From af1a266670d040d2f4083ff309d732d648afba2a Mon Sep 17 00:00:00 2001
From: Angelos Mouzakitis <a.mouzakitis@virtualopensystems.com>
Date: Tue, 10 Oct 2023 14:33:42 +0000
Subject: Add submodule dependency files

Change-Id: Iaf8d18082d3991dec7c0ebbea540f092188eb4ec
---
 .../X64/InterlockedCompareExchange64.c             | 47 ++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 roms/edk2/MdePkg/Library/BaseSynchronizationLib/X64/InterlockedCompareExchange64.c

(limited to 'roms/edk2/MdePkg/Library/BaseSynchronizationLib/X64/InterlockedCompareExchange64.c')

diff --git a/roms/edk2/MdePkg/Library/BaseSynchronizationLib/X64/InterlockedCompareExchange64.c b/roms/edk2/MdePkg/Library/BaseSynchronizationLib/X64/InterlockedCompareExchange64.c
new file mode 100644
index 000000000..4b9167c0d
--- /dev/null
+++ b/roms/edk2/MdePkg/Library/BaseSynchronizationLib/X64/InterlockedCompareExchange64.c
@@ -0,0 +1,47 @@
+/** @file
+  InterlockedCompareExchange64 function
+
+  Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+/**
+  Microsoft Visual Studio 7.1 Function Prototypes for I/O Intrinsics.
+**/
+
+__int64 _InterlockedCompareExchange64(
+   __int64 volatile * Destination,
+   __int64 Exchange,
+   __int64 Comperand
+);
+
+#pragma intrinsic(_InterlockedCompareExchange64)
+
+/**
+  Performs an atomic compare exchange operation on a 64-bit unsigned integer.
+
+  Performs an atomic compare exchange operation on the 64-bit unsigned integer specified
+  by Value.  If Value is equal to CompareValue, then Value is set to ExchangeValue and
+  CompareValue is returned.  If Value is not equal to CompareValue, then Value is returned.
+  The compare exchange operation must be performed using MP safe mechanisms.
+
+  @param  Value         A pointer to the 64-bit value for the compare exchange
+                        operation.
+  @param  CompareValue  64-bit value used in compare operation.
+  @param  ExchangeValue 64-bit value used in exchange operation.
+
+  @return The original *Value before exchange.
+
+**/
+UINT64
+EFIAPI
+InternalSyncCompareExchange64 (
+  IN      volatile UINT64           *Value,
+  IN      UINT64                    CompareValue,
+  IN      UINT64                    ExchangeValue
+  )
+{
+  return _InterlockedCompareExchange64 (Value, ExchangeValue, CompareValue);
+}
+
-- 
cgit 1.2.3-korg