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 #define PMAP_INVL_GEN_NEXT_INVALID 0x1ULL 54 struct pmap_invl_gen { 55 u_long gen; /* (k) */ 56 union { 57 LIST_ENTRY(pmap_invl_gen) link; /* (pp) */ 58 struct { 59 struct pmap_invl_gen *next; 60 u_char saved_pri; 61 }; 62 }; 63 } __aligned(16); 64 65 /* 66 * Machine-dependent part of the proc structure for AMD64. 67 */ 68 struct mdthread { 69 int md_spinlock_count; /* (k) */ 70 register_t md_saved_flags; /* (k) */ 71 register_t md_spurflt_addr; /* (k) Spurious page fault address. */ 72 struct pmap_invl_gen md_invl_gen; 73 register_t md_efirt_tmp; /* (k) */ 74 int md_efirt_dis_pf; /* (k) */ 75 }; 76 77 struct mdproc { 78 struct proc_ldt *md_ldt; /* (t) per-process ldt */ 79 struct system_segment_descriptor md_ldt_sd; 80 u_int md_flags; /* (c) md process flags P_MD */ 81 }; 82 83 #define P_MD_KPTI 0x00000001 /* Enable KPTI on exec */ 84 85 #define KINFO_PROC_SIZE 1088 86 #define KINFO_PROC32_SIZE 768 87 88 struct syscall_args { 89 u_int code; 90 struct sysent *callp; 91 register_t args[8]; 92 int narg; 93 }; 94 95 #ifdef _KERNEL 96 97 /* Get the current kernel thread stack usage. */ 98 #define GET_STACK_USAGE(total, used) do { \ 99 struct thread *td = curthread; \ 100 (total) = td->td_kstack_pages * PAGE_SIZE; \ 101 (used) = (char *)td->td_kstack + \ 102 td->td_kstack_pages * PAGE_SIZE - \ 103 (char *)&td; \ 104 } while (0) 105 106 struct proc_ldt *user_ldt_alloc(struct proc *, int); 107 void user_ldt_free(struct thread *); 108 struct sysarch_args; 109 int sysarch_ldt(struct thread *td, struct sysarch_args *uap, int uap_space); 110 int amd64_set_ldt_data(struct thread *td, int start, int num, 111 struct user_segment_descriptor *descs); 112 113 extern struct mtx dt_lock; 114 extern int max_ldt_segment; 115 116 #define NARGREGS 6 117 118 #endif /* _KERNEL */ 119 120 #endif /* !_MACHINE_PROC_H_ */ 121