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 AVCODEC_PPC_MATHOPS_H
24 #define AVCODEC_PPC_MATHOPS_H
25
26 #include <stdint.h>
27 #include "config.h"
28 #include "libavutil/common.h"
29
30 #if HAVE_PPC4XX
31 /* signed 16x16 -> 32 multiply add accumulate */
32 #define MAC16(rt, ra, rb) \
33 __asm__ ("maclhw %0, %2, %3" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
34
35 /* signed 16x16 -> 32 multiply */
36 #define MUL16(ra, rb) \
37 ({ int __rt; \
38 __asm__ ("mullhw %0, %1, %2" : "=r" (__rt) : "r" (ra), "r" (rb)); \
39 __rt; })
40 #endif
41
42 #define MULH MULH
MULH(int a,int b)43 static inline av_const int MULH(int a, int b){
44 int r;
45 __asm__ ("mulhw %0, %1, %2" : "=r"(r) : "r"(a), "r"(b));
46 return r;
47 }
48
49 #if !ARCH_PPC64
MAC64(int64_t d,int a,int b)50 static inline av_const int64_t MAC64(int64_t d, int a, int b)
51 {
52 union { uint64_t x; unsigned hl[2]; } x = { d };
53 int h, l;
54 __asm__ ("mullw %3, %4, %5 \n\t"
55 "mulhw %2, %4, %5 \n\t"
56 "addc %1, %1, %3 \n\t"
57 "adde %0, %0, %2 \n\t"
58 : "+r"(x.hl[0]), "+r"(x.hl[1]), "=&r"(h), "=&r"(l)
59 : "r"(a), "r"(b));
60 return x.x;
61 }
62 #define MAC64(d, a, b) ((d) = MAC64(d, a, b))
63
MLS64(int64_t d,int a,int b)64 static inline av_const int64_t MLS64(int64_t d, int a, int b)
65 {
66 union { uint64_t x; unsigned hl[2]; } x = { d };
67 int h, l;
68 __asm__ ("mullw %3, %4, %5 \n\t"
69 "mulhw %2, %4, %5 \n\t"
70 "subfc %1, %3, %1 \n\t"
71 "subfe %0, %2, %0 \n\t"
72 : "+r"(x.hl[0]), "+r"(x.hl[1]), "=&r"(h), "=&r"(l)
73 : "r"(a), "r"(b));
74 return x.x;
75 }
76 #define MLS64(d, a, b) ((d) = MLS64(d, a, b))
77 #endif
78
79 #endif /* AVCODEC_PPC_MATHOPS_H */
80