diff options
Diffstat (limited to 'Core/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.S')
-rw-r--r-- | Core/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.S | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.S b/Core/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.S new file mode 100644 index 0000000000..d9eb8e9e11 --- /dev/null +++ b/Core/MdePkg/Library/BaseLib/Ia32/DivU64x32Remainder.S @@ -0,0 +1,46 @@ +#------------------------------------------------------------------------------
+#
+# Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
+# 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:
+#
+# DivError.S
+#
+# Abstract:
+#
+# Set error flag for all division functions
+#
+#------------------------------------------------------------------------------
+
+ASM_GLOBAL ASM_PFX(InternalMathDivRemU64x32)
+
+#------------------------------------------------------------------------------
+# UINT64
+# EFIAPI
+# InternalMathDivRemU64x32 (
+# IN UINT64 Dividend,
+# IN UINT32 Divisor,
+# OUT UINT32 *Remainder
+# );
+#------------------------------------------------------------------------------
+ASM_PFX(InternalMathDivRemU64x32):
+ movl 12(%esp), %ecx # ecx <- divisor
+ movl 8(%esp), %eax # eax <- dividend[32..63]
+ xorl %edx, %edx
+ divl %ecx # eax <- quotient[32..63], edx <- remainder
+ push %eax
+ movl 8(%esp), %eax # eax <- dividend[0..31]
+ divl %ecx # eax <- quotient[0..31]
+ movl 20(%esp), %ecx # ecx <- Remainder
+ jecxz L1 # abandon remainder if Remainder == NULL
+ movl %edx, (%ecx)
+L1:
+ pop %edx # edx <- quotient[32..63]
+ ret
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