From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from [140.186.70.92] (port=33022 helo=eggs.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1Q34ey-0007DI-GU
	for qemu-devel@nongnu.org; Fri, 25 Mar 2011 06:54:29 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <azuepke@sysgo.com>) id 1Q34ew-00034S-KT
	for qemu-devel@nongnu.org; Fri, 25 Mar 2011 06:54:27 -0400
Received: from mail.sysgo.com ([195.145.229.155]:49830)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <azuepke@sysgo.com>) id 1Q34ew-000343-Ea
	for qemu-devel@nongnu.org; Fri, 25 Mar 2011 06:54:26 -0400
Received: from lantia.sysgo.com (unknown [172.22.2.7])
	by mail.sysgo.com (Postfix) with ESMTP id CE0DD14308
	for <qemu-devel@nongnu.org>; Fri, 25 Mar 2011 11:54:23 +0100 (CET)
Received: from [172.22.40.10] (azu.sysgo.com [172.22.40.10])
	by lantia.sysgo.com (Postfix) with ESMTP id B396F5A281
	for <qemu-devel@nongnu.org>; Fri, 25 Mar 2011 11:54:23 +0100 (CET)
Message-ID: <4D8C745F.2000304@sysgo.com>
Date: Fri, 25 Mar 2011 11:54:23 +0100
From: Alex Zuepke <azuepke@sysgo.com>
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="------------090103010503020504010209"
Subject: [Qemu-devel] ARM: BKPT instructions should raise prefetch aborts
 with IFSR type 00010
List-Id: qemu-devel.nongnu.org
List-Unsubscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <http://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: qemu-devel@nongnu.org

This is a multi-part message in MIME format.
--------------090103010503020504010209
Content-Type: text/plain; charset=ISO-8859-15
Content-Transfer-Encoding: 7bit

Hi,

while digging through some problems with BKPT exceptions on ARM, I
discovered that QEMU does not update IFSR on prefetch aborts. This
should be done since ARMv6 according to ARM docs. Please include.

Best Regards,
Alex

-- 
Alexander Zuepke                                azuepke@sysgo.com
SYSGO AG ~ Am Pfaffenstein 14 ~ 55270 Klein-Winternheim ~ Germany

--------------090103010503020504010209
Content-Type: text/x-diff;
 name="qemu_arm_bkpt_ifsr_update.patch"
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
 filename="qemu_arm_bkpt_ifsr_update.patch"

 target-arm: BKPT instructions should raise prefetch aborts with IFSR type 00010
 diff against qemu 0.14.0
 Signed-off-by: Alex Zuepke <azuepke@sysgo.com>
--- qemu-0.14.0.orig/target-arm/translate.c	2011-02-16 15:44:05.000000000 +0100
+++ qemu-0.14.0/target-arm/translate.c	2011-03-25 11:22:03.000000000 +0100
@@ -6389,6 +6389,7 @@
                 goto illegal_op;
             }
             /* bkpt */
+            env->cp15.c5_insn = 2;
             gen_exception_insn(s, 4, EXCP_BKPT);
             break;
         case 0x8: /* signed multiply */
@@ -8930,6 +8931,7 @@
             break;
 
         case 0xe: /* bkpt */
+            env->cp15.c5_insn = 2;
             gen_exception_insn(s, 2, EXCP_BKPT);
             break;
 

--------------090103010503020504010209--