1 //===-- WinCFGuard.h - Windows Control Flow Guard Handling ----*- C++ -*--===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file contains support for writing windows exception info into asm files. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_LIB_CODEGEN_ASMPRINTER_WINCFGUARD_H 15 #define LLVM_LIB_CODEGEN_ASMPRINTER_WINCFGUARD_H 16 17 #include "AsmPrinterHandler.h" 18 #include "llvm/Support/Compiler.h" 19 20 namespace llvm { 21 22 class LLVM_LIBRARY_VISIBILITY WinCFGuard : public AsmPrinterHandler { 23 /// Target of directive emission. 24 AsmPrinter *Asm; 25 26 public: 27 WinCFGuard(AsmPrinter *A); 28 ~WinCFGuard() override; 29 setSymbolSize(const MCSymbol * Sym,uint64_t Size)30 void setSymbolSize(const MCSymbol *Sym, uint64_t Size) override {} 31 32 /// Emit the Control Flow Guard function ID table 33 void endModule() override; 34 35 /// Gather pre-function debug information. 36 /// Every beginFunction(MF) call should be followed by an endFunction(MF) 37 /// call. beginFunction(const MachineFunction * MF)38 void beginFunction(const MachineFunction *MF) override {} 39 40 /// Gather post-function debug information. 41 /// Please note that some AsmPrinter implementations may not call 42 /// beginFunction at all. endFunction(const MachineFunction * MF)43 void endFunction(const MachineFunction *MF) override {} 44 45 /// Process beginning of an instruction. beginInstruction(const MachineInstr * MI)46 void beginInstruction(const MachineInstr *MI) override {} 47 48 /// Process end of an instruction. endInstruction()49 void endInstruction() override {} 50 }; 51 52 } // namespace llvm 53 54 #endif 55