/* * 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 1.1.1.1 1993/03/21 09:45:37 cgd * initial import of 386bsd-0.1 sources * * 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 */