2 * Copyright (c) 1998 Michael Smith <msmith@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
32 #include <bootstrap.h>
35 * Concatenate the (argc) elements of (argv) into a single string, and return
39 unargv(int argc, char *argv[])
45 for (i = 0, hlong = 0; i < argc; i++)
46 hlong += strlen(argv[i]) + 2;
53 for (i = 0; i < argc; i++) {
63 * Get the length of a string in kernel space
66 strlenout(vm_offset_t src)
71 for (len = 0; ; len++) {
72 archsw.arch_copyout(src++, &c, 1);
80 * Make a duplicate copy of a string in kernel space
83 strdupout(vm_offset_t str)
87 result = malloc(strlenout(str) + 1);
88 for (cp = result; ;cp++) {
89 archsw.arch_copyout(str++, cp, 1);
96 /* Zero a region in kernel space. */
98 kern_bzero(vm_offset_t dest, size_t len)
103 bzero(buf, sizeof(buf));
106 chunk = min(sizeof(buf), resid);
107 archsw.arch_copyin(buf, dest, chunk);
114 * Read the specified part of a file to kernel space. Unlike regular
115 * pread, the file pointer is advanced to the end of the read data,
116 * and it just returns 0 if successful.
119 kern_pread(int fd, vm_offset_t dest, size_t len, off_t off)
123 if (lseek(fd, off, SEEK_SET) == -1) {
124 printf("\nlseek failed\n");
127 nread = archsw.arch_readin(fd, dest, len);
129 printf("\nreadin failed\n");
136 * Read the specified part of a file to a malloced buffer. The file
137 * pointer is advanced to the end of the read data.
140 alloc_pread(int fd, off_t off, size_t len)
147 printf("\nmalloc(%d) failed\n", (int)len);
150 if (lseek(fd, off, SEEK_SET) == -1) {
151 printf("\nlseek failed\n");
155 nread = read(fd, buf, len);
157 printf("\nread failed\n");
165 * Display a region in traditional hexdump format.
168 hexdump(caddr_t region, size_t len)
173 #define emit(fmt, args...) {sprintf(lbuf, fmt , ## args); pager_output(lbuf);}
176 for (line = region; line < (region + len); line += 16) {
177 emit("%08lx ", (long) line);
179 for (x = 0; x < 16; x++) {
180 if ((line + x) < (region + len)) {
181 emit("%02x ", *(u_int8_t *)(line + x));
189 for (x = 0; x < 16; x++) {
190 if ((line + x) < (region + len)) {
191 c = *(u_int8_t *)(line + x);
192 if ((c < ' ') || (c > '~')) /* !isprint(c) */
209 /* Call cleanup routines */
210 for (i = 0; devsw[i] != NULL; ++i)
211 if (devsw[i]->dv_cleanup != NULL)
212 (devsw[i]->dv_cleanup)();