apps/plugins/fractals/cpu_coldfire.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2009 Tomer Shalev
  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 #ifndef _CPU_COLDFIRE_H
  23 #define _CPU_COLDFIRE_H
  24
  25 inline static short muls16_asr10(short a, short b)
  26 {
  27     asm (
  28         "muls.w  %[a],%[b]   \n"
  29         "asr.l   #8,%[b]     \n"
  30         "asr.l   #2,%[b]     \n"
  31         : /* outputs */
  32         [b]"+d"(b)
  33         : /* inputs */
  34         [a]"d" (a)
  35     );
  36     return b;
  37 }
  38
  39 inline static long muls32_asr26(long a, long b)
  40 {
  41     long r, t1;
  42     asm (
  43         "mac.l   %[a], %[b], %%acc0  \n" /* multiply */
  44         "move.l  %%accext01, %[t1]   \n" /* get low part */
  45         "movclr.l %%acc0, %[r]       \n" /* get high part */
  46         "asl.l   #5, %[r]            \n" /* hi <<= 5, plus one free */
  47         "lsr.l   #3, %[t1]           \n" /* lo >>= 3 */
  48         "and.l   #0x1f, %[t1]        \n" /* mask out unrelated bits */
  49         "or.l    %[t1], %[r]         \n" /* combine result */
  50         : /* outputs */
  51         [r] "=d"(r),
  52         [t1]"=d"(t1)
  53         : /* inputs */
  54         [a] "d" (a),
  55         [b] "d" (b)
  56     );
  57     return r;
  58 }
  59
  60 #endif