119 lines
4.3 KiB
C++
119 lines
4.3 KiB
C++
//===- DWARFDebugPubTable.cpp ---------------------------------------------===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/DebugInfo/DWARF/DWARFDebugPubTable.h"
|
|
#include "llvm/DebugInfo/DWARF/DWARFDataExtractor.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/BinaryFormat/Dwarf.h"
|
|
#include "llvm/Support/DataExtractor.h"
|
|
#include "llvm/Support/Errc.h"
|
|
#include "llvm/Support/Format.h"
|
|
#include "llvm/Support/raw_ostream.h"
|
|
#include <cstdint>
|
|
|
|
using namespace llvm;
|
|
using namespace dwarf;
|
|
|
|
void DWARFDebugPubTable::extract(
|
|
DWARFDataExtractor Data, bool GnuStyle,
|
|
function_ref<void(Error)> RecoverableErrorHandler) {
|
|
this->GnuStyle = GnuStyle;
|
|
Sets.clear();
|
|
uint64_t Offset = 0;
|
|
while (Data.isValidOffset(Offset)) {
|
|
uint64_t SetOffset = Offset;
|
|
Sets.push_back({});
|
|
Set &NewSet = Sets.back();
|
|
|
|
DataExtractor::Cursor C(Offset);
|
|
std::tie(NewSet.Length, NewSet.Format) = Data.getInitialLength(C);
|
|
if (!C) {
|
|
// Drop the newly added set because it does not contain anything useful
|
|
// to dump.
|
|
Sets.pop_back();
|
|
RecoverableErrorHandler(createStringError(
|
|
errc::invalid_argument,
|
|
"name lookup table at offset 0x%" PRIx64 " parsing failed: %s",
|
|
SetOffset, toString(C.takeError()).c_str()));
|
|
return;
|
|
}
|
|
|
|
Offset = C.tell() + NewSet.Length;
|
|
DWARFDataExtractor SetData(Data, Offset);
|
|
const unsigned OffsetSize = dwarf::getDwarfOffsetByteSize(NewSet.Format);
|
|
|
|
NewSet.Version = SetData.getU16(C);
|
|
NewSet.Offset = SetData.getRelocatedValue(C, OffsetSize);
|
|
NewSet.Size = SetData.getUnsigned(C, OffsetSize);
|
|
|
|
if (!C) {
|
|
// Preserve the newly added set because at least some fields of the header
|
|
// are read and can be dumped.
|
|
RecoverableErrorHandler(
|
|
createStringError(errc::invalid_argument,
|
|
"name lookup table at offset 0x%" PRIx64
|
|
" does not have a complete header: %s",
|
|
SetOffset, toString(C.takeError()).c_str()));
|
|
continue;
|
|
}
|
|
|
|
while (C) {
|
|
uint64_t DieRef = SetData.getUnsigned(C, OffsetSize);
|
|
if (DieRef == 0)
|
|
break;
|
|
uint8_t IndexEntryValue = GnuStyle ? SetData.getU8(C) : 0;
|
|
StringRef Name = SetData.getCStrRef(C);
|
|
if (C)
|
|
NewSet.Entries.push_back(
|
|
{DieRef, PubIndexEntryDescriptor(IndexEntryValue), Name});
|
|
}
|
|
|
|
if (!C) {
|
|
RecoverableErrorHandler(createStringError(
|
|
errc::invalid_argument,
|
|
"name lookup table at offset 0x%" PRIx64 " parsing failed: %s",
|
|
SetOffset, toString(C.takeError()).c_str()));
|
|
continue;
|
|
}
|
|
if (C.tell() != Offset)
|
|
RecoverableErrorHandler(createStringError(
|
|
errc::invalid_argument,
|
|
"name lookup table at offset 0x%" PRIx64
|
|
" has a terminator at offset 0x%" PRIx64
|
|
" before the expected end at 0x%" PRIx64,
|
|
SetOffset, C.tell() - OffsetSize, Offset - OffsetSize));
|
|
}
|
|
}
|
|
|
|
void DWARFDebugPubTable::dump(raw_ostream &OS) const {
|
|
for (const Set &S : Sets) {
|
|
int OffsetDumpWidth = 2 * dwarf::getDwarfOffsetByteSize(S.Format);
|
|
OS << "length = " << format("0x%0*" PRIx64, OffsetDumpWidth, S.Length);
|
|
OS << ", format = " << dwarf::FormatString(S.Format);
|
|
OS << ", version = " << format("0x%04x", S.Version);
|
|
OS << ", unit_offset = "
|
|
<< format("0x%0*" PRIx64, OffsetDumpWidth, S.Offset);
|
|
OS << ", unit_size = " << format("0x%0*" PRIx64, OffsetDumpWidth, S.Size)
|
|
<< '\n';
|
|
OS << (GnuStyle ? "Offset Linkage Kind Name\n"
|
|
: "Offset Name\n");
|
|
|
|
for (const Entry &E : S.Entries) {
|
|
OS << format("0x%0*" PRIx64 " ", OffsetDumpWidth, E.SecOffset);
|
|
if (GnuStyle) {
|
|
StringRef EntryLinkage =
|
|
GDBIndexEntryLinkageString(E.Descriptor.Linkage);
|
|
StringRef EntryKind = dwarf::GDBIndexEntryKindString(E.Descriptor.Kind);
|
|
OS << format("%-8s", EntryLinkage.data()) << ' '
|
|
<< format("%-8s", EntryKind.data()) << ' ';
|
|
}
|
|
OS << '\"' << E.Name << "\"\n";
|
|
}
|
|
}
|
|
}
|