ffmpeg/libavcodec/arm/asm.S
Michael Niedermayer 5a35cef4b1 Merge remote-tracking branch 'qatar/master'
* qatar/master:
  ARM: enable UAL syntax in asm.S
  v4l2: don't leak video standard string on error.
  swscale: Remove disabled code.
  avfilter: Surround function only used in debug mode by appropriate #ifdef.
  vf_crop: Replace #ifdef DEBUG + av_log() by av_dlog().
  build: remove BUILD_ROOT variable
  vp8: use av_clip_uintp2() where possible

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2011-05-30 01:29:11 +02:00

97 lines
2.2 KiB
ArmAsm

/*
* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
*
* 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
*/
#include "config.h"
#ifdef __ELF__
# define ELF
#else
# define ELF @
#endif
.syntax unified
.macro require8 val=1
ELF .eabi_attribute 24, \val
.endm
.macro preserve8 val=1
ELF .eabi_attribute 25, \val
.endm
.macro function name, export=0
.macro endfunc
ELF .size \name, . - \name
.endfunc
.purgem endfunc
.endm
.text
.if \export
.global EXTERN_ASM\name
EXTERN_ASM\name:
.endif
ELF .type \name, %function
.func \name
\name:
.endm
.macro const name, align=2
.macro endconst
ELF .size \name, . - \name
.purgem endconst
.endm
.section .rodata
.align \align
\name:
.endm
.macro mov32 rd, val
#if HAVE_ARMV6T2
movw \rd, #(\val) & 0xffff
.if (\val) >> 16
movt \rd, #(\val) >> 16
.endif
#else
ldr \rd, =\val
#endif
.endm
.macro movrel rd, val
#if HAVE_ARMV6T2 && !CONFIG_PIC && !defined(__APPLE__)
movw \rd, #:lower16:\val
movt \rd, #:upper16:\val
#else
ldr \rd, =\val
#endif
.endm
#if HAVE_VFP_ARGS
.eabi_attribute 28, 1
# define VFP
# define NOVFP @
#else
# define VFP @
# define NOVFP
#endif
#define GLUE(a, b) a ## b
#define JOIN(a, b) GLUE(a, b)
#define X(s) JOIN(EXTERN_ASM, s)