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//===-- llvm/CodeGen/DwarfWriter.h - Dwarf Framework ------------*- 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 support for writing Dwarf debug and exception info into
// asm files. For Details on the Dwarf 3 specfication see DWARF Debugging
// Information Format V.3 reference manual http://dwarf.freestandards.org ,
//
// The role of the Dwarf Writer class is to extract information from the
// MachineModuleInfo object, organize it in Dwarf form and then emit it into asm
// the current asm file using data and high level Dwarf directives.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_DWARFWRITER_H
#define LLVM_CODEGEN_DWARFWRITER_H
#include "llvm/Pass.h"
namespace llvm {
class AsmPrinter;
class DwarfDebug;
class DwarfException;
class MachineModuleInfo;
class MachineFunction;
class Module;
class GlobalVariable;
class TargetAsmInfo;
class raw_ostream;
//===----------------------------------------------------------------------===//
// DwarfWriter - Emits Dwarf debug and exception handling directives.
//
class DwarfWriter : public ImmutablePass {
private:
/// DD - Provides the DwarfWriter debug implementation.
///
DwarfDebug *DD;
/// DE - Provides the DwarfWriter exception implementation.
///
DwarfException *DE;
public:
static char ID; // Pass identification, replacement for typeid
DwarfWriter();
virtual ~DwarfWriter();
//===--------------------------------------------------------------------===//
// Main entry points.
//
/// BeginModule - Emit all Dwarf sections that should come prior to the
/// content.
void BeginModule(Module *M, MachineModuleInfo *MMI, raw_ostream &OS,
AsmPrinter *A, const TargetAsmInfo *T);
/// EndModule - Emit all Dwarf sections that should come after the content.
///
void EndModule();
/// BeginFunction - Gather pre-function debug information. Assumes being
/// emitted immediately after the function entry point.
void BeginFunction(MachineFunction *MF);
/// EndFunction - Gather and emit post-function debug information.
///
void EndFunction(MachineFunction *MF);
/// label. Returns a unique label ID used to generate a label and provide
/// correspondence to the source line list.
unsigned RecordSourceLine(unsigned Line, unsigned Col, unsigned Src);
/// RecordSource - Register a source file with debug info. Returns an source
/// ID.
unsigned RecordSource(const std::string &Dir, const std::string &File);
/// RecordRegionStart - Indicate the start of a region.
unsigned RecordRegionStart(GlobalVariable *V);
/// RecordRegionEnd - Indicate the end of a region.
unsigned RecordRegionEnd(GlobalVariable *V);
/// getRecordSourceLineCount - Count source lines.
unsigned getRecordSourceLineCount();
/// RecordVariable - Indicate the declaration of a local variable.
///
void RecordVariable(GlobalVariable *GV, unsigned FrameIndex);
};
} // end llvm namespace
#endif
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