From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-1.mimecast.com (us-smtp-1.mimecast.com [207.211.31.81]) by sourceware.org (Postfix) with ESMTP id AE3B93857C64 for ; Sat, 29 Aug 2020 15:45:14 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org AE3B93857C64 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-413-nnBRnSorNteFezGPcIkbOA-1; Sat, 29 Aug 2020 11:45:10 -0400 X-MC-Unique: nnBRnSorNteFezGPcIkbOA-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 07A548015A5; Sat, 29 Aug 2020 15:45:10 +0000 (UTC) Received: from zarquon.pink (unknown [10.33.36.19]) by smtp.corp.redhat.com (Postfix) with ESMTP id 3E4675D9DD; Sat, 29 Aug 2020 15:45:09 +0000 (UTC) Subject: Re: aarch64 inline asm / -fPIC problem To: Joe Buehler , gcc-help@gcc.gnu.org References: <5F48246C.6040402@cox.net> From: Andrew Haley Autocrypt: addr=aph@redhat.com; prefer-encrypt=mutual; keydata= mQENBEoRZWsBCACUiFkb5YgfOfTHmzkESkfmTri14VX9UKdv4TUu9l9S6gFKf56ihWChiG8H pQ6CDTb5uqtZCWBNXoqcC2uCR0SCnWGk46tAW9dO0roEjoP+6AgbY4V5xUZt963XONYu1gnN EDQPB1QKN5L3PCMn0Dwnl1F6Of5BMPc+ErXr2BuMAG5Rb9QJPuWEjP4rMJdQIxeVkSk7oTnm rQJnDPF3WPimgwtaDGC17lZLwt4U9az9PobZxFH8lphexrwGdZX8qxQZEs9qfpW/wY/KFbRf bzSGNJlFd3X1liTofZQpNv+hloOS0/C1xLOQea4nCWlRZHiVpLywrmk0e1aFjqPNVN7NABEB AAG0HUFuZHJldyBIYWxleSA8YXBoQHJlZGhhdC5jb20+iQE3BBMBCAAhBQJKEWYCAhsDBQsJ CAcDBRUKCQgLBRYCAwEAAh4BAheAAAoJEKXNYDUzL6ZxTh8H/0gYx++/zE2Fhqr9Xc7rwN5f YF1bS8wnvOVNNS+IVoycRR7FMLFXEnokCoAw7ccG0M3hOrQDa3tojn9NpBEZ1xA45gIfTWcP kx8nfgTHK8T1Eu7DRDDZOiSKmq5Y2mozbgarL+AIe/6dppbRyKz3a/jNKzhj060HGKDpJ/65 TgTGtTsefW6I4/oyfhXX2ODWHdKBuGO0hTIfu+ofS3oRZnpq+fImA1s9ZAHLbGQ4iAxXsiM7 +aueKLU9a8smQvjWZSzDEEyEe9z4uZrL2LV9y+O69GpCIsQRIYNtNwTEyEEInT6EQT4evR6q WJTtzdcfA8161gnmlxEOPdMUA0PC9xy5AQ0EShFlmwEIAJ7tS9BC28YJNpKVvxL49WFgTKbU angZnBnnkKVbDMw06DbLQVFu4mEhVfvvtukXIPEg41v+M2j9xM4KDeqUbubOSvQtvUef5cKU 04j4vWir5u2vgPbHOWZWbKzaZk1ve5Jf1fnkuAsk3rXd/jAendfTGXMppWGQreEQ4OGrP+LP 4xO9ZhjOW8+/YmzlA2MhuoW+hsUkboxOqqq0wwXIIQf8aoPv3GrCMZ+NHbc4JM7zhlCDboyQ /XRttUz36TqwPkE66iEREeXZ1f+iWutSP/+UvkrErZbCEKVz2FhmVAGf3OOvbnv6NyXPDEKx yyHKJ+aoJsX/t7G2IvcieRERxVcAEQEAAYkBHwQYAQgACQUCShFlmwIbDAAKCRClzWA1My+m cWNBCACUgT/XjBKTYwFkvf8AmV3d8FTz2aBwbNGZTEQ+ClZLD9UbLuffGfXlvi7qRJviDOSM 3vd4df7J+yZs08oNYCkbXlqhPbA7giKVQ4I6CfCbYEL9U454gr4gIQ3IMgKQlxYaxAD6EwQk JzMUSAu0kLTjX6e35FHdWmf2VHR6NbyuV5O/yzf/3iNallmocZIK5I0zY5ndbptd4vEWX4Kd R6d5D1AZrsnlLoFkIPR0WZfzfPtwiW6WVm6upSOQXEEA4YH3sNEFyywihqbp88Fx7BRKRtIS 27/FmbZjZ70N1rA99ld8cGmMha+ylFs4gBmDIpvKFLxlCiZFH7qEnyv4b73q Message-ID: <8dff32c6-4e2c-2a1a-4216-98951f52b552@redhat.com> Date: Sat, 29 Aug 2020 16:45:08 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <5F48246C.6040402@cox.net> X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US X-Spam-Status: No, score=-6.7 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_H3, 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: gcc-help@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc-help mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 29 Aug 2020 15:45:16 -0000 On 27/08/2020 22:23, Joe Buehler via Gcc-help wrote: temp.c: In function main : temp.c:4:2: warning: asm operand 0 probably doesn t match constraints __asm__ volatile(".8byte %0\n\t" : : "i" ("message %s\n")); ^~~~~~~ temp.c:4:2: error: impossible constraint in asm I'd use the "S" constraint. > I am unable to code something similar manually using inline asm because > the string is a format string containing % characters, which inline asm > will of course try to interpret. (Does gcc provide anything to escape % > chars in a literal string?) "%%" -- Andrew Haley (he/him) Java Platform Lead Engineer Red Hat UK Ltd. https://keybase.io/andrewhaley EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671