drm/linux: Implement some spin_lock_irq* functions
[dragonfly.git] / sys / ddb / db_examine.c
blob4111f9f8e776039b9a23d32ea023360bc3c2cf33
1 /*
2 * Mach Operating System
3 * Copyright (c) 1991,1990 Carnegie Mellon University
4 * All Rights Reserved.
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.
26 * $FreeBSD: src/sys/ddb/db_examine.c,v 1.27 1999/08/28 00:41:07 peter Exp $
30 * Author: David B. Golub, Carnegie Mellon University
31 * Date: 7/90
34 #include <sys/param.h>
35 #include <sys/systm.h>
37 #include <ddb/ddb.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.
53 /*ARGSUSED*/
54 void
55 db_examine_cmd(db_expr_t addr, boolean_t have_addr, db_expr_t count,
56 char *modif)
58 if (modif[0] != '\0')
59 db_strcpy(db_examine_format, modif);
61 if (count == -1)
62 count = 1;
64 db_examine((db_addr_t) addr, db_examine_format, count);
68 * Parameters:
69 * fmt: format string
70 * count: repeat count
72 static void
73 db_examine(db_addr_t addr, char *fmt, int count)
75 int c;
76 db_expr_t value;
77 int size;
78 int width;
79 char * fp;
80 char tbuf[24];
82 while (--count >= 0) {
83 fp = fmt;
84 size = 4;
85 width = 16;
86 while ((c = *fp++) != 0) {
87 switch (c) {
88 case 'b':
89 size = 1;
90 width = 4;
91 break;
92 case 'h':
93 size = 2;
94 width = 8;
95 break;
96 case 'l':
97 size = 4;
98 width = 16;
99 break;
100 case 'g':
101 size = 8;
102 width = 32;
103 break;
104 default:
105 if (db_print_position() == 0) {
106 /* Print the address. */
107 db_printsym(addr, DB_STGY_ANY);
108 db_printf(":\t");
109 db_prev = addr;
112 switch (c) {
113 case 'a':
114 size = sizeof(void *);
115 value = db_get_value(addr, size, TRUE);
116 addr += size;
117 db_printsym(value, DB_STGY_ANY);
118 break;
119 case 'p':
120 size = sizeof(void *);
121 value = db_get_value(addr, size, TRUE);
122 addr += size;
123 db_printf("%p", (void *)value);
124 break;
125 case 'r': /* signed, current radix */
126 value = db_get_value(addr, size, TRUE);
127 addr += size;
128 db_printf("%+-*lr", width, (long)value);
129 break;
130 case 'x': /* unsigned hex */
131 value = db_get_value(addr, size, FALSE);
132 addr += size;
133 db_printf("%-*lx", width, (long)value);
134 break;
135 case 'z': /* signed hex */
136 value = db_get_value(addr, size, TRUE);
137 addr += size;
138 db_format_hex(tbuf, 24, value, FALSE);
139 db_printf("%-*s", width, tbuf);
140 break;
141 case 'd': /* signed decimal */
142 value = db_get_value(addr, size, TRUE);
143 addr += size;
144 db_printf("%-*ld", width, (long)value);
145 break;
146 case 'u': /* unsigned decimal */
147 value = db_get_value(addr, size, FALSE);
148 addr += size;
149 db_printf("%-*lu", width, (long)value);
150 break;
151 case 'o': /* unsigned octal */
152 value = db_get_value(addr, size, FALSE);
153 addr += size;
154 db_printf("%-*lo", width, (long)value);
155 break;
156 case 'c': /* character */
157 value = db_get_value(addr, 1, FALSE);
158 addr += 1;
159 if (value >= ' ' && value <= '~')
160 db_printf("%c", (int)value);
161 else
162 db_printf("\\%03o", (int)value);
163 break;
164 case 's': /* null-terminated string */
165 for (;;) {
166 value = db_get_value(addr, 1, FALSE);
167 addr += 1;
168 if (value == 0)
169 break;
170 if (value >= ' ' && value <= '~')
171 db_printf("%c", (int)value);
172 else
173 db_printf("\\%03o", (int)value);
175 break;
176 case 'i': /* instruction */
177 addr = db_disasm(addr, FALSE, NULL);
178 break;
179 case 'I': /* instruction, alternate form */
180 addr = db_disasm(addr, TRUE, NULL);
181 break;
182 default:
183 break;
185 if (db_print_position() != 0 ||
186 c == 'a' || c == 'p') {
187 db_end_line(1);
189 break;
193 db_next = addr;
197 * Print value.
199 static char db_print_format = 'x';
201 /*ARGSUSED*/
202 void
203 db_print_cmd(db_expr_t addr, boolean_t have_addr, db_expr_t count, char *modif)
205 db_expr_t value;
207 if (modif[0] != '\0')
208 db_print_format = modif[0];
210 switch (db_print_format) {
211 case 'a':
212 db_printsym((db_addr_t)addr, DB_STGY_ANY);
213 break;
214 case 'r':
215 db_printf("%+11lr", (long)addr);
216 break;
217 case 'x':
218 db_printf("%8lx", (unsigned long)addr);
219 break;
220 case 'z':
222 char tbuf[24];
224 db_format_hex(tbuf, 24, addr, FALSE);
225 db_printf("%8s", tbuf);
226 break;
228 case 'd':
229 db_printf("%11ld", (long)addr);
230 break;
231 case 'u':
232 db_printf("%11lu", (unsigned long)addr);
233 break;
234 case 'o':
235 db_printf("%16lo", (unsigned long)addr);
236 break;
237 case 'c':
238 value = addr & 0xFF;
239 if (value >= ' ' && value <= '~')
240 db_printf("%c", (int)value);
241 else
242 db_printf("\\%03o", (int)value);
243 break;
245 db_printf("\n");
248 void
249 db_print_loc_and_inst(db_addr_t loc, db_regs_t *regs)
251 db_printsym(loc, DB_STGY_PROC);
252 db_printf(":\t");
253 db_disasm(loc, TRUE, regs);
257 * Search for a value in memory.
258 * Syntax: search [/bhl] addr value [mask] [,count]
260 void
261 db_search_cmd(db_expr_t dummy1, boolean_t dummy2, db_expr_t dummy3,
262 char *dummy4)
264 int t;
265 db_addr_t addr;
266 int size;
267 db_expr_t value;
268 db_expr_t mask;
269 db_expr_t count;
271 t = db_read_token();
272 if (t == tSLASH) {
273 t = db_read_token();
274 if (t != tIDENT) {
275 bad_modifier:
276 db_printf("Bad modifier\n");
277 db_flush_lex();
278 return;
281 if (!strcmp(db_tok_string, "b"))
282 size = 1;
283 else if (!strcmp(db_tok_string, "h"))
284 size = 2;
285 else if (!strcmp(db_tok_string, "l"))
286 size = 4;
287 else
288 goto bad_modifier;
289 } else {
290 db_unread_token(t);
291 size = 4;
294 if (!db_expression((db_expr_t *)&addr)) {
295 db_printf("Address missing\n");
296 db_flush_lex();
297 return;
300 if (!db_expression(&value)) {
301 db_printf("Value missing\n");
302 db_flush_lex();
303 return;
306 if (!db_expression(&mask))
307 mask = 0xffffffffUL;
309 t = db_read_token();
310 if (t == tCOMMA) {
311 if (!db_expression(&count)) {
312 db_printf("Count missing\n");
313 db_flush_lex();
314 return;
316 } else {
317 db_unread_token(t);
318 count = -1; /* effectively forever */
320 db_skip_to_eol();
322 db_search(addr, size, value, mask, count);
325 static void
326 db_search(db_addr_t addr, int size, db_expr_t value, db_expr_t mask,
327 unsigned int count)
329 while (count-- != 0) {
330 db_prev = addr;
331 if ((db_get_value(addr, size, FALSE) & mask) == value)
332 break;
333 addr += size;
335 db_next = addr;