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Diffstat (limited to 'sys/amd64/include/varargs.h')
| -rw-r--r-- | sys/amd64/include/varargs.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/sys/amd64/include/varargs.h b/sys/amd64/include/varargs.h new file mode 100644 index 000000000000..93faac6a84dd --- /dev/null +++ b/sys/amd64/include/varargs.h @@ -0,0 +1,89 @@ +/*- + * Copyright (c) 2002 David E. O'Brien. All rights reserved. + * Copyright (c) 1990, 1993 + * The Regents of the University of California. All rights reserved. + * (c) UNIX System Laboratories, Inc. + * All or some portions of this file are derived from material licensed + * to the University of California by American Telephone and Telegraph + * Co. or Unix System Laboratories, Inc. and are reproduced herein with + * the permission of UNIX System Laboratories, Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * @(#)varargs.h 8.2 (Berkeley) 3/22/94 + * $FreeBSD$ + */ + +#ifndef _MACHINE_VARARGS_H_ +#define _MACHINE_VARARGS_H_ + +#ifndef _SYS_CDEFS_H_ +#error this file needs sys/cdefs.h as a prerequisite +#endif + +#ifdef __GNUCLIKE_BUILTIN_VARARGS + +#include <sys/_types.h> + +#ifndef _VA_LIST_DECLARED +#define _VA_LIST_DECLARED +typedef __va_list va_list; +#endif + +typedef int __builtin_va_alist_t __attribute__((__mode__(__word__))); + +#define va_alist __builtin_va_alist +#define va_dcl __builtin_va_alist_t __builtin_va_alist; ... +#define va_start(ap) __builtin_varargs_start(ap) +#define va_arg(ap, type) __builtin_va_arg((ap), type) +#define va_end(ap) __builtin_va_end(ap) + +#else /* !__GNUCLIKE_BUILTIN_VARARGS */ + +typedef char *va_list; + +#define __va_size(type) \ + (((sizeof(type) + sizeof(int) - 1) / sizeof(int)) * sizeof(int)) + +#if defined(__GNUCLIKE_BUILTIN_VAALIST) +#define va_alist __builtin_va_alist +#endif +#define va_dcl int va_alist; ... + +#define va_start(ap) \ + ((ap) = (va_list)&va_alist) + +#define va_arg(ap, type) \ + (*(type *)((ap) += __va_size(type), (ap) - __va_size(type))) + +#define va_end(ap) + +#endif /* __GNUCLIKE_BUILTIN_VARARGS */ + +#endif /* !_MACHINE_VARARGS_H_ */ |