diff options
Diffstat (limited to 'lib/DebugInfo/DWARFAcceleratorTable.cpp')
-rw-r--r-- | lib/DebugInfo/DWARFAcceleratorTable.cpp | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/lib/DebugInfo/DWARFAcceleratorTable.cpp b/lib/DebugInfo/DWARFAcceleratorTable.cpp deleted file mode 100644 index 703274d..0000000 --- a/lib/DebugInfo/DWARFAcceleratorTable.cpp +++ /dev/null @@ -1,133 +0,0 @@ -//===--- DWARFAcceleratorTable.cpp ----------------------------------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// - -#include "DWARFAcceleratorTable.h" - -#include "llvm/Support/Dwarf.h" -#include "llvm/Support/Format.h" -#include "llvm/Support/raw_ostream.h" - -namespace llvm { - -bool DWARFAcceleratorTable::extract() { - uint32_t Offset = 0; - - // Check that we can at least read the header. - if (!AccelSection.isValidOffset(offsetof(Header, HeaderDataLength)+4)) - return false; - - Hdr.Magic = AccelSection.getU32(&Offset); - Hdr.Version = AccelSection.getU16(&Offset); - Hdr.HashFunction = AccelSection.getU16(&Offset); - Hdr.NumBuckets = AccelSection.getU32(&Offset); - Hdr.NumHashes = AccelSection.getU32(&Offset); - Hdr.HeaderDataLength = AccelSection.getU32(&Offset); - - // Check that we can read all the hashes and offsets from the - // section (see SourceLevelDebugging.rst for the structure of the index). - if (!AccelSection.isValidOffset(sizeof(Hdr) + Hdr.HeaderDataLength + - Hdr.NumBuckets*4 + Hdr.NumHashes*8)) - return false; - - HdrData.DIEOffsetBase = AccelSection.getU32(&Offset); - uint32_t NumAtoms = AccelSection.getU32(&Offset); - - for (unsigned i = 0; i < NumAtoms; ++i) { - uint16_t AtomType = AccelSection.getU16(&Offset); - uint16_t AtomForm = AccelSection.getU16(&Offset); - HdrData.Atoms.push_back(std::make_pair(AtomType, AtomForm)); - } - - return true; -} - -void DWARFAcceleratorTable::dump(raw_ostream &OS) const { - // Dump the header. - OS << "Magic = " << format("0x%08x", Hdr.Magic) << '\n' - << "Version = " << format("0x%04x", Hdr.Version) << '\n' - << "Hash function = " << format("0x%08x", Hdr.HashFunction) << '\n' - << "Bucket count = " << Hdr.NumBuckets << '\n' - << "Hashes count = " << Hdr.NumHashes << '\n' - << "HeaderData length = " << Hdr.HeaderDataLength << '\n' - << "DIE offset base = " << HdrData.DIEOffsetBase << '\n' - << "Number of atoms = " << HdrData.Atoms.size() << '\n'; - - unsigned i = 0; - SmallVector<DWARFFormValue, 3> AtomForms; - for (const auto &Atom: HdrData.Atoms) { - OS << format("Atom[%d] Type: ", i++); - if (const char *TypeString = dwarf::AtomTypeString(Atom.first)) - OS << TypeString; - else - OS << format("DW_ATOM_Unknown_0x%x", Atom.first); - OS << " Form: "; - if (const char *FormString = dwarf::FormEncodingString(Atom.second)) - OS << FormString; - else - OS << format("DW_FORM_Unknown_0x%x", Atom.second); - OS << '\n'; - AtomForms.push_back(DWARFFormValue(Atom.second)); - } - - // Now go through the actual tables and dump them. - uint32_t Offset = sizeof(Hdr) + Hdr.HeaderDataLength; - unsigned HashesBase = Offset + Hdr.NumBuckets * 4; - unsigned OffsetsBase = HashesBase + Hdr.NumHashes * 4; - - for (unsigned Bucket = 0; Bucket < Hdr.NumBuckets; ++Bucket) { - unsigned Index = AccelSection.getU32(&Offset); - - OS << format("Bucket[%d]\n", Bucket); - if (Index == UINT32_MAX) { - OS << " EMPTY\n"; - continue; - } - - for (unsigned HashIdx = Index; HashIdx < Hdr.NumHashes; ++HashIdx) { - unsigned HashOffset = HashesBase + HashIdx*4; - unsigned OffsetsOffset = OffsetsBase + HashIdx*4; - uint32_t Hash = AccelSection.getU32(&HashOffset); - - if (Hash % Hdr.NumBuckets != Bucket) - break; - - unsigned DataOffset = AccelSection.getU32(&OffsetsOffset); - OS << format(" Hash = 0x%08x Offset = 0x%08x\n", Hash, DataOffset); - if (!AccelSection.isValidOffset(DataOffset)) { - OS << " Invalid section offset\n"; - continue; - } - while (AccelSection.isValidOffsetForDataOfSize(DataOffset, 4)) { - unsigned StringOffset = AccelSection.getU32(&DataOffset); - RelocAddrMap::const_iterator Reloc = Relocs.find(DataOffset-4); - if (Reloc != Relocs.end()) - StringOffset += Reloc->second.second; - if (!StringOffset) - break; - OS << format(" Name: %08x \"%s\"\n", StringOffset, - StringSection.getCStr(&StringOffset)); - unsigned NumData = AccelSection.getU32(&DataOffset); - for (unsigned Data = 0; Data < NumData; ++Data) { - OS << format(" Data[%d] => ", Data); - unsigned i = 0; - for (auto &Atom : AtomForms) { - OS << format("{Atom[%d]: ", i++); - if (Atom.extractValue(AccelSection, &DataOffset, nullptr)) - Atom.dump(OS, nullptr); - else - OS << "Error extracting the value"; - OS << "} "; - } - OS << '\n'; - } - } - } - } -} -} |