1 /* $NetBSD: db_sym.h,v 1.13 2000/05/25 19:57:36 jhawk Exp $ */ 2 3 /* 4 * Mach Operating System 5 * Copyright (c) 1993,1992,1991,1990 Carnegie Mellon University 6 * All Rights Reserved. 7 * 8 * Permission to use, copy, modify and distribute this software and its 9 * documentation is hereby granted, provided that both the copyright 10 * notice and this permission notice appear in all copies of the 11 * software, derivative works or modified versions, and any portions 12 * thereof, and that both notices appear in supporting documentation. 13 * 14 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 15 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 16 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 17 * 18 * Carnegie Mellon requests users of this software to return to 19 * 20 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 21 * School of Computer Science 22 * Carnegie Mellon University 23 * Pittsburgh PA 15213-3890 24 * 25 * any improvements or extensions that they make and grant Carnegie Mellon 26 * the rights to redistribute these changes. 27 * 28 * Author: Alessandro Forin, Carnegie Mellon University 29 * Date: 8/90 30 */ 31 32 #ifndef _DDB_DB_SYM_H_ 33 #define _DDB_DB_SYM_H_ 34 35 #include <sys/stdint.h> 36 37 /* 38 * Symbol representation is specific to the symtab style: 39 * BSD compilers use dbx' nlist, other compilers might use 40 * a different one 41 */ 42 typedef char * db_sym_t; /* opaque handle on symbols */ 43 44 /* 45 * Non-stripped symbol tables will have duplicates, for instance 46 * the same string could match a parameter name, a local var, a 47 * global var, etc. 48 * We are most concern with the following matches. 49 */ 50 typedef int db_strategy_t; /* search strategy */ 51 52 #define DB_STGY_ANY 0 /* anything goes */ 53 #define DB_STGY_XTRN 1 /* only external symbols */ 54 #define DB_STGY_PROC 2 /* only procedures */ 55 56 57 /* 58 * Internal db_forall function calling convention: 59 * 60 * (*db_forall_func)(stab, sym, name, suffix, prefix, arg); 61 * 62 * stab is the symbol table, symbol the (opaque) symbol pointer, 63 * name the name of the symbol, suffix a string representing 64 * the type, prefix an initial ignorable function prefix (e.g. "_" 65 * in a.out), and arg an opaque argument to be passed in. 66 */ 67 typedef void (db_forall_func_t)(db_sym_t, char *, char *, int, void *); 68 69 extern unsigned int db_maxoff; /* like gdb's "max-symbolic-offset" */ 70 71 int db_eqname(char *, char *, int); 72 /* strcmp, modulo leading char */ 73 74 int db_value_of_name(char *, db_expr_t *); 75 /* find symbol value given name */ 76 77 db_sym_t db_search_symbol(db_addr_t, db_strategy_t, db_expr_t *); 78 /* find symbol given value */ 79 80 void db_symbol_values(db_sym_t, char **, db_expr_t *); 81 /* return name and value of symbol */ 82 83 #define db_find_sym_and_offset(val,namep,offp) \ 84 db_symbol_values(db_search_symbol(val,DB_STGY_ANY,offp),namep,0) 85 /* find name&value given approx val */ 86 87 #define db_find_xtrn_sym_and_offset(val,namep,offp) \ 88 db_symbol_values(db_search_symbol(val,DB_STGY_XTRN,offp),namep,0) 89 /* ditto, but no locals */ 90 91 void db_printsym(db_expr_t, db_strategy_t, int (*)(const char *, ...)); 92 /* print closest symbol to a value */ 93 94 int db_elf_sym_init(int, void *, void *, const char *); 95 db_sym_t db_elf_sym_search(db_addr_t, db_strategy_t, db_expr_t *); 96 int db_elf_line_at_pc(db_sym_t, char **, int *, db_expr_t); 97 void db_elf_sym_forall(db_forall_func_t db_forall_func, void *); 98 99 bool db_dwarf_line_at_pc(const char *, size_t, uintptr_t, 100 const char **, const char **, int *); 101 102 #endif /* _DDB_DB_SYM_H_ */ 103