__LIBC_HIDDEN__ void log_backtrace(uintptr_t* frames, size_t frame_count) {
uintptr_t self_bt[16];
if (frames == NULL) {
frame_count = get_backtrace(self_bt, 16);
frames = self_bt;
}
__libc_format_log(ANDROID_LOG_ERROR, "libc",
"*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n");
for (size_t i = 0 ; i < frame_count; ++i) {
uintptr_t offset = 0;
const char* symbol = NULL;
Dl_info info;
if (dladdr((void*) frames[i], &info) != 0) {
offset = reinterpret_cast<uintptr_t>(info.dli_saddr);
symbol = info.dli_sname;
}
uintptr_t rel_pc;
const mapinfo_t* mi = (gMapInfo != NULL) ? mapinfo_find(gMapInfo, frames[i], &rel_pc) : NULL;
const char* soname = (mi != NULL) ? mi->name : info.dli_fname;
if (soname == NULL) {
soname = "<unknown>";
}
if (symbol != NULL) {
// TODO: we might need a flag to say whether it's safe to allocate (demangling allocates).
char* demangled_symbol = demangle(symbol);
const char* best_name = (demangled_symbol != NULL) ? demangled_symbol : symbol;
__libc_format_log(ANDROID_LOG_ERROR, "libc",
" #%02zd pc %0*" PRIxPTR " %s (%s+%" PRIuPTR ")",
i,
static_cast<int>(2 * sizeof(void*)), rel_pc,
soname,
best_name, frames[i] - offset);
free(demangled_symbol);
} else {
__libc_format_log(ANDROID_LOG_ERROR, "libc",
" #%02zd pc %0*" PRIxPTR " %s",
i,
static_cast<int>(2 * sizeof(void*)), rel_pc,
soname);
}
}
}
__LIBC_HIDDEN__ void log_backtrace(uintptr_t* frames, size_t frame_count) {
ScopedDisableDebugCalls disable;
uintptr_t self_bt[16];
if (frames == NULL) {
frame_count = get_backtrace(self_bt, 16);
frames = self_bt;
}
__libc_format_log(ANDROID_LOG_ERROR, "libc",
"*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***\n");
for (size_t i = 0 ; i < frame_count; ++i) {
uintptr_t offset = 0;
const char* symbol = NULL;
Dl_info info;
if (dladdr((void*) frames[i], &info) != 0) {
offset = reinterpret_cast<uintptr_t>(info.dli_saddr);
symbol = info.dli_sname;
}
uintptr_t rel_pc = offset;
const mapinfo_t* mi = (g_map_info != NULL) ? mapinfo_find(g_map_info, frames[i], &rel_pc) : NULL;
const char* soname = (mi != NULL) ? mi->name : info.dli_fname;
if (soname == NULL) {
soname = "<unknown>";
}
if (symbol != NULL) {
char* demangled_symbol = __cxa_demangle(symbol, NULL, NULL, NULL);
const char* best_name = (demangled_symbol != NULL) ? demangled_symbol : symbol;
__libc_format_log(ANDROID_LOG_ERROR, "libc",
" #%02zd pc %" PAD_PTR " %s (%s+%" PRIuPTR ")",
i, rel_pc, soname, best_name, frames[i] - offset);
free(demangled_symbol);
} else {
__libc_format_log(ANDROID_LOG_ERROR, "libc",
" #%02zd pc %" PAD_PTR " %s",
i, rel_pc, soname);
}
}
}
