xref: /illumos-gate/usr/src/lib/libdtrace/common/dt_pcb.h (revision 1da57d551424de5a9d469760be7c4b4d4f10a755)
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 #include <dtrace.h>
31 #include <setjmp.h>
32 #include <stdio.h>
33 
34 #ifdef	__cplusplus
35 extern "C" {
36 #endif
37 
38 #include <dt_parser.h>
39 #include <dt_regset.h>
40 #include <dt_inttab.h>
41 #include <dt_strtab.h>
42 #include <dt_decl.h>
43 #include <dt_as.h>
44 
45 typedef struct dt_pcb {
46 	dtrace_hdl_t *pcb_hdl;	/* pointer to library handle */
47 	struct dt_pcb *pcb_prev; /* pointer to previous pcb in stack */
48 	FILE *pcb_fileptr;	/* pointer to input file (or NULL) */
49 	char *pcb_filetag;	/* optional file name string (or NULL) */
50 	const char *pcb_string;	/* pointer to input string (or NULL) */
51 	const char *pcb_strptr;	/* pointer to input position */
52 	size_t pcb_strlen;	/* length of pcb_string */
53 	int pcb_sargc;		/* number of script arguments (if any) */
54 	char *const *pcb_sargv;	/* script argument strings (if any) */
55 	ushort_t *pcb_sflagv;	/* script argument flags (DT_IDFLG_* bits) */
56 	dt_scope_t pcb_dstack;	/* declaration processing stack */
57 	dt_node_t *pcb_list;	/* list of allocated parse tree nodes */
58 	dt_node_t *pcb_hold;	/* parse tree nodes on hold until end of defn */
59 	dt_node_t *pcb_root;	/* root of current parse tree */
60 	dt_idstack_t pcb_globals; /* stack of global identifier hash tables */
61 	dt_idhash_t *pcb_locals; /* current hash table of local identifiers */
62 	dt_idhash_t *pcb_idents; /* current hash table of ambiguous idents */
63 	dt_idhash_t *pcb_pragmas; /* current hash table of pending pragmas */
64 	dt_inttab_t *pcb_inttab; /* integer table for constant references */
65 	dt_strtab_t *pcb_strtab; /* string table for string references */
66 	dt_regset_t *pcb_regs;	/* register set for code generation */
67 	dt_irlist_t pcb_ir;	/* list of unrelocated IR instructions */
68 	uint_t pcb_asvidx;	/* assembler vartab index (see dt_as.c) */
69 	ulong_t **pcb_asxrefs;	/* assembler imported xlators (see dt_as.c) */
70 	uint_t pcb_asxreflen;	/* assembler xlator map length (see dt_as.c) */
71 	const dtrace_probedesc_t *pcb_pdesc; /* probedesc for current context */
72 	struct dt_probe *pcb_probe; /* probe associated with current context */
73 	dtrace_probeinfo_t pcb_pinfo; /* info associated with current context */
74 	dtrace_attribute_t pcb_amin; /* stability minimum for compilation */
75 	dt_node_t *pcb_dret;	/* node containing return type for assembler */
76 	dtrace_difo_t *pcb_difo; /* intermediate DIF object made by assembler */
77 	dtrace_prog_t *pcb_prog; /* intermediate program made by compiler */
78 	dtrace_stmtdesc_t *pcb_stmt; /* intermediate stmt made by compiler */
79 	dtrace_ecbdesc_t *pcb_ecbdesc; /* intermediate ecbdesc made by cmplr */
80 	jmp_buf pcb_jmpbuf;	/* setjmp(3C) buffer for error return */
81 	const char *pcb_region;	/* optional region name for yyerror() suffix */
82 	dtrace_probespec_t pcb_pspec; /* probe description evaluation context */
83 	uint_t pcb_cflags;	/* optional compilation flags (see dtrace.h) */
84 	uint_t pcb_idepth;	/* preprocessor #include nesting depth */
85 	yystate_t pcb_yystate;	/* lex/yacc parsing state (see yybegin()) */
86 	int pcb_context;	/* yyparse() rules context (DT_CTX_* value) */
87 	int pcb_token;		/* token to be returned by yylex() (if != 0) */
88 	int pcb_cstate;		/* state to be restored by lexer at state end */
89 	int pcb_braces;		/* number of open curly braces in lexer */
90 	int pcb_brackets;	/* number of open square brackets in lexer */
91 	int pcb_parens;		/* number of open parentheses in lexer */
92 } dt_pcb_t;
93 
94 extern void dt_pcb_push(dtrace_hdl_t *, dt_pcb_t *);
95 extern void dt_pcb_pop(dtrace_hdl_t *, int);
96 
97 #ifdef	__cplusplus
98 }
99 #endif
100 
101 #endif	/* _DT_PCB_H */
102