svr4_util.h revision 150663
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 150663 2005-09-28 07:03:03Z rwatson $ 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#include <sys/uio.h> 43 44#ifdef DEBUG_SVR4 45#define DPRINTF(a) uprintf a; 46#else 47#define DPRINTF(a) 48#endif 49 50 51static __inline caddr_t stackgap_init(void); 52static __inline void *stackgap_alloc(caddr_t *, size_t); 53 54static __inline caddr_t 55stackgap_init() 56{ 57#define szsigcode (*(curthread->td_proc->p_sysent->sv_szsigcode)) 58 return (caddr_t)(((caddr_t)PS_STRINGS) - szsigcode - SPARE_USRSPACE); 59} 60 61static __inline void * 62stackgap_alloc(sgp, sz) 63 caddr_t *sgp; 64 size_t sz; 65{ 66 void *p = (void *) *sgp; 67 sz = ALIGN(sz); 68 if (*sgp + sz > (caddr_t)(PS_STRINGS - szsigcode)) 69 return NULL; 70 *sgp += sz; 71 return p; 72} 73 74int svr4_emul_find(struct thread *, char *, enum uio_seg, char **, int); 75 76#define CHECKALT(td, upath, pathp, i) \ 77 do { \ 78 int _error; \ 79 \ 80 _error = svr4_emul_find(td, upath, UIO_USERSPACE, pathp, i); \ 81 if (*(pathp) == NULL) \ 82 return (_error); \ 83 } while (0) 84 85#define CHECKALTEXIST(td, upath, pathp) CHECKALT(td, upath, pathp, 0) 86#define CHECKALTCREAT(td, upath, pathp) CHECKALT(td, upath, pathp, 1) 87 88#endif /* !_SVR4_UTIL_H_ */ 89