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