Curle
d588e232c4
This branch has been dedicated to purely the UEFI bootloader. As such, all other code has been removed. This code can be compiled with Visual Studio, gcc or llvm.
64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/*
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* Copright (C) 2014 Linaro Ltd.
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* Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice and this list of conditions, without modification.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License as published by the Free Software Foundation;
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* either version 2 of the License, or (at your option) any later version.
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*/
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#include "lib.h"
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UINT64
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LShiftU64 (
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IN UINT64 Operand,
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IN UINTN Count
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)
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// Left shift 64bit by 32bit and get a 64bit result
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{
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return Operand << Count;
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}
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UINT64
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RShiftU64 (
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IN UINT64 Operand,
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IN UINTN Count
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)
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// Right shift 64bit by 32bit and get a 64bit result
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{
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return Operand >> Count;
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}
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UINT64
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MultU64x32 (
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IN UINT64 Multiplicand,
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IN UINTN Multiplier
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)
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// Multiple 64bit by 32bit and get a 64bit result
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{
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return Multiplicand * Multiplier;
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}
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UINT64
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DivU64x32 (
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IN UINT64 Dividend,
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IN UINTN Divisor,
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OUT UINTN *Remainder OPTIONAL
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)
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// divide 64bit by 32bit and get a 64bit result
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// N.B. only works for 31bit divisors!!
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{
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if (Remainder)
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*Remainder = Dividend % Divisor;
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return Dividend / Divisor;
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}
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