DwarfUnit::DwarfUnit(unsigned UID, dwarf::Tag UnitTag, DICompileUnit Node,
AsmPrinter *A, DwarfDebug *DW, DwarfFile *DWU)
: UniqueID(UID), CUNode(Node), UnitDie(UnitTag), DebugInfoOffset(0), Asm(A),
- DD(DW), DU(DWU), IndexTyDie(nullptr), Section(nullptr),
- Skeleton(nullptr) {
+ DD(DW), DU(DWU), IndexTyDie(nullptr), Section(nullptr) {
assert(UnitTag == dwarf::DW_TAG_compile_unit ||
UnitTag == dwarf::DW_TAG_type_unit);
DIEIntegerOne = new (DIEValueAllocator) DIEInteger(1);
addLabel(Die, (dwarf::Attribute)0, Form, Label);
}
-/// addSectionLabel - Add a Dwarf section label attribute data and value.
-///
-void DwarfUnit::addSectionLabel(DIE &Die, dwarf::Attribute Attribute,
- const MCSymbol *Label) {
- if (DD->getDwarfVersion() >= 4)
- addLabel(Die, Attribute, dwarf::DW_FORM_sec_offset, Label);
- else
- addLabel(Die, Attribute, dwarf::DW_FORM_data4, Label);
-}
-
/// addSectionOffset - Add an offset into a section attribute data and value.
///
void DwarfUnit::addSectionOffset(DIE &Die, dwarf::Attribute Attribute,
}
}
-/// addSectionDelta - Add a section label delta attribute data and value.
-///
-void DwarfUnit::addSectionDelta(DIE &Die, dwarf::Attribute Attribute,
- const MCSymbol *Hi, const MCSymbol *Lo) {
- DIEValue *Value = new (DIEValueAllocator) DIEDelta(Hi, Lo);
- Die.addValue(Attribute, DD->getDwarfVersion() >= 4 ? dwarf::DW_FORM_sec_offset
- : dwarf::DW_FORM_data4,
- Value);
-}
-
void DwarfUnit::addLabelDelta(DIE &Die, dwarf::Attribute Attribute,
const MCSymbol *Hi, const MCSymbol *Lo) {
DIEValue *Value = new (DIEValueAllocator) DIEDelta(Hi, Lo);
createAndAddDIE(dwarf::DW_TAG_unspecified_parameters, Buffer);
} else {
DIE &Arg = createAndAddDIE(dwarf::DW_TAG_formal_parameter, Buffer);
- addType(Arg, DIType(Ty));
- if (DIType(Ty).isArtificial())
+ addType(Arg, Ty);
+ if (Ty.isArtificial())
addFlag(Arg, dwarf::DW_AT_artificial);
}
}
}
-std::unique_ptr<DIE>
-DwarfUnit::constructImportedEntityDIE(const DIImportedEntity &Module) {
- assert(Module.Verify() &&
- "Use one of the MDNode * overloads to handle invalid metadata");
- std::unique_ptr<DIE> IMDie = make_unique<DIE>((dwarf::Tag)Module.getTag());
- insertDIE(Module, IMDie.get());
- DIE *EntityDie;
- DIDescriptor Entity = resolve(Module.getEntity());
- if (Entity.isNameSpace())
- EntityDie = getOrCreateNameSpace(DINameSpace(Entity));
- else if (Entity.isSubprogram())
- EntityDie = getOrCreateSubprogramDIE(DISubprogram(Entity));
- else if (Entity.isType())
- EntityDie = getOrCreateTypeDIE(DIType(Entity));
- else
- EntityDie = getDIE(Entity);
- assert(EntityDie);
- addSourceLine(*IMDie, Module.getLineNumber(),
- Module.getContext().getFilename(),
- Module.getContext().getDirectory());
- addDIEEntry(*IMDie, dwarf::DW_AT_import, *EntityDie);
- StringRef Name = Module.getName();
- if (!Name.empty())
- addString(*IMDie, dwarf::DW_AT_name, Name);
-
- return IMDie;
-}
-
/// constructTypeDIE - Construct type DIE from DICompositeType.
void DwarfUnit::constructTypeDIE(DIE &Buffer, DICompositeType CTy) {
// Add name if not anonymous or intermediate type.
}
}
-/// constructVariableDIE - Construct a DIE for the given DbgVariable.
-std::unique_ptr<DIE> DwarfUnit::constructVariableDIE(DbgVariable &DV,
- bool Abstract) {
- auto D = constructVariableDIEImpl(DV, Abstract);
- DV.setDIE(*D);
- return D;
-}
-
-std::unique_ptr<DIE> DwarfUnit::constructVariableDIEImpl(const DbgVariable &DV,
- bool Abstract) {
- // Define variable debug information entry.
- auto VariableDie = make_unique<DIE>(DV.getTag());
-
- if (Abstract) {
- applyVariableAttributes(DV, *VariableDie);
- return VariableDie;
- }
-
- // Add variable address.
-
- unsigned Offset = DV.getDotDebugLocOffset();
- if (Offset != ~0U) {
- addLocationList(*VariableDie, dwarf::DW_AT_location, Offset);
- return VariableDie;
- }
-
- // Check if variable is described by a DBG_VALUE instruction.
- if (const MachineInstr *DVInsn = DV.getMInsn()) {
- assert(DVInsn->getNumOperands() == 4);
- if (DVInsn->getOperand(0).isReg()) {
- const MachineOperand RegOp = DVInsn->getOperand(0);
- // If the second operand is an immediate, this is an indirect value.
- if (DVInsn->getOperand(1).isImm()) {
- MachineLocation Location(RegOp.getReg(),
- DVInsn->getOperand(1).getImm());
- addVariableAddress(DV, *VariableDie, Location);
- } else if (RegOp.getReg())
- addVariableAddress(DV, *VariableDie, MachineLocation(RegOp.getReg()));
- } else if (DVInsn->getOperand(0).isImm())
- addConstantValue(*VariableDie, DVInsn->getOperand(0), DV.getType());
- else if (DVInsn->getOperand(0).isFPImm())
- addConstantFPValue(*VariableDie, DVInsn->getOperand(0));
- else if (DVInsn->getOperand(0).isCImm())
- addConstantValue(*VariableDie, DVInsn->getOperand(0).getCImm(),
- DV.getType());
-
- return VariableDie;
- }
-
- // .. else use frame index.
- int FI = DV.getFrameIndex();
- if (FI != ~0) {
- unsigned FrameReg = 0;
- const TargetFrameLowering *TFI =
- Asm->TM.getSubtargetImpl()->getFrameLowering();
- int Offset = TFI->getFrameIndexReference(*Asm->MF, FI, FrameReg);
- MachineLocation Location(FrameReg, Offset);
- addVariableAddress(DV, *VariableDie, Location);
- }
-
- return VariableDie;
-}
-
/// constructMemberDIE - Construct member DIE from DIDerivedType.
void DwarfUnit::constructMemberDIE(DIE &Buffer, DIDerivedType DT) {
DIE &MemberDie = createAndAddDIE(DT.getTag(), Buffer);
Asm->EmitInt8(Asm->getDataLayout().getPointerSize());
}
+void DwarfUnit::initSection(const MCSection *Section) {
+ assert(!this->Section);
+ this->Section = Section;
+ this->LabelBegin =
+ Asm->GetTempSymbol(Section->getLabelBeginName(), getUniqueID());
+ this->LabelEnd =
+ Asm->GetTempSymbol(Section->getLabelEndName(), getUniqueID());
+}
+
void DwarfTypeUnit::emitHeader(const MCSymbol *ASectionSym) const {
DwarfUnit::emitHeader(ASectionSym);
Asm->OutStreamer.AddComment("Type Signature");
sizeof(Ty->getOffset()));
}
-void DwarfTypeUnit::initSection(const MCSection *Section) {
- assert(!this->Section);
- this->Section = Section;
- // Since each type unit is contained in its own COMDAT section, the begin
- // label and the section label are the same. Using the begin label emission in
- // DwarfDebug to emit the section label as well is slightly subtle/sneaky, but
- // the only other alternative of lazily constructing start-of-section labels
- // and storing a mapping in DwarfDebug (or AsmPrinter).
- this->SectionSym = this->LabelBegin =
- Asm->GetTempSymbol(Section->getLabelBeginName(), getUniqueID());
- this->LabelEnd =
- Asm->GetTempSymbol(Section->getLabelEndName(), getUniqueID());
-}
projects / oota-llvm.git / blobdiff