Messages in this thread | | | From | Segher Boessenkool <> | Subject | Re: alpha: half done futex implementation | Date | Tue, 14 Apr 2009 11:40:50 +0200 |
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> Also, there's a bug in the powerpc implementation. It appears that > oparg is clobbered, and if stwcx fails the operation will be > repeated with incorrect inputs.
If either the lwarx or the stwcx. faults, the routine returns -EFAULT and doesn't retry (label "3" is the end of the asm).
If the stwcx. fails because the CPU lost the reservation, %1 isn't clobbered as far as I see?
Segher
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