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/cpu/i386/include/cpu.h,v 1.25 2007/03/01 01:46:52 corecode Exp $ 39 */ 40 41 #ifndef _CPU_CPU_H_ 42 #define _CPU_CPU_H_ 43 44 /* 45 * Definitions unique to x86_64 cpu support. 46 */ 47 #ifndef _CPU_PSL_H_ 48 #include <machine/psl.h> 49 #endif 50 #ifndef _CPU_FRAME_H_ 51 #include <machine/frame.h> 52 #endif 53 #ifndef _CPU_SEGMENTS_H_ 54 #include <machine/segments.h> 55 #endif 56 57 /* 58 * definitions of cpu-dependent requirements 59 * referenced in generic code 60 */ 61 62 #define cpu_exec(p) /* nothing */ 63 #define cpu_swapin(p) /* nothing */ 64 #define cpu_setstack(lp, ap) ((lp)->lwp_md.md_regs[SP] = (ap)) 65 66 #define CLKF_INTR(intr_nest) ((intr_nest) > 1) 67 #define CLKF_INTR_TD(td) ((td)->td_flags & TDF_INTTHREAD) 68 #define CLKF_PC(framep) ((framep)->if_rip) 69 70 /* 71 * Preempt the current process if in interrupt from user mode, 72 * or after the current trap/syscall if in system mode. 73 * 74 * We do not have to use a locked bus cycle but we do have to use an 75 * atomic instruction because an interrupt on the local cpu can modify 76 * the gd_reqflags field. 77 */ 78 #define need_lwkt_resched() \ 79 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_LWKT_RESCHED) 80 #define need_user_resched() \ 81 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_USER_RESCHED) 82 #define need_proftick() \ 83 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_OWEUPC) 84 #define need_ipiq() \ 85 atomic_set_int(&mycpu->gd_reqflags, RQF_IPIQ) 86 #define signotify() \ 87 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_SIGNAL) 88 #define sigupcall() \ 89 atomic_set_int(&mycpu->gd_reqflags, RQF_AST_UPCALL) 90 #define clear_user_resched() \ 91 atomic_clear_int(&mycpu->gd_reqflags, RQF_AST_USER_RESCHED) 92 #define clear_lwkt_resched() \ 93 atomic_clear_int(&mycpu->gd_reqflags, RQF_AST_LWKT_RESCHED) 94 #define clear_quickret() \ 95 atomic_clear_int(&mycpu->gd_reqflags, RQF_QUICKRET) 96 #define user_resched_wanted() \ 97 (mycpu->gd_reqflags & RQF_AST_USER_RESCHED) 98 #define lwkt_resched_wanted() \ 99 (mycpu->gd_reqflags & RQF_AST_LWKT_RESCHED) 100 #define any_resched_wanted() \ 101 (mycpu->gd_reqflags & (RQF_AST_LWKT_RESCHED|RQF_AST_USER_RESCHED)) 102 103 /* 104 * CTL_MACHDEP definitions. 105 */ 106 #define CPU_CONSDEV 1 /* cdev_t: console terminal device */ 107 #define CPU_ADJKERNTZ 2 /* int: timezone offset (seconds) */ 108 #define CPU_DISRTCSET 3 /* int: disable resettodr() call */ 109 #define CPU_BOOTINFO 4 /* struct: bootinfo */ 110 #define CPU_WALLCLOCK 5 /* int: indicates wall CMOS clock */ 111 #define CPU_MAXID 6 /* number of valid machdep ids */ 112 113 #define CTL_MACHDEP_NAMES { \ 114 { 0, 0 }, \ 115 { "console_device", CTLTYPE_STRUCT }, \ 116 { "adjkerntz", CTLTYPE_INT }, \ 117 { "disable_rtc_set", CTLTYPE_INT }, \ 118 { "bootinfo", CTLTYPE_STRUCT }, \ 119 { "wall_cmos_clock", CTLTYPE_INT }, \ 120 } 121 122 #ifdef _KERNEL 123 124 struct lwp; 125 126 extern char btext[]; 127 extern char etext[]; 128 129 void fork_trampoline (void); 130 void generic_lwp_return (struct lwp *, struct trapframe *); 131 void fork_return (struct lwp *, struct trapframe *); 132 133 #endif 134 135 #endif /* !_CPU_CPU_H_ */ 136