x86_64-gcc.c revision 656d9c7f52f88b3a3daccafa7655dec086c4756e
1#ifdef __SUNPRO_C 2# include "../bn_asm.c" /* kind of dirty hack for Sun Studio */ 3#else 4/* 5 * x86_64 BIGNUM accelerator version 0.1, December 2002. 6 * 7 * Implemented by Andy Polyakov <appro@fy.chalmers.se> for the OpenSSL 8 * project. 9 * 10 * Rights for redistribution and usage in source and binary forms are 11 * granted according to the OpenSSL license. Warranty of any kind is 12 * disclaimed. 13 * 14 * Q. Version 0.1? It doesn't sound like Andy, he used to assign real 15 * versions, like 1.0... 16 * A. Well, that's because this code is basically a quick-n-dirty 17 * proof-of-concept hack. As you can see it's implemented with 18 * inline assembler, which means that you're bound to GCC and that 19 * there might be enough room for further improvement. 20 * 21 * Q. Why inline assembler? 22 * A. x86_64 features own ABI which I'm not familiar with. This is 23 * why I decided to let the compiler take care of subroutine 24 * prologue/epilogue as well as register allocation. For reference. 25 * Win64 implements different ABI for AMD64, different from Linux. 26 * 27 * Q. How much faster does it get? 28 * A. 'apps/openssl speed rsa dsa' output with no-asm: 29 * 30 * sign verify sign/s verify/s 31 * rsa 512 bits 0.0006s 0.0001s 1683.8 18456.2 32 * rsa 1024 bits 0.0028s 0.0002s 356.0 6407.0 33 * rsa 2048 bits 0.0172s 0.0005s 58.0 1957.8 34 * rsa 4096 bits 0.1155s 0.0018s 8.7 555.6 35 * sign verify sign/s verify/s 36 * dsa 512 bits 0.0005s 0.0006s 2100.8 1768.3 37 * dsa 1024 bits 0.0014s 0.0018s 692.3 559.2 38 * dsa 2048 bits 0.0049s 0.0061s 204.7 165.0 39 * 40 * 'apps/openssl speed rsa dsa' output with this module: 41 * 42 * sign verify sign/s verify/s 43 * rsa 512 bits 0.0004s 0.0000s 2767.1 33297.9 44 * rsa 1024 bits 0.0012s 0.0001s 867.4 14674.7 45 * rsa 2048 bits 0.0061s 0.0002s 164.0 5270.0 46 * rsa 4096 bits 0.0384s 0.0006s 26.1 1650.8 47 * sign verify sign/s verify/s 48 * dsa 512 bits 0.0002s 0.0003s 4442.2 3786.3 49 * dsa 1024 bits 0.0005s 0.0007s 1835.1 1497.4 50 * dsa 2048 bits 0.0016s 0.0020s 620.4 504.6 51 * 52 * For the reference. IA-32 assembler implementation performs 53 * very much like 64-bit code compiled with no-asm on the same 54 * machine. 55 */ 56 57#define BN_ULONG unsigned long 58 59/* 60 * "m"(a), "+m"(r) is the way to favor DirectPath �-code; 61 * "g"(0) let the compiler to decide where does it 62 * want to keep the value of zero; 63 */ 64#define mul_add(r,a,word,carry) do { \ 65 register BN_ULONG high,low; \ 66 asm ("mulq %3" \ 67 : "=a"(low),"=d"(high) \ 68 : "a"(word),"m"(a) \ 69 : "cc"); \ 70 asm ("addq %2,%0; adcq %3,%1" \ 71 : "+r"(carry),"+d"(high)\ 72 : "a"(low),"g"(0) \ 73 : "cc"); \ 74 asm ("addq %2,%0; adcq %3,%1" \ 75 : "+m"(r),"+d"(high) \ 76 : "r"(carry),"g"(0) \ 77 : "cc"); \ 78 carry=high; \ 79 } while (0) 80 81#define mul(r,a,word,carry) do { \ 82 register BN_ULONG high,low; \ 83 asm ("mulq %3" \ 84 : "=a"(low),"=d"(high) \ 85 : "a"(word),"g"(a) \ 86 : "cc"); \ 87 asm ("addq %2,%0; adcq %3,%1" \ 88 : "+r"(carry),"+d"(high)\ 89 : "a"(low),"g"(0) \ 90 : "cc"); \ 91 (r)=carry, carry=high; \ 92 } while (0) 93 94#define sqr(r0,r1,a) \ 95 asm ("mulq %2" \ 96 : "=a"(r0),"=d"(r1) \ 97 : "a"(a) \ 98 : "cc"); 99 100BN_ULONG bn_mul_add_words(BN_ULONG *rp, BN_ULONG *ap, int num, BN_ULONG w) 101 { 102 BN_ULONG c1=0; 103 104 if (num <= 0) return(c1); 105 106 while (num&~3) 107 { 108 mul_add(rp[0],ap[0],w,c1); 109 mul_add(rp[1],ap[1],w,c1); 110 mul_add(rp[2],ap[2],w,c1); 111 mul_add(rp[3],ap[3],w,c1); 112 ap+=4; rp+=4; num-=4; 113 } 114 if (num) 115 { 116 mul_add(rp[0],ap[0],w,c1); if (--num==0) return c1; 117 mul_add(rp[1],ap[1],w,c1); if (--num==0) return c1; 118 mul_add(rp[2],ap[2],w,c1); return c1; 119 } 120 121 return(c1); 122 } 123 124BN_ULONG bn_mul_words(BN_ULONG *rp, BN_ULONG *ap, int num, BN_ULONG w) 125 { 126 BN_ULONG c1=0; 127 128 if (num <= 0) return(c1); 129 130 while (num&~3) 131 { 132 mul(rp[0],ap[0],w,c1); 133 mul(rp[1],ap[1],w,c1); 134 mul(rp[2],ap[2],w,c1); 135 mul(rp[3],ap[3],w,c1); 136 ap+=4; rp+=4; num-=4; 137 } 138 if (num) 139 { 140 mul(rp[0],ap[0],w,c1); if (--num == 0) return c1; 141 mul(rp[1],ap[1],w,c1); if (--num == 0) return c1; 142 mul(rp[2],ap[2],w,c1); 143 } 144 return(c1); 145 } 146 147void bn_sqr_words(BN_ULONG *r, BN_ULONG *a, int n) 148 { 149 if (n <= 0) return; 150 151 while (n&~3) 152 { 153 sqr(r[0],r[1],a[0]); 154 sqr(r[2],r[3],a[1]); 155 sqr(r[4],r[5],a[2]); 156 sqr(r[6],r[7],a[3]); 157 a+=4; r+=8; n-=4; 158 } 159 if (n) 160 { 161 sqr(r[0],r[1],a[0]); if (--n == 0) return; 162 sqr(r[2],r[3],a[1]); if (--n == 0) return; 163 sqr(r[4],r[5],a[2]); 164 } 165 } 166 167BN_ULONG bn_div_words(BN_ULONG h, BN_ULONG l, BN_ULONG d) 168{ BN_ULONG ret,waste; 169 170 asm ("divq %4" 171 : "=a"(ret),"=d"(waste) 172 : "a"(l),"d"(h),"g"(d) 173 : "cc"); 174 175 return ret; 176} 177 178BN_ULONG bn_add_words (BN_ULONG *rp, BN_ULONG *ap, BN_ULONG *bp,int n) 179{ BN_ULONG ret=0,i=0; 180 181 if (n <= 0) return 0; 182 183 asm ( 184 " subq %2,%2 \n" 185 ".align 16 \n" 186 "1: movq (%4,%2,8),%0 \n" 187 " adcq (%5,%2,8),%0 \n" 188 " movq %0,(%3,%2,8) \n" 189 " leaq 1(%2),%2 \n" 190 " loop 1b \n" 191 " sbbq %0,%0 \n" 192 : "=&a"(ret),"+c"(n),"=&r"(i) 193 : "r"(rp),"r"(ap),"r"(bp) 194 : "cc" 195 ); 196 197 return ret&1; 198} 199 200#ifndef SIMICS 201BN_ULONG bn_sub_words (BN_ULONG *rp, BN_ULONG *ap, BN_ULONG *bp,int n) 202{ BN_ULONG ret=0,i=0; 203 204 if (n <= 0) return 0; 205 206 asm ( 207 " subq %2,%2 \n" 208 ".align 16 \n" 209 "1: movq (%4,%2,8),%0 \n" 210 " sbbq (%5,%2,8),%0 \n" 211 " movq %0,(%3,%2,8) \n" 212 " leaq 1(%2),%2 \n" 213 " loop 1b \n" 214 " sbbq %0,%0 \n" 215 : "=&a"(ret),"+c"(n),"=&r"(i) 216 : "r"(rp),"r"(ap),"r"(bp) 217 : "cc" 218 ); 219 220 return ret&1; 221} 222#else 223/* Simics 1.4<7 has buggy sbbq:-( */ 224#define BN_MASK2 0xffffffffffffffffL 225BN_ULONG bn_sub_words(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b, int n) 226 { 227 BN_ULONG t1,t2; 228 int c=0; 229 230 if (n <= 0) return((BN_ULONG)0); 231 232 for (;;) 233 { 234 t1=a[0]; t2=b[0]; 235 r[0]=(t1-t2-c)&BN_MASK2; 236 if (t1 != t2) c=(t1 < t2); 237 if (--n <= 0) break; 238 239 t1=a[1]; t2=b[1]; 240 r[1]=(t1-t2-c)&BN_MASK2; 241 if (t1 != t2) c=(t1 < t2); 242 if (--n <= 0) break; 243 244 t1=a[2]; t2=b[2]; 245 r[2]=(t1-t2-c)&BN_MASK2; 246 if (t1 != t2) c=(t1 < t2); 247 if (--n <= 0) break; 248 249 t1=a[3]; t2=b[3]; 250 r[3]=(t1-t2-c)&BN_MASK2; 251 if (t1 != t2) c=(t1 < t2); 252 if (--n <= 0) break; 253 254 a+=4; 255 b+=4; 256 r+=4; 257 } 258 return(c); 259 } 260#endif 261 262/* mul_add_c(a,b,c0,c1,c2) -- c+=a*b for three word number c=(c2,c1,c0) */ 263/* mul_add_c2(a,b,c0,c1,c2) -- c+=2*a*b for three word number c=(c2,c1,c0) */ 264/* sqr_add_c(a,i,c0,c1,c2) -- c+=a[i]^2 for three word number c=(c2,c1,c0) */ 265/* sqr_add_c2(a,i,c0,c1,c2) -- c+=2*a[i]*a[j] for three word number c=(c2,c1,c0) */ 266 267#if 0 268/* original macros are kept for reference purposes */ 269#define mul_add_c(a,b,c0,c1,c2) { \ 270 BN_ULONG ta=(a),tb=(b); \ 271 t1 = ta * tb; \ 272 t2 = BN_UMULT_HIGH(ta,tb); \ 273 c0 += t1; t2 += (c0<t1)?1:0; \ 274 c1 += t2; c2 += (c1<t2)?1:0; \ 275 } 276 277#define mul_add_c2(a,b,c0,c1,c2) { \ 278 BN_ULONG ta=(a),tb=(b),t0; \ 279 t1 = BN_UMULT_HIGH(ta,tb); \ 280 t0 = ta * tb; \ 281 t2 = t1+t1; c2 += (t2<t1)?1:0; \ 282 t1 = t0+t0; t2 += (t1<t0)?1:0; \ 283 c0 += t1; t2 += (c0<t1)?1:0; \ 284 c1 += t2; c2 += (c1<t2)?1:0; \ 285 } 286#else 287#define mul_add_c(a,b,c0,c1,c2) do { \ 288 asm ("mulq %3" \ 289 : "=a"(t1),"=d"(t2) \ 290 : "a"(a),"m"(b) \ 291 : "cc"); \ 292 asm ("addq %2,%0; adcq %3,%1" \ 293 : "+r"(c0),"+d"(t2) \ 294 : "a"(t1),"g"(0) \ 295 : "cc"); \ 296 asm ("addq %2,%0; adcq %3,%1" \ 297 : "+r"(c1),"+r"(c2) \ 298 : "d"(t2),"g"(0) \ 299 : "cc"); \ 300 } while (0) 301 302#define sqr_add_c(a,i,c0,c1,c2) do { \ 303 asm ("mulq %2" \ 304 : "=a"(t1),"=d"(t2) \ 305 : "a"(a[i]) \ 306 : "cc"); \ 307 asm ("addq %2,%0; adcq %3,%1" \ 308 : "+r"(c0),"+d"(t2) \ 309 : "a"(t1),"g"(0) \ 310 : "cc"); \ 311 asm ("addq %2,%0; adcq %3,%1" \ 312 : "+r"(c1),"+r"(c2) \ 313 : "d"(t2),"g"(0) \ 314 : "cc"); \ 315 } while (0) 316 317#define mul_add_c2(a,b,c0,c1,c2) do { \ 318 asm ("mulq %3" \ 319 : "=a"(t1),"=d"(t2) \ 320 : "a"(a),"m"(b) \ 321 : "cc"); \ 322 asm ("addq %0,%0; adcq %2,%1" \ 323 : "+d"(t2),"+r"(c2) \ 324 : "g"(0) \ 325 : "cc"); \ 326 asm ("addq %0,%0; adcq %2,%1" \ 327 : "+a"(t1),"+d"(t2) \ 328 : "g"(0) \ 329 : "cc"); \ 330 asm ("addq %2,%0; adcq %3,%1" \ 331 : "+r"(c0),"+d"(t2) \ 332 : "a"(t1),"g"(0) \ 333 : "cc"); \ 334 asm ("addq %2,%0; adcq %3,%1" \ 335 : "+r"(c1),"+r"(c2) \ 336 : "d"(t2),"g"(0) \ 337 : "cc"); \ 338 } while (0) 339#endif 340 341#define sqr_add_c2(a,i,j,c0,c1,c2) \ 342 mul_add_c2((a)[i],(a)[j],c0,c1,c2) 343 344void bn_mul_comba8(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b) 345 { 346 BN_ULONG t1,t2; 347 BN_ULONG c1,c2,c3; 348 349 c1=0; 350 c2=0; 351 c3=0; 352 mul_add_c(a[0],b[0],c1,c2,c3); 353 r[0]=c1; 354 c1=0; 355 mul_add_c(a[0],b[1],c2,c3,c1); 356 mul_add_c(a[1],b[0],c2,c3,c1); 357 r[1]=c2; 358 c2=0; 359 mul_add_c(a[2],b[0],c3,c1,c2); 360 mul_add_c(a[1],b[1],c3,c1,c2); 361 mul_add_c(a[0],b[2],c3,c1,c2); 362 r[2]=c3; 363 c3=0; 364 mul_add_c(a[0],b[3],c1,c2,c3); 365 mul_add_c(a[1],b[2],c1,c2,c3); 366 mul_add_c(a[2],b[1],c1,c2,c3); 367 mul_add_c(a[3],b[0],c1,c2,c3); 368 r[3]=c1; 369 c1=0; 370 mul_add_c(a[4],b[0],c2,c3,c1); 371 mul_add_c(a[3],b[1],c2,c3,c1); 372 mul_add_c(a[2],b[2],c2,c3,c1); 373 mul_add_c(a[1],b[3],c2,c3,c1); 374 mul_add_c(a[0],b[4],c2,c3,c1); 375 r[4]=c2; 376 c2=0; 377 mul_add_c(a[0],b[5],c3,c1,c2); 378 mul_add_c(a[1],b[4],c3,c1,c2); 379 mul_add_c(a[2],b[3],c3,c1,c2); 380 mul_add_c(a[3],b[2],c3,c1,c2); 381 mul_add_c(a[4],b[1],c3,c1,c2); 382 mul_add_c(a[5],b[0],c3,c1,c2); 383 r[5]=c3; 384 c3=0; 385 mul_add_c(a[6],b[0],c1,c2,c3); 386 mul_add_c(a[5],b[1],c1,c2,c3); 387 mul_add_c(a[4],b[2],c1,c2,c3); 388 mul_add_c(a[3],b[3],c1,c2,c3); 389 mul_add_c(a[2],b[4],c1,c2,c3); 390 mul_add_c(a[1],b[5],c1,c2,c3); 391 mul_add_c(a[0],b[6],c1,c2,c3); 392 r[6]=c1; 393 c1=0; 394 mul_add_c(a[0],b[7],c2,c3,c1); 395 mul_add_c(a[1],b[6],c2,c3,c1); 396 mul_add_c(a[2],b[5],c2,c3,c1); 397 mul_add_c(a[3],b[4],c2,c3,c1); 398 mul_add_c(a[4],b[3],c2,c3,c1); 399 mul_add_c(a[5],b[2],c2,c3,c1); 400 mul_add_c(a[6],b[1],c2,c3,c1); 401 mul_add_c(a[7],b[0],c2,c3,c1); 402 r[7]=c2; 403 c2=0; 404 mul_add_c(a[7],b[1],c3,c1,c2); 405 mul_add_c(a[6],b[2],c3,c1,c2); 406 mul_add_c(a[5],b[3],c3,c1,c2); 407 mul_add_c(a[4],b[4],c3,c1,c2); 408 mul_add_c(a[3],b[5],c3,c1,c2); 409 mul_add_c(a[2],b[6],c3,c1,c2); 410 mul_add_c(a[1],b[7],c3,c1,c2); 411 r[8]=c3; 412 c3=0; 413 mul_add_c(a[2],b[7],c1,c2,c3); 414 mul_add_c(a[3],b[6],c1,c2,c3); 415 mul_add_c(a[4],b[5],c1,c2,c3); 416 mul_add_c(a[5],b[4],c1,c2,c3); 417 mul_add_c(a[6],b[3],c1,c2,c3); 418 mul_add_c(a[7],b[2],c1,c2,c3); 419 r[9]=c1; 420 c1=0; 421 mul_add_c(a[7],b[3],c2,c3,c1); 422 mul_add_c(a[6],b[4],c2,c3,c1); 423 mul_add_c(a[5],b[5],c2,c3,c1); 424 mul_add_c(a[4],b[6],c2,c3,c1); 425 mul_add_c(a[3],b[7],c2,c3,c1); 426 r[10]=c2; 427 c2=0; 428 mul_add_c(a[4],b[7],c3,c1,c2); 429 mul_add_c(a[5],b[6],c3,c1,c2); 430 mul_add_c(a[6],b[5],c3,c1,c2); 431 mul_add_c(a[7],b[4],c3,c1,c2); 432 r[11]=c3; 433 c3=0; 434 mul_add_c(a[7],b[5],c1,c2,c3); 435 mul_add_c(a[6],b[6],c1,c2,c3); 436 mul_add_c(a[5],b[7],c1,c2,c3); 437 r[12]=c1; 438 c1=0; 439 mul_add_c(a[6],b[7],c2,c3,c1); 440 mul_add_c(a[7],b[6],c2,c3,c1); 441 r[13]=c2; 442 c2=0; 443 mul_add_c(a[7],b[7],c3,c1,c2); 444 r[14]=c3; 445 r[15]=c1; 446 } 447 448void bn_mul_comba4(BN_ULONG *r, BN_ULONG *a, BN_ULONG *b) 449 { 450 BN_ULONG t1,t2; 451 BN_ULONG c1,c2,c3; 452 453 c1=0; 454 c2=0; 455 c3=0; 456 mul_add_c(a[0],b[0],c1,c2,c3); 457 r[0]=c1; 458 c1=0; 459 mul_add_c(a[0],b[1],c2,c3,c1); 460 mul_add_c(a[1],b[0],c2,c3,c1); 461 r[1]=c2; 462 c2=0; 463 mul_add_c(a[2],b[0],c3,c1,c2); 464 mul_add_c(a[1],b[1],c3,c1,c2); 465 mul_add_c(a[0],b[2],c3,c1,c2); 466 r[2]=c3; 467 c3=0; 468 mul_add_c(a[0],b[3],c1,c2,c3); 469 mul_add_c(a[1],b[2],c1,c2,c3); 470 mul_add_c(a[2],b[1],c1,c2,c3); 471 mul_add_c(a[3],b[0],c1,c2,c3); 472 r[3]=c1; 473 c1=0; 474 mul_add_c(a[3],b[1],c2,c3,c1); 475 mul_add_c(a[2],b[2],c2,c3,c1); 476 mul_add_c(a[1],b[3],c2,c3,c1); 477 r[4]=c2; 478 c2=0; 479 mul_add_c(a[2],b[3],c3,c1,c2); 480 mul_add_c(a[3],b[2],c3,c1,c2); 481 r[5]=c3; 482 c3=0; 483 mul_add_c(a[3],b[3],c1,c2,c3); 484 r[6]=c1; 485 r[7]=c2; 486 } 487 488void bn_sqr_comba8(BN_ULONG *r, BN_ULONG *a) 489 { 490 BN_ULONG t1,t2; 491 BN_ULONG c1,c2,c3; 492 493 c1=0; 494 c2=0; 495 c3=0; 496 sqr_add_c(a,0,c1,c2,c3); 497 r[0]=c1; 498 c1=0; 499 sqr_add_c2(a,1,0,c2,c3,c1); 500 r[1]=c2; 501 c2=0; 502 sqr_add_c(a,1,c3,c1,c2); 503 sqr_add_c2(a,2,0,c3,c1,c2); 504 r[2]=c3; 505 c3=0; 506 sqr_add_c2(a,3,0,c1,c2,c3); 507 sqr_add_c2(a,2,1,c1,c2,c3); 508 r[3]=c1; 509 c1=0; 510 sqr_add_c(a,2,c2,c3,c1); 511 sqr_add_c2(a,3,1,c2,c3,c1); 512 sqr_add_c2(a,4,0,c2,c3,c1); 513 r[4]=c2; 514 c2=0; 515 sqr_add_c2(a,5,0,c3,c1,c2); 516 sqr_add_c2(a,4,1,c3,c1,c2); 517 sqr_add_c2(a,3,2,c3,c1,c2); 518 r[5]=c3; 519 c3=0; 520 sqr_add_c(a,3,c1,c2,c3); 521 sqr_add_c2(a,4,2,c1,c2,c3); 522 sqr_add_c2(a,5,1,c1,c2,c3); 523 sqr_add_c2(a,6,0,c1,c2,c3); 524 r[6]=c1; 525 c1=0; 526 sqr_add_c2(a,7,0,c2,c3,c1); 527 sqr_add_c2(a,6,1,c2,c3,c1); 528 sqr_add_c2(a,5,2,c2,c3,c1); 529 sqr_add_c2(a,4,3,c2,c3,c1); 530 r[7]=c2; 531 c2=0; 532 sqr_add_c(a,4,c3,c1,c2); 533 sqr_add_c2(a,5,3,c3,c1,c2); 534 sqr_add_c2(a,6,2,c3,c1,c2); 535 sqr_add_c2(a,7,1,c3,c1,c2); 536 r[8]=c3; 537 c3=0; 538 sqr_add_c2(a,7,2,c1,c2,c3); 539 sqr_add_c2(a,6,3,c1,c2,c3); 540 sqr_add_c2(a,5,4,c1,c2,c3); 541 r[9]=c1; 542 c1=0; 543 sqr_add_c(a,5,c2,c3,c1); 544 sqr_add_c2(a,6,4,c2,c3,c1); 545 sqr_add_c2(a,7,3,c2,c3,c1); 546 r[10]=c2; 547 c2=0; 548 sqr_add_c2(a,7,4,c3,c1,c2); 549 sqr_add_c2(a,6,5,c3,c1,c2); 550 r[11]=c3; 551 c3=0; 552 sqr_add_c(a,6,c1,c2,c3); 553 sqr_add_c2(a,7,5,c1,c2,c3); 554 r[12]=c1; 555 c1=0; 556 sqr_add_c2(a,7,6,c2,c3,c1); 557 r[13]=c2; 558 c2=0; 559 sqr_add_c(a,7,c3,c1,c2); 560 r[14]=c3; 561 r[15]=c1; 562 } 563 564void bn_sqr_comba4(BN_ULONG *r, BN_ULONG *a) 565 { 566 BN_ULONG t1,t2; 567 BN_ULONG c1,c2,c3; 568 569 c1=0; 570 c2=0; 571 c3=0; 572 sqr_add_c(a,0,c1,c2,c3); 573 r[0]=c1; 574 c1=0; 575 sqr_add_c2(a,1,0,c2,c3,c1); 576 r[1]=c2; 577 c2=0; 578 sqr_add_c(a,1,c3,c1,c2); 579 sqr_add_c2(a,2,0,c3,c1,c2); 580 r[2]=c3; 581 c3=0; 582 sqr_add_c2(a,3,0,c1,c2,c3); 583 sqr_add_c2(a,2,1,c1,c2,c3); 584 r[3]=c1; 585 c1=0; 586 sqr_add_c(a,2,c2,c3,c1); 587 sqr_add_c2(a,3,1,c2,c3,c1); 588 r[4]=c2; 589 c2=0; 590 sqr_add_c2(a,3,2,c3,c1,c2); 591 r[5]=c3; 592 c3=0; 593 sqr_add_c(a,3,c1,c2,c3); 594 r[6]=c1; 595 r[7]=c2; 596 } 597#endif 598