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40e22518fc
This patch includes a fix for a llvm-readobj test. With this patch, the tool does no longer print out COFF headers for the short import file, but that's probably desirable because the header for the short import file is dummy. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@246283 91177308-0d34-0410-b5e6-96231b3b80d8
419 lines
13 KiB
C++
419 lines
13 KiB
C++
//===- llvm-readobj.cpp - Dump contents of an Object File -----------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This is a tool similar to readelf, except it works on multiple object file
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// formats. The main purpose of this tool is to provide detailed output suitable
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// for FileCheck.
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//
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// Flags should be similar to readelf where supported, but the output format
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// does not need to be identical. The point is to not make users learn yet
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// another set of flags.
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//
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// Output should be specialized for each format where appropriate.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm-readobj.h"
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#include "Error.h"
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#include "ObjDumper.h"
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#include "StreamWriter.h"
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#include "llvm/Object/Archive.h"
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#include "llvm/Object/COFFImportFile.h"
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#include "llvm/Object/ELFObjectFile.h"
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#include "llvm/Object/MachOUniversal.h"
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#include "llvm/Object/ObjectFile.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/DataTypes.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/PrettyStackTrace.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/Support/TargetRegistry.h"
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#include "llvm/Support/TargetSelect.h"
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#include <string>
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#include <system_error>
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using namespace llvm;
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using namespace llvm::object;
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namespace opts {
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cl::list<std::string> InputFilenames(cl::Positional,
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cl::desc("<input object files>"),
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cl::ZeroOrMore);
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// -file-headers, -h
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cl::opt<bool> FileHeaders("file-headers",
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cl::desc("Display file headers "));
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cl::alias FileHeadersShort("h",
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cl::desc("Alias for --file-headers"),
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cl::aliasopt(FileHeaders));
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// -sections, -s
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cl::opt<bool> Sections("sections",
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cl::desc("Display all sections."));
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cl::alias SectionsShort("s",
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cl::desc("Alias for --sections"),
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cl::aliasopt(Sections));
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// -section-relocations, -sr
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cl::opt<bool> SectionRelocations("section-relocations",
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cl::desc("Display relocations for each section shown."));
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cl::alias SectionRelocationsShort("sr",
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cl::desc("Alias for --section-relocations"),
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cl::aliasopt(SectionRelocations));
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// -section-symbols, -st
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cl::opt<bool> SectionSymbols("section-symbols",
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cl::desc("Display symbols for each section shown."));
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cl::alias SectionSymbolsShort("st",
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cl::desc("Alias for --section-symbols"),
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cl::aliasopt(SectionSymbols));
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// -section-data, -sd
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cl::opt<bool> SectionData("section-data",
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cl::desc("Display section data for each section shown."));
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cl::alias SectionDataShort("sd",
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cl::desc("Alias for --section-data"),
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cl::aliasopt(SectionData));
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// -relocations, -r
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cl::opt<bool> Relocations("relocations",
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cl::desc("Display the relocation entries in the file"));
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cl::alias RelocationsShort("r",
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cl::desc("Alias for --relocations"),
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cl::aliasopt(Relocations));
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// -dyn-relocations
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cl::opt<bool> DynRelocs("dyn-relocations",
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cl::desc("Display the dynamic relocation entries in the file"));
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// -symbols, -t
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cl::opt<bool> Symbols("symbols",
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cl::desc("Display the symbol table"));
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cl::alias SymbolsShort("t",
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cl::desc("Alias for --symbols"),
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cl::aliasopt(Symbols));
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// -dyn-symbols, -dt
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cl::opt<bool> DynamicSymbols("dyn-symbols",
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cl::desc("Display the dynamic symbol table"));
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cl::alias DynamicSymbolsShort("dt",
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cl::desc("Alias for --dyn-symbols"),
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cl::aliasopt(DynamicSymbols));
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// -unwind, -u
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cl::opt<bool> UnwindInfo("unwind",
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cl::desc("Display unwind information"));
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cl::alias UnwindInfoShort("u",
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cl::desc("Alias for --unwind"),
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cl::aliasopt(UnwindInfo));
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// -dynamic-table
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cl::opt<bool> DynamicTable("dynamic-table",
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cl::desc("Display the ELF .dynamic section table"));
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// -needed-libs
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cl::opt<bool> NeededLibraries("needed-libs",
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cl::desc("Display the needed libraries"));
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// -program-headers
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cl::opt<bool> ProgramHeaders("program-headers",
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cl::desc("Display ELF program headers"));
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// -hash-table
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cl::opt<bool> HashTable("hash-table",
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cl::desc("Display ELF hash table"));
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// -expand-relocs
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cl::opt<bool> ExpandRelocs("expand-relocs",
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cl::desc("Expand each shown relocation to multiple lines"));
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// -codeview
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cl::opt<bool> CodeView("codeview",
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cl::desc("Display CodeView debug information"));
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// -codeview-subsection-bytes
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cl::opt<bool> CodeViewSubsectionBytes(
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"codeview-subsection-bytes",
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cl::desc("Dump raw contents of codeview debug sections and records"));
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// -arm-attributes, -a
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cl::opt<bool> ARMAttributes("arm-attributes",
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cl::desc("Display the ARM attributes section"));
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cl::alias ARMAttributesShort("-a", cl::desc("Alias for --arm-attributes"),
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cl::aliasopt(ARMAttributes));
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// -mips-plt-got
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cl::opt<bool>
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MipsPLTGOT("mips-plt-got",
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cl::desc("Display the MIPS GOT and PLT GOT sections"));
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// -mips-abi-flags
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cl::opt<bool> MipsABIFlags("mips-abi-flags",
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cl::desc("Display the MIPS.abiflags section"));
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// -mips-reginfo
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cl::opt<bool> MipsReginfo("mips-reginfo",
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cl::desc("Display the MIPS .reginfo section"));
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// -coff-imports
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cl::opt<bool>
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COFFImports("coff-imports", cl::desc("Display the PE/COFF import table"));
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// -coff-exports
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cl::opt<bool>
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COFFExports("coff-exports", cl::desc("Display the PE/COFF export table"));
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// -coff-directives
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cl::opt<bool>
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COFFDirectives("coff-directives",
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cl::desc("Display the PE/COFF .drectve section"));
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// -coff-basereloc
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cl::opt<bool>
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COFFBaseRelocs("coff-basereloc",
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cl::desc("Display the PE/COFF .reloc section"));
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// -macho-data-in-code
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cl::opt<bool>
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MachODataInCode("macho-data-in-code",
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cl::desc("Display MachO Data in Code command"));
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// -macho-version-min
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cl::opt<bool>
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MachOVersionMin("macho-version-min",
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cl::desc("Display MachO version min command"));
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// -stackmap
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cl::opt<bool>
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PrintStackMap("stackmap",
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cl::desc("Display contents of stackmap section"));
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} // namespace opts
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namespace llvm {
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void reportError(Twine Msg) {
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outs() << "\nError reading file: " << Msg << ".\n";
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outs().flush();
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exit(1);
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}
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void error(std::error_code EC) {
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if (!EC)
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return;
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reportError(EC.message());
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}
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bool relocAddressLess(RelocationRef a, RelocationRef b) {
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return a.getOffset() < b.getOffset();
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}
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} // namespace llvm
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static void reportError(StringRef Input, std::error_code EC) {
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if (Input == "-")
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Input = "<stdin>";
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reportError(Twine(Input) + ": " + EC.message());
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}
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static void reportError(StringRef Input, StringRef Message) {
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if (Input == "-")
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Input = "<stdin>";
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reportError(Twine(Input) + ": " + Message);
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}
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static bool isMipsArch(unsigned Arch) {
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switch (Arch) {
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case llvm::Triple::mips:
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case llvm::Triple::mipsel:
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case llvm::Triple::mips64:
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case llvm::Triple::mips64el:
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return true;
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default:
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return false;
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}
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}
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/// @brief Creates an format-specific object file dumper.
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static std::error_code createDumper(const ObjectFile *Obj, StreamWriter &Writer,
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std::unique_ptr<ObjDumper> &Result) {
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if (!Obj)
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return readobj_error::unsupported_file_format;
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if (Obj->isCOFF())
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return createCOFFDumper(Obj, Writer, Result);
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if (Obj->isELF())
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return createELFDumper(Obj, Writer, Result);
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if (Obj->isMachO())
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return createMachODumper(Obj, Writer, Result);
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return readobj_error::unsupported_obj_file_format;
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}
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/// @brief Dumps the specified object file.
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static void dumpObject(const ObjectFile *Obj) {
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StreamWriter Writer(outs());
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std::unique_ptr<ObjDumper> Dumper;
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if (std::error_code EC = createDumper(Obj, Writer, Dumper)) {
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reportError(Obj->getFileName(), EC);
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return;
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}
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outs() << '\n';
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outs() << "File: " << Obj->getFileName() << "\n";
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outs() << "Format: " << Obj->getFileFormatName() << "\n";
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outs() << "Arch: "
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<< Triple::getArchTypeName((llvm::Triple::ArchType)Obj->getArch())
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<< "\n";
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outs() << "AddressSize: " << (8*Obj->getBytesInAddress()) << "bit\n";
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Dumper->printLoadName();
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if (opts::FileHeaders)
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Dumper->printFileHeaders();
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if (opts::Sections)
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Dumper->printSections();
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if (opts::Relocations)
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Dumper->printRelocations();
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if (opts::DynRelocs)
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Dumper->printDynamicRelocations();
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if (opts::Symbols)
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Dumper->printSymbols();
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if (opts::DynamicSymbols)
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Dumper->printDynamicSymbols();
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if (opts::UnwindInfo)
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Dumper->printUnwindInfo();
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if (opts::DynamicTable)
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Dumper->printDynamicTable();
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if (opts::NeededLibraries)
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Dumper->printNeededLibraries();
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if (opts::ProgramHeaders)
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Dumper->printProgramHeaders();
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if (opts::HashTable)
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Dumper->printHashTable();
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if (Obj->getArch() == llvm::Triple::arm && Obj->isELF())
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if (opts::ARMAttributes)
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Dumper->printAttributes();
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if (isMipsArch(Obj->getArch()) && Obj->isELF()) {
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if (opts::MipsPLTGOT)
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Dumper->printMipsPLTGOT();
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if (opts::MipsABIFlags)
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Dumper->printMipsABIFlags();
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if (opts::MipsReginfo)
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Dumper->printMipsReginfo();
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}
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if (Obj->isCOFF()) {
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if (opts::COFFImports)
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Dumper->printCOFFImports();
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if (opts::COFFExports)
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Dumper->printCOFFExports();
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if (opts::COFFDirectives)
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Dumper->printCOFFDirectives();
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if (opts::COFFBaseRelocs)
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Dumper->printCOFFBaseReloc();
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}
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if (Obj->isMachO())
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if (opts::MachODataInCode)
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Dumper->printMachODataInCode();
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if (opts::MachOVersionMin)
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Dumper->printMachOVersionMin();
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if (opts::PrintStackMap)
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Dumper->printStackMap();
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}
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static void dumpCOFFImportFile(const COFFImportFile *File) {
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outs() << '\n';
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outs() << "File: " << File->getFileName() << "\n";
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outs() << "Format: COFF-import-file\n";
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}
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/// @brief Dumps each object file in \a Arc;
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static void dumpArchive(const Archive *Arc) {
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for (const auto &Child : Arc->children()) {
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ErrorOr<std::unique_ptr<Binary>> ChildOrErr = Child.getAsBinary();
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if (std::error_code EC = ChildOrErr.getError()) {
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// Ignore non-object files.
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if (EC != object_error::invalid_file_type)
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reportError(Arc->getFileName(), EC.message());
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continue;
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}
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if (ObjectFile *Obj = dyn_cast<ObjectFile>(&*ChildOrErr.get()))
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dumpObject(Obj);
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else
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reportError(Arc->getFileName(), readobj_error::unrecognized_file_format);
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}
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}
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/// @brief Dumps each object file in \a MachO Universal Binary;
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static void dumpMachOUniversalBinary(const MachOUniversalBinary *UBinary) {
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for (const MachOUniversalBinary::ObjectForArch &Obj : UBinary->objects()) {
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ErrorOr<std::unique_ptr<MachOObjectFile>> ObjOrErr = Obj.getAsObjectFile();
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if (ObjOrErr)
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dumpObject(&*ObjOrErr.get());
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else if (ErrorOr<std::unique_ptr<Archive>> AOrErr = Obj.getAsArchive())
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dumpArchive(&*AOrErr.get());
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else
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reportError(UBinary->getFileName(), ObjOrErr.getError().message());
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}
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}
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/// @brief Opens \a File and dumps it.
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static void dumpInput(StringRef File) {
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// If file isn't stdin, check that it exists.
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if (File != "-" && !sys::fs::exists(File)) {
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reportError(File, readobj_error::file_not_found);
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return;
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}
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// Attempt to open the binary.
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ErrorOr<OwningBinary<Binary>> BinaryOrErr = createBinary(File);
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if (std::error_code EC = BinaryOrErr.getError()) {
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reportError(File, EC);
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return;
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}
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Binary &Binary = *BinaryOrErr.get().getBinary();
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if (Archive *Arc = dyn_cast<Archive>(&Binary))
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dumpArchive(Arc);
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else if (MachOUniversalBinary *UBinary =
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dyn_cast<MachOUniversalBinary>(&Binary))
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dumpMachOUniversalBinary(UBinary);
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else if (ObjectFile *Obj = dyn_cast<ObjectFile>(&Binary))
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dumpObject(Obj);
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else if (COFFImportFile *Import = dyn_cast<COFFImportFile>(&Binary))
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dumpCOFFImportFile(Import);
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else
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reportError(File, readobj_error::unrecognized_file_format);
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}
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int main(int argc, const char *argv[]) {
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sys::PrintStackTraceOnErrorSignal();
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PrettyStackTraceProgram X(argc, argv);
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llvm_shutdown_obj Y;
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// Register the target printer for --version.
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cl::AddExtraVersionPrinter(TargetRegistry::printRegisteredTargetsForVersion);
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cl::ParseCommandLineOptions(argc, argv, "LLVM Object Reader\n");
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// Default to stdin if no filename is specified.
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if (opts::InputFilenames.size() == 0)
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opts::InputFilenames.push_back("-");
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std::for_each(opts::InputFilenames.begin(), opts::InputFilenames.end(),
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dumpInput);
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return 0;
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}
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