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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [libgloss/] [mcore/] [sbrk.c] - Blame information for rev 207

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Line No. Rev Author Line
1 207 jeremybenn
/* sbrk.c -- allocate memory dynamically.
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 *
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 * Copyright (c) 1995,1996,1999 Cygnus Support
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 *
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 * The authors hereby grant permission to use, copy, modify, distribute,
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 * and license this software and its documentation for any purpose, provided
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 * that existing copyright notices are retained in all copies and that this
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 * notice is included verbatim in any distributions. No written agreement,
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 * license, or royalty fee is required for any of the authorized uses.
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 * Modifications to this software may be copyrighted by their authors
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 * and need not follow the licensing terms described here, provided that
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 * the new terms are clearly indicated on the first page of each file where
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 * they apply.
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 */
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "glue.h"
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caddr_t
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_sbrk (size_t incr)
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{
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  static char *heap_end;
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  char *prev_heap_end;
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  char *sp = (char *)&sp;
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  if (heap_end == 0)
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    {
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      heap_end = _end;
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    }
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  prev_heap_end = heap_end;
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  if (heap_end > sp)
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    {
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      _write (1, "Heap and stack collision\n", 25);
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#if 0 /* Calling abort brings in the signal handling code.  */
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      abort ();
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#else
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      exit (1);
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#endif
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    }
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  heap_end += incr;
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  return (caddr_t) prev_heap_end;
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}

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