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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 #include "src/v8.h" | 5 #include "src/v8.h" |
| 6 | 6 |
| 7 #if V8_TARGET_ARCH_MIPS | 7 #if V8_TARGET_ARCH_MIPS |
| 8 | 8 |
| 9 // Note on Mips implementation: | 9 // Note on Mips implementation: |
| 10 // | 10 // |
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| 1959 } | 1959 } |
| 1960 | 1960 |
| 1961 | 1961 |
| 1962 void FullCodeGenerator::VisitYield(Yield* expr) { | 1962 void FullCodeGenerator::VisitYield(Yield* expr) { |
| 1963 Comment cmnt(masm_, "[ Yield"); | 1963 Comment cmnt(masm_, "[ Yield"); |
| 1964 // Evaluate yielded value first; the initial iterator definition depends on | 1964 // Evaluate yielded value first; the initial iterator definition depends on |
| 1965 // this. It stays on the stack while we update the iterator. | 1965 // this. It stays on the stack while we update the iterator. |
| 1966 VisitForStackValue(expr->expression()); | 1966 VisitForStackValue(expr->expression()); |
| 1967 | 1967 |
| 1968 switch (expr->yield_kind()) { | 1968 switch (expr->yield_kind()) { |
| 1969 case Yield::SUSPEND: | 1969 case Yield::kSuspend: |
| 1970 // Pop value from top-of-stack slot; box result into result register. | 1970 // Pop value from top-of-stack slot; box result into result register. |
| 1971 EmitCreateIteratorResult(false); | 1971 EmitCreateIteratorResult(false); |
| 1972 __ push(result_register()); | 1972 __ push(result_register()); |
| 1973 // Fall through. | 1973 // Fall through. |
| 1974 case Yield::INITIAL: { | 1974 case Yield::kInitial: { |
| 1975 Label suspend, continuation, post_runtime, resume; | 1975 Label suspend, continuation, post_runtime, resume; |
| 1976 | 1976 |
| 1977 __ jmp(&suspend); | 1977 __ jmp(&suspend); |
| 1978 | 1978 |
| 1979 __ bind(&continuation); | 1979 __ bind(&continuation); |
| 1980 __ jmp(&resume); | 1980 __ jmp(&resume); |
| 1981 | 1981 |
| 1982 __ bind(&suspend); | 1982 __ bind(&suspend); |
| 1983 VisitForAccumulatorValue(expr->generator_object()); | 1983 VisitForAccumulatorValue(expr->generator_object()); |
| 1984 DCHECK(continuation.pos() > 0 && Smi::IsValid(continuation.pos())); | 1984 DCHECK(continuation.pos() > 0 && Smi::IsValid(continuation.pos())); |
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| 1995 __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | 1995 __ lw(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 1996 __ bind(&post_runtime); | 1996 __ bind(&post_runtime); |
| 1997 __ pop(result_register()); | 1997 __ pop(result_register()); |
| 1998 EmitReturnSequence(); | 1998 EmitReturnSequence(); |
| 1999 | 1999 |
| 2000 __ bind(&resume); | 2000 __ bind(&resume); |
| 2001 context()->Plug(result_register()); | 2001 context()->Plug(result_register()); |
| 2002 break; | 2002 break; |
| 2003 } | 2003 } |
| 2004 | 2004 |
| 2005 case Yield::FINAL: { | 2005 case Yield::kFinal: { |
| 2006 VisitForAccumulatorValue(expr->generator_object()); | 2006 VisitForAccumulatorValue(expr->generator_object()); |
| 2007 __ li(a1, Operand(Smi::FromInt(JSGeneratorObject::kGeneratorClosed))); | 2007 __ li(a1, Operand(Smi::FromInt(JSGeneratorObject::kGeneratorClosed))); |
| 2008 __ sw(a1, FieldMemOperand(result_register(), | 2008 __ sw(a1, FieldMemOperand(result_register(), |
| 2009 JSGeneratorObject::kContinuationOffset)); | 2009 JSGeneratorObject::kContinuationOffset)); |
| 2010 // Pop value from top-of-stack slot, box result into result register. | 2010 // Pop value from top-of-stack slot, box result into result register. |
| 2011 EmitCreateIteratorResult(true); | 2011 EmitCreateIteratorResult(true); |
| 2012 EmitUnwindBeforeReturn(); | 2012 EmitUnwindBeforeReturn(); |
| 2013 EmitReturnSequence(); | 2013 EmitReturnSequence(); |
| 2014 break; | 2014 break; |
| 2015 } | 2015 } |
| 2016 | 2016 |
| 2017 case Yield::DELEGATING: { | 2017 case Yield::kDelegating: { |
| 2018 VisitForStackValue(expr->generator_object()); | 2018 VisitForStackValue(expr->generator_object()); |
| 2019 | 2019 |
| 2020 // Initial stack layout is as follows: | 2020 // Initial stack layout is as follows: |
| 2021 // [sp + 1 * kPointerSize] iter | 2021 // [sp + 1 * kPointerSize] iter |
| 2022 // [sp + 0 * kPointerSize] g | 2022 // [sp + 0 * kPointerSize] g |
| 2023 | 2023 |
| 2024 Label l_catch, l_try, l_suspend, l_continuation, l_resume; | 2024 Label l_catch, l_try, l_suspend, l_continuation, l_resume; |
| 2025 Label l_next, l_call; | 2025 Label l_next, l_call; |
| 2026 Register load_receiver = LoadConvention::ReceiverRegister(); | 2026 Register load_receiver = LoadConvention::ReceiverRegister(); |
| 2027 Register load_name = LoadConvention::NameRegister(); | 2027 Register load_name = LoadConvention::NameRegister(); |
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| 4879 Assembler::target_address_at(pc_immediate_load_address)) == | 4879 Assembler::target_address_at(pc_immediate_load_address)) == |
| 4880 reinterpret_cast<uint32_t>( | 4880 reinterpret_cast<uint32_t>( |
| 4881 isolate->builtins()->OsrAfterStackCheck()->entry())); | 4881 isolate->builtins()->OsrAfterStackCheck()->entry())); |
| 4882 return OSR_AFTER_STACK_CHECK; | 4882 return OSR_AFTER_STACK_CHECK; |
| 4883 } | 4883 } |
| 4884 | 4884 |
| 4885 | 4885 |
| 4886 } } // namespace v8::internal | 4886 } } // namespace v8::internal |
| 4887 | 4887 |
| 4888 #endif // V8_TARGET_ARCH_MIPS | 4888 #endif // V8_TARGET_ARCH_MIPS |
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