From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm1-x330.google.com (mail-wm1-x330.google.com [IPv6:2a00:1450:4864:20::330]) by sourceware.org (Postfix) with ESMTPS id 197B93858434 for ; Tue, 2 Apr 2024 09:19:43 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.2 sourceware.org 197B93858434 Authentication-Results: sourceware.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=suse.com ARC-Filter: OpenARC Filter v1.0.0 sourceware.org 197B93858434 Authentication-Results: server2.sourceware.org; arc=none smtp.remote-ip=2a00:1450:4864:20::330 ARC-Seal: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1712049585; cv=none; b=RRqpfdWoQ0t1nPGVOj3mQBXF4jIG0YtXc9RskeUrft38q5sCBAnQHsCV0APVoFa4PsBJqsPKDKqTVQQPMUBApLLZWYmV9XZjmv3KZ8N5rv4wCOB8Yfz4phRcL25p903b9/KtZtvjCd3xz7655mKp0+/N92ePlztwOsUF/qy3SZs= ARC-Message-Signature: i=1; a=rsa-sha256; d=sourceware.org; s=key; t=1712049585; c=relaxed/simple; bh=oU3EJom2a5SMVUp8kzaPOY+FVdnSVy8WDolFtA3ndV8=; h=DKIM-Signature:Message-ID:Date:MIME-Version:Subject:To:From; b=m0HBZ0c47jGgnBra+w0poOuRITYxp24YHQVKifnPZDc3XXsxCkZqUDFIafJ5NI2NwYYD4bYOtu4YkbNvYWe4TwJwdCa27J/NGE//j2QaoMp20zUjT9QfETv21QAMl4hhWxO5tx+Iu9WouRBmkcBeXDV/Fa7fbJzk+mtbp7P6xEs= ARC-Authentication-Results: i=1; server2.sourceware.org Received: by mail-wm1-x330.google.com with SMTP id 5b1f17b1804b1-4156e5c1c7eso4941415e9.1 for ; Tue, 02 Apr 2024 02:19:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1712049582; x=1712654382; darn=sourceware.org; h=content-transfer-encoding:in-reply-to:autocrypt:from:references:cc :to:content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=jJOAyFCER7j5c5wKyJkYYqn3fagRUD5nluzjKY0kahY=; b=SABwVN77GLWtT4Va1AO/aeXixLIg41ki0cDfPwrjXFd78bxhU27+x8ALjwdmnQ8U84 rv3b+z1h0t8iUOKzLXTPmfgytMdBvVS6O/FPYAo546RVAupmBrVm82oaDJ5tMXh0Cmtj TE5l2v5q0jS/P4P0chUPTJY4REFhSWcEBifpWacqytRNjbY00+vrG7U5AmsNsXtJ5oVy aJ+hRVWzs6jJMyaajegt0LCbik6/nAhSf/kkNLJ0Ng3k6p+vEMdwdadBT3S+z6ksh1H5 lU43WDv+D352bqiXYVX17zc/B8cuuvEbG5eTzv1/i9GlI6YQVENH7J83pZl19G0NKCEs wmHg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712049582; x=1712654382; h=content-transfer-encoding:in-reply-to:autocrypt:from:references:cc :to:content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=jJOAyFCER7j5c5wKyJkYYqn3fagRUD5nluzjKY0kahY=; b=MXZhVvDzHprM4Zf8Ij211yVxVYFptD9Y5svPSDclpDVi/rhC6whItNImWgxZ3h5sf2 +p5Ex3yb9+IIMyBqf/DNZdWzu5wRefeTFkfC3p16aN+aFCgV8srXK9MH+tcof1ev7oiF Zbva/ESqIhfmlI0DsyVk2Mxe0TW+cF5DXfyFuFj+bEAwNDGXOqI/RJBM50XcqDGyxILT pOiX3BVd8piabx+x/r98nePc226XVXnFR9nOHm1g4CheVuf4+AnUU2MYCtknTtcRWBW3 +WaTmxNwYZ7mSRAdRVTjwYlYASmqf1qBr2nZiUx/h929njT8CkHN4ndY9g+THek1mzNW y59Q== X-Gm-Message-State: AOJu0YzBdwhLyhp2AxZScAT1hzMoTtVbyxi6qw9hrAPwENiqRb9VMvRi YK/y72ceIZQWtcSXOYSeIKIyC6eBxwdT04X/90sMPExqYOyvCX1UDpjToubPLe6kqUfQSTWsG9k = X-Google-Smtp-Source: AGHT+IHvH7mk99cFmNIH+l9DLvVTmWW8zr9yBWGiRk21G3m0QTPVQkOZYmhhUDQravARsAF8pjawpA== X-Received: by 2002:a05:600c:4f8a:b0:416:1b17:ba4 with SMTP id n10-20020a05600c4f8a00b004161b170ba4mr1194711wmq.16.1712049581870; Tue, 02 Apr 2024 02:19:41 -0700 (PDT) Received: from [10.156.60.236] (ip-037-024-206-209.um08.pools.vodafone-ip.de. [37.24.206.209]) by smtp.gmail.com with ESMTPSA id iv11-20020a05600c548b00b00412e5f32591sm17323058wmb.28.2024.04.02.02.19.41 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 02 Apr 2024 02:19:41 -0700 (PDT) Message-ID: <0f962555-2abe-4233-b448-b22f27320c28@suse.com> Date: Tue, 2 Apr 2024 11:19:46 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: RFC: Objcopy: Section alignment Content-Language: en-US To: Nick Clifton Cc: binutils@sourceware.org References: <875xxf63e7.fsf@redhat.com> <494659da-1a66-48a9-976d-da19ab55a87e@suse.com> <8731b9a2-f68c-4659-b7e2-1980c27ce676@suse.com> <8da57131-e1bd-488d-8e76-7cb94ce925b0@suse.com> <530c7e2e-ca49-4f11-99a7-25298b707a88@redhat.com> From: Jan Beulich Autocrypt: addr=jbeulich@suse.com; keydata= xsDiBFk3nEQRBADAEaSw6zC/EJkiwGPXbWtPxl2xCdSoeepS07jW8UgcHNurfHvUzogEq5xk hu507c3BarVjyWCJOylMNR98Yd8VqD9UfmX0Hb8/BrA+Hl6/DB/eqGptrf4BSRwcZQM32aZK 7Pj2XbGWIUrZrd70x1eAP9QE3P79Y2oLrsCgbZJfEwCgvz9JjGmQqQkRiTVzlZVCJYcyGGsD /0tbFCzD2h20ahe8rC1gbb3K3qk+LpBtvjBu1RY9drYk0NymiGbJWZgab6t1jM7sk2vuf0Py O9Hf9XBmK0uE9IgMaiCpc32XV9oASz6UJebwkX+zF2jG5I1BfnO9g7KlotcA/v5ClMjgo6Gl MDY4HxoSRu3i1cqqSDtVlt+AOVBJBACrZcnHAUSuCXBPy0jOlBhxPqRWv6ND4c9PH1xjQ3NP nxJuMBS8rnNg22uyfAgmBKNLpLgAGVRMZGaGoJObGf72s6TeIqKJo/LtggAS9qAUiuKVnygo 3wjfkS9A3DRO+SpU7JqWdsveeIQyeyEJ/8PTowmSQLakF+3fote9ybzd880fSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPsJgBBMRAgAgBQJZN5xEAhsDBgsJCAcDAgQVAggDBBYC AwECHgECF4AACgkQoDSui/t3IH4J+wCfQ5jHdEjCRHj23O/5ttg9r9OIruwAn3103WUITZee e7Sbg12UgcQ5lv7SzsFNBFk3nEQQCACCuTjCjFOUdi5Nm244F+78kLghRcin/awv+IrTcIWF hUpSs1Y91iQQ7KItirz5uwCPlwejSJDQJLIS+QtJHaXDXeV6NI0Uef1hP20+y8qydDiVkv6l IreXjTb7DvksRgJNvCkWtYnlS3mYvQ9NzS9PhyALWbXnH6sIJd2O9lKS1Mrfq+y0IXCP10eS FFGg+Av3IQeFatkJAyju0PPthyTqxSI4lZYuJVPknzgaeuJv/2NccrPvmeDg6Coe7ZIeQ8Yj t0ARxu2xytAkkLCel1Lz1WLmwLstV30g80nkgZf/wr+/BXJW/oIvRlonUkxv+IbBM3dX2OV8 AmRv1ySWPTP7AAMFB/9PQK/VtlNUJvg8GXj9ootzrteGfVZVVT4XBJkfwBcpC/XcPzldjv+3 HYudvpdNK3lLujXeA5fLOH+Z/G9WBc5pFVSMocI71I8bT8lIAzreg0WvkWg5V2WZsUMlnDL9 mpwIGFhlbM3gfDMs7MPMu8YQRFVdUvtSpaAs8OFfGQ0ia3LGZcjA6Ik2+xcqscEJzNH+qh8V m5jjp28yZgaqTaRbg3M/+MTbMpicpZuqF4rnB0AQD12/3BNWDR6bmh+EkYSMcEIpQmBM51qM EKYTQGybRCjpnKHGOxG0rfFY1085mBDZCH5Kx0cl0HVJuQKC+dV2ZY5AqjcKwAxpE75MLFkr wkkEGBECAAkFAlk3nEQCGwwACgkQoDSui/t3IH7nnwCfcJWUDUFKdCsBH/E5d+0ZnMQi+G0A nAuWpQkjM1ASeQwSHEeAWPgskBQL In-Reply-To: <530c7e2e-ca49-4f11-99a7-25298b707a88@redhat.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-3025.1 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_NONE,TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On 02.04.2024 10:45, Nick Clifton wrote: >>> Plus, as it turns out, I was >>> assuming that calling bfd_set_section_alignment() was enough to set >>> the alignment for a PE section. >> >> Which also shouldn't be necessary? Isn't section alignment relevant for >> COFF objects only? > > I am not sure. But if it is not relevant for PE sections then shouldn't > changing the SectionAlignment field in the PE header generate an error if > any section's VMA does not match that alignment ? Well, this I'm unsure about, largely because of not really knowing any good spec for PE/COFF (which would cover such details). >> And didn't Alan, not so long ago, remove its >> propagation into PE binaries? > > I must admit that I do not remember this, but it certainly could have happened. Commit 6f8f6017a0c4 ("PR27567, Linking PE files adds alignment section flags to executables"), to deal with PR 27567. But indeed ... >> (This then also being a reason why the >> alignment values weren't dumped for PE.) > > I think that we should not hide the alignment values from the user, even if > they are not going to be honoured. We do not dictate the policy for the how > PE binaries are going to be treated by the OS, and there could be good > reasons for why a user needs to know them. ... I was mis-remembering that said change would also have removed the dumping that you now add. In principle I'm okay with such dumping being added; I merely would have been puzzled if it was re-added after having been removed. Jan