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/***************************************************************************
* __________ __ ___.
* 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 "codecs.h"
struct codec_api *ci DATA_ATTR;
extern unsigned char plugin_bss_start[];
extern unsigned char plugin_end_addr[];
extern enum codec_status codec_main(void);
/* stub, the entry point is called via its reference in __header to
* avoid warning with certain compilers */
int _start(void) {return 0;}
enum codec_status codec_start(void)
{
#if (CONFIG_PLATFORM & PLATFORM_NATIVE)
#ifdef USE_IRAM
extern char iramcopy[], iramstart[], iramend[], iedata[], iend[];
size_t iram_size = iramend - iramstart;
size_t ibss_size = iend - iedata;
if (iram_size > 0 || ibss_size > 0)
{
ci->memcpy(iramstart, iramcopy, iram_size);
ci->memset(iedata, 0, ibss_size);
/* make the icache (if it exists) up to date with the new code */
ci->cpucache_invalidate();
/* barrier to prevent reordering iram copy and BSS clearing,
* because the BSS segment alias the IRAM copy.
*/
asm volatile ("" ::: "memory");
}
#endif /* PLUGIN_USE_IRAM */
ci->memset(plugin_bss_start, 0, plugin_end_addr - plugin_bss_start);
/* Some parts of bss may be used via a no-cache alias (at least
* portalplayer has this). If we don't clear the cache, those aliases
* may read garbage */
ci->cpucache_invalidate();
#endif
return codec_main();
}
#if defined(CPU_ARM) && (CONFIG_PLATFORM & PLATFORM_NATIVE)
void __attribute__((naked)) __div0(void)
{
asm volatile("bx %0" : : "r"(ci->__div0));
}
#endif
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