From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-patches-return-129003-listarch-gdb-patches=sources.redhat.com@sourceware.org>
Received: (qmail 29203 invoked by alias); 25 Jan 2016 14:34:47 -0000
Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <gdb-patches.sourceware.org>
List-Subscribe: <mailto:gdb-patches-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb-patches/>
List-Post: <mailto:gdb-patches@sourceware.org>
List-Help: <mailto:gdb-patches-help@sourceware.org>, <http://sourceware.org/ml/#faqs>
Sender: gdb-patches-owner@sourceware.org
Received: (qmail 29180 invoked by uid 89); 25 Jan 2016 14:34:46 -0000
Authentication-Results: sourceware.org; auth=none
X-Virus-Found: No
X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_PASS autolearn=ham version=3.3.2 spammy=auxv
X-HELO: usplmg21.ericsson.net
Received: from usplmg21.ericsson.net (HELO usplmg21.ericsson.net) (198.24.6.65) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-SHA encrypted) ESMTPS; Mon, 25 Jan 2016 14:34:46 +0000
Received: from EUSAAHC006.ericsson.se (Unknown_Domain [147.117.188.90])	by usplmg21.ericsson.net (Symantec Mail Security) with SMTP id 16.5A.32102.27236A65; Mon, 25 Jan 2016 15:34:26 +0100 (CET)
Received: from [142.133.110.95] (147.117.188.8) by smtp-am.internal.ericsson.com (147.117.188.92) with Microsoft SMTP Server id 14.3.248.2; Mon, 25 Jan 2016 09:34:43 -0500
Subject: Re: [PATCH 6/8] gdbserver/s390: Add fast tracepoint support.
To: <gdb-patches@sourceware.org>, =?UTF-8?Q?Marcin_Ko=c5=9bcielnicki?=	<koriakin@0x04.net>
References: <1453637529-26972-1-git-send-email-koriakin@0x04.net> <1453637529-26972-7-git-send-email-koriakin@0x04.net>
From: Antoine Tremblay <antoine.tremblay@ericsson.com>
Message-ID: <56A63283.9000404@ericsson.com>
Date: Mon, 25 Jan 2016 14:34:00 -0000
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0
MIME-Version: 1.0
In-Reply-To: <1453637529-26972-7-git-send-email-koriakin@0x04.net>
Content-Type: text/plain; charset="utf-8"; format=flowed
Content-Transfer-Encoding: quoted-printable
X-IsSubscribed: yes
X-SW-Source: 2016-01/txt/msg00624.txt.bz2



On 01/24/2016 07:12 AM, Marcin Ko=C5=9Bcielnicki wrote:

> +void
> +initialize_low_tracepoint (void)
> +{
> +  unsigned long hwcap =3D getauxval (AT_HWCAP);

You might consider also using proc if getauxval is not available ?

unsigned long hwcap =3D 0;

#ifdef HAVE_GETAUXVAL
   hwcap =3D getauxval (AT_HWCAP);
#else
   unsigned long data[2];
   FILE *f =3D fopen ("/proc/self/auxv", "r");

   if (f =3D=3D NULL)
     return;

   while (fread (data, sizeof (data), 1, f) > 0)
     {
      if (data[0] =3D=3D AT_HWCAP)
        {
          hwcap =3D data[1];
          break;
        }
     }

   fclose (f);


Regards,
Antoine