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File: [cvs.NetBSD.org] / src / sys / ddb / db_write_cmd.c (download)

Revision 1.14, Tue Jun 6 05:06:26 2000 UTC (20 years, 4 months ago) by jhawk
Branch: MAIN
CVS Tags: thorpej_scsipi_nbase, thorpej_scsipi_beforemerge, thorpej_scsipi_base, thorpej-mips-cache-base, thorpej-mips-cache, thorpej-devvp-base3, thorpej-devvp-base2, thorpej-devvp-base, thorpej-devvp, pre-chs-ubcperf, post-chs-ubcperf, netbsd-1-5-base, netbsd-1-5-RELEASE, netbsd-1-5-PATCH003, netbsd-1-5-PATCH002, netbsd-1-5-PATCH001, netbsd-1-5-BETA2, netbsd-1-5-BETA, netbsd-1-5-ALPHA2, netbsd-1-5
Branch point for: nathanw_sa, kqueue
Changes since 1.13: +3 -3 lines

Stop using DDB-specific "%n" kprintf() format specifier. This was
important as db_sym() can be called through printf() rather than
db_printf(), causing a trap as the standard %n usage is invoked.

The DDB-specific %n code should disappear from subr_prf.c soon...

/*	$NetBSD: db_write_cmd.c,v 1.14 2000/06/06 05:06:26 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%s = ", db_num_to_str(old_value));
	    db_printf("%s\n", db_num_to_str(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();
}