mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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78 lines
3.0 KiB
C++
78 lines
3.0 KiB
C++
/*
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* Copyright (C) 2015-2017 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#if ENABLE(DFG_JIT)
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#include "DFGOperations.h"
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#include "DFGSlowPathGenerator.h"
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#include "DFGSpeculativeJIT.h"
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#include "DirectArguments.h"
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namespace JSC { namespace DFG {
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// This calls operationCreateDirectArguments but then restores the value of lengthGPR.
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class CallCreateDirectArgumentsSlowPathGenerator final : public JumpingSlowPathGenerator<MacroAssembler::JumpList> {
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public:
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CallCreateDirectArgumentsSlowPathGenerator(
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MacroAssembler::JumpList from, SpeculativeJIT* jit, GPRReg resultGPR, RegisteredStructure structure,
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GPRReg lengthGPR, unsigned minCapacity)
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: JumpingSlowPathGenerator<MacroAssembler::JumpList>(from, jit)
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, m_resultGPR(resultGPR)
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, m_structure(structure)
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, m_lengthGPR(lengthGPR)
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, m_minCapacity(minCapacity)
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{
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jit->silentSpillAllRegistersImpl(false, m_plans, resultGPR);
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}
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private:
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void generateInternal(SpeculativeJIT* jit) final
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{
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linkFrom(jit);
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for (unsigned i = 0; i < m_plans.size(); ++i)
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jit->silentSpill(m_plans[i]);
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jit->callOperation(
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operationCreateDirectArguments, m_resultGPR, &jit->vm(), m_structure, m_lengthGPR, m_minCapacity);
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for (unsigned i = m_plans.size(); i--;)
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jit->silentFill(m_plans[i]);
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jit->m_jit.exceptionCheck();
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jit->m_jit.loadPtr(
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MacroAssembler::Address(m_resultGPR, DirectArguments::offsetOfLength()), m_lengthGPR);
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jumpTo(jit);
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}
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GPRReg m_resultGPR;
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RegisteredStructure m_structure;
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GPRReg m_lengthGPR;
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unsigned m_minCapacity;
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Vector<SilentRegisterSavePlan, 2> m_plans;
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};
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} } // namespace JSC::DFG
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#endif // ENABLE(DFG_JIT)
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