mirror of
https://github.com/luau-lang/luau.git
synced 2024-11-16 06:45:44 +08:00
63 lines
1.9 KiB
C++
63 lines
1.9 KiB
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/RegisterA64.h"
|
|
#include "Luau/RegisterX64.h"
|
|
|
|
#include <initializer_list>
|
|
#include <vector>
|
|
|
|
#include <stddef.h>
|
|
#include <stdint.h>
|
|
|
|
namespace Luau
|
|
{
|
|
namespace CodeGen
|
|
{
|
|
|
|
// This value is used in 'finishFunction' to mark the function that spans to the end of the whole code block
|
|
static uint32_t kFullBlockFunction = ~0u;
|
|
|
|
class UnwindBuilder
|
|
{
|
|
public:
|
|
enum Arch
|
|
{
|
|
X64,
|
|
A64
|
|
};
|
|
|
|
virtual ~UnwindBuilder() = default;
|
|
|
|
virtual void setBeginOffset(size_t beginOffset) = 0;
|
|
virtual size_t getBeginOffset() const = 0;
|
|
|
|
virtual void startInfo(Arch arch) = 0;
|
|
virtual void startFunction() = 0;
|
|
virtual void finishFunction(uint32_t beginOffset, uint32_t endOffset) = 0;
|
|
virtual void finishInfo() = 0;
|
|
|
|
// A64-specific; prologue must look like this:
|
|
// sub sp, sp, stackSize
|
|
// store sequence that saves regs to [sp..sp+regs.size*8) in the order specified in regs; regs should start with x29, x30 (fp, lr)
|
|
// mov x29, sp
|
|
virtual void prologueA64(uint32_t prologueSize, uint32_t stackSize, std::initializer_list<A64::RegisterA64> regs) = 0;
|
|
|
|
// X64-specific; prologue must look like this:
|
|
// optional, indicated by setupFrame:
|
|
// push rbp
|
|
// mov rbp, rsp
|
|
// push reg in the order specified in regs
|
|
// sub rsp, stackSize
|
|
virtual void prologueX64(uint32_t prologueSize, uint32_t stackSize, bool setupFrame, std::initializer_list<X64::RegisterX64> gpr,
|
|
const std::vector<X64::RegisterX64>& simd) = 0;
|
|
|
|
virtual size_t getUnwindInfoSize(size_t blockSize) const = 0;
|
|
|
|
// This will place the unwinding data at the target address and might update values of some fields
|
|
virtual size_t finalize(char* target, size_t offset, void* funcAddress, size_t blockSize) const = 0;
|
|
};
|
|
|
|
} // namespace CodeGen
|
|
} // namespace Luau
|