[apple/ld64.git] / src / ObjectDump.cpp

/* -*- mode: C++; c-basic-offset: 4; tab-width: 4 -*- 
 *
 * Copyright (c) 2005-2006 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <fcntl.h>

#include "MachOReaderRelocatable.hpp"
#include "LTOReader.hpp"

static bool			sDumpContent= true;
static bool			sDumpStabs	= false;
static bool			sSort		= true;
static bool			sNMmode		= false;
static cpu_type_t	sPreferredArch = CPU_TYPE_POWERPC64;
static const char* sMatchName;
static int sPrintRestrict;
static int sPrintAlign;
static int sPrintName;


 __attribute__((noreturn))
void throwf(const char* format, ...) 
{
	va_list	list;
	char*	p;
	va_start(list, format);
	vasprintf(&p, format, list);
	va_end(list);
	
	const char*	t = p;
	throw t;
}

void warning(const char* format, ...)
{
	va_list	list;
	fprintf(stderr, "warning: ");
	va_start(list, format);
	vfprintf(stderr, format, list);
	va_end(list);
	fprintf(stderr, "\n");
}

static void dumpStabs(std::vector<ObjectFile::Reader::Stab>* stabs)
{
	// debug info
	printf("stabs: (%lu)\n", stabs->size());
	for (std::vector<ObjectFile::Reader::Stab>::iterator it = stabs->begin(); it != stabs->end(); ++it ) {
		ObjectFile::Reader::Stab& stab = *it;
		const char* code = "?????";
		switch (stab.type) {
			case N_GSYM:
				code = " GSYM";
				break;
			case N_FNAME:
				code = "FNAME";
				break;
			case N_FUN:
				code = "  FUN";
				break;
			case N_STSYM:
				code = "STSYM";
				break;
			case N_LCSYM:
				code = "LCSYM";
				break;
			case N_BNSYM:
				code = "BNSYM";
				break;
			case N_OPT:
				code = "  OPT";
				break;
			case N_RSYM:
				code = " RSYM";
				break;
			case N_SLINE:
				code = "SLINE";
				break;
			case N_ENSYM:
				code = "ENSYM";
				break;
			case N_SSYM:
				code = " SSYM";
				break;
			case N_SO:
				code = "   SO";
				break;
			case N_OSO:
				code = "  OSO";
				break;
			case N_LSYM:
				code = " LSYM";
				break;
			case N_BINCL:
				code = "BINCL";
				break;
			case N_SOL:
				code = "  SOL";
				break;
			case N_PARAMS:
				code = "PARMS";
				break;
			case N_VERSION:
				code = " VERS";
				break;
			case N_OLEVEL:
				code = "OLEVL";
				break;
			case N_PSYM:
				code = " PSYM";
				break;
			case N_EINCL:
				code = "EINCL";
				break;
			case N_ENTRY:
				code = "ENTRY";
				break;
			case N_LBRAC:
				code = "LBRAC";
				break;
			case N_EXCL:
				code = " EXCL";
				break;
			case N_RBRAC:
				code = "RBRAC";
				break;
			case N_BCOMM:
				code = "BCOMM";
				break;
			case N_ECOMM:
				code = "ECOMM";
				break;
			case N_LENG:
				code =  "LENG";
				break;
		}
		printf("  [atom=%20s] %02X %04X %s %s\n", ((stab.atom != NULL) ? stab.atom->getDisplayName() : ""), stab.other, stab.desc, code, stab.string);
	}
}


static void dumpAtomLikeNM(ObjectFile::Atom* atom)
{
	uint32_t size = atom->getSize();
	
	const char* visibility;
	switch ( atom->getScope() ) {
		case ObjectFile::Atom::scopeTranslationUnit:
			visibility = "internal";
			break;
		case ObjectFile::Atom::scopeLinkageUnit:
			visibility = "hidden  ";
			break;
		case ObjectFile::Atom::scopeGlobal:
			visibility = "global  ";
			break;
		default:
			visibility = "        ";
			break;
	}

	const char* kind;
	switch ( atom->getDefinitionKind() ) {
		case ObjectFile::Atom::kRegularDefinition:
			kind = "regular  ";
			break;
		case ObjectFile::Atom::kTentativeDefinition:
			kind = "tentative";
			break;
		case ObjectFile::Atom::kWeakDefinition:
			kind = "weak     ";
			break;
		case ObjectFile::Atom::kAbsoluteSymbol:
			kind = "absolute ";
			break;
		default:
			kind = "         ";
			break;
	}

	printf("0x%08X %s %s %s\n", size, visibility, kind, atom->getDisplayName());
}


static void dumpAtom(ObjectFile::Atom* atom)
{
	if(sMatchName && strcmp(sMatchName, atom->getDisplayName()))
		return;

	//printf("atom:    %p\n", atom);
	
	// name
	if(!sPrintRestrict || sPrintName)
		printf("name:    %s\n",  atom->getDisplayName());
	
	// scope
	if(!sPrintRestrict)
		switch ( atom->getScope() ) {
		case ObjectFile::Atom::scopeTranslationUnit:
			printf("scope:   translation unit\n");
			break;
		case ObjectFile::Atom::scopeLinkageUnit:
			printf("scope:   linkage unit\n");
			break;
		case ObjectFile::Atom::scopeGlobal:
			printf("scope:   global\n");
			break;
		default:
			printf("scope:   unknown\n");
		}
	
	// kind
	if(!sPrintRestrict)
		switch ( atom->getDefinitionKind() ) {
		case ObjectFile::Atom::kRegularDefinition:
			printf("kind:     regular\n");
			break;
		case ObjectFile::Atom::kWeakDefinition:
			printf("kind:     weak\n");
			break;
		case ObjectFile::Atom::kTentativeDefinition:
			printf("kind:     tentative\n");
			break;
		case ObjectFile::Atom::kExternalDefinition:
			printf("kind:     import\n");
			break;
		case ObjectFile::Atom::kExternalWeakDefinition:
			printf("kind:     weak import\n");
			break;
		case ObjectFile::Atom::kAbsoluteSymbol:
			printf("kind:     absolute symbol\n");
			break;
		default:
			printf("kind:   unknown\n");
		}

	// segment and section
	if(!sPrintRestrict && (atom->getSectionName() != NULL) )
		printf("section: %s,%s\n", atom->getSegment().getName(), atom->getSectionName());

	// attributes
	if(!sPrintRestrict) {
		printf("attrs:   ");
		if ( atom->dontDeadStrip() )
			printf("dont-dead-strip ");
		if ( atom->isZeroFill() )
			printf("zero-fill ");
		if ( atom->isThumb() )
			printf("thumb ");
		printf("\n");
	}
	
	// size
	if(!sPrintRestrict)
		printf("size:    0x%012llX\n", atom->getSize());
	
	// alignment
	if(!sPrintRestrict || sPrintAlign)
		printf("align:    %u mod %u\n", atom->getAlignment().modulus, (1 << atom->getAlignment().powerOf2) );

	// content
	if (!sPrintRestrict && sDumpContent ) { 
		uint64_t size = atom->getSize();
		if ( size < 4096 ) {
			uint8_t content[size];
			atom->copyRawContent(content);
			printf("content: ");
			if ( strcmp(atom->getSectionName(), "__cstring") == 0 ) {
				printf("\"");
				for (unsigned int i=0; i < size; ++i) {
					if(content[i]<'!' || content[i]>=127)
						printf("\\%o", content[i]);
					else
						printf("%c", content[i]);
				}
				printf("\"");
			}
			else {
				for (unsigned int i=0; i < size; ++i)
					printf("%02X ", content[i]);
			}
		}
		printf("\n");
	}
	
	// references
	if(!sPrintRestrict) {
		std::vector<ObjectFile::Reference*>&  references = atom->getReferences();
		const int refCount = references.size();
		printf("references: (%u)\n", refCount);
		for (int i=0; i < refCount; ++i) {
			ObjectFile::Reference* ref = references[i];
			printf("   %s\n", ref->getDescription());
		}
	}
	
	// line info
	if(!sPrintRestrict) {
		std::vector<ObjectFile::LineInfo>* lineInfo = atom->getLineInfo();
		if ( (lineInfo != NULL) && (lineInfo->size() > 0) ) {
			printf("line info: (%lu)\n", lineInfo->size());
			for (std::vector<ObjectFile::LineInfo>::iterator it = lineInfo->begin(); it != lineInfo->end(); ++it) {
				printf("   offset 0x%04X, line %d, file %s\n", it->atomOffset, it->lineNumber, it->fileName);
			}
		}
	}

	if(!sPrintRestrict)
		printf("\n");
}

struct AtomSorter
{
     bool operator()(const ObjectFile::Atom* left, const ObjectFile::Atom* right)
     {
		if ( left == right )
			return false;
        return (strcmp(left->getDisplayName(), right->getDisplayName()) < 0);
     }
};


static void dumpFile(ObjectFile::Reader* reader)
{
	// stabs debug info
	if ( sDumpStabs && (reader->getDebugInfoKind() == ObjectFile::Reader::kDebugInfoStabs) ) {
		std::vector<ObjectFile::Reader::Stab>* stabs = reader->getStabs();
		if ( stabs != NULL )
			dumpStabs(stabs);
	}
	
	// get all atoms
	std::vector<ObjectFile::Atom*> atoms = reader->getAtoms();
	
	// make copy of vector and sort (so output is canonical)
	std::vector<ObjectFile::Atom*> sortedAtoms(atoms);
	if ( sSort )
		std::sort(sortedAtoms.begin(), sortedAtoms.end(), AtomSorter());
	
	for(std::vector<ObjectFile::Atom*>::iterator it=sortedAtoms.begin(); it != sortedAtoms.end(); ++it) {
		if ( sNMmode )
			dumpAtomLikeNM(*it);
		else
			dumpAtom(*it);
	}
}


static ObjectFile::Reader* createReader(const char* path, const ObjectFile::ReaderOptions& options)
{
	struct stat stat_buf;
	
	int fd = ::open(path, O_RDONLY, 0);
	if ( fd == -1 )
		throwf("cannot open file: %s", path);
	::fstat(fd, &stat_buf);
	uint8_t* p = (uint8_t*)::mmap(NULL, stat_buf.st_size, PROT_READ, MAP_FILE | MAP_PRIVATE, fd, 0);
	::close(fd);
	const mach_header* mh = (mach_header*)p;
	if ( mh->magic == OSSwapBigToHostInt32(FAT_MAGIC) ) {
		const struct fat_header* fh = (struct fat_header*)p;
		const struct fat_arch* archs = (struct fat_arch*)(p + sizeof(struct fat_header));
		for (unsigned long i=0; i < OSSwapBigToHostInt32(fh->nfat_arch); ++i) {
			if ( OSSwapBigToHostInt32(archs[i].cputype) == (uint32_t)sPreferredArch ) {
				p = p + OSSwapBigToHostInt32(archs[i].offset);
				mh = (struct mach_header*)p;
			}
		}
	}
	if ( mach_o::relocatable::Reader<x86>::validFile(p) )
		return new mach_o::relocatable::Reader<x86>::Reader(p, path, 0, options, 0);
	else if ( mach_o::relocatable::Reader<ppc>::validFile(p) )
		return new mach_o::relocatable::Reader<ppc>::Reader(p, path, 0, options, 0);
	else if ( mach_o::relocatable::Reader<ppc64>::validFile(p) )
		return new mach_o::relocatable::Reader<ppc64>::Reader(p, path, 0, options, 0);
	else if ( mach_o::relocatable::Reader<x86_64>::validFile(p) )
		return new mach_o::relocatable::Reader<x86_64>::Reader(p, path, 0, options, 0);
	else if ( mach_o::relocatable::Reader<arm>::validFile(p) )
		return new mach_o::relocatable::Reader<arm>::Reader(p, path, 0, options, 0);
	if ( lto::Reader::validFile(p, stat_buf.st_size, 0) ) {
		return new lto::Reader(p, stat_buf.st_size, path, 0, options, 0);
	}
	
	throwf("not a mach-o object file: %s", path);
}

static
void
usage()
{
	fprintf(stderr, "ObjectDump options:\n"
			"\t-no_content\tdon't dump contents\n"
			"\t-stabs\t\tdump stabs\n"
			"\t-arch aaa\tonly dump info about arch aaa\n"
			"\t-only sym\tonly dump info about sym\n"
			"\t-align\t\tonly print alignment info\n"
			"\t-name\t\tonly print symbol names\n"
		);
}

int main(int argc, const char* argv[])
{
	if(argc<2) {
		usage();
		return 0;
	}

	ObjectFile::ReaderOptions options;
	try {
		for(int i=1; i < argc; ++i) {
			const char* arg = argv[i];
			if ( arg[0] == '-' ) {
				if ( strcmp(arg, "-no_content") == 0 ) {
					sDumpContent = false;
				}
				else if ( strcmp(arg, "-nm") == 0 ) {
					sNMmode = true;
				}
				else if ( strcmp(arg, "-stabs") == 0 ) {
					sDumpStabs = true;
				}
				else if ( strcmp(arg, "-no_sort") == 0 ) {
					sSort = false;
				}
				else if ( strcmp(arg, "-arch") == 0 ) {
					const char* arch = ++i<argc? argv[i]: "";
					if ( strcmp(arch, "ppc64") == 0 )
						sPreferredArch = CPU_TYPE_POWERPC64;
					else if ( strcmp(arch, "ppc") == 0 )
						sPreferredArch = CPU_TYPE_POWERPC;
					else if ( strcmp(arch, "i386") == 0 )
						sPreferredArch = CPU_TYPE_I386;
					else if ( strcmp(arch, "x86_64") == 0 )
						sPreferredArch = CPU_TYPE_X86_64;
					else 
						throwf("unknown architecture %s", arch);
				}
				else if ( strcmp(arg, "-only") == 0 ) {
					sMatchName = ++i<argc? argv[i]: NULL;
				}
				else if ( strcmp(arg, "-align") == 0 ) {
					sPrintRestrict = true;
					sPrintAlign = true;
				}
				else if ( strcmp(arg, "-name") == 0 ) {
					sPrintRestrict = true;
					sPrintName = true;
				}
				else {
					usage();
					throwf("unknown option: %s\n", arg);
				}
			}
			else {
				ObjectFile::Reader* reader = createReader(arg, options);
				dumpFile(reader);
			}
		}
	}
	catch (const char* msg) {
		fprintf(stderr, "ObjDump failed: %s\n", msg);
		return 1;
	}
	
	return 0;
}
Commit	Line	Data
d696c285 A	1	/* -- mode: C++; c-basic-offset: 4; tab-width: 4 --
	2	*
	3	* Copyright (c) 2005-2006 Apple Computer, Inc. All rights reserved.
c2646906 A	4	*
	5	* @APPLE_LICENSE_HEADER_START@
	6	*
	7	* This file contains Original Code and/or Modifications of Original Code
	8	* as defined in and that are subject to the Apple Public Source License
	9	* Version 2.0 (the 'License'). You may not use this file except in
	10	* compliance with the License. Please obtain a copy of the License at
	11	* http://www.opensource.apple.com/apsl/ and read it before using this
	12	* file.
	13	*
	14	* The Original Code and all software distributed under the License are
	15	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	16	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	17	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	18	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	19	* Please see the License for the specific language governing rights and
	20	* limitations under the License.
	21	*
	22	* @APPLE_LICENSE_HEADER_END@
	23	*/
d696c285	24
c2646906 A	25	#include <sys/types.h>
	26	#include <sys/stat.h>
	27	#include <sys/mman.h>
	28	#include <fcntl.h>
	29	#include <fcntl.h>
c2646906	30
d696c285	31	#include "MachOReaderRelocatable.hpp"
2f2f92e4	32	#include "LTOReader.hpp"
d696c285 A	33
	34	static bool sDumpContent= true;
	35	static bool sDumpStabs = false;
	36	static bool sSort = true;
2f2f92e4	37	static bool sNMmode = false;
d696c285	38	static cpu_type_t sPreferredArch = CPU_TYPE_POWERPC64;
a61fdf0a A	39	static const char* sMatchName;
	40	static int sPrintRestrict;
	41	static int sPrintAlign;
	42	static int sPrintName;
c2646906	43
c2646906 A	44
	45	__attribute__((noreturn))
	46	void throwf(const char* format, ...)
	47	{
	48	va_list list;
	49	char* p;
	50	va_start(list, format);
	51	vasprintf(&p, format, list);
	52	va_end(list);
	53
	54	const char* t = p;
	55	throw t;
	56	}
	57
2f2f92e4 A	58	void warning(const char* format, ...)
	59	{
	60	va_list list;
	61	fprintf(stderr, "warning: ");
	62	va_start(list, format);
	63	vfprintf(stderr, format, list);
	64	va_end(list);
	65	fprintf(stderr, "\n");
	66	}
	67
d696c285	68	static void dumpStabs(std::vector<ObjectFile::Reader::Stab>* stabs)
c2646906 A	69	{
c2646906 A	70	// debug info
d696c285 A	71	printf("stabs: (%lu)\n", stabs->size());
	72	for (std::vector<ObjectFile::Reader::Stab>::iterator it = stabs->begin(); it != stabs->end(); ++it ) {
	73	ObjectFile::Reader::Stab& stab = *it;
c2646906 A	74	const char* code = "?????";
	75	switch (stab.type) {
	76	case N_GSYM:
	77	code = " GSYM";
	78	break;
	79	case N_FNAME:
	80	code = "FNAME";
	81	break;
	82	case N_FUN:
	83	code = " FUN";
	84	break;
	85	case N_STSYM:
	86	code = "STSYM";
	87	break;
	88	case N_LCSYM:
	89	code = "LCSYM";
	90	break;
	91	case N_BNSYM:
	92	code = "BNSYM";
	93	break;
	94	case N_OPT:
	95	code = " OPT";
	96	break;
	97	case N_RSYM:
	98	code = " RSYM";
	99	break;
	100	case N_SLINE:
	101	code = "SLINE";
	102	break;
	103	case N_ENSYM:
	104	code = "ENSYM";
	105	break;
	106	case N_SSYM:
	107	code = " SSYM";
	108	break;
	109	case N_SO:
	110	code = " SO";
	111	break;
d696c285 A	112	case N_OSO:
	113	code = " OSO";
	114	break;
c2646906 A	115	case N_LSYM:
	116	code = " LSYM";
	117	break;
	118	case N_BINCL:
	119	code = "BINCL";
	120	break;
	121	case N_SOL:
	122	code = " SOL";
	123	break;
	124	case N_PARAMS:
	125	code = "PARMS";
	126	break;
	127	case N_VERSION:
	128	code = " VERS";
	129	break;
	130	case N_OLEVEL:
	131	code = "OLEVL";
	132	break;
	133	case N_PSYM:
	134	code = " PSYM";
	135	break;
	136	case N_EINCL:
	137	code = "EINCL";
	138	break;
	139	case N_ENTRY:
	140	code = "ENTRY";
	141	break;
	142	case N_LBRAC:
	143	code = "LBRAC";
	144	break;
	145	case N_EXCL:
	146	code = " EXCL";
	147	break;
	148	case N_RBRAC:
	149	code = "RBRAC";
	150	break;
	151	case N_BCOMM:
	152	code = "BCOMM";
	153	break;
	154	case N_ECOMM:
	155	code = "ECOMM";
	156	break;
	157	case N_LENG:
	158	code = "LENG";
	159	break;
	160	}
d696c285	161	printf(" [atom=%20s] %02X %04X %s %s\n", ((stab.atom != NULL) ? stab.atom->getDisplayName() : ""), stab.other, stab.desc, code, stab.string);
c2646906 A	162	}
	163	}
	164
	165
2f2f92e4 A	166	static void dumpAtomLikeNM(ObjectFile::Atom* atom)
	167	{
	168	uint32_t size = atom->getSize();
	169
	170	const char* visibility;
	171	switch ( atom->getScope() ) {
	172	case ObjectFile::Atom::scopeTranslationUnit:
	173	visibility = "internal";
	174	break;
	175	case ObjectFile::Atom::scopeLinkageUnit:
	176	visibility = "hidden ";
	177	break;
	178	case ObjectFile::Atom::scopeGlobal:
	179	visibility = "global ";
	180	break;
	181	default:
	182	visibility = " ";
	183	break;
	184	}
	185
	186	const char* kind;
	187	switch ( atom->getDefinitionKind() ) {
	188	case ObjectFile::Atom::kRegularDefinition:
	189	kind = "regular ";
	190	break;
	191	case ObjectFile::Atom::kTentativeDefinition:
	192	kind = "tentative";
	193	break;
	194	case ObjectFile::Atom::kWeakDefinition:
	195	kind = "weak ";
	196	break;
	197	case ObjectFile::Atom::kAbsoluteSymbol:
	198	kind = "absolute ";
	199	break;
	200	default:
	201	kind = " ";
	202	break;
	203	}
	204
	205	printf("0x%08X %s %s %s\n", size, visibility, kind, atom->getDisplayName());
	206	}
	207
	208
c2646906 A	209	static void dumpAtom(ObjectFile::Atom* atom)
c2646906 A	210	{
a61fdf0a A	211	if(sMatchName && strcmp(sMatchName, atom->getDisplayName()))
	212	return;
	213
c2646906 A	214	//printf("atom: %p\n", atom);
	215
	216	// name
a61fdf0a A	217	if(!sPrintRestrict \|\| sPrintName)
a61fdf0a A	218	printf("name: %s\n", atom->getDisplayName());
c2646906 A	219
c2646906 A	220	// scope
a61fdf0a A	221	if(!sPrintRestrict)
a61fdf0a A	222	switch ( atom->getScope() ) {
c2646906 A	223	case ObjectFile::Atom::scopeTranslationUnit:
	224	printf("scope: translation unit\n");
	225	break;
	226	case ObjectFile::Atom::scopeLinkageUnit:
	227	printf("scope: linkage unit\n");
	228	break;
	229	case ObjectFile::Atom::scopeGlobal:
	230	printf("scope: global\n");
	231	break;
	232	default:
	233	printf("scope: unknown\n");
a61fdf0a	234	}
c2646906	235
d696c285	236	// kind
a61fdf0a A	237	if(!sPrintRestrict)
a61fdf0a A	238	switch ( atom->getDefinitionKind() ) {
d696c285 A	239	case ObjectFile::Atom::kRegularDefinition:
	240	printf("kind: regular\n");
	241	break;
	242	case ObjectFile::Atom::kWeakDefinition:
	243	printf("kind: weak\n");
	244	break;
	245	case ObjectFile::Atom::kTentativeDefinition:
	246	printf("kind: tentative\n");
	247	break;
	248	case ObjectFile::Atom::kExternalDefinition:
	249	printf("kind: import\n");
	250	break;
	251	case ObjectFile::Atom::kExternalWeakDefinition:
	252	printf("kind: weak import\n");
	253	break;
a61fdf0a A	254	case ObjectFile::Atom::kAbsoluteSymbol:
	255	printf("kind: absolute symbol\n");
	256	break;
d696c285	257	default:
a61fdf0a A	258	printf("kind: unknown\n");
a61fdf0a A	259	}
d696c285	260
c2646906	261	// segment and section
2f2f92e4	262	if(!sPrintRestrict && (atom->getSectionName() != NULL) )
a61fdf0a	263	printf("section: %s,%s\n", atom->getSegment().getName(), atom->getSectionName());
c2646906 A	264
c2646906 A	265	// attributes
a61fdf0a A	266	if(!sPrintRestrict) {
	267	printf("attrs: ");
	268	if ( atom->dontDeadStrip() )
	269	printf("dont-dead-strip ");
	270	if ( atom->isZeroFill() )
	271	printf("zero-fill ");
2f2f92e4 A	272	if ( atom->isThumb() )
2f2f92e4 A	273	printf("thumb ");
a61fdf0a A	274	printf("\n");
a61fdf0a A	275	}
c2646906 A	276
c2646906 A	277	// size
a61fdf0a A	278	if(!sPrintRestrict)
a61fdf0a A	279	printf("size: 0x%012llX\n", atom->getSize());
c2646906 A	280
c2646906 A	281	// alignment
a61fdf0a A	282	if(!sPrintRestrict \|\| sPrintAlign)
a61fdf0a A	283	printf("align: %u mod %u\n", atom->getAlignment().modulus, (1 << atom->getAlignment().powerOf2) );
c2646906 A	284
c2646906 A	285	// content
a61fdf0a	286	if (!sPrintRestrict && sDumpContent ) {
d696c285 A	287	uint64_t size = atom->getSize();
	288	if ( size < 4096 ) {
	289	uint8_t content[size];
	290	atom->copyRawContent(content);
	291	printf("content: ");
	292	if ( strcmp(atom->getSectionName(), "__cstring") == 0 ) {
a61fdf0a A	293	printf("\"");
	294	for (unsigned int i=0; i < size; ++i) {
	295	if(content[i]<'!' \|\| content[i]>=127)
	296	printf("\\%o", content[i]);
	297	else
	298	printf("%c", content[i]);
	299	}
	300	printf("\"");
d696c285 A	301	}
	302	else {
	303	for (unsigned int i=0; i < size; ++i)
	304	printf("%02X ", content[i]);
	305	}
c2646906	306	}
d696c285	307	printf("\n");
c2646906	308	}
c2646906 A	309
c2646906 A	310	// references
a61fdf0a A	311	if(!sPrintRestrict) {
	312	std::vector<ObjectFile::Reference*>& references = atom->getReferences();
	313	const int refCount = references.size();
	314	printf("references: (%u)\n", refCount);
	315	for (int i=0; i < refCount; ++i) {
	316	ObjectFile::Reference* ref = references[i];
	317	printf(" %s\n", ref->getDescription());
	318	}
c2646906 A	319	}
c2646906 A	320
d696c285	321	// line info
a61fdf0a A	322	if(!sPrintRestrict) {
	323	std::vector<ObjectFile::LineInfo>* lineInfo = atom->getLineInfo();
	324	if ( (lineInfo != NULL) && (lineInfo->size() > 0) ) {
	325	printf("line info: (%lu)\n", lineInfo->size());
	326	for (std::vector<ObjectFile::LineInfo>::iterator it = lineInfo->begin(); it != lineInfo->end(); ++it) {
	327	printf(" offset 0x%04X, line %d, file %s\n", it->atomOffset, it->lineNumber, it->fileName);
	328	}
d696c285 A	329	}
	330	}
	331
a61fdf0a A	332	if(!sPrintRestrict)
a61fdf0a A	333	printf("\n");
c2646906 A	334	}
c2646906 A	335
d696c285 A	336	struct AtomSorter
d696c285 A	337	{
a61fdf0a	338	bool operator()(const ObjectFile::Atom* left, const ObjectFile::Atom* right)
d696c285	339	{
a61fdf0a A	340	if ( left == right )
	341	return false;
	342	return (strcmp(left->getDisplayName(), right->getDisplayName()) < 0);
d696c285 A	343	}
	344	};
	345
c2646906 A	346
	347	static void dumpFile(ObjectFile::Reader* reader)
	348	{
d696c285 A	349	// stabs debug info
	350	if ( sDumpStabs && (reader->getDebugInfoKind() == ObjectFile::Reader::kDebugInfoStabs) ) {
	351	std::vector<ObjectFile::Reader::Stab>* stabs = reader->getStabs();
	352	if ( stabs != NULL )
	353	dumpStabs(stabs);
	354	}
	355
	356	// get all atoms
c2646906	357	std::vector<ObjectFile::Atom*> atoms = reader->getAtoms();
d696c285 A	358
	359	// make copy of vector and sort (so output is canonical)
	360	std::vector<ObjectFile::Atom*> sortedAtoms(atoms);
	361	if ( sSort )
	362	std::sort(sortedAtoms.begin(), sortedAtoms.end(), AtomSorter());
	363
2f2f92e4 A	364	for(std::vector<ObjectFile::Atom*>::iterator it=sortedAtoms.begin(); it != sortedAtoms.end(); ++it) {
	365	if ( sNMmode )
	366	dumpAtomLikeNM(*it);
	367	else
	368	dumpAtom(*it);
	369	}
c2646906 A	370	}
	371
	372
	373	static ObjectFile::Reader* createReader(const char* path, const ObjectFile::ReaderOptions& options)
	374	{
	375	struct stat stat_buf;
	376
	377	int fd = ::open(path, O_RDONLY, 0);
	378	if ( fd == -1 )
d696c285	379	throwf("cannot open file: %s", path);
c2646906	380	::fstat(fd, &stat_buf);
69a49097	381	uint8_t* p = (uint8_t*)::mmap(NULL, stat_buf.st_size, PROT_READ, MAP_FILE \| MAP_PRIVATE, fd, 0);
c2646906 A	382	::close(fd);
	383	const mach_header* mh = (mach_header*)p;
	384	if ( mh->magic == OSSwapBigToHostInt32(FAT_MAGIC) ) {
	385	const struct fat_header* fh = (struct fat_header*)p;
	386	const struct fat_arch* archs = (struct fat_arch*)(p + sizeof(struct fat_header));
69a49097	387	for (unsigned long i=0; i < OSSwapBigToHostInt32(fh->nfat_arch); ++i) {
69a49097 A	388	if ( OSSwapBigToHostInt32(archs[i].cputype) == (uint32_t)sPreferredArch ) {
69a49097 A	389	p = p + OSSwapBigToHostInt32(archs[i].offset);
c2646906 A	390	mh = (struct mach_header*)p;
	391	}
	392	}
	393	}
d696c285	394	if ( mach_o::relocatable::Reader<x86>::validFile(p) )
a61fdf0a	395	return new mach_o::relocatable::Reader<x86>::Reader(p, path, 0, options, 0);
d696c285	396	else if ( mach_o::relocatable::Reader<ppc>::validFile(p) )
a61fdf0a	397	return new mach_o::relocatable::Reader<ppc>::Reader(p, path, 0, options, 0);
d696c285	398	else if ( mach_o::relocatable::Reader<ppc64>::validFile(p) )
a61fdf0a	399	return new mach_o::relocatable::Reader<ppc64>::Reader(p, path, 0, options, 0);
69a49097	400	else if ( mach_o::relocatable::Reader<x86_64>::validFile(p) )
a61fdf0a	401	return new mach_o::relocatable::Reader<x86_64>::Reader(p, path, 0, options, 0);
2f2f92e4 A	402	else if ( mach_o::relocatable::Reader<arm>::validFile(p) )
	403	return new mach_o::relocatable::Reader<arm>::Reader(p, path, 0, options, 0);
	404	if ( lto::Reader::validFile(p, stat_buf.st_size, 0) ) {
	405	return new lto::Reader(p, stat_buf.st_size, path, 0, options, 0);
	406	}
	407
d696c285	408	throwf("not a mach-o object file: %s", path);
c2646906 A	409	}
c2646906 A	410
a61fdf0a A	411	static
	412	void
	413	usage()
	414	{
	415	fprintf(stderr, "ObjectDump options:\n"
	416	"\t-no_content\tdon't dump contents\n"
	417	"\t-stabs\t\tdump stabs\n"
	418	"\t-arch aaa\tonly dump info about arch aaa\n"
	419	"\t-only sym\tonly dump info about sym\n"
	420	"\t-align\t\tonly print alignment info\n"
	421	"\t-name\t\tonly print symbol names\n"
	422	);
	423	}
c2646906 A	424
	425	int main(int argc, const char* argv[])
	426	{
a61fdf0a A	427	if(argc<2) {
	428	usage();
	429	return 0;
	430	}
	431
c2646906	432	ObjectFile::ReaderOptions options;
c2646906	433	try {
d696c285 A	434	for(int i=1; i < argc; ++i) {
	435	const char* arg = argv[i];
	436	if ( arg[0] == '-' ) {
	437	if ( strcmp(arg, "-no_content") == 0 ) {
	438	sDumpContent = false;
	439	}
2f2f92e4 A	440	else if ( strcmp(arg, "-nm") == 0 ) {
	441	sNMmode = true;
	442	}
d696c285 A	443	else if ( strcmp(arg, "-stabs") == 0 ) {
	444	sDumpStabs = true;
	445	}
	446	else if ( strcmp(arg, "-no_sort") == 0 ) {
	447	sSort = false;
	448	}
	449	else if ( strcmp(arg, "-arch") == 0 ) {
a61fdf0a	450	const char* arch = ++i<argc? argv[i]: "";
d696c285 A	451	if ( strcmp(arch, "ppc64") == 0 )
	452	sPreferredArch = CPU_TYPE_POWERPC64;
	453	else if ( strcmp(arch, "ppc") == 0 )
	454	sPreferredArch = CPU_TYPE_POWERPC;
	455	else if ( strcmp(arch, "i386") == 0 )
	456	sPreferredArch = CPU_TYPE_I386;
69a49097 A	457	else if ( strcmp(arch, "x86_64") == 0 )
69a49097 A	458	sPreferredArch = CPU_TYPE_X86_64;
d696c285 A	459	else
	460	throwf("unknown architecture %s", arch);
	461	}
a61fdf0a A	462	else if ( strcmp(arg, "-only") == 0 ) {
	463	sMatchName = ++i<argc? argv[i]: NULL;
	464	}
	465	else if ( strcmp(arg, "-align") == 0 ) {
	466	sPrintRestrict = true;
	467	sPrintAlign = true;
	468	}
	469	else if ( strcmp(arg, "-name") == 0 ) {
	470	sPrintRestrict = true;
	471	sPrintName = true;
	472	}
d696c285	473	else {
a61fdf0a	474	usage();
d696c285 A	475	throwf("unknown option: %s\n", arg);
	476	}
	477	}
	478	else {
	479	ObjectFile::Reader* reader = createReader(arg, options);
	480	dumpFile(reader);
	481	}
	482	}
c2646906 A	483	}
	484	catch (const char* msg) {
	485	fprintf(stderr, "ObjDump failed: %s\n", msg);
d696c285	486	return 1;
c2646906 A	487	}
	488
	489	return 0;
	490	}