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/* Implement realloc with the help of the malloc and free wrappers.
Copyright (C) 2014-2015 Free Software Foundation, Inc.
This file is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 3, or (at your option) any
later version.
This file 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
General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#include <stddef.h>
#include "nvptx-malloc.h"
void *
__nvptx_realloc (void *ptr, size_t newsz)
{
if (newsz == 0)
{
__nvptx_free (ptr);
return NULL;
}
void *newptr = __nvptx_malloc (newsz);
size_t oldsz;
if (ptr == NULL)
oldsz = 0;
else
{
size_t *sp = __extension__ (size_t *)(ptr - 8);
oldsz = *sp;
}
if (oldsz != 0)
__builtin_memcpy (newptr, ptr, oldsz > newsz ? newsz : oldsz);
__nvptx_free (ptr);
return newptr;
}
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