Date: Tue, 17 Sep 2013 22:59:18 +0100 From: Andrew Turner <andrew@fubar.geek.nz> 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: <20130917225918.7a4728b1@bender.Home> 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 Tue, 17 Sep 2013 12:24:45 -0600 Ian Lepore <ian@FreeBSD.org> 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: > > > > > Hi, > > > > > > I am reading up on commits and found this one. Is ARMv5 capable > > > of building the in-tree svn also? > > > > > 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. > > > > 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. That is because there are no plans to drop armv4/5 support, however I am also unaware of any plans to implement the required functions that clang provides on armv6. The only support I am planning on dropping is for armv6eb[1] as it is unused, and almost certainly broken. None of our kernels can boot on ARMv6/7, and the little-endian kernels don't have the required magic to be able to switch endian when required. Andrew [1] http://people.freebsd.org/~andrew/rm_armv6eb.diff
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