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 * $FreeBSD$ 27 */ 28 29 #ifndef _DDB_DB_SYM_H_ 30 #define _DDB_DB_SYM_H_ 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 /* 48 * Symbol representation is specific to the symtab style: 49 * BSD compilers use dbx' nlist, other compilers might use 50 * a different one 51 */ 52 typedef char * db_sym_t; /* opaque handle on symbols */ 53 typedef const char * c_db_sym_t; /* const opaque handle on symbols */ 54 #define DB_SYM_NULL ((db_sym_t)0) 55 #define C_DB_SYM_NULL ((c_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 /* 70 * Functions exported by the symtable module 71 */ 72 void db_add_symbol_table(char *, char *, char *, char *); 73 /* extend the list of symbol tables */ 74 75 c_db_sym_t db_search_symbol(db_addr_t, db_strategy_t, db_expr_t *); 76 /* find symbol given value */ 77 78 void db_symbol_values(c_db_sym_t, const char **, db_expr_t *); 79 /* return name and value of symbol */ 80 81 #define db_find_sym_and_offset(val,namep,offp) \ 82 db_symbol_values(db_search_symbol(val,DB_STGY_ANY,offp),namep,0) 83 /* find name&value given approx val */ 84 85 #define db_find_xtrn_sym_and_offset(val,namep,offp) \ 86 db_symbol_values(db_search_symbol(val,DB_STGY_XTRN,offp),namep,0) 87 /* ditto, but no locals */ 88 89 bool db_eqname(const char *, const char *, int); 90 /* strcmp, modulo leading char */ 91 92 void db_printsym(db_expr_t, db_strategy_t); 93 /* print closest symbol to a value */ 94 95 bool db_sym_numargs(c_db_sym_t, int *, char **); 96 97 bool X_db_line_at_pc(db_symtab_t *symtab, c_db_sym_t cursym, 98 char **filename, int *linenum, db_expr_t off); 99 c_db_sym_t X_db_lookup(db_symtab_t *stab, const char *symstr); 100 c_db_sym_t X_db_search_symbol(db_symtab_t *symtab, db_addr_t off, 101 db_strategy_t strategy, db_expr_t *diffp); 102 bool X_db_sym_numargs(db_symtab_t *, c_db_sym_t, int *, char **); 103 void X_db_symbol_values(db_symtab_t *symtab, c_db_sym_t sym, 104 const char **namep, db_expr_t *valuep); 105 106 #endif /* !_DDB_DB_SYM_H_ */ 107