/*      $NetBSD: core_machdep.c,v 1.9 2024/09/08 09:36:50 rillig Exp $       */

/*
 * Copyright (c) 1994 Ludd, University of Lule}, Sweden.
 * All rights reserved.
 *
 * 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 AUTHOR ``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 AUTHOR 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.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: core_machdep.c,v 1.9 2024/09/08 09:36:50 rillig Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/exec.h>
#include <sys/core.h>
#include <sys/compat_stub.h>

#include <sys/exec_aout.h>

#include <machine/pcb.h>
#include <machine/frame.h>

/*
 * Dump the machine specific header information at the start of a core dump.
 * First put all regs in PCB for debugging purposes. This is not a good
 * way to do this, but good for my purposes so far.
 */
int
cpu_coredump(struct lwp *l, struct coredump_iostate *iocookie,
    struct core *chdr)
{
        struct md_coredump md_core;
        struct coreseg cseg;
        int error;

        if (iocookie == NULL) {
                CORE_SETMAGIC(*chdr, COREMAGIC, MID_MACHINE, 0);
                chdr->c_hdrsize = sizeof(struct core);
                chdr->c_seghdrsize = sizeof(struct coreseg);
                chdr->c_cpusize = sizeof(struct md_coredump);
                chdr->c_nseg++;
                return 0;
        }

        md_core.md_tf = *l->l_md.md_utf;        /*XXX*/

        CORE_SETMAGIC(cseg, CORESEGMAGIC, MID_MACHINE, CORE_CPU);
        cseg.c_addr = 0;
        cseg.c_size = chdr->c_cpusize;

        MODULE_HOOK_CALL(coredump_write_hook, (iocookie, UIO_SYSSPACE, &cseg,
            chdr->c_seghdrsize), ENOSYS, error);
        if (error)
                return error;

        MODULE_HOOK_CALL(coredump_write_hook, (iocookie, UIO_SYSSPACE, &md_core,
            sizeof(md_core)), ENOSYS, error);

        return error;
}