tree 64b2884bb49a86f2895d9206b79bf9f64e384615
parent adba09f01577ea441a761a85aacb1e43b58d35c4
author Chris Zankel <chris@zankel.net> 1180658972 -0700
committer Chris Zankel <chris@zankel.net> 1180658972 -0700

[XTENSA] Remove non-rt signal handling

The non-rt signal handling was never really used, so we don't break
anything. This patch also cleans up the signal stack-frame to make
it independent from the processor configuration. It also improves
the method used for controlling single-stepping. We now save and
restore the 'icountlevel' register that controls single stepping
and set or clear the saved state to enable or disable it.

Signed-off-by: Chris Zankel <chris@zankel.net>