From c10c20ac280cb802fbe3673cd51b61aecd8bc500 Mon Sep 17 00:00:00 2001
From: scw <scw@NetBSD.org>
Date: Thu, 19 Dec 2002 13:45:03 +0000
Subject: [PATCH] Add a range check for the DCR address in db_ppc4xx_dcr().

---
 sys/arch/powerpc/powerpc/db_interface.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sys/arch/powerpc/powerpc/db_interface.c b/sys/arch/powerpc/powerpc/db_interface.c
index 7910624da7f9..573e0781367a 100644
--- a/sys/arch/powerpc/powerpc/db_interface.c
+++ b/sys/arch/powerpc/powerpc/db_interface.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: db_interface.c,v 1.22 2002/12/19 13:29:53 scw Exp $ */
+/*	$NetBSD: db_interface.c,v 1.23 2002/12/19 13:45:03 scw Exp $ */
 /*	$OpenBSD: db_interface.c,v 1.2 1996/12/28 06:21:50 rahnds Exp $	*/
 
 #define USERACC
@@ -339,6 +339,9 @@ db_ppc4xx_dcr(db_expr_t address, int have_addr, db_expr_t count, char *modif)
 	db_expr_t new_value;
 	db_expr_t addr;
 
+	if (address < 0 || address > 0x3ff)
+		db_error("Invalid DCR address (Valid range is 0x0 - 0x3ff)\n");
+
 	addr = address;
 
 	while (db_expression(&new_value)) {