From 9be9d2d2a28526f98bfe6807076d4920b91edb73 Mon Sep 17 00:00:00 2001
From: Alex Hornung <ahornung@gmail.com>
Date: Sun, 14 Mar 2010 09:32:00 +0000
Subject: [PATCH] fetch.9 - document casuword

---
 share/man/man9/Makefile |  1 +
 share/man/man9/fetch.9  | 17 ++++++++++++++++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/share/man/man9/Makefile b/share/man/man9/Makefile
index 37779d9d7b..9ef34ea147 100644
--- a/share/man/man9/Makefile
+++ b/share/man/man9/Makefile
@@ -389,6 +389,7 @@ MLINKS+=EVENTHANDLER.9 EVENTHANDLER_DECLARE.9 \
 	EVENTHANDLER.9 EVENTHANDLER_REGISTER.9 \
 	EVENTHANDLER.9 eventhandler_register.9
 MLINKS+=fetch.9 fubyte.9 \
+	fetch.9 casuword.9 \
 	fetch.9 fusword.9 \
 	fetch.9 fuword.9
 MLINKS+=firmware.9 firmware_image_load.9 \
diff --git a/share/man/man9/fetch.9 b/share/man/man9/fetch.9
index bae7959626..86818276f7 100644
--- a/share/man/man9/fetch.9
+++ b/share/man/man9/fetch.9
@@ -35,11 +35,12 @@
 .\" $FreeBSD: src/share/man/man9/fetch.9,v 1.6.2.4 2001/12/17 11:30:18 ru Exp $
 .\" $DragonFly: src/share/man/man9/fetch.9,v 1.4 2007/04/07 19:29:52 swildner Exp $
 .\"
-.Dd January 7, 1996
+.Dd March 14, 2010
 .Dt FETCH 9
 .Os
 .Sh NAME
 .Nm fetch ,
+.Nm casuword ,
 .Nm fubyte ,
 .Nm fusword ,
 .Nm fuword
@@ -49,6 +50,8 @@
 .In sys/time.h
 .In sys/systm.h
 .In sys/resourcevar.h
+.Ft u_long
+.Fn casuword "u_long *base" "u_long oldval" "u_long newval"
 .Ft int
 .Fn fubyte "const void *base"
 .Ft int
@@ -64,6 +67,18 @@ The
 .Nm
 routines provide the following functionality:
 .Bl -tag -width ".Fn fusword"
+.It Fn casuword
+Compares
+.Fa oldval
+with the word at
+.Fa base
+, and if equal, 
+.Fa base
+is set to
+.Fa newval .
+The old value at
+.Fa base
+is then returned.
 .It Fn fubyte
 Fetches a byte of data from the user-space address
 .Fa base .
-- 
2.11.4.GIT