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4 Commits

Author SHA1 Message Date
Mike Frysinger
11b0be7c2c [Blackfin] arch: fix atomic and32/xor32 comments and ENDPROC markings 
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
 2008-03-03 17:44:14 -07:00
Robin Getz
9f336a5326 Blackfin arch: ensure that speculative loads of bad pointers don't cause us to do bad things. 
Fix/change formatting of a few more things.

Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
 2007-10-29 18:23:28 +08:00
Mike Frysinger
1f83b8f148 Blackfin arch: cleanup warnings from checkpatch -- no functional changes 
Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
 2007-07-12 22:58:21 +08:00
Bernd Schmidt
7adfb58fbd Blackfin arch: defines and provides entry points for certain user space functions at fixed addresses 
This patch defines (and provides) entry points for certain user space functions
at fixed addresses.  The Blackfin has no usable atomic instructions, but we can
ensure that these code sequences appear atomic from a user space point of view
by detecting when we're in the process of executing them during the interrupt
handler return path.  This allows much more efficient pthread lock
implementations than the bfin_spinlock syscall we're currently using.

Also provided is a small sys_rt_sigreturn stub which can be used by the signal
handler setup code.  The signal.c part will be committed separately.

Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
 2007-06-21 11:34:16 +08:00