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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 6148 | serge | 1 | /* |
| 2 | * Copyright (c) 2008 Mans Rullgard |
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| 3 | * |
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| 4 | * This file is part of FFmpeg. |
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| 5 | * |
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| 6 | * FFmpeg is free software; you can redistribute it and/or |
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| 7 | * modify it under the terms of the GNU Lesser General Public |
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| 8 | * License as published by the Free Software Foundation; either |
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| 9 | * version 2.1 of the License, or (at your option) any later version. |
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| 10 | * |
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| 11 | * FFmpeg is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | * Lesser General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU Lesser General Public |
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| 17 | * License along with FFmpeg; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |||
| 21 | #ifndef AVUTIL_PPC_INTREADWRITE_H |
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| 22 | #define AVUTIL_PPC_INTREADWRITE_H |
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| 23 | |||
| 24 | #include |
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| 25 | #include "config.h" |
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| 26 | |||
| 27 | #if HAVE_XFORM_ASM |
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| 28 | |||
| 29 | #define AV_RL16 AV_RL16 |
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| 30 | static av_always_inline uint16_t AV_RL16(const void *p) |
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| 31 | { |
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| 32 | uint16_t v; |
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| 33 | __asm__ ("lhbrx %0, %y1" : "=r"(v) : "Z"(*(const uint16_t*)p)); |
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| 34 | return v; |
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| 35 | } |
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| 36 | |||
| 37 | #define AV_WL16 AV_WL16 |
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| 38 | static av_always_inline void AV_WL16(void *p, uint16_t v) |
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| 39 | { |
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| 40 | __asm__ ("sthbrx %1, %y0" : "=Z"(*(uint16_t*)p) : "r"(v)); |
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| 41 | } |
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| 42 | |||
| 43 | #define AV_RL32 AV_RL32 |
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| 44 | static av_always_inline uint32_t AV_RL32(const void *p) |
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| 45 | { |
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| 46 | uint32_t v; |
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| 47 | __asm__ ("lwbrx %0, %y1" : "=r"(v) : "Z"(*(const uint32_t*)p)); |
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| 48 | return v; |
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| 49 | } |
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| 50 | |||
| 51 | #define AV_WL32 AV_WL32 |
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| 52 | static av_always_inline void AV_WL32(void *p, uint32_t v) |
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| 53 | { |
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| 54 | __asm__ ("stwbrx %1, %y0" : "=Z"(*(uint32_t*)p) : "r"(v)); |
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| 55 | } |
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| 56 | |||
| 57 | #if HAVE_LDBRX |
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| 58 | |||
| 59 | #define AV_RL64 AV_RL64 |
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| 60 | static av_always_inline uint64_t AV_RL64(const void *p) |
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| 61 | { |
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| 62 | uint64_t v; |
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| 63 | __asm__ ("ldbrx %0, %y1" : "=r"(v) : "Z"(*(const uint64_t*)p)); |
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| 64 | return v; |
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| 65 | } |
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| 66 | |||
| 67 | #define AV_WL64 AV_WL64 |
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| 68 | static av_always_inline void AV_WL64(void *p, uint64_t v) |
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| 69 | { |
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| 70 | __asm__ ("stdbrx %1, %y0" : "=Z"(*(uint64_t*)p) : "r"(v)); |
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| 71 | } |
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| 72 | |||
| 73 | #else |
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| 74 | |||
| 75 | #define AV_RL64 AV_RL64 |
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| 76 | static av_always_inline uint64_t AV_RL64(const void *p) |
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| 77 | { |
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| 78 | union { uint64_t v; uint32_t hl[2]; } v; |
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| 79 | __asm__ ("lwbrx %0, %y2 \n\t" |
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| 80 | "lwbrx %1, %y3 \n\t" |
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| 81 | : "=&r"(v.hl[1]), "=r"(v.hl[0]) |
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| 82 | : "Z"(*(const uint32_t*)p), "Z"(*((const uint32_t*)p+1))); |
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| 83 | return v.v; |
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| 84 | } |
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| 85 | |||
| 86 | #define AV_WL64 AV_WL64 |
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| 87 | static av_always_inline void AV_WL64(void *p, uint64_t v) |
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| 88 | { |
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| 89 | union { uint64_t v; uint32_t hl[2]; } vv = { v }; |
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| 90 | __asm__ ("stwbrx %2, %y0 \n\t" |
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| 91 | "stwbrx %3, %y1 \n\t" |
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| 92 | : "=Z"(*(uint32_t*)p), "=Z"(*((uint32_t*)p+1)) |
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| 93 | : "r"(vv.hl[1]), "r"(vv.hl[0])); |
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| 94 | } |
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| 95 | |||
| 96 | #endif /* HAVE_LDBRX */ |
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| 97 | |||
| 98 | #endif /* HAVE_XFORM_ASM */ |
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| 99 | |||
| 100 | /* |
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| 101 | * GCC fails miserably on the packed struct version which is used by |
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| 102 | * default, so we override it here. |
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| 103 | */ |
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| 104 | |||
| 105 | #define AV_RB64(p) (*(const uint64_t *)(p)) |
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| 106 | #define AV_WB64(p, v) (*(uint64_t *)(p) = (v)) |
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| 107 | |||
| 108 | #endif /* AVUTIL_PPC_INTREADWRITE_H */ |