tree 96dbea09cc618f4e6c4db2a671de215ba6b9784b
parent 8513c42edb3f1c91a8418fae11846c87cf7b8581
author Bernd Schmidt <bernds_cb1@t-online.de> 1210131686 +0800
committer Bryan Wu <cooloney@kernel.org> 1210131686 +0800

[Blackfin] arch: fix gdb testing regression

When transferring to IRQ5 from an exception, save SYSCFG in memory across the
transfer and clear the trace bit.

When we get a single step exception, check whether we can safely clear the
trace bit in SYSCFG.  We can (and should) clear it after the first instruction
of the interrupt handler; the first insn saves SYSCFG to the stack in all
handlers.

Signed-off-by: Bernd Schmidt <bernds_cb1@t-online.de>
Signed-off-by: Bryan Wu <cooloney@kernel.org>