/* Remote utility routines for the remote server for GDB.
|
/* Remote utility routines for the remote server for GDB.
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Copyright (C) 1986, 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
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Copyright (C) 1986, 1989, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
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2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
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2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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|
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This file is part of GDB.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(at your option) any later version.
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|
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This program is distributed in the hope that it will be useful,
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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|
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#include "server.h"
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#include "server.h"
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#include "terminal.h"
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#include "terminal.h"
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#include <stdio.h>
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#include <stdio.h>
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#include <string.h>
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#include <string.h>
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#if HAVE_SYS_IOCTL_H
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#if HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#include <sys/ioctl.h>
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#endif
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#endif
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#if HAVE_SYS_FILE_H
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#if HAVE_SYS_FILE_H
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#include <sys/file.h>
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#include <sys/file.h>
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#endif
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#endif
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#if HAVE_NETINET_IN_H
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#if HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#include <netinet/in.h>
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#endif
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#endif
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#if HAVE_SYS_SOCKET_H
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#if HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#include <sys/socket.h>
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#endif
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#endif
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#if HAVE_NETDB_H
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#if HAVE_NETDB_H
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#include <netdb.h>
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#include <netdb.h>
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#endif
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#endif
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#if HAVE_NETINET_TCP_H
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#if HAVE_NETINET_TCP_H
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#include <netinet/tcp.h>
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#include <netinet/tcp.h>
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#endif
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#endif
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#if HAVE_SYS_IOCTL_H
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#if HAVE_SYS_IOCTL_H
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#include <sys/ioctl.h>
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#include <sys/ioctl.h>
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#endif
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#endif
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#if HAVE_SIGNAL_H
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#if HAVE_SIGNAL_H
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#include <signal.h>
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#include <signal.h>
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#endif
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#endif
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#if HAVE_FCNTL_H
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#if HAVE_FCNTL_H
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#include <fcntl.h>
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#include <fcntl.h>
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#endif
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#endif
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#include <sys/time.h>
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#include <sys/time.h>
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#if HAVE_UNISTD_H
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#if HAVE_UNISTD_H
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#include <unistd.h>
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#include <unistd.h>
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#endif
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#endif
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#if HAVE_ARPA_INET_H
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#if HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#include <arpa/inet.h>
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#endif
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#endif
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#include <sys/stat.h>
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#include <sys/stat.h>
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#if HAVE_ERRNO_H
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#if HAVE_ERRNO_H
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#include <errno.h>
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#include <errno.h>
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#endif
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#endif
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#if USE_WIN32API
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#if USE_WIN32API
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#include <winsock.h>
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#include <winsock.h>
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#endif
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#endif
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#ifndef HAVE_SOCKLEN_T
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#ifndef HAVE_SOCKLEN_T
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typedef int socklen_t;
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typedef int socklen_t;
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#endif
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#endif
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#if USE_WIN32API
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#if USE_WIN32API
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# define INVALID_DESCRIPTOR INVALID_SOCKET
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# define INVALID_DESCRIPTOR INVALID_SOCKET
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#else
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#else
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# define INVALID_DESCRIPTOR -1
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# define INVALID_DESCRIPTOR -1
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#endif
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#endif
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/* A cache entry for a successfully looked-up symbol. */
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/* A cache entry for a successfully looked-up symbol. */
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struct sym_cache
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struct sym_cache
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{
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{
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const char *name;
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const char *name;
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CORE_ADDR addr;
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CORE_ADDR addr;
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struct sym_cache *next;
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struct sym_cache *next;
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};
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};
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/* The symbol cache. */
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/* The symbol cache. */
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static struct sym_cache *symbol_cache;
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static struct sym_cache *symbol_cache;
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|
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/* If this flag has been set, assume cache misses are
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/* If this flag has been set, assume cache misses are
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failures. */
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failures. */
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int all_symbols_looked_up;
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int all_symbols_looked_up;
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int remote_debug = 0;
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int remote_debug = 0;
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struct ui_file *gdb_stdlog;
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struct ui_file *gdb_stdlog;
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static int remote_desc = INVALID_DESCRIPTOR;
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static int remote_desc = INVALID_DESCRIPTOR;
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/* FIXME headerize? */
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/* FIXME headerize? */
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extern int using_threads;
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extern int using_threads;
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extern int debug_threads;
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extern int debug_threads;
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#ifdef USE_WIN32API
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#ifdef USE_WIN32API
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# define read(fd, buf, len) recv (fd, (char *) buf, len, 0)
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# define read(fd, buf, len) recv (fd, (char *) buf, len, 0)
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# define write(fd, buf, len) send (fd, (char *) buf, len, 0)
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# define write(fd, buf, len) send (fd, (char *) buf, len, 0)
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#endif
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#endif
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/* Open a connection to a remote debugger.
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/* Open a connection to a remote debugger.
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NAME is the filename used for communication. */
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NAME is the filename used for communication. */
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void
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void
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remote_open (char *name)
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remote_open (char *name)
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{
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{
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#if defined(F_SETFL) && defined (FASYNC)
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#if defined(F_SETFL) && defined (FASYNC)
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int save_fcntl_flags;
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int save_fcntl_flags;
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#endif
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#endif
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char *port_str;
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char *port_str;
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port_str = strchr (name, ':');
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port_str = strchr (name, ':');
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if (port_str == NULL)
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if (port_str == NULL)
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{
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{
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#ifdef USE_WIN32API
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#ifdef USE_WIN32API
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error ("Only <host>:<port> is supported on this platform.");
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error ("Only <host>:<port> is supported on this platform.");
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#else
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#else
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struct stat statbuf;
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struct stat statbuf;
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if (stat (name, &statbuf) == 0
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if (stat (name, &statbuf) == 0
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&& (S_ISCHR (statbuf.st_mode) || S_ISFIFO (statbuf.st_mode)))
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&& (S_ISCHR (statbuf.st_mode) || S_ISFIFO (statbuf.st_mode)))
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remote_desc = open (name, O_RDWR);
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remote_desc = open (name, O_RDWR);
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else
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else
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{
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{
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errno = EINVAL;
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errno = EINVAL;
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remote_desc = -1;
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remote_desc = -1;
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}
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}
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if (remote_desc < 0)
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if (remote_desc < 0)
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perror_with_name ("Could not open remote device");
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perror_with_name ("Could not open remote device");
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#ifdef HAVE_TERMIOS
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#ifdef HAVE_TERMIOS
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{
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{
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struct termios termios;
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struct termios termios;
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tcgetattr (remote_desc, &termios);
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tcgetattr (remote_desc, &termios);
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|
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termios.c_iflag = 0;
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termios.c_iflag = 0;
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termios.c_oflag = 0;
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termios.c_oflag = 0;
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termios.c_lflag = 0;
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termios.c_lflag = 0;
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termios.c_cflag &= ~(CSIZE | PARENB);
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termios.c_cflag &= ~(CSIZE | PARENB);
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termios.c_cflag |= CLOCAL | CS8;
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termios.c_cflag |= CLOCAL | CS8;
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termios.c_cc[VMIN] = 1;
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termios.c_cc[VMIN] = 1;
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termios.c_cc[VTIME] = 0;
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termios.c_cc[VTIME] = 0;
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|
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tcsetattr (remote_desc, TCSANOW, &termios);
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tcsetattr (remote_desc, TCSANOW, &termios);
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}
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}
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#endif
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#endif
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|
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#ifdef HAVE_TERMIO
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#ifdef HAVE_TERMIO
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{
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{
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struct termio termio;
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struct termio termio;
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ioctl (remote_desc, TCGETA, &termio);
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ioctl (remote_desc, TCGETA, &termio);
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|
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termio.c_iflag = 0;
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termio.c_iflag = 0;
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termio.c_oflag = 0;
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termio.c_oflag = 0;
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termio.c_lflag = 0;
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termio.c_lflag = 0;
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termio.c_cflag &= ~(CSIZE | PARENB);
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termio.c_cflag &= ~(CSIZE | PARENB);
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termio.c_cflag |= CLOCAL | CS8;
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termio.c_cflag |= CLOCAL | CS8;
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termio.c_cc[VMIN] = 1;
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termio.c_cc[VMIN] = 1;
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termio.c_cc[VTIME] = 0;
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termio.c_cc[VTIME] = 0;
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|
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ioctl (remote_desc, TCSETA, &termio);
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ioctl (remote_desc, TCSETA, &termio);
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}
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}
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#endif
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#endif
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|
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#ifdef HAVE_SGTTY
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#ifdef HAVE_SGTTY
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{
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{
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struct sgttyb sg;
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struct sgttyb sg;
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|
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ioctl (remote_desc, TIOCGETP, &sg);
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ioctl (remote_desc, TIOCGETP, &sg);
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sg.sg_flags = RAW;
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sg.sg_flags = RAW;
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ioctl (remote_desc, TIOCSETP, &sg);
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ioctl (remote_desc, TIOCSETP, &sg);
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}
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}
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#endif
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#endif
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|
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fprintf (stderr, "Remote debugging using %s\n", name);
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fprintf (stderr, "Remote debugging using %s\n", name);
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#endif /* USE_WIN32API */
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#endif /* USE_WIN32API */
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}
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}
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else
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else
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{
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{
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#ifdef USE_WIN32API
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#ifdef USE_WIN32API
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static int winsock_initialized;
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static int winsock_initialized;
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#endif
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#endif
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int port;
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int port;
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struct sockaddr_in sockaddr;
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struct sockaddr_in sockaddr;
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socklen_t tmp;
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socklen_t tmp;
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int tmp_desc;
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int tmp_desc;
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char *port_end;
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char *port_end;
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|
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port = strtoul (port_str + 1, &port_end, 10);
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port = strtoul (port_str + 1, &port_end, 10);
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if (port_str[1] == '\0' || *port_end != '\0')
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if (port_str[1] == '\0' || *port_end != '\0')
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fatal ("Bad port argument: %s", name);
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fatal ("Bad port argument: %s", name);
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|
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#ifdef USE_WIN32API
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#ifdef USE_WIN32API
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if (!winsock_initialized)
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if (!winsock_initialized)
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{
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{
|
WSADATA wsad;
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WSADATA wsad;
|
|
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WSAStartup (MAKEWORD (1, 0), &wsad);
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WSAStartup (MAKEWORD (1, 0), &wsad);
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winsock_initialized = 1;
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winsock_initialized = 1;
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}
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}
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#endif
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#endif
|
|
|
tmp_desc = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
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tmp_desc = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP);
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if (tmp_desc < 0)
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if (tmp_desc < 0)
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perror_with_name ("Can't open socket");
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perror_with_name ("Can't open socket");
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|
|
/* Allow rapid reuse of this port. */
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/* Allow rapid reuse of this port. */
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tmp = 1;
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tmp = 1;
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setsockopt (tmp_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp,
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setsockopt (tmp_desc, SOL_SOCKET, SO_REUSEADDR, (char *) &tmp,
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sizeof (tmp));
|
sizeof (tmp));
|
|
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sockaddr.sin_family = PF_INET;
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sockaddr.sin_family = PF_INET;
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sockaddr.sin_port = htons (port);
|
sockaddr.sin_port = htons (port);
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sockaddr.sin_addr.s_addr = INADDR_ANY;
|
sockaddr.sin_addr.s_addr = INADDR_ANY;
|
|
|
if (bind (tmp_desc, (struct sockaddr *) &sockaddr, sizeof (sockaddr))
|
if (bind (tmp_desc, (struct sockaddr *) &sockaddr, sizeof (sockaddr))
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|| listen (tmp_desc, 1))
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|| listen (tmp_desc, 1))
|
perror_with_name ("Can't bind address");
|
perror_with_name ("Can't bind address");
|
|
|
/* If port is zero, a random port will be selected, and the
|
/* If port is zero, a random port will be selected, and the
|
fprintf below needs to know what port was selected. */
|
fprintf below needs to know what port was selected. */
|
if (port == 0)
|
if (port == 0)
|
{
|
{
|
socklen_t len = sizeof (sockaddr);
|
socklen_t len = sizeof (sockaddr);
|
if (getsockname (tmp_desc, (struct sockaddr *) &sockaddr, &len) < 0
|
if (getsockname (tmp_desc, (struct sockaddr *) &sockaddr, &len) < 0
|
|| len < sizeof (sockaddr))
|
|| len < sizeof (sockaddr))
|
perror_with_name ("Can't determine port");
|
perror_with_name ("Can't determine port");
|
port = ntohs (sockaddr.sin_port);
|
port = ntohs (sockaddr.sin_port);
|
}
|
}
|
|
|
fprintf (stderr, "Listening on port %d\n", port);
|
fprintf (stderr, "Listening on port %d\n", port);
|
fflush (stderr);
|
fflush (stderr);
|
|
|
tmp = sizeof (sockaddr);
|
tmp = sizeof (sockaddr);
|
remote_desc = accept (tmp_desc, (struct sockaddr *) &sockaddr, &tmp);
|
remote_desc = accept (tmp_desc, (struct sockaddr *) &sockaddr, &tmp);
|
if (remote_desc == -1)
|
if (remote_desc == -1)
|
perror_with_name ("Accept failed");
|
perror_with_name ("Accept failed");
|
|
|
/* Enable TCP keep alive process. */
|
/* Enable TCP keep alive process. */
|
tmp = 1;
|
tmp = 1;
|
setsockopt (remote_desc, SOL_SOCKET, SO_KEEPALIVE,
|
setsockopt (remote_desc, SOL_SOCKET, SO_KEEPALIVE,
|
(char *) &tmp, sizeof (tmp));
|
(char *) &tmp, sizeof (tmp));
|
|
|
/* Tell TCP not to delay small packets. This greatly speeds up
|
/* Tell TCP not to delay small packets. This greatly speeds up
|
interactive response. */
|
interactive response. */
|
tmp = 1;
|
tmp = 1;
|
setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY,
|
setsockopt (remote_desc, IPPROTO_TCP, TCP_NODELAY,
|
(char *) &tmp, sizeof (tmp));
|
(char *) &tmp, sizeof (tmp));
|
|
|
|
|
#ifndef USE_WIN32API
|
#ifndef USE_WIN32API
|
close (tmp_desc); /* No longer need this */
|
close (tmp_desc); /* No longer need this */
|
|
|
signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply
|
signal (SIGPIPE, SIG_IGN); /* If we don't do this, then gdbserver simply
|
exits when the remote side dies. */
|
exits when the remote side dies. */
|
#else
|
#else
|
closesocket (tmp_desc); /* No longer need this */
|
closesocket (tmp_desc); /* No longer need this */
|
#endif
|
#endif
|
|
|
/* Convert IP address to string. */
|
/* Convert IP address to string. */
|
fprintf (stderr, "Remote debugging from host %s\n",
|
fprintf (stderr, "Remote debugging from host %s\n",
|
inet_ntoa (sockaddr.sin_addr));
|
inet_ntoa (sockaddr.sin_addr));
|
}
|
}
|
|
|
#if defined(F_SETFL) && defined (FASYNC)
|
#if defined(F_SETFL) && defined (FASYNC)
|
save_fcntl_flags = fcntl (remote_desc, F_GETFL, 0);
|
save_fcntl_flags = fcntl (remote_desc, F_GETFL, 0);
|
fcntl (remote_desc, F_SETFL, save_fcntl_flags | FASYNC);
|
fcntl (remote_desc, F_SETFL, save_fcntl_flags | FASYNC);
|
#if defined (F_SETOWN)
|
#if defined (F_SETOWN)
|
fcntl (remote_desc, F_SETOWN, getpid ());
|
fcntl (remote_desc, F_SETOWN, getpid ());
|
#endif
|
#endif
|
#endif
|
#endif
|
}
|
}
|
|
|
void
|
void
|
remote_close (void)
|
remote_close (void)
|
{
|
{
|
#ifdef USE_WIN32API
|
#ifdef USE_WIN32API
|
closesocket (remote_desc);
|
closesocket (remote_desc);
|
#else
|
#else
|
close (remote_desc);
|
close (remote_desc);
|
#endif
|
#endif
|
}
|
}
|
|
|
/* Convert hex digit A to a number. */
|
/* Convert hex digit A to a number. */
|
|
|
static int
|
static int
|
fromhex (int a)
|
fromhex (int a)
|
{
|
{
|
if (a >= '0' && a <= '9')
|
if (a >= '0' && a <= '9')
|
return a - '0';
|
return a - '0';
|
else if (a >= 'a' && a <= 'f')
|
else if (a >= 'a' && a <= 'f')
|
return a - 'a' + 10;
|
return a - 'a' + 10;
|
else
|
else
|
error ("Reply contains invalid hex digit");
|
error ("Reply contains invalid hex digit");
|
return 0;
|
return 0;
|
}
|
}
|
|
|
int
|
int
|
unhexify (char *bin, const char *hex, int count)
|
unhexify (char *bin, const char *hex, int count)
|
{
|
{
|
int i;
|
int i;
|
|
|
for (i = 0; i < count; i++)
|
for (i = 0; i < count; i++)
|
{
|
{
|
if (hex[0] == 0 || hex[1] == 0)
|
if (hex[0] == 0 || hex[1] == 0)
|
{
|
{
|
/* Hex string is short, or of uneven length.
|
/* Hex string is short, or of uneven length.
|
Return the count that has been converted so far. */
|
Return the count that has been converted so far. */
|
return i;
|
return i;
|
}
|
}
|
*bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]);
|
*bin++ = fromhex (hex[0]) * 16 + fromhex (hex[1]);
|
hex += 2;
|
hex += 2;
|
}
|
}
|
return i;
|
return i;
|
}
|
}
|
|
|
void
|
void
|
decode_address (CORE_ADDR *addrp, const char *start, int len)
|
decode_address (CORE_ADDR *addrp, const char *start, int len)
|
{
|
{
|
CORE_ADDR addr;
|
CORE_ADDR addr;
|
char ch;
|
char ch;
|
int i;
|
int i;
|
|
|
addr = 0;
|
addr = 0;
|
for (i = 0; i < len; i++)
|
for (i = 0; i < len; i++)
|
{
|
{
|
ch = start[i];
|
ch = start[i];
|
addr = addr << 4;
|
addr = addr << 4;
|
addr = addr | (fromhex (ch) & 0x0f);
|
addr = addr | (fromhex (ch) & 0x0f);
|
}
|
}
|
*addrp = addr;
|
*addrp = addr;
|
}
|
}
|
|
|
const char *
|
const char *
|
decode_address_to_semicolon (CORE_ADDR *addrp, const char *start)
|
decode_address_to_semicolon (CORE_ADDR *addrp, const char *start)
|
{
|
{
|
const char *end;
|
const char *end;
|
|
|
end = start;
|
end = start;
|
while (*end != '\0' && *end != ';')
|
while (*end != '\0' && *end != ';')
|
end++;
|
end++;
|
|
|
decode_address (addrp, start, end - start);
|
decode_address (addrp, start, end - start);
|
|
|
if (*end == ';')
|
if (*end == ';')
|
end++;
|
end++;
|
return end;
|
return end;
|
}
|
}
|
|
|
/* Convert number NIB to a hex digit. */
|
/* Convert number NIB to a hex digit. */
|
|
|
static int
|
static int
|
tohex (int nib)
|
tohex (int nib)
|
{
|
{
|
if (nib < 10)
|
if (nib < 10)
|
return '0' + nib;
|
return '0' + nib;
|
else
|
else
|
return 'a' + nib - 10;
|
return 'a' + nib - 10;
|
}
|
}
|
|
|
int
|
int
|
hexify (char *hex, const char *bin, int count)
|
hexify (char *hex, const char *bin, int count)
|
{
|
{
|
int i;
|
int i;
|
|
|
/* May use a length, or a nul-terminated string as input. */
|
/* May use a length, or a nul-terminated string as input. */
|
if (count == 0)
|
if (count == 0)
|
count = strlen (bin);
|
count = strlen (bin);
|
|
|
for (i = 0; i < count; i++)
|
for (i = 0; i < count; i++)
|
{
|
{
|
*hex++ = tohex ((*bin >> 4) & 0xf);
|
*hex++ = tohex ((*bin >> 4) & 0xf);
|
*hex++ = tohex (*bin++ & 0xf);
|
*hex++ = tohex (*bin++ & 0xf);
|
}
|
}
|
*hex = 0;
|
*hex = 0;
|
return i;
|
return i;
|
}
|
}
|
|
|
/* Convert BUFFER, binary data at least LEN bytes long, into escaped
|
/* Convert BUFFER, binary data at least LEN bytes long, into escaped
|
binary data in OUT_BUF. Set *OUT_LEN to the length of the data
|
binary data in OUT_BUF. Set *OUT_LEN to the length of the data
|
encoded in OUT_BUF, and return the number of bytes in OUT_BUF
|
encoded in OUT_BUF, and return the number of bytes in OUT_BUF
|
(which may be more than *OUT_LEN due to escape characters). The
|
(which may be more than *OUT_LEN due to escape characters). The
|
total number of bytes in the output buffer will be at most
|
total number of bytes in the output buffer will be at most
|
OUT_MAXLEN. */
|
OUT_MAXLEN. */
|
|
|
int
|
int
|
remote_escape_output (const gdb_byte *buffer, int len,
|
remote_escape_output (const gdb_byte *buffer, int len,
|
gdb_byte *out_buf, int *out_len,
|
gdb_byte *out_buf, int *out_len,
|
int out_maxlen)
|
int out_maxlen)
|
{
|
{
|
int input_index, output_index;
|
int input_index, output_index;
|
|
|
output_index = 0;
|
output_index = 0;
|
for (input_index = 0; input_index < len; input_index++)
|
for (input_index = 0; input_index < len; input_index++)
|
{
|
{
|
gdb_byte b = buffer[input_index];
|
gdb_byte b = buffer[input_index];
|
|
|
if (b == '$' || b == '#' || b == '}' || b == '*')
|
if (b == '$' || b == '#' || b == '}' || b == '*')
|
{
|
{
|
/* These must be escaped. */
|
/* These must be escaped. */
|
if (output_index + 2 > out_maxlen)
|
if (output_index + 2 > out_maxlen)
|
break;
|
break;
|
out_buf[output_index++] = '}';
|
out_buf[output_index++] = '}';
|
out_buf[output_index++] = b ^ 0x20;
|
out_buf[output_index++] = b ^ 0x20;
|
}
|
}
|
else
|
else
|
{
|
{
|
if (output_index + 1 > out_maxlen)
|
if (output_index + 1 > out_maxlen)
|
break;
|
break;
|
out_buf[output_index++] = b;
|
out_buf[output_index++] = b;
|
}
|
}
|
}
|
}
|
|
|
*out_len = input_index;
|
*out_len = input_index;
|
return output_index;
|
return output_index;
|
}
|
}
|
|
|
/* Convert BUFFER, escaped data LEN bytes long, into binary data
|
/* Convert BUFFER, escaped data LEN bytes long, into binary data
|
in OUT_BUF. Return the number of bytes written to OUT_BUF.
|
in OUT_BUF. Return the number of bytes written to OUT_BUF.
|
Raise an error if the total number of bytes exceeds OUT_MAXLEN.
|
Raise an error if the total number of bytes exceeds OUT_MAXLEN.
|
|
|
This function reverses remote_escape_output. It allows more
|
This function reverses remote_escape_output. It allows more
|
escaped characters than that function does, in particular because
|
escaped characters than that function does, in particular because
|
'*' must be escaped to avoid the run-length encoding processing
|
'*' must be escaped to avoid the run-length encoding processing
|
in reading packets. */
|
in reading packets. */
|
|
|
static int
|
static int
|
remote_unescape_input (const gdb_byte *buffer, int len,
|
remote_unescape_input (const gdb_byte *buffer, int len,
|
gdb_byte *out_buf, int out_maxlen)
|
gdb_byte *out_buf, int out_maxlen)
|
{
|
{
|
int input_index, output_index;
|
int input_index, output_index;
|
int escaped;
|
int escaped;
|
|
|
output_index = 0;
|
output_index = 0;
|
escaped = 0;
|
escaped = 0;
|
for (input_index = 0; input_index < len; input_index++)
|
for (input_index = 0; input_index < len; input_index++)
|
{
|
{
|
gdb_byte b = buffer[input_index];
|
gdb_byte b = buffer[input_index];
|
|
|
if (output_index + 1 > out_maxlen)
|
if (output_index + 1 > out_maxlen)
|
error ("Received too much data from the target.");
|
error ("Received too much data from the target.");
|
|
|
if (escaped)
|
if (escaped)
|
{
|
{
|
out_buf[output_index++] = b ^ 0x20;
|
out_buf[output_index++] = b ^ 0x20;
|
escaped = 0;
|
escaped = 0;
|
}
|
}
|
else if (b == '}')
|
else if (b == '}')
|
escaped = 1;
|
escaped = 1;
|
else
|
else
|
out_buf[output_index++] = b;
|
out_buf[output_index++] = b;
|
}
|
}
|
|
|
if (escaped)
|
if (escaped)
|
error ("Unmatched escape character in target response.");
|
error ("Unmatched escape character in target response.");
|
|
|
return output_index;
|
return output_index;
|
}
|
}
|
|
|
/* Look for a sequence of characters which can be run-length encoded.
|
/* Look for a sequence of characters which can be run-length encoded.
|
If there are any, update *CSUM and *P. Otherwise, output the
|
If there are any, update *CSUM and *P. Otherwise, output the
|
single character. Return the number of characters consumed. */
|
single character. Return the number of characters consumed. */
|
|
|
static int
|
static int
|
try_rle (char *buf, int remaining, unsigned char *csum, char **p)
|
try_rle (char *buf, int remaining, unsigned char *csum, char **p)
|
{
|
{
|
int n;
|
int n;
|
|
|
/* Always output the character. */
|
/* Always output the character. */
|
*csum += buf[0];
|
*csum += buf[0];
|
*(*p)++ = buf[0];
|
*(*p)++ = buf[0];
|
|
|
/* Don't go past '~'. */
|
/* Don't go past '~'. */
|
if (remaining > 97)
|
if (remaining > 97)
|
remaining = 97;
|
remaining = 97;
|
|
|
for (n = 1; n < remaining; n++)
|
for (n = 1; n < remaining; n++)
|
if (buf[n] != buf[0])
|
if (buf[n] != buf[0])
|
break;
|
break;
|
|
|
/* N is the index of the first character not the same as buf[0].
|
/* N is the index of the first character not the same as buf[0].
|
buf[0] is counted twice, so by decrementing N, we get the number
|
buf[0] is counted twice, so by decrementing N, we get the number
|
of characters the RLE sequence will replace. */
|
of characters the RLE sequence will replace. */
|
n--;
|
n--;
|
|
|
if (n < 3)
|
if (n < 3)
|
return 1;
|
return 1;
|
|
|
/* Skip the frame characters. The manual says to skip '+' and '-'
|
/* Skip the frame characters. The manual says to skip '+' and '-'
|
also, but there's no reason to. Unfortunately these two unusable
|
also, but there's no reason to. Unfortunately these two unusable
|
characters double the encoded length of a four byte zero
|
characters double the encoded length of a four byte zero
|
value. */
|
value. */
|
while (n + 29 == '$' || n + 29 == '#')
|
while (n + 29 == '$' || n + 29 == '#')
|
n--;
|
n--;
|
|
|
*csum += '*';
|
*csum += '*';
|
*(*p)++ = '*';
|
*(*p)++ = '*';
|
*csum += n + 29;
|
*csum += n + 29;
|
*(*p)++ = n + 29;
|
*(*p)++ = n + 29;
|
|
|
return n + 1;
|
return n + 1;
|
}
|
}
|
|
|
/* Send a packet to the remote machine, with error checking.
|
/* Send a packet to the remote machine, with error checking.
|
The data of the packet is in BUF, and the length of the
|
The data of the packet is in BUF, and the length of the
|
packet is in CNT. Returns >= 0 on success, -1 otherwise. */
|
packet is in CNT. Returns >= 0 on success, -1 otherwise. */
|
|
|
int
|
int
|
putpkt_binary (char *buf, int cnt)
|
putpkt_binary (char *buf, int cnt)
|
{
|
{
|
int i;
|
int i;
|
unsigned char csum = 0;
|
unsigned char csum = 0;
|
char *buf2;
|
char *buf2;
|
char buf3[1];
|
char buf3[1];
|
char *p;
|
char *p;
|
|
|
buf2 = malloc (PBUFSIZ);
|
buf2 = malloc (PBUFSIZ);
|
|
|
/* Copy the packet into buffer BUF2, encapsulating it
|
/* Copy the packet into buffer BUF2, encapsulating it
|
and giving it a checksum. */
|
and giving it a checksum. */
|
|
|
p = buf2;
|
p = buf2;
|
*p++ = '$';
|
*p++ = '$';
|
|
|
for (i = 0; i < cnt;)
|
for (i = 0; i < cnt;)
|
i += try_rle (buf + i, cnt - i, &csum, &p);
|
i += try_rle (buf + i, cnt - i, &csum, &p);
|
|
|
*p++ = '#';
|
*p++ = '#';
|
*p++ = tohex ((csum >> 4) & 0xf);
|
*p++ = tohex ((csum >> 4) & 0xf);
|
*p++ = tohex (csum & 0xf);
|
*p++ = tohex (csum & 0xf);
|
|
|
*p = '\0';
|
*p = '\0';
|
|
|
/* Send it over and over until we get a positive ack. */
|
/* Send it over and over until we get a positive ack. */
|
|
|
do
|
do
|
{
|
{
|
int cc;
|
int cc;
|
|
|
if (write (remote_desc, buf2, p - buf2) != p - buf2)
|
if (write (remote_desc, buf2, p - buf2) != p - buf2)
|
{
|
{
|
perror ("putpkt(write)");
|
perror ("putpkt(write)");
|
free (buf2);
|
free (buf2);
|
return -1;
|
return -1;
|
}
|
}
|
|
|
if (remote_debug)
|
if (remote_debug)
|
{
|
{
|
fprintf (stderr, "putpkt (\"%s\"); [looking for ack]\n", buf2);
|
fprintf (stderr, "putpkt (\"%s\"); [looking for ack]\n", buf2);
|
fflush (stderr);
|
fflush (stderr);
|
}
|
}
|
cc = read (remote_desc, buf3, 1);
|
cc = read (remote_desc, buf3, 1);
|
if (remote_debug)
|
if (remote_debug)
|
{
|
{
|
fprintf (stderr, "[received '%c' (0x%x)]\n", buf3[0], buf3[0]);
|
fprintf (stderr, "[received '%c' (0x%x)]\n", buf3[0], buf3[0]);
|
fflush (stderr);
|
fflush (stderr);
|
}
|
}
|
|
|
if (cc <= 0)
|
if (cc <= 0)
|
{
|
{
|
if (cc == 0)
|
if (cc == 0)
|
fprintf (stderr, "putpkt(read): Got EOF\n");
|
fprintf (stderr, "putpkt(read): Got EOF\n");
|
else
|
else
|
perror ("putpkt(read)");
|
perror ("putpkt(read)");
|
|
|
free (buf2);
|
free (buf2);
|
return -1;
|
return -1;
|
}
|
}
|
|
|
/* Check for an input interrupt while we're here. */
|
/* Check for an input interrupt while we're here. */
|
if (buf3[0] == '\003' && current_inferior != NULL)
|
if (buf3[0] == '\003' && current_inferior != NULL)
|
(*the_target->request_interrupt) ();
|
(*the_target->request_interrupt) ();
|
}
|
}
|
while (buf3[0] != '+');
|
while (buf3[0] != '+');
|
|
|
free (buf2);
|
free (buf2);
|
return 1; /* Success! */
|
return 1; /* Success! */
|
}
|
}
|
|
|
/* Send a packet to the remote machine, with error checking. The data
|
/* Send a packet to the remote machine, with error checking. The data
|
of the packet is in BUF, and the packet should be a NUL-terminated
|
of the packet is in BUF, and the packet should be a NUL-terminated
|
string. Returns >= 0 on success, -1 otherwise. */
|
string. Returns >= 0 on success, -1 otherwise. */
|
|
|
int
|
int
|
putpkt (char *buf)
|
putpkt (char *buf)
|
{
|
{
|
return putpkt_binary (buf, strlen (buf));
|
return putpkt_binary (buf, strlen (buf));
|
}
|
}
|
|
|
/* Come here when we get an input interrupt from the remote side. This
|
/* Come here when we get an input interrupt from the remote side. This
|
interrupt should only be active while we are waiting for the child to do
|
interrupt should only be active while we are waiting for the child to do
|
something. About the only thing that should come through is a ^C, which
|
something. About the only thing that should come through is a ^C, which
|
will cause us to request child interruption. */
|
will cause us to request child interruption. */
|
|
|
static void
|
static void
|
input_interrupt (int unused)
|
input_interrupt (int unused)
|
{
|
{
|
fd_set readset;
|
fd_set readset;
|
struct timeval immediate = { 0, 0 };
|
struct timeval immediate = { 0, 0 };
|
|
|
/* Protect against spurious interrupts. This has been observed to
|
/* Protect against spurious interrupts. This has been observed to
|
be a problem under NetBSD 1.4 and 1.5. */
|
be a problem under NetBSD 1.4 and 1.5. */
|
|
|
FD_ZERO (&readset);
|
FD_ZERO (&readset);
|
FD_SET (remote_desc, &readset);
|
FD_SET (remote_desc, &readset);
|
if (select (remote_desc + 1, &readset, 0, 0, &immediate) > 0)
|
if (select (remote_desc + 1, &readset, 0, 0, &immediate) > 0)
|
{
|
{
|
int cc;
|
int cc;
|
char c = 0;
|
char c = 0;
|
|
|
cc = read (remote_desc, &c, 1);
|
cc = read (remote_desc, &c, 1);
|
|
|
if (cc != 1 || c != '\003' || current_inferior == NULL)
|
if (cc != 1 || c != '\003' || current_inferior == NULL)
|
{
|
{
|
fprintf (stderr, "input_interrupt, count = %d c = %d ('%c')\n",
|
fprintf (stderr, "input_interrupt, count = %d c = %d ('%c')\n",
|
cc, c, c);
|
cc, c, c);
|
return;
|
return;
|
}
|
}
|
|
|
(*the_target->request_interrupt) ();
|
(*the_target->request_interrupt) ();
|
}
|
}
|
}
|
}
|
|
|
/* Check if the remote side sent us an interrupt request (^C). */
|
/* Check if the remote side sent us an interrupt request (^C). */
|
void
|
void
|
check_remote_input_interrupt_request (void)
|
check_remote_input_interrupt_request (void)
|
{
|
{
|
/* This function may be called before establishing communications,
|
/* This function may be called before establishing communications,
|
therefore we need to validate the remote descriptor. */
|
therefore we need to validate the remote descriptor. */
|
|
|
if (remote_desc == INVALID_DESCRIPTOR)
|
if (remote_desc == INVALID_DESCRIPTOR)
|
return;
|
return;
|
|
|
input_interrupt (0);
|
input_interrupt (0);
|
}
|
}
|
|
|
/* Asynchronous I/O support. SIGIO must be enabled when waiting, in order to
|
/* Asynchronous I/O support. SIGIO must be enabled when waiting, in order to
|
accept Control-C from the client, and must be disabled when talking to
|
accept Control-C from the client, and must be disabled when talking to
|
the client. */
|
the client. */
|
|
|
static void
|
static void
|
unblock_async_io (void)
|
unblock_async_io (void)
|
{
|
{
|
#ifndef USE_WIN32API
|
#ifndef USE_WIN32API
|
sigset_t sigio_set;
|
sigset_t sigio_set;
|
|
|
sigemptyset (&sigio_set);
|
sigemptyset (&sigio_set);
|
sigaddset (&sigio_set, SIGIO);
|
sigaddset (&sigio_set, SIGIO);
|
sigprocmask (SIG_UNBLOCK, &sigio_set, NULL);
|
sigprocmask (SIG_UNBLOCK, &sigio_set, NULL);
|
#endif
|
#endif
|
}
|
}
|
|
|
/* Current state of asynchronous I/O. */
|
/* Current state of asynchronous I/O. */
|
static int async_io_enabled;
|
static int async_io_enabled;
|
|
|
/* Enable asynchronous I/O. */
|
/* Enable asynchronous I/O. */
|
void
|
void
|
enable_async_io (void)
|
enable_async_io (void)
|
{
|
{
|
if (async_io_enabled)
|
if (async_io_enabled)
|
return;
|
return;
|
|
|
#ifndef USE_WIN32API
|
#ifndef USE_WIN32API
|
signal (SIGIO, input_interrupt);
|
signal (SIGIO, input_interrupt);
|
#endif
|
#endif
|
async_io_enabled = 1;
|
async_io_enabled = 1;
|
}
|
}
|
|
|
/* Disable asynchronous I/O. */
|
/* Disable asynchronous I/O. */
|
void
|
void
|
disable_async_io (void)
|
disable_async_io (void)
|
{
|
{
|
if (!async_io_enabled)
|
if (!async_io_enabled)
|
return;
|
return;
|
|
|
#ifndef USE_WIN32API
|
#ifndef USE_WIN32API
|
signal (SIGIO, SIG_IGN);
|
signal (SIGIO, SIG_IGN);
|
#endif
|
#endif
|
async_io_enabled = 0;
|
async_io_enabled = 0;
|
}
|
}
|
|
|
void
|
void
|
initialize_async_io (void)
|
initialize_async_io (void)
|
{
|
{
|
/* Make sure that async I/O starts disabled. */
|
/* Make sure that async I/O starts disabled. */
|
async_io_enabled = 1;
|
async_io_enabled = 1;
|
disable_async_io ();
|
disable_async_io ();
|
|
|
/* Make sure the signal is unblocked. */
|
/* Make sure the signal is unblocked. */
|
unblock_async_io ();
|
unblock_async_io ();
|
}
|
}
|
|
|
/* Returns next char from remote GDB. -1 if error. */
|
/* Returns next char from remote GDB. -1 if error. */
|
|
|
static int
|
static int
|
readchar (void)
|
readchar (void)
|
{
|
{
|
static unsigned char buf[BUFSIZ];
|
static unsigned char buf[BUFSIZ];
|
static int bufcnt = 0;
|
static int bufcnt = 0;
|
static unsigned char *bufp;
|
static unsigned char *bufp;
|
|
|
if (bufcnt-- > 0)
|
if (bufcnt-- > 0)
|
return *bufp++;
|
return *bufp++;
|
|
|
bufcnt = read (remote_desc, buf, sizeof (buf));
|
bufcnt = read (remote_desc, buf, sizeof (buf));
|
|
|
if (bufcnt <= 0)
|
if (bufcnt <= 0)
|
{
|
{
|
if (bufcnt == 0)
|
if (bufcnt == 0)
|
fprintf (stderr, "readchar: Got EOF\n");
|
fprintf (stderr, "readchar: Got EOF\n");
|
else
|
else
|
perror ("readchar");
|
perror ("readchar");
|
|
|
return -1;
|
return -1;
|
}
|
}
|
|
|
bufp = buf;
|
bufp = buf;
|
bufcnt--;
|
bufcnt--;
|
return *bufp++;
|
return *bufp++;
|
}
|
}
|
|
|
/* Read a packet from the remote machine, with error checking,
|
/* Read a packet from the remote machine, with error checking,
|
and store it in BUF. Returns length of packet, or negative if error. */
|
and store it in BUF. Returns length of packet, or negative if error. */
|
|
|
int
|
int
|
getpkt (char *buf)
|
getpkt (char *buf)
|
{
|
{
|
char *bp;
|
char *bp;
|
unsigned char csum, c1, c2;
|
unsigned char csum, c1, c2;
|
int c;
|
int c;
|
|
|
while (1)
|
while (1)
|
{
|
{
|
csum = 0;
|
csum = 0;
|
|
|
while (1)
|
while (1)
|
{
|
{
|
c = readchar ();
|
c = readchar ();
|
if (c == '$')
|
if (c == '$')
|
break;
|
break;
|
if (remote_debug)
|
if (remote_debug)
|
{
|
{
|
fprintf (stderr, "[getpkt: discarding char '%c']\n", c);
|
fprintf (stderr, "[getpkt: discarding char '%c']\n", c);
|
fflush (stderr);
|
fflush (stderr);
|
}
|
}
|
|
|
if (c < 0)
|
if (c < 0)
|
return -1;
|
return -1;
|
}
|
}
|
|
|
bp = buf;
|
bp = buf;
|
while (1)
|
while (1)
|
{
|
{
|
c = readchar ();
|
c = readchar ();
|
if (c < 0)
|
if (c < 0)
|
return -1;
|
return -1;
|
if (c == '#')
|
if (c == '#')
|
break;
|
break;
|
*bp++ = c;
|
*bp++ = c;
|
csum += c;
|
csum += c;
|
}
|
}
|
*bp = 0;
|
*bp = 0;
|
|
|
c1 = fromhex (readchar ());
|
c1 = fromhex (readchar ());
|
c2 = fromhex (readchar ());
|
c2 = fromhex (readchar ());
|
|
|
if (csum == (c1 << 4) + c2)
|
if (csum == (c1 << 4) + c2)
|
break;
|
break;
|
|
|
fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n",
|
fprintf (stderr, "Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s\n",
|
(c1 << 4) + c2, csum, buf);
|
(c1 << 4) + c2, csum, buf);
|
write (remote_desc, "-", 1);
|
write (remote_desc, "-", 1);
|
}
|
}
|
|
|
if (remote_debug)
|
if (remote_debug)
|
{
|
{
|
fprintf (stderr, "getpkt (\"%s\"); [sending ack] \n", buf);
|
fprintf (stderr, "getpkt (\"%s\"); [sending ack] \n", buf);
|
fflush (stderr);
|
fflush (stderr);
|
}
|
}
|
|
|
write (remote_desc, "+", 1);
|
write (remote_desc, "+", 1);
|
|
|
if (remote_debug)
|
if (remote_debug)
|
{
|
{
|
fprintf (stderr, "[sent ack]\n");
|
fprintf (stderr, "[sent ack]\n");
|
fflush (stderr);
|
fflush (stderr);
|
}
|
}
|
|
|
return bp - buf;
|
return bp - buf;
|
}
|
}
|
|
|
void
|
void
|
write_ok (char *buf)
|
write_ok (char *buf)
|
{
|
{
|
buf[0] = 'O';
|
buf[0] = 'O';
|
buf[1] = 'K';
|
buf[1] = 'K';
|
buf[2] = '\0';
|
buf[2] = '\0';
|
}
|
}
|
|
|
void
|
void
|
write_enn (char *buf)
|
write_enn (char *buf)
|
{
|
{
|
/* Some day, we should define the meanings of the error codes... */
|
/* Some day, we should define the meanings of the error codes... */
|
buf[0] = 'E';
|
buf[0] = 'E';
|
buf[1] = '0';
|
buf[1] = '0';
|
buf[2] = '1';
|
buf[2] = '1';
|
buf[3] = '\0';
|
buf[3] = '\0';
|
}
|
}
|
|
|
void
|
void
|
convert_int_to_ascii (unsigned char *from, char *to, int n)
|
convert_int_to_ascii (unsigned char *from, char *to, int n)
|
{
|
{
|
int nib;
|
int nib;
|
int ch;
|
int ch;
|
while (n--)
|
while (n--)
|
{
|
{
|
ch = *from++;
|
ch = *from++;
|
nib = ((ch & 0xf0) >> 4) & 0x0f;
|
nib = ((ch & 0xf0) >> 4) & 0x0f;
|
*to++ = tohex (nib);
|
*to++ = tohex (nib);
|
nib = ch & 0x0f;
|
nib = ch & 0x0f;
|
*to++ = tohex (nib);
|
*to++ = tohex (nib);
|
}
|
}
|
*to++ = 0;
|
*to++ = 0;
|
}
|
}
|
|
|
|
|
void
|
void
|
convert_ascii_to_int (char *from, unsigned char *to, int n)
|
convert_ascii_to_int (char *from, unsigned char *to, int n)
|
{
|
{
|
int nib1, nib2;
|
int nib1, nib2;
|
while (n--)
|
while (n--)
|
{
|
{
|
nib1 = fromhex (*from++);
|
nib1 = fromhex (*from++);
|
nib2 = fromhex (*from++);
|
nib2 = fromhex (*from++);
|
*to++ = (((nib1 & 0x0f) << 4) & 0xf0) | (nib2 & 0x0f);
|
*to++ = (((nib1 & 0x0f) << 4) & 0xf0) | (nib2 & 0x0f);
|
}
|
}
|
}
|
}
|
|
|
static char *
|
static char *
|
outreg (int regno, char *buf)
|
outreg (int regno, char *buf)
|
{
|
{
|
if ((regno >> 12) != 0)
|
if ((regno >> 12) != 0)
|
*buf++ = tohex ((regno >> 12) & 0xf);
|
*buf++ = tohex ((regno >> 12) & 0xf);
|
if ((regno >> 8) != 0)
|
if ((regno >> 8) != 0)
|
*buf++ = tohex ((regno >> 8) & 0xf);
|
*buf++ = tohex ((regno >> 8) & 0xf);
|
*buf++ = tohex ((regno >> 4) & 0xf);
|
*buf++ = tohex ((regno >> 4) & 0xf);
|
*buf++ = tohex (regno & 0xf);
|
*buf++ = tohex (regno & 0xf);
|
*buf++ = ':';
|
*buf++ = ':';
|
collect_register_as_string (regno, buf);
|
collect_register_as_string (regno, buf);
|
buf += 2 * register_size (regno);
|
buf += 2 * register_size (regno);
|
*buf++ = ';';
|
*buf++ = ';';
|
|
|
return buf;
|
return buf;
|
}
|
}
|
|
|
void
|
void
|
new_thread_notify (int id)
|
new_thread_notify (int id)
|
{
|
{
|
char own_buf[256];
|
char own_buf[256];
|
|
|
/* The `n' response is not yet part of the remote protocol. Do nothing. */
|
/* The `n' response is not yet part of the remote protocol. Do nothing. */
|
if (1)
|
if (1)
|
return;
|
return;
|
|
|
if (server_waiting == 0)
|
if (server_waiting == 0)
|
return;
|
return;
|
|
|
sprintf (own_buf, "n%x", id);
|
sprintf (own_buf, "n%x", id);
|
disable_async_io ();
|
disable_async_io ();
|
putpkt (own_buf);
|
putpkt (own_buf);
|
enable_async_io ();
|
enable_async_io ();
|
}
|
}
|
|
|
void
|
void
|
dead_thread_notify (int id)
|
dead_thread_notify (int id)
|
{
|
{
|
char own_buf[256];
|
char own_buf[256];
|
|
|
/* The `x' response is not yet part of the remote protocol. Do nothing. */
|
/* The `x' response is not yet part of the remote protocol. Do nothing. */
|
if (1)
|
if (1)
|
return;
|
return;
|
|
|
sprintf (own_buf, "x%x", id);
|
sprintf (own_buf, "x%x", id);
|
disable_async_io ();
|
disable_async_io ();
|
putpkt (own_buf);
|
putpkt (own_buf);
|
enable_async_io ();
|
enable_async_io ();
|
}
|
}
|
|
|
void
|
void
|
prepare_resume_reply (char *buf, char status, unsigned char sig)
|
prepare_resume_reply (char *buf, char status, unsigned char sig)
|
{
|
{
|
int nib;
|
int nib;
|
|
|
*buf++ = status;
|
*buf++ = status;
|
|
|
nib = ((sig & 0xf0) >> 4);
|
nib = ((sig & 0xf0) >> 4);
|
*buf++ = tohex (nib);
|
*buf++ = tohex (nib);
|
nib = sig & 0x0f;
|
nib = sig & 0x0f;
|
*buf++ = tohex (nib);
|
*buf++ = tohex (nib);
|
|
|
if (status == 'T')
|
if (status == 'T')
|
{
|
{
|
const char **regp = gdbserver_expedite_regs;
|
const char **regp = gdbserver_expedite_regs;
|
|
|
if (the_target->stopped_by_watchpoint != NULL
|
if (the_target->stopped_by_watchpoint != NULL
|
&& (*the_target->stopped_by_watchpoint) ())
|
&& (*the_target->stopped_by_watchpoint) ())
|
{
|
{
|
CORE_ADDR addr;
|
CORE_ADDR addr;
|
int i;
|
int i;
|
|
|
strncpy (buf, "watch:", 6);
|
strncpy (buf, "watch:", 6);
|
buf += 6;
|
buf += 6;
|
|
|
addr = (*the_target->stopped_data_address) ();
|
addr = (*the_target->stopped_data_address) ();
|
|
|
/* Convert each byte of the address into two hexadecimal chars.
|
/* Convert each byte of the address into two hexadecimal chars.
|
Note that we take sizeof (void *) instead of sizeof (addr);
|
Note that we take sizeof (void *) instead of sizeof (addr);
|
this is to avoid sending a 64-bit address to a 32-bit GDB. */
|
this is to avoid sending a 64-bit address to a 32-bit GDB. */
|
for (i = sizeof (void *) * 2; i > 0; i--)
|
for (i = sizeof (void *) * 2; i > 0; i--)
|
{
|
{
|
*buf++ = tohex ((addr >> (i - 1) * 4) & 0xf);
|
*buf++ = tohex ((addr >> (i - 1) * 4) & 0xf);
|
}
|
}
|
*buf++ = ';';
|
*buf++ = ';';
|
}
|
}
|
|
|
while (*regp)
|
while (*regp)
|
{
|
{
|
buf = outreg (find_regno (*regp), buf);
|
buf = outreg (find_regno (*regp), buf);
|
regp ++;
|
regp ++;
|
}
|
}
|
|
|
/* Formerly, if the debugger had not used any thread features we would not
|
/* Formerly, if the debugger had not used any thread features we would not
|
burden it with a thread status response. This was for the benefit of
|
burden it with a thread status response. This was for the benefit of
|
GDB 4.13 and older. However, in recent GDB versions the check
|
GDB 4.13 and older. However, in recent GDB versions the check
|
(``if (cont_thread != 0)'') does not have the desired effect because of
|
(``if (cont_thread != 0)'') does not have the desired effect because of
|
sillyness in the way that the remote protocol handles specifying a thread.
|
sillyness in the way that the remote protocol handles specifying a thread.
|
Since thread support relies on qSymbol support anyway, assume GDB can handle
|
Since thread support relies on qSymbol support anyway, assume GDB can handle
|
threads. */
|
threads. */
|
|
|
if (using_threads)
|
if (using_threads)
|
{
|
{
|
unsigned int gdb_id_from_wait;
|
unsigned int gdb_id_from_wait;
|
|
|
/* FIXME right place to set this? */
|
/* FIXME right place to set this? */
|
thread_from_wait = ((struct inferior_list_entry *)current_inferior)->id;
|
thread_from_wait = ((struct inferior_list_entry *)current_inferior)->id;
|
gdb_id_from_wait = thread_to_gdb_id (current_inferior);
|
gdb_id_from_wait = thread_to_gdb_id (current_inferior);
|
|
|
if (debug_threads)
|
if (debug_threads)
|
fprintf (stderr, "Writing resume reply for %ld\n\n", thread_from_wait);
|
fprintf (stderr, "Writing resume reply for %ld\n\n", thread_from_wait);
|
/* This if (1) ought to be unnecessary. But remote_wait in GDB
|
/* This if (1) ought to be unnecessary. But remote_wait in GDB
|
will claim this event belongs to inferior_ptid if we do not
|
will claim this event belongs to inferior_ptid if we do not
|
specify a thread, and there's no way for gdbserver to know
|
specify a thread, and there's no way for gdbserver to know
|
what inferior_ptid is. */
|
what inferior_ptid is. */
|
if (1 || old_thread_from_wait != thread_from_wait)
|
if (1 || old_thread_from_wait != thread_from_wait)
|
{
|
{
|
general_thread = thread_from_wait;
|
general_thread = thread_from_wait;
|
sprintf (buf, "thread:%x;", gdb_id_from_wait);
|
sprintf (buf, "thread:%x;", gdb_id_from_wait);
|
buf += strlen (buf);
|
buf += strlen (buf);
|
old_thread_from_wait = thread_from_wait;
|
old_thread_from_wait = thread_from_wait;
|
}
|
}
|
}
|
}
|
|
|
if (dlls_changed)
|
if (dlls_changed)
|
{
|
{
|
strcpy (buf, "library:;");
|
strcpy (buf, "library:;");
|
buf += strlen (buf);
|
buf += strlen (buf);
|
dlls_changed = 0;
|
dlls_changed = 0;
|
}
|
}
|
}
|
}
|
/* For W and X, we're done. */
|
/* For W and X, we're done. */
|
*buf++ = 0;
|
*buf++ = 0;
|
}
|
}
|
|
|
void
|
void
|
decode_m_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr)
|
decode_m_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr)
|
{
|
{
|
int i = 0, j = 0;
|
int i = 0, j = 0;
|
char ch;
|
char ch;
|
*mem_addr_ptr = *len_ptr = 0;
|
*mem_addr_ptr = *len_ptr = 0;
|
|
|
while ((ch = from[i++]) != ',')
|
while ((ch = from[i++]) != ',')
|
{
|
{
|
*mem_addr_ptr = *mem_addr_ptr << 4;
|
*mem_addr_ptr = *mem_addr_ptr << 4;
|
*mem_addr_ptr |= fromhex (ch) & 0x0f;
|
*mem_addr_ptr |= fromhex (ch) & 0x0f;
|
}
|
}
|
|
|
for (j = 0; j < 4; j++)
|
for (j = 0; j < 4; j++)
|
{
|
{
|
if ((ch = from[i++]) == 0)
|
if ((ch = from[i++]) == 0)
|
break;
|
break;
|
*len_ptr = *len_ptr << 4;
|
*len_ptr = *len_ptr << 4;
|
*len_ptr |= fromhex (ch) & 0x0f;
|
*len_ptr |= fromhex (ch) & 0x0f;
|
}
|
}
|
}
|
}
|
|
|
void
|
void
|
decode_M_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr,
|
decode_M_packet (char *from, CORE_ADDR *mem_addr_ptr, unsigned int *len_ptr,
|
unsigned char *to)
|
unsigned char *to)
|
{
|
{
|
int i = 0;
|
int i = 0;
|
char ch;
|
char ch;
|
*mem_addr_ptr = *len_ptr = 0;
|
*mem_addr_ptr = *len_ptr = 0;
|
|
|
while ((ch = from[i++]) != ',')
|
while ((ch = from[i++]) != ',')
|
{
|
{
|
*mem_addr_ptr = *mem_addr_ptr << 4;
|
*mem_addr_ptr = *mem_addr_ptr << 4;
|
*mem_addr_ptr |= fromhex (ch) & 0x0f;
|
*mem_addr_ptr |= fromhex (ch) & 0x0f;
|
}
|
}
|
|
|
while ((ch = from[i++]) != ':')
|
while ((ch = from[i++]) != ':')
|
{
|
{
|
*len_ptr = *len_ptr << 4;
|
*len_ptr = *len_ptr << 4;
|
*len_ptr |= fromhex (ch) & 0x0f;
|
*len_ptr |= fromhex (ch) & 0x0f;
|
}
|
}
|
|
|
convert_ascii_to_int (&from[i++], to, *len_ptr);
|
convert_ascii_to_int (&from[i++], to, *len_ptr);
|
}
|
}
|
|
|
int
|
int
|
decode_X_packet (char *from, int packet_len, CORE_ADDR *mem_addr_ptr,
|
decode_X_packet (char *from, int packet_len, CORE_ADDR *mem_addr_ptr,
|
unsigned int *len_ptr, unsigned char *to)
|
unsigned int *len_ptr, unsigned char *to)
|
{
|
{
|
int i = 0;
|
int i = 0;
|
char ch;
|
char ch;
|
*mem_addr_ptr = *len_ptr = 0;
|
*mem_addr_ptr = *len_ptr = 0;
|
|
|
while ((ch = from[i++]) != ',')
|
while ((ch = from[i++]) != ',')
|
{
|
{
|
*mem_addr_ptr = *mem_addr_ptr << 4;
|
*mem_addr_ptr = *mem_addr_ptr << 4;
|
*mem_addr_ptr |= fromhex (ch) & 0x0f;
|
*mem_addr_ptr |= fromhex (ch) & 0x0f;
|
}
|
}
|
|
|
while ((ch = from[i++]) != ':')
|
while ((ch = from[i++]) != ':')
|
{
|
{
|
*len_ptr = *len_ptr << 4;
|
*len_ptr = *len_ptr << 4;
|
*len_ptr |= fromhex (ch) & 0x0f;
|
*len_ptr |= fromhex (ch) & 0x0f;
|
}
|
}
|
|
|
if (remote_unescape_input ((const gdb_byte *) &from[i], packet_len - i,
|
if (remote_unescape_input ((const gdb_byte *) &from[i], packet_len - i,
|
to, *len_ptr) != *len_ptr)
|
to, *len_ptr) != *len_ptr)
|
return -1;
|
return -1;
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Decode a qXfer write request. */
|
/* Decode a qXfer write request. */
|
int
|
int
|
decode_xfer_write (char *buf, int packet_len, char **annex, CORE_ADDR *offset,
|
decode_xfer_write (char *buf, int packet_len, char **annex, CORE_ADDR *offset,
|
unsigned int *len, unsigned char *data)
|
unsigned int *len, unsigned char *data)
|
{
|
{
|
char ch;
|
char ch;
|
|
|
/* Extract and NUL-terminate the annex. */
|
/* Extract and NUL-terminate the annex. */
|
*annex = buf;
|
*annex = buf;
|
while (*buf && *buf != ':')
|
while (*buf && *buf != ':')
|
buf++;
|
buf++;
|
if (*buf == '\0')
|
if (*buf == '\0')
|
return -1;
|
return -1;
|
*buf++ = 0;
|
*buf++ = 0;
|
|
|
/* Extract the offset. */
|
/* Extract the offset. */
|
*offset = 0;
|
*offset = 0;
|
while ((ch = *buf++) != ':')
|
while ((ch = *buf++) != ':')
|
{
|
{
|
*offset = *offset << 4;
|
*offset = *offset << 4;
|
*offset |= fromhex (ch) & 0x0f;
|
*offset |= fromhex (ch) & 0x0f;
|
}
|
}
|
|
|
/* Get encoded data. */
|
/* Get encoded data. */
|
packet_len -= buf - *annex;
|
packet_len -= buf - *annex;
|
*len = remote_unescape_input ((const gdb_byte *) buf, packet_len,
|
*len = remote_unescape_input ((const gdb_byte *) buf, packet_len,
|
data, packet_len);
|
data, packet_len);
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Ask GDB for the address of NAME, and return it in ADDRP if found.
|
/* Ask GDB for the address of NAME, and return it in ADDRP if found.
|
Returns 1 if the symbol is found, 0 if it is not, -1 on error. */
|
Returns 1 if the symbol is found, 0 if it is not, -1 on error. */
|
|
|
int
|
int
|
look_up_one_symbol (const char *name, CORE_ADDR *addrp)
|
look_up_one_symbol (const char *name, CORE_ADDR *addrp)
|
{
|
{
|
char own_buf[266], *p, *q;
|
char own_buf[266], *p, *q;
|
int len;
|
int len;
|
struct sym_cache *sym;
|
struct sym_cache *sym;
|
|
|
/* Check the cache first. */
|
/* Check the cache first. */
|
for (sym = symbol_cache; sym; sym = sym->next)
|
for (sym = symbol_cache; sym; sym = sym->next)
|
if (strcmp (name, sym->name) == 0)
|
if (strcmp (name, sym->name) == 0)
|
{
|
{
|
*addrp = sym->addr;
|
*addrp = sym->addr;
|
return 1;
|
return 1;
|
}
|
}
|
|
|
/* If we've passed the call to thread_db_look_up_symbols, then
|
/* If we've passed the call to thread_db_look_up_symbols, then
|
anything not in the cache must not exist; we're not interested
|
anything not in the cache must not exist; we're not interested
|
in any libraries loaded after that point, only in symbols in
|
in any libraries loaded after that point, only in symbols in
|
libpthread.so. It might not be an appropriate time to look
|
libpthread.so. It might not be an appropriate time to look
|
up a symbol, e.g. while we're trying to fetch registers. */
|
up a symbol, e.g. while we're trying to fetch registers. */
|
if (all_symbols_looked_up)
|
if (all_symbols_looked_up)
|
return 0;
|
return 0;
|
|
|
/* Send the request. */
|
/* Send the request. */
|
strcpy (own_buf, "qSymbol:");
|
strcpy (own_buf, "qSymbol:");
|
hexify (own_buf + strlen ("qSymbol:"), name, strlen (name));
|
hexify (own_buf + strlen ("qSymbol:"), name, strlen (name));
|
if (putpkt (own_buf) < 0)
|
if (putpkt (own_buf) < 0)
|
return -1;
|
return -1;
|
|
|
/* FIXME: Eventually add buffer overflow checking (to getpkt?) */
|
/* FIXME: Eventually add buffer overflow checking (to getpkt?) */
|
len = getpkt (own_buf);
|
len = getpkt (own_buf);
|
if (len < 0)
|
if (len < 0)
|
return -1;
|
return -1;
|
|
|
/* We ought to handle pretty much any packet at this point while we
|
/* We ought to handle pretty much any packet at this point while we
|
wait for the qSymbol "response". That requires re-entering the
|
wait for the qSymbol "response". That requires re-entering the
|
main loop. For now, this is an adequate approximation; allow
|
main loop. For now, this is an adequate approximation; allow
|
GDB to read from memory while it figures out the address of the
|
GDB to read from memory while it figures out the address of the
|
symbol. */
|
symbol. */
|
while (own_buf[0] == 'm')
|
while (own_buf[0] == 'm')
|
{
|
{
|
CORE_ADDR mem_addr;
|
CORE_ADDR mem_addr;
|
unsigned char *mem_buf;
|
unsigned char *mem_buf;
|
unsigned int mem_len;
|
unsigned int mem_len;
|
|
|
decode_m_packet (&own_buf[1], &mem_addr, &mem_len);
|
decode_m_packet (&own_buf[1], &mem_addr, &mem_len);
|
mem_buf = malloc (mem_len);
|
mem_buf = malloc (mem_len);
|
if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0)
|
if (read_inferior_memory (mem_addr, mem_buf, mem_len) == 0)
|
convert_int_to_ascii (mem_buf, own_buf, mem_len);
|
convert_int_to_ascii (mem_buf, own_buf, mem_len);
|
else
|
else
|
write_enn (own_buf);
|
write_enn (own_buf);
|
free (mem_buf);
|
free (mem_buf);
|
if (putpkt (own_buf) < 0)
|
if (putpkt (own_buf) < 0)
|
return -1;
|
return -1;
|
len = getpkt (own_buf);
|
len = getpkt (own_buf);
|
if (len < 0)
|
if (len < 0)
|
return -1;
|
return -1;
|
}
|
}
|
|
|
if (strncmp (own_buf, "qSymbol:", strlen ("qSymbol:")) != 0)
|
if (strncmp (own_buf, "qSymbol:", strlen ("qSymbol:")) != 0)
|
{
|
{
|
warning ("Malformed response to qSymbol, ignoring: %s\n", own_buf);
|
warning ("Malformed response to qSymbol, ignoring: %s\n", own_buf);
|
return -1;
|
return -1;
|
}
|
}
|
|
|
p = own_buf + strlen ("qSymbol:");
|
p = own_buf + strlen ("qSymbol:");
|
q = p;
|
q = p;
|
while (*q && *q != ':')
|
while (*q && *q != ':')
|
q++;
|
q++;
|
|
|
/* Make sure we found a value for the symbol. */
|
/* Make sure we found a value for the symbol. */
|
if (p == q || *q == '\0')
|
if (p == q || *q == '\0')
|
return 0;
|
return 0;
|
|
|
decode_address (addrp, p, q - p);
|
decode_address (addrp, p, q - p);
|
|
|
/* Save the symbol in our cache. */
|
/* Save the symbol in our cache. */
|
sym = malloc (sizeof (*sym));
|
sym = malloc (sizeof (*sym));
|
sym->name = strdup (name);
|
sym->name = strdup (name);
|
sym->addr = *addrp;
|
sym->addr = *addrp;
|
sym->next = symbol_cache;
|
sym->next = symbol_cache;
|
symbol_cache = sym;
|
symbol_cache = sym;
|
|
|
return 1;
|
return 1;
|
}
|
}
|
|
|
void
|
void
|
monitor_output (const char *msg)
|
monitor_output (const char *msg)
|
{
|
{
|
char *buf = malloc (strlen (msg) * 2 + 2);
|
char *buf = malloc (strlen (msg) * 2 + 2);
|
|
|
buf[0] = 'O';
|
buf[0] = 'O';
|
hexify (buf + 1, msg, 0);
|
hexify (buf + 1, msg, 0);
|
|
|
putpkt (buf);
|
putpkt (buf);
|
free (buf);
|
free (buf);
|
}
|
}
|
|
|
/* Return a malloc allocated string with special characters from TEXT
|
/* Return a malloc allocated string with special characters from TEXT
|
replaced by entity references. */
|
replaced by entity references. */
|
|
|
char *
|
char *
|
xml_escape_text (const char *text)
|
xml_escape_text (const char *text)
|
{
|
{
|
char *result;
|
char *result;
|
int i, special;
|
int i, special;
|
|
|
/* Compute the length of the result. */
|
/* Compute the length of the result. */
|
for (i = 0, special = 0; text[i] != '\0'; i++)
|
for (i = 0, special = 0; text[i] != '\0'; i++)
|
switch (text[i])
|
switch (text[i])
|
{
|
{
|
case '\'':
|
case '\'':
|
case '\"':
|
case '\"':
|
special += 5;
|
special += 5;
|
break;
|
break;
|
case '&':
|
case '&':
|
special += 4;
|
special += 4;
|
break;
|
break;
|
case '<':
|
case '<':
|
case '>':
|
case '>':
|
special += 3;
|
special += 3;
|
break;
|
break;
|
default:
|
default:
|
break;
|
break;
|
}
|
}
|
|
|
/* Expand the result. */
|
/* Expand the result. */
|
result = malloc (i + special + 1);
|
result = malloc (i + special + 1);
|
for (i = 0, special = 0; text[i] != '\0'; i++)
|
for (i = 0, special = 0; text[i] != '\0'; i++)
|
switch (text[i])
|
switch (text[i])
|
{
|
{
|
case '\'':
|
case '\'':
|
strcpy (result + i + special, "'");
|
strcpy (result + i + special, "'");
|
special += 5;
|
special += 5;
|
break;
|
break;
|
case '\"':
|
case '\"':
|
strcpy (result + i + special, """);
|
strcpy (result + i + special, """);
|
special += 5;
|
special += 5;
|
break;
|
break;
|
case '&':
|
case '&':
|
strcpy (result + i + special, "&");
|
strcpy (result + i + special, "&");
|
special += 4;
|
special += 4;
|
break;
|
break;
|
case '<':
|
case '<':
|
strcpy (result + i + special, "<");
|
strcpy (result + i + special, "<");
|
special += 3;
|
special += 3;
|
break;
|
break;
|
case '>':
|
case '>':
|
strcpy (result + i + special, ">");
|
strcpy (result + i + special, ">");
|
special += 3;
|
special += 3;
|
break;
|
break;
|
default:
|
default:
|
result[i + special] = text[i];
|
result[i + special] = text[i];
|
break;
|
break;
|
}
|
}
|
result[i + special] = '\0';
|
result[i + special] = '\0';
|
|
|
return result;
|
return result;
|
}
|
}
|
|
|
