1 /* $NetBSD: cpu.h,v 1.25 1995/03/28 18:16:47 jtc 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 COPY_SIGCODE /* copy sigcode above user stack in exec */ 56 57 #define cpu_exec(p) /* nothing */ 58 #define cpu_swapin(p) /* nothing */ 59 #define cpu_wait(p) /* nothing */ 60 #define cpu_set_init_frame(p,frame) (p->p_md.md_regs = frame) 61 62 /* 63 * Arguments to hardclock, softclock and statclock 64 * encapsulate the previous machine state in an opaque 65 * clockframe; for now, use generic intrframe. 66 * 67 * XXX intrframe has a lot of gunk we don't need. 68 */ 69 #define clockframe intrframe 70 71 #define CLKF_USERMODE(frame) (ISPL((frame)->if_cs) == SEL_UPL) 72 #define CLKF_BASEPRI(frame) ((frame)->if_ppl == 0) 73 #define CLKF_PC(frame) ((frame)->if_eip) 74 #define CLKF_INTR(frame) (0) /* XXX should have an interrupt stack */ 75 76 /* 77 * Preempt the current process if in interrupt from user mode, 78 * or after the current trap/syscall if in system mode. 79 */ 80 int want_resched; /* resched() was called */ 81 #define need_resched() (want_resched = 1, setsoftast()) 82 83 /* 84 * Give a profiling tick to the current process when the user profiling 85 * buffer pages are invalid. On the i386, request an ast to send us 86 * through trap(), marking the proc as needing a profiling tick. 87 */ 88 #define need_proftick(p) ((p)->p_flag |= P_OWEUPC, setsoftast()) 89 90 /* 91 * Notify the current process (p) that it has a signal pending, 92 * process as soon as possible. 93 */ 94 #define signotify(p) setsoftast() 95 96 /* 97 * pull in #defines for kinds of processors 98 */ 99 #include <machine/cputypes.h> 100 101 struct cpu_nameclass { 102 char *cpu_name; 103 int cpu_class; 104 }; 105 106 #ifdef _KERNEL 107 extern int cpu; 108 extern int cpu_class; 109 extern struct cpu_nameclass i386_cpus[]; 110 #endif 111 112 /* 113 * CTL_MACHDEP definitions. 114 */ 115 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 116 #define CPU_MAXID 2 /* number of valid machdep ids */ 117 118 #define CTL_MACHDEP_NAMES { \ 119 { 0, 0 }, \ 120 { "console_device", CTLTYPE_STRUCT }, \ 121 } 122 123 #endif /* !_I386_CPU_H_ */ 124