libavcodec/ppc/mathops.h

   1 /*
   2  * simple math operations
   3  * Copyright (c) 2001, 2002 Fabrice Bellard.
   4  * Copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> et al
   5  *
   6  * This file is part of FFmpeg.
   7  *
   8  * FFmpeg is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * FFmpeg is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with FFmpeg; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 #ifndef FFMPEG_PPC_MATHOPS_H
  24 #define FFMPEG_PPC_MATHOPS_H
  25
  26 #if defined(ARCH_POWERPC_405)
  27 /* signed 16x16 -> 32 multiply add accumulate */
  28 #   define MAC16(rt, ra, rb) \
  29         asm ("maclhw %0, %2, %3" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
  30
  31 /* signed 16x16 -> 32 multiply */
  32 #   define MUL16(ra, rb) \
  33         ({ int __rt; \
  34          asm ("mullhw %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb)); \
  35          __rt; })
  36 #endif
  37
  38 #endif /* FFMPEG_PPC_MATHOPS_H */