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 */ 28 29 #ifndef _DDB_DB_SYM_H_ 30 #define _DDB_DB_SYM_H_ 31 32 #ifndef _DDB_DDB_H_ 33 #include <ddb/ddb.h> 34 #endif 35 36 /* 37 * Author: Alessandro Forin, Carnegie Mellon University 38 * Date: 8/90 39 */ 40 41 /* 42 * This module can handle multiple symbol tables 43 */ 44 typedef struct { 45 char *name; /* symtab name */ 46 char *start; /* symtab location */ 47 char *end; 48 char *private; /* optional machdep pointer */ 49 } db_symtab_t; 50 51 /* 52 * Symbol representation is specific to the symtab style: 53 * BSD compilers use dbx' nlist, other compilers might use 54 * a different one 55 */ 56 typedef char * db_sym_t; /* opaque handle on symbols */ 57 typedef const char * c_db_sym_t; /* opaque handle on symbols */ 58 #define DB_SYM_NULL ((db_sym_t)0) 59 #define C_DB_SYM_NULL ((c_db_sym_t)0) 60 61 /* 62 * Non-stripped symbol tables will have duplicates, for instance 63 * the same string could match a parameter name, a local var, a 64 * global var, etc. 65 * We are most concern with the following matches. 66 */ 67 typedef int db_strategy_t; /* search strategy */ 68 69 #define DB_STGY_ANY 0 /* anything goes */ 70 #define DB_STGY_XTRN 1 /* only external symbols */ 71 #define DB_STGY_PROC 2 /* only procedures */ 72 73 /* 74 * Functions exported by the symtable module 75 */ 76 void db_add_symbol_table (char *, char *, char *, char *); 77 /* extend the list of symbol tables */ 78 79 c_db_sym_t db_search_symbol (db_addr_t, db_strategy_t, db_expr_t *); 80 /* find symbol given value */ 81 82 void db_symbol_values (c_db_sym_t, const char **, db_expr_t *); 83 /* return name and value of symbol */ 84 85 #define db_find_sym_and_offset(val,namep,offp) \ 86 db_symbol_values(db_search_symbol(val,DB_STGY_ANY,offp),namep,0) 87 /* find name&value given approx val */ 88 89 #define db_find_xtrn_sym_and_offset(val,namep,offp) \ 90 db_symbol_values(db_search_symbol(val,DB_STGY_XTRN,offp),namep,0) 91 /* ditto, but no locals */ 92 93 boolean_t db_eqname (const char *, const char *, int); 94 /* strcmp, modulo leading char */ 95 96 void db_printsym (db_expr_t, db_strategy_t); 97 /* print closest symbol to a value */ 98 99 int db_sym_numargs (c_db_sym_t, int *, char **); 100 101 boolean_t X_db_line_at_pc (db_symtab_t *symtab, c_db_sym_t cursym, 102 char **filename, int *linenum, 103 db_expr_t off); 104 c_db_sym_t X_db_lookup (db_symtab_t *stab, const char *symstr); 105 c_db_sym_t X_db_search_symbol (db_symtab_t *symtab, db_addr_t off, 106 db_strategy_t strategy, 107 db_expr_t *diffp); 108 boolean_t X_db_sym_numargs (db_symtab_t *, c_db_sym_t, int *, 109 char **); 110 void X_db_symbol_values (db_symtab_t *symtab, 111 c_db_sym_t sym, const char **namep, 112 db_expr_t *valuep); 113 114 #endif /* !_DDB_DB_SYM_H_ */ 115