diff options
Diffstat (limited to 'EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/MultU64x32.S')
| -rw-r--r-- | EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/MultU64x32.S | 142 |
1 files changed, 71 insertions, 71 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/MultU64x32.S b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/MultU64x32.S index 1d04247001..fd7f43d6ed 100644 --- a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/MultU64x32.S +++ b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/Ia32/MultU64x32.S @@ -1,71 +1,71 @@ -#/*++ -# -#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: -# -# MultU64x32.c -# -#Abstract: -# -# 64-bit Multiplication function for IA-32 -# -#--*/ -#include "EfiBind.h" -#--------------------------------------------------------------------------- - .686: - #.MODEL flat,C - .code: - -#--------------------------------------------------------------------------- -.globl ASM_PFX(MultU64x32) -#UINT64 -#MultU64x32 ( -# IN UINT64 Multiplicand, -# IN UINTN Multiplier -# ) -#/*++ -# -#Routine Description: -# -# This routine allows a 64 bit value to be multiplied with a 32 bit -# value returns 64bit result. -# No checking if the result is greater than 64bits -# -#Arguments: -# -# Multiplicand - multiplicand -# Multiplier - multiplier -# -#Returns: -# -# Multiplicand * Multiplier -# -#--*/ -ASM_PFX(MultU64x32): - - movl 4(%esp), %eax # dword ptr Multiplicand[0] - mull 0xC(%esp) # Multiplier - pushl %eax - pushl %edx - movl 0x10(%esp), %eax # dword ptr Multiplicand[4] - mull 0x14(%esp) # Multiplier - # - # The value in edx stored by second multiplication overflows - # the output and should be discarded. So here we overwrite it - # with the edx value of first multiplication. - # - popl %edx - addl %eax, %edx - popl %eax - - ret -#MultU64x32 ENDP - +#/*++
+#
+#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:
+#
+# MultU64x32.c
+#
+#Abstract:
+#
+# 64-bit Multiplication function for IA-32
+#
+#--*/
+#include "EfiBind.h"
+#---------------------------------------------------------------------------
+ .686:
+ #.MODEL flat,C
+ .code:
+
+#---------------------------------------------------------------------------
+.globl ASM_PFX(MultU64x32)
+#UINT64
+#MultU64x32 (
+# IN UINT64 Multiplicand,
+# IN UINTN Multiplier
+# )
+#/*++
+#
+#Routine Description:
+#
+# This routine allows a 64 bit value to be multiplied with a 32 bit
+# value returns 64bit result.
+# No checking if the result is greater than 64bits
+#
+#Arguments:
+#
+# Multiplicand - multiplicand
+# Multiplier - multiplier
+#
+#Returns:
+#
+# Multiplicand * Multiplier
+#
+#--*/
+ASM_PFX(MultU64x32):
+
+ movl 4(%esp), %eax # dword ptr Multiplicand[0]
+ mull 0xC(%esp) # Multiplier
+ pushl %eax
+ pushl %edx
+ movl 0x10(%esp), %eax # dword ptr Multiplicand[4]
+ mull 0x14(%esp) # Multiplier
+ #
+ # The value in edx stored by second multiplication overflows
+ # the output and should be discarded. So here we overwrite it
+ # with the edx value of first multiplication.
+ #
+ popl %edx
+ addl %eax, %edx
+ popl %eax
+
+ ret
+#MultU64x32 ENDP
+
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