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_
35 #define ALT_STACK_SIZE 128
42 #define PCPU_MD_FIELDS \
43 unsigned int pc_vfpsid; \
44 unsigned int pc_vfpmvfr0; \
45 unsigned int pc_vfpmvfr1; \
46 struct pmap *pc_curpmap; \
47 vm_offset_t pc_qmap_addr; \
49 unsigned int pc_dbreg[32]; \
53 #define PCPU_MD_FIELDS \
54 vm_offset_t qmap_addr; \
61 #define PC_DBREG_CMD_NONE 0
62 #define PC_DBREG_CMD_LOAD 1
67 extern struct pcpu *pcpup;
70 #define CPU_MASK (0xf)
73 #define get_pcpu() (pcpup)
75 #define get_pcpu() __extension__ ({ \
77 __asm __volatile("mrc p15, 0, %0, c0, c0, 5" : "=r" (id)); \
78 (pcpup + (id & CPU_MASK)); \
82 static inline struct thread *
87 __asm __volatile("mrc p15, 0, %0, c13, c0, 4" : "=r" (ret));
92 set_curthread(struct thread *td)
95 __asm __volatile("mcr p15, 0, %0, c13, c0, 4" : : "r" (td));
104 /* TPIDRURW contains the authoritative value. */
105 __asm __volatile("mrc p15, 0, %0, c13, c0, 2" : "=r" (tls));
114 * Update both TPIDRURW and TPIDRURO. TPIDRURW needs to be written
115 * first to ensure that a context switch between the two writes will
116 * still give the desired result of updating both.
119 "mcr p15, 0, %0, c13, c0, 2\n"
120 "mcr p15, 0, %0, c13, c0, 3\n"
124 #define curthread get_curthread()
127 #define get_pcpu() pcpup
130 #define PCPU_GET(member) (get_pcpu()->pc_ ## member)
131 #define PCPU_ADD(member, value) (get_pcpu()->pc_ ## member += (value))
132 #define PCPU_INC(member) PCPU_ADD(member, 1)
133 #define PCPU_PTR(member) (&get_pcpu()->pc_ ## member)
134 #define PCPU_SET(member,value) (get_pcpu()->pc_ ## member = (value))
136 void pcpu0_init(void);
139 #endif /* !_MACHINE_PCPU_H_ */