1//===- MCWin64EH.h - Machine Code Win64 EH support --------------*- C++ -*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// This file contains declarations to support the Win64 Exception Handling
10// scheme in MC.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_MC_MCWIN64EH_H
15#define LLVM_MC_MCWIN64EH_H
16
17#include "llvm/MC/MCWinEH.h"
18#include "llvm/Support/Win64EH.h"
19
20namespace llvm {
21class MCStreamer;
22class MCSymbol;
23
24namespace Win64EH {
25struct Instruction {
26 static WinEH::Instruction PushNonVol(MCSymbol *L, unsigned Reg) {
27 return WinEH::Instruction(Win64EH::UOP_PushNonVol, L, Reg, -1);
28 }
29 static WinEH::Instruction Alloc(MCSymbol *L, unsigned Size) {
30 return WinEH::Instruction(Size > 128 ? UOP_AllocLarge : UOP_AllocSmall, L,
31 -1, Size);
32 }
33 static WinEH::Instruction PushMachFrame(MCSymbol *L, bool Code) {
34 return WinEH::Instruction(UOP_PushMachFrame, L, -1, Code ? 1 : 0);
35 }
36 static WinEH::Instruction SaveNonVol(MCSymbol *L, unsigned Reg,
37 unsigned Offset) {
38 return WinEH::Instruction(Offset > 512 * 1024 - 8 ? UOP_SaveNonVolBig
39 : UOP_SaveNonVol,
40 L, Reg, Offset);
41 }
42 static WinEH::Instruction SaveXMM(MCSymbol *L, unsigned Reg,
43 unsigned Offset) {
44 return WinEH::Instruction(Offset > 512 * 1024 - 8 ? UOP_SaveXMM128Big
45 : UOP_SaveXMM128,
46 L, Reg, Offset);
47 }
48 static WinEH::Instruction SetFPReg(MCSymbol *L, unsigned Reg, unsigned Off) {
49 return WinEH::Instruction(UOP_SetFPReg, L, Reg, Off);
50 }
51};
52
53class UnwindEmitter : public WinEH::UnwindEmitter {
54public:
55 void Emit(MCStreamer &Streamer) const override;
56 void EmitUnwindInfo(MCStreamer &Streamer, WinEH::FrameInfo *FI,
57 bool HandlerData) const override;
58};
59
60class ARMUnwindEmitter : public WinEH::UnwindEmitter {
61public:
62 void Emit(MCStreamer &Streamer) const override;
63 void EmitUnwindInfo(MCStreamer &Streamer, WinEH::FrameInfo *FI,
64 bool HandlerData) const override;
65};
66
67class ARM64UnwindEmitter : public WinEH::UnwindEmitter {
68public:
69 void Emit(MCStreamer &Streamer) const override;
70 void EmitUnwindInfo(MCStreamer &Streamer, WinEH::FrameInfo *FI,
71 bool HandlerData) const override;
72};
73}
74} // end namespace llvm
75
76#endif
77

source code of llvm/include/llvm/MC/MCWin64EH.h