| 1 | /* Generic serial interface routines |
| 2 | |
| 3 | Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
| 4 | 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| 5 | Free Software Foundation, Inc. |
| 6 | |
| 7 | This file is part of GDB. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 3 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include <ctype.h> |
| 24 | #include "serial.h" |
| 25 | #include "gdb_string.h" |
| 26 | #include "gdbcmd.h" |
| 27 | |
| 28 | extern void _initialize_serial (void); |
| 29 | |
| 30 | /* Is serial being debugged? */ |
| 31 | |
| 32 | static int global_serial_debug_p; |
| 33 | |
| 34 | /* Linked list of serial I/O handlers. */ |
| 35 | |
| 36 | static struct serial_ops *serial_ops_list = NULL; |
| 37 | |
| 38 | /* This is the last serial stream opened. Used by connect command. */ |
| 39 | |
| 40 | static struct serial *last_serial_opened = NULL; |
| 41 | |
| 42 | /* Pointer to list of scb's. */ |
| 43 | |
| 44 | static struct serial *scb_base; |
| 45 | |
| 46 | /* Non-NULL gives filename which contains a recording of the remote session, |
| 47 | suitable for playback by gdbserver. */ |
| 48 | |
| 49 | static char *serial_logfile = NULL; |
| 50 | static struct ui_file *serial_logfp = NULL; |
| 51 | |
| 52 | static struct serial_ops *serial_interface_lookup (const char *); |
| 53 | static void serial_logchar (struct ui_file *stream, |
| 54 | int ch_type, int ch, int timeout); |
| 55 | static const char logbase_hex[] = "hex"; |
| 56 | static const char logbase_octal[] = "octal"; |
| 57 | static const char logbase_ascii[] = "ascii"; |
| 58 | static const char *logbase_enums[] = |
| 59 | {logbase_hex, logbase_octal, logbase_ascii, NULL}; |
| 60 | static const char *serial_logbase = logbase_ascii; |
| 61 | \f |
| 62 | |
| 63 | static int serial_current_type = 0; |
| 64 | |
| 65 | /* Log char CH of type CHTYPE, with TIMEOUT. */ |
| 66 | |
| 67 | /* Define bogus char to represent a BREAK. Should be careful to choose a value |
| 68 | that can't be confused with a normal char, or an error code. */ |
| 69 | #define SERIAL_BREAK 1235 |
| 70 | |
| 71 | static void |
| 72 | serial_logchar (struct ui_file *stream, int ch_type, int ch, int timeout) |
| 73 | { |
| 74 | if (ch_type != serial_current_type) |
| 75 | { |
| 76 | fprintf_unfiltered (stream, "\n%c ", ch_type); |
| 77 | serial_current_type = ch_type; |
| 78 | } |
| 79 | |
| 80 | if (serial_logbase != logbase_ascii) |
| 81 | fputc_unfiltered (' ', stream); |
| 82 | |
| 83 | switch (ch) |
| 84 | { |
| 85 | case SERIAL_TIMEOUT: |
| 86 | fprintf_unfiltered (stream, "<Timeout: %d seconds>", timeout); |
| 87 | return; |
| 88 | case SERIAL_ERROR: |
| 89 | fprintf_unfiltered (stream, "<Error: %s>", safe_strerror (errno)); |
| 90 | return; |
| 91 | case SERIAL_EOF: |
| 92 | fputs_unfiltered ("<Eof>", stream); |
| 93 | return; |
| 94 | case SERIAL_BREAK: |
| 95 | fputs_unfiltered ("<Break>", stream); |
| 96 | return; |
| 97 | default: |
| 98 | if (serial_logbase == logbase_hex) |
| 99 | fprintf_unfiltered (stream, "%02x", ch & 0xff); |
| 100 | else if (serial_logbase == logbase_octal) |
| 101 | fprintf_unfiltered (stream, "%03o", ch & 0xff); |
| 102 | else |
| 103 | switch (ch) |
| 104 | { |
| 105 | case '\\': |
| 106 | fputs_unfiltered ("\\\\", stream); |
| 107 | break; |
| 108 | case '\b': |
| 109 | fputs_unfiltered ("\\b", stream); |
| 110 | break; |
| 111 | case '\f': |
| 112 | fputs_unfiltered ("\\f", stream); |
| 113 | break; |
| 114 | case '\n': |
| 115 | fputs_unfiltered ("\\n", stream); |
| 116 | break; |
| 117 | case '\r': |
| 118 | fputs_unfiltered ("\\r", stream); |
| 119 | break; |
| 120 | case '\t': |
| 121 | fputs_unfiltered ("\\t", stream); |
| 122 | break; |
| 123 | case '\v': |
| 124 | fputs_unfiltered ("\\v", stream); |
| 125 | break; |
| 126 | default: |
| 127 | fprintf_unfiltered (stream, |
| 128 | isprint (ch) ? "%c" : "\\x%02x", ch & 0xFF); |
| 129 | break; |
| 130 | } |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | void |
| 135 | serial_log_command (const char *cmd) |
| 136 | { |
| 137 | if (!serial_logfp) |
| 138 | return; |
| 139 | |
| 140 | serial_current_type = 'c'; |
| 141 | |
| 142 | fputs_unfiltered ("\nc ", serial_logfp); |
| 143 | fputs_unfiltered (cmd, serial_logfp); |
| 144 | |
| 145 | /* Make sure that the log file is as up-to-date as possible, |
| 146 | in case we are getting ready to dump core or something. */ |
| 147 | gdb_flush (serial_logfp); |
| 148 | } |
| 149 | |
| 150 | \f |
| 151 | static struct serial_ops * |
| 152 | serial_interface_lookup (const char *name) |
| 153 | { |
| 154 | struct serial_ops *ops; |
| 155 | |
| 156 | for (ops = serial_ops_list; ops; ops = ops->next) |
| 157 | if (strcmp (name, ops->name) == 0) |
| 158 | return ops; |
| 159 | |
| 160 | return NULL; |
| 161 | } |
| 162 | |
| 163 | void |
| 164 | serial_add_interface (struct serial_ops *optable) |
| 165 | { |
| 166 | optable->next = serial_ops_list; |
| 167 | serial_ops_list = optable; |
| 168 | } |
| 169 | |
| 170 | /* Open up a device or a network socket, depending upon the syntax of NAME. */ |
| 171 | |
| 172 | struct serial * |
| 173 | serial_open (const char *name) |
| 174 | { |
| 175 | struct serial *scb; |
| 176 | struct serial_ops *ops; |
| 177 | const char *open_name = name; |
| 178 | |
| 179 | for (scb = scb_base; scb; scb = scb->next) |
| 180 | if (scb->name && strcmp (scb->name, name) == 0) |
| 181 | { |
| 182 | scb->refcnt++; |
| 183 | return scb; |
| 184 | } |
| 185 | |
| 186 | if (strcmp (name, "pc") == 0) |
| 187 | ops = serial_interface_lookup ("pc"); |
| 188 | else if (strncmp (name, "lpt", 3) == 0) |
| 189 | ops = serial_interface_lookup ("parallel"); |
| 190 | else if (strncmp (name, "|", 1) == 0) |
| 191 | { |
| 192 | ops = serial_interface_lookup ("pipe"); |
| 193 | /* Discard ``|'' and any space before the command itself. */ |
| 194 | ++open_name; |
| 195 | while (isspace (*open_name)) |
| 196 | ++open_name; |
| 197 | } |
| 198 | /* Check for a colon, suggesting an IP address/port pair. |
| 199 | Do this *after* checking for all the interesting prefixes. We |
| 200 | don't want to constrain the syntax of what can follow them. */ |
| 201 | else if (strchr (name, ':')) |
| 202 | ops = serial_interface_lookup ("tcp"); |
| 203 | else |
| 204 | ops = serial_interface_lookup ("hardwire"); |
| 205 | |
| 206 | if (!ops) |
| 207 | return NULL; |
| 208 | |
| 209 | scb = XMALLOC (struct serial); |
| 210 | |
| 211 | scb->ops = ops; |
| 212 | |
| 213 | scb->bufcnt = 0; |
| 214 | scb->bufp = scb->buf; |
| 215 | scb->error_fd = -1; |
| 216 | |
| 217 | /* `...->open (...)' would get expanded by the open(2) syscall macro. */ |
| 218 | if ((*scb->ops->open) (scb, open_name)) |
| 219 | { |
| 220 | xfree (scb); |
| 221 | return NULL; |
| 222 | } |
| 223 | |
| 224 | scb->name = xstrdup (name); |
| 225 | scb->next = scb_base; |
| 226 | scb->refcnt = 1; |
| 227 | scb->debug_p = 0; |
| 228 | scb->async_state = 0; |
| 229 | scb->async_handler = NULL; |
| 230 | scb->async_context = NULL; |
| 231 | scb_base = scb; |
| 232 | |
| 233 | last_serial_opened = scb; |
| 234 | |
| 235 | if (serial_logfile != NULL) |
| 236 | { |
| 237 | serial_logfp = gdb_fopen (serial_logfile, "w"); |
| 238 | if (serial_logfp == NULL) |
| 239 | perror_with_name (serial_logfile); |
| 240 | } |
| 241 | |
| 242 | return scb; |
| 243 | } |
| 244 | |
| 245 | /* Return the open serial device for FD, if found, or NULL if FD |
| 246 | is not already opened. */ |
| 247 | |
| 248 | struct serial * |
| 249 | serial_for_fd (int fd) |
| 250 | { |
| 251 | struct serial *scb; |
| 252 | |
| 253 | for (scb = scb_base; scb; scb = scb->next) |
| 254 | if (scb->fd == fd) |
| 255 | return scb; |
| 256 | |
| 257 | return NULL; |
| 258 | } |
| 259 | |
| 260 | /* Open a new serial stream using a file handle, using serial |
| 261 | interface ops OPS. */ |
| 262 | |
| 263 | static struct serial * |
| 264 | serial_fdopen_ops (const int fd, struct serial_ops *ops) |
| 265 | { |
| 266 | struct serial *scb; |
| 267 | |
| 268 | scb = serial_for_fd (fd); |
| 269 | if (scb) |
| 270 | { |
| 271 | scb->refcnt++; |
| 272 | return scb; |
| 273 | } |
| 274 | |
| 275 | if (!ops) |
| 276 | { |
| 277 | ops = serial_interface_lookup ("terminal"); |
| 278 | if (!ops) |
| 279 | ops = serial_interface_lookup ("hardwire"); |
| 280 | } |
| 281 | |
| 282 | if (!ops) |
| 283 | return NULL; |
| 284 | |
| 285 | scb = XCALLOC (1, struct serial); |
| 286 | |
| 287 | scb->ops = ops; |
| 288 | |
| 289 | scb->bufcnt = 0; |
| 290 | scb->bufp = scb->buf; |
| 291 | scb->error_fd = -1; |
| 292 | |
| 293 | scb->name = NULL; |
| 294 | scb->next = scb_base; |
| 295 | scb->refcnt = 1; |
| 296 | scb->debug_p = 0; |
| 297 | scb->async_state = 0; |
| 298 | scb->async_handler = NULL; |
| 299 | scb->async_context = NULL; |
| 300 | scb_base = scb; |
| 301 | |
| 302 | if ((ops->fdopen) != NULL) |
| 303 | (*ops->fdopen) (scb, fd); |
| 304 | else |
| 305 | scb->fd = fd; |
| 306 | |
| 307 | last_serial_opened = scb; |
| 308 | |
| 309 | return scb; |
| 310 | } |
| 311 | |
| 312 | struct serial * |
| 313 | serial_fdopen (const int fd) |
| 314 | { |
| 315 | return serial_fdopen_ops (fd, NULL); |
| 316 | } |
| 317 | |
| 318 | static void |
| 319 | do_serial_close (struct serial *scb, int really_close) |
| 320 | { |
| 321 | struct serial *tmp_scb; |
| 322 | |
| 323 | last_serial_opened = NULL; |
| 324 | |
| 325 | if (serial_logfp) |
| 326 | { |
| 327 | fputs_unfiltered ("\nEnd of log\n", serial_logfp); |
| 328 | serial_current_type = 0; |
| 329 | |
| 330 | /* XXX - What if serial_logfp == gdb_stdout or gdb_stderr? */ |
| 331 | ui_file_delete (serial_logfp); |
| 332 | serial_logfp = NULL; |
| 333 | } |
| 334 | |
| 335 | /* This is bogus. It's not our fault if you pass us a bad scb...! Rob, you |
| 336 | should fix your code instead. */ |
| 337 | |
| 338 | if (!scb) |
| 339 | return; |
| 340 | |
| 341 | scb->refcnt--; |
| 342 | if (scb->refcnt > 0) |
| 343 | return; |
| 344 | |
| 345 | /* ensure that the FD has been taken out of async mode. */ |
| 346 | if (scb->async_handler != NULL) |
| 347 | serial_async (scb, NULL, NULL); |
| 348 | |
| 349 | if (really_close) |
| 350 | scb->ops->close (scb); |
| 351 | |
| 352 | if (scb->name) |
| 353 | xfree (scb->name); |
| 354 | |
| 355 | if (scb_base == scb) |
| 356 | scb_base = scb_base->next; |
| 357 | else |
| 358 | for (tmp_scb = scb_base; tmp_scb; tmp_scb = tmp_scb->next) |
| 359 | { |
| 360 | if (tmp_scb->next != scb) |
| 361 | continue; |
| 362 | |
| 363 | tmp_scb->next = tmp_scb->next->next; |
| 364 | break; |
| 365 | } |
| 366 | |
| 367 | xfree (scb); |
| 368 | } |
| 369 | |
| 370 | void |
| 371 | serial_close (struct serial *scb) |
| 372 | { |
| 373 | do_serial_close (scb, 1); |
| 374 | } |
| 375 | |
| 376 | void |
| 377 | serial_un_fdopen (struct serial *scb) |
| 378 | { |
| 379 | do_serial_close (scb, 0); |
| 380 | } |
| 381 | |
| 382 | int |
| 383 | serial_readchar (struct serial *scb, int timeout) |
| 384 | { |
| 385 | int ch; |
| 386 | |
| 387 | /* FIXME: cagney/1999-10-11: Don't enable this check until the ASYNC |
| 388 | code is finished. */ |
| 389 | if (0 && serial_is_async_p (scb) && timeout < 0) |
| 390 | internal_error (__FILE__, __LINE__, |
| 391 | _("serial_readchar: blocking read in async mode")); |
| 392 | |
| 393 | ch = scb->ops->readchar (scb, timeout); |
| 394 | if (serial_logfp != NULL) |
| 395 | { |
| 396 | serial_logchar (serial_logfp, 'r', ch, timeout); |
| 397 | |
| 398 | /* Make sure that the log file is as up-to-date as possible, |
| 399 | in case we are getting ready to dump core or something. */ |
| 400 | gdb_flush (serial_logfp); |
| 401 | } |
| 402 | if (serial_debug_p (scb)) |
| 403 | { |
| 404 | fprintf_unfiltered (gdb_stdlog, "["); |
| 405 | serial_logchar (gdb_stdlog, 'r', ch, timeout); |
| 406 | fprintf_unfiltered (gdb_stdlog, "]"); |
| 407 | gdb_flush (gdb_stdlog); |
| 408 | } |
| 409 | |
| 410 | return (ch); |
| 411 | } |
| 412 | |
| 413 | int |
| 414 | serial_write (struct serial *scb, const char *str, int len) |
| 415 | { |
| 416 | if (serial_logfp != NULL) |
| 417 | { |
| 418 | int count; |
| 419 | |
| 420 | for (count = 0; count < len; count++) |
| 421 | serial_logchar (serial_logfp, 'w', str[count] & 0xff, 0); |
| 422 | |
| 423 | /* Make sure that the log file is as up-to-date as possible, |
| 424 | in case we are getting ready to dump core or something. */ |
| 425 | gdb_flush (serial_logfp); |
| 426 | } |
| 427 | if (serial_debug_p (scb)) |
| 428 | { |
| 429 | int count; |
| 430 | |
| 431 | for (count = 0; count < len; count++) |
| 432 | { |
| 433 | fprintf_unfiltered (gdb_stdlog, "["); |
| 434 | serial_logchar (gdb_stdlog, 'w', str[count] & 0xff, 0); |
| 435 | fprintf_unfiltered (gdb_stdlog, "]"); |
| 436 | } |
| 437 | gdb_flush (gdb_stdlog); |
| 438 | } |
| 439 | |
| 440 | return (scb->ops->write (scb, str, len)); |
| 441 | } |
| 442 | |
| 443 | void |
| 444 | serial_printf (struct serial *desc, const char *format,...) |
| 445 | { |
| 446 | va_list args; |
| 447 | char *buf; |
| 448 | va_start (args, format); |
| 449 | |
| 450 | buf = xstrvprintf (format, args); |
| 451 | serial_write (desc, buf, strlen (buf)); |
| 452 | |
| 453 | xfree (buf); |
| 454 | va_end (args); |
| 455 | } |
| 456 | |
| 457 | int |
| 458 | serial_drain_output (struct serial *scb) |
| 459 | { |
| 460 | return scb->ops->drain_output (scb); |
| 461 | } |
| 462 | |
| 463 | int |
| 464 | serial_flush_output (struct serial *scb) |
| 465 | { |
| 466 | return scb->ops->flush_output (scb); |
| 467 | } |
| 468 | |
| 469 | int |
| 470 | serial_flush_input (struct serial *scb) |
| 471 | { |
| 472 | return scb->ops->flush_input (scb); |
| 473 | } |
| 474 | |
| 475 | int |
| 476 | serial_send_break (struct serial *scb) |
| 477 | { |
| 478 | if (serial_logfp != NULL) |
| 479 | serial_logchar (serial_logfp, 'w', SERIAL_BREAK, 0); |
| 480 | |
| 481 | return (scb->ops->send_break (scb)); |
| 482 | } |
| 483 | |
| 484 | void |
| 485 | serial_raw (struct serial *scb) |
| 486 | { |
| 487 | scb->ops->go_raw (scb); |
| 488 | } |
| 489 | |
| 490 | serial_ttystate |
| 491 | serial_get_tty_state (struct serial *scb) |
| 492 | { |
| 493 | return scb->ops->get_tty_state (scb); |
| 494 | } |
| 495 | |
| 496 | serial_ttystate |
| 497 | serial_copy_tty_state (struct serial *scb, serial_ttystate ttystate) |
| 498 | { |
| 499 | return scb->ops->copy_tty_state (scb, ttystate); |
| 500 | } |
| 501 | |
| 502 | int |
| 503 | serial_set_tty_state (struct serial *scb, serial_ttystate ttystate) |
| 504 | { |
| 505 | return scb->ops->set_tty_state (scb, ttystate); |
| 506 | } |
| 507 | |
| 508 | void |
| 509 | serial_print_tty_state (struct serial *scb, |
| 510 | serial_ttystate ttystate, |
| 511 | struct ui_file *stream) |
| 512 | { |
| 513 | scb->ops->print_tty_state (scb, ttystate, stream); |
| 514 | } |
| 515 | |
| 516 | int |
| 517 | serial_noflush_set_tty_state (struct serial *scb, |
| 518 | serial_ttystate new_ttystate, |
| 519 | serial_ttystate old_ttystate) |
| 520 | { |
| 521 | return scb->ops->noflush_set_tty_state (scb, new_ttystate, old_ttystate); |
| 522 | } |
| 523 | |
| 524 | int |
| 525 | serial_setbaudrate (struct serial *scb, int rate) |
| 526 | { |
| 527 | return scb->ops->setbaudrate (scb, rate); |
| 528 | } |
| 529 | |
| 530 | int |
| 531 | serial_setstopbits (struct serial *scb, int num) |
| 532 | { |
| 533 | return scb->ops->setstopbits (scb, num); |
| 534 | } |
| 535 | |
| 536 | int |
| 537 | serial_can_async_p (struct serial *scb) |
| 538 | { |
| 539 | return (scb->ops->async != NULL); |
| 540 | } |
| 541 | |
| 542 | int |
| 543 | serial_is_async_p (struct serial *scb) |
| 544 | { |
| 545 | return (scb->ops->async != NULL) && (scb->async_handler != NULL); |
| 546 | } |
| 547 | |
| 548 | void |
| 549 | serial_async (struct serial *scb, |
| 550 | serial_event_ftype *handler, |
| 551 | void *context) |
| 552 | { |
| 553 | int changed = ((scb->async_handler == NULL) != (handler == NULL)); |
| 554 | |
| 555 | scb->async_handler = handler; |
| 556 | scb->async_context = context; |
| 557 | /* Only change mode if there is a need. */ |
| 558 | if (changed) |
| 559 | scb->ops->async (scb, handler != NULL); |
| 560 | } |
| 561 | |
| 562 | int |
| 563 | deprecated_serial_fd (struct serial *scb) |
| 564 | { |
| 565 | /* FIXME: should this output a warning that deprecated code is being |
| 566 | called? */ |
| 567 | if (scb->fd < 0) |
| 568 | { |
| 569 | internal_error (__FILE__, __LINE__, |
| 570 | _("serial: FD not valid")); |
| 571 | } |
| 572 | return scb->fd; /* sigh */ |
| 573 | } |
| 574 | |
| 575 | void |
| 576 | serial_debug (struct serial *scb, int debug_p) |
| 577 | { |
| 578 | scb->debug_p = debug_p; |
| 579 | } |
| 580 | |
| 581 | int |
| 582 | serial_debug_p (struct serial *scb) |
| 583 | { |
| 584 | return scb->debug_p || global_serial_debug_p; |
| 585 | } |
| 586 | |
| 587 | #ifdef USE_WIN32API |
| 588 | void |
| 589 | serial_wait_handle (struct serial *scb, HANDLE *read, HANDLE *except) |
| 590 | { |
| 591 | if (scb->ops->wait_handle) |
| 592 | scb->ops->wait_handle (scb, read, except); |
| 593 | else |
| 594 | { |
| 595 | *read = (HANDLE) _get_osfhandle (scb->fd); |
| 596 | *except = NULL; |
| 597 | } |
| 598 | } |
| 599 | |
| 600 | void |
| 601 | serial_done_wait_handle (struct serial *scb) |
| 602 | { |
| 603 | if (scb->ops->done_wait_handle) |
| 604 | scb->ops->done_wait_handle (scb); |
| 605 | } |
| 606 | #endif |
| 607 | |
| 608 | int |
| 609 | serial_pipe (struct serial *scbs[2]) |
| 610 | { |
| 611 | struct serial_ops *ops; |
| 612 | int fildes[2]; |
| 613 | |
| 614 | ops = serial_interface_lookup ("pipe"); |
| 615 | if (!ops) |
| 616 | { |
| 617 | errno = ENOSYS; |
| 618 | return -1; |
| 619 | } |
| 620 | |
| 621 | if (gdb_pipe (fildes) == -1) |
| 622 | return -1; |
| 623 | |
| 624 | scbs[0] = serial_fdopen_ops (fildes[0], ops); |
| 625 | scbs[1] = serial_fdopen_ops (fildes[1], ops); |
| 626 | return 0; |
| 627 | } |
| 628 | |
| 629 | #if 0 |
| 630 | /* The connect command is #if 0 because I hadn't thought of an elegant |
| 631 | way to wait for I/O on two `struct serial *'s simultaneously. Two |
| 632 | solutions came to mind: |
| 633 | |
| 634 | 1) Fork, and have have one fork handle the to user direction, |
| 635 | and have the other hand the to target direction. This |
| 636 | obviously won't cut it for MSDOS. |
| 637 | |
| 638 | 2) Use something like select. This assumes that stdin and |
| 639 | the target side can both be waited on via the same |
| 640 | mechanism. This may not be true for DOS, if GDB is |
| 641 | talking to the target via a TCP socket. |
| 642 | -grossman, 8 Jun 93 */ |
| 643 | |
| 644 | /* Connect the user directly to the remote system. This command acts just like |
| 645 | the 'cu' or 'tip' command. Use <CR>~. or <CR>~^D to break out. */ |
| 646 | |
| 647 | static struct serial *tty_desc; /* Controlling terminal */ |
| 648 | |
| 649 | static void |
| 650 | cleanup_tty (serial_ttystate ttystate) |
| 651 | { |
| 652 | printf_unfiltered ("\r\n[Exiting connect mode]\r\n"); |
| 653 | serial_set_tty_state (tty_desc, ttystate); |
| 654 | xfree (ttystate); |
| 655 | serial_close (tty_desc); |
| 656 | } |
| 657 | |
| 658 | static void |
| 659 | connect_command (char *args, int fromtty) |
| 660 | { |
| 661 | int c; |
| 662 | char cur_esc = 0; |
| 663 | serial_ttystate ttystate; |
| 664 | struct serial *port_desc; /* TTY port */ |
| 665 | |
| 666 | dont_repeat (); |
| 667 | |
| 668 | if (args) |
| 669 | fprintf_unfiltered (gdb_stderr, |
| 670 | "This command takes no args. " |
| 671 | "They have been ignored.\n"); |
| 672 | |
| 673 | printf_unfiltered ("[Entering connect mode. Use ~. or ~^D to escape]\n"); |
| 674 | |
| 675 | tty_desc = serial_fdopen (0); |
| 676 | port_desc = last_serial_opened; |
| 677 | |
| 678 | ttystate = serial_get_tty_state (tty_desc); |
| 679 | |
| 680 | serial_raw (tty_desc); |
| 681 | serial_raw (port_desc); |
| 682 | |
| 683 | make_cleanup (cleanup_tty, ttystate); |
| 684 | |
| 685 | while (1) |
| 686 | { |
| 687 | int mask; |
| 688 | |
| 689 | mask = serial_wait_2 (tty_desc, port_desc, -1); |
| 690 | |
| 691 | if (mask & 2) |
| 692 | { /* tty input */ |
| 693 | char cx; |
| 694 | |
| 695 | while (1) |
| 696 | { |
| 697 | c = serial_readchar (tty_desc, 0); |
| 698 | |
| 699 | if (c == SERIAL_TIMEOUT) |
| 700 | break; |
| 701 | |
| 702 | if (c < 0) |
| 703 | perror_with_name (_("connect")); |
| 704 | |
| 705 | cx = c; |
| 706 | serial_write (port_desc, &cx, 1); |
| 707 | |
| 708 | switch (cur_esc) |
| 709 | { |
| 710 | case 0: |
| 711 | if (c == '\r') |
| 712 | cur_esc = c; |
| 713 | break; |
| 714 | case '\r': |
| 715 | if (c == '~') |
| 716 | cur_esc = c; |
| 717 | else |
| 718 | cur_esc = 0; |
| 719 | break; |
| 720 | case '~': |
| 721 | if (c == '.' || c == '\004') |
| 722 | return; |
| 723 | else |
| 724 | cur_esc = 0; |
| 725 | } |
| 726 | } |
| 727 | } |
| 728 | |
| 729 | if (mask & 1) |
| 730 | { /* Port input */ |
| 731 | char cx; |
| 732 | |
| 733 | while (1) |
| 734 | { |
| 735 | c = serial_readchar (port_desc, 0); |
| 736 | |
| 737 | if (c == SERIAL_TIMEOUT) |
| 738 | break; |
| 739 | |
| 740 | if (c < 0) |
| 741 | perror_with_name (_("connect")); |
| 742 | |
| 743 | cx = c; |
| 744 | |
| 745 | serial_write (tty_desc, &cx, 1); |
| 746 | } |
| 747 | } |
| 748 | } |
| 749 | } |
| 750 | #endif /* 0 */ |
| 751 | |
| 752 | /* Serial set/show framework. */ |
| 753 | |
| 754 | static struct cmd_list_element *serial_set_cmdlist; |
| 755 | static struct cmd_list_element *serial_show_cmdlist; |
| 756 | |
| 757 | static void |
| 758 | serial_set_cmd (char *args, int from_tty) |
| 759 | { |
| 760 | printf_unfiltered ("\"set serial\" must be followed " |
| 761 | "by the name of a command.\n"); |
| 762 | help_list (serial_set_cmdlist, "set serial ", -1, gdb_stdout); |
| 763 | } |
| 764 | |
| 765 | static void |
| 766 | serial_show_cmd (char *args, int from_tty) |
| 767 | { |
| 768 | cmd_show_list (serial_show_cmdlist, from_tty, ""); |
| 769 | } |
| 770 | |
| 771 | |
| 772 | void |
| 773 | _initialize_serial (void) |
| 774 | { |
| 775 | #if 0 |
| 776 | add_com ("connect", class_obscure, connect_command, _("\ |
| 777 | Connect the terminal directly up to the command monitor.\n\ |
| 778 | Use <CR>~. or <CR>~^D to break out.")); |
| 779 | #endif /* 0 */ |
| 780 | |
| 781 | add_prefix_cmd ("serial", class_maintenance, serial_set_cmd, _("\ |
| 782 | Set default serial/parallel port configuration."), |
| 783 | &serial_set_cmdlist, "set serial ", |
| 784 | 0/*allow-unknown*/, |
| 785 | &setlist); |
| 786 | |
| 787 | add_prefix_cmd ("serial", class_maintenance, serial_show_cmd, _("\ |
| 788 | Show default serial/parallel port configuration."), |
| 789 | &serial_show_cmdlist, "show serial ", |
| 790 | 0/*allow-unknown*/, |
| 791 | &showlist); |
| 792 | |
| 793 | add_setshow_filename_cmd ("remotelogfile", no_class, &serial_logfile, _("\ |
| 794 | Set filename for remote session recording."), _("\ |
| 795 | Show filename for remote session recording."), _("\ |
| 796 | This file is used to record the remote session for future playback\n\ |
| 797 | by gdbserver."), |
| 798 | NULL, |
| 799 | NULL, /* FIXME: i18n: */ |
| 800 | &setlist, &showlist); |
| 801 | |
| 802 | add_setshow_enum_cmd ("remotelogbase", no_class, logbase_enums, |
| 803 | &serial_logbase, _("\ |
| 804 | Set numerical base for remote session logging"), _("\ |
| 805 | Show numerical base for remote session logging"), NULL, |
| 806 | NULL, |
| 807 | NULL, /* FIXME: i18n: */ |
| 808 | &setlist, &showlist); |
| 809 | |
| 810 | add_setshow_zinteger_cmd ("serial", class_maintenance, |
| 811 | &global_serial_debug_p, _("\ |
| 812 | Set serial debugging."), _("\ |
| 813 | Show serial debugging."), _("\ |
| 814 | When non-zero, serial port debugging is enabled."), |
| 815 | NULL, |
| 816 | NULL, /* FIXME: i18n: */ |
| 817 | &setdebuglist, &showdebuglist); |
| 818 | } |