tree aeee6ced6a02ba6d2f266cdaf102d9b7db4758d7
parent d1d22c7dbecb56454195cafec1c377389a5063f6
author Ovidiu Panait <ovidiu.panait@windriver.com> 1644739762 +0200
committer Michal Simek <michal.simek@xilinx.com> 1644927103 +0100

microblaze: exception: fix return address for delay slot exceptions

According to the MicroBlaze reference manual (xilinx2021.2/ug984/page-37):
"""
If an exception is caused by an instruction in a delay slot (that is,
ESR[DS]=1), the exception handler should return execution to
the address stored in BTR instead of the normal exception return
address stored in R17.
"""

Adjust the code to print the proper return address for delay slot
exceptions.

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Link: https://lore.kernel.org/r/20220213080925.1548411-4-ovidiu.panait@windriver.com
Signed-off-by: Michal Simek <michal.simek@xilinx.com>