1 /*-
2 * Copyright (c) 1994 Christos Zoulas
3 * Copyright (c) 1995 Frank van der Linden
4 * Copyright (c) 1995 Scott Bartram
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp
30 * from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp
31 *
32 * $FreeBSD: releng/5.4/sys/i386/ibcs2/ibcs2_util.h 141090 2005-01-31 23:27:04Z imp $
33 */
34
35 /*
36 * This file is pretty much the same as Christos' svr4_util.h
37 * (for now).
38 */
39
40 #ifndef _IBCS2_UTIL_H_
41 #define _IBCS2_UTIL_H_
42
43 /*
44 * XXX the inlines have obnoxious prerequisites, only some of which are
45 * included here.
46 */
47 #include <vm/vm.h>
48 #include <vm/pmap.h>
49 #include <machine/vmparam.h>
50 #include <sys/exec.h>
51 #include <sys/sysent.h>
52 #include <sys/proc.h>
53
54 static __inline caddr_t stackgap_init(void);
55 static __inline void *stackgap_alloc(caddr_t *, size_t);
56
57 static __inline caddr_t
58 stackgap_init()
59 {
60 #define szsigcode (*(curthread->td_proc->p_sysent->sv_szsigcode))
61 return (caddr_t)(PS_STRINGS - szsigcode - SPARE_USRSPACE);
62 }
63
64 static __inline void *
65 stackgap_alloc(sgp, sz)
66 caddr_t *sgp;
67 size_t sz;
68 {
69 void *p = (void *) *sgp;
70 sz = ALIGN(sz);
71 if (*sgp + sz > (caddr_t)(PS_STRINGS - szsigcode))
72 return NULL;
73 *sgp += 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
83 extern const char ibcs2_emul_path[];
84
85 int ibcs2_emul_find(struct thread *, caddr_t *, const char *, char *,
86 char **, int);
87
88 #define CHECKALTEXIST(p, sgp, path) \
89 ibcs2_emul_find(td, sgp, ibcs2_emul_path, path, &(path), 0)
90
91 #define CHECKALTCREAT(p, sgp, path) \
92 ibcs2_emul_find(td, sgp, ibcs2_emul_path, path, &(path), 1)
93
94 #ifdef SPX_HACK
95 int spx_open(struct thread *td, void *uap);
96 #endif
97
98 #endif /* !_IBCS2_UTIL_H_ */
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