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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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443 // Push the return value on the stack as the parameter. | 443 // Push the return value on the stack as the parameter. |
444 // Runtime::TraceExit returns its parameter in v0. | 444 // Runtime::TraceExit returns its parameter in v0. |
445 __ push(v0); | 445 __ push(v0); |
446 __ CallRuntime(Runtime::kTraceExit); | 446 __ CallRuntime(Runtime::kTraceExit); |
447 } | 447 } |
448 EmitProfilingCounterHandlingForReturnSequence(false); | 448 EmitProfilingCounterHandlingForReturnSequence(false); |
449 | 449 |
450 // Make sure that the constant pool is not emitted inside of the return | 450 // Make sure that the constant pool is not emitted inside of the return |
451 // sequence. | 451 // sequence. |
452 { Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); | 452 { Assembler::BlockTrampolinePoolScope block_trampoline_pool(masm_); |
453 // Here we use masm_-> instead of the __ macro to avoid the code coverage | |
454 // tool from instrumenting as we rely on the code size here. | |
455 int32_t arg_count = info_->scope()->num_parameters() + 1; | 453 int32_t arg_count = info_->scope()->num_parameters() + 1; |
456 int32_t sp_delta = arg_count * kPointerSize; | 454 int32_t sp_delta = arg_count * kPointerSize; |
457 SetReturnPosition(literal()); | 455 SetReturnPosition(literal()); |
458 masm_->mov(sp, fp); | 456 __ mov(sp, fp); |
459 masm_->MultiPop(static_cast<RegList>(fp.bit() | ra.bit())); | 457 __ MultiPop(static_cast<RegList>(fp.bit() | ra.bit())); |
460 masm_->Addu(sp, sp, Operand(sp_delta)); | 458 __ Addu(sp, sp, Operand(sp_delta)); |
461 masm_->Jump(ra); | 459 __ Jump(ra); |
462 } | 460 } |
463 } | 461 } |
464 } | 462 } |
465 | 463 |
466 void FullCodeGenerator::RestoreContext() { | 464 void FullCodeGenerator::RestoreContext() { |
467 __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | 465 __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
468 } | 466 } |
469 | 467 |
470 void FullCodeGenerator::StackValueContext::Plug(Variable* var) const { | 468 void FullCodeGenerator::StackValueContext::Plug(Variable* var) const { |
471 DCHECK(var->IsStackAllocated() || var->IsContextSlot()); | 469 DCHECK(var->IsStackAllocated() || var->IsContextSlot()); |
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3788 reinterpret_cast<uint32_t>( | 3786 reinterpret_cast<uint32_t>( |
3789 isolate->builtins()->OnStackReplacement()->entry())); | 3787 isolate->builtins()->OnStackReplacement()->entry())); |
3790 return ON_STACK_REPLACEMENT; | 3788 return ON_STACK_REPLACEMENT; |
3791 } | 3789 } |
3792 | 3790 |
3793 | 3791 |
3794 } // namespace internal | 3792 } // namespace internal |
3795 } // namespace v8 | 3793 } // namespace v8 |
3796 | 3794 |
3797 #endif // V8_TARGET_ARCH_MIPS | 3795 #endif // V8_TARGET_ARCH_MIPS |
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