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 32 #ifdef __i386__ 33 #include <i386/proc.h> 34 #else /* !__i386__ */ 35 36 #ifndef _MACHINE_PROC_H_ 37 #define _MACHINE_PROC_H_ 38 39 #include <sys/queue.h> 40 #include <machine/pcb.h> 41 #include <machine/segments.h> 42 43 /* 44 * List of locks 45 * c - proc lock 46 * k - only accessed by curthread 47 * pp - pmap.c:invl_gen_mtx 48 */ 49 50 struct proc_ldt { 51 caddr_t ldt_base; 52 int ldt_refcnt; 53 }; 54 55 #define PMAP_INVL_GEN_NEXT_INVALID 0x1ULL 56 struct pmap_invl_gen { 57 u_long gen; /* (k) */ 58 union { 59 LIST_ENTRY(pmap_invl_gen) link; /* (pp) */ 60 struct { 61 struct pmap_invl_gen *next; 62 u_char saved_pri; 63 }; 64 }; 65 } __aligned(16); 66 67 /* 68 * Machine-dependent part of the proc structure for AMD64. 69 */ 70 struct mdthread { 71 int md_spinlock_count; /* (k) */ 72 register_t md_saved_flags; /* (k) */ 73 register_t md_spurflt_addr; /* (k) Spurious page fault address. */ 74 struct pmap_invl_gen md_invl_gen; 75 register_t md_efirt_tmp; /* (k) */ 76 int md_efirt_dis_pf; /* (k) */ 77 struct pcb md_pcb; 78 vm_offset_t md_stack_base; 79 void *md_usr_fpu_save; 80 }; 81 82 struct mdproc { 83 struct proc_ldt *md_ldt; /* (t) per-process ldt */ 84 struct system_segment_descriptor md_ldt_sd; 85 u_int md_flags; /* (c) md process flags P_MD */ 86 }; 87 88 #define P_MD_KPTI 0x00000001 /* Enable KPTI on exec */ 89 #define P_MD_LA48 0x00000002 /* Request LA48 after exec */ 90 #define P_MD_LA57 0x00000004 /* Request LA57 after exec */ 91 92 #define KINFO_PROC_SIZE 1088 93 #define KINFO_PROC32_SIZE 768 94 95 #ifdef _KERNEL 96 97 struct proc_ldt *user_ldt_alloc(struct proc *, int); 98 void user_ldt_free(struct thread *); 99 struct sysarch_args; 100 int sysarch_ldt(struct thread *td, struct sysarch_args *uap, int uap_space); 101 int amd64_set_ldt_data(struct thread *td, int start, int num, 102 struct user_segment_descriptor *descs); 103 104 extern struct mtx dt_lock; 105 extern int max_ldt_segment; 106 107 #define NARGREGS 6 108 109 #endif /* _KERNEL */ 110 111 #endif /* !_MACHINE_PROC_H_ */ 112 113 #endif /* __i386__ */ 114