1 /*- 2 * Copyright (c) 1999 Luoqi Chen <luoqi@freebsd.org> 3 * Copyright (c) Peter Wemm <peter@netplex.com.au> 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 */ 29 30 #ifndef _MACHINE_PCPU_H_ 31 #define _MACHINE_PCPU_H_ 32 33 #ifdef _KERNEL 34 #include <machine/cpufunc.h> 35 36 struct pmap; 37 #define CPUSAVE_LEN 8 38 39 #define PCPU_MD_FIELDS \ 40 int pc_inside_intr; \ 41 struct pmap *pc_curpmap; /* current pmap */ \ 42 struct thread *pc_fputhread; /* current fpu user */ \ 43 register_t pc_tempsave[CPUSAVE_LEN]; \ 44 register_t pc_disisave[CPUSAVE_LEN]; \ 45 register_t pc_dbsave[CPUSAVE_LEN]; 46 47 /* Definitions for register offsets within the exception tmp save areas */ 48 #define CPUSAVE_R28 0 /* where r28 gets saved */ 49 #define CPUSAVE_R29 1 /* where r29 gets saved */ 50 #define CPUSAVE_R30 2 /* where r30 gets saved */ 51 #define CPUSAVE_R31 3 /* where r31 gets saved */ 52 #define CPUSAVE_DAR 4 /* where SPR_DAR gets saved */ 53 #define CPUSAVE_DSISR 5 /* where SPR_DSISR gets saved */ 54 #define CPUSAVE_SRR0 6 /* where SRR0 gets saved */ 55 #define CPUSAVE_SRR1 7 /* where SRR1 gets saved */ 56 57 #define PCPUP ((struct pcpu *) powerpc_get_pcpup()) 58 59 #define PCPU_GET(member) (PCPUP->pc_ ## member) 60 61 /* 62 * XXX The implementation of this operation should be made atomic 63 * with respect to preemption. 64 */ 65 #define PCPU_ADD(member, value) (PCPUP->pc_ ## member += (value)) 66 #define PCPU_INC(member) PCPU_ADD(member, 1) 67 #define PCPU_PTR(member) (&PCPUP->pc_ ## member) 68 #define PCPU_SET(member,value) (PCPUP->pc_ ## member = (value)) 69 70 #endif /* _KERNEL */ 71 72 #endif /* !_MACHINE_PCPU_H_ */ 73