[Qemu-devel] [PATCH RFC 1/5] hw/core: introduced qemu machine as QOM object

[Marcel Apfelbaum <marcel.a@redhat.com>]

The main functionality change is to convert QEMUMachine into QemuMachineClass
and QEMUMachineInitArgs into QemuMachineState, instance of QemuMachineClass.

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

Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
---
 hw/core/Makefile.objs |  2 +-
 hw/core/machine.c     | 38 ++++++++++++++++++++++++++++++++++++++
 include/hw/boards.h   | 36 ++++++++++++++++++++++++++++++++++++
 3 files changed, 75 insertions(+), 1 deletion(-)
 create mode 100644 hw/core/machine.c

diff --git a/hw/core/Makefile.objs b/hw/core/Makefile.objs
index 950146c..aabd1ef 100644
--- a/hw/core/Makefile.objs
+++ b/hw/core/Makefile.objs
@@ -10,4 +10,4 @@ common-obj-$(CONFIG_SOFTMMU) += sysbus.o
 common-obj-$(CONFIG_SOFTMMU) += null-machine.o
 common-obj-$(CONFIG_SOFTMMU) += loader.o
 common-obj-$(CONFIG_SOFTMMU) += qdev-properties-system.o
-
+common-obj-$(CONFIG_SOFTMMU) += machine.o
diff --git a/hw/core/machine.c b/hw/core/machine.c
new file mode 100644
index 0000000..2c6e1a3
--- /dev/null
+++ b/hw/core/machine.c
@@ -0,0 +1,38 @@
+/*
+ * QEMU Machine
+ *
+ * Copyright (C) 2013 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 void qemu_machine_initfn(Object *obj)
+{
+}
+
+static void qemu_machine_class_init(ObjectClass *oc, void *data)
+{
+}
+
+static const TypeInfo qemu_machine_info = {
+    .name = TYPE_QEMU_MACHINE,
+    .parent = TYPE_OBJECT,
+    .abstract = true,
+    .class_size = sizeof(QemuMachineClass),
+    .class_init = qemu_machine_class_init,
+    .instance_size = sizeof(QemuMachineState),
+    .instance_init = qemu_machine_initfn,
+};
+
+static void register_types(void)
+{
+    type_register_static(&qemu_machine_info);
+}
+
+type_init(register_types);
diff --git a/include/hw/boards.h b/include/hw/boards.h
index 2151460..682cd7f 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -5,6 +5,7 @@
 
 #include "sysemu/blockdev.h"
 #include "hw/qdev.h"
+#include "qom/object.h"
 
 typedef struct QEMUMachine QEMUMachine;
 
@@ -53,4 +54,39 @@ QEMUMachine *find_default_machine(void);
 
 extern QEMUMachine *current_machine;
 
+#define TYPE_QEMU_MACHINE "machine"
+#define QEMU_MACHINE(obj) \
+    OBJECT_CHECK(QemuMachineState, (obj), TYPE_QEMU_MACHINE)
+#define QEMU_MACHINE_GET_CLASS(obj) \
+    OBJECT_GET_CLASS(QemuMachineClass, (obj), TYPE_QEMU_MACHINE)
+#define QEMU_MACHINE_CLASS(klass) \
+    OBJECT_CLASS_CHECK(QemuMachineClass, (klass), TYPE_QEMU_MACHINE)
+
+typedef struct QemuMachineState QemuMachineState;
+typedef struct QemuMachineClass QemuMachineClass;
+
+/**
+ * @QemuMachineClass
+ *
+ * @parent_class: opaque parent class container
+ */
+struct QemuMachineClass {
+    ObjectClass parent_class;
+
+    QEMUMachine *qemu_machine;
+};
+
+/**
+ * @QemuMachineState
+ *
+ * @parent: opaque parent object container
+ */
+struct QemuMachineState {
+    /* private */
+    Object parent;
+    /* public */
+
+    QEMUMachineInitArgs *init_args;
+};
+
 #endif
-- 
1.8.3.1