cpu.h revision 1.37
1 /* $NetBSD: cpu.h,v 1.37 1996/11/18 01:08:00 fvdl Exp $ */ 2 3 /*- 4 * Copyright (c) 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * William Jolitz. 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 * @(#)cpu.h 5.4 (Berkeley) 5/9/91 39 */ 40 41 #ifndef _I386_CPU_H_ 42 #define _I386_CPU_H_ 43 44 /* 45 * Definitions unique to i386 cpu support. 46 */ 47 #include <machine/psl.h> 48 #include <machine/frame.h> 49 #include <machine/segments.h> 50 51 /* 52 * definitions of cpu-dependent requirements 53 * referenced in generic code 54 */ 55 #define cpu_swapin(p) /* nothing */ 56 #define cpu_wait(p) /* nothing */ 57 58 /* 59 * Arguments to hardclock, softclock and statclock 60 * encapsulate the previous machine state in an opaque 61 * clockframe; for now, use generic intrframe. 62 * 63 * XXX intrframe has a lot of gunk we don't need. 64 */ 65 #define clockframe intrframe 66 67 #define CLKF_USERMODE(frame) USERMODE((frame)->if_cs, (frame)->if_eflags) 68 #define CLKF_BASEPRI(frame) ((frame)->if_ppl == 0) 69 #define CLKF_PC(frame) ((frame)->if_eip) 70 #define CLKF_INTR(frame) (0) /* XXX should have an interrupt stack */ 71 72 /* 73 * Preempt the current process if in interrupt from user mode, 74 * or after the current trap/syscall if in system mode. 75 */ 76 int want_resched; /* resched() was called */ 77 #define need_resched() (want_resched = 1, setsoftast()) 78 79 /* 80 * Give a profiling tick to the current process when the user profiling 81 * buffer pages are invalid. On the i386, request an ast to send us 82 * through trap(), marking the proc as needing a profiling tick. 83 */ 84 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, setsoftast()) 85 86 /* 87 * Notify the current process (p) that it has a signal pending, 88 * process as soon as possible. 89 */ 90 #define signotify(p) setsoftast() 91 92 /* 93 * We need a machine-independent name for this. 94 */ 95 #define DELAY(x) delay(x) 96 void delay __P((int)); 97 98 /* 99 * pull in #defines for kinds of processors 100 */ 101 #include <machine/cputypes.h> 102 103 struct cpu_nameclass { 104 char *cpu_name; 105 int cpu_class; 106 }; 107 108 #ifdef _KERNEL 109 extern int cpu; 110 extern int cpu_class; 111 extern struct cpu_nameclass i386_cpus[]; 112 113 /* autoconf.c */ 114 void configure __P((void)); 115 116 /* machdep.c */ 117 void delay __P((int)); 118 void dumpconf __P((void)); 119 void cpu_reset __P((void)); 120 121 /* locore.s */ 122 struct region_descriptor; 123 void lgdt __P((struct region_descriptor *)); 124 void fillw __P((short, void *, size_t)); 125 126 struct pcb; 127 void savectx __P((struct pcb *)); 128 void switch_exit __P((struct proc *)); 129 void proc_trampoline __P((void)); 130 131 /* clock.c */ 132 void startrtclock __P((void)); 133 134 /* npx.c */ 135 void npxdrop __P((void)); 136 void npxsave __P((void)); 137 138 /* vm_machdep.c */ 139 int kvtop __P((caddr_t)); 140 141 #ifdef MATH_EMULATE 142 /* math_emulate.c */ 143 int math_emulate __P((struct trapframe *)); 144 #endif 145 146 #ifdef USER_LDT 147 /* sys_machdep.h */ 148 void i386_user_cleanup __P((struct pcb *)); 149 int i386_get_ldt __P((struct proc *, char *, register_t *)); 150 int i386_set_ldt __P((struct proc *, char *, register_t *)); 151 #endif 152 153 /* isa_machdep.c */ 154 void isa_defaultirq __P((void)); 155 int isa_nmi __P((void)); 156 157 #ifdef VM86 158 /* vm86.c */ 159 void vm86_gpfault __P((struct proc *, int)); 160 #endif /* VM86 */ 161 162 /* trap.c */ 163 void child_return __P((struct proc *, struct trapframe)); 164 165 #ifdef GENERIC 166 /* swapgeneric.c */ 167 void setconf __P((void)); 168 #endif /* GENERIC */ 169 170 #endif /* _KERNEL */ 171 172 /* 173 * CTL_MACHDEP definitions. 174 */ 175 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 176 #define CPU_BIOSBASEMEM 2 /* int: bios-reported base mem (K) */ 177 #define CPU_BIOSEXTMEM 3 /* int: bios-reported ext. mem (K) */ 178 #define CPU_NKPDE 4 /* int: number of kernel PDEs */ 179 #define CPU_MAXID 5 /* number of valid machdep ids */ 180 181 #define CTL_MACHDEP_NAMES { \ 182 { 0, 0 }, \ 183 { "console_device", CTLTYPE_STRUCT }, \ 184 { "biosbasemem", CTLTYPE_INT }, \ 185 { "biosextmem", CTLTYPE_INT }, \ 186 { "nkpde", CTLTYPE_INT }, \ 187 } 188 189 #endif /* !_I386_CPU_H_ */ 190
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