[Qemu-devel] [PATCH 10/36] vmstate: introduce float64 arrays

[Juan Quintela]

Signed-off-by: Juan Quintela <quint...@redhat.com>
---
 savevm.c  |   30 ++++++++++++++++++++++++++++++
 vmstate.h |    4 ++++
 2 files changed, 34 insertions(+), 0 deletions(-)

diff --git a/savevm.c b/savevm.c
index 09a2149..822f078 100644
--- a/savevm.c
+++ b/savevm.c
@@ -1112,6 +1112,36 @@ const VMStateInfo vmstate_info_float32 = {
     .put  = put_float32,
 };

+/* 64 bit float */
+
+typedef union {
+    float64 d;
+    uint64_t l;
+} VMStateFloat64;
+
+static int get_float64(QEMUFile *f, void *pv, size_t size)
+{
+    float64 *v = pv;
+    VMStateFloat64 u;
+    qemu_get_be64s(f, &u.l);
+    *v = u.d;
+    return 0;
+}
+
+static void put_float64(QEMUFile *f, void *pv, size_t size)
+{
+    float64 *v = pv;
+    VMStateFloat64 u;
+    u.d = *v;
+    qemu_put_be64s(f, &u.l);
+}
+
+const VMStateInfo vmstate_info_float64 = {
+    .name = "float64",
+    .get  = get_float64,
+    .put  = put_float64,
+};
+
 /* timers  */

 static int get_timer(QEMUFile *f, void *pv, size_t size)
diff --git a/vmstate.h b/vmstate.h
index 135c5aa..d3fb88c 100644
--- a/vmstate.h
+++ b/vmstate.h
@@ -131,6 +131,7 @@ extern const VMStateInfo vmstate_info_uint32;
 extern const VMStateInfo vmstate_info_uint64;

 extern const VMStateInfo vmstate_info_float32;
+extern const VMStateInfo vmstate_info_float64;

 extern const VMStateInfo vmstate_info_timer;
 extern const VMStateInfo vmstate_info_buffer;
@@ -564,6 +565,9 @@ extern const VMStateDescription vmstate_cpu;
 #define VMSTATE_FLOAT32_ARRAY(_f, _s, _n)                             \
     VMSTATE_ARRAY(_f, _s, _n, 0, vmstate_info_float32, float32)

+#define VMSTATE_FLOAT64_ARRAY(_f, _s, _n)                             \
+    VMSTATE_ARRAY(_f, _s, _n, 0, vmstate_info_float64, float64)
+
 #define VMSTATE_BUFFER_V(_f, _s, _v)                                  \
     VMSTATE_STATIC_BUFFER(_f, _s, _v, NULL, 0, sizeof(typeof_field(_s, _f)))

-- 
1.7.7.6