ibcs2_util.h revision 28750 
1
2/*
3 * Copyright (c) 1994 Christos Zoulas
4 * Copyright (c) 1995 Frank van der Linden
5 * Copyright (c) 1995 Scott Bartram
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 *    derived from this software without specific prior written permission
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 *
30 * from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp
31 * from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp
32 */
33
34/*
35 * This file is pretty much the same as Christos' svr4_util.h
36 * (for now).
37 */
38
39#ifndef	_IBCS2_UTIL_H_
40#define	_IBCS2_UTIL_H_
41
42/*
43 * XXX the inlines have obnoxious prerequisites, only some of which are
44 * included here.
45 */
46#include <vm/vm.h>
47#include <vm/pmap.h>
48#include <machine/vmparam.h>
49#include <sys/exec.h>
50#include <sys/sysent.h>
51#include <sys/proc.h>
52
53#ifndef SCARG
54#define SCARG(p, x)  (p)->x
55#endif
56
57static __inline caddr_t stackgap_init(void);
58static __inline void *stackgap_alloc(caddr_t *, size_t);
59
60static __inline caddr_t
61stackgap_init()
62{
63#define szsigcode (*(curproc->p_sysent->sv_szsigcode))
64        return (caddr_t)(((caddr_t)PS_STRINGS) - szsigcode - SPARE_USRSPACE);
65}
66
67static __inline void *
68stackgap_alloc(sgp, sz)
69	caddr_t	*sgp;
70	size_t   sz;
71{
72	void	*p = (void *) *sgp;
73	*sgp += ALIGN(sz);
74	return p;
75}
76
77#ifdef DEBUG_IBCS2
78#define DPRINTF(a)      printf a;
79#else
80#define DPRINTF(a)
81#endif
82
83extern const char ibcs2_emul_path[];
84
85int ibcs2_emul_find __P((struct proc *, caddr_t *, const char *, char *,
86			char **, int));
87
88#define CHECKALTEXIST(p, sgp, path) \
89    ibcs2_emul_find(p, sgp, ibcs2_emul_path, path, &(path), 0)
90
91#define CHECKALTCREAT(p, sgp, path) \
92    ibcs2_emul_find(p, sgp, ibcs2_emul_path, path, &(path), 1)
93
94#ifdef SPX_HACK
95int spx_open __P((struct proc *p, void *uap, int *retval));
96#endif
97
98#endif /* !_IBCS2_UTIL_H_ */
99