From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20620 invoked by alias); 12 Oct 2009 08:35:29 -0000 Received: (qmail 20608 invoked by uid 22791); 12 Oct 2009 08:35:28 -0000 X-SWARE-Spam-Status: No, hits=-1.9 required=5.0 tests=AWL,BAYES_00,SARE_MSGID_LONG40,SPF_PASS X-Spam-Check-By: sourceware.org Received: from mail-qy0-f178.google.com (HELO mail-qy0-f178.google.com) (209.85.221.178) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Mon, 12 Oct 2009 08:35:22 +0000 Received: by qyk8 with SMTP id 8so8119707qyk.24 for ; Mon, 12 Oct 2009 01:35:21 -0700 (PDT) MIME-Version: 1.0 Received: by 10.229.10.153 with SMTP id p25mr2336061qcp.36.1255336521155; Mon, 12 Oct 2009 01:35:21 -0700 (PDT) In-Reply-To: References: <1255314282-23062-1-git-send-email-freephp@gmail.com> From: Jiang Jilin Date: Mon, 12 Oct 2009 08:35:00 -0000 Message-ID: <7d77a27d0910120135p434a98cfp5846ed4f34aa5bcb@mail.gmail.com> Subject: Re: [PATCH] Save CS segment register for ljmp instruction To: Hui Zhu Cc: Michael Snyder , gdb-patches ml Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-IsSubscribed: yes Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org X-SW-Source: 2009-10/txt/msg00229.txt.bz2 On Mon, Oct 12, 2009 at 3:54 PM, Hui Zhu wrote: > Could you post some code to test the ljmp and cs? =A0I am not sure about = cs part. I'm sorry, but I've no idea of writing code to test them. Could someone hel= p me? Thanks! Jiang > Thanks, > Hui > > On Mon, Oct 12, 2009 at 10:24, Jiang Jilin wrote: >> Hi Hui, >> >> I think CS register should be stored for ljmp instruction, but I'm >> not pretty sure, please help me confirm it. >> >> Thanks! >> >> 2009-10-12 =A0Jiang Jilin =A0 >> >> =A0 =A0 =A0 =A0* i386-tdep.c (i386_process_record): Save CS segment regi= ster >> =A0 =A0 =A0 =A0for ljmp instruction >> --- >> =A0gdb/i386-tdep.c | =A0 =A03 +++ >> =A01 files changed, 3 insertions(+), 0 deletions(-) >> >> diff --git a/gdb/i386-tdep.c b/gdb/i386-tdep.c >> index b4dc646..0145008 100644 >> --- a/gdb/i386-tdep.c >> +++ b/gdb/i386-tdep.c >> @@ -3606,8 +3606,11 @@ reswitch: >> =A0 =A0 =A0 =A0 =A0break; >> =A0 =A0 =A0 =A0 =A0/* jmp */ >> =A0 =A0 =A0 =A0case 4: >> + =A0 =A0 =A0 =A0 I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGNU= M); >> + =A0 =A0 =A0 =A0 break; >> =A0 =A0 =A0 =A0 =A0/* ljmp */ >> =A0 =A0 =A0 =A0case 5: >> + =A0 =A0 =A0 =A0 I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_CS_REGNUM); >> =A0 =A0 =A0 =A0 =A0I386_RECORD_ARCH_LIST_ADD_REG (X86_RECORD_EFLAGS_REGN= UM); >> =A0 =A0 =A0 =A0 =A0break; >> =A0 =A0 =A0 =A0 =A0/* push */ >> -- >> 1.5.4.3 >> >> > --=20 Jiang