_LazyCompile(MacroAssembler* masm) { |
| 517 | // Enter an internal frame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 518 | { |
| 519 | FrameScope scope(masm, StackFrame::INTERNAL); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 520 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 521 | // Push a copy of the function onto the stack. |
| 522 | __ push(rdi); |
| 523 | // Push call kind information. |
| 524 | __ push(rcx); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 525 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 526 | __ push(rdi); // Function is also the parameter to the runtime call. |
| 527 | __ CallRuntime(Runtime::kLazyCompile, 1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 528 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 529 | // Restore call kind information. |
| 530 | __ pop(rcx); |
| 531 | // Restore receiver. |
| 532 | __ pop(rdi); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 533 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 534 | // Tear down internal frame. |
| 535 | } |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 536 | |
| 537 | // Do a tail-call of the compiled function. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 538 | __ lea(rax, FieldOperand(rax, Code::kHeaderSize)); |
| 539 | __ jmp(rax); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 540 | } |
| 541 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 542 | |
| 543 | void Builtins::Generate_LazyRecompile(MacroAssembler* masm) { |
| 544 | // Enter an internal frame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 545 | { |
| 546 | FrameScope scope(masm, StackFrame::INTERNAL); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 547 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 548 | // Push a copy of the function onto the stack. |
| 549 | __ push(rdi); |
| 550 | // Push call kind information. |
| 551 | __ push(rcx); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 552 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 553 | __ push(rdi); // Function is also the parameter to the runtime call. |
| 554 | __ CallRuntime(Runtime::kLazyRecompile, 1); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 555 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 556 | // Restore call kind information. |
| 557 | __ pop(rcx); |
| 558 | // Restore function. |
| 559 | __ pop(rdi); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 560 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 561 | // Tear down internal frame. |
| 562 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 563 | |
| 564 | // Do a tail-call of the compiled function. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 565 | __ lea(rax, FieldOperand(rax, Code::kHeaderSize)); |
| 566 | __ jmp(rax); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 567 | } |
| 568 | |
| 569 | |
| 570 | static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm, |
| 571 | Deoptimizer::BailoutType type) { |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 572 | // Enter an internal frame. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 573 | { |
| 574 | FrameScope scope(masm, StackFrame::INTERNAL); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 575 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 576 | // Pass the deoptimization type to the runtime system. |
| 577 | __ Push(Smi::FromInt(static_cast<int>(type))); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 578 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 579 | __ CallRuntime(Runtime::kNotifyDeoptimized, 1); |
| 580 | // Tear down internal frame. |
| 581 | } |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 582 | |
| 583 | // Get the full codegen state from the stack and untag it. |
| 584 | __ SmiToInteger32(rcx, Operand(rsp, 1 * kPointerSize)); |
| 585 | |
| 586 | // Switch on the state. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 587 | Label not_no_registers, not_tos_rax; |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 588 | __ cmpq(rcx, Immediate(FullCodeGenerator::NO_REGISTERS)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 589 | __ j(not_equal, ¬_no_registers, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 590 | __ ret(1 * kPointerSize); // Remove state. |
| 591 | |
| 592 | __ bind(¬_no_registers); |
| 593 | __ movq(rax, Operand(rsp, 2 * kPointerSize)); |
| 594 | __ cmpq(rcx, Immediate(FullCodeGenerator::TOS_REG)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 595 | __ j(not_equal, ¬_tos_rax, Label::kNear); |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 596 | __ ret(2 * kPointerSize); // Remove state, rax. |
| 597 | |
| 598 | __ bind(¬_tos_rax); |
| 599 | __ Abort("no cases left"); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 600 | } |
| 601 | |
| 602 | void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) { |
| 603 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); |
| 604 | } |
| 605 | |
| 606 | |
| 607 | void Builtins::Generate_NotifyLazyDeoptimized(MacroAssembler* masm) { |
Steve Block | 1e0659c | 2011-05-24 12:43:12 +0100 | [diff] [blame] | 608 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::LAZY); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 609 | } |
| 610 | |
| 611 | |
| 612 | void Builtins::Generate_NotifyOSR(MacroAssembler* masm) { |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 613 | // For now, we are relying on the fact that Runtime::NotifyOSR |
| 614 | // doesn't do any garbage collection which allows us to save/restore |
| 615 | // the registers without worrying about which of them contain |
| 616 | // pointers. This seems a bit fragile. |
| 617 | __ Pushad(); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 618 | { |
| 619 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 620 | __ CallRuntime(Runtime::kNotifyOSR, 0); |
| 621 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 622 | __ Popad(); |
| 623 | __ ret(0); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 624 | } |
| 625 | |
| 626 | |
| 627 | void Builtins::Generate_FunctionCall(MacroAssembler* masm) { |
| 628 | // Stack Layout: |
| 629 | // rsp[0]: Return address |
| 630 | // rsp[1]: Argument n |
| 631 | // rsp[2]: Argument n-1 |
| 632 | // ... |
| 633 | // rsp[n]: Argument 1 |
| 634 | // rsp[n+1]: Receiver (function to call) |
| 635 | // |
| 636 | // rax contains the number of arguments, n, not counting the receiver. |
| 637 | // |
| 638 | // 1. Make sure we have at least one argument. |
| 639 | { Label done; |
| 640 | __ testq(rax, rax); |
| 641 | __ j(not_zero, &done); |
| 642 | __ pop(rbx); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 643 | __ Push(masm->isolate()->factory()->undefined_value()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 644 | __ push(rbx); |
| 645 | __ incq(rax); |
| 646 | __ bind(&done); |
| 647 | } |
| 648 | |
| 649 | // 2. Get the function to call (passed as receiver) from the stack, check |
| 650 | // if it is a function. |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 651 | Label slow, non_function; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 652 | // The function to call is at position n+1 on the stack. |
| 653 | __ movq(rdi, Operand(rsp, rax, times_pointer_size, 1 * kPointerSize)); |
| 654 | __ JumpIfSmi(rdi, &non_function); |
| 655 | __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 656 | __ j(not_equal, &slow); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 657 | |
| 658 | // 3a. Patch the first argument if necessary when calling a function. |
| 659 | Label shift_arguments; |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 660 | __ Set(rdx, 0); // indicate regular JS_FUNCTION |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 661 | { Label convert_to_object, use_global_receiver, patch_receiver; |
| 662 | // Change context eagerly in case we need the global receiver. |
| 663 | __ movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
| 664 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 665 | // Do not transform the receiver for strict mode functions. |
| 666 | __ movq(rbx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); |
| 667 | __ testb(FieldOperand(rbx, SharedFunctionInfo::kStrictModeByteOffset), |
| 668 | Immediate(1 << SharedFunctionInfo::kStrictModeBitWithinByte)); |
| 669 | __ j(not_equal, &shift_arguments); |
| 670 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 671 | // Do not transform the receiver for natives. |
| 672 | // SharedFunctionInfo is already loaded into rbx. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 673 | __ testb(FieldOperand(rbx, SharedFunctionInfo::kNativeByteOffset), |
| 674 | Immediate(1 << SharedFunctionInfo::kNativeBitWithinByte)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 675 | __ j(not_zero, &shift_arguments); |
| 676 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 677 | // Compute the receiver in non-strict mode. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 678 | __ movq(rbx, Operand(rsp, rax, times_pointer_size, 0)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 679 | __ JumpIfSmi(rbx, &convert_to_object, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 680 | |
| 681 | __ CompareRoot(rbx, Heap::kNullValueRootIndex); |
| 682 | __ j(equal, &use_global_receiver); |
| 683 | __ CompareRoot(rbx, Heap::kUndefinedValueRootIndex); |
| 684 | __ j(equal, &use_global_receiver); |
| 685 | |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame] | 686 | STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
| 687 | __ CmpObjectType(rbx, FIRST_SPEC_OBJECT_TYPE, rcx); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 688 | __ j(above_equal, &shift_arguments); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 689 | |
| 690 | __ bind(&convert_to_object); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 691 | { |
| 692 | // Enter an internal frame in order to preserve argument count. |
| 693 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 694 | __ Integer32ToSmi(rax, rax); |
| 695 | __ push(rax); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 696 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 697 | __ push(rbx); |
| 698 | __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); |
| 699 | __ movq(rbx, rax); |
| 700 | __ Set(rdx, 0); // indicate regular JS_FUNCTION |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 701 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 702 | __ pop(rax); |
| 703 | __ SmiToInteger32(rax, rax); |
| 704 | } |
| 705 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 706 | // Restore the function to rdi. |
| 707 | __ movq(rdi, Operand(rsp, rax, times_pointer_size, 1 * kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 708 | __ jmp(&patch_receiver, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 709 | |
| 710 | // Use the global receiver object from the called function as the |
| 711 | // receiver. |
| 712 | __ bind(&use_global_receiver); |
| 713 | const int kGlobalIndex = |
| 714 | Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; |
| 715 | __ movq(rbx, FieldOperand(rsi, kGlobalIndex)); |
| 716 | __ movq(rbx, FieldOperand(rbx, GlobalObject::kGlobalContextOffset)); |
| 717 | __ movq(rbx, FieldOperand(rbx, kGlobalIndex)); |
| 718 | __ movq(rbx, FieldOperand(rbx, GlobalObject::kGlobalReceiverOffset)); |
| 719 | |
| 720 | __ bind(&patch_receiver); |
| 721 | __ movq(Operand(rsp, rax, times_pointer_size, 0), rbx); |
| 722 | |
| 723 | __ jmp(&shift_arguments); |
| 724 | } |
| 725 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 726 | // 3b. Check for function proxy. |
| 727 | __ bind(&slow); |
| 728 | __ Set(rdx, 1); // indicate function proxy |
| 729 | __ CmpInstanceType(rcx, JS_FUNCTION_PROXY_TYPE); |
| 730 | __ j(equal, &shift_arguments); |
| 731 | __ bind(&non_function); |
| 732 | __ Set(rdx, 2); // indicate non-function |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 733 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 734 | // 3c. Patch the first argument when calling a non-function. The |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 735 | // CALL_NON_FUNCTION builtin expects the non-function callee as |
| 736 | // receiver, so overwrite the first argument which will ultimately |
| 737 | // become the receiver. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 738 | __ movq(Operand(rsp, rax, times_pointer_size, 0), rdi); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 739 | |
| 740 | // 4. Shift arguments and return address one slot down on the stack |
| 741 | // (overwriting the original receiver). Adjust argument count to make |
| 742 | // the original first argument the new receiver. |
| 743 | __ bind(&shift_arguments); |
| 744 | { Label loop; |
| 745 | __ movq(rcx, rax); |
| 746 | __ bind(&loop); |
| 747 | __ movq(rbx, Operand(rsp, rcx, times_pointer_size, 0)); |
| 748 | __ movq(Operand(rsp, rcx, times_pointer_size, 1 * kPointerSize), rbx); |
| 749 | __ decq(rcx); |
| 750 | __ j(not_sign, &loop); // While non-negative (to copy return address). |
| 751 | __ pop(rbx); // Discard copy of return address. |
| 752 | __ decq(rax); // One fewer argument (first argument is new receiver). |
| 753 | } |
| 754 | |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 755 | // 5a. Call non-function via tail call to CALL_NON_FUNCTION builtin, |
| 756 | // or a function proxy via CALL_FUNCTION_PROXY. |
| 757 | { Label function, non_proxy; |
| 758 | __ testq(rdx, rdx); |
| 759 | __ j(zero, &function); |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 760 | __ Set(rbx, 0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 761 | __ SetCallKind(rcx, CALL_AS_METHOD); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 762 | __ cmpq(rdx, Immediate(1)); |
| 763 | __ j(not_equal, &non_proxy); |
| 764 | |
| 765 | __ pop(rdx); // return address |
| 766 | __ push(rdi); // re-add proxy object as additional argument |
| 767 | __ push(rdx); |
| 768 | __ incq(rax); |
| 769 | __ GetBuiltinEntry(rdx, Builtins::CALL_FUNCTION_PROXY); |
| 770 | __ jmp(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
| 771 | RelocInfo::CODE_TARGET); |
| 772 | |
| 773 | __ bind(&non_proxy); |
| 774 | __ GetBuiltinEntry(rdx, Builtins::CALL_NON_FUNCTION); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 775 | __ Jump(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 776 | RelocInfo::CODE_TARGET); |
| 777 | __ bind(&function); |
| 778 | } |
| 779 | |
| 780 | // 5b. Get the code to call from the function and check that the number of |
| 781 | // expected arguments matches what we're providing. If so, jump |
| 782 | // (tail-call) to the code in register edx without checking arguments. |
| 783 | __ movq(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); |
| 784 | __ movsxlq(rbx, |
| 785 | FieldOperand(rdx, |
| 786 | SharedFunctionInfo::kFormalParameterCountOffset)); |
| 787 | __ movq(rdx, FieldOperand(rdi, JSFunction::kCodeEntryOffset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 788 | __ SetCallKind(rcx, CALL_AS_METHOD); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 789 | __ cmpq(rax, rbx); |
| 790 | __ j(not_equal, |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 791 | masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 792 | RelocInfo::CODE_TARGET); |
| 793 | |
| 794 | ParameterCount expected(0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 795 | __ InvokeCode(rdx, expected, expected, JUMP_FUNCTION, |
| 796 | NullCallWrapper(), CALL_AS_METHOD); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 797 | } |
| 798 | |
| 799 | |
| 800 | void Builtins::Generate_FunctionApply(MacroAssembler* masm) { |
| 801 | // Stack at entry: |
| 802 | // rsp: return address |
| 803 | // rsp+8: arguments |
| 804 | // rsp+16: receiver ("this") |
| 805 | // rsp+24: function |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 806 | { |
| 807 | FrameScope frame_scope(masm, StackFrame::INTERNAL); |
| 808 | // Stack frame: |
| 809 | // rbp: Old base pointer |
| 810 | // rbp[1]: return address |
| 811 | // rbp[2]: function arguments |
| 812 | // rbp[3]: receiver |
| 813 | // rbp[4]: function |
| 814 | static const int kArgumentsOffset = 2 * kPointerSize; |
| 815 | static const int kReceiverOffset = 3 * kPointerSize; |
| 816 | static const int kFunctionOffset = 4 * kPointerSize; |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 817 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 818 | __ push(Operand(rbp, kFunctionOffset)); |
| 819 | __ push(Operand(rbp, kArgumentsOffset)); |
| 820 | __ InvokeBuiltin(Builtins::APPLY_PREPARE, CALL_FUNCTION); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 821 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 822 | // Check the stack for overflow. We are not trying to catch |
| 823 | // interruptions (e.g. debug break and preemption) here, so the "real stack |
| 824 | // limit" is checked. |
| 825 | Label okay; |
| 826 | __ LoadRoot(kScratchRegister, Heap::kRealStackLimitRootIndex); |
| 827 | __ movq(rcx, rsp); |
| 828 | // Make rcx the space we have left. The stack might already be overflowed |
| 829 | // here which will cause rcx to become negative. |
| 830 | __ subq(rcx, kScratchRegister); |
| 831 | // Make rdx the space we need for the array when it is unrolled onto the |
| 832 | // stack. |
| 833 | __ PositiveSmiTimesPowerOfTwoToInteger64(rdx, rax, kPointerSizeLog2); |
| 834 | // Check if the arguments will overflow the stack. |
| 835 | __ cmpq(rcx, rdx); |
| 836 | __ j(greater, &okay); // Signed comparison. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 837 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 838 | // Out of stack space. |
| 839 | __ push(Operand(rbp, kFunctionOffset)); |
| 840 | __ push(rax); |
| 841 | __ InvokeBuiltin(Builtins::APPLY_OVERFLOW, CALL_FUNCTION); |
| 842 | __ bind(&okay); |
| 843 | // End of stack check. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 844 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 845 | // Push current index and limit. |
| 846 | const int kLimitOffset = |
| 847 | StandardFrameConstants::kExpressionsOffset - 1 * kPointerSize; |
| 848 | const int kIndexOffset = kLimitOffset - 1 * kPointerSize; |
| 849 | __ push(rax); // limit |
| 850 | __ push(Immediate(0)); // index |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 851 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 852 | // Get the receiver. |
| 853 | __ movq(rbx, Operand(rbp, kReceiverOffset)); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 854 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 855 | // Check that the function is a JS function (otherwise it must be a proxy). |
| 856 | Label push_receiver; |
| 857 | __ movq(rdi, Operand(rbp, kFunctionOffset)); |
| 858 | __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx); |
| 859 | __ j(not_equal, &push_receiver); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 860 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 861 | // Change context eagerly to get the right global object if necessary. |
| 862 | __ movq(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 863 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 864 | // Do not transform the receiver for strict mode functions. |
| 865 | Label call_to_object, use_global_receiver; |
| 866 | __ movq(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); |
| 867 | __ testb(FieldOperand(rdx, SharedFunctionInfo::kStrictModeByteOffset), |
| 868 | Immediate(1 << SharedFunctionInfo::kStrictModeBitWithinByte)); |
| 869 | __ j(not_equal, &push_receiver); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 870 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 871 | // Do not transform the receiver for natives. |
| 872 | __ testb(FieldOperand(rdx, SharedFunctionInfo::kNativeByteOffset), |
| 873 | Immediate(1 << SharedFunctionInfo::kNativeBitWithinByte)); |
| 874 | __ j(not_equal, &push_receiver); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 875 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 876 | // Compute the receiver in non-strict mode. |
| 877 | __ JumpIfSmi(rbx, &call_to_object, Label::kNear); |
| 878 | __ CompareRoot(rbx, Heap::kNullValueRootIndex); |
| 879 | __ j(equal, &use_global_receiver); |
| 880 | __ CompareRoot(rbx, Heap::kUndefinedValueRootIndex); |
| 881 | __ j(equal, &use_global_receiver); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 882 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 883 | // If given receiver is already a JavaScript object then there's no |
| 884 | // reason for converting it. |
| 885 | STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
| 886 | __ CmpObjectType(rbx, FIRST_SPEC_OBJECT_TYPE, rcx); |
| 887 | __ j(above_equal, &push_receiver); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 888 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 889 | // Convert the receiver to an object. |
| 890 | __ bind(&call_to_object); |
| 891 | __ push(rbx); |
| 892 | __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); |
| 893 | __ movq(rbx, rax); |
| 894 | __ jmp(&push_receiver, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 895 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 896 | // Use the current global receiver object as the receiver. |
| 897 | __ bind(&use_global_receiver); |
| 898 | const int kGlobalOffset = |
| 899 | Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; |
| 900 | __ movq(rbx, FieldOperand(rsi, kGlobalOffset)); |
| 901 | __ movq(rbx, FieldOperand(rbx, GlobalObject::kGlobalContextOffset)); |
| 902 | __ movq(rbx, FieldOperand(rbx, kGlobalOffset)); |
| 903 | __ movq(rbx, FieldOperand(rbx, GlobalObject::kGlobalReceiverOffset)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 904 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 905 | // Push the receiver. |
| 906 | __ bind(&push_receiver); |
| 907 | __ push(rbx); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 908 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 909 | // Copy all arguments from the array to the stack. |
| 910 | Label entry, loop; |
| 911 | __ movq(rax, Operand(rbp, kIndexOffset)); |
| 912 | __ jmp(&entry); |
| 913 | __ bind(&loop); |
| 914 | __ movq(rdx, Operand(rbp, kArgumentsOffset)); // load arguments |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 915 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 916 | // Use inline caching to speed up access to arguments. |
| 917 | Handle<Code> ic = |
| 918 | masm->isolate()->builtins()->KeyedLoadIC_Initialize(); |
| 919 | __ Call(ic, RelocInfo::CODE_TARGET); |
| 920 | // It is important that we do not have a test instruction after the |
| 921 | // call. A test instruction after the call is used to indicate that |
| 922 | // we have generated an inline version of the keyed load. In this |
| 923 | // case, we know that we are not generating a test instruction next. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 924 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 925 | // Push the nth argument. |
| 926 | __ push(rax); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 927 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 928 | // Update the index on the stack and in register rax. |
| 929 | __ movq(rax, Operand(rbp, kIndexOffset)); |
| 930 | __ SmiAddConstant(rax, rax, Smi::FromInt(1)); |
| 931 | __ movq(Operand(rbp, kIndexOffset), rax); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 932 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 933 | __ bind(&entry); |
| 934 | __ cmpq(rax, Operand(rbp, kLimitOffset)); |
| 935 | __ j(not_equal, &loop); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 936 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 937 | // Invoke the function. |
| 938 | Label call_proxy; |
| 939 | ParameterCount actual(rax); |
| 940 | __ SmiToInteger32(rax, rax); |
| 941 | __ movq(rdi, Operand(rbp, kFunctionOffset)); |
| 942 | __ CmpObjectType(rdi, JS_FUNCTION_TYPE, rcx); |
| 943 | __ j(not_equal, &call_proxy); |
| 944 | __ InvokeFunction(rdi, actual, CALL_FUNCTION, |
| 945 | NullCallWrapper(), CALL_AS_METHOD); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 946 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 947 | frame_scope.GenerateLeaveFrame(); |
| 948 | __ ret(3 * kPointerSize); // remove this, receiver, and arguments |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 949 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 950 | // Invoke the function proxy. |
| 951 | __ bind(&call_proxy); |
| 952 | __ push(rdi); // add function proxy as last argument |
| 953 | __ incq(rax); |
| 954 | __ Set(rbx, 0); |
| 955 | __ SetCallKind(rcx, CALL_AS_METHOD); |
| 956 | __ GetBuiltinEntry(rdx, Builtins::CALL_FUNCTION_PROXY); |
| 957 | __ call(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
| 958 | RelocInfo::CODE_TARGET); |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 959 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 960 | // Leave internal frame. |
| 961 | } |
Ben Murdoch | 589d697 | 2011-11-30 16:04:58 +0000 | [diff] [blame] | 962 | __ ret(3 * kPointerSize); // remove this, receiver, and arguments |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 963 | } |
| 964 | |
| 965 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 966 | // Allocate an empty JSArray. The allocated array is put into the result |
| 967 | // register. If the parameter initial_capacity is larger than zero an elements |
| 968 | // backing store is allocated with this size and filled with the hole values. |
| 969 | // Otherwise the elements backing store is set to the empty FixedArray. |
| 970 | static void AllocateEmptyJSArray(MacroAssembler* masm, |
| 971 | Register array_function, |
| 972 | Register result, |
| 973 | Register scratch1, |
| 974 | Register scratch2, |
| 975 | Register scratch3, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 976 | Label* gc_required) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 977 | const int initial_capacity = JSArray::kPreallocatedArrayElements; |
| 978 | STATIC_ASSERT(initial_capacity >= 0); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 979 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 980 | __ LoadInitialArrayMap(array_function, scratch2, scratch1); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 981 | |
| 982 | // Allocate the JSArray object together with space for a fixed array with the |
| 983 | // requested elements. |
| 984 | int size = JSArray::kSize; |
| 985 | if (initial_capacity > 0) { |
| 986 | size += FixedArray::SizeFor(initial_capacity); |
| 987 | } |
| 988 | __ AllocateInNewSpace(size, |
| 989 | result, |
| 990 | scratch2, |
| 991 | scratch3, |
| 992 | gc_required, |
| 993 | TAG_OBJECT); |
| 994 | |
| 995 | // Allocated the JSArray. Now initialize the fields except for the elements |
| 996 | // array. |
| 997 | // result: JSObject |
| 998 | // scratch1: initial map |
| 999 | // scratch2: start of next object |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1000 | Factory* factory = masm->isolate()->factory(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1001 | __ movq(FieldOperand(result, JSObject::kMapOffset), scratch1); |
| 1002 | __ Move(FieldOperand(result, JSArray::kPropertiesOffset), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1003 | factory->empty_fixed_array()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1004 | // Field JSArray::kElementsOffset is initialized later. |
| 1005 | __ Move(FieldOperand(result, JSArray::kLengthOffset), Smi::FromInt(0)); |
| 1006 | |
| 1007 | // If no storage is requested for the elements array just set the empty |
| 1008 | // fixed array. |
| 1009 | if (initial_capacity == 0) { |
| 1010 | __ Move(FieldOperand(result, JSArray::kElementsOffset), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1011 | factory->empty_fixed_array()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1012 | return; |
| 1013 | } |
| 1014 | |
| 1015 | // Calculate the location of the elements array and set elements array member |
| 1016 | // of the JSArray. |
| 1017 | // result: JSObject |
| 1018 | // scratch2: start of next object |
| 1019 | __ lea(scratch1, Operand(result, JSArray::kSize)); |
| 1020 | __ movq(FieldOperand(result, JSArray::kElementsOffset), scratch1); |
| 1021 | |
| 1022 | // Initialize the FixedArray and fill it with holes. FixedArray length is |
| 1023 | // stored as a smi. |
| 1024 | // result: JSObject |
| 1025 | // scratch1: elements array |
| 1026 | // scratch2: start of next object |
| 1027 | __ Move(FieldOperand(scratch1, HeapObject::kMapOffset), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1028 | factory->fixed_array_map()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1029 | __ Move(FieldOperand(scratch1, FixedArray::kLengthOffset), |
| 1030 | Smi::FromInt(initial_capacity)); |
| 1031 | |
| 1032 | // Fill the FixedArray with the hole value. Inline the code if short. |
| 1033 | // Reconsider loop unfolding if kPreallocatedArrayElements gets changed. |
| 1034 | static const int kLoopUnfoldLimit = 4; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1035 | __ LoadRoot(scratch3, Heap::kTheHoleValueRootIndex); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1036 | if (initial_capacity <= kLoopUnfoldLimit) { |
| 1037 | // Use a scratch register here to have only one reloc info when unfolding |
| 1038 | // the loop. |
| 1039 | for (int i = 0; i < initial_capacity; i++) { |
| 1040 | __ movq(FieldOperand(scratch1, |
| 1041 | FixedArray::kHeaderSize + i * kPointerSize), |
| 1042 | scratch3); |
| 1043 | } |
| 1044 | } else { |
| 1045 | Label loop, entry; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1046 | __ movq(scratch2, Immediate(initial_capacity)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1047 | __ jmp(&entry); |
| 1048 | __ bind(&loop); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1049 | __ movq(FieldOperand(scratch1, |
| 1050 | scratch2, |
| 1051 | times_pointer_size, |
| 1052 | FixedArray::kHeaderSize), |
| 1053 | scratch3); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1054 | __ bind(&entry); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1055 | __ decq(scratch2); |
| 1056 | __ j(not_sign, &loop); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1057 | } |
| 1058 | } |
| 1059 | |
| 1060 | |
| 1061 | // Allocate a JSArray with the number of elements stored in a register. The |
| 1062 | // register array_function holds the built-in Array function and the register |
| 1063 | // array_size holds the size of the array as a smi. The allocated array is put |
| 1064 | // into the result register and beginning and end of the FixedArray elements |
| 1065 | // storage is put into registers elements_array and elements_array_end (see |
| 1066 | // below for when that is not the case). If the parameter fill_with_holes is |
| 1067 | // true the allocated elements backing store is filled with the hole values |
| 1068 | // otherwise it is left uninitialized. When the backing store is filled the |
| 1069 | // register elements_array is scratched. |
| 1070 | static void AllocateJSArray(MacroAssembler* masm, |
| 1071 | Register array_function, // Array function. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1072 | Register array_size, // As a smi, cannot be 0. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1073 | Register result, |
| 1074 | Register elements_array, |
| 1075 | Register elements_array_end, |
| 1076 | Register scratch, |
| 1077 | bool fill_with_hole, |
| 1078 | Label* gc_required) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1079 | __ LoadInitialArrayMap(array_function, scratch, elements_array); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1080 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1081 | if (FLAG_debug_code) { // Assert that array size is not zero. |
| 1082 | __ testq(array_size, array_size); |
| 1083 | __ Assert(not_zero, "array size is unexpectedly 0"); |
| 1084 | } |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1085 | |
| 1086 | // Allocate the JSArray object together with space for a FixedArray with the |
| 1087 | // requested elements. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1088 | SmiIndex index = |
| 1089 | masm->SmiToIndex(kScratchRegister, array_size, kPointerSizeLog2); |
| 1090 | __ AllocateInNewSpace(JSArray::kSize + FixedArray::kHeaderSize, |
| 1091 | index.scale, |
| 1092 | index.reg, |
| 1093 | result, |
| 1094 | elements_array_end, |
| 1095 | scratch, |
| 1096 | gc_required, |
| 1097 | TAG_OBJECT); |
| 1098 | |
| 1099 | // Allocated the JSArray. Now initialize the fields except for the elements |
| 1100 | // array. |
| 1101 | // result: JSObject |
| 1102 | // elements_array: initial map |
| 1103 | // elements_array_end: start of next object |
| 1104 | // array_size: size of array (smi) |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1105 | Factory* factory = masm->isolate()->factory(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1106 | __ movq(FieldOperand(result, JSObject::kMapOffset), elements_array); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1107 | __ Move(elements_array, factory->empty_fixed_array()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1108 | __ movq(FieldOperand(result, JSArray::kPropertiesOffset), elements_array); |
| 1109 | // Field JSArray::kElementsOffset is initialized later. |
| 1110 | __ movq(FieldOperand(result, JSArray::kLengthOffset), array_size); |
| 1111 | |
| 1112 | // Calculate the location of the elements array and set elements array member |
| 1113 | // of the JSArray. |
| 1114 | // result: JSObject |
| 1115 | // elements_array_end: start of next object |
| 1116 | // array_size: size of array (smi) |
| 1117 | __ lea(elements_array, Operand(result, JSArray::kSize)); |
| 1118 | __ movq(FieldOperand(result, JSArray::kElementsOffset), elements_array); |
| 1119 | |
| 1120 | // Initialize the fixed array. FixedArray length is stored as a smi. |
| 1121 | // result: JSObject |
| 1122 | // elements_array: elements array |
| 1123 | // elements_array_end: start of next object |
| 1124 | // array_size: size of array (smi) |
| 1125 | __ Move(FieldOperand(elements_array, JSObject::kMapOffset), |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1126 | factory->fixed_array_map()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1127 | // For non-empty JSArrays the length of the FixedArray and the JSArray is the |
| 1128 | // same. |
| 1129 | __ movq(FieldOperand(elements_array, FixedArray::kLengthOffset), array_size); |
| 1130 | |
| 1131 | // Fill the allocated FixedArray with the hole value if requested. |
| 1132 | // result: JSObject |
| 1133 | // elements_array: elements array |
| 1134 | // elements_array_end: start of next object |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1135 | if (fill_with_hole) { |
| 1136 | Label loop, entry; |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1137 | __ LoadRoot(scratch, Heap::kTheHoleValueRootIndex); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1138 | __ lea(elements_array, Operand(elements_array, |
| 1139 | FixedArray::kHeaderSize - kHeapObjectTag)); |
| 1140 | __ jmp(&entry); |
| 1141 | __ bind(&loop); |
| 1142 | __ movq(Operand(elements_array, 0), scratch); |
| 1143 | __ addq(elements_array, Immediate(kPointerSize)); |
| 1144 | __ bind(&entry); |
| 1145 | __ cmpq(elements_array, elements_array_end); |
| 1146 | __ j(below, &loop); |
| 1147 | } |
| 1148 | } |
| 1149 | |
| 1150 | |
| 1151 | // Create a new array for the built-in Array function. This function allocates |
| 1152 | // the JSArray object and the FixedArray elements array and initializes these. |
| 1153 | // If the Array cannot be constructed in native code the runtime is called. This |
| 1154 | // function assumes the following state: |
| 1155 | // rdi: constructor (built-in Array function) |
| 1156 | // rax: argc |
| 1157 | // rsp[0]: return address |
| 1158 | // rsp[8]: last argument |
| 1159 | // This function is used for both construct and normal calls of Array. The only |
| 1160 | // difference between handling a construct call and a normal call is that for a |
| 1161 | // construct call the constructor function in rdi needs to be preserved for |
| 1162 | // entering the generic code. In both cases argc in rax needs to be preserved. |
| 1163 | // Both registers are preserved by this code so no need to differentiate between |
| 1164 | // a construct call and a normal call. |
| 1165 | static void ArrayNativeCode(MacroAssembler* masm, |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1166 | Label* call_generic_code) { |
| 1167 | Label argc_one_or_more, argc_two_or_more, empty_array, not_empty_array, |
| 1168 | has_non_smi_element, finish, cant_transition_map, not_double; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1169 | |
| 1170 | // Check for array construction with zero arguments. |
| 1171 | __ testq(rax, rax); |
| 1172 | __ j(not_zero, &argc_one_or_more); |
| 1173 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1174 | __ bind(&empty_array); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1175 | // Handle construction of an empty array. |
| 1176 | AllocateEmptyJSArray(masm, |
| 1177 | rdi, |
| 1178 | rbx, |
| 1179 | rcx, |
| 1180 | rdx, |
| 1181 | r8, |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1182 | call_generic_code); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1183 | Counters* counters = masm->isolate()->counters(); |
| 1184 | __ IncrementCounter(counters->array_function_native(), 1); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1185 | __ movq(rax, rbx); |
| 1186 | __ ret(kPointerSize); |
| 1187 | |
| 1188 | // Check for one argument. Bail out if argument is not smi or if it is |
| 1189 | // negative. |
| 1190 | __ bind(&argc_one_or_more); |
| 1191 | __ cmpq(rax, Immediate(1)); |
| 1192 | __ j(not_equal, &argc_two_or_more); |
| 1193 | __ movq(rdx, Operand(rsp, kPointerSize)); // Get the argument from the stack. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1194 | |
| 1195 | __ SmiTest(rdx); |
| 1196 | __ j(not_zero, ¬_empty_array); |
| 1197 | __ pop(r8); // Adjust stack. |
| 1198 | __ Drop(1); |
| 1199 | __ push(r8); |
| 1200 | __ movq(rax, Immediate(0)); // Treat this as a call with argc of zero. |
| 1201 | __ jmp(&empty_array); |
| 1202 | |
| 1203 | __ bind(¬_empty_array); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1204 | __ JumpUnlessNonNegativeSmi(rdx, call_generic_code); |
| 1205 | |
| 1206 | // Handle construction of an empty array of a certain size. Bail out if size |
| 1207 | // is to large to actually allocate an elements array. |
| 1208 | __ SmiCompare(rdx, Smi::FromInt(JSObject::kInitialMaxFastElementArray)); |
| 1209 | __ j(greater_equal, call_generic_code); |
| 1210 | |
| 1211 | // rax: argc |
| 1212 | // rdx: array_size (smi) |
| 1213 | // rdi: constructor |
| 1214 | // esp[0]: return address |
| 1215 | // esp[8]: argument |
| 1216 | AllocateJSArray(masm, |
| 1217 | rdi, |
| 1218 | rdx, |
| 1219 | rbx, |
| 1220 | rcx, |
| 1221 | r8, |
| 1222 | r9, |
| 1223 | true, |
| 1224 | call_generic_code); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1225 | __ IncrementCounter(counters->array_function_native(), 1); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1226 | __ movq(rax, rbx); |
| 1227 | __ ret(2 * kPointerSize); |
| 1228 | |
| 1229 | // Handle construction of an array from a list of arguments. |
| 1230 | __ bind(&argc_two_or_more); |
| 1231 | __ movq(rdx, rax); |
| 1232 | __ Integer32ToSmi(rdx, rdx); // Convet argc to a smi. |
| 1233 | // rax: argc |
| 1234 | // rdx: array_size (smi) |
| 1235 | // rdi: constructor |
| 1236 | // esp[0] : return address |
| 1237 | // esp[8] : last argument |
| 1238 | AllocateJSArray(masm, |
| 1239 | rdi, |
| 1240 | rdx, |
| 1241 | rbx, |
| 1242 | rcx, |
| 1243 | r8, |
| 1244 | r9, |
| 1245 | false, |
| 1246 | call_generic_code); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1247 | __ IncrementCounter(counters->array_function_native(), 1); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1248 | |
| 1249 | // rax: argc |
| 1250 | // rbx: JSArray |
| 1251 | // rcx: elements_array |
| 1252 | // r8: elements_array_end (untagged) |
| 1253 | // esp[0]: return address |
| 1254 | // esp[8]: last argument |
| 1255 | |
| 1256 | // Location of the last argument |
| 1257 | __ lea(r9, Operand(rsp, kPointerSize)); |
| 1258 | |
| 1259 | // Location of the first array element (Parameter fill_with_holes to |
| 1260 | // AllocateJSArrayis false, so the FixedArray is returned in rcx). |
| 1261 | __ lea(rdx, Operand(rcx, FixedArray::kHeaderSize - kHeapObjectTag)); |
| 1262 | |
| 1263 | // rax: argc |
| 1264 | // rbx: JSArray |
| 1265 | // rdx: location of the first array element |
| 1266 | // r9: location of the last argument |
| 1267 | // esp[0]: return address |
| 1268 | // esp[8]: last argument |
| 1269 | Label loop, entry; |
| 1270 | __ movq(rcx, rax); |
| 1271 | __ jmp(&entry); |
| 1272 | __ bind(&loop); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1273 | __ movq(r8, Operand(r9, rcx, times_pointer_size, 0)); |
| 1274 | if (FLAG_smi_only_arrays) { |
| 1275 | __ JumpIfNotSmi(r8, &has_non_smi_element); |
| 1276 | } |
| 1277 | __ movq(Operand(rdx, 0), r8); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1278 | __ addq(rdx, Immediate(kPointerSize)); |
| 1279 | __ bind(&entry); |
| 1280 | __ decq(rcx); |
| 1281 | __ j(greater_equal, &loop); |
| 1282 | |
| 1283 | // Remove caller arguments from the stack and return. |
| 1284 | // rax: argc |
| 1285 | // rbx: JSArray |
| 1286 | // esp[0]: return address |
| 1287 | // esp[8]: last argument |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1288 | __ bind(&finish); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1289 | __ pop(rcx); |
| 1290 | __ lea(rsp, Operand(rsp, rax, times_pointer_size, 1 * kPointerSize)); |
| 1291 | __ push(rcx); |
| 1292 | __ movq(rax, rbx); |
| 1293 | __ ret(0); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1294 | |
| 1295 | __ bind(&has_non_smi_element); |
| 1296 | // Double values are handled by the runtime. |
| 1297 | __ CheckMap(r8, |
| 1298 | masm->isolate()->factory()->heap_number_map(), |
| 1299 | ¬_double, |
| 1300 | DONT_DO_SMI_CHECK); |
| 1301 | __ bind(&cant_transition_map); |
| 1302 | __ UndoAllocationInNewSpace(rbx); |
| 1303 | __ jmp(call_generic_code); |
| 1304 | |
| 1305 | __ bind(¬_double); |
| 1306 | // Transition FAST_SMI_ONLY_ELEMENTS to FAST_ELEMENTS. |
| 1307 | // rbx: JSArray |
| 1308 | __ movq(r11, FieldOperand(rbx, HeapObject::kMapOffset)); |
| 1309 | __ LoadTransitionedArrayMapConditional(FAST_SMI_ONLY_ELEMENTS, |
| 1310 | FAST_ELEMENTS, |
| 1311 | r11, |
| 1312 | kScratchRegister, |
| 1313 | &cant_transition_map); |
| 1314 | |
| 1315 | __ movq(FieldOperand(rbx, HeapObject::kMapOffset), r11); |
| 1316 | __ RecordWriteField(rbx, HeapObject::kMapOffset, r11, r8, |
| 1317 | kDontSaveFPRegs, OMIT_REMEMBERED_SET, OMIT_SMI_CHECK); |
| 1318 | |
| 1319 | // Finish the array initialization loop. |
| 1320 | Label loop2; |
| 1321 | __ bind(&loop2); |
| 1322 | __ movq(r8, Operand(r9, rcx, times_pointer_size, 0)); |
| 1323 | __ movq(Operand(rdx, 0), r8); |
| 1324 | __ addq(rdx, Immediate(kPointerSize)); |
| 1325 | __ decq(rcx); |
| 1326 | __ j(greater_equal, &loop2); |
| 1327 | __ jmp(&finish); |
| 1328 | } |
| 1329 | |
| 1330 | |
| 1331 | void Builtins::Generate_InternalArrayCode(MacroAssembler* masm) { |
| 1332 | // ----------- S t a t e ------------- |
| 1333 | // -- rax : argc |
| 1334 | // -- rsp[0] : return address |
| 1335 | // -- rsp[8] : last argument |
| 1336 | // ----------------------------------- |
| 1337 | Label generic_array_code; |
| 1338 | |
| 1339 | // Get the InternalArray function. |
| 1340 | __ LoadGlobalFunction(Context::INTERNAL_ARRAY_FUNCTION_INDEX, rdi); |
| 1341 | |
| 1342 | if (FLAG_debug_code) { |
| 1343 | // Initial map for the builtin InternalArray functions should be maps. |
| 1344 | __ movq(rbx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 1345 | // Will both indicate a NULL and a Smi. |
| 1346 | STATIC_ASSERT(kSmiTag == 0); |
| 1347 | Condition not_smi = NegateCondition(masm->CheckSmi(rbx)); |
| 1348 | __ Check(not_smi, "Unexpected initial map for InternalArray function"); |
| 1349 | __ CmpObjectType(rbx, MAP_TYPE, rcx); |
| 1350 | __ Check(equal, "Unexpected initial map for InternalArray function"); |
| 1351 | } |
| 1352 | |
| 1353 | // Run the native code for the InternalArray function called as a normal |
| 1354 | // function. |
| 1355 | ArrayNativeCode(masm, &generic_array_code); |
| 1356 | |
| 1357 | // Jump to the generic array code in case the specialized code cannot handle |
| 1358 | // the construction. |
| 1359 | __ bind(&generic_array_code); |
| 1360 | Handle<Code> array_code = |
| 1361 | masm->isolate()->builtins()->InternalArrayCodeGeneric(); |
| 1362 | __ Jump(array_code, RelocInfo::CODE_TARGET); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1363 | } |
| 1364 | |
| 1365 | |
| 1366 | void Builtins::Generate_ArrayCode(MacroAssembler* masm) { |
| 1367 | // ----------- S t a t e ------------- |
| 1368 | // -- rax : argc |
| 1369 | // -- rsp[0] : return address |
| 1370 | // -- rsp[8] : last argument |
| 1371 | // ----------------------------------- |
| 1372 | Label generic_array_code; |
| 1373 | |
| 1374 | // Get the Array function. |
| 1375 | __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, rdi); |
| 1376 | |
| 1377 | if (FLAG_debug_code) { |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1378 | // Initial map for the builtin Array functions should be maps. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1379 | __ movq(rbx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 1380 | // Will both indicate a NULL and a Smi. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1381 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1382 | Condition not_smi = NegateCondition(masm->CheckSmi(rbx)); |
| 1383 | __ Check(not_smi, "Unexpected initial map for Array function"); |
| 1384 | __ CmpObjectType(rbx, MAP_TYPE, rcx); |
| 1385 | __ Check(equal, "Unexpected initial map for Array function"); |
| 1386 | } |
| 1387 | |
| 1388 | // Run the native code for the Array function called as a normal function. |
| 1389 | ArrayNativeCode(masm, &generic_array_code); |
| 1390 | |
| 1391 | // Jump to the generic array code in case the specialized code cannot handle |
| 1392 | // the construction. |
| 1393 | __ bind(&generic_array_code); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1394 | Handle<Code> array_code = |
| 1395 | masm->isolate()->builtins()->ArrayCodeGeneric(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1396 | __ Jump(array_code, RelocInfo::CODE_TARGET); |
| 1397 | } |
| 1398 | |
| 1399 | |
| 1400 | void Builtins::Generate_ArrayConstructCode(MacroAssembler* masm) { |
| 1401 | // ----------- S t a t e ------------- |
| 1402 | // -- rax : argc |
| 1403 | // -- rdi : constructor |
| 1404 | // -- rsp[0] : return address |
| 1405 | // -- rsp[8] : last argument |
| 1406 | // ----------------------------------- |
| 1407 | Label generic_constructor; |
| 1408 | |
| 1409 | if (FLAG_debug_code) { |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1410 | // The array construct code is only set for the builtin and internal |
| 1411 | // Array functions which always have a map. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1412 | // Initial map for the builtin Array function should be a map. |
| 1413 | __ movq(rbx, FieldOperand(rdi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 1414 | // Will both indicate a NULL and a Smi. |
Ben Murdoch | 69a99ed | 2011-11-30 16:03:39 +0000 | [diff] [blame] | 1415 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1416 | Condition not_smi = NegateCondition(masm->CheckSmi(rbx)); |
| 1417 | __ Check(not_smi, "Unexpected initial map for Array function"); |
| 1418 | __ CmpObjectType(rbx, MAP_TYPE, rcx); |
| 1419 | __ Check(equal, "Unexpected initial map for Array function"); |
| 1420 | } |
| 1421 | |
| 1422 | // Run the native code for the Array function called as constructor. |
| 1423 | ArrayNativeCode(masm, &generic_constructor); |
| 1424 | |
| 1425 | // Jump to the generic construct code in case the specialized code cannot |
| 1426 | // handle the construction. |
| 1427 | __ bind(&generic_constructor); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1428 | Handle<Code> generic_construct_stub = |
| 1429 | masm->isolate()->builtins()->JSConstructStubGeneric(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1430 | __ Jump(generic_construct_stub, RelocInfo::CODE_TARGET); |
| 1431 | } |
| 1432 | |
| 1433 | |
| 1434 | void Builtins::Generate_StringConstructCode(MacroAssembler* masm) { |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1435 | // ----------- S t a t e ------------- |
| 1436 | // -- rax : number of arguments |
| 1437 | // -- rdi : constructor function |
| 1438 | // -- rsp[0] : return address |
| 1439 | // -- rsp[(argc - n) * 8] : arg[n] (zero-based) |
| 1440 | // -- rsp[(argc + 1) * 8] : receiver |
| 1441 | // ----------------------------------- |
| 1442 | Counters* counters = masm->isolate()->counters(); |
| 1443 | __ IncrementCounter(counters->string_ctor_calls(), 1); |
| 1444 | |
| 1445 | if (FLAG_debug_code) { |
| 1446 | __ LoadGlobalFunction(Context::STRING_FUNCTION_INDEX, rcx); |
| 1447 | __ cmpq(rdi, rcx); |
| 1448 | __ Assert(equal, "Unexpected String function"); |
| 1449 | } |
| 1450 | |
| 1451 | // Load the first argument into rax and get rid of the rest |
| 1452 | // (including the receiver). |
| 1453 | Label no_arguments; |
| 1454 | __ testq(rax, rax); |
| 1455 | __ j(zero, &no_arguments); |
| 1456 | __ movq(rbx, Operand(rsp, rax, times_pointer_size, 0)); |
| 1457 | __ pop(rcx); |
| 1458 | __ lea(rsp, Operand(rsp, rax, times_pointer_size, kPointerSize)); |
| 1459 | __ push(rcx); |
| 1460 | __ movq(rax, rbx); |
| 1461 | |
| 1462 | // Lookup the argument in the number to string cache. |
| 1463 | Label not_cached, argument_is_string; |
| 1464 | NumberToStringStub::GenerateLookupNumberStringCache( |
| 1465 | masm, |
| 1466 | rax, // Input. |
| 1467 | rbx, // Result. |
| 1468 | rcx, // Scratch 1. |
| 1469 | rdx, // Scratch 2. |
| 1470 | false, // Input is known to be smi? |
| 1471 | ¬_cached); |
| 1472 | __ IncrementCounter(counters->string_ctor_cached_number(), 1); |
| 1473 | __ bind(&argument_is_string); |
| 1474 | |
| 1475 | // ----------- S t a t e ------------- |
| 1476 | // -- rbx : argument converted to string |
| 1477 | // -- rdi : constructor function |
| 1478 | // -- rsp[0] : return address |
| 1479 | // ----------------------------------- |
| 1480 | |
| 1481 | // Allocate a JSValue and put the tagged pointer into rax. |
| 1482 | Label gc_required; |
| 1483 | __ AllocateInNewSpace(JSValue::kSize, |
| 1484 | rax, // Result. |
| 1485 | rcx, // New allocation top (we ignore it). |
| 1486 | no_reg, |
| 1487 | &gc_required, |
| 1488 | TAG_OBJECT); |
| 1489 | |
| 1490 | // Set the map. |
| 1491 | __ LoadGlobalFunctionInitialMap(rdi, rcx); |
| 1492 | if (FLAG_debug_code) { |
| 1493 | __ cmpb(FieldOperand(rcx, Map::kInstanceSizeOffset), |
| 1494 | Immediate(JSValue::kSize >> kPointerSizeLog2)); |
| 1495 | __ Assert(equal, "Unexpected string wrapper instance size"); |
| 1496 | __ cmpb(FieldOperand(rcx, Map::kUnusedPropertyFieldsOffset), Immediate(0)); |
| 1497 | __ Assert(equal, "Unexpected unused properties of string wrapper"); |
| 1498 | } |
| 1499 | __ movq(FieldOperand(rax, HeapObject::kMapOffset), rcx); |
| 1500 | |
| 1501 | // Set properties and elements. |
| 1502 | __ LoadRoot(rcx, Heap::kEmptyFixedArrayRootIndex); |
| 1503 | __ movq(FieldOperand(rax, JSObject::kPropertiesOffset), rcx); |
| 1504 | __ movq(FieldOperand(rax, JSObject::kElementsOffset), rcx); |
| 1505 | |
| 1506 | // Set the value. |
| 1507 | __ movq(FieldOperand(rax, JSValue::kValueOffset), rbx); |
| 1508 | |
| 1509 | // Ensure the object is fully initialized. |
| 1510 | STATIC_ASSERT(JSValue::kSize == 4 * kPointerSize); |
| 1511 | |
| 1512 | // We're done. Return. |
| 1513 | __ ret(0); |
| 1514 | |
| 1515 | // The argument was not found in the number to string cache. Check |
| 1516 | // if it's a string already before calling the conversion builtin. |
| 1517 | Label convert_argument; |
| 1518 | __ bind(¬_cached); |
| 1519 | STATIC_ASSERT(kSmiTag == 0); |
| 1520 | __ JumpIfSmi(rax, &convert_argument); |
| 1521 | Condition is_string = masm->IsObjectStringType(rax, rbx, rcx); |
| 1522 | __ j(NegateCondition(is_string), &convert_argument); |
| 1523 | __ movq(rbx, rax); |
| 1524 | __ IncrementCounter(counters->string_ctor_string_value(), 1); |
| 1525 | __ jmp(&argument_is_string); |
| 1526 | |
| 1527 | // Invoke the conversion builtin and put the result into rbx. |
| 1528 | __ bind(&convert_argument); |
| 1529 | __ IncrementCounter(counters->string_ctor_conversions(), 1); |
| 1530 | { |
| 1531 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1532 | __ push(rdi); // Preserve the function. |
| 1533 | __ push(rax); |
| 1534 | __ InvokeBuiltin(Builtins::TO_STRING, CALL_FUNCTION); |
| 1535 | __ pop(rdi); |
| 1536 | } |
| 1537 | __ movq(rbx, rax); |
| 1538 | __ jmp(&argument_is_string); |
| 1539 | |
| 1540 | // Load the empty string into rbx, remove the receiver from the |
| 1541 | // stack, and jump back to the case where the argument is a string. |
| 1542 | __ bind(&no_arguments); |
| 1543 | __ LoadRoot(rbx, Heap::kEmptyStringRootIndex); |
| 1544 | __ pop(rcx); |
| 1545 | __ lea(rsp, Operand(rsp, kPointerSize)); |
| 1546 | __ push(rcx); |
| 1547 | __ jmp(&argument_is_string); |
| 1548 | |
| 1549 | // At this point the argument is already a string. Call runtime to |
| 1550 | // create a string wrapper. |
| 1551 | __ bind(&gc_required); |
| 1552 | __ IncrementCounter(counters->string_ctor_gc_required(), 1); |
| 1553 | { |
| 1554 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1555 | __ push(rbx); |
| 1556 | __ CallRuntime(Runtime::kNewStringWrapper, 1); |
| 1557 | } |
| 1558 | __ ret(0); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1559 | } |
| 1560 | |
| 1561 | |
| 1562 | static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) { |
| 1563 | __ push(rbp); |
| 1564 | __ movq(rbp, rsp); |
| 1565 | |
| 1566 | // Store the arguments adaptor context sentinel. |
| 1567 | __ Push(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR)); |
| 1568 | |
| 1569 | // Push the function on the stack. |
| 1570 | __ push(rdi); |
| 1571 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1572 | // Preserve the number of arguments on the stack. Must preserve rax, |
| 1573 | // rbx and rcx because these registers are used when copying the |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1574 | // arguments and the receiver. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1575 | __ Integer32ToSmi(r8, rax); |
| 1576 | __ push(r8); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1577 | } |
| 1578 | |
| 1579 | |
| 1580 | static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) { |
| 1581 | // Retrieve the number of arguments from the stack. Number is a Smi. |
| 1582 | __ movq(rbx, Operand(rbp, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 1583 | |
| 1584 | // Leave the frame. |
| 1585 | __ movq(rsp, rbp); |
| 1586 | __ pop(rbp); |
| 1587 | |
| 1588 | // Remove caller arguments from the stack. |
| 1589 | __ pop(rcx); |
| 1590 | SmiIndex index = masm->SmiToIndex(rbx, rbx, kPointerSizeLog2); |
| 1591 | __ lea(rsp, Operand(rsp, index.reg, index.scale, 1 * kPointerSize)); |
| 1592 | __ push(rcx); |
| 1593 | } |
| 1594 | |
| 1595 | |
| 1596 | void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) { |
| 1597 | // ----------- S t a t e ------------- |
| 1598 | // -- rax : actual number of arguments |
| 1599 | // -- rbx : expected number of arguments |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1600 | // -- rcx : call kind information |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1601 | // -- rdx : code entry to call |
| 1602 | // ----------------------------------- |
| 1603 | |
| 1604 | Label invoke, dont_adapt_arguments; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1605 | Counters* counters = masm->isolate()->counters(); |
| 1606 | __ IncrementCounter(counters->arguments_adaptors(), 1); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1607 | |
| 1608 | Label enough, too_few; |
| 1609 | __ cmpq(rax, rbx); |
| 1610 | __ j(less, &too_few); |
| 1611 | __ cmpq(rbx, Immediate(SharedFunctionInfo::kDontAdaptArgumentsSentinel)); |
| 1612 | __ j(equal, &dont_adapt_arguments); |
| 1613 | |
| 1614 | { // Enough parameters: Actual >= expected. |
| 1615 | __ bind(&enough); |
| 1616 | EnterArgumentsAdaptorFrame(masm); |
| 1617 | |
| 1618 | // Copy receiver and all expected arguments. |
| 1619 | const int offset = StandardFrameConstants::kCallerSPOffset; |
| 1620 | __ lea(rax, Operand(rbp, rax, times_pointer_size, offset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1621 | __ Set(r8, -1); // account for receiver |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1622 | |
| 1623 | Label copy; |
| 1624 | __ bind(©); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1625 | __ incq(r8); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1626 | __ push(Operand(rax, 0)); |
| 1627 | __ subq(rax, Immediate(kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1628 | __ cmpq(r8, rbx); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1629 | __ j(less, ©); |
| 1630 | __ jmp(&invoke); |
| 1631 | } |
| 1632 | |
| 1633 | { // Too few parameters: Actual < expected. |
| 1634 | __ bind(&too_few); |
| 1635 | EnterArgumentsAdaptorFrame(masm); |
| 1636 | |
| 1637 | // Copy receiver and all actual arguments. |
| 1638 | const int offset = StandardFrameConstants::kCallerSPOffset; |
| 1639 | __ lea(rdi, Operand(rbp, rax, times_pointer_size, offset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1640 | __ Set(r8, -1); // account for receiver |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1641 | |
| 1642 | Label copy; |
| 1643 | __ bind(©); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1644 | __ incq(r8); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1645 | __ push(Operand(rdi, 0)); |
| 1646 | __ subq(rdi, Immediate(kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1647 | __ cmpq(r8, rax); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1648 | __ j(less, ©); |
| 1649 | |
| 1650 | // Fill remaining expected arguments with undefined values. |
| 1651 | Label fill; |
| 1652 | __ LoadRoot(kScratchRegister, Heap::kUndefinedValueRootIndex); |
| 1653 | __ bind(&fill); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1654 | __ incq(r8); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1655 | __ push(kScratchRegister); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1656 | __ cmpq(r8, rbx); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1657 | __ j(less, &fill); |
| 1658 | |
| 1659 | // Restore function pointer. |
| 1660 | __ movq(rdi, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1661 | } |
| 1662 | |
| 1663 | // Call the entry point. |
| 1664 | __ bind(&invoke); |
| 1665 | __ call(rdx); |
| 1666 | |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1667 | // Store offset of return address for deoptimizer. |
| 1668 | masm->isolate()->heap()->SetArgumentsAdaptorDeoptPCOffset(masm->pc_offset()); |
| 1669 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1670 | // Leave frame and return. |
| 1671 | LeaveArgumentsAdaptorFrame(masm); |
| 1672 | __ ret(0); |
| 1673 | |
| 1674 | // ------------------------------------------- |
| 1675 | // Dont adapt arguments. |
| 1676 | // ------------------------------------------- |
| 1677 | __ bind(&dont_adapt_arguments); |
| 1678 | __ jmp(rdx); |
| 1679 | } |
| 1680 | |
| 1681 | |
| 1682 | void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) { |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1683 | // Get the loop depth of the stack guard check. This is recorded in |
| 1684 | // a test(rax, depth) instruction right after the call. |
| 1685 | Label stack_check; |
| 1686 | __ movq(rbx, Operand(rsp, 0)); // return address |
| 1687 | __ movzxbq(rbx, Operand(rbx, 1)); // depth |
| 1688 | |
| 1689 | // Get the loop nesting level at which we allow OSR from the |
| 1690 | // unoptimized code and check if we want to do OSR yet. If not we |
| 1691 | // should perform a stack guard check so we can get interrupts while |
| 1692 | // waiting for on-stack replacement. |
| 1693 | __ movq(rax, Operand(rbp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1694 | __ movq(rcx, FieldOperand(rax, JSFunction::kSharedFunctionInfoOffset)); |
| 1695 | __ movq(rcx, FieldOperand(rcx, SharedFunctionInfo::kCodeOffset)); |
| 1696 | __ cmpb(rbx, FieldOperand(rcx, Code::kAllowOSRAtLoopNestingLevelOffset)); |
| 1697 | __ j(greater, &stack_check); |
| 1698 | |
| 1699 | // Pass the function to optimize as the argument to the on-stack |
| 1700 | // replacement runtime function. |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1701 | { |
| 1702 | FrameScope scope(masm, StackFrame::INTERNAL); |
| 1703 | __ push(rax); |
| 1704 | __ CallRuntime(Runtime::kCompileForOnStackReplacement, 1); |
| 1705 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1706 | |
| 1707 | // If the result was -1 it means that we couldn't optimize the |
| 1708 | // function. Just return and continue in the unoptimized version. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1709 | Label skip; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1710 | __ SmiCompare(rax, Smi::FromInt(-1)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1711 | __ j(not_equal, &skip, Label::kNear); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1712 | __ ret(0); |
| 1713 | |
| 1714 | // If we decide not to perform on-stack replacement we perform a |
| 1715 | // stack guard check to enable interrupts. |
| 1716 | __ bind(&stack_check); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1717 | Label ok; |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1718 | __ CompareRoot(rsp, Heap::kStackLimitRootIndex); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1719 | __ j(above_equal, &ok, Label::kNear); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1720 | |
| 1721 | StackCheckStub stub; |
| 1722 | __ TailCallStub(&stub); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame^] | 1723 | if (FLAG_debug_code) { |
| 1724 | __ Abort("Unreachable code: returned from tail call."); |
| 1725 | } |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1726 | __ bind(&ok); |
| 1727 | __ ret(0); |
| 1728 | |
| 1729 | __ bind(&skip); |
| 1730 | // Untag the AST id and push it on the stack. |
| 1731 | __ SmiToInteger32(rax, rax); |
| 1732 | __ push(rax); |
| 1733 | |
| 1734 | // Generate the code for doing the frame-to-frame translation using |
| 1735 | // the deoptimizer infrastructure. |
| 1736 | Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR); |
| 1737 | generator.Generate(); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1738 | } |
| 1739 | |
| 1740 | |
| 1741 | #undef __ |
| 1742 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1743 | } } // namespace v8::internal |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1744 | |
| 1745 | #endif // V8_TARGET_ARCH_X64 |