187 lines
5.7 KiB
C
187 lines
5.7 KiB
C
|
/*-
|
||
|
* 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 <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)
|
||
|
err(1, "kvm_read: %s (reading kernel trapframe)",
|
||
|
kvm_geterr(kd));
|
||
|
if (cc != sizeof(tf))
|
||
|
err(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: %s", strerror(errno));
|
||
|
(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)
|
||
|
err(1, "kvm_read: %s (fpu state)", kvm_geterr(kd));
|
||
|
if (cc != sizeof(fs))
|
||
|
err(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: %s", strerror(errno));
|
||
|
cc = read(fd, (char *)&pcb, sizeof(pcb));
|
||
|
if (cc != sizeof(pcb)) {
|
||
|
if (cc < 0)
|
||
|
err(1, "read: %s", strerror(errno));
|
||
|
err(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)
|
||
|
err(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)
|
||
|
err(1, "cannot copy pcb windows to stack");
|
||
|
|
||
|
(void)write(fd, rw, sizeof(*rw));
|
||
|
sp = rw->rw_in[6];
|
||
|
}
|
||
|
}
|