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* match glibc/lsb cancellation abi on i386Rich Felker2011-03-252-0/+24
| | | | | | | | glibc made the ridiculous choice to use pass-by-register calling convention for these functions, which is impossible to duplicate directly on non-gcc compilers. instead, we use ugly asm to wrap and convert the calling convention. presumably this works with every compiler anyone could potentially want to use.
* race condition fix: block all signals before decrementing thread countRich Felker2011-02-191-9/+0
| | | | | | | | | | | | the existence of a (kernelspace) thread must never have observable effects after the thread count is decremented. if signals are not blocked, it could end up handling the signal for rsyscall and contributing towards the count of threads which have changed ids, causing a thread to be missed. this could lead to one thread retaining unwanted privilege level. this change may also address other subtle race conditions in application code that uses signals.
* finish unifying thread register handling in preparation for portingRich Felker2011-02-151-0/+22
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* begin unifying clone/thread management interface in preparation for portingRich Felker2011-02-151-25/+17
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* initial check-in, version 0.5.0 v0.5.0Rich Felker2011-02-122-0/+57