mirror of
https://github.com/darlinghq/darling-JavaScriptCore.git
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136 lines
5.0 KiB
C++
136 lines
5.0 KiB
C++
/*
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* Copyright (C) 2017-2019 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(B3_JIT)
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#if ENABLE(MASM_PROBE)
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#include "AirInst.h"
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#include "AirSpecial.h"
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#include "MacroAssemblerPrinter.h"
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namespace JSC {
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class CCallHelpers;
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namespace Printer {
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typedef Vector<B3::Air::Arg> ArgList;
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// IsSameOrReference::value is true if T is the same type as U or U&. Else, it is false.
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template<typename T, typename U>
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static constexpr auto IsSameOrReferenceHelper(int) -> std::enable_if_t<std::is_same<T, U>::value || std::is_same<T, U&>::value, std::true_type>;
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template<typename T, typename U>
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static constexpr std::false_type IsSameOrReferenceHelper(...);
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template<class T, typename U>
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struct IsSameOrReference : public std::is_same<decltype(IsSameOrReferenceHelper<T, U>(0)), std::true_type> { };
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template<typename T, typename... Arguments, typename = std::enable_if_t<IsSameOrReference<T, B3::Air::Tmp>::value || IsSameOrReference<T, Reg>::value>>
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inline void appendAirArg(B3::Air::Inst& inst, T&& arg)
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{
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inst.args.append(std::forward<T>(arg));
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}
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template<typename T, typename... Arguments, typename = std::enable_if_t<!IsSameOrReference<T, B3::Air::Tmp>::value && !IsSameOrReference<T, Reg>::value>>
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inline void appendAirArg(B3::Air::Inst&, T&&, int = 0) { }
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inline void appendAirArgs(B3::Air::Inst&) { }
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template<typename T, typename... Arguments>
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inline void appendAirArgs(B3::Air::Inst& inst, T&& t, Arguments&&... others)
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{
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appendAirArg(inst, std::forward<T>(t));
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appendAirArgs(inst, std::forward<Arguments>(others)...);
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}
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void printAirArg(PrintStream&, Context&);
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// Printer<Arg&> is only a place-holder which PrintSpecial::generate() will later
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// replace with a Printer for a register, constant, etc. as appropriate.
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template<>
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struct Printer<B3::Air::Tmp> : public PrintRecord {
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Printer(B3::Air::Tmp&)
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: PrintRecord(printAirArg)
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{ }
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};
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template<>
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struct Printer<Reg> : public PrintRecord {
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Printer(Reg&)
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: PrintRecord(printAirArg)
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{ }
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};
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} // namespace Printer
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namespace B3 { namespace Air {
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class PrintSpecial final : public Special {
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public:
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PrintSpecial(Printer::PrintRecordList*);
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~PrintSpecial() final;
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// You cannot use this register to pass arguments. It just so happens that this register is not
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// used for arguments in the C calling convention. By the way, this is the only thing that causes
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// this special to be specific to C calls.
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static constexpr GPRReg scratchRegister = GPRInfo::nonArgGPR0;
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private:
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void forEachArg(Inst&, const ScopedLambda<Inst::EachArgCallback>&) final;
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bool isValid(Inst&) final;
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bool admitsStack(Inst&, unsigned argIndex) final;
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bool admitsExtendedOffsetAddr(Inst&, unsigned) final;
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void reportUsedRegisters(Inst&, const RegisterSet&) final;
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MacroAssembler::Jump generate(Inst&, CCallHelpers&, GenerationContext&) final;
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RegisterSet extraEarlyClobberedRegs(Inst&) final;
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RegisterSet extraClobberedRegs(Inst&) final;
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void dumpImpl(PrintStream&) const final;
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void deepDumpImpl(PrintStream&) const final;
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static constexpr unsigned specialArgOffset = 0;
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static constexpr unsigned numSpecialArgs = 1;
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static constexpr unsigned calleeArgOffset = numSpecialArgs;
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static constexpr unsigned numCalleeArgs = 1;
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static constexpr unsigned returnGPArgOffset = numSpecialArgs + numCalleeArgs;
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static constexpr unsigned numReturnGPArgs = 2;
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static constexpr unsigned returnFPArgOffset = numSpecialArgs + numCalleeArgs + numReturnGPArgs;
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static constexpr unsigned numReturnFPArgs = 1;
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static constexpr unsigned argArgOffset =
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numSpecialArgs + numCalleeArgs + numReturnGPArgs + numReturnFPArgs;
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Printer::PrintRecordList* m_printRecordList;
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};
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} } } // namespace JSC::B3::Air
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#endif // ENABLE(MASM_PROBE)
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#endif // ENABLE(B3_JIT)
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