sortix--sortix/libc/string/memmove.cpp

/*******************************************************************************

    Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.

    This file is part of the Sortix C Library.

    The Sortix C Library is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or (at your
    option) any later version.

    The Sortix C Library is distributed in the hope that it will be useful, but
    WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
    License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.

    string/memmove.cpp
    Copy memory between potentionally overlapping regions.

*******************************************************************************/

#include <stdint.h>
#include <stdlib.h>
#include <string.h>

// TODO: This is a hacky implementation!
extern "C" void* memmove(void* _dest, const void* _src, size_t n)
{
	uint8_t* dest = (uint8_t*) _dest;
	const uint8_t* src = (const uint8_t*) _src;
	uint8_t* tmp = (uint8_t*) malloc(n);
	memcpy(tmp, src, n);
	memcpy(dest, tmp, n);
	free(tmp);
	return _dest;
}