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/*****************************************************************************
* Fast function for filling cache-inhibited memory regions via h-call.
*
* Copyright 2015 Red Hat, Inc.
*
* This program and the accompanying materials
* are made available under the terms of the BSD License
* which accompanies this distribution, and is available at
* http://www.opensource.org/licenses/bsd-license.php
*
* Contributors:
* Thomas Huth, Red Hat Inc. - initial implementation
*****************************************************************************/
#include <cache.h>
#include <string.h>
typedef unsigned long type_u;
/**
* fast_rfill is the implementation of the FAST_RFILL macro with h-calls.
* This is defined here instead of cache.h since we need a temporary
* local buffer - and that caused stack size problems in engine() when
* we used it directly in the FAST_RFILL macro.
*/
void fast_rfill(char *dst, long size, char pat)
{
type_u buf[64];
memset(buf, pat, size < sizeof(buf) ? size : sizeof(buf));
while (size > sizeof(buf)) {
FAST_MRMOVE(buf, dst, sizeof(buf));
dst += sizeof(buf);
size -= sizeof(buf);
}
FAST_MRMOVE(buf, dst, size);
}
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