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#include "dat.h"
#include "fns.h"
//#include <lib9.h>
#include <stdio.h>
#include <time.h>
#include <unwind.h>
#include <dlfcn.h>
#ifdef ANDROID
#include <android/log.h>
#define LOG_TAG "inferno CT"
#define LOGI(...) __android_log_print(ANDROID_LOG_INFO,LOG_TAG,__VA_ARGS__)
#define LOGW(...) __android_log_print(ANDROID_LOG_WARN,LOG_TAG,__VA_ARGS__)
#define LOGE(...) __android_log_print(ANDROID_LOG_ERROR,LOG_TAG,__VA_ARGS__)
#else
#define LOGI(...) printf(__VA_ARGS__)
#define LOGW(...)
#define LOGE(...)
#endif
//static FILE *fp_trace;
typedef struct BacktraceState
{
void** current;
void** end;
} BacktraceState;
typedef struct
{
uintptr_t r[16];
} core_regs;
typedef struct
{
uintptr_t demand_save_flags;
core_regs core;
} phase2_vrs;
extern char calltracelog_path[];
extern ucontext_t *sig_ctx;
extern _Unwind_Reason_Code __gnu_Unwind_Backtrace(_Unwind_Trace_Fn trace, void * trace_argument, phase2_vrs * entry_vrs);
static _Unwind_Reason_Code unwindCallback(struct _Unwind_Context* context, void* arg)
{
BacktraceState* state = (BacktraceState*)(arg);
uintptr_t pc = _Unwind_GetIP(context);
if (pc) {
if (state->current == state->end) {
return _URC_END_OF_STACK;
} else {
*state->current++ = (void*)(pc);
}
}
return _URC_NO_REASON;
}
char** dumpBacktrace(void** buffer, size_t count)
{
size_t idx;
int len;
char **sym_buf = (char**)malloc( count * sizeof(char**) );
for (idx = 0; idx < count; ++idx) {
const void* addr = buffer[idx];
const char* symbol = "";
char *sym_rslt;
Dl_info info;
if (dladdr(addr, &info) && info.dli_sname) {
symbol = info.dli_sname;
}
len = strlen(symbol) + 1 + 25;
sym_rslt = malloc(len);
snprint(sym_rslt, len-1, "# %d: %#p %s", idx-2, addr, symbol);
sym_buf[idx] = sym_rslt;
}
return sym_buf;
}
size_t captureBacktrace(void** buffer, size_t max, void *arg)
{
BacktraceState state = {buffer, buffer + max};
if(arg != nil){
ucontext_t* signal_context = (ucontext_t*) arg;
phase2_vrs pre_signal_state = {};
// pre_signal_state.demand_save_flags = 0;
pre_signal_state.core = *(const core_regs*)(&(signal_context->uc_mcontext.arm_r0));
__gnu_Unwind_Backtrace(unwindCallback, &state, &pre_signal_state);
}else{
_Unwind_Backtrace(unwindCallback, &state);
}
return state.current - buffer;
}
void do_backtrace(char *err_str)
{
size_t i, max = 30;
void* buffer[max];
char **sym_buf;
FILE *f = fopen(calltracelog_path, "a");
max = captureBacktrace(buffer, max, sig_ctx );
sym_buf = dumpBacktrace(buffer, max);
sig_ctx = nil;
if(f != nil ){
fprintf(f, "\n%s\n-----\n", err_str ? err_str : "ERROR: ??");
for(i=2; i<max; i++){
if(sym_buf[i])
fprintf(f, "%s\n", sym_buf[i]);
}
fflush(f);
fclose(f);
}
for(i=0; i<max; i++){
if(sym_buf[i]){
// LOGE("%s", sym_buf[i]);
free(sym_buf[i]);
}
}
free(sym_buf);
}
#if 0
#include <execinfo.h>
void **backtrace_buf[32];
void do_backtrace(){
int i, cnt = backtrace(backtrace_buf, 30);
char **symbs;
int f = open("/sdcard/Inferno/backtrace.txt", O_WRONLY);
if(f){
backtrace_symbols_fd(backtrace_buf, cnt, f);
close(f);
}
symbs = backtrace_symbols(backtrace_buf, cnt);
for(i=0; i<cnt; i++){
LOGE("%s", symbs[i]);
}
free(symbs);
}
#endif
/*
void
__attribute__ ((constructor))
trace_begin (void)
{
//LOGI("trace_begin");
// fp_trace = fopen("/sdcard/Inferno/trace.out", "w");
}
*/
/*
void
__attribute__ ((destructor))
trace_end (void)
{
LOGI("trace_end");
// if(fp_trace != NULL) {
// fclose(fp_trace);
// }
}
*/
void
__cyg_profile_func_enter (void *func, void *caller)
{
//LOGI("trace_foo_ent %p, %p", func, caller);
// if(fp_trace != NULL) {
// fprintf(fp_trace, "e %p %p %lu\n", func, caller, time(NULL) );
// }
}
void
__cyg_profile_func_exit (void *func, void *caller)
{
//LOGI("trace_foo_exit %p, %p", func, caller);
// if(fp_trace != NULL) {
// fprintf(fp_trace, "x %p %p %lu\n", func, caller, time(NULL));
// }
}
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