334 lines
6.8 KiB
C
334 lines
6.8 KiB
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 <sys/param.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <ddb/ddb.h>
|
|
|
|
#include <ddb/db_lex.h>
|
|
#include <ddb/db_output.h>
|
|
#include <ddb/db_command.h>
|
|
#include <ddb/db_sym.h>
|
|
#include <ddb/db_access.h>
|
|
|
|
static char db_examine_format[TOK_STRING_SIZE] = "x";
|
|
|
|
static void db_examine(db_addr_t, char *, int);
|
|
static void db_search(db_addr_t, int, db_expr_t, db_expr_t, u_int);
|
|
|
|
/*
|
|
* Examine (print) data.
|
|
*/
|
|
/*ARGSUSED*/
|
|
void
|
|
db_examine_cmd(addr, have_addr, count, modif)
|
|
db_expr_t addr;
|
|
boolean_t 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);
|
|
}
|
|
|
|
static void
|
|
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) {
|
|
/* Print the address. */
|
|
db_printsym(addr, DB_STGY_ANY);
|
|
db_printf(":\t");
|
|
db_prev = addr;
|
|
}
|
|
|
|
switch (c) {
|
|
case 'r': /* signed, current radix */
|
|
value = db_get_value(addr, size, TRUE);
|
|
addr += size;
|
|
db_printf("%+-*n", 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("%+-*x", 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.
|
|
*/
|
|
static char db_print_format = 'x';
|
|
|
|
/*ARGSUSED*/
|
|
void
|
|
db_print_cmd(addr, have_addr, count, modif)
|
|
db_expr_t addr;
|
|
boolean_t 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("%+11n", addr);
|
|
break;
|
|
case 'x':
|
|
db_printf("%8x", addr);
|
|
break;
|
|
case 'z':
|
|
db_printf("%+8x", 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");
|
|
}
|
|
|
|
void
|
|
db_print_loc_and_inst(loc)
|
|
db_addr_t loc;
|
|
{
|
|
db_printsym(loc, DB_STGY_PROC);
|
|
db_printf(":\t");
|
|
(void) db_disasm(loc, TRUE);
|
|
}
|
|
|
|
/*
|
|
* Search for a value in memory.
|
|
* Syntax: search [/bhl] addr value [mask] [,count]
|
|
*/
|
|
void
|
|
db_search_cmd(dummy1, dummy2, dummy3, dummy4)
|
|
db_expr_t dummy1;
|
|
boolean_t dummy2;
|
|
db_expr_t dummy3;
|
|
char * dummy4;
|
|
{
|
|
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((db_expr_t *)&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 = 0xffffffffUL;
|
|
|
|
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);
|
|
}
|
|
|
|
static void
|
|
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;
|
|
}
|