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cpu.h revision 1.12 
      1 /*      $NetBSD: cpu.h,v 1.12 1995/06/05 17:17:57 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_wait(p)
     41 #define	cpu_swapout(p)
     42 
     43 
     44 extern volatile int cpunumber;
     45 extern struct cpu_dep cpu_calls[];
     46 
     47 struct	cpu_dep {
     48 	int	(*cpu_loinit)(); /* Locore init before everything else */
     49 	int	(*cpu_clock)();	 /* CPU dependent clock handling */
     50 	int	(*cpu_mchk)();   /* Machine check handling */
     51 	int	(*cpu_memerr)(); /* Memory subsystem errors */
     52 	int	(*cpu_conf)();	 /* Autoconfiguration */
     53 };
     54 
     55 struct clockframe {
     56         int     pc;
     57         int     ps;
     58 };
     59 
     60 #define	setsoftnet()	mtpr(12,PR_SIRR)
     61 #define setsoftclock()	mtpr(8,PR_SIRR)
     62 
     63 /*
     64  * Preempt the current process if in interrupt from user mode,
     65  * or after the current trap/syscall if in system mode.
     66  */
     67 
     68 #define need_resched(){ \
     69 	want_resched++; \
     70 	mtpr(AST_OK,PR_ASTLVL); \
     71 	}
     72 
     73 /*
     74  * Notify the current process (p) that it has a signal pending,
     75  * process as soon as possible.
     76  */
     77 
     78 #define signotify(p)     mtpr(AST_OK,PR_ASTLVL);
     79 
     80 extern	int     want_resched;   /* resched() was called */
     81 
     82 /*
     83  * Give a profiling tick to the current process when the user profiling
     84  * buffer pages are invalid.  On the hp300, request an ast to send us
     85  * through trap, marking the proc as needing a profiling tick.
     86  */
     87 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); }
     88 
     89