From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1Ncja6-0001Oi-Sn
	for qemu-devel@nongnu.org; Wed, 03 Feb 2010 13:04:02 -0500
Received: from [199.232.76.173] (port=45872 helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1Ncja6-0001OJ-EF
	for qemu-devel@nongnu.org; Wed, 03 Feb 2010 13:04:02 -0500
Received: from Debian-exim by monty-python.gnu.org with spam-scanned (Exim
	4.60) (envelope-from <joumon@gmail.com>) id 1Ncja5-0005zn-L7
	for qemu-devel@nongnu.org; Wed, 03 Feb 2010 13:04:02 -0500
Received: from mail-px0-f189.google.com ([209.85.216.189]:37648)
	by monty-python.gnu.org with esmtp (Exim 4.60)
	(envelope-from <joumon@gmail.com>) id 1Ncja5-0005zf-BC
	for qemu-devel@nongnu.org; Wed, 03 Feb 2010 13:04:01 -0500
Received: by pxi27 with SMTP id 27so1578314pxi.4
	for <qemu-devel@nongnu.org>; Wed, 03 Feb 2010 10:03:59 -0800 (PST)
MIME-Version: 1.0
Date: Wed, 3 Feb 2010 11:03:59 -0700
Message-ID: <2e320c2d1002031003i36bc3848hbb4b030a6dfd4156@mail.gmail.com>
From: Jong Chun Park <joumon@gmail.com>
Content-Type: multipart/alternative; boundary=000e0cd32a90f2d721047eb60abb
Subject: [Qemu-devel] System call from a Guest Linux
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.gnu.org/pipermail/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

--000e0cd32a90f2d721047eb60abb
Content-Type: text/plain; charset=ISO-8859-1

Hi, all?

First of all, I apologize you for this spam. I'm working with QEMU v0.12.1
with i386 Linux guest on x86-64 Linux host. I'm trying to find a point in
the source code where a system call from the guest OS is handled. If I'm not
mistaken, QEMU disassembles an instruction of INT # in a switch statement of
target-i386/translate.c and then calls helper_sysenter of
target-i386/op_helper.c. The problem is how to tell difference between a
system call of the guest OS and a system call of QEMU (I'm not sure of this,
though). Assume the following code is executed after compilation in the
guest OS:

int main() {
  if (access("hello.txt", R_OK)!=0) {

--000e0cd32a90f2d721047eb60abb
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

Hi, all?
<div><br></div><div>First of all, I apologize you for this spam. I&#39;m wo=
rking with QEMU v0.12.1 with i386 Linux guest on x86-64 Linux host. I&#39;m=
 trying to find a point in the source code where a system call from the gue=
st OS is handled. If I&#39;m not mistaken, QEMU disassembles an instruction=
 of INT # in a switch statement of target-i386/translate.c and then calls h=
elper_sysenter of target-i386/op_helper.c. The problem is how to tell diffe=
rence between a system call of the guest OS and a system call of QEMU (I&#3=
9;m not sure of this, though). Assume the following code is executed after =
compilation in the guest OS:</div>
<div><br></div><div>int main() {</div><div>=A0=A0if (access(&quot;hello.txt=
&quot;, R_OK)!=3D0) {</div><div><br></div>

--000e0cd32a90f2d721047eb60abb--