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/*
* Mach Operating System
* Copyright (c) 1991,1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* HISTORY
* $Log: db_sym.h,v $
* Revision 1.1 1992/03/25 21:45:29 pace
* Initial revision
*
* Revision 2.3 91/02/05 17:07:12 mrt
* Changed to new Mach copyright
* [91/01/31 16:19:27 mrt]
*
* Revision 2.2 90/08/27 21:52:39 dbg
* Changed type of db_sym_t to char * - it's a better type for an
* opaque pointer.
* [90/08/22 dbg]
*
* Created.
* [90/08/19 af]
*
*/
/*
* Author: Alessandro Forin, Carnegie Mellon University
* Date: 8/90
*/
/*
* This module can handle multiple symbol tables
*/
typedef struct {
char *name; /* symtab name */
char *start; /* symtab location */
char *end;
char *private; /* optional machdep pointer */
} db_symtab_t;
extern db_symtab_t *db_last_symtab; /* where last symbol was found */
/*
* Symbol representation is specific to the symtab style:
* BSD compilers use dbx' nlist, other compilers might use
* a different one
*/
typedef char * db_sym_t; /* opaque handle on symbols */
#define DB_SYM_NULL ((db_sym_t)0)
/*
* Non-stripped symbol tables will have duplicates, for instance
* the same string could match a parameter name, a local var, a
* global var, etc.
* We are most concern with the following matches.
*/
typedef int db_strategy_t; /* search strategy */
#define DB_STGY_ANY 0 /* anything goes */
#define DB_STGY_XTRN 1 /* only external symbols */
#define DB_STGY_PROC 2 /* only procedures */
extern boolean_t db_qualify_ambiguous_names;
/* if TRUE, check across symbol tables
* for multiple occurrences of a name.
* Might slow down quite a bit */
/*
* Functions exported by the symtable module
*/
extern void db_add_symbol_table();
/* extend the list of symbol tables */
extern int db_value_of_name(/* char*, db_expr_t* */);
/* find symbol value given name */
extern db_sym_t db_search_symbol(/* db_expr_t, db_strategy_t, int* */);
/* find symbol given value */
extern void db_symbol_values(/* db_sym_t, char**, db_expr_t* */);
/* return name and value of symbol */
#define db_find_sym_and_offset(val,namep,offp) \
db_symbol_values(db_search_symbol(val,DB_STGY_ANY,offp),namep,0)
/* find name&value given approx val */
#define db_find_xtrn_sym_and_offset(val,namep,offp) \
db_symbol_values(db_search_symbol(val,DB_STGY_XTRN,offp),namep,0)
/* ditto, but no locals */
extern int db_eqname(/* char*, char*, char */);
/* strcmp, modulo leading char */
extern void db_printsym(/* db_expr_t, db_strategy_t */);
/* print closest symbol to a value */
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