1 //===-- macho-dump.cpp - Mach Object Dumping Tool -------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This is a testing tool for use with the MC/Mach-O LLVM components.
12 //===----------------------------------------------------------------------===//
14 #include "llvm/Object/MachOObject.h"
15 #include "llvm/ADT/Twine.h"
16 #include "llvm/Support/CommandLine.h"
17 #include "llvm/Support/ManagedStatic.h"
18 #include "llvm/Support/MemoryBuffer.h"
19 #include "llvm/Support/raw_ostream.h"
21 using namespace llvm::object;
23 static cl::opt<std::string>
24 InputFile(cl::Positional, cl::desc("<input file>"), cl::init("-"));
27 DumpSectionData("dump-section-data", cl::desc("Dump the contents of sections"),
32 static const char *ProgramName;
34 static void Message(const char *Type, const Twine &Msg) {
35 errs() << ProgramName << ": " << Type << ": " << Msg << "\n";
38 static int Error(const Twine &Msg) {
39 Message("error", Msg);
43 static void Warning(const Twine &Msg) {
44 Message("warning", Msg);
49 static int DumpHeader(MachOObject &Obj) {
51 const macho::Header &Hdr = Obj.getHeader();
52 outs() << "('cputype', " << Hdr.CPUType << ")\n";
53 outs() << "('cpusubtype', " << Hdr.CPUSubtype << ")\n";
54 outs() << "('filetype', " << Hdr.FileType << ")\n";
55 outs() << "('num_load_commands', " << Hdr.NumLoadCommands << ")\n";
56 outs() << "('load_commands_size', " << Hdr.SizeOfLoadCommands << ")\n";
57 outs() << "('flag', " << Hdr.Flags << ")\n";
59 // Print extended header if 64-bit.
61 const macho::Header64Ext &Hdr64 = Obj.getHeader64Ext();
62 outs() << "('reserved', " << Hdr64.Reserved << ")\n";
68 static int DumpLoadCommand(MachOObject &Obj, unsigned Index) {
69 const MachOObject::LoadCommandInfo &LCI = Obj.getLoadCommandInfo(Index);
71 outs() << " # Load Command " << Index << "\n"
72 << " (('command', " << LCI.Command.Type << ")\n"
73 << " ('size', " << LCI.Command.Size << ")\n";
74 switch (LCI.Command.Type) {
76 Warning("unknown load command: " + Twine(LCI.Command.Type));
84 int main(int argc, char **argv) {
85 ProgramName = argv[0];
86 llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
88 cl::ParseCommandLineOptions(argc, argv, "llvm Mach-O dumping tool\n");
90 // Load the input file.
92 OwningPtr<MemoryBuffer> InputBuffer(
93 MemoryBuffer::getFileOrSTDIN(InputFile, &ErrorStr));
95 return Error("unable to read input: '" + ErrorStr + "'");
97 // Construct the Mach-O wrapper object.
98 OwningPtr<MachOObject> InputObject(
99 MachOObject::LoadFromBuffer(InputBuffer.take(), &ErrorStr));
101 return Error("unable to load object: '" + ErrorStr + "'");
103 if (int Res = DumpHeader(*InputObject))
106 // Print the load commands.
107 outs() << "('load_commands', [\n";
108 for (unsigned i = 0; i != InputObject->getHeader().NumLoadCommands; ++i)
109 DumpLoadCommand(*InputObject, i);