From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 97697 invoked by alias); 23 Dec 2017 12:44:37 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Received: (qmail 97678 invoked by uid 89); 23 Dec 2017 12:44:37 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.0 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE,SPF_PASS,URIBL_RED autolearn=ham version=3.3.2 spammy= X-HELO: relay1.mentorg.com Date: Sat, 23 Dec 2017 12:44:00 -0000 From: Joseph Myers To: Palmer Dabbelt CC: , Andrew Waterman , Darius Rad , Subject: Re: [PATCH v2 01/15] RISC-V: Build Infastructure In-Reply-To: Message-ID: References: User-Agent: Alpine 2.20 (DEB 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" X-ClientProxiedBy: svr-ies-mbx-01.mgc.mentorg.com (139.181.222.1) To svr-ies-mbx-01.mgc.mentorg.com (139.181.222.1) X-SW-Source: 2017-12/txt/msg00870.txt.bz2 On Fri, 22 Dec 2017, Palmer Dabbelt wrote: > If I understand what's going on correctly here, we support exceptions in the > soft float ABI when built with hardware floating point instructions, but > otherwise we don't (we're always round nearest). I believe that means we need > to set "with_fp_cond=1" when building with hardware floating point (regardless > of ABI), and "with_fp_cond=0" otherwise. > > Does this look sane? Yes, but it needs to go along with having a nofpu sysdeps directory or directories with an Implies file or files pointing to ieee754/soft-fp (make sure that the soft-float configurations do end up with ieee754/soft-fp before other ieee754 directories in their sysdeps directory ordering). > > > +abi-ilp32-options := -D__SIZEOF_INT__=4 > > > > abi-* options variables are no longer used with the current bits/syscall.h > > generation mechanism, so you should remove all settings of such variables > > from the patch. > > OK, we'll remove them for the v3. To be clear, abi-*-condition variables are still needed (used in generating gnu/lib-names.h, for example); it's just abi-*-options that are obsolete. -- Joseph S. Myers joseph@codesourcery.com