From fb16941a023dfc92cfd1f0acbdef1c4838566d44 Mon Sep 17 00:00:00 2001
From: beveloper <beveloper@nowhere.fake>
Date: Thu, 21 Aug 2003 17:55:56 +0000
Subject: [PATCH] added atomic_read

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4359 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/kernel/libroot/os/arch/ppc/atomic.S | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/kernel/libroot/os/arch/ppc/atomic.S b/src/kernel/libroot/os/arch/ppc/atomic.S
index c054b20f6b..470deb91b2 100644
--- a/src/kernel/libroot/os/arch/ppc/atomic.S
+++ b/src/kernel/libroot/os/arch/ppc/atomic.S
@@ -61,3 +61,12 @@ lost5:	lwarx	%r6, 0, %r3
 out5:	mr		%r3, %r6
 		blr
 
+/* int atomic_read(int *value) 
+ *                  r3
+ */
+FUNCTION(atomic_read):
+lost6:	lwarx	%r5, 0, %r3
+		stwcx.	%r5, 0, %r3
+		bne-	lost6
+		mr		%r3, %r5
+		blr