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 } 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 = alloc(strlen(def->def_name) + strlen(format) + 361 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 = alloc(strlen(def->def_name) + strlen(format) + 380 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 if (flag == PUT) 419 f_print(fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n"); 420 else 421 f_print(fout, "\t\treturn (TRUE);\n\t} else if (xdrs->x_op == XDR_DECODE) {\n"); 422 423 i = 0; 424 size = 0; 425 sizestr = NULL; 426 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) { /* xxx */ 427 /* now walk down the list and check for basic types */ 428 if ((dl->decl.prefix == NULL) && 429 ((ptr = find_type(dl->decl.type)) != NULL) && 430 ((dl->decl.rel == REL_ALIAS) || 431 (dl->decl.rel == REL_VECTOR))){ 432 if (i == 0) 433 cur = dl; 434 i++; 435 436 if (dl->decl.rel == REL_ALIAS) 437 size += ptr->length; 438 else { 439 /* this code is required to handle arrays */ 440 if (sizestr == NULL) 441 plus = ""; 442 else 443 plus = " + "; 444 445 if (ptr->length != 1) 446 s_print(ptemp, "%s%s * %d", 447 plus, dl->decl.array_max, 448 ptr->length); 449 else 450 s_print(ptemp, "%s%s", plus, 451 dl->decl.array_max); 452 453 /* now concatenate to sizestr !!!! */ 454 if (sizestr == NULL) 455 sizestr = strdup(ptemp); 456 else{ 457 sizestr = realloc(sizestr, 458 strlen(sizestr) 459 +strlen(ptemp)+1); 460 if (sizestr == NULL){ 461 warnx("fatal error: no memory"); 462 crash(); 463 }; 464 sizestr = strcat(sizestr, ptemp); 465 /* build up length of array */ 466 } 467 } 468 } else { 469 if (i > 0) { 470 if (sizestr == NULL && size < inline){ 471 /* 472 * don't expand into inline code 473 * if size < inline 474 */ 475 while (cur != dl){ 476 print_stat(indent + 1, &cur->decl); 477 cur = cur->next; 478 } 479 } else { 480 /* were already looking at a xdr_inlineable structure */ 481 tabify(fout, indent + 1); 482 if (sizestr == NULL) 483 f_print(fout, "buf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);", 484 size); 485 else { 486 if (size == 0) 487 f_print(fout, 488 "buf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);", 489 sizestr); 490 else 491 f_print(fout, 492 "buf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);", 493 size, sizestr); 494 495 } 496 f_print(fout, "\n"); 497 tabify(fout, indent + 1); 498 f_print(fout, 499 "if (buf == NULL) {\n"); 500 501 psav = cur; 502 while (cur != dl){ 503 print_stat(indent + 2, &cur->decl); 504 cur = cur->next; 505 } 506 507 f_print(fout, "\n\t\t} else {\n"); 508 509 cur = psav; 510 while (cur != dl){ 511 emit_inline(indent + 2, &cur->decl, flag); 512 cur = cur->next; 513 } 514 515 tabify(fout, indent + 1); 516 f_print(fout, "}\n"); 517 } 518 } 519 size = 0; 520 i = 0; 521 sizestr = NULL; 522 print_stat(indent + 1, &dl->decl); 523 } 524 } 525 526 if (i > 0) 527 if (sizestr == NULL && size < inline){ 528 /* don't expand into inline code if size < inline */ 529 while (cur != dl){ 530 print_stat(indent + 1, &cur->decl); 531 cur = cur->next; 532 } 533 } else { 534 /* were already looking at a xdr_inlineable structure */ 535 if (sizestr == NULL) 536 f_print(fout, "\t\tbuf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);", 537 size); 538 else 539 if (size == 0) 540 f_print(fout, 541 "\t\tbuf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);", 542 sizestr); 543 else 544 f_print(fout, 545 "\t\tbuf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);", 546 size, sizestr); 547 548 f_print(fout, "\n\t\tif (buf == NULL) {\n"); 549 psav = cur; 550 while (cur != NULL){ 551 print_stat(indent + 2, &cur->decl); 552 cur = cur->next; 553 } 554 f_print(fout, "\t\t} else {\n"); 555 556 cur = psav; 557 while (cur != dl){ 558 emit_inline(indent + 2, &cur->decl, flag); 559 cur = cur->next; 560 } 561 f_print(fout, "\t\t}\n"); 562 } 563 } 564 565 static void 566 emit_struct(def) 567 definition *def; 568 { 569 decl_list *dl; 570 int j, size, flag; 571 bas_type *ptr; 572 int can_inline; 573 574 if (inline == 0) { 575 /* No xdr_inlining at all */ 576 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 577 print_stat(1, &dl->decl); 578 return; 579 } 580 581 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 582 if (dl->decl.rel == REL_VECTOR){ 583 f_print(fout, "\tint i;\n"); 584 break; 585 } 586 587 size = 0; 588 can_inline = 0; 589 /* 590 * Make a first pass and see if inling is possible. 591 */ 592 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 593 if ((dl->decl.prefix == NULL) && 594 ((ptr = find_type(dl->decl.type)) != NULL) && 595 ((dl->decl.rel == REL_ALIAS)|| 596 (dl->decl.rel == REL_VECTOR))){ 597 if (dl->decl.rel == REL_ALIAS) 598 size += ptr->length; 599 else { 600 can_inline = 1; 601 break; /* can be inlined */ 602 } 603 } else { 604 if (size >= inline){ 605 can_inline = 1; 606 break; /* can be inlined */ 607 } 608 size = 0; 609 } 610 if (size >= inline) 611 can_inline = 1; 612 613 if (can_inline == 0){ /* can not inline, drop back to old mode */ 614 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 615 print_stat(1, &dl->decl); 616 return; 617 } 618 619 flag = PUT; 620 for (j = 0; j < 2; j++){ 621 inline_struct(def, flag); 622 if (flag == PUT) 623 flag = GET; 624 } 625 626 f_print(fout, "\t\treturn (TRUE);\n\t}\n\n"); 627 628 /* now take care of XDR_FREE case */ 629 630 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 631 print_stat(1, &dl->decl); 632 633 } 634 635 static void 636 emit_typedef(def) 637 definition *def; 638 { 639 char *prefix = def->def.ty.old_prefix; 640 char *type = def->def.ty.old_type; 641 char *amax = def->def.ty.array_max; 642 relation rel = def->def.ty.rel; 643 644 print_ifstat(1, prefix, type, rel, amax, "objp", def->def_name); 645 } 646 647 static void 648 print_stat(indent, dec) 649 int indent; 650 declaration *dec; 651 { 652 char *prefix = dec->prefix; 653 char *type = dec->type; 654 char *amax = dec->array_max; 655 relation rel = dec->rel; 656 char name[256]; 657 658 if (isvectordef(type, rel)) { 659 s_print(name, "objp->%s", dec->name); 660 } else { 661 s_print(name, "&objp->%s", dec->name); 662 } 663 print_ifstat(indent, prefix, type, rel, amax, name, dec->name); 664 } 665 666 667 char *upcase (); 668 669 static void 670 emit_inline(indent, decl, flag) 671 int indent; 672 declaration *decl; 673 int flag; 674 { 675 switch (decl->rel) { 676 case REL_ALIAS : 677 emit_single_in_line(indent, decl, flag, REL_ALIAS); 678 break; 679 case REL_VECTOR : 680 tabify(fout, indent); 681 f_print(fout, "{\n"); 682 tabify(fout, indent + 1); 683 f_print(fout, "register %s *genp;\n\n", decl->type); 684 tabify(fout, indent + 1); 685 f_print(fout, 686 "for (i = 0, genp = objp->%s;\n", decl->name); 687 tabify(fout, indent + 2); 688 f_print(fout, "i < %s; i++) {\n", decl->array_max); 689 emit_single_in_line(indent + 2, decl, flag, REL_VECTOR); 690 tabify(fout, indent + 1); 691 f_print(fout, "}\n"); 692 tabify(fout, indent); 693 f_print(fout, "}\n"); 694 default: 695 } 696 } 697 698 static void 699 emit_single_in_line(indent, decl, flag, rel) 700 int indent; 701 declaration *decl; 702 int flag; 703 relation rel; 704 { 705 char *upp_case; 706 int freed = 0; 707 708 tabify(fout, indent); 709 if (flag == PUT) 710 f_print(fout, "IXDR_PUT_"); 711 else 712 if (rel == REL_ALIAS) 713 f_print(fout, "objp->%s = IXDR_GET_", decl->name); 714 else 715 f_print(fout, "*genp++ = IXDR_GET_"); 716 717 upp_case = upcase(decl->type); 718 719 /* hack - XX */ 720 if (strcmp(upp_case, "INT") == 0) 721 { 722 free(upp_case); 723 freed = 1; 724 upp_case = "LONG"; 725 } 726 727 if (strcmp(upp_case, "U_INT") == 0) 728 { 729 free(upp_case); 730 freed = 1; 731 upp_case = "U_LONG"; 732 } 733 if (flag == PUT) 734 if (rel == REL_ALIAS) 735 f_print(fout, 736 "%s(buf, objp->%s);\n", upp_case, decl->name); 737 else 738 f_print(fout, "%s(buf, *genp++);\n", upp_case); 739 740 else 741 f_print(fout, "%s(buf);\n", upp_case); 742 if (!freed) 743 free(upp_case); 744 } 745 746 char *upcase(str) 747 char *str; 748 { 749 char *ptr, *hptr; 750 751 ptr = (char *)malloc(strlen(str)+1); 752 if (ptr == (char *) NULL) 753 errx(1, "malloc failed"); 754 755 hptr = ptr; 756 while (*str != '\0') 757 *ptr++ = toupper(*str++); 758 759 *ptr = '\0'; 760 return (hptr); 761 } 762