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| author | Marc Hoffman <mmhoffm@gmail.com> | 2007-08-30 15:15:48 +0000 |
|---|---|---|
| committer | Marc Hoffman <mmhoffm@gmail.com> | 2007-08-30 15:15:48 +0000 |
| commit | 543a90d14ae9c4e96ce33491f2d262bfaca6dc21 (patch) | |
| tree | 3b9ca12e227c4944a21a76b5785d56f04cb1c286 /libavcodec | |
| parent | eafa1c90e573c14562987390d1001d4e636d5a74 (diff) | |
Blackfin 32bit multiplication primitives MULH MUL16
Originally committed as revision 10262 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/bfin/mathops.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/libavcodec/bfin/mathops.h b/libavcodec/bfin/mathops.h new file mode 100644 index 0000000000..eab4446caf --- /dev/null +++ b/libavcodec/bfin/mathops.h @@ -0,0 +1,52 @@ +/* + * mathops.h + * + * Copyright (C) 2007 Marc Hoffman <mmhoffm@gmail.com> + * + * This file is part of FFmpeg. + * + * FFmpeg 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 2.1 of the License, or (at your option) any later version. + * + * FFmpeg 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 FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ +#ifndef MATHOPS_BFIN +#define MATHOPS_BFIN + +#ifdef CONFIG_MPEGAUDIO_HP +#define MULH(X,Y) ({ int xxo; \ + asm ( \ + "a1 = %2.L * %1.L (FU);\n\t" \ + "a1 = a1 >> 16;\n\t" \ + "a1 += %2.H * %1.L (IS,M);\n\t" \ + "a0 = %1.H * %2.H, a1+= %1.H * %2.L (IS,M);\n\t"\ + "a1 = a1 >>> 16;\n\t" \ + "%0 = (a0 += a1);\n\t" \ + : "=d" (xxo) : "d" (X), "d" (Y)); xxo; }) +#else +#define MULH(X,Y) ({ int xxo; \ + asm ( \ + "a1 = %2.H * %1.L (IS,M);\n\t" \ + "a0 = %1.H * %2.H, a1+= %1.H * %2.L (IS,M);\n\t"\ + "a1 = a1 >>> 16;\n\t" \ + "%0 = (a0 += a1);\n\t" \ + : "=d" (xxo) : "d" (X), "d" (Y)); xxo; }) +#endif + +/* signed 16x16 -> 32 multiply */ +#define MUL16(a, b) ({ int xxo; \ + asm ( \ + "%0 = %1.l*%2.l (is);\n\t" \ + : "=W" (xxo) : "d" (a), "d" (b)); \ + xxo; }) + +#endif |