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Annotation of sys/arch/hppa/include/pcb.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: pcb.h,v 1.11 2007/07/29 20:15:56 kettenis Exp $       */
                      2:
                      3: /*
                      4:  * Copyright (c) 1999-2004 Michael Shalayeff
                      5:  * All rights reserved.
                      6:  *
                      7:  * Redistribution and use in source and binary forms, with or without
                      8:  * modification, are permitted provided that the following conditions
                      9:  * are met:
                     10:  * 1. Redistributions of source code must retain the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer.
                     12:  * 2. Redistributions in binary form must reproduce the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer in the
                     14:  *    documentation and/or other materials provided with the distribution.
                     15:  *
                     16:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     17:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     18:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     19:  * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
                     20:  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
                     21:  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
                     22:  * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     23:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
                     24:  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
                     25:  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
                     26:  * THE POSSIBILITY OF SUCH DAMAGE.
                     27:  */
                     28:
                     29:
                     30: #ifndef _MACHINE_PCB_H_
                     31: #define _MACHINE_PCB_H_
                     32:
                     33: #include <machine/reg.h>
                     34:
                     35: struct pcb {
                     36:        u_int64_t pcb_fpregs[HPPA_NFPREGS+1];   /* not in the trapframe */
                     37:        vaddr_t         pcb_uva;        /* KVA for U-area */
                     38:
                     39:        /*
                     40:         * The members above are primarily accessed by there physical
                     41:         * address, wheras the members below are accessed exclusively
                     42:         * by there virtual address.  Unfortunately this structure
                     43:         * ends up being non-equivalently mapped, which will cause
                     44:         * data corruption if those members share a cache line.  Since
                     45:         * the maximum cache line size is 64 bytes, adding 64 bytes of
                     46:         * padding makes sure that will never happen.
                     47:         */
                     48:        u_char          pcb_pad[64];
                     49:
                     50:        u_int           pcb_ksp;        /* kernel sp for ctxsw */
                     51:        u_int           pcb_onfault;    /* SW copy fault handler */
                     52:        pa_space_t      pcb_space;      /* copy pmap_space, for asm's sake */
                     53:
                     54:        /* things used for hpux emulation */
                     55:        void            *pcb_sigreturn;
                     56:        u_int           pcb_srcookie;
                     57:        u_int           pcb_sclen;
                     58: };
                     59:
                     60: struct md_coredump {
                     61:        struct reg md_reg;
                     62:        struct fpreg md_fpreg;
                     63: };
                     64:
                     65:
                     66: #endif /* _MACHINE_PCB_H_ */