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* add missing a_or_l to atomic.h for non-x86 archsRich Felker2013-08-111-0/+5
| | | | this is needed for recently committed sigaction code
* remove little-endian assumption from arm atomic.hRich Felker2012-07-081-4/+6
| | | | this hidden endian dependency had left big endian arm badly broken.
* initial commit of the arm portRich Felker2011-09-181-0/+112
this port assumes eabi calling conventions, eabi linux syscall convention, and presence of the kernel helpers at 0xffff0f?0 needed for threads support. otherwise it makes very few assumptions, and the code should work even on armv4 without thumb support, as well as on systems with thumb interworking. the bits headers declare this a little endian system, but as far as i can tell the code should work equally well on big endian. some small details are probably broken; so far, testing has been limited to qemu/aboriginal linux.