1 #include "l.h" 2 3 long OFFSET; 4 /* 5 long BADOFFSET = -1; 6 7 if(OFFSET <= BADOFFSET && OFFSET+4 > BADOFFSET)\ 8 abort();\ 9 OFFSET += 4;\ 10 11 if(OFFSET == BADOFFSET)\ 12 abort();\ 13 OFFSET++;\ 14 */ 15 16 #define LPUT(c)\ 17 {\ 18 cbp[0] = (c)>>24;\ 19 cbp[1] = (c)>>16;\ 20 cbp[2] = (c)>>8;\ 21 cbp[3] = (c);\ 22 cbp += 4;\ 23 cbc -= 4;\ 24 if(cbc <= 0)\ 25 cflush();\ 26 } 27 28 #define CPUT(c)\ 29 {\ 30 cbp[0] = (c);\ 31 cbp++;\ 32 cbc--;\ 33 if(cbc <= 0)\ 34 cflush();\ 35 } 36 37 long 38 entryvalue(void) 39 { 40 char *a; 41 Sym *s; 42 43 a = INITENTRY; 44 if(*a >= '0' && *a <= '9') 45 return atolwhex(a); 46 s = lookup(a, 0); 47 if(s->type == 0) 48 return INITTEXT; 49 if(s->type != STEXT && s->type != SLEAF) 50 diag("entry not text: %s", s->name); 51 return s->value; 52 } 53 54 void 55 asmb(void) 56 { 57 Prog *p; 58 long t, etext; 59 Optab *o; 60 61 if(debug['v']) 62 Bprint(&bso, "%5.2f asm\n", cputime()); 63 Bflush(&bso); 64 OFFSET = HEADR; 65 seek(cout, OFFSET, 0); 66 pc = INITTEXT; 67 for(p = firstp; p != P; p = p->link) { 68 if(p->as == ATEXT) { 69 curtext = p; 70 autosize = p->to.offset + 4; 71 } 72 if(p->pc != pc) { 73 diag("phase error %lux sb %lux\n", 74 p->pc, pc); 75 if(!debug['a']) 76 prasm(curp); 77 pc = p->pc; 78 } 79 curp = p; 80 o = oplook(p); /* could probably avoid this call */ 81 if(asmout(p, o, 0)) { 82 p = p->link; 83 pc += 4; 84 } 85 pc += o->size; 86 } 87 if(debug['a']) 88 Bprint(&bso, "\n"); 89 Bflush(&bso); 90 cflush(); 91 92 etext = INITTEXT + textsize; 93 for(t = pc; t < etext; t += sizeof(buf)-100) { 94 if(etext-t > sizeof(buf)-100) 95 datblk(t, sizeof(buf)-100, 1); 96 else 97 datblk(t, etext-t, 1); 98 } 99 100 Bflush(&bso); 101 cflush(); 102 103 curtext = P; 104 switch(HEADTYPE) { 105 case 0: 106 case 4: 107 OFFSET = rnd(HEADR+textsize, 4096); 108 seek(cout, OFFSET, 0); 109 break; 110 case 1: 111 case 2: 112 case 3: 113 case 5: 114 OFFSET = HEADR+textsize; 115 seek(cout, OFFSET, 0); 116 break; 117 } 118 for(t = 0; t < datsize; t += sizeof(buf)-100) { 119 if(datsize-t > sizeof(buf)-100) 120 datblk(t, sizeof(buf)-100, 0); 121 else 122 datblk(t, datsize-t, 0); 123 } 124 125 symsize = 0; 126 lcsize = 0; 127 if(!debug['s']) { 128 if(debug['v']) 129 Bprint(&bso, "%5.2f sym\n", cputime()); 130 Bflush(&bso); 131 switch(HEADTYPE) { 132 case 0: 133 case 4: 134 OFFSET = rnd(HEADR+textsize, 4096)+datsize; 135 seek(cout, OFFSET, 0); 136 break; 137 case 3: 138 case 2: 139 case 1: 140 case 5: 141 OFFSET = HEADR+textsize+datsize; 142 seek(cout, OFFSET, 0); 143 break; 144 } 145 if(!debug['s']) 146 asmsym(); 147 if(debug['v']) 148 Bprint(&bso, "%5.2f pc\n", cputime()); 149 Bflush(&bso); 150 if(!debug['s']) 151 asmlc(); 152 cflush(); 153 } 154 155 if(debug['v']) 156 Bprint(&bso, "%5.2f header\n", cputime()); 157 Bflush(&bso); 158 OFFSET = 0; 159 seek(cout, OFFSET, 0); 160 switch(HEADTYPE) { 161 case 0: 162 lput(0x160L<<16); /* magic and sections */ 163 lput(0L); /* time and date */ 164 lput(rnd(HEADR+textsize, 4096)+datsize); 165 lput(symsize); /* nsyms */ 166 lput((0x38L<<16)|7L); /* size of optional hdr and flags */ 167 lput((0413<<16)|0437L); /* magic and version */ 168 lput(rnd(HEADR+textsize, 4096)); /* sizes */ 169 lput(datsize); 170 lput(bsssize); 171 lput(entryvalue()); /* va of entry */ 172 lput(INITTEXT-HEADR); /* va of base of text */ 173 lput(INITDAT); /* va of base of data */ 174 lput(INITDAT+datsize); /* va of base of bss */ 175 lput(~0L); /* gp reg mask */ 176 lput(0L); 177 lput(0L); 178 lput(0L); 179 lput(0L); 180 lput(~0L); /* gp value ?? */ 181 break; 182 case 1: 183 lput(0x160L<<16); /* magic and sections */ 184 lput(0L); /* time and date */ 185 lput(HEADR+textsize+datsize); 186 lput(symsize); /* nsyms */ 187 lput((0x38L<<16)|7L); /* size of optional hdr and flags */ 188 189 lput((0407<<16)|0437L); /* magic and version */ 190 lput(textsize); /* sizes */ 191 lput(datsize); 192 lput(bsssize); 193 lput(entryvalue()); /* va of entry */ 194 lput(INITTEXT); /* va of base of text */ 195 lput(INITDAT); /* va of base of data */ 196 lput(INITDAT+datsize); /* va of base of bss */ 197 lput(~0L); /* gp reg mask */ 198 lput(lcsize); 199 lput(0L); 200 lput(0L); 201 lput(0L); 202 lput(~0L); /* gp value ?? */ 203 lput(0L); /* complete mystery */ 204 break; 205 case 2: 206 lput(0x407); /* magic */ 207 lput(textsize); /* sizes */ 208 lput(datsize); 209 lput(bsssize); 210 lput(symsize); /* nsyms */ 211 lput(entryvalue()); /* va of entry */ 212 lput(0L); 213 lput(lcsize); 214 break; 215 case 3: 216 lput((0x160L<<16)|3L); /* magic and sections */ 217 lput(time(0)); /* time and date */ 218 lput(HEADR+textsize+datsize); 219 lput(symsize); /* nsyms */ 220 lput((0x38L<<16)|7L); /* size of optional hdr and flags */ 221 222 lput((0407<<16)|0437L); /* magic and version */ 223 lput(textsize); /* sizes */ 224 lput(datsize); 225 lput(bsssize); 226 lput(entryvalue()); /* va of entry */ 227 lput(INITTEXT); /* va of base of text */ 228 lput(INITDAT); /* va of base of data */ 229 lput(INITDAT+datsize); /* va of base of bss */ 230 lput(~0L); /* gp reg mask */ 231 lput(lcsize); 232 lput(0L); 233 lput(0L); 234 lput(0L); 235 lput(~0L); /* gp value ?? */ 236 237 strnput(".text", 8); /* text segment */ 238 lput(INITTEXT); /* address */ 239 lput(INITTEXT); 240 lput(textsize); 241 lput(HEADR); 242 lput(0L); 243 lput(HEADR+textsize+datsize+symsize); 244 lput(lcsize); /* line number size */ 245 lput(0x20L); /* flags */ 246 247 strnput(".data", 8); /* data segment */ 248 lput(INITDAT); /* address */ 249 lput(INITDAT); 250 lput(datsize); 251 lput(HEADR+textsize); 252 lput(0L); 253 lput(0L); 254 lput(0L); 255 lput(0x40L); /* flags */ 256 257 strnput(".bss", 8); /* bss segment */ 258 lput(INITDAT+datsize); /* address */ 259 lput(INITDAT+datsize); 260 lput(bsssize); 261 lput(0L); 262 lput(0L); 263 lput(0L); 264 lput(0L); 265 lput(0x80L); /* flags */ 266 break; 267 case 4: 268 269 lput((0x160L<<16)|3L); /* magic and sections */ 270 lput(time(0)); /* time and date */ 271 lput(rnd(HEADR+textsize, 4096)+datsize); 272 lput(symsize); /* nsyms */ 273 lput((0x38L<<16)|7L); /* size of optional hdr and flags */ 274 275 lput((0413<<16)|01012L); /* magic and version */ 276 lput(textsize); /* sizes */ 277 lput(datsize); 278 lput(bsssize); 279 lput(entryvalue()); /* va of entry */ 280 lput(INITTEXT); /* va of base of text */ 281 lput(INITDAT); /* va of base of data */ 282 lput(INITDAT+datsize); /* va of base of bss */ 283 lput(~0L); /* gp reg mask */ 284 lput(lcsize); 285 lput(0L); 286 lput(0L); 287 lput(0L); 288 lput(~0L); /* gp value ?? */ 289 290 strnput(".text", 8); /* text segment */ 291 lput(INITTEXT); /* address */ 292 lput(INITTEXT); 293 lput(textsize); 294 lput(HEADR); 295 lput(0L); 296 lput(HEADR+textsize+datsize+symsize); 297 lput(lcsize); /* line number size */ 298 lput(0x20L); /* flags */ 299 300 strnput(".data", 8); /* data segment */ 301 lput(INITDAT); /* address */ 302 lput(INITDAT); 303 lput(datsize); 304 lput(rnd(HEADR+textsize, 4096)); /* sizes */ 305 lput(0L); 306 lput(0L); 307 lput(0L); 308 lput(0x40L); /* flags */ 309 310 strnput(".bss", 8); /* bss segment */ 311 lput(INITDAT+datsize); /* address */ 312 lput(INITDAT+datsize); 313 lput(bsssize); 314 lput(0L); 315 lput(0L); 316 lput(0L); 317 lput(0L); 318 lput(0x80L); /* flags */ 319 break; 320 case 5: 321 strnput("\177ELF", 4); /* e_ident */ 322 CPUT(1); /* class = 32 bit */ 323 CPUT(2); /* data = MSB */ 324 CPUT(1); /* version = CURRENT */ 325 strnput("", 9); 326 lput((2L<<16)|8L); /* type = EXEC; machine = MIPS */ 327 lput(1L); /* version = CURRENT */ 328 lput(entryvalue()); /* entry vaddr */ 329 lput(52L); /* offset to first phdr */ 330 lput(0L); /* offset to first shdr */ 331 lput(0L); /* flags = MIPS */ 332 lput((52L<<16)|32L); /* Ehdr & Phdr sizes*/ 333 lput((3L<<16)|0L); /* # Phdrs & Shdr size */ 334 lput((0L<<16)|0L); /* # Shdrs & shdr string size */ 335 336 lput(1L); /* text - type = PT_LOAD */ 337 lput(0L); /* file offset */ 338 lput(INITTEXT-HEADR); /* vaddr */ 339 lput(INITTEXT-HEADR); /* paddr */ 340 lput(HEADR+textsize); /* file size */ 341 lput(HEADR+textsize); /* memory size */ 342 lput(0x05L); /* protections = RX */ 343 lput(0x10000L); /* alignment code?? */ 344 345 lput(1L); /* data - type = PT_LOAD */ 346 lput(HEADR+textsize); /* file offset */ 347 lput(INITDAT); /* vaddr */ 348 lput(INITDAT); /* paddr */ 349 lput(datsize); /* file size */ 350 lput(datsize+bsssize); /* memory size */ 351 lput(0x06L); /* protections = RW */ 352 lput(0x10000L); /* alignment code?? */ 353 354 lput(0L); /* data - type = PT_NULL */ 355 lput(HEADR+textsize+datsize); /* file offset */ 356 lput(0L); 357 lput(0L); 358 lput(symsize); /* symbol table size */ 359 lput(lcsize); /* line number size */ 360 lput(0x04L); /* protections = R */ 361 lput(0x04L); /* alignment code?? */ 362 } 363 cflush(); 364 } 365 366 void 367 strnput(char *s, int n) 368 { 369 for(; *s; s++){ 370 CPUT(*s); 371 n--; 372 } 373 for(; n > 0; n--) 374 CPUT(0); 375 } 376 377 void 378 lput(long l) 379 { 380 381 LPUT(l); 382 } 383 384 void 385 cflush(void) 386 { 387 int n; 388 389 n = sizeof(buf.cbuf) - cbc; 390 if(n) 391 write(cout, buf.cbuf, n); 392 cbp = buf.cbuf; 393 cbc = sizeof(buf.cbuf); 394 } 395 396 void 397 nopstat(char *f, Count *c) 398 { 399 if(c->outof) 400 Bprint(&bso, "%s delay %ld/%ld (%.2f)\n", f, 401 c->outof - c->count, c->outof, 402 (double)(c->outof - c->count)/c->outof); 403 } 404 405 void 406 asmsym(void) 407 { 408 Prog *p; 409 Auto *a; 410 Sym *s; 411 int h; 412 413 s = lookup("etext", 0); 414 if(s->type == STEXT) 415 putsymb(s->name, 'T', s->value, s->version); 416 417 for(h=0; h<NHASH; h++) 418 for(s=hash[h]; s!=S; s=s->link) 419 switch(s->type) { 420 case SCONST: 421 putsymb(s->name, 'D', s->value, s->version); 422 continue; 423 424 case SSTRING: 425 putsymb(s->name, 'T', s->value, s->version); 426 continue; 427 428 case SDATA: 429 putsymb(s->name, 'D', s->value+INITDAT, s->version); 430 continue; 431 432 case SBSS: 433 putsymb(s->name, 'B', s->value+INITDAT, s->version); 434 continue; 435 436 case SFILE: 437 putsymb(s->name, 'f', s->value, s->version); 438 continue; 439 } 440 441 for(p=textp; p!=P; p=p->cond) { 442 s = p->from.sym; 443 if(s->type != STEXT && s->type != SLEAF) 444 continue; 445 446 /* filenames first */ 447 for(a=p->to.autom; a; a=a->link) 448 if(a->type == D_FILE) 449 putsymb(a->asym->name, 'z', a->aoffset, 0); 450 else 451 if(a->type == D_FILE1) 452 putsymb(a->asym->name, 'Z', a->aoffset, 0); 453 454 if(s->type == STEXT) 455 putsymb(s->name, 'T', s->value, s->version); 456 else 457 putsymb(s->name, 'L', s->value, s->version); 458 459 /* frame, auto and param after */ 460 putsymb(".frame", 'm', p->to.offset+4, 0); 461 for(a=p->to.autom; a; a=a->link) 462 if(a->type == D_AUTO) 463 putsymb(a->asym->name, 'a', -a->aoffset, 0); 464 else 465 if(a->type == D_PARAM) 466 putsymb(a->asym->name, 'p', a->aoffset, 0); 467 } 468 if(debug['v'] || debug['n']) 469 Bprint(&bso, "symsize = %lud\n", symsize); 470 Bflush(&bso); 471 } 472 473 void 474 putsymb(char *s, int t, long v, int ver) 475 { 476 int i, f; 477 478 if(t == 'f') 479 s++; 480 LPUT(v); 481 if(ver) 482 t += 'a' - 'A'; 483 CPUT(t+0x80); /* 0x80 is variable length */ 484 485 if(t == 'Z' || t == 'z') { 486 CPUT(s[0]); 487 for(i=1; s[i] != 0 || s[i+1] != 0; i += 2) { 488 CPUT(s[i]); 489 CPUT(s[i+1]); 490 } 491 CPUT(0); 492 CPUT(0); 493 i++; 494 } 495 else { 496 for(i=0; s[i]; i++) 497 CPUT(s[i]); 498 CPUT(0); 499 } 500 symsize += 4 + 1 + i + 1; 501 502 if(debug['n']) { 503 if(t == 'z' || t == 'Z') { 504 Bprint(&bso, "%c %.8lux ", t, v); 505 for(i=1; s[i] != 0 || s[i+1] != 0; i+=2) { 506 f = ((s[i]&0xff) << 8) | (s[i+1]&0xff); 507 Bprint(&bso, "/%x", f); 508 } 509 Bprint(&bso, "\n"); 510 return; 511 } 512 if(ver) 513 Bprint(&bso, "%c %.8lux %s<%d>\n", t, v, s, ver); 514 else 515 Bprint(&bso, "%c %.8lux %s\n", t, v, s); 516 } 517 } 518 519 #define MINLC 4 520 void 521 asmlc(void) 522 { 523 long oldpc, oldlc; 524 Prog *p; 525 long v, s; 526 527 oldpc = INITTEXT; 528 oldlc = 0; 529 for(p = firstp; p != P; p = p->link) { 530 if(p->line == oldlc || p->as == ATEXT || p->as == ANOP) { 531 if(p->as == ATEXT) 532 curtext = p; 533 if(debug['L']) 534 Bprint(&bso, "%6lux %P\n", 535 p->pc, p); 536 continue; 537 } 538 if(debug['L']) 539 Bprint(&bso, "\t\t%6ld", lcsize); 540 v = (p->pc - oldpc) / MINLC; 541 while(v) { 542 s = 127; 543 if(v < 127) 544 s = v; 545 CPUT(s+128); /* 129-255 +pc */ 546 if(debug['L']) 547 Bprint(&bso, " pc+%ld*%d(%ld)", s, MINLC, s+128); 548 v -= s; 549 lcsize++; 550 } 551 s = p->line - oldlc; 552 oldlc = p->line; 553 oldpc = p->pc + MINLC; 554 if(s > 64 || s < -64) { 555 CPUT(0); /* 0 vv +lc */ 556 CPUT(s>>24); 557 CPUT(s>>16); 558 CPUT(s>>8); 559 CPUT(s); 560 if(debug['L']) { 561 if(s > 0) 562 Bprint(&bso, " lc+%ld(%d,%ld)\n", 563 s, 0, s); 564 else 565 Bprint(&bso, " lc%ld(%d,%ld)\n", 566 s, 0, s); 567 Bprint(&bso, "%6lux %P\n", 568 p->pc, p); 569 } 570 lcsize += 5; 571 continue; 572 } 573 if(s > 0) { 574 CPUT(0+s); /* 1-64 +lc */ 575 if(debug['L']) { 576 Bprint(&bso, " lc+%ld(%ld)\n", s, 0+s); 577 Bprint(&bso, "%6lux %P\n", 578 p->pc, p); 579 } 580 } else { 581 CPUT(64-s); /* 65-128 -lc */ 582 if(debug['L']) { 583 Bprint(&bso, " lc%ld(%ld)\n", s, 64-s); 584 Bprint(&bso, "%6lux %P\n", 585 p->pc, p); 586 } 587 } 588 lcsize++; 589 } 590 while(lcsize & 1) { 591 s = 129; 592 CPUT(s); 593 lcsize++; 594 } 595 if(debug['v'] || debug['L']) 596 Bprint(&bso, "lcsize = %ld\n", lcsize); 597 Bflush(&bso); 598 } 599 600 void 601 datblk(long s, long n, int str) 602 { 603 Prog *p; 604 char *cast; 605 long l, fl, j, d; 606 int i, c; 607 608 memset(buf.dbuf, 0, n+100); 609 for(p = datap; p != P; p = p->link) { 610 curp = p; 611 if(str != (p->from.sym->type == SSTRING)) 612 continue; 613 l = p->from.sym->value + p->from.offset - s; 614 c = p->reg; 615 i = 0; 616 if(l < 0) { 617 if(l+c <= 0) 618 continue; 619 while(l < 0) { 620 l++; 621 i++; 622 } 623 } 624 if(l >= n) 625 continue; 626 if(p->as != AINIT && p->as != ADYNT) { 627 for(j=l+(c-i)-1; j>=l; j--) 628 if(buf.dbuf[j]) { 629 print("%P\n", p); 630 diag("multiple initialization\n"); 631 break; 632 } 633 } 634 switch(p->to.type) { 635 default: 636 diag("unknown mode in initialization\n%P\n", p); 637 break; 638 639 case D_FCONST: 640 switch(c) { 641 default: 642 case 4: 643 fl = ieeedtof(p->to.ieee); 644 cast = (char*)&fl; 645 for(; i<c; i++) { 646 buf.dbuf[l] = cast[fnuxi8[i+4]]; 647 l++; 648 } 649 break; 650 case 8: 651 cast = (char*)p->to.ieee; 652 for(; i<c; i++) { 653 buf.dbuf[l] = cast[fnuxi8[i]]; 654 l++; 655 } 656 break; 657 } 658 break; 659 660 case D_SCONST: 661 for(; i<c; i++) { 662 buf.dbuf[l] = p->to.sval[i]; 663 l++; 664 } 665 break; 666 667 case D_CONST: 668 d = p->to.offset; 669 if(p->to.sym) { 670 switch(p->to.sym->type) { 671 case STEXT: 672 case SLEAF: 673 case SSTRING: 674 d += p->to.sym->value; 675 break; 676 case SDATA: 677 case SBSS: 678 d += p->to.sym->value + INITDAT; 679 break; 680 } 681 } 682 cast = (char*)&d; 683 switch(c) { 684 default: 685 diag("bad nuxi %d %d\n%P\n", c, i, curp); 686 break; 687 case 1: 688 for(; i<c; i++) { 689 buf.dbuf[l] = cast[inuxi1[i]]; 690 l++; 691 } 692 break; 693 case 2: 694 for(; i<c; i++) { 695 buf.dbuf[l] = cast[inuxi2[i]]; 696 l++; 697 } 698 break; 699 case 4: 700 for(; i<c; i++) { 701 buf.dbuf[l] = cast[inuxi4[i]]; 702 l++; 703 } 704 break; 705 } 706 break; 707 } 708 } 709 write(cout, buf.dbuf, n); 710 } 711 712 #define OP_RRR(op,r1,r2,r3)\ 713 (op|(((r1)&31L)<<16)|(((r2)&31L)<<21)|(((r3)&31L)<<11)) 714 #define OP_IRR(op,i,r2,r3)\ 715 (op|((i)&0xffffL)|(((r2)&31L)<<21)|(((r3)&31L)<<16)) 716 #define OP_SRR(op,s,r2,r3)\ 717 (op|(((s)&31L)<<6)|(((r2)&31L)<<16)|(((r3)&31L)<<11)) 718 #define OP_FRRR(op,r1,r2,r3)\ 719 (op|(((r1)&31L)<<16)|(((r2)&31L)<<11)|(((r3)&31L)<<6)) 720 #define OP_JMP(op,i)\ 721 ((op)|((i)&0x3ffffffL)) 722 723 #define OP(x,y)\ 724 (((x)<<3)|((y)<<0)) 725 #define SP(x,y)\ 726 (((x)<<29)|((y)<<26)) 727 #define BCOND(x,y)\ 728 (((x)<<19)|((y)<<16)) 729 #define MMU(x,y)\ 730 (SP(2,0)|(16<<21)|((x)<<3)|((y)<<0)) 731 #define FPF(x,y)\ 732 (SP(2,1)|(16<<21)|((x)<<3)|((y)<<0)) 733 #define FPD(x,y)\ 734 (SP(2,1)|(17<<21)|((x)<<3)|((y)<<0)) 735 #define FPW(x,y)\ 736 (SP(2,1)|(20<<21)|((x)<<3)|((y)<<0)) 737 738 int 739 asmout(Prog *p, Optab *o, int aflag) 740 { 741 long o1, o2, o3, o4, o5, o6, o7, v; 742 Prog *ct; 743 int r, a; 744 745 o1 = 0; 746 o2 = 0; 747 o3 = 0; 748 o4 = 0; 749 o5 = 0; 750 o6 = 0; 751 o7 = 0; 752 switch(o->type) { 753 default: 754 diag("unknown type %d\n", o->type); 755 if(!debug['a']) 756 prasm(p); 757 break; 758 759 case 0: /* pseudo ops */ 760 if(aflag) { 761 if(p->link) { 762 if(p->as == ATEXT) { 763 ct = curtext; 764 o2 = autosize; 765 curtext = p; 766 autosize = p->to.offset + 4; 767 o1 = asmout(p->link, oplook(p->link), aflag); 768 curtext = ct; 769 autosize = o2; 770 } else 771 o1 = asmout(p->link, oplook(p->link), aflag); 772 } 773 return o1; 774 } 775 break; 776 777 case 1: /* mov[v] r1,r2 ==> OR r1,r0,r2 */ 778 o1 = OP_RRR(oprrr(AOR), p->from.reg, REGZERO, p->to.reg); 779 break; 780 781 case 2: /* add/sub r1,[r2],r3 */ 782 r = p->reg; 783 if(r == NREG) 784 r = p->to.reg; 785 o1 = OP_RRR(oprrr(p->as), p->from.reg, r, p->to.reg); 786 break; 787 788 case 3: /* mov $soreg, r ==> or/add $i,o,r */ 789 v = regoff(&p->from); 790 r = p->from.reg; 791 if(r == NREG) 792 r = o->param; 793 a = AADDU; 794 if(o->a1 == C_ANDCON) 795 a = AOR; 796 o1 = OP_IRR(opirr(a), v, r, p->to.reg); 797 break; 798 799 case 4: /* add $scon,[r1],r2 */ 800 v = regoff(&p->from); 801 r = p->reg; 802 if(r == NREG) 803 r = p->to.reg; 804 o1 = OP_IRR(opirr(p->as), v, r, p->to.reg); 805 break; 806 807 case 5: /* syscall */ 808 if(aflag) 809 return 0; 810 o1 = oprrr(p->as); 811 break; 812 813 case 6: /* beq r1,[r2],sbra */ 814 if(aflag) 815 return 0; 816 if(p->cond == P) 817 v = -4 >> 2; 818 else 819 v = (p->cond->pc - pc-4) >> 2; 820 if(((v << 16) >> 16) != v) 821 diag("short branch too far: %d\n%P\n", v, p); 822 o1 = OP_IRR(opirr(p->as), v, p->from.reg, p->reg); 823 break; 824 825 case 7: /* mov r, soreg ==> sw o(r) */ 826 r = p->to.reg; 827 if(r == NREG) 828 r = o->param; 829 v = regoff(&p->to); 830 o1 = OP_IRR(opirr(p->as), v, r, p->from.reg); 831 break; 832 833 case 8: /* mov soreg, r ==> lw o(r) */ 834 r = p->from.reg; 835 if(r == NREG) 836 r = o->param; 837 v = regoff(&p->from); 838 o1 = OP_IRR(opirr(p->as+ALAST), v, r, p->to.reg); 839 break; 840 841 case 9: /* asl r1,[r2],r3 */ 842 r = p->reg; 843 if(r == NREG) 844 r = p->to.reg; 845 o1 = OP_RRR(oprrr(p->as), r, p->from.reg, p->to.reg); 846 break; 847 848 case 10: /* add $con,[r1],r2 ==> mov $con,t; add t,[r1],r2 */ 849 v = regoff(&p->from); 850 r = AOR; 851 if(v < 0) 852 r = AADDU; 853 o1 = OP_IRR(opirr(r), v, 0, REGTMP); 854 r = p->reg; 855 if(r == NREG) 856 r = p->to.reg; 857 o2 = OP_RRR(oprrr(p->as), REGTMP, r, p->to.reg); 858 break; 859 860 case 11: /* jmp lbra */ 861 if(aflag) 862 return 0; 863 if(p->cond == P) 864 v = p->pc >> 2; 865 else 866 v = p->cond->pc >> 2; 867 o1 = OP_JMP(opirr(p->as), v); 868 if(!debug['Y'] && p->link && p->cond && isnop(p->link)) { 869 nop.branch.count--; 870 nop.branch.outof--; 871 nop.jump.outof++; 872 o2 = asmout(p->cond, oplook(p->cond), 1); 873 if(o2) { 874 o1 += 1; 875 if(debug['a']) 876 Bprint(&bso, " %.8lux: %.8lux %.8lux%P\n", 877 p->pc, o1, o2, p); 878 LPUT(o1); 879 LPUT(o2); 880 return 1; 881 } 882 } 883 break; 884 885 case 12: /* movbs r,r */ 886 v = 16; 887 if(p->as == AMOVB) 888 v = 24; 889 o1 = OP_SRR(opirr(ASLL), v, p->from.reg, p->to.reg); 890 o2 = OP_SRR(opirr(ASRA), v, p->to.reg, p->to.reg); 891 break; 892 893 case 13: /* movbu r,r */ 894 if(p->as == AMOVBU) 895 o1 = OP_IRR(opirr(AAND), 0xffL, p->from.reg, p->to.reg); 896 else 897 o1 = OP_IRR(opirr(AAND), 0xffffL, p->from.reg, p->to.reg); 898 break; 899 900 case 16: /* sll $c,[r1],r2 */ 901 v = regoff(&p->from); 902 r = p->reg; 903 if(r == NREG) 904 r = p->to.reg; 905 if(v >= 32) 906 o1 = OP_SRR(opirr(p->as+ALAST), v-32, r, p->to.reg); 907 else 908 o1 = OP_SRR(opirr(p->as), v, r, p->to.reg); 909 break; 910 911 case 18: /* jmp [r1],0(r2) */ 912 if(aflag) 913 return 0; 914 r = p->reg; 915 if(r == NREG) 916 r = o->param; 917 o1 = OP_RRR(oprrr(p->as), 0, p->to.reg, r); 918 break; 919 920 case 19: /* mov $lcon,r ==> lu+or */ 921 v = regoff(&p->from); 922 o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, p->to.reg); 923 o2 = OP_IRR(opirr(AOR), v, p->to.reg, p->to.reg); 924 break; 925 926 case 20: /* mov lohi,r */ 927 r = OP(2,0); /* mfhi */ 928 if(p->from.type == D_LO) 929 r = OP(2,2); /* mflo */ 930 o1 = OP_RRR(r, REGZERO, REGZERO, p->to.reg); 931 break; 932 933 case 21: /* mov r,lohi */ 934 r = OP(2,1); /* mthi */ 935 if(p->to.type == D_LO) 936 r = OP(2,3); /* mtlo */ 937 o1 = OP_RRR(r, REGZERO, p->from.reg, REGZERO); 938 break; 939 940 case 22: /* mul r1,r2 */ 941 o1 = OP_RRR(oprrr(p->as), p->from.reg, p->reg, REGZERO); 942 break; 943 944 case 23: /* add $lcon,r1,r2 ==> lu+or+add */ 945 v = regoff(&p->from); 946 if(p->to.reg == REGTMP || p->reg == REGTMP) 947 diag("cant synthesize large constant\n%P\n", p); 948 o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP); 949 o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP); 950 r = p->reg; 951 if(r == NREG) 952 r = p->to.reg; 953 o3 = OP_RRR(oprrr(p->as), REGTMP, r, p->to.reg); 954 break; 955 956 case 24: /* mov $ucon,,r ==> lu r */ 957 v = regoff(&p->from); 958 o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, p->to.reg); 959 break; 960 961 case 25: /* add/and $ucon,[r1],r2 ==> lu $con,t; add t,[r1],r2 */ 962 v = regoff(&p->from); 963 o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP); 964 r = p->reg; 965 if(r == NREG) 966 r = p->to.reg; 967 o2 = OP_RRR(oprrr(p->as), REGTMP, r, p->to.reg); 968 break; 969 970 case 26: /* mov $lsext/auto/oreg,,r2 ==> lu+or+add */ 971 v = regoff(&p->from); 972 if(p->to.reg == REGTMP) 973 diag("cant synthesize large constant\n%P\n", p); 974 o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP); 975 o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP); 976 r = p->from.reg; 977 if(r == NREG) 978 r = o->param; 979 o3 = OP_RRR(oprrr(AADDU), REGTMP, r, p->to.reg); 980 break; 981 982 case 27: /* mov [sl]ext/auto/oreg,fr ==> lwc1 o(r) */ 983 r = p->from.reg; 984 if(r == NREG) 985 r = o->param; 986 v = regoff(&p->from); 987 switch(o->size) { 988 case 20: 989 o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP); 990 o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP); 991 o3 = OP_RRR(oprrr(AADDU), r, REGTMP, REGTMP); 992 o4 = OP_IRR(opirr(AMOVF+ALAST), 0, REGTMP, p->to.reg+1); 993 o5 = OP_IRR(opirr(AMOVF+ALAST), 4, REGTMP, p->to.reg); 994 break; 995 case 16: 996 o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP); 997 o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP); 998 o3 = OP_RRR(oprrr(AADDU), r, REGTMP, REGTMP); 999 o4 = OP_IRR(opirr(AMOVF+ALAST), 0, REGTMP, p->to.reg); 1000 break; 1001 case 8: 1002 o1 = OP_IRR(opirr(AMOVF+ALAST), v, r, p->to.reg+1); 1003 o2 = OP_IRR(opirr(AMOVF+ALAST), v+4, r, p->to.reg); 1004 break; 1005 case 4: 1006 o1 = OP_IRR(opirr(AMOVF+ALAST), v, r, p->to.reg); 1007 break; 1008 } 1009 break; 1010 1011 case 28: /* mov fr,[sl]ext/auto/oreg ==> swc1 o(r) */ 1012 r = p->to.reg; 1013 if(r == NREG) 1014 r = o->param; 1015 v = regoff(&p->to); 1016 switch(o->size) { 1017 case 20: 1018 if(r == REGTMP) 1019 diag("cant synthesize large constant\n%P\n", p); 1020 o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP); 1021 o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP); 1022 o3 = OP_RRR(oprrr(AADDU), r, REGTMP, REGTMP); 1023 o4 = OP_IRR(opirr(AMOVF), 0, REGTMP, p->from.reg+1); 1024 o5 = OP_IRR(opirr(AMOVF), 4, REGTMP, p->from.reg); 1025 break; 1026 case 16: 1027 if(r == REGTMP) 1028 diag("cant synthesize large constant\n%P\n", p); 1029 o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP); 1030 o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP); 1031 o3 = OP_RRR(oprrr(AADDU), r, REGTMP, REGTMP); 1032 o4 = OP_IRR(opirr(AMOVF), 0, REGTMP, p->from.reg); 1033 break; 1034 case 8: 1035 o1 = OP_IRR(opirr(AMOVF), v, r, p->from.reg+1); 1036 o2 = OP_IRR(opirr(AMOVF), v+4, r, p->from.reg); 1037 break; 1038 case 4: 1039 o1 = OP_IRR(opirr(AMOVF), v, r, p->from.reg); 1040 break; 1041 } 1042 break; 1043 1044 case 30: /* movw r,fr */ 1045 r = SP(2,1)|(4<<21); /* mtc1 */ 1046 o1 = OP_RRR(r, p->from.reg, 0, p->to.reg); 1047 break; 1048 1049 case 31: /* movw fr,r */ 1050 r = SP(2,1)|(0<<21); /* mfc1 */ 1051 o1 = OP_RRR(r, p->to.reg, 0, p->from.reg); 1052 break; 1053 1054 case 32: /* fadd fr1,[fr2],fr3 */ 1055 r = p->reg; 1056 if(r == NREG) 1057 o1 = OP_FRRR(oprrr(p->as), p->from.reg, p->to.reg, p->to.reg); 1058 else 1059 o1 = OP_FRRR(oprrr(p->as), p->from.reg, r, p->to.reg); 1060 break; 1061 1062 case 33: /* fabs fr1,fr3 */ 1063 o1 = OP_FRRR(oprrr(p->as), 0, p->from.reg, p->to.reg); 1064 break; 1065 1066 case 34: /* mov $con,fr ==> or/add $i,r,r2 */ 1067 v = regoff(&p->from); 1068 r = AADDU; 1069 if(o->a1 == C_ANDCON) 1070 r = AOR; 1071 o1 = OP_IRR(opirr(r), v, 0, REGTMP); 1072 o2 = OP_RRR(SP(2,1)|(4<<21), REGTMP, 0, p->to.reg); /* mtc1 */ 1073 break; 1074 1075 case 35: /* mov r,lext/luto/oreg ==> sw o(r) */ 1076 /* 1077 * the lowbits of the constant cannot 1078 * be moved into the offset of the load 1079 * because the mips 4000 in 64-bit mode 1080 * does a 64-bit add and it will screw up. 1081 */ 1082 v = regoff(&p->to); 1083 r = p->to.reg; 1084 if(r == NREG) 1085 r = o->param; 1086 if(r == REGTMP) 1087 diag("cant synthesize large constant\n%P\n", p); 1088 o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP); 1089 o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP); 1090 o3 = OP_RRR(oprrr(AADDU), r, REGTMP, REGTMP); 1091 o4 = OP_IRR(opirr(p->as), 0, REGTMP, p->from.reg); 1092 break; 1093 1094 case 36: /* mov lext/lauto/lreg,r ==> lw o(r30) */ 1095 v = regoff(&p->from); 1096 r = p->from.reg; 1097 if(r == NREG) 1098 r = o->param; 1099 if(r == REGTMP) 1100 diag("cant synthesize large constant\n%P\n", p); 1101 o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP); 1102 o2 = OP_IRR(opirr(AOR), v, REGTMP, REGTMP); 1103 o3 = OP_RRR(oprrr(AADDU), r, REGTMP, REGTMP); 1104 o4 = OP_IRR(opirr(p->as+ALAST), 0, REGTMP, p->to.reg); 1105 break; 1106 1107 case 37: /* movw r,mr */ 1108 r = SP(2,0)|(4<<21); /* mtc0 */ 1109 if(p->as == AMOVV) 1110 r = SP(2,0)|(5<<21); /* dmtc0 */ 1111 o1 = OP_RRR(r, p->from.reg, 0, p->to.reg); 1112 break; 1113 1114 case 38: /* movw mr,r */ 1115 r = SP(2,0)|(0<<21); /* mfc0 */ 1116 if(p->as == AMOVV) 1117 r = SP(2,0)|(1<<21); /* dmfc0 */ 1118 o1 = OP_RRR(r, p->to.reg, 0, p->from.reg); 1119 break; 1120 1121 case 39: /* rfe ==> jmp+rfe */ 1122 if(aflag) 1123 return 0; 1124 o1 = OP_RRR(oprrr(AJMP), 0, p->to.reg, REGZERO); 1125 o2 = oprrr(p->as); 1126 break; 1127 1128 case 40: /* word */ 1129 if(aflag) 1130 return 0; 1131 o1 = regoff(&p->to); 1132 break; 1133 1134 case 41: /* movw r,fcr */ 1135 o1 = OP_RRR(SP(2,1)|(2<<21), REGZERO, 0, p->to.reg); /* mfcc1 */ 1136 o2 = OP_RRR(SP(2,1)|(6<<21), p->from.reg, 0, p->to.reg);/* mtcc1 */ 1137 break; 1138 1139 case 42: /* movw fcr,r */ 1140 o1 = OP_RRR(SP(2,1)|(2<<21), p->to.reg, 0, p->from.reg);/* mfcc1 */ 1141 break; 1142 1143 case 45: /* case r */ 1144 if(p->link == P) 1145 v = p->pc+28; 1146 else 1147 v = p->link->pc; 1148 if(v & (1<<15)) 1149 o1 = OP_IRR(opirr(ALAST), (v>>16)+1, REGZERO, REGTMP); 1150 else 1151 o1 = OP_IRR(opirr(ALAST), v>>16, REGZERO, REGTMP); 1152 o2 = OP_SRR(opirr(ASLL), 2, p->from.reg, p->from.reg); 1153 o3 = OP_RRR(oprrr(AADD), p->from.reg, REGTMP, REGTMP); 1154 o4 = OP_IRR(opirr(AMOVW+ALAST), v, REGTMP, REGTMP); 1155 o5 = OP_RRR(oprrr(ANOR), REGZERO, REGZERO, REGZERO); 1156 o6 = OP_RRR(oprrr(AJMP), 0, REGTMP, REGZERO); 1157 o7 = OP_RRR(oprrr(ANOR), REGZERO, REGZERO, REGZERO); 1158 break; 1159 1160 case 46: /* bcase $con,lbra */ 1161 if(p->cond == P) 1162 v = p->pc; 1163 else 1164 v = p->cond->pc; 1165 o1 = v; 1166 break; 1167 } 1168 if(aflag) 1169 return o1; 1170 v = p->pc; 1171 switch(o->size) { 1172 default: 1173 if(debug['a']) 1174 Bprint(&bso, " %.8lux:\t\t%P\n", v, p); 1175 break; 1176 case 4: 1177 if(debug['a']) 1178 Bprint(&bso, " %.8lux: %.8lux\t%P\n", v, o1, p); 1179 LPUT(o1); 1180 break; 1181 case 8: 1182 if(debug['a']) 1183 Bprint(&bso, " %.8lux: %.8lux %.8lux%P\n", v, o1, o2, p); 1184 LPUT(o1); 1185 LPUT(o2); 1186 break; 1187 case 12: 1188 if(debug['a']) 1189 Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux%P\n", v, o1, o2, o3, p); 1190 LPUT(o1); 1191 LPUT(o2); 1192 LPUT(o3); 1193 break; 1194 case 16: 1195 if(debug['a']) 1196 Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux %.8lux%P\n", 1197 v, o1, o2, o3, o4, p); 1198 LPUT(o1); 1199 LPUT(o2); 1200 LPUT(o3); 1201 LPUT(o4); 1202 break; 1203 case 20: 1204 if(debug['a']) 1205 Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux %.8lux %.8lux%P\n", 1206 v, o1, o2, o3, o4, o5, p); 1207 LPUT(o1); 1208 LPUT(o2); 1209 LPUT(o3); 1210 LPUT(o4); 1211 LPUT(o5); 1212 break; 1213 1214 case 28: 1215 if(debug['a']) 1216 Bprint(&bso, " %.8lux: %.8lux %.8lux %.8lux %.8lux %.8lux %.8lux %.8lux%P\n", 1217 v, o1, o2, o3, o4, o5, o6, o7, p); 1218 LPUT(o1); 1219 LPUT(o2); 1220 LPUT(o3); 1221 LPUT(o4); 1222 LPUT(o5); 1223 LPUT(o6); 1224 LPUT(o7); 1225 break; 1226 } 1227 return 0; 1228 } 1229 1230 int 1231 isnop(Prog *p) 1232 { 1233 if(p->as != ANOR) 1234 return 0; 1235 if(p->reg != REGZERO && p->reg != NREG) 1236 return 0; 1237 if(p->from.type != D_REG || p->from.reg != REGZERO) 1238 return 0; 1239 if(p->to.type != D_REG || p->to.reg != REGZERO) 1240 return 0; 1241 return 1; 1242 } 1243 1244 long 1245 oprrr(int a) 1246 { 1247 switch(a) { 1248 case AADD: return OP(4,0); 1249 case AADDU: return OP(4,1); 1250 case ASGT: return OP(5,2); 1251 case ASGTU: return OP(5,3); 1252 case AAND: return OP(4,4); 1253 case AOR: return OP(4,5); 1254 case AXOR: return OP(4,6); 1255 case ASUB: return OP(4,2); 1256 case ASUBU: return OP(4,3); 1257 case ANOR: return OP(4,7); 1258 case ASLL: return OP(0,4); 1259 case ASRL: return OP(0,6); 1260 case ASRA: return OP(0,7); 1261 1262 case AREM: 1263 case ADIV: return OP(3,2); 1264 case AREMU: 1265 case ADIVU: return OP(3,3); 1266 case AMUL: return OP(3,0); 1267 case AMULU: return OP(3,1); 1268 1269 case AJMP: return OP(1,0); 1270 case AJAL: return OP(1,1); 1271 1272 case ABREAK: return OP(1,5); 1273 case ASYSCALL: return OP(1,4); 1274 case ATLBP: return MMU(1,0); 1275 case ATLBR: return MMU(0,1); 1276 case ATLBWI: return MMU(0,2); 1277 case ATLBWR: return MMU(0,6); 1278 case ARFE: return MMU(2,0); 1279 1280 case ADIVF: return FPF(0,3); 1281 case ADIVD: return FPD(0,3); 1282 case AMULF: return FPF(0,2); 1283 case AMULD: return FPD(0,2); 1284 case ASUBF: return FPF(0,1); 1285 case ASUBD: return FPD(0,1); 1286 case AADDF: return FPF(0,0); 1287 case AADDD: return FPD(0,0); 1288 1289 case AMOVFW: return FPF(4,4); 1290 case AMOVDW: return FPD(4,4); 1291 case AMOVWF: return FPW(4,0); 1292 case AMOVDF: return FPD(4,0); 1293 case AMOVWD: return FPW(4,1); 1294 case AMOVFD: return FPF(4,1); 1295 case AABSF: return FPF(0,5); 1296 case AABSD: return FPD(0,5); 1297 case AMOVF: return FPF(0,6); 1298 case AMOVD: return FPD(0,6); 1299 case ANEGF: return FPF(0,7); 1300 case ANEGD: return FPD(0,7); 1301 1302 case ACMPEQF: return FPF(6,2); 1303 case ACMPEQD: return FPD(6,2); 1304 case ACMPGTF: return FPF(7,4); 1305 case ACMPGTD: return FPD(7,4); 1306 case ACMPGEF: return FPF(7,6); 1307 case ACMPGED: return FPD(7,6); 1308 1309 case ADIVV: return OP(3,6); 1310 case ADIVVU: return OP(3,7); 1311 case AADDV: return OP(5,4); 1312 case AADDVU: return OP(5,5); 1313 } 1314 diag("bad rrr %d\n", a); 1315 return 0; 1316 } 1317 1318 long 1319 opirr(int a) 1320 { 1321 switch(a) { 1322 case AADD: return SP(1,0); 1323 case AADDU: return SP(1,1); 1324 case ASGT: return SP(1,2); 1325 case ASGTU: return SP(1,3); 1326 case AAND: return SP(1,4); 1327 case AOR: return SP(1,5); 1328 case AXOR: return SP(1,6); 1329 case ALAST: return SP(1,7); 1330 case ASLL: return OP(0,0); 1331 case ASRL: return OP(0,2); 1332 case ASRA: return OP(0,3); 1333 1334 case AJMP: return SP(0,2); 1335 case AJAL: return SP(0,3); 1336 case ABEQ: return SP(0,4); 1337 case ABNE: return SP(0,5); 1338 1339 case ABGEZ: return SP(0,1)|BCOND(0,1); 1340 case ABGEZAL: return SP(0,1)|BCOND(2,1); 1341 case ABGTZ: return SP(0,7); 1342 case ABLEZ: return SP(0,6); 1343 case ABLTZ: return SP(0,1)|BCOND(0,0); 1344 case ABLTZAL: return SP(0,1)|BCOND(2,0); 1345 1346 case ABFPT: return SP(2,1)|(257<<16); 1347 case ABFPF: return SP(2,1)|(256<<16); 1348 1349 case AMOVB: 1350 case AMOVBU: return SP(5,0); 1351 case AMOVH: 1352 case AMOVHU: return SP(5,1); 1353 case AMOVW: return SP(5,3); 1354 case AMOVV: return SP(7,7); 1355 case AMOVF: return SP(7,1); 1356 case AMOVWL: return SP(5,2); 1357 case AMOVWR: return SP(5,6); 1358 case AMOVVL: return SP(5,4); 1359 case AMOVVR: return SP(5,5); 1360 1361 case ABREAK: return SP(5,7); 1362 1363 case AMOVWL+ALAST: return SP(4,2); 1364 case AMOVWR+ALAST: return SP(4,6); 1365 case AMOVVL+ALAST: return SP(3,2); 1366 case AMOVVR+ALAST: return SP(3,3); 1367 case AMOVB+ALAST: return SP(4,0); 1368 case AMOVBU+ALAST: return SP(4,4); 1369 case AMOVH+ALAST: return SP(4,1); 1370 case AMOVHU+ALAST: return SP(4,5); 1371 case AMOVW+ALAST: return SP(4,3); 1372 case AMOVV+ALAST: return SP(6,7); 1373 case AMOVF+ALAST: return SP(6,1); 1374 1375 case ASLLV: return OP(7,0); 1376 case ASRLV: return OP(7,2); 1377 case ASRAV: return OP(7,3); 1378 case ASLLV+ALAST: return OP(7,4); 1379 case ASRLV+ALAST: return OP(7,6); 1380 case ASRAV+ALAST: return OP(7,7); 1381 1382 case AADDV: return SP(3,0); 1383 case AADDVU: return SP(3,1); 1384 } 1385 diag("bad irr %d\n", a); 1386 return 0; 1387 } 1388