ibcs2_util.h revision 141488
1/*- 2 * Copyright (c) 1994 Christos Zoulas 3 * Copyright (c) 1995 Frank van der Linden 4 * Copyright (c) 1995 Scott Bartram 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. The name of the author may not be used to endorse or promote products 16 * derived from this software without specific prior written permission 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 * 29 * from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp 30 * from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp 31 * 32 * $FreeBSD: head/sys/i386/ibcs2/ibcs2_util.h 141488 2005-02-07 22:02:18Z jhb $ 33 */ 34 35/* 36 * This file is pretty much the same as Christos' svr4_util.h 37 * (for now). 38 */ 39 40#ifndef _IBCS2_UTIL_H_ 41#define _IBCS2_UTIL_H_ 42 43/* 44 * XXX the inlines have obnoxious prerequisites, only some of which are 45 * included here. 46 */ 47#include <vm/vm.h> 48#include <vm/pmap.h> 49#include <machine/vmparam.h> 50#include <sys/exec.h> 51#include <sys/sysent.h> 52#include <sys/proc.h> 53#include <sys/uio.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 *, char *, enum uio_seg, char **, int); 87 88#define CHECKALT(td, upath, pathp, i) \ 89 do { \ 90 int _error; \ 91 \ 92 _error = ibcs2_emul_find(td, upath, UIO_USERSPACE, pathp, i); \ 93 if (*(pathp) == NULL) \ 94 return (_error); \ 95 } while (0) 96 97#define CHECKALTEXIST(td, upath, pathp) CHECKALT(td, upath, pathp, 0) 98#define CHECKALTCREAT(td, upath, pathp) CHECKALT(td, upath, pathp, 1) 99 100#ifdef SPX_HACK 101int spx_open(struct thread *td); 102#endif 103 104#endif /* !_IBCS2_UTIL_H_ */ 105