Commit | Line | Data |
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c906108c | 1 | /* Main code for remote server for GDB. |
e2882c85 | 2 | Copyright (C) 1989-2018 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "server.h" | |
623b6bdf | 20 | #include "gdbthread.h" |
d1feda86 | 21 | #include "agent.h" |
14a00470 | 22 | #include "notif.h" |
3aee8918 | 23 | #include "tdesc.h" |
9c3d6531 | 24 | #include "rsp-low.h" |
f348d89a | 25 | #include "signals-state-save-restore.h" |
87ce2a04 | 26 | #include <ctype.h> |
a9fa9f7d | 27 | #include <unistd.h> |
68070c10 | 28 | #if HAVE_SIGNAL_H |
a9fa9f7d | 29 | #include <signal.h> |
68070c10 | 30 | #endif |
87ce2a04 | 31 | #include "gdb_vecs.h" |
8bdce1ff | 32 | #include "gdb_wait.h" |
9accd112 | 33 | #include "btrace-common.h" |
602e3198 | 34 | #include "filestuff.h" |
c144c7a0 | 35 | #include "tracepoint.h" |
799cdc37 | 36 | #include "dll.h" |
533b0600 | 37 | #include "hostio.h" |
7c5ded6a | 38 | #include <vector> |
2090129c SDJ |
39 | #include "common-inferior.h" |
40 | #include "job-control.h" | |
41 | #include "environ.h" | |
25e3c82c SDJ |
42 | #include "filenames.h" |
43 | #include "pathstuff.h" | |
2090129c | 44 | |
6d580b63 YQ |
45 | #include "common/selftest.h" |
46 | ||
f8a4e119 SM |
47 | #define require_running_or_return(BUF) \ |
48 | if (!target_running ()) \ | |
49 | { \ | |
50 | write_enn (BUF); \ | |
51 | return; \ | |
52 | } | |
53 | ||
54 | #define require_running_or_break(BUF) \ | |
55 | if (!target_running ()) \ | |
56 | { \ | |
57 | write_enn (BUF); \ | |
58 | break; \ | |
59 | } | |
60 | ||
b4987c95 SDJ |
61 | /* String containing the current directory (what getwd would return). */ |
62 | ||
63 | char *current_directory; | |
64 | ||
2090129c SDJ |
65 | /* The environment to pass to the inferior when creating it. */ |
66 | ||
9a6c7d9c | 67 | static gdb_environ our_environ; |
2090129c SDJ |
68 | |
69 | /* Start the inferior using a shell. */ | |
70 | ||
71 | /* We always try to start the inferior using a shell. */ | |
72 | ||
73 | int startup_with_shell = 1; | |
a9fa9f7d | 74 | |
122f36ef PA |
75 | /* The thread set with an `Hc' packet. `Hc' is deprecated in favor of |
76 | `vCont'. Note the multi-process extensions made `vCont' a | |
77 | requirement, so `Hc pPID.TID' is pretty much undefined. So | |
78 | CONT_THREAD can be null_ptid for no `Hc' thread, minus_one_ptid for | |
79 | resuming all threads of the process (again, `Hc' isn't used for | |
40e91bc7 | 80 | multi-process), or a specific thread ptid_t. */ |
95954743 | 81 | ptid_t cont_thread; |
122f36ef PA |
82 | |
83 | /* The thread set with an `Hg' packet. */ | |
95954743 | 84 | ptid_t general_thread; |
5b1c542e | 85 | |
0d62e5e8 DJ |
86 | int server_waiting; |
87 | ||
17b1509a | 88 | static int extended_protocol; |
2d717e4f DJ |
89 | static int response_needed; |
90 | static int exit_requested; | |
91 | ||
03f2bd59 JK |
92 | /* --once: Exit after the first connection has closed. */ |
93 | int run_once; | |
94 | ||
95954743 | 95 | int multi_process; |
89245bc0 DB |
96 | int report_fork_events; |
97 | int report_vfork_events; | |
94585166 | 98 | int report_exec_events; |
65706a29 | 99 | int report_thread_events; |
f2faf941 PA |
100 | |
101 | /* Whether to report TARGET_WAITKING_NO_RESUMED events. */ | |
102 | static int report_no_resumed; | |
103 | ||
bd99dc85 | 104 | int non_stop; |
1ec68e26 PA |
105 | int swbreak_feature; |
106 | int hwbreak_feature; | |
bd99dc85 | 107 | |
750ce8d1 YQ |
108 | /* True if the "vContSupported" feature is active. In that case, GDB |
109 | wants us to report whether single step is supported in the reply to | |
110 | "vCont?" packet. */ | |
111 | static int vCont_supported; | |
112 | ||
03583c20 UW |
113 | /* Whether we should attempt to disable the operating system's address |
114 | space randomization feature before starting an inferior. */ | |
115 | int disable_randomization = 1; | |
116 | ||
25e3c82c SDJ |
117 | static struct { |
118 | /* Set the PROGRAM_PATH. Here we adjust the path of the provided | |
119 | binary if needed. */ | |
120 | void set (gdb::unique_xmalloc_ptr<char> &&path) | |
121 | { | |
122 | m_path = std::move (path); | |
123 | ||
124 | /* Make sure we're using the absolute path of the inferior when | |
125 | creating it. */ | |
126 | if (!contains_dir_separator (m_path.get ())) | |
127 | { | |
128 | int reg_file_errno; | |
129 | ||
130 | /* Check if the file is in our CWD. If it is, then we prefix | |
131 | its name with CURRENT_DIRECTORY. Otherwise, we leave the | |
132 | name as-is because we'll try searching for it in $PATH. */ | |
133 | if (is_regular_file (m_path.get (), ®_file_errno)) | |
134 | m_path = gdb_abspath (m_path.get ()); | |
135 | } | |
136 | } | |
137 | ||
138 | /* Return the PROGRAM_PATH. */ | |
139 | char *get () | |
140 | { return m_path.get (); } | |
141 | ||
142 | private: | |
143 | /* The program name, adjusted if needed. */ | |
144 | gdb::unique_xmalloc_ptr<char> m_path; | |
145 | } program_path; | |
2090129c SDJ |
146 | static std::vector<char *> program_args; |
147 | static std::string wrapper_argv; | |
2d717e4f | 148 | |
a493e3e2 PA |
149 | int pass_signals[GDB_SIGNAL_LAST]; |
150 | int program_signals[GDB_SIGNAL_LAST]; | |
9b224c5e | 151 | int program_signals_p; |
89be2091 | 152 | |
a9fa9f7d DJ |
153 | /* The PID of the originally created or attached inferior. Used to |
154 | send signals to the process when GDB sends us an asynchronous interrupt | |
155 | (user hitting Control-C in the client), and to wait for the child to exit | |
156 | when no longer debugging it. */ | |
157 | ||
a1928bad | 158 | unsigned long signal_pid; |
a9fa9f7d | 159 | |
ec56be1b PA |
160 | /* Set if you want to disable optional thread related packets support |
161 | in gdbserver, for the sake of testing GDB against stubs that don't | |
162 | support them. */ | |
163 | int disable_packet_vCont; | |
164 | int disable_packet_Tthread; | |
165 | int disable_packet_qC; | |
166 | int disable_packet_qfThreadInfo; | |
167 | ||
5b1c542e | 168 | /* Last status reported to GDB. */ |
2090129c SDJ |
169 | struct target_waitstatus last_status; |
170 | ptid_t last_ptid; | |
5b1c542e | 171 | |
28170b88 | 172 | char *own_buf; |
bd99dc85 PA |
173 | static unsigned char *mem_buf; |
174 | ||
14a00470 YQ |
175 | /* A sub-class of 'struct notif_event' for stop, holding information |
176 | relative to a single stop reply. We keep a queue of these to | |
177 | push to GDB in non-stop mode. */ | |
178 | ||
bd99dc85 PA |
179 | struct vstop_notif |
180 | { | |
14a00470 | 181 | struct notif_event base; |
bd99dc85 PA |
182 | |
183 | /* Thread or process that got the event. */ | |
95954743 | 184 | ptid_t ptid; |
bd99dc85 PA |
185 | |
186 | /* Event info. */ | |
187 | struct target_waitstatus status; | |
188 | }; | |
189 | ||
f4abbc16 MM |
190 | /* The current btrace configuration. This is gdbserver's mirror of GDB's |
191 | btrace configuration. */ | |
192 | static struct btrace_config current_btrace_conf; | |
193 | ||
14a00470 | 194 | DEFINE_QUEUE_P (notif_event_p); |
bd99dc85 PA |
195 | |
196 | /* Put a stop reply to the stop reply queue. */ | |
197 | ||
198 | static void | |
95954743 | 199 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 200 | { |
8d749320 | 201 | struct vstop_notif *new_notif = XNEW (struct vstop_notif); |
bd99dc85 | 202 | |
bd99dc85 PA |
203 | new_notif->ptid = ptid; |
204 | new_notif->status = *status; | |
205 | ||
14a00470 | 206 | notif_event_enque (¬if_stop, (struct notif_event *) new_notif); |
bd99dc85 PA |
207 | } |
208 | ||
14a00470 | 209 | static int |
465a859e PA |
210 | remove_all_on_match_ptid (QUEUE (notif_event_p) *q, |
211 | QUEUE_ITER (notif_event_p) *iter, | |
212 | struct notif_event *event, | |
213 | void *data) | |
bd99dc85 | 214 | { |
465a859e PA |
215 | ptid_t filter_ptid = *(ptid_t *) data; |
216 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; | |
d20a8ad9 | 217 | |
465a859e | 218 | if (ptid_match (vstop_event->ptid, filter_ptid)) |
bd99dc85 | 219 | { |
14a00470 YQ |
220 | if (q->free_func != NULL) |
221 | q->free_func (event); | |
222 | ||
223 | QUEUE_remove_elem (notif_event_p, q, iter); | |
bd99dc85 | 224 | } |
14a00470 YQ |
225 | |
226 | return 1; | |
bd99dc85 PA |
227 | } |
228 | ||
465a859e | 229 | /* See server.h. */ |
bd99dc85 | 230 | |
465a859e PA |
231 | void |
232 | discard_queued_stop_replies (ptid_t ptid) | |
bd99dc85 | 233 | { |
14a00470 | 234 | QUEUE_iterate (notif_event_p, notif_stop.queue, |
465a859e | 235 | remove_all_on_match_ptid, &ptid); |
bd99dc85 PA |
236 | } |
237 | ||
bd99dc85 | 238 | static void |
14a00470 | 239 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 240 | { |
14a00470 YQ |
241 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
242 | ||
243 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
244 | } |
245 | ||
5a04c4cf PA |
246 | /* QUEUE_iterate callback helper for in_queued_stop_replies. */ |
247 | ||
248 | static int | |
249 | in_queued_stop_replies_ptid (QUEUE (notif_event_p) *q, | |
250 | QUEUE_ITER (notif_event_p) *iter, | |
251 | struct notif_event *event, | |
252 | void *data) | |
253 | { | |
254 | ptid_t filter_ptid = *(ptid_t *) data; | |
255 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; | |
256 | ||
257 | if (ptid_match (vstop_event->ptid, filter_ptid)) | |
258 | return 0; | |
259 | ||
260 | /* Don't resume fork children that GDB does not know about yet. */ | |
261 | if ((vstop_event->status.kind == TARGET_WAITKIND_FORKED | |
262 | || vstop_event->status.kind == TARGET_WAITKIND_VFORKED) | |
263 | && ptid_match (vstop_event->status.value.related_pid, filter_ptid)) | |
264 | return 0; | |
265 | ||
266 | return 1; | |
267 | } | |
268 | ||
269 | /* See server.h. */ | |
270 | ||
271 | int | |
272 | in_queued_stop_replies (ptid_t ptid) | |
273 | { | |
274 | return !QUEUE_iterate (notif_event_p, notif_stop.queue, | |
275 | in_queued_stop_replies_ptid, &ptid); | |
276 | } | |
277 | ||
14a00470 YQ |
278 | struct notif_server notif_stop = |
279 | { | |
280 | "vStopped", "Stop", NULL, vstop_notif_reply, | |
281 | }; | |
282 | ||
2d717e4f DJ |
283 | static int |
284 | target_running (void) | |
285 | { | |
649ebbca | 286 | return get_first_thread () != NULL; |
2d717e4f DJ |
287 | } |
288 | ||
2090129c | 289 | /* See common/common-inferior.h. */ |
ccd213ac | 290 | |
2090129c SDJ |
291 | const char * |
292 | get_exec_wrapper () | |
293 | { | |
294 | return !wrapper_argv.empty () ? wrapper_argv.c_str () : NULL; | |
295 | } | |
eb97750b | 296 | |
2090129c | 297 | /* See common/common-inferior.h. */ |
eb97750b | 298 | |
2090129c SDJ |
299 | char * |
300 | get_exec_file (int err) | |
301 | { | |
25e3c82c | 302 | if (err && program_path.get () == NULL) |
2090129c | 303 | error (_("No executable file specified.")); |
ccd213ac | 304 | |
25e3c82c | 305 | return program_path.get (); |
2090129c | 306 | } |
5b1c542e | 307 | |
2090129c | 308 | /* See server.h. */ |
d20a8ad9 | 309 | |
9a6c7d9c | 310 | gdb_environ * |
2090129c SDJ |
311 | get_environ () |
312 | { | |
9a6c7d9c | 313 | return &our_environ; |
c906108c SS |
314 | } |
315 | ||
45b7b345 | 316 | static int |
5b1c542e | 317 | attach_inferior (int pid) |
45b7b345 DJ |
318 | { |
319 | /* myattach should return -1 if attaching is unsupported, | |
320 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 321 | |
45b7b345 DJ |
322 | if (myattach (pid) != 0) |
323 | return -1; | |
324 | ||
6910d122 | 325 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 326 | fflush (stderr); |
6910d122 | 327 | |
a9fa9f7d DJ |
328 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
329 | attach function, so that it can be the main thread instead of | |
330 | whichever we were told to attach to. */ | |
331 | signal_pid = pid; | |
332 | ||
bd99dc85 PA |
333 | if (!non_stop) |
334 | { | |
95954743 | 335 | last_ptid = mywait (pid_to_ptid (pid), &last_status, 0, 0); |
bd99dc85 PA |
336 | |
337 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
338 | process using the "attach" command, but this is different; it's | |
339 | just using "target remote". Pretend it's just starting up. */ | |
340 | if (last_status.kind == TARGET_WAITKIND_STOPPED | |
a493e3e2 PA |
341 | && last_status.value.sig == GDB_SIGNAL_STOP) |
342 | last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 | 343 | |
0bfdf32f GB |
344 | current_thread->last_resume_kind = resume_stop; |
345 | current_thread->last_status = last_status; | |
bd99dc85 | 346 | } |
9db87ebd | 347 | |
45b7b345 DJ |
348 | return 0; |
349 | } | |
350 | ||
c906108c | 351 | extern int remote_debug; |
ce3a066d | 352 | |
0876f84a DJ |
353 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
354 | or -1 otherwise. */ | |
355 | ||
356 | static int | |
d08aafef | 357 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 358 | { |
d08aafef PA |
359 | /* After the read marker and annex, qXfer looks like a |
360 | traditional 'm' packet. */ | |
361 | decode_m_packet (buf, ofs, len); | |
362 | ||
363 | return 0; | |
364 | } | |
365 | ||
366 | static int | |
367 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
368 | { | |
369 | /* Extract and NUL-terminate the object. */ | |
370 | *object = buf; | |
371 | while (*buf && *buf != ':') | |
372 | buf++; | |
373 | if (*buf == '\0') | |
374 | return -1; | |
375 | *buf++ = 0; | |
376 | ||
377 | /* Extract and NUL-terminate the read/write action. */ | |
378 | *rw = buf; | |
379 | while (*buf && *buf != ':') | |
380 | buf++; | |
381 | if (*buf == '\0') | |
382 | return -1; | |
383 | *buf++ = 0; | |
384 | ||
0876f84a DJ |
385 | /* Extract and NUL-terminate the annex. */ |
386 | *annex = buf; | |
387 | while (*buf && *buf != ':') | |
388 | buf++; | |
389 | if (*buf == '\0') | |
390 | return -1; | |
391 | *buf++ = 0; | |
392 | ||
d08aafef | 393 | *offset = buf; |
0876f84a DJ |
394 | return 0; |
395 | } | |
396 | ||
397 | /* Write the response to a successful qXfer read. Returns the | |
398 | length of the (binary) data stored in BUF, corresponding | |
399 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
400 | the first character of the response. */ | |
401 | static int | |
f98cd059 | 402 | write_qxfer_response (char *buf, const gdb_byte *data, int len, int is_more) |
0876f84a DJ |
403 | { |
404 | int out_len; | |
405 | ||
406 | if (is_more) | |
407 | buf[0] = 'm'; | |
408 | else | |
409 | buf[0] = 'l'; | |
410 | ||
124e13d9 SM |
411 | return remote_escape_output (data, len, 1, (unsigned char *) buf + 1, |
412 | &out_len, PBUFSIZ - 2) + 1; | |
0876f84a DJ |
413 | } |
414 | ||
f4abbc16 | 415 | /* Handle btrace enabling in BTS format. */ |
9accd112 | 416 | |
9ee23a85 | 417 | static void |
f4abbc16 | 418 | handle_btrace_enable_bts (struct thread_info *thread) |
9accd112 MM |
419 | { |
420 | if (thread->btrace != NULL) | |
9ee23a85 | 421 | error (_("Btrace already enabled.")); |
9accd112 | 422 | |
f4abbc16 | 423 | current_btrace_conf.format = BTRACE_FORMAT_BTS; |
9c80ecd6 | 424 | thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf); |
9accd112 MM |
425 | } |
426 | ||
bc504a31 | 427 | /* Handle btrace enabling in Intel Processor Trace format. */ |
b20a6524 | 428 | |
9ee23a85 | 429 | static void |
b20a6524 MM |
430 | handle_btrace_enable_pt (struct thread_info *thread) |
431 | { | |
432 | if (thread->btrace != NULL) | |
9ee23a85 | 433 | error (_("Btrace already enabled.")); |
b20a6524 MM |
434 | |
435 | current_btrace_conf.format = BTRACE_FORMAT_PT; | |
9c80ecd6 | 436 | thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf); |
b20a6524 MM |
437 | } |
438 | ||
9accd112 MM |
439 | /* Handle btrace disabling. */ |
440 | ||
9ee23a85 | 441 | static void |
9accd112 MM |
442 | handle_btrace_disable (struct thread_info *thread) |
443 | { | |
444 | ||
445 | if (thread->btrace == NULL) | |
9ee23a85 | 446 | error (_("Branch tracing not enabled.")); |
9accd112 MM |
447 | |
448 | if (target_disable_btrace (thread->btrace) != 0) | |
9ee23a85 | 449 | error (_("Could not disable branch tracing.")); |
9accd112 MM |
450 | |
451 | thread->btrace = NULL; | |
9accd112 MM |
452 | } |
453 | ||
454 | /* Handle the "Qbtrace" packet. */ | |
455 | ||
456 | static int | |
457 | handle_btrace_general_set (char *own_buf) | |
458 | { | |
459 | struct thread_info *thread; | |
9accd112 MM |
460 | char *op; |
461 | ||
61012eef | 462 | if (!startswith (own_buf, "Qbtrace:")) |
9accd112 MM |
463 | return 0; |
464 | ||
465 | op = own_buf + strlen ("Qbtrace:"); | |
466 | ||
9accd112 MM |
467 | if (ptid_equal (general_thread, null_ptid) |
468 | || ptid_equal (general_thread, minus_one_ptid)) | |
469 | { | |
470 | strcpy (own_buf, "E.Must select a single thread."); | |
471 | return -1; | |
472 | } | |
473 | ||
474 | thread = find_thread_ptid (general_thread); | |
475 | if (thread == NULL) | |
476 | { | |
477 | strcpy (own_buf, "E.No such thread."); | |
478 | return -1; | |
479 | } | |
480 | ||
9ee23a85 MM |
481 | TRY |
482 | { | |
483 | if (strcmp (op, "bts") == 0) | |
484 | handle_btrace_enable_bts (thread); | |
485 | else if (strcmp (op, "pt") == 0) | |
486 | handle_btrace_enable_pt (thread); | |
487 | else if (strcmp (op, "off") == 0) | |
488 | handle_btrace_disable (thread); | |
489 | else | |
490 | error (_("Bad Qbtrace operation. Use bts, pt, or off.")); | |
491 | ||
492 | write_ok (own_buf); | |
493 | } | |
494 | CATCH (exception, RETURN_MASK_ERROR) | |
495 | { | |
496 | sprintf (own_buf, "E.%s", exception.message); | |
497 | } | |
498 | END_CATCH | |
9accd112 MM |
499 | |
500 | return 1; | |
501 | } | |
502 | ||
d33501a5 MM |
503 | /* Handle the "Qbtrace-conf" packet. */ |
504 | ||
505 | static int | |
506 | handle_btrace_conf_general_set (char *own_buf) | |
507 | { | |
508 | struct thread_info *thread; | |
509 | char *op; | |
510 | ||
61012eef | 511 | if (!startswith (own_buf, "Qbtrace-conf:")) |
d33501a5 MM |
512 | return 0; |
513 | ||
514 | op = own_buf + strlen ("Qbtrace-conf:"); | |
515 | ||
516 | if (ptid_equal (general_thread, null_ptid) | |
517 | || ptid_equal (general_thread, minus_one_ptid)) | |
518 | { | |
519 | strcpy (own_buf, "E.Must select a single thread."); | |
520 | return -1; | |
521 | } | |
522 | ||
523 | thread = find_thread_ptid (general_thread); | |
524 | if (thread == NULL) | |
525 | { | |
526 | strcpy (own_buf, "E.No such thread."); | |
527 | return -1; | |
528 | } | |
529 | ||
61012eef | 530 | if (startswith (op, "bts:size=")) |
d33501a5 MM |
531 | { |
532 | unsigned long size; | |
533 | char *endp = NULL; | |
534 | ||
535 | errno = 0; | |
536 | size = strtoul (op + strlen ("bts:size="), &endp, 16); | |
537 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
538 | { | |
539 | strcpy (own_buf, "E.Bad size value."); | |
540 | return -1; | |
541 | } | |
542 | ||
543 | current_btrace_conf.bts.size = (unsigned int) size; | |
544 | } | |
b20a6524 MM |
545 | else if (strncmp (op, "pt:size=", strlen ("pt:size=")) == 0) |
546 | { | |
547 | unsigned long size; | |
548 | char *endp = NULL; | |
549 | ||
550 | errno = 0; | |
551 | size = strtoul (op + strlen ("pt:size="), &endp, 16); | |
552 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
553 | { | |
554 | strcpy (own_buf, "E.Bad size value."); | |
555 | return -1; | |
556 | } | |
557 | ||
558 | current_btrace_conf.pt.size = (unsigned int) size; | |
559 | } | |
d33501a5 MM |
560 | else |
561 | { | |
562 | strcpy (own_buf, "E.Bad Qbtrace configuration option."); | |
563 | return -1; | |
564 | } | |
565 | ||
566 | write_ok (own_buf); | |
567 | return 1; | |
568 | } | |
569 | ||
89be2091 | 570 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
571 | |
572 | static void | |
89be2091 DJ |
573 | handle_general_set (char *own_buf) |
574 | { | |
61012eef | 575 | if (startswith (own_buf, "QPassSignals:")) |
89be2091 | 576 | { |
a493e3e2 | 577 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
578 | const char *p = own_buf + strlen ("QPassSignals:"); |
579 | CORE_ADDR cursig; | |
580 | ||
581 | p = decode_address_to_semicolon (&cursig, p); | |
582 | for (i = 0; i < numsigs; i++) | |
583 | { | |
584 | if (i == cursig) | |
585 | { | |
586 | pass_signals[i] = 1; | |
587 | if (*p == '\0') | |
588 | /* Keep looping, to clear the remaining signals. */ | |
589 | cursig = -1; | |
590 | else | |
591 | p = decode_address_to_semicolon (&cursig, p); | |
592 | } | |
593 | else | |
594 | pass_signals[i] = 0; | |
595 | } | |
596 | strcpy (own_buf, "OK"); | |
597 | return; | |
598 | } | |
599 | ||
61012eef | 600 | if (startswith (own_buf, "QProgramSignals:")) |
9b224c5e | 601 | { |
a493e3e2 | 602 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
603 | const char *p = own_buf + strlen ("QProgramSignals:"); |
604 | CORE_ADDR cursig; | |
605 | ||
606 | program_signals_p = 1; | |
607 | ||
608 | p = decode_address_to_semicolon (&cursig, p); | |
609 | for (i = 0; i < numsigs; i++) | |
610 | { | |
611 | if (i == cursig) | |
612 | { | |
613 | program_signals[i] = 1; | |
614 | if (*p == '\0') | |
615 | /* Keep looping, to clear the remaining signals. */ | |
616 | cursig = -1; | |
617 | else | |
618 | p = decode_address_to_semicolon (&cursig, p); | |
619 | } | |
620 | else | |
621 | program_signals[i] = 0; | |
622 | } | |
623 | strcpy (own_buf, "OK"); | |
624 | return; | |
625 | } | |
626 | ||
82075af2 JS |
627 | if (startswith (own_buf, "QCatchSyscalls:")) |
628 | { | |
629 | const char *p = own_buf + sizeof ("QCatchSyscalls:") - 1; | |
630 | int enabled = -1; | |
631 | CORE_ADDR sysno; | |
632 | struct process_info *process; | |
633 | ||
634 | if (!target_running () || !target_supports_catch_syscall ()) | |
635 | { | |
636 | write_enn (own_buf); | |
637 | return; | |
638 | } | |
639 | ||
640 | if (strcmp (p, "0") == 0) | |
641 | enabled = 0; | |
642 | else if (p[0] == '1' && (p[1] == ';' || p[1] == '\0')) | |
643 | enabled = 1; | |
644 | else | |
645 | { | |
646 | fprintf (stderr, "Unknown catch-syscalls mode requested: %s\n", | |
647 | own_buf); | |
648 | write_enn (own_buf); | |
649 | return; | |
650 | } | |
651 | ||
652 | process = current_process (); | |
f27866ba | 653 | process->syscalls_to_catch.clear (); |
82075af2 JS |
654 | |
655 | if (enabled) | |
656 | { | |
657 | p += 1; | |
658 | if (*p == ';') | |
659 | { | |
660 | p += 1; | |
661 | while (*p != '\0') | |
662 | { | |
663 | p = decode_address_to_semicolon (&sysno, p); | |
f27866ba | 664 | process->syscalls_to_catch.push_back (sysno); |
82075af2 JS |
665 | } |
666 | } | |
667 | else | |
f27866ba | 668 | process->syscalls_to_catch.push_back (ANY_SYSCALL); |
82075af2 JS |
669 | } |
670 | ||
671 | write_ok (own_buf); | |
672 | return; | |
673 | } | |
674 | ||
0a2dde4a SDJ |
675 | if (strcmp (own_buf, "QEnvironmentReset") == 0) |
676 | { | |
677 | our_environ = gdb_environ::from_host_environ (); | |
678 | ||
679 | write_ok (own_buf); | |
680 | return; | |
681 | } | |
682 | ||
683 | if (startswith (own_buf, "QEnvironmentHexEncoded:")) | |
684 | { | |
685 | const char *p = own_buf + sizeof ("QEnvironmentHexEncoded:") - 1; | |
686 | /* The final form of the environment variable. FINAL_VAR will | |
687 | hold the 'VAR=VALUE' format. */ | |
688 | std::string final_var = hex2str (p); | |
689 | std::string var_name, var_value; | |
690 | ||
691 | if (remote_debug) | |
692 | { | |
693 | debug_printf (_("[QEnvironmentHexEncoded received '%s']\n"), p); | |
694 | debug_printf (_("[Environment variable to be set: '%s']\n"), | |
695 | final_var.c_str ()); | |
696 | debug_flush (); | |
697 | } | |
698 | ||
699 | size_t pos = final_var.find ('='); | |
700 | if (pos == std::string::npos) | |
701 | { | |
702 | warning (_("Unexpected format for environment variable: '%s'"), | |
703 | final_var.c_str ()); | |
704 | write_enn (own_buf); | |
705 | return; | |
706 | } | |
707 | ||
708 | var_name = final_var.substr (0, pos); | |
709 | var_value = final_var.substr (pos + 1, std::string::npos); | |
710 | ||
711 | our_environ.set (var_name.c_str (), var_value.c_str ()); | |
712 | ||
713 | write_ok (own_buf); | |
714 | return; | |
715 | } | |
716 | ||
717 | if (startswith (own_buf, "QEnvironmentUnset:")) | |
718 | { | |
719 | const char *p = own_buf + sizeof ("QEnvironmentUnset:") - 1; | |
720 | std::string varname = hex2str (p); | |
721 | ||
722 | if (remote_debug) | |
723 | { | |
724 | debug_printf (_("[QEnvironmentUnset received '%s']\n"), p); | |
725 | debug_printf (_("[Environment variable to be unset: '%s']\n"), | |
726 | varname.c_str ()); | |
727 | debug_flush (); | |
728 | } | |
729 | ||
730 | our_environ.unset (varname.c_str ()); | |
731 | ||
732 | write_ok (own_buf); | |
733 | return; | |
734 | } | |
735 | ||
a6f3e723 SL |
736 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
737 | { | |
738 | if (remote_debug) | |
739 | { | |
4eefa7bc PA |
740 | debug_printf ("[noack mode enabled]\n"); |
741 | debug_flush (); | |
a6f3e723 SL |
742 | } |
743 | ||
744 | noack_mode = 1; | |
745 | write_ok (own_buf); | |
746 | return; | |
747 | } | |
748 | ||
61012eef | 749 | if (startswith (own_buf, "QNonStop:")) |
bd99dc85 PA |
750 | { |
751 | char *mode = own_buf + 9; | |
752 | int req = -1; | |
b2333d22 | 753 | const char *req_str; |
bd99dc85 PA |
754 | |
755 | if (strcmp (mode, "0") == 0) | |
756 | req = 0; | |
757 | else if (strcmp (mode, "1") == 0) | |
758 | req = 1; | |
759 | else | |
760 | { | |
761 | /* We don't know what this mode is, so complain to | |
762 | GDB. */ | |
763 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
764 | own_buf); | |
765 | write_enn (own_buf); | |
766 | return; | |
767 | } | |
768 | ||
769 | req_str = req ? "non-stop" : "all-stop"; | |
770 | if (start_non_stop (req) != 0) | |
771 | { | |
772 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
773 | write_enn (own_buf); | |
774 | return; | |
775 | } | |
776 | ||
777 | non_stop = req; | |
778 | ||
779 | if (remote_debug) | |
4eefa7bc | 780 | debug_printf ("[%s mode enabled]\n", req_str); |
bd99dc85 PA |
781 | |
782 | write_ok (own_buf); | |
783 | return; | |
784 | } | |
785 | ||
61012eef | 786 | if (startswith (own_buf, "QDisableRandomization:")) |
03583c20 UW |
787 | { |
788 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
789 | ULONGEST setting; | |
790 | ||
791 | unpack_varlen_hex (packet, &setting); | |
792 | disable_randomization = setting; | |
793 | ||
794 | if (remote_debug) | |
795 | { | |
4eefa7bc PA |
796 | debug_printf (disable_randomization |
797 | ? "[address space randomization disabled]\n" | |
798 | : "[address space randomization enabled]\n"); | |
03583c20 UW |
799 | } |
800 | ||
801 | write_ok (own_buf); | |
802 | return; | |
803 | } | |
804 | ||
219f2f23 PA |
805 | if (target_supports_tracepoints () |
806 | && handle_tracepoint_general_set (own_buf)) | |
807 | return; | |
808 | ||
61012eef | 809 | if (startswith (own_buf, "QAgent:")) |
d1feda86 YQ |
810 | { |
811 | char *mode = own_buf + strlen ("QAgent:"); | |
812 | int req = 0; | |
813 | ||
814 | if (strcmp (mode, "0") == 0) | |
815 | req = 0; | |
816 | else if (strcmp (mode, "1") == 0) | |
817 | req = 1; | |
818 | else | |
819 | { | |
820 | /* We don't know what this value is, so complain to GDB. */ | |
821 | sprintf (own_buf, "E.Unknown QAgent value"); | |
822 | return; | |
823 | } | |
824 | ||
825 | /* Update the flag. */ | |
826 | use_agent = req; | |
827 | if (remote_debug) | |
4eefa7bc | 828 | debug_printf ("[%s agent]\n", req ? "Enable" : "Disable"); |
d1feda86 YQ |
829 | write_ok (own_buf); |
830 | return; | |
831 | } | |
832 | ||
9accd112 MM |
833 | if (handle_btrace_general_set (own_buf)) |
834 | return; | |
835 | ||
d33501a5 MM |
836 | if (handle_btrace_conf_general_set (own_buf)) |
837 | return; | |
838 | ||
65706a29 PA |
839 | if (startswith (own_buf, "QThreadEvents:")) |
840 | { | |
841 | char *mode = own_buf + strlen ("QThreadEvents:"); | |
842 | enum tribool req = TRIBOOL_UNKNOWN; | |
843 | ||
844 | if (strcmp (mode, "0") == 0) | |
845 | req = TRIBOOL_FALSE; | |
846 | else if (strcmp (mode, "1") == 0) | |
847 | req = TRIBOOL_TRUE; | |
848 | else | |
849 | { | |
850 | char *mode_copy = xstrdup (mode); | |
851 | ||
852 | /* We don't know what this mode is, so complain to GDB. */ | |
853 | sprintf (own_buf, "E.Unknown thread-events mode requested: %s\n", | |
854 | mode_copy); | |
855 | xfree (mode_copy); | |
856 | return; | |
857 | } | |
858 | ||
859 | report_thread_events = (req == TRIBOOL_TRUE); | |
860 | ||
861 | if (remote_debug) | |
862 | { | |
863 | const char *req_str = report_thread_events ? "enabled" : "disabled"; | |
864 | ||
4eefa7bc | 865 | debug_printf ("[thread events are now %s]\n", req_str); |
65706a29 PA |
866 | } |
867 | ||
868 | write_ok (own_buf); | |
869 | return; | |
870 | } | |
871 | ||
aefd8b33 SDJ |
872 | if (startswith (own_buf, "QStartupWithShell:")) |
873 | { | |
874 | const char *value = own_buf + strlen ("QStartupWithShell:"); | |
875 | ||
876 | if (strcmp (value, "1") == 0) | |
877 | startup_with_shell = true; | |
878 | else if (strcmp (value, "0") == 0) | |
879 | startup_with_shell = false; | |
880 | else | |
881 | { | |
882 | /* Unknown value. */ | |
883 | fprintf (stderr, "Unknown value to startup-with-shell: %s\n", | |
884 | own_buf); | |
885 | write_enn (own_buf); | |
886 | return; | |
887 | } | |
888 | ||
889 | if (remote_debug) | |
890 | debug_printf (_("[Inferior will %s started with shell]"), | |
891 | startup_with_shell ? "be" : "not be"); | |
892 | ||
893 | write_ok (own_buf); | |
894 | return; | |
895 | } | |
896 | ||
bc3b087d SDJ |
897 | if (startswith (own_buf, "QSetWorkingDir:")) |
898 | { | |
899 | const char *p = own_buf + strlen ("QSetWorkingDir:"); | |
900 | ||
901 | if (*p != '\0') | |
902 | { | |
903 | std::string path = hex2str (p); | |
904 | ||
905 | set_inferior_cwd (path.c_str ()); | |
906 | ||
907 | if (remote_debug) | |
908 | debug_printf (_("[Set the inferior's current directory to %s]\n"), | |
909 | path.c_str ()); | |
910 | } | |
911 | else | |
912 | { | |
913 | /* An empty argument means that we should clear out any | |
914 | previously set cwd for the inferior. */ | |
915 | set_inferior_cwd (NULL); | |
916 | ||
917 | if (remote_debug) | |
918 | debug_printf (_("\ | |
919 | [Unset the inferior's current directory; will use gdbserver's cwd]\n")); | |
920 | } | |
921 | write_ok (own_buf); | |
922 | ||
923 | return; | |
924 | } | |
925 | ||
89be2091 DJ |
926 | /* Otherwise we didn't know what packet it was. Say we didn't |
927 | understand it. */ | |
928 | own_buf[0] = 0; | |
929 | } | |
930 | ||
23181151 | 931 | static const char * |
fb1e4ffc | 932 | get_features_xml (const char *annex) |
23181151 | 933 | { |
3aee8918 PA |
934 | const struct target_desc *desc = current_target_desc (); |
935 | ||
936 | /* `desc->xmltarget' defines what to return when looking for the | |
937 | "target.xml" file. Its contents can either be verbatim XML code | |
938 | (prefixed with a '@') or else the name of the actual XML file to | |
939 | be used in place of "target.xml". | |
fb1e4ffc | 940 | |
9b4b61c8 UW |
941 | This variable is set up from the auto-generated |
942 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 943 | |
0abe8a89 | 944 | if (strcmp (annex, "target.xml") == 0) |
23181151 | 945 | { |
0abe8a89 YQ |
946 | const char *ret = tdesc_get_features_xml ((target_desc*) desc); |
947 | ||
948 | if (*ret == '@') | |
949 | return ret + 1; | |
23181151 | 950 | else |
0abe8a89 | 951 | annex = ret; |
23181151 DJ |
952 | } |
953 | ||
9b4b61c8 UW |
954 | #ifdef USE_XML |
955 | { | |
956 | extern const char *const xml_builtin[][2]; | |
957 | int i; | |
958 | ||
959 | /* Look for the annex. */ | |
960 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
961 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
962 | break; | |
963 | ||
964 | if (xml_builtin[i][0] != NULL) | |
965 | return xml_builtin[i][1]; | |
966 | } | |
967 | #endif | |
968 | ||
969 | return NULL; | |
23181151 DJ |
970 | } |
971 | ||
5b3da067 | 972 | static void |
c74d0ad8 DJ |
973 | monitor_show_help (void) |
974 | { | |
975 | monitor_output ("The following monitor commands are supported:\n"); | |
976 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 977 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
978 | monitor_output (" set debug-hw-points <0|1>\n"); |
979 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
980 | monitor_output (" set remote-debug <0|1>\n"); |
981 | monitor_output (" Enable remote protocol debugging messages\n"); | |
87ce2a04 DE |
982 | monitor_output (" set debug-format option1[,option2,...]\n"); |
983 | monitor_output (" Add additional information to debugging messages\n"); | |
984 | monitor_output (" Options: all, none"); | |
87ce2a04 | 985 | monitor_output (", timestamp"); |
87ce2a04 | 986 | monitor_output ("\n"); |
ecd7ecbc DJ |
987 | monitor_output (" exit\n"); |
988 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
989 | } |
990 | ||
764880b7 PA |
991 | /* Read trace frame or inferior memory. Returns the number of bytes |
992 | actually read, zero when no further transfer is possible, and -1 on | |
993 | error. Return of a positive value smaller than LEN does not | |
994 | indicate there's no more to be read, only the end of the transfer. | |
995 | E.g., when GDB reads memory from a traceframe, a first request may | |
996 | be served from a memory block that does not cover the whole request | |
997 | length. A following request gets the rest served from either | |
998 | another block (of the same traceframe) or from the read-only | |
999 | regions. */ | |
219f2f23 PA |
1000 | |
1001 | static int | |
90d74c30 | 1002 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 1003 | { |
764880b7 | 1004 | int res; |
90d74c30 | 1005 | |
219f2f23 PA |
1006 | if (current_traceframe >= 0) |
1007 | { | |
1008 | ULONGEST nbytes; | |
1009 | ULONGEST length = len; | |
1010 | ||
1011 | if (traceframe_read_mem (current_traceframe, | |
1012 | memaddr, myaddr, len, &nbytes)) | |
9a13b2fa | 1013 | return -1; |
219f2f23 | 1014 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
1015 | if (nbytes > 0) |
1016 | return nbytes; | |
219f2f23 | 1017 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 1018 | return -1; |
219f2f23 PA |
1019 | /* Otherwise we have a valid readonly case, fall through. */ |
1020 | /* (assume no half-trace half-real blocks for now) */ | |
1021 | } | |
1022 | ||
764880b7 PA |
1023 | res = prepare_to_access_memory (); |
1024 | if (res == 0) | |
90d74c30 | 1025 | { |
f557a88a | 1026 | if (set_desired_thread ()) |
f0db101d PA |
1027 | res = read_inferior_memory (memaddr, myaddr, len); |
1028 | else | |
1029 | res = 1; | |
0146f85b | 1030 | done_accessing_memory (); |
90d74c30 | 1031 | |
764880b7 PA |
1032 | return res == 0 ? len : -1; |
1033 | } | |
1034 | else | |
1035 | return -1; | |
219f2f23 PA |
1036 | } |
1037 | ||
1038 | /* Write trace frame or inferior memory. Actually, writing to trace | |
1039 | frames is forbidden. */ | |
1040 | ||
1041 | static int | |
90d74c30 | 1042 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 PA |
1043 | { |
1044 | if (current_traceframe >= 0) | |
1045 | return EIO; | |
1046 | else | |
90d74c30 PA |
1047 | { |
1048 | int ret; | |
1049 | ||
1050 | ret = prepare_to_access_memory (); | |
1051 | if (ret == 0) | |
1052 | { | |
f557a88a | 1053 | if (set_desired_thread ()) |
f0db101d PA |
1054 | ret = write_inferior_memory (memaddr, myaddr, len); |
1055 | else | |
1056 | ret = EIO; | |
0146f85b | 1057 | done_accessing_memory (); |
90d74c30 PA |
1058 | } |
1059 | return ret; | |
1060 | } | |
219f2f23 PA |
1061 | } |
1062 | ||
08388c79 DE |
1063 | /* Subroutine of handle_search_memory to simplify it. */ |
1064 | ||
1065 | static int | |
1066 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
1067 | gdb_byte *pattern, unsigned pattern_len, | |
1068 | gdb_byte *search_buf, | |
1069 | unsigned chunk_size, unsigned search_buf_size, | |
1070 | CORE_ADDR *found_addrp) | |
1071 | { | |
1072 | /* Prime the search buffer. */ | |
1073 | ||
764880b7 PA |
1074 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
1075 | != search_buf_size) | |
08388c79 | 1076 | { |
b3dc46ff AB |
1077 | warning ("Unable to access %ld bytes of target " |
1078 | "memory at 0x%lx, halting search.", | |
1079 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
1080 | return -1; |
1081 | } | |
1082 | ||
1083 | /* Perform the search. | |
1084 | ||
1085 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
1086 | When we've scanned N bytes we copy the trailing bytes to the start and | |
1087 | read in another N bytes. */ | |
1088 | ||
1089 | while (search_space_len >= pattern_len) | |
1090 | { | |
1091 | gdb_byte *found_ptr; | |
1092 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
1093 | ? search_space_len | |
1094 | : search_buf_size); | |
1095 | ||
d6f85c84 SM |
1096 | found_ptr = (gdb_byte *) memmem (search_buf, nr_search_bytes, pattern, |
1097 | pattern_len); | |
08388c79 DE |
1098 | |
1099 | if (found_ptr != NULL) | |
1100 | { | |
1101 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
1102 | *found_addrp = found_addr; | |
1103 | return 1; | |
1104 | } | |
1105 | ||
1106 | /* Not found in this chunk, skip to next chunk. */ | |
1107 | ||
1108 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
1109 | if (search_space_len >= chunk_size) | |
1110 | search_space_len -= chunk_size; | |
1111 | else | |
1112 | search_space_len = 0; | |
1113 | ||
1114 | if (search_space_len >= pattern_len) | |
1115 | { | |
1116 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 1117 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
1118 | int nr_to_read; |
1119 | ||
1120 | /* Copy the trailing part of the previous iteration to the front | |
1121 | of the buffer for the next iteration. */ | |
1122 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
1123 | ||
1124 | nr_to_read = (search_space_len - keep_len < chunk_size | |
1125 | ? search_space_len - keep_len | |
1126 | : chunk_size); | |
1127 | ||
90d74c30 | 1128 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 1129 | nr_to_read) != search_buf_size) |
08388c79 | 1130 | { |
b3dc46ff | 1131 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 1132 | "at 0x%lx, halting search.", |
b3dc46ff | 1133 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
1134 | return -1; |
1135 | } | |
1136 | ||
1137 | start_addr += chunk_size; | |
1138 | } | |
1139 | } | |
1140 | ||
1141 | /* Not found. */ | |
1142 | ||
1143 | return 0; | |
1144 | } | |
1145 | ||
1146 | /* Handle qSearch:memory packets. */ | |
1147 | ||
1148 | static void | |
1149 | handle_search_memory (char *own_buf, int packet_len) | |
1150 | { | |
1151 | CORE_ADDR start_addr; | |
1152 | CORE_ADDR search_space_len; | |
1153 | gdb_byte *pattern; | |
1154 | unsigned int pattern_len; | |
1155 | /* NOTE: also defined in find.c testcase. */ | |
1156 | #define SEARCH_CHUNK_SIZE 16000 | |
1157 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
1158 | /* Buffer to hold memory contents for searching. */ | |
1159 | gdb_byte *search_buf; | |
1160 | unsigned search_buf_size; | |
1161 | int found; | |
1162 | CORE_ADDR found_addr; | |
1163 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
1164 | ||
224c3ddb | 1165 | pattern = (gdb_byte *) malloc (packet_len); |
08388c79 DE |
1166 | if (pattern == NULL) |
1167 | { | |
5e1471f5 | 1168 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1169 | strcpy (own_buf, "E00"); |
1170 | return; | |
1171 | } | |
1172 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
1173 | packet_len - cmd_name_len, | |
1174 | &start_addr, &search_space_len, | |
1175 | pattern, &pattern_len) < 0) | |
1176 | { | |
1177 | free (pattern); | |
5e1471f5 | 1178 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
1179 | strcpy (own_buf, "E00"); |
1180 | return; | |
1181 | } | |
1182 | ||
1183 | search_buf_size = chunk_size + pattern_len - 1; | |
1184 | ||
1185 | /* No point in trying to allocate a buffer larger than the search space. */ | |
1186 | if (search_space_len < search_buf_size) | |
1187 | search_buf_size = search_space_len; | |
1188 | ||
224c3ddb | 1189 | search_buf = (gdb_byte *) malloc (search_buf_size); |
08388c79 DE |
1190 | if (search_buf == NULL) |
1191 | { | |
1192 | free (pattern); | |
5e1471f5 | 1193 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1194 | strcpy (own_buf, "E00"); |
1195 | return; | |
1196 | } | |
1197 | ||
1198 | found = handle_search_memory_1 (start_addr, search_space_len, | |
1199 | pattern, pattern_len, | |
1200 | search_buf, chunk_size, search_buf_size, | |
1201 | &found_addr); | |
1202 | ||
1203 | if (found > 0) | |
1204 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
1205 | else if (found == 0) | |
1206 | strcpy (own_buf, "0"); | |
1207 | else | |
1208 | strcpy (own_buf, "E00"); | |
1209 | ||
1210 | free (search_buf); | |
1211 | free (pattern); | |
1212 | } | |
1213 | ||
e8ca139e SM |
1214 | /* Handle the "D" packet. */ |
1215 | ||
1216 | static void | |
1217 | handle_detach (char *own_buf) | |
1218 | { | |
1219 | require_running_or_return (own_buf); | |
1220 | ||
1221 | int pid; | |
1222 | ||
1223 | if (multi_process) | |
1224 | { | |
1225 | /* skip 'D;' */ | |
1226 | pid = strtol (&own_buf[2], NULL, 16); | |
1227 | } | |
1228 | else | |
1229 | pid = ptid_get_pid (current_ptid); | |
1230 | ||
1231 | if ((tracing && disconnected_tracing) || any_persistent_commands ()) | |
1232 | { | |
1233 | struct process_info *process = find_process_pid (pid); | |
1234 | ||
1235 | if (process == NULL) | |
1236 | { | |
1237 | write_enn (own_buf); | |
1238 | return; | |
1239 | } | |
1240 | ||
1241 | if (tracing && disconnected_tracing) | |
1242 | fprintf (stderr, | |
1243 | "Disconnected tracing in effect, " | |
1244 | "leaving gdbserver attached to the process\n"); | |
1245 | ||
1246 | if (any_persistent_commands ()) | |
1247 | fprintf (stderr, | |
1248 | "Persistent commands are present, " | |
1249 | "leaving gdbserver attached to the process\n"); | |
1250 | ||
1251 | /* Make sure we're in non-stop/async mode, so we we can both | |
1252 | wait for an async socket accept, and handle async target | |
1253 | events simultaneously. There's also no point either in | |
1254 | having the target stop all threads, when we're going to | |
1255 | pass signals down without informing GDB. */ | |
1256 | if (!non_stop) | |
1257 | { | |
1258 | if (debug_threads) | |
1259 | debug_printf ("Forcing non-stop mode\n"); | |
1260 | ||
1261 | non_stop = 1; | |
1262 | start_non_stop (1); | |
1263 | } | |
1264 | ||
1265 | process->gdb_detached = 1; | |
1266 | ||
1267 | /* Detaching implicitly resumes all threads. */ | |
1268 | target_continue_no_signal (minus_one_ptid); | |
1269 | ||
1270 | write_ok (own_buf); | |
1271 | return; | |
1272 | } | |
1273 | ||
1274 | fprintf (stderr, "Detaching from process %d\n", pid); | |
1275 | stop_tracing (); | |
1276 | if (detach_inferior (pid) != 0) | |
1277 | write_enn (own_buf); | |
1278 | else | |
1279 | { | |
1280 | discard_queued_stop_replies (pid_to_ptid (pid)); | |
1281 | write_ok (own_buf); | |
1282 | ||
1283 | if (extended_protocol || target_running ()) | |
1284 | { | |
1285 | /* There is still at least one inferior remaining or | |
1286 | we are in extended mode, so don't terminate gdbserver, | |
1287 | and instead treat this like a normal program exit. */ | |
1288 | last_status.kind = TARGET_WAITKIND_EXITED; | |
1289 | last_status.value.integer = 0; | |
1290 | last_ptid = pid_to_ptid (pid); | |
1291 | ||
1292 | current_thread = NULL; | |
1293 | } | |
1294 | else | |
1295 | { | |
1296 | putpkt (own_buf); | |
1297 | remote_close (); | |
1298 | ||
1299 | /* If we are attached, then we can exit. Otherwise, we | |
1300 | need to hang around doing nothing, until the child is | |
1301 | gone. */ | |
1302 | join_inferior (pid); | |
1303 | exit (0); | |
1304 | } | |
1305 | } | |
1306 | } | |
1307 | ||
87ce2a04 DE |
1308 | /* Parse options to --debug-format= and "monitor set debug-format". |
1309 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
1310 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
1311 | This triggers calls to monitor_output. | |
1312 | The result is NULL if all options were parsed ok, otherwise an error | |
1313 | message which the caller must free. | |
1314 | ||
1315 | N.B. These commands affect all debug format settings, they are not | |
1316 | cumulative. If a format is not specified, it is turned off. | |
1317 | However, we don't go to extra trouble with things like | |
1318 | "monitor set debug-format all,none,timestamp". | |
1319 | Instead we just parse them one at a time, in order. | |
1320 | ||
1321 | The syntax for "monitor set debug" we support here is not identical | |
1322 | to gdb's "set debug foo on|off" because we also use this function to | |
1323 | parse "--debug-format=foo,bar". */ | |
1324 | ||
2cc05030 | 1325 | static std::string |
87ce2a04 DE |
1326 | parse_debug_format_options (const char *arg, int is_monitor) |
1327 | { | |
1328 | VEC (char_ptr) *options; | |
1329 | int ix; | |
1330 | char *option; | |
1331 | ||
1332 | /* First turn all debug format options off. */ | |
1333 | debug_timestamp = 0; | |
1334 | ||
1335 | /* First remove leading spaces, for "monitor set debug-format". */ | |
1336 | while (isspace (*arg)) | |
1337 | ++arg; | |
1338 | ||
1339 | options = delim_string_to_char_ptr_vec (arg, ','); | |
1340 | ||
1341 | for (ix = 0; VEC_iterate (char_ptr, options, ix, option); ++ix) | |
1342 | { | |
1343 | if (strcmp (option, "all") == 0) | |
1344 | { | |
1345 | debug_timestamp = 1; | |
1346 | if (is_monitor) | |
1347 | monitor_output ("All extra debug format options enabled.\n"); | |
1348 | } | |
1349 | else if (strcmp (option, "none") == 0) | |
1350 | { | |
1351 | debug_timestamp = 0; | |
1352 | if (is_monitor) | |
1353 | monitor_output ("All extra debug format options disabled.\n"); | |
1354 | } | |
87ce2a04 DE |
1355 | else if (strcmp (option, "timestamp") == 0) |
1356 | { | |
1357 | debug_timestamp = 1; | |
1358 | if (is_monitor) | |
1359 | monitor_output ("Timestamps will be added to debug output.\n"); | |
1360 | } | |
87ce2a04 DE |
1361 | else if (*option == '\0') |
1362 | { | |
1363 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
1364 | continue; | |
1365 | } | |
1366 | else | |
1367 | { | |
2cc05030 SM |
1368 | std::string msg |
1369 | = string_printf ("Unknown debug-format argument: \"%s\"\n", option); | |
87ce2a04 DE |
1370 | |
1371 | free_char_ptr_vec (options); | |
1372 | return msg; | |
1373 | } | |
1374 | } | |
1375 | ||
1376 | free_char_ptr_vec (options); | |
2cc05030 | 1377 | return std::string (); |
87ce2a04 DE |
1378 | } |
1379 | ||
cdbfd419 PP |
1380 | /* Handle monitor commands not handled by target-specific handlers. */ |
1381 | ||
1382 | static void | |
d73f2619 | 1383 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
1384 | { |
1385 | if (strcmp (mon, "set debug 1") == 0) | |
1386 | { | |
1387 | debug_threads = 1; | |
1388 | monitor_output ("Debug output enabled.\n"); | |
1389 | } | |
1390 | else if (strcmp (mon, "set debug 0") == 0) | |
1391 | { | |
1392 | debug_threads = 0; | |
1393 | monitor_output ("Debug output disabled.\n"); | |
1394 | } | |
1395 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
1396 | { | |
c5e92cca | 1397 | show_debug_regs = 1; |
cdbfd419 PP |
1398 | monitor_output ("H/W point debugging output enabled.\n"); |
1399 | } | |
1400 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1401 | { | |
c5e92cca | 1402 | show_debug_regs = 0; |
cdbfd419 PP |
1403 | monitor_output ("H/W point debugging output disabled.\n"); |
1404 | } | |
1405 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1406 | { | |
1407 | remote_debug = 1; | |
1408 | monitor_output ("Protocol debug output enabled.\n"); | |
1409 | } | |
1410 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1411 | { | |
1412 | remote_debug = 0; | |
1413 | monitor_output ("Protocol debug output disabled.\n"); | |
1414 | } | |
61012eef | 1415 | else if (startswith (mon, "set debug-format ")) |
87ce2a04 | 1416 | { |
2cc05030 | 1417 | std::string error_msg |
87ce2a04 DE |
1418 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, |
1419 | 1); | |
1420 | ||
2cc05030 | 1421 | if (!error_msg.empty ()) |
87ce2a04 | 1422 | { |
2cc05030 | 1423 | monitor_output (error_msg.c_str ()); |
87ce2a04 DE |
1424 | monitor_show_help (); |
1425 | write_enn (own_buf); | |
87ce2a04 DE |
1426 | } |
1427 | } | |
cdbfd419 PP |
1428 | else if (strcmp (mon, "help") == 0) |
1429 | monitor_show_help (); | |
1430 | else if (strcmp (mon, "exit") == 0) | |
1431 | exit_requested = 1; | |
1432 | else | |
1433 | { | |
1434 | monitor_output ("Unknown monitor command.\n\n"); | |
1435 | monitor_show_help (); | |
1436 | write_enn (own_buf); | |
1437 | } | |
1438 | } | |
1439 | ||
d08aafef PA |
1440 | /* Associates a callback with each supported qXfer'able object. */ |
1441 | ||
1442 | struct qxfer | |
1443 | { | |
1444 | /* The object this handler handles. */ | |
1445 | const char *object; | |
1446 | ||
1447 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1448 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1449 | the starting point. The ANNEX can be used to provide additional | |
1450 | data-specific information to the target. | |
1451 | ||
1452 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1453 | further transfer is possible, -1 on error, -2 when the transfer |
1454 | is not supported, and -3 on a verbose error message that should | |
1455 | be preserved. Return of a positive value smaller than LEN does | |
1456 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1457 | |
1458 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1459 | int (*xfer) (const char *annex, | |
1460 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1461 | ULONGEST offset, LONGEST len); | |
1462 | }; | |
1463 | ||
1464 | /* Handle qXfer:auxv:read. */ | |
1465 | ||
1466 | static int | |
1467 | handle_qxfer_auxv (const char *annex, | |
1468 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1469 | ULONGEST offset, LONGEST len) | |
1470 | { | |
1471 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1472 | return -2; | |
1473 | ||
f0db101d | 1474 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1475 | return -1; |
1476 | ||
1477 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1478 | } | |
1479 | ||
e57f1de3 GB |
1480 | /* Handle qXfer:exec-file:read. */ |
1481 | ||
1482 | static int | |
256642e8 | 1483 | handle_qxfer_exec_file (const char *annex, |
e57f1de3 GB |
1484 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1485 | ULONGEST offset, LONGEST len) | |
1486 | { | |
835205d0 | 1487 | char *file; |
e57f1de3 GB |
1488 | ULONGEST pid; |
1489 | int total_len; | |
1490 | ||
1491 | if (the_target->pid_to_exec_file == NULL || writebuf != NULL) | |
1492 | return -2; | |
1493 | ||
256642e8 | 1494 | if (annex[0] == '\0') |
835205d0 GB |
1495 | { |
1496 | if (current_thread == NULL) | |
1497 | return -1; | |
1498 | ||
1499 | pid = pid_of (current_thread); | |
1500 | } | |
1501 | else | |
1502 | { | |
835205d0 | 1503 | annex = unpack_varlen_hex (annex, &pid); |
835205d0 GB |
1504 | if (annex[0] != '\0') |
1505 | return -1; | |
1506 | } | |
1507 | ||
1508 | if (pid <= 0) | |
e57f1de3 GB |
1509 | return -1; |
1510 | ||
1511 | file = (*the_target->pid_to_exec_file) (pid); | |
1512 | if (file == NULL) | |
1513 | return -1; | |
1514 | ||
1515 | total_len = strlen (file); | |
1516 | ||
1517 | if (offset > total_len) | |
1518 | return -1; | |
1519 | ||
1520 | if (offset + len > total_len) | |
1521 | len = total_len - offset; | |
1522 | ||
1523 | memcpy (readbuf, file + offset, len); | |
1524 | return len; | |
1525 | } | |
1526 | ||
d08aafef PA |
1527 | /* Handle qXfer:features:read. */ |
1528 | ||
1529 | static int | |
1530 | handle_qxfer_features (const char *annex, | |
1531 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1532 | ULONGEST offset, LONGEST len) | |
1533 | { | |
1534 | const char *document; | |
1535 | size_t total_len; | |
1536 | ||
1537 | if (writebuf != NULL) | |
1538 | return -2; | |
1539 | ||
1540 | if (!target_running ()) | |
1541 | return -1; | |
1542 | ||
1543 | /* Grab the correct annex. */ | |
1544 | document = get_features_xml (annex); | |
1545 | if (document == NULL) | |
1546 | return -1; | |
1547 | ||
1548 | total_len = strlen (document); | |
1549 | ||
1550 | if (offset > total_len) | |
1551 | return -1; | |
1552 | ||
1553 | if (offset + len > total_len) | |
1554 | len = total_len - offset; | |
1555 | ||
1556 | memcpy (readbuf, document + offset, len); | |
1557 | return len; | |
1558 | } | |
1559 | ||
1560 | /* Handle qXfer:libraries:read. */ | |
1561 | ||
1562 | static int | |
1563 | handle_qxfer_libraries (const char *annex, | |
1564 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1565 | ULONGEST offset, LONGEST len) | |
1566 | { | |
d08aafef PA |
1567 | if (writebuf != NULL) |
1568 | return -2; | |
1569 | ||
f0db101d | 1570 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1571 | return -1; |
1572 | ||
04fd3ba9 | 1573 | std::string document = "<library-list version=\"1.0\">\n"; |
d08aafef | 1574 | |
c9cb8905 SM |
1575 | for (const dll_info &dll : all_dlls) |
1576 | document += string_printf | |
1577 | (" <library name=\"%s\"><segment address=\"0x%lx\"/></library>\n", | |
1578 | dll.name.c_str (), (long) dll.base_addr); | |
d08aafef | 1579 | |
04fd3ba9 | 1580 | document += "</library-list>\n"; |
d08aafef | 1581 | |
04fd3ba9 SM |
1582 | if (offset > document.length ()) |
1583 | return -1; | |
d08aafef | 1584 | |
04fd3ba9 SM |
1585 | if (offset + len > document.length ()) |
1586 | len = document.length () - offset; | |
d08aafef | 1587 | |
04fd3ba9 | 1588 | memcpy (readbuf, &document[offset], len); |
d08aafef | 1589 | |
d08aafef PA |
1590 | return len; |
1591 | } | |
1592 | ||
2268b414 JK |
1593 | /* Handle qXfer:libraries-svr4:read. */ |
1594 | ||
1595 | static int | |
1596 | handle_qxfer_libraries_svr4 (const char *annex, | |
1597 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1598 | ULONGEST offset, LONGEST len) | |
1599 | { | |
1600 | if (writebuf != NULL) | |
1601 | return -2; | |
1602 | ||
f0db101d | 1603 | if (current_thread == NULL || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1604 | return -1; |
1605 | ||
1606 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1607 | } | |
1608 | ||
d08aafef PA |
1609 | /* Handle qXfer:osadata:read. */ |
1610 | ||
1611 | static int | |
1612 | handle_qxfer_osdata (const char *annex, | |
1613 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1614 | ULONGEST offset, LONGEST len) | |
1615 | { | |
1616 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1617 | return -2; | |
1618 | ||
1619 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1620 | } | |
1621 | ||
1622 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1623 | ||
1624 | static int | |
1625 | handle_qxfer_siginfo (const char *annex, | |
1626 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1627 | ULONGEST offset, LONGEST len) | |
1628 | { | |
1629 | if (the_target->qxfer_siginfo == NULL) | |
1630 | return -2; | |
1631 | ||
f0db101d | 1632 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1633 | return -1; |
1634 | ||
1635 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1636 | } | |
1637 | ||
1638 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1639 | ||
1640 | static int | |
1641 | handle_qxfer_spu (const char *annex, | |
1642 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1643 | ULONGEST offset, LONGEST len) | |
1644 | { | |
1645 | if (the_target->qxfer_spu == NULL) | |
1646 | return -2; | |
1647 | ||
f0db101d | 1648 | if (current_thread == NULL) |
d08aafef PA |
1649 | return -1; |
1650 | ||
1651 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1652 | } | |
1653 | ||
1654 | /* Handle qXfer:statictrace:read. */ | |
1655 | ||
1656 | static int | |
1657 | handle_qxfer_statictrace (const char *annex, | |
1658 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1659 | ULONGEST offset, LONGEST len) | |
1660 | { | |
1661 | ULONGEST nbytes; | |
1662 | ||
1663 | if (writebuf != NULL) | |
1664 | return -2; | |
1665 | ||
f0db101d | 1666 | if (annex[0] != '\0' || current_thread == NULL || current_traceframe == -1) |
d08aafef PA |
1667 | return -1; |
1668 | ||
1669 | if (traceframe_read_sdata (current_traceframe, offset, | |
1670 | readbuf, len, &nbytes)) | |
1671 | return -1; | |
1672 | return nbytes; | |
1673 | } | |
1674 | ||
649ebbca DE |
1675 | /* Helper for handle_qxfer_threads_proper. |
1676 | Emit the XML to describe the thread of INF. */ | |
d08aafef | 1677 | |
dc146f7c | 1678 | static void |
c0e15c9b | 1679 | handle_qxfer_threads_worker (thread_info *thread, struct buffer *buffer) |
dc146f7c | 1680 | { |
124aceb4 | 1681 | ptid_t ptid = ptid_of (thread); |
649ebbca DE |
1682 | char ptid_s[100]; |
1683 | int core = target_core_of_thread (ptid); | |
1684 | char core_s[21]; | |
79efa585 | 1685 | const char *name = target_thread_name (ptid); |
f6327dcb KB |
1686 | int handle_len; |
1687 | gdb_byte *handle; | |
1688 | bool handle_status = target_thread_handle (ptid, &handle, &handle_len); | |
dc146f7c | 1689 | |
649ebbca | 1690 | write_ptid (ptid_s, ptid); |
dc146f7c | 1691 | |
79efa585 SM |
1692 | buffer_xml_printf (buffer, "<thread id=\"%s\"", ptid_s); |
1693 | ||
649ebbca | 1694 | if (core != -1) |
dc146f7c | 1695 | { |
649ebbca | 1696 | sprintf (core_s, "%d", core); |
79efa585 | 1697 | buffer_xml_printf (buffer, " core=\"%s\"", core_s); |
649ebbca | 1698 | } |
79efa585 SM |
1699 | |
1700 | if (name != NULL) | |
1701 | buffer_xml_printf (buffer, " name=\"%s\"", name); | |
1702 | ||
f6327dcb KB |
1703 | if (handle_status) |
1704 | { | |
1705 | char *handle_s = (char *) alloca (handle_len * 2 + 1); | |
1706 | bin2hex (handle, handle_s, handle_len); | |
1707 | buffer_xml_printf (buffer, " handle=\"%s\"", handle_s); | |
1708 | } | |
1709 | ||
79efa585 | 1710 | buffer_xml_printf (buffer, "/>\n"); |
649ebbca | 1711 | } |
dc146f7c | 1712 | |
649ebbca | 1713 | /* Helper for handle_qxfer_threads. */ |
dc146f7c | 1714 | |
649ebbca DE |
1715 | static void |
1716 | handle_qxfer_threads_proper (struct buffer *buffer) | |
1717 | { | |
1718 | buffer_grow_str (buffer, "<threads>\n"); | |
1719 | ||
c0e15c9b SM |
1720 | for_each_thread ([&] (thread_info *thread) |
1721 | { | |
1722 | handle_qxfer_threads_worker (thread, buffer); | |
1723 | }); | |
dc146f7c VP |
1724 | |
1725 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1726 | } | |
1727 | ||
d08aafef PA |
1728 | /* Handle qXfer:threads:read. */ |
1729 | ||
dc146f7c | 1730 | static int |
d08aafef PA |
1731 | handle_qxfer_threads (const char *annex, |
1732 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1733 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1734 | { |
1735 | static char *result = 0; | |
1736 | static unsigned int result_length = 0; | |
1737 | ||
d08aafef PA |
1738 | if (writebuf != NULL) |
1739 | return -2; | |
1740 | ||
f0db101d | 1741 | if (annex[0] != '\0') |
d08aafef | 1742 | return -1; |
dc146f7c VP |
1743 | |
1744 | if (offset == 0) | |
1745 | { | |
1746 | struct buffer buffer; | |
1747 | /* When asked for data at offset 0, generate everything and store into | |
1748 | 'result'. Successive reads will be served off 'result'. */ | |
1749 | if (result) | |
1750 | free (result); | |
1751 | ||
1752 | buffer_init (&buffer); | |
1753 | ||
d08aafef | 1754 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1755 | |
1756 | result = buffer_finish (&buffer); | |
1757 | result_length = strlen (result); | |
1758 | buffer_free (&buffer); | |
1759 | } | |
1760 | ||
1761 | if (offset >= result_length) | |
1762 | { | |
1763 | /* We're out of data. */ | |
1764 | free (result); | |
1765 | result = NULL; | |
1766 | result_length = 0; | |
1767 | return 0; | |
1768 | } | |
1769 | ||
d08aafef PA |
1770 | if (len > result_length - offset) |
1771 | len = result_length - offset; | |
1772 | ||
1773 | memcpy (readbuf, result + offset, len); | |
1774 | ||
1775 | return len; | |
1776 | } | |
1777 | ||
b3b9301e PA |
1778 | /* Handle qXfer:traceframe-info:read. */ |
1779 | ||
1780 | static int | |
1781 | handle_qxfer_traceframe_info (const char *annex, | |
1782 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1783 | ULONGEST offset, LONGEST len) | |
1784 | { | |
1785 | static char *result = 0; | |
1786 | static unsigned int result_length = 0; | |
1787 | ||
1788 | if (writebuf != NULL) | |
1789 | return -2; | |
1790 | ||
1791 | if (!target_running () || annex[0] != '\0' || current_traceframe == -1) | |
1792 | return -1; | |
1793 | ||
1794 | if (offset == 0) | |
1795 | { | |
1796 | struct buffer buffer; | |
1797 | ||
1798 | /* When asked for data at offset 0, generate everything and | |
1799 | store into 'result'. Successive reads will be served off | |
1800 | 'result'. */ | |
1801 | free (result); | |
1802 | ||
1803 | buffer_init (&buffer); | |
1804 | ||
1805 | traceframe_read_info (current_traceframe, &buffer); | |
1806 | ||
1807 | result = buffer_finish (&buffer); | |
1808 | result_length = strlen (result); | |
1809 | buffer_free (&buffer); | |
1810 | } | |
1811 | ||
1812 | if (offset >= result_length) | |
1813 | { | |
1814 | /* We're out of data. */ | |
1815 | free (result); | |
1816 | result = NULL; | |
1817 | result_length = 0; | |
1818 | return 0; | |
1819 | } | |
1820 | ||
1821 | if (len > result_length - offset) | |
1822 | len = result_length - offset; | |
1823 | ||
1824 | memcpy (readbuf, result + offset, len); | |
1825 | return len; | |
1826 | } | |
1827 | ||
78d85199 YQ |
1828 | /* Handle qXfer:fdpic:read. */ |
1829 | ||
1830 | static int | |
1831 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1832 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1833 | { | |
1834 | if (the_target->read_loadmap == NULL) | |
1835 | return -2; | |
1836 | ||
f0db101d | 1837 | if (current_thread == NULL) |
78d85199 YQ |
1838 | return -1; |
1839 | ||
1840 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1841 | } | |
1842 | ||
9accd112 MM |
1843 | /* Handle qXfer:btrace:read. */ |
1844 | ||
1845 | static int | |
1846 | handle_qxfer_btrace (const char *annex, | |
1847 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1848 | ULONGEST offset, LONGEST len) | |
1849 | { | |
1850 | static struct buffer cache; | |
1851 | struct thread_info *thread; | |
add67df8 PA |
1852 | enum btrace_read_type type; |
1853 | int result; | |
9accd112 | 1854 | |
b1223e78 | 1855 | if (writebuf != NULL) |
9accd112 MM |
1856 | return -2; |
1857 | ||
9accd112 MM |
1858 | if (ptid_equal (general_thread, null_ptid) |
1859 | || ptid_equal (general_thread, minus_one_ptid)) | |
1860 | { | |
1861 | strcpy (own_buf, "E.Must select a single thread."); | |
1862 | return -3; | |
1863 | } | |
1864 | ||
1865 | thread = find_thread_ptid (general_thread); | |
1866 | if (thread == NULL) | |
1867 | { | |
1868 | strcpy (own_buf, "E.No such thread."); | |
1869 | return -3; | |
1870 | } | |
1871 | ||
1872 | if (thread->btrace == NULL) | |
1873 | { | |
1874 | strcpy (own_buf, "E.Btrace not enabled."); | |
1875 | return -3; | |
1876 | } | |
1877 | ||
1878 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1879 | type = BTRACE_READ_ALL; |
9accd112 | 1880 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1881 | type = BTRACE_READ_NEW; |
969c39fb MM |
1882 | else if (strcmp (annex, "delta") == 0) |
1883 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1884 | else |
1885 | { | |
1886 | strcpy (own_buf, "E.Bad annex."); | |
1887 | return -3; | |
1888 | } | |
1889 | ||
1890 | if (offset == 0) | |
1891 | { | |
1892 | buffer_free (&cache); | |
1893 | ||
b1223e78 MM |
1894 | TRY |
1895 | { | |
1896 | result = target_read_btrace (thread->btrace, &cache, type); | |
1897 | if (result != 0) | |
1898 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1899 | } | |
1900 | CATCH (exception, RETURN_MASK_ERROR) | |
969c39fb | 1901 | { |
b1223e78 MM |
1902 | sprintf (own_buf, "E.%s", exception.message); |
1903 | result = -1; | |
969c39fb | 1904 | } |
b1223e78 MM |
1905 | END_CATCH |
1906 | ||
1907 | if (result != 0) | |
1908 | return -3; | |
9accd112 MM |
1909 | } |
1910 | else if (offset > cache.used_size) | |
1911 | { | |
1912 | buffer_free (&cache); | |
1913 | return -3; | |
1914 | } | |
1915 | ||
1916 | if (len > cache.used_size - offset) | |
1917 | len = cache.used_size - offset; | |
1918 | ||
1919 | memcpy (readbuf, cache.buffer + offset, len); | |
1920 | ||
1921 | return len; | |
1922 | } | |
1923 | ||
f4abbc16 MM |
1924 | /* Handle qXfer:btrace-conf:read. */ |
1925 | ||
1926 | static int | |
1927 | handle_qxfer_btrace_conf (const char *annex, | |
1928 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1929 | ULONGEST offset, LONGEST len) | |
1930 | { | |
1931 | static struct buffer cache; | |
1932 | struct thread_info *thread; | |
1933 | int result; | |
1934 | ||
b1223e78 | 1935 | if (writebuf != NULL) |
f4abbc16 MM |
1936 | return -2; |
1937 | ||
f0db101d | 1938 | if (annex[0] != '\0') |
f4abbc16 MM |
1939 | return -1; |
1940 | ||
1941 | if (ptid_equal (general_thread, null_ptid) | |
1942 | || ptid_equal (general_thread, minus_one_ptid)) | |
1943 | { | |
1944 | strcpy (own_buf, "E.Must select a single thread."); | |
1945 | return -3; | |
1946 | } | |
1947 | ||
1948 | thread = find_thread_ptid (general_thread); | |
1949 | if (thread == NULL) | |
1950 | { | |
1951 | strcpy (own_buf, "E.No such thread."); | |
1952 | return -3; | |
1953 | } | |
1954 | ||
1955 | if (thread->btrace == NULL) | |
1956 | { | |
1957 | strcpy (own_buf, "E.Btrace not enabled."); | |
1958 | return -3; | |
1959 | } | |
1960 | ||
1961 | if (offset == 0) | |
1962 | { | |
1963 | buffer_free (&cache); | |
1964 | ||
b1223e78 MM |
1965 | TRY |
1966 | { | |
1967 | result = target_read_btrace_conf (thread->btrace, &cache); | |
1968 | if (result != 0) | |
1969 | memcpy (own_buf, cache.buffer, cache.used_size); | |
1970 | } | |
1971 | CATCH (exception, RETURN_MASK_ERROR) | |
f4abbc16 | 1972 | { |
b1223e78 MM |
1973 | sprintf (own_buf, "E.%s", exception.message); |
1974 | result = -1; | |
f4abbc16 | 1975 | } |
b1223e78 MM |
1976 | END_CATCH |
1977 | ||
1978 | if (result != 0) | |
1979 | return -3; | |
f4abbc16 MM |
1980 | } |
1981 | else if (offset > cache.used_size) | |
1982 | { | |
1983 | buffer_free (&cache); | |
1984 | return -3; | |
1985 | } | |
1986 | ||
1987 | if (len > cache.used_size - offset) | |
1988 | len = cache.used_size - offset; | |
1989 | ||
1990 | memcpy (readbuf, cache.buffer + offset, len); | |
1991 | ||
1992 | return len; | |
1993 | } | |
1994 | ||
d08aafef PA |
1995 | static const struct qxfer qxfer_packets[] = |
1996 | { | |
1997 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1998 | { "btrace", handle_qxfer_btrace }, |
f4abbc16 | 1999 | { "btrace-conf", handle_qxfer_btrace_conf }, |
e57f1de3 | 2000 | { "exec-file", handle_qxfer_exec_file}, |
78d85199 | 2001 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
2002 | { "features", handle_qxfer_features }, |
2003 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 2004 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
2005 | { "osdata", handle_qxfer_osdata }, |
2006 | { "siginfo", handle_qxfer_siginfo }, | |
2007 | { "spu", handle_qxfer_spu }, | |
2008 | { "statictrace", handle_qxfer_statictrace }, | |
2009 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 2010 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
2011 | }; |
2012 | ||
2013 | static int | |
2014 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
2015 | { | |
2016 | int i; | |
2017 | char *object; | |
2018 | char *rw; | |
2019 | char *annex; | |
2020 | char *offset; | |
2021 | ||
61012eef | 2022 | if (!startswith (own_buf, "qXfer:")) |
d08aafef PA |
2023 | return 0; |
2024 | ||
2025 | /* Grab the object, r/w and annex. */ | |
2026 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
2027 | { | |
2028 | write_enn (own_buf); | |
2029 | return 1; | |
2030 | } | |
2031 | ||
2032 | for (i = 0; | |
2033 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
2034 | i++) | |
2035 | { | |
2036 | const struct qxfer *q = &qxfer_packets[i]; | |
2037 | ||
2038 | if (strcmp (object, q->object) == 0) | |
2039 | { | |
2040 | if (strcmp (rw, "read") == 0) | |
2041 | { | |
2042 | unsigned char *data; | |
2043 | int n; | |
2044 | CORE_ADDR ofs; | |
2045 | unsigned int len; | |
2046 | ||
2047 | /* Grab the offset and length. */ | |
2048 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
2049 | { | |
2050 | write_enn (own_buf); | |
2051 | return 1; | |
2052 | } | |
2053 | ||
2054 | /* Read one extra byte, as an indicator of whether there is | |
2055 | more. */ | |
2056 | if (len > PBUFSIZ - 2) | |
2057 | len = PBUFSIZ - 2; | |
224c3ddb | 2058 | data = (unsigned char *) malloc (len + 1); |
d08aafef PA |
2059 | if (data == NULL) |
2060 | { | |
2061 | write_enn (own_buf); | |
2062 | return 1; | |
2063 | } | |
2064 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
2065 | if (n == -2) | |
2066 | { | |
2067 | free (data); | |
2068 | return 0; | |
2069 | } | |
5cc22e4c MM |
2070 | else if (n == -3) |
2071 | { | |
2072 | /* Preserve error message. */ | |
2073 | } | |
d08aafef PA |
2074 | else if (n < 0) |
2075 | write_enn (own_buf); | |
2076 | else if (n > len) | |
2077 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
2078 | else | |
2079 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
2080 | ||
2081 | free (data); | |
2082 | return 1; | |
2083 | } | |
2084 | else if (strcmp (rw, "write") == 0) | |
2085 | { | |
2086 | int n; | |
2087 | unsigned int len; | |
2088 | CORE_ADDR ofs; | |
2089 | unsigned char *data; | |
2090 | ||
2091 | strcpy (own_buf, "E00"); | |
224c3ddb | 2092 | data = (unsigned char *) malloc (packet_len - (offset - own_buf)); |
d08aafef PA |
2093 | if (data == NULL) |
2094 | { | |
2095 | write_enn (own_buf); | |
2096 | return 1; | |
2097 | } | |
2098 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
2099 | &ofs, &len, data) < 0) | |
2100 | { | |
2101 | free (data); | |
2102 | write_enn (own_buf); | |
2103 | return 1; | |
2104 | } | |
2105 | ||
2106 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
2107 | if (n == -2) | |
2108 | { | |
2109 | free (data); | |
2110 | return 0; | |
2111 | } | |
5cc22e4c MM |
2112 | else if (n == -3) |
2113 | { | |
2114 | /* Preserve error message. */ | |
2115 | } | |
d08aafef PA |
2116 | else if (n < 0) |
2117 | write_enn (own_buf); | |
2118 | else | |
2119 | sprintf (own_buf, "%x", n); | |
dc146f7c | 2120 | |
d08aafef PA |
2121 | free (data); |
2122 | return 1; | |
2123 | } | |
dc146f7c | 2124 | |
d08aafef PA |
2125 | return 0; |
2126 | } | |
2127 | } | |
dc146f7c | 2128 | |
d08aafef | 2129 | return 0; |
dc146f7c VP |
2130 | } |
2131 | ||
30ba68cb MS |
2132 | /* Compute 32 bit CRC from inferior memory. |
2133 | ||
2134 | On success, return 32 bit CRC. | |
2135 | On failure, return (unsigned long long) -1. */ | |
2136 | ||
2137 | static unsigned long long | |
2138 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
2139 | { | |
30ba68cb MS |
2140 | while (len--) |
2141 | { | |
2142 | unsigned char byte = 0; | |
2143 | ||
2144 | /* Return failure if memory read fails. */ | |
2145 | if (read_inferior_memory (base, &byte, 1) != 0) | |
2146 | return (unsigned long long) -1; | |
2147 | ||
65da7f14 | 2148 | crc = xcrc32 (&byte, 1, crc); |
30ba68cb MS |
2149 | base++; |
2150 | } | |
2151 | return (unsigned long long) crc; | |
2152 | } | |
2153 | ||
043c3577 MM |
2154 | /* Add supported btrace packets to BUF. */ |
2155 | ||
2156 | static void | |
2157 | supported_btrace_packets (char *buf) | |
2158 | { | |
de6242d3 MM |
2159 | strcat (buf, ";Qbtrace:bts+"); |
2160 | strcat (buf, ";Qbtrace-conf:bts:size+"); | |
2161 | strcat (buf, ";Qbtrace:pt+"); | |
2162 | strcat (buf, ";Qbtrace-conf:pt:size+"); | |
043c3577 MM |
2163 | strcat (buf, ";Qbtrace:off+"); |
2164 | strcat (buf, ";qXfer:btrace:read+"); | |
f4abbc16 | 2165 | strcat (buf, ";qXfer:btrace-conf:read+"); |
043c3577 MM |
2166 | } |
2167 | ||
ce3a066d | 2168 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 2169 | |
5b3da067 | 2170 | static void |
0e7f50da | 2171 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 2172 | { |
9c80ecd6 | 2173 | static std::list<thread_info *>::const_iterator thread_iter; |
0d62e5e8 | 2174 | |
bb63802a | 2175 | /* Reply the current thread id. */ |
db42f210 | 2176 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 2177 | { |
124aceb4 | 2178 | ptid_t ptid; |
f8a4e119 | 2179 | require_running_or_return (own_buf); |
bd99dc85 | 2180 | |
124aceb4 SM |
2181 | if (general_thread != null_ptid && general_thread != minus_one_ptid) |
2182 | ptid = general_thread; | |
bd99dc85 PA |
2183 | else |
2184 | { | |
9c80ecd6 SM |
2185 | thread_iter = all_threads.begin (); |
2186 | ptid = (*thread_iter)->id; | |
bd99dc85 PA |
2187 | } |
2188 | ||
95954743 PA |
2189 | sprintf (own_buf, "QC"); |
2190 | own_buf += 2; | |
124aceb4 | 2191 | write_ptid (own_buf, ptid); |
bb63802a UW |
2192 | return; |
2193 | } | |
2194 | ||
ce3a066d DJ |
2195 | if (strcmp ("qSymbol::", own_buf) == 0) |
2196 | { | |
34c65914 PA |
2197 | struct thread_info *save_thread = current_thread; |
2198 | ||
2199 | /* For qSymbol, GDB only changes the current thread if the | |
2200 | previous current thread was of a different process. So if | |
2201 | the previous thread is gone, we need to pick another one of | |
2202 | the same process. This can happen e.g., if we followed an | |
2203 | exec in a non-leader thread. */ | |
2204 | if (current_thread == NULL) | |
2205 | { | |
2206 | current_thread | |
2207 | = find_any_thread_of_pid (ptid_get_pid (general_thread)); | |
2208 | ||
2209 | /* Just in case, if we didn't find a thread, then bail out | |
2210 | instead of crashing. */ | |
2211 | if (current_thread == NULL) | |
2212 | { | |
2213 | write_enn (own_buf); | |
2214 | current_thread = save_thread; | |
2215 | return; | |
2216 | } | |
2217 | } | |
2218 | ||
d3bbe7a0 PA |
2219 | /* GDB is suggesting new symbols have been loaded. This may |
2220 | mean a new shared library has been detected as loaded, so | |
2221 | take the opportunity to check if breakpoints we think are | |
2222 | inserted, still are. Note that it isn't guaranteed that | |
2223 | we'll see this when a shared library is loaded, and nor will | |
2224 | we see this for unloads (although breakpoints in unloaded | |
2225 | libraries shouldn't trigger), as GDB may not find symbols for | |
2226 | the library at all. We also re-validate breakpoints when we | |
2227 | see a second GDB breakpoint for the same address, and or when | |
2228 | we access breakpoint shadows. */ | |
2229 | validate_breakpoints (); | |
2230 | ||
fa593d66 PA |
2231 | if (target_supports_tracepoints ()) |
2232 | tracepoint_look_up_symbols (); | |
2233 | ||
f0db101d | 2234 | if (current_thread != NULL && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
2235 | (*the_target->look_up_symbols) (); |
2236 | ||
34c65914 PA |
2237 | current_thread = save_thread; |
2238 | ||
ce3a066d DJ |
2239 | strcpy (own_buf, "OK"); |
2240 | return; | |
2241 | } | |
2242 | ||
db42f210 | 2243 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 2244 | { |
db42f210 | 2245 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 2246 | { |
f8a4e119 | 2247 | require_running_or_return (own_buf); |
9c80ecd6 | 2248 | thread_iter = all_threads.begin (); |
95954743 PA |
2249 | |
2250 | *own_buf++ = 'm'; | |
9c80ecd6 SM |
2251 | ptid_t ptid = (*thread_iter)->id; |
2252 | write_ptid (own_buf, ptid); | |
2253 | thread_iter++; | |
0d62e5e8 DJ |
2254 | return; |
2255 | } | |
db42f210 PA |
2256 | |
2257 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 2258 | { |
f8a4e119 | 2259 | require_running_or_return (own_buf); |
9c80ecd6 | 2260 | if (thread_iter != all_threads.end ()) |
db42f210 | 2261 | { |
95954743 | 2262 | *own_buf++ = 'm'; |
9c80ecd6 SM |
2263 | ptid_t ptid = (*thread_iter)->id; |
2264 | write_ptid (own_buf, ptid); | |
2265 | thread_iter++; | |
db42f210 PA |
2266 | return; |
2267 | } | |
2268 | else | |
2269 | { | |
2270 | sprintf (own_buf, "l"); | |
2271 | return; | |
2272 | } | |
0d62e5e8 DJ |
2273 | } |
2274 | } | |
aa691b87 | 2275 | |
52fb6437 NS |
2276 | if (the_target->read_offsets != NULL |
2277 | && strcmp ("qOffsets", own_buf) == 0) | |
2278 | { | |
2279 | CORE_ADDR text, data; | |
2d717e4f | 2280 | |
f8a4e119 | 2281 | require_running_or_return (own_buf); |
52fb6437 NS |
2282 | if (the_target->read_offsets (&text, &data)) |
2283 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
2284 | (long)text, (long)data, (long)data); | |
2285 | else | |
2286 | write_enn (own_buf); | |
1b3f6016 | 2287 | |
52fb6437 NS |
2288 | return; |
2289 | } | |
2290 | ||
be2a5f71 | 2291 | /* Protocol features query. */ |
61012eef | 2292 | if (startswith (own_buf, "qSupported") |
be2a5f71 DJ |
2293 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
2294 | { | |
95954743 | 2295 | char *p = &own_buf[10]; |
fa593d66 | 2296 | int gdb_supports_qRelocInsn = 0; |
95954743 PA |
2297 | |
2298 | /* Process each feature being provided by GDB. The first | |
2299 | feature will follow a ':', and latter features will follow | |
2300 | ';'. */ | |
2301 | if (*p == ':') | |
d149dd1d PA |
2302 | { |
2303 | char **qsupported = NULL; | |
2304 | int count = 0; | |
06e03fff | 2305 | int unknown = 0; |
d149dd1d PA |
2306 | int i; |
2307 | ||
2308 | /* Two passes, to avoid nested strtok calls in | |
2309 | target_process_qsupported. */ | |
2310 | for (p = strtok (p + 1, ";"); | |
2311 | p != NULL; | |
2312 | p = strtok (NULL, ";")) | |
2313 | { | |
2314 | count++; | |
224c3ddb | 2315 | qsupported = XRESIZEVEC (char *, qsupported, count); |
d149dd1d PA |
2316 | qsupported[count - 1] = xstrdup (p); |
2317 | } | |
2318 | ||
2319 | for (i = 0; i < count; i++) | |
2320 | { | |
2321 | p = qsupported[i]; | |
2322 | if (strcmp (p, "multiprocess+") == 0) | |
2323 | { | |
2324 | /* GDB supports and wants multi-process support if | |
2325 | possible. */ | |
2326 | if (target_supports_multi_process ()) | |
2327 | multi_process = 1; | |
2328 | } | |
fa593d66 PA |
2329 | else if (strcmp (p, "qRelocInsn+") == 0) |
2330 | { | |
2331 | /* GDB supports relocate instruction requests. */ | |
2332 | gdb_supports_qRelocInsn = 1; | |
2333 | } | |
1ec68e26 PA |
2334 | else if (strcmp (p, "swbreak+") == 0) |
2335 | { | |
2336 | /* GDB wants us to report whether a trap is caused | |
2337 | by a software breakpoint and for us to handle PC | |
2338 | adjustment if necessary on this target. */ | |
2339 | if (target_supports_stopped_by_sw_breakpoint ()) | |
2340 | swbreak_feature = 1; | |
2341 | } | |
2342 | else if (strcmp (p, "hwbreak+") == 0) | |
2343 | { | |
2344 | /* GDB wants us to report whether a trap is caused | |
2345 | by a hardware breakpoint. */ | |
2346 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2347 | hwbreak_feature = 1; | |
2348 | } | |
89245bc0 DB |
2349 | else if (strcmp (p, "fork-events+") == 0) |
2350 | { | |
2351 | /* GDB supports and wants fork events if possible. */ | |
2352 | if (target_supports_fork_events ()) | |
2353 | report_fork_events = 1; | |
2354 | } | |
2355 | else if (strcmp (p, "vfork-events+") == 0) | |
2356 | { | |
2357 | /* GDB supports and wants vfork events if possible. */ | |
2358 | if (target_supports_vfork_events ()) | |
2359 | report_vfork_events = 1; | |
2360 | } | |
7c5d0fad | 2361 | else if (strcmp (p, "exec-events+") == 0) |
94585166 DB |
2362 | { |
2363 | /* GDB supports and wants exec events if possible. */ | |
2364 | if (target_supports_exec_events ()) | |
2365 | report_exec_events = 1; | |
2366 | } | |
750ce8d1 YQ |
2367 | else if (strcmp (p, "vContSupported+") == 0) |
2368 | vCont_supported = 1; | |
65706a29 PA |
2369 | else if (strcmp (p, "QThreadEvents+") == 0) |
2370 | ; | |
f2faf941 PA |
2371 | else if (strcmp (p, "no-resumed+") == 0) |
2372 | { | |
2373 | /* GDB supports and wants TARGET_WAITKIND_NO_RESUMED | |
2374 | events. */ | |
2375 | report_no_resumed = 1; | |
2376 | } | |
d149dd1d | 2377 | else |
06e03fff PA |
2378 | { |
2379 | /* Move the unknown features all together. */ | |
2380 | qsupported[i] = NULL; | |
2381 | qsupported[unknown] = p; | |
2382 | unknown++; | |
2383 | } | |
d149dd1d PA |
2384 | } |
2385 | ||
06e03fff PA |
2386 | /* Give the target backend a chance to process the unknown |
2387 | features. */ | |
2388 | target_process_qsupported (qsupported, unknown); | |
2389 | ||
2390 | for (i = 0; i < count; i++) | |
2391 | free (qsupported[i]); | |
d149dd1d PA |
2392 | free (qsupported); |
2393 | } | |
95954743 | 2394 | |
9b224c5e | 2395 | sprintf (own_buf, |
0a2dde4a SDJ |
2396 | "PacketSize=%x;QPassSignals+;QProgramSignals+;" |
2397 | "QStartupWithShell+;QEnvironmentHexEncoded+;" | |
bc3b087d SDJ |
2398 | "QEnvironmentReset+;QEnvironmentUnset+;" |
2399 | "QSetWorkingDir+", | |
9b224c5e | 2400 | PBUFSIZ - 1); |
0876f84a | 2401 | |
82075af2 JS |
2402 | if (target_supports_catch_syscall ()) |
2403 | strcat (own_buf, ";QCatchSyscalls+"); | |
2404 | ||
2268b414 | 2405 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
2406 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
2407 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
2408 | else |
2409 | { | |
2410 | /* We do not have any hook to indicate whether the non-SVR4 target | |
2411 | backend supports qXfer:libraries:read, so always report it. */ | |
2412 | strcat (own_buf, ";qXfer:libraries:read+"); | |
2413 | } | |
255e7678 | 2414 | |
0876f84a | 2415 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 2416 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 2417 | |
0e7f50da UW |
2418 | if (the_target->qxfer_spu != NULL) |
2419 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 2420 | |
4aa995e1 PA |
2421 | if (the_target->qxfer_siginfo != NULL) |
2422 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
2423 | ||
78d85199 YQ |
2424 | if (the_target->read_loadmap != NULL) |
2425 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
2426 | ||
221c031f UW |
2427 | /* We always report qXfer:features:read, as targets may |
2428 | install XML files on a subsequent call to arch_setup. | |
2429 | If we reported to GDB on startup that we don't support | |
2430 | qXfer:feature:read at all, we will never be re-queried. */ | |
2431 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 2432 | |
a6f3e723 SL |
2433 | if (transport_is_reliable) |
2434 | strcat (own_buf, ";QStartNoAckMode+"); | |
07e059b5 VP |
2435 | |
2436 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 2437 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 2438 | |
cf8fd78b PA |
2439 | if (target_supports_multi_process ()) |
2440 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 2441 | |
89245bc0 DB |
2442 | if (target_supports_fork_events ()) |
2443 | strcat (own_buf, ";fork-events+"); | |
2444 | ||
2445 | if (target_supports_vfork_events ()) | |
2446 | strcat (own_buf, ";vfork-events+"); | |
2447 | ||
94585166 DB |
2448 | if (target_supports_exec_events ()) |
2449 | strcat (own_buf, ";exec-events+"); | |
2450 | ||
bd99dc85 PA |
2451 | if (target_supports_non_stop ()) |
2452 | strcat (own_buf, ";QNonStop+"); | |
2453 | ||
03583c20 UW |
2454 | if (target_supports_disable_randomization ()) |
2455 | strcat (own_buf, ";QDisableRandomization+"); | |
2456 | ||
dc146f7c VP |
2457 | strcat (own_buf, ";qXfer:threads:read+"); |
2458 | ||
219f2f23 PA |
2459 | if (target_supports_tracepoints ()) |
2460 | { | |
2461 | strcat (own_buf, ";ConditionalTracepoints+"); | |
2462 | strcat (own_buf, ";TraceStateVariables+"); | |
2463 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 2464 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
2465 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
2466 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 2467 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 2468 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 2469 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 2470 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 2471 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 2472 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 2473 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
2474 | } |
2475 | ||
bd2b2909 AT |
2476 | if (target_supports_hardware_single_step () |
2477 | || target_supports_software_single_step () ) | |
70b90b91 | 2478 | { |
70b90b91 YQ |
2479 | strcat (own_buf, ";ConditionalBreakpoints+"); |
2480 | } | |
d3ce09f5 | 2481 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 2482 | |
d1feda86 YQ |
2483 | if (target_supports_agent ()) |
2484 | strcat (own_buf, ";QAgent+"); | |
2485 | ||
043c3577 | 2486 | supported_btrace_packets (own_buf); |
9accd112 | 2487 | |
1ec68e26 PA |
2488 | if (target_supports_stopped_by_sw_breakpoint ()) |
2489 | strcat (own_buf, ";swbreak+"); | |
2490 | ||
2491 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2492 | strcat (own_buf, ";hwbreak+"); | |
2493 | ||
e57f1de3 GB |
2494 | if (the_target->pid_to_exec_file != NULL) |
2495 | strcat (own_buf, ";qXfer:exec-file:read+"); | |
2496 | ||
750ce8d1 YQ |
2497 | strcat (own_buf, ";vContSupported+"); |
2498 | ||
65706a29 PA |
2499 | strcat (own_buf, ";QThreadEvents+"); |
2500 | ||
f2faf941 PA |
2501 | strcat (own_buf, ";no-resumed+"); |
2502 | ||
14d2069a GB |
2503 | /* Reinitialize components as needed for the new connection. */ |
2504 | hostio_handle_new_gdb_connection (); | |
de0d863e DB |
2505 | target_handle_new_gdb_connection (); |
2506 | ||
be2a5f71 DJ |
2507 | return; |
2508 | } | |
2509 | ||
dae5f5cf DJ |
2510 | /* Thread-local storage support. */ |
2511 | if (the_target->get_tls_address != NULL | |
61012eef | 2512 | && startswith (own_buf, "qGetTLSAddr:")) |
dae5f5cf DJ |
2513 | { |
2514 | char *p = own_buf + 12; | |
5b1c542e | 2515 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 2516 | int i, err; |
95954743 | 2517 | ptid_t ptid = null_ptid; |
dae5f5cf | 2518 | |
f8a4e119 | 2519 | require_running_or_return (own_buf); |
2d717e4f | 2520 | |
dae5f5cf DJ |
2521 | for (i = 0; i < 3; i++) |
2522 | { | |
2523 | char *p2; | |
2524 | int len; | |
2525 | ||
2526 | if (p == NULL) | |
2527 | break; | |
2528 | ||
2529 | p2 = strchr (p, ','); | |
2530 | if (p2) | |
2531 | { | |
2532 | len = p2 - p; | |
2533 | p2++; | |
2534 | } | |
2535 | else | |
2536 | { | |
2537 | len = strlen (p); | |
2538 | p2 = NULL; | |
2539 | } | |
2540 | ||
5b1c542e | 2541 | if (i == 0) |
95954743 | 2542 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
2543 | else |
2544 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
2545 | p = p2; |
2546 | } | |
2547 | ||
2548 | if (p != NULL || i < 3) | |
2549 | err = 1; | |
2550 | else | |
2551 | { | |
e09875d4 | 2552 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
2553 | |
2554 | if (thread == NULL) | |
2555 | err = 2; | |
2556 | else | |
5b1c542e | 2557 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
2558 | &address); |
2559 | } | |
2560 | ||
2561 | if (err == 0) | |
2562 | { | |
c6f46ca0 | 2563 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
2564 | return; |
2565 | } | |
2566 | else if (err > 0) | |
2567 | { | |
2568 | write_enn (own_buf); | |
2569 | return; | |
2570 | } | |
2571 | ||
2572 | /* Otherwise, pretend we do not understand this packet. */ | |
2573 | } | |
2574 | ||
711e434b PM |
2575 | /* Windows OS Thread Information Block address support. */ |
2576 | if (the_target->get_tib_address != NULL | |
61012eef | 2577 | && startswith (own_buf, "qGetTIBAddr:")) |
711e434b | 2578 | { |
256642e8 | 2579 | const char *annex; |
711e434b PM |
2580 | int n; |
2581 | CORE_ADDR tlb; | |
2582 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2583 | ||
2584 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
2585 | if (n == 1) | |
2586 | { | |
c6f46ca0 | 2587 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2588 | return; |
2589 | } | |
2590 | else if (n == 0) | |
2591 | { | |
2592 | write_enn (own_buf); | |
2593 | return; | |
2594 | } | |
2595 | return; | |
2596 | } | |
2597 | ||
c74d0ad8 | 2598 | /* Handle "monitor" commands. */ |
61012eef | 2599 | if (startswith (own_buf, "qRcmd,")) |
c74d0ad8 | 2600 | { |
224c3ddb | 2601 | char *mon = (char *) malloc (PBUFSIZ); |
c74d0ad8 DJ |
2602 | int len = strlen (own_buf + 6); |
2603 | ||
aef93bd7 DE |
2604 | if (mon == NULL) |
2605 | { | |
2606 | write_enn (own_buf); | |
2607 | return; | |
2608 | } | |
2609 | ||
ff0e980e TT |
2610 | if ((len % 2) != 0 |
2611 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2612 | { |
2613 | write_enn (own_buf); | |
2614 | free (mon); | |
2615 | return; | |
2616 | } | |
2617 | mon[len / 2] = '\0'; | |
2618 | ||
2619 | write_ok (own_buf); | |
2620 | ||
cdbfd419 PP |
2621 | if (the_target->handle_monitor_command == NULL |
2622 | || (*the_target->handle_monitor_command) (mon) == 0) | |
2623 | /* Default processing. */ | |
d73f2619 | 2624 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2625 | |
2626 | free (mon); | |
2627 | return; | |
2628 | } | |
2629 | ||
61012eef | 2630 | if (startswith (own_buf, "qSearch:memory:")) |
08388c79 | 2631 | { |
f8a4e119 | 2632 | require_running_or_return (own_buf); |
08388c79 DE |
2633 | handle_search_memory (own_buf, packet_len); |
2634 | return; | |
2635 | } | |
2636 | ||
95954743 | 2637 | if (strcmp (own_buf, "qAttached") == 0 |
61012eef | 2638 | || startswith (own_buf, "qAttached:")) |
0b16c5cf | 2639 | { |
95954743 PA |
2640 | struct process_info *process; |
2641 | ||
2642 | if (own_buf[sizeof ("qAttached") - 1]) | |
2643 | { | |
2644 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
9179355e | 2645 | process = find_process_pid (pid); |
95954743 PA |
2646 | } |
2647 | else | |
2648 | { | |
f8a4e119 | 2649 | require_running_or_return (own_buf); |
95954743 PA |
2650 | process = current_process (); |
2651 | } | |
2652 | ||
2653 | if (process == NULL) | |
2654 | { | |
2655 | write_enn (own_buf); | |
2656 | return; | |
2657 | } | |
2658 | ||
2659 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2660 | return; |
2661 | } | |
2662 | ||
61012eef | 2663 | if (startswith (own_buf, "qCRC:")) |
30ba68cb MS |
2664 | { |
2665 | /* CRC check (compare-section). */ | |
256642e8 | 2666 | const char *comma; |
aca22551 | 2667 | ULONGEST base; |
30ba68cb MS |
2668 | int len; |
2669 | unsigned long long crc; | |
2670 | ||
f8a4e119 | 2671 | require_running_or_return (own_buf); |
aca22551 | 2672 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2673 | if (*comma++ != ',') |
2674 | { | |
2675 | write_enn (own_buf); | |
2676 | return; | |
2677 | } | |
2678 | len = strtoul (comma, NULL, 16); | |
2679 | crc = crc32 (base, len, 0xffffffff); | |
2680 | /* Check for memory failure. */ | |
2681 | if (crc == (unsigned long long) -1) | |
2682 | { | |
2683 | write_enn (own_buf); | |
2684 | return; | |
2685 | } | |
2686 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2687 | return; | |
2688 | } | |
2689 | ||
d08aafef PA |
2690 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2691 | return; | |
2692 | ||
219f2f23 PA |
2693 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2694 | return; | |
2695 | ||
ce3a066d DJ |
2696 | /* Otherwise we didn't know what packet it was. Say we didn't |
2697 | understand it. */ | |
2698 | own_buf[0] = 0; | |
2699 | } | |
2700 | ||
ce1a5b52 | 2701 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2702 | static void resume (struct thread_resume *actions, size_t n); |
2703 | ||
649ebbca DE |
2704 | /* The callback that is passed to visit_actioned_threads. */ |
2705 | typedef int (visit_actioned_threads_callback_ftype) | |
2706 | (const struct thread_resume *, struct thread_info *); | |
2707 | ||
b7ea362b PA |
2708 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2709 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca | 2710 | is found or CALLBACK results false. |
eaddb425 | 2711 | Note: This function is itself a callback for find_thread. */ |
b7ea362b | 2712 | |
eaddb425 SM |
2713 | static bool |
2714 | visit_actioned_threads (thread_info *thread, | |
2715 | const struct thread_resume *actions, | |
2716 | size_t num_actions, | |
2717 | visit_actioned_threads_callback_ftype *callback) | |
b7ea362b | 2718 | { |
eaddb425 | 2719 | for (size_t i = 0; i < num_actions; i++) |
b7ea362b | 2720 | { |
649ebbca | 2721 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2722 | |
649ebbca | 2723 | if (ptid_equal (action->thread, minus_one_ptid) |
9c80ecd6 | 2724 | || ptid_equal (action->thread, thread->id) |
649ebbca | 2725 | || ((ptid_get_pid (action->thread) |
9c80ecd6 | 2726 | == thread->id.pid ()) |
649ebbca | 2727 | && ptid_get_lwp (action->thread) == -1)) |
b7ea362b | 2728 | { |
649ebbca | 2729 | if ((*callback) (action, thread)) |
eaddb425 | 2730 | return true; |
b7ea362b PA |
2731 | } |
2732 | } | |
2733 | ||
eaddb425 | 2734 | return false; |
b7ea362b PA |
2735 | } |
2736 | ||
2737 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2738 | status to report, report it now. */ | |
2739 | ||
2740 | static int | |
2741 | handle_pending_status (const struct thread_resume *resumption, | |
2742 | struct thread_info *thread) | |
2743 | { | |
2744 | if (thread->status_pending_p) | |
2745 | { | |
2746 | thread->status_pending_p = 0; | |
2747 | ||
2748 | last_status = thread->last_status; | |
9c80ecd6 | 2749 | last_ptid = thread->id; |
b7ea362b PA |
2750 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2751 | return 1; | |
2752 | } | |
2753 | return 0; | |
2754 | } | |
ce1a5b52 | 2755 | |
64386c31 | 2756 | /* Parse vCont packets. */ |
5b3da067 | 2757 | static void |
5b1c542e | 2758 | handle_v_cont (char *own_buf) |
64386c31 | 2759 | { |
256642e8 | 2760 | const char *p; |
64386c31 | 2761 | int n = 0, i = 0; |
2bd7c093 | 2762 | struct thread_resume *resume_info; |
436252de | 2763 | struct thread_resume default_action { null_ptid }; |
64386c31 DJ |
2764 | |
2765 | /* Count the number of semicolons in the packet. There should be one | |
2766 | for every action. */ | |
2767 | p = &own_buf[5]; | |
2768 | while (p) | |
2769 | { | |
2770 | n++; | |
2771 | p++; | |
2772 | p = strchr (p, ';'); | |
2773 | } | |
2bd7c093 | 2774 | |
224c3ddb | 2775 | resume_info = (struct thread_resume *) malloc (n * sizeof (resume_info[0])); |
aef93bd7 DE |
2776 | if (resume_info == NULL) |
2777 | goto err; | |
64386c31 | 2778 | |
64386c31 | 2779 | p = &own_buf[5]; |
64386c31 DJ |
2780 | while (*p) |
2781 | { | |
2782 | p++; | |
2783 | ||
c2d6af84 PA |
2784 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2785 | ||
64386c31 | 2786 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2787 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2788 | else if (p[0] == 'r') |
2789 | resume_info[i].kind = resume_step; | |
64386c31 | 2790 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2791 | resume_info[i].kind = resume_continue; |
2792 | else if (p[0] == 't') | |
2793 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2794 | else |
2795 | goto err; | |
2796 | ||
2797 | if (p[0] == 'S' || p[0] == 'C') | |
2798 | { | |
256642e8 PA |
2799 | char *q; |
2800 | int sig = strtol (p + 1, &q, 16); | |
64386c31 DJ |
2801 | if (p == q) |
2802 | goto err; | |
2803 | p = q; | |
2804 | ||
e053fbc4 | 2805 | if (!gdb_signal_to_host_p ((enum gdb_signal) sig)) |
64386c31 | 2806 | goto err; |
e053fbc4 | 2807 | resume_info[i].sig = gdb_signal_to_host ((enum gdb_signal) sig); |
64386c31 | 2808 | } |
c2d6af84 PA |
2809 | else if (p[0] == 'r') |
2810 | { | |
6740dc9c | 2811 | ULONGEST addr; |
c2d6af84 | 2812 | |
6740dc9c PA |
2813 | p = unpack_varlen_hex (p + 1, &addr); |
2814 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2815 | |
6740dc9c PA |
2816 | if (*p != ',') |
2817 | goto err; | |
c2d6af84 | 2818 | |
6740dc9c PA |
2819 | p = unpack_varlen_hex (p + 1, &addr); |
2820 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2821 | } |
64386c31 DJ |
2822 | else |
2823 | { | |
64386c31 DJ |
2824 | p = p + 1; |
2825 | } | |
2826 | ||
2827 | if (p[0] == 0) | |
2828 | { | |
95954743 | 2829 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2830 | default_action = resume_info[i]; |
2831 | ||
2832 | /* Note: we don't increment i here, we'll overwrite this entry | |
2833 | the next time through. */ | |
2834 | } | |
2835 | else if (p[0] == ':') | |
2836 | { | |
256642e8 | 2837 | const char *q; |
95954743 | 2838 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2839 | |
64386c31 DJ |
2840 | if (p == q) |
2841 | goto err; | |
2842 | p = q; | |
2843 | if (p[0] != ';' && p[0] != 0) | |
2844 | goto err; | |
2845 | ||
95954743 | 2846 | resume_info[i].thread = ptid; |
a06660f7 | 2847 | |
64386c31 DJ |
2848 | i++; |
2849 | } | |
2850 | } | |
2851 | ||
2bd7c093 PA |
2852 | if (i < n) |
2853 | resume_info[i] = default_action; | |
64386c31 | 2854 | |
b7ea362b PA |
2855 | resume (resume_info, n); |
2856 | free (resume_info); | |
2857 | return; | |
2858 | ||
2859 | err: | |
2860 | write_enn (own_buf); | |
2861 | free (resume_info); | |
2862 | return; | |
2863 | } | |
2864 | ||
2865 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2866 | ||
2867 | static void | |
2868 | resume (struct thread_resume *actions, size_t num_actions) | |
2869 | { | |
bd99dc85 | 2870 | if (!non_stop) |
b7ea362b PA |
2871 | { |
2872 | /* Check if among the threads that GDB wants actioned, there's | |
2873 | one with a pending status to report. If so, skip actually | |
2874 | resuming/stopping and report the pending event | |
2875 | immediately. */ | |
649ebbca | 2876 | |
eaddb425 SM |
2877 | thread_info *thread_with_status = find_thread ([&] (thread_info *thread) |
2878 | { | |
2879 | return visit_actioned_threads (thread, actions, num_actions, | |
2880 | handle_pending_status); | |
2881 | }); | |
2882 | ||
2883 | if (thread_with_status != NULL) | |
b7ea362b | 2884 | return; |
bd99dc85 | 2885 | |
b7ea362b PA |
2886 | enable_async_io (); |
2887 | } | |
64386c31 | 2888 | |
b7ea362b | 2889 | (*the_target->resume) (actions, num_actions); |
64386c31 | 2890 | |
bd99dc85 PA |
2891 | if (non_stop) |
2892 | write_ok (own_buf); | |
2893 | else | |
2894 | { | |
95954743 | 2895 | last_ptid = mywait (minus_one_ptid, &last_status, 0, 1); |
ce1a5b52 | 2896 | |
f2faf941 PA |
2897 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED |
2898 | && !report_no_resumed) | |
fa96cb38 | 2899 | { |
f2faf941 PA |
2900 | /* The client does not support this stop reply. At least |
2901 | return error. */ | |
fa96cb38 PA |
2902 | sprintf (own_buf, "E.No unwaited-for children left."); |
2903 | disable_async_io (); | |
2904 | return; | |
2905 | } | |
2906 | ||
d20a8ad9 | 2907 | if (last_status.kind != TARGET_WAITKIND_EXITED |
fa96cb38 PA |
2908 | && last_status.kind != TARGET_WAITKIND_SIGNALLED |
2909 | && last_status.kind != TARGET_WAITKIND_NO_RESUMED) | |
0bfdf32f | 2910 | current_thread->last_status = last_status; |
d20a8ad9 | 2911 | |
ce1a5b52 PA |
2912 | /* From the client's perspective, all-stop mode always stops all |
2913 | threads implicitly (and the target backend has already done | |
2914 | so by now). Tag all threads as "want-stopped", so we don't | |
2915 | resume them implicitly without the client telling us to. */ | |
2916 | gdb_wants_all_threads_stopped (); | |
bd99dc85 PA |
2917 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
2918 | disable_async_io (); | |
6bd31874 JB |
2919 | |
2920 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
2921 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
bc1e6c81 | 2922 | target_mourn_inferior (last_ptid); |
bd99dc85 | 2923 | } |
64386c31 DJ |
2924 | } |
2925 | ||
2d717e4f | 2926 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
5b3da067 | 2927 | static int |
5b1c542e | 2928 | handle_v_attach (char *own_buf) |
2d717e4f DJ |
2929 | { |
2930 | int pid; | |
2931 | ||
2932 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2933 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2934 | { |
aeba519e PA |
2935 | /* Don't report shared library events after attaching, even if |
2936 | some libraries are preloaded. GDB will always poll the | |
2937 | library list. Avoids the "stopped by shared library event" | |
2938 | notice on the GDB side. */ | |
2939 | dlls_changed = 0; | |
bd99dc85 PA |
2940 | |
2941 | if (non_stop) | |
2942 | { | |
2943 | /* In non-stop, we don't send a resume reply. Stop events | |
2944 | will follow up using the normal notification | |
2945 | mechanism. */ | |
2946 | write_ok (own_buf); | |
2947 | } | |
2948 | else | |
2949 | prepare_resume_reply (own_buf, last_ptid, &last_status); | |
2950 | ||
2d717e4f DJ |
2951 | return 1; |
2952 | } | |
2953 | else | |
2954 | { | |
2955 | write_enn (own_buf); | |
2956 | return 0; | |
2957 | } | |
2958 | } | |
2959 | ||
2960 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2961 | static int | |
5b1c542e | 2962 | handle_v_run (char *own_buf) |
2d717e4f | 2963 | { |
7c5ded6a SDJ |
2964 | char *p, *next_p; |
2965 | std::vector<char *> new_argv; | |
2090129c | 2966 | char *new_program_name = NULL; |
2d717e4f DJ |
2967 | int i, new_argc; |
2968 | ||
2969 | new_argc = 0; | |
2970 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2971 | { | |
2972 | p++; | |
2973 | new_argc++; | |
2974 | } | |
2975 | ||
7c5ded6a | 2976 | for (i = 0, p = own_buf + strlen ("vRun;"); *p; p = next_p, ++i) |
2d717e4f DJ |
2977 | { |
2978 | next_p = strchr (p, ';'); | |
2979 | if (next_p == NULL) | |
2980 | next_p = p + strlen (p); | |
2981 | ||
2982 | if (i == 0 && p == next_p) | |
7c5ded6a SDJ |
2983 | { |
2984 | /* No program specified. */ | |
2090129c SDJ |
2985 | new_program_name = NULL; |
2986 | } | |
2987 | else if (p == next_p) | |
2988 | { | |
2989 | /* Empty argument. */ | |
2990 | new_argv.push_back (xstrdup ("''")); | |
7c5ded6a | 2991 | } |
2d717e4f DJ |
2992 | else |
2993 | { | |
7c5ded6a | 2994 | size_t len = (next_p - p) / 2; |
2090129c | 2995 | /* ARG is the unquoted argument received via the RSP. */ |
7c5ded6a | 2996 | char *arg = (char *) xmalloc (len + 1); |
2090129c SDJ |
2997 | /* FULL_ARGS will contain the quoted version of ARG. */ |
2998 | char *full_arg = (char *) xmalloc ((len + 1) * 2); | |
2999 | /* These are pointers used to navigate the strings above. */ | |
3000 | char *tmp_arg = arg; | |
3001 | char *tmp_full_arg = full_arg; | |
3002 | int need_quote = 0; | |
7c5ded6a SDJ |
3003 | |
3004 | hex2bin (p, (gdb_byte *) arg, len); | |
3005 | arg[len] = '\0'; | |
2d717e4f | 3006 | |
2090129c SDJ |
3007 | while (*tmp_arg != '\0') |
3008 | { | |
3009 | switch (*tmp_arg) | |
3010 | { | |
3011 | case '\n': | |
3012 | /* Quote \n. */ | |
3013 | *tmp_full_arg = '\''; | |
3014 | ++tmp_full_arg; | |
3015 | need_quote = 1; | |
3016 | break; | |
3017 | ||
3018 | case '\'': | |
3019 | /* Quote single quote. */ | |
3020 | *tmp_full_arg = '\\'; | |
3021 | ++tmp_full_arg; | |
3022 | break; | |
3023 | ||
3024 | default: | |
3025 | break; | |
3026 | } | |
3027 | ||
3028 | *tmp_full_arg = *tmp_arg; | |
3029 | ++tmp_full_arg; | |
3030 | ++tmp_arg; | |
3031 | } | |
3032 | ||
3033 | if (need_quote) | |
3034 | *tmp_full_arg++ = '\''; | |
3035 | ||
3036 | /* Finish FULL_ARG and push it into the vector containing | |
3037 | the argv. */ | |
3038 | *tmp_full_arg = '\0'; | |
3039 | if (i == 0) | |
3040 | new_program_name = full_arg; | |
3041 | else | |
3042 | new_argv.push_back (full_arg); | |
3043 | xfree (arg); | |
3044 | } | |
2d717e4f DJ |
3045 | if (*next_p) |
3046 | next_p++; | |
2d717e4f | 3047 | } |
7c5ded6a | 3048 | new_argv.push_back (NULL); |
2d717e4f | 3049 | |
2090129c | 3050 | if (new_program_name == NULL) |
2d717e4f | 3051 | { |
f142445f DJ |
3052 | /* GDB didn't specify a program to run. Use the program from the |
3053 | last run with the new argument list. */ | |
25e3c82c | 3054 | if (program_path.get () == NULL) |
2d717e4f DJ |
3055 | { |
3056 | write_enn (own_buf); | |
7c5ded6a | 3057 | free_vector_argv (new_argv); |
2d717e4f DJ |
3058 | return 0; |
3059 | } | |
2090129c SDJ |
3060 | } |
3061 | else | |
25e3c82c | 3062 | program_path.set (gdb::unique_xmalloc_ptr<char> (new_program_name)); |
f142445f | 3063 | |
aef93bd7 | 3064 | /* Free the old argv and install the new one. */ |
2090129c SDJ |
3065 | free_vector_argv (program_args); |
3066 | program_args = new_argv; | |
3067 | ||
25e3c82c | 3068 | create_inferior (program_path.get (), program_args); |
2d717e4f | 3069 | |
5b1c542e | 3070 | if (last_status.kind == TARGET_WAITKIND_STOPPED) |
2d717e4f | 3071 | { |
5b1c542e | 3072 | prepare_resume_reply (own_buf, last_ptid, &last_status); |
bd99dc85 PA |
3073 | |
3074 | /* In non-stop, sending a resume reply doesn't set the general | |
3075 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
3076 | query which is the main thread of the new inferior. */ | |
3077 | if (non_stop) | |
3078 | general_thread = last_ptid; | |
3079 | ||
2d717e4f DJ |
3080 | return 1; |
3081 | } | |
3082 | else | |
3083 | { | |
3084 | write_enn (own_buf); | |
3085 | return 0; | |
3086 | } | |
3087 | } | |
3088 | ||
95954743 | 3089 | /* Kill process. Return 1 if successful, 0 if failure. */ |
5b3da067 | 3090 | static int |
95954743 PA |
3091 | handle_v_kill (char *own_buf) |
3092 | { | |
3093 | int pid; | |
3094 | char *p = &own_buf[6]; | |
0f54c268 PM |
3095 | if (multi_process) |
3096 | pid = strtol (p, NULL, 16); | |
3097 | else | |
3098 | pid = signal_pid; | |
95954743 PA |
3099 | if (pid != 0 && kill_inferior (pid) == 0) |
3100 | { | |
3101 | last_status.kind = TARGET_WAITKIND_SIGNALLED; | |
a493e3e2 | 3102 | last_status.value.sig = GDB_SIGNAL_KILL; |
95954743 | 3103 | last_ptid = pid_to_ptid (pid); |
465a859e | 3104 | discard_queued_stop_replies (last_ptid); |
95954743 PA |
3105 | write_ok (own_buf); |
3106 | return 1; | |
3107 | } | |
3108 | else | |
3109 | { | |
3110 | write_enn (own_buf); | |
3111 | return 0; | |
3112 | } | |
3113 | } | |
3114 | ||
64386c31 | 3115 | /* Handle all of the extended 'v' packets. */ |
28170b88 | 3116 | void |
5b1c542e | 3117 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 3118 | { |
db42f210 | 3119 | if (!disable_packet_vCont) |
64386c31 | 3120 | { |
de979965 PA |
3121 | if (strcmp (own_buf, "vCtrlC") == 0) |
3122 | { | |
3123 | (*the_target->request_interrupt) (); | |
3124 | write_ok (own_buf); | |
3125 | return; | |
3126 | } | |
3127 | ||
61012eef | 3128 | if (startswith (own_buf, "vCont;")) |
db42f210 | 3129 | { |
5b1c542e | 3130 | handle_v_cont (own_buf); |
db42f210 PA |
3131 | return; |
3132 | } | |
64386c31 | 3133 | |
61012eef | 3134 | if (startswith (own_buf, "vCont?")) |
db42f210 | 3135 | { |
750ce8d1 YQ |
3136 | strcpy (own_buf, "vCont;c;C;t"); |
3137 | ||
21536b36 YQ |
3138 | if (target_supports_hardware_single_step () |
3139 | || target_supports_software_single_step () | |
3140 | || !vCont_supported) | |
750ce8d1 | 3141 | { |
21536b36 YQ |
3142 | /* If target supports single step either by hardware or by |
3143 | software, add actions s and S to the list of supported | |
3144 | actions. On the other hand, if GDB doesn't request the | |
3145 | supported vCont actions in qSupported packet, add s and | |
3146 | S to the list too. */ | |
750ce8d1 YQ |
3147 | own_buf = own_buf + strlen (own_buf); |
3148 | strcpy (own_buf, ";s;S"); | |
3149 | } | |
3150 | ||
c2d6af84 PA |
3151 | if (target_supports_range_stepping ()) |
3152 | { | |
3153 | own_buf = own_buf + strlen (own_buf); | |
3154 | strcpy (own_buf, ";r"); | |
3155 | } | |
db42f210 PA |
3156 | return; |
3157 | } | |
64386c31 DJ |
3158 | } |
3159 | ||
61012eef | 3160 | if (startswith (own_buf, "vFile:") |
a6b151f1 DJ |
3161 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
3162 | return; | |
3163 | ||
61012eef | 3164 | if (startswith (own_buf, "vAttach;")) |
2d717e4f | 3165 | { |
901f9912 | 3166 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 3167 | { |
fd96d250 PA |
3168 | fprintf (stderr, "Already debugging a process\n"); |
3169 | write_enn (own_buf); | |
3170 | return; | |
2d717e4f | 3171 | } |
5b1c542e | 3172 | handle_v_attach (own_buf); |
2d717e4f DJ |
3173 | return; |
3174 | } | |
3175 | ||
61012eef | 3176 | if (startswith (own_buf, "vRun;")) |
2d717e4f | 3177 | { |
901f9912 | 3178 | if ((!extended_protocol || !multi_process) && target_running ()) |
2d717e4f | 3179 | { |
fd96d250 PA |
3180 | fprintf (stderr, "Already debugging a process\n"); |
3181 | write_enn (own_buf); | |
3182 | return; | |
2d717e4f | 3183 | } |
5b1c542e | 3184 | handle_v_run (own_buf); |
2d717e4f DJ |
3185 | return; |
3186 | } | |
3187 | ||
61012eef | 3188 | if (startswith (own_buf, "vKill;")) |
95954743 PA |
3189 | { |
3190 | if (!target_running ()) | |
3191 | { | |
3192 | fprintf (stderr, "No process to kill\n"); | |
3193 | write_enn (own_buf); | |
3194 | return; | |
3195 | } | |
3196 | handle_v_kill (own_buf); | |
3197 | return; | |
3198 | } | |
3199 | ||
14a00470 YQ |
3200 | if (handle_notif_ack (own_buf, packet_len)) |
3201 | return; | |
bd99dc85 | 3202 | |
64386c31 DJ |
3203 | /* Otherwise we didn't know what packet it was. Say we didn't |
3204 | understand it. */ | |
3205 | own_buf[0] = 0; | |
3206 | return; | |
3207 | } | |
3208 | ||
0bfdf32f | 3209 | /* Resume thread and wait for another event. In non-stop mode, |
bd99dc85 PA |
3210 | don't really wait here, but return immediatelly to the event |
3211 | loop. */ | |
1fd7cdc2 | 3212 | static void |
5b1c542e | 3213 | myresume (char *own_buf, int step, int sig) |
64386c31 DJ |
3214 | { |
3215 | struct thread_resume resume_info[2]; | |
3216 | int n = 0; | |
2bd7c093 | 3217 | int valid_cont_thread; |
a20d5e98 | 3218 | |
95954743 PA |
3219 | valid_cont_thread = (!ptid_equal (cont_thread, null_ptid) |
3220 | && !ptid_equal (cont_thread, minus_one_ptid)); | |
2bd7c093 PA |
3221 | |
3222 | if (step || sig || valid_cont_thread) | |
64386c31 | 3223 | { |
fbd5db48 | 3224 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
3225 | if (step) |
3226 | resume_info[0].kind = resume_step; | |
3227 | else | |
3228 | resume_info[0].kind = resume_continue; | |
64386c31 | 3229 | resume_info[0].sig = sig; |
64386c31 DJ |
3230 | n++; |
3231 | } | |
2bd7c093 PA |
3232 | |
3233 | if (!valid_cont_thread) | |
3234 | { | |
95954743 | 3235 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 3236 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
3237 | resume_info[n].sig = 0; |
3238 | n++; | |
3239 | } | |
64386c31 | 3240 | |
b7ea362b | 3241 | resume (resume_info, n); |
bd99dc85 PA |
3242 | } |
3243 | ||
f0045347 | 3244 | /* Callback for for_each_thread. Make a new stop reply for each |
bd99dc85 PA |
3245 | stopped thread. */ |
3246 | ||
99078d34 SM |
3247 | static void |
3248 | queue_stop_reply_callback (thread_info *thread) | |
bd99dc85 | 3249 | { |
8336d594 PA |
3250 | /* For now, assume targets that don't have this callback also don't |
3251 | manage the thread's last_status field. */ | |
3252 | if (the_target->thread_stopped == NULL) | |
95954743 | 3253 | { |
8d749320 | 3254 | struct vstop_notif *new_notif = XNEW (struct vstop_notif); |
14a00470 | 3255 | |
9c80ecd6 | 3256 | new_notif->ptid = thread->id; |
14a00470 | 3257 | new_notif->status = thread->last_status; |
8336d594 PA |
3258 | /* Pass the last stop reply back to GDB, but don't notify |
3259 | yet. */ | |
14a00470 YQ |
3260 | notif_event_enque (¬if_stop, |
3261 | (struct notif_event *) new_notif); | |
8336d594 PA |
3262 | } |
3263 | else | |
3264 | { | |
3265 | if (thread_stopped (thread)) | |
3266 | { | |
3267 | if (debug_threads) | |
3360c0bf | 3268 | { |
23fdd69e | 3269 | std::string status_string |
3360c0bf LM |
3270 | = target_waitstatus_to_string (&thread->last_status); |
3271 | ||
87ce2a04 | 3272 | debug_printf ("Reporting thread %s as already stopped with %s\n", |
9c80ecd6 | 3273 | target_pid_to_str (thread->id), |
23fdd69e | 3274 | status_string.c_str ()); |
3360c0bf | 3275 | } |
8336d594 | 3276 | |
d20a8ad9 PA |
3277 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
3278 | ||
8336d594 PA |
3279 | /* Pass the last stop reply back to GDB, but don't notify |
3280 | yet. */ | |
9c80ecd6 | 3281 | queue_stop_reply (thread->id, &thread->last_status); |
8336d594 | 3282 | } |
95954743 | 3283 | } |
64386c31 DJ |
3284 | } |
3285 | ||
ce1a5b52 PA |
3286 | /* Set this inferior threads's state as "want-stopped". We won't |
3287 | resume this thread until the client gives us another action for | |
3288 | it. */ | |
8336d594 PA |
3289 | |
3290 | static void | |
9c80ecd6 | 3291 | gdb_wants_thread_stopped (thread_info *thread) |
8336d594 | 3292 | { |
8336d594 PA |
3293 | thread->last_resume_kind = resume_stop; |
3294 | ||
3295 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
3296 | { | |
ce1a5b52 PA |
3297 | /* Most threads are stopped implicitly (all-stop); tag that with |
3298 | signal 0. */ | |
8336d594 | 3299 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 3300 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
3301 | } |
3302 | } | |
3303 | ||
3304 | /* Set all threads' states as "want-stopped". */ | |
3305 | ||
3306 | static void | |
3307 | gdb_wants_all_threads_stopped (void) | |
3308 | { | |
f0045347 | 3309 | for_each_thread (gdb_wants_thread_stopped); |
8336d594 PA |
3310 | } |
3311 | ||
f0045347 | 3312 | /* Callback for for_each_thread. If the thread is stopped with an |
b7ea362b PA |
3313 | interesting event, mark it as having a pending event. */ |
3314 | ||
3315 | static void | |
9c80ecd6 | 3316 | set_pending_status_callback (thread_info *thread) |
b7ea362b | 3317 | { |
b7ea362b PA |
3318 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED |
3319 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
3320 | /* A breakpoint, watchpoint or finished step from a previous | |
3321 | GDB run isn't considered interesting for a new GDB run. | |
3322 | If we left those pending, the new GDB could consider them | |
3323 | random SIGTRAPs. This leaves out real async traps. We'd | |
3324 | have to peek into the (target-specific) siginfo to | |
3325 | distinguish those. */ | |
3326 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
3327 | thread->status_pending_p = 1; | |
3328 | } | |
3329 | ||
5b1c542e PA |
3330 | /* Status handler for the '?' packet. */ |
3331 | ||
3332 | static void | |
3333 | handle_status (char *own_buf) | |
3334 | { | |
8336d594 | 3335 | /* GDB is connected, don't forward events to the target anymore. */ |
9179355e SM |
3336 | for_each_process ([] (process_info *process) { |
3337 | process->gdb_detached = 0; | |
3338 | }); | |
bd99dc85 PA |
3339 | |
3340 | /* In non-stop mode, we must send a stop reply for each stopped | |
3341 | thread. In all-stop mode, just send one for the first stopped | |
3342 | thread we find. */ | |
3343 | ||
3344 | if (non_stop) | |
3345 | { | |
99078d34 | 3346 | for_each_thread (queue_stop_reply_callback); |
bd99dc85 PA |
3347 | |
3348 | /* The first is sent immediatly. OK is sent if there is no | |
3349 | stopped thread, which is the same handling of the vStopped | |
3350 | packet (by design). */ | |
14a00470 | 3351 | notif_write_event (¬if_stop, own_buf); |
bd99dc85 | 3352 | } |
5b1c542e | 3353 | else |
bd99dc85 | 3354 | { |
9c80ecd6 | 3355 | thread_info *thread = NULL; |
b7ea362b | 3356 | |
7984d532 | 3357 | pause_all (0); |
fa593d66 | 3358 | stabilize_threads (); |
8336d594 PA |
3359 | gdb_wants_all_threads_stopped (); |
3360 | ||
b7ea362b PA |
3361 | /* We can only report one status, but we might be coming out of |
3362 | non-stop -- if more than one thread is stopped with | |
3363 | interesting events, leave events for the threads we're not | |
3364 | reporting now pending. They'll be reported the next time the | |
3365 | threads are resumed. Start by marking all interesting events | |
3366 | as pending. */ | |
f0045347 | 3367 | for_each_thread (set_pending_status_callback); |
b7ea362b PA |
3368 | |
3369 | /* Prefer the last thread that reported an event to GDB (even if | |
3370 | that was a GDB_SIGNAL_TRAP). */ | |
3371 | if (last_status.kind != TARGET_WAITKIND_IGNORE | |
3372 | && last_status.kind != TARGET_WAITKIND_EXITED | |
3373 | && last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
8dc7b443 | 3374 | thread = find_thread_ptid (last_ptid); |
b7ea362b PA |
3375 | |
3376 | /* If the last event thread is not found for some reason, look | |
3377 | for some other thread that might have an event to report. */ | |
3378 | if (thread == NULL) | |
99078d34 SM |
3379 | thread = find_thread ([] (thread_info *thread) |
3380 | { | |
3381 | return thread->status_pending_p; | |
3382 | }); | |
b7ea362b PA |
3383 | |
3384 | /* If we're still out of luck, simply pick the first thread in | |
3385 | the thread list. */ | |
3386 | if (thread == NULL) | |
9c80ecd6 | 3387 | thread = get_first_thread (); |
b7ea362b PA |
3388 | |
3389 | if (thread != NULL) | |
8336d594 | 3390 | { |
b7ea362b PA |
3391 | struct thread_info *tp = (struct thread_info *) thread; |
3392 | ||
3393 | /* We're reporting this event, so it's no longer | |
3394 | pending. */ | |
3395 | tp->status_pending_p = 0; | |
3396 | ||
3397 | /* GDB assumes the current thread is the thread we're | |
3398 | reporting the status for. */ | |
3399 | general_thread = thread->id; | |
f557a88a | 3400 | set_desired_thread (); |
8336d594 | 3401 | |
b7ea362b | 3402 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
9c80ecd6 | 3403 | prepare_resume_reply (own_buf, tp->id, &tp->last_status); |
8336d594 | 3404 | } |
bd99dc85 PA |
3405 | else |
3406 | strcpy (own_buf, "W00"); | |
3407 | } | |
5b1c542e PA |
3408 | } |
3409 | ||
dd24457d DJ |
3410 | static void |
3411 | gdbserver_version (void) | |
3412 | { | |
c16158bc | 3413 | printf ("GNU gdbserver %s%s\n" |
82e1e79a | 3414 | "Copyright (C) 2018 Free Software Foundation, Inc.\n" |
493e2a69 MS |
3415 | "gdbserver is free software, covered by the " |
3416 | "GNU General Public License.\n" | |
dd24457d | 3417 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 3418 | PKGVERSION, version, host_name); |
dd24457d DJ |
3419 | } |
3420 | ||
0bc68c49 | 3421 | static void |
c16158bc | 3422 | gdbserver_usage (FILE *stream) |
0bc68c49 | 3423 | { |
c16158bc JM |
3424 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
3425 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
3426 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
3427 | "\n" | |
41f98f02 PA |
3428 | "COMM may either be a tty device (for serial debugging),\n" |
3429 | "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n" | |
3430 | "stdin/stdout of gdbserver.\n" | |
3431 | "PROG is the executable program. ARGS are arguments passed to inferior.\n" | |
3432 | "PID is the process ID to attach to, when --attach is specified.\n" | |
3433 | "\n" | |
3434 | "Operating modes:\n" | |
3435 | "\n" | |
3436 | " --attach Attach to running process PID.\n" | |
3437 | " --multi Start server without a specific program, and\n" | |
3438 | " only quit when explicitly commanded.\n" | |
3439 | " --once Exit after the first connection has closed.\n" | |
3440 | " --help Print this message and then exit.\n" | |
3441 | " --version Display version information and exit.\n" | |
3442 | "\n" | |
3443 | "Other options:\n" | |
3444 | "\n" | |
3445 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" | |
3446 | " --disable-randomization\n" | |
3447 | " Run PROG with address space randomization disabled.\n" | |
3448 | " --no-disable-randomization\n" | |
3449 | " Don't disable address space randomization when\n" | |
3450 | " starting PROG.\n" | |
aefd8b33 SDJ |
3451 | " --startup-with-shell\n" |
3452 | " Start PROG using a shell. I.e., execs a shell that\n" | |
3453 | " then execs PROG. (default)\n" | |
3454 | " --no-startup-with-shell\n" | |
3455 | " Exec PROG directly instead of using a shell.\n" | |
3456 | " Disables argument globbing and variable substitution\n" | |
3457 | " on UNIX-like systems.\n" | |
41f98f02 PA |
3458 | "\n" |
3459 | "Debug options:\n" | |
c16158bc | 3460 | "\n" |
62709adf | 3461 | " --debug Enable general debugging output.\n" |
87ce2a04 DE |
3462 | " --debug-format=opt1[,opt2,...]\n" |
3463 | " Specify extra content in debugging output.\n" | |
3464 | " Options:\n" | |
3465 | " all\n" | |
3466 | " none\n" | |
87ce2a04 | 3467 | " timestamp\n" |
62709adf | 3468 | " --remote-debug Enable remote protocol debugging output.\n" |
41f98f02 PA |
3469 | " --disable-packet=opt1[,opt2,...]\n" |
3470 | " Disable support for RSP packets or features.\n" | |
3471 | " Options:\n" | |
3472 | " vCont, Tthread, qC, qfThreadInfo and \n" | |
3473 | " threads (disable all threading packets).\n" | |
3474 | "\n" | |
3475 | "For more information, consult the GDB manual (available as on-line \n" | |
3476 | "info or a printed manual).\n"); | |
c16158bc JM |
3477 | if (REPORT_BUGS_TO[0] && stream == stdout) |
3478 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
3479 | } |
3480 | ||
db42f210 PA |
3481 | static void |
3482 | gdbserver_show_disableable (FILE *stream) | |
3483 | { | |
3484 | fprintf (stream, "Disableable packets:\n" | |
3485 | " vCont \tAll vCont packets\n" | |
3486 | " qC \tQuerying the current thread\n" | |
3487 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
3488 | " Tthread \tPassing the thread specifier in the " |
3489 | "T stop reply packet\n" | |
db42f210 PA |
3490 | " threads \tAll of the above\n"); |
3491 | } | |
3492 | ||
95954743 | 3493 | static void |
9179355e | 3494 | kill_inferior_callback (process_info *process) |
95954743 | 3495 | { |
9179355e | 3496 | int pid = process->pid; |
95954743 PA |
3497 | |
3498 | kill_inferior (pid); | |
465a859e | 3499 | discard_queued_stop_replies (pid_to_ptid (pid)); |
95954743 PA |
3500 | } |
3501 | ||
9f767825 DE |
3502 | /* Call this when exiting gdbserver with possible inferiors that need |
3503 | to be killed or detached from. */ | |
3504 | ||
3505 | static void | |
3506 | detach_or_kill_for_exit (void) | |
3507 | { | |
3508 | /* First print a list of the inferiors we will be killing/detaching. | |
3509 | This is to assist the user, for example, in case the inferior unexpectedly | |
3510 | dies after we exit: did we screw up or did the inferior exit on its own? | |
3511 | Having this info will save some head-scratching. */ | |
3512 | ||
3513 | if (have_started_inferiors_p ()) | |
3514 | { | |
3515 | fprintf (stderr, "Killing process(es):"); | |
9179355e SM |
3516 | |
3517 | for_each_process ([] (process_info *process) { | |
3518 | if (!process->attached) | |
3519 | fprintf (stderr, " %d", process->pid); | |
3520 | }); | |
3521 | ||
9f767825 DE |
3522 | fprintf (stderr, "\n"); |
3523 | } | |
3524 | if (have_attached_inferiors_p ()) | |
3525 | { | |
3526 | fprintf (stderr, "Detaching process(es):"); | |
9179355e SM |
3527 | |
3528 | for_each_process ([] (process_info *process) { | |
3529 | if (process->attached) | |
3530 | fprintf (stderr, " %d", process->pid); | |
3531 | }); | |
3532 | ||
9f767825 DE |
3533 | fprintf (stderr, "\n"); |
3534 | } | |
3535 | ||
3536 | /* Now we can kill or detach the inferiors. */ | |
9179355e SM |
3537 | for_each_process ([] (process_info *process) { |
3538 | int pid = process->pid; | |
3539 | ||
3540 | if (process->attached) | |
3541 | detach_inferior (pid); | |
3542 | else | |
3543 | kill_inferior (pid); | |
9f767825 | 3544 | |
9179355e SM |
3545 | discard_queued_stop_replies (pid_to_ptid (pid)); |
3546 | }); | |
9f767825 DE |
3547 | } |
3548 | ||
860789c7 GB |
3549 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
3550 | static int exit_code; | |
3551 | ||
3552 | /* Cleanup version of detach_or_kill_for_exit. */ | |
3553 | ||
3554 | static void | |
3555 | detach_or_kill_for_exit_cleanup (void *ignore) | |
3556 | { | |
860789c7 | 3557 | |
492d29ea | 3558 | TRY |
860789c7 GB |
3559 | { |
3560 | detach_or_kill_for_exit (); | |
3561 | } | |
3562 | ||
492d29ea | 3563 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 GB |
3564 | { |
3565 | fflush (stdout); | |
3566 | fprintf (stderr, "Detach or kill failed: %s\n", exception.message); | |
3567 | exit_code = 1; | |
3568 | } | |
492d29ea | 3569 | END_CATCH |
860789c7 GB |
3570 | } |
3571 | ||
3572 | /* Main function. This is called by the real "main" function, | |
3573 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3574 | ||
3575 | static void ATTRIBUTE_NORETURN | |
3576 | captured_main (int argc, char *argv[]) | |
c906108c | 3577 | { |
0729219d DJ |
3578 | int bad_attach; |
3579 | int pid; | |
fb32b4f7 PA |
3580 | char *arg_end; |
3581 | const char *port = NULL; | |
2d717e4f | 3582 | char **next_arg = &argv[1]; |
89dc0afd JK |
3583 | volatile int multi_mode = 0; |
3584 | volatile int attach = 0; | |
2d717e4f | 3585 | int was_running; |
6d580b63 | 3586 | bool selftest = false; |
605fd3c6 | 3587 | #if GDB_SELF_TEST |
1526853e | 3588 | const char *selftest_filter = NULL; |
605fd3c6 | 3589 | #endif |
c906108c | 3590 | |
b4987c95 SDJ |
3591 | current_directory = getcwd (NULL, 0); |
3592 | if (current_directory == NULL) | |
3593 | { | |
81561546 | 3594 | error (_("Could not find current working directory: %s"), |
b4987c95 SDJ |
3595 | safe_strerror (errno)); |
3596 | } | |
3597 | ||
2d717e4f | 3598 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3599 | { |
2d717e4f DJ |
3600 | if (strcmp (*next_arg, "--version") == 0) |
3601 | { | |
3602 | gdbserver_version (); | |
3603 | exit (0); | |
3604 | } | |
3605 | else if (strcmp (*next_arg, "--help") == 0) | |
3606 | { | |
c16158bc | 3607 | gdbserver_usage (stdout); |
2d717e4f DJ |
3608 | exit (0); |
3609 | } | |
3610 | else if (strcmp (*next_arg, "--attach") == 0) | |
3611 | attach = 1; | |
3612 | else if (strcmp (*next_arg, "--multi") == 0) | |
3613 | multi_mode = 1; | |
ccd213ac DJ |
3614 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3615 | { | |
7c5ded6a SDJ |
3616 | char **tmp; |
3617 | ||
ccd213ac DJ |
3618 | next_arg++; |
3619 | ||
7c5ded6a | 3620 | tmp = next_arg; |
ccd213ac | 3621 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) |
7c5ded6a | 3622 | { |
2090129c SDJ |
3623 | wrapper_argv += *next_arg; |
3624 | wrapper_argv += ' '; | |
7c5ded6a SDJ |
3625 | next_arg++; |
3626 | } | |
ccd213ac | 3627 | |
2090129c SDJ |
3628 | if (!wrapper_argv.empty ()) |
3629 | { | |
3630 | /* Erase the last whitespace. */ | |
3631 | wrapper_argv.erase (wrapper_argv.end () - 1); | |
3632 | } | |
3633 | ||
7c5ded6a | 3634 | if (next_arg == tmp || *next_arg == NULL) |
ccd213ac | 3635 | { |
c16158bc | 3636 | gdbserver_usage (stderr); |
ccd213ac DJ |
3637 | exit (1); |
3638 | } | |
3639 | ||
3640 | /* Consume the "--". */ | |
3641 | *next_arg = NULL; | |
3642 | } | |
2d717e4f DJ |
3643 | else if (strcmp (*next_arg, "--debug") == 0) |
3644 | debug_threads = 1; | |
61012eef | 3645 | else if (startswith (*next_arg, "--debug-format=")) |
87ce2a04 | 3646 | { |
2cc05030 | 3647 | std::string error_msg |
87ce2a04 DE |
3648 | = parse_debug_format_options ((*next_arg) |
3649 | + sizeof ("--debug-format=") - 1, 0); | |
3650 | ||
2cc05030 | 3651 | if (!error_msg.empty ()) |
87ce2a04 | 3652 | { |
2cc05030 | 3653 | fprintf (stderr, "%s", error_msg.c_str ()); |
87ce2a04 DE |
3654 | exit (1); |
3655 | } | |
3656 | } | |
62709adf PA |
3657 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
3658 | remote_debug = 1; | |
db42f210 PA |
3659 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3660 | { | |
3661 | gdbserver_show_disableable (stdout); | |
3662 | exit (0); | |
3663 | } | |
61012eef | 3664 | else if (startswith (*next_arg, "--disable-packet=")) |
db42f210 PA |
3665 | { |
3666 | char *packets, *tok; | |
3667 | ||
3668 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
3669 | for (tok = strtok (packets, ","); | |
3670 | tok != NULL; | |
3671 | tok = strtok (NULL, ",")) | |
3672 | { | |
3673 | if (strcmp ("vCont", tok) == 0) | |
3674 | disable_packet_vCont = 1; | |
3675 | else if (strcmp ("Tthread", tok) == 0) | |
3676 | disable_packet_Tthread = 1; | |
3677 | else if (strcmp ("qC", tok) == 0) | |
3678 | disable_packet_qC = 1; | |
3679 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
3680 | disable_packet_qfThreadInfo = 1; | |
3681 | else if (strcmp ("threads", tok) == 0) | |
3682 | { | |
3683 | disable_packet_vCont = 1; | |
3684 | disable_packet_Tthread = 1; | |
3685 | disable_packet_qC = 1; | |
3686 | disable_packet_qfThreadInfo = 1; | |
3687 | } | |
3688 | else | |
3689 | { | |
3690 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3691 | tok); | |
3692 | gdbserver_show_disableable (stderr); | |
3693 | exit (1); | |
3694 | } | |
3695 | } | |
3696 | } | |
e0f9f062 DE |
3697 | else if (strcmp (*next_arg, "-") == 0) |
3698 | { | |
3699 | /* "-" specifies a stdio connection and is a form of port | |
3700 | specification. */ | |
fb32b4f7 PA |
3701 | port = STDIO_CONNECTION_NAME; |
3702 | next_arg++; | |
e0f9f062 DE |
3703 | break; |
3704 | } | |
03583c20 UW |
3705 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
3706 | disable_randomization = 1; | |
3707 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) | |
3708 | disable_randomization = 0; | |
aefd8b33 SDJ |
3709 | else if (strcmp (*next_arg, "--startup-with-shell") == 0) |
3710 | startup_with_shell = true; | |
3711 | else if (strcmp (*next_arg, "--no-startup-with-shell") == 0) | |
3712 | startup_with_shell = false; | |
03f2bd59 JK |
3713 | else if (strcmp (*next_arg, "--once") == 0) |
3714 | run_once = 1; | |
6d580b63 YQ |
3715 | else if (strcmp (*next_arg, "--selftest") == 0) |
3716 | selftest = true; | |
1526853e SM |
3717 | else if (startswith (*next_arg, "--selftest=")) |
3718 | { | |
3719 | selftest = true; | |
605fd3c6 | 3720 | #if GDB_SELF_TEST |
1526853e | 3721 | selftest_filter = *next_arg + strlen ("--selftest="); |
605fd3c6 | 3722 | #endif |
1526853e | 3723 | } |
2d717e4f DJ |
3724 | else |
3725 | { | |
3726 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3727 | exit (1); | |
3728 | } | |
dd24457d | 3729 | |
2d717e4f DJ |
3730 | next_arg++; |
3731 | continue; | |
dd24457d DJ |
3732 | } |
3733 | ||
fb32b4f7 PA |
3734 | if (port == NULL) |
3735 | { | |
3736 | port = *next_arg; | |
3737 | next_arg++; | |
3738 | } | |
6d580b63 YQ |
3739 | if ((port == NULL || (!attach && !multi_mode && *next_arg == NULL)) |
3740 | && !selftest) | |
2d717e4f | 3741 | { |
c16158bc | 3742 | gdbserver_usage (stderr); |
2d717e4f DJ |
3743 | exit (1); |
3744 | } | |
3745 | ||
602e3198 JK |
3746 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3747 | opened by remote_prepare. */ | |
3748 | notice_open_fds (); | |
3749 | ||
e379cee6 | 3750 | save_original_signals_state (false); |
f348d89a | 3751 | |
e0f9f062 DE |
3752 | /* We need to know whether the remote connection is stdio before |
3753 | starting the inferior. Inferiors created in this scenario have | |
3754 | stdin,stdout redirected. So do this here before we call | |
3755 | start_inferior. */ | |
6d580b63 YQ |
3756 | if (port != NULL) |
3757 | remote_prepare (port); | |
e0f9f062 | 3758 | |
0729219d DJ |
3759 | bad_attach = 0; |
3760 | pid = 0; | |
2d717e4f DJ |
3761 | |
3762 | /* --attach used to come after PORT, so allow it there for | |
3763 | compatibility. */ | |
3764 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3765 | { |
2d717e4f DJ |
3766 | attach = 1; |
3767 | next_arg++; | |
45b7b345 DJ |
3768 | } |
3769 | ||
2d717e4f DJ |
3770 | if (attach |
3771 | && (*next_arg == NULL | |
3772 | || (*next_arg)[0] == '\0' | |
3773 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3774 | || *arg_end != '\0' | |
3775 | || next_arg[1] != NULL)) | |
3776 | bad_attach = 1; | |
3777 | ||
3778 | if (bad_attach) | |
dd24457d | 3779 | { |
c16158bc | 3780 | gdbserver_usage (stderr); |
dd24457d DJ |
3781 | exit (1); |
3782 | } | |
c906108c | 3783 | |
2090129c | 3784 | /* Gather information about the environment. */ |
9a6c7d9c | 3785 | our_environ = gdb_environ::from_host_environ (); |
2090129c | 3786 | |
a20d5e98 | 3787 | initialize_async_io (); |
4ce44c66 | 3788 | initialize_low (); |
2090129c | 3789 | have_job_control (); |
60f662b0 | 3790 | initialize_event_loop (); |
219f2f23 PA |
3791 | if (target_supports_tracepoints ()) |
3792 | initialize_tracepoint (); | |
465a859e | 3793 | initialize_notif (); |
4ce44c66 | 3794 | |
224c3ddb SM |
3795 | own_buf = (char *) xmalloc (PBUFSIZ + 1); |
3796 | mem_buf = (unsigned char *) xmalloc (PBUFSIZ); | |
0a30fbc4 | 3797 | |
6d580b63 YQ |
3798 | if (selftest) |
3799 | { | |
605fd3c6 | 3800 | #if GDB_SELF_TEST |
1526853e | 3801 | selftests::run_tests (selftest_filter); |
605fd3c6 YQ |
3802 | #else |
3803 | printf (_("Selftests are not available in a non-development build.\n")); | |
3804 | #endif | |
6d580b63 YQ |
3805 | throw_quit ("Quit"); |
3806 | } | |
3807 | ||
2d717e4f | 3808 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3809 | { |
2d717e4f DJ |
3810 | int i, n; |
3811 | ||
3812 | n = argc - (next_arg - argv); | |
25e3c82c | 3813 | program_path.set (gdb::unique_xmalloc_ptr<char> (xstrdup (next_arg[0]))); |
2090129c SDJ |
3814 | for (i = 1; i < n; i++) |
3815 | program_args.push_back (xstrdup (next_arg[i])); | |
3816 | program_args.push_back (NULL); | |
2d717e4f | 3817 | |
45b7b345 | 3818 | /* Wait till we are at first instruction in program. */ |
25e3c82c | 3819 | create_inferior (program_path.get (), program_args); |
c906108c | 3820 | |
c588c53c MS |
3821 | /* We are now (hopefully) stopped at the first instruction of |
3822 | the target process. This assumes that the target process was | |
3823 | successfully created. */ | |
45b7b345 | 3824 | } |
2d717e4f DJ |
3825 | else if (pid != 0) |
3826 | { | |
5b1c542e | 3827 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3828 | error ("Attaching not supported on this target"); |
3829 | ||
3830 | /* Otherwise succeeded. */ | |
3831 | } | |
45b7b345 DJ |
3832 | else |
3833 | { | |
5b1c542e PA |
3834 | last_status.kind = TARGET_WAITKIND_EXITED; |
3835 | last_status.value.integer = 0; | |
95954743 | 3836 | last_ptid = minus_one_ptid; |
45b7b345 | 3837 | } |
860789c7 | 3838 | make_cleanup (detach_or_kill_for_exit_cleanup, NULL); |
c906108c | 3839 | |
311de423 PA |
3840 | /* Don't report shared library events on the initial connection, |
3841 | even if some libraries are preloaded. Avoids the "stopped by | |
3842 | shared library event" notice on gdb side. */ | |
3843 | dlls_changed = 0; | |
3844 | ||
5b1c542e PA |
3845 | if (last_status.kind == TARGET_WAITKIND_EXITED |
3846 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3847 | was_running = 0; |
3848 | else | |
3849 | was_running = 1; | |
3850 | ||
3851 | if (!was_running && !multi_mode) | |
860789c7 | 3852 | error ("No program to debug"); |
c588c53c | 3853 | |
c906108c SS |
3854 | while (1) |
3855 | { | |
860789c7 | 3856 | |
a6f3e723 | 3857 | noack_mode = 0; |
95954743 | 3858 | multi_process = 0; |
89245bc0 DB |
3859 | report_fork_events = 0; |
3860 | report_vfork_events = 0; | |
94585166 | 3861 | report_exec_events = 0; |
8336d594 PA |
3862 | /* Be sure we're out of tfind mode. */ |
3863 | current_traceframe = -1; | |
40e91bc7 | 3864 | cont_thread = null_ptid; |
1ec68e26 PA |
3865 | swbreak_feature = 0; |
3866 | hwbreak_feature = 0; | |
750ce8d1 | 3867 | vCont_supported = 0; |
bd99dc85 | 3868 | |
2d717e4f | 3869 | remote_open (port); |
c906108c | 3870 | |
492d29ea | 3871 | TRY |
2d717e4f | 3872 | { |
860789c7 GB |
3873 | /* Wait for events. This will return when all event sources |
3874 | are removed from the event loop. */ | |
3875 | start_event_loop (); | |
2d717e4f | 3876 | |
860789c7 | 3877 | /* If an exit was requested (using the "monitor exit" |
fddedbe6 PA |
3878 | command), terminate now. */ |
3879 | if (exit_requested) | |
3880 | throw_quit ("Quit"); | |
3881 | ||
3882 | /* The only other way to get here is for getpkt to fail: | |
3883 | ||
3884 | - If --once was specified, we're done. | |
bd99dc85 | 3885 | |
fddedbe6 PA |
3886 | - If not in extended-remote mode, and we're no longer |
3887 | debugging anything, simply exit: GDB has disconnected | |
3888 | after processing the last process exit. | |
3889 | ||
3890 | - Otherwise, close the connection and reopen it at the | |
3891 | top of the loop. */ | |
3892 | if (run_once || (!extended_protocol && !target_running ())) | |
860789c7 | 3893 | throw_quit ("Quit"); |
bd99dc85 | 3894 | |
860789c7 GB |
3895 | fprintf (stderr, |
3896 | "Remote side has terminated connection. " | |
3897 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3898 | |
860789c7 GB |
3899 | /* Get rid of any pending statuses. An eventual reconnection |
3900 | (by the same GDB instance or another) will refresh all its | |
3901 | state from scratch. */ | |
465a859e | 3902 | discard_queued_stop_replies (minus_one_ptid); |
f0045347 SM |
3903 | for_each_thread ([] (thread_info *thread) |
3904 | { | |
3905 | thread->status_pending_p = 0; | |
3906 | }); | |
9939e131 | 3907 | |
860789c7 | 3908 | if (tracing) |
8336d594 | 3909 | { |
860789c7 | 3910 | if (disconnected_tracing) |
8336d594 | 3911 | { |
860789c7 GB |
3912 | /* Try to enable non-stop/async mode, so we we can |
3913 | both wait for an async socket accept, and handle | |
3914 | async target events simultaneously. There's also | |
3915 | no point either in having the target always stop | |
3916 | all threads, when we're going to pass signals | |
3917 | down without informing GDB. */ | |
3918 | if (!non_stop) | |
3919 | { | |
3920 | if (start_non_stop (1)) | |
3921 | non_stop = 1; | |
3922 | ||
3923 | /* Detaching implicitly resumes all threads; | |
3924 | simply disconnecting does not. */ | |
3925 | } | |
3926 | } | |
3927 | else | |
3928 | { | |
3929 | fprintf (stderr, | |
3930 | "Disconnected tracing disabled; " | |
3931 | "stopping trace run.\n"); | |
3932 | stop_tracing (); | |
8336d594 PA |
3933 | } |
3934 | } | |
860789c7 | 3935 | } |
492d29ea | 3936 | CATCH (exception, RETURN_MASK_ERROR) |
860789c7 | 3937 | { |
608a1e46 PA |
3938 | fflush (stdout); |
3939 | fprintf (stderr, "gdbserver: %s\n", exception.message); | |
3940 | ||
860789c7 | 3941 | if (response_needed) |
8336d594 | 3942 | { |
860789c7 GB |
3943 | write_enn (own_buf); |
3944 | putpkt (own_buf); | |
8336d594 | 3945 | } |
608a1e46 PA |
3946 | |
3947 | if (run_once) | |
3948 | throw_quit ("Quit"); | |
8336d594 | 3949 | } |
492d29ea | 3950 | END_CATCH |
bd99dc85 PA |
3951 | } |
3952 | } | |
01f9e8fa | 3953 | |
860789c7 GB |
3954 | /* Main function. */ |
3955 | ||
3956 | int | |
3957 | main (int argc, char *argv[]) | |
3958 | { | |
860789c7 | 3959 | |
492d29ea | 3960 | TRY |
860789c7 GB |
3961 | { |
3962 | captured_main (argc, argv); | |
3963 | } | |
492d29ea | 3964 | CATCH (exception, RETURN_MASK_ALL) |
860789c7 | 3965 | { |
492d29ea PA |
3966 | if (exception.reason == RETURN_ERROR) |
3967 | { | |
3968 | fflush (stdout); | |
3969 | fprintf (stderr, "%s\n", exception.message); | |
3970 | fprintf (stderr, "Exiting\n"); | |
3971 | exit_code = 1; | |
3972 | } | |
3973 | ||
3974 | exit (exit_code); | |
860789c7 | 3975 | } |
492d29ea | 3976 | END_CATCH |
860789c7 | 3977 | |
492d29ea | 3978 | gdb_assert_not_reached ("captured_main should never return"); |
860789c7 GB |
3979 | } |
3980 | ||
802e8e6d PA |
3981 | /* Process options coming from Z packets for a breakpoint. PACKET is |
3982 | the packet buffer. *PACKET is updated to point to the first char | |
3983 | after the last processed option. */ | |
9f3a5c85 LM |
3984 | |
3985 | static void | |
256642e8 | 3986 | process_point_options (struct gdb_breakpoint *bp, const char **packet) |
9f3a5c85 | 3987 | { |
256642e8 | 3988 | const char *dataptr = *packet; |
d3ce09f5 | 3989 | int persist; |
9f3a5c85 LM |
3990 | |
3991 | /* Check if data has the correct format. */ | |
3992 | if (*dataptr != ';') | |
3993 | return; | |
3994 | ||
3995 | dataptr++; | |
3996 | ||
3997 | while (*dataptr) | |
3998 | { | |
d3ce09f5 SS |
3999 | if (*dataptr == ';') |
4000 | ++dataptr; | |
4001 | ||
4002 | if (*dataptr == 'X') | |
9f3a5c85 | 4003 | { |
d3ce09f5 | 4004 | /* Conditional expression. */ |
d171ca78 | 4005 | if (debug_threads) |
87ce2a04 | 4006 | debug_printf ("Found breakpoint condition.\n"); |
802e8e6d | 4007 | if (!add_breakpoint_condition (bp, &dataptr)) |
8424cc97 | 4008 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 | 4009 | } |
61012eef | 4010 | else if (startswith (dataptr, "cmds:")) |
d3ce09f5 SS |
4011 | { |
4012 | dataptr += strlen ("cmds:"); | |
4013 | if (debug_threads) | |
87ce2a04 | 4014 | debug_printf ("Found breakpoint commands %s.\n", dataptr); |
d3ce09f5 SS |
4015 | persist = (*dataptr == '1'); |
4016 | dataptr += 2; | |
802e8e6d | 4017 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
8424cc97 | 4018 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 SS |
4019 | } |
4020 | else | |
4021 | { | |
d3ce09f5 SS |
4022 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
4023 | *dataptr); | |
78a99e91 | 4024 | /* Skip tokens until we find one that we recognize. */ |
8424cc97 | 4025 | dataptr = strchrnul (dataptr, ';'); |
9f3a5c85 | 4026 | } |
9f3a5c85 LM |
4027 | } |
4028 | *packet = dataptr; | |
4029 | } | |
4030 | ||
bd99dc85 PA |
4031 | /* Event loop callback that handles a serial event. The first byte in |
4032 | the serial buffer gets us here. We expect characters to arrive at | |
4033 | a brisk pace, so we read the rest of the packet with a blocking | |
4034 | getpkt call. */ | |
01f9e8fa | 4035 | |
8336d594 | 4036 | static int |
bd99dc85 PA |
4037 | process_serial_event (void) |
4038 | { | |
bd99dc85 PA |
4039 | int signal; |
4040 | unsigned int len; | |
764880b7 | 4041 | int res; |
bd99dc85 PA |
4042 | CORE_ADDR mem_addr; |
4043 | unsigned char sig; | |
4044 | int packet_len; | |
4045 | int new_packet_len = -1; | |
4046 | ||
bd99dc85 PA |
4047 | disable_async_io (); |
4048 | ||
4049 | response_needed = 0; | |
4050 | packet_len = getpkt (own_buf); | |
4051 | if (packet_len <= 0) | |
4052 | { | |
bd99dc85 | 4053 | remote_close (); |
8336d594 PA |
4054 | /* Force an event loop break. */ |
4055 | return -1; | |
bd99dc85 PA |
4056 | } |
4057 | response_needed = 1; | |
4058 | ||
e8ca139e | 4059 | char ch = own_buf[0]; |
bd99dc85 PA |
4060 | switch (ch) |
4061 | { | |
4062 | case 'q': | |
4063 | handle_query (own_buf, packet_len, &new_packet_len); | |
4064 | break; | |
4065 | case 'Q': | |
4066 | handle_general_set (own_buf); | |
4067 | break; | |
4068 | case 'D': | |
e8ca139e | 4069 | handle_detach (own_buf); |
bd99dc85 PA |
4070 | break; |
4071 | case '!': | |
4072 | extended_protocol = 1; | |
4073 | write_ok (own_buf); | |
4074 | break; | |
4075 | case '?': | |
4076 | handle_status (own_buf); | |
4077 | break; | |
4078 | case 'H': | |
4079 | if (own_buf[1] == 'c' || own_buf[1] == 'g' || own_buf[1] == 's') | |
4080 | { | |
f8a4e119 | 4081 | require_running_or_break (own_buf); |
95954743 | 4082 | |
96cde54f | 4083 | ptid_t thread_id = read_ptid (&own_buf[2], NULL); |
95954743 | 4084 | |
96cde54f | 4085 | if (thread_id == null_ptid || thread_id == minus_one_ptid) |
95954743 | 4086 | thread_id = null_ptid; |
96cde54f | 4087 | else if (thread_id.is_pid ()) |
95954743 | 4088 | { |
96cde54f SM |
4089 | /* The ptid represents a pid. */ |
4090 | thread_info *thread = find_any_thread_of_pid (thread_id.pid ()); | |
785922a5 SM |
4091 | |
4092 | if (thread == NULL) | |
95954743 PA |
4093 | { |
4094 | write_enn (own_buf); | |
4095 | break; | |
4096 | } | |
4097 | ||
9c80ecd6 | 4098 | thread_id = thread->id; |
95954743 | 4099 | } |
bd99dc85 PA |
4100 | else |
4101 | { | |
96cde54f SM |
4102 | /* The ptid represents a lwp/tid. */ |
4103 | if (find_thread_ptid (thread_id) == NULL) | |
c906108c | 4104 | { |
a06660f7 | 4105 | write_enn (own_buf); |
c906108c SS |
4106 | break; |
4107 | } | |
c906108c SS |
4108 | } |
4109 | ||
bd99dc85 | 4110 | if (own_buf[1] == 'g') |
c906108c | 4111 | { |
95954743 | 4112 | if (ptid_equal (thread_id, null_ptid)) |
c906108c | 4113 | { |
bd99dc85 PA |
4114 | /* GDB is telling us to choose any thread. Check if |
4115 | the currently selected thread is still valid. If | |
4116 | it is not, select the first available. */ | |
8dc7b443 | 4117 | thread_info *thread = find_thread_ptid (general_thread); |
bd99dc85 | 4118 | if (thread == NULL) |
f0db101d | 4119 | thread = get_first_thread (); |
9c80ecd6 | 4120 | thread_id = thread->id; |
c906108c | 4121 | } |
bd99dc85 PA |
4122 | |
4123 | general_thread = thread_id; | |
f557a88a | 4124 | set_desired_thread (); |
f0db101d | 4125 | gdb_assert (current_thread != NULL); |
c906108c | 4126 | } |
bd99dc85 PA |
4127 | else if (own_buf[1] == 'c') |
4128 | cont_thread = thread_id; | |
c906108c | 4129 | |
bd99dc85 PA |
4130 | write_ok (own_buf); |
4131 | } | |
4132 | else | |
4133 | { | |
4134 | /* Silently ignore it so that gdb can extend the protocol | |
4135 | without compatibility headaches. */ | |
4136 | own_buf[0] = '\0'; | |
2d717e4f | 4137 | } |
bd99dc85 PA |
4138 | break; |
4139 | case 'g': | |
f8a4e119 | 4140 | require_running_or_break (own_buf); |
219f2f23 PA |
4141 | if (current_traceframe >= 0) |
4142 | { | |
3aee8918 PA |
4143 | struct regcache *regcache |
4144 | = new_register_cache (current_target_desc ()); | |
219f2f23 PA |
4145 | |
4146 | if (fetch_traceframe_registers (current_traceframe, | |
4147 | regcache, -1) == 0) | |
4148 | registers_to_string (regcache, own_buf); | |
4149 | else | |
4150 | write_enn (own_buf); | |
4151 | free_register_cache (regcache); | |
4152 | } | |
4153 | else | |
4154 | { | |
4155 | struct regcache *regcache; | |
4156 | ||
f557a88a | 4157 | if (!set_desired_thread ()) |
f0db101d PA |
4158 | write_enn (own_buf); |
4159 | else | |
4160 | { | |
4161 | regcache = get_thread_regcache (current_thread, 1); | |
4162 | registers_to_string (regcache, own_buf); | |
4163 | } | |
219f2f23 | 4164 | } |
bd99dc85 PA |
4165 | break; |
4166 | case 'G': | |
f8a4e119 | 4167 | require_running_or_break (own_buf); |
219f2f23 PA |
4168 | if (current_traceframe >= 0) |
4169 | write_enn (own_buf); | |
4170 | else | |
4171 | { | |
442ea881 PA |
4172 | struct regcache *regcache; |
4173 | ||
f557a88a | 4174 | if (!set_desired_thread ()) |
f0db101d PA |
4175 | write_enn (own_buf); |
4176 | else | |
4177 | { | |
4178 | regcache = get_thread_regcache (current_thread, 1); | |
4179 | registers_from_string (regcache, &own_buf[1]); | |
4180 | write_ok (own_buf); | |
4181 | } | |
442ea881 | 4182 | } |
bd99dc85 PA |
4183 | break; |
4184 | case 'm': | |
f8a4e119 | 4185 | require_running_or_break (own_buf); |
bd99dc85 | 4186 | decode_m_packet (&own_buf[1], &mem_addr, &len); |
764880b7 PA |
4187 | res = gdb_read_memory (mem_addr, mem_buf, len); |
4188 | if (res < 0) | |
bd99dc85 | 4189 | write_enn (own_buf); |
764880b7 | 4190 | else |
e9371aff | 4191 | bin2hex (mem_buf, own_buf, res); |
bd99dc85 PA |
4192 | break; |
4193 | case 'M': | |
f8a4e119 | 4194 | require_running_or_break (own_buf); |
fa593d66 | 4195 | decode_M_packet (&own_buf[1], &mem_addr, &len, &mem_buf); |
90d74c30 | 4196 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
bd99dc85 PA |
4197 | write_ok (own_buf); |
4198 | else | |
4199 | write_enn (own_buf); | |
4200 | break; | |
4201 | case 'X': | |
f8a4e119 | 4202 | require_running_or_break (own_buf); |
bd99dc85 | 4203 | if (decode_X_packet (&own_buf[1], packet_len - 1, |
fa593d66 | 4204 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 4205 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
bd99dc85 PA |
4206 | write_enn (own_buf); |
4207 | else | |
4208 | write_ok (own_buf); | |
4209 | break; | |
4210 | case 'C': | |
f8a4e119 | 4211 | require_running_or_break (own_buf); |
a7191e8b | 4212 | hex2bin (own_buf + 1, &sig, 1); |
e053fbc4 PA |
4213 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4214 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4215 | else |
4216 | signal = 0; | |
4217 | myresume (own_buf, 0, signal); | |
4218 | break; | |
4219 | case 'S': | |
f8a4e119 | 4220 | require_running_or_break (own_buf); |
a7191e8b | 4221 | hex2bin (own_buf + 1, &sig, 1); |
e053fbc4 PA |
4222 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4223 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4224 | else |
4225 | signal = 0; | |
4226 | myresume (own_buf, 1, signal); | |
4227 | break; | |
4228 | case 'c': | |
f8a4e119 | 4229 | require_running_or_break (own_buf); |
bd99dc85 PA |
4230 | signal = 0; |
4231 | myresume (own_buf, 0, signal); | |
4232 | break; | |
4233 | case 's': | |
f8a4e119 | 4234 | require_running_or_break (own_buf); |
bd99dc85 PA |
4235 | signal = 0; |
4236 | myresume (own_buf, 1, signal); | |
4237 | break; | |
c6314022 AR |
4238 | case 'Z': /* insert_ ... */ |
4239 | /* Fallthrough. */ | |
4240 | case 'z': /* remove_ ... */ | |
bd99dc85 | 4241 | { |
bd99dc85 | 4242 | char *dataptr; |
aca22551 | 4243 | ULONGEST addr; |
27165294 | 4244 | int kind; |
bd99dc85 | 4245 | char type = own_buf[1]; |
c6314022 | 4246 | int res; |
d993e290 | 4247 | const int insert = ch == 'Z'; |
256642e8 | 4248 | const char *p = &own_buf[3]; |
aca22551 PA |
4249 | |
4250 | p = unpack_varlen_hex (p, &addr); | |
27165294 | 4251 | kind = strtol (p + 1, &dataptr, 16); |
c6314022 | 4252 | |
802e8e6d | 4253 | if (insert) |
d993e290 | 4254 | { |
9aa76cd0 | 4255 | struct gdb_breakpoint *bp; |
802e8e6d | 4256 | |
27165294 | 4257 | bp = set_gdb_breakpoint (type, addr, kind, &res); |
802e8e6d | 4258 | if (bp != NULL) |
9f3a5c85 | 4259 | { |
802e8e6d PA |
4260 | res = 0; |
4261 | ||
4262 | /* GDB may have sent us a list of *point parameters to | |
4263 | be evaluated on the target's side. Read such list | |
4264 | here. If we already have a list of parameters, GDB | |
4265 | is telling us to drop that list and use this one | |
4266 | instead. */ | |
0a261ed8 | 4267 | clear_breakpoint_conditions_and_commands (bp); |
256642e8 PA |
4268 | const char *options = dataptr; |
4269 | process_point_options (bp, &options); | |
9f3a5c85 | 4270 | } |
d993e290 | 4271 | } |
802e8e6d | 4272 | else |
27165294 | 4273 | res = delete_gdb_breakpoint (type, addr, kind); |
bd99dc85 | 4274 | |
c6314022 AR |
4275 | if (res == 0) |
4276 | write_ok (own_buf); | |
4277 | else if (res == 1) | |
4278 | /* Unsupported. */ | |
4279 | own_buf[0] = '\0'; | |
bd99dc85 | 4280 | else |
c6314022 | 4281 | write_enn (own_buf); |
bd99dc85 PA |
4282 | break; |
4283 | } | |
4284 | case 'k': | |
4285 | response_needed = 0; | |
4286 | if (!target_running ()) | |
95954743 PA |
4287 | /* The packet we received doesn't make sense - but we can't |
4288 | reply to it, either. */ | |
8336d594 | 4289 | return 0; |
c906108c | 4290 | |
95954743 | 4291 | fprintf (stderr, "Killing all inferiors\n"); |
9179355e SM |
4292 | |
4293 | for_each_process (kill_inferior_callback); | |
c906108c | 4294 | |
bd99dc85 PA |
4295 | /* When using the extended protocol, we wait with no program |
4296 | running. The traditional protocol will exit instead. */ | |
4297 | if (extended_protocol) | |
4298 | { | |
4299 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4300 | last_status.value.sig = GDB_SIGNAL_KILL; |
8336d594 | 4301 | return 0; |
bd99dc85 PA |
4302 | } |
4303 | else | |
8336d594 PA |
4304 | exit (0); |
4305 | ||
bd99dc85 PA |
4306 | case 'T': |
4307 | { | |
f8a4e119 | 4308 | require_running_or_break (own_buf); |
95954743 | 4309 | |
96cde54f SM |
4310 | ptid_t thread_id = read_ptid (&own_buf[1], NULL); |
4311 | if (find_thread_ptid (thread_id) == NULL) | |
bd99dc85 PA |
4312 | { |
4313 | write_enn (own_buf); | |
4314 | break; | |
4315 | } | |
4316 | ||
4317 | if (mythread_alive (thread_id)) | |
4318 | write_ok (own_buf); | |
4319 | else | |
4320 | write_enn (own_buf); | |
4321 | } | |
4322 | break; | |
4323 | case 'R': | |
4324 | response_needed = 0; | |
4325 | ||
4326 | /* Restarting the inferior is only supported in the extended | |
4327 | protocol. */ | |
4328 | if (extended_protocol) | |
4329 | { | |
4330 | if (target_running ()) | |
9179355e SM |
4331 | for_each_process (kill_inferior_callback); |
4332 | ||
bd99dc85 PA |
4333 | fprintf (stderr, "GDBserver restarting\n"); |
4334 | ||
4335 | /* Wait till we are at 1st instruction in prog. */ | |
25e3c82c | 4336 | if (program_path.get () != NULL) |
51aee833 | 4337 | { |
25e3c82c | 4338 | create_inferior (program_path.get (), program_args); |
2090129c | 4339 | |
51aee833 YQ |
4340 | if (last_status.kind == TARGET_WAITKIND_STOPPED) |
4341 | { | |
4342 | /* Stopped at the first instruction of the target | |
4343 | process. */ | |
4344 | general_thread = last_ptid; | |
4345 | } | |
4346 | else | |
4347 | { | |
4348 | /* Something went wrong. */ | |
4349 | general_thread = null_ptid; | |
4350 | } | |
4351 | } | |
bd99dc85 PA |
4352 | else |
4353 | { | |
4354 | last_status.kind = TARGET_WAITKIND_EXITED; | |
a493e3e2 | 4355 | last_status.value.sig = GDB_SIGNAL_KILL; |
bd99dc85 | 4356 | } |
8336d594 | 4357 | return 0; |
c906108c SS |
4358 | } |
4359 | else | |
4360 | { | |
bd99dc85 PA |
4361 | /* It is a request we don't understand. Respond with an |
4362 | empty packet so that gdb knows that we don't support this | |
4363 | request. */ | |
4364 | own_buf[0] = '\0'; | |
4365 | break; | |
4366 | } | |
4367 | case 'v': | |
4368 | /* Extended (long) request. */ | |
4369 | handle_v_requests (own_buf, packet_len, &new_packet_len); | |
4370 | break; | |
4371 | ||
4372 | default: | |
4373 | /* It is a request we don't understand. Respond with an empty | |
4374 | packet so that gdb knows that we don't support this | |
4375 | request. */ | |
4376 | own_buf[0] = '\0'; | |
4377 | break; | |
4378 | } | |
4379 | ||
4380 | if (new_packet_len != -1) | |
4381 | putpkt_binary (own_buf, new_packet_len); | |
4382 | else | |
4383 | putpkt (own_buf); | |
4384 | ||
4385 | response_needed = 0; | |
4386 | ||
8336d594 PA |
4387 | if (exit_requested) |
4388 | return -1; | |
4389 | ||
4390 | return 0; | |
c906108c | 4391 | } |
bd99dc85 PA |
4392 | |
4393 | /* Event-loop callback for serial events. */ | |
4394 | ||
8336d594 | 4395 | int |
bd99dc85 PA |
4396 | handle_serial_event (int err, gdb_client_data client_data) |
4397 | { | |
4398 | if (debug_threads) | |
87ce2a04 | 4399 | debug_printf ("handling possible serial event\n"); |
bd99dc85 PA |
4400 | |
4401 | /* Really handle it. */ | |
8336d594 PA |
4402 | if (process_serial_event () < 0) |
4403 | return -1; | |
bd99dc85 | 4404 | |
0bfdf32f | 4405 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4406 | Important in the non-stop mode asynchronous protocol. */ |
f557a88a | 4407 | set_desired_thread (); |
8336d594 PA |
4408 | |
4409 | return 0; | |
bd99dc85 PA |
4410 | } |
4411 | ||
f2faf941 PA |
4412 | /* Push a stop notification on the notification queue. */ |
4413 | ||
4414 | static void | |
4415 | push_stop_notification (ptid_t ptid, struct target_waitstatus *status) | |
4416 | { | |
4417 | struct vstop_notif *vstop_notif = XNEW (struct vstop_notif); | |
4418 | ||
4419 | vstop_notif->status = *status; | |
4420 | vstop_notif->ptid = ptid; | |
4421 | /* Push Stop notification. */ | |
4422 | notif_push (¬if_stop, (struct notif_event *) vstop_notif); | |
4423 | } | |
4424 | ||
bd99dc85 PA |
4425 | /* Event-loop callback for target events. */ |
4426 | ||
8336d594 | 4427 | int |
bd99dc85 PA |
4428 | handle_target_event (int err, gdb_client_data client_data) |
4429 | { | |
4430 | if (debug_threads) | |
87ce2a04 | 4431 | debug_printf ("handling possible target event\n"); |
bd99dc85 | 4432 | |
95954743 PA |
4433 | last_ptid = mywait (minus_one_ptid, &last_status, |
4434 | TARGET_WNOHANG, 1); | |
bd99dc85 | 4435 | |
fa96cb38 PA |
4436 | if (last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
4437 | { | |
f2faf941 PA |
4438 | if (gdb_connected () && report_no_resumed) |
4439 | push_stop_notification (null_ptid, &last_status); | |
fa96cb38 PA |
4440 | } |
4441 | else if (last_status.kind != TARGET_WAITKIND_IGNORE) | |
bd99dc85 | 4442 | { |
8336d594 PA |
4443 | int pid = ptid_get_pid (last_ptid); |
4444 | struct process_info *process = find_process_pid (pid); | |
4445 | int forward_event = !gdb_connected () || process->gdb_detached; | |
4446 | ||
4447 | if (last_status.kind == TARGET_WAITKIND_EXITED | |
4448 | || last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
4449 | { |
4450 | mark_breakpoints_out (process); | |
bc1e6c81 | 4451 | target_mourn_inferior (last_ptid); |
f9e39928 | 4452 | } |
65706a29 PA |
4453 | else if (last_status.kind == TARGET_WAITKIND_THREAD_EXITED) |
4454 | ; | |
ce1a5b52 | 4455 | else |
d20a8ad9 PA |
4456 | { |
4457 | /* We're reporting this thread as stopped. Update its | |
4458 | "want-stopped" state to what the client wants, until it | |
4459 | gets a new resume action. */ | |
0bfdf32f GB |
4460 | current_thread->last_resume_kind = resume_stop; |
4461 | current_thread->last_status = last_status; | |
d20a8ad9 | 4462 | } |
8336d594 PA |
4463 | |
4464 | if (forward_event) | |
4465 | { | |
4466 | if (!target_running ()) | |
4467 | { | |
4468 | /* The last process exited. We're done. */ | |
4469 | exit (0); | |
4470 | } | |
4471 | ||
65706a29 PA |
4472 | if (last_status.kind == TARGET_WAITKIND_EXITED |
4473 | || last_status.kind == TARGET_WAITKIND_SIGNALLED | |
4474 | || last_status.kind == TARGET_WAITKIND_THREAD_EXITED) | |
4475 | ; | |
4476 | else | |
8336d594 PA |
4477 | { |
4478 | /* A thread stopped with a signal, but gdb isn't | |
4479 | connected to handle it. Pass it down to the | |
4480 | inferior, as if it wasn't being traced. */ | |
049a8570 | 4481 | enum gdb_signal signal; |
8336d594 PA |
4482 | |
4483 | if (debug_threads) | |
87ce2a04 DE |
4484 | debug_printf ("GDB not connected; forwarding event %d for" |
4485 | " [%s]\n", | |
4486 | (int) last_status.kind, | |
4487 | target_pid_to_str (last_ptid)); | |
8336d594 | 4488 | |
65706a29 | 4489 | if (last_status.kind == TARGET_WAITKIND_STOPPED) |
049a8570 | 4490 | signal = last_status.value.sig; |
65706a29 | 4491 | else |
049a8570 SDJ |
4492 | signal = GDB_SIGNAL_0; |
4493 | target_continue (last_ptid, signal); | |
8336d594 | 4494 | } |
8336d594 PA |
4495 | } |
4496 | else | |
f2faf941 | 4497 | push_stop_notification (last_ptid, &last_status); |
bd99dc85 PA |
4498 | } |
4499 | ||
0bfdf32f | 4500 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4501 | Important in the non-stop mode asynchronous protocol. */ |
f557a88a | 4502 | set_desired_thread (); |
8336d594 PA |
4503 | |
4504 | return 0; | |
bd99dc85 | 4505 | } |
6d580b63 YQ |
4506 | |
4507 | #if GDB_SELF_TEST | |
4508 | namespace selftests | |
4509 | { | |
4510 | ||
4511 | void | |
4512 | reset () | |
4513 | {} | |
4514 | ||
4515 | } // namespace selftests | |
4516 | #endif /* GDB_SELF_TEST */ |