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Diffstat (limited to 'lib/DebugInfo/DWARF/DWARFContext.cpp')
-rw-r--r--lib/DebugInfo/DWARF/DWARFContext.cpp124
1 files changed, 57 insertions, 67 deletions
diff --git a/lib/DebugInfo/DWARF/DWARFContext.cpp b/lib/DebugInfo/DWARF/DWARFContext.cpp
index a18d4efec07a..495e09fbae35 100644
--- a/lib/DebugInfo/DWARF/DWARFContext.cpp
+++ b/lib/DebugInfo/DWARF/DWARFContext.cpp
@@ -591,10 +591,10 @@ void DWARFContext::parseCompileUnits() {
void DWARFContext::parseTypeUnits() {
if (!TUs.empty())
return;
- for (const auto &I : getTypesSections()) {
+ forEachTypesSections([&](const DWARFSection &S) {
TUs.emplace_back();
- TUs.back().parse(*this, I.second);
- }
+ TUs.back().parse(*this, S);
+ });
}
void DWARFContext::parseDWOCompileUnits() {
@@ -604,10 +604,10 @@ void DWARFContext::parseDWOCompileUnits() {
void DWARFContext::parseDWOTypeUnits() {
if (!DWOTUs.empty())
return;
- for (const auto &I : getTypesDWOSections()) {
+ forEachTypesDWOSections([&](const DWARFSection &S) {
DWOTUs.emplace_back();
- DWOTUs.back().parseDWO(*this, I.second);
- }
+ DWOTUs.back().parseDWO(*this, S);
+ });
}
DWARFCompileUnit *DWARFContext::getCompileUnitForOffset(uint32_t Offset) {
@@ -937,27 +937,23 @@ DWARFContextInMemory::DWARFContextInMemory(
: FileName(Obj.getFileName()), IsLittleEndian(Obj.isLittleEndian()),
AddressSize(Obj.getBytesInAddress()) {
for (const SectionRef &Section : Obj.sections()) {
- StringRef name;
- Section.getName(name);
+ StringRef Name;
+ Section.getName(Name);
// Skip BSS and Virtual sections, they aren't interesting.
- bool IsBSS = Section.isBSS();
- if (IsBSS)
- continue;
- bool IsVirtual = Section.isVirtual();
- if (IsVirtual)
+ if (Section.isBSS() || Section.isVirtual())
continue;
- StringRef data;
+ StringRef Data;
section_iterator RelocatedSection = Section.getRelocatedSection();
// Try to obtain an already relocated version of this section.
// Else use the unrelocated section from the object file. We'll have to
// apply relocations ourselves later.
- if (!L || !L->getLoadedSectionContents(*RelocatedSection, data))
- Section.getContents(data);
+ if (!L || !L->getLoadedSectionContents(*RelocatedSection, Data))
+ Section.getContents(Data);
- if (auto Err = maybeDecompress(Section, name, data)) {
+ if (auto Err = maybeDecompress(Section, Name, Data)) {
ErrorPolicy EP = HandleError(
- createError("failed to decompress '" + name + "', ", std::move(Err)));
+ createError("failed to decompress '" + Name + "', ", std::move(Err)));
if (EP == ErrorPolicy::Halt)
return;
continue;
@@ -965,27 +961,27 @@ DWARFContextInMemory::DWARFContextInMemory(
// Compressed sections names in GNU style starts from ".z",
// at this point section is decompressed and we drop compression prefix.
- name = name.substr(
- name.find_first_not_of("._z")); // Skip ".", "z" and "_" prefixes.
+ Name = Name.substr(
+ Name.find_first_not_of("._z")); // Skip ".", "z" and "_" prefixes.
+
+ // Map platform specific debug section names to DWARF standard section
+ // names.
+ Name = Obj.mapDebugSectionName(Name);
- if (StringRef *SectionData = MapSectionToMember(name)) {
- *SectionData = data;
- if (name == "debug_ranges") {
+ if (StringRef *SectionData = mapSectionToMember(Name)) {
+ *SectionData = Data;
+ if (Name == "debug_ranges") {
// FIXME: Use the other dwo range section when we emit it.
- RangeDWOSection.Data = data;
+ RangeDWOSection.Data = Data;
}
- } else if (name == "debug_types") {
+ } else if (Name == "debug_types") {
// Find debug_types data by section rather than name as there are
// multiple, comdat grouped, debug_types sections.
- TypesSections[Section].Data = data;
- } else if (name == "debug_types.dwo") {
- TypesDWOSections[Section].Data = data;
+ TypesSections[Section].Data = Data;
+ } else if (Name == "debug_types.dwo") {
+ TypesDWOSections[Section].Data = Data;
}
- // Map platform specific debug section names to DWARF standard section
- // names.
- name = Obj.mapDebugSectionName(name);
-
if (RelocatedSection == Obj.section_end())
continue;
@@ -1012,21 +1008,8 @@ DWARFContextInMemory::DWARFContextInMemory(
// 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", &InfoSection.Relocs)
- .Case("debug_loc", &LocSection.Relocs)
- .Case("debug_info.dwo", &InfoDWOSection.Relocs)
- .Case("debug_line", &LineSection.Relocs)
- .Case("debug_str_offsets", &StringOffsetSection.Relocs)
- .Case("debug_ranges", &RangeSection.Relocs)
- .Case("debug_addr", &AddrSection.Relocs)
- .Case("apple_names", &AppleNamesSection.Relocs)
- .Case("apple_types", &AppleTypesSection.Relocs)
- .Case("apple_namespaces", &AppleNamespacesSection.Relocs)
- .Case("apple_namespac", &AppleNamespacesSection.Relocs)
- .Case("apple_objc", &AppleObjCSection.Relocs)
- .Default(nullptr);
+ DWARFSection *Sec = mapNameToDWARFSection(RelSecName);
+ RelocAddrMap *Map = Sec ? &Sec->Relocs : nullptr;
if (!Map) {
// Find debug_types relocs by section rather than name as there are
// multiple, comdat grouped, debug_types sections.
@@ -1059,10 +1042,10 @@ DWARFContextInMemory::DWARFContextInMemory(
object::RelocVisitor V(Obj);
uint64_t Val = V.visit(Reloc.getType(), Reloc, SymInfoOrErr->Address);
if (V.error()) {
- SmallString<32> Name;
- Reloc.getTypeName(Name);
+ SmallString<32> Type;
+ Reloc.getTypeName(Type);
ErrorPolicy EP = HandleError(
- createError("failed to compute relocation: " + Name + ", ",
+ createError("failed to compute relocation: " + Type + ", ",
errorCodeToError(object_error::parse_failed)));
if (EP == ErrorPolicy::Halt)
return;
@@ -1079,40 +1062,47 @@ DWARFContextInMemory::DWARFContextInMemory(
bool isLittleEndian)
: IsLittleEndian(isLittleEndian), AddressSize(AddrSize) {
for (const auto &SecIt : Sections) {
- if (StringRef *SectionData = MapSectionToMember(SecIt.first()))
+ if (StringRef *SectionData = mapSectionToMember(SecIt.first()))
*SectionData = SecIt.second->getBuffer();
}
}
-StringRef *DWARFContextInMemory::MapSectionToMember(StringRef Name) {
+DWARFSection *DWARFContextInMemory::mapNameToDWARFSection(StringRef Name) {
+ return StringSwitch<DWARFSection *>(Name)
+ .Case("debug_info", &InfoSection)
+ .Case("debug_loc", &LocSection)
+ .Case("debug_line", &LineSection)
+ .Case("debug_str_offsets", &StringOffsetSection)
+ .Case("debug_ranges", &RangeSection)
+ .Case("debug_info.dwo", &InfoDWOSection)
+ .Case("debug_loc.dwo", &LocDWOSection)
+ .Case("debug_line.dwo", &LineDWOSection)
+ .Case("debug_str_offsets.dwo", &StringOffsetDWOSection)
+ .Case("debug_addr", &AddrSection)
+ .Case("apple_names", &AppleNamesSection)
+ .Case("apple_types", &AppleTypesSection)
+ .Case("apple_namespaces", &AppleNamespacesSection)
+ .Case("apple_namespac", &AppleNamespacesSection)
+ .Case("apple_objc", &AppleObjCSection)
+ .Default(nullptr);
+}
+
+StringRef *DWARFContextInMemory::mapSectionToMember(StringRef Name) {
+ if (DWARFSection *Sec = mapNameToDWARFSection(Name))
+ return &Sec->Data;
return 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("eh_frame", &EHFrameSection)
.Case("debug_str", &StringSection)
- .Case("debug_str_offsets", &StringOffsetSection.Data)
- .Case("debug_ranges", &RangeSection.Data)
.Case("debug_macinfo", &MacinfoSection)
.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_loc.dwo", &LocDWOSection.Data)
- .Case("debug_line.dwo", &LineDWOSection.Data)
.Case("debug_str.dwo", &StringDWOSection)
- .Case("debug_str_offsets.dwo", &StringOffsetDWOSection.Data)
- .Case("debug_addr", &AddrSection.Data)
- .Case("apple_names", &AppleNamesSection.Data)
- .Case("apple_types", &AppleTypesSection.Data)
- .Case("apple_namespaces", &AppleNamespacesSection.Data)
- .Case("apple_namespac", &AppleNamespacesSection.Data)
- .Case("apple_objc", &AppleObjCSection.Data)
.Case("debug_cu_index", &CUIndexSection)
.Case("debug_tu_index", &TUIndexSection)
.Case("gdb_index", &GdbIndexSection)
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-08 14:17:47 +0000