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_kld.c,v 1.9 2000/01/11 13:25:12 peter Exp $ 27 * $DragonFly: src/sys/ddb/db_kld.c,v 1.2 2003/06/17 04:28:20 dillon Exp $ 28 * from db_aout.c,v 1.20 1998/06/07 17:09:36 dfr Exp 29 */ 30 31 /* 32 * Author: David B. Golub, Carnegie Mellon University 33 * Date: 7/90 34 */ 35 /* 36 * Symbol table routines for kld maintained kernels. 37 */ 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/linker.h> 42 43 #include <ddb/ddb.h> 44 #include <ddb/db_sym.h> 45 46 c_db_sym_t 47 X_db_lookup(stab, symstr) 48 db_symtab_t *stab; 49 const char * symstr; 50 { 51 c_linker_sym_t sym; 52 53 if (linker_ddb_lookup(symstr, &sym) == 0) 54 return (c_db_sym_t) sym; 55 else 56 return (c_db_sym_t) 0; 57 } 58 59 c_db_sym_t 60 X_db_search_symbol(symtab, off, strategy, diffp) 61 db_symtab_t * symtab; 62 register 63 db_addr_t off; 64 db_strategy_t strategy; 65 db_expr_t *diffp; /* in/out */ 66 { 67 c_linker_sym_t sym; 68 long diff; 69 70 if (linker_ddb_search_symbol((caddr_t) off, &sym, &diff) == 0) { 71 *diffp = (db_expr_t) diff; 72 return (c_db_sym_t) sym; 73 } 74 75 return 0; 76 } 77 78 /* 79 * Return the name and value for a symbol. 80 */ 81 void 82 X_db_symbol_values(symtab, dbsym, namep, valuep) 83 db_symtab_t *symtab; 84 c_db_sym_t dbsym; 85 const char **namep; 86 db_expr_t *valuep; 87 { 88 c_linker_sym_t sym = (c_linker_sym_t) dbsym; 89 linker_symval_t symval; 90 91 linker_ddb_symbol_values(sym, &symval); 92 if (namep) 93 *namep = (const char*) symval.name; 94 if (valuep) 95 *valuep = (db_expr_t) symval.value; 96 } 97 98 99 boolean_t 100 X_db_line_at_pc(symtab, cursym, filename, linenum, off) 101 db_symtab_t * symtab; 102 c_db_sym_t cursym; 103 char **filename; 104 int *linenum; 105 db_expr_t off; 106 { 107 return FALSE; 108 } 109 110 boolean_t 111 X_db_sym_numargs(symtab, cursym, nargp, argnamep) 112 db_symtab_t * symtab; 113 c_db_sym_t cursym; 114 int *nargp; 115 char **argnamep; 116 { 117 return FALSE; 118 } 119 120 /* 121 * Initialization routine for a.out files. 122 */ 123 void 124 kdb_init() 125 { 126 db_add_symbol_table(0, 0, "kernel", 0); 127 } 128