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#include <sys/types.h>

#include <sys/stat.h>

static char *heap_end = 0;

int

brk (void *ptr)

{

  heap_end = ptr;

  return 0;

}

caddr_t

sbrk (int amt)

{

  extern char end;

  char *prev_heap_end;

  if (heap_end == 0)

    heap_end = &end;

  prev_heap_end = heap_end;

  heap_end += amt;

  return ((caddr_t) prev_heap_end);

}

int

isatty (int file)

{

  return file<3;

}

int

fstat (int file, struct stat *st)

{

  st->st_mode = S_IFCHR;

  return 0;

}

int

stat (const char *filename, struct stat *st)

{

  st->st_mode = S_IFCHR;

  return 0;

}

int

lseek (int fd, off_t offset, int type)

{

  return _sys_lseek (fd, offset, type);

}

int

open (char *file, int mode, int perms)

{

  return _sys_open (file, mode, perms);

}

int

close (int fd)

{

  return _sys_close (fd);

}

int

getpid ()

{

  return -1;

}

int

kill (int pid, int signal)

{

  exit (signal);

}

#if 0

/* This conflicts with the abort defined in newlib.  */

void

abort ()

{

  exit (6);

}

#endif