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
50struct proc_ldt {
51	caddr_t ldt_base;
52	int     ldt_refcnt;
53};
54
55#define PMAP_INVL_GEN_NEXT_INVALID	0x1ULL
56struct 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 */
70struct 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
82struct 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
97struct proc_ldt *user_ldt_alloc(struct proc *, int);
98void user_ldt_free(struct thread *);
99struct sysarch_args;
100int sysarch_ldt(struct thread *td, struct sysarch_args *uap, int uap_space);
101int amd64_set_ldt_data(struct thread *td, int start, int num,
102    struct user_segment_descriptor *descs);
103
104extern struct mtx dt_lock;
105extern int max_ldt_segment;
106
107#define	NARGREGS	6
108
109#endif  /* _KERNEL */
110
111#endif /* !_MACHINE_PROC_H_ */
112
113#endif /* __i386__ */
114