/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 1991 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifdef __i386__
#include <i386/proc.h>
#else /* !__i386__ */

#ifndef _MACHINE_PROC_H_
#define _MACHINE_PROC_H_

#include <sys/queue.h>
#include <machine/pcb.h>
#include <machine/segments.h>

/*
 * List of locks
 *      c  - proc lock
 *      k  - only accessed by curthread
 *      pp - pmap.c:invl_gen_mtx
 */

struct proc_ldt {
        caddr_t ldt_base;
        int     ldt_refcnt;
};

#define PMAP_INVL_GEN_NEXT_INVALID      0x1ULL
struct pmap_invl_gen {
        u_long gen;                     /* (k) */
        union {
                LIST_ENTRY(pmap_invl_gen) link; /* (pp) */
                struct {
                        struct pmap_invl_gen *next;
                        u_char saved_pri;
                };
        };
} __aligned(16);

/*
 * Machine-dependent part of the proc structure for AMD64.
 */
struct mdthread {
        int     md_spinlock_count;      /* (k) */
        register_t md_saved_flags;      /* (k) */
        register_t md_spurflt_addr;     /* (k) Spurious page fault address. */
        struct pmap_invl_gen md_invl_gen;
        register_t md_efirt_tmp;        /* (k) */
        int     md_efirt_dis_pf;        /* (k) */
        struct pcb md_pcb;
        vm_offset_t md_stack_base;
        void *md_usr_fpu_save;
};

struct mdproc {
        struct proc_ldt *md_ldt;        /* (t) per-process ldt */
        struct system_segment_descriptor md_ldt_sd;
        u_int md_flags;                 /* (c) md process flags P_MD */
};

#define P_MD_KPTI               0x00000001      /* Enable KPTI on exec */
#define P_MD_LA48               0x00000002      /* Request LA48 after exec */
#define P_MD_LA57               0x00000004      /* Request LA57 after exec */

#define KINFO_PROC_SIZE 1088
#define KINFO_PROC32_SIZE 768

#ifdef  _KERNEL

struct proc_ldt *user_ldt_alloc(struct proc *, int);
void user_ldt_free(struct thread *);
struct sysarch_args;
int sysarch_ldt(struct thread *td, struct sysarch_args *uap, int uap_space);
int amd64_set_ldt_data(struct thread *td, int start, int num,
    struct user_segment_descriptor *descs);

extern struct mtx dt_lock;
extern int max_ldt_segment;

#define NARGREGS        6

#endif  /* _KERNEL */

#endif /* !_MACHINE_PROC_H_ */

#endif /* __i386__ */