svn on armv5 with clang? (Fwd: svn commit: r254539 - head/usr.bin)

[Warner Losh]

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 at 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.

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