From 48290fcae6e4dccb075262c50c0c0ac5ea970031 Mon Sep 17 00:00:00 2001
From: martin <martin@NetBSD.org>
Date: Wed, 23 May 2007 08:16:43 +0000
Subject: [PATCH] Fix a stupid bug in the save_fpstate ipi, which caused
 overwriting of struct lwp of the lwp owning the fpu. Fix clearing the fplwp -
 %o0 will not survive the call to savefpstate - duh!

---
 sys/arch/sparc64/sparc64/locore.s | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/sys/arch/sparc64/sparc64/locore.s b/sys/arch/sparc64/sparc64/locore.s
index a937508f7790..6b6507e275e4 100644
--- a/sys/arch/sparc64/sparc64/locore.s
+++ b/sys/arch/sparc64/sparc64/locore.s
@@ -1,4 +1,4 @@
-/*	$NetBSD: locore.s,v 1.248 2007/05/20 21:51:01 martin Exp $	*/
+/*	$NetBSD: locore.s,v 1.249 2007/05/23 08:16:43 martin Exp $	*/
 
 /*
  * Copyright (c) 1996-2002 Eduardo Horvath
@@ -9465,8 +9465,9 @@ ENTRY(sparc64_ipi_save_fpstate)
 	sethi	%hi(CPUINFO_VA + CI_FPLWP), %o0
 	ldx	[%o0 + %lo(CPUINFO_VA + CI_FPLWP)], %o0
 	call	savefpstate
-	 ldx	[%o0 + L_FPSTATE], %l1
-	stx	%g0, [%o0]		! fplwp = NULL
+	 ldx	[%o0 + L_FPSTATE], %o0
+	sethi	%hi(CPUINFO_VA + CI_FPLWP), %o0
+	stx	%g0, [%o0 + %lo(CPUINFO_VA + CI_FPLWP)]		! fplwp = NULL
 	mov	%g6, %o5		! restore saved registers
 	mov	%g5, %o4
 	mov	%g4, %o3