ibcs2_util.h revision 12662 
1112354Scjc
2112354Scjc/*
3112354Scjc * Copyright (c) 1994 Christos Zoulas
4112354Scjc * Copyright (c) 1995 Frank van der Linden
5112354Scjc * Copyright (c) 1995 Scott Bartram
6112354Scjc * All rights reserved.
7112354Scjc *
8112354Scjc * Redistribution and use in source and binary forms, with or without
9112354Scjc * modification, are permitted provided that the following conditions
10112354Scjc * are met:
11112354Scjc * 1. Redistributions of source code must retain the above copyright
12112354Scjc *    notice, this list of conditions and the following disclaimer.
13112354Scjc * 2. Redistributions in binary form must reproduce the above copyright
14112354Scjc *    notice, this list of conditions and the following disclaimer in the
15112354Scjc *    documentation and/or other materials provided with the distribution.
16112354Scjc * 3. The name of the author may not be used to endorse or promote products
17112354Scjc *    derived from this software without specific prior written permission
18112354Scjc *
19112354Scjc * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20112354Scjc * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21112354Scjc * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22112354Scjc * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23112354Scjc * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24112354Scjc * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25112354Scjc * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26112354Scjc * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27112354Scjc * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28112354Scjc * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29112354Scjc *
30112354Scjc * from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp
31112354Scjc * from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp
32112354Scjc */
33112354Scjc
34112354Scjc/*
35112354Scjc * 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#include <vm/vm.h>
43#include <vm/vm_param.h>
44#include <vm/pmap.h>
45#include <machine/vmparam.h>
46#include <sys/exec.h>
47#include <sys/cdefs.h>
48
49#ifndef SCARG
50#define SCARG(p, x)  (p)->x
51#endif
52
53static __inline caddr_t stackgap_init(void);
54static __inline void *stackgap_alloc(caddr_t *, size_t);
55
56static __inline caddr_t
57stackgap_init()
58{
59#define szsigcode ((caddr_t)(esigcode - sigcode))
60	return (caddr_t)(ALIGN(((caddr_t)PS_STRINGS)
61			 + sizeof(struct ps_strings)));
62}
63
64
65static __inline void *
66stackgap_alloc(sgp, sz)
67	caddr_t	*sgp;
68	size_t   sz;
69{
70	void	*p = (void *) *sgp;
71	*sgp += ALIGN(sz);
72	return p;
73}
74
75#ifdef DEBUG_IBCS2
76#define DPRINTF(a)      printf a;
77#else
78#define DPRINTF(a)
79#endif
80
81extern const char ibcs2_emul_path[];
82
83int ibcs2_emul_find __P((struct proc *, caddr_t *, const char *, char *,
84			char **, int));
85
86#define CHECKALTEXIST(p, sgp, path) \
87    ibcs2_emul_find(p, sgp, ibcs2_emul_path, path, &(path), 0)
88
89#define CHECKALTCREAT(p, sgp, path) \
90    ibcs2_emul_find(p, sgp, ibcs2_emul_path, path, &(path), 1)
91
92#endif /* !_IBCS2_UTIL_H_ */
93