db_sym.h revision 7090
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 1.6 1994/09/27 03:34:57 phk 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 */ 40typedef 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 47extern 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 */ 54typedef 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 */ 63typedef 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 69extern 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 */ 77extern void db_add_symbol_table(); 78 /* extend the list of symbol tables */ 79 80extern db_sym_t db_search_symbol(/* db_expr_t, db_strategy_t, int* */); 81 /* find symbol given value */ 82 83extern void db_symbol_values(/* db_sym_t, char**, db_expr_t* */); 84 /* return name and value of symbol */ 85 86#define db_find_sym_and_offset(val,namep,offp) \ 87 db_symbol_values(db_search_symbol(val,DB_STGY_ANY,offp),namep,0) 88 /* find name&value given approx val */ 89 90#define db_find_xtrn_sym_and_offset(val,namep,offp) \ 91 db_symbol_values(db_search_symbol(val,DB_STGY_XTRN,offp),namep,0) 92 /* ditto, but no locals */ 93 94extern int db_eqname(/* char*, char*, char */); 95 /* strcmp, modulo leading char */ 96 97extern void db_printsym(/* db_expr_t, db_strategy_t */); 98 /* print closest symbol to a value */ 99extern boolean_t db_line_at_pc(db_sym_t, char **, int *, db_expr_t); 100extern int db_sym_numargs(db_sym_t, int *, char **); 101extern int X_db_sym_numargs(db_symtab_t *, db_sym_t, int *, char **); 102 103#endif /* _DDB_DB_SYM_H_ */ 104