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[committed] Define HAVE_sync_compare_and_swap* on hppa-linux


The attached change enables future support using the kernel assisted atomic support. It's a bit of a fudge since the libcall routines are not lock free, but everything appears to work.

Tested on hppa-unknown-linux-gnu.  Committed to trunk.

Dave
--
John David Anglin	dave.anglin@bell.net



Attachment: pa-linux.h.d.txt
Description: Text document


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