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
29 #define AV_RL16 AV_RL16
30 static av_always_inline uint16_t AV_RL16(const void *p)
33 __asm__ ("lhbrx %0, %y1" : "=r"(v) : "Z"(*(const uint16_t*)p));
37 #define AV_WL16 AV_WL16
38 static av_always_inline void AV_WL16(void *p, uint16_t v)
40 __asm__ ("sthbrx %1, %y0" : "=Z"(*(uint16_t*)p) : "r"(v));
43 #define AV_RL32 AV_RL32
44 static av_always_inline uint32_t AV_RL32(const void *p)
47 __asm__ ("lwbrx %0, %y1" : "=r"(v) : "Z"(*(const uint32_t*)p));
51 #define AV_WL32 AV_WL32
52 static av_always_inline void AV_WL32(void *p, uint32_t v)
54 __asm__ ("stwbrx %1, %y0" : "=Z"(*(uint32_t*)p) : "r"(v));
59 #define AV_RL64 AV_RL64
60 static av_always_inline uint64_t AV_RL64(const void *p)
63 __asm__ ("ldbrx %0, %y1" : "=r"(v) : "Z"(*(const uint64_t*)p));
67 #define AV_WL64 AV_WL64
68 static av_always_inline void AV_WL64(void *p, uint64_t v)
70 __asm__ ("stdbrx %1, %y0" : "=Z"(*(uint64_t*)p) : "r"(v));
75 #define AV_RL64 AV_RL64
76 static av_always_inline uint64_t AV_RL64(const void *p)
78 union { uint64_t v; uint32_t hl[2]; } v;
79 __asm__ ("lwbrx %0, %y2 \n\t"
81 : "=&r"(v.hl[1]), "=r"(v.hl[0])
82 : "Z"(*(const uint32_t*)p), "Z"(*((const uint32_t*)p+1)));
86 #define AV_WL64 AV_WL64
87 static av_always_inline void AV_WL64(void *p, uint64_t v)
89 union { uint64_t v; uint32_t hl[2]; } vv = { v };
90 __asm__ ("stwbrx %2, %y0 \n\t"
92 : "=Z"(*(uint32_t*)p), "=Z"(*((uint32_t*)p+1))
93 : "r"(vv.hl[1]), "r"(vv.hl[0]));
96 #endif /* HAVE_LDBRX */
98 #endif /* HAVE_XFORM_ASM */
101 * GCC fails miserably on the packed struct version which is used by
102 * default, so we override it here.
105 #define AV_RB64(p) (*(const uint64_t *)(p))
106 #define AV_WB64(p, v) (*(uint64_t *)(p) = (v))
108 #endif /* AVUTIL_PPC_INTREADWRITE_H */