Rename dirs

[mirror_edk2.git] / MdePkg / Library / BaseLib / Ia32 / InterlockedCompareExchange64.s

diff --git a/MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange64.s b/MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange64.s
new file mode 100644 (file)
index 0000000..abc51e9
--- /dev/null
+++ b/MdePkg/Library/BaseLib/Ia32/InterlockedCompareExchange64.s
@@ -0,0 +1,52 @@
+#------------------------------------------------------------------------------\r
+#\r
+# Copyright (c) 2006, Intel Corporation\r
+# All rights reserved. This program and the accompanying materials\r
+# are licensed and made available under the terms and conditions of the BSD License\r
+# which accompanies this distribution.  The full text of the license may be found at\r
+# http://opensource.org/licenses/bsd-license.php\r
+#\r
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+#\r
+# Module Name:\r
+#\r
+#   InterlockedCompareExchange64.Asm\r
+#\r
+# Abstract:\r
+#\r
+#   InterlockedCompareExchange64 function\r
+#\r
+# Notes:\r
+#\r
+#------------------------------------------------------------------------------\r
+\r
+\r
+\r
+     \r
+\r
+#------------------------------------------------------------------------------\r
+# UINT64\r
+# EFIAPI\r
+# InterlockedCompareExchange64 (\r
+#   IN      UINT64                    *Value,\r
+#   IN      UINT64                    CompareValue,\r
+#   IN      UINT64                    ExchangeValue\r
+#   );\r
+#------------------------------------------------------------------------------\r
+.global _InterlockedCompareExchange64\r
+    push    %esi\r
+    push    %ebx\r
+    movl    12(%esp),%esi\r
+    movl    16(%esp),%eax\r
+    movl    20(%esp),%edx\r
+    movl    24(%esp),%ebx\r
+    movl    28(%esp),%ecx\r
+    lock    \r
+    cmpxchg8b   (%esi)\r
+    pop     %ebx\r
+    pop     %esi\r
+    ret\r
+\r
+\r
+\r