1 /*- 2 * Copyright (c) 1991 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 4. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * from: @(#)proc.h 7.1 (Berkeley) 5/15/91 30 * $FreeBSD$ 31 */ 32 33 #ifndef _MACHINE_PROC_H_ 34 #define _MACHINE_PROC_H_ 35 36 #include <machine/segments.h> 37 38 struct proc_ldt { 39 caddr_t ldt_base; 40 int ldt_len; 41 int ldt_refcnt; 42 u_long ldt_active; 43 struct segment_descriptor ldt_sd; 44 }; 45 46 /* 47 * Machine-dependent part of the proc structure for i386. 48 * Table of MD locks: 49 * t - Descriptor tables lock 50 */ 51 struct mdthread { 52 int md_spinlock_count; /* (k) */ 53 register_t md_saved_flags; /* (k) */ 54 }; 55 56 struct mdproc { 57 struct proc_ldt *md_ldt; /* (t) per-process ldt */ 58 }; 59 60 #ifdef _KERNEL 61 62 void set_user_ldt(struct mdproc *); 63 struct proc_ldt *user_ldt_alloc(struct mdproc *, int); 64 void user_ldt_free(struct thread *); 65 66 extern struct mtx dt_lock; 67 68 #endif /* _KERNEL */ 69 70 #endif /* !_MACHINE_PROC_H_ */ 71