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ffmpeg/libavutil/aarch64/asm.S

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ArmAsm
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aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
2013-12-10 20:13:32 +01:00
/*
* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
*
Merge commit 'b7b17ed66e199afc7246e642bf3b35c3f8eca217' * commit 'b7b17ed66e199afc7246e642bf3b35c3f8eca217': aarch64: add cpuflags support for NEON and VFP Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-01-15 14:41:41 +01:00
* This file is part of FFmpeg.
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
2013-12-10 20:13:32 +01:00
*
Merge commit 'b7b17ed66e199afc7246e642bf3b35c3f8eca217' * commit 'b7b17ed66e199afc7246e642bf3b35c3f8eca217': aarch64: add cpuflags support for NEON and VFP Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-01-15 14:41:41 +01:00
* FFmpeg is free software; you can redistribute it and/or
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
2013-12-10 20:13:32 +01:00
* 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.
*
Merge commit 'b7b17ed66e199afc7246e642bf3b35c3f8eca217' * commit 'b7b17ed66e199afc7246e642bf3b35c3f8eca217': aarch64: add cpuflags support for NEON and VFP Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-01-15 14:41:41 +01:00
* FFmpeg is distributed in the hope that it will be useful,
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
2013-12-10 20:13:32 +01:00
* 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
Merge commit 'b7b17ed66e199afc7246e642bf3b35c3f8eca217' * commit 'b7b17ed66e199afc7246e642bf3b35c3f8eca217': aarch64: add cpuflags support for NEON and VFP Merged-by: Michael Niedermayer <michaelni@gmx.at>
2014-01-15 14:41:41 +01:00
* License along with FFmpeg; if not, write to the Free Software
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#ifdef __ELF__
# define ELF
#else
aarch64: use '#' for whole line asm comments Both gnu as and clang treat lines starting with '#' as comments if they aren't consumed by the C-style preprocessor. Using '//' does not work with clang since comments are removed before macro expansion.
2014-05-30 16:57:44 +02:00
# define ELF #
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
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#endif
build: check if AS supports the '.func' directive Not supported by Clang's integrated assembler. Since it just adds debug information it can safely omitted.
2014-05-30 09:58:43 +02:00
#if HAVE_AS_FUNC
# define FUNC
#else
# define FUNC #
#endif
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
2013-12-10 20:13:32 +01:00
.macro function name, export=0, align=2
.macro endfunc
ELF .size \name, . - \name
build: check if AS supports the '.func' directive Not supported by Clang's integrated assembler. Since it just adds debug information it can safely omitted.
2014-05-30 09:58:43 +02:00
FUNC .endfunc
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
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.purgem endfunc
.endm
.text
.align \align
.if \export
.global EXTERN_ASM\name
aarch64: use EXTERN_ASM consistently for exported symbols Based on e3fec3f095ab5ea08ee662942d98526aaf5e3635 for arm.
2014-02-07 16:05:50 +01:00
ELF .type EXTERN_ASM\name, %function
build: check if AS supports the '.func' directive Not supported by Clang's integrated assembler. Since it just adds debug information it can safely omitted.
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FUNC .func EXTERN_ASM\name
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
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EXTERN_ASM\name:
aarch64: use EXTERN_ASM consistently for exported symbols Based on e3fec3f095ab5ea08ee662942d98526aaf5e3635 for arm.
2014-02-07 16:05:50 +01:00
.else
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
2013-12-10 20:13:32 +01:00
ELF .type \name, %function
build: check if AS supports the '.func' directive Not supported by Clang's integrated assembler. Since it just adds debug information it can safely omitted.
2014-05-30 09:58:43 +02:00
FUNC .func \name
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
2013-12-10 20:13:32 +01:00
\name:
aarch64: use EXTERN_ASM consistently for exported symbols Based on e3fec3f095ab5ea08ee662942d98526aaf5e3635 for arm.
2014-02-07 16:05:50 +01:00
.endif
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
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.endm
aarch64: Use .data.rel.ro for const data with relocations This reverts commit c00365b46d464ce47716315c1801818d811bdb9a in addition to using a different section. Signed-off-by: Martin Storsjö <martin@martin.st>
2014-11-16 11:52:21 +01:00
.macro const name, align=2, relocate=0
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
2013-12-10 20:13:32 +01:00
.macro endconst
ELF .size \name, . - \name
.purgem endconst
.endm
aarch64: Use .data.rel.ro for const data with relocations This reverts commit c00365b46d464ce47716315c1801818d811bdb9a in addition to using a different section. Signed-off-by: Martin Storsjö <martin@martin.st>
2014-11-16 11:52:21 +01:00
#if HAVE_SECTION_DATA_REL_RO
.if \relocate
.section .data.rel.ro
.else
.section .rodata
.endif
#elif !defined(__MACH__)
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
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.section .rodata
aarch64: use MACH-O const data asm directive in const macro
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#else
.const_data
#endif
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
2013-12-10 20:13:32 +01:00
.align \align
\name:
.endm
.macro movrel rd, val
aarch64: add darwin style PAGE/PAGEOFF relocations
2014-06-01 15:50:42 +02:00
#if CONFIG_PIC && defined(__APPLE__)
adrp \rd, \val@PAGE
add \rd, \rd, \val@PAGEOFF
#elif CONFIG_PIC
aarch64: remove optional :pg_hi21: for adrp instruction Clang's integrated assembler does not support it.
2014-06-03 11:24:15 +02:00
adrp \rd, \val
aarch64: Use the correct syntax for relocations This fixes building in PIC mode with gas. The examples in the gas manual showed using a # here even though gas itself actually didn't support that syntax (and the gas test suite only tests it without the extra hash sign). CC: libav-stable@libav.org Signed-off-by: Martin Storsjö <martin@martin.st>
2014-05-29 13:37:31 +02:00
add \rd, \rd, :lo12:\val
aarch64: add cpuflags support for NEON and VFP NEON and VFP are currently mandatory for all ARMv8 profiles. Both are handled as extensions as far as cpuflags are concerned. This is consistent with handling x86_64 which always has SSE2, but still handles it as an extension.
2013-12-10 20:13:32 +01:00
#else
ldr \rd, =\val
#endif
.endm
aarch64: use EXTERN_ASM consistently for exported symbols Based on e3fec3f095ab5ea08ee662942d98526aaf5e3635 for arm.
2014-02-07 16:05:50 +01:00
#define GLUE(a, b) a ## b
#define JOIN(a, b) GLUE(a, b)
#define X(s) JOIN(EXTERN_ASM, s)
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