Remove __P macros from src/usr.bin and src/usr.sbin.
[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
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38 *
39 * $DragonFly: src/usr.bin/gcore/md-sparc.c,v 1.3 2003/10/04 20:36:45 hmp 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>
46#include <sys/proc.h>
47#include <sys/user.h>
48#include <sys/sysctl.h>
49#include <machine/vmparam.h>
50
51#include <err.h>
52#include <kvm.h>
53#include <unistd.h>
54#include <stdio.h>
55#include <string.h>
56#include "extern.h"
57
58#ifndef offsetof
59#define offsetof(s, f) ((int)&((s *)0)->f)
60#endif
61
62static void
1d1731fa 63shift_page(register int fd, register off_t off, register int ssize)
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64{
65 char buffer[NBPG];
66
67 (void)lseek(fd, (off_t)-NBPG, SEEK_END);
68 for (; ssize > 0; ssize -= NBPG) {
69 (void)read(fd, buffer, NBPG);
70 (void)write(fd, buffer, NBPG);
71 (void)lseek(fd, (off_t)-2 * NBPG, SEEK_CUR);
72 }
73}
74
75/*
76 * Fix up the core image for the sparc. We need to flush any register
77 * windows that are cached in the pcb out to the user stack.
78 * Also, we need to get the trap frame and possible floating point state
79 * from the top of the kernel stack and store it in the pcb.
80 */
81void
1d1731fa 82md_core(kvm_t *kd, int fd, struct kinfo_proc *ki)
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83{
84 register struct rwindow *rw;
85 register int nsaved, cc, ssize;
86 register off_t off, s;
87 register u_long sp;
88 struct pcb pcb;
89 struct trapframe tf;
90
91 /*
92 * Before anything else read the trapframe. Synchronizing here
93 * is impossible if the process is running.
94 */
95 cc = kvm_read(kd, (u_long)ki->kp_proc.p_md.md_tf,
96 /* XXX */
97 (void *)&tf, sizeof(tf));
98 if (cc < 0)
99 errx(1, "kvm_read: %s (reading kernel trapframe)",
100 kvm_geterr(kd));
101 if (cc != sizeof(tf))
102 errx(1, "cannot read kernel trapframe");
103
104 /*
105 * Write out the real trap frame.
106 */
107 off = offsetof(struct user, u_md);
108 off += offsetof(struct md_coredump, md_tf);
109 if (lseek(fd, off, SEEK_SET) == -1)
110 err(1, "lseek");
111 (void)write(fd, &tf, sizeof(tf));
112
113 if (ki->kp_proc.p_md.md_fpstate != 0) {
114 /*
115 * If floating point state is present, write it out too.
116 * It comes right after the trapframe so we don't need to seek.
117 */
118 struct fpstate fs;
119 cc = kvm_read(kd, (u_long)ki->kp_proc.p_md.md_fpstate,
120 (void *)&fs, sizeof(fs));
121 if (cc < 0)
122 errx(1, "kvm_read: %s (fpu state)", kvm_geterr(kd));
123 if (cc != sizeof(fs))
124 errx(1, "cannot read fpu state");
125 (void)write(fd, (char *)&fs, sizeof(fs));
126 }
127 /*
128 * Read pcb.
129 */
130 if (lseek(fd, (off_t)offsetof(struct user, u_pcb), SEEK_SET) == -1)
131 err(1, "lseek");
132 cc = read(fd, (char *)&pcb, sizeof(pcb));
133 if (cc != sizeof(pcb)) {
134 if (cc < 0)
135 err(1, "read");
136 errx(1, "couldn't read pcb from core file");
137 }
138
139 /*
140 * Write any unsaved windows to the appropriate stack locations.
141 */
142 nsaved = pcb.pcb_nsaved;
143 if (nsaved == 0)
144 return;
145
146 rw = &pcb.pcb_rw[0];
147 off = ctob(UPAGES + ki->kp_eproc.e_vm.vm_dsize);
148 ssize = ctob(ki->kp_eproc.e_vm.vm_ssize);
149 sp = tf.tf_out[6];
150 for (; --nsaved >= 0; ++rw) {
151 /*
152 * Copy register window into appropriate stack location.
153 */
154 s = ssize - (USRSTACK - sp);
155 if (s < 0) {
156 if (s < -NBPG)
157 errx(1, "cannot copy pcb windows to stack");
158 /*
159 * It's possible to be missing the bottomost
160 * page because a stack page hasn't been allocated
161 * for the register save area. Shift over
162 * the stack segment by a page, and update
163 * the u-area to reflect the new stack size. YECH!
164 */
165 shift_page(fd, off, ssize);
166 ssize += NBPG;
167 s += NBPG;
168 ++ki->kp_eproc.e_vm.vm_ssize;
169 (void)lseek(fd,
170 (off_t)offsetof(struct user, u_kproc.kp_eproc.e_vm),
171 SEEK_SET);
172 (void)write(fd,
173 &ki->kp_eproc.e_vm, sizeof(ki->kp_eproc.e_vm));
174 }
175 if (lseek(fd, off + s, SEEK_SET) == -1)
176 errx(1, "cannot copy pcb windows to stack");
177
178 (void)write(fd, rw, sizeof(*rw));
179 sp = rw->rw_in[6];
180 }
181}