OpenCores
URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-old/] [newlib-1.17.0/] [libgloss/] [m32r/] [sbrk.c] - Rev 820

Go to most recent revision | Compare with Previous | Blame | View Log

#include <sys/types.h>
#include <sys/stat.h>
#include "syscall.h"
#include "eit.h"
 
caddr_t
_sbrk (int incr)
{
  /* `_end' is defined in the linker script.
     We must handle it carefully as we don't want the compiler to think
     it lives in the small data area.  Use medium model to ensure 32 bit
     addressability.  */
  extern char _end __attribute__ ((__model__(__medium__)));
  static char *heap_end;
  char *prev_heap_end;
  char *sp = (char *)&sp;
 
  if (heap_end == 0)
    {
      heap_end = &_end;
    }
  prev_heap_end = heap_end;
  if (heap_end > sp)
    {
      _write (1, "Heap and stack collision\n", 25);
#if 0 /* Calling abort brings in the signal handling code.  */
      abort ();
#else
      exit (1);
#endif
    }
  heap_end += incr;
  return (caddr_t) prev_heap_end;
}
 

Go to most recent revision | Compare with Previous | Blame | View Log

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.