dt_grammar.y revision 276267
1%{ 2/* 3 * CDDL HEADER START 4 * 5 * The contents of this file are subject to the terms of the 6 * Common Development and Distribution License, Version 1.0 only 7 * (the "License"). You may not use this file except in compliance 8 * with the License. 9 * 10 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 11 * or http://www.opensolaris.org/os/licensing. 12 * See the License for the specific language governing permissions 13 * and limitations under the License. 14 * 15 * When distributing Covered Code, include this CDDL HEADER in each 16 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 17 * If applicable, add the following below this CDDL HEADER, with the 18 * fields enclosed by brackets "[]" replaced with your own identifying 19 * information: Portions Copyright [yyyy] [name of copyright owner] 20 * 21 * CDDL HEADER END 22 * 23 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26/* 27 * Copyright (c) 2013 by Delphix. All rights reserved. 28 * Copyright (c) 2013, Joyent, Inc. All rights reserved. 29 */ 30 31#include <dt_impl.h> 32 33#define OP1(op, c) dt_node_op1(op, c) 34#define OP2(op, l, r) dt_node_op2(op, l, r) 35#define OP3(x, y, z) dt_node_op3(x, y, z) 36#define LINK(l, r) dt_node_link(l, r) 37#define DUP(s) strdup(s) 38 39%} 40 41%union { 42 dt_node_t *l_node; 43 dt_decl_t *l_decl; 44 char *l_str; 45 uintmax_t l_int; 46 int l_tok; 47} 48 49%token DT_TOK_COMMA DT_TOK_ELLIPSIS 50%token DT_TOK_ASGN DT_TOK_ADD_EQ DT_TOK_SUB_EQ DT_TOK_MUL_EQ 51%token DT_TOK_DIV_EQ DT_TOK_MOD_EQ DT_TOK_AND_EQ DT_TOK_XOR_EQ DT_TOK_OR_EQ 52%token DT_TOK_LSH_EQ DT_TOK_RSH_EQ DT_TOK_QUESTION DT_TOK_COLON 53%token DT_TOK_LOR DT_TOK_LXOR DT_TOK_LAND 54%token DT_TOK_BOR DT_TOK_XOR DT_TOK_BAND DT_TOK_EQU DT_TOK_NEQ 55%token DT_TOK_LT DT_TOK_LE DT_TOK_GT DT_TOK_GE DT_TOK_LSH DT_TOK_RSH 56%token DT_TOK_ADD DT_TOK_SUB DT_TOK_MUL DT_TOK_DIV DT_TOK_MOD 57%token DT_TOK_LNEG DT_TOK_BNEG DT_TOK_ADDADD DT_TOK_SUBSUB 58%token DT_TOK_PREINC DT_TOK_POSTINC DT_TOK_PREDEC DT_TOK_POSTDEC 59%token DT_TOK_IPOS DT_TOK_INEG DT_TOK_DEREF DT_TOK_ADDROF 60%token DT_TOK_OFFSETOF DT_TOK_SIZEOF DT_TOK_STRINGOF DT_TOK_XLATE 61%token DT_TOK_LPAR DT_TOK_RPAR DT_TOK_LBRAC DT_TOK_RBRAC DT_TOK_PTR DT_TOK_DOT 62 63%token <l_str> DT_TOK_STRING 64%token <l_str> DT_TOK_IDENT 65%token <l_str> DT_TOK_PSPEC 66%token <l_str> DT_TOK_AGG 67%token <l_str> DT_TOK_TNAME 68%token <l_int> DT_TOK_INT 69 70%token DT_KEY_AUTO 71%token DT_KEY_BREAK 72%token DT_KEY_CASE 73%token DT_KEY_CHAR 74%token DT_KEY_CONST 75%token DT_KEY_CONTINUE 76%token DT_KEY_COUNTER 77%token DT_KEY_DEFAULT 78%token DT_KEY_DO 79%token DT_KEY_DOUBLE 80%token DT_KEY_ELSE 81%token DT_KEY_ENUM 82%token DT_KEY_EXTERN 83%token DT_KEY_FLOAT 84%token DT_KEY_FOR 85%token DT_KEY_GOTO 86%token DT_KEY_IF 87%token DT_KEY_IMPORT 88%token DT_KEY_INLINE 89%token DT_KEY_INT 90%token DT_KEY_LONG 91%token DT_KEY_PROBE 92%token DT_KEY_PROVIDER 93%token DT_KEY_REGISTER 94%token DT_KEY_RESTRICT 95%token DT_KEY_RETURN 96%token DT_KEY_SELF 97%token DT_KEY_SHORT 98%token DT_KEY_SIGNED 99%token DT_KEY_STATIC 100%token DT_KEY_STRING 101%token DT_KEY_STRUCT 102%token DT_KEY_SWITCH 103%token DT_KEY_THIS 104%token DT_KEY_TYPEDEF 105%token DT_KEY_UNION 106%token DT_KEY_UNSIGNED 107%token DT_KEY_USERLAND 108%token DT_KEY_VOID 109%token DT_KEY_VOLATILE 110%token DT_KEY_WHILE 111%token DT_KEY_XLATOR 112 113%token DT_TOK_EPRED 114%token DT_CTX_DEXPR 115%token DT_CTX_DPROG 116%token DT_CTX_DTYPE 117%token DT_TOK_EOF 0 118 119%left DT_TOK_COMMA 120%right DT_TOK_ASGN DT_TOK_ADD_EQ DT_TOK_SUB_EQ DT_TOK_MUL_EQ DT_TOK_DIV_EQ 121 DT_TOK_MOD_EQ DT_TOK_AND_EQ DT_TOK_XOR_EQ DT_TOK_OR_EQ DT_TOK_LSH_EQ 122 DT_TOK_RSH_EQ 123%left DT_TOK_QUESTION DT_TOK_COLON 124%left DT_TOK_LOR 125%left DT_TOK_LXOR 126%left DT_TOK_LAND 127%left DT_TOK_BOR 128%left DT_TOK_XOR 129%left DT_TOK_BAND 130%left DT_TOK_EQU DT_TOK_NEQ 131%left DT_TOK_LT DT_TOK_LE DT_TOK_GT DT_TOK_GE 132%left DT_TOK_LSH DT_TOK_RSH 133%left DT_TOK_ADD DT_TOK_SUB 134%left DT_TOK_MUL DT_TOK_DIV DT_TOK_MOD 135%right DT_TOK_LNEG DT_TOK_BNEG DT_TOK_ADDADD DT_TOK_SUBSUB 136 DT_TOK_IPOS DT_TOK_INEG 137%right DT_TOK_DEREF DT_TOK_ADDROF DT_TOK_SIZEOF DT_TOK_STRINGOF DT_TOK_XLATE 138%left DT_TOK_LPAR DT_TOK_RPAR DT_TOK_LBRAC DT_TOK_RBRAC DT_TOK_PTR DT_TOK_DOT 139 140%type <l_node> d_expression 141%type <l_node> d_program 142%type <l_node> d_type 143 144%type <l_node> translation_unit 145%type <l_node> external_declaration 146%type <l_node> inline_definition 147%type <l_node> translator_definition 148%type <l_node> translator_member_list 149%type <l_node> translator_member 150%type <l_node> provider_definition 151%type <l_node> provider_probe_list 152%type <l_node> provider_probe 153%type <l_node> probe_definition 154%type <l_node> probe_specifiers 155%type <l_node> probe_specifier_list 156%type <l_node> probe_specifier 157%type <l_node> statement_list 158%type <l_node> statement 159%type <l_node> declaration 160%type <l_node> init_declarator_list 161%type <l_node> init_declarator 162 163%type <l_decl> type_specifier 164%type <l_decl> type_qualifier 165%type <l_decl> struct_or_union_specifier 166%type <l_decl> specifier_qualifier_list 167%type <l_decl> enum_specifier 168%type <l_decl> declarator 169%type <l_decl> direct_declarator 170%type <l_decl> pointer 171%type <l_decl> type_qualifier_list 172%type <l_decl> type_name 173%type <l_decl> abstract_declarator 174%type <l_decl> direct_abstract_declarator 175 176%type <l_node> parameter_type_list 177%type <l_node> parameter_list 178%type <l_node> parameter_declaration 179 180%type <l_node> array 181%type <l_node> array_parameters 182%type <l_node> function 183%type <l_node> function_parameters 184 185%type <l_node> expression 186%type <l_node> assignment_expression 187%type <l_node> conditional_expression 188%type <l_node> constant_expression 189%type <l_node> logical_or_expression 190%type <l_node> logical_xor_expression 191%type <l_node> logical_and_expression 192%type <l_node> inclusive_or_expression 193%type <l_node> exclusive_or_expression 194%type <l_node> and_expression 195%type <l_node> equality_expression 196%type <l_node> relational_expression 197%type <l_node> shift_expression 198%type <l_node> additive_expression 199%type <l_node> multiplicative_expression 200%type <l_node> cast_expression 201%type <l_node> unary_expression 202%type <l_node> postfix_expression 203%type <l_node> primary_expression 204%type <l_node> argument_expression_list 205 206%type <l_tok> assignment_operator 207%type <l_tok> unary_operator 208%type <l_tok> struct_or_union 209 210%type <l_str> dtrace_keyword_ident 211 212%% 213 214dtrace_program: d_expression DT_TOK_EOF { return (dt_node_root($1)); } 215 | d_program DT_TOK_EOF { return (dt_node_root($1)); } 216 | d_type DT_TOK_EOF { return (dt_node_root($1)); } 217 ; 218 219d_expression: DT_CTX_DEXPR { $$ = NULL; } 220 | DT_CTX_DEXPR expression { $$ = $2; } 221 ; 222 223d_program: DT_CTX_DPROG { $$ = dt_node_program(NULL); } 224 | DT_CTX_DPROG translation_unit { $$ = dt_node_program($2); } 225 ; 226 227d_type: DT_CTX_DTYPE { $$ = NULL; } 228 | DT_CTX_DTYPE type_name { $$ = (dt_node_t *)$2; } 229 ; 230 231translation_unit: 232 external_declaration 233 | translation_unit external_declaration { $$ = LINK($1, $2); } 234 ; 235 236external_declaration: 237 inline_definition 238 | translator_definition 239 | provider_definition 240 | probe_definition 241 | declaration 242 ; 243 244inline_definition: 245 DT_KEY_INLINE declaration_specifiers declarator 246 { dt_scope_push(NULL, CTF_ERR); } DT_TOK_ASGN 247 assignment_expression ';' { 248 /* 249 * We push a new declaration scope before shifting the 250 * assignment_expression in order to preserve ds_class 251 * and ds_ident for use in dt_node_inline(). Once the 252 * entire inline_definition rule is matched, pop the 253 * scope and construct the inline using the saved decl. 254 */ 255 dt_scope_pop(); 256 $$ = dt_node_inline($6); 257 } 258 ; 259 260translator_definition: 261 DT_KEY_XLATOR type_name DT_TOK_LT type_name 262 DT_TOK_IDENT DT_TOK_GT '{' translator_member_list '}' ';' { 263 $$ = dt_node_xlator($2, $4, $5, $8); 264 } 265 | DT_KEY_XLATOR type_name DT_TOK_LT type_name 266 DT_TOK_IDENT DT_TOK_GT '{' '}' ';' { 267 $$ = dt_node_xlator($2, $4, $5, NULL); 268 } 269 ; 270 271translator_member_list: 272 translator_member 273 | translator_member_list translator_member { $$ = LINK($1,$2); } 274 ; 275 276translator_member: 277 DT_TOK_IDENT DT_TOK_ASGN assignment_expression ';' { 278 $$ = dt_node_member(NULL, $1, $3); 279 } 280 ; 281 282provider_definition: 283 DT_KEY_PROVIDER DT_TOK_IDENT '{' provider_probe_list '}' ';' { 284 $$ = dt_node_provider($2, $4); 285 } 286 | DT_KEY_PROVIDER DT_TOK_IDENT '{' '}' ';' { 287 $$ = dt_node_provider($2, NULL); 288 } 289 ; 290 291provider_probe_list: 292 provider_probe 293 | provider_probe_list provider_probe { $$ = LINK($1, $2); } 294 ; 295 296provider_probe: 297 DT_KEY_PROBE DT_TOK_IDENT function DT_TOK_COLON function ';' { 298 $$ = dt_node_probe($2, 2, $3, $5); 299 } 300 | DT_KEY_PROBE DT_TOK_IDENT function ';' { 301 $$ = dt_node_probe($2, 1, $3, NULL); 302 } 303 ; 304 305 306probe_definition: 307 probe_specifiers { 308 /* 309 * If the input stream is a file, do not permit a probe 310 * specification without / <pred> / or { <act> } after 311 * it. This can only occur if the next token is EOF or 312 * an ambiguous predicate was slurped up as a comment. 313 * We cannot perform this check if input() is a string 314 * because dtrace(1M) [-fmnP] also use the compiler and 315 * things like dtrace -n BEGIN have to be accepted. 316 */ 317 if (yypcb->pcb_fileptr != NULL) { 318 dnerror($1, D_SYNTAX, "expected predicate and/" 319 "or actions following probe description\n"); 320 } 321 $$ = dt_node_clause($1, NULL, NULL); 322 } 323 | probe_specifiers '{' statement_list '}' { 324 $$ = dt_node_clause($1, NULL, $3); 325 } 326 | probe_specifiers DT_TOK_DIV expression DT_TOK_EPRED { 327 dnerror($3, D_SYNTAX, "expected actions { } following " 328 "probe description and predicate\n"); 329 } 330 | probe_specifiers DT_TOK_DIV expression DT_TOK_EPRED 331 '{' statement_list '}' { 332 $$ = dt_node_clause($1, $3, $6); 333 } 334 ; 335 336probe_specifiers: 337 probe_specifier_list { yybegin(YYS_EXPR); $$ = $1; } 338 ; 339 340probe_specifier_list: 341 probe_specifier 342 | probe_specifier_list DT_TOK_COMMA probe_specifier { 343 $$ = LINK($1, $3); 344 } 345 ; 346 347probe_specifier: 348 DT_TOK_PSPEC { $$ = dt_node_pdesc_by_name($1); } 349 | DT_TOK_INT { $$ = dt_node_pdesc_by_id($1); } 350 ; 351 352statement_list: statement { $$ = $1; } 353 | statement_list ';' statement { $$ = LINK($1, $3); } 354 ; 355 356statement: /* empty */ { $$ = NULL; } 357 | expression { $$ = dt_node_statement($1); } 358 ; 359 360argument_expression_list: 361 assignment_expression 362 | argument_expression_list DT_TOK_COMMA assignment_expression { 363 $$ = LINK($1, $3); 364 } 365 ; 366 367primary_expression: 368 DT_TOK_IDENT { $$ = dt_node_ident($1); } 369 | DT_TOK_AGG { $$ = dt_node_ident($1); } 370 | DT_TOK_INT { $$ = dt_node_int($1); } 371 | DT_TOK_STRING { $$ = dt_node_string($1); } 372 | DT_KEY_SELF { $$ = dt_node_ident(DUP("self")); } 373 | DT_KEY_THIS { $$ = dt_node_ident(DUP("this")); } 374 | DT_TOK_LPAR expression DT_TOK_RPAR { $$ = $2; } 375 ; 376 377postfix_expression: 378 primary_expression 379 | postfix_expression 380 DT_TOK_LBRAC argument_expression_list DT_TOK_RBRAC { 381 $$ = OP2(DT_TOK_LBRAC, $1, $3); 382 } 383 | postfix_expression DT_TOK_LPAR DT_TOK_RPAR { 384 $$ = dt_node_func($1, NULL); 385 } 386 | postfix_expression 387 DT_TOK_LPAR argument_expression_list DT_TOK_RPAR { 388 $$ = dt_node_func($1, $3); 389 } 390 | postfix_expression DT_TOK_DOT DT_TOK_IDENT { 391 $$ = OP2(DT_TOK_DOT, $1, dt_node_ident($3)); 392 } 393 | postfix_expression DT_TOK_DOT DT_TOK_TNAME { 394 $$ = OP2(DT_TOK_DOT, $1, dt_node_ident($3)); 395 } 396 | postfix_expression DT_TOK_DOT dtrace_keyword_ident { 397 $$ = OP2(DT_TOK_DOT, $1, dt_node_ident($3)); 398 } 399 | postfix_expression DT_TOK_PTR DT_TOK_IDENT { 400 $$ = OP2(DT_TOK_PTR, $1, dt_node_ident($3)); 401 } 402 | postfix_expression DT_TOK_PTR DT_TOK_TNAME { 403 $$ = OP2(DT_TOK_PTR, $1, dt_node_ident($3)); 404 } 405 | postfix_expression DT_TOK_PTR dtrace_keyword_ident { 406 $$ = OP2(DT_TOK_PTR, $1, dt_node_ident($3)); 407 } 408 | postfix_expression DT_TOK_ADDADD { 409 $$ = OP1(DT_TOK_POSTINC, $1); 410 } 411 | postfix_expression DT_TOK_SUBSUB { 412 $$ = OP1(DT_TOK_POSTDEC, $1); 413 } 414 | DT_TOK_OFFSETOF DT_TOK_LPAR type_name DT_TOK_COMMA 415 DT_TOK_IDENT DT_TOK_RPAR { 416 $$ = dt_node_offsetof($3, $5); 417 } 418 | DT_TOK_OFFSETOF DT_TOK_LPAR type_name DT_TOK_COMMA 419 DT_TOK_TNAME DT_TOK_RPAR { 420 $$ = dt_node_offsetof($3, $5); 421 } 422 | DT_TOK_OFFSETOF DT_TOK_LPAR type_name DT_TOK_COMMA 423 dtrace_keyword_ident DT_TOK_RPAR { 424 $$ = dt_node_offsetof($3, $5); 425 } 426 | DT_TOK_XLATE DT_TOK_LT type_name DT_TOK_GT 427 DT_TOK_LPAR expression DT_TOK_RPAR { 428 $$ = OP2(DT_TOK_XLATE, dt_node_type($3), $6); 429 } 430 ; 431 432unary_expression: 433 postfix_expression 434 | DT_TOK_ADDADD unary_expression { $$ = OP1(DT_TOK_PREINC, $2); } 435 | DT_TOK_SUBSUB unary_expression { $$ = OP1(DT_TOK_PREDEC, $2); } 436 | unary_operator cast_expression { $$ = OP1($1, $2); } 437 | DT_TOK_SIZEOF unary_expression { $$ = OP1(DT_TOK_SIZEOF, $2); } 438 | DT_TOK_SIZEOF DT_TOK_LPAR type_name DT_TOK_RPAR { 439 $$ = OP1(DT_TOK_SIZEOF, dt_node_type($3)); 440 } 441 | DT_TOK_STRINGOF unary_expression { 442 $$ = OP1(DT_TOK_STRINGOF, $2); 443 } 444 ; 445 446unary_operator: DT_TOK_BAND { $$ = DT_TOK_ADDROF; } 447 | DT_TOK_MUL { $$ = DT_TOK_DEREF; } 448 | DT_TOK_ADD { $$ = DT_TOK_IPOS; } 449 | DT_TOK_SUB { $$ = DT_TOK_INEG; } 450 | DT_TOK_BNEG { $$ = DT_TOK_BNEG; } 451 | DT_TOK_LNEG { $$ = DT_TOK_LNEG; } 452 ; 453 454cast_expression: 455 unary_expression 456 | DT_TOK_LPAR type_name DT_TOK_RPAR cast_expression { 457 $$ = OP2(DT_TOK_LPAR, dt_node_type($2), $4); 458 } 459 ; 460 461multiplicative_expression: 462 cast_expression 463 | multiplicative_expression DT_TOK_MUL cast_expression { 464 $$ = OP2(DT_TOK_MUL, $1, $3); 465 } 466 | multiplicative_expression DT_TOK_DIV cast_expression { 467 $$ = OP2(DT_TOK_DIV, $1, $3); 468 } 469 | multiplicative_expression DT_TOK_MOD cast_expression { 470 $$ = OP2(DT_TOK_MOD, $1, $3); 471 } 472 ; 473 474additive_expression: 475 multiplicative_expression 476 | additive_expression DT_TOK_ADD multiplicative_expression { 477 $$ = OP2(DT_TOK_ADD, $1, $3); 478 } 479 | additive_expression DT_TOK_SUB multiplicative_expression { 480 $$ = OP2(DT_TOK_SUB, $1, $3); 481 } 482 ; 483 484shift_expression: 485 additive_expression 486 | shift_expression DT_TOK_LSH additive_expression { 487 $$ = OP2(DT_TOK_LSH, $1, $3); 488 } 489 | shift_expression DT_TOK_RSH additive_expression { 490 $$ = OP2(DT_TOK_RSH, $1, $3); 491 } 492 ; 493 494relational_expression: 495 shift_expression 496 | relational_expression DT_TOK_LT shift_expression { 497 $$ = OP2(DT_TOK_LT, $1, $3); 498 } 499 | relational_expression DT_TOK_GT shift_expression { 500 $$ = OP2(DT_TOK_GT, $1, $3); 501 } 502 | relational_expression DT_TOK_LE shift_expression { 503 $$ = OP2(DT_TOK_LE, $1, $3); 504 } 505 | relational_expression DT_TOK_GE shift_expression { 506 $$ = OP2(DT_TOK_GE, $1, $3); 507 } 508 ; 509 510equality_expression: 511 relational_expression 512 | equality_expression DT_TOK_EQU relational_expression { 513 $$ = OP2(DT_TOK_EQU, $1, $3); 514 } 515 | equality_expression DT_TOK_NEQ relational_expression { 516 $$ = OP2(DT_TOK_NEQ, $1, $3); 517 } 518 ; 519 520and_expression: 521 equality_expression 522 | and_expression DT_TOK_BAND equality_expression { 523 $$ = OP2(DT_TOK_BAND, $1, $3); 524 } 525 ; 526 527exclusive_or_expression: 528 and_expression 529 | exclusive_or_expression DT_TOK_XOR and_expression { 530 $$ = OP2(DT_TOK_XOR, $1, $3); 531 } 532 ; 533 534inclusive_or_expression: 535 exclusive_or_expression 536 | inclusive_or_expression DT_TOK_BOR exclusive_or_expression { 537 $$ = OP2(DT_TOK_BOR, $1, $3); 538 } 539 ; 540 541logical_and_expression: 542 inclusive_or_expression 543 | logical_and_expression DT_TOK_LAND inclusive_or_expression { 544 $$ = OP2(DT_TOK_LAND, $1, $3); 545 } 546 ; 547 548logical_xor_expression: 549 logical_and_expression 550 | logical_xor_expression DT_TOK_LXOR logical_and_expression { 551 $$ = OP2(DT_TOK_LXOR, $1, $3); 552 } 553 ; 554 555logical_or_expression: 556 logical_xor_expression 557 | logical_or_expression DT_TOK_LOR logical_xor_expression { 558 $$ = OP2(DT_TOK_LOR, $1, $3); 559 } 560 ; 561 562constant_expression: conditional_expression 563 ; 564 565conditional_expression: 566 logical_or_expression 567 | logical_or_expression DT_TOK_QUESTION expression DT_TOK_COLON 568 conditional_expression { $$ = OP3($1, $3, $5); } 569 ; 570 571assignment_expression: 572 conditional_expression 573 | unary_expression assignment_operator assignment_expression { 574 $$ = OP2($2, $1, $3); 575 } 576 ; 577 578assignment_operator: 579 DT_TOK_ASGN { $$ = DT_TOK_ASGN; } 580 | DT_TOK_MUL_EQ { $$ = DT_TOK_MUL_EQ; } 581 | DT_TOK_DIV_EQ { $$ = DT_TOK_DIV_EQ; } 582 | DT_TOK_MOD_EQ { $$ = DT_TOK_MOD_EQ; } 583 | DT_TOK_ADD_EQ { $$ = DT_TOK_ADD_EQ; } 584 | DT_TOK_SUB_EQ { $$ = DT_TOK_SUB_EQ; } 585 | DT_TOK_LSH_EQ { $$ = DT_TOK_LSH_EQ; } 586 | DT_TOK_RSH_EQ { $$ = DT_TOK_RSH_EQ; } 587 | DT_TOK_AND_EQ { $$ = DT_TOK_AND_EQ; } 588 | DT_TOK_XOR_EQ { $$ = DT_TOK_XOR_EQ; } 589 | DT_TOK_OR_EQ { $$ = DT_TOK_OR_EQ; } 590 ; 591 592expression: assignment_expression 593 | expression DT_TOK_COMMA assignment_expression { 594 $$ = OP2(DT_TOK_COMMA, $1, $3); 595 } 596 ; 597 598declaration: declaration_specifiers ';' { 599 $$ = dt_node_decl(); 600 dt_decl_free(dt_decl_pop()); 601 yybegin(YYS_CLAUSE); 602 } 603 | declaration_specifiers init_declarator_list ';' { 604 $$ = $2; 605 dt_decl_free(dt_decl_pop()); 606 yybegin(YYS_CLAUSE); 607 } 608 ; 609 610declaration_specifiers: 611 d_storage_class_specifier 612 | d_storage_class_specifier declaration_specifiers 613 | type_specifier 614 | type_specifier declaration_specifiers 615 | type_qualifier 616 | type_qualifier declaration_specifiers 617 ; 618 619parameter_declaration_specifiers: 620 storage_class_specifier 621 | storage_class_specifier declaration_specifiers 622 | type_specifier 623 | type_specifier declaration_specifiers 624 | type_qualifier 625 | type_qualifier declaration_specifiers 626 ; 627 628storage_class_specifier: 629 DT_KEY_AUTO { dt_decl_class(DT_DC_AUTO); } 630 | DT_KEY_REGISTER { dt_decl_class(DT_DC_REGISTER); } 631 | DT_KEY_STATIC { dt_decl_class(DT_DC_STATIC); } 632 | DT_KEY_EXTERN { dt_decl_class(DT_DC_EXTERN); } 633 | DT_KEY_TYPEDEF { dt_decl_class(DT_DC_TYPEDEF); } 634 ; 635 636d_storage_class_specifier: 637 storage_class_specifier 638 | DT_KEY_SELF { dt_decl_class(DT_DC_SELF); } 639 | DT_KEY_THIS { dt_decl_class(DT_DC_THIS); } 640 ; 641 642type_specifier: DT_KEY_VOID { $$ = dt_decl_spec(CTF_K_INTEGER, DUP("void")); } 643 | DT_KEY_CHAR { $$ = dt_decl_spec(CTF_K_INTEGER, DUP("char")); } 644 | DT_KEY_SHORT { $$ = dt_decl_attr(DT_DA_SHORT); } 645 | DT_KEY_INT { $$ = dt_decl_spec(CTF_K_INTEGER, DUP("int")); } 646 | DT_KEY_LONG { $$ = dt_decl_attr(DT_DA_LONG); } 647 | DT_KEY_FLOAT { $$ = dt_decl_spec(CTF_K_FLOAT, DUP("float")); } 648 | DT_KEY_DOUBLE { $$ = dt_decl_spec(CTF_K_FLOAT, DUP("double")); } 649 | DT_KEY_SIGNED { $$ = dt_decl_attr(DT_DA_SIGNED); } 650 | DT_KEY_UNSIGNED { $$ = dt_decl_attr(DT_DA_UNSIGNED); } 651 | DT_KEY_USERLAND { $$ = dt_decl_attr(DT_DA_USER); } 652 | DT_KEY_STRING { 653 $$ = dt_decl_spec(CTF_K_TYPEDEF, DUP("string")); 654 } 655 | DT_TOK_TNAME { $$ = dt_decl_spec(CTF_K_TYPEDEF, $1); } 656 | struct_or_union_specifier 657 | enum_specifier 658 ; 659 660type_qualifier: DT_KEY_CONST { $$ = dt_decl_attr(DT_DA_CONST); } 661 | DT_KEY_RESTRICT { $$ = dt_decl_attr(DT_DA_RESTRICT); } 662 | DT_KEY_VOLATILE { $$ = dt_decl_attr(DT_DA_VOLATILE); } 663 ; 664 665struct_or_union_specifier: 666 struct_or_union_definition struct_declaration_list '}' { 667 $$ = dt_scope_pop(); 668 } 669 | struct_or_union DT_TOK_IDENT { $$ = dt_decl_spec($1, $2); } 670 | struct_or_union DT_TOK_TNAME { $$ = dt_decl_spec($1, $2); } 671 ; 672 673struct_or_union_definition: 674 struct_or_union '{' { dt_decl_sou($1, NULL); } 675 | struct_or_union DT_TOK_IDENT '{' { dt_decl_sou($1, $2); } 676 | struct_or_union DT_TOK_TNAME '{' { dt_decl_sou($1, $2); } 677 ; 678 679struct_or_union: 680 DT_KEY_STRUCT { $$ = CTF_K_STRUCT; } 681 | DT_KEY_UNION { $$ = CTF_K_UNION; } 682 ; 683 684struct_declaration_list: 685 struct_declaration 686 | struct_declaration_list struct_declaration 687 ; 688 689init_declarator_list: 690 init_declarator 691 | init_declarator_list DT_TOK_COMMA init_declarator { 692 $$ = LINK($1, $3); 693 } 694 ; 695 696init_declarator: 697 declarator { 698 $$ = dt_node_decl(); 699 dt_decl_reset(); 700 } 701 ; 702 703struct_declaration: 704 specifier_qualifier_list struct_declarator_list ';' { 705 dt_decl_free(dt_decl_pop()); 706 } 707 ; 708 709specifier_qualifier_list: 710 type_specifier 711 | type_specifier specifier_qualifier_list { $$ = $2; } 712 | type_qualifier 713 | type_qualifier specifier_qualifier_list { $$ = $2; } 714 ; 715 716struct_declarator_list: 717 struct_declarator 718 | struct_declarator_list DT_TOK_COMMA struct_declarator 719 ; 720 721struct_declarator: 722 declarator { dt_decl_member(NULL); } 723 | DT_TOK_COLON constant_expression { dt_decl_member($2); } 724 | declarator DT_TOK_COLON constant_expression { 725 dt_decl_member($3); 726 } 727 ; 728 729enum_specifier: 730 enum_definition enumerator_list '}' { $$ = dt_scope_pop(); } 731 | DT_KEY_ENUM DT_TOK_IDENT { $$ = dt_decl_spec(CTF_K_ENUM, $2); } 732 | DT_KEY_ENUM DT_TOK_TNAME { $$ = dt_decl_spec(CTF_K_ENUM, $2); } 733 ; 734 735enum_definition: 736 DT_KEY_ENUM '{' { dt_decl_enum(NULL); } 737 | DT_KEY_ENUM DT_TOK_IDENT '{' { dt_decl_enum($2); } 738 | DT_KEY_ENUM DT_TOK_TNAME '{' { dt_decl_enum($2); } 739 ; 740 741enumerator_list: 742 enumerator 743 | enumerator_list DT_TOK_COMMA enumerator 744 ; 745 746enumerator: DT_TOK_IDENT { dt_decl_enumerator($1, NULL); } 747 | DT_TOK_IDENT DT_TOK_ASGN expression { 748 dt_decl_enumerator($1, $3); 749 } 750 ; 751 752declarator: direct_declarator 753 | pointer direct_declarator 754 ; 755 756direct_declarator: 757 DT_TOK_IDENT { $$ = dt_decl_ident($1); } 758 | lparen declarator DT_TOK_RPAR { $$ = $2; } 759 | direct_declarator array { dt_decl_array($2); } 760 | direct_declarator function { dt_decl_func($1, $2); } 761 ; 762 763lparen: DT_TOK_LPAR { dt_decl_top()->dd_attr |= DT_DA_PAREN; } 764 ; 765 766pointer: DT_TOK_MUL { $$ = dt_decl_ptr(); } 767 | DT_TOK_MUL type_qualifier_list { $$ = dt_decl_ptr(); } 768 | DT_TOK_MUL pointer { $$ = dt_decl_ptr(); } 769 | DT_TOK_MUL type_qualifier_list pointer { $$ = dt_decl_ptr(); } 770 ; 771 772type_qualifier_list: 773 type_qualifier 774 | type_qualifier_list type_qualifier { $$ = $2; } 775 ; 776 777parameter_type_list: 778 parameter_list 779 | DT_TOK_ELLIPSIS { $$ = dt_node_vatype(); } 780 | parameter_list DT_TOK_COMMA DT_TOK_ELLIPSIS { 781 $$ = LINK($1, dt_node_vatype()); 782 } 783 ; 784 785parameter_list: parameter_declaration 786 | parameter_list DT_TOK_COMMA parameter_declaration { 787 $$ = LINK($1, $3); 788 } 789 ; 790 791parameter_declaration: 792 parameter_declaration_specifiers { 793 $$ = dt_node_type(NULL); 794 } 795 | parameter_declaration_specifiers declarator { 796 $$ = dt_node_type(NULL); 797 } 798 | parameter_declaration_specifiers abstract_declarator { 799 $$ = dt_node_type(NULL); 800 } 801 ; 802 803type_name: specifier_qualifier_list { 804 $$ = dt_decl_pop(); 805 } 806 | specifier_qualifier_list abstract_declarator { 807 $$ = dt_decl_pop(); 808 } 809 ; 810 811abstract_declarator: 812 pointer 813 | direct_abstract_declarator 814 | pointer direct_abstract_declarator 815 ; 816 817direct_abstract_declarator: 818 lparen abstract_declarator DT_TOK_RPAR { $$ = $2; } 819 | direct_abstract_declarator array { dt_decl_array($2); } 820 | array { dt_decl_array($1); $$ = NULL; } 821 | direct_abstract_declarator function { dt_decl_func($1, $2); } 822 | function { dt_decl_func(NULL, $1); } 823 ; 824 825array: DT_TOK_LBRAC { dt_scope_push(NULL, CTF_ERR); } 826 array_parameters DT_TOK_RBRAC { 827 dt_scope_pop(); 828 $$ = $3; 829 } 830 ; 831 832array_parameters: 833 /* empty */ { $$ = NULL; } 834 | constant_expression { $$ = $1; } 835 | parameter_type_list { $$ = $1; } 836 ; 837 838function: DT_TOK_LPAR { dt_scope_push(NULL, CTF_ERR); } 839 function_parameters DT_TOK_RPAR { 840 dt_scope_pop(); 841 $$ = $3; 842 } 843 ; 844 845function_parameters: 846 /* empty */ { $$ = NULL; } 847 | parameter_type_list { $$ = $1; } 848 ; 849 850dtrace_keyword_ident: 851 DT_KEY_PROBE { $$ = DUP("probe"); } 852 | DT_KEY_PROVIDER { $$ = DUP("provider"); } 853 | DT_KEY_SELF { $$ = DUP("self"); } 854 | DT_KEY_STRING { $$ = DUP("string"); } 855 | DT_TOK_STRINGOF { $$ = DUP("stringof"); } 856 | DT_KEY_USERLAND { $$ = DUP("userland"); } 857 | DT_TOK_XLATE { $$ = DUP("xlate"); } 858 | DT_KEY_XLATOR { $$ = DUP("translator"); } 859 ; 860 861%% 862