Stafford Horne ae15a41a64 openrisc: entry: Fix delay slot exception detection ... Originally in patch e6d20c55a4 ("openrisc: entry: Fix delay slot detection") I fixed delay slot detection, but only for QEMU. We missed that hardware delay slot detection using delay slot exception flag (DSX) was still broken. This was because QEMU set the DSX flag in both pre-exception supervision register (ESR) and supervision register (SR) register, but on real hardware the DSX flag is only set on the SR register during exceptions. Fix this by carrying the DSX flag into the SR register during exception. We also update the DSX flag read locations to read the value from the SR register not the pt_regs SR register which represents ESR. The ESR should never have the DSX flag set. In the process I updated/removed a few comments to match the current state. Including removing a comment saying that the DSX detection logic was inefficient and needed to be rewritten. I have tested this on QEMU with a patch ensuring it matches the hardware specification. Link: https://lists.gnu.org/archive/html/qemu-devel/2018-07/msg00000.html Fixes: e6d20c55a4 ("openrisc: entry: Fix delay slot detection") Signed-off-by: Stafford Horne <shorne@gmail.com>		2018-07-01 16:48:24 +09:00
..
.gitignore
asm-offsets.c
dma.c	dma-debug: move initialization to common code	2018-05-08 13:02:42 +02:00
entry.S	openrisc: entry: Fix delay slot exception detection	2018-07-01 16:48:24 +09:00
head.S	openrisc: entry: Fix delay slot exception detection	2018-07-01 16:48:24 +09:00
irq.c
Makefile	OpenRISC updates for v4.15	2017-11-13 12:12:00 -08:00
module.c
or32_ksyms.c
process.c
prom.c
ptrace.c
setup.c
signal.c
smp.c	openrisc: fix possible deadlock scenario during timer sync	2017-11-03 14:01:17 +09:00
stacktrace.c	openrisc: support framepointers and STACKTRACE_SUPPORT	2017-11-03 14:01:15 +09:00
sync-timer.c	openrisc: add tick timer multi-core sync logic	2017-11-03 14:01:16 +09:00
sys_call_table.c
time.c	openrisc: add tick timer multi-core sync logic	2017-11-03 14:01:16 +09:00
traps.c	openrisc: entry: Fix delay slot exception detection	2018-07-01 16:48:24 +09:00
unwinder.c	openrisc: support framepointers and STACKTRACE_SUPPORT	2017-11-03 14:01:15 +09:00
vmlinux.h
vmlinux.lds.S	openrisc: Make THREAD_SIZE available to vmlinux.lds	2018-01-09 23:21:02 +00:00