target-openrisc: Register VMStateDescription for OpenRISCCPU

Since commit e67db06e9f6d7e514ee2a9b9b769ecd42977f6fb (target-or32: Add
target stubs and QOM cpu) a VMStateDescription existed, but
CPU_SAVE_VERSION was not set, so it was never registered.

Drop cpu_{save,load}() and register VMStateDescription via DeviceState.
Use a version_id of 1 and specify minimum versions as well.

Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>

target-openrisc/cpu.c

diff --git a/target-openrisc/cpu.c b/target-openrisc/cpu.c
index ffe14f3..f8703a0 100644
--- a/target-openrisc/cpu.c
+++ b/target-openrisc/cpu.c
@@ -149,6 +149,7 @@
 
     cc->class_by_name = openrisc_cpu_class_by_name;
     cc->do_interrupt = openrisc_cpu_do_interrupt;
+    device_class_set_vmsd(dc, &vmstate_openrisc_cpu);
 }
 
 static void cpu_register(const OpenRISCCPUInfo *info)

target-openrisc/cpu.h

diff --git a/target-openrisc/cpu.h b/target-openrisc/cpu.h
index b9c55ba..aee7769 100644
--- a/target-openrisc/cpu.h
+++ b/target-openrisc/cpu.h
@@ -360,6 +360,8 @@
 #define cpu_signal_handler cpu_openrisc_signal_handler
 
 #ifndef CONFIG_USER_ONLY
+extern const struct VMStateDescription vmstate_openrisc_cpu;
+
 /* hw/openrisc_pic.c */
 void cpu_openrisc_pic_init(OpenRISCCPU *cpu);
 

target-openrisc/machine.c

diff --git a/target-openrisc/machine.c b/target-openrisc/machine.c
index cba9811..6f864fe 100644
--- a/target-openrisc/machine.c
+++ b/target-openrisc/machine.c
@@ -20,8 +20,11 @@
 #include "hw/hw.h"
 #include "hw/boards.h"
 
-static const VMStateDescription vmstate_cpu = {
-    .name = "cpu",
+static const VMStateDescription vmstate_env = {
+    .name = "env",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .minimum_version_id_old = 1,
     .fields = (VMStateField[]) {
         VMSTATE_UINT32_ARRAY(gpr, CPUOpenRISCState, 32),
         VMSTATE_UINT32(sr, CPUOpenRISCState),
@@ -36,12 +39,14 @@
     }
 };
 
-void cpu_save(QEMUFile *f, void *opaque)
-{
-    vmstate_save_state(f, &vmstate_cpu, opaque);
-}
-
-int cpu_load(QEMUFile *f, void *opaque, int version_id)
-{
-    return vmstate_load_state(f, &vmstate_cpu, opaque, version_id);
-}
+const VMStateDescription vmstate_openrisc_cpu = {
+    .name = "cpu",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .minimum_version_id_old = 1,
+    .fields = (VMStateField[]) {
+        VMSTATE_CPU(),
+        VMSTATE_STRUCT(env, OpenRISCCPU, 1, vmstate_env, CPUOpenRISCState),
+        VMSTATE_END_OF_LIST()
+    }
+};