| //===- MCWin64EH.h - Machine Code Win64 EH support --------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // 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" |
| |
| namespace llvm { |
| 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); |
| } |
| }; |
| |
| class UnwindEmitter : public WinEH::UnwindEmitter { |
| public: |
| void Emit(MCStreamer &Streamer) const override; |
| void EmitUnwindInfo(MCStreamer &Streamer, WinEH::FrameInfo *FI) const override; |
| }; |
| |
| class ARM64UnwindEmitter : public WinEH::UnwindEmitter { |
| public: |
| void Emit(MCStreamer &Streamer) const override; |
| void EmitUnwindInfo(MCStreamer &Streamer, |
| WinEH::FrameInfo *FI) const override; |
| }; |
| |
| } |
| } // end namespace llvm |
| |
| #endif |