Messages in this thread | | | Date | Tue, 28 Feb 2012 12:21:37 +0000 | From | Stefano Stabellini <> | Subject | Re: [PATCH-WIP 01/13] xen/arm: use r12 to pass the hypercall number to the hypervisor |
| |
On Tue, 28 Feb 2012, Dave Martin wrote: > > Given that Stefano is proposing to make the ISS a (per-hypervisor) > > constant we could consider just defining the Thumb and non-Thumb > > constants instead of doing all the construction with the __HVC_IMM stuff > > -- that would remove a big bit of the macroization. > > It's not quite as simple as that -- emitting instructions using data > directives is not endianness safe, and even in the cases where .long gives > the right result for ARM, it gives the wrong result for 32-bit Thumb > instructions if the opcode is given in human-readable order. > > I was trying to solve the same problem for the kvm guys with some global > macros -- I'm aiming to get a patch posted soon, so I'll make sure > you're on CC.
That would be great, thanks!
| |