From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mohammed Gamal Subject: [PATCH] test: Add emulator test for iret instruction Date: Wed, 28 Jul 2010 02:03:31 +0300 Message-ID: <1280271811-1350-1-git-send-email-m.gamal005@gmail.com> Cc: mtosatti@redhat.com, kvm@vger.kernel.org, Mohammed Gamal To: avi@redhat.com Return-path: Received: from mail-wy0-f174.google.com ([74.125.82.174]:52837 "EHLO mail-wy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751194Ab0G0XD4 (ORCPT ); Tue, 27 Jul 2010 19:03:56 -0400 Received: by wyf19 with SMTP id 19so3613941wyf.19 for ; Tue, 27 Jul 2010 16:03:54 -0700 (PDT) Sender: kvm-owner@vger.kernel.org List-ID: This adds a unit test for real mode emulation of the iret instruction Signed-off-by: Mohammed Gamal --- kvm/test/x86/realmode.c | 23 +++++++++++++++++++++++ 1 files changed, 23 insertions(+), 0 deletions(-) diff --git a/kvm/test/x86/realmode.c b/kvm/test/x86/realmode.c index bd79348..564116a 100644 --- a/kvm/test/x86/realmode.c +++ b/kvm/test/x86/realmode.c @@ -865,6 +865,28 @@ void test_pusha_popa() print_serial("Pusha/Popa Test2: PASS\n"); } +void test_iret() +{ + struct regs inregs = { 0 }, outregs; + + MK_INSN(iret, "pushf\n\t" + "pushl %cs\n\t" + "call 1f\n\t" /* a near call will push eip onto the stack */ + "jmp 2f\n\t" + "1:iret\n\t" + "2:\n\t" + ); + + exec_in_big_real_mode(&inregs, &outregs, + insn_iret, + insn_iret_end - insn_iret); + + if (!regs_equal(&inregs, &outregs, R_AX)) + print_serial("iret Test 1: FAIL\n"); + else + print_serial("iret Test 1: PASS\n"); +} + void realmode_start(void) { test_null(); @@ -886,6 +908,7 @@ void realmode_start(void) /* long jmp test uses call near so test it after testing call */ test_long_jmp(); test_xchg(); + test_iret(); exit(0); } -- 1.7.0.4