2 * Copyright (c) 1998-1999 Andrew Gallatin
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
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.
32 #include <vm/vm_param.h>
37 #include <sys/sysent.h>
38 #include <sys/cdefs.h>
40 static __inline caddr_t stackgap_init(void);
41 static __inline void *stackgap_alloc(caddr_t *, size_t);
43 static __inline caddr_t
46 #define szsigcode (*(curproc->p_sysent->sv_szsigcode))
47 return (caddr_t)(((caddr_t)PS_STRINGS) - szsigcode - SPARE_USRSPACE);
50 static __inline void *
51 stackgap_alloc(sgp, sz)
63 int osf1_emul_find(struct thread *td, char *path, enum uio_seg pathseg,
64 char **pbuf, int create);
66 #define CHECKALT(td, upath, pathp, i) \
70 _error = osf1_emul_find(td, upath, UIO_USERSPACE, pathp, i); \
71 if (*(pathp) == NULL) \
75 #define CHECKALTEXIST(td, upath, pathp) CHECKALT((td), (upath), (pathp), 0)
76 #define CHECKALTCREAT(td, upath, pathp) CHECKALT((td), (upath), (pathp), 1)