| 1 | /* Main code for remote server for GDB. |
| 2 | Copyright (C) 1989, 1993, 1994, 1995, 1997, 1998, 1999, 2000, 2002, 2003, |
| 3 | 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #include "server.h" |
| 21 | |
| 22 | #if HAVE_UNISTD_H |
| 23 | #include <unistd.h> |
| 24 | #endif |
| 25 | #if HAVE_SIGNAL_H |
| 26 | #include <signal.h> |
| 27 | #endif |
| 28 | #if HAVE_SYS_WAIT_H |
| 29 | #include <sys/wait.h> |
| 30 | #endif |
| 31 | #if HAVE_MALLOC_H |
| 32 | #include <malloc.h> |
| 33 | #endif |
| 34 | |
| 35 | ptid_t cont_thread; |
| 36 | ptid_t general_thread; |
| 37 | ptid_t step_thread; |
| 38 | |
| 39 | int server_waiting; |
| 40 | |
| 41 | static int extended_protocol; |
| 42 | static int response_needed; |
| 43 | static int exit_requested; |
| 44 | |
| 45 | int multi_process; |
| 46 | int non_stop; |
| 47 | |
| 48 | static char **program_argv, **wrapper_argv; |
| 49 | |
| 50 | /* Enable miscellaneous debugging output. The name is historical - it |
| 51 | was originally used to debug LinuxThreads support. */ |
| 52 | int debug_threads; |
| 53 | |
| 54 | /* Enable debugging of h/w breakpoint/watchpoint support. */ |
| 55 | int debug_hw_points; |
| 56 | |
| 57 | int pass_signals[TARGET_SIGNAL_LAST]; |
| 58 | |
| 59 | jmp_buf toplevel; |
| 60 | |
| 61 | const char *gdbserver_xmltarget; |
| 62 | |
| 63 | /* The PID of the originally created or attached inferior. Used to |
| 64 | send signals to the process when GDB sends us an asynchronous interrupt |
| 65 | (user hitting Control-C in the client), and to wait for the child to exit |
| 66 | when no longer debugging it. */ |
| 67 | |
| 68 | unsigned long signal_pid; |
| 69 | |
| 70 | #ifdef SIGTTOU |
| 71 | /* A file descriptor for the controlling terminal. */ |
| 72 | int terminal_fd; |
| 73 | |
| 74 | /* TERMINAL_FD's original foreground group. */ |
| 75 | pid_t old_foreground_pgrp; |
| 76 | |
| 77 | /* Hand back terminal ownership to the original foreground group. */ |
| 78 | |
| 79 | static void |
| 80 | restore_old_foreground_pgrp (void) |
| 81 | { |
| 82 | tcsetpgrp (terminal_fd, old_foreground_pgrp); |
| 83 | } |
| 84 | #endif |
| 85 | |
| 86 | /* Set if you want to disable optional thread related packets support |
| 87 | in gdbserver, for the sake of testing GDB against stubs that don't |
| 88 | support them. */ |
| 89 | int disable_packet_vCont; |
| 90 | int disable_packet_Tthread; |
| 91 | int disable_packet_qC; |
| 92 | int disable_packet_qfThreadInfo; |
| 93 | |
| 94 | /* Last status reported to GDB. */ |
| 95 | static struct target_waitstatus last_status; |
| 96 | static ptid_t last_ptid; |
| 97 | |
| 98 | static char *own_buf; |
| 99 | static unsigned char *mem_buf; |
| 100 | |
| 101 | /* Structure holding information relative to a single stop reply. We |
| 102 | keep a queue of these (really a singly-linked list) to push to GDB |
| 103 | in non-stop mode. */ |
| 104 | struct vstop_notif |
| 105 | { |
| 106 | /* Pointer to next in list. */ |
| 107 | struct vstop_notif *next; |
| 108 | |
| 109 | /* Thread or process that got the event. */ |
| 110 | ptid_t ptid; |
| 111 | |
| 112 | /* Event info. */ |
| 113 | struct target_waitstatus status; |
| 114 | }; |
| 115 | |
| 116 | /* The pending stop replies list head. */ |
| 117 | static struct vstop_notif *notif_queue = NULL; |
| 118 | |
| 119 | /* Put a stop reply to the stop reply queue. */ |
| 120 | |
| 121 | static void |
| 122 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
| 123 | { |
| 124 | struct vstop_notif *new_notif; |
| 125 | |
| 126 | new_notif = malloc (sizeof (*new_notif)); |
| 127 | new_notif->next = NULL; |
| 128 | new_notif->ptid = ptid; |
| 129 | new_notif->status = *status; |
| 130 | |
| 131 | if (notif_queue) |
| 132 | { |
| 133 | struct vstop_notif *tail; |
| 134 | for (tail = notif_queue; |
| 135 | tail && tail->next; |
| 136 | tail = tail->next) |
| 137 | ; |
| 138 | tail->next = new_notif; |
| 139 | } |
| 140 | else |
| 141 | notif_queue = new_notif; |
| 142 | |
| 143 | if (remote_debug) |
| 144 | { |
| 145 | int i = 0; |
| 146 | struct vstop_notif *n; |
| 147 | |
| 148 | for (n = notif_queue; n; n = n->next) |
| 149 | i++; |
| 150 | |
| 151 | fprintf (stderr, "pending stop replies: %d\n", i); |
| 152 | } |
| 153 | } |
| 154 | |
| 155 | /* Place an event in the stop reply queue, and push a notification if |
| 156 | we aren't sending one yet. */ |
| 157 | |
| 158 | void |
| 159 | push_event (ptid_t ptid, struct target_waitstatus *status) |
| 160 | { |
| 161 | queue_stop_reply (ptid, status); |
| 162 | |
| 163 | /* If this is the first stop reply in the queue, then inform GDB |
| 164 | about it, by sending a Stop notification. */ |
| 165 | if (notif_queue->next == NULL) |
| 166 | { |
| 167 | char *p = own_buf; |
| 168 | strcpy (p, "Stop:"); |
| 169 | p += strlen (p); |
| 170 | prepare_resume_reply (p, |
| 171 | notif_queue->ptid, ¬if_queue->status); |
| 172 | putpkt_notif (own_buf); |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | /* Get rid of the currently pending stop replies for PID. If PID is |
| 177 | -1, then apply to all processes. */ |
| 178 | |
| 179 | static void |
| 180 | discard_queued_stop_replies (int pid) |
| 181 | { |
| 182 | struct vstop_notif *prev = NULL, *reply, *next; |
| 183 | |
| 184 | for (reply = notif_queue; reply; reply = next) |
| 185 | { |
| 186 | next = reply->next; |
| 187 | |
| 188 | if (pid == -1 |
| 189 | || ptid_get_pid (reply->ptid) == pid) |
| 190 | { |
| 191 | if (reply == notif_queue) |
| 192 | notif_queue = next; |
| 193 | else |
| 194 | prev->next = reply->next; |
| 195 | |
| 196 | free (reply); |
| 197 | } |
| 198 | else |
| 199 | prev = reply; |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | /* If there are more stop replies to push, push one now. */ |
| 204 | |
| 205 | static void |
| 206 | send_next_stop_reply (char *own_buf) |
| 207 | { |
| 208 | if (notif_queue) |
| 209 | prepare_resume_reply (own_buf, |
| 210 | notif_queue->ptid, |
| 211 | ¬if_queue->status); |
| 212 | else |
| 213 | write_ok (own_buf); |
| 214 | } |
| 215 | |
| 216 | static int |
| 217 | target_running (void) |
| 218 | { |
| 219 | return all_threads.head != NULL; |
| 220 | } |
| 221 | |
| 222 | static int |
| 223 | start_inferior (char **argv) |
| 224 | { |
| 225 | char **new_argv = argv; |
| 226 | |
| 227 | if (wrapper_argv != NULL) |
| 228 | { |
| 229 | int i, count = 1; |
| 230 | |
| 231 | for (i = 0; wrapper_argv[i] != NULL; i++) |
| 232 | count++; |
| 233 | for (i = 0; argv[i] != NULL; i++) |
| 234 | count++; |
| 235 | new_argv = alloca (sizeof (char *) * count); |
| 236 | count = 0; |
| 237 | for (i = 0; wrapper_argv[i] != NULL; i++) |
| 238 | new_argv[count++] = wrapper_argv[i]; |
| 239 | for (i = 0; argv[i] != NULL; i++) |
| 240 | new_argv[count++] = argv[i]; |
| 241 | new_argv[count] = NULL; |
| 242 | } |
| 243 | |
| 244 | #ifdef SIGTTOU |
| 245 | signal (SIGTTOU, SIG_DFL); |
| 246 | signal (SIGTTIN, SIG_DFL); |
| 247 | #endif |
| 248 | |
| 249 | signal_pid = create_inferior (new_argv[0], new_argv); |
| 250 | |
| 251 | /* FIXME: we don't actually know at this point that the create |
| 252 | actually succeeded. We won't know that until we wait. */ |
| 253 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
| 254 | signal_pid); |
| 255 | fflush (stderr); |
| 256 | |
| 257 | #ifdef SIGTTOU |
| 258 | signal (SIGTTOU, SIG_IGN); |
| 259 | signal (SIGTTIN, SIG_IGN); |
| 260 | terminal_fd = fileno (stderr); |
| 261 | old_foreground_pgrp = tcgetpgrp (terminal_fd); |
| 262 | tcsetpgrp (terminal_fd, signal_pid); |
| 263 | atexit (restore_old_foreground_pgrp); |
| 264 | #endif |
| 265 | |
| 266 | if (wrapper_argv != NULL) |
| 267 | { |
| 268 | struct thread_resume resume_info; |
| 269 | ptid_t ptid; |
| 270 | |
| 271 | resume_info.thread = pid_to_ptid (signal_pid); |
| 272 | resume_info.kind = resume_continue; |
| 273 | resume_info.sig = 0; |
| 274 | |
| 275 | ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
| 276 | |
| 277 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
| 278 | return signal_pid; |
| 279 | |
| 280 | do |
| 281 | { |
| 282 | (*the_target->resume) (&resume_info, 1); |
| 283 | |
| 284 | mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
| 285 | if (last_status.kind != TARGET_WAITKIND_STOPPED) |
| 286 | return signal_pid; |
| 287 | } |
| 288 | while (last_status.value.sig != TARGET_SIGNAL_TRAP); |
| 289 | |
| 290 | return signal_pid; |
| 291 | } |
| 292 | |
| 293 | /* Wait till we are at 1st instruction in program, return new pid |
| 294 | (assuming success). */ |
| 295 | last_ptid = mywait (pid_to_ptid (signal_pid), &last_status, 0, 0); |
| 296 | |
| 297 | return signal_pid; |
| 298 | } |
| 299 | |
| 300 | static int |
| 301 | attach_inferior (int pid) |
| 302 | { |
| 303 | /* myattach should return -1 if attaching is unsupported, |
| 304 | 0 if it succeeded, and call error() otherwise. */ |
| 305 | |
| 306 | if (myattach (pid) != 0) |
| 307 | return -1; |
| 308 | |
| 309 | fprintf (stderr, "Attached; pid = %d\n", pid); |
| 310 | fflush (stderr); |
| 311 | |
| 312 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
| 313 | attach function, so that it can be the main thread instead of |
| 314 | whichever we were told to attach to. */ |
| 315 | signal_pid = pid; |
| 316 | |
| 317 | if (!non_stop) |
| 318 | { |
| 319 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
| 320 | |
| 321 | /* GDB knows to ignore the first SIGSTOP after attaching to a running |
| 322 | process using the "attach" command, but this is different; it's |
| 323 | just using "target remote". Pretend it's just starting up. */ |
| 324 | if (last_status.kind == TARGET_WAITKIND_STOPPED |
| 325 | && last_status.value.sig == TARGET_SIGNAL_STOP) |
| 326 | last_status.value.sig = TARGET_SIGNAL_TRAP; |
| 327 | } |
| 328 | |
| 329 | return 0; |
| 330 | } |
| 331 | |
| 332 | extern int remote_debug; |
| 333 | |
| 334 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
| 335 | or -1 otherwise. */ |
| 336 | |
| 337 | static int |
| 338 | decode_xfer_read (char *buf, char **annex, CORE_ADDR *ofs, unsigned int *len) |
| 339 | { |
| 340 | /* Extract and NUL-terminate the annex. */ |
| 341 | *annex = buf; |
| 342 | while (*buf && *buf != ':') |
| 343 | buf++; |
| 344 | if (*buf == '\0') |
| 345 | return -1; |
| 346 | *buf++ = 0; |
| 347 | |
| 348 | /* After the read marker and annex, qXfer looks like a |
| 349 | traditional 'm' packet. */ |
| 350 | decode_m_packet (buf, ofs, len); |
| 351 | |
| 352 | return 0; |
| 353 | } |
| 354 | |
| 355 | /* Write the response to a successful qXfer read. Returns the |
| 356 | length of the (binary) data stored in BUF, corresponding |
| 357 | to as much of DATA/LEN as we could fit. IS_MORE controls |
| 358 | the first character of the response. */ |
| 359 | static int |
| 360 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
| 361 | { |
| 362 | int out_len; |
| 363 | |
| 364 | if (is_more) |
| 365 | buf[0] = 'm'; |
| 366 | else |
| 367 | buf[0] = 'l'; |
| 368 | |
| 369 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, |
| 370 | PBUFSIZ - 2) + 1; |
| 371 | } |
| 372 | |
| 373 | /* Handle all of the extended 'Q' packets. */ |
| 374 | void |
| 375 | handle_general_set (char *own_buf) |
| 376 | { |
| 377 | if (strncmp ("QPassSignals:", own_buf, strlen ("QPassSignals:")) == 0) |
| 378 | { |
| 379 | int numsigs = (int) TARGET_SIGNAL_LAST, i; |
| 380 | const char *p = own_buf + strlen ("QPassSignals:"); |
| 381 | CORE_ADDR cursig; |
| 382 | |
| 383 | p = decode_address_to_semicolon (&cursig, p); |
| 384 | for (i = 0; i < numsigs; i++) |
| 385 | { |
| 386 | if (i == cursig) |
| 387 | { |
| 388 | pass_signals[i] = 1; |
| 389 | if (*p == '\0') |
| 390 | /* Keep looping, to clear the remaining signals. */ |
| 391 | cursig = -1; |
| 392 | else |
| 393 | p = decode_address_to_semicolon (&cursig, p); |
| 394 | } |
| 395 | else |
| 396 | pass_signals[i] = 0; |
| 397 | } |
| 398 | strcpy (own_buf, "OK"); |
| 399 | return; |
| 400 | } |
| 401 | |
| 402 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
| 403 | { |
| 404 | if (remote_debug) |
| 405 | { |
| 406 | fprintf (stderr, "[noack mode enabled]\n"); |
| 407 | fflush (stderr); |
| 408 | } |
| 409 | |
| 410 | noack_mode = 1; |
| 411 | write_ok (own_buf); |
| 412 | return; |
| 413 | } |
| 414 | |
| 415 | if (strncmp (own_buf, "QNonStop:", 9) == 0) |
| 416 | { |
| 417 | char *mode = own_buf + 9; |
| 418 | int req = -1; |
| 419 | char *req_str; |
| 420 | |
| 421 | if (strcmp (mode, "0") == 0) |
| 422 | req = 0; |
| 423 | else if (strcmp (mode, "1") == 0) |
| 424 | req = 1; |
| 425 | else |
| 426 | { |
| 427 | /* We don't know what this mode is, so complain to |
| 428 | GDB. */ |
| 429 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", |
| 430 | own_buf); |
| 431 | write_enn (own_buf); |
| 432 | return; |
| 433 | } |
| 434 | |
| 435 | req_str = req ? "non-stop" : "all-stop"; |
| 436 | if (start_non_stop (req) != 0) |
| 437 | { |
| 438 | fprintf (stderr, "Setting %s mode failed\n", req_str); |
| 439 | write_enn (own_buf); |
| 440 | return; |
| 441 | } |
| 442 | |
| 443 | non_stop = req; |
| 444 | |
| 445 | if (remote_debug) |
| 446 | fprintf (stderr, "[%s mode enabled]\n", req_str); |
| 447 | |
| 448 | write_ok (own_buf); |
| 449 | return; |
| 450 | } |
| 451 | |
| 452 | /* Otherwise we didn't know what packet it was. Say we didn't |
| 453 | understand it. */ |
| 454 | own_buf[0] = 0; |
| 455 | } |
| 456 | |
| 457 | static const char * |
| 458 | get_features_xml (const char *annex) |
| 459 | { |
| 460 | /* gdbserver_xmltarget defines what to return when looking |
| 461 | for the "target.xml" file. Its contents can either be |
| 462 | verbatim XML code (prefixed with a '@') or else the name |
| 463 | of the actual XML file to be used in place of "target.xml". |
| 464 | |
| 465 | This variable is set up from the auto-generated |
| 466 | init_registers_... routine for the current target. */ |
| 467 | |
| 468 | if (gdbserver_xmltarget |
| 469 | && strcmp (annex, "target.xml") == 0) |
| 470 | { |
| 471 | if (*gdbserver_xmltarget == '@') |
| 472 | return gdbserver_xmltarget + 1; |
| 473 | else |
| 474 | annex = gdbserver_xmltarget; |
| 475 | } |
| 476 | |
| 477 | #ifdef USE_XML |
| 478 | { |
| 479 | extern const char *const xml_builtin[][2]; |
| 480 | int i; |
| 481 | |
| 482 | /* Look for the annex. */ |
| 483 | for (i = 0; xml_builtin[i][0] != NULL; i++) |
| 484 | if (strcmp (annex, xml_builtin[i][0]) == 0) |
| 485 | break; |
| 486 | |
| 487 | if (xml_builtin[i][0] != NULL) |
| 488 | return xml_builtin[i][1]; |
| 489 | } |
| 490 | #endif |
| 491 | |
| 492 | return NULL; |
| 493 | } |
| 494 | |
| 495 | void |
| 496 | monitor_show_help (void) |
| 497 | { |
| 498 | monitor_output ("The following monitor commands are supported:\n"); |
| 499 | monitor_output (" set debug <0|1>\n"); |
| 500 | monitor_output (" Enable general debugging messages\n"); |
| 501 | monitor_output (" set debug-hw-points <0|1>\n"); |
| 502 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); |
| 503 | monitor_output (" set remote-debug <0|1>\n"); |
| 504 | monitor_output (" Enable remote protocol debugging messages\n"); |
| 505 | monitor_output (" exit\n"); |
| 506 | monitor_output (" Quit GDBserver\n"); |
| 507 | } |
| 508 | |
| 509 | /* Subroutine of handle_search_memory to simplify it. */ |
| 510 | |
| 511 | static int |
| 512 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, |
| 513 | gdb_byte *pattern, unsigned pattern_len, |
| 514 | gdb_byte *search_buf, |
| 515 | unsigned chunk_size, unsigned search_buf_size, |
| 516 | CORE_ADDR *found_addrp) |
| 517 | { |
| 518 | /* Prime the search buffer. */ |
| 519 | |
| 520 | if (read_inferior_memory (start_addr, search_buf, search_buf_size) != 0) |
| 521 | { |
| 522 | warning ("Unable to access target memory at 0x%lx, halting search.", |
| 523 | (long) start_addr); |
| 524 | return -1; |
| 525 | } |
| 526 | |
| 527 | /* Perform the search. |
| 528 | |
| 529 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. |
| 530 | When we've scanned N bytes we copy the trailing bytes to the start and |
| 531 | read in another N bytes. */ |
| 532 | |
| 533 | while (search_space_len >= pattern_len) |
| 534 | { |
| 535 | gdb_byte *found_ptr; |
| 536 | unsigned nr_search_bytes = (search_space_len < search_buf_size |
| 537 | ? search_space_len |
| 538 | : search_buf_size); |
| 539 | |
| 540 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); |
| 541 | |
| 542 | if (found_ptr != NULL) |
| 543 | { |
| 544 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); |
| 545 | *found_addrp = found_addr; |
| 546 | return 1; |
| 547 | } |
| 548 | |
| 549 | /* Not found in this chunk, skip to next chunk. */ |
| 550 | |
| 551 | /* Don't let search_space_len wrap here, it's unsigned. */ |
| 552 | if (search_space_len >= chunk_size) |
| 553 | search_space_len -= chunk_size; |
| 554 | else |
| 555 | search_space_len = 0; |
| 556 | |
| 557 | if (search_space_len >= pattern_len) |
| 558 | { |
| 559 | unsigned keep_len = search_buf_size - chunk_size; |
| 560 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
| 561 | int nr_to_read; |
| 562 | |
| 563 | /* Copy the trailing part of the previous iteration to the front |
| 564 | of the buffer for the next iteration. */ |
| 565 | memcpy (search_buf, search_buf + chunk_size, keep_len); |
| 566 | |
| 567 | nr_to_read = (search_space_len - keep_len < chunk_size |
| 568 | ? search_space_len - keep_len |
| 569 | : chunk_size); |
| 570 | |
| 571 | if (read_inferior_memory (read_addr, search_buf + keep_len, |
| 572 | nr_to_read) != 0) |
| 573 | { |
| 574 | warning ("Unable to access target memory at 0x%lx, halting search.", |
| 575 | (long) read_addr); |
| 576 | return -1; |
| 577 | } |
| 578 | |
| 579 | start_addr += chunk_size; |
| 580 | } |
| 581 | } |
| 582 | |
| 583 | /* Not found. */ |
| 584 | |
| 585 | return 0; |
| 586 | } |
| 587 | |
| 588 | /* Handle qSearch:memory packets. */ |
| 589 | |
| 590 | static void |
| 591 | handle_search_memory (char *own_buf, int packet_len) |
| 592 | { |
| 593 | CORE_ADDR start_addr; |
| 594 | CORE_ADDR search_space_len; |
| 595 | gdb_byte *pattern; |
| 596 | unsigned int pattern_len; |
| 597 | /* NOTE: also defined in find.c testcase. */ |
| 598 | #define SEARCH_CHUNK_SIZE 16000 |
| 599 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; |
| 600 | /* Buffer to hold memory contents for searching. */ |
| 601 | gdb_byte *search_buf; |
| 602 | unsigned search_buf_size; |
| 603 | int found; |
| 604 | CORE_ADDR found_addr; |
| 605 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; |
| 606 | |
| 607 | pattern = malloc (packet_len); |
| 608 | if (pattern == NULL) |
| 609 | { |
| 610 | error ("Unable to allocate memory to perform the search"); |
| 611 | strcpy (own_buf, "E00"); |
| 612 | return; |
| 613 | } |
| 614 | if (decode_search_memory_packet (own_buf + cmd_name_len, |
| 615 | packet_len - cmd_name_len, |
| 616 | &start_addr, &search_space_len, |
| 617 | pattern, &pattern_len) < 0) |
| 618 | { |
| 619 | free (pattern); |
| 620 | error ("Error in parsing qSearch:memory packet"); |
| 621 | strcpy (own_buf, "E00"); |
| 622 | return; |
| 623 | } |
| 624 | |
| 625 | search_buf_size = chunk_size + pattern_len - 1; |
| 626 | |
| 627 | /* No point in trying to allocate a buffer larger than the search space. */ |
| 628 | if (search_space_len < search_buf_size) |
| 629 | search_buf_size = search_space_len; |
| 630 | |
| 631 | search_buf = malloc (search_buf_size); |
| 632 | if (search_buf == NULL) |
| 633 | { |
| 634 | free (pattern); |
| 635 | error ("Unable to allocate memory to perform the search"); |
| 636 | strcpy (own_buf, "E00"); |
| 637 | return; |
| 638 | } |
| 639 | |
| 640 | found = handle_search_memory_1 (start_addr, search_space_len, |
| 641 | pattern, pattern_len, |
| 642 | search_buf, chunk_size, search_buf_size, |
| 643 | &found_addr); |
| 644 | |
| 645 | if (found > 0) |
| 646 | sprintf (own_buf, "1,%lx", (long) found_addr); |
| 647 | else if (found == 0) |
| 648 | strcpy (own_buf, "0"); |
| 649 | else |
| 650 | strcpy (own_buf, "E00"); |
| 651 | |
| 652 | free (search_buf); |
| 653 | free (pattern); |
| 654 | } |
| 655 | |
| 656 | #define require_running(BUF) \ |
| 657 | if (!target_running ()) \ |
| 658 | { \ |
| 659 | write_enn (BUF); \ |
| 660 | return; \ |
| 661 | } |
| 662 | |
| 663 | /* Handle monitor commands not handled by target-specific handlers. */ |
| 664 | |
| 665 | static void |
| 666 | handle_monitor_command (char *mon) |
| 667 | { |
| 668 | if (strcmp (mon, "set debug 1") == 0) |
| 669 | { |
| 670 | debug_threads = 1; |
| 671 | monitor_output ("Debug output enabled.\n"); |
| 672 | } |
| 673 | else if (strcmp (mon, "set debug 0") == 0) |
| 674 | { |
| 675 | debug_threads = 0; |
| 676 | monitor_output ("Debug output disabled.\n"); |
| 677 | } |
| 678 | else if (strcmp (mon, "set debug-hw-points 1") == 0) |
| 679 | { |
| 680 | debug_hw_points = 1; |
| 681 | monitor_output ("H/W point debugging output enabled.\n"); |
| 682 | } |
| 683 | else if (strcmp (mon, "set debug-hw-points 0") == 0) |
| 684 | { |
| 685 | debug_hw_points = 0; |
| 686 | monitor_output ("H/W point debugging output disabled.\n"); |
| 687 | } |
| 688 | else if (strcmp (mon, "set remote-debug 1") == 0) |
| 689 | { |
| 690 | remote_debug = 1; |
| 691 | monitor_output ("Protocol debug output enabled.\n"); |
| 692 | } |
| 693 | else if (strcmp (mon, "set remote-debug 0") == 0) |
| 694 | { |
| 695 | remote_debug = 0; |
| 696 | monitor_output ("Protocol debug output disabled.\n"); |
| 697 | } |
| 698 | else if (strcmp (mon, "help") == 0) |
| 699 | monitor_show_help (); |
| 700 | else if (strcmp (mon, "exit") == 0) |
| 701 | exit_requested = 1; |
| 702 | else |
| 703 | { |
| 704 | monitor_output ("Unknown monitor command.\n\n"); |
| 705 | monitor_show_help (); |
| 706 | write_enn (own_buf); |
| 707 | } |
| 708 | } |
| 709 | |
| 710 | /* Handle all of the extended 'q' packets. */ |
| 711 | void |
| 712 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
| 713 | { |
| 714 | static struct inferior_list_entry *thread_ptr; |
| 715 | |
| 716 | /* Reply the current thread id. */ |
| 717 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
| 718 | { |
| 719 | ptid_t gdb_id; |
| 720 | require_running (own_buf); |
| 721 | |
| 722 | if (!ptid_equal (general_thread, null_ptid) |
| 723 | && !ptid_equal (general_thread, minus_one_ptid)) |
| 724 | gdb_id = general_thread; |
| 725 | else |
| 726 | { |
| 727 | thread_ptr = all_threads.head; |
| 728 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); |
| 729 | } |
| 730 | |
| 731 | sprintf (own_buf, "QC"); |
| 732 | own_buf += 2; |
| 733 | own_buf = write_ptid (own_buf, gdb_id); |
| 734 | return; |
| 735 | } |
| 736 | |
| 737 | if (strcmp ("qSymbol::", own_buf) == 0) |
| 738 | { |
| 739 | if (target_running () && the_target->look_up_symbols != NULL) |
| 740 | (*the_target->look_up_symbols) (); |
| 741 | |
| 742 | strcpy (own_buf, "OK"); |
| 743 | return; |
| 744 | } |
| 745 | |
| 746 | if (!disable_packet_qfThreadInfo) |
| 747 | { |
| 748 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
| 749 | { |
| 750 | ptid_t gdb_id; |
| 751 | |
| 752 | require_running (own_buf); |
| 753 | thread_ptr = all_threads.head; |
| 754 | |
| 755 | *own_buf++ = 'm'; |
| 756 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); |
| 757 | write_ptid (own_buf, gdb_id); |
| 758 | thread_ptr = thread_ptr->next; |
| 759 | return; |
| 760 | } |
| 761 | |
| 762 | if (strcmp ("qsThreadInfo", own_buf) == 0) |
| 763 | { |
| 764 | ptid_t gdb_id; |
| 765 | |
| 766 | require_running (own_buf); |
| 767 | if (thread_ptr != NULL) |
| 768 | { |
| 769 | *own_buf++ = 'm'; |
| 770 | gdb_id = thread_to_gdb_id ((struct thread_info *)thread_ptr); |
| 771 | write_ptid (own_buf, gdb_id); |
| 772 | thread_ptr = thread_ptr->next; |
| 773 | return; |
| 774 | } |
| 775 | else |
| 776 | { |
| 777 | sprintf (own_buf, "l"); |
| 778 | return; |
| 779 | } |
| 780 | } |
| 781 | } |
| 782 | |
| 783 | if (the_target->read_offsets != NULL |
| 784 | && strcmp ("qOffsets", own_buf) == 0) |
| 785 | { |
| 786 | CORE_ADDR text, data; |
| 787 | |
| 788 | require_running (own_buf); |
| 789 | if (the_target->read_offsets (&text, &data)) |
| 790 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", |
| 791 | (long)text, (long)data, (long)data); |
| 792 | else |
| 793 | write_enn (own_buf); |
| 794 | |
| 795 | return; |
| 796 | } |
| 797 | |
| 798 | if (the_target->qxfer_spu != NULL |
| 799 | && strncmp ("qXfer:spu:read:", own_buf, 15) == 0) |
| 800 | { |
| 801 | char *annex; |
| 802 | int n; |
| 803 | unsigned int len; |
| 804 | CORE_ADDR ofs; |
| 805 | unsigned char *spu_buf; |
| 806 | |
| 807 | require_running (own_buf); |
| 808 | strcpy (own_buf, "E00"); |
| 809 | if (decode_xfer_read (own_buf + 15, &annex, &ofs, &len) < 0) |
| 810 | return; |
| 811 | if (len > PBUFSIZ - 2) |
| 812 | len = PBUFSIZ - 2; |
| 813 | spu_buf = malloc (len + 1); |
| 814 | if (!spu_buf) |
| 815 | return; |
| 816 | |
| 817 | n = (*the_target->qxfer_spu) (annex, spu_buf, NULL, ofs, len + 1); |
| 818 | if (n < 0) |
| 819 | write_enn (own_buf); |
| 820 | else if (n > len) |
| 821 | *new_packet_len_p = write_qxfer_response (own_buf, spu_buf, len, 1); |
| 822 | else |
| 823 | *new_packet_len_p = write_qxfer_response (own_buf, spu_buf, n, 0); |
| 824 | |
| 825 | free (spu_buf); |
| 826 | return; |
| 827 | } |
| 828 | |
| 829 | if (the_target->qxfer_spu != NULL |
| 830 | && strncmp ("qXfer:spu:write:", own_buf, 16) == 0) |
| 831 | { |
| 832 | char *annex; |
| 833 | int n; |
| 834 | unsigned int len; |
| 835 | CORE_ADDR ofs; |
| 836 | unsigned char *spu_buf; |
| 837 | |
| 838 | require_running (own_buf); |
| 839 | strcpy (own_buf, "E00"); |
| 840 | spu_buf = malloc (packet_len - 15); |
| 841 | if (!spu_buf) |
| 842 | return; |
| 843 | if (decode_xfer_write (own_buf + 16, packet_len - 16, &annex, |
| 844 | &ofs, &len, spu_buf) < 0) |
| 845 | { |
| 846 | free (spu_buf); |
| 847 | return; |
| 848 | } |
| 849 | |
| 850 | n = (*the_target->qxfer_spu) |
| 851 | (annex, NULL, (unsigned const char *)spu_buf, ofs, len); |
| 852 | if (n < 0) |
| 853 | write_enn (own_buf); |
| 854 | else |
| 855 | sprintf (own_buf, "%x", n); |
| 856 | |
| 857 | free (spu_buf); |
| 858 | return; |
| 859 | } |
| 860 | |
| 861 | if (the_target->read_auxv != NULL |
| 862 | && strncmp ("qXfer:auxv:read:", own_buf, 16) == 0) |
| 863 | { |
| 864 | unsigned char *data; |
| 865 | int n; |
| 866 | CORE_ADDR ofs; |
| 867 | unsigned int len; |
| 868 | char *annex; |
| 869 | |
| 870 | require_running (own_buf); |
| 871 | |
| 872 | /* Reject any annex; grab the offset and length. */ |
| 873 | if (decode_xfer_read (own_buf + 16, &annex, &ofs, &len) < 0 |
| 874 | || annex[0] != '\0') |
| 875 | { |
| 876 | strcpy (own_buf, "E00"); |
| 877 | return; |
| 878 | } |
| 879 | |
| 880 | /* Read one extra byte, as an indicator of whether there is |
| 881 | more. */ |
| 882 | if (len > PBUFSIZ - 2) |
| 883 | len = PBUFSIZ - 2; |
| 884 | data = malloc (len + 1); |
| 885 | if (data == NULL) |
| 886 | { |
| 887 | write_enn (own_buf); |
| 888 | return; |
| 889 | } |
| 890 | n = (*the_target->read_auxv) (ofs, data, len + 1); |
| 891 | if (n < 0) |
| 892 | write_enn (own_buf); |
| 893 | else if (n > len) |
| 894 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); |
| 895 | else |
| 896 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); |
| 897 | |
| 898 | free (data); |
| 899 | |
| 900 | return; |
| 901 | } |
| 902 | |
| 903 | if (strncmp ("qXfer:features:read:", own_buf, 20) == 0) |
| 904 | { |
| 905 | CORE_ADDR ofs; |
| 906 | unsigned int len, total_len; |
| 907 | const char *document; |
| 908 | char *annex; |
| 909 | |
| 910 | require_running (own_buf); |
| 911 | |
| 912 | /* Grab the annex, offset, and length. */ |
| 913 | if (decode_xfer_read (own_buf + 20, &annex, &ofs, &len) < 0) |
| 914 | { |
| 915 | strcpy (own_buf, "E00"); |
| 916 | return; |
| 917 | } |
| 918 | |
| 919 | /* Now grab the correct annex. */ |
| 920 | document = get_features_xml (annex); |
| 921 | if (document == NULL) |
| 922 | { |
| 923 | strcpy (own_buf, "E00"); |
| 924 | return; |
| 925 | } |
| 926 | |
| 927 | total_len = strlen (document); |
| 928 | if (len > PBUFSIZ - 2) |
| 929 | len = PBUFSIZ - 2; |
| 930 | |
| 931 | if (ofs > total_len) |
| 932 | write_enn (own_buf); |
| 933 | else if (len < total_len - ofs) |
| 934 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, |
| 935 | len, 1); |
| 936 | else |
| 937 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, |
| 938 | total_len - ofs, 0); |
| 939 | |
| 940 | return; |
| 941 | } |
| 942 | |
| 943 | if (strncmp ("qXfer:libraries:read:", own_buf, 21) == 0) |
| 944 | { |
| 945 | CORE_ADDR ofs; |
| 946 | unsigned int len, total_len; |
| 947 | char *document, *p; |
| 948 | struct inferior_list_entry *dll_ptr; |
| 949 | char *annex; |
| 950 | |
| 951 | require_running (own_buf); |
| 952 | |
| 953 | /* Reject any annex; grab the offset and length. */ |
| 954 | if (decode_xfer_read (own_buf + 21, &annex, &ofs, &len) < 0 |
| 955 | || annex[0] != '\0') |
| 956 | { |
| 957 | strcpy (own_buf, "E00"); |
| 958 | return; |
| 959 | } |
| 960 | |
| 961 | /* Over-estimate the necessary memory. Assume that every character |
| 962 | in the library name must be escaped. */ |
| 963 | total_len = 64; |
| 964 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) |
| 965 | total_len += 128 + 6 * strlen (((struct dll_info *) dll_ptr)->name); |
| 966 | |
| 967 | document = malloc (total_len); |
| 968 | if (document == NULL) |
| 969 | { |
| 970 | write_enn (own_buf); |
| 971 | return; |
| 972 | } |
| 973 | strcpy (document, "<library-list>\n"); |
| 974 | p = document + strlen (document); |
| 975 | |
| 976 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) |
| 977 | { |
| 978 | struct dll_info *dll = (struct dll_info *) dll_ptr; |
| 979 | char *name; |
| 980 | |
| 981 | strcpy (p, " <library name=\""); |
| 982 | p = p + strlen (p); |
| 983 | name = xml_escape_text (dll->name); |
| 984 | strcpy (p, name); |
| 985 | free (name); |
| 986 | p = p + strlen (p); |
| 987 | strcpy (p, "\"><segment address=\""); |
| 988 | p = p + strlen (p); |
| 989 | sprintf (p, "0x%lx", (long) dll->base_addr); |
| 990 | p = p + strlen (p); |
| 991 | strcpy (p, "\"/></library>\n"); |
| 992 | p = p + strlen (p); |
| 993 | } |
| 994 | |
| 995 | strcpy (p, "</library-list>\n"); |
| 996 | |
| 997 | total_len = strlen (document); |
| 998 | if (len > PBUFSIZ - 2) |
| 999 | len = PBUFSIZ - 2; |
| 1000 | |
| 1001 | if (ofs > total_len) |
| 1002 | write_enn (own_buf); |
| 1003 | else if (len < total_len - ofs) |
| 1004 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, |
| 1005 | len, 1); |
| 1006 | else |
| 1007 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, |
| 1008 | total_len - ofs, 0); |
| 1009 | |
| 1010 | free (document); |
| 1011 | return; |
| 1012 | } |
| 1013 | |
| 1014 | if (the_target->qxfer_osdata != NULL |
| 1015 | && strncmp ("qXfer:osdata:read:", own_buf, 18) == 0) |
| 1016 | { |
| 1017 | char *annex; |
| 1018 | int n; |
| 1019 | unsigned int len; |
| 1020 | CORE_ADDR ofs; |
| 1021 | unsigned char *workbuf; |
| 1022 | |
| 1023 | strcpy (own_buf, "E00"); |
| 1024 | if (decode_xfer_read (own_buf + 18, &annex, &ofs, &len) < 0) |
| 1025 | return; |
| 1026 | if (len > PBUFSIZ - 2) |
| 1027 | len = PBUFSIZ - 2; |
| 1028 | workbuf = malloc (len + 1); |
| 1029 | if (!workbuf) |
| 1030 | return; |
| 1031 | |
| 1032 | n = (*the_target->qxfer_osdata) (annex, workbuf, NULL, ofs, len + 1); |
| 1033 | if (n < 0) |
| 1034 | write_enn (own_buf); |
| 1035 | else if (n > len) |
| 1036 | *new_packet_len_p = write_qxfer_response (own_buf, workbuf, len, 1); |
| 1037 | else |
| 1038 | *new_packet_len_p = write_qxfer_response (own_buf, workbuf, n, 0); |
| 1039 | |
| 1040 | free (workbuf); |
| 1041 | return; |
| 1042 | } |
| 1043 | |
| 1044 | if (the_target->qxfer_siginfo != NULL |
| 1045 | && strncmp ("qXfer:siginfo:read:", own_buf, 19) == 0) |
| 1046 | { |
| 1047 | unsigned char *data; |
| 1048 | int n; |
| 1049 | CORE_ADDR ofs; |
| 1050 | unsigned int len; |
| 1051 | char *annex; |
| 1052 | |
| 1053 | require_running (own_buf); |
| 1054 | |
| 1055 | /* Reject any annex; grab the offset and length. */ |
| 1056 | if (decode_xfer_read (own_buf + 19, &annex, &ofs, &len) < 0 |
| 1057 | || annex[0] != '\0') |
| 1058 | { |
| 1059 | strcpy (own_buf, "E00"); |
| 1060 | return; |
| 1061 | } |
| 1062 | |
| 1063 | /* Read one extra byte, as an indicator of whether there is |
| 1064 | more. */ |
| 1065 | if (len > PBUFSIZ - 2) |
| 1066 | len = PBUFSIZ - 2; |
| 1067 | data = malloc (len + 1); |
| 1068 | if (!data) |
| 1069 | return; |
| 1070 | n = (*the_target->qxfer_siginfo) (annex, data, NULL, ofs, len + 1); |
| 1071 | if (n < 0) |
| 1072 | write_enn (own_buf); |
| 1073 | else if (n > len) |
| 1074 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); |
| 1075 | else |
| 1076 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); |
| 1077 | |
| 1078 | free (data); |
| 1079 | return; |
| 1080 | } |
| 1081 | |
| 1082 | if (the_target->qxfer_siginfo != NULL |
| 1083 | && strncmp ("qXfer:siginfo:write:", own_buf, 20) == 0) |
| 1084 | { |
| 1085 | char *annex; |
| 1086 | int n; |
| 1087 | unsigned int len; |
| 1088 | CORE_ADDR ofs; |
| 1089 | unsigned char *data; |
| 1090 | |
| 1091 | require_running (own_buf); |
| 1092 | |
| 1093 | strcpy (own_buf, "E00"); |
| 1094 | data = malloc (packet_len - 19); |
| 1095 | if (!data) |
| 1096 | return; |
| 1097 | if (decode_xfer_write (own_buf + 20, packet_len - 20, &annex, |
| 1098 | &ofs, &len, data) < 0) |
| 1099 | { |
| 1100 | free (data); |
| 1101 | return; |
| 1102 | } |
| 1103 | |
| 1104 | n = (*the_target->qxfer_siginfo) |
| 1105 | (annex, NULL, (unsigned const char *)data, ofs, len); |
| 1106 | if (n < 0) |
| 1107 | write_enn (own_buf); |
| 1108 | else |
| 1109 | sprintf (own_buf, "%x", n); |
| 1110 | |
| 1111 | free (data); |
| 1112 | return; |
| 1113 | } |
| 1114 | |
| 1115 | /* Protocol features query. */ |
| 1116 | if (strncmp ("qSupported", own_buf, 10) == 0 |
| 1117 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
| 1118 | { |
| 1119 | char *p = &own_buf[10]; |
| 1120 | |
| 1121 | /* Process each feature being provided by GDB. The first |
| 1122 | feature will follow a ':', and latter features will follow |
| 1123 | ';'. */ |
| 1124 | if (*p == ':') |
| 1125 | for (p = strtok (p + 1, ";"); |
| 1126 | p != NULL; |
| 1127 | p = strtok (NULL, ";")) |
| 1128 | { |
| 1129 | if (strcmp (p, "multiprocess+") == 0) |
| 1130 | { |
| 1131 | /* GDB supports and wants multi-process support if |
| 1132 | possible. */ |
| 1133 | if (target_supports_multi_process ()) |
| 1134 | multi_process = 1; |
| 1135 | } |
| 1136 | } |
| 1137 | |
| 1138 | sprintf (own_buf, "PacketSize=%x;QPassSignals+", PBUFSIZ - 1); |
| 1139 | |
| 1140 | /* We do not have any hook to indicate whether the target backend |
| 1141 | supports qXfer:libraries:read, so always report it. */ |
| 1142 | strcat (own_buf, ";qXfer:libraries:read+"); |
| 1143 | |
| 1144 | if (the_target->read_auxv != NULL) |
| 1145 | strcat (own_buf, ";qXfer:auxv:read+"); |
| 1146 | |
| 1147 | if (the_target->qxfer_spu != NULL) |
| 1148 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); |
| 1149 | |
| 1150 | if (the_target->qxfer_siginfo != NULL) |
| 1151 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); |
| 1152 | |
| 1153 | /* We always report qXfer:features:read, as targets may |
| 1154 | install XML files on a subsequent call to arch_setup. |
| 1155 | If we reported to GDB on startup that we don't support |
| 1156 | qXfer:feature:read at all, we will never be re-queried. */ |
| 1157 | strcat (own_buf, ";qXfer:features:read+"); |
| 1158 | |
| 1159 | if (transport_is_reliable) |
| 1160 | strcat (own_buf, ";QStartNoAckMode+"); |
| 1161 | |
| 1162 | if (the_target->qxfer_osdata != NULL) |
| 1163 | strcat (own_buf, ";qXfer:osdata:read+"); |
| 1164 | |
| 1165 | if (target_supports_multi_process ()) |
| 1166 | strcat (own_buf, ";multiprocess+"); |
| 1167 | |
| 1168 | if (target_supports_non_stop ()) |
| 1169 | strcat (own_buf, ";QNonStop+"); |
| 1170 | |
| 1171 | return; |
| 1172 | } |
| 1173 | |
| 1174 | /* Thread-local storage support. */ |
| 1175 | if (the_target->get_tls_address != NULL |
| 1176 | && strncmp ("qGetTLSAddr:", own_buf, 12) == 0) |
| 1177 | { |
| 1178 | char *p = own_buf + 12; |
| 1179 | CORE_ADDR parts[2], address = 0; |
| 1180 | int i, err; |
| 1181 | ptid_t ptid = null_ptid; |
| 1182 | |
| 1183 | require_running (own_buf); |
| 1184 | |
| 1185 | for (i = 0; i < 3; i++) |
| 1186 | { |
| 1187 | char *p2; |
| 1188 | int len; |
| 1189 | |
| 1190 | if (p == NULL) |
| 1191 | break; |
| 1192 | |
| 1193 | p2 = strchr (p, ','); |
| 1194 | if (p2) |
| 1195 | { |
| 1196 | len = p2 - p; |
| 1197 | p2++; |
| 1198 | } |
| 1199 | else |
| 1200 | { |
| 1201 | len = strlen (p); |
| 1202 | p2 = NULL; |
| 1203 | } |
| 1204 | |
| 1205 | if (i == 0) |
| 1206 | ptid = read_ptid (p, NULL); |
| 1207 | else |
| 1208 | decode_address (&parts[i - 1], p, len); |
| 1209 | p = p2; |
| 1210 | } |
| 1211 | |
| 1212 | if (p != NULL || i < 3) |
| 1213 | err = 1; |
| 1214 | else |
| 1215 | { |
| 1216 | struct thread_info *thread = find_thread_ptid (ptid); |
| 1217 | |
| 1218 | if (thread == NULL) |
| 1219 | err = 2; |
| 1220 | else |
| 1221 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
| 1222 | &address); |
| 1223 | } |
| 1224 | |
| 1225 | if (err == 0) |
| 1226 | { |
| 1227 | sprintf (own_buf, "%llx", address); |
| 1228 | return; |
| 1229 | } |
| 1230 | else if (err > 0) |
| 1231 | { |
| 1232 | write_enn (own_buf); |
| 1233 | return; |
| 1234 | } |
| 1235 | |
| 1236 | /* Otherwise, pretend we do not understand this packet. */ |
| 1237 | } |
| 1238 | |
| 1239 | /* Handle "monitor" commands. */ |
| 1240 | if (strncmp ("qRcmd,", own_buf, 6) == 0) |
| 1241 | { |
| 1242 | char *mon = malloc (PBUFSIZ); |
| 1243 | int len = strlen (own_buf + 6); |
| 1244 | |
| 1245 | if (mon == NULL) |
| 1246 | { |
| 1247 | write_enn (own_buf); |
| 1248 | return; |
| 1249 | } |
| 1250 | |
| 1251 | if ((len % 2) != 0 || unhexify (mon, own_buf + 6, len / 2) != len / 2) |
| 1252 | { |
| 1253 | write_enn (own_buf); |
| 1254 | free (mon); |
| 1255 | return; |
| 1256 | } |
| 1257 | mon[len / 2] = '\0'; |
| 1258 | |
| 1259 | write_ok (own_buf); |
| 1260 | |
| 1261 | if (the_target->handle_monitor_command == NULL |
| 1262 | || (*the_target->handle_monitor_command) (mon) == 0) |
| 1263 | /* Default processing. */ |
| 1264 | handle_monitor_command (mon); |
| 1265 | |
| 1266 | free (mon); |
| 1267 | return; |
| 1268 | } |
| 1269 | |
| 1270 | if (strncmp ("qSearch:memory:", own_buf, sizeof ("qSearch:memory:") - 1) == 0) |
| 1271 | { |
| 1272 | require_running (own_buf); |
| 1273 | handle_search_memory (own_buf, packet_len); |
| 1274 | return; |
| 1275 | } |
| 1276 | |
| 1277 | if (strcmp (own_buf, "qAttached") == 0 |
| 1278 | || strncmp (own_buf, "qAttached:", sizeof ("qAttached:") - 1) == 0) |
| 1279 | { |
| 1280 | struct process_info *process; |
| 1281 | |
| 1282 | if (own_buf[sizeof ("qAttached") - 1]) |
| 1283 | { |
| 1284 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); |
| 1285 | process = (struct process_info *) |
| 1286 | find_inferior_id (&all_processes, pid_to_ptid (pid)); |
| 1287 | } |
| 1288 | else |
| 1289 | { |
| 1290 | require_running (own_buf); |
| 1291 | process = current_process (); |
| 1292 | } |
| 1293 | |
| 1294 | if (process == NULL) |
| 1295 | { |
| 1296 | write_enn (own_buf); |
| 1297 | return; |
| 1298 | } |
| 1299 | |
| 1300 | strcpy (own_buf, process->attached ? "1" : "0"); |
| 1301 | return; |
| 1302 | } |
| 1303 | |
| 1304 | /* Otherwise we didn't know what packet it was. Say we didn't |
| 1305 | understand it. */ |
| 1306 | own_buf[0] = 0; |
| 1307 | } |
| 1308 | |
| 1309 | /* Parse vCont packets. */ |
| 1310 | void |
| 1311 | handle_v_cont (char *own_buf) |
| 1312 | { |
| 1313 | char *p, *q; |
| 1314 | int n = 0, i = 0; |
| 1315 | struct thread_resume *resume_info; |
| 1316 | struct thread_resume default_action = {{0}}; |
| 1317 | |
| 1318 | /* Count the number of semicolons in the packet. There should be one |
| 1319 | for every action. */ |
| 1320 | p = &own_buf[5]; |
| 1321 | while (p) |
| 1322 | { |
| 1323 | n++; |
| 1324 | p++; |
| 1325 | p = strchr (p, ';'); |
| 1326 | } |
| 1327 | |
| 1328 | resume_info = malloc (n * sizeof (resume_info[0])); |
| 1329 | if (resume_info == NULL) |
| 1330 | goto err; |
| 1331 | |
| 1332 | p = &own_buf[5]; |
| 1333 | while (*p) |
| 1334 | { |
| 1335 | p++; |
| 1336 | |
| 1337 | if (p[0] == 's' || p[0] == 'S') |
| 1338 | resume_info[i].kind = resume_step; |
| 1339 | else if (p[0] == 'c' || p[0] == 'C') |
| 1340 | resume_info[i].kind = resume_continue; |
| 1341 | else if (p[0] == 't') |
| 1342 | resume_info[i].kind = resume_stop; |
| 1343 | else |
| 1344 | goto err; |
| 1345 | |
| 1346 | if (p[0] == 'S' || p[0] == 'C') |
| 1347 | { |
| 1348 | int sig; |
| 1349 | sig = strtol (p + 1, &q, 16); |
| 1350 | if (p == q) |
| 1351 | goto err; |
| 1352 | p = q; |
| 1353 | |
| 1354 | if (!target_signal_to_host_p (sig)) |
| 1355 | goto err; |
| 1356 | resume_info[i].sig = target_signal_to_host (sig); |
| 1357 | } |
| 1358 | else |
| 1359 | { |
| 1360 | resume_info[i].sig = 0; |
| 1361 | p = p + 1; |
| 1362 | } |
| 1363 | |
| 1364 | if (p[0] == 0) |
| 1365 | { |
| 1366 | resume_info[i].thread = minus_one_ptid; |
| 1367 | default_action = resume_info[i]; |
| 1368 | |
| 1369 | /* Note: we don't increment i here, we'll overwrite this entry |
| 1370 | the next time through. */ |
| 1371 | } |
| 1372 | else if (p[0] == ':') |
| 1373 | { |
| 1374 | ptid_t ptid = read_ptid (p + 1, &q); |
| 1375 | |
| 1376 | if (p == q) |
| 1377 | goto err; |
| 1378 | p = q; |
| 1379 | if (p[0] != ';' && p[0] != 0) |
| 1380 | goto err; |
| 1381 | |
| 1382 | resume_info[i].thread = ptid; |
| 1383 | |
| 1384 | i++; |
| 1385 | } |
| 1386 | } |
| 1387 | |
| 1388 | if (i < n) |
| 1389 | resume_info[i] = default_action; |
| 1390 | |
| 1391 | /* Still used in occasional places in the backend. */ |
| 1392 | if (n == 1 |
| 1393 | && !ptid_equal (resume_info[0].thread, minus_one_ptid) |
| 1394 | && resume_info[0].kind != resume_stop) |
| 1395 | cont_thread = resume_info[0].thread; |
| 1396 | else |
| 1397 | cont_thread = minus_one_ptid; |
| 1398 | set_desired_inferior (0); |
| 1399 | |
| 1400 | if (!non_stop) |
| 1401 | enable_async_io (); |
| 1402 | |
| 1403 | (*the_target->resume) (resume_info, n); |
| 1404 | |
| 1405 | free (resume_info); |
| 1406 | |
| 1407 | if (non_stop) |
| 1408 | write_ok (own_buf); |
| 1409 | else |
| 1410 | { |
| 1411 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
| 1412 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
| 1413 | disable_async_io (); |
| 1414 | } |
| 1415 | return; |
| 1416 | |
| 1417 | err: |
| 1418 | write_enn (own_buf); |
| 1419 | free (resume_info); |
| 1420 | return; |
| 1421 | } |
| 1422 | |
| 1423 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
| 1424 | int |
| 1425 | handle_v_attach (char *own_buf) |
| 1426 | { |
| 1427 | int pid; |
| 1428 | |
| 1429 | pid = strtol (own_buf + 8, NULL, 16); |
| 1430 | if (pid != 0 && attach_inferior (pid) == 0) |
| 1431 | { |
| 1432 | /* Don't report shared library events after attaching, even if |
| 1433 | some libraries are preloaded. GDB will always poll the |
| 1434 | library list. Avoids the "stopped by shared library event" |
| 1435 | notice on the GDB side. */ |
| 1436 | dlls_changed = 0; |
| 1437 | |
| 1438 | if (non_stop) |
| 1439 | { |
| 1440 | /* In non-stop, we don't send a resume reply. Stop events |
| 1441 | will follow up using the normal notification |
| 1442 | mechanism. */ |
| 1443 | write_ok (own_buf); |
| 1444 | } |
| 1445 | else |
| 1446 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
| 1447 | |
| 1448 | return 1; |
| 1449 | } |
| 1450 | else |
| 1451 | { |
| 1452 | write_enn (own_buf); |
| 1453 | return 0; |
| 1454 | } |
| 1455 | } |
| 1456 | |
| 1457 | /* Run a new program. Return 1 if successful, 0 if failure. */ |
| 1458 | static int |
| 1459 | handle_v_run (char *own_buf) |
| 1460 | { |
| 1461 | char *p, *next_p, **new_argv; |
| 1462 | int i, new_argc; |
| 1463 | |
| 1464 | new_argc = 0; |
| 1465 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) |
| 1466 | { |
| 1467 | p++; |
| 1468 | new_argc++; |
| 1469 | } |
| 1470 | |
| 1471 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
| 1472 | if (new_argv == NULL) |
| 1473 | { |
| 1474 | write_enn (own_buf); |
| 1475 | return 0; |
| 1476 | } |
| 1477 | |
| 1478 | i = 0; |
| 1479 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) |
| 1480 | { |
| 1481 | next_p = strchr (p, ';'); |
| 1482 | if (next_p == NULL) |
| 1483 | next_p = p + strlen (p); |
| 1484 | |
| 1485 | if (i == 0 && p == next_p) |
| 1486 | new_argv[i] = NULL; |
| 1487 | else |
| 1488 | { |
| 1489 | /* FIXME: Fail request if out of memory instead of dying. */ |
| 1490 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
| 1491 | unhexify (new_argv[i], p, (next_p - p) / 2); |
| 1492 | new_argv[i][(next_p - p) / 2] = '\0'; |
| 1493 | } |
| 1494 | |
| 1495 | if (*next_p) |
| 1496 | next_p++; |
| 1497 | i++; |
| 1498 | } |
| 1499 | new_argv[i] = NULL; |
| 1500 | |
| 1501 | if (new_argv[0] == NULL) |
| 1502 | { |
| 1503 | /* GDB didn't specify a program to run. Use the program from the |
| 1504 | last run with the new argument list. */ |
| 1505 | |
| 1506 | if (program_argv == NULL) |
| 1507 | { |
| 1508 | /* FIXME: new_argv memory leak */ |
| 1509 | write_enn (own_buf); |
| 1510 | return 0; |
| 1511 | } |
| 1512 | |
| 1513 | new_argv[0] = strdup (program_argv[0]); |
| 1514 | if (new_argv[0] == NULL) |
| 1515 | { |
| 1516 | /* FIXME: new_argv memory leak */ |
| 1517 | write_enn (own_buf); |
| 1518 | return 0; |
| 1519 | } |
| 1520 | } |
| 1521 | |
| 1522 | /* Free the old argv and install the new one. */ |
| 1523 | freeargv (program_argv); |
| 1524 | program_argv = new_argv; |
| 1525 | |
| 1526 | start_inferior (program_argv); |
| 1527 | if (last_status.kind == TARGET_WAITKIND_STOPPED) |
| 1528 | { |
| 1529 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
| 1530 | |
| 1531 | /* In non-stop, sending a resume reply doesn't set the general |
| 1532 | thread, but GDB assumes a vRun sets it (this is so GDB can |
| 1533 | query which is the main thread of the new inferior. */ |
| 1534 | if (non_stop) |
| 1535 | general_thread = last_ptid; |
| 1536 | |
| 1537 | return 1; |
| 1538 | } |
| 1539 | else |
| 1540 | { |
| 1541 | write_enn (own_buf); |
| 1542 | return 0; |
| 1543 | } |
| 1544 | } |
| 1545 | |
| 1546 | /* Kill process. Return 1 if successful, 0 if failure. */ |
| 1547 | int |
| 1548 | handle_v_kill (char *own_buf) |
| 1549 | { |
| 1550 | int pid; |
| 1551 | char *p = &own_buf[6]; |
| 1552 | if (multi_process) |
| 1553 | pid = strtol (p, NULL, 16); |
| 1554 | else |
| 1555 | pid = signal_pid; |
| 1556 | if (pid != 0 && kill_inferior (pid) == 0) |
| 1557 | { |
| 1558 | last_status.kind = TARGET_WAITKIND_SIGNALLED; |
| 1559 | last_status.value.sig = TARGET_SIGNAL_KILL; |
| 1560 | last_ptid = pid_to_ptid (pid); |
| 1561 | discard_queued_stop_replies (pid); |
| 1562 | write_ok (own_buf); |
| 1563 | return 1; |
| 1564 | } |
| 1565 | else |
| 1566 | { |
| 1567 | write_enn (own_buf); |
| 1568 | return 0; |
| 1569 | } |
| 1570 | } |
| 1571 | |
| 1572 | /* Handle a 'vStopped' packet. */ |
| 1573 | static void |
| 1574 | handle_v_stopped (char *own_buf) |
| 1575 | { |
| 1576 | /* If we're waiting for GDB to acknowledge a pending stop reply, |
| 1577 | consider that done. */ |
| 1578 | if (notif_queue) |
| 1579 | { |
| 1580 | struct vstop_notif *head; |
| 1581 | |
| 1582 | if (remote_debug) |
| 1583 | fprintf (stderr, "vStopped: acking %s\n", |
| 1584 | target_pid_to_str (notif_queue->ptid)); |
| 1585 | |
| 1586 | head = notif_queue; |
| 1587 | notif_queue = notif_queue->next; |
| 1588 | free (head); |
| 1589 | } |
| 1590 | |
| 1591 | /* Push another stop reply, or if there are no more left, an OK. */ |
| 1592 | send_next_stop_reply (own_buf); |
| 1593 | } |
| 1594 | |
| 1595 | /* Handle all of the extended 'v' packets. */ |
| 1596 | void |
| 1597 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
| 1598 | { |
| 1599 | if (!disable_packet_vCont) |
| 1600 | { |
| 1601 | if (strncmp (own_buf, "vCont;", 6) == 0) |
| 1602 | { |
| 1603 | require_running (own_buf); |
| 1604 | handle_v_cont (own_buf); |
| 1605 | return; |
| 1606 | } |
| 1607 | |
| 1608 | if (strncmp (own_buf, "vCont?", 6) == 0) |
| 1609 | { |
| 1610 | strcpy (own_buf, "vCont;c;C;s;S;t"); |
| 1611 | return; |
| 1612 | } |
| 1613 | } |
| 1614 | |
| 1615 | if (strncmp (own_buf, "vFile:", 6) == 0 |
| 1616 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
| 1617 | return; |
| 1618 | |
| 1619 | if (strncmp (own_buf, "vAttach;", 8) == 0) |
| 1620 | { |
| 1621 | if (!multi_process && target_running ()) |
| 1622 | { |
| 1623 | fprintf (stderr, "Already debugging a process\n"); |
| 1624 | write_enn (own_buf); |
| 1625 | return; |
| 1626 | } |
| 1627 | handle_v_attach (own_buf); |
| 1628 | return; |
| 1629 | } |
| 1630 | |
| 1631 | if (strncmp (own_buf, "vRun;", 5) == 0) |
| 1632 | { |
| 1633 | if (!multi_process && target_running ()) |
| 1634 | { |
| 1635 | fprintf (stderr, "Already debugging a process\n"); |
| 1636 | write_enn (own_buf); |
| 1637 | return; |
| 1638 | } |
| 1639 | handle_v_run (own_buf); |
| 1640 | return; |
| 1641 | } |
| 1642 | |
| 1643 | if (strncmp (own_buf, "vKill;", 6) == 0) |
| 1644 | { |
| 1645 | if (!target_running ()) |
| 1646 | { |
| 1647 | fprintf (stderr, "No process to kill\n"); |
| 1648 | write_enn (own_buf); |
| 1649 | return; |
| 1650 | } |
| 1651 | handle_v_kill (own_buf); |
| 1652 | return; |
| 1653 | } |
| 1654 | |
| 1655 | if (strncmp (own_buf, "vStopped", 8) == 0) |
| 1656 | { |
| 1657 | handle_v_stopped (own_buf); |
| 1658 | return; |
| 1659 | } |
| 1660 | |
| 1661 | /* Otherwise we didn't know what packet it was. Say we didn't |
| 1662 | understand it. */ |
| 1663 | own_buf[0] = 0; |
| 1664 | return; |
| 1665 | } |
| 1666 | |
| 1667 | /* Resume inferior and wait for another event. In non-stop mode, |
| 1668 | don't really wait here, but return immediatelly to the event |
| 1669 | loop. */ |
| 1670 | void |
| 1671 | myresume (char *own_buf, int step, int sig) |
| 1672 | { |
| 1673 | struct thread_resume resume_info[2]; |
| 1674 | int n = 0; |
| 1675 | int valid_cont_thread; |
| 1676 | |
| 1677 | set_desired_inferior (0); |
| 1678 | |
| 1679 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
| 1680 | && !ptid_equal (cont_thread, minus_one_ptid)); |
| 1681 | |
| 1682 | if (step || sig || valid_cont_thread) |
| 1683 | { |
| 1684 | resume_info[0].thread |
| 1685 | = ((struct inferior_list_entry *) current_inferior)->id; |
| 1686 | if (step) |
| 1687 | resume_info[0].kind = resume_step; |
| 1688 | else |
| 1689 | resume_info[0].kind = resume_continue; |
| 1690 | resume_info[0].sig = sig; |
| 1691 | n++; |
| 1692 | } |
| 1693 | |
| 1694 | if (!valid_cont_thread) |
| 1695 | { |
| 1696 | resume_info[n].thread = minus_one_ptid; |
| 1697 | resume_info[n].kind = resume_continue; |
| 1698 | resume_info[n].sig = 0; |
| 1699 | n++; |
| 1700 | } |
| 1701 | |
| 1702 | if (!non_stop) |
| 1703 | enable_async_io (); |
| 1704 | |
| 1705 | (*the_target->resume) (resume_info, n); |
| 1706 | |
| 1707 | if (non_stop) |
| 1708 | write_ok (own_buf); |
| 1709 | else |
| 1710 | { |
| 1711 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
| 1712 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
| 1713 | disable_async_io (); |
| 1714 | } |
| 1715 | } |
| 1716 | |
| 1717 | /* Callback for for_each_inferior. Make a new stop reply for each |
| 1718 | stopped thread. */ |
| 1719 | |
| 1720 | static int |
| 1721 | queue_stop_reply_callback (struct inferior_list_entry *entry, void *arg) |
| 1722 | { |
| 1723 | int pid = * (int *) arg; |
| 1724 | |
| 1725 | if (pid == -1 |
| 1726 | || ptid_get_pid (entry->id) == pid) |
| 1727 | { |
| 1728 | struct target_waitstatus status; |
| 1729 | |
| 1730 | status.kind = TARGET_WAITKIND_STOPPED; |
| 1731 | status.value.sig = TARGET_SIGNAL_TRAP; |
| 1732 | |
| 1733 | /* Pass the last stop reply back to GDB, but don't notify. */ |
| 1734 | queue_stop_reply (entry->id, &status); |
| 1735 | } |
| 1736 | |
| 1737 | return 0; |
| 1738 | } |
| 1739 | |
| 1740 | /* Status handler for the '?' packet. */ |
| 1741 | |
| 1742 | static void |
| 1743 | handle_status (char *own_buf) |
| 1744 | { |
| 1745 | struct target_waitstatus status; |
| 1746 | status.kind = TARGET_WAITKIND_STOPPED; |
| 1747 | status.value.sig = TARGET_SIGNAL_TRAP; |
| 1748 | |
| 1749 | /* In non-stop mode, we must send a stop reply for each stopped |
| 1750 | thread. In all-stop mode, just send one for the first stopped |
| 1751 | thread we find. */ |
| 1752 | |
| 1753 | if (non_stop) |
| 1754 | { |
| 1755 | int pid = -1; |
| 1756 | discard_queued_stop_replies (pid); |
| 1757 | find_inferior (&all_threads, queue_stop_reply_callback, &pid); |
| 1758 | |
| 1759 | /* The first is sent immediatly. OK is sent if there is no |
| 1760 | stopped thread, which is the same handling of the vStopped |
| 1761 | packet (by design). */ |
| 1762 | send_next_stop_reply (own_buf); |
| 1763 | } |
| 1764 | else |
| 1765 | { |
| 1766 | if (all_threads.head) |
| 1767 | prepare_resume_reply (own_buf, |
| 1768 | all_threads.head->id, &status); |
| 1769 | else |
| 1770 | strcpy (own_buf, "W00"); |
| 1771 | } |
| 1772 | } |
| 1773 | |
| 1774 | static void |
| 1775 | gdbserver_version (void) |
| 1776 | { |
| 1777 | printf ("GNU gdbserver %s%s\n" |
| 1778 | "Copyright (C) 2010 Free Software Foundation, Inc.\n" |
| 1779 | "gdbserver is free software, covered by the GNU General Public License.\n" |
| 1780 | "This gdbserver was configured as \"%s\"\n", |
| 1781 | PKGVERSION, version, host_name); |
| 1782 | } |
| 1783 | |
| 1784 | static void |
| 1785 | gdbserver_usage (FILE *stream) |
| 1786 | { |
| 1787 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
| 1788 | "\tgdbserver [OPTIONS] --attach COMM PID\n" |
| 1789 | "\tgdbserver [OPTIONS] --multi COMM\n" |
| 1790 | "\n" |
| 1791 | "COMM may either be a tty device (for serial debugging), or \n" |
| 1792 | "HOST:PORT to listen for a TCP connection.\n" |
| 1793 | "\n" |
| 1794 | "Options:\n" |
| 1795 | " --debug Enable general debugging output.\n" |
| 1796 | " --remote-debug Enable remote protocol debugging output.\n" |
| 1797 | " --version Display version information and exit.\n" |
| 1798 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n"); |
| 1799 | if (REPORT_BUGS_TO[0] && stream == stdout) |
| 1800 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); |
| 1801 | } |
| 1802 | |
| 1803 | static void |
| 1804 | gdbserver_show_disableable (FILE *stream) |
| 1805 | { |
| 1806 | fprintf (stream, "Disableable packets:\n" |
| 1807 | " vCont \tAll vCont packets\n" |
| 1808 | " qC \tQuerying the current thread\n" |
| 1809 | " qfThreadInfo\tThread listing\n" |
| 1810 | " Tthread \tPassing the thread specifier in the T stop reply packet\n" |
| 1811 | " threads \tAll of the above\n"); |
| 1812 | } |
| 1813 | |
| 1814 | |
| 1815 | #undef require_running |
| 1816 | #define require_running(BUF) \ |
| 1817 | if (!target_running ()) \ |
| 1818 | { \ |
| 1819 | write_enn (BUF); \ |
| 1820 | break; \ |
| 1821 | } |
| 1822 | |
| 1823 | static int |
| 1824 | first_thread_of (struct inferior_list_entry *entry, void *args) |
| 1825 | { |
| 1826 | int pid = * (int *) args; |
| 1827 | |
| 1828 | if (ptid_get_pid (entry->id) == pid) |
| 1829 | return 1; |
| 1830 | |
| 1831 | return 0; |
| 1832 | } |
| 1833 | |
| 1834 | static void |
| 1835 | kill_inferior_callback (struct inferior_list_entry *entry) |
| 1836 | { |
| 1837 | struct process_info *process = (struct process_info *) entry; |
| 1838 | int pid = ptid_get_pid (process->head.id); |
| 1839 | |
| 1840 | kill_inferior (pid); |
| 1841 | discard_queued_stop_replies (pid); |
| 1842 | } |
| 1843 | |
| 1844 | /* Callback for for_each_inferior to detach or kill the inferior, |
| 1845 | depending on whether we attached to it or not. |
| 1846 | We inform the user whether we're detaching or killing the process |
| 1847 | as this is only called when gdbserver is about to exit. */ |
| 1848 | |
| 1849 | static void |
| 1850 | detach_or_kill_inferior_callback (struct inferior_list_entry *entry) |
| 1851 | { |
| 1852 | struct process_info *process = (struct process_info *) entry; |
| 1853 | int pid = ptid_get_pid (process->head.id); |
| 1854 | |
| 1855 | if (process->attached) |
| 1856 | detach_inferior (pid); |
| 1857 | else |
| 1858 | kill_inferior (pid); |
| 1859 | |
| 1860 | discard_queued_stop_replies (pid); |
| 1861 | } |
| 1862 | |
| 1863 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
| 1864 | the pids of started inferiors. */ |
| 1865 | |
| 1866 | static void |
| 1867 | print_started_pid (struct inferior_list_entry *entry) |
| 1868 | { |
| 1869 | struct process_info *process = (struct process_info *) entry; |
| 1870 | |
| 1871 | if (! process->attached) |
| 1872 | { |
| 1873 | int pid = ptid_get_pid (process->head.id); |
| 1874 | fprintf (stderr, " %d", pid); |
| 1875 | } |
| 1876 | } |
| 1877 | |
| 1878 | /* for_each_inferior callback for detach_or_kill_for_exit to print |
| 1879 | the pids of attached inferiors. */ |
| 1880 | |
| 1881 | static void |
| 1882 | print_attached_pid (struct inferior_list_entry *entry) |
| 1883 | { |
| 1884 | struct process_info *process = (struct process_info *) entry; |
| 1885 | |
| 1886 | if (process->attached) |
| 1887 | { |
| 1888 | int pid = ptid_get_pid (process->head.id); |
| 1889 | fprintf (stderr, " %d", pid); |
| 1890 | } |
| 1891 | } |
| 1892 | |
| 1893 | /* Call this when exiting gdbserver with possible inferiors that need |
| 1894 | to be killed or detached from. */ |
| 1895 | |
| 1896 | static void |
| 1897 | detach_or_kill_for_exit (void) |
| 1898 | { |
| 1899 | /* First print a list of the inferiors we will be killing/detaching. |
| 1900 | This is to assist the user, for example, in case the inferior unexpectedly |
| 1901 | dies after we exit: did we screw up or did the inferior exit on its own? |
| 1902 | Having this info will save some head-scratching. */ |
| 1903 | |
| 1904 | if (have_started_inferiors_p ()) |
| 1905 | { |
| 1906 | fprintf (stderr, "Killing process(es):"); |
| 1907 | for_each_inferior (&all_processes, print_started_pid); |
| 1908 | fprintf (stderr, "\n"); |
| 1909 | } |
| 1910 | if (have_attached_inferiors_p ()) |
| 1911 | { |
| 1912 | fprintf (stderr, "Detaching process(es):"); |
| 1913 | for_each_inferior (&all_processes, print_attached_pid); |
| 1914 | fprintf (stderr, "\n"); |
| 1915 | } |
| 1916 | |
| 1917 | /* Now we can kill or detach the inferiors. */ |
| 1918 | |
| 1919 | for_each_inferior (&all_processes, detach_or_kill_inferior_callback); |
| 1920 | } |
| 1921 | |
| 1922 | static void |
| 1923 | join_inferiors_callback (struct inferior_list_entry *entry) |
| 1924 | { |
| 1925 | struct process_info *process = (struct process_info *) entry; |
| 1926 | |
| 1927 | /* If we are attached, then we can exit. Otherwise, we need to hang |
| 1928 | around doing nothing, until the child is gone. */ |
| 1929 | if (!process->attached) |
| 1930 | join_inferior (ptid_get_pid (process->head.id)); |
| 1931 | } |
| 1932 | |
| 1933 | int |
| 1934 | main (int argc, char *argv[]) |
| 1935 | { |
| 1936 | int bad_attach; |
| 1937 | int pid; |
| 1938 | char *arg_end, *port; |
| 1939 | char **next_arg = &argv[1]; |
| 1940 | int multi_mode = 0; |
| 1941 | int attach = 0; |
| 1942 | int was_running; |
| 1943 | |
| 1944 | while (*next_arg != NULL && **next_arg == '-') |
| 1945 | { |
| 1946 | if (strcmp (*next_arg, "--version") == 0) |
| 1947 | { |
| 1948 | gdbserver_version (); |
| 1949 | exit (0); |
| 1950 | } |
| 1951 | else if (strcmp (*next_arg, "--help") == 0) |
| 1952 | { |
| 1953 | gdbserver_usage (stdout); |
| 1954 | exit (0); |
| 1955 | } |
| 1956 | else if (strcmp (*next_arg, "--attach") == 0) |
| 1957 | attach = 1; |
| 1958 | else if (strcmp (*next_arg, "--multi") == 0) |
| 1959 | multi_mode = 1; |
| 1960 | else if (strcmp (*next_arg, "--wrapper") == 0) |
| 1961 | { |
| 1962 | next_arg++; |
| 1963 | |
| 1964 | wrapper_argv = next_arg; |
| 1965 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) |
| 1966 | next_arg++; |
| 1967 | |
| 1968 | if (next_arg == wrapper_argv || *next_arg == NULL) |
| 1969 | { |
| 1970 | gdbserver_usage (stderr); |
| 1971 | exit (1); |
| 1972 | } |
| 1973 | |
| 1974 | /* Consume the "--". */ |
| 1975 | *next_arg = NULL; |
| 1976 | } |
| 1977 | else if (strcmp (*next_arg, "--debug") == 0) |
| 1978 | debug_threads = 1; |
| 1979 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
| 1980 | remote_debug = 1; |
| 1981 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
| 1982 | { |
| 1983 | gdbserver_show_disableable (stdout); |
| 1984 | exit (0); |
| 1985 | } |
| 1986 | else if (strncmp (*next_arg, |
| 1987 | "--disable-packet=", |
| 1988 | sizeof ("--disable-packet=") - 1) == 0) |
| 1989 | { |
| 1990 | char *packets, *tok; |
| 1991 | |
| 1992 | packets = *next_arg += sizeof ("--disable-packet=") - 1; |
| 1993 | for (tok = strtok (packets, ","); |
| 1994 | tok != NULL; |
| 1995 | tok = strtok (NULL, ",")) |
| 1996 | { |
| 1997 | if (strcmp ("vCont", tok) == 0) |
| 1998 | disable_packet_vCont = 1; |
| 1999 | else if (strcmp ("Tthread", tok) == 0) |
| 2000 | disable_packet_Tthread = 1; |
| 2001 | else if (strcmp ("qC", tok) == 0) |
| 2002 | disable_packet_qC = 1; |
| 2003 | else if (strcmp ("qfThreadInfo", tok) == 0) |
| 2004 | disable_packet_qfThreadInfo = 1; |
| 2005 | else if (strcmp ("threads", tok) == 0) |
| 2006 | { |
| 2007 | disable_packet_vCont = 1; |
| 2008 | disable_packet_Tthread = 1; |
| 2009 | disable_packet_qC = 1; |
| 2010 | disable_packet_qfThreadInfo = 1; |
| 2011 | } |
| 2012 | else |
| 2013 | { |
| 2014 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", |
| 2015 | tok); |
| 2016 | gdbserver_show_disableable (stderr); |
| 2017 | exit (1); |
| 2018 | } |
| 2019 | } |
| 2020 | } |
| 2021 | else |
| 2022 | { |
| 2023 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); |
| 2024 | exit (1); |
| 2025 | } |
| 2026 | |
| 2027 | next_arg++; |
| 2028 | continue; |
| 2029 | } |
| 2030 | |
| 2031 | if (setjmp (toplevel)) |
| 2032 | { |
| 2033 | fprintf (stderr, "Exiting\n"); |
| 2034 | exit (1); |
| 2035 | } |
| 2036 | |
| 2037 | port = *next_arg; |
| 2038 | next_arg++; |
| 2039 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) |
| 2040 | { |
| 2041 | gdbserver_usage (stderr); |
| 2042 | exit (1); |
| 2043 | } |
| 2044 | |
| 2045 | bad_attach = 0; |
| 2046 | pid = 0; |
| 2047 | |
| 2048 | /* --attach used to come after PORT, so allow it there for |
| 2049 | compatibility. */ |
| 2050 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) |
| 2051 | { |
| 2052 | attach = 1; |
| 2053 | next_arg++; |
| 2054 | } |
| 2055 | |
| 2056 | if (attach |
| 2057 | && (*next_arg == NULL |
| 2058 | || (*next_arg)[0] == '\0' |
| 2059 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 |
| 2060 | || *arg_end != '\0' |
| 2061 | || next_arg[1] != NULL)) |
| 2062 | bad_attach = 1; |
| 2063 | |
| 2064 | if (bad_attach) |
| 2065 | { |
| 2066 | gdbserver_usage (stderr); |
| 2067 | exit (1); |
| 2068 | } |
| 2069 | |
| 2070 | initialize_inferiors (); |
| 2071 | initialize_async_io (); |
| 2072 | initialize_low (); |
| 2073 | |
| 2074 | own_buf = xmalloc (PBUFSIZ + 1); |
| 2075 | mem_buf = xmalloc (PBUFSIZ); |
| 2076 | |
| 2077 | if (pid == 0 && *next_arg != NULL) |
| 2078 | { |
| 2079 | int i, n; |
| 2080 | |
| 2081 | n = argc - (next_arg - argv); |
| 2082 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
| 2083 | for (i = 0; i < n; i++) |
| 2084 | program_argv[i] = xstrdup (next_arg[i]); |
| 2085 | program_argv[i] = NULL; |
| 2086 | |
| 2087 | /* Wait till we are at first instruction in program. */ |
| 2088 | start_inferior (program_argv); |
| 2089 | |
| 2090 | /* We are now (hopefully) stopped at the first instruction of |
| 2091 | the target process. This assumes that the target process was |
| 2092 | successfully created. */ |
| 2093 | } |
| 2094 | else if (pid != 0) |
| 2095 | { |
| 2096 | if (attach_inferior (pid) == -1) |
| 2097 | error ("Attaching not supported on this target"); |
| 2098 | |
| 2099 | /* Otherwise succeeded. */ |
| 2100 | } |
| 2101 | else |
| 2102 | { |
| 2103 | last_status.kind = TARGET_WAITKIND_EXITED; |
| 2104 | last_status.value.integer = 0; |
| 2105 | last_ptid = minus_one_ptid; |
| 2106 | } |
| 2107 | |
| 2108 | /* Don't report shared library events on the initial connection, |
| 2109 | even if some libraries are preloaded. Avoids the "stopped by |
| 2110 | shared library event" notice on gdb side. */ |
| 2111 | dlls_changed = 0; |
| 2112 | |
| 2113 | if (setjmp (toplevel)) |
| 2114 | { |
| 2115 | detach_or_kill_for_exit (); |
| 2116 | exit (1); |
| 2117 | } |
| 2118 | |
| 2119 | if (last_status.kind == TARGET_WAITKIND_EXITED |
| 2120 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) |
| 2121 | was_running = 0; |
| 2122 | else |
| 2123 | was_running = 1; |
| 2124 | |
| 2125 | if (!was_running && !multi_mode) |
| 2126 | { |
| 2127 | fprintf (stderr, "No program to debug. GDBserver exiting.\n"); |
| 2128 | exit (1); |
| 2129 | } |
| 2130 | |
| 2131 | while (1) |
| 2132 | { |
| 2133 | noack_mode = 0; |
| 2134 | multi_process = 0; |
| 2135 | non_stop = 0; |
| 2136 | |
| 2137 | remote_open (port); |
| 2138 | |
| 2139 | if (setjmp (toplevel) != 0) |
| 2140 | { |
| 2141 | /* An error occurred. */ |
| 2142 | if (response_needed) |
| 2143 | { |
| 2144 | write_enn (own_buf); |
| 2145 | putpkt (own_buf); |
| 2146 | } |
| 2147 | } |
| 2148 | |
| 2149 | /* Wait for events. This will return when all event sources are |
| 2150 | removed from the event loop. */ |
| 2151 | start_event_loop (); |
| 2152 | |
| 2153 | /* If an exit was requested (using the "monitor exit" command), |
| 2154 | terminate now. The only other way to get here is for |
| 2155 | getpkt to fail; close the connection and reopen it at the |
| 2156 | top of the loop. */ |
| 2157 | |
| 2158 | if (exit_requested) |
| 2159 | { |
| 2160 | detach_or_kill_for_exit (); |
| 2161 | exit (0); |
| 2162 | } |
| 2163 | else |
| 2164 | fprintf (stderr, "Remote side has terminated connection. " |
| 2165 | "GDBserver will reopen the connection.\n"); |
| 2166 | } |
| 2167 | } |
| 2168 | |
| 2169 | /* Event loop callback that handles a serial event. The first byte in |
| 2170 | the serial buffer gets us here. We expect characters to arrive at |
| 2171 | a brisk pace, so we read the rest of the packet with a blocking |
| 2172 | getpkt call. */ |
| 2173 | |
| 2174 | static void |
| 2175 | process_serial_event (void) |
| 2176 | { |
| 2177 | char ch; |
| 2178 | int i = 0; |
| 2179 | int signal; |
| 2180 | unsigned int len; |
| 2181 | CORE_ADDR mem_addr; |
| 2182 | int pid; |
| 2183 | unsigned char sig; |
| 2184 | int packet_len; |
| 2185 | int new_packet_len = -1; |
| 2186 | |
| 2187 | /* Used to decide when gdbserver should exit in |
| 2188 | multi-mode/remote. */ |
| 2189 | static int have_ran = 0; |
| 2190 | |
| 2191 | if (!have_ran) |
| 2192 | have_ran = target_running (); |
| 2193 | |
| 2194 | disable_async_io (); |
| 2195 | |
| 2196 | response_needed = 0; |
| 2197 | packet_len = getpkt (own_buf); |
| 2198 | if (packet_len <= 0) |
| 2199 | { |
| 2200 | target_async (0); |
| 2201 | remote_close (); |
| 2202 | return; |
| 2203 | } |
| 2204 | response_needed = 1; |
| 2205 | |
| 2206 | i = 0; |
| 2207 | ch = own_buf[i++]; |
| 2208 | switch (ch) |
| 2209 | { |
| 2210 | case 'q': |
| 2211 | handle_query (own_buf, packet_len, &new_packet_len); |
| 2212 | break; |
| 2213 | case 'Q': |
| 2214 | handle_general_set (own_buf); |
| 2215 | break; |
| 2216 | case 'D': |
| 2217 | require_running (own_buf); |
| 2218 | |
| 2219 | if (multi_process) |
| 2220 | { |
| 2221 | i++; /* skip ';' */ |
| 2222 | pid = strtol (&own_buf[i], NULL, 16); |
| 2223 | } |
| 2224 | else |
| 2225 | pid = |
| 2226 | ptid_get_pid (((struct inferior_list_entry *) current_inferior)->id); |
| 2227 | |
| 2228 | fprintf (stderr, "Detaching from process %d\n", pid); |
| 2229 | if (detach_inferior (pid) != 0) |
| 2230 | write_enn (own_buf); |
| 2231 | else |
| 2232 | { |
| 2233 | discard_queued_stop_replies (pid); |
| 2234 | write_ok (own_buf); |
| 2235 | |
| 2236 | if (extended_protocol) |
| 2237 | { |
| 2238 | /* Treat this like a normal program exit. */ |
| 2239 | last_status.kind = TARGET_WAITKIND_EXITED; |
| 2240 | last_status.value.integer = 0; |
| 2241 | last_ptid = pid_to_ptid (pid); |
| 2242 | |
| 2243 | current_inferior = NULL; |
| 2244 | } |
| 2245 | else |
| 2246 | { |
| 2247 | putpkt (own_buf); |
| 2248 | remote_close (); |
| 2249 | |
| 2250 | /* If we are attached, then we can exit. Otherwise, we |
| 2251 | need to hang around doing nothing, until the child is |
| 2252 | gone. */ |
| 2253 | for_each_inferior (&all_processes, |
| 2254 | join_inferiors_callback); |
| 2255 | exit (0); |
| 2256 | } |
| 2257 | } |
| 2258 | break; |
| 2259 | case '!': |
| 2260 | extended_protocol = 1; |
| 2261 | write_ok (own_buf); |
| 2262 | break; |
| 2263 | case '?': |
| 2264 | handle_status (own_buf); |
| 2265 | break; |
| 2266 | case 'H': |
| 2267 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') |
| 2268 | { |
| 2269 | ptid_t gdb_id, thread_id; |
| 2270 | int pid; |
| 2271 | |
| 2272 | require_running (own_buf); |
| 2273 | |
| 2274 | gdb_id = read_ptid (&own_buf[2], NULL); |
| 2275 | |
| 2276 | pid = ptid_get_pid (gdb_id); |
| 2277 | |
| 2278 | if (ptid_equal (gdb_id, null_ptid) |
| 2279 | || ptid_equal (gdb_id, minus_one_ptid)) |
| 2280 | thread_id = null_ptid; |
| 2281 | else if (pid != 0 |
| 2282 | && ptid_equal (pid_to_ptid (pid), |
| 2283 | gdb_id)) |
| 2284 | { |
| 2285 | struct thread_info *thread = |
| 2286 | (struct thread_info *) find_inferior (&all_threads, |
| 2287 | first_thread_of, |
| 2288 | &pid); |
| 2289 | if (!thread) |
| 2290 | { |
| 2291 | write_enn (own_buf); |
| 2292 | break; |
| 2293 | } |
| 2294 | |
| 2295 | thread_id = ((struct inferior_list_entry *)thread)->id; |
| 2296 | } |
| 2297 | else |
| 2298 | { |
| 2299 | thread_id = gdb_id_to_thread_id (gdb_id); |
| 2300 | if (ptid_equal (thread_id, null_ptid)) |
| 2301 | { |
| 2302 | write_enn (own_buf); |
| 2303 | break; |
| 2304 | } |
| 2305 | } |
| 2306 | |
| 2307 | if (own_buf[1] == 'g') |
| 2308 | { |
| 2309 | if (ptid_equal (thread_id, null_ptid)) |
| 2310 | { |
| 2311 | /* GDB is telling us to choose any thread. Check if |
| 2312 | the currently selected thread is still valid. If |
| 2313 | it is not, select the first available. */ |
| 2314 | struct thread_info *thread = |
| 2315 | (struct thread_info *) find_inferior_id (&all_threads, |
| 2316 | general_thread); |
| 2317 | if (thread == NULL) |
| 2318 | thread_id = all_threads.head->id; |
| 2319 | } |
| 2320 | |
| 2321 | general_thread = thread_id; |
| 2322 | set_desired_inferior (1); |
| 2323 | } |
| 2324 | else if (own_buf[1] == 'c') |
| 2325 | cont_thread = thread_id; |
| 2326 | else if (own_buf[1] == 's') |
| 2327 | step_thread = thread_id; |
| 2328 | |
| 2329 | write_ok (own_buf); |
| 2330 | } |
| 2331 | else |
| 2332 | { |
| 2333 | /* Silently ignore it so that gdb can extend the protocol |
| 2334 | without compatibility headaches. */ |
| 2335 | own_buf[0] = '\0'; |
| 2336 | } |
| 2337 | break; |
| 2338 | case 'g': |
| 2339 | require_running (own_buf); |
| 2340 | set_desired_inferior (1); |
| 2341 | registers_to_string (own_buf); |
| 2342 | break; |
| 2343 | case 'G': |
| 2344 | require_running (own_buf); |
| 2345 | set_desired_inferior (1); |
| 2346 | registers_from_string (&own_buf[1]); |
| 2347 | write_ok (own_buf); |
| 2348 | break; |
| 2349 | case 'm': |
| 2350 | require_running (own_buf); |
| 2351 | decode_m_packet (&own_buf[1], &mem_addr, &len); |
| 2352 | if (read_inferior_memory (mem_addr, mem_buf, len) == 0) |
| 2353 | convert_int_to_ascii (mem_buf, own_buf, len); |
| 2354 | else |
| 2355 | write_enn (own_buf); |
| 2356 | break; |
| 2357 | case 'M': |
| 2358 | require_running (own_buf); |
| 2359 | decode_M_packet (&own_buf[1], &mem_addr, &len, mem_buf); |
| 2360 | if (write_inferior_memory (mem_addr, mem_buf, len) == 0) |
| 2361 | write_ok (own_buf); |
| 2362 | else |
| 2363 | write_enn (own_buf); |
| 2364 | break; |
| 2365 | case 'X': |
| 2366 | require_running (own_buf); |
| 2367 | if (decode_X_packet (&own_buf[1], packet_len - 1, |
| 2368 | &mem_addr, &len, mem_buf) < 0 |
| 2369 | || write_inferior_memory (mem_addr, mem_buf, len) != 0) |
| 2370 | write_enn (own_buf); |
| 2371 | else |
| 2372 | write_ok (own_buf); |
| 2373 | break; |
| 2374 | case 'C': |
| 2375 | require_running (own_buf); |
| 2376 | convert_ascii_to_int (own_buf + 1, &sig, 1); |
| 2377 | if (target_signal_to_host_p (sig)) |
| 2378 | signal = target_signal_to_host (sig); |
| 2379 | else |
| 2380 | signal = 0; |
| 2381 | myresume (own_buf, 0, signal); |
| 2382 | break; |
| 2383 | case 'S': |
| 2384 | require_running (own_buf); |
| 2385 | convert_ascii_to_int (own_buf + 1, &sig, 1); |
| 2386 | if (target_signal_to_host_p (sig)) |
| 2387 | signal = target_signal_to_host (sig); |
| 2388 | else |
| 2389 | signal = 0; |
| 2390 | myresume (own_buf, 1, signal); |
| 2391 | break; |
| 2392 | case 'c': |
| 2393 | require_running (own_buf); |
| 2394 | signal = 0; |
| 2395 | myresume (own_buf, 0, signal); |
| 2396 | break; |
| 2397 | case 's': |
| 2398 | require_running (own_buf); |
| 2399 | signal = 0; |
| 2400 | myresume (own_buf, 1, signal); |
| 2401 | break; |
| 2402 | case 'Z': /* insert_ ... */ |
| 2403 | /* Fallthrough. */ |
| 2404 | case 'z': /* remove_ ... */ |
| 2405 | { |
| 2406 | char *lenptr; |
| 2407 | char *dataptr; |
| 2408 | CORE_ADDR addr = strtoul (&own_buf[3], &lenptr, 16); |
| 2409 | int len = strtol (lenptr + 1, &dataptr, 16); |
| 2410 | char type = own_buf[1]; |
| 2411 | int res; |
| 2412 | const int insert = ch == 'Z'; |
| 2413 | |
| 2414 | /* Default to unrecognized/unsupported. */ |
| 2415 | res = 1; |
| 2416 | switch (type) |
| 2417 | { |
| 2418 | case '0': /* software-breakpoint */ |
| 2419 | case '1': /* hardware-breakpoint */ |
| 2420 | case '2': /* write watchpoint */ |
| 2421 | case '3': /* read watchpoint */ |
| 2422 | case '4': /* access watchpoint */ |
| 2423 | require_running (own_buf); |
| 2424 | if (insert && the_target->insert_point != NULL) |
| 2425 | res = (*the_target->insert_point) (type, addr, len); |
| 2426 | else if (!insert && the_target->remove_point != NULL) |
| 2427 | res = (*the_target->remove_point) (type, addr, len); |
| 2428 | break; |
| 2429 | default: |
| 2430 | break; |
| 2431 | } |
| 2432 | |
| 2433 | if (res == 0) |
| 2434 | write_ok (own_buf); |
| 2435 | else if (res == 1) |
| 2436 | /* Unsupported. */ |
| 2437 | own_buf[0] = '\0'; |
| 2438 | else |
| 2439 | write_enn (own_buf); |
| 2440 | break; |
| 2441 | } |
| 2442 | case 'k': |
| 2443 | response_needed = 0; |
| 2444 | if (!target_running ()) |
| 2445 | /* The packet we received doesn't make sense - but we can't |
| 2446 | reply to it, either. */ |
| 2447 | return; |
| 2448 | |
| 2449 | fprintf (stderr, "Killing all inferiors\n"); |
| 2450 | for_each_inferior (&all_processes, kill_inferior_callback); |
| 2451 | |
| 2452 | /* When using the extended protocol, we wait with no program |
| 2453 | running. The traditional protocol will exit instead. */ |
| 2454 | if (extended_protocol) |
| 2455 | { |
| 2456 | last_status.kind = TARGET_WAITKIND_EXITED; |
| 2457 | last_status.value.sig = TARGET_SIGNAL_KILL; |
| 2458 | return; |
| 2459 | } |
| 2460 | else |
| 2461 | { |
| 2462 | exit (0); |
| 2463 | break; |
| 2464 | } |
| 2465 | case 'T': |
| 2466 | { |
| 2467 | ptid_t gdb_id, thread_id; |
| 2468 | |
| 2469 | require_running (own_buf); |
| 2470 | |
| 2471 | gdb_id = read_ptid (&own_buf[1], NULL); |
| 2472 | thread_id = gdb_id_to_thread_id (gdb_id); |
| 2473 | if (ptid_equal (thread_id, null_ptid)) |
| 2474 | { |
| 2475 | write_enn (own_buf); |
| 2476 | break; |
| 2477 | } |
| 2478 | |
| 2479 | if (mythread_alive (thread_id)) |
| 2480 | write_ok (own_buf); |
| 2481 | else |
| 2482 | write_enn (own_buf); |
| 2483 | } |
| 2484 | break; |
| 2485 | case 'R': |
| 2486 | response_needed = 0; |
| 2487 | |
| 2488 | /* Restarting the inferior is only supported in the extended |
| 2489 | protocol. */ |
| 2490 | if (extended_protocol) |
| 2491 | { |
| 2492 | if (target_running ()) |
| 2493 | for_each_inferior (&all_processes, |
| 2494 | kill_inferior_callback); |
| 2495 | fprintf (stderr, "GDBserver restarting\n"); |
| 2496 | |
| 2497 | /* Wait till we are at 1st instruction in prog. */ |
| 2498 | if (program_argv != NULL) |
| 2499 | start_inferior (program_argv); |
| 2500 | else |
| 2501 | { |
| 2502 | last_status.kind = TARGET_WAITKIND_EXITED; |
| 2503 | last_status.value.sig = TARGET_SIGNAL_KILL; |
| 2504 | } |
| 2505 | return; |
| 2506 | } |
| 2507 | else |
| 2508 | { |
| 2509 | /* It is a request we don't understand. Respond with an |
| 2510 | empty packet so that gdb knows that we don't support this |
| 2511 | request. */ |
| 2512 | own_buf[0] = '\0'; |
| 2513 | break; |
| 2514 | } |
| 2515 | case 'v': |
| 2516 | /* Extended (long) request. */ |
| 2517 | handle_v_requests (own_buf, packet_len, &new_packet_len); |
| 2518 | break; |
| 2519 | |
| 2520 | default: |
| 2521 | /* It is a request we don't understand. Respond with an empty |
| 2522 | packet so that gdb knows that we don't support this |
| 2523 | request. */ |
| 2524 | own_buf[0] = '\0'; |
| 2525 | break; |
| 2526 | } |
| 2527 | |
| 2528 | if (new_packet_len != -1) |
| 2529 | putpkt_binary (own_buf, new_packet_len); |
| 2530 | else |
| 2531 | putpkt (own_buf); |
| 2532 | |
| 2533 | response_needed = 0; |
| 2534 | |
| 2535 | if (!extended_protocol && have_ran && !target_running ()) |
| 2536 | { |
| 2537 | /* In non-stop, defer exiting until GDB had a chance to query |
| 2538 | the whole vStopped list (until it gets an OK). */ |
| 2539 | if (!notif_queue) |
| 2540 | { |
| 2541 | fprintf (stderr, "GDBserver exiting\n"); |
| 2542 | remote_close (); |
| 2543 | exit (0); |
| 2544 | } |
| 2545 | } |
| 2546 | } |
| 2547 | |
| 2548 | /* Event-loop callback for serial events. */ |
| 2549 | |
| 2550 | void |
| 2551 | handle_serial_event (int err, gdb_client_data client_data) |
| 2552 | { |
| 2553 | if (debug_threads) |
| 2554 | fprintf (stderr, "handling possible serial event\n"); |
| 2555 | |
| 2556 | /* Really handle it. */ |
| 2557 | process_serial_event (); |
| 2558 | |
| 2559 | /* Be sure to not change the selected inferior behind GDB's back. |
| 2560 | Important in the non-stop mode asynchronous protocol. */ |
| 2561 | set_desired_inferior (1); |
| 2562 | } |
| 2563 | |
| 2564 | /* Event-loop callback for target events. */ |
| 2565 | |
| 2566 | void |
| 2567 | handle_target_event (int err, gdb_client_data client_data) |
| 2568 | { |
| 2569 | if (debug_threads) |
| 2570 | fprintf (stderr, "handling possible target event\n"); |
| 2571 | |
| 2572 | last_ptid = mywait (minus_one_ptid, &last_status, |
| 2573 | TARGET_WNOHANG, 1); |
| 2574 | |
| 2575 | if (last_status.kind != TARGET_WAITKIND_IGNORE) |
| 2576 | { |
| 2577 | /* Something interesting. Tell GDB about it. */ |
| 2578 | push_event (last_ptid, &last_status); |
| 2579 | } |
| 2580 | |
| 2581 | /* Be sure to not change the selected inferior behind GDB's back. |
| 2582 | Important in the non-stop mode asynchronous protocol. */ |
| 2583 | set_desired_inferior (1); |
| 2584 | } |