db_sym.h (199706ee) db_sym.h (56c88695)
1/* $OpenBSD: db_sym.h,v 1.11 1997/05/29 03:28:45 mickey Exp $ */
2/* $NetBSD: db_sym.h,v 1.7 1996/02/05 01:57:16 christos Exp $ */
1/* $NetBSD: db_sym.h,v 1.13 2000/05/25 19:57:36 jhawk Exp $ */
3
4/*
5 * Mach Operating System
6 * Copyright (c) 1993,1992,1991,1990 Carnegie Mellon University
7 * All Rights Reserved.
8 *
9 * Permission to use, copy, modify and distribute this software and its
10 * documentation is hereby granted, provided that both the copyright

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25 *
26 * any improvements or extensions that they make and grant Carnegie Mellon
27 * the rights to redistribute these changes.
28 *
29 * Author: Alessandro Forin, Carnegie Mellon University
30 * Date: 8/90
31 */
32
2
3/*
4 * Mach Operating System
5 * Copyright (c) 1993,1992,1991,1990 Carnegie Mellon University
6 * All Rights Reserved.
7 *
8 * Permission to use, copy, modify and distribute this software and its
9 * documentation is hereby granted, provided that both the copyright

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24 *
25 * any improvements or extensions that they make and grant Carnegie Mellon
26 * the rights to redistribute these changes.
27 *
28 * Author: Alessandro Forin, Carnegie Mellon University
29 * Date: 8/90
30 */
31
33#ifndef _DDB_DB_SYM_
34#define _DDB_DB_SYM_
35
36/*
37 * This module can handle multiple symbol tables
38 */
32/*
33 * This module can handle multiple symbol tables
34 */
39
40#include <sys/queue.h>
41
42typedef struct db_symtab {
43 TAILQ_ENTRY(db_symtab) list; /* all the tabs */
44 char *name; /* symtab name */
45 u_int id; /* id */
35typedef struct {
36 const char *name; /* symtab name */
46 char *start; /* symtab location */
37 char *start; /* symtab location */
47 char *end; /* end of symtab */
48 char *rend; /* real end (as it passed) */
38 char *end;
49 char *private; /* optional machdep pointer */
39 char *private; /* optional machdep pointer */
50} *db_symtab_t;
40} db_symtab_t;
51
41
52extern db_symtab_t db_last_symtab; /* where last symbol was found */
53extern size_t db_nsymtabs; /* number of symbol tables */
42extern db_symtab_t *db_last_symtab; /* where last symbol was found */
54
55/*
56 * Symbol representation is specific to the symtab style:
57 * BSD compilers use dbx' nlist, other compilers might use
58 * a different one
59 */
60typedef char * db_sym_t; /* opaque handle on symbols */
61#define DB_SYM_NULL ((db_sym_t)0)

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67 * We are most concern with the following matches.
68 */
69typedef int db_strategy_t; /* search strategy */
70
71#define DB_STGY_ANY 0 /* anything goes */
72#define DB_STGY_XTRN 1 /* only external symbols */
73#define DB_STGY_PROC 2 /* only procedures */
74
43
44/*
45 * Symbol representation is specific to the symtab style:
46 * BSD compilers use dbx' nlist, other compilers might use
47 * a different one
48 */
49typedef char * db_sym_t; /* opaque handle on symbols */
50#define DB_SYM_NULL ((db_sym_t)0)

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56 * We are most concern with the following matches.
57 */
58typedef int db_strategy_t; /* search strategy */
59
60#define DB_STGY_ANY 0 /* anything goes */
61#define DB_STGY_XTRN 1 /* only external symbols */
62#define DB_STGY_PROC 2 /* only procedures */
63
64
65/*
66 * Internal db_forall function calling convention:
67 *
68 * (*db_forall_func)(stab, sym, name, suffix, prefix, arg);
69 *
70 * stab is the symbol table, symbol the (opaque) symbol pointer,
71 * name the name of the symbol, suffix a string representing
72 * the type, prefix an initial ignorable function prefix (e.g. "_"
73 * in a.out), and arg an opaque argument to be passed in.
74 */
75typedef void (db_forall_func_t)
76 __P((db_symtab_t *, db_sym_t, char *, char *, int, void *));
77
78void X_db_forall __P((db_symtab_t *,
79 db_forall_func_t db_forall_func, void *));
80
81/*
82 * A symbol table may be in one of many formats. All symbol tables
83 * must be of the same format as the master kernel symbol table.
84 */
85typedef struct {
86 const char *sym_format;
87 boolean_t (*sym_init) __P((int, void *, void *, const char *));
88 db_sym_t (*sym_lookup) __P((db_symtab_t *, char *));
89 db_sym_t (*sym_search) __P((db_symtab_t *, db_addr_t, db_strategy_t,
90 db_expr_t *));
91 void (*sym_value) __P((db_symtab_t *, db_sym_t, char **,
92 db_expr_t *));
93 boolean_t (*sym_line_at_pc) __P((db_symtab_t *, db_sym_t,
94 char **, int *, db_expr_t));
95 boolean_t (*sym_numargs) __P((db_symtab_t *, db_sym_t, int *,
96 char **));
97 void (*sym_forall) __P((db_symtab_t *,
98 db_forall_func_t *db_forall_func, void *));
99} db_symformat_t;
100
75extern boolean_t db_qualify_ambiguous_names;
76 /* if TRUE, check across symbol tables
77 * for multiple occurrences of a name.
78 * Might slow down quite a bit */
79
101extern boolean_t db_qualify_ambiguous_names;
102 /* if TRUE, check across symbol tables
103 * for multiple occurrences of a name.
104 * Might slow down quite a bit */
105
106extern unsigned int db_maxoff; /* like gdb's "max-symbolic-offset" */
80/*
81 * Functions exported by the symtable module
82 */
107/*
108 * Functions exported by the symtable module
109 */
83void db_sym_init __P((void));
84int db_add_symbol_table __P((char *, char *, char *, char *, char *));
110int db_add_symbol_table __P((char *, char *, const char *, char *));
85 /* extend the list of symbol tables */
86
87void db_del_symbol_table __P((char *));
88 /* remove a symbol table from list */
111 /* extend the list of symbol tables */
112
113void db_del_symbol_table __P((char *));
114 /* remove a symbol table from list */
89db_symtab_t db_istab __P((size_t));
90db_symtab_t db_symiter __P((db_symtab_t));
91 /* iterate through all the symtabs, if any */
92
93boolean_t db_eqname __P((char *, char *, int));
94 /* strcmp, modulo leading char */
95
96int db_value_of_name __P((char *, db_expr_t *));
97 /* find symbol value given name */
98
99db_sym_t db_lookup __P((char *));
100
115
116boolean_t db_eqname __P((char *, char *, int));
117 /* strcmp, modulo leading char */
118
119int db_value_of_name __P((char *, db_expr_t *));
120 /* find symbol value given name */
121
122db_sym_t db_lookup __P((char *));
123
101char *db_qualify __P((db_sym_t, char *));
124void db_sifting __P((char *, int));
125 /* print partially matching symbol names */
102
103boolean_t db_symbol_is_ambiguous __P((db_sym_t));
104
105db_sym_t db_search_symbol __P((db_addr_t, db_strategy_t, db_expr_t *));
106 /* find symbol given value */
107
108void db_symbol_values __P((db_sym_t, char **, db_expr_t *));
109 /* return name and value of symbol */

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117 /* ditto, but no locals */
118
119void db_printsym __P((db_expr_t, db_strategy_t));
120 /* print closest symbol to a value */
121
122boolean_t db_line_at_pc __P((db_sym_t, char **, int *, db_expr_t));
123
124int db_sym_numargs __P((db_sym_t, int *, char **));
126
127boolean_t db_symbol_is_ambiguous __P((db_sym_t));
128
129db_sym_t db_search_symbol __P((db_addr_t, db_strategy_t, db_expr_t *));
130 /* find symbol given value */
131
132void db_symbol_values __P((db_sym_t, char **, db_expr_t *));
133 /* return name and value of symbol */

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141 /* ditto, but no locals */
142
143void db_printsym __P((db_expr_t, db_strategy_t));
144 /* print closest symbol to a value */
145
146boolean_t db_line_at_pc __P((db_sym_t, char **, int *, db_expr_t));
147
148int db_sym_numargs __P((db_sym_t, int *, char **));
125struct exec;
126void db_stub_xh __P((db_symtab_t, struct exec *));
127int db_symtablen __P((db_symtab_t));
128int db_symatoff __P((db_symtab_t, int, void*, int*));
149char *db_qualify __P((db_sym_t, const char *));
129
150
130/* db_hangman.c */
131void db_hangman __P((db_expr_t, int, db_expr_t, char *));
151/*
152 * XXX - should explicitly ask for aout symbols in machine/db_machdep.h
153 */
154#ifndef DB_NO_AOUT
155#define DB_AOUT_SYMBOLS
156#endif
132
157
133#endif /* _DDB_DB_SYM_H_ */
158#ifdef DB_AOUT_SYMBOLS
159extern db_symformat_t db_symformat_aout;
160#endif
161#ifdef DB_ELF_SYMBOLS
162extern db_symformat_t db_symformat_elf;
163#endif