Date: Thu, 14 Sep 2017 17:27:14 +0100 From: Andrew Turner <andrew@fubar.geek.nz> To: John Baldwin <jhb@freebsd.org> Cc: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r323580 - in head/sys/arm: arm include Message-ID: <5678B08C-F4FD-474C-A3F2-8B4C8973FC22@fubar.geek.nz> In-Reply-To: <2385698.hFNfOSpqlD@ralph.baldwin.cx> References: <201709141430.v8EEUieQ045691@repo.freebsd.org> <2385698.hFNfOSpqlD@ralph.baldwin.cx>
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> On 14 Sep 2017, at 15:54, John Baldwin <jhb@freebsd.org> wrote: > > On Thursday, September 14, 2017 02:30:44 PM John Baldwin wrote: >> Author: jhb >> Date: Thu Sep 14 14:30:43 2017 >> New Revision: 323580 >> URL: https://svnweb.freebsd.org/changeset/base/323580 >> >> Log: >> Add AT_HWCAP flags for VFP settings for FreeBSD/arm. >> >> These flags match the meaning and value of flags in Linux, though >> Linux has many more flags. >> >> Reviewed by: stevek, Michal Meloun <meloun-miracle-cz> (earlier version) >> MFC after: 1 month >> Differential Revision: https://reviews.freebsd.org/D12291 > > It would probably be good to add HWCAP_NEON if someone knows the right things > to check to detect it. You’ll need to check the mvfr1 register for it. Linux checks the A_SIMD SPFP, A_SIMD integer, and A_SIMD load/store fields are all 1. Andrew
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