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//===-- Implementation of putchar for baremetal -----------------*- C++ -*-===//
//
// 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 "src/stdio/putchar.h"
#include "hdr/stdio_macros.h" // for EOF
#include "src/__support/common.h"
#include "src/__support/libc_errno.h"
#include "src/__support/macros/config.h"
#include "src/stdio/baremetal/file_internal.h"
namespace LIBC_NAMESPACE_DECL {
LLVM_LIBC_FUNCTION(int, putchar, (int c)) {
unsigned char uc = static_cast<unsigned char>(c);
auto result = write_internal(reinterpret_cast<char *>(&uc), 1, stdout);
if (result.has_error())
libc_errno = result.error;
size_t written = result.value;
if (written != 1) {
// The stream should be in an error state in this case.
return EOF;
}
return 0;
}
} // namespace LIBC_NAMESPACE_DECL
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