tree 04d720df138145f5cb4efd4cf4358c88d44b19d3
parent 16c5becf39a2d174f08b46504f522c2fa50ef462
author Max Filippov <jcmvbkbc@gmail.com> 1372868608 +0400
committer Chris Zankel <chris@zankel.net> 1378486061 -0700

xtensa: keep a3 and excsave1 on entry to exception handlers

Based on the SMP patch by Joe Taylor and subsequent fixes.
Preserve exception table pointer (normally stored in excsave1 SR) as it
cannot be easily restored in SMP environment.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Chris Zankel <chris@zankel.net>