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
|
;******************************************************************************
;* optimized bswap buffer functions
;* Copyright (c) 2008 Loren Merritt
;*
;* 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 "libavutil/x86/x86util.asm"
SECTION_RODATA
pb_bswap32: db 3, 2, 1, 0, 7, 6, 5, 4, 11, 10, 9, 8, 15, 14, 13, 12
SECTION .text
; %1 = aligned/unaligned
%macro BSWAP_LOOPS 1
mov r3d, r2d
sar r2d, 3
jz .left4_%1
.loop8_%1:
mov%1 m0, [r1 + 0]
mov%1 m1, [r1 + 16]
%if cpuflag(ssse3)
pshufb m0, m2
pshufb m1, m2
mov%1 [r0 + 0], m0
mov%1 [r0 + 16], m1
%else
pshuflw m0, m0, 10110001b
pshuflw m1, m1, 10110001b
pshufhw m0, m0, 10110001b
pshufhw m1, m1, 10110001b
mova m2, m0
mova m3, m1
psllw m0, 8
psllw m1, 8
psrlw m2, 8
psrlw m3, 8
por m2, m0
por m3, m1
mov%1 [r0 + 0], m2
mov%1 [r0 + 16], m3
%endif
add r0, 32
add r1, 32
dec r2d
jnz .loop8_%1
.left4_%1:
mov r2d, r3d
test r3d, 4
jz .left
mov%1 m0, [r1]
%if cpuflag(ssse3)
pshufb m0, m2
mov%1 [r0], m0
%else
pshuflw m0, m0, 10110001b
pshufhw m0, m0, 10110001b
mova m2, m0
psllw m0, 8
psrlw m2, 8
por m2, m0
mov%1 [r0], m2
%endif
add r1, 16
add r0, 16
%endmacro
; void ff_bswap_buf(uint32_t *dst, const uint32_t *src, int w);
%macro BSWAP32_BUF 0
%if cpuflag(ssse3)
cglobal bswap32_buf, 3,4,3
mova m2, [pb_bswap32]
%else
cglobal bswap32_buf, 3,4,5
%endif
test r1, 15
jz .start_align
BSWAP_LOOPS u
jmp .left
.start_align:
BSWAP_LOOPS a
.left:
%if cpuflag(ssse3)
test r2d, 2
jz .left1
movq m0, [r1]
pshufb m0, m2
movq [r0], m0
add r1, 8
add r0, 8
.left1:
test r2d, 1
jz .end
mov r2d, [r1]
bswap r2d
mov [r0], r2d
%else
and r2d, 3
jz .end
.loop2:
mov r3d, [r1]
bswap r3d
mov [r0], r3d
add r1, 4
add r0, 4
dec r2d
jnz .loop2
%endif
.end:
RET
%endmacro
INIT_XMM sse2
BSWAP32_BUF
INIT_XMM ssse3
BSWAP32_BUF
|
