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