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altos: Be more careful about register save/restore in ao_yield
author
Keith Packard
<keithp@keithp.com>
Sun, 17 Jun 2012 23:14:33 +0000
(16:14 -0700)
committer
Keith Packard
<keithp@keithp.com>
Sun, 17 Jun 2012 23:14:33 +0000
(16:14 -0700)
Make sure the general registers are all saved before messing with any
of them. Then, explicitly use r0 to save/restore apsr and primask.
Signed-off-by: Keith Packard <keithp@keithp.com>
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projects / fw / altos / commitdiff