7ee2311b78
cpu.h: cpu_adjstack() won't work well in the NetBSD execve - need a different model, stub enablertclock() for now.. exec.h: a netbsd-type exec.h file (ie. empty) param.h: add MID_MACHINE pmap.h: delete kernel_pmap hack - it doesn't work for us, + two proto's vmparam.h: VM_MIN_ADDRESS = 0!
118 lines
4.7 KiB
C
118 lines
4.7 KiB
C
/*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)stdarg.h 8.1 (Berkeley) 6/11/93
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*
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* from: Header: stdarg.h,v 1.8 93/05/07 18:10:14 torek Exp
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* $Id: stdarg.h,v 1.2 1993/10/11 02:28:30 deraadt Exp $
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*/
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/*
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* SPARC stdarg.h
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*/
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#ifndef _MACHINE_STDARG_H
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#define _MACHINE_STDARG_H
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typedef char *va_list;
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/*
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* va_start sets ap to point to the first variable argument.
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* The `last fixed argument' parameter l is ignored (and should
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* never have been included in the ANSI standard!).
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*
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* va_end cleans up after va_start. There is nothing to do there.
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*/
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#ifdef __GCC_NEW_VARARGS__ /* gcc 2.4.5 */
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#define va_start(ap, l) ((ap) = (char *)__builtin_saveregs())
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#else /* gcc 2.3.3 */
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#define va_start(ap, l) (__builtin_saveregs(), \
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(ap) = (char *)__builtin_next_arg())
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#endif
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#define va_end(ap) /* empty */
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#if __GNUC__ == 1
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#define __extension__ /* hack for bootstrapping via gcc 1.x */
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#endif
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/*
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* va_arg picks up the next argument of type `ty'. Appending an
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* asterisk to ty must produce a pointer to ty (i.e., ty may not be,
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* e.g., `int (*)()'). In addition, ty must not be any type which
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* undergoes promotion to some other type (e.g., char): it must
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* be the promoted type instead.
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*
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* Gcc-2.x tries to use ldd/std for double and quad_t values, but Sun's
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* brain-damaged calling convention does not quad-align these. Thus,
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* for 8-byte arguments, we have to pick up the actual value four bytes
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* at a time, and use type punning (i.e., a union) to produce the result.
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* (We could also do this with a libc function, actually, by returning
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* 8 byte integers in %o0+%o1 and the same 8 bytes as a double in %f0+%f1.)
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*
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* Note: we cannot use the union trick (which generates better code) for
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* C++, since `ty' might be a type with a constructor (these may not appear
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* in a union).
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*
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* The extraneous casts through `void *' avoid gcc alignment warnings.
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*/
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#ifdef __cplusplus
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#define __va_8byte(ap, ty) ({ \
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int __va_i[2]; \
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__va_i[0] = ((int *)(void *)(ap))[0]; \
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__va_i[1] = ((int *)(void *)(ap))[1]; \
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(ap) += 8; *(ty *)(void *)__va_i; })
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#else
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#define __va_8byte(ap, ty) ({ \
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union { ty __d; int __i[2]; } __va_u; \
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__va_u.__i[0] = ((int *)(void *)(ap))[0]; \
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__va_u.__i[1] = ((int *)(void *)(ap))[1]; \
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(ap) += 8; __va_u.__d; })
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#endif /* __cplusplus */
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#define va_arg(ap, ty) __extension__ ({ \
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ty __va_temp; /* to check for invisible-ptr struct-valued args */ \
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__builtin_classify_type(__va_temp) >= 12 ? \
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((ty **)(void *)((ap) += sizeof(ty *)))[-1][0] : \
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sizeof(ty) == 8 ? __va_8byte(ap, ty) : \
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((ty *)(void *)(ap += sizeof(ty)))[-1]; })
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#endif /* _MACHINE_STDARG_H */
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