1 /*- 2 * Copyright (c) 1997 Jonathan Lemon 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 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _I386_PCB_EXT_H_ 30 #define _I386_PCB_EXT_H_ 31 32 /* 33 * Extension to the 386 process control block 34 */ 35 #include <machine/tss.h> 36 #include <machine/vm86.h> 37 #include <machine/segments.h> 38 39 struct pcb_ext { 40 struct segment_descriptor ext_tssd; /* tss descriptor */ 41 struct i386tss ext_tss; /* per-process i386tss */ 42 caddr_t ext_iomap; /* i/o permission bitmap */ 43 struct vm86_kernel ext_vm86; /* vm86 area */ 44 }; 45 46 struct pcb_ldt { 47 caddr_t ldt_base; 48 int ldt_len; 49 int ldt_refcnt; 50 u_long ldt_active; 51 struct segment_descriptor ldt_sd; 52 }; 53 54 #ifdef _KERNEL 55 56 int i386_extend_pcb __P((struct proc *)); 57 void set_user_ldt __P((struct pcb *)); 58 struct pcb_ldt *user_ldt_alloc __P((struct pcb *, int)); 59 void user_ldt_free __P((struct pcb *)); 60 61 #endif 62 63 #endif /* _I386_PCB_EXT_H_ */ 64