mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-23 13:02:52 +02:00
b2cdb8f33d
This makes the opcode an opaque value (unsigned int) rather than the enumeration. This permits the use of target specific operands. Split out the generic type into a MCWinEH header and add a supporting MCWin64EH::Instruction to abstract out the selection of the opcode and construction of the actual instruction. llvm-svn: 213221
88 lines
2.9 KiB
C++
88 lines
2.9 KiB
C++
//===- MCWin64EH.h - Machine Code Win64 EH support --------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file contains declarations to support the Win64 Exception Handling
|
|
// scheme in MC.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_MC_MCWIN64EH_H
|
|
#define LLVM_MC_MCWIN64EH_H
|
|
|
|
#include "llvm/MC/MCWinEH.h"
|
|
#include "llvm/Support/Win64EH.h"
|
|
#include <vector>
|
|
|
|
namespace llvm {
|
|
class StringRef;
|
|
class MCStreamer;
|
|
class MCSymbol;
|
|
|
|
namespace Win64EH {
|
|
struct Instruction {
|
|
static WinEH::Instruction PushNonVol(MCSymbol *L, unsigned Reg) {
|
|
return WinEH::Instruction(Win64EH::UOP_PushNonVol, L, Reg, -1);
|
|
}
|
|
static WinEH::Instruction Alloc(MCSymbol *L, unsigned Size) {
|
|
return WinEH::Instruction(Size > 128 ? UOP_AllocLarge : UOP_AllocSmall, L,
|
|
-1, Size);
|
|
}
|
|
static WinEH::Instruction PushMachFrame(MCSymbol *L, bool Code) {
|
|
return WinEH::Instruction(UOP_PushMachFrame, L, -1, Code ? 1 : 0);
|
|
}
|
|
static WinEH::Instruction SaveNonVol(MCSymbol *L, unsigned Reg,
|
|
unsigned Offset) {
|
|
return WinEH::Instruction(Offset > 512 * 1024 - 8 ? UOP_SaveNonVolBig
|
|
: UOP_SaveNonVol,
|
|
L, Reg, Offset);
|
|
}
|
|
static WinEH::Instruction SaveXMM(MCSymbol *L, unsigned Reg,
|
|
unsigned Offset) {
|
|
return WinEH::Instruction(Offset > 512 * 1024 - 8 ? UOP_SaveXMM128Big
|
|
: UOP_SaveXMM128,
|
|
L, Reg, Offset);
|
|
}
|
|
static WinEH::Instruction SetFPReg(MCSymbol *L, unsigned Reg, unsigned Off) {
|
|
return WinEH::Instruction(UOP_SetFPReg, L, Reg, Off);
|
|
}
|
|
};
|
|
}
|
|
|
|
struct MCWinFrameInfo {
|
|
MCWinFrameInfo()
|
|
: Begin(nullptr), End(nullptr),ExceptionHandler(nullptr),
|
|
Function(nullptr), PrologEnd(nullptr), Symbol(nullptr),
|
|
HandlesUnwind(false), HandlesExceptions(false), LastFrameInst(-1),
|
|
ChainedParent(nullptr), Instructions() {}
|
|
MCSymbol *Begin;
|
|
MCSymbol *End;
|
|
const MCSymbol *ExceptionHandler;
|
|
const MCSymbol *Function;
|
|
MCSymbol *PrologEnd;
|
|
MCSymbol *Symbol;
|
|
bool HandlesUnwind;
|
|
bool HandlesExceptions;
|
|
int LastFrameInst;
|
|
MCWinFrameInfo *ChainedParent;
|
|
std::vector<WinEH::Instruction> Instructions;
|
|
};
|
|
|
|
class MCWin64EHUnwindEmitter {
|
|
public:
|
|
static StringRef GetSectionSuffix(const MCSymbol *func);
|
|
//
|
|
// This emits the unwind info sections (.pdata and .xdata in PE/COFF).
|
|
//
|
|
static void Emit(MCStreamer &streamer);
|
|
static void EmitUnwindInfo(MCStreamer &streamer, MCWinFrameInfo *info);
|
|
};
|
|
} // end namespace llvm
|
|
|
|
#endif
|