[Qemu-devel] Single stepping for PPC broken?

[Marius Groeger <mgroeger@sysgo.com>]

Hello all,

I'm having problems with qemu's (-M prep, -cpu 604) handling of the 
MSR_SE bit. My gdbstub can successfully step along regular code, but 
qemu chokes when stepping over a branch instruction like "blr". 
(Needless to say, that same gdbstub works fine on real hardware). I 
tried older versions of qemu and found that the code base 8 months ago 
worked fine.

I'd like to try this with Linux and gdbserver (or a native gdb) but I 
don't have any boot images handy and oszoo.org seems to be down right 
now.

Any ideas? Did perhaps the PPC440 additions add some regression here?
Can someone try booting Linux on qemu-system-ppc and try 
gdb/gdbserver?

(I haven't been following this list lately, so please bear with me if 
I missed something critical. I've searched the archives, of course, 
but to no avail.)

Regards and TIA,
Marius

-- 
Marius Groeger <mgroeger@sysgo.com>
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