From 207296616d94453828e461d5c0c9f6d91a73ed8b Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sat, 29 Aug 2015 21:43:40 +0200 Subject: add errno.h MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- include/errno.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 include/errno.h (limited to 'include') diff --git a/include/errno.h b/include/errno.h new file mode 100644 index 0000000..6a94d76 --- /dev/null +++ b/include/errno.h @@ -0,0 +1,46 @@ +/** + * slibc — Yet another C library + * Copyright © 2015 Mattias Andrée (maandree@member.fsf.org) + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation, either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see . + */ +#ifndef _ERRNO_H +#define _ERRNO_H +#include + + +#include + +/* TODO include error definitions */ + + + +/** + * A modifiable lvalue used to describe an error + * that has occurred in the thread. + */ +#define errno (*__errno()) + + +/** + * Helper definition to `errno` used to + * assured that the value is thread-dependent + * and supported on all revisions of C. + */ +volatile int* __errno(void) __GCC_ONLY(__attribute__((__const__))); /* TODO not implemented */ + + + +#endif + -- cgit v1.2.3-70-g09d2