1 //===-- lib/CodeGen/AsmPrinter/AsmPrinterHandler.h -------------*- 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 a generic interface for AsmPrinter handlers, 11 // like debug and EH info emitters. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_LIB_CODEGEN_ASMPRINTER_ASMPRINTERHANDLER_H 16 #define LLVM_LIB_CODEGEN_ASMPRINTER_ASMPRINTERHANDLER_H 17 18 #include "llvm/Support/DataTypes.h" 19 20 namespace llvm { 21 22 class MachineBasicBlock; 23 class MachineFunction; 24 class MachineInstr; 25 class MCSymbol; 26 27 /// \brief Collects and handles AsmPrinter objects required to build debug 28 /// or EH information. 29 class AsmPrinterHandler { 30 public: 31 virtual ~AsmPrinterHandler(); 32 33 /// \brief For symbols that have a size designated (e.g. common symbols), 34 /// this tracks that size. 35 virtual void setSymbolSize(const MCSymbol *Sym, uint64_t Size) = 0; 36 37 /// \brief Emit all sections that should come after the content. 38 virtual void endModule() = 0; 39 40 /// \brief Gather pre-function debug information. 41 /// Every beginFunction(MF) call should be followed by an endFunction(MF) 42 /// call. 43 virtual void beginFunction(const MachineFunction *MF) = 0; 44 45 // \brief Emit any of function marker (like .cfi_endproc). This is called 46 // before endFunction and cannot switch sections. 47 virtual void markFunctionEnd(); 48 49 /// \brief Gather post-function debug information. 50 /// Please note that some AsmPrinter implementations may not call 51 /// beginFunction at all. 52 virtual void endFunction(const MachineFunction *MF) = 0; 53 54 /// \brief Emit target-specific EH funclet machinery. 55 virtual void beginFunclet(const MachineBasicBlock &MBB, 56 MCSymbol *Sym = nullptr) {} 57 virtual void endFunclet() {} 58 59 /// \brief Process beginning of an instruction. 60 virtual void beginInstruction(const MachineInstr *MI) = 0; 61 62 /// \brief Process end of an instruction. 63 virtual void endInstruction() = 0; 64 }; 65 } // End of namespace llvm 66 67 #endif 68
