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15637ed4 RG |
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. | |
15637ed4 | 25 | * |
4c45483e | 26 | * $Id: db_write_cmd.c,v 1.2 1993/10/16 16:47:35 rgrimes Exp $ |
15637ed4 | 27 | */ |
cbeffc91 | 28 | |
15637ed4 RG |
29 | /* |
30 | * Author: David B. Golub, Carnegie Mellon University | |
31 | * Date: 7/90 | |
32 | */ | |
33 | ||
34 | #include "param.h" | |
4c45483e | 35 | #include "systm.h" |
15637ed4 | 36 | #include "proc.h" |
4c45483e | 37 | #include "ddb/ddb.h" |
15637ed4 RG |
38 | |
39 | #include <ddb/db_lex.h> | |
40 | #include <ddb/db_access.h> | |
41 | #include <ddb/db_command.h> | |
42 | #include <ddb/db_sym.h> | |
43 | ||
44 | /* | |
45 | * Write to file. | |
46 | */ | |
47 | /*ARGSUSED*/ | |
48 | void | |
49 | db_write_cmd(address, have_addr, count, modif) | |
50 | db_expr_t address; | |
51 | boolean_t have_addr; | |
52 | db_expr_t count; | |
53 | char * modif; | |
54 | { | |
55 | register | |
56 | db_addr_t addr; | |
57 | register | |
58 | db_expr_t old_value; | |
59 | db_expr_t new_value; | |
60 | register int size; | |
61 | boolean_t wrote_one = FALSE; | |
62 | ||
63 | addr = (db_addr_t) address; | |
64 | ||
65 | switch (modif[0]) { | |
66 | case 'b': | |
67 | size = 1; | |
68 | break; | |
69 | case 'h': | |
70 | size = 2; | |
71 | break; | |
72 | case 'l': | |
73 | case '\0': | |
74 | size = 4; | |
75 | break; | |
76 | default: | |
77 | db_error("Unknown size\n"); | |
78 | return; | |
79 | } | |
80 | ||
81 | while (db_expression(&new_value)) { | |
82 | old_value = db_get_value(addr, size, FALSE); | |
83 | db_printsym(addr, DB_STGY_ANY); | |
84 | db_printf("\t\t%#8n\t=\t%#8n\n", old_value, 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 | ||
94 | db_next = addr; | |
95 | db_prev = addr - size; | |
96 | ||
97 | db_skip_to_eol(); | |
98 | } | |
99 |