ref: 466b524bff228e0096c2a835d3c2abfbf92b825c
dir: /src/arm/32/util.S/
/******************************************************************************
* Copyright © 2018, VideoLAN and dav1d authors
* Copyright © 2015 Martin Storsjo
* Copyright © 2015 Janne Grunau
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*****************************************************************************/
#ifndef DAVID_SRC_ARM_32_UTIL_S
#define DAVID_SRC_ARM_32_UTIL_S
#include "config.h"
#include "src/arm/asm.S"
.macro movrel rd, val, offset=0
#if defined(PIC) && defined(__APPLE__)
ldr \rd, 1f
b 2f
1:
.word 3f - (2f + 8 - 4 * CONFIG_THUMB)
2:
ldr \rd, [pc, \rd]
.if \offset < 0
sub \rd, \rd, #-(\offset)
.elseif \offset > 0
add \rd, \rd, #\offset
.endif
.non_lazy_symbol_pointer
3:
.indirect_symbol \val
.word 0
.text
#elif defined(PIC)
ldr \rd, 1f
b 2f
1:
.word \val + \offset - (2f + 8 - 4 * CONFIG_THUMB)
2:
add \rd, \rd, pc
#else
movw \rd, #:lower16:\val+\offset
movt \rd, #:upper16:\val+\offset
#endif
.endm
#endif /* DAVID_SRC_ARM_32_UTIL_S */