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 1.5 2008/07/23 16:39:32 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 #if defined(__amd64__) 47 vm_offset_t ksym_start, ksym_end; 48 #endif 49 50 c_db_sym_t 51 X_db_lookup(db_symtab_t *stab, const char *symstr) 52 { 53 c_linker_sym_t sym; 54 55 if (linker_ddb_lookup(symstr, &sym) == 0) 56 return (c_db_sym_t) sym; 57 else 58 return (c_db_sym_t) 0; 59 } 60 61 /* 62 * Parameters: 63 * diffp: in/out 64 */ 65 c_db_sym_t 66 X_db_search_symbol(db_symtab_t *symtab, db_addr_t off, db_strategy_t strategy, 67 db_expr_t *diffp) 68 { 69 c_linker_sym_t sym; 70 long diff; 71 72 if (linker_ddb_search_symbol((caddr_t) off, &sym, &diff) == 0) { 73 *diffp = (db_expr_t) diff; 74 return (c_db_sym_t) sym; 75 } 76 77 return 0; 78 } 79 80 /* 81 * Return the name and value for a symbol. 82 */ 83 void 84 X_db_symbol_values(db_symtab_t *symtab, c_db_sym_t dbsym, const char **namep, 85 db_expr_t *valuep) 86 { 87 c_linker_sym_t sym = (c_linker_sym_t) dbsym; 88 linker_symval_t symval; 89 90 linker_ddb_symbol_values(sym, &symval); 91 if (namep) 92 *namep = (const char*) symval.name; 93 if (valuep) 94 *valuep = (db_expr_t) symval.value; 95 } 96 97 98 boolean_t 99 X_db_line_at_pc(db_symtab_t *symtab, c_db_sym_t cursym, char **filename, 100 int *linenum, db_expr_t off) 101 { 102 return FALSE; 103 } 104 105 boolean_t 106 X_db_sym_numargs(db_symtab_t *symtab, c_db_sym_t cursym, int *nargp, 107 char **argnamep) 108 { 109 return FALSE; 110 } 111 112 /* 113 * Initialization routine for a.out files. 114 */ 115 void 116 kdb_init(void) 117 { 118 db_add_symbol_table(0, 0, "kernel", 0); 119 } 120