1 /* $NetBSD: db_sym.h,v 1.6 1994/10/09 08:19:41 mycroft Exp $ */ 2 3 /* 4 * Mach Operating System 5 * Copyright (c) 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 10 * notice and this permission notice appear in all copies of the 11 * software, derivative works or modified versions, and any portions 12 * thereof, and that both notices appear in supporting documentation. 13 * 14 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS 15 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 16 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 17 * 18 * Carnegie Mellon requests users of this software to return to 19 * 20 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 21 * School of Computer Science 22 * Carnegie Mellon University 23 * Pittsburgh PA 15213-3890 24 * 25 * any improvements or extensions that they make and grant Carnegie the 26 * rights to redistribute these changes. 27 * 28 * Author: Alessandro Forin, Carnegie Mellon University 29 * Date: 8/90 30 */ 31 32 /* 33 * This module can handle multiple symbol tables 34 */ 35 typedef struct { 36 char *name; /* symtab name */ 37 char *start; /* symtab location */ 38 char *end; 39 char *private; /* optional machdep pointer */ 40 } db_symtab_t; 41 42 extern db_symtab_t *db_last_symtab; /* where last symbol was found */ 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 */ 49 typedef char * db_sym_t; /* opaque handle on symbols */ 50 #define DB_SYM_NULL ((db_sym_t)0) 51 52 /* 53 * Non-stripped symbol tables will have duplicates, for instance 54 * the same string could match a parameter name, a local var, a 55 * global var, etc. 56 * We are most concern with the following matches. 57 */ 58 typedef 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 extern boolean_t db_qualify_ambiguous_names; 65 /* if TRUE, check across symbol tables 66 * for multiple occurrences of a name. 67 * Might slow down quite a bit */ 68 69 /* 70 * Functions exported by the symtable module 71 */ 72 int db_add_symbol_table __P((char *, char *, char *, char *)); 73 /* extend the list of symbol tables */ 74 75 void db_del_symbol_table __P((char *)); 76 /* remove a symbol table from list */ 77 78 int db_value_of_name __P((char *, db_expr_t *)); 79 /* find symbol value given name */ 80 81 db_sym_t db_search_symbol __P((db_addr_t, db_strategy_t, db_expr_t *)); 82 /* find symbol given value */ 83 84 void db_symbol_values __P((db_sym_t, char **, db_expr_t *)); 85 /* return name and value of symbol */ 86 87 #define db_find_sym_and_offset(val,namep,offp) \ 88 db_symbol_values(db_search_symbol(val,DB_STGY_ANY,offp),namep,0) 89 /* find name&value given approx val */ 90 91 #define db_find_xtrn_sym_and_offset(val,namep,offp) \ 92 db_symbol_values(db_search_symbol(val,DB_STGY_XTRN,offp),namep,0) 93 /* ditto, but no locals */ 94 95 int db_eqname __P((char *, char *, char)); 96 /* strcmp, modulo leading char */ 97 98 void db_printsym __P((db_expr_t, db_strategy_t)); 99 /* print closest symbol to a value */ 100