Return to stdarg.h CVS log

Up to [local] / sys / arch / sparc / include

Annotation of sys/arch/sparc/include/stdarg.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: stdarg.h,v 1.13 2006/04/09 03:07:53 deraadt Exp $     */
                      2: /*     $NetBSD: stdarg.h,v 1.10 1996/12/27 20:55:28 pk Exp $ */
                      3:
                      4: /*
                      5:  * Copyright (c) 1992, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * This software was developed by the Computer Systems Engineering group
                      9:  * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
                     10:  * contributed to Berkeley.
                     11:  *
                     12:  * All advertising materials mentioning features or use of this software
                     13:  * must display the following acknowledgement:
                     14:  *     This product includes software developed by the University of
                     15:  *     California, Lawrence Berkeley Laboratory.
                     16:  *
                     17:  * Redistribution and use in source and binary forms, with or without
                     18:  * modification, are permitted provided that the following conditions
                     19:  * are met:
                     20:  * 1. Redistributions of source code must retain the above copyright
                     21:  *    notice, this list of conditions and the following disclaimer.
                     22:  * 2. Redistributions in binary form must reproduce the above copyright
                     23:  *    notice, this list of conditions and the following disclaimer in the
                     24:  *    documentation and/or other materials provided with the distribution.
                     25:  * 3. Neither the name of the University nor the names of its contributors
                     26:  *    may be used to endorse or promote products derived from this software
                     27:  *    without specific prior written permission.
                     28:  *
                     29:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     30:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     31:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     32:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     33:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     34:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     35:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     36:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     37:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     38:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     39:  * SUCH DAMAGE.
                     40:  *
                     41:  *     from: @(#)stdarg.h      8.2 (Berkeley) 9/27/93
                     42:  */
                     43:
                     44: #ifndef _SPARC_STDARG_H_
                     45: #define        _SPARC_STDARG_H_
                     46:
                     47: #include <sys/cdefs.h>
                     48: #include <machine/_types.h>
                     49:
                     50: #ifdef __lint__
                     51: #define        __builtin_classify_type(t)      (0)
                     52: #endif
                     53:
                     54: typedef __va_list      va_list;
                     55:
                     56: #define        __va_size(type) \
                     57:        (((sizeof(type) + sizeof(long) - 1) / sizeof(long)) * sizeof(long))
                     58:
                     59: #ifdef lint
                     60: #define        va_start(ap,lastarg)    ((ap) = (ap))
                     61: #else
                     62: #define        va_start(ap, last) \
                     63:        (__builtin_next_arg(last), (ap) = (va_list)__builtin_saveregs())
                     64: #endif /* lint */
                     65:
                     66: /*
                     67:  * va_arg picks up the next argument of type `type'.  Appending an
                     68:  * asterisk to `type' must produce a pointer to `type' (i.e., `type'
                     69:  * may not be, e.g., `int (*)()').
                     70:  *
                     71:  * Gcc-2.x tries to use ldd/std for double and quad_t values, but Sun's
                     72:  * brain-damaged calling convention does not quad-align these.  Thus, for
                     73:  * 8-byte arguments, we have to pick up the actual value four bytes at a
                     74:  * time, and use type punning (i.e., a union) to produce the result.
                     75:  * (We could also do this with a libc function, actually, by returning
                     76:  * 8 byte integers in %o0+%o1 and the same 8 bytes as a double in %f0+%f1.)
                     77:  *
                     78:  * Note: We don't declare __d with type `type', since in C++ the type might
                     79:  * have a constructor.
                     80:  */
                     81: #define        __va_8byte(ap, type) \
                     82:        __statement({                                                   \
                     83:                union { char __d[sizeof(type)]; int __i[2]; } __va_u;   \
                     84:                __va_u.__i[0] = ((int *)(void *)(ap))[0];               \
                     85:                __va_u.__i[1] = ((int *)(void *)(ap))[1];               \
                     86:                (ap) += 8; *(type *)(va_list)__va_u.__d;                \
                     87:        })
                     88:
                     89: #define        __va_arg(ap, type) \
                     90:        (*(type *)((ap) += __va_size(type),                     \
                     91:                   (ap) - (sizeof(type) < sizeof(long) &&       \
                     92:                           sizeof(type) != __va_size(type) ?    \
                     93:                           sizeof(type) : __va_size(type))))
                     94:
                     95: #define        __RECORD_TYPE_CLASS     12
                     96: #define va_arg(ap, type) \
                     97:        (__builtin_classify_type(*(type *)0) >= __RECORD_TYPE_CLASS ?   \
                     98:         *__va_arg(ap, type *) : __va_size(type) == 8 ?                 \
                     99:         __va_8byte(ap, type) : __va_arg(ap, type))
                    100:
                    101: #if __ISO_C_VISIBLE >= 1999
                    102: #define va_copy(dest, src) \
                    103:        ((dest) = (src))
                    104: #endif
                    105:
                    106: #define va_end(ap)
                    107:
                    108: #endif /* !_SPARC_STDARG_H_ */