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cpu.h revision 1.6 
      1 /*      $NetBSD: cpu.h,v 1.6 1995/02/23 17:51:41 ragge Exp $      */
      2 
      3 /*
      4  * Copyright (c) 1994 Ludd, University of Lule}, Sweden
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed at Ludd, University of Lule}
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 
     33  /* All bugs are subject to removal without further notice */
     34 
     35 #include "sys/cdefs.h"
     36 #include "vax/include/mtpr.h"
     37 #include "vax/include/pcb.h"
     38 
     39 #define enablertclock()
     40 #define	cpu_swapin(p)
     41 /* #define	cpu_set_init_frame(p,f) {extern u_int scratch;mtpr(scratch,PR_SSP);} */
     42 #define cpu_set_init_frame(p,f)\
     43 	 {extern u_int scratch;p->p_addr->u_pcb.framep=scratch;}
     44 #define	cpu_wait(p)
     45 
     46 
     47 extern volatile int cpunumber;
     48 extern struct cpu_dep cpu_calls[];
     49 
     50 struct	cpu_dep {
     51 	int	(*cpu_loinit)(); /* Locore init before everything else */
     52 	int	(*cpu_clock)();	 /* CPU dependent clock handling */
     53 	int	(*cpu_mchk)();   /* Machine check handling */
     54 	int	(*cpu_memerr)(); /* Memory subsystem errors */
     55 	int	(*cpu_conf)();	 /* Autoconfiguration */
     56 };
     57 
     58 struct clockframe {
     59         int     pc;
     60         int     ps;
     61 };
     62 
     63 #if !defined(VAX630) && !defined(VAX410)
     64 #define todr()		mfpr(PR_TODR)
     65 #endif
     66 #define	setsoftnet()	mtpr(12,PR_SIRR)
     67 #define setsoftclock()	mtpr(8,PR_SIRR)
     68 
     69 /*
     70  * Preempt the current process if in interrupt from user mode,
     71  * or after the current trap/syscall if in system mode.
     72  */
     73 
     74 #define need_resched(){ \
     75 	want_resched++; \
     76 	mtpr(AST_OK,PR_ASTLVL); \
     77 	}
     78 
     79 /*
     80  * Notify the current process (p) that it has a signal pending,
     81  * process as soon as possible.
     82  */
     83 
     84 #define signotify(p)     mtpr(AST_OK,PR_ASTLVL);
     85 
     86 extern	int     want_resched;   /* resched() was called */
     87 
     88 /*
     89  * Give a profiling tick to the current process when the user profiling
     90  * buffer pages are invalid.  On the hp300, request an ast to send us
     91  * through trap, marking the proc as needing a profiling tick.
     92  */
     93 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); }
     94 
     95