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[Qemu-commits] [COMMIT ec245e2] Add VMState support for structs
From: |
Anthony Liguori |
Subject: |
[Qemu-commits] [COMMIT ec245e2] Add VMState support for structs |
Date: |
Fri, 28 Aug 2009 02:19:57 -0000 |
From: Juan Quintela <address@hidden>
This patch adds support for saving one VMStateDescription from other
VMStateDescription.
Signed-off-by: Juan Quintela <address@hidden>
Signed-off-by: Anthony Liguori <address@hidden>
diff --git a/hw/hw.h b/hw/hw.h
index a8534fa..2ee307e 100644
--- a/hw/hw.h
+++ b/hw/hw.h
@@ -283,6 +283,7 @@ enum VMStateFlags {
VMS_SINGLE = 0x001,
VMS_POINTER = 0x002,
VMS_ARRAY = 0x004,
+ VMS_STRUCT = 0x008,
};
typedef struct {
@@ -292,6 +293,7 @@ typedef struct {
int num;
const VMStateInfo *info;
enum VMStateFlags flags;
+ const VMStateDescription *vmsd;
int version_id;
} VMStateField;
@@ -349,6 +351,16 @@ extern const VMStateInfo vmstate_info_timer;
+ type_check_array(_type,typeof_field(_state, _field),_num) \
}
+#define VMSTATE_STRUCT(_field, _state, _version, _vmsd, _type) { \
+ .name = (stringify(_field)), \
+ .version_id = (_version), \
+ .vmsd = &(_vmsd), \
+ .size = sizeof(_type), \
+ .flags = VMS_STRUCT, \
+ .offset = offsetof(_state, _field) \
+ + type_check(_type,typeof_field(_state, _field)) \
+}
+
/* _f : field name
_n : num of elements
_s : struct state name
diff --git a/savevm.c b/savevm.c
index 7bcb783..71ec4ca 100644
--- a/savevm.c
+++ b/savevm.c
@@ -983,7 +983,13 @@ int vmstate_load_state(QEMUFile *f, const
VMStateDescription *vmsd,
}
for (i = 0; i < n_elems; i++) {
void *addr = base_addr + field->size * i;
- ret = field->info->get(f, addr, field->size);
+
+ if (field->flags & VMS_STRUCT) {
+ ret = vmstate_load_state(f, field->vmsd, addr, version_id);
+ } else {
+ ret = field->info->get(f, addr, field->size);
+
+ }
if (ret < 0) {
return ret;
}
@@ -1011,7 +1017,12 @@ void vmstate_save_state(QEMUFile *f, const
VMStateDescription *vmsd,
}
for (i = 0; i < n_elems; i++) {
const void *addr = base_addr + field->size * i;
- field->info->put(f, addr, field->size);
+
+ if (field->flags & VMS_STRUCT) {
+ vmstate_save_state(f, field->vmsd, addr);
+ } else {
+ field->info->put(f, addr, field->size);
+ }
}
field++;
}
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