From 4e4a5f359d04a9551b2c74a3aeb7b10677988bc0 Mon Sep 17 00:00:00 2001
From: qhuang8 <qhuang8@6f19259b-4bc3-4df7-8a09-765794883524>
Date: Wed, 19 May 2010 06:06:40 +0000
Subject: Temporarily remove build-in __sync_val_compare_and_swap() in the
 implementation of sync functions.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10519 6f19259b-4bc3-4df7-8a09-765794883524
---
 .../BaseSynchronizationLib/Ia32/GccInline.c        | 24 ++--------------------
 1 file changed, 2 insertions(+), 22 deletions(-)

(limited to 'MdePkg/Library/BaseSynchronizationLib/Ia32')

diff --git a/MdePkg/Library/BaseSynchronizationLib/Ia32/GccInline.c b/MdePkg/Library/BaseSynchronizationLib/Ia32/GccInline.c
index dcaaa6a8a2..d357e91817 100644
--- a/MdePkg/Library/BaseSynchronizationLib/Ia32/GccInline.c
+++ b/MdePkg/Library/BaseSynchronizationLib/Ia32/GccInline.c
@@ -1,7 +1,7 @@
 /** @file
   GCC inline implementation of BaseSynchronizationLib processor specific functions.
   
-  Copyright (c) 2006 - 2009, Intel Corporation. All rights reserved.<BR>
+  Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
   Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
@@ -114,13 +114,6 @@ InternalSyncCompareExchange32 (
   )
 {
 
-// GCC 4.1 and forward supports atomic builtins  
-#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 1)))
-
-  return __sync_val_compare_and_swap (Value, CompareValue, ExchangeValue);
-
-#else
-
   __asm__ __volatile__ (
     "                     \n\t"
     "lock                 \n\t"
@@ -133,9 +126,7 @@ InternalSyncCompareExchange32 (
       "cc"
     );
 
-    return CompareValue;
-
-#endif
+  return CompareValue;
 }
 
 /**
@@ -163,13 +154,6 @@ InternalSyncCompareExchange64 (
   IN      UINT64                    ExchangeValue
   )
 {
-// GCC 4.1 and forward supports atomic builtins  
-#if ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 1)))
-
-  return __sync_val_compare_and_swap (Value, CompareValue, ExchangeValue);
-
-#else
-
   __asm__ __volatile__ (
     "                       \n\t"
     "push        %%ebx      \n\t" 
@@ -186,8 +170,4 @@ InternalSyncCompareExchange64 (
     );
   
   return CompareValue;
-
-#endif
 }
-
-
-- 
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