2 * Copyright (c) 1998 Mark Newton
3 * Copyright (c) 1994 Christos Zoulas
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
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
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.
34 /*#include <compat/common/compat_util.h>*/
36 #include <vm/vm_param.h>
38 #include <machine/vmparam.h>
40 #include <sys/sysent.h>
41 #include <sys/cdefs.h>
45 #define DPRINTF(a) uprintf a;
51 static __inline caddr_t stackgap_init(void);
52 static __inline void *stackgap_alloc(caddr_t *, size_t);
54 static __inline caddr_t
57 #define szsigcode (*(curthread->td_proc->p_sysent->sv_szsigcode))
58 return (caddr_t)(((caddr_t)PS_STRINGS) - szsigcode - SPARE_USRSPACE);
61 static __inline void *
62 stackgap_alloc(sgp, sz)
66 void *p = (void *) *sgp;
68 if (*sgp + sz > (caddr_t)(PS_STRINGS - szsigcode))
74 int svr4_emul_find(struct thread *, char *, enum uio_seg, char **, int);
76 #define CHECKALT(td, upath, pathp, i) \
80 _error = svr4_emul_find(td, upath, UIO_USERSPACE, pathp, i); \
81 if (*(pathp) == NULL) \
85 #define CHECKALTEXIST(td, upath, pathp) CHECKALT(td, upath, pathp, 0)
86 #define CHECKALTCREAT(td, upath, pathp) CHECKALT(td, upath, pathp, 1)
88 #endif /* !_SVR4_UTIL_H_ */