LLVM  10.0.0svn
MCWin64EH.h
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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  }
37  unsigned Offset) {
38  return WinEH::Instruction(Offset > 512 * 1024 - 8 ? UOP_SaveNonVolBig
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
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 
54 public:
55  void Emit(MCStreamer &Streamer) const override;
56  void EmitUnwindInfo(MCStreamer &Streamer, WinEH::FrameInfo *FI) const override;
57 };
58 
60 public:
61  void Emit(MCStreamer &Streamer) const override;
62  void EmitUnwindInfo(MCStreamer &Streamer,
63  WinEH::FrameInfo *FI) const override;
64 };
65 
66 }
67 } // end namespace llvm
68 
69 #endif
This class represents lattice values for constants.
Definition: AllocatorList.h:23
MCSymbol - Instances of this class represent a symbol name in the MC file, and MCSymbols are created ...
Definition: MCSymbol.h:41
static WinEH::Instruction SaveNonVol(MCSymbol *L, unsigned Reg, unsigned Offset)
Definition: MCWin64EH.h:36
unsigned Reg
static WinEH::Instruction PushNonVol(MCSymbol *L, unsigned Reg)
Definition: MCWin64EH.h:26
Streaming machine code generation interface.
Definition: MCStreamer.h:188
static WinEH::Instruction PushMachFrame(MCSymbol *L, bool Code)
Definition: MCWin64EH.h:33
static WinEH::Instruction SetFPReg(MCSymbol *L, unsigned Reg, unsigned Off)
Definition: MCWin64EH.h:48
static WinEH::Instruction SaveXMM(MCSymbol *L, unsigned Reg, unsigned Offset)
Definition: MCWin64EH.h:42
static WinEH::Instruction Alloc(MCSymbol *L, unsigned Size)
Definition: MCWin64EH.h:29
uint32_t Size
Definition: Profile.cpp:46
static void EmitUnwindInfo(MCStreamer &streamer, WinEH::FrameInfo *info)
Definition: MCWin64EH.cpp:154