toolkit/crashreporter/google-breakpad/src/processor/minidump_stackwalk.cc@6474c204b198
toolkit/crashreporter/google-breakpad/src/processor/minidump_stackwalk.cc
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 // Copyright (c) 2010 Google Inc.
2 // All rights reserved.
3 //
4 // Redistribution and use in source and binary forms, with or without
5 // modification, are permitted provided that the following conditions are
6 // met:
7 //
8 // * Redistributions of source code must retain the above copyright
9 // notice, this list of conditions and the following disclaimer.
10 // * Redistributions in binary form must reproduce the above
11 // copyright notice, this list of conditions and the following disclaimer
12 // in the documentation and/or other materials provided with the
13 // distribution.
14 // * Neither the name of Google Inc. nor the names of its
15 // contributors may be used to endorse or promote products derived from
16 // this software without specific prior written permission.
17 //
18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 // minidump_stackwalk.cc: Process a minidump with MinidumpProcessor, printing
31 // the results, including stack traces.
32 //
33 // Author: Mark Mentovai
35 #include <stdio.h>
36 #include <stdlib.h>
37 #include <string.h>
39 #include <string>
40 #include <vector>
42 #include "common/scoped_ptr.h"
43 #include "common/using_std_string.h"
44 #include "google_breakpad/processor/basic_source_line_resolver.h"
45 #include "google_breakpad/processor/call_stack.h"
46 #include "google_breakpad/processor/code_module.h"
47 #include "google_breakpad/processor/code_modules.h"
48 #include "google_breakpad/processor/minidump.h"
49 #include "google_breakpad/processor/minidump_processor.h"
50 #include "google_breakpad/processor/process_state.h"
51 #include "google_breakpad/processor/stack_frame_cpu.h"
52 #include "processor/logging.h"
53 #include "processor/pathname_stripper.h"
54 #include "processor/simple_symbol_supplier.h"
56 namespace {
58 using std::vector;
59 using google_breakpad::BasicSourceLineResolver;
60 using google_breakpad::CallStack;
61 using google_breakpad::CodeModule;
62 using google_breakpad::CodeModules;
63 using google_breakpad::MinidumpModule;
64 using google_breakpad::MinidumpProcessor;
65 using google_breakpad::PathnameStripper;
66 using google_breakpad::ProcessState;
67 using google_breakpad::scoped_ptr;
68 using google_breakpad::SimpleSymbolSupplier;
69 using google_breakpad::StackFrame;
70 using google_breakpad::StackFramePPC;
71 using google_breakpad::StackFrameSPARC;
72 using google_breakpad::StackFrameX86;
73 using google_breakpad::StackFrameAMD64;
74 using google_breakpad::StackFrameARM;
76 // Separator character for machine readable output.
77 static const char kOutputSeparator = '|';
79 // PrintRegister prints a register's name and value to stdout. It will
80 // print four registers on a line. For the first register in a set,
81 // pass 0 for |start_col|. For registers in a set, pass the most recent
82 // return value of PrintRegister.
83 // The caller is responsible for printing the final newline after a set
84 // of registers is completely printed, regardless of the number of calls
85 // to PrintRegister.
86 static const int kMaxWidth = 80; // optimize for an 80-column terminal
87 static int PrintRegister(const char *name, uint32_t value, int start_col) {
88 char buffer[64];
89 snprintf(buffer, sizeof(buffer), " %5s = 0x%08x", name, value);
91 if (start_col + static_cast<ssize_t>(strlen(buffer)) > kMaxWidth) {
92 start_col = 0;
93 printf("\n ");
94 }
95 fputs(buffer, stdout);
97 return start_col + strlen(buffer);
98 }
100 // PrintRegister64 does the same thing, but for 64-bit registers.
101 static int PrintRegister64(const char *name, uint64_t value, int start_col) {
102 char buffer[64];
103 snprintf(buffer, sizeof(buffer), " %5s = 0x%016" PRIx64 , name, value);
105 if (start_col + static_cast<ssize_t>(strlen(buffer)) > kMaxWidth) {
106 start_col = 0;
107 printf("\n ");
108 }
109 fputs(buffer, stdout);
111 return start_col + strlen(buffer);
112 }
114 // StripSeparator takes a string |original| and returns a copy
115 // of the string with all occurences of |kOutputSeparator| removed.
116 static string StripSeparator(const string &original) {
117 string result = original;
118 string::size_type position = 0;
119 while ((position = result.find(kOutputSeparator, position)) != string::npos) {
120 result.erase(position, 1);
121 }
122 position = 0;
123 while ((position = result.find('\n', position)) != string::npos) {
124 result.erase(position, 1);
125 }
126 return result;
127 }
129 // PrintStack prints the call stack in |stack| to stdout, in a reasonably
130 // useful form. Module, function, and source file names are displayed if
131 // they are available. The code offset to the base code address of the
132 // source line, function, or module is printed, preferring them in that
133 // order. If no source line, function, or module information is available,
134 // an absolute code offset is printed.
135 //
136 // If |cpu| is a recognized CPU name, relevant register state for each stack
137 // frame printed is also output, if available.
138 static void PrintStack(const CallStack *stack, const string &cpu) {
139 int frame_count = stack->frames()->size();
140 if (frame_count == 0) {
141 printf(" <no frames>\n");
142 }
143 for (int frame_index = 0; frame_index < frame_count; ++frame_index) {
144 const StackFrame *frame = stack->frames()->at(frame_index);
145 printf("%2d ", frame_index);
147 uint64_t instruction_address = frame->ReturnAddress();
149 if (frame->module) {
150 printf("%s", PathnameStripper::File(frame->module->code_file()).c_str());
151 if (!frame->function_name.empty()) {
152 printf("!%s", frame->function_name.c_str());
153 if (!frame->source_file_name.empty()) {
154 string source_file = PathnameStripper::File(frame->source_file_name);
155 printf(" [%s : %d + 0x%" PRIx64 "]",
156 source_file.c_str(),
157 frame->source_line,
158 instruction_address - frame->source_line_base);
159 } else {
160 printf(" + 0x%" PRIx64, instruction_address - frame->function_base);
161 }
162 } else {
163 printf(" + 0x%" PRIx64,
164 instruction_address - frame->module->base_address());
165 }
166 } else {
167 printf("0x%" PRIx64, instruction_address);
168 }
169 printf("\n ");
171 int sequence = 0;
172 if (cpu == "x86") {
173 const StackFrameX86 *frame_x86 =
174 reinterpret_cast<const StackFrameX86*>(frame);
176 if (frame_x86->context_validity & StackFrameX86::CONTEXT_VALID_EIP)
177 sequence = PrintRegister("eip", frame_x86->context.eip, sequence);
178 if (frame_x86->context_validity & StackFrameX86::CONTEXT_VALID_ESP)
179 sequence = PrintRegister("esp", frame_x86->context.esp, sequence);
180 if (frame_x86->context_validity & StackFrameX86::CONTEXT_VALID_EBP)
181 sequence = PrintRegister("ebp", frame_x86->context.ebp, sequence);
182 if (frame_x86->context_validity & StackFrameX86::CONTEXT_VALID_EBX)
183 sequence = PrintRegister("ebx", frame_x86->context.ebx, sequence);
184 if (frame_x86->context_validity & StackFrameX86::CONTEXT_VALID_ESI)
185 sequence = PrintRegister("esi", frame_x86->context.esi, sequence);
186 if (frame_x86->context_validity & StackFrameX86::CONTEXT_VALID_EDI)
187 sequence = PrintRegister("edi", frame_x86->context.edi, sequence);
188 if (frame_x86->context_validity == StackFrameX86::CONTEXT_VALID_ALL) {
189 sequence = PrintRegister("eax", frame_x86->context.eax, sequence);
190 sequence = PrintRegister("ecx", frame_x86->context.ecx, sequence);
191 sequence = PrintRegister("edx", frame_x86->context.edx, sequence);
192 sequence = PrintRegister("efl", frame_x86->context.eflags, sequence);
193 }
194 } else if (cpu == "ppc") {
195 const StackFramePPC *frame_ppc =
196 reinterpret_cast<const StackFramePPC*>(frame);
198 if (frame_ppc->context_validity & StackFramePPC::CONTEXT_VALID_SRR0)
199 sequence = PrintRegister("srr0", frame_ppc->context.srr0, sequence);
200 if (frame_ppc->context_validity & StackFramePPC::CONTEXT_VALID_GPR1)
201 sequence = PrintRegister("r1", frame_ppc->context.gpr[1], sequence);
202 } else if (cpu == "amd64") {
203 const StackFrameAMD64 *frame_amd64 =
204 reinterpret_cast<const StackFrameAMD64*>(frame);
206 if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RBX)
207 sequence = PrintRegister64("rbx", frame_amd64->context.rbx, sequence);
208 if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R12)
209 sequence = PrintRegister64("r12", frame_amd64->context.r12, sequence);
210 if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R13)
211 sequence = PrintRegister64("r13", frame_amd64->context.r13, sequence);
212 if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R14)
213 sequence = PrintRegister64("r14", frame_amd64->context.r14, sequence);
214 if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R15)
215 sequence = PrintRegister64("r15", frame_amd64->context.r15, sequence);
216 if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RIP)
217 sequence = PrintRegister64("rip", frame_amd64->context.rip, sequence);
218 if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RSP)
219 sequence = PrintRegister64("rsp", frame_amd64->context.rsp, sequence);
220 if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RBP)
221 sequence = PrintRegister64("rbp", frame_amd64->context.rbp, sequence);
222 } else if (cpu == "sparc") {
223 const StackFrameSPARC *frame_sparc =
224 reinterpret_cast<const StackFrameSPARC*>(frame);
226 if (frame_sparc->context_validity & StackFrameSPARC::CONTEXT_VALID_SP)
227 sequence = PrintRegister("sp", frame_sparc->context.g_r[14], sequence);
228 if (frame_sparc->context_validity & StackFrameSPARC::CONTEXT_VALID_FP)
229 sequence = PrintRegister("fp", frame_sparc->context.g_r[30], sequence);
230 if (frame_sparc->context_validity & StackFrameSPARC::CONTEXT_VALID_PC)
231 sequence = PrintRegister("pc", frame_sparc->context.pc, sequence);
232 } else if (cpu == "arm") {
233 const StackFrameARM *frame_arm =
234 reinterpret_cast<const StackFrameARM*>(frame);
236 // Argument registers (caller-saves), which will likely only be valid
237 // for the youngest frame.
238 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R0)
239 sequence = PrintRegister("r0", frame_arm->context.iregs[0], sequence);
240 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R1)
241 sequence = PrintRegister("r1", frame_arm->context.iregs[1], sequence);
242 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R2)
243 sequence = PrintRegister("r2", frame_arm->context.iregs[2], sequence);
244 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R3)
245 sequence = PrintRegister("r3", frame_arm->context.iregs[3], sequence);
247 // General-purpose callee-saves registers.
248 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R4)
249 sequence = PrintRegister("r4", frame_arm->context.iregs[4], sequence);
250 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R5)
251 sequence = PrintRegister("r5", frame_arm->context.iregs[5], sequence);
252 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R6)
253 sequence = PrintRegister("r6", frame_arm->context.iregs[6], sequence);
254 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R7)
255 sequence = PrintRegister("r7", frame_arm->context.iregs[7], sequence);
256 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R8)
257 sequence = PrintRegister("r8", frame_arm->context.iregs[8], sequence);
258 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R9)
259 sequence = PrintRegister("r9", frame_arm->context.iregs[9], sequence);
260 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R10)
261 sequence = PrintRegister("r10", frame_arm->context.iregs[10], sequence);
263 // Registers with a dedicated or conventional purpose.
264 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_FP)
265 sequence = PrintRegister("fp", frame_arm->context.iregs[11], sequence);
266 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_SP)
267 sequence = PrintRegister("sp", frame_arm->context.iregs[13], sequence);
268 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_LR)
269 sequence = PrintRegister("lr", frame_arm->context.iregs[14], sequence);
270 if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_PC)
271 sequence = PrintRegister("pc", frame_arm->context.iregs[15], sequence);
272 }
273 printf("\n Found by: %s\n", frame->trust_description().c_str());
274 }
275 }
277 // PrintStackMachineReadable prints the call stack in |stack| to stdout,
278 // in the following machine readable pipe-delimited text format:
279 // thread number|frame number|module|function|source file|line|offset
280 //
281 // Module, function, source file, and source line may all be empty
282 // depending on availability. The code offset follows the same rules as
283 // PrintStack above.
284 static void PrintStackMachineReadable(int thread_num, const CallStack *stack) {
285 int frame_count = stack->frames()->size();
286 for (int frame_index = 0; frame_index < frame_count; ++frame_index) {
287 const StackFrame *frame = stack->frames()->at(frame_index);
288 printf("%d%c%d%c", thread_num, kOutputSeparator, frame_index,
289 kOutputSeparator);
291 uint64_t instruction_address = frame->ReturnAddress();
293 if (frame->module) {
294 assert(!frame->module->code_file().empty());
295 printf("%s", StripSeparator(PathnameStripper::File(
296 frame->module->code_file())).c_str());
297 if (!frame->function_name.empty()) {
298 printf("%c%s", kOutputSeparator,
299 StripSeparator(frame->function_name).c_str());
300 if (!frame->source_file_name.empty()) {
301 printf("%c%s%c%d%c0x%" PRIx64,
302 kOutputSeparator,
303 StripSeparator(frame->source_file_name).c_str(),
304 kOutputSeparator,
305 frame->source_line,
306 kOutputSeparator,
307 instruction_address - frame->source_line_base);
308 } else {
309 printf("%c%c%c0x%" PRIx64,
310 kOutputSeparator, // empty source file
311 kOutputSeparator, // empty source line
312 kOutputSeparator,
313 instruction_address - frame->function_base);
314 }
315 } else {
316 printf("%c%c%c%c0x%" PRIx64,
317 kOutputSeparator, // empty function name
318 kOutputSeparator, // empty source file
319 kOutputSeparator, // empty source line
320 kOutputSeparator,
321 instruction_address - frame->module->base_address());
322 }
323 } else {
324 // the printf before this prints a trailing separator for module name
325 printf("%c%c%c%c0x%" PRIx64,
326 kOutputSeparator, // empty function name
327 kOutputSeparator, // empty source file
328 kOutputSeparator, // empty source line
329 kOutputSeparator,
330 instruction_address);
331 }
332 printf("\n");
333 }
334 }
336 // ContainsModule checks whether a given |module| is in the vector
337 // |modules_without_symbols|.
338 static bool ContainsModule(
339 const vector<const CodeModule*> *modules,
340 const CodeModule *module) {
341 assert(modules);
342 assert(module);
343 vector<const CodeModule*>::const_iterator iter;
344 for (iter = modules->begin(); iter != modules->end(); ++iter) {
345 if (module->debug_file().compare((*iter)->debug_file()) == 0 &&
346 module->debug_identifier().compare((*iter)->debug_identifier()) == 0) {
347 return true;
348 }
349 }
350 return false;
351 }
353 // PrintModule prints a single |module| to stdout.
354 // |modules_without_symbols| should contain the list of modules that were
355 // confirmed to be missing their symbols during the stack walk.
356 static void PrintModule(
357 const CodeModule *module,
358 const vector<const CodeModule*> *modules_without_symbols,
359 uint64_t main_address) {
360 string missing_symbols;
361 if (ContainsModule(modules_without_symbols, module)) {
362 missing_symbols = " (WARNING: No symbols, " +
363 PathnameStripper::File(module->debug_file()) + ", " +
364 module->debug_identifier() + ")";
365 }
366 uint64_t base_address = module->base_address();
367 printf("0x%08" PRIx64 " - 0x%08" PRIx64 " %s %s%s%s\n",
368 base_address, base_address + module->size() - 1,
369 PathnameStripper::File(module->code_file()).c_str(),
370 module->version().empty() ? "???" : module->version().c_str(),
371 main_address != 0 && base_address == main_address ? " (main)" : "",
372 missing_symbols.c_str());
373 }
375 // PrintModules prints the list of all loaded |modules| to stdout.
376 // |modules_without_symbols| should contain the list of modules that were
377 // confirmed to be missing their symbols during the stack walk.
378 static void PrintModules(
379 const CodeModules *modules,
380 const vector<const CodeModule*> *modules_without_symbols) {
381 if (!modules)
382 return;
384 printf("\n");
385 printf("Loaded modules:\n");
387 uint64_t main_address = 0;
388 const CodeModule *main_module = modules->GetMainModule();
389 if (main_module) {
390 main_address = main_module->base_address();
391 }
393 unsigned int module_count = modules->module_count();
394 for (unsigned int module_sequence = 0;
395 module_sequence < module_count;
396 ++module_sequence) {
397 const CodeModule *module = modules->GetModuleAtSequence(module_sequence);
398 PrintModule(module, modules_without_symbols, main_address);
399 }
400 }
402 // PrintModulesMachineReadable outputs a list of loaded modules,
403 // one per line, in the following machine-readable pipe-delimited
404 // text format:
405 // Module|{Module Filename}|{Version}|{Debug Filename}|{Debug Identifier}|
406 // {Base Address}|{Max Address}|{Main}
407 static void PrintModulesMachineReadable(const CodeModules *modules) {
408 if (!modules)
409 return;
411 uint64_t main_address = 0;
412 const CodeModule *main_module = modules->GetMainModule();
413 if (main_module) {
414 main_address = main_module->base_address();
415 }
417 unsigned int module_count = modules->module_count();
418 for (unsigned int module_sequence = 0;
419 module_sequence < module_count;
420 ++module_sequence) {
421 const CodeModule *module = modules->GetModuleAtSequence(module_sequence);
422 uint64_t base_address = module->base_address();
423 printf("Module%c%s%c%s%c%s%c%s%c0x%08" PRIx64 "%c0x%08" PRIx64 "%c%d\n",
424 kOutputSeparator,
425 StripSeparator(PathnameStripper::File(module->code_file())).c_str(),
426 kOutputSeparator, StripSeparator(module->version()).c_str(),
427 kOutputSeparator,
428 StripSeparator(PathnameStripper::File(module->debug_file())).c_str(),
429 kOutputSeparator,
430 StripSeparator(module->debug_identifier()).c_str(),
431 kOutputSeparator, base_address,
432 kOutputSeparator, base_address + module->size() - 1,
433 kOutputSeparator,
434 main_module != NULL && base_address == main_address ? 1 : 0);
435 }
436 }
438 static void PrintProcessState(const ProcessState& process_state) {
439 // Print OS and CPU information.
440 string cpu = process_state.system_info()->cpu;
441 string cpu_info = process_state.system_info()->cpu_info;
442 printf("Operating system: %s\n", process_state.system_info()->os.c_str());
443 printf(" %s\n",
444 process_state.system_info()->os_version.c_str());
445 printf("CPU: %s\n", cpu.c_str());
446 if (!cpu_info.empty()) {
447 // This field is optional.
448 printf(" %s\n", cpu_info.c_str());
449 }
450 printf(" %d CPU%s\n",
451 process_state.system_info()->cpu_count,
452 process_state.system_info()->cpu_count != 1 ? "s" : "");
453 printf("\n");
455 // Print crash information.
456 if (process_state.crashed()) {
457 printf("Crash reason: %s\n", process_state.crash_reason().c_str());
458 printf("Crash address: 0x%" PRIx64 "\n", process_state.crash_address());
459 } else {
460 printf("No crash\n");
461 }
463 string assertion = process_state.assertion();
464 if (!assertion.empty()) {
465 printf("Assertion: %s\n", assertion.c_str());
466 }
468 // If the thread that requested the dump is known, print it first.
469 int requesting_thread = process_state.requesting_thread();
470 if (requesting_thread != -1) {
471 printf("\n");
472 printf("Thread %d (%s)\n",
473 requesting_thread,
474 process_state.crashed() ? "crashed" :
475 "requested dump, did not crash");
476 PrintStack(process_state.threads()->at(requesting_thread), cpu);
477 }
479 // Print all of the threads in the dump.
480 int thread_count = process_state.threads()->size();
481 for (int thread_index = 0; thread_index < thread_count; ++thread_index) {
482 if (thread_index != requesting_thread) {
483 // Don't print the crash thread again, it was already printed.
484 printf("\n");
485 printf("Thread %d\n", thread_index);
486 PrintStack(process_state.threads()->at(thread_index), cpu);
487 }
488 }
490 PrintModules(process_state.modules(),
491 process_state.modules_without_symbols());
492 }
494 static void PrintProcessStateMachineReadable(const ProcessState& process_state)
495 {
496 // Print OS and CPU information.
497 // OS|{OS Name}|{OS Version}
498 // CPU|{CPU Name}|{CPU Info}|{Number of CPUs}
499 printf("OS%c%s%c%s\n", kOutputSeparator,
500 StripSeparator(process_state.system_info()->os).c_str(),
501 kOutputSeparator,
502 StripSeparator(process_state.system_info()->os_version).c_str());
503 printf("CPU%c%s%c%s%c%d\n", kOutputSeparator,
504 StripSeparator(process_state.system_info()->cpu).c_str(),
505 kOutputSeparator,
506 // this may be empty
507 StripSeparator(process_state.system_info()->cpu_info).c_str(),
508 kOutputSeparator,
509 process_state.system_info()->cpu_count);
511 int requesting_thread = process_state.requesting_thread();
513 // Print crash information.
514 // Crash|{Crash Reason}|{Crash Address}|{Crashed Thread}
515 printf("Crash%c", kOutputSeparator);
516 if (process_state.crashed()) {
517 printf("%s%c0x%" PRIx64 "%c",
518 StripSeparator(process_state.crash_reason()).c_str(),
519 kOutputSeparator, process_state.crash_address(), kOutputSeparator);
520 } else {
521 // print assertion info, if available, in place of crash reason,
522 // instead of the unhelpful "No crash"
523 string assertion = process_state.assertion();
524 if (!assertion.empty()) {
525 printf("%s%c%c", StripSeparator(assertion).c_str(),
526 kOutputSeparator, kOutputSeparator);
527 } else {
528 printf("No crash%c%c", kOutputSeparator, kOutputSeparator);
529 }
530 }
532 if (requesting_thread != -1) {
533 printf("%d\n", requesting_thread);
534 } else {
535 printf("\n");
536 }
538 PrintModulesMachineReadable(process_state.modules());
540 // blank line to indicate start of threads
541 printf("\n");
543 // If the thread that requested the dump is known, print it first.
544 if (requesting_thread != -1) {
545 PrintStackMachineReadable(requesting_thread,
546 process_state.threads()->at(requesting_thread));
547 }
549 // Print all of the threads in the dump.
550 int thread_count = process_state.threads()->size();
551 for (int thread_index = 0; thread_index < thread_count; ++thread_index) {
552 if (thread_index != requesting_thread) {
553 // Don't print the crash thread again, it was already printed.
554 PrintStackMachineReadable(thread_index,
555 process_state.threads()->at(thread_index));
556 }
557 }
558 }
560 // Processes |minidump_file| using MinidumpProcessor. |symbol_path|, if
561 // non-empty, is the base directory of a symbol storage area, laid out in
562 // the format required by SimpleSymbolSupplier. If such a storage area
563 // is specified, it is made available for use by the MinidumpProcessor.
564 //
565 // Returns the value of MinidumpProcessor::Process. If processing succeeds,
566 // prints identifying OS and CPU information from the minidump, crash
567 // information if the minidump was produced as a result of a crash, and
568 // call stacks for each thread contained in the minidump. All information
569 // is printed to stdout.
570 static bool PrintMinidumpProcess(const string &minidump_file,
571 const vector<string> &symbol_paths,
572 bool machine_readable) {
573 scoped_ptr<SimpleSymbolSupplier> symbol_supplier;
574 if (!symbol_paths.empty()) {
575 // TODO(mmentovai): check existence of symbol_path if specified?
576 symbol_supplier.reset(new SimpleSymbolSupplier(symbol_paths));
577 }
579 BasicSourceLineResolver resolver;
580 MinidumpProcessor minidump_processor(symbol_supplier.get(), &resolver);
582 // Process the minidump.
583 ProcessState process_state;
584 if (minidump_processor.Process(minidump_file, &process_state) !=
585 google_breakpad::PROCESS_OK) {
586 BPLOG(ERROR) << "MinidumpProcessor::Process failed";
587 return false;
588 }
590 if (machine_readable) {
591 PrintProcessStateMachineReadable(process_state);
592 } else {
593 PrintProcessState(process_state);
594 }
596 return true;
597 }
599 } // namespace
601 static void usage(const char *program_name) {
602 fprintf(stderr, "usage: %s [-m] <minidump-file> [symbol-path ...]\n"
603 " -m : Output in machine-readable format\n",
604 program_name);
605 }
607 int main(int argc, char **argv) {
608 BPLOG_INIT(&argc, &argv);
610 if (argc < 2) {
611 usage(argv[0]);
612 return 1;
613 }
615 const char *minidump_file;
616 bool machine_readable;
617 int symbol_path_arg;
619 if (strcmp(argv[1], "-m") == 0) {
620 if (argc < 3) {
621 usage(argv[0]);
622 return 1;
623 }
625 machine_readable = true;
626 minidump_file = argv[2];
627 symbol_path_arg = 3;
628 } else {
629 machine_readable = false;
630 minidump_file = argv[1];
631 symbol_path_arg = 2;
632 }
634 // extra arguments are symbol paths
635 std::vector<string> symbol_paths;
636 if (argc > symbol_path_arg) {
637 for (int argi = symbol_path_arg; argi < argc; ++argi)
638 symbol_paths.push_back(argv[argi]);
639 }
641 return PrintMinidumpProcess(minidump_file,
642 symbol_paths,
643 machine_readable) ? 0 : 1;
644 }
