diff options
Diffstat (limited to 'platform/linuxbsd/crash_handler_linuxbsd.cpp')
| -rw-r--r-- | platform/linuxbsd/crash_handler_linuxbsd.cpp | 46 |
1 files changed, 28 insertions, 18 deletions
diff --git a/platform/linuxbsd/crash_handler_linuxbsd.cpp b/platform/linuxbsd/crash_handler_linuxbsd.cpp index add69c436f..3a245460b4 100644 --- a/platform/linuxbsd/crash_handler_linuxbsd.cpp +++ b/platform/linuxbsd/crash_handler_linuxbsd.cpp @@ -44,6 +44,7 @@ #include <cxxabi.h> #include <dlfcn.h> #include <execinfo.h> +#include <link.h> #include <signal.h> #include <stdlib.h> @@ -79,7 +80,33 @@ static void handle_crash(int sig) { } print_error(vformat("Dumping the backtrace. %s", msg)); char **strings = backtrace_symbols(bt_buffer, size); + // PIE executable relocation, zero for non-PIE executables +#ifdef __GLIBC__ + // This is a glibc only thing apparently. + uintptr_t relocation = _r_debug.r_map->l_addr; +#else + // Non glibc systems apparently don't give PIE relocation info. + uintptr_t relocation = 0; +#endif //__GLIBC__ if (strings) { + List<String> args; + for (size_t i = 0; i < size; i++) { + char str[1024]; + snprintf(str, 1024, "%p", (void *)((uintptr_t)bt_buffer[i] - relocation)); + args.push_back(str); + } + args.push_back("-e"); + args.push_back(_execpath); + + // Try to get the file/line number using addr2line + int ret; + String output = ""; + Error err = OS::get_singleton()->execute(String("addr2line"), args, &output, &ret); + Vector<String> addr2line_results; + if (err == OK) { + addr2line_results = output.substr(0, output.length() - 1).split("\n", false); + } + for (size_t i = 1; i < size; i++) { char fname[1024]; Dl_info info; @@ -102,24 +129,7 @@ static void handle_crash(int sig) { } } - List<String> args; - - char str[1024]; - snprintf(str, 1024, "%p", bt_buffer[i]); - args.push_back(str); - args.push_back("-e"); - args.push_back(_execpath); - - String output = ""; - - // Try to get the file/line number using addr2line - int ret; - Error err = OS::get_singleton()->execute(String("addr2line"), args, &output, &ret); - if (err == OK) { - output = output.substr(0, output.length() - 1); - } - - print_error(vformat("[%d] %s (%s)", (int64_t)i, fname, output)); + print_error(vformat("[%d] %s (%s)", (int64_t)i, fname, err == OK ? addr2line_results[i] : "")); } free(strings); |