Do some fairly major include file cleanups to further separate kernelland
[dragonfly.git] / usr.bin / gcore / md-sparc.c
CommitLineData
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1/*-
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
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.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
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.
24 *
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
35 * SUCH DAMAGE.
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36 *
37 * @(#)md-sparc.c 8.1 (Berkeley) 6/6/93
1d1731fa 38 *
05220613 39 * $DragonFly: src/usr.bin/gcore/md-sparc.c,v 1.4 2003/11/21 22:46:14 dillon Exp $
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40 */
41
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42#include <sys/param.h>
43#include <sys/time.h>
44#include <sys/file.h>
45#include <sys/stat.h>
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46#include <sys/user.h>
47#include <sys/sysctl.h>
48#include <machine/vmparam.h>
49
50#include <err.h>
51#include <kvm.h>
52#include <unistd.h>
53#include <stdio.h>
54#include <string.h>
55#include "extern.h"
56
57#ifndef offsetof
58#define offsetof(s, f) ((int)&((s *)0)->f)
59#endif
60
61static void
1d1731fa 62shift_page(register int fd, register off_t off, register int ssize)
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63{
64 char buffer[NBPG];
65
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);
71 }
72}
73
74/*
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.
79 */
80void
1d1731fa 81md_core(kvm_t *kd, int fd, struct kinfo_proc *ki)
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82{
83 register struct rwindow *rw;
84 register int nsaved, cc, ssize;
85 register off_t off, s;
86 register u_long sp;
87 struct pcb pcb;
88 struct trapframe tf;
89
90 /*
91 * Before anything else read the trapframe. Synchronizing here
92 * is impossible if the process is running.
93 */
94 cc = kvm_read(kd, (u_long)ki->kp_proc.p_md.md_tf,
95 /* XXX */
96 (void *)&tf, sizeof(tf));
97 if (cc < 0)
98 errx(1, "kvm_read: %s (reading kernel trapframe)",
99 kvm_geterr(kd));
100 if (cc != sizeof(tf))
101 errx(1, "cannot read kernel trapframe");
102
103 /*
104 * Write out the real trap frame.
105 */
106 off = offsetof(struct user, u_md);
107 off += offsetof(struct md_coredump, md_tf);
108 if (lseek(fd, off, SEEK_SET) == -1)
109 err(1, "lseek");
110 (void)write(fd, &tf, sizeof(tf));
111
112 if (ki->kp_proc.p_md.md_fpstate != 0) {
113 /*
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.
116 */
117 struct fpstate fs;
118 cc = kvm_read(kd, (u_long)ki->kp_proc.p_md.md_fpstate,
119 (void *)&fs, sizeof(fs));
120 if (cc < 0)
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));
125 }
126 /*
127 * Read pcb.
128 */
129 if (lseek(fd, (off_t)offsetof(struct user, u_pcb), SEEK_SET) == -1)
130 err(1, "lseek");
131 cc = read(fd, (char *)&pcb, sizeof(pcb));
132 if (cc != sizeof(pcb)) {
133 if (cc < 0)
134 err(1, "read");
135 errx(1, "couldn't read pcb from core file");
136 }
137
138 /*
139 * Write any unsaved windows to the appropriate stack locations.
140 */
141 nsaved = pcb.pcb_nsaved;
142 if (nsaved == 0)
143 return;
144
145 rw = &pcb.pcb_rw[0];
146 off = ctob(UPAGES + ki->kp_eproc.e_vm.vm_dsize);
147 ssize = ctob(ki->kp_eproc.e_vm.vm_ssize);
148 sp = tf.tf_out[6];
149 for (; --nsaved >= 0; ++rw) {
150 /*
151 * Copy register window into appropriate stack location.
152 */
153 s = ssize - (USRSTACK - sp);
154 if (s < 0) {
155 if (s < -NBPG)
156 errx(1, "cannot copy pcb windows to stack");
157 /*
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!
163 */
164 shift_page(fd, off, ssize);
165 ssize += NBPG;
166 s += NBPG;
167 ++ki->kp_eproc.e_vm.vm_ssize;
168 (void)lseek(fd,
169 (off_t)offsetof(struct user, u_kproc.kp_eproc.e_vm),
170 SEEK_SET);
171 (void)write(fd,
172 &ki->kp_eproc.e_vm, sizeof(ki->kp_eproc.e_vm));
173 }
174 if (lseek(fd, off + s, SEEK_SET) == -1)
175 errx(1, "cannot copy pcb windows to stack");
176
177 (void)write(fd, rw, sizeof(*rw));
178 sp = rw->rw_in[6];
179 }
180}