ec40f4e681fd4f4b72153c4c4f7846d0c956486a
[libav.git] / libavcodec / bfin / mathops.h
1 /*
2 * mathops.h
3 *
4 * Copyright (C) 2007 Marc Hoffman <mmhoffm@gmail.com>
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 #ifndef FFMPEG_BFIN_MATHOPS_H
23 #define FFMPEG_BFIN_MATHOPS_H
24
25 #ifdef CONFIG_MPEGAUDIO_HP
26 #define MULH(X,Y) ({ int xxo; \
27 asm ( \
28 "a1 = %2.L * %1.L (FU);\n\t" \
29 "a1 = a1 >> 16;\n\t" \
30 "a1 += %2.H * %1.L (IS,M);\n\t" \
31 "a0 = %1.H * %2.H, a1+= %1.H * %2.L (IS,M);\n\t"\
32 "a1 = a1 >>> 16;\n\t" \
33 "%0 = (a0 += a1);\n\t" \
34 : "=d" (xxo) : "d" (X), "d" (Y) : "A0","A1"); xxo; })
35 #else
36 #define MULH(X,Y) ({ int xxo; \
37 asm ( \
38 "a1 = %2.H * %1.L (IS,M);\n\t" \
39 "a0 = %1.H * %2.H, a1+= %1.H * %2.L (IS,M);\n\t"\
40 "a1 = a1 >>> 16;\n\t" \
41 "%0 = (a0 += a1);\n\t" \
42 : "=d" (xxo) : "d" (X), "d" (Y) : "A0","A1"); xxo; })
43 #endif
44
45 /* signed 16x16 -> 32 multiply */
46 #define MUL16(a, b) ({ int xxo; \
47 asm ( \
48 "%0 = %1.l*%2.l (is);\n\t" \
49 : "=W" (xxo) : "d" (a), "d" (b) : "A1"); \
50 xxo; })
51
52 #endif /* FFMPEG_BFIN_MATHOPS_H */