-
Alexander Graf authored
PowerPC CPUs have had two ways to read the time base for quite some time now. They provide it using the mfspr instruction or - if a special bit is set in that opcode - using mftb. For timekeeping we're currently using mftb. While trying to get Qemu up and running on an e500v2 system, I stumbled over the CPU not supporting mftbu. It just throws an illegal instruction trap. So let's read the SPR values instead. All PPC CPUs should support them anyways. I tested this patch on an e500v2 system where it makes qemu work and on my 970MP system with 32-bit user space where everything still works with this patch applied. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: malc <av1474@comtv.ru>
4a9590f3