// 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. // stackwalk_common.cc: Module shared by the {micro,mini}dump_stackwalck // executables to print the content of dumps (w/ stack traces) on the console. // // Author: Mark Mentovai #include "processor/stackwalk_common.h" #include #include #include #include #include #include "common/stdio_wrapper.h" #include "common/using_std_string.h" #include "google_breakpad/processor/call_stack.h" #include "google_breakpad/processor/code_module.h" #include "google_breakpad/processor/code_modules.h" #include "google_breakpad/processor/process_state.h" #include "google_breakpad/processor/source_line_resolver_interface.h" #include "google_breakpad/processor/stack_frame_cpu.h" #include "processor/logging.h" #include "processor/pathname_stripper.h" namespace google_breakpad { namespace { using std::vector; // Separator character for machine readable output. static const char kOutputSeparator = '|'; // PrintRegister prints a register's name and value to stdout. It will // print four registers on a line. For the first register in a set, // pass 0 for |start_col|. For registers in a set, pass the most recent // return value of PrintRegister. // The caller is responsible for printing the final newline after a set // of registers is completely printed, regardless of the number of calls // to PrintRegister. static const int kMaxWidth = 80; // optimize for an 80-column terminal static int PrintRegister(const char* name, uint32_t value, int start_col) { char buffer[64]; snprintf(buffer, sizeof(buffer), " %5s = 0x%08x", name, value); if (start_col + static_cast(strlen(buffer)) > kMaxWidth) { start_col = 0; printf("\n "); } fputs(buffer, stdout); return start_col + strlen(buffer); } // PrintRegister64 does the same thing, but for 64-bit registers. static int PrintRegister64(const char* name, uint64_t value, int start_col) { char buffer[64]; snprintf(buffer, sizeof(buffer), " %5s = 0x%016" PRIx64 , name, value); if (start_col + static_cast(strlen(buffer)) > kMaxWidth) { start_col = 0; printf("\n "); } fputs(buffer, stdout); return start_col + strlen(buffer); } // StripSeparator takes a string |original| and returns a copy // of the string with all occurences of |kOutputSeparator| removed. static string StripSeparator(const string& original) { string result = original; string::size_type position = 0; while ((position = result.find(kOutputSeparator, position)) != string::npos) { result.erase(position, 1); } position = 0; while ((position = result.find('\n', position)) != string::npos) { result.erase(position, 1); } return result; } // PrintStackContents prints the stack contents of the current frame to stdout. static void PrintStackContents(const string& indent, const StackFrame* frame, const StackFrame* prev_frame, const string& cpu, const MemoryRegion* memory, const CodeModules* modules, SourceLineResolverInterface* resolver) { // Find stack range. int word_length = 0; uint64_t stack_begin = 0, stack_end = 0; if (cpu == "x86") { word_length = 4; const StackFrameX86* frame_x86 = static_cast(frame); const StackFrameX86* prev_frame_x86 = static_cast(prev_frame); if ((frame_x86->context_validity & StackFrameX86::CONTEXT_VALID_ESP) && (prev_frame_x86->context_validity & StackFrameX86::CONTEXT_VALID_ESP)) { stack_begin = frame_x86->context.esp; stack_end = prev_frame_x86->context.esp; } } else if (cpu == "amd64") { word_length = 8; const StackFrameAMD64* frame_amd64 = static_cast(frame); const StackFrameAMD64* prev_frame_amd64 = static_cast(prev_frame); if ((frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RSP) && (prev_frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RSP)) { stack_begin = frame_amd64->context.rsp; stack_end = prev_frame_amd64->context.rsp; } } else if (cpu == "arm") { word_length = 4; const StackFrameARM* frame_arm = static_cast(frame); const StackFrameARM* prev_frame_arm = static_cast(prev_frame); if ((frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_SP) && (prev_frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_SP)) { stack_begin = frame_arm->context.iregs[13]; stack_end = prev_frame_arm->context.iregs[13]; } } else if (cpu == "arm64") { word_length = 8; const StackFrameARM64* frame_arm64 = static_cast(frame); const StackFrameARM64* prev_frame_arm64 = static_cast(prev_frame); if ((frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_SP) && (prev_frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_SP)) { stack_begin = frame_arm64->context.iregs[31]; stack_end = prev_frame_arm64->context.iregs[31]; } } if (!word_length || !stack_begin || !stack_end) return; // Print stack contents. printf("\n%sStack contents:", indent.c_str()); for(uint64_t address = stack_begin; address < stack_end; ) { // Print the start address of this row. if (word_length == 4) printf("\n%s %08x", indent.c_str(), static_cast(address)); else printf("\n%s %016" PRIx64, indent.c_str(), address); // Print data in hex. const int kBytesPerRow = 16; string data_as_string; for (int i = 0; i < kBytesPerRow; ++i, ++address) { uint8_t value = 0; if (address < stack_end && memory->GetMemoryAtAddress(address, &value)) { printf(" %02x", value); data_as_string.push_back(isprint(value) ? value : '.'); } else { printf(" "); data_as_string.push_back(' '); } } // Print data as string. printf(" %s", data_as_string.c_str()); } // Try to find instruction pointers from stack. printf("\n%sPossible instruction pointers:\n", indent.c_str()); for (uint64_t address = stack_begin; address < stack_end; address += word_length) { StackFrame pointee_frame; // Read a word (possible instruction pointer) from stack. if (word_length == 4) { uint32_t data32 = 0; memory->GetMemoryAtAddress(address, &data32); pointee_frame.instruction = data32; } else { uint64_t data64 = 0; memory->GetMemoryAtAddress(address, &data64); pointee_frame.instruction = data64; } pointee_frame.module = modules->GetModuleForAddress(pointee_frame.instruction); // Try to look up the function name. if (pointee_frame.module) resolver->FillSourceLineInfo(&pointee_frame); // Print function name. if (!pointee_frame.function_name.empty()) { if (word_length == 4) { printf("%s *(0x%08x) = 0x%08x", indent.c_str(), static_cast(address), static_cast(pointee_frame.instruction)); } else { printf("%s *(0x%016" PRIx64 ") = 0x%016" PRIx64, indent.c_str(), address, pointee_frame.instruction); } printf(" <%s> [%s : %d + 0x%" PRIx64 "]\n", pointee_frame.function_name.c_str(), PathnameStripper::File(pointee_frame.source_file_name).c_str(), pointee_frame.source_line, pointee_frame.instruction - pointee_frame.source_line_base); } } printf("\n"); } // PrintStack prints the call stack in |stack| to stdout, in a reasonably // useful form. Module, function, and source file names are displayed if // they are available. The code offset to the base code address of the // source line, function, or module is printed, preferring them in that // order. If no source line, function, or module information is available, // an absolute code offset is printed. // // If |cpu| is a recognized CPU name, relevant register state for each stack // frame printed is also output, if available. static void PrintStack(const CallStack* stack, const string& cpu, bool output_stack_contents, const MemoryRegion* memory, const CodeModules* modules, SourceLineResolverInterface* resolver) { int frame_count = stack->frames()->size(); if (frame_count == 0) { printf(" \n"); } for (int frame_index = 0; frame_index < frame_count; ++frame_index) { const StackFrame* frame = stack->frames()->at(frame_index); printf("%2d ", frame_index); uint64_t instruction_address = frame->ReturnAddress(); if (frame->module) { printf("%s", PathnameStripper::File(frame->module->code_file()).c_str()); if (!frame->function_name.empty()) { printf("!%s", frame->function_name.c_str()); if (!frame->source_file_name.empty()) { string source_file = PathnameStripper::File(frame->source_file_name); printf(" [%s : %d + 0x%" PRIx64 "]", source_file.c_str(), frame->source_line, instruction_address - frame->source_line_base); } else { printf(" + 0x%" PRIx64, instruction_address - frame->function_base); } } else { printf(" + 0x%" PRIx64, instruction_address - frame->module->base_address()); } } else { printf("0x%" PRIx64, instruction_address); } printf("\n "); int sequence = 0; if (cpu == "x86") { const StackFrameX86* frame_x86 = reinterpret_cast(frame); if (frame_x86->context_validity & StackFrameX86::CONTEXT_VALID_EIP) sequence = PrintRegister("eip", frame_x86->context.eip, sequence); if (frame_x86->context_validity & StackFrameX86::CONTEXT_VALID_ESP) sequence = PrintRegister("esp", frame_x86->context.esp, sequence); if (frame_x86->context_validity & StackFrameX86::CONTEXT_VALID_EBP) sequence = PrintRegister("ebp", frame_x86->context.ebp, sequence); if (frame_x86->context_validity & StackFrameX86::CONTEXT_VALID_EBX) sequence = PrintRegister("ebx", frame_x86->context.ebx, sequence); if (frame_x86->context_validity & StackFrameX86::CONTEXT_VALID_ESI) sequence = PrintRegister("esi", frame_x86->context.esi, sequence); if (frame_x86->context_validity & StackFrameX86::CONTEXT_VALID_EDI) sequence = PrintRegister("edi", frame_x86->context.edi, sequence); if (frame_x86->context_validity == StackFrameX86::CONTEXT_VALID_ALL) { sequence = PrintRegister("eax", frame_x86->context.eax, sequence); sequence = PrintRegister("ecx", frame_x86->context.ecx, sequence); sequence = PrintRegister("edx", frame_x86->context.edx, sequence); sequence = PrintRegister("efl", frame_x86->context.eflags, sequence); } } else if (cpu == "ppc") { const StackFramePPC* frame_ppc = reinterpret_cast(frame); if (frame_ppc->context_validity & StackFramePPC::CONTEXT_VALID_SRR0) sequence = PrintRegister("srr0", frame_ppc->context.srr0, sequence); if (frame_ppc->context_validity & StackFramePPC::CONTEXT_VALID_GPR1) sequence = PrintRegister("r1", frame_ppc->context.gpr[1], sequence); } else if (cpu == "amd64") { const StackFrameAMD64* frame_amd64 = reinterpret_cast(frame); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RAX) sequence = PrintRegister64("rax", frame_amd64->context.rax, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RDX) sequence = PrintRegister64("rdx", frame_amd64->context.rdx, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RCX) sequence = PrintRegister64("rcx", frame_amd64->context.rcx, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RBX) sequence = PrintRegister64("rbx", frame_amd64->context.rbx, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RSI) sequence = PrintRegister64("rsi", frame_amd64->context.rsi, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RDI) sequence = PrintRegister64("rdi", frame_amd64->context.rdi, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RBP) sequence = PrintRegister64("rbp", frame_amd64->context.rbp, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RSP) sequence = PrintRegister64("rsp", frame_amd64->context.rsp, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R8) sequence = PrintRegister64("r8", frame_amd64->context.r8, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R9) sequence = PrintRegister64("r9", frame_amd64->context.r9, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R10) sequence = PrintRegister64("r10", frame_amd64->context.r10, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R11) sequence = PrintRegister64("r11", frame_amd64->context.r11, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R12) sequence = PrintRegister64("r12", frame_amd64->context.r12, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R13) sequence = PrintRegister64("r13", frame_amd64->context.r13, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R14) sequence = PrintRegister64("r14", frame_amd64->context.r14, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_R15) sequence = PrintRegister64("r15", frame_amd64->context.r15, sequence); if (frame_amd64->context_validity & StackFrameAMD64::CONTEXT_VALID_RIP) sequence = PrintRegister64("rip", frame_amd64->context.rip, sequence); } else if (cpu == "sparc") { const StackFrameSPARC* frame_sparc = reinterpret_cast(frame); if (frame_sparc->context_validity & StackFrameSPARC::CONTEXT_VALID_SP) sequence = PrintRegister("sp", frame_sparc->context.g_r[14], sequence); if (frame_sparc->context_validity & StackFrameSPARC::CONTEXT_VALID_FP) sequence = PrintRegister("fp", frame_sparc->context.g_r[30], sequence); if (frame_sparc->context_validity & StackFrameSPARC::CONTEXT_VALID_PC) sequence = PrintRegister("pc", frame_sparc->context.pc, sequence); } else if (cpu == "arm") { const StackFrameARM* frame_arm = reinterpret_cast(frame); // Argument registers (caller-saves), which will likely only be valid // for the youngest frame. if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R0) sequence = PrintRegister("r0", frame_arm->context.iregs[0], sequence); if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R1) sequence = PrintRegister("r1", frame_arm->context.iregs[1], sequence); if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R2) sequence = PrintRegister("r2", frame_arm->context.iregs[2], sequence); if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R3) sequence = PrintRegister("r3", frame_arm->context.iregs[3], sequence); // General-purpose callee-saves registers. if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R4) sequence = PrintRegister("r4", frame_arm->context.iregs[4], sequence); if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R5) sequence = PrintRegister("r5", frame_arm->context.iregs[5], sequence); if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R6) sequence = PrintRegister("r6", frame_arm->context.iregs[6], sequence); if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R7) sequence = PrintRegister("r7", frame_arm->context.iregs[7], sequence); if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R8) sequence = PrintRegister("r8", frame_arm->context.iregs[8], sequence); if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R9) sequence = PrintRegister("r9", frame_arm->context.iregs[9], sequence); if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R10) sequence = PrintRegister("r10", frame_arm->context.iregs[10], sequence); if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_R12) sequence = PrintRegister("r12", frame_arm->context.iregs[12], sequence); // Registers with a dedicated or conventional purpose. if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_FP) sequence = PrintRegister("fp", frame_arm->context.iregs[11], sequence); if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_SP) sequence = PrintRegister("sp", frame_arm->context.iregs[13], sequence); if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_LR) sequence = PrintRegister("lr", frame_arm->context.iregs[14], sequence); if (frame_arm->context_validity & StackFrameARM::CONTEXT_VALID_PC) sequence = PrintRegister("pc", frame_arm->context.iregs[15], sequence); } else if (cpu == "arm64") { const StackFrameARM64* frame_arm64 = reinterpret_cast(frame); if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X0) { sequence = PrintRegister64("x0", frame_arm64->context.iregs[0], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X1) { sequence = PrintRegister64("x1", frame_arm64->context.iregs[1], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X2) { sequence = PrintRegister64("x2", frame_arm64->context.iregs[2], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X3) { sequence = PrintRegister64("x3", frame_arm64->context.iregs[3], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X4) { sequence = PrintRegister64("x4", frame_arm64->context.iregs[4], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X5) { sequence = PrintRegister64("x5", frame_arm64->context.iregs[5], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X6) { sequence = PrintRegister64("x6", frame_arm64->context.iregs[6], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X7) { sequence = PrintRegister64("x7", frame_arm64->context.iregs[7], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X8) { sequence = PrintRegister64("x8", frame_arm64->context.iregs[8], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X9) { sequence = PrintRegister64("x9", frame_arm64->context.iregs[9], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X10) { sequence = PrintRegister64("x10", frame_arm64->context.iregs[10], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X11) { sequence = PrintRegister64("x11", frame_arm64->context.iregs[11], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X12) { sequence = PrintRegister64("x12", frame_arm64->context.iregs[12], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X13) { sequence = PrintRegister64("x13", frame_arm64->context.iregs[13], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X14) { sequence = PrintRegister64("x14", frame_arm64->context.iregs[14], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X15) { sequence = PrintRegister64("x15", frame_arm64->context.iregs[15], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X16) { sequence = PrintRegister64("x16", frame_arm64->context.iregs[16], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X17) { sequence = PrintRegister64("x17", frame_arm64->context.iregs[17], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X18) { sequence = PrintRegister64("x18", frame_arm64->context.iregs[18], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X19) { sequence = PrintRegister64("x19", frame_arm64->context.iregs[19], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X20) { sequence = PrintRegister64("x20", frame_arm64->context.iregs[20], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X21) { sequence = PrintRegister64("x21", frame_arm64->context.iregs[21], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X22) { sequence = PrintRegister64("x22", frame_arm64->context.iregs[22], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X23) { sequence = PrintRegister64("x23", frame_arm64->context.iregs[23], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X24) { sequence = PrintRegister64("x24", frame_arm64->context.iregs[24], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X25) { sequence = PrintRegister64("x25", frame_arm64->context.iregs[25], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X26) { sequence = PrintRegister64("x26", frame_arm64->context.iregs[26], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X27) { sequence = PrintRegister64("x27", frame_arm64->context.iregs[27], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_X28) { sequence = PrintRegister64("x28", frame_arm64->context.iregs[28], sequence); } // Registers with a dedicated or conventional purpose. if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_FP) { sequence = PrintRegister64("fp", frame_arm64->context.iregs[29], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_LR) { sequence = PrintRegister64("lr", frame_arm64->context.iregs[30], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_SP) { sequence = PrintRegister64("sp", frame_arm64->context.iregs[31], sequence); } if (frame_arm64->context_validity & StackFrameARM64::CONTEXT_VALID_PC) { sequence = PrintRegister64("pc", frame_arm64->context.iregs[32], sequence); } } else if ((cpu == "mips") || (cpu == "mips64")) { const StackFrameMIPS* frame_mips = reinterpret_cast(frame); if (frame_mips->context_validity & StackFrameMIPS::CONTEXT_VALID_GP) sequence = PrintRegister64("gp", frame_mips->context.iregs[MD_CONTEXT_MIPS_REG_GP], sequence); if (frame_mips->context_validity & StackFrameMIPS::CONTEXT_VALID_SP) sequence = PrintRegister64("sp", frame_mips->context.iregs[MD_CONTEXT_MIPS_REG_SP], sequence); if (frame_mips->context_validity & StackFrameMIPS::CONTEXT_VALID_FP) sequence = PrintRegister64("fp", frame_mips->context.iregs[MD_CONTEXT_MIPS_REG_FP], sequence); if (frame_mips->context_validity & StackFrameMIPS::CONTEXT_VALID_RA) sequence = PrintRegister64("ra", frame_mips->context.iregs[MD_CONTEXT_MIPS_REG_RA], sequence); if (frame_mips->context_validity & StackFrameMIPS::CONTEXT_VALID_PC) sequence = PrintRegister64("pc", frame_mips->context.epc, sequence); // Save registers s0-s7 if (frame_mips->context_validity & StackFrameMIPS::CONTEXT_VALID_S0) sequence = PrintRegister64("s0", frame_mips->context.iregs[MD_CONTEXT_MIPS_REG_S0], sequence); if (frame_mips->context_validity & StackFrameMIPS::CONTEXT_VALID_S1) sequence = PrintRegister64("s1", frame_mips->context.iregs[MD_CONTEXT_MIPS_REG_S1], sequence); if (frame_mips->context_validity & StackFrameMIPS::CONTEXT_VALID_S2) sequence = PrintRegister64("s2", frame_mips->context.iregs[MD_CONTEXT_MIPS_REG_S2], sequence); if (frame_mips->context_validity & StackFrameMIPS::CONTEXT_VALID_S3) sequence = PrintRegister64("s3", frame_mips->context.iregs[MD_CONTEXT_MIPS_REG_S3], sequence); if (frame_mips->context_validity & StackFrameMIPS::CONTEXT_VALID_S4) sequence = PrintRegister64("s4", frame_mips->context.iregs[MD_CONTEXT_MIPS_REG_S4], sequence); if (frame_mips->context_validity & StackFrameMIPS::CONTEXT_VALID_S5) sequence = PrintRegister64("s5", frame_mips->context.iregs[MD_CONTEXT_MIPS_REG_S5], sequence); if (frame_mips->context_validity & StackFrameMIPS::CONTEXT_VALID_S6) sequence = PrintRegister64("s6", frame_mips->context.iregs[MD_CONTEXT_MIPS_REG_S6], sequence); if (frame_mips->context_validity & StackFrameMIPS::CONTEXT_VALID_S7) sequence = PrintRegister64("s7", frame_mips->context.iregs[MD_CONTEXT_MIPS_REG_S7], sequence); } printf("\n Found by: %s\n", frame->trust_description().c_str()); // Print stack contents. if (output_stack_contents && frame_index + 1 < frame_count) { const string indent(" "); PrintStackContents(indent, frame, stack->frames()->at(frame_index + 1), cpu, memory, modules, resolver); } } } // PrintStackMachineReadable prints the call stack in |stack| to stdout, // in the following machine readable pipe-delimited text format: // thread number|frame number|module|function|source file|line|offset // // Module, function, source file, and source line may all be empty // depending on availability. The code offset follows the same rules as // PrintStack above. static void PrintStackMachineReadable(int thread_num, const CallStack* stack) { int frame_count = stack->frames()->size(); for (int frame_index = 0; frame_index < frame_count; ++frame_index) { const StackFrame* frame = stack->frames()->at(frame_index); printf("%d%c%d%c", thread_num, kOutputSeparator, frame_index, kOutputSeparator); uint64_t instruction_address = frame->ReturnAddress(); if (frame->module) { assert(!frame->module->code_file().empty()); printf("%s", StripSeparator(PathnameStripper::File( frame->module->code_file())).c_str()); if (!frame->function_name.empty()) { printf("%c%s", kOutputSeparator, StripSeparator(frame->function_name).c_str()); if (!frame->source_file_name.empty()) { printf("%c%s%c%d%c0x%" PRIx64, kOutputSeparator, StripSeparator(frame->source_file_name).c_str(), kOutputSeparator, frame->source_line, kOutputSeparator, instruction_address - frame->source_line_base); } else { printf("%c%c%c0x%" PRIx64, kOutputSeparator, // empty source file kOutputSeparator, // empty source line kOutputSeparator, instruction_address - frame->function_base); } } else { printf("%c%c%c%c0x%" PRIx64, kOutputSeparator, // empty function name kOutputSeparator, // empty source file kOutputSeparator, // empty source line kOutputSeparator, instruction_address - frame->module->base_address()); } } else { // the printf before this prints a trailing separator for module name printf("%c%c%c%c0x%" PRIx64, kOutputSeparator, // empty function name kOutputSeparator, // empty source file kOutputSeparator, // empty source line kOutputSeparator, instruction_address); } printf("\n"); } } // ContainsModule checks whether a given |module| is in the vector // |modules_without_symbols|. static bool ContainsModule( const vector* modules, const CodeModule* module) { assert(modules); assert(module); vector::const_iterator iter; for (iter = modules->begin(); iter != modules->end(); ++iter) { if (module->debug_file().compare((*iter)->debug_file()) == 0 && module->debug_identifier().compare((*iter)->debug_identifier()) == 0) { return true; } } return false; } // PrintModule prints a single |module| to stdout. // |modules_without_symbols| should contain the list of modules that were // confirmed to be missing their symbols during the stack walk. static void PrintModule( const CodeModule* module, const vector* modules_without_symbols, const vector* modules_with_corrupt_symbols, uint64_t main_address) { string symbol_issues; if (ContainsModule(modules_without_symbols, module)) { symbol_issues = " (WARNING: No symbols, " + PathnameStripper::File(module->debug_file()) + ", " + module->debug_identifier() + ")"; } else if (ContainsModule(modules_with_corrupt_symbols, module)) { symbol_issues = " (WARNING: Corrupt symbols, " + PathnameStripper::File(module->debug_file()) + ", " + module->debug_identifier() + ")"; } uint64_t base_address = module->base_address(); printf("0x%08" PRIx64 " - 0x%08" PRIx64 " %s %s%s%s\n", base_address, base_address + module->size() - 1, PathnameStripper::File(module->code_file()).c_str(), module->version().empty() ? "???" : module->version().c_str(), main_address != 0 && base_address == main_address ? " (main)" : "", symbol_issues.c_str()); } // PrintModules prints the list of all loaded |modules| to stdout. // |modules_without_symbols| should contain the list of modules that were // confirmed to be missing their symbols during the stack walk. static void PrintModules( const CodeModules* modules, const vector* modules_without_symbols, const vector* modules_with_corrupt_symbols) { if (!modules) return; printf("\n"); printf("Loaded modules:\n"); uint64_t main_address = 0; const CodeModule* main_module = modules->GetMainModule(); if (main_module) { main_address = main_module->base_address(); } unsigned int module_count = modules->module_count(); for (unsigned int module_sequence = 0; module_sequence < module_count; ++module_sequence) { const CodeModule* module = modules->GetModuleAtSequence(module_sequence); PrintModule(module, modules_without_symbols, modules_with_corrupt_symbols, main_address); } } // PrintModulesMachineReadable outputs a list of loaded modules, // one per line, in the following machine-readable pipe-delimited // text format: // Module|{Module Filename}|{Version}|{Debug Filename}|{Debug Identifier}| // {Base Address}|{Max Address}|{Main} static void PrintModulesMachineReadable(const CodeModules* modules) { if (!modules) return; uint64_t main_address = 0; const CodeModule* main_module = modules->GetMainModule(); if (main_module) { main_address = main_module->base_address(); } unsigned int module_count = modules->module_count(); for (unsigned int module_sequence = 0; module_sequence < module_count; ++module_sequence) { const CodeModule* module = modules->GetModuleAtSequence(module_sequence); uint64_t base_address = module->base_address(); printf("Module%c%s%c%s%c%s%c%s%c0x%08" PRIx64 "%c0x%08" PRIx64 "%c%d\n", kOutputSeparator, StripSeparator(PathnameStripper::File(module->code_file())).c_str(), kOutputSeparator, StripSeparator(module->version()).c_str(), kOutputSeparator, StripSeparator(PathnameStripper::File(module->debug_file())).c_str(), kOutputSeparator, StripSeparator(module->debug_identifier()).c_str(), kOutputSeparator, base_address, kOutputSeparator, base_address + module->size() - 1, kOutputSeparator, main_module != NULL && base_address == main_address ? 1 : 0); } } } // namespace void PrintProcessState(const ProcessState& process_state, bool output_stack_contents, SourceLineResolverInterface* resolver) { // Print OS and CPU information. string cpu = process_state.system_info()->cpu; string cpu_info = process_state.system_info()->cpu_info; printf("Operating system: %s\n", process_state.system_info()->os.c_str()); printf(" %s\n", process_state.system_info()->os_version.c_str()); printf("CPU: %s\n", cpu.c_str()); if (!cpu_info.empty()) { // This field is optional. printf(" %s\n", cpu_info.c_str()); } printf(" %d CPU%s\n", process_state.system_info()->cpu_count, process_state.system_info()->cpu_count != 1 ? "s" : ""); printf("\n"); // Print GPU information string gl_version = process_state.system_info()->gl_version; string gl_vendor = process_state.system_info()->gl_vendor; string gl_renderer = process_state.system_info()->gl_renderer; printf("GPU:"); if (!gl_version.empty() || !gl_vendor.empty() || !gl_renderer.empty()) { printf(" %s\n", gl_version.c_str()); printf(" %s\n", gl_vendor.c_str()); printf(" %s\n", gl_renderer.c_str()); } else { printf(" UNKNOWN\n"); } printf("\n"); // Print crash information. if (process_state.crashed()) { printf("Crash reason: %s\n", process_state.crash_reason().c_str()); printf("Crash address: 0x%" PRIx64 "\n", process_state.crash_address()); } else { printf("No crash\n"); } string assertion = process_state.assertion(); if (!assertion.empty()) { printf("Assertion: %s\n", assertion.c_str()); } // Compute process uptime if the process creation and crash times are // available in the dump. if (process_state.time_date_stamp() != 0 && process_state.process_create_time() != 0 && process_state.time_date_stamp() >= process_state.process_create_time()) { printf("Process uptime: %d seconds\n", process_state.time_date_stamp() - process_state.process_create_time()); } else { printf("Process uptime: not available\n"); } // If the thread that requested the dump is known, print it first. int requesting_thread = process_state.requesting_thread(); if (requesting_thread != -1) { printf("\n"); printf("Thread %d (%s)\n", requesting_thread, process_state.crashed() ? "crashed" : "requested dump, did not crash"); PrintStack(process_state.threads()->at(requesting_thread), cpu, output_stack_contents, process_state.thread_memory_regions()->at(requesting_thread), process_state.modules(), resolver); } // Print all of the threads in the dump. int thread_count = process_state.threads()->size(); for (int thread_index = 0; thread_index < thread_count; ++thread_index) { if (thread_index != requesting_thread) { // Don't print the crash thread again, it was already printed. printf("\n"); printf("Thread %d\n", thread_index); PrintStack(process_state.threads()->at(thread_index), cpu, output_stack_contents, process_state.thread_memory_regions()->at(thread_index), process_state.modules(), resolver); } } PrintModules(process_state.modules(), process_state.modules_without_symbols(), process_state.modules_with_corrupt_symbols()); } void PrintProcessStateMachineReadable(const ProcessState& process_state) { // Print OS and CPU information. // OS|{OS Name}|{OS Version} // CPU|{CPU Name}|{CPU Info}|{Number of CPUs} // GPU|{GPU version}|{GPU vendor}|{GPU renderer} printf("OS%c%s%c%s\n", kOutputSeparator, StripSeparator(process_state.system_info()->os).c_str(), kOutputSeparator, StripSeparator(process_state.system_info()->os_version).c_str()); printf("CPU%c%s%c%s%c%d\n", kOutputSeparator, StripSeparator(process_state.system_info()->cpu).c_str(), kOutputSeparator, // this may be empty StripSeparator(process_state.system_info()->cpu_info).c_str(), kOutputSeparator, process_state.system_info()->cpu_count); printf("GPU%c%s%c%s%c%s\n", kOutputSeparator, StripSeparator(process_state.system_info()->gl_version).c_str(), kOutputSeparator, StripSeparator(process_state.system_info()->gl_vendor).c_str(), kOutputSeparator, StripSeparator(process_state.system_info()->gl_renderer).c_str()); int requesting_thread = process_state.requesting_thread(); // Print crash information. // Crash|{Crash Reason}|{Crash Address}|{Crashed Thread} printf("Crash%c", kOutputSeparator); if (process_state.crashed()) { printf("%s%c0x%" PRIx64 "%c", StripSeparator(process_state.crash_reason()).c_str(), kOutputSeparator, process_state.crash_address(), kOutputSeparator); } else { // print assertion info, if available, in place of crash reason, // instead of the unhelpful "No crash" string assertion = process_state.assertion(); if (!assertion.empty()) { printf("%s%c%c", StripSeparator(assertion).c_str(), kOutputSeparator, kOutputSeparator); } else { printf("No crash%c%c", kOutputSeparator, kOutputSeparator); } } if (requesting_thread != -1) { printf("%d\n", requesting_thread); } else { printf("\n"); } PrintModulesMachineReadable(process_state.modules()); // blank line to indicate start of threads printf("\n"); // If the thread that requested the dump is known, print it first. if (requesting_thread != -1) { PrintStackMachineReadable(requesting_thread, process_state.threads()->at(requesting_thread)); } // Print all of the threads in the dump. int thread_count = process_state.threads()->size(); for (int thread_index = 0; thread_index < thread_count; ++thread_index) { if (thread_index != requesting_thread) { // Don't print the crash thread again, it was already printed. PrintStackMachineReadable(thread_index, process_state.threads()->at(thread_index)); } } } } // namespace google_breakpad