0,0 → 1,304 |
/* |
* 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 |
*/ |
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#include "config.h" |
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#ifdef __ELF__ |
# define ELF |
#else |
# define ELF @ |
#endif |
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#if CONFIG_THUMB |
# define A @ |
# define T |
#else |
# define A |
# define T @ |
#endif |
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#if HAVE_NEON |
.arch armv7-a |
#elif HAVE_ARMV6T2 |
.arch armv6t2 |
#elif HAVE_ARMV6 |
.arch armv6 |
#elif HAVE_ARMV5TE |
.arch armv5te |
#endif |
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#if HAVE_NEON |
.fpu neon |
#elif HAVE_VFP |
.fpu vfp |
#endif |
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.syntax unified |
T .thumb |
ELF .eabi_attribute 25, 1 @ Tag_ABI_align_preserved |
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.macro function name, export=0 |
.set .Lpic_idx, 0 |
.set .Lpic_gp, 0 |
.macro endfunc |
.if .Lpic_idx |
.align 2 |
.altmacro |
put_pic %(.Lpic_idx - 1) |
.noaltmacro |
.endif |
ELF .size \name, . - \name |
.endfunc |
.purgem endfunc |
.endm |
.text |
.align 2 |
.if \export |
.global EXTERN_ASM\name |
EXTERN_ASM\name: |
.endif |
ELF .type \name, %function |
.func \name |
\name: |
.endm |
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.macro const name, align=2 |
.macro endconst |
ELF .size \name, . - \name |
.purgem endconst |
.endm |
.section .rodata |
.align \align |
\name: |
.endm |
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#if !HAVE_ARMV6T2_EXTERNAL |
.macro movw rd, val |
mov \rd, \val & 255 |
orr \rd, \val & ~255 |
.endm |
#endif |
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.macro mov32 rd, val |
#if HAVE_ARMV6T2_EXTERNAL |
movw \rd, #(\val) & 0xffff |
.if (\val) >> 16 |
movt \rd, #(\val) >> 16 |
.endif |
#else |
ldr \rd, =\val |
#endif |
.endm |
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.macro put_pic num |
put_pic_\num |
.endm |
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.macro do_def_pic num, val, label |
.macro put_pic_\num |
.if \num |
.altmacro |
put_pic %(\num - 1) |
.noaltmacro |
.endif |
\label: .word \val |
.purgem put_pic_\num |
.endm |
.endm |
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.macro def_pic val, label |
.altmacro |
do_def_pic %.Lpic_idx, \val, \label |
.noaltmacro |
.set .Lpic_idx, .Lpic_idx + 1 |
.endm |
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.macro ldpic rd, val, indir=0 |
ldr \rd, .Lpicoff\@ |
.Lpic\@: |
.if \indir |
A ldr \rd, [pc, \rd] |
T add \rd, pc |
T ldr \rd, [\rd] |
.else |
add \rd, pc |
.endif |
def_pic \val - (.Lpic\@ + (8 >> CONFIG_THUMB)), .Lpicoff\@ |
.endm |
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.macro movrel rd, val |
#if CONFIG_PIC |
ldpic \rd, \val |
#elif HAVE_ARMV6T2_EXTERNAL && !defined(__APPLE__) |
movw \rd, #:lower16:\val |
movt \rd, #:upper16:\val |
#else |
ldr \rd, =\val |
#endif |
.endm |
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.macro movrelx rd, val, gp |
#if CONFIG_PIC && defined(__ELF__) |
.ifnb \gp |
.if .Lpic_gp |
.unreq gp |
.endif |
gp .req \gp |
ldpic gp, _GLOBAL_OFFSET_TABLE_ |
.elseif !.Lpic_gp |
gp .req r12 |
ldpic gp, _GLOBAL_OFFSET_TABLE_ |
.endif |
.set .Lpic_gp, 1 |
ldr \rd, .Lpicoff\@ |
ldr \rd, [gp, \rd] |
def_pic \val(GOT), .Lpicoff\@ |
#elif CONFIG_PIC && defined(__APPLE__) |
ldpic \rd, .Lpic\@, indir=1 |
.non_lazy_symbol_pointer |
.Lpic\@: |
.indirect_symbol \val |
.word 0 |
.text |
#else |
movrel \rd, \val |
#endif |
.endm |
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.macro add_sh rd, rn, rm, sh:vararg |
A add \rd, \rn, \rm, \sh |
T mov \rm, \rm, \sh |
T add \rd, \rn, \rm |
.endm |
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.macro ldr_pre rt, rn, rm:vararg |
A ldr \rt, [\rn, \rm]! |
T add \rn, \rn, \rm |
T ldr \rt, [\rn] |
.endm |
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.macro ldr_dpre rt, rn, rm:vararg |
A ldr \rt, [\rn, -\rm]! |
T sub \rn, \rn, \rm |
T ldr \rt, [\rn] |
.endm |
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.macro ldr_nreg rt, rn, rm:vararg |
A ldr \rt, [\rn, -\rm] |
T sub \rt, \rn, \rm |
T ldr \rt, [\rt] |
.endm |
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.macro ldr_post rt, rn, rm:vararg |
A ldr \rt, [\rn], \rm |
T ldr \rt, [\rn] |
T add \rn, \rn, \rm |
.endm |
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.macro ldrd_reg rt, rt2, rn, rm |
A ldrd \rt, \rt2, [\rn, \rm] |
T add \rt, \rn, \rm |
T ldrd \rt, \rt2, [\rt] |
.endm |
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.macro ldrd_post rt, rt2, rn, rm |
A ldrd \rt, \rt2, [\rn], \rm |
T ldrd \rt, \rt2, [\rn] |
T add \rn, \rn, \rm |
.endm |
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.macro ldrh_pre rt, rn, rm |
A ldrh \rt, [\rn, \rm]! |
T add \rn, \rn, \rm |
T ldrh \rt, [\rn] |
.endm |
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.macro ldrh_dpre rt, rn, rm |
A ldrh \rt, [\rn, -\rm]! |
T sub \rn, \rn, \rm |
T ldrh \rt, [\rn] |
.endm |
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.macro ldrh_post rt, rn, rm |
A ldrh \rt, [\rn], \rm |
T ldrh \rt, [\rn] |
T add \rn, \rn, \rm |
.endm |
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.macro ldrb_post rt, rn, rm |
A ldrb \rt, [\rn], \rm |
T ldrb \rt, [\rn] |
T add \rn, \rn, \rm |
.endm |
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.macro str_post rt, rn, rm:vararg |
A str \rt, [\rn], \rm |
T str \rt, [\rn] |
T add \rn, \rn, \rm |
.endm |
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.macro strb_post rt, rn, rm:vararg |
A strb \rt, [\rn], \rm |
T strb \rt, [\rn] |
T add \rn, \rn, \rm |
.endm |
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.macro strd_post rt, rt2, rn, rm |
A strd \rt, \rt2, [\rn], \rm |
T strd \rt, \rt2, [\rn] |
T add \rn, \rn, \rm |
.endm |
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.macro strh_pre rt, rn, rm |
A strh \rt, [\rn, \rm]! |
T add \rn, \rn, \rm |
T strh \rt, [\rn] |
.endm |
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.macro strh_dpre rt, rn, rm |
A strh \rt, [\rn, -\rm]! |
T sub \rn, \rn, \rm |
T strh \rt, [\rn] |
.endm |
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.macro strh_post rt, rn, rm |
A strh \rt, [\rn], \rm |
T strh \rt, [\rn] |
T add \rn, \rn, \rm |
.endm |
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.macro strh_dpost rt, rn, rm |
A strh \rt, [\rn], -\rm |
T strh \rt, [\rn] |
T sub \rn, \rn, \rm |
.endm |
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#if HAVE_VFP_ARGS |
ELF .eabi_attribute 28, 1 |
# define VFP |
# define NOVFP @ |
#else |
# define VFP @ |
# define NOVFP |
#endif |
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#define GLUE(a, b) a ## b |
#define JOIN(a, b) GLUE(a, b) |
#define X(s) JOIN(EXTERN_ASM, s) |