mirror of
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f4ccd11075
This compiles with no changes to clang/lld/lldb with MSVC and includes overloads to various functions which are used by those projects and llvm which have OwningPtr's as parameters. This should allow out of tree projects some time to move. There are also no changes to libs/Target, which should help out of tree targets have time to move, if necessary. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203083 91177308-0d34-0410-b5e6-96231b3b80d8
416 lines
15 KiB
C++
416 lines
15 KiB
C++
//===-- macho-dump.cpp - Mach Object Dumping Tool -------------------------===//
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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 testing tool for use with the MC/Mach-O LLVM components.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Object/MachO.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/ADT/Twine.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/Format.h"
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#include "llvm/Support/ManagedStatic.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/raw_ostream.h"
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#include "llvm/Support/system_error.h"
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using namespace llvm;
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using namespace llvm::object;
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static cl::opt<std::string>
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InputFile(cl::Positional, cl::desc("<input file>"), cl::init("-"));
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static cl::opt<bool>
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ShowSectionData("dump-section-data", cl::desc("Dump the contents of sections"),
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cl::init(false));
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///
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static const char *ProgramName;
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static void Message(const char *Type, const Twine &Msg) {
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errs() << ProgramName << ": " << Type << ": " << Msg << "\n";
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}
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static int Error(const Twine &Msg) {
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Message("error", Msg);
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return 1;
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}
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static void Warning(const Twine &Msg) {
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Message("warning", Msg);
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}
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///
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static void DumpSegmentCommandData(StringRef Name,
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uint64_t VMAddr, uint64_t VMSize,
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uint64_t FileOffset, uint64_t FileSize,
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uint32_t MaxProt, uint32_t InitProt,
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uint32_t NumSections, uint32_t Flags) {
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outs() << " ('segment_name', '";
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outs().write_escaped(Name, /*UseHexEscapes=*/true) << "')\n";
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outs() << " ('vm_addr', " << VMAddr << ")\n";
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outs() << " ('vm_size', " << VMSize << ")\n";
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outs() << " ('file_offset', " << FileOffset << ")\n";
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outs() << " ('file_size', " << FileSize << ")\n";
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outs() << " ('maxprot', " << MaxProt << ")\n";
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outs() << " ('initprot', " << InitProt << ")\n";
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outs() << " ('num_sections', " << NumSections << ")\n";
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outs() << " ('flags', " << Flags << ")\n";
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}
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static int DumpSectionData(const MachOObjectFile &Obj, unsigned Index,
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StringRef Name,
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StringRef SegmentName, uint64_t Address,
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uint64_t Size, uint32_t Offset,
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uint32_t Align, uint32_t RelocationTableOffset,
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uint32_t NumRelocationTableEntries,
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uint32_t Flags, uint32_t Reserved1,
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uint32_t Reserved2, uint64_t Reserved3 = ~0ULL) {
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outs() << " # Section " << Index << "\n";
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outs() << " (('section_name', '";
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outs().write_escaped(Name, /*UseHexEscapes=*/true) << "')\n";
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outs() << " ('segment_name', '";
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outs().write_escaped(SegmentName, /*UseHexEscapes=*/true) << "')\n";
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outs() << " ('address', " << Address << ")\n";
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outs() << " ('size', " << Size << ")\n";
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outs() << " ('offset', " << Offset << ")\n";
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outs() << " ('alignment', " << Align << ")\n";
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outs() << " ('reloc_offset', " << RelocationTableOffset << ")\n";
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outs() << " ('num_reloc', " << NumRelocationTableEntries << ")\n";
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outs() << " ('flags', " << format("0x%x", Flags) << ")\n";
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outs() << " ('reserved1', " << Reserved1 << ")\n";
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outs() << " ('reserved2', " << Reserved2 << ")\n";
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if (Reserved3 != ~0ULL)
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outs() << " ('reserved3', " << Reserved3 << ")\n";
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outs() << " ),\n";
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// Dump the relocation entries.
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outs() << " ('_relocations', [\n";
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unsigned RelNum = 0;
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for (relocation_iterator I = Obj.section_rel_begin(Index),
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E = Obj.section_rel_end(Index);
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I != E; ++I, ++RelNum) {
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MachO::any_relocation_info RE = Obj.getRelocation(I->getRawDataRefImpl());
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outs() << " # Relocation " << RelNum << "\n";
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outs() << " (('word-0', " << format("0x%x", RE.r_word0) << "),\n";
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outs() << " ('word-1', " << format("0x%x", RE.r_word1) << ")),\n";
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}
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outs() << " ])\n";
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// Dump the section data, if requested.
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if (ShowSectionData) {
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outs() << " ('_section_data', '";
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StringRef Data = Obj.getData().substr(Offset, Size);
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for (unsigned i = 0; i != Data.size(); ++i) {
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if (i && (i % 4) == 0)
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outs() << ' ';
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outs() << hexdigit((Data[i] >> 4) & 0xF, /*LowerCase=*/true);
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outs() << hexdigit((Data[i] >> 0) & 0xF, /*LowerCase=*/true);
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}
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outs() << "')\n";
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}
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return 0;
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}
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static int DumpSegmentCommand(const MachOObjectFile &Obj,
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const MachOObjectFile::LoadCommandInfo &LCI) {
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MachO::segment_command SLC = Obj.getSegmentLoadCommand(LCI);
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DumpSegmentCommandData(StringRef(SLC.segname, 16), SLC.vmaddr,
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SLC.vmsize, SLC.fileoff, SLC.filesize,
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SLC.maxprot, SLC.initprot, SLC.nsects, SLC.flags);
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// Dump the sections.
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outs() << " ('sections', [\n";
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for (unsigned i = 0; i != SLC.nsects; ++i) {
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MachO::section Sect = Obj.getSection(LCI, i);
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DumpSectionData(Obj, i, StringRef(Sect.sectname, 16),
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StringRef(Sect.segname, 16), Sect.addr,
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Sect.size, Sect.offset, Sect.align,
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Sect.reloff, Sect.nreloc, Sect.flags,
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Sect.reserved1, Sect.reserved2);
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}
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outs() << " ])\n";
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return 0;
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}
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static int DumpSegment64Command(const MachOObjectFile &Obj,
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const MachOObjectFile::LoadCommandInfo &LCI) {
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MachO::segment_command_64 SLC = Obj.getSegment64LoadCommand(LCI);
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DumpSegmentCommandData(StringRef(SLC.segname, 16), SLC.vmaddr,
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SLC.vmsize, SLC.fileoff, SLC.filesize,
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SLC.maxprot, SLC.initprot, SLC.nsects, SLC.flags);
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// Dump the sections.
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outs() << " ('sections', [\n";
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for (unsigned i = 0; i != SLC.nsects; ++i) {
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MachO::section_64 Sect = Obj.getSection64(LCI, i);
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DumpSectionData(Obj, i, StringRef(Sect.sectname, 16),
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StringRef(Sect.segname, 16), Sect.addr,
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Sect.size, Sect.offset, Sect.align,
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Sect.reloff, Sect.nreloc, Sect.flags,
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Sect.reserved1, Sect.reserved2,
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Sect.reserved3);
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}
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outs() << " ])\n";
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return 0;
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}
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static void DumpSymbolTableEntryData(const MachOObjectFile &Obj,
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unsigned Index, uint32_t StringIndex,
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uint8_t Type, uint8_t SectionIndex,
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uint16_t Flags, uint64_t Value,
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StringRef StringTable) {
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const char *Name = &StringTable.data()[StringIndex];
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outs() << " # Symbol " << Index << "\n";
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outs() << " (('n_strx', " << StringIndex << ")\n";
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outs() << " ('n_type', " << format("0x%x", Type) << ")\n";
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outs() << " ('n_sect', " << uint32_t(SectionIndex) << ")\n";
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outs() << " ('n_desc', " << Flags << ")\n";
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outs() << " ('n_value', " << Value << ")\n";
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outs() << " ('_string', '" << Name << "')\n";
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outs() << " ),\n";
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}
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static int DumpSymtabCommand(const MachOObjectFile &Obj) {
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MachO::symtab_command SLC = Obj.getSymtabLoadCommand();
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outs() << " ('symoff', " << SLC.symoff << ")\n";
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outs() << " ('nsyms', " << SLC.nsyms << ")\n";
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outs() << " ('stroff', " << SLC.stroff << ")\n";
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outs() << " ('strsize', " << SLC.strsize << ")\n";
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// Dump the string data.
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outs() << " ('_string_data', '";
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StringRef StringTable = Obj.getStringTableData();
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outs().write_escaped(StringTable,
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/*UseHexEscapes=*/true) << "')\n";
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// Dump the symbol table.
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outs() << " ('_symbols', [\n";
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unsigned SymNum = 0;
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for (symbol_iterator I = Obj.symbol_begin(), E = Obj.symbol_end(); I != E;
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++I, ++SymNum) {
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DataRefImpl DRI = I->getRawDataRefImpl();
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if (Obj.is64Bit()) {
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MachO::nlist_64 STE = Obj.getSymbol64TableEntry(DRI);
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DumpSymbolTableEntryData(Obj, SymNum, STE.n_strx, STE.n_type,
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STE.n_sect, STE.n_desc, STE.n_value,
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StringTable);
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} else {
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MachO::nlist STE = Obj.getSymbolTableEntry(DRI);
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DumpSymbolTableEntryData(Obj, SymNum, STE.n_strx, STE.n_type,
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STE.n_sect, STE.n_desc, STE.n_value,
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StringTable);
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}
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}
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outs() << " ])\n";
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return 0;
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}
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static int DumpDysymtabCommand(const MachOObjectFile &Obj) {
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MachO::dysymtab_command DLC = Obj.getDysymtabLoadCommand();
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outs() << " ('ilocalsym', " << DLC.ilocalsym << ")\n";
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outs() << " ('nlocalsym', " << DLC.nlocalsym << ")\n";
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outs() << " ('iextdefsym', " << DLC.iextdefsym << ")\n";
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outs() << " ('nextdefsym', " << DLC.nextdefsym << ")\n";
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outs() << " ('iundefsym', " << DLC.iundefsym << ")\n";
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outs() << " ('nundefsym', " << DLC.nundefsym << ")\n";
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outs() << " ('tocoff', " << DLC.tocoff << ")\n";
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outs() << " ('ntoc', " << DLC.ntoc << ")\n";
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outs() << " ('modtaboff', " << DLC.modtaboff << ")\n";
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outs() << " ('nmodtab', " << DLC.nmodtab << ")\n";
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outs() << " ('extrefsymoff', " << DLC.extrefsymoff << ")\n";
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outs() << " ('nextrefsyms', " << DLC.nextrefsyms << ")\n";
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outs() << " ('indirectsymoff', " << DLC.indirectsymoff << ")\n";
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outs() << " ('nindirectsyms', " << DLC.nindirectsyms << ")\n";
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outs() << " ('extreloff', " << DLC.extreloff << ")\n";
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outs() << " ('nextrel', " << DLC.nextrel << ")\n";
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outs() << " ('locreloff', " << DLC.locreloff << ")\n";
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outs() << " ('nlocrel', " << DLC.nlocrel << ")\n";
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// Dump the indirect symbol table.
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outs() << " ('_indirect_symbols', [\n";
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for (unsigned i = 0; i != DLC.nindirectsyms; ++i) {
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uint32_t ISTE = Obj.getIndirectSymbolTableEntry(DLC, i);
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outs() << " # Indirect Symbol " << i << "\n";
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outs() << " (('symbol_index', " << format("0x%x", ISTE) << "),),\n";
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}
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outs() << " ])\n";
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return 0;
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}
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static int
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DumpLinkeditDataCommand(const MachOObjectFile &Obj,
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const MachOObjectFile::LoadCommandInfo &LCI) {
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MachO::linkedit_data_command LLC = Obj.getLinkeditDataLoadCommand(LCI);
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outs() << " ('dataoff', " << LLC.dataoff << ")\n"
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<< " ('datasize', " << LLC.datasize << ")\n"
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<< " ('_addresses', [\n";
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SmallVector<uint64_t, 8> Addresses;
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Obj.ReadULEB128s(LLC.dataoff, Addresses);
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for (unsigned i = 0, e = Addresses.size(); i != e; ++i)
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outs() << " # Address " << i << '\n'
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<< " ('address', " << format("0x%x", Addresses[i]) << "),\n";
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outs() << " ])\n";
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return 0;
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}
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static int
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DumpDataInCodeDataCommand(const MachOObjectFile &Obj,
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const MachOObjectFile::LoadCommandInfo &LCI) {
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MachO::linkedit_data_command LLC = Obj.getLinkeditDataLoadCommand(LCI);
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outs() << " ('dataoff', " << LLC.dataoff << ")\n"
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<< " ('datasize', " << LLC.datasize << ")\n"
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<< " ('_data_regions', [\n";
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unsigned NumRegions = LLC.datasize / sizeof(MachO::data_in_code_entry);
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for (unsigned i = 0; i < NumRegions; ++i) {
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MachO::data_in_code_entry DICE= Obj.getDataInCodeTableEntry(LLC.dataoff, i);
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outs() << " # DICE " << i << "\n"
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<< " ('offset', " << DICE.offset << ")\n"
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<< " ('length', " << DICE.length << ")\n"
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<< " ('kind', " << DICE.kind << ")\n";
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}
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outs() <<" ])\n";
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return 0;
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}
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static int
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DumpLinkerOptionsCommand(const MachOObjectFile &Obj,
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const MachOObjectFile::LoadCommandInfo &LCI) {
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MachO::linker_options_command LOLC = Obj.getLinkerOptionsLoadCommand(LCI);
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outs() << " ('count', " << LOLC.count << ")\n"
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<< " ('_strings', [\n";
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uint64_t DataSize = LOLC.cmdsize - sizeof(MachO::linker_options_command);
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const char *P = LCI.Ptr + sizeof(MachO::linker_options_command);
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StringRef Data(P, DataSize);
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for (unsigned i = 0; i != LOLC.count; ++i) {
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std::pair<StringRef,StringRef> Split = Data.split('\0');
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outs() << "\t\"";
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outs().write_escaped(Split.first);
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outs() << "\",\n";
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Data = Split.second;
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}
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outs() <<" ])\n";
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return 0;
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}
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static int DumpLoadCommand(const MachOObjectFile &Obj,
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MachOObjectFile::LoadCommandInfo &LCI) {
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switch (LCI.C.cmd) {
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case MachO::LC_SEGMENT:
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return DumpSegmentCommand(Obj, LCI);
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case MachO::LC_SEGMENT_64:
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return DumpSegment64Command(Obj, LCI);
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case MachO::LC_SYMTAB:
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return DumpSymtabCommand(Obj);
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case MachO::LC_DYSYMTAB:
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return DumpDysymtabCommand(Obj);
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case MachO::LC_CODE_SIGNATURE:
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case MachO::LC_SEGMENT_SPLIT_INFO:
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case MachO::LC_FUNCTION_STARTS:
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return DumpLinkeditDataCommand(Obj, LCI);
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case MachO::LC_DATA_IN_CODE:
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return DumpDataInCodeDataCommand(Obj, LCI);
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case MachO::LC_LINKER_OPTIONS:
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return DumpLinkerOptionsCommand(Obj, LCI);
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default:
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Warning("unknown load command: " + Twine(LCI.C.cmd));
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return 0;
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}
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}
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static int DumpLoadCommand(const MachOObjectFile &Obj, unsigned Index,
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MachOObjectFile::LoadCommandInfo &LCI) {
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outs() << " # Load Command " << Index << "\n"
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<< " (('command', " << LCI.C.cmd << ")\n"
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<< " ('size', " << LCI.C.cmdsize << ")\n";
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int Res = DumpLoadCommand(Obj, LCI);
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outs() << " ),\n";
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return Res;
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}
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static void printHeader(const MachOObjectFile *Obj,
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const MachO::mach_header &Header) {
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outs() << "('cputype', " << Header.cputype << ")\n";
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outs() << "('cpusubtype', " << Header.cpusubtype << ")\n";
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outs() << "('filetype', " << Header.filetype << ")\n";
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outs() << "('num_load_commands', " << Header.ncmds << ")\n";
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outs() << "('load_commands_size', " << Header.sizeofcmds << ")\n";
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outs() << "('flag', " << Header.flags << ")\n";
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// Print extended header if 64-bit.
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if (Obj->is64Bit()) {
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const MachO::mach_header_64 *Header64 =
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reinterpret_cast<const MachO::mach_header_64 *>(&Header);
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outs() << "('reserved', " << Header64->reserved << ")\n";
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}
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}
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int main(int argc, char **argv) {
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ProgramName = argv[0];
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llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
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cl::ParseCommandLineOptions(argc, argv, "llvm Mach-O dumping tool\n");
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ErrorOr<Binary *> BinaryOrErr = createBinary(InputFile);
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if (error_code EC = BinaryOrErr.getError())
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return Error("unable to read input: '" + EC.message() + "'");
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std::unique_ptr<Binary> Binary(BinaryOrErr.get());
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const MachOObjectFile *InputObject = dyn_cast<MachOObjectFile>(Binary.get());
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if (!InputObject)
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return Error("Not a MachO object");
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// Print the header
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MachO::mach_header_64 Header64;
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MachO::mach_header *Header = reinterpret_cast<MachO::mach_header*>(&Header64);
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if (InputObject->is64Bit())
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Header64 = InputObject->getHeader64();
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else
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*Header = InputObject->getHeader();
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printHeader(InputObject, *Header);
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// Print the load commands.
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int Res = 0;
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MachOObjectFile::LoadCommandInfo Command =
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InputObject->getFirstLoadCommandInfo();
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outs() << "('load_commands', [\n";
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for (unsigned i = 0; ; ++i) {
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if (DumpLoadCommand(*InputObject, i, Command))
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break;
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if (i == Header->ncmds - 1)
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break;
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Command = InputObject->getNextLoadCommandInfo(Command);
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}
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outs() << "])\n";
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return Res;
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}
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