diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/Power10U64.c')
-rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/Power10U64.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/Power10U64.c b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/Power10U64.c new file mode 100644 index 0000000000..e8e1652db2 --- /dev/null +++ b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/Power10U64.c @@ -0,0 +1,67 @@ +/*++
+
+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:
+
+ Power10U64.c
+
+Abstract:
+
+ Calculates Operand * 10 ^ Power
+
+--*/
+
+#include "Tiano.h"
+
+UINT64
+MultU64x32 (
+ IN UINT64 Multiplicand,
+ IN UINTN Multiplier
+ );
+
+UINT64
+Power10U64 (
+ IN UINT64 Operand,
+ IN UINTN Power
+ )
+/*++
+
+Routine Description:
+
+ Raise 10 to the power of Power, and multiply the result with Operand
+
+Arguments:
+
+ Operand - multiplicand
+ Power - power
+
+Returns:
+
+ Operand * 10 ^ Power
+
+--*/
+{
+ __asm {
+ mov ecx, Power
+ jcxz _Power10U64_Done
+
+_Power10U64_Wend:
+ push 10
+ push dword ptr Operand[4]
+ push dword ptr Operand[0]
+ call MultU64x32
+ mov dword ptr Operand[0], eax
+ mov dword ptr Operand[4], edx
+ loop _Power10U64_Wend
+
+_Power10U64_Done:
+ }
+}
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