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* remove more unnecessary operand-size suffixes from x86_64 atomic.hRich Felker2014-01-151-3/+3
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* remove gratuitous temp vars, casts, and suffixes in x86_64 atomic.hRich Felker2014-01-111-13/+11
| | | | | aside from general cleanup, this should allow the identical atomic.h file to be used for the upcoming x32 port.
* security hardening: ensure suid programs have valid stdin/out/errRich Felker2011-08-231-0/+5
| | | | | | | | | | | this behavior (opening fds 0-2 for a suid program) is explicitly allowed (but not required) by POSIX to protect badly-written suid programs from clobbering files they later open. this commit does add some cost in startup code, but the availability of auxv and the security flag will be useful elsewhere in the future. in particular auxv is needed for static-linked vdso support, which is still waiting to be committed (sorry nik!)
* add word-sized ctz function to atomic.hRich Felker2011-04-271-2/+8
| | | | | | strictly speaking this and a few other ops should be factored into asm.h or the file should just be renamed to asm.h, but whatever. clean it up someday.
* optimize contended normal mutex case; add int compare-and-swap atomicRich Felker2011-03-171-0/+7
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* Optimize x86_64 atomics to take advantage of 64-bitness.Nicholas J. Kain2011-02-151-9/+8
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* Port musl to x86-64. One giant commit!Nicholas J. Kain2011-02-151-0/+110