1 /* $NetBSD: cpu.h,v 1.24 2010/06/06 04:50:06 mrg Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Systems Programming Group of the University of Utah Computer 9 * Science Department. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 36 * 37 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 38 */ 39 /* 40 * Copyright (c) 1988 University of Utah. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * the Systems Programming Group of the University of Utah Computer 44 * Science Department. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 75 * 76 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 77 */ 78 79 #ifndef _MACHINE_CPU_H_ 80 #define _MACHINE_CPU_H_ 81 82 #if defined(_KERNEL) 83 84 #if defined(_KERNEL_OPT) 85 #include "opt_lockdebug.h" 86 #include "opt_m68k_arch.h" 87 #endif 88 89 /* 90 * Get common m68k CPU definitions. 91 */ 92 #include <m68k/cpu.h> 93 94 #include <sys/cpu_data.h> 95 struct cpu_info { 96 struct cpu_data ci_data; /* MI per-cpu data */ 97 cpuid_t ci_cpuid; 98 int ci_mtx_count; 99 int ci_mtx_oldspl; 100 int ci_want_resched; 101 }; 102 103 extern struct cpu_info cpu_info_store; 104 105 #define curcpu() (&cpu_info_store) 106 107 /* 108 * definitions of cpu-dependent requirements 109 * referenced in generic code 110 */ 111 #define cpu_number() 0 112 113 void cpu_proc_fork(struct proc *, struct proc *); 114 115 /* 116 * Arguments to hardclock and gatherstats encapsulate the previous 117 * machine state in an opaque clockframe. One the hp300, we use 118 * what the hardware pushes on an interrupt (frame format 0). 119 */ 120 struct clockframe { 121 u_short sr; /* sr at time of interrupt */ 122 u_long pc; /* pc at time of interrupt */ 123 u_short vo; /* vector offset (4-word frame) */ 124 } __attribute__((packed)); 125 126 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 127 #define CLKF_PC(framep) ((framep)->pc) 128 #if 0 129 /* We would like to do it this way... */ 130 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 131 #else 132 /* but until we start using PSL_M, we have to do this instead */ 133 #define CLKF_INTR(framep) (0) /* XXX */ 134 #endif 135 136 137 /* 138 * Preempt the current process if in interrupt from user mode, 139 * or after the current trap/syscall if in system mode. 140 */ 141 #define cpu_need_resched(ci, flags) \ 142 do { ci->ci_want_resched = 1; aston(); } while (/* CONSTCOND */0) 143 144 /* 145 * Give a profiling tick to the current process when the user profiling 146 * buffer pages are invalid. On the hp300, request an ast to send us 147 * through trap, marking the proc as needing a profiling tick. 148 */ 149 #define cpu_need_proftick(l) \ 150 do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */0) 151 152 /* 153 * Notify the current process (p) that it has a signal pending, 154 * process as soon as possible. 155 */ 156 #define cpu_signotify(l) aston() 157 158 extern int astpending; /* need to trap before returning to user mode */ 159 #define aston() (astpending++) 160 161 #endif /* _KERNEL */ 162 163 /* 164 * CTL_MACHDEP definitions. 165 */ 166 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 167 #define CPU_MAXID 2 /* number of valid machdep ids */ 168 169 #ifdef _KERNEL 170 171 #ifndef M68040 172 #define M68040 173 #endif /* ! M68040 */ 174 175 #ifndef M68K_MMU_MOTOROLA 176 #define M68K_MMU_MOTOROLA 177 #endif /* ! M68K_MMU_MOTOROLA */ 178 179 struct fpframe; 180 181 /* locore.s functions */ 182 void m68881_save(struct fpframe *); 183 void m68881_restore(struct fpframe *); 184 int suline(void *, void *); 185 void loadustp(int); 186 187 void doboot(void) 188 __attribute__((__noreturn__)); 189 190 /* machdep.c functions */ 191 int badaddr(void *); 192 int badbaddr(void *); 193 194 void kgdb_panic(void); 195 196 /* what is this supposed to do? i.e. how is it different than startrtclock? */ 197 #define enablertclock() 198 199 #endif /* _KERNEL */ 200 201 #endif /* _MACHINE_CPU_H_ */ 202