1 files changed, 8 insertions, 33 deletions

diff --git a/freebsd/sys/i386/include/machine/cpufunc.h b/freebsd/sys/i386/include/machine/cpufunc.h
index df283e73..923d28ea 100644
--- a/freebsd/sys/i386/include/machine/cpufunc.h
+++ b/freebsd/sys/i386/include/machine/cpufunc.h
@@ -10,7 +10,7 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
+ * 3. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
  *
@@ -160,6 +160,13 @@ mfence(void)
 	__asm __volatile("mfence" : : : "memory");
 }
 
+static __inline void
+sfence(void)
+{
+
+	__asm __volatile("sfence" : : : "memory");
+}
+
 #ifdef _KERNEL
 
 #ifndef __rtems__
@@ -631,34 +638,6 @@ load_dr3(u_int dr3)
 }
 
 static __inline u_int
-rdr4(void)
-{
-	u_int	data;
-	__asm __volatile("movl %%dr4,%0" : "=r" (data));
-	return (data);
-}
-
-static __inline void
-load_dr4(u_int dr4)
-{
-	__asm __volatile("movl %0,%%dr4" : : "r" (dr4));
-}
-
-static __inline u_int
-rdr5(void)
-{
-	u_int	data;
-	__asm __volatile("movl %%dr5,%0" : "=r" (data));
-	return (data);
-}
-
-static __inline void
-load_dr5(u_int dr5)
-{
-	__asm __volatile("movl %0,%%dr5" : : "r" (dr5));
-}
-
-static __inline u_int
 rdr6(void)
 {
 	u_int	data;
@@ -753,8 +732,6 @@ void	load_dr0(u_int dr0);
 void	load_dr1(u_int dr1);
 void	load_dr2(u_int dr2);
 void	load_dr3(u_int dr3);
-void	load_dr4(u_int dr4);
-void	load_dr5(u_int dr5);
 void	load_dr6(u_int dr6);
 void	load_dr7(u_int dr7);
 void	load_fs(u_short sel);
@@ -776,8 +753,6 @@ u_int	rdr0(void);
 u_int	rdr1(void);
 u_int	rdr2(void);
 u_int	rdr3(void);
-u_int	rdr4(void);
-u_int	rdr5(void);
 u_int	rdr6(void);
 u_int	rdr7(void);
 uint64_t rdtsc(void);