#include "DIE.h"
#include "DIEHash.h"
#include "DwarfAccelTable.h"
-#include "DwarfCompileUnit.h"
+#include "DwarfUnit.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/ADT/StringExtras.h"
cl::desc("Make an absence of debug location information explicit."),
cl::init(false));
-static cl::opt<bool>
-GenerateODRHash("generate-odr-hash", cl::Hidden,
- cl::desc("Add an ODR hash to external type DIEs."),
- cl::init(false));
-
static cl::opt<bool> GenerateCUHash("generate-cu-hash", cl::Hidden,
cl::desc("Add the CU hash as the dwo_id."),
cl::init(false));
cl::init(false));
namespace {
-enum DefaultOnOff {
- Default,
- Enable,
- Disable
-};
+enum DefaultOnOff { Default, Enable, Disable };
}
static cl::opt<DefaultOnOff>
static cl::opt<DefaultOnOff>
SplitDwarf("split-dwarf", cl::Hidden,
- cl::desc("Output prototype dwarf split debug info."),
+ cl::desc("Output DWARF5 split debug info."),
cl::values(clEnumVal(Default, "Default for platform"),
clEnumVal(Enable, "Enabled"),
clEnumVal(Disable, "Disabled"), clEnumValEnd),
clEnumVal(Disable, "Disabled"), clEnumValEnd),
cl::init(Default));
+static cl::opt<unsigned>
+DwarfVersionNumber("dwarf-version", cl::Hidden,
+ cl::desc("Generate DWARF for dwarf version."), cl::init(0));
+
+static cl::opt<bool>
+DwarfCURanges("generate-dwarf-cu-ranges", cl::Hidden,
+ cl::desc("Generate DW_AT_ranges for compile units"),
+ cl::init(false));
+
static const char *const DWARFGroupName = "DWARF Emission";
static const char *const DbgTimerName = "DWARF Debug Writer";
//===----------------------------------------------------------------------===//
-// Configuration values for initial hash set sizes (log2).
-//
-static const unsigned InitAbbreviationsSetSize = 9; // log2(512)
-
namespace llvm {
/// resolve - Look in the DwarfDebug map for the MDNode that
}
DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
- : Asm(A), MMI(Asm->MMI), FirstCU(0),
- AbbreviationsSet(InitAbbreviationsSetSize),
- SourceIdMap(DIEValueAllocator), PrevLabel(NULL), GlobalCUIndexCount(0),
- InfoHolder(A, &AbbreviationsSet, Abbreviations, "info_string",
- DIEValueAllocator),
- SkeletonAbbrevSet(InitAbbreviationsSetSize),
- SkeletonHolder(A, &SkeletonAbbrevSet, SkeletonAbbrevs, "skel_string",
- DIEValueAllocator) {
-
- DwarfInfoSectionSym = DwarfAbbrevSectionSym = 0;
- DwarfStrSectionSym = TextSectionSym = 0;
+ : Asm(A), MMI(Asm->MMI), FirstCU(0), SourceIdMap(DIEValueAllocator),
+ PrevLabel(NULL), GlobalRangeCount(0),
+ InfoHolder(A, "info_string", DIEValueAllocator), HasCURanges(false),
+ UsedNonDefaultText(false),
+ SkeletonHolder(A, "skel_string", DIEValueAllocator) {
+
+ DwarfInfoSectionSym = DwarfAbbrevSectionSym = DwarfStrSectionSym = 0;
DwarfDebugRangeSectionSym = DwarfDebugLocSectionSym = DwarfLineSectionSym = 0;
DwarfAddrSectionSym = 0;
DwarfAbbrevDWOSectionSym = DwarfStrDWOSectionSym = 0;
FunctionBeginSym = FunctionEndSym = 0;
+ CurFn = 0;
+ CurMI = 0;
// Turn on accelerator tables for Darwin by default, pubnames by
// default for non-Darwin, and handle split dwarf.
else
HasDwarfPubSections = DwarfPubSections == Enable;
- DwarfVersion = getDwarfVersionFromModule(MMI->getModule());
+ DwarfVersion = DwarfVersionNumber
+ ? DwarfVersionNumber
+ : getDwarfVersionFromModule(MMI->getModule());
{
NamedRegionTimer T(DbgTimerName, DWARFGroupName, TimePassesIsEnabled);
return TmpSym;
}
-MCSymbol *DwarfUnits::getStringPoolSym() {
+DwarfFile::~DwarfFile() {
+ for (SmallVectorImpl<DwarfUnit *>::iterator I = CUs.begin(), E = CUs.end();
+ I != E; ++I)
+ delete *I;
+}
+
+MCSymbol *DwarfFile::getStringPoolSym() {
return Asm->GetTempSymbol(StringPref);
}
-MCSymbol *DwarfUnits::getStringPoolEntry(StringRef Str) {
+MCSymbol *DwarfFile::getStringPoolEntry(StringRef Str) {
std::pair<MCSymbol *, unsigned> &Entry =
StringPool.GetOrCreateValue(Str).getValue();
if (Entry.first)
return Entry.first = Asm->GetTempSymbol(StringPref, Entry.second);
}
-unsigned DwarfUnits::getStringPoolIndex(StringRef Str) {
+unsigned DwarfFile::getStringPoolIndex(StringRef Str) {
std::pair<MCSymbol *, unsigned> &Entry =
StringPool.GetOrCreateValue(Str).getValue();
if (Entry.first)
return Entry.second;
}
-unsigned DwarfUnits::getAddrPoolIndex(const MCSymbol *Sym) {
+unsigned DwarfFile::getAddrPoolIndex(const MCSymbol *Sym) {
return getAddrPoolIndex(MCSymbolRefExpr::Create(Sym, Asm->OutContext));
}
-unsigned DwarfUnits::getAddrPoolIndex(const MCExpr *Sym) {
+unsigned DwarfFile::getAddrPoolIndex(const MCExpr *Sym) {
std::pair<DenseMap<const MCExpr *, unsigned>::iterator, bool> P =
AddressPool.insert(std::make_pair(Sym, NextAddrPoolNumber));
if (P.second)
// Define a unique number for the abbreviation.
//
-void DwarfUnits::assignAbbrevNumber(DIEAbbrev &Abbrev) {
+void DwarfFile::assignAbbrevNumber(DIEAbbrev &Abbrev) {
// Check the set for priors.
- DIEAbbrev *InSet = AbbreviationsSet->GetOrInsertNode(&Abbrev);
+ DIEAbbrev *InSet = AbbreviationsSet.GetOrInsertNode(&Abbrev);
// If it's newly added.
if (InSet == &Abbrev) {
// TODO: Determine whether or not we should add names for programs
// that do not have a DW_AT_name or DW_AT_linkage_name field - this
// is only slightly different than the lookup of non-standard ObjC names.
-static void addSubprogramNames(CompileUnit *TheCU, DISubprogram SP, DIE *Die) {
+static void addSubprogramNames(DwarfUnit *TheU, DISubprogram SP, DIE *Die) {
if (!SP.isDefinition())
return;
- TheCU->addAccelName(SP.getName(), Die);
+ TheU->addAccelName(SP.getName(), Die);
// If the linkage name is different than the name, go ahead and output
// that as well into the name table.
if (SP.getLinkageName() != "" && SP.getName() != SP.getLinkageName())
- TheCU->addAccelName(SP.getLinkageName(), Die);
+ TheU->addAccelName(SP.getLinkageName(), Die);
// If this is an Objective-C selector name add it to the ObjC accelerator
// too.
if (isObjCClass(SP.getName())) {
StringRef Class, Category;
getObjCClassCategory(SP.getName(), Class, Category);
- TheCU->addAccelObjC(Class, Die);
+ TheU->addAccelObjC(Class, Die);
if (Category != "")
- TheCU->addAccelObjC(Category, Die);
+ TheU->addAccelObjC(Category, Die);
// Also add the base method name to the name table.
- TheCU->addAccelName(getObjCMethodName(SP.getName()), Die);
+ TheU->addAccelName(getObjCMethodName(SP.getName()), Die);
}
}
// Find DIE for the given subprogram and attach appropriate DW_AT_low_pc
// and DW_AT_high_pc attributes. If there are global variables in this
// scope then create and insert DIEs for these variables.
-DIE *DwarfDebug::updateSubprogramScopeDIE(CompileUnit *SPCU, DISubprogram SP) {
+DIE *DwarfDebug::updateSubprogramScopeDIE(DwarfCompileUnit *SPCU,
+ DISubprogram SP) {
DIE *SPDie = SPCU->getDIE(SP);
assert(SPDie && "Unable to find subprogram DIE!");
// concrete DIE twice.
if (DIE *AbsSPDIE = AbstractSPDies.lookup(SP)) {
// Pick up abstract subprogram DIE.
- SPDie = SPCU->createAndAddDIE(dwarf::DW_TAG_subprogram, *SPCU->getCUDie());
+ SPDie =
+ SPCU->createAndAddDIE(dwarf::DW_TAG_subprogram, *SPCU->getUnitDie());
SPCU->addDIEEntry(SPDie, dwarf::DW_AT_abstract_origin, AbsSPDIE);
} else {
DISubprogram SPDecl = SP.getFunctionDeclaration();
SPCU->addDIEEntry(SPDie, dwarf::DW_AT_object_pointer, Arg);
}
DIE *SPDeclDie = SPDie;
- SPDie =
- SPCU->createAndAddDIE(dwarf::DW_TAG_subprogram, *SPCU->getCUDie());
+ SPDie = SPCU->createAndAddDIE(dwarf::DW_TAG_subprogram,
+ *SPCU->getUnitDie());
SPCU->addDIEEntry(SPDie, dwarf::DW_AT_specification, SPDeclDie);
}
}
}
- SPCU->addLabelAddress(
- SPDie, dwarf::DW_AT_low_pc,
- Asm->GetTempSymbol("func_begin", Asm->getFunctionNumber()));
- SPCU->addLabelAddress(
- SPDie, dwarf::DW_AT_high_pc,
- Asm->GetTempSymbol("func_end", Asm->getFunctionNumber()));
+ SPCU->addLabelAddress(SPDie, dwarf::DW_AT_low_pc, FunctionBeginSym);
+ SPCU->addLabelAddress(SPDie, dwarf::DW_AT_high_pc, FunctionEndSym);
+
const TargetRegisterInfo *RI = Asm->TM.getRegisterInfo();
MachineLocation Location(RI->getFrameRegister(*Asm->MF));
SPCU->addAddress(SPDie, dwarf::DW_AT_frame_base, Location);
return !End;
}
+static void addSectionLabel(AsmPrinter *Asm, DwarfUnit *U, DIE *D,
+ dwarf::Attribute A, const MCSymbol *L,
+ const MCSymbol *Sec) {
+ if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
+ U->addSectionLabel(D, A, L);
+ else
+ U->addSectionDelta(D, A, L, Sec);
+}
+
+void DwarfDebug::addScopeRangeList(DwarfCompileUnit *TheCU, DIE *ScopeDIE,
+ const SmallVectorImpl<InsnRange> &Range) {
+ // Emit offset in .debug_range as a relocatable label. emitDIE will handle
+ // emitting it appropriately.
+ MCSymbol *RangeSym = Asm->GetTempSymbol("debug_ranges", GlobalRangeCount++);
+ addSectionLabel(Asm, TheCU, ScopeDIE, dwarf::DW_AT_ranges, RangeSym,
+ DwarfDebugRangeSectionSym);
+
+ RangeSpanList List(RangeSym);
+ for (SmallVectorImpl<InsnRange>::const_iterator RI = Range.begin(),
+ RE = Range.end();
+ RI != RE; ++RI) {
+ RangeSpan Span(getLabelBeforeInsn(RI->first),
+ getLabelAfterInsn(RI->second));
+ List.addRange(llvm_move(Span));
+ }
+
+ // Add the range list to the set of ranges to be emitted.
+ TheCU->addRangeList(llvm_move(List));
+}
+
// Construct new DW_TAG_lexical_block for this scope and attach
// DW_AT_low_pc/DW_AT_high_pc labels.
-DIE *DwarfDebug::constructLexicalScopeDIE(CompileUnit *TheCU,
+DIE *DwarfDebug::constructLexicalScopeDIE(DwarfCompileUnit *TheCU,
LexicalScope *Scope) {
if (isLexicalScopeDIENull(Scope))
return 0;
if (Scope->isAbstractScope())
return ScopeDIE;
- const SmallVectorImpl<InsnRange> &Ranges = Scope->getRanges();
- // If we have multiple ranges, emit them into the range section.
- if (Ranges.size() > 1) {
- // .debug_range section has not been laid out yet. Emit offset in
- // .debug_range as a uint, size 4, for now. emitDIE will handle
- // DW_AT_ranges appropriately.
- TheCU->addUInt(ScopeDIE, dwarf::DW_AT_ranges, dwarf::DW_FORM_data4,
- DebugRangeSymbols.size() *
- Asm->getDataLayout().getPointerSize());
- for (SmallVectorImpl<InsnRange>::const_iterator RI = Ranges.begin(),
- RE = Ranges.end();
- RI != RE; ++RI) {
- DebugRangeSymbols.push_back(getLabelBeforeInsn(RI->first));
- DebugRangeSymbols.push_back(getLabelAfterInsn(RI->second));
- }
+ const SmallVectorImpl<InsnRange> &ScopeRanges = Scope->getRanges();
- // Terminate the range list.
- DebugRangeSymbols.push_back(NULL);
- DebugRangeSymbols.push_back(NULL);
+ // If we have multiple ranges, emit them into the range section.
+ if (ScopeRanges.size() > 1) {
+ addScopeRangeList(TheCU, ScopeDIE, ScopeRanges);
return ScopeDIE;
}
// Construct the address range for this DIE.
- SmallVectorImpl<InsnRange>::const_iterator RI = Ranges.begin();
+ SmallVectorImpl<InsnRange>::const_iterator RI = ScopeRanges.begin();
MCSymbol *Start = getLabelBeforeInsn(RI->first);
MCSymbol *End = getLabelAfterInsn(RI->second);
assert(End && "End label should not be null!");
// This scope represents inlined body of a function. Construct DIE to
// represent this concrete inlined copy of the function.
-DIE *DwarfDebug::constructInlinedScopeDIE(CompileUnit *TheCU,
+DIE *DwarfDebug::constructInlinedScopeDIE(DwarfCompileUnit *TheCU,
LexicalScope *Scope) {
- const SmallVectorImpl<InsnRange> &Ranges = Scope->getRanges();
- assert(Ranges.empty() == false &&
+ const SmallVectorImpl<InsnRange> &ScopeRanges = Scope->getRanges();
+ assert(!ScopeRanges.empty() &&
"LexicalScope does not have instruction markers!");
if (!Scope->getScopeNode())
DIE *ScopeDIE = new DIE(dwarf::DW_TAG_inlined_subroutine);
TheCU->addDIEEntry(ScopeDIE, dwarf::DW_AT_abstract_origin, OriginDIE);
- if (Ranges.size() > 1) {
- // .debug_range section has not been laid out yet. Emit offset in
- // .debug_range as a uint, size 4, for now. emitDIE will handle
- // DW_AT_ranges appropriately.
- TheCU->addUInt(ScopeDIE, dwarf::DW_AT_ranges, dwarf::DW_FORM_data4,
- DebugRangeSymbols.size() *
- Asm->getDataLayout().getPointerSize());
- for (SmallVectorImpl<InsnRange>::const_iterator RI = Ranges.begin(),
- RE = Ranges.end();
- RI != RE; ++RI) {
- DebugRangeSymbols.push_back(getLabelBeforeInsn(RI->first));
- DebugRangeSymbols.push_back(getLabelAfterInsn(RI->second));
- }
- DebugRangeSymbols.push_back(NULL);
- DebugRangeSymbols.push_back(NULL);
- } else {
- SmallVectorImpl<InsnRange>::const_iterator RI = Ranges.begin();
+ // If we have multiple ranges, emit them into the range section.
+ if (ScopeRanges.size() > 1)
+ addScopeRangeList(TheCU, ScopeDIE, ScopeRanges);
+ else {
+ SmallVectorImpl<InsnRange>::const_iterator RI = ScopeRanges.begin();
MCSymbol *StartLabel = getLabelBeforeInsn(RI->first);
MCSymbol *EndLabel = getLabelAfterInsn(RI->second);
return ScopeDIE;
}
-DIE *DwarfDebug::createScopeChildrenDIE(CompileUnit *TheCU, LexicalScope *Scope,
+DIE *DwarfDebug::createScopeChildrenDIE(DwarfCompileUnit *TheCU,
+ LexicalScope *Scope,
SmallVectorImpl<DIE *> &Children) {
DIE *ObjectPointer = NULL;
}
// Construct a DIE for this scope.
-DIE *DwarfDebug::constructScopeDIE(CompileUnit *TheCU, LexicalScope *Scope) {
+DIE *DwarfDebug::constructScopeDIE(DwarfCompileUnit *TheCU,
+ LexicalScope *Scope) {
if (!Scope || !Scope->getScopeNode())
return NULL;
if (DS.isSubprogram() && ObjectPointer != NULL)
TheCU->addDIEEntry(ScopeDIE, dwarf::DW_AT_object_pointer, ObjectPointer);
- if (DS.isSubprogram())
- TheCU->addPubTypes(DISubprogram(DS));
-
return ScopeDIE;
}
return SrcId;
}
-// Create new CompileUnit for the given metadata node with tag
+void DwarfDebug::addGnuPubAttributes(DwarfUnit *U, DIE *D) const {
+ if (!GenerateGnuPubSections)
+ return;
+
+ addSectionLabel(Asm, U, D, dwarf::DW_AT_GNU_pubnames,
+ Asm->GetTempSymbol("gnu_pubnames", U->getUniqueID()),
+ DwarfGnuPubNamesSectionSym);
+
+ addSectionLabel(Asm, U, D, dwarf::DW_AT_GNU_pubtypes,
+ Asm->GetTempSymbol("gnu_pubtypes", U->getUniqueID()),
+ DwarfGnuPubTypesSectionSym);
+}
+
+// Create new DwarfCompileUnit for the given metadata node with tag
// DW_TAG_compile_unit.
-CompileUnit *DwarfDebug::constructCompileUnit(DICompileUnit DIUnit) {
+DwarfCompileUnit *DwarfDebug::constructDwarfCompileUnit(DICompileUnit DIUnit) {
StringRef FN = DIUnit.getFilename();
CompilationDir = DIUnit.getDirectory();
DIE *Die = new DIE(dwarf::DW_TAG_compile_unit);
- CompileUnit *NewCU = new CompileUnit(GlobalCUIndexCount++, Die, DIUnit, Asm,
- this, &InfoHolder);
+ DwarfCompileUnit *NewCU = new DwarfCompileUnit(
+ InfoHolder.getUnits().size(), Die, DIUnit, Asm, this, &InfoHolder);
+ InfoHolder.addUnit(NewCU);
FileIDCUMap[NewCU->getUniqueID()] = 0;
// Call this to emit a .file directive if it wasn't emitted for the source
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. 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());
// 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_sec_offset,
- UseTheFirstCU ? Asm->GetTempSymbol("section_line")
- : LineTableStartSym);
+ NewCU->addSectionLabel(Die, dwarf::DW_AT_stmt_list,
+ UseTheFirstCU ? Asm->GetTempSymbol("section_line")
+ : LineTableStartSym);
else if (UseTheFirstCU)
- NewCU->addUInt(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4, 0);
+ NewCU->addSectionOffset(Die, dwarf::DW_AT_stmt_list, 0);
else
- NewCU->addDelta(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_data4,
- LineTableStartSym, DwarfLineSectionSym);
+ NewCU->addSectionDelta(Die, dwarf::DW_AT_stmt_list, LineTableStartSym,
+ DwarfLineSectionSym);
// 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 (!CompilationDir.empty())
NewCU->addString(Die, dwarf::DW_AT_comp_dir, CompilationDir);
- // Flags to let the linker know we have emitted new style pubnames. Only
- // emit it here if we don't have a skeleton CU for split dwarf.
- if (GenerateGnuPubSections) {
- if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
- NewCU->addLabel(
- Die, dwarf::DW_AT_GNU_pubnames, dwarf::DW_FORM_sec_offset,
- Asm->GetTempSymbol("gnu_pubnames", NewCU->getUniqueID()));
- else
- NewCU->addDelta(
- Die, dwarf::DW_AT_GNU_pubnames, dwarf::DW_FORM_data4,
- Asm->GetTempSymbol("gnu_pubnames", NewCU->getUniqueID()),
- DwarfGnuPubNamesSectionSym);
-
- if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
- NewCU->addLabel(
- Die, dwarf::DW_AT_GNU_pubtypes, dwarf::DW_FORM_sec_offset,
- Asm->GetTempSymbol("gnu_pubtypes", NewCU->getUniqueID()));
- else
- NewCU->addDelta(
- Die, dwarf::DW_AT_GNU_pubtypes, dwarf::DW_FORM_data4,
- Asm->GetTempSymbol("gnu_pubtypes", NewCU->getUniqueID()),
- DwarfGnuPubTypesSectionSym);
- }
+ addGnuPubAttributes(NewCU, Die);
}
if (DIUnit.isOptimized())
if (!FirstCU)
FirstCU = NewCU;
- InfoHolder.addUnit(NewCU);
+ if (useSplitDwarf()) {
+ NewCU->initSection(Asm->getObjFileLowering().getDwarfInfoDWOSection(),
+ DwarfInfoDWOSectionSym);
+ NewCU->setSkeleton(constructSkeletonCU(NewCU));
+ } else
+ NewCU->initSection(Asm->getObjFileLowering().getDwarfInfoSection(),
+ DwarfInfoSectionSym);
CUMap.insert(std::make_pair(DIUnit, NewCU));
CUDieMap.insert(std::make_pair(Die, NewCU));
}
// Construct subprogram DIE.
-void DwarfDebug::constructSubprogramDIE(CompileUnit *TheCU, const MDNode *N) {
+void DwarfDebug::constructSubprogramDIE(DwarfCompileUnit *TheCU,
+ const MDNode *N) {
// FIXME: We should only call this routine once, however, during LTO if a
// program is defined in multiple CUs we could end up calling it out of
// beginModule as we walk the CUs.
- CompileUnit *&CURef = SPMap[N];
+ DwarfCompileUnit *&CURef = SPMap[N];
if (CURef)
return;
CURef = TheCU;
TheCU->addGlobalName(SP.getName(), SubprogramDie, resolve(SP.getContext()));
}
-void DwarfDebug::constructImportedEntityDIE(CompileUnit *TheCU,
+void DwarfDebug::constructImportedEntityDIE(DwarfCompileUnit *TheCU,
const MDNode *N) {
DIImportedEntity Module(N);
- if (!Module.Verify())
- return;
+ assert(Module.Verify());
if (DIE *D = TheCU->getOrCreateContextDIE(Module.getContext()))
constructImportedEntityDIE(TheCU, Module, D);
}
-void DwarfDebug::constructImportedEntityDIE(CompileUnit *TheCU, const MDNode *N,
- DIE *Context) {
+void DwarfDebug::constructImportedEntityDIE(DwarfCompileUnit *TheCU,
+ const MDNode *N, DIE *Context) {
DIImportedEntity Module(N);
- if (!Module.Verify())
- return;
+ assert(Module.Verify());
return constructImportedEntityDIE(TheCU, Module, Context);
}
-void DwarfDebug::constructImportedEntityDIE(CompileUnit *TheCU,
+void DwarfDebug::constructImportedEntityDIE(DwarfCompileUnit *TheCU,
const DIImportedEntity &Module,
DIE *Context) {
assert(Module.Verify() &&
for (unsigned i = 0, e = CU_Nodes->getNumOperands(); i != e; ++i) {
DICompileUnit CUNode(CU_Nodes->getOperand(i));
- CompileUnit *CU = constructCompileUnit(CUNode);
+ DwarfCompileUnit *CU = constructDwarfCompileUnit(CUNode);
DIArray ImportedEntities = CUNode.getImportedEntities();
for (unsigned i = 0, e = ImportedEntities.getNumElements(); i != e; ++i)
ScopesWithImportedEntities.push_back(std::make_pair(
continue;
// Construct subprogram DIE and add variables DIEs.
- CompileUnit *SPCU = CUMap.lookup(TheCU);
+ DwarfCompileUnit *SPCU =
+ static_cast<DwarfCompileUnit *>(CUMap.lookup(TheCU));
assert(SPCU && "Unable to find Compile Unit!");
// FIXME: See the comment in constructSubprogramDIE about duplicate
// subprogram DIEs.
}
}
-// Type Signature [7.27] and ODR Hash code.
-
-/// \brief Grabs the string in whichever attribute is passed in and returns
-/// a reference to it. Returns "" if the attribute doesn't exist.
-static StringRef getDIEStringAttr(DIE *Die, unsigned Attr) {
- DIEValue *V = Die->findAttribute(Attr);
-
- if (DIEString *S = dyn_cast_or_null<DIEString>(V))
- return S->getString();
-
- return StringRef("");
-}
-
-/// Return true if the current DIE is contained within an anonymous namespace.
-static bool isContainedInAnonNamespace(DIE *Die) {
- DIE *Parent = Die->getParent();
-
- while (Parent) {
- if (Parent->getTag() == dwarf::DW_TAG_namespace &&
- getDIEStringAttr(Parent, dwarf::DW_AT_name) == "")
- return true;
- Parent = Parent->getParent();
- }
-
- return false;
-}
-
-/// Test if the current CU language is C++ and that we have
-/// a named type that is not contained in an anonymous namespace.
-static bool shouldAddODRHash(CompileUnit *CU, DIE *Die) {
- return CU->getLanguage() == dwarf::DW_LANG_C_plus_plus &&
- getDIEStringAttr(Die, dwarf::DW_AT_name) != "" &&
- !isContainedInAnonNamespace(Die);
-}
-
void DwarfDebug::finalizeModuleInfo() {
// Collect info for variables that were optimized out.
collectDeadVariables();
// Attach DW_AT_inline attribute with inlined subprogram DIEs.
computeInlinedDIEs();
- // Handle anything that needs to be done on a per-cu basis.
- for (DenseMap<const MDNode *, CompileUnit *>::iterator CUI = CUMap.begin(),
- CUE = CUMap.end();
- CUI != CUE; ++CUI) {
- CompileUnit *TheCU = CUI->second;
+ // Handle anything that needs to be done on a per-unit basis after
+ // all other generation.
+ for (SmallVectorImpl<DwarfUnit *>::const_iterator I = getUnits().begin(),
+ E = getUnits().end();
+ I != E; ++I) {
+ DwarfUnit *TheU = *I;
// Emit DW_AT_containing_type attribute to connect types with their
// vtable holding type.
- TheCU->constructContainingTypeDIEs();
-
- // 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()) {
- uint64_t ID = 0;
- if (GenerateCUHash) {
- DIEHash CUHash;
- ID = CUHash.computeCUSignature(*TheCU->getCUDie());
+ TheU->constructContainingTypeDIEs();
+
+ // Add CU specific attributes if we need to add any.
+ if (TheU->getUnitDie()->getTag() == dwarf::DW_TAG_compile_unit) {
+ // If we're splitting the dwarf out now that we've got the entire
+ // CU then add the dwo id to it.
+ DwarfCompileUnit *SkCU =
+ static_cast<DwarfCompileUnit *>(TheU->getSkeleton());
+ if (useSplitDwarf()) {
+ // This should be a unique identifier when we want to build .dwp files.
+ uint64_t ID = 0;
+ if (GenerateCUHash) {
+ DIEHash CUHash;
+ ID = CUHash.computeCUSignature(*TheU->getUnitDie());
+ }
+ TheU->addUInt(TheU->getUnitDie(), dwarf::DW_AT_GNU_dwo_id,
+ dwarf::DW_FORM_data8, ID);
+ SkCU->addUInt(SkCU->getUnitDie(), dwarf::DW_AT_GNU_dwo_id,
+ dwarf::DW_FORM_data8, ID);
}
- // This should be a unique identifier when we want to build .dwp files.
- TheCU->addUInt(TheCU->getCUDie(), dwarf::DW_AT_GNU_dwo_id,
- dwarf::DW_FORM_data8, ID);
- // Now construct the skeleton CU associated.
- CompileUnit *SkCU = constructSkeletonCU(TheCU);
- // This should be a unique identifier when we want to build .dwp files.
- SkCU->addUInt(SkCU->getCUDie(), dwarf::DW_AT_GNU_dwo_id,
- dwarf::DW_FORM_data8, ID);
+
+ // If we have code split among multiple sections or we've requested
+ // it then emit a DW_AT_ranges attribute on the unit that will remain
+ // in the .o file, otherwise add a DW_AT_low_pc.
+ // FIXME: Also add a high pc if we can.
+ // FIXME: We should use ranges if we have multiple compile units or
+ // allow reordering of code ala .subsections_via_symbols in mach-o.
+ DwarfCompileUnit *U = SkCU ? SkCU : static_cast<DwarfCompileUnit *>(TheU);
+ if (useCURanges() && TheU->getRanges().size()) {
+ addSectionLabel(Asm, U, U->getUnitDie(), dwarf::DW_AT_ranges,
+ Asm->GetTempSymbol("cu_ranges", U->getUniqueID()),
+ DwarfDebugRangeSectionSym);
+
+ // A DW_AT_low_pc attribute may also be specified in combination with
+ // DW_AT_ranges to specify the default base address for use in location
+ // lists (see Section 2.6.2) and range lists (see Section 2.17.3).
+ U->addUInt(U->getUnitDie(), dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
+ 0);
+ } else
+ U->addUInt(U->getUnitDie(), dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr,
+ 0);
}
}
if (Section) {
// We can't call MCSection::getLabelEndName, as it's only safe to do so
// if we know the section name up-front. For user-created sections, the
- // resulting
- // label may not be valid to use as a label. (section names can use a
- // greater
- // set of characters on some systems)
+ // resulting label may not be valid to use as a label. (section names can
+ // use a greater set of characters on some systems)
Sym = Asm->GetTempSymbol("debug_end", ID);
Asm->OutStreamer.SwitchSection(Section);
Asm->OutStreamer.EmitLabel(Sym);
// Insert a final terminator.
SectionMap[Section].push_back(SymbolCU(NULL, Sym));
}
+
+ // For now only turn on CU ranges if we've explicitly asked for it,
+ // we have -ffunction-sections enabled, we've emitted a function
+ // into a unique section, or we're using LTO. If we're using LTO then
+ // we can't know that any particular function in the module is correlated
+ // to a particular CU and so we need to be conservative. At this point all
+ // sections should be finalized except for dwarf sections.
+ HasCURanges = DwarfCURanges || UsedNonDefaultText || (CUMap.size() > 1) ||
+ TargetMachine::getFunctionSections();
}
// Emit all Dwarf sections that should come after the content.
void DwarfDebug::endModule() {
+ assert(CurFn == 0);
+ assert(CurMI == 0);
if (!FirstCU)
return;
// Emit info into a debug ranges section.
emitDebugRanges();
- // Emit info into a debug macinfo section.
- emitDebugMacInfo();
-
if (useSplitDwarf()) {
emitDebugStrDWO();
emitDebugInfoDWO();
// clean up.
SPMap.clear();
- for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
- E = CUMap.end();
- I != E; ++I)
- delete I->second;
-
- for (SmallVectorImpl<CompileUnit *>::iterator I = SkeletonCUs.begin(),
- E = SkeletonCUs.end();
- I != E; ++I)
- delete *I;
// Reset these for the next Module if we have one.
FirstCU = NULL;
}
// If Var is a current function argument then add it to CurrentFnArguments list.
-bool DwarfDebug::addCurrentFnArgument(const MachineFunction *MF,
- DbgVariable *Var, LexicalScope *Scope) {
+bool DwarfDebug::addCurrentFnArgument(DbgVariable *Var, LexicalScope *Scope) {
if (!LScopes.isCurrentFunctionScope(Scope))
return false;
DIVariable DV = Var->getVariable();
size_t Size = CurrentFnArguments.size();
if (Size == 0)
- CurrentFnArguments.resize(MF->getFunction()->arg_size());
+ CurrentFnArguments.resize(CurFn->getFunction()->arg_size());
// llvm::Function argument size is not good indicator of how many
// arguments does the function have at source level.
if (ArgNo > Size)
// Collect variable information from side table maintained by MMI.
void DwarfDebug::collectVariableInfoFromMMITable(
- const MachineFunction *MF, SmallPtrSet<const MDNode *, 16> &Processed) {
+ SmallPtrSet<const MDNode *, 16> &Processed) {
MachineModuleInfo::VariableDbgInfoMapTy &VMap = MMI->getVariableDbgInfo();
for (MachineModuleInfo::VariableDbgInfoMapTy::iterator VI = VMap.begin(),
VE = VMap.end();
DbgVariable *AbsDbgVariable = findAbstractVariable(DV, VP.second);
DbgVariable *RegVar = new DbgVariable(DV, AbsDbgVariable, this);
RegVar->setFrameIndex(VP.first);
- if (!addCurrentFnArgument(MF, RegVar, Scope))
+ if (!addCurrentFnArgument(RegVar, Scope))
addScopeVariable(Scope, RegVar);
if (AbsDbgVariable)
AbsDbgVariable->setFrameIndex(VP.first);
// Find variables for each lexical scope.
void
-DwarfDebug::collectVariableInfo(const MachineFunction *MF,
- SmallPtrSet<const MDNode *, 16> &Processed) {
+DwarfDebug::collectVariableInfo(SmallPtrSet<const MDNode *, 16> &Processed) {
// Grab the variable info that was squirreled away in the MMI side-table.
- collectVariableInfoFromMMITable(MF, Processed);
+ collectVariableInfoFromMMITable(Processed);
for (SmallVectorImpl<const MDNode *>::const_iterator
UVI = UserVariables.begin(),
DIVariable DV(Var);
LexicalScope *Scope = NULL;
if (DV.getTag() == dwarf::DW_TAG_arg_variable &&
- DISubprogram(DV.getContext()).describes(MF->getFunction()))
+ DISubprogram(DV.getContext()).describes(CurFn->getFunction()))
Scope = LScopes.getCurrentFunctionScope();
else if (MDNode *IA = DV.getInlinedAt())
Scope = LScopes.findInlinedScope(DebugLoc::getFromDILocation(IA));
assert(MInsn->isDebugValue() && "History must begin with debug value");
DbgVariable *AbsVar = findAbstractVariable(DV, MInsn->getDebugLoc());
DbgVariable *RegVar = new DbgVariable(DV, AbsVar, this);
- if (!addCurrentFnArgument(MF, RegVar, Scope))
+ if (!addCurrentFnArgument(RegVar, Scope))
addScopeVariable(Scope, RegVar);
if (AbsVar)
AbsVar->setMInsn(MInsn);
// Process beginning of an instruction.
void DwarfDebug::beginInstruction(const MachineInstr *MI) {
+ assert(CurMI == 0);
+ CurMI = MI;
// Check if source location changes, but ignore DBG_VALUE locations.
if (!MI->isDebugValue()) {
DebugLoc DL = MI->getDebugLoc();
}
// Process end of an instruction.
-void DwarfDebug::endInstruction(const MachineInstr *MI) {
+void DwarfDebug::endInstruction() {
+ assert(CurMI != 0);
// Don't create a new label after DBG_VALUE instructions.
// They don't generate code.
- if (!MI->isDebugValue())
+ if (!CurMI->isDebugValue())
PrevLabel = 0;
DenseMap<const MachineInstr *, MCSymbol *>::iterator I =
- LabelsAfterInsn.find(MI);
+ LabelsAfterInsn.find(CurMI);
+ CurMI = 0;
// No label needed.
if (I == LabelsAfterInsn.end())
}
}
-// Get MDNode for DebugLoc's scope.
-static MDNode *getScopeNode(DebugLoc DL, const LLVMContext &Ctx) {
- if (MDNode *InlinedAt = DL.getInlinedAt(Ctx))
- return getScopeNode(DebugLoc::getFromDILocation(InlinedAt), Ctx);
- return DL.getScope(Ctx);
-}
-
-// Walk up the scope chain of given debug loc and find line number info
-// for the function.
-static DebugLoc getFnDebugLoc(DebugLoc DL, const LLVMContext &Ctx) {
- const MDNode *Scope = getScopeNode(DL, Ctx);
- DISubprogram SP = getDISubprogram(Scope);
- if (SP.isSubprogram()) {
- // Check for number of operands since the compatibility is
- // cheap here.
- if (SP->getNumOperands() > 19)
- return DebugLoc::get(SP.getScopeLineNumber(), 0, SP);
- else
- return DebugLoc::get(SP.getLineNumber(), 0, SP);
- }
-
- return DebugLoc();
-}
-
// Gather pre-function debug information. Assumes being called immediately
// after the function entry point has been emitted.
void DwarfDebug::beginFunction(const MachineFunction *MF) {
+ CurFn = MF;
// If there's no debug info for the function we're not going to do anything.
if (!MMI->hasDebugInfo())
// Make sure that each lexical scope will have a begin/end label.
identifyScopeMarkers();
- // Set DwarfCompileUnitID in MCContext to the Compile Unit this function
+ // Set DwarfDwarfCompileUnitID in MCContext to the Compile Unit this function
// belongs to so that we add to the correct per-cu line table in the
// non-asm case.
LexicalScope *FnScope = LScopes.getCurrentFunctionScope();
- CompileUnit *TheCU = SPMap.lookup(FnScope->getScopeNode());
+ DwarfCompileUnit *TheCU = SPMap.lookup(FnScope->getScopeNode());
assert(TheCU && "Unable to find compile unit!");
if (Asm->TM.hasMCUseLoc() && Asm->OutStreamer.hasRawTextSupport())
// Use a single line table if we are using .loc and generating assembly.
else
Asm->OutStreamer.getContext().setDwarfCompileUnitID(TheCU->getUniqueID());
+ // Check the current section against the standard text section. If different
+ // keep track so that we will know when we're emitting functions into multiple
+ // sections.
+ if (Asm->getObjFileLowering().getTextSection() != Asm->getCurrentSection())
+ UsedNonDefaultText = true;
+
// Emit a label for the function so that we have a beginning address.
FunctionBeginSym = Asm->GetTempSymbol("func_begin", Asm->getFunctionNumber());
// Assumes in correct section after the entry point.
// Record beginning of function.
if (!PrologEndLoc.isUnknown()) {
DebugLoc FnStartDL =
- getFnDebugLoc(PrologEndLoc, MF->getFunction()->getContext());
+ PrologEndLoc.getFnDebugLoc(MF->getFunction()->getContext());
recordSourceLine(
FnStartDL.getLine(), FnStartDL.getCol(),
FnStartDL.getScope(MF->getFunction()->getContext()),
// Gather and emit post-function debug information.
void DwarfDebug::endFunction(const MachineFunction *MF) {
- if (!MMI->hasDebugInfo() || LScopes.empty())
+ // Every beginFunction(MF) call should be followed by an endFunction(MF) call,
+ // though the beginFunction may not be called at all.
+ // We should handle both cases.
+ if (CurFn == 0)
+ CurFn = MF;
+ else
+ assert(CurFn == MF);
+ assert(CurFn != 0);
+
+ if (!MMI->hasDebugInfo() || LScopes.empty()) {
+ CurFn = 0;
return;
+ }
// Define end label for subprogram.
FunctionEndSym = Asm->GetTempSymbol("func_end", Asm->getFunctionNumber());
// Assumes in correct section after the entry point.
Asm->OutStreamer.EmitLabel(FunctionEndSym);
- // Set DwarfCompileUnitID in MCContext to default value.
+
+ // Set DwarfDwarfCompileUnitID in MCContext to default value.
Asm->OutStreamer.getContext().setDwarfCompileUnitID(0);
SmallPtrSet<const MDNode *, 16> ProcessedVars;
- collectVariableInfo(MF, ProcessedVars);
+ collectVariableInfo(ProcessedVars);
LexicalScope *FnScope = LScopes.getCurrentFunctionScope();
- CompileUnit *TheCU = SPMap.lookup(FnScope->getScopeNode());
+ DwarfCompileUnit *TheCU = SPMap.lookup(FnScope->getScopeNode());
assert(TheCU && "Unable to find compile unit!");
// Construct abstract scopes.
}
DIE *CurFnDIE = constructScopeDIE(TheCU, FnScope);
-
- if (!MF->getTarget().Options.DisableFramePointerElim(*MF))
+ if (!CurFn->getTarget().Options.DisableFramePointerElim(*CurFn))
TheCU->addFlag(CurFnDIE, dwarf::DW_AT_APPLE_omit_frame_ptr);
+ // Add the range of this function to the list of ranges for the CU.
+ RangeSpan Span(FunctionBeginSym, FunctionEndSym);
+ TheCU->addRange(llvm_move(Span));
+
// Clear debug info
for (ScopeVariablesMap::iterator I = ScopeVariables.begin(),
E = ScopeVariables.end();
LabelsBeforeInsn.clear();
LabelsAfterInsn.clear();
PrevLabel = NULL;
+ CurFn = 0;
}
// Register a source line with debug info. Returns the unique label that was
// Compute the size and offset of a DIE. The offset is relative to start of the
// CU. It returns the offset after laying out the DIE.
-unsigned DwarfUnits::computeSizeAndOffset(DIE *Die, unsigned Offset) {
+unsigned DwarfFile::computeSizeAndOffset(DIE *Die, unsigned Offset) {
// Get the children.
const std::vector<DIE *> &Children = Die->getChildren();
assignAbbrevNumber(Die->getAbbrev());
// Get the abbreviation for this DIE.
- unsigned AbbrevNumber = Die->getAbbrevNumber();
- const DIEAbbrev *Abbrev = Abbreviations[AbbrevNumber - 1];
+ const DIEAbbrev &Abbrev = Die->getAbbrev();
// Set DIE offset
Die->setOffset(Offset);
// Start the size with the size of abbreviation code.
- Offset += MCAsmInfo::getULEB128Size(AbbrevNumber);
+ Offset += MCAsmInfo::getULEB128Size(Die->getAbbrevNumber());
const SmallVectorImpl<DIEValue *> &Values = Die->getValues();
- const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev->getData();
+ const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
// Size the DIE attribute values.
for (unsigned i = 0, N = Values.size(); i < N; ++i)
// Size the DIE children if any.
if (!Children.empty()) {
- assert(Abbrev->getChildrenFlag() == dwarf::DW_CHILDREN_yes &&
+ assert(Abbrev.getChildrenFlag() == dwarf::DW_CHILDREN_yes &&
"Children flag not set");
for (unsigned j = 0, M = Children.size(); j < M; ++j)
}
// Compute the size and offset for each DIE.
-void DwarfUnits::computeSizeAndOffsets() {
+void DwarfFile::computeSizeAndOffsets() {
// Offset from the first CU in the debug info section is 0 initially.
unsigned SecOffset = 0;
// Iterate over each compile unit and set the size and offsets for each
// DIE within each compile unit. All offsets are CU relative.
- for (SmallVectorImpl<CompileUnit *>::iterator I = CUs.begin(), E = CUs.end();
+ for (SmallVectorImpl<DwarfUnit *>::const_iterator I = CUs.begin(),
+ E = CUs.end();
I != E; ++I) {
(*I)->setDebugInfoOffset(SecOffset);
// EndOffset here is CU-relative, after laying out
// all of the CU DIE.
- unsigned EndOffset = computeSizeAndOffset((*I)->getCUDie(), Offset);
+ unsigned EndOffset = computeSizeAndOffset((*I)->getUnitDie(), Offset);
SecOffset += EndOffset;
}
}
// Dwarf sections base addresses.
DwarfInfoSectionSym =
emitSectionSym(Asm, TLOF.getDwarfInfoSection(), "section_info");
+ if (useSplitDwarf())
+ DwarfInfoDWOSectionSym =
+ emitSectionSym(Asm, TLOF.getDwarfInfoDWOSection(), "section_info_dwo");
DwarfAbbrevSectionSym =
emitSectionSym(Asm, TLOF.getDwarfAbbrevSection(), "section_abbrev");
if (useSplitDwarf())
DwarfDebugLocSectionSym =
emitSectionSym(Asm, TLOF.getDwarfLocSection(), "section_debug_loc");
-
- TextSectionSym = emitSectionSym(Asm, TLOF.getTextSection(), "text_begin");
- emitSectionSym(Asm, TLOF.getDataSection());
}
// Recursively emits a debug information entry.
-void DwarfDebug::emitDIE(DIE *Die, ArrayRef<DIEAbbrev *> Abbrevs) {
+void DwarfDebug::emitDIE(DIE *Die) {
// Get the abbreviation for this DIE.
- unsigned AbbrevNumber = Die->getAbbrevNumber();
- const DIEAbbrev *Abbrev = Abbrevs[AbbrevNumber - 1];
+ const DIEAbbrev &Abbrev = Die->getAbbrev();
// Emit the code (index) for the abbreviation.
if (Asm->isVerbose())
- Asm->OutStreamer.AddComment("Abbrev [" + Twine(AbbrevNumber) + "] 0x" +
- Twine::utohexstr(Die->getOffset()) + ":0x" +
- Twine::utohexstr(Die->getSize()) + " " +
- dwarf::TagString(Abbrev->getTag()));
- Asm->EmitULEB128(AbbrevNumber);
+ Asm->OutStreamer.AddComment("Abbrev [" + Twine(Abbrev.getNumber()) +
+ "] 0x" + Twine::utohexstr(Die->getOffset()) +
+ ":0x" + Twine::utohexstr(Die->getSize()) + " " +
+ dwarf::TagString(Abbrev.getTag()));
+ Asm->EmitULEB128(Abbrev.getNumber());
const SmallVectorImpl<DIEValue *> &Values = Die->getValues();
- const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev->getData();
+ const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
// Emit the DIE attribute values.
for (unsigned i = 0, N = Values.size(); i < N; ++i) {
// For DW_FORM_ref_addr, output the offset from beginning of debug info
// section. Origin->getOffset() returns the offset from start of the
// compile unit.
- CompileUnit *CU = CUDieMap.lookup(Origin->getUnit());
+ DwarfCompileUnit *CU = CUDieMap.lookup(Origin->getUnit());
assert(CU && "CUDie should belong to a CU.");
Addr += CU->getDebugInfoOffset();
if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
- Asm->EmitLabelPlusOffset(DwarfInfoSectionSym, Addr,
+ Asm->EmitLabelPlusOffset(CU->getSectionSym(), Addr,
DIEEntry::getRefAddrSize(Asm));
else
- Asm->EmitLabelOffsetDifference(DwarfInfoSectionSym, Addr,
- DwarfInfoSectionSym,
+ Asm->EmitLabelOffsetDifference(CU->getSectionSym(), Addr,
+ CU->getSectionSym(),
DIEEntry::getRefAddrSize(Asm));
} else {
// Make sure Origin belong to the same CU.
}
break;
}
- case dwarf::DW_AT_ranges: {
- // DW_AT_range Value encodes offset in debug_range section.
- DIEInteger *V = cast<DIEInteger>(Values[i]);
-
- if (Asm->MAI->doesDwarfUseRelocationsAcrossSections()) {
- Asm->EmitLabelPlusOffset(DwarfDebugRangeSectionSym, V->getValue(), 4);
- } else {
- Asm->EmitLabelOffsetDifference(DwarfDebugRangeSectionSym, V->getValue(),
- DwarfDebugRangeSectionSym, 4);
- }
- break;
- }
case dwarf::DW_AT_location: {
if (DIELabel *L = dyn_cast<DIELabel>(Values[i])) {
if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
}
// Emit the DIE children if any.
- if (Abbrev->getChildrenFlag() == dwarf::DW_CHILDREN_yes) {
+ if (Abbrev.getChildrenFlag() == dwarf::DW_CHILDREN_yes) {
const std::vector<DIE *> &Children = Die->getChildren();
for (unsigned j = 0, M = Children.size(); j < M; ++j)
- emitDIE(Children[j], Abbrevs);
+ emitDIE(Children[j]);
- if (Asm->isVerbose())
- Asm->OutStreamer.AddComment("End Of Children Mark");
+ Asm->OutStreamer.AddComment("End Of Children Mark");
Asm->EmitInt8(0);
}
}
// Emit the various dwarf units to the unit section USection with
// the abbreviations going into ASection.
-void DwarfUnits::emitUnits(DwarfDebug *DD, const MCSection *USection,
- const MCSection *ASection,
- const MCSymbol *ASectionSym) {
- Asm->OutStreamer.SwitchSection(USection);
- for (SmallVectorImpl<CompileUnit *>::iterator I = CUs.begin(), E = CUs.end();
+void DwarfFile::emitUnits(DwarfDebug *DD, const MCSection *ASection,
+ const MCSymbol *ASectionSym) {
+ for (SmallVectorImpl<DwarfUnit *>::iterator I = CUs.begin(), E = CUs.end();
I != E; ++I) {
- CompileUnit *TheCU = *I;
- DIE *Die = TheCU->getCUDie();
+ DwarfUnit *TheU = *I;
+ DIE *Die = TheU->getUnitDie();
+ const MCSection *USection = TheU->getSection();
+ Asm->OutStreamer.SwitchSection(USection);
// Emit the compile units header.
- Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol(USection->getLabelBeginName(),
- TheCU->getUniqueID()));
+ Asm->OutStreamer.EmitLabel(TheU->getLabelBegin());
// Emit size of content not including length itself
Asm->OutStreamer.AddComment("Length of Unit");
- Asm->EmitInt32(TheCU->getHeaderSize() + Die->getSize());
+ Asm->EmitInt32(TheU->getHeaderSize() + Die->getSize());
- TheCU->emitHeader(ASection, ASectionSym);
+ TheU->emitHeader(ASection, ASectionSym);
- DD->emitDIE(Die, Abbreviations);
- Asm->OutStreamer.EmitLabel(
- Asm->GetTempSymbol(USection->getLabelEndName(), TheCU->getUniqueID()));
+ DD->emitDIE(Die);
+ Asm->OutStreamer.EmitLabel(TheU->getLabelEnd());
}
}
// Emit the debug info section.
void DwarfDebug::emitDebugInfo() {
- DwarfUnits &Holder = useSplitDwarf() ? SkeletonHolder : InfoHolder;
+ DwarfFile &Holder = useSplitDwarf() ? SkeletonHolder : InfoHolder;
- Holder.emitUnits(this, Asm->getObjFileLowering().getDwarfInfoSection(),
- Asm->getObjFileLowering().getDwarfAbbrevSection(),
+ Holder.emitUnits(this, Asm->getObjFileLowering().getDwarfAbbrevSection(),
DwarfAbbrevSectionSym);
}
// Emit the abbreviation section.
void DwarfDebug::emitAbbreviations() {
- if (!useSplitDwarf())
- emitAbbrevs(Asm->getObjFileLowering().getDwarfAbbrevSection(),
- &Abbreviations);
- else
- emitSkeletonAbbrevs(Asm->getObjFileLowering().getDwarfAbbrevSection());
+ DwarfFile &Holder = useSplitDwarf() ? SkeletonHolder : InfoHolder;
+
+ Holder.emitAbbrevs(Asm->getObjFileLowering().getDwarfAbbrevSection());
}
-void DwarfDebug::emitAbbrevs(const MCSection *Section,
- std::vector<DIEAbbrev *> *Abbrevs) {
+void DwarfFile::emitAbbrevs(const MCSection *Section) {
// Check to see if it is worth the effort.
- if (!Abbrevs->empty()) {
+ if (!Abbreviations.empty()) {
// Start the debug abbrev section.
Asm->OutStreamer.SwitchSection(Section);
- MCSymbol *Begin = Asm->GetTempSymbol(Section->getLabelBeginName());
- Asm->OutStreamer.EmitLabel(Begin);
-
// For each abbrevation.
- for (unsigned i = 0, N = Abbrevs->size(); i < N; ++i) {
+ for (unsigned i = 0, N = Abbreviations.size(); i < N; ++i) {
// Get abbreviation data
- const DIEAbbrev *Abbrev = Abbrevs->at(i);
+ const DIEAbbrev *Abbrev = Abbreviations[i];
// Emit the abbrevations code (base 1 index.)
Asm->EmitULEB128(Abbrev->getNumber(), "Abbreviation Code");
// Mark end of abbreviations.
Asm->EmitULEB128(0, "EOM(3)");
-
- MCSymbol *End = Asm->GetTempSymbol(Section->getLabelEndName());
- Asm->OutStreamer.EmitLabel(End);
}
}
void DwarfDebug::emitAccelNames() {
DwarfAccelTable AT(
DwarfAccelTable::Atom(dwarf::DW_ATOM_die_offset, dwarf::DW_FORM_data4));
- for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
- E = CUMap.end();
+ for (SmallVectorImpl<DwarfUnit *>::const_iterator I = getUnits().begin(),
+ E = getUnits().end();
I != E; ++I) {
- CompileUnit *TheCU = I->second;
- const StringMap<std::vector<const DIE *> > &Names = TheCU->getAccelNames();
+ DwarfUnit *TheU = *I;
+ const StringMap<std::vector<const DIE *> > &Names = TheU->getAccelNames();
for (StringMap<std::vector<const DIE *> >::const_iterator
GI = Names.begin(),
GE = Names.end();
void DwarfDebug::emitAccelObjC() {
DwarfAccelTable AT(
DwarfAccelTable::Atom(dwarf::DW_ATOM_die_offset, dwarf::DW_FORM_data4));
- for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
- E = CUMap.end();
+ for (SmallVectorImpl<DwarfUnit *>::const_iterator I = getUnits().begin(),
+ E = getUnits().end();
I != E; ++I) {
- CompileUnit *TheCU = I->second;
- const StringMap<std::vector<const DIE *> > &Names = TheCU->getAccelObjC();
+ DwarfUnit *TheU = *I;
+ const StringMap<std::vector<const DIE *> > &Names = TheU->getAccelObjC();
for (StringMap<std::vector<const DIE *> >::const_iterator
GI = Names.begin(),
GE = Names.end();
void DwarfDebug::emitAccelNamespaces() {
DwarfAccelTable AT(
DwarfAccelTable::Atom(dwarf::DW_ATOM_die_offset, dwarf::DW_FORM_data4));
- for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
- E = CUMap.end();
+ for (SmallVectorImpl<DwarfUnit *>::const_iterator I = getUnits().begin(),
+ E = getUnits().end();
I != E; ++I) {
- CompileUnit *TheCU = I->second;
+ DwarfUnit *TheU = *I;
const StringMap<std::vector<const DIE *> > &Names =
- TheCU->getAccelNamespace();
+ TheU->getAccelNamespace();
for (StringMap<std::vector<const DIE *> >::const_iterator
GI = Names.begin(),
GE = Names.end();
Atoms.push_back(
DwarfAccelTable::Atom(dwarf::DW_ATOM_type_flags, dwarf::DW_FORM_data1));
DwarfAccelTable AT(Atoms);
- for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
- E = CUMap.end();
+ for (SmallVectorImpl<DwarfUnit *>::const_iterator I = getUnits().begin(),
+ E = getUnits().end();
I != E; ++I) {
- CompileUnit *TheCU = I->second;
+ DwarfUnit *TheU = *I;
const StringMap<std::vector<std::pair<const DIE *, unsigned> > > &Names =
- TheCU->getAccelTypes();
+ TheU->getAccelTypes();
for (StringMap<
std::vector<std::pair<const DIE *, unsigned> > >::const_iterator
GI = Names.begin(),
// reference in the pubname header doesn't change.
/// computeIndexValue - Compute the gdb index value for the DIE and CU.
-static dwarf::PubIndexEntryDescriptor computeIndexValue(CompileUnit *CU,
- DIE *Die) {
+static dwarf::PubIndexEntryDescriptor computeIndexValue(DwarfUnit *CU,
+ const DIE *Die) {
dwarf::GDBIndexEntryLinkage Linkage = dwarf::GIEL_STATIC;
// We could have a specification DIE that has our most of our knowledge,
/// emitDebugPubNames - Emit visible names into a debug pubnames section.
///
void DwarfDebug::emitDebugPubNames(bool GnuStyle) {
- const MCSection *ISec = Asm->getObjFileLowering().getDwarfInfoSection();
const MCSection *PSec =
GnuStyle ? Asm->getObjFileLowering().getDwarfGnuPubNamesSection()
: Asm->getObjFileLowering().getDwarfPubNamesSection();
- typedef DenseMap<const MDNode *, CompileUnit *> CUMapType;
- for (CUMapType::iterator I = CUMap.begin(), E = CUMap.end(); I != E; ++I) {
- CompileUnit *TheCU = I->second;
- unsigned ID = TheCU->getUniqueID();
+ DwarfFile &Holder = useSplitDwarf() ? SkeletonHolder : InfoHolder;
+ const SmallVectorImpl<DwarfUnit *> &Units = Holder.getUnits();
+ for (unsigned i = 0; i != Units.size(); ++i) {
+ DwarfUnit *TheU = Units[i];
+ unsigned ID = TheU->getUniqueID();
// Start the dwarf pubnames section.
Asm->OutStreamer.SwitchSection(PSec);
// Emit a label so we can reference the beginning of this pubname section.
if (GnuStyle)
- Asm->OutStreamer.EmitLabel(
- Asm->GetTempSymbol("gnu_pubnames", TheCU->getUniqueID()));
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("gnu_pubnames", ID));
// Emit the header.
Asm->OutStreamer.AddComment("Length of Public Names Info");
- Asm->EmitLabelDifference(Asm->GetTempSymbol("pubnames_end", ID),
- Asm->GetTempSymbol("pubnames_begin", ID), 4);
+ MCSymbol *BeginLabel = Asm->GetTempSymbol("pubnames_begin", ID);
+ MCSymbol *EndLabel = Asm->GetTempSymbol("pubnames_end", ID);
+ Asm->EmitLabelDifference(EndLabel, BeginLabel, 4);
- Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("pubnames_begin", ID));
+ Asm->OutStreamer.EmitLabel(BeginLabel);
Asm->OutStreamer.AddComment("DWARF Version");
Asm->EmitInt16(dwarf::DW_PUBNAMES_VERSION);
Asm->OutStreamer.AddComment("Offset of Compilation Unit Info");
- Asm->EmitSectionOffset(Asm->GetTempSymbol(ISec->getLabelBeginName(), ID),
- DwarfInfoSectionSym);
+ Asm->EmitSectionOffset(TheU->getLabelBegin(), TheU->getSectionSym());
Asm->OutStreamer.AddComment("Compilation Unit Length");
- Asm->EmitLabelDifference(Asm->GetTempSymbol(ISec->getLabelEndName(), ID),
- Asm->GetTempSymbol(ISec->getLabelBeginName(), ID),
- 4);
+ Asm->EmitLabelDifference(TheU->getLabelEnd(), TheU->getLabelBegin(), 4);
// Emit the pubnames for this compilation unit.
- const StringMap<DIE *> &Globals = TheCU->getGlobalNames();
- for (StringMap<DIE *>::const_iterator GI = Globals.begin(),
- GE = Globals.end();
+ const StringMap<const DIE *> &Globals = getUnits()[ID]->getGlobalNames();
+ for (StringMap<const DIE *>::const_iterator GI = Globals.begin(),
+ GE = Globals.end();
GI != GE; ++GI) {
const char *Name = GI->getKeyData();
- DIE *Entity = GI->second;
+ const DIE *Entity = GI->second;
Asm->OutStreamer.AddComment("DIE offset");
Asm->EmitInt32(Entity->getOffset());
if (GnuStyle) {
- dwarf::PubIndexEntryDescriptor Desc = computeIndexValue(TheCU, Entity);
+ dwarf::PubIndexEntryDescriptor Desc = computeIndexValue(TheU, Entity);
Asm->OutStreamer.AddComment(
Twine("Kind: ") + dwarf::GDBIndexEntryKindString(Desc.Kind) + ", " +
dwarf::GDBIndexEntryLinkageString(Desc.Linkage));
Asm->EmitInt8(Desc.toBits());
}
- if (Asm->isVerbose())
- Asm->OutStreamer.AddComment("External Name");
+ Asm->OutStreamer.AddComment("External Name");
Asm->OutStreamer.EmitBytes(StringRef(Name, GI->getKeyLength() + 1));
}
Asm->OutStreamer.AddComment("End Mark");
Asm->EmitInt32(0);
- Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("pubnames_end", ID));
+ Asm->OutStreamer.EmitLabel(EndLabel);
}
}
void DwarfDebug::emitDebugPubTypes(bool GnuStyle) {
- const MCSection *ISec = Asm->getObjFileLowering().getDwarfInfoSection();
const MCSection *PSec =
GnuStyle ? Asm->getObjFileLowering().getDwarfGnuPubTypesSection()
: Asm->getObjFileLowering().getDwarfPubTypesSection();
- for (DenseMap<const MDNode *, CompileUnit *>::iterator I = CUMap.begin(),
- E = CUMap.end();
- I != E; ++I) {
- CompileUnit *TheCU = I->second;
+ DwarfFile &Holder = useSplitDwarf() ? SkeletonHolder : InfoHolder;
+ const SmallVectorImpl<DwarfUnit *> &Units = Holder.getUnits();
+ for (unsigned i = 0; i != Units.size(); ++i) {
+ DwarfUnit *TheU = Units[i];
+ unsigned ID = TheU->getUniqueID();
+
// Start the dwarf pubtypes section.
Asm->OutStreamer.SwitchSection(PSec);
// Emit a label so we can reference the beginning of this pubtype section.
if (GnuStyle)
- Asm->OutStreamer.EmitLabel(
- Asm->GetTempSymbol("gnu_pubtypes", TheCU->getUniqueID()));
+ Asm->OutStreamer.EmitLabel(Asm->GetTempSymbol("gnu_pubtypes", ID));
// Emit the header.
Asm->OutStreamer.AddComment("Length of Public Types Info");
- Asm->EmitLabelDifference(
- Asm->GetTempSymbol("pubtypes_end", TheCU->getUniqueID()),
- Asm->GetTempSymbol("pubtypes_begin", TheCU->getUniqueID()), 4);
+ MCSymbol *BeginLabel = Asm->GetTempSymbol("pubtypes_begin", ID);
+ MCSymbol *EndLabel = Asm->GetTempSymbol("pubtypes_end", ID);
+ Asm->EmitLabelDifference(EndLabel, BeginLabel, 4);
- Asm->OutStreamer.EmitLabel(
- Asm->GetTempSymbol("pubtypes_begin", TheCU->getUniqueID()));
+ Asm->OutStreamer.EmitLabel(BeginLabel);
- if (Asm->isVerbose())
- Asm->OutStreamer.AddComment("DWARF Version");
+ Asm->OutStreamer.AddComment("DWARF Version");
Asm->EmitInt16(dwarf::DW_PUBTYPES_VERSION);
Asm->OutStreamer.AddComment("Offset of Compilation Unit Info");
- Asm->EmitSectionOffset(
- Asm->GetTempSymbol(ISec->getLabelBeginName(), TheCU->getUniqueID()),
- DwarfInfoSectionSym);
+ Asm->EmitSectionOffset(TheU->getLabelBegin(), TheU->getSectionSym());
Asm->OutStreamer.AddComment("Compilation Unit Length");
- Asm->EmitLabelDifference(
- Asm->GetTempSymbol(ISec->getLabelEndName(), TheCU->getUniqueID()),
- Asm->GetTempSymbol(ISec->getLabelBeginName(), TheCU->getUniqueID()), 4);
+ Asm->EmitLabelDifference(TheU->getLabelEnd(), TheU->getLabelBegin(), 4);
// Emit the pubtypes.
- const StringMap<DIE *> &Globals = TheCU->getGlobalTypes();
- for (StringMap<DIE *>::const_iterator GI = Globals.begin(),
- GE = Globals.end();
+ const StringMap<const DIE *> &Globals = getUnits()[ID]->getGlobalTypes();
+ for (StringMap<const DIE *>::const_iterator GI = Globals.begin(),
+ GE = Globals.end();
GI != GE; ++GI) {
const char *Name = GI->getKeyData();
- DIE *Entity = GI->second;
+ const DIE *Entity = GI->second;
- if (Asm->isVerbose())
- Asm->OutStreamer.AddComment("DIE offset");
+ Asm->OutStreamer.AddComment("DIE offset");
Asm->EmitInt32(Entity->getOffset());
if (GnuStyle) {
- dwarf::PubIndexEntryDescriptor Desc = computeIndexValue(TheCU, Entity);
+ dwarf::PubIndexEntryDescriptor Desc = computeIndexValue(TheU, Entity);
Asm->OutStreamer.AddComment(
Twine("Kind: ") + dwarf::GDBIndexEntryKindString(Desc.Kind) + ", " +
dwarf::GDBIndexEntryLinkageString(Desc.Linkage));
Asm->EmitInt8(Desc.toBits());
}
- if (Asm->isVerbose())
- Asm->OutStreamer.AddComment("External Name");
+ Asm->OutStreamer.AddComment("External Name");
// Emit the name with a terminating null byte.
Asm->OutStreamer.EmitBytes(StringRef(Name, GI->getKeyLength() + 1));
Asm->OutStreamer.AddComment("End Mark");
Asm->EmitInt32(0);
- Asm->OutStreamer.EmitLabel(
- Asm->GetTempSymbol("pubtypes_end", TheCU->getUniqueID()));
+ Asm->OutStreamer.EmitLabel(EndLabel);
}
}
// Emit strings into a string section.
-void DwarfUnits::emitStrings(const MCSection *StrSection,
- const MCSection *OffsetSection = NULL,
- const MCSymbol *StrSecSym = NULL) {
+void DwarfFile::emitStrings(const MCSection *StrSection,
+ const MCSection *OffsetSection = NULL,
+ const MCSymbol *StrSecSym = NULL) {
if (StringPool.empty())
return;
}
}
-
// Emit addresses into the section given.
-void DwarfUnits::emitAddresses(const MCSection *AddrSection) {
+void DwarfFile::emitAddresses(const MCSection *AddrSection) {
if (AddressPool.empty())
return;
// Emit visible names into a debug str section.
void DwarfDebug::emitDebugStr() {
- DwarfUnits &Holder = useSplitDwarf() ? SkeletonHolder : InfoHolder;
+ DwarfFile &Holder = useSplitDwarf() ? SkeletonHolder : InfoHolder;
Holder.emitStrings(Asm->getObjFileLowering().getDwarfStrSection());
}
}
};
-static bool CUSort(const CompileUnit *A, const CompileUnit *B) {
+static bool CUSort(const DwarfUnit *A, const DwarfUnit *B) {
return (A->getUniqueID() < B->getUniqueID());
}
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfARangesSection());
- typedef DenseMap<CompileUnit *, std::vector<ArangeSpan> > SpansType;
+ typedef DenseMap<
DwarfCompileUnit *, std::vector<ArangeSpan> > SpansType;
SpansType Spans;
}
}
- const MCSection *ISec = Asm->getObjFileLowering().getDwarfInfoSection();
unsigned PtrSize = Asm->getDataLayout().getPointerSize();
// Build a list of CUs used.
- std::vector<CompileUnit *> CUs;
+ std::vector<DwarfCompileUnit *> CUs;
for (SpansType::iterator it = Spans.begin(); it != Spans.end(); it++) {
- CompileUnit *CU = it->first;
+ DwarfCompileUnit *CU = it->first;
CUs.push_back(CU);
}
// Emit an arange table for each CU we used.
for (size_t CUIdx = 0; CUIdx < CUs.size(); CUIdx++) {
- CompileUnit *CU = CUs[CUIdx];
+ DwarfCompileUnit *CU = CUs[CUIdx];
std::vector<ArangeSpan> &List = Spans[CU];
// Emit size of content not including length itself.
unsigned TupleSize = PtrSize * 2;
// 7.20 in the Dwarf specs requires the table to be aligned to a tuple.
- unsigned Padding = 0;
- while (((sizeof(int32_t) + ContentSize + Padding) % TupleSize) != 0)
- Padding++;
+ unsigned Padding =
+ OffsetToAlignment(sizeof(int32_t) + ContentSize, TupleSize);
ContentSize += Padding;
ContentSize += (List.size() + 1) * TupleSize;
Asm->OutStreamer.AddComment("DWARF Arange version number");
Asm->EmitInt16(dwarf::DW_ARANGES_VERSION);
Asm->OutStreamer.AddComment("Offset Into Debug Info Section");
- Asm->EmitSectionOffset(
- Asm->GetTempSymbol(ISec->getLabelBeginName(), CU->getUniqueID()),
- DwarfInfoSectionSym);
+ Asm->EmitSectionOffset(CU->getLocalLabelBegin(), CU->getLocalSectionSym());
Asm->OutStreamer.AddComment("Address Size (in bytes)");
Asm->EmitInt8(PtrSize);
Asm->OutStreamer.AddComment("Segment Size (in bytes)");
Asm->EmitInt8(0);
- for (unsigned n = 0; n < Padding; n++)
- Asm->EmitInt8(0xff);
+ Asm->OutStreamer.EmitFill(Padding, 0xff);
for (unsigned n = 0; n < List.size(); n++) {
const ArangeSpan &Span = List[n];
// Start the dwarf ranges section.
Asm->OutStreamer.SwitchSection(
Asm->getObjFileLowering().getDwarfRangesSection());
+
+ // Size for our labels.
unsigned char Size = Asm->getDataLayout().getPointerSize();
- for (SmallVectorImpl<const MCSymbol *>::iterator
- I = DebugRangeSymbols.begin(),
- E = DebugRangeSymbols.end();
+
+ // Grab the specific ranges for the compile units in the module.
+ for (MapVector<const MDNode *, DwarfCompileUnit *>::iterator
+ I = CUMap.begin(),
+ E = CUMap.end();
I != E; ++I) {
- if (*I)
- Asm->OutStreamer.EmitSymbolValue(const_cast<MCSymbol *>(*I), Size);
- else
+ DwarfCompileUnit *TheCU = I->second;
+
+ // Emit a symbol so we can find the beginning of our ranges.
+ Asm->OutStreamer.EmitLabel(TheCU->getLabelRange());
+
+ // Iterate over the misc ranges for the compile units in the module.
+ const SmallVectorImpl<RangeSpanList> &RangeLists = TheCU->getRangeLists();
+ for (SmallVectorImpl<RangeSpanList>::const_iterator I = RangeLists.begin(),
+ E = RangeLists.end();
+ I != E; ++I) {
+ const RangeSpanList &List = *I;
+
+ // Emit our symbol so we can find the beginning of the range.
+ Asm->OutStreamer.EmitLabel(List.getSym());
+
+ for (SmallVectorImpl<RangeSpan>::const_iterator
+ RI = List.getRanges().begin(),
+ RE = List.getRanges().end();
+ RI != RE; ++RI) {
+ const RangeSpan &Range = *RI;
+ const MCSymbol *Begin = Range.getStart();
+ const MCSymbol *End = Range.getEnd();
+ assert(Begin && "Range without a begin symbol?");
+ assert(End && "Range without an end symbol?");
+ Asm->OutStreamer.EmitSymbolValue(Begin, Size);
+ Asm->OutStreamer.EmitSymbolValue(End, Size);
+ }
+
+ // And terminate the list with two 0 values.
Asm->OutStreamer.EmitIntValue(0, Size);
- }
-}
+ Asm->OutStreamer.EmitIntValue(0, Size);
+ }
-// Emit visible names into a debug macinfo section.
-void DwarfDebug::emitDebugMacInfo() {
- if (const MCSection *LineInfo =
- Asm->getObjFileLowering().getDwarfMacroInfoSection()) {
- // Start the dwarf macinfo section.
- Asm->OutStreamer.SwitchSection(LineInfo);
+ // Now emit a range for the CU itself.
+ if (useCURanges()) {
+ Asm->OutStreamer.EmitLabel(
+ Asm->GetTempSymbol("cu_ranges", TheCU->getUniqueID()));
+ const SmallVectorImpl<RangeSpan> &Ranges = TheCU->getRanges();
+ for (uint32_t i = 0, e = Ranges.size(); i != e; ++i) {
+ RangeSpan Range = Ranges[i];
+ const MCSymbol *Begin = Range.getStart();
+ const MCSymbol *End = Range.getEnd();
+ assert(Begin && "Range without a begin symbol?");
+ assert(End && "Range without an end symbol?");
+ Asm->OutStreamer.EmitSymbolValue(Begin, Size);
+ Asm->OutStreamer.EmitSymbolValue(End, Size);
+ }
+ // And terminate the list with two 0 values.
+ Asm->OutStreamer.EmitIntValue(0, Size);
+ Asm->OutStreamer.EmitIntValue(0, Size);
+ }
}
}
// DWARF5 Experimental Separate Dwarf emitters.
-// This DIE has the following attributes: DW_AT_comp_dir, DW_AT_stmt_list,
-// DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges, DW_AT_dwo_name, DW_AT_dwo_id,
-// DW_AT_ranges_base, DW_AT_addr_base.
-CompileUnit *DwarfDebug::constructSkeletonCU(const CompileUnit *CU) {
-
- DIE *Die = new DIE(dwarf::DW_TAG_compile_unit);
- CompileUnit *NewCU = new CompileUnit(CU->getUniqueID(), Die, CU->getNode(),
- Asm, this, &SkeletonHolder);
-
- NewCU->addLocalString(Die, dwarf::DW_AT_GNU_dwo_name,
- CU->getNode().getSplitDebugFilename());
+void DwarfDebug::initSkeletonUnit(const DwarfUnit *U, DIE *Die,
+ DwarfUnit *NewU) {
+ NewU->addLocalString(Die, dwarf::DW_AT_GNU_dwo_name,
+ U->getCUNode().getSplitDebugFilename());
// 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);
+ NewU->addSectionLabel(Die, dwarf::DW_AT_GNU_addr_base, DwarfAddrSectionSym);
else
- NewCU->addUInt(Die, dwarf::DW_AT_GNU_addr_base, dwarf::DW_FORM_sec_offset,
- 0);
+ NewU->addSectionOffset(Die, dwarf::DW_AT_GNU_addr_base, 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.
- NewCU->addUInt(Die, dwarf::DW_AT_low_pc, dwarf::DW_FORM_addr, 0);
+ if (!CompilationDir.empty())
+ NewU->addLocalString(Die, dwarf::DW_AT_comp_dir, CompilationDir);
+
+ addGnuPubAttributes(NewU, Die);
+
+ SkeletonHolder.addUnit(NewU);
+}
+
+// This DIE has the following attributes: DW_AT_comp_dir, DW_AT_stmt_list,
+// DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges, DW_AT_dwo_name, DW_AT_dwo_id,
+// DW_AT_ranges_base, DW_AT_addr_base.
+// TODO: Implement DW_AT_ranges_base.
+DwarfCompileUnit *DwarfDebug::constructSkeletonCU(const DwarfCompileUnit *CU) {
+
+ DIE *Die = new DIE(dwarf::DW_TAG_compile_unit);
+ DwarfCompileUnit *NewCU = new DwarfCompileUnit(
+ CU->getUniqueID(), Die, CU->getCUNode(), Asm, this, &SkeletonHolder);
+ NewCU->initSection(Asm->getObjFileLowering().getDwarfInfoSection(),
+ DwarfInfoSectionSym);
// 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);
+ NewCU->addSectionLabel(Die, dwarf::DW_AT_stmt_list, DwarfLineSectionSym);
else
- NewCU->addUInt(Die, dwarf::DW_AT_stmt_list, dwarf::DW_FORM_sec_offset, 0);
-
- if (!CompilationDir.empty())
- NewCU->addLocalString(Die, dwarf::DW_AT_comp_dir, CompilationDir);
-
- // Flags to let the linker know we have emitted new style pubnames.
- if (GenerateGnuPubSections) {
- if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
- NewCU->addLabel(Die, dwarf::DW_AT_GNU_pubnames, dwarf::DW_FORM_sec_offset,
- Asm->GetTempSymbol("gnu_pubnames", NewCU->getUniqueID()));
- else
- NewCU->addDelta(Die, dwarf::DW_AT_GNU_pubnames, dwarf::DW_FORM_data4,
- Asm->GetTempSymbol("gnu_pubnames", NewCU->getUniqueID()),
- DwarfGnuPubNamesSectionSym);
+ NewCU->addSectionOffset(Die, dwarf::DW_AT_stmt_list, 0);
- if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
- NewCU->addLabel(Die, dwarf::DW_AT_GNU_pubtypes, dwarf::DW_FORM_sec_offset,
- Asm->GetTempSymbol("gnu_pubtypes", NewCU->getUniqueID()));
- else
- NewCU->addDelta(Die, dwarf::DW_AT_GNU_pubtypes, dwarf::DW_FORM_data4,
- Asm->GetTempSymbol("gnu_pubtypes", NewCU->getUniqueID()),
- DwarfGnuPubTypesSectionSym);
- }
-
- // Flag if we've emitted any ranges and their location for the compile unit.
- if (DebugRangeSymbols.size()) {
- if (Asm->MAI->doesDwarfUseRelocationsAcrossSections())
- NewCU->addLabel(Die, dwarf::DW_AT_GNU_ranges_base,
- dwarf::DW_FORM_sec_offset, DwarfDebugRangeSectionSym);
- else
- NewCU->addUInt(Die, dwarf::DW_AT_GNU_ranges_base, dwarf::DW_FORM_data4,
- 0);
- }
-
- SkeletonHolder.addUnit(NewCU);
- SkeletonCUs.push_back(NewCU);
+ initSkeletonUnit(CU, Die, NewCU);
return NewCU;
}
-void DwarfDebug::emitSkeletonAbbrevs(const MCSection *Section) {
- assert(useSplitDwarf() && "No split dwarf debug info?");
- emitAbbrevs(Section, &SkeletonAbbrevs);
+// This DIE has the following attributes: DW_AT_comp_dir, DW_AT_dwo_name,
+// DW_AT_addr_base.
+DwarfTypeUnit *DwarfDebug::constructSkeletonTU(const DwarfTypeUnit *TU) {
+
+ DIE *Die = new DIE(dwarf::DW_TAG_type_unit);
+ DwarfTypeUnit *NewTU = new DwarfTypeUnit(
+ TU->getUniqueID(), Die, TU->getCUNode(), Asm, this, &SkeletonHolder);
+ NewTU->setTypeSignature(TU->getTypeSignature());
+ NewTU->setType(NULL);
+ NewTU->initSection(
+ Asm->getObjFileLowering().getDwarfTypesSection(TU->getTypeSignature()));
+
+ initSkeletonUnit(TU, Die, NewTU);
+ return NewTU;
}
// Emit the .debug_info.dwo section for separated dwarf. This contains the
// compile units that would normally be in debug_info.
void DwarfDebug::emitDebugInfoDWO() {
assert(useSplitDwarf() && "No split dwarf debug info?");
- InfoHolder.emitUnits(this, Asm->getObjFileLowering().getDwarfInfoDWOSection(),
+ InfoHolder.emitUnits(this,
Asm->getObjFileLowering().getDwarfAbbrevDWOSection(),
DwarfAbbrevDWOSectionSym);
}
// abbreviations for the .debug_info.dwo section.
void DwarfDebug::emitDebugAbbrevDWO() {
assert(useSplitDwarf() && "No split dwarf?");
- emitAbbrevs(Asm->getObjFileLowering().getDwarfAbbrevDWOSection(),
- &Abbreviations);
+ InfoHolder.emitAbbrevs(Asm->getObjFileLowering().getDwarfAbbrevDWOSection());
}
// Emit the .debug_str.dwo section for separated dwarf. This contains the
OffSec, StrSym);
}
-void DwarfDebug::addTypeUnitType(DIE *RefDie, DICompositeType CTy) {
- DenseMap<const MDNode*, std::pair<uint64_t, SmallVectorImpl<DIE*>* > >::iterator I = TypeUnits.find(CTy);
- SmallVector<DIE *, 8> References;
- References.push_back(RefDie);
- if (I != TypeUnits.end()) {
- if (I->second.second) {
- I->second.second->push_back(RefDie);
- return;
- }
- } else {
- DIE *UnitDie = new DIE(dwarf::DW_TAG_type_unit);
- CompileUnit *NewCU =
- new CompileUnit(GlobalCUIndexCount++, UnitDie,
- dwarf::DW_LANG_C_plus_plus, Asm, this, &InfoHolder);
- CUDieMap.insert(std::make_pair(UnitDie, NewCU));
- NewCU->addUInt(UnitDie, dwarf::DW_AT_language, dwarf::DW_FORM_data2,
- dwarf::DW_LANG_C_plus_plus);
-
- // Register the type in the TypeUnits map with a vector of references to be
- // populated whenever a reference is required.
- I = TypeUnits.insert(std::make_pair(CTy, std::make_pair(0, &References)))
- .first;
-
- // Construct the type, this may, recursively, require more type units that
- // may in turn require this type again - in which case they will add DIEs to
- // the References vector.
- DIE *Die = NewCU->createTypeDIE(CTy);
-
- if (GenerateODRHash && shouldAddODRHash(NewCU, Die))
- NewCU->addUInt(UnitDie, dwarf::DW_AT_GNU_odr_signature,
- dwarf::DW_FORM_data8,
- DIEHash().computeDIEODRSignature(*Die));
- // FIXME: This won't handle circularly referential structures, as the DIE
- // may have references to other DIEs still under construction and missing
- // their signature. Hashing should walk through the signatures to their
- // referenced type, or possibly walk the precomputed hashes of related types
- // at the end.
- uint64_t Signature = DIEHash().computeTypeSignature(*Die);
-
- // Remove the References vector and add the type hash.
- I->second.first = Signature;
- I->second.second = NULL;
-
-
- InfoHolder.addUnit(NewCU);
- }
-
- // Populate all the signatures.
- for (unsigned i = 0, e = References.size(); i != e; ++i) {
- CUMap.begin()->second->addUInt(References[i], dwarf::DW_AT_signature,
- dwarf::DW_FORM_ref_sig8, I->second.first);
+void DwarfDebug::addDwarfTypeUnitType(DICompileUnit CUNode,
+ StringRef Identifier, DIE *RefDie,
+ DICompositeType CTy) {
+ // Flag the type unit reference as a declaration so that if it contains
+ // members (implicit special members, static data member definitions, member
+ // declarations for definitions in this CU, etc) consumers don't get confused
+ // and think this is a full definition.
+ CUMap.begin()->second->addFlag(RefDie, dwarf::DW_AT_declaration);
+
+ const DwarfTypeUnit *&TU = DwarfTypeUnits[CTy];
+ if (TU) {
+ CUMap.begin()->second->addDIETypeSignature(RefDie, *TU);
+ return;
}
+
+ DIE *UnitDie = new DIE(dwarf::DW_TAG_type_unit);
+ DwarfTypeUnit *NewTU = new DwarfTypeUnit(
+ InfoHolder.getUnits().size(), UnitDie, CUNode, Asm, this, &InfoHolder);
+ TU = NewTU;
+ InfoHolder.addUnit(NewTU);
+
+ NewTU->addUInt(UnitDie, dwarf::DW_AT_language, dwarf::DW_FORM_data2,
+ CUNode.getLanguage());
+
+ MD5 Hash;
+ Hash.update(Identifier);
+ // ... take the least significant 8 bytes and return those. Our MD5
+ // implementation always returns its results in little endian, swap bytes
+ // appropriately.
+ MD5::MD5Result Result;
+ Hash.final(Result);
+ uint64_t Signature = *reinterpret_cast<support::ulittle64_t *>(Result + 8);
+ NewTU->setTypeSignature(Signature);
+ if (useSplitDwarf())
+ NewTU->setSkeleton(constructSkeletonTU(NewTU));
+
+ NewTU->setType(NewTU->createTypeDIE(CTy));
+
+ NewTU->initSection(
+ useSplitDwarf()
+ ? Asm->getObjFileLowering().getDwarfTypesDWOSection(Signature)
+ : Asm->getObjFileLowering().getDwarfTypesSection(Signature));
+
+ CUMap.begin()->second->addDIETypeSignature(RefDie, *NewTU);
}
projects / oota-llvm.git / blobdiff