From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-4.0 required=3.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_PASS,SPF_PASS shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dcvr.yhbt.net (Postfix) with ESMTPS id ECA2C1F45E for ; Mon, 10 Feb 2020 19:51:15 +0000 (UTC) DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:cc:subject:in-reply-to:date:message-id :mime-version:content-type:content-transfer-encoding; q=dns; s= default; b=SWAPI819XdJUUnukybvHBcSCjp/qmDswuF6ShQXvR3RJFMVQ5NNeY cwGLrnxnvlFVxd1V9AeYLG17kEiEHadtU8l6FPT5FG0TCRjeFhVUfFJOTWUxXbDR zkPpZd2xY1waOblbBU8u1t4lc5iJoFZJAy7T6eBdq6f+O4l+Zqcjs8= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:from:to:cc:subject:in-reply-to:date:message-id :mime-version:content-type:content-transfer-encoding; s=default; bh=p4ibfi4IdChK/qWEAR2aKZkqws4=; b=YxDQa+bqnGIWKqaOHb67rKfq+UPU 7DaH5+HJLqqpJN7p2btz0TRk6OQQ29aitaYM0MlvdSn8v11JBuWuLJ1FPl8E2kT5 3DQB7Mfryd0kNj28Y5hI6jQ3fFCWVtgO4Dyr8MvKSBiu8v7cI2SSTdC+eVUYdlKB 5enpD6Dzqzt5HB0= Received: (qmail 114124 invoked by alias); 10 Feb 2020 19:51:13 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Received: (qmail 114116 invoked by uid 89); 10 Feb 2020 19:51:12 -0000 Authentication-Results: sourceware.org; auth=none X-HELO: us-smtp-1.mimecast.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1581364270; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to; bh=hU8WyoDSIwKmKsB4JoExlYRBmFf2W8gc4cbGiEifCYk=; b=NPNyF4gwt7FFt4UdT8cZrFzOLo0dTjOBJI4bU9OdRZc/JWP9mrW4puaeuqbEvGhEj9xWW0 I4tTaNXyZrJcW3+m9Zjm1lq+fcZYfQmJ/Lot9ms9+8jpP9f92AuG0O4zdx5CCF0CjhBrOI 3G7YigiyMOBKELvDAY9hD5i6+ZQGezs= From: DJ Delorie To: Adhemerval Zanella Cc: libc-alpha@sourceware.org Subject: Re: [PATCH 10/15] riscv: Avoid clobbering register parameters in syscall In-Reply-To: <20200210192038.23588-10-adhemerval.zanella@linaro.org> (message from Adhemerval Zanella on Mon, 10 Feb 2020 16:20:33 -0300) Date: Mon, 10 Feb 2020 14:51:05 -0500 Message-ID: MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Adhemerval Zanella writes: > =09long int _sys_result;=09=09=09=09=09=09\ > +=09long int _arg0 =3D (long int) (arg0);=09=09=09=09\ > =09=09=09=09=09=09=09=09=09\ > =09{=09=09=09=09=09=09=09=09\ > =09register long int __a7 asm ("a7") =3D number;=09=09=09\ > -=09register long int __a0 asm ("a0") =3D (long int) (arg0);=09=09\ > +=09register long int __a0 asm ("a0") =3D _arg0;=09=09=09\ Ok > =09long int _sys_result;=09=09=09=09=09=09\ > +=09long int _arg0 =3D (long int) (arg0);=09=09=09=09\ > +=09long int _arg1 =3D (long int) (arg1);=09=09=09=09\ > =09=09=09=09=09=09=09=09=09\ > =09{=09=09=09=09=09=09=09=09\ > =09register long int __a7 asm ("a7") =3D number;=09=09=09\ > -=09register long int __a0 asm ("a0") =3D (long int) (arg0);=09=09\ > -=09register long int __a1 asm ("a1") =3D (long int) (arg1);=09=09\ > +=09register long int __a0 asm ("a0") =3D _arg0;=09=09=09\ > +=09register long int __a1 asm ("a1") =3D _arg1;=09=09=09\ Ok. > =09long int _sys_result;=09=09=09=09=09=09\ > +=09long int _arg0 =3D (long int) (arg0);=09=09=09=09\ > +=09long int _arg1 =3D (long int) (arg1);=09=09=09=09\ > +=09long int _arg2 =3D (long int) (arg2);=09=09=09=09\ > =09=09=09=09=09=09=09=09=09\ > =09{=09=09=09=09=09=09=09=09\ > =09register long int __a7 asm ("a7") =3D number;=09=09=09\ > -=09register long int __a0 asm ("a0") =3D (long int) (arg0);=09=09\ > -=09register long int __a1 asm ("a1") =3D (long int) (arg1);=09=09\ > -=09register long int __a2 asm ("a2") =3D (long int) (arg2);=09=09\ > +=09register long int __a0 asm ("a0") =3D _arg0;=09=09=09\ > +=09register long int __a1 asm ("a1") =3D _arg1;=09=09=09\ > +=09register long int __a2 asm ("a2") =3D _arg2;=09=09=09\ Ok. > =09long int _sys_result;=09=09=09=09=09=09\ > +=09long int _arg0 =3D (long int) (arg0);=09=09=09=09\ > +=09long int _arg1 =3D (long int) (arg1);=09=09=09=09\ > +=09long int _arg2 =3D (long int) (arg2);=09=09=09=09\ > +=09long int _arg3 =3D (long int) (arg3);=09=09=09=09\ > =09=09=09=09=09=09=09=09=09\ > =09{=09=09=09=09=09=09=09=09\ > =09register long int __a7 asm ("a7") =3D number;=09=09=09\ > -=09register long int __a0 asm ("a0") =3D (long int) (arg0);=09=09\ > -=09register long int __a1 asm ("a1") =3D (long int) (arg1);=09=09\ > -=09register long int __a2 asm ("a2") =3D (long int) (arg2);=09=09\ > -=09register long int __a3 asm ("a3") =3D (long int) (arg3);=09=09\ > +=09register long int __a0 asm ("a0") =3D _arg0;=09=09=09\ > +=09register long int __a1 asm ("a1") =3D _arg1;=09=09=09\ > +=09register long int __a2 asm ("a2") =3D _arg2;=09=09=09\ > +=09register long int __a3 asm ("a3") =3D _arg3;=09=09=09\ Ok. > =09long int _sys_result;=09=09=09=09=09=09\ > +=09long int _arg0 =3D (long int) (arg0);=09=09=09=09\ > +=09long int _arg1 =3D (long int) (arg1);=09=09=09=09\ > +=09long int _arg2 =3D (long int) (arg2);=09=09=09=09\ > +=09long int _arg3 =3D (long int) (arg3);=09=09=09=09\ > +=09long int _arg4 =3D (long int) (arg4);=09=09=09=09\ > =09=09=09=09=09=09=09=09=09\ > =09{=09=09=09=09=09=09=09=09\ > =09register long int __a7 asm ("a7") =3D number;=09=09=09\ > -=09register long int __a0 asm ("a0") =3D (long int) (arg0);=09=09\ > -=09register long int __a1 asm ("a1") =3D (long int) (arg1);=09=09\ > -=09register long int __a2 asm ("a2") =3D (long int) (arg2);=09=09\ > -=09register long int __a3 asm ("a3") =3D (long int) (arg3);=09=09\ > -=09register long int __a4 asm ("a4") =3D (long int) (arg4);=09=09\ > +=09register long int __a0 asm ("a0") =3D _arg0;=09=09=09\ > +=09register long int __a1 asm ("a1") =3D _arg1;=09=09=09\ > +=09register long int __a2 asm ("a2") =3D _arg2;=09=09=09\ > +=09register long int __a3 asm ("a3") =3D _arg3;=09=09=09\ > +=09register long int __a4 asm ("a4") =3D _arg4;=09=09=09\ Ok > ({ =09=09=09=09=09=09=09=09=09\ > =09long int _sys_result;=09=09=09=09=09=09\ > +=09long int _arg0 =3D (long int) (arg0);=09=09=09=09\ > +=09long int _arg1 =3D (long int) (arg1);=09=09=09=09\ > +=09long int _arg2 =3D (long int) (arg2);=09=09=09=09\ > +=09long int _arg3 =3D (long int) (arg3);=09=09=09=09\ > +=09long int _arg4 =3D (long int) (arg4);=09=09=09=09\ > +=09long int _arg5 =3D (long int) (arg5);=09=09=09=09\ > =09=09=09=09=09=09=09=09=09\ > =09{=09=09=09=09=09=09=09=09\ > =09register long int __a7 asm ("a7") =3D number;=09=09=09\ > -=09register long int __a0 asm ("a0") =3D (long int) (arg0);=09=09\ > -=09register long int __a1 asm ("a1") =3D (long int) (arg1);=09=09\ > -=09register long int __a2 asm ("a2") =3D (long int) (arg2);=09=09\ > -=09register long int __a3 asm ("a3") =3D (long int) (arg3);=09=09\ > -=09register long int __a4 asm ("a4") =3D (long int) (arg4);=09=09\ > -=09register long int __a5 asm ("a5") =3D (long int) (arg5);=09=09\ > +=09register long int __a0 asm ("a0") =3D _arg0;=09=09=09\ > +=09register long int __a1 asm ("a1") =3D _arg1;=09=09=09\ > +=09register long int __a2 asm ("a2") =3D _arg2;=09=09=09\ > +=09register long int __a3 asm ("a3") =3D _arg3;=09=09=09\ > +=09register long int __a4 asm ("a4") =3D _arg4;=09=09=09\ > +=09register long int __a5 asm ("a5") =3D _arg5;=09=09=09\ Ok. > =09long int _sys_result;=09=09=09=09=09=09\ > +=09long int _arg0 =3D (long int) (arg0);=09=09=09=09\ > +=09long int _arg1 =3D (long int) (arg1);=09=09=09=09\ > +=09long int _arg2 =3D (long int) (arg2);=09=09=09=09\ > +=09long int _arg3 =3D (long int) (arg3);=09=09=09=09\ > +=09long int _arg4 =3D (long int) (arg4);=09=09=09=09\ > +=09long int _arg5 =3D (long int) (arg5);=09=09=09=09\ > +=09long int _arg6 =3D (long int) (arg6);=09=09=09=09\ > =09=09=09=09=09=09=09=09=09\ > =09{=09=09=09=09=09=09=09=09\ > =09register long int __a7 asm ("a7") =3D number;=09=09=09\ > -=09register long int __a0 asm ("a0") =3D (long int) (arg0);=09=09\ > -=09register long int __a1 asm ("a1") =3D (long int) (arg1);=09=09\ > -=09register long int __a2 asm ("a2") =3D (long int) (arg2);=09=09\ > -=09register long int __a3 asm ("a3") =3D (long int) (arg3);=09=09\ > -=09register long int __a4 asm ("a4") =3D (long int) (arg4);=09=09\ > -=09register long int __a5 asm ("a5") =3D (long int) (arg5);=09=09\ > -=09register long int __a6 asm ("a6") =3D (long int) (arg6);=09=09\ > +=09register long int __a0 asm ("a0") =3D _arg0;=09=09=09\ > +=09register long int __a1 asm ("a1") =3D _arg1;=09=09=09\ > +=09register long int __a2 asm ("a2") =3D _arg2;=09=09=09\ > +=09register long int __a3 asm ("a3") =3D _arg3;=09=09=09\ > +=09register long int __a4 asm ("a4") =3D _arg4;=09=09=09\ > +=09register long int __a5 asm ("a5") =3D _arg5;=09=09=09\ > +=09register long int __a6 asm ("a6") =3D _arg6;=09=09=09\ Ok. Reviewed-by: DJ Delorie