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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_MIPS64 | 7 #if V8_TARGET_ARCH_MIPS64 |
| 8 | 8 |
| 9 // Note on Mips implementation: | 9 // Note on Mips implementation: |
| 10 // | 10 // |
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| 1956 } | 1956 } |
| 1957 | 1957 |
| 1958 | 1958 |
| 1959 void FullCodeGenerator::VisitYield(Yield* expr) { | 1959 void FullCodeGenerator::VisitYield(Yield* expr) { |
| 1960 Comment cmnt(masm_, "[ Yield"); | 1960 Comment cmnt(masm_, "[ Yield"); |
| 1961 // Evaluate yielded value first; the initial iterator definition depends on | 1961 // Evaluate yielded value first; the initial iterator definition depends on |
| 1962 // this. It stays on the stack while we update the iterator. | 1962 // this. It stays on the stack while we update the iterator. |
| 1963 VisitForStackValue(expr->expression()); | 1963 VisitForStackValue(expr->expression()); |
| 1964 | 1964 |
| 1965 switch (expr->yield_kind()) { | 1965 switch (expr->yield_kind()) { |
| 1966 case Yield::SUSPEND: | 1966 case Yield::kSuspend: |
| 1967 // Pop value from top-of-stack slot; box result into result register. | 1967 // Pop value from top-of-stack slot; box result into result register. |
| 1968 EmitCreateIteratorResult(false); | 1968 EmitCreateIteratorResult(false); |
| 1969 __ push(result_register()); | 1969 __ push(result_register()); |
| 1970 // Fall through. | 1970 // Fall through. |
| 1971 case Yield::INITIAL: { | 1971 case Yield::kInitial: { |
| 1972 Label suspend, continuation, post_runtime, resume; | 1972 Label suspend, continuation, post_runtime, resume; |
| 1973 | 1973 |
| 1974 __ jmp(&suspend); | 1974 __ jmp(&suspend); |
| 1975 | 1975 |
| 1976 __ bind(&continuation); | 1976 __ bind(&continuation); |
| 1977 __ jmp(&resume); | 1977 __ jmp(&resume); |
| 1978 | 1978 |
| 1979 __ bind(&suspend); | 1979 __ bind(&suspend); |
| 1980 VisitForAccumulatorValue(expr->generator_object()); | 1980 VisitForAccumulatorValue(expr->generator_object()); |
| 1981 DCHECK(continuation.pos() > 0 && Smi::IsValid(continuation.pos())); | 1981 DCHECK(continuation.pos() > 0 && Smi::IsValid(continuation.pos())); |
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| 1992 __ ld(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); | 1992 __ ld(cp, MemOperand(fp, StandardFrameConstants::kContextOffset)); |
| 1993 __ bind(&post_runtime); | 1993 __ bind(&post_runtime); |
| 1994 __ pop(result_register()); | 1994 __ pop(result_register()); |
| 1995 EmitReturnSequence(); | 1995 EmitReturnSequence(); |
| 1996 | 1996 |
| 1997 __ bind(&resume); | 1997 __ bind(&resume); |
| 1998 context()->Plug(result_register()); | 1998 context()->Plug(result_register()); |
| 1999 break; | 1999 break; |
| 2000 } | 2000 } |
| 2001 | 2001 |
| 2002 case Yield::FINAL: { | 2002 case Yield::kFinal: { |
| 2003 VisitForAccumulatorValue(expr->generator_object()); | 2003 VisitForAccumulatorValue(expr->generator_object()); |
| 2004 __ li(a1, Operand(Smi::FromInt(JSGeneratorObject::kGeneratorClosed))); | 2004 __ li(a1, Operand(Smi::FromInt(JSGeneratorObject::kGeneratorClosed))); |
| 2005 __ sd(a1, FieldMemOperand(result_register(), | 2005 __ sd(a1, FieldMemOperand(result_register(), |
| 2006 JSGeneratorObject::kContinuationOffset)); | 2006 JSGeneratorObject::kContinuationOffset)); |
| 2007 // Pop value from top-of-stack slot, box result into result register. | 2007 // Pop value from top-of-stack slot, box result into result register. |
| 2008 EmitCreateIteratorResult(true); | 2008 EmitCreateIteratorResult(true); |
| 2009 EmitUnwindBeforeReturn(); | 2009 EmitUnwindBeforeReturn(); |
| 2010 EmitReturnSequence(); | 2010 EmitReturnSequence(); |
| 2011 break; | 2011 break; |
| 2012 } | 2012 } |
| 2013 | 2013 |
| 2014 case Yield::DELEGATING: { | 2014 case Yield::kDelegating: { |
| 2015 VisitForStackValue(expr->generator_object()); | 2015 VisitForStackValue(expr->generator_object()); |
| 2016 | 2016 |
| 2017 // Initial stack layout is as follows: | 2017 // Initial stack layout is as follows: |
| 2018 // [sp + 1 * kPointerSize] iter | 2018 // [sp + 1 * kPointerSize] iter |
| 2019 // [sp + 0 * kPointerSize] g | 2019 // [sp + 0 * kPointerSize] g |
| 2020 | 2020 |
| 2021 Label l_catch, l_try, l_suspend, l_continuation, l_resume; | 2021 Label l_catch, l_try, l_suspend, l_continuation, l_resume; |
| 2022 Label l_next, l_call; | 2022 Label l_next, l_call; |
| 2023 Register load_receiver = LoadConvention::ReceiverRegister(); | 2023 Register load_receiver = LoadConvention::ReceiverRegister(); |
| 2024 Register load_name = LoadConvention::NameRegister(); | 2024 Register load_name = LoadConvention::NameRegister(); |
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| 4883 Assembler::target_address_at(pc_immediate_load_address)) == | 4883 Assembler::target_address_at(pc_immediate_load_address)) == |
| 4884 reinterpret_cast<uint64_t>( | 4884 reinterpret_cast<uint64_t>( |
| 4885 isolate->builtins()->OsrAfterStackCheck()->entry())); | 4885 isolate->builtins()->OsrAfterStackCheck()->entry())); |
| 4886 return OSR_AFTER_STACK_CHECK; | 4886 return OSR_AFTER_STACK_CHECK; |
| 4887 } | 4887 } |
| 4888 | 4888 |
| 4889 | 4889 |
| 4890 } } // namespace v8::internal | 4890 } } // namespace v8::internal |
| 4891 | 4891 |
| 4892 #endif // V8_TARGET_ARCH_MIPS64 | 4892 #endif // V8_TARGET_ARCH_MIPS64 |
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