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 [email protected] 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 * HISTORY 28 * $Log: db_write_cmd.c,v $ 29 * Revision 1.1 1992/03/25 21:45:42 pace 30 * Initial revision 31 * 32 * Revision 2.4 91/02/05 17:07:35 mrt 33 * Changed to new Mach copyright 34 * [91/01/31 16:20:19 mrt] 35 * 36 * Revision 2.3 90/10/25 14:44:26 rwd 37 * Changed db_write_cmd to print unsigned. 38 * [90/10/19 rpd] 39 * 40 * Revision 2.2 90/08/27 21:53:54 dbg 41 * Set db_prev and db_next instead of explicitly advancing dot. 42 * [90/08/22 dbg] 43 * Reflected changes in db_printsym()'s calling seq. 44 * [90/08/20 af] 45 * Warn user if nothing was written. 46 * [90/08/07 dbg] 47 * Created. 48 * [90/07/25 dbg] 49 * 50 */ 51 /* 52 * Author: David B. Golub, Carnegie Mellon University 53 * Date: 7/90 54 */ 55 56 #include "param.h" 57 #include "proc.h" 58 #include <machine/db_machdep.h> 59 60 #include <ddb/db_lex.h> 61 #include <ddb/db_access.h> 62 #include <ddb/db_command.h> 63 #include <ddb/db_sym.h> 64 65 /* 66 * Write to file. 67 */ 68 /*ARGSUSED*/ 69 void 70 db_write_cmd(address, have_addr, count, modif) 71 db_expr_t address; 72 boolean_t have_addr; 73 db_expr_t count; 74 char * modif; 75 { 76 register 77 db_addr_t addr; 78 register 79 db_expr_t old_value; 80 db_expr_t new_value; 81 register int size; 82 boolean_t wrote_one = FALSE; 83 84 addr = (db_addr_t) address; 85 86 switch (modif[0]) { 87 case 'b': 88 size = 1; 89 break; 90 case 'h': 91 size = 2; 92 break; 93 case 'l': 94 case '\0': 95 size = 4; 96 break; 97 default: 98 db_error("Unknown size\n"); 99 return; 100 } 101 102 while (db_expression(&new_value)) { 103 old_value = db_get_value(addr, size, FALSE); 104 db_printsym(addr, DB_STGY_ANY); 105 db_printf("\t\t%#8n\t=\t%#8n\n", old_value, new_value); 106 db_put_value(addr, size, new_value); 107 addr += size; 108 109 wrote_one = TRUE; 110 } 111 112 if (!wrote_one) 113 db_error("Nothing written.\n"); 114 115 db_next = addr; 116 db_prev = addr - size; 117 118 db_skip_to_eol(); 119 } 120 121