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 1.4 1993/11/07 17:42:46 wollman Exp $ 38 */ 39 40 #ifndef _MACHINE_CPU_H_ 41 #define _MACHINE_CPU_H_ 1 42 43 /* 44 * Definitions unique to i386 cpu support. 45 */ 46 #include "machine/frame.h" 47 #include "machine/segments.h" 48 #include <machine/spl.h> 49 50 /* 51 * definitions of cpu-dependent requirements 52 * referenced in generic code 53 */ 54 #undef COPY_SIGCODE /* don't copy sigcode above user stack in exec */ 55 56 #define cpu_exec(p) /* nothing */ 57 #define cpu_swapin(p) /* nothing */ 58 #define cpu_setstack(p, ap) (p)->p_md.md_regs = ap 59 #define cpu_set_init_frame(p, fp) (p)->p_md.md_regs = fp 60 61 #define CLKF_USERMODE(framep) (ISPL((framep)->cf_cs) == SEL_UPL) 62 #define CLKF_INTR(framep) (0) 63 #define CLKF_BASEPRI(framep) (((framep)->cf_ppl & ~SWI_AST_MASK) == 0) 64 #define CLKF_PC(framep) ((framep)->cf_eip) 65 66 #define resettodr() /* no todr to set */ 67 68 /* 69 * Preempt the current process if in interrupt from user mode, 70 * or after the current trap/syscall if in system mode. 71 */ 72 #define need_resched() { want_resched = 1; aston(); } 73 74 /* 75 * Give a profiling tick to the current process from the softclock 76 * interrupt. On tahoe, request an ast to send us through trap(), 77 * marking the proc as needing a profiling tick. 78 */ 79 #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 80 81 /* 82 * Notify the current process (p) that it has a signal pending, 83 * process as soon as possible. 84 */ 85 #define signotify(p) aston() 86 87 #define aston() setsoftast() 88 #define astoff() 89 90 /* 91 * pull in #defines for kinds of processors 92 */ 93 #include "machine/cputypes.h" 94 95 struct cpu_nameclass { 96 char *cpu_name; 97 int cpu_class; 98 }; 99 100 /* 101 * CTL_MACHDEP definitions. 102 */ 103 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 104 #define CPU_MAXID 2 /* number of valid machdep ids */ 105 106 #define CTL_MACHDEP_NAMES { \ 107 { 0, 0 }, \ 108 { "console_device", CTLTYPE_STRUCT }, \ 109 } 110 111 #ifdef KERNEL 112 extern int want_resched; /* resched was called */ 113 114 extern int cpu; 115 extern int cpu_class; 116 extern struct cpu_nameclass i386_cpus[]; 117 #endif 118 #endif /* _MACHINE_CPU_H_ */ 119