1 /* $NetBSD: cpu.h,v 1.38 2023/01/15 05:08:33 tsutsui Exp $ */ 2 3 /* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 37 * 38 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 39 */ 40 41 #ifndef _MACHINE_CPU_H 42 #define _MACHINE_CPU_H 43 44 #if defined(_KERNEL_OPT) 45 #include "opt_lockdebug.h" 46 #endif 47 48 /* 49 * Get common m68k CPU definitions. 50 */ 51 #include <m68k/cpu.h> 52 53 #if defined(_KERNEL) 54 55 #define M68K_MMU_MOTOROLA 56 57 /* 58 * Arguments to hardclock and gatherstats encapsulate the previous 59 * machine state in an opaque clockframe. On the luna68k, we use 60 * what the hardware pushes on an interrupt (frame format 0). 61 */ 62 struct clockframe { 63 u_short sr; /* sr at time of interrupt */ 64 u_long pc; /* pc at time of interrupt */ 65 u_short vo; /* vector offset (4-word frame) */ 66 }; 67 68 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 69 #define CLKF_PC(framep) ((framep)->pc) 70 #if 0 71 /* We would like to do it this way... */ 72 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 73 #else 74 /* but until we start using PSL_M, we have to do this instead */ 75 #define CLKF_INTR(framep) (0) /* XXX */ 76 #endif 77 78 79 /* 80 * Preempt the current process if in interrupt from user mode, 81 * or after the current trap/syscall if in system mode. 82 */ 83 #define cpu_need_resched(ci,l,flags) do { \ 84 __USE(flags); \ 85 aston(); \ 86 } while (/*CONSTCOND*/0) 87 88 /* 89 * Give a profiling tick to the current process when the user profiling 90 * buffer pages are invalid. On the luna68k, request an ast to send us 91 * through trap, marking the proc as needing a profiling tick. 92 */ 93 #define cpu_need_proftick(l) { (l)->l_pflag |= LP_OWEUPC; aston(); } 94 95 /* 96 * Notify the current process (p) that it has a signal pending, 97 * process as soon as possible. 98 */ 99 #define cpu_signotify(l) aston() 100 101 #define aston() (astpending = 1) 102 103 extern int astpending; /* need to trap before returning to user mode */ 104 105 #endif /* _KERNEL */ 106 107 /* 108 * Values for machtype 109 */ 110 #define LUNA_I 1 111 #define LUNA_II 2 112 113 #ifdef _KERNEL 114 extern int machtype; 115 extern char *intiobase, *intiolimit; /* XXX */ 116 extern u_int intiobase_phys, intiotop_phys; /* XXX */ 117 118 /* machdep.c functions */ 119 void dumpsys(void); 120 121 /* locore.s functions */ 122 void loadustp(int); 123 124 /* machdep.c functions */ 125 int badaddr(void *, int); 126 127 #endif 128 129 #endif /* _MACHINE_CPU_H */ 130