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 #ifdef __i386__ 36 #include <i386/proc.h> 37 #else /* !__i386__ */ 38 39 #ifndef _MACHINE_PROC_H_ 40 #define _MACHINE_PROC_H_ 41 42 #include <sys/queue.h> 43 #include <machine/pcb.h> 44 #include <machine/segments.h> 45 46 /* 47 * List of locks 48 * c - proc lock 49 * k - only accessed by curthread 50 * pp - pmap.c:invl_gen_mtx 51 */ 52 53 struct proc_ldt { 54 caddr_t ldt_base; 55 int ldt_refcnt; 56 }; 57 58 #define PMAP_INVL_GEN_NEXT_INVALID 0x1ULL 59 struct pmap_invl_gen { 60 u_long gen; /* (k) */ 61 union { 62 LIST_ENTRY(pmap_invl_gen) link; /* (pp) */ 63 struct { 64 struct pmap_invl_gen *next; 65 u_char saved_pri; 66 }; 67 }; 68 } __aligned(16); 69 70 /* 71 * Machine-dependent part of the proc structure for AMD64. 72 */ 73 struct mdthread { 74 int md_spinlock_count; /* (k) */ 75 register_t md_saved_flags; /* (k) */ 76 register_t md_spurflt_addr; /* (k) Spurious page fault address. */ 77 struct pmap_invl_gen md_invl_gen; 78 register_t md_efirt_tmp; /* (k) */ 79 int md_efirt_dis_pf; /* (k) */ 80 struct pcb md_pcb; 81 vm_offset_t md_stack_base; 82 void *md_usr_fpu_save; 83 }; 84 85 struct mdproc { 86 struct proc_ldt *md_ldt; /* (t) per-process ldt */ 87 struct system_segment_descriptor md_ldt_sd; 88 u_int md_flags; /* (c) md process flags P_MD */ 89 }; 90 91 #define P_MD_KPTI 0x00000001 /* Enable KPTI on exec */ 92 #define P_MD_LA48 0x00000002 /* Request LA48 after exec */ 93 #define P_MD_LA57 0x00000004 /* Request LA57 after exec */ 94 95 #define KINFO_PROC_SIZE 1088 96 #define KINFO_PROC32_SIZE 768 97 98 #ifdef _KERNEL 99 100 /* Get the current kernel thread stack usage. */ 101 #define GET_STACK_USAGE(total, used) do { \ 102 struct thread *td = curthread; \ 103 (total) = td->td_kstack_pages * PAGE_SIZE; \ 104 (used) = (char *)td->td_kstack + \ 105 td->td_kstack_pages * PAGE_SIZE - \ 106 (char *)&td; \ 107 } while (0) 108 109 struct proc_ldt *user_ldt_alloc(struct proc *, int); 110 void user_ldt_free(struct thread *); 111 struct sysarch_args; 112 int sysarch_ldt(struct thread *td, struct sysarch_args *uap, int uap_space); 113 int amd64_set_ldt_data(struct thread *td, int start, int num, 114 struct user_segment_descriptor *descs); 115 116 extern struct mtx dt_lock; 117 extern int max_ldt_segment; 118 119 #define NARGREGS 6 120 121 #endif /* _KERNEL */ 122 123 #endif /* !_MACHINE_PROC_H_ */ 124 125 #endif /* __i386__ */ 126