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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #if V8_TARGET_ARCH_MIPS | 5 #if V8_TARGET_ARCH_MIPS |
6 | 6 |
7 // Note on Mips implementation: | 7 // Note on Mips implementation: |
8 // | 8 // |
9 // The result_register() for mips is the 'v0' register, which is defined | 9 // The result_register() for mips is the 'v0' register, which is defined |
10 // by the ABI to contain function return values. However, the first | 10 // by the ABI to contain function return values. However, the first |
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298 | 298 |
299 SetVar(arguments, v0, a1, a2); | 299 SetVar(arguments, v0, a1, a2); |
300 } | 300 } |
301 | 301 |
302 if (FLAG_trace) { | 302 if (FLAG_trace) { |
303 __ CallRuntime(Runtime::kTraceEnter); | 303 __ CallRuntime(Runtime::kTraceEnter); |
304 } | 304 } |
305 | 305 |
306 // Visit the declarations and body unless there is an illegal | 306 // Visit the declarations and body unless there is an illegal |
307 // redeclaration. | 307 // redeclaration. |
308 if (scope()->HasIllegalRedeclaration()) { | 308 PrepareForBailoutForId(BailoutId::FunctionEntry(), NO_REGISTERS); |
309 EmitIllegalRedeclaration(); | 309 { |
310 } else { | 310 Comment cmnt(masm_, "[ Declarations"); |
311 PrepareForBailoutForId(BailoutId::FunctionEntry(), NO_REGISTERS); | 311 VisitDeclarations(scope()->declarations()); |
312 { Comment cmnt(masm_, "[ Declarations"); | 312 } |
313 VisitDeclarations(scope()->declarations()); | |
314 } | |
315 | 313 |
316 // Assert that the declarations do not use ICs. Otherwise the debugger | 314 // Assert that the declarations do not use ICs. Otherwise the debugger |
317 // won't be able to redirect a PC at an IC to the correct IC in newly | 315 // won't be able to redirect a PC at an IC to the correct IC in newly |
318 // recompiled code. | 316 // recompiled code. |
319 DCHECK_EQ(0, ic_total_count_); | 317 DCHECK_EQ(0, ic_total_count_); |
320 | 318 |
321 { Comment cmnt(masm_, "[ Stack check"); | 319 { |
322 PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS); | 320 Comment cmnt(masm_, "[ Stack check"); |
323 Label ok; | 321 PrepareForBailoutForId(BailoutId::Declarations(), NO_REGISTERS); |
324 __ LoadRoot(at, Heap::kStackLimitRootIndex); | 322 Label ok; |
325 __ Branch(&ok, hs, sp, Operand(at)); | 323 __ LoadRoot(at, Heap::kStackLimitRootIndex); |
326 Handle<Code> stack_check = isolate()->builtins()->StackCheck(); | 324 __ Branch(&ok, hs, sp, Operand(at)); |
327 PredictableCodeSizeScope predictable(masm_, | 325 Handle<Code> stack_check = isolate()->builtins()->StackCheck(); |
328 masm_->CallSize(stack_check, RelocInfo::CODE_TARGET)); | 326 PredictableCodeSizeScope predictable( |
329 __ Call(stack_check, RelocInfo::CODE_TARGET); | 327 masm_, masm_->CallSize(stack_check, RelocInfo::CODE_TARGET)); |
330 __ bind(&ok); | 328 __ Call(stack_check, RelocInfo::CODE_TARGET); |
331 } | 329 __ bind(&ok); |
| 330 } |
332 | 331 |
333 { Comment cmnt(masm_, "[ Body"); | 332 { |
334 DCHECK(loop_depth() == 0); | 333 Comment cmnt(masm_, "[ Body"); |
335 VisitStatements(literal()->body()); | 334 DCHECK(loop_depth() == 0); |
336 DCHECK(loop_depth() == 0); | 335 VisitStatements(literal()->body()); |
337 } | 336 DCHECK(loop_depth() == 0); |
338 } | 337 } |
339 | 338 |
340 // Always emit a 'return undefined' in case control fell off the end of | 339 // Always emit a 'return undefined' in case control fell off the end of |
341 // the body. | 340 // the body. |
342 { Comment cmnt(masm_, "[ return <undefined>;"); | 341 { Comment cmnt(masm_, "[ return <undefined>;"); |
343 __ LoadRoot(v0, Heap::kUndefinedValueRootIndex); | 342 __ LoadRoot(v0, Heap::kUndefinedValueRootIndex); |
344 } | 343 } |
345 EmitReturnSequence(); | 344 EmitReturnSequence(); |
346 } | 345 } |
347 | 346 |
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4122 reinterpret_cast<uint32_t>( | 4121 reinterpret_cast<uint32_t>( |
4123 isolate->builtins()->OnStackReplacement()->entry())); | 4122 isolate->builtins()->OnStackReplacement()->entry())); |
4124 return ON_STACK_REPLACEMENT; | 4123 return ON_STACK_REPLACEMENT; |
4125 } | 4124 } |
4126 | 4125 |
4127 | 4126 |
4128 } // namespace internal | 4127 } // namespace internal |
4129 } // namespace v8 | 4128 } // namespace v8 |
4130 | 4129 |
4131 #endif // V8_TARGET_ARCH_MIPS | 4130 #endif // V8_TARGET_ARCH_MIPS |
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