1 /*- 2 * Copyright (c) 1992 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Ralph Campbell and Rick Macklem. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. 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: @(#)cpu.h 7.7 (Berkeley) 11/15/92 37 * $Id: cpu.h,v 1.2 1993/10/15 02:57:11 deraadt Exp $ 38 */ 39 40 #ifndef _CPU_H_ 41 #define _CPU_H_ 42 43 #include <machine/machConst.h> 44 45 /* 46 * Exported definitions unique to pmax/mips cpu support. 47 */ 48 49 /* 50 * definitions of cpu-dependent requirements 51 * referenced in generic code 52 */ 53 #define COPY_SIGCODE /* copy sigcode above user stack in exec */ 54 55 #define cpu_exec(p) (p->p_md.md_ss_addr = 0) /* init single step */ 56 #define cpu_wait(p) /* nothing */ 57 #define cpu_setstack(p, ap) \ 58 (p)->p_md.md_regs[SP] = ap 59 60 /* 61 * Arguments to hardclock and gatherstats encapsulate the previous 62 * machine state in an opaque clockframe. 63 */ 64 typedef struct intrframe { 65 int pc; /* program counter at time of interrupt */ 66 int sr; /* status register at time of interrupt */ 67 } clockframe; 68 69 #define CLKF_USERMODE(framep) ((framep)->sr & MACH_SR_KU_PREV) 70 #define CLKF_BASEPRI(framep) \ 71 ((~(framep)->sr & (MACH_INT_MASK | MACH_SR_INT_ENA_PREV)) == 0) 72 #define CLKF_PC(framep) ((framep)->pc) 73 #define CLKF_INTR(framep) (0) 74 75 /* 76 * Preempt the current process if in interrupt from user mode, 77 * or after the current trap/syscall if in system mode. 78 */ 79 #define need_resched() { want_resched = 1; aston(); } 80 81 /* 82 * Give a profiling tick to the current process when the user profiling 83 * buffer pages are invalid. On the PMAX, request an ast to send us 84 * through trap, marking the proc as needing a profiling tick. 85 */ 86 #define need_proftick(p) { (p)->p_flag |= SOWEUPC; aston(); } 87 88 /* 89 * Notify the current process (p) that it has a signal pending, 90 * process as soon as possible. 91 */ 92 #define signotify(p) aston() 93 94 #define aston() (astpending = 1) 95 96 int astpending; /* need to trap before returning to user mode */ 97 int want_resched; /* resched() was called */ 98 99 /* 100 * CPU identification, from PRID register. 101 */ 102 union cpuprid { 103 int cpuprid; 104 struct { 105 #if BYTE_ORDER == BIG_ENDIAN 106 u_int pad1:16; /* reserved */ 107 u_int cp_imp:8; /* implementation identifier */ 108 u_int cp_majrev:4; /* major revision identifier */ 109 u_int cp_minrev:4; /* minor revision identifier */ 110 #else 111 u_int cp_minrev:4; /* minor revision identifier */ 112 u_int cp_majrev:4; /* major revision identifier */ 113 u_int cp_imp:8; /* implementation identifier */ 114 u_int pad1:16; /* reserved */ 115 #endif 116 } cpu; 117 }; 118 119 /* 120 * MIPS CPU types (cp_imp). 121 */ 122 #define MIPS_R2000 0x01 123 #define MIPS_R3000 0x02 124 #define MIPS_R6000 0x03 125 #define MIPS_R4000 0x04 126 #define MIPS_R6000A 0x06 127 128 /* 129 * MIPS FPU types 130 */ 131 #define MIPS_R2010 0x02 132 #define MIPS_R3010 0x03 133 #define MIPS_R6010 0x04 134 #define MIPS_R4010 0x05 135 136 #ifdef KERNEL 137 #ifdef notdef 138 union cpuprid cpu; 139 union cpuprid fpu; 140 #endif 141 u_int machDataCacheSize; 142 u_int machInstCacheSize; 143 extern struct intr_tab intr_tab[]; 144 #endif 145 146 /* 147 * Enable realtime clock (always enabled). 148 */ 149 #define enablertclock() 150 151 #endif /* _CPU_H_ */ 152