mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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78 lines
2.8 KiB
C++
78 lines
2.8 KiB
C++
/*
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* Copyright (C) 2015-2018 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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#include "config.h"
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#include "FTLLazySlowPath.h"
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#if ENABLE(FTL_JIT)
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#include "FTLSlowPathCall.h"
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#include "LinkBuffer.h"
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namespace JSC { namespace FTL {
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LazySlowPath::~LazySlowPath()
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{
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}
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void LazySlowPath::initialize(
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CodeLocationJump<JSInternalPtrTag> patchableJump, CodeLocationLabel<JSInternalPtrTag> done,
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CodeLocationLabel<ExceptionHandlerPtrTag> exceptionTarget,
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const RegisterSet& usedRegisters, CallSiteIndex callSiteIndex, RefPtr<Generator> generator
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)
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{
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m_patchableJump = patchableJump;
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m_done = done;
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m_exceptionTarget = exceptionTarget;
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m_usedRegisters = usedRegisters;
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m_callSiteIndex = callSiteIndex;
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m_generator = generator;
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}
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void LazySlowPath::generate(CodeBlock* codeBlock)
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{
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RELEASE_ASSERT(!m_stub);
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CCallHelpers jit(codeBlock);
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GenerationParams params;
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CCallHelpers::JumpList exceptionJumps;
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params.exceptionJumps = m_exceptionTarget ? &exceptionJumps : nullptr;
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params.lazySlowPath = this;
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m_generator->run(jit, params);
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LinkBuffer linkBuffer(jit, codeBlock, JITCompilationMustSucceed);
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linkBuffer.link(params.doneJumps, m_done);
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if (m_exceptionTarget)
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linkBuffer.link(exceptionJumps, m_exceptionTarget);
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m_stub = FINALIZE_CODE_FOR(codeBlock, linkBuffer, JITStubRoutinePtrTag, "Lazy slow path call stub");
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MacroAssembler::repatchJump(m_patchableJump, CodeLocationLabel<JITStubRoutinePtrTag>(m_stub.code()));
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}
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} } // namespace JSC::FTL
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#endif // ENABLE(FTL_JIT)
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