brk insns while in user mode raise priv insn exceptions.
This commit makes gdbserver work on linux guests.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@petalogix.com>
I need to see EAR register in output because I need to parse irqsoff problem.
Signed-off-by: Michal Simek <monstr@monstr.eu>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
In the very least, a change like this requires discussion on the list.
The naming convention is goofy and it causes a massive merge problem. Something
like this _must_ be presented on the list first so people can provide input
and cope with it.
This reverts commit 99a0949b72.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Problem: Our file sys-queue.h is a copy of the BSD file, but there are
some additions and it's not entirely compatible. Because of that, there have
been conflicts with system headers on BSD systems. Some hacks have been
introduced in the commits 15cc923584,
f40d753718,
96555a96d7 and
3990d09adf but the fixes were fragile.
Solution: Avoid the conflict entirely by renaming the functions and the
file. Revert the previous hacks.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
If PVR settings enable illegal insn trap, trap when QEMU finds an
insn it knows nothing about.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
The microblaze gives MMU faults priority. For stores we still
have a flaw that the value leaks to memory in the case of an
unaligned exception.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
* Correct PVR checks for masking off individual exceptions.
* Correct FPU exception code.
* Set EAR on unaligned and unassigned exceptions.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
The microblaze MMU can be synthesized in different configurations.
Have the MMU model show more respect to the chosen configuration.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
Raise illegal instruction exceptions when executing instructions that
require units not available on the particulare microblaze configuration.
Also trap priviliege violations made by userspace.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
handle_cpu_signal is very nearly copy-paste code for each target, with a
few minor variations. This patch sets up appropriate defaults for a
generic handle_cpu_signal and provides overrides for particular targets
that did things differently. Fixing things like the persistent (XXX:
use sigsetjmp) should now become somewhat easier.
Previous comments on this patch suggest that the "activate soft MMU for
this block" comments refer to defunct functionality. I have removed
such blocks for the appropriate targets in this patch.
Signed-off-by: Nathan Froyd <froydnj@codesourcery.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This setup was designed by petalogix and is supported by upstream linux.
The design targets a xilinx spartan-3a-1800 dsp board with MMU.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
