c-newlib-reent.cpp

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/*
 * This file is part of the µOS++ project (https://micro-os-plus.github.io/).
 * Copyright (c) 2015-2025 Liviu Ionescu. All rights reserved.
 *
 * Permission to use, copy, modify, and/or distribute this software
 * for any purpose is hereby granted, under the terms of the MIT license.
 *
 * If a copy of the license was not distributed with this file, it can
 * be obtained from https://opensource.org/licenses/mit.
 */
 
#if defined(__clang__)
#pragma clang diagnostic ignored "-Wempty-translation-unit"
#endif
 
// ----------------------------------------------------------------------------
 
#if defined(__ARM_EABI__)
 
// ----------------------------------------------------------------------------
 
#include <cmsis-plus/posix-io/types.h>
 
// ----------------------------------------------------------------------------
 
extern "C"
{
 
  // Many newlib functions call the reentrant versions right away,
  // and these call the _name() implementations. To avoid this, the
  // shortcut is to simply skip the reentrant code (ignore the pointer)
  // and directly call the posix implementation.
 
#pragma GCC diagnostic push
#if defined(__clang__)
#elif defined(__GNUC__)
#pragma GCC diagnostic ignored "-Wmissing-declarations"
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
 
  int __attribute__ ((weak))
  _close_r (void* ptr, int fildes)
  {
    return __posix_close (fildes);
  }
 
  int __attribute__ ((weak))
  _execve_r (void* ptr, const char* path, char* const argv[],
             char* const envp[])
  {
    return __posix_execve (path, argv, envp);
  }
 
  int __attribute__ ((weak))
  _fcntl_r (void* ptr, int fildes, int cmd, int arg)
  {
    return __posix_fcntl (fildes, cmd, arg);
  }
 
  pid_t __attribute__ ((weak))
  _fork_r (void* ptr)
  {
    return __posix_fork ();
  }
 
#pragma GCC diagnostic push
#if defined(__clang__)
#elif defined(__GNUC__)
#pragma GCC diagnostic ignored "-Wredundant-tags"
#endif
  int __attribute__ ((weak))
  _fstat_r (void* ptr, int fildes, struct stat* buf)
  {
    return __posix_fstat (fildes, buf);
  }
#pragma GCC diagnostic pop
 
  pid_t __attribute__ ((weak))
  _getpid_r (void* ptr)
  {
    return __posix_getpid ();
  }
 
  int __attribute__ ((weak))
  _gettimeofday_r (void* ptr, /* struct */ timeval* ptimeval, void* ptimezone)
  {
    return __posix_gettimeofday (ptimeval, ptimezone);
  }
 
  int __attribute__ ((weak))
  _isatty_r (void* ptr, int fildes)
  {
    return __posix_isatty (fildes);
  }
 
  int __attribute__ ((weak))
  _kill_r (void* ptr, pid_t pid, int sig)
  {
    return __posix_kill (pid, sig);
  }
 
  int __attribute__ ((weak))
  _link_r (void* ptr, const char* existing, const char* _new)
  {
    return __posix_link (existing, _new);
  }
 
  off_t __attribute__ ((weak))
  _lseek_r (void* ptr, int fildes, off_t offset, int whence)
  {
    return __posix_lseek (fildes, offset, whence);
  }
 
  int __attribute__ ((weak))
  _mkdir_r (void* ptr, const char* path, mode_t mode)
  {
    return __posix_mkdir (path, mode);
  }
 
  int __attribute__ ((weak))
  _open_r (void* ptr, const char* path, int oflag, int mode)
  {
    return __posix_open (path, oflag, mode);
  }
 
  ssize_t __attribute__ ((weak))
  _read_r (void* ptr, int fildes, void* buf, size_t nbyte)
  {
    return __posix_read (fildes, buf, nbyte);
  }
 
  int __attribute__ ((weak))
  _rename_r (void* ptr, const char* oldfn, const char* newfn)
  {
    return __posix_rename (oldfn, newfn);
  }
 
#pragma GCC diagnostic push
#if defined(__clang__)
#elif defined(__GNUC__)
#pragma GCC diagnostic ignored "-Wredundant-tags"
#endif
  int __attribute__ ((weak))
  _stat_r (void* ptr, const char* path, struct stat* buf)
  {
    return __posix_stat (path, buf);
  }
#pragma GCC diagnostic pop
 
  clock_t __attribute__ ((weak))
  _times_r (void* ptr, /* struct */ tms* buf)
  {
    return __posix_times (buf);
  }
 
  int __attribute__ ((weak))
  _unlink_r (void* ptr, const char* name)
  {
    return __posix_unlink (name);
  }
 
  pid_t __attribute__ ((weak))
  _wait_r (void* ptr, int* stat_loc)
  {
    return __posix_wait (stat_loc);
  }
 
  ssize_t __attribute__ ((weak))
  _write_r (void* ptr, int fildes, const void* buf, size_t nbyte)
  {
    return __posix_write (fildes, buf, nbyte);
  }
 
  // --------------------------------------------------------------------------
 
#pragma GCC diagnostic pop
}
 
// ----------------------------------------------------------------------------
 
#endif /* defined(__ARM_EABI__) */