1 /* $NetBSD: cpu.h,v 1.29 2011/02/08 20:20:16 rmind 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) 45 46 #if defined(_KERNEL_OPT) 47 #include "opt_lockdebug.h" 48 #endif 49 50 /* 51 * Get common m68k CPU definitions. 52 */ 53 #include <m68k/cpu.h> 54 #define M68K_MMU_MOTOROLA 55 56 /* 57 * Arguments to hardclock and gatherstats encapsulate the previous 58 * machine state in an opaque clockframe. One the luna68k, we use 59 * what the hardware pushes on an interrupt (frame format 0). 60 */ 61 struct clockframe { 62 u_short sr; /* sr at time of interrupt */ 63 u_long pc; /* pc at time of interrupt */ 64 u_short vo; /* vector offset (4-word frame) */ 65 }; 66 67 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 68 #define CLKF_PC(framep) ((framep)->pc) 69 #if 0 70 /* We would like to do it this way... */ 71 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 72 #else 73 /* but until we start using PSL_M, we have to do this instead */ 74 #define CLKF_INTR(framep) (0) /* XXX */ 75 #endif 76 77 78 /* 79 * Preempt the current process if in interrupt from user mode, 80 * or after the current trap/syscall if in system mode. 81 */ 82 #define cpu_need_resched(ci,flags) { ci->ci_want_resched = 1; aston(); } 83 84 /* 85 * Give a profiling tick to the current process when the user profiling 86 * buffer pages are invalid. On the hp300, request an ast to send us 87 * through trap, marking the proc as needing a profiling tick. 88 */ 89 #define cpu_need_proftick(l) { (l)->l_pflag |= LP_OWEUPC; aston(); } 90 91 /* 92 * Notify the current process (p) that it has a signal pending, 93 * process as soon as possible. 94 */ 95 #define cpu_signotify(l) aston() 96 97 #define aston() (astpending = 1) 98 99 extern int astpending; /* need to trap before returning to user mode */ 100 101 #endif /* _KERNEL */ 102 103 /* 104 * CTL_MACHDEP definitions. 105 */ 106 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 107 #define CPU_MAXID 2 /* number of valid machdep ids */ 108 109 /* 110 * Values for machtype 111 */ 112 #define LUNA_I 1 113 #define LUNA_II 2 114 115 #ifdef _KERNEL 116 extern int machtype; 117 extern char *intiobase, *intiolimit; /* XXX */ 118 extern u_int intiobase_phys, intiotop_phys; /* XXX */ 119 120 /* machdep.c functions */ 121 void dumpconf(void); 122 void dumpsys(void); 123 124 /* locore.s functions */ 125 struct fpframe; 126 int suline(void *, void *); 127 void loadustp(int); 128 void m68881_save(struct fpframe *); 129 void m68881_restore(struct fpframe *); 130 131 /* machdep.c functions */ 132 int badaddr(void *, int); 133 134 #endif 135 136 #endif /* _MACHINE_CPU_H */ 137