diff options
Diffstat (limited to 'lib/igt_core.c')
| -rw-r--r-- | lib/igt_core.c | 50 |
1 files changed, 45 insertions, 5 deletions
diff --git a/lib/igt_core.c b/lib/igt_core.c index c52c0818..23bb858f 100644 --- a/lib/igt_core.c +++ b/lib/igt_core.c @@ -73,6 +73,7 @@ #define UNW_LOCAL_ONLY #include <libunwind.h> +#include <elfutils/libdwfl.h> #ifdef HAVE_LIBGEN_H #include <libgen.h> /* for basename() on Solaris */ @@ -1212,20 +1213,59 @@ static void print_backtrace(void) unw_context_t uc; int stack_num = 0; + Dwfl_Callbacks cbs = { + .find_elf = dwfl_linux_proc_find_elf, + .find_debuginfo = dwfl_standard_find_debuginfo, + }; + + Dwfl *dwfl = dwfl_begin(&cbs); + + if (dwfl_linux_proc_report(dwfl, getpid())) { + dwfl_end(dwfl); + dwfl = NULL; + } else + dwfl_report_end(dwfl, NULL, NULL); + igt_info("Stack trace:\n"); unw_getcontext(&uc); unw_init_local(&cursor, &uc); while (unw_step(&cursor) > 0) { char name[255]; - unw_word_t off; + unw_word_t off, ip; + Dwfl_Module *mod = NULL; - if (unw_get_proc_name(&cursor, name, 255, &off) < 0) - strcpy(name, "<unknown>"); + unw_get_reg(&cursor, UNW_REG_IP, &ip); + + if (dwfl) + mod = dwfl_addrmodule(dwfl, ip); - igt_info(" #%d [%s+0x%x]\n", stack_num++, name, - (unsigned int) off); + if (mod) { + const char *src, *dwfl_name; + Dwfl_Line *line; + int lineno; + GElf_Sym sym; + + line = dwfl_module_getsrc(mod, ip); + dwfl_name = dwfl_module_addrsym(mod, ip, &sym, NULL); + + if (line && dwfl_name) { + src = dwfl_lineinfo(line, NULL, &lineno, NULL, NULL, NULL); + igt_info(" #%d %s:%d %s()\n", stack_num++, src, lineno, dwfl_name); + continue; + } + } + + if (unw_get_proc_name(&cursor, name, 255, &off) < 0) + igt_info(" #%d [<unknown>+0x%x]\n", stack_num++, + (unsigned int) ip); + else + igt_info(" #%d [%s+0x%x]\n", stack_num++, name, + (unsigned int) off); } + + if (dwfl) + dwfl_end(dwfl); } static const char hex[] = "0123456789abcdef"; |