linux/tools/include/nolibc/stdarg.h
Thomas Weißschuh b56a9492d0 tools/nolibc: add stdarg.h header
This allows nolic to work with `-nostdinc` avoiding any reliance on
system headers.

The implementation has been lifted from musl libc 1.2.4.
There is already an implementation of stdarg.h in include/linux/stdarg.h
but that is GPL licensed and therefore not suitable for nolibc.

The used compiler builtins have been validated to be at least available
since GCC 4.1.2 and clang 3.0.0.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Signed-off-by: Willy Tarreau <w@1wt.eu>
2023-10-12 21:13:52 +02:00

17 lines
451 B
C

/* SPDX-License-Identifier: LGPL-2.1 OR MIT */
/*
* Variadic argument support for NOLIBC
* Copyright (C) 2005-2020 Rich Felker, et al.
*/
#ifndef _NOLIBC_STDARG_H
#define _NOLIBC_STDARG_H
typedef __builtin_va_list va_list;
#define va_start(v, l) __builtin_va_start(v, l)
#define va_end(v) __builtin_va_end(v)
#define va_arg(v, l) __builtin_va_arg(v, l)
#define va_copy(d, s) __builtin_va_copy(d, s)
#endif /* _NOLIBC_STDARG_H */