Date: Tue, 17 Sep 2013 13:38:40 -0600 From: Warner Losh <imp@bsdimp.com> To: Ian Lepore <ian@FreeBSD.org> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@FreeBSD.org>, Ronald Klop <ronald-freebsd8@klop.yi.org> Subject: Re: svn on armv5 with clang? (Fwd: svn commit: r254539 - head/usr.bin) Message-ID: <D78668AB-5366-4CC8-8679-EA29C3DC16F0@bsdimp.com> In-Reply-To: <1379442285.1197.49.camel@revolution.hippie.lan> References: <201308191744.r7JHiJ00063824@svn.freebsd.org> <op.w3j64kz18527sy@212-182-167-131.ip.telfort.nl> <20130917190215.7093f261@bender.Home> <1379442285.1197.49.camel@revolution.hippie.lan>
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On Sep 17, 2013, at 12:24 PM, Ian Lepore wrote: > On Tue, 2013-09-17 at 19:02 +0100, Andrew Turner wrote: >> On Tue, 17 Sep 2013 16:13:22 +0200 >> "Ronald Klop" <ronald-freebsd8@klop.yi.org> wrote: >>=20 >>> Hi, >>>=20 >>> I am reading up on commits and found this one. Is ARMv5 capable of =20= >>> building the in-tree svn also? >>>=20 >> It is unlikely, I don't think we provide the required atomic = functions >> for ARMv5. On armv6 clang provides them, however I don't thing it = knows >> how to set up ARM_RAS_START. Without this we have to implement more = of >> the __sync_* functions for svn to work on ARMv5. I don't know of any >> plans to add them. >>=20 >=20 > I don't remember ever hearing about plans to *drop* support for armv4 > and v5, but with responses like that, that seems to be what's = underway. There were *NO* such plans, and if there are it is taking me by = surprise. ARM_RAS_START is critical to support armv4/5. I thought it was a = #define... no? Warner
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