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686959e87e
* qatar/master: doxygen: Consistently use '@' instead of '\' for Doxygen markup. Use av_printf_format to check the usage of printf style functions Add av_printf_format, for marking printf style format strings and their parameters ARM: enable thumb for Cortex-M* CPUs nsvdec: Propagate error values instead of returning 0 in nsv_read_header(). build: remove SRC_PATH_BARE variable build: move basic rules and variables to main Makefile build: move special targets to end of main Makefile lavdev: improve feedback in case of invalid frame rate/size vfwcap: prefer "framerate_q" over "fps" in vfw_read_header() v4l2: prefer "framerate_q" over "fps" in v4l2_set_parameters() fbdev: prefer "framerate_q" over "fps" in device context bktr: prefer "framerate" over "fps" for grab_read_header() ALSA: implement channel layout for playback. alsa: support unsigned variants of already supported signed formats. alsa: add support for more formats. ARM: allow building in Thumb2 mode Conflicts: common.mak doc/APIchanges libavcodec/vdpau.h libavdevice/alsa-audio-common.c libavdevice/fbdev.c libavdevice/libdc1394.c libavutil/avutil.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
190 lines
4.5 KiB
ArmAsm
190 lines
4.5 KiB
ArmAsm
/*
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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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#include "config.h"
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#ifdef __ELF__
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# define ELF
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#else
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# define ELF @
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#endif
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#if CONFIG_THUMB
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# define A @
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# define T
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#else
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# define A
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# define T @
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#endif
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.syntax unified
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T .thumb
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.macro require8 val=1
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ELF .eabi_attribute 24, \val
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.endm
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.macro preserve8 val=1
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ELF .eabi_attribute 25, \val
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.endm
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.macro function name, export=0
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.macro endfunc
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ELF .size \name, . - \name
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.endfunc
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.purgem endfunc
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.endm
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.text
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.if \export
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.global EXTERN_ASM\name
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EXTERN_ASM\name:
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.endif
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ELF .type \name, %function
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.func \name
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\name:
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.endm
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.macro const name, align=2
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.macro endconst
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ELF .size \name, . - \name
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.purgem endconst
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.endm
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.section .rodata
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.align \align
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\name:
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.endm
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.macro mov32 rd, val
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#if HAVE_ARMV6T2
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movw \rd, #(\val) & 0xffff
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.if (\val) >> 16
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movt \rd, #(\val) >> 16
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.endif
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#else
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ldr \rd, =\val
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#endif
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.endm
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.macro movrel rd, val
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#if HAVE_ARMV6T2 && !CONFIG_PIC && !defined(__APPLE__)
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movw \rd, #:lower16:\val
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movt \rd, #:upper16:\val
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#else
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ldr \rd, =\val
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#endif
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.endm
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.macro ldr_pre rt, rn, rm:vararg
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A ldr \rt, [\rn, \rm]!
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T add \rn, \rn, \rm
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T ldr \rt, [\rn]
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.endm
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.macro ldr_post rt, rn, rm:vararg
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A ldr \rt, [\rn], \rm
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T ldr \rt, [\rn]
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T add \rn, \rn, \rm
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.endm
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.macro ldrd_reg rt, rt2, rn, rm
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A ldrd \rt, \rt2, [\rn, \rm]
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T add \rt, \rn, \rm
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T ldrd \rt, \rt2, [\rt]
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.endm
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.macro ldrd_post rt, rt2, rn, rm
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A ldrd \rt, \rt2, [\rn], \rm
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T ldrd \rt, \rt2, [\rn]
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T add \rn, \rn, \rm
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.endm
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.macro ldrh_pre rt, rn, rm
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A ldrh \rt, [\rn, \rm]!
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T add \rn, \rn, \rm
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T ldrh \rt, [\rn]
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.endm
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.macro ldrh_dpre rt, rn, rm
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A ldrh \rt, [\rn, -\rm]!
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T sub \rn, \rn, \rm
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T ldrh \rt, [\rn]
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.endm
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.macro ldrh_post rt, rn, rm
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A ldrh \rt, [\rn], \rm
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T ldrh \rt, [\rn]
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T add \rn, \rn, \rm
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.endm
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.macro str_post rt, rn, rm:vararg
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A str \rt, [\rn], \rm
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T str \rt, [\rn]
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T add \rn, \rn, \rm
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.endm
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.macro strb_post rt, rn, rm:vararg
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A strb \rt, [\rn], \rm
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T strb \rt, [\rn]
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T add \rn, \rn, \rm
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.endm
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.macro strd_post rt, rt2, rn, rm
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A strd \rt, \rt2, [\rn], \rm
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T strd \rt, \rt2, [\rn]
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T add \rn, \rn, \rm
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.endm
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.macro strh_pre rt, rn, rm
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A strh \rt, [\rn, \rm]!
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T add \rn, \rn, \rm
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T strh \rt, [\rn]
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.endm
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.macro strh_dpre rt, rn, rm
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A strh \rt, [\rn, -\rm]!
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T sub \rn, \rn, \rm
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T strh \rt, [\rn]
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.endm
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.macro strh_post rt, rn, rm
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A strh \rt, [\rn], \rm
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T strh \rt, [\rn]
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T add \rn, \rn, \rm
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.endm
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.macro strh_dpost rt, rn, rm
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A strh \rt, [\rn], -\rm
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T strh \rt, [\rn]
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T sub \rn, \rn, \rm
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.endm
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#if HAVE_VFP_ARGS
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.eabi_attribute 28, 1
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# define VFP
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# define NOVFP @
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#else
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# define VFP @
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# define NOVFP
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#endif
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#define GLUE(a, b) a ## b
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#define JOIN(a, b) GLUE(a, b)
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#define X(s) JOIN(EXTERN_ASM, s)
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