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/** @file
Set error flag for all division functions
Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
/**
Divides a 64-bit unsigned integer by a 32-bit unsigned integer and
generates a 64-bit unsigned result and an optional 32-bit unsigned remainder.
This function divides the 64-bit unsigned value Dividend by the 32-bit
unsigned value Divisor and generates a 64-bit unsigned quotient. If Remainder
is not NULL, then the 32-bit unsigned remainder is returned in Remainder.
This function returns the 64-bit unsigned quotient.
@param Dividend A 64-bit unsigned value.
@param Divisor A 32-bit unsigned value.
@param Remainder A pointer to a 32-bit unsigned value. This parameter is
optional and may be NULL.
@return Dividend / Divisor
**/
UINT64
EFIAPI
InternalMathDivRemU64x32 (
IN UINT64 Dividend,
IN UINT32 Divisor,
OUT UINT32 *Remainder
)
{
_asm {
mov ecx, Divisor
mov eax, dword ptr [Dividend + 4]
xor edx, edx
div ecx
push eax
mov eax, dword ptr [Dividend + 0]
div ecx
mov ecx, Remainder
jecxz RemainderNull // abandon remainder if Remainder == NULL
mov [ecx], edx
RemainderNull:
pop edx
}
}
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