1 /* 2 * Mach Operating System 3 * Copyright (c) 1991,1990 Carnegie Mellon University 4 * All Rights Reserved. 5 * 6 * Permission to use, copy, modify and distribute this software and its 7 * documentation is hereby granted, provided that both the copyright 8 * notice and this permission notice appear in all copies of the 9 * software, derivative works or modified versions, and any portions 10 * thereof, and that both notices appear in supporting documentation. 11 * 12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS 13 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 15 * 16 * Carnegie Mellon requests users of this software to return to 17 * 18 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 19 * School of Computer Science 20 * Carnegie Mellon University 21 * Pittsburgh PA 15213-3890 22 * 23 * any improvements or extensions that they make and grant Carnegie the 24 * rights to redistribute these changes. 25 * 26 * $Id: db_sym.h,v 1.2 1993/10/16 16:47:27 rgrimes Exp $ 27 */ 28 29 #ifndef _DDB_DB_SYM_H_ 30 #define _DDB_DB_SYM_H_ 1 31 32 /* 33 * Author: Alessandro Forin, Carnegie Mellon University 34 * Date: 8/90 35 */ 36 37 /* 38 * This module can handle multiple symbol tables 39 */ 40 typedef struct { 41 char *name; /* symtab name */ 42 char *start; /* symtab location */ 43 char *end; 44 char *private; /* optional machdep pointer */ 45 } db_symtab_t; 46 47 extern db_symtab_t *db_last_symtab; /* where last symbol was found */ 48 49 /* 50 * Symbol representation is specific to the symtab style: 51 * BSD compilers use dbx' nlist, other compilers might use 52 * a different one 53 */ 54 typedef char * db_sym_t; /* opaque handle on symbols */ 55 #define DB_SYM_NULL ((db_sym_t)0) 56 57 /* 58 * Non-stripped symbol tables will have duplicates, for instance 59 * the same string could match a parameter name, a local var, a 60 * global var, etc. 61 * We are most concern with the following matches. 62 */ 63 typedef int db_strategy_t; /* search strategy */ 64 65 #define DB_STGY_ANY 0 /* anything goes */ 66 #define DB_STGY_XTRN 1 /* only external symbols */ 67 #define DB_STGY_PROC 2 /* only procedures */ 68 69 extern boolean_t db_qualify_ambiguous_names; 70 /* if TRUE, check across symbol tables 71 * for multiple occurrences of a name. 72 * Might slow down quite a bit */ 73 74 /* 75 * Functions exported by the symtable module 76 */ 77 extern void db_add_symbol_table(); 78 /* extend the list of symbol tables */ 79 80 extern int db_value_of_name(/* char*, db_expr_t* */); 81 /* find symbol value given name */ 82 83 extern db_sym_t db_search_symbol(/* db_expr_t, db_strategy_t, int* */); 84 /* find symbol given value */ 85 86 extern void db_symbol_values(/* db_sym_t, char**, db_expr_t* */); 87 /* return name and value of symbol */ 88 89 #define db_find_sym_and_offset(val,namep,offp) \ 90 db_symbol_values(db_search_symbol(val,DB_STGY_ANY,offp),namep,0) 91 /* find name&value given approx val */ 92 93 #define db_find_xtrn_sym_and_offset(val,namep,offp) \ 94 db_symbol_values(db_search_symbol(val,DB_STGY_XTRN,offp),namep,0) 95 /* ditto, but no locals */ 96 97 extern int db_eqname(/* char*, char*, char */); 98 /* strcmp, modulo leading char */ 99 100 extern void db_printsym(/* db_expr_t, db_strategy_t */); 101 /* print closest symbol to a value */ 102 #endif /* _DDB_DB_SYM_H_ */ 103