b8b195a296
According to backtrace(3) man page, the string returned from backtrace_symbols() contains the return address so we shouldn't need to print it ourselves. Change-Id: Ia779207285c9ea0052b9aee3d84ee8380bf46d82
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/***************************************************************************
|
|
* __________ __ ___.
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
|
* \/ \/ \/ \/ \/
|
|
* $Id$
|
|
*
|
|
* Copyright (c) 2017 Amaury Pouly
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
****************************************************************************/
|
|
#include "config.h"
|
|
#include "system.h"
|
|
#include "lcd.h"
|
|
#include <execinfo.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
/* backtrace from the call-site of this function */
|
|
void rb_backtrace(int pc, int sp, unsigned *line)
|
|
{
|
|
/* ignore SP and PC */
|
|
(void) pc;
|
|
(void) sp;
|
|
|
|
/* backtrace */
|
|
#define BT_BUF_SIZE 100
|
|
void *buffer[BT_BUF_SIZE];
|
|
int count = backtrace(buffer, BT_BUF_SIZE);
|
|
/* print symbols to stdout for debug */
|
|
fprintf(stdout, "backtrace:\n");
|
|
fflush(stdout);
|
|
backtrace_symbols_fd(buffer, count, STDOUT_FILENO);
|
|
/* print on screen */
|
|
char **strings;
|
|
strings = backtrace_symbols(buffer, count);
|
|
if(strings == NULL)
|
|
{
|
|
perror("backtrace_symbols");
|
|
return;
|
|
}
|
|
|
|
for(int i = 0; i < count; i++)
|
|
{
|
|
lcd_putsf(0, (*line)++, " %s", strings[i]);
|
|
lcd_update();
|
|
}
|
|
|
|
free(strings);
|
|
}
|