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Diffstat (limited to '')
-rw-r--r-- | toolkit/crashreporter/google-breakpad/src/tools/mac/dump_syms/macho_dump.cc | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/tools/mac/dump_syms/macho_dump.cc b/toolkit/crashreporter/google-breakpad/src/tools/mac/dump_syms/macho_dump.cc new file mode 100644 index 0000000000..6e784ca709 --- /dev/null +++ b/toolkit/crashreporter/google-breakpad/src/tools/mac/dump_syms/macho_dump.cc @@ -0,0 +1,203 @@ +// Copyright (c) 2010, Google Inc. +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com> + +// macho_dump.cc: Dump the contents of a Mach-O file. This is mostly +// a test program for the Mach_O::FatReader and Mach_O::Reader classes. + +#include <errno.h> +#include <fcntl.h> +#include <mach-o/arch.h> +#include <sys/mman.h> +#include <stdint.h> +#include <string.h> +#include <sys/stat.h> +#include <unistd.h> + +#include <sstream> +#include <string> +#include <vector> + +#include "common/byte_cursor.h" +#include "common/mac/arch_utilities.h" +#include "common/mac/macho_reader.h" +#include "common/path_helper.h" + +using google_breakpad::ByteBuffer; +using std::ostringstream; +using std::string; +using std::vector; + +namespace { +namespace mach_o = google_breakpad::mach_o; + +string program_name; + +int check_syscall(int result, const char *operation, const char *filename) { + if (result < 0) { + fprintf(stderr, "%s: %s '%s': %s\n", + program_name.c_str(), operation, + filename, strerror(errno)); + exit(1); + } + return result; +} + +class DumpSection: public mach_o::Reader::SectionHandler { + public: + DumpSection() : index_(0) { } + bool HandleSection(const mach_o::Section §ion) { + printf(" section %d '%s' in segment '%s'\n" + " address: 0x%llx\n" + " alignment: 1 << %d B\n" + " flags: %d\n" + " size: %ld\n", + index_++, section.section_name.c_str(), section.segment_name.c_str(), + section.address, section.align, + mach_o::SectionFlags(section.flags), + section.contents.Size()); + return true; + } + + private: + int index_; +}; + +class DumpCommand: public mach_o::Reader::LoadCommandHandler { + public: + DumpCommand(mach_o::Reader *reader) : reader_(reader), index_(0) { } + bool UnknownCommand(mach_o::LoadCommandType type, + const ByteBuffer &contents) { + printf(" load command %d: %d", index_++, type); + return true; + } + bool SegmentCommand(const mach_o::Segment &segment) { + printf(" load command %d: %s-bit segment '%s'\n" + " address: 0x%llx\n" + " memory size: 0x%llx\n" + " maximum protection: 0x%x\n" + " initial protection: 0x%x\n" + " flags: %d\n" + " section_list size: %ld B\n", + index_++, (segment.bits_64 ? "64" : "32"), segment.name.c_str(), + segment.vmaddr, segment.vmsize, segment.maxprot, + segment.initprot, mach_o::SegmentFlags(segment.flags), + segment.section_list.Size()); + + DumpSection dump_section; + return reader_->WalkSegmentSections(segment, &dump_section); + } + private: + mach_o::Reader *reader_; + int index_; +}; + +void DumpFile(const char *filename) { + int fd = check_syscall(open(filename, O_RDONLY), "opening", filename); + struct stat attributes; + check_syscall(fstat(fd, &attributes), + "getting file attributes for", filename); + void *mapping = mmap(NULL, attributes.st_size, PROT_READ, + MAP_PRIVATE, fd, 0); + close(fd); + check_syscall(mapping == (void *)-1 ? -1 : 0, + "mapping contents of", filename); + + mach_o::FatReader::Reporter fat_reporter(filename); + mach_o::FatReader fat_reader(&fat_reporter); + if (!fat_reader.Read(reinterpret_cast<uint8_t *>(mapping), + attributes.st_size)) { + exit(1); + } + printf("filename: %s\n", filename); + size_t object_files_size; + const SuperFatArch* super_fat_object_files = + fat_reader.object_files(&object_files_size); + struct fat_arch *object_files; + if (!super_fat_object_files->ConvertToFatArch(object_files)) { + exit(1); + } + printf(" object file count: %ld\n", object_files_size); + for (size_t i = 0; i < object_files_size; i++) { + const struct fat_arch &file = object_files[i]; + const NXArchInfo *fat_arch_info = + google_breakpad::BreakpadGetArchInfoFromCpuType( + file.cputype, file.cpusubtype); + printf("\n object file %ld:\n" + " fat header:\n:" + " CPU type: %s (%s)\n" + " size: %d B\n" + " alignment: 1<<%d B\n", + i, fat_arch_info->name, fat_arch_info->description, + file.size, file.align); + + ostringstream name; + name << filename; + if (object_files_size > 1) + name << ", object file #" << i; + ByteBuffer file_contents(reinterpret_cast<uint8_t *>(mapping) + + file.offset, file.size); + mach_o::Reader::Reporter reporter(name.str()); + mach_o::Reader reader(&reporter); + if (!reader.Read(file_contents, file.cputype, file.cpusubtype)) { + exit(1); + } + + const NXArchInfo *macho_arch_info = + NXGetArchInfoFromCpuType(reader.cpu_type(), + reader.cpu_subtype()); + printf(" Mach-O header:\n" + " word size: %s\n" + " CPU type: %s (%s)\n" + " File type: %d\n" + " flags: %x\n", + (reader.bits_64() ? "64 bits" : "32 bits"), + macho_arch_info->name, macho_arch_info->description, + reader.file_type(), reader.flags()); + + DumpCommand dump_command(&reader); + reader.WalkLoadCommands(&dump_command); + } + munmap(mapping, attributes.st_size); +} + +} // namespace + +int main(int argc, char **argv) { + program_name = google_breakpad::BaseName(argv[0]); + if (argc == 1) { + fprintf(stderr, "Usage: %s FILE ...\n" + "Dump the contents of the Mach-O or fat binary files " + "'FILE ...'.\n", program_name.c_str()); + } + for (int i = 1; i < argc; i++) { + DumpFile(argv[i]); + } +} |