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/**
* @file
*
* @brief Newlib Support
* @ingroup libcsupport
*/
/*
* 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.
*
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#define __RTEMS_VIOLATE_KERNEL_VISIBILITY__
#include <rtems.h>
#if defined(RTEMS_NEWLIB)
#include <sys/reent.h>
#include <stdlib.h>
#include <stdio.h>
#include <rtems/libcsupport.h>
int _fwalk(struct _reent *ptr, int (*function) (FILE *) );
bool newlib_create_hook(
rtems_tcb *current_task __attribute__((unused)),
rtems_tcb *creating_task
)
{
struct _reent *ptr;
bool ok;
if (_Thread_libc_reent == 0)
{
_REENT = _GLOBAL_REENT;
_Thread_Set_libc_reent (&_REENT);
}
/* It is OK to allocate from the workspace because these
* hooks run with thread dispatching disabled.
*/
ptr = (struct _reent *) _Workspace_Allocate(sizeof(*ptr));
creating_task->libc_reent = ptr;
ok = ptr != NULL;
if (ok) {
_REENT_INIT_PTR((ptr)); /* GCC extension: structure constants */
}
return ok;
}
static int newlib_free_buffers(
FILE *fp
)
{
switch ( fileno(fp) ) {
case 0:
case 1:
case 2:
if (fp->_flags & __SMBF) {
free( fp->_bf._base );
fp->_flags &= ~__SMBF;
fp->_bf._base = fp->_p = (unsigned char *) NULL;
}
break;
default:
fclose(fp);
}
return 0;
}
void newlib_delete_hook(
rtems_tcb *current_task,
rtems_tcb *deleted_task
)
{
struct _reent *ptr;
ptr = deleted_task->libc_reent;
deleted_task->libc_reent = NULL;
/*
* Just in case there are some buffers lying around.
*/
_fwalk(ptr, newlib_free_buffers);
_Workspace_Free(ptr);
}
#endif
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