From 8c92b502be26553a5c8efed5f8a08ca339a9f834 Mon Sep 17 00:00:00 2001
From: paul <paul@FreeBSD.org>
Date: Thu, 15 Sep 1994 16:27:14 +0000
Subject: Added MCOUNT_ENTER and MCOUNT_EXIT macros to profile.h

Removed inb function since it's more correctly in pio.h

Copied write_eflags and read_eflags over from npx.c

(Some changes to the macros suggested by Bruce were not made at this
time since his suggestions probably apply to all the macros and
these inlined/macro definitions need a lot of cleaning up at some
point in the future.)

Reviewed by:	Bruce
---
 sys/amd64/include/cpufunc.h | 24 ++++++++----------------
 sys/amd64/include/profile.h |  5 ++++-
 2 files changed, 12 insertions(+), 17 deletions(-)

(limited to 'sys/amd64')

diff --git a/sys/amd64/include/cpufunc.h b/sys/amd64/include/cpufunc.h
index 33a6186..455681b 100644
--- a/sys/amd64/include/cpufunc.h
+++ b/sys/amd64/include/cpufunc.h
@@ -30,7 +30,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: cpufunc.h,v 1.19 1994/08/23 13:41:37 paul Exp $
+ *	$Id: cpufunc.h,v 1.20 1994/09/02 04:12:16 davidg Exp $
  */
 
 /*
@@ -70,26 +70,18 @@ enable_intr(void)
 	__asm __volatile("sti");
 }
 
-static inline u_char
-inb(u_int port)
+static inline u_long
+read_eflags()
 {
-	u_char	data;
-	/*
-	 * We use %%dx and not %1 here because i/o is done at %dx and not at
-	 * %edx, while gcc-2.2.2 generates inferior code (movw instead of movl)
-	 * if we tell it to load (u_short) port.
-	 */
-	__asm __volatile("inb %%dx,%0" : "=a" (data) : "d" (port));
-	return data;
+	u_long ef;
+	__asm __volatile("pushf; popl %0" : "=a" (ef)); 
+	return(ef);
 }
 
 static inline void
-outb(u_int port, u_char data)
+write_eflags(u_long ef)
 {
-	u_char	al;
-
-	al = data;		/* help gcc-1.40's register allocator */
-	__asm __volatile("outb %0,%%dx" : : "a" (al), "d" (port));
+	__asm __volatile("pushl %0; popf" : : "a" ((u_long) ef));
 }
 
 static inline void
diff --git a/sys/amd64/include/profile.h b/sys/amd64/include/profile.h
index 03133aa..9fe27ec 100644
--- a/sys/amd64/include/profile.h
+++ b/sys/amd64/include/profile.h
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)profile.h	8.1 (Berkeley) 6/11/93
- * $Id: profile.h,v 1.2 1994/08/02 07:38:56 davidg Exp $
+ * $Id: profile.h,v 1.3 1994/08/21 04:55:29 paul Exp $
  */
 
 #ifndef _I386_MACHINE_PROFILE_H_
@@ -59,4 +59,7 @@ extern void mcount() asm("mcount"); void mcount() { \
 	_mcount(frompcindex, selfpc); \
 }
 
+#define MCOUNT_ENTER    save_eflags = read_eflags(); disable_intr()
+#define MCOUNT_EXIT     write_eflags(save_eflags)
+
 #endif
-- 
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