--- /dev/null
+//===-- lib/CodeGen/AsmPrinter/AsmPrinterHandler.h -------------*- C++ -*--===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains a generic interface for AsmPrinter handlers,
+// like debug and EH info emitters.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef CODEGEN_ASMPRINTER_ASMPRINTERHANDLER_H__
+#define CODEGEN_ASMPRINTER_ASMPRINTERHANDLER_H__
+
+#include "llvm/Support/DataTypes.h"
+
+namespace llvm {
+
+class MachineFunction;
+class MachineInstr;
+class MCSymbol;
+
+/// \brief Collects and handles AsmPrinter objects required to build debug
+/// or EH information.
+class AsmPrinterHandler {
+public:
+ virtual ~AsmPrinterHandler() {}
+
+ /// \brief For symbols that have a size designated (e.g. common symbols),
+ /// this tracks that size.
+ virtual void setSymbolSize(const MCSymbol *Sym, uint64_t Size) = 0;
+
+ /// \brief Emit all sections that should come after the content.
+ virtual void endModule() = 0;
+
+ /// \brief Gather pre-function debug information.
+ /// Every beginFunction(MF) call should be followed by an endFunction(MF) call.
+ virtual void beginFunction(const MachineFunction *MF) = 0;
+
+ /// \brief Gather post-function debug information.
+ /// Please note that some AsmPrinter implementationss may not call
+ /// beginFunction at all.
+ virtual void endFunction(const MachineFunction *MF) = 0;
+
+ /// \brief Process beginning of an instruction.
+ virtual void beginInstruction(const MachineInstr *MI) = 0;
+
+ /// \brief Process end of an instruction.
+ virtual void endInstruction() = 0;
+};
+} // End of namespace llvm
+
+#endif