On 03/12/2015 03:41 PM, Richard Henderson wrote:
On 03/12/2015 01:41 AM, Mark Cave-Ayland wrote:
Whilst testing git master in preparation for some OpenBIOS updates, I'm
seeing the following TCG assert in one of my older test images:
$ gdb --args ./qemu-system-ppc -cdrom
/home/build/src/qemu/image/ppc/ubuntu-5.10-live-powerpc.iso -boot d -g
800x600x8
Older, eh? I can only find 5.04. ;-)
And, fwiw, that doesn't assert. I get all the way to
Kernel panic - not syncing: VFS: unable to mount root fs on unknown-block(1,0)
So, I guess I need something different to
http://cdimage.ubuntu.com/ubuntu-mate/daily-live/current/vivid-desktop-powerpc.iso
to reproduce this.
r~
Hi Richard,
I can reproduce it fine here with
http://old-releases.ubuntu.com/releases/5.10/.
As far as I see it, the Instruction at 0xc9105830 generates a mov 0 to
r30, which is optimized by tcg_opt_gen_mov and r30 is set to
TCG_TEMP_CONST. When 0xc9105838 or r0, r30, r30 should be optimized r30
is already in the state TCG_TEMP_CONST and the assert fails.
Cheers,
Bastian
