void get_backtrace_symbols(const backtrace_frame_t* backtrace, size_t frames,
backtrace_symbol_t* backtrace_symbols) {
map_info_t* milist = acquire_my_map_info_list();
for (size_t i = 0; i < frames; i++) {
const backtrace_frame_t* frame = &backtrace[i];
backtrace_symbol_t* symbol = &backtrace_symbols[i];
init_backtrace_symbol(symbol, frame->absolute_pc);
const map_info_t* mi = find_map_info(milist, frame->absolute_pc);
if (mi) {
symbol->relative_pc = frame->absolute_pc - mi->start;
if (mi->name[0]) {
symbol->map_name = strdup(mi->name);
}
Dl_info info;
if (dladdr((const void*)frame->absolute_pc, &info) && info.dli_sname) {
symbol->relative_symbol_addr = (uintptr_t)info.dli_saddr
- (uintptr_t)info.dli_fbase;
symbol->symbol_name = strdup(info.dli_sname);
symbol->demangled_name = demangle_symbol_name(symbol->symbol_name);
}
}
}
release_my_map_info_list(milist);
}
char* local_get_proc_name(const backtrace_t* backtrace, uintptr_t pc,
uintptr_t* offset) {
unw_context_t* context = (unw_context_t*)backtrace->private_data;
char buf[512];
*offset = 0;
unw_word_t value;
if (unw_get_proc_name_by_ip(unw_local_addr_space, pc, buf, sizeof(buf),
&value, context) >= 0 && buf[0] != '\0') {
*offset = (uintptr_t)value;
char* symbol = demangle_symbol_name(buf);
if (!symbol) {
symbol = strdup(buf);
}
return symbol;
}
return NULL;
}
void get_backtrace_symbols_ptrace(const ptrace_context_t* context,
const backtrace_frame_t* backtrace, size_t frames,
backtrace_symbol_t* backtrace_symbols) {
for (size_t i = 0; i < frames; i++) {
const backtrace_frame_t* frame = &backtrace[i];
backtrace_symbol_t* symbol = &backtrace_symbols[i];
init_backtrace_symbol(symbol, frame->absolute_pc);
const map_info_t* mi;
const symbol_t* s;
find_symbol_ptrace(context, frame->absolute_pc, &mi, &s);
if (mi) {
symbol->relative_pc = frame->absolute_pc - mi->start;
if (mi->name[0]) {
symbol->map_name = strdup(mi->name);
}
}
if (s) {
symbol->relative_symbol_addr = s->start;
symbol->symbol_name = strdup(s->name);
symbol->demangled_name = demangle_symbol_name(symbol->symbol_name);
}
}
}
