| 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 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 | unsigned long cont_thread; |
| 36 | unsigned long general_thread; |
| 37 | unsigned long step_thread; |
| 38 | unsigned long thread_from_wait; |
| 39 | unsigned long old_thread_from_wait; |
| 40 | int server_waiting; |
| 41 | |
| 42 | static int extended_protocol; |
| 43 | static int attached; |
| 44 | static int response_needed; |
| 45 | static int exit_requested; |
| 46 | |
| 47 | static char **program_argv, **wrapper_argv; |
| 48 | |
| 49 | /* Enable miscellaneous debugging output. The name is historical - it |
| 50 | was originally used to debug LinuxThreads support. */ |
| 51 | int debug_threads; |
| 52 | |
| 53 | int pass_signals[TARGET_SIGNAL_LAST]; |
| 54 | |
| 55 | jmp_buf toplevel; |
| 56 | |
| 57 | const char *gdbserver_xmltarget; |
| 58 | |
| 59 | /* The PID of the originally created or attached inferior. Used to |
| 60 | send signals to the process when GDB sends us an asynchronous interrupt |
| 61 | (user hitting Control-C in the client), and to wait for the child to exit |
| 62 | when no longer debugging it. */ |
| 63 | |
| 64 | unsigned long signal_pid; |
| 65 | |
| 66 | #ifdef SIGTTOU |
| 67 | /* A file descriptor for the controlling terminal. */ |
| 68 | int terminal_fd; |
| 69 | |
| 70 | /* TERMINAL_FD's original foreground group. */ |
| 71 | pid_t old_foreground_pgrp; |
| 72 | |
| 73 | /* Hand back terminal ownership to the original foreground group. */ |
| 74 | |
| 75 | static void |
| 76 | restore_old_foreground_pgrp (void) |
| 77 | { |
| 78 | tcsetpgrp (terminal_fd, old_foreground_pgrp); |
| 79 | } |
| 80 | #endif |
| 81 | |
| 82 | /* Set if you want to disable optional thread related packets support |
| 83 | in gdbserver, for the sake of testing GDB against stubs that don't |
| 84 | support them. */ |
| 85 | int disable_packet_vCont; |
| 86 | int disable_packet_Tthread; |
| 87 | int disable_packet_qC; |
| 88 | int disable_packet_qfThreadInfo; |
| 89 | |
| 90 | static int |
| 91 | target_running (void) |
| 92 | { |
| 93 | return all_threads.head != NULL; |
| 94 | } |
| 95 | |
| 96 | static int |
| 97 | start_inferior (char **argv, char *statusptr) |
| 98 | { |
| 99 | char **new_argv = argv; |
| 100 | attached = 0; |
| 101 | |
| 102 | if (wrapper_argv != NULL) |
| 103 | { |
| 104 | int i, count = 1; |
| 105 | |
| 106 | for (i = 0; wrapper_argv[i] != NULL; i++) |
| 107 | count++; |
| 108 | for (i = 0; argv[i] != NULL; i++) |
| 109 | count++; |
| 110 | new_argv = alloca (sizeof (char *) * count); |
| 111 | count = 0; |
| 112 | for (i = 0; wrapper_argv[i] != NULL; i++) |
| 113 | new_argv[count++] = wrapper_argv[i]; |
| 114 | for (i = 0; argv[i] != NULL; i++) |
| 115 | new_argv[count++] = argv[i]; |
| 116 | new_argv[count] = NULL; |
| 117 | } |
| 118 | |
| 119 | #ifdef SIGTTOU |
| 120 | signal (SIGTTOU, SIG_DFL); |
| 121 | signal (SIGTTIN, SIG_DFL); |
| 122 | #endif |
| 123 | |
| 124 | signal_pid = create_inferior (new_argv[0], new_argv); |
| 125 | |
| 126 | /* FIXME: we don't actually know at this point that the create |
| 127 | actually succeeded. We won't know that until we wait. */ |
| 128 | fprintf (stderr, "Process %s created; pid = %ld\n", argv[0], |
| 129 | signal_pid); |
| 130 | fflush (stderr); |
| 131 | |
| 132 | #ifdef SIGTTOU |
| 133 | signal (SIGTTOU, SIG_IGN); |
| 134 | signal (SIGTTIN, SIG_IGN); |
| 135 | terminal_fd = fileno (stderr); |
| 136 | old_foreground_pgrp = tcgetpgrp (terminal_fd); |
| 137 | tcsetpgrp (terminal_fd, signal_pid); |
| 138 | atexit (restore_old_foreground_pgrp); |
| 139 | #endif |
| 140 | |
| 141 | if (wrapper_argv != NULL) |
| 142 | { |
| 143 | struct thread_resume resume_info; |
| 144 | int sig; |
| 145 | |
| 146 | resume_info.thread = -1; |
| 147 | resume_info.step = 0; |
| 148 | resume_info.sig = 0; |
| 149 | resume_info.leave_stopped = 0; |
| 150 | |
| 151 | sig = mywait (statusptr, 0); |
| 152 | if (*statusptr != 'T') |
| 153 | return sig; |
| 154 | |
| 155 | do |
| 156 | { |
| 157 | (*the_target->resume) (&resume_info); |
| 158 | |
| 159 | sig = mywait (statusptr, 0); |
| 160 | if (*statusptr != 'T') |
| 161 | return sig; |
| 162 | } |
| 163 | while (sig != TARGET_SIGNAL_TRAP); |
| 164 | |
| 165 | return sig; |
| 166 | } |
| 167 | |
| 168 | /* Wait till we are at 1st instruction in program, return signal |
| 169 | number (assuming success). */ |
| 170 | return mywait (statusptr, 0); |
| 171 | } |
| 172 | |
| 173 | static int |
| 174 | attach_inferior (int pid, char *statusptr, int *sigptr) |
| 175 | { |
| 176 | /* myattach should return -1 if attaching is unsupported, |
| 177 | 0 if it succeeded, and call error() otherwise. */ |
| 178 | |
| 179 | if (myattach (pid) != 0) |
| 180 | return -1; |
| 181 | |
| 182 | attached = 1; |
| 183 | |
| 184 | fprintf (stderr, "Attached; pid = %d\n", pid); |
| 185 | fflush (stderr); |
| 186 | |
| 187 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
| 188 | attach function, so that it can be the main thread instead of |
| 189 | whichever we were told to attach to. */ |
| 190 | signal_pid = pid; |
| 191 | |
| 192 | *sigptr = mywait (statusptr, 0); |
| 193 | |
| 194 | /* GDB knows to ignore the first SIGSTOP after attaching to a running |
| 195 | process using the "attach" command, but this is different; it's |
| 196 | just using "target remote". Pretend it's just starting up. */ |
| 197 | if (*statusptr == 'T' && *sigptr == TARGET_SIGNAL_STOP) |
| 198 | *sigptr = TARGET_SIGNAL_TRAP; |
| 199 | |
| 200 | return 0; |
| 201 | } |
| 202 | |
| 203 | extern int remote_debug; |
| 204 | |
| 205 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
| 206 | or -1 otherwise. */ |
| 207 | |
| 208 | static int |
| 209 | decode_xfer_read (char *buf, char **annex, CORE_ADDR *ofs, unsigned int *len) |
| 210 | { |
| 211 | /* Extract and NUL-terminate the annex. */ |
| 212 | *annex = buf; |
| 213 | while (*buf && *buf != ':') |
| 214 | buf++; |
| 215 | if (*buf == '\0') |
| 216 | return -1; |
| 217 | *buf++ = 0; |
| 218 | |
| 219 | /* After the read marker and annex, qXfer looks like a |
| 220 | traditional 'm' packet. */ |
| 221 | decode_m_packet (buf, ofs, len); |
| 222 | |
| 223 | return 0; |
| 224 | } |
| 225 | |
| 226 | /* Write the response to a successful qXfer read. Returns the |
| 227 | length of the (binary) data stored in BUF, corresponding |
| 228 | to as much of DATA/LEN as we could fit. IS_MORE controls |
| 229 | the first character of the response. */ |
| 230 | static int |
| 231 | write_qxfer_response (char *buf, const void *data, int len, int is_more) |
| 232 | { |
| 233 | int out_len; |
| 234 | |
| 235 | if (is_more) |
| 236 | buf[0] = 'm'; |
| 237 | else |
| 238 | buf[0] = 'l'; |
| 239 | |
| 240 | return remote_escape_output (data, len, (unsigned char *) buf + 1, &out_len, |
| 241 | PBUFSIZ - 2) + 1; |
| 242 | } |
| 243 | |
| 244 | /* Handle all of the extended 'Q' packets. */ |
| 245 | void |
| 246 | handle_general_set (char *own_buf) |
| 247 | { |
| 248 | if (strncmp ("QPassSignals:", own_buf, strlen ("QPassSignals:")) == 0) |
| 249 | { |
| 250 | int numsigs = (int) TARGET_SIGNAL_LAST, i; |
| 251 | const char *p = own_buf + strlen ("QPassSignals:"); |
| 252 | CORE_ADDR cursig; |
| 253 | |
| 254 | p = decode_address_to_semicolon (&cursig, p); |
| 255 | for (i = 0; i < numsigs; i++) |
| 256 | { |
| 257 | if (i == cursig) |
| 258 | { |
| 259 | pass_signals[i] = 1; |
| 260 | if (*p == '\0') |
| 261 | /* Keep looping, to clear the remaining signals. */ |
| 262 | cursig = -1; |
| 263 | else |
| 264 | p = decode_address_to_semicolon (&cursig, p); |
| 265 | } |
| 266 | else |
| 267 | pass_signals[i] = 0; |
| 268 | } |
| 269 | strcpy (own_buf, "OK"); |
| 270 | return; |
| 271 | } |
| 272 | |
| 273 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
| 274 | { |
| 275 | if (remote_debug) |
| 276 | { |
| 277 | fprintf (stderr, "[noack mode enabled]\n"); |
| 278 | fflush (stderr); |
| 279 | } |
| 280 | |
| 281 | noack_mode = 1; |
| 282 | write_ok (own_buf); |
| 283 | return; |
| 284 | } |
| 285 | |
| 286 | /* Otherwise we didn't know what packet it was. Say we didn't |
| 287 | understand it. */ |
| 288 | own_buf[0] = 0; |
| 289 | } |
| 290 | |
| 291 | static const char * |
| 292 | get_features_xml (const char *annex) |
| 293 | { |
| 294 | /* gdbserver_xmltarget defines what to return when looking |
| 295 | for the "target.xml" file. Its contents can either be |
| 296 | verbatim XML code (prefixed with a '@') or else the name |
| 297 | of the actual XML file to be used in place of "target.xml". |
| 298 | |
| 299 | This variable is set up from the auto-generated |
| 300 | init_registers_... routine for the current target. */ |
| 301 | |
| 302 | if (gdbserver_xmltarget |
| 303 | && strcmp (annex, "target.xml") == 0) |
| 304 | { |
| 305 | if (*gdbserver_xmltarget == '@') |
| 306 | return gdbserver_xmltarget + 1; |
| 307 | else |
| 308 | annex = gdbserver_xmltarget; |
| 309 | } |
| 310 | |
| 311 | #ifdef USE_XML |
| 312 | { |
| 313 | extern const char *const xml_builtin[][2]; |
| 314 | int i; |
| 315 | |
| 316 | /* Look for the annex. */ |
| 317 | for (i = 0; xml_builtin[i][0] != NULL; i++) |
| 318 | if (strcmp (annex, xml_builtin[i][0]) == 0) |
| 319 | break; |
| 320 | |
| 321 | if (xml_builtin[i][0] != NULL) |
| 322 | return xml_builtin[i][1]; |
| 323 | } |
| 324 | #endif |
| 325 | |
| 326 | return NULL; |
| 327 | } |
| 328 | |
| 329 | void |
| 330 | monitor_show_help (void) |
| 331 | { |
| 332 | monitor_output ("The following monitor commands are supported:\n"); |
| 333 | monitor_output (" set debug <0|1>\n"); |
| 334 | monitor_output (" Enable general debugging messages\n"); |
| 335 | monitor_output (" set remote-debug <0|1>\n"); |
| 336 | monitor_output (" Enable remote protocol debugging messages\n"); |
| 337 | monitor_output (" exit\n"); |
| 338 | monitor_output (" Quit GDBserver\n"); |
| 339 | } |
| 340 | |
| 341 | /* Subroutine of handle_search_memory to simplify it. */ |
| 342 | |
| 343 | static int |
| 344 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, |
| 345 | gdb_byte *pattern, unsigned pattern_len, |
| 346 | gdb_byte *search_buf, |
| 347 | unsigned chunk_size, unsigned search_buf_size, |
| 348 | CORE_ADDR *found_addrp) |
| 349 | { |
| 350 | /* Prime the search buffer. */ |
| 351 | |
| 352 | if (read_inferior_memory (start_addr, search_buf, search_buf_size) != 0) |
| 353 | { |
| 354 | warning ("Unable to access target memory at 0x%lx, halting search.", |
| 355 | (long) start_addr); |
| 356 | return -1; |
| 357 | } |
| 358 | |
| 359 | /* Perform the search. |
| 360 | |
| 361 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. |
| 362 | When we've scanned N bytes we copy the trailing bytes to the start and |
| 363 | read in another N bytes. */ |
| 364 | |
| 365 | while (search_space_len >= pattern_len) |
| 366 | { |
| 367 | gdb_byte *found_ptr; |
| 368 | unsigned nr_search_bytes = (search_space_len < search_buf_size |
| 369 | ? search_space_len |
| 370 | : search_buf_size); |
| 371 | |
| 372 | found_ptr = memmem (search_buf, nr_search_bytes, pattern, pattern_len); |
| 373 | |
| 374 | if (found_ptr != NULL) |
| 375 | { |
| 376 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); |
| 377 | *found_addrp = found_addr; |
| 378 | return 1; |
| 379 | } |
| 380 | |
| 381 | /* Not found in this chunk, skip to next chunk. */ |
| 382 | |
| 383 | /* Don't let search_space_len wrap here, it's unsigned. */ |
| 384 | if (search_space_len >= chunk_size) |
| 385 | search_space_len -= chunk_size; |
| 386 | else |
| 387 | search_space_len = 0; |
| 388 | |
| 389 | if (search_space_len >= pattern_len) |
| 390 | { |
| 391 | unsigned keep_len = search_buf_size - chunk_size; |
| 392 | CORE_ADDR read_addr = start_addr + keep_len; |
| 393 | int nr_to_read; |
| 394 | |
| 395 | /* Copy the trailing part of the previous iteration to the front |
| 396 | of the buffer for the next iteration. */ |
| 397 | memcpy (search_buf, search_buf + chunk_size, keep_len); |
| 398 | |
| 399 | nr_to_read = (search_space_len - keep_len < chunk_size |
| 400 | ? search_space_len - keep_len |
| 401 | : chunk_size); |
| 402 | |
| 403 | if (read_inferior_memory (read_addr, search_buf + keep_len, |
| 404 | nr_to_read) != 0) |
| 405 | { |
| 406 | warning ("Unable to access target memory at 0x%lx, halting search.", |
| 407 | (long) read_addr); |
| 408 | return -1; |
| 409 | } |
| 410 | |
| 411 | start_addr += chunk_size; |
| 412 | } |
| 413 | } |
| 414 | |
| 415 | /* Not found. */ |
| 416 | |
| 417 | return 0; |
| 418 | } |
| 419 | |
| 420 | /* Handle qSearch:memory packets. */ |
| 421 | |
| 422 | static void |
| 423 | handle_search_memory (char *own_buf, int packet_len) |
| 424 | { |
| 425 | CORE_ADDR start_addr; |
| 426 | CORE_ADDR search_space_len; |
| 427 | gdb_byte *pattern; |
| 428 | unsigned int pattern_len; |
| 429 | /* NOTE: also defined in find.c testcase. */ |
| 430 | #define SEARCH_CHUNK_SIZE 16000 |
| 431 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; |
| 432 | /* Buffer to hold memory contents for searching. */ |
| 433 | gdb_byte *search_buf; |
| 434 | unsigned search_buf_size; |
| 435 | int found; |
| 436 | CORE_ADDR found_addr; |
| 437 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; |
| 438 | |
| 439 | pattern = malloc (packet_len); |
| 440 | if (pattern == NULL) |
| 441 | { |
| 442 | error ("Unable to allocate memory to perform the search"); |
| 443 | strcpy (own_buf, "E00"); |
| 444 | return; |
| 445 | } |
| 446 | if (decode_search_memory_packet (own_buf + cmd_name_len, |
| 447 | packet_len - cmd_name_len, |
| 448 | &start_addr, &search_space_len, |
| 449 | pattern, &pattern_len) < 0) |
| 450 | { |
| 451 | free (pattern); |
| 452 | error ("Error in parsing qSearch:memory packet"); |
| 453 | strcpy (own_buf, "E00"); |
| 454 | return; |
| 455 | } |
| 456 | |
| 457 | search_buf_size = chunk_size + pattern_len - 1; |
| 458 | |
| 459 | /* No point in trying to allocate a buffer larger than the search space. */ |
| 460 | if (search_space_len < search_buf_size) |
| 461 | search_buf_size = search_space_len; |
| 462 | |
| 463 | search_buf = malloc (search_buf_size); |
| 464 | if (search_buf == NULL) |
| 465 | { |
| 466 | free (pattern); |
| 467 | error ("Unable to allocate memory to perform the search"); |
| 468 | strcpy (own_buf, "E00"); |
| 469 | return; |
| 470 | } |
| 471 | |
| 472 | found = handle_search_memory_1 (start_addr, search_space_len, |
| 473 | pattern, pattern_len, |
| 474 | search_buf, chunk_size, search_buf_size, |
| 475 | &found_addr); |
| 476 | |
| 477 | if (found > 0) |
| 478 | sprintf (own_buf, "1,%lx", (long) found_addr); |
| 479 | else if (found == 0) |
| 480 | strcpy (own_buf, "0"); |
| 481 | else |
| 482 | strcpy (own_buf, "E00"); |
| 483 | |
| 484 | free (search_buf); |
| 485 | free (pattern); |
| 486 | } |
| 487 | |
| 488 | #define require_running(BUF) \ |
| 489 | if (!target_running ()) \ |
| 490 | { \ |
| 491 | write_enn (BUF); \ |
| 492 | return; \ |
| 493 | } |
| 494 | |
| 495 | /* Handle all of the extended 'q' packets. */ |
| 496 | void |
| 497 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
| 498 | { |
| 499 | static struct inferior_list_entry *thread_ptr; |
| 500 | |
| 501 | /* Reply the current thread id. */ |
| 502 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
| 503 | { |
| 504 | require_running (own_buf); |
| 505 | thread_ptr = all_threads.head; |
| 506 | sprintf (own_buf, "QC%x", |
| 507 | thread_to_gdb_id ((struct thread_info *)thread_ptr)); |
| 508 | return; |
| 509 | } |
| 510 | |
| 511 | if (strcmp ("qSymbol::", own_buf) == 0) |
| 512 | { |
| 513 | if (target_running () && the_target->look_up_symbols != NULL) |
| 514 | (*the_target->look_up_symbols) (); |
| 515 | |
| 516 | strcpy (own_buf, "OK"); |
| 517 | return; |
| 518 | } |
| 519 | |
| 520 | if (!disable_packet_qfThreadInfo) |
| 521 | { |
| 522 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
| 523 | { |
| 524 | require_running (own_buf); |
| 525 | thread_ptr = all_threads.head; |
| 526 | sprintf (own_buf, "m%x", thread_to_gdb_id ((struct thread_info *)thread_ptr)); |
| 527 | thread_ptr = thread_ptr->next; |
| 528 | return; |
| 529 | } |
| 530 | |
| 531 | if (strcmp ("qsThreadInfo", own_buf) == 0) |
| 532 | { |
| 533 | require_running (own_buf); |
| 534 | if (thread_ptr != NULL) |
| 535 | { |
| 536 | sprintf (own_buf, "m%x", thread_to_gdb_id ((struct thread_info *)thread_ptr)); |
| 537 | thread_ptr = thread_ptr->next; |
| 538 | return; |
| 539 | } |
| 540 | else |
| 541 | { |
| 542 | sprintf (own_buf, "l"); |
| 543 | return; |
| 544 | } |
| 545 | } |
| 546 | } |
| 547 | |
| 548 | if (the_target->read_offsets != NULL |
| 549 | && strcmp ("qOffsets", own_buf) == 0) |
| 550 | { |
| 551 | CORE_ADDR text, data; |
| 552 | |
| 553 | require_running (own_buf); |
| 554 | if (the_target->read_offsets (&text, &data)) |
| 555 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", |
| 556 | (long)text, (long)data, (long)data); |
| 557 | else |
| 558 | write_enn (own_buf); |
| 559 | |
| 560 | return; |
| 561 | } |
| 562 | |
| 563 | if (the_target->qxfer_spu != NULL |
| 564 | && strncmp ("qXfer:spu:read:", own_buf, 15) == 0) |
| 565 | { |
| 566 | char *annex; |
| 567 | int n; |
| 568 | unsigned int len; |
| 569 | CORE_ADDR ofs; |
| 570 | unsigned char *spu_buf; |
| 571 | |
| 572 | require_running (own_buf); |
| 573 | strcpy (own_buf, "E00"); |
| 574 | if (decode_xfer_read (own_buf + 15, &annex, &ofs, &len) < 0) |
| 575 | return; |
| 576 | if (len > PBUFSIZ - 2) |
| 577 | len = PBUFSIZ - 2; |
| 578 | spu_buf = malloc (len + 1); |
| 579 | if (!spu_buf) |
| 580 | return; |
| 581 | |
| 582 | n = (*the_target->qxfer_spu) (annex, spu_buf, NULL, ofs, len + 1); |
| 583 | if (n < 0) |
| 584 | write_enn (own_buf); |
| 585 | else if (n > len) |
| 586 | *new_packet_len_p = write_qxfer_response |
| 587 | (own_buf, spu_buf, len, 1); |
| 588 | else |
| 589 | *new_packet_len_p = write_qxfer_response |
| 590 | (own_buf, spu_buf, n, 0); |
| 591 | |
| 592 | free (spu_buf); |
| 593 | return; |
| 594 | } |
| 595 | |
| 596 | if (the_target->qxfer_spu != NULL |
| 597 | && strncmp ("qXfer:spu:write:", own_buf, 16) == 0) |
| 598 | { |
| 599 | char *annex; |
| 600 | int n; |
| 601 | unsigned int len; |
| 602 | CORE_ADDR ofs; |
| 603 | unsigned char *spu_buf; |
| 604 | |
| 605 | require_running (own_buf); |
| 606 | strcpy (own_buf, "E00"); |
| 607 | spu_buf = malloc (packet_len - 15); |
| 608 | if (!spu_buf) |
| 609 | return; |
| 610 | if (decode_xfer_write (own_buf + 16, packet_len - 16, &annex, |
| 611 | &ofs, &len, spu_buf) < 0) |
| 612 | { |
| 613 | free (spu_buf); |
| 614 | return; |
| 615 | } |
| 616 | |
| 617 | n = (*the_target->qxfer_spu) |
| 618 | (annex, NULL, (unsigned const char *)spu_buf, ofs, len); |
| 619 | if (n < 0) |
| 620 | write_enn (own_buf); |
| 621 | else |
| 622 | sprintf (own_buf, "%x", n); |
| 623 | |
| 624 | free (spu_buf); |
| 625 | return; |
| 626 | } |
| 627 | |
| 628 | if (the_target->read_auxv != NULL |
| 629 | && strncmp ("qXfer:auxv:read:", own_buf, 16) == 0) |
| 630 | { |
| 631 | unsigned char *data; |
| 632 | int n; |
| 633 | CORE_ADDR ofs; |
| 634 | unsigned int len; |
| 635 | char *annex; |
| 636 | |
| 637 | require_running (own_buf); |
| 638 | |
| 639 | /* Reject any annex; grab the offset and length. */ |
| 640 | if (decode_xfer_read (own_buf + 16, &annex, &ofs, &len) < 0 |
| 641 | || annex[0] != '\0') |
| 642 | { |
| 643 | strcpy (own_buf, "E00"); |
| 644 | return; |
| 645 | } |
| 646 | |
| 647 | /* Read one extra byte, as an indicator of whether there is |
| 648 | more. */ |
| 649 | if (len > PBUFSIZ - 2) |
| 650 | len = PBUFSIZ - 2; |
| 651 | data = malloc (len + 1); |
| 652 | if (data == NULL) |
| 653 | { |
| 654 | write_enn (own_buf); |
| 655 | return; |
| 656 | } |
| 657 | n = (*the_target->read_auxv) (ofs, data, len + 1); |
| 658 | if (n < 0) |
| 659 | write_enn (own_buf); |
| 660 | else if (n > len) |
| 661 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); |
| 662 | else |
| 663 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); |
| 664 | |
| 665 | free (data); |
| 666 | |
| 667 | return; |
| 668 | } |
| 669 | |
| 670 | if (strncmp ("qXfer:features:read:", own_buf, 20) == 0) |
| 671 | { |
| 672 | CORE_ADDR ofs; |
| 673 | unsigned int len, total_len; |
| 674 | const char *document; |
| 675 | char *annex; |
| 676 | |
| 677 | require_running (own_buf); |
| 678 | |
| 679 | /* Grab the annex, offset, and length. */ |
| 680 | if (decode_xfer_read (own_buf + 20, &annex, &ofs, &len) < 0) |
| 681 | { |
| 682 | strcpy (own_buf, "E00"); |
| 683 | return; |
| 684 | } |
| 685 | |
| 686 | /* Now grab the correct annex. */ |
| 687 | document = get_features_xml (annex); |
| 688 | if (document == NULL) |
| 689 | { |
| 690 | strcpy (own_buf, "E00"); |
| 691 | return; |
| 692 | } |
| 693 | |
| 694 | total_len = strlen (document); |
| 695 | if (len > PBUFSIZ - 2) |
| 696 | len = PBUFSIZ - 2; |
| 697 | |
| 698 | if (ofs > total_len) |
| 699 | write_enn (own_buf); |
| 700 | else if (len < total_len - ofs) |
| 701 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, |
| 702 | len, 1); |
| 703 | else |
| 704 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, |
| 705 | total_len - ofs, 0); |
| 706 | |
| 707 | return; |
| 708 | } |
| 709 | |
| 710 | if (strncmp ("qXfer:libraries:read:", own_buf, 21) == 0) |
| 711 | { |
| 712 | CORE_ADDR ofs; |
| 713 | unsigned int len, total_len; |
| 714 | char *document, *p; |
| 715 | struct inferior_list_entry *dll_ptr; |
| 716 | char *annex; |
| 717 | |
| 718 | require_running (own_buf); |
| 719 | |
| 720 | /* Reject any annex; grab the offset and length. */ |
| 721 | if (decode_xfer_read (own_buf + 21, &annex, &ofs, &len) < 0 |
| 722 | || annex[0] != '\0') |
| 723 | { |
| 724 | strcpy (own_buf, "E00"); |
| 725 | return; |
| 726 | } |
| 727 | |
| 728 | /* Over-estimate the necessary memory. Assume that every character |
| 729 | in the library name must be escaped. */ |
| 730 | total_len = 64; |
| 731 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) |
| 732 | total_len += 128 + 6 * strlen (((struct dll_info *) dll_ptr)->name); |
| 733 | |
| 734 | document = malloc (total_len); |
| 735 | if (document == NULL) |
| 736 | { |
| 737 | write_enn (own_buf); |
| 738 | return; |
| 739 | } |
| 740 | strcpy (document, "<library-list>\n"); |
| 741 | p = document + strlen (document); |
| 742 | |
| 743 | for (dll_ptr = all_dlls.head; dll_ptr != NULL; dll_ptr = dll_ptr->next) |
| 744 | { |
| 745 | struct dll_info *dll = (struct dll_info *) dll_ptr; |
| 746 | char *name; |
| 747 | |
| 748 | strcpy (p, " <library name=\""); |
| 749 | p = p + strlen (p); |
| 750 | name = xml_escape_text (dll->name); |
| 751 | strcpy (p, name); |
| 752 | free (name); |
| 753 | p = p + strlen (p); |
| 754 | strcpy (p, "\"><segment address=\""); |
| 755 | p = p + strlen (p); |
| 756 | sprintf (p, "0x%lx", (long) dll->base_addr); |
| 757 | p = p + strlen (p); |
| 758 | strcpy (p, "\"/></library>\n"); |
| 759 | p = p + strlen (p); |
| 760 | } |
| 761 | |
| 762 | strcpy (p, "</library-list>\n"); |
| 763 | |
| 764 | total_len = strlen (document); |
| 765 | if (len > PBUFSIZ - 2) |
| 766 | len = PBUFSIZ - 2; |
| 767 | |
| 768 | if (ofs > total_len) |
| 769 | write_enn (own_buf); |
| 770 | else if (len < total_len - ofs) |
| 771 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, |
| 772 | len, 1); |
| 773 | else |
| 774 | *new_packet_len_p = write_qxfer_response (own_buf, document + ofs, |
| 775 | total_len - ofs, 0); |
| 776 | |
| 777 | free (document); |
| 778 | return; |
| 779 | } |
| 780 | |
| 781 | if (the_target->qxfer_osdata != NULL |
| 782 | && strncmp ("qXfer:osdata:read:", own_buf, 18) == 0) |
| 783 | { |
| 784 | char *annex; |
| 785 | int n; |
| 786 | unsigned int len; |
| 787 | CORE_ADDR ofs; |
| 788 | unsigned char *workbuf; |
| 789 | |
| 790 | strcpy (own_buf, "E00"); |
| 791 | if (decode_xfer_read (own_buf + 18, &annex, &ofs, &len) < 0) |
| 792 | return; |
| 793 | if (len > PBUFSIZ - 2) |
| 794 | len = PBUFSIZ - 2; |
| 795 | workbuf = malloc (len + 1); |
| 796 | if (!workbuf) |
| 797 | return; |
| 798 | |
| 799 | n = (*the_target->qxfer_osdata) (annex, workbuf, NULL, ofs, len + 1); |
| 800 | if (n < 0) |
| 801 | write_enn (own_buf); |
| 802 | else if (n > len) |
| 803 | *new_packet_len_p = write_qxfer_response |
| 804 | (own_buf, workbuf, len, 1); |
| 805 | else |
| 806 | *new_packet_len_p = write_qxfer_response |
| 807 | (own_buf, workbuf, n, 0); |
| 808 | |
| 809 | free (workbuf); |
| 810 | return; |
| 811 | } |
| 812 | |
| 813 | if (the_target->qxfer_siginfo != NULL |
| 814 | && strncmp ("qXfer:siginfo:read:", own_buf, 19) == 0) |
| 815 | { |
| 816 | unsigned char *data; |
| 817 | int n; |
| 818 | CORE_ADDR ofs; |
| 819 | unsigned int len; |
| 820 | char *annex; |
| 821 | |
| 822 | require_running (own_buf); |
| 823 | |
| 824 | /* Reject any annex; grab the offset and length. */ |
| 825 | if (decode_xfer_read (own_buf + 19, &annex, &ofs, &len) < 0 |
| 826 | || annex[0] != '\0') |
| 827 | { |
| 828 | strcpy (own_buf, "E00"); |
| 829 | return; |
| 830 | } |
| 831 | |
| 832 | /* Read one extra byte, as an indicator of whether there is |
| 833 | more. */ |
| 834 | if (len > PBUFSIZ - 2) |
| 835 | len = PBUFSIZ - 2; |
| 836 | data = malloc (len + 1); |
| 837 | if (!data) |
| 838 | return; |
| 839 | n = (*the_target->qxfer_siginfo) (annex, data, NULL, ofs, len + 1); |
| 840 | if (n < 0) |
| 841 | write_enn (own_buf); |
| 842 | else if (n > len) |
| 843 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); |
| 844 | else |
| 845 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); |
| 846 | |
| 847 | free (data); |
| 848 | return; |
| 849 | } |
| 850 | |
| 851 | if (the_target->qxfer_siginfo != NULL |
| 852 | && strncmp ("qXfer:siginfo:write:", own_buf, 20) == 0) |
| 853 | { |
| 854 | char *annex; |
| 855 | int n; |
| 856 | unsigned int len; |
| 857 | CORE_ADDR ofs; |
| 858 | unsigned char *data; |
| 859 | |
| 860 | require_running (own_buf); |
| 861 | |
| 862 | strcpy (own_buf, "E00"); |
| 863 | data = malloc (packet_len - 19); |
| 864 | if (!data) |
| 865 | return; |
| 866 | if (decode_xfer_write (own_buf + 20, packet_len - 20, &annex, |
| 867 | &ofs, &len, data) < 0) |
| 868 | { |
| 869 | free (data); |
| 870 | return; |
| 871 | } |
| 872 | |
| 873 | n = (*the_target->qxfer_siginfo) |
| 874 | (annex, NULL, (unsigned const char *)data, ofs, len); |
| 875 | if (n < 0) |
| 876 | write_enn (own_buf); |
| 877 | else |
| 878 | sprintf (own_buf, "%x", n); |
| 879 | |
| 880 | free (data); |
| 881 | return; |
| 882 | } |
| 883 | |
| 884 | /* Protocol features query. */ |
| 885 | if (strncmp ("qSupported", own_buf, 10) == 0 |
| 886 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
| 887 | { |
| 888 | sprintf (own_buf, "PacketSize=%x;QPassSignals+", PBUFSIZ - 1); |
| 889 | |
| 890 | /* We do not have any hook to indicate whether the target backend |
| 891 | supports qXfer:libraries:read, so always report it. */ |
| 892 | strcat (own_buf, ";qXfer:libraries:read+"); |
| 893 | |
| 894 | if (the_target->read_auxv != NULL) |
| 895 | strcat (own_buf, ";qXfer:auxv:read+"); |
| 896 | |
| 897 | if (the_target->qxfer_spu != NULL) |
| 898 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); |
| 899 | |
| 900 | if (the_target->qxfer_siginfo != NULL) |
| 901 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); |
| 902 | |
| 903 | /* We always report qXfer:features:read, as targets may |
| 904 | install XML files on a subsequent call to arch_setup. |
| 905 | If we reported to GDB on startup that we don't support |
| 906 | qXfer:feature:read at all, we will never be re-queried. */ |
| 907 | strcat (own_buf, ";qXfer:features:read+"); |
| 908 | |
| 909 | if (transport_is_reliable) |
| 910 | strcat (own_buf, ";QStartNoAckMode+"); |
| 911 | |
| 912 | if (the_target->qxfer_osdata != NULL) |
| 913 | strcat (own_buf, ";qXfer:osdata:read+"); |
| 914 | |
| 915 | return; |
| 916 | } |
| 917 | |
| 918 | /* Thread-local storage support. */ |
| 919 | if (the_target->get_tls_address != NULL |
| 920 | && strncmp ("qGetTLSAddr:", own_buf, 12) == 0) |
| 921 | { |
| 922 | char *p = own_buf + 12; |
| 923 | CORE_ADDR parts[3], address = 0; |
| 924 | int i, err; |
| 925 | |
| 926 | require_running (own_buf); |
| 927 | |
| 928 | for (i = 0; i < 3; i++) |
| 929 | { |
| 930 | char *p2; |
| 931 | int len; |
| 932 | |
| 933 | if (p == NULL) |
| 934 | break; |
| 935 | |
| 936 | p2 = strchr (p, ','); |
| 937 | if (p2) |
| 938 | { |
| 939 | len = p2 - p; |
| 940 | p2++; |
| 941 | } |
| 942 | else |
| 943 | { |
| 944 | len = strlen (p); |
| 945 | p2 = NULL; |
| 946 | } |
| 947 | |
| 948 | decode_address (&parts[i], p, len); |
| 949 | p = p2; |
| 950 | } |
| 951 | |
| 952 | if (p != NULL || i < 3) |
| 953 | err = 1; |
| 954 | else |
| 955 | { |
| 956 | struct thread_info *thread = gdb_id_to_thread (parts[0]); |
| 957 | |
| 958 | if (thread == NULL) |
| 959 | err = 2; |
| 960 | else |
| 961 | err = the_target->get_tls_address (thread, parts[1], parts[2], |
| 962 | &address); |
| 963 | } |
| 964 | |
| 965 | if (err == 0) |
| 966 | { |
| 967 | sprintf (own_buf, "%llx", address); |
| 968 | return; |
| 969 | } |
| 970 | else if (err > 0) |
| 971 | { |
| 972 | write_enn (own_buf); |
| 973 | return; |
| 974 | } |
| 975 | |
| 976 | /* Otherwise, pretend we do not understand this packet. */ |
| 977 | } |
| 978 | |
| 979 | /* Handle "monitor" commands. */ |
| 980 | if (strncmp ("qRcmd,", own_buf, 6) == 0) |
| 981 | { |
| 982 | char *mon = malloc (PBUFSIZ); |
| 983 | int len = strlen (own_buf + 6); |
| 984 | |
| 985 | if (mon == NULL) |
| 986 | { |
| 987 | write_enn (own_buf); |
| 988 | return; |
| 989 | } |
| 990 | |
| 991 | if ((len % 2) != 0 || unhexify (mon, own_buf + 6, len / 2) != len / 2) |
| 992 | { |
| 993 | write_enn (own_buf); |
| 994 | free (mon); |
| 995 | return; |
| 996 | } |
| 997 | mon[len / 2] = '\0'; |
| 998 | |
| 999 | write_ok (own_buf); |
| 1000 | |
| 1001 | if (strcmp (mon, "set debug 1") == 0) |
| 1002 | { |
| 1003 | debug_threads = 1; |
| 1004 | monitor_output ("Debug output enabled.\n"); |
| 1005 | } |
| 1006 | else if (strcmp (mon, "set debug 0") == 0) |
| 1007 | { |
| 1008 | debug_threads = 0; |
| 1009 | monitor_output ("Debug output disabled.\n"); |
| 1010 | } |
| 1011 | else if (strcmp (mon, "set remote-debug 1") == 0) |
| 1012 | { |
| 1013 | remote_debug = 1; |
| 1014 | monitor_output ("Protocol debug output enabled.\n"); |
| 1015 | } |
| 1016 | else if (strcmp (mon, "set remote-debug 0") == 0) |
| 1017 | { |
| 1018 | remote_debug = 0; |
| 1019 | monitor_output ("Protocol debug output disabled.\n"); |
| 1020 | } |
| 1021 | else if (strcmp (mon, "help") == 0) |
| 1022 | monitor_show_help (); |
| 1023 | else if (strcmp (mon, "exit") == 0) |
| 1024 | exit_requested = 1; |
| 1025 | else |
| 1026 | { |
| 1027 | monitor_output ("Unknown monitor command.\n\n"); |
| 1028 | monitor_show_help (); |
| 1029 | write_enn (own_buf); |
| 1030 | } |
| 1031 | |
| 1032 | free (mon); |
| 1033 | return; |
| 1034 | } |
| 1035 | |
| 1036 | if (strncmp ("qSearch:memory:", own_buf, sizeof ("qSearch:memory:") - 1) == 0) |
| 1037 | { |
| 1038 | require_running (own_buf); |
| 1039 | handle_search_memory (own_buf, packet_len); |
| 1040 | return; |
| 1041 | } |
| 1042 | |
| 1043 | if (strcmp (own_buf, "qAttached") == 0) |
| 1044 | { |
| 1045 | require_running (own_buf); |
| 1046 | strcpy (own_buf, attached ? "1" : "0"); |
| 1047 | return; |
| 1048 | } |
| 1049 | |
| 1050 | /* Otherwise we didn't know what packet it was. Say we didn't |
| 1051 | understand it. */ |
| 1052 | own_buf[0] = 0; |
| 1053 | } |
| 1054 | |
| 1055 | /* Parse vCont packets. */ |
| 1056 | void |
| 1057 | handle_v_cont (char *own_buf, char *status, int *signal) |
| 1058 | { |
| 1059 | char *p, *q; |
| 1060 | int n = 0, i = 0; |
| 1061 | struct thread_resume *resume_info, default_action; |
| 1062 | |
| 1063 | /* Count the number of semicolons in the packet. There should be one |
| 1064 | for every action. */ |
| 1065 | p = &own_buf[5]; |
| 1066 | while (p) |
| 1067 | { |
| 1068 | n++; |
| 1069 | p++; |
| 1070 | p = strchr (p, ';'); |
| 1071 | } |
| 1072 | /* Allocate room for one extra action, for the default remain-stopped |
| 1073 | behavior; if no default action is in the list, we'll need the extra |
| 1074 | slot. */ |
| 1075 | resume_info = malloc ((n + 1) * sizeof (resume_info[0])); |
| 1076 | if (resume_info == NULL) |
| 1077 | goto err; |
| 1078 | |
| 1079 | default_action.thread = -1; |
| 1080 | default_action.leave_stopped = 1; |
| 1081 | default_action.step = 0; |
| 1082 | default_action.sig = 0; |
| 1083 | |
| 1084 | p = &own_buf[5]; |
| 1085 | i = 0; |
| 1086 | while (*p) |
| 1087 | { |
| 1088 | p++; |
| 1089 | |
| 1090 | resume_info[i].leave_stopped = 0; |
| 1091 | |
| 1092 | if (p[0] == 's' || p[0] == 'S') |
| 1093 | resume_info[i].step = 1; |
| 1094 | else if (p[0] == 'c' || p[0] == 'C') |
| 1095 | resume_info[i].step = 0; |
| 1096 | else |
| 1097 | goto err; |
| 1098 | |
| 1099 | if (p[0] == 'S' || p[0] == 'C') |
| 1100 | { |
| 1101 | int sig; |
| 1102 | sig = strtol (p + 1, &q, 16); |
| 1103 | if (p == q) |
| 1104 | goto err; |
| 1105 | p = q; |
| 1106 | |
| 1107 | if (!target_signal_to_host_p (sig)) |
| 1108 | goto err; |
| 1109 | resume_info[i].sig = target_signal_to_host (sig); |
| 1110 | } |
| 1111 | else |
| 1112 | { |
| 1113 | resume_info[i].sig = 0; |
| 1114 | p = p + 1; |
| 1115 | } |
| 1116 | |
| 1117 | if (p[0] == 0) |
| 1118 | { |
| 1119 | resume_info[i].thread = -1; |
| 1120 | default_action = resume_info[i]; |
| 1121 | |
| 1122 | /* Note: we don't increment i here, we'll overwrite this entry |
| 1123 | the next time through. */ |
| 1124 | } |
| 1125 | else if (p[0] == ':') |
| 1126 | { |
| 1127 | unsigned int gdb_id = strtoul (p + 1, &q, 16); |
| 1128 | unsigned long thread_id; |
| 1129 | |
| 1130 | if (p == q) |
| 1131 | goto err; |
| 1132 | p = q; |
| 1133 | if (p[0] != ';' && p[0] != 0) |
| 1134 | goto err; |
| 1135 | |
| 1136 | thread_id = gdb_id_to_thread_id (gdb_id); |
| 1137 | if (thread_id) |
| 1138 | resume_info[i].thread = thread_id; |
| 1139 | else |
| 1140 | goto err; |
| 1141 | |
| 1142 | i++; |
| 1143 | } |
| 1144 | } |
| 1145 | |
| 1146 | resume_info[i] = default_action; |
| 1147 | |
| 1148 | /* Still used in occasional places in the backend. */ |
| 1149 | if (n == 1 && resume_info[0].thread != -1) |
| 1150 | cont_thread = resume_info[0].thread; |
| 1151 | else |
| 1152 | cont_thread = -1; |
| 1153 | set_desired_inferior (0); |
| 1154 | |
| 1155 | enable_async_io (); |
| 1156 | (*the_target->resume) (resume_info); |
| 1157 | |
| 1158 | free (resume_info); |
| 1159 | |
| 1160 | *signal = mywait (status, 1); |
| 1161 | prepare_resume_reply (own_buf, *status, *signal); |
| 1162 | disable_async_io (); |
| 1163 | return; |
| 1164 | |
| 1165 | err: |
| 1166 | write_enn (own_buf); |
| 1167 | free (resume_info); |
| 1168 | return; |
| 1169 | } |
| 1170 | |
| 1171 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
| 1172 | int |
| 1173 | handle_v_attach (char *own_buf, char *status, int *signal) |
| 1174 | { |
| 1175 | int pid; |
| 1176 | |
| 1177 | pid = strtol (own_buf + 8, NULL, 16); |
| 1178 | if (pid != 0 && attach_inferior (pid, status, signal) == 0) |
| 1179 | { |
| 1180 | /* Don't report shared library events after attaching, even if |
| 1181 | some libraries are preloaded. GDB will always poll the |
| 1182 | library list. Avoids the "stopped by shared library event" |
| 1183 | notice on the GDB side. */ |
| 1184 | dlls_changed = 0; |
| 1185 | prepare_resume_reply (own_buf, *status, *signal); |
| 1186 | return 1; |
| 1187 | } |
| 1188 | else |
| 1189 | { |
| 1190 | write_enn (own_buf); |
| 1191 | return 0; |
| 1192 | } |
| 1193 | } |
| 1194 | |
| 1195 | /* Run a new program. Return 1 if successful, 0 if failure. */ |
| 1196 | static int |
| 1197 | handle_v_run (char *own_buf, char *status, int *signal) |
| 1198 | { |
| 1199 | char *p, *next_p, **new_argv; |
| 1200 | int i, new_argc; |
| 1201 | |
| 1202 | new_argc = 0; |
| 1203 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) |
| 1204 | { |
| 1205 | p++; |
| 1206 | new_argc++; |
| 1207 | } |
| 1208 | |
| 1209 | new_argv = calloc (new_argc + 2, sizeof (char *)); |
| 1210 | if (new_argv == NULL) |
| 1211 | { |
| 1212 | write_enn (own_buf); |
| 1213 | return 0; |
| 1214 | } |
| 1215 | |
| 1216 | i = 0; |
| 1217 | for (p = own_buf + strlen ("vRun;"); *p; p = next_p) |
| 1218 | { |
| 1219 | next_p = strchr (p, ';'); |
| 1220 | if (next_p == NULL) |
| 1221 | next_p = p + strlen (p); |
| 1222 | |
| 1223 | if (i == 0 && p == next_p) |
| 1224 | new_argv[i] = NULL; |
| 1225 | else |
| 1226 | { |
| 1227 | /* FIXME: Fail request if out of memory instead of dying. */ |
| 1228 | new_argv[i] = xmalloc (1 + (next_p - p) / 2); |
| 1229 | unhexify (new_argv[i], p, (next_p - p) / 2); |
| 1230 | new_argv[i][(next_p - p) / 2] = '\0'; |
| 1231 | } |
| 1232 | |
| 1233 | if (*next_p) |
| 1234 | next_p++; |
| 1235 | i++; |
| 1236 | } |
| 1237 | new_argv[i] = NULL; |
| 1238 | |
| 1239 | if (new_argv[0] == NULL) |
| 1240 | { |
| 1241 | /* GDB didn't specify a program to run. Use the program from the |
| 1242 | last run with the new argument list. */ |
| 1243 | |
| 1244 | if (program_argv == NULL) |
| 1245 | { |
| 1246 | /* FIXME: new_argv memory leak */ |
| 1247 | write_enn (own_buf); |
| 1248 | return 0; |
| 1249 | } |
| 1250 | |
| 1251 | new_argv[0] = strdup (program_argv[0]); |
| 1252 | if (new_argv[0] == NULL) |
| 1253 | { |
| 1254 | /* FIXME: new_argv memory leak */ |
| 1255 | write_enn (own_buf); |
| 1256 | return 0; |
| 1257 | } |
| 1258 | } |
| 1259 | |
| 1260 | /* Free the old argv and install the new one. */ |
| 1261 | freeargv (program_argv); |
| 1262 | program_argv = new_argv; |
| 1263 | |
| 1264 | *signal = start_inferior (program_argv, status); |
| 1265 | if (*status == 'T') |
| 1266 | { |
| 1267 | prepare_resume_reply (own_buf, *status, *signal); |
| 1268 | return 1; |
| 1269 | } |
| 1270 | else |
| 1271 | { |
| 1272 | write_enn (own_buf); |
| 1273 | return 0; |
| 1274 | } |
| 1275 | } |
| 1276 | |
| 1277 | /* Handle all of the extended 'v' packets. */ |
| 1278 | void |
| 1279 | handle_v_requests (char *own_buf, char *status, int *signal, |
| 1280 | int packet_len, int *new_packet_len) |
| 1281 | { |
| 1282 | if (!disable_packet_vCont) |
| 1283 | { |
| 1284 | if (strncmp (own_buf, "vCont;", 6) == 0) |
| 1285 | { |
| 1286 | require_running (own_buf); |
| 1287 | handle_v_cont (own_buf, status, signal); |
| 1288 | return; |
| 1289 | } |
| 1290 | |
| 1291 | if (strncmp (own_buf, "vCont?", 6) == 0) |
| 1292 | { |
| 1293 | strcpy (own_buf, "vCont;c;C;s;S"); |
| 1294 | return; |
| 1295 | } |
| 1296 | } |
| 1297 | |
| 1298 | if (strncmp (own_buf, "vFile:", 6) == 0 |
| 1299 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
| 1300 | return; |
| 1301 | |
| 1302 | if (strncmp (own_buf, "vAttach;", 8) == 0) |
| 1303 | { |
| 1304 | if (target_running ()) |
| 1305 | { |
| 1306 | fprintf (stderr, "Already debugging a process\n"); |
| 1307 | write_enn (own_buf); |
| 1308 | return; |
| 1309 | } |
| 1310 | handle_v_attach (own_buf, status, signal); |
| 1311 | return; |
| 1312 | } |
| 1313 | |
| 1314 | if (strncmp (own_buf, "vRun;", 5) == 0) |
| 1315 | { |
| 1316 | if (target_running ()) |
| 1317 | { |
| 1318 | fprintf (stderr, "Already debugging a process\n"); |
| 1319 | write_enn (own_buf); |
| 1320 | return; |
| 1321 | } |
| 1322 | handle_v_run (own_buf, status, signal); |
| 1323 | return; |
| 1324 | } |
| 1325 | |
| 1326 | /* Otherwise we didn't know what packet it was. Say we didn't |
| 1327 | understand it. */ |
| 1328 | own_buf[0] = 0; |
| 1329 | return; |
| 1330 | } |
| 1331 | |
| 1332 | void |
| 1333 | myresume (char *own_buf, int step, int *signalp, char *statusp) |
| 1334 | { |
| 1335 | struct thread_resume resume_info[2]; |
| 1336 | int n = 0; |
| 1337 | int sig = *signalp; |
| 1338 | |
| 1339 | set_desired_inferior (0); |
| 1340 | |
| 1341 | if (step || sig || (cont_thread != 0 && cont_thread != -1)) |
| 1342 | { |
| 1343 | resume_info[0].thread |
| 1344 | = ((struct inferior_list_entry *) current_inferior)->id; |
| 1345 | resume_info[0].step = step; |
| 1346 | resume_info[0].sig = sig; |
| 1347 | resume_info[0].leave_stopped = 0; |
| 1348 | n++; |
| 1349 | } |
| 1350 | resume_info[n].thread = -1; |
| 1351 | resume_info[n].step = 0; |
| 1352 | resume_info[n].sig = 0; |
| 1353 | resume_info[n].leave_stopped = (cont_thread != 0 && cont_thread != -1); |
| 1354 | |
| 1355 | enable_async_io (); |
| 1356 | (*the_target->resume) (resume_info); |
| 1357 | *signalp = mywait (statusp, 1); |
| 1358 | prepare_resume_reply (own_buf, *statusp, *signalp); |
| 1359 | disable_async_io (); |
| 1360 | } |
| 1361 | |
| 1362 | static void |
| 1363 | gdbserver_version (void) |
| 1364 | { |
| 1365 | printf ("GNU gdbserver %s%s\n" |
| 1366 | "Copyright (C) 2009 Free Software Foundation, Inc.\n" |
| 1367 | "gdbserver is free software, covered by the GNU General Public License.\n" |
| 1368 | "This gdbserver was configured as \"%s\"\n", |
| 1369 | PKGVERSION, version, host_name); |
| 1370 | } |
| 1371 | |
| 1372 | static void |
| 1373 | gdbserver_usage (FILE *stream) |
| 1374 | { |
| 1375 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
| 1376 | "\tgdbserver [OPTIONS] --attach COMM PID\n" |
| 1377 | "\tgdbserver [OPTIONS] --multi COMM\n" |
| 1378 | "\n" |
| 1379 | "COMM may either be a tty device (for serial debugging), or \n" |
| 1380 | "HOST:PORT to listen for a TCP connection.\n" |
| 1381 | "\n" |
| 1382 | "Options:\n" |
| 1383 | " --debug Enable general debugging output.\n" |
| 1384 | " --remote-debug Enable remote protocol debugging output.\n" |
| 1385 | " --version Display version information and exit.\n" |
| 1386 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n"); |
| 1387 | if (REPORT_BUGS_TO[0] && stream == stdout) |
| 1388 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); |
| 1389 | } |
| 1390 | |
| 1391 | static void |
| 1392 | gdbserver_show_disableable (FILE *stream) |
| 1393 | { |
| 1394 | fprintf (stream, "Disableable packets:\n" |
| 1395 | " vCont \tAll vCont packets\n" |
| 1396 | " qC \tQuerying the current thread\n" |
| 1397 | " qfThreadInfo\tThread listing\n" |
| 1398 | " Tthread \tPassing the thread specifier in the T stop reply packet\n" |
| 1399 | " threads \tAll of the above\n"); |
| 1400 | } |
| 1401 | |
| 1402 | |
| 1403 | #undef require_running |
| 1404 | #define require_running(BUF) \ |
| 1405 | if (!target_running ()) \ |
| 1406 | { \ |
| 1407 | write_enn (BUF); \ |
| 1408 | break; \ |
| 1409 | } |
| 1410 | |
| 1411 | int |
| 1412 | main (int argc, char *argv[]) |
| 1413 | { |
| 1414 | char ch, status, *own_buf; |
| 1415 | unsigned char *mem_buf; |
| 1416 | int i = 0; |
| 1417 | int signal; |
| 1418 | unsigned int len; |
| 1419 | CORE_ADDR mem_addr; |
| 1420 | int bad_attach; |
| 1421 | int pid; |
| 1422 | char *arg_end, *port; |
| 1423 | char **next_arg = &argv[1]; |
| 1424 | int multi_mode = 0; |
| 1425 | int attach = 0; |
| 1426 | int was_running; |
| 1427 | |
| 1428 | while (*next_arg != NULL && **next_arg == '-') |
| 1429 | { |
| 1430 | if (strcmp (*next_arg, "--version") == 0) |
| 1431 | { |
| 1432 | gdbserver_version (); |
| 1433 | exit (0); |
| 1434 | } |
| 1435 | else if (strcmp (*next_arg, "--help") == 0) |
| 1436 | { |
| 1437 | gdbserver_usage (stdout); |
| 1438 | exit (0); |
| 1439 | } |
| 1440 | else if (strcmp (*next_arg, "--attach") == 0) |
| 1441 | attach = 1; |
| 1442 | else if (strcmp (*next_arg, "--multi") == 0) |
| 1443 | multi_mode = 1; |
| 1444 | else if (strcmp (*next_arg, "--wrapper") == 0) |
| 1445 | { |
| 1446 | next_arg++; |
| 1447 | |
| 1448 | wrapper_argv = next_arg; |
| 1449 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) |
| 1450 | next_arg++; |
| 1451 | |
| 1452 | if (next_arg == wrapper_argv || *next_arg == NULL) |
| 1453 | { |
| 1454 | gdbserver_usage (stderr); |
| 1455 | exit (1); |
| 1456 | } |
| 1457 | |
| 1458 | /* Consume the "--". */ |
| 1459 | *next_arg = NULL; |
| 1460 | } |
| 1461 | else if (strcmp (*next_arg, "--debug") == 0) |
| 1462 | debug_threads = 1; |
| 1463 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
| 1464 | remote_debug = 1; |
| 1465 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
| 1466 | { |
| 1467 | gdbserver_show_disableable (stdout); |
| 1468 | exit (0); |
| 1469 | } |
| 1470 | else if (strncmp (*next_arg, |
| 1471 | "--disable-packet=", |
| 1472 | sizeof ("--disable-packet=") - 1) == 0) |
| 1473 | { |
| 1474 | char *packets, *tok; |
| 1475 | |
| 1476 | packets = *next_arg += sizeof ("--disable-packet=") - 1; |
| 1477 | for (tok = strtok (packets, ","); |
| 1478 | tok != NULL; |
| 1479 | tok = strtok (NULL, ",")) |
| 1480 | { |
| 1481 | if (strcmp ("vCont", tok) == 0) |
| 1482 | disable_packet_vCont = 1; |
| 1483 | else if (strcmp ("Tthread", tok) == 0) |
| 1484 | disable_packet_Tthread = 1; |
| 1485 | else if (strcmp ("qC", tok) == 0) |
| 1486 | disable_packet_qC = 1; |
| 1487 | else if (strcmp ("qfThreadInfo", tok) == 0) |
| 1488 | disable_packet_qfThreadInfo = 1; |
| 1489 | else if (strcmp ("threads", tok) == 0) |
| 1490 | { |
| 1491 | disable_packet_vCont = 1; |
| 1492 | disable_packet_Tthread = 1; |
| 1493 | disable_packet_qC = 1; |
| 1494 | disable_packet_qfThreadInfo = 1; |
| 1495 | } |
| 1496 | else |
| 1497 | { |
| 1498 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", |
| 1499 | tok); |
| 1500 | gdbserver_show_disableable (stderr); |
| 1501 | exit (1); |
| 1502 | } |
| 1503 | } |
| 1504 | } |
| 1505 | else |
| 1506 | { |
| 1507 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); |
| 1508 | exit (1); |
| 1509 | } |
| 1510 | |
| 1511 | next_arg++; |
| 1512 | continue; |
| 1513 | } |
| 1514 | |
| 1515 | if (setjmp (toplevel)) |
| 1516 | { |
| 1517 | fprintf (stderr, "Exiting\n"); |
| 1518 | exit (1); |
| 1519 | } |
| 1520 | |
| 1521 | port = *next_arg; |
| 1522 | next_arg++; |
| 1523 | if (port == NULL || (!attach && !multi_mode && *next_arg == NULL)) |
| 1524 | { |
| 1525 | gdbserver_usage (stderr); |
| 1526 | exit (1); |
| 1527 | } |
| 1528 | |
| 1529 | bad_attach = 0; |
| 1530 | pid = 0; |
| 1531 | |
| 1532 | /* --attach used to come after PORT, so allow it there for |
| 1533 | compatibility. */ |
| 1534 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) |
| 1535 | { |
| 1536 | attach = 1; |
| 1537 | next_arg++; |
| 1538 | } |
| 1539 | |
| 1540 | if (attach |
| 1541 | && (*next_arg == NULL |
| 1542 | || (*next_arg)[0] == '\0' |
| 1543 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 |
| 1544 | || *arg_end != '\0' |
| 1545 | || next_arg[1] != NULL)) |
| 1546 | bad_attach = 1; |
| 1547 | |
| 1548 | if (bad_attach) |
| 1549 | { |
| 1550 | gdbserver_usage (stderr); |
| 1551 | exit (1); |
| 1552 | } |
| 1553 | |
| 1554 | initialize_async_io (); |
| 1555 | initialize_low (); |
| 1556 | |
| 1557 | own_buf = xmalloc (PBUFSIZ + 1); |
| 1558 | mem_buf = xmalloc (PBUFSIZ); |
| 1559 | |
| 1560 | if (pid == 0 && *next_arg != NULL) |
| 1561 | { |
| 1562 | int i, n; |
| 1563 | |
| 1564 | n = argc - (next_arg - argv); |
| 1565 | program_argv = xmalloc (sizeof (char *) * (n + 1)); |
| 1566 | for (i = 0; i < n; i++) |
| 1567 | program_argv[i] = xstrdup (next_arg[i]); |
| 1568 | program_argv[i] = NULL; |
| 1569 | |
| 1570 | /* Wait till we are at first instruction in program. */ |
| 1571 | signal = start_inferior (program_argv, &status); |
| 1572 | |
| 1573 | /* We are now (hopefully) stopped at the first instruction of |
| 1574 | the target process. This assumes that the target process was |
| 1575 | successfully created. */ |
| 1576 | } |
| 1577 | else if (pid != 0) |
| 1578 | { |
| 1579 | if (attach_inferior (pid, &status, &signal) == -1) |
| 1580 | error ("Attaching not supported on this target"); |
| 1581 | |
| 1582 | /* Otherwise succeeded. */ |
| 1583 | } |
| 1584 | else |
| 1585 | { |
| 1586 | status = 'W'; |
| 1587 | signal = 0; |
| 1588 | } |
| 1589 | |
| 1590 | /* Don't report shared library events on the initial connection, |
| 1591 | even if some libraries are preloaded. Avoids the "stopped by |
| 1592 | shared library event" notice on gdb side. */ |
| 1593 | dlls_changed = 0; |
| 1594 | |
| 1595 | if (setjmp (toplevel)) |
| 1596 | { |
| 1597 | fprintf (stderr, "Killing inferior\n"); |
| 1598 | kill_inferior (); |
| 1599 | exit (1); |
| 1600 | } |
| 1601 | |
| 1602 | if (status == 'W' || status == 'X') |
| 1603 | was_running = 0; |
| 1604 | else |
| 1605 | was_running = 1; |
| 1606 | |
| 1607 | if (!was_running && !multi_mode) |
| 1608 | { |
| 1609 | fprintf (stderr, "No program to debug. GDBserver exiting.\n"); |
| 1610 | exit (1); |
| 1611 | } |
| 1612 | |
| 1613 | while (1) |
| 1614 | { |
| 1615 | noack_mode = 0; |
| 1616 | remote_open (port); |
| 1617 | |
| 1618 | restart: |
| 1619 | if (setjmp (toplevel) != 0) |
| 1620 | { |
| 1621 | /* An error occurred. */ |
| 1622 | if (response_needed) |
| 1623 | { |
| 1624 | write_enn (own_buf); |
| 1625 | putpkt (own_buf); |
| 1626 | } |
| 1627 | } |
| 1628 | |
| 1629 | disable_async_io (); |
| 1630 | while (!exit_requested) |
| 1631 | { |
| 1632 | unsigned char sig; |
| 1633 | int packet_len; |
| 1634 | int new_packet_len = -1; |
| 1635 | |
| 1636 | response_needed = 0; |
| 1637 | packet_len = getpkt (own_buf); |
| 1638 | if (packet_len <= 0) |
| 1639 | break; |
| 1640 | response_needed = 1; |
| 1641 | |
| 1642 | i = 0; |
| 1643 | ch = own_buf[i++]; |
| 1644 | switch (ch) |
| 1645 | { |
| 1646 | case 'q': |
| 1647 | handle_query (own_buf, packet_len, &new_packet_len); |
| 1648 | break; |
| 1649 | case 'Q': |
| 1650 | handle_general_set (own_buf); |
| 1651 | break; |
| 1652 | case 'D': |
| 1653 | require_running (own_buf); |
| 1654 | fprintf (stderr, "Detaching from inferior\n"); |
| 1655 | if (detach_inferior () != 0) |
| 1656 | write_enn (own_buf); |
| 1657 | else |
| 1658 | { |
| 1659 | write_ok (own_buf); |
| 1660 | |
| 1661 | if (extended_protocol) |
| 1662 | { |
| 1663 | /* Treat this like a normal program exit. */ |
| 1664 | signal = 0; |
| 1665 | status = 'W'; |
| 1666 | } |
| 1667 | else |
| 1668 | { |
| 1669 | putpkt (own_buf); |
| 1670 | remote_close (); |
| 1671 | |
| 1672 | /* If we are attached, then we can exit. Otherwise, we |
| 1673 | need to hang around doing nothing, until the child |
| 1674 | is gone. */ |
| 1675 | if (!attached) |
| 1676 | join_inferior (); |
| 1677 | |
| 1678 | exit (0); |
| 1679 | } |
| 1680 | } |
| 1681 | break; |
| 1682 | case '!': |
| 1683 | extended_protocol = 1; |
| 1684 | write_ok (own_buf); |
| 1685 | break; |
| 1686 | case '?': |
| 1687 | prepare_resume_reply (own_buf, status, signal); |
| 1688 | break; |
| 1689 | case 'H': |
| 1690 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') |
| 1691 | { |
| 1692 | unsigned long gdb_id, thread_id; |
| 1693 | |
| 1694 | require_running (own_buf); |
| 1695 | gdb_id = strtoul (&own_buf[2], NULL, 16); |
| 1696 | if (gdb_id == 0 || gdb_id == -1) |
| 1697 | thread_id = gdb_id; |
| 1698 | else |
| 1699 | { |
| 1700 | thread_id = gdb_id_to_thread_id (gdb_id); |
| 1701 | if (thread_id == 0) |
| 1702 | { |
| 1703 | write_enn (own_buf); |
| 1704 | break; |
| 1705 | } |
| 1706 | } |
| 1707 | |
| 1708 | if (own_buf[1] == 'g') |
| 1709 | { |
| 1710 | general_thread = thread_id; |
| 1711 | set_desired_inferior (1); |
| 1712 | } |
| 1713 | else if (own_buf[1] == 'c') |
| 1714 | cont_thread = thread_id; |
| 1715 | else if (own_buf[1] == 's') |
| 1716 | step_thread = thread_id; |
| 1717 | |
| 1718 | write_ok (own_buf); |
| 1719 | } |
| 1720 | else |
| 1721 | { |
| 1722 | /* Silently ignore it so that gdb can extend the protocol |
| 1723 | without compatibility headaches. */ |
| 1724 | own_buf[0] = '\0'; |
| 1725 | } |
| 1726 | break; |
| 1727 | case 'g': |
| 1728 | require_running (own_buf); |
| 1729 | set_desired_inferior (1); |
| 1730 | registers_to_string (own_buf); |
| 1731 | break; |
| 1732 | case 'G': |
| 1733 | require_running (own_buf); |
| 1734 | set_desired_inferior (1); |
| 1735 | registers_from_string (&own_buf[1]); |
| 1736 | write_ok (own_buf); |
| 1737 | break; |
| 1738 | case 'm': |
| 1739 | require_running (own_buf); |
| 1740 | decode_m_packet (&own_buf[1], &mem_addr, &len); |
| 1741 | if (read_inferior_memory (mem_addr, mem_buf, len) == 0) |
| 1742 | convert_int_to_ascii (mem_buf, own_buf, len); |
| 1743 | else |
| 1744 | write_enn (own_buf); |
| 1745 | break; |
| 1746 | case 'M': |
| 1747 | require_running (own_buf); |
| 1748 | decode_M_packet (&own_buf[1], &mem_addr, &len, mem_buf); |
| 1749 | if (write_inferior_memory (mem_addr, mem_buf, len) == 0) |
| 1750 | write_ok (own_buf); |
| 1751 | else |
| 1752 | write_enn (own_buf); |
| 1753 | break; |
| 1754 | case 'X': |
| 1755 | require_running (own_buf); |
| 1756 | if (decode_X_packet (&own_buf[1], packet_len - 1, |
| 1757 | &mem_addr, &len, mem_buf) < 0 |
| 1758 | || write_inferior_memory (mem_addr, mem_buf, len) != 0) |
| 1759 | write_enn (own_buf); |
| 1760 | else |
| 1761 | write_ok (own_buf); |
| 1762 | break; |
| 1763 | case 'C': |
| 1764 | require_running (own_buf); |
| 1765 | convert_ascii_to_int (own_buf + 1, &sig, 1); |
| 1766 | if (target_signal_to_host_p (sig)) |
| 1767 | signal = target_signal_to_host (sig); |
| 1768 | else |
| 1769 | signal = 0; |
| 1770 | myresume (own_buf, 0, &signal, &status); |
| 1771 | break; |
| 1772 | case 'S': |
| 1773 | require_running (own_buf); |
| 1774 | convert_ascii_to_int (own_buf + 1, &sig, 1); |
| 1775 | if (target_signal_to_host_p (sig)) |
| 1776 | signal = target_signal_to_host (sig); |
| 1777 | else |
| 1778 | signal = 0; |
| 1779 | myresume (own_buf, 1, &signal, &status); |
| 1780 | break; |
| 1781 | case 'c': |
| 1782 | require_running (own_buf); |
| 1783 | signal = 0; |
| 1784 | myresume (own_buf, 0, &signal, &status); |
| 1785 | break; |
| 1786 | case 's': |
| 1787 | require_running (own_buf); |
| 1788 | signal = 0; |
| 1789 | myresume (own_buf, 1, &signal, &status); |
| 1790 | break; |
| 1791 | case 'Z': |
| 1792 | { |
| 1793 | char *lenptr; |
| 1794 | char *dataptr; |
| 1795 | CORE_ADDR addr = strtoul (&own_buf[3], &lenptr, 16); |
| 1796 | int len = strtol (lenptr + 1, &dataptr, 16); |
| 1797 | char type = own_buf[1]; |
| 1798 | |
| 1799 | if (the_target->insert_watchpoint == NULL |
| 1800 | || (type < '2' || type > '4')) |
| 1801 | { |
| 1802 | /* No watchpoint support or not a watchpoint command; |
| 1803 | unrecognized either way. */ |
| 1804 | own_buf[0] = '\0'; |
| 1805 | } |
| 1806 | else |
| 1807 | { |
| 1808 | int res; |
| 1809 | |
| 1810 | require_running (own_buf); |
| 1811 | res = (*the_target->insert_watchpoint) (type, addr, len); |
| 1812 | if (res == 0) |
| 1813 | write_ok (own_buf); |
| 1814 | else if (res == 1) |
| 1815 | /* Unsupported. */ |
| 1816 | own_buf[0] = '\0'; |
| 1817 | else |
| 1818 | write_enn (own_buf); |
| 1819 | } |
| 1820 | break; |
| 1821 | } |
| 1822 | case 'z': |
| 1823 | { |
| 1824 | char *lenptr; |
| 1825 | char *dataptr; |
| 1826 | CORE_ADDR addr = strtoul (&own_buf[3], &lenptr, 16); |
| 1827 | int len = strtol (lenptr + 1, &dataptr, 16); |
| 1828 | char type = own_buf[1]; |
| 1829 | |
| 1830 | if (the_target->remove_watchpoint == NULL |
| 1831 | || (type < '2' || type > '4')) |
| 1832 | { |
| 1833 | /* No watchpoint support or not a watchpoint command; |
| 1834 | unrecognized either way. */ |
| 1835 | own_buf[0] = '\0'; |
| 1836 | } |
| 1837 | else |
| 1838 | { |
| 1839 | int res; |
| 1840 | |
| 1841 | require_running (own_buf); |
| 1842 | res = (*the_target->remove_watchpoint) (type, addr, len); |
| 1843 | if (res == 0) |
| 1844 | write_ok (own_buf); |
| 1845 | else if (res == 1) |
| 1846 | /* Unsupported. */ |
| 1847 | own_buf[0] = '\0'; |
| 1848 | else |
| 1849 | write_enn (own_buf); |
| 1850 | } |
| 1851 | break; |
| 1852 | } |
| 1853 | case 'k': |
| 1854 | response_needed = 0; |
| 1855 | if (!target_running ()) |
| 1856 | /* The packet we received doesn't make sense - but we |
| 1857 | can't reply to it, either. */ |
| 1858 | goto restart; |
| 1859 | |
| 1860 | fprintf (stderr, "Killing inferior\n"); |
| 1861 | kill_inferior (); |
| 1862 | |
| 1863 | /* When using the extended protocol, we wait with no |
| 1864 | program running. The traditional protocol will exit |
| 1865 | instead. */ |
| 1866 | if (extended_protocol) |
| 1867 | { |
| 1868 | status = 'X'; |
| 1869 | signal = TARGET_SIGNAL_KILL; |
| 1870 | was_running = 0; |
| 1871 | goto restart; |
| 1872 | } |
| 1873 | else |
| 1874 | { |
| 1875 | exit (0); |
| 1876 | break; |
| 1877 | } |
| 1878 | case 'T': |
| 1879 | { |
| 1880 | unsigned long gdb_id, thread_id; |
| 1881 | |
| 1882 | require_running (own_buf); |
| 1883 | gdb_id = strtoul (&own_buf[1], NULL, 16); |
| 1884 | thread_id = gdb_id_to_thread_id (gdb_id); |
| 1885 | if (thread_id == 0) |
| 1886 | { |
| 1887 | write_enn (own_buf); |
| 1888 | break; |
| 1889 | } |
| 1890 | |
| 1891 | if (mythread_alive (thread_id)) |
| 1892 | write_ok (own_buf); |
| 1893 | else |
| 1894 | write_enn (own_buf); |
| 1895 | } |
| 1896 | break; |
| 1897 | case 'R': |
| 1898 | response_needed = 0; |
| 1899 | |
| 1900 | /* Restarting the inferior is only supported in the |
| 1901 | extended protocol. */ |
| 1902 | if (extended_protocol) |
| 1903 | { |
| 1904 | if (target_running ()) |
| 1905 | kill_inferior (); |
| 1906 | fprintf (stderr, "GDBserver restarting\n"); |
| 1907 | |
| 1908 | /* Wait till we are at 1st instruction in prog. */ |
| 1909 | if (program_argv != NULL) |
| 1910 | signal = start_inferior (program_argv, &status); |
| 1911 | else |
| 1912 | { |
| 1913 | status = 'X'; |
| 1914 | signal = TARGET_SIGNAL_KILL; |
| 1915 | } |
| 1916 | goto restart; |
| 1917 | } |
| 1918 | else |
| 1919 | { |
| 1920 | /* It is a request we don't understand. Respond with an |
| 1921 | empty packet so that gdb knows that we don't support this |
| 1922 | request. */ |
| 1923 | own_buf[0] = '\0'; |
| 1924 | break; |
| 1925 | } |
| 1926 | case 'v': |
| 1927 | /* Extended (long) request. */ |
| 1928 | handle_v_requests (own_buf, &status, &signal, |
| 1929 | packet_len, &new_packet_len); |
| 1930 | break; |
| 1931 | |
| 1932 | default: |
| 1933 | /* It is a request we don't understand. Respond with an |
| 1934 | empty packet so that gdb knows that we don't support this |
| 1935 | request. */ |
| 1936 | own_buf[0] = '\0'; |
| 1937 | break; |
| 1938 | } |
| 1939 | |
| 1940 | if (new_packet_len != -1) |
| 1941 | putpkt_binary (own_buf, new_packet_len); |
| 1942 | else |
| 1943 | putpkt (own_buf); |
| 1944 | |
| 1945 | response_needed = 0; |
| 1946 | |
| 1947 | if (was_running && (status == 'W' || status == 'X')) |
| 1948 | { |
| 1949 | was_running = 0; |
| 1950 | |
| 1951 | if (status == 'W') |
| 1952 | fprintf (stderr, |
| 1953 | "\nChild exited with status %d\n", signal); |
| 1954 | if (status == 'X') |
| 1955 | fprintf (stderr, "\nChild terminated with signal = 0x%x (%s)\n", |
| 1956 | target_signal_to_host (signal), |
| 1957 | target_signal_to_name (signal)); |
| 1958 | |
| 1959 | if (extended_protocol) |
| 1960 | goto restart; |
| 1961 | else |
| 1962 | { |
| 1963 | fprintf (stderr, "GDBserver exiting\n"); |
| 1964 | exit (0); |
| 1965 | } |
| 1966 | } |
| 1967 | |
| 1968 | if (status != 'W' && status != 'X') |
| 1969 | was_running = 1; |
| 1970 | } |
| 1971 | |
| 1972 | /* If an exit was requested (using the "monitor exit" command), |
| 1973 | terminate now. The only other way to get here is for |
| 1974 | getpkt to fail; close the connection and reopen it at the |
| 1975 | top of the loop. */ |
| 1976 | |
| 1977 | if (exit_requested) |
| 1978 | { |
| 1979 | remote_close (); |
| 1980 | if (attached && target_running ()) |
| 1981 | detach_inferior (); |
| 1982 | else if (target_running ()) |
| 1983 | kill_inferior (); |
| 1984 | exit (0); |
| 1985 | } |
| 1986 | else |
| 1987 | { |
| 1988 | fprintf (stderr, "Remote side has terminated connection. " |
| 1989 | "GDBserver will reopen the connection.\n"); |
| 1990 | remote_close (); |
| 1991 | } |
| 1992 | } |
| 1993 | } |