mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 08:23:21 +01:00
119 lines
3.8 KiB
C++
119 lines
3.8 KiB
C++
//===-- DWARFContext.h ------------------------------------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===/
|
|
|
|
#ifndef LLVM_DEBUGINFO_DWARFCONTEXT_H
|
|
#define LLVM_DEBUGINFO_DWARFCONTEXT_H
|
|
|
|
#include "DWARFCompileUnit.h"
|
|
#include "DWARFDebugAranges.h"
|
|
#include "DWARFDebugLine.h"
|
|
#include "llvm/DebugInfo/DIContext.h"
|
|
#include "llvm/ADT/OwningPtr.h"
|
|
#include "llvm/ADT/SmallVector.h"
|
|
|
|
namespace llvm {
|
|
|
|
/// DWARFContext
|
|
/// This data structure is the top level entity that deals with dwarf debug
|
|
/// information parsing. The actual data is supplied through pure virtual
|
|
/// methods that a concrete implementation provides.
|
|
class DWARFContext : public DIContext {
|
|
bool IsLittleEndian;
|
|
|
|
SmallVector<DWARFCompileUnit, 1> CUs;
|
|
OwningPtr<DWARFDebugAbbrev> Abbrev;
|
|
OwningPtr<DWARFDebugAranges> Aranges;
|
|
OwningPtr<DWARFDebugLine> Line;
|
|
|
|
DWARFContext(DWARFContext &); // = delete
|
|
DWARFContext &operator=(DWARFContext &); // = delete
|
|
|
|
/// Read compile units from the debug_info section and store them in CUs.
|
|
void parseCompileUnits();
|
|
protected:
|
|
DWARFContext(bool isLittleEndian) : IsLittleEndian(isLittleEndian) {}
|
|
public:
|
|
virtual void dump(raw_ostream &OS);
|
|
/// Get the number of compile units in this context.
|
|
unsigned getNumCompileUnits() {
|
|
if (CUs.empty())
|
|
parseCompileUnits();
|
|
return CUs.size();
|
|
}
|
|
/// Get the compile unit at the specified index for this compile unit.
|
|
DWARFCompileUnit *getCompileUnitAtIndex(unsigned index) {
|
|
if (CUs.empty())
|
|
parseCompileUnits();
|
|
return &CUs[index];
|
|
}
|
|
|
|
/// Return the compile unit that includes an offset (relative to .debug_info).
|
|
DWARFCompileUnit *getCompileUnitForOffset(uint32_t offset);
|
|
|
|
/// Get a pointer to the parsed DebugAbbrev object.
|
|
const DWARFDebugAbbrev *getDebugAbbrev();
|
|
|
|
/// Get a pointer to the parsed DebugAranges object.
|
|
const DWARFDebugAranges *getDebugAranges();
|
|
|
|
/// Get a pointer to a parsed line table corresponding to a compile unit.
|
|
const DWARFDebugLine::LineTable *
|
|
getLineTableForCompileUnit(DWARFCompileUnit *cu);
|
|
|
|
virtual DILineInfo getLineInfoForAddress(uint64_t address);
|
|
|
|
bool isLittleEndian() const { return IsLittleEndian; }
|
|
|
|
virtual StringRef getInfoSection() = 0;
|
|
virtual StringRef getAbbrevSection() = 0;
|
|
virtual StringRef getARangeSection() = 0;
|
|
virtual StringRef getLineSection() = 0;
|
|
virtual StringRef getStringSection() = 0;
|
|
|
|
static bool isSupportedVersion(unsigned version) {
|
|
return version == 2 || version == 3;
|
|
}
|
|
};
|
|
|
|
|
|
/// DWARFContextInMemory is the simplest possible implementation of a
|
|
/// DWARFContext. It assumes all content is available in memory and stores
|
|
/// pointers to it.
|
|
class DWARFContextInMemory : public DWARFContext {
|
|
StringRef InfoSection;
|
|
StringRef AbbrevSection;
|
|
StringRef ARangeSection;
|
|
StringRef LineSection;
|
|
StringRef StringSection;
|
|
public:
|
|
DWARFContextInMemory(bool isLittleEndian,
|
|
StringRef infoSection,
|
|
StringRef abbrevSection,
|
|
StringRef aRangeSection,
|
|
StringRef lineSection,
|
|
StringRef stringSection)
|
|
: DWARFContext(isLittleEndian),
|
|
InfoSection(infoSection),
|
|
AbbrevSection(abbrevSection),
|
|
ARangeSection(aRangeSection),
|
|
LineSection(lineSection),
|
|
StringSection(stringSection)
|
|
{}
|
|
|
|
virtual StringRef getInfoSection() { return InfoSection; }
|
|
virtual StringRef getAbbrevSection() { return AbbrevSection; }
|
|
virtual StringRef getARangeSection() { return ARangeSection; }
|
|
virtual StringRef getLineSection() { return LineSection; }
|
|
virtual StringRef getStringSection() { return StringSection; }
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|