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llvm-mirror/tools/llvm-readobj/llvm-readobj.cpp
Benjamin Kramer 87d13166c7 Make llvm::StringRef to std::string conversions explicit. 
This is how it should've been and brings it more in line with
std::string_view. There should be no functional change here.

This is mostly mechanical from a custom clang-tidy check, with a lot of
manual fixups. It uncovers a lot of minor inefficiencies.

This doesn't actually modify StringRef yet, I'll do that in a follow-up.
2020-01-28 23:25:25 +01:00

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//===- llvm-readobj.cpp - Dump contents of an Object File -----------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
//
// This is a tool similar to readelf, except it works on multiple object file
// formats. The main purpose of this tool is to provide detailed output suitable
// for FileCheck.
//
// Flags should be similar to readelf where supported, but the output format
// does not need to be identical. The point is to not make users learn yet
// another set of flags.
//
// Output should be specialized for each format where appropriate.
//
//===----------------------------------------------------------------------===//
#include "llvm-readobj.h"
#include "Error.h"
#include "ObjDumper.h"
#include "WindowsResourceDumper.h"
#include "llvm/DebugInfo/CodeView/GlobalTypeTableBuilder.h"
#include "llvm/DebugInfo/CodeView/MergingTypeTableBuilder.h"
#include "llvm/Object/Archive.h"
#include "llvm/Object/COFFImportFile.h"
#include "llvm/Object/MachOUniversal.h"
#include "llvm/Object/ObjectFile.h"
#include "llvm/Object/WindowsResource.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/DataTypes.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/FormatVariadic.h"
#include "llvm/Support/InitLLVM.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/ScopedPrinter.h"
#include "llvm/Support/TargetRegistry.h"
#include "llvm/Support/WithColor.h"
using namespace llvm;
using namespace llvm::object;
namespace opts {
cl::list<std::string> InputFilenames(cl::Positional,
cl::desc("<input object files>"),
cl::ZeroOrMore);
// --all, -a
cl::opt<bool>
All("all",
cl::desc("Equivalent to setting: --file-headers, --program-headers, "
"--section-headers, --symbols, --relocations, "
"--dynamic-table, --notes, --version-info, --unwind, "
"--section-groups and --elf-hash-histogram."));
cl::alias AllShort("a", cl::desc("Alias for --all"), cl::aliasopt(All));
// --dependent-libraries
cl::opt<bool>
DependentLibraries("dependent-libraries",
cl::desc("Display the dependent libraries section"));
// --headers -e
cl::opt<bool>
Headers("headers",
cl::desc("Equivalent to setting: --file-headers, --program-headers, "
"--section-headers"));
cl::alias HeadersShort("e", cl::desc("Alias for --headers"),
cl::aliasopt(Headers));
// --wide, -W
cl::opt<bool>
WideOutput("wide", cl::desc("Ignored for compatibility with GNU readelf"),
cl::Hidden);
cl::alias WideOutputShort("W",
cl::desc("Alias for --wide"),
cl::aliasopt(WideOutput));
// --file-headers, --file-header, -h
cl::opt<bool> FileHeaders("file-headers",
cl::desc("Display file headers "));
cl::alias FileHeadersShort("h", cl::desc("Alias for --file-headers"),
cl::aliasopt(FileHeaders), cl::NotHidden);
cl::alias FileHeadersSingular("file-header",
cl::desc("Alias for --file-headers"),
cl::aliasopt(FileHeaders));
// --section-headers, --sections, -S
// Also -s in llvm-readobj mode.
cl::opt<bool> SectionHeaders("section-headers",
cl::desc("Display all section headers."));
cl::alias SectionsShortUpper("S", cl::desc("Alias for --section-headers"),
cl::aliasopt(SectionHeaders), cl::NotHidden);
cl::alias SectionHeadersAlias("sections",
cl::desc("Alias for --section-headers"),
cl::aliasopt(SectionHeaders), cl::NotHidden);
// --section-relocations
// Also --sr in llvm-readobj mode.
cl::opt<bool> SectionRelocations("section-relocations",
cl::desc("Display relocations for each section shown."));
// --section-symbols
// Also --st in llvm-readobj mode.
cl::opt<bool> SectionSymbols("section-symbols",
cl::desc("Display symbols for each section shown."));
// --section-data
// Also --sd in llvm-readobj mode.
cl::opt<bool> SectionData("section-data",
cl::desc("Display section data for each section shown."));
// --section-mapping
cl::opt<cl::boolOrDefault>
SectionMapping("section-mapping",
cl::desc("Display the section to segment mapping."));
// --relocations, --relocs, -r
cl::opt<bool> Relocations("relocations",
cl::desc("Display the relocation entries in the file"));
cl::alias RelocationsShort("r", cl::desc("Alias for --relocations"),
cl::aliasopt(Relocations), cl::NotHidden);
cl::alias RelocationsGNU("relocs", cl::desc("Alias for --relocations"),
cl::aliasopt(Relocations));
// --notes, -n
cl::opt<bool> Notes("notes", cl::desc("Display the ELF notes in the file"));
cl::alias NotesShort("n", cl::desc("Alias for --notes"), cl::aliasopt(Notes));
// --dyn-relocations
cl::opt<bool> DynRelocs("dyn-relocations",
cl::desc("Display the dynamic relocation entries in the file"));
// --symbols
// Also -s in llvm-readelf mode, or -t in llvm-readobj mode.
cl::opt<bool>
Symbols("symbols",
cl::desc("Display the symbol table. Also display the dynamic "
"symbol table when using GNU output style for ELF"));
cl::alias SymbolsGNU("syms", cl::desc("Alias for --symbols"),
cl::aliasopt(Symbols));
// --dyn-symbols, --dyn-syms
// Also --dt in llvm-readobj mode.
cl::opt<bool> DynamicSymbols("dyn-symbols",
cl::desc("Display the dynamic symbol table"));
cl::alias DynSymsGNU("dyn-syms", cl::desc("Alias for --dyn-symbols"),
cl::aliasopt(DynamicSymbols));
// --hash-symbols
cl::opt<bool> HashSymbols(
"hash-symbols",
cl::desc("Display the dynamic symbols derived from the hash section"));
// --unwind, -u
cl::opt<bool> UnwindInfo("unwind",
cl::desc("Display unwind information"));
cl::alias UnwindInfoShort("u",
cl::desc("Alias for --unwind"),
cl::aliasopt(UnwindInfo));
// --dynamic-table, --dynamic, -d
cl::opt<bool> DynamicTable("dynamic-table",
cl::desc("Display the ELF .dynamic section table"));
cl::alias DynamicTableShort("d", cl::desc("Alias for --dynamic-table"),
cl::aliasopt(DynamicTable), cl::NotHidden);
cl::alias DynamicTableAlias("dynamic", cl::desc("Alias for --dynamic-table"),
cl::aliasopt(DynamicTable));
// --needed-libs
cl::opt<bool> NeededLibraries("needed-libs",
cl::desc("Display the needed libraries"));
// --program-headers, --segments, -l
cl::opt<bool> ProgramHeaders("program-headers",
cl::desc("Display ELF program headers"));
cl::alias ProgramHeadersShort("l", cl::desc("Alias for --program-headers"),
cl::aliasopt(ProgramHeaders), cl::NotHidden);
cl::alias SegmentsAlias("segments", cl::desc("Alias for --program-headers"),
cl::aliasopt(ProgramHeaders));
// --string-dump, -p
cl::list<std::string> StringDump("string-dump", cl::desc("<number|name>"),
cl::ZeroOrMore);
cl::alias StringDumpShort("p", cl::desc("Alias for --string-dump"),
cl::aliasopt(StringDump), cl::Prefix);
// --hex-dump, -x
cl::list<std::string> HexDump("hex-dump", cl::desc("<number|name>"),
cl::ZeroOrMore);
cl::alias HexDumpShort("x", cl::desc("Alias for --hex-dump"),
cl::aliasopt(HexDump), cl::Prefix);
// --demangle, -C
cl::opt<bool> Demangle("demangle",
cl::desc("Demangle symbol names in output"));
cl::alias DemangleShort("C", cl::desc("Alias for --demangle"),
cl::aliasopt(Demangle), cl::NotHidden);
// --hash-table
cl::opt<bool> HashTable("hash-table",
cl::desc("Display ELF hash table"));
// --gnu-hash-table
cl::opt<bool> GnuHashTable("gnu-hash-table",
cl::desc("Display ELF .gnu.hash section"));
// --expand-relocs
cl::opt<bool> ExpandRelocs("expand-relocs",
cl::desc("Expand each shown relocation to multiple lines"));
// --raw-relr
cl::opt<bool> RawRelr("raw-relr",
cl::desc("Do not decode relocations in SHT_RELR section, display raw contents"));
// --codeview
cl::opt<bool> CodeView("codeview",
cl::desc("Display CodeView debug information"));
// --codeview-merged-types
cl::opt<bool>
CodeViewMergedTypes("codeview-merged-types",
cl::desc("Display the merged CodeView type stream"));
// --codeview-ghash
cl::opt<bool> CodeViewEnableGHash(
"codeview-ghash",
cl::desc(
"Enable global hashing for CodeView type stream de-duplication"));
// --codeview-subsection-bytes
cl::opt<bool> CodeViewSubsectionBytes(
"codeview-subsection-bytes",
cl::desc("Dump raw contents of codeview debug sections and records"));
// --arch-specific
cl::opt<bool> ArchSpecificInfo("arch-specific",
cl::desc("Displays architecture-specific information, if there is any."));
cl::alias ArchSpecifcInfoShort("A", cl::desc("Alias for --arch-specific"),
cl::aliasopt(ArchSpecificInfo), cl::NotHidden);
// --coff-imports
cl::opt<bool>
COFFImports("coff-imports", cl::desc("Display the PE/COFF import table"));
// --coff-exports
cl::opt<bool>
COFFExports("coff-exports", cl::desc("Display the PE/COFF export table"));
// --coff-directives
cl::opt<bool>
COFFDirectives("coff-directives",
cl::desc("Display the PE/COFF .drectve section"));
// --coff-basereloc
cl::opt<bool>
COFFBaseRelocs("coff-basereloc",
cl::desc("Display the PE/COFF .reloc section"));
// --coff-debug-directory
cl::opt<bool>
COFFDebugDirectory("coff-debug-directory",
cl::desc("Display the PE/COFF debug directory"));
// --coff-resources
cl::opt<bool> COFFResources("coff-resources",
cl::desc("Display the PE/COFF .rsrc section"));
// --coff-load-config
cl::opt<bool>
COFFLoadConfig("coff-load-config",
cl::desc("Display the PE/COFF load config"));
// --elf-linker-options
cl::opt<bool>
ELFLinkerOptions("elf-linker-options",
cl::desc("Display the ELF .linker-options section"));
// --macho-data-in-code
cl::opt<bool>
MachODataInCode("macho-data-in-code",
cl::desc("Display MachO Data in Code command"));
// --macho-indirect-symbols
cl::opt<bool>
MachOIndirectSymbols("macho-indirect-symbols",
cl::desc("Display MachO indirect symbols"));
// --macho-linker-options
cl::opt<bool>
MachOLinkerOptions("macho-linker-options",
cl::desc("Display MachO linker options"));
// --macho-segment
cl::opt<bool>
MachOSegment("macho-segment",
cl::desc("Display MachO Segment command"));
// --macho-version-min
cl::opt<bool>
MachOVersionMin("macho-version-min",
cl::desc("Display MachO version min command"));
// --macho-dysymtab
cl::opt<bool>
MachODysymtab("macho-dysymtab",
cl::desc("Display MachO Dysymtab command"));
// --stackmap
cl::opt<bool>
PrintStackMap("stackmap",
cl::desc("Display contents of stackmap section"));
// --stack-sizes
cl::opt<bool>
PrintStackSizes("stack-sizes",
cl::desc("Display contents of all stack sizes sections"));
// --version-info, -V
cl::opt<bool>
VersionInfo("version-info",
cl::desc("Display ELF version sections (if present)"));
cl::alias VersionInfoShort("V", cl::desc("Alias for -version-info"),
cl::aliasopt(VersionInfo));
// --elf-section-groups, --section-groups, -g
cl::opt<bool> SectionGroups("elf-section-groups",
cl::desc("Display ELF section group contents"));
cl::alias SectionGroupsAlias("section-groups",
cl::desc("Alias for -elf-sections-groups"),
cl::aliasopt(SectionGroups));
cl::alias SectionGroupsShort("g", cl::desc("Alias for -elf-sections-groups"),
cl::aliasopt(SectionGroups));
// --elf-hash-histogram, --histogram, -I
cl::opt<bool> HashHistogram(
"elf-hash-histogram",
cl::desc("Display bucket list histogram for hash sections"));
cl::alias HashHistogramShort("I", cl::desc("Alias for -elf-hash-histogram"),
cl::aliasopt(HashHistogram));
cl::alias HistogramAlias("histogram",
cl::desc("Alias for --elf-hash-histogram"),
cl::aliasopt(HashHistogram));
// --elf-cg-profile
cl::opt<bool> CGProfile("elf-cg-profile", cl::desc("Display callgraph profile section"));
// -addrsig
cl::opt<bool> Addrsig("addrsig",
cl::desc("Display address-significance table"));
// -elf-output-style
cl::opt<OutputStyleTy>
Output("elf-output-style", cl::desc("Specify ELF dump style"),
cl::values(clEnumVal(LLVM, "LLVM default style"),
clEnumVal(GNU, "GNU readelf style")),
cl::init(LLVM));
cl::extrahelp
HelpResponse("\nPass @FILE as argument to read options from FILE.\n");
} // namespace opts
static StringRef ToolName;
namespace llvm {
LLVM_ATTRIBUTE_NORETURN static void error(Twine Msg) {
// Flush the standard output to print the error at a
// proper place.
fouts().flush();
WithColor::error(errs(), ToolName) << Msg << "\n";
exit(1);
}
LLVM_ATTRIBUTE_NORETURN void reportError(Error Err, StringRef Input) {
assert(Err);
if (Input == "-")
Input = "<stdin>";
handleAllErrors(createFileError(Input, std::move(Err)),
[&](const ErrorInfoBase &EI) { error(EI.message()); });
llvm_unreachable("error() call should never return");
}
void reportWarning(Error Err, StringRef Input) {
assert(Err);
if (Input == "-")
Input = "<stdin>";
// Flush the standard output to print the warning at a
// proper place.
fouts().flush();
handleAllErrors(
createFileError(Input, std::move(Err)), [&](const ErrorInfoBase &EI) {
WithColor::warning(errs(), ToolName) << EI.message() << "\n";
});
}
} // namespace llvm
namespace {
struct ReadObjTypeTableBuilder {
ReadObjTypeTableBuilder()
: Allocator(), IDTable(Allocator), TypeTable(Allocator),
GlobalIDTable(Allocator), GlobalTypeTable(Allocator) {}
llvm::BumpPtrAllocator Allocator;
llvm::codeview::MergingTypeTableBuilder IDTable;
llvm::codeview::MergingTypeTableBuilder TypeTable;
llvm::codeview::GlobalTypeTableBuilder GlobalIDTable;
llvm::codeview::GlobalTypeTableBuilder GlobalTypeTable;
std::vector<OwningBinary<Binary>> Binaries;
};
} // namespace
static ReadObjTypeTableBuilder CVTypes;
/// Creates an format-specific object file dumper.
static std::error_code createDumper(const ObjectFile *Obj,
ScopedPrinter &Writer,
std::unique_ptr<ObjDumper> &Result) {
if (!Obj)
return readobj_error::unsupported_file_format;
if (Obj->isCOFF())
return createCOFFDumper(Obj, Writer, Result);
if (Obj->isELF())
return createELFDumper(Obj, Writer, Result);
if (Obj->isMachO())
return createMachODumper(Obj, Writer, Result);
if (Obj->isWasm())
return createWasmDumper(Obj, Writer, Result);
if (Obj->isXCOFF())
return createXCOFFDumper(Obj, Writer, Result);
return readobj_error::unsupported_obj_file_format;
}
/// Dumps the specified object file.
static void dumpObject(const ObjectFile *Obj, ScopedPrinter &Writer,
const Archive *A = nullptr) {
std::string FileStr =
A ? Twine(A->getFileName() + "(" + Obj->getFileName() + ")").str()
: Obj->getFileName().str();
std::unique_ptr<ObjDumper> Dumper;
if (std::error_code EC = createDumper(Obj, Writer, Dumper))
reportError(errorCodeToError(EC), FileStr);
if (opts::Output == opts::LLVM || opts::InputFilenames.size() > 1 || A) {
Writer.startLine() << "\n";
Writer.printString("File", FileStr);
}
if (opts::Output == opts::LLVM) {
Writer.printString("Format", Obj->getFileFormatName());
Writer.printString("Arch", Triple::getArchTypeName(
(llvm::Triple::ArchType)Obj->getArch()));
Writer.printString(
"AddressSize",
std::string(formatv("{0}bit", 8 * Obj->getBytesInAddress())));
Dumper->printLoadName();
}
if (opts::FileHeaders)
Dumper->printFileHeaders();
if (opts::SectionHeaders)
Dumper->printSectionHeaders();
if (opts::Relocations)
Dumper->printRelocations();
if (opts::DynRelocs)
Dumper->printDynamicRelocations();
if (opts::Symbols || opts::DynamicSymbols)
Dumper->printSymbols(opts::Symbols, opts::DynamicSymbols);
if (opts::HashSymbols)
Dumper->printHashSymbols();
if (opts::UnwindInfo)
Dumper->printUnwindInfo();
if (opts::DynamicTable)
Dumper->printDynamicTable();
if (opts::NeededLibraries)
Dumper->printNeededLibraries();
if (opts::ProgramHeaders || opts::SectionMapping == cl::BOU_TRUE)
Dumper->printProgramHeaders(opts::ProgramHeaders, opts::SectionMapping);
if (!opts::StringDump.empty())
Dumper->printSectionsAsString(Obj, opts::StringDump);
if (!opts::HexDump.empty())
Dumper->printSectionsAsHex(Obj, opts::HexDump);
if (opts::HashTable)
Dumper->printHashTable();
if (opts::GnuHashTable)
Dumper->printGnuHashTable();
if (opts::VersionInfo)
Dumper->printVersionInfo();
if (Obj->isELF()) {
if (opts::DependentLibraries)
Dumper->printDependentLibs();
if (opts::ELFLinkerOptions)
Dumper->printELFLinkerOptions();
if (opts::ArchSpecificInfo)
Dumper->printArchSpecificInfo();
if (opts::SectionGroups)
Dumper->printGroupSections();
if (opts::HashHistogram)
Dumper->printHashHistogram();
if (opts::CGProfile)
Dumper->printCGProfile();
if (opts::Addrsig)
Dumper->printAddrsig();
if (opts::Notes)
Dumper->printNotes();
}
if (Obj->isCOFF()) {
if (opts::COFFImports)
Dumper->printCOFFImports();
if (opts::COFFExports)
Dumper->printCOFFExports();
if (opts::COFFDirectives)
Dumper->printCOFFDirectives();
if (opts::COFFBaseRelocs)
Dumper->printCOFFBaseReloc();
if (opts::COFFDebugDirectory)
Dumper->printCOFFDebugDirectory();
if (opts::COFFResources)
Dumper->printCOFFResources();
if (opts::COFFLoadConfig)
Dumper->printCOFFLoadConfig();
if (opts::Addrsig)
Dumper->printAddrsig();
if (opts::CodeView)
Dumper->printCodeViewDebugInfo();
if (opts::CodeViewMergedTypes)
Dumper->mergeCodeViewTypes(CVTypes.IDTable, CVTypes.TypeTable,
CVTypes.GlobalIDTable, CVTypes.GlobalTypeTable,
opts::CodeViewEnableGHash);
}
if (Obj->isMachO()) {
if (opts::MachODataInCode)
Dumper->printMachODataInCode();
if (opts::MachOIndirectSymbols)
Dumper->printMachOIndirectSymbols();
if (opts::MachOLinkerOptions)
Dumper->printMachOLinkerOptions();
if (opts::MachOSegment)
Dumper->printMachOSegment();
if (opts::MachOVersionMin)
Dumper->printMachOVersionMin();
if (opts::MachODysymtab)
Dumper->printMachODysymtab();
}
if (opts::PrintStackMap)
Dumper->printStackMap();
if (opts::PrintStackSizes)
Dumper->printStackSizes();
}
/// Dumps each object file in \a Arc;
static void dumpArchive(const Archive *Arc, ScopedPrinter &Writer) {
Error Err = Error::success();
for (auto &Child : Arc->children(Err)) {
Expected<std::unique_ptr<Binary>> ChildOrErr = Child.getAsBinary();
if (!ChildOrErr) {
if (auto E = isNotObjectErrorInvalidFileType(ChildOrErr.takeError()))
reportError(std::move(E), Arc->getFileName());
continue;
}
if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get()))
dumpObject(Obj, Writer, Arc);
else if (COFFImportFile *Imp = dyn_cast<COFFImportFile>(&*ChildOrErr.get()))
dumpCOFFImportFile(Imp, Writer);
else
reportError(errorCodeToError(readobj_error::unrecognized_file_format),
Arc->getFileName());
}
if (Err)
reportError(std::move(Err), Arc->getFileName());
}
/// Dumps each object file in \a MachO Universal Binary;
static void dumpMachOUniversalBinary(const MachOUniversalBinary *UBinary,
ScopedPrinter &Writer) {
for (const MachOUniversalBinary::ObjectForArch &Obj : UBinary->objects()) {
Expected<std::unique_ptr<MachOObjectFile>> ObjOrErr = Obj.getAsObjectFile();
if (ObjOrErr)
dumpObject(&*ObjOrErr.get(), Writer);
else if (auto E = isNotObjectErrorInvalidFileType(ObjOrErr.takeError()))
reportError(ObjOrErr.takeError(), UBinary->getFileName());
else if (Expected<std::unique_ptr<Archive>> AOrErr = Obj.getAsArchive())
dumpArchive(&*AOrErr.get(), Writer);
}
}
/// Dumps \a WinRes, Windows Resource (.res) file;
static void dumpWindowsResourceFile(WindowsResource *WinRes,
ScopedPrinter &Printer) {
WindowsRes::Dumper Dumper(WinRes, Printer);
if (auto Err = Dumper.printData())
reportError(std::move(Err), WinRes->getFileName());
}
/// Opens \a File and dumps it.
static void dumpInput(StringRef File, ScopedPrinter &Writer) {
// Attempt to open the binary.
Expected<OwningBinary<Binary>> BinaryOrErr = createBinary(File);
if (!BinaryOrErr)
reportError(BinaryOrErr.takeError(), File);
Binary &Binary = *BinaryOrErr.get().getBinary();
if (Archive *Arc = dyn_cast<Archive>(&Binary))
dumpArchive(Arc, Writer);
else if (MachOUniversalBinary *UBinary =
dyn_cast<MachOUniversalBinary>(&Binary))
dumpMachOUniversalBinary(UBinary, Writer);
else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary))
dumpObject(Obj, Writer);
else if (COFFImportFile *Import = dyn_cast<COFFImportFile>(&Binary))
dumpCOFFImportFile(Import, Writer);
else if (WindowsResource *WinRes = dyn_cast<WindowsResource>(&Binary))
dumpWindowsResourceFile(WinRes, Writer);
else
reportError(errorCodeToError(readobj_error::unrecognized_file_format),
File);
CVTypes.Binaries.push_back(std::move(*BinaryOrErr));
}
/// Registers aliases that should only be allowed by readobj.
static void registerReadobjAliases() {
// -s has meant --sections for a very long time in llvm-readobj despite
// meaning --symbols in readelf.
static cl::alias SectionsShort("s", cl::desc("Alias for --section-headers"),
cl::aliasopt(opts::SectionHeaders),
cl::NotHidden);
// Only register -t in llvm-readobj, as readelf reserves it for
// --section-details (not implemented yet).
static cl::alias SymbolsShort("t", cl::desc("Alias for --symbols"),
cl::aliasopt(opts::Symbols), cl::NotHidden);
// The following two-letter aliases are only provided for readobj, as readelf
// allows single-letter args to be grouped together.
static cl::alias SectionRelocationsShort(
"sr", cl::desc("Alias for --section-relocations"),
cl::aliasopt(opts::SectionRelocations));
static cl::alias SectionDataShort("sd", cl::desc("Alias for --section-data"),
cl::aliasopt(opts::SectionData));
static cl::alias SectionSymbolsShort("st",
cl::desc("Alias for --section-symbols"),
cl::aliasopt(opts::SectionSymbols));
static cl::alias DynamicSymbolsShort("dt",
cl::desc("Alias for --dyn-symbols"),
cl::aliasopt(opts::DynamicSymbols));
}
/// Registers aliases that should only be allowed by readelf.
static void registerReadelfAliases() {
// -s is here because for readobj it means --sections.
static cl::alias SymbolsShort("s", cl::desc("Alias for --symbols"),
cl::aliasopt(opts::Symbols), cl::NotHidden,
cl::Grouping);
// Allow all single letter flags to be grouped together.
for (auto &OptEntry : cl::getRegisteredOptions()) {
StringRef ArgName = OptEntry.getKey();
cl::Option *Option = OptEntry.getValue();
if (ArgName.size() == 1)
apply(Option, cl::Grouping);
}
}
int main(int argc, const char *argv[]) {
InitLLVM X(argc, argv);
ToolName = argv[0];
// Register the target printer for --version.
cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
if (sys::path::stem(argv[0]).contains("readelf")) {
opts::Output = opts::GNU;
registerReadelfAliases();
} else {
registerReadobjAliases();
}
cl::ParseCommandLineOptions(argc, argv, "LLVM Object Reader\n");
if (opts::All) {
opts::FileHeaders = true;
opts::ProgramHeaders = true;
opts::SectionHeaders = true;
opts::Symbols = true;
opts::Relocations = true;
opts::DynamicTable = true;
opts::Notes = true;
opts::VersionInfo = true;
opts::UnwindInfo = true;
opts::SectionGroups = true;
opts::HashHistogram = true;
if (opts::Output == opts::LLVM) {
opts::Addrsig = true;
opts::PrintStackSizes = true;
}
}
if (opts::Headers) {
opts::FileHeaders = true;
opts::ProgramHeaders = true;
opts::SectionHeaders = true;
}
// Default to stdin if no filename is specified.
if (opts::InputFilenames.empty())
opts::InputFilenames.push_back("-");
ScopedPrinter Writer(fouts());
for (const std::string &I : opts::InputFilenames)
dumpInput(I, Writer);
if (opts::CodeViewMergedTypes) {
if (opts::CodeViewEnableGHash)
dumpCodeViewMergedTypes(Writer, CVTypes.GlobalIDTable.records(),
CVTypes.GlobalTypeTable.records());
else
dumpCodeViewMergedTypes(Writer, CVTypes.IDTable.records(),
CVTypes.TypeTable.records());
}
return 0;
}
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