1 /* $NetBSD: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Christos Zoulas 5 * Copyright (c) 1995 Frank van der Linden 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp 31 */ 32 33 /* 34 * This file is pretty much the same as Christos' svr4_util.h 35 * (for now). 36 */ 37 38 #ifndef _LINUX_UTIL_H_ 39 #define _LINUX_UTIL_H_ 40 41 #include <machine/vmparam.h> 42 #include <sys/exec.h> 43 #include <sys/cdefs.h> 44 45 #define cvtto_linux_mask(flags,bmask,lmask) (((flags) & bmask) ? lmask : 0) 46 #define cvtto_bsd_mask(flags,lmask,bmask) (((flags) & lmask) ? bmask : 0) 47 48 static __inline caddr_t 49 stackgap_init() 50 { 51 extern char sigcode[], esigcode[]; 52 #define szsigcode ((caddr_t)(esigcode - sigcode)) 53 return STACKGAPBASE; 54 } 55 56 57 static __inline void * 58 stackgap_alloc(sgp, sz) 59 caddr_t *sgp; 60 size_t sz; 61 { 62 void *p = (void *) *sgp; 63 *sgp += ALIGN(sz); 64 return p; 65 } 66 67 extern const char linux_emul_path[]; 68 69 int linux_emul_find __P((struct proc *, caddr_t *, const char *, char *, 70 char **, int)); 71 72 #define CHECK_ALT_EXIST(p, sgp, path) \ 73 linux_emul_find(p, sgp, linux_emul_path, path, &(path), 0) 74 75 #define CHECK_ALT_CREAT(p, sgp, path) \ 76 linux_emul_find(p, sgp, linux_emul_path, path, &(path), 1) 77 78 #endif /* !_LINUX_UTIL_H_ */ 79