Add exit() implementation for plugins

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@20775 a1c6a512-1295-4272-9138-f99709370657

apps/plugins/lib/SOURCES

@@ -53,3 +53,16 @@ helper.c
 touchscreen.c
 #endif
 md5.c
+
+#ifndef SIMULATOR
+#ifdef CPU_ARM
+../../codecs/lib/setjmp_arm.S
+#endif
+#ifdef CPU_COLDFIRE
+../../codecs/lib/setjmp_cf.S
+#endif
+#ifdef CPU_MIPS
+../../codecs/lib/setjmp_mips.S
+#endif
+#endif
+pluginlib_exit.c

apps/plugins/lib/pluginlib_exit.c

@@ -0,0 +1,25 @@
+/***************************************************************************
+*             __________               __   ___.
+*   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+*   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+*   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+*   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+*                     \/            \/     \/    \/            \/
+* $Id$
+*
+* Copyright (C) 2009 by Maurus Cuelenaere
+*
+* 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 "pluginlib_exit.h"
+
+jmp_buf __exit_env;
+

apps/plugins/lib/pluginlib_exit.h

@@ -0,0 +1,47 @@
+/***************************************************************************
+*             __________               __   ___.
+*   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+*   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+*   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+*   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+*                     \/            \/     \/    \/            \/
+* $Id$
+*
+* Copyright (C) 2009 by Maurus Cuelenaere
+*
+* 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.
+*
+****************************************************************************/
+
+#ifndef __PLUGINLIB_EXIT_H__
+#define __PLUGINLIB_EXIT_H__
+
+#include "config.h"
+#ifndef SIMULATOR
+#include "../../codecs/lib/setjmp.h"
+#else
+#include <setjmp.h>
+#endif
+
+/* PLUGINLIB_EXIT_INIT needs to be placed as the first line in plugin_start */
+#define PLUGINLIB_EXIT_INIT switch(setjmp(__exit_env))   \
+                            {                            \
+                                case 1:                  \
+                                    return PLUGIN_OK;    \
+                                case 2:                  \
+                                    return PLUGIN_ERROR; \
+                                case 0:                  \
+                                default:                 \
+                                    break;               \
+                            }
+
+extern jmp_buf __exit_env;
+#define exit(status) longjmp(__exit_env, status != 0 ? 2 : 1)
+
+#endif /*  __PLUGINLIB_EXIT_H__ */