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: src/sys/ddb/db_sym.h,v 1.19 1999/08/28 00:41:10 peter Exp $ 27 * $DragonFly: src/sys/ddb/db_sym.h,v 1.3 2003/08/27 10:47:13 rob Exp $ 28 */ 29 30 #ifndef _DDB_DB_SYM_H_ 31 #define _DDB_DB_SYM_H_ 32 33 /* 34 * Author: Alessandro Forin, Carnegie Mellon University 35 * Date: 8/90 36 */ 37 38 /* 39 * This module can handle multiple symbol tables 40 */ 41 typedef struct { 42 char *name; /* symtab name */ 43 char *start; /* symtab location */ 44 char *end; 45 char *private; /* optional machdep pointer */ 46 } db_symtab_t; 47 48 /* 49 * Symbol representation is specific to the symtab style: 50 * BSD compilers use dbx' nlist, other compilers might use 51 * a different one 52 */ 53 typedef char * db_sym_t; /* opaque handle on symbols */ 54 typedef const char * c_db_sym_t; /* opaque handle on symbols */ 55 #define DB_SYM_NULL ((db_sym_t)0) 56 #define C_DB_SYM_NULL ((c_db_sym_t)0) 57 58 /* 59 * Non-stripped symbol tables will have duplicates, for instance 60 * the same string could match a parameter name, a local var, a 61 * global var, etc. 62 * We are most concern with the following matches. 63 */ 64 typedef int db_strategy_t; /* search strategy */ 65 66 #define DB_STGY_ANY 0 /* anything goes */ 67 #define DB_STGY_XTRN 1 /* only external symbols */ 68 #define DB_STGY_PROC 2 /* only procedures */ 69 70 /* 71 * Functions exported by the symtable module 72 */ 73 void db_add_symbol_table (char *, char *, char *, char *); 74 /* extend the list of symbol tables */ 75 76 c_db_sym_t db_search_symbol (db_addr_t, db_strategy_t, db_expr_t *); 77 /* find symbol given value */ 78 79 void db_symbol_values (c_db_sym_t, const char **, db_expr_t *); 80 /* return name and value of symbol */ 81 82 #define db_find_sym_and_offset(val,namep,offp) \ 83 db_symbol_values(db_search_symbol(val,DB_STGY_ANY,offp),namep,0) 84 /* find name&value given approx val */ 85 86 #define db_find_xtrn_sym_and_offset(val,namep,offp) \ 87 db_symbol_values(db_search_symbol(val,DB_STGY_XTRN,offp),namep,0) 88 /* ditto, but no locals */ 89 90 int db_eqname (const char *, const char *, int); 91 /* strcmp, modulo leading char */ 92 93 void db_printsym (db_expr_t, db_strategy_t); 94 /* print closest symbol to a value */ 95 96 int db_sym_numargs (c_db_sym_t, int *, char **); 97 98 boolean_t X_db_line_at_pc (db_symtab_t *symtab, c_db_sym_t cursym, 99 char **filename, int *linenum, 100 db_expr_t off); 101 c_db_sym_t X_db_lookup (db_symtab_t *stab, const char *symstr); 102 c_db_sym_t X_db_search_symbol (db_symtab_t *symtab, db_addr_t off, 103 db_strategy_t strategy, 104 db_expr_t *diffp); 105 int X_db_sym_numargs (db_symtab_t *, c_db_sym_t, int *, 106 char **); 107 void X_db_symbol_values (db_symtab_t *symtab, 108 c_db_sym_t sym, const char **namep, 109 db_expr_t *valuep); 110 111 #endif /* !_DDB_DB_SYM_H_ */ 112