2 * Copyright (c) 2011 NetApp, Inc.
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 NETAPP, INC ``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 NETAPP, INC 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
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/types.h>
33 #include <sys/socket.h>
34 #include <netinet/in.h>
46 #define BVM_DBG_PORT 0x224
48 static int listen_fd, conn_fd;
50 static struct sockaddr_in sin;
53 init_dbgport(int sport)
57 if ((listen_fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
62 sin.sin_len = sizeof(sin);
63 sin.sin_family = AF_INET;
64 sin.sin_addr.s_addr = htonl(INADDR_ANY);
65 sin.sin_port = htons(sport);
67 if (bind(listen_fd, (struct sockaddr *)&sin, sizeof(sin)) < 0) {
72 if (listen(listen_fd, 1) < 0) {
79 dbg_handler(struct vmctx *ctx, int vcpu, int in, int port, int bytes,
80 uint32_t *eax, void *arg)
83 int nwritten, nread, printonce;
92 printf("Waiting for connection from gdb\r\n");
95 conn_fd = accept(listen_fd, NULL, NULL);
97 fcntl(conn_fd, F_SETFL, O_NONBLOCK);
98 else if (errno != EINTR)
103 nread = read(conn_fd, &ch, 1);
104 if (nread == -1 && errno == EAGAIN)
115 nwritten = write(conn_fd, &ch, 1);
125 INOUT_PORT(dbg, BVM_DBG_PORT, IOPORT_F_INOUT, dbg_handler);