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 * from db_aout.c,v 1.20 1998/06/07 17:09:36 dfr Exp 28 */ 29 30 /* 31 * Author: David B. Golub, Carnegie Mellon University 32 * Date: 7/90 33 */ 34 /* 35 * Symbol table routines for kld maintained kernels. 36 */ 37 38 #include <sys/param.h> 39 #include <sys/systm.h> 40 #include <sys/linker.h> 41 42 #include <ddb/ddb.h> 43 #include <ddb/db_sym.h> 44 45 #if defined(__x86_64__) 46 vm_offset_t ksym_start, ksym_end; 47 #endif 48 49 c_db_sym_t 50 X_db_lookup(db_symtab_t *stab, const char *symstr) 51 { 52 c_linker_sym_t sym; 53 54 if (linker_ddb_lookup(symstr, &sym) == 0) 55 return (c_db_sym_t) sym; 56 else 57 return (c_db_sym_t) 0; 58 } 59 60 /* 61 * Parameters: 62 * diffp: in/out 63 */ 64 c_db_sym_t 65 X_db_search_symbol(db_symtab_t *symtab, db_addr_t off, db_strategy_t strategy, 66 db_expr_t *diffp) 67 { 68 c_linker_sym_t sym; 69 long diff; 70 71 if (linker_ddb_search_symbol((caddr_t) off, &sym, &diff) == 0) { 72 *diffp = (db_expr_t) diff; 73 return (c_db_sym_t) sym; 74 } 75 76 return 0; 77 } 78 79 /* 80 * Return the name and value for a symbol. 81 */ 82 void 83 X_db_symbol_values(db_symtab_t *symtab, c_db_sym_t dbsym, const char **namep, 84 db_expr_t *valuep) 85 { 86 c_linker_sym_t sym = (c_linker_sym_t) dbsym; 87 linker_symval_t symval; 88 89 symval.name = NULL; 90 symval.value = NULL; 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(db_symtab_t *symtab, c_db_sym_t cursym, char **filename, 101 int *linenum, db_expr_t off) 102 { 103 return FALSE; 104 } 105 106 boolean_t 107 X_db_sym_numargs(db_symtab_t *symtab, c_db_sym_t cursym, int *nargp, 108 char **argnamep) 109 { 110 return FALSE; 111 } 112 113 /* 114 * Initialization routine for a.out files. 115 */ 116 void 117 kdb_init(void) 118 { 119 db_add_symbol_table(0, 0, "kernel", 0); 120 } 121