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 /* 27 * Author: David B. Golub, Carnegie Mellon University 28 * Date: 7/90 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <sys/param.h> 35 36 #include <ddb/ddb.h> 37 #include <ddb/db_access.h> 38 #include <ddb/db_command.h> 39 #include <ddb/db_sym.h> 40 41 /* 42 * Write to file. 43 */ 44 /*ARGSUSED*/ 45 void 46 db_write_cmd(db_expr_t address, boolean_t have_addr, db_expr_t count, 47 char * modif) 48 { 49 register 50 db_addr_t addr; 51 register 52 db_expr_t old_value; 53 db_expr_t new_value; 54 register int size; 55 boolean_t wrote_one = FALSE; 56 57 addr = (db_addr_t) address; 58 59 switch (modif[0]) { 60 case 'b': 61 size = 1; 62 break; 63 case 'h': 64 size = 2; 65 break; 66 case 'l': 67 case '\0': 68 size = 4; 69 break; 70 default: 71 db_error("Unknown size\n"); 72 return; 73 } 74 75 while (db_expression(&new_value)) { 76 old_value = db_get_value(addr, size, FALSE); 77 db_printsym(addr, DB_STGY_ANY); 78 db_printf("\t\t%#8lr\t=\t%#8lr\n", (long)old_value,(long)new_value); 79 db_put_value(addr, size, new_value); 80 addr += size; 81 82 wrote_one = TRUE; 83 } 84 85 if (!wrote_one) 86 db_error("Nothing written.\n"); 87 88 db_next = addr; 89 db_prev = addr - size; 90 91 db_skip_to_eol(); 92 } 93 94