rpc_cout.c revision 1.10
1 /* $NetBSD: rpc_cout.c,v 1.10 1997/10/09 17:58:15 mycroft Exp $ */ 2 /* 3 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for 4 * unrestricted use provided that this legend is included on all tape 5 * media and as a part of the software program in whole or part. Users 6 * may copy or modify Sun RPC without charge, but are not authorized 7 * to license or distribute it to anyone else except as part of a product or 8 * program developed by the user or with the express written consent of 9 * Sun Microsystems, Inc. 10 * 11 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE 12 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR 13 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. 14 * 15 * Sun RPC is provided with no support and without any obligation on the 16 * part of Sun Microsystems, Inc. to assist in its use, correction, 17 * modification or enhancement. 18 * 19 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE 20 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC 21 * OR ANY PART THEREOF. 22 * 23 * In no event will Sun Microsystems, Inc. be liable for any lost revenue 24 * or profits or other special, indirect and consequential damages, even if 25 * Sun has been advised of the possibility of such damages. 26 * 27 * Sun Microsystems, Inc. 28 * 2550 Garcia Avenue 29 * Mountain View, California 94043 30 */ 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 */ 39 #include <sys/cdefs.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 #include "rpc_parse.h" 44 #include "rpc_util.h" 45 46 static findtype __P((definition *, char *)); 47 static undefined __P((char *)); 48 static print_generic_header __P((char *, int)); 49 static print_header __P((definition *)); 50 static print_prog_header __P((proc_list *)); 51 static print_trailer __P((void)); 52 static print_ifopen __P((int, char *)); 53 static print_ifarg __P((char *)); 54 static print_ifsizeof __P((char *, char *)); 55 static print_ifclose __P((int)); 56 static print_ifstat __P((int, char *, char *, relation, char *, char *, char *)); 57 static emit_num __P((definition *)); 58 static emit_program __P((definition *)); 59 static emit_enum __P((definition *)); 60 static emit_union __P((definition *)); 61 static emit_struct __P((definition *)); 62 static emit_typedef __P((definition *)); 63 static print_stat __P((int, declaration *)); 64 65 66 /* 67 * Emit the C-routine for the given definition 68 */ 69 void 70 emit(def) 71 definition *def; 72 { 73 if (def->def_kind == DEF_CONST) { 74 return; 75 } 76 if (def->def_kind == DEF_PROGRAM) { 77 emit_program(def); 78 return; 79 } 80 if (def->def_kind == DEF_TYPEDEF) { 81 /* now we need to handle declarations like struct typedef foo 82 * foo; since we dont want this to be expanded into 2 calls to 83 * xdr_foo */ 84 85 if (strcmp(def->def.ty.old_type, def->def_name) == 0) 86 return; 87 }; 88 89 print_header(def); 90 91 switch (def->def_kind) { 92 case DEF_UNION: 93 emit_union(def); 94 break; 95 case DEF_ENUM: 96 emit_enum(def); 97 break; 98 case DEF_STRUCT: 99 emit_struct(def); 100 break; 101 case DEF_TYPEDEF: 102 emit_typedef(def); 103 break; 104 } 105 print_trailer(); 106 } 107 108 static 109 findtype(def, type) 110 definition *def; 111 char *type; 112 { 113 114 if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST) { 115 return (0); 116 } else { 117 return (streq(def->def_name, type)); 118 } 119 } 120 121 static 122 undefined(type) 123 char *type; 124 { 125 definition *def; 126 127 def = (definition *) FINDVAL(defined, type, findtype); 128 129 130 return (def == NULL); 131 } 132 133 static 134 print_generic_header(procname, pointerp) 135 char *procname; 136 int pointerp; 137 { 138 f_print(fout, "\n"); 139 f_print(fout, "bool_t\n"); 140 if (Cflag) { 141 f_print(fout, "xdr_%s(", procname); 142 f_print(fout, "XDR *xdrs, "); 143 f_print(fout, "%s ", procname); 144 if (pointerp) 145 f_print(fout, "*"); 146 f_print(fout, "objp)\n{\n"); 147 } else { 148 f_print(fout, "xdr_%s(xdrs, objp)\n", procname); 149 f_print(fout, "\tXDR *xdrs;\n"); 150 f_print(fout, "\t%s ", procname); 151 if (pointerp) 152 f_print(fout, "*"); 153 f_print(fout, "objp;\n{\n"); 154 } 155 } 156 157 static 158 print_header(def) 159 definition *def; 160 { 161 162 decl_list *dl; 163 bas_type *ptr; 164 int i; 165 166 print_generic_header(def->def_name, 167 def->def_kind != DEF_TYPEDEF || 168 !isvectordef(def->def.ty.old_type, def->def.ty.rel)); 169 } 170 171 static 172 print_prog_header(plist) 173 proc_list *plist; 174 { 175 print_generic_header(plist->args.argname, 1); 176 } 177 178 static 179 print_trailer() 180 { 181 f_print(fout, "\treturn (TRUE);\n"); 182 f_print(fout, "}\n"); 183 } 184 185 186 static 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 196 print_ifarg(arg) 197 char *arg; 198 { 199 f_print(fout, ", %s", arg); 200 } 201 202 static 203 print_ifsizeof(prefix, type) 204 char *prefix; 205 char *type; 206 { 207 if (streq(type, "bool")) { 208 f_print(fout, ", sizeof(bool_t), (xdrproc_t)xdr_bool"); 209 } else { 210 f_print(fout, ", sizeof("); 211 if (undefined(type) && prefix) { 212 f_print(fout, "%s ", prefix); 213 } 214 f_print(fout, "%s), (xdrproc_t)xdr_%s", type, type); 215 } 216 } 217 218 static 219 print_ifclose(indent) 220 int indent; 221 { 222 f_print(fout, "))\n"); 223 tabify(fout, indent); 224 f_print(fout, "\treturn (FALSE);\n"); 225 } 226 227 static 228 print_ifstat(indent, prefix, type, rel, amax, objname, name) 229 int indent; 230 char *prefix; 231 char *type; 232 relation rel; 233 char *amax; 234 char *objname; 235 char *name; 236 { 237 char *alt = NULL; 238 239 switch (rel) { 240 case REL_POINTER: 241 print_ifopen(indent, "pointer"); 242 print_ifarg("(char **)"); 243 f_print(fout, "%s", objname); 244 print_ifsizeof(prefix, type); 245 break; 246 case REL_VECTOR: 247 if (streq(type, "string")) { 248 alt = "string"; 249 } else 250 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(prefix, type); 264 } 265 break; 266 case REL_ARRAY: 267 if (streq(type, "string")) { 268 alt = "string"; 269 } else 270 if (streq(type, "opaque")) { 271 alt = "bytes"; 272 } 273 if (streq(type, "string")) { 274 print_ifopen(indent, alt); 275 print_ifarg(objname); 276 } else { 277 if (alt) { 278 print_ifopen(indent, alt); 279 } else { 280 print_ifopen(indent, "array"); 281 } 282 print_ifarg("(char **)"); 283 if (*objname == '&') { 284 f_print(fout, "%s.%s_val, (u_int *)%s.%s_len", 285 objname, name, objname, name); 286 } else { 287 f_print(fout, "&%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(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 fprintf(fout, "\n"); 310 print_ifopen(1, "enum"); 311 print_ifarg("(enum_t *)objp"); 312 print_ifclose(1); 313 } 314 315 static 316 emit_program(def) 317 definition *def; 318 { 319 decl_list *dl; 320 version_list *vlist; 321 proc_list *plist; 322 323 for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next) 324 for (plist = vlist->procs; plist != NULL; plist = plist->next) { 325 if (!newstyle || plist->arg_num < 2) 326 continue; /* old style, or single 327 * argument */ 328 print_prog_header(plist); 329 for (dl = plist->args.decls; dl != NULL; 330 dl = dl->next) 331 print_stat(1, &dl->decl); 332 print_trailer(); 333 } 334 } 335 336 337 static 338 emit_union(def) 339 definition *def; 340 { 341 declaration *dflt; 342 case_list *cl; 343 declaration *cs; 344 char *object; 345 char *vecformat = "objp->%s_u.%s"; 346 char *format = "&objp->%s_u.%s"; 347 348 f_print(fout, "\n"); 349 print_stat(1, &def->def.un.enum_decl); 350 f_print(fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name); 351 for (cl = def->def.un.cases; cl != NULL; cl = cl->next) { 352 f_print(fout, "\tcase %s:\n", cl->case_name); 353 if (cl->contflag == 1) /* a continued case statement */ 354 continue; 355 cs = &cl->case_decl; 356 if (!streq(cs->type, "void")) { 357 object = alloc(strlen(def->def_name) + strlen(format) + 358 strlen(cs->name) + 1); 359 if (isvectordef(cs->type, cs->rel)) { 360 s_print(object, vecformat, def->def_name, 361 cs->name); 362 } else { 363 s_print(object, format, def->def_name, 364 cs->name); 365 } 366 print_ifstat(2, cs->prefix, cs->type, cs->rel, 367 cs->array_max, object, cs->name); 368 free(object); 369 } 370 f_print(fout, "\t\tbreak;\n"); 371 } 372 dflt = def->def.un.default_decl; 373 f_print(fout, "\tdefault:\n"); 374 if (dflt != NULL) { 375 if (!streq(dflt->type, "void")) { 376 object = alloc(strlen(def->def_name) + strlen(format) + 377 strlen(dflt->name) + 1); 378 if (isvectordef(dflt->type, dflt->rel)) { 379 s_print(object, vecformat, def->def_name, 380 dflt->name); 381 } else { 382 s_print(object, format, def->def_name, 383 dflt->name); 384 } 385 print_ifstat(2, dflt->prefix, dflt->type, dflt->rel, 386 dflt->array_max, object, dflt->name); 387 free(object); 388 } 389 f_print(fout, "\t\tbreak;\n"); 390 } else { 391 f_print(fout, "\t\treturn (FALSE);\n"); 392 } 393 394 f_print(fout, "\t}\n"); 395 } 396 397 static 398 emit_struct(def) 399 definition *def; 400 { 401 decl_list *dl; 402 int i, j, size, flag; 403 decl_list *cur, *psav; 404 bas_type *ptr; 405 char *sizestr, *plus; 406 char ptemp[256]; 407 int can_inline; 408 409 410 if (inline == 0) { 411 fprintf(fout, "\n"); 412 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 413 print_stat(1, &dl->decl); 414 return; 415 } 416 417 size = 0; 418 can_inline = 0; 419 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 420 if ((dl->decl.prefix == NULL) && 421 ((ptr = find_type(dl->decl.type)) != NULL) && 422 ((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR))) { 423 424 if (dl->decl.rel == REL_ALIAS) 425 size += ptr->length; 426 else { 427 can_inline = 1; 428 break; /* can be inlined */ 429 }; 430 } else { 431 if (size >= inline) { 432 can_inline = 1; 433 break; /* can be inlined */ 434 } 435 size = 0; 436 } 437 if (size > inline) 438 can_inline = 1; 439 440 if (can_inline == 0) { /* can not inline, drop back to old mode */ 441 fprintf(fout, "\n"); 442 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 443 print_stat(1, &dl->decl); 444 return; 445 }; 446 447 /* May cause lint to complain. but ... */ 448 f_print(fout, "\tregister int32_t *buf;\n"); 449 450 flag = PUT; 451 f_print(fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n"); 452 453 for (j = 0; j < 2; j++) { 454 i = 0; 455 size = 0; 456 sizestr = NULL; 457 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) { /* xxx */ 458 459 /* now walk down the list and check for basic types */ 460 if ((dl->decl.prefix == NULL) && ((ptr = find_type(dl->decl.type)) != NULL) && ((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR))) { 461 if (i == 0) 462 cur = dl; 463 i++; 464 465 if (dl->decl.rel == REL_ALIAS) 466 size += ptr->length; 467 else { 468 /* this is required to handle arrays */ 469 470 if (sizestr == NULL) 471 plus = ""; 472 else 473 plus = " + "; 474 475 if (ptr->length != 1) 476 s_print(ptemp, "%s%s * %d", plus, dl->decl.array_max, ptr->length); 477 else 478 s_print(ptemp, "%s%s", plus, dl->decl.array_max); 479 480 /* now concatenate to sizestr !!!! */ 481 if (sizestr == NULL) 482 sizestr = strdup(ptemp); 483 else { 484 sizestr = (char *)realloc(sizestr, strlen(sizestr) + strlen(ptemp) + 1); 485 if (sizestr == NULL) { 486 487 f_print(stderr, "Fatal error : no memory\n"); 488 crash(); 489 }; 490 sizestr = strcat(sizestr, ptemp); /* build up length of 491 * array */ 492 493 } 494 } 495 496 } else { 497 if (i > 0) 498 if (sizestr == NULL && size < inline) { 499 /* don't expand into inline 500 * code if size < inline */ 501 while (cur != dl) { 502 print_stat(2, &cur->decl); 503 cur = cur->next; 504 } 505 } else { 506 507 508 509 /* were already looking at a 510 * xdr_inlineable structure */ 511 if (sizestr == NULL) 512 f_print(fout, "\t\tbuf = (int32_t *)XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);\n", 513 size); 514 else 515 if (size == 0) 516 f_print(fout, 517 "\t\tbuf = (int32_t *)XDR_INLINE(xdrs, %s * BYTES_PER_XDR_UNIT);\n", 518 sizestr); 519 else 520 f_print(fout, 521 "\t\tbuf = (int32_t *)XDR_INLINE(xdrs, (%d + %s) * BYTES_PER_XDR_UNIT);\n", 522 size, sizestr); 523 524 f_print(fout, "\t\tif (buf == NULL) {\n"); 525 526 psav = cur; 527 while (cur != dl) { 528 print_stat(3, &cur->decl); 529 cur = cur->next; 530 } 531 532 f_print(fout, "\t\t} else {\n"); 533 534 cur = psav; 535 while (cur != dl) { 536 emit_inline(&cur->decl, flag); 537 cur = cur->next; 538 } 539 540 f_print(fout, "\t\t}\n"); 541 } 542 size = 0; 543 i = 0; 544 sizestr = NULL; 545 print_stat(2, &dl->decl); 546 } 547 548 } 549 if (i > 0) 550 if (sizestr == NULL && size < inline) { 551 /* don't expand into inline code if size < 552 * inline */ 553 while (cur != dl) { 554 print_stat(2, &cur->decl); 555 cur = cur->next; 556 } 557 } else { 558 559 /* were already looking at a xdr_inlineable 560 * structure */ 561 if (sizestr == NULL) 562 f_print(fout, "\t\tbuf = (int32_t *)XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);\n", 563 size); 564 else 565 if (size == 0) 566 f_print(fout, 567 "\t\tbuf = (int32_t *)XDR_INLINE(xdrs, %s * BYTES_PER_XDR_UNIT);\n", 568 sizestr); 569 else 570 f_print(fout, 571 "\t\tbuf = (int32_t *)XDR_INLINE(xdrs, (%d + %s) * BYTES_PER_XDR_UNIT);\n", 572 size, sizestr); 573 574 f_print(fout, "\t\tif (buf == NULL) {\n"); 575 576 psav = cur; 577 while (cur != NULL) { 578 print_stat(3, &cur->decl); 579 cur = cur->next; 580 } 581 f_print(fout, "\t\t} else {\n"); 582 583 cur = psav; 584 while (cur != dl) { 585 emit_inline(&cur->decl, flag); 586 cur = cur->next; 587 } 588 589 f_print(fout, "\t\t}\n"); 590 591 } 592 593 if (flag == PUT) { 594 flag = GET; 595 f_print(fout, "\t} else if (xdrs->x_op == XDR_DECODE) {\n"); 596 } 597 } 598 599 f_print(fout, "\t} else {\n"); 600 601 /* now take care of XDR_FREE case */ 602 603 for (dl = def->def.st.decls; dl != NULL; dl = dl->next) 604 print_stat(2, &dl->decl); 605 606 f_print(fout, "\t}\n"); 607 } 608 609 static 610 emit_typedef(def) 611 definition *def; 612 { 613 char *prefix = def->def.ty.old_prefix; 614 char *type = def->def.ty.old_type; 615 char *amax = def->def.ty.array_max; 616 relation rel = def->def.ty.rel; 617 618 fprintf(fout, "\n"); 619 print_ifstat(1, prefix, type, rel, amax, "objp", def->def_name); 620 } 621 622 static 623 print_stat(indent, dec) 624 declaration *dec; 625 int indent; 626 { 627 char *prefix = dec->prefix; 628 char *type = dec->type; 629 char *amax = dec->array_max; 630 relation rel = dec->rel; 631 char name[256]; 632 633 if (isvectordef(type, rel)) { 634 s_print(name, "objp->%s", dec->name); 635 } else { 636 s_print(name, "&objp->%s", dec->name); 637 } 638 print_ifstat(indent, prefix, type, rel, amax, name, dec->name); 639 } 640 641 642 char *upcase __P((char *)); 643 644 645 emit_inline(decl, flag) 646 declaration *decl; 647 int flag; 648 { 649 650 /*check whether an array or not */ 651 652 switch (decl->rel) { 653 case REL_ALIAS: 654 emit_single_in_line(decl, flag, REL_ALIAS); 655 break; 656 case REL_VECTOR: 657 f_print(fout, "\t\t\t{\n"); 658 f_print(fout, "\t\t\t\tregister int i;\n"); 659 f_print(fout, "\t\t\t\tregister %s *genp;\n", decl->type); 660 f_print(fout, "\n"); 661 f_print(fout, "\t\t\t\tfor (i = 0, genp = objp->%s;\n", 662 decl->name); 663 f_print(fout, "\t\t\t\t i < %s; i++) {\n\t\t", 664 decl->array_max); 665 emit_single_in_line(decl, flag, REL_VECTOR); 666 f_print(fout, "\t\t\t\t}\n\t\t\t}\n"); 667 668 } 669 } 670 671 emit_single_in_line(decl, flag, rel) 672 declaration *decl; 673 int flag; 674 relation rel; 675 { 676 char *upp_case; 677 int freed = 0; 678 679 if (flag == PUT) 680 f_print(fout, "\t\t\tIXDR_PUT_"); 681 else 682 if (rel == REL_ALIAS) 683 f_print(fout, "\t\t\tobjp->%s = IXDR_GET_", decl->name); 684 else 685 f_print(fout, "\t\t\t*genp++ = IXDR_GET_"); 686 687 upp_case = upcase(decl->type); 688 689 /* hack - XX */ 690 if (strcmp(upp_case, "INT") == 0) { 691 free(upp_case); 692 freed = 1; 693 upp_case = "LONG"; 694 } 695 if (strcmp(upp_case, "U_INT") == 0) { 696 free(upp_case); 697 freed = 1; 698 upp_case = "U_LONG"; 699 } 700 if (flag == PUT) 701 if (rel == REL_ALIAS) 702 f_print(fout, "%s(buf, objp->%s);\n", upp_case, decl->name); 703 else 704 f_print(fout, "%s(buf, *genp++);\n", upp_case); 705 706 else 707 f_print(fout, "%s(buf);\n", upp_case); 708 if (!freed) 709 free(upp_case); 710 711 } 712 713 714 char * 715 upcase(str) 716 char *str; 717 { 718 char *ptr, *hptr; 719 720 721 ptr = (char *) malloc(strlen(str)+1); 722 if (ptr == (char *) NULL) { 723 f_print(stderr, "malloc failed\n"); 724 exit(1); 725 }; 726 727 hptr = ptr; 728 while (*str != '\0') 729 *ptr++ = toupper(*str++); 730 731 *ptr = '\0'; 732 return (hptr); 733 734 } 735
Indexes created Mon Sep 22 21:09:42 GMT 2025