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llvm-dwarfdump: add support for .apple_types in --find

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llvm-svn: 314479
This commit is contained in:
Adrian Prantl 2017-09-29 00:33:22 +00:00
parent ad66b459bd
commit d2beca911e
4 changed files with 33 additions and 7 deletions
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4
include/llvm/DebugInfo/DWARF/DWARFContext.h
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@ -70,6 +70,7 @@ class DWARFContext : public DIContext {
std::unique_ptr<DWARFDebugFrame> EHFrame;
std::unique_ptr<DWARFDebugMacro> Macro;
std::unique_ptr<DWARFAcceleratorTable> AppleNames;
std::unique_ptr<DWARFAcceleratorTable> AppleTypes;
DWARFUnitSection<DWARFCompileUnit> DWOCUs;
std::deque<DWARFUnitSection<DWARFTypeUnit>> DWOTUs;
@ -242,6 +243,9 @@ public:
/// Get a reference to the parsed accelerator table object.
const DWARFAcceleratorTable &getAppleNames();
/// Get a reference to the parsed accelerator table object.
const DWARFAcceleratorTable &getAppleTypes();
/// Get a pointer to a parsed line table corresponding to a compile unit.
const DWARFDebugLine::LineTable *getLineTableForUnit(DWARFUnit *cu);

8
lib/DebugInfo/DWARF/DWARFContext.cpp
View File

@ -457,8 +457,7 @@ void DWARFContext::dump(
if (shouldDump(Explicit, ".apple_types", DIDT_ID_AppleTypes,
DObj->getAppleTypesSection().Data))
dumpAccelSection(OS, *DObj, DObj->getAppleTypesSection(),
DObj->getStringSection(), isLittleEndian());
getAppleTypes().dump(OS);
if (shouldDump(Explicit, ".apple_namespaces", DIDT_ID_AppleNamespaces,
DObj->getAppleNamespacesSection().Data))
@ -655,6 +654,11 @@ const DWARFAcceleratorTable &DWARFContext::getAppleNames() {
DObj->getStringSection(), isLittleEndian());
}
const DWARFAcceleratorTable &DWARFContext::getAppleTypes() {
return getAccelTable(AppleTypes, *DObj, DObj->getAppleTypesSection(),
DObj->getStringSection(), isLittleEndian());
}
const DWARFLineTable *
DWARFContext::getLineTableForUnit(DWARFUnit *U) {
if (!Line)

9
test/tools/llvm-dwarfdump/X86/find.test
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@ -26,3 +26,12 @@ MULTI: : DW_TAG_variable
MULTI-NOT: {{: DW}}
MULTI: DW_AT_name ("x86_64h_var")
MULTI-NOT: {{: DW}}
RUN: llvm-mc %S/brief.s -filetype obj -triple x86_64-apple-darwin -o - \
RUN: | llvm-dwarfdump -find=int - | FileCheck %s --check-prefix=TYPES
TYPES: .debug_info contents:
TYPES-NOT: {{:}}
TYPES: : DW_TAG_base_type
TYPES-NOT: {{:}}
TYPES: DW_AT_name ("int")
TYPES-NOT: {{:}}

19
tools/llvm-dwarfdump/llvm-dwarfdump.cpp
View File

@ -247,11 +247,20 @@ static bool dumpObjectFile(ObjectFile &Obj, DWARFContext &DICtx, Twine Filename,
// Handle the --find option and lower it to --debug-info=<offset>.
if (!Find.empty()) {
DumpOffsets[DIDT_ID_DebugInfo] = [&]() -> llvm::Optional<uint64_t> {
for (auto Name : Find)
for (auto Entry : DICtx.getAppleNames().equal_range(Name))
for (auto Atom : Entry)
if (auto Offset = Atom.getAsSectionOffset())
return DumpOffsets[DIDT_ID_DebugInfo] = *Offset;
for (auto Name : Find) {
auto find = [&](const DWARFAcceleratorTable &Accel)
-> llvm::Optional<uint64_t> {
for (auto Entry : Accel.equal_range(Name))
for (auto Atom : Entry)
if (auto Offset = Atom.getAsSectionOffset())
return Offset;
return None;
};
if (auto Offset = find(DICtx.getAppleNames()))
return DumpOffsets[DIDT_ID_DebugInfo] = *Offset;
if (auto Offset = find(DICtx.getAppleTypes()))
return DumpOffsets[DIDT_ID_DebugInfo] = *Offset;
}
return None;
}();
// Early exit if --find was specified but the current file doesn't have it.