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/*
* Copyright (c) 1994 Christos Zoulas
* Copyright (c) 1995 Frank van der Linden
* Copyright (c) 1995 Scott Bartram
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp
* from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp
* $Id: linux_util.h,v 1.7 1998/12/16 16:28:57 bde Exp $
*/
/*
* This file is pretty much the same as Christos' svr4_util.h
* (for now).
*/
#ifndef _LINUX_UTIL_H_
#define _LINUX_UTIL_H_
#include "opt_linux.h"
#include <vm/vm.h>
#include <vm/vm_param.h>
#include <vm/pmap.h>
#include <machine/vmparam.h>
#include <sys/exec.h>
#include <sys/sysent.h>
#include <sys/cdefs.h>
#ifndef SCARG
#define SCARG(p, x) (p)->x
#endif
static __inline caddr_t stackgap_init(void);
static __inline void *stackgap_alloc(caddr_t *, size_t);
static __inline caddr_t
stackgap_init()
{
#define szsigcode (*(curproc->p_sysent->sv_szsigcode))
return (caddr_t)(PS_STRINGS - szsigcode - SPARE_USRSPACE);
}
static __inline void *
stackgap_alloc(sgp, sz)
caddr_t *sgp;
size_t sz;
{
void *p = (void *) *sgp;
*sgp += ALIGN(sz);
return p;
}
#ifdef DEBUG_LINUX
#define DPRINTF(a) printf a;
#else
#define DPRINTF(a)
#endif
int linux_emul_find __P((struct proc *, caddr_t *, const char *, char *,
char **, int));
#define CHECKALT(p, sgp, path, i) \
do { \
int _error; \
\
_error = linux_emul_find(p, sgp, linux_emul_path, path, \
&path, i); \
if (_error == EFAULT) \
return (_error); \
} while (0)
#define CHECKALTEXIST(p, sgp, path) CHECKALT(p, sgp, path, 0)
#define CHECKALTCREAT(p, sgp, path) CHECKALT(p, sgp, path, 1)
#endif /* !_LINUX_UTIL_H_ */
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