mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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123 lines
4.4 KiB
C++
123 lines
4.4 KiB
C++
/*
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* Copyright (C) 2013-2018 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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#pragma once
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#if ENABLE(FTL_JIT)
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#include "CCallHelpers.h"
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#include "FTLSlowPathCallKey.h"
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#include "FTLState.h"
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namespace JSC { namespace FTL {
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class SlowPathCall {
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public:
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SlowPathCall() { }
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SlowPathCall(MacroAssembler::Call call, const SlowPathCallKey& key)
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: m_call(call)
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, m_key(key)
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{
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}
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MacroAssembler::Call call() const { return m_call; }
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SlowPathCallKey key() const { return m_key; }
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private:
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MacroAssembler::Call m_call;
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SlowPathCallKey m_key;
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};
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// This will be an RAII thingy that will set up the necessary stack sizes and offsets and such.
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class SlowPathCallContext {
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public:
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SlowPathCallContext(RegisterSet usedRegisters, CCallHelpers&, unsigned numArgs, GPRReg returnRegister);
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~SlowPathCallContext();
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// NOTE: The call that this returns is already going to be linked by the JIT using addLinkTask(),
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// so there is no need for you to link it yourself.
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SlowPathCall makeCall(VM&, FunctionPtr<CFunctionPtrTag> callTarget);
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private:
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SlowPathCallKey keyWithTarget(FunctionPtr<CFunctionPtrTag> callTarget) const;
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RegisterSet m_argumentRegisters;
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RegisterSet m_callingConventionRegisters;
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CCallHelpers& m_jit;
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unsigned m_numArgs;
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GPRReg m_returnRegister;
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size_t m_offsetToSavingArea;
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size_t m_stackBytesNeeded;
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RegisterSet m_thunkSaveSet;
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ptrdiff_t m_offset;
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};
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template<typename... ArgumentTypes>
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SlowPathCall callOperation(
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VM& vm, const RegisterSet& usedRegisters, CCallHelpers& jit, CCallHelpers::JumpList* exceptionTarget,
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FunctionPtr<CFunctionPtrTag> function, GPRReg resultGPR, ArgumentTypes... arguments)
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{
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SlowPathCall call;
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{
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SlowPathCallContext context(usedRegisters, jit, sizeof...(ArgumentTypes) + 1, resultGPR);
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jit.setupArguments<void(ExecState*, ArgumentTypes...)>(arguments...);
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call = context.makeCall(vm, function);
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}
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if (exceptionTarget)
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exceptionTarget->append(jit.emitExceptionCheck(vm));
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return call;
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}
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template<typename... ArgumentTypes>
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SlowPathCall callOperation(
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VM& vm, const RegisterSet& usedRegisters, CCallHelpers& jit, CallSiteIndex callSiteIndex,
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CCallHelpers::JumpList* exceptionTarget, FunctionPtr<CFunctionPtrTag> function, GPRReg resultGPR,
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ArgumentTypes... arguments)
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{
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if (callSiteIndex) {
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jit.store32(
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CCallHelpers::TrustedImm32(callSiteIndex.bits()),
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CCallHelpers::tagFor(CallFrameSlot::argumentCount));
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}
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return callOperation(vm, usedRegisters, jit, exceptionTarget, function, resultGPR, arguments...);
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}
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CallSiteIndex callSiteIndexForCodeOrigin(State&, CodeOrigin);
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template<typename... ArgumentTypes>
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SlowPathCall callOperation(
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State& state, const RegisterSet& usedRegisters, CCallHelpers& jit, CodeOrigin codeOrigin,
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CCallHelpers::JumpList* exceptionTarget, FunctionPtr<CFunctionPtrTag> function, GPRReg result, ArgumentTypes... arguments)
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{
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return callOperation(
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state.vm(), usedRegisters, jit, callSiteIndexForCodeOrigin(state, codeOrigin), exceptionTarget, function,
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result, arguments...);
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}
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} } // namespace JSC::FTL
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#endif // ENABLE(FTL_JIT)
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