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46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
// This file is part of the Luau programming language and is licensed under MIT License; see LICENSE.txt for details
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#pragma once
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#include "Luau/RegisterX64.h"
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#include "UnwindBuilder.h"
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namespace Luau
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{
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namespace CodeGen
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{
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class UnwindBuilderDwarf2 : public UnwindBuilder
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{
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public:
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void setBeginOffset(size_t beginOffset) override;
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size_t getBeginOffset() const override;
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void start() override;
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void spill(int espOffset, RegisterX64 reg) override;
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void save(RegisterX64 reg) override;
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void allocStack(int size) override;
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void setupFrameReg(RegisterX64 reg, int espOffset) override;
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void finish() override;
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size_t getSize() const override;
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void finalize(char* target, void* funcAddress, size_t funcSize) const override;
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private:
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size_t beginOffset = 0;
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static const unsigned kRawDataLimit = 128;
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uint8_t rawData[kRawDataLimit];
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uint8_t* pos = rawData;
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uint32_t stackOffset = 0;
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// We will remember the FDE location to write some of the fields like entry length, function start and size later
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uint8_t* fdeEntryStart = nullptr;
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};
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} // namespace CodeGen
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} // namespace Luau
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