/* $NetBSD: stdarg.h,v 1.8 1999/05/04 13:36:44 christos Exp $ */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * 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, Lawrence Berkeley Laboratory. * * 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. * * from: @(#)stdarg.h 8.2 (Berkeley) 9/27/93 */ #ifndef _SPARC64_STDARG_H_ #define _SPARC64_STDARG_H_ #include #ifdef __lint__ #define __builtin_saveregs(t) (0) #define __builtin_classify_type(t) (0) #define __builtin_next_arg(t) ((t) ? 0 : 0) #endif typedef _BSD_VA_LIST_ va_list; #define va_start(ap, last) \ (__builtin_next_arg(last), (ap) = (va_list)__builtin_saveregs()) #define va_end(ap) #ifdef __arch64__ /* * For sparcv9 code. */ #define __va_arg(ap, type) \ ((type)*(unsigned long *)((ap) += 8, (ap) - 8)) /* Like __va_arg(), except when the type must be 16-byte aligned. */ #define __va_arg16(ap, type) \ ((type)*(unsigned long *)((__alignof__(type) == 16 ? \ (ap) = (va_list)(((unsigned long)(ap) + 31) & -16) :\ ((ap) += 16)), (ap) - 16)) #define __REAL_TYPE_CLASS 8 #define __RECORD_TYPE_CLASS 12 #define va_arg(ap, type) \ (__builtin_classify_type(*(type *)0) == __REAL_TYPE_CLASS ? \ __va_arg16(ap, type) : \ (__builtin_classify_type(*(type *)0) < __RECORD_TYPE_CLASS ? \ __va_arg(ap, type) : \ (sizeof(type) <= 8 ? __va_arg(ap, type) : \ (sizeof(type) <= 16 ? __va_arg16(ap, type) : \ *__va_arg(ap, type *))))) #else /* * For sparcv8 code. */ #define __va_size(type) \ (((sizeof(type) + sizeof(long) - 1) / sizeof(long)) * sizeof(long)) /* * va_arg picks up the next argument of type `type'. Appending an * asterisk to `type' must produce a pointer to `type' (i.e., `type' * may not be, e.g., `int (*)()'). * * Gcc-2.x tries to use ldd/std for double and quad_t values, but Sun's * brain-damaged calling convention does not quad-align these. Thus, for * 8-byte arguments, we have to pick up the actual value four bytes at a * time, and use type punning (i.e., a union) to produce the result. * (We could also do this with a libc function, actually, by returning * 8 byte integers in %o0+%o1 and the same 8 bytes as a double in %f0+%f1.) * * Note: We don't declare __d with type `type', since in C++ the type might * have a constructor. */ #if __GNUC__ < 2 #define __extension__ #endif #define __va_8byte(ap, type) \ __extension__ ({ \ union { char __d[sizeof(type)]; int __i[2]; } __va_u; \ __va_u.__i[0] = ((int *)(void *)(ap))[0]; \ __va_u.__i[1] = ((int *)(void *)(ap))[1]; \ (ap) += 8; *(type *)(va_list)__va_u.__d; \ }) #define __va_arg(ap, type) \ (*(type *)((ap) += __va_size(type), \ (ap) - (sizeof(type) < sizeof(long) && \ sizeof(type) != __va_size(type) ? \ sizeof(type) : __va_size(type)))) #define __RECORD_TYPE_CLASS 12 #define va_arg(ap, type) \ (__builtin_classify_type(*(type *)0) >= __RECORD_TYPE_CLASS ? \ *__va_arg(ap, type *) : __va_size(type) == 8 ? \ __va_8byte(ap, type) : __va_arg(ap, type)) #endif #endif /* !_SPARC64_STDARG_H_ */