DIDT_AppleNamespaces,
DIDT_AppleObjC,
DIDT_CUIndex,
- DIDT_GdbIndex,
DIDT_TUIndex,
};
#include "llvm/DebugInfo/DWARF/DWARFDebugLoc.h"
#include "llvm/DebugInfo/DWARF/DWARFDebugMacro.h"
#include "llvm/DebugInfo/DWARF/DWARFDebugRangeList.h"
-#include "llvm/DebugInfo/DWARF/DWARFGdbIndex.h"
#include "llvm/DebugInfo/DWARF/DWARFSection.h"
#include "llvm/DebugInfo/DWARF/DWARFTypeUnit.h"
DWARFUnitSection<DWARFCompileUnit> CUs;
std::deque<DWARFUnitSection<DWARFTypeUnit>> TUs;
std::unique_ptr<DWARFUnitIndex> CUIndex;
- std::unique_ptr<DWARFGdbIndex> GdbIndex;
std::unique_ptr<DWARFUnitIndex> TUIndex;
std::unique_ptr<DWARFDebugAbbrev> Abbrev;
std::unique_ptr<DWARFDebugLoc> Loc;
}
const DWARFUnitIndex &getCUIndex();
- DWARFGdbIndex &getGdbIndex();
const DWARFUnitIndex &getTUIndex();
/// Get a pointer to the parsed DebugAbbrev object.
virtual const DWARFSection& getAppleNamespacesSection() = 0;
virtual const DWARFSection& getAppleObjCSection() = 0;
virtual StringRef getCUIndexSection() = 0;
- virtual StringRef getGdbIndexSection() = 0;
virtual StringRef getTUIndexSection() = 0;
static bool isSupportedVersion(unsigned version) {
DWARFSection AppleNamespacesSection;
DWARFSection AppleObjCSection;
StringRef CUIndexSection;
- StringRef GdbIndexSection;
StringRef TUIndexSection;
SmallVector<SmallString<32>, 4> UncompressedSections;
return AddrSection;
}
StringRef getCUIndexSection() override { return CUIndexSection; }
- StringRef getGdbIndexSection() override { return GdbIndexSection; }
StringRef getTUIndexSection() override { return TUIndexSection; }
};
+++ /dev/null
-//===-- DWARFGdbIndex.h -----------------------------------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_LIB_DEBUGINFO_DWARFGDBINDEX_H
-#define LLVM_LIB_DEBUGINFO_DWARFGDBINDEX_H
-
-#include "llvm/Support/DataExtractor.h"
-#include "llvm/Support/Error.h"
-#include "llvm/Support/raw_ostream.h"
-
-namespace llvm {
-class DWARFGdbIndex {
- uint32_t Version;
-
- uint32_t CuListOffset;
- uint32_t AddressAreaOffset;
- uint32_t SymbolTableOffset;
- uint32_t ConstantPoolOffset;
-
- struct CompUnitEntry {
- uint64_t Offset; // Offset of a CU in the .debug_info section.
- uint64_t Length; // Length of that CU.
- };
- SmallVector<CompUnitEntry, 0> CuList;
-
- struct AddressEntry {
- uint64_t LowAddress; // The low address.
- uint64_t HighAddress; // The high address.
- uint32_t CuIndex; // The CU index.
- };
- SmallVector<AddressEntry, 0> AddressArea;
-
- struct SymTableEntry {
- uint32_t NameOffset; // Offset of the symbol's name in the constant pool.
- uint32_t VecOffset; // Offset of the CU vector in the constant pool.
- };
- SmallVector<SymTableEntry, 0> SymbolTable;
-
- // Each value is CU index + attributes.
- SmallVector<std::pair<uint32_t, SmallVector<uint32_t, 0>>, 0>
- ConstantPoolVectors;
-
- StringRef ConstantPoolStrings;
- uint32_t StringPoolOffset;
-
- void dumpCUList(raw_ostream &OS) const;
- void dumpAddressArea(raw_ostream &OS) const;
- void dumpSymbolTable(raw_ostream &OS) const;
- void dumpConstantPool(raw_ostream &OS) const;
-
- bool parseImpl(DataExtractor Data);
-
-public:
- void dump(raw_ostream &OS);
- void parse(DataExtractor Data);
-
- bool HasContent = false;
- bool HasError = false;
-};
-}
-
-#endif // LLVM_LIB_DEBUGINFO_DWARFGDBINDEX_H
DWARFDebugMacro.cpp
DWARFDebugRangeList.cpp
DWARFFormValue.cpp
- DWARFGdbIndex.cpp
DWARFTypeUnit.cpp
DWARFUnitIndex.cpp
DWARFUnit.cpp
}
}
- if ((DumpType == DIDT_All || DumpType == DIDT_GdbIndex) &&
- !getGdbIndexSection().empty()) {
- OS << "\n.gnu_index contents:\n";
- getGdbIndex().dump(OS);
- }
-
if (DumpType == DIDT_All || DumpType == DIDT_AppleNames)
dumpAccelSection(OS, "apple_names", getAppleNamesSection(),
getStringSection(), isLittleEndian());
return *TUIndex;
}
-DWARFGdbIndex &DWARFContext::getGdbIndex() {
- if (GdbIndex)
- return *GdbIndex;
-
- DataExtractor GdbIndexData(getGdbIndexSection(), true /*LE*/, 0);
- GdbIndex = llvm::make_unique<DWARFGdbIndex>();
- GdbIndex->parse(GdbIndexData);
- return *GdbIndex;
-}
-
const DWARFDebugAbbrev *DWARFContext::getDebugAbbrev() {
if (Abbrev)
return Abbrev.get();
.Case("apple_objc", &AppleObjCSection.Data)
.Case("debug_cu_index", &CUIndexSection)
.Case("debug_tu_index", &TUIndexSection)
- .Case("gdb_index", &GdbIndexSection)
// Any more debug info sections go here.
.Default(nullptr);
if (SectionData) {
+++ /dev/null
-//===-- DWARFGdbIndex.cpp -------------------------------------------------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/DebugInfo/DWARF/DWARFGdbIndex.h"
-#include "llvm/ADT/Twine.h"
-#include "llvm/Support/ErrorHandling.h"
-#include "llvm/Support/Format.h"
-
-using namespace llvm;
-
-// .gdb_index section format reference:
-// https://sourceware.org/gdb/onlinedocs/gdb/Index-Section-Format.html
-
-void DWARFGdbIndex::dumpCUList(raw_ostream &OS) const {
- OS << format("\n CU list offset = 0x%x, has %zu entries:", CuListOffset,
- CuList.size())
- << '\n';
- uint32_t I = 0;
- for (const CompUnitEntry &CU : CuList)
- OS << format(" %d: Offset = 0x%llx, Length = 0x%llx\n", I++, CU.Offset,
- CU.Length);
-}
-
-void DWARFGdbIndex::dumpAddressArea(raw_ostream &OS) const {
- OS << format("\n Address area offset = 0x%x, has %zu entries:",
- AddressAreaOffset, AddressArea.size())
- << '\n';
- for (const AddressEntry &Addr : AddressArea)
- OS << format(
- " Low address = 0x%llx, High address = 0x%llx, CU index = %d\n",
- Addr.LowAddress, Addr.HighAddress, Addr.CuIndex);
-}
-
-void DWARFGdbIndex::dumpSymbolTable(raw_ostream &OS) const {
- OS << format("\n Symbol table offset = 0x%x, size = %zu, filled slots:",
- SymbolTableOffset, SymbolTable.size())
- << '\n';
- uint32_t I = -1;
- for (const SymTableEntry &E : SymbolTable) {
- ++I;
- if (!E.NameOffset && !E.VecOffset)
- continue;
-
- OS << format(" %d: Name offset = 0x%x, CU vector offset = 0x%x\n", I,
- E.NameOffset, E.VecOffset);
-
- StringRef Name = ConstantPoolStrings.substr(
- ConstantPoolOffset - StringPoolOffset + E.NameOffset);
-
- auto CuVector = std::find_if(
- ConstantPoolVectors.begin(), ConstantPoolVectors.end(),
- [&](const std::pair<uint32_t, SmallVector<uint32_t, 0>> &V) {
- return V.first == E.VecOffset;
- });
- assert(CuVector != ConstantPoolVectors.end() && "Invalid symbol table");
- uint32_t CuVectorId = CuVector - ConstantPoolVectors.begin();
- OS << format(" String name: %s, CU vector index: %d\n", Name.data(),
- CuVectorId);
- }
-}
-
-void DWARFGdbIndex::dumpConstantPool(raw_ostream &OS) const {
- OS << format("\n Constant pool offset = 0x%x, has %zu CU vectors:",
- ConstantPoolOffset, ConstantPoolVectors.size());
- uint32_t I = 0;
- for (const auto &V : ConstantPoolVectors) {
- OS << format("\n %d(0x%x): ", I++, V.first);
- for (uint32_t Val : V.second)
- OS << format("0x%x ", Val);
- }
- OS << '\n';
-}
-
-void DWARFGdbIndex::dump(raw_ostream &OS) {
- if (HasError) {
- OS << "\n<error parsing>\n";
- return;
- }
-
- if (HasContent) {
- OS << " Version = " << Version << '\n';
- dumpCUList(OS);
- dumpAddressArea(OS);
- dumpSymbolTable(OS);
- dumpConstantPool(OS);
- }
-}
-
-bool DWARFGdbIndex::parseImpl(DataExtractor Data) {
- uint32_t Offset = 0;
-
- // Only version 7 is supported at this moment.
- Version = Data.getU32(&Offset);
- if (Version != 7)
- return false;
-
- CuListOffset = Data.getU32(&Offset);
- uint32_t CuTypesOffset = Data.getU32(&Offset);
- AddressAreaOffset = Data.getU32(&Offset);
- SymbolTableOffset = Data.getU32(&Offset);
- ConstantPoolOffset = Data.getU32(&Offset);
-
- if (Offset != CuListOffset)
- return false;
-
- uint32_t CuListSize = (CuTypesOffset - CuListOffset) / 16;
- CuList.reserve(CuListSize);
- for (uint32_t i = 0; i < CuListSize; ++i) {
- uint64_t CuOffset = Data.getU64(&Offset);
- uint64_t CuLength = Data.getU64(&Offset);
- CuList.push_back({CuOffset, CuLength});
- }
-
- // CU Types are no longer needed as DWARF skeleton type units never made it
- // into the standard.
- uint32_t CuTypesListSize = (AddressAreaOffset - CuTypesOffset) / 24;
- if (CuTypesListSize != 0)
- return false;
-
- uint32_t AddressAreaSize = (SymbolTableOffset - AddressAreaOffset) / 20;
- AddressArea.reserve(AddressAreaSize);
- for (uint32_t i = 0; i < AddressAreaSize; ++i) {
- uint64_t LowAddress = Data.getU64(&Offset);
- uint64_t HighAddress = Data.getU64(&Offset);
- uint32_t CuIndex = Data.getU32(&Offset);
- AddressArea.push_back({LowAddress, HighAddress, CuIndex});
- }
-
- // The symbol table. This is an open addressed hash table. The size of the
- // hash table is always a power of 2.
- // Each slot in the hash table consists of a pair of offset_type values. The
- // first value is the offset of the symbol's name in the constant pool. The
- // second value is the offset of the CU vector in the constant pool.
- // If both values are 0, then this slot in the hash table is empty. This is ok
- // because while 0 is a valid constant pool index, it cannot be a valid index
- // for both a string and a CU vector.
- uint32_t SymTableSize = (ConstantPoolOffset - SymbolTableOffset) / 8;
- SymbolTable.reserve(SymTableSize);
- uint32_t CuVectorsTotal = 0;
- for (uint32_t i = 0; i < SymTableSize; ++i) {
- uint32_t NameOffset = Data.getU32(&Offset);
- uint32_t CuVecOffset = Data.getU32(&Offset);
- SymbolTable.push_back({NameOffset, CuVecOffset});
- if (NameOffset || CuVecOffset)
- ++CuVectorsTotal;
- }
-
- // The constant pool. CU vectors are stored first, followed by strings.
- // The first value is the number of CU indices in the vector. Each subsequent
- // value is the index and symbol attributes of a CU in the CU list.
- for (uint32_t i = 0; i < CuVectorsTotal; ++i) {
- ConstantPoolVectors.emplace_back(0, SmallVector<uint32_t, 0>());
- auto &Vec = ConstantPoolVectors.back();
- Vec.first = Offset - ConstantPoolOffset;
-
- uint32_t Num = Data.getU32(&Offset);
- for (uint32_t j = 0; j < Num; ++j)
- Vec.second.push_back(Data.getU32(&Offset));
- }
-
- ConstantPoolStrings = Data.getData().drop_front(Offset);
- StringPoolOffset = Offset;
- return true;
-}
-
-void DWARFGdbIndex::parse(DataExtractor Data) {
- HasContent = !Data.getData().empty();
- HasError = HasContent && !parseImpl(Data);
-}
+++ /dev/null
-RUN: llvm-dwarfdump -debug-dump=gdb_index %p/Inputs/dwarfdump-gdbindex-v7.elf-x86-64 | FileCheck %s
-
-; test.cpp:
-; int main() { return 0; }
-; test2.cpp:
-; int main2() { return 0; }
-; Compiled with:
-; gcc -gsplit-dwarf -c test.cpp test2.cpp
-; gold --gdb-index test.o test2.o -o dwarfdump-gdbindex-v7.elf-x86-64
-; gcc version 5.3.1 20160413, GNU gold (GNU Binutils for Ubuntu 2.26) 1.11
-; Info about gdb-index: https://sourceware.org/gdb/onlinedocs/gdb/Index-Section-Format.html
-
-; CHECK-LABEL: .gnu_index contents:
-; CHECK: Version = 7
-
-; CHECK: CU list offset = 0x18, has 2 entries:
-; CHECK-NEXT: 0: Offset = 0x0, Length = 0x34
-; CHECK-NEXT: 1: Offset = 0x34, Length = 0x34
-
-; CHECK: Address area offset = 0x38, has 2 entries:
-; CHECK-NEXT: Low address = 0x4000e8, High address = 0x4000f3, CU index = 0
-; CHECK-NEXT: Low address = 0x4000f3, High address = 0x4000fe, CU index = 1
-
-; CHECK: Symbol table offset = 0x60, size = 1024, filled slots:
-; CHECK-NEXT: 489: Name offset = 0x1d, CU vector offset = 0x0
-; CHECK-NEXT: String name: main, CU vector index: 0
-; CHECK-NEXT: 754: Name offset = 0x22, CU vector offset = 0x8
-; CHECK-NEXT: String name: int, CU vector index: 1
-; CHECK-NEXT: 956: Name offset = 0x26, CU vector offset = 0x14
-; CHECK-NEXT: String name: main2, CU vector index: 2
-
-; CHECK: Constant pool offset = 0x2060, has 3 CU vectors:
-; CHECK-NEXT: 0(0x0): 0x30000000
-; CHECK-NEXT: 1(0x8): 0x90000000 0x90000001
-; CHECK-NEXT: 2(0x14): 0x30000001
clEnumValN(DIDT_StrOffsetsDwo, "str_offsets.dwo",
".debug_str_offsets.dwo"),
clEnumValN(DIDT_CUIndex, "cu_index", ".debug_cu_index"),
- clEnumValN(DIDT_GdbIndex, "gdb_index", ".gdb_index"),
clEnumValN(DIDT_TUIndex, "tu_index", ".debug_tu_index"), clEnumValEnd));
static void error(StringRef Filename, std::error_code EC) {
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