luau/CodeGen/include/Luau/UnwindBuilderDwarf2.h
Arseny Kapoulkine 3d74a8f4d4
Sync to upstream/release/545 (#674)
- Improve type error messages for argument count mismatch in certain
cases
- Fix type checking variadic returns when the type is incompatible which
type checked in certain cases
- Reduce size of upvalue objects by 8 bytes on 64-bit platforms
- Reduce I$ footprint of interpreter by 1.5KB
- Reduce GC pause during atomic stage for programs with a lot of threads
- Remove support for bytecode v2
2022-09-15 15:38:17 -07:00

40 lines
1,016 B
C++

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