ibcs2_util.h revision 121016
1 2/* 3 * Copyright (c) 1994 Christos Zoulas 4 * Copyright (c) 1995 Frank van der Linden 5 * Copyright (c) 1995 Scott Bartram 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 * from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp 32 * 33 * $FreeBSD: head/sys/i386/ibcs2/ibcs2_util.h 121016 2003-10-12 04:25:26Z tjr $ 34 */ 35 36/* 37 * This file is pretty much the same as Christos' svr4_util.h 38 * (for now). 39 */ 40 41#ifndef _IBCS2_UTIL_H_ 42#define _IBCS2_UTIL_H_ 43 44/* 45 * XXX the inlines have obnoxious prerequisites, only some of which are 46 * included here. 47 */ 48#include <vm/vm.h> 49#include <vm/pmap.h> 50#include <machine/vmparam.h> 51#include <sys/exec.h> 52#include <sys/sysent.h> 53#include <sys/proc.h> 54 55static __inline caddr_t stackgap_init(void); 56static __inline void *stackgap_alloc(caddr_t *, size_t); 57 58static __inline caddr_t 59stackgap_init() 60{ 61#define szsigcode (*(curthread->td_proc->p_sysent->sv_szsigcode)) 62 return (caddr_t)(PS_STRINGS - szsigcode - SPARE_USRSPACE); 63} 64 65static __inline void * 66stackgap_alloc(sgp, sz) 67 caddr_t *sgp; 68 size_t sz; 69{ 70 void *p = (void *) *sgp; 71 sz = ALIGN(sz); 72 if (*sgp + sz > (caddr_t)(PS_STRINGS - szsigcode)) 73 return NULL; 74 *sgp += sz; 75 return p; 76} 77 78#ifdef DEBUG_IBCS2 79#define DPRINTF(a) printf a; 80#else 81#define DPRINTF(a) 82#endif 83 84extern const char ibcs2_emul_path[]; 85 86int ibcs2_emul_find(struct thread *, caddr_t *, const char *, char *, 87 char **, int); 88 89#define CHECKALTEXIST(p, sgp, path) \ 90 ibcs2_emul_find(td, sgp, ibcs2_emul_path, path, &(path), 0) 91 92#define CHECKALTCREAT(p, sgp, path) \ 93 ibcs2_emul_find(td, sgp, ibcs2_emul_path, path, &(path), 1) 94 95#ifdef SPX_HACK 96int spx_open(struct thread *td, void *uap); 97#endif 98 99#endif /* !_IBCS2_UTIL_H_ */ 100