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154 lines
2.5 KiB
C
154 lines
2.5 KiB
C
/* $Id: mem.c,v 1.12 2002/12/08 15:57:39 robd Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: kernel/rtl/mem.c
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* PURPOSE: Memory functions
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* PROGRAMMER: David Welch (welch@mcmail.com)
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* UPDATE HISTORY:
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* Created 22/05/98
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*/
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/* INCLUDES *****************************************************************/
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#include <ddk/ntddk.h>
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#include <string.h>
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/* FUNCTIONS *****************************************************************/
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ULONG
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STDCALL
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RtlCompareMemory(PVOID Source1,
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PVOID Source2,
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ULONG Length)
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/*
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* FUNCTION: Compares blocks of memory and returns the number of equal bytes
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* ARGUMENTS:
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* Source1 = Block to compare
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* Source2 = Block to compare
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* Length = Number of bytes to compare
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* RETURNS: Number of equal bytes
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*/
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{
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int i,total;
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for (i=0,total=0;i<Length;i++)
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{
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if ( ((PUCHAR)Source1)[i] == ((PUCHAR)Source2)[i] )
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{
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total++;
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}
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}
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return(total);
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}
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ULONG
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STDCALL
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RtlCompareMemoryUlong (
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PVOID Source,
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ULONG Length,
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ULONG Value
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)
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/*
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* FUNCTION: Compares a block of ULONGs with an ULONG and returns the number of equal bytes
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* ARGUMENTS:
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* Source = Block to compare
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* Length = Number of bytes to compare
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* Value = Value to compare
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* RETURNS: Number of equal bytes
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*/
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{
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PULONG ptr = (PULONG)Source;
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ULONG len = Length / sizeof(ULONG);
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int i;
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for (i = 0; i < len; i++)
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{
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if (*ptr != Value)
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break;
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ptr++;
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}
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return (ULONG)((PCHAR)ptr - (PCHAR)Source);
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}
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#if 0
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VOID RtlCopyBytes(PVOID Destination,
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CONST VOID* Source,
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ULONG Length)
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{
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RtlCopyMemory(Destination,Source,Length);
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}
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VOID RtlCopyMemory(VOID* Destination, CONST VOID* Source, ULONG Length)
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{
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DPRINT("RtlCopyMemory(Destination %x Source %x Length %d\n",
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Destination,Source,Length);
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memcpy(Destination,Source,Length);
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DPRINT("*Destination %x\n",*(PULONG)Destination);
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}
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#endif
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VOID
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STDCALL
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RtlFillMemory (
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PVOID Destination,
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ULONG Length,
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UCHAR Fill
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)
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{
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memset(Destination, Fill, Length);
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}
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VOID
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STDCALL
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RtlFillMemoryUlong (
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PVOID Destination,
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ULONG Length,
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ULONG Fill
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)
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{
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PULONG Dest = Destination;
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ULONG Count = Length / sizeof(ULONG);
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while (Count > 0)
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{
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*Dest = Fill;
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Dest++;
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Count--;
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}
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}
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VOID
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STDCALL
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RtlMoveMemory (
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PVOID Destination,
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CONST VOID * Source,
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ULONG Length
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)
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{
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memmove (
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Destination,
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Source,
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Length
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);
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}
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VOID
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STDCALL
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RtlZeroMemory (
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PVOID Destination,
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ULONG Length
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)
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{
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RtlFillMemory (
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Destination,
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Length,
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0
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);
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}
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/* EOF */
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