2 * Copyright (c) 1991 Regents of the University of California.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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9 * notice, this list of conditions and the following disclaimer.
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14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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29 * from: @(#)proc.h 7.1 (Berkeley) 5/15/91
33 #ifndef _MACHINE_PROC_H_
34 #define _MACHINE_PROC_H_
36 #include <sys/queue.h>
37 #include <machine/segments.h>
41 * k - only accessed by curthread
42 * pp - pmap.c:invl_gen_mtx
50 struct pmap_invl_gen {
52 LIST_ENTRY(pmap_invl_gen) link; /* (pp) */
56 * Machine-dependent part of the proc structure for AMD64.
59 int md_spinlock_count; /* (k) */
60 register_t md_saved_flags; /* (k) */
61 register_t md_spurflt_addr; /* (k) Spurious page fault address. */
62 struct pmap_invl_gen md_invl_gen;
66 struct proc_ldt *md_ldt; /* (t) per-process ldt */
67 struct system_segment_descriptor md_ldt_sd;
70 #define KINFO_PROC_SIZE 1088
71 #define KINFO_PROC32_SIZE 768
75 /* Get the current kernel thread stack usage. */
76 #define GET_STACK_USAGE(total, used) do { \
77 struct thread *td = curthread; \
78 (total) = td->td_kstack_pages * PAGE_SIZE; \
79 (used) = (char *)td->td_kstack + \
80 td->td_kstack_pages * PAGE_SIZE - \
84 void set_user_ldt(struct mdproc *);
85 struct proc_ldt *user_ldt_alloc(struct proc *, int);
86 void user_ldt_free(struct thread *);
87 void user_ldt_deref(struct proc_ldt *);
89 int sysarch_ldt(struct thread *td, struct sysarch_args *uap, int uap_space);
90 int amd64_set_ldt_data(struct thread *td, int start, int num,
91 struct user_segment_descriptor *descs);
93 extern struct mtx dt_lock;
94 extern int max_ldt_segment;
104 #endif /* !_MACHINE_PROC_H_ */