Commit | Line | Data |
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c906108c | 1 | /* Main code for remote server for GDB. |
b811d2c2 | 2 | Copyright (C) 1989-2020 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" | |
6d580b63 | 50 | |
f8a4e119 SM |
51 | #define require_running_or_return(BUF) \ |
52 | if (!target_running ()) \ | |
53 | { \ | |
54 | write_enn (BUF); \ | |
55 | return; \ | |
56 | } | |
57 | ||
58 | #define require_running_or_break(BUF) \ | |
59 | if (!target_running ()) \ | |
60 | { \ | |
61 | write_enn (BUF); \ | |
62 | break; \ | |
63 | } | |
64 | ||
b4987c95 SDJ |
65 | /* String containing the current directory (what getwd would return). */ |
66 | ||
67 | char *current_directory; | |
68 | ||
2090129c SDJ |
69 | /* The environment to pass to the inferior when creating it. */ |
70 | ||
9a6c7d9c | 71 | static gdb_environ our_environ; |
2090129c | 72 | |
3e6ec53a | 73 | bool server_waiting; |
0d62e5e8 | 74 | |
3e6ec53a CB |
75 | static bool extended_protocol; |
76 | static bool response_needed; | |
77 | static bool exit_requested; | |
2d717e4f | 78 | |
03f2bd59 | 79 | /* --once: Exit after the first connection has closed. */ |
3e6ec53a | 80 | bool run_once; |
03f2bd59 | 81 | |
30baf67b | 82 | /* Whether to report TARGET_WAITKIND_NO_RESUMED events. */ |
3e6ec53a | 83 | static bool report_no_resumed; |
f2faf941 | 84 | |
3e6ec53a | 85 | bool non_stop; |
03583c20 | 86 | |
25e3c82c SDJ |
87 | static struct { |
88 | /* Set the PROGRAM_PATH. Here we adjust the path of the provided | |
89 | binary if needed. */ | |
90 | void set (gdb::unique_xmalloc_ptr<char> &&path) | |
91 | { | |
92 | m_path = std::move (path); | |
93 | ||
94 | /* Make sure we're using the absolute path of the inferior when | |
95 | creating it. */ | |
96 | if (!contains_dir_separator (m_path.get ())) | |
97 | { | |
98 | int reg_file_errno; | |
99 | ||
100 | /* Check if the file is in our CWD. If it is, then we prefix | |
101 | its name with CURRENT_DIRECTORY. Otherwise, we leave the | |
102 | name as-is because we'll try searching for it in $PATH. */ | |
103 | if (is_regular_file (m_path.get (), ®_file_errno)) | |
104 | m_path = gdb_abspath (m_path.get ()); | |
105 | } | |
106 | } | |
107 | ||
108 | /* Return the PROGRAM_PATH. */ | |
109 | char *get () | |
110 | { return m_path.get (); } | |
111 | ||
112 | private: | |
113 | /* The program name, adjusted if needed. */ | |
114 | gdb::unique_xmalloc_ptr<char> m_path; | |
115 | } program_path; | |
2090129c SDJ |
116 | static std::vector<char *> program_args; |
117 | static std::string wrapper_argv; | |
2d717e4f | 118 | |
a9fa9f7d DJ |
119 | /* The PID of the originally created or attached inferior. Used to |
120 | send signals to the process when GDB sends us an asynchronous interrupt | |
121 | (user hitting Control-C in the client), and to wait for the child to exit | |
122 | when no longer debugging it. */ | |
123 | ||
a1928bad | 124 | unsigned long signal_pid; |
a9fa9f7d | 125 | |
ec56be1b PA |
126 | /* Set if you want to disable optional thread related packets support |
127 | in gdbserver, for the sake of testing GDB against stubs that don't | |
128 | support them. */ | |
3e6ec53a CB |
129 | bool disable_packet_vCont; |
130 | bool disable_packet_Tthread; | |
131 | bool disable_packet_qC; | |
132 | bool disable_packet_qfThreadInfo; | |
442131c1 | 133 | bool disable_packet_T; |
ec56be1b | 134 | |
bd99dc85 PA |
135 | static unsigned char *mem_buf; |
136 | ||
14a00470 YQ |
137 | /* A sub-class of 'struct notif_event' for stop, holding information |
138 | relative to a single stop reply. We keep a queue of these to | |
139 | push to GDB in non-stop mode. */ | |
140 | ||
b494cdff | 141 | struct vstop_notif : public notif_event |
bd99dc85 | 142 | { |
bd99dc85 | 143 | /* Thread or process that got the event. */ |
95954743 | 144 | ptid_t ptid; |
bd99dc85 PA |
145 | |
146 | /* Event info. */ | |
147 | struct target_waitstatus status; | |
148 | }; | |
149 | ||
f4abbc16 MM |
150 | /* The current btrace configuration. This is gdbserver's mirror of GDB's |
151 | btrace configuration. */ | |
152 | static struct btrace_config current_btrace_conf; | |
153 | ||
c12a5089 SC |
154 | /* The client remote protocol state. */ |
155 | ||
156 | static client_state g_client_state; | |
157 | ||
158 | client_state & | |
159 | get_client_state () | |
160 | { | |
161 | client_state &cs = g_client_state; | |
162 | return cs; | |
163 | } | |
164 | ||
165 | ||
bd99dc85 PA |
166 | /* Put a stop reply to the stop reply queue. */ |
167 | ||
168 | static void | |
95954743 | 169 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 170 | { |
b494cdff | 171 | struct vstop_notif *new_notif = new struct vstop_notif; |
bd99dc85 | 172 | |
bd99dc85 PA |
173 | new_notif->ptid = ptid; |
174 | new_notif->status = *status; | |
175 | ||
b494cdff | 176 | notif_event_enque (¬if_stop, new_notif); |
bd99dc85 PA |
177 | } |
178 | ||
b494cdff TT |
179 | static bool |
180 | remove_all_on_match_ptid (struct notif_event *event, ptid_t filter_ptid) | |
bd99dc85 | 181 | { |
465a859e | 182 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; |
d20a8ad9 | 183 | |
b494cdff | 184 | return vstop_event->ptid.matches (filter_ptid); |
bd99dc85 PA |
185 | } |
186 | ||
465a859e | 187 | /* See server.h. */ |
bd99dc85 | 188 | |
465a859e PA |
189 | void |
190 | discard_queued_stop_replies (ptid_t ptid) | |
bd99dc85 | 191 | { |
b494cdff TT |
192 | std::list<notif_event *>::iterator iter, next, end; |
193 | end = notif_stop.queue.end (); | |
194 | for (iter = notif_stop.queue.begin (); iter != end; iter = next) | |
195 | { | |
196 | next = iter; | |
197 | ++next; | |
198 | ||
199 | if (remove_all_on_match_ptid (*iter, ptid)) | |
200 | { | |
201 | delete *iter; | |
202 | notif_stop.queue.erase (iter); | |
203 | } | |
204 | } | |
bd99dc85 PA |
205 | } |
206 | ||
bd99dc85 | 207 | static void |
14a00470 | 208 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 209 | { |
14a00470 YQ |
210 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
211 | ||
212 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
213 | } |
214 | ||
b494cdff | 215 | /* Helper for in_queued_stop_replies. */ |
5a04c4cf | 216 | |
b494cdff TT |
217 | static bool |
218 | in_queued_stop_replies_ptid (struct notif_event *event, ptid_t filter_ptid) | |
5a04c4cf | 219 | { |
5a04c4cf PA |
220 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; |
221 | ||
26a57c92 | 222 | if (vstop_event->ptid.matches (filter_ptid)) |
b494cdff | 223 | return true; |
5a04c4cf PA |
224 | |
225 | /* Don't resume fork children that GDB does not know about yet. */ | |
226 | if ((vstop_event->status.kind == TARGET_WAITKIND_FORKED | |
227 | || vstop_event->status.kind == TARGET_WAITKIND_VFORKED) | |
26a57c92 | 228 | && vstop_event->status.value.related_pid.matches (filter_ptid)) |
b494cdff | 229 | return true; |
5a04c4cf | 230 | |
b494cdff | 231 | return false; |
5a04c4cf PA |
232 | } |
233 | ||
234 | /* See server.h. */ | |
235 | ||
236 | int | |
237 | in_queued_stop_replies (ptid_t ptid) | |
238 | { | |
b494cdff TT |
239 | for (notif_event *event : notif_stop.queue) |
240 | { | |
241 | if (in_queued_stop_replies_ptid (event, ptid)) | |
242 | return true; | |
243 | } | |
244 | ||
245 | return false; | |
5a04c4cf PA |
246 | } |
247 | ||
14a00470 YQ |
248 | struct notif_server notif_stop = |
249 | { | |
b494cdff | 250 | "vStopped", "Stop", {}, vstop_notif_reply, |
14a00470 YQ |
251 | }; |
252 | ||
2d717e4f DJ |
253 | static int |
254 | target_running (void) | |
255 | { | |
649ebbca | 256 | return get_first_thread () != NULL; |
2d717e4f DJ |
257 | } |
258 | ||
268a13a5 | 259 | /* See gdbsupport/common-inferior.h. */ |
ccd213ac | 260 | |
2090129c SDJ |
261 | const char * |
262 | get_exec_wrapper () | |
263 | { | |
264 | return !wrapper_argv.empty () ? wrapper_argv.c_str () : NULL; | |
265 | } | |
eb97750b | 266 | |
268a13a5 | 267 | /* See gdbsupport/common-inferior.h. */ |
eb97750b | 268 | |
d9fa87f4 | 269 | const char * |
2090129c SDJ |
270 | get_exec_file (int err) |
271 | { | |
25e3c82c | 272 | if (err && program_path.get () == NULL) |
2090129c | 273 | error (_("No executable file specified.")); |
ccd213ac | 274 | |
25e3c82c | 275 | return program_path.get (); |
2090129c | 276 | } |
5b1c542e | 277 | |
2090129c | 278 | /* See server.h. */ |
d20a8ad9 | 279 | |
9a6c7d9c | 280 | gdb_environ * |
2090129c SDJ |
281 | get_environ () |
282 | { | |
9a6c7d9c | 283 | return &our_environ; |
c906108c SS |
284 | } |
285 | ||
45b7b345 | 286 | static int |
5b1c542e | 287 | attach_inferior (int pid) |
45b7b345 | 288 | { |
c12a5089 | 289 | client_state &cs = get_client_state (); |
45b7b345 DJ |
290 | /* myattach should return -1 if attaching is unsupported, |
291 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 292 | |
df0da8a2 AH |
293 | if (find_process_pid (pid) != nullptr) |
294 | error ("Already attached to process %d\n", pid); | |
295 | ||
45b7b345 DJ |
296 | if (myattach (pid) != 0) |
297 | return -1; | |
298 | ||
6910d122 | 299 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 300 | fflush (stderr); |
6910d122 | 301 | |
a9fa9f7d DJ |
302 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
303 | attach function, so that it can be the main thread instead of | |
304 | whichever we were told to attach to. */ | |
305 | signal_pid = pid; | |
306 | ||
bd99dc85 PA |
307 | if (!non_stop) |
308 | { | |
f2907e49 | 309 | cs.last_ptid = mywait (ptid_t (pid), &cs.last_status, 0, 0); |
bd99dc85 PA |
310 | |
311 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
312 | process using the "attach" command, but this is different; it's | |
313 | just using "target remote". Pretend it's just starting up. */ | |
c12a5089 SC |
314 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED |
315 | && cs.last_status.value.sig == GDB_SIGNAL_STOP) | |
316 | cs.last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 | 317 | |
0bfdf32f | 318 | current_thread->last_resume_kind = resume_stop; |
c12a5089 | 319 | current_thread->last_status = cs.last_status; |
bd99dc85 | 320 | } |
9db87ebd | 321 | |
45b7b345 DJ |
322 | return 0; |
323 | } | |
324 | ||
0876f84a DJ |
325 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
326 | or -1 otherwise. */ | |
327 | ||
328 | static int | |
d08aafef | 329 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 330 | { |
d08aafef PA |
331 | /* After the read marker and annex, qXfer looks like a |
332 | traditional 'm' packet. */ | |
333 | decode_m_packet (buf, ofs, len); | |
334 | ||
335 | return 0; | |
336 | } | |
337 | ||
338 | static int | |
339 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
340 | { | |
341 | /* Extract and NUL-terminate the object. */ | |
342 | *object = buf; | |
343 | while (*buf && *buf != ':') | |
344 | buf++; | |
345 | if (*buf == '\0') | |
346 | return -1; | |
347 | *buf++ = 0; | |
348 | ||
349 | /* Extract and NUL-terminate the read/write action. */ | |
350 | *rw = buf; | |
351 | while (*buf && *buf != ':') | |
352 | buf++; | |
353 | if (*buf == '\0') | |
354 | return -1; | |
355 | *buf++ = 0; | |
356 | ||
0876f84a DJ |
357 | /* Extract and NUL-terminate the annex. */ |
358 | *annex = buf; | |
359 | while (*buf && *buf != ':') | |
360 | buf++; | |
361 | if (*buf == '\0') | |
362 | return -1; | |
363 | *buf++ = 0; | |
364 | ||
d08aafef | 365 | *offset = buf; |
0876f84a DJ |
366 | return 0; |
367 | } | |
368 | ||
369 | /* Write the response to a successful qXfer read. Returns the | |
370 | length of the (binary) data stored in BUF, corresponding | |
371 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
372 | the first character of the response. */ | |
373 | static int | |
f98cd059 | 374 | write_qxfer_response (char *buf, const gdb_byte *data, int len, int is_more) |
0876f84a DJ |
375 | { |
376 | int out_len; | |
377 | ||
378 | if (is_more) | |
379 | buf[0] = 'm'; | |
380 | else | |
381 | buf[0] = 'l'; | |
382 | ||
124e13d9 SM |
383 | return remote_escape_output (data, len, 1, (unsigned char *) buf + 1, |
384 | &out_len, PBUFSIZ - 2) + 1; | |
0876f84a DJ |
385 | } |
386 | ||
f4abbc16 | 387 | /* Handle btrace enabling in BTS format. */ |
9accd112 | 388 | |
9ee23a85 | 389 | static void |
f4abbc16 | 390 | handle_btrace_enable_bts (struct thread_info *thread) |
9accd112 MM |
391 | { |
392 | if (thread->btrace != NULL) | |
9ee23a85 | 393 | error (_("Btrace already enabled.")); |
9accd112 | 394 | |
f4abbc16 | 395 | current_btrace_conf.format = BTRACE_FORMAT_BTS; |
9c80ecd6 | 396 | thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf); |
9accd112 MM |
397 | } |
398 | ||
bc504a31 | 399 | /* Handle btrace enabling in Intel Processor Trace format. */ |
b20a6524 | 400 | |
9ee23a85 | 401 | static void |
b20a6524 MM |
402 | handle_btrace_enable_pt (struct thread_info *thread) |
403 | { | |
404 | if (thread->btrace != NULL) | |
9ee23a85 | 405 | error (_("Btrace already enabled.")); |
b20a6524 MM |
406 | |
407 | current_btrace_conf.format = BTRACE_FORMAT_PT; | |
9c80ecd6 | 408 | thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf); |
b20a6524 MM |
409 | } |
410 | ||
9accd112 MM |
411 | /* Handle btrace disabling. */ |
412 | ||
9ee23a85 | 413 | static void |
9accd112 MM |
414 | handle_btrace_disable (struct thread_info *thread) |
415 | { | |
416 | ||
417 | if (thread->btrace == NULL) | |
9ee23a85 | 418 | error (_("Branch tracing not enabled.")); |
9accd112 MM |
419 | |
420 | if (target_disable_btrace (thread->btrace) != 0) | |
9ee23a85 | 421 | error (_("Could not disable branch tracing.")); |
9accd112 MM |
422 | |
423 | thread->btrace = NULL; | |
9accd112 MM |
424 | } |
425 | ||
426 | /* Handle the "Qbtrace" packet. */ | |
427 | ||
428 | static int | |
429 | handle_btrace_general_set (char *own_buf) | |
430 | { | |
c12a5089 | 431 | client_state &cs = get_client_state (); |
9accd112 | 432 | struct thread_info *thread; |
9accd112 MM |
433 | char *op; |
434 | ||
61012eef | 435 | if (!startswith (own_buf, "Qbtrace:")) |
9accd112 MM |
436 | return 0; |
437 | ||
438 | op = own_buf + strlen ("Qbtrace:"); | |
439 | ||
d7e15655 TT |
440 | if (cs.general_thread == null_ptid |
441 | || cs.general_thread == minus_one_ptid) | |
9accd112 MM |
442 | { |
443 | strcpy (own_buf, "E.Must select a single thread."); | |
444 | return -1; | |
445 | } | |
446 | ||
c12a5089 | 447 | thread = find_thread_ptid (cs.general_thread); |
9accd112 MM |
448 | if (thread == NULL) |
449 | { | |
450 | strcpy (own_buf, "E.No such thread."); | |
451 | return -1; | |
452 | } | |
453 | ||
a70b8144 | 454 | try |
9ee23a85 MM |
455 | { |
456 | if (strcmp (op, "bts") == 0) | |
457 | handle_btrace_enable_bts (thread); | |
458 | else if (strcmp (op, "pt") == 0) | |
459 | handle_btrace_enable_pt (thread); | |
460 | else if (strcmp (op, "off") == 0) | |
461 | handle_btrace_disable (thread); | |
462 | else | |
463 | error (_("Bad Qbtrace operation. Use bts, pt, or off.")); | |
464 | ||
465 | write_ok (own_buf); | |
466 | } | |
230d2906 | 467 | catch (const gdb_exception_error &exception) |
9ee23a85 | 468 | { |
3d6e9d23 | 469 | sprintf (own_buf, "E.%s", exception.what ()); |
9ee23a85 | 470 | } |
9accd112 MM |
471 | |
472 | return 1; | |
473 | } | |
474 | ||
d33501a5 MM |
475 | /* Handle the "Qbtrace-conf" packet. */ |
476 | ||
477 | static int | |
478 | handle_btrace_conf_general_set (char *own_buf) | |
479 | { | |
c12a5089 | 480 | client_state &cs = get_client_state (); |
d33501a5 MM |
481 | struct thread_info *thread; |
482 | char *op; | |
483 | ||
61012eef | 484 | if (!startswith (own_buf, "Qbtrace-conf:")) |
d33501a5 MM |
485 | return 0; |
486 | ||
487 | op = own_buf + strlen ("Qbtrace-conf:"); | |
488 | ||
d7e15655 TT |
489 | if (cs.general_thread == null_ptid |
490 | || cs.general_thread == minus_one_ptid) | |
d33501a5 MM |
491 | { |
492 | strcpy (own_buf, "E.Must select a single thread."); | |
493 | return -1; | |
494 | } | |
495 | ||
c12a5089 | 496 | thread = find_thread_ptid (cs.general_thread); |
d33501a5 MM |
497 | if (thread == NULL) |
498 | { | |
499 | strcpy (own_buf, "E.No such thread."); | |
500 | return -1; | |
501 | } | |
502 | ||
61012eef | 503 | if (startswith (op, "bts:size=")) |
d33501a5 MM |
504 | { |
505 | unsigned long size; | |
506 | char *endp = NULL; | |
507 | ||
508 | errno = 0; | |
509 | size = strtoul (op + strlen ("bts:size="), &endp, 16); | |
510 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
511 | { | |
512 | strcpy (own_buf, "E.Bad size value."); | |
513 | return -1; | |
514 | } | |
515 | ||
516 | current_btrace_conf.bts.size = (unsigned int) size; | |
517 | } | |
b20a6524 MM |
518 | else if (strncmp (op, "pt:size=", strlen ("pt:size=")) == 0) |
519 | { | |
520 | unsigned long size; | |
521 | char *endp = NULL; | |
522 | ||
523 | errno = 0; | |
524 | size = strtoul (op + strlen ("pt:size="), &endp, 16); | |
525 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
526 | { | |
527 | strcpy (own_buf, "E.Bad size value."); | |
528 | return -1; | |
529 | } | |
530 | ||
531 | current_btrace_conf.pt.size = (unsigned int) size; | |
532 | } | |
d33501a5 MM |
533 | else |
534 | { | |
535 | strcpy (own_buf, "E.Bad Qbtrace configuration option."); | |
536 | return -1; | |
537 | } | |
538 | ||
539 | write_ok (own_buf); | |
540 | return 1; | |
541 | } | |
542 | ||
89be2091 | 543 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
544 | |
545 | static void | |
89be2091 DJ |
546 | handle_general_set (char *own_buf) |
547 | { | |
c12a5089 | 548 | client_state &cs = get_client_state (); |
61012eef | 549 | if (startswith (own_buf, "QPassSignals:")) |
89be2091 | 550 | { |
a493e3e2 | 551 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
552 | const char *p = own_buf + strlen ("QPassSignals:"); |
553 | CORE_ADDR cursig; | |
554 | ||
555 | p = decode_address_to_semicolon (&cursig, p); | |
556 | for (i = 0; i < numsigs; i++) | |
557 | { | |
558 | if (i == cursig) | |
559 | { | |
c12a5089 | 560 | cs.pass_signals[i] = 1; |
89be2091 DJ |
561 | if (*p == '\0') |
562 | /* Keep looping, to clear the remaining signals. */ | |
563 | cursig = -1; | |
564 | else | |
565 | p = decode_address_to_semicolon (&cursig, p); | |
566 | } | |
567 | else | |
c12a5089 | 568 | cs.pass_signals[i] = 0; |
89be2091 DJ |
569 | } |
570 | strcpy (own_buf, "OK"); | |
571 | return; | |
572 | } | |
573 | ||
61012eef | 574 | if (startswith (own_buf, "QProgramSignals:")) |
9b224c5e | 575 | { |
a493e3e2 | 576 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
577 | const char *p = own_buf + strlen ("QProgramSignals:"); |
578 | CORE_ADDR cursig; | |
579 | ||
c12a5089 | 580 | cs.program_signals_p = 1; |
9b224c5e PA |
581 | |
582 | p = decode_address_to_semicolon (&cursig, p); | |
583 | for (i = 0; i < numsigs; i++) | |
584 | { | |
585 | if (i == cursig) | |
586 | { | |
c12a5089 | 587 | cs.program_signals[i] = 1; |
9b224c5e PA |
588 | if (*p == '\0') |
589 | /* Keep looping, to clear the remaining signals. */ | |
590 | cursig = -1; | |
591 | else | |
592 | p = decode_address_to_semicolon (&cursig, p); | |
593 | } | |
594 | else | |
c12a5089 | 595 | cs.program_signals[i] = 0; |
9b224c5e PA |
596 | } |
597 | strcpy (own_buf, "OK"); | |
598 | return; | |
599 | } | |
600 | ||
82075af2 JS |
601 | if (startswith (own_buf, "QCatchSyscalls:")) |
602 | { | |
603 | const char *p = own_buf + sizeof ("QCatchSyscalls:") - 1; | |
604 | int enabled = -1; | |
605 | CORE_ADDR sysno; | |
606 | struct process_info *process; | |
607 | ||
608 | if (!target_running () || !target_supports_catch_syscall ()) | |
609 | { | |
610 | write_enn (own_buf); | |
611 | return; | |
612 | } | |
613 | ||
614 | if (strcmp (p, "0") == 0) | |
615 | enabled = 0; | |
616 | else if (p[0] == '1' && (p[1] == ';' || p[1] == '\0')) | |
617 | enabled = 1; | |
618 | else | |
619 | { | |
620 | fprintf (stderr, "Unknown catch-syscalls mode requested: %s\n", | |
621 | own_buf); | |
622 | write_enn (own_buf); | |
623 | return; | |
624 | } | |
625 | ||
626 | process = current_process (); | |
f27866ba | 627 | process->syscalls_to_catch.clear (); |
82075af2 JS |
628 | |
629 | if (enabled) | |
630 | { | |
631 | p += 1; | |
632 | if (*p == ';') | |
633 | { | |
634 | p += 1; | |
635 | while (*p != '\0') | |
636 | { | |
637 | p = decode_address_to_semicolon (&sysno, p); | |
f27866ba | 638 | process->syscalls_to_catch.push_back (sysno); |
82075af2 JS |
639 | } |
640 | } | |
641 | else | |
f27866ba | 642 | process->syscalls_to_catch.push_back (ANY_SYSCALL); |
82075af2 JS |
643 | } |
644 | ||
645 | write_ok (own_buf); | |
646 | return; | |
647 | } | |
648 | ||
0a2dde4a SDJ |
649 | if (strcmp (own_buf, "QEnvironmentReset") == 0) |
650 | { | |
651 | our_environ = gdb_environ::from_host_environ (); | |
652 | ||
653 | write_ok (own_buf); | |
654 | return; | |
655 | } | |
656 | ||
657 | if (startswith (own_buf, "QEnvironmentHexEncoded:")) | |
658 | { | |
659 | const char *p = own_buf + sizeof ("QEnvironmentHexEncoded:") - 1; | |
660 | /* The final form of the environment variable. FINAL_VAR will | |
661 | hold the 'VAR=VALUE' format. */ | |
662 | std::string final_var = hex2str (p); | |
663 | std::string var_name, var_value; | |
664 | ||
665 | if (remote_debug) | |
666 | { | |
667 | debug_printf (_("[QEnvironmentHexEncoded received '%s']\n"), p); | |
668 | debug_printf (_("[Environment variable to be set: '%s']\n"), | |
669 | final_var.c_str ()); | |
670 | debug_flush (); | |
671 | } | |
672 | ||
673 | size_t pos = final_var.find ('='); | |
674 | if (pos == std::string::npos) | |
675 | { | |
676 | warning (_("Unexpected format for environment variable: '%s'"), | |
677 | final_var.c_str ()); | |
678 | write_enn (own_buf); | |
679 | return; | |
680 | } | |
681 | ||
682 | var_name = final_var.substr (0, pos); | |
683 | var_value = final_var.substr (pos + 1, std::string::npos); | |
684 | ||
685 | our_environ.set (var_name.c_str (), var_value.c_str ()); | |
686 | ||
687 | write_ok (own_buf); | |
688 | return; | |
689 | } | |
690 | ||
691 | if (startswith (own_buf, "QEnvironmentUnset:")) | |
692 | { | |
693 | const char *p = own_buf + sizeof ("QEnvironmentUnset:") - 1; | |
694 | std::string varname = hex2str (p); | |
695 | ||
696 | if (remote_debug) | |
697 | { | |
698 | debug_printf (_("[QEnvironmentUnset received '%s']\n"), p); | |
699 | debug_printf (_("[Environment variable to be unset: '%s']\n"), | |
700 | varname.c_str ()); | |
701 | debug_flush (); | |
702 | } | |
703 | ||
704 | our_environ.unset (varname.c_str ()); | |
705 | ||
706 | write_ok (own_buf); | |
707 | return; | |
708 | } | |
709 | ||
a6f3e723 SL |
710 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
711 | { | |
712 | if (remote_debug) | |
713 | { | |
4eefa7bc PA |
714 | debug_printf ("[noack mode enabled]\n"); |
715 | debug_flush (); | |
a6f3e723 SL |
716 | } |
717 | ||
c12a5089 | 718 | cs.noack_mode = 1; |
a6f3e723 SL |
719 | write_ok (own_buf); |
720 | return; | |
721 | } | |
722 | ||
61012eef | 723 | if (startswith (own_buf, "QNonStop:")) |
bd99dc85 PA |
724 | { |
725 | char *mode = own_buf + 9; | |
726 | int req = -1; | |
b2333d22 | 727 | const char *req_str; |
bd99dc85 PA |
728 | |
729 | if (strcmp (mode, "0") == 0) | |
730 | req = 0; | |
731 | else if (strcmp (mode, "1") == 0) | |
732 | req = 1; | |
733 | else | |
734 | { | |
735 | /* We don't know what this mode is, so complain to | |
736 | GDB. */ | |
737 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
738 | own_buf); | |
739 | write_enn (own_buf); | |
740 | return; | |
741 | } | |
742 | ||
743 | req_str = req ? "non-stop" : "all-stop"; | |
52405d85 | 744 | if (the_target->start_non_stop (req == 1) != 0) |
bd99dc85 PA |
745 | { |
746 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
747 | write_enn (own_buf); | |
748 | return; | |
749 | } | |
750 | ||
3e6ec53a | 751 | non_stop = (req != 0); |
bd99dc85 PA |
752 | |
753 | if (remote_debug) | |
4eefa7bc | 754 | debug_printf ("[%s mode enabled]\n", req_str); |
bd99dc85 PA |
755 | |
756 | write_ok (own_buf); | |
757 | return; | |
758 | } | |
759 | ||
61012eef | 760 | if (startswith (own_buf, "QDisableRandomization:")) |
03583c20 UW |
761 | { |
762 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
763 | ULONGEST setting; | |
764 | ||
765 | unpack_varlen_hex (packet, &setting); | |
c12a5089 | 766 | cs.disable_randomization = setting; |
03583c20 UW |
767 | |
768 | if (remote_debug) | |
769 | { | |
c12a5089 | 770 | debug_printf (cs.disable_randomization |
4eefa7bc PA |
771 | ? "[address space randomization disabled]\n" |
772 | : "[address space randomization enabled]\n"); | |
03583c20 UW |
773 | } |
774 | ||
775 | write_ok (own_buf); | |
776 | return; | |
777 | } | |
778 | ||
219f2f23 PA |
779 | if (target_supports_tracepoints () |
780 | && handle_tracepoint_general_set (own_buf)) | |
781 | return; | |
782 | ||
61012eef | 783 | if (startswith (own_buf, "QAgent:")) |
d1feda86 YQ |
784 | { |
785 | char *mode = own_buf + strlen ("QAgent:"); | |
786 | int req = 0; | |
787 | ||
788 | if (strcmp (mode, "0") == 0) | |
789 | req = 0; | |
790 | else if (strcmp (mode, "1") == 0) | |
791 | req = 1; | |
792 | else | |
793 | { | |
794 | /* We don't know what this value is, so complain to GDB. */ | |
795 | sprintf (own_buf, "E.Unknown QAgent value"); | |
796 | return; | |
797 | } | |
798 | ||
799 | /* Update the flag. */ | |
800 | use_agent = req; | |
801 | if (remote_debug) | |
4eefa7bc | 802 | debug_printf ("[%s agent]\n", req ? "Enable" : "Disable"); |
d1feda86 YQ |
803 | write_ok (own_buf); |
804 | return; | |
805 | } | |
806 | ||
9accd112 MM |
807 | if (handle_btrace_general_set (own_buf)) |
808 | return; | |
809 | ||
d33501a5 MM |
810 | if (handle_btrace_conf_general_set (own_buf)) |
811 | return; | |
812 | ||
65706a29 PA |
813 | if (startswith (own_buf, "QThreadEvents:")) |
814 | { | |
815 | char *mode = own_buf + strlen ("QThreadEvents:"); | |
816 | enum tribool req = TRIBOOL_UNKNOWN; | |
817 | ||
818 | if (strcmp (mode, "0") == 0) | |
819 | req = TRIBOOL_FALSE; | |
820 | else if (strcmp (mode, "1") == 0) | |
821 | req = TRIBOOL_TRUE; | |
822 | else | |
823 | { | |
65706a29 PA |
824 | /* We don't know what this mode is, so complain to GDB. */ |
825 | sprintf (own_buf, "E.Unknown thread-events mode requested: %s\n", | |
b9671caf | 826 | mode); |
65706a29 PA |
827 | return; |
828 | } | |
829 | ||
c12a5089 | 830 | cs.report_thread_events = (req == TRIBOOL_TRUE); |
65706a29 PA |
831 | |
832 | if (remote_debug) | |
833 | { | |
c12a5089 | 834 | const char *req_str = cs.report_thread_events ? "enabled" : "disabled"; |
65706a29 | 835 | |
4eefa7bc | 836 | debug_printf ("[thread events are now %s]\n", req_str); |
65706a29 PA |
837 | } |
838 | ||
839 | write_ok (own_buf); | |
840 | return; | |
841 | } | |
842 | ||
aefd8b33 SDJ |
843 | if (startswith (own_buf, "QStartupWithShell:")) |
844 | { | |
845 | const char *value = own_buf + strlen ("QStartupWithShell:"); | |
846 | ||
847 | if (strcmp (value, "1") == 0) | |
848 | startup_with_shell = true; | |
849 | else if (strcmp (value, "0") == 0) | |
850 | startup_with_shell = false; | |
851 | else | |
852 | { | |
853 | /* Unknown value. */ | |
854 | fprintf (stderr, "Unknown value to startup-with-shell: %s\n", | |
855 | own_buf); | |
856 | write_enn (own_buf); | |
857 | return; | |
858 | } | |
859 | ||
860 | if (remote_debug) | |
861 | debug_printf (_("[Inferior will %s started with shell]"), | |
862 | startup_with_shell ? "be" : "not be"); | |
863 | ||
864 | write_ok (own_buf); | |
865 | return; | |
866 | } | |
867 | ||
bc3b087d SDJ |
868 | if (startswith (own_buf, "QSetWorkingDir:")) |
869 | { | |
870 | const char *p = own_buf + strlen ("QSetWorkingDir:"); | |
871 | ||
872 | if (*p != '\0') | |
873 | { | |
874 | std::string path = hex2str (p); | |
875 | ||
876 | set_inferior_cwd (path.c_str ()); | |
877 | ||
878 | if (remote_debug) | |
879 | debug_printf (_("[Set the inferior's current directory to %s]\n"), | |
880 | path.c_str ()); | |
881 | } | |
882 | else | |
883 | { | |
884 | /* An empty argument means that we should clear out any | |
885 | previously set cwd for the inferior. */ | |
886 | set_inferior_cwd (NULL); | |
887 | ||
888 | if (remote_debug) | |
889 | debug_printf (_("\ | |
890 | [Unset the inferior's current directory; will use gdbserver's cwd]\n")); | |
891 | } | |
892 | write_ok (own_buf); | |
893 | ||
894 | return; | |
895 | } | |
896 | ||
89be2091 DJ |
897 | /* Otherwise we didn't know what packet it was. Say we didn't |
898 | understand it. */ | |
899 | own_buf[0] = 0; | |
900 | } | |
901 | ||
23181151 | 902 | static const char * |
fb1e4ffc | 903 | get_features_xml (const char *annex) |
23181151 | 904 | { |
3aee8918 PA |
905 | const struct target_desc *desc = current_target_desc (); |
906 | ||
907 | /* `desc->xmltarget' defines what to return when looking for the | |
908 | "target.xml" file. Its contents can either be verbatim XML code | |
909 | (prefixed with a '@') or else the name of the actual XML file to | |
910 | be used in place of "target.xml". | |
fb1e4ffc | 911 | |
9b4b61c8 UW |
912 | This variable is set up from the auto-generated |
913 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 914 | |
0abe8a89 | 915 | if (strcmp (annex, "target.xml") == 0) |
23181151 | 916 | { |
e98577a9 | 917 | const char *ret = tdesc_get_features_xml (desc); |
0abe8a89 YQ |
918 | |
919 | if (*ret == '@') | |
920 | return ret + 1; | |
23181151 | 921 | else |
0abe8a89 | 922 | annex = ret; |
23181151 DJ |
923 | } |
924 | ||
9b4b61c8 UW |
925 | #ifdef USE_XML |
926 | { | |
9b4b61c8 UW |
927 | int i; |
928 | ||
929 | /* Look for the annex. */ | |
930 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
931 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
932 | break; | |
933 | ||
934 | if (xml_builtin[i][0] != NULL) | |
935 | return xml_builtin[i][1]; | |
936 | } | |
937 | #endif | |
938 | ||
939 | return NULL; | |
23181151 DJ |
940 | } |
941 | ||
5b3da067 | 942 | static void |
c74d0ad8 DJ |
943 | monitor_show_help (void) |
944 | { | |
945 | monitor_output ("The following monitor commands are supported:\n"); | |
946 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 947 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
948 | monitor_output (" set debug-hw-points <0|1>\n"); |
949 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
950 | monitor_output (" set remote-debug <0|1>\n"); |
951 | monitor_output (" Enable remote protocol debugging messages\n"); | |
87ce2a04 DE |
952 | monitor_output (" set debug-format option1[,option2,...]\n"); |
953 | monitor_output (" Add additional information to debugging messages\n"); | |
954 | monitor_output (" Options: all, none"); | |
87ce2a04 | 955 | monitor_output (", timestamp"); |
87ce2a04 | 956 | monitor_output ("\n"); |
ecd7ecbc DJ |
957 | monitor_output (" exit\n"); |
958 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
959 | } |
960 | ||
764880b7 PA |
961 | /* Read trace frame or inferior memory. Returns the number of bytes |
962 | actually read, zero when no further transfer is possible, and -1 on | |
963 | error. Return of a positive value smaller than LEN does not | |
964 | indicate there's no more to be read, only the end of the transfer. | |
965 | E.g., when GDB reads memory from a traceframe, a first request may | |
966 | be served from a memory block that does not cover the whole request | |
967 | length. A following request gets the rest served from either | |
968 | another block (of the same traceframe) or from the read-only | |
969 | regions. */ | |
219f2f23 PA |
970 | |
971 | static int | |
90d74c30 | 972 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 973 | { |
c12a5089 | 974 | client_state &cs = get_client_state (); |
764880b7 | 975 | int res; |
90d74c30 | 976 | |
c12a5089 | 977 | if (cs.current_traceframe >= 0) |
219f2f23 PA |
978 | { |
979 | ULONGEST nbytes; | |
980 | ULONGEST length = len; | |
981 | ||
c12a5089 | 982 | if (traceframe_read_mem (cs.current_traceframe, |
219f2f23 | 983 | memaddr, myaddr, len, &nbytes)) |
9a13b2fa | 984 | return -1; |
219f2f23 | 985 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
986 | if (nbytes > 0) |
987 | return nbytes; | |
219f2f23 | 988 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 989 | return -1; |
219f2f23 PA |
990 | /* Otherwise we have a valid readonly case, fall through. */ |
991 | /* (assume no half-trace half-real blocks for now) */ | |
992 | } | |
993 | ||
764880b7 PA |
994 | res = prepare_to_access_memory (); |
995 | if (res == 0) | |
90d74c30 | 996 | { |
f557a88a | 997 | if (set_desired_thread ()) |
f0db101d PA |
998 | res = read_inferior_memory (memaddr, myaddr, len); |
999 | else | |
1000 | res = 1; | |
0146f85b | 1001 | done_accessing_memory (); |
90d74c30 | 1002 | |
764880b7 PA |
1003 | return res == 0 ? len : -1; |
1004 | } | |
1005 | else | |
1006 | return -1; | |
219f2f23 PA |
1007 | } |
1008 | ||
1009 | /* Write trace frame or inferior memory. Actually, writing to trace | |
1010 | frames is forbidden. */ | |
1011 | ||
1012 | static int | |
90d74c30 | 1013 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 | 1014 | { |
c12a5089 SC |
1015 | client_state &cs = get_client_state (); |
1016 | if (cs.current_traceframe >= 0) | |
219f2f23 PA |
1017 | return EIO; |
1018 | else | |
90d74c30 PA |
1019 | { |
1020 | int ret; | |
1021 | ||
1022 | ret = prepare_to_access_memory (); | |
1023 | if (ret == 0) | |
1024 | { | |
f557a88a | 1025 | if (set_desired_thread ()) |
4196ab2a | 1026 | ret = target_write_memory (memaddr, myaddr, len); |
f0db101d PA |
1027 | else |
1028 | ret = EIO; | |
0146f85b | 1029 | done_accessing_memory (); |
90d74c30 PA |
1030 | } |
1031 | return ret; | |
1032 | } | |
219f2f23 PA |
1033 | } |
1034 | ||
08388c79 DE |
1035 | /* Subroutine of handle_search_memory to simplify it. */ |
1036 | ||
1037 | static int | |
1038 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
1039 | gdb_byte *pattern, unsigned pattern_len, | |
1040 | gdb_byte *search_buf, | |
1041 | unsigned chunk_size, unsigned search_buf_size, | |
1042 | CORE_ADDR *found_addrp) | |
1043 | { | |
1044 | /* Prime the search buffer. */ | |
1045 | ||
764880b7 PA |
1046 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
1047 | != search_buf_size) | |
08388c79 | 1048 | { |
b3dc46ff AB |
1049 | warning ("Unable to access %ld bytes of target " |
1050 | "memory at 0x%lx, halting search.", | |
1051 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
1052 | return -1; |
1053 | } | |
1054 | ||
1055 | /* Perform the search. | |
1056 | ||
1057 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
1058 | When we've scanned N bytes we copy the trailing bytes to the start and | |
1059 | read in another N bytes. */ | |
1060 | ||
1061 | while (search_space_len >= pattern_len) | |
1062 | { | |
1063 | gdb_byte *found_ptr; | |
1064 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
1065 | ? search_space_len | |
1066 | : search_buf_size); | |
1067 | ||
d6f85c84 SM |
1068 | found_ptr = (gdb_byte *) memmem (search_buf, nr_search_bytes, pattern, |
1069 | pattern_len); | |
08388c79 DE |
1070 | |
1071 | if (found_ptr != NULL) | |
1072 | { | |
1073 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
1074 | *found_addrp = found_addr; | |
1075 | return 1; | |
1076 | } | |
1077 | ||
1078 | /* Not found in this chunk, skip to next chunk. */ | |
1079 | ||
1080 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
1081 | if (search_space_len >= chunk_size) | |
1082 | search_space_len -= chunk_size; | |
1083 | else | |
1084 | search_space_len = 0; | |
1085 | ||
1086 | if (search_space_len >= pattern_len) | |
1087 | { | |
1088 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 1089 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
1090 | int nr_to_read; |
1091 | ||
1092 | /* Copy the trailing part of the previous iteration to the front | |
1093 | of the buffer for the next iteration. */ | |
1094 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
1095 | ||
1096 | nr_to_read = (search_space_len - keep_len < chunk_size | |
1097 | ? search_space_len - keep_len | |
1098 | : chunk_size); | |
1099 | ||
90d74c30 | 1100 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 1101 | nr_to_read) != search_buf_size) |
08388c79 | 1102 | { |
b3dc46ff | 1103 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 1104 | "at 0x%lx, halting search.", |
b3dc46ff | 1105 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
1106 | return -1; |
1107 | } | |
1108 | ||
1109 | start_addr += chunk_size; | |
1110 | } | |
1111 | } | |
1112 | ||
1113 | /* Not found. */ | |
1114 | ||
1115 | return 0; | |
1116 | } | |
1117 | ||
1118 | /* Handle qSearch:memory packets. */ | |
1119 | ||
1120 | static void | |
1121 | handle_search_memory (char *own_buf, int packet_len) | |
1122 | { | |
1123 | CORE_ADDR start_addr; | |
1124 | CORE_ADDR search_space_len; | |
1125 | gdb_byte *pattern; | |
1126 | unsigned int pattern_len; | |
1127 | /* NOTE: also defined in find.c testcase. */ | |
1128 | #define SEARCH_CHUNK_SIZE 16000 | |
1129 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
1130 | /* Buffer to hold memory contents for searching. */ | |
1131 | gdb_byte *search_buf; | |
1132 | unsigned search_buf_size; | |
1133 | int found; | |
1134 | CORE_ADDR found_addr; | |
1135 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
1136 | ||
224c3ddb | 1137 | pattern = (gdb_byte *) malloc (packet_len); |
08388c79 DE |
1138 | if (pattern == NULL) |
1139 | { | |
5e1471f5 | 1140 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1141 | strcpy (own_buf, "E00"); |
1142 | return; | |
1143 | } | |
1144 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
1145 | packet_len - cmd_name_len, | |
1146 | &start_addr, &search_space_len, | |
1147 | pattern, &pattern_len) < 0) | |
1148 | { | |
1149 | free (pattern); | |
5e1471f5 | 1150 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
1151 | strcpy (own_buf, "E00"); |
1152 | return; | |
1153 | } | |
1154 | ||
1155 | search_buf_size = chunk_size + pattern_len - 1; | |
1156 | ||
1157 | /* No point in trying to allocate a buffer larger than the search space. */ | |
1158 | if (search_space_len < search_buf_size) | |
1159 | search_buf_size = search_space_len; | |
1160 | ||
224c3ddb | 1161 | search_buf = (gdb_byte *) malloc (search_buf_size); |
08388c79 DE |
1162 | if (search_buf == NULL) |
1163 | { | |
1164 | free (pattern); | |
5e1471f5 | 1165 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1166 | strcpy (own_buf, "E00"); |
1167 | return; | |
1168 | } | |
1169 | ||
1170 | found = handle_search_memory_1 (start_addr, search_space_len, | |
1171 | pattern, pattern_len, | |
1172 | search_buf, chunk_size, search_buf_size, | |
1173 | &found_addr); | |
1174 | ||
1175 | if (found > 0) | |
1176 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
1177 | else if (found == 0) | |
1178 | strcpy (own_buf, "0"); | |
1179 | else | |
1180 | strcpy (own_buf, "E00"); | |
1181 | ||
1182 | free (search_buf); | |
1183 | free (pattern); | |
1184 | } | |
1185 | ||
e8ca139e SM |
1186 | /* Handle the "D" packet. */ |
1187 | ||
1188 | static void | |
1189 | handle_detach (char *own_buf) | |
1190 | { | |
c12a5089 | 1191 | client_state &cs = get_client_state (); |
e8ca139e | 1192 | |
31445d10 | 1193 | process_info *process; |
e8ca139e | 1194 | |
c12a5089 | 1195 | if (cs.multi_process) |
e8ca139e SM |
1196 | { |
1197 | /* skip 'D;' */ | |
31445d10 PA |
1198 | int pid = strtol (&own_buf[2], NULL, 16); |
1199 | ||
1200 | process = find_process_pid (pid); | |
e8ca139e SM |
1201 | } |
1202 | else | |
e8ca139e | 1203 | { |
31445d10 PA |
1204 | process = (current_thread != nullptr |
1205 | ? get_thread_process (current_thread) | |
1206 | : nullptr); | |
1207 | } | |
e8ca139e | 1208 | |
31445d10 PA |
1209 | if (process == NULL) |
1210 | { | |
1211 | write_enn (own_buf); | |
1212 | return; | |
1213 | } | |
e8ca139e | 1214 | |
31445d10 PA |
1215 | if ((tracing && disconnected_tracing) || any_persistent_commands (process)) |
1216 | { | |
e8ca139e SM |
1217 | if (tracing && disconnected_tracing) |
1218 | fprintf (stderr, | |
1219 | "Disconnected tracing in effect, " | |
1220 | "leaving gdbserver attached to the process\n"); | |
1221 | ||
31445d10 | 1222 | if (any_persistent_commands (process)) |
e8ca139e SM |
1223 | fprintf (stderr, |
1224 | "Persistent commands are present, " | |
1225 | "leaving gdbserver attached to the process\n"); | |
1226 | ||
1227 | /* Make sure we're in non-stop/async mode, so we we can both | |
1228 | wait for an async socket accept, and handle async target | |
1229 | events simultaneously. There's also no point either in | |
1230 | having the target stop all threads, when we're going to | |
1231 | pass signals down without informing GDB. */ | |
1232 | if (!non_stop) | |
1233 | { | |
1234 | if (debug_threads) | |
1235 | debug_printf ("Forcing non-stop mode\n"); | |
1236 | ||
3e6ec53a | 1237 | non_stop = true; |
52405d85 | 1238 | the_target->start_non_stop (true); |
e8ca139e SM |
1239 | } |
1240 | ||
1241 | process->gdb_detached = 1; | |
1242 | ||
1243 | /* Detaching implicitly resumes all threads. */ | |
1244 | target_continue_no_signal (minus_one_ptid); | |
1245 | ||
1246 | write_ok (own_buf); | |
1247 | return; | |
1248 | } | |
1249 | ||
31445d10 | 1250 | fprintf (stderr, "Detaching from process %d\n", process->pid); |
e8ca139e | 1251 | stop_tracing (); |
d105de22 TT |
1252 | |
1253 | /* We'll need this after PROCESS has been destroyed. */ | |
1254 | int pid = process->pid; | |
1255 | ||
ef2ddb33 | 1256 | if (detach_inferior (process) != 0) |
e8ca139e SM |
1257 | write_enn (own_buf); |
1258 | else | |
1259 | { | |
d105de22 | 1260 | discard_queued_stop_replies (ptid_t (pid)); |
e8ca139e SM |
1261 | write_ok (own_buf); |
1262 | ||
1263 | if (extended_protocol || target_running ()) | |
1264 | { | |
1265 | /* There is still at least one inferior remaining or | |
1266 | we are in extended mode, so don't terminate gdbserver, | |
1267 | and instead treat this like a normal program exit. */ | |
c12a5089 SC |
1268 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
1269 | cs.last_status.value.integer = 0; | |
d105de22 | 1270 | cs.last_ptid = ptid_t (pid); |
e8ca139e SM |
1271 | |
1272 | current_thread = NULL; | |
1273 | } | |
1274 | else | |
1275 | { | |
1276 | putpkt (own_buf); | |
1277 | remote_close (); | |
1278 | ||
1279 | /* If we are attached, then we can exit. Otherwise, we | |
1280 | need to hang around doing nothing, until the child is | |
1281 | gone. */ | |
d105de22 | 1282 | join_inferior (pid); |
e8ca139e SM |
1283 | exit (0); |
1284 | } | |
1285 | } | |
1286 | } | |
1287 | ||
87ce2a04 DE |
1288 | /* Parse options to --debug-format= and "monitor set debug-format". |
1289 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
1290 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
1291 | This triggers calls to monitor_output. | |
e80aaf61 SM |
1292 | The result is an empty string if all options were parsed ok, otherwise an |
1293 | error message which the caller must free. | |
87ce2a04 DE |
1294 | |
1295 | N.B. These commands affect all debug format settings, they are not | |
1296 | cumulative. If a format is not specified, it is turned off. | |
1297 | However, we don't go to extra trouble with things like | |
1298 | "monitor set debug-format all,none,timestamp". | |
1299 | Instead we just parse them one at a time, in order. | |
1300 | ||
1301 | The syntax for "monitor set debug" we support here is not identical | |
1302 | to gdb's "set debug foo on|off" because we also use this function to | |
1303 | parse "--debug-format=foo,bar". */ | |
1304 | ||
2cc05030 | 1305 | static std::string |
87ce2a04 DE |
1306 | parse_debug_format_options (const char *arg, int is_monitor) |
1307 | { | |
87ce2a04 DE |
1308 | /* First turn all debug format options off. */ |
1309 | debug_timestamp = 0; | |
1310 | ||
1311 | /* First remove leading spaces, for "monitor set debug-format". */ | |
1312 | while (isspace (*arg)) | |
1313 | ++arg; | |
1314 | ||
e80aaf61 SM |
1315 | std::vector<gdb::unique_xmalloc_ptr<char>> options |
1316 | = delim_string_to_char_ptr_vec (arg, ','); | |
87ce2a04 | 1317 | |
e80aaf61 | 1318 | for (const gdb::unique_xmalloc_ptr<char> &option : options) |
87ce2a04 | 1319 | { |
e80aaf61 | 1320 | if (strcmp (option.get (), "all") == 0) |
87ce2a04 DE |
1321 | { |
1322 | debug_timestamp = 1; | |
1323 | if (is_monitor) | |
1324 | monitor_output ("All extra debug format options enabled.\n"); | |
1325 | } | |
e80aaf61 | 1326 | else if (strcmp (option.get (), "none") == 0) |
87ce2a04 DE |
1327 | { |
1328 | debug_timestamp = 0; | |
1329 | if (is_monitor) | |
1330 | monitor_output ("All extra debug format options disabled.\n"); | |
1331 | } | |
e80aaf61 | 1332 | else if (strcmp (option.get (), "timestamp") == 0) |
87ce2a04 DE |
1333 | { |
1334 | debug_timestamp = 1; | |
1335 | if (is_monitor) | |
1336 | monitor_output ("Timestamps will be added to debug output.\n"); | |
1337 | } | |
87ce2a04 DE |
1338 | else if (*option == '\0') |
1339 | { | |
1340 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
1341 | continue; | |
1342 | } | |
1343 | else | |
e80aaf61 SM |
1344 | return string_printf ("Unknown debug-format argument: \"%s\"\n", |
1345 | option.get ()); | |
87ce2a04 DE |
1346 | } |
1347 | ||
2cc05030 | 1348 | return std::string (); |
87ce2a04 DE |
1349 | } |
1350 | ||
cdbfd419 PP |
1351 | /* Handle monitor commands not handled by target-specific handlers. */ |
1352 | ||
1353 | static void | |
d73f2619 | 1354 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
1355 | { |
1356 | if (strcmp (mon, "set debug 1") == 0) | |
1357 | { | |
1358 | debug_threads = 1; | |
1359 | monitor_output ("Debug output enabled.\n"); | |
1360 | } | |
1361 | else if (strcmp (mon, "set debug 0") == 0) | |
1362 | { | |
1363 | debug_threads = 0; | |
1364 | monitor_output ("Debug output disabled.\n"); | |
1365 | } | |
1366 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
1367 | { | |
c5e92cca | 1368 | show_debug_regs = 1; |
cdbfd419 PP |
1369 | monitor_output ("H/W point debugging output enabled.\n"); |
1370 | } | |
1371 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1372 | { | |
c5e92cca | 1373 | show_debug_regs = 0; |
cdbfd419 PP |
1374 | monitor_output ("H/W point debugging output disabled.\n"); |
1375 | } | |
1376 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1377 | { | |
1378 | remote_debug = 1; | |
1379 | monitor_output ("Protocol debug output enabled.\n"); | |
1380 | } | |
1381 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1382 | { | |
1383 | remote_debug = 0; | |
1384 | monitor_output ("Protocol debug output disabled.\n"); | |
1385 | } | |
61012eef | 1386 | else if (startswith (mon, "set debug-format ")) |
87ce2a04 | 1387 | { |
2cc05030 | 1388 | std::string error_msg |
87ce2a04 DE |
1389 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, |
1390 | 1); | |
1391 | ||
2cc05030 | 1392 | if (!error_msg.empty ()) |
87ce2a04 | 1393 | { |
2cc05030 | 1394 | monitor_output (error_msg.c_str ()); |
87ce2a04 DE |
1395 | monitor_show_help (); |
1396 | write_enn (own_buf); | |
87ce2a04 DE |
1397 | } |
1398 | } | |
aeb2e706 AH |
1399 | else if (strcmp (mon, "set debug-file") == 0) |
1400 | debug_set_output (nullptr); | |
1401 | else if (startswith (mon, "set debug-file ")) | |
1402 | debug_set_output (mon + sizeof ("set debug-file ") - 1); | |
cdbfd419 PP |
1403 | else if (strcmp (mon, "help") == 0) |
1404 | monitor_show_help (); | |
1405 | else if (strcmp (mon, "exit") == 0) | |
3e6ec53a | 1406 | exit_requested = true; |
cdbfd419 PP |
1407 | else |
1408 | { | |
1409 | monitor_output ("Unknown monitor command.\n\n"); | |
1410 | monitor_show_help (); | |
1411 | write_enn (own_buf); | |
1412 | } | |
1413 | } | |
1414 | ||
d08aafef PA |
1415 | /* Associates a callback with each supported qXfer'able object. */ |
1416 | ||
1417 | struct qxfer | |
1418 | { | |
1419 | /* The object this handler handles. */ | |
1420 | const char *object; | |
1421 | ||
1422 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1423 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1424 | the starting point. The ANNEX can be used to provide additional | |
1425 | data-specific information to the target. | |
1426 | ||
1427 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1428 | further transfer is possible, -1 on error, -2 when the transfer |
1429 | is not supported, and -3 on a verbose error message that should | |
1430 | be preserved. Return of a positive value smaller than LEN does | |
1431 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1432 | |
1433 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1434 | int (*xfer) (const char *annex, | |
1435 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1436 | ULONGEST offset, LONGEST len); | |
1437 | }; | |
1438 | ||
1439 | /* Handle qXfer:auxv:read. */ | |
1440 | ||
1441 | static int | |
1442 | handle_qxfer_auxv (const char *annex, | |
1443 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1444 | ULONGEST offset, LONGEST len) | |
1445 | { | |
52405d85 | 1446 | if (!the_target->supports_read_auxv () || writebuf != NULL) |
d08aafef PA |
1447 | return -2; |
1448 | ||
f0db101d | 1449 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1450 | return -1; |
1451 | ||
52405d85 | 1452 | return the_target->read_auxv (offset, readbuf, 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 | { | |
835205d0 | 1462 | char *file; |
e57f1de3 GB |
1463 | ULONGEST pid; |
1464 | int total_len; | |
1465 | ||
52405d85 | 1466 | if (!the_target->supports_pid_to_exec_file () || writebuf != NULL) |
e57f1de3 GB |
1467 | return -2; |
1468 | ||
256642e8 | 1469 | if (annex[0] == '\0') |
835205d0 GB |
1470 | { |
1471 | if (current_thread == NULL) | |
1472 | return -1; | |
1473 | ||
1474 | pid = pid_of (current_thread); | |
1475 | } | |
1476 | else | |
1477 | { | |
835205d0 | 1478 | annex = unpack_varlen_hex (annex, &pid); |
835205d0 GB |
1479 | if (annex[0] != '\0') |
1480 | return -1; | |
1481 | } | |
1482 | ||
1483 | if (pid <= 0) | |
e57f1de3 GB |
1484 | return -1; |
1485 | ||
52405d85 | 1486 | file = the_target->pid_to_exec_file (pid); |
e57f1de3 GB |
1487 | if (file == NULL) |
1488 | return -1; | |
1489 | ||
1490 | total_len = strlen (file); | |
1491 | ||
1492 | if (offset > total_len) | |
1493 | return -1; | |
1494 | ||
1495 | if (offset + len > total_len) | |
1496 | len = total_len - offset; | |
1497 | ||
1498 | memcpy (readbuf, file + offset, len); | |
1499 | return len; | |
1500 | } | |
1501 | ||
d08aafef PA |
1502 | /* Handle qXfer:features:read. */ |
1503 | ||
1504 | static int | |
1505 | handle_qxfer_features (const char *annex, | |
1506 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1507 | ULONGEST offset, LONGEST len) | |
1508 | { | |
1509 | const char *document; | |
1510 | size_t total_len; | |
1511 | ||
1512 | if (writebuf != NULL) | |
1513 | return -2; | |
1514 | ||
1515 | if (!target_running ()) | |
1516 | return -1; | |
1517 | ||
1518 | /* Grab the correct annex. */ | |
1519 | document = get_features_xml (annex); | |
1520 | if (document == NULL) | |
1521 | return -1; | |
1522 | ||
1523 | total_len = strlen (document); | |
1524 | ||
1525 | if (offset > total_len) | |
1526 | return -1; | |
1527 | ||
1528 | if (offset + len > total_len) | |
1529 | len = total_len - offset; | |
1530 | ||
1531 | memcpy (readbuf, document + offset, len); | |
1532 | return len; | |
1533 | } | |
1534 | ||
1535 | /* Handle qXfer:libraries:read. */ | |
1536 | ||
1537 | static int | |
1538 | handle_qxfer_libraries (const char *annex, | |
1539 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1540 | ULONGEST offset, LONGEST len) | |
1541 | { | |
d08aafef PA |
1542 | if (writebuf != NULL) |
1543 | return -2; | |
1544 | ||
f0db101d | 1545 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1546 | return -1; |
1547 | ||
04fd3ba9 | 1548 | std::string document = "<library-list version=\"1.0\">\n"; |
d08aafef | 1549 | |
c9cb8905 SM |
1550 | for (const dll_info &dll : all_dlls) |
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 |
c0e15c9b | 1642 | handle_qxfer_threads_worker (thread_info *thread, struct buffer *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 | |
649ebbca | 1653 | write_ptid (ptid_s, ptid); |
dc146f7c | 1654 | |
79efa585 SM |
1655 | buffer_xml_printf (buffer, "<thread id=\"%s\"", ptid_s); |
1656 | ||
649ebbca | 1657 | if (core != -1) |
dc146f7c | 1658 | { |
649ebbca | 1659 | sprintf (core_s, "%d", core); |
79efa585 | 1660 | buffer_xml_printf (buffer, " core=\"%s\"", core_s); |
649ebbca | 1661 | } |
79efa585 SM |
1662 | |
1663 | if (name != NULL) | |
1664 | buffer_xml_printf (buffer, " name=\"%s\"", name); | |
1665 | ||
f6327dcb KB |
1666 | if (handle_status) |
1667 | { | |
1668 | char *handle_s = (char *) alloca (handle_len * 2 + 1); | |
1669 | bin2hex (handle, handle_s, handle_len); | |
1670 | buffer_xml_printf (buffer, " handle=\"%s\"", handle_s); | |
1671 | } | |
1672 | ||
79efa585 | 1673 | buffer_xml_printf (buffer, "/>\n"); |
649ebbca | 1674 | } |
dc146f7c | 1675 | |
649ebbca | 1676 | /* Helper for handle_qxfer_threads. */ |
dc146f7c | 1677 | |
649ebbca DE |
1678 | static void |
1679 | handle_qxfer_threads_proper (struct buffer *buffer) | |
1680 | { | |
1681 | buffer_grow_str (buffer, "<threads>\n"); | |
1682 | ||
c0e15c9b SM |
1683 | for_each_thread ([&] (thread_info *thread) |
1684 | { | |
1685 | handle_qxfer_threads_worker (thread, buffer); | |
1686 | }); | |
dc146f7c VP |
1687 | |
1688 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1689 | } | |
1690 | ||
d08aafef PA |
1691 | /* Handle qXfer:threads:read. */ |
1692 | ||
dc146f7c | 1693 | static int |
d08aafef PA |
1694 | handle_qxfer_threads (const char *annex, |
1695 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1696 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1697 | { |
1698 | static char *result = 0; | |
1699 | static unsigned int result_length = 0; | |
1700 | ||
d08aafef PA |
1701 | if (writebuf != NULL) |
1702 | return -2; | |
1703 | ||
f0db101d | 1704 | if (annex[0] != '\0') |
d08aafef | 1705 | return -1; |
dc146f7c VP |
1706 | |
1707 | if (offset == 0) | |
1708 | { | |
1709 | struct buffer buffer; | |
1710 | /* When asked for data at offset 0, generate everything and store into | |
1711 | 'result'. Successive reads will be served off 'result'. */ | |
1712 | if (result) | |
1713 | free (result); | |
1714 | ||
1715 | buffer_init (&buffer); | |
1716 | ||
d08aafef | 1717 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1718 | |
1719 | result = buffer_finish (&buffer); | |
1720 | result_length = strlen (result); | |
1721 | buffer_free (&buffer); | |
1722 | } | |
1723 | ||
1724 | if (offset >= result_length) | |
1725 | { | |
1726 | /* We're out of data. */ | |
1727 | free (result); | |
1728 | result = NULL; | |
1729 | result_length = 0; | |
1730 | return 0; | |
1731 | } | |
1732 | ||
d08aafef PA |
1733 | if (len > result_length - offset) |
1734 | len = result_length - offset; | |
1735 | ||
1736 | memcpy (readbuf, result + offset, len); | |
1737 | ||
1738 | return len; | |
1739 | } | |
1740 | ||
b3b9301e PA |
1741 | /* Handle qXfer:traceframe-info:read. */ |
1742 | ||
1743 | static int | |
1744 | handle_qxfer_traceframe_info (const char *annex, | |
1745 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1746 | ULONGEST offset, LONGEST len) | |
1747 | { | |
c12a5089 | 1748 | client_state &cs = get_client_state (); |
b3b9301e PA |
1749 | static char *result = 0; |
1750 | static unsigned int result_length = 0; | |
1751 | ||
1752 | if (writebuf != NULL) | |
1753 | return -2; | |
1754 | ||
c12a5089 | 1755 | if (!target_running () || annex[0] != '\0' || cs.current_traceframe == -1) |
b3b9301e PA |
1756 | return -1; |
1757 | ||
1758 | if (offset == 0) | |
1759 | { | |
1760 | struct buffer buffer; | |
1761 | ||
1762 | /* When asked for data at offset 0, generate everything and | |
1763 | store into 'result'. Successive reads will be served off | |
1764 | 'result'. */ | |
1765 | free (result); | |
1766 | ||
1767 | buffer_init (&buffer); | |
1768 | ||
c12a5089 | 1769 | traceframe_read_info (cs.current_traceframe, &buffer); |
b3b9301e PA |
1770 | |
1771 | result = buffer_finish (&buffer); | |
1772 | result_length = strlen (result); | |
1773 | buffer_free (&buffer); | |
1774 | } | |
1775 | ||
1776 | if (offset >= result_length) | |
1777 | { | |
1778 | /* We're out of data. */ | |
1779 | free (result); | |
1780 | result = NULL; | |
1781 | result_length = 0; | |
1782 | return 0; | |
1783 | } | |
1784 | ||
1785 | if (len > result_length - offset) | |
1786 | len = result_length - offset; | |
1787 | ||
1788 | memcpy (readbuf, result + offset, len); | |
1789 | return len; | |
1790 | } | |
1791 | ||
78d85199 YQ |
1792 | /* Handle qXfer:fdpic:read. */ |
1793 | ||
1794 | static int | |
1795 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1796 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1797 | { | |
52405d85 | 1798 | if (!the_target->supports_read_loadmap ()) |
78d85199 YQ |
1799 | return -2; |
1800 | ||
f0db101d | 1801 | if (current_thread == NULL) |
78d85199 YQ |
1802 | return -1; |
1803 | ||
52405d85 | 1804 | return the_target->read_loadmap (annex, offset, readbuf, len); |
78d85199 YQ |
1805 | } |
1806 | ||
9accd112 MM |
1807 | /* Handle qXfer:btrace:read. */ |
1808 | ||
1809 | static int | |
1810 | handle_qxfer_btrace (const char *annex, | |
1811 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1812 | ULONGEST offset, LONGEST len) | |
1813 | { | |
c12a5089 | 1814 | client_state &cs = get_client_state (); |
9accd112 MM |
1815 | static struct buffer cache; |
1816 | struct thread_info *thread; | |
add67df8 PA |
1817 | enum btrace_read_type type; |
1818 | int result; | |
9accd112 | 1819 | |
b1223e78 | 1820 | if (writebuf != NULL) |
9accd112 MM |
1821 | return -2; |
1822 | ||
d7e15655 TT |
1823 | if (cs.general_thread == null_ptid |
1824 | || cs.general_thread == minus_one_ptid) | |
9accd112 | 1825 | { |
c12a5089 | 1826 | strcpy (cs.own_buf, "E.Must select a single thread."); |
9accd112 MM |
1827 | return -3; |
1828 | } | |
1829 | ||
c12a5089 | 1830 | thread = find_thread_ptid (cs.general_thread); |
9accd112 MM |
1831 | if (thread == NULL) |
1832 | { | |
c12a5089 | 1833 | strcpy (cs.own_buf, "E.No such thread."); |
9accd112 MM |
1834 | return -3; |
1835 | } | |
1836 | ||
1837 | if (thread->btrace == NULL) | |
1838 | { | |
c12a5089 | 1839 | strcpy (cs.own_buf, "E.Btrace not enabled."); |
9accd112 MM |
1840 | return -3; |
1841 | } | |
1842 | ||
1843 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1844 | type = BTRACE_READ_ALL; |
9accd112 | 1845 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1846 | type = BTRACE_READ_NEW; |
969c39fb MM |
1847 | else if (strcmp (annex, "delta") == 0) |
1848 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1849 | else |
1850 | { | |
c12a5089 | 1851 | strcpy (cs.own_buf, "E.Bad annex."); |
9accd112 MM |
1852 | return -3; |
1853 | } | |
1854 | ||
1855 | if (offset == 0) | |
1856 | { | |
1857 | buffer_free (&cache); | |
1858 | ||
a70b8144 | 1859 | try |
b1223e78 MM |
1860 | { |
1861 | result = target_read_btrace (thread->btrace, &cache, type); | |
1862 | if (result != 0) | |
c12a5089 | 1863 | memcpy (cs.own_buf, cache.buffer, cache.used_size); |
b1223e78 | 1864 | } |
230d2906 | 1865 | catch (const gdb_exception_error &exception) |
969c39fb | 1866 | { |
3d6e9d23 | 1867 | sprintf (cs.own_buf, "E.%s", exception.what ()); |
b1223e78 | 1868 | result = -1; |
969c39fb | 1869 | } |
b1223e78 MM |
1870 | |
1871 | if (result != 0) | |
1872 | return -3; | |
9accd112 MM |
1873 | } |
1874 | else if (offset > cache.used_size) | |
1875 | { | |
1876 | buffer_free (&cache); | |
1877 | return -3; | |
1878 | } | |
1879 | ||
1880 | if (len > cache.used_size - offset) | |
1881 | len = cache.used_size - offset; | |
1882 | ||
1883 | memcpy (readbuf, cache.buffer + offset, len); | |
1884 | ||
1885 | return len; | |
1886 | } | |
1887 | ||
f4abbc16 MM |
1888 | /* Handle qXfer:btrace-conf:read. */ |
1889 | ||
1890 | static int | |
1891 | handle_qxfer_btrace_conf (const char *annex, | |
1892 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1893 | ULONGEST offset, LONGEST len) | |
1894 | { | |
c12a5089 | 1895 | client_state &cs = get_client_state (); |
f4abbc16 MM |
1896 | static struct buffer cache; |
1897 | struct thread_info *thread; | |
1898 | int result; | |
1899 | ||
b1223e78 | 1900 | if (writebuf != NULL) |
f4abbc16 MM |
1901 | return -2; |
1902 | ||
f0db101d | 1903 | if (annex[0] != '\0') |
f4abbc16 MM |
1904 | return -1; |
1905 | ||
d7e15655 TT |
1906 | if (cs.general_thread == null_ptid |
1907 | || cs.general_thread == minus_one_ptid) | |
f4abbc16 | 1908 | { |
c12a5089 | 1909 | strcpy (cs.own_buf, "E.Must select a single thread."); |
f4abbc16 MM |
1910 | return -3; |
1911 | } | |
1912 | ||
c12a5089 | 1913 | thread = find_thread_ptid (cs.general_thread); |
f4abbc16 MM |
1914 | if (thread == NULL) |
1915 | { | |
c12a5089 | 1916 | strcpy (cs.own_buf, "E.No such thread."); |
f4abbc16 MM |
1917 | return -3; |
1918 | } | |
1919 | ||
1920 | if (thread->btrace == NULL) | |
1921 | { | |
c12a5089 | 1922 | strcpy (cs.own_buf, "E.Btrace not enabled."); |
f4abbc16 MM |
1923 | return -3; |
1924 | } | |
1925 | ||
1926 | if (offset == 0) | |
1927 | { | |
1928 | buffer_free (&cache); | |
1929 | ||
a70b8144 | 1930 | try |
b1223e78 MM |
1931 | { |
1932 | result = target_read_btrace_conf (thread->btrace, &cache); | |
1933 | if (result != 0) | |
c12a5089 | 1934 | memcpy (cs.own_buf, cache.buffer, cache.used_size); |
b1223e78 | 1935 | } |
230d2906 | 1936 | catch (const gdb_exception_error &exception) |
f4abbc16 | 1937 | { |
3d6e9d23 | 1938 | sprintf (cs.own_buf, "E.%s", exception.what ()); |
b1223e78 | 1939 | result = -1; |
f4abbc16 | 1940 | } |
b1223e78 MM |
1941 | |
1942 | if (result != 0) | |
1943 | return -3; | |
f4abbc16 MM |
1944 | } |
1945 | else if (offset > cache.used_size) | |
1946 | { | |
1947 | buffer_free (&cache); | |
1948 | return -3; | |
1949 | } | |
1950 | ||
1951 | if (len > cache.used_size - offset) | |
1952 | len = cache.used_size - offset; | |
1953 | ||
1954 | memcpy (readbuf, cache.buffer + offset, len); | |
1955 | ||
1956 | return len; | |
1957 | } | |
1958 | ||
d08aafef PA |
1959 | static const struct qxfer qxfer_packets[] = |
1960 | { | |
1961 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1962 | { "btrace", handle_qxfer_btrace }, |
f4abbc16 | 1963 | { "btrace-conf", handle_qxfer_btrace_conf }, |
e57f1de3 | 1964 | { "exec-file", handle_qxfer_exec_file}, |
78d85199 | 1965 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1966 | { "features", handle_qxfer_features }, |
1967 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1968 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1969 | { "osdata", handle_qxfer_osdata }, |
1970 | { "siginfo", handle_qxfer_siginfo }, | |
d08aafef PA |
1971 | { "statictrace", handle_qxfer_statictrace }, |
1972 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1973 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1974 | }; |
1975 | ||
1976 | static int | |
1977 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1978 | { | |
1979 | int i; | |
1980 | char *object; | |
1981 | char *rw; | |
1982 | char *annex; | |
1983 | char *offset; | |
1984 | ||
61012eef | 1985 | if (!startswith (own_buf, "qXfer:")) |
d08aafef PA |
1986 | return 0; |
1987 | ||
1988 | /* Grab the object, r/w and annex. */ | |
1989 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1990 | { | |
1991 | write_enn (own_buf); | |
1992 | return 1; | |
1993 | } | |
1994 | ||
1995 | for (i = 0; | |
1996 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1997 | i++) | |
1998 | { | |
1999 | const struct qxfer *q = &qxfer_packets[i]; | |
2000 | ||
2001 | if (strcmp (object, q->object) == 0) | |
2002 | { | |
2003 | if (strcmp (rw, "read") == 0) | |
2004 | { | |
2005 | unsigned char *data; | |
2006 | int n; | |
2007 | CORE_ADDR ofs; | |
2008 | unsigned int len; | |
2009 | ||
2010 | /* Grab the offset and length. */ | |
2011 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
2012 | { | |
2013 | write_enn (own_buf); | |
2014 | return 1; | |
2015 | } | |
2016 | ||
2017 | /* Read one extra byte, as an indicator of whether there is | |
2018 | more. */ | |
2019 | if (len > PBUFSIZ - 2) | |
2020 | len = PBUFSIZ - 2; | |
224c3ddb | 2021 | data = (unsigned char *) malloc (len + 1); |
d08aafef PA |
2022 | if (data == NULL) |
2023 | { | |
2024 | write_enn (own_buf); | |
2025 | return 1; | |
2026 | } | |
2027 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
2028 | if (n == -2) | |
2029 | { | |
2030 | free (data); | |
2031 | return 0; | |
2032 | } | |
5cc22e4c MM |
2033 | else if (n == -3) |
2034 | { | |
2035 | /* Preserve error message. */ | |
2036 | } | |
d08aafef PA |
2037 | else if (n < 0) |
2038 | write_enn (own_buf); | |
2039 | else if (n > len) | |
2040 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
2041 | else | |
2042 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
2043 | ||
2044 | free (data); | |
2045 | return 1; | |
2046 | } | |
2047 | else if (strcmp (rw, "write") == 0) | |
2048 | { | |
2049 | int n; | |
2050 | unsigned int len; | |
2051 | CORE_ADDR ofs; | |
2052 | unsigned char *data; | |
2053 | ||
2054 | strcpy (own_buf, "E00"); | |
224c3ddb | 2055 | data = (unsigned char *) malloc (packet_len - (offset - own_buf)); |
d08aafef PA |
2056 | if (data == NULL) |
2057 | { | |
2058 | write_enn (own_buf); | |
2059 | return 1; | |
2060 | } | |
2061 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
2062 | &ofs, &len, data) < 0) | |
2063 | { | |
2064 | free (data); | |
2065 | write_enn (own_buf); | |
2066 | return 1; | |
2067 | } | |
2068 | ||
2069 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
2070 | if (n == -2) | |
2071 | { | |
2072 | free (data); | |
2073 | return 0; | |
2074 | } | |
5cc22e4c MM |
2075 | else if (n == -3) |
2076 | { | |
2077 | /* Preserve error message. */ | |
2078 | } | |
d08aafef PA |
2079 | else if (n < 0) |
2080 | write_enn (own_buf); | |
2081 | else | |
2082 | sprintf (own_buf, "%x", n); | |
dc146f7c | 2083 | |
d08aafef PA |
2084 | free (data); |
2085 | return 1; | |
2086 | } | |
dc146f7c | 2087 | |
d08aafef PA |
2088 | return 0; |
2089 | } | |
2090 | } | |
dc146f7c | 2091 | |
d08aafef | 2092 | return 0; |
dc146f7c VP |
2093 | } |
2094 | ||
30ba68cb MS |
2095 | /* Compute 32 bit CRC from inferior memory. |
2096 | ||
2097 | On success, return 32 bit CRC. | |
2098 | On failure, return (unsigned long long) -1. */ | |
2099 | ||
2100 | static unsigned long long | |
2101 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
2102 | { | |
30ba68cb MS |
2103 | while (len--) |
2104 | { | |
2105 | unsigned char byte = 0; | |
2106 | ||
2107 | /* Return failure if memory read fails. */ | |
2108 | if (read_inferior_memory (base, &byte, 1) != 0) | |
2109 | return (unsigned long long) -1; | |
2110 | ||
65da7f14 | 2111 | crc = xcrc32 (&byte, 1, crc); |
30ba68cb MS |
2112 | base++; |
2113 | } | |
2114 | return (unsigned long long) crc; | |
2115 | } | |
2116 | ||
043c3577 MM |
2117 | /* Add supported btrace packets to BUF. */ |
2118 | ||
2119 | static void | |
2120 | supported_btrace_packets (char *buf) | |
2121 | { | |
de6242d3 MM |
2122 | strcat (buf, ";Qbtrace:bts+"); |
2123 | strcat (buf, ";Qbtrace-conf:bts:size+"); | |
2124 | strcat (buf, ";Qbtrace:pt+"); | |
2125 | strcat (buf, ";Qbtrace-conf:pt:size+"); | |
043c3577 MM |
2126 | strcat (buf, ";Qbtrace:off+"); |
2127 | strcat (buf, ";qXfer:btrace:read+"); | |
f4abbc16 | 2128 | strcat (buf, ";qXfer:btrace-conf:read+"); |
043c3577 MM |
2129 | } |
2130 | ||
ce3a066d | 2131 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 2132 | |
5b3da067 | 2133 | static void |
0e7f50da | 2134 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 2135 | { |
c12a5089 | 2136 | client_state &cs = get_client_state (); |
9c80ecd6 | 2137 | static std::list<thread_info *>::const_iterator thread_iter; |
0d62e5e8 | 2138 | |
bb63802a | 2139 | /* Reply the current thread id. */ |
db42f210 | 2140 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 2141 | { |
124aceb4 | 2142 | ptid_t ptid; |
f8a4e119 | 2143 | require_running_or_return (own_buf); |
bd99dc85 | 2144 | |
c12a5089 SC |
2145 | if (cs.general_thread != null_ptid && cs.general_thread != minus_one_ptid) |
2146 | ptid = cs.general_thread; | |
bd99dc85 PA |
2147 | else |
2148 | { | |
9c80ecd6 SM |
2149 | thread_iter = all_threads.begin (); |
2150 | ptid = (*thread_iter)->id; | |
bd99dc85 PA |
2151 | } |
2152 | ||
95954743 PA |
2153 | sprintf (own_buf, "QC"); |
2154 | own_buf += 2; | |
124aceb4 | 2155 | write_ptid (own_buf, ptid); |
bb63802a UW |
2156 | return; |
2157 | } | |
2158 | ||
ce3a066d DJ |
2159 | if (strcmp ("qSymbol::", own_buf) == 0) |
2160 | { | |
34c65914 PA |
2161 | struct thread_info *save_thread = current_thread; |
2162 | ||
2163 | /* For qSymbol, GDB only changes the current thread if the | |
2164 | previous current thread was of a different process. So if | |
2165 | the previous thread is gone, we need to pick another one of | |
2166 | the same process. This can happen e.g., if we followed an | |
2167 | exec in a non-leader thread. */ | |
2168 | if (current_thread == NULL) | |
2169 | { | |
2170 | current_thread | |
e99b03dc | 2171 | = find_any_thread_of_pid (cs.general_thread.pid ()); |
34c65914 PA |
2172 | |
2173 | /* Just in case, if we didn't find a thread, then bail out | |
2174 | instead of crashing. */ | |
2175 | if (current_thread == NULL) | |
2176 | { | |
2177 | write_enn (own_buf); | |
2178 | current_thread = save_thread; | |
2179 | return; | |
2180 | } | |
2181 | } | |
2182 | ||
d3bbe7a0 PA |
2183 | /* GDB is suggesting new symbols have been loaded. This may |
2184 | mean a new shared library has been detected as loaded, so | |
2185 | take the opportunity to check if breakpoints we think are | |
2186 | inserted, still are. Note that it isn't guaranteed that | |
2187 | we'll see this when a shared library is loaded, and nor will | |
2188 | we see this for unloads (although breakpoints in unloaded | |
2189 | libraries shouldn't trigger), as GDB may not find symbols for | |
2190 | the library at all. We also re-validate breakpoints when we | |
2191 | see a second GDB breakpoint for the same address, and or when | |
2192 | we access breakpoint shadows. */ | |
2193 | validate_breakpoints (); | |
2194 | ||
fa593d66 PA |
2195 | if (target_supports_tracepoints ()) |
2196 | tracepoint_look_up_symbols (); | |
2197 | ||
2a31c7aa | 2198 | if (current_thread != NULL) |
52405d85 | 2199 | the_target->look_up_symbols (); |
2f2893d9 | 2200 | |
34c65914 PA |
2201 | current_thread = save_thread; |
2202 | ||
ce3a066d DJ |
2203 | strcpy (own_buf, "OK"); |
2204 | return; | |
2205 | } | |
2206 | ||
db42f210 | 2207 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 2208 | { |
db42f210 | 2209 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 2210 | { |
f8a4e119 | 2211 | require_running_or_return (own_buf); |
9c80ecd6 | 2212 | thread_iter = all_threads.begin (); |
95954743 PA |
2213 | |
2214 | *own_buf++ = 'm'; | |
9c80ecd6 SM |
2215 | ptid_t ptid = (*thread_iter)->id; |
2216 | write_ptid (own_buf, ptid); | |
2217 | thread_iter++; | |
0d62e5e8 DJ |
2218 | return; |
2219 | } | |
db42f210 PA |
2220 | |
2221 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 2222 | { |
f8a4e119 | 2223 | require_running_or_return (own_buf); |
9c80ecd6 | 2224 | if (thread_iter != all_threads.end ()) |
db42f210 | 2225 | { |
95954743 | 2226 | *own_buf++ = 'm'; |
9c80ecd6 SM |
2227 | ptid_t ptid = (*thread_iter)->id; |
2228 | write_ptid (own_buf, ptid); | |
2229 | thread_iter++; | |
db42f210 PA |
2230 | return; |
2231 | } | |
2232 | else | |
2233 | { | |
2234 | sprintf (own_buf, "l"); | |
2235 | return; | |
2236 | } | |
0d62e5e8 DJ |
2237 | } |
2238 | } | |
aa691b87 | 2239 | |
52405d85 | 2240 | if (the_target->supports_read_offsets () |
52fb6437 NS |
2241 | && strcmp ("qOffsets", own_buf) == 0) |
2242 | { | |
2243 | CORE_ADDR text, data; | |
2d717e4f | 2244 | |
f8a4e119 | 2245 | require_running_or_return (own_buf); |
52405d85 | 2246 | if (the_target->read_offsets (&text, &data)) |
52fb6437 NS |
2247 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", |
2248 | (long)text, (long)data, (long)data); | |
2249 | else | |
2250 | write_enn (own_buf); | |
1b3f6016 | 2251 | |
52fb6437 NS |
2252 | return; |
2253 | } | |
2254 | ||
be2a5f71 | 2255 | /* Protocol features query. */ |
61012eef | 2256 | if (startswith (own_buf, "qSupported") |
be2a5f71 DJ |
2257 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
2258 | { | |
95954743 | 2259 | char *p = &own_buf[10]; |
fa593d66 | 2260 | int gdb_supports_qRelocInsn = 0; |
95954743 PA |
2261 | |
2262 | /* Process each feature being provided by GDB. The first | |
2263 | feature will follow a ':', and latter features will follow | |
2264 | ';'. */ | |
2265 | if (*p == ':') | |
d149dd1d PA |
2266 | { |
2267 | char **qsupported = NULL; | |
2268 | int count = 0; | |
06e03fff | 2269 | int unknown = 0; |
d149dd1d PA |
2270 | int i; |
2271 | ||
2272 | /* Two passes, to avoid nested strtok calls in | |
2273 | target_process_qsupported. */ | |
ca3a04f6 CB |
2274 | char *saveptr; |
2275 | for (p = strtok_r (p + 1, ";", &saveptr); | |
d149dd1d | 2276 | p != NULL; |
ca3a04f6 | 2277 | p = strtok_r (NULL, ";", &saveptr)) |
d149dd1d PA |
2278 | { |
2279 | count++; | |
224c3ddb | 2280 | qsupported = XRESIZEVEC (char *, qsupported, count); |
d149dd1d PA |
2281 | qsupported[count - 1] = xstrdup (p); |
2282 | } | |
2283 | ||
2284 | for (i = 0; i < count; i++) | |
2285 | { | |
2286 | p = qsupported[i]; | |
2287 | if (strcmp (p, "multiprocess+") == 0) | |
2288 | { | |
2289 | /* GDB supports and wants multi-process support if | |
2290 | possible. */ | |
2291 | if (target_supports_multi_process ()) | |
c12a5089 | 2292 | cs.multi_process = 1; |
d149dd1d | 2293 | } |
fa593d66 PA |
2294 | else if (strcmp (p, "qRelocInsn+") == 0) |
2295 | { | |
2296 | /* GDB supports relocate instruction requests. */ | |
2297 | gdb_supports_qRelocInsn = 1; | |
2298 | } | |
1ec68e26 PA |
2299 | else if (strcmp (p, "swbreak+") == 0) |
2300 | { | |
2301 | /* GDB wants us to report whether a trap is caused | |
2302 | by a software breakpoint and for us to handle PC | |
2303 | adjustment if necessary on this target. */ | |
2304 | if (target_supports_stopped_by_sw_breakpoint ()) | |
c12a5089 | 2305 | cs.swbreak_feature = 1; |
1ec68e26 PA |
2306 | } |
2307 | else if (strcmp (p, "hwbreak+") == 0) | |
2308 | { | |
2309 | /* GDB wants us to report whether a trap is caused | |
2310 | by a hardware breakpoint. */ | |
2311 | if (target_supports_stopped_by_hw_breakpoint ()) | |
c12a5089 | 2312 | cs.hwbreak_feature = 1; |
1ec68e26 | 2313 | } |
89245bc0 DB |
2314 | else if (strcmp (p, "fork-events+") == 0) |
2315 | { | |
2316 | /* GDB supports and wants fork events if possible. */ | |
2317 | if (target_supports_fork_events ()) | |
c12a5089 | 2318 | cs.report_fork_events = 1; |
89245bc0 DB |
2319 | } |
2320 | else if (strcmp (p, "vfork-events+") == 0) | |
2321 | { | |
2322 | /* GDB supports and wants vfork events if possible. */ | |
2323 | if (target_supports_vfork_events ()) | |
c12a5089 | 2324 | cs.report_vfork_events = 1; |
89245bc0 | 2325 | } |
7c5d0fad | 2326 | else if (strcmp (p, "exec-events+") == 0) |
94585166 DB |
2327 | { |
2328 | /* GDB supports and wants exec events if possible. */ | |
2329 | if (target_supports_exec_events ()) | |
c12a5089 | 2330 | cs.report_exec_events = 1; |
94585166 | 2331 | } |
750ce8d1 | 2332 | else if (strcmp (p, "vContSupported+") == 0) |
c12a5089 | 2333 | cs.vCont_supported = 1; |
65706a29 PA |
2334 | else if (strcmp (p, "QThreadEvents+") == 0) |
2335 | ; | |
f2faf941 PA |
2336 | else if (strcmp (p, "no-resumed+") == 0) |
2337 | { | |
2338 | /* GDB supports and wants TARGET_WAITKIND_NO_RESUMED | |
2339 | events. */ | |
3e6ec53a | 2340 | report_no_resumed = true; |
f2faf941 | 2341 | } |
d149dd1d | 2342 | else |
06e03fff PA |
2343 | { |
2344 | /* Move the unknown features all together. */ | |
2345 | qsupported[i] = NULL; | |
2346 | qsupported[unknown] = p; | |
2347 | unknown++; | |
2348 | } | |
d149dd1d PA |
2349 | } |
2350 | ||
06e03fff PA |
2351 | /* Give the target backend a chance to process the unknown |
2352 | features. */ | |
2353 | target_process_qsupported (qsupported, unknown); | |
2354 | ||
2355 | for (i = 0; i < count; i++) | |
2356 | free (qsupported[i]); | |
d149dd1d PA |
2357 | free (qsupported); |
2358 | } | |
95954743 | 2359 | |
9b224c5e | 2360 | sprintf (own_buf, |
0a2dde4a SDJ |
2361 | "PacketSize=%x;QPassSignals+;QProgramSignals+;" |
2362 | "QStartupWithShell+;QEnvironmentHexEncoded+;" | |
bc3b087d SDJ |
2363 | "QEnvironmentReset+;QEnvironmentUnset+;" |
2364 | "QSetWorkingDir+", | |
9b224c5e | 2365 | PBUFSIZ - 1); |
0876f84a | 2366 | |
82075af2 JS |
2367 | if (target_supports_catch_syscall ()) |
2368 | strcat (own_buf, ";QCatchSyscalls+"); | |
2369 | ||
52405d85 | 2370 | if (the_target->supports_qxfer_libraries_svr4 ()) |
b1fbec62 GB |
2371 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
2372 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
2373 | else |
2374 | { | |
2375 | /* We do not have any hook to indicate whether the non-SVR4 target | |
2376 | backend supports qXfer:libraries:read, so always report it. */ | |
2377 | strcat (own_buf, ";qXfer:libraries:read+"); | |
2378 | } | |
255e7678 | 2379 | |
52405d85 | 2380 | if (the_target->supports_read_auxv ()) |
9f2e1e63 | 2381 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 2382 | |
52405d85 | 2383 | if (the_target->supports_qxfer_siginfo ()) |
4aa995e1 PA |
2384 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); |
2385 | ||
52405d85 | 2386 | if (the_target->supports_read_loadmap ()) |
78d85199 YQ |
2387 | strcat (own_buf, ";qXfer:fdpic:read+"); |
2388 | ||
221c031f UW |
2389 | /* We always report qXfer:features:read, as targets may |
2390 | install XML files on a subsequent call to arch_setup. | |
2391 | If we reported to GDB on startup that we don't support | |
2392 | qXfer:feature:read at all, we will never be re-queried. */ | |
2393 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 2394 | |
c12a5089 | 2395 | if (cs.transport_is_reliable) |
a6f3e723 | 2396 | strcat (own_buf, ";QStartNoAckMode+"); |
07e059b5 | 2397 | |
52405d85 | 2398 | if (the_target->supports_qxfer_osdata ()) |
1b3f6016 | 2399 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 2400 | |
cf8fd78b PA |
2401 | if (target_supports_multi_process ()) |
2402 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 2403 | |
89245bc0 DB |
2404 | if (target_supports_fork_events ()) |
2405 | strcat (own_buf, ";fork-events+"); | |
2406 | ||
2407 | if (target_supports_vfork_events ()) | |
2408 | strcat (own_buf, ";vfork-events+"); | |
2409 | ||
94585166 DB |
2410 | if (target_supports_exec_events ()) |
2411 | strcat (own_buf, ";exec-events+"); | |
2412 | ||
bd99dc85 PA |
2413 | if (target_supports_non_stop ()) |
2414 | strcat (own_buf, ";QNonStop+"); | |
2415 | ||
03583c20 UW |
2416 | if (target_supports_disable_randomization ()) |
2417 | strcat (own_buf, ";QDisableRandomization+"); | |
2418 | ||
dc146f7c VP |
2419 | strcat (own_buf, ";qXfer:threads:read+"); |
2420 | ||
219f2f23 PA |
2421 | if (target_supports_tracepoints ()) |
2422 | { | |
2423 | strcat (own_buf, ";ConditionalTracepoints+"); | |
2424 | strcat (own_buf, ";TraceStateVariables+"); | |
2425 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 2426 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
2427 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
2428 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 2429 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 2430 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 2431 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 2432 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 2433 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 2434 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 2435 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
2436 | } |
2437 | ||
bd2b2909 AT |
2438 | if (target_supports_hardware_single_step () |
2439 | || target_supports_software_single_step () ) | |
70b90b91 | 2440 | { |
70b90b91 YQ |
2441 | strcat (own_buf, ";ConditionalBreakpoints+"); |
2442 | } | |
d3ce09f5 | 2443 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 2444 | |
d1feda86 YQ |
2445 | if (target_supports_agent ()) |
2446 | strcat (own_buf, ";QAgent+"); | |
2447 | ||
043c3577 | 2448 | supported_btrace_packets (own_buf); |
9accd112 | 2449 | |
1ec68e26 PA |
2450 | if (target_supports_stopped_by_sw_breakpoint ()) |
2451 | strcat (own_buf, ";swbreak+"); | |
2452 | ||
2453 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2454 | strcat (own_buf, ";hwbreak+"); | |
2455 | ||
52405d85 | 2456 | if (the_target->supports_pid_to_exec_file ()) |
e57f1de3 GB |
2457 | strcat (own_buf, ";qXfer:exec-file:read+"); |
2458 | ||
750ce8d1 YQ |
2459 | strcat (own_buf, ";vContSupported+"); |
2460 | ||
65706a29 PA |
2461 | strcat (own_buf, ";QThreadEvents+"); |
2462 | ||
f2faf941 PA |
2463 | strcat (own_buf, ";no-resumed+"); |
2464 | ||
14d2069a GB |
2465 | /* Reinitialize components as needed for the new connection. */ |
2466 | hostio_handle_new_gdb_connection (); | |
de0d863e DB |
2467 | target_handle_new_gdb_connection (); |
2468 | ||
be2a5f71 DJ |
2469 | return; |
2470 | } | |
2471 | ||
dae5f5cf | 2472 | /* Thread-local storage support. */ |
52405d85 | 2473 | if (the_target->supports_get_tls_address () |
61012eef | 2474 | && startswith (own_buf, "qGetTLSAddr:")) |
dae5f5cf DJ |
2475 | { |
2476 | char *p = own_buf + 12; | |
5b1c542e | 2477 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 2478 | int i, err; |
95954743 | 2479 | ptid_t ptid = null_ptid; |
dae5f5cf | 2480 | |
f8a4e119 | 2481 | require_running_or_return (own_buf); |
2d717e4f | 2482 | |
dae5f5cf DJ |
2483 | for (i = 0; i < 3; i++) |
2484 | { | |
2485 | char *p2; | |
2486 | int len; | |
2487 | ||
2488 | if (p == NULL) | |
2489 | break; | |
2490 | ||
2491 | p2 = strchr (p, ','); | |
2492 | if (p2) | |
2493 | { | |
2494 | len = p2 - p; | |
2495 | p2++; | |
2496 | } | |
2497 | else | |
2498 | { | |
2499 | len = strlen (p); | |
2500 | p2 = NULL; | |
2501 | } | |
2502 | ||
5b1c542e | 2503 | if (i == 0) |
95954743 | 2504 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
2505 | else |
2506 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
2507 | p = p2; |
2508 | } | |
2509 | ||
2510 | if (p != NULL || i < 3) | |
2511 | err = 1; | |
2512 | else | |
2513 | { | |
e09875d4 | 2514 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
2515 | |
2516 | if (thread == NULL) | |
2517 | err = 2; | |
2518 | else | |
52405d85 TBA |
2519 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
2520 | &address); | |
dae5f5cf DJ |
2521 | } |
2522 | ||
2523 | if (err == 0) | |
2524 | { | |
c6f46ca0 | 2525 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
2526 | return; |
2527 | } | |
2528 | else if (err > 0) | |
2529 | { | |
2530 | write_enn (own_buf); | |
2531 | return; | |
2532 | } | |
2533 | ||
2534 | /* Otherwise, pretend we do not understand this packet. */ | |
2535 | } | |
2536 | ||
711e434b | 2537 | /* Windows OS Thread Information Block address support. */ |
52405d85 | 2538 | if (the_target->supports_get_tib_address () |
61012eef | 2539 | && startswith (own_buf, "qGetTIBAddr:")) |
711e434b | 2540 | { |
256642e8 | 2541 | const char *annex; |
711e434b PM |
2542 | int n; |
2543 | CORE_ADDR tlb; | |
2544 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2545 | ||
52405d85 | 2546 | n = the_target->get_tib_address (ptid, &tlb); |
711e434b PM |
2547 | if (n == 1) |
2548 | { | |
c6f46ca0 | 2549 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2550 | return; |
2551 | } | |
2552 | else if (n == 0) | |
2553 | { | |
2554 | write_enn (own_buf); | |
2555 | return; | |
2556 | } | |
2557 | return; | |
2558 | } | |
2559 | ||
c74d0ad8 | 2560 | /* Handle "monitor" commands. */ |
61012eef | 2561 | if (startswith (own_buf, "qRcmd,")) |
c74d0ad8 | 2562 | { |
224c3ddb | 2563 | char *mon = (char *) malloc (PBUFSIZ); |
c74d0ad8 DJ |
2564 | int len = strlen (own_buf + 6); |
2565 | ||
aef93bd7 DE |
2566 | if (mon == NULL) |
2567 | { | |
2568 | write_enn (own_buf); | |
2569 | return; | |
2570 | } | |
2571 | ||
ff0e980e TT |
2572 | if ((len % 2) != 0 |
2573 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2574 | { |
2575 | write_enn (own_buf); | |
2576 | free (mon); | |
2577 | return; | |
2578 | } | |
2579 | mon[len / 2] = '\0'; | |
2580 | ||
2581 | write_ok (own_buf); | |
2582 | ||
52405d85 | 2583 | if (the_target->handle_monitor_command (mon) == 0) |
cdbfd419 | 2584 | /* Default processing. */ |
d73f2619 | 2585 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2586 | |
2587 | free (mon); | |
2588 | return; | |
2589 | } | |
2590 | ||
61012eef | 2591 | if (startswith (own_buf, "qSearch:memory:")) |
08388c79 | 2592 | { |
f8a4e119 | 2593 | require_running_or_return (own_buf); |
08388c79 DE |
2594 | handle_search_memory (own_buf, packet_len); |
2595 | return; | |
2596 | } | |
2597 | ||
95954743 | 2598 | if (strcmp (own_buf, "qAttached") == 0 |
61012eef | 2599 | || startswith (own_buf, "qAttached:")) |
0b16c5cf | 2600 | { |
95954743 PA |
2601 | struct process_info *process; |
2602 | ||
2603 | if (own_buf[sizeof ("qAttached") - 1]) | |
2604 | { | |
2605 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
9179355e | 2606 | process = find_process_pid (pid); |
95954743 PA |
2607 | } |
2608 | else | |
2609 | { | |
f8a4e119 | 2610 | require_running_or_return (own_buf); |
95954743 PA |
2611 | process = current_process (); |
2612 | } | |
2613 | ||
2614 | if (process == NULL) | |
2615 | { | |
2616 | write_enn (own_buf); | |
2617 | return; | |
2618 | } | |
2619 | ||
2620 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2621 | return; |
2622 | } | |
2623 | ||
61012eef | 2624 | if (startswith (own_buf, "qCRC:")) |
30ba68cb MS |
2625 | { |
2626 | /* CRC check (compare-section). */ | |
256642e8 | 2627 | const char *comma; |
aca22551 | 2628 | ULONGEST base; |
30ba68cb MS |
2629 | int len; |
2630 | unsigned long long crc; | |
2631 | ||
f8a4e119 | 2632 | require_running_or_return (own_buf); |
aca22551 | 2633 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2634 | if (*comma++ != ',') |
2635 | { | |
2636 | write_enn (own_buf); | |
2637 | return; | |
2638 | } | |
2639 | len = strtoul (comma, NULL, 16); | |
2640 | crc = crc32 (base, len, 0xffffffff); | |
2641 | /* Check for memory failure. */ | |
2642 | if (crc == (unsigned long long) -1) | |
2643 | { | |
2644 | write_enn (own_buf); | |
2645 | return; | |
2646 | } | |
2647 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2648 | return; | |
2649 | } | |
2650 | ||
d08aafef PA |
2651 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2652 | return; | |
2653 | ||
219f2f23 PA |
2654 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2655 | return; | |
2656 | ||
ce3a066d DJ |
2657 | /* Otherwise we didn't know what packet it was. Say we didn't |
2658 | understand it. */ | |
2659 | own_buf[0] = 0; | |
2660 | } | |
2661 | ||
ce1a5b52 | 2662 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2663 | static void resume (struct thread_resume *actions, size_t n); |
2664 | ||
649ebbca DE |
2665 | /* The callback that is passed to visit_actioned_threads. */ |
2666 | typedef int (visit_actioned_threads_callback_ftype) | |
2667 | (const struct thread_resume *, struct thread_info *); | |
2668 | ||
b7ea362b PA |
2669 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2670 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca | 2671 | is found or CALLBACK results false. |
eaddb425 | 2672 | Note: This function is itself a callback for find_thread. */ |
b7ea362b | 2673 | |
eaddb425 SM |
2674 | static bool |
2675 | visit_actioned_threads (thread_info *thread, | |
2676 | const struct thread_resume *actions, | |
2677 | size_t num_actions, | |
2678 | visit_actioned_threads_callback_ftype *callback) | |
b7ea362b | 2679 | { |
eaddb425 | 2680 | for (size_t i = 0; i < num_actions; i++) |
b7ea362b | 2681 | { |
649ebbca | 2682 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2683 | |
d7e15655 TT |
2684 | if (action->thread == minus_one_ptid |
2685 | || action->thread == thread->id | |
e99b03dc | 2686 | || ((action->thread.pid () |
9c80ecd6 | 2687 | == thread->id.pid ()) |
e38504b3 | 2688 | && action->thread.lwp () == -1)) |
b7ea362b | 2689 | { |
649ebbca | 2690 | if ((*callback) (action, thread)) |
eaddb425 | 2691 | return true; |
b7ea362b PA |
2692 | } |
2693 | } | |
2694 | ||
eaddb425 | 2695 | return false; |
b7ea362b PA |
2696 | } |
2697 | ||
2698 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2699 | status to report, report it now. */ | |
2700 | ||
2701 | static int | |
2702 | handle_pending_status (const struct thread_resume *resumption, | |
2703 | struct thread_info *thread) | |
2704 | { | |
c12a5089 | 2705 | client_state &cs = get_client_state (); |
b7ea362b PA |
2706 | if (thread->status_pending_p) |
2707 | { | |
2708 | thread->status_pending_p = 0; | |
2709 | ||
c12a5089 SC |
2710 | cs.last_status = thread->last_status; |
2711 | cs.last_ptid = thread->id; | |
2712 | prepare_resume_reply (cs.own_buf, cs.last_ptid, &cs.last_status); | |
b7ea362b PA |
2713 | return 1; |
2714 | } | |
2715 | return 0; | |
2716 | } | |
ce1a5b52 | 2717 | |
64386c31 | 2718 | /* Parse vCont packets. */ |
5b3da067 | 2719 | static void |
5b1c542e | 2720 | handle_v_cont (char *own_buf) |
64386c31 | 2721 | { |
256642e8 | 2722 | const char *p; |
64386c31 | 2723 | int n = 0, i = 0; |
2bd7c093 | 2724 | struct thread_resume *resume_info; |
436252de | 2725 | struct thread_resume default_action { null_ptid }; |
64386c31 DJ |
2726 | |
2727 | /* Count the number of semicolons in the packet. There should be one | |
2728 | for every action. */ | |
2729 | p = &own_buf[5]; | |
2730 | while (p) | |
2731 | { | |
2732 | n++; | |
2733 | p++; | |
2734 | p = strchr (p, ';'); | |
2735 | } | |
2bd7c093 | 2736 | |
224c3ddb | 2737 | resume_info = (struct thread_resume *) malloc (n * sizeof (resume_info[0])); |
aef93bd7 DE |
2738 | if (resume_info == NULL) |
2739 | goto err; | |
64386c31 | 2740 | |
64386c31 | 2741 | p = &own_buf[5]; |
64386c31 DJ |
2742 | while (*p) |
2743 | { | |
2744 | p++; | |
2745 | ||
c2d6af84 PA |
2746 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2747 | ||
64386c31 | 2748 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2749 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2750 | else if (p[0] == 'r') |
2751 | resume_info[i].kind = resume_step; | |
64386c31 | 2752 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2753 | resume_info[i].kind = resume_continue; |
2754 | else if (p[0] == 't') | |
2755 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2756 | else |
2757 | goto err; | |
2758 | ||
2759 | if (p[0] == 'S' || p[0] == 'C') | |
2760 | { | |
256642e8 PA |
2761 | char *q; |
2762 | int sig = strtol (p + 1, &q, 16); | |
64386c31 DJ |
2763 | if (p == q) |
2764 | goto err; | |
2765 | p = q; | |
2766 | ||
e053fbc4 | 2767 | if (!gdb_signal_to_host_p ((enum gdb_signal) sig)) |
64386c31 | 2768 | goto err; |
e053fbc4 | 2769 | resume_info[i].sig = gdb_signal_to_host ((enum gdb_signal) sig); |
64386c31 | 2770 | } |
c2d6af84 PA |
2771 | else if (p[0] == 'r') |
2772 | { | |
6740dc9c | 2773 | ULONGEST addr; |
c2d6af84 | 2774 | |
6740dc9c PA |
2775 | p = unpack_varlen_hex (p + 1, &addr); |
2776 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2777 | |
6740dc9c PA |
2778 | if (*p != ',') |
2779 | goto err; | |
c2d6af84 | 2780 | |
6740dc9c PA |
2781 | p = unpack_varlen_hex (p + 1, &addr); |
2782 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2783 | } |
64386c31 DJ |
2784 | else |
2785 | { | |
64386c31 DJ |
2786 | p = p + 1; |
2787 | } | |
2788 | ||
2789 | if (p[0] == 0) | |
2790 | { | |
95954743 | 2791 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2792 | default_action = resume_info[i]; |
2793 | ||
2794 | /* Note: we don't increment i here, we'll overwrite this entry | |
2795 | the next time through. */ | |
2796 | } | |
2797 | else if (p[0] == ':') | |
2798 | { | |
256642e8 | 2799 | const char *q; |
95954743 | 2800 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2801 | |
64386c31 DJ |
2802 | if (p == q) |
2803 | goto err; | |
2804 | p = q; | |
2805 | if (p[0] != ';' && p[0] != 0) | |
2806 | goto err; | |
2807 | ||
95954743 | 2808 | resume_info[i].thread = ptid; |
a06660f7 | 2809 | |
64386c31 DJ |
2810 | i++; |
2811 | } | |
2812 | } | |
2813 | ||
2bd7c093 PA |
2814 | if (i < n) |
2815 | resume_info[i] = default_action; | |
64386c31 | 2816 | |
b7ea362b PA |
2817 | resume (resume_info, n); |
2818 | free (resume_info); | |
2819 | return; | |
2820 | ||
2821 | err: | |
2822 | write_enn (own_buf); | |
2823 | free (resume_info); | |
2824 | return; | |
2825 | } | |
2826 | ||
2827 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2828 | ||
2829 | static void | |
2830 | resume (struct thread_resume *actions, size_t num_actions) | |
2831 | { | |
c12a5089 | 2832 | client_state &cs = get_client_state (); |
bd99dc85 | 2833 | if (!non_stop) |
b7ea362b PA |
2834 | { |
2835 | /* Check if among the threads that GDB wants actioned, there's | |
2836 | one with a pending status to report. If so, skip actually | |
2837 | resuming/stopping and report the pending event | |
2838 | immediately. */ | |
649ebbca | 2839 | |
eaddb425 SM |
2840 | thread_info *thread_with_status = find_thread ([&] (thread_info *thread) |
2841 | { | |
2842 | return visit_actioned_threads (thread, actions, num_actions, | |
2843 | handle_pending_status); | |
2844 | }); | |
2845 | ||
2846 | if (thread_with_status != NULL) | |
b7ea362b | 2847 | return; |
bd99dc85 | 2848 | |
b7ea362b PA |
2849 | enable_async_io (); |
2850 | } | |
64386c31 | 2851 | |
52405d85 | 2852 | the_target->resume (actions, num_actions); |
64386c31 | 2853 | |
bd99dc85 | 2854 | if (non_stop) |
c12a5089 | 2855 | write_ok (cs.own_buf); |
bd99dc85 PA |
2856 | else |
2857 | { | |
c12a5089 | 2858 | cs.last_ptid = mywait (minus_one_ptid, &cs.last_status, 0, 1); |
ce1a5b52 | 2859 | |
c12a5089 | 2860 | if (cs.last_status.kind == TARGET_WAITKIND_NO_RESUMED |
f2faf941 | 2861 | && !report_no_resumed) |
fa96cb38 | 2862 | { |
f2faf941 PA |
2863 | /* The client does not support this stop reply. At least |
2864 | return error. */ | |
c12a5089 | 2865 | sprintf (cs.own_buf, "E.No unwaited-for children left."); |
fa96cb38 PA |
2866 | disable_async_io (); |
2867 | return; | |
2868 | } | |
2869 | ||
c12a5089 SC |
2870 | if (cs.last_status.kind != TARGET_WAITKIND_EXITED |
2871 | && cs.last_status.kind != TARGET_WAITKIND_SIGNALLED | |
2872 | && cs.last_status.kind != TARGET_WAITKIND_NO_RESUMED) | |
2873 | current_thread->last_status = cs.last_status; | |
d20a8ad9 | 2874 | |
ce1a5b52 PA |
2875 | /* From the client's perspective, all-stop mode always stops all |
2876 | threads implicitly (and the target backend has already done | |
2877 | so by now). Tag all threads as "want-stopped", so we don't | |
2878 | resume them implicitly without the client telling us to. */ | |
2879 | gdb_wants_all_threads_stopped (); | |
c12a5089 | 2880 | prepare_resume_reply (cs.own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 | 2881 | disable_async_io (); |
6bd31874 | 2882 | |
c12a5089 SC |
2883 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
2884 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2885 | target_mourn_inferior (cs.last_ptid); | |
bd99dc85 | 2886 | } |
64386c31 DJ |
2887 | } |
2888 | ||
2d717e4f | 2889 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
5b3da067 | 2890 | static int |
5b1c542e | 2891 | handle_v_attach (char *own_buf) |
2d717e4f | 2892 | { |
c12a5089 | 2893 | client_state &cs = get_client_state (); |
2d717e4f DJ |
2894 | int pid; |
2895 | ||
2896 | pid = strtol (own_buf + 8, NULL, 16); | |
50fa3001 | 2897 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2898 | { |
aeba519e PA |
2899 | /* Don't report shared library events after attaching, even if |
2900 | some libraries are preloaded. GDB will always poll the | |
2901 | library list. Avoids the "stopped by shared library event" | |
2902 | notice on the GDB side. */ | |
2903 | dlls_changed = 0; | |
bd99dc85 PA |
2904 | |
2905 | if (non_stop) | |
2906 | { | |
2907 | /* In non-stop, we don't send a resume reply. Stop events | |
2908 | will follow up using the normal notification | |
2909 | mechanism. */ | |
2910 | write_ok (own_buf); | |
2911 | } | |
2912 | else | |
c12a5089 | 2913 | prepare_resume_reply (own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 | 2914 | |
2d717e4f DJ |
2915 | return 1; |
2916 | } | |
2917 | else | |
2918 | { | |
2919 | write_enn (own_buf); | |
2920 | return 0; | |
2921 | } | |
2922 | } | |
2923 | ||
2924 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2925 | static int | |
5b1c542e | 2926 | handle_v_run (char *own_buf) |
2d717e4f | 2927 | { |
c12a5089 | 2928 | client_state &cs = get_client_state (); |
7c5ded6a SDJ |
2929 | char *p, *next_p; |
2930 | std::vector<char *> new_argv; | |
2090129c | 2931 | char *new_program_name = NULL; |
2d717e4f DJ |
2932 | int i, new_argc; |
2933 | ||
2934 | new_argc = 0; | |
2935 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2936 | { | |
2937 | p++; | |
2938 | new_argc++; | |
2939 | } | |
2940 | ||
7c5ded6a | 2941 | for (i = 0, p = own_buf + strlen ("vRun;"); *p; p = next_p, ++i) |
2d717e4f DJ |
2942 | { |
2943 | next_p = strchr (p, ';'); | |
2944 | if (next_p == NULL) | |
2945 | next_p = p + strlen (p); | |
2946 | ||
2947 | if (i == 0 && p == next_p) | |
7c5ded6a SDJ |
2948 | { |
2949 | /* No program specified. */ | |
2090129c SDJ |
2950 | new_program_name = NULL; |
2951 | } | |
2952 | else if (p == next_p) | |
2953 | { | |
2954 | /* Empty argument. */ | |
2955 | new_argv.push_back (xstrdup ("''")); | |
7c5ded6a | 2956 | } |
2d717e4f DJ |
2957 | else |
2958 | { | |
7c5ded6a | 2959 | size_t len = (next_p - p) / 2; |
2090129c | 2960 | /* ARG is the unquoted argument received via the RSP. */ |
7c5ded6a | 2961 | char *arg = (char *) xmalloc (len + 1); |
2090129c SDJ |
2962 | /* FULL_ARGS will contain the quoted version of ARG. */ |
2963 | char *full_arg = (char *) xmalloc ((len + 1) * 2); | |
2964 | /* These are pointers used to navigate the strings above. */ | |
2965 | char *tmp_arg = arg; | |
2966 | char *tmp_full_arg = full_arg; | |
2967 | int need_quote = 0; | |
7c5ded6a SDJ |
2968 | |
2969 | hex2bin (p, (gdb_byte *) arg, len); | |
2970 | arg[len] = '\0'; | |
2d717e4f | 2971 | |
2090129c SDJ |
2972 | while (*tmp_arg != '\0') |
2973 | { | |
2974 | switch (*tmp_arg) | |
2975 | { | |
2976 | case '\n': | |
2977 | /* Quote \n. */ | |
2978 | *tmp_full_arg = '\''; | |
2979 | ++tmp_full_arg; | |
2980 | need_quote = 1; | |
2981 | break; | |
2982 | ||
2983 | case '\'': | |
2984 | /* Quote single quote. */ | |
2985 | *tmp_full_arg = '\\'; | |
2986 | ++tmp_full_arg; | |
2987 | break; | |
2988 | ||
2989 | default: | |
2990 | break; | |
2991 | } | |
2992 | ||
2993 | *tmp_full_arg = *tmp_arg; | |
2994 | ++tmp_full_arg; | |
2995 | ++tmp_arg; | |
2996 | } | |
2997 | ||
2998 | if (need_quote) | |
2999 | *tmp_full_arg++ = '\''; | |
3000 | ||
3001 | /* Finish FULL_ARG and push it into the vector containing | |
3002 | the argv. */ | |
3003 | *tmp_full_arg = '\0'; | |
3004 | if (i == 0) | |
3005 | new_program_name = full_arg; | |
3006 | else | |
3007 | new_argv.push_back (full_arg); | |
3008 | xfree (arg); | |
3009 | } | |
2d717e4f DJ |
3010 | if (*next_p) |
3011 | next_p++; | |
2d717e4f | 3012 | } |
7c5ded6a | 3013 | new_argv.push_back (NULL); |
2d717e4f | 3014 | |
2090129c | 3015 | if (new_program_name == NULL) |
2d717e4f | 3016 | { |
f142445f DJ |
3017 | /* GDB didn't specify a program to run. Use the program from the |
3018 | last run with the new argument list. */ | |
25e3c82c | 3019 | if (program_path.get () == NULL) |
2d717e4f DJ |
3020 | { |
3021 | write_enn (own_buf); | |
7c5ded6a | 3022 | free_vector_argv (new_argv); |
2d717e4f DJ |
3023 | return 0; |
3024 | } | |
2090129c SDJ |
3025 | } |
3026 | else | |
25e3c82c | 3027 | program_path.set (gdb::unique_xmalloc_ptr<char> (new_program_name)); |
f142445f | 3028 | |
aef93bd7 | 3029 | /* Free the old argv and install the new one. */ |
2090129c SDJ |
3030 | free_vector_argv (program_args); |
3031 | program_args = new_argv; | |
3032 | ||
15295543 | 3033 | target_create_inferior (program_path.get (), program_args); |
2d717e4f | 3034 | |
c12a5089 | 3035 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
2d717e4f | 3036 | { |
c12a5089 | 3037 | prepare_resume_reply (own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 PA |
3038 | |
3039 | /* In non-stop, sending a resume reply doesn't set the general | |
3040 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
3041 | query which is the main thread of the new inferior. */ | |
3042 | if (non_stop) | |
c12a5089 | 3043 | cs.general_thread = cs.last_ptid; |
bd99dc85 | 3044 | |
2d717e4f DJ |
3045 | return 1; |
3046 | } | |
3047 | else | |
3048 | { | |
3049 | write_enn (own_buf); | |
3050 | return 0; | |
3051 | } | |
3052 | } | |
3053 | ||
95954743 | 3054 | /* Kill process. Return 1 if successful, 0 if failure. */ |
5b3da067 | 3055 | static int |
95954743 PA |
3056 | handle_v_kill (char *own_buf) |
3057 | { | |
c12a5089 | 3058 | client_state &cs = get_client_state (); |
95954743 PA |
3059 | int pid; |
3060 | char *p = &own_buf[6]; | |
c12a5089 | 3061 | if (cs.multi_process) |
0f54c268 PM |
3062 | pid = strtol (p, NULL, 16); |
3063 | else | |
3064 | pid = signal_pid; | |
a780ef4f PA |
3065 | |
3066 | process_info *proc = find_process_pid (pid); | |
3067 | ||
3068 | if (proc != nullptr && kill_inferior (proc) == 0) | |
95954743 | 3069 | { |
c12a5089 SC |
3070 | cs.last_status.kind = TARGET_WAITKIND_SIGNALLED; |
3071 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
f2907e49 | 3072 | cs.last_ptid = ptid_t (pid); |
c12a5089 | 3073 | discard_queued_stop_replies (cs.last_ptid); |
95954743 PA |
3074 | write_ok (own_buf); |
3075 | return 1; | |
3076 | } | |
3077 | else | |
3078 | { | |
3079 | write_enn (own_buf); | |
3080 | return 0; | |
3081 | } | |
3082 | } | |
3083 | ||
64386c31 | 3084 | /* Handle all of the extended 'v' packets. */ |
28170b88 | 3085 | void |
5b1c542e | 3086 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 3087 | { |
c12a5089 | 3088 | client_state &cs = get_client_state (); |
db42f210 | 3089 | if (!disable_packet_vCont) |
64386c31 | 3090 | { |
de979965 PA |
3091 | if (strcmp (own_buf, "vCtrlC") == 0) |
3092 | { | |
52405d85 | 3093 | the_target->request_interrupt (); |
de979965 PA |
3094 | write_ok (own_buf); |
3095 | return; | |
3096 | } | |
3097 | ||
61012eef | 3098 | if (startswith (own_buf, "vCont;")) |
db42f210 | 3099 | { |
5b1c542e | 3100 | handle_v_cont (own_buf); |
db42f210 PA |
3101 | return; |
3102 | } | |
64386c31 | 3103 | |
61012eef | 3104 | if (startswith (own_buf, "vCont?")) |
db42f210 | 3105 | { |
750ce8d1 YQ |
3106 | strcpy (own_buf, "vCont;c;C;t"); |
3107 | ||
21536b36 YQ |
3108 | if (target_supports_hardware_single_step () |
3109 | || target_supports_software_single_step () | |
c12a5089 | 3110 | || !cs.vCont_supported) |
750ce8d1 | 3111 | { |
21536b36 YQ |
3112 | /* If target supports single step either by hardware or by |
3113 | software, add actions s and S to the list of supported | |
3114 | actions. On the other hand, if GDB doesn't request the | |
3115 | supported vCont actions in qSupported packet, add s and | |
3116 | S to the list too. */ | |
750ce8d1 YQ |
3117 | own_buf = own_buf + strlen (own_buf); |
3118 | strcpy (own_buf, ";s;S"); | |
3119 | } | |
3120 | ||
c2d6af84 PA |
3121 | if (target_supports_range_stepping ()) |
3122 | { | |
3123 | own_buf = own_buf + strlen (own_buf); | |
3124 | strcpy (own_buf, ";r"); | |
3125 | } | |
db42f210 PA |
3126 | return; |
3127 | } | |
64386c31 DJ |
3128 | } |
3129 | ||
61012eef | 3130 | if (startswith (own_buf, "vFile:") |
a6b151f1 DJ |
3131 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
3132 | return; | |
3133 | ||
61012eef | 3134 | if (startswith (own_buf, "vAttach;")) |
2d717e4f | 3135 | { |
c12a5089 | 3136 | if ((!extended_protocol || !cs.multi_process) && target_running ()) |
2d717e4f | 3137 | { |
fd96d250 PA |
3138 | fprintf (stderr, "Already debugging a process\n"); |
3139 | write_enn (own_buf); | |
3140 | return; | |
2d717e4f | 3141 | } |
5b1c542e | 3142 | handle_v_attach (own_buf); |
2d717e4f DJ |
3143 | return; |
3144 | } | |
3145 | ||
61012eef | 3146 | if (startswith (own_buf, "vRun;")) |
2d717e4f | 3147 | { |
c12a5089 | 3148 | if ((!extended_protocol || !cs.multi_process) && target_running ()) |
2d717e4f | 3149 | { |
fd96d250 PA |
3150 | fprintf (stderr, "Already debugging a process\n"); |
3151 | write_enn (own_buf); | |
3152 | return; | |
2d717e4f | 3153 | } |
5b1c542e | 3154 | handle_v_run (own_buf); |
2d717e4f DJ |
3155 | return; |
3156 | } | |
3157 | ||
61012eef | 3158 | if (startswith (own_buf, "vKill;")) |
95954743 PA |
3159 | { |
3160 | if (!target_running ()) | |
3161 | { | |
3162 | fprintf (stderr, "No process to kill\n"); | |
3163 | write_enn (own_buf); | |
3164 | return; | |
3165 | } | |
3166 | handle_v_kill (own_buf); | |
3167 | return; | |
3168 | } | |
3169 | ||
14a00470 YQ |
3170 | if (handle_notif_ack (own_buf, packet_len)) |
3171 | return; | |
bd99dc85 | 3172 | |
64386c31 DJ |
3173 | /* Otherwise we didn't know what packet it was. Say we didn't |
3174 | understand it. */ | |
3175 | own_buf[0] = 0; | |
3176 | return; | |
3177 | } | |
3178 | ||
0bfdf32f | 3179 | /* Resume thread and wait for another event. In non-stop mode, |
bd99dc85 PA |
3180 | don't really wait here, but return immediatelly to the event |
3181 | loop. */ | |
1fd7cdc2 | 3182 | static void |
5b1c542e | 3183 | myresume (char *own_buf, int step, int sig) |
64386c31 | 3184 | { |
c12a5089 | 3185 | client_state &cs = get_client_state (); |
64386c31 DJ |
3186 | struct thread_resume resume_info[2]; |
3187 | int n = 0; | |
2bd7c093 | 3188 | int valid_cont_thread; |
a20d5e98 | 3189 | |
d7e15655 TT |
3190 | valid_cont_thread = (cs.cont_thread != null_ptid |
3191 | && cs.cont_thread != minus_one_ptid); | |
2bd7c093 PA |
3192 | |
3193 | if (step || sig || valid_cont_thread) | |
64386c31 | 3194 | { |
fbd5db48 | 3195 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
3196 | if (step) |
3197 | resume_info[0].kind = resume_step; | |
3198 | else | |
3199 | resume_info[0].kind = resume_continue; | |
64386c31 | 3200 | resume_info[0].sig = sig; |
64386c31 DJ |
3201 | n++; |
3202 | } | |
2bd7c093 PA |
3203 | |
3204 | if (!valid_cont_thread) | |
3205 | { | |
95954743 | 3206 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 3207 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
3208 | resume_info[n].sig = 0; |
3209 | n++; | |
3210 | } | |
64386c31 | 3211 | |
b7ea362b | 3212 | resume (resume_info, n); |
bd99dc85 PA |
3213 | } |
3214 | ||
f0045347 | 3215 | /* Callback for for_each_thread. Make a new stop reply for each |
bd99dc85 PA |
3216 | stopped thread. */ |
3217 | ||
99078d34 SM |
3218 | static void |
3219 | queue_stop_reply_callback (thread_info *thread) | |
bd99dc85 | 3220 | { |
8336d594 PA |
3221 | /* For now, assume targets that don't have this callback also don't |
3222 | manage the thread's last_status field. */ | |
52405d85 | 3223 | if (!the_target->supports_thread_stopped ()) |
95954743 | 3224 | { |
b494cdff | 3225 | struct vstop_notif *new_notif = new struct vstop_notif; |
14a00470 | 3226 | |
9c80ecd6 | 3227 | new_notif->ptid = thread->id; |
14a00470 | 3228 | new_notif->status = thread->last_status; |
8336d594 PA |
3229 | /* Pass the last stop reply back to GDB, but don't notify |
3230 | yet. */ | |
b494cdff | 3231 | notif_event_enque (¬if_stop, new_notif); |
8336d594 PA |
3232 | } |
3233 | else | |
3234 | { | |
68119632 | 3235 | if (target_thread_stopped (thread)) |
8336d594 PA |
3236 | { |
3237 | if (debug_threads) | |
3360c0bf | 3238 | { |
23fdd69e | 3239 | std::string status_string |
3360c0bf LM |
3240 | = target_waitstatus_to_string (&thread->last_status); |
3241 | ||
87ce2a04 | 3242 | debug_printf ("Reporting thread %s as already stopped with %s\n", |
9c80ecd6 | 3243 | target_pid_to_str (thread->id), |
23fdd69e | 3244 | status_string.c_str ()); |
3360c0bf | 3245 | } |
8336d594 | 3246 | |
d20a8ad9 PA |
3247 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
3248 | ||
8336d594 PA |
3249 | /* Pass the last stop reply back to GDB, but don't notify |
3250 | yet. */ | |
9c80ecd6 | 3251 | queue_stop_reply (thread->id, &thread->last_status); |
8336d594 | 3252 | } |
95954743 | 3253 | } |
64386c31 DJ |
3254 | } |
3255 | ||
ce1a5b52 PA |
3256 | /* Set this inferior threads's state as "want-stopped". We won't |
3257 | resume this thread until the client gives us another action for | |
3258 | it. */ | |
8336d594 PA |
3259 | |
3260 | static void | |
9c80ecd6 | 3261 | gdb_wants_thread_stopped (thread_info *thread) |
8336d594 | 3262 | { |
8336d594 PA |
3263 | thread->last_resume_kind = resume_stop; |
3264 | ||
3265 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
3266 | { | |
ce1a5b52 PA |
3267 | /* Most threads are stopped implicitly (all-stop); tag that with |
3268 | signal 0. */ | |
8336d594 | 3269 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 3270 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
3271 | } |
3272 | } | |
3273 | ||
3274 | /* Set all threads' states as "want-stopped". */ | |
3275 | ||
3276 | static void | |
3277 | gdb_wants_all_threads_stopped (void) | |
3278 | { | |
f0045347 | 3279 | for_each_thread (gdb_wants_thread_stopped); |
8336d594 PA |
3280 | } |
3281 | ||
f0045347 | 3282 | /* Callback for for_each_thread. If the thread is stopped with an |
b7ea362b PA |
3283 | interesting event, mark it as having a pending event. */ |
3284 | ||
3285 | static void | |
9c80ecd6 | 3286 | set_pending_status_callback (thread_info *thread) |
b7ea362b | 3287 | { |
b7ea362b PA |
3288 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED |
3289 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
3290 | /* A breakpoint, watchpoint or finished step from a previous | |
3291 | GDB run isn't considered interesting for a new GDB run. | |
3292 | If we left those pending, the new GDB could consider them | |
3293 | random SIGTRAPs. This leaves out real async traps. We'd | |
3294 | have to peek into the (target-specific) siginfo to | |
3295 | distinguish those. */ | |
3296 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
3297 | thread->status_pending_p = 1; | |
3298 | } | |
3299 | ||
5b1c542e PA |
3300 | /* Status handler for the '?' packet. */ |
3301 | ||
3302 | static void | |
3303 | handle_status (char *own_buf) | |
3304 | { | |
c12a5089 SC |
3305 | client_state &cs = get_client_state (); |
3306 | ||
8336d594 | 3307 | /* GDB is connected, don't forward events to the target anymore. */ |
9179355e SM |
3308 | for_each_process ([] (process_info *process) { |
3309 | process->gdb_detached = 0; | |
3310 | }); | |
bd99dc85 PA |
3311 | |
3312 | /* In non-stop mode, we must send a stop reply for each stopped | |
3313 | thread. In all-stop mode, just send one for the first stopped | |
3314 | thread we find. */ | |
3315 | ||
3316 | if (non_stop) | |
3317 | { | |
99078d34 | 3318 | for_each_thread (queue_stop_reply_callback); |
bd99dc85 PA |
3319 | |
3320 | /* The first is sent immediatly. OK is sent if there is no | |
3321 | stopped thread, which is the same handling of the vStopped | |
3322 | packet (by design). */ | |
c12a5089 | 3323 | notif_write_event (¬if_stop, cs.own_buf); |
bd99dc85 | 3324 | } |
5b1c542e | 3325 | else |
bd99dc85 | 3326 | { |
9c80ecd6 | 3327 | thread_info *thread = NULL; |
b7ea362b | 3328 | |
29e8dc09 | 3329 | target_pause_all (false); |
5c9eb2f2 | 3330 | target_stabilize_threads (); |
8336d594 PA |
3331 | gdb_wants_all_threads_stopped (); |
3332 | ||
b7ea362b PA |
3333 | /* We can only report one status, but we might be coming out of |
3334 | non-stop -- if more than one thread is stopped with | |
3335 | interesting events, leave events for the threads we're not | |
3336 | reporting now pending. They'll be reported the next time the | |
3337 | threads are resumed. Start by marking all interesting events | |
3338 | as pending. */ | |
f0045347 | 3339 | for_each_thread (set_pending_status_callback); |
b7ea362b PA |
3340 | |
3341 | /* Prefer the last thread that reported an event to GDB (even if | |
3342 | that was a GDB_SIGNAL_TRAP). */ | |
c12a5089 SC |
3343 | if (cs.last_status.kind != TARGET_WAITKIND_IGNORE |
3344 | && cs.last_status.kind != TARGET_WAITKIND_EXITED | |
3345 | && cs.last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
3346 | thread = find_thread_ptid (cs.last_ptid); | |
b7ea362b PA |
3347 | |
3348 | /* If the last event thread is not found for some reason, look | |
3349 | for some other thread that might have an event to report. */ | |
3350 | if (thread == NULL) | |
da4ae14a | 3351 | thread = find_thread ([] (thread_info *thr_arg) |
99078d34 | 3352 | { |
da4ae14a | 3353 | return thr_arg->status_pending_p; |
99078d34 | 3354 | }); |
b7ea362b PA |
3355 | |
3356 | /* If we're still out of luck, simply pick the first thread in | |
3357 | the thread list. */ | |
3358 | if (thread == NULL) | |
9c80ecd6 | 3359 | thread = get_first_thread (); |
b7ea362b PA |
3360 | |
3361 | if (thread != NULL) | |
8336d594 | 3362 | { |
b7ea362b PA |
3363 | struct thread_info *tp = (struct thread_info *) thread; |
3364 | ||
3365 | /* We're reporting this event, so it's no longer | |
3366 | pending. */ | |
3367 | tp->status_pending_p = 0; | |
3368 | ||
3369 | /* GDB assumes the current thread is the thread we're | |
3370 | reporting the status for. */ | |
c12a5089 | 3371 | cs.general_thread = thread->id; |
f557a88a | 3372 | set_desired_thread (); |
8336d594 | 3373 | |
b7ea362b | 3374 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
9c80ecd6 | 3375 | prepare_resume_reply (own_buf, tp->id, &tp->last_status); |
8336d594 | 3376 | } |
bd99dc85 PA |
3377 | else |
3378 | strcpy (own_buf, "W00"); | |
3379 | } | |
5b1c542e PA |
3380 | } |
3381 | ||
dd24457d DJ |
3382 | static void |
3383 | gdbserver_version (void) | |
3384 | { | |
c16158bc | 3385 | printf ("GNU gdbserver %s%s\n" |
5dd8bf88 | 3386 | "Copyright (C) 2020 Free Software Foundation, Inc.\n" |
493e2a69 MS |
3387 | "gdbserver is free software, covered by the " |
3388 | "GNU General Public License.\n" | |
dd24457d | 3389 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 3390 | PKGVERSION, version, host_name); |
dd24457d DJ |
3391 | } |
3392 | ||
0bc68c49 | 3393 | static void |
c16158bc | 3394 | gdbserver_usage (FILE *stream) |
0bc68c49 | 3395 | { |
c16158bc JM |
3396 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
3397 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
3398 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
3399 | "\n" | |
41f98f02 PA |
3400 | "COMM may either be a tty device (for serial debugging),\n" |
3401 | "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n" | |
3402 | "stdin/stdout of gdbserver.\n" | |
3403 | "PROG is the executable program. ARGS are arguments passed to inferior.\n" | |
3404 | "PID is the process ID to attach to, when --attach is specified.\n" | |
3405 | "\n" | |
3406 | "Operating modes:\n" | |
3407 | "\n" | |
3408 | " --attach Attach to running process PID.\n" | |
3409 | " --multi Start server without a specific program, and\n" | |
3410 | " only quit when explicitly commanded.\n" | |
3411 | " --once Exit after the first connection has closed.\n" | |
3412 | " --help Print this message and then exit.\n" | |
3413 | " --version Display version information and exit.\n" | |
3414 | "\n" | |
3415 | "Other options:\n" | |
3416 | "\n" | |
3417 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" | |
3418 | " --disable-randomization\n" | |
3419 | " Run PROG with address space randomization disabled.\n" | |
3420 | " --no-disable-randomization\n" | |
3421 | " Don't disable address space randomization when\n" | |
3422 | " starting PROG.\n" | |
aefd8b33 SDJ |
3423 | " --startup-with-shell\n" |
3424 | " Start PROG using a shell. I.e., execs a shell that\n" | |
3425 | " then execs PROG. (default)\n" | |
3426 | " --no-startup-with-shell\n" | |
3427 | " Exec PROG directly instead of using a shell.\n" | |
3428 | " Disables argument globbing and variable substitution\n" | |
3429 | " on UNIX-like systems.\n" | |
41f98f02 PA |
3430 | "\n" |
3431 | "Debug options:\n" | |
c16158bc | 3432 | "\n" |
62709adf | 3433 | " --debug Enable general debugging output.\n" |
227a9e65 | 3434 | " --debug-format=OPT1[,OPT2,...]\n" |
87ce2a04 DE |
3435 | " Specify extra content in debugging output.\n" |
3436 | " Options:\n" | |
3437 | " all\n" | |
3438 | " none\n" | |
87ce2a04 | 3439 | " timestamp\n" |
62709adf | 3440 | " --remote-debug Enable remote protocol debugging output.\n" |
227a9e65 | 3441 | " --disable-packet=OPT1[,OPT2,...]\n" |
41f98f02 PA |
3442 | " Disable support for RSP packets or features.\n" |
3443 | " Options:\n" | |
3444 | " vCont, Tthread, qC, qfThreadInfo and \n" | |
3445 | " threads (disable all threading packets).\n" | |
3446 | "\n" | |
3447 | "For more information, consult the GDB manual (available as on-line \n" | |
3448 | "info or a printed manual).\n"); | |
c16158bc JM |
3449 | if (REPORT_BUGS_TO[0] && stream == stdout) |
3450 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
3451 | } |
3452 | ||
db42f210 PA |
3453 | static void |
3454 | gdbserver_show_disableable (FILE *stream) | |
3455 | { | |
3456 | fprintf (stream, "Disableable packets:\n" | |
3457 | " vCont \tAll vCont packets\n" | |
3458 | " qC \tQuerying the current thread\n" | |
3459 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
3460 | " Tthread \tPassing the thread specifier in the " |
3461 | "T stop reply packet\n" | |
db42f210 PA |
3462 | " threads \tAll of the above\n"); |
3463 | } | |
3464 | ||
95954743 | 3465 | static void |
9179355e | 3466 | kill_inferior_callback (process_info *process) |
95954743 | 3467 | { |
a780ef4f PA |
3468 | kill_inferior (process); |
3469 | discard_queued_stop_replies (ptid_t (process->pid)); | |
95954743 PA |
3470 | } |
3471 | ||
9f767825 DE |
3472 | /* Call this when exiting gdbserver with possible inferiors that need |
3473 | to be killed or detached from. */ | |
3474 | ||
3475 | static void | |
3476 | detach_or_kill_for_exit (void) | |
3477 | { | |
3478 | /* First print a list of the inferiors we will be killing/detaching. | |
3479 | This is to assist the user, for example, in case the inferior unexpectedly | |
3480 | dies after we exit: did we screw up or did the inferior exit on its own? | |
3481 | Having this info will save some head-scratching. */ | |
3482 | ||
3483 | if (have_started_inferiors_p ()) | |
3484 | { | |
3485 | fprintf (stderr, "Killing process(es):"); | |
9179355e SM |
3486 | |
3487 | for_each_process ([] (process_info *process) { | |
3488 | if (!process->attached) | |
3489 | fprintf (stderr, " %d", process->pid); | |
3490 | }); | |
3491 | ||
9f767825 DE |
3492 | fprintf (stderr, "\n"); |
3493 | } | |
3494 | if (have_attached_inferiors_p ()) | |
3495 | { | |
3496 | fprintf (stderr, "Detaching process(es):"); | |
9179355e SM |
3497 | |
3498 | for_each_process ([] (process_info *process) { | |
3499 | if (process->attached) | |
3500 | fprintf (stderr, " %d", process->pid); | |
3501 | }); | |
3502 | ||
9f767825 DE |
3503 | fprintf (stderr, "\n"); |
3504 | } | |
3505 | ||
3506 | /* Now we can kill or detach the inferiors. */ | |
9179355e SM |
3507 | for_each_process ([] (process_info *process) { |
3508 | int pid = process->pid; | |
3509 | ||
3510 | if (process->attached) | |
ef2ddb33 | 3511 | detach_inferior (process); |
9179355e | 3512 | else |
a780ef4f | 3513 | kill_inferior (process); |
9f767825 | 3514 | |
f2907e49 | 3515 | discard_queued_stop_replies (ptid_t (pid)); |
9179355e | 3516 | }); |
9f767825 DE |
3517 | } |
3518 | ||
860789c7 GB |
3519 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
3520 | static int exit_code; | |
3521 | ||
37991b4f TT |
3522 | /* Wrapper for detach_or_kill_for_exit that catches and prints |
3523 | errors. */ | |
860789c7 GB |
3524 | |
3525 | static void | |
37991b4f | 3526 | detach_or_kill_for_exit_cleanup () |
860789c7 | 3527 | { |
a70b8144 | 3528 | try |
860789c7 GB |
3529 | { |
3530 | detach_or_kill_for_exit (); | |
3531 | } | |
230d2906 | 3532 | catch (const gdb_exception &exception) |
860789c7 GB |
3533 | { |
3534 | fflush (stdout); | |
3d6e9d23 TT |
3535 | fprintf (stderr, "Detach or kill failed: %s\n", |
3536 | exception.what ()); | |
860789c7 GB |
3537 | exit_code = 1; |
3538 | } | |
3539 | } | |
3540 | ||
3541 | /* Main function. This is called by the real "main" function, | |
3542 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3543 | ||
3544 | static void ATTRIBUTE_NORETURN | |
3545 | captured_main (int argc, char *argv[]) | |
c906108c | 3546 | { |
0729219d DJ |
3547 | int bad_attach; |
3548 | int pid; | |
fb32b4f7 PA |
3549 | char *arg_end; |
3550 | const char *port = NULL; | |
2d717e4f | 3551 | char **next_arg = &argv[1]; |
89dc0afd JK |
3552 | volatile int multi_mode = 0; |
3553 | volatile int attach = 0; | |
2d717e4f | 3554 | int was_running; |
6d580b63 | 3555 | bool selftest = false; |
605fd3c6 | 3556 | #if GDB_SELF_TEST |
1526853e | 3557 | const char *selftest_filter = NULL; |
605fd3c6 | 3558 | #endif |
c906108c | 3559 | |
b4987c95 | 3560 | current_directory = getcwd (NULL, 0); |
c12a5089 SC |
3561 | client_state &cs = get_client_state (); |
3562 | ||
b4987c95 SDJ |
3563 | if (current_directory == NULL) |
3564 | { | |
81561546 | 3565 | error (_("Could not find current working directory: %s"), |
b4987c95 SDJ |
3566 | safe_strerror (errno)); |
3567 | } | |
3568 | ||
2d717e4f | 3569 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3570 | { |
2d717e4f DJ |
3571 | if (strcmp (*next_arg, "--version") == 0) |
3572 | { | |
3573 | gdbserver_version (); | |
3574 | exit (0); | |
3575 | } | |
3576 | else if (strcmp (*next_arg, "--help") == 0) | |
3577 | { | |
c16158bc | 3578 | gdbserver_usage (stdout); |
2d717e4f DJ |
3579 | exit (0); |
3580 | } | |
3581 | else if (strcmp (*next_arg, "--attach") == 0) | |
3582 | attach = 1; | |
3583 | else if (strcmp (*next_arg, "--multi") == 0) | |
3584 | multi_mode = 1; | |
ccd213ac DJ |
3585 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3586 | { | |
7c5ded6a SDJ |
3587 | char **tmp; |
3588 | ||
ccd213ac DJ |
3589 | next_arg++; |
3590 | ||
7c5ded6a | 3591 | tmp = next_arg; |
ccd213ac | 3592 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) |
7c5ded6a | 3593 | { |
2090129c SDJ |
3594 | wrapper_argv += *next_arg; |
3595 | wrapper_argv += ' '; | |
7c5ded6a SDJ |
3596 | next_arg++; |
3597 | } | |
ccd213ac | 3598 | |
2090129c SDJ |
3599 | if (!wrapper_argv.empty ()) |
3600 | { | |
3601 | /* Erase the last whitespace. */ | |
3602 | wrapper_argv.erase (wrapper_argv.end () - 1); | |
3603 | } | |
3604 | ||
7c5ded6a | 3605 | if (next_arg == tmp || *next_arg == NULL) |
ccd213ac | 3606 | { |
c16158bc | 3607 | gdbserver_usage (stderr); |
ccd213ac DJ |
3608 | exit (1); |
3609 | } | |
3610 | ||
3611 | /* Consume the "--". */ | |
3612 | *next_arg = NULL; | |
3613 | } | |
2d717e4f DJ |
3614 | else if (strcmp (*next_arg, "--debug") == 0) |
3615 | debug_threads = 1; | |
61012eef | 3616 | else if (startswith (*next_arg, "--debug-format=")) |
87ce2a04 | 3617 | { |
2cc05030 | 3618 | std::string error_msg |
87ce2a04 DE |
3619 | = parse_debug_format_options ((*next_arg) |
3620 | + sizeof ("--debug-format=") - 1, 0); | |
3621 | ||
2cc05030 | 3622 | if (!error_msg.empty ()) |
87ce2a04 | 3623 | { |
2cc05030 | 3624 | fprintf (stderr, "%s", error_msg.c_str ()); |
87ce2a04 DE |
3625 | exit (1); |
3626 | } | |
3627 | } | |
62709adf PA |
3628 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
3629 | remote_debug = 1; | |
aeb2e706 AH |
3630 | else if (startswith (*next_arg, "--debug-file=")) |
3631 | debug_set_output ((*next_arg) + sizeof ("--debug-file=") -1); | |
db42f210 PA |
3632 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3633 | { | |
3634 | gdbserver_show_disableable (stdout); | |
3635 | exit (0); | |
3636 | } | |
61012eef | 3637 | else if (startswith (*next_arg, "--disable-packet=")) |
db42f210 | 3638 | { |
ca3a04f6 CB |
3639 | char *packets = *next_arg += sizeof ("--disable-packet=") - 1; |
3640 | char *saveptr; | |
3641 | for (char *tok = strtok_r (packets, ",", &saveptr); | |
db42f210 | 3642 | tok != NULL; |
ca3a04f6 | 3643 | tok = strtok_r (NULL, ",", &saveptr)) |
db42f210 PA |
3644 | { |
3645 | if (strcmp ("vCont", tok) == 0) | |
3e6ec53a | 3646 | disable_packet_vCont = true; |
db42f210 | 3647 | else if (strcmp ("Tthread", tok) == 0) |
3e6ec53a | 3648 | disable_packet_Tthread = true; |
db42f210 | 3649 | else if (strcmp ("qC", tok) == 0) |
3e6ec53a | 3650 | disable_packet_qC = true; |
db42f210 | 3651 | else if (strcmp ("qfThreadInfo", tok) == 0) |
3e6ec53a | 3652 | disable_packet_qfThreadInfo = true; |
442131c1 AB |
3653 | else if (strcmp ("T", tok) == 0) |
3654 | disable_packet_T = true; | |
db42f210 PA |
3655 | else if (strcmp ("threads", tok) == 0) |
3656 | { | |
3e6ec53a CB |
3657 | disable_packet_vCont = true; |
3658 | disable_packet_Tthread = true; | |
3659 | disable_packet_qC = true; | |
3660 | disable_packet_qfThreadInfo = true; | |
db42f210 PA |
3661 | } |
3662 | else | |
3663 | { | |
3664 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3665 | tok); | |
3666 | gdbserver_show_disableable (stderr); | |
3667 | exit (1); | |
3668 | } | |
3669 | } | |
3670 | } | |
e0f9f062 DE |
3671 | else if (strcmp (*next_arg, "-") == 0) |
3672 | { | |
3673 | /* "-" specifies a stdio connection and is a form of port | |
3674 | specification. */ | |
fb32b4f7 PA |
3675 | port = STDIO_CONNECTION_NAME; |
3676 | next_arg++; | |
e0f9f062 DE |
3677 | break; |
3678 | } | |
03583c20 | 3679 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
c12a5089 | 3680 | cs.disable_randomization = 1; |
03583c20 | 3681 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) |
c12a5089 | 3682 | cs.disable_randomization = 0; |
aefd8b33 SDJ |
3683 | else if (strcmp (*next_arg, "--startup-with-shell") == 0) |
3684 | startup_with_shell = true; | |
3685 | else if (strcmp (*next_arg, "--no-startup-with-shell") == 0) | |
3686 | startup_with_shell = false; | |
03f2bd59 | 3687 | else if (strcmp (*next_arg, "--once") == 0) |
3e6ec53a | 3688 | run_once = true; |
6d580b63 YQ |
3689 | else if (strcmp (*next_arg, "--selftest") == 0) |
3690 | selftest = true; | |
1526853e SM |
3691 | else if (startswith (*next_arg, "--selftest=")) |
3692 | { | |
3693 | selftest = true; | |
605fd3c6 | 3694 | #if GDB_SELF_TEST |
1526853e | 3695 | selftest_filter = *next_arg + strlen ("--selftest="); |
605fd3c6 | 3696 | #endif |
1526853e | 3697 | } |
2d717e4f DJ |
3698 | else |
3699 | { | |
3700 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3701 | exit (1); | |
3702 | } | |
dd24457d | 3703 | |
2d717e4f DJ |
3704 | next_arg++; |
3705 | continue; | |
dd24457d DJ |
3706 | } |
3707 | ||
fb32b4f7 PA |
3708 | if (port == NULL) |
3709 | { | |
3710 | port = *next_arg; | |
3711 | next_arg++; | |
3712 | } | |
6d580b63 YQ |
3713 | if ((port == NULL || (!attach && !multi_mode && *next_arg == NULL)) |
3714 | && !selftest) | |
2d717e4f | 3715 | { |
c16158bc | 3716 | gdbserver_usage (stderr); |
2d717e4f DJ |
3717 | exit (1); |
3718 | } | |
3719 | ||
602e3198 JK |
3720 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3721 | opened by remote_prepare. */ | |
3722 | notice_open_fds (); | |
3723 | ||
e379cee6 | 3724 | save_original_signals_state (false); |
f348d89a | 3725 | |
e0f9f062 DE |
3726 | /* We need to know whether the remote connection is stdio before |
3727 | starting the inferior. Inferiors created in this scenario have | |
3728 | stdin,stdout redirected. So do this here before we call | |
3729 | start_inferior. */ | |
6d580b63 YQ |
3730 | if (port != NULL) |
3731 | remote_prepare (port); | |
e0f9f062 | 3732 | |
0729219d DJ |
3733 | bad_attach = 0; |
3734 | pid = 0; | |
2d717e4f DJ |
3735 | |
3736 | /* --attach used to come after PORT, so allow it there for | |
3737 | compatibility. */ | |
3738 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3739 | { |
2d717e4f DJ |
3740 | attach = 1; |
3741 | next_arg++; | |
45b7b345 DJ |
3742 | } |
3743 | ||
2d717e4f DJ |
3744 | if (attach |
3745 | && (*next_arg == NULL | |
3746 | || (*next_arg)[0] == '\0' | |
3747 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3748 | || *arg_end != '\0' | |
3749 | || next_arg[1] != NULL)) | |
3750 | bad_attach = 1; | |
3751 | ||
3752 | if (bad_attach) | |
dd24457d | 3753 | { |
c16158bc | 3754 | gdbserver_usage (stderr); |
dd24457d DJ |
3755 | exit (1); |
3756 | } | |
c906108c | 3757 | |
2090129c | 3758 | /* Gather information about the environment. */ |
9a6c7d9c | 3759 | our_environ = gdb_environ::from_host_environ (); |
2090129c | 3760 | |
a20d5e98 | 3761 | initialize_async_io (); |
4ce44c66 | 3762 | initialize_low (); |
2090129c | 3763 | have_job_control (); |
60f662b0 | 3764 | initialize_event_loop (); |
219f2f23 PA |
3765 | if (target_supports_tracepoints ()) |
3766 | initialize_tracepoint (); | |
4ce44c66 | 3767 | |
224c3ddb | 3768 | mem_buf = (unsigned char *) xmalloc (PBUFSIZ); |
0a30fbc4 | 3769 | |
6d580b63 YQ |
3770 | if (selftest) |
3771 | { | |
605fd3c6 | 3772 | #if GDB_SELF_TEST |
1526853e | 3773 | selftests::run_tests (selftest_filter); |
605fd3c6 | 3774 | #else |
8ecfd7bd | 3775 | printf (_("Selftests have been disabled for this build.\n")); |
605fd3c6 | 3776 | #endif |
6d580b63 YQ |
3777 | throw_quit ("Quit"); |
3778 | } | |
3779 | ||
2d717e4f | 3780 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3781 | { |
2d717e4f DJ |
3782 | int i, n; |
3783 | ||
3784 | n = argc - (next_arg - argv); | |
b02f78f9 | 3785 | program_path.set (make_unique_xstrdup (next_arg[0])); |
2090129c SDJ |
3786 | for (i = 1; i < n; i++) |
3787 | program_args.push_back (xstrdup (next_arg[i])); | |
3788 | program_args.push_back (NULL); | |
2d717e4f | 3789 | |
45b7b345 | 3790 | /* Wait till we are at first instruction in program. */ |
15295543 | 3791 | target_create_inferior (program_path.get (), program_args); |
c906108c | 3792 | |
c588c53c MS |
3793 | /* We are now (hopefully) stopped at the first instruction of |
3794 | the target process. This assumes that the target process was | |
3795 | successfully created. */ | |
45b7b345 | 3796 | } |
2d717e4f DJ |
3797 | else if (pid != 0) |
3798 | { | |
5b1c542e | 3799 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3800 | error ("Attaching not supported on this target"); |
3801 | ||
3802 | /* Otherwise succeeded. */ | |
3803 | } | |
45b7b345 DJ |
3804 | else |
3805 | { | |
c12a5089 SC |
3806 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
3807 | cs.last_status.value.integer = 0; | |
3808 | cs.last_ptid = minus_one_ptid; | |
45b7b345 | 3809 | } |
37991b4f TT |
3810 | |
3811 | SCOPE_EXIT { detach_or_kill_for_exit_cleanup (); }; | |
c906108c | 3812 | |
311de423 PA |
3813 | /* Don't report shared library events on the initial connection, |
3814 | even if some libraries are preloaded. Avoids the "stopped by | |
3815 | shared library event" notice on gdb side. */ | |
3816 | dlls_changed = 0; | |
3817 | ||
c12a5089 SC |
3818 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
3819 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3820 | was_running = 0; |
3821 | else | |
3822 | was_running = 1; | |
3823 | ||
3824 | if (!was_running && !multi_mode) | |
860789c7 | 3825 | error ("No program to debug"); |
c588c53c | 3826 | |
c906108c SS |
3827 | while (1) |
3828 | { | |
c12a5089 SC |
3829 | cs.noack_mode = 0; |
3830 | cs.multi_process = 0; | |
3831 | cs.report_fork_events = 0; | |
3832 | cs.report_vfork_events = 0; | |
3833 | cs.report_exec_events = 0; | |
8336d594 | 3834 | /* Be sure we're out of tfind mode. */ |
c12a5089 SC |
3835 | cs.current_traceframe = -1; |
3836 | cs.cont_thread = null_ptid; | |
3837 | cs.swbreak_feature = 0; | |
3838 | cs.hwbreak_feature = 0; | |
3839 | cs.vCont_supported = 0; | |
bd99dc85 | 3840 | |
2d717e4f | 3841 | remote_open (port); |
c906108c | 3842 | |
a70b8144 | 3843 | try |
2d717e4f | 3844 | { |
860789c7 GB |
3845 | /* Wait for events. This will return when all event sources |
3846 | are removed from the event loop. */ | |
3847 | start_event_loop (); | |
2d717e4f | 3848 | |
860789c7 | 3849 | /* If an exit was requested (using the "monitor exit" |
fddedbe6 PA |
3850 | command), terminate now. */ |
3851 | if (exit_requested) | |
3852 | throw_quit ("Quit"); | |
3853 | ||
3854 | /* The only other way to get here is for getpkt to fail: | |
3855 | ||
3856 | - If --once was specified, we're done. | |
bd99dc85 | 3857 | |
fddedbe6 PA |
3858 | - If not in extended-remote mode, and we're no longer |
3859 | debugging anything, simply exit: GDB has disconnected | |
3860 | after processing the last process exit. | |
3861 | ||
3862 | - Otherwise, close the connection and reopen it at the | |
3863 | top of the loop. */ | |
3864 | if (run_once || (!extended_protocol && !target_running ())) | |
860789c7 | 3865 | throw_quit ("Quit"); |
bd99dc85 | 3866 | |
860789c7 GB |
3867 | fprintf (stderr, |
3868 | "Remote side has terminated connection. " | |
3869 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3870 | |
860789c7 GB |
3871 | /* Get rid of any pending statuses. An eventual reconnection |
3872 | (by the same GDB instance or another) will refresh all its | |
3873 | state from scratch. */ | |
465a859e | 3874 | discard_queued_stop_replies (minus_one_ptid); |
f0045347 SM |
3875 | for_each_thread ([] (thread_info *thread) |
3876 | { | |
3877 | thread->status_pending_p = 0; | |
3878 | }); | |
9939e131 | 3879 | |
860789c7 | 3880 | if (tracing) |
8336d594 | 3881 | { |
860789c7 | 3882 | if (disconnected_tracing) |
8336d594 | 3883 | { |
860789c7 GB |
3884 | /* Try to enable non-stop/async mode, so we we can |
3885 | both wait for an async socket accept, and handle | |
3886 | async target events simultaneously. There's also | |
3887 | no point either in having the target always stop | |
3888 | all threads, when we're going to pass signals | |
3889 | down without informing GDB. */ | |
3890 | if (!non_stop) | |
3891 | { | |
52405d85 | 3892 | if (the_target->start_non_stop (true)) |
860789c7 GB |
3893 | non_stop = 1; |
3894 | ||
3895 | /* Detaching implicitly resumes all threads; | |
3896 | simply disconnecting does not. */ | |
3897 | } | |
3898 | } | |
3899 | else | |
3900 | { | |
3901 | fprintf (stderr, | |
3902 | "Disconnected tracing disabled; " | |
3903 | "stopping trace run.\n"); | |
3904 | stop_tracing (); | |
8336d594 PA |
3905 | } |
3906 | } | |
860789c7 | 3907 | } |
230d2906 | 3908 | catch (const gdb_exception_error &exception) |
860789c7 | 3909 | { |
608a1e46 | 3910 | fflush (stdout); |
3d6e9d23 | 3911 | fprintf (stderr, "gdbserver: %s\n", exception.what ()); |
608a1e46 | 3912 | |
860789c7 | 3913 | if (response_needed) |
8336d594 | 3914 | { |
c12a5089 SC |
3915 | write_enn (cs.own_buf); |
3916 | putpkt (cs.own_buf); | |
8336d594 | 3917 | } |
608a1e46 PA |
3918 | |
3919 | if (run_once) | |
3920 | throw_quit ("Quit"); | |
8336d594 | 3921 | } |
bd99dc85 PA |
3922 | } |
3923 | } | |
01f9e8fa | 3924 | |
860789c7 GB |
3925 | /* Main function. */ |
3926 | ||
3927 | int | |
3928 | main (int argc, char *argv[]) | |
3929 | { | |
860789c7 | 3930 | |
a70b8144 | 3931 | try |
860789c7 GB |
3932 | { |
3933 | captured_main (argc, argv); | |
3934 | } | |
230d2906 | 3935 | catch (const gdb_exception &exception) |
860789c7 | 3936 | { |
492d29ea PA |
3937 | if (exception.reason == RETURN_ERROR) |
3938 | { | |
3939 | fflush (stdout); | |
3d6e9d23 | 3940 | fprintf (stderr, "%s\n", exception.what ()); |
492d29ea PA |
3941 | fprintf (stderr, "Exiting\n"); |
3942 | exit_code = 1; | |
3943 | } | |
3944 | ||
3945 | exit (exit_code); | |
860789c7 GB |
3946 | } |
3947 | ||
492d29ea | 3948 | gdb_assert_not_reached ("captured_main should never return"); |
860789c7 GB |
3949 | } |
3950 | ||
802e8e6d PA |
3951 | /* Process options coming from Z packets for a breakpoint. PACKET is |
3952 | the packet buffer. *PACKET is updated to point to the first char | |
3953 | after the last processed option. */ | |
9f3a5c85 LM |
3954 | |
3955 | static void | |
256642e8 | 3956 | process_point_options (struct gdb_breakpoint *bp, const char **packet) |
9f3a5c85 | 3957 | { |
256642e8 | 3958 | const char *dataptr = *packet; |
d3ce09f5 | 3959 | int persist; |
9f3a5c85 LM |
3960 | |
3961 | /* Check if data has the correct format. */ | |
3962 | if (*dataptr != ';') | |
3963 | return; | |
3964 | ||
3965 | dataptr++; | |
3966 | ||
3967 | while (*dataptr) | |
3968 | { | |
d3ce09f5 SS |
3969 | if (*dataptr == ';') |
3970 | ++dataptr; | |
3971 | ||
3972 | if (*dataptr == 'X') | |
9f3a5c85 | 3973 | { |
d3ce09f5 | 3974 | /* Conditional expression. */ |
d171ca78 | 3975 | if (debug_threads) |
87ce2a04 | 3976 | debug_printf ("Found breakpoint condition.\n"); |
802e8e6d | 3977 | if (!add_breakpoint_condition (bp, &dataptr)) |
8424cc97 | 3978 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 | 3979 | } |
61012eef | 3980 | else if (startswith (dataptr, "cmds:")) |
d3ce09f5 SS |
3981 | { |
3982 | dataptr += strlen ("cmds:"); | |
3983 | if (debug_threads) | |
87ce2a04 | 3984 | debug_printf ("Found breakpoint commands %s.\n", dataptr); |
d3ce09f5 SS |
3985 | persist = (*dataptr == '1'); |
3986 | dataptr += 2; | |
802e8e6d | 3987 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
8424cc97 | 3988 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 SS |
3989 | } |
3990 | else | |
3991 | { | |
d3ce09f5 SS |
3992 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
3993 | *dataptr); | |
78a99e91 | 3994 | /* Skip tokens until we find one that we recognize. */ |
8424cc97 | 3995 | dataptr = strchrnul (dataptr, ';'); |
9f3a5c85 | 3996 | } |
9f3a5c85 LM |
3997 | } |
3998 | *packet = dataptr; | |
3999 | } | |
4000 | ||
bd99dc85 PA |
4001 | /* Event loop callback that handles a serial event. The first byte in |
4002 | the serial buffer gets us here. We expect characters to arrive at | |
4003 | a brisk pace, so we read the rest of the packet with a blocking | |
4004 | getpkt call. */ | |
01f9e8fa | 4005 | |
8336d594 | 4006 | static int |
bd99dc85 PA |
4007 | process_serial_event (void) |
4008 | { | |
c12a5089 | 4009 | client_state &cs = get_client_state (); |
bd99dc85 PA |
4010 | int signal; |
4011 | unsigned int len; | |
4012 | CORE_ADDR mem_addr; | |
4013 | unsigned char sig; | |
4014 | int packet_len; | |
4015 | int new_packet_len = -1; | |
4016 | ||
bd99dc85 PA |
4017 | disable_async_io (); |
4018 | ||
3e6ec53a | 4019 | response_needed = false; |
c12a5089 | 4020 | packet_len = getpkt (cs.own_buf); |
bd99dc85 PA |
4021 | if (packet_len <= 0) |
4022 | { | |
bd99dc85 | 4023 | remote_close (); |
8336d594 PA |
4024 | /* Force an event loop break. */ |
4025 | return -1; | |
bd99dc85 | 4026 | } |
3e6ec53a | 4027 | response_needed = true; |
bd99dc85 | 4028 | |
c12a5089 | 4029 | char ch = cs.own_buf[0]; |
bd99dc85 PA |
4030 | switch (ch) |
4031 | { | |
4032 | case 'q': | |
c12a5089 | 4033 | handle_query (cs.own_buf, packet_len, &new_packet_len); |
bd99dc85 PA |
4034 | break; |
4035 | case 'Q': | |
c12a5089 | 4036 | handle_general_set (cs.own_buf); |
bd99dc85 PA |
4037 | break; |
4038 | case 'D': | |
c12a5089 | 4039 | handle_detach (cs.own_buf); |
bd99dc85 PA |
4040 | break; |
4041 | case '!': | |
3e6ec53a | 4042 | extended_protocol = true; |
c12a5089 | 4043 | write_ok (cs.own_buf); |
bd99dc85 PA |
4044 | break; |
4045 | case '?': | |
c12a5089 | 4046 | handle_status (cs.own_buf); |
bd99dc85 PA |
4047 | break; |
4048 | case 'H': | |
c12a5089 | 4049 | if (cs.own_buf[1] == 'c' || cs.own_buf[1] == 'g' || cs.own_buf[1] == 's') |
bd99dc85 | 4050 | { |
c12a5089 | 4051 | require_running_or_break (cs.own_buf); |
95954743 | 4052 | |
c12a5089 | 4053 | ptid_t thread_id = read_ptid (&cs.own_buf[2], NULL); |
95954743 | 4054 | |
96cde54f | 4055 | if (thread_id == null_ptid || thread_id == minus_one_ptid) |
95954743 | 4056 | thread_id = null_ptid; |
96cde54f | 4057 | else if (thread_id.is_pid ()) |
95954743 | 4058 | { |
96cde54f SM |
4059 | /* The ptid represents a pid. */ |
4060 | thread_info *thread = find_any_thread_of_pid (thread_id.pid ()); | |
785922a5 SM |
4061 | |
4062 | if (thread == NULL) | |
95954743 | 4063 | { |
c12a5089 | 4064 | write_enn (cs.own_buf); |
95954743 PA |
4065 | break; |
4066 | } | |
4067 | ||
9c80ecd6 | 4068 | thread_id = thread->id; |
95954743 | 4069 | } |
bd99dc85 PA |
4070 | else |
4071 | { | |
96cde54f SM |
4072 | /* The ptid represents a lwp/tid. */ |
4073 | if (find_thread_ptid (thread_id) == NULL) | |
c906108c | 4074 | { |
c12a5089 | 4075 | write_enn (cs.own_buf); |
c906108c SS |
4076 | break; |
4077 | } | |
c906108c SS |
4078 | } |
4079 | ||
c12a5089 | 4080 | if (cs.own_buf[1] == 'g') |
c906108c | 4081 | { |
d7e15655 | 4082 | if (thread_id == null_ptid) |
c906108c | 4083 | { |
bd99dc85 PA |
4084 | /* GDB is telling us to choose any thread. Check if |
4085 | the currently selected thread is still valid. If | |
4086 | it is not, select the first available. */ | |
c12a5089 | 4087 | thread_info *thread = find_thread_ptid (cs.general_thread); |
bd99dc85 | 4088 | if (thread == NULL) |
f0db101d | 4089 | thread = get_first_thread (); |
9c80ecd6 | 4090 | thread_id = thread->id; |
c906108c | 4091 | } |
bd99dc85 | 4092 | |
c12a5089 | 4093 | cs.general_thread = thread_id; |
f557a88a | 4094 | set_desired_thread (); |
f0db101d | 4095 | gdb_assert (current_thread != NULL); |
c906108c | 4096 | } |
c12a5089 SC |
4097 | else if (cs.own_buf[1] == 'c') |
4098 | cs.cont_thread = thread_id; | |
c906108c | 4099 | |
c12a5089 | 4100 | write_ok (cs.own_buf); |
bd99dc85 PA |
4101 | } |
4102 | else | |
4103 | { | |
4104 | /* Silently ignore it so that gdb can extend the protocol | |
4105 | without compatibility headaches. */ | |
c12a5089 | 4106 | cs.own_buf[0] = '\0'; |
2d717e4f | 4107 | } |
bd99dc85 PA |
4108 | break; |
4109 | case 'g': | |
c12a5089 SC |
4110 | require_running_or_break (cs.own_buf); |
4111 | if (cs.current_traceframe >= 0) | |
219f2f23 | 4112 | { |
3aee8918 PA |
4113 | struct regcache *regcache |
4114 | = new_register_cache (current_target_desc ()); | |
219f2f23 | 4115 | |
c12a5089 | 4116 | if (fetch_traceframe_registers (cs.current_traceframe, |
219f2f23 | 4117 | regcache, -1) == 0) |
c12a5089 | 4118 | registers_to_string (regcache, cs.own_buf); |
219f2f23 | 4119 | else |
c12a5089 | 4120 | write_enn (cs.own_buf); |
219f2f23 PA |
4121 | free_register_cache (regcache); |
4122 | } | |
4123 | else | |
4124 | { | |
4125 | struct regcache *regcache; | |
4126 | ||
f557a88a | 4127 | if (!set_desired_thread ()) |
c12a5089 | 4128 | write_enn (cs.own_buf); |
f0db101d PA |
4129 | else |
4130 | { | |
4131 | regcache = get_thread_regcache (current_thread, 1); | |
c12a5089 | 4132 | registers_to_string (regcache, cs.own_buf); |
f0db101d | 4133 | } |
219f2f23 | 4134 | } |
bd99dc85 PA |
4135 | break; |
4136 | case 'G': | |
c12a5089 SC |
4137 | require_running_or_break (cs.own_buf); |
4138 | if (cs.current_traceframe >= 0) | |
4139 | write_enn (cs.own_buf); | |
219f2f23 PA |
4140 | else |
4141 | { | |
442ea881 PA |
4142 | struct regcache *regcache; |
4143 | ||
f557a88a | 4144 | if (!set_desired_thread ()) |
c12a5089 | 4145 | write_enn (cs.own_buf); |
f0db101d PA |
4146 | else |
4147 | { | |
4148 | regcache = get_thread_regcache (current_thread, 1); | |
c12a5089 SC |
4149 | registers_from_string (regcache, &cs.own_buf[1]); |
4150 | write_ok (cs.own_buf); | |
f0db101d | 4151 | } |
442ea881 | 4152 | } |
bd99dc85 PA |
4153 | break; |
4154 | case 'm': | |
da4ae14a TT |
4155 | { |
4156 | require_running_or_break (cs.own_buf); | |
4157 | decode_m_packet (&cs.own_buf[1], &mem_addr, &len); | |
4158 | int res = gdb_read_memory (mem_addr, mem_buf, len); | |
4159 | if (res < 0) | |
4160 | write_enn (cs.own_buf); | |
4161 | else | |
4162 | bin2hex (mem_buf, cs.own_buf, res); | |
4163 | } | |
bd99dc85 PA |
4164 | break; |
4165 | case 'M': | |
c12a5089 SC |
4166 | require_running_or_break (cs.own_buf); |
4167 | decode_M_packet (&cs.own_buf[1], &mem_addr, &len, &mem_buf); | |
90d74c30 | 4168 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
c12a5089 | 4169 | write_ok (cs.own_buf); |
bd99dc85 | 4170 | else |
c12a5089 | 4171 | write_enn (cs.own_buf); |
bd99dc85 PA |
4172 | break; |
4173 | case 'X': | |
c12a5089 SC |
4174 | require_running_or_break (cs.own_buf); |
4175 | if (decode_X_packet (&cs.own_buf[1], packet_len - 1, | |
fa593d66 | 4176 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 4177 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
c12a5089 | 4178 | write_enn (cs.own_buf); |
bd99dc85 | 4179 | else |
c12a5089 | 4180 | write_ok (cs.own_buf); |
bd99dc85 PA |
4181 | break; |
4182 | case 'C': | |
c12a5089 SC |
4183 | require_running_or_break (cs.own_buf); |
4184 | hex2bin (cs.own_buf + 1, &sig, 1); | |
e053fbc4 PA |
4185 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4186 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4187 | else |
4188 | signal = 0; | |
c12a5089 | 4189 | myresume (cs.own_buf, 0, signal); |
bd99dc85 PA |
4190 | break; |
4191 | case 'S': | |
c12a5089 SC |
4192 | require_running_or_break (cs.own_buf); |
4193 | hex2bin (cs.own_buf + 1, &sig, 1); | |
e053fbc4 PA |
4194 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4195 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4196 | else |
4197 | signal = 0; | |
c12a5089 | 4198 | myresume (cs.own_buf, 1, signal); |
bd99dc85 PA |
4199 | break; |
4200 | case 'c': | |
c12a5089 | 4201 | require_running_or_break (cs.own_buf); |
bd99dc85 | 4202 | signal = 0; |
c12a5089 | 4203 | myresume (cs.own_buf, 0, signal); |
bd99dc85 PA |
4204 | break; |
4205 | case 's': | |
c12a5089 | 4206 | require_running_or_break (cs.own_buf); |
bd99dc85 | 4207 | signal = 0; |
c12a5089 | 4208 | myresume (cs.own_buf, 1, signal); |
bd99dc85 | 4209 | break; |
c6314022 AR |
4210 | case 'Z': /* insert_ ... */ |
4211 | /* Fallthrough. */ | |
4212 | case 'z': /* remove_ ... */ | |
bd99dc85 | 4213 | { |
bd99dc85 | 4214 | char *dataptr; |
aca22551 | 4215 | ULONGEST addr; |
27165294 | 4216 | int kind; |
c12a5089 | 4217 | char type = cs.own_buf[1]; |
c6314022 | 4218 | int res; |
d993e290 | 4219 | const int insert = ch == 'Z'; |
c12a5089 | 4220 | const char *p = &cs.own_buf[3]; |
aca22551 PA |
4221 | |
4222 | p = unpack_varlen_hex (p, &addr); | |
27165294 | 4223 | kind = strtol (p + 1, &dataptr, 16); |
c6314022 | 4224 | |
802e8e6d | 4225 | if (insert) |
d993e290 | 4226 | { |
9aa76cd0 | 4227 | struct gdb_breakpoint *bp; |
802e8e6d | 4228 | |
27165294 | 4229 | bp = set_gdb_breakpoint (type, addr, kind, &res); |
802e8e6d | 4230 | if (bp != NULL) |
9f3a5c85 | 4231 | { |
802e8e6d PA |
4232 | res = 0; |
4233 | ||
4234 | /* GDB may have sent us a list of *point parameters to | |
4235 | be evaluated on the target's side. Read such list | |
4236 | here. If we already have a list of parameters, GDB | |
4237 | is telling us to drop that list and use this one | |
4238 | instead. */ | |
0a261ed8 | 4239 | clear_breakpoint_conditions_and_commands (bp); |
256642e8 PA |
4240 | const char *options = dataptr; |
4241 | process_point_options (bp, &options); | |
9f3a5c85 | 4242 | } |
d993e290 | 4243 | } |
802e8e6d | 4244 | else |
27165294 | 4245 | res = delete_gdb_breakpoint (type, addr, kind); |
bd99dc85 | 4246 | |
c6314022 | 4247 | if (res == 0) |
c12a5089 | 4248 | write_ok (cs.own_buf); |
c6314022 AR |
4249 | else if (res == 1) |
4250 | /* Unsupported. */ | |
c12a5089 | 4251 | cs.own_buf[0] = '\0'; |
bd99dc85 | 4252 | else |
c12a5089 | 4253 | write_enn (cs.own_buf); |
bd99dc85 PA |
4254 | break; |
4255 | } | |
4256 | case 'k': | |
3e6ec53a | 4257 | response_needed = false; |
bd99dc85 | 4258 | if (!target_running ()) |
95954743 PA |
4259 | /* The packet we received doesn't make sense - but we can't |
4260 | reply to it, either. */ | |
8336d594 | 4261 | return 0; |
c906108c | 4262 | |
95954743 | 4263 | fprintf (stderr, "Killing all inferiors\n"); |
9179355e SM |
4264 | |
4265 | for_each_process (kill_inferior_callback); | |
c906108c | 4266 | |
bd99dc85 PA |
4267 | /* When using the extended protocol, we wait with no program |
4268 | running. The traditional protocol will exit instead. */ | |
4269 | if (extended_protocol) | |
4270 | { | |
c12a5089 SC |
4271 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
4272 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
8336d594 | 4273 | return 0; |
bd99dc85 PA |
4274 | } |
4275 | else | |
8336d594 PA |
4276 | exit (0); |
4277 | ||
bd99dc85 PA |
4278 | case 'T': |
4279 | { | |
c12a5089 | 4280 | require_running_or_break (cs.own_buf); |
95954743 | 4281 | |
c12a5089 | 4282 | ptid_t thread_id = read_ptid (&cs.own_buf[1], NULL); |
96cde54f | 4283 | if (find_thread_ptid (thread_id) == NULL) |
bd99dc85 | 4284 | { |
c12a5089 | 4285 | write_enn (cs.own_buf); |
bd99dc85 PA |
4286 | break; |
4287 | } | |
4288 | ||
4289 | if (mythread_alive (thread_id)) | |
c12a5089 | 4290 | write_ok (cs.own_buf); |
bd99dc85 | 4291 | else |
c12a5089 | 4292 | write_enn (cs.own_buf); |
bd99dc85 PA |
4293 | } |
4294 | break; | |
4295 | case 'R': | |
3e6ec53a | 4296 | response_needed = false; |
bd99dc85 PA |
4297 | |
4298 | /* Restarting the inferior is only supported in the extended | |
4299 | protocol. */ | |
4300 | if (extended_protocol) | |
4301 | { | |
4302 | if (target_running ()) | |
9179355e SM |
4303 | for_each_process (kill_inferior_callback); |
4304 | ||
bd99dc85 PA |
4305 | fprintf (stderr, "GDBserver restarting\n"); |
4306 | ||
4307 | /* Wait till we are at 1st instruction in prog. */ | |
25e3c82c | 4308 | if (program_path.get () != NULL) |
51aee833 | 4309 | { |
15295543 | 4310 | target_create_inferior (program_path.get (), program_args); |
2090129c | 4311 | |
c12a5089 | 4312 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
51aee833 YQ |
4313 | { |
4314 | /* Stopped at the first instruction of the target | |
4315 | process. */ | |
c12a5089 | 4316 | cs.general_thread = cs.last_ptid; |
51aee833 YQ |
4317 | } |
4318 | else | |
4319 | { | |
4320 | /* Something went wrong. */ | |
c12a5089 | 4321 | cs.general_thread = null_ptid; |
51aee833 YQ |
4322 | } |
4323 | } | |
bd99dc85 PA |
4324 | else |
4325 | { | |
c12a5089 SC |
4326 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
4327 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
bd99dc85 | 4328 | } |
8336d594 | 4329 | return 0; |
c906108c SS |
4330 | } |
4331 | else | |
4332 | { | |
bd99dc85 PA |
4333 | /* It is a request we don't understand. Respond with an |
4334 | empty packet so that gdb knows that we don't support this | |
4335 | request. */ | |
c12a5089 | 4336 | cs.own_buf[0] = '\0'; |
bd99dc85 PA |
4337 | break; |
4338 | } | |
4339 | case 'v': | |
4340 | /* Extended (long) request. */ | |
c12a5089 | 4341 | handle_v_requests (cs.own_buf, packet_len, &new_packet_len); |
bd99dc85 PA |
4342 | break; |
4343 | ||
4344 | default: | |
4345 | /* It is a request we don't understand. Respond with an empty | |
4346 | packet so that gdb knows that we don't support this | |
4347 | request. */ | |
c12a5089 | 4348 | cs.own_buf[0] = '\0'; |
bd99dc85 PA |
4349 | break; |
4350 | } | |
4351 | ||
4352 | if (new_packet_len != -1) | |
c12a5089 | 4353 | putpkt_binary (cs.own_buf, new_packet_len); |
bd99dc85 | 4354 | else |
c12a5089 | 4355 | putpkt (cs.own_buf); |
bd99dc85 | 4356 | |
3e6ec53a | 4357 | response_needed = false; |
bd99dc85 | 4358 | |
8336d594 PA |
4359 | if (exit_requested) |
4360 | return -1; | |
4361 | ||
4362 | return 0; | |
c906108c | 4363 | } |
bd99dc85 PA |
4364 | |
4365 | /* Event-loop callback for serial events. */ | |
4366 | ||
8336d594 | 4367 | int |
bd99dc85 PA |
4368 | handle_serial_event (int err, gdb_client_data client_data) |
4369 | { | |
4370 | if (debug_threads) | |
87ce2a04 | 4371 | debug_printf ("handling possible serial event\n"); |
bd99dc85 PA |
4372 | |
4373 | /* Really handle it. */ | |
8336d594 PA |
4374 | if (process_serial_event () < 0) |
4375 | return -1; | |
bd99dc85 | 4376 | |
0bfdf32f | 4377 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4378 | Important in the non-stop mode asynchronous protocol. */ |
f557a88a | 4379 | set_desired_thread (); |
8336d594 PA |
4380 | |
4381 | return 0; | |
bd99dc85 PA |
4382 | } |
4383 | ||
f2faf941 PA |
4384 | /* Push a stop notification on the notification queue. */ |
4385 | ||
4386 | static void | |
4387 | push_stop_notification (ptid_t ptid, struct target_waitstatus *status) | |
4388 | { | |
b494cdff | 4389 | struct vstop_notif *vstop_notif = new struct vstop_notif; |
f2faf941 PA |
4390 | |
4391 | vstop_notif->status = *status; | |
4392 | vstop_notif->ptid = ptid; | |
4393 | /* Push Stop notification. */ | |
b494cdff | 4394 | notif_push (¬if_stop, vstop_notif); |
f2faf941 PA |
4395 | } |
4396 | ||
bd99dc85 PA |
4397 | /* Event-loop callback for target events. */ |
4398 | ||
8336d594 | 4399 | int |
bd99dc85 PA |
4400 | handle_target_event (int err, gdb_client_data client_data) |
4401 | { | |
c12a5089 | 4402 | client_state &cs = get_client_state (); |
bd99dc85 | 4403 | if (debug_threads) |
87ce2a04 | 4404 | debug_printf ("handling possible target event\n"); |
bd99dc85 | 4405 | |
c12a5089 | 4406 | cs.last_ptid = mywait (minus_one_ptid, &cs.last_status, |
95954743 | 4407 | TARGET_WNOHANG, 1); |
bd99dc85 | 4408 | |
c12a5089 | 4409 | if (cs.last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
fa96cb38 | 4410 | { |
f2faf941 | 4411 | if (gdb_connected () && report_no_resumed) |
c12a5089 | 4412 | push_stop_notification (null_ptid, &cs.last_status); |
fa96cb38 | 4413 | } |
c12a5089 | 4414 | else if (cs.last_status.kind != TARGET_WAITKIND_IGNORE) |
bd99dc85 | 4415 | { |
e99b03dc | 4416 | int pid = cs.last_ptid.pid (); |
8336d594 PA |
4417 | struct process_info *process = find_process_pid (pid); |
4418 | int forward_event = !gdb_connected () || process->gdb_detached; | |
4419 | ||
c12a5089 SC |
4420 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
4421 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
4422 | { |
4423 | mark_breakpoints_out (process); | |
c12a5089 | 4424 | target_mourn_inferior (cs.last_ptid); |
f9e39928 | 4425 | } |
c12a5089 | 4426 | else if (cs.last_status.kind == TARGET_WAITKIND_THREAD_EXITED) |
65706a29 | 4427 | ; |
ce1a5b52 | 4428 | else |
d20a8ad9 PA |
4429 | { |
4430 | /* We're reporting this thread as stopped. Update its | |
4431 | "want-stopped" state to what the client wants, until it | |
4432 | gets a new resume action. */ | |
0bfdf32f | 4433 | current_thread->last_resume_kind = resume_stop; |
c12a5089 | 4434 | current_thread->last_status = cs.last_status; |
d20a8ad9 | 4435 | } |
8336d594 PA |
4436 | |
4437 | if (forward_event) | |
4438 | { | |
4439 | if (!target_running ()) | |
4440 | { | |
4441 | /* The last process exited. We're done. */ | |
4442 | exit (0); | |
4443 | } | |
4444 | ||
c12a5089 SC |
4445 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
4446 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED | |
4447 | || cs.last_status.kind == TARGET_WAITKIND_THREAD_EXITED) | |
65706a29 PA |
4448 | ; |
4449 | else | |
8336d594 PA |
4450 | { |
4451 | /* A thread stopped with a signal, but gdb isn't | |
4452 | connected to handle it. Pass it down to the | |
4453 | inferior, as if it wasn't being traced. */ | |
049a8570 | 4454 | enum gdb_signal signal; |
8336d594 PA |
4455 | |
4456 | if (debug_threads) | |
87ce2a04 DE |
4457 | debug_printf ("GDB not connected; forwarding event %d for" |
4458 | " [%s]\n", | |
c12a5089 SC |
4459 | (int) cs.last_status.kind, |
4460 | target_pid_to_str (cs.last_ptid)); | |
8336d594 | 4461 | |
c12a5089 SC |
4462 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
4463 | signal = cs.last_status.value.sig; | |
65706a29 | 4464 | else |
049a8570 | 4465 | signal = GDB_SIGNAL_0; |
c12a5089 | 4466 | target_continue (cs.last_ptid, signal); |
8336d594 | 4467 | } |
8336d594 PA |
4468 | } |
4469 | else | |
c12a5089 | 4470 | push_stop_notification (cs.last_ptid, &cs.last_status); |
bd99dc85 PA |
4471 | } |
4472 | ||
0bfdf32f | 4473 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4474 | Important in the non-stop mode asynchronous protocol. */ |
f557a88a | 4475 | set_desired_thread (); |
8336d594 PA |
4476 | |
4477 | return 0; | |
bd99dc85 | 4478 | } |
6d580b63 YQ |
4479 | |
4480 | #if GDB_SELF_TEST | |
4481 | namespace selftests | |
4482 | { | |
4483 | ||
4484 | void | |
4485 | reset () | |
4486 | {} | |
4487 | ||
4488 | } // namespace selftests | |
4489 | #endif /* GDB_SELF_TEST */ |