1 /* Copyright (c) 1993 Adam Glass 2 * Copyright (c) 1988 University of Utah. 3 * Copyright (c) 1982, 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * the Systems Programming Group of the University of Utah Computer 8 * Science Department. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 39 * 40 * from: @(#)cpu.h 7.7 (Berkeley) 6/27/91 41 * cpu.h,v 1.2 1993/05/22 07:58:17 cgd Exp 42 */ 43 44 /* 45 * Exported definitions unique to sun3/68k cpu support. 46 */ 47 48 /* 49 * definitions of cpu-dependent requirements 50 * referenced in generic code 51 */ 52 #define COPY_SIGCODE /* copy sigcode above user stack in exec */ 53 54 /* 55 * function vs. inline configuration; 56 * these are defined to get generic functions 57 * rather than inline or machine-dependent implementations 58 */ 59 #define NEED_MINMAX /* need {,i,l,ul}{min,max} functions */ 60 #undef NEED_FFS /* don't need ffs function */ 61 #undef NEED_BCMP /* don't need bcmp function */ 62 #undef NEED_STRLEN /* don't need strlen function */ 63 64 #define cpu_exec(p) /* nothing */ 65 #define cpu_wait(p) /* nothing */ 66 67 /* 68 * Arguments to hardclock, softclock and gatherstats 69 * encapsulate the previous machine state in an opaque 70 * clockframe; for hp300, use just what the hardware 71 * leaves on the stack. 72 */ 73 typedef struct intrframe { 74 int pc; 75 int ps; 76 } clockframe; 77 78 #define CLKF_USERMODE(framep) (((framep)->ps & PSL_S) == 0) 79 #define CLKF_BASEPRI(framep) (((framep)->ps & PSL_IPL7) == 0) 80 #define CLKF_PC(framep) ((framep)->pc) 81 82 /* 83 * Preempt the current process if in interrupt from user mode, 84 * or after the current trap/syscall if in system mode. 85 */ 86 #define need_resched() { want_resched++; aston(); } 87 88 /* 89 * Give a profiling tick to the current process from the softclock 90 * interrupt. On hp300, request an ast to send us through trap(), 91 * marking the proc as needing a profiling tick. 92 */ 93 #define profile_tick(p, framep) { (p)->p_flag |= SOWEUPC; aston(); } 94 95 /* 96 * Notify the current process (p) that it has a signal pending, 97 * process as soon as possible. 98 */ 99 #define signotify(p) aston() 100 101 #define aston() (astpending++) 102 103 int astpending; /* need to trap before returning to user mode */ 104 int want_resched; /* resched() was called */ 105 106 #include <machine/mtpr.h> 107 108 /* values for machineid */ 109 110 #define CPU_ARCH_MASK 0xf0 111 #define SUN3_ARCH 0x10 112 #define SUN3_IMPL_MASK 0x0f 113 #define SUN3_MACH_160 0x01 114 #define SUN3_MACH_50 0x02 115 #define SUN3_MACH_260 0x03 116 #define SUN3_MACH_110 0x04 117 #define SUN3_MACH_60 0x07 118 #define SUN3_MACH_E 0x08 119 120 #ifdef KERNEL 121 extern int machineid, mmutype, ectype; 122 extern char *intiobase, *intiolimit; 123 124 #endif 125 126 /* 680X0 function codes */ 127 #define FC_USERD 1 /* user data space */ 128 #define FC_USERP 2 /* user program space */ 129 #define FC_CONTROL 3 /* HPMMU: clear TLB entries */ 130 #define FC_SUPERD 5 /* supervisor data space */ 131 #define FC_SUPERP 6 /* supervisor program space */ 132 #define FC_CPU 7 /* CPU space */ 133 134 /* fields in the 68020 cache control register */ 135 #define IC_ENABLE 0x0001 /* enable instruction cache */ 136 #define IC_FREEZE 0x0002 /* freeze instruction cache */ 137 #define IC_CE 0x0004 /* clear instruction cache entry */ 138 #define IC_CLR 0x0008 /* clear entire instruction cache */ 139 140 141