[Buildroot] [PATCH v2] toolchain: Enable Glibc for all little-endian ARCs with atomic ops
thomas.petazzoni at bootlin.com
Fri Nov 9 21:03:25 UTC 2018
On Fri, 9 Nov 2018 23:09:49 +0300, Alexey Brodkin wrote:
> Initially we had a port only for ARCv2 cores but
> then with a simple change ARCompact cores got supported as well.
> So we generalize from BR2_archs to BR2_arcle as we haven't tried
> to get glibc working on big-endian ARCs yet.
> Also we never bothered to check avaialbility of atomic
> instructions in the core but in case of Glibc for ARC this is
> really a must, so we add this check here.
> Note in case of uClibc we may have system w/o HW atomics but:
> 1. Only single-core systems are allowed
> 2. Atomic instructions are emulated via arc_usr_cmpxchg syscall
> Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com>
> Cc: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
> Cc: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
> Cc: Peter Korsgaard <peter at korsgaard.com>
Applied to master, thanks.
Thomas Petazzoni, CTO, Bootlin
Embedded Linux and Kernel engineering
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