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