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/* $OpenBSD: db_write_cmd.c,v 1.12 2014/07/08 13:02:57 deraadt Exp $ */
/* $NetBSD: db_write_cmd.c,v 1.6 1996/02/05 01:57:25 christos Exp $ */
/*
* Mach Operating System
* Copyright (c) 1993,1992,1991,1990 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 Mellon
* the rights to redistribute these changes.
*
* Author: David B. Golub, Carnegie Mellon University
* Date: 7/90
*/
#include <sys/param.h>
#include <sys/systm.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(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;
char tmpfmt[28];
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;
#ifdef __LP64__
case 'q':
size = 8;
break;
#endif
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%s\t", db_format(tmpfmt, sizeof tmpfmt,
old_value, DB_FORMAT_N, 0, 8));
db_printf("=\t%s\n", db_format(tmpfmt, sizeof tmpfmt,
new_value, DB_FORMAT_N, 0, 8));
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();
}
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