From 902d2faadf37a5627ab2cbcd8993825c8749ec82 Mon Sep 17 00:00:00 2001
From: Brian Paul <brian.paul@tungstengraphics.com>
Date: Thu, 11 Jul 2002 15:33:02 +0000
Subject: applied Eric Anholt's patch for Athlon SSE

---
 src/mesa/x86/common_x86_asm.S | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

(limited to 'src/mesa/x86/common_x86_asm.S')

diff --git a/src/mesa/x86/common_x86_asm.S b/src/mesa/x86/common_x86_asm.S
index f877fd57c2..6fe7443c81 100644
--- a/src/mesa/x86/common_x86_asm.S
+++ b/src/mesa/x86/common_x86_asm.S
@@ -1,4 +1,4 @@
-/* $Id: common_x86_asm.S,v 1.10 2002/06/11 01:26:58 brianp Exp $ */
+/* $Id: common_x86_asm.S,v 1.11 2002/07/11 15:33:02 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -129,6 +129,15 @@ LLBL(cpuid_amd):
 	 * information after we verify that the extended functions are
 	 * supported.
 	 */
+	/* The features we need are almost all in the extended set.  The
+	 * exception is SSE enable, which is in the standard set (0x1).
+	 */
+	MOV_L	( CONST(0x1), EAX )
+	CPUID
+	TEST_L	( EAX, EAX )
+	JZ	( LLBL (cpuid_failed) )
+	MOV_L	( EDX, ESI )
+
 	MOV_L	( CONST(0x80000000), EAX )
 	CPUID
 	TEST_L	( EAX, EAX )
@@ -137,6 +146,10 @@ LLBL(cpuid_amd):
 	MOV_L	( CONST(0x80000001), EAX )
 	CPUID
 	MOV_L	( EDX, EAX )
+	
+	AND_L	( CONST(0x02000000), ESI )	/* OR in the SSE bit */
+	OR_L	( ESI, EAX )
+	
 	JMP	( LLBL (cpuid_done) )
 
 LLBL(cpuid_other):
-- 
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