rockbox/apps/codecs/codec_crt0.c
Michael Sevakis b0befadad1 Include divide-by-zero handling within plugins and codecs for ARM processors.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19834 a1c6a512-1295-4272-9138-f99709370657
2009-01-24 03:47:09 +00:00

60 lines
1.8 KiB
C

/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2006 Tomasz Malesinski
*
* 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 "codeclib.h"
struct codec_api *ci __attribute__ ((section (".data")));
extern unsigned char iramcopy[];
extern unsigned char iramstart[];
extern unsigned char iramend[];
extern unsigned char iedata[];
extern unsigned char iend[];
extern unsigned char plugin_bss_start[];
extern unsigned char plugin_end_addr[];
extern enum codec_status codec_main(void);
CACHE_FUNCTION_WRAPPERS(ci);
enum codec_status codec_start(void)
{
#ifndef SIMULATOR
#ifdef USE_IRAM
ci->memcpy(iramstart, iramcopy, iramend - iramstart);
ci->memset(iedata, 0, iend - iedata);
#endif
ci->memset(plugin_bss_start, 0, plugin_end_addr - plugin_bss_start);
#endif
#if NUM_CORES > 1
/* writeback cleared iedata and bss areas */
flush_icache();
#endif
return codec_main();
}
#ifdef CPU_ARM
void __attribute__((naked)) __div0(void)
{
asm volatile("bx %0" : : "r"(ci->__div0));
}
#endif