-/* -*- 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"
-
-#define LTO_SUPPORT 1
-
-#if LTO_SUPPORT
- #include "LTOReader.hpp"
-#endif
-
-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_SUPPORT
- if ( lto::Reader::validFile(p, stat_buf.st_size, 0) ) {
- return new lto::Reader(p, stat_buf.st_size, path, 0, options, 0);
- }
-#endif
-
- 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;
-}
projects / apple / ld64.git / blobdiff