forked from OSchip/llvm-project
77 lines
2.9 KiB
C++
77 lines
2.9 KiB
C++
//===- DWARFDebugPubTable.cpp ---------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/DebugInfo/DWARF/DWARFDebugPubTable.h"
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#include "llvm/DebugInfo/DWARF/DWARFDataExtractor.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/BinaryFormat/Dwarf.h"
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#include "llvm/Support/DataExtractor.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cstdint>
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using namespace llvm;
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using namespace dwarf;
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DWARFDebugPubTable::DWARFDebugPubTable(const DWARFObject &Obj,
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const DWARFSection &Sec,
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bool LittleEndian, bool GnuStyle)
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: GnuStyle(GnuStyle) {
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DWARFDataExtractor PubNames(Obj, Sec, LittleEndian, 0);
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uint64_t Offset = 0;
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while (PubNames.isValidOffset(Offset)) {
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Sets.push_back({});
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Set &SetData = Sets.back();
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std::tie(SetData.Length, SetData.Format) =
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PubNames.getInitialLength(&Offset);
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const unsigned OffsetSize = dwarf::getDwarfOffsetByteSize(SetData.Format);
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SetData.Version = PubNames.getU16(&Offset);
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SetData.Offset = PubNames.getRelocatedValue(OffsetSize, &Offset);
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SetData.Size = PubNames.getUnsigned(&Offset, OffsetSize);
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while (Offset < Sec.Data.size()) {
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uint64_t DieRef = PubNames.getUnsigned(&Offset, OffsetSize);
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if (DieRef == 0)
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break;
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uint8_t IndexEntryValue = GnuStyle ? PubNames.getU8(&Offset) : 0;
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StringRef Name = PubNames.getCStrRef(&Offset);
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SetData.Entries.push_back(
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{DieRef, PubIndexEntryDescriptor(IndexEntryValue), Name});
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}
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}
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}
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void DWARFDebugPubTable::dump(raw_ostream &OS) const {
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for (const Set &S : Sets) {
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int OffsetDumpWidth = 2 * dwarf::getDwarfOffsetByteSize(S.Format);
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OS << "length = " << format("0x%0*" PRIx64, OffsetDumpWidth, S.Length);
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OS << ", format = " << dwarf::FormatString(S.Format);
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OS << ", version = " << format("0x%04x", S.Version);
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OS << ", unit_offset = "
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<< format("0x%0*" PRIx64, OffsetDumpWidth, S.Offset);
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OS << ", unit_size = " << format("0x%0*" PRIx64, OffsetDumpWidth, S.Size)
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<< '\n';
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OS << (GnuStyle ? "Offset Linkage Kind Name\n"
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: "Offset Name\n");
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for (const Entry &E : S.Entries) {
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OS << format("0x%0*" PRIx64 " ", OffsetDumpWidth, E.SecOffset);
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if (GnuStyle) {
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StringRef EntryLinkage =
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GDBIndexEntryLinkageString(E.Descriptor.Linkage);
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StringRef EntryKind = dwarf::GDBIndexEntryKindString(E.Descriptor.Kind);
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OS << format("%-8s", EntryLinkage.data()) << ' '
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<< format("%-8s", EntryKind.data()) << ' ';
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}
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OS << '\"' << E.Name << "\"\n";
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}
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}
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}
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