diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index 50e1160a0..b1a3f1542 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,7 @@
+Fri Jan 12 00:34:31 2001  Christopher Faylor <cgf@cygnus.com>
+
+	* libc/include/sys/signal.h: Add some SA_* defines for Cygwin.
+
 Thu Jan 11 20:42:06  2001  Earnie Boyd  <earnie_boyd@yahoo.com>
 
 	* libc/include/sys/features.h: __CYGWIN__ preferred over __CYGWIN32__
diff --git a/newlib/libc/include/sys/signal.h b/newlib/libc/include/sys/signal.h
index 58d84de11..496fc58a9 100644
--- a/newlib/libc/include/sys/signal.h
+++ b/newlib/libc/include/sys/signal.h
@@ -113,6 +113,13 @@ struct sigaction
 
 #define SA_NOCLDSTOP 1  /* only value supported now for sa_flags */
 
+#ifdef __CYGWIN__
+# define SA_RESTART   0x10000000 /* Restart syscall on signal return.  */
+# define SA_NODEFER   0x40000000 /* Don't automatically block the signal when
+                                    its handler is being executed.  */
+# define SA_RESETHAND 0x80000000 /* Reset to SIG_DFL on entry to handler.  */
+#endif
+
 #endif /* defined(__rtems__) */
 
 #define SIG_SETMASK 0	/* set mask with sigprocmask() */