lib/CodeGen/AsmPrinter/WinCFGuard.h

   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