2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 1991 Regents of the University of California.
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8 * modification, are permitted provided that the following conditions
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31 * from: @(#)proc.h 7.1 (Berkeley) 5/15/91
35 #ifndef _MACHINE_PROC_H_
36 #define _MACHINE_PROC_H_
38 #include <sys/queue.h>
39 #include <machine/segments.h>
43 * k - only accessed by curthread
44 * pp - pmap.c:invl_gen_mtx
52 struct pmap_invl_gen {
54 LIST_ENTRY(pmap_invl_gen) link; /* (pp) */
58 * Machine-dependent part of the proc structure for AMD64.
61 int md_spinlock_count; /* (k) */
62 register_t md_saved_flags; /* (k) */
63 register_t md_spurflt_addr; /* (k) Spurious page fault address. */
64 struct pmap_invl_gen md_invl_gen;
68 struct proc_ldt *md_ldt; /* (t) per-process ldt */
69 struct system_segment_descriptor md_ldt_sd;
72 #define KINFO_PROC_SIZE 1088
73 #define KINFO_PROC32_SIZE 768
84 /* Get the current kernel thread stack usage. */
85 #define GET_STACK_USAGE(total, used) do { \
86 struct thread *td = curthread; \
87 (total) = td->td_kstack_pages * PAGE_SIZE; \
88 (used) = (char *)td->td_kstack + \
89 td->td_kstack_pages * PAGE_SIZE - \
93 struct proc_ldt *user_ldt_alloc(struct proc *, int);
94 void user_ldt_free(struct thread *);
96 int sysarch_ldt(struct thread *td, struct sysarch_args *uap, int uap_space);
97 int amd64_set_ldt_data(struct thread *td, int start, int num,
98 struct user_segment_descriptor *descs);
100 extern struct mtx dt_lock;
101 extern int max_ldt_segment;
104 #endif /* !_MACHINE_PROC_H_ */