vmstate: port m48t59

Signed-off-by: NJuan Quintela <quintela@redhat.com>

hw/m48t59.c

@@ -585,28 +585,18 @@ static CPUReadMemoryFunc * const nvram_read[] = {
     &nvram_readl,
 };
 
-static void m48t59_save(QEMUFile *f, void *opaque)
-{
-    M48t59State *s = opaque;
-
-    qemu_put_8s(f, &s->lock);
-    qemu_put_be16s(f, &s->addr);
-    qemu_put_buffer(f, s->buffer, s->size);
-}
-
-static int m48t59_load(QEMUFile *f, void *opaque, int version_id)
-{
-    M48t59State *s = opaque;
-
-    if (version_id != 1)
-        return -EINVAL;
-
-    qemu_get_8s(f, &s->lock);
-    qemu_get_be16s(f, &s->addr);
-    qemu_get_buffer(f, s->buffer, s->size);
-
-    return 0;
-}
+static const VMStateDescription vmstate_m48t59 = {
+    .name = "m48t59",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .minimum_version_id_old = 1,
+    .fields      = (VMStateField[]) {
+        VMSTATE_UINT8(lock, M48t59State),
+        VMSTATE_UINT16(addr, M48t59State),
+        VMSTATE_VBUFFER_UINT32(buffer, M48t59State, 0, NULL, 0, size),
+        VMSTATE_END_OF_LIST()
+    }
+};
 
 static void m48t59_reset_common(M48t59State *NVRAM)
 {
@@ -696,7 +686,7 @@ static void m48t59_init_common(M48t59State *s)
     }
     qemu_get_timedate(&s->alarm, 0);
 
-    register_savevm(NULL, "m48t59", -1, 1, m48t59_save, m48t59_load, s);
+    vmstate_register(NULL, -1, &vmstate_m48t59, s);
 }
 
 static int m48t59_init_isa1(ISADevice *dev)