| //===--- lib/CodeGen/DIE.cpp - DWARF Info Entries -------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Data structures for DWARF info entries. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/CodeGen/DIE.h" |
| #include "DwarfCompileUnit.h" |
| #include "DwarfDebug.h" |
| #include "DwarfUnit.h" |
| #include "llvm/ADT/Twine.h" |
| #include "llvm/CodeGen/AsmPrinter.h" |
| #include "llvm/IR/DataLayout.h" |
| #include "llvm/MC/MCAsmInfo.h" |
| #include "llvm/MC/MCContext.h" |
| #include "llvm/MC/MCStreamer.h" |
| #include "llvm/MC/MCSymbol.h" |
| #include "llvm/Support/Debug.h" |
| #include "llvm/Support/ErrorHandling.h" |
| #include "llvm/Support/Format.h" |
| #include "llvm/Support/FormattedStream.h" |
| #include "llvm/Support/LEB128.h" |
| #include "llvm/Support/MD5.h" |
| #include "llvm/Support/raw_ostream.h" |
| using namespace llvm; |
| |
| //===----------------------------------------------------------------------===// |
| // DIEAbbrevData Implementation |
| //===----------------------------------------------------------------------===// |
| |
| /// Profile - Used to gather unique data for the abbreviation folding set. |
| /// |
| void DIEAbbrevData::Profile(FoldingSetNodeID &ID) const { |
| // Explicitly cast to an integer type for which FoldingSetNodeID has |
| // overloads. Otherwise MSVC 2010 thinks this call is ambiguous. |
| ID.AddInteger(unsigned(Attribute)); |
| ID.AddInteger(unsigned(Form)); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // DIEAbbrev Implementation |
| //===----------------------------------------------------------------------===// |
| |
| /// Profile - Used to gather unique data for the abbreviation folding set. |
| /// |
| void DIEAbbrev::Profile(FoldingSetNodeID &ID) const { |
| ID.AddInteger(unsigned(Tag)); |
| ID.AddInteger(unsigned(Children)); |
| |
| // For each attribute description. |
| for (unsigned i = 0, N = Data.size(); i < N; ++i) |
| Data[i].Profile(ID); |
| } |
| |
| /// Emit - Print the abbreviation using the specified asm printer. |
| /// |
| void DIEAbbrev::Emit(const AsmPrinter *AP) const { |
| // Emit its Dwarf tag type. |
| AP->EmitULEB128(Tag, dwarf::TagString(Tag)); |
| |
| // Emit whether it has children DIEs. |
| AP->EmitULEB128((unsigned)Children, dwarf::ChildrenString(Children)); |
| |
| // For each attribute description. |
| for (unsigned i = 0, N = Data.size(); i < N; ++i) { |
| const DIEAbbrevData &AttrData = Data[i]; |
| |
| // Emit attribute type. |
| AP->EmitULEB128(AttrData.getAttribute(), |
| dwarf::AttributeString(AttrData.getAttribute())); |
| |
| // Emit form type. |
| AP->EmitULEB128(AttrData.getForm(), |
| dwarf::FormEncodingString(AttrData.getForm())); |
| } |
| |
| // Mark end of abbreviation. |
| AP->EmitULEB128(0, "EOM(1)"); |
| AP->EmitULEB128(0, "EOM(2)"); |
| } |
| |
| #ifndef NDEBUG |
| void DIEAbbrev::print(raw_ostream &O) { |
| O << "Abbreviation @" |
| << format("0x%lx", (long)(intptr_t)this) |
| << " " |
| << dwarf::TagString(Tag) |
| << " " |
| << dwarf::ChildrenString(Children) |
| << '\n'; |
| |
| for (unsigned i = 0, N = Data.size(); i < N; ++i) { |
| O << " " |
| << dwarf::AttributeString(Data[i].getAttribute()) |
| << " " |
| << dwarf::FormEncodingString(Data[i].getForm()) |
| << '\n'; |
| } |
| } |
| void DIEAbbrev::dump() { print(dbgs()); } |
| #endif |
| |
| DIEAbbrev DIE::generateAbbrev() const { |
| DIEAbbrev Abbrev(Tag, hasChildren()); |
| for (const DIEValue &V : Values) |
| Abbrev.AddAttribute(V.getAttribute(), V.getForm()); |
| return Abbrev; |
| } |
| |
| /// Climb up the parent chain to get the unit DIE to which this DIE |
| /// belongs. |
| const DIE *DIE::getUnit() const { |
| const DIE *Cu = getUnitOrNull(); |
| assert(Cu && "We should not have orphaned DIEs."); |
| return Cu; |
| } |
| |
| /// Climb up the parent chain to get the unit DIE this DIE belongs |
| /// to. Return NULL if DIE is not added to an owner yet. |
| const DIE *DIE::getUnitOrNull() const { |
| const DIE *p = this; |
| while (p) { |
| if (p->getTag() == dwarf::DW_TAG_compile_unit || |
| p->getTag() == dwarf::DW_TAG_type_unit) |
| return p; |
| p = p->getParent(); |
| } |
| return nullptr; |
| } |
| |
| DIEValue DIE::findAttribute(dwarf::Attribute Attribute) const { |
| // Iterate through all the attributes until we find the one we're |
| // looking for, if we can't find it return NULL. |
| for (const auto &V : values()) |
| if (V.getAttribute() == Attribute) |
| return V; |
| return DIEValue(); |
| } |
| |
| #ifndef NDEBUG |
| void DIE::print(raw_ostream &O, unsigned IndentCount) const { |
| const std::string Indent(IndentCount, ' '); |
| bool isBlock = getTag() == 0; |
| |
| if (!isBlock) { |
| O << Indent |
| << "Die: " |
| << format("0x%lx", (long)(intptr_t)this) |
| << ", Offset: " << Offset |
| << ", Size: " << Size << "\n"; |
| |
| O << Indent |
| << dwarf::TagString(getTag()) |
| << " " |
| << dwarf::ChildrenString(hasChildren()) << "\n"; |
| } else { |
| O << "Size: " << Size << "\n"; |
| } |
| |
| IndentCount += 2; |
| unsigned I = 0; |
| for (const auto &V : Values) { |
| O << Indent; |
| |
| if (!isBlock) |
| O << dwarf::AttributeString(V.getAttribute()); |
| else |
| O << "Blk[" << I++ << "]"; |
| |
| O << " " << dwarf::FormEncodingString(V.getForm()) << " "; |
| V.print(O); |
| O << "\n"; |
| } |
| IndentCount -= 2; |
| |
| for (const auto &Child : children()) |
| Child.print(O, IndentCount + 4); |
| |
| if (!isBlock) O << "\n"; |
| } |
| |
| void DIE::dump() { |
| print(dbgs()); |
| } |
| #endif |
| |
| void DIEValue::EmitValue(const AsmPrinter *AP) const { |
| switch (Ty) { |
| case isNone: |
| llvm_unreachable("Expected valid DIEValue"); |
| #define HANDLE_DIEVALUE(T) \ |
| case is##T: \ |
| getDIE##T().EmitValue(AP, Form); \ |
| break; |
| #include "llvm/CodeGen/DIEValue.def" |
| } |
| } |
| |
| unsigned DIEValue::SizeOf(const AsmPrinter *AP) const { |
| switch (Ty) { |
| case isNone: |
| llvm_unreachable("Expected valid DIEValue"); |
| #define HANDLE_DIEVALUE(T) \ |
| case is##T: \ |
| return getDIE##T().SizeOf(AP, Form); |
| #include "llvm/CodeGen/DIEValue.def" |
| } |
| llvm_unreachable("Unknown DIE kind"); |
| } |
| |
| #ifndef NDEBUG |
| void DIEValue::print(raw_ostream &O) const { |
| switch (Ty) { |
| case isNone: |
| llvm_unreachable("Expected valid DIEValue"); |
| #define HANDLE_DIEVALUE(T) \ |
| case is##T: \ |
| getDIE##T().print(O); \ |
| break; |
| #include "llvm/CodeGen/DIEValue.def" |
| } |
| } |
| |
| void DIEValue::dump() const { |
| print(dbgs()); |
| } |
| #endif |
| |
| //===----------------------------------------------------------------------===// |
| // DIEInteger Implementation |
| //===----------------------------------------------------------------------===// |
| |
| /// EmitValue - Emit integer of appropriate size. |
| /// |
| void DIEInteger::EmitValue(const AsmPrinter *Asm, dwarf::Form Form) const { |
| unsigned Size = ~0U; |
| switch (Form) { |
| case dwarf::DW_FORM_flag_present: |
| // Emit something to keep the lines and comments in sync. |
| // FIXME: Is there a better way to do this? |
| Asm->OutStreamer->AddBlankLine(); |
| return; |
| case dwarf::DW_FORM_flag: // Fall thru |
| case dwarf::DW_FORM_ref1: // Fall thru |
| case dwarf::DW_FORM_data1: Size = 1; break; |
| case dwarf::DW_FORM_ref2: // Fall thru |
| case dwarf::DW_FORM_data2: Size = 2; break; |
| case dwarf::DW_FORM_sec_offset: // Fall thru |
| case dwarf::DW_FORM_strp: // Fall thru |
| case dwarf::DW_FORM_ref4: // Fall thru |
| case dwarf::DW_FORM_data4: Size = 4; break; |
| case dwarf::DW_FORM_ref8: // Fall thru |
| case dwarf::DW_FORM_ref_sig8: // Fall thru |
| case dwarf::DW_FORM_data8: Size = 8; break; |
| case dwarf::DW_FORM_GNU_str_index: Asm->EmitULEB128(Integer); return; |
| case dwarf::DW_FORM_GNU_addr_index: Asm->EmitULEB128(Integer); return; |
| case dwarf::DW_FORM_udata: Asm->EmitULEB128(Integer); return; |
| case dwarf::DW_FORM_sdata: Asm->EmitSLEB128(Integer); return; |
| case dwarf::DW_FORM_addr: |
| Size = Asm->getDataLayout().getPointerSize(); break; |
| case dwarf::DW_FORM_ref_addr: |
| Size = SizeOf(Asm, dwarf::DW_FORM_ref_addr); |
| break; |
| default: llvm_unreachable("DIE Value form not supported yet"); |
| } |
| Asm->OutStreamer->EmitIntValue(Integer, Size); |
| } |
| |
| /// SizeOf - Determine size of integer value in bytes. |
| /// |
| unsigned DIEInteger::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const { |
| switch (Form) { |
| case dwarf::DW_FORM_flag_present: return 0; |
| case dwarf::DW_FORM_flag: // Fall thru |
| case dwarf::DW_FORM_ref1: // Fall thru |
| case dwarf::DW_FORM_data1: return sizeof(int8_t); |
| case dwarf::DW_FORM_ref2: // Fall thru |
| case dwarf::DW_FORM_data2: return sizeof(int16_t); |
| case dwarf::DW_FORM_sec_offset: // Fall thru |
| case dwarf::DW_FORM_strp: // Fall thru |
| case dwarf::DW_FORM_ref4: // Fall thru |
| case dwarf::DW_FORM_data4: return sizeof(int32_t); |
| case dwarf::DW_FORM_ref8: // Fall thru |
| case dwarf::DW_FORM_ref_sig8: // Fall thru |
| case dwarf::DW_FORM_data8: return sizeof(int64_t); |
| case dwarf::DW_FORM_GNU_str_index: return getULEB128Size(Integer); |
| case dwarf::DW_FORM_GNU_addr_index: return getULEB128Size(Integer); |
| case dwarf::DW_FORM_udata: return getULEB128Size(Integer); |
| case dwarf::DW_FORM_sdata: return getSLEB128Size(Integer); |
| case dwarf::DW_FORM_addr: return AP->getDataLayout().getPointerSize(); |
| case dwarf::DW_FORM_ref_addr: |
| if (AP->OutStreamer->getContext().getDwarfVersion() == 2) |
| return AP->getDataLayout().getPointerSize(); |
| return sizeof(int32_t); |
| default: llvm_unreachable("DIE Value form not supported yet"); |
| } |
| } |
| |
| #ifndef NDEBUG |
| void DIEInteger::print(raw_ostream &O) const { |
| O << "Int: " << (int64_t)Integer << " 0x"; |
| O.write_hex(Integer); |
| } |
| #endif |
| |
| //===----------------------------------------------------------------------===// |
| // DIEExpr Implementation |
| //===----------------------------------------------------------------------===// |
| |
| /// EmitValue - Emit expression value. |
| /// |
| void DIEExpr::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const { |
| AP->OutStreamer->EmitValue(Expr, SizeOf(AP, Form)); |
| } |
| |
| /// SizeOf - Determine size of expression value in bytes. |
| /// |
| unsigned DIEExpr::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const { |
| if (Form == dwarf::DW_FORM_data4) return 4; |
| if (Form == dwarf::DW_FORM_sec_offset) return 4; |
| if (Form == dwarf::DW_FORM_strp) return 4; |
| return AP->getDataLayout().getPointerSize(); |
| } |
| |
| #ifndef NDEBUG |
| void DIEExpr::print(raw_ostream &O) const { O << "Expr: " << *Expr; } |
| #endif |
| |
| //===----------------------------------------------------------------------===// |
| // DIELabel Implementation |
| //===----------------------------------------------------------------------===// |
| |
| /// EmitValue - Emit label value. |
| /// |
| void DIELabel::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const { |
| AP->EmitLabelReference(Label, SizeOf(AP, Form), |
| Form == dwarf::DW_FORM_strp || |
| Form == dwarf::DW_FORM_sec_offset || |
| Form == dwarf::DW_FORM_ref_addr); |
| } |
| |
| /// SizeOf - Determine size of label value in bytes. |
| /// |
| unsigned DIELabel::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const { |
| if (Form == dwarf::DW_FORM_data4) return 4; |
| if (Form == dwarf::DW_FORM_sec_offset) return 4; |
| if (Form == dwarf::DW_FORM_strp) return 4; |
| return AP->getDataLayout().getPointerSize(); |
| } |
| |
| #ifndef NDEBUG |
| void DIELabel::print(raw_ostream &O) const { O << "Lbl: " << Label->getName(); } |
| #endif |
| |
| //===----------------------------------------------------------------------===// |
| // DIEDelta Implementation |
| //===----------------------------------------------------------------------===// |
| |
| /// EmitValue - Emit delta value. |
| /// |
| void DIEDelta::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const { |
| AP->EmitLabelDifference(LabelHi, LabelLo, SizeOf(AP, Form)); |
| } |
| |
| /// SizeOf - Determine size of delta value in bytes. |
| /// |
| unsigned DIEDelta::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const { |
| if (Form == dwarf::DW_FORM_data4) return 4; |
| if (Form == dwarf::DW_FORM_sec_offset) return 4; |
| if (Form == dwarf::DW_FORM_strp) return 4; |
| return AP->getDataLayout().getPointerSize(); |
| } |
| |
| #ifndef NDEBUG |
| void DIEDelta::print(raw_ostream &O) const { |
| O << "Del: " << LabelHi->getName() << "-" << LabelLo->getName(); |
| } |
| #endif |
| |
| //===----------------------------------------------------------------------===// |
| // DIEString Implementation |
| //===----------------------------------------------------------------------===// |
| |
| /// EmitValue - Emit string value. |
| /// |
| void DIEString::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const { |
| assert( |
| (Form == dwarf::DW_FORM_strp || Form == dwarf::DW_FORM_GNU_str_index) && |
| "Expected valid string form"); |
| |
| // Index of string in symbol table. |
| if (Form == dwarf::DW_FORM_GNU_str_index) { |
| DIEInteger(S.getIndex()).EmitValue(AP, Form); |
| return; |
| } |
| |
| // Relocatable symbol. |
| assert(Form == dwarf::DW_FORM_strp); |
| if (AP->MAI->doesDwarfUseRelocationsAcrossSections()) { |
| DIELabel(S.getSymbol()).EmitValue(AP, Form); |
| return; |
| } |
| |
| // Offset into symbol table. |
| DIEInteger(S.getOffset()).EmitValue(AP, Form); |
| } |
| |
| /// SizeOf - Determine size of delta value in bytes. |
| /// |
| unsigned DIEString::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const { |
| assert( |
| (Form == dwarf::DW_FORM_strp || Form == dwarf::DW_FORM_GNU_str_index) && |
| "Expected valid string form"); |
| |
| // Index of string in symbol table. |
| if (Form == dwarf::DW_FORM_GNU_str_index) |
| return DIEInteger(S.getIndex()).SizeOf(AP, Form); |
| |
| // Relocatable symbol. |
| if (AP->MAI->doesDwarfUseRelocationsAcrossSections()) |
| return DIELabel(S.getSymbol()).SizeOf(AP, Form); |
| |
| // Offset into symbol table. |
| return DIEInteger(S.getOffset()).SizeOf(AP, Form); |
| } |
| |
| #ifndef NDEBUG |
| void DIEString::print(raw_ostream &O) const { |
| O << "String: " << S.getString(); |
| } |
| #endif |
| |
| //===----------------------------------------------------------------------===// |
| // DIEEntry Implementation |
| //===----------------------------------------------------------------------===// |
| |
| /// EmitValue - Emit debug information entry offset. |
| /// |
| void DIEEntry::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const { |
| |
| if (Form == dwarf::DW_FORM_ref_addr) { |
| const DwarfDebug *DD = AP->getDwarfDebug(); |
| unsigned Addr = Entry->getOffset(); |
| assert(!DD->useSplitDwarf() && "TODO: dwo files can't have relocations."); |
| // For DW_FORM_ref_addr, output the offset from beginning of debug info |
| // section. Entry->getOffset() returns the offset from start of the |
| // compile unit. |
| DwarfCompileUnit *CU = DD->lookupUnit(Entry->getUnit()); |
| assert(CU && "CUDie should belong to a CU."); |
| Addr += CU->getDebugInfoOffset(); |
| if (AP->MAI->doesDwarfUseRelocationsAcrossSections()) |
| AP->EmitLabelPlusOffset(CU->getSectionSym(), Addr, |
| DIEEntry::getRefAddrSize(AP)); |
| else |
| AP->OutStreamer->EmitIntValue(Addr, DIEEntry::getRefAddrSize(AP)); |
| } else |
| AP->EmitInt32(Entry->getOffset()); |
| } |
| |
| unsigned DIEEntry::getRefAddrSize(const AsmPrinter *AP) { |
| // DWARF4: References that use the attribute form DW_FORM_ref_addr are |
| // specified to be four bytes in the DWARF 32-bit format and eight bytes |
| // in the DWARF 64-bit format, while DWARF Version 2 specifies that such |
| // references have the same size as an address on the target system. |
| const DwarfDebug *DD = AP->getDwarfDebug(); |
| assert(DD && "Expected Dwarf Debug info to be available"); |
| if (DD->getDwarfVersion() == 2) |
| return AP->getDataLayout().getPointerSize(); |
| return sizeof(int32_t); |
| } |
| |
| #ifndef NDEBUG |
| void DIEEntry::print(raw_ostream &O) const { |
| O << format("Die: 0x%lx", (long)(intptr_t)&Entry); |
| } |
| #endif |
| |
| //===----------------------------------------------------------------------===// |
| // DIETypeSignature Implementation |
| //===----------------------------------------------------------------------===// |
| void DIETypeSignature::EmitValue(const AsmPrinter *Asm, |
| dwarf::Form Form) const { |
| assert(Form == dwarf::DW_FORM_ref_sig8); |
| Asm->OutStreamer->EmitIntValue(Unit->getTypeSignature(), 8); |
| } |
| |
| #ifndef NDEBUG |
| void DIETypeSignature::print(raw_ostream &O) const { |
| O << format("Type Unit: 0x%lx", Unit->getTypeSignature()); |
| } |
| #endif |
| |
| //===----------------------------------------------------------------------===// |
| // DIELoc Implementation |
| //===----------------------------------------------------------------------===// |
| |
| /// ComputeSize - calculate the size of the location expression. |
| /// |
| unsigned DIELoc::ComputeSize(const AsmPrinter *AP) const { |
| if (!Size) { |
| for (const auto &V : Values) |
| Size += V.SizeOf(AP); |
| } |
| |
| return Size; |
| } |
| |
| /// EmitValue - Emit location data. |
| /// |
| void DIELoc::EmitValue(const AsmPrinter *Asm, dwarf::Form Form) const { |
| switch (Form) { |
| default: llvm_unreachable("Improper form for block"); |
| case dwarf::DW_FORM_block1: Asm->EmitInt8(Size); break; |
| case dwarf::DW_FORM_block2: Asm->EmitInt16(Size); break; |
| case dwarf::DW_FORM_block4: Asm->EmitInt32(Size); break; |
| case dwarf::DW_FORM_block: |
| case dwarf::DW_FORM_exprloc: |
| Asm->EmitULEB128(Size); break; |
| } |
| |
| for (const auto &V : Values) |
| V.EmitValue(Asm); |
| } |
| |
| /// SizeOf - Determine size of location data in bytes. |
| /// |
| unsigned DIELoc::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const { |
| switch (Form) { |
| case dwarf::DW_FORM_block1: return Size + sizeof(int8_t); |
| case dwarf::DW_FORM_block2: return Size + sizeof(int16_t); |
| case dwarf::DW_FORM_block4: return Size + sizeof(int32_t); |
| case dwarf::DW_FORM_block: |
| case dwarf::DW_FORM_exprloc: |
| return Size + getULEB128Size(Size); |
| default: llvm_unreachable("Improper form for block"); |
| } |
| } |
| |
| #ifndef NDEBUG |
| void DIELoc::print(raw_ostream &O) const { |
| O << "ExprLoc: "; |
| DIE::print(O, 5); |
| } |
| #endif |
| |
| //===----------------------------------------------------------------------===// |
| // DIEBlock Implementation |
| //===----------------------------------------------------------------------===// |
| |
| /// ComputeSize - calculate the size of the block. |
| /// |
| unsigned DIEBlock::ComputeSize(const AsmPrinter *AP) const { |
| if (!Size) { |
| for (const auto &V : Values) |
| Size += V.SizeOf(AP); |
| } |
| |
| return Size; |
| } |
| |
| /// EmitValue - Emit block data. |
| /// |
| void DIEBlock::EmitValue(const AsmPrinter *Asm, dwarf::Form Form) const { |
| switch (Form) { |
| default: llvm_unreachable("Improper form for block"); |
| case dwarf::DW_FORM_block1: Asm->EmitInt8(Size); break; |
| case dwarf::DW_FORM_block2: Asm->EmitInt16(Size); break; |
| case dwarf::DW_FORM_block4: Asm->EmitInt32(Size); break; |
| case dwarf::DW_FORM_block: Asm->EmitULEB128(Size); break; |
| } |
| |
| for (const auto &V : Values) |
| V.EmitValue(Asm); |
| } |
| |
| /// SizeOf - Determine size of block data in bytes. |
| /// |
| unsigned DIEBlock::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const { |
| switch (Form) { |
| case dwarf::DW_FORM_block1: return Size + sizeof(int8_t); |
| case dwarf::DW_FORM_block2: return Size + sizeof(int16_t); |
| case dwarf::DW_FORM_block4: return Size + sizeof(int32_t); |
| case dwarf::DW_FORM_block: return Size + getULEB128Size(Size); |
| default: llvm_unreachable("Improper form for block"); |
| } |
| } |
| |
| #ifndef NDEBUG |
| void DIEBlock::print(raw_ostream &O) const { |
| O << "Blk: "; |
| DIE::print(O, 5); |
| } |
| #endif |
| |
| //===----------------------------------------------------------------------===// |
| // DIELocList Implementation |
| //===----------------------------------------------------------------------===// |
| |
| unsigned DIELocList::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const { |
| if (Form == dwarf::DW_FORM_data4) |
| return 4; |
| if (Form == dwarf::DW_FORM_sec_offset) |
| return 4; |
| return AP->getDataLayout().getPointerSize(); |
| } |
| |
| /// EmitValue - Emit label value. |
| /// |
| void DIELocList::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const { |
| DwarfDebug *DD = AP->getDwarfDebug(); |
| MCSymbol *Label = DD->getDebugLocs().getList(Index).Label; |
| AP->emitDwarfSymbolReference(Label, /*ForceOffset*/ DD->useSplitDwarf()); |
| } |
| |
| #ifndef NDEBUG |
| void DIELocList::print(raw_ostream &O) const { O << "LocList: " << Index; } |
| #endif |