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