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authorDaniel Dunbar <daniel@zuster.org>2010-11-27 07:19:41 +0000
committerDaniel Dunbar <daniel@zuster.org>2010-11-27 07:19:41 +0000
commita956d8b71755b908d8a150736e8857d2214060c6 (patch)
tree6ac44d294bb7e144b41f7316b518250c8b07a61d /tools/macho-dump
parentbce55776af16b70408e2ae2e6d91f8ac1e43f6a7 (diff)
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Object/Mach-O: Add header and load command information.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@120198 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'tools/macho-dump')
-rw-r--r--tools/macho-dump/macho-dump.cpp81
1 files changed, 69 insertions, 12 deletions
diff --git a/tools/macho-dump/macho-dump.cpp b/tools/macho-dump/macho-dump.cpp
index 945406a501..8bfd1890c6 100644
--- a/tools/macho-dump/macho-dump.cpp
+++ b/tools/macho-dump/macho-dump.cpp
@@ -12,6 +12,7 @@
//===----------------------------------------------------------------------===//
#include "llvm/Object/MachOObject.h"
+#include "llvm/ADT/Twine.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MemoryBuffer.h"
@@ -26,8 +27,62 @@ static cl::opt<bool>
DumpSectionData("dump-section-data", cl::desc("Dump the contents of sections"),
cl::init(false));
+///
+
+static const char *ProgramName;
+
+static void Message(const char *Type, const Twine &Msg) {
+ errs() << ProgramName << ": " << Type << ": " << Msg << "\n";
+}
+
+static int Error(const Twine &Msg) {
+ Message("error", Msg);
+ return 1;
+}
+
+static void Warning(const Twine &Msg) {
+ Message("warning", Msg);
+}
+
+///
+
+static int DumpHeader(MachOObject &Obj) {
+ // Read the header.
+ const macho::Header &Hdr = Obj.getHeader();
+ outs() << "('cputype', " << Hdr.CPUType << ")\n";
+ outs() << "('cpusubtype', " << Hdr.CPUSubtype << ")\n";
+ outs() << "('filetype', " << Hdr.FileType << ")\n";
+ outs() << "('num_load_commands', " << Hdr.NumLoadCommands << ")\n";
+ outs() << "('load_commands_size', " << Hdr.SizeOfLoadCommands << ")\n";
+ outs() << "('flag', " << Hdr.Flags << ")\n";
+
+ // Print extended header if 64-bit.
+ if (Obj.is64Bit()) {
+ const macho::Header64Ext &Hdr64 = Obj.getHeader64Ext();
+ outs() << "('reserved', " << Hdr64.Reserved << ")\n";
+ }
+
+ return 0;
+}
+
+static int DumpLoadCommand(MachOObject &Obj, unsigned Index) {
+ const MachOObject::LoadCommandInfo &LCI = Obj.getLoadCommandInfo(Index);
+
+ outs() << " # Load Command " << Index << "\n"
+ << " (('command', " << LCI.Command.Type << ")\n"
+ << " ('size', " << LCI.Command.Size << ")\n";
+ switch (LCI.Command.Type) {
+ default:
+ Warning("unknown load command: " + Twine(LCI.Command.Type));
+ break;
+ }
+ outs() << " ),\n";
+
+ return 0;
+}
+
int main(int argc, char **argv) {
- const char *ProgramName = argv[0];
+ ProgramName = argv[0];
llvm_shutdown_obj Y; // Call llvm_shutdown() on exit.
cl::ParseCommandLineOptions(argc, argv, "llvm Mach-O dumping tool\n");
@@ -36,21 +91,23 @@ int main(int argc, char **argv) {
std::string ErrorStr;
OwningPtr<MemoryBuffer> InputBuffer(
MemoryBuffer::getFileOrSTDIN(InputFile, &ErrorStr));
- if (!InputBuffer) {
- errs() << ProgramName << ": " << "unable to read input: '"
- << ErrorStr << "'\n";
- return 1;
- }
+ if (!InputBuffer)
+ return Error("unable to read input: '" + ErrorStr + "'");
// Construct the Mach-O wrapper object.
OwningPtr<MachOObject> InputObject(
MachOObject::LoadFromBuffer(InputBuffer.take(), &ErrorStr));
- if (!InputObject) {
- errs() << ProgramName << ": " << "unable to load object: '"
- << ErrorStr << "'\n";
- return 1;
- }
+ if (!InputObject)
+ return Error("unable to load object: '" + ErrorStr + "'");
+
+ if (int Res = DumpHeader(*InputObject))
+ return Res;
+
+ // Print the load commands.
+ outs() << "('load_commands', [\n";
+ for (unsigned i = 0; i != InputObject->getHeader().NumLoadCommands; ++i)
+ DumpLoadCommand(*InputObject, i);
+ outs() << "])\n";
- errs() << "ok\n";
return 0;
}