diff --git a/libgloss/ChangeLog b/libgloss/ChangeLog
index 82bd48efa..c559cadf4 100644
--- a/libgloss/ChangeLog
+++ b/libgloss/ChangeLog
@@ -1,3 +1,7 @@
+2007-11-06  Dave Brolley  <brolley@redhat.com>
+ 
+	* syscall.h (SYS_reconfig): New macro.
+
 2007-10-11  Ulrich Weigand  <uweigand@de.ibm.com>
 
 	* spu/crt0.S: Fix so element one of register one is correctly set
diff --git a/libgloss/syscall.h b/libgloss/syscall.h
index 38bedaae6..3db9db142 100644
--- a/libgloss/syscall.h
+++ b/libgloss/syscall.h
@@ -51,4 +51,8 @@
 #define SYS_argc	 22
 #define SYS_argnlen	 23
 #define SYS_argn	 24
+
+/* SID simulator runtime reconfiguration. */
+#define SYS_reconfig	 25
+
 #endif