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-rw-r--r--llvm/lib/CodeGen/AsmPrinter/DIE.cpp817
1 files changed, 817 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/DIE.cpp b/llvm/lib/CodeGen/AsmPrinter/DIE.cpp
new file mode 100644
index 000000000000..f4134da48caa
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+++ b/llvm/lib/CodeGen/AsmPrinter/DIE.cpp
@@ -0,0 +1,817 @@
+//===--- lib/CodeGen/DIE.cpp - DWARF Info Entries -------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// 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/Config/llvm-config.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;
+
+#define DEBUG_TYPE "dwarfdebug"
+
+//===----------------------------------------------------------------------===//
+// 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));
+ if (Form == dwarf::DW_FORM_implicit_const)
+ ID.AddInteger(Value);
+}
+
+//===----------------------------------------------------------------------===//
+// 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).data());
+
+ // Emit whether it has children DIEs.
+ AP->EmitULEB128((unsigned)Children, dwarf::ChildrenString(Children).data());
+
+ // 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()).data());
+
+ // Emit form type.
+#ifndef NDEBUG
+ // Could be an assertion, but this way we can see the failing form code
+ // easily, which helps track down where it came from.
+ if (!dwarf::isValidFormForVersion(AttrData.getForm(),
+ AP->getDwarfVersion())) {
+ LLVM_DEBUG(dbgs() << "Invalid form " << format("0x%x", AttrData.getForm())
+ << " for DWARF version " << AP->getDwarfVersion()
+ << "\n");
+ llvm_unreachable("Invalid form for specified DWARF version");
+ }
+#endif
+ AP->EmitULEB128(AttrData.getForm(),
+ dwarf::FormEncodingString(AttrData.getForm()).data());
+
+ // Emit value for DW_FORM_implicit_const.
+ if (AttrData.getForm() == dwarf::DW_FORM_implicit_const)
+ AP->EmitSLEB128(AttrData.getValue());
+ }
+
+ // Mark end of abbreviation.
+ AP->EmitULEB128(0, "EOM(1)");
+ AP->EmitULEB128(0, "EOM(2)");
+}
+
+LLVM_DUMP_METHOD
+void DIEAbbrev::print(raw_ostream &O) const {
+ 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());
+
+ if (Data[i].getForm() == dwarf::DW_FORM_implicit_const)
+ O << " " << Data[i].getValue();
+
+ O << '\n';
+ }
+}
+
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+LLVM_DUMP_METHOD void DIEAbbrev::dump() const {
+ print(dbgs());
+}
+#endif
+
+//===----------------------------------------------------------------------===//
+// DIEAbbrevSet Implementation
+//===----------------------------------------------------------------------===//
+
+DIEAbbrevSet::~DIEAbbrevSet() {
+ for (DIEAbbrev *Abbrev : Abbreviations)
+ Abbrev->~DIEAbbrev();
+}
+
+DIEAbbrev &DIEAbbrevSet::uniqueAbbreviation(DIE &Die) {
+
+ FoldingSetNodeID ID;
+ DIEAbbrev Abbrev = Die.generateAbbrev();
+ Abbrev.Profile(ID);
+
+ void *InsertPos;
+ if (DIEAbbrev *Existing =
+ AbbreviationsSet.FindNodeOrInsertPos(ID, InsertPos)) {
+ Die.setAbbrevNumber(Existing->getNumber());
+ return *Existing;
+ }
+
+ // Move the abbreviation to the heap and assign a number.
+ DIEAbbrev *New = new (Alloc) DIEAbbrev(std::move(Abbrev));
+ Abbreviations.push_back(New);
+ New->setNumber(Abbreviations.size());
+ Die.setAbbrevNumber(Abbreviations.size());
+
+ // Store it for lookup.
+ AbbreviationsSet.InsertNode(New, InsertPos);
+ return *New;
+}
+
+void DIEAbbrevSet::Emit(const AsmPrinter *AP, MCSection *Section) const {
+ if (!Abbreviations.empty()) {
+ // Start the debug abbrev section.
+ AP->OutStreamer->SwitchSection(Section);
+ AP->emitDwarfAbbrevs(Abbreviations);
+ }
+}
+
+//===----------------------------------------------------------------------===//
+// DIE Implementation
+//===----------------------------------------------------------------------===//
+
+DIE *DIE::getParent() const {
+ return Owner.dyn_cast<DIE*>();
+}
+
+DIEAbbrev DIE::generateAbbrev() const {
+ DIEAbbrev Abbrev(Tag, hasChildren());
+ for (const DIEValue &V : values())
+ if (V.getForm() == dwarf::DW_FORM_implicit_const)
+ Abbrev.AddImplicitConstAttribute(V.getAttribute(),
+ V.getDIEInteger().getValue());
+ else
+ Abbrev.AddAttribute(V.getAttribute(), V.getForm());
+ return Abbrev;
+}
+
+unsigned DIE::getDebugSectionOffset() const {
+ const DIEUnit *Unit = getUnit();
+ assert(Unit && "DIE must be owned by a DIEUnit to get its absolute offset");
+ return Unit->getDebugSectionOffset() + getOffset();
+}
+
+const DIE *DIE::getUnitDie() 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;
+}
+
+DIEUnit *DIE::getUnit() const {
+ const DIE *UnitDie = getUnitDie();
+ if (UnitDie)
+ return UnitDie->Owner.dyn_cast<DIEUnit*>();
+ 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();
+}
+
+LLVM_DUMP_METHOD
+static void printValues(raw_ostream &O, const DIEValueList &Values,
+ StringRef Type, unsigned Size, unsigned IndentCount) {
+ O << Type << ": Size: " << Size << "\n";
+
+ unsigned I = 0;
+ const std::string Indent(IndentCount, ' ');
+ for (const auto &V : Values.values()) {
+ O << Indent;
+ O << "Blk[" << I++ << "]";
+ O << " " << dwarf::FormEncodingString(V.getForm()) << " ";
+ V.print(O);
+ O << "\n";
+ }
+}
+
+LLVM_DUMP_METHOD
+void DIE::print(raw_ostream &O, unsigned IndentCount) const {
+ const std::string Indent(IndentCount, ' ');
+ O << Indent << "Die: " << format("0x%lx", (long)(intptr_t) this)
+ << ", Offset: " << Offset << ", Size: " << Size << "\n";
+
+ O << Indent << dwarf::TagString(getTag()) << " "
+ << dwarf::ChildrenString(hasChildren()) << "\n";
+
+ IndentCount += 2;
+ for (const auto &V : values()) {
+ O << Indent;
+ O << dwarf::AttributeString(V.getAttribute());
+ O << " " << dwarf::FormEncodingString(V.getForm()) << " ";
+ V.print(O);
+ O << "\n";
+ }
+ IndentCount -= 2;
+
+ for (const auto &Child : children())
+ Child.print(O, IndentCount + 4);
+
+ O << "\n";
+}
+
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+LLVM_DUMP_METHOD void DIE::dump() const {
+ print(dbgs());
+}
+#endif
+
+unsigned DIE::computeOffsetsAndAbbrevs(const AsmPrinter *AP,
+ DIEAbbrevSet &AbbrevSet,
+ unsigned CUOffset) {
+ // Unique the abbreviation and fill in the abbreviation number so this DIE
+ // can be emitted.
+ const DIEAbbrev &Abbrev = AbbrevSet.uniqueAbbreviation(*this);
+
+ // Set compile/type unit relative offset of this DIE.
+ setOffset(CUOffset);
+
+ // Add the byte size of the abbreviation code.
+ CUOffset += getULEB128Size(getAbbrevNumber());
+
+ // Add the byte size of all the DIE attribute values.
+ for (const auto &V : values())
+ CUOffset += V.SizeOf(AP);
+
+ // Let the children compute their offsets and abbreviation numbers.
+ if (hasChildren()) {
+ (void)Abbrev;
+ assert(Abbrev.hasChildren() && "Children flag not set");
+
+ for (auto &Child : children())
+ CUOffset = Child.computeOffsetsAndAbbrevs(AP, AbbrevSet, CUOffset);
+
+ // Each child chain is terminated with a zero byte, adjust the offset.
+ CUOffset += sizeof(int8_t);
+ }
+
+ // Compute the byte size of this DIE and all of its children correctly. This
+ // is needed so that top level DIE can help the compile unit set its length
+ // correctly.
+ setSize(CUOffset - getOffset());
+ return CUOffset;
+}
+
+//===----------------------------------------------------------------------===//
+// DIEUnit Implementation
+//===----------------------------------------------------------------------===//
+DIEUnit::DIEUnit(uint16_t V, uint8_t A, dwarf::Tag UnitTag)
+ : Die(UnitTag), Section(nullptr), Offset(0), Length(0), Version(V),
+ AddrSize(A)
+{
+ Die.Owner = this;
+ assert((UnitTag == dwarf::DW_TAG_compile_unit ||
+ UnitTag == dwarf::DW_TAG_type_unit ||
+ UnitTag == dwarf::DW_TAG_partial_unit) && "expected a unit TAG");
+}
+
+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");
+}
+
+LLVM_DUMP_METHOD
+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"
+ }
+}
+
+#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
+LLVM_DUMP_METHOD 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 {
+ switch (Form) {
+ case dwarf::DW_FORM_implicit_const:
+ 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:
+ case dwarf::DW_FORM_ref1:
+ case dwarf::DW_FORM_data1:
+ case dwarf::DW_FORM_strx1:
+ case dwarf::DW_FORM_addrx1:
+ case dwarf::DW_FORM_ref2:
+ case dwarf::DW_FORM_data2:
+ case dwarf::DW_FORM_strx2:
+ case dwarf::DW_FORM_addrx2:
+ case dwarf::DW_FORM_strx3:
+ case dwarf::DW_FORM_strp:
+ case dwarf::DW_FORM_ref4:
+ case dwarf::DW_FORM_data4:
+ case dwarf::DW_FORM_ref_sup4:
+ case dwarf::DW_FORM_strx4:
+ case dwarf::DW_FORM_addrx4:
+ case dwarf::DW_FORM_ref8:
+ case dwarf::DW_FORM_ref_sig8:
+ case dwarf::DW_FORM_data8:
+ case dwarf::DW_FORM_ref_sup8:
+ case dwarf::DW_FORM_GNU_ref_alt:
+ case dwarf::DW_FORM_GNU_strp_alt:
+ case dwarf::DW_FORM_line_strp:
+ case dwarf::DW_FORM_sec_offset:
+ case dwarf::DW_FORM_strp_sup:
+ case dwarf::DW_FORM_addr:
+ case dwarf::DW_FORM_ref_addr:
+ Asm->OutStreamer->EmitIntValue(Integer, SizeOf(Asm, Form));
+ return;
+ case dwarf::DW_FORM_GNU_str_index:
+ case dwarf::DW_FORM_GNU_addr_index:
+ case dwarf::DW_FORM_ref_udata:
+ case dwarf::DW_FORM_strx:
+ case dwarf::DW_FORM_addrx:
+ case dwarf::DW_FORM_rnglistx:
+ case dwarf::DW_FORM_udata:
+ Asm->EmitULEB128(Integer);
+ return;
+ case dwarf::DW_FORM_sdata:
+ Asm->EmitSLEB128(Integer);
+ return;
+ default: llvm_unreachable("DIE Value form not supported yet");
+ }
+}
+
+/// SizeOf - Determine size of integer value in bytes.
+///
+unsigned DIEInteger::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
+ dwarf::FormParams Params = {0, 0, dwarf::DWARF32};
+ if (AP)
+ Params = {AP->getDwarfVersion(), uint8_t(AP->getPointerSize()),
+ AP->OutStreamer->getContext().getDwarfFormat()};
+
+ if (Optional<uint8_t> FixedSize = dwarf::getFixedFormByteSize(Form, Params))
+ return *FixedSize;
+
+ switch (Form) {
+ case dwarf::DW_FORM_GNU_str_index:
+ case dwarf::DW_FORM_GNU_addr_index:
+ case dwarf::DW_FORM_ref_udata:
+ case dwarf::DW_FORM_strx:
+ case dwarf::DW_FORM_addrx:
+ case dwarf::DW_FORM_rnglistx:
+ case dwarf::DW_FORM_udata:
+ return getULEB128Size(Integer);
+ case dwarf::DW_FORM_sdata:
+ return getSLEB128Size(Integer);
+ default: llvm_unreachable("DIE Value form not supported yet");
+ }
+}
+
+LLVM_DUMP_METHOD
+void DIEInteger::print(raw_ostream &O) const {
+ O << "Int: " << (int64_t)Integer << " 0x";
+ O.write_hex(Integer);
+}
+
+//===----------------------------------------------------------------------===//
+// DIEExpr Implementation
+//===----------------------------------------------------------------------===//
+
+/// EmitValue - Emit expression value.
+///
+void DIEExpr::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
+ AP->EmitDebugValue(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->getPointerSize();
+}
+
+LLVM_DUMP_METHOD
+void DIEExpr::print(raw_ostream &O) const { O << "Expr: " << *Expr; }
+
+//===----------------------------------------------------------------------===//
+// 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 ||
+ Form == dwarf::DW_FORM_data4);
+}
+
+/// 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->MAI->getCodePointerSize();
+}
+
+LLVM_DUMP_METHOD
+void DIELabel::print(raw_ostream &O) const { O << "Lbl: " << Label->getName(); }
+
+//===----------------------------------------------------------------------===//
+// DIEBaseTypeRef Implementation
+//===----------------------------------------------------------------------===//
+
+void DIEBaseTypeRef::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
+ uint64_t Offset = CU->ExprRefedBaseTypes[Index].Die->getOffset();
+ assert(Offset < (1ULL << (ULEB128PadSize * 7)) && "Offset wont fit");
+ AP->EmitULEB128(Offset, nullptr, ULEB128PadSize);
+}
+
+unsigned DIEBaseTypeRef::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
+ return ULEB128PadSize;
+}
+
+LLVM_DUMP_METHOD
+void DIEBaseTypeRef::print(raw_ostream &O) const { O << "BaseTypeRef: " << Index; }
+
+//===----------------------------------------------------------------------===//
+// 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->MAI->getCodePointerSize();
+}
+
+LLVM_DUMP_METHOD
+void DIEDelta::print(raw_ostream &O) const {
+ O << "Del: " << LabelHi->getName() << "-" << LabelLo->getName();
+}
+
+//===----------------------------------------------------------------------===//
+// DIEString Implementation
+//===----------------------------------------------------------------------===//
+
+/// EmitValue - Emit string value.
+///
+void DIEString::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
+ // Index of string in symbol table.
+ switch (Form) {
+ case dwarf::DW_FORM_GNU_str_index:
+ case dwarf::DW_FORM_strx:
+ case dwarf::DW_FORM_strx1:
+ case dwarf::DW_FORM_strx2:
+ case dwarf::DW_FORM_strx3:
+ case dwarf::DW_FORM_strx4:
+ DIEInteger(S.getIndex()).EmitValue(AP, Form);
+ return;
+ case dwarf::DW_FORM_strp:
+ if (AP->MAI->doesDwarfUseRelocationsAcrossSections())
+ DIELabel(S.getSymbol()).EmitValue(AP, Form);
+ else
+ DIEInteger(S.getOffset()).EmitValue(AP, Form);
+ return;
+ default:
+ llvm_unreachable("Expected valid string form");
+ }
+}
+
+/// SizeOf - Determine size of delta value in bytes.
+///
+unsigned DIEString::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
+ // Index of string in symbol table.
+ switch (Form) {
+ case dwarf::DW_FORM_GNU_str_index:
+ case dwarf::DW_FORM_strx:
+ case dwarf::DW_FORM_strx1:
+ case dwarf::DW_FORM_strx2:
+ case dwarf::DW_FORM_strx3:
+ case dwarf::DW_FORM_strx4:
+ return DIEInteger(S.getIndex()).SizeOf(AP, Form);
+ case dwarf::DW_FORM_strp:
+ if (AP->MAI->doesDwarfUseRelocationsAcrossSections())
+ return DIELabel(S.getSymbol()).SizeOf(AP, Form);
+ return DIEInteger(S.getOffset()).SizeOf(AP, Form);
+ default:
+ llvm_unreachable("Expected valid string form");
+ }
+}
+
+LLVM_DUMP_METHOD
+void DIEString::print(raw_ostream &O) const {
+ O << "String: " << S.getString();
+}
+
+//===----------------------------------------------------------------------===//
+// DIEInlineString Implementation
+//===----------------------------------------------------------------------===//
+void DIEInlineString::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
+ if (Form == dwarf::DW_FORM_string) {
+ AP->OutStreamer->EmitBytes(S);
+ AP->emitInt8(0);
+ return;
+ }
+ llvm_unreachable("Expected valid string form");
+}
+
+unsigned DIEInlineString::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
+ // Emit string bytes + NULL byte.
+ return S.size() + 1;
+}
+
+LLVM_DUMP_METHOD
+void DIEInlineString::print(raw_ostream &O) const {
+ O << "InlineString: " << S;
+}
+
+//===----------------------------------------------------------------------===//
+// DIEEntry Implementation
+//===----------------------------------------------------------------------===//
+
+/// EmitValue - Emit debug information entry offset.
+///
+void DIEEntry::EmitValue(const AsmPrinter *AP, dwarf::Form Form) const {
+
+ switch (Form) {
+ case dwarf::DW_FORM_ref1:
+ case dwarf::DW_FORM_ref2:
+ case dwarf::DW_FORM_ref4:
+ case dwarf::DW_FORM_ref8:
+ AP->OutStreamer->EmitIntValue(Entry->getOffset(), SizeOf(AP, Form));
+ return;
+
+ case dwarf::DW_FORM_ref_udata:
+ AP->EmitULEB128(Entry->getOffset());
+ return;
+
+ case dwarf::DW_FORM_ref_addr: {
+ // Get the absolute offset for this DIE within the debug info/types section.
+ unsigned Addr = Entry->getDebugSectionOffset();
+ if (const MCSymbol *SectionSym =
+ Entry->getUnit()->getCrossSectionRelativeBaseAddress()) {
+ AP->EmitLabelPlusOffset(SectionSym, Addr, SizeOf(AP, Form), true);
+ return;
+ }
+
+ AP->OutStreamer->EmitIntValue(Addr, SizeOf(AP, Form));
+ return;
+ }
+ default:
+ llvm_unreachable("Improper form for DIE reference");
+ }
+}
+
+unsigned DIEEntry::SizeOf(const AsmPrinter *AP, dwarf::Form Form) const {
+ switch (Form) {
+ case dwarf::DW_FORM_ref1:
+ return 1;
+ case dwarf::DW_FORM_ref2:
+ return 2;
+ case dwarf::DW_FORM_ref4:
+ return 4;
+ case dwarf::DW_FORM_ref8:
+ return 8;
+ case dwarf::DW_FORM_ref_udata:
+ return getULEB128Size(Entry->getOffset());
+ case dwarf::DW_FORM_ref_addr:
+ if (AP->getDwarfVersion() == 2)
+ return AP->MAI->getCodePointerSize();
+ switch (AP->OutStreamer->getContext().getDwarfFormat()) {
+ case dwarf::DWARF32:
+ return 4;
+ case dwarf::DWARF64:
+ return 8;
+ }
+ llvm_unreachable("Invalid DWARF format");
+
+ default:
+ llvm_unreachable("Improper form for DIE reference");
+ }
+}
+
+LLVM_DUMP_METHOD
+void DIEEntry::print(raw_ostream &O) const {
+ O << format("Die: 0x%lx", (long)(intptr_t)&Entry);
+}
+
+//===----------------------------------------------------------------------===//
+// 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");
+ }
+}
+
+LLVM_DUMP_METHOD
+void DIELoc::print(raw_ostream &O) const {
+ printValues(O, *this, "ExprLoc", Size, 5);
+}
+
+//===----------------------------------------------------------------------===//
+// 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;
+ case dwarf::DW_FORM_string: break;
+ case dwarf::DW_FORM_data16: 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);
+ case dwarf::DW_FORM_data16: return 16;
+ default: llvm_unreachable("Improper form for block");
+ }
+}
+
+LLVM_DUMP_METHOD
+void DIEBlock::print(raw_ostream &O) const {
+ printValues(O, *this, "Blk", Size, 5);
+}
+
+//===----------------------------------------------------------------------===//
+// 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->MAI->getCodePointerSize();
+}
+
+/// 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());
+}
+
+LLVM_DUMP_METHOD
+void DIELocList::print(raw_ostream &O) const { O << "LocList: " << Index; }
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-11 07:13:04 +0000