| | 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 | * $DragonFly: src/sys/i386/include/Attic/cpu.h,v 1.14 2004/02/17 19:38:53 dillon Exp $ |
| | 39 | */ |
| | 40 | |
| | 41 | #ifndef _MACHINE_CPU_H_ |
| | 42 | #define _MACHINE_CPU_H_ |
| | 43 | |
| | 44 | /* |
| | 45 | * Definitions unique to i386 cpu support. |
| | 46 | */ |
| | 47 | #include "psl.h" |
| | 48 | #include "frame.h" |
| | 49 | #include "segments.h" |
| | 50 | |
| | 51 | /* |
| | 52 | * definitions of cpu-dependent requirements |
| | 53 | * referenced in generic code |
| | 54 | */ |
| | 55 | #undef COPY_SIGCODE /* don't copy sigcode above user stack in exec */ |
| | 56 | |
| | 57 | #define cpu_exec(p) /* nothing */ |
| | 58 | #define cpu_swapin(p) /* nothing */ |
| | 59 | #define cpu_setstack(p, ap) ((p)->p_md.md_regs[SP] = (ap)) |
| | 60 | |
| | 61 | #define CLKF_USERMODE(framep) \ |
| | 62 | ((ISPL((framep)->if_cs) == SEL_UPL) || (framep->if_eflags & PSL_VM)) |
| | 63 | |
| | 64 | #define CLKF_INTR(framep) (mycpu->gd_intr_nesting_level > 1 || (curthread->td_flags & TDF_INTTHREAD)) |
| | 65 | #define CLKF_PC(framep) ((framep)->if_eip) |
| | 66 | |
| | 67 | /* |
| | 68 | * Preempt the current process if in interrupt from user mode, |
| | 69 | * or after the current trap/syscall if in system mode. |
| | 70 | * |
| | 71 | * We do not have to use a locked bus cycle but we do have to use an |
| | 72 | * atomic instruction because an interrupt on the local cpu can modify |
| | 73 | * the gd_reqflags field. |
| | 74 | */ |
| | 75 | #define need_resched() \ |
| | 76 | atomic_set_int_nonlocked(&mycpu->gd_reqflags, RQF_AST_RESCHED) |
| | 77 | #define need_proftick() \ |
| | 78 | atomic_set_int_nonlocked(&mycpu->gd_reqflags, RQF_AST_OWEUPC) |
| | 79 | #define need_ipiq() \ |
| | 80 | atomic_set_int_nonlocked(&mycpu->gd_reqflags, RQF_IPIQ) |
| | 81 | #define signotify() \ |
| | 82 | atomic_set_int_nonlocked(&mycpu->gd_reqflags, RQF_AST_SIGNAL) |
| | 83 | #define sigupcall() \ |
| | 84 | atomic_set_int_nonlocked(&mycpu->gd_reqflags, RQF_AST_UPCALL) |
| | 85 | #define clear_resched() \ |
| | 86 | atomic_clear_int_nonlocked(&mycpu->gd_reqflags, RQF_AST_RESCHED) |
| | 87 | #define resched_wanted() \ |
| | 88 | (mycpu->gd_reqflags & RQF_AST_RESCHED) |
| | 89 | |
| | 90 | /* |
| | 91 | * CTL_MACHDEP definitions. |
| | 92 | */ |
| | 93 | #define CPU_CONSDEV 1 /* dev_t: console terminal device */ |
| | 94 | #define CPU_ADJKERNTZ 2 /* int: timezone offset (seconds) */ |
| | 95 | #define CPU_DISRTCSET 3 /* int: disable resettodr() call */ |
| | 96 | #define CPU_BOOTINFO 4 /* struct: bootinfo */ |
| | 97 | #define CPU_WALLCLOCK 5 /* int: indicates wall CMOS clock */ |
| | 98 | #define CPU_MAXID 6 /* number of valid machdep ids */ |
| | 99 | |
| | 100 | #define CTL_MACHDEP_NAMES { \ |
| | 101 | { 0, 0 }, \ |
| | 102 | { "console_device", CTLTYPE_STRUCT }, \ |
| | 103 | { "adjkerntz", CTLTYPE_INT }, \ |
| | 104 | { "disable_rtc_set", CTLTYPE_INT }, \ |
| | 105 | { "bootinfo", CTLTYPE_STRUCT }, \ |
| | 106 | { "wall_cmos_clock", CTLTYPE_INT }, \ |
| | 107 | } |
| | 108 | |
| | 109 | #ifdef _KERNEL |
| | 110 | extern char btext[]; |
| | 111 | extern char etext[]; |
| | 112 | |
| | 113 | void fork_trampoline (void); |
| | 114 | void fork_return (struct proc *, struct trapframe); |
| | 115 | #endif |
| | 116 | |
| | 117 | #endif /* !_MACHINE_CPU_H_ */ |
projects / dragonfly.git / blame_incremental