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📄 AArch64TargetParser.cpp(8 KB)
📄 ABIBreak.cpp(811 B)
📄 AMDGPUMetadata.cpp(9.37 KB)
📄 APFloat.cpp(155.26 KB)
📄 APInt.cpp(98.08 KB)
📄 APSInt.cpp(1.44 KB)
📄 ARMAttributeParser.cpp(13.94 KB)
📄 ARMBuildAttrs.cpp(3.45 KB)
📄 ARMTargetParser.cpp(18.09 KB)
📄 ARMWinEH.cpp(1.08 KB)
📄 Allocator.cpp(1.35 KB)
📄 Atomic.cpp(1.6 KB)
📄 BinaryStreamError.cpp(1.76 KB)
📄 BinaryStreamReader.cpp(5.24 KB)
📄 BinaryStreamRef.cpp(4.76 KB)
📄 BinaryStreamWriter.cpp(3.36 KB)
📄 BlockFrequency.cpp(2.12 KB)
📄 BranchProbability.cpp(3.44 KB)
📄 BuryPointer.cpp(1.11 KB)
📄 COM.cpp(737 B)
📄 COPYRIGHT.regex(2.65 KB)
📄 CRC.cpp(5.23 KB)
📄 CachePruning.cpp(10.33 KB)
📄 Chrono.cpp(3.17 KB)
📄 CodeGenCoverage.cpp(3.61 KB)
📄 CommandLine.cpp(89.06 KB)
📄 Compression.cpp(3.84 KB)
📄 ConvertUTF.cpp(27.27 KB)
📄 ConvertUTFWrapper.cpp(8.66 KB)
📄 CrashRecoveryContext.cpp(15.45 KB)
📄 DAGDeltaAlgorithm.cpp(12.47 KB)
📄 DJB.cpp(2.71 KB)
📄 DataExtractor.cpp(7.25 KB)
📄 Debug.cpp(5.64 KB)
📄 DebugCounter.cpp(4.95 KB)
📄 DeltaAlgorithm.cpp(3.41 KB)
📄 DynamicLibrary.cpp(6.25 KB)
📄 ELFAttributeParser.cpp(7.27 KB)
📄 ELFAttributes.cpp(1.27 KB)
📄 Errno.cpp(2.18 KB)
📄 Error.cpp(4.72 KB)
📄 ErrorHandling.cpp(11.08 KB)
📄 ExtensibleRTTI.cpp(446 B)
📄 FileCheck.cpp(95.77 KB)
📄 FileCheckImpl.h(34.14 KB)
📄 FileCollector.cpp(9.01 KB)
📄 FileOutputBuffer.cpp(6.62 KB)
📄 FileUtilities.cpp(10.81 KB)
📄 FoldingSet.cpp(15.89 KB)
📄 FormatVariadic.cpp(5.17 KB)
📄 FormattedStream.cpp(5.29 KB)
📄 GlobPattern.cpp(5 KB)
📄 GraphWriter.cpp(9.21 KB)
📄 Hashing.cpp(1.16 KB)
📄 Host.cpp(51.63 KB)
📄 InitLLVM.cpp(1.92 KB)
📄 IntEqClasses.cpp(2.18 KB)
📄 IntervalMap.cpp(4.4 KB)
📄 ItaniumManglingCanonicalizer.cpp(10.77 KB)
📄 JSON.cpp(19.1 KB)
📄 KnownBits.cpp(3.78 KB)
📄 LEB128.cpp(1.19 KB)
📄 LineIterator.cpp(2.61 KB)
📄 Locale.cpp(377 B)
📄 LockFileManager.cpp(10.64 KB)
📄 LowLevelType.cpp(2.09 KB)
📄 MD5.cpp(8.99 KB)
📄 ManagedStatic.cpp(2.37 KB)
📄 MathExtras.cpp(913 B)
📄 MemAlloc.cpp(1.01 KB)
📄 Memory.cpp(1.57 KB)
📄 MemoryBuffer.cpp(18.99 KB)
📄 NativeFormatting.cpp(7.54 KB)
📄 OptimizedStructLayout.cpp(16.7 KB)
📄 Optional.cpp(530 B)
📄 Parallel.cpp(5.08 KB)
📄 Path.cpp(36.52 KB)
📄 PluginLoader.cpp(1.63 KB)
📄 PrettyStackTrace.cpp(10.33 KB)
📄 Process.cpp(3.27 KB)
📄 Program.cpp(3.54 KB)
📄 RISCVAttributeParser.cpp(2.06 KB)
📄 RISCVAttributes.cpp(970 B)
📄 RWMutex.cpp(3.23 KB)
📄 RandomNumberGenerator.cpp(2.86 KB)
📄 Regex.cpp(6.38 KB)
📄 SHA1.cpp(10.43 KB)
📄 ScaledNumber.cpp(9.09 KB)
📄 ScopedPrinter.cpp(1.19 KB)
📄 Signals.cpp(8.35 KB)
📄 Signposts.cpp(3.24 KB)
📄 SmallPtrSet.cpp(9.21 KB)
📄 SmallVector.cpp(3.99 KB)
📄 SourceMgr.cpp(20.08 KB)
📄 SpecialCaseList.cpp(7.48 KB)
📄 Statistic.cpp(8.85 KB)
📄 StringExtras.cpp(4.34 KB)
📄 StringMap.cpp(9.31 KB)
📄 StringRef.cpp(17.41 KB)
📄 StringSaver.cpp(882 B)
📄 SuffixTree.cpp(7.23 KB)
📄 SymbolRemappingReader.cpp(2.94 KB)
📄 SystemUtils.cpp(1.06 KB)
📄 TarWriter.cpp(7.23 KB)
📄 TargetParser.cpp(9.86 KB)
📄 TargetRegistry.cpp(4.6 KB)
📄 ThreadLocal.cpp(1.68 KB)
📄 ThreadPool.cpp(4.4 KB)
📄 Threading.cpp(4.55 KB)
📄 TimeProfiler.cpp(11.63 KB)
📄 Timer.cpp(14.14 KB)
📄 ToolOutputFile.cpp(1.83 KB)
📄 TrigramIndex.cpp(3.24 KB)
📄 Triple.cpp(53.17 KB)
📄 Twine.cpp(4.6 KB)
📄 Unicode.cpp(20.14 KB)
📄 UnicodeCaseFold.cpp(15.32 KB)
📁 Unix
📄 Valgrind.cpp(1.6 KB)
📄 VersionTuple.cpp(2.74 KB)
📄 VirtualFileSystem.cpp(74.17 KB)
📄 Watchdog.cpp(738 B)
📁 Windows
📄 WithColor.cpp(4.35 KB)
📄 X86TargetParser.cpp(27.21 KB)
📄 YAMLParser.cpp(68.53 KB)
📄 YAMLTraits.cpp(28.37 KB)
📄 Z3Solver.cpp(31.44 KB)
📄 circular_raw_ostream.cpp(1.3 KB)
📄 raw_os_ostream.cpp(995 B)
📄 raw_ostream.cpp(28.97 KB)
📄 regcomp.c(39.42 KB)
📄 regengine.inc(26.49 KB)
📄 regerror.c(4.42 KB)
📄 regex2.h(6.82 KB)
📄 regex_impl.h(3.63 KB)
📄 regexec.c(5.71 KB)
📄 regfree.c(2.49 KB)
📄 regstrlcpy.c(1.56 KB)
📄 regutils.h(2.25 KB)
📄 xxhash.cpp(4.07 KB)

Editing: ELFAttributeParser.cpp

//===--- ELFAttributeParser.cpp - ELF Attribute Parser --------------------===//
//
// 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/Support/ELFAttributeParser.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/Support/Errc.h"
#include "llvm/Support/LEB128.h"
#include "llvm/Support/ScopedPrinter.h"

using namespace llvm;
using namespace llvm::ELFAttrs;

static const EnumEntry<unsigned> tagNames[] = {
    {"Tag_File", ELFAttrs::File},
    {"Tag_Section", ELFAttrs::Section},
    {"Tag_Symbol", ELFAttrs::Symbol},
};

Error ELFAttributeParser::parseStringAttribute(const char *name, unsigned tag,
                                               ArrayRef<const char *> strings) {
  uint64_t value = de.getULEB128(cursor);
  if (value >= strings.size()) {
    printAttribute(tag, value, "");
    return createStringError(errc::invalid_argument,
                             "unknown " + Twine(name) +
                                 " value: " + Twine(value));
  }
  printAttribute(tag, value, strings[value]);
  return Error::success();
}

Error ELFAttributeParser::integerAttribute(unsigned tag) {
  StringRef tagName =
      ELFAttrs::attrTypeAsString(tag, tagToStringMap, /*hasTagPrefix=*/false);
  uint64_t value = de.getULEB128(cursor);
  attributes.insert(std::make_pair(tag, value));

if (sw) {
    DictScope scope(*sw, "Attribute");
    sw->printNumber("Tag", tag);
    if (!tagName.empty())
      sw->printString("TagName", tagName);
    sw->printNumber("Value", value);
  }
  return Error::success();
}

Error ELFAttributeParser::stringAttribute(unsigned tag) {
  StringRef tagName =
      ELFAttrs::attrTypeAsString(tag, tagToStringMap, /*hasTagPrefix=*/false);
  StringRef desc = de.getCStrRef(cursor);
  attributesStr.insert(std::make_pair(tag, desc));

if (sw) {
    DictScope scope(*sw, "Attribute");
    sw->printNumber("Tag", tag);
    if (!tagName.empty())
      sw->printString("TagName", tagName);
    sw->printString("Value", desc);
  }
  return Error::success();
}

void ELFAttributeParser::printAttribute(unsigned tag, unsigned value,
                                        StringRef valueDesc) {
  attributes.insert(std::make_pair(tag, value));

if (sw) {
    StringRef tagName = ELFAttrs::attrTypeAsString(tag, tagToStringMap,
                                                   /*hasTagPrefix=*/false);
    DictScope as(*sw, "Attribute");
    sw->printNumber("Tag", tag);
    sw->printNumber("Value", value);
    if (!tagName.empty())
      sw->printString("TagName", tagName);
    if (!valueDesc.empty())
      sw->printString("Description", valueDesc);
  }
}

void ELFAttributeParser::parseIndexList(SmallVectorImpl<uint8_t> &indexList) {
  for (;;) {
    uint64_t value = de.getULEB128(cursor);
    if (!cursor || !value)
      break;
    indexList.push_back(value);
  }
}

Error ELFAttributeParser::parseAttributeList(uint32_t length) {
  uint64_t pos;
  uint64_t end = cursor.tell() + length;
  while ((pos = cursor.tell()) < end) {
    uint64_t tag = de.getULEB128(cursor);
    bool handled;
    if (Error e = handler(tag, handled))
      return e;

if (!handled) {
      if (tag < 32) {
        return createStringError(errc::invalid_argument,
                                 "invalid tag 0x" + Twine::utohexstr(tag) +
                                     " at offset 0x" + Twine::utohexstr(pos));
      }

if (tag % 2 == 0) {
        if (Error e = integerAttribute(tag))
          return e;
      } else {
        if (Error e = stringAttribute(tag))
          return e;
      }
    }
  }
  return Error::success();
}

Error ELFAttributeParser::parseSubsection(uint32_t length) {
  uint64_t end = cursor.tell() - sizeof(length) + length;
  StringRef vendorName = de.getCStrRef(cursor);
  if (sw) {
    sw->printNumber("SectionLength", length);
    sw->printString("Vendor", vendorName);
  }

// Ignore unrecognized vendor-name.
  if (vendorName.lower() != vendor)
    return createStringError(errc::invalid_argument,
                             "unrecognized vendor-name: " + vendorName);

while (cursor.tell() < end) {
    /// Tag_File | Tag_Section | Tag_Symbol   uleb128:byte-size
    uint8_t tag = de.getU8(cursor);
    uint32_t size = de.getU32(cursor);
    if (!cursor)
      return cursor.takeError();

if (sw) {
      sw->printEnum("Tag", tag, makeArrayRef(tagNames));
      sw->printNumber("Size", size);
    }
    if (size < 5)
      return createStringError(errc::invalid_argument,
                               "invalid attribute size " + Twine(size) +
                                   " at offset 0x" +
                                   Twine::utohexstr(cursor.tell() - 5));

StringRef scopeName, indexName;
    SmallVector<uint8_t, 8> indicies;
    switch (tag) {
    case ELFAttrs::File:
      scopeName = "FileAttributes";
      break;
    case ELFAttrs::Section:
      scopeName = "SectionAttributes";
      indexName = "Sections";
      parseIndexList(indicies);
      break;
    case ELFAttrs::Symbol:
      scopeName = "SymbolAttributes";
      indexName = "Symbols";
      parseIndexList(indicies);
      break;
    default:
      return createStringError(errc::invalid_argument,
                               "unrecognized tag 0x" + Twine::utohexstr(tag) +
                                   " at offset 0x" +
                                   Twine::utohexstr(cursor.tell() - 5));
    }

if (sw) {
      DictScope scope(*sw, scopeName);
      if (!indicies.empty())
        sw->printList(indexName, indicies);
      if (Error e = parseAttributeList(size - 5))
        return e;
    } else if (Error e = parseAttributeList(size - 5))
      return e;
  }
  return Error::success();
}

Error ELFAttributeParser::parse(ArrayRef<uint8_t> section,
                                support::endianness endian) {
  unsigned sectionNumber = 0;
  de = DataExtractor(section, endian == support::little, 0);

// For early returns, we have more specific errors, consume the Error in
  // cursor.
  struct ClearCursorError {
    DataExtractor::Cursor &cursor;
    ~ClearCursorError() { consumeError(cursor.takeError()); }
  } clear{cursor};

// Unrecognized format-version.
  uint8_t formatVersion = de.getU8(cursor);
  if (formatVersion != 'A')
    return createStringError(errc::invalid_argument,
                             "unrecognized format-version: 0x" +
                                 utohexstr(formatVersion));

while (!de.eof(cursor)) {
    uint32_t sectionLength = de.getU32(cursor);
    if (!cursor)
      return cursor.takeError();

if (sw) {
      sw->startLine() << "Section " << ++sectionNumber << " {\n";
      sw->indent();
    }

if (sectionLength < 4 || cursor.tell() - 4 + sectionLength > section.size())
      return createStringError(errc::invalid_argument,
                               "invalid section length " +
                                   Twine(sectionLength) + " at offset 0x" +
                                   utohexstr(cursor.tell() - 4));

if (Error e = parseSubsection(sectionLength))
      return e;
    if (sw) {
      sw->unindent();
      sw->startLine() << "}\n";
    }
  }

return cursor.takeError();
}

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Editing: ELFAttributeParser.cpp

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