| | 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 | * $FreeBSD: src/sys/i386/include/cpu.h,v 1.43.2.2 2001/06/15 09:37:57 scottl Exp $ |
| | 38 | */ |
| | 39 | |
| | 40 | #ifndef _CPU_CPU_H_ |
| | 41 | #define _CPU_CPU_H_ |
| | 42 | |
| | 43 | /* |
| | 44 | * Definitions unique to i386 cpu support. |
| | 45 | */ |
| | 46 | #ifndef _CPU_PSL_H_ |
| | 47 | #include <machine/psl.h> |
| | 48 | #endif |
| | 49 | #ifndef _CPU_FRAME_H_ |
| | 50 | #include <machine/frame.h> |
| | 51 | #endif |
| | 52 | #ifndef _CPU_SEGMENTS_H_ |
| | 53 | #include <machine/segments.h> |
| | 54 | #endif |
| | 55 | |
| | 56 | /* |
| | 57 | * definitions of cpu-dependent requirements |
| | 58 | * referenced in generic code |
| | 59 | */ |
| | 60 | |
| | 61 | #define cpu_exec(p) /* nothing */ |
| | 62 | #define cpu_swapin(p) /* nothing */ |
| | 63 | #define cpu_setstack(lp, ap) ((lp)->lwp_md.md_regs[SP] = (ap)) |
| | 64 | |
| | 65 | #define CLKF_INTR(intr_nest) ((intr_nest) > 1) |
| | 66 | #define CLKF_INTR_TD(td) ((td)->td_flags & TDF_INTTHREAD) |
| | 67 | #define CLKF_PC(framep) ((framep)->if_eip) |
| | 68 | |
| | 69 | /* |
| | 70 | * Preempt the current process if in interrupt from user mode, |
| | 71 | * or after the current trap/syscall if in system mode. |
| | 72 | * |
| | 73 | * We now have to use a locked bus cycle due to LWKT_RESCHED/WAKEUP |
| | 74 | * signalling by other cpus. |
| | 75 | */ |
| | 76 | #define need_lwkt_resched() \ |
| | 77 | atomic_set_int(&mycpu->gd_reqflags, RQF_AST_LWKT_RESCHED) |
| | 78 | #define need_user_resched() \ |
| | 79 | atomic_set_int(&mycpu->gd_reqflags, RQF_AST_USER_RESCHED) |
| | 80 | #define need_proftick() \ |
| | 81 | atomic_set_int(&mycpu->gd_reqflags, RQF_AST_OWEUPC) |
| | 82 | #define need_ipiq() \ |
| | 83 | atomic_set_int(&mycpu->gd_reqflags, RQF_IPIQ) |
| | 84 | #define signotify() \ |
| | 85 | atomic_set_int(&mycpu->gd_reqflags, RQF_AST_SIGNAL) |
| | 86 | #define clear_user_resched() \ |
| | 87 | atomic_clear_int(&mycpu->gd_reqflags, RQF_AST_USER_RESCHED) |
| | 88 | #define clear_lwkt_resched() \ |
| | 89 | atomic_clear_int(&mycpu->gd_reqflags, RQF_AST_LWKT_RESCHED) |
| | 90 | #define clear_quickret() \ |
| | 91 | atomic_clear_int(&mycpu->gd_reqflags, RQF_QUICKRET) |
| | 92 | #define user_resched_wanted() \ |
| | 93 | (mycpu->gd_reqflags & RQF_AST_USER_RESCHED) |
| | 94 | #define lwkt_resched_wanted() \ |
| | 95 | (mycpu->gd_reqflags & RQF_AST_LWKT_RESCHED) |
| | 96 | #define any_resched_wanted() \ |
| | 97 | (mycpu->gd_reqflags & (RQF_AST_LWKT_RESCHED|RQF_AST_USER_RESCHED)) |
| | 98 | |
| | 99 | /* |
| | 100 | * CTL_MACHDEP definitions. |
| | 101 | */ |
| | 102 | #define CPU_CONSDEV 1 /* cdev_t: console terminal device */ |
| | 103 | #define CPU_ADJKERNTZ 2 /* int: timezone offset (seconds) */ |
| | 104 | #define CPU_DISRTCSET 3 /* int: disable resettodr() call */ |
| | 105 | #define CPU_BOOTINFO 4 /* struct: bootinfo */ |
| | 106 | #define CPU_WALLCLOCK 5 /* int: indicates wall CMOS clock */ |
| | 107 | #define CPU_MAXID 6 /* number of valid machdep ids */ |
| | 108 | |
| | 109 | #define CTL_MACHDEP_NAMES { \ |
| | 110 | { 0, 0 }, \ |
| | 111 | { "console_device", CTLTYPE_STRUCT }, \ |
| | 112 | { "adjkerntz", CTLTYPE_INT }, \ |
| | 113 | { "disable_rtc_set", CTLTYPE_INT }, \ |
| | 114 | { "bootinfo", CTLTYPE_STRUCT }, \ |
| | 115 | { "wall_cmos_clock", CTLTYPE_INT }, \ |
| | 116 | } |
| | 117 | |
| | 118 | #ifdef _KERNEL |
| | 119 | |
| | 120 | struct lwp; |
| | 121 | |
| | 122 | extern char btext[]; |
| | 123 | extern char etext[]; |
| | 124 | |
| | 125 | void fork_trampoline (void); |
| | 126 | void generic_lwp_return (struct lwp *, struct trapframe *); |
| | 127 | void fork_return (struct lwp *, struct trapframe *); |
| | 128 | |
| | 129 | #endif |
| | 130 | |
| | 131 | #endif /* !_CPU_CPU_H_ */ |
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