it allows to find bit static property corresponding to a specific bit
in specified field.
Signed-off-by: Igor Mammedov <imamm...@redhat.com>
---
* it will be used by next commit to print cpuid feature names for
unavailable feature bits.
---
hw/qdev-properties.h | 8 ++++++++
qom/qdev-properties.c | 15 +++++++++++++++
2 files changed, 23 insertions(+)
diff --git a/hw/qdev-properties.h b/hw/qdev-properties.h
index 19b55c0..88b6782 100644
--- a/hw/qdev-properties.h
+++ b/hw/qdev-properties.h
@@ -144,4 +144,12 @@ const Property *qdev_prop_find(const DeviceClass *dc,
const char *name);
for ((_var) = (_class); \
(_var) != DEVICE_CLASS(object_class_by_name(TYPE_DEVICE)); \
(_var) = DEVICE_CLASS(object_class_get_parent(OBJECT_CLASS((_var)))))
+
+const Property *qdev_prop_find_bit(const DeviceClass *dc, const int offset,
+ const uint8_t bitnr);
+#define QDEV_FIND_PROP_FROM_BIT(_class, _state, _field, _bitnr) \
+ qdev_prop_find_bit(_class, \
+ offsetof(_state, _field) + \
+ type_check(uint32_t, typeof_field(_state, _field)), \
+ _bitnr)
#endif
diff --git a/qom/qdev-properties.c b/qom/qdev-properties.c
index 3d3eefa..2e589c6 100644
--- a/qom/qdev-properties.c
+++ b/qom/qdev-properties.c
@@ -787,6 +787,21 @@ const Property *qdev_prop_find(const DeviceClass *dc,
const char *name)
return NULL;
}
+const Property *qdev_prop_find_bit(const DeviceClass *dc, const int offset,
+ const uint8_t bitnr)
+{
+ const Property *prop;
+
+ QDEV_CLASS_FOREACH(dc, dc) {
+ QDEV_PROP_FOREACH(prop, dc) {
+ if (prop->offset == offset && prop->bitnr == bitnr) {
+ return prop;
+ }
+ }
+ }
+ return NULL;
+}
+
void error_set_from_qdev_prop_error(Error **errp, int ret, DeviceState *dev,
Property *prop, const char *value)
{
--
1.7.11.7
