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 25