#include "DWARFContext.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringSwitch.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/Support/Compression.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/Path.h"
#include <algorithm>
using namespace llvm;
using namespace dwarf;
+using namespace object;
typedef DWARFDebugLine::LineTable DWARFLineTable;
getCompileUnitAtIndex(i)->dump(OS);
}
+ if (DumpType == DIDT_All || DumpType == DIDT_Loc) {
+ OS << ".debug_loc contents:\n";
+ getDebugLoc()->dump(OS);
+ }
+
if (DumpType == DIDT_All || DumpType == DIDT_Frames) {
OS << "\n.debug_frame contents:\n";
getDebugFrame()->dump(OS);
}
if (DumpType == DIDT_All || DumpType == DIDT_AbbrevDwo) {
- OS << "\n.debug_abbrev.dwo contents:\n";
- getDebugAbbrevDWO()->dump(OS);
+ const DWARFDebugAbbrev *D = getDebugAbbrevDWO();
+ if (D) {
+ OS << "\n.debug_abbrev.dwo contents:\n";
+ getDebugAbbrevDWO()->dump(OS);
+ }
}
- if (DumpType == DIDT_All || DumpType == DIDT_InfoDwo) {
- OS << "\n.debug_info.dwo contents:\n";
- for (unsigned i = 0, e = getNumDWOCompileUnits(); i != e; ++i)
- getDWOCompileUnitAtIndex(i)->dump(OS);
- }
+ if (DumpType == DIDT_All || DumpType == DIDT_InfoDwo)
+ if (getNumDWOCompileUnits()) {
+ OS << "\n.debug_info.dwo contents:\n";
+ for (unsigned i = 0, e = getNumDWOCompileUnits(); i != e; ++i)
+ getDWOCompileUnitAtIndex(i)->dump(OS);
+ }
- if (DumpType == DIDT_All || DumpType == DIDT_StrDwo) {
- OS << "\n.debug_str.dwo contents:\n";
- DataExtractor strDWOData(getStringDWOSection(), isLittleEndian(), 0);
- offset = 0;
- uint32_t strDWOOffset = 0;
- while (const char *s = strDWOData.getCStr(&offset)) {
- OS << format("0x%8.8x: \"%s\"\n", strDWOOffset, s);
- strDWOOffset = offset;
+ if (DumpType == DIDT_All || DumpType == DIDT_StrDwo)
+ if (!getStringDWOSection().empty()) {
+ OS << "\n.debug_str.dwo contents:\n";
+ DataExtractor strDWOData(getStringDWOSection(), isLittleEndian(), 0);
+ offset = 0;
+ uint32_t strDWOOffset = 0;
+ while (const char *s = strDWOData.getCStr(&offset)) {
+ OS << format("0x%8.8x: \"%s\"\n", strDWOOffset, s);
+ strDWOOffset = offset;
+ }
}
- }
- if (DumpType == DIDT_All || DumpType == DIDT_StrOffsetsDwo) {
- OS << "\n.debug_str_offsets.dwo contents:\n";
- DataExtractor strOffsetExt(getStringOffsetDWOSection(), isLittleEndian(), 0);
- offset = 0;
- while (offset < getStringOffsetDWOSection().size()) {
- OS << format("0x%8.8x: ", offset);
- OS << format("%8.8x\n", strOffsetExt.getU32(&offset));
+ if (DumpType == DIDT_All || DumpType == DIDT_StrOffsetsDwo)
+ if (!getStringOffsetDWOSection().empty()) {
+ OS << "\n.debug_str_offsets.dwo contents:\n";
+ DataExtractor strOffsetExt(getStringOffsetDWOSection(), isLittleEndian(), 0);
+ offset = 0;
+ uint64_t size = getStringOffsetDWOSection().size();
+ while (offset < size) {
+ OS << format("0x%8.8x: ", offset);
+ OS << format("%8.8x\n", strOffsetExt.getU32(&offset));
+ }
}
- }
}
const DWARFDebugAbbrev *DWARFContext::getDebugAbbrev() {
return AbbrevDWO.get();
}
+const DWARFDebugLoc *DWARFContext::getDebugLoc() {
+ if (Loc)
+ return Loc.get();
+
+ DataExtractor LocData(getLocSection(), isLittleEndian(), 0);
+ Loc.reset(new DWARFDebugLoc(locRelocMap()));
+ // assume all compile units have the same address byte size
+ if (getNumCompileUnits())
+ Loc->parse(LocData, getCompileUnitAtIndex(0)->getAddressByteSize());
+ return Loc.get();
+}
+
const DWARFDebugAranges *DWARFContext::getDebugAranges() {
if (Aranges)
return Aranges.get();
return InliningInfo;
}
+static bool consumeCompressedDebugSectionHeader(StringRef &data,
+ uint64_t &OriginalSize) {
+ // Consume "ZLIB" prefix.
+ if (!data.startswith("ZLIB"))
+ return false;
+ data = data.substr(4);
+ // Consume uncompressed section size (big-endian 8 bytes).
+ DataExtractor extractor(data, false, 8);
+ uint32_t Offset = 0;
+ OriginalSize = extractor.getU64(&Offset);
+ if (Offset == 0)
+ return false;
+ data = data.substr(Offset);
+ return true;
+}
+
DWARFContextInMemory::DWARFContextInMemory(object::ObjectFile *Obj) :
IsLittleEndian(Obj->isLittleEndian()),
AddressSize(Obj->getBytesInAddress()) {
name = name.substr(name.find_first_not_of("._")); // Skip . and _ prefixes.
+ // Check if debug info section is compressed with zlib.
+ if (name.startswith("zdebug_")) {
+ uint64_t OriginalSize;
+ if (!zlib::isAvailable() ||
+ !consumeCompressedDebugSectionHeader(data, OriginalSize))
+ continue;
+ OwningPtr<MemoryBuffer> UncompressedSection;
+ if (zlib::uncompress(data, UncompressedSection, OriginalSize) !=
+ zlib::StatusOK)
+ continue;
+ // Make data point to uncompressed section contents and save its contents.
+ name = name.substr(1);
+ data = UncompressedSection->getBuffer();
+ UncompressedSections.push_back(UncompressedSection.take());
+ }
+
StringRef *Section = StringSwitch<StringRef*>(name)
.Case("debug_info", &InfoSection)
.Case("debug_abbrev", &AbbrevSection)
+ .Case("debug_loc", &LocSection)
.Case("debug_line", &LineSection)
.Case("debug_aranges", &ARangeSection)
.Case("debug_frame", &DebugFrameSection)
.Case("debug_addr", &AddrSection)
// Any more debug info sections go here.
.Default(0);
- if (!Section)
- continue;
- *Section = data;
- if (name == "debug_ranges") {
- // FIXME: Use the other dwo range section when we emit it.
- RangeDWOSection = data;
+ if (Section) {
+ *Section = data;
+ if (name == "debug_ranges") {
+ // FIXME: Use the other dwo range section when we emit it.
+ RangeDWOSection = data;
+ }
}
+ section_iterator RelocatedSection = i->getRelocatedSection();
+ if (RelocatedSection == Obj->end_sections())
+ continue;
+
+ StringRef RelSecName;
+ RelocatedSection->getName(RelSecName);
+ RelSecName = RelSecName.substr(
+ RelSecName.find_first_not_of("._")); // Skip . and _ prefixes.
+
// TODO: Add support for relocations in other sections as needed.
// Record relocations for the debug_info and debug_line sections.
- RelocAddrMap *Map = StringSwitch<RelocAddrMap*>(name)
+ RelocAddrMap *Map = StringSwitch<RelocAddrMap*>(RelSecName)
.Case("debug_info", &InfoRelocMap)
+ .Case("debug_loc", &LocRelocMap)
.Case("debug_info.dwo", &InfoDWORelocMap)
.Case("debug_line", &LineRelocMap)
.Default(0);
if (i->begin_relocations() != i->end_relocations()) {
uint64_t SectionSize;
- i->getSize(SectionSize);
+ RelocatedSection->getSize(SectionSize);
for (object::relocation_iterator reloc_i = i->begin_relocations(),
reloc_e = i->end_relocations();
reloc_i != reloc_e; reloc_i.increment(ec)) {
uint64_t Address;
- reloc_i->getAddress(Address);
+ reloc_i->getOffset(Address);
uint64_t Type;
reloc_i->getType(Type);
uint64_t SymAddr = 0;
// ELF relocations may need the symbol address
if (Obj->isELF()) {
- object::SymbolRef Sym;
- reloc_i->getSymbol(Sym);
- Sym.getAddress(SymAddr);
+ object::symbol_iterator Sym = reloc_i->getSymbol();
+ Sym->getAddress(SymAddr);
}
object::RelocVisitor V(Obj->getFileFormatName());
}
}
+DWARFContextInMemory::~DWARFContextInMemory() {
+ DeleteContainerPointers(UncompressedSections);
+}
+
void DWARFContextInMemory::anchor() { }