On Fri, 2010-07-02 at 20:41 +0200, Alexander Graf wrote: > The u64s are 64-bit aligned, should they always be? > > That's obvious, isn't it? And the ABI only specifies u64s to be 32 bit > aligned, no? At least that's what ld and std specify. No, the PowerPC ABI specifies u64's to be 64-bit aligned, even for 32-bit binaries. Ben. > > > >> +The "ld" and "std" instructions are transormed to "lwz" and "stw" > instructions > >> +respectively on 32 bit systems with an added offset of 4 to > accomodate for big > >> +endianness. > > > > Will this add never overflow? Is there anything that checks for it? > > It basically means that to access dar, we either do > > ld rX, DAR(0) > > or > > lwz rX, DAR+4(0) > > > > > >> +mtmsrd rX, 0 b <special mtmsr section> > >> +mtmsr b <special mtmsr section> > > > > mtmsr rX > > Nod. -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
