51 lines
1.5 KiB
C
51 lines
1.5 KiB
C
/* Implement realloc with the help of the malloc and free wrappers.
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Copyright (C) 2014-2016 Free Software Foundation, Inc.
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This file is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 3, or (at your option) any
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later version.
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This file is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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Under Section 7 of GPL version 3, you are granted additional
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permissions described in the GCC Runtime Library Exception, version
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3.1, as published by the Free Software Foundation.
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You should have received a copy of the GNU General Public License and
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a copy of the GCC Runtime Library Exception along with this program;
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see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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<http://www.gnu.org/licenses/>. */
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#include <stddef.h>
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#include "nvptx-malloc.h"
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void *
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__nvptx_realloc (void *ptr, size_t newsz)
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{
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if (newsz == 0)
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{
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__nvptx_free (ptr);
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return NULL;
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}
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void *newptr = __nvptx_malloc (newsz);
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size_t oldsz;
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if (ptr == NULL)
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oldsz = 0;
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else
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{
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size_t *sp = __extension__ (size_t *)(ptr - 8);
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oldsz = *sp;
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}
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if (oldsz != 0)
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__builtin_memcpy (newptr, ptr, oldsz > newsz ? newsz : oldsz);
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__nvptx_free (ptr);
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return newptr;
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}
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