2 * Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #ifndef AVUTIL_PPC_INTREADWRITE_H
22 #define AVUTIL_PPC_INTREADWRITE_H
27 #define AV_RL16 AV_RL16
28 static inline uint16_t AV_RL16(const void *p)
31 __asm__ ("lhbrx %0, %y1" : "=r"(v) : "Z"(*(const uint16_t*)p));
35 #define AV_WL16 AV_WL16
36 static inline void AV_WL16(void *p, uint16_t v)
38 __asm__ ("sthbrx %1, %y0" : "=Z"(*(uint16_t*)p) : "r"(v));
41 #define AV_RL32 AV_RL32
42 static inline uint32_t AV_RL32(const void *p)
45 __asm__ ("lwbrx %0, %y1" : "=r"(v) : "Z"(*(const uint32_t*)p));
49 #define AV_WL32 AV_WL32
50 static inline void AV_WL32(void *p, uint32_t v)
52 __asm__ ("stwbrx %1, %y0" : "=Z"(*(uint32_t*)p) : "r"(v));
57 #define AV_RL64 AV_RL64
58 static inline uint64_t AV_RL64(const void *p)
61 __asm__ ("ldbrx %0, %y1" : "=r"(v) : "Z"(*(const uint64_t*)p));
65 #define AV_WL64 AV_WL64
66 static inline void AV_WL64(void *p, uint64_t v)
68 __asm__ ("stdbrx %1, %y0" : "=Z"(*(uint64_t*)p) : "r"(v));
73 #define AV_RL64 AV_RL64
74 static inline uint64_t AV_RL64(const void *p)
76 union { uint64_t v; uint32_t hl[2]; } v;
77 __asm__ ("lwbrx %0, %y2 \n\t"
79 : "=r"(v.hl[1]), "=r"(v.hl[0])
80 : "Z"(*(const uint32_t*)p), "Z"(*((const uint32_t*)p+1)));
84 #define AV_WL64 AV_WL64
85 static inline void AV_WL64(void *p, uint64_t v)
87 union { uint64_t v; uint32_t hl[2]; } vv = { v };
88 __asm__ ("stwbrx %2, %y0 \n\t"
90 : "=Z"(*(uint32_t*)p), "=Z"(*((uint32_t*)p+1))
91 : "r"(vv.hl[1]), "r"(vv.hl[0]));
94 #endif /* HAVE_LDBRX */
97 * GCC fails miserably on the packed struct version which is used by
98 * default, so we override it here.
101 #define AV_RB64(p) (*(const uint64_t *)(p))
102 #define AV_WB64(p, v) (*(uint64_t *)(p) = (v))
104 #endif /* AVUTIL_PPC_INTREADWRITE_H */