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
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
|
#if defined(__SUNPRO_C) && defined(__sparcv9)
# define ABI64 /* They've said -xarch=v9 at command line */
#elif defined(__GNUC__) && defined(__arch64__)
# define ABI64 /* They've said -m64 at command line */
#endif
#ifdef ABI64
.register %g2,#scratch
.register %g3,#scratch
# define FRAME -192
# define BIAS 2047
#else
# define FRAME -96
# define BIAS 0
#endif
.text
.align 32
.global OPENSSL_wipe_cpu
.type OPENSSL_wipe_cpu,#function
! Keep in mind that this does not excuse us from wiping the stack!
! This routine wipes registers, but not the backing store [which
! resides on the stack, toward lower addresses]. To facilitate for
! stack wiping I return pointer to the top of stack of the *caller*.
OPENSSL_wipe_cpu:
save %sp,FRAME,%sp
nop
#ifdef __sun
#include <sys/trap.h>
ta ST_CLEAN_WINDOWS
#else
call .walk.reg.wins
#endif
nop
call .PIC.zero.up
mov .zero-(.-4),%o0
ld [%o0],%f0
ld [%o0],%f1
subcc %g0,1,%o0
! Following is V9 "rd %ccr,%o0" instruction. However! V8
! specification says that it ("rd %asr2,%o0" in V8 terms) does
! not cause illegal_instruction trap. It therefore can be used
! to determine if the CPU the code is executing on is V8- or
! V9-compliant, as V9 returns a distinct value of 0x99,
! "negative" and "borrow" bits set in both %icc and %xcc.
.word 0x91408000 !rd %ccr,%o0
cmp %o0,0x99
bne .v8
nop
! Even though we do not use %fp register bank,
! we wipe it as memcpy might have used it...
.word 0xbfa00040 !fmovd %f0,%f62
.word 0xbba00040 !...
.word 0xb7a00040
.word 0xb3a00040
.word 0xafa00040
.word 0xaba00040
.word 0xa7a00040
.word 0xa3a00040
.word 0x9fa00040
.word 0x9ba00040
.word 0x97a00040
.word 0x93a00040
.word 0x8fa00040
.word 0x8ba00040
.word 0x87a00040
.word 0x83a00040 !fmovd %f0,%f32
.v8: fmovs %f1,%f31
clr %o0
fmovs %f0,%f30
clr %o1
fmovs %f1,%f29
clr %o2
fmovs %f0,%f28
clr %o3
fmovs %f1,%f27
clr %o4
fmovs %f0,%f26
clr %o5
fmovs %f1,%f25
clr %o7
fmovs %f0,%f24
clr %l0
fmovs %f1,%f23
clr %l1
fmovs %f0,%f22
clr %l2
fmovs %f1,%f21
clr %l3
fmovs %f0,%f20
clr %l4
fmovs %f1,%f19
clr %l5
fmovs %f0,%f18
clr %l6
fmovs %f1,%f17
clr %l7
fmovs %f0,%f16
clr %i0
fmovs %f1,%f15
clr %i1
fmovs %f0,%f14
clr %i2
fmovs %f1,%f13
clr %i3
fmovs %f0,%f12
clr %i4
fmovs %f1,%f11
clr %i5
fmovs %f0,%f10
clr %g1
fmovs %f1,%f9
clr %g2
fmovs %f0,%f8
clr %g3
fmovs %f1,%f7
clr %g4
fmovs %f0,%f6
clr %g5
fmovs %f1,%f5
fmovs %f0,%f4
fmovs %f1,%f3
fmovs %f0,%f2
add %fp,BIAS,%i0 ! return pointer to caller´s top of stack
ret
restore
.zero: .long 0x0,0x0
.PIC.zero.up:
retl
add %o0,%o7,%o0
#ifdef DEBUG
.global walk_reg_wins
.type walk_reg_wins,#function
walk_reg_wins:
#endif
.walk.reg.wins:
save %sp,FRAME,%sp
cmp %i7,%o7
be 2f
clr %o0
cmp %o7,0 ! compiler never cleans %o7...
be 1f ! could have been a leaf function...
clr %o1
call .walk.reg.wins
nop
1: clr %o2
clr %o3
clr %o4
clr %o5
clr %o7
clr %l0
clr %l1
clr %l2
clr %l3
clr %l4
clr %l5
clr %l6
clr %l7
add %o0,1,%i0 ! used for debugging
2: ret
restore
.size OPENSSL_wipe_cpu,.-OPENSSL_wipe_cpu
.global OPENSSL_atomic_add
.type OPENSSL_atomic_add,#function
.align 32
OPENSSL_atomic_add:
#ifndef ABI64
subcc %g0,1,%o2
.word 0x95408000 !rd %ccr,%o2, see comment above
cmp %o2,0x99
be .v9
nop
save %sp,FRAME,%sp
ba .enter
nop
#ifdef __sun
! Note that you do not have to link with libthread to call thr_yield,
! as libc provides a stub, which is overloaded the moment you link
! with *either* libpthread or libthread...
#define YIELD_CPU thr_yield
#else
! applies at least to Linux and FreeBSD... Feedback expected...
#define YIELD_CPU sched_yield
#endif
.spin: call YIELD_CPU
nop
.enter: ld [%i0],%i2
cmp %i2,-4096
be .spin
mov -1,%i2
swap [%i0],%i2
cmp %i2,-1
be .spin
add %i2,%i1,%i2
stbar
st %i2,[%i0]
sra %i2,%g0,%i0
ret
restore
.v9:
#endif
ld [%o0],%o2
1: add %o1,%o2,%o3
.word 0xd7e2100a !cas [%o0],%o2,%o3, compare [%o0] with %o2 and swap %o3
cmp %o2,%o3
bne 1b
mov %o3,%o2 ! cas is always fetching to dest. register
add %o1,%o2,%o0 ! OpenSSL expects the new value
retl
sra %o0,%g0,%o0 ! we return signed int, remember?
.size OPENSSL_atomic_add,.-OPENSSL_atomic_add
.global _sparcv9_rdtick
.align 32
_sparcv9_rdtick:
subcc %g0,1,%o0
.word 0x91408000 !rd %ccr,%o0
cmp %o0,0x99
bne .notick
xor %o0,%o0,%o0
.word 0x91410000 !rd %tick,%o0
retl
.word 0x93323020 !srlx %o0,32,%o1
.notick:
retl
xor %o1,%o1,%o1
.type _sparcv9_rdtick,#function
.size _sparcv9_rdtick,.-_sparcv9_rdtick
.global _sparcv9_vis1_probe
.align 8
_sparcv9_vis1_probe:
.word 0x81b00d80 !fxor %f0,%f0,%f0
add %sp,BIAS+2,%o1
retl
.word 0xc19a5a40 !ldda [%o1]ASI_FP16_P,%f0
.type _sparcv9_vis1_probe,#function
.size _sparcv9_vis1_probe,.-_sparcv9_vis1_probe
! Probe and instrument VIS1 instruction. Output is number of cycles it
! takes to execute rdtick and pair of VIS1 instructions. US-Tx VIS unit
! is slow (documented to be 6 cycles on T2) and the core is in-order
! single-issue, it should be possible to distinguish Tx reliably...
! Observed return values are:
!
! UltraSPARC IIe 7
! UltraSPARC III 7
! UltraSPARC T1 24
!
! Numbers for T2 and SPARC64 V-VII are more than welcomed.
!
! It would be possible to detect specifically US-T1 by instrumenting
! fmul8ulx16, which is emulated on T1 and as such accounts for quite
! a lot of %tick-s, couple of thousand on Linux...
.global _sparcv9_vis1_instrument
.align 8
_sparcv9_vis1_instrument:
.word 0x91410000 !rd %tick,%o0
.word 0x81b00d80 !fxor %f0,%f0,%f0
.word 0x85b08d82 !fxor %f2,%f2,%f2
.word 0x93410000 !rd %tick,%o1
.word 0x81b00d80 !fxor %f0,%f0,%f0
.word 0x85b08d82 !fxor %f2,%f2,%f2
.word 0x95410000 !rd %tick,%o2
.word 0x81b00d80 !fxor %f0,%f0,%f0
.word 0x85b08d82 !fxor %f2,%f2,%f2
.word 0x97410000 !rd %tick,%o3
.word 0x81b00d80 !fxor %f0,%f0,%f0
.word 0x85b08d82 !fxor %f2,%f2,%f2
.word 0x99410000 !rd %tick,%o4
! calculate intervals
sub %o1,%o0,%o0
sub %o2,%o1,%o1
sub %o3,%o2,%o2
sub %o4,%o3,%o3
! find minumum value
cmp %o0,%o1
.word 0x38680002 !bgu,a %xcc,.+8
mov %o1,%o0
cmp %o0,%o2
.word 0x38680002 !bgu,a %xcc,.+8
mov %o2,%o0
cmp %o0,%o3
.word 0x38680002 !bgu,a %xcc,.+8
mov %o3,%o0
retl
nop
.type _sparcv9_vis1_instrument,#function
.size _sparcv9_vis1_instrument,.-_sparcv9_vis1_instrument
.global _sparcv9_vis2_probe
.align 8
_sparcv9_vis2_probe:
retl
.word 0x81b00980 !bshuffle %f0,%f0,%f0
.type _sparcv9_vis2_probe,#function
.size _sparcv9_vis2_probe,.-_sparcv9_vis2_probe
.global _sparcv9_fmadd_probe
.align 8
_sparcv9_fmadd_probe:
.word 0x81b00d80 !fxor %f0,%f0,%f0
.word 0x85b08d82 !fxor %f2,%f2,%f2
retl
.word 0x81b80440 !fmaddd %f0,%f0,%f2,%f0
.type _sparcv9_fmadd_probe,#function
.size _sparcv9_fmadd_probe,.-_sparcv9_fmadd_probe
.global OPENSSL_cleanse
.align 32
OPENSSL_cleanse:
cmp %o1,14
nop
#ifdef ABI64
bgu %xcc,.Lot
#else
bgu .Lot
#endif
cmp %o1,0
bne .Little
nop
retl
nop
.Little:
stb %g0,[%o0]
subcc %o1,1,%o1
bnz .Little
add %o0,1,%o0
retl
nop
.align 32
.Lot:
#ifndef ABI64
subcc %g0,1,%g1
! see above for explanation
.word 0x83408000 !rd %ccr,%g1
cmp %g1,0x99
bne .v8lot
nop
#endif
.v9lot: andcc %o0,7,%g0
bz .v9aligned
nop
stb %g0,[%o0]
sub %o1,1,%o1
ba .v9lot
add %o0,1,%o0
.align 16,0x01000000
.v9aligned:
.word 0xc0720000 !stx %g0,[%o0]
sub %o1,8,%o1
andcc %o1,-8,%g0
#ifdef ABI64
.word 0x126ffffd !bnz %xcc,.v9aligned
#else
.word 0x124ffffd !bnz %icc,.v9aligned
#endif
add %o0,8,%o0
cmp %o1,0
bne .Little
nop
retl
nop
#ifndef ABI64
.v8lot: andcc %o0,3,%g0
bz .v8aligned
nop
stb %g0,[%o0]
sub %o1,1,%o1
ba .v8lot
add %o0,1,%o0
nop
.v8aligned:
st %g0,[%o0]
sub %o1,4,%o1
andcc %o1,-4,%g0
bnz .v8aligned
add %o0,4,%o0
cmp %o1,0
bne .Little
nop
retl
nop
#endif
.type OPENSSL_cleanse,#function
.size OPENSSL_cleanse,.-OPENSSL_cleanse
.section ".init",#alloc,#execinstr
call OPENSSL_cpuid_setup
nop
|
