Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1 | // Copyright 2011 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" |
| 29 | |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 30 | #if defined(V8_TARGET_ARCH_IA32) |
| 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 | |
| 39 | |
| 40 | #define __ ACCESS_MASM(masm) |
| 41 | |
| 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 | // -- eax : number of arguments excluding receiver |
| 48 | // -- edi : called function (only guaranteed when |
| 49 | // extra_args requires it) |
| 50 | // -- esi : context |
| 51 | // -- esp[0] : return address |
| 52 | // -- esp[4] : last argument |
| 53 | // -- ... |
| 54 | // -- esp[4 * argc] : first argument (argc == eax) |
| 55 | // -- esp[4 * (argc +1)] : receiver |
| 56 | // ----------------------------------- |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 57 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 58 | // Insert extra arguments. |
| 59 | int num_extra_args = 0; |
| 60 | if (extra_args == NEEDS_CALLED_FUNCTION) { |
| 61 | num_extra_args = 1; |
| 62 | Register scratch = ebx; |
| 63 | __ pop(scratch); // Save return address. |
| 64 | __ push(edi); |
| 65 | __ push(scratch); // Restore return address. |
| 66 | } else { |
| 67 | ASSERT(extra_args == NO_EXTRA_ARGUMENTS); |
| 68 | } |
| 69 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 70 | // JumpToExternalReference expects eax to contain the number of arguments |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 71 | // including the receiver and the extra arguments. |
| 72 | __ add(Operand(eax), Immediate(num_extra_args + 1)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 73 | __ JumpToExternalReference(ExternalReference(id, masm->isolate())); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 74 | } |
| 75 | |
| 76 | |
| 77 | void Builtins::Generate_JSConstructCall(MacroAssembler* masm) { |
| 78 | // ----------- S t a t e ------------- |
| 79 | // -- eax: number of arguments |
| 80 | // -- edi: constructor function |
| 81 | // ----------------------------------- |
| 82 | |
| 83 | Label non_function_call; |
| 84 | // Check that function is not a smi. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame^] | 85 | __ JumpIfSmi(edi, &non_function_call); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 86 | // Check that function is a JSFunction. |
| 87 | __ CmpObjectType(edi, JS_FUNCTION_TYPE, ecx); |
| 88 | __ j(not_equal, &non_function_call); |
| 89 | |
| 90 | // Jump to the function-specific construct stub. |
| 91 | __ mov(ebx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); |
| 92 | __ mov(ebx, FieldOperand(ebx, SharedFunctionInfo::kConstructStubOffset)); |
| 93 | __ lea(ebx, FieldOperand(ebx, Code::kHeaderSize)); |
| 94 | __ jmp(Operand(ebx)); |
| 95 | |
| 96 | // edi: called object |
| 97 | // eax: number of arguments |
| 98 | __ bind(&non_function_call); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 99 | // Set expected number of arguments to zero (not changing eax). |
| 100 | __ Set(ebx, Immediate(0)); |
| 101 | __ GetBuiltinEntry(edx, Builtins::CALL_NON_FUNCTION_AS_CONSTRUCTOR); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 102 | Handle<Code> arguments_adaptor = |
| 103 | masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 104 | __ SetCallKind(ecx, CALL_AS_METHOD); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 105 | __ jmp(arguments_adaptor, RelocInfo::CODE_TARGET); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 106 | } |
| 107 | |
| 108 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 109 | static void Generate_JSConstructStubHelper(MacroAssembler* masm, |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 110 | bool is_api_function, |
| 111 | bool count_constructions) { |
| 112 | // Should never count constructions for api objects. |
| 113 | ASSERT(!is_api_function || !count_constructions); |
| 114 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 115 | // Enter a construct frame. |
| 116 | __ EnterConstructFrame(); |
| 117 | |
| 118 | // Store a smi-tagged arguments count on the stack. |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 119 | __ SmiTag(eax); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 120 | __ push(eax); |
| 121 | |
| 122 | // Push the function to invoke on the stack. |
| 123 | __ push(edi); |
| 124 | |
| 125 | // Try to allocate the object without transitioning into C code. If any of the |
| 126 | // preconditions is not met, the code bails out to the runtime call. |
| 127 | Label rt_call, allocated; |
| 128 | if (FLAG_inline_new) { |
| 129 | Label undo_allocation; |
| 130 | #ifdef ENABLE_DEBUGGER_SUPPORT |
| 131 | ExternalReference debug_step_in_fp = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 132 | ExternalReference::debug_step_in_fp_address(masm->isolate()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 133 | __ cmp(Operand::StaticVariable(debug_step_in_fp), Immediate(0)); |
| 134 | __ j(not_equal, &rt_call); |
| 135 | #endif |
| 136 | |
| 137 | // Verified that the constructor is a JSFunction. |
| 138 | // Load the initial map and verify that it is in fact a map. |
| 139 | // edi: constructor |
| 140 | __ mov(eax, FieldOperand(edi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 141 | // Will both indicate a NULL and a Smi |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame^] | 142 | __ JumpIfSmi(eax, &rt_call); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 143 | // edi: constructor |
| 144 | // eax: initial map (if proven valid below) |
| 145 | __ CmpObjectType(eax, MAP_TYPE, ebx); |
| 146 | __ j(not_equal, &rt_call); |
| 147 | |
| 148 | // Check that the constructor is not constructing a JSFunction (see comments |
| 149 | // in Runtime_NewObject in runtime.cc). In which case the initial map's |
| 150 | // instance type would be JS_FUNCTION_TYPE. |
| 151 | // edi: constructor |
| 152 | // eax: initial map |
| 153 | __ CmpInstanceType(eax, JS_FUNCTION_TYPE); |
| 154 | __ j(equal, &rt_call); |
| 155 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 156 | if (count_constructions) { |
| 157 | Label allocate; |
| 158 | // Decrease generous allocation count. |
| 159 | __ mov(ecx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); |
| 160 | __ dec_b(FieldOperand(ecx, SharedFunctionInfo::kConstructionCountOffset)); |
| 161 | __ j(not_zero, &allocate); |
| 162 | |
| 163 | __ push(eax); |
| 164 | __ push(edi); |
| 165 | |
| 166 | __ push(edi); // constructor |
| 167 | // The call will replace the stub, so the countdown is only done once. |
| 168 | __ CallRuntime(Runtime::kFinalizeInstanceSize, 1); |
| 169 | |
| 170 | __ pop(edi); |
| 171 | __ pop(eax); |
| 172 | |
| 173 | __ bind(&allocate); |
| 174 | } |
| 175 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 176 | // Now allocate the JSObject on the heap. |
| 177 | // edi: constructor |
| 178 | // eax: initial map |
| 179 | __ movzx_b(edi, FieldOperand(eax, Map::kInstanceSizeOffset)); |
| 180 | __ shl(edi, kPointerSizeLog2); |
| 181 | __ AllocateInNewSpace(edi, ebx, edi, no_reg, &rt_call, NO_ALLOCATION_FLAGS); |
| 182 | // Allocated the JSObject, now initialize the fields. |
| 183 | // eax: initial map |
| 184 | // ebx: JSObject |
| 185 | // edi: start of next object |
| 186 | __ mov(Operand(ebx, JSObject::kMapOffset), eax); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 187 | Factory* factory = masm->isolate()->factory(); |
| 188 | __ mov(ecx, factory->empty_fixed_array()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 189 | __ mov(Operand(ebx, JSObject::kPropertiesOffset), ecx); |
| 190 | __ mov(Operand(ebx, JSObject::kElementsOffset), ecx); |
| 191 | // Set extra fields in the newly allocated object. |
| 192 | // eax: initial map |
| 193 | // ebx: JSObject |
| 194 | // edi: start of next object |
| 195 | { Label loop, entry; |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 196 | // To allow for truncation. |
| 197 | if (count_constructions) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 198 | __ mov(edx, factory->one_pointer_filler_map()); |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 199 | } else { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 200 | __ mov(edx, factory->undefined_value()); |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 201 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 202 | __ lea(ecx, Operand(ebx, JSObject::kHeaderSize)); |
| 203 | __ jmp(&entry); |
| 204 | __ bind(&loop); |
| 205 | __ mov(Operand(ecx, 0), edx); |
| 206 | __ add(Operand(ecx), Immediate(kPointerSize)); |
| 207 | __ bind(&entry); |
| 208 | __ cmp(ecx, Operand(edi)); |
| 209 | __ j(less, &loop); |
| 210 | } |
| 211 | |
| 212 | // Add the object tag to make the JSObject real, so that we can continue and |
| 213 | // jump into the continuation code at any time from now on. Any failures |
| 214 | // need to undo the allocation, so that the heap is in a consistent state |
| 215 | // and verifiable. |
| 216 | // eax: initial map |
| 217 | // ebx: JSObject |
| 218 | // edi: start of next object |
| 219 | __ or_(Operand(ebx), Immediate(kHeapObjectTag)); |
| 220 | |
| 221 | // Check if a non-empty properties array is needed. |
| 222 | // Allocate and initialize a FixedArray if it is. |
| 223 | // eax: initial map |
| 224 | // ebx: JSObject |
| 225 | // edi: start of next object |
| 226 | // Calculate the total number of properties described by the map. |
| 227 | __ movzx_b(edx, FieldOperand(eax, Map::kUnusedPropertyFieldsOffset)); |
| 228 | __ movzx_b(ecx, FieldOperand(eax, Map::kPreAllocatedPropertyFieldsOffset)); |
| 229 | __ add(edx, Operand(ecx)); |
| 230 | // Calculate unused properties past the end of the in-object properties. |
| 231 | __ movzx_b(ecx, FieldOperand(eax, Map::kInObjectPropertiesOffset)); |
| 232 | __ sub(edx, Operand(ecx)); |
| 233 | // Done if no extra properties are to be allocated. |
| 234 | __ j(zero, &allocated); |
| 235 | __ Assert(positive, "Property allocation count failed."); |
| 236 | |
| 237 | // Scale the number of elements by pointer size and add the header for |
| 238 | // FixedArrays to the start of the next object calculation from above. |
| 239 | // ebx: JSObject |
| 240 | // edi: start of next object (will be start of FixedArray) |
| 241 | // edx: number of elements in properties array |
| 242 | __ AllocateInNewSpace(FixedArray::kHeaderSize, |
| 243 | times_pointer_size, |
| 244 | edx, |
| 245 | edi, |
| 246 | ecx, |
| 247 | no_reg, |
| 248 | &undo_allocation, |
| 249 | RESULT_CONTAINS_TOP); |
| 250 | |
| 251 | // Initialize the FixedArray. |
| 252 | // ebx: JSObject |
| 253 | // edi: FixedArray |
| 254 | // edx: number of elements |
| 255 | // ecx: start of next object |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 256 | __ mov(eax, factory->fixed_array_map()); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 257 | __ mov(Operand(edi, FixedArray::kMapOffset), eax); // setup the map |
| 258 | __ SmiTag(edx); |
| 259 | __ mov(Operand(edi, FixedArray::kLengthOffset), edx); // and length |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 260 | |
| 261 | // Initialize the fields to undefined. |
| 262 | // ebx: JSObject |
| 263 | // edi: FixedArray |
| 264 | // ecx: start of next object |
| 265 | { Label loop, entry; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 266 | __ mov(edx, factory->undefined_value()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 267 | __ lea(eax, Operand(edi, FixedArray::kHeaderSize)); |
| 268 | __ jmp(&entry); |
| 269 | __ bind(&loop); |
| 270 | __ mov(Operand(eax, 0), edx); |
| 271 | __ add(Operand(eax), Immediate(kPointerSize)); |
| 272 | __ bind(&entry); |
| 273 | __ cmp(eax, Operand(ecx)); |
| 274 | __ j(below, &loop); |
| 275 | } |
| 276 | |
| 277 | // Store the initialized FixedArray into the properties field of |
| 278 | // the JSObject |
| 279 | // ebx: JSObject |
| 280 | // edi: FixedArray |
| 281 | __ or_(Operand(edi), Immediate(kHeapObjectTag)); // add the heap tag |
| 282 | __ mov(FieldOperand(ebx, JSObject::kPropertiesOffset), edi); |
| 283 | |
| 284 | |
| 285 | // Continue with JSObject being successfully allocated |
| 286 | // ebx: JSObject |
| 287 | __ jmp(&allocated); |
| 288 | |
| 289 | // Undo the setting of the new top so that the heap is verifiable. For |
| 290 | // example, the map's unused properties potentially do not match the |
| 291 | // allocated objects unused properties. |
| 292 | // ebx: JSObject (previous new top) |
| 293 | __ bind(&undo_allocation); |
| 294 | __ UndoAllocationInNewSpace(ebx); |
| 295 | } |
| 296 | |
| 297 | // Allocate the new receiver object using the runtime call. |
| 298 | __ bind(&rt_call); |
| 299 | // Must restore edi (constructor) before calling runtime. |
| 300 | __ mov(edi, Operand(esp, 0)); |
| 301 | // edi: function (constructor) |
| 302 | __ push(edi); |
| 303 | __ CallRuntime(Runtime::kNewObject, 1); |
| 304 | __ mov(ebx, Operand(eax)); // store result in ebx |
| 305 | |
| 306 | // New object allocated. |
| 307 | // ebx: newly allocated object |
| 308 | __ bind(&allocated); |
| 309 | // Retrieve the function from the stack. |
| 310 | __ pop(edi); |
| 311 | |
| 312 | // Retrieve smi-tagged arguments count from the stack. |
| 313 | __ mov(eax, Operand(esp, 0)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 314 | __ SmiUntag(eax); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 315 | |
| 316 | // Push the allocated receiver to the stack. We need two copies |
| 317 | // because we may have to return the original one and the calling |
| 318 | // conventions dictate that the called function pops the receiver. |
| 319 | __ push(ebx); |
| 320 | __ push(ebx); |
| 321 | |
| 322 | // Setup pointer to last argument. |
| 323 | __ lea(ebx, Operand(ebp, StandardFrameConstants::kCallerSPOffset)); |
| 324 | |
| 325 | // Copy arguments and receiver to the expression stack. |
| 326 | Label loop, entry; |
| 327 | __ mov(ecx, Operand(eax)); |
| 328 | __ jmp(&entry); |
| 329 | __ bind(&loop); |
| 330 | __ push(Operand(ebx, ecx, times_4, 0)); |
| 331 | __ bind(&entry); |
| 332 | __ dec(ecx); |
| 333 | __ j(greater_equal, &loop); |
| 334 | |
| 335 | // Call the function. |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 336 | if (is_api_function) { |
| 337 | __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 338 | Handle<Code> code = |
| 339 | masm->isolate()->builtins()->HandleApiCallConstruct(); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 340 | ParameterCount expected(0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 341 | __ InvokeCode(code, expected, expected, RelocInfo::CODE_TARGET, |
| 342 | CALL_FUNCTION, NullCallWrapper(), CALL_AS_METHOD); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 343 | } else { |
| 344 | ParameterCount actual(eax); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 345 | __ InvokeFunction(edi, actual, CALL_FUNCTION, |
| 346 | NullCallWrapper(), CALL_AS_METHOD); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 347 | } |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 348 | |
| 349 | // Restore context from the frame. |
| 350 | __ mov(esi, Operand(ebp, StandardFrameConstants::kContextOffset)); |
| 351 | |
| 352 | // If the result is an object (in the ECMA sense), we should get rid |
| 353 | // of the receiver and use the result; see ECMA-262 section 13.2.2-7 |
| 354 | // on page 74. |
| 355 | Label use_receiver, exit; |
| 356 | |
| 357 | // If the result is a smi, it is *not* an object in the ECMA sense. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame^] | 358 | __ JumpIfSmi(eax, &use_receiver); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 359 | |
| 360 | // If the type of the result (stored in its map) is less than |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame^] | 361 | // FIRST_SPEC_OBJECT_TYPE, it is not an object in the ECMA sense. |
| 362 | __ CmpObjectType(eax, FIRST_SPEC_OBJECT_TYPE, ecx); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 363 | __ j(above_equal, &exit); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 364 | |
| 365 | // Throw away the result of the constructor invocation and use the |
| 366 | // on-stack receiver as the result. |
| 367 | __ bind(&use_receiver); |
| 368 | __ mov(eax, Operand(esp, 0)); |
| 369 | |
| 370 | // Restore the arguments count and leave the construct frame. |
| 371 | __ bind(&exit); |
| 372 | __ mov(ebx, Operand(esp, kPointerSize)); // get arguments count |
| 373 | __ LeaveConstructFrame(); |
| 374 | |
| 375 | // Remove caller arguments from the stack and return. |
| 376 | ASSERT(kSmiTagSize == 1 && kSmiTag == 0); |
| 377 | __ pop(ecx); |
| 378 | __ lea(esp, Operand(esp, ebx, times_2, 1 * kPointerSize)); // 1 ~ receiver |
| 379 | __ push(ecx); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 380 | __ IncrementCounter(masm->isolate()->counters()->constructed_objects(), 1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 381 | __ ret(0); |
| 382 | } |
| 383 | |
| 384 | |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 385 | void Builtins::Generate_JSConstructStubCountdown(MacroAssembler* masm) { |
| 386 | Generate_JSConstructStubHelper(masm, false, true); |
| 387 | } |
| 388 | |
| 389 | |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 390 | void Builtins::Generate_JSConstructStubGeneric(MacroAssembler* masm) { |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 391 | Generate_JSConstructStubHelper(masm, false, false); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 392 | } |
| 393 | |
| 394 | |
| 395 | void Builtins::Generate_JSConstructStubApi(MacroAssembler* masm) { |
Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 396 | Generate_JSConstructStubHelper(masm, true, false); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 397 | } |
| 398 | |
| 399 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 400 | static void Generate_JSEntryTrampolineHelper(MacroAssembler* masm, |
| 401 | bool is_construct) { |
| 402 | // Clear the context before we push it when entering the JS frame. |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 403 | __ Set(esi, Immediate(0)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 404 | |
| 405 | // Enter an internal frame. |
| 406 | __ EnterInternalFrame(); |
| 407 | |
| 408 | // Load the previous frame pointer (ebx) to access C arguments |
| 409 | __ mov(ebx, Operand(ebp, 0)); |
| 410 | |
| 411 | // Get the function from the frame and setup the context. |
| 412 | __ mov(ecx, Operand(ebx, EntryFrameConstants::kFunctionArgOffset)); |
| 413 | __ mov(esi, FieldOperand(ecx, JSFunction::kContextOffset)); |
| 414 | |
| 415 | // Push the function and the receiver onto the stack. |
| 416 | __ push(ecx); |
| 417 | __ push(Operand(ebx, EntryFrameConstants::kReceiverArgOffset)); |
| 418 | |
| 419 | // Load the number of arguments and setup pointer to the arguments. |
| 420 | __ mov(eax, Operand(ebx, EntryFrameConstants::kArgcOffset)); |
| 421 | __ mov(ebx, Operand(ebx, EntryFrameConstants::kArgvOffset)); |
| 422 | |
| 423 | // Copy arguments to the stack in a loop. |
| 424 | Label loop, entry; |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 425 | __ Set(ecx, Immediate(0)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 426 | __ jmp(&entry); |
| 427 | __ bind(&loop); |
| 428 | __ mov(edx, Operand(ebx, ecx, times_4, 0)); // push parameter from argv |
| 429 | __ push(Operand(edx, 0)); // dereference handle |
| 430 | __ inc(Operand(ecx)); |
| 431 | __ bind(&entry); |
| 432 | __ cmp(ecx, Operand(eax)); |
| 433 | __ j(not_equal, &loop); |
| 434 | |
| 435 | // Get the function from the stack and call it. |
| 436 | __ mov(edi, Operand(esp, eax, times_4, +1 * kPointerSize)); // +1 ~ receiver |
| 437 | |
| 438 | // Invoke the code. |
| 439 | if (is_construct) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 440 | __ call(masm->isolate()->builtins()->JSConstructCall(), |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 441 | RelocInfo::CODE_TARGET); |
| 442 | } else { |
| 443 | ParameterCount actual(eax); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 444 | __ InvokeFunction(edi, actual, CALL_FUNCTION, |
| 445 | NullCallWrapper(), CALL_AS_METHOD); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 446 | } |
| 447 | |
| 448 | // Exit the JS frame. Notice that this also removes the empty |
| 449 | // context and the function left on the stack by the code |
| 450 | // invocation. |
| 451 | __ LeaveInternalFrame(); |
| 452 | __ ret(1 * kPointerSize); // remove receiver |
| 453 | } |
| 454 | |
| 455 | |
| 456 | void Builtins::Generate_JSEntryTrampoline(MacroAssembler* masm) { |
| 457 | Generate_JSEntryTrampolineHelper(masm, false); |
| 458 | } |
| 459 | |
| 460 | |
| 461 | void Builtins::Generate_JSConstructEntryTrampoline(MacroAssembler* masm) { |
| 462 | Generate_JSEntryTrampolineHelper(masm, true); |
| 463 | } |
| 464 | |
| 465 | |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 466 | void Builtins::Generate_LazyCompile(MacroAssembler* masm) { |
| 467 | // Enter an internal frame. |
| 468 | __ EnterInternalFrame(); |
| 469 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 470 | // Push a copy of the function. |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 471 | __ push(edi); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 472 | // Push call kind information. |
| 473 | __ push(ecx); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 474 | |
| 475 | __ push(edi); // Function is also the parameter to the runtime call. |
| 476 | __ CallRuntime(Runtime::kLazyCompile, 1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 477 | |
| 478 | // Restore call kind information. |
| 479 | __ pop(ecx); |
| 480 | // Restore receiver. |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 481 | __ pop(edi); |
| 482 | |
| 483 | // Tear down temporary frame. |
| 484 | __ LeaveInternalFrame(); |
| 485 | |
| 486 | // Do a tail-call of the compiled function. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 487 | __ lea(eax, FieldOperand(eax, Code::kHeaderSize)); |
| 488 | __ jmp(Operand(eax)); |
Iain Merrick | 7568138 | 2010-08-19 15:07:18 +0100 | [diff] [blame] | 489 | } |
| 490 | |
| 491 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 492 | void Builtins::Generate_LazyRecompile(MacroAssembler* masm) { |
| 493 | // Enter an internal frame. |
| 494 | __ EnterInternalFrame(); |
| 495 | |
| 496 | // Push a copy of the function onto the stack. |
| 497 | __ push(edi); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 498 | // Push call kind information. |
| 499 | __ push(ecx); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 500 | |
| 501 | __ push(edi); // Function is also the parameter to the runtime call. |
| 502 | __ CallRuntime(Runtime::kLazyRecompile, 1); |
| 503 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 504 | // Restore call kind information. |
| 505 | __ pop(ecx); |
| 506 | // Restore receiver. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 507 | __ pop(edi); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 508 | |
| 509 | // Tear down temporary frame. |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 510 | __ LeaveInternalFrame(); |
| 511 | |
| 512 | // Do a tail-call of the compiled function. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 513 | __ lea(eax, FieldOperand(eax, Code::kHeaderSize)); |
| 514 | __ jmp(Operand(eax)); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 515 | } |
| 516 | |
| 517 | |
| 518 | static void Generate_NotifyDeoptimizedHelper(MacroAssembler* masm, |
| 519 | Deoptimizer::BailoutType type) { |
| 520 | // Enter an internal frame. |
| 521 | __ EnterInternalFrame(); |
| 522 | |
| 523 | // Pass the function and deoptimization type to the runtime system. |
| 524 | __ push(Immediate(Smi::FromInt(static_cast<int>(type)))); |
| 525 | __ CallRuntime(Runtime::kNotifyDeoptimized, 1); |
| 526 | |
| 527 | // Tear down temporary frame. |
| 528 | __ LeaveInternalFrame(); |
| 529 | |
| 530 | // Get the full codegen state from the stack and untag it. |
| 531 | __ mov(ecx, Operand(esp, 1 * kPointerSize)); |
| 532 | __ SmiUntag(ecx); |
| 533 | |
| 534 | // Switch on the state. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 535 | Label not_no_registers, not_tos_eax; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 536 | __ cmp(ecx, FullCodeGenerator::NO_REGISTERS); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 537 | __ j(not_equal, ¬_no_registers, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 538 | __ ret(1 * kPointerSize); // Remove state. |
| 539 | |
| 540 | __ bind(¬_no_registers); |
| 541 | __ mov(eax, Operand(esp, 2 * kPointerSize)); |
| 542 | __ cmp(ecx, FullCodeGenerator::TOS_REG); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 543 | __ j(not_equal, ¬_tos_eax, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 544 | __ ret(2 * kPointerSize); // Remove state, eax. |
| 545 | |
| 546 | __ bind(¬_tos_eax); |
| 547 | __ Abort("no cases left"); |
| 548 | } |
| 549 | |
| 550 | |
| 551 | void Builtins::Generate_NotifyDeoptimized(MacroAssembler* masm) { |
| 552 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::EAGER); |
| 553 | } |
| 554 | |
| 555 | |
| 556 | void Builtins::Generate_NotifyLazyDeoptimized(MacroAssembler* masm) { |
| 557 | Generate_NotifyDeoptimizedHelper(masm, Deoptimizer::LAZY); |
| 558 | } |
| 559 | |
| 560 | |
| 561 | void Builtins::Generate_NotifyOSR(MacroAssembler* masm) { |
| 562 | // TODO(kasperl): Do we need to save/restore the XMM registers too? |
| 563 | |
| 564 | // For now, we are relying on the fact that Runtime::NotifyOSR |
| 565 | // doesn't do any garbage collection which allows us to save/restore |
| 566 | // the registers without worrying about which of them contain |
| 567 | // pointers. This seems a bit fragile. |
| 568 | __ pushad(); |
| 569 | __ EnterInternalFrame(); |
| 570 | __ CallRuntime(Runtime::kNotifyOSR, 0); |
| 571 | __ LeaveInternalFrame(); |
| 572 | __ popad(); |
| 573 | __ ret(0); |
| 574 | } |
| 575 | |
| 576 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 577 | void Builtins::Generate_FunctionCall(MacroAssembler* masm) { |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 578 | Factory* factory = masm->isolate()->factory(); |
| 579 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 580 | // 1. Make sure we have at least one argument. |
| 581 | { Label done; |
| 582 | __ test(eax, Operand(eax)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 583 | __ j(not_zero, &done); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 584 | __ pop(ebx); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 585 | __ push(Immediate(factory->undefined_value())); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 586 | __ push(ebx); |
| 587 | __ inc(eax); |
| 588 | __ bind(&done); |
| 589 | } |
| 590 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 591 | // 2. Get the function to call (passed as receiver) from the stack, check |
| 592 | // if it is a function. |
| 593 | Label non_function; |
| 594 | // 1 ~ return address. |
| 595 | __ mov(edi, Operand(esp, eax, times_4, 1 * kPointerSize)); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame^] | 596 | __ JumpIfSmi(edi, &non_function); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 597 | __ CmpObjectType(edi, JS_FUNCTION_TYPE, ecx); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 598 | __ j(not_equal, &non_function); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 599 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 600 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 601 | // 3a. Patch the first argument if necessary when calling a function. |
| 602 | Label shift_arguments; |
| 603 | { Label convert_to_object, use_global_receiver, patch_receiver; |
| 604 | // Change context eagerly in case we need the global receiver. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 605 | __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); |
| 606 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 607 | // Do not transform the receiver for strict mode functions. |
| 608 | __ mov(ebx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); |
| 609 | __ test_b(FieldOperand(ebx, SharedFunctionInfo::kStrictModeByteOffset), |
| 610 | 1 << SharedFunctionInfo::kStrictModeBitWithinByte); |
| 611 | __ j(not_equal, &shift_arguments); |
| 612 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 613 | // Do not transform the receiver for natives (shared already in ebx). |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame^] | 614 | __ test_b(FieldOperand(ebx, SharedFunctionInfo::kNativeByteOffset), |
| 615 | 1 << SharedFunctionInfo::kNativeBitWithinByte); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 616 | __ j(not_equal, &shift_arguments); |
| 617 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 618 | // Compute the receiver in non-strict mode. |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 619 | __ mov(ebx, Operand(esp, eax, times_4, 0)); // First argument. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 620 | |
| 621 | // Call ToObject on the receiver if it is not an object, or use the |
| 622 | // global object if it is null or undefined. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame^] | 623 | __ JumpIfSmi(ebx, &convert_to_object); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 624 | __ cmp(ebx, factory->null_value()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 625 | __ j(equal, &use_global_receiver); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 626 | __ cmp(ebx, factory->undefined_value()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 627 | __ j(equal, &use_global_receiver); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame^] | 628 | STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
| 629 | __ CmpObjectType(ebx, FIRST_SPEC_OBJECT_TYPE, ecx); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 630 | __ j(above_equal, &shift_arguments); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 631 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 632 | __ bind(&convert_to_object); |
| 633 | __ EnterInternalFrame(); // In order to preserve argument count. |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 634 | __ SmiTag(eax); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 635 | __ push(eax); |
| 636 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 637 | __ push(ebx); |
| 638 | __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); |
| 639 | __ mov(ebx, eax); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 640 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 641 | __ pop(eax); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 642 | __ SmiUntag(eax); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 643 | __ LeaveInternalFrame(); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 644 | // Restore the function to edi. |
| 645 | __ mov(edi, Operand(esp, eax, times_4, 1 * kPointerSize)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 646 | __ jmp(&patch_receiver); |
| 647 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 648 | // Use the global receiver object from the called function as the |
| 649 | // receiver. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 650 | __ bind(&use_global_receiver); |
| 651 | const int kGlobalIndex = |
| 652 | Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; |
| 653 | __ mov(ebx, FieldOperand(esi, kGlobalIndex)); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 654 | __ mov(ebx, FieldOperand(ebx, GlobalObject::kGlobalContextOffset)); |
| 655 | __ mov(ebx, FieldOperand(ebx, kGlobalIndex)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 656 | __ mov(ebx, FieldOperand(ebx, GlobalObject::kGlobalReceiverOffset)); |
| 657 | |
| 658 | __ bind(&patch_receiver); |
| 659 | __ mov(Operand(esp, eax, times_4, 0), ebx); |
| 660 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 661 | __ jmp(&shift_arguments); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 662 | } |
| 663 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 664 | // 3b. Patch the first argument when calling a non-function. The |
| 665 | // CALL_NON_FUNCTION builtin expects the non-function callee as |
| 666 | // receiver, so overwrite the first argument which will ultimately |
| 667 | // become the receiver. |
| 668 | __ bind(&non_function); |
| 669 | __ mov(Operand(esp, eax, times_4, 0), edi); |
| 670 | // Clear edi to indicate a non-function being called. |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 671 | __ Set(edi, Immediate(0)); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 672 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 673 | // 4. Shift arguments and return address one slot down on the stack |
| 674 | // (overwriting the original receiver). Adjust argument count to make |
| 675 | // the original first argument the new receiver. |
| 676 | __ bind(&shift_arguments); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 677 | { Label loop; |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 678 | __ mov(ecx, eax); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 679 | __ bind(&loop); |
| 680 | __ mov(ebx, Operand(esp, ecx, times_4, 0)); |
| 681 | __ mov(Operand(esp, ecx, times_4, kPointerSize), ebx); |
| 682 | __ dec(ecx); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 683 | __ j(not_sign, &loop); // While non-negative (to copy return address). |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 684 | __ pop(ebx); // Discard copy of return address. |
| 685 | __ dec(eax); // One fewer argument (first argument is new receiver). |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 686 | } |
| 687 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 688 | // 5a. Call non-function via tail call to CALL_NON_FUNCTION builtin. |
| 689 | { Label function; |
| 690 | __ test(edi, Operand(edi)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 691 | __ j(not_zero, &function); |
Steve Block | 9fac840 | 2011-05-12 15:51:54 +0100 | [diff] [blame] | 692 | __ Set(ebx, Immediate(0)); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 693 | __ GetBuiltinEntry(edx, Builtins::CALL_NON_FUNCTION); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 694 | __ SetCallKind(ecx, CALL_AS_METHOD); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 695 | __ jmp(masm->isolate()->builtins()->ArgumentsAdaptorTrampoline(), |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 696 | RelocInfo::CODE_TARGET); |
| 697 | __ bind(&function); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 698 | } |
| 699 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 700 | // 5b. Get the code to call from the function and check that the number of |
| 701 | // expected arguments matches what we're providing. If so, jump |
| 702 | // (tail-call) to the code in register edx without checking arguments. |
| 703 | __ mov(edx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); |
| 704 | __ mov(ebx, |
| 705 | FieldOperand(edx, SharedFunctionInfo::kFormalParameterCountOffset)); |
Steve Block | 791712a | 2010-08-27 10:21:07 +0100 | [diff] [blame] | 706 | __ mov(edx, FieldOperand(edi, JSFunction::kCodeEntryOffset)); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 707 | __ SmiUntag(ebx); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 708 | __ SetCallKind(ecx, CALL_AS_METHOD); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 709 | __ cmp(eax, Operand(ebx)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 710 | __ j(not_equal, |
| 711 | masm->isolate()->builtins()->ArgumentsAdaptorTrampoline()); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 712 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 713 | ParameterCount expected(0); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 714 | __ InvokeCode(Operand(edx), expected, expected, JUMP_FUNCTION, |
| 715 | NullCallWrapper(), CALL_AS_METHOD); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 716 | } |
| 717 | |
| 718 | |
| 719 | void Builtins::Generate_FunctionApply(MacroAssembler* masm) { |
| 720 | __ EnterInternalFrame(); |
| 721 | |
| 722 | __ push(Operand(ebp, 4 * kPointerSize)); // push this |
| 723 | __ push(Operand(ebp, 2 * kPointerSize)); // push arguments |
| 724 | __ InvokeBuiltin(Builtins::APPLY_PREPARE, CALL_FUNCTION); |
| 725 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 726 | // Check the stack for overflow. We are not trying need to catch |
| 727 | // interruptions (e.g. debug break and preemption) here, so the "real stack |
| 728 | // limit" is checked. |
| 729 | Label okay; |
| 730 | ExternalReference real_stack_limit = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 731 | ExternalReference::address_of_real_stack_limit(masm->isolate()); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 732 | __ mov(edi, Operand::StaticVariable(real_stack_limit)); |
| 733 | // Make ecx the space we have left. The stack might already be overflowed |
| 734 | // here which will cause ecx to become negative. |
| 735 | __ mov(ecx, Operand(esp)); |
| 736 | __ sub(ecx, Operand(edi)); |
| 737 | // Make edx the space we need for the array when it is unrolled onto the |
| 738 | // stack. |
| 739 | __ mov(edx, Operand(eax)); |
| 740 | __ shl(edx, kPointerSizeLog2 - kSmiTagSize); |
| 741 | // Check if the arguments will overflow the stack. |
| 742 | __ cmp(ecx, Operand(edx)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 743 | __ j(greater, &okay); // Signed comparison. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 744 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 745 | // Out of stack space. |
| 746 | __ push(Operand(ebp, 4 * kPointerSize)); // push this |
| 747 | __ push(eax); |
| 748 | __ InvokeBuiltin(Builtins::APPLY_OVERFLOW, CALL_FUNCTION); |
| 749 | __ bind(&okay); |
| 750 | // End of stack check. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 751 | |
| 752 | // Push current index and limit. |
| 753 | const int kLimitOffset = |
| 754 | StandardFrameConstants::kExpressionsOffset - 1 * kPointerSize; |
| 755 | const int kIndexOffset = kLimitOffset - 1 * kPointerSize; |
| 756 | __ push(eax); // limit |
| 757 | __ push(Immediate(0)); // index |
| 758 | |
| 759 | // Change context eagerly to get the right global object if |
| 760 | // necessary. |
| 761 | __ mov(edi, Operand(ebp, 4 * kPointerSize)); |
| 762 | __ mov(esi, FieldOperand(edi, JSFunction::kContextOffset)); |
| 763 | |
| 764 | // Compute the receiver. |
| 765 | Label call_to_object, use_global_receiver, push_receiver; |
| 766 | __ mov(ebx, Operand(ebp, 3 * kPointerSize)); |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 767 | |
| 768 | // Do not transform the receiver for strict mode functions. |
| 769 | __ mov(ecx, FieldOperand(edi, JSFunction::kSharedFunctionInfoOffset)); |
| 770 | __ test_b(FieldOperand(ecx, SharedFunctionInfo::kStrictModeByteOffset), |
| 771 | 1 << SharedFunctionInfo::kStrictModeBitWithinByte); |
| 772 | __ j(not_equal, &push_receiver); |
| 773 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 774 | Factory* factory = masm->isolate()->factory(); |
| 775 | |
| 776 | // Do not transform the receiver for natives (shared already in ecx). |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame^] | 777 | __ test_b(FieldOperand(ecx, SharedFunctionInfo::kNativeByteOffset), |
| 778 | 1 << SharedFunctionInfo::kNativeBitWithinByte); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 779 | __ j(not_equal, &push_receiver); |
| 780 | |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 781 | // Compute the receiver in non-strict mode. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 782 | // Call ToObject on the receiver if it is not an object, or use the |
| 783 | // global object if it is null or undefined. |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame^] | 784 | __ JumpIfSmi(ebx, &call_to_object); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 785 | __ cmp(ebx, factory->null_value()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 786 | __ j(equal, &use_global_receiver); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 787 | __ cmp(ebx, factory->undefined_value()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 788 | __ j(equal, &use_global_receiver); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame^] | 789 | STATIC_ASSERT(LAST_SPEC_OBJECT_TYPE == LAST_TYPE); |
| 790 | __ CmpObjectType(ebx, FIRST_SPEC_OBJECT_TYPE, ecx); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 791 | __ j(above_equal, &push_receiver); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 792 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 793 | __ bind(&call_to_object); |
| 794 | __ push(ebx); |
| 795 | __ InvokeBuiltin(Builtins::TO_OBJECT, CALL_FUNCTION); |
| 796 | __ mov(ebx, Operand(eax)); |
| 797 | __ jmp(&push_receiver); |
| 798 | |
| 799 | // Use the current global receiver object as the receiver. |
| 800 | __ bind(&use_global_receiver); |
| 801 | const int kGlobalOffset = |
| 802 | Context::kHeaderSize + Context::GLOBAL_INDEX * kPointerSize; |
| 803 | __ mov(ebx, FieldOperand(esi, kGlobalOffset)); |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 804 | __ mov(ebx, FieldOperand(ebx, GlobalObject::kGlobalContextOffset)); |
| 805 | __ mov(ebx, FieldOperand(ebx, kGlobalOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 806 | __ mov(ebx, FieldOperand(ebx, GlobalObject::kGlobalReceiverOffset)); |
| 807 | |
| 808 | // Push the receiver. |
| 809 | __ bind(&push_receiver); |
| 810 | __ push(ebx); |
| 811 | |
| 812 | // Copy all arguments from the array to the stack. |
| 813 | Label entry, loop; |
| 814 | __ mov(eax, Operand(ebp, kIndexOffset)); |
| 815 | __ jmp(&entry); |
| 816 | __ bind(&loop); |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 817 | __ mov(edx, Operand(ebp, 2 * kPointerSize)); // load arguments |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 818 | |
| 819 | // Use inline caching to speed up access to arguments. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 820 | Handle<Code> ic = masm->isolate()->builtins()->KeyedLoadIC_Initialize(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 821 | __ call(ic, RelocInfo::CODE_TARGET); |
| 822 | // It is important that we do not have a test instruction after the |
| 823 | // call. A test instruction after the call is used to indicate that |
| 824 | // we have generated an inline version of the keyed load. In this |
| 825 | // case, we know that we are not generating a test instruction next. |
| 826 | |
Andrei Popescu | 402d937 | 2010-02-26 13:31:12 +0000 | [diff] [blame] | 827 | // Push the nth argument. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 828 | __ push(eax); |
| 829 | |
| 830 | // Update the index on the stack and in register eax. |
| 831 | __ mov(eax, Operand(ebp, kIndexOffset)); |
| 832 | __ add(Operand(eax), Immediate(1 << kSmiTagSize)); |
| 833 | __ mov(Operand(ebp, kIndexOffset), eax); |
| 834 | |
| 835 | __ bind(&entry); |
| 836 | __ cmp(eax, Operand(ebp, kLimitOffset)); |
| 837 | __ j(not_equal, &loop); |
| 838 | |
| 839 | // Invoke the function. |
| 840 | ParameterCount actual(eax); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 841 | __ SmiUntag(eax); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 842 | __ mov(edi, Operand(ebp, 4 * kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 843 | __ InvokeFunction(edi, actual, CALL_FUNCTION, |
| 844 | NullCallWrapper(), CALL_AS_METHOD); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 845 | |
| 846 | __ LeaveInternalFrame(); |
| 847 | __ ret(3 * kPointerSize); // remove this, receiver, and arguments |
| 848 | } |
| 849 | |
| 850 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 851 | // Number of empty elements to allocate for an empty array. |
| 852 | static const int kPreallocatedArrayElements = 4; |
| 853 | |
| 854 | |
| 855 | // Allocate an empty JSArray. The allocated array is put into the result |
| 856 | // register. If the parameter initial_capacity is larger than zero an elements |
| 857 | // backing store is allocated with this size and filled with the hole values. |
| 858 | // Otherwise the elements backing store is set to the empty FixedArray. |
| 859 | static void AllocateEmptyJSArray(MacroAssembler* masm, |
| 860 | Register array_function, |
| 861 | Register result, |
| 862 | Register scratch1, |
| 863 | Register scratch2, |
| 864 | Register scratch3, |
| 865 | int initial_capacity, |
| 866 | Label* gc_required) { |
| 867 | ASSERT(initial_capacity >= 0); |
| 868 | |
| 869 | // Load the initial map from the array function. |
| 870 | __ mov(scratch1, FieldOperand(array_function, |
| 871 | JSFunction::kPrototypeOrInitialMapOffset)); |
| 872 | |
| 873 | // Allocate the JSArray object together with space for a fixed array with the |
| 874 | // requested elements. |
| 875 | int size = JSArray::kSize; |
| 876 | if (initial_capacity > 0) { |
| 877 | size += FixedArray::SizeFor(initial_capacity); |
| 878 | } |
| 879 | __ AllocateInNewSpace(size, |
| 880 | result, |
| 881 | scratch2, |
| 882 | scratch3, |
| 883 | gc_required, |
| 884 | TAG_OBJECT); |
| 885 | |
| 886 | // Allocated the JSArray. Now initialize the fields except for the elements |
| 887 | // array. |
| 888 | // result: JSObject |
| 889 | // scratch1: initial map |
| 890 | // scratch2: start of next object |
| 891 | __ mov(FieldOperand(result, JSObject::kMapOffset), scratch1); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 892 | Factory* factory = masm->isolate()->factory(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 893 | __ mov(FieldOperand(result, JSArray::kPropertiesOffset), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 894 | factory->empty_fixed_array()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 895 | // Field JSArray::kElementsOffset is initialized later. |
| 896 | __ mov(FieldOperand(result, JSArray::kLengthOffset), Immediate(0)); |
| 897 | |
| 898 | // If no storage is requested for the elements array just set the empty |
| 899 | // fixed array. |
| 900 | if (initial_capacity == 0) { |
| 901 | __ mov(FieldOperand(result, JSArray::kElementsOffset), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 902 | factory->empty_fixed_array()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 903 | return; |
| 904 | } |
| 905 | |
| 906 | // Calculate the location of the elements array and set elements array member |
| 907 | // of the JSArray. |
| 908 | // result: JSObject |
| 909 | // scratch2: start of next object |
| 910 | __ lea(scratch1, Operand(result, JSArray::kSize)); |
| 911 | __ mov(FieldOperand(result, JSArray::kElementsOffset), scratch1); |
| 912 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 913 | // Initialize the FixedArray and fill it with holes. FixedArray length is |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 914 | // stored as a smi. |
| 915 | // result: JSObject |
| 916 | // scratch1: elements array |
| 917 | // scratch2: start of next object |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 918 | __ mov(FieldOperand(scratch1, FixedArray::kMapOffset), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 919 | factory->fixed_array_map()); |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 920 | __ mov(FieldOperand(scratch1, FixedArray::kLengthOffset), |
| 921 | Immediate(Smi::FromInt(initial_capacity))); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 922 | |
| 923 | // Fill the FixedArray with the hole value. Inline the code if short. |
| 924 | // Reconsider loop unfolding if kPreallocatedArrayElements gets changed. |
| 925 | static const int kLoopUnfoldLimit = 4; |
| 926 | ASSERT(kPreallocatedArrayElements <= kLoopUnfoldLimit); |
| 927 | if (initial_capacity <= kLoopUnfoldLimit) { |
| 928 | // Use a scratch register here to have only one reloc info when unfolding |
| 929 | // the loop. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 930 | __ mov(scratch3, factory->the_hole_value()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 931 | for (int i = 0; i < initial_capacity; i++) { |
| 932 | __ mov(FieldOperand(scratch1, |
| 933 | FixedArray::kHeaderSize + i * kPointerSize), |
| 934 | scratch3); |
| 935 | } |
| 936 | } else { |
| 937 | Label loop, entry; |
| 938 | __ jmp(&entry); |
| 939 | __ bind(&loop); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 940 | __ mov(Operand(scratch1, 0), factory->the_hole_value()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 941 | __ add(Operand(scratch1), Immediate(kPointerSize)); |
| 942 | __ bind(&entry); |
| 943 | __ cmp(scratch1, Operand(scratch2)); |
| 944 | __ j(below, &loop); |
| 945 | } |
| 946 | } |
| 947 | |
| 948 | |
| 949 | // Allocate a JSArray with the number of elements stored in a register. The |
| 950 | // register array_function holds the built-in Array function and the register |
| 951 | // array_size holds the size of the array as a smi. The allocated array is put |
| 952 | // into the result register and beginning and end of the FixedArray elements |
| 953 | // storage is put into registers elements_array and elements_array_end (see |
| 954 | // below for when that is not the case). If the parameter fill_with_holes is |
| 955 | // true the allocated elements backing store is filled with the hole values |
| 956 | // otherwise it is left uninitialized. When the backing store is filled the |
| 957 | // register elements_array is scratched. |
| 958 | static void AllocateJSArray(MacroAssembler* masm, |
| 959 | Register array_function, // Array function. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 960 | Register array_size, // As a smi, cannot be 0. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 961 | Register result, |
| 962 | Register elements_array, |
| 963 | Register elements_array_end, |
| 964 | Register scratch, |
| 965 | bool fill_with_hole, |
| 966 | Label* gc_required) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 967 | ASSERT(scratch.is(edi)); // rep stos destination |
| 968 | ASSERT(!fill_with_hole || array_size.is(ecx)); // rep stos count |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 969 | ASSERT(!fill_with_hole || !result.is(eax)); // result is never eax |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 970 | |
| 971 | // Load the initial map from the array function. |
| 972 | __ mov(elements_array, |
| 973 | FieldOperand(array_function, |
| 974 | JSFunction::kPrototypeOrInitialMapOffset)); |
| 975 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 976 | // Allocate the JSArray object together with space for a FixedArray with the |
| 977 | // requested elements. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 978 | ASSERT(kSmiTagSize == 1 && kSmiTag == 0); |
| 979 | __ AllocateInNewSpace(JSArray::kSize + FixedArray::kHeaderSize, |
| 980 | times_half_pointer_size, // array_size is a smi. |
| 981 | array_size, |
| 982 | result, |
| 983 | elements_array_end, |
| 984 | scratch, |
| 985 | gc_required, |
| 986 | TAG_OBJECT); |
| 987 | |
| 988 | // Allocated the JSArray. Now initialize the fields except for the elements |
| 989 | // array. |
| 990 | // result: JSObject |
| 991 | // elements_array: initial map |
| 992 | // elements_array_end: start of next object |
| 993 | // array_size: size of array (smi) |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 994 | __ mov(FieldOperand(result, JSObject::kMapOffset), elements_array); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 995 | Factory* factory = masm->isolate()->factory(); |
| 996 | __ mov(elements_array, factory->empty_fixed_array()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 997 | __ mov(FieldOperand(result, JSArray::kPropertiesOffset), elements_array); |
| 998 | // Field JSArray::kElementsOffset is initialized later. |
| 999 | __ mov(FieldOperand(result, JSArray::kLengthOffset), array_size); |
| 1000 | |
| 1001 | // Calculate the location of the elements array and set elements array member |
| 1002 | // of the JSArray. |
| 1003 | // result: JSObject |
| 1004 | // elements_array_end: start of next object |
| 1005 | // array_size: size of array (smi) |
| 1006 | __ lea(elements_array, Operand(result, JSArray::kSize)); |
| 1007 | __ mov(FieldOperand(result, JSArray::kElementsOffset), elements_array); |
| 1008 | |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1009 | // Initialize the fixed array. FixedArray length is stored as a smi. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1010 | // result: JSObject |
| 1011 | // elements_array: elements array |
| 1012 | // elements_array_end: start of next object |
| 1013 | // array_size: size of array (smi) |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1014 | __ mov(FieldOperand(elements_array, FixedArray::kMapOffset), |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1015 | factory->fixed_array_map()); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1016 | // For non-empty JSArrays the length of the FixedArray and the JSArray is the |
| 1017 | // same. |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1018 | __ mov(FieldOperand(elements_array, FixedArray::kLengthOffset), array_size); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1019 | |
| 1020 | // Fill the allocated FixedArray with the hole value if requested. |
| 1021 | // result: JSObject |
| 1022 | // elements_array: elements array |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1023 | if (fill_with_hole) { |
Ben Murdoch | 7f4d5bd | 2010-06-15 11:15:29 +0100 | [diff] [blame] | 1024 | __ SmiUntag(array_size); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1025 | __ lea(edi, Operand(elements_array, |
| 1026 | FixedArray::kHeaderSize - kHeapObjectTag)); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1027 | __ mov(eax, factory->the_hole_value()); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1028 | __ cld(); |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1029 | // Do not use rep stos when filling less than kRepStosThreshold |
| 1030 | // words. |
| 1031 | const int kRepStosThreshold = 16; |
| 1032 | Label loop, entry, done; |
| 1033 | __ cmp(ecx, kRepStosThreshold); |
| 1034 | __ j(below, &loop); // Note: ecx > 0. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1035 | __ rep_stos(); |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1036 | __ jmp(&done); |
| 1037 | __ bind(&loop); |
| 1038 | __ stos(); |
| 1039 | __ bind(&entry); |
| 1040 | __ cmp(edi, Operand(elements_array_end)); |
| 1041 | __ j(below, &loop); |
| 1042 | __ bind(&done); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1043 | } |
| 1044 | } |
| 1045 | |
| 1046 | |
| 1047 | // Create a new array for the built-in Array function. This function allocates |
| 1048 | // the JSArray object and the FixedArray elements array and initializes these. |
| 1049 | // If the Array cannot be constructed in native code the runtime is called. This |
| 1050 | // function assumes the following state: |
| 1051 | // edi: constructor (built-in Array function) |
| 1052 | // eax: argc |
| 1053 | // esp[0]: return address |
| 1054 | // esp[4]: last argument |
| 1055 | // This function is used for both construct and normal calls of Array. Whether |
| 1056 | // it is a construct call or not is indicated by the construct_call parameter. |
| 1057 | // The only difference between handling a construct call and a normal call is |
| 1058 | // that for a construct call the constructor function in edi needs to be |
| 1059 | // preserved for entering the generic code. In both cases argc in eax needs to |
| 1060 | // be preserved. |
| 1061 | static void ArrayNativeCode(MacroAssembler* masm, |
| 1062 | bool construct_call, |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame] | 1063 | Label* call_generic_code) { |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1064 | Label argc_one_or_more, argc_two_or_more, prepare_generic_code_call, |
| 1065 | empty_array, not_empty_array; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1066 | |
| 1067 | // Push the constructor and argc. No need to tag argc as a smi, as there will |
| 1068 | // be no garbage collection with this on the stack. |
| 1069 | int push_count = 0; |
| 1070 | if (construct_call) { |
| 1071 | push_count++; |
| 1072 | __ push(edi); |
| 1073 | } |
| 1074 | push_count++; |
| 1075 | __ push(eax); |
| 1076 | |
| 1077 | // Check for array construction with zero arguments. |
| 1078 | __ test(eax, Operand(eax)); |
| 1079 | __ j(not_zero, &argc_one_or_more); |
| 1080 | |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1081 | __ bind(&empty_array); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1082 | // Handle construction of an empty array. |
| 1083 | AllocateEmptyJSArray(masm, |
| 1084 | edi, |
| 1085 | eax, |
| 1086 | ebx, |
| 1087 | ecx, |
| 1088 | edi, |
| 1089 | kPreallocatedArrayElements, |
| 1090 | &prepare_generic_code_call); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1091 | __ IncrementCounter(masm->isolate()->counters()->array_function_native(), 1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1092 | __ pop(ebx); |
| 1093 | if (construct_call) { |
| 1094 | __ pop(edi); |
| 1095 | } |
| 1096 | __ ret(kPointerSize); |
| 1097 | |
| 1098 | // Check for one argument. Bail out if argument is not smi or if it is |
| 1099 | // negative. |
| 1100 | __ bind(&argc_one_or_more); |
| 1101 | __ cmp(eax, 1); |
| 1102 | __ j(not_equal, &argc_two_or_more); |
| 1103 | ASSERT(kSmiTag == 0); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1104 | __ mov(ecx, Operand(esp, (push_count + 1) * kPointerSize)); |
| 1105 | __ test(ecx, Operand(ecx)); |
| 1106 | __ j(not_zero, ¬_empty_array); |
| 1107 | |
| 1108 | // The single argument passed is zero, so we jump to the code above used to |
| 1109 | // handle the case of no arguments passed. To adapt the stack for that we move |
| 1110 | // the return address and the pushed constructor (if pushed) one stack slot up |
| 1111 | // thereby removing the passed argument. Argc is also on the stack - at the |
| 1112 | // bottom - and it needs to be changed from 1 to 0 to have the call into the |
| 1113 | // runtime system work in case a GC is required. |
| 1114 | for (int i = push_count; i > 0; i--) { |
| 1115 | __ mov(eax, Operand(esp, i * kPointerSize)); |
| 1116 | __ mov(Operand(esp, (i + 1) * kPointerSize), eax); |
| 1117 | } |
| 1118 | __ add(Operand(esp), Immediate(2 * kPointerSize)); // Drop two stack slots. |
| 1119 | __ push(Immediate(0)); // Treat this as a call with argc of zero. |
| 1120 | __ jmp(&empty_array); |
| 1121 | |
| 1122 | __ bind(¬_empty_array); |
| 1123 | __ test(ecx, Immediate(kIntptrSignBit | kSmiTagMask)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1124 | __ j(not_zero, &prepare_generic_code_call); |
| 1125 | |
| 1126 | // Handle construction of an empty array of a certain size. Get the size from |
| 1127 | // the stack and bail out if size is to large to actually allocate an elements |
| 1128 | // array. |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1129 | __ cmp(ecx, JSObject::kInitialMaxFastElementArray << kSmiTagSize); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1130 | __ j(greater_equal, &prepare_generic_code_call); |
| 1131 | |
| 1132 | // edx: array_size (smi) |
| 1133 | // edi: constructor |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1134 | // esp[0]: argc (cannot be 0 here) |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1135 | // esp[4]: constructor (only if construct_call) |
| 1136 | // esp[8]: return address |
| 1137 | // esp[C]: argument |
| 1138 | AllocateJSArray(masm, |
| 1139 | edi, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1140 | ecx, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1141 | ebx, |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1142 | eax, |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 1143 | edx, |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1144 | edi, |
| 1145 | true, |
| 1146 | &prepare_generic_code_call); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1147 | Counters* counters = masm->isolate()->counters(); |
| 1148 | __ IncrementCounter(counters->array_function_native(), 1); |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1149 | __ mov(eax, ebx); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1150 | __ pop(ebx); |
| 1151 | if (construct_call) { |
| 1152 | __ pop(edi); |
| 1153 | } |
| 1154 | __ ret(2 * kPointerSize); |
| 1155 | |
| 1156 | // Handle construction of an array from a list of arguments. |
| 1157 | __ bind(&argc_two_or_more); |
| 1158 | ASSERT(kSmiTag == 0); |
Leon Clarke | e46be81 | 2010-01-19 14:06:41 +0000 | [diff] [blame] | 1159 | __ SmiTag(eax); // Convet argc to a smi. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1160 | // eax: array_size (smi) |
| 1161 | // edi: constructor |
| 1162 | // esp[0] : argc |
| 1163 | // esp[4]: constructor (only if construct_call) |
| 1164 | // esp[8] : return address |
| 1165 | // esp[C] : last argument |
| 1166 | AllocateJSArray(masm, |
| 1167 | edi, |
| 1168 | eax, |
| 1169 | ebx, |
| 1170 | ecx, |
| 1171 | edx, |
| 1172 | edi, |
| 1173 | false, |
| 1174 | &prepare_generic_code_call); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1175 | __ IncrementCounter(counters->array_function_native(), 1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1176 | __ mov(eax, ebx); |
| 1177 | __ pop(ebx); |
| 1178 | if (construct_call) { |
| 1179 | __ pop(edi); |
| 1180 | } |
| 1181 | __ push(eax); |
| 1182 | // eax: JSArray |
| 1183 | // ebx: argc |
| 1184 | // edx: elements_array_end (untagged) |
| 1185 | // esp[0]: JSArray |
| 1186 | // esp[4]: return address |
| 1187 | // esp[8]: last argument |
| 1188 | |
| 1189 | // Location of the last argument |
| 1190 | __ lea(edi, Operand(esp, 2 * kPointerSize)); |
| 1191 | |
| 1192 | // Location of the first array element (Parameter fill_with_holes to |
| 1193 | // AllocateJSArrayis false, so the FixedArray is returned in ecx). |
| 1194 | __ lea(edx, Operand(ecx, FixedArray::kHeaderSize - kHeapObjectTag)); |
| 1195 | |
| 1196 | // ebx: argc |
| 1197 | // edx: location of the first array element |
| 1198 | // edi: location of the last argument |
| 1199 | // esp[0]: JSArray |
| 1200 | // esp[4]: return address |
| 1201 | // esp[8]: last argument |
| 1202 | Label loop, entry; |
| 1203 | __ mov(ecx, ebx); |
| 1204 | __ jmp(&entry); |
| 1205 | __ bind(&loop); |
| 1206 | __ mov(eax, Operand(edi, ecx, times_pointer_size, 0)); |
| 1207 | __ mov(Operand(edx, 0), eax); |
| 1208 | __ add(Operand(edx), Immediate(kPointerSize)); |
| 1209 | __ bind(&entry); |
| 1210 | __ dec(ecx); |
| 1211 | __ j(greater_equal, &loop); |
| 1212 | |
| 1213 | // Remove caller arguments from the stack and return. |
| 1214 | // ebx: argc |
| 1215 | // esp[0]: JSArray |
| 1216 | // esp[4]: return address |
| 1217 | // esp[8]: last argument |
| 1218 | __ pop(eax); |
| 1219 | __ pop(ecx); |
| 1220 | __ lea(esp, Operand(esp, ebx, times_pointer_size, 1 * kPointerSize)); |
| 1221 | __ push(ecx); |
| 1222 | __ ret(0); |
| 1223 | |
| 1224 | // Restore argc and constructor before running the generic code. |
| 1225 | __ bind(&prepare_generic_code_call); |
| 1226 | __ pop(eax); |
| 1227 | if (construct_call) { |
| 1228 | __ pop(edi); |
| 1229 | } |
| 1230 | __ jmp(call_generic_code); |
| 1231 | } |
| 1232 | |
| 1233 | |
| 1234 | void Builtins::Generate_ArrayCode(MacroAssembler* masm) { |
| 1235 | // ----------- S t a t e ------------- |
| 1236 | // -- eax : argc |
| 1237 | // -- esp[0] : return address |
| 1238 | // -- esp[4] : last argument |
| 1239 | // ----------------------------------- |
Kristian Monsen | 25f6136 | 2010-05-21 11:50:48 +0100 | [diff] [blame] | 1240 | Label generic_array_code; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1241 | |
| 1242 | // Get the Array function. |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1243 | __ LoadGlobalFunction(Context::ARRAY_FUNCTION_INDEX, edi); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1244 | |
| 1245 | if (FLAG_debug_code) { |
| 1246 | // Initial map for the builtin Array function shoud be a map. |
| 1247 | __ mov(ebx, FieldOperand(edi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 1248 | // Will both indicate a NULL and a Smi. |
| 1249 | __ test(ebx, Immediate(kSmiTagMask)); |
| 1250 | __ Assert(not_zero, "Unexpected initial map for Array function"); |
| 1251 | __ CmpObjectType(ebx, MAP_TYPE, ecx); |
| 1252 | __ Assert(equal, "Unexpected initial map for Array function"); |
| 1253 | } |
| 1254 | |
| 1255 | // Run the native code for the Array function called as a normal function. |
| 1256 | ArrayNativeCode(masm, false, &generic_array_code); |
| 1257 | |
| 1258 | // Jump to the generic array code in case the specialized code cannot handle |
| 1259 | // the construction. |
| 1260 | __ bind(&generic_array_code); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1261 | Handle<Code> array_code = |
| 1262 | masm->isolate()->builtins()->ArrayCodeGeneric(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1263 | __ jmp(array_code, RelocInfo::CODE_TARGET); |
| 1264 | } |
| 1265 | |
| 1266 | |
| 1267 | void Builtins::Generate_ArrayConstructCode(MacroAssembler* masm) { |
| 1268 | // ----------- S t a t e ------------- |
| 1269 | // -- eax : argc |
| 1270 | // -- edi : constructor |
| 1271 | // -- esp[0] : return address |
| 1272 | // -- esp[4] : last argument |
| 1273 | // ----------------------------------- |
| 1274 | Label generic_constructor; |
| 1275 | |
| 1276 | if (FLAG_debug_code) { |
Ben Murdoch | e0cee9b | 2011-05-25 10:26:03 +0100 | [diff] [blame] | 1277 | // The array construct code is only set for the global and natives |
| 1278 | // builtin Array functions which always have maps. |
| 1279 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1280 | // Initial map for the builtin Array function should be a map. |
| 1281 | __ mov(ebx, FieldOperand(edi, JSFunction::kPrototypeOrInitialMapOffset)); |
| 1282 | // Will both indicate a NULL and a Smi. |
| 1283 | __ test(ebx, Immediate(kSmiTagMask)); |
| 1284 | __ Assert(not_zero, "Unexpected initial map for Array function"); |
| 1285 | __ CmpObjectType(ebx, MAP_TYPE, ecx); |
| 1286 | __ Assert(equal, "Unexpected initial map for Array function"); |
| 1287 | } |
| 1288 | |
| 1289 | // Run the native code for the Array function called as constructor. |
| 1290 | ArrayNativeCode(masm, true, &generic_constructor); |
| 1291 | |
| 1292 | // Jump to the generic construct code in case the specialized code cannot |
| 1293 | // handle the construction. |
| 1294 | __ bind(&generic_constructor); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1295 | Handle<Code> generic_construct_stub = |
| 1296 | masm->isolate()->builtins()->JSConstructStubGeneric(); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1297 | __ jmp(generic_construct_stub, RelocInfo::CODE_TARGET); |
| 1298 | } |
| 1299 | |
| 1300 | |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1301 | void Builtins::Generate_StringConstructCode(MacroAssembler* masm) { |
| 1302 | // ----------- S t a t e ------------- |
| 1303 | // -- eax : number of arguments |
| 1304 | // -- edi : constructor function |
| 1305 | // -- esp[0] : return address |
| 1306 | // -- esp[(argc - n) * 4] : arg[n] (zero-based) |
| 1307 | // -- esp[(argc + 1) * 4] : receiver |
| 1308 | // ----------------------------------- |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1309 | Counters* counters = masm->isolate()->counters(); |
| 1310 | __ IncrementCounter(counters->string_ctor_calls(), 1); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1311 | |
| 1312 | if (FLAG_debug_code) { |
| 1313 | __ LoadGlobalFunction(Context::STRING_FUNCTION_INDEX, ecx); |
| 1314 | __ cmp(edi, Operand(ecx)); |
| 1315 | __ Assert(equal, "Unexpected String function"); |
| 1316 | } |
| 1317 | |
| 1318 | // Load the first argument into eax and get rid of the rest |
| 1319 | // (including the receiver). |
| 1320 | Label no_arguments; |
| 1321 | __ test(eax, Operand(eax)); |
| 1322 | __ j(zero, &no_arguments); |
| 1323 | __ mov(ebx, Operand(esp, eax, times_pointer_size, 0)); |
| 1324 | __ pop(ecx); |
| 1325 | __ lea(esp, Operand(esp, eax, times_pointer_size, kPointerSize)); |
| 1326 | __ push(ecx); |
| 1327 | __ mov(eax, ebx); |
| 1328 | |
| 1329 | // Lookup the argument in the number to string cache. |
| 1330 | Label not_cached, argument_is_string; |
| 1331 | NumberToStringStub::GenerateLookupNumberStringCache( |
| 1332 | masm, |
| 1333 | eax, // Input. |
| 1334 | ebx, // Result. |
| 1335 | ecx, // Scratch 1. |
| 1336 | edx, // Scratch 2. |
| 1337 | false, // Input is known to be smi? |
| 1338 | ¬_cached); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1339 | __ IncrementCounter(counters->string_ctor_cached_number(), 1); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1340 | __ bind(&argument_is_string); |
| 1341 | // ----------- S t a t e ------------- |
| 1342 | // -- ebx : argument converted to string |
| 1343 | // -- edi : constructor function |
| 1344 | // -- esp[0] : return address |
| 1345 | // ----------------------------------- |
| 1346 | |
| 1347 | // Allocate a JSValue and put the tagged pointer into eax. |
| 1348 | Label gc_required; |
| 1349 | __ AllocateInNewSpace(JSValue::kSize, |
| 1350 | eax, // Result. |
| 1351 | ecx, // New allocation top (we ignore it). |
| 1352 | no_reg, |
| 1353 | &gc_required, |
| 1354 | TAG_OBJECT); |
| 1355 | |
| 1356 | // Set the map. |
| 1357 | __ LoadGlobalFunctionInitialMap(edi, ecx); |
| 1358 | if (FLAG_debug_code) { |
| 1359 | __ cmpb(FieldOperand(ecx, Map::kInstanceSizeOffset), |
| 1360 | JSValue::kSize >> kPointerSizeLog2); |
| 1361 | __ Assert(equal, "Unexpected string wrapper instance size"); |
| 1362 | __ cmpb(FieldOperand(ecx, Map::kUnusedPropertyFieldsOffset), 0); |
| 1363 | __ Assert(equal, "Unexpected unused properties of string wrapper"); |
| 1364 | } |
| 1365 | __ mov(FieldOperand(eax, HeapObject::kMapOffset), ecx); |
| 1366 | |
| 1367 | // Set properties and elements. |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1368 | Factory* factory = masm->isolate()->factory(); |
| 1369 | __ Set(ecx, Immediate(factory->empty_fixed_array())); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1370 | __ mov(FieldOperand(eax, JSObject::kPropertiesOffset), ecx); |
| 1371 | __ mov(FieldOperand(eax, JSObject::kElementsOffset), ecx); |
| 1372 | |
| 1373 | // Set the value. |
| 1374 | __ mov(FieldOperand(eax, JSValue::kValueOffset), ebx); |
| 1375 | |
| 1376 | // Ensure the object is fully initialized. |
| 1377 | STATIC_ASSERT(JSValue::kSize == 4 * kPointerSize); |
| 1378 | |
| 1379 | // We're done. Return. |
| 1380 | __ ret(0); |
| 1381 | |
| 1382 | // The argument was not found in the number to string cache. Check |
| 1383 | // if it's a string already before calling the conversion builtin. |
| 1384 | Label convert_argument; |
| 1385 | __ bind(¬_cached); |
| 1386 | STATIC_ASSERT(kSmiTag == 0); |
Ben Murdoch | 3fb3ca8 | 2011-12-02 17:19:32 +0000 | [diff] [blame^] | 1387 | __ JumpIfSmi(eax, &convert_argument); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1388 | Condition is_string = masm->IsObjectStringType(eax, ebx, ecx); |
| 1389 | __ j(NegateCondition(is_string), &convert_argument); |
| 1390 | __ mov(ebx, eax); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1391 | __ IncrementCounter(counters->string_ctor_string_value(), 1); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1392 | __ jmp(&argument_is_string); |
| 1393 | |
| 1394 | // Invoke the conversion builtin and put the result into ebx. |
| 1395 | __ bind(&convert_argument); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1396 | __ IncrementCounter(counters->string_ctor_conversions(), 1); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1397 | __ EnterInternalFrame(); |
| 1398 | __ push(edi); // Preserve the function. |
| 1399 | __ push(eax); |
| 1400 | __ InvokeBuiltin(Builtins::TO_STRING, CALL_FUNCTION); |
| 1401 | __ pop(edi); |
| 1402 | __ LeaveInternalFrame(); |
| 1403 | __ mov(ebx, eax); |
| 1404 | __ jmp(&argument_is_string); |
| 1405 | |
| 1406 | // Load the empty string into ebx, remove the receiver from the |
| 1407 | // stack, and jump back to the case where the argument is a string. |
| 1408 | __ bind(&no_arguments); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1409 | __ Set(ebx, Immediate(factory->empty_string())); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1410 | __ pop(ecx); |
| 1411 | __ lea(esp, Operand(esp, kPointerSize)); |
| 1412 | __ push(ecx); |
| 1413 | __ jmp(&argument_is_string); |
| 1414 | |
| 1415 | // At this point the argument is already a string. Call runtime to |
| 1416 | // create a string wrapper. |
| 1417 | __ bind(&gc_required); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1418 | __ IncrementCounter(counters->string_ctor_gc_required(), 1); |
Kristian Monsen | 80d68ea | 2010-09-08 11:05:35 +0100 | [diff] [blame] | 1419 | __ EnterInternalFrame(); |
| 1420 | __ push(ebx); |
| 1421 | __ CallRuntime(Runtime::kNewStringWrapper, 1); |
| 1422 | __ LeaveInternalFrame(); |
| 1423 | __ ret(0); |
| 1424 | } |
| 1425 | |
| 1426 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1427 | static void EnterArgumentsAdaptorFrame(MacroAssembler* masm) { |
| 1428 | __ push(ebp); |
| 1429 | __ mov(ebp, Operand(esp)); |
| 1430 | |
| 1431 | // Store the arguments adaptor context sentinel. |
| 1432 | __ push(Immediate(Smi::FromInt(StackFrame::ARGUMENTS_ADAPTOR))); |
| 1433 | |
| 1434 | // Push the function on the stack. |
| 1435 | __ push(edi); |
| 1436 | |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1437 | // Preserve the number of arguments on the stack. Must preserve eax, |
| 1438 | // ebx and ecx because these registers are used when copying the |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1439 | // arguments and the receiver. |
| 1440 | ASSERT(kSmiTagSize == 1); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1441 | __ lea(edi, Operand(eax, eax, times_1, kSmiTag)); |
| 1442 | __ push(edi); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1443 | } |
| 1444 | |
| 1445 | |
| 1446 | static void LeaveArgumentsAdaptorFrame(MacroAssembler* masm) { |
| 1447 | // Retrieve the number of arguments from the stack. |
| 1448 | __ mov(ebx, Operand(ebp, ArgumentsAdaptorFrameConstants::kLengthOffset)); |
| 1449 | |
| 1450 | // Leave the frame. |
| 1451 | __ leave(); |
| 1452 | |
| 1453 | // Remove caller arguments from the stack. |
| 1454 | ASSERT(kSmiTagSize == 1 && kSmiTag == 0); |
| 1455 | __ pop(ecx); |
| 1456 | __ lea(esp, Operand(esp, ebx, times_2, 1 * kPointerSize)); // 1 ~ receiver |
| 1457 | __ push(ecx); |
| 1458 | } |
| 1459 | |
| 1460 | |
| 1461 | void Builtins::Generate_ArgumentsAdaptorTrampoline(MacroAssembler* masm) { |
| 1462 | // ----------- S t a t e ------------- |
| 1463 | // -- eax : actual number of arguments |
| 1464 | // -- ebx : expected number of arguments |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1465 | // -- ecx : call kind information |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1466 | // -- edx : code entry to call |
| 1467 | // ----------------------------------- |
| 1468 | |
| 1469 | Label invoke, dont_adapt_arguments; |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1470 | __ IncrementCounter(masm->isolate()->counters()->arguments_adaptors(), 1); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1471 | |
| 1472 | Label enough, too_few; |
| 1473 | __ cmp(eax, Operand(ebx)); |
| 1474 | __ j(less, &too_few); |
| 1475 | __ cmp(ebx, SharedFunctionInfo::kDontAdaptArgumentsSentinel); |
| 1476 | __ j(equal, &dont_adapt_arguments); |
| 1477 | |
| 1478 | { // Enough parameters: Actual >= expected. |
| 1479 | __ bind(&enough); |
| 1480 | EnterArgumentsAdaptorFrame(masm); |
| 1481 | |
| 1482 | // Copy receiver and all expected arguments. |
| 1483 | const int offset = StandardFrameConstants::kCallerSPOffset; |
| 1484 | __ lea(eax, Operand(ebp, eax, times_4, offset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1485 | __ mov(edi, -1); // account for receiver |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1486 | |
| 1487 | Label copy; |
| 1488 | __ bind(©); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1489 | __ inc(edi); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1490 | __ push(Operand(eax, 0)); |
| 1491 | __ sub(Operand(eax), Immediate(kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1492 | __ cmp(edi, Operand(ebx)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1493 | __ j(less, ©); |
| 1494 | __ jmp(&invoke); |
| 1495 | } |
| 1496 | |
| 1497 | { // Too few parameters: Actual < expected. |
| 1498 | __ bind(&too_few); |
| 1499 | EnterArgumentsAdaptorFrame(masm); |
| 1500 | |
| 1501 | // Copy receiver and all actual arguments. |
| 1502 | const int offset = StandardFrameConstants::kCallerSPOffset; |
| 1503 | __ lea(edi, Operand(ebp, eax, times_4, offset)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1504 | // ebx = expected - actual. |
| 1505 | __ sub(ebx, Operand(eax)); |
| 1506 | // eax = -actual - 1 |
| 1507 | __ neg(eax); |
| 1508 | __ sub(Operand(eax), Immediate(1)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1509 | |
| 1510 | Label copy; |
| 1511 | __ bind(©); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1512 | __ inc(eax); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1513 | __ push(Operand(edi, 0)); |
| 1514 | __ sub(Operand(edi), Immediate(kPointerSize)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1515 | __ test(eax, Operand(eax)); |
| 1516 | __ j(not_zero, ©); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1517 | |
| 1518 | // Fill remaining expected arguments with undefined values. |
| 1519 | Label fill; |
| 1520 | __ bind(&fill); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1521 | __ inc(eax); |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1522 | __ push(Immediate(masm->isolate()->factory()->undefined_value())); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1523 | __ cmp(eax, Operand(ebx)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1524 | __ j(less, &fill); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1525 | } |
| 1526 | |
| 1527 | // Call the entry point. |
| 1528 | __ bind(&invoke); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1529 | // Restore function pointer. |
| 1530 | __ mov(edi, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1531 | __ call(Operand(edx)); |
| 1532 | |
| 1533 | // Leave frame and return. |
| 1534 | LeaveArgumentsAdaptorFrame(masm); |
| 1535 | __ ret(0); |
| 1536 | |
| 1537 | // ------------------------------------------- |
| 1538 | // Dont adapt arguments. |
| 1539 | // ------------------------------------------- |
| 1540 | __ bind(&dont_adapt_arguments); |
| 1541 | __ jmp(Operand(edx)); |
| 1542 | } |
| 1543 | |
| 1544 | |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1545 | void Builtins::Generate_OnStackReplacement(MacroAssembler* masm) { |
Ben Murdoch | 8b112d2 | 2011-06-08 16:22:53 +0100 | [diff] [blame] | 1546 | CpuFeatures::TryForceFeatureScope scope(SSE2); |
| 1547 | if (!CpuFeatures::IsSupported(SSE2)) { |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1548 | __ Abort("Unreachable code: Cannot optimize without SSE2 support."); |
| 1549 | return; |
| 1550 | } |
| 1551 | |
| 1552 | // Get the loop depth of the stack guard check. This is recorded in |
| 1553 | // a test(eax, depth) instruction right after the call. |
| 1554 | Label stack_check; |
| 1555 | __ mov(ebx, Operand(esp, 0)); // return address |
| 1556 | if (FLAG_debug_code) { |
| 1557 | __ cmpb(Operand(ebx, 0), Assembler::kTestAlByte); |
| 1558 | __ Assert(equal, "test eax instruction not found after loop stack check"); |
| 1559 | } |
| 1560 | __ movzx_b(ebx, Operand(ebx, 1)); // depth |
| 1561 | |
| 1562 | // Get the loop nesting level at which we allow OSR from the |
| 1563 | // unoptimized code and check if we want to do OSR yet. If not we |
| 1564 | // should perform a stack guard check so we can get interrupts while |
| 1565 | // waiting for on-stack replacement. |
| 1566 | __ mov(eax, Operand(ebp, JavaScriptFrameConstants::kFunctionOffset)); |
| 1567 | __ mov(ecx, FieldOperand(eax, JSFunction::kSharedFunctionInfoOffset)); |
| 1568 | __ mov(ecx, FieldOperand(ecx, SharedFunctionInfo::kCodeOffset)); |
| 1569 | __ cmpb(ebx, FieldOperand(ecx, Code::kAllowOSRAtLoopNestingLevelOffset)); |
| 1570 | __ j(greater, &stack_check); |
| 1571 | |
| 1572 | // Pass the function to optimize as the argument to the on-stack |
| 1573 | // replacement runtime function. |
| 1574 | __ EnterInternalFrame(); |
| 1575 | __ push(eax); |
| 1576 | __ CallRuntime(Runtime::kCompileForOnStackReplacement, 1); |
| 1577 | __ LeaveInternalFrame(); |
| 1578 | |
| 1579 | // If the result was -1 it means that we couldn't optimize the |
| 1580 | // function. Just return and continue in the unoptimized version. |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1581 | Label skip; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1582 | __ cmp(Operand(eax), Immediate(Smi::FromInt(-1))); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1583 | __ j(not_equal, &skip, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1584 | __ ret(0); |
| 1585 | |
| 1586 | // If we decide not to perform on-stack replacement we perform a |
| 1587 | // stack guard check to enable interrupts. |
| 1588 | __ bind(&stack_check); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1589 | Label ok; |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1590 | ExternalReference stack_limit = |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1591 | ExternalReference::address_of_stack_limit(masm->isolate()); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1592 | __ cmp(esp, Operand::StaticVariable(stack_limit)); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 1593 | __ j(above_equal, &ok, Label::kNear); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 1594 | StackCheckStub stub; |
| 1595 | __ TailCallStub(&stub); |
| 1596 | __ Abort("Unreachable code: returned from tail call."); |
| 1597 | __ bind(&ok); |
| 1598 | __ ret(0); |
| 1599 | |
| 1600 | __ bind(&skip); |
| 1601 | // Untag the AST id and push it on the stack. |
| 1602 | __ SmiUntag(eax); |
| 1603 | __ push(eax); |
| 1604 | |
| 1605 | // Generate the code for doing the frame-to-frame translation using |
| 1606 | // the deoptimizer infrastructure. |
| 1607 | Deoptimizer::EntryGenerator generator(masm, Deoptimizer::OSR); |
| 1608 | generator.Generate(); |
| 1609 | } |
| 1610 | |
| 1611 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1612 | #undef __ |
Steve Block | 44f0eee | 2011-05-26 01:26:41 +0100 | [diff] [blame] | 1613 | } |
| 1614 | } // namespace v8::internal |
Leon Clarke | f7060e2 | 2010-06-03 12:02:55 +0100 | [diff] [blame] | 1615 | |
| 1616 | #endif // V8_TARGET_ARCH_IA32 |