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
30 #define AV_RL16 AV_RX16
31 #define AV_WL16 AV_WX16
32 #define AV_RL32 AV_RX32
33 #define AV_WL32 AV_WX32
35 #define AV_RB16 AV_RX16
36 #define AV_WB16 AV_WX16
37 #define AV_RB32 AV_RX32
38 #define AV_WB32 AV_WX32
41 static av_always_inline uint16_t AV_RX16(const void *p)
44 __asm__ ("lhbrx %0, %y1" : "=r"(v) : "Z"(*(const uint16_t*)p));
48 static av_always_inline void AV_WX16(void *p, uint16_t v)
50 __asm__ ("sthbrx %1, %y0" : "=Z"(*(uint16_t*)p) : "r"(v));
53 static av_always_inline uint32_t AV_RX32(const void *p)
56 __asm__ ("lwbrx %0, %y1" : "=r"(v) : "Z"(*(const uint32_t*)p));
60 static av_always_inline void AV_WX32(void *p, uint32_t v)
62 __asm__ ("stwbrx %1, %y0" : "=Z"(*(uint32_t*)p) : "r"(v));
68 #define AV_RL64 AV_RX64
69 #define AV_WL64 AV_WX64
71 #define AV_RB64 AV_RX64
72 #define AV_WB64 AV_WX64
75 static av_always_inline uint64_t AV_RX64(const void *p)
78 __asm__ ("ldbrx %0, %y1" : "=r"(v) : "Z"(*(const uint64_t*)p));
82 static av_always_inline void AV_WX64(void *p, uint64_t v)
84 __asm__ ("stdbrx %1, %y0" : "=Z"(*(uint64_t*)p) : "r"(v));
89 #define AV_RL64 AV_RL64
90 static av_always_inline uint64_t AV_RL64(const void *p)
92 union { uint64_t v; uint32_t hl[2]; } v;
93 __asm__ ("lwbrx %0, %y2 \n\t"
95 : "=&r"(v.hl[1]), "=r"(v.hl[0])
96 : "Z"(*(const uint32_t*)p), "Z"(*((const uint32_t*)p+1)));
100 #define AV_WL64 AV_WL64
101 static av_always_inline void AV_WL64(void *p, uint64_t v)
103 union { uint64_t v; uint32_t hl[2]; } vv = { v };
104 __asm__ ("stwbrx %2, %y0 \n\t"
105 "stwbrx %3, %y1 \n\t"
106 : "=Z"(*(uint32_t*)p), "=Z"(*((uint32_t*)p+1))
107 : "r"(vv.hl[1]), "r"(vv.hl[0]));
110 #endif /* HAVE_LDBRX */
112 #endif /* HAVE_XFORM_ASM */
115 * GCC fails miserably on the packed struct version which is used by
116 * default, so we override it here.
120 #define AV_RB64(p) (*(const uint64_t *)(p))
121 #define AV_WB64(p, v) (*(uint64_t *)(p) = (v))
124 #endif /* AVUTIL_PPC_INTREADWRITE_H */