1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
|
/*
* Copyright (c) 2008 Mans Rullgard <mans@mansr.com>
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; 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
#if CONFIG_THUMB
# define A @
# define T
#else
# define A
# define T @
#endif
#if HAVE_NEON
.arch armv7-a
#elif HAVE_ARMV6T2
.arch armv6t2
#elif HAVE_ARMV6
.arch armv6
#elif HAVE_ARMV5TE
.arch armv5te
#endif
#if HAVE_NEON
.fpu neon
#elif HAVE_ARMVFP
.fpu vfp
#endif
.syntax unified
T .thumb
.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
.macro ldr_pre rt, rn, rm:vararg
A ldr \rt, [\rn, \rm]!
T add \rn, \rn, \rm
T ldr \rt, [\rn]
.endm
.macro ldr_post rt, rn, rm:vararg
A ldr \rt, [\rn], \rm
T ldr \rt, [\rn]
T add \rn, \rn, \rm
.endm
.macro ldrd_reg rt, rt2, rn, rm
A ldrd \rt, \rt2, [\rn, \rm]
T add \rt, \rn, \rm
T ldrd \rt, \rt2, [\rt]
.endm
.macro ldrd_post rt, rt2, rn, rm
A ldrd \rt, \rt2, [\rn], \rm
T ldrd \rt, \rt2, [\rn]
T add \rn, \rn, \rm
.endm
.macro ldrh_pre rt, rn, rm
A ldrh \rt, [\rn, \rm]!
T add \rn, \rn, \rm
T ldrh \rt, [\rn]
.endm
.macro ldrh_dpre rt, rn, rm
A ldrh \rt, [\rn, -\rm]!
T sub \rn, \rn, \rm
T ldrh \rt, [\rn]
.endm
.macro ldrh_post rt, rn, rm
A ldrh \rt, [\rn], \rm
T ldrh \rt, [\rn]
T add \rn, \rn, \rm
.endm
.macro str_post rt, rn, rm:vararg
A str \rt, [\rn], \rm
T str \rt, [\rn]
T add \rn, \rn, \rm
.endm
.macro strb_post rt, rn, rm:vararg
A strb \rt, [\rn], \rm
T strb \rt, [\rn]
T add \rn, \rn, \rm
.endm
.macro strd_post rt, rt2, rn, rm
A strd \rt, \rt2, [\rn], \rm
T strd \rt, \rt2, [\rn]
T add \rn, \rn, \rm
.endm
.macro strh_pre rt, rn, rm
A strh \rt, [\rn, \rm]!
T add \rn, \rn, \rm
T strh \rt, [\rn]
.endm
.macro strh_dpre rt, rn, rm
A strh \rt, [\rn, -\rm]!
T sub \rn, \rn, \rm
T strh \rt, [\rn]
.endm
.macro strh_post rt, rn, rm
A strh \rt, [\rn], \rm
T strh \rt, [\rn]
T add \rn, \rn, \rm
.endm
.macro strh_dpost rt, rn, rm
A strh \rt, [\rn], -\rm
T strh \rt, [\rn]
T sub \rn, \rn, \rm
.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)
|
