2 * Mach Operating System
3 * Copyright (c) 1991,1990 Carnegie Mellon University
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.
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.
16 * Carnegie Mellon requests users of this software to return to
18 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
19 * School of Computer Science
20 * Carnegie Mellon University
21 * Pittsburgh PA 15213-3890
23 * any improvements or extensions that they make and grant Carnegie the
24 * rights to redistribute these changes.
27 * Author: David B. Golub, Carnegie Mellon University
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <sys/param.h>
35 #include <sys/systm.h>
39 #include <ddb/db_lex.h>
40 #include <ddb/db_output.h>
41 #include <ddb/db_command.h>
42 #include <ddb/db_sym.h>
43 #include <ddb/db_access.h>
45 static char db_examine_format[TOK_STRING_SIZE] = "x";
47 static void db_examine(db_addr_t, char *, int);
48 static void db_search(db_addr_t, int, db_expr_t, db_expr_t, u_int);
51 * Examine (print) data.
55 db_examine_cmd(db_expr_t addr, boolean_t have_addr, db_expr_t count,
59 db_strcpy(db_examine_format, modif);
64 db_examine((db_addr_t) addr, db_examine_format, count);
68 db_examine(db_addr_t addr, char *fmt, int count)
76 while (--count >= 0 && !db_pager_quit) {
79 while ((c = *fp++) != 0) {
93 case 'a': /* address */
94 size = sizeof(void *);
95 /* always forces a new line */
96 if (db_print_position() != 0)
99 db_printsym(addr, DB_STGY_ANY);
103 if (db_print_position() == 0) {
104 /* Print the address. */
105 db_printsym(addr, DB_STGY_ANY);
112 case 'r': /* signed, current radix */
113 value = db_get_value(addr, size, TRUE);
115 db_printf("%+-*lr", width, (long)value);
117 case 'x': /* unsigned hex */
118 value = db_get_value(addr, size, FALSE);
120 db_printf("%-*lx", width, (long)value);
122 case 'z': /* signed hex */
123 value = db_get_value(addr, size, TRUE);
125 db_printf("%-*ly", width, (long)value);
127 case 'd': /* signed decimal */
128 value = db_get_value(addr, size, TRUE);
130 db_printf("%-*ld", width, (long)value);
132 case 'u': /* unsigned decimal */
133 value = db_get_value(addr, size, FALSE);
135 db_printf("%-*lu", width, (long)value);
137 case 'o': /* unsigned octal */
138 value = db_get_value(addr, size, FALSE);
140 db_printf("%-*lo", width, (long)value);
142 case 'c': /* character */
143 value = db_get_value(addr, 1, FALSE);
145 if (value >= ' ' && value <= '~')
146 db_printf("%c", (int)value);
148 db_printf("\\%03o", (int)value);
150 case 's': /* null-terminated string */
152 value = db_get_value(addr, 1, FALSE);
156 if (value >= ' ' && value <= '~')
157 db_printf("%c", (int)value);
159 db_printf("\\%03o", (int)value);
162 case 'S': /* symbol */
163 value = db_get_value(addr, sizeof(void *),
165 addr += sizeof(void *);
166 db_printsym(value, DB_STGY_ANY);
168 case 'i': /* instruction */
169 addr = db_disasm(addr, FALSE);
171 case 'I': /* instruction, alternate form */
172 addr = db_disasm(addr, TRUE);
177 if (db_print_position() != 0)
189 static char db_print_format = 'x';
193 db_print_cmd(db_expr_t addr, boolean_t have_addr, db_expr_t count,
198 if (modif[0] != '\0')
199 db_print_format = modif[0];
201 switch (db_print_format) {
203 db_printsym((db_addr_t)addr, DB_STGY_ANY);
206 db_printf("%+11lr", (long)addr);
209 db_printf("%8lx", (unsigned long)addr);
212 db_printf("%8ly", (long)addr);
215 db_printf("%11ld", (long)addr);
218 db_printf("%11lu", (unsigned long)addr);
221 db_printf("%16lo", (unsigned long)addr);
225 if (value >= ' ' && value <= '~')
226 db_printf("%c", (int)value);
228 db_printf("\\%03o", (int)value);
235 db_print_loc_and_inst(db_addr_t loc)
237 db_printsym(loc, DB_STGY_PROC);
239 (void) db_disasm(loc, TRUE);
243 * Search for a value in memory.
244 * Syntax: search [/bhl] addr value [mask] [,count]
247 db_search_cmd(db_expr_t dummy1, boolean_t dummy2, db_expr_t dummy3,
262 db_printf("Bad modifier\n");
267 if (!strcmp(db_tok_string, "b"))
269 else if (!strcmp(db_tok_string, "h"))
271 else if (!strcmp(db_tok_string, "l"))
280 if (!db_expression((db_expr_t *)&addr)) {
281 db_printf("Address missing\n");
286 if (!db_expression(&value)) {
287 db_printf("Value missing\n");
292 if (!db_expression(&mask))
297 if (!db_expression(&count)) {
298 db_printf("Count missing\n");
304 count = -1; /* effectively forever */
308 db_search(addr, size, value, mask, count);
312 db_search(db_addr_t addr, int size, db_expr_t value, db_expr_t mask,
315 while (count-- != 0) {
317 if ((db_get_value(addr, size, FALSE) & mask) == value)