svr4_util.h revision 50477
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 * $FreeBSD: head/sys/compat/svr4/svr4_util.h 50477 1999-08-28 01:08:13Z peter $ 29 */ 30 31#ifndef _SVR4_UTIL_H_ 32#define _SVR4_UTIL_H_ 33 34/*#include <compat/common/compat_util.h>*/ 35#include <vm/vm.h> 36#include <vm/vm_param.h> 37#include <vm/pmap.h> 38#include <machine/vmparam.h> 39#include <sys/exec.h> 40#include <sys/sysent.h> 41#include <sys/cdefs.h> 42 43#ifdef DEBUG_SVR4 44#define DPRINTF(a) uprintf a; 45#else 46#define DPRINTF(a) 47#endif 48 49 50static __inline caddr_t stackgap_init(void); 51static __inline void *stackgap_alloc(caddr_t *, size_t); 52 53static __inline caddr_t 54stackgap_init() 55{ 56#define szsigcode (*(curproc->p_sysent->sv_szsigcode)) 57 return (caddr_t)(((caddr_t)PS_STRINGS) - szsigcode - SPARE_USRSPACE); 58} 59 60static __inline void * 61stackgap_alloc(sgp, sz) 62 caddr_t *sgp; 63 size_t sz; 64{ 65 void *p = (void *) *sgp; 66 *sgp += ALIGN(sz); 67 return p; 68} 69 70extern const char svr4_emul_path[]; 71int svr4_emul_find __P((struct proc *, caddr_t *, const char *, char *, 72 char **, int)); 73 74#define CHECKALT(p, sgp, path, i) \ 75 do { \ 76 int _error; \ 77 \ 78 _error = svr4_emul_find(p, sgp, svr4_emul_path, path, \ 79 &path, i); \ 80 if (_error == EFAULT) \ 81 return (_error); \ 82 } while (0) 83 84#define CHECKALTEXIST(p, sgp, path) CHECKALT(p, sgp, path, 0) 85#define CHECKALTCREAT(p, sgp, path) CHECKALT(p, sgp, path, 1) 86 87#endif /* !_SVR4_UTIL_H_ */ 88