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 #if 0 31 #ifndef lint 32 #ident "@(#)rpc_cout.c 1.14 93/07/05 SMI" 33 static char sccsid[] = "@(#)rpc_cout.c 1.13 89/02/22 (C) 1987 SMI"; 34 #endif 35 #endif 36 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 /* 41 * rpc_cout.c, XDR routine outputter for the RPC protocol compiler 42 * Copyright (C) 1987, Sun Microsystems, Inc. 43 */ 44 #include <ctype.h> 45 #include <stdio.h> 46 #include <string.h> 47 #include "rpc_parse.h" 48 #include "rpc_util.h" 49 50 static void print_header( definition * ); 51 static void print_trailer( void ); 52 static void print_stat( int , declaration * ); 53 static void emit_enum( definition * ); 54 static void emit_program( definition * ); 55 static void emit_union( definition * ); 56 static void emit_struct( definition * ); 57 static void emit_typedef( definition * ); 58 static void emit_inline( int, declaration *, int ); 59 static void emit_single_in_line( int, declaration *, int, relation ); 60 61 /* 62 * Emit the C-routine for the given definition 63 */ 64 void 65 emit(def) 66 definition *def; 67 { 68 if (def->def_kind == DEF_CONST) { 69 return; 70 } 71 if (def->def_kind == DEF_PROGRAM) { 72 emit_program(def); 73 return; 74 } 75 if (def->def_kind == DEF_TYPEDEF) { 76 /* 77 * now we need to handle declarations like 78 * struct typedef foo foo; 79 * since we dont want this to be expanded into 2 calls to xdr_foo 80 */ 81 82 if (strcmp(def->def.ty.old_type, def->def_name) == 0) 83 return; 84 }; 85 print_header(def); 86 switch (def->def_kind) { 87 case DEF_UNION: 88 emit_union(def); 89 break; 90 case DEF_ENUM: 91 emit_enum(def); 92 break; 93 case DEF_STRUCT: 94 emit_struct(def); 95 break; 96 case DEF_TYPEDEF: 97 emit_typedef(def); 98 break; 99 /* DEF_CONST and DEF_PROGRAM have already been handled */ 100 default: 101 break; 102 } 103 print_trailer(); 104 } 105 106 static int 107 findtype(def, type) 108 definition *def; 109 char *type; 110 { 111 112 if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST) { 113 return (0); 114 } else { 115 return (streq(def->def_name, type)); 116 } 117 } 118 119 static int 120 undefined(type) 121 char *type; 122 { 123 definition *def; 124 125 def = (definition *) FINDVAL(defined, type, findtype); 126 return (def == NULL); 127 } 128 129 130 static void 131 print_generic_header(procname, pointerp) 132 char* procname; 133 int pointerp; 134 { 135 f_print(fout, "\n"); 136 f_print(fout, "bool_t\n"); 137 if (Cflag) { 138 f_print(fout, "xdr_%s(", procname); 139 f_print(fout, "register XDR *xdrs, "); 140 f_print(fout, "%s ", procname); 141 if (pointerp) 142 f_print(fout, "*"); 143 f_print(fout, "objp)\n{\n\n"); 144 } else { 145 f_print(fout, "xdr_%s(xdrs, objp)\n", procname); 146 f_print(fout, "\tregister XDR *xdrs;\n"); 147 f_print(fout, "\t%s ", procname); 148 if (pointerp) 149 f_print(fout, "*"); 150 f_print(fout, "objp;\n{\n\n"); 151 } 152 } 153 154 static void 155 print_header(def) 156 definition *def; 157 { 158 print_generic_header(def->def_name, 159 def->def_kind != DEF_TYPEDEF || 160 !isvectordef(def->def.ty.old_type, 161 def->def.ty.rel)); 162 /* Now add Inline support */ 163 164 if (inline == 0) 165 return; 166 /* May cause lint to complain. but ... */ 167 f_print(fout, "\tregister long *buf;\n\n"); 168 } 169 170 static void 171 print_prog_header(plist) 172 proc_list *plist; 173 { 174 print_generic_header(plist->args.argname, 1); 175 } 176 177 static void 178 print_trailer() 179 { 180 f_print(fout, "\treturn (TRUE);\n"); 181 f_print(fout, "}\n"); 182 } 183 184 185 static void 186 print_ifopen(indent, name) 187 int indent; 188 char *name; 189 { 190 tabify(fout, indent); 191 f_print(fout, "if (!xdr_%s(xdrs", name); 192 } 193 194 static void 195 print_ifarg(arg) 196 char *arg; 197 { 198 f_print(fout, ", %s", arg); 199 } 200 201 static void 202 print_ifsizeof(indent, prefix, type) 203 int indent; 204 char *prefix; 205 char *type; 206 { 207 if (indent) { 208 f_print(fout, ",\n"); 209 tabify(fout, indent); 210 } else { 211 f_print(fout, ", "); 212 } 213 if (streq(type, "bool")) { 214 f_print(fout, "sizeof (bool_t), (xdrproc_t) xdr_bool"); 215 } else { 216 f_print(fout, "sizeof ("); 217 if (undefined(type) && prefix) { 218 f_print(fout, "%s ", prefix); 219 } 220 f_print(fout, "%s), (xdrproc_t) xdr_%s", type, type); 221 } 222 } 223 224 static void 225 print_ifclose(indent) 226 int indent; 227 { 228 f_print(fout, "))\n"); 229 tabify(fout, indent); 230 f_print(fout, "\treturn (FALSE);\n"); 231 } 232 233 static void 234 print_ifstat(indent, prefix, type, rel, amax, objname, name) 235 int indent; 236 char *prefix; 237 char *type; 238 relation rel; 239 char *amax; 240 char *objname; 241 char *name; 242 { 243 char *alt = NULL; 244 245 switch (rel) { 246 case REL_POINTER: 247 print_ifopen(indent, "pointer"); 248 print_ifarg("(char **)"); 249 f_print(fout, "%s", objname); 250 print_ifsizeof(0, prefix, type); 251 break; 252 case REL_VECTOR: 253 if (streq(type, "string")) { 254 alt = "string"; 255 } else if (streq(type, "opaque")) { 256 alt = "opaque"; 257 } 258 if (alt) { 259 print_ifopen(indent, alt); 260 print_ifarg(objname); 261 } else { 262 print_ifopen(indent, "vector"); 263 print_ifarg("(char *)"); 264 f_print(fout, "%s", objname); 265 } 266 print_ifarg(amax); 267 if (!alt) { 268 print_ifsizeof(indent + 1, prefix, type); 269 } 270 break; 271 case REL_ARRAY: 272 if (streq(type, "string")) { 273 alt = "string"; 274 } else if (streq(type, "opaque")) { 275 alt = "bytes"; 276 } 277 if (streq(type, "string")) { 278 print_ifopen(indent, alt); 279 print_ifarg(objname); 280 } else { 281 if (alt) { 282 print_ifopen(indent, alt); 283 } else { 284 print_ifopen(indent, "array"); 285 } 286 print_ifarg("(char **)"); 287 if (*objname == '&') { 288 f_print(fout, "%s.%s_val, (u_int *) %s.%s_len", 289 objname, name, objname, name); 290 } else { 291 f_print(fout, 292 "&%s->%s_val, (u_int *) &%s->%s_len", 293 objname, name, objname, name); 294 } 295 } 296 print_ifarg(amax); 297 if (!alt) { 298 print_ifsizeof(indent + 1, prefix, type); 299 } 300 break; 301 case REL_ALIAS: 302 print_ifopen(indent, type); 303 print_ifarg(objname); 304 break; 305 } 306 print_ifclose(indent); 307 } 308 309 /* ARGSUSED */ 310 static void 311 emit_enum(def) 312 definition *def; 313 { 314 print_ifopen(1, "enum"); 315 print_ifarg("(enum_t *)objp"); 316 print_ifclose(1); 317 } 318 319 static void 320 emit_program(def) 321 definition *def; 322 { 323 decl_list *dl; 324 version_list *vlist; 325 proc_list *plist; 326 327 for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next) 328 for (plist = vlist->procs; plist != NULL; plist = plist->next) { 329 if (!newstyle || plist->arg_num < 2) 330 continue; /* old style, or single argument */ 331 print_prog_header(plist); 332 for (dl = plist->args.decls; dl != NULL; 333 dl = dl->next) 334 print_stat(1, &dl->decl); 335 print_trailer(); 336 } 337 } 338 339 340 static void 341 emit_union(def) 342 definition *def; 343 { 344 declaration *dflt; 345 case_list *cl; 346 declaration *cs; 347 char *object; 348 char *vecformat = "objp->%s_u.%s"; 349 char *format = "&objp->%s_u.%s"; 350 351 print_stat(1, &def->def.un.enum_decl); 352 f_print(fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name); 353 for (cl = def->def.un.cases; cl != NULL; cl = cl->next) { 354 355 f_print(fout, "\tcase %s:\n", cl->case_name); 356 if (cl->contflag == 1) /* a continued case statement */ 357 continue; 358 cs = &cl->case_decl; 359 if (!streq(cs->type, "void")) { 360 object = xmalloc(strlen(def->def_name) + 361 strlen(format) + strlen(cs->name) + 1); 362 if (isvectordef (cs->type, cs->rel)) { 363 s_print(object, vecformat, def->def_name, 364 cs->name); 365 } else { 366 s_print(object, format, def->def_name, 367 cs->name); 368 } 369 print_ifstat(2, cs->prefix, cs->type, cs->rel, 370 cs->array_max, object, cs->name); 371 free(object); 372 } 373 f_print(fout, "\t\tbreak;\n"); 374 } 375 dflt = def->def.un.default_decl; 376 if (dflt != NULL) { 377 if (!streq(dflt->type, "void")) { 378 f_print(fout, "\tdefault:\n"); 379 object = xmalloc(strlen(def->def_name) + 380 strlen(format) + strlen(dflt->name) + 1); 381 if (isvectordef (dflt->type, dflt->rel)) { 382 s_print(object, vecformat, def->def_name, 383 dflt->name); 384 } else { 385 s_print(object, format, def->def_name, 386 dflt->name); 387 } 388 389 print_ifstat(2, dflt->prefix, dflt->type, dflt->rel, 390 dflt->array_max, object, dflt->name); 391 free(object); 392 f_print(fout, "\t\tbreak;\n"); 393 } else { 394 f_print(fout, "\tdefault:\n"); 395 f_print(fout, "\t\tbreak;\n"); 396 } 397 } else { 398 f_print(fout, "\tdefault:\n"); 399 f_print(fout, "\t\treturn (FALSE);\n"); 400 } 401 402 f_print(fout, "\t}\n"); 403 } 404 405 static void 406 inline_struct(def, flag) 407 definition *def; 408 int flag; 409 { 410 decl_list *dl; 411 int i, size; 412 decl_list *cur, *psav; 413 bas_type *ptr; 414 char *sizestr, *plus; 415 char ptemp[256]; 416 int indent = 1; 417 418 cur = NULL; 419 if (flag == PUT) 420 f_print(fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n"); 421 else 422 f_print(fout, "\t\treturn (TRUE);\n\t} else if (xdrs->x_op == XDR_DECODE) {\n"); 423 424 i = 0; 425 size = 0; 426 sizestr = NULL; 427 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) { /* xxx */ 428 /* now walk down the list and check for basic types */ 429 if ((dl->decl.prefix == NULL) && 430 ((ptr = find_type(dl->decl.type)) != NULL) && 431 ((dl->decl.rel == REL_ALIAS) || 432 (dl->decl.rel == REL_VECTOR))){ 433 if (i == 0) 434 cur = dl; 435 i++; 436 437 if (dl->decl.rel == REL_ALIAS) 438 size += ptr->length; 439 else { 440 /* this code is required to handle arrays */ 441 if (sizestr == NULL) 442 plus = ""; 443 else 444 plus = " + "; 445 446 if (ptr->length != 1) 447 s_print(ptemp, "%s%s * %d", 448 plus, dl->decl.array_max, 449 ptr->length); 450 else 451 s_print(ptemp, "%s%s", plus, 452 dl->decl.array_max); 453 454 /* now concatenate to sizestr !!!! */ 455 if (sizestr == NULL) { 456 sizestr = xstrdup(ptemp); 457 } 458 else{ 459 sizestr = xrealloc(sizestr, 460 strlen(sizestr) 461 +strlen(ptemp)+1); 462 sizestr = strcat(sizestr, ptemp); 463 /* build up length of array */ 464 } 465 } 466 } else { 467 if (i > 0) { 468 if (sizestr == NULL && size < inline){ 469 /* 470 * don't expand into inline code 471 * if size < inline 472 */ 473 while (cur != dl){ 474 print_stat(indent + 1, &cur->decl); 475 cur = cur->next; 476 } 477 } else { 478 /* were already looking at a xdr_inlineable structure */ 479 tabify(fout, indent + 1); 480 if (sizestr == NULL) 481 f_print(fout, "buf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);", 482 size); 483 else { 484 if (size == 0) 485 f_print(fout, 486 "buf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);", 487 sizestr); 488 else 489 f_print(fout, 490 "buf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);", 491 size, sizestr); 492 493 } 494 f_print(fout, "\n"); 495 tabify(fout, indent + 1); 496 f_print(fout, 497 "if (buf == NULL) {\n"); 498 499 psav = cur; 500 while (cur != dl){ 501 print_stat(indent + 2, &cur->decl); 502 cur = cur->next; 503 } 504 505 f_print(fout, "\n\t\t} else {\n"); 506 507 cur = psav; 508 while (cur != dl){ 509 emit_inline(indent + 2, &cur->decl, flag); 510 cur = cur->next; 511 } 512 513 tabify(fout, indent + 1); 514 f_print(fout, "}\n"); 515 } 516 } 517 size = 0; 518 i = 0; 519 sizestr = NULL; 520 print_stat(indent + 1, &dl->decl); 521 } 522 } 523 524 if (i > 0) { 525 if (sizestr == NULL && size < inline){ 526 /* don't expand into inline code if size < inline */ 527 while (cur != dl){ 528 print_stat(indent + 1, &cur->decl); 529 cur = cur->next; 530 } 531 } else { 532 /* were already looking at a xdr_inlineable structure */ 533 if (sizestr == NULL) 534 f_print(fout, "\t\tbuf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);", 535 size); 536 else 537 if (size == 0) 538 f_print(fout, 539 "\t\tbuf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);", 540 sizestr); 541 else 542 f_print(fout, 543 "\t\tbuf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);", 544 size, sizestr); 545 546 f_print(fout, "\n\t\tif (buf == NULL) {\n"); 547 psav = cur; 548 while (cur != NULL){ 549 print_stat(indent + 2, &cur->decl); 550 cur = cur->next; 551 } 552 f_print(fout, "\t\t} else {\n"); 553 554 cur = psav; 555 while (cur != dl){ 556 emit_inline(indent + 2, &cur->decl, flag); 557 cur = cur->next; 558 } 559 f_print(fout, "\t\t}\n"); 560 } 561 } 562 } 563 564 static void 565 emit_struct(def) 566 definition *def; 567 { 568 decl_list *dl; 569 int j, size, flag; 570 bas_type *ptr; 571 int can_inline; 572 573 if (inline == 0) { 574 /* No xdr_inlining at all */ 575 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 576 print_stat(1, &dl->decl); 577 return; 578 } 579 580 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 581 if (dl->decl.rel == REL_VECTOR){ 582 f_print(fout, "\tint i;\n"); 583 break; 584 } 585 586 size = 0; 587 can_inline = 0; 588 /* 589 * Make a first pass and see if inling is possible. 590 */ 591 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 592 if ((dl->decl.prefix == NULL) && 593 ((ptr = find_type(dl->decl.type)) != NULL) && 594 ((dl->decl.rel == REL_ALIAS)|| 595 (dl->decl.rel == REL_VECTOR))){ 596 if (dl->decl.rel == REL_ALIAS) 597 size += ptr->length; 598 else { 599 can_inline = 1; 600 break; /* can be inlined */ 601 } 602 } else { 603 if (size >= inline){ 604 can_inline = 1; 605 break; /* can be inlined */ 606 } 607 size = 0; 608 } 609 if (size >= inline) 610 can_inline = 1; 611 612 if (can_inline == 0){ /* can not inline, drop back to old mode */ 613 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 614 print_stat(1, &dl->decl); 615 return; 616 } 617 618 flag = PUT; 619 for (j = 0; j < 2; j++){ 620 inline_struct(def, flag); 621 if (flag == PUT) 622 flag = GET; 623 } 624 625 f_print(fout, "\t\treturn (TRUE);\n\t}\n\n"); 626 627 /* now take care of XDR_FREE case */ 628 629 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 630 print_stat(1, &dl->decl); 631 632 } 633 634 static void 635 emit_typedef(def) 636 definition *def; 637 { 638 char *prefix = def->def.ty.old_prefix; 639 char *type = def->def.ty.old_type; 640 char *amax = def->def.ty.array_max; 641 relation rel = def->def.ty.rel; 642 643 print_ifstat(1, prefix, type, rel, amax, "objp", def->def_name); 644 } 645 646 static void 647 print_stat(indent, dec) 648 int indent; 649 declaration *dec; 650 { 651 char *prefix = dec->prefix; 652 char *type = dec->type; 653 char *amax = dec->array_max; 654 relation rel = dec->rel; 655 char name[256]; 656 657 if (isvectordef(type, rel)) { 658 s_print(name, "objp->%s", dec->name); 659 } else { 660 s_print(name, "&objp->%s", dec->name); 661 } 662 print_ifstat(indent, prefix, type, rel, amax, name, dec->name); 663 } 664 665 666 char *upcase (); 667 668 static void 669 emit_inline(indent, decl, flag) 670 int indent; 671 declaration *decl; 672 int flag; 673 { 674 switch (decl->rel) { 675 case REL_ALIAS : 676 emit_single_in_line(indent, decl, flag, REL_ALIAS); 677 break; 678 case REL_VECTOR : 679 tabify(fout, indent); 680 f_print(fout, "{\n"); 681 tabify(fout, indent + 1); 682 f_print(fout, "register %s *genp;\n\n", decl->type); 683 tabify(fout, indent + 1); 684 f_print(fout, 685 "for (i = 0, genp = objp->%s;\n", decl->name); 686 tabify(fout, indent + 2); 687 f_print(fout, "i < %s; i++) {\n", decl->array_max); 688 emit_single_in_line(indent + 2, decl, flag, REL_VECTOR); 689 tabify(fout, indent + 1); 690 f_print(fout, "}\n"); 691 tabify(fout, indent); 692 f_print(fout, "}\n"); 693 break; 694 default: 695 break; 696 } 697 } 698 699 static void 700 emit_single_in_line(indent, decl, flag, rel) 701 int indent; 702 declaration *decl; 703 int flag; 704 relation rel; 705 { 706 char *upp_case; 707 int freed = 0; 708 709 tabify(fout, indent); 710 if (flag == PUT) 711 f_print(fout, "IXDR_PUT_"); 712 else 713 if (rel == REL_ALIAS) 714 f_print(fout, "objp->%s = IXDR_GET_", decl->name); 715 else 716 f_print(fout, "*genp++ = IXDR_GET_"); 717 718 upp_case = upcase(decl->type); 719 720 /* hack - XX */ 721 if (strcmp(upp_case, "INT") == 0) 722 { 723 free(upp_case); 724 freed = 1; 725 upp_case = "LONG"; 726 } 727 728 if (strcmp(upp_case, "U_INT") == 0) 729 { 730 free(upp_case); 731 freed = 1; 732 upp_case = "U_LONG"; 733 } 734 if (flag == PUT) 735 if (rel == REL_ALIAS) 736 f_print(fout, 737 "%s(buf, objp->%s);\n", upp_case, decl->name); 738 else 739 f_print(fout, "%s(buf, *genp++);\n", upp_case); 740 741 else 742 f_print(fout, "%s(buf);\n", upp_case); 743 if (!freed) 744 free(upp_case); 745 } 746 747 char *upcase(str) 748 char *str; 749 { 750 char *ptr, *hptr; 751 752 ptr = (char *)xmalloc(strlen(str)+1); 753 754 hptr = ptr; 755 while (*str != '\0') 756 *ptr++ = toupper(*str++); 757 758 *ptr = '\0'; 759 return (hptr); 760 } 761