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

2 files changed, 34 insertions, 0 deletions

diff --git a/apps/plugins/lib/SOURCES b/apps/plugins/lib/SOURCES
index bb7da12e8b..c90613623c 100644
--- a/apps/plugins/lib/SOURCES
+++ b/apps/plugins/lib/SOURCES
@@ -1,3 +1,7 @@
+#ifdef CPU_ARM
+/* For now, only ARM uses this for __div0 */
+gcc-support.c
+#endif
 oldmenuapi.c
 configfile.c
 fixedpoint.c
diff --git a/apps/plugins/lib/gcc-support.c b/apps/plugins/lib/gcc-support.c
new file mode 100644
index 0000000000..91744d7fbc
--- /dev/null
+++ b/apps/plugins/lib/gcc-support.c
@@ -0,0 +1,30 @@
+/***************************************************************************
+*             __________               __   ___.
+*   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+*   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+*   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+*   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+*                     \/            \/     \/    \/            \/
+* $Id$
+*
+* Copyright (C) 2009 by Michael Sevakis
+*
+* Miscellaneous compiler support routines.
+*
+* 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 "plugin.h"
+
+#ifdef CPU_ARM
+void __attribute__((naked)) __div0(void)
+{
+    asm volatile("bx %0" : : "r"(rb->__div0));
+}
+#endif