DwarfCFIException.cpp
DwarfDebug.cpp
DwarfException.cpp
+ DwarfFile.cpp
DwarfUnit.cpp
ErlangGCPrinter.cpp
OcamlGCPrinter.cpp
//===----------------------------------------------------------------------===//
-namespace llvm {
-
/// resolve - Look in the DwarfDebug map for the MDNode that
/// corresponds to the reference.
template <typename T> T DbgVariable::resolve(DIRef<T> Ref) const {
return Ty;
}
-} // end llvm namespace
-
DwarfDebug::DwarfDebug(AsmPrinter *A, Module *M)
: Asm(A), MMI(Asm->MMI), FirstCU(0), PrevLabel(NULL), GlobalRangeCount(0),
InfoHolder(A, "info_string", DIEValueAllocator),
return TmpSym;
}
-DwarfFile::DwarfFile(AsmPrinter *AP, const char *Pref, BumpPtrAllocator &DA)
- : Asm(AP), StringPool(DA), NextStringPoolNumber(0), StringPref(Pref) {}
-DwarfFile::~DwarfFile() {
-}
-
-MCSymbol *DwarfFile::getStringPoolSym() {
- return Asm->GetTempSymbol(StringPref);
-}
-
-MCSymbol *DwarfFile::getStringPoolEntry(StringRef Str) {
- std::pair<MCSymbol *, unsigned> &Entry =
- StringPool.GetOrCreateValue(Str).getValue();
- if (Entry.first)
- return Entry.first;
-
- Entry.second = NextStringPoolNumber++;
- return Entry.first = Asm->GetTempSymbol(StringPref, Entry.second);
-}
-
-unsigned DwarfFile::getStringPoolIndex(StringRef Str) {
- std::pair<MCSymbol *, unsigned> &Entry =
- StringPool.GetOrCreateValue(Str).getValue();
- if (Entry.first)
- return Entry.second;
-
- Entry.second = NextStringPoolNumber++;
- Entry.first = Asm->GetTempSymbol(StringPref, Entry.second);
- return Entry.second;
-}
-
-unsigned DwarfFile::getAddrPoolIndex(const MCSymbol *Sym, bool TLS) {
- std::pair<AddrPool::iterator, bool> P = AddressPool.insert(
- std::make_pair(Sym, AddressPoolEntry(AddressPool.size(), TLS)));
- return P.first->second.Number;
-}
-
-// Define a unique number for the abbreviation.
-//
-void DwarfFile::assignAbbrevNumber(DIEAbbrev &Abbrev) {
- // Check the set for priors.
- DIEAbbrev *InSet = AbbreviationsSet.GetOrInsertNode(&Abbrev);
-
- // If it's newly added.
- if (InSet == &Abbrev) {
- // Add to abbreviation list.
- Abbreviations.push_back(&Abbrev);
-
- // Assign the vector position + 1 as its number.
- Abbrev.setNumber(Abbreviations.size());
- } else {
- // Assign existing abbreviation number.
- Abbrev.setNumber(InSet->getNumber());
- }
-}
-
-void DwarfFile::addUnit(std::unique_ptr<DwarfUnit> U) {
- CUs.push_back(std::move(U));
-}
-
static bool isObjCClass(StringRef Name) {
return Name.startswith("+") || Name.startswith("-");
}
// Emit Methods
//===----------------------------------------------------------------------===//
-// 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 DwarfFile::computeSizeAndOffset(DIE &Die, unsigned Offset) {
- // Record the abbreviation.
- assignAbbrevNumber(Die.getAbbrev());
-
- // Get the abbreviation for this DIE.
- const DIEAbbrev &Abbrev = Die.getAbbrev();
-
- // Set DIE offset
- Die.setOffset(Offset);
-
- // Start the size with the size of abbreviation code.
- Offset += getULEB128Size(Die.getAbbrevNumber());
-
- const SmallVectorImpl<DIEValue *> &Values = Die.getValues();
- const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
-
- // Size the DIE attribute values.
- for (unsigned i = 0, N = Values.size(); i < N; ++i)
- // Size attribute value.
- Offset += Values[i]->SizeOf(Asm, AbbrevData[i].getForm());
-
- // Get the children.
- const auto &Children = Die.getChildren();
-
- // Size the DIE children if any.
- if (!Children.empty()) {
- assert(Abbrev.hasChildren() && "Children flag not set");
-
- for (auto &Child : Children)
- Offset = computeSizeAndOffset(*Child, Offset);
-
- // End of children marker.
- Offset += sizeof(int8_t);
- }
-
- Die.setSize(Offset - Die.getOffset());
- return Offset;
-}
-
-// Compute the size and offset for each DIE.
-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 (const auto &TheU : CUs) {
- TheU->setDebugInfoOffset(SecOffset);
-
- // CU-relative offset is reset to 0 here.
- unsigned Offset = sizeof(int32_t) + // Length of Unit Info
- TheU->getHeaderSize(); // Unit-specific headers
-
- // EndOffset here is CU-relative, after laying out
- // all of the CU DIE.
- unsigned EndOffset = computeSizeAndOffset(*TheU->getUnitDie(), Offset);
- SecOffset += EndOffset;
- }
-}
-
// Emit initial Dwarf sections with a label at the start of each one.
void DwarfDebug::emitSectionLabels() {
const TargetLoweringObjectFile &TLOF = Asm->getObjFileLowering();
}
}
-// Emit the various dwarf units to the unit section USection with
-// the abbreviations going into ASection.
-void DwarfFile::emitUnits(DwarfDebug *DD, const MCSymbol *ASectionSym) {
- for (const auto &TheU : CUs) {
- DIE *Die = TheU->getUnitDie();
- const MCSection *USection = TheU->getSection();
- Asm->OutStreamer.SwitchSection(USection);
-
- // Emit the compile units header.
- Asm->OutStreamer.EmitLabel(TheU->getLabelBegin());
-
- // Emit size of content not including length itself
- Asm->OutStreamer.AddComment("Length of Unit");
- Asm->EmitInt32(TheU->getHeaderSize() + Die->getSize());
-
- TheU->emitHeader(ASectionSym);
-
- DD->emitDIE(*Die);
- Asm->OutStreamer.EmitLabel(TheU->getLabelEnd());
- }
-}
-
// Emit the debug info section.
void DwarfDebug::emitDebugInfo() {
DwarfFile &Holder = useSplitDwarf() ? SkeletonHolder : InfoHolder;
Holder.emitAbbrevs(Asm->getObjFileLowering().getDwarfAbbrevSection());
}
-void DwarfFile::emitAbbrevs(const MCSection *Section) {
- // Check to see if it is worth the effort.
- if (!Abbreviations.empty()) {
- // Start the debug abbrev section.
- Asm->OutStreamer.SwitchSection(Section);
-
- // For each abbrevation.
- for (const DIEAbbrev *Abbrev : Abbreviations) {
- // Emit the abbrevations code (base 1 index.)
- Asm->EmitULEB128(Abbrev->getNumber(), "Abbreviation Code");
-
- // Emit the abbreviations data.
- Abbrev->Emit(Asm);
- }
-
- // Mark end of abbreviations.
- Asm->EmitULEB128(0, "EOM(3)");
- }
-}
-
// Emit the last address of the section and the end of the line matrix.
void DwarfDebug::emitEndOfLineMatrix(unsigned SectionEnd) {
// Define last address of section.
emitDebugPubSection(GnuStyle, PSec, "Types", &DwarfUnit::getGlobalTypes);
}
-// Emit strings into a string section.
-void DwarfFile::emitStrings(const MCSection *StrSection,
- const MCSection *OffsetSection = NULL,
- const MCSymbol *StrSecSym = NULL) {
-
- if (StringPool.empty())
- return;
-
- // Start the dwarf str section.
- Asm->OutStreamer.SwitchSection(StrSection);
-
- // Get all of the string pool entries and put them in an array by their ID so
- // we can sort them.
- SmallVector<std::pair<unsigned, const StrPool::value_type *>, 64 > Entries;
-
- for (const auto &I : StringPool)
- Entries.push_back(std::make_pair(I.second.second, &I));
-
- array_pod_sort(Entries.begin(), Entries.end());
-
- for (const auto &Entry : Entries) {
- // Emit a label for reference from debug information entries.
- Asm->OutStreamer.EmitLabel(Entry.second->getValue().first);
-
- // Emit the string itself with a terminating null byte.
- Asm->OutStreamer.EmitBytes(StringRef(Entry.second->getKeyData(),
- Entry.second->getKeyLength() + 1));
- }
-
- // If we've got an offset section go ahead and emit that now as well.
- if (OffsetSection) {
- Asm->OutStreamer.SwitchSection(OffsetSection);
- unsigned offset = 0;
- unsigned size = 4; // FIXME: DWARF64 is 8.
- for (const auto &Entry : Entries) {
- Asm->OutStreamer.EmitIntValue(offset, size);
- offset += Entry.second->getKeyLength() + 1;
- }
- }
-}
-
-// Emit addresses into the section given.
-void DwarfFile::emitAddresses(const MCSection *AddrSection) {
-
- if (AddressPool.empty())
- return;
-
- // Start the dwarf addr section.
- Asm->OutStreamer.SwitchSection(AddrSection);
-
- // Order the address pool entries by ID
- SmallVector<const MCExpr *, 64> Entries(AddressPool.size());
-
- for (const auto &I : AddressPool)
- Entries[I.second.Number] =
- I.second.TLS
- ? Asm->getObjFileLowering().getDebugThreadLocalSymbol(I.first)
- : MCSymbolRefExpr::Create(I.first, Asm->OutContext);
-
- for (const MCExpr *Entry : Entries)
- Asm->OutStreamer.EmitValue(Entry, Asm->getDataLayout().getPointerSize());
-}
-
// Emit visible names into a debug str section.
void DwarfDebug::emitDebugStr() {
DwarfFile &Holder = useSplitDwarf() ? SkeletonHolder : InfoHolder;
#ifndef CODEGEN_ASMPRINTER_DWARFDEBUG_H__
#define CODEGEN_ASMPRINTER_DWARFDEBUG_H__
+#include "DwarfFile.h"
#include "AsmPrinterHandler.h"
#include "DIE.h"
#include "DebugLocEntry.h"
template <typename T> T resolve(DIRef<T> Ref) const;
};
-/// \brief Collects and handles information specific to a particular
-/// collection of units. This collection represents all of the units
-/// that will be ultimately output into a single object file.
-class DwarfFile {
- // Target of Dwarf emission, used for sizing of abbreviations.
- AsmPrinter *Asm;
-
- // Used to uniquely define abbreviations.
- FoldingSet<DIEAbbrev> AbbreviationsSet;
-
- // A list of all the unique abbreviations in use.
- std::vector<DIEAbbrev *> Abbreviations;
-
- // A pointer to all units in the section.
- SmallVector<std::unique_ptr<DwarfUnit>, 1> CUs;
-
- // Collection of strings for this unit and assorted symbols.
- // A String->Symbol mapping of strings used by indirect
- // references.
- typedef StringMap<std::pair<MCSymbol *, unsigned>, BumpPtrAllocator &>
- StrPool;
- StrPool StringPool;
- unsigned NextStringPoolNumber;
- std::string StringPref;
-
- struct AddressPoolEntry {
- unsigned Number;
- bool TLS;
- AddressPoolEntry(unsigned Number, bool TLS) : Number(Number), TLS(TLS) {}
- };
- // Collection of addresses for this unit and assorted labels.
- // A Symbol->unsigned mapping of addresses used by indirect
- // references.
- typedef DenseMap<const MCSymbol *, AddressPoolEntry> AddrPool;
- AddrPool AddressPool;
-
-public:
- DwarfFile(AsmPrinter *AP, const char *Pref, BumpPtrAllocator &DA);
-
- ~DwarfFile();
-
- const SmallVectorImpl<std::unique_ptr<DwarfUnit>> &getUnits() { return CUs; }
-
- /// \brief Compute the size and offset of a DIE given an incoming Offset.
- unsigned computeSizeAndOffset(DIE &Die, unsigned Offset);
-
- /// \brief Compute the size and offset of all the DIEs.
- void computeSizeAndOffsets();
-
- /// \brief Define a unique number for the abbreviation.
- void assignAbbrevNumber(DIEAbbrev &Abbrev);
-
- /// \brief Add a unit to the list of CUs.
- void addUnit(std::unique_ptr<DwarfUnit> U);
-
- /// \brief Emit all of the units to the section listed with the given
- /// abbreviation section.
- void emitUnits(DwarfDebug *DD, const MCSymbol *ASectionSym);
-
- /// \brief Emit a set of abbreviations to the specific section.
- void emitAbbrevs(const MCSection *);
-
- /// \brief Emit all of the strings to the section given.
- void emitStrings(const MCSection *StrSection, const MCSection *OffsetSection,
- const MCSymbol *StrSecSym);
-
- /// \brief Emit all of the addresses to the section given.
- void emitAddresses(const MCSection *AddrSection);
-
- /// \brief Returns the entry into the start of the pool.
- MCSymbol *getStringPoolSym();
-
- /// \brief Returns an entry into the string pool with the given
- /// string text.
- MCSymbol *getStringPoolEntry(StringRef Str);
-
- /// \brief Returns the index into the string pool with the given
- /// string text.
- unsigned getStringPoolIndex(StringRef Str);
-
- /// \brief Returns the string pool.
- StrPool *getStringPool() { return &StringPool; }
-
- /// \brief Returns the index into the address pool with the given
- /// label/symbol.
- unsigned getAddrPoolIndex(const MCSymbol *Sym, bool TLS = false);
-
- /// \brief Returns the address pool.
- AddrPool *getAddrPool() { return &AddressPool; }
-};
/// \brief Helper used to pair up a symbol and its DWARF compile unit.
struct SymbolCU {
--- /dev/null
+//===-- llvm/CodeGen/DwarfFile.cpp - Dwarf Debug Framework ----------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "DwarfFile.h"
+
+#include "DwarfDebug.h"
+#include "DwarfUnit.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/Support/LEB128.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
+
+namespace llvm {
+DwarfFile::DwarfFile(AsmPrinter *AP, const char *Pref, BumpPtrAllocator &DA)
+ : Asm(AP), StringPool(DA), NextStringPoolNumber(0), StringPref(Pref) {}
+
+DwarfFile::~DwarfFile() {
+}
+
+MCSymbol *DwarfFile::getStringPoolSym() {
+ return Asm->GetTempSymbol(StringPref);
+}
+
+MCSymbol *DwarfFile::getStringPoolEntry(StringRef Str) {
+ std::pair<MCSymbol *, unsigned> &Entry =
+ StringPool.GetOrCreateValue(Str).getValue();
+ if (Entry.first)
+ return Entry.first;
+
+ Entry.second = NextStringPoolNumber++;
+ return Entry.first = Asm->GetTempSymbol(StringPref, Entry.second);
+}
+
+unsigned DwarfFile::getStringPoolIndex(StringRef Str) {
+ std::pair<MCSymbol *, unsigned> &Entry =
+ StringPool.GetOrCreateValue(Str).getValue();
+ if (Entry.first)
+ return Entry.second;
+
+ Entry.second = NextStringPoolNumber++;
+ Entry.first = Asm->GetTempSymbol(StringPref, Entry.second);
+ return Entry.second;
+}
+
+unsigned DwarfFile::getAddrPoolIndex(const MCSymbol *Sym, bool TLS) {
+ std::pair<AddrPool::iterator, bool> P = AddressPool.insert(
+ std::make_pair(Sym, AddressPoolEntry(AddressPool.size(), TLS)));
+ return P.first->second.Number;
+}
+
+// Define a unique number for the abbreviation.
+//
+void DwarfFile::assignAbbrevNumber(DIEAbbrev &Abbrev) {
+ // Check the set for priors.
+ DIEAbbrev *InSet = AbbreviationsSet.GetOrInsertNode(&Abbrev);
+
+ // If it's newly added.
+ if (InSet == &Abbrev) {
+ // Add to abbreviation list.
+ Abbreviations.push_back(&Abbrev);
+
+ // Assign the vector position + 1 as its number.
+ Abbrev.setNumber(Abbreviations.size());
+ } else {
+ // Assign existing abbreviation number.
+ Abbrev.setNumber(InSet->getNumber());
+ }
+}
+
+void DwarfFile::addUnit(std::unique_ptr<DwarfUnit> U) {
+ CUs.push_back(std::move(U));
+}
+
+// Emit the various dwarf units to the unit section USection with
+// the abbreviations going into ASection.
+void DwarfFile::emitUnits(DwarfDebug *DD, const MCSymbol *ASectionSym) {
+ for (const auto &TheU : CUs) {
+ DIE *Die = TheU->getUnitDie();
+ const MCSection *USection = TheU->getSection();
+ Asm->OutStreamer.SwitchSection(USection);
+
+ // Emit the compile units header.
+ Asm->OutStreamer.EmitLabel(TheU->getLabelBegin());
+
+ // Emit size of content not including length itself
+ Asm->OutStreamer.AddComment("Length of Unit");
+ Asm->EmitInt32(TheU->getHeaderSize() + Die->getSize());
+
+ TheU->emitHeader(ASectionSym);
+
+ DD->emitDIE(*Die);
+ Asm->OutStreamer.EmitLabel(TheU->getLabelEnd());
+ }
+}
+// Compute the size and offset for each DIE.
+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 (const auto &TheU : CUs) {
+ TheU->setDebugInfoOffset(SecOffset);
+
+ // CU-relative offset is reset to 0 here.
+ unsigned Offset = sizeof(int32_t) + // Length of Unit Info
+ TheU->getHeaderSize(); // Unit-specific headers
+
+ // EndOffset here is CU-relative, after laying out
+ // all of the CU DIE.
+ unsigned EndOffset = computeSizeAndOffset(*TheU->getUnitDie(), Offset);
+ SecOffset += EndOffset;
+ }
+}
+// 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 DwarfFile::computeSizeAndOffset(DIE &Die, unsigned Offset) {
+ // Record the abbreviation.
+ assignAbbrevNumber(Die.getAbbrev());
+
+ // Get the abbreviation for this DIE.
+ const DIEAbbrev &Abbrev = Die.getAbbrev();
+
+ // Set DIE offset
+ Die.setOffset(Offset);
+
+ // Start the size with the size of abbreviation code.
+ Offset += getULEB128Size(Die.getAbbrevNumber());
+
+ const SmallVectorImpl<DIEValue *> &Values = Die.getValues();
+ const SmallVectorImpl<DIEAbbrevData> &AbbrevData = Abbrev.getData();
+
+ // Size the DIE attribute values.
+ for (unsigned i = 0, N = Values.size(); i < N; ++i)
+ // Size attribute value.
+ Offset += Values[i]->SizeOf(Asm, AbbrevData[i].getForm());
+
+ // Get the children.
+ const auto &Children = Die.getChildren();
+
+ // Size the DIE children if any.
+ if (!Children.empty()) {
+ assert(Abbrev.hasChildren() && "Children flag not set");
+
+ for (auto &Child : Children)
+ Offset = computeSizeAndOffset(*Child, Offset);
+
+ // End of children marker.
+ Offset += sizeof(int8_t);
+ }
+
+ Die.setSize(Offset - Die.getOffset());
+ return Offset;
+}
+void DwarfFile::emitAbbrevs(const MCSection *Section) {
+ // Check to see if it is worth the effort.
+ if (!Abbreviations.empty()) {
+ // Start the debug abbrev section.
+ Asm->OutStreamer.SwitchSection(Section);
+
+ // For each abbrevation.
+ for (const DIEAbbrev *Abbrev : Abbreviations) {
+ // Emit the abbrevations code (base 1 index.)
+ Asm->EmitULEB128(Abbrev->getNumber(), "Abbreviation Code");
+
+ // Emit the abbreviations data.
+ Abbrev->Emit(Asm);
+ }
+
+ // Mark end of abbreviations.
+ Asm->EmitULEB128(0, "EOM(3)");
+ }
+}
+
+// Emit strings into a string section.
+void DwarfFile::emitStrings(const MCSection *StrSection,
+ const MCSection *OffsetSection,
+ const MCSymbol *StrSecSym) {
+
+ if (StringPool.empty())
+ return;
+
+ // Start the dwarf str section.
+ Asm->OutStreamer.SwitchSection(StrSection);
+
+ // Get all of the string pool entries and put them in an array by their ID so
+ // we can sort them.
+ SmallVector<std::pair<unsigned, const StrPool::value_type *>, 64 > Entries;
+
+ for (const auto &I : StringPool)
+ Entries.push_back(std::make_pair(I.second.second, &I));
+
+ array_pod_sort(Entries.begin(), Entries.end());
+
+ for (const auto &Entry : Entries) {
+ // Emit a label for reference from debug information entries.
+ Asm->OutStreamer.EmitLabel(Entry.second->getValue().first);
+
+ // Emit the string itself with a terminating null byte.
+ Asm->OutStreamer.EmitBytes(StringRef(Entry.second->getKeyData(),
+ Entry.second->getKeyLength() + 1));
+ }
+
+ // If we've got an offset section go ahead and emit that now as well.
+ if (OffsetSection) {
+ Asm->OutStreamer.SwitchSection(OffsetSection);
+ unsigned offset = 0;
+ unsigned size = 4; // FIXME: DWARF64 is 8.
+ for (const auto &Entry : Entries) {
+ Asm->OutStreamer.EmitIntValue(offset, size);
+ offset += Entry.second->getKeyLength() + 1;
+ }
+ }
+}
+
+// Emit addresses into the section given.
+void DwarfFile::emitAddresses(const MCSection *AddrSection) {
+
+ if (AddressPool.empty())
+ return;
+
+ // Start the dwarf addr section.
+ Asm->OutStreamer.SwitchSection(AddrSection);
+
+ // Order the address pool entries by ID
+ SmallVector<const MCExpr *, 64> Entries(AddressPool.size());
+
+ for (const auto &I : AddressPool)
+ Entries[I.second.Number] =
+ I.second.TLS
+ ? Asm->getObjFileLowering().getDebugThreadLocalSymbol(I.first)
+ : MCSymbolRefExpr::Create(I.first, Asm->OutContext);
+
+ for (const MCExpr *Entry : Entries)
+ Asm->OutStreamer.EmitValue(Entry, Asm->getDataLayout().getPointerSize());
+}
+}
--- /dev/null
+//===-- llvm/CodeGen/DwarfFile.h - Dwarf Debug Framework -------*- C++ -*--===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef CODEGEN_ASMPRINTER_DWARFFILE_H__
+#define CODEGEN_ASMPRINTER_DWARFFILE_H__
+
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/FoldingSet.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/ADT/StringMap.h"
+#include "llvm/Support/Allocator.h"
+
+#include <vector>
+#include <string>
+#include <memory>
+
+namespace llvm {
+class AsmPrinter;
+class DwarfUnit;
+class DIEAbbrev;
+class MCSymbol;
+class DIE;
+class StringRef;
+class DwarfDebug;
+class MCSection;
+class DwarfFile {
+ // Target of Dwarf emission, used for sizing of abbreviations.
+ AsmPrinter *Asm;
+
+ // Used to uniquely define abbreviations.
+ FoldingSet<DIEAbbrev> AbbreviationsSet;
+
+ // A list of all the unique abbreviations in use.
+ std::vector<DIEAbbrev *> Abbreviations;
+
+ // A pointer to all units in the section.
+ SmallVector<std::unique_ptr<DwarfUnit>, 1> CUs;
+
+ // Collection of strings for this unit and assorted symbols.
+ // A String->Symbol mapping of strings used by indirect
+ // references.
+ typedef StringMap<std::pair<MCSymbol *, unsigned>, BumpPtrAllocator &>
+ StrPool;
+ StrPool StringPool;
+ unsigned NextStringPoolNumber;
+ std::string StringPref;
+
+ struct AddressPoolEntry {
+ unsigned Number;
+ bool TLS;
+ AddressPoolEntry(unsigned Number, bool TLS) : Number(Number), TLS(TLS) {}
+ };
+ // Collection of addresses for this unit and assorted labels.
+ // A Symbol->unsigned mapping of addresses used by indirect
+ // references.
+ typedef DenseMap<const MCSymbol *, AddressPoolEntry> AddrPool;
+ AddrPool AddressPool;
+
+public:
+ DwarfFile(AsmPrinter *AP, const char *Pref, BumpPtrAllocator &DA);
+
+ ~DwarfFile();
+
+ const SmallVectorImpl<std::unique_ptr<DwarfUnit>> &getUnits() { return CUs; }
+
+ /// \brief Compute the size and offset of a DIE given an incoming Offset.
+ unsigned computeSizeAndOffset(DIE &Die, unsigned Offset);
+
+ /// \brief Compute the size and offset of all the DIEs.
+ void computeSizeAndOffsets();
+
+ /// \brief Define a unique number for the abbreviation.
+ void assignAbbrevNumber(DIEAbbrev &Abbrev);
+
+ /// \brief Add a unit to the list of CUs.
+ void addUnit(std::unique_ptr<DwarfUnit> U);
+
+ /// \brief Emit all of the units to the section listed with the given
+ /// abbreviation section.
+ void emitUnits(DwarfDebug *DD, const MCSymbol *ASectionSym);
+
+ /// \brief Emit a set of abbreviations to the specific section.
+ void emitAbbrevs(const MCSection *);
+
+ /// \brief Emit all of the strings to the section given.
+ void emitStrings(const MCSection *StrSection,
+ const MCSection *OffsetSection = nullptr,
+ const MCSymbol *StrSecSym = nullptr);
+
+ /// \brief Emit all of the addresses to the section given.
+ void emitAddresses(const MCSection *AddrSection);
+
+ /// \brief Returns the entry into the start of the pool.
+ MCSymbol *getStringPoolSym();
+
+ /// \brief Returns an entry into the string pool with the given
+ /// string text.
+ MCSymbol *getStringPoolEntry(StringRef Str);
+
+ /// \brief Returns the index into the string pool with the given
+ /// string text.
+ unsigned getStringPoolIndex(StringRef Str);
+
+ /// \brief Returns the string pool.
+ StrPool *getStringPool() { return &StringPool; }
+
+ /// \brief Returns the index into the address pool with the given
+ /// label/symbol.
+ unsigned getAddrPoolIndex(const MCSymbol *Sym, bool TLS = false);
+
+ /// \brief Returns the address pool.
+ AddrPool *getAddrPool() { return &AddressPool; }
+};
+}
+#endif
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