Re: Once again: test_and_set for CPUs w/o LL/SC

["Maciej W. Rozycki" <macro@ds2.pg.gda.pl>]

On Thu, 17 Oct 2002, Gleb O. Raiko wrote:

> Implement new sysmips then.

 I'm not sure if that's a good idea.  Glibc alone uses test_and_set(),
exchange_and_add(), atomic_add() and compare_and_swap().  Do you want a
separate syscall for each of these functions?  I think the ll/sc emulation
may be the best solution after all.  At least it's most flexible and not
much slower if at all.

-- 
+  Maciej W. Rozycki, Technical University of Gdansk, Poland   +
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+        e-mail: macro@ds2.pg.gda.pl, PGP key available        +