From patchwork Tue Jan 11 10:05:08 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Florian Weimer X-Patchwork-Id: 49828 Return-Path: X-Original-To: patchwork@sourceware.org Delivered-To: patchwork@sourceware.org Received: from server2.sourceware.org (localhost [IPv6:::1]) by sourceware.org (Postfix) with ESMTP id 677E238A140F for ; Tue, 11 Jan 2022 10:06:17 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 677E238A140F DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1641895577; bh=EtnG7PTncHVESbo7wFB4gNjA4dIlfgIPyiIkWD79z2k=; h=To:Subject:Date:List-Id:List-Unsubscribe:List-Archive:List-Post: List-Help:List-Subscribe:From:Reply-To:Cc:From; b=ZBJHe5vvMYGSe9Vn8pPfCks6vT/819WnMSvdOLDw+HGJc7wZi+Tjhnv/k09z3Sagg kP5LhnC76Grxj1g5klXfDGN97hDtPAH+gLPjNwPrRXhzw5xwoot6ovBBZo9yj+DiDJ 2w9gh4FAcquKhvC8LclcW/1ozd/am1Bc1PYT7+dA= X-Original-To: libc-alpha@sourceware.org Delivered-To: libc-alpha@sourceware.org Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by sourceware.org (Postfix) with ESMTPS id 49748389FC0A for ; Tue, 11 Jan 2022 10:05:24 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 49748389FC0A Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-327-t0Qq2_ogOF2sG0AKuFoBGA-1; Tue, 11 Jan 2022 05:05:14 -0500 X-MC-Unique: t0Qq2_ogOF2sG0AKuFoBGA-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 7E628104; Tue, 11 Jan 2022 10:05:13 +0000 (UTC) Received: from oldenburg.str.redhat.com (unknown [10.39.192.102]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 985BE70D23; Tue, 11 Jan 2022 10:05:10 +0000 (UTC) To: libc-alpha@sourceware.org Subject: [PATCH 0/2] Remove some i386 system call optimizations X-From-Line: 10618fa43399978f066fb375fdf9732d333da925 Mon Sep 17 00:00:00 2001 Message-Id: Date: Tue, 11 Jan 2022 11:05:08 +0100 User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-Spam-Status: No, score=-6.4 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Patchwork-Original-From: Florian Weimer via Libc-alpha From: Florian Weimer Reply-To: Florian Weimer Cc: Jakub Jelinek Errors-To: libc-alpha-bounces+patchwork=sourceware.org@sourceware.org Sender: "Libc-alpha" The configure check for CAN_USE_REGISTER_ASM_EBP is unreliable. And we used it to switch away from using %ebx in assembler constraints, but this appears to be no longer necessary. Tested on i686-linux-gnu. Built with build-many-glibcs.py. Thanks, Florian Florian Weimer (2): i386: Always treat %ebx as an allocatable register i386: Always use __libc_do_syscall for 6-argument syscalls (bug 27997) config.h.in | 4 - sysdeps/unix/sysv/linux/i386/configure | 39 ---- sysdeps/unix/sysv/linux/i386/configure.ac | 17 -- sysdeps/unix/sysv/linux/i386/sysdep.h | 222 +++------------------- 4 files changed, 27 insertions(+), 255 deletions(-) base-commit: e72ef23ee88187284b4b1ca9b2e314e618429d35