1 /*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 1991 Regents of the University of California. 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * from: @(#)proc.h 7.1 (Berkeley) 5/15/91 32 * $FreeBSD$ 33 */ 34 35 #ifndef _MACHINE_PROC_H_ 36 #define _MACHINE_PROC_H_ 37 38 #include <sys/queue.h> 39 #include <machine/segments.h> 40 41 /* 42 * List of locks 43 * c - proc lock 44 * k - only accessed by curthread 45 * pp - pmap.c:invl_gen_mtx 46 */ 47 48 struct proc_ldt { 49 caddr_t ldt_base; 50 int ldt_refcnt; 51 }; 52 53 struct pmap_invl_gen { 54 u_long gen; /* (k) */ 55 LIST_ENTRY(pmap_invl_gen) link; /* (pp) */ 56 }; 57 58 /* 59 * Machine-dependent part of the proc structure for AMD64. 60 */ 61 struct mdthread { 62 int md_spinlock_count; /* (k) */ 63 register_t md_saved_flags; /* (k) */ 64 register_t md_spurflt_addr; /* (k) Spurious page fault address. */ 65 struct pmap_invl_gen md_invl_gen; 66 register_t md_efirt_tmp; /* (k) */ 67 int md_efirt_dis_pf; /* (k) */ 68 }; 69 70 struct mdproc { 71 struct proc_ldt *md_ldt; /* (t) per-process ldt */ 72 struct system_segment_descriptor md_ldt_sd; 73 u_int md_flags; /* (c) md process flags P_MD */ 74 }; 75 76 #define P_MD_KPTI 0x00000001 /* Enable KPTI on exec */ 77 78 #define KINFO_PROC_SIZE 1088 79 #define KINFO_PROC32_SIZE 768 80 81 struct syscall_args { 82 u_int code; 83 struct sysent *callp; 84 register_t args[8]; 85 int narg; 86 }; 87 88 #ifdef _KERNEL 89 90 /* Get the current kernel thread stack usage. */ 91 #define GET_STACK_USAGE(total, used) do { \ 92 struct thread *td = curthread; \ 93 (total) = td->td_kstack_pages * PAGE_SIZE; \ 94 (used) = (char *)td->td_kstack + \ 95 td->td_kstack_pages * PAGE_SIZE - \ 96 (char *)&td; \ 97 } while (0) 98 99 struct proc_ldt *user_ldt_alloc(struct proc *, int); 100 void user_ldt_free(struct thread *); 101 struct sysarch_args; 102 int sysarch_ldt(struct thread *td, struct sysarch_args *uap, int uap_space); 103 int amd64_set_ldt_data(struct thread *td, int start, int num, 104 struct user_segment_descriptor *descs); 105 106 extern struct mtx dt_lock; 107 extern int max_ldt_segment; 108 109 #define NARGREGS 6 110 111 #endif /* _KERNEL */ 112 113 #endif /* !_MACHINE_PROC_H_ */ 114