mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
109 lines
2.9 KiB
C
109 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* Libav is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVUTIL_PPC_INTREADWRITE_H
|
|
#define AVUTIL_PPC_INTREADWRITE_H
|
|
|
|
#include <stdint.h>
|
|
#include "config.h"
|
|
|
|
#if HAVE_XFORM_ASM
|
|
|
|
#define AV_RL16 AV_RL16
|
|
static av_always_inline uint16_t AV_RL16(const void *p)
|
|
{
|
|
uint16_t v;
|
|
__asm__ ("lhbrx %0, %y1" : "=r"(v) : "Z"(*(const uint16_t*)p));
|
|
return v;
|
|
}
|
|
|
|
#define AV_WL16 AV_WL16
|
|
static av_always_inline void AV_WL16(void *p, uint16_t v)
|
|
{
|
|
__asm__ ("sthbrx %1, %y0" : "=Z"(*(uint16_t*)p) : "r"(v));
|
|
}
|
|
|
|
#define AV_RL32 AV_RL32
|
|
static av_always_inline uint32_t AV_RL32(const void *p)
|
|
{
|
|
uint32_t v;
|
|
__asm__ ("lwbrx %0, %y1" : "=r"(v) : "Z"(*(const uint32_t*)p));
|
|
return v;
|
|
}
|
|
|
|
#define AV_WL32 AV_WL32
|
|
static av_always_inline void AV_WL32(void *p, uint32_t v)
|
|
{
|
|
__asm__ ("stwbrx %1, %y0" : "=Z"(*(uint32_t*)p) : "r"(v));
|
|
}
|
|
|
|
#if HAVE_LDBRX
|
|
|
|
#define AV_RL64 AV_RL64
|
|
static av_always_inline uint64_t AV_RL64(const void *p)
|
|
{
|
|
uint64_t v;
|
|
__asm__ ("ldbrx %0, %y1" : "=r"(v) : "Z"(*(const uint64_t*)p));
|
|
return v;
|
|
}
|
|
|
|
#define AV_WL64 AV_WL64
|
|
static av_always_inline void AV_WL64(void *p, uint64_t v)
|
|
{
|
|
__asm__ ("stdbrx %1, %y0" : "=Z"(*(uint64_t*)p) : "r"(v));
|
|
}
|
|
|
|
#else
|
|
|
|
#define AV_RL64 AV_RL64
|
|
static av_always_inline uint64_t AV_RL64(const void *p)
|
|
{
|
|
union { uint64_t v; uint32_t hl[2]; } v;
|
|
__asm__ ("lwbrx %0, %y2 \n\t"
|
|
"lwbrx %1, %y3 \n\t"
|
|
: "=&r"(v.hl[1]), "=r"(v.hl[0])
|
|
: "Z"(*(const uint32_t*)p), "Z"(*((const uint32_t*)p+1)));
|
|
return v.v;
|
|
}
|
|
|
|
#define AV_WL64 AV_WL64
|
|
static av_always_inline void AV_WL64(void *p, uint64_t v)
|
|
{
|
|
union { uint64_t v; uint32_t hl[2]; } vv = { v };
|
|
__asm__ ("stwbrx %2, %y0 \n\t"
|
|
"stwbrx %3, %y1 \n\t"
|
|
: "=Z"(*(uint32_t*)p), "=Z"(*((uint32_t*)p+1))
|
|
: "r"(vv.hl[1]), "r"(vv.hl[0]));
|
|
}
|
|
|
|
#endif /* HAVE_LDBRX */
|
|
|
|
#endif /* HAVE_XFORM_ASM */
|
|
|
|
/*
|
|
* GCC fails miserably on the packed struct version which is used by
|
|
* default, so we override it here.
|
|
*/
|
|
|
|
#define AV_RB64(p) (*(const uint64_t *)(p))
|
|
#define AV_WB64(p, v) (*(uint64_t *)(p) = (v))
|
|
|
|
#endif /* AVUTIL_PPC_INTREADWRITE_H */
|