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/* |
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* Copyright (C) 2003-2006 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: console.c,v 1.15 2006/02/18 13:42:38 debug Exp $ |
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* |
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* Generic console support functions. |
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* |
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* This module is used by individual device drivers, for example serial |
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* controllers, keyboards, or other devices which need to attach to the |
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* emulator's real stdin/stdout. |
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* |
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* The idea is that several input and output streams (console handles) are |
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* allowed. As long as the number of input streams is <= 1, then everything |
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* can be done in the emulator's default terminal window. |
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* |
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* If the number of inputs is more than 1, it is necessary to open up slave |
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* xterm windows for each input. (Otherwise the behaviour is undefined; i.e. |
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* which of two emulated serial controllers would get keyboard input?) |
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* |
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* (If the -x command line option is NOT used, then slaves are not opened up. |
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* Instead, a warning message is printed, and input is not allowed.) |
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* |
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* Note that console handles that _allow_ input but are not yet used for |
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* output are not counted. This allows a machine to have, say, 2 serial ports |
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* which can be used for both input and output, and it will still be possible |
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* to run in the default terminal window as long as only one of those serial |
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* ports is actually used. |
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* |
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* xterms are opened up "on demand", when output is sent to them. |
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* |
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* The MAIN console handle (fixed as handle nr 0) is the one used by the |
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* default terminal window. A machine which registers a serial controller, |
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* which should be used as the main way of communicating with guest operating |
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* systems running on that machine, should set machine->main_console_handle |
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* to the handle of the correct port on that controller. |
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* |
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* |
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* NOTE: The code in this module is mostly non-reentrant. |
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*/ |
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|
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#include <errno.h> |
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#include <signal.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <termios.h> |
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#include <unistd.h> |
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#include <sys/types.h> |
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|
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#include "console.h" |
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#include "emul.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "misc.h" |
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|
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|
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extern char *progname; |
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extern int verbose; |
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|
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|
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static struct termios console_oldtermios; |
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static struct termios console_curtermios; |
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|
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/* For 'slave' mode: */ |
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static struct termios console_slave_tios; |
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static int console_slave_outputd; |
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|
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static int console_initialized = 0; |
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static int console_stdout_pending; |
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|
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#define CONSOLE_FIFO_LEN 4096 |
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|
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/* Mouse coordinates: */ |
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static int console_framebuffer_mouse_x; /* absolute x, 0-based */ |
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static int console_framebuffer_mouse_y; /* absolute y, 0-based */ |
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static int console_framebuffer_mouse_fb_nr; /* fb_number of last |
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framebuffer cursor update */ |
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|
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static int console_mouse_x; /* absolute x, 0-based */ |
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static int console_mouse_y; /* absolute y, 0-based */ |
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static int console_mouse_fb_nr; /* framebuffer number of |
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host movement, 0-based */ |
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static int console_mouse_buttons; /* left=4, middle=2, right=1 */ |
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|
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static int allow_slaves = 0; |
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|
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struct console_handle { |
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int in_use; |
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int in_use_for_input; |
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int using_xterm; |
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int inputonly; |
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int outputonly; |
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int warning_printed; |
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|
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char *machine_name; |
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char *name; |
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|
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int w_descriptor; |
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int r_descriptor; |
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|
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unsigned char fifo[CONSOLE_FIFO_LEN]; |
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int fifo_head; |
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int fifo_tail; |
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}; |
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|
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#define NOT_USING_XTERM 0 |
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#define USING_XTERM_BUT_NOT_YET_OPEN 1 |
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#define USING_XTERM 2 |
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|
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/* A simple array of console_handles */ |
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static struct console_handle *console_handles = NULL; |
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static int n_console_handles = 0; |
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|
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|
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/* |
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* console_deinit(): |
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* |
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* Restore host's console settings. |
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*/ |
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void console_deinit(void) |
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{ |
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if (!console_initialized) |
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return; |
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|
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tcsetattr(STDIN_FILENO, TCSANOW, &console_oldtermios); |
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|
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console_initialized = 0; |
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} |
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|
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|
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/* |
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* console_sigcont(): |
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* |
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* If the user presses CTRL-Z (to stop the emulator process) and then |
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* continues, we have to make sure that the right termios settings are |
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* active. (This should be set as the SIGCONT signal handler in src/emul.c.) |
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*/ |
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void console_sigcont(int x) |
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{ |
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if (!console_initialized) |
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return; |
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|
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/* Make sure our 'current' termios setting is active: */ |
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tcsetattr(STDIN_FILENO, TCSANOW, &console_curtermios); |
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|
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/* Reset the signal handler: */ |
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signal(SIGCONT, console_sigcont); |
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} |
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|
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|
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/* |
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* start_xterm(): |
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* |
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* When using X11 (well, when allow_slaves is set), this routine tries to |
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* start up an xterm, with another copy of gxemul inside. The other gxemul |
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* copy is given arguments that will cause it to run console_slave(). |
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* |
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* TODO: This is ugly and hardcoded. Clean it up. |
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*/ |
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static void start_xterm(int handle) |
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{ |
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int filedes[2]; |
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int filedesB[2]; |
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int res; |
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size_t mlen; |
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char **a; |
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pid_t p; |
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|
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res = pipe(filedes); |
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if (res) { |
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printf("[ start_xterm(): pipe(): %i ]\n", errno); |
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exit(1); |
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} |
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|
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res = pipe(filedesB); |
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if (res) { |
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printf("[ start_xterm(): pipe(): %i ]\n", errno); |
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exit(1); |
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} |
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|
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/* printf("filedes = %i,%i\n", filedes[0], filedes[1]); */ |
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/* printf("filedesB = %i,%i\n", filedesB[0], filedesB[1]); */ |
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|
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/* NOTE/warning: Hardcoded max nr of args! */ |
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a = malloc(sizeof(char *) * 20); |
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if (a == NULL) { |
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fprintf(stderr, "start_xterm(): out of memory\n"); |
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exit(1); |
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} |
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|
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a[0] = getenv("XTERM"); |
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if (a[0] == NULL) |
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a[0] = "xterm"; |
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a[1] = "-geometry"; |
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a[2] = "80x25"; |
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a[3] = "-title"; |
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mlen = strlen(console_handles[handle].name) + |
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strlen(console_handles[handle].machine_name) + 30; |
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a[4] = malloc(mlen); |
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snprintf(a[4], mlen, "GXemul: %s %s", |
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console_handles[handle].machine_name, |
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console_handles[handle].name); |
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a[5] = "-e"; |
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a[6] = progname; |
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a[7] = malloc(80); |
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snprintf(a[7], 80, "-WW@S%i,%i", filedes[0], filedesB[1]); |
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a[8] = NULL; |
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|
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p = fork(); |
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if (p == -1) { |
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printf("[ start_xterm(): ERROR while trying to " |
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"fork(): %i ]\n", errno); |
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exit(1); |
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} else if (p == 0) { |
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close(filedes[1]); |
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close(filedesB[0]); |
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|
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p = setsid(); |
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if (p < 0) |
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printf("[ start_xterm(): ERROR while trying " |
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"to do a setsid(): %i ]\n", errno); |
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|
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res = execvp(a[0], a); |
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printf("[ start_xterm(): ERROR while trying to " |
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"execvp(\""); |
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while (a[0] != NULL) { |
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printf("%s", a[0]); |
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if (a[1] != NULL) |
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printf(" "); |
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a++; |
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} |
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printf("\"): %i ]\n", errno); |
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if (errno == ENOENT) |
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printf("[ Most probably you don't have xterm" |
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" in your PATH. Try again. ]\n"); |
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exit(1); |
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} |
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|
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/* TODO: free a and a[*] */ |
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|
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close(filedes[0]); |
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close(filedesB[1]); |
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|
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console_handles[handle].using_xterm = USING_XTERM; |
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|
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/* |
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* write to filedes[1], read from filedesB[0] |
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*/ |
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|
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console_handles[handle].w_descriptor = filedes[1]; |
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console_handles[handle].r_descriptor = filedesB[0]; |
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} |
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|
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|
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/* |
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* d_avail(): |
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* |
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* Returns 1 if anything is available on a descriptor. |
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*/ |
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static int d_avail(int d) |
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{ |
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fd_set rfds; |
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struct timeval tv; |
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|
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FD_ZERO(&rfds); |
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FD_SET(d, &rfds); |
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tv.tv_sec = 0; |
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tv.tv_usec = 0; |
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return select(d+1, &rfds, NULL, NULL, &tv); |
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} |
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|
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|
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/* |
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* console_makeavail(): |
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* |
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* Put a character in the queue, so that it will be avaiable, |
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* by inserting it into the char fifo. |
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*/ |
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void console_makeavail(int handle, char ch) |
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{ |
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console_handles[handle].fifo[ |
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console_handles[handle].fifo_head] = ch; |
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console_handles[handle].fifo_head = ( |
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console_handles[handle].fifo_head + 1) % CONSOLE_FIFO_LEN; |
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|
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if (console_handles[handle].fifo_head == |
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console_handles[handle].fifo_tail) |
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fatal("[ WARNING: console fifo overrun, handle %i ]\n", handle); |
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} |
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|
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|
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/* |
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* console_stdin_avail(): |
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* |
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* Returns 1 if a char is available from a handle's read descriptor, |
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* 0 otherwise. |
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*/ |
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static int console_stdin_avail(int handle) |
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{ |
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if (!console_handles[handle].in_use_for_input) |
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return 0; |
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|
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if (!allow_slaves) |
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return d_avail(STDIN_FILENO); |
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|
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if (console_handles[handle].using_xterm == |
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USING_XTERM_BUT_NOT_YET_OPEN) |
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return 0; |
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|
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return d_avail(console_handles[handle].r_descriptor); |
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} |
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|
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|
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/* |
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* console_charavail(): |
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* |
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* Returns 1 if a char is available in the fifo, 0 otherwise. |
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*/ |
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int console_charavail(int handle) |
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{ |
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while (console_stdin_avail(handle)) { |
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unsigned char ch[100]; /* = getchar(); */ |
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ssize_t len; |
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int i, d; |
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|
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if (!allow_slaves) |
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d = STDIN_FILENO; |
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else |
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d = console_handles[handle].r_descriptor; |
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|
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len = read(d, ch, sizeof(ch)); |
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|
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for (i=0; i<len; i++) { |
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/* printf("[ %i: %i ]\n", i, ch[i]); */ |
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|
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if (!allow_slaves) { |
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/* Ugly hack: convert ctrl-b into ctrl-c. |
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(TODO: fix) */ |
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if (ch[i] == 2) |
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ch[i] = 3; |
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} |
366 |
|
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console_makeavail(handle, ch[i]); |
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} |
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} |
370 |
|
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if (console_handles[handle].fifo_head == |
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console_handles[handle].fifo_tail) |
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return 0; |
374 |
|
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return 1; |
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} |
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|
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|
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/* |
380 |
* console_readchar(): |
381 |
* |
382 |
* Returns 0..255 if a char was available, -1 otherwise. |
383 |
*/ |
384 |
int console_readchar(int handle) |
385 |
{ |
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int ch; |
387 |
|
388 |
if (!console_charavail(handle)) |
389 |
return -1; |
390 |
|
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ch = console_handles[handle].fifo[console_handles[handle].fifo_tail]; |
392 |
console_handles[handle].fifo_tail ++; |
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console_handles[handle].fifo_tail %= CONSOLE_FIFO_LEN; |
394 |
|
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return ch; |
396 |
} |
397 |
|
398 |
|
399 |
/* |
400 |
* console_putchar(): |
401 |
* |
402 |
* Prints a char to stdout, and sets the console_stdout_pending flag. |
403 |
*/ |
404 |
void console_putchar(int handle, int ch) |
405 |
{ |
406 |
char buf[1]; |
407 |
|
408 |
if (!console_handles[handle].in_use_for_input && |
409 |
!console_handles[handle].outputonly) |
410 |
console_change_inputability(handle, 1); |
411 |
|
412 |
if (!allow_slaves) { |
413 |
/* stdout: */ |
414 |
putchar(ch); |
415 |
|
416 |
/* Assume flushes by OS or libc on newlines: */ |
417 |
if (ch == '\n') |
418 |
console_stdout_pending = 0; |
419 |
else |
420 |
console_stdout_pending = 1; |
421 |
|
422 |
return; |
423 |
} |
424 |
|
425 |
if (!console_handles[handle].in_use) { |
426 |
printf("[ console_putchar(): handle %i not in" |
427 |
" use! ]\n", handle); |
428 |
return; |
429 |
} |
430 |
|
431 |
if (console_handles[handle].using_xterm == |
432 |
USING_XTERM_BUT_NOT_YET_OPEN) |
433 |
start_xterm(handle); |
434 |
|
435 |
buf[0] = ch; |
436 |
write(console_handles[handle].w_descriptor, buf, 1); |
437 |
} |
438 |
|
439 |
|
440 |
/* |
441 |
* console_flush(): |
442 |
* |
443 |
* Flushes stdout, if necessary, and resets console_stdout_pending to zero. |
444 |
*/ |
445 |
void console_flush(void) |
446 |
{ |
447 |
if (console_stdout_pending) |
448 |
fflush(stdout); |
449 |
|
450 |
console_stdout_pending = 0; |
451 |
} |
452 |
|
453 |
|
454 |
/* |
455 |
* console_mouse_coordinates(): |
456 |
* |
457 |
* Sets mouse coordinates. Called by for example an X11 event handler. |
458 |
* x and y are absolute coordinates, fb_nr is where the mouse movement |
459 |
* took place. |
460 |
*/ |
461 |
void console_mouse_coordinates(int x, int y, int fb_nr) |
462 |
{ |
463 |
/* TODO: fb_nr isn't used yet. */ |
464 |
|
465 |
console_mouse_x = x; |
466 |
console_mouse_y = y; |
467 |
console_mouse_fb_nr = fb_nr; |
468 |
} |
469 |
|
470 |
|
471 |
/* |
472 |
* console_mouse_button(): |
473 |
* |
474 |
* Sets a mouse button to be pressed or released. Called by for example an |
475 |
* X11 event handler. button is 1 (left), 2 (middle), or 3 (right), and |
476 |
* pressed = 1 for pressed, 0 for not pressed. |
477 |
*/ |
478 |
void console_mouse_button(int button, int pressed) |
479 |
{ |
480 |
int mask = 1 << (3-button); |
481 |
|
482 |
if (pressed) |
483 |
console_mouse_buttons |= mask; |
484 |
else |
485 |
console_mouse_buttons &= ~mask; |
486 |
} |
487 |
|
488 |
|
489 |
/* |
490 |
* console_get_framebuffer_mouse(): |
491 |
* |
492 |
* TODO: Comment |
493 |
*/ |
494 |
void console_get_framebuffer_mouse(int *x, int *y, int *fb_nr) |
495 |
{ |
496 |
*x = console_framebuffer_mouse_x; |
497 |
*y = console_framebuffer_mouse_y; |
498 |
*fb_nr = console_framebuffer_mouse_fb_nr; |
499 |
} |
500 |
|
501 |
|
502 |
/* |
503 |
* console_set_framebuffer_mouse(): |
504 |
* |
505 |
* A framebuffer device calls this function when it sets the |
506 |
* position of a cursor (ie a mouse cursor). |
507 |
*/ |
508 |
void console_set_framebuffer_mouse(int x, int y, int fb_nr) |
509 |
{ |
510 |
console_framebuffer_mouse_x = x; |
511 |
console_framebuffer_mouse_y = y; |
512 |
console_framebuffer_mouse_fb_nr = fb_nr; |
513 |
} |
514 |
|
515 |
|
516 |
/* |
517 |
* console_getmouse(): |
518 |
* |
519 |
* Puts current mouse data into the variables pointed to by |
520 |
* the arguments. |
521 |
*/ |
522 |
void console_getmouse(int *x, int *y, int *buttons, int *fb_nr) |
523 |
{ |
524 |
*x = console_mouse_x; |
525 |
*y = console_mouse_y; |
526 |
*buttons = console_mouse_buttons; |
527 |
*fb_nr = console_mouse_fb_nr; |
528 |
} |
529 |
|
530 |
|
531 |
/* |
532 |
* console_slave_sigint(): |
533 |
*/ |
534 |
static void console_slave_sigint(int x) |
535 |
{ |
536 |
char buf[1]; |
537 |
|
538 |
/* Send a ctrl-c: */ |
539 |
buf[0] = 3; |
540 |
write(console_slave_outputd, buf, sizeof(buf)); |
541 |
|
542 |
/* Reset the signal handler: */ |
543 |
signal(SIGINT, console_slave_sigint); |
544 |
} |
545 |
|
546 |
|
547 |
/* |
548 |
* console_slave_sigcont(): |
549 |
* |
550 |
* See comment for console_sigcont. This is for used by console_slave(). |
551 |
*/ |
552 |
static void console_slave_sigcont(int x) |
553 |
{ |
554 |
/* Make sure our 'current' termios setting is active: */ |
555 |
tcsetattr(STDIN_FILENO, TCSANOW, &console_slave_tios); |
556 |
|
557 |
/* Reset the signal handler: */ |
558 |
signal(SIGCONT, console_slave_sigcont); |
559 |
} |
560 |
|
561 |
|
562 |
/* |
563 |
* console_slave(): |
564 |
* |
565 |
* This function is used when running with X11, and gxemul opens up |
566 |
* separate xterms for each emulated terminal or serial port. |
567 |
*/ |
568 |
void console_slave(char *arg) |
569 |
{ |
570 |
int inputd; |
571 |
int len; |
572 |
char *p; |
573 |
char buf[400]; |
574 |
|
575 |
/* arg = '3,6' or similar, input and output descriptors */ |
576 |
/* printf("console_slave(): arg = '%s'\n", arg); */ |
577 |
|
578 |
inputd = atoi(arg); |
579 |
p = strchr(arg, ','); |
580 |
if (p == NULL) { |
581 |
printf("console_slave(): bad arg '%s'\n", arg); |
582 |
sleep(5); |
583 |
exit(1); |
584 |
} |
585 |
console_slave_outputd = atoi(p+1); |
586 |
|
587 |
/* Set the terminal to raw mode: */ |
588 |
tcgetattr(STDIN_FILENO, &console_slave_tios); |
589 |
|
590 |
console_slave_tios.c_lflag &= ~ICANON; |
591 |
console_slave_tios.c_cc[VTIME] = 0; |
592 |
console_slave_tios.c_cc[VMIN] = 1; |
593 |
console_slave_tios.c_lflag &= ~ECHO; |
594 |
console_slave_tios.c_iflag &= ~ICRNL; |
595 |
tcsetattr(STDIN_FILENO, TCSANOW, &console_slave_tios); |
596 |
|
597 |
signal(SIGINT, console_slave_sigint); |
598 |
signal(SIGCONT, console_slave_sigcont); |
599 |
|
600 |
for (;;) { |
601 |
/* TODO: select() on both inputd and stdin */ |
602 |
|
603 |
if (d_avail(inputd)) { |
604 |
len = read(inputd, buf, sizeof(buf) - 1); |
605 |
if (len < 1) |
606 |
exit(0); |
607 |
buf[len] = '\0'; |
608 |
printf("%s", buf); |
609 |
fflush(stdout); |
610 |
} |
611 |
|
612 |
if (d_avail(STDIN_FILENO)) { |
613 |
len = read(STDIN_FILENO, buf, sizeof(buf)); |
614 |
if (len < 1) |
615 |
exit(0); |
616 |
write(console_slave_outputd, buf, len); |
617 |
} |
618 |
|
619 |
usleep(100); |
620 |
} |
621 |
} |
622 |
|
623 |
|
624 |
/* |
625 |
* console_new_handle(): |
626 |
* |
627 |
* Allocates a new console_handle struct, and returns a pointer to it. |
628 |
* |
629 |
* For internal use. |
630 |
*/ |
631 |
static struct console_handle *console_new_handle(char *name, int *handlep) |
632 |
{ |
633 |
struct console_handle *chp; |
634 |
int i, n, found_free = -1; |
635 |
|
636 |
/* Reuse an old slot, if possible: */ |
637 |
n = n_console_handles; |
638 |
for (i=0; i<n; i++) |
639 |
if (!console_handles[i].in_use) { |
640 |
found_free = i; |
641 |
break; |
642 |
} |
643 |
|
644 |
if (found_free == -1) { |
645 |
/* Let's realloc console_handles[], to make room |
646 |
for the new one: */ |
647 |
console_handles = realloc(console_handles, sizeof( |
648 |
struct console_handle) * (n_console_handles + 1)); |
649 |
if (console_handles == NULL) { |
650 |
printf("console_new_handle(): out of memory\n"); |
651 |
exit(1); |
652 |
} |
653 |
found_free = n_console_handles; |
654 |
n_console_handles ++; |
655 |
} |
656 |
|
657 |
chp = &console_handles[found_free]; |
658 |
memset(chp, 0, sizeof(struct console_handle)); |
659 |
|
660 |
chp->in_use = 1; |
661 |
chp->machine_name = ""; |
662 |
chp->name = strdup(name); |
663 |
if (chp->name == NULL) { |
664 |
printf("console_new_handle(): out of memory\n"); |
665 |
exit(1); |
666 |
} |
667 |
|
668 |
*handlep = found_free; |
669 |
return chp; |
670 |
} |
671 |
|
672 |
|
673 |
/* |
674 |
* console_start_slave(): |
675 |
* |
676 |
* When using X11: |
677 |
* |
678 |
* This routine tries to start up an xterm, with another copy of gxemul |
679 |
* inside. The other gxemul copy is given arguments that will cause it |
680 |
* to run console_slave(). |
681 |
* |
682 |
* When not using X11: Things will seem to work the same way without X11, |
683 |
* but no xterm will actually be started. |
684 |
* |
685 |
* consolename should be something like "serial 0". |
686 |
* |
687 |
* If use_for_input is 1, input is allowed right from the start. (This |
688 |
* can be upgraded later from 0 to 1 using the console_change_inputability() |
689 |
* function.) |
690 |
* |
691 |
* If use_for_input is CONSOLE_OUTPUT_ONLY, then this is an output-only stream. |
692 |
* |
693 |
* On success, an integer >= 0 is returned. This can then be used as a |
694 |
* 'handle' when writing to or reading from an emulated console. |
695 |
* |
696 |
* On failure, -1 is returned. |
697 |
*/ |
698 |
int console_start_slave(struct machine *machine, char *consolename, |
699 |
int use_for_input) |
700 |
{ |
701 |
struct console_handle *chp; |
702 |
int handle; |
703 |
|
704 |
if (machine == NULL || consolename == NULL) { |
705 |
printf("console_start_slave(): NULL ptr\n"); |
706 |
exit(1); |
707 |
} |
708 |
|
709 |
chp = console_new_handle(consolename, &handle); |
710 |
chp->in_use_for_input = use_for_input; |
711 |
if (use_for_input == CONSOLE_OUTPUT_ONLY) { |
712 |
chp->outputonly = 1; |
713 |
chp->in_use_for_input = 0; |
714 |
} |
715 |
chp->machine_name = strdup(machine->machine_name); |
716 |
chp->name = strdup(consolename); |
717 |
|
718 |
if (allow_slaves) |
719 |
chp->using_xterm = USING_XTERM_BUT_NOT_YET_OPEN; |
720 |
|
721 |
return handle; |
722 |
} |
723 |
|
724 |
|
725 |
/* |
726 |
* console_start_slave_inputonly(): |
727 |
* |
728 |
* Similar to console_start_slave(), but doesn't open an xterm. This is |
729 |
* useful for devices such as keyboard controllers, that need to have an |
730 |
* input queue, but no xterm window associated with it. |
731 |
* |
732 |
* On success, an integer >= 0 is returned. This can then be used as a |
733 |
* 'handle' when writing to or reading from an emulated console. |
734 |
* |
735 |
* On failure, -1 is returned. |
736 |
*/ |
737 |
int console_start_slave_inputonly(struct machine *machine, char *consolename, |
738 |
int use_for_input) |
739 |
{ |
740 |
struct console_handle *chp; |
741 |
int handle; |
742 |
|
743 |
if (machine == NULL || consolename == NULL) { |
744 |
printf("console_start_slave(): NULL ptr\n"); |
745 |
exit(1); |
746 |
} |
747 |
|
748 |
chp = console_new_handle(consolename, &handle); |
749 |
chp->inputonly = 1; |
750 |
chp->in_use_for_input = use_for_input; |
751 |
chp->machine_name = strdup(machine->name); |
752 |
chp->name = strdup(consolename); |
753 |
|
754 |
return handle; |
755 |
} |
756 |
|
757 |
|
758 |
/* |
759 |
* console_change_inputability(): |
760 |
* |
761 |
* Sets whether or not a console handle can be used for input. Return value |
762 |
* is 1 if the change took place, 0 otherwise. |
763 |
*/ |
764 |
int console_change_inputability(int handle, int inputability) |
765 |
{ |
766 |
int old; |
767 |
|
768 |
if (handle < 0 || handle >= n_console_handles) { |
769 |
fatal("console_change_inputability(): bad handle %i\n", |
770 |
handle); |
771 |
exit(1); |
772 |
} |
773 |
|
774 |
old = console_handles[handle].in_use_for_input; |
775 |
console_handles[handle].in_use_for_input = inputability; |
776 |
|
777 |
if (inputability != 0) { |
778 |
if (console_warn_if_slaves_are_needed(0)) { |
779 |
console_handles[handle].in_use_for_input = old; |
780 |
if (!console_handles[handle].warning_printed) { |
781 |
fatal("%%\n%% WARNING! Input to console ha" |
782 |
"ndle \"%s\" wasn't enabled,\n%% because " |
783 |
"it", console_handles[handle].name); |
784 |
fatal(" would interfere with other inputs,\n" |
785 |
"%% and you did not use the -x command " |
786 |
"line option!\n%%\n"); |
787 |
} |
788 |
console_handles[handle].warning_printed = 1; |
789 |
return 0; |
790 |
} |
791 |
} |
792 |
|
793 |
return 1; |
794 |
} |
795 |
|
796 |
|
797 |
/* |
798 |
* console_init_main(): |
799 |
* |
800 |
* Puts the host's console into single-character (non-canonical) mode. |
801 |
*/ |
802 |
void console_init_main(struct emul *emul) |
803 |
{ |
804 |
int i, tra; |
805 |
|
806 |
if (console_initialized) |
807 |
return; |
808 |
|
809 |
tcgetattr(STDIN_FILENO, &console_oldtermios); |
810 |
memcpy(&console_curtermios, &console_oldtermios, |
811 |
sizeof (struct termios)); |
812 |
|
813 |
console_curtermios.c_lflag &= ~ICANON; |
814 |
console_curtermios.c_cc[VTIME] = 0; |
815 |
console_curtermios.c_cc[VMIN] = 1; |
816 |
|
817 |
console_curtermios.c_lflag &= ~ECHO; |
818 |
|
819 |
/* |
820 |
* Most guest OSes seem to work ok without ~ICRNL, but Linux on |
821 |
* DECstation requires it to be usable. Unfortunately, clearing |
822 |
* out ICRNL makes tracing with '-t ... |more' akward, as you |
823 |
* might need to use CTRL-J instead of the enter key. Hence, |
824 |
* this bit is only cleared if we're not tracing: |
825 |
*/ |
826 |
tra = 0; |
827 |
for (i=0; i<emul->n_machines; i++) |
828 |
if (emul->machines[i]->show_trace_tree || |
829 |
emul->machines[i]->instruction_trace || |
830 |
emul->machines[i]->register_dump) |
831 |
tra = 1; |
832 |
if (!tra) |
833 |
console_curtermios.c_iflag &= ~ICRNL; |
834 |
|
835 |
tcsetattr(STDIN_FILENO, TCSANOW, &console_curtermios); |
836 |
|
837 |
console_stdout_pending = 1; |
838 |
console_handles[MAIN_CONSOLE].fifo_head = 0; |
839 |
console_handles[MAIN_CONSOLE].fifo_tail = 0; |
840 |
|
841 |
console_mouse_x = 0; |
842 |
console_mouse_y = 0; |
843 |
console_mouse_buttons = 0; |
844 |
|
845 |
console_initialized = 1; |
846 |
} |
847 |
|
848 |
|
849 |
/* |
850 |
* console_debug_dump(): |
851 |
* |
852 |
* Dump debug info, if verbose >= 2. |
853 |
*/ |
854 |
void console_debug_dump(struct machine *machine) |
855 |
{ |
856 |
int i, iadd = DEBUG_INDENTATION, listed_main = 0; |
857 |
|
858 |
if (verbose < 2) |
859 |
return; |
860 |
|
861 |
debug("console slaves (xterms): %s\n", allow_slaves? |
862 |
"yes" : "no"); |
863 |
|
864 |
debug("console handles:\n"); |
865 |
debug_indentation(iadd); |
866 |
|
867 |
for (i=0; i<n_console_handles; i++) { |
868 |
if (!console_handles[i].in_use) |
869 |
continue; |
870 |
debug("%i: \"%s\"", i, console_handles[i].name); |
871 |
if (console_handles[i].using_xterm) |
872 |
debug(" [xterm]"); |
873 |
if (console_handles[i].inputonly) |
874 |
debug(" [inputonly]"); |
875 |
if (console_handles[i].outputonly) |
876 |
debug(" [outputonly]"); |
877 |
if (i == machine->main_console_handle) { |
878 |
debug(" [MAIN CONSOLE]"); |
879 |
listed_main = 1; |
880 |
} |
881 |
debug("\n"); |
882 |
} |
883 |
|
884 |
debug_indentation(-iadd); |
885 |
|
886 |
if (!listed_main) |
887 |
fatal("WARNING! no main console handle?\n"); |
888 |
} |
889 |
|
890 |
|
891 |
/* |
892 |
* console_allow_slaves(): |
893 |
* |
894 |
* This function tells the console subsystem whether or not to open up |
895 |
* slave xterms for each emulated serial controller. |
896 |
*/ |
897 |
void console_allow_slaves(int allow) |
898 |
{ |
899 |
allow_slaves = allow; |
900 |
} |
901 |
|
902 |
|
903 |
/* |
904 |
* console_are_slaves_allowed(): |
905 |
* |
906 |
* Returns the value of allow_slaves. |
907 |
*/ |
908 |
int console_are_slaves_allowed(void) |
909 |
{ |
910 |
return allow_slaves; |
911 |
} |
912 |
|
913 |
|
914 |
/* |
915 |
* console_warn_if_slaves_are_needed(): |
916 |
* |
917 |
* Prints an error (during startup of the emulator) if slave xterms are needed |
918 |
* (i.e. there is more than one console handle in use which is used for |
919 |
* INPUT), but they are not currently allowed. |
920 |
* |
921 |
* This function should be called during startup (with init = 1), and every |
922 |
* time a console handle changes/upgrades its in_use_for_input from 0 to 1. |
923 |
* |
924 |
* If init is non-zero, this function doesn't return if there was a warning. |
925 |
* |
926 |
* If init is zero, no warning is printed. 1 is returned if there were more |
927 |
* than one input, 0 otherwise. |
928 |
*/ |
929 |
int console_warn_if_slaves_are_needed(int init) |
930 |
{ |
931 |
int i, n = 0; |
932 |
|
933 |
if (allow_slaves) |
934 |
return 0; |
935 |
|
936 |
for (i=MAIN_CONSOLE+1; i<n_console_handles; i++) |
937 |
if (console_handles[i].in_use && |
938 |
console_handles[i].in_use_for_input && |
939 |
!console_handles[i].using_xterm) |
940 |
n ++; |
941 |
|
942 |
if (n > 1) { |
943 |
if (init) { |
944 |
fatal("#\n# ERROR! More than one console input is " |
945 |
"in use,\n# but xterm slaves are not enabled.\n" |
946 |
"#\n"); |
947 |
fatal("# Use -x to enable slave xterms.)\n#\n"); |
948 |
for (i=MAIN_CONSOLE+1; i<n_console_handles; i++) |
949 |
if (console_handles[i].in_use && |
950 |
console_handles[i].in_use_for_input && |
951 |
!console_handles[i].using_xterm) |
952 |
fatal("# console handle %i: '%s'\n", |
953 |
i, console_handles[i].name); |
954 |
fatal("#\n"); |
955 |
exit(1); |
956 |
} |
957 |
return 1; |
958 |
} |
959 |
|
960 |
return 0; |
961 |
} |
962 |
|
963 |
|
964 |
/* |
965 |
* console_init(): |
966 |
* |
967 |
* This function should be called before any other console_*() function |
968 |
* is used. |
969 |
*/ |
970 |
void console_init(void) |
971 |
{ |
972 |
int handle; |
973 |
struct console_handle *chp; |
974 |
|
975 |
chp = console_new_handle("MAIN", &handle); |
976 |
if (handle != MAIN_CONSOLE) { |
977 |
printf("console_init(): fatal error: could not create" |
978 |
" console 0: handle = %i\n", handle); |
979 |
exit(1); |
980 |
} |
981 |
|
982 |
chp->in_use_for_input = 1; |
983 |
} |
984 |
|