diff --git a/newlib/libc/sys/rtems/include/sys/mman.h b/newlib/libc/sys/rtems/include/sys/mman.h
index f74f47360..4ac4f34c6 100644
--- a/newlib/libc/sys/rtems/include/sys/mman.h
+++ b/newlib/libc/sys/rtems/include/sys/mman.h
@@ -29,7 +29,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)mman.h	8.2 (Berkeley) 1/9/95
- * $FreeBSD: head/sys/sys/mman.h 326023 2017-11-20 19:43:44Z pfg $
+ * $FreeBSD: head/sys/sys/mman.h 349240 2019-06-20 18:24:16Z brooks $
  */
 
 #ifndef _SYS_MMAN_H_
@@ -55,6 +55,14 @@
 #define	PROT_READ	0x01	/* pages can be read */
 #define	PROT_WRITE	0x02	/* pages can be written */
 #define	PROT_EXEC	0x04	/* pages can be executed */
+#if __BSD_VISIBLE
+#define	_PROT_ALL	(PROT_READ | PROT_WRITE | PROT_EXEC)
+#define	PROT_EXTRACT(prot)	((prot) & _PROT_ALL)
+
+#define	_PROT_MAX_SHIFT	16
+#define	PROT_MAX(prot)		((prot) << _PROT_MAX_SHIFT)
+#define	PROT_MAX_EXTRACT(prot)	(((prot) >> _PROT_MAX_SHIFT) & _PROT_ALL)
+#endif
 
 /*
  * Flags contain sharing type and options.