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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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| 106 // o fp: our caller's frame pointer | 106 // o fp: our caller's frame pointer |
| 107 // o sp: stack pointer | 107 // o sp: stack pointer |
| 108 // o ra: return address | 108 // o ra: return address |
| 109 // | 109 // |
| 110 // The function builds a JS frame. Please see JavaScriptFrameConstants in | 110 // The function builds a JS frame. Please see JavaScriptFrameConstants in |
| 111 // frames-mips.h for its layout. | 111 // frames-mips.h for its layout. |
| 112 void FullCodeGenerator::Generate() { | 112 void FullCodeGenerator::Generate() { |
| 113 CompilationInfo* info = info_; | 113 CompilationInfo* info = info_; |
| 114 profiling_counter_ = isolate()->factory()->NewCell( | 114 profiling_counter_ = isolate()->factory()->NewCell( |
| 115 Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate())); | 115 Handle<Smi>(Smi::FromInt(FLAG_interrupt_budget), isolate())); |
| 116 SetFunctionPosition(function()); | 116 SetFunctionPosition(literal()); |
| 117 Comment cmnt(masm_, "[ function compiled by full code generator"); | 117 Comment cmnt(masm_, "[ function compiled by full code generator"); |
| 118 | 118 |
| 119 ProfileEntryHookStub::MaybeCallEntryHook(masm_); | 119 ProfileEntryHookStub::MaybeCallEntryHook(masm_); |
| 120 | 120 |
| 121 #ifdef DEBUG | 121 #ifdef DEBUG |
| 122 if (strlen(FLAG_stop_at) > 0 && | 122 if (strlen(FLAG_stop_at) > 0 && |
| 123 info->literal()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) { | 123 info->literal()->name()->IsUtf8EqualTo(CStrVector(FLAG_stop_at))) { |
| 124 __ stop("stop-at"); | 124 __ stop("stop-at"); |
| 125 } | 125 } |
| 126 #endif | 126 #endif |
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| 330 __ li(a1, Operand(Smi::FromInt(num_parameters))); | 330 __ li(a1, Operand(Smi::FromInt(num_parameters))); |
| 331 __ Push(a3, a2, a1); | 331 __ Push(a3, a2, a1); |
| 332 | 332 |
| 333 // Arguments to ArgumentsAccessStub: | 333 // Arguments to ArgumentsAccessStub: |
| 334 // function, receiver address, parameter count. | 334 // function, receiver address, parameter count. |
| 335 // The stub will rewrite receiever and parameter count if the previous | 335 // The stub will rewrite receiever and parameter count if the previous |
| 336 // stack frame was an arguments adapter frame. | 336 // stack frame was an arguments adapter frame. |
| 337 ArgumentsAccessStub::Type type; | 337 ArgumentsAccessStub::Type type; |
| 338 if (is_strict(language_mode()) || !has_simple_parameters()) { | 338 if (is_strict(language_mode()) || !has_simple_parameters()) { |
| 339 type = ArgumentsAccessStub::NEW_STRICT; | 339 type = ArgumentsAccessStub::NEW_STRICT; |
| 340 } else if (function()->has_duplicate_parameters()) { | 340 } else if (literal()->has_duplicate_parameters()) { |
| 341 type = ArgumentsAccessStub::NEW_SLOPPY_SLOW; | 341 type = ArgumentsAccessStub::NEW_SLOPPY_SLOW; |
| 342 } else { | 342 } else { |
| 343 type = ArgumentsAccessStub::NEW_SLOPPY_FAST; | 343 type = ArgumentsAccessStub::NEW_SLOPPY_FAST; |
| 344 } | 344 } |
| 345 ArgumentsAccessStub stub(isolate(), type); | 345 ArgumentsAccessStub stub(isolate(), type); |
| 346 __ CallStub(&stub); | 346 __ CallStub(&stub); |
| 347 | 347 |
| 348 SetVar(arguments, v0, a1, a2); | 348 SetVar(arguments, v0, a1, a2); |
| 349 } | 349 } |
| 350 | 350 |
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| 376 __ Branch(&ok, hs, sp, Operand(at)); | 376 __ Branch(&ok, hs, sp, Operand(at)); |
| 377 Handle<Code> stack_check = isolate()->builtins()->StackCheck(); | 377 Handle<Code> stack_check = isolate()->builtins()->StackCheck(); |
| 378 PredictableCodeSizeScope predictable(masm_, | 378 PredictableCodeSizeScope predictable(masm_, |
| 379 masm_->CallSize(stack_check, RelocInfo::CODE_TARGET)); | 379 masm_->CallSize(stack_check, RelocInfo::CODE_TARGET)); |
| 380 __ Call(stack_check, RelocInfo::CODE_TARGET); | 380 __ Call(stack_check, RelocInfo::CODE_TARGET); |
| 381 __ bind(&ok); | 381 __ bind(&ok); |
| 382 } | 382 } |
| 383 | 383 |
| 384 { Comment cmnt(masm_, "[ Body"); | 384 { Comment cmnt(masm_, "[ Body"); |
| 385 DCHECK(loop_depth() == 0); | 385 DCHECK(loop_depth() == 0); |
| 386 VisitStatements(function()->body()); | 386 VisitStatements(literal()->body()); |
| 387 DCHECK(loop_depth() == 0); | 387 DCHECK(loop_depth() == 0); |
| 388 } | 388 } |
| 389 } | 389 } |
| 390 | 390 |
| 391 // Always emit a 'return undefined' in case control fell off the end of | 391 // Always emit a 'return undefined' in case control fell off the end of |
| 392 // the body. | 392 // the body. |
| 393 { Comment cmnt(masm_, "[ return <undefined>;"); | 393 { Comment cmnt(masm_, "[ return <undefined>;"); |
| 394 __ LoadRoot(v0, Heap::kUndefinedValueRootIndex); | 394 __ LoadRoot(v0, Heap::kUndefinedValueRootIndex); |
| 395 } | 395 } |
| 396 EmitReturnSequence(); | 396 EmitReturnSequence(); |
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| 488 EmitProfilingCounterReset(); | 488 EmitProfilingCounterReset(); |
| 489 __ bind(&ok); | 489 __ bind(&ok); |
| 490 | 490 |
| 491 // Make sure that the constant pool is not emitted inside of the return | 491 // Make sure that the constant pool is not emitted inside of the return |
| 492 // sequence. | 492 // sequence. |
| 493 { Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); | 493 { Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); |
| 494 // Here we use masm_-> instead of the __ macro to avoid the code coverage | 494 // Here we use masm_-> instead of the __ macro to avoid the code coverage |
| 495 // tool from instrumenting as we rely on the code size here. | 495 // tool from instrumenting as we rely on the code size here. |
| 496 int32_t arg_count = info_->scope()->num_parameters() + 1; | 496 int32_t arg_count = info_->scope()->num_parameters() + 1; |
| 497 int32_t sp_delta = arg_count * kPointerSize; | 497 int32_t sp_delta = arg_count * kPointerSize; |
| 498 SetReturnPosition(function()); | 498 SetReturnPosition(literal()); |
| 499 masm_->mov(sp, fp); | 499 masm_->mov(sp, fp); |
| 500 int no_frame_start = masm_->pc_offset(); | 500 int no_frame_start = masm_->pc_offset(); |
| 501 masm_->MultiPop(static_cast<RegList>(fp.bit() | ra.bit())); | 501 masm_->MultiPop(static_cast<RegList>(fp.bit() | ra.bit())); |
| 502 masm_->Addu(sp, sp, Operand(sp_delta)); | 502 masm_->Addu(sp, sp, Operand(sp_delta)); |
| 503 masm_->Jump(ra); | 503 masm_->Jump(ra); |
| 504 info_->AddNoFrameRange(no_frame_start, masm_->pc_offset()); | 504 info_->AddNoFrameRange(no_frame_start, masm_->pc_offset()); |
| 505 } | 505 } |
| 506 } | 506 } |
| 507 } | 507 } |
| 508 | 508 |
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| 5376 reinterpret_cast<uint32_t>( | 5376 reinterpret_cast<uint32_t>( |
| 5377 isolate->builtins()->OsrAfterStackCheck()->entry())); | 5377 isolate->builtins()->OsrAfterStackCheck()->entry())); |
| 5378 return OSR_AFTER_STACK_CHECK; | 5378 return OSR_AFTER_STACK_CHECK; |
| 5379 } | 5379 } |
| 5380 | 5380 |
| 5381 | 5381 |
| 5382 } // namespace internal | 5382 } // namespace internal |
| 5383 } // namespace v8 | 5383 } // namespace v8 |
| 5384 | 5384 |
| 5385 #endif // V8_TARGET_ARCH_MIPS | 5385 #endif // V8_TARGET_ARCH_MIPS |
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