From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) by sourceware.org (Postfix) with ESMTP id 141BA393C855 for ; Wed, 30 Sep 2020 09:33:28 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 141BA393C855 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-341-HpgmvCMzNqmKm2icyNOpYQ-1; Wed, 30 Sep 2020 05:33:24 -0400 X-MC-Unique: HpgmvCMzNqmKm2icyNOpYQ-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 800C2801AE2; Wed, 30 Sep 2020 09:33:23 +0000 (UTC) Received: from [10.36.113.204] (ovpn-113-204.ams2.redhat.com [10.36.113.204]) by smtp.corp.redhat.com (Postfix) with ESMTPS id D4CD410021AA; Wed, 30 Sep 2020 09:33:22 +0000 (UTC) To: Fangrui Song Cc: binutils@sourceware.org References: <87pn647h1h.fsf@redhat.com> <20200929165317.2yebvny6gas4jz5f@gmail.com> From: Nick Clifton Autocrypt: addr=nickc@redhat.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <20200929165317.2yebvny6gas4jz5f@gmail.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-6.2 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, NICE_REPLY_A, RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H5, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: binutils@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Binutils mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 30 Sep 2020 09:33:29 -0000 Hi Fangrui, > Is this directive an extension to the existing feature: ? Yes. >   .section .text.foo,"axG",@progbits,group >     .section .rodata.foo,"a?" The idea being that new directive allows the section group to be declared at a later date, after the section has been declared. This is important because two different code generators are involved. GCC is generating the section declarations and annobin is generating the section groups. > If the section group intention of .annobin.text is so that .annobin.text > can be discarded if the associated .text is discarded (--gc-sections), It is. > an alternative is SHF_LINK_ORDER Hmm, interesting. I shall investigate and see if I can adapt annobin to use this method. (Which presumably will work with LLVM's assembler as well as gas). Cheers Nick PS. I see that PR 26253 has not been addressed, sorry about that. I will try to have a look at it later this week.