Index: uspace/lib/c/include/bitops.h
===================================================================
--- uspace/lib/c/include/bitops.h	(revision 5cbccd4acbdbb068412b7105503d09315968f2a2)
+++ uspace/lib/c/include/bitops.h	(revision 91ca111603271f1e8653a31f4d8a6120eed9f0cc)
@@ -54,4 +54,8 @@
 #define BIT_RANGE_EXTRACT(type, hi, lo, value) \
     (((value) >> (lo)) & BIT_RRANGE(type, (hi) - (lo) + 1))
+
+/** Insert @a value between bits @a hi .. @a lo. */
+#define BIT_RANGE_INSERT(type, hi, lo, value) \
+    (((value) & BIT_RRANGE(type, (hi) - (lo) + 1)) << (lo))
 
 /** Return position of first non-zero bit from left (i.e. [log_2(arg)]).