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cpu.h revision 1.11 
      1 /*      $NetBSD: cpu.h,v 1.11 1995/05/05 14:13:01 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 "machine/mtpr.h"
     37 #include "machine/pcb.h"
     38 
     39 #define enablertclock()
     40 #define	cpu_swapin(p)
     41 #define	cpu_wait(p)
     42 #define	cpu_swapout(p)
     43 
     44 
     45 extern volatile int cpunumber;
     46 extern struct cpu_dep cpu_calls[];
     47 
     48 struct	cpu_dep {
     49 	int	(*cpu_loinit)(); /* Locore init before everything else */
     50 	int	(*cpu_clock)();	 /* CPU dependent clock handling */
     51 	int	(*cpu_mchk)();   /* Machine check handling */
     52 	int	(*cpu_memerr)(); /* Memory subsystem errors */
     53 	int	(*cpu_conf)();	 /* Autoconfiguration */
     54 };
     55 
     56 struct clockframe {
     57         int     pc;
     58         int     ps;
     59 };
     60 
     61 #define	setsoftnet()	mtpr(12,PR_SIRR)
     62 #define setsoftclock()	mtpr(8,PR_SIRR)
     63 
     64 /*
     65  * Preempt the current process if in interrupt from user mode,
     66  * or after the current trap/syscall if in system mode.
     67  */
     68 
     69 #define need_resched(){ \
     70 	want_resched++; \
     71 	mtpr(AST_OK,PR_ASTLVL); \
     72 	}
     73 
     74 /*
     75  * Notify the current process (p) that it has a signal pending,
     76  * process as soon as possible.
     77  */
     78 
     79 #define signotify(p)     mtpr(AST_OK,PR_ASTLVL);
     80 
     81 extern	int     want_resched;   /* resched() was called */
     82 
     83 /*
     84  * Give a profiling tick to the current process when the user profiling
     85  * buffer pages are invalid.  On the hp300, request an ast to send us
     86  * through trap, marking the proc as needing a profiling tick.
     87  */
     88 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); }
     89 
     90