1 /* $NetBSD: cpu.h,v 1.27 2011/05/16 13:22:52 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) 45 46 #if defined(_KERNEL_OPT) 47 #include "opt_lockdebug.h" 48 #include "opt_m68k_arch.h" 49 #endif 50 51 /* 52 * Get common m68k CPU definitions. 53 */ 54 #include <m68k/cpu.h> 55 56 /* 57 * Arguments to hardclock and gatherstats encapsulate the previous 58 * machine state in an opaque clockframe. One the hp300, 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 } __attribute__((packed)); 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) \ 83 do { ci->ci_want_resched = 1; aston(); } while (/* CONSTCOND */0) 84 85 /* 86 * Give a profiling tick to the current process when the user profiling 87 * buffer pages are invalid. On the hp300, request an ast to send us 88 * through trap, marking the proc as needing a profiling tick. 89 */ 90 #define cpu_need_proftick(l) \ 91 do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */0) 92 93 /* 94 * Notify the current process (p) that it has a signal pending, 95 * process as soon as possible. 96 */ 97 #define cpu_signotify(l) aston() 98 99 extern int astpending; /* need to trap before returning to user mode */ 100 #define aston() (astpending++) 101 102 #endif /* _KERNEL */ 103 104 /* 105 * CTL_MACHDEP definitions. 106 */ 107 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 108 #define CPU_MAXID 2 /* number of valid machdep ids */ 109 110 #ifdef _KERNEL 111 112 #ifndef M68040 113 #define M68040 114 #endif /* ! M68040 */ 115 116 #ifndef M68K_MMU_MOTOROLA 117 #define M68K_MMU_MOTOROLA 118 #endif /* ! M68K_MMU_MOTOROLA */ 119 120 /* locore.s functions */ 121 int suline(void *, void *); 122 void loadustp(int); 123 124 void doboot(void) 125 __attribute__((__noreturn__)); 126 127 /* machdep.c functions */ 128 int badaddr(void *); 129 int badbaddr(void *); 130 131 void kgdb_panic(void); 132 133 /* what is this supposed to do? i.e. how is it different than startrtclock? */ 134 #define enablertclock() 135 136 #endif /* _KERNEL */ 137 138 #endif /* _MACHINE_CPU_H_ */ 139