diff options
Diffstat (limited to 'platform/osx/crash_handler_osx.mm')
| -rw-r--r-- | platform/osx/crash_handler_osx.mm | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/platform/osx/crash_handler_osx.mm b/platform/osx/crash_handler_osx.mm new file mode 100644 index 0000000000..9239573734 --- /dev/null +++ b/platform/osx/crash_handler_osx.mm @@ -0,0 +1,178 @@ +/*************************************************************************/ +/* crash_handler_osx.mm */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* https://godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */ +/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ +#include "main/main.h" +#include "os_osx.h" + +#include <string.h> +#include <unistd.h> + +// Note: Dump backtrace in 32bit mode is getting a bus error on the fgets by the ->execute, so enable only on 64bit +#if defined(DEBUG_ENABLED) && defined(__x86_64__) +#define CRASH_HANDLER_ENABLED 1 +#endif + +#ifdef CRASH_HANDLER_ENABLED +#include <cxxabi.h> +#include <dlfcn.h> +#include <execinfo.h> +#include <signal.h> + +#include <mach-o/dyld.h> +#include <mach-o/getsect.h> + +#ifdef __x86_64__ +static uint64_t load_address() { + const struct segment_command_64 *cmd = getsegbyname("__TEXT"); +#else +static uint32_t load_address() { + const struct segment_command *cmd = getsegbyname("__TEXT"); +#endif + char full_path[1024]; + uint32_t size = sizeof(full_path); + + if (cmd && !_NSGetExecutablePath(full_path, &size)) { + uint32_t dyld_count = _dyld_image_count(); + for (uint32_t i = 0; i < dyld_count; i++) { + const char *image_name = _dyld_get_image_name(i); + if (image_name && strncmp(image_name, full_path, 1024) == 0) { + return cmd->vmaddr + _dyld_get_image_vmaddr_slide(i); + } + } + } + + return 0; +} + +static void handle_crash(int sig) { + if (OS::get_singleton() == NULL) + return; + + void *bt_buffer[256]; + size_t size = backtrace(bt_buffer, 256); + String _execpath = OS::get_singleton()->get_executable_path(); + String msg = GLOBAL_GET("debug/settings/backtrace/message"); + + // Dump the backtrace to stderr with a message to the user + fprintf(stderr, "%s: Program crashed with signal %d\n", __FUNCTION__, sig); + fprintf(stderr, "Dumping the backtrace. %ls\n", msg.c_str()); + char **strings = backtrace_symbols(bt_buffer, size); + if (strings) { + void *load_addr = (void *)load_address(); + + for (int i = 1; i < size; i++) { + char fname[1024]; + Dl_info info; + + snprintf(fname, 1024, "%s", strings[i]); + + // Try to demangle the function name to provide a more readable one + if (dladdr(bt_buffer[i], &info) && info.dli_sname) { + if (info.dli_sname[0] == '_') { + int status; + char *demangled = abi::__cxa_demangle(info.dli_sname, NULL, 0, &status); + + if (status == 0 && demangled) { + snprintf(fname, 1024, "%s", demangled); + } + + if (demangled) + free(demangled); + } + } + + String output = fname; + + // Try to get the file/line number using atos + if (bt_buffer[i] > (void *)0x0 && OS::get_singleton()) { + List<String> args; + char str[1024]; + + args.push_back("-o"); + args.push_back(_execpath); + args.push_back("-arch"); +#ifdef __x86_64__ + args.push_back("x86_64"); +#else + args.push_back("i386"); +#endif + args.push_back("-l"); + snprintf(str, 1024, "%p", load_addr); + args.push_back(str); + snprintf(str, 1024, "%p", bt_buffer[i]); + args.push_back(str); + + int ret; + String out = ""; + Error err = OS::get_singleton()->execute(String("atos"), args, true, NULL, &out, &ret); + if (err == OK && out.substr(0, 2) != "0x") { + out.erase(out.length() - 1, 1); + output = out; + } + } + + fprintf(stderr, "[%d] %ls\n", i, output.c_str()); + } + + free(strings); + } + fprintf(stderr, "-- END OF BACKTRACE --\n"); + + // Abort to pass the error to the OS + abort(); +} +#endif + +CrashHandler::CrashHandler() { + disabled = false; +} + +CrashHandler::~CrashHandler() { +} + +void CrashHandler::disable() { + if (disabled) + return; + +#ifdef CRASH_HANDLER_ENABLED + signal(SIGSEGV, NULL); + signal(SIGFPE, NULL); + signal(SIGILL, NULL); +#endif + + disabled = true; +} + +void CrashHandler::initialize() { +#ifdef CRASH_HANDLER_ENABLED + signal(SIGSEGV, handle_crash); + signal(SIGFPE, handle_crash); + signal(SIGILL, handle_crash); +#endif +} |