FreeBSD/Linux Kernel Cross Reference
sys/sys/core.h

     /*      $NetBSD: core.h,v 1.11 2008/04/28 20:24:10 martin Exp $ */
     
     /*-
      * Copyright (c) 1998 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Paul Kranenburg.
      *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    #ifndef _SYS_CORE_H_
    #define _SYS_CORE_H_
    
    #define COREMAGIC       0507
    #define CORESEGMAGIC    0510
    
    /*
     * The core structure's c_midmag field (like exec's a_midmag) is a
     * network-byteorder encoding of this int
     *      FFFFFFmmmmmmmmmmMMMMMMMMMMMMMMMM
     * Where `F' is 6 bits of flag (currently unused),
     *       `m' is 10 bits of machine-id, and
     *       `M' is 16 bits worth of magic number, ie. COREMAGIC.
     * The macros below will set/get the needed fields.
     */
    #define CORE_GETMAGIC(c)  (  ntohl(((c).c_midmag))        & 0xffff )
    #define CORE_GETMID(c)    ( (ntohl(((c).c_midmag)) >> 16) & 0x03ff )
    #define CORE_GETFLAG(c)   ( (ntohl(((c).c_midmag)) >> 26) & 0x03f  )
    #define CORE_SETMAGIC(c,mag,mid,flag) ( (c).c_midmag = htonl ( \
                            ( ((flag) & 0x3f)   << 26) | \
                            ( ((mid)  & 0x03ff) << 16) | \
                            ( ((mag)  & 0xffff)      ) ) )
    
    /* Flag definitions */
    #define CORE_CPU        1
    #define CORE_DATA       2
    #define CORE_STACK      4
    
    /*
     * A core file consists of a header followed by a number of segments.
     * Each segment is preceded by a `coreseg' structure giving the
     * segment's type, the virtual address where the bits resided in
     * process address space and the size of the segment.
     *
     * The core header specifies the lengths of the core header itself and
     * each of the following core segment headers to allow for any machine
     * dependent alignment requirements.
     */
    
    struct core {
            uint32_t c_midmag;              /* magic, id, flags */
            uint16_t c_hdrsize;             /* Size of this header (machdep algn) */
            uint16_t c_seghdrsize;          /* Size of a segment header */
            uint32_t c_nseg;                /* # of core segments */
            char    c_name[MAXCOMLEN+1];    /* Copy of p->p_comm */
            uint32_t c_signo;               /* Killing signal */
            u_long  c_ucode;                /* Hmm ? */
            u_long  c_cpusize;              /* Size of machine dependent segment */
            u_long  c_tsize;                /* Size of traditional text segment */
            u_long  c_dsize;                /* Size of traditional data segment */
            u_long  c_ssize;                /* Size of traditional stack segment */
    };
    
    struct coreseg {
            uint32_t c_midmag;              /* magic, id, flags */
            u_long  c_addr;                 /* Virtual address of segment */
            u_long  c_size;                 /* Size of this segment */
    };
    
    /*
     * 32-bit versions of the above.
     */
    struct core32 {
            uint32_t c_midmag;              /* magic, id, flags */
            uint16_t c_hdrsize;             /* Size of this header (machdep algn) */
            uint16_t c_seghdrsize;          /* Size of a segment header */
            uint32_t c_nseg;                /* # of core segments */
            char    c_name[MAXCOMLEN+1];    /* Copy of p->p_comm */
           uint32_t c_signo;               /* Killing signal */
           u_int   c_ucode;                /* Hmm ? */
           u_int   c_cpusize;              /* Size of machine dependent segment */
           u_int   c_tsize;                /* Size of traditional text segment */
           u_int   c_dsize;                /* Size of traditional data segment */
           u_int   c_ssize;                /* Size of traditional stack segment */
   };
   
   struct coreseg32 {
           uint32_t c_midmag;              /* magic, id, flags */
           u_int   c_addr;                 /* Virtual address of segment */
           u_int   c_size;                 /* Size of this segment */
   };
   
   #endif /* !_SYS_CORE_H_ */

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