hw/core: Introduce QEMU machine as QOM object

The main functional change is to convert QEMUMachine into MachineClass
and QEMUMachineInitArgs into MachineState, instance of MachineClass.

As a first step, in order to make possible an incremental development,
both QEMUMachine and QEMUMachineInitArgs are being embedded into the
new types.

Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>

hw/core/Makefile.objs

@@ -8,7 +8,7 @@ common-obj-$(CONFIG_EMPTY_SLOT) += empty_slot.o
 common-obj-$(CONFIG_XILINX_AXI) += stream.o
 common-obj-$(CONFIG_PTIMER) += ptimer.o
 common-obj-$(CONFIG_SOFTMMU) += sysbus.o
+common-obj-$(CONFIG_SOFTMMU) += machine.o
 common-obj-$(CONFIG_SOFTMMU) += null-machine.o
 common-obj-$(CONFIG_SOFTMMU) += loader.o
 common-obj-$(CONFIG_SOFTMMU) += qdev-properties-system.o
-

hw/core/machine.c

@@ -0,0 +1,28 @@
+/*
+ * QEMU Machine
+ *
+ * Copyright (C) 2014 Red Hat Inc
+ *
+ * Authors:
+ *   Marcel Apfelbaum <marcel.a@redhat.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "hw/boards.h"
+
+static const TypeInfo machine_info = {
+    .name = TYPE_MACHINE,
+    .parent = TYPE_OBJECT,
+    .abstract = true,
+    .class_size = sizeof(MachineClass),
+    .instance_size = sizeof(MachineState),
+};
+
+static void machine_register_types(void)
+{
+    type_register_static(&machine_info);
+}
+
+type_init(machine_register_types)

include/hw/boards.h

@@ -6,6 +6,7 @@
 #include "sysemu/blockdev.h"
 #include "sysemu/qemumachine.h"
 #include "hw/qdev.h"
+#include "qom/object.h"
 
 typedef struct QEMUMachineInitArgs {
     const QEMUMachine *machine;
@@ -55,4 +56,53 @@ QEMUMachine *find_default_machine(void);
 
 extern QEMUMachine *current_machine;
 
+#define TYPE_MACHINE "machine"
+#define MACHINE(obj) \
+    OBJECT_CHECK(MachineState, (obj), TYPE_MACHINE)
+#define MACHINE_GET_CLASS(obj) \
+    OBJECT_GET_CLASS(MachineClass, (obj), TYPE_MACHINE)
+#define MACHINE_CLASS(klass) \
+    OBJECT_CLASS_CHECK(MachineClass, (klass), TYPE_MACHINE)
+
+typedef struct MachineState MachineState;
+typedef struct MachineClass MachineClass;
+
+/**
+ * MachineClass:
+ * @qemu_machine: #QEMUMachine
+ */
+struct MachineClass {
+    /*< private >*/
+    ObjectClass parent_class;
+    /*< public >*/
+
+    QEMUMachine *qemu_machine;
+};
+
+/**
+ * MachineState:
+ */
+struct MachineState {
+    /*< private >*/
+    Object parent_obj;
+    /*< public >*/
+
+    char *accel;
+    bool kernel_irqchip;
+    int kvm_shadow_mem;
+    char *kernel;
+    char *initrd;
+    char *append;
+    char *dtb;
+    char *dumpdtb;
+    int phandle_start;
+    char *dt_compatible;
+    bool dump_guest_core;
+    bool mem_merge;
+    bool usb;
+    char *firmware;
+
+    QEMUMachineInitArgs init_args;
+};
+
 #endif