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
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
#!/usr/bin/env perl
$flavour = shift;
$0 =~ m/(.*[\/\\])[^\/\\]+$/; $dir=$1;
( $xlate="${dir}ppc-xlate.pl" and -f $xlate ) or
( $xlate="${dir}perlasm/ppc-xlate.pl" and -f $xlate) or
die "can't locate ppc-xlate.pl";
open STDOUT,"| $^X $xlate $flavour ".shift || die "can't call $xlate: $!";
if ($flavour=~/64/) {
$CMPLI="cmpldi";
$SHRLI="srdi";
$SIGNX="extsw";
} else {
$CMPLI="cmplwi";
$SHRLI="srwi";
$SIGNX="mr";
}
$code=<<___;
.machine "any"
.text
.globl .OPENSSL_ppc64_probe
.align 4
.OPENSSL_ppc64_probe:
fcfid f1,f1
extrdi r0,r0,32,0
blr
.long 0
.byte 0,12,0x14,0,0,0,0,0
.size .OPENSSL_ppc64_probe,.-.OPENSSL_ppc64_probe
.globl .OPENSSL_altivec_probe
.align 4
.OPENSSL_altivec_probe:
.long 0x10000484 # vor v0,v0,v0
blr
.long 0
.byte 0,12,0x14,0,0,0,0,0
.size .OPENSSL_altivec_probe,.-..OPENSSL_altivec_probe
.globl .OPENSSL_wipe_cpu
.align 4
.OPENSSL_wipe_cpu:
xor r0,r0,r0
fmr f0,f31
fmr f1,f31
fmr f2,f31
mr r3,r1
fmr f3,f31
xor r4,r4,r4
fmr f4,f31
xor r5,r5,r5
fmr f5,f31
xor r6,r6,r6
fmr f6,f31
xor r7,r7,r7
fmr f7,f31
xor r8,r8,r8
fmr f8,f31
xor r9,r9,r9
fmr f9,f31
xor r10,r10,r10
fmr f10,f31
xor r11,r11,r11
fmr f11,f31
xor r12,r12,r12
fmr f12,f31
fmr f13,f31
blr
.long 0
.byte 0,12,0x14,0,0,0,0,0
.size .OPENSSL_wipe_cpu,.-.OPENSSL_wipe_cpu
.globl .OPENSSL_atomic_add
.align 4
.OPENSSL_atomic_add:
Ladd: lwarx r5,0,r3
add r0,r4,r5
stwcx. r0,0,r3
bne- Ladd
$SIGNX r3,r0
blr
.long 0
.byte 0,12,0x14,0,0,0,2,0
.long 0
.size .OPENSSL_atomic_add,.-.OPENSSL_atomic_add
.globl .OPENSSL_rdtsc
.align 4
.OPENSSL_rdtsc:
mftb r3
mftbu r4
blr
.long 0
.byte 0,12,0x14,0,0,0,0,0
.size .OPENSSL_rdtsc,.-.OPENSSL_rdtsc
.globl .OPENSSL_cleanse
.align 4
.OPENSSL_cleanse:
$CMPLI r4,7
li r0,0
bge Lot
$CMPLI r4,0
beqlr-
Little: mtctr r4
stb r0,0(r3)
addi r3,r3,1
bdnz \$-8
blr
Lot: andi. r5,r3,3
beq Laligned
stb r0,0(r3)
subi r4,r4,1
addi r3,r3,1
b Lot
Laligned:
$SHRLI r5,r4,2
mtctr r5
stw r0,0(r3)
addi r3,r3,4
bdnz \$-8
andi. r4,r4,3
bne Little
blr
.long 0
.byte 0,12,0x14,0,0,0,2,0
.long 0
.size .OPENSSL_cleanse,.-.OPENSSL_cleanse
___
{
my ($out,$cnt,$max)=("r3","r4","r5");
my ($tick,$lasttick)=("r6","r7");
my ($diff,$lastdiff)=("r8","r9");
$code.=<<___;
.globl .OPENSSL_instrument_bus
.align 4
.OPENSSL_instrument_bus:
mtctr $cnt
mftb $lasttick # collect 1st tick
li $diff,0
dcbf 0,$out # flush cache line
lwarx $tick,0,$out # load and lock
add $tick,$tick,$diff
stwcx. $tick,0,$out
stwx $tick,0,$out
Loop: mftb $tick
sub $diff,$tick,$lasttick
mr $lasttick,$tick
dcbf 0,$out # flush cache line
lwarx $tick,0,$out # load and lock
add $tick,$tick,$diff
stwcx. $tick,0,$out
stwx $tick,0,$out
addi $out,$out,4 # ++$out
bdnz Loop
mr r3,$cnt
blr
.long 0
.byte 0,12,0x14,0,0,0,2,0
.long 0
.size .OPENSSL_instrument_bus,.-.OPENSSL_instrument_bus
.globl .OPENSSL_instrument_bus2
.align 4
.OPENSSL_instrument_bus2:
mr r0,$cnt
slwi $cnt,$cnt,2
mftb $lasttick # collect 1st tick
li $diff,0
dcbf 0,$out # flush cache line
lwarx $tick,0,$out # load and lock
add $tick,$tick,$diff
stwcx. $tick,0,$out
stwx $tick,0,$out
mftb $tick # collect 1st diff
sub $diff,$tick,$lasttick
mr $lasttick,$tick
mr $lastdiff,$diff
Loop2:
dcbf 0,$out # flush cache line
lwarx $tick,0,$out # load and lock
add $tick,$tick,$diff
stwcx. $tick,0,$out
stwx $tick,0,$out
addic. $max,$max,-1
beq Ldone2
mftb $tick
sub $diff,$tick,$lasttick
mr $lasttick,$tick
cmplw 7,$diff,$lastdiff
mr $lastdiff,$diff
mfcr $tick # pull cr
not $tick,$tick # flip bits
rlwinm $tick,$tick,1,29,29 # isolate flipped eq bit and scale
sub. $cnt,$cnt,$tick # conditional --$cnt
add $out,$out,$tick # conditional ++$out
bne Loop2
Ldone2:
srwi $cnt,$cnt,2
sub r3,r0,$cnt
blr
.long 0
.byte 0,12,0x14,0,0,0,3,0
.long 0
.size .OPENSSL_instrument_bus2,.-.OPENSSL_instrument_bus2
___
}
$code =~ s/\`([^\`]*)\`/eval $1/gem;
print $code;
close STDOUT;
|