From bf3f4189a14f6c8a218375d8763594bd6584ebcd Mon Sep 17 00:00:00 2001
From: sekiya <sekiya@NetBSD.org>
Date: Fri, 1 Sep 2006 05:43:23 +0000
Subject: [PATCH] Fix delay() so that gcc4 does not optimize it into a noop. 
 Lifted from the newsmips implementation by tsutsui@

---
 sys/arch/sgimips/sgimips/machdep.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/sys/arch/sgimips/sgimips/machdep.c b/sys/arch/sgimips/sgimips/machdep.c
index 7d6dcf643be1..2dcf432542c1 100644
--- a/sys/arch/sgimips/sgimips/machdep.c
+++ b/sys/arch/sgimips/sgimips/machdep.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: machdep.c,v 1.96 2006/04/09 01:18:14 tsutsui Exp $	*/
+/*	$NetBSD: machdep.c,v 1.97 2006/09/01 05:43:23 sekiya Exp $	*/
 
 /*
  * Copyright (c) 2000 Soren S. Jorvang
@@ -34,7 +34,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.96 2006/04/09 01:18:14 tsutsui Exp $");
+__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.97 2006/09/01 05:43:23 sekiya Exp $");
 
 #include "opt_ddb.h"
 #include "opt_kgdb.h"
@@ -754,15 +754,13 @@ microtime(struct timeval *tvp)
 	splx(s);
 }
 
-inline void
-delay(unsigned long n)
+void delay(unsigned long n)
 {
-	u_long i;
-	long divisor = curcpu()->ci_divisor_delay;
+	register int __N = curcpu()->ci_divisor_delay * n;
 
-	while (n-- > 0)
-		for (i = divisor; i > 0; i--)
-			;
+	do {
+		__asm("addiu %0,%1,-1" : "=r" (__N) : "0" (__N));
+	} while (__N > 0);
 }
 
 /*