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
|
///
/// Replacement of synth_1to1() with Intel's SSE SIMD operations support
///
/// This code based 'decode_k7.s' by Nick Kurshev
/// <squash@mb.kcom.ne.jp>,only some types of changes have been made:
///
/// - SSE optimization
/// - change function name for support SSE automatic detect
///
/// Modified by Nick Kurshev <nickols_k@mail.ru>
///
/ synth_1to1_3dnow works the same way as the c version of
/ synth_1to1. this assembler code based 'decode-i586.s'
/ (by Stefan Bieschewski <stb@acm.org>), two types of changes
/ have been made:
/ - use {MMX,3DNow!} instruction for reduce cpu
/ - remove unused(?) local symbols
/
/ useful sources of information on optimizing 3DNow! code include:
/ AMD 3DNow! Technology Manual (Publication #21928)
/ English: http://www.amd.com/K6/k6docs/pdf/21928d.pdf
/ (Japanese: http://www.amd.com/japan/K6/k6docs/j21928c.pdf)
/ AMD-K6-2 Processor Code Optimization Application Note (Publication #21924)
/ English: http://www.amd.com/K6/k6docs/pdf/21924b.pdf
/
/ This code was tested only AMD-K6-2 processor Linux systems,
/ please tell me:
/ - whether this code works on other 3DNow! capable processors
/ (ex.IDT-C6-2) or not
/ - whether this code works on other OSes or not
/
/ by KIMURA Takuhiro <kim@hannah.ipc.miyakyo-u.ac.jp> - until 31.Mar.1998
/ <kim@comtec.co.jp> - after 1.Apr.1998
/ Enhancments for q-word operation by Michael Hipp
.bss
.comm buffs,4352,4
.data
.align 4
bo:
.long 1
.text
/* int synth_1to1(real *bandPtr,int channel,unsigned char *out) */
.globl synth_1to1_sse
synth_1to1_sse:
subl $12,%esp
pushl %ebp
pushl %edi
pushl %esi
pushl %ebx
movl 32(%esp),%eax
movl 40(%esp),%esi
movl $0,%edi
movl bo,%ebp
cmpl %edi,36(%esp)
jne .L48
decl %ebp
andl $15,%ebp
movl %ebp,bo
movl $buffs,%ecx
jmp .L49
.L48:
addl $2,%esi
movl $buffs+2176,%ecx
.L49:
testl $1,%ebp
je .L50
movl %ecx,%ebx
movl %ebp,16(%esp)
pushl %eax
movl 20(%esp),%edx
leal (%ebx,%edx,4),%eax
pushl %eax
movl 24(%esp),%eax
incl %eax
andl $15,%eax
leal 1088(,%eax,4),%eax
addl %ebx,%eax
jmp .L74
.L50:
leal 1088(%ecx),%ebx
leal 1(%ebp),%edx
movl %edx,16(%esp)
pushl %eax
leal 1092(%ecx,%ebp,4),%eax
pushl %eax
leal (%ecx,%ebp,4),%eax
.L74:
pushl %eax
call dct64
addl $12,%esp
movl 16(%esp),%edx
leal 0(,%edx,4),%edx
movl $decwin+64,%eax
movl %eax,%ecx
subl %edx,%ecx
movl $16,%ebp
.L55:
movups (%ecx), %xmm4
mulps (%ebx), %xmm4
movups 16(%ecx), %xmm0
mulps 16(%ebx), %xmm0
addps %xmm0, %xmm4
movups 32(%ecx), %xmm1
mulps 32(%ebx), %xmm1
addps %xmm1, %xmm4
movups 48(%ecx), %xmm0
mulps 48(%ebx), %xmm0
addps %xmm0, %xmm4
shufps $0xDD, %xmm4, %xmm1 /* fake of pfacc. 3|2|3|2 */
addps %xmm1, %xmm4
shufps $0x55, %xmm4, %xmm1 /* fake of pfnacc. 1|1|1|1 */
subps %xmm1, %xmm4
cvtps2pi %xmm4, %mm4
movd %mm4,%eax
sar $16,%eax
movw %ax,(%esi)
addl $64,%ebx
subl $-128,%ecx
addl $4,%esi
decl %ebp
jnz .L55
/ --- end of loop 1 ---
movups (%ecx), %xmm4
mulps (%ebx), %xmm4
movups 16(%ecx), %xmm0
mulps 16(%ebx), %xmm0
addps %xmm0, %xmm4
movups 32(%ecx), %xmm1
mulps 32(%ebx), %xmm1
addps %xmm1, %xmm4
movups 48(%ecx), %xmm0
mulps 48(%ebx), %xmm0
addps %xmm0, %xmm4
shufps $0xDD, %xmm4, %xmm1 /* 3|2|3|2 */
addps %xmm1, %xmm4
cvtps2pi %xmm4, %mm4
movd %mm4, %eax
sar $16,%eax
movw %ax,(%esi)
addl $-64,%ebx
addl $4,%esi
addl $256,%ecx
movl $15,%ebp
.L68:
xorps %xmm3, %xmm3
movups (%ecx), %xmm4
mulps (%ebx), %xmm4
subps %xmm4, %xmm3
movups 16(%ecx), %xmm0
mulps 16(%ebx), %xmm0
subps %xmm0, %xmm3
movups 32(%ecx), %xmm1
mulps 32(%ebx), %xmm1
subps %xmm1, %xmm3
movups 48(%ecx), %xmm0
mulps 48(%ebx), %xmm0
subps %xmm0, %xmm3
shufps $0xDD, %xmm3, %xmm1 /* 3|2|3|2 */
addps %xmm1, %xmm3
shufps $0x55, %xmm3, %xmm1 /* fake of pfacc 1|1|1|1 */
addps %xmm1, %xmm3
cvtps2pi %xmm3, %mm0
movd %mm0,%eax
sar $16,%eax
movw %ax,(%esi)
addl $-64,%ebx
subl $-128,%ecx
addl $4,%esi
decl %ebp
jnz .L68
/ --- end of loop 2
emms
movl %edi,%eax
popl %ebx
popl %esi
popl %edi
popl %ebp
addl $12,%esp
ret
|
