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libavutil
ppc
intreadwrite.h
Go to the documentation of this file.
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/*
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* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVUTIL_PPC_INTREADWRITE_H
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#define AVUTIL_PPC_INTREADWRITE_H
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#include <stdint.h>
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#include "config.h"
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#if HAVE_XFORM_ASM
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#define AV_RL16 AV_RL16
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static
av_always_inline
uint16_t
AV_RL16
(
const
void
*p)
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{
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uint16_t
v
;
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__asm__ (
"lhbrx %0, %y1"
:
"=r"
(v) :
"Z"
(*(
const
uint16_t*)p));
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return
v
;
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}
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#define AV_WL16 AV_WL16
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static
av_always_inline
void
AV_WL16
(
void
*p, uint16_t v)
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{
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__asm__ (
"sthbrx %1, %y0"
:
"=Z"
(*(uint16_t*)p) :
"r"
(v));
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}
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#define AV_RL32 AV_RL32
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static
av_always_inline
uint32_t
AV_RL32
(
const
void
*p)
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{
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uint32_t
v
;
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__asm__ (
"lwbrx %0, %y1"
:
"=r"
(v) :
"Z"
(*(
const
uint32_t*)p));
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return
v
;
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}
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#define AV_WL32 AV_WL32
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static
av_always_inline
void
AV_WL32
(
void
*p, uint32_t v)
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{
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__asm__ (
"stwbrx %1, %y0"
:
"=Z"
(*(uint32_t*)p) :
"r"
(v));
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}
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#if HAVE_LDBRX
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#define AV_RL64 AV_RL64
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static
av_always_inline
uint64_t
AV_RL64
(
const
void
*p)
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{
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uint64_t
v
;
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__asm__ (
"ldbrx %0, %y1"
:
"=r"
(v) :
"Z"
(*(
const
uint64_t*)p));
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return
v
;
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}
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#define AV_WL64 AV_WL64
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static
av_always_inline
void
AV_WL64
(
void
*p, uint64_t v)
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{
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__asm__ (
"stdbrx %1, %y0"
:
"=Z"
(*(uint64_t*)p) :
"r"
(v));
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}
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#else
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#define AV_RL64 AV_RL64
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static
av_always_inline
uint64_t
AV_RL64
(
const
void
*p)
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{
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union
{ uint64_t
v
; uint32_t hl[2]; }
v
;
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__asm__ (
"lwbrx %0, %y2 \n\t"
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"lwbrx %1, %y3 \n\t"
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:
"=&r"
(v.hl[1]),
"=r"
(v.hl[0])
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:
"Z"
(*(
const
uint32_t*)p),
"Z"
(*((
const
uint32_t*)p+1)));
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return
v.v;
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}
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#define AV_WL64 AV_WL64
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static
av_always_inline
void
AV_WL64
(
void
*p, uint64_t v)
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{
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union
{ uint64_t
v
; uint32_t hl[2]; } vv = { v };
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__asm__ (
"stwbrx %2, %y0 \n\t"
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"stwbrx %3, %y1 \n\t"
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:
"=Z"
(*(uint32_t*)p),
"=Z"
(*((uint32_t*)p+1))
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:
"r"
(vv.hl[1]),
"r"
(vv.hl[0]));
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}
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#endif
/* HAVE_LDBRX */
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#endif
/* HAVE_XFORM_ASM */
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/*
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* GCC fails miserably on the packed struct version which is used by
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* default, so we override it here.
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*/
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#define AV_RB64(p) (*(const uint64_t *)(p))
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#define AV_WB64(p, v) (*(uint64_t *)(p) = (v))
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#endif
/* AVUTIL_PPC_INTREADWRITE_H */
Generated on Wed Jul 10 2013 23:48:15 for FFmpeg by
1.8.2