sh: add working futex atomic ops on userspace addresses for smp
authorRich Felker <dalias@libc.org>
Mon, 25 Apr 2016 21:58:03 +0000 (21:58 +0000)
committerRich Felker <dalias@libc.org>
Fri, 5 Aug 2016 03:29:36 +0000 (03:29 +0000)
The version of futex.h in asm-generic should really be adapted to do
the same thing so that this hideous code does not have to be
duplicated per-arch.

Signed-off-by: Rich Felker <dalias@libc.org>

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