1 /* 2 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 3 * unrestricted use provided that this legend is included on all tape 4 * media and as a part of the software program in whole or part. Users 5 * may copy or modify Sun RPC without charge, but are not authorized 6 * to license or distribute it to anyone else except as part of a product or 7 * program developed by the user. 8 * 9 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 10 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 11 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 12 * 13 * Sun RPC is provided with no support and without any obligation on the 14 * part of Sun Microsystems, Inc. to assist in its use, correction, 15 * modification or enhancement. 16 * 17 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 18 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 19 * OR ANY PART THEREOF. 20 * 21 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 22 * or profits or other special, indirect and consequential damages, even if 23 * Sun has been advised of the possibility of such damages. 24 * 25 * Sun Microsystems, Inc. 26 * 2550 Garcia Avenue 27 * Mountain View, California 94043 28 */ 29 30 #ident "@(#)rpc_cout.c 1.14 93/07/05 SMI" 31 32 #ifndef lint 33 static char sccsid[] = "@(#)rpc_cout.c 1.13 89/02/22 (C) 1987 SMI"; 34 #endif 35 36 /* 37 * rpc_cout.c, XDR routine outputter for the RPC protocol compiler 38 * Copyright (C) 1987, Sun Microsystems, Inc. 39 */ 40 #include <stdio.h> 41 #include <string.h> 42 #include "rpc_parse.h" 43 #include "rpc_util.h" 44 45 static int print_header __P(( definition * )); 46 static int print_trailer __P(( void )); 47 static int print_stat __P(( int , declaration * )); 48 static int emit_enum __P(( definition * )); 49 static int emit_program __P(( definition * )); 50 static int emit_union __P(( definition * )); 51 static int emit_struct __P(( definition * )); 52 static int emit_typedef __P(( definition * )); 53 54 /* 55 * Emit the C-routine for the given definition 56 */ 57 void 58 emit(def) 59 definition *def; 60 { 61 if (def->def_kind == DEF_CONST) { 62 return; 63 } 64 if (def->def_kind == DEF_PROGRAM) { 65 emit_program(def); 66 return; 67 } 68 if (def->def_kind == DEF_TYPEDEF) { 69 /* 70 * now we need to handle declarations like 71 * struct typedef foo foo; 72 * since we dont want this to be expanded into 2 calls to xdr_foo 73 */ 74 75 if (strcmp(def->def.ty.old_type, def->def_name) == 0) 76 return; 77 }; 78 print_header(def); 79 switch (def->def_kind) { 80 case DEF_UNION: 81 emit_union(def); 82 break; 83 case DEF_ENUM: 84 emit_enum(def); 85 break; 86 case DEF_STRUCT: 87 emit_struct(def); 88 break; 89 case DEF_TYPEDEF: 90 emit_typedef(def); 91 break; 92 } 93 print_trailer(); 94 } 95 96 static 97 findtype(def, type) 98 definition *def; 99 char *type; 100 { 101 102 if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST) { 103 return (0); 104 } else { 105 return (streq(def->def_name, type)); 106 } 107 } 108 109 static 110 undefined(type) 111 char *type; 112 { 113 definition *def; 114 115 def = (definition *) FINDVAL(defined, type, findtype); 116 return (def == NULL); 117 } 118 119 120 static 121 print_generic_header(procname, pointerp) 122 char* procname; 123 int pointerp; 124 { 125 f_print(fout, "\n"); 126 f_print(fout, "bool_t\n"); 127 if (Cflag) { 128 f_print(fout, "xdr_%s(", procname); 129 f_print(fout, "register XDR *xdrs, "); 130 f_print(fout, "%s ", procname); 131 if (pointerp) 132 f_print(fout, "*"); 133 f_print(fout, "objp)\n{\n\n"); 134 } else { 135 f_print(fout, "xdr_%s(xdrs, objp)\n", procname); 136 f_print(fout, "\tregister XDR *xdrs;\n"); 137 f_print(fout, "\t%s ", procname); 138 if (pointerp) 139 f_print(fout, "*"); 140 f_print(fout, "objp;\n{\n\n"); 141 } 142 } 143 144 static 145 print_header(def) 146 definition *def; 147 { 148 149 decl_list *dl; 150 bas_type *ptr; 151 int i; 152 153 print_generic_header(def->def_name, 154 def->def_kind != DEF_TYPEDEF || 155 !isvectordef(def->def.ty.old_type, 156 def->def.ty.rel)); 157 /* Now add Inline support */ 158 159 if (inline == 0) 160 return; 161 /* May cause lint to complain. but ... */ 162 f_print(fout, "\tregister long *buf;\n\n"); 163 } 164 165 static 166 print_prog_header(plist) 167 proc_list *plist; 168 { 169 print_generic_header(plist->args.argname, 1); 170 } 171 172 static 173 print_trailer() 174 { 175 f_print(fout, "\treturn (TRUE);\n"); 176 f_print(fout, "}\n"); 177 } 178 179 180 static 181 print_ifopen(indent, name) 182 int indent; 183 char *name; 184 { 185 tabify(fout, indent); 186 f_print(fout, "if (!xdr_%s(xdrs", name); 187 } 188 189 static 190 print_ifarg(arg) 191 char *arg; 192 { 193 f_print(fout, ", %s", arg); 194 } 195 196 static 197 print_ifsizeof(indent, prefix, type) 198 int indent; 199 char *prefix; 200 char *type; 201 { 202 if (indent) { 203 f_print(fout, ",\n"); 204 tabify(fout, indent); 205 } else { 206 f_print(fout, ", "); 207 } 208 if (streq(type, "bool")) { 209 f_print(fout, "sizeof (bool_t), (xdrproc_t) xdr_bool"); 210 } else { 211 f_print(fout, "sizeof ("); 212 if (undefined(type) && prefix) { 213 f_print(fout, "%s ", prefix); 214 } 215 f_print(fout, "%s), (xdrproc_t) xdr_%s", type, type); 216 } 217 } 218 219 static 220 print_ifclose(indent) 221 int indent; 222 { 223 f_print(fout, "))\n"); 224 tabify(fout, indent); 225 f_print(fout, "\treturn (FALSE);\n"); 226 } 227 228 static 229 print_ifstat(indent, prefix, type, rel, amax, objname, name) 230 int indent; 231 char *prefix; 232 char *type; 233 relation rel; 234 char *amax; 235 char *objname; 236 char *name; 237 { 238 char *alt = NULL; 239 240 switch (rel) { 241 case REL_POINTER: 242 print_ifopen(indent, "pointer"); 243 print_ifarg("(char **)"); 244 f_print(fout, "%s", objname); 245 print_ifsizeof(0, prefix, type); 246 break; 247 case REL_VECTOR: 248 if (streq(type, "string")) { 249 alt = "string"; 250 } else if (streq(type, "opaque")) { 251 alt = "opaque"; 252 } 253 if (alt) { 254 print_ifopen(indent, alt); 255 print_ifarg(objname); 256 } else { 257 print_ifopen(indent, "vector"); 258 print_ifarg("(char *)"); 259 f_print(fout, "%s", objname); 260 } 261 print_ifarg(amax); 262 if (!alt) { 263 print_ifsizeof(indent + 1, prefix, type); 264 } 265 break; 266 case REL_ARRAY: 267 if (streq(type, "string")) { 268 alt = "string"; 269 } else if (streq(type, "opaque")) { 270 alt = "bytes"; 271 } 272 if (streq(type, "string")) { 273 print_ifopen(indent, alt); 274 print_ifarg(objname); 275 } else { 276 if (alt) { 277 print_ifopen(indent, alt); 278 } else { 279 print_ifopen(indent, "array"); 280 } 281 print_ifarg("(char **)"); 282 if (*objname == '&') { 283 f_print(fout, "%s.%s_val, (u_int *) %s.%s_len", 284 objname, name, objname, name); 285 } else { 286 f_print(fout, 287 "&%s->%s_val, (u_int *) &%s->%s_len", 288 objname, name, objname, name); 289 } 290 } 291 print_ifarg(amax); 292 if (!alt) { 293 print_ifsizeof(indent + 1, prefix, type); 294 } 295 break; 296 case REL_ALIAS: 297 print_ifopen(indent, type); 298 print_ifarg(objname); 299 break; 300 } 301 print_ifclose(indent); 302 } 303 304 /* ARGSUSED */ 305 static 306 emit_enum(def) 307 definition *def; 308 { 309 print_ifopen(1, "enum"); 310 print_ifarg("(enum_t *)objp"); 311 print_ifclose(1); 312 } 313 314 static 315 emit_program(def) 316 definition *def; 317 { 318 decl_list *dl; 319 version_list *vlist; 320 proc_list *plist; 321 322 for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next) 323 for (plist = vlist->procs; plist != NULL; plist = plist->next) { 324 if (!newstyle || plist->arg_num < 2) 325 continue; /* old style, or single argument */ 326 print_prog_header(plist); 327 for (dl = plist->args.decls; dl != NULL; 328 dl = dl->next) 329 print_stat(1, &dl->decl); 330 print_trailer(); 331 } 332 } 333 334 335 static 336 emit_union(def) 337 definition *def; 338 { 339 declaration *dflt; 340 case_list *cl; 341 declaration *cs; 342 char *object; 343 char *vecformat = "objp->%s_u.%s"; 344 char *format = "&objp->%s_u.%s"; 345 346 print_stat(1, &def->def.un.enum_decl); 347 f_print(fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name); 348 for (cl = def->def.un.cases; cl != NULL; cl = cl->next) { 349 350 f_print(fout, "\tcase %s:\n", cl->case_name); 351 if (cl->contflag == 1) /* a continued case statement */ 352 continue; 353 cs = &cl->case_decl; 354 if (!streq(cs->type, "void")) { 355 object = alloc(strlen(def->def_name) + strlen(format) + 356 strlen(cs->name) + 1); 357 if (isvectordef (cs->type, cs->rel)) { 358 s_print(object, vecformat, def->def_name, 359 cs->name); 360 } else { 361 s_print(object, format, def->def_name, 362 cs->name); 363 } 364 print_ifstat(2, cs->prefix, cs->type, cs->rel, 365 cs->array_max, object, cs->name); 366 free(object); 367 } 368 f_print(fout, "\t\tbreak;\n"); 369 } 370 dflt = def->def.un.default_decl; 371 if (dflt != NULL) { 372 if (!streq(dflt->type, "void")) { 373 f_print(fout, "\tdefault:\n"); 374 object = alloc(strlen(def->def_name) + strlen(format) + 375 strlen(dflt->name) + 1); 376 if (isvectordef (dflt->type, dflt->rel)) { 377 s_print(object, vecformat, def->def_name, 378 dflt->name); 379 } else { 380 s_print(object, format, def->def_name, 381 dflt->name); 382 } 383 384 print_ifstat(2, dflt->prefix, dflt->type, dflt->rel, 385 dflt->array_max, object, dflt->name); 386 free(object); 387 f_print(fout, "\t\tbreak;\n"); 388 } 389 } else { 390 f_print(fout, "\tdefault:\n"); 391 f_print(fout, "\t\treturn (FALSE);\n"); 392 } 393 394 f_print(fout, "\t}\n"); 395 } 396 397 static void 398 inline_struct(def, flag) 399 definition *def; 400 int flag; 401 { 402 decl_list *dl; 403 int i, size; 404 decl_list *cur, *psav; 405 bas_type *ptr; 406 char *sizestr, *plus; 407 char ptemp[256]; 408 int indent = 1; 409 410 if (flag == PUT) 411 f_print(fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n"); 412 else 413 f_print(fout, "\t\treturn (TRUE);\n\t} else if (xdrs->x_op == XDR_DECODE) {\n"); 414 415 i = 0; 416 size = 0; 417 sizestr = NULL; 418 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) { /* xxx */ 419 /* now walk down the list and check for basic types */ 420 if ((dl->decl.prefix == NULL) && 421 ((ptr = find_type(dl->decl.type)) != NULL) && 422 ((dl->decl.rel == REL_ALIAS) || 423 (dl->decl.rel == REL_VECTOR))){ 424 if (i == 0) 425 cur = dl; 426 i++; 427 428 if (dl->decl.rel == REL_ALIAS) 429 size += ptr->length; 430 else { 431 /* this code is required to handle arrays */ 432 if (sizestr == NULL) 433 plus = ""; 434 else 435 plus = " + "; 436 437 if (ptr->length != 1) 438 s_print(ptemp, "%s%s * %d", 439 plus, dl->decl.array_max, 440 ptr->length); 441 else 442 s_print(ptemp, "%s%s", plus, 443 dl->decl.array_max); 444 445 /* now concatenate to sizestr !!!! */ 446 if (sizestr == NULL) 447 sizestr = strdup(ptemp); 448 else{ 449 sizestr = realloc(sizestr, 450 strlen(sizestr) 451 +strlen(ptemp)+1); 452 if (sizestr == NULL){ 453 f_print(stderr, 454 "Fatal error : no memory\n"); 455 crash(); 456 }; 457 sizestr = strcat(sizestr, ptemp); 458 /* build up length of array */ 459 } 460 } 461 } else { 462 if (i > 0) 463 if (sizestr == NULL && size < inline){ 464 /* 465 * don't expand into inline code 466 * if size < inline 467 */ 468 while (cur != dl){ 469 print_stat(indent + 1, &cur->decl); 470 cur = cur->next; 471 } 472 } else { 473 /* were already looking at a xdr_inlineable structure */ 474 tabify(fout, indent + 1); 475 if (sizestr == NULL) 476 f_print(fout, "buf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);", 477 size); 478 else 479 if (size == 0) 480 f_print(fout, 481 "buf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);", 482 sizestr); 483 else 484 f_print(fout, 485 "buf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);", 486 size, sizestr); 487 488 f_print(fout, "\n"); 489 tabify(fout, indent + 1); 490 f_print(fout, 491 "if (buf == NULL) {\n"); 492 493 psav = cur; 494 while (cur != dl){ 495 print_stat(indent + 2, &cur->decl); 496 cur = cur->next; 497 } 498 499 f_print(fout, "\n\t\t} else {\n"); 500 501 cur = psav; 502 while (cur != dl){ 503 emit_inline(indent + 2, &cur->decl, flag); 504 cur = cur->next; 505 } 506 507 tabify(fout, indent + 1); 508 f_print(fout, "}\n"); 509 } 510 size = 0; 511 i = 0; 512 sizestr = NULL; 513 print_stat(indent + 1, &dl->decl); 514 } 515 } 516 517 if (i > 0) 518 if (sizestr == NULL && size < inline){ 519 /* don't expand into inline code if size < inline */ 520 while (cur != dl){ 521 print_stat(indent + 1, &cur->decl); 522 cur = cur->next; 523 } 524 } else { 525 /* were already looking at a xdr_inlineable structure */ 526 if (sizestr == NULL) 527 f_print(fout, "\t\tbuf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);", 528 size); 529 else 530 if (size == 0) 531 f_print(fout, 532 "\t\tbuf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);", 533 sizestr); 534 else 535 f_print(fout, 536 "\t\tbuf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);", 537 size, sizestr); 538 539 f_print(fout, "\n\t\tif (buf == NULL) {\n"); 540 psav = cur; 541 while (cur != NULL){ 542 print_stat(indent + 2, &cur->decl); 543 cur = cur->next; 544 } 545 f_print(fout, "\t\t} else {\n"); 546 547 cur = psav; 548 while (cur != dl){ 549 emit_inline(indent + 2, &cur->decl, flag); 550 cur = cur->next; 551 } 552 f_print(fout, "\t\t}\n"); 553 } 554 } 555 556 static 557 emit_struct(def) 558 definition *def; 559 { 560 decl_list *dl; 561 int i, j, size, flag; 562 bas_type *ptr; 563 int can_inline; 564 565 if (inline == 0) { 566 /* No xdr_inlining at all */ 567 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 568 print_stat(1, &dl->decl); 569 return; 570 } 571 572 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 573 if (dl->decl.rel == REL_VECTOR){ 574 f_print(fout, "\tint i;\n"); 575 break; 576 } 577 578 size = 0; 579 can_inline = 0; 580 /* 581 * Make a first pass and see if inling is possible. 582 */ 583 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 584 if ((dl->decl.prefix == NULL) && 585 ((ptr = find_type(dl->decl.type)) != NULL) && 586 ((dl->decl.rel == REL_ALIAS)|| 587 (dl->decl.rel == REL_VECTOR))){ 588 if (dl->decl.rel == REL_ALIAS) 589 size += ptr->length; 590 else { 591 can_inline = 1; 592 break; /* can be inlined */ 593 } 594 } else { 595 if (size >= inline){ 596 can_inline = 1; 597 break; /* can be inlined */ 598 } 599 size = 0; 600 } 601 if (size >= inline) 602 can_inline = 1; 603 604 if (can_inline == 0){ /* can not inline, drop back to old mode */ 605 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 606 print_stat(1, &dl->decl); 607 return; 608 } 609 610 flag = PUT; 611 for (j = 0; j < 2; j++){ 612 inline_struct(def, flag); 613 if (flag == PUT) 614 flag = GET; 615 } 616 617 f_print(fout, "\t\treturn (TRUE);\n\t}\n\n"); 618 619 /* now take care of XDR_FREE case */ 620 621 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 622 print_stat(1, &dl->decl); 623 624 } 625 626 static 627 emit_typedef(def) 628 definition *def; 629 { 630 char *prefix = def->def.ty.old_prefix; 631 char *type = def->def.ty.old_type; 632 char *amax = def->def.ty.array_max; 633 relation rel = def->def.ty.rel; 634 635 print_ifstat(1, prefix, type, rel, amax, "objp", def->def_name); 636 } 637 638 static 639 print_stat(indent, dec) 640 int indent; 641 declaration *dec; 642 { 643 char *prefix = dec->prefix; 644 char *type = dec->type; 645 char *amax = dec->array_max; 646 relation rel = dec->rel; 647 char name[256]; 648 649 if (isvectordef(type, rel)) { 650 s_print(name, "objp->%s", dec->name); 651 } else { 652 s_print(name, "&objp->%s", dec->name); 653 } 654 print_ifstat(indent, prefix, type, rel, amax, name, dec->name); 655 } 656 657 658 char *upcase (); 659 660 emit_inline(indent, decl, flag) 661 int indent; 662 declaration *decl; 663 int flag; 664 { 665 switch (decl->rel) { 666 case REL_ALIAS : 667 emit_single_in_line(indent, decl, flag, REL_ALIAS); 668 break; 669 case REL_VECTOR : 670 tabify(fout, indent); 671 f_print(fout, "{\n"); 672 tabify(fout, indent + 1); 673 f_print(fout, "register %s *genp;\n\n", decl->type); 674 tabify(fout, indent + 1); 675 f_print(fout, 676 "for (i = 0, genp = objp->%s;\n", decl->name); 677 tabify(fout, indent + 2); 678 f_print(fout, "i < %s; i++) {\n", decl->array_max); 679 emit_single_in_line(indent + 2, decl, flag, REL_VECTOR); 680 tabify(fout, indent + 1); 681 f_print(fout, "}\n"); 682 tabify(fout, indent); 683 f_print(fout, "}\n"); 684 } 685 } 686 687 emit_single_in_line(indent, decl, flag, rel) 688 int indent; 689 declaration *decl; 690 int flag; 691 relation rel; 692 { 693 char *upp_case; 694 int freed = 0; 695 696 tabify(fout, indent); 697 if (flag == PUT) 698 f_print(fout, "IXDR_PUT_"); 699 else 700 if (rel == REL_ALIAS) 701 f_print(fout, "objp->%s = IXDR_GET_", decl->name); 702 else 703 f_print(fout, "*genp++ = IXDR_GET_"); 704 705 upp_case = upcase(decl->type); 706 707 /* hack - XX */ 708 if (strcmp(upp_case, "INT") == 0) 709 { 710 free(upp_case); 711 freed = 1; 712 upp_case = "LONG"; 713 } 714 715 if (strcmp(upp_case, "U_INT") == 0) 716 { 717 free(upp_case); 718 freed = 1; 719 upp_case = "U_LONG"; 720 } 721 if (flag == PUT) 722 if (rel == REL_ALIAS) 723 f_print(fout, 724 "%s(buf, objp->%s);\n", upp_case, decl->name); 725 else 726 f_print(fout, "%s(buf, *genp++);\n", upp_case); 727 728 else 729 f_print(fout, "%s(buf);\n", upp_case); 730 if (!freed) 731 free(upp_case); 732 } 733 734 char *upcase(str) 735 char *str; 736 { 737 char *ptr, *hptr; 738 739 ptr = (char *)malloc(strlen(str)+1); 740 if (ptr == (char *) NULL) 741 { 742 f_print(stderr, "malloc failed\n"); 743 exit(1); 744 }; 745 746 hptr = ptr; 747 while (*str != '\0') 748 *ptr++ = toupper(*str++); 749 750 *ptr = '\0'; 751 return (hptr); 752 } 753