1 files changed, 31 insertions, 11 deletions
diff --git a/src/mesa/main/imports.c b/src/mesa/main/imports.c
index ed809acbe2..890d1a4e32 100644
--- a/src/mesa/main/imports.c
+++ b/src/mesa/main/imports.c
@@ -576,6 +576,35 @@ _mesa_ffs(int i)
 
 
 /**
+ * Find position of first bit set in given value.
+ * XXX Warning: this function can only be used on 64-bit systems!
+ * \return  position of least-significant bit set, starting at 1, return zero
+ *          if no bits set.
+ */
+int
+_mesa_ffsll(long long val)
+{
+#ifdef ffsll
+   return ffsll(val);
+#else
+   int bit;
+
+   assert(sizeof(val) == 8);
+
+   bit = ffs(val);
+   if (bit != 0)
+      return bit;
+
+   bit = ffs(val >> 32);
+   if (bit != 0)
+      return 32 + bit;
+
+   return 0;
+#endif
+}
+
+
+/**
  * Return number of bits set in given GLuint.
  */
 unsigned int
@@ -1176,16 +1205,6 @@ default_fprintf(__GLcontext *gc, void *stream, const char *fmt, ...)
    return r;
 }
 
-/**
- * \todo this really is driver-specific and can't be here 
- */
-static __GLdrawablePrivate *
-default_GetDrawablePrivate(__GLcontext *gc)
-{
-   (void) gc;
-   return NULL;
-}
-
 /*@}*/
 
 
@@ -1222,6 +1241,7 @@ _mesa_init_default_imports(__GLimports *imports, void *driverCtx)
    imports->fopen = default_fopen;
    imports->fclose = default_fclose;
    imports->fprintf = default_fprintf;
-   imports->getDrawablePrivate = default_GetDrawablePrivate;
+   imports->getDrawablePrivate = NULL; /* driver-specific */
+   imports->getReadablePrivate = NULL; /* driver-specific */
    imports->other = driverCtx;
 }