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
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