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 27 #ifndef _DDB_DB_SYM_H_ 28 #define _DDB_DB_SYM_H_ 29 30 #define db_printf printk 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 void db_add_symbol_table __P((char *, char *, char *, char *)); 78 /* extend the list of symbol tables */ 79 80 db_sym_t db_search_symbol __P((db_addr_t, db_strategy_t, db_expr_t *)); 81 /* find symbol given value */ 82 83 void db_symbol_values __P((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 94 int db_eqname __P((char *, char *, char)); 95 /* strcmp, modulo leading char */ 96 97 void db_printsym __P((db_expr_t, db_strategy_t)); 98 /* print closest symbol to a value */ 99 100 int db_sym_numargs __P((db_sym_t, int *, char **)); 101 102 boolean_t X_db_line_at_pc __P((db_symtab_t *symtab, db_sym_t cursym, 103 char **filename, int *linenum, 104 db_expr_t off)); 105 db_sym_t X_db_lookup __P((db_symtab_t *stab, char *symstr)); 106 db_sym_t X_db_search_symbol __P((db_symtab_t *symtab, db_addr_t off, 107 db_strategy_t strategy, 108 db_expr_t *diffp)); 109 int X_db_sym_numargs __P((db_symtab_t *, db_sym_t, int *, 110 char **)); 111 void X_db_symbol_values __P((db_sym_t sym, char **namep, 112 db_expr_t *valuep)); 113 unsigned long 114 find_faulty_instr(db_expr_t off, int type, int *instr_len); 115 116 #endif /* !_DDB_DB_SYM_H_ */ 117