NetBSD/sys/ddb/db_write_cmd.c

102 lines
2.4 KiB
C

/* $NetBSD: db_write_cmd.c,v 1.13 2000/05/25 19:57:36 jhawk Exp $ */
/*
* 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 "AS IS"
* 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.
*
* Author: David B. Golub, Carnegie Mellon University
* Date: 7/90
*/
#include <sys/param.h>
#include <sys/proc.h>
#include <machine/db_machdep.h>
#include <ddb/db_lex.h>
#include <ddb/db_access.h>
#include <ddb/db_command.h>
#include <ddb/db_sym.h>
#include <ddb/db_extern.h>
#include <ddb/db_output.h>
/*
* Write to file.
*/
/*ARGSUSED*/
void
db_write_cmd(address, have_addr, count, modif)
db_expr_t address;
boolean_t have_addr;
db_expr_t count;
char * modif;
{
db_addr_t addr;
db_expr_t old_value;
db_expr_t new_value;
int size;
boolean_t wrote_one = FALSE;
addr = (db_addr_t) address;
switch (modif[0]) {
case 'b':
size = 1;
break;
case 'h':
size = 2;
break;
case 'l':
case '\0':
size = 4;
break;
default:
size = -1;
db_error("Unknown size\n");
/*NOTREACHED*/
}
while (db_expression(&new_value)) {
old_value = db_get_value(addr, size, FALSE);
db_printsym(addr, DB_STGY_ANY, db_printf);
db_printf("\t\t%#*ln = %#*ln\n", (int)(sizeof (old_value) * 2) + 2,
old_value, (int)(sizeof (new_value) * 2) + 2, new_value);
db_put_value(addr, size, new_value);
addr += size;
wrote_one = TRUE;
}
if (!wrote_one) {
db_error("Nothing written.\n");
/*NOTREACHED*/
}
db_next = addr;
db_prev = addr - size;
db_skip_to_eol();
}