2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This software was developed by the Computer Systems Engineering group
6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
7 * contributed to Berkeley.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * @(#)md-sparc.c 8.1 (Berkeley) 6/6/93
39 * $DragonFly: src/usr.bin/gcore/md-sparc.c,v 1.5 2005/04/10 20:55:38 drhodus Exp $
42 #include <sys/param.h>
47 #include <sys/sysctl.h>
48 #include <machine/vmparam.h>
58 #define offsetof(s, f) ((int)&((s *)0)->f)
62 shift_page(int fd
, off_t off
, int ssize
)
66 (void)lseek(fd
, (off_t
)-NBPG
, SEEK_END
);
67 for (; ssize
> 0; ssize
-= NBPG
) {
68 (void)read(fd
, buffer
, NBPG
);
69 (void)write(fd
, buffer
, NBPG
);
70 (void)lseek(fd
, (off_t
)-2 * NBPG
, SEEK_CUR
);
75 * Fix up the core image for the sparc. We need to flush any register
76 * windows that are cached in the pcb out to the user stack.
77 * Also, we need to get the trap frame and possible floating point state
78 * from the top of the kernel stack and store it in the pcb.
81 md_core(kvm_t
*kd
, int fd
, struct kinfo_proc
*ki
)
84 int nsaved
, cc
, ssize
;
91 * Before anything else read the trapframe. Synchronizing here
92 * is impossible if the process is running.
94 cc
= kvm_read(kd
, (u_long
)ki
->kp_proc
.p_md
.md_tf
,
96 (void *)&tf
, sizeof(tf
));
98 errx(1, "kvm_read: %s (reading kernel trapframe)",
100 if (cc
!= sizeof(tf
))
101 errx(1, "cannot read kernel trapframe");
104 * Write out the real trap frame.
106 off
= offsetof(struct user
, u_md
);
107 off
+= offsetof(struct md_coredump
, md_tf
);
108 if (lseek(fd
, off
, SEEK_SET
) == -1)
110 (void)write(fd
, &tf
, sizeof(tf
));
112 if (ki
->kp_proc
.p_md
.md_fpstate
!= 0) {
114 * If floating point state is present, write it out too.
115 * It comes right after the trapframe so we don't need to seek.
118 cc
= kvm_read(kd
, (u_long
)ki
->kp_proc
.p_md
.md_fpstate
,
119 (void *)&fs
, sizeof(fs
));
121 errx(1, "kvm_read: %s (fpu state)", kvm_geterr(kd
));
122 if (cc
!= sizeof(fs
))
123 errx(1, "cannot read fpu state");
124 (void)write(fd
, (char *)&fs
, sizeof(fs
));
129 if (lseek(fd
, (off_t
)offsetof(struct user
, u_pcb
), SEEK_SET
) == -1)
131 cc
= read(fd
, (char *)&pcb
, sizeof(pcb
));
132 if (cc
!= sizeof(pcb
)) {
135 errx(1, "couldn't read pcb from core file");
139 * Write any unsaved windows to the appropriate stack locations.
141 nsaved
= pcb
.pcb_nsaved
;
146 off
= ctob(UPAGES
+ ki
->kp_eproc
.e_vm
.vm_dsize
);
147 ssize
= ctob(ki
->kp_eproc
.e_vm
.vm_ssize
);
149 for (; --nsaved
>= 0; ++rw
) {
151 * Copy register window into appropriate stack location.
153 s
= ssize
- (USRSTACK
- sp
);
156 errx(1, "cannot copy pcb windows to stack");
158 * It's possible to be missing the bottomost
159 * page because a stack page hasn't been allocated
160 * for the register save area. Shift over
161 * the stack segment by a page, and update
162 * the u-area to reflect the new stack size. YECH!
164 shift_page(fd
, off
, ssize
);
167 ++ki
->kp_eproc
.e_vm
.vm_ssize
;
169 (off_t
)offsetof(struct user
, u_kproc
.kp_eproc
.e_vm
),
172 &ki
->kp_eproc
.e_vm
, sizeof(ki
->kp_eproc
.e_vm
));
174 if (lseek(fd
, off
+ s
, SEEK_SET
) == -1)
175 errx(1, "cannot copy pcb windows to stack");
177 (void)write(fd
, rw
, sizeof(*rw
));