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 #if 0 34 static char sccsid[] = "@(#)rpc_cout.c 1.13 89/02/22 (C) 1987 SMI"; 35 #endif 36 static const char rcsid[] = 37 "$FreeBSD$"; 38 #endif 39 40 /* 41 * rpc_cout.c, XDR routine outputter for the RPC protocol compiler 42 * Copyright (C) 1987, Sun Microsystems, Inc. 43 */ 44 #include <err.h> 45 #include <ctype.h> 46 #include <stdio.h> 47 #include <string.h> 48 #include "rpc_parse.h" 49 #include "rpc_util.h" 50 51 static void print_header( definition * ); 52 static void print_trailer( void ); 53 static void print_stat( int , declaration * ); 54 static void emit_enum( definition * ); 55 static void emit_program( definition * ); 56 static void emit_union( definition * ); 57 static void emit_struct( definition * ); 58 static void emit_typedef( definition * ); 59 static void emit_inline( int, declaration *, int ); 60 static void emit_single_in_line( int, declaration *, int, relation ); 61 62 /* 63 * Emit the C-routine for the given definition 64 */ 65 void 66 emit(def) 67 definition *def; 68 { 69 if (def->def_kind == DEF_CONST) { 70 return; 71 } 72 if (def->def_kind == DEF_PROGRAM) { 73 emit_program(def); 74 return; 75 } 76 if (def->def_kind == DEF_TYPEDEF) { 77 /* 78 * now we need to handle declarations like 79 * struct typedef foo foo; 80 * since we dont want this to be expanded into 2 calls to xdr_foo 81 */ 82 83 if (strcmp(def->def.ty.old_type, def->def_name) == 0) 84 return; 85 }; 86 print_header(def); 87 switch (def->def_kind) { 88 case DEF_UNION: 89 emit_union(def); 90 break; 91 case DEF_ENUM: 92 emit_enum(def); 93 break; 94 case DEF_STRUCT: 95 emit_struct(def); 96 break; 97 case DEF_TYPEDEF: 98 emit_typedef(def); 99 break; 100 /* DEF_CONST and DEF_PROGRAM have already been handled */ 101 default: 102 break; 103 } 104 print_trailer(); 105 } 106 107 static int 108 findtype(def, type) 109 definition *def; 110 char *type; 111 { 112 113 if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST) { 114 return (0); 115 } else { 116 return (streq(def->def_name, type)); 117 } 118 } 119 120 static int 121 undefined(type) 122 char *type; 123 { 124 definition *def; 125 126 def = (definition *) FINDVAL(defined, type, findtype); 127 return (def == NULL); 128 } 129 130 131 static void 132 print_generic_header(procname, pointerp) 133 char* procname; 134 int pointerp; 135 { 136 f_print(fout, "\n"); 137 f_print(fout, "bool_t\n"); 138 if (Cflag) { 139 f_print(fout, "xdr_%s(", procname); 140 f_print(fout, "register XDR *xdrs, "); 141 f_print(fout, "%s ", procname); 142 if (pointerp) 143 f_print(fout, "*"); 144 f_print(fout, "objp)\n{\n\n"); 145 } else { 146 f_print(fout, "xdr_%s(xdrs, objp)\n", procname); 147 f_print(fout, "\tregister XDR *xdrs;\n"); 148 f_print(fout, "\t%s ", procname); 149 if (pointerp) 150 f_print(fout, "*"); 151 f_print(fout, "objp;\n{\n\n"); 152 } 153 } 154 155 static void 156 print_header(def) 157 definition *def; 158 { 159 print_generic_header(def->def_name, 160 def->def_kind != DEF_TYPEDEF || 161 !isvectordef(def->def.ty.old_type, 162 def->def.ty.rel)); 163 /* Now add Inline support */ 164 165 if (inline == 0) 166 return; 167 /* May cause lint to complain. but ... */ 168 f_print(fout, "\tregister long *buf;\n\n"); 169 } 170 171 static void 172 print_prog_header(plist) 173 proc_list *plist; 174 { 175 print_generic_header(plist->args.argname, 1); 176 } 177 178 static void 179 print_trailer() 180 { 181 f_print(fout, "\treturn (TRUE);\n"); 182 f_print(fout, "}\n"); 183 } 184 185 186 static void 187 print_ifopen(indent, name) 188 int indent; 189 char *name; 190 { 191 tabify(fout, indent); 192 f_print(fout, "if (!xdr_%s(xdrs", name); 193 } 194 195 static void 196 print_ifarg(arg) 197 char *arg; 198 { 199 f_print(fout, ", %s", arg); 200 } 201 202 static void 203 print_ifsizeof(indent, prefix, type) 204 int indent; 205 char *prefix; 206 char *type; 207 { 208 if (indent) { 209 f_print(fout, ",\n"); 210 tabify(fout, indent); 211 } else { 212 f_print(fout, ", "); 213 } 214 if (streq(type, "bool")) { 215 f_print(fout, "sizeof (bool_t), (xdrproc_t) xdr_bool"); 216 } else { 217 f_print(fout, "sizeof ("); 218 if (undefined(type) && prefix) { 219 f_print(fout, "%s ", prefix); 220 } 221 f_print(fout, "%s), (xdrproc_t) xdr_%s", type, type); 222 } 223 } 224 225 static void 226 print_ifclose(indent) 227 int indent; 228 { 229 f_print(fout, "))\n"); 230 tabify(fout, indent); 231 f_print(fout, "\treturn (FALSE);\n"); 232 } 233 234 static void 235 print_ifstat(indent, prefix, type, rel, amax, objname, name) 236 int indent; 237 char *prefix; 238 char *type; 239 relation rel; 240 char *amax; 241 char *objname; 242 char *name; 243 { 244 char *alt = NULL; 245 246 switch (rel) { 247 case REL_POINTER: 248 print_ifopen(indent, "pointer"); 249 print_ifarg("(char **)"); 250 f_print(fout, "%s", objname); 251 print_ifsizeof(0, prefix, type); 252 break; 253 case REL_VECTOR: 254 if (streq(type, "string")) { 255 alt = "string"; 256 } else if (streq(type, "opaque")) { 257 alt = "opaque"; 258 } 259 if (alt) { 260 print_ifopen(indent, alt); 261 print_ifarg(objname); 262 } else { 263 print_ifopen(indent, "vector"); 264 print_ifarg("(char *)"); 265 f_print(fout, "%s", objname); 266 } 267 print_ifarg(amax); 268 if (!alt) { 269 print_ifsizeof(indent + 1, prefix, type); 270 } 271 break; 272 case REL_ARRAY: 273 if (streq(type, "string")) { 274 alt = "string"; 275 } else if (streq(type, "opaque")) { 276 alt = "bytes"; 277 } 278 if (streq(type, "string")) { 279 print_ifopen(indent, alt); 280 print_ifarg(objname); 281 } else { 282 if (alt) { 283 print_ifopen(indent, alt); 284 } else { 285 print_ifopen(indent, "array"); 286 } 287 print_ifarg("(char **)"); 288 if (*objname == '&') { 289 f_print(fout, "%s.%s_val, (u_int *) %s.%s_len", 290 objname, name, objname, name); 291 } else { 292 f_print(fout, 293 "&%s->%s_val, (u_int *) &%s->%s_len", 294 objname, name, objname, name); 295 } 296 } 297 print_ifarg(amax); 298 if (!alt) { 299 print_ifsizeof(indent + 1, prefix, type); 300 } 301 break; 302 case REL_ALIAS: 303 print_ifopen(indent, type); 304 print_ifarg(objname); 305 break; 306 } 307 print_ifclose(indent); 308 } 309 310 /* ARGSUSED */ 311 static void 312 emit_enum(def) 313 definition *def; 314 { 315 print_ifopen(1, "enum"); 316 print_ifarg("(enum_t *)objp"); 317 print_ifclose(1); 318 } 319 320 static void 321 emit_program(def) 322 definition *def; 323 { 324 decl_list *dl; 325 version_list *vlist; 326 proc_list *plist; 327 328 for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next) 329 for (plist = vlist->procs; plist != NULL; plist = plist->next) { 330 if (!newstyle || plist->arg_num < 2) 331 continue; /* old style, or single argument */ 332 print_prog_header(plist); 333 for (dl = plist->args.decls; dl != NULL; 334 dl = dl->next) 335 print_stat(1, &dl->decl); 336 print_trailer(); 337 } 338 } 339 340 341 static void 342 emit_union(def) 343 definition *def; 344 { 345 declaration *dflt; 346 case_list *cl; 347 declaration *cs; 348 char *object; 349 char *vecformat = "objp->%s_u.%s"; 350 char *format = "&objp->%s_u.%s"; 351 352 print_stat(1, &def->def.un.enum_decl); 353 f_print(fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name); 354 for (cl = def->def.un.cases; cl != NULL; cl = cl->next) { 355 356 f_print(fout, "\tcase %s:\n", cl->case_name); 357 if (cl->contflag == 1) /* a continued case statement */ 358 continue; 359 cs = &cl->case_decl; 360 if (!streq(cs->type, "void")) { 361 object = alloc(strlen(def->def_name) + strlen(format) + 362 strlen(cs->name) + 1); 363 if (isvectordef (cs->type, cs->rel)) { 364 s_print(object, vecformat, def->def_name, 365 cs->name); 366 } else { 367 s_print(object, format, def->def_name, 368 cs->name); 369 } 370 print_ifstat(2, cs->prefix, cs->type, cs->rel, 371 cs->array_max, object, cs->name); 372 free(object); 373 } 374 f_print(fout, "\t\tbreak;\n"); 375 } 376 dflt = def->def.un.default_decl; 377 if (dflt != NULL) { 378 if (!streq(dflt->type, "void")) { 379 f_print(fout, "\tdefault:\n"); 380 object = alloc(strlen(def->def_name) + strlen(format) + 381 strlen(dflt->name) + 1); 382 if (isvectordef (dflt->type, dflt->rel)) { 383 s_print(object, vecformat, def->def_name, 384 dflt->name); 385 } else { 386 s_print(object, format, def->def_name, 387 dflt->name); 388 } 389 390 print_ifstat(2, dflt->prefix, dflt->type, dflt->rel, 391 dflt->array_max, object, dflt->name); 392 free(object); 393 f_print(fout, "\t\tbreak;\n"); 394 } else { 395 f_print(fout, "\tdefault:\n"); 396 f_print(fout, "\t\tbreak;\n"); 397 } 398 } else { 399 f_print(fout, "\tdefault:\n"); 400 f_print(fout, "\t\treturn (FALSE);\n"); 401 } 402 403 f_print(fout, "\t}\n"); 404 } 405 406 static void 407 inline_struct(def, flag) 408 definition *def; 409 int flag; 410 { 411 decl_list *dl; 412 int i, size; 413 decl_list *cur, *psav; 414 bas_type *ptr; 415 char *sizestr, *plus; 416 char ptemp[256]; 417 int indent = 1; 418 419 cur = NULL; 420 if (flag == PUT) 421 f_print(fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n"); 422 else 423 f_print(fout, "\t\treturn (TRUE);\n\t} else if (xdrs->x_op == XDR_DECODE) {\n"); 424 425 i = 0; 426 size = 0; 427 sizestr = NULL; 428 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) { /* xxx */ 429 /* now walk down the list and check for basic types */ 430 if ((dl->decl.prefix == NULL) && 431 ((ptr = find_type(dl->decl.type)) != NULL) && 432 ((dl->decl.rel == REL_ALIAS) || 433 (dl->decl.rel == REL_VECTOR))){ 434 if (i == 0) 435 cur = dl; 436 i++; 437 438 if (dl->decl.rel == REL_ALIAS) 439 size += ptr->length; 440 else { 441 /* this code is required to handle arrays */ 442 if (sizestr == NULL) 443 plus = ""; 444 else 445 plus = " + "; 446 447 if (ptr->length != 1) 448 s_print(ptemp, "%s%s * %d", 449 plus, dl->decl.array_max, 450 ptr->length); 451 else 452 s_print(ptemp, "%s%s", plus, 453 dl->decl.array_max); 454 455 /* now concatenate to sizestr !!!! */ 456 if (sizestr == NULL) 457 sizestr = strdup(ptemp); 458 else{ 459 sizestr = realloc(sizestr, 460 strlen(sizestr) 461 +strlen(ptemp)+1); 462 if (sizestr == NULL){ 463 warnx("fatal error: no memory"); 464 crash(); 465 }; 466 sizestr = strcat(sizestr, ptemp); 467 /* build up length of array */ 468 } 469 } 470 } else { 471 if (i > 0) { 472 if (sizestr == NULL && size < inline){ 473 /* 474 * don't expand into inline code 475 * if size < inline 476 */ 477 while (cur != dl){ 478 print_stat(indent + 1, &cur->decl); 479 cur = cur->next; 480 } 481 } else { 482 /* were already looking at a xdr_inlineable structure */ 483 tabify(fout, indent + 1); 484 if (sizestr == NULL) 485 f_print(fout, "buf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);", 486 size); 487 else { 488 if (size == 0) 489 f_print(fout, 490 "buf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);", 491 sizestr); 492 else 493 f_print(fout, 494 "buf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);", 495 size, sizestr); 496 497 } 498 f_print(fout, "\n"); 499 tabify(fout, indent + 1); 500 f_print(fout, 501 "if (buf == NULL) {\n"); 502 503 psav = cur; 504 while (cur != dl){ 505 print_stat(indent + 2, &cur->decl); 506 cur = cur->next; 507 } 508 509 f_print(fout, "\n\t\t} else {\n"); 510 511 cur = psav; 512 while (cur != dl){ 513 emit_inline(indent + 2, &cur->decl, flag); 514 cur = cur->next; 515 } 516 517 tabify(fout, indent + 1); 518 f_print(fout, "}\n"); 519 } 520 } 521 size = 0; 522 i = 0; 523 sizestr = NULL; 524 print_stat(indent + 1, &dl->decl); 525 } 526 } 527 528 if (i > 0) { 529 if (sizestr == NULL && size < inline){ 530 /* don't expand into inline code if size < inline */ 531 while (cur != dl){ 532 print_stat(indent + 1, &cur->decl); 533 cur = cur->next; 534 } 535 } else { 536 /* were already looking at a xdr_inlineable structure */ 537 if (sizestr == NULL) 538 f_print(fout, "\t\tbuf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);", 539 size); 540 else 541 if (size == 0) 542 f_print(fout, 543 "\t\tbuf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);", 544 sizestr); 545 else 546 f_print(fout, 547 "\t\tbuf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);", 548 size, sizestr); 549 550 f_print(fout, "\n\t\tif (buf == NULL) {\n"); 551 psav = cur; 552 while (cur != NULL){ 553 print_stat(indent + 2, &cur->decl); 554 cur = cur->next; 555 } 556 f_print(fout, "\t\t} else {\n"); 557 558 cur = psav; 559 while (cur != dl){ 560 emit_inline(indent + 2, &cur->decl, flag); 561 cur = cur->next; 562 } 563 f_print(fout, "\t\t}\n"); 564 } 565 } 566 } 567 568 static void 569 emit_struct(def) 570 definition *def; 571 { 572 decl_list *dl; 573 int j, size, flag; 574 bas_type *ptr; 575 int can_inline; 576 577 if (inline == 0) { 578 /* No xdr_inlining at all */ 579 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 580 print_stat(1, &dl->decl); 581 return; 582 } 583 584 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 585 if (dl->decl.rel == REL_VECTOR){ 586 f_print(fout, "\tint i;\n"); 587 break; 588 } 589 590 size = 0; 591 can_inline = 0; 592 /* 593 * Make a first pass and see if inling is possible. 594 */ 595 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 596 if ((dl->decl.prefix == NULL) && 597 ((ptr = find_type(dl->decl.type)) != NULL) && 598 ((dl->decl.rel == REL_ALIAS)|| 599 (dl->decl.rel == REL_VECTOR))){ 600 if (dl->decl.rel == REL_ALIAS) 601 size += ptr->length; 602 else { 603 can_inline = 1; 604 break; /* can be inlined */ 605 } 606 } else { 607 if (size >= inline){ 608 can_inline = 1; 609 break; /* can be inlined */ 610 } 611 size = 0; 612 } 613 if (size >= inline) 614 can_inline = 1; 615 616 if (can_inline == 0){ /* can not inline, drop back to old mode */ 617 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 618 print_stat(1, &dl->decl); 619 return; 620 } 621 622 flag = PUT; 623 for (j = 0; j < 2; j++){ 624 inline_struct(def, flag); 625 if (flag == PUT) 626 flag = GET; 627 } 628 629 f_print(fout, "\t\treturn (TRUE);\n\t}\n\n"); 630 631 /* now take care of XDR_FREE case */ 632 633 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 634 print_stat(1, &dl->decl); 635 636 } 637 638 static void 639 emit_typedef(def) 640 definition *def; 641 { 642 char *prefix = def->def.ty.old_prefix; 643 char *type = def->def.ty.old_type; 644 char *amax = def->def.ty.array_max; 645 relation rel = def->def.ty.rel; 646 647 print_ifstat(1, prefix, type, rel, amax, "objp", def->def_name); 648 } 649 650 static void 651 print_stat(indent, dec) 652 int indent; 653 declaration *dec; 654 { 655 char *prefix = dec->prefix; 656 char *type = dec->type; 657 char *amax = dec->array_max; 658 relation rel = dec->rel; 659 char name[256]; 660 661 if (isvectordef(type, rel)) { 662 s_print(name, "objp->%s", dec->name); 663 } else { 664 s_print(name, "&objp->%s", dec->name); 665 } 666 print_ifstat(indent, prefix, type, rel, amax, name, dec->name); 667 } 668 669 670 char *upcase (); 671 672 static void 673 emit_inline(indent, decl, flag) 674 int indent; 675 declaration *decl; 676 int flag; 677 { 678 switch (decl->rel) { 679 case REL_ALIAS : 680 emit_single_in_line(indent, decl, flag, REL_ALIAS); 681 break; 682 case REL_VECTOR : 683 tabify(fout, indent); 684 f_print(fout, "{\n"); 685 tabify(fout, indent + 1); 686 f_print(fout, "register %s *genp;\n\n", decl->type); 687 tabify(fout, indent + 1); 688 f_print(fout, 689 "for (i = 0, genp = objp->%s;\n", decl->name); 690 tabify(fout, indent + 2); 691 f_print(fout, "i < %s; i++) {\n", decl->array_max); 692 emit_single_in_line(indent + 2, decl, flag, REL_VECTOR); 693 tabify(fout, indent + 1); 694 f_print(fout, "}\n"); 695 tabify(fout, indent); 696 f_print(fout, "}\n"); 697 break; 698 default: 699 break; 700 } 701 } 702 703 static void 704 emit_single_in_line(indent, decl, flag, rel) 705 int indent; 706 declaration *decl; 707 int flag; 708 relation rel; 709 { 710 char *upp_case; 711 int freed = 0; 712 713 tabify(fout, indent); 714 if (flag == PUT) 715 f_print(fout, "IXDR_PUT_"); 716 else 717 if (rel == REL_ALIAS) 718 f_print(fout, "objp->%s = IXDR_GET_", decl->name); 719 else 720 f_print(fout, "*genp++ = IXDR_GET_"); 721 722 upp_case = upcase(decl->type); 723 724 /* hack - XX */ 725 if (strcmp(upp_case, "INT") == 0) 726 { 727 free(upp_case); 728 freed = 1; 729 upp_case = "LONG"; 730 } 731 732 if (strcmp(upp_case, "U_INT") == 0) 733 { 734 free(upp_case); 735 freed = 1; 736 upp_case = "U_LONG"; 737 } 738 if (flag == PUT) 739 if (rel == REL_ALIAS) 740 f_print(fout, 741 "%s(buf, objp->%s);\n", upp_case, decl->name); 742 else 743 f_print(fout, "%s(buf, *genp++);\n", upp_case); 744 745 else 746 f_print(fout, "%s(buf);\n", upp_case); 747 if (!freed) 748 free(upp_case); 749 } 750 751 char *upcase(str) 752 char *str; 753 { 754 char *ptr, *hptr; 755 756 ptr = (char *)malloc(strlen(str)+1); 757 if (ptr == (char *) NULL) 758 errx(1, "malloc failed"); 759 760 hptr = ptr; 761 while (*str != '\0') 762 *ptr++ = toupper(*str++); 763 764 *ptr = '\0'; 765 return (hptr); 766 } 767