From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-return-47277-listarch-gdb=sources.redhat.com@sourceware.org>
Received: (qmail 74720 invoked by alias); 2 Nov 2019 01:30:25 -0000
Mailing-List: contact gdb-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Id: <gdb.sourceware.org>
List-Subscribe: <mailto:gdb-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb/>
List-Post: <mailto:gdb@sourceware.org>
List-Help: <mailto:gdb-help@sourceware.org>, <http://sourceware.org/ml/#faqs>
Sender: gdb-owner@sourceware.org
Received: (qmail 74609 invoked by uid 89); 2 Nov 2019 01:30:17 -0000
Authentication-Results: sourceware.org; auth=none
X-Spam-SWARE-Status: No, score=0.3 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE,SPF_PASS autolearn=ham version=3.3.1 spammy=H*f:sk:5c9d0ab, H*f:BN65183dGkF, H*f:sk:iHx3kog, H*f:sk:0d7d8ed
X-HELO: mail-qt1-f181.google.com
Received: from mail-qt1-f181.google.com (HELO mail-qt1-f181.google.com) (209.85.160.181) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Sat, 02 Nov 2019 01:30:15 +0000
Received: by mail-qt1-f181.google.com with SMTP id y39so15487839qty.0        for <gdb@sourceware.org>; Fri, 01 Nov 2019 18:30:10 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;        d=linaro.org; s=google;        h=subject:to:cc:references:from:message-id:date:user-agent         :mime-version:in-reply-to:content-language:content-transfer-encoding;        bh=+Fhbx3vLHhqO8VPptiOlxu1BpUbJRsdsWCM/ZH4pajc=;        b=dzrQO2AaENAV/OfJGUK4CNh2Gu4oefDUTpe6DO7nkhkKOp8JwuEj/h6pLK7j7rCwib         dC7fIewRpXjIj0GiRxq//a4+MXXwMKjgNF/Yn6s7sH/0VbJGWiPHHz72qFVuNxjVoHuc         Op7uNCJ3DtLVnSCQpUjh5M4w+FxgTlDhmYnbgrwC6oOOdHnLLujnv6GyCMM1NbZAZChX         DVIHQGKVuiAVXaRzxDHzLd6r33XA6u3hHog9GIOEm0bCAmHL0rLfcdkfSMyvpYFnLeNd         u2AaQsQ+itimOCutUEl3s4jw7mpc2APVOVV/R+sUXkDAEfnEi649DBxPhAeLJCUl6JXh         W/Ug==
Return-Path: <luis.machado@linaro.org>
Received: from [192.168.15.21] (201-43-10-147.dsl.telesp.net.br. [201.43.10.147])        by smtp.gmail.com with ESMTPSA id 187sm5842869qkk.103.2019.11.01.18.30.06        (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);        Fri, 01 Nov 2019 18:30:07 -0700 (PDT)
Subject: Re: gdb 8.3.1 truncated register in remote g packet
To: Reinoud Koornstra <reinoudkoornstra@gmail.com>
Cc: gdb@sourceware.org
References: <CAAA5faFwCD9xVgJFFpdc8WXaDWVPpQ6_O7gFchVHp6-a9k0bsA@mail.gmail.com> <5c9d0ab7-4e03-ea43-ae54-5d2aed0728e0@linaro.org> <CAAA5faG0cpQnXKoywzLGHog-1=BN65183dGkF+-iHx3kogO96w@mail.gmail.com> <0d7d8ede-1cae-c0cc-be35-05443dc5f073@linaro.org> <CAAA5faHCuy75Ufpuuu-7LCuk-Q25riRmfFanWAm6Y67Fw1Lu8g@mail.gmail.com> <CAAA5faH6L30J9VGLdnjqvWbtsp4HpB1woQc0knFjh5f1k0USAg@mail.gmail.com>
From: Luis Machado <luis.machado@linaro.org>
Message-ID: <1b1ebf11-3e2c-d5b3-6a5b-50ed54e791bc@linaro.org>
Date: Sat, 02 Nov 2019 01:30:00 -0000
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0
MIME-Version: 1.0
In-Reply-To: <CAAA5faH6L30J9VGLdnjqvWbtsp4HpB1woQc0knFjh5f1k0USAg@mail.gmail.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 7bit
X-IsSubscribed: yes
X-SW-Source: 2019-11/txt/msg00005.txt.bz2

Hi,

On 11/1/19 6:05 PM, Reinoud Koornstra wrote:
> Hi Luis,
> The remote platform is arm32. Weirdly enough, when I use a gdb 7.7 
> compiled only for x86_64, it does seem to work a bit better, no clue 
> exactly why.

I'm not sure why an arm-targeted gdb would not complain about loading a 
x86-target vmlinux image. That sounds off.

You could try with an older arm gdb to see if it works fine. If it does 
and the latest version doesn't, then we may need to investigate it.

I checked the code and the truncation message is a result of the 
debugging stub sending less bytes than GDB expects for the register set.

Just to confirm, does your arm target have floating point registers?