proc.h

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    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__ */

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FreeBSD/Linux Kernel Cross Reference sys/amd64/include/proc.h

FreeBSD/Linux Kernel Cross Reference
sys/amd64/include/proc.h