cl::init(false));
static cl::opt<bool> GenerateDwarfPubNamesSection("generate-dwarf-pubnames",
- cl::Hidden, cl::ZeroOrMore, cl::init(false),
+ cl::Hidden, cl::init(false),
cl::desc("Generate DWARF pubnames section"));
namespace {
namespace {
const char *DWARFGroupName = "DWARF Emission";
const char *DbgTimerName = "DWARF Debug Writer";
+
+ struct CompareFirst {
+ template <typename T> bool operator()(const T &lhs, const T &rhs) const {
+ return lhs.first < rhs.first;
+ }
+ };
} // end anonymous namespace
//===----------------------------------------------------------------------===//
DwarfInfoSectionSym = DwarfAbbrevSectionSym = 0;
DwarfStrSectionSym = TextSectionSym = 0;
DwarfDebugRangeSectionSym = DwarfDebugLocSectionSym = DwarfLineSectionSym = 0;
+ DwarfAddrSectionSym = 0;
DwarfAbbrevDWOSectionSym = DwarfStrDWOSectionSym = 0;
FunctionBeginSym = FunctionEndSym = 0;
// Turn on accelerator tables and older gdb compatibility
// for Darwin.
- bool IsDarwin = Triple(M->getTargetTriple()).isOSDarwin();
+ bool IsDarwin = Triple(A->getTargetTriple()).isOSDarwin();
if (DarwinGDBCompat == Default) {
if (IsDarwin)
IsDarwinGDBCompat = true;
}
else {
// There is no need to emit empty lexical block DIE.
- if (Children.empty())
+ std::pair<ImportedEntityMap::const_iterator,
+ ImportedEntityMap::const_iterator> Range = std::equal_range(
+ ScopesWithImportedEntities.begin(), ScopesWithImportedEntities.end(),
+ std::pair<const MDNode *, const MDNode *>(DS, (const MDNode*)0),
+ CompareFirst());
+ if (Children.empty() && Range.first == Range.second)
return NULL;
ScopeDIE = constructLexicalScopeDIE(TheCU, Scope);
+ for (ImportedEntityMap::const_iterator i = Range.first; i != Range.second; ++i)
+ constructImportedModuleDIE(TheCU, i->second, ScopeDIE);
}
if (!ScopeDIE) return NULL;
// We look up the CUID/file/dir by concatenating them with a zero byte.
SmallString<128> NamePair;
- NamePair += CUID;
+ NamePair += utostr(CUID);
NamePair += '\0';
NamePair += DirName;
NamePair += '\0'; // Zero bytes are not allowed in paths.
DIE *Die = new DIE(dwarf::DW_TAG_compile_unit);
CompileUnit *NewCU = new CompileUnit(GlobalCUIndexCount++,
- DIUnit.getLanguage(), Die, Asm,
+ DIUnit.getLanguage(), Die, N, Asm,
this, &InfoHolder);
FileIDCUMap[NewCU->getUniqueID()] = 0;
NewCU->addUInt(Die, dwarf::DW_AT_language, dwarf::DW_FORM_data2,
DIUnit.getLanguage());
NewCU->addString(Die, dwarf::DW_AT_name, FN);
+
// 2.17.1 requires that we use DW_AT_low_pc for a single entry point
- // into an entity. We're using 0 (or a NULL label) for this.
- NewCU->addLabelAddress(Die, dwarf::DW_AT_low_pc, NULL);
+ // into an entity. We're using 0 (or a NULL label) for this. For
+ // split dwarf it's in the skeleton CU so omit it here.
+ if (!useSplitDwarf())
+ NewCU->addLabelAddress(Die, dwarf::DW_AT_low_pc, NULL);
// Define start line table label for each Compile Unit.
MCSymbol *LineTableStartSym = Asm->GetTempSymbol("line_table_start",
NewCU->getUniqueID());
// DW_AT_stmt_list is a offset of line number information for this
- // compile unit in debug_line section.
+ // compile unit in debug_line section. For split dwarf this is
+ // left in the skeleton CU and so not included.
// The line table entries are not always emitted in assembly, so it
// is not okay to use line_table_start here.
- if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
- NewCU->addLabel(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4,
- NewCU->getUniqueID() == 0 ?
- Asm->GetTempSymbol("section_line") : LineTableStartSym);
- else if (NewCU->getUniqueID() == 0)
- NewCU->addUInt(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4, 0);
- else
- NewCU->addDelta(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4,
- LineTableStartSym, DwarfLineSectionSym);
+ if (!useSplitDwarf()) {
+ if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
+ NewCU->addLabel(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4,
+ NewCU->getUniqueID() == 0 ?
+ Asm->GetTempSymbol("section_line") : LineTableStartSym);
+ else if (NewCU->getUniqueID() == 0)
+ NewCU->addUInt(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4, 0);
+ else
+ NewCU->addDelta(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4,
+ LineTableStartSym, DwarfLineSectionSym);
+ }
- if (!CompilationDir.empty())
+ // If we're using split dwarf the compilation dir is going to be in the
+ // skeleton CU and so we don't need to duplicate it here.
+ if (!useSplitDwarf() && !CompilationDir.empty())
NewCU->addString(Die, dwarf::DW_AT_comp_dir, CompilationDir);
if (DIUnit.isOptimized())
NewCU->addFlag(Die, dwarf::DW_AT_APPLE_optimized);
if (!FirstCU)
FirstCU = NewCU;
- if (useSplitDwarf()) {
- // This should be a unique identifier when we want to build .dwp files.
- NewCU->addUInt(Die, dwarf::DW_AT_GNU_dwo_id, dwarf::DW_FORM_data8, 0);
- // Now construct the skeleton CU associated.
- constructSkeletonCU(N);
- }
-
InfoHolder.addUnit(NewCU);
CUMap.insert(std::make_pair(N, NewCU));
TheCU->addGlobalName(SP.getName(), SubprogramDie);
}
+void DwarfDebug::constructImportedEntityDIE(CompileUnit *TheCU,
+ const MDNode *N) {
+ DIImportedEntity Module(N);
+ if (!Module.Verify())
+ return;
+ if (DIE *D = TheCU->getOrCreateContextDIE(Module.getContext()))
+ constructImportedModuleDIE(TheCU, Module, D);
+}
+
+void DwarfDebug::constructImportedModuleDIE(CompileUnit *TheCU, const MDNode *N,
+ DIE *Context) {
+ DIImportedEntity Module(N);
+ if (!Module.Verify())
+ return;
+ return constructImportedModuleDIE(TheCU, Module, Context);
+}
+
+void DwarfDebug::constructImportedModuleDIE(CompileUnit *TheCU,
+ const DIImportedEntity &Module,
+ DIE *Context) {
+ assert(Module.Verify() &&
+ "Use one of the MDNode * overloads to handle invalid metadata");
+ assert(Context && "Should always have a context for an imported_module");
+ DIE *IMDie = new DIE(Module.getTag());
+ TheCU->insertDIE(Module, IMDie);
+ DIE *EntityDie;
+ DIDescriptor Entity = Module.getEntity();
+ if (Entity.isNameSpace())
+ EntityDie = TheCU->getOrCreateNameSpace(DINameSpace(Entity));
+ else if (Entity.isSubprogram())
+ EntityDie = TheCU->getOrCreateSubprogramDIE(DISubprogram(Entity));
+ else
+ return;
+ unsigned FileID = getOrCreateSourceID(Module.getContext().getFilename(),
+ Module.getContext().getDirectory(),
+ TheCU->getUniqueID());
+ TheCU->addUInt(IMDie, dwarf::DW_AT_decl_file, 0, FileID);
+ TheCU->addUInt(IMDie, dwarf::DW_AT_decl_line, 0, Module.getLineNumber());
+ TheCU->addDIEEntry(IMDie, dwarf::DW_AT_import, dwarf::DW_FORM_ref4, EntityDie);
+ Context->addChild(IMDie);
+}
+
// Emit all Dwarf sections that should come prior to the content. Create
// global DIEs and emit initial debug info sections. This is invoked by
// the target AsmPrinter.
for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
DICompileUnit CUNode(CU_Nodes->getOperand(i));
CompileUnit *CU = constructCompileUnit(CUNode);
+ DIArray ImportedEntities = CUNode.getImportedEntities();
+ for (unsigned i = 0, e = ImportedEntities.getNumElements(); i != e; ++i)
+ ScopesWithImportedEntities.push_back(std::make_pair(
+ DIImportedEntity(ImportedEntities.getElement(i)).getContext(),
+ ImportedEntities.getElement(i)));
+ std::sort(ScopesWithImportedEntities.begin(),
+ ScopesWithImportedEntities.end(), CompareFirst());
DIArray GVs = CUNode.getGlobalVariables();
for (unsigned i = 0, e = GVs.getNumElements(); i != e; ++i)
CU->createGlobalVariableDIE(GVs.getElement(i));
DIArray RetainedTypes = CUNode.getRetainedTypes();
for (unsigned i = 0, e = RetainedTypes.getNumElements(); i != e; ++i)
CU->getOrCreateTypeDIE(RetainedTypes.getElement(i));
+ // Emit imported_modules last so that the relevant context is already
+ // available.
+ for (unsigned i = 0, e = ImportedEntities.getNumElements(); i != e; ++i)
+ constructImportedEntityDIE(CU, ImportedEntities.getElement(i));
+ // If we're splitting the dwarf out now that we've got the entire
+ // CU then construct a skeleton CU based upon it.
+ if (useSplitDwarf()) {
+ // This should be a unique identifier when we want to build .dwp files.
+ CU->addUInt(CU->getCUDie(), dwarf::DW_AT_GNU_dwo_id,
+ dwarf::DW_FORM_data8, 0);
+ // Now construct the skeleton CU associated.
+ constructSkeletonCU(CUNode);
+ }
}
// Tell MMI that we have debug info.
}
if (MI->getOperand(0).isReg() && MI->getOperand(1).isImm()) {
MachineLocation MLoc;
- MLoc.set(MI->getOperand(0).getReg(), MI->getOperand(1).getImm());
+ // TODO: Currently an offset of 0 in a DBG_VALUE means
+ // we need to generate a direct register value.
+ // There is no way to specify an indirect value with offset 0.
+ if (MI->getOperand(1).getImm() == 0)
+ MLoc.set(MI->getOperand(0).getReg());
+ else
+ MLoc.set(MI->getOperand(0).getReg(), MI->getOperand(1).getImm());
return DotDebugLocEntry(FLabel, SLabel, MLoc, Var);
}
if (MI->getOperand(0).isImm())
// Start the size with the size of abbreviation code.
Offset += MCAsmInfo::getULEB128Size(AbbrevNumber);
- const SmallVector<DIEValue*, 32> &Values = Die->getValues();
- const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev->getData();
+ const SmallVectorImpl<DIEValue*> &Values = Die->getValues();
+ const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev->getData();
// Size the DIE attribute values.
for (unsigned i = 0, N = Values.size(); i < N; ++i)
void DwarfUnits::computeSizeAndOffsets() {
// Offset from the beginning of debug info section.
unsigned AccuOffset = 0;
- for (SmallVector<CompileUnit *, 1>::iterator I = CUs.begin(),
+ for (SmallVectorImpl<CompileUnit *>::iterator I = CUs.begin(),
E = CUs.end(); I != E; ++I) {
(*I)->setDebugInfoOffset(AccuOffset);
unsigned Offset =
emitSectionSym(Asm, TLOF.getDwarfPubTypesSection());
DwarfStrSectionSym =
emitSectionSym(Asm, TLOF.getDwarfStrSection(), "info_string");
- if (useSplitDwarf())
+ if (useSplitDwarf()) {
DwarfStrDWOSectionSym =
emitSectionSym(Asm, TLOF.getDwarfStrDWOSection(), "skel_string");
+ DwarfAddrSectionSym =
+ emitSectionSym(Asm, TLOF.getDwarfAddrSection(), "addr_sec");
+ }
DwarfDebugRangeSectionSym = emitSectionSym(Asm, TLOF.getDwarfRangesSection(),
"debug_range");
dwarf::TagString(Abbrev->getTag()));
Asm->EmitULEB128(AbbrevNumber);
- const SmallVector<DIEValue*, 32> &Values = Die->getValues();
- const SmallVector<DIEAbbrevData, 8> &AbbrevData = Abbrev->getData();
+ const SmallVectorImpl<DIEValue*> &Values = Die->getValues();
+ const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev->getData();
// Emit the DIE attribute values.
for (unsigned i = 0, N = Values.size(); i < N; ++i) {
const MCSection *ASection,
const MCSymbol *ASectionSym) {
Asm->OutStreamer.SwitchSection(USection);
- for (SmallVector<CompileUnit *, 1>::iterator I = CUs.begin(),
+ for (SmallVectorImpl<CompileUnit *>::iterator I = CUs.begin(),
E = CUs.end(); I != E; ++I) {
CompileUnit *TheCU = *I;
DIE *Die = TheCU->getCUDie();
/// For a given compile unit DIE, returns offset from beginning of debug info.
unsigned DwarfUnits::getCUOffset(DIE *Die) {
- for (SmallVector<CompileUnit *, 1>::iterator I = CUs.begin(),
+ assert(Die->getTag() == dwarf::DW_TAG_compile_unit &&
+ "Input DIE should be compile unit in getCUOffset.");
+ for (SmallVectorImpl<CompileUnit *>::iterator I = CUs.begin(),
E = CUs.end(); I != E; ++I) {
CompileUnit *TheCU = *I;
if (TheCU->getCUDie() == Die)
return TheCU->getDebugInfoOffset();
}
- return 0;
+ llvm_unreachable("The compile unit DIE should belong to CUs in DwarfUnits.");
}
// Emit the debug info section.
if (DotDebugLocEntries.empty())
return;
- for (SmallVector<DotDebugLocEntry, 4>::iterator
+ for (SmallVectorImpl<DotDebugLocEntry>::iterator
I = DotDebugLocEntries.begin(), E = DotDebugLocEntries.end();
I != E; ++I) {
DotDebugLocEntry &Entry = *I;
unsigned char Size = Asm->getDataLayout().getPointerSize();
Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("debug_loc", 0));
unsigned index = 1;
- for (SmallVector<DotDebugLocEntry, 4>::iterator
+ for (SmallVectorImpl<DotDebugLocEntry>::iterator
I = DotDebugLocEntries.begin(), E = DotDebugLocEntries.end();
I != E; ++I, ++index) {
DotDebugLocEntry &Entry = *I;
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfRangesSection());
unsigned char Size = Asm->getDataLayout().getPointerSize();
- for (SmallVector<const MCSymbol *, 8>::iterator
+ for (SmallVectorImpl<const MCSymbol *>::iterator
I = DebugRangeSymbols.begin(), E = DebugRangeSymbols.end();
I != E; ++I) {
if (*I)
Asm->OutStreamer.AddComment("Address Size (in bytes)");
Asm->EmitInt8(Asm->getDataLayout().getPointerSize());
- for (SmallVector<const MDNode *, 4>::iterator I = InlinedSPNodes.begin(),
+ for (SmallVectorImpl<const MDNode *>::iterator I = InlinedSPNodes.begin(),
E = InlinedSPNodes.end(); I != E; ++I) {
const MDNode *Node = *I;
DenseMap<const MDNode *, SmallVector<InlineInfoLabels, 4> >::iterator II
= InlineInfo.find(Node);
- SmallVector<InlineInfoLabels, 4> &Labels = II->second;
+ SmallVectorImpl<InlineInfoLabels> &Labels = II->second;
DISubprogram SP(Node);
StringRef LName = SP.getLinkageName();
StringRef Name = SP.getName();
DwarfStrSectionSym);
Asm->EmitULEB128(Labels.size(), "Inline count");
- for (SmallVector<InlineInfoLabels, 4>::iterator LI = Labels.begin(),
+ for (SmallVectorImpl<InlineInfoLabels>::iterator LI = Labels.begin(),
LE = Labels.end(); LI != LE; ++LI) {
if (Asm->isVerbose()) Asm->OutStreamer.AddComment("DIE offset");
Asm->EmitInt32(LI->second->getOffset());
DIE *Die = new DIE(dwarf::DW_TAG_compile_unit);
CompileUnit *NewCU = new CompileUnit(GlobalCUIndexCount++,
- DIUnit.getLanguage(), Die, Asm,
+ DIUnit.getLanguage(), Die, N, Asm,
this, &SkeletonHolder);
NewCU->addLocalString(Die, dwarf::DW_AT_GNU_dwo_name,
// This should be a unique identifier when we want to build .dwp files.
NewCU->addUInt(Die, dwarf::DW_AT_GNU_dwo_id, dwarf::DW_FORM_data8, 0);
- // FIXME: The addr base should be relative for each compile unit, however,
- // this one is going to be 0 anyhow.
- NewCU->addUInt(Die, dwarf::DW_AT_GNU_addr_base, dwarf::DW_FORM_sec_offset, 0);
+ // Relocate to the beginning of the addr_base section, else 0 for the
+ // beginning of the one for this compile unit.
+ if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
+ NewCU->addLabel(Die, dwarf::DW_AT_GNU_addr_base, dwarf::DW_FORM_sec_offset,
+ DwarfAddrSectionSym);
+ else
+ NewCU->addUInt(Die, dwarf::DW_AT_GNU_addr_base,
+ dwarf::DW_FORM_sec_offset, 0);
// 2.17.1 requires that we use DW_AT_low_pc for a single entry point
// into an entity. We're using 0, or a NULL label for this.
// DW_AT_stmt_list is a offset of line number information for this
// compile unit in debug_line section.
+ // FIXME: Should handle multiple compile units.
if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
NewCU->addLabel(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_sec_offset,
DwarfLineSectionSym);
projects / oota-llvm.git / blobdiff