[unix-history] / sys / ddb / db_examine.c

/* 
 * Mach Operating System
 * Copyright (c) 1991,1990 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS 
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 *
 *	$Id$
 */

/*
 *	Author: David B. Golub, Carnegie Mellon University
 *	Date:	7/90
 */
#include "param.h"
#include "proc.h"
#include <machine/db_machdep.h>		/* type definitions */

#include <ddb/db_lex.h>
#include <ddb/db_output.h>
#include <ddb/db_command.h>
#include <ddb/db_sym.h>

char	db_examine_format[TOK_STRING_SIZE] = "x";

extern	db_addr_t db_disasm(/* db_addr_t, boolean_t */);
			/* instruction disassembler */

/*
 * Examine (print) data.
 */
/*ARGSUSED*/
void
db_examine_cmd(addr, have_addr, count, modif)
	db_expr_t	addr;
	int		have_addr;
	db_expr_t	count;
	char *		modif;
{
	if (modif[0] != '\0')
	    db_strcpy(db_examine_format, modif);

	if (count == -1)
	    count = 1;

	db_examine((db_addr_t) addr, db_examine_format, count);
}

db_examine(addr, fmt, count)
	register
	db_addr_t	addr;
	char *		fmt;	/* format string */
	int		count;	/* repeat count */
{
	int		c;
	db_expr_t	value;
	int		size;
	int		width;
	char *		fp;

	while (--count >= 0) {
	    fp = fmt;
	    size = 4;
	    width = 16;
	    while ((c = *fp++) != 0) {
		switch (c) {
		    case 'b':
			size = 1;
			width = 4;
			break;
		    case 'h':
			size = 2;
			width = 8;
			break;
		    case 'l':
			size = 4;
			width = 16;
			break;
		    case 'a':	/* address */
			/* always forces a new line */
			if (db_print_position() != 0)
			    db_printf("\n");
			db_prev = addr;
			db_printsym(addr, DB_STGY_ANY);
			db_printf(":\t");
			break;
		    default:
			if (db_print_position() == 0) {
			    /* If we hit a new symbol, print it */
			    char *	name;
			    db_expr_t	off;

			    db_find_sym_and_offset(addr, &name, &off);
			    if (off == 0)
				db_printf("%s:\t", name);
			    else
				db_printf("\t\t");

			    db_prev = addr;
			}

			switch (c) {
			    case 'r':	/* signed, current radix */
				value = db_get_value(addr, size, TRUE);
				addr += size;
				db_printf("%-*r", width, value);
				break;
			    case 'x':	/* unsigned hex */
				value = db_get_value(addr, size, FALSE);
				addr += size;
				db_printf("%-*x", width, value);
				break;
			    case 'z':	/* signed hex */
				value = db_get_value(addr, size, TRUE);
				addr += size;
				db_printf("%-*z", width, value);
				break;
			    case 'd':	/* signed decimal */
				value = db_get_value(addr, size, TRUE);
				addr += size;
				db_printf("%-*d", width, value);
				break;
			    case 'u':	/* unsigned decimal */
				value = db_get_value(addr, size, FALSE);
				addr += size;
				db_printf("%-*u", width, value);
				break;
			    case 'o':	/* unsigned octal */
				value = db_get_value(addr, size, FALSE);
				addr += size;
				db_printf("%-*o", width, value);
				break;
			    case 'c':	/* character */
				value = db_get_value(addr, 1, FALSE);
				addr += 1;
				if (value >= ' ' && value <= '~')
				    db_printf("%c", value);
				else
				    db_printf("\\%03o", value);
				break;
			    case 's':	/* null-terminated string */
				for (;;) {
				    value = db_get_value(addr, 1, FALSE);
				    addr += 1;
				    if (value == 0)
					break;
				    if (value >= ' ' && value <= '~')
					db_printf("%c", value);
				    else
					db_printf("\\%03o", value);
				}
				break;
			    case 'i':	/* instruction */
				addr = db_disasm(addr, FALSE);
				break;
			    case 'I':	/* instruction, alternate form */
				addr = db_disasm(addr, TRUE);
				break;
			    default:
				break;
			}
			if (db_print_position() != 0)
			    db_end_line();
			break;
		}
	    }
	}
	db_next = addr;
}

/*
 * Print value.
 */
char	db_print_format = 'x';

/*ARGSUSED*/
void
db_print_cmd(addr, have_addr, count, modif)
	db_expr_t	addr;
	int		have_addr;
	db_expr_t	count;
	char *		modif;
{
	db_expr_t	value;

	if (modif[0] != '\0')
	    db_print_format = modif[0];

	switch (db_print_format) {
	    case 'a':
		db_printsym((db_addr_t)addr, DB_STGY_ANY);
		break;
	    case 'r':
		db_printf("%11r", addr);
		break;
	    case 'x':
		db_printf("%8x", addr);
		break;
	    case 'z':
		db_printf("%8z", addr);
		break;
	    case 'd':
		db_printf("%11d", addr);
		break;
	    case 'u':
		db_printf("%11u", addr);
		break;
	    case 'o':
		db_printf("%16o", addr);
		break;
	    case 'c':
		value = addr & 0xFF;
		if (value >= ' ' && value <= '~')
		    db_printf("%c", value);
		else
		    db_printf("\\%03o", value);
		break;
	}
	db_printf("\n");
}

db_print_loc_and_inst(loc)
	db_addr_t	loc;
{
	db_printsym(loc, DB_STGY_PROC);
	db_printf(":\t");
	(void) db_disasm(loc, TRUE);
}

db_strcpy(dst, src)
	register char *dst;
	register char *src;
{
	while (*dst++ = *src++)
	    ;
}

/*
 * Search for a value in memory.
 * Syntax: search [/bhl] addr value [mask] [,count]
 */
void
db_search_cmd()
{
	int		t;
	db_addr_t	addr;
	int		size;
	db_expr_t	value;
	db_expr_t	mask;
	unsigned int	count;

	t = db_read_token();
	if (t == tSLASH) {
	    t = db_read_token();
	    if (t != tIDENT) {
	      bad_modifier:
		db_printf("Bad modifier\n");
		db_flush_lex();
		return;
	    }

	    if (!strcmp(db_tok_string, "b"))
		size = 1;
	    else if (!strcmp(db_tok_string, "h"))
		size = 2;
	    else if (!strcmp(db_tok_string, "l"))
		size = 4;
	    else
		goto bad_modifier;
	} else {
	    db_unread_token(t);
	    size = 4;
	}

	if (!db_expression(&addr)) {
	    db_printf("Address missing\n");
	    db_flush_lex();
	    return;
	}

	if (!db_expression(&value)) {
	    db_printf("Value missing\n");
	    db_flush_lex();
	    return;
	}

	if (!db_expression(&mask))
	    mask = 0xffffffff;

	t = db_read_token();
	if (t == tCOMMA) {
	    if (!db_expression(&count)) {
		db_printf("Count missing\n");
		db_flush_lex();
		return;
	    }
	} else {
	    db_unread_token(t);
	    count = -1;		/* effectively forever */
	}
	db_skip_to_eol();

	db_search(addr, size, value, mask, count);
}

db_search(addr, size, value, mask, count)
	register
	db_addr_t	addr;
	int		size;
	db_expr_t	value;
	db_expr_t	mask;
	unsigned int	count;
{
	while (count-- != 0) {
		db_prev = addr;
		if ((db_get_value(addr, size, FALSE) & mask) == value)
			break;
		addr += size;
	}
	db_next = addr;
}
Commit	Line	Data
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	*
78ed81a3	26	* $Id$
15637ed4	27	*/
78ed81a3	28
15637ed4 RG	29	/*
	30	* Author: David B. Golub, Carnegie Mellon University
	31	* Date: 7/90
	32	*/
	33	#include "param.h"
	34	#include "proc.h"
	35	#include <machine/db_machdep.h> /* type definitions */
	36
	37	#include <ddb/db_lex.h>
	38	#include <ddb/db_output.h>
	39	#include <ddb/db_command.h>
	40	#include <ddb/db_sym.h>
	41
	42	char db_examine_format[TOK_STRING_SIZE] = "x";
	43
	44	extern db_addr_t db_disasm(/* db_addr_t, boolean_t */);
	45	/* instruction disassembler */
	46
	47	/*
	48	* Examine (print) data.
	49	*/
	50	/ARGSUSED/
	51	void
	52	db_examine_cmd(addr, have_addr, count, modif)
	53	db_expr_t addr;
	54	int have_addr;
	55	db_expr_t count;
	56	char * modif;
	57	{
	58	if (modif[0] != '\0')
	59	db_strcpy(db_examine_format, modif);
	60
	61	if (count == -1)
	62	count = 1;
	63
	64	db_examine((db_addr_t) addr, db_examine_format, count);
	65	}
	66
	67	db_examine(addr, fmt, count)
	68	register
	69	db_addr_t addr;
	70	char * fmt; /* format string */
	71	int count; /* repeat count */
	72	{
	73	int c;
	74	db_expr_t value;
	75	int size;
	76	int width;
	77	char * fp;
	78
	79	while (--count >= 0) {
	80	fp = fmt;
	81	size = 4;
	82	width = 16;
	83	while ((c = *fp++) != 0) {
	84	switch (c) {
	85	case 'b':
	86	size = 1;
	87	width = 4;
	88	break;
	89	case 'h':
	90	size = 2;
	91	width = 8;
	92	break;
93	case 'l':
94	size = 4;
95	width = 16;
96	break;
97	case 'a': /* address */
98	/* always forces a new line */
99	if (db_print_position() != 0)
100	db_printf("\n");
101	db_prev = addr;
102	db_printsym(addr, DB_STGY_ANY);
103	db_printf(":\t");
104	break;
105	default:
106	if (db_print_position() == 0) {
107	/* If we hit a new symbol, print it */
108	char * name;
109	db_expr_t off;
110
111	db_find_sym_and_offset(addr, &name, &off);
112	if (off == 0)
113	db_printf("%s:\t", name);
114	else
115	db_printf("\t\t");
116
117	db_prev = addr;
118	}
119
120	switch (c) {
121	case 'r': /* signed, current radix */
122	value = db_get_value(addr, size, TRUE);
123	addr += size;
124	db_printf("%-*r", width, value);
125	break;
126	case 'x': /* unsigned hex */
127	value = db_get_value(addr, size, FALSE);
128	addr += size;
129	db_printf("%-*x", width, value);
130	break;
131	case 'z': /* signed hex */
132	value = db_get_value(addr, size, TRUE);
133	addr += size;
134	db_printf("%-*z", width, value);
135	break;
136	case 'd': /* signed decimal */
137	value = db_get_value(addr, size, TRUE);
138	addr += size;
139	db_printf("%-*d", width, value);
140	break;
141	case 'u': /* unsigned decimal */
142	value = db_get_value(addr, size, FALSE);
143	addr += size;
144	db_printf("%-*u", width, value);
145	break;
146	case 'o': /* unsigned octal */
147	value = db_get_value(addr, size, FALSE);
148	addr += size;
149	db_printf("%-*o", width, value);
150	break;
151	case 'c': /* character */
152	value = db_get_value(addr, 1, FALSE);
153	addr += 1;
154	if (value >= ' ' && value <= '~')
155	db_printf("%c", value);
156	else
157	db_printf("\\%03o", value);
158	break;
159	case 's': /* null-terminated string */
160	for (;;) {
161	value = db_get_value(addr, 1, FALSE);
162	addr += 1;
163	if (value == 0)
164	break;
165	if (value >= ' ' && value <= '~')
166	db_printf("%c", value);
167	else
168	db_printf("\\%03o", value);
169	}
170	break;
171	case 'i': /* instruction */
172	addr = db_disasm(addr, FALSE);
173	break;
174	case 'I': /* instruction, alternate form */
175	addr = db_disasm(addr, TRUE);
176	break;
177	default:
178	break;
179	}
180	if (db_print_position() != 0)
181	db_end_line();
182	break;
183	}
184	}
185	}
186	db_next = addr;
187	}
188
189	/*
190	* Print value.
191	*/
192	char db_print_format = 'x';
193
194	/ARGSUSED/
195	void
196	db_print_cmd(addr, have_addr, count, modif)
197	db_expr_t addr;
198	int have_addr;
199	db_expr_t count;
200	char * modif;
201	{
202	db_expr_t value;
203
204	if (modif[0] != '\0')
205	db_print_format = modif[0];
206
207	switch (db_print_format) {
208	case 'a':
209	db_printsym((db_addr_t)addr, DB_STGY_ANY);
210	break;
211	case 'r':
212	db_printf("%11r", addr);
213	break;
214	case 'x':
215	db_printf("%8x", addr);
216	break;
217	case 'z':
218	db_printf("%8z", addr);
219	break;
220	case 'd':
221	db_printf("%11d", addr);
222	break;
223	case 'u':
224	db_printf("%11u", addr);
225	break;
226	case 'o':
227	db_printf("%16o", addr);
228	break;
229	case 'c':
230	value = addr & 0xFF;
231	if (value >= ' ' && value <= '~')
232	db_printf("%c", value);
233	else
234	db_printf("\\%03o", value);
235	break;
236	}
237	db_printf("\n");
238	}
239
240	db_print_loc_and_inst(loc)
241	db_addr_t loc;
242	{
243	db_printsym(loc, DB_STGY_PROC);
244	db_printf(":\t");
245	(void) db_disasm(loc, TRUE);
246	}
247
248	db_strcpy(dst, src)
249	register char *dst;
250	register char *src;
251	{
252	while (dst++ = src++)
253	;
254	}
255
256	/*
257	* Search for a value in memory.
258	* Syntax: search [/bhl] addr value [mask] [,count]
259	*/
260	void
261	db_search_cmd()
262	{
263	int t;
264	db_addr_t addr;
265	int size;
266	db_expr_t value;
267	db_expr_t mask;
268	unsigned int count;
269
270	t = db_read_token();
271	if (t == tSLASH) {
272	t = db_read_token();
273	if (t != tIDENT) {
274	bad_modifier:
275	db_printf("Bad modifier\n");
276	db_flush_lex();
277	return;
278	}
279
280	if (!strcmp(db_tok_string, "b"))
281	size = 1;
282	else if (!strcmp(db_tok_string, "h"))
283	size = 2;
284	else if (!strcmp(db_tok_string, "l"))
285	size = 4;
286	else
287	goto bad_modifier;
288	} else {
289	db_unread_token(t);
290	size = 4;
291	}
292
293	if (!db_expression(&addr)) {
294	db_printf("Address missing\n");
295	db_flush_lex();
296	return;
297	}
298
299	if (!db_expression(&value)) {
300	db_printf("Value missing\n");
301	db_flush_lex();
302	return;
303	}
304
305	if (!db_expression(&mask))
306	mask = 0xffffffff;
307
308	t = db_read_token();
309	if (t == tCOMMA) {
310	if (!db_expression(&count)) {
311	db_printf("Count missing\n");
312	db_flush_lex();
313	return;
314	}
315	} else {
316	db_unread_token(t);
317	count = -1; /* effectively forever */
318	}
319	db_skip_to_eol();
320
321	db_search(addr, size, value, mask, count);
322	}
323
324	db_search(addr, size, value, mask, count)
325	register
326	db_addr_t addr;
327	int size;
328	db_expr_t value;
329	db_expr_t mask;
330	unsigned int count;
331	{
332	while (count-- != 0) {
333	db_prev = addr;
334	if ((db_get_value(addr, size, FALSE) & mask) == value)
335	break;
336	addr += size;
337	}
338	db_next = addr;
339	}