Return to pcb.h CVS log

Up to [local] / sys / arch / i386 / include

Annotation of sys/arch/i386/include/pcb.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: pcb.h,v 1.13 2004/07/02 16:29:55 niklas Exp $ */
        !             2: /*     $NetBSD: pcb.h,v 1.21 1996/01/08 13:51:42 mycroft Exp $ */
        !             3:
        !             4: /*-
        !             5:  * Copyright (c) 1995 Charles M. Hannum.  All rights reserved.
        !             6:  * Copyright (c) 1990 The Regents of the University of California.
        !             7:  * All rights reserved.
        !             8:  *
        !             9:  * This code is derived from software contributed to Berkeley by
        !            10:  * William Jolitz.
        !            11:  *
        !            12:  * Redistribution and use in source and binary forms, with or without
        !            13:  * modification, are permitted provided that the following conditions
        !            14:  * are met:
        !            15:  * 1. Redistributions of source code must retain the above copyright
        !            16:  *    notice, this list of conditions and the following disclaimer.
        !            17:  * 2. Redistributions in binary form must reproduce the above copyright
        !            18:  *    notice, this list of conditions and the following disclaimer in the
        !            19:  *    documentation and/or other materials provided with the distribution.
        !            20:  * 3. 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:  *     @(#)pcb.h       5.10 (Berkeley) 5/12/91
        !            37:  */
        !            38:
        !            39: /*
        !            40:  * Intel 386 process control block
        !            41:  */
        !            42:
        !            43: #ifndef _I386_PCB_H_
        !            44: #define _I386_PCB_H_
        !            45:
        !            46: #include <sys/signal.h>
        !            47:
        !            48: #include <machine/segments.h>
        !            49: #include <machine/tss.h>
        !            50: #include <machine/npx.h>
        !            51: #include <machine/sysarch.h>
        !            52:
        !            53: #define        NIOPORTS        1024            /* # of ports we allow to be mapped */
        !            54:
        !            55: struct pcb {
        !            56:        struct  i386tss pcb_tss;
        !            57: #define        pcb_cr3 pcb_tss.tss_cr3
        !            58: #define        pcb_esp pcb_tss.tss_esp
        !            59: #define        pcb_ebp pcb_tss.tss_ebp
        !            60: #define        pcb_cs  pcb_tss.tss_cs
        !            61: #define        pcb_ldt_sel     pcb_tss.tss_ldt
        !            62:        int     pcb_tss_sel;
        !            63:        union   descriptor *pcb_ldt;    /* per process (user) LDT */
        !            64:        int     pcb_ldt_len;            /*      number of LDT entries */
        !            65:        int     pcb_cr0;                /* saved image of CR0 */
        !            66:        int     pcb_pad[2];             /* savefpu on 16-byte boundary */
        !            67:        union   savefpu pcb_savefpu;    /* floating point state for FPU */
        !            68:        struct  emcsts pcb_saveemc;     /* Cyrix EMC state */
        !            69: /*
        !            70:  * Software pcb (extension)
        !            71:  */
        !            72:        caddr_t pcb_onfault;            /* copyin/out fault recovery */
        !            73:        int     vm86_eflags;            /* virtual eflags for vm86 mode */
        !            74:        int     vm86_flagmask;          /* flag mask for vm86 mode */
        !            75:        void    *vm86_userp;            /* XXX performance hack */
        !            76:        struct  pmap *pcb_pmap;         /* back pointer to our pmap */
        !            77:        struct  cpu_info *pcb_fpcpu;    /* cpu holding our fpu state */
        !            78:        u_long  pcb_iomap[NIOPORTS/32]; /* I/O bitmap */
        !            79:        u_char  pcb_iomap_pad;  /* required; must be 0xff, says intel */
        !            80: };
        !            81:
        !            82: /*
        !            83:  * The pcb is augmented with machine-dependent additional data for
        !            84:  * core dumps. For the i386, there is nothing to add.
        !            85:  */
        !            86: struct md_coredump {
        !            87:        long    md_pad[8];
        !            88: };
        !            89:
        !            90: #endif /* _I386_PCB_H_ */