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/*
* Implementation of hooks for the CYGNUS newlib libc
* These hooks set things up so that:
* + '_REENT' is switched at task switch time.
*
* COPYRIGHT (c) 1994 by Division Incorporated
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#define __RTEMS_VIOLATE_KERNEL_VISIBILITY__
#include <rtems.h>
#if defined(RTEMS_NEWLIB)
#include <rtems/libcsupport.h>
/* Since we compile with strict ANSI we need to undef it to get
* prototypes for extensions
*/
#undef __STRICT_ANSI__
#include <stdlib.h> /* for free() */
#include <string.h> /* for memset() */
#include <sys/reent.h> /* for extern of _REENT (aka _impure_ptr) */
#include <errno.h>
#include <stdio.h>
int _fwalk(struct _reent *ptr, int (*function) (FILE *) );
/* do we think we are reentrant? */
extern int libc_reentrant;
extern struct _reent libc_global_reent __ATTRIBUTE_IMPURE_PTR__;
/*
* CYGNUS newlib routine that does atexit() processing and flushes
* stdio streams
* undocumented
*/
extern void _wrapup_reent(struct _reent *);
extern void _reclaim_reent(struct _reent *);
void libc_wrapup(void)
{
/*
* In case RTEMS is already down, don't do this. It could be
* dangerous.
*/
if (!_System_state_Is_up(_System_state_Get()))
return;
/*
* This was already done if the user called exit() directly .
_wrapup_reent(0);
*/
if (_REENT != &libc_global_reent) {
_wrapup_reent(&libc_global_reent);
#if 0
/* Don't reclaim this one, just in case we do printfs
* on the way out to ROM.
*/
_reclaim_reent(&libc_global_reent);
#endif
_REENT = &libc_global_reent;
}
/*
* Try to drain output buffers.
*
* Should this be changed to do *all* file streams?
* _fwalk (_REENT, fclose);
*/
fclose (stdin);
fclose (stdout);
fclose (stderr);
}
/*
* Function: _exit
* Created: 94/12/10
*
* Description:
* Called from exit() after it does atexit() processing and stdio fflush's
*
* called from bottom of exit() to really delete the task.
* If we are using reentrant libc, then let the delete extension
* do all the work, otherwise if a shutdown is in progress,
* then just do it.
*
* Parameters:
* exit status
*
* Returns:
* does not return
*
* Side Effects:
*
* Notes:
*
*
* Deficiencies/ToDo:
*
*
*/
#include <unistd.h>
#if !defined(RTEMS_UNIX)
#define EXIT_SYMBOL _exit
#if defined(__USE_INIT_FINI__)
extern void _fini( void );
#endif
#else
#define EXIT_SYMBOL exit
#endif
void EXIT_SYMBOL(int status)
{
/*
* If the toolset uses init/fini sections, then we need to
* run the global destructors now.
*/
#if defined(__USE_INIT_FINI__)
_fini();
#endif
/*
* We need to do the exit processing on the global reentrancy structure.
* This has already been done on the per task reentrancy structure
* associated with this task.
*/
libc_wrapup();
rtems_shutdown_executive(status);
for (;;) ; /* to avoid warnings */
}
#endif
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