diff options
Diffstat (limited to 'StdLib/LibC/CRT/Ia32/umoddi3.S')
-rw-r--r-- | StdLib/LibC/CRT/Ia32/umoddi3.S | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/StdLib/LibC/CRT/Ia32/umoddi3.S b/StdLib/LibC/CRT/Ia32/umoddi3.S new file mode 100644 index 0000000000..9b72e918a4 --- /dev/null +++ b/StdLib/LibC/CRT/Ia32/umoddi3.S @@ -0,0 +1,89 @@ +#------------------------------------------------------------------------------
+#
+# Copyright (c) 2009 - 2011, 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:
+#
+# MathReminderU64x64.S
+#
+# Abstract:
+#
+# 64-bit Math Worker Function.
+# Divides a 64-bit unsigned value by another 64-bit unsigned value and returns
+# the 64-bit unsigned remainder
+#
+#------------------------------------------------------------------------------
+
+ .686:
+ .code:
+
+ASM_GLOBAL ASM_PFX(__umoddi3), ASM_PFX(DivU64x64Remainder)
+
+#------------------------------------------------------------------------------
+#
+# void __cdecl __umoddi3 (void)
+#
+#------------------------------------------------------------------------------
+ASM_PFX(__umoddi3):
+ # Original local stack when calling __umoddi3
+ # -----------------
+ # | |
+ # |---------------|
+ # | |
+ # |-- Divisor --|
+ # | |
+ # |---------------|
+ # | |
+ # |-- Dividend --|
+ # | |
+ # |---------------|
+ # | ReturnAddr** |
+ # ESP---->|---------------|
+ #
+
+ #
+ # Set up the local stack for Reminder pointer
+ #
+ sub $8, %esp
+ push %esp
+
+ #
+ # Set up the local stack for Divisor parameter
+ #
+ movl 28(%esp), %eax
+ push %eax
+ movl 28(%esp), %eax
+ push %eax
+
+ #
+ # Set up the local stack for Dividend parameter
+ #
+ movl 28(%esp), %eax
+ push %eax
+ movl 28(%esp), %eax
+ push %eax
+
+ #
+ # Call native DivU64x64Remainder of BaseLib
+ #
+ jmp ASM_PFX(DivU64x64Remainder)
+
+ #
+ # Put the Reminder in EDX:EAX as return value
+ #
+ movl 20(%esp), %eax
+ movl 24(%esp), %edx
+
+ #
+ # Adjust stack
+ #
+ add $28, %esp
+
+ ret $16
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