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-rw-r--r--src/lib/libcrypto/bn/asm/mips1.s539
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diff --git a/src/lib/libcrypto/bn/asm/mips1.s b/src/lib/libcrypto/bn/asm/mips1.s
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1/* This assember is for R2000/R3000 machines, or higher ones that do
2 * no want to do any 64 bit arithmatic.
3 * Make sure that the SSLeay bignum library is compiled with
4 * THIRTY_TWO_BIT set.
5 * This must either be compiled with the system CC, or, if you use GNU gas,
6 * cc -E mips1.s|gas -o mips1.o
7 */
8 .set reorder
9 .set noat
10
11#define R1 $1
12#define CC $2
13#define R2 $3
14#define R3 $8
15#define R4 $9
16#define L1 $10
17#define L2 $11
18#define L3 $12
19#define L4 $13
20#define H1 $14
21#define H2 $15
22#define H3 $24
23#define H4 $25
24
25#define P1 $4
26#define P2 $5
27#define P3 $6
28#define P4 $7
29
30 .align 2
31 .ent bn_mul_add_words
32 .globl bn_mul_add_words
33.text
34bn_mul_add_words:
35 .frame $sp,0,$31
36 .mask 0x00000000,0
37 .fmask 0x00000000,0
38
39 #blt P3,4,$lab34
40
41 subu R1,P3,4
42 move CC,$0
43 bltz R1,$lab34
44$lab2:
45 lw R1,0(P1)
46 lw L1,0(P2)
47 lw R2,4(P1)
48 lw L2,4(P2)
49 lw R3,8(P1)
50 lw L3,8(P2)
51 lw R4,12(P1)
52 lw L4,12(P2)
53 multu L1,P4
54 addu R1,R1,CC
55 mflo L1
56 sltu CC,R1,CC
57 addu R1,R1,L1
58 mfhi H1
59 sltu L1,R1,L1
60 sw R1,0(P1)
61 addu CC,CC,L1
62 multu L2,P4
63 addu CC,H1,CC
64 mflo L2
65 addu R2,R2,CC
66 sltu CC,R2,CC
67 mfhi H2
68 addu R2,R2,L2
69 addu P2,P2,16
70 sltu L2,R2,L2
71 sw R2,4(P1)
72 addu CC,CC,L2
73 multu L3,P4
74 addu CC,H2,CC
75 mflo L3
76 addu R3,R3,CC
77 sltu CC,R3,CC
78 mfhi H3
79 addu R3,R3,L3
80 addu P1,P1,16
81 sltu L3,R3,L3
82 sw R3,-8(P1)
83 addu CC,CC,L3
84 multu L4,P4
85 addu CC,H3,CC
86 mflo L4
87 addu R4,R4,CC
88 sltu CC,R4,CC
89 mfhi H4
90 addu R4,R4,L4
91 subu P3,P3,4
92 sltu L4,R4,L4
93 addu CC,CC,L4
94 addu CC,H4,CC
95
96 subu R1,P3,4
97 sw R4,-4(P1) # delay slot
98 bgez R1,$lab2
99
100 bleu P3,0,$lab3
101 .align 2
102$lab33:
103 lw L1,0(P2)
104 lw R1,0(P1)
105 multu L1,P4
106 addu R1,R1,CC
107 sltu CC,R1,CC
108 addu P1,P1,4
109 mflo L1
110 mfhi H1
111 addu R1,R1,L1
112 addu P2,P2,4
113 sltu L1,R1,L1
114 subu P3,P3,1
115 addu CC,CC,L1
116 sw R1,-4(P1)
117 addu CC,H1,CC
118 bgtz P3,$lab33
119 j $31
120 .align 2
121$lab3:
122 j $31
123 .align 2
124$lab34:
125 bgt P3,0,$lab33
126 j $31
127 .end bn_mul_add_words
128
129 .align 2
130 # Program Unit: bn_mul_words
131 .ent bn_mul_words
132 .globl bn_mul_words
133.text
134bn_mul_words:
135 .frame $sp,0,$31
136 .mask 0x00000000,0
137 .fmask 0x00000000,0
138
139 subu P3,P3,4
140 move CC,$0
141 bltz P3,$lab45
142$lab44:
143 lw L1,0(P2)
144 lw L2,4(P2)
145 lw L3,8(P2)
146 lw L4,12(P2)
147 multu L1,P4
148 subu P3,P3,4
149 mflo L1
150 mfhi H1
151 addu L1,L1,CC
152 multu L2,P4
153 sltu CC,L1,CC
154 sw L1,0(P1)
155 addu CC,H1,CC
156 mflo L2
157 mfhi H2
158 addu L2,L2,CC
159 multu L3,P4
160 sltu CC,L2,CC
161 sw L2,4(P1)
162 addu CC,H2,CC
163 mflo L3
164 mfhi H3
165 addu L3,L3,CC
166 multu L4,P4
167 sltu CC,L3,CC
168 sw L3,8(P1)
169 addu CC,H3,CC
170 mflo L4
171 mfhi H4
172 addu L4,L4,CC
173 addu P1,P1,16
174 sltu CC,L4,CC
175 addu P2,P2,16
176 addu CC,H4,CC
177 sw L4,-4(P1)
178
179 bgez P3,$lab44
180 b $lab45
181$lab46:
182 lw L1,0(P2)
183 addu P1,P1,4
184 multu L1,P4
185 addu P2,P2,4
186 mflo L1
187 mfhi H1
188 addu L1,L1,CC
189 subu P3,P3,1
190 sltu CC,L1,CC
191 sw L1,-4(P1)
192 addu CC,H1,CC
193 bgtz P3,$lab46
194 j $31
195$lab45:
196 addu P3,P3,4
197 bgtz P3,$lab46
198 j $31
199 .align 2
200 .end bn_mul_words
201
202 # Program Unit: bn_sqr_words
203 .ent bn_sqr_words
204 .globl bn_sqr_words
205.text
206bn_sqr_words:
207 .frame $sp,0,$31
208 .mask 0x00000000,0
209 .fmask 0x00000000,0
210
211 subu P3,P3,4
212 bltz P3,$lab55
213$lab54:
214 lw L1,0(P2)
215 lw L2,4(P2)
216 lw L3,8(P2)
217 lw L4,12(P2)
218
219 multu L1,L1
220 subu P3,P3,4
221 mflo L1
222 mfhi H1
223 sw L1,0(P1)
224 sw H1,4(P1)
225
226 multu L2,L2
227 addu P1,P1,32
228 mflo L2
229 mfhi H2
230 sw L2,-24(P1)
231 sw H2,-20(P1)
232
233 multu L3,L3
234 addu P2,P2,16
235 mflo L3
236 mfhi H3
237 sw L3,-16(P1)
238 sw H3,-12(P1)
239
240 multu L4,L4
241
242 mflo L4
243 mfhi H4
244 sw L4,-8(P1)
245 sw H4,-4(P1)
246
247 bgtz P3,$lab54
248 b $lab55
249$lab56:
250 lw L1,0(P2)
251 addu P1,P1,8
252 multu L1,L1
253 addu P2,P2,4
254 subu P3,P3,1
255 mflo L1
256 mfhi H1
257 sw L1,-8(P1)
258 sw H1,-4(P1)
259
260 bgtz P3,$lab56
261 j $31
262$lab55:
263 addu P3,P3,4
264 bgtz P3,$lab56
265 j $31
266 .align 2
267 .end bn_sqr_words
268
269 # Program Unit: bn_add_words
270 .ent bn_add_words
271 .globl bn_add_words
272.text
273bn_add_words: # 0x590
274 .frame $sp,0,$31
275 .mask 0x00000000,0
276 .fmask 0x00000000,0
277
278 subu P4,P4,4
279 move CC,$0
280 bltz P4,$lab65
281$lab64:
282 lw L1,0(P2)
283 lw R1,0(P3)
284 lw L2,4(P2)
285 lw R2,4(P3)
286
287 addu L1,L1,CC
288 lw L3,8(P2)
289 sltu CC,L1,CC
290 addu L1,L1,R1
291 sltu R1,L1,R1
292 lw R3,8(P3)
293 addu CC,CC,R1
294 lw L4,12(P2)
295
296 addu L2,L2,CC
297 lw R4,12(P3)
298 sltu CC,L2,CC
299 addu L2,L2,R2
300 sltu R2,L2,R2
301 sw L1,0(P1)
302 addu CC,CC,R2
303 addu P1,P1,16
304 addu L3,L3,CC
305 sw L2,-12(P1)
306
307 sltu CC,L3,CC
308 addu L3,L3,R3
309 sltu R3,L3,R3
310 addu P2,P2,16
311 addu CC,CC,R3
312
313 addu L4,L4,CC
314 addu P3,P3,16
315 sltu CC,L4,CC
316 addu L4,L4,R4
317 subu P4,P4,4
318 sltu R4,L4,R4
319 sw L3,-8(P1)
320 addu CC,CC,R4
321 sw L4,-4(P1)
322
323 bgtz P4,$lab64
324 b $lab65
325$lab66:
326 lw L1,0(P2)
327 lw R1,0(P3)
328 addu L1,L1,CC
329 addu P1,P1,4
330 sltu CC,L1,CC
331 addu P2,P2,4
332 addu P3,P3,4
333 addu L1,L1,R1
334 subu P4,P4,1
335 sltu R1,L1,R1
336 sw L1,-4(P1)
337 addu CC,CC,R1
338
339 bgtz P4,$lab66
340 j $31
341$lab65:
342 addu P4,P4,4
343 bgtz P4,$lab66
344 j $31
345 .end bn_add_words
346
347 # Program Unit: bn_div64
348 .set at
349 .set reorder
350 .text
351 .align 2
352 .globl bn_div64
353 # 321 {
354 .ent bn_div64 2
355bn_div64:
356 subu $sp, 64
357 sw $31, 56($sp)
358 sw $16, 48($sp)
359 .mask 0x80010000, -56
360 .frame $sp, 64, $31
361 move $9, $4
362 move $12, $5
363 move $16, $6
364 # 322 BN_ULONG dh,dl,q,ret=0,th,tl,t;
365 move $31, $0
366 # 323 int i,count=2;
367 li $13, 2
368 # 324
369 # 325 if (d == 0) return(BN_MASK2);
370 bne $16, 0, $80
371 li $2, -1
372 b $93
373$80:
374 # 326
375 # 327 i=BN_num_bits_word(d);
376 move $4, $16
377 sw $31, 16($sp)
378 sw $9, 24($sp)
379 sw $12, 32($sp)
380 sw $13, 40($sp)
381 .livereg 0x800ff0e,0xfff
382 jal BN_num_bits_word
383 li $4, 32
384 lw $31, 16($sp)
385 lw $9, 24($sp)
386 lw $12, 32($sp)
387 lw $13, 40($sp)
388 move $3, $2
389 # 328 if ((i != BN_BITS2) && (h > (BN_ULONG)1<<i))
390 beq $2, $4, $81
391 li $14, 1
392 sll $15, $14, $2
393 bleu $9, $15, $81
394 # 329 {
395 # 330 #if !defined(NO_STDIO) && !defined(WIN16)
396 # 331 fprintf(stderr,"Division would overflow (%d)\n",i);
397 # 332 #endif
398 # 333 abort();
399 sw $3, 8($sp)
400 sw $9, 24($sp)
401 sw $12, 32($sp)
402 sw $13, 40($sp)
403 sw $31, 26($sp)
404 .livereg 0xff0e,0xfff
405 jal abort
406 lw $3, 8($sp)
407 li $4, 32
408 lw $9, 24($sp)
409 lw $12, 32($sp)
410 lw $13, 40($sp)
411 lw $31, 26($sp)
412 # 334 }
413$81:
414 # 335 i=BN_BITS2-i;
415 subu $3, $4, $3
416 # 336 if (h >= d) h-=d;
417 bltu $9, $16, $82
418 subu $9, $9, $16
419$82:
420 # 337
421 # 338 if (i)
422 beq $3, 0, $83
423 # 339 {
424 # 340 d<<=i;
425 sll $16, $16, $3
426 # 341 h=(h<<i)|(l>>(BN_BITS2-i));
427 sll $24, $9, $3
428 subu $25, $4, $3
429 srl $14, $12, $25
430 or $9, $24, $14
431 # 342 l<<=i;
432 sll $12, $12, $3
433 # 343 }
434$83:
435 # 344 dh=(d&BN_MASK2h)>>BN_BITS4;
436 # 345 dl=(d&BN_MASK2l);
437 and $8, $16, -65536
438 srl $8, $8, 16
439 and $10, $16, 65535
440 li $6, -65536
441$84:
442 # 346 for (;;)
443 # 347 {
444 # 348 if ((h>>BN_BITS4) == dh)
445 srl $15, $9, 16
446 bne $8, $15, $85
447 # 349 q=BN_MASK2l;
448 li $5, 65535
449 b $86
450$85:
451 # 350 else
452 # 351 q=h/dh;
453 divu $5, $9, $8
454$86:
455 # 352
456 # 353 for (;;)
457 # 354 {
458 # 355 t=(h-q*dh);
459 mul $4, $5, $8
460 subu $2, $9, $4
461 move $3, $2
462 # 356 if ((t&BN_MASK2h) ||
463 # 357 ((dl*q) <= (
464 # 358 (t<<BN_BITS4)+
465 # 359 ((l&BN_MASK2h)>>BN_BITS4))))
466 and $25, $2, $6
467 bne $25, $0, $87
468 mul $24, $10, $5
469 sll $14, $3, 16
470 and $15, $12, $6
471 srl $25, $15, 16
472 addu $15, $14, $25
473 bgtu $24, $15, $88
474$87:
475 # 360 break;
476 mul $3, $10, $5
477 b $89
478$88:
479 # 361 q--;
480 addu $5, $5, -1
481 # 362 }
482 b $86
483$89:
484 # 363 th=q*dh;
485 # 364 tl=q*dl;
486 # 365 t=(tl>>BN_BITS4);
487 # 366 tl=(tl<<BN_BITS4)&BN_MASK2h;
488 sll $14, $3, 16
489 and $2, $14, $6
490 move $11, $2
491 # 367 th+=t;
492 srl $25, $3, 16
493 addu $7, $4, $25
494 # 368
495 # 369 if (l < tl) th++;
496 bgeu $12, $2, $90
497 addu $7, $7, 1
498$90:
499 # 370 l-=tl;
500 subu $12, $12, $11
501 # 371 if (h < th)
502 bgeu $9, $7, $91
503 # 372 {
504 # 373 h+=d;
505 addu $9, $9, $16
506 # 374 q--;
507 addu $5, $5, -1
508 # 375 }
509$91:
510 # 376 h-=th;
511 subu $9, $9, $7
512 # 377
513 # 378 if (--count == 0) break;
514 addu $13, $13, -1
515 beq $13, 0, $92
516 # 379
517 # 380 ret=q<<BN_BITS4;
518 sll $31, $5, 16
519 # 381 h=((h<<BN_BITS4)|(l>>BN_BITS4))&BN_MASK2;
520 sll $24, $9, 16
521 srl $15, $12, 16
522 or $9, $24, $15
523 # 382 l=(l&BN_MASK2l)<<BN_BITS4;
524 and $12, $12, 65535
525 sll $12, $12, 16
526 # 383 }
527 b $84
528$92:
529 # 384 ret|=q;
530 or $31, $31, $5
531 # 385 return(ret);
532 move $2, $31
533$93:
534 lw $16, 48($sp)
535 lw $31, 56($sp)
536 addu $sp, 64
537 j $31
538 .end bn_div64
539
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