src/__support/File/baremetal/stdin.cpp

//===--- Definition of baremetal stdin ------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#include "hdr/stdio_macros.h"
#include "src/__support/File/cookie_file.h"
#include "src/__support/File/file.h"
#include "src/__support/OSUtil/baremetal/io.h"
#include "src/__support/macros/config.h"

namespace LIBC_NAMESPACE_DECL {

cookie_io_functions_t io_func = {.read = __llvm_libc_stdio_read,
                                 .write = nullptr,
                                 .seek = nullptr,
                                 .close = nullptr};
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wglobal-constructors"
// Buffering is implementation defined. Therefore to save RAM, we use no
// buffering
static CookieFile StdIn(&__llvm_libc_stdin_cookie, io_func, nullptr, 0, _IONBF,
                        File::mode_flags("r"));
#pragma clang diagnostic pop
File *stdin = &StdIn;

} // namespace LIBC_NAMESPACE_DECL

extern "C" {
FILE *stdin = reinterpret_cast<FILE *>(&LIBC_NAMESPACE::StdIn);
}