target-ppc: Add a new user mode target for little-endian PPC64.

Signed-off-by: Doug Kwan <dougkwan@google.com>
Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
target-ppc: Support VSX in PPC User Mode

Some modern tool chains use VSX instructions.  Therefore attempt to enable the VSX MSR
bit by default, just like similar bits (FP, VEC, SPE, etc.).

Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
target-ppc: Confirm That .bss Pages Are Valid

The existing code does a check to ensure that a .bss region is properly
mmap'd.  When additional mmap is required, the (guest) pages are also
validated.  However, this code has a bug: when host page size is larger
than target page size, it is possible for the .bss pages to already be
(host) mapped but the guest .bss pages may not be valid.

The check to mmap additional space is separated from the flagging of the
target (guest) pages, thus ensuring that both aspects are done properly.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
target-ppc: Store Quadword Conditional Drops Size Bit

The size and register information are encoded into the reserve_info field
of CPU state in the store conditional translation code.  Specifically, the
size is shifted left by 5 bits (see target-ppc/translate.c gen_conditional_store).

The user-mode store conditional code erroneously extracts the size by ANDing
with a 4 bit mask; this breaks if size >= 16.

Eliminate the mask to make the extraction of size mirror its encoding.

Signed-off-by: Tom Musta <tommusta@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
hw/pci-host/ppce500: Fix typo in vmstate definition

Fix a typo in the ppce500_pci vmstate definition which meant that
we were migrating the struct pci_inbound using the vmstate for
pci_outbound. Fortunately the two structures have exactly the same
format at the moment (four uint32_ts) so this was harmless, and
we can correcting the typo without a migration compatibility
break because the vmstate name doesn't go out on the wire.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Alexander Graf <agraf@suse.de>