svr4_util.h revision 43412 
1/*
2 * Copyright (c) 1998 Mark Newton
3 * Copyright (c) 1994 Christos Zoulas
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef	_SVR4_UTIL_H_
30#define	_SVR4_UTIL_H_
31
32/*#include <compat/common/compat_util.h>*/
33#include <vm/vm.h>
34#include <vm/vm_param.h>
35#include <vm/pmap.h>
36#include <machine/vmparam.h>
37#include <sys/exec.h>
38#include <sys/sysent.h>
39#include <sys/cdefs.h>
40
41#ifdef DEBUG_SVR4
42#define DPRINTF(a)	uprintf a;
43#else
44#define DPRINTF(a)
45#endif
46
47
48static __inline caddr_t stackgap_init(void);
49static __inline void *stackgap_alloc(caddr_t *, size_t);
50
51static __inline caddr_t
52stackgap_init()
53{
54#define szsigcode (*(curproc->p_sysent->sv_szsigcode))
55        return (caddr_t)(((caddr_t)PS_STRINGS) - szsigcode - SPARE_USRSPACE);
56}
57
58static __inline void *
59stackgap_alloc(sgp, sz)
60	caddr_t	*sgp;
61	size_t   sz;
62{
63	void	*p = (void *) *sgp;
64	*sgp += ALIGN(sz);
65	return p;
66}
67
68extern const char svr4_emul_path[];
69int svr4_emul_find __P((struct proc *, caddr_t *, const char *, char *,
70			char **, int));
71
72#define CHECKALTEXIST(p, sgp, path) \
73    svr4_emul_find(p, sgp, svr4_emul_path, path, &(path), 0)
74
75#define CHECKALTCREAT(p, sgp, path) \
76    svr4_emul_find(p, sgp, svr4_emul_path, path, &(path), 1)
77
78#endif /* !_SVR4_UTIL_H_ */
79