X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=OldMdePkg%2FLibrary%2FBaseLib%2FX64%2FInterlockedCompareExchange32.S;fp=OldMdePkg%2FLibrary%2FBaseLib%2FX64%2FInterlockedCompareExchange32.S;h=cd85279c7342c6d43541aa28ef5759caa87eab6d;hp=0000000000000000000000000000000000000000;hb=586cd1f1f4129ab7ec24543d4968801e17cc870b;hpb=144d783d40c8a02113350feabd1b9a55b692313f

diff --git a/OldMdePkg/Library/BaseLib/X64/InterlockedCompareExchange32.S b/OldMdePkg/Library/BaseLib/X64/InterlockedCompareExchange32.S
new file mode 100644
index 0000000000..cd85279c73
--- /dev/null
+++ b/OldMdePkg/Library/BaseLib/X64/InterlockedCompareExchange32.S
@@ -0,0 +1,37 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2006, Intel Corporation
+# All rights reserved. This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution.  The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+#
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+# Module Name:
+#
+#   InterlockedCompareExchange32.Asm
+#
+# Abstract:
+#
+#   InterlockedCompareExchange32 function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+#------------------------------------------------------------------------------
+# UINT32
+# EFIAPI
+# InterlockedCompareExchange32 (
+#   IN      UINT32                    *Value,
+#   IN      UINT32                    CompareValue,
+#   IN      UINT32                    ExchangeValue
+#   );
+#------------------------------------------------------------------------------
+.global _InternalSyncCompareExchange32;
+_InternalSyncCompareExchange32:
+    mov     %edx, %eax
+    lock    cmpxchg %r8d, (%rcx)
+    ret