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breakpad/src/processor/stackwalk_common.cc
ted.mielczarek@gmail.com eb08c16300 Formatting tweak for https://breakpad.appspot.com/9774002, add more newlines 
git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1430 4c0a9323-5329-0410-9bdc-e9ce6186880e
2015-02-27 13:40:41 +00:00

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// 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 <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string>
#include <vector>
#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<ssize_t>(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<ssize_t>(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 std::string &indent,
const StackFrame *frame,
const StackFrame *prev_frame,
const std::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<const StackFrameX86*>(frame);
const StackFrameX86 *prev_frame_x86 =
static_cast<const StackFrameX86*>(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<const StackFrameAMD64*>(frame);
const StackFrameAMD64 *prev_frame_amd64 =
static_cast<const StackFrameAMD64*>(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<const StackFrameARM*>(frame);
const StackFrameARM *prev_frame_arm =
static_cast<const StackFrameARM*>(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<const StackFrameARM64*>(frame);
const StackFrameARM64 *prev_frame_arm64 =
static_cast<const StackFrameARM64*>(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<uint32_t>(address));
else
printf("\n%s %016" PRIx64, indent.c_str(), address);
// Print data in hex.
const int kBytesPerRow = 16;
std::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<uint32_t>(address),
static_cast<uint32_t>(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(" <no frames>\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<const StackFrameX86*>(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<const StackFramePPC*>(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<const StackFrameAMD64*>(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<const StackFrameSPARC*>(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<const StackFrameARM*>(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<const StackFrameARM64*>(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") {
const StackFrameMIPS* frame_mips =
reinterpret_cast<const StackFrameMIPS*>(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 std::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<const CodeModule*> *modules,
const CodeModule *module) {
assert(modules);
assert(module);
vector<const CodeModule*>::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<const CodeModule*> *modules_without_symbols,
const vector<const CodeModule*> *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<const CodeModule*> *modules_without_symbols,
const vector<const CodeModule*> *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 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}
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);
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
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