QOM Super class access

From: Peter Crosthwaite <[email protected]>

This series enables QOM super class access and demostrates some usages. Replaces the save->override->call via FooClass technique, to reduce some of the boiler plate in recently fully QOMified devices.

Applied the change to ARM CPU, MB CPU and some of Andreas's recently QOMified i386 devices, all which have the save->override->call issue. ARMCPU I've done a brief test on and seems to work.

ARM CPU was particularly difficult, as it has 3 layers of heirachy, where a non-concrete class (TYPE_ARM_CPU) need to super class itself (to TYPE_CPU). This sees the need for super-classers to specify their expected base class level. See patches for illustration.

The main future work to the series is to apply the change pattern to the reset of the tree

changed since V2:
Removed object_class_get_parent_by_name
introduce FOO_PARENT_CLASS macros
changed since V1:
Simplified to use object_class_get_parent_by_type (suggest by Hu Tao)

Peter Crosthwaite (4):
target-arm/cpu.c: delete un-needed instance/class sizes
target-arm: Use parent classes for reset + realize
target-microblaze: Use parent class for reset + realize
i8254: Use parent class for realize

 hw/i386/kvm/i8254.c         | 19 ++++---------------
 hw/timer/i8254.c            | 17 ++++-------------
 target-arm/cpu-qom.h        | 22 ++--------------------
 target-arm/cpu.c            | 16 +++++-----------
 target-microblaze/cpu-qom.h | 22 ++--------------------
 target-microblaze/cpu.c     | 14 ++++----------
 6 files changed, 21 insertions(+), 89 deletions(-)

1.8.3.rc1.44.gb387c77.dirty