Add in the 1st version of ECP.

[mirror_edk2.git] / EdkCompatibilityPkg / Foundation / Library / EdkIIGlueLib / Library / BaseLib / Ia32 / SwapBytes64.asm

diff --git a/EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/SwapBytes64.asm b/EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/SwapBytes64.asm
new file mode 100644 (file)
index 0000000..9554c19
--- /dev/null
+++ b/EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/SwapBytes64.asm
@@ -0,0 +1,41 @@
+; Copyright (c) 2004, 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
+;   CpuId.Asm\r
+;\r
+; Abstract:\r
+;\r
+;   AsmCpuid function\r
+;\r
+; Notes:\r
+;\r
+;------------------------------------------------------------------------------\r
+\r
+    .586\r
+    .model  flat,C\r
+    .code\r
+\r
+;------------------------------------------------------------------------------\r
+; UINT64\r
+; EFIAPI\r
+; InternalMathSwapBytes64 (\r
+;   IN      UINT64                    Operand\r
+;   );\r
+;------------------------------------------------------------------------------\r
+InternalMathSwapBytes64 PROC\r
+    mov     eax, [esp + 8]              ; eax <- upper 32 bits\r
+    mov     edx, [esp + 4]              ; edx <- lower 32 bits\r
+    bswap   eax\r
+    bswap   edx\r
+    ret\r
+InternalMathSwapBytes64 ENDP\r
+\r
+    END\r