From 99aed7c8fc9db68a18816a98b84bf0c09a00cf1e Mon Sep 17 00:00:00 2001 From: Luca Barbato Date: Tue, 19 Sep 2006 22:22:29 +0000 Subject: New single instruction math operation header Originally committed as revision 6291 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/ppc/mathops.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 libavcodec/ppc/mathops.h (limited to 'libavcodec/ppc/mathops.h') diff --git a/libavcodec/ppc/mathops.h b/libavcodec/ppc/mathops.h new file mode 100644 index 0000000000..acb0dbfbf2 --- /dev/null +++ b/libavcodec/ppc/mathops.h @@ -0,0 +1,31 @@ +/* + * simple math operations + * Copyright (c) 2001, 2002 Fabrice Bellard. + * Copyright (c) 2006 Michael Niedermayer et al + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#if defined(ARCH_POWERPC_405) +/* signed 16x16 -> 32 multiply add accumulate */ +# define MAC16(rt, ra, rb) \ + asm ("maclhw %0, %2, %3" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb)); + +/* signed 16x16 -> 32 multiply */ +# define MUL16(ra, rb) \ + ({ int __rt; + asm ("mullhw %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb)); + __rt; }) +#endif -- cgit v1.2.3