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//===-- 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 "DWARFDebugFrame.h"
#include "DWARFDebugLine.h"
#include "DWARFDebugLoc.h"
#include "DWARFDebugRangeList.h"
#include "DWARFTypeUnit.h"
#include "llvm/ADT/MapVector.h"
#include "llvm/ADT/OwningPtr.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/DebugInfo/DIContext.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 {
SmallVector<DWARFCompileUnit *, 1> CUs;
SmallVector<DWARFTypeUnit *, 1> TUs;
OwningPtr<DWARFDebugAbbrev> Abbrev;
OwningPtr<DWARFDebugLoc> Loc;
OwningPtr<DWARFDebugAranges> Aranges;
OwningPtr<DWARFDebugLine> Line;
OwningPtr<DWARFDebugFrame> DebugFrame;
SmallVector<DWARFCompileUnit *, 1> DWOCUs;
OwningPtr<DWARFDebugAbbrev> AbbrevDWO;
DWARFContext(DWARFContext &) LLVM_DELETED_FUNCTION;
DWARFContext &operator=(DWARFContext &) LLVM_DELETED_FUNCTION;
/// Read compile units from the debug_info section and store them in CUs.
void parseCompileUnits();
/// Read type units from the debug_types sections and store them in CUs.
void parseTypeUnits();
/// Read compile units from the debug_info.dwo section and store them in
/// DWOCUs.
void parseDWOCompileUnits();
public:
struct Section {
StringRef Data;
RelocAddrMap Relocs;
};
DWARFContext() : DIContext(CK_DWARF) {}
virtual ~DWARFContext();
static bool classof(const DIContext *DICtx) {
return DICtx->getKind() == CK_DWARF;
}
virtual void dump(raw_ostream &OS, DIDumpType DumpType = DIDT_All);
/// Get the number of compile units in this context.
unsigned getNumCompileUnits() {
if (CUs.empty())
parseCompileUnits();
return CUs.size();
}
/// Get the number of compile units in this context.
unsigned getNumTypeUnits() {
if (TUs.empty())
parseTypeUnits();
return TUs.size();
}
/// Get the number of compile units in the DWO context.
unsigned getNumDWOCompileUnits() {
if (DWOCUs.empty())
parseDWOCompileUnits();
return DWOCUs.size();
}
/// Get the compile unit at the specified index for this compile unit.
DWARFCompileUnit *getCompileUnitAtIndex(unsigned index) {
if (CUs.empty())
parseCompileUnits();
return CUs[index];
}
/// Get the type unit at the specified index for this compile unit.
DWARFTypeUnit *getTypeUnitAtIndex(unsigned index) {
if (TUs.empty())
parseTypeUnits();
return TUs[index];
}
/// Get the compile unit at the specified index for the DWO compile units.
DWARFCompileUnit *getDWOCompileUnitAtIndex(unsigned index) {
if (DWOCUs.empty())
parseDWOCompileUnits();
return DWOCUs[index];
}
/// Get a pointer to the parsed DebugAbbrev object.
const DWARFDebugAbbrev *getDebugAbbrev();
/// Get a pointer to the parsed DebugLoc object.
const DWARFDebugLoc *getDebugLoc();
/// Get a pointer to the parsed dwo abbreviations object.
const DWARFDebugAbbrev *getDebugAbbrevDWO();
/// Get a pointer to the parsed DebugAranges object.
const DWARFDebugAranges *getDebugAranges();
/// Get a pointer to the parsed frame information object.
const DWARFDebugFrame *getDebugFrame();
/// 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,
DILineInfoSpecifier Specifier = DILineInfoSpecifier());
virtual DILineInfoTable getLineInfoForAddressRange(uint64_t Address,
uint64_t Size, DILineInfoSpecifier Specifier = DILineInfoSpecifier());
virtual DIInliningInfo getInliningInfoForAddress(uint64_t Address,
DILineInfoSpecifier Specifier = DILineInfoSpecifier());
virtual bool isLittleEndian() const = 0;
virtual uint8_t getAddressSize() const = 0;
virtual const Section &getInfoSection() = 0;
typedef MapVector<object::SectionRef, Section,
std::map<object::SectionRef, unsigned> > TypeSectionMap;
virtual const TypeSectionMap &getTypesSections() = 0;
virtual StringRef getAbbrevSection() = 0;
virtual const Section &getLocSection() = 0;
virtual StringRef getARangeSection() = 0;
virtual StringRef getDebugFrameSection() = 0;
virtual const Section &getLineSection() = 0;
virtual StringRef getStringSection() = 0;
virtual StringRef getRangeSection() = 0;
virtual StringRef getPubNamesSection() = 0;
virtual StringRef getPubTypesSection() = 0;
virtual StringRef getGnuPubNamesSection() = 0;
virtual StringRef getGnuPubTypesSection() = 0;
// Sections for DWARF5 split dwarf proposal.
virtual const Section &getInfoDWOSection() = 0;
virtual StringRef getAbbrevDWOSection() = 0;
virtual StringRef getStringDWOSection() = 0;
virtual StringRef getStringOffsetDWOSection() = 0;
virtual StringRef getRangeDWOSection() = 0;
virtual StringRef getAddrSection() = 0;
static bool isSupportedVersion(unsigned version) {
return version == 2 || version == 3 || version == 4;
}
private:
/// Return the compile unit that includes an offset (relative to .debug_info).
DWARFCompileUnit *getCompileUnitForOffset(uint32_t Offset);
/// Return the compile unit which contains instruction with provided
/// address.
DWARFCompileUnit *getCompileUnitForAddress(uint64_t Address);
};
/// 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 {
virtual void anchor();
bool IsLittleEndian;
uint8_t AddressSize;
Section InfoSection;
TypeSectionMap TypesSections;
StringRef AbbrevSection;
Section LocSection;
StringRef ARangeSection;
StringRef DebugFrameSection;
Section LineSection;
StringRef StringSection;
StringRef RangeSection;
StringRef PubNamesSection;
StringRef PubTypesSection;
StringRef GnuPubNamesSection;
StringRef GnuPubTypesSection;
// Sections for DWARF5 split dwarf proposal.
Section InfoDWOSection;
StringRef AbbrevDWOSection;
StringRef StringDWOSection;
StringRef StringOffsetDWOSection;
StringRef RangeDWOSection;
StringRef AddrSection;
SmallVector<MemoryBuffer*, 4> UncompressedSections;
public:
DWARFContextInMemory(object::ObjectFile *);
~DWARFContextInMemory();
virtual bool isLittleEndian() const { return IsLittleEndian; }
virtual uint8_t getAddressSize() const { return AddressSize; }
virtual const Section &getInfoSection() { return InfoSection; }
virtual const TypeSectionMap &getTypesSections() { return TypesSections; }
virtual StringRef getAbbrevSection() { return AbbrevSection; }
virtual const Section &getLocSection() { return LocSection; }
virtual StringRef getARangeSection() { return ARangeSection; }
virtual StringRef getDebugFrameSection() { return DebugFrameSection; }
virtual const Section &getLineSection() { return LineSection; }
virtual StringRef getStringSection() { return StringSection; }
virtual StringRef getRangeSection() { return RangeSection; }
virtual StringRef getPubNamesSection() { return PubNamesSection; }
virtual StringRef getPubTypesSection() { return PubTypesSection; }
virtual StringRef getGnuPubNamesSection() { return GnuPubNamesSection; }
virtual StringRef getGnuPubTypesSection() { return GnuPubTypesSection; }
// Sections for DWARF5 split dwarf proposal.
virtual const Section &getInfoDWOSection() { return InfoDWOSection; }
virtual StringRef getAbbrevDWOSection() { return AbbrevDWOSection; }
virtual StringRef getStringDWOSection() { return StringDWOSection; }
virtual StringRef getStringOffsetDWOSection() {
return StringOffsetDWOSection;
}
virtual StringRef getRangeDWOSection() { return RangeDWOSection; }
virtual StringRef getAddrSection() {
return AddrSection;
}
};
}
#endif
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