VM_REG_GUEST_R12
{ .id = VM_REG_GUEST_R12, .size = 8 },
error = vm_get_register(vcpu, VM_REG_GUEST_R12, &r12);
VM_REG_GUEST_R12, /* KDIREG_R12 */
if ((error = vm_set_register(vcpu, VM_REG_GUEST_R12, zero)) != 0)
case VM_REG_GUEST_R12:
case VM_REG_GUEST_R12:
VM_REG_GUEST_R12,
VM_REG_GUEST_R12,