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| 1 // -*- mode: c++ -*- | |
| 2 | |
| 3 // Copyright (c) 2011, Google Inc. | |
| 4 // All rights reserved. | |
| 5 // | |
| 6 // Redistribution and use in source and binary forms, with or without | |
| 7 // modification, are permitted provided that the following conditions are | |
| 8 // met: | |
| 9 // | |
| 10 // * Redistributions of source code must retain the above copyright | |
| 11 // notice, this list of conditions and the following disclaimer. | |
| 12 // * Redistributions in binary form must reproduce the above | |
| 13 // copyright notice, this list of conditions and the following disclaimer | |
| 14 // in the documentation and/or other materials provided with the | |
| 15 // distribution. | |
| 16 // * Neither the name of Google Inc. nor the names of its | |
| 17 // contributors may be used to endorse or promote products derived from | |
| 18 // this software without specific prior written permission. | |
| 19 // | |
| 20 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 21 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 22 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 23 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 24 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 25 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 26 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 27 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 28 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 29 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 30 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 31 | |
| 32 // dump_syms_tool.mm: Command line tool that uses the DumpSymbols class. | |
| 33 // TODO(waylonis): accept stdin | |
| 34 | |
| 35 #include <mach-o/arch.h> | |
| 36 #include <unistd.h> | |
| 37 | |
| 38 #include <iostream> | |
| 39 #include <vector> | |
| 40 | |
| 41 #include "common/mac/dump_syms.h" | |
| 42 #include "common/mac/arch_utilities.h" | |
| 43 #include "common/mac/macho_utilities.h" | |
| 44 #include "common/scoped_ptr.h" | |
| 45 | |
| 46 using google_breakpad::DumpSymbols; | |
| 47 using google_breakpad::Module; | |
| 48 using google_breakpad::scoped_ptr; | |
| 49 using std::vector; | |
| 50 | |
| 51 struct Options { | |
| 52 Options() | |
| 53 : srcPath(), dsymPath(), arch(), cfi(true), handle_inter_cu_refs(true) {} | |
| 54 NSString *srcPath; | |
| 55 NSString *dsymPath; | |
| 56 const NXArchInfo *arch; | |
| 57 bool cfi; | |
| 58 bool handle_inter_cu_refs; | |
| 59 }; | |
| 60 | |
| 61 static bool StackFrameEntryComparator(const Module::StackFrameEntry* a, | |
| 62 const Module::StackFrameEntry* b) { | |
| 63 return a->address < b->address; | |
| 64 } | |
| 65 | |
| 66 // Copy the CFI data from |from_module| into |to_module|, for any non- | |
| 67 // overlapping ranges. | |
| 68 static void CopyCFIDataBetweenModules(Module* to_module, | |
| 69 const Module* from_module) { | |
| 70 typedef vector<Module::StackFrameEntry*>::const_iterator Iterator; | |
| 71 | |
| 72 // Get the CFI data from both the source and destination modules and ensure | |
| 73 // it is sorted by start address. | |
| 74 vector<Module::StackFrameEntry*> from_data; | |
| 75 from_module->GetStackFrameEntries(&from_data); | |
| 76 std::sort(from_data.begin(), from_data.end(), &StackFrameEntryComparator); | |
| 77 | |
| 78 vector<Module::StackFrameEntry*> to_data; | |
| 79 to_module->GetStackFrameEntries(&to_data); | |
| 80 std::sort(to_data.begin(), to_data.end(), &StackFrameEntryComparator); | |
| 81 | |
| 82 Iterator to_it = to_data.begin(); | |
| 83 | |
| 84 for (Iterator it = from_data.begin(); it != from_data.end(); ++it) { | |
| 85 Module::StackFrameEntry* from_entry = *it; | |
| 86 Module::Address from_entry_end = from_entry->address + from_entry->size; | |
| 87 | |
| 88 // Find the first CFI record in the |to_module| that does not have an | |
| 89 // address less than the entry to be copied. | |
| 90 while (to_it != to_data.end()) { | |
| 91 if (from_entry->address > (*to_it)->address) | |
| 92 ++to_it; | |
| 93 else | |
| 94 break; | |
| 95 } | |
| 96 | |
| 97 // If the entry does not overlap, then it is safe to copy to |to_module|. | |
| 98 if (to_it == to_data.end() || (from_entry->address < (*to_it)->address && | |
| 99 from_entry_end < (*to_it)->address)) { | |
| 100 to_module->AddStackFrameEntry(new Module::StackFrameEntry(*from_entry)); | |
| 101 } | |
| 102 } | |
| 103 } | |
| 104 | |
| 105 static bool Start(const Options &options) { | |
| 106 SymbolData symbol_data = options.cfi ? ALL_SYMBOL_DATA : NO_CFI; | |
| 107 DumpSymbols dump_symbols(symbol_data, options.handle_inter_cu_refs); | |
| 108 | |
| 109 // For x86_64 binaries, the CFI data is in the __TEXT,__eh_frame of the | |
| 110 // Mach-O file, which is not copied into the dSYM. Whereas in i386, the CFI | |
| 111 // data is in the __DWARF,__debug_frame section, which is moved into the | |
| 112 // dSYM. Therefore, to get x86_64 CFI data, dump_syms needs to look at both | |
| 113 // the dSYM and the Mach-O file. If both paths are present and CFI was | |
| 114 // requested, then consider the Module as "split" and dump all the debug data | |
| 115 // from the primary debug info file, the dSYM, and then dump additional CFI | |
| 116 // data from the source Mach-O file. | |
| 117 bool split_module = options.dsymPath && options.srcPath && options.cfi; | |
| 118 NSString* primary_file = split_module ? options.dsymPath : options.srcPath; | |
| 119 | |
| 120 if (!dump_symbols.Read(primary_file)) | |
| 121 return false; | |
| 122 | |
| 123 if (options.arch) { | |
| 124 if (!dump_symbols.SetArchitecture(options.arch->cputype, | |
| 125 options.arch->cpusubtype)) { | |
| 126 fprintf(stderr, "%s: no architecture '%s' is present in file.\n", | |
| 127 [primary_file fileSystemRepresentation], options.arch->name); | |
| 128 size_t available_size; | |
| 129 const SuperFatArch *available = | |
| 130 dump_symbols.AvailableArchitectures(&available_size); | |
| 131 if (available_size == 1) | |
| 132 fprintf(stderr, "the file's architecture is: "); | |
| 133 else | |
| 134 fprintf(stderr, "architectures present in the file are:\n"); | |
| 135 for (size_t i = 0; i < available_size; i++) { | |
| 136 const SuperFatArch *arch = &available[i]; | |
| 137 const NXArchInfo *arch_info = | |
| 138 google_breakpad::BreakpadGetArchInfoFromCpuType( | |
| 139 arch->cputype, arch->cpusubtype); | |
| 140 if (arch_info) | |
| 141 fprintf(stderr, "%s (%s)\n", arch_info->name, arch_info->description); | |
| 142 else | |
| 143 fprintf(stderr, "unrecognized cpu type 0x%x, subtype 0x%x\n", | |
| 144 arch->cputype, arch->cpusubtype); | |
| 145 } | |
| 146 return false; | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 // Read the primary file into a Breakpad Module. | |
| 151 Module* module = NULL; | |
| 152 if (!dump_symbols.ReadSymbolData(&module)) | |
| 153 return false; | |
| 154 scoped_ptr<Module> scoped_module(module); | |
| 155 | |
| 156 // If this is a split module, read the secondary Mach-O file, from which the | |
| 157 // CFI data will be extracted. | |
| 158 if (split_module && primary_file == options.dsymPath) { | |
| 159 if (!dump_symbols.Read(options.srcPath)) | |
| 160 return false; | |
| 161 | |
| 162 Module* cfi_module = NULL; | |
| 163 if (!dump_symbols.ReadSymbolData(&cfi_module)) | |
| 164 return false; | |
| 165 scoped_ptr<Module> scoped_cfi_module(cfi_module); | |
| 166 | |
| 167 // Ensure that the modules are for the same debug code file. | |
| 168 if (cfi_module->name() != module->name() || | |
| 169 cfi_module->os() != module->os() || | |
| 170 cfi_module->architecture() != module->architecture() || | |
| 171 cfi_module->identifier() != module->identifier()) { | |
| 172 fprintf(stderr, "Cannot generate a symbol file from split sources that do" | |
| 173 " not match.\n"); | |
| 174 return false; | |
| 175 } | |
| 176 | |
| 177 CopyCFIDataBetweenModules(module, cfi_module); | |
| 178 } | |
| 179 | |
| 180 return module->Write(std::cout, symbol_data); | |
| 181 } | |
| 182 | |
| 183 //============================================================================= | |
| 184 static void Usage(int argc, const char *argv[]) { | |
| 185 fprintf(stderr, "Output a Breakpad symbol file from a Mach-o file.\n"); | |
| 186 fprintf(stderr, "Usage: %s [-a ARCHITECTURE] [-c] [-g dSYM path] " | |
| 187 "<Mach-o file>\n", argv[0]); | |
| 188 fprintf(stderr, "\t-a: Architecture type [default: native, or whatever is\n"); | |
| 189 fprintf(stderr, "\t in the file, if it contains only one architecture]\n"); | |
| 190 fprintf(stderr, "\t-g: Debug symbol file (dSYM) to dump in addition to the " | |
| 191 "Mach-o file\n"); | |
| 192 fprintf(stderr, "\t-c: Do not generate CFI section\n"); | |
| 193 fprintf(stderr, "\t-r: Do not handle inter-compilation unit references\n"); | |
| 194 fprintf(stderr, "\t-h: Usage\n"); | |
| 195 fprintf(stderr, "\t-?: Usage\n"); | |
| 196 } | |
| 197 | |
| 198 //============================================================================= | |
| 199 static void SetupOptions(int argc, const char *argv[], Options *options) { | |
| 200 extern int optind; | |
| 201 signed char ch; | |
| 202 | |
| 203 while ((ch = getopt(argc, (char * const *)argv, "a:g:chr?")) != -1) { | |
| 204 switch (ch) { | |
| 205 case 'a': { | |
| 206 const NXArchInfo *arch_info = | |
| 207 google_breakpad::BreakpadGetArchInfoFromName(optarg); | |
| 208 if (!arch_info) { | |
| 209 fprintf(stderr, "%s: Invalid architecture: %s\n", argv[0], optarg); | |
| 210 Usage(argc, argv); | |
| 211 exit(1); | |
| 212 } | |
| 213 options->arch = arch_info; | |
| 214 break; | |
| 215 } | |
| 216 case 'g': | |
| 217 options->dsymPath = [[NSFileManager defaultManager] | |
| 218 stringWithFileSystemRepresentation:optarg length:strlen(optarg)]; | |
| 219 break; | |
| 220 case 'c': | |
| 221 options->cfi = false; | |
| 222 break; | |
| 223 case 'r': | |
| 224 options->handle_inter_cu_refs = false; | |
| 225 break; | |
| 226 case '?': | |
| 227 case 'h': | |
| 228 Usage(argc, argv); | |
| 229 exit(0); | |
| 230 break; | |
| 231 } | |
| 232 } | |
| 233 | |
| 234 if ((argc - optind) != 1) { | |
| 235 fprintf(stderr, "Must specify Mach-o file\n"); | |
| 236 Usage(argc, argv); | |
| 237 exit(1); | |
| 238 } | |
| 239 | |
| 240 options->srcPath = [[NSFileManager defaultManager] | |
| 241 stringWithFileSystemRepresentation:argv[optind] | |
| 242 length:strlen(argv[optind])]; | |
| 243 } | |
| 244 | |
| 245 //============================================================================= | |
| 246 int main (int argc, const char * argv[]) { | |
| 247 NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; | |
| 248 Options options; | |
| 249 bool result; | |
| 250 | |
| 251 SetupOptions(argc, argv, &options); | |
| 252 result = Start(options); | |
| 253 | |
| 254 [pool release]; | |
| 255 | |
| 256 return !result; | |
| 257 } | |
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Chromium Code Reviews
Issue 1340543002:
Fix Mac Breakpad host tools to build in Linux cross-compile (Closed)
Base URL: https://chromium.googlesource.com/breakpad/breakpad.git@master