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author | hhtian <hhtian@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-11-01 06:30:58 +0000 |
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committer | hhtian <hhtian@6f19259b-4bc3-4df7-8a09-765794883524> | 2010-11-01 06:30:58 +0000 |
commit | 97f98500c1d40eba76210961e90ea5d354bcbc18 (patch) | |
tree | 88513b4a041208d992929db5703a4312a0497a3b /CryptoPkg/Library/BaseCryptLib/SysCall/Ia32/MathDivU64x64.S | |
parent | a3bcde70e6dc69000f85cc5deee98101d2ae200a (diff) | |
download | edk2-platforms-97f98500c1d40eba76210961e90ea5d354bcbc18.tar.xz |
Add CryptoPkg (from UDK2010.UP3)
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10987 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'CryptoPkg/Library/BaseCryptLib/SysCall/Ia32/MathDivU64x64.S')
-rw-r--r-- | CryptoPkg/Library/BaseCryptLib/SysCall/Ia32/MathDivU64x64.S | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/CryptoPkg/Library/BaseCryptLib/SysCall/Ia32/MathDivU64x64.S b/CryptoPkg/Library/BaseCryptLib/SysCall/Ia32/MathDivU64x64.S new file mode 100644 index 0000000000..f46d5b84f4 --- /dev/null +++ b/CryptoPkg/Library/BaseCryptLib/SysCall/Ia32/MathDivU64x64.S @@ -0,0 +1,83 @@ +#------------------------------------------------------------------------------
+#
+# Copyright (c) 2009 - 2010, 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:
+#
+# MathDivU64x64.S
+#
+# Abstract:
+#
+# 64-bit Math Worker Function.
+# Divides a 64-bit unsigned value with a 64-bit unsigned value and returns
+# a 64-bit unsigned result.
+#
+#------------------------------------------------------------------------------
+
+ .686:
+ .code:
+
+ASM_GLOBAL ASM_PFX(__udivdi3), ASM_PFX(DivU64x64Remainder)
+
+#------------------------------------------------------------------------------
+#
+# void __cdecl __udivdi3 (void)
+#
+#------------------------------------------------------------------------------
+ASM_PFX(__udivdi3):
+ # Original local stack when calling __udivdi3
+ # -----------------
+ # | |
+ # |---------------|
+ # | |
+ # |-- Divisor --|
+ # | |
+ # |---------------|
+ # | |
+ # |-- Dividend --|
+ # | |
+ # |---------------|
+ # | ReturnAddr** |
+ # ESP---->|---------------|
+ #
+
+ #
+ # Set up the local stack for NULL Reminder pointer
+ #
+ xorl %eax, %eax
+ push %eax
+
+ #
+ # Set up the local stack for Divisor parameter
+ #
+ movl 20(%esp), %eax
+ push %eax
+ movl 20(%esp), %eax
+ push %eax
+
+ #
+ # Set up the local stack for Dividend parameter
+ #
+ movl 20(%esp), %eax
+ push %eax
+ movl 20(%esp), %eax
+ push %eax
+
+ #
+ # Call native DivU64x64Remainder of BaseLib
+ #
+ jmp ASM_PFX(DivU64x64Remainder)
+
+ #
+ # Adjust stack
+ #
+ addl $20, %esp
+
+ ret $16
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