Add in .S file for GCC tool-chain.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5537 6f19259b-4bc3-4df7-8a09-765794883524

EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/Power10U64.S

@@ -0,0 +1,82 @@
+#/*++
+#
+#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"
+#include "EfiBind.h"
+#---------------------------------------------------------------------------
+    .686: 
+    #.MODEL flat,C
+    .code: 
+
+.globl ASM_PFX(DivU64x32)
+#---------------------------------------------------------------------------
+#
+#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_PFX(Power10U64):
+  pushl  %ebp
+  movl   %esp, %ebp
+  movl   8(%ebp), %eax           # dword ptr Operand[0]
+  movl   0xC(%ebp), %edx           # dword ptr Operand[4]
+  movl   0x10(%ebp), %ecx           #Power
+  jcxz   _Power10U64_Done
+
+_Power10U64_Wend: 
+  pushl  $10
+  push   0xC(%ebp)
+  push   0x8(%ebp)
+  call   ASM_PFX(MultU64x32)
+  addl   $0xc, %esp
+  movl   %eax, 8(%ebp)  # dword ptr Operand[0]
+  movl   %edx, 0xC(%ebp)  # dword ptr Operand[4]
+  loopl  _Power10U64_Wend
+
+_Power10U64_Done: 
+
+  popl   %ebp
+  ret
+#Power10U64 ENDP
+