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 register_t md_spurflt_addr; /* (k) Spurious page fault address. */ 55 }; 56 57 struct mdproc { 58 struct proc_ldt *md_ldt; /* (t) per-process ldt */ 59 }; 60 61 #define KINFO_PROC_SIZE 768 62 63 #ifdef _KERNEL 64 65 /* Get the current kernel thread stack usage. */ 66 #define GET_STACK_USAGE(total, used) do { \ 67 struct thread *td = curthread; \ 68 (total) = td->td_kstack_pages * PAGE_SIZE; \ 69 (used) = (char *)td->td_kstack + \ 70 td->td_kstack_pages * PAGE_SIZE - \ 71 (char *)&td; \ 72 } while (0) 73 74 void set_user_ldt(struct mdproc *); 75 struct proc_ldt *user_ldt_alloc(struct mdproc *, int); 76 void user_ldt_free(struct thread *); 77 void user_ldt_deref(struct proc_ldt *pldt); 78 79 extern struct mtx dt_lock; 80 81 struct syscall_args { 82 u_int code; 83 struct sysent *callp; 84 register_t args[8]; 85 int narg; 86 }; 87 #endif /* _KERNEL */ 88 89 #endif /* !_MACHINE_PROC_H_ */ 90