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https://git.suyu.dev/suyu/breakpad.git
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3fef603b65
Patch provided by Thomas Schweitzer. BUG= Change-Id: Ib35cdf766e73e4936e66f75474d83c2602f8ceb4 Reviewed-on: https://chromium-review.googlesource.com/378059 Reviewed-by: Mark Mentovai <mark@chromium.org>
203 lines
7 KiB
C++
203 lines
7 KiB
C++
// Copyright (c) 2010, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
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// macho_dump.cc: Dump the contents of a Mach-O file. This is mostly
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// a test program for the Mach_O::FatReader and Mach_O::Reader classes.
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#include <errno.h>
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#include <fcntl.h>
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#include <libgen.h>
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#include <mach-o/arch.h>
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#include <sys/mman.h>
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#include <stdint.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <sstream>
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#include <string>
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#include <vector>
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#include "common/byte_cursor.h"
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#include "common/mac/arch_utilities.h"
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#include "common/mac/macho_reader.h"
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using google_breakpad::ByteBuffer;
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using std::ostringstream;
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using std::string;
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using std::vector;
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namespace {
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namespace mach_o = google_breakpad::mach_o;
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string program_name;
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int check_syscall(int result, const char *operation, const char *filename) {
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if (result < 0) {
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fprintf(stderr, "%s: %s '%s': %s\n",
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program_name.c_str(), operation,
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filename, strerror(errno));
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exit(1);
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}
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return result;
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}
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class DumpSection: public mach_o::Reader::SectionHandler {
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public:
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DumpSection() : index_(0) { }
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bool HandleSection(const mach_o::Section §ion) {
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printf(" section %d '%s' in segment '%s'\n"
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" address: 0x%llx\n"
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" alignment: 1 << %d B\n"
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" flags: %d\n"
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" size: %ld\n",
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index_++, section.section_name.c_str(), section.segment_name.c_str(),
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section.address, section.align,
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mach_o::SectionFlags(section.flags),
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section.contents.Size());
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return true;
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}
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private:
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int index_;
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};
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class DumpCommand: public mach_o::Reader::LoadCommandHandler {
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public:
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DumpCommand(mach_o::Reader *reader) : reader_(reader), index_(0) { }
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bool UnknownCommand(mach_o::LoadCommandType type,
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const ByteBuffer &contents) {
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printf(" load command %d: %d", index_++, type);
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return true;
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}
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bool SegmentCommand(const mach_o::Segment &segment) {
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printf(" load command %d: %s-bit segment '%s'\n"
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" address: 0x%llx\n"
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" memory size: 0x%llx\n"
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" maximum protection: 0x%x\n"
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" initial protection: 0x%x\n"
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" flags: %d\n"
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" section_list size: %ld B\n",
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index_++, (segment.bits_64 ? "64" : "32"), segment.name.c_str(),
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segment.vmaddr, segment.vmsize, segment.maxprot,
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segment.initprot, mach_o::SegmentFlags(segment.flags),
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segment.section_list.Size());
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DumpSection dump_section;
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return reader_->WalkSegmentSections(segment, &dump_section);
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}
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private:
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mach_o::Reader *reader_;
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int index_;
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};
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void DumpFile(const char *filename) {
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int fd = check_syscall(open(filename, O_RDONLY), "opening", filename);
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struct stat attributes;
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check_syscall(fstat(fd, &attributes),
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"getting file attributes for", filename);
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void *mapping = mmap(NULL, attributes.st_size, PROT_READ,
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MAP_PRIVATE, fd, 0);
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close(fd);
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check_syscall(mapping == (void *)-1 ? -1 : 0,
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"mapping contents of", filename);
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mach_o::FatReader::Reporter fat_reporter(filename);
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mach_o::FatReader fat_reader(&fat_reporter);
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if (!fat_reader.Read(reinterpret_cast<uint8_t *>(mapping),
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attributes.st_size)) {
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exit(1);
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}
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printf("filename: %s\n", filename);
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size_t object_files_size;
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const SuperFatArch* super_fat_object_files =
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fat_reader.object_files(&object_files_size);
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struct fat_arch *object_files;
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if (!super_fat_object_files->ConvertToFatArch(object_files)) {
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exit(1);
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}
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printf(" object file count: %ld\n", object_files_size);
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for (size_t i = 0; i < object_files_size; i++) {
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const struct fat_arch &file = object_files[i];
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const NXArchInfo *fat_arch_info =
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google_breakpad::BreakpadGetArchInfoFromCpuType(
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file.cputype, file.cpusubtype);
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printf("\n object file %ld:\n"
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" fat header:\n:"
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" CPU type: %s (%s)\n"
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" size: %d B\n"
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" alignment: 1<<%d B\n",
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i, fat_arch_info->name, fat_arch_info->description,
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file.size, file.align);
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ostringstream name;
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name << filename;
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if (object_files_size > 1)
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name << ", object file #" << i;
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ByteBuffer file_contents(reinterpret_cast<uint8_t *>(mapping)
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+ file.offset, file.size);
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mach_o::Reader::Reporter reporter(name.str());
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mach_o::Reader reader(&reporter);
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if (!reader.Read(file_contents, file.cputype, file.cpusubtype)) {
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exit(1);
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}
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const NXArchInfo *macho_arch_info =
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NXGetArchInfoFromCpuType(reader.cpu_type(),
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reader.cpu_subtype());
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printf(" Mach-O header:\n"
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" word size: %s\n"
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" CPU type: %s (%s)\n"
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" File type: %d\n"
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" flags: %x\n",
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(reader.bits_64() ? "64 bits" : "32 bits"),
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macho_arch_info->name, macho_arch_info->description,
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reader.file_type(), reader.flags());
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DumpCommand dump_command(&reader);
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reader.WalkLoadCommands(&dump_command);
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}
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munmap(mapping, attributes.st_size);
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}
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} // namespace
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int main(int argc, char **argv) {
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program_name = basename(argv[0]);
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if (argc == 1) {
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fprintf(stderr, "Usage: %s FILE ...\n"
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"Dump the contents of the Mach-O or fat binary files "
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"'FILE ...'.\n", program_name.c_str());
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}
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for (int i = 1; i < argc; i++) {
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DumpFile(argv[i]);
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}
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}
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