Merge remote-tracking branch 'afaerber-or/qom-next-1' into staging

* afaerber-or/qom-next-1:
  target-i386: Use uint32 visitor for [x]level properties
  qdev: Remove PropertyInfo range checking
  qdev: Switch property accessors to fixed-width visitor interfaces
  qdev: Use int32_t container for devfn property
  qapi: Add String visitor coverage to serialization unit tests
  qapi: String visitor, use %f representation for floats
  qapi: Unit tests for visitor-based serialization
  qapi: Add Visitor interfaces for uint*_t and int*_t

13 files changed, 1041 insertions, 172 deletions

diff --git a/hw/mc146818rtc.c b/hw/mc146818rtc.c
index 9c64e0a..3777f85 100644
--- a/hw/mc146818rtc.c
+++ b/hw/mc146818rtc.c
@@ -599,13 +599,6 @@ static const MemoryRegionOps cmos_ops = {
     .old_portio = cmos_portio
 };
 
-// FIXME add int32 visitor
-static void visit_type_int32(Visitor *v, int *value, const char *name, Error **errp)
-{
-    int64_t val = *value;
-    visit_type_int(v, &val, name, errp);
-}
-
 static void rtc_get_date(Object *obj, Visitor *v, void *opaque,
                          const char *name, Error **errp)
 {
diff --git a/hw/pci.c b/hw/pci.c
index c1ebdde..127b7ac 100644
--- a/hw/pci.c
+++ b/hw/pci.c
@@ -1537,7 +1537,7 @@ PCIDevice *pci_create_multifunction(PCIBus *bus, int devfn, bool multifunction,
     DeviceState *dev;
 
     dev = qdev_create(&bus->qbus, name);
-    qdev_prop_set_uint32(dev, "addr", devfn);
+    qdev_prop_set_int32(dev, "addr", devfn);
     qdev_prop_set_bit(dev, "multifunction", multifunction);
     return PCI_DEVICE(dev);
 }
diff --git a/hw/pci.h b/hw/pci.h
index c3cacce..7f223c0 100644
--- a/hw/pci.h
+++ b/hw/pci.h
@@ -197,7 +197,7 @@ struct PCIDevice {
 
     /* the following fields are read only */
     PCIBus *bus;
-    uint32_t devfn;
+    int32_t devfn;
     char name[64];
     PCIIORegion io_regions[PCI_NUM_REGIONS];
 
diff --git a/hw/qdev-addr.c b/hw/qdev-addr.c
index 0bb16c7..b711b6b 100644
--- a/hw/qdev-addr.c
+++ b/hw/qdev-addr.c
@@ -27,7 +27,7 @@ static void get_taddr(Object *obj, Visitor *v, void *opaque,
     int64_t value;
 
     value = *ptr;
-    visit_type_int(v, &value, name, errp);
+    visit_type_int64(v, &value, name, errp);
 }
 
 static void set_taddr(Object *obj, Visitor *v, void *opaque,
@@ -44,7 +44,7 @@ static void set_taddr(Object *obj, Visitor *v, void *opaque,
         return;
     }
 
-    visit_type_int(v, &value, name, &local_err);
+    visit_type_int64(v, &value, name, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
diff --git a/hw/qdev-properties.c b/hw/qdev-properties.c
index b7b5597..9ae3187 100644
--- a/hw/qdev-properties.c
+++ b/hw/qdev-properties.c
@@ -76,52 +76,35 @@ PropertyInfo qdev_prop_bit = {
 
 /* --- 8bit integer --- */
 
-static void get_int8(Object *obj, Visitor *v, void *opaque,
-                     const char *name, Error **errp)
+static void get_uint8(Object *obj, Visitor *v, void *opaque,
+                      const char *name, Error **errp)
 {
     DeviceState *dev = DEVICE(obj);
     Property *prop = opaque;
-    int8_t *ptr = qdev_get_prop_ptr(dev, prop);
-    int64_t value;
+    uint8_t *ptr = qdev_get_prop_ptr(dev, prop);
 
-    value = *ptr;
-    visit_type_int(v, &value, name, errp);
+    visit_type_uint8(v, ptr, name, errp);
 }
 
-static void set_int8(Object *obj, Visitor *v, void *opaque,
-                     const char *name, Error **errp)
+static void set_uint8(Object *obj, Visitor *v, void *opaque,
+                      const char *name, Error **errp)
 {
     DeviceState *dev = DEVICE(obj);
     Property *prop = opaque;
-    int8_t *ptr = qdev_get_prop_ptr(dev, prop);
-    Error *local_err = NULL;
-    int64_t value;
+    uint8_t *ptr = qdev_get_prop_ptr(dev, prop);
 
     if (dev->state != DEV_STATE_CREATED) {
         error_set(errp, QERR_PERMISSION_DENIED);
         return;
     }
 
-    visit_type_int(v, &value, name, &local_err);
-    if (local_err) {
-        error_propagate(errp, local_err);
-        return;
-    }
-    if (value >= prop->info->min && value <= prop->info->max) {
-        *ptr = value;
-    } else {
-        error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE,
-                  dev->id?:"", name, value, prop->info->min,
-                  prop->info->max);
-    }
+    visit_type_uint8(v, ptr, name, errp);
 }
 
 PropertyInfo qdev_prop_uint8 = {
     .name  = "uint8",
-    .get   = get_int8,
-    .set   = set_int8,
-    .min   = 0,
-    .max   = 255,
+    .get   = get_uint8,
+    .set   = set_uint8,
 };
 
 /* --- 8bit hex value --- */
@@ -154,74 +137,78 @@ PropertyInfo qdev_prop_hex8 = {
     .legacy_name  = "hex8",
     .parse = parse_hex8,
     .print = print_hex8,
-    .get   = get_int8,
-    .set   = set_int8,
-    .min   = 0,
-    .max   = 255,
+    .get   = get_uint8,
+    .set   = set_uint8,
 };
 
 /* --- 16bit integer --- */
 
-static void get_int16(Object *obj, Visitor *v, void *opaque,
-                      const char *name, Error **errp)
+static void get_uint16(Object *obj, Visitor *v, void *opaque,
+                       const char *name, Error **errp)
 {
     DeviceState *dev = DEVICE(obj);
     Property *prop = opaque;
-    int16_t *ptr = qdev_get_prop_ptr(dev, prop);
-    int64_t value;
+    uint16_t *ptr = qdev_get_prop_ptr(dev, prop);
 
-    value = *ptr;
-    visit_type_int(v, &value, name, errp);
+    visit_type_uint16(v, ptr, name, errp);
 }
 
-static void set_int16(Object *obj, Visitor *v, void *opaque,
-                      const char *name, Error **errp)
+static void set_uint16(Object *obj, Visitor *v, void *opaque,
+                       const char *name, Error **errp)
 {
     DeviceState *dev = DEVICE(obj);
     Property *prop = opaque;
-    int16_t *ptr = qdev_get_prop_ptr(dev, prop);
-    Error *local_err = NULL;
-    int64_t value;
+    uint16_t *ptr = qdev_get_prop_ptr(dev, prop);
 
     if (dev->state != DEV_STATE_CREATED) {
         error_set(errp, QERR_PERMISSION_DENIED);
         return;
     }
 
-    visit_type_int(v, &value, name, &local_err);
-    if (local_err) {
-        error_propagate(errp, local_err);
-        return;
-    }
-    if (value >= prop->info->min && value <= prop->info->max) {
-        *ptr = value;
-    } else {
-        error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE,
-                  dev->id?:"", name, value, prop->info->min,
-                  prop->info->max);
-    }
+    visit_type_uint16(v, ptr, name, errp);
 }
 
 PropertyInfo qdev_prop_uint16 = {
     .name  = "uint16",
-    .get   = get_int16,
-    .set   = set_int16,
-    .min   = 0,
-    .max   = 65535,
+    .get   = get_uint16,
+    .set   = set_uint16,
 };
 
 /* --- 32bit integer --- */
 
+static void get_uint32(Object *obj, Visitor *v, void *opaque,
+                       const char *name, Error **errp)
+{
+    DeviceState *dev = DEVICE(obj);
+    Property *prop = opaque;
+    uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
+
+    visit_type_uint32(v, ptr, name, errp);
+}
+
+static void set_uint32(Object *obj, Visitor *v, void *opaque,
+                       const char *name, Error **errp)
+{
+    DeviceState *dev = DEVICE(obj);
+    Property *prop = opaque;
+    uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
+
+    if (dev->state != DEV_STATE_CREATED) {
+        error_set(errp, QERR_PERMISSION_DENIED);
+        return;
+    }
+
+    visit_type_uint32(v, ptr, name, errp);
+}
+
 static void get_int32(Object *obj, Visitor *v, void *opaque,
                       const char *name, Error **errp)
 {
     DeviceState *dev = DEVICE(obj);
     Property *prop = opaque;
     int32_t *ptr = qdev_get_prop_ptr(dev, prop);
-    int64_t value;
 
-    value = *ptr;
-    visit_type_int(v, &value, name, errp);
+    visit_type_int32(v, ptr, name, errp);
 }
 
 static void set_int32(Object *obj, Visitor *v, void *opaque,
@@ -230,42 +217,25 @@ static void set_int32(Object *obj, Visitor *v, void *opaque,
     DeviceState *dev = DEVICE(obj);
     Property *prop = opaque;
     int32_t *ptr = qdev_get_prop_ptr(dev, prop);
-    Error *local_err = NULL;
-    int64_t value;
 
     if (dev->state != DEV_STATE_CREATED) {
         error_set(errp, QERR_PERMISSION_DENIED);
         return;
     }
 
-    visit_type_int(v, &value, name, &local_err);
-    if (local_err) {
-        error_propagate(errp, local_err);
-        return;
-    }
-    if (value >= prop->info->min && value <= prop->info->max) {
-        *ptr = value;
-    } else {
-        error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE,
-                  dev->id?:"", name, value, prop->info->min,
-                  prop->info->max);
-    }
+    visit_type_int32(v, ptr, name, errp);
 }
 
 PropertyInfo qdev_prop_uint32 = {
     .name  = "uint32",
-    .get   = get_int32,
-    .set   = set_int32,
-    .min   = 0,
-    .max   = 0xFFFFFFFFULL,
+    .get   = get_uint32,
+    .set   = set_uint32,
 };
 
 PropertyInfo qdev_prop_int32 = {
     .name  = "int32",
     .get   = get_int32,
     .set   = set_int32,
-    .min   = -0x80000000LL,
-    .max   = 0x7FFFFFFFLL,
 };
 
 /* --- 32bit hex value --- */
@@ -298,43 +268,41 @@ PropertyInfo qdev_prop_hex32 = {
     .legacy_name  = "hex32",
     .parse = parse_hex32,
     .print = print_hex32,
-    .get   = get_int32,
-    .set   = set_int32,
-    .min   = 0,
-    .max   = 0xFFFFFFFFULL,
+    .get   = get_uint32,
+    .set   = set_uint32,
 };
 
 /* --- 64bit integer --- */
 
-static void get_int64(Object *obj, Visitor *v, void *opaque,
-                      const char *name, Error **errp)
+static void get_uint64(Object *obj, Visitor *v, void *opaque,
+                       const char *name, Error **errp)
 {
     DeviceState *dev = DEVICE(obj);
     Property *prop = opaque;
-    int64_t *ptr = qdev_get_prop_ptr(dev, prop);
+    uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
 
-    visit_type_int(v, ptr, name, errp);
+    visit_type_uint64(v, ptr, name, errp);
 }
 
-static void set_int64(Object *obj, Visitor *v, void *opaque,
-                      const char *name, Error **errp)
+static void set_uint64(Object *obj, Visitor *v, void *opaque,
+                       const char *name, Error **errp)
 {
     DeviceState *dev = DEVICE(obj);
     Property *prop = opaque;
-    int64_t *ptr = qdev_get_prop_ptr(dev, prop);
+    uint64_t *ptr = qdev_get_prop_ptr(dev, prop);
 
     if (dev->state != DEV_STATE_CREATED) {
         error_set(errp, QERR_PERMISSION_DENIED);
         return;
     }
 
-    visit_type_int(v, ptr, name, errp);
+    visit_type_uint64(v, ptr, name, errp);
 }
 
 PropertyInfo qdev_prop_uint64 = {
     .name  = "uint64",
-    .get   = get_int64,
-    .set   = set_int64,
+    .get   = get_uint64,
+    .set   = set_uint64,
 };
 
 /* --- 64bit hex value --- */
@@ -367,8 +335,8 @@ PropertyInfo qdev_prop_hex64 = {
     .legacy_name  = "hex64",
     .parse = parse_hex64,
     .print = print_hex64,
-    .get   = get_int64,
-    .set   = set_int64,
+    .get   = get_uint64,
+    .set   = set_uint64,
 };
 
 /* --- string --- */
@@ -645,7 +613,7 @@ static void get_vlan(Object *obj, Visitor *v, void *opaque,
     int64_t id;
 
     id = *ptr ? (*ptr)->id : -1;
-    visit_type_int(v, &id, name, errp);
+    visit_type_int64(v, &id, name, errp);
 }
 
 static void set_vlan(Object *obj, Visitor *v, void *opaque,
@@ -663,7 +631,7 @@ static void set_vlan(Object *obj, Visitor *v, void *opaque,
         return;
     }
 
-    visit_type_int(v, &id, name, &local_err);
+    visit_type_int64(v, &id, name, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -824,7 +792,7 @@ static void set_pci_devfn(Object *obj, Visitor *v, void *opaque,
 {
     DeviceState *dev = DEVICE(obj);
     Property *prop = opaque;
-    uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
+    int32_t value, *ptr = qdev_get_prop_ptr(dev, prop);
     unsigned int slot, fn, n;
     Error *local_err = NULL;
     char *str;
@@ -837,7 +805,17 @@ static void set_pci_devfn(Object *obj, Visitor *v, void *opaque,
     visit_type_str(v, &str, name, &local_err);
     if (local_err) {
         error_free(local_err);
-        return set_int32(obj, v, opaque, name, errp);
+        local_err = NULL;
+        visit_type_int32(v, &value, name, &local_err);
+        if (local_err) {
+            error_propagate(errp, local_err);
+        } else if (value < -1 || value > 255) {
+            error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
+                      "pci_devfn");
+        } else {
+            *ptr = value;
+        }
+        return;
     }
 
     if (sscanf(str, "%x.%x%n", &slot, &fn, &n) != 2) {
@@ -860,7 +838,7 @@ invalid:
 
 static int print_pci_devfn(DeviceState *dev, Property *prop, char *dest, size_t len)
 {
-    uint32_t *ptr = qdev_get_prop_ptr(dev, prop);
+    int32_t *ptr = qdev_get_prop_ptr(dev, prop);
 
     if (*ptr == -1) {
         return snprintf(dest, len, "<unset>");
@@ -875,11 +853,6 @@ PropertyInfo qdev_prop_pci_devfn = {
     .print = print_pci_devfn,
     .get   = get_int32,
     .set   = set_pci_devfn,
-    /* FIXME: this should be -1...255, but the address is stored
-     * into an uint32_t rather than int32_t.
-     */
-    .min   = 0,
-    .max   = 0xFFFFFFFFULL,
 };
 
 /* --- blocksize --- */
@@ -889,31 +862,31 @@ static void set_blocksize(Object *obj, Visitor *v, void *opaque,
 {
     DeviceState *dev = DEVICE(obj);
     Property *prop = opaque;
-    int16_t *ptr = qdev_get_prop_ptr(dev, prop);
+    uint16_t value, *ptr = qdev_get_prop_ptr(dev, prop);
     Error *local_err = NULL;
-    int64_t value;
+    const int64_t min = 512;
+    const int64_t max = 32768;
 
     if (dev->state != DEV_STATE_CREATED) {
         error_set(errp, QERR_PERMISSION_DENIED);
         return;
     }
 
-    visit_type_int(v, &value, name, &local_err);
+    visit_type_uint16(v, &value, name, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
     }
-    if (value < prop->info->min || value > prop->info->max) {
+    if (value < min || value > max) {
         error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE,
-                  dev->id?:"", name, value, prop->info->min,
-                  prop->info->max);
+                  dev->id?:"", name, (int64_t)value, min, max);
         return;
     }
 
     /* We rely on power-of-2 blocksizes for bitmasks */
     if ((value & (value - 1)) != 0) {
         error_set(errp, QERR_PROPERTY_VALUE_NOT_POWER_OF_2,
-                  dev->id?:"", name, value);
+                  dev->id?:"", name, (int64_t)value);
         return;
     }
 
@@ -922,10 +895,8 @@ static void set_blocksize(Object *obj, Visitor *v, void *opaque,
 
 PropertyInfo qdev_prop_blocksize = {
     .name  = "blocksize",
-    .get   = get_int16,
+    .get   = get_uint16,
     .set   = set_blocksize,
-    .min   = 512,
-    .max   = 65024,
 };
 
 /* --- public helpers --- */
diff --git a/hw/qdev.h b/hw/qdev.h
index 4e90119..5386b16 100644
--- a/hw/qdev.h
+++ b/hw/qdev.h
@@ -122,8 +122,6 @@ struct PropertyInfo {
     const char *name;
     const char *legacy_name;
     const char **enum_table;
-    int64_t min;
-    int64_t max;
     int (*parse)(DeviceState *dev, Property *prop, const char *str);
     int (*print)(DeviceState *dev, Property *prop, char *dest, size_t len);
     ObjectPropertyAccessor *get;
@@ -267,7 +265,7 @@ extern PropertyInfo qdev_prop_blocksize;
 #define DEFINE_PROP_HEX64(_n, _s, _f, _d)                       \
     DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_hex64, uint64_t)
 #define DEFINE_PROP_PCI_DEVFN(_n, _s, _f, _d)                   \
-    DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_pci_devfn, uint32_t)
+    DEFINE_PROP_DEFAULT(_n, _s, _f, _d, qdev_prop_pci_devfn, int32_t)
 
 #define DEFINE_PROP_PTR(_n, _s, _f)             \
     DEFINE_PROP(_n, _s, _f, qdev_prop_ptr, void*)
diff --git a/qapi/qapi-visit-core.c b/qapi/qapi-visit-core.c
index a4e088c..ffffbf7 100644
--- a/qapi/qapi-visit-core.c
+++ b/qapi/qapi-visit-core.c
@@ -97,6 +97,145 @@ void visit_type_int(Visitor *v, int64_t *obj, const char *name, Error **errp)
     }
 }
 
+void visit_type_uint8(Visitor *v, uint8_t *obj, const char *name, Error **errp)
+{
+    int64_t value;
+    if (!error_is_set(errp)) {
+        if (v->type_uint8) {
+            v->type_uint8(v, obj, name, errp);
+        } else {
+            value = *obj;
+            v->type_int(v, &value, name, errp);
+            if (value < 0 || value > UINT8_MAX) {
+                error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
+                          "uint8_t");
+                return;
+            }
+            *obj = value;
+        }
+    }
+}
+
+void visit_type_uint16(Visitor *v, uint16_t *obj, const char *name, Error **errp)
+{
+    int64_t value;
+    if (!error_is_set(errp)) {
+        if (v->type_uint16) {
+            v->type_uint16(v, obj, name, errp);
+        } else {
+            value = *obj;
+            v->type_int(v, &value, name, errp);
+            if (value < 0 || value > UINT16_MAX) {
+                error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
+                          "uint16_t");
+                return;
+            }
+            *obj = value;
+        }
+    }
+}
+
+void visit_type_uint32(Visitor *v, uint32_t *obj, const char *name, Error **errp)
+{
+    int64_t value;
+    if (!error_is_set(errp)) {
+        if (v->type_uint32) {
+            v->type_uint32(v, obj, name, errp);
+        } else {
+            value = *obj;
+            v->type_int(v, &value, name, errp);
+            if (value < 0 || value > UINT32_MAX) {
+                error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
+                          "uint32_t");
+                return;
+            }
+            *obj = value;
+        }
+    }
+}
+
+void visit_type_uint64(Visitor *v, uint64_t *obj, const char *name, Error **errp)
+{
+    int64_t value;
+    if (!error_is_set(errp)) {
+        if (v->type_uint64) {
+            v->type_uint64(v, obj, name, errp);
+        } else {
+            value = *obj;
+            v->type_int(v, &value, name, errp);
+            *obj = value;
+        }
+    }
+}
+
+void visit_type_int8(Visitor *v, int8_t *obj, const char *name, Error **errp)
+{
+    int64_t value;
+    if (!error_is_set(errp)) {
+        if (v->type_int8) {
+            v->type_int8(v, obj, name, errp);
+        } else {
+            value = *obj;
+            v->type_int(v, &value, name, errp);
+            if (value < INT8_MIN || value > INT8_MAX) {
+                error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
+                          "int8_t");
+                return;
+            }
+            *obj = value;
+        }
+    }
+}
+
+void visit_type_int16(Visitor *v, int16_t *obj, const char *name, Error **errp)
+{
+    int64_t value;
+    if (!error_is_set(errp)) {
+        if (v->type_int16) {
+            v->type_int16(v, obj, name, errp);
+        } else {
+            value = *obj;
+            v->type_int(v, &value, name, errp);
+            if (value < INT16_MIN || value > INT16_MAX) {
+                error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
+                          "int16_t");
+                return;
+            }
+            *obj = value;
+        }
+    }
+}
+
+void visit_type_int32(Visitor *v, int32_t *obj, const char *name, Error **errp)
+{
+    int64_t value;
+    if (!error_is_set(errp)) {
+        if (v->type_int32) {
+            v->type_int32(v, obj, name, errp);
+        } else {
+            value = *obj;
+            v->type_int(v, &value, name, errp);
+            if (value < INT32_MIN || value > INT32_MAX) {
+                error_set(errp, QERR_INVALID_PARAMETER_VALUE, name ? name : "null",
+                          "int32_t");
+                return;
+            }
+            *obj = value;
+        }
+    }
+}
+
+void visit_type_int64(Visitor *v, int64_t *obj, const char *name, Error **errp)
+{
+    if (!error_is_set(errp)) {
+        if (v->type_int64) {
+            v->type_int64(v, obj, name, errp);
+        } else {
+            v->type_int(v, obj, name, errp);
+        }
+    }
+}
+
 void visit_type_bool(Visitor *v, bool *obj, const char *name, Error **errp)
 {
     if (!error_is_set(errp)) {
diff --git a/qapi/qapi-visit-core.h b/qapi/qapi-visit-core.h
index e850746..a19d70c 100644
--- a/qapi/qapi-visit-core.h
+++ b/qapi/qapi-visit-core.h
@@ -52,6 +52,14 @@ struct Visitor
     void (*start_handle)(Visitor *v, void **obj, const char *kind,
                          const char *name, Error **errp);
     void (*end_handle)(Visitor *v, Error **errp);
+    void (*type_uint8)(Visitor *v, uint8_t *obj, const char *name, Error **errp);
+    void (*type_uint16)(Visitor *v, uint16_t *obj, const char *name, Error **errp);
+    void (*type_uint32)(Visitor *v, uint32_t *obj, const char *name, Error **errp);
+    void (*type_uint64)(Visitor *v, uint64_t *obj, const char *name, Error **errp);
+    void (*type_int8)(Visitor *v, int8_t *obj, const char *name, Error **errp);
+    void (*type_int16)(Visitor *v, int16_t *obj, const char *name, Error **errp);
+    void (*type_int32)(Visitor *v, int32_t *obj, const char *name, Error **errp);
+    void (*type_int64)(Visitor *v, int64_t *obj, const char *name, Error **errp);
 };
 
 void visit_start_handle(Visitor *v, void **obj, const char *kind,
@@ -69,6 +77,14 @@ void visit_end_optional(Visitor *v, Error **errp);
 void visit_type_enum(Visitor *v, int *obj, const char *strings[],
                      const char *kind, const char *name, Error **errp);
 void visit_type_int(Visitor *v, int64_t *obj, const char *name, Error **errp);
+void visit_type_uint8(Visitor *v, uint8_t *obj, const char *name, Error **errp);
+void visit_type_uint16(Visitor *v, uint16_t *obj, const char *name, Error **errp);
+void visit_type_uint32(Visitor *v, uint32_t *obj, const char *name, Error **errp);
+void visit_type_uint64(Visitor *v, uint64_t *obj, const char *name, Error **errp);
+void visit_type_int8(Visitor *v, int8_t *obj, const char *name, Error **errp);
+void visit_type_int16(Visitor *v, int16_t *obj, const char *name, Error **errp);
+void visit_type_int32(Visitor *v, int32_t *obj, const char *name, Error **errp);
+void visit_type_int64(Visitor *v, int64_t *obj, const char *name, Error **errp);
 void visit_type_bool(Visitor *v, bool *obj, const char *name, Error **errp);
 void visit_type_str(Visitor *v, char **obj, const char *name, Error **errp);
 void visit_type_number(Visitor *v, double *obj, const char *name, Error **errp);
diff --git a/qapi/string-output-visitor.c b/qapi/string-output-visitor.c
index 92b0305..34e525e 100644
--- a/qapi/string-output-visitor.c
+++ b/qapi/string-output-visitor.c
@@ -52,7 +52,7 @@ static void print_type_number(Visitor *v, double *obj, const char *name,
                               Error **errp)
 {
     StringOutputVisitor *sov = DO_UPCAST(StringOutputVisitor, visitor, v);
-    string_output_set(sov, g_strdup_printf("%g", *obj));
+    string_output_set(sov, g_strdup_printf("%f", *obj));
 }
 
 char *string_output_get_string(StringOutputVisitor *sov)
diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 388bc5c..0b61162 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -723,66 +723,32 @@ static void x86_cpuid_get_level(Object *obj, Visitor *v, void *opaque,
                                 const char *name, Error **errp)
 {
     X86CPU *cpu = X86_CPU(obj);
-    int64_t value;
 
-    value = cpu->env.cpuid_level;
-    /* TODO Use visit_type_uint32() once available */
-    visit_type_int(v, &value, name, errp);
+    visit_type_uint32(v, &cpu->env.cpuid_level, name, errp);
 }
 
 static void x86_cpuid_set_level(Object *obj, Visitor *v, void *opaque,
                                 const char *name, Error **errp)
 {
     X86CPU *cpu = X86_CPU(obj);
-    const int64_t min = 0;
-    const int64_t max = UINT32_MAX;
-    int64_t value;
-
-    /* TODO Use visit_type_uint32() once available */
-    visit_type_int(v, &value, name, errp);
-    if (error_is_set(errp)) {
-        return;
-    }
-    if (value < min || value > max) {
-        error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
-                  name ? name : "null", value, min, max);
-        return;
-    }
 
-    cpu->env.cpuid_level = value;
+    visit_type_uint32(v, &cpu->env.cpuid_level, name, errp);
 }
 
 static void x86_cpuid_get_xlevel(Object *obj, Visitor *v, void *opaque,
                                  const char *name, Error **errp)
 {
     X86CPU *cpu = X86_CPU(obj);
-    int64_t value;
 
-    value = cpu->env.cpuid_xlevel;
-    /* TODO Use visit_type_uint32() once available */
-    visit_type_int(v, &value, name, errp);
+    visit_type_uint32(v, &cpu->env.cpuid_xlevel, name, errp);
 }
 
 static void x86_cpuid_set_xlevel(Object *obj, Visitor *v, void *opaque,
                                  const char *name, Error **errp)
 {
     X86CPU *cpu = X86_CPU(obj);
-    const int64_t min = 0;
-    const int64_t max = UINT32_MAX;
-    int64_t value;
-
-    /* TODO Use visit_type_uint32() once available */
-    visit_type_int(v, &value, name, errp);
-    if (error_is_set(errp)) {
-        return;
-    }
-    if (value < min || value > max) {
-        error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
-                  name ? name : "null", value, min, max);
-        return;
-    }
 
-    cpu->env.cpuid_xlevel = value;
+    visit_type_uint32(v, &cpu->env.cpuid_xlevel, name, errp);
 }
 
 static char *x86_cpuid_get_vendor(Object *obj, Error **errp)
diff --git a/tests/Makefile b/tests/Makefile
index 2e754c3..d66ab19 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -13,6 +13,7 @@ check-unit-y += tests/test-qmp-commands$(EXESUF)
 check-unit-y += tests/test-string-input-visitor$(EXESUF)
 check-unit-y += tests/test-string-output-visitor$(EXESUF)
 check-unit-y += tests/test-coroutine$(EXESUF)
+check-unit-y += tests/test-visitor-serialization$(EXESUF)
 
 check-block-$(CONFIG_POSIX) += tests/qemu-iotests-quick.sh
 
@@ -31,7 +32,7 @@ test-obj-y = tests/check-qint.o tests/check-qstring.o tests/check-qdict.o \
 	tests/test-coroutine.o tests/test-string-output-visitor.o \
 	tests/test-string-input-visitor.o tests/test-qmp-output-visitor.o \
 	tests/test-qmp-input-visitor.o tests/test-qmp-input-strict.o \
-	tests/test-qmp-commands.o
+	tests/test-qmp-commands.o tests/test-visitor-serialization.o
 
 test-qapi-obj-y =  $(qobject-obj-y) $(qapi-obj-y) $(tools-obj-y)
 test-qapi-obj-y += tests/test-qapi-visit.o tests/test-qapi-types.o
@@ -64,6 +65,7 @@ tests/test-qmp-output-visitor$(EXESUF): tests/test-qmp-output-visitor.o $(test-q
 tests/test-qmp-input-visitor$(EXESUF): tests/test-qmp-input-visitor.o $(test-qapi-obj-y)
 tests/test-qmp-input-strict$(EXESUF): tests/test-qmp-input-strict.o $(test-qapi-obj-y)
 tests/test-qmp-commands$(EXESUF): tests/test-qmp-commands.o tests/test-qmp-marshal.o $(test-qapi-obj-y)
+tests/test-visitor-serialization$(EXESUF): tests/test-visitor-serialization.o $(test-qapi-obj-y)
 
 tests/rtc-test$(EXESUF): tests/rtc-test.o $(trace-obj-y)
 tests/m48t59-test$(EXESUF): tests/m48t59-test.o $(trace-obj-y)
diff --git a/tests/test-string-output-visitor.c b/tests/test-string-output-visitor.c
index 22909b8..608f14a 100644
--- a/tests/test-string-output-visitor.c
+++ b/tests/test-string-output-visitor.c
@@ -84,7 +84,7 @@ static void test_visitor_out_number(TestOutputVisitorData *data,
 
     str = string_output_get_string(data->sov);
     g_assert(str != NULL);
-    g_assert_cmpstr(str, ==, "3.14");
+    g_assert_cmpstr(str, ==, "3.140000");
     g_free(str);
 }
 
diff --git a/tests/test-visitor-serialization.c b/tests/test-visitor-serialization.c
new file mode 100644
index 0000000..b8ad16f
--- /dev/null
+++ b/tests/test-visitor-serialization.c
@@ -0,0 +1,784 @@
+/*
+ * Unit-tests for visitor-based serialization
+ *
+ * Copyright IBM, Corp. 2012
+ *
+ * Authors:
+ *  Michael Roth <mdroth@linux.vnet.ibm.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 <glib.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <float.h>
+#include "test-qapi-types.h"
+#include "test-qapi-visit.h"
+#include "qemu-objects.h"
+#include "qapi/qmp-input-visitor.h"
+#include "qapi/qmp-output-visitor.h"
+#include "qapi/string-input-visitor.h"
+#include "qapi/string-output-visitor.h"
+
+typedef struct PrimitiveType {
+    union {
+        const char *string;
+        bool boolean;
+        double number;
+        int64_t integer;
+        uint8_t u8;
+        uint16_t u16;
+        uint32_t u32;
+        uint64_t u64;
+        int8_t s8;
+        int16_t s16;
+        int32_t s32;
+        int64_t s64;
+        intmax_t max;
+    } value;
+    enum {
+        PTYPE_STRING = 0,
+        PTYPE_BOOLEAN,
+        PTYPE_NUMBER,
+        PTYPE_INTEGER,
+        PTYPE_U8,
+        PTYPE_U16,
+        PTYPE_U32,
+        PTYPE_U64,
+        PTYPE_S8,
+        PTYPE_S16,
+        PTYPE_S32,
+        PTYPE_S64,
+        PTYPE_EOL,
+    } type;
+    const char *description;
+} PrimitiveType;
+
+/* test helpers */
+
+static void visit_primitive_type(Visitor *v, void **native, Error **errp)
+{
+    PrimitiveType *pt = *native;
+    switch(pt->type) {
+    case PTYPE_STRING:
+        visit_type_str(v, (char **)&pt->value.string, NULL, errp);
+        break;
+    case PTYPE_BOOLEAN:
+        visit_type_bool(v, &pt->value.boolean, NULL, errp);
+        break;
+    case PTYPE_NUMBER:
+        visit_type_number(v, &pt->value.number, NULL, errp);
+        break;
+    case PTYPE_INTEGER:
+        visit_type_int(v, &pt->value.integer, NULL, errp);
+        break;
+    case PTYPE_U8:
+        visit_type_uint8(v, &pt->value.u8, NULL, errp);
+        break;
+    case PTYPE_U16:
+        visit_type_uint16(v, &pt->value.u16, NULL, errp);
+        break;
+    case PTYPE_U32:
+        visit_type_uint32(v, &pt->value.u32, NULL, errp);
+        break;
+    case PTYPE_U64:
+        visit_type_uint64(v, &pt->value.u64, NULL, errp);
+        break;
+    case PTYPE_S8:
+        visit_type_int8(v, &pt->value.s8, NULL, errp);
+        break;
+    case PTYPE_S16:
+        visit_type_int16(v, &pt->value.s16, NULL, errp);
+        break;
+    case PTYPE_S32:
+        visit_type_int32(v, &pt->value.s32, NULL, errp);
+        break;
+    case PTYPE_S64:
+        visit_type_int64(v, &pt->value.s64, NULL, errp);
+        break;
+    case PTYPE_EOL:
+        g_assert(false);
+    }
+}
+
+typedef struct TestStruct
+{
+    int64_t integer;
+    bool boolean;
+    char *string;
+} TestStruct;
+
+static void visit_type_TestStruct(Visitor *v, TestStruct **obj,
+                                  const char *name, Error **errp)
+{
+    visit_start_struct(v, (void **)obj, NULL, name, sizeof(TestStruct), errp);
+
+    visit_type_int(v, &(*obj)->integer, "integer", errp);
+    visit_type_bool(v, &(*obj)->boolean, "boolean", errp);
+    visit_type_str(v, &(*obj)->string, "string", errp);
+
+    visit_end_struct(v, errp);
+}
+
+static TestStruct *struct_create(void)
+{
+    TestStruct *ts = g_malloc0(sizeof(*ts));
+    ts->integer = -42;
+    ts->boolean = true;
+    ts->string = strdup("test string");
+    return ts;
+}
+
+static void struct_compare(TestStruct *ts1, TestStruct *ts2)
+{
+    g_assert(ts1);
+    g_assert(ts2);
+    g_assert_cmpint(ts1->integer, ==, ts2->integer);
+    g_assert(ts1->boolean == ts2->boolean);
+    g_assert_cmpstr(ts1->string, ==, ts2->string);
+}
+
+static void struct_cleanup(TestStruct *ts)
+{
+    g_free(ts->string);
+    g_free(ts);
+}
+
+static void visit_struct(Visitor *v, void **native, Error **errp)
+{
+    visit_type_TestStruct(v, (TestStruct **)native, NULL, errp);
+}
+
+static UserDefNested *nested_struct_create(void)
+{
+    UserDefNested *udnp = g_malloc0(sizeof(*udnp));
+    udnp->string0 = strdup("test_string0");
+    udnp->dict1.string1 = strdup("test_string1");
+    udnp->dict1.dict2.userdef1 = g_malloc0(sizeof(UserDefOne));
+    udnp->dict1.dict2.userdef1->integer = 42;
+    udnp->dict1.dict2.userdef1->string = strdup("test_string");
+    udnp->dict1.dict2.string2 = strdup("test_string2");
+    udnp->dict1.has_dict3 = true;
+    udnp->dict1.dict3.userdef2 = g_malloc0(sizeof(UserDefOne));
+    udnp->dict1.dict3.userdef2->integer = 43;
+    udnp->dict1.dict3.userdef2->string = strdup("test_string");
+    udnp->dict1.dict3.string3 = strdup("test_string3");
+    return udnp;
+}
+
+static void nested_struct_compare(UserDefNested *udnp1, UserDefNested *udnp2)
+{
+    g_assert(udnp1);
+    g_assert(udnp2);
+    g_assert_cmpstr(udnp1->string0, ==, udnp2->string0);
+    g_assert_cmpstr(udnp1->dict1.string1, ==, udnp2->dict1.string1);
+    g_assert_cmpint(udnp1->dict1.dict2.userdef1->integer, ==,
+                    udnp2->dict1.dict2.userdef1->integer);
+    g_assert_cmpstr(udnp1->dict1.dict2.userdef1->string, ==,
+                    udnp2->dict1.dict2.userdef1->string);
+    g_assert_cmpstr(udnp1->dict1.dict2.string2, ==, udnp2->dict1.dict2.string2);
+    g_assert(udnp1->dict1.has_dict3 == udnp2->dict1.has_dict3);
+    g_assert_cmpint(udnp1->dict1.dict3.userdef2->integer, ==,
+                    udnp2->dict1.dict3.userdef2->integer);
+    g_assert_cmpstr(udnp1->dict1.dict3.userdef2->string, ==,
+                    udnp2->dict1.dict3.userdef2->string);
+    g_assert_cmpstr(udnp1->dict1.dict3.string3, ==, udnp2->dict1.dict3.string3);
+}
+
+static void nested_struct_cleanup(UserDefNested *udnp)
+{
+    qapi_free_UserDefNested(udnp);
+}
+
+static void visit_nested_struct(Visitor *v, void **native, Error **errp)
+{
+    visit_type_UserDefNested(v, (UserDefNested **)native, NULL, errp);
+}
+
+static void visit_nested_struct_list(Visitor *v, void **native, Error **errp)
+{
+    visit_type_UserDefNestedList(v, (UserDefNestedList **)native, NULL, errp);
+}
+
+/* test cases */
+
+typedef void (*VisitorFunc)(Visitor *v, void **native, Error **errp);
+
+typedef enum VisitorCapabilities {
+    VCAP_PRIMITIVES = 1,
+    VCAP_STRUCTURES = 2,
+    VCAP_LISTS = 4,
+} VisitorCapabilities;
+
+typedef struct SerializeOps {
+    void (*serialize)(void *native_in, void **datap,
+                      VisitorFunc visit, Error **errp);
+    void (*deserialize)(void **native_out, void *datap,
+                            VisitorFunc visit, Error **errp);
+    void (*cleanup)(void *datap);
+    const char *type;
+    VisitorCapabilities caps;
+} SerializeOps;
+
+typedef struct TestArgs {
+    const SerializeOps *ops;
+    void *test_data;
+} TestArgs;
+
+#define FLOAT_STRING_PRECISION 6 /* corresponding to n in %.nf formatting */
+static gsize calc_float_string_storage(double value)
+{
+    int whole_value = value;
+    gsize i = 0;
+    do {
+        i++;
+    } while (whole_value /= 10);
+    return i + 2 + FLOAT_STRING_PRECISION;
+}
+
+static void test_primitives(gconstpointer opaque)
+{
+    TestArgs *args = (TestArgs *) opaque;
+    const SerializeOps *ops = args->ops;
+    PrimitiveType *pt = args->test_data;
+    PrimitiveType *pt_copy = g_malloc0(sizeof(*pt_copy));
+    Error *err = NULL;
+    void *serialize_data;
+    char *double1, *double2;
+
+    pt_copy->type = pt->type;
+    ops->serialize(pt, &serialize_data, visit_primitive_type, &err);
+    ops->deserialize((void **)&pt_copy, serialize_data, visit_primitive_type, &err);
+
+    g_assert(err == NULL);
+    g_assert(pt_copy != NULL);
+    if (pt->type == PTYPE_STRING) {
+        g_assert_cmpstr(pt->value.string, ==, pt_copy->value.string);
+    } else if (pt->type == PTYPE_NUMBER) {
+        /* we serialize with %f for our reference visitors, so rather than fuzzy
+         * floating math to test "equality", just compare the formatted values
+         */
+        double1 = g_malloc0(calc_float_string_storage(pt->value.number));
+        double2 = g_malloc0(calc_float_string_storage(pt_copy->value.number));
+        g_assert_cmpstr(double1, ==, double2);
+        g_free(double1);
+        g_free(double2);
+    } else if (pt->type == PTYPE_BOOLEAN) {
+        g_assert_cmpint(!!pt->value.max, ==, !!pt->value.max);
+    } else {
+        g_assert_cmpint(pt->value.max, ==, pt_copy->value.max);
+    }
+
+    ops->cleanup(serialize_data);
+    g_free(args);
+}
+
+static void test_struct(gconstpointer opaque)
+{
+    TestArgs *args = (TestArgs *) opaque;
+    const SerializeOps *ops = args->ops;
+    TestStruct *ts = struct_create();
+    TestStruct *ts_copy = NULL;
+    Error *err = NULL;
+    void *serialize_data;
+
+    ops->serialize(ts, &serialize_data, visit_struct, &err);
+    ops->deserialize((void **)&ts_copy, serialize_data, visit_struct, &err); 
+
+    g_assert(err == NULL);
+    struct_compare(ts, ts_copy);
+
+    struct_cleanup(ts);
+    struct_cleanup(ts_copy);
+
+    ops->cleanup(serialize_data);
+    g_free(args);
+}
+
+static void test_nested_struct(gconstpointer opaque)
+{
+    TestArgs *args = (TestArgs *) opaque;
+    const SerializeOps *ops = args->ops;
+    UserDefNested *udnp = nested_struct_create();
+    UserDefNested *udnp_copy = NULL;
+    Error *err = NULL;
+    void *serialize_data;
+    
+    ops->serialize(udnp, &serialize_data, visit_nested_struct, &err);
+    ops->deserialize((void **)&udnp_copy, serialize_data, visit_nested_struct, &err); 
+
+    g_assert(err == NULL);
+    nested_struct_compare(udnp, udnp_copy);
+
+    nested_struct_cleanup(udnp);
+    nested_struct_cleanup(udnp_copy);
+
+    ops->cleanup(serialize_data);
+    g_free(args);
+}
+
+static void test_nested_struct_list(gconstpointer opaque)
+{
+    TestArgs *args = (TestArgs *) opaque;
+    const SerializeOps *ops = args->ops;
+    UserDefNestedList *listp = NULL, *tmp, *tmp_copy, *listp_copy = NULL;
+    Error *err = NULL;
+    void *serialize_data;
+    int i = 0;
+
+    for (i = 0; i < 8; i++) {
+        tmp = g_malloc0(sizeof(UserDefNestedList));
+        tmp->value = nested_struct_create();
+        tmp->next = listp;
+        listp = tmp;
+    }
+    
+    ops->serialize(listp, &serialize_data, visit_nested_struct_list, &err);
+    ops->deserialize((void **)&listp_copy, serialize_data,
+                     visit_nested_struct_list, &err); 
+
+    g_assert(err == NULL);
+
+    tmp = listp;
+    tmp_copy = listp_copy;
+    while (listp_copy) {
+        g_assert(listp);
+        nested_struct_compare(listp->value, listp_copy->value);
+        listp = listp->next;
+        listp_copy = listp_copy->next;
+    }
+
+    qapi_free_UserDefNestedList(tmp);
+    qapi_free_UserDefNestedList(tmp_copy);
+
+    ops->cleanup(serialize_data);
+    g_free(args);
+}
+
+PrimitiveType pt_values[] = {
+    /* string tests */
+    {
+        .description = "string_empty",
+        .type = PTYPE_STRING,
+        .value.string = "",
+    },
+    {
+        .description = "string_whitespace",
+        .type = PTYPE_STRING,
+        .value.string = "a b  c\td",
+    },
+    {
+        .description = "string_newlines",
+        .type = PTYPE_STRING,
+        .value.string = "a\nb\n",
+    },
+    {
+        .description = "string_commas",
+        .type = PTYPE_STRING,
+        .value.string = "a,b, c,d",
+    },
+    {
+        .description = "string_single_quoted",
+        .type = PTYPE_STRING,
+        .value.string = "'a b',cd",
+    },
+    {
+        .description = "string_double_quoted",
+        .type = PTYPE_STRING,
+        .value.string = "\"a b\",cd",
+    },
+    /* boolean tests */
+    {
+        .description = "boolean_true1",
+        .type = PTYPE_BOOLEAN,
+        .value.boolean = true,
+    },
+    {
+        .description = "boolean_true2",
+        .type = PTYPE_BOOLEAN,
+        .value.boolean = 8,
+    },
+    {
+        .description = "boolean_true3",
+        .type = PTYPE_BOOLEAN,
+        .value.boolean = -1,
+    },
+    {
+        .description = "boolean_false1",
+        .type = PTYPE_BOOLEAN,
+        .value.boolean = false,
+    },
+    {
+        .description = "boolean_false2",
+        .type = PTYPE_BOOLEAN,
+        .value.boolean = 0,
+    },
+    /* number tests (double) */
+    /* note: we format these to %.6f before comparing, since that's how
+     * we serialize them and it doesn't make sense to check precision
+     * beyond that.
+     */
+    {
+        .description = "number_sanity1",
+        .type = PTYPE_NUMBER,
+        .value.number = -1,
+    },
+    {
+        .description = "number_sanity2",
+        .type = PTYPE_NUMBER,
+        .value.number = 3.14159265,
+    },
+    {
+        .description = "number_min",
+        .type = PTYPE_NUMBER,
+        .value.number = DBL_MIN,
+    },
+    {
+        .description = "number_max",
+        .type = PTYPE_NUMBER,
+        .value.number = DBL_MAX,
+    },
+    /* integer tests (int64) */
+    {
+        .description = "integer_sanity1",
+        .type = PTYPE_INTEGER,
+        .value.integer = -1,
+    },
+    {
+        .description = "integer_sanity2",
+        .type = PTYPE_INTEGER,
+        .value.integer = INT64_MAX / 2 + 1,
+    },
+    {
+        .description = "integer_min",
+        .type = PTYPE_INTEGER,
+        .value.integer = INT64_MIN,
+    },
+    {
+        .description = "integer_max",
+        .type = PTYPE_INTEGER,
+        .value.integer = INT64_MAX,
+    },
+    /* uint8 tests */
+    {
+        .description = "uint8_sanity1",
+        .type = PTYPE_U8,
+        .value.u8 = 1,
+    },
+    {
+        .description = "uint8_sanity2",
+        .type = PTYPE_U8,
+        .value.u8 = UINT8_MAX / 2 + 1,
+    },
+    {
+        .description = "uint8_min",
+        .type = PTYPE_U8,
+        .value.u8 = 0,
+    },
+    {
+        .description = "uint8_max",
+        .type = PTYPE_U8,
+        .value.u8 = UINT8_MAX,
+    },
+    /* uint16 tests */
+    {
+        .description = "uint16_sanity1",
+        .type = PTYPE_U16,
+        .value.u16 = 1,
+    },
+    {
+        .description = "uint16_sanity2",
+        .type = PTYPE_U16,
+        .value.u16 = UINT16_MAX / 2 + 1,
+    },
+    {
+        .description = "uint16_min",
+        .type = PTYPE_U16,
+        .value.u16 = 0,
+    },
+    {
+        .description = "uint16_max",
+        .type = PTYPE_U16,
+        .value.u16 = UINT16_MAX,
+    },
+    /* uint32 tests */
+    {
+        .description = "uint32_sanity1",
+        .type = PTYPE_U32,
+        .value.u32 = 1,
+    },
+    {
+        .description = "uint32_sanity2",
+        .type = PTYPE_U32,
+        .value.u32 = UINT32_MAX / 2 + 1,
+    },
+    {
+        .description = "uint32_min",
+        .type = PTYPE_U32,
+        .value.u32 = 0,
+    },
+    {
+        .description = "uint32_max",
+        .type = PTYPE_U32,
+        .value.u32 = UINT32_MAX,
+    },
+    /* uint64 tests */
+    {
+        .description = "uint64_sanity1",
+        .type = PTYPE_U64,
+        .value.u64 = 1,
+    },
+    {
+        .description = "uint64_sanity2",
+        .type = PTYPE_U64,
+        .value.u64 = UINT64_MAX / 2 + 1,
+    },
+    {
+        .description = "uint64_min",
+        .type = PTYPE_U64,
+        .value.u64 = 0,
+    },
+    {
+        .description = "uint64_max",
+        .type = PTYPE_U64,
+        .value.u64 = UINT64_MAX,
+    },
+    /* int8 tests */
+    {
+        .description = "int8_sanity1",
+        .type = PTYPE_S8,
+        .value.s8 = -1,
+    },
+    {
+        .description = "int8_sanity2",
+        .type = PTYPE_S8,
+        .value.s8 = INT8_MAX / 2 + 1,
+    },
+    {
+        .description = "int8_min",
+        .type = PTYPE_S8,
+        .value.s8 = INT8_MIN,
+    },
+    {
+        .description = "int8_max",
+        .type = PTYPE_S8,
+        .value.s8 = INT8_MAX,
+    },
+    /* int16 tests */
+    {
+        .description = "int16_sanity1",
+        .type = PTYPE_S16,
+        .value.s16 = -1,
+    },
+    {
+        .description = "int16_sanity2",
+        .type = PTYPE_S16,
+        .value.s16 = INT16_MAX / 2 + 1,
+    },
+    {
+        .description = "int16_min",
+        .type = PTYPE_S16,
+        .value.s16 = INT16_MIN,
+    },
+    {
+        .description = "int16_max",
+        .type = PTYPE_S16,
+        .value.s16 = INT16_MAX,
+    },
+    /* int32 tests */
+    {
+        .description = "int32_sanity1",
+        .type = PTYPE_S32,
+        .value.s32 = -1,
+    },
+    {
+        .description = "int32_sanity2",
+        .type = PTYPE_S32,
+        .value.s32 = INT32_MAX / 2 + 1,
+    },
+    {
+        .description = "int32_min",
+        .type = PTYPE_S32,
+        .value.s32 = INT32_MIN,
+    },
+    {
+        .description = "int32_max",
+        .type = PTYPE_S32,
+        .value.s32 = INT32_MAX,
+    },
+    /* int64 tests */
+    {
+        .description = "int64_sanity1",
+        .type = PTYPE_S64,
+        .value.s64 = -1,
+    },
+    {
+        .description = "int64_sanity2",
+        .type = PTYPE_S64,
+        .value.s64 = INT64_MAX / 2 + 1,
+    },
+    {
+        .description = "int64_min",
+        .type = PTYPE_S64,
+        .value.s64 = INT64_MIN,
+    },
+    {
+        .description = "int64_max",
+        .type = PTYPE_S64,
+        .value.s64 = INT64_MAX,
+    },
+    { .type = PTYPE_EOL }
+};
+
+/* visitor-specific op implementations */
+
+typedef struct QmpSerializeData {
+    QmpOutputVisitor *qov;
+    QmpInputVisitor *qiv;
+} QmpSerializeData;
+
+static void qmp_serialize(void *native_in, void **datap,
+                          VisitorFunc visit, Error **errp)
+{
+    QmpSerializeData *d = g_malloc0(sizeof(*d));
+
+    d->qov = qmp_output_visitor_new();
+    visit(qmp_output_get_visitor(d->qov), &native_in, errp);
+    *datap = d;
+}
+
+static void qmp_deserialize(void **native_out, void *datap,
+                            VisitorFunc visit, Error **errp)
+{
+    QmpSerializeData *d = datap;
+    QString *output_json = qobject_to_json(qmp_output_get_qobject(d->qov));
+    QObject *obj = qobject_from_json(qstring_get_str(output_json));
+
+    QDECREF(output_json);
+    d->qiv = qmp_input_visitor_new(obj);
+    visit(qmp_input_get_visitor(d->qiv), native_out, errp);
+}
+
+static void qmp_cleanup(void *datap)
+{
+    QmpSerializeData *d = datap;
+    qmp_output_visitor_cleanup(d->qov);
+    qmp_input_visitor_cleanup(d->qiv);
+}
+
+typedef struct StringSerializeData {
+    StringOutputVisitor *sov;
+    StringInputVisitor *siv;
+} StringSerializeData;
+
+static void string_serialize(void *native_in, void **datap,
+                             VisitorFunc visit, Error **errp)
+{
+    StringSerializeData *d = g_malloc0(sizeof(*d));
+
+    d->sov = string_output_visitor_new();
+    visit(string_output_get_visitor(d->sov), &native_in, errp);
+    *datap = d;
+}
+
+static void string_deserialize(void **native_out, void *datap,
+                               VisitorFunc visit, Error **errp)
+{
+    StringSerializeData *d = datap;
+
+    d->siv = string_input_visitor_new(string_output_get_string(d->sov));
+    visit(string_input_get_visitor(d->siv), native_out, errp);
+}
+
+static void string_cleanup(void *datap)
+{
+    StringSerializeData *d = datap;
+    string_output_visitor_cleanup(d->sov);
+    string_input_visitor_cleanup(d->siv);
+}
+
+/* visitor registration, test harness */
+
+/* note: to function interchangeably as a serialization mechanism your
+ * visitor test implementation should pass the test cases for all visitor
+ * capabilities: primitives, structures, and lists
+ */
+static const SerializeOps visitors[] = {
+    {
+        .type = "QMP",
+        .serialize = qmp_serialize,
+        .deserialize = qmp_deserialize,
+        .cleanup = qmp_cleanup,
+        .caps = VCAP_PRIMITIVES | VCAP_STRUCTURES | VCAP_LISTS
+    },
+    {
+        .type = "String",
+        .serialize = string_serialize,
+        .deserialize = string_deserialize,
+        .cleanup = string_cleanup,
+        .caps = VCAP_PRIMITIVES
+    },
+    { NULL }
+};
+
+static void add_visitor_type(const SerializeOps *ops)
+{
+    char testname_prefix[128];
+    char testname[128];
+    TestArgs *args;
+    int i = 0;
+
+    sprintf(testname_prefix, "/visitor/serialization/%s", ops->type);
+
+    if (ops->caps & VCAP_PRIMITIVES) {
+        while (pt_values[i].type != PTYPE_EOL) {
+            sprintf(testname, "%s/primitives/%s", testname_prefix,
+                    pt_values[i].description);
+            args = g_malloc0(sizeof(*args));
+            args->ops = ops;
+            args->test_data = &pt_values[i];
+            g_test_add_data_func(testname, args, test_primitives);
+            i++;
+        }
+    }
+
+    if (ops->caps & VCAP_STRUCTURES) {
+        sprintf(testname, "%s/struct", testname_prefix);
+        args = g_malloc0(sizeof(*args));
+        args->ops = ops;
+        args->test_data = NULL;
+        g_test_add_data_func(testname, args, test_struct);
+
+        sprintf(testname, "%s/nested_struct", testname_prefix);
+        args = g_malloc0(sizeof(*args));
+        args->ops = ops;
+        args->test_data = NULL;
+        g_test_add_data_func(testname, args, test_nested_struct);
+    }
+
+    if (ops->caps & VCAP_LISTS) {
+        sprintf(testname, "%s/nested_struct_list", testname_prefix);
+        args = g_malloc0(sizeof(*args));
+        args->ops = ops;
+        args->test_data = NULL;
+        g_test_add_data_func(testname, args, test_nested_struct_list);
+    }
+}
+
+int main(int argc, char **argv)
+{
+    int i = 0;
+
+    g_test_init(&argc, &argv, NULL);
+
+    while (visitors[i].type != NULL) {
+        add_visitor_type(&visitors[i]);
+        i++;
+    }
+
+    g_test_run();
+
+    return 0;
+}