2 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * from: FreeBSD: src/sys/i386/include/globaldata.h,v 1.27 2001/04/27
30 #ifndef _MACHINE_PCPU_H_
31 #define _MACHINE_PCPU_H_
33 #include <machine/cpu.h>
34 #include <machine/cpufunc.h>
36 #define ALT_STACK_SIZE 128
38 typedef int (*pcpu_bp_harden)(void);
39 typedef int (*pcpu_ssbd)(int);
40 struct debug_monitor_state;
42 #define PCPU_MD_FIELDS \
43 u_int pc_acpi_id; /* ACPI CPU id */ \
44 u_int pc_midr; /* stored MIDR value */ \
46 pcpu_bp_harden pc_bp_harden; \
48 struct pmap *pc_curpmap; \
49 struct pmap *pc_curvmpmap; \
50 u_int pc_bcast_tlbi_workaround; \
51 /* Store as two u_int values to preserve KBI */ \
52 u_int pc_mpidr_low; /* lower MPIDR 32 bits */ \
53 u_int pc_mpidr_high; /* upper MPIDR 32 bits */ \
61 register struct pcpu *pcpup __asm ("x18");
63 static inline struct pcpu *
68 __asm __volatile("mov %0, x18" : "=&r"(pcpu));
72 static inline struct thread *
77 __asm __volatile("ldr %0, [x18]" : "=&r"(td));
81 #define curthread get_curthread()
83 #define PCPU_GET(member) (pcpup->pc_ ## member)
84 #define PCPU_ADD(member, value) (pcpup->pc_ ## member += (value))
85 #define PCPU_PTR(member) (&pcpup->pc_ ## member)
86 #define PCPU_SET(member,value) (pcpup->pc_ ## member = (value))
88 #define PCPU_GET_MPIDR(pc) \
89 ((((uint64_t)((pc)->pc_mpidr_high)) << 32) | ((pc)->pc_mpidr_low))
93 #endif /* !_MACHINE_PCPU_H_ */