1 //===-- WinCFGuard.h - Windows Control Flow Guard Handling ----*- 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 support for writing windows exception info into asm files.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #ifndef LLVM_LIB_CODEGEN_ASMPRINTER_WINCFGUARD_H
14 #define LLVM_LIB_CODEGEN_ASMPRINTER_WINCFGUARD_H
15 
16 #include "llvm/CodeGen/AsmPrinterHandler.h"
17 #include "llvm/Support/Compiler.h"
18 
19 namespace llvm {
20 
21 class LLVM_LIBRARY_VISIBILITY WinCFGuard : public AsmPrinterHandler {
22   /// Target of directive emission.
23   AsmPrinter *Asm;
24 
25 public:
26   WinCFGuard(AsmPrinter *A);
27   ~WinCFGuard() override;
28 
29   void setSymbolSize(const MCSymbol *Sym, uint64_t Size) override {}
30 
31   /// Emit the Control Flow Guard function ID table
32   void endModule() override;
33 
34   /// Gather pre-function debug information.
35   /// Every beginFunction(MF) call should be followed by an endFunction(MF)
36   /// call.
37   void beginFunction(const MachineFunction *MF) override {}
38 
39   /// Gather post-function debug information.
40   /// Please note that some AsmPrinter implementations may not call
41   /// beginFunction at all.
42   void endFunction(const MachineFunction *MF) override {}
43 
44   /// Process beginning of an instruction.
45   void beginInstruction(const MachineInstr *MI) override {}
46 
47   /// Process end of an instruction.
48   void endInstruction() override {}
49 };
50 
51 } // namespace llvm
52 
53 #endif
54