FS#6357, patch 1: let iramcopy and bss share the same space in codecs and

plugins. Currently, in case of plugins using IRAM bss is cleared twice,
once in the loader, once in PLUGIN_IRAM_INIT. For codecs, bss is cleared only
during codec initialization. Also, removed double variables in codecs
storing a pointer to codec_api.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11606 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 46 insertions, 0 deletions

diff --git a/apps/codecs/codec_crt0.c b/apps/codecs/codec_crt0.c
new file mode 100644
index 0000000..96dc862
--- /dev/null
+++ b/apps/codecs/codec_crt0.c
@@ -0,0 +1,46 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2006 Tomasz Malesinski
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * 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;
+
+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);
+
+enum codec_status codec_start(struct codec_api *api)
+{
+#ifndef SIMULATOR
+#ifdef USE_IRAM
+    api->memcpy(iramstart, iramcopy, iramend - iramstart);
+    api->memset(iedata, 0, iend - iedata);
+#endif
+    api->memset(plugin_bss_start, 0, plugin_end_addr - plugin_bss_start);
+#endif
+    ci = api;
+    return codec_main();
+}