1 /* $NetBSD: db_write_cmd.c,v 1.16 2002/02/15 07:33:54 simonb Exp $ */ 2 3 /* 4 * Mach Operating System 5 * Copyright (c) 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 the 26 * rights to redistribute these changes. 27 * 28 * Author: David B. Golub, Carnegie Mellon University 29 * Date: 7/90 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: db_write_cmd.c,v 1.16 2002/02/15 07:33:54 simonb Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/proc.h> 37 38 #include <machine/db_machdep.h> 39 40 #include <ddb/db_lex.h> 41 #include <ddb/db_access.h> 42 #include <ddb/db_command.h> 43 #include <ddb/db_sym.h> 44 #include <ddb/db_extern.h> 45 #include <ddb/db_output.h> 46 47 /* 48 * Write to file. 49 */ 50 /*ARGSUSED*/ 51 void 52 db_write_cmd(db_expr_t address, boolean_t have_addr, db_expr_t count, 53 char *modif) 54 { 55 db_addr_t addr; 56 db_expr_t old_value; 57 db_expr_t new_value; 58 int size; 59 boolean_t wrote_one = FALSE; 60 61 addr = (db_addr_t) address; 62 63 switch (modif[0]) { 64 case 'b': 65 size = 1; 66 break; 67 case 'h': 68 size = 2; 69 break; 70 case 'l': 71 case '\0': 72 size = 4; 73 break; 74 default: 75 size = -1; 76 db_error("Unknown size\n"); 77 /*NOTREACHED*/ 78 } 79 80 while (db_expression(&new_value)) { 81 old_value = db_get_value(addr, size, FALSE); 82 db_printsym(addr, DB_STGY_ANY, db_printf); 83 db_printf("\t\t%s = ", db_num_to_str(old_value)); 84 db_printf("%s\n", db_num_to_str(new_value)); 85 db_put_value(addr, size, new_value); 86 addr += size; 87 88 wrote_one = TRUE; 89 } 90 91 if (!wrote_one) { 92 db_error("Nothing written.\n"); 93 /*NOTREACHED*/ 94 } 95 96 db_next = addr; 97 db_prev = addr - size; 98 99 db_skip_to_eol(); 100 } 101