-/*
- * Command: info remote-process
- *
- * This implements Cisco's version of the "info proc" command.
- *
- * This query allows the target stub to return an arbitrary string
- * (or strings) giving arbitrary information about the target process.
- * This is optional; the target stub isn't required to implement it.
- *
- * Syntax: qfProcessInfo request first string
- * qsProcessInfo request subsequent string
- * reply: 'O'<hex-encoded-string>
- * 'l' last reply (empty)
- */
-
-static void
-remote_info_process (char *args, int from_tty)
-{
- char *buf = alloca (PBUFSIZ);
-
- if (remote_desc == 0)
- error ("Command can only be used when connected to the remote target.");
-
- putpkt ("qfProcessInfo");
- getpkt (buf, PBUFSIZ, 0);
- if (buf[0] == 0)
- return; /* Silently: target does not support this feature. */
-
- if (buf[0] == 'E')
- error ("info proc: target error.");
-
- while (buf[0] == 'O') /* Capitol-O packet */
- {
- remote_console_output (&buf[1]);
- putpkt ("qsProcessInfo");
- getpkt (buf, PBUFSIZ, 0);
- }
-}
-
-/*
- * Target Cisco
- */
-
-static void
-remote_cisco_open (char *name, int from_tty)
-{
- if (name == 0)
- error (
- "To open a remote debug connection, you need to specify what \n\
-device is attached to the remote system (e.g. host:port).");
-
- /* See FIXME above */
- wait_forever_enabled_p = 1;
-
- target_preopen (from_tty);
-
- unpush_target (&remote_cisco_ops);
-
- remote_desc = SERIAL_OPEN (name);
- if (!remote_desc)
- perror_with_name (name);
-
- /*
- * If a baud rate was specified on the gdb command line it will
- * be greater than the initial value of -1. If it is, use it otherwise
- * default to 9600
- */
-
- baud_rate = (baud_rate > 0) ? baud_rate : 9600;
- if (SERIAL_SETBAUDRATE (remote_desc, baud_rate))
- {
- SERIAL_CLOSE (remote_desc);
- perror_with_name (name);
- }
-
- SERIAL_RAW (remote_desc);
-
- /* If there is something sitting in the buffer we might take it as a
- response to a command, which would be bad. */
- SERIAL_FLUSH_INPUT (remote_desc);
-
- if (from_tty)
- {
- puts_filtered ("Remote debugging using ");
- puts_filtered (name);
- puts_filtered ("\n");
- }
-
- remote_cisco_mode = 1;
-
- push_target (&remote_cisco_ops); /* Switch to using cisco target now */
-
- init_all_packet_configs ();
-
- general_thread = -2;
- continue_thread = -2;
-
- /* Probe for ability to use "ThreadInfo" query, as required. */
- use_threadinfo_query = 1;
- use_threadextra_query = 1;
-
- /* Without this, some commands which require an active target (such
- as kill) won't work. This variable serves (at least) double duty
- as both the pid of the target process (if it has such), and as a
- flag indicating that a target is active. These functions should
- be split out into seperate variables, especially since GDB will
- someday have a notion of debugging several processes. */
- inferior_pid = MAGIC_NULL_PID;
-
- /* Start the remote connection; if error (0), discard this target. */
-
- if (!catch_errors (remote_start_remote_dummy, (char *) 0,
- "Couldn't establish connection to remote target\n",
- RETURN_MASK_ALL))
- {
- pop_target ();
- return;
- }
-}
-
-static void
-remote_cisco_close (int quitting)
-{
- remote_cisco_mode = 0;
- remote_close (quitting);
-}
-
-static void
-remote_cisco_mourn (void)
-{
- remote_mourn_1 (&remote_cisco_ops);
-}
-
-enum
-{
- READ_MORE,
- FATAL_ERROR,
- ENTER_DEBUG,
- DISCONNECT_TELNET
-}
-minitelnet_return;
-
-/* shared between readsocket() and readtty() */
-static char *tty_input;
-
-static int escape_count;
-static int echo_check;
-extern int quit_flag;
-
-static int
-readsocket (void)
-{
- int data;
-
- /* Loop until the socket doesn't have any more data */
-
- while ((data = readchar (0)) >= 0)
- {
- /* Check for the escape sequence */
- if (data == '|')
- {
- /* If this is the fourth escape, get out */
- if (++escape_count == 4)
- {
- return ENTER_DEBUG;
- }
- else
- { /* This is a '|', but not the fourth in a row.
- Continue without echoing it. If it isn't actually
- one of four in a row, it'll be echoed later. */
- continue;
- }
- }
- else
- /* Not a '|' */
- {
- /* Ensure any pending '|'s are flushed. */
-
- for (; escape_count > 0; escape_count--)
- putchar ('|');
- }
-
- if (data == '\r') /* If this is a return character, */
- continue; /* - just supress it. */
-
- if (echo_check != -1) /* Check for echo of user input. */
- {
- if (tty_input[echo_check] == data)
- {
- echo_check++; /* Character matched user input: */
- continue; /* Continue without echoing it. */
- }
- else if ((data == '\n') && (tty_input[echo_check] == '\r'))
- { /* End of the line (and of echo checking). */
- echo_check = -1; /* No more echo supression */
- continue; /* Continue without echoing. */
- }
- else
- { /* Failed check for echo of user input.
- We now have some suppressed output to flush! */
- int j;
-
- for (j = 0; j < echo_check; j++)
- putchar (tty_input[j]);
- echo_check = -1;
- }
- }
- putchar (data); /* Default case: output the char. */
- }
-
- if (data == SERIAL_TIMEOUT) /* Timeout returned from readchar. */
- return READ_MORE; /* Try to read some more */
- else
- return FATAL_ERROR; /* Trouble, bail out */
-}
-
-static int
-readtty (void)
-{
- int tty_bytecount;
-
- /* First, read a buffer full from the terminal */
- tty_bytecount = read (fileno (stdin), tty_input, sizeof (tty_input) - 1);
- if (tty_bytecount == -1)
- {
- perror ("readtty: read failed");
- return FATAL_ERROR;
- }
-
- /* Remove a quoted newline. */
- if (tty_input[tty_bytecount - 1] == '\n' &&
- tty_input[tty_bytecount - 2] == '\\') /* line ending in backslash */
- {
- tty_input[--tty_bytecount] = 0; /* remove newline */
- tty_input[--tty_bytecount] = 0; /* remove backslash */
- }
-
- /* Turn trailing newlines into returns */
- if (tty_input[tty_bytecount - 1] == '\n')
- tty_input[tty_bytecount - 1] = '\r';
-
- /* If the line consists of a ~, enter debugging mode. */
- if ((tty_input[0] == '~') && (tty_bytecount == 2))
- return ENTER_DEBUG;
-
- /* Make this a zero terminated string and write it out */
- tty_input[tty_bytecount] = 0;
- if (SERIAL_WRITE (remote_desc, tty_input, tty_bytecount))
- {
- perror_with_name ("readtty: write failed");
- return FATAL_ERROR;
- }
-
- return READ_MORE;
-}
-
-static int
-minitelnet (void)
-{
- fd_set input; /* file descriptors for select */
- int tablesize; /* max number of FDs for select */
- int status;
- int quit_count = 0;
-
- extern int escape_count; /* global shared by readsocket */
- extern int echo_check; /* ditto */
-
- escape_count = 0;
- echo_check = -1;
-
- tablesize = 8 * sizeof (input);
-
- for (;;)
- {
- /* Check for anything from our socket - doesn't block. Note that
- this must be done *before* the select as there may be
- buffered I/O waiting to be processed. */
-
- if ((status = readsocket ()) == FATAL_ERROR)
- {
- error ("Debugging terminated by communications error");
- }
- else if (status != READ_MORE)
- {
- return (status);
- }
-
- fflush (stdout); /* Flush output before blocking */
-
- /* Now block on more socket input or TTY input */
-
- FD_ZERO (&input);
- FD_SET (fileno (stdin), &input);
- FD_SET (DEPRECATED_SERIAL_FD (remote_desc), &input);
-
- status = select (tablesize, &input, 0, 0, 0);
- if ((status == -1) && (errno != EINTR))
- {
- error ("Communications error on select %d", errno);
- }
-
- /* Handle Control-C typed */
-
- if (quit_flag)
- {
- if ((++quit_count) == 2)
- {
- if (query ("Interrupt GDB? "))
- {
- printf_filtered ("Interrupted by user.\n");
- return_to_top_level (RETURN_QUIT);
- }
- quit_count = 0;
- }
- quit_flag = 0;
-
- if (remote_break)
- SERIAL_SEND_BREAK (remote_desc);
- else
- SERIAL_WRITE (remote_desc, "\003", 1);
-
- continue;
- }
-
- /* Handle console input */
-
- if (FD_ISSET (fileno (stdin), &input))
- {
- quit_count = 0;
- echo_check = 0;
- status = readtty ();
- if (status == READ_MORE)
- continue;
-
- return status; /* telnet session ended */
- }
- }
-}
-
-static int
-remote_cisco_wait (int pid, struct target_waitstatus *status)
-{
- if (minitelnet () != ENTER_DEBUG)
- {
- error ("Debugging session terminated by protocol error");
- }
- putpkt ("?");
- return remote_wait (pid, status);
-}
-
-static void
-init_remote_cisco_ops (void)
-{
- remote_cisco_ops.to_shortname = "cisco";
- remote_cisco_ops.to_longname = "Remote serial target in cisco-specific protocol";
- remote_cisco_ops.to_doc =
- "Use a remote machine via TCP, using a cisco-specific protocol.\n\
-Specify the serial device it is connected to (e.g. host:2020).";
- remote_cisco_ops.to_open = remote_cisco_open;
- remote_cisco_ops.to_close = remote_cisco_close;
- remote_cisco_ops.to_detach = remote_detach;
- remote_cisco_ops.to_resume = remote_resume;
- remote_cisco_ops.to_wait = remote_cisco_wait;
- remote_cisco_ops.to_fetch_registers = remote_fetch_registers;
- remote_cisco_ops.to_store_registers = remote_store_registers;
- remote_cisco_ops.to_prepare_to_store = remote_prepare_to_store;
- remote_cisco_ops.to_xfer_memory = remote_xfer_memory;
- remote_cisco_ops.to_files_info = remote_files_info;
- remote_cisco_ops.to_insert_breakpoint = remote_insert_breakpoint;
- remote_cisco_ops.to_remove_breakpoint = remote_remove_breakpoint;
- remote_cisco_ops.to_kill = remote_kill;
- remote_cisco_ops.to_load = generic_load;
- remote_cisco_ops.to_mourn_inferior = remote_cisco_mourn;
- remote_cisco_ops.to_thread_alive = remote_thread_alive;
- remote_cisco_ops.to_find_new_threads = remote_threads_info;
- remote_ops.to_extra_thread_info = remote_threads_extra_info;
- remote_cisco_ops.to_stratum = process_stratum;
- remote_cisco_ops.to_has_all_memory = 1;
- remote_cisco_ops.to_has_memory = 1;
- remote_cisco_ops.to_has_stack = 1;
- remote_cisco_ops.to_has_registers = 1;
- remote_cisco_ops.to_has_execution = 1;
- remote_cisco_ops.to_magic = OPS_MAGIC;
-}
-