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 | |
20 | namespace llvm { |
21 | class MCStreamer; |
22 | class MCSymbol; |
23 | |
24 | namespace Win64EH { |
25 | struct 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 | |
53 | class UnwindEmitter : public WinEH::UnwindEmitter { |
54 | public: |
55 | void Emit(MCStreamer &Streamer) const override; |
56 | void EmitUnwindInfo(MCStreamer &Streamer, WinEH::FrameInfo *FI, |
57 | bool HandlerData) const override; |
58 | }; |
59 | |
60 | class ARMUnwindEmitter : public WinEH::UnwindEmitter { |
61 | public: |
62 | void Emit(MCStreamer &Streamer) const override; |
63 | void EmitUnwindInfo(MCStreamer &Streamer, WinEH::FrameInfo *FI, |
64 | bool HandlerData) const override; |
65 | }; |
66 | |
67 | class ARM64UnwindEmitter : public WinEH::UnwindEmitter { |
68 | public: |
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 | |