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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 /*
     23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
     24  * Use is subject to license terms.
     25  */
     26 
     27 #ifndef	_DT_PCB_H
     28 #define	_DT_PCB_H
     29 
     30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     31 
     32 #include <dtrace.h>
     33 #include <setjmp.h>
     34 #include <stdio.h>
     35 
     36 #ifdef	__cplusplus
     37 extern "C" {
     38 #endif
     39 
     40 #include <dt_parser.h>
     41 #include <dt_regset.h>
     42 #include <dt_inttab.h>
     43 #include <dt_strtab.h>
     44 #include <dt_decl.h>
     45 #include <dt_as.h>
     46 
     47 typedef struct dt_pcb {
     48 	dtrace_hdl_t *pcb_hdl;	/* pointer to library handle */
     49 	struct dt_pcb *pcb_prev; /* pointer to previous pcb in stack */
     50 	FILE *pcb_fileptr;	/* pointer to input file (or NULL) */
     51 	char *pcb_filetag;	/* optional file name string (or NULL) */
     52 	const char *pcb_string;	/* pointer to input string (or NULL) */
     53 	const char *pcb_strptr;	/* pointer to input position */
     54 	size_t pcb_strlen;	/* length of pcb_string */
     55 	int pcb_sargc;		/* number of script arguments (if any) */
     56 	char *const *pcb_sargv;	/* script argument strings (if any) */
     57 	ushort_t *pcb_sflagv;	/* script argument flags (DT_IDFLG_* bits) */
     58 	dt_scope_t pcb_dstack;	/* declaration processing stack */
     59 	dt_node_t *pcb_list;	/* list of allocated parse tree nodes */
     60 	dt_node_t *pcb_hold;	/* parse tree nodes on hold until end of defn */
     61 	dt_node_t *pcb_root;	/* root of current parse tree */
     62 	dt_idstack_t pcb_globals; /* stack of global identifier hash tables */
     63 	dt_idhash_t *pcb_locals; /* current hash table of local identifiers */
     64 	dt_idhash_t *pcb_idents; /* current hash table of ambiguous idents */
     65 	dt_idhash_t *pcb_pragmas; /* current hash table of pending pragmas */
     66 	dt_inttab_t *pcb_inttab; /* integer table for constant references */
     67 	dt_strtab_t *pcb_strtab; /* string table for string references */
     68 	dt_regset_t *pcb_regs;	/* register set for code generation */
     69 	dt_irlist_t pcb_ir;	/* list of unrelocated IR instructions */
     70 	uint_t pcb_asvidx;	/* assembler vartab index (see dt_as.c) */
     71 	ulong_t **pcb_asxrefs;	/* assembler imported xlators (see dt_as.c) */
     72 	uint_t pcb_asxreflen;	/* assembler xlator map length (see dt_as.c) */
     73 	const dtrace_probedesc_t *pcb_pdesc; /* probedesc for current context */
     74 	struct dt_probe *pcb_probe; /* probe associated with current context */
     75 	dtrace_probeinfo_t pcb_pinfo; /* info associated with current context */
     76 	dtrace_attribute_t pcb_amin; /* stability minimum for compilation */
     77 	dt_node_t *pcb_dret;	/* node containing return type for assembler */
     78 	dtrace_difo_t *pcb_difo; /* intermediate DIF object made by assembler */
     79 	dtrace_prog_t *pcb_prog; /* intermediate program made by compiler */
     80 	dtrace_stmtdesc_t *pcb_stmt; /* intermediate stmt made by compiler */
     81 	dtrace_ecbdesc_t *pcb_ecbdesc; /* intermediate ecbdesc made by cmplr */
     82 	jmp_buf pcb_jmpbuf;	/* setjmp(3C) buffer for error return */
     83 	const char *pcb_region;	/* optional region name for yyerror() suffix */
     84 	dtrace_probespec_t pcb_pspec; /* probe description evaluation context */
     85 	uint_t pcb_cflags;	/* optional compilation flags (see dtrace.h) */
     86 	uint_t pcb_idepth;	/* preprocessor #include nesting depth */
     87 	yystate_t pcb_yystate;	/* lex/yacc parsing state (see yybegin()) */
     88 	int pcb_context;	/* yyparse() rules context (DT_CTX_* value) */
     89 	int pcb_token;		/* token to be returned by yylex() (if != 0) */
     90 	int pcb_cstate;		/* state to be restored by lexer at state end */
     91 	int pcb_braces;		/* number of open curly braces in lexer */
     92 	int pcb_brackets;	/* number of open square brackets in lexer */
     93 	int pcb_parens;		/* number of open parentheses in lexer */
     94 } dt_pcb_t;
     95 
     96 extern void dt_pcb_push(dtrace_hdl_t *, dt_pcb_t *);
     97 extern void dt_pcb_pop(dtrace_hdl_t *, int);
     98 
     99 #ifdef	__cplusplus
    100 }
    101 #endif
    102 
    103 #endif	/* _DT_PCB_H */
    104