forked from KolibriOS/kolibrios
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
|
/*
|
||
|
|
* This file is part of FFmpeg.
|
||
|
|
*
|
||
|
|
* FFmpeg 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.
|
||
|
|
*
|
||
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef AVUTIL_ARM_INTREADWRITE_H
|
||
|
|
#define AVUTIL_ARM_INTREADWRITE_H
|
||
|
|
|
||
|
|
#include <stdint.h>
|
||
|
|
#include "config.h"
|
||
|
|
#include "libavutil/attributes.h"
|
||
|
|
|
||
|
|
#if HAVE_FAST_UNALIGNED && HAVE_INLINE_ASM && !AV_GCC_VERSION_AT_LEAST(4,7)
|
||
|
|
|
||
|
|
#define AV_RN16 AV_RN16
|
||
|
|
static av_always_inline unsigned AV_RN16(const void *p)
|
||
|
|
{
|
||
|
|
const uint8_t *q = p;
|
||
|
|
unsigned v;
|
||
|
|
#if !AV_GCC_VERSION_AT_LEAST(4,6)
|
||
|
|
__asm__ ("ldrh %0, %1" : "=r"(v) : "m"(*(const uint16_t *)q));
|
||
|
|
#elif defined __thumb__
|
||
|
|
__asm__ ("ldrh %0, %1" : "=r"(v) : "m"(q[0]), "m"(q[1]));
|
||
|
|
#else
|
||
|
|
__asm__ ("ldrh %0, %1" : "=r"(v) : "Uq"(q[0]), "m"(q[1]));
|
||
|
|
#endif
|
||
|
|
return v;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define AV_WN16 AV_WN16
|
||
|
|
static av_always_inline void AV_WN16(void *p, uint16_t v)
|
||
|
|
{
|
||
|
|
__asm__ ("strh %1, %0" : "=m"(*(uint16_t *)p) : "r"(v));
|
||
|
|
}
|
||
|
|
|
||
|
|
#define AV_RN32 AV_RN32
|
||
|
|
static av_always_inline uint32_t AV_RN32(const void *p)
|
||
|
|
{
|
||
|
|
const struct __attribute__((packed)) { uint32_t v; } *q = p;
|
||
|
|
uint32_t v;
|
||
|
|
__asm__ ("ldr %0, %1" : "=r"(v) : "m"(*q));
|
||
|
|
return v;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define AV_WN32 AV_WN32
|
||
|
|
static av_always_inline void AV_WN32(void *p, uint32_t v)
|
||
|
|
{
|
||
|
|
__asm__ ("str %1, %0" : "=m"(*(uint32_t *)p) : "r"(v));
|
||
|
|
}
|
||
|
|
|
||
|
|
#if HAVE_ASM_MOD_Q
|
||
|
|
|
||
|
|
#define AV_RN64 AV_RN64
|
||
|
|
static av_always_inline uint64_t AV_RN64(const void *p)
|
||
|
|
{
|
||
|
|
const struct __attribute__((packed)) { uint32_t v; } *q = p;
|
||
|
|
uint64_t v;
|
||
|
|
__asm__ ("ldr %Q0, %1 \n\t"
|
||
|
|
"ldr %R0, %2 \n\t"
|
||
|
|
: "=&r"(v)
|
||
|
|
: "m"(q[0]), "m"(q[1]));
|
||
|
|
return v;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define AV_WN64 AV_WN64
|
||
|
|
static av_always_inline void AV_WN64(void *p, uint64_t v)
|
||
|
|
{
|
||
|
|
__asm__ ("str %Q2, %0 \n\t"
|
||
|
|
"str %R2, %1 \n\t"
|
||
|
|
: "=m"(*(uint32_t*)p), "=m"(*((uint32_t*)p+1))
|
||
|
|
: "r"(v));
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* HAVE_ASM_MOD_Q */
|
||
|
|
|
||
|
|
#endif /* HAVE_INLINE_ASM */
|
||
|
|
|
||
|
|
#endif /* AVUTIL_ARM_INTREADWRITE_H */
|