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/*-
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
#ifndef lint
static char sccsid[] = "@(#)md-sparc.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
#include <sys/param.h>
#include <sys/time.h>
#include <sys/file.h>
#include <sys/stat.h>
#include <sys/proc.h>
#include <sys/user.h>
#include <sys/sysctl.h>
#include <machine/vmparam.h>
#include <err.h>
#include <kvm.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include "extern.h"
#ifndef offsetof
#define offsetof(s, f) ((int)&((s *)0)->f)
#endif
static void
shift_page(fd, off, ssize)
register int fd;
register off_t off;
register int ssize;
{
char buffer[NBPG];
(void)lseek(fd, (off_t)-NBPG, SEEK_END);
for (; ssize > 0; ssize -= NBPG) {
(void)read(fd, buffer, NBPG);
(void)write(fd, buffer, NBPG);
(void)lseek(fd, (off_t)-2 * NBPG, SEEK_CUR);
}
}
/*
* Fix up the core image for the sparc. We need to flush any register
* windows that are cached in the pcb out to the user stack.
* Also, we need to get the trap frame and possible floating point state
* from the top of the kernel stack and store it in the pcb.
*/
void
md_core(kd, fd, ki)
kvm_t *kd;
int fd;
struct kinfo_proc *ki;
{
register struct rwindow *rw;
register int nsaved, cc, ssize;
register off_t off, s;
register u_long sp;
struct pcb pcb;
struct trapframe tf;
/*
* Before anything else read the trapframe. Synchronizing here
* is impossible if the process is running.
*/
cc = kvm_read(kd, (u_long)ki->kp_proc.p_md.md_tf,
/* XXX */
(void *)&tf, sizeof(tf));
if (cc < 0)
errx(1, "kvm_read: %s (reading kernel trapframe)",
kvm_geterr(kd));
if (cc != sizeof(tf))
errx(1, "cannot read kernel trapframe");
/*
* Write out the real trap frame.
*/
off = offsetof(struct user, u_md);
off += offsetof(struct md_coredump, md_tf);
if (lseek(fd, off, SEEK_SET) == -1)
err(1, "lseek");
(void)write(fd, &tf, sizeof(tf));
if (ki->kp_proc.p_md.md_fpstate != 0) {
/*
* If floating point state is present, write it out too.
* It comes right after the trapframe so we don't need to seek.
*/
struct fpstate fs;
cc = kvm_read(kd, (u_long)ki->kp_proc.p_md.md_fpstate,
(void *)&fs, sizeof(fs));
if (cc < 0)
errx(1, "kvm_read: %s (fpu state)", kvm_geterr(kd));
if (cc != sizeof(fs))
errx(1, "cannot read fpu state");
(void)write(fd, (char *)&fs, sizeof(fs));
}
/*
* Read pcb.
*/
if (lseek(fd, (off_t)offsetof(struct user, u_pcb), SEEK_SET) == -1)
err(1, "lseek");
cc = read(fd, (char *)&pcb, sizeof(pcb));
if (cc != sizeof(pcb)) {
if (cc < 0)
err(1, "read");
errx(1, "couldn't read pcb from core file");
}
/*
* Write any unsaved windows to the appropriate stack locations.
*/
nsaved = pcb.pcb_nsaved;
if (nsaved == 0)
return;
rw = &pcb.pcb_rw[0];
off = ctob(UPAGES + ki->kp_eproc.e_vm.vm_dsize);
ssize = ctob(ki->kp_eproc.e_vm.vm_ssize);
sp = tf.tf_out[6];
for (; --nsaved >= 0; ++rw) {
/*
* Copy register window into appropriate stack location.
*/
s = ssize - (USRSTACK - sp);
if (s < 0) {
if (s < -NBPG)
errx(1, "cannot copy pcb windows to stack");
/*
* It's possible to be missing the bottomost
* page because a stack page hasn't been allocated
* for the register save area. Shift over
* the stack segment by a page, and update
* the u-area to reflect the new stack size. YECH!
*/
shift_page(fd, off, ssize);
ssize += NBPG;
s += NBPG;
++ki->kp_eproc.e_vm.vm_ssize;
(void)lseek(fd,
(off_t)offsetof(struct user, u_kproc.kp_eproc.e_vm),
SEEK_SET);
(void)write(fd,
&ki->kp_eproc.e_vm, sizeof(ki->kp_eproc.e_vm));
}
if (lseek(fd, off + s, SEEK_SET) == -1)
errx(1, "cannot copy pcb windows to stack");
(void)write(fd, rw, sizeof(*rw));
sp = rw->rw_in[6];
}
}
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