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Diffstat (limited to 'lib/DebugInfo/DWARFContext.cpp')
-rw-r--r--lib/DebugInfo/DWARFContext.cpp266
1 files changed, 162 insertions, 104 deletions
diff --git a/lib/DebugInfo/DWARFContext.cpp b/lib/DebugInfo/DWARFContext.cpp
index 51ad645..e477190 100644
--- a/lib/DebugInfo/DWARFContext.cpp
+++ b/lib/DebugInfo/DWARFContext.cpp
@@ -23,6 +23,41 @@ using namespace object;
typedef DWARFDebugLine::LineTable DWARFLineTable;
+DWARFContext::~DWARFContext() {
+ DeleteContainerPointers(CUs);
+ DeleteContainerPointers(TUs);
+ DeleteContainerPointers(DWOCUs);
+}
+
+static void dumpPubSection(raw_ostream &OS, StringRef Name, StringRef Data,
+ bool LittleEndian, bool GnuStyle) {
+ OS << "\n." << Name << " contents:\n";
+ DataExtractor pubNames(Data, LittleEndian, 0);
+ uint32_t offset = 0;
+ OS << "length = " << format("0x%08x", pubNames.getU32(&offset));
+ OS << " version = " << format("0x%04x", pubNames.getU16(&offset));
+ OS << " unit_offset = " << format("0x%08x", pubNames.getU32(&offset));
+ OS << " unit_size = " << format("0x%08x", pubNames.getU32(&offset)) << '\n';
+ if (GnuStyle)
+ OS << "Offset Linkage Kind Name\n";
+ else
+ OS << "Offset Name\n";
+
+ while (offset < Data.size()) {
+ uint32_t dieRef = pubNames.getU32(&offset);
+ if (dieRef == 0)
+ break;
+ OS << format("0x%8.8x ", dieRef);
+ if (GnuStyle) {
+ PubIndexEntryDescriptor desc(pubNames.getU8(&offset));
+ OS << format("%-8s", dwarf::GDBIndexEntryLinkageString(desc.Linkage))
+ << ' ' << format("%-8s", dwarf::GDBIndexEntryKindString(desc.Kind))
+ << ' ';
+ }
+ OS << '\"' << pubNames.getCStr(&offset) << "\"\n";
+ }
+}
+
void DWARFContext::dump(raw_ostream &OS, DIDumpType DumpType) {
if (DumpType == DIDT_All || DumpType == DIDT_Abbrev) {
OS << ".debug_abbrev contents:\n";
@@ -35,8 +70,14 @@ void DWARFContext::dump(raw_ostream &OS, DIDumpType DumpType) {
getCompileUnitAtIndex(i)->dump(OS);
}
+ if (DumpType == DIDT_All || DumpType == DIDT_Types) {
+ OS << "\n.debug_types contents:\n";
+ for (unsigned i = 0, e = getNumTypeUnits(); i != e; ++i)
+ getTypeUnitAtIndex(i)->dump(OS);
+ }
+
if (DumpType == DIDT_All || DumpType == DIDT_Loc) {
- OS << ".debug_loc contents:\n";
+ OS << "\n.debug_loc contents:\n";
getDebugLoc()->dump(OS);
}
@@ -61,13 +102,13 @@ void DWARFContext::dump(raw_ostream &OS, DIDumpType DumpType) {
DWARFCompileUnit *cu = getCompileUnitAtIndex(i);
savedAddressByteSize = cu->getAddressByteSize();
unsigned stmtOffset =
- cu->getCompileUnitDIE()->getAttributeValueAsUnsigned(cu, DW_AT_stmt_list,
- -1U);
+ cu->getCompileUnitDIE()->getAttributeValueAsSectionOffset(
+ cu, DW_AT_stmt_list, -1U);
if (stmtOffset != -1U) {
- DataExtractor lineData(getLineSection(), isLittleEndian(),
+ DataExtractor lineData(getLineSection().Data, isLittleEndian(),
savedAddressByteSize);
DWARFDebugLine::DumpingState state(OS);
- DWARFDebugLine::parseStatementTable(lineData, &lineRelocMap(), &stmtOffset, state);
+ DWARFDebugLine::parseStatementTable(lineData, &getLineSection().Relocs, &stmtOffset, state);
}
}
}
@@ -97,23 +138,21 @@ void DWARFContext::dump(raw_ostream &OS, DIDumpType DumpType) {
rangeList.dump(OS);
}
- if (DumpType == DIDT_All || DumpType == DIDT_Pubnames) {
- OS << "\n.debug_pubnames contents:\n";
- DataExtractor pubNames(getPubNamesSection(), isLittleEndian(), 0);
- offset = 0;
- OS << "Length: " << pubNames.getU32(&offset) << "\n";
- OS << "Version: " << pubNames.getU16(&offset) << "\n";
- OS << "Offset in .debug_info: " << pubNames.getU32(&offset) << "\n";
- OS << "Size: " << pubNames.getU32(&offset) << "\n";
- OS << "\n Offset Name\n";
- while (offset < getPubNamesSection().size()) {
- uint32_t n = pubNames.getU32(&offset);
- if (n == 0)
- break;
- OS << format("%8x ", n);
- OS << pubNames.getCStr(&offset) << "\n";
- }
- }
+ if (DumpType == DIDT_All || DumpType == DIDT_Pubnames)
+ dumpPubSection(OS, "debug_pubnames", getPubNamesSection(),
+ isLittleEndian(), false);
+
+ if (DumpType == DIDT_All || DumpType == DIDT_Pubtypes)
+ dumpPubSection(OS, "debug_pubtypes", getPubTypesSection(),
+ isLittleEndian(), false);
+
+ if (DumpType == DIDT_All || DumpType == DIDT_GnuPubnames)
+ dumpPubSection(OS, "debug_gnu_pubnames", getGnuPubNamesSection(),
+ isLittleEndian(), true /* GnuStyle */);
+
+ if (DumpType == DIDT_All || DumpType == DIDT_GnuPubtypes)
+ dumpPubSection(OS, "debug_gnu_pubtypes", getGnuPubTypesSection(),
+ isLittleEndian(), true /* GnuStyle */);
if (DumpType == DIDT_All || DumpType == DIDT_AbbrevDwo) {
const DWARFDebugAbbrev *D = getDebugAbbrevDWO();
@@ -180,8 +219,8 @@ const DWARFDebugLoc *DWARFContext::getDebugLoc() {
if (Loc)
return Loc.get();
- DataExtractor LocData(getLocSection(), isLittleEndian(), 0);
- Loc.reset(new DWARFDebugLoc(locRelocMap()));
+ DataExtractor LocData(getLocSection().Data, isLittleEndian(), 0);
+ Loc.reset(new DWARFDebugLoc(getLocSection().Relocs));
// assume all compile units have the same address byte size
if (getNumCompileUnits())
Loc->parse(LocData, getCompileUnitAtIndex(0)->getAddressByteSize());
@@ -192,13 +231,7 @@ const DWARFDebugAranges *DWARFContext::getDebugAranges() {
if (Aranges)
return Aranges.get();
- DataExtractor arangesData(getARangeSection(), isLittleEndian(), 0);
-
Aranges.reset(new DWARFDebugAranges());
- Aranges->extract(arangesData);
- // Generate aranges from DIEs: even if .debug_aranges section is present,
- // it may describe only a small subset of compilation units, so we need to
- // manually build aranges for the rest of them.
Aranges->generate(this);
return Aranges.get();
}
@@ -226,11 +259,11 @@ const DWARFDebugFrame *DWARFContext::getDebugFrame() {
const DWARFLineTable *
DWARFContext::getLineTableForCompileUnit(DWARFCompileUnit *cu) {
if (!Line)
- Line.reset(new DWARFDebugLine(&lineRelocMap()));
+ Line.reset(new DWARFDebugLine(&getLineSection().Relocs));
unsigned stmtOffset =
- cu->getCompileUnitDIE()->getAttributeValueAsUnsigned(cu, DW_AT_stmt_list,
- -1U);
+ cu->getCompileUnitDIE()->getAttributeValueAsSectionOffset(
+ cu, DW_AT_stmt_list, -1U);
if (stmtOffset == -1U)
return 0; // No line table for this compile unit.
@@ -239,64 +272,79 @@ DWARFContext::getLineTableForCompileUnit(DWARFCompileUnit *cu) {
return lt;
// We have to parse it first.
- DataExtractor lineData(getLineSection(), isLittleEndian(),
+ DataExtractor lineData(getLineSection().Data, isLittleEndian(),
cu->getAddressByteSize());
return Line->getOrParseLineTable(lineData, stmtOffset);
}
void DWARFContext::parseCompileUnits() {
uint32_t offset = 0;
- const DataExtractor &DIData = DataExtractor(getInfoSection(),
+ const DataExtractor &DIData = DataExtractor(getInfoSection().Data,
isLittleEndian(), 0);
while (DIData.isValidOffset(offset)) {
- CUs.push_back(DWARFCompileUnit(getDebugAbbrev(), getInfoSection(),
- getAbbrevSection(), getRangeSection(),
- getStringSection(), StringRef(),
- getAddrSection(),
- &infoRelocMap(),
- isLittleEndian()));
- if (!CUs.back().extract(DIData, &offset)) {
- CUs.pop_back();
+ OwningPtr<DWARFCompileUnit> CU(new DWARFCompileUnit(
+ getDebugAbbrev(), getInfoSection().Data, getAbbrevSection(),
+ getRangeSection(), getStringSection(), StringRef(), getAddrSection(),
+ &getInfoSection().Relocs, isLittleEndian()));
+ if (!CU->extract(DIData, &offset)) {
break;
}
+ CUs.push_back(CU.take());
+ offset = CUs.back()->getNextUnitOffset();
+ }
+}
- offset = CUs.back().getNextCompileUnitOffset();
+void DWARFContext::parseTypeUnits() {
+ const std::map<object::SectionRef, Section> &Sections = getTypesSections();
+ for (std::map<object::SectionRef, Section>::const_iterator
+ I = Sections.begin(),
+ E = Sections.end();
+ I != E; ++I) {
+ uint32_t offset = 0;
+ const DataExtractor &DIData =
+ DataExtractor(I->second.Data, isLittleEndian(), 0);
+ while (DIData.isValidOffset(offset)) {
+ OwningPtr<DWARFTypeUnit> TU(new DWARFTypeUnit(
+ getDebugAbbrev(), I->second.Data, getAbbrevSection(),
+ getRangeSection(), getStringSection(), StringRef(), getAddrSection(),
+ &I->second.Relocs, isLittleEndian()));
+ if (!TU->extract(DIData, &offset))
+ break;
+ TUs.push_back(TU.take());
+ offset = TUs.back()->getNextUnitOffset();
+ }
}
}
void DWARFContext::parseDWOCompileUnits() {
uint32_t offset = 0;
- const DataExtractor &DIData = DataExtractor(getInfoDWOSection(),
- isLittleEndian(), 0);
+ const DataExtractor &DIData =
+ DataExtractor(getInfoDWOSection().Data, isLittleEndian(), 0);
while (DIData.isValidOffset(offset)) {
- DWOCUs.push_back(DWARFCompileUnit(getDebugAbbrevDWO(), getInfoDWOSection(),
- getAbbrevDWOSection(),
- getRangeDWOSection(),
- getStringDWOSection(),
- getStringOffsetDWOSection(),
- getAddrSection(),
- &infoDWORelocMap(),
- isLittleEndian()));
- if (!DWOCUs.back().extract(DIData, &offset)) {
- DWOCUs.pop_back();
+ OwningPtr<DWARFCompileUnit> DWOCU(new DWARFCompileUnit(
+ getDebugAbbrevDWO(), getInfoDWOSection().Data, getAbbrevDWOSection(),
+ getRangeDWOSection(), getStringDWOSection(),
+ getStringOffsetDWOSection(), getAddrSection(),
+ &getInfoDWOSection().Relocs, isLittleEndian()));
+ if (!DWOCU->extract(DIData, &offset)) {
break;
}
-
- offset = DWOCUs.back().getNextCompileUnitOffset();
+ DWOCUs.push_back(DWOCU.take());
+ offset = DWOCUs.back()->getNextUnitOffset();
}
}
namespace {
struct OffsetComparator {
- bool operator()(const DWARFCompileUnit &LHS,
- const DWARFCompileUnit &RHS) const {
- return LHS.getOffset() < RHS.getOffset();
+ bool operator()(const DWARFCompileUnit *LHS,
+ const DWARFCompileUnit *RHS) const {
+ return LHS->getOffset() < RHS->getOffset();
}
- bool operator()(const DWARFCompileUnit &LHS, uint32_t RHS) const {
- return LHS.getOffset() < RHS;
+ bool operator()(const DWARFCompileUnit *LHS, uint32_t RHS) const {
+ return LHS->getOffset() < RHS;
}
- bool operator()(uint32_t LHS, const DWARFCompileUnit &RHS) const {
- return LHS < RHS.getOffset();
+ bool operator()(uint32_t LHS, const DWARFCompileUnit *RHS) const {
+ return LHS < RHS->getOffset();
}
};
}
@@ -305,10 +353,11 @@ DWARFCompileUnit *DWARFContext::getCompileUnitForOffset(uint32_t Offset) {
if (CUs.empty())
parseCompileUnits();
- DWARFCompileUnit *CU = std::lower_bound(CUs.begin(), CUs.end(), Offset,
- OffsetComparator());
- if (CU != CUs.end())
- return &*CU;
+ DWARFCompileUnit **CU =
+ std::lower_bound(CUs.begin(), CUs.end(), Offset, OffsetComparator());
+ if (CU != CUs.end()) {
+ return *CU;
+ }
return 0;
}
@@ -380,7 +429,7 @@ DILineInfo DWARFContext::getLineInfoForAddress(uint64_t Address,
CU->getInlinedChainForAddress(Address);
if (InlinedChain.DIEs.size() > 0) {
const DWARFDebugInfoEntryMinimal &TopFunctionDIE = InlinedChain.DIEs[0];
- if (const char *Name = TopFunctionDIE.getSubroutineName(InlinedChain.CU))
+ if (const char *Name = TopFunctionDIE.getSubroutineName(InlinedChain.U))
FunctionName = Name;
}
}
@@ -413,19 +462,16 @@ DILineInfoTable DWARFContext::getLineInfoForAddressRange(uint64_t Address,
CU->getInlinedChainForAddress(Address);
if (InlinedChain.DIEs.size() > 0) {
const DWARFDebugInfoEntryMinimal &TopFunctionDIE = InlinedChain.DIEs[0];
- if (const char *Name = TopFunctionDIE.getSubroutineName(InlinedChain.CU))
+ if (const char *Name = TopFunctionDIE.getSubroutineName(InlinedChain.U))
FunctionName = Name;
}
}
- StringRef FuncNameRef = StringRef(FunctionName);
-
// If the Specifier says we don't need FileLineInfo, just
// return the top-most function at the starting address.
if (!Specifier.needs(DILineInfoSpecifier::FileLineInfo)) {
- Lines.push_back(std::make_pair(Address,
- DILineInfo(StringRef("<invalid>"),
- FuncNameRef, 0, 0)));
+ Lines.push_back(
+ std::make_pair(Address, DILineInfo("<invalid>", FunctionName, 0, 0)));
return Lines;
}
@@ -446,9 +492,8 @@ DILineInfoTable DWARFContext::getLineInfoForAddressRange(uint64_t Address,
std::string FileName = "<invalid>";
getFileNameForCompileUnit(CU, LineTable, Row.File,
NeedsAbsoluteFilePath, FileName);
- Lines.push_back(std::make_pair(Row.Address,
- DILineInfo(StringRef(FileName),
- FuncNameRef, Row.Line, Row.Column)));
+ Lines.push_back(std::make_pair(
+ Row.Address, DILineInfo(FileName, FunctionName, Row.Line, Row.Column)));
}
return Lines;
@@ -476,7 +521,7 @@ DIInliningInfo DWARFContext::getInliningInfoForAddress(uint64_t Address,
uint32_t Column = 0;
// Get function name if necessary.
if (Specifier.needs(DILineInfoSpecifier::FunctionName)) {
- if (const char *Name = FunctionDIE.getSubroutineName(InlinedChain.CU))
+ if (const char *Name = FunctionDIE.getSubroutineName(InlinedChain.U))
FunctionName = Name;
}
if (Specifier.needs(DILineInfoSpecifier::FileLineInfo)) {
@@ -500,7 +545,7 @@ DIInliningInfo DWARFContext::getInliningInfoForAddress(uint64_t Address,
}
// Get call file/line/column of a current DIE.
if (i + 1 < n) {
- FunctionDIE.getCallerFrame(InlinedChain.CU, CallFile, CallLine,
+ FunctionDIE.getCallerFrame(InlinedChain.U, CallFile, CallLine,
CallColumn);
}
}
@@ -557,29 +602,37 @@ DWARFContextInMemory::DWARFContextInMemory(object::ObjectFile *Obj) :
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_str", &StringSection)
- .Case("debug_ranges", &RangeSection)
- .Case("debug_pubnames", &PubNamesSection)
- .Case("debug_info.dwo", &InfoDWOSection)
- .Case("debug_abbrev.dwo", &AbbrevDWOSection)
- .Case("debug_str.dwo", &StringDWOSection)
- .Case("debug_str_offsets.dwo", &StringOffsetDWOSection)
- .Case("debug_addr", &AddrSection)
- // Any more debug info sections go here.
- .Default(0);
+ StringRef *Section =
+ StringSwitch<StringRef *>(name)
+ .Case("debug_info", &InfoSection.Data)
+ .Case("debug_abbrev", &AbbrevSection)
+ .Case("debug_loc", &LocSection.Data)
+ .Case("debug_line", &LineSection.Data)
+ .Case("debug_aranges", &ARangeSection)
+ .Case("debug_frame", &DebugFrameSection)
+ .Case("debug_str", &StringSection)
+ .Case("debug_ranges", &RangeSection)
+ .Case("debug_pubnames", &PubNamesSection)
+ .Case("debug_pubtypes", &PubTypesSection)
+ .Case("debug_gnu_pubnames", &GnuPubNamesSection)
+ .Case("debug_gnu_pubtypes", &GnuPubTypesSection)
+ .Case("debug_info.dwo", &InfoDWOSection.Data)
+ .Case("debug_abbrev.dwo", &AbbrevDWOSection)
+ .Case("debug_str.dwo", &StringDWOSection)
+ .Case("debug_str_offsets.dwo", &StringOffsetDWOSection)
+ .Case("debug_addr", &AddrSection)
+ // Any more debug info sections go here.
+ .Default(0);
if (Section) {
*Section = data;
if (name == "debug_ranges") {
// FIXME: Use the other dwo range section when we emit it.
RangeDWOSection = data;
}
+ } else if (name == "debug_types") {
+ // Find debug_types data by section rather than name as there are
+ // multiple, comdat grouped, debug_types sections.
+ TypesSections[*i].Data = data;
}
section_iterator RelocatedSection = i->getRelocatedSection();
@@ -594,13 +647,18 @@ DWARFContextInMemory::DWARFContextInMemory(object::ObjectFile *Obj) :
// TODO: Add support for relocations in other sections as needed.
// Record relocations for the debug_info and debug_line sections.
RelocAddrMap *Map = StringSwitch<RelocAddrMap*>(RelSecName)
- .Case("debug_info", &InfoRelocMap)
- .Case("debug_loc", &LocRelocMap)
- .Case("debug_info.dwo", &InfoDWORelocMap)
- .Case("debug_line", &LineRelocMap)
+ .Case("debug_info", &InfoSection.Relocs)
+ .Case("debug_loc", &LocSection.Relocs)
+ .Case("debug_info.dwo", &InfoDWOSection.Relocs)
+ .Case("debug_line", &LineSection.Relocs)
.Default(0);
- if (!Map)
- continue;
+ if (!Map) {
+ if (RelSecName != "debug_types")
+ continue;
+ // Find debug_types relocs by section rather than name as there are
+ // multiple, comdat grouped, debug_types sections.
+ Map = &TypesSections[*RelocatedSection].Relocs;
+ }
if (i->begin_relocations() != i->end_relocations()) {
uint64_t SectionSize;
generated by cgit v1.1 at 2024-05-17 21:17:14 +0000