/* SPDX-License-Identifier: BSD-2-Clause */

/**
 * @file
 *
 * @ingroup RTEMSImplApplConfig
 *
 * @brief This header file evaluates configuration options related to the
 *   Newlib C Library configuration.
 *
 * This header file defines _CONFIGURE_ENABLE_NEWLIB_REENTRANCY for use by other
 * configuration header files.
 */

/*
 * Copyright (C) 2020 embedded brains GmbH & Co. KG
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _RTEMS_CONFDEFS_NEWLIB_H
#define _RTEMS_CONFDEFS_NEWLIB_H

#ifndef __CONFIGURATION_TEMPLATE_h
#error "Do not include this file directly, use <rtems/confdefs.h> instead"
#endif

#ifdef CONFIGURE_INIT

#if defined(RTEMS_NEWLIB) && !defined(CONFIGURE_DISABLE_NEWLIB_REENTRANCY)
  #include <rtems/score/percpu.h>
  #include <rtems/score/thread.h>
  #include <sys/reent.h>
  #define _CONFIGURE_ENABLE_NEWLIB_REENTRANCY
#endif

#ifdef __cplusplus
extern "C" {
#endif

#if defined(_CONFIGURE_ENABLE_NEWLIB_REENTRANCY) && \
  !defined(_REENT_THREAD_LOCAL)
  struct _reent *__getreent( void )
  {
    return _Thread_Get_executing()->libc_reent;
  }
#endif

#ifdef __cplusplus
}
#endif

#endif /* CONFIGURE_INIT */

#endif /* _RTEMS_CONFDEFS_NEWLIB_H */