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c906108c | 1 | /* Main code for remote server for GDB. |
e1ca5534 | 2 | Copyright (C) 1989-2023 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" |
268a13a5 | 21 | #include "gdbsupport/agent.h" |
14a00470 | 22 | #include "notif.h" |
3aee8918 | 23 | #include "tdesc.h" |
268a13a5 TT |
24 | #include "gdbsupport/rsp-low.h" |
25 | #include "gdbsupport/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 |
268a13a5 TT |
31 | #include "gdbsupport/gdb_vecs.h" |
32 | #include "gdbsupport/gdb_wait.h" | |
33 | #include "gdbsupport/btrace-common.h" | |
34 | #include "gdbsupport/filestuff.h" | |
c144c7a0 | 35 | #include "tracepoint.h" |
799cdc37 | 36 | #include "dll.h" |
533b0600 | 37 | #include "hostio.h" |
7c5ded6a | 38 | #include <vector> |
268a13a5 TT |
39 | #include "gdbsupport/common-inferior.h" |
40 | #include "gdbsupport/job-control.h" | |
41 | #include "gdbsupport/environ.h" | |
25e3c82c | 42 | #include "filenames.h" |
268a13a5 | 43 | #include "gdbsupport/pathstuff.h" |
fec4e896 CB |
44 | #ifdef USE_XML |
45 | #include "xml-builtin.h" | |
46 | #endif | |
2090129c | 47 | |
268a13a5 TT |
48 | #include "gdbsupport/selftest.h" |
49 | #include "gdbsupport/scope-exit.h" | |
e487f994 | 50 | #include "gdbsupport/gdb_select.h" |
028a4603 | 51 | #include "gdbsupport/scoped_restore.h" |
55b10d89 | 52 | #include "gdbsupport/search.h" |
6d580b63 | 53 | |
81aa19c3 TT |
54 | /* PBUFSIZ must also be at least as big as IPA_CMD_BUF_SIZE, because |
55 | the client state data is passed directly to some agent | |
56 | functions. */ | |
57 | gdb_static_assert (PBUFSIZ >= IPA_CMD_BUF_SIZE); | |
58 | ||
f8a4e119 SM |
59 | #define require_running_or_return(BUF) \ |
60 | if (!target_running ()) \ | |
61 | { \ | |
62 | write_enn (BUF); \ | |
63 | return; \ | |
64 | } | |
65 | ||
66 | #define require_running_or_break(BUF) \ | |
67 | if (!target_running ()) \ | |
68 | { \ | |
69 | write_enn (BUF); \ | |
70 | break; \ | |
71 | } | |
72 | ||
2090129c SDJ |
73 | /* The environment to pass to the inferior when creating it. */ |
74 | ||
9a6c7d9c | 75 | static gdb_environ our_environ; |
2090129c | 76 | |
3e6ec53a | 77 | bool server_waiting; |
0d62e5e8 | 78 | |
3e6ec53a CB |
79 | static bool extended_protocol; |
80 | static bool response_needed; | |
81 | static bool exit_requested; | |
2d717e4f | 82 | |
03f2bd59 | 83 | /* --once: Exit after the first connection has closed. */ |
3e6ec53a | 84 | bool run_once; |
03f2bd59 | 85 | |
30baf67b | 86 | /* Whether to report TARGET_WAITKIND_NO_RESUMED events. */ |
3e6ec53a | 87 | static bool report_no_resumed; |
f2faf941 | 88 | |
55d7aec8 TT |
89 | /* The event loop checks this to decide whether to continue accepting |
90 | events. */ | |
91 | static bool keep_processing_events = true; | |
92 | ||
3e6ec53a | 93 | bool non_stop; |
03583c20 | 94 | |
25e3c82c SDJ |
95 | static struct { |
96 | /* Set the PROGRAM_PATH. Here we adjust the path of the provided | |
97 | binary if needed. */ | |
7ab2607f | 98 | void set (const char *path) |
25e3c82c | 99 | { |
7ab2607f | 100 | m_path = path; |
25e3c82c SDJ |
101 | |
102 | /* Make sure we're using the absolute path of the inferior when | |
103 | creating it. */ | |
7ab2607f | 104 | if (!contains_dir_separator (m_path.c_str ())) |
25e3c82c SDJ |
105 | { |
106 | int reg_file_errno; | |
107 | ||
108 | /* Check if the file is in our CWD. If it is, then we prefix | |
109 | its name with CURRENT_DIRECTORY. Otherwise, we leave the | |
110 | name as-is because we'll try searching for it in $PATH. */ | |
7ab2607f SM |
111 | if (is_regular_file (m_path.c_str (), ®_file_errno)) |
112 | m_path = gdb_abspath (m_path.c_str ()); | |
25e3c82c SDJ |
113 | } |
114 | } | |
115 | ||
116 | /* Return the PROGRAM_PATH. */ | |
7ab2607f SM |
117 | const char *get () |
118 | { return m_path.empty () ? nullptr : m_path.c_str (); } | |
25e3c82c SDJ |
119 | |
120 | private: | |
121 | /* The program name, adjusted if needed. */ | |
7ab2607f | 122 | std::string m_path; |
25e3c82c | 123 | } program_path; |
2090129c SDJ |
124 | static std::vector<char *> program_args; |
125 | static std::string wrapper_argv; | |
2d717e4f | 126 | |
a9fa9f7d DJ |
127 | /* The PID of the originally created or attached inferior. Used to |
128 | send signals to the process when GDB sends us an asynchronous interrupt | |
129 | (user hitting Control-C in the client), and to wait for the child to exit | |
130 | when no longer debugging it. */ | |
131 | ||
a1928bad | 132 | unsigned long signal_pid; |
a9fa9f7d | 133 | |
ec56be1b PA |
134 | /* Set if you want to disable optional thread related packets support |
135 | in gdbserver, for the sake of testing GDB against stubs that don't | |
136 | support them. */ | |
3e6ec53a CB |
137 | bool disable_packet_vCont; |
138 | bool disable_packet_Tthread; | |
139 | bool disable_packet_qC; | |
140 | bool disable_packet_qfThreadInfo; | |
442131c1 | 141 | bool disable_packet_T; |
ec56be1b | 142 | |
bd99dc85 PA |
143 | static unsigned char *mem_buf; |
144 | ||
14a00470 YQ |
145 | /* A sub-class of 'struct notif_event' for stop, holding information |
146 | relative to a single stop reply. We keep a queue of these to | |
147 | push to GDB in non-stop mode. */ | |
148 | ||
b494cdff | 149 | struct vstop_notif : public notif_event |
bd99dc85 | 150 | { |
bd99dc85 | 151 | /* Thread or process that got the event. */ |
95954743 | 152 | ptid_t ptid; |
bd99dc85 PA |
153 | |
154 | /* Event info. */ | |
155 | struct target_waitstatus status; | |
156 | }; | |
157 | ||
f4abbc16 MM |
158 | /* The current btrace configuration. This is gdbserver's mirror of GDB's |
159 | btrace configuration. */ | |
160 | static struct btrace_config current_btrace_conf; | |
161 | ||
c12a5089 SC |
162 | /* The client remote protocol state. */ |
163 | ||
164 | static client_state g_client_state; | |
165 | ||
166 | client_state & | |
167 | get_client_state () | |
168 | { | |
169 | client_state &cs = g_client_state; | |
170 | return cs; | |
171 | } | |
172 | ||
173 | ||
bd99dc85 PA |
174 | /* Put a stop reply to the stop reply queue. */ |
175 | ||
176 | static void | |
c272a98c | 177 | queue_stop_reply (ptid_t ptid, const target_waitstatus &status) |
bd99dc85 | 178 | { |
b494cdff | 179 | struct vstop_notif *new_notif = new struct vstop_notif; |
bd99dc85 | 180 | |
bd99dc85 | 181 | new_notif->ptid = ptid; |
c272a98c | 182 | new_notif->status = status; |
bd99dc85 | 183 | |
b494cdff | 184 | notif_event_enque (¬if_stop, new_notif); |
bd99dc85 PA |
185 | } |
186 | ||
b494cdff TT |
187 | static bool |
188 | remove_all_on_match_ptid (struct notif_event *event, ptid_t filter_ptid) | |
bd99dc85 | 189 | { |
465a859e | 190 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; |
d20a8ad9 | 191 | |
b494cdff | 192 | return vstop_event->ptid.matches (filter_ptid); |
bd99dc85 PA |
193 | } |
194 | ||
465a859e | 195 | /* See server.h. */ |
bd99dc85 | 196 | |
465a859e PA |
197 | void |
198 | discard_queued_stop_replies (ptid_t ptid) | |
bd99dc85 | 199 | { |
b494cdff TT |
200 | std::list<notif_event *>::iterator iter, next, end; |
201 | end = notif_stop.queue.end (); | |
202 | for (iter = notif_stop.queue.begin (); iter != end; iter = next) | |
203 | { | |
204 | next = iter; | |
205 | ++next; | |
206 | ||
b0083dd7 PA |
207 | if (iter == notif_stop.queue.begin ()) |
208 | { | |
209 | /* The head of the list contains the notification that was | |
210 | already sent to GDB. So we can't remove it, otherwise | |
211 | when GDB sends the vStopped, it would ack the _next_ | |
212 | notification, which hadn't been sent yet! */ | |
213 | continue; | |
214 | } | |
215 | ||
b494cdff TT |
216 | if (remove_all_on_match_ptid (*iter, ptid)) |
217 | { | |
218 | delete *iter; | |
219 | notif_stop.queue.erase (iter); | |
220 | } | |
221 | } | |
bd99dc85 PA |
222 | } |
223 | ||
bd99dc85 | 224 | static void |
14a00470 | 225 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 226 | { |
14a00470 YQ |
227 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
228 | ||
c272a98c | 229 | prepare_resume_reply (own_buf, vstop->ptid, vstop->status); |
bd99dc85 PA |
230 | } |
231 | ||
b494cdff | 232 | /* Helper for in_queued_stop_replies. */ |
5a04c4cf | 233 | |
b494cdff TT |
234 | static bool |
235 | in_queued_stop_replies_ptid (struct notif_event *event, ptid_t filter_ptid) | |
5a04c4cf | 236 | { |
5a04c4cf PA |
237 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; |
238 | ||
26a57c92 | 239 | if (vstop_event->ptid.matches (filter_ptid)) |
b494cdff | 240 | return true; |
5a04c4cf PA |
241 | |
242 | /* Don't resume fork children that GDB does not know about yet. */ | |
183be222 SM |
243 | if ((vstop_event->status.kind () == TARGET_WAITKIND_FORKED |
244 | || vstop_event->status.kind () == TARGET_WAITKIND_VFORKED) | |
245 | && vstop_event->status.child_ptid ().matches (filter_ptid)) | |
b494cdff | 246 | return true; |
5a04c4cf | 247 | |
b494cdff | 248 | return false; |
5a04c4cf PA |
249 | } |
250 | ||
251 | /* See server.h. */ | |
252 | ||
253 | int | |
254 | in_queued_stop_replies (ptid_t ptid) | |
255 | { | |
b494cdff TT |
256 | for (notif_event *event : notif_stop.queue) |
257 | { | |
258 | if (in_queued_stop_replies_ptid (event, ptid)) | |
259 | return true; | |
260 | } | |
261 | ||
262 | return false; | |
5a04c4cf PA |
263 | } |
264 | ||
14a00470 YQ |
265 | struct notif_server notif_stop = |
266 | { | |
b494cdff | 267 | "vStopped", "Stop", {}, vstop_notif_reply, |
14a00470 YQ |
268 | }; |
269 | ||
2d717e4f DJ |
270 | static int |
271 | target_running (void) | |
272 | { | |
649ebbca | 273 | return get_first_thread () != NULL; |
2d717e4f DJ |
274 | } |
275 | ||
268a13a5 | 276 | /* See gdbsupport/common-inferior.h. */ |
ccd213ac | 277 | |
2090129c SDJ |
278 | const char * |
279 | get_exec_wrapper () | |
280 | { | |
281 | return !wrapper_argv.empty () ? wrapper_argv.c_str () : NULL; | |
282 | } | |
eb97750b | 283 | |
268a13a5 | 284 | /* See gdbsupport/common-inferior.h. */ |
eb97750b | 285 | |
d9fa87f4 | 286 | const char * |
2090129c SDJ |
287 | get_exec_file (int err) |
288 | { | |
25e3c82c | 289 | if (err && program_path.get () == NULL) |
2090129c | 290 | error (_("No executable file specified.")); |
ccd213ac | 291 | |
25e3c82c | 292 | return program_path.get (); |
2090129c | 293 | } |
5b1c542e | 294 | |
2090129c | 295 | /* See server.h. */ |
d20a8ad9 | 296 | |
9a6c7d9c | 297 | gdb_environ * |
2090129c SDJ |
298 | get_environ () |
299 | { | |
9a6c7d9c | 300 | return &our_environ; |
c906108c SS |
301 | } |
302 | ||
45b7b345 | 303 | static int |
5b1c542e | 304 | attach_inferior (int pid) |
45b7b345 | 305 | { |
c12a5089 | 306 | client_state &cs = get_client_state (); |
45b7b345 DJ |
307 | /* myattach should return -1 if attaching is unsupported, |
308 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 309 | |
df0da8a2 AH |
310 | if (find_process_pid (pid) != nullptr) |
311 | error ("Already attached to process %d\n", pid); | |
312 | ||
45b7b345 DJ |
313 | if (myattach (pid) != 0) |
314 | return -1; | |
315 | ||
6910d122 | 316 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 317 | fflush (stderr); |
6910d122 | 318 | |
a9fa9f7d DJ |
319 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
320 | attach function, so that it can be the main thread instead of | |
321 | whichever we were told to attach to. */ | |
322 | signal_pid = pid; | |
323 | ||
bd99dc85 PA |
324 | if (!non_stop) |
325 | { | |
f2907e49 | 326 | cs.last_ptid = mywait (ptid_t (pid), &cs.last_status, 0, 0); |
bd99dc85 PA |
327 | |
328 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
329 | process using the "attach" command, but this is different; it's | |
330 | just using "target remote". Pretend it's just starting up. */ | |
183be222 SM |
331 | if (cs.last_status.kind () == TARGET_WAITKIND_STOPPED |
332 | && cs.last_status.sig () == GDB_SIGNAL_STOP) | |
333 | cs.last_status.set_stopped (GDB_SIGNAL_TRAP); | |
d20a8ad9 | 334 | |
0bfdf32f | 335 | current_thread->last_resume_kind = resume_stop; |
c12a5089 | 336 | current_thread->last_status = cs.last_status; |
bd99dc85 | 337 | } |
9db87ebd | 338 | |
45b7b345 DJ |
339 | return 0; |
340 | } | |
341 | ||
0876f84a DJ |
342 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
343 | or -1 otherwise. */ | |
344 | ||
345 | static int | |
d08aafef | 346 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 347 | { |
d08aafef PA |
348 | /* After the read marker and annex, qXfer looks like a |
349 | traditional 'm' packet. */ | |
350 | decode_m_packet (buf, ofs, len); | |
351 | ||
352 | return 0; | |
353 | } | |
354 | ||
355 | static int | |
356 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
357 | { | |
358 | /* Extract and NUL-terminate the object. */ | |
359 | *object = buf; | |
360 | while (*buf && *buf != ':') | |
361 | buf++; | |
362 | if (*buf == '\0') | |
363 | return -1; | |
364 | *buf++ = 0; | |
365 | ||
366 | /* Extract and NUL-terminate the read/write action. */ | |
367 | *rw = buf; | |
368 | while (*buf && *buf != ':') | |
369 | buf++; | |
370 | if (*buf == '\0') | |
371 | return -1; | |
372 | *buf++ = 0; | |
373 | ||
0876f84a DJ |
374 | /* Extract and NUL-terminate the annex. */ |
375 | *annex = buf; | |
376 | while (*buf && *buf != ':') | |
377 | buf++; | |
378 | if (*buf == '\0') | |
379 | return -1; | |
380 | *buf++ = 0; | |
381 | ||
d08aafef | 382 | *offset = buf; |
0876f84a DJ |
383 | return 0; |
384 | } | |
385 | ||
386 | /* Write the response to a successful qXfer read. Returns the | |
387 | length of the (binary) data stored in BUF, corresponding | |
388 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
389 | the first character of the response. */ | |
390 | static int | |
f98cd059 | 391 | write_qxfer_response (char *buf, const gdb_byte *data, int len, int is_more) |
0876f84a DJ |
392 | { |
393 | int out_len; | |
394 | ||
395 | if (is_more) | |
396 | buf[0] = 'm'; | |
397 | else | |
398 | buf[0] = 'l'; | |
399 | ||
124e13d9 SM |
400 | return remote_escape_output (data, len, 1, (unsigned char *) buf + 1, |
401 | &out_len, PBUFSIZ - 2) + 1; | |
0876f84a DJ |
402 | } |
403 | ||
f4abbc16 | 404 | /* Handle btrace enabling in BTS format. */ |
9accd112 | 405 | |
9ee23a85 | 406 | static void |
f4abbc16 | 407 | handle_btrace_enable_bts (struct thread_info *thread) |
9accd112 MM |
408 | { |
409 | if (thread->btrace != NULL) | |
9ee23a85 | 410 | error (_("Btrace already enabled.")); |
9accd112 | 411 | |
f4abbc16 | 412 | current_btrace_conf.format = BTRACE_FORMAT_BTS; |
696c0d5e | 413 | thread->btrace = target_enable_btrace (thread, ¤t_btrace_conf); |
9accd112 MM |
414 | } |
415 | ||
bc504a31 | 416 | /* Handle btrace enabling in Intel Processor Trace format. */ |
b20a6524 | 417 | |
9ee23a85 | 418 | static void |
b20a6524 MM |
419 | handle_btrace_enable_pt (struct thread_info *thread) |
420 | { | |
421 | if (thread->btrace != NULL) | |
9ee23a85 | 422 | error (_("Btrace already enabled.")); |
b20a6524 MM |
423 | |
424 | current_btrace_conf.format = BTRACE_FORMAT_PT; | |
696c0d5e | 425 | thread->btrace = target_enable_btrace (thread, ¤t_btrace_conf); |
b20a6524 MM |
426 | } |
427 | ||
9accd112 MM |
428 | /* Handle btrace disabling. */ |
429 | ||
9ee23a85 | 430 | static void |
9accd112 MM |
431 | handle_btrace_disable (struct thread_info *thread) |
432 | { | |
433 | ||
434 | if (thread->btrace == NULL) | |
9ee23a85 | 435 | error (_("Branch tracing not enabled.")); |
9accd112 MM |
436 | |
437 | if (target_disable_btrace (thread->btrace) != 0) | |
9ee23a85 | 438 | error (_("Could not disable branch tracing.")); |
9accd112 MM |
439 | |
440 | thread->btrace = NULL; | |
9accd112 MM |
441 | } |
442 | ||
443 | /* Handle the "Qbtrace" packet. */ | |
444 | ||
445 | static int | |
446 | handle_btrace_general_set (char *own_buf) | |
447 | { | |
c12a5089 | 448 | client_state &cs = get_client_state (); |
9accd112 | 449 | struct thread_info *thread; |
9accd112 MM |
450 | char *op; |
451 | ||
61012eef | 452 | if (!startswith (own_buf, "Qbtrace:")) |
9accd112 MM |
453 | return 0; |
454 | ||
455 | op = own_buf + strlen ("Qbtrace:"); | |
456 | ||
d7e15655 TT |
457 | if (cs.general_thread == null_ptid |
458 | || cs.general_thread == minus_one_ptid) | |
9accd112 MM |
459 | { |
460 | strcpy (own_buf, "E.Must select a single thread."); | |
461 | return -1; | |
462 | } | |
463 | ||
c12a5089 | 464 | thread = find_thread_ptid (cs.general_thread); |
9accd112 MM |
465 | if (thread == NULL) |
466 | { | |
467 | strcpy (own_buf, "E.No such thread."); | |
468 | return -1; | |
469 | } | |
470 | ||
a70b8144 | 471 | try |
9ee23a85 MM |
472 | { |
473 | if (strcmp (op, "bts") == 0) | |
474 | handle_btrace_enable_bts (thread); | |
475 | else if (strcmp (op, "pt") == 0) | |
476 | handle_btrace_enable_pt (thread); | |
477 | else if (strcmp (op, "off") == 0) | |
478 | handle_btrace_disable (thread); | |
479 | else | |
480 | error (_("Bad Qbtrace operation. Use bts, pt, or off.")); | |
481 | ||
482 | write_ok (own_buf); | |
483 | } | |
230d2906 | 484 | catch (const gdb_exception_error &exception) |
9ee23a85 | 485 | { |
3d6e9d23 | 486 | sprintf (own_buf, "E.%s", exception.what ()); |
9ee23a85 | 487 | } |
9accd112 MM |
488 | |
489 | return 1; | |
490 | } | |
491 | ||
d33501a5 MM |
492 | /* Handle the "Qbtrace-conf" packet. */ |
493 | ||
494 | static int | |
495 | handle_btrace_conf_general_set (char *own_buf) | |
496 | { | |
c12a5089 | 497 | client_state &cs = get_client_state (); |
d33501a5 MM |
498 | struct thread_info *thread; |
499 | char *op; | |
500 | ||
61012eef | 501 | if (!startswith (own_buf, "Qbtrace-conf:")) |
d33501a5 MM |
502 | return 0; |
503 | ||
504 | op = own_buf + strlen ("Qbtrace-conf:"); | |
505 | ||
d7e15655 TT |
506 | if (cs.general_thread == null_ptid |
507 | || cs.general_thread == minus_one_ptid) | |
d33501a5 MM |
508 | { |
509 | strcpy (own_buf, "E.Must select a single thread."); | |
510 | return -1; | |
511 | } | |
512 | ||
c12a5089 | 513 | thread = find_thread_ptid (cs.general_thread); |
d33501a5 MM |
514 | if (thread == NULL) |
515 | { | |
516 | strcpy (own_buf, "E.No such thread."); | |
517 | return -1; | |
518 | } | |
519 | ||
61012eef | 520 | if (startswith (op, "bts:size=")) |
d33501a5 MM |
521 | { |
522 | unsigned long size; | |
523 | char *endp = NULL; | |
524 | ||
525 | errno = 0; | |
526 | size = strtoul (op + strlen ("bts:size="), &endp, 16); | |
527 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
528 | { | |
529 | strcpy (own_buf, "E.Bad size value."); | |
530 | return -1; | |
531 | } | |
532 | ||
533 | current_btrace_conf.bts.size = (unsigned int) size; | |
534 | } | |
b20a6524 MM |
535 | else if (strncmp (op, "pt:size=", strlen ("pt:size=")) == 0) |
536 | { | |
537 | unsigned long size; | |
538 | char *endp = NULL; | |
539 | ||
540 | errno = 0; | |
541 | size = strtoul (op + strlen ("pt:size="), &endp, 16); | |
542 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
543 | { | |
544 | strcpy (own_buf, "E.Bad size value."); | |
545 | return -1; | |
546 | } | |
547 | ||
548 | current_btrace_conf.pt.size = (unsigned int) size; | |
549 | } | |
d33501a5 MM |
550 | else |
551 | { | |
552 | strcpy (own_buf, "E.Bad Qbtrace configuration option."); | |
553 | return -1; | |
554 | } | |
555 | ||
556 | write_ok (own_buf); | |
557 | return 1; | |
558 | } | |
559 | ||
546b77fe LM |
560 | /* Create the qMemTags packet reply given TAGS. |
561 | ||
562 | Returns true if parsing succeeded and false otherwise. */ | |
563 | ||
564 | static bool | |
565 | create_fetch_memtags_reply (char *reply, const gdb::byte_vector &tags) | |
566 | { | |
567 | /* It is an error to pass a zero-sized tag vector. */ | |
568 | gdb_assert (tags.size () != 0); | |
569 | ||
570 | std::string packet ("m"); | |
571 | ||
572 | /* Write the tag data. */ | |
573 | packet += bin2hex (tags.data (), tags.size ()); | |
574 | ||
575 | /* Check if the reply is too big for the packet to handle. */ | |
576 | if (PBUFSIZ < packet.size ()) | |
577 | return false; | |
578 | ||
579 | strcpy (reply, packet.c_str ()); | |
580 | return true; | |
581 | } | |
582 | ||
583 | /* Parse the QMemTags request into ADDR, LEN and TAGS. | |
584 | ||
585 | Returns true if parsing succeeded and false otherwise. */ | |
586 | ||
587 | static bool | |
588 | parse_store_memtags_request (char *request, CORE_ADDR *addr, size_t *len, | |
589 | gdb::byte_vector &tags, int *type) | |
590 | { | |
591 | gdb_assert (startswith (request, "QMemTags:")); | |
592 | ||
593 | const char *p = request + strlen ("QMemTags:"); | |
594 | ||
595 | /* Read address and length. */ | |
596 | unsigned int length = 0; | |
597 | p = decode_m_packet_params (p, addr, &length, ':'); | |
598 | *len = length; | |
599 | ||
600 | /* Read the tag type. */ | |
601 | ULONGEST tag_type = 0; | |
602 | p = unpack_varlen_hex (p, &tag_type); | |
603 | *type = (int) tag_type; | |
604 | ||
605 | /* Make sure there is a colon after the type. */ | |
606 | if (*p != ':') | |
607 | return false; | |
608 | ||
609 | /* Skip the colon. */ | |
610 | p++; | |
611 | ||
612 | /* Read the tag data. */ | |
613 | tags = hex2bin (p); | |
614 | ||
615 | return true; | |
616 | } | |
617 | ||
89be2091 | 618 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
619 | |
620 | static void | |
89be2091 DJ |
621 | handle_general_set (char *own_buf) |
622 | { | |
c12a5089 | 623 | client_state &cs = get_client_state (); |
61012eef | 624 | if (startswith (own_buf, "QPassSignals:")) |
89be2091 | 625 | { |
a493e3e2 | 626 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
627 | const char *p = own_buf + strlen ("QPassSignals:"); |
628 | CORE_ADDR cursig; | |
629 | ||
630 | p = decode_address_to_semicolon (&cursig, p); | |
631 | for (i = 0; i < numsigs; i++) | |
632 | { | |
633 | if (i == cursig) | |
634 | { | |
c12a5089 | 635 | cs.pass_signals[i] = 1; |
89be2091 DJ |
636 | if (*p == '\0') |
637 | /* Keep looping, to clear the remaining signals. */ | |
638 | cursig = -1; | |
639 | else | |
640 | p = decode_address_to_semicolon (&cursig, p); | |
641 | } | |
642 | else | |
c12a5089 | 643 | cs.pass_signals[i] = 0; |
89be2091 DJ |
644 | } |
645 | strcpy (own_buf, "OK"); | |
646 | return; | |
647 | } | |
648 | ||
61012eef | 649 | if (startswith (own_buf, "QProgramSignals:")) |
9b224c5e | 650 | { |
a493e3e2 | 651 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
652 | const char *p = own_buf + strlen ("QProgramSignals:"); |
653 | CORE_ADDR cursig; | |
654 | ||
c12a5089 | 655 | cs.program_signals_p = 1; |
9b224c5e PA |
656 | |
657 | p = decode_address_to_semicolon (&cursig, p); | |
658 | for (i = 0; i < numsigs; i++) | |
659 | { | |
660 | if (i == cursig) | |
661 | { | |
c12a5089 | 662 | cs.program_signals[i] = 1; |
9b224c5e PA |
663 | if (*p == '\0') |
664 | /* Keep looping, to clear the remaining signals. */ | |
665 | cursig = -1; | |
666 | else | |
667 | p = decode_address_to_semicolon (&cursig, p); | |
668 | } | |
669 | else | |
c12a5089 | 670 | cs.program_signals[i] = 0; |
9b224c5e PA |
671 | } |
672 | strcpy (own_buf, "OK"); | |
673 | return; | |
674 | } | |
675 | ||
82075af2 JS |
676 | if (startswith (own_buf, "QCatchSyscalls:")) |
677 | { | |
678 | const char *p = own_buf + sizeof ("QCatchSyscalls:") - 1; | |
679 | int enabled = -1; | |
680 | CORE_ADDR sysno; | |
681 | struct process_info *process; | |
682 | ||
683 | if (!target_running () || !target_supports_catch_syscall ()) | |
684 | { | |
685 | write_enn (own_buf); | |
686 | return; | |
687 | } | |
688 | ||
689 | if (strcmp (p, "0") == 0) | |
690 | enabled = 0; | |
691 | else if (p[0] == '1' && (p[1] == ';' || p[1] == '\0')) | |
692 | enabled = 1; | |
693 | else | |
694 | { | |
695 | fprintf (stderr, "Unknown catch-syscalls mode requested: %s\n", | |
696 | own_buf); | |
697 | write_enn (own_buf); | |
698 | return; | |
699 | } | |
700 | ||
701 | process = current_process (); | |
f27866ba | 702 | process->syscalls_to_catch.clear (); |
82075af2 JS |
703 | |
704 | if (enabled) | |
705 | { | |
706 | p += 1; | |
707 | if (*p == ';') | |
708 | { | |
709 | p += 1; | |
710 | while (*p != '\0') | |
711 | { | |
712 | p = decode_address_to_semicolon (&sysno, p); | |
f27866ba | 713 | process->syscalls_to_catch.push_back (sysno); |
82075af2 JS |
714 | } |
715 | } | |
716 | else | |
f27866ba | 717 | process->syscalls_to_catch.push_back (ANY_SYSCALL); |
82075af2 JS |
718 | } |
719 | ||
720 | write_ok (own_buf); | |
721 | return; | |
722 | } | |
723 | ||
0a2dde4a SDJ |
724 | if (strcmp (own_buf, "QEnvironmentReset") == 0) |
725 | { | |
726 | our_environ = gdb_environ::from_host_environ (); | |
727 | ||
728 | write_ok (own_buf); | |
729 | return; | |
730 | } | |
731 | ||
732 | if (startswith (own_buf, "QEnvironmentHexEncoded:")) | |
733 | { | |
734 | const char *p = own_buf + sizeof ("QEnvironmentHexEncoded:") - 1; | |
735 | /* The final form of the environment variable. FINAL_VAR will | |
736 | hold the 'VAR=VALUE' format. */ | |
737 | std::string final_var = hex2str (p); | |
738 | std::string var_name, var_value; | |
739 | ||
91f94053 SM |
740 | remote_debug_printf ("[QEnvironmentHexEncoded received '%s']", p); |
741 | remote_debug_printf ("[Environment variable to be set: '%s']", | |
742 | final_var.c_str ()); | |
0a2dde4a SDJ |
743 | |
744 | size_t pos = final_var.find ('='); | |
745 | if (pos == std::string::npos) | |
746 | { | |
747 | warning (_("Unexpected format for environment variable: '%s'"), | |
748 | final_var.c_str ()); | |
749 | write_enn (own_buf); | |
750 | return; | |
751 | } | |
752 | ||
753 | var_name = final_var.substr (0, pos); | |
754 | var_value = final_var.substr (pos + 1, std::string::npos); | |
755 | ||
756 | our_environ.set (var_name.c_str (), var_value.c_str ()); | |
757 | ||
758 | write_ok (own_buf); | |
759 | return; | |
760 | } | |
761 | ||
762 | if (startswith (own_buf, "QEnvironmentUnset:")) | |
763 | { | |
764 | const char *p = own_buf + sizeof ("QEnvironmentUnset:") - 1; | |
765 | std::string varname = hex2str (p); | |
766 | ||
91f94053 SM |
767 | remote_debug_printf ("[QEnvironmentUnset received '%s']", p); |
768 | remote_debug_printf ("[Environment variable to be unset: '%s']", | |
769 | varname.c_str ()); | |
0a2dde4a SDJ |
770 | |
771 | our_environ.unset (varname.c_str ()); | |
772 | ||
773 | write_ok (own_buf); | |
774 | return; | |
775 | } | |
776 | ||
a6f3e723 SL |
777 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
778 | { | |
91f94053 | 779 | remote_debug_printf ("[noack mode enabled]"); |
a6f3e723 | 780 | |
c12a5089 | 781 | cs.noack_mode = 1; |
a6f3e723 SL |
782 | write_ok (own_buf); |
783 | return; | |
784 | } | |
785 | ||
61012eef | 786 | if (startswith (own_buf, "QNonStop:")) |
bd99dc85 PA |
787 | { |
788 | char *mode = own_buf + 9; | |
789 | int req = -1; | |
b2333d22 | 790 | const char *req_str; |
bd99dc85 PA |
791 | |
792 | if (strcmp (mode, "0") == 0) | |
793 | req = 0; | |
794 | else if (strcmp (mode, "1") == 0) | |
795 | req = 1; | |
796 | else | |
797 | { | |
798 | /* We don't know what this mode is, so complain to | |
799 | GDB. */ | |
800 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
801 | own_buf); | |
802 | write_enn (own_buf); | |
803 | return; | |
804 | } | |
805 | ||
806 | req_str = req ? "non-stop" : "all-stop"; | |
52405d85 | 807 | if (the_target->start_non_stop (req == 1) != 0) |
bd99dc85 PA |
808 | { |
809 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
810 | write_enn (own_buf); | |
811 | return; | |
812 | } | |
813 | ||
3e6ec53a | 814 | non_stop = (req != 0); |
bd99dc85 | 815 | |
91f94053 | 816 | remote_debug_printf ("[%s mode enabled]", req_str); |
bd99dc85 PA |
817 | |
818 | write_ok (own_buf); | |
819 | return; | |
820 | } | |
821 | ||
61012eef | 822 | if (startswith (own_buf, "QDisableRandomization:")) |
03583c20 UW |
823 | { |
824 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
825 | ULONGEST setting; | |
826 | ||
827 | unpack_varlen_hex (packet, &setting); | |
c12a5089 | 828 | cs.disable_randomization = setting; |
03583c20 | 829 | |
91f94053 SM |
830 | remote_debug_printf (cs.disable_randomization |
831 | ? "[address space randomization disabled]" | |
832 | : "[address space randomization enabled]"); | |
03583c20 UW |
833 | |
834 | write_ok (own_buf); | |
835 | return; | |
836 | } | |
837 | ||
219f2f23 PA |
838 | if (target_supports_tracepoints () |
839 | && handle_tracepoint_general_set (own_buf)) | |
840 | return; | |
841 | ||
61012eef | 842 | if (startswith (own_buf, "QAgent:")) |
d1feda86 YQ |
843 | { |
844 | char *mode = own_buf + strlen ("QAgent:"); | |
845 | int req = 0; | |
846 | ||
847 | if (strcmp (mode, "0") == 0) | |
848 | req = 0; | |
849 | else if (strcmp (mode, "1") == 0) | |
850 | req = 1; | |
851 | else | |
852 | { | |
853 | /* We don't know what this value is, so complain to GDB. */ | |
854 | sprintf (own_buf, "E.Unknown QAgent value"); | |
855 | return; | |
856 | } | |
857 | ||
858 | /* Update the flag. */ | |
859 | use_agent = req; | |
91f94053 | 860 | remote_debug_printf ("[%s agent]", req ? "Enable" : "Disable"); |
d1feda86 YQ |
861 | write_ok (own_buf); |
862 | return; | |
863 | } | |
864 | ||
9accd112 MM |
865 | if (handle_btrace_general_set (own_buf)) |
866 | return; | |
867 | ||
d33501a5 MM |
868 | if (handle_btrace_conf_general_set (own_buf)) |
869 | return; | |
870 | ||
65706a29 PA |
871 | if (startswith (own_buf, "QThreadEvents:")) |
872 | { | |
873 | char *mode = own_buf + strlen ("QThreadEvents:"); | |
874 | enum tribool req = TRIBOOL_UNKNOWN; | |
875 | ||
876 | if (strcmp (mode, "0") == 0) | |
877 | req = TRIBOOL_FALSE; | |
878 | else if (strcmp (mode, "1") == 0) | |
879 | req = TRIBOOL_TRUE; | |
880 | else | |
881 | { | |
65706a29 | 882 | /* We don't know what this mode is, so complain to GDB. */ |
4dbe16c8 SM |
883 | std::string err |
884 | = string_printf ("E.Unknown thread-events mode requested: %s\n", | |
885 | mode); | |
886 | strcpy (own_buf, err.c_str ()); | |
65706a29 PA |
887 | return; |
888 | } | |
889 | ||
c12a5089 | 890 | cs.report_thread_events = (req == TRIBOOL_TRUE); |
65706a29 | 891 | |
91f94053 SM |
892 | remote_debug_printf ("[thread events are now %s]\n", |
893 | cs.report_thread_events ? "enabled" : "disabled"); | |
65706a29 PA |
894 | |
895 | write_ok (own_buf); | |
896 | return; | |
897 | } | |
898 | ||
aefd8b33 SDJ |
899 | if (startswith (own_buf, "QStartupWithShell:")) |
900 | { | |
901 | const char *value = own_buf + strlen ("QStartupWithShell:"); | |
902 | ||
903 | if (strcmp (value, "1") == 0) | |
904 | startup_with_shell = true; | |
905 | else if (strcmp (value, "0") == 0) | |
906 | startup_with_shell = false; | |
907 | else | |
908 | { | |
909 | /* Unknown value. */ | |
910 | fprintf (stderr, "Unknown value to startup-with-shell: %s\n", | |
911 | own_buf); | |
912 | write_enn (own_buf); | |
913 | return; | |
914 | } | |
915 | ||
91f94053 SM |
916 | remote_debug_printf ("[Inferior will %s started with shell]", |
917 | startup_with_shell ? "be" : "not be"); | |
aefd8b33 SDJ |
918 | |
919 | write_ok (own_buf); | |
920 | return; | |
921 | } | |
922 | ||
bc3b087d SDJ |
923 | if (startswith (own_buf, "QSetWorkingDir:")) |
924 | { | |
925 | const char *p = own_buf + strlen ("QSetWorkingDir:"); | |
926 | ||
927 | if (*p != '\0') | |
928 | { | |
929 | std::string path = hex2str (p); | |
930 | ||
91f94053 SM |
931 | remote_debug_printf ("[Set the inferior's current directory to %s]", |
932 | path.c_str ()); | |
11bd012e SM |
933 | |
934 | set_inferior_cwd (std::move (path)); | |
bc3b087d SDJ |
935 | } |
936 | else | |
937 | { | |
938 | /* An empty argument means that we should clear out any | |
939 | previously set cwd for the inferior. */ | |
11bd012e | 940 | set_inferior_cwd (""); |
bc3b087d | 941 | |
91f94053 SM |
942 | remote_debug_printf ("[Unset the inferior's current directory; will " |
943 | "use gdbserver's cwd]"); | |
bc3b087d SDJ |
944 | } |
945 | write_ok (own_buf); | |
946 | ||
947 | return; | |
948 | } | |
949 | ||
546b77fe LM |
950 | |
951 | /* Handle store memory tags packets. */ | |
952 | if (startswith (own_buf, "QMemTags:") | |
953 | && target_supports_memory_tagging ()) | |
954 | { | |
955 | gdb::byte_vector tags; | |
956 | CORE_ADDR addr = 0; | |
957 | size_t len = 0; | |
958 | int type = 0; | |
959 | ||
960 | require_running_or_return (own_buf); | |
961 | ||
782c1ab8 | 962 | bool ret = parse_store_memtags_request (own_buf, &addr, &len, tags, |
546b77fe LM |
963 | &type); |
964 | ||
782c1ab8 | 965 | if (ret) |
546b77fe LM |
966 | ret = the_target->store_memtags (addr, len, tags, type); |
967 | ||
782c1ab8 | 968 | if (!ret) |
546b77fe LM |
969 | write_enn (own_buf); |
970 | else | |
971 | write_ok (own_buf); | |
972 | ||
973 | return; | |
974 | } | |
975 | ||
89be2091 DJ |
976 | /* Otherwise we didn't know what packet it was. Say we didn't |
977 | understand it. */ | |
978 | own_buf[0] = 0; | |
979 | } | |
980 | ||
23181151 | 981 | static const char * |
fb1e4ffc | 982 | get_features_xml (const char *annex) |
23181151 | 983 | { |
3aee8918 PA |
984 | const struct target_desc *desc = current_target_desc (); |
985 | ||
986 | /* `desc->xmltarget' defines what to return when looking for the | |
987 | "target.xml" file. Its contents can either be verbatim XML code | |
988 | (prefixed with a '@') or else the name of the actual XML file to | |
989 | be used in place of "target.xml". | |
fb1e4ffc | 990 | |
9b4b61c8 UW |
991 | This variable is set up from the auto-generated |
992 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 993 | |
0abe8a89 | 994 | if (strcmp (annex, "target.xml") == 0) |
23181151 | 995 | { |
e98577a9 | 996 | const char *ret = tdesc_get_features_xml (desc); |
0abe8a89 YQ |
997 | |
998 | if (*ret == '@') | |
999 | return ret + 1; | |
23181151 | 1000 | else |
0abe8a89 | 1001 | annex = ret; |
23181151 DJ |
1002 | } |
1003 | ||
9b4b61c8 UW |
1004 | #ifdef USE_XML |
1005 | { | |
9b4b61c8 UW |
1006 | int i; |
1007 | ||
1008 | /* Look for the annex. */ | |
1009 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
1010 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
1011 | break; | |
1012 | ||
1013 | if (xml_builtin[i][0] != NULL) | |
1014 | return xml_builtin[i][1]; | |
1015 | } | |
1016 | #endif | |
1017 | ||
1018 | return NULL; | |
23181151 DJ |
1019 | } |
1020 | ||
5b3da067 | 1021 | static void |
c74d0ad8 DJ |
1022 | monitor_show_help (void) |
1023 | { | |
1024 | monitor_output ("The following monitor commands are supported:\n"); | |
1025 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 1026 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
1027 | monitor_output (" set debug-hw-points <0|1>\n"); |
1028 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
1029 | monitor_output (" set remote-debug <0|1>\n"); |
1030 | monitor_output (" Enable remote protocol debugging messages\n"); | |
6b01403b SM |
1031 | monitor_output (" set event-loop-debug <0|1>\n"); |
1032 | monitor_output (" Enable event loop debugging messages\n"); | |
87ce2a04 DE |
1033 | monitor_output (" set debug-format option1[,option2,...]\n"); |
1034 | monitor_output (" Add additional information to debugging messages\n"); | |
1035 | monitor_output (" Options: all, none"); | |
87ce2a04 | 1036 | monitor_output (", timestamp"); |
87ce2a04 | 1037 | monitor_output ("\n"); |
ecd7ecbc DJ |
1038 | monitor_output (" exit\n"); |
1039 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
1040 | } |
1041 | ||
764880b7 PA |
1042 | /* Read trace frame or inferior memory. Returns the number of bytes |
1043 | actually read, zero when no further transfer is possible, and -1 on | |
1044 | error. Return of a positive value smaller than LEN does not | |
1045 | indicate there's no more to be read, only the end of the transfer. | |
1046 | E.g., when GDB reads memory from a traceframe, a first request may | |
1047 | be served from a memory block that does not cover the whole request | |
1048 | length. A following request gets the rest served from either | |
1049 | another block (of the same traceframe) or from the read-only | |
1050 | regions. */ | |
219f2f23 PA |
1051 | |
1052 | static int | |
90d74c30 | 1053 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 1054 | { |
c12a5089 | 1055 | client_state &cs = get_client_state (); |
764880b7 | 1056 | int res; |
90d74c30 | 1057 | |
c12a5089 | 1058 | if (cs.current_traceframe >= 0) |
219f2f23 PA |
1059 | { |
1060 | ULONGEST nbytes; | |
1061 | ULONGEST length = len; | |
1062 | ||
c12a5089 | 1063 | if (traceframe_read_mem (cs.current_traceframe, |
219f2f23 | 1064 | memaddr, myaddr, len, &nbytes)) |
9a13b2fa | 1065 | return -1; |
219f2f23 | 1066 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
1067 | if (nbytes > 0) |
1068 | return nbytes; | |
219f2f23 | 1069 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 1070 | return -1; |
219f2f23 PA |
1071 | /* Otherwise we have a valid readonly case, fall through. */ |
1072 | /* (assume no half-trace half-real blocks for now) */ | |
1073 | } | |
1074 | ||
7f8acede | 1075 | if (set_desired_process ()) |
8e347faf | 1076 | res = read_inferior_memory (memaddr, myaddr, len); |
764880b7 | 1077 | else |
8e347faf PA |
1078 | res = 1; |
1079 | ||
1080 | return res == 0 ? len : -1; | |
219f2f23 PA |
1081 | } |
1082 | ||
1083 | /* Write trace frame or inferior memory. Actually, writing to trace | |
1084 | frames is forbidden. */ | |
1085 | ||
1086 | static int | |
90d74c30 | 1087 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 | 1088 | { |
c12a5089 SC |
1089 | client_state &cs = get_client_state (); |
1090 | if (cs.current_traceframe >= 0) | |
219f2f23 PA |
1091 | return EIO; |
1092 | else | |
90d74c30 PA |
1093 | { |
1094 | int ret; | |
1095 | ||
7f8acede | 1096 | if (set_desired_process ()) |
8e347faf PA |
1097 | ret = target_write_memory (memaddr, myaddr, len); |
1098 | else | |
1099 | ret = EIO; | |
90d74c30 PA |
1100 | return ret; |
1101 | } | |
219f2f23 PA |
1102 | } |
1103 | ||
08388c79 DE |
1104 | /* Handle qSearch:memory packets. */ |
1105 | ||
1106 | static void | |
1107 | handle_search_memory (char *own_buf, int packet_len) | |
1108 | { | |
1109 | CORE_ADDR start_addr; | |
1110 | CORE_ADDR search_space_len; | |
1111 | gdb_byte *pattern; | |
1112 | unsigned int pattern_len; | |
08388c79 DE |
1113 | int found; |
1114 | CORE_ADDR found_addr; | |
1115 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
1116 | ||
224c3ddb | 1117 | pattern = (gdb_byte *) malloc (packet_len); |
08388c79 | 1118 | if (pattern == NULL) |
60b74662 TT |
1119 | error ("Unable to allocate memory to perform the search"); |
1120 | ||
08388c79 DE |
1121 | if (decode_search_memory_packet (own_buf + cmd_name_len, |
1122 | packet_len - cmd_name_len, | |
1123 | &start_addr, &search_space_len, | |
1124 | pattern, &pattern_len) < 0) | |
1125 | { | |
1126 | free (pattern); | |
5e1471f5 | 1127 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
1128 | } |
1129 | ||
55b10d89 | 1130 | auto read_memory = [] (CORE_ADDR addr, gdb_byte *result, size_t len) |
08388c79 | 1131 | { |
55b10d89 TT |
1132 | return gdb_read_memory (addr, result, len) == len; |
1133 | }; | |
08388c79 | 1134 | |
55b10d89 TT |
1135 | found = simple_search_memory (read_memory, start_addr, search_space_len, |
1136 | pattern, pattern_len, &found_addr); | |
08388c79 DE |
1137 | |
1138 | if (found > 0) | |
1139 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
1140 | else if (found == 0) | |
1141 | strcpy (own_buf, "0"); | |
1142 | else | |
1143 | strcpy (own_buf, "E00"); | |
1144 | ||
08388c79 DE |
1145 | free (pattern); |
1146 | } | |
1147 | ||
e8ca139e SM |
1148 | /* Handle the "D" packet. */ |
1149 | ||
1150 | static void | |
1151 | handle_detach (char *own_buf) | |
1152 | { | |
c12a5089 | 1153 | client_state &cs = get_client_state (); |
e8ca139e | 1154 | |
31445d10 | 1155 | process_info *process; |
e8ca139e | 1156 | |
c12a5089 | 1157 | if (cs.multi_process) |
e8ca139e SM |
1158 | { |
1159 | /* skip 'D;' */ | |
31445d10 PA |
1160 | int pid = strtol (&own_buf[2], NULL, 16); |
1161 | ||
1162 | process = find_process_pid (pid); | |
e8ca139e SM |
1163 | } |
1164 | else | |
e8ca139e | 1165 | { |
31445d10 PA |
1166 | process = (current_thread != nullptr |
1167 | ? get_thread_process (current_thread) | |
1168 | : nullptr); | |
1169 | } | |
e8ca139e | 1170 | |
31445d10 PA |
1171 | if (process == NULL) |
1172 | { | |
1173 | write_enn (own_buf); | |
1174 | return; | |
1175 | } | |
e8ca139e | 1176 | |
31445d10 PA |
1177 | if ((tracing && disconnected_tracing) || any_persistent_commands (process)) |
1178 | { | |
e8ca139e SM |
1179 | if (tracing && disconnected_tracing) |
1180 | fprintf (stderr, | |
1181 | "Disconnected tracing in effect, " | |
1182 | "leaving gdbserver attached to the process\n"); | |
1183 | ||
31445d10 | 1184 | if (any_persistent_commands (process)) |
e8ca139e SM |
1185 | fprintf (stderr, |
1186 | "Persistent commands are present, " | |
1187 | "leaving gdbserver attached to the process\n"); | |
1188 | ||
1189 | /* Make sure we're in non-stop/async mode, so we we can both | |
1190 | wait for an async socket accept, and handle async target | |
1191 | events simultaneously. There's also no point either in | |
1192 | having the target stop all threads, when we're going to | |
1193 | pass signals down without informing GDB. */ | |
1194 | if (!non_stop) | |
1195 | { | |
c058728c | 1196 | threads_debug_printf ("Forcing non-stop mode"); |
e8ca139e | 1197 | |
3e6ec53a | 1198 | non_stop = true; |
52405d85 | 1199 | the_target->start_non_stop (true); |
e8ca139e SM |
1200 | } |
1201 | ||
1202 | process->gdb_detached = 1; | |
1203 | ||
1204 | /* Detaching implicitly resumes all threads. */ | |
1205 | target_continue_no_signal (minus_one_ptid); | |
1206 | ||
1207 | write_ok (own_buf); | |
1208 | return; | |
1209 | } | |
1210 | ||
31445d10 | 1211 | fprintf (stderr, "Detaching from process %d\n", process->pid); |
e8ca139e | 1212 | stop_tracing (); |
d105de22 TT |
1213 | |
1214 | /* We'll need this after PROCESS has been destroyed. */ | |
1215 | int pid = process->pid; | |
1216 | ||
df5ad102 SM |
1217 | /* If this process has an unreported fork child, that child is not known to |
1218 | GDB, so GDB won't take care of detaching it. We must do it here. | |
1219 | ||
1220 | Here, we specifically don't want to use "safe iteration", as detaching | |
1221 | another process might delete the next thread in the iteration, which is | |
1222 | the one saved by the safe iterator. We will never delete the currently | |
1223 | iterated on thread, so standard iteration should be safe. */ | |
1224 | for (thread_info *thread : all_threads) | |
1225 | { | |
1226 | /* Only threads that are of the process we are detaching. */ | |
1227 | if (thread->id.pid () != pid) | |
1228 | continue; | |
1229 | ||
1230 | /* Only threads that have a pending fork event. */ | |
1231 | thread_info *child = target_thread_pending_child (thread); | |
1232 | if (child == nullptr) | |
1233 | continue; | |
1234 | ||
1235 | process_info *fork_child_process = get_thread_process (child); | |
1236 | gdb_assert (fork_child_process != nullptr); | |
1237 | ||
1238 | int fork_child_pid = fork_child_process->pid; | |
1239 | ||
1240 | if (detach_inferior (fork_child_process) != 0) | |
1241 | warning (_("Failed to detach fork child %s, child of %s"), | |
1242 | target_pid_to_str (ptid_t (fork_child_pid)).c_str (), | |
1243 | target_pid_to_str (thread->id).c_str ()); | |
1244 | } | |
1245 | ||
ef2ddb33 | 1246 | if (detach_inferior (process) != 0) |
e8ca139e SM |
1247 | write_enn (own_buf); |
1248 | else | |
1249 | { | |
d105de22 | 1250 | discard_queued_stop_replies (ptid_t (pid)); |
e8ca139e SM |
1251 | write_ok (own_buf); |
1252 | ||
1253 | if (extended_protocol || target_running ()) | |
1254 | { | |
1255 | /* There is still at least one inferior remaining or | |
1256 | we are in extended mode, so don't terminate gdbserver, | |
1257 | and instead treat this like a normal program exit. */ | |
183be222 | 1258 | cs.last_status.set_exited (0); |
d105de22 | 1259 | cs.last_ptid = ptid_t (pid); |
e8ca139e | 1260 | |
24583e45 | 1261 | switch_to_thread (nullptr); |
e8ca139e SM |
1262 | } |
1263 | else | |
1264 | { | |
1265 | putpkt (own_buf); | |
1266 | remote_close (); | |
1267 | ||
1268 | /* If we are attached, then we can exit. Otherwise, we | |
1269 | need to hang around doing nothing, until the child is | |
1270 | gone. */ | |
d105de22 | 1271 | join_inferior (pid); |
e8ca139e SM |
1272 | exit (0); |
1273 | } | |
1274 | } | |
1275 | } | |
1276 | ||
87ce2a04 DE |
1277 | /* Parse options to --debug-format= and "monitor set debug-format". |
1278 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
1279 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
1280 | This triggers calls to monitor_output. | |
e80aaf61 SM |
1281 | The result is an empty string if all options were parsed ok, otherwise an |
1282 | error message which the caller must free. | |
87ce2a04 DE |
1283 | |
1284 | N.B. These commands affect all debug format settings, they are not | |
1285 | cumulative. If a format is not specified, it is turned off. | |
1286 | However, we don't go to extra trouble with things like | |
1287 | "monitor set debug-format all,none,timestamp". | |
1288 | Instead we just parse them one at a time, in order. | |
1289 | ||
1290 | The syntax for "monitor set debug" we support here is not identical | |
1291 | to gdb's "set debug foo on|off" because we also use this function to | |
1292 | parse "--debug-format=foo,bar". */ | |
1293 | ||
2cc05030 | 1294 | static std::string |
87ce2a04 DE |
1295 | parse_debug_format_options (const char *arg, int is_monitor) |
1296 | { | |
87ce2a04 DE |
1297 | /* First turn all debug format options off. */ |
1298 | debug_timestamp = 0; | |
1299 | ||
1300 | /* First remove leading spaces, for "monitor set debug-format". */ | |
1301 | while (isspace (*arg)) | |
1302 | ++arg; | |
1303 | ||
e80aaf61 SM |
1304 | std::vector<gdb::unique_xmalloc_ptr<char>> options |
1305 | = delim_string_to_char_ptr_vec (arg, ','); | |
87ce2a04 | 1306 | |
e80aaf61 | 1307 | for (const gdb::unique_xmalloc_ptr<char> &option : options) |
87ce2a04 | 1308 | { |
e80aaf61 | 1309 | if (strcmp (option.get (), "all") == 0) |
87ce2a04 DE |
1310 | { |
1311 | debug_timestamp = 1; | |
1312 | if (is_monitor) | |
1313 | monitor_output ("All extra debug format options enabled.\n"); | |
1314 | } | |
e80aaf61 | 1315 | else if (strcmp (option.get (), "none") == 0) |
87ce2a04 DE |
1316 | { |
1317 | debug_timestamp = 0; | |
1318 | if (is_monitor) | |
1319 | monitor_output ("All extra debug format options disabled.\n"); | |
1320 | } | |
e80aaf61 | 1321 | else if (strcmp (option.get (), "timestamp") == 0) |
87ce2a04 DE |
1322 | { |
1323 | debug_timestamp = 1; | |
1324 | if (is_monitor) | |
1325 | monitor_output ("Timestamps will be added to debug output.\n"); | |
1326 | } | |
87ce2a04 DE |
1327 | else if (*option == '\0') |
1328 | { | |
1329 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
1330 | continue; | |
1331 | } | |
1332 | else | |
e80aaf61 SM |
1333 | return string_printf ("Unknown debug-format argument: \"%s\"\n", |
1334 | option.get ()); | |
87ce2a04 DE |
1335 | } |
1336 | ||
2cc05030 | 1337 | return std::string (); |
87ce2a04 DE |
1338 | } |
1339 | ||
cdbfd419 PP |
1340 | /* Handle monitor commands not handled by target-specific handlers. */ |
1341 | ||
1342 | static void | |
d73f2619 | 1343 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
1344 | { |
1345 | if (strcmp (mon, "set debug 1") == 0) | |
1346 | { | |
c68665c7 | 1347 | debug_threads = true; |
cdbfd419 PP |
1348 | monitor_output ("Debug output enabled.\n"); |
1349 | } | |
1350 | else if (strcmp (mon, "set debug 0") == 0) | |
1351 | { | |
c68665c7 | 1352 | debug_threads = false; |
cdbfd419 PP |
1353 | monitor_output ("Debug output disabled.\n"); |
1354 | } | |
1355 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
1356 | { | |
c5e92cca | 1357 | show_debug_regs = 1; |
cdbfd419 PP |
1358 | monitor_output ("H/W point debugging output enabled.\n"); |
1359 | } | |
1360 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1361 | { | |
c5e92cca | 1362 | show_debug_regs = 0; |
cdbfd419 PP |
1363 | monitor_output ("H/W point debugging output disabled.\n"); |
1364 | } | |
1365 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1366 | { | |
91f94053 | 1367 | remote_debug = true; |
cdbfd419 PP |
1368 | monitor_output ("Protocol debug output enabled.\n"); |
1369 | } | |
1370 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1371 | { | |
91f94053 | 1372 | remote_debug = false; |
cdbfd419 PP |
1373 | monitor_output ("Protocol debug output disabled.\n"); |
1374 | } | |
6b01403b SM |
1375 | else if (strcmp (mon, "set event-loop-debug 1") == 0) |
1376 | { | |
1377 | debug_event_loop = debug_event_loop_kind::ALL; | |
1378 | monitor_output ("Event loop debug output enabled.\n"); | |
1379 | } | |
1380 | else if (strcmp (mon, "set event-loop-debug 0") == 0) | |
1381 | { | |
1382 | debug_event_loop = debug_event_loop_kind::OFF; | |
1383 | monitor_output ("Event loop debug output disabled.\n"); | |
1384 | } | |
61012eef | 1385 | else if (startswith (mon, "set debug-format ")) |
87ce2a04 | 1386 | { |
2cc05030 | 1387 | std::string error_msg |
87ce2a04 DE |
1388 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, |
1389 | 1); | |
1390 | ||
2cc05030 | 1391 | if (!error_msg.empty ()) |
87ce2a04 | 1392 | { |
2cc05030 | 1393 | monitor_output (error_msg.c_str ()); |
87ce2a04 DE |
1394 | monitor_show_help (); |
1395 | write_enn (own_buf); | |
87ce2a04 DE |
1396 | } |
1397 | } | |
aeb2e706 AH |
1398 | else if (strcmp (mon, "set debug-file") == 0) |
1399 | debug_set_output (nullptr); | |
1400 | else if (startswith (mon, "set debug-file ")) | |
1401 | debug_set_output (mon + sizeof ("set debug-file ") - 1); | |
cdbfd419 PP |
1402 | else if (strcmp (mon, "help") == 0) |
1403 | monitor_show_help (); | |
1404 | else if (strcmp (mon, "exit") == 0) | |
3e6ec53a | 1405 | exit_requested = true; |
cdbfd419 PP |
1406 | else |
1407 | { | |
1408 | monitor_output ("Unknown monitor command.\n\n"); | |
1409 | monitor_show_help (); | |
1410 | write_enn (own_buf); | |
1411 | } | |
1412 | } | |
1413 | ||
d08aafef PA |
1414 | /* Associates a callback with each supported qXfer'able object. */ |
1415 | ||
1416 | struct qxfer | |
1417 | { | |
1418 | /* The object this handler handles. */ | |
1419 | const char *object; | |
1420 | ||
1421 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1422 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1423 | the starting point. The ANNEX can be used to provide additional | |
1424 | data-specific information to the target. | |
1425 | ||
1426 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1427 | further transfer is possible, -1 on error, -2 when the transfer |
1428 | is not supported, and -3 on a verbose error message that should | |
1429 | be preserved. Return of a positive value smaller than LEN does | |
1430 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1431 | |
1432 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1433 | int (*xfer) (const char *annex, | |
1434 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1435 | ULONGEST offset, LONGEST len); | |
1436 | }; | |
1437 | ||
1438 | /* Handle qXfer:auxv:read. */ | |
1439 | ||
1440 | static int | |
1441 | handle_qxfer_auxv (const char *annex, | |
1442 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1443 | ULONGEST offset, LONGEST len) | |
1444 | { | |
52405d85 | 1445 | if (!the_target->supports_read_auxv () || writebuf != NULL) |
d08aafef PA |
1446 | return -2; |
1447 | ||
f0db101d | 1448 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1449 | return -1; |
1450 | ||
43e5fbd8 TJB |
1451 | return the_target->read_auxv (current_thread->id.pid (), offset, readbuf, |
1452 | len); | |
d08aafef PA |
1453 | } |
1454 | ||
e57f1de3 GB |
1455 | /* Handle qXfer:exec-file:read. */ |
1456 | ||
1457 | static int | |
256642e8 | 1458 | handle_qxfer_exec_file (const char *annex, |
e57f1de3 GB |
1459 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1460 | ULONGEST offset, LONGEST len) | |
1461 | { | |
e57f1de3 GB |
1462 | ULONGEST pid; |
1463 | int total_len; | |
1464 | ||
52405d85 | 1465 | if (!the_target->supports_pid_to_exec_file () || writebuf != NULL) |
e57f1de3 GB |
1466 | return -2; |
1467 | ||
256642e8 | 1468 | if (annex[0] == '\0') |
835205d0 GB |
1469 | { |
1470 | if (current_thread == NULL) | |
1471 | return -1; | |
1472 | ||
1473 | pid = pid_of (current_thread); | |
1474 | } | |
1475 | else | |
1476 | { | |
835205d0 | 1477 | annex = unpack_varlen_hex (annex, &pid); |
835205d0 GB |
1478 | if (annex[0] != '\0') |
1479 | return -1; | |
1480 | } | |
1481 | ||
1482 | if (pid <= 0) | |
e57f1de3 GB |
1483 | return -1; |
1484 | ||
04977957 | 1485 | const char *file = the_target->pid_to_exec_file (pid); |
e57f1de3 GB |
1486 | if (file == NULL) |
1487 | return -1; | |
1488 | ||
1489 | total_len = strlen (file); | |
1490 | ||
1491 | if (offset > total_len) | |
1492 | return -1; | |
1493 | ||
1494 | if (offset + len > total_len) | |
1495 | len = total_len - offset; | |
1496 | ||
1497 | memcpy (readbuf, file + offset, len); | |
1498 | return len; | |
1499 | } | |
1500 | ||
d08aafef PA |
1501 | /* Handle qXfer:features:read. */ |
1502 | ||
1503 | static int | |
1504 | handle_qxfer_features (const char *annex, | |
1505 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1506 | ULONGEST offset, LONGEST len) | |
1507 | { | |
1508 | const char *document; | |
1509 | size_t total_len; | |
1510 | ||
1511 | if (writebuf != NULL) | |
1512 | return -2; | |
1513 | ||
1514 | if (!target_running ()) | |
1515 | return -1; | |
1516 | ||
1517 | /* Grab the correct annex. */ | |
1518 | document = get_features_xml (annex); | |
1519 | if (document == NULL) | |
1520 | return -1; | |
1521 | ||
1522 | total_len = strlen (document); | |
1523 | ||
1524 | if (offset > total_len) | |
1525 | return -1; | |
1526 | ||
1527 | if (offset + len > total_len) | |
1528 | len = total_len - offset; | |
1529 | ||
1530 | memcpy (readbuf, document + offset, len); | |
1531 | return len; | |
1532 | } | |
1533 | ||
1534 | /* Handle qXfer:libraries:read. */ | |
1535 | ||
1536 | static int | |
1537 | handle_qxfer_libraries (const char *annex, | |
1538 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1539 | ULONGEST offset, LONGEST len) | |
1540 | { | |
d08aafef PA |
1541 | if (writebuf != NULL) |
1542 | return -2; | |
1543 | ||
f0db101d | 1544 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1545 | return -1; |
1546 | ||
04fd3ba9 | 1547 | std::string document = "<library-list version=\"1.0\">\n"; |
d08aafef | 1548 | |
d171632f TBA |
1549 | process_info *proc = current_process (); |
1550 | for (const dll_info &dll : proc->all_dlls) | |
c9cb8905 | 1551 | document += string_printf |
a2236a08 HD |
1552 | (" <library name=\"%s\"><segment address=\"0x%s\"/></library>\n", |
1553 | dll.name.c_str (), paddress (dll.base_addr)); | |
d08aafef | 1554 | |
04fd3ba9 | 1555 | document += "</library-list>\n"; |
d08aafef | 1556 | |
04fd3ba9 SM |
1557 | if (offset > document.length ()) |
1558 | return -1; | |
d08aafef | 1559 | |
04fd3ba9 SM |
1560 | if (offset + len > document.length ()) |
1561 | len = document.length () - offset; | |
d08aafef | 1562 | |
04fd3ba9 | 1563 | memcpy (readbuf, &document[offset], len); |
d08aafef | 1564 | |
d08aafef PA |
1565 | return len; |
1566 | } | |
1567 | ||
2268b414 JK |
1568 | /* Handle qXfer:libraries-svr4:read. */ |
1569 | ||
1570 | static int | |
1571 | handle_qxfer_libraries_svr4 (const char *annex, | |
1572 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1573 | ULONGEST offset, LONGEST len) | |
1574 | { | |
1575 | if (writebuf != NULL) | |
1576 | return -2; | |
1577 | ||
974387bb | 1578 | if (current_thread == NULL |
52405d85 | 1579 | || !the_target->supports_qxfer_libraries_svr4 ()) |
2268b414 JK |
1580 | return -1; |
1581 | ||
52405d85 TBA |
1582 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, |
1583 | offset, len); | |
2268b414 JK |
1584 | } |
1585 | ||
d08aafef PA |
1586 | /* Handle qXfer:osadata:read. */ |
1587 | ||
1588 | static int | |
1589 | handle_qxfer_osdata (const char *annex, | |
1590 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1591 | ULONGEST offset, LONGEST len) | |
1592 | { | |
52405d85 | 1593 | if (!the_target->supports_qxfer_osdata () || writebuf != NULL) |
d08aafef PA |
1594 | return -2; |
1595 | ||
52405d85 | 1596 | return the_target->qxfer_osdata (annex, readbuf, NULL, offset, len); |
d08aafef PA |
1597 | } |
1598 | ||
1599 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1600 | ||
1601 | static int | |
1602 | handle_qxfer_siginfo (const char *annex, | |
1603 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1604 | ULONGEST offset, LONGEST len) | |
1605 | { | |
52405d85 | 1606 | if (!the_target->supports_qxfer_siginfo ()) |
d08aafef PA |
1607 | return -2; |
1608 | ||
f0db101d | 1609 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1610 | return -1; |
1611 | ||
52405d85 | 1612 | return the_target->qxfer_siginfo (annex, readbuf, writebuf, offset, len); |
d08aafef PA |
1613 | } |
1614 | ||
d08aafef PA |
1615 | /* Handle qXfer:statictrace:read. */ |
1616 | ||
1617 | static int | |
1618 | handle_qxfer_statictrace (const char *annex, | |
1619 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1620 | ULONGEST offset, LONGEST len) | |
1621 | { | |
c12a5089 | 1622 | client_state &cs = get_client_state (); |
d08aafef PA |
1623 | ULONGEST nbytes; |
1624 | ||
1625 | if (writebuf != NULL) | |
1626 | return -2; | |
1627 | ||
c12a5089 SC |
1628 | if (annex[0] != '\0' || current_thread == NULL |
1629 | || cs.current_traceframe == -1) | |
d08aafef PA |
1630 | return -1; |
1631 | ||
c12a5089 | 1632 | if (traceframe_read_sdata (cs.current_traceframe, offset, |
d08aafef PA |
1633 | readbuf, len, &nbytes)) |
1634 | return -1; | |
1635 | return nbytes; | |
1636 | } | |
1637 | ||
649ebbca DE |
1638 | /* Helper for handle_qxfer_threads_proper. |
1639 | Emit the XML to describe the thread of INF. */ | |
d08aafef | 1640 | |
dc146f7c | 1641 | static void |
71a64d8b | 1642 | handle_qxfer_threads_worker (thread_info *thread, std::string *buffer) |
dc146f7c | 1643 | { |
124aceb4 | 1644 | ptid_t ptid = ptid_of (thread); |
649ebbca DE |
1645 | char ptid_s[100]; |
1646 | int core = target_core_of_thread (ptid); | |
1647 | char core_s[21]; | |
79efa585 | 1648 | const char *name = target_thread_name (ptid); |
f6327dcb KB |
1649 | int handle_len; |
1650 | gdb_byte *handle; | |
1651 | bool handle_status = target_thread_handle (ptid, &handle, &handle_len); | |
dc146f7c | 1652 | |
7b961964 SM |
1653 | /* If this is a fork or vfork child (has a fork parent), GDB does not yet |
1654 | know about this process, and must not know about it until it gets the | |
1655 | corresponding (v)fork event. Exclude this thread from the list. */ | |
1656 | if (target_thread_pending_parent (thread) != nullptr) | |
1657 | return; | |
1658 | ||
649ebbca | 1659 | write_ptid (ptid_s, ptid); |
dc146f7c | 1660 | |
71a64d8b | 1661 | string_xml_appendf (*buffer, "<thread id=\"%s\"", ptid_s); |
79efa585 | 1662 | |
649ebbca | 1663 | if (core != -1) |
dc146f7c | 1664 | { |
649ebbca | 1665 | sprintf (core_s, "%d", core); |
71a64d8b | 1666 | string_xml_appendf (*buffer, " core=\"%s\"", core_s); |
649ebbca | 1667 | } |
79efa585 SM |
1668 | |
1669 | if (name != NULL) | |
71a64d8b | 1670 | string_xml_appendf (*buffer, " name=\"%s\"", name); |
79efa585 | 1671 | |
f6327dcb KB |
1672 | if (handle_status) |
1673 | { | |
1674 | char *handle_s = (char *) alloca (handle_len * 2 + 1); | |
1675 | bin2hex (handle, handle_s, handle_len); | |
71a64d8b | 1676 | string_xml_appendf (*buffer, " handle=\"%s\"", handle_s); |
f6327dcb KB |
1677 | } |
1678 | ||
71a64d8b | 1679 | string_xml_appendf (*buffer, "/>\n"); |
649ebbca | 1680 | } |
dc146f7c | 1681 | |
028a4603 PA |
1682 | /* Helper for handle_qxfer_threads. Return true on success, false |
1683 | otherwise. */ | |
dc146f7c | 1684 | |
028a4603 | 1685 | static bool |
71a64d8b | 1686 | handle_qxfer_threads_proper (std::string *buffer) |
649ebbca | 1687 | { |
71a64d8b | 1688 | *buffer += "<threads>\n"; |
649ebbca | 1689 | |
330d6309 PA |
1690 | /* The target may need to access memory and registers (e.g. via |
1691 | libthread_db) to fetch thread properties. Even if don't need to | |
1692 | stop threads to access memory, we still will need to be able to | |
1693 | access registers, and other ptrace accesses like | |
1694 | PTRACE_GET_THREAD_AREA that require a paused thread. Pause all | |
1695 | threads here, so that we pause each thread at most once for all | |
1696 | accesses. */ | |
1697 | if (non_stop) | |
1698 | target_pause_all (true); | |
1699 | ||
1700 | for_each_thread ([&] (thread_info *thread) | |
c0e15c9b | 1701 | { |
330d6309 | 1702 | handle_qxfer_threads_worker (thread, buffer); |
c0e15c9b | 1703 | }); |
dc146f7c | 1704 | |
330d6309 PA |
1705 | if (non_stop) |
1706 | target_unpause_all (true); | |
1707 | ||
71a64d8b | 1708 | *buffer += "</threads>\n"; |
330d6309 | 1709 | return true; |
dc146f7c VP |
1710 | } |
1711 | ||
d08aafef PA |
1712 | /* Handle qXfer:threads:read. */ |
1713 | ||
dc146f7c | 1714 | static int |
d08aafef PA |
1715 | handle_qxfer_threads (const char *annex, |
1716 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1717 | ULONGEST offset, LONGEST len) | |
dc146f7c | 1718 | { |
71a64d8b | 1719 | static std::string result; |
dc146f7c | 1720 | |
d08aafef PA |
1721 | if (writebuf != NULL) |
1722 | return -2; | |
1723 | ||
f0db101d | 1724 | if (annex[0] != '\0') |
d08aafef | 1725 | return -1; |
dc146f7c VP |
1726 | |
1727 | if (offset == 0) | |
1728 | { | |
dc146f7c VP |
1729 | /* When asked for data at offset 0, generate everything and store into |
1730 | 'result'. Successive reads will be served off 'result'. */ | |
71a64d8b | 1731 | result.clear (); |
dc146f7c | 1732 | |
71a64d8b | 1733 | bool res = handle_qxfer_threads_proper (&result); |
028a4603 PA |
1734 | |
1735 | if (!res) | |
1736 | return -1; | |
dc146f7c VP |
1737 | } |
1738 | ||
71a64d8b | 1739 | if (offset >= result.length ()) |
dc146f7c VP |
1740 | { |
1741 | /* We're out of data. */ | |
71a64d8b | 1742 | result.clear (); |
dc146f7c VP |
1743 | return 0; |
1744 | } | |
1745 | ||
71a64d8b TT |
1746 | if (len > result.length () - offset) |
1747 | len = result.length () - offset; | |
d08aafef | 1748 | |
71a64d8b | 1749 | memcpy (readbuf, result.c_str () + offset, len); |
d08aafef PA |
1750 | |
1751 | return len; | |
1752 | } | |
1753 | ||
b3b9301e PA |
1754 | /* Handle qXfer:traceframe-info:read. */ |
1755 | ||
1756 | static int | |
1757 | handle_qxfer_traceframe_info (const char *annex, | |
1758 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1759 | ULONGEST offset, LONGEST len) | |
1760 | { | |
c12a5089 | 1761 | client_state &cs = get_client_state (); |
c9d9117a | 1762 | static std::string result; |
b3b9301e PA |
1763 | |
1764 | if (writebuf != NULL) | |
1765 | return -2; | |
1766 | ||
c12a5089 | 1767 | if (!target_running () || annex[0] != '\0' || cs.current_traceframe == -1) |
b3b9301e PA |
1768 | return -1; |
1769 | ||
1770 | if (offset == 0) | |
1771 | { | |
b3b9301e PA |
1772 | /* When asked for data at offset 0, generate everything and |
1773 | store into 'result'. Successive reads will be served off | |
1774 | 'result'. */ | |
c9d9117a | 1775 | result.clear (); |
b3b9301e | 1776 | |
c9d9117a | 1777 | traceframe_read_info (cs.current_traceframe, &result); |
b3b9301e PA |
1778 | } |
1779 | ||
c9d9117a | 1780 | if (offset >= result.length ()) |
b3b9301e PA |
1781 | { |
1782 | /* We're out of data. */ | |
c9d9117a | 1783 | result.clear (); |
b3b9301e PA |
1784 | return 0; |
1785 | } | |
1786 | ||
c9d9117a TT |
1787 | if (len > result.length () - offset) |
1788 | len = result.length () - offset; | |
b3b9301e | 1789 | |
c9d9117a | 1790 | memcpy (readbuf, result.c_str () + offset, len); |
b3b9301e PA |
1791 | return len; |
1792 | } | |
1793 | ||
78d85199 YQ |
1794 | /* Handle qXfer:fdpic:read. */ |
1795 | ||
1796 | static int | |
1797 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1798 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1799 | { | |
52405d85 | 1800 | if (!the_target->supports_read_loadmap ()) |
78d85199 YQ |
1801 | return -2; |
1802 | ||
f0db101d | 1803 | if (current_thread == NULL) |
78d85199 YQ |
1804 | return -1; |
1805 | ||
52405d85 | 1806 | return the_target->read_loadmap (annex, offset, readbuf, len); |
78d85199 YQ |
1807 | } |
1808 | ||
9accd112 MM |
1809 | /* Handle qXfer:btrace:read. */ |
1810 | ||
1811 | static int | |
1812 | handle_qxfer_btrace (const char *annex, | |
1813 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1814 | ULONGEST offset, LONGEST len) | |
1815 | { | |
c12a5089 | 1816 | client_state &cs = get_client_state (); |
873a185b | 1817 | static std::string cache; |
9accd112 | 1818 | struct thread_info *thread; |
add67df8 PA |
1819 | enum btrace_read_type type; |
1820 | int result; | |
9accd112 | 1821 | |
b1223e78 | 1822 | if (writebuf != NULL) |
9accd112 MM |
1823 | return -2; |
1824 | ||
d7e15655 TT |
1825 | if (cs.general_thread == null_ptid |
1826 | || cs.general_thread == minus_one_ptid) | |
9accd112 | 1827 | { |
c12a5089 | 1828 | strcpy (cs.own_buf, "E.Must select a single thread."); |
9accd112 MM |
1829 | return -3; |
1830 | } | |
1831 | ||
c12a5089 | 1832 | thread = find_thread_ptid (cs.general_thread); |
9accd112 MM |
1833 | if (thread == NULL) |
1834 | { | |
c12a5089 | 1835 | strcpy (cs.own_buf, "E.No such thread."); |
9accd112 MM |
1836 | return -3; |
1837 | } | |
1838 | ||
1839 | if (thread->btrace == NULL) | |
1840 | { | |
c12a5089 | 1841 | strcpy (cs.own_buf, "E.Btrace not enabled."); |
9accd112 MM |
1842 | return -3; |
1843 | } | |
1844 | ||
1845 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1846 | type = BTRACE_READ_ALL; |
9accd112 | 1847 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1848 | type = BTRACE_READ_NEW; |
969c39fb MM |
1849 | else if (strcmp (annex, "delta") == 0) |
1850 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1851 | else |
1852 | { | |
c12a5089 | 1853 | strcpy (cs.own_buf, "E.Bad annex."); |
9accd112 MM |
1854 | return -3; |
1855 | } | |
1856 | ||
1857 | if (offset == 0) | |
1858 | { | |
873a185b | 1859 | cache.clear (); |
9accd112 | 1860 | |
a70b8144 | 1861 | try |
b1223e78 MM |
1862 | { |
1863 | result = target_read_btrace (thread->btrace, &cache, type); | |
1864 | if (result != 0) | |
873a185b | 1865 | memcpy (cs.own_buf, cache.c_str (), cache.length ()); |
b1223e78 | 1866 | } |
230d2906 | 1867 | catch (const gdb_exception_error &exception) |
969c39fb | 1868 | { |
3d6e9d23 | 1869 | sprintf (cs.own_buf, "E.%s", exception.what ()); |
b1223e78 | 1870 | result = -1; |
969c39fb | 1871 | } |
b1223e78 MM |
1872 | |
1873 | if (result != 0) | |
1874 | return -3; | |
9accd112 | 1875 | } |
873a185b | 1876 | else if (offset > cache.length ()) |
9accd112 | 1877 | { |
873a185b | 1878 | cache.clear (); |
9accd112 MM |
1879 | return -3; |
1880 | } | |
1881 | ||
873a185b TT |
1882 | if (len > cache.length () - offset) |
1883 | len = cache.length () - offset; | |
9accd112 | 1884 | |
873a185b | 1885 | memcpy (readbuf, cache.c_str () + offset, len); |
9accd112 MM |
1886 | |
1887 | return len; | |
1888 | } | |
1889 | ||
f4abbc16 MM |
1890 | /* Handle qXfer:btrace-conf:read. */ |
1891 | ||
1892 | static int | |
1893 | handle_qxfer_btrace_conf (const char *annex, | |
1894 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1895 | ULONGEST offset, LONGEST len) | |
1896 | { | |
c12a5089 | 1897 | client_state &cs = get_client_state (); |
873a185b | 1898 | static std::string cache; |
f4abbc16 MM |
1899 | struct thread_info *thread; |
1900 | int result; | |
1901 | ||
b1223e78 | 1902 | if (writebuf != NULL) |
f4abbc16 MM |
1903 | return -2; |
1904 | ||
f0db101d | 1905 | if (annex[0] != '\0') |
f4abbc16 MM |
1906 | return -1; |
1907 | ||
d7e15655 TT |
1908 | if (cs.general_thread == null_ptid |
1909 | || cs.general_thread == minus_one_ptid) | |
f4abbc16 | 1910 | { |
c12a5089 | 1911 | strcpy (cs.own_buf, "E.Must select a single thread."); |
f4abbc16 MM |
1912 | return -3; |
1913 | } | |
1914 | ||
c12a5089 | 1915 | thread = find_thread_ptid (cs.general_thread); |
f4abbc16 MM |
1916 | if (thread == NULL) |
1917 | { | |
c12a5089 | 1918 | strcpy (cs.own_buf, "E.No such thread."); |
f4abbc16 MM |
1919 | return -3; |
1920 | } | |
1921 | ||
1922 | if (thread->btrace == NULL) | |
1923 | { | |
c12a5089 | 1924 | strcpy (cs.own_buf, "E.Btrace not enabled."); |
f4abbc16 MM |
1925 | return -3; |
1926 | } | |
1927 | ||
1928 | if (offset == 0) | |
1929 | { | |
873a185b | 1930 | cache.clear (); |
f4abbc16 | 1931 | |
a70b8144 | 1932 | try |
b1223e78 MM |
1933 | { |
1934 | result = target_read_btrace_conf (thread->btrace, &cache); | |
1935 | if (result != 0) | |
873a185b | 1936 | memcpy (cs.own_buf, cache.c_str (), cache.length ()); |
b1223e78 | 1937 | } |
230d2906 | 1938 | catch (const gdb_exception_error &exception) |
f4abbc16 | 1939 | { |
3d6e9d23 | 1940 | sprintf (cs.own_buf, "E.%s", exception.what ()); |
b1223e78 | 1941 | result = -1; |
f4abbc16 | 1942 | } |
b1223e78 MM |
1943 | |
1944 | if (result != 0) | |
1945 | return -3; | |
f4abbc16 | 1946 | } |
873a185b | 1947 | else if (offset > cache.length ()) |
f4abbc16 | 1948 | { |
873a185b | 1949 | cache.clear (); |
f4abbc16 MM |
1950 | return -3; |
1951 | } | |
1952 | ||
873a185b TT |
1953 | if (len > cache.length () - offset) |
1954 | len = cache.length () - offset; | |
f4abbc16 | 1955 | |
873a185b | 1956 | memcpy (readbuf, cache.c_str () + offset, len); |
f4abbc16 MM |
1957 | |
1958 | return len; | |
1959 | } | |
1960 | ||
d08aafef PA |
1961 | static const struct qxfer qxfer_packets[] = |
1962 | { | |
1963 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1964 | { "btrace", handle_qxfer_btrace }, |
f4abbc16 | 1965 | { "btrace-conf", handle_qxfer_btrace_conf }, |
e57f1de3 | 1966 | { "exec-file", handle_qxfer_exec_file}, |
78d85199 | 1967 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1968 | { "features", handle_qxfer_features }, |
1969 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1970 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1971 | { "osdata", handle_qxfer_osdata }, |
1972 | { "siginfo", handle_qxfer_siginfo }, | |
d08aafef PA |
1973 | { "statictrace", handle_qxfer_statictrace }, |
1974 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1975 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1976 | }; |
1977 | ||
1978 | static int | |
1979 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1980 | { | |
1981 | int i; | |
1982 | char *object; | |
1983 | char *rw; | |
1984 | char *annex; | |
1985 | char *offset; | |
1986 | ||
61012eef | 1987 | if (!startswith (own_buf, "qXfer:")) |
d08aafef PA |
1988 | return 0; |
1989 | ||
1990 | /* Grab the object, r/w and annex. */ | |
1991 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1992 | { | |
1993 | write_enn (own_buf); | |
1994 | return 1; | |
1995 | } | |
1996 | ||
1997 | for (i = 0; | |
1998 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1999 | i++) | |
2000 | { | |
2001 | const struct qxfer *q = &qxfer_packets[i]; | |
2002 | ||
2003 | if (strcmp (object, q->object) == 0) | |
2004 | { | |
2005 | if (strcmp (rw, "read") == 0) | |
2006 | { | |
2007 | unsigned char *data; | |
2008 | int n; | |
2009 | CORE_ADDR ofs; | |
2010 | unsigned int len; | |
2011 | ||
2012 | /* Grab the offset and length. */ | |
2013 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
2014 | { | |
2015 | write_enn (own_buf); | |
2016 | return 1; | |
2017 | } | |
2018 | ||
2019 | /* Read one extra byte, as an indicator of whether there is | |
2020 | more. */ | |
2021 | if (len > PBUFSIZ - 2) | |
2022 | len = PBUFSIZ - 2; | |
224c3ddb | 2023 | data = (unsigned char *) malloc (len + 1); |
d08aafef PA |
2024 | if (data == NULL) |
2025 | { | |
2026 | write_enn (own_buf); | |
2027 | return 1; | |
2028 | } | |
2029 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
2030 | if (n == -2) | |
2031 | { | |
2032 | free (data); | |
2033 | return 0; | |
2034 | } | |
5cc22e4c MM |
2035 | else if (n == -3) |
2036 | { | |
2037 | /* Preserve error message. */ | |
2038 | } | |
d08aafef PA |
2039 | else if (n < 0) |
2040 | write_enn (own_buf); | |
2041 | else if (n > len) | |
2042 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
2043 | else | |
2044 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
2045 | ||
2046 | free (data); | |
2047 | return 1; | |
2048 | } | |
2049 | else if (strcmp (rw, "write") == 0) | |
2050 | { | |
2051 | int n; | |
2052 | unsigned int len; | |
2053 | CORE_ADDR ofs; | |
2054 | unsigned char *data; | |
2055 | ||
2056 | strcpy (own_buf, "E00"); | |
224c3ddb | 2057 | data = (unsigned char *) malloc (packet_len - (offset - own_buf)); |
d08aafef PA |
2058 | if (data == NULL) |
2059 | { | |
2060 | write_enn (own_buf); | |
2061 | return 1; | |
2062 | } | |
2063 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
2064 | &ofs, &len, data) < 0) | |
2065 | { | |
2066 | free (data); | |
2067 | write_enn (own_buf); | |
2068 | return 1; | |
2069 | } | |
2070 | ||
2071 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
2072 | if (n == -2) | |
2073 | { | |
2074 | free (data); | |
2075 | return 0; | |
2076 | } | |
5cc22e4c MM |
2077 | else if (n == -3) |
2078 | { | |
2079 | /* Preserve error message. */ | |
2080 | } | |
d08aafef PA |
2081 | else if (n < 0) |
2082 | write_enn (own_buf); | |
2083 | else | |
2084 | sprintf (own_buf, "%x", n); | |
dc146f7c | 2085 | |
d08aafef PA |
2086 | free (data); |
2087 | return 1; | |
2088 | } | |
dc146f7c | 2089 | |
d08aafef PA |
2090 | return 0; |
2091 | } | |
2092 | } | |
dc146f7c | 2093 | |
d08aafef | 2094 | return 0; |
dc146f7c VP |
2095 | } |
2096 | ||
30ba68cb MS |
2097 | /* Compute 32 bit CRC from inferior memory. |
2098 | ||
2099 | On success, return 32 bit CRC. | |
2100 | On failure, return (unsigned long long) -1. */ | |
2101 | ||
2102 | static unsigned long long | |
2103 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
2104 | { | |
30ba68cb MS |
2105 | while (len--) |
2106 | { | |
2107 | unsigned char byte = 0; | |
2108 | ||
2109 | /* Return failure if memory read fails. */ | |
2110 | if (read_inferior_memory (base, &byte, 1) != 0) | |
2111 | return (unsigned long long) -1; | |
2112 | ||
65da7f14 | 2113 | crc = xcrc32 (&byte, 1, crc); |
30ba68cb MS |
2114 | base++; |
2115 | } | |
2116 | return (unsigned long long) crc; | |
2117 | } | |
2118 | ||
546b77fe LM |
2119 | /* Parse the qMemTags packet request into ADDR and LEN. */ |
2120 | ||
2121 | static void | |
2122 | parse_fetch_memtags_request (char *request, CORE_ADDR *addr, size_t *len, | |
2123 | int *type) | |
2124 | { | |
2125 | gdb_assert (startswith (request, "qMemTags:")); | |
2126 | ||
2127 | const char *p = request + strlen ("qMemTags:"); | |
2128 | ||
2129 | /* Read address and length. */ | |
2130 | unsigned int length = 0; | |
2131 | p = decode_m_packet_params (p, addr, &length, ':'); | |
2132 | *len = length; | |
2133 | ||
2134 | /* Read the tag type. */ | |
2135 | ULONGEST tag_type = 0; | |
2136 | p = unpack_varlen_hex (p, &tag_type); | |
2137 | *type = (int) tag_type; | |
2138 | } | |
2139 | ||
043c3577 MM |
2140 | /* Add supported btrace packets to BUF. */ |
2141 | ||
2142 | static void | |
2143 | supported_btrace_packets (char *buf) | |
2144 | { | |
de6242d3 MM |
2145 | strcat (buf, ";Qbtrace:bts+"); |
2146 | strcat (buf, ";Qbtrace-conf:bts:size+"); | |
2147 | strcat (buf, ";Qbtrace:pt+"); | |
2148 | strcat (buf, ";Qbtrace-conf:pt:size+"); | |
043c3577 MM |
2149 | strcat (buf, ";Qbtrace:off+"); |
2150 | strcat (buf, ";qXfer:btrace:read+"); | |
f4abbc16 | 2151 | strcat (buf, ";qXfer:btrace-conf:read+"); |
043c3577 MM |
2152 | } |
2153 | ||
ce3a066d | 2154 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 2155 | |
5b3da067 | 2156 | static void |
0e7f50da | 2157 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 2158 | { |
c12a5089 | 2159 | client_state &cs = get_client_state (); |
9c80ecd6 | 2160 | static std::list<thread_info *>::const_iterator thread_iter; |
0d62e5e8 | 2161 | |
bb63802a | 2162 | /* Reply the current thread id. */ |
db42f210 | 2163 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 2164 | { |
124aceb4 | 2165 | ptid_t ptid; |
f8a4e119 | 2166 | require_running_or_return (own_buf); |
bd99dc85 | 2167 | |
c12a5089 SC |
2168 | if (cs.general_thread != null_ptid && cs.general_thread != minus_one_ptid) |
2169 | ptid = cs.general_thread; | |
bd99dc85 PA |
2170 | else |
2171 | { | |
9c80ecd6 SM |
2172 | thread_iter = all_threads.begin (); |
2173 | ptid = (*thread_iter)->id; | |
bd99dc85 PA |
2174 | } |
2175 | ||
95954743 PA |
2176 | sprintf (own_buf, "QC"); |
2177 | own_buf += 2; | |
124aceb4 | 2178 | write_ptid (own_buf, ptid); |
bb63802a UW |
2179 | return; |
2180 | } | |
2181 | ||
ce3a066d DJ |
2182 | if (strcmp ("qSymbol::", own_buf) == 0) |
2183 | { | |
24583e45 | 2184 | scoped_restore_current_thread restore_thread; |
34c65914 PA |
2185 | |
2186 | /* For qSymbol, GDB only changes the current thread if the | |
2187 | previous current thread was of a different process. So if | |
2188 | the previous thread is gone, we need to pick another one of | |
2189 | the same process. This can happen e.g., if we followed an | |
2190 | exec in a non-leader thread. */ | |
2191 | if (current_thread == NULL) | |
2192 | { | |
24583e45 | 2193 | thread_info *any_thread |
e99b03dc | 2194 | = find_any_thread_of_pid (cs.general_thread.pid ()); |
24583e45 | 2195 | switch_to_thread (any_thread); |
34c65914 PA |
2196 | |
2197 | /* Just in case, if we didn't find a thread, then bail out | |
2198 | instead of crashing. */ | |
2199 | if (current_thread == NULL) | |
2200 | { | |
2201 | write_enn (own_buf); | |
34c65914 PA |
2202 | return; |
2203 | } | |
2204 | } | |
2205 | ||
d3bbe7a0 PA |
2206 | /* GDB is suggesting new symbols have been loaded. This may |
2207 | mean a new shared library has been detected as loaded, so | |
2208 | take the opportunity to check if breakpoints we think are | |
2209 | inserted, still are. Note that it isn't guaranteed that | |
2210 | we'll see this when a shared library is loaded, and nor will | |
2211 | we see this for unloads (although breakpoints in unloaded | |
2212 | libraries shouldn't trigger), as GDB may not find symbols for | |
2213 | the library at all. We also re-validate breakpoints when we | |
2214 | see a second GDB breakpoint for the same address, and or when | |
2215 | we access breakpoint shadows. */ | |
2216 | validate_breakpoints (); | |
2217 | ||
fa593d66 PA |
2218 | if (target_supports_tracepoints ()) |
2219 | tracepoint_look_up_symbols (); | |
2220 | ||
2a31c7aa | 2221 | if (current_thread != NULL) |
52405d85 | 2222 | the_target->look_up_symbols (); |
2f2893d9 | 2223 | |
ce3a066d DJ |
2224 | strcpy (own_buf, "OK"); |
2225 | return; | |
2226 | } | |
2227 | ||
db42f210 | 2228 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 2229 | { |
db42f210 | 2230 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 2231 | { |
f8a4e119 | 2232 | require_running_or_return (own_buf); |
9c80ecd6 | 2233 | thread_iter = all_threads.begin (); |
95954743 PA |
2234 | |
2235 | *own_buf++ = 'm'; | |
9c80ecd6 SM |
2236 | ptid_t ptid = (*thread_iter)->id; |
2237 | write_ptid (own_buf, ptid); | |
2238 | thread_iter++; | |
0d62e5e8 DJ |
2239 | return; |
2240 | } | |
db42f210 PA |
2241 | |
2242 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 2243 | { |
f8a4e119 | 2244 | require_running_or_return (own_buf); |
9c80ecd6 | 2245 | if (thread_iter != all_threads.end ()) |
db42f210 | 2246 | { |
95954743 | 2247 | *own_buf++ = 'm'; |
9c80ecd6 SM |
2248 | ptid_t ptid = (*thread_iter)->id; |
2249 | write_ptid (own_buf, ptid); | |
2250 | thread_iter++; | |
db42f210 PA |
2251 | return; |
2252 | } | |
2253 | else | |
2254 | { | |
2255 | sprintf (own_buf, "l"); | |
2256 | return; | |
2257 | } | |
0d62e5e8 DJ |
2258 | } |
2259 | } | |
aa691b87 | 2260 | |
52405d85 | 2261 | if (the_target->supports_read_offsets () |
52fb6437 NS |
2262 | && strcmp ("qOffsets", own_buf) == 0) |
2263 | { | |
2264 | CORE_ADDR text, data; | |
2d717e4f | 2265 | |
f8a4e119 | 2266 | require_running_or_return (own_buf); |
52405d85 | 2267 | if (the_target->read_offsets (&text, &data)) |
52fb6437 NS |
2268 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", |
2269 | (long)text, (long)data, (long)data); | |
2270 | else | |
2271 | write_enn (own_buf); | |
1b3f6016 | 2272 | |
52fb6437 NS |
2273 | return; |
2274 | } | |
2275 | ||
be2a5f71 | 2276 | /* Protocol features query. */ |
61012eef | 2277 | if (startswith (own_buf, "qSupported") |
be2a5f71 DJ |
2278 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
2279 | { | |
95954743 | 2280 | char *p = &own_buf[10]; |
fa593d66 | 2281 | int gdb_supports_qRelocInsn = 0; |
95954743 PA |
2282 | |
2283 | /* Process each feature being provided by GDB. The first | |
2284 | feature will follow a ':', and latter features will follow | |
2285 | ';'. */ | |
2286 | if (*p == ':') | |
d149dd1d | 2287 | { |
b315b67d SM |
2288 | std::vector<std::string> qsupported; |
2289 | std::vector<const char *> unknowns; | |
d149dd1d PA |
2290 | |
2291 | /* Two passes, to avoid nested strtok calls in | |
2292 | target_process_qsupported. */ | |
ca3a04f6 CB |
2293 | char *saveptr; |
2294 | for (p = strtok_r (p + 1, ";", &saveptr); | |
d149dd1d | 2295 | p != NULL; |
ca3a04f6 | 2296 | p = strtok_r (NULL, ";", &saveptr)) |
b315b67d | 2297 | qsupported.emplace_back (p); |
d149dd1d | 2298 | |
b315b67d | 2299 | for (const std::string &feature : qsupported) |
d149dd1d | 2300 | { |
b315b67d | 2301 | if (feature == "multiprocess+") |
d149dd1d PA |
2302 | { |
2303 | /* GDB supports and wants multi-process support if | |
2304 | possible. */ | |
2305 | if (target_supports_multi_process ()) | |
c12a5089 | 2306 | cs.multi_process = 1; |
d149dd1d | 2307 | } |
b315b67d | 2308 | else if (feature == "qRelocInsn+") |
fa593d66 PA |
2309 | { |
2310 | /* GDB supports relocate instruction requests. */ | |
2311 | gdb_supports_qRelocInsn = 1; | |
2312 | } | |
b315b67d | 2313 | else if (feature == "swbreak+") |
1ec68e26 PA |
2314 | { |
2315 | /* GDB wants us to report whether a trap is caused | |
2316 | by a software breakpoint and for us to handle PC | |
2317 | adjustment if necessary on this target. */ | |
2318 | if (target_supports_stopped_by_sw_breakpoint ()) | |
c12a5089 | 2319 | cs.swbreak_feature = 1; |
1ec68e26 | 2320 | } |
b315b67d | 2321 | else if (feature == "hwbreak+") |
1ec68e26 PA |
2322 | { |
2323 | /* GDB wants us to report whether a trap is caused | |
2324 | by a hardware breakpoint. */ | |
2325 | if (target_supports_stopped_by_hw_breakpoint ()) | |
c12a5089 | 2326 | cs.hwbreak_feature = 1; |
1ec68e26 | 2327 | } |
b315b67d | 2328 | else if (feature == "fork-events+") |
89245bc0 DB |
2329 | { |
2330 | /* GDB supports and wants fork events if possible. */ | |
2331 | if (target_supports_fork_events ()) | |
c12a5089 | 2332 | cs.report_fork_events = 1; |
89245bc0 | 2333 | } |
b315b67d | 2334 | else if (feature == "vfork-events+") |
89245bc0 DB |
2335 | { |
2336 | /* GDB supports and wants vfork events if possible. */ | |
2337 | if (target_supports_vfork_events ()) | |
c12a5089 | 2338 | cs.report_vfork_events = 1; |
89245bc0 | 2339 | } |
b315b67d | 2340 | else if (feature == "exec-events+") |
94585166 DB |
2341 | { |
2342 | /* GDB supports and wants exec events if possible. */ | |
2343 | if (target_supports_exec_events ()) | |
c12a5089 | 2344 | cs.report_exec_events = 1; |
94585166 | 2345 | } |
b315b67d | 2346 | else if (feature == "vContSupported+") |
c12a5089 | 2347 | cs.vCont_supported = 1; |
b315b67d | 2348 | else if (feature == "QThreadEvents+") |
65706a29 | 2349 | ; |
b315b67d | 2350 | else if (feature == "no-resumed+") |
f2faf941 PA |
2351 | { |
2352 | /* GDB supports and wants TARGET_WAITKIND_NO_RESUMED | |
2353 | events. */ | |
3e6ec53a | 2354 | report_no_resumed = true; |
f2faf941 | 2355 | } |
546b77fe LM |
2356 | else if (feature == "memory-tagging+") |
2357 | { | |
2358 | /* GDB supports memory tagging features. */ | |
2359 | if (target_supports_memory_tagging ()) | |
2360 | cs.memory_tagging_feature = true; | |
2361 | } | |
d149dd1d | 2362 | else |
06e03fff PA |
2363 | { |
2364 | /* Move the unknown features all together. */ | |
b315b67d | 2365 | unknowns.push_back (feature.c_str ()); |
06e03fff | 2366 | } |
d149dd1d PA |
2367 | } |
2368 | ||
06e03fff PA |
2369 | /* Give the target backend a chance to process the unknown |
2370 | features. */ | |
b315b67d | 2371 | target_process_qsupported (unknowns); |
d149dd1d | 2372 | } |
95954743 | 2373 | |
9b224c5e | 2374 | sprintf (own_buf, |
0a2dde4a SDJ |
2375 | "PacketSize=%x;QPassSignals+;QProgramSignals+;" |
2376 | "QStartupWithShell+;QEnvironmentHexEncoded+;" | |
bc3b087d SDJ |
2377 | "QEnvironmentReset+;QEnvironmentUnset+;" |
2378 | "QSetWorkingDir+", | |
9b224c5e | 2379 | PBUFSIZ - 1); |
0876f84a | 2380 | |
82075af2 JS |
2381 | if (target_supports_catch_syscall ()) |
2382 | strcat (own_buf, ";QCatchSyscalls+"); | |
2383 | ||
52405d85 | 2384 | if (the_target->supports_qxfer_libraries_svr4 ()) |
b1fbec62 GB |
2385 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
2386 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
2387 | else |
2388 | { | |
2389 | /* We do not have any hook to indicate whether the non-SVR4 target | |
2390 | backend supports qXfer:libraries:read, so always report it. */ | |
2391 | strcat (own_buf, ";qXfer:libraries:read+"); | |
2392 | } | |
255e7678 | 2393 | |
52405d85 | 2394 | if (the_target->supports_read_auxv ()) |
9f2e1e63 | 2395 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 2396 | |
52405d85 | 2397 | if (the_target->supports_qxfer_siginfo ()) |
4aa995e1 PA |
2398 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); |
2399 | ||
52405d85 | 2400 | if (the_target->supports_read_loadmap ()) |
78d85199 YQ |
2401 | strcat (own_buf, ";qXfer:fdpic:read+"); |
2402 | ||
221c031f UW |
2403 | /* We always report qXfer:features:read, as targets may |
2404 | install XML files on a subsequent call to arch_setup. | |
2405 | If we reported to GDB on startup that we don't support | |
2406 | qXfer:feature:read at all, we will never be re-queried. */ | |
2407 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 2408 | |
c12a5089 | 2409 | if (cs.transport_is_reliable) |
a6f3e723 | 2410 | strcat (own_buf, ";QStartNoAckMode+"); |
07e059b5 | 2411 | |
52405d85 | 2412 | if (the_target->supports_qxfer_osdata ()) |
1b3f6016 | 2413 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 2414 | |
cf8fd78b PA |
2415 | if (target_supports_multi_process ()) |
2416 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 2417 | |
89245bc0 DB |
2418 | if (target_supports_fork_events ()) |
2419 | strcat (own_buf, ";fork-events+"); | |
2420 | ||
2421 | if (target_supports_vfork_events ()) | |
2422 | strcat (own_buf, ";vfork-events+"); | |
2423 | ||
94585166 DB |
2424 | if (target_supports_exec_events ()) |
2425 | strcat (own_buf, ";exec-events+"); | |
2426 | ||
bd99dc85 PA |
2427 | if (target_supports_non_stop ()) |
2428 | strcat (own_buf, ";QNonStop+"); | |
2429 | ||
03583c20 UW |
2430 | if (target_supports_disable_randomization ()) |
2431 | strcat (own_buf, ";QDisableRandomization+"); | |
2432 | ||
dc146f7c VP |
2433 | strcat (own_buf, ";qXfer:threads:read+"); |
2434 | ||
219f2f23 PA |
2435 | if (target_supports_tracepoints ()) |
2436 | { | |
2437 | strcat (own_buf, ";ConditionalTracepoints+"); | |
2438 | strcat (own_buf, ";TraceStateVariables+"); | |
2439 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 2440 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
2441 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
2442 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 2443 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 2444 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 2445 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 2446 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 2447 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 2448 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 2449 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
2450 | } |
2451 | ||
bd2b2909 AT |
2452 | if (target_supports_hardware_single_step () |
2453 | || target_supports_software_single_step () ) | |
70b90b91 | 2454 | { |
70b90b91 YQ |
2455 | strcat (own_buf, ";ConditionalBreakpoints+"); |
2456 | } | |
d3ce09f5 | 2457 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 2458 | |
d1feda86 YQ |
2459 | if (target_supports_agent ()) |
2460 | strcat (own_buf, ";QAgent+"); | |
2461 | ||
8263b346 TBA |
2462 | if (the_target->supports_btrace ()) |
2463 | supported_btrace_packets (own_buf); | |
9accd112 | 2464 | |
1ec68e26 PA |
2465 | if (target_supports_stopped_by_sw_breakpoint ()) |
2466 | strcat (own_buf, ";swbreak+"); | |
2467 | ||
2468 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2469 | strcat (own_buf, ";hwbreak+"); | |
2470 | ||
52405d85 | 2471 | if (the_target->supports_pid_to_exec_file ()) |
e57f1de3 GB |
2472 | strcat (own_buf, ";qXfer:exec-file:read+"); |
2473 | ||
750ce8d1 YQ |
2474 | strcat (own_buf, ";vContSupported+"); |
2475 | ||
65706a29 PA |
2476 | strcat (own_buf, ";QThreadEvents+"); |
2477 | ||
f2faf941 PA |
2478 | strcat (own_buf, ";no-resumed+"); |
2479 | ||
546b77fe LM |
2480 | if (target_supports_memory_tagging ()) |
2481 | strcat (own_buf, ";memory-tagging+"); | |
2482 | ||
14d2069a GB |
2483 | /* Reinitialize components as needed for the new connection. */ |
2484 | hostio_handle_new_gdb_connection (); | |
de0d863e DB |
2485 | target_handle_new_gdb_connection (); |
2486 | ||
be2a5f71 DJ |
2487 | return; |
2488 | } | |
2489 | ||
dae5f5cf | 2490 | /* Thread-local storage support. */ |
52405d85 | 2491 | if (the_target->supports_get_tls_address () |
61012eef | 2492 | && startswith (own_buf, "qGetTLSAddr:")) |
dae5f5cf DJ |
2493 | { |
2494 | char *p = own_buf + 12; | |
5b1c542e | 2495 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 2496 | int i, err; |
95954743 | 2497 | ptid_t ptid = null_ptid; |
dae5f5cf | 2498 | |
f8a4e119 | 2499 | require_running_or_return (own_buf); |
2d717e4f | 2500 | |
dae5f5cf DJ |
2501 | for (i = 0; i < 3; i++) |
2502 | { | |
2503 | char *p2; | |
2504 | int len; | |
2505 | ||
2506 | if (p == NULL) | |
2507 | break; | |
2508 | ||
2509 | p2 = strchr (p, ','); | |
2510 | if (p2) | |
2511 | { | |
2512 | len = p2 - p; | |
2513 | p2++; | |
2514 | } | |
2515 | else | |
2516 | { | |
2517 | len = strlen (p); | |
2518 | p2 = NULL; | |
2519 | } | |
2520 | ||
5b1c542e | 2521 | if (i == 0) |
95954743 | 2522 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
2523 | else |
2524 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
2525 | p = p2; |
2526 | } | |
2527 | ||
2528 | if (p != NULL || i < 3) | |
2529 | err = 1; | |
2530 | else | |
2531 | { | |
e09875d4 | 2532 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
2533 | |
2534 | if (thread == NULL) | |
2535 | err = 2; | |
2536 | else | |
52405d85 TBA |
2537 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
2538 | &address); | |
dae5f5cf DJ |
2539 | } |
2540 | ||
2541 | if (err == 0) | |
2542 | { | |
c6f46ca0 | 2543 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
2544 | return; |
2545 | } | |
2546 | else if (err > 0) | |
2547 | { | |
2548 | write_enn (own_buf); | |
2549 | return; | |
2550 | } | |
2551 | ||
2552 | /* Otherwise, pretend we do not understand this packet. */ | |
2553 | } | |
2554 | ||
711e434b | 2555 | /* Windows OS Thread Information Block address support. */ |
52405d85 | 2556 | if (the_target->supports_get_tib_address () |
61012eef | 2557 | && startswith (own_buf, "qGetTIBAddr:")) |
711e434b | 2558 | { |
256642e8 | 2559 | const char *annex; |
711e434b PM |
2560 | int n; |
2561 | CORE_ADDR tlb; | |
2562 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2563 | ||
52405d85 | 2564 | n = the_target->get_tib_address (ptid, &tlb); |
711e434b PM |
2565 | if (n == 1) |
2566 | { | |
c6f46ca0 | 2567 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2568 | return; |
2569 | } | |
2570 | else if (n == 0) | |
2571 | { | |
2572 | write_enn (own_buf); | |
2573 | return; | |
2574 | } | |
2575 | return; | |
2576 | } | |
2577 | ||
c74d0ad8 | 2578 | /* Handle "monitor" commands. */ |
61012eef | 2579 | if (startswith (own_buf, "qRcmd,")) |
c74d0ad8 | 2580 | { |
224c3ddb | 2581 | char *mon = (char *) malloc (PBUFSIZ); |
c74d0ad8 DJ |
2582 | int len = strlen (own_buf + 6); |
2583 | ||
aef93bd7 DE |
2584 | if (mon == NULL) |
2585 | { | |
2586 | write_enn (own_buf); | |
2587 | return; | |
2588 | } | |
2589 | ||
ff0e980e TT |
2590 | if ((len % 2) != 0 |
2591 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2592 | { |
2593 | write_enn (own_buf); | |
2594 | free (mon); | |
2595 | return; | |
2596 | } | |
2597 | mon[len / 2] = '\0'; | |
2598 | ||
2599 | write_ok (own_buf); | |
2600 | ||
52405d85 | 2601 | if (the_target->handle_monitor_command (mon) == 0) |
cdbfd419 | 2602 | /* Default processing. */ |
d73f2619 | 2603 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2604 | |
2605 | free (mon); | |
2606 | return; | |
2607 | } | |
2608 | ||
61012eef | 2609 | if (startswith (own_buf, "qSearch:memory:")) |
08388c79 | 2610 | { |
f8a4e119 | 2611 | require_running_or_return (own_buf); |
08388c79 DE |
2612 | handle_search_memory (own_buf, packet_len); |
2613 | return; | |
2614 | } | |
2615 | ||
95954743 | 2616 | if (strcmp (own_buf, "qAttached") == 0 |
61012eef | 2617 | || startswith (own_buf, "qAttached:")) |
0b16c5cf | 2618 | { |
95954743 PA |
2619 | struct process_info *process; |
2620 | ||
2621 | if (own_buf[sizeof ("qAttached") - 1]) | |
2622 | { | |
2623 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
9179355e | 2624 | process = find_process_pid (pid); |
95954743 PA |
2625 | } |
2626 | else | |
2627 | { | |
f8a4e119 | 2628 | require_running_or_return (own_buf); |
95954743 PA |
2629 | process = current_process (); |
2630 | } | |
2631 | ||
2632 | if (process == NULL) | |
2633 | { | |
2634 | write_enn (own_buf); | |
2635 | return; | |
2636 | } | |
2637 | ||
2638 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2639 | return; |
2640 | } | |
2641 | ||
61012eef | 2642 | if (startswith (own_buf, "qCRC:")) |
30ba68cb MS |
2643 | { |
2644 | /* CRC check (compare-section). */ | |
256642e8 | 2645 | const char *comma; |
aca22551 | 2646 | ULONGEST base; |
30ba68cb MS |
2647 | int len; |
2648 | unsigned long long crc; | |
2649 | ||
f8a4e119 | 2650 | require_running_or_return (own_buf); |
aca22551 | 2651 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2652 | if (*comma++ != ',') |
2653 | { | |
2654 | write_enn (own_buf); | |
2655 | return; | |
2656 | } | |
2657 | len = strtoul (comma, NULL, 16); | |
2658 | crc = crc32 (base, len, 0xffffffff); | |
2659 | /* Check for memory failure. */ | |
2660 | if (crc == (unsigned long long) -1) | |
2661 | { | |
2662 | write_enn (own_buf); | |
2663 | return; | |
2664 | } | |
2665 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2666 | return; | |
2667 | } | |
2668 | ||
d08aafef PA |
2669 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2670 | return; | |
2671 | ||
219f2f23 PA |
2672 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2673 | return; | |
2674 | ||
546b77fe LM |
2675 | /* Handle fetch memory tags packets. */ |
2676 | if (startswith (own_buf, "qMemTags:") | |
2677 | && target_supports_memory_tagging ()) | |
2678 | { | |
2679 | gdb::byte_vector tags; | |
2680 | CORE_ADDR addr = 0; | |
2681 | size_t len = 0; | |
2682 | int type = 0; | |
2683 | ||
2684 | require_running_or_return (own_buf); | |
2685 | ||
2686 | parse_fetch_memtags_request (own_buf, &addr, &len, &type); | |
2687 | ||
782c1ab8 | 2688 | bool ret = the_target->fetch_memtags (addr, len, tags, type); |
546b77fe LM |
2689 | |
2690 | if (ret) | |
2691 | ret = create_fetch_memtags_reply (own_buf, tags); | |
2692 | ||
782c1ab8 | 2693 | if (!ret) |
546b77fe LM |
2694 | write_enn (own_buf); |
2695 | ||
2696 | *new_packet_len_p = strlen (own_buf); | |
2697 | return; | |
2698 | } | |
2699 | ||
ce3a066d DJ |
2700 | /* Otherwise we didn't know what packet it was. Say we didn't |
2701 | understand it. */ | |
2702 | own_buf[0] = 0; | |
2703 | } | |
2704 | ||
ce1a5b52 | 2705 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2706 | static void resume (struct thread_resume *actions, size_t n); |
2707 | ||
649ebbca DE |
2708 | /* The callback that is passed to visit_actioned_threads. */ |
2709 | typedef int (visit_actioned_threads_callback_ftype) | |
2710 | (const struct thread_resume *, struct thread_info *); | |
2711 | ||
b7ea362b PA |
2712 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2713 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca | 2714 | is found or CALLBACK results false. |
eaddb425 | 2715 | Note: This function is itself a callback for find_thread. */ |
b7ea362b | 2716 | |
eaddb425 SM |
2717 | static bool |
2718 | visit_actioned_threads (thread_info *thread, | |
2719 | const struct thread_resume *actions, | |
2720 | size_t num_actions, | |
2721 | visit_actioned_threads_callback_ftype *callback) | |
b7ea362b | 2722 | { |
eaddb425 | 2723 | for (size_t i = 0; i < num_actions; i++) |
b7ea362b | 2724 | { |
649ebbca | 2725 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2726 | |
d7e15655 TT |
2727 | if (action->thread == minus_one_ptid |
2728 | || action->thread == thread->id | |
e99b03dc | 2729 | || ((action->thread.pid () |
9c80ecd6 | 2730 | == thread->id.pid ()) |
e38504b3 | 2731 | && action->thread.lwp () == -1)) |
b7ea362b | 2732 | { |
649ebbca | 2733 | if ((*callback) (action, thread)) |
eaddb425 | 2734 | return true; |
b7ea362b PA |
2735 | } |
2736 | } | |
2737 | ||
eaddb425 | 2738 | return false; |
b7ea362b PA |
2739 | } |
2740 | ||
2741 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2742 | status to report, report it now. */ | |
2743 | ||
2744 | static int | |
2745 | handle_pending_status (const struct thread_resume *resumption, | |
2746 | struct thread_info *thread) | |
2747 | { | |
c12a5089 | 2748 | client_state &cs = get_client_state (); |
b7ea362b PA |
2749 | if (thread->status_pending_p) |
2750 | { | |
2751 | thread->status_pending_p = 0; | |
2752 | ||
c12a5089 SC |
2753 | cs.last_status = thread->last_status; |
2754 | cs.last_ptid = thread->id; | |
c272a98c | 2755 | prepare_resume_reply (cs.own_buf, cs.last_ptid, cs.last_status); |
b7ea362b PA |
2756 | return 1; |
2757 | } | |
2758 | return 0; | |
2759 | } | |
ce1a5b52 | 2760 | |
64386c31 | 2761 | /* Parse vCont packets. */ |
5b3da067 | 2762 | static void |
5b1c542e | 2763 | handle_v_cont (char *own_buf) |
64386c31 | 2764 | { |
256642e8 | 2765 | const char *p; |
64386c31 | 2766 | int n = 0, i = 0; |
2bd7c093 | 2767 | struct thread_resume *resume_info; |
436252de | 2768 | struct thread_resume default_action { null_ptid }; |
64386c31 DJ |
2769 | |
2770 | /* Count the number of semicolons in the packet. There should be one | |
2771 | for every action. */ | |
2772 | p = &own_buf[5]; | |
2773 | while (p) | |
2774 | { | |
2775 | n++; | |
2776 | p++; | |
2777 | p = strchr (p, ';'); | |
2778 | } | |
2bd7c093 | 2779 | |
224c3ddb | 2780 | resume_info = (struct thread_resume *) malloc (n * sizeof (resume_info[0])); |
aef93bd7 DE |
2781 | if (resume_info == NULL) |
2782 | goto err; | |
64386c31 | 2783 | |
64386c31 | 2784 | p = &own_buf[5]; |
64386c31 DJ |
2785 | while (*p) |
2786 | { | |
2787 | p++; | |
2788 | ||
c2d6af84 PA |
2789 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2790 | ||
64386c31 | 2791 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2792 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2793 | else if (p[0] == 'r') |
2794 | resume_info[i].kind = resume_step; | |
64386c31 | 2795 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2796 | resume_info[i].kind = resume_continue; |
2797 | else if (p[0] == 't') | |
2798 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2799 | else |
2800 | goto err; | |
2801 | ||
2802 | if (p[0] == 'S' || p[0] == 'C') | |
2803 | { | |
256642e8 PA |
2804 | char *q; |
2805 | int sig = strtol (p + 1, &q, 16); | |
64386c31 DJ |
2806 | if (p == q) |
2807 | goto err; | |
2808 | p = q; | |
2809 | ||
e053fbc4 | 2810 | if (!gdb_signal_to_host_p ((enum gdb_signal) sig)) |
64386c31 | 2811 | goto err; |
e053fbc4 | 2812 | resume_info[i].sig = gdb_signal_to_host ((enum gdb_signal) sig); |
64386c31 | 2813 | } |
c2d6af84 PA |
2814 | else if (p[0] == 'r') |
2815 | { | |
6740dc9c | 2816 | ULONGEST addr; |
c2d6af84 | 2817 | |
6740dc9c PA |
2818 | p = unpack_varlen_hex (p + 1, &addr); |
2819 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2820 | |
6740dc9c PA |
2821 | if (*p != ',') |
2822 | goto err; | |
c2d6af84 | 2823 | |
6740dc9c PA |
2824 | p = unpack_varlen_hex (p + 1, &addr); |
2825 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2826 | } |
64386c31 DJ |
2827 | else |
2828 | { | |
64386c31 DJ |
2829 | p = p + 1; |
2830 | } | |
2831 | ||
2832 | if (p[0] == 0) | |
2833 | { | |
95954743 | 2834 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2835 | default_action = resume_info[i]; |
2836 | ||
2837 | /* Note: we don't increment i here, we'll overwrite this entry | |
2838 | the next time through. */ | |
2839 | } | |
2840 | else if (p[0] == ':') | |
2841 | { | |
256642e8 | 2842 | const char *q; |
95954743 | 2843 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2844 | |
64386c31 DJ |
2845 | if (p == q) |
2846 | goto err; | |
2847 | p = q; | |
2848 | if (p[0] != ';' && p[0] != 0) | |
2849 | goto err; | |
2850 | ||
95954743 | 2851 | resume_info[i].thread = ptid; |
a06660f7 | 2852 | |
64386c31 DJ |
2853 | i++; |
2854 | } | |
2855 | } | |
2856 | ||
2bd7c093 PA |
2857 | if (i < n) |
2858 | resume_info[i] = default_action; | |
64386c31 | 2859 | |
b7ea362b PA |
2860 | resume (resume_info, n); |
2861 | free (resume_info); | |
2862 | return; | |
2863 | ||
2864 | err: | |
2865 | write_enn (own_buf); | |
2866 | free (resume_info); | |
2867 | return; | |
2868 | } | |
2869 | ||
2870 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2871 | ||
2872 | static void | |
2873 | resume (struct thread_resume *actions, size_t num_actions) | |
2874 | { | |
c12a5089 | 2875 | client_state &cs = get_client_state (); |
bd99dc85 | 2876 | if (!non_stop) |
b7ea362b PA |
2877 | { |
2878 | /* Check if among the threads that GDB wants actioned, there's | |
2879 | one with a pending status to report. If so, skip actually | |
2880 | resuming/stopping and report the pending event | |
2881 | immediately. */ | |
649ebbca | 2882 | |
eaddb425 SM |
2883 | thread_info *thread_with_status = find_thread ([&] (thread_info *thread) |
2884 | { | |
2885 | return visit_actioned_threads (thread, actions, num_actions, | |
2886 | handle_pending_status); | |
2887 | }); | |
2888 | ||
2889 | if (thread_with_status != NULL) | |
b7ea362b | 2890 | return; |
bd99dc85 | 2891 | |
b7ea362b PA |
2892 | enable_async_io (); |
2893 | } | |
64386c31 | 2894 | |
52405d85 | 2895 | the_target->resume (actions, num_actions); |
64386c31 | 2896 | |
bd99dc85 | 2897 | if (non_stop) |
c12a5089 | 2898 | write_ok (cs.own_buf); |
bd99dc85 PA |
2899 | else |
2900 | { | |
c12a5089 | 2901 | cs.last_ptid = mywait (minus_one_ptid, &cs.last_status, 0, 1); |
ce1a5b52 | 2902 | |
183be222 | 2903 | if (cs.last_status.kind () == TARGET_WAITKIND_NO_RESUMED |
f2faf941 | 2904 | && !report_no_resumed) |
fa96cb38 | 2905 | { |
f2faf941 PA |
2906 | /* The client does not support this stop reply. At least |
2907 | return error. */ | |
c12a5089 | 2908 | sprintf (cs.own_buf, "E.No unwaited-for children left."); |
fa96cb38 PA |
2909 | disable_async_io (); |
2910 | return; | |
2911 | } | |
2912 | ||
183be222 SM |
2913 | if (cs.last_status.kind () != TARGET_WAITKIND_EXITED |
2914 | && cs.last_status.kind () != TARGET_WAITKIND_SIGNALLED | |
2915 | && cs.last_status.kind () != TARGET_WAITKIND_NO_RESUMED) | |
c12a5089 | 2916 | current_thread->last_status = cs.last_status; |
d20a8ad9 | 2917 | |
ce1a5b52 PA |
2918 | /* From the client's perspective, all-stop mode always stops all |
2919 | threads implicitly (and the target backend has already done | |
2920 | so by now). Tag all threads as "want-stopped", so we don't | |
2921 | resume them implicitly without the client telling us to. */ | |
2922 | gdb_wants_all_threads_stopped (); | |
c272a98c | 2923 | prepare_resume_reply (cs.own_buf, cs.last_ptid, cs.last_status); |
bd99dc85 | 2924 | disable_async_io (); |
6bd31874 | 2925 | |
183be222 SM |
2926 | if (cs.last_status.kind () == TARGET_WAITKIND_EXITED |
2927 | || cs.last_status.kind () == TARGET_WAITKIND_SIGNALLED) | |
dda83cd7 | 2928 | target_mourn_inferior (cs.last_ptid); |
bd99dc85 | 2929 | } |
64386c31 DJ |
2930 | } |
2931 | ||
482155e6 TBA |
2932 | /* Attach to a new program. */ |
2933 | static void | |
5b1c542e | 2934 | handle_v_attach (char *own_buf) |
2d717e4f | 2935 | { |
c12a5089 | 2936 | client_state &cs = get_client_state (); |
2d717e4f DJ |
2937 | int pid; |
2938 | ||
2939 | pid = strtol (own_buf + 8, NULL, 16); | |
50fa3001 | 2940 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2941 | { |
aeba519e PA |
2942 | /* Don't report shared library events after attaching, even if |
2943 | some libraries are preloaded. GDB will always poll the | |
2944 | library list. Avoids the "stopped by shared library event" | |
2945 | notice on the GDB side. */ | |
d171632f | 2946 | current_process ()->dlls_changed = false; |
bd99dc85 PA |
2947 | |
2948 | if (non_stop) | |
2949 | { | |
2950 | /* In non-stop, we don't send a resume reply. Stop events | |
2951 | will follow up using the normal notification | |
2952 | mechanism. */ | |
2953 | write_ok (own_buf); | |
2954 | } | |
2955 | else | |
c272a98c | 2956 | prepare_resume_reply (own_buf, cs.last_ptid, cs.last_status); |
2d717e4f DJ |
2957 | } |
2958 | else | |
482155e6 | 2959 | write_enn (own_buf); |
2d717e4f DJ |
2960 | } |
2961 | ||
482155e6 TBA |
2962 | /* Run a new program. */ |
2963 | static void | |
5b1c542e | 2964 | handle_v_run (char *own_buf) |
2d717e4f | 2965 | { |
c12a5089 | 2966 | client_state &cs = get_client_state (); |
7c5ded6a SDJ |
2967 | char *p, *next_p; |
2968 | std::vector<char *> new_argv; | |
2090129c | 2969 | char *new_program_name = NULL; |
cf6c1e71 | 2970 | int i; |
2d717e4f | 2971 | |
7c5ded6a | 2972 | for (i = 0, p = own_buf + strlen ("vRun;"); *p; p = next_p, ++i) |
2d717e4f DJ |
2973 | { |
2974 | next_p = strchr (p, ';'); | |
2975 | if (next_p == NULL) | |
2976 | next_p = p + strlen (p); | |
2977 | ||
2978 | if (i == 0 && p == next_p) | |
7c5ded6a SDJ |
2979 | { |
2980 | /* No program specified. */ | |
2090129c SDJ |
2981 | new_program_name = NULL; |
2982 | } | |
2983 | else if (p == next_p) | |
2984 | { | |
2985 | /* Empty argument. */ | |
bea571eb | 2986 | new_argv.push_back (xstrdup ("")); |
7c5ded6a | 2987 | } |
2d717e4f DJ |
2988 | else |
2989 | { | |
7c5ded6a | 2990 | size_t len = (next_p - p) / 2; |
2090129c | 2991 | /* ARG is the unquoted argument received via the RSP. */ |
7c5ded6a | 2992 | char *arg = (char *) xmalloc (len + 1); |
2090129c SDJ |
2993 | /* FULL_ARGS will contain the quoted version of ARG. */ |
2994 | char *full_arg = (char *) xmalloc ((len + 1) * 2); | |
2995 | /* These are pointers used to navigate the strings above. */ | |
2996 | char *tmp_arg = arg; | |
2997 | char *tmp_full_arg = full_arg; | |
2998 | int need_quote = 0; | |
7c5ded6a SDJ |
2999 | |
3000 | hex2bin (p, (gdb_byte *) arg, len); | |
3001 | arg[len] = '\0'; | |
2d717e4f | 3002 | |
2090129c SDJ |
3003 | while (*tmp_arg != '\0') |
3004 | { | |
3005 | switch (*tmp_arg) | |
3006 | { | |
3007 | case '\n': | |
3008 | /* Quote \n. */ | |
3009 | *tmp_full_arg = '\''; | |
3010 | ++tmp_full_arg; | |
3011 | need_quote = 1; | |
3012 | break; | |
3013 | ||
3014 | case '\'': | |
3015 | /* Quote single quote. */ | |
3016 | *tmp_full_arg = '\\'; | |
3017 | ++tmp_full_arg; | |
3018 | break; | |
3019 | ||
3020 | default: | |
3021 | break; | |
3022 | } | |
3023 | ||
3024 | *tmp_full_arg = *tmp_arg; | |
3025 | ++tmp_full_arg; | |
3026 | ++tmp_arg; | |
3027 | } | |
3028 | ||
3029 | if (need_quote) | |
3030 | *tmp_full_arg++ = '\''; | |
3031 | ||
3032 | /* Finish FULL_ARG and push it into the vector containing | |
3033 | the argv. */ | |
3034 | *tmp_full_arg = '\0'; | |
3035 | if (i == 0) | |
3036 | new_program_name = full_arg; | |
3037 | else | |
3038 | new_argv.push_back (full_arg); | |
3039 | xfree (arg); | |
3040 | } | |
2d717e4f DJ |
3041 | if (*next_p) |
3042 | next_p++; | |
2d717e4f | 3043 | } |
2d717e4f | 3044 | |
2090129c | 3045 | if (new_program_name == NULL) |
2d717e4f | 3046 | { |
f142445f DJ |
3047 | /* GDB didn't specify a program to run. Use the program from the |
3048 | last run with the new argument list. */ | |
25e3c82c | 3049 | if (program_path.get () == NULL) |
2d717e4f DJ |
3050 | { |
3051 | write_enn (own_buf); | |
7c5ded6a | 3052 | free_vector_argv (new_argv); |
482155e6 | 3053 | return; |
2d717e4f | 3054 | } |
2090129c SDJ |
3055 | } |
3056 | else | |
7ab2607f | 3057 | program_path.set (new_program_name); |
f142445f | 3058 | |
aef93bd7 | 3059 | /* Free the old argv and install the new one. */ |
2090129c SDJ |
3060 | free_vector_argv (program_args); |
3061 | program_args = new_argv; | |
3062 | ||
15295543 | 3063 | target_create_inferior (program_path.get (), program_args); |
2d717e4f | 3064 | |
183be222 | 3065 | if (cs.last_status.kind () == TARGET_WAITKIND_STOPPED) |
2d717e4f | 3066 | { |
c272a98c | 3067 | prepare_resume_reply (own_buf, cs.last_ptid, cs.last_status); |
bd99dc85 PA |
3068 | |
3069 | /* In non-stop, sending a resume reply doesn't set the general | |
3070 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
3071 | query which is the main thread of the new inferior. */ | |
3072 | if (non_stop) | |
c12a5089 | 3073 | cs.general_thread = cs.last_ptid; |
2d717e4f DJ |
3074 | } |
3075 | else | |
482155e6 | 3076 | write_enn (own_buf); |
2d717e4f DJ |
3077 | } |
3078 | ||
482155e6 TBA |
3079 | /* Kill process. */ |
3080 | static void | |
95954743 PA |
3081 | handle_v_kill (char *own_buf) |
3082 | { | |
c12a5089 | 3083 | client_state &cs = get_client_state (); |
95954743 PA |
3084 | int pid; |
3085 | char *p = &own_buf[6]; | |
c12a5089 | 3086 | if (cs.multi_process) |
0f54c268 PM |
3087 | pid = strtol (p, NULL, 16); |
3088 | else | |
3089 | pid = signal_pid; | |
a780ef4f PA |
3090 | |
3091 | process_info *proc = find_process_pid (pid); | |
3092 | ||
3093 | if (proc != nullptr && kill_inferior (proc) == 0) | |
95954743 | 3094 | { |
183be222 | 3095 | cs.last_status.set_signalled (GDB_SIGNAL_KILL); |
f2907e49 | 3096 | cs.last_ptid = ptid_t (pid); |
c12a5089 | 3097 | discard_queued_stop_replies (cs.last_ptid); |
95954743 | 3098 | write_ok (own_buf); |
95954743 PA |
3099 | } |
3100 | else | |
482155e6 | 3101 | write_enn (own_buf); |
95954743 PA |
3102 | } |
3103 | ||
64386c31 | 3104 | /* Handle all of the extended 'v' packets. */ |
28170b88 | 3105 | void |
5b1c542e | 3106 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 3107 | { |
c12a5089 | 3108 | client_state &cs = get_client_state (); |
db42f210 | 3109 | if (!disable_packet_vCont) |
64386c31 | 3110 | { |
de979965 PA |
3111 | if (strcmp (own_buf, "vCtrlC") == 0) |
3112 | { | |
52405d85 | 3113 | the_target->request_interrupt (); |
de979965 PA |
3114 | write_ok (own_buf); |
3115 | return; | |
3116 | } | |
3117 | ||
61012eef | 3118 | if (startswith (own_buf, "vCont;")) |
db42f210 | 3119 | { |
5b1c542e | 3120 | handle_v_cont (own_buf); |
db42f210 PA |
3121 | return; |
3122 | } | |
64386c31 | 3123 | |
61012eef | 3124 | if (startswith (own_buf, "vCont?")) |
db42f210 | 3125 | { |
750ce8d1 YQ |
3126 | strcpy (own_buf, "vCont;c;C;t"); |
3127 | ||
21536b36 YQ |
3128 | if (target_supports_hardware_single_step () |
3129 | || target_supports_software_single_step () | |
c12a5089 | 3130 | || !cs.vCont_supported) |
750ce8d1 | 3131 | { |
21536b36 YQ |
3132 | /* If target supports single step either by hardware or by |
3133 | software, add actions s and S to the list of supported | |
3134 | actions. On the other hand, if GDB doesn't request the | |
3135 | supported vCont actions in qSupported packet, add s and | |
3136 | S to the list too. */ | |
750ce8d1 YQ |
3137 | own_buf = own_buf + strlen (own_buf); |
3138 | strcpy (own_buf, ";s;S"); | |
3139 | } | |
3140 | ||
c2d6af84 PA |
3141 | if (target_supports_range_stepping ()) |
3142 | { | |
3143 | own_buf = own_buf + strlen (own_buf); | |
3144 | strcpy (own_buf, ";r"); | |
3145 | } | |
db42f210 PA |
3146 | return; |
3147 | } | |
64386c31 DJ |
3148 | } |
3149 | ||
61012eef | 3150 | if (startswith (own_buf, "vFile:") |
a6b151f1 DJ |
3151 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
3152 | return; | |
3153 | ||
61012eef | 3154 | if (startswith (own_buf, "vAttach;")) |
2d717e4f | 3155 | { |
c12a5089 | 3156 | if ((!extended_protocol || !cs.multi_process) && target_running ()) |
2d717e4f | 3157 | { |
fd96d250 PA |
3158 | fprintf (stderr, "Already debugging a process\n"); |
3159 | write_enn (own_buf); | |
3160 | return; | |
2d717e4f | 3161 | } |
5b1c542e | 3162 | handle_v_attach (own_buf); |
2d717e4f DJ |
3163 | return; |
3164 | } | |
3165 | ||
61012eef | 3166 | if (startswith (own_buf, "vRun;")) |
2d717e4f | 3167 | { |
c12a5089 | 3168 | if ((!extended_protocol || !cs.multi_process) && target_running ()) |
2d717e4f | 3169 | { |
fd96d250 PA |
3170 | fprintf (stderr, "Already debugging a process\n"); |
3171 | write_enn (own_buf); | |
3172 | return; | |
2d717e4f | 3173 | } |
5b1c542e | 3174 | handle_v_run (own_buf); |
2d717e4f DJ |
3175 | return; |
3176 | } | |
3177 | ||
61012eef | 3178 | if (startswith (own_buf, "vKill;")) |
95954743 PA |
3179 | { |
3180 | if (!target_running ()) | |
3181 | { | |
3182 | fprintf (stderr, "No process to kill\n"); | |
3183 | write_enn (own_buf); | |
3184 | return; | |
3185 | } | |
3186 | handle_v_kill (own_buf); | |
3187 | return; | |
3188 | } | |
3189 | ||
14a00470 YQ |
3190 | if (handle_notif_ack (own_buf, packet_len)) |
3191 | return; | |
bd99dc85 | 3192 | |
64386c31 DJ |
3193 | /* Otherwise we didn't know what packet it was. Say we didn't |
3194 | understand it. */ | |
3195 | own_buf[0] = 0; | |
3196 | return; | |
3197 | } | |
3198 | ||
0bfdf32f | 3199 | /* Resume thread and wait for another event. In non-stop mode, |
33b5899f | 3200 | don't really wait here, but return immediately to the event |
bd99dc85 | 3201 | loop. */ |
1fd7cdc2 | 3202 | static void |
5b1c542e | 3203 | myresume (char *own_buf, int step, int sig) |
64386c31 | 3204 | { |
c12a5089 | 3205 | client_state &cs = get_client_state (); |
64386c31 DJ |
3206 | struct thread_resume resume_info[2]; |
3207 | int n = 0; | |
2bd7c093 | 3208 | int valid_cont_thread; |
a20d5e98 | 3209 | |
d7e15655 TT |
3210 | valid_cont_thread = (cs.cont_thread != null_ptid |
3211 | && cs.cont_thread != minus_one_ptid); | |
2bd7c093 PA |
3212 | |
3213 | if (step || sig || valid_cont_thread) | |
64386c31 | 3214 | { |
fbd5db48 | 3215 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
3216 | if (step) |
3217 | resume_info[0].kind = resume_step; | |
3218 | else | |
3219 | resume_info[0].kind = resume_continue; | |
64386c31 | 3220 | resume_info[0].sig = sig; |
64386c31 DJ |
3221 | n++; |
3222 | } | |
2bd7c093 PA |
3223 | |
3224 | if (!valid_cont_thread) | |
3225 | { | |
95954743 | 3226 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 3227 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
3228 | resume_info[n].sig = 0; |
3229 | n++; | |
3230 | } | |
64386c31 | 3231 | |
b7ea362b | 3232 | resume (resume_info, n); |
bd99dc85 PA |
3233 | } |
3234 | ||
f0045347 | 3235 | /* Callback for for_each_thread. Make a new stop reply for each |
bd99dc85 PA |
3236 | stopped thread. */ |
3237 | ||
99078d34 SM |
3238 | static void |
3239 | queue_stop_reply_callback (thread_info *thread) | |
bd99dc85 | 3240 | { |
8336d594 PA |
3241 | /* For now, assume targets that don't have this callback also don't |
3242 | manage the thread's last_status field. */ | |
52405d85 | 3243 | if (!the_target->supports_thread_stopped ()) |
95954743 | 3244 | { |
b494cdff | 3245 | struct vstop_notif *new_notif = new struct vstop_notif; |
14a00470 | 3246 | |
9c80ecd6 | 3247 | new_notif->ptid = thread->id; |
14a00470 | 3248 | new_notif->status = thread->last_status; |
8336d594 PA |
3249 | /* Pass the last stop reply back to GDB, but don't notify |
3250 | yet. */ | |
b494cdff | 3251 | notif_event_enque (¬if_stop, new_notif); |
8336d594 PA |
3252 | } |
3253 | else | |
3254 | { | |
68119632 | 3255 | if (target_thread_stopped (thread)) |
8336d594 | 3256 | { |
c058728c SM |
3257 | threads_debug_printf |
3258 | ("Reporting thread %s as already stopped with %s", | |
3259 | target_pid_to_str (thread->id).c_str (), | |
3260 | thread->last_status.to_string ().c_str ()); | |
8336d594 | 3261 | |
183be222 | 3262 | gdb_assert (thread->last_status.kind () != TARGET_WAITKIND_IGNORE); |
d20a8ad9 | 3263 | |
8336d594 PA |
3264 | /* Pass the last stop reply back to GDB, but don't notify |
3265 | yet. */ | |
c272a98c | 3266 | queue_stop_reply (thread->id, thread->last_status); |
8336d594 | 3267 | } |
95954743 | 3268 | } |
64386c31 DJ |
3269 | } |
3270 | ||
ce1a5b52 PA |
3271 | /* Set this inferior threads's state as "want-stopped". We won't |
3272 | resume this thread until the client gives us another action for | |
3273 | it. */ | |
8336d594 PA |
3274 | |
3275 | static void | |
9c80ecd6 | 3276 | gdb_wants_thread_stopped (thread_info *thread) |
8336d594 | 3277 | { |
8336d594 PA |
3278 | thread->last_resume_kind = resume_stop; |
3279 | ||
183be222 | 3280 | if (thread->last_status.kind () == TARGET_WAITKIND_IGNORE) |
8336d594 | 3281 | { |
ce1a5b52 PA |
3282 | /* Most threads are stopped implicitly (all-stop); tag that with |
3283 | signal 0. */ | |
183be222 | 3284 | thread->last_status.set_stopped (GDB_SIGNAL_0); |
8336d594 PA |
3285 | } |
3286 | } | |
3287 | ||
3288 | /* Set all threads' states as "want-stopped". */ | |
3289 | ||
3290 | static void | |
3291 | gdb_wants_all_threads_stopped (void) | |
3292 | { | |
f0045347 | 3293 | for_each_thread (gdb_wants_thread_stopped); |
8336d594 PA |
3294 | } |
3295 | ||
f0045347 | 3296 | /* Callback for for_each_thread. If the thread is stopped with an |
b7ea362b PA |
3297 | interesting event, mark it as having a pending event. */ |
3298 | ||
3299 | static void | |
9c80ecd6 | 3300 | set_pending_status_callback (thread_info *thread) |
b7ea362b | 3301 | { |
183be222 SM |
3302 | if (thread->last_status.kind () != TARGET_WAITKIND_STOPPED |
3303 | || (thread->last_status.sig () != GDB_SIGNAL_0 | |
b7ea362b PA |
3304 | /* A breakpoint, watchpoint or finished step from a previous |
3305 | GDB run isn't considered interesting for a new GDB run. | |
3306 | If we left those pending, the new GDB could consider them | |
3307 | random SIGTRAPs. This leaves out real async traps. We'd | |
3308 | have to peek into the (target-specific) siginfo to | |
3309 | distinguish those. */ | |
183be222 | 3310 | && thread->last_status.sig () != GDB_SIGNAL_TRAP)) |
b7ea362b PA |
3311 | thread->status_pending_p = 1; |
3312 | } | |
3313 | ||
5b1c542e PA |
3314 | /* Status handler for the '?' packet. */ |
3315 | ||
3316 | static void | |
3317 | handle_status (char *own_buf) | |
3318 | { | |
c12a5089 SC |
3319 | client_state &cs = get_client_state (); |
3320 | ||
8336d594 | 3321 | /* GDB is connected, don't forward events to the target anymore. */ |
9179355e SM |
3322 | for_each_process ([] (process_info *process) { |
3323 | process->gdb_detached = 0; | |
3324 | }); | |
bd99dc85 PA |
3325 | |
3326 | /* In non-stop mode, we must send a stop reply for each stopped | |
3327 | thread. In all-stop mode, just send one for the first stopped | |
3328 | thread we find. */ | |
3329 | ||
3330 | if (non_stop) | |
3331 | { | |
99078d34 | 3332 | for_each_thread (queue_stop_reply_callback); |
bd99dc85 PA |
3333 | |
3334 | /* The first is sent immediatly. OK is sent if there is no | |
3335 | stopped thread, which is the same handling of the vStopped | |
3336 | packet (by design). */ | |
c12a5089 | 3337 | notif_write_event (¬if_stop, cs.own_buf); |
bd99dc85 | 3338 | } |
5b1c542e | 3339 | else |
bd99dc85 | 3340 | { |
9c80ecd6 | 3341 | thread_info *thread = NULL; |
b7ea362b | 3342 | |
29e8dc09 | 3343 | target_pause_all (false); |
5c9eb2f2 | 3344 | target_stabilize_threads (); |
8336d594 PA |
3345 | gdb_wants_all_threads_stopped (); |
3346 | ||
b7ea362b PA |
3347 | /* We can only report one status, but we might be coming out of |
3348 | non-stop -- if more than one thread is stopped with | |
3349 | interesting events, leave events for the threads we're not | |
3350 | reporting now pending. They'll be reported the next time the | |
3351 | threads are resumed. Start by marking all interesting events | |
3352 | as pending. */ | |
f0045347 | 3353 | for_each_thread (set_pending_status_callback); |
b7ea362b PA |
3354 | |
3355 | /* Prefer the last thread that reported an event to GDB (even if | |
3356 | that was a GDB_SIGNAL_TRAP). */ | |
183be222 SM |
3357 | if (cs.last_status.kind () != TARGET_WAITKIND_IGNORE |
3358 | && cs.last_status.kind () != TARGET_WAITKIND_EXITED | |
3359 | && cs.last_status.kind () != TARGET_WAITKIND_SIGNALLED) | |
c12a5089 | 3360 | thread = find_thread_ptid (cs.last_ptid); |
b7ea362b PA |
3361 | |
3362 | /* If the last event thread is not found for some reason, look | |
3363 | for some other thread that might have an event to report. */ | |
3364 | if (thread == NULL) | |
da4ae14a | 3365 | thread = find_thread ([] (thread_info *thr_arg) |
99078d34 | 3366 | { |
da4ae14a | 3367 | return thr_arg->status_pending_p; |
99078d34 | 3368 | }); |
b7ea362b PA |
3369 | |
3370 | /* If we're still out of luck, simply pick the first thread in | |
3371 | the thread list. */ | |
3372 | if (thread == NULL) | |
9c80ecd6 | 3373 | thread = get_first_thread (); |
b7ea362b PA |
3374 | |
3375 | if (thread != NULL) | |
8336d594 | 3376 | { |
b7ea362b PA |
3377 | struct thread_info *tp = (struct thread_info *) thread; |
3378 | ||
3379 | /* We're reporting this event, so it's no longer | |
3380 | pending. */ | |
3381 | tp->status_pending_p = 0; | |
3382 | ||
3383 | /* GDB assumes the current thread is the thread we're | |
3384 | reporting the status for. */ | |
c12a5089 | 3385 | cs.general_thread = thread->id; |
f557a88a | 3386 | set_desired_thread (); |
8336d594 | 3387 | |
183be222 | 3388 | gdb_assert (tp->last_status.kind () != TARGET_WAITKIND_IGNORE); |
c272a98c | 3389 | prepare_resume_reply (own_buf, tp->id, tp->last_status); |
8336d594 | 3390 | } |
bd99dc85 PA |
3391 | else |
3392 | strcpy (own_buf, "W00"); | |
3393 | } | |
5b1c542e PA |
3394 | } |
3395 | ||
dd24457d DJ |
3396 | static void |
3397 | gdbserver_version (void) | |
3398 | { | |
c16158bc | 3399 | printf ("GNU gdbserver %s%s\n" |
e1ca5534 | 3400 | "Copyright (C) 2023 Free Software Foundation, Inc.\n" |
493e2a69 MS |
3401 | "gdbserver is free software, covered by the " |
3402 | "GNU General Public License.\n" | |
dd24457d | 3403 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 3404 | PKGVERSION, version, host_name); |
dd24457d DJ |
3405 | } |
3406 | ||
0bc68c49 | 3407 | static void |
c16158bc | 3408 | gdbserver_usage (FILE *stream) |
0bc68c49 | 3409 | { |
c16158bc JM |
3410 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
3411 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
3412 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
3413 | "\n" | |
41f98f02 PA |
3414 | "COMM may either be a tty device (for serial debugging),\n" |
3415 | "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n" | |
3416 | "stdin/stdout of gdbserver.\n" | |
3417 | "PROG is the executable program. ARGS are arguments passed to inferior.\n" | |
3418 | "PID is the process ID to attach to, when --attach is specified.\n" | |
3419 | "\n" | |
3420 | "Operating modes:\n" | |
3421 | "\n" | |
3422 | " --attach Attach to running process PID.\n" | |
3423 | " --multi Start server without a specific program, and\n" | |
3424 | " only quit when explicitly commanded.\n" | |
3425 | " --once Exit after the first connection has closed.\n" | |
3426 | " --help Print this message and then exit.\n" | |
3427 | " --version Display version information and exit.\n" | |
3428 | "\n" | |
3429 | "Other options:\n" | |
3430 | "\n" | |
3431 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" | |
3432 | " --disable-randomization\n" | |
3433 | " Run PROG with address space randomization disabled.\n" | |
3434 | " --no-disable-randomization\n" | |
3435 | " Don't disable address space randomization when\n" | |
3436 | " starting PROG.\n" | |
aefd8b33 SDJ |
3437 | " --startup-with-shell\n" |
3438 | " Start PROG using a shell. I.e., execs a shell that\n" | |
3439 | " then execs PROG. (default)\n" | |
3440 | " --no-startup-with-shell\n" | |
3441 | " Exec PROG directly instead of using a shell.\n" | |
3442 | " Disables argument globbing and variable substitution\n" | |
3443 | " on UNIX-like systems.\n" | |
41f98f02 PA |
3444 | "\n" |
3445 | "Debug options:\n" | |
c16158bc | 3446 | "\n" |
62709adf | 3447 | " --debug Enable general debugging output.\n" |
227a9e65 | 3448 | " --debug-format=OPT1[,OPT2,...]\n" |
87ce2a04 DE |
3449 | " Specify extra content in debugging output.\n" |
3450 | " Options:\n" | |
3451 | " all\n" | |
3452 | " none\n" | |
87ce2a04 | 3453 | " timestamp\n" |
62709adf | 3454 | " --remote-debug Enable remote protocol debugging output.\n" |
6b01403b | 3455 | " --event-loop-debug Enable event loop debugging output.\n" |
227a9e65 | 3456 | " --disable-packet=OPT1[,OPT2,...]\n" |
41f98f02 PA |
3457 | " Disable support for RSP packets or features.\n" |
3458 | " Options:\n" | |
81fdd7ac | 3459 | " vCont, T, Tthread, qC, qfThreadInfo and \n" |
41f98f02 PA |
3460 | " threads (disable all threading packets).\n" |
3461 | "\n" | |
3462 | "For more information, consult the GDB manual (available as on-line \n" | |
3463 | "info or a printed manual).\n"); | |
c16158bc JM |
3464 | if (REPORT_BUGS_TO[0] && stream == stdout) |
3465 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
3466 | } |
3467 | ||
db42f210 PA |
3468 | static void |
3469 | gdbserver_show_disableable (FILE *stream) | |
3470 | { | |
3471 | fprintf (stream, "Disableable packets:\n" | |
3472 | " vCont \tAll vCont packets\n" | |
3473 | " qC \tQuerying the current thread\n" | |
3474 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
3475 | " Tthread \tPassing the thread specifier in the " |
3476 | "T stop reply packet\n" | |
81fdd7ac AB |
3477 | " threads \tAll of the above\n" |
3478 | " T \tAll 'T' packets\n"); | |
db42f210 PA |
3479 | } |
3480 | ||
55d7aec8 TT |
3481 | /* Start up the event loop. This is the entry point to the event |
3482 | loop. */ | |
3483 | ||
3484 | static void | |
3485 | start_event_loop () | |
3486 | { | |
3487 | /* Loop until there is nothing to do. This is the entry point to | |
3488 | the event loop engine. If nothing is ready at this time, wait | |
3489 | for something to happen (via wait_for_event), then process it. | |
3490 | Return when there are no longer event sources to wait for. */ | |
3491 | ||
3492 | keep_processing_events = true; | |
3493 | while (keep_processing_events) | |
3494 | { | |
3495 | /* Any events already waiting in the queue? */ | |
3496 | int res = gdb_do_one_event (); | |
3497 | ||
3498 | /* Was there an error? */ | |
3499 | if (res == -1) | |
3500 | break; | |
3501 | } | |
3502 | ||
3503 | /* We are done with the event loop. There are no more event sources | |
3504 | to listen to. So we exit gdbserver. */ | |
3505 | } | |
3506 | ||
95954743 | 3507 | static void |
9179355e | 3508 | kill_inferior_callback (process_info *process) |
95954743 | 3509 | { |
a780ef4f PA |
3510 | kill_inferior (process); |
3511 | discard_queued_stop_replies (ptid_t (process->pid)); | |
95954743 PA |
3512 | } |
3513 | ||
9f767825 DE |
3514 | /* Call this when exiting gdbserver with possible inferiors that need |
3515 | to be killed or detached from. */ | |
3516 | ||
3517 | static void | |
3518 | detach_or_kill_for_exit (void) | |
3519 | { | |
3520 | /* First print a list of the inferiors we will be killing/detaching. | |
3521 | This is to assist the user, for example, in case the inferior unexpectedly | |
3522 | dies after we exit: did we screw up or did the inferior exit on its own? | |
3523 | Having this info will save some head-scratching. */ | |
3524 | ||
3525 | if (have_started_inferiors_p ()) | |
3526 | { | |
3527 | fprintf (stderr, "Killing process(es):"); | |
9179355e SM |
3528 | |
3529 | for_each_process ([] (process_info *process) { | |
3530 | if (!process->attached) | |
3531 | fprintf (stderr, " %d", process->pid); | |
3532 | }); | |
3533 | ||
9f767825 DE |
3534 | fprintf (stderr, "\n"); |
3535 | } | |
3536 | if (have_attached_inferiors_p ()) | |
3537 | { | |
3538 | fprintf (stderr, "Detaching process(es):"); | |
9179355e SM |
3539 | |
3540 | for_each_process ([] (process_info *process) { | |
3541 | if (process->attached) | |
3542 | fprintf (stderr, " %d", process->pid); | |
3543 | }); | |
3544 | ||
9f767825 DE |
3545 | fprintf (stderr, "\n"); |
3546 | } | |
3547 | ||
3548 | /* Now we can kill or detach the inferiors. */ | |
9179355e SM |
3549 | for_each_process ([] (process_info *process) { |
3550 | int pid = process->pid; | |
3551 | ||
3552 | if (process->attached) | |
ef2ddb33 | 3553 | detach_inferior (process); |
9179355e | 3554 | else |
a780ef4f | 3555 | kill_inferior (process); |
9f767825 | 3556 | |
f2907e49 | 3557 | discard_queued_stop_replies (ptid_t (pid)); |
9179355e | 3558 | }); |
9f767825 DE |
3559 | } |
3560 | ||
860789c7 GB |
3561 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
3562 | static int exit_code; | |
3563 | ||
37991b4f TT |
3564 | /* Wrapper for detach_or_kill_for_exit that catches and prints |
3565 | errors. */ | |
860789c7 GB |
3566 | |
3567 | static void | |
37991b4f | 3568 | detach_or_kill_for_exit_cleanup () |
860789c7 | 3569 | { |
a70b8144 | 3570 | try |
860789c7 GB |
3571 | { |
3572 | detach_or_kill_for_exit (); | |
3573 | } | |
230d2906 | 3574 | catch (const gdb_exception &exception) |
860789c7 GB |
3575 | { |
3576 | fflush (stdout); | |
3d6e9d23 TT |
3577 | fprintf (stderr, "Detach or kill failed: %s\n", |
3578 | exception.what ()); | |
860789c7 GB |
3579 | exit_code = 1; |
3580 | } | |
3581 | } | |
3582 | ||
c2cfa654 LM |
3583 | #if GDB_SELF_TEST |
3584 | ||
3585 | namespace selftests { | |
3586 | ||
3587 | static void | |
3588 | test_memory_tagging_functions (void) | |
3589 | { | |
3590 | /* Setup testing. */ | |
3591 | gdb::char_vector packet; | |
3592 | gdb::byte_vector tags, bv; | |
3593 | std::string expected; | |
3594 | packet.resize (32000); | |
3595 | CORE_ADDR addr; | |
3596 | size_t len; | |
3597 | int type; | |
3598 | ||
3599 | /* Test parsing a qMemTags request. */ | |
3600 | ||
3601 | /* Valid request, addr, len and type updated. */ | |
3602 | addr = 0xff; | |
3603 | len = 255; | |
3604 | type = 255; | |
3605 | strcpy (packet.data (), "qMemTags:0,0:0"); | |
3606 | parse_fetch_memtags_request (packet.data (), &addr, &len, &type); | |
3607 | SELF_CHECK (addr == 0 && len == 0 && type == 0); | |
3608 | ||
3609 | /* Valid request, addr, len and type updated. */ | |
3610 | addr = 0; | |
3611 | len = 0; | |
3612 | type = 0; | |
3613 | strcpy (packet.data (), "qMemTags:deadbeef,ff:5"); | |
3614 | parse_fetch_memtags_request (packet.data (), &addr, &len, &type); | |
3615 | SELF_CHECK (addr == 0xdeadbeef && len == 255 && type == 5); | |
3616 | ||
3617 | /* Test creating a qMemTags reply. */ | |
3618 | ||
3619 | /* Non-empty tag data. */ | |
3620 | bv.resize (0); | |
3621 | ||
3622 | for (int i = 0; i < 5; i++) | |
3623 | bv.push_back (i); | |
3624 | ||
3625 | expected = "m0001020304"; | |
3626 | SELF_CHECK (create_fetch_memtags_reply (packet.data (), bv) == true); | |
3627 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
3628 | ||
3629 | /* Test parsing a QMemTags request. */ | |
3630 | ||
3631 | /* Valid request and empty tag data: addr, len, type and tags updated. */ | |
3632 | addr = 0xff; | |
3633 | len = 255; | |
3634 | type = 255; | |
3635 | tags.resize (5); | |
3636 | strcpy (packet.data (), "QMemTags:0,0:0:"); | |
3637 | SELF_CHECK (parse_store_memtags_request (packet.data (), | |
3638 | &addr, &len, tags, &type) == true); | |
3639 | SELF_CHECK (addr == 0 && len == 0 && type == 0 && tags.size () == 0); | |
3640 | ||
3641 | /* Valid request and non-empty tag data: addr, len, type | |
3642 | and tags updated. */ | |
3643 | addr = 0; | |
3644 | len = 0; | |
3645 | type = 0; | |
3646 | tags.resize (0); | |
3647 | strcpy (packet.data (), | |
3648 | "QMemTags:deadbeef,ff:5:0001020304"); | |
3649 | SELF_CHECK (parse_store_memtags_request (packet.data (), &addr, &len, tags, | |
3650 | &type) == true); | |
3651 | SELF_CHECK (addr == 0xdeadbeef && len == 255 && type == 5 | |
3652 | && tags.size () == 5); | |
3653 | } | |
3654 | ||
3655 | } // namespace selftests | |
3656 | #endif /* GDB_SELF_TEST */ | |
3657 | ||
860789c7 GB |
3658 | /* Main function. This is called by the real "main" function, |
3659 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3660 | ||
3661 | static void ATTRIBUTE_NORETURN | |
3662 | captured_main (int argc, char *argv[]) | |
c906108c | 3663 | { |
0729219d DJ |
3664 | int bad_attach; |
3665 | int pid; | |
fb32b4f7 PA |
3666 | char *arg_end; |
3667 | const char *port = NULL; | |
2d717e4f | 3668 | char **next_arg = &argv[1]; |
89dc0afd JK |
3669 | volatile int multi_mode = 0; |
3670 | volatile int attach = 0; | |
2d717e4f | 3671 | int was_running; |
6d580b63 | 3672 | bool selftest = false; |
605fd3c6 | 3673 | #if GDB_SELF_TEST |
ece5bc8a | 3674 | std::vector<const char *> selftest_filters; |
c2cfa654 LM |
3675 | |
3676 | selftests::register_test ("remote_memory_tagging", | |
3677 | selftests::test_memory_tagging_functions); | |
605fd3c6 | 3678 | #endif |
c906108c | 3679 | |
b4987c95 | 3680 | current_directory = getcwd (NULL, 0); |
c12a5089 SC |
3681 | client_state &cs = get_client_state (); |
3682 | ||
b4987c95 SDJ |
3683 | if (current_directory == NULL) |
3684 | { | |
81561546 | 3685 | error (_("Could not find current working directory: %s"), |
b4987c95 SDJ |
3686 | safe_strerror (errno)); |
3687 | } | |
3688 | ||
2d717e4f | 3689 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3690 | { |
2d717e4f DJ |
3691 | if (strcmp (*next_arg, "--version") == 0) |
3692 | { | |
3693 | gdbserver_version (); | |
3694 | exit (0); | |
3695 | } | |
3696 | else if (strcmp (*next_arg, "--help") == 0) | |
3697 | { | |
c16158bc | 3698 | gdbserver_usage (stdout); |
2d717e4f DJ |
3699 | exit (0); |
3700 | } | |
3701 | else if (strcmp (*next_arg, "--attach") == 0) | |
3702 | attach = 1; | |
3703 | else if (strcmp (*next_arg, "--multi") == 0) | |
3704 | multi_mode = 1; | |
ccd213ac DJ |
3705 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3706 | { | |
7c5ded6a SDJ |
3707 | char **tmp; |
3708 | ||
ccd213ac DJ |
3709 | next_arg++; |
3710 | ||
7c5ded6a | 3711 | tmp = next_arg; |
ccd213ac | 3712 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) |
7c5ded6a | 3713 | { |
2090129c SDJ |
3714 | wrapper_argv += *next_arg; |
3715 | wrapper_argv += ' '; | |
7c5ded6a SDJ |
3716 | next_arg++; |
3717 | } | |
ccd213ac | 3718 | |
2090129c SDJ |
3719 | if (!wrapper_argv.empty ()) |
3720 | { | |
3721 | /* Erase the last whitespace. */ | |
3722 | wrapper_argv.erase (wrapper_argv.end () - 1); | |
3723 | } | |
3724 | ||
7c5ded6a | 3725 | if (next_arg == tmp || *next_arg == NULL) |
ccd213ac | 3726 | { |
c16158bc | 3727 | gdbserver_usage (stderr); |
ccd213ac DJ |
3728 | exit (1); |
3729 | } | |
3730 | ||
3731 | /* Consume the "--". */ | |
3732 | *next_arg = NULL; | |
3733 | } | |
2d717e4f | 3734 | else if (strcmp (*next_arg, "--debug") == 0) |
c68665c7 | 3735 | debug_threads = true; |
61012eef | 3736 | else if (startswith (*next_arg, "--debug-format=")) |
87ce2a04 | 3737 | { |
2cc05030 | 3738 | std::string error_msg |
87ce2a04 DE |
3739 | = parse_debug_format_options ((*next_arg) |
3740 | + sizeof ("--debug-format=") - 1, 0); | |
3741 | ||
2cc05030 | 3742 | if (!error_msg.empty ()) |
87ce2a04 | 3743 | { |
2cc05030 | 3744 | fprintf (stderr, "%s", error_msg.c_str ()); |
87ce2a04 DE |
3745 | exit (1); |
3746 | } | |
3747 | } | |
62709adf | 3748 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
91f94053 | 3749 | remote_debug = true; |
6b01403b SM |
3750 | else if (strcmp (*next_arg, "--event-loop-debug") == 0) |
3751 | debug_event_loop = debug_event_loop_kind::ALL; | |
aeb2e706 AH |
3752 | else if (startswith (*next_arg, "--debug-file=")) |
3753 | debug_set_output ((*next_arg) + sizeof ("--debug-file=") -1); | |
db42f210 PA |
3754 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3755 | { | |
3756 | gdbserver_show_disableable (stdout); | |
3757 | exit (0); | |
3758 | } | |
61012eef | 3759 | else if (startswith (*next_arg, "--disable-packet=")) |
db42f210 | 3760 | { |
ca3a04f6 CB |
3761 | char *packets = *next_arg += sizeof ("--disable-packet=") - 1; |
3762 | char *saveptr; | |
3763 | for (char *tok = strtok_r (packets, ",", &saveptr); | |
db42f210 | 3764 | tok != NULL; |
ca3a04f6 | 3765 | tok = strtok_r (NULL, ",", &saveptr)) |
db42f210 PA |
3766 | { |
3767 | if (strcmp ("vCont", tok) == 0) | |
3e6ec53a | 3768 | disable_packet_vCont = true; |
db42f210 | 3769 | else if (strcmp ("Tthread", tok) == 0) |
3e6ec53a | 3770 | disable_packet_Tthread = true; |
db42f210 | 3771 | else if (strcmp ("qC", tok) == 0) |
3e6ec53a | 3772 | disable_packet_qC = true; |
db42f210 | 3773 | else if (strcmp ("qfThreadInfo", tok) == 0) |
3e6ec53a | 3774 | disable_packet_qfThreadInfo = true; |
442131c1 AB |
3775 | else if (strcmp ("T", tok) == 0) |
3776 | disable_packet_T = true; | |
db42f210 PA |
3777 | else if (strcmp ("threads", tok) == 0) |
3778 | { | |
3e6ec53a CB |
3779 | disable_packet_vCont = true; |
3780 | disable_packet_Tthread = true; | |
3781 | disable_packet_qC = true; | |
3782 | disable_packet_qfThreadInfo = true; | |
db42f210 PA |
3783 | } |
3784 | else | |
3785 | { | |
3786 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3787 | tok); | |
3788 | gdbserver_show_disableable (stderr); | |
3789 | exit (1); | |
3790 | } | |
3791 | } | |
3792 | } | |
e0f9f062 DE |
3793 | else if (strcmp (*next_arg, "-") == 0) |
3794 | { | |
3795 | /* "-" specifies a stdio connection and is a form of port | |
3796 | specification. */ | |
fb32b4f7 PA |
3797 | port = STDIO_CONNECTION_NAME; |
3798 | next_arg++; | |
e0f9f062 DE |
3799 | break; |
3800 | } | |
03583c20 | 3801 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
c12a5089 | 3802 | cs.disable_randomization = 1; |
03583c20 | 3803 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) |
c12a5089 | 3804 | cs.disable_randomization = 0; |
aefd8b33 SDJ |
3805 | else if (strcmp (*next_arg, "--startup-with-shell") == 0) |
3806 | startup_with_shell = true; | |
3807 | else if (strcmp (*next_arg, "--no-startup-with-shell") == 0) | |
3808 | startup_with_shell = false; | |
03f2bd59 | 3809 | else if (strcmp (*next_arg, "--once") == 0) |
3e6ec53a | 3810 | run_once = true; |
6d580b63 YQ |
3811 | else if (strcmp (*next_arg, "--selftest") == 0) |
3812 | selftest = true; | |
1526853e SM |
3813 | else if (startswith (*next_arg, "--selftest=")) |
3814 | { | |
3815 | selftest = true; | |
ece5bc8a | 3816 | |
605fd3c6 | 3817 | #if GDB_SELF_TEST |
ece5bc8a SM |
3818 | const char *filter = *next_arg + strlen ("--selftest="); |
3819 | if (*filter == '\0') | |
3820 | { | |
3821 | fprintf (stderr, _("Error: selftest filter is empty.\n")); | |
3822 | exit (1); | |
3823 | } | |
3824 | ||
3825 | selftest_filters.push_back (filter); | |
605fd3c6 | 3826 | #endif |
1526853e | 3827 | } |
2d717e4f DJ |
3828 | else |
3829 | { | |
3830 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3831 | exit (1); | |
3832 | } | |
dd24457d | 3833 | |
2d717e4f DJ |
3834 | next_arg++; |
3835 | continue; | |
dd24457d DJ |
3836 | } |
3837 | ||
fb32b4f7 PA |
3838 | if (port == NULL) |
3839 | { | |
3840 | port = *next_arg; | |
3841 | next_arg++; | |
3842 | } | |
6d580b63 YQ |
3843 | if ((port == NULL || (!attach && !multi_mode && *next_arg == NULL)) |
3844 | && !selftest) | |
2d717e4f | 3845 | { |
c16158bc | 3846 | gdbserver_usage (stderr); |
2d717e4f DJ |
3847 | exit (1); |
3848 | } | |
3849 | ||
602e3198 JK |
3850 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3851 | opened by remote_prepare. */ | |
3852 | notice_open_fds (); | |
3853 | ||
e379cee6 | 3854 | save_original_signals_state (false); |
f348d89a | 3855 | |
e0f9f062 DE |
3856 | /* We need to know whether the remote connection is stdio before |
3857 | starting the inferior. Inferiors created in this scenario have | |
3858 | stdin,stdout redirected. So do this here before we call | |
3859 | start_inferior. */ | |
6d580b63 YQ |
3860 | if (port != NULL) |
3861 | remote_prepare (port); | |
e0f9f062 | 3862 | |
0729219d DJ |
3863 | bad_attach = 0; |
3864 | pid = 0; | |
2d717e4f DJ |
3865 | |
3866 | /* --attach used to come after PORT, so allow it there for | |
3867 | compatibility. */ | |
3868 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3869 | { |
2d717e4f DJ |
3870 | attach = 1; |
3871 | next_arg++; | |
45b7b345 DJ |
3872 | } |
3873 | ||
2d717e4f DJ |
3874 | if (attach |
3875 | && (*next_arg == NULL | |
3876 | || (*next_arg)[0] == '\0' | |
3877 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3878 | || *arg_end != '\0' | |
3879 | || next_arg[1] != NULL)) | |
3880 | bad_attach = 1; | |
3881 | ||
3882 | if (bad_attach) | |
dd24457d | 3883 | { |
c16158bc | 3884 | gdbserver_usage (stderr); |
dd24457d DJ |
3885 | exit (1); |
3886 | } | |
c906108c | 3887 | |
2090129c | 3888 | /* Gather information about the environment. */ |
9a6c7d9c | 3889 | our_environ = gdb_environ::from_host_environ (); |
2090129c | 3890 | |
a20d5e98 | 3891 | initialize_async_io (); |
4ce44c66 | 3892 | initialize_low (); |
2090129c | 3893 | have_job_control (); |
219f2f23 PA |
3894 | if (target_supports_tracepoints ()) |
3895 | initialize_tracepoint (); | |
4ce44c66 | 3896 | |
224c3ddb | 3897 | mem_buf = (unsigned char *) xmalloc (PBUFSIZ); |
0a30fbc4 | 3898 | |
6d580b63 YQ |
3899 | if (selftest) |
3900 | { | |
605fd3c6 | 3901 | #if GDB_SELF_TEST |
ece5bc8a | 3902 | selftests::run_tests (selftest_filters); |
605fd3c6 | 3903 | #else |
8ecfd7bd | 3904 | printf (_("Selftests have been disabled for this build.\n")); |
605fd3c6 | 3905 | #endif |
6d580b63 YQ |
3906 | throw_quit ("Quit"); |
3907 | } | |
3908 | ||
2d717e4f | 3909 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3910 | { |
2d717e4f DJ |
3911 | int i, n; |
3912 | ||
3913 | n = argc - (next_arg - argv); | |
7ab2607f | 3914 | program_path.set (next_arg[0]); |
2090129c SDJ |
3915 | for (i = 1; i < n; i++) |
3916 | program_args.push_back (xstrdup (next_arg[i])); | |
2d717e4f | 3917 | |
45b7b345 | 3918 | /* Wait till we are at first instruction in program. */ |
15295543 | 3919 | target_create_inferior (program_path.get (), program_args); |
c906108c | 3920 | |
c588c53c MS |
3921 | /* We are now (hopefully) stopped at the first instruction of |
3922 | the target process. This assumes that the target process was | |
3923 | successfully created. */ | |
45b7b345 | 3924 | } |
2d717e4f DJ |
3925 | else if (pid != 0) |
3926 | { | |
5b1c542e | 3927 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3928 | error ("Attaching not supported on this target"); |
3929 | ||
3930 | /* Otherwise succeeded. */ | |
3931 | } | |
45b7b345 DJ |
3932 | else |
3933 | { | |
183be222 | 3934 | cs.last_status.set_exited (0); |
c12a5089 | 3935 | cs.last_ptid = minus_one_ptid; |
45b7b345 | 3936 | } |
37991b4f TT |
3937 | |
3938 | SCOPE_EXIT { detach_or_kill_for_exit_cleanup (); }; | |
c906108c | 3939 | |
311de423 PA |
3940 | /* Don't report shared library events on the initial connection, |
3941 | even if some libraries are preloaded. Avoids the "stopped by | |
3942 | shared library event" notice on gdb side. */ | |
d171632f TBA |
3943 | if (current_thread != nullptr) |
3944 | current_process ()->dlls_changed = false; | |
311de423 | 3945 | |
183be222 SM |
3946 | if (cs.last_status.kind () == TARGET_WAITKIND_EXITED |
3947 | || cs.last_status.kind () == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3948 | was_running = 0; |
3949 | else | |
3950 | was_running = 1; | |
3951 | ||
3952 | if (!was_running && !multi_mode) | |
860789c7 | 3953 | error ("No program to debug"); |
c588c53c | 3954 | |
c906108c SS |
3955 | while (1) |
3956 | { | |
c12a5089 SC |
3957 | cs.noack_mode = 0; |
3958 | cs.multi_process = 0; | |
3959 | cs.report_fork_events = 0; | |
3960 | cs.report_vfork_events = 0; | |
3961 | cs.report_exec_events = 0; | |
8336d594 | 3962 | /* Be sure we're out of tfind mode. */ |
c12a5089 SC |
3963 | cs.current_traceframe = -1; |
3964 | cs.cont_thread = null_ptid; | |
3965 | cs.swbreak_feature = 0; | |
3966 | cs.hwbreak_feature = 0; | |
3967 | cs.vCont_supported = 0; | |
546b77fe | 3968 | cs.memory_tagging_feature = false; |
bd99dc85 | 3969 | |
2d717e4f | 3970 | remote_open (port); |
c906108c | 3971 | |
a70b8144 | 3972 | try |
2d717e4f | 3973 | { |
860789c7 GB |
3974 | /* Wait for events. This will return when all event sources |
3975 | are removed from the event loop. */ | |
3976 | start_event_loop (); | |
2d717e4f | 3977 | |
860789c7 | 3978 | /* If an exit was requested (using the "monitor exit" |
fddedbe6 PA |
3979 | command), terminate now. */ |
3980 | if (exit_requested) | |
3981 | throw_quit ("Quit"); | |
3982 | ||
3983 | /* The only other way to get here is for getpkt to fail: | |
3984 | ||
3985 | - If --once was specified, we're done. | |
bd99dc85 | 3986 | |
fddedbe6 | 3987 | - If not in extended-remote mode, and we're no longer |
dda83cd7 SM |
3988 | debugging anything, simply exit: GDB has disconnected |
3989 | after processing the last process exit. | |
fddedbe6 PA |
3990 | |
3991 | - Otherwise, close the connection and reopen it at the | |
dda83cd7 | 3992 | top of the loop. */ |
fddedbe6 | 3993 | if (run_once || (!extended_protocol && !target_running ())) |
860789c7 | 3994 | throw_quit ("Quit"); |
bd99dc85 | 3995 | |
860789c7 GB |
3996 | fprintf (stderr, |
3997 | "Remote side has terminated connection. " | |
3998 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3999 | |
860789c7 GB |
4000 | /* Get rid of any pending statuses. An eventual reconnection |
4001 | (by the same GDB instance or another) will refresh all its | |
4002 | state from scratch. */ | |
465a859e | 4003 | discard_queued_stop_replies (minus_one_ptid); |
f0045347 SM |
4004 | for_each_thread ([] (thread_info *thread) |
4005 | { | |
4006 | thread->status_pending_p = 0; | |
4007 | }); | |
9939e131 | 4008 | |
860789c7 | 4009 | if (tracing) |
8336d594 | 4010 | { |
860789c7 | 4011 | if (disconnected_tracing) |
8336d594 | 4012 | { |
860789c7 GB |
4013 | /* Try to enable non-stop/async mode, so we we can |
4014 | both wait for an async socket accept, and handle | |
4015 | async target events simultaneously. There's also | |
4016 | no point either in having the target always stop | |
4017 | all threads, when we're going to pass signals | |
4018 | down without informing GDB. */ | |
4019 | if (!non_stop) | |
4020 | { | |
52405d85 | 4021 | if (the_target->start_non_stop (true)) |
860789c7 GB |
4022 | non_stop = 1; |
4023 | ||
4024 | /* Detaching implicitly resumes all threads; | |
4025 | simply disconnecting does not. */ | |
4026 | } | |
4027 | } | |
4028 | else | |
4029 | { | |
4030 | fprintf (stderr, | |
4031 | "Disconnected tracing disabled; " | |
4032 | "stopping trace run.\n"); | |
4033 | stop_tracing (); | |
8336d594 PA |
4034 | } |
4035 | } | |
860789c7 | 4036 | } |
230d2906 | 4037 | catch (const gdb_exception_error &exception) |
860789c7 | 4038 | { |
608a1e46 | 4039 | fflush (stdout); |
3d6e9d23 | 4040 | fprintf (stderr, "gdbserver: %s\n", exception.what ()); |
608a1e46 | 4041 | |
860789c7 | 4042 | if (response_needed) |
8336d594 | 4043 | { |
c12a5089 SC |
4044 | write_enn (cs.own_buf); |
4045 | putpkt (cs.own_buf); | |
8336d594 | 4046 | } |
608a1e46 PA |
4047 | |
4048 | if (run_once) | |
4049 | throw_quit ("Quit"); | |
8336d594 | 4050 | } |
bd99dc85 PA |
4051 | } |
4052 | } | |
01f9e8fa | 4053 | |
860789c7 GB |
4054 | /* Main function. */ |
4055 | ||
4056 | int | |
4057 | main (int argc, char *argv[]) | |
4058 | { | |
860789c7 | 4059 | |
a70b8144 | 4060 | try |
860789c7 GB |
4061 | { |
4062 | captured_main (argc, argv); | |
4063 | } | |
230d2906 | 4064 | catch (const gdb_exception &exception) |
860789c7 | 4065 | { |
492d29ea PA |
4066 | if (exception.reason == RETURN_ERROR) |
4067 | { | |
4068 | fflush (stdout); | |
3d6e9d23 | 4069 | fprintf (stderr, "%s\n", exception.what ()); |
492d29ea PA |
4070 | fprintf (stderr, "Exiting\n"); |
4071 | exit_code = 1; | |
4072 | } | |
4073 | ||
4074 | exit (exit_code); | |
860789c7 GB |
4075 | } |
4076 | ||
492d29ea | 4077 | gdb_assert_not_reached ("captured_main should never return"); |
860789c7 GB |
4078 | } |
4079 | ||
802e8e6d PA |
4080 | /* Process options coming from Z packets for a breakpoint. PACKET is |
4081 | the packet buffer. *PACKET is updated to point to the first char | |
4082 | after the last processed option. */ | |
9f3a5c85 LM |
4083 | |
4084 | static void | |
256642e8 | 4085 | process_point_options (struct gdb_breakpoint *bp, const char **packet) |
9f3a5c85 | 4086 | { |
256642e8 | 4087 | const char *dataptr = *packet; |
d3ce09f5 | 4088 | int persist; |
9f3a5c85 LM |
4089 | |
4090 | /* Check if data has the correct format. */ | |
4091 | if (*dataptr != ';') | |
4092 | return; | |
4093 | ||
4094 | dataptr++; | |
4095 | ||
4096 | while (*dataptr) | |
4097 | { | |
d3ce09f5 SS |
4098 | if (*dataptr == ';') |
4099 | ++dataptr; | |
4100 | ||
4101 | if (*dataptr == 'X') | |
9f3a5c85 | 4102 | { |
d3ce09f5 | 4103 | /* Conditional expression. */ |
c058728c | 4104 | threads_debug_printf ("Found breakpoint condition."); |
802e8e6d | 4105 | if (!add_breakpoint_condition (bp, &dataptr)) |
8424cc97 | 4106 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 | 4107 | } |
61012eef | 4108 | else if (startswith (dataptr, "cmds:")) |
d3ce09f5 SS |
4109 | { |
4110 | dataptr += strlen ("cmds:"); | |
c058728c | 4111 | threads_debug_printf ("Found breakpoint commands %s.", dataptr); |
d3ce09f5 SS |
4112 | persist = (*dataptr == '1'); |
4113 | dataptr += 2; | |
802e8e6d | 4114 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
8424cc97 | 4115 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 SS |
4116 | } |
4117 | else | |
4118 | { | |
d3ce09f5 SS |
4119 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
4120 | *dataptr); | |
78a99e91 | 4121 | /* Skip tokens until we find one that we recognize. */ |
8424cc97 | 4122 | dataptr = strchrnul (dataptr, ';'); |
9f3a5c85 | 4123 | } |
9f3a5c85 LM |
4124 | } |
4125 | *packet = dataptr; | |
4126 | } | |
4127 | ||
bd99dc85 PA |
4128 | /* Event loop callback that handles a serial event. The first byte in |
4129 | the serial buffer gets us here. We expect characters to arrive at | |
4130 | a brisk pace, so we read the rest of the packet with a blocking | |
4131 | getpkt call. */ | |
01f9e8fa | 4132 | |
8336d594 | 4133 | static int |
bd99dc85 PA |
4134 | process_serial_event (void) |
4135 | { | |
c12a5089 | 4136 | client_state &cs = get_client_state (); |
bd99dc85 PA |
4137 | int signal; |
4138 | unsigned int len; | |
4139 | CORE_ADDR mem_addr; | |
4140 | unsigned char sig; | |
4141 | int packet_len; | |
4142 | int new_packet_len = -1; | |
4143 | ||
bd99dc85 PA |
4144 | disable_async_io (); |
4145 | ||
3e6ec53a | 4146 | response_needed = false; |
c12a5089 | 4147 | packet_len = getpkt (cs.own_buf); |
bd99dc85 PA |
4148 | if (packet_len <= 0) |
4149 | { | |
bd99dc85 | 4150 | remote_close (); |
8336d594 PA |
4151 | /* Force an event loop break. */ |
4152 | return -1; | |
bd99dc85 | 4153 | } |
3e6ec53a | 4154 | response_needed = true; |
bd99dc85 | 4155 | |
c12a5089 | 4156 | char ch = cs.own_buf[0]; |
bd99dc85 PA |
4157 | switch (ch) |
4158 | { | |
4159 | case 'q': | |
c12a5089 | 4160 | handle_query (cs.own_buf, packet_len, &new_packet_len); |
bd99dc85 PA |
4161 | break; |
4162 | case 'Q': | |
c12a5089 | 4163 | handle_general_set (cs.own_buf); |
bd99dc85 PA |
4164 | break; |
4165 | case 'D': | |
c12a5089 | 4166 | handle_detach (cs.own_buf); |
bd99dc85 PA |
4167 | break; |
4168 | case '!': | |
3e6ec53a | 4169 | extended_protocol = true; |
c12a5089 | 4170 | write_ok (cs.own_buf); |
bd99dc85 PA |
4171 | break; |
4172 | case '?': | |
c12a5089 | 4173 | handle_status (cs.own_buf); |
bd99dc85 PA |
4174 | break; |
4175 | case 'H': | |
c12a5089 | 4176 | if (cs.own_buf[1] == 'c' || cs.own_buf[1] == 'g' || cs.own_buf[1] == 's') |
bd99dc85 | 4177 | { |
c12a5089 | 4178 | require_running_or_break (cs.own_buf); |
95954743 | 4179 | |
c12a5089 | 4180 | ptid_t thread_id = read_ptid (&cs.own_buf[2], NULL); |
95954743 | 4181 | |
96cde54f | 4182 | if (thread_id == null_ptid || thread_id == minus_one_ptid) |
95954743 | 4183 | thread_id = null_ptid; |
96cde54f | 4184 | else if (thread_id.is_pid ()) |
95954743 | 4185 | { |
96cde54f SM |
4186 | /* The ptid represents a pid. */ |
4187 | thread_info *thread = find_any_thread_of_pid (thread_id.pid ()); | |
785922a5 SM |
4188 | |
4189 | if (thread == NULL) | |
95954743 | 4190 | { |
c12a5089 | 4191 | write_enn (cs.own_buf); |
95954743 PA |
4192 | break; |
4193 | } | |
4194 | ||
9c80ecd6 | 4195 | thread_id = thread->id; |
95954743 | 4196 | } |
bd99dc85 PA |
4197 | else |
4198 | { | |
96cde54f SM |
4199 | /* The ptid represents a lwp/tid. */ |
4200 | if (find_thread_ptid (thread_id) == NULL) | |
c906108c | 4201 | { |
c12a5089 | 4202 | write_enn (cs.own_buf); |
c906108c SS |
4203 | break; |
4204 | } | |
c906108c SS |
4205 | } |
4206 | ||
c12a5089 | 4207 | if (cs.own_buf[1] == 'g') |
c906108c | 4208 | { |
d7e15655 | 4209 | if (thread_id == null_ptid) |
c906108c | 4210 | { |
bd99dc85 PA |
4211 | /* GDB is telling us to choose any thread. Check if |
4212 | the currently selected thread is still valid. If | |
4213 | it is not, select the first available. */ | |
c12a5089 | 4214 | thread_info *thread = find_thread_ptid (cs.general_thread); |
bd99dc85 | 4215 | if (thread == NULL) |
f0db101d | 4216 | thread = get_first_thread (); |
9c80ecd6 | 4217 | thread_id = thread->id; |
c906108c | 4218 | } |
bd99dc85 | 4219 | |
c12a5089 | 4220 | cs.general_thread = thread_id; |
f557a88a | 4221 | set_desired_thread (); |
f0db101d | 4222 | gdb_assert (current_thread != NULL); |
c906108c | 4223 | } |
c12a5089 SC |
4224 | else if (cs.own_buf[1] == 'c') |
4225 | cs.cont_thread = thread_id; | |
c906108c | 4226 | |
c12a5089 | 4227 | write_ok (cs.own_buf); |
bd99dc85 PA |
4228 | } |
4229 | else | |
4230 | { | |
4231 | /* Silently ignore it so that gdb can extend the protocol | |
4232 | without compatibility headaches. */ | |
c12a5089 | 4233 | cs.own_buf[0] = '\0'; |
2d717e4f | 4234 | } |
bd99dc85 PA |
4235 | break; |
4236 | case 'g': | |
c12a5089 SC |
4237 | require_running_or_break (cs.own_buf); |
4238 | if (cs.current_traceframe >= 0) | |
219f2f23 | 4239 | { |
3aee8918 PA |
4240 | struct regcache *regcache |
4241 | = new_register_cache (current_target_desc ()); | |
219f2f23 | 4242 | |
c12a5089 | 4243 | if (fetch_traceframe_registers (cs.current_traceframe, |
219f2f23 | 4244 | regcache, -1) == 0) |
c12a5089 | 4245 | registers_to_string (regcache, cs.own_buf); |
219f2f23 | 4246 | else |
c12a5089 | 4247 | write_enn (cs.own_buf); |
219f2f23 PA |
4248 | free_register_cache (regcache); |
4249 | } | |
4250 | else | |
4251 | { | |
4252 | struct regcache *regcache; | |
4253 | ||
f557a88a | 4254 | if (!set_desired_thread ()) |
c12a5089 | 4255 | write_enn (cs.own_buf); |
f0db101d PA |
4256 | else |
4257 | { | |
4258 | regcache = get_thread_regcache (current_thread, 1); | |
c12a5089 | 4259 | registers_to_string (regcache, cs.own_buf); |
f0db101d | 4260 | } |
219f2f23 | 4261 | } |
bd99dc85 PA |
4262 | break; |
4263 | case 'G': | |
c12a5089 SC |
4264 | require_running_or_break (cs.own_buf); |
4265 | if (cs.current_traceframe >= 0) | |
4266 | write_enn (cs.own_buf); | |
219f2f23 PA |
4267 | else |
4268 | { | |
442ea881 PA |
4269 | struct regcache *regcache; |
4270 | ||
f557a88a | 4271 | if (!set_desired_thread ()) |
c12a5089 | 4272 | write_enn (cs.own_buf); |
f0db101d PA |
4273 | else |
4274 | { | |
4275 | regcache = get_thread_regcache (current_thread, 1); | |
c12a5089 SC |
4276 | registers_from_string (regcache, &cs.own_buf[1]); |
4277 | write_ok (cs.own_buf); | |
f0db101d | 4278 | } |
442ea881 | 4279 | } |
bd99dc85 PA |
4280 | break; |
4281 | case 'm': | |
da4ae14a TT |
4282 | { |
4283 | require_running_or_break (cs.own_buf); | |
4284 | decode_m_packet (&cs.own_buf[1], &mem_addr, &len); | |
4285 | int res = gdb_read_memory (mem_addr, mem_buf, len); | |
4286 | if (res < 0) | |
4287 | write_enn (cs.own_buf); | |
4288 | else | |
4289 | bin2hex (mem_buf, cs.own_buf, res); | |
4290 | } | |
bd99dc85 PA |
4291 | break; |
4292 | case 'M': | |
c12a5089 SC |
4293 | require_running_or_break (cs.own_buf); |
4294 | decode_M_packet (&cs.own_buf[1], &mem_addr, &len, &mem_buf); | |
90d74c30 | 4295 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
c12a5089 | 4296 | write_ok (cs.own_buf); |
bd99dc85 | 4297 | else |
c12a5089 | 4298 | write_enn (cs.own_buf); |
bd99dc85 PA |
4299 | break; |
4300 | case 'X': | |
c12a5089 SC |
4301 | require_running_or_break (cs.own_buf); |
4302 | if (decode_X_packet (&cs.own_buf[1], packet_len - 1, | |
fa593d66 | 4303 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 4304 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
c12a5089 | 4305 | write_enn (cs.own_buf); |
bd99dc85 | 4306 | else |
c12a5089 | 4307 | write_ok (cs.own_buf); |
bd99dc85 PA |
4308 | break; |
4309 | case 'C': | |
c12a5089 SC |
4310 | require_running_or_break (cs.own_buf); |
4311 | hex2bin (cs.own_buf + 1, &sig, 1); | |
e053fbc4 PA |
4312 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4313 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4314 | else |
4315 | signal = 0; | |
c12a5089 | 4316 | myresume (cs.own_buf, 0, signal); |
bd99dc85 PA |
4317 | break; |
4318 | case 'S': | |
c12a5089 SC |
4319 | require_running_or_break (cs.own_buf); |
4320 | hex2bin (cs.own_buf + 1, &sig, 1); | |
e053fbc4 PA |
4321 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4322 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4323 | else |
4324 | signal = 0; | |
c12a5089 | 4325 | myresume (cs.own_buf, 1, signal); |
bd99dc85 PA |
4326 | break; |
4327 | case 'c': | |
c12a5089 | 4328 | require_running_or_break (cs.own_buf); |
bd99dc85 | 4329 | signal = 0; |
c12a5089 | 4330 | myresume (cs.own_buf, 0, signal); |
bd99dc85 PA |
4331 | break; |
4332 | case 's': | |
c12a5089 | 4333 | require_running_or_break (cs.own_buf); |
bd99dc85 | 4334 | signal = 0; |
c12a5089 | 4335 | myresume (cs.own_buf, 1, signal); |
bd99dc85 | 4336 | break; |
c6314022 AR |
4337 | case 'Z': /* insert_ ... */ |
4338 | /* Fallthrough. */ | |
4339 | case 'z': /* remove_ ... */ | |
bd99dc85 | 4340 | { |
bd99dc85 | 4341 | char *dataptr; |
aca22551 | 4342 | ULONGEST addr; |
27165294 | 4343 | int kind; |
c12a5089 | 4344 | char type = cs.own_buf[1]; |
c6314022 | 4345 | int res; |
d993e290 | 4346 | const int insert = ch == 'Z'; |
c12a5089 | 4347 | const char *p = &cs.own_buf[3]; |
aca22551 PA |
4348 | |
4349 | p = unpack_varlen_hex (p, &addr); | |
27165294 | 4350 | kind = strtol (p + 1, &dataptr, 16); |
c6314022 | 4351 | |
802e8e6d | 4352 | if (insert) |
d993e290 | 4353 | { |
9aa76cd0 | 4354 | struct gdb_breakpoint *bp; |
802e8e6d | 4355 | |
27165294 | 4356 | bp = set_gdb_breakpoint (type, addr, kind, &res); |
802e8e6d | 4357 | if (bp != NULL) |
9f3a5c85 | 4358 | { |
802e8e6d PA |
4359 | res = 0; |
4360 | ||
4361 | /* GDB may have sent us a list of *point parameters to | |
4362 | be evaluated on the target's side. Read such list | |
4363 | here. If we already have a list of parameters, GDB | |
4364 | is telling us to drop that list and use this one | |
4365 | instead. */ | |
0a261ed8 | 4366 | clear_breakpoint_conditions_and_commands (bp); |
256642e8 PA |
4367 | const char *options = dataptr; |
4368 | process_point_options (bp, &options); | |
9f3a5c85 | 4369 | } |
d993e290 | 4370 | } |
802e8e6d | 4371 | else |
27165294 | 4372 | res = delete_gdb_breakpoint (type, addr, kind); |
bd99dc85 | 4373 | |
c6314022 | 4374 | if (res == 0) |
c12a5089 | 4375 | write_ok (cs.own_buf); |
c6314022 AR |
4376 | else if (res == 1) |
4377 | /* Unsupported. */ | |
c12a5089 | 4378 | cs.own_buf[0] = '\0'; |
bd99dc85 | 4379 | else |
c12a5089 | 4380 | write_enn (cs.own_buf); |
bd99dc85 PA |
4381 | break; |
4382 | } | |
4383 | case 'k': | |
3e6ec53a | 4384 | response_needed = false; |
bd99dc85 | 4385 | if (!target_running ()) |
95954743 PA |
4386 | /* The packet we received doesn't make sense - but we can't |
4387 | reply to it, either. */ | |
8336d594 | 4388 | return 0; |
c906108c | 4389 | |
95954743 | 4390 | fprintf (stderr, "Killing all inferiors\n"); |
9179355e SM |
4391 | |
4392 | for_each_process (kill_inferior_callback); | |
c906108c | 4393 | |
bd99dc85 PA |
4394 | /* When using the extended protocol, we wait with no program |
4395 | running. The traditional protocol will exit instead. */ | |
4396 | if (extended_protocol) | |
4397 | { | |
183be222 | 4398 | cs.last_status.set_exited (GDB_SIGNAL_KILL); |
8336d594 | 4399 | return 0; |
bd99dc85 PA |
4400 | } |
4401 | else | |
8336d594 PA |
4402 | exit (0); |
4403 | ||
bd99dc85 PA |
4404 | case 'T': |
4405 | { | |
c12a5089 | 4406 | require_running_or_break (cs.own_buf); |
95954743 | 4407 | |
c12a5089 | 4408 | ptid_t thread_id = read_ptid (&cs.own_buf[1], NULL); |
96cde54f | 4409 | if (find_thread_ptid (thread_id) == NULL) |
bd99dc85 | 4410 | { |
c12a5089 | 4411 | write_enn (cs.own_buf); |
bd99dc85 PA |
4412 | break; |
4413 | } | |
4414 | ||
4415 | if (mythread_alive (thread_id)) | |
c12a5089 | 4416 | write_ok (cs.own_buf); |
bd99dc85 | 4417 | else |
c12a5089 | 4418 | write_enn (cs.own_buf); |
bd99dc85 PA |
4419 | } |
4420 | break; | |
4421 | case 'R': | |
3e6ec53a | 4422 | response_needed = false; |
bd99dc85 PA |
4423 | |
4424 | /* Restarting the inferior is only supported in the extended | |
4425 | protocol. */ | |
4426 | if (extended_protocol) | |
4427 | { | |
4428 | if (target_running ()) | |
9179355e SM |
4429 | for_each_process (kill_inferior_callback); |
4430 | ||
bd99dc85 PA |
4431 | fprintf (stderr, "GDBserver restarting\n"); |
4432 | ||
4433 | /* Wait till we are at 1st instruction in prog. */ | |
25e3c82c | 4434 | if (program_path.get () != NULL) |
51aee833 | 4435 | { |
15295543 | 4436 | target_create_inferior (program_path.get (), program_args); |
2090129c | 4437 | |
183be222 | 4438 | if (cs.last_status.kind () == TARGET_WAITKIND_STOPPED) |
51aee833 YQ |
4439 | { |
4440 | /* Stopped at the first instruction of the target | |
4441 | process. */ | |
c12a5089 | 4442 | cs.general_thread = cs.last_ptid; |
51aee833 YQ |
4443 | } |
4444 | else | |
4445 | { | |
4446 | /* Something went wrong. */ | |
c12a5089 | 4447 | cs.general_thread = null_ptid; |
51aee833 YQ |
4448 | } |
4449 | } | |
bd99dc85 PA |
4450 | else |
4451 | { | |
183be222 | 4452 | cs.last_status.set_exited (GDB_SIGNAL_KILL); |
bd99dc85 | 4453 | } |
8336d594 | 4454 | return 0; |
c906108c SS |
4455 | } |
4456 | else | |
4457 | { | |
bd99dc85 PA |
4458 | /* It is a request we don't understand. Respond with an |
4459 | empty packet so that gdb knows that we don't support this | |
4460 | request. */ | |
c12a5089 | 4461 | cs.own_buf[0] = '\0'; |
bd99dc85 PA |
4462 | break; |
4463 | } | |
4464 | case 'v': | |
4465 | /* Extended (long) request. */ | |
c12a5089 | 4466 | handle_v_requests (cs.own_buf, packet_len, &new_packet_len); |
bd99dc85 PA |
4467 | break; |
4468 | ||
4469 | default: | |
4470 | /* It is a request we don't understand. Respond with an empty | |
4471 | packet so that gdb knows that we don't support this | |
4472 | request. */ | |
c12a5089 | 4473 | cs.own_buf[0] = '\0'; |
bd99dc85 PA |
4474 | break; |
4475 | } | |
4476 | ||
4477 | if (new_packet_len != -1) | |
c12a5089 | 4478 | putpkt_binary (cs.own_buf, new_packet_len); |
bd99dc85 | 4479 | else |
c12a5089 | 4480 | putpkt (cs.own_buf); |
bd99dc85 | 4481 | |
3e6ec53a | 4482 | response_needed = false; |
bd99dc85 | 4483 | |
8336d594 PA |
4484 | if (exit_requested) |
4485 | return -1; | |
4486 | ||
4487 | return 0; | |
c906108c | 4488 | } |
bd99dc85 PA |
4489 | |
4490 | /* Event-loop callback for serial events. */ | |
4491 | ||
55d7aec8 | 4492 | void |
bd99dc85 PA |
4493 | handle_serial_event (int err, gdb_client_data client_data) |
4494 | { | |
c058728c | 4495 | threads_debug_printf ("handling possible serial event"); |
bd99dc85 PA |
4496 | |
4497 | /* Really handle it. */ | |
8336d594 | 4498 | if (process_serial_event () < 0) |
55d7aec8 TT |
4499 | { |
4500 | keep_processing_events = false; | |
4501 | return; | |
4502 | } | |
bd99dc85 | 4503 | |
0bfdf32f | 4504 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4505 | Important in the non-stop mode asynchronous protocol. */ |
f557a88a | 4506 | set_desired_thread (); |
bd99dc85 PA |
4507 | } |
4508 | ||
f2faf941 PA |
4509 | /* Push a stop notification on the notification queue. */ |
4510 | ||
4511 | static void | |
c272a98c | 4512 | push_stop_notification (ptid_t ptid, const target_waitstatus &status) |
f2faf941 | 4513 | { |
b494cdff | 4514 | struct vstop_notif *vstop_notif = new struct vstop_notif; |
f2faf941 | 4515 | |
c272a98c | 4516 | vstop_notif->status = status; |
f2faf941 PA |
4517 | vstop_notif->ptid = ptid; |
4518 | /* Push Stop notification. */ | |
b494cdff | 4519 | notif_push (¬if_stop, vstop_notif); |
f2faf941 PA |
4520 | } |
4521 | ||
bd99dc85 PA |
4522 | /* Event-loop callback for target events. */ |
4523 | ||
55d7aec8 | 4524 | void |
bd99dc85 PA |
4525 | handle_target_event (int err, gdb_client_data client_data) |
4526 | { | |
c12a5089 | 4527 | client_state &cs = get_client_state (); |
c058728c | 4528 | threads_debug_printf ("handling possible target event"); |
bd99dc85 | 4529 | |
c12a5089 | 4530 | cs.last_ptid = mywait (minus_one_ptid, &cs.last_status, |
95954743 | 4531 | TARGET_WNOHANG, 1); |
bd99dc85 | 4532 | |
183be222 | 4533 | if (cs.last_status.kind () == TARGET_WAITKIND_NO_RESUMED) |
fa96cb38 | 4534 | { |
f2faf941 | 4535 | if (gdb_connected () && report_no_resumed) |
c272a98c | 4536 | push_stop_notification (null_ptid, cs.last_status); |
fa96cb38 | 4537 | } |
183be222 | 4538 | else if (cs.last_status.kind () != TARGET_WAITKIND_IGNORE) |
bd99dc85 | 4539 | { |
e99b03dc | 4540 | int pid = cs.last_ptid.pid (); |
8336d594 PA |
4541 | struct process_info *process = find_process_pid (pid); |
4542 | int forward_event = !gdb_connected () || process->gdb_detached; | |
4543 | ||
183be222 SM |
4544 | if (cs.last_status.kind () == TARGET_WAITKIND_EXITED |
4545 | || cs.last_status.kind () == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
4546 | { |
4547 | mark_breakpoints_out (process); | |
c12a5089 | 4548 | target_mourn_inferior (cs.last_ptid); |
f9e39928 | 4549 | } |
183be222 | 4550 | else if (cs.last_status.kind () == TARGET_WAITKIND_THREAD_EXITED) |
65706a29 | 4551 | ; |
ce1a5b52 | 4552 | else |
d20a8ad9 PA |
4553 | { |
4554 | /* We're reporting this thread as stopped. Update its | |
4555 | "want-stopped" state to what the client wants, until it | |
4556 | gets a new resume action. */ | |
0bfdf32f | 4557 | current_thread->last_resume_kind = resume_stop; |
c12a5089 | 4558 | current_thread->last_status = cs.last_status; |
d20a8ad9 | 4559 | } |
8336d594 PA |
4560 | |
4561 | if (forward_event) | |
4562 | { | |
4563 | if (!target_running ()) | |
4564 | { | |
4565 | /* The last process exited. We're done. */ | |
4566 | exit (0); | |
4567 | } | |
4568 | ||
183be222 SM |
4569 | if (cs.last_status.kind () == TARGET_WAITKIND_EXITED |
4570 | || cs.last_status.kind () == TARGET_WAITKIND_SIGNALLED | |
4571 | || cs.last_status.kind () == TARGET_WAITKIND_THREAD_EXITED) | |
65706a29 PA |
4572 | ; |
4573 | else | |
8336d594 PA |
4574 | { |
4575 | /* A thread stopped with a signal, but gdb isn't | |
4576 | connected to handle it. Pass it down to the | |
4577 | inferior, as if it wasn't being traced. */ | |
049a8570 | 4578 | enum gdb_signal signal; |
8336d594 | 4579 | |
c058728c SM |
4580 | threads_debug_printf ("GDB not connected; forwarding event %d for" |
4581 | " [%s]", | |
4582 | (int) cs.last_status.kind (), | |
4583 | target_pid_to_str (cs.last_ptid).c_str ()); | |
8336d594 | 4584 | |
183be222 SM |
4585 | if (cs.last_status.kind () == TARGET_WAITKIND_STOPPED) |
4586 | signal = cs.last_status.sig (); | |
65706a29 | 4587 | else |
049a8570 | 4588 | signal = GDB_SIGNAL_0; |
c12a5089 | 4589 | target_continue (cs.last_ptid, signal); |
8336d594 | 4590 | } |
8336d594 PA |
4591 | } |
4592 | else | |
c272a98c | 4593 | push_stop_notification (cs.last_ptid, cs.last_status); |
bd99dc85 PA |
4594 | } |
4595 | ||
0bfdf32f | 4596 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4597 | Important in the non-stop mode asynchronous protocol. */ |
f557a88a | 4598 | set_desired_thread (); |
bd99dc85 | 4599 | } |
6d580b63 | 4600 | |
e487f994 TT |
4601 | /* See gdbsupport/event-loop.h. */ |
4602 | ||
4603 | int | |
4604 | invoke_async_signal_handlers () | |
4605 | { | |
4606 | return 0; | |
4607 | } | |
4608 | ||
4609 | /* See gdbsupport/event-loop.h. */ | |
4610 | ||
4611 | int | |
4612 | check_async_event_handlers () | |
4613 | { | |
4614 | return 0; | |
4615 | } | |
4616 | ||
4617 | /* See gdbsupport/errors.h */ | |
4618 | ||
4619 | void | |
4620 | flush_streams () | |
4621 | { | |
4622 | fflush (stdout); | |
4623 | fflush (stderr); | |
4624 | } | |
4625 | ||
4626 | /* See gdbsupport/gdb_select.h. */ | |
4627 | ||
4628 | int | |
4629 | gdb_select (int n, fd_set *readfds, fd_set *writefds, | |
4630 | fd_set *exceptfds, struct timeval *timeout) | |
4631 | { | |
4632 | return select (n, readfds, writefds, exceptfds, timeout); | |
4633 | } | |
4634 | ||
6d580b63 YQ |
4635 | #if GDB_SELF_TEST |
4636 | namespace selftests | |
4637 | { | |
4638 | ||
4639 | void | |
4640 | reset () | |
4641 | {} | |
4642 | ||
4643 | } // namespace selftests | |
4644 | #endif /* GDB_SELF_TEST */ |