libc/src/stdio/baremetal/putchar.cpp

   1 //===-- Baremetal Implementation of putchar -------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/stdio/putchar.h"
  10 #include "src/__support/CPP/string_view.h"
  11 #include "src/__support/OSUtil/io.h"
  12 #include "src/__support/macros/config.h"
  13
  14 namespace LIBC_NAMESPACE_DECL {
  15
  16 LLVM_LIBC_FUNCTION(int, putchar, (int c)) {
  17   char uc = static_cast<char>(c);
  18
  19   write_to_stderr(cpp::string_view(&uc, 1));
  20
  21   return 0;
  22 }
  23
  24 } // namespace LIBC_NAMESPACE_DECL