/*      $NetBSD: core_machdep.c,v 1.10 2022/09/29 07:00:46 skrll Exp $  */

/*
 * Copyright (c) 1988 University of Utah.
 * Copyright (c) 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department and Ralph Campbell.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 * from: Utah Hdr: vm_machdep.c 1.21 91/04/06
 *
 *      @(#)vm_machdep.c        8.3 (Berkeley) 1/4/94
 */

#include <sys/cdefs.h>                  /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: core_machdep.c,v 1.10 2022/09/29 07:00:46 skrll Exp $");

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

#include <uvm/uvm_extern.h>

#include <mips/locore.h>
#include <mips/pcb.h>
#include <mips/cache.h>
#include <mips/regnum.h>
#include <mips/pte.h>
#include <mips/psl.h>

/*
 * Dump the machine specific segment at the start of a core dump.
 */
int
cpu_coredump(struct lwp *l, struct coredump_iostate *iocookie,
    struct core *chdr)
{
        int error;
        struct coreseg cseg;
        struct cpustate {
                struct trapframe tf;
                struct fpreg fpregs;
        } cpustate;

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

        pcu_save_all(l);
        cpustate.tf = *l->l_md.md_utf;
        cpustate.fpregs = ((struct pcb *)lwp_getpcb(l))->pcb_fpregs;

        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,
            &cpustate, chdr->c_cpusize), ENOSYS, error);

        return error;
}