diff options
Diffstat (limited to 'include/llvm/MC/MCWin64EH.h')
-rw-r--r-- | include/llvm/MC/MCWin64EH.h | 104 |
1 files changed, 37 insertions, 67 deletions
diff --git a/include/llvm/MC/MCWin64EH.h b/include/llvm/MC/MCWin64EH.h index d21e762..0e81a19 100644 --- a/include/llvm/MC/MCWin64EH.h +++ b/include/llvm/MC/MCWin64EH.h @@ -15,79 +15,49 @@ #ifndef LLVM_MC_MCWIN64EH_H #define LLVM_MC_MCWIN64EH_H +#include "llvm/MC/MCWinEH.h" #include "llvm/Support/Win64EH.h" -#include <cassert> #include <vector> namespace llvm { - class StringRef; - class MCStreamer; - class MCSymbol; +class MCStreamer; +class MCSymbol; - class MCWin64EHInstruction { - public: - typedef Win64EH::UnwindOpcodes OpType; - private: - OpType Operation; - MCSymbol *Label; - unsigned Offset; - unsigned Register; - public: - MCWin64EHInstruction(OpType Op, MCSymbol *L, unsigned Reg) - : Operation(Op), Label(L), Offset(0), Register(Reg) { - assert(Op == Win64EH::UOP_PushNonVol); - } - MCWin64EHInstruction(MCSymbol *L, unsigned Size) - : Operation(Size>128 ? Win64EH::UOP_AllocLarge : Win64EH::UOP_AllocSmall), - Label(L), Offset(Size) { } - MCWin64EHInstruction(OpType Op, MCSymbol *L, unsigned Reg, unsigned Off) - : Operation(Op), Label(L), Offset(Off), Register(Reg) { - assert(Op == Win64EH::UOP_SetFPReg || - Op == Win64EH::UOP_SaveNonVol || - Op == Win64EH::UOP_SaveNonVolBig || - Op == Win64EH::UOP_SaveXMM128 || - Op == Win64EH::UOP_SaveXMM128Big); - } - MCWin64EHInstruction(OpType Op, MCSymbol *L, bool Code) - : Operation(Op), Label(L), Offset(Code ? 1 : 0) { - assert(Op == Win64EH::UOP_PushMachFrame); - } - OpType getOperation() const { return Operation; } - MCSymbol *getLabel() const { return Label; } - unsigned getOffset() const { return Offset; } - unsigned getSize() const { return Offset; } - unsigned getRegister() const { return Register; } - bool isPushCodeFrame() const { return Offset == 1; } - }; +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 MCWin64EHUnwindInfo { - MCWin64EHUnwindInfo() - : 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; - MCWin64EHUnwindInfo *ChainedParent; - std::vector<MCWin64EHInstruction> 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, MCWin64EHUnwindInfo *info); - }; +class UnwindEmitter : public WinEH::UnwindEmitter { +public: + void Emit(MCStreamer &Streamer) const override; + void EmitUnwindInfo(MCStreamer &Streamer, WinEH::FrameInfo *FI) const override; +}; +} } // end namespace llvm #endif |