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/pcb.h> 40 #include <machine/segments.h> 41 42 /* 43 * List of locks 44 * c - proc lock 45 * k - only accessed by curthread 46 * pp - pmap.c:invl_gen_mtx 47 */ 48 49 struct proc_ldt { 50 caddr_t ldt_base; 51 int ldt_refcnt; 52 }; 53 54 #define PMAP_INVL_GEN_NEXT_INVALID 0x1ULL 55 struct pmap_invl_gen { 56 u_long gen; /* (k) */ 57 union { 58 LIST_ENTRY(pmap_invl_gen) link; /* (pp) */ 59 struct { 60 struct pmap_invl_gen *next; 61 u_char saved_pri; 62 }; 63 }; 64 } __aligned(16); 65 66 /* 67 * Machine-dependent part of the proc structure for AMD64. 68 */ 69 struct mdthread { 70 int md_spinlock_count; /* (k) */ 71 register_t md_saved_flags; /* (k) */ 72 register_t md_spurflt_addr; /* (k) Spurious page fault address. */ 73 struct pmap_invl_gen md_invl_gen; 74 register_t md_efirt_tmp; /* (k) */ 75 int md_efirt_dis_pf; /* (k) */ 76 struct pcb md_pcb; 77 vm_offset_t md_stack_base; 78 void *md_usr_fpu_save; 79 }; 80 81 struct mdproc { 82 struct proc_ldt *md_ldt; /* (t) per-process ldt */ 83 struct system_segment_descriptor md_ldt_sd; 84 u_int md_flags; /* (c) md process flags P_MD */ 85 }; 86 87 #define P_MD_KPTI 0x00000001 /* Enable KPTI on exec */ 88 #define P_MD_LA48 0x00000002 /* Request LA48 after exec */ 89 #define P_MD_LA57 0x00000004 /* Request LA57 after exec */ 90 91 #define KINFO_PROC_SIZE 1088 92 #define KINFO_PROC32_SIZE 768 93 94 struct syscall_args { 95 u_int code; 96 u_int original_code; 97 struct sysent *callp; 98 register_t args[8]; 99 }; 100 101 #ifdef _KERNEL 102 103 /* Get the current kernel thread stack usage. */ 104 #define GET_STACK_USAGE(total, used) do { \ 105 struct thread *td = curthread; \ 106 (total) = td->td_kstack_pages * PAGE_SIZE; \ 107 (used) = (char *)td->td_kstack + \ 108 td->td_kstack_pages * PAGE_SIZE - \ 109 (char *)&td; \ 110 } while (0) 111 112 struct proc_ldt *user_ldt_alloc(struct proc *, int); 113 void user_ldt_free(struct thread *); 114 struct sysarch_args; 115 int sysarch_ldt(struct thread *td, struct sysarch_args *uap, int uap_space); 116 int amd64_set_ldt_data(struct thread *td, int start, int num, 117 struct user_segment_descriptor *descs); 118 119 extern struct mtx dt_lock; 120 extern int max_ldt_segment; 121 122 #define NARGREGS 6 123 124 #endif /* _KERNEL */ 125 126 #endif /* !_MACHINE_PROC_H_ */ 127