newlib/libc/machine/nvptx/malloc.c

   1 /*
   2  * Support file for nvptx in newlib.
   3  * Copyright (c) 2016-2018 Mentor Graphics.
   4  *
   5  * The authors hereby grant permission to use, copy, modify, distribute,
   6  * and license this software and its documentation for any purpose, provided
   7  * that existing copyright notices are retained in all copies and that this
   8  * notice is included verbatim in any distributions. No written agreement,
   9  * license, or royalty fee is required for any of the authorized uses.
  10  * Modifications to this software may be copyrighted by their authors
  11  * and need not follow the licensing terms described here, provided that
  12  * the new terms are clearly indicated on the first page of each file where
  13  * they apply.
  14  */
  15
  16 #include <stdlib.h>
  17
  18 /* The CUDA-provided malloc.  */
  19 void *sys_malloc (size_t) __asm__ ("malloc");
  20
  21 /* The user-visible malloc (renamed by compiler).  */
  22 void *malloc (size_t size)
  23 {
  24   long long *ptr = sys_malloc (size + sizeof (long long));
  25   if (ptr)
  26     *(size_t *)ptr++ = size;
  27
  28   return ptr;
  29 }