155127Storek /* 263320Sbostic * Copyright (c) 1992, 1993 363320Sbostic * The Regents of the University of California. All rights reserved. 4*66437Sbostic * (c) UNIX System Laboratories, Inc. 5*66437Sbostic * All or some portions of this file are derived from material licensed 6*66437Sbostic * to the University of California by American Telephone and Telegraph 7*66437Sbostic * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8*66437Sbostic * the permission of UNIX System Laboratories, Inc. 955127Storek * 1055127Storek * This software was developed by the Computer Systems Engineering group 1155127Storek * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 1255127Storek * contributed to Berkeley. 1355127Storek * 1455501Sbostic * All advertising materials mentioning features or use of this software 1555501Sbostic * must display the following acknowledgement: 1655501Sbostic * This product includes software developed by the University of 1759211Storek * California, Lawrence Berkeley Laboratory. 1855501Sbostic * 1955127Storek * %sccs.include.redist.c% 2055127Storek * 21*66437Sbostic * @(#)varargs.h 8.3 (Berkeley) 03/22/94 2255127Storek * 2364667Storek * from: $Header: varargs.h,v 1.8 93/09/27 00:53:20 torek Exp $ 2455127Storek */ 2555127Storek 2655127Storek #ifndef _MACHINE_VARARGS_H_ 2755127Storek #define _MACHINE_VARARGS_H_ 2855127Storek 2959792Storek typedef char *va_list; 3059792Storek 3156566Storek /* See <machine/stdarg.h> for comments. */ 3256566Storek #if __GNUC__ == 1 3356566Storek #define __extension__ 3459792Storek #define va_dcl int va_alist; 3564667Storek #else /* gcc2 */ 3664667Storek #ifdef __GCC_NEW_VARARGS__ /* gcc 2.4.5 */ 3764667Storek #define va_alist __builtin_va_alist 3864667Storek #define va_dcl int __builtin_va_alist; 3964667Storek #else /* gcc 2.3.3 */ 4059792Storek #define va_dcl int va_alist; ... 4156566Storek #endif 4264667Storek #endif 4355127Storek 4464667Storek #ifdef __GCC_NEW_VARARGS__ 4564667Storek #define va_start(ap) ((ap) = (char *)__builtin_saveregs()) 4664667Storek #else 4759792Storek #define va_start(ap) (__builtin_saveregs(), (ap) = (char *)&va_alist) 4864667Storek #endif 4959792Storek #define va_end(ap) /* empty */ 5059792Storek 5159792Storek /* Note, we can assume C code here; C++ does not use <varargs.h>. */ 5259792Storek #define __va_8byte(ap, ty) ({ \ 5359792Storek union { ty __d; int __i[2]; } __va_u; \ 5459792Storek __va_u.__i[0] = ((int *)(void *)(ap))[0]; \ 5559792Storek __va_u.__i[1] = ((int *)(void *)(ap))[1]; \ 5659792Storek (ap) += 8; __va_u.__d; }) 5759792Storek #define va_arg(ap, ty) __extension__ ({ \ 5859792Storek ty __va_temp; \ 5959792Storek __builtin_classify_type(__va_temp) >= 12 ? \ 6059792Storek ((ty **)(void *)((ap) += sizeof(ty *)))[-1][0] : \ 6159792Storek sizeof(ty) == 8 ? __va_8byte(ap, ty) : \ 6259792Storek ((ty *)(void *)(ap += sizeof(ty)))[-1]; }) 6359792Storek 6455127Storek #endif /* !_MACHINE_VARARGS_H_ */ 65