diff --git a/sdk/xtdk/kefuncs.h b/sdk/xtdk/kefuncs.h
index a55d4b7..ddf5c5a 100644
--- a/sdk/xtdk/kefuncs.h
+++ b/sdk/xtdk/kefuncs.h
@@ -35,6 +35,17 @@ VOID
 KeInitializeTimerEx(OUT PKTIMER Timer,
                     IN KTIMER_TYPE Type);
 
+XTAPI
+LONG
+KeReadSemaphoreState(IN PKSEMAPHORE Semaphore);
+
+XTAPI
+LONG
+KeReleaseSemaphore(IN PKSEMAPHORE Semaphore,
+                   IN KPRIORITY Increment,
+                   IN LONG Adjustment,
+                   IN BOOLEAN Wait);
+
 XTAPI
 VOID
 KeStartXtSystem(IN PKERNEL_INITIALIZATION_BLOCK Parameters);
diff --git a/xtoskrnl/ke/semphore.c b/xtoskrnl/ke/semphore.c
index 02aff0d..2e95ce9 100644
--- a/xtoskrnl/ke/semphore.c
+++ b/xtoskrnl/ke/semphore.c
@@ -39,3 +39,51 @@ KeInitializeSemaphore(IN PKSEMAPHORE Semaphore,
     /* Initialize semaphore wait list */
     RtlInitializeListHead(&Semaphore->Header.WaitListHead);
 }
+
+/**
+ * Reads semaphore's current signal state.
+ *
+ * @param Semaphore
+ *        Supplies a pointer to a semaphore object.
+ *
+ * @return This routine returns the current signal state of the semaphore.
+ *
+ * @since XT 1.0
+ */
+XTAPI
+LONG
+KeReadSemaphoreState(IN PKSEMAPHORE Semaphore)
+{
+    /* Return semaphore's signal state */
+    return Semaphore->Header.SignalState;
+}
+
+/**
+ * Releases a semaphore.
+ *
+ * @param Semaphore
+ *        Supplies a pointer to a semaphore object.
+ *
+ * @param Increment
+ *        Specifies the priority increment value of the semaphore.
+ *
+ * @param Adjustment
+ *        Specifies adjustment value added to the semaphore's initial count value.
+ *
+ * @param Wait
+ *        Determines whether release of the semaphore will be followed by a kernel wait routine call or not.
+ *
+ * @return This routine returns a previous signal state of the semaphore.
+ *
+ * @since NT 3.5
+ */
+XTAPI
+LONG
+KeReleaseSemaphore(IN PKSEMAPHORE Semaphore,
+                   IN KPRIORITY Increment,
+                   IN LONG Adjustment,
+                   IN BOOLEAN Wait)
+{
+    UNIMPLEMENTED;
+    return 0;
+}
diff --git a/xtoskrnl/xtoskrnl.spec b/xtoskrnl/xtoskrnl.spec
index c45b4e6..1655597 100644
--- a/xtoskrnl/xtoskrnl.spec
+++ b/xtoskrnl/xtoskrnl.spec
@@ -8,6 +8,8 @@
 @ stdcall KeInitializeSpinLock(ptr)
 @ stdcall KeInitializeTimer(ptr)
 @ stdcall KeInitializeTimerEx(ptr long)
+@ stdcall KeReadSemaphoreState(ptr)
+@ stdcall KeReleaseSemaphore(ptr long long long)
 @ stdcall RtlCompareMemory(ptr ptr long)
 @ stdcall RtlCopyMemory(ptr ptr long)
 @ stdcall RtlFillMemory(ptr long long)