apps/codecs/codec_crt0.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2006 Tomasz Malesinski
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #include "config.h"
  23 #include "codeclib.h"
  24
  25 struct codec_api *ci DATA_ATTR;
  26
  27 extern unsigned char iramcopy[];
  28 extern unsigned char iramstart[];
  29 extern unsigned char iramend[];
  30 extern unsigned char iedata[];
  31 extern unsigned char iend[];
  32 extern unsigned char plugin_bss_start[];
  33 extern unsigned char plugin_end_addr[];
  34
  35 extern enum codec_status codec_main(void);
  36
  37 enum codec_status codec_start(void)
  38 {
  39 #ifndef SIMULATOR
  40 #ifdef USE_IRAM
  41     ci->memcpy(iramstart, iramcopy, iramend - iramstart);
  42     ci->memset(iedata, 0, iend - iedata);
  43 #endif
  44     ci->memset(plugin_bss_start, 0, plugin_end_addr - plugin_bss_start);
  45 #endif
  46 #if NUM_CORES > 1
  47     /* writeback cleared iedata and bss areas */
  48     ci->cpucache_flush();
  49 #endif
  50     return codec_main();
  51 }
  52
  53 #ifdef CPU_ARM
  54 void __attribute__((naked)) __div0(void)
  55 {
  56     asm volatile("bx %0" : : "r"(ci->__div0));
  57 }
  58 #endif