1 /*- 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * William Jolitz. 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 5.4 (Berkeley) 5/9/91 37 * $Id: cpu.h,v 1.21 1994/05/23 03:00:56 cgd Exp $ 38 */ 39 40 #ifndef _I386_CPU_H_ 41 #define _I386_CPU_H_ 42 43 /* 44 * Definitions unique to i386 cpu support. 45 */ 46 #include <machine/psl.h> 47 #include <machine/frame.h> 48 #include <machine/segments.h> 49 50 /* 51 * definitions of cpu-dependent requirements 52 * referenced in generic code 53 */ 54 #define COPY_SIGCODE /* copy sigcode above user stack in exec */ 55 56 #define cpu_exec(p) /* nothing */ 57 #define cpu_swapin(p) /* nothing */ 58 #define cpu_wait(p) /* nothing */ 59 60 /* 61 * Arguments to hardclock, softclock and statclock 62 * encapsulate the previous machine state in an opaque 63 * clockframe; for now, use generic intrframe. 64 * 65 * XXX intrframe has a lot of gunk we don't need. 66 */ 67 #define clockframe intrframe 68 69 #define CLKF_USERMODE(frame) (ISPL((frame)->if_cs) == SEL_UPL) 70 #define CLKF_BASEPRI(frame) ((frame)->if_ppl == 0) 71 #define CLKF_PC(frame) ((frame)->if_eip) 72 #define CLKF_INTR(frame) (0) /* XXX should have an interrupt stack */ 73 74 /* 75 * Preempt the current process if in interrupt from user mode, 76 * or after the current trap/syscall if in system mode. 77 */ 78 int want_resched; /* resched() was called */ 79 #define need_resched() (want_resched = 1, setsoftast()) 80 81 /* 82 * Give a profiling tick to the current process when the user profiling 83 * buffer pages are invalid. On the i386, request an ast to send us 84 * through trap(), marking the proc as needing a profiling tick. 85 */ 86 #define profile_tick(p, framep) ((p)->p_flag |= P_OWEUPC, setsoftast()) 87 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, setsoftast()) 88 89 /* 90 * Notify the current process (p) that it has a signal pending, 91 * process as soon as possible. 92 */ 93 #define signotify(p) setsoftast() 94 95 /* 96 * pull in #defines for kinds of processors 97 */ 98 #include <machine/cputypes.h> 99 100 struct cpu_nameclass { 101 char *cpu_name; 102 int cpu_class; 103 }; 104 105 #ifdef KERNEL 106 extern int cpu; 107 extern int cpu_class; 108 extern struct cpu_nameclass i386_cpus[]; 109 #endif 110 111 /* 112 * CTL_MACHDEP definitions. 113 */ 114 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 115 #define CPU_MAXID 2 /* number of valid machdep ids */ 116 117 #define CTL_MACHDEP_NAMES { \ 118 { 0, 0 }, \ 119 { "console_device", CTLTYPE_STRUCT }, \ 120 } 121 122 #endif /* !_I386_CPU_H_ */ 123