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_write_cmd.c,v 1.13 1999/08/28 00:41:12 peter Exp $ 27 * $DragonFly: src/sys/ddb/db_write_cmd.c,v 1.4 2005/12/23 21:35:44 swildner Exp $ 28 */ 29 30 /* 31 * Author: David B. Golub, Carnegie Mellon University 32 * Date: 7/90 33 */ 34 35 #include <sys/param.h> 36 37 #include <ddb/ddb.h> 38 #include <ddb/db_access.h> 39 #include <ddb/db_command.h> 40 #include <ddb/db_sym.h> 41 42 /* 43 * Write to file. 44 */ 45 /*ARGSUSED*/ 46 void 47 db_write_cmd(db_expr_t address, boolean_t have_addr, db_expr_t count, 48 char *modif) 49 { 50 db_addr_t addr; 51 db_expr_t old_value; 52 db_expr_t new_value; 53 int size; 54 boolean_t wrote_one = FALSE; 55 56 addr = (db_addr_t) address; 57 58 switch (modif[0]) { 59 case 'b': 60 size = 1; 61 break; 62 case 'h': 63 size = 2; 64 break; 65 case 'l': 66 case '\0': 67 size = 4; 68 break; 69 default: 70 db_error("Unknown size\n"); 71 return; 72 } 73 74 while (db_expression(&new_value)) { 75 old_value = db_get_value(addr, size, FALSE); 76 db_printsym(addr, DB_STGY_ANY); 77 db_printf("\t\t%#8lr\t=\t%#8lr\n", (long)old_value,(long)new_value); 78 db_put_value(addr, size, new_value); 79 addr += size; 80 81 wrote_one = TRUE; 82 } 83 84 if (!wrote_one) 85 db_error("Nothing written.\n"); 86 87 db_next = addr; 88 db_prev = addr - size; 89 90 db_skip_to_eol(); 91 } 92 93