FS#10911 - Plugins: Fractals (formerly Mandelbrot)

- Rename the mandelbrot plugin to fractals
- Update manual accordingly
- Separate plugin's functionality into separate files
- Lay the ground for having fractals sets other than the Mandelbrot set.
  For that the following will need to be implemented:
  - Create a new file for the new fracral set
  - Provide key mapping to switch between sets


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@24230 a1c6a512-1295-4272-9138-f99709370657

apps/plugins/fractals/cpu_coldfire.c

@@ -0,0 +1,58 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2009 Tomer Shalev
+ *
+ *
+ * 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 "cpu_coldfire.h"
+
+inline short muls16_asr10(short a, short b)
+{
+    asm (
+        "muls.w  %[a],%[b]   \n"
+        "asr.l   #8,%[b]     \n"
+        "asr.l   #2,%[b]     \n"
+        : /* outputs */
+        [b]"+d"(b)
+        : /* inputs */
+        [a]"d" (a)
+    );
+    return b;
+}
+
+inline long muls32_asr26(long a, long b)
+{
+    long r, t1;
+    asm (
+        "mac.l   %[a], %[b], %%acc0  \n" /* multiply */
+        "move.l  %%accext01, %[t1]   \n" /* get low part */
+        "movclr.l %%acc0, %[r]       \n" /* get high part */
+        "asl.l   #5, %[r]            \n" /* hi <<= 5, plus one free */
+        "lsr.l   #3, %[t1]           \n" /* lo >>= 3 */
+        "and.l   #0x1f, %[t1]        \n" /* mask out unrelated bits */
+        "or.l    %[t1], %[r]         \n" /* combine result */
+        : /* outputs */
+        [r] "=d"(r),
+        [t1]"=d"(t1)
+        : /* inputs */
+        [a] "d" (a),
+        [b] "d" (b)
+    );
+    return r;
+}
+