Commit | Line | Data |
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c906108c | 1 | /* Main code for remote server for GDB. |
42a4f53d | 2 | Copyright (C) 1989-2019 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" |
2090129c | 44 | |
268a13a5 TT |
45 | #include "gdbsupport/selftest.h" |
46 | #include "gdbsupport/scope-exit.h" | |
6d580b63 | 47 | |
f8a4e119 SM |
48 | #define require_running_or_return(BUF) \ |
49 | if (!target_running ()) \ | |
50 | { \ | |
51 | write_enn (BUF); \ | |
52 | return; \ | |
53 | } | |
54 | ||
55 | #define require_running_or_break(BUF) \ | |
56 | if (!target_running ()) \ | |
57 | { \ | |
58 | write_enn (BUF); \ | |
59 | break; \ | |
60 | } | |
61 | ||
b4987c95 SDJ |
62 | /* String containing the current directory (what getwd would return). */ |
63 | ||
64 | char *current_directory; | |
65 | ||
2090129c SDJ |
66 | /* The environment to pass to the inferior when creating it. */ |
67 | ||
9a6c7d9c | 68 | static gdb_environ our_environ; |
2090129c | 69 | |
3e6ec53a | 70 | bool server_waiting; |
0d62e5e8 | 71 | |
3e6ec53a CB |
72 | static bool extended_protocol; |
73 | static bool response_needed; | |
74 | static bool exit_requested; | |
2d717e4f | 75 | |
03f2bd59 | 76 | /* --once: Exit after the first connection has closed. */ |
3e6ec53a | 77 | bool run_once; |
03f2bd59 | 78 | |
f2faf941 | 79 | /* Whether to report TARGET_WAITKING_NO_RESUMED events. */ |
3e6ec53a | 80 | static bool report_no_resumed; |
f2faf941 | 81 | |
3e6ec53a | 82 | bool non_stop; |
03583c20 | 83 | |
25e3c82c SDJ |
84 | static struct { |
85 | /* Set the PROGRAM_PATH. Here we adjust the path of the provided | |
86 | binary if needed. */ | |
87 | void set (gdb::unique_xmalloc_ptr<char> &&path) | |
88 | { | |
89 | m_path = std::move (path); | |
90 | ||
91 | /* Make sure we're using the absolute path of the inferior when | |
92 | creating it. */ | |
93 | if (!contains_dir_separator (m_path.get ())) | |
94 | { | |
95 | int reg_file_errno; | |
96 | ||
97 | /* Check if the file is in our CWD. If it is, then we prefix | |
98 | its name with CURRENT_DIRECTORY. Otherwise, we leave the | |
99 | name as-is because we'll try searching for it in $PATH. */ | |
100 | if (is_regular_file (m_path.get (), ®_file_errno)) | |
101 | m_path = gdb_abspath (m_path.get ()); | |
102 | } | |
103 | } | |
104 | ||
105 | /* Return the PROGRAM_PATH. */ | |
106 | char *get () | |
107 | { return m_path.get (); } | |
108 | ||
109 | private: | |
110 | /* The program name, adjusted if needed. */ | |
111 | gdb::unique_xmalloc_ptr<char> m_path; | |
112 | } program_path; | |
2090129c SDJ |
113 | static std::vector<char *> program_args; |
114 | static std::string wrapper_argv; | |
2d717e4f | 115 | |
a9fa9f7d DJ |
116 | /* The PID of the originally created or attached inferior. Used to |
117 | send signals to the process when GDB sends us an asynchronous interrupt | |
118 | (user hitting Control-C in the client), and to wait for the child to exit | |
119 | when no longer debugging it. */ | |
120 | ||
a1928bad | 121 | unsigned long signal_pid; |
a9fa9f7d | 122 | |
ec56be1b PA |
123 | /* Set if you want to disable optional thread related packets support |
124 | in gdbserver, for the sake of testing GDB against stubs that don't | |
125 | support them. */ | |
3e6ec53a CB |
126 | bool disable_packet_vCont; |
127 | bool disable_packet_Tthread; | |
128 | bool disable_packet_qC; | |
129 | bool disable_packet_qfThreadInfo; | |
ec56be1b | 130 | |
bd99dc85 PA |
131 | static unsigned char *mem_buf; |
132 | ||
14a00470 YQ |
133 | /* A sub-class of 'struct notif_event' for stop, holding information |
134 | relative to a single stop reply. We keep a queue of these to | |
135 | push to GDB in non-stop mode. */ | |
136 | ||
b494cdff | 137 | struct vstop_notif : public notif_event |
bd99dc85 | 138 | { |
bd99dc85 | 139 | /* Thread or process that got the event. */ |
95954743 | 140 | ptid_t ptid; |
bd99dc85 PA |
141 | |
142 | /* Event info. */ | |
143 | struct target_waitstatus status; | |
144 | }; | |
145 | ||
f4abbc16 MM |
146 | /* The current btrace configuration. This is gdbserver's mirror of GDB's |
147 | btrace configuration. */ | |
148 | static struct btrace_config current_btrace_conf; | |
149 | ||
c12a5089 SC |
150 | /* The client remote protocol state. */ |
151 | ||
152 | static client_state g_client_state; | |
153 | ||
154 | client_state & | |
155 | get_client_state () | |
156 | { | |
157 | client_state &cs = g_client_state; | |
158 | return cs; | |
159 | } | |
160 | ||
161 | ||
bd99dc85 PA |
162 | /* Put a stop reply to the stop reply queue. */ |
163 | ||
164 | static void | |
95954743 | 165 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 166 | { |
b494cdff | 167 | struct vstop_notif *new_notif = new struct vstop_notif; |
bd99dc85 | 168 | |
bd99dc85 PA |
169 | new_notif->ptid = ptid; |
170 | new_notif->status = *status; | |
171 | ||
b494cdff | 172 | notif_event_enque (¬if_stop, new_notif); |
bd99dc85 PA |
173 | } |
174 | ||
b494cdff TT |
175 | static bool |
176 | remove_all_on_match_ptid (struct notif_event *event, ptid_t filter_ptid) | |
bd99dc85 | 177 | { |
465a859e | 178 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; |
d20a8ad9 | 179 | |
b494cdff | 180 | return vstop_event->ptid.matches (filter_ptid); |
bd99dc85 PA |
181 | } |
182 | ||
465a859e | 183 | /* See server.h. */ |
bd99dc85 | 184 | |
465a859e PA |
185 | void |
186 | discard_queued_stop_replies (ptid_t ptid) | |
bd99dc85 | 187 | { |
b494cdff TT |
188 | std::list<notif_event *>::iterator iter, next, end; |
189 | end = notif_stop.queue.end (); | |
190 | for (iter = notif_stop.queue.begin (); iter != end; iter = next) | |
191 | { | |
192 | next = iter; | |
193 | ++next; | |
194 | ||
195 | if (remove_all_on_match_ptid (*iter, ptid)) | |
196 | { | |
197 | delete *iter; | |
198 | notif_stop.queue.erase (iter); | |
199 | } | |
200 | } | |
bd99dc85 PA |
201 | } |
202 | ||
bd99dc85 | 203 | static void |
14a00470 | 204 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 205 | { |
14a00470 YQ |
206 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
207 | ||
208 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
209 | } |
210 | ||
b494cdff | 211 | /* Helper for in_queued_stop_replies. */ |
5a04c4cf | 212 | |
b494cdff TT |
213 | static bool |
214 | in_queued_stop_replies_ptid (struct notif_event *event, ptid_t filter_ptid) | |
5a04c4cf | 215 | { |
5a04c4cf PA |
216 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; |
217 | ||
26a57c92 | 218 | if (vstop_event->ptid.matches (filter_ptid)) |
b494cdff | 219 | return true; |
5a04c4cf PA |
220 | |
221 | /* Don't resume fork children that GDB does not know about yet. */ | |
222 | if ((vstop_event->status.kind == TARGET_WAITKIND_FORKED | |
223 | || vstop_event->status.kind == TARGET_WAITKIND_VFORKED) | |
26a57c92 | 224 | && vstop_event->status.value.related_pid.matches (filter_ptid)) |
b494cdff | 225 | return true; |
5a04c4cf | 226 | |
b494cdff | 227 | return false; |
5a04c4cf PA |
228 | } |
229 | ||
230 | /* See server.h. */ | |
231 | ||
232 | int | |
233 | in_queued_stop_replies (ptid_t ptid) | |
234 | { | |
b494cdff TT |
235 | for (notif_event *event : notif_stop.queue) |
236 | { | |
237 | if (in_queued_stop_replies_ptid (event, ptid)) | |
238 | return true; | |
239 | } | |
240 | ||
241 | return false; | |
5a04c4cf PA |
242 | } |
243 | ||
14a00470 YQ |
244 | struct notif_server notif_stop = |
245 | { | |
b494cdff | 246 | "vStopped", "Stop", {}, vstop_notif_reply, |
14a00470 YQ |
247 | }; |
248 | ||
2d717e4f DJ |
249 | static int |
250 | target_running (void) | |
251 | { | |
649ebbca | 252 | return get_first_thread () != NULL; |
2d717e4f DJ |
253 | } |
254 | ||
268a13a5 | 255 | /* See gdbsupport/common-inferior.h. */ |
ccd213ac | 256 | |
2090129c SDJ |
257 | const char * |
258 | get_exec_wrapper () | |
259 | { | |
260 | return !wrapper_argv.empty () ? wrapper_argv.c_str () : NULL; | |
261 | } | |
eb97750b | 262 | |
268a13a5 | 263 | /* See gdbsupport/common-inferior.h. */ |
eb97750b | 264 | |
2090129c SDJ |
265 | char * |
266 | get_exec_file (int err) | |
267 | { | |
25e3c82c | 268 | if (err && program_path.get () == NULL) |
2090129c | 269 | error (_("No executable file specified.")); |
ccd213ac | 270 | |
25e3c82c | 271 | return program_path.get (); |
2090129c | 272 | } |
5b1c542e | 273 | |
2090129c | 274 | /* See server.h. */ |
d20a8ad9 | 275 | |
9a6c7d9c | 276 | gdb_environ * |
2090129c SDJ |
277 | get_environ () |
278 | { | |
9a6c7d9c | 279 | return &our_environ; |
c906108c SS |
280 | } |
281 | ||
45b7b345 | 282 | static int |
5b1c542e | 283 | attach_inferior (int pid) |
45b7b345 | 284 | { |
c12a5089 | 285 | client_state &cs = get_client_state (); |
45b7b345 DJ |
286 | /* myattach should return -1 if attaching is unsupported, |
287 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 288 | |
df0da8a2 AH |
289 | if (find_process_pid (pid) != nullptr) |
290 | error ("Already attached to process %d\n", pid); | |
291 | ||
45b7b345 DJ |
292 | if (myattach (pid) != 0) |
293 | return -1; | |
294 | ||
6910d122 | 295 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 296 | fflush (stderr); |
6910d122 | 297 | |
a9fa9f7d DJ |
298 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
299 | attach function, so that it can be the main thread instead of | |
300 | whichever we were told to attach to. */ | |
301 | signal_pid = pid; | |
302 | ||
bd99dc85 PA |
303 | if (!non_stop) |
304 | { | |
f2907e49 | 305 | cs.last_ptid = mywait (ptid_t (pid), &cs.last_status, 0, 0); |
bd99dc85 PA |
306 | |
307 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
308 | process using the "attach" command, but this is different; it's | |
309 | just using "target remote". Pretend it's just starting up. */ | |
c12a5089 SC |
310 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED |
311 | && cs.last_status.value.sig == GDB_SIGNAL_STOP) | |
312 | cs.last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 | 313 | |
0bfdf32f | 314 | current_thread->last_resume_kind = resume_stop; |
c12a5089 | 315 | current_thread->last_status = cs.last_status; |
bd99dc85 | 316 | } |
9db87ebd | 317 | |
45b7b345 DJ |
318 | return 0; |
319 | } | |
320 | ||
0876f84a DJ |
321 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
322 | or -1 otherwise. */ | |
323 | ||
324 | static int | |
d08aafef | 325 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 326 | { |
d08aafef PA |
327 | /* After the read marker and annex, qXfer looks like a |
328 | traditional 'm' packet. */ | |
329 | decode_m_packet (buf, ofs, len); | |
330 | ||
331 | return 0; | |
332 | } | |
333 | ||
334 | static int | |
335 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
336 | { | |
337 | /* Extract and NUL-terminate the object. */ | |
338 | *object = buf; | |
339 | while (*buf && *buf != ':') | |
340 | buf++; | |
341 | if (*buf == '\0') | |
342 | return -1; | |
343 | *buf++ = 0; | |
344 | ||
345 | /* Extract and NUL-terminate the read/write action. */ | |
346 | *rw = buf; | |
347 | while (*buf && *buf != ':') | |
348 | buf++; | |
349 | if (*buf == '\0') | |
350 | return -1; | |
351 | *buf++ = 0; | |
352 | ||
0876f84a DJ |
353 | /* Extract and NUL-terminate the annex. */ |
354 | *annex = buf; | |
355 | while (*buf && *buf != ':') | |
356 | buf++; | |
357 | if (*buf == '\0') | |
358 | return -1; | |
359 | *buf++ = 0; | |
360 | ||
d08aafef | 361 | *offset = buf; |
0876f84a DJ |
362 | return 0; |
363 | } | |
364 | ||
365 | /* Write the response to a successful qXfer read. Returns the | |
366 | length of the (binary) data stored in BUF, corresponding | |
367 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
368 | the first character of the response. */ | |
369 | static int | |
f98cd059 | 370 | write_qxfer_response (char *buf, const gdb_byte *data, int len, int is_more) |
0876f84a DJ |
371 | { |
372 | int out_len; | |
373 | ||
374 | if (is_more) | |
375 | buf[0] = 'm'; | |
376 | else | |
377 | buf[0] = 'l'; | |
378 | ||
124e13d9 SM |
379 | return remote_escape_output (data, len, 1, (unsigned char *) buf + 1, |
380 | &out_len, PBUFSIZ - 2) + 1; | |
0876f84a DJ |
381 | } |
382 | ||
f4abbc16 | 383 | /* Handle btrace enabling in BTS format. */ |
9accd112 | 384 | |
9ee23a85 | 385 | static void |
f4abbc16 | 386 | handle_btrace_enable_bts (struct thread_info *thread) |
9accd112 MM |
387 | { |
388 | if (thread->btrace != NULL) | |
9ee23a85 | 389 | error (_("Btrace already enabled.")); |
9accd112 | 390 | |
f4abbc16 | 391 | current_btrace_conf.format = BTRACE_FORMAT_BTS; |
9c80ecd6 | 392 | thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf); |
9accd112 MM |
393 | } |
394 | ||
bc504a31 | 395 | /* Handle btrace enabling in Intel Processor Trace format. */ |
b20a6524 | 396 | |
9ee23a85 | 397 | static void |
b20a6524 MM |
398 | handle_btrace_enable_pt (struct thread_info *thread) |
399 | { | |
400 | if (thread->btrace != NULL) | |
9ee23a85 | 401 | error (_("Btrace already enabled.")); |
b20a6524 MM |
402 | |
403 | current_btrace_conf.format = BTRACE_FORMAT_PT; | |
9c80ecd6 | 404 | thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf); |
b20a6524 MM |
405 | } |
406 | ||
9accd112 MM |
407 | /* Handle btrace disabling. */ |
408 | ||
9ee23a85 | 409 | static void |
9accd112 MM |
410 | handle_btrace_disable (struct thread_info *thread) |
411 | { | |
412 | ||
413 | if (thread->btrace == NULL) | |
9ee23a85 | 414 | error (_("Branch tracing not enabled.")); |
9accd112 MM |
415 | |
416 | if (target_disable_btrace (thread->btrace) != 0) | |
9ee23a85 | 417 | error (_("Could not disable branch tracing.")); |
9accd112 MM |
418 | |
419 | thread->btrace = NULL; | |
9accd112 MM |
420 | } |
421 | ||
422 | /* Handle the "Qbtrace" packet. */ | |
423 | ||
424 | static int | |
425 | handle_btrace_general_set (char *own_buf) | |
426 | { | |
c12a5089 | 427 | client_state &cs = get_client_state (); |
9accd112 | 428 | struct thread_info *thread; |
9accd112 MM |
429 | char *op; |
430 | ||
61012eef | 431 | if (!startswith (own_buf, "Qbtrace:")) |
9accd112 MM |
432 | return 0; |
433 | ||
434 | op = own_buf + strlen ("Qbtrace:"); | |
435 | ||
d7e15655 TT |
436 | if (cs.general_thread == null_ptid |
437 | || cs.general_thread == minus_one_ptid) | |
9accd112 MM |
438 | { |
439 | strcpy (own_buf, "E.Must select a single thread."); | |
440 | return -1; | |
441 | } | |
442 | ||
c12a5089 | 443 | thread = find_thread_ptid (cs.general_thread); |
9accd112 MM |
444 | if (thread == NULL) |
445 | { | |
446 | strcpy (own_buf, "E.No such thread."); | |
447 | return -1; | |
448 | } | |
449 | ||
a70b8144 | 450 | try |
9ee23a85 MM |
451 | { |
452 | if (strcmp (op, "bts") == 0) | |
453 | handle_btrace_enable_bts (thread); | |
454 | else if (strcmp (op, "pt") == 0) | |
455 | handle_btrace_enable_pt (thread); | |
456 | else if (strcmp (op, "off") == 0) | |
457 | handle_btrace_disable (thread); | |
458 | else | |
459 | error (_("Bad Qbtrace operation. Use bts, pt, or off.")); | |
460 | ||
461 | write_ok (own_buf); | |
462 | } | |
230d2906 | 463 | catch (const gdb_exception_error &exception) |
9ee23a85 | 464 | { |
3d6e9d23 | 465 | sprintf (own_buf, "E.%s", exception.what ()); |
9ee23a85 | 466 | } |
9accd112 MM |
467 | |
468 | return 1; | |
469 | } | |
470 | ||
d33501a5 MM |
471 | /* Handle the "Qbtrace-conf" packet. */ |
472 | ||
473 | static int | |
474 | handle_btrace_conf_general_set (char *own_buf) | |
475 | { | |
c12a5089 | 476 | client_state &cs = get_client_state (); |
d33501a5 MM |
477 | struct thread_info *thread; |
478 | char *op; | |
479 | ||
61012eef | 480 | if (!startswith (own_buf, "Qbtrace-conf:")) |
d33501a5 MM |
481 | return 0; |
482 | ||
483 | op = own_buf + strlen ("Qbtrace-conf:"); | |
484 | ||
d7e15655 TT |
485 | if (cs.general_thread == null_ptid |
486 | || cs.general_thread == minus_one_ptid) | |
d33501a5 MM |
487 | { |
488 | strcpy (own_buf, "E.Must select a single thread."); | |
489 | return -1; | |
490 | } | |
491 | ||
c12a5089 | 492 | thread = find_thread_ptid (cs.general_thread); |
d33501a5 MM |
493 | if (thread == NULL) |
494 | { | |
495 | strcpy (own_buf, "E.No such thread."); | |
496 | return -1; | |
497 | } | |
498 | ||
61012eef | 499 | if (startswith (op, "bts:size=")) |
d33501a5 MM |
500 | { |
501 | unsigned long size; | |
502 | char *endp = NULL; | |
503 | ||
504 | errno = 0; | |
505 | size = strtoul (op + strlen ("bts:size="), &endp, 16); | |
506 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
507 | { | |
508 | strcpy (own_buf, "E.Bad size value."); | |
509 | return -1; | |
510 | } | |
511 | ||
512 | current_btrace_conf.bts.size = (unsigned int) size; | |
513 | } | |
b20a6524 MM |
514 | else if (strncmp (op, "pt:size=", strlen ("pt:size=")) == 0) |
515 | { | |
516 | unsigned long size; | |
517 | char *endp = NULL; | |
518 | ||
519 | errno = 0; | |
520 | size = strtoul (op + strlen ("pt:size="), &endp, 16); | |
521 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
522 | { | |
523 | strcpy (own_buf, "E.Bad size value."); | |
524 | return -1; | |
525 | } | |
526 | ||
527 | current_btrace_conf.pt.size = (unsigned int) size; | |
528 | } | |
d33501a5 MM |
529 | else |
530 | { | |
531 | strcpy (own_buf, "E.Bad Qbtrace configuration option."); | |
532 | return -1; | |
533 | } | |
534 | ||
535 | write_ok (own_buf); | |
536 | return 1; | |
537 | } | |
538 | ||
89be2091 | 539 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
540 | |
541 | static void | |
89be2091 DJ |
542 | handle_general_set (char *own_buf) |
543 | { | |
c12a5089 | 544 | client_state &cs = get_client_state (); |
61012eef | 545 | if (startswith (own_buf, "QPassSignals:")) |
89be2091 | 546 | { |
a493e3e2 | 547 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
548 | const char *p = own_buf + strlen ("QPassSignals:"); |
549 | CORE_ADDR cursig; | |
550 | ||
551 | p = decode_address_to_semicolon (&cursig, p); | |
552 | for (i = 0; i < numsigs; i++) | |
553 | { | |
554 | if (i == cursig) | |
555 | { | |
c12a5089 | 556 | cs.pass_signals[i] = 1; |
89be2091 DJ |
557 | if (*p == '\0') |
558 | /* Keep looping, to clear the remaining signals. */ | |
559 | cursig = -1; | |
560 | else | |
561 | p = decode_address_to_semicolon (&cursig, p); | |
562 | } | |
563 | else | |
c12a5089 | 564 | cs.pass_signals[i] = 0; |
89be2091 DJ |
565 | } |
566 | strcpy (own_buf, "OK"); | |
567 | return; | |
568 | } | |
569 | ||
61012eef | 570 | if (startswith (own_buf, "QProgramSignals:")) |
9b224c5e | 571 | { |
a493e3e2 | 572 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
573 | const char *p = own_buf + strlen ("QProgramSignals:"); |
574 | CORE_ADDR cursig; | |
575 | ||
c12a5089 | 576 | cs.program_signals_p = 1; |
9b224c5e PA |
577 | |
578 | p = decode_address_to_semicolon (&cursig, p); | |
579 | for (i = 0; i < numsigs; i++) | |
580 | { | |
581 | if (i == cursig) | |
582 | { | |
c12a5089 | 583 | cs.program_signals[i] = 1; |
9b224c5e PA |
584 | if (*p == '\0') |
585 | /* Keep looping, to clear the remaining signals. */ | |
586 | cursig = -1; | |
587 | else | |
588 | p = decode_address_to_semicolon (&cursig, p); | |
589 | } | |
590 | else | |
c12a5089 | 591 | cs.program_signals[i] = 0; |
9b224c5e PA |
592 | } |
593 | strcpy (own_buf, "OK"); | |
594 | return; | |
595 | } | |
596 | ||
82075af2 JS |
597 | if (startswith (own_buf, "QCatchSyscalls:")) |
598 | { | |
599 | const char *p = own_buf + sizeof ("QCatchSyscalls:") - 1; | |
600 | int enabled = -1; | |
601 | CORE_ADDR sysno; | |
602 | struct process_info *process; | |
603 | ||
604 | if (!target_running () || !target_supports_catch_syscall ()) | |
605 | { | |
606 | write_enn (own_buf); | |
607 | return; | |
608 | } | |
609 | ||
610 | if (strcmp (p, "0") == 0) | |
611 | enabled = 0; | |
612 | else if (p[0] == '1' && (p[1] == ';' || p[1] == '\0')) | |
613 | enabled = 1; | |
614 | else | |
615 | { | |
616 | fprintf (stderr, "Unknown catch-syscalls mode requested: %s\n", | |
617 | own_buf); | |
618 | write_enn (own_buf); | |
619 | return; | |
620 | } | |
621 | ||
622 | process = current_process (); | |
f27866ba | 623 | process->syscalls_to_catch.clear (); |
82075af2 JS |
624 | |
625 | if (enabled) | |
626 | { | |
627 | p += 1; | |
628 | if (*p == ';') | |
629 | { | |
630 | p += 1; | |
631 | while (*p != '\0') | |
632 | { | |
633 | p = decode_address_to_semicolon (&sysno, p); | |
f27866ba | 634 | process->syscalls_to_catch.push_back (sysno); |
82075af2 JS |
635 | } |
636 | } | |
637 | else | |
f27866ba | 638 | process->syscalls_to_catch.push_back (ANY_SYSCALL); |
82075af2 JS |
639 | } |
640 | ||
641 | write_ok (own_buf); | |
642 | return; | |
643 | } | |
644 | ||
0a2dde4a SDJ |
645 | if (strcmp (own_buf, "QEnvironmentReset") == 0) |
646 | { | |
647 | our_environ = gdb_environ::from_host_environ (); | |
648 | ||
649 | write_ok (own_buf); | |
650 | return; | |
651 | } | |
652 | ||
653 | if (startswith (own_buf, "QEnvironmentHexEncoded:")) | |
654 | { | |
655 | const char *p = own_buf + sizeof ("QEnvironmentHexEncoded:") - 1; | |
656 | /* The final form of the environment variable. FINAL_VAR will | |
657 | hold the 'VAR=VALUE' format. */ | |
658 | std::string final_var = hex2str (p); | |
659 | std::string var_name, var_value; | |
660 | ||
661 | if (remote_debug) | |
662 | { | |
663 | debug_printf (_("[QEnvironmentHexEncoded received '%s']\n"), p); | |
664 | debug_printf (_("[Environment variable to be set: '%s']\n"), | |
665 | final_var.c_str ()); | |
666 | debug_flush (); | |
667 | } | |
668 | ||
669 | size_t pos = final_var.find ('='); | |
670 | if (pos == std::string::npos) | |
671 | { | |
672 | warning (_("Unexpected format for environment variable: '%s'"), | |
673 | final_var.c_str ()); | |
674 | write_enn (own_buf); | |
675 | return; | |
676 | } | |
677 | ||
678 | var_name = final_var.substr (0, pos); | |
679 | var_value = final_var.substr (pos + 1, std::string::npos); | |
680 | ||
681 | our_environ.set (var_name.c_str (), var_value.c_str ()); | |
682 | ||
683 | write_ok (own_buf); | |
684 | return; | |
685 | } | |
686 | ||
687 | if (startswith (own_buf, "QEnvironmentUnset:")) | |
688 | { | |
689 | const char *p = own_buf + sizeof ("QEnvironmentUnset:") - 1; | |
690 | std::string varname = hex2str (p); | |
691 | ||
692 | if (remote_debug) | |
693 | { | |
694 | debug_printf (_("[QEnvironmentUnset received '%s']\n"), p); | |
695 | debug_printf (_("[Environment variable to be unset: '%s']\n"), | |
696 | varname.c_str ()); | |
697 | debug_flush (); | |
698 | } | |
699 | ||
700 | our_environ.unset (varname.c_str ()); | |
701 | ||
702 | write_ok (own_buf); | |
703 | return; | |
704 | } | |
705 | ||
a6f3e723 SL |
706 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
707 | { | |
708 | if (remote_debug) | |
709 | { | |
4eefa7bc PA |
710 | debug_printf ("[noack mode enabled]\n"); |
711 | debug_flush (); | |
a6f3e723 SL |
712 | } |
713 | ||
c12a5089 | 714 | cs.noack_mode = 1; |
a6f3e723 SL |
715 | write_ok (own_buf); |
716 | return; | |
717 | } | |
718 | ||
61012eef | 719 | if (startswith (own_buf, "QNonStop:")) |
bd99dc85 PA |
720 | { |
721 | char *mode = own_buf + 9; | |
722 | int req = -1; | |
b2333d22 | 723 | const char *req_str; |
bd99dc85 PA |
724 | |
725 | if (strcmp (mode, "0") == 0) | |
726 | req = 0; | |
727 | else if (strcmp (mode, "1") == 0) | |
728 | req = 1; | |
729 | else | |
730 | { | |
731 | /* We don't know what this mode is, so complain to | |
732 | GDB. */ | |
733 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
734 | own_buf); | |
735 | write_enn (own_buf); | |
736 | return; | |
737 | } | |
738 | ||
739 | req_str = req ? "non-stop" : "all-stop"; | |
740 | if (start_non_stop (req) != 0) | |
741 | { | |
742 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
743 | write_enn (own_buf); | |
744 | return; | |
745 | } | |
746 | ||
3e6ec53a | 747 | non_stop = (req != 0); |
bd99dc85 PA |
748 | |
749 | if (remote_debug) | |
4eefa7bc | 750 | debug_printf ("[%s mode enabled]\n", req_str); |
bd99dc85 PA |
751 | |
752 | write_ok (own_buf); | |
753 | return; | |
754 | } | |
755 | ||
61012eef | 756 | if (startswith (own_buf, "QDisableRandomization:")) |
03583c20 UW |
757 | { |
758 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
759 | ULONGEST setting; | |
760 | ||
761 | unpack_varlen_hex (packet, &setting); | |
c12a5089 | 762 | cs.disable_randomization = setting; |
03583c20 UW |
763 | |
764 | if (remote_debug) | |
765 | { | |
c12a5089 | 766 | debug_printf (cs.disable_randomization |
4eefa7bc PA |
767 | ? "[address space randomization disabled]\n" |
768 | : "[address space randomization enabled]\n"); | |
03583c20 UW |
769 | } |
770 | ||
771 | write_ok (own_buf); | |
772 | return; | |
773 | } | |
774 | ||
219f2f23 PA |
775 | if (target_supports_tracepoints () |
776 | && handle_tracepoint_general_set (own_buf)) | |
777 | return; | |
778 | ||
61012eef | 779 | if (startswith (own_buf, "QAgent:")) |
d1feda86 YQ |
780 | { |
781 | char *mode = own_buf + strlen ("QAgent:"); | |
782 | int req = 0; | |
783 | ||
784 | if (strcmp (mode, "0") == 0) | |
785 | req = 0; | |
786 | else if (strcmp (mode, "1") == 0) | |
787 | req = 1; | |
788 | else | |
789 | { | |
790 | /* We don't know what this value is, so complain to GDB. */ | |
791 | sprintf (own_buf, "E.Unknown QAgent value"); | |
792 | return; | |
793 | } | |
794 | ||
795 | /* Update the flag. */ | |
796 | use_agent = req; | |
797 | if (remote_debug) | |
4eefa7bc | 798 | debug_printf ("[%s agent]\n", req ? "Enable" : "Disable"); |
d1feda86 YQ |
799 | write_ok (own_buf); |
800 | return; | |
801 | } | |
802 | ||
9accd112 MM |
803 | if (handle_btrace_general_set (own_buf)) |
804 | return; | |
805 | ||
d33501a5 MM |
806 | if (handle_btrace_conf_general_set (own_buf)) |
807 | return; | |
808 | ||
65706a29 PA |
809 | if (startswith (own_buf, "QThreadEvents:")) |
810 | { | |
811 | char *mode = own_buf + strlen ("QThreadEvents:"); | |
812 | enum tribool req = TRIBOOL_UNKNOWN; | |
813 | ||
814 | if (strcmp (mode, "0") == 0) | |
815 | req = TRIBOOL_FALSE; | |
816 | else if (strcmp (mode, "1") == 0) | |
817 | req = TRIBOOL_TRUE; | |
818 | else | |
819 | { | |
65706a29 PA |
820 | /* We don't know what this mode is, so complain to GDB. */ |
821 | sprintf (own_buf, "E.Unknown thread-events mode requested: %s\n", | |
b9671caf | 822 | mode); |
65706a29 PA |
823 | return; |
824 | } | |
825 | ||
c12a5089 | 826 | cs.report_thread_events = (req == TRIBOOL_TRUE); |
65706a29 PA |
827 | |
828 | if (remote_debug) | |
829 | { | |
c12a5089 | 830 | const char *req_str = cs.report_thread_events ? "enabled" : "disabled"; |
65706a29 | 831 | |
4eefa7bc | 832 | debug_printf ("[thread events are now %s]\n", req_str); |
65706a29 PA |
833 | } |
834 | ||
835 | write_ok (own_buf); | |
836 | return; | |
837 | } | |
838 | ||
aefd8b33 SDJ |
839 | if (startswith (own_buf, "QStartupWithShell:")) |
840 | { | |
841 | const char *value = own_buf + strlen ("QStartupWithShell:"); | |
842 | ||
843 | if (strcmp (value, "1") == 0) | |
844 | startup_with_shell = true; | |
845 | else if (strcmp (value, "0") == 0) | |
846 | startup_with_shell = false; | |
847 | else | |
848 | { | |
849 | /* Unknown value. */ | |
850 | fprintf (stderr, "Unknown value to startup-with-shell: %s\n", | |
851 | own_buf); | |
852 | write_enn (own_buf); | |
853 | return; | |
854 | } | |
855 | ||
856 | if (remote_debug) | |
857 | debug_printf (_("[Inferior will %s started with shell]"), | |
858 | startup_with_shell ? "be" : "not be"); | |
859 | ||
860 | write_ok (own_buf); | |
861 | return; | |
862 | } | |
863 | ||
bc3b087d SDJ |
864 | if (startswith (own_buf, "QSetWorkingDir:")) |
865 | { | |
866 | const char *p = own_buf + strlen ("QSetWorkingDir:"); | |
867 | ||
868 | if (*p != '\0') | |
869 | { | |
870 | std::string path = hex2str (p); | |
871 | ||
872 | set_inferior_cwd (path.c_str ()); | |
873 | ||
874 | if (remote_debug) | |
875 | debug_printf (_("[Set the inferior's current directory to %s]\n"), | |
876 | path.c_str ()); | |
877 | } | |
878 | else | |
879 | { | |
880 | /* An empty argument means that we should clear out any | |
881 | previously set cwd for the inferior. */ | |
882 | set_inferior_cwd (NULL); | |
883 | ||
884 | if (remote_debug) | |
885 | debug_printf (_("\ | |
886 | [Unset the inferior's current directory; will use gdbserver's cwd]\n")); | |
887 | } | |
888 | write_ok (own_buf); | |
889 | ||
890 | return; | |
891 | } | |
892 | ||
89be2091 DJ |
893 | /* Otherwise we didn't know what packet it was. Say we didn't |
894 | understand it. */ | |
895 | own_buf[0] = 0; | |
896 | } | |
897 | ||
23181151 | 898 | static const char * |
fb1e4ffc | 899 | get_features_xml (const char *annex) |
23181151 | 900 | { |
3aee8918 PA |
901 | const struct target_desc *desc = current_target_desc (); |
902 | ||
903 | /* `desc->xmltarget' defines what to return when looking for the | |
904 | "target.xml" file. Its contents can either be verbatim XML code | |
905 | (prefixed with a '@') or else the name of the actual XML file to | |
906 | be used in place of "target.xml". | |
fb1e4ffc | 907 | |
9b4b61c8 UW |
908 | This variable is set up from the auto-generated |
909 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 910 | |
0abe8a89 | 911 | if (strcmp (annex, "target.xml") == 0) |
23181151 | 912 | { |
e98577a9 | 913 | const char *ret = tdesc_get_features_xml (desc); |
0abe8a89 YQ |
914 | |
915 | if (*ret == '@') | |
916 | return ret + 1; | |
23181151 | 917 | else |
0abe8a89 | 918 | annex = ret; |
23181151 DJ |
919 | } |
920 | ||
9b4b61c8 UW |
921 | #ifdef USE_XML |
922 | { | |
923 | extern const char *const xml_builtin[][2]; | |
924 | int i; | |
925 | ||
926 | /* Look for the annex. */ | |
927 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
928 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
929 | break; | |
930 | ||
931 | if (xml_builtin[i][0] != NULL) | |
932 | return xml_builtin[i][1]; | |
933 | } | |
934 | #endif | |
935 | ||
936 | return NULL; | |
23181151 DJ |
937 | } |
938 | ||
5b3da067 | 939 | static void |
c74d0ad8 DJ |
940 | monitor_show_help (void) |
941 | { | |
942 | monitor_output ("The following monitor commands are supported:\n"); | |
943 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 944 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
945 | monitor_output (" set debug-hw-points <0|1>\n"); |
946 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
947 | monitor_output (" set remote-debug <0|1>\n"); |
948 | monitor_output (" Enable remote protocol debugging messages\n"); | |
87ce2a04 DE |
949 | monitor_output (" set debug-format option1[,option2,...]\n"); |
950 | monitor_output (" Add additional information to debugging messages\n"); | |
951 | monitor_output (" Options: all, none"); | |
87ce2a04 | 952 | monitor_output (", timestamp"); |
87ce2a04 | 953 | monitor_output ("\n"); |
ecd7ecbc DJ |
954 | monitor_output (" exit\n"); |
955 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
956 | } |
957 | ||
764880b7 PA |
958 | /* Read trace frame or inferior memory. Returns the number of bytes |
959 | actually read, zero when no further transfer is possible, and -1 on | |
960 | error. Return of a positive value smaller than LEN does not | |
961 | indicate there's no more to be read, only the end of the transfer. | |
962 | E.g., when GDB reads memory from a traceframe, a first request may | |
963 | be served from a memory block that does not cover the whole request | |
964 | length. A following request gets the rest served from either | |
965 | another block (of the same traceframe) or from the read-only | |
966 | regions. */ | |
219f2f23 PA |
967 | |
968 | static int | |
90d74c30 | 969 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 970 | { |
c12a5089 | 971 | client_state &cs = get_client_state (); |
764880b7 | 972 | int res; |
90d74c30 | 973 | |
c12a5089 | 974 | if (cs.current_traceframe >= 0) |
219f2f23 PA |
975 | { |
976 | ULONGEST nbytes; | |
977 | ULONGEST length = len; | |
978 | ||
c12a5089 | 979 | if (traceframe_read_mem (cs.current_traceframe, |
219f2f23 | 980 | memaddr, myaddr, len, &nbytes)) |
9a13b2fa | 981 | return -1; |
219f2f23 | 982 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
983 | if (nbytes > 0) |
984 | return nbytes; | |
219f2f23 | 985 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 986 | return -1; |
219f2f23 PA |
987 | /* Otherwise we have a valid readonly case, fall through. */ |
988 | /* (assume no half-trace half-real blocks for now) */ | |
989 | } | |
990 | ||
764880b7 PA |
991 | res = prepare_to_access_memory (); |
992 | if (res == 0) | |
90d74c30 | 993 | { |
f557a88a | 994 | if (set_desired_thread ()) |
f0db101d PA |
995 | res = read_inferior_memory (memaddr, myaddr, len); |
996 | else | |
997 | res = 1; | |
0146f85b | 998 | done_accessing_memory (); |
90d74c30 | 999 | |
764880b7 PA |
1000 | return res == 0 ? len : -1; |
1001 | } | |
1002 | else | |
1003 | return -1; | |
219f2f23 PA |
1004 | } |
1005 | ||
1006 | /* Write trace frame or inferior memory. Actually, writing to trace | |
1007 | frames is forbidden. */ | |
1008 | ||
1009 | static int | |
90d74c30 | 1010 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 | 1011 | { |
c12a5089 SC |
1012 | client_state &cs = get_client_state (); |
1013 | if (cs.current_traceframe >= 0) | |
219f2f23 PA |
1014 | return EIO; |
1015 | else | |
90d74c30 PA |
1016 | { |
1017 | int ret; | |
1018 | ||
1019 | ret = prepare_to_access_memory (); | |
1020 | if (ret == 0) | |
1021 | { | |
f557a88a | 1022 | if (set_desired_thread ()) |
4196ab2a | 1023 | ret = target_write_memory (memaddr, myaddr, len); |
f0db101d PA |
1024 | else |
1025 | ret = EIO; | |
0146f85b | 1026 | done_accessing_memory (); |
90d74c30 PA |
1027 | } |
1028 | return ret; | |
1029 | } | |
219f2f23 PA |
1030 | } |
1031 | ||
08388c79 DE |
1032 | /* Subroutine of handle_search_memory to simplify it. */ |
1033 | ||
1034 | static int | |
1035 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
1036 | gdb_byte *pattern, unsigned pattern_len, | |
1037 | gdb_byte *search_buf, | |
1038 | unsigned chunk_size, unsigned search_buf_size, | |
1039 | CORE_ADDR *found_addrp) | |
1040 | { | |
1041 | /* Prime the search buffer. */ | |
1042 | ||
764880b7 PA |
1043 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
1044 | != search_buf_size) | |
08388c79 | 1045 | { |
b3dc46ff AB |
1046 | warning ("Unable to access %ld bytes of target " |
1047 | "memory at 0x%lx, halting search.", | |
1048 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
1049 | return -1; |
1050 | } | |
1051 | ||
1052 | /* Perform the search. | |
1053 | ||
1054 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
1055 | When we've scanned N bytes we copy the trailing bytes to the start and | |
1056 | read in another N bytes. */ | |
1057 | ||
1058 | while (search_space_len >= pattern_len) | |
1059 | { | |
1060 | gdb_byte *found_ptr; | |
1061 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
1062 | ? search_space_len | |
1063 | : search_buf_size); | |
1064 | ||
d6f85c84 SM |
1065 | found_ptr = (gdb_byte *) memmem (search_buf, nr_search_bytes, pattern, |
1066 | pattern_len); | |
08388c79 DE |
1067 | |
1068 | if (found_ptr != NULL) | |
1069 | { | |
1070 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
1071 | *found_addrp = found_addr; | |
1072 | return 1; | |
1073 | } | |
1074 | ||
1075 | /* Not found in this chunk, skip to next chunk. */ | |
1076 | ||
1077 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
1078 | if (search_space_len >= chunk_size) | |
1079 | search_space_len -= chunk_size; | |
1080 | else | |
1081 | search_space_len = 0; | |
1082 | ||
1083 | if (search_space_len >= pattern_len) | |
1084 | { | |
1085 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 1086 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
1087 | int nr_to_read; |
1088 | ||
1089 | /* Copy the trailing part of the previous iteration to the front | |
1090 | of the buffer for the next iteration. */ | |
1091 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
1092 | ||
1093 | nr_to_read = (search_space_len - keep_len < chunk_size | |
1094 | ? search_space_len - keep_len | |
1095 | : chunk_size); | |
1096 | ||
90d74c30 | 1097 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 1098 | nr_to_read) != search_buf_size) |
08388c79 | 1099 | { |
b3dc46ff | 1100 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 1101 | "at 0x%lx, halting search.", |
b3dc46ff | 1102 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
1103 | return -1; |
1104 | } | |
1105 | ||
1106 | start_addr += chunk_size; | |
1107 | } | |
1108 | } | |
1109 | ||
1110 | /* Not found. */ | |
1111 | ||
1112 | return 0; | |
1113 | } | |
1114 | ||
1115 | /* Handle qSearch:memory packets. */ | |
1116 | ||
1117 | static void | |
1118 | handle_search_memory (char *own_buf, int packet_len) | |
1119 | { | |
1120 | CORE_ADDR start_addr; | |
1121 | CORE_ADDR search_space_len; | |
1122 | gdb_byte *pattern; | |
1123 | unsigned int pattern_len; | |
1124 | /* NOTE: also defined in find.c testcase. */ | |
1125 | #define SEARCH_CHUNK_SIZE 16000 | |
1126 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
1127 | /* Buffer to hold memory contents for searching. */ | |
1128 | gdb_byte *search_buf; | |
1129 | unsigned search_buf_size; | |
1130 | int found; | |
1131 | CORE_ADDR found_addr; | |
1132 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
1133 | ||
224c3ddb | 1134 | pattern = (gdb_byte *) malloc (packet_len); |
08388c79 DE |
1135 | if (pattern == NULL) |
1136 | { | |
5e1471f5 | 1137 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1138 | strcpy (own_buf, "E00"); |
1139 | return; | |
1140 | } | |
1141 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
1142 | packet_len - cmd_name_len, | |
1143 | &start_addr, &search_space_len, | |
1144 | pattern, &pattern_len) < 0) | |
1145 | { | |
1146 | free (pattern); | |
5e1471f5 | 1147 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
1148 | strcpy (own_buf, "E00"); |
1149 | return; | |
1150 | } | |
1151 | ||
1152 | search_buf_size = chunk_size + pattern_len - 1; | |
1153 | ||
1154 | /* No point in trying to allocate a buffer larger than the search space. */ | |
1155 | if (search_space_len < search_buf_size) | |
1156 | search_buf_size = search_space_len; | |
1157 | ||
224c3ddb | 1158 | search_buf = (gdb_byte *) malloc (search_buf_size); |
08388c79 DE |
1159 | if (search_buf == NULL) |
1160 | { | |
1161 | free (pattern); | |
5e1471f5 | 1162 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1163 | strcpy (own_buf, "E00"); |
1164 | return; | |
1165 | } | |
1166 | ||
1167 | found = handle_search_memory_1 (start_addr, search_space_len, | |
1168 | pattern, pattern_len, | |
1169 | search_buf, chunk_size, search_buf_size, | |
1170 | &found_addr); | |
1171 | ||
1172 | if (found > 0) | |
1173 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
1174 | else if (found == 0) | |
1175 | strcpy (own_buf, "0"); | |
1176 | else | |
1177 | strcpy (own_buf, "E00"); | |
1178 | ||
1179 | free (search_buf); | |
1180 | free (pattern); | |
1181 | } | |
1182 | ||
e8ca139e SM |
1183 | /* Handle the "D" packet. */ |
1184 | ||
1185 | static void | |
1186 | handle_detach (char *own_buf) | |
1187 | { | |
c12a5089 | 1188 | client_state &cs = get_client_state (); |
e8ca139e | 1189 | |
31445d10 | 1190 | process_info *process; |
e8ca139e | 1191 | |
c12a5089 | 1192 | if (cs.multi_process) |
e8ca139e SM |
1193 | { |
1194 | /* skip 'D;' */ | |
31445d10 PA |
1195 | int pid = strtol (&own_buf[2], NULL, 16); |
1196 | ||
1197 | process = find_process_pid (pid); | |
e8ca139e SM |
1198 | } |
1199 | else | |
e8ca139e | 1200 | { |
31445d10 PA |
1201 | process = (current_thread != nullptr |
1202 | ? get_thread_process (current_thread) | |
1203 | : nullptr); | |
1204 | } | |
e8ca139e | 1205 | |
31445d10 PA |
1206 | if (process == NULL) |
1207 | { | |
1208 | write_enn (own_buf); | |
1209 | return; | |
1210 | } | |
e8ca139e | 1211 | |
31445d10 PA |
1212 | if ((tracing && disconnected_tracing) || any_persistent_commands (process)) |
1213 | { | |
e8ca139e SM |
1214 | if (tracing && disconnected_tracing) |
1215 | fprintf (stderr, | |
1216 | "Disconnected tracing in effect, " | |
1217 | "leaving gdbserver attached to the process\n"); | |
1218 | ||
31445d10 | 1219 | if (any_persistent_commands (process)) |
e8ca139e SM |
1220 | fprintf (stderr, |
1221 | "Persistent commands are present, " | |
1222 | "leaving gdbserver attached to the process\n"); | |
1223 | ||
1224 | /* Make sure we're in non-stop/async mode, so we we can both | |
1225 | wait for an async socket accept, and handle async target | |
1226 | events simultaneously. There's also no point either in | |
1227 | having the target stop all threads, when we're going to | |
1228 | pass signals down without informing GDB. */ | |
1229 | if (!non_stop) | |
1230 | { | |
1231 | if (debug_threads) | |
1232 | debug_printf ("Forcing non-stop mode\n"); | |
1233 | ||
3e6ec53a | 1234 | non_stop = true; |
e8ca139e SM |
1235 | start_non_stop (1); |
1236 | } | |
1237 | ||
1238 | process->gdb_detached = 1; | |
1239 | ||
1240 | /* Detaching implicitly resumes all threads. */ | |
1241 | target_continue_no_signal (minus_one_ptid); | |
1242 | ||
1243 | write_ok (own_buf); | |
1244 | return; | |
1245 | } | |
1246 | ||
31445d10 | 1247 | fprintf (stderr, "Detaching from process %d\n", process->pid); |
e8ca139e | 1248 | stop_tracing (); |
d105de22 TT |
1249 | |
1250 | /* We'll need this after PROCESS has been destroyed. */ | |
1251 | int pid = process->pid; | |
1252 | ||
ef2ddb33 | 1253 | if (detach_inferior (process) != 0) |
e8ca139e SM |
1254 | write_enn (own_buf); |
1255 | else | |
1256 | { | |
d105de22 | 1257 | discard_queued_stop_replies (ptid_t (pid)); |
e8ca139e SM |
1258 | write_ok (own_buf); |
1259 | ||
1260 | if (extended_protocol || target_running ()) | |
1261 | { | |
1262 | /* There is still at least one inferior remaining or | |
1263 | we are in extended mode, so don't terminate gdbserver, | |
1264 | and instead treat this like a normal program exit. */ | |
c12a5089 SC |
1265 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
1266 | cs.last_status.value.integer = 0; | |
d105de22 | 1267 | cs.last_ptid = ptid_t (pid); |
e8ca139e SM |
1268 | |
1269 | current_thread = NULL; | |
1270 | } | |
1271 | else | |
1272 | { | |
1273 | putpkt (own_buf); | |
1274 | remote_close (); | |
1275 | ||
1276 | /* If we are attached, then we can exit. Otherwise, we | |
1277 | need to hang around doing nothing, until the child is | |
1278 | gone. */ | |
d105de22 | 1279 | join_inferior (pid); |
e8ca139e SM |
1280 | exit (0); |
1281 | } | |
1282 | } | |
1283 | } | |
1284 | ||
87ce2a04 DE |
1285 | /* Parse options to --debug-format= and "monitor set debug-format". |
1286 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
1287 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
1288 | This triggers calls to monitor_output. | |
e80aaf61 SM |
1289 | The result is an empty string if all options were parsed ok, otherwise an |
1290 | error message which the caller must free. | |
87ce2a04 DE |
1291 | |
1292 | N.B. These commands affect all debug format settings, they are not | |
1293 | cumulative. If a format is not specified, it is turned off. | |
1294 | However, we don't go to extra trouble with things like | |
1295 | "monitor set debug-format all,none,timestamp". | |
1296 | Instead we just parse them one at a time, in order. | |
1297 | ||
1298 | The syntax for "monitor set debug" we support here is not identical | |
1299 | to gdb's "set debug foo on|off" because we also use this function to | |
1300 | parse "--debug-format=foo,bar". */ | |
1301 | ||
2cc05030 | 1302 | static std::string |
87ce2a04 DE |
1303 | parse_debug_format_options (const char *arg, int is_monitor) |
1304 | { | |
87ce2a04 DE |
1305 | /* First turn all debug format options off. */ |
1306 | debug_timestamp = 0; | |
1307 | ||
1308 | /* First remove leading spaces, for "monitor set debug-format". */ | |
1309 | while (isspace (*arg)) | |
1310 | ++arg; | |
1311 | ||
e80aaf61 SM |
1312 | std::vector<gdb::unique_xmalloc_ptr<char>> options |
1313 | = delim_string_to_char_ptr_vec (arg, ','); | |
87ce2a04 | 1314 | |
e80aaf61 | 1315 | for (const gdb::unique_xmalloc_ptr<char> &option : options) |
87ce2a04 | 1316 | { |
e80aaf61 | 1317 | if (strcmp (option.get (), "all") == 0) |
87ce2a04 DE |
1318 | { |
1319 | debug_timestamp = 1; | |
1320 | if (is_monitor) | |
1321 | monitor_output ("All extra debug format options enabled.\n"); | |
1322 | } | |
e80aaf61 | 1323 | else if (strcmp (option.get (), "none") == 0) |
87ce2a04 DE |
1324 | { |
1325 | debug_timestamp = 0; | |
1326 | if (is_monitor) | |
1327 | monitor_output ("All extra debug format options disabled.\n"); | |
1328 | } | |
e80aaf61 | 1329 | else if (strcmp (option.get (), "timestamp") == 0) |
87ce2a04 DE |
1330 | { |
1331 | debug_timestamp = 1; | |
1332 | if (is_monitor) | |
1333 | monitor_output ("Timestamps will be added to debug output.\n"); | |
1334 | } | |
87ce2a04 DE |
1335 | else if (*option == '\0') |
1336 | { | |
1337 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
1338 | continue; | |
1339 | } | |
1340 | else | |
e80aaf61 SM |
1341 | return string_printf ("Unknown debug-format argument: \"%s\"\n", |
1342 | option.get ()); | |
87ce2a04 DE |
1343 | } |
1344 | ||
2cc05030 | 1345 | return std::string (); |
87ce2a04 DE |
1346 | } |
1347 | ||
cdbfd419 PP |
1348 | /* Handle monitor commands not handled by target-specific handlers. */ |
1349 | ||
1350 | static void | |
d73f2619 | 1351 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
1352 | { |
1353 | if (strcmp (mon, "set debug 1") == 0) | |
1354 | { | |
1355 | debug_threads = 1; | |
1356 | monitor_output ("Debug output enabled.\n"); | |
1357 | } | |
1358 | else if (strcmp (mon, "set debug 0") == 0) | |
1359 | { | |
1360 | debug_threads = 0; | |
1361 | monitor_output ("Debug output disabled.\n"); | |
1362 | } | |
1363 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
1364 | { | |
c5e92cca | 1365 | show_debug_regs = 1; |
cdbfd419 PP |
1366 | monitor_output ("H/W point debugging output enabled.\n"); |
1367 | } | |
1368 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1369 | { | |
c5e92cca | 1370 | show_debug_regs = 0; |
cdbfd419 PP |
1371 | monitor_output ("H/W point debugging output disabled.\n"); |
1372 | } | |
1373 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1374 | { | |
1375 | remote_debug = 1; | |
1376 | monitor_output ("Protocol debug output enabled.\n"); | |
1377 | } | |
1378 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1379 | { | |
1380 | remote_debug = 0; | |
1381 | monitor_output ("Protocol debug output disabled.\n"); | |
1382 | } | |
61012eef | 1383 | else if (startswith (mon, "set debug-format ")) |
87ce2a04 | 1384 | { |
2cc05030 | 1385 | std::string error_msg |
87ce2a04 DE |
1386 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, |
1387 | 1); | |
1388 | ||
2cc05030 | 1389 | if (!error_msg.empty ()) |
87ce2a04 | 1390 | { |
2cc05030 | 1391 | monitor_output (error_msg.c_str ()); |
87ce2a04 DE |
1392 | monitor_show_help (); |
1393 | write_enn (own_buf); | |
87ce2a04 DE |
1394 | } |
1395 | } | |
aeb2e706 AH |
1396 | else if (strcmp (mon, "set debug-file") == 0) |
1397 | debug_set_output (nullptr); | |
1398 | else if (startswith (mon, "set debug-file ")) | |
1399 | debug_set_output (mon + sizeof ("set debug-file ") - 1); | |
cdbfd419 PP |
1400 | else if (strcmp (mon, "help") == 0) |
1401 | monitor_show_help (); | |
1402 | else if (strcmp (mon, "exit") == 0) | |
3e6ec53a | 1403 | exit_requested = true; |
cdbfd419 PP |
1404 | else |
1405 | { | |
1406 | monitor_output ("Unknown monitor command.\n\n"); | |
1407 | monitor_show_help (); | |
1408 | write_enn (own_buf); | |
1409 | } | |
1410 | } | |
1411 | ||
d08aafef PA |
1412 | /* Associates a callback with each supported qXfer'able object. */ |
1413 | ||
1414 | struct qxfer | |
1415 | { | |
1416 | /* The object this handler handles. */ | |
1417 | const char *object; | |
1418 | ||
1419 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1420 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1421 | the starting point. The ANNEX can be used to provide additional | |
1422 | data-specific information to the target. | |
1423 | ||
1424 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1425 | further transfer is possible, -1 on error, -2 when the transfer |
1426 | is not supported, and -3 on a verbose error message that should | |
1427 | be preserved. Return of a positive value smaller than LEN does | |
1428 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1429 | |
1430 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1431 | int (*xfer) (const char *annex, | |
1432 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1433 | ULONGEST offset, LONGEST len); | |
1434 | }; | |
1435 | ||
1436 | /* Handle qXfer:auxv:read. */ | |
1437 | ||
1438 | static int | |
1439 | handle_qxfer_auxv (const char *annex, | |
1440 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1441 | ULONGEST offset, LONGEST len) | |
1442 | { | |
1443 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1444 | return -2; | |
1445 | ||
f0db101d | 1446 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1447 | return -1; |
1448 | ||
1449 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1450 | } | |
1451 | ||
e57f1de3 GB |
1452 | /* Handle qXfer:exec-file:read. */ |
1453 | ||
1454 | static int | |
256642e8 | 1455 | handle_qxfer_exec_file (const char *annex, |
e57f1de3 GB |
1456 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1457 | ULONGEST offset, LONGEST len) | |
1458 | { | |
835205d0 | 1459 | char *file; |
e57f1de3 GB |
1460 | ULONGEST pid; |
1461 | int total_len; | |
1462 | ||
1463 | if (the_target->pid_to_exec_file == NULL || writebuf != NULL) | |
1464 | return -2; | |
1465 | ||
256642e8 | 1466 | if (annex[0] == '\0') |
835205d0 GB |
1467 | { |
1468 | if (current_thread == NULL) | |
1469 | return -1; | |
1470 | ||
1471 | pid = pid_of (current_thread); | |
1472 | } | |
1473 | else | |
1474 | { | |
835205d0 | 1475 | annex = unpack_varlen_hex (annex, &pid); |
835205d0 GB |
1476 | if (annex[0] != '\0') |
1477 | return -1; | |
1478 | } | |
1479 | ||
1480 | if (pid <= 0) | |
e57f1de3 GB |
1481 | return -1; |
1482 | ||
1483 | file = (*the_target->pid_to_exec_file) (pid); | |
1484 | if (file == NULL) | |
1485 | return -1; | |
1486 | ||
1487 | total_len = strlen (file); | |
1488 | ||
1489 | if (offset > total_len) | |
1490 | return -1; | |
1491 | ||
1492 | if (offset + len > total_len) | |
1493 | len = total_len - offset; | |
1494 | ||
1495 | memcpy (readbuf, file + offset, len); | |
1496 | return len; | |
1497 | } | |
1498 | ||
d08aafef PA |
1499 | /* Handle qXfer:features:read. */ |
1500 | ||
1501 | static int | |
1502 | handle_qxfer_features (const char *annex, | |
1503 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1504 | ULONGEST offset, LONGEST len) | |
1505 | { | |
1506 | const char *document; | |
1507 | size_t total_len; | |
1508 | ||
1509 | if (writebuf != NULL) | |
1510 | return -2; | |
1511 | ||
1512 | if (!target_running ()) | |
1513 | return -1; | |
1514 | ||
1515 | /* Grab the correct annex. */ | |
1516 | document = get_features_xml (annex); | |
1517 | if (document == NULL) | |
1518 | return -1; | |
1519 | ||
1520 | total_len = strlen (document); | |
1521 | ||
1522 | if (offset > total_len) | |
1523 | return -1; | |
1524 | ||
1525 | if (offset + len > total_len) | |
1526 | len = total_len - offset; | |
1527 | ||
1528 | memcpy (readbuf, document + offset, len); | |
1529 | return len; | |
1530 | } | |
1531 | ||
1532 | /* Handle qXfer:libraries:read. */ | |
1533 | ||
1534 | static int | |
1535 | handle_qxfer_libraries (const char *annex, | |
1536 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1537 | ULONGEST offset, LONGEST len) | |
1538 | { | |
d08aafef PA |
1539 | if (writebuf != NULL) |
1540 | return -2; | |
1541 | ||
f0db101d | 1542 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1543 | return -1; |
1544 | ||
04fd3ba9 | 1545 | std::string document = "<library-list version=\"1.0\">\n"; |
d08aafef | 1546 | |
c9cb8905 SM |
1547 | for (const dll_info &dll : all_dlls) |
1548 | document += string_printf | |
1549 | (" <library name=\"%s\"><segment address=\"0x%lx\"/></library>\n", | |
1550 | dll.name.c_str (), (long) dll.base_addr); | |
d08aafef | 1551 | |
04fd3ba9 | 1552 | document += "</library-list>\n"; |
d08aafef | 1553 | |
04fd3ba9 SM |
1554 | if (offset > document.length ()) |
1555 | return -1; | |
d08aafef | 1556 | |
04fd3ba9 SM |
1557 | if (offset + len > document.length ()) |
1558 | len = document.length () - offset; | |
d08aafef | 1559 | |
04fd3ba9 | 1560 | memcpy (readbuf, &document[offset], len); |
d08aafef | 1561 | |
d08aafef PA |
1562 | return len; |
1563 | } | |
1564 | ||
2268b414 JK |
1565 | /* Handle qXfer:libraries-svr4:read. */ |
1566 | ||
1567 | static int | |
1568 | handle_qxfer_libraries_svr4 (const char *annex, | |
1569 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1570 | ULONGEST offset, LONGEST len) | |
1571 | { | |
1572 | if (writebuf != NULL) | |
1573 | return -2; | |
1574 | ||
f0db101d | 1575 | if (current_thread == NULL || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1576 | return -1; |
1577 | ||
1578 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1579 | } | |
1580 | ||
d08aafef PA |
1581 | /* Handle qXfer:osadata:read. */ |
1582 | ||
1583 | static int | |
1584 | handle_qxfer_osdata (const char *annex, | |
1585 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1586 | ULONGEST offset, LONGEST len) | |
1587 | { | |
1588 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1589 | return -2; | |
1590 | ||
1591 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1592 | } | |
1593 | ||
1594 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1595 | ||
1596 | static int | |
1597 | handle_qxfer_siginfo (const char *annex, | |
1598 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1599 | ULONGEST offset, LONGEST len) | |
1600 | { | |
1601 | if (the_target->qxfer_siginfo == NULL) | |
1602 | return -2; | |
1603 | ||
f0db101d | 1604 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1605 | return -1; |
1606 | ||
1607 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1608 | } | |
1609 | ||
d08aafef PA |
1610 | /* Handle qXfer:statictrace:read. */ |
1611 | ||
1612 | static int | |
1613 | handle_qxfer_statictrace (const char *annex, | |
1614 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1615 | ULONGEST offset, LONGEST len) | |
1616 | { | |
c12a5089 | 1617 | client_state &cs = get_client_state (); |
d08aafef PA |
1618 | ULONGEST nbytes; |
1619 | ||
1620 | if (writebuf != NULL) | |
1621 | return -2; | |
1622 | ||
c12a5089 SC |
1623 | if (annex[0] != '\0' || current_thread == NULL |
1624 | || cs.current_traceframe == -1) | |
d08aafef PA |
1625 | return -1; |
1626 | ||
c12a5089 | 1627 | if (traceframe_read_sdata (cs.current_traceframe, offset, |
d08aafef PA |
1628 | readbuf, len, &nbytes)) |
1629 | return -1; | |
1630 | return nbytes; | |
1631 | } | |
1632 | ||
649ebbca DE |
1633 | /* Helper for handle_qxfer_threads_proper. |
1634 | Emit the XML to describe the thread of INF. */ | |
d08aafef | 1635 | |
dc146f7c | 1636 | static void |
c0e15c9b | 1637 | handle_qxfer_threads_worker (thread_info *thread, struct buffer *buffer) |
dc146f7c | 1638 | { |
124aceb4 | 1639 | ptid_t ptid = ptid_of (thread); |
649ebbca DE |
1640 | char ptid_s[100]; |
1641 | int core = target_core_of_thread (ptid); | |
1642 | char core_s[21]; | |
79efa585 | 1643 | const char *name = target_thread_name (ptid); |
f6327dcb KB |
1644 | int handle_len; |
1645 | gdb_byte *handle; | |
1646 | bool handle_status = target_thread_handle (ptid, &handle, &handle_len); | |
dc146f7c | 1647 | |
649ebbca | 1648 | write_ptid (ptid_s, ptid); |
dc146f7c | 1649 | |
79efa585 SM |
1650 | buffer_xml_printf (buffer, "<thread id=\"%s\"", ptid_s); |
1651 | ||
649ebbca | 1652 | if (core != -1) |
dc146f7c | 1653 | { |
649ebbca | 1654 | sprintf (core_s, "%d", core); |
79efa585 | 1655 | buffer_xml_printf (buffer, " core=\"%s\"", core_s); |
649ebbca | 1656 | } |
79efa585 SM |
1657 | |
1658 | if (name != NULL) | |
1659 | buffer_xml_printf (buffer, " name=\"%s\"", name); | |
1660 | ||
f6327dcb KB |
1661 | if (handle_status) |
1662 | { | |
1663 | char *handle_s = (char *) alloca (handle_len * 2 + 1); | |
1664 | bin2hex (handle, handle_s, handle_len); | |
1665 | buffer_xml_printf (buffer, " handle=\"%s\"", handle_s); | |
1666 | } | |
1667 | ||
79efa585 | 1668 | buffer_xml_printf (buffer, "/>\n"); |
649ebbca | 1669 | } |
dc146f7c | 1670 | |
649ebbca | 1671 | /* Helper for handle_qxfer_threads. */ |
dc146f7c | 1672 | |
649ebbca DE |
1673 | static void |
1674 | handle_qxfer_threads_proper (struct buffer *buffer) | |
1675 | { | |
1676 | buffer_grow_str (buffer, "<threads>\n"); | |
1677 | ||
c0e15c9b SM |
1678 | for_each_thread ([&] (thread_info *thread) |
1679 | { | |
1680 | handle_qxfer_threads_worker (thread, buffer); | |
1681 | }); | |
dc146f7c VP |
1682 | |
1683 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1684 | } | |
1685 | ||
d08aafef PA |
1686 | /* Handle qXfer:threads:read. */ |
1687 | ||
dc146f7c | 1688 | static int |
d08aafef PA |
1689 | handle_qxfer_threads (const char *annex, |
1690 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1691 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1692 | { |
1693 | static char *result = 0; | |
1694 | static unsigned int result_length = 0; | |
1695 | ||
d08aafef PA |
1696 | if (writebuf != NULL) |
1697 | return -2; | |
1698 | ||
f0db101d | 1699 | if (annex[0] != '\0') |
d08aafef | 1700 | return -1; |
dc146f7c VP |
1701 | |
1702 | if (offset == 0) | |
1703 | { | |
1704 | struct buffer buffer; | |
1705 | /* When asked for data at offset 0, generate everything and store into | |
1706 | 'result'. Successive reads will be served off 'result'. */ | |
1707 | if (result) | |
1708 | free (result); | |
1709 | ||
1710 | buffer_init (&buffer); | |
1711 | ||
d08aafef | 1712 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1713 | |
1714 | result = buffer_finish (&buffer); | |
1715 | result_length = strlen (result); | |
1716 | buffer_free (&buffer); | |
1717 | } | |
1718 | ||
1719 | if (offset >= result_length) | |
1720 | { | |
1721 | /* We're out of data. */ | |
1722 | free (result); | |
1723 | result = NULL; | |
1724 | result_length = 0; | |
1725 | return 0; | |
1726 | } | |
1727 | ||
d08aafef PA |
1728 | if (len > result_length - offset) |
1729 | len = result_length - offset; | |
1730 | ||
1731 | memcpy (readbuf, result + offset, len); | |
1732 | ||
1733 | return len; | |
1734 | } | |
1735 | ||
b3b9301e PA |
1736 | /* Handle qXfer:traceframe-info:read. */ |
1737 | ||
1738 | static int | |
1739 | handle_qxfer_traceframe_info (const char *annex, | |
1740 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1741 | ULONGEST offset, LONGEST len) | |
1742 | { | |
c12a5089 | 1743 | client_state &cs = get_client_state (); |
b3b9301e PA |
1744 | static char *result = 0; |
1745 | static unsigned int result_length = 0; | |
1746 | ||
1747 | if (writebuf != NULL) | |
1748 | return -2; | |
1749 | ||
c12a5089 | 1750 | if (!target_running () || annex[0] != '\0' || cs.current_traceframe == -1) |
b3b9301e PA |
1751 | return -1; |
1752 | ||
1753 | if (offset == 0) | |
1754 | { | |
1755 | struct buffer buffer; | |
1756 | ||
1757 | /* When asked for data at offset 0, generate everything and | |
1758 | store into 'result'. Successive reads will be served off | |
1759 | 'result'. */ | |
1760 | free (result); | |
1761 | ||
1762 | buffer_init (&buffer); | |
1763 | ||
c12a5089 | 1764 | traceframe_read_info (cs.current_traceframe, &buffer); |
b3b9301e PA |
1765 | |
1766 | result = buffer_finish (&buffer); | |
1767 | result_length = strlen (result); | |
1768 | buffer_free (&buffer); | |
1769 | } | |
1770 | ||
1771 | if (offset >= result_length) | |
1772 | { | |
1773 | /* We're out of data. */ | |
1774 | free (result); | |
1775 | result = NULL; | |
1776 | result_length = 0; | |
1777 | return 0; | |
1778 | } | |
1779 | ||
1780 | if (len > result_length - offset) | |
1781 | len = result_length - offset; | |
1782 | ||
1783 | memcpy (readbuf, result + offset, len); | |
1784 | return len; | |
1785 | } | |
1786 | ||
78d85199 YQ |
1787 | /* Handle qXfer:fdpic:read. */ |
1788 | ||
1789 | static int | |
1790 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1791 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1792 | { | |
1793 | if (the_target->read_loadmap == NULL) | |
1794 | return -2; | |
1795 | ||
f0db101d | 1796 | if (current_thread == NULL) |
78d85199 YQ |
1797 | return -1; |
1798 | ||
1799 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1800 | } | |
1801 | ||
9accd112 MM |
1802 | /* Handle qXfer:btrace:read. */ |
1803 | ||
1804 | static int | |
1805 | handle_qxfer_btrace (const char *annex, | |
1806 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1807 | ULONGEST offset, LONGEST len) | |
1808 | { | |
c12a5089 | 1809 | client_state &cs = get_client_state (); |
9accd112 MM |
1810 | static struct buffer cache; |
1811 | struct thread_info *thread; | |
add67df8 PA |
1812 | enum btrace_read_type type; |
1813 | int result; | |
9accd112 | 1814 | |
b1223e78 | 1815 | if (writebuf != NULL) |
9accd112 MM |
1816 | return -2; |
1817 | ||
d7e15655 TT |
1818 | if (cs.general_thread == null_ptid |
1819 | || cs.general_thread == minus_one_ptid) | |
9accd112 | 1820 | { |
c12a5089 | 1821 | strcpy (cs.own_buf, "E.Must select a single thread."); |
9accd112 MM |
1822 | return -3; |
1823 | } | |
1824 | ||
c12a5089 | 1825 | thread = find_thread_ptid (cs.general_thread); |
9accd112 MM |
1826 | if (thread == NULL) |
1827 | { | |
c12a5089 | 1828 | strcpy (cs.own_buf, "E.No such thread."); |
9accd112 MM |
1829 | return -3; |
1830 | } | |
1831 | ||
1832 | if (thread->btrace == NULL) | |
1833 | { | |
c12a5089 | 1834 | strcpy (cs.own_buf, "E.Btrace not enabled."); |
9accd112 MM |
1835 | return -3; |
1836 | } | |
1837 | ||
1838 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1839 | type = BTRACE_READ_ALL; |
9accd112 | 1840 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1841 | type = BTRACE_READ_NEW; |
969c39fb MM |
1842 | else if (strcmp (annex, "delta") == 0) |
1843 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1844 | else |
1845 | { | |
c12a5089 | 1846 | strcpy (cs.own_buf, "E.Bad annex."); |
9accd112 MM |
1847 | return -3; |
1848 | } | |
1849 | ||
1850 | if (offset == 0) | |
1851 | { | |
1852 | buffer_free (&cache); | |
1853 | ||
a70b8144 | 1854 | try |
b1223e78 MM |
1855 | { |
1856 | result = target_read_btrace (thread->btrace, &cache, type); | |
1857 | if (result != 0) | |
c12a5089 | 1858 | memcpy (cs.own_buf, cache.buffer, cache.used_size); |
b1223e78 | 1859 | } |
230d2906 | 1860 | catch (const gdb_exception_error &exception) |
969c39fb | 1861 | { |
3d6e9d23 | 1862 | sprintf (cs.own_buf, "E.%s", exception.what ()); |
b1223e78 | 1863 | result = -1; |
969c39fb | 1864 | } |
b1223e78 MM |
1865 | |
1866 | if (result != 0) | |
1867 | return -3; | |
9accd112 MM |
1868 | } |
1869 | else if (offset > cache.used_size) | |
1870 | { | |
1871 | buffer_free (&cache); | |
1872 | return -3; | |
1873 | } | |
1874 | ||
1875 | if (len > cache.used_size - offset) | |
1876 | len = cache.used_size - offset; | |
1877 | ||
1878 | memcpy (readbuf, cache.buffer + offset, len); | |
1879 | ||
1880 | return len; | |
1881 | } | |
1882 | ||
f4abbc16 MM |
1883 | /* Handle qXfer:btrace-conf:read. */ |
1884 | ||
1885 | static int | |
1886 | handle_qxfer_btrace_conf (const char *annex, | |
1887 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1888 | ULONGEST offset, LONGEST len) | |
1889 | { | |
c12a5089 | 1890 | client_state &cs = get_client_state (); |
f4abbc16 MM |
1891 | static struct buffer cache; |
1892 | struct thread_info *thread; | |
1893 | int result; | |
1894 | ||
b1223e78 | 1895 | if (writebuf != NULL) |
f4abbc16 MM |
1896 | return -2; |
1897 | ||
f0db101d | 1898 | if (annex[0] != '\0') |
f4abbc16 MM |
1899 | return -1; |
1900 | ||
d7e15655 TT |
1901 | if (cs.general_thread == null_ptid |
1902 | || cs.general_thread == minus_one_ptid) | |
f4abbc16 | 1903 | { |
c12a5089 | 1904 | strcpy (cs.own_buf, "E.Must select a single thread."); |
f4abbc16 MM |
1905 | return -3; |
1906 | } | |
1907 | ||
c12a5089 | 1908 | thread = find_thread_ptid (cs.general_thread); |
f4abbc16 MM |
1909 | if (thread == NULL) |
1910 | { | |
c12a5089 | 1911 | strcpy (cs.own_buf, "E.No such thread."); |
f4abbc16 MM |
1912 | return -3; |
1913 | } | |
1914 | ||
1915 | if (thread->btrace == NULL) | |
1916 | { | |
c12a5089 | 1917 | strcpy (cs.own_buf, "E.Btrace not enabled."); |
f4abbc16 MM |
1918 | return -3; |
1919 | } | |
1920 | ||
1921 | if (offset == 0) | |
1922 | { | |
1923 | buffer_free (&cache); | |
1924 | ||
a70b8144 | 1925 | try |
b1223e78 MM |
1926 | { |
1927 | result = target_read_btrace_conf (thread->btrace, &cache); | |
1928 | if (result != 0) | |
c12a5089 | 1929 | memcpy (cs.own_buf, cache.buffer, cache.used_size); |
b1223e78 | 1930 | } |
230d2906 | 1931 | catch (const gdb_exception_error &exception) |
f4abbc16 | 1932 | { |
3d6e9d23 | 1933 | sprintf (cs.own_buf, "E.%s", exception.what ()); |
b1223e78 | 1934 | result = -1; |
f4abbc16 | 1935 | } |
b1223e78 MM |
1936 | |
1937 | if (result != 0) | |
1938 | return -3; | |
f4abbc16 MM |
1939 | } |
1940 | else if (offset > cache.used_size) | |
1941 | { | |
1942 | buffer_free (&cache); | |
1943 | return -3; | |
1944 | } | |
1945 | ||
1946 | if (len > cache.used_size - offset) | |
1947 | len = cache.used_size - offset; | |
1948 | ||
1949 | memcpy (readbuf, cache.buffer + offset, len); | |
1950 | ||
1951 | return len; | |
1952 | } | |
1953 | ||
d08aafef PA |
1954 | static const struct qxfer qxfer_packets[] = |
1955 | { | |
1956 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1957 | { "btrace", handle_qxfer_btrace }, |
f4abbc16 | 1958 | { "btrace-conf", handle_qxfer_btrace_conf }, |
e57f1de3 | 1959 | { "exec-file", handle_qxfer_exec_file}, |
78d85199 | 1960 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1961 | { "features", handle_qxfer_features }, |
1962 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1963 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1964 | { "osdata", handle_qxfer_osdata }, |
1965 | { "siginfo", handle_qxfer_siginfo }, | |
d08aafef PA |
1966 | { "statictrace", handle_qxfer_statictrace }, |
1967 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1968 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1969 | }; |
1970 | ||
1971 | static int | |
1972 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1973 | { | |
1974 | int i; | |
1975 | char *object; | |
1976 | char *rw; | |
1977 | char *annex; | |
1978 | char *offset; | |
1979 | ||
61012eef | 1980 | if (!startswith (own_buf, "qXfer:")) |
d08aafef PA |
1981 | return 0; |
1982 | ||
1983 | /* Grab the object, r/w and annex. */ | |
1984 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1985 | { | |
1986 | write_enn (own_buf); | |
1987 | return 1; | |
1988 | } | |
1989 | ||
1990 | for (i = 0; | |
1991 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1992 | i++) | |
1993 | { | |
1994 | const struct qxfer *q = &qxfer_packets[i]; | |
1995 | ||
1996 | if (strcmp (object, q->object) == 0) | |
1997 | { | |
1998 | if (strcmp (rw, "read") == 0) | |
1999 | { | |
2000 | unsigned char *data; | |
2001 | int n; | |
2002 | CORE_ADDR ofs; | |
2003 | unsigned int len; | |
2004 | ||
2005 | /* Grab the offset and length. */ | |
2006 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
2007 | { | |
2008 | write_enn (own_buf); | |
2009 | return 1; | |
2010 | } | |
2011 | ||
2012 | /* Read one extra byte, as an indicator of whether there is | |
2013 | more. */ | |
2014 | if (len > PBUFSIZ - 2) | |
2015 | len = PBUFSIZ - 2; | |
224c3ddb | 2016 | data = (unsigned char *) malloc (len + 1); |
d08aafef PA |
2017 | if (data == NULL) |
2018 | { | |
2019 | write_enn (own_buf); | |
2020 | return 1; | |
2021 | } | |
2022 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
2023 | if (n == -2) | |
2024 | { | |
2025 | free (data); | |
2026 | return 0; | |
2027 | } | |
5cc22e4c MM |
2028 | else if (n == -3) |
2029 | { | |
2030 | /* Preserve error message. */ | |
2031 | } | |
d08aafef PA |
2032 | else if (n < 0) |
2033 | write_enn (own_buf); | |
2034 | else if (n > len) | |
2035 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
2036 | else | |
2037 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
2038 | ||
2039 | free (data); | |
2040 | return 1; | |
2041 | } | |
2042 | else if (strcmp (rw, "write") == 0) | |
2043 | { | |
2044 | int n; | |
2045 | unsigned int len; | |
2046 | CORE_ADDR ofs; | |
2047 | unsigned char *data; | |
2048 | ||
2049 | strcpy (own_buf, "E00"); | |
224c3ddb | 2050 | data = (unsigned char *) malloc (packet_len - (offset - own_buf)); |
d08aafef PA |
2051 | if (data == NULL) |
2052 | { | |
2053 | write_enn (own_buf); | |
2054 | return 1; | |
2055 | } | |
2056 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
2057 | &ofs, &len, data) < 0) | |
2058 | { | |
2059 | free (data); | |
2060 | write_enn (own_buf); | |
2061 | return 1; | |
2062 | } | |
2063 | ||
2064 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
2065 | if (n == -2) | |
2066 | { | |
2067 | free (data); | |
2068 | return 0; | |
2069 | } | |
5cc22e4c MM |
2070 | else if (n == -3) |
2071 | { | |
2072 | /* Preserve error message. */ | |
2073 | } | |
d08aafef PA |
2074 | else if (n < 0) |
2075 | write_enn (own_buf); | |
2076 | else | |
2077 | sprintf (own_buf, "%x", n); | |
dc146f7c | 2078 | |
d08aafef PA |
2079 | free (data); |
2080 | return 1; | |
2081 | } | |
dc146f7c | 2082 | |
d08aafef PA |
2083 | return 0; |
2084 | } | |
2085 | } | |
dc146f7c | 2086 | |
d08aafef | 2087 | return 0; |
dc146f7c VP |
2088 | } |
2089 | ||
30ba68cb MS |
2090 | /* Compute 32 bit CRC from inferior memory. |
2091 | ||
2092 | On success, return 32 bit CRC. | |
2093 | On failure, return (unsigned long long) -1. */ | |
2094 | ||
2095 | static unsigned long long | |
2096 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
2097 | { | |
30ba68cb MS |
2098 | while (len--) |
2099 | { | |
2100 | unsigned char byte = 0; | |
2101 | ||
2102 | /* Return failure if memory read fails. */ | |
2103 | if (read_inferior_memory (base, &byte, 1) != 0) | |
2104 | return (unsigned long long) -1; | |
2105 | ||
65da7f14 | 2106 | crc = xcrc32 (&byte, 1, crc); |
30ba68cb MS |
2107 | base++; |
2108 | } | |
2109 | return (unsigned long long) crc; | |
2110 | } | |
2111 | ||
043c3577 MM |
2112 | /* Add supported btrace packets to BUF. */ |
2113 | ||
2114 | static void | |
2115 | supported_btrace_packets (char *buf) | |
2116 | { | |
de6242d3 MM |
2117 | strcat (buf, ";Qbtrace:bts+"); |
2118 | strcat (buf, ";Qbtrace-conf:bts:size+"); | |
2119 | strcat (buf, ";Qbtrace:pt+"); | |
2120 | strcat (buf, ";Qbtrace-conf:pt:size+"); | |
043c3577 MM |
2121 | strcat (buf, ";Qbtrace:off+"); |
2122 | strcat (buf, ";qXfer:btrace:read+"); | |
f4abbc16 | 2123 | strcat (buf, ";qXfer:btrace-conf:read+"); |
043c3577 MM |
2124 | } |
2125 | ||
ce3a066d | 2126 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 2127 | |
5b3da067 | 2128 | static void |
0e7f50da | 2129 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 2130 | { |
c12a5089 | 2131 | client_state &cs = get_client_state (); |
9c80ecd6 | 2132 | static std::list<thread_info *>::const_iterator thread_iter; |
0d62e5e8 | 2133 | |
bb63802a | 2134 | /* Reply the current thread id. */ |
db42f210 | 2135 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 2136 | { |
124aceb4 | 2137 | ptid_t ptid; |
f8a4e119 | 2138 | require_running_or_return (own_buf); |
bd99dc85 | 2139 | |
c12a5089 SC |
2140 | if (cs.general_thread != null_ptid && cs.general_thread != minus_one_ptid) |
2141 | ptid = cs.general_thread; | |
bd99dc85 PA |
2142 | else |
2143 | { | |
9c80ecd6 SM |
2144 | thread_iter = all_threads.begin (); |
2145 | ptid = (*thread_iter)->id; | |
bd99dc85 PA |
2146 | } |
2147 | ||
95954743 PA |
2148 | sprintf (own_buf, "QC"); |
2149 | own_buf += 2; | |
124aceb4 | 2150 | write_ptid (own_buf, ptid); |
bb63802a UW |
2151 | return; |
2152 | } | |
2153 | ||
ce3a066d DJ |
2154 | if (strcmp ("qSymbol::", own_buf) == 0) |
2155 | { | |
34c65914 PA |
2156 | struct thread_info *save_thread = current_thread; |
2157 | ||
2158 | /* For qSymbol, GDB only changes the current thread if the | |
2159 | previous current thread was of a different process. So if | |
2160 | the previous thread is gone, we need to pick another one of | |
2161 | the same process. This can happen e.g., if we followed an | |
2162 | exec in a non-leader thread. */ | |
2163 | if (current_thread == NULL) | |
2164 | { | |
2165 | current_thread | |
e99b03dc | 2166 | = find_any_thread_of_pid (cs.general_thread.pid ()); |
34c65914 PA |
2167 | |
2168 | /* Just in case, if we didn't find a thread, then bail out | |
2169 | instead of crashing. */ | |
2170 | if (current_thread == NULL) | |
2171 | { | |
2172 | write_enn (own_buf); | |
2173 | current_thread = save_thread; | |
2174 | return; | |
2175 | } | |
2176 | } | |
2177 | ||
d3bbe7a0 PA |
2178 | /* GDB is suggesting new symbols have been loaded. This may |
2179 | mean a new shared library has been detected as loaded, so | |
2180 | take the opportunity to check if breakpoints we think are | |
2181 | inserted, still are. Note that it isn't guaranteed that | |
2182 | we'll see this when a shared library is loaded, and nor will | |
2183 | we see this for unloads (although breakpoints in unloaded | |
2184 | libraries shouldn't trigger), as GDB may not find symbols for | |
2185 | the library at all. We also re-validate breakpoints when we | |
2186 | see a second GDB breakpoint for the same address, and or when | |
2187 | we access breakpoint shadows. */ | |
2188 | validate_breakpoints (); | |
2189 | ||
fa593d66 PA |
2190 | if (target_supports_tracepoints ()) |
2191 | tracepoint_look_up_symbols (); | |
2192 | ||
f0db101d | 2193 | if (current_thread != NULL && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
2194 | (*the_target->look_up_symbols) (); |
2195 | ||
34c65914 PA |
2196 | current_thread = save_thread; |
2197 | ||
ce3a066d DJ |
2198 | strcpy (own_buf, "OK"); |
2199 | return; | |
2200 | } | |
2201 | ||
db42f210 | 2202 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 2203 | { |
db42f210 | 2204 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 2205 | { |
f8a4e119 | 2206 | require_running_or_return (own_buf); |
9c80ecd6 | 2207 | thread_iter = all_threads.begin (); |
95954743 PA |
2208 | |
2209 | *own_buf++ = 'm'; | |
9c80ecd6 SM |
2210 | ptid_t ptid = (*thread_iter)->id; |
2211 | write_ptid (own_buf, ptid); | |
2212 | thread_iter++; | |
0d62e5e8 DJ |
2213 | return; |
2214 | } | |
db42f210 PA |
2215 | |
2216 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 2217 | { |
f8a4e119 | 2218 | require_running_or_return (own_buf); |
9c80ecd6 | 2219 | if (thread_iter != all_threads.end ()) |
db42f210 | 2220 | { |
95954743 | 2221 | *own_buf++ = 'm'; |
9c80ecd6 SM |
2222 | ptid_t ptid = (*thread_iter)->id; |
2223 | write_ptid (own_buf, ptid); | |
2224 | thread_iter++; | |
db42f210 PA |
2225 | return; |
2226 | } | |
2227 | else | |
2228 | { | |
2229 | sprintf (own_buf, "l"); | |
2230 | return; | |
2231 | } | |
0d62e5e8 DJ |
2232 | } |
2233 | } | |
aa691b87 | 2234 | |
52fb6437 NS |
2235 | if (the_target->read_offsets != NULL |
2236 | && strcmp ("qOffsets", own_buf) == 0) | |
2237 | { | |
2238 | CORE_ADDR text, data; | |
2d717e4f | 2239 | |
f8a4e119 | 2240 | require_running_or_return (own_buf); |
52fb6437 NS |
2241 | if (the_target->read_offsets (&text, &data)) |
2242 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
2243 | (long)text, (long)data, (long)data); | |
2244 | else | |
2245 | write_enn (own_buf); | |
1b3f6016 | 2246 | |
52fb6437 NS |
2247 | return; |
2248 | } | |
2249 | ||
be2a5f71 | 2250 | /* Protocol features query. */ |
61012eef | 2251 | if (startswith (own_buf, "qSupported") |
be2a5f71 DJ |
2252 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
2253 | { | |
95954743 | 2254 | char *p = &own_buf[10]; |
fa593d66 | 2255 | int gdb_supports_qRelocInsn = 0; |
95954743 PA |
2256 | |
2257 | /* Process each feature being provided by GDB. The first | |
2258 | feature will follow a ':', and latter features will follow | |
2259 | ';'. */ | |
2260 | if (*p == ':') | |
d149dd1d PA |
2261 | { |
2262 | char **qsupported = NULL; | |
2263 | int count = 0; | |
06e03fff | 2264 | int unknown = 0; |
d149dd1d PA |
2265 | int i; |
2266 | ||
2267 | /* Two passes, to avoid nested strtok calls in | |
2268 | target_process_qsupported. */ | |
2269 | for (p = strtok (p + 1, ";"); | |
2270 | p != NULL; | |
2271 | p = strtok (NULL, ";")) | |
2272 | { | |
2273 | count++; | |
224c3ddb | 2274 | qsupported = XRESIZEVEC (char *, qsupported, count); |
d149dd1d PA |
2275 | qsupported[count - 1] = xstrdup (p); |
2276 | } | |
2277 | ||
2278 | for (i = 0; i < count; i++) | |
2279 | { | |
2280 | p = qsupported[i]; | |
2281 | if (strcmp (p, "multiprocess+") == 0) | |
2282 | { | |
2283 | /* GDB supports and wants multi-process support if | |
2284 | possible. */ | |
2285 | if (target_supports_multi_process ()) | |
c12a5089 | 2286 | cs.multi_process = 1; |
d149dd1d | 2287 | } |
fa593d66 PA |
2288 | else if (strcmp (p, "qRelocInsn+") == 0) |
2289 | { | |
2290 | /* GDB supports relocate instruction requests. */ | |
2291 | gdb_supports_qRelocInsn = 1; | |
2292 | } | |
1ec68e26 PA |
2293 | else if (strcmp (p, "swbreak+") == 0) |
2294 | { | |
2295 | /* GDB wants us to report whether a trap is caused | |
2296 | by a software breakpoint and for us to handle PC | |
2297 | adjustment if necessary on this target. */ | |
2298 | if (target_supports_stopped_by_sw_breakpoint ()) | |
c12a5089 | 2299 | cs.swbreak_feature = 1; |
1ec68e26 PA |
2300 | } |
2301 | else if (strcmp (p, "hwbreak+") == 0) | |
2302 | { | |
2303 | /* GDB wants us to report whether a trap is caused | |
2304 | by a hardware breakpoint. */ | |
2305 | if (target_supports_stopped_by_hw_breakpoint ()) | |
c12a5089 | 2306 | cs.hwbreak_feature = 1; |
1ec68e26 | 2307 | } |
89245bc0 DB |
2308 | else if (strcmp (p, "fork-events+") == 0) |
2309 | { | |
2310 | /* GDB supports and wants fork events if possible. */ | |
2311 | if (target_supports_fork_events ()) | |
c12a5089 | 2312 | cs.report_fork_events = 1; |
89245bc0 DB |
2313 | } |
2314 | else if (strcmp (p, "vfork-events+") == 0) | |
2315 | { | |
2316 | /* GDB supports and wants vfork events if possible. */ | |
2317 | if (target_supports_vfork_events ()) | |
c12a5089 | 2318 | cs.report_vfork_events = 1; |
89245bc0 | 2319 | } |
7c5d0fad | 2320 | else if (strcmp (p, "exec-events+") == 0) |
94585166 DB |
2321 | { |
2322 | /* GDB supports and wants exec events if possible. */ | |
2323 | if (target_supports_exec_events ()) | |
c12a5089 | 2324 | cs.report_exec_events = 1; |
94585166 | 2325 | } |
750ce8d1 | 2326 | else if (strcmp (p, "vContSupported+") == 0) |
c12a5089 | 2327 | cs.vCont_supported = 1; |
65706a29 PA |
2328 | else if (strcmp (p, "QThreadEvents+") == 0) |
2329 | ; | |
f2faf941 PA |
2330 | else if (strcmp (p, "no-resumed+") == 0) |
2331 | { | |
2332 | /* GDB supports and wants TARGET_WAITKIND_NO_RESUMED | |
2333 | events. */ | |
3e6ec53a | 2334 | report_no_resumed = true; |
f2faf941 | 2335 | } |
d149dd1d | 2336 | else |
06e03fff PA |
2337 | { |
2338 | /* Move the unknown features all together. */ | |
2339 | qsupported[i] = NULL; | |
2340 | qsupported[unknown] = p; | |
2341 | unknown++; | |
2342 | } | |
d149dd1d PA |
2343 | } |
2344 | ||
06e03fff PA |
2345 | /* Give the target backend a chance to process the unknown |
2346 | features. */ | |
2347 | target_process_qsupported (qsupported, unknown); | |
2348 | ||
2349 | for (i = 0; i < count; i++) | |
2350 | free (qsupported[i]); | |
d149dd1d PA |
2351 | free (qsupported); |
2352 | } | |
95954743 | 2353 | |
9b224c5e | 2354 | sprintf (own_buf, |
0a2dde4a SDJ |
2355 | "PacketSize=%x;QPassSignals+;QProgramSignals+;" |
2356 | "QStartupWithShell+;QEnvironmentHexEncoded+;" | |
bc3b087d SDJ |
2357 | "QEnvironmentReset+;QEnvironmentUnset+;" |
2358 | "QSetWorkingDir+", | |
9b224c5e | 2359 | PBUFSIZ - 1); |
0876f84a | 2360 | |
82075af2 JS |
2361 | if (target_supports_catch_syscall ()) |
2362 | strcat (own_buf, ";QCatchSyscalls+"); | |
2363 | ||
2268b414 | 2364 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
2365 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
2366 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
2367 | else |
2368 | { | |
2369 | /* We do not have any hook to indicate whether the non-SVR4 target | |
2370 | backend supports qXfer:libraries:read, so always report it. */ | |
2371 | strcat (own_buf, ";qXfer:libraries:read+"); | |
2372 | } | |
255e7678 | 2373 | |
0876f84a | 2374 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 2375 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 2376 | |
4aa995e1 PA |
2377 | if (the_target->qxfer_siginfo != NULL) |
2378 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
2379 | ||
78d85199 YQ |
2380 | if (the_target->read_loadmap != NULL) |
2381 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
2382 | ||
221c031f UW |
2383 | /* We always report qXfer:features:read, as targets may |
2384 | install XML files on a subsequent call to arch_setup. | |
2385 | If we reported to GDB on startup that we don't support | |
2386 | qXfer:feature:read at all, we will never be re-queried. */ | |
2387 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 2388 | |
c12a5089 | 2389 | if (cs.transport_is_reliable) |
a6f3e723 | 2390 | strcat (own_buf, ";QStartNoAckMode+"); |
07e059b5 VP |
2391 | |
2392 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 2393 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 2394 | |
cf8fd78b PA |
2395 | if (target_supports_multi_process ()) |
2396 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 2397 | |
89245bc0 DB |
2398 | if (target_supports_fork_events ()) |
2399 | strcat (own_buf, ";fork-events+"); | |
2400 | ||
2401 | if (target_supports_vfork_events ()) | |
2402 | strcat (own_buf, ";vfork-events+"); | |
2403 | ||
94585166 DB |
2404 | if (target_supports_exec_events ()) |
2405 | strcat (own_buf, ";exec-events+"); | |
2406 | ||
bd99dc85 PA |
2407 | if (target_supports_non_stop ()) |
2408 | strcat (own_buf, ";QNonStop+"); | |
2409 | ||
03583c20 UW |
2410 | if (target_supports_disable_randomization ()) |
2411 | strcat (own_buf, ";QDisableRandomization+"); | |
2412 | ||
dc146f7c VP |
2413 | strcat (own_buf, ";qXfer:threads:read+"); |
2414 | ||
219f2f23 PA |
2415 | if (target_supports_tracepoints ()) |
2416 | { | |
2417 | strcat (own_buf, ";ConditionalTracepoints+"); | |
2418 | strcat (own_buf, ";TraceStateVariables+"); | |
2419 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 2420 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
2421 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
2422 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 2423 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 2424 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 2425 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 2426 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 2427 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 2428 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 2429 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
2430 | } |
2431 | ||
bd2b2909 AT |
2432 | if (target_supports_hardware_single_step () |
2433 | || target_supports_software_single_step () ) | |
70b90b91 | 2434 | { |
70b90b91 YQ |
2435 | strcat (own_buf, ";ConditionalBreakpoints+"); |
2436 | } | |
d3ce09f5 | 2437 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 2438 | |
d1feda86 YQ |
2439 | if (target_supports_agent ()) |
2440 | strcat (own_buf, ";QAgent+"); | |
2441 | ||
043c3577 | 2442 | supported_btrace_packets (own_buf); |
9accd112 | 2443 | |
1ec68e26 PA |
2444 | if (target_supports_stopped_by_sw_breakpoint ()) |
2445 | strcat (own_buf, ";swbreak+"); | |
2446 | ||
2447 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2448 | strcat (own_buf, ";hwbreak+"); | |
2449 | ||
e57f1de3 GB |
2450 | if (the_target->pid_to_exec_file != NULL) |
2451 | strcat (own_buf, ";qXfer:exec-file:read+"); | |
2452 | ||
750ce8d1 YQ |
2453 | strcat (own_buf, ";vContSupported+"); |
2454 | ||
65706a29 PA |
2455 | strcat (own_buf, ";QThreadEvents+"); |
2456 | ||
f2faf941 PA |
2457 | strcat (own_buf, ";no-resumed+"); |
2458 | ||
14d2069a GB |
2459 | /* Reinitialize components as needed for the new connection. */ |
2460 | hostio_handle_new_gdb_connection (); | |
de0d863e DB |
2461 | target_handle_new_gdb_connection (); |
2462 | ||
be2a5f71 DJ |
2463 | return; |
2464 | } | |
2465 | ||
dae5f5cf DJ |
2466 | /* Thread-local storage support. */ |
2467 | if (the_target->get_tls_address != NULL | |
61012eef | 2468 | && startswith (own_buf, "qGetTLSAddr:")) |
dae5f5cf DJ |
2469 | { |
2470 | char *p = own_buf + 12; | |
5b1c542e | 2471 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 2472 | int i, err; |
95954743 | 2473 | ptid_t ptid = null_ptid; |
dae5f5cf | 2474 | |
f8a4e119 | 2475 | require_running_or_return (own_buf); |
2d717e4f | 2476 | |
dae5f5cf DJ |
2477 | for (i = 0; i < 3; i++) |
2478 | { | |
2479 | char *p2; | |
2480 | int len; | |
2481 | ||
2482 | if (p == NULL) | |
2483 | break; | |
2484 | ||
2485 | p2 = strchr (p, ','); | |
2486 | if (p2) | |
2487 | { | |
2488 | len = p2 - p; | |
2489 | p2++; | |
2490 | } | |
2491 | else | |
2492 | { | |
2493 | len = strlen (p); | |
2494 | p2 = NULL; | |
2495 | } | |
2496 | ||
5b1c542e | 2497 | if (i == 0) |
95954743 | 2498 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
2499 | else |
2500 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
2501 | p = p2; |
2502 | } | |
2503 | ||
2504 | if (p != NULL || i < 3) | |
2505 | err = 1; | |
2506 | else | |
2507 | { | |
e09875d4 | 2508 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
2509 | |
2510 | if (thread == NULL) | |
2511 | err = 2; | |
2512 | else | |
5b1c542e | 2513 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
2514 | &address); |
2515 | } | |
2516 | ||
2517 | if (err == 0) | |
2518 | { | |
c6f46ca0 | 2519 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
2520 | return; |
2521 | } | |
2522 | else if (err > 0) | |
2523 | { | |
2524 | write_enn (own_buf); | |
2525 | return; | |
2526 | } | |
2527 | ||
2528 | /* Otherwise, pretend we do not understand this packet. */ | |
2529 | } | |
2530 | ||
711e434b PM |
2531 | /* Windows OS Thread Information Block address support. */ |
2532 | if (the_target->get_tib_address != NULL | |
61012eef | 2533 | && startswith (own_buf, "qGetTIBAddr:")) |
711e434b | 2534 | { |
256642e8 | 2535 | const char *annex; |
711e434b PM |
2536 | int n; |
2537 | CORE_ADDR tlb; | |
2538 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2539 | ||
2540 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
2541 | if (n == 1) | |
2542 | { | |
c6f46ca0 | 2543 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2544 | return; |
2545 | } | |
2546 | else if (n == 0) | |
2547 | { | |
2548 | write_enn (own_buf); | |
2549 | return; | |
2550 | } | |
2551 | return; | |
2552 | } | |
2553 | ||
c74d0ad8 | 2554 | /* Handle "monitor" commands. */ |
61012eef | 2555 | if (startswith (own_buf, "qRcmd,")) |
c74d0ad8 | 2556 | { |
224c3ddb | 2557 | char *mon = (char *) malloc (PBUFSIZ); |
c74d0ad8 DJ |
2558 | int len = strlen (own_buf + 6); |
2559 | ||
aef93bd7 DE |
2560 | if (mon == NULL) |
2561 | { | |
2562 | write_enn (own_buf); | |
2563 | return; | |
2564 | } | |
2565 | ||
ff0e980e TT |
2566 | if ((len % 2) != 0 |
2567 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2568 | { |
2569 | write_enn (own_buf); | |
2570 | free (mon); | |
2571 | return; | |
2572 | } | |
2573 | mon[len / 2] = '\0'; | |
2574 | ||
2575 | write_ok (own_buf); | |
2576 | ||
cdbfd419 PP |
2577 | if (the_target->handle_monitor_command == NULL |
2578 | || (*the_target->handle_monitor_command) (mon) == 0) | |
2579 | /* Default processing. */ | |
d73f2619 | 2580 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2581 | |
2582 | free (mon); | |
2583 | return; | |
2584 | } | |
2585 | ||
61012eef | 2586 | if (startswith (own_buf, "qSearch:memory:")) |
08388c79 | 2587 | { |
f8a4e119 | 2588 | require_running_or_return (own_buf); |
08388c79 DE |
2589 | handle_search_memory (own_buf, packet_len); |
2590 | return; | |
2591 | } | |
2592 | ||
95954743 | 2593 | if (strcmp (own_buf, "qAttached") == 0 |
61012eef | 2594 | || startswith (own_buf, "qAttached:")) |
0b16c5cf | 2595 | { |
95954743 PA |
2596 | struct process_info *process; |
2597 | ||
2598 | if (own_buf[sizeof ("qAttached") - 1]) | |
2599 | { | |
2600 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
9179355e | 2601 | process = find_process_pid (pid); |
95954743 PA |
2602 | } |
2603 | else | |
2604 | { | |
f8a4e119 | 2605 | require_running_or_return (own_buf); |
95954743 PA |
2606 | process = current_process (); |
2607 | } | |
2608 | ||
2609 | if (process == NULL) | |
2610 | { | |
2611 | write_enn (own_buf); | |
2612 | return; | |
2613 | } | |
2614 | ||
2615 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2616 | return; |
2617 | } | |
2618 | ||
61012eef | 2619 | if (startswith (own_buf, "qCRC:")) |
30ba68cb MS |
2620 | { |
2621 | /* CRC check (compare-section). */ | |
256642e8 | 2622 | const char *comma; |
aca22551 | 2623 | ULONGEST base; |
30ba68cb MS |
2624 | int len; |
2625 | unsigned long long crc; | |
2626 | ||
f8a4e119 | 2627 | require_running_or_return (own_buf); |
aca22551 | 2628 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2629 | if (*comma++ != ',') |
2630 | { | |
2631 | write_enn (own_buf); | |
2632 | return; | |
2633 | } | |
2634 | len = strtoul (comma, NULL, 16); | |
2635 | crc = crc32 (base, len, 0xffffffff); | |
2636 | /* Check for memory failure. */ | |
2637 | if (crc == (unsigned long long) -1) | |
2638 | { | |
2639 | write_enn (own_buf); | |
2640 | return; | |
2641 | } | |
2642 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2643 | return; | |
2644 | } | |
2645 | ||
d08aafef PA |
2646 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2647 | return; | |
2648 | ||
219f2f23 PA |
2649 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2650 | return; | |
2651 | ||
ce3a066d DJ |
2652 | /* Otherwise we didn't know what packet it was. Say we didn't |
2653 | understand it. */ | |
2654 | own_buf[0] = 0; | |
2655 | } | |
2656 | ||
ce1a5b52 | 2657 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2658 | static void resume (struct thread_resume *actions, size_t n); |
2659 | ||
649ebbca DE |
2660 | /* The callback that is passed to visit_actioned_threads. */ |
2661 | typedef int (visit_actioned_threads_callback_ftype) | |
2662 | (const struct thread_resume *, struct thread_info *); | |
2663 | ||
b7ea362b PA |
2664 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2665 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca | 2666 | is found or CALLBACK results false. |
eaddb425 | 2667 | Note: This function is itself a callback for find_thread. */ |
b7ea362b | 2668 | |
eaddb425 SM |
2669 | static bool |
2670 | visit_actioned_threads (thread_info *thread, | |
2671 | const struct thread_resume *actions, | |
2672 | size_t num_actions, | |
2673 | visit_actioned_threads_callback_ftype *callback) | |
b7ea362b | 2674 | { |
eaddb425 | 2675 | for (size_t i = 0; i < num_actions; i++) |
b7ea362b | 2676 | { |
649ebbca | 2677 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2678 | |
d7e15655 TT |
2679 | if (action->thread == minus_one_ptid |
2680 | || action->thread == thread->id | |
e99b03dc | 2681 | || ((action->thread.pid () |
9c80ecd6 | 2682 | == thread->id.pid ()) |
e38504b3 | 2683 | && action->thread.lwp () == -1)) |
b7ea362b | 2684 | { |
649ebbca | 2685 | if ((*callback) (action, thread)) |
eaddb425 | 2686 | return true; |
b7ea362b PA |
2687 | } |
2688 | } | |
2689 | ||
eaddb425 | 2690 | return false; |
b7ea362b PA |
2691 | } |
2692 | ||
2693 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2694 | status to report, report it now. */ | |
2695 | ||
2696 | static int | |
2697 | handle_pending_status (const struct thread_resume *resumption, | |
2698 | struct thread_info *thread) | |
2699 | { | |
c12a5089 | 2700 | client_state &cs = get_client_state (); |
b7ea362b PA |
2701 | if (thread->status_pending_p) |
2702 | { | |
2703 | thread->status_pending_p = 0; | |
2704 | ||
c12a5089 SC |
2705 | cs.last_status = thread->last_status; |
2706 | cs.last_ptid = thread->id; | |
2707 | prepare_resume_reply (cs.own_buf, cs.last_ptid, &cs.last_status); | |
b7ea362b PA |
2708 | return 1; |
2709 | } | |
2710 | return 0; | |
2711 | } | |
ce1a5b52 | 2712 | |
64386c31 | 2713 | /* Parse vCont packets. */ |
5b3da067 | 2714 | static void |
5b1c542e | 2715 | handle_v_cont (char *own_buf) |
64386c31 | 2716 | { |
256642e8 | 2717 | const char *p; |
64386c31 | 2718 | int n = 0, i = 0; |
2bd7c093 | 2719 | struct thread_resume *resume_info; |
436252de | 2720 | struct thread_resume default_action { null_ptid }; |
64386c31 DJ |
2721 | |
2722 | /* Count the number of semicolons in the packet. There should be one | |
2723 | for every action. */ | |
2724 | p = &own_buf[5]; | |
2725 | while (p) | |
2726 | { | |
2727 | n++; | |
2728 | p++; | |
2729 | p = strchr (p, ';'); | |
2730 | } | |
2bd7c093 | 2731 | |
224c3ddb | 2732 | resume_info = (struct thread_resume *) malloc (n * sizeof (resume_info[0])); |
aef93bd7 DE |
2733 | if (resume_info == NULL) |
2734 | goto err; | |
64386c31 | 2735 | |
64386c31 | 2736 | p = &own_buf[5]; |
64386c31 DJ |
2737 | while (*p) |
2738 | { | |
2739 | p++; | |
2740 | ||
c2d6af84 PA |
2741 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2742 | ||
64386c31 | 2743 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2744 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2745 | else if (p[0] == 'r') |
2746 | resume_info[i].kind = resume_step; | |
64386c31 | 2747 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2748 | resume_info[i].kind = resume_continue; |
2749 | else if (p[0] == 't') | |
2750 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2751 | else |
2752 | goto err; | |
2753 | ||
2754 | if (p[0] == 'S' || p[0] == 'C') | |
2755 | { | |
256642e8 PA |
2756 | char *q; |
2757 | int sig = strtol (p + 1, &q, 16); | |
64386c31 DJ |
2758 | if (p == q) |
2759 | goto err; | |
2760 | p = q; | |
2761 | ||
e053fbc4 | 2762 | if (!gdb_signal_to_host_p ((enum gdb_signal) sig)) |
64386c31 | 2763 | goto err; |
e053fbc4 | 2764 | resume_info[i].sig = gdb_signal_to_host ((enum gdb_signal) sig); |
64386c31 | 2765 | } |
c2d6af84 PA |
2766 | else if (p[0] == 'r') |
2767 | { | |
6740dc9c | 2768 | ULONGEST addr; |
c2d6af84 | 2769 | |
6740dc9c PA |
2770 | p = unpack_varlen_hex (p + 1, &addr); |
2771 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2772 | |
6740dc9c PA |
2773 | if (*p != ',') |
2774 | goto err; | |
c2d6af84 | 2775 | |
6740dc9c PA |
2776 | p = unpack_varlen_hex (p + 1, &addr); |
2777 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2778 | } |
64386c31 DJ |
2779 | else |
2780 | { | |
64386c31 DJ |
2781 | p = p + 1; |
2782 | } | |
2783 | ||
2784 | if (p[0] == 0) | |
2785 | { | |
95954743 | 2786 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2787 | default_action = resume_info[i]; |
2788 | ||
2789 | /* Note: we don't increment i here, we'll overwrite this entry | |
2790 | the next time through. */ | |
2791 | } | |
2792 | else if (p[0] == ':') | |
2793 | { | |
256642e8 | 2794 | const char *q; |
95954743 | 2795 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2796 | |
64386c31 DJ |
2797 | if (p == q) |
2798 | goto err; | |
2799 | p = q; | |
2800 | if (p[0] != ';' && p[0] != 0) | |
2801 | goto err; | |
2802 | ||
95954743 | 2803 | resume_info[i].thread = ptid; |
a06660f7 | 2804 | |
64386c31 DJ |
2805 | i++; |
2806 | } | |
2807 | } | |
2808 | ||
2bd7c093 PA |
2809 | if (i < n) |
2810 | resume_info[i] = default_action; | |
64386c31 | 2811 | |
b7ea362b PA |
2812 | resume (resume_info, n); |
2813 | free (resume_info); | |
2814 | return; | |
2815 | ||
2816 | err: | |
2817 | write_enn (own_buf); | |
2818 | free (resume_info); | |
2819 | return; | |
2820 | } | |
2821 | ||
2822 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2823 | ||
2824 | static void | |
2825 | resume (struct thread_resume *actions, size_t num_actions) | |
2826 | { | |
c12a5089 | 2827 | client_state &cs = get_client_state (); |
bd99dc85 | 2828 | if (!non_stop) |
b7ea362b PA |
2829 | { |
2830 | /* Check if among the threads that GDB wants actioned, there's | |
2831 | one with a pending status to report. If so, skip actually | |
2832 | resuming/stopping and report the pending event | |
2833 | immediately. */ | |
649ebbca | 2834 | |
eaddb425 SM |
2835 | thread_info *thread_with_status = find_thread ([&] (thread_info *thread) |
2836 | { | |
2837 | return visit_actioned_threads (thread, actions, num_actions, | |
2838 | handle_pending_status); | |
2839 | }); | |
2840 | ||
2841 | if (thread_with_status != NULL) | |
b7ea362b | 2842 | return; |
bd99dc85 | 2843 | |
b7ea362b PA |
2844 | enable_async_io (); |
2845 | } | |
64386c31 | 2846 | |
b7ea362b | 2847 | (*the_target->resume) (actions, num_actions); |
64386c31 | 2848 | |
bd99dc85 | 2849 | if (non_stop) |
c12a5089 | 2850 | write_ok (cs.own_buf); |
bd99dc85 PA |
2851 | else |
2852 | { | |
c12a5089 | 2853 | cs.last_ptid = mywait (minus_one_ptid, &cs.last_status, 0, 1); |
ce1a5b52 | 2854 | |
c12a5089 | 2855 | if (cs.last_status.kind == TARGET_WAITKIND_NO_RESUMED |
f2faf941 | 2856 | && !report_no_resumed) |
fa96cb38 | 2857 | { |
f2faf941 PA |
2858 | /* The client does not support this stop reply. At least |
2859 | return error. */ | |
c12a5089 | 2860 | sprintf (cs.own_buf, "E.No unwaited-for children left."); |
fa96cb38 PA |
2861 | disable_async_io (); |
2862 | return; | |
2863 | } | |
2864 | ||
c12a5089 SC |
2865 | if (cs.last_status.kind != TARGET_WAITKIND_EXITED |
2866 | && cs.last_status.kind != TARGET_WAITKIND_SIGNALLED | |
2867 | && cs.last_status.kind != TARGET_WAITKIND_NO_RESUMED) | |
2868 | current_thread->last_status = cs.last_status; | |
d20a8ad9 | 2869 | |
ce1a5b52 PA |
2870 | /* From the client's perspective, all-stop mode always stops all |
2871 | threads implicitly (and the target backend has already done | |
2872 | so by now). Tag all threads as "want-stopped", so we don't | |
2873 | resume them implicitly without the client telling us to. */ | |
2874 | gdb_wants_all_threads_stopped (); | |
c12a5089 | 2875 | prepare_resume_reply (cs.own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 | 2876 | disable_async_io (); |
6bd31874 | 2877 | |
c12a5089 SC |
2878 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
2879 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2880 | target_mourn_inferior (cs.last_ptid); | |
bd99dc85 | 2881 | } |
64386c31 DJ |
2882 | } |
2883 | ||
2d717e4f | 2884 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
5b3da067 | 2885 | static int |
5b1c542e | 2886 | handle_v_attach (char *own_buf) |
2d717e4f | 2887 | { |
c12a5089 | 2888 | client_state &cs = get_client_state (); |
2d717e4f DJ |
2889 | int pid; |
2890 | ||
2891 | pid = strtol (own_buf + 8, NULL, 16); | |
50fa3001 | 2892 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2893 | { |
aeba519e PA |
2894 | /* Don't report shared library events after attaching, even if |
2895 | some libraries are preloaded. GDB will always poll the | |
2896 | library list. Avoids the "stopped by shared library event" | |
2897 | notice on the GDB side. */ | |
2898 | dlls_changed = 0; | |
bd99dc85 PA |
2899 | |
2900 | if (non_stop) | |
2901 | { | |
2902 | /* In non-stop, we don't send a resume reply. Stop events | |
2903 | will follow up using the normal notification | |
2904 | mechanism. */ | |
2905 | write_ok (own_buf); | |
2906 | } | |
2907 | else | |
c12a5089 | 2908 | prepare_resume_reply (own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 | 2909 | |
2d717e4f DJ |
2910 | return 1; |
2911 | } | |
2912 | else | |
2913 | { | |
2914 | write_enn (own_buf); | |
2915 | return 0; | |
2916 | } | |
2917 | } | |
2918 | ||
2919 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2920 | static int | |
5b1c542e | 2921 | handle_v_run (char *own_buf) |
2d717e4f | 2922 | { |
c12a5089 | 2923 | client_state &cs = get_client_state (); |
7c5ded6a SDJ |
2924 | char *p, *next_p; |
2925 | std::vector<char *> new_argv; | |
2090129c | 2926 | char *new_program_name = NULL; |
2d717e4f DJ |
2927 | int i, new_argc; |
2928 | ||
2929 | new_argc = 0; | |
2930 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2931 | { | |
2932 | p++; | |
2933 | new_argc++; | |
2934 | } | |
2935 | ||
7c5ded6a | 2936 | for (i = 0, p = own_buf + strlen ("vRun;"); *p; p = next_p, ++i) |
2d717e4f DJ |
2937 | { |
2938 | next_p = strchr (p, ';'); | |
2939 | if (next_p == NULL) | |
2940 | next_p = p + strlen (p); | |
2941 | ||
2942 | if (i == 0 && p == next_p) | |
7c5ded6a SDJ |
2943 | { |
2944 | /* No program specified. */ | |
2090129c SDJ |
2945 | new_program_name = NULL; |
2946 | } | |
2947 | else if (p == next_p) | |
2948 | { | |
2949 | /* Empty argument. */ | |
2950 | new_argv.push_back (xstrdup ("''")); | |
7c5ded6a | 2951 | } |
2d717e4f DJ |
2952 | else |
2953 | { | |
7c5ded6a | 2954 | size_t len = (next_p - p) / 2; |
2090129c | 2955 | /* ARG is the unquoted argument received via the RSP. */ |
7c5ded6a | 2956 | char *arg = (char *) xmalloc (len + 1); |
2090129c SDJ |
2957 | /* FULL_ARGS will contain the quoted version of ARG. */ |
2958 | char *full_arg = (char *) xmalloc ((len + 1) * 2); | |
2959 | /* These are pointers used to navigate the strings above. */ | |
2960 | char *tmp_arg = arg; | |
2961 | char *tmp_full_arg = full_arg; | |
2962 | int need_quote = 0; | |
7c5ded6a SDJ |
2963 | |
2964 | hex2bin (p, (gdb_byte *) arg, len); | |
2965 | arg[len] = '\0'; | |
2d717e4f | 2966 | |
2090129c SDJ |
2967 | while (*tmp_arg != '\0') |
2968 | { | |
2969 | switch (*tmp_arg) | |
2970 | { | |
2971 | case '\n': | |
2972 | /* Quote \n. */ | |
2973 | *tmp_full_arg = '\''; | |
2974 | ++tmp_full_arg; | |
2975 | need_quote = 1; | |
2976 | break; | |
2977 | ||
2978 | case '\'': | |
2979 | /* Quote single quote. */ | |
2980 | *tmp_full_arg = '\\'; | |
2981 | ++tmp_full_arg; | |
2982 | break; | |
2983 | ||
2984 | default: | |
2985 | break; | |
2986 | } | |
2987 | ||
2988 | *tmp_full_arg = *tmp_arg; | |
2989 | ++tmp_full_arg; | |
2990 | ++tmp_arg; | |
2991 | } | |
2992 | ||
2993 | if (need_quote) | |
2994 | *tmp_full_arg++ = '\''; | |
2995 | ||
2996 | /* Finish FULL_ARG and push it into the vector containing | |
2997 | the argv. */ | |
2998 | *tmp_full_arg = '\0'; | |
2999 | if (i == 0) | |
3000 | new_program_name = full_arg; | |
3001 | else | |
3002 | new_argv.push_back (full_arg); | |
3003 | xfree (arg); | |
3004 | } | |
2d717e4f DJ |
3005 | if (*next_p) |
3006 | next_p++; | |
2d717e4f | 3007 | } |
7c5ded6a | 3008 | new_argv.push_back (NULL); |
2d717e4f | 3009 | |
2090129c | 3010 | if (new_program_name == NULL) |
2d717e4f | 3011 | { |
f142445f DJ |
3012 | /* GDB didn't specify a program to run. Use the program from the |
3013 | last run with the new argument list. */ | |
25e3c82c | 3014 | if (program_path.get () == NULL) |
2d717e4f DJ |
3015 | { |
3016 | write_enn (own_buf); | |
7c5ded6a | 3017 | free_vector_argv (new_argv); |
2d717e4f DJ |
3018 | return 0; |
3019 | } | |
2090129c SDJ |
3020 | } |
3021 | else | |
25e3c82c | 3022 | program_path.set (gdb::unique_xmalloc_ptr<char> (new_program_name)); |
f142445f | 3023 | |
aef93bd7 | 3024 | /* Free the old argv and install the new one. */ |
2090129c SDJ |
3025 | free_vector_argv (program_args); |
3026 | program_args = new_argv; | |
3027 | ||
25e3c82c | 3028 | create_inferior (program_path.get (), program_args); |
2d717e4f | 3029 | |
c12a5089 | 3030 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
2d717e4f | 3031 | { |
c12a5089 | 3032 | prepare_resume_reply (own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 PA |
3033 | |
3034 | /* In non-stop, sending a resume reply doesn't set the general | |
3035 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
3036 | query which is the main thread of the new inferior. */ | |
3037 | if (non_stop) | |
c12a5089 | 3038 | cs.general_thread = cs.last_ptid; |
bd99dc85 | 3039 | |
2d717e4f DJ |
3040 | return 1; |
3041 | } | |
3042 | else | |
3043 | { | |
3044 | write_enn (own_buf); | |
3045 | return 0; | |
3046 | } | |
3047 | } | |
3048 | ||
95954743 | 3049 | /* Kill process. Return 1 if successful, 0 if failure. */ |
5b3da067 | 3050 | static int |
95954743 PA |
3051 | handle_v_kill (char *own_buf) |
3052 | { | |
c12a5089 | 3053 | client_state &cs = get_client_state (); |
95954743 PA |
3054 | int pid; |
3055 | char *p = &own_buf[6]; | |
c12a5089 | 3056 | if (cs.multi_process) |
0f54c268 PM |
3057 | pid = strtol (p, NULL, 16); |
3058 | else | |
3059 | pid = signal_pid; | |
a780ef4f PA |
3060 | |
3061 | process_info *proc = find_process_pid (pid); | |
3062 | ||
3063 | if (proc != nullptr && kill_inferior (proc) == 0) | |
95954743 | 3064 | { |
c12a5089 SC |
3065 | cs.last_status.kind = TARGET_WAITKIND_SIGNALLED; |
3066 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
f2907e49 | 3067 | cs.last_ptid = ptid_t (pid); |
c12a5089 | 3068 | discard_queued_stop_replies (cs.last_ptid); |
95954743 PA |
3069 | write_ok (own_buf); |
3070 | return 1; | |
3071 | } | |
3072 | else | |
3073 | { | |
3074 | write_enn (own_buf); | |
3075 | return 0; | |
3076 | } | |
3077 | } | |
3078 | ||
64386c31 | 3079 | /* Handle all of the extended 'v' packets. */ |
28170b88 | 3080 | void |
5b1c542e | 3081 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 3082 | { |
c12a5089 | 3083 | client_state &cs = get_client_state (); |
db42f210 | 3084 | if (!disable_packet_vCont) |
64386c31 | 3085 | { |
de979965 PA |
3086 | if (strcmp (own_buf, "vCtrlC") == 0) |
3087 | { | |
3088 | (*the_target->request_interrupt) (); | |
3089 | write_ok (own_buf); | |
3090 | return; | |
3091 | } | |
3092 | ||
61012eef | 3093 | if (startswith (own_buf, "vCont;")) |
db42f210 | 3094 | { |
5b1c542e | 3095 | handle_v_cont (own_buf); |
db42f210 PA |
3096 | return; |
3097 | } | |
64386c31 | 3098 | |
61012eef | 3099 | if (startswith (own_buf, "vCont?")) |
db42f210 | 3100 | { |
750ce8d1 YQ |
3101 | strcpy (own_buf, "vCont;c;C;t"); |
3102 | ||
21536b36 YQ |
3103 | if (target_supports_hardware_single_step () |
3104 | || target_supports_software_single_step () | |
c12a5089 | 3105 | || !cs.vCont_supported) |
750ce8d1 | 3106 | { |
21536b36 YQ |
3107 | /* If target supports single step either by hardware or by |
3108 | software, add actions s and S to the list of supported | |
3109 | actions. On the other hand, if GDB doesn't request the | |
3110 | supported vCont actions in qSupported packet, add s and | |
3111 | S to the list too. */ | |
750ce8d1 YQ |
3112 | own_buf = own_buf + strlen (own_buf); |
3113 | strcpy (own_buf, ";s;S"); | |
3114 | } | |
3115 | ||
c2d6af84 PA |
3116 | if (target_supports_range_stepping ()) |
3117 | { | |
3118 | own_buf = own_buf + strlen (own_buf); | |
3119 | strcpy (own_buf, ";r"); | |
3120 | } | |
db42f210 PA |
3121 | return; |
3122 | } | |
64386c31 DJ |
3123 | } |
3124 | ||
61012eef | 3125 | if (startswith (own_buf, "vFile:") |
a6b151f1 DJ |
3126 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
3127 | return; | |
3128 | ||
61012eef | 3129 | if (startswith (own_buf, "vAttach;")) |
2d717e4f | 3130 | { |
c12a5089 | 3131 | if ((!extended_protocol || !cs.multi_process) && target_running ()) |
2d717e4f | 3132 | { |
fd96d250 PA |
3133 | fprintf (stderr, "Already debugging a process\n"); |
3134 | write_enn (own_buf); | |
3135 | return; | |
2d717e4f | 3136 | } |
5b1c542e | 3137 | handle_v_attach (own_buf); |
2d717e4f DJ |
3138 | return; |
3139 | } | |
3140 | ||
61012eef | 3141 | if (startswith (own_buf, "vRun;")) |
2d717e4f | 3142 | { |
c12a5089 | 3143 | if ((!extended_protocol || !cs.multi_process) && target_running ()) |
2d717e4f | 3144 | { |
fd96d250 PA |
3145 | fprintf (stderr, "Already debugging a process\n"); |
3146 | write_enn (own_buf); | |
3147 | return; | |
2d717e4f | 3148 | } |
5b1c542e | 3149 | handle_v_run (own_buf); |
2d717e4f DJ |
3150 | return; |
3151 | } | |
3152 | ||
61012eef | 3153 | if (startswith (own_buf, "vKill;")) |
95954743 PA |
3154 | { |
3155 | if (!target_running ()) | |
3156 | { | |
3157 | fprintf (stderr, "No process to kill\n"); | |
3158 | write_enn (own_buf); | |
3159 | return; | |
3160 | } | |
3161 | handle_v_kill (own_buf); | |
3162 | return; | |
3163 | } | |
3164 | ||
14a00470 YQ |
3165 | if (handle_notif_ack (own_buf, packet_len)) |
3166 | return; | |
bd99dc85 | 3167 | |
64386c31 DJ |
3168 | /* Otherwise we didn't know what packet it was. Say we didn't |
3169 | understand it. */ | |
3170 | own_buf[0] = 0; | |
3171 | return; | |
3172 | } | |
3173 | ||
0bfdf32f | 3174 | /* Resume thread and wait for another event. In non-stop mode, |
bd99dc85 PA |
3175 | don't really wait here, but return immediatelly to the event |
3176 | loop. */ | |
1fd7cdc2 | 3177 | static void |
5b1c542e | 3178 | myresume (char *own_buf, int step, int sig) |
64386c31 | 3179 | { |
c12a5089 | 3180 | client_state &cs = get_client_state (); |
64386c31 DJ |
3181 | struct thread_resume resume_info[2]; |
3182 | int n = 0; | |
2bd7c093 | 3183 | int valid_cont_thread; |
a20d5e98 | 3184 | |
d7e15655 TT |
3185 | valid_cont_thread = (cs.cont_thread != null_ptid |
3186 | && cs.cont_thread != minus_one_ptid); | |
2bd7c093 PA |
3187 | |
3188 | if (step || sig || valid_cont_thread) | |
64386c31 | 3189 | { |
fbd5db48 | 3190 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
3191 | if (step) |
3192 | resume_info[0].kind = resume_step; | |
3193 | else | |
3194 | resume_info[0].kind = resume_continue; | |
64386c31 | 3195 | resume_info[0].sig = sig; |
64386c31 DJ |
3196 | n++; |
3197 | } | |
2bd7c093 PA |
3198 | |
3199 | if (!valid_cont_thread) | |
3200 | { | |
95954743 | 3201 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 3202 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
3203 | resume_info[n].sig = 0; |
3204 | n++; | |
3205 | } | |
64386c31 | 3206 | |
b7ea362b | 3207 | resume (resume_info, n); |
bd99dc85 PA |
3208 | } |
3209 | ||
f0045347 | 3210 | /* Callback for for_each_thread. Make a new stop reply for each |
bd99dc85 PA |
3211 | stopped thread. */ |
3212 | ||
99078d34 SM |
3213 | static void |
3214 | queue_stop_reply_callback (thread_info *thread) | |
bd99dc85 | 3215 | { |
8336d594 PA |
3216 | /* For now, assume targets that don't have this callback also don't |
3217 | manage the thread's last_status field. */ | |
3218 | if (the_target->thread_stopped == NULL) | |
95954743 | 3219 | { |
b494cdff | 3220 | struct vstop_notif *new_notif = new struct vstop_notif; |
14a00470 | 3221 | |
9c80ecd6 | 3222 | new_notif->ptid = thread->id; |
14a00470 | 3223 | new_notif->status = thread->last_status; |
8336d594 PA |
3224 | /* Pass the last stop reply back to GDB, but don't notify |
3225 | yet. */ | |
b494cdff | 3226 | notif_event_enque (¬if_stop, new_notif); |
8336d594 PA |
3227 | } |
3228 | else | |
3229 | { | |
3230 | if (thread_stopped (thread)) | |
3231 | { | |
3232 | if (debug_threads) | |
3360c0bf | 3233 | { |
23fdd69e | 3234 | std::string status_string |
3360c0bf LM |
3235 | = target_waitstatus_to_string (&thread->last_status); |
3236 | ||
87ce2a04 | 3237 | debug_printf ("Reporting thread %s as already stopped with %s\n", |
9c80ecd6 | 3238 | target_pid_to_str (thread->id), |
23fdd69e | 3239 | status_string.c_str ()); |
3360c0bf | 3240 | } |
8336d594 | 3241 | |
d20a8ad9 PA |
3242 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
3243 | ||
8336d594 PA |
3244 | /* Pass the last stop reply back to GDB, but don't notify |
3245 | yet. */ | |
9c80ecd6 | 3246 | queue_stop_reply (thread->id, &thread->last_status); |
8336d594 | 3247 | } |
95954743 | 3248 | } |
64386c31 DJ |
3249 | } |
3250 | ||
ce1a5b52 PA |
3251 | /* Set this inferior threads's state as "want-stopped". We won't |
3252 | resume this thread until the client gives us another action for | |
3253 | it. */ | |
8336d594 PA |
3254 | |
3255 | static void | |
9c80ecd6 | 3256 | gdb_wants_thread_stopped (thread_info *thread) |
8336d594 | 3257 | { |
8336d594 PA |
3258 | thread->last_resume_kind = resume_stop; |
3259 | ||
3260 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
3261 | { | |
ce1a5b52 PA |
3262 | /* Most threads are stopped implicitly (all-stop); tag that with |
3263 | signal 0. */ | |
8336d594 | 3264 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 3265 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
3266 | } |
3267 | } | |
3268 | ||
3269 | /* Set all threads' states as "want-stopped". */ | |
3270 | ||
3271 | static void | |
3272 | gdb_wants_all_threads_stopped (void) | |
3273 | { | |
f0045347 | 3274 | for_each_thread (gdb_wants_thread_stopped); |
8336d594 PA |
3275 | } |
3276 | ||
f0045347 | 3277 | /* Callback for for_each_thread. If the thread is stopped with an |
b7ea362b PA |
3278 | interesting event, mark it as having a pending event. */ |
3279 | ||
3280 | static void | |
9c80ecd6 | 3281 | set_pending_status_callback (thread_info *thread) |
b7ea362b | 3282 | { |
b7ea362b PA |
3283 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED |
3284 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
3285 | /* A breakpoint, watchpoint or finished step from a previous | |
3286 | GDB run isn't considered interesting for a new GDB run. | |
3287 | If we left those pending, the new GDB could consider them | |
3288 | random SIGTRAPs. This leaves out real async traps. We'd | |
3289 | have to peek into the (target-specific) siginfo to | |
3290 | distinguish those. */ | |
3291 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
3292 | thread->status_pending_p = 1; | |
3293 | } | |
3294 | ||
5b1c542e PA |
3295 | /* Status handler for the '?' packet. */ |
3296 | ||
3297 | static void | |
3298 | handle_status (char *own_buf) | |
3299 | { | |
c12a5089 SC |
3300 | client_state &cs = get_client_state (); |
3301 | ||
8336d594 | 3302 | /* GDB is connected, don't forward events to the target anymore. */ |
9179355e SM |
3303 | for_each_process ([] (process_info *process) { |
3304 | process->gdb_detached = 0; | |
3305 | }); | |
bd99dc85 PA |
3306 | |
3307 | /* In non-stop mode, we must send a stop reply for each stopped | |
3308 | thread. In all-stop mode, just send one for the first stopped | |
3309 | thread we find. */ | |
3310 | ||
3311 | if (non_stop) | |
3312 | { | |
99078d34 | 3313 | for_each_thread (queue_stop_reply_callback); |
bd99dc85 PA |
3314 | |
3315 | /* The first is sent immediatly. OK is sent if there is no | |
3316 | stopped thread, which is the same handling of the vStopped | |
3317 | packet (by design). */ | |
c12a5089 | 3318 | notif_write_event (¬if_stop, cs.own_buf); |
bd99dc85 | 3319 | } |
5b1c542e | 3320 | else |
bd99dc85 | 3321 | { |
9c80ecd6 | 3322 | thread_info *thread = NULL; |
b7ea362b | 3323 | |
7984d532 | 3324 | pause_all (0); |
fa593d66 | 3325 | stabilize_threads (); |
8336d594 PA |
3326 | gdb_wants_all_threads_stopped (); |
3327 | ||
b7ea362b PA |
3328 | /* We can only report one status, but we might be coming out of |
3329 | non-stop -- if more than one thread is stopped with | |
3330 | interesting events, leave events for the threads we're not | |
3331 | reporting now pending. They'll be reported the next time the | |
3332 | threads are resumed. Start by marking all interesting events | |
3333 | as pending. */ | |
f0045347 | 3334 | for_each_thread (set_pending_status_callback); |
b7ea362b PA |
3335 | |
3336 | /* Prefer the last thread that reported an event to GDB (even if | |
3337 | that was a GDB_SIGNAL_TRAP). */ | |
c12a5089 SC |
3338 | if (cs.last_status.kind != TARGET_WAITKIND_IGNORE |
3339 | && cs.last_status.kind != TARGET_WAITKIND_EXITED | |
3340 | && cs.last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
3341 | thread = find_thread_ptid (cs.last_ptid); | |
b7ea362b PA |
3342 | |
3343 | /* If the last event thread is not found for some reason, look | |
3344 | for some other thread that might have an event to report. */ | |
3345 | if (thread == NULL) | |
da4ae14a | 3346 | thread = find_thread ([] (thread_info *thr_arg) |
99078d34 | 3347 | { |
da4ae14a | 3348 | return thr_arg->status_pending_p; |
99078d34 | 3349 | }); |
b7ea362b PA |
3350 | |
3351 | /* If we're still out of luck, simply pick the first thread in | |
3352 | the thread list. */ | |
3353 | if (thread == NULL) | |
9c80ecd6 | 3354 | thread = get_first_thread (); |
b7ea362b PA |
3355 | |
3356 | if (thread != NULL) | |
8336d594 | 3357 | { |
b7ea362b PA |
3358 | struct thread_info *tp = (struct thread_info *) thread; |
3359 | ||
3360 | /* We're reporting this event, so it's no longer | |
3361 | pending. */ | |
3362 | tp->status_pending_p = 0; | |
3363 | ||
3364 | /* GDB assumes the current thread is the thread we're | |
3365 | reporting the status for. */ | |
c12a5089 | 3366 | cs.general_thread = thread->id; |
f557a88a | 3367 | set_desired_thread (); |
8336d594 | 3368 | |
b7ea362b | 3369 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
9c80ecd6 | 3370 | prepare_resume_reply (own_buf, tp->id, &tp->last_status); |
8336d594 | 3371 | } |
bd99dc85 PA |
3372 | else |
3373 | strcpy (own_buf, "W00"); | |
3374 | } | |
5b1c542e PA |
3375 | } |
3376 | ||
dd24457d DJ |
3377 | static void |
3378 | gdbserver_version (void) | |
3379 | { | |
c16158bc | 3380 | printf ("GNU gdbserver %s%s\n" |
66d91b39 | 3381 | "Copyright (C) 2019 Free Software Foundation, Inc.\n" |
493e2a69 MS |
3382 | "gdbserver is free software, covered by the " |
3383 | "GNU General Public License.\n" | |
dd24457d | 3384 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 3385 | PKGVERSION, version, host_name); |
dd24457d DJ |
3386 | } |
3387 | ||
0bc68c49 | 3388 | static void |
c16158bc | 3389 | gdbserver_usage (FILE *stream) |
0bc68c49 | 3390 | { |
c16158bc JM |
3391 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
3392 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
3393 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
3394 | "\n" | |
41f98f02 PA |
3395 | "COMM may either be a tty device (for serial debugging),\n" |
3396 | "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n" | |
3397 | "stdin/stdout of gdbserver.\n" | |
3398 | "PROG is the executable program. ARGS are arguments passed to inferior.\n" | |
3399 | "PID is the process ID to attach to, when --attach is specified.\n" | |
3400 | "\n" | |
3401 | "Operating modes:\n" | |
3402 | "\n" | |
3403 | " --attach Attach to running process PID.\n" | |
3404 | " --multi Start server without a specific program, and\n" | |
3405 | " only quit when explicitly commanded.\n" | |
3406 | " --once Exit after the first connection has closed.\n" | |
3407 | " --help Print this message and then exit.\n" | |
3408 | " --version Display version information and exit.\n" | |
3409 | "\n" | |
3410 | "Other options:\n" | |
3411 | "\n" | |
3412 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" | |
3413 | " --disable-randomization\n" | |
3414 | " Run PROG with address space randomization disabled.\n" | |
3415 | " --no-disable-randomization\n" | |
3416 | " Don't disable address space randomization when\n" | |
3417 | " starting PROG.\n" | |
aefd8b33 SDJ |
3418 | " --startup-with-shell\n" |
3419 | " Start PROG using a shell. I.e., execs a shell that\n" | |
3420 | " then execs PROG. (default)\n" | |
3421 | " --no-startup-with-shell\n" | |
3422 | " Exec PROG directly instead of using a shell.\n" | |
3423 | " Disables argument globbing and variable substitution\n" | |
3424 | " on UNIX-like systems.\n" | |
41f98f02 PA |
3425 | "\n" |
3426 | "Debug options:\n" | |
c16158bc | 3427 | "\n" |
62709adf | 3428 | " --debug Enable general debugging output.\n" |
227a9e65 | 3429 | " --debug-format=OPT1[,OPT2,...]\n" |
87ce2a04 DE |
3430 | " Specify extra content in debugging output.\n" |
3431 | " Options:\n" | |
3432 | " all\n" | |
3433 | " none\n" | |
87ce2a04 | 3434 | " timestamp\n" |
62709adf | 3435 | " --remote-debug Enable remote protocol debugging output.\n" |
227a9e65 | 3436 | " --disable-packet=OPT1[,OPT2,...]\n" |
41f98f02 PA |
3437 | " Disable support for RSP packets or features.\n" |
3438 | " Options:\n" | |
3439 | " vCont, Tthread, qC, qfThreadInfo and \n" | |
3440 | " threads (disable all threading packets).\n" | |
3441 | "\n" | |
3442 | "For more information, consult the GDB manual (available as on-line \n" | |
3443 | "info or a printed manual).\n"); | |
c16158bc JM |
3444 | if (REPORT_BUGS_TO[0] && stream == stdout) |
3445 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
3446 | } |
3447 | ||
db42f210 PA |
3448 | static void |
3449 | gdbserver_show_disableable (FILE *stream) | |
3450 | { | |
3451 | fprintf (stream, "Disableable packets:\n" | |
3452 | " vCont \tAll vCont packets\n" | |
3453 | " qC \tQuerying the current thread\n" | |
3454 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
3455 | " Tthread \tPassing the thread specifier in the " |
3456 | "T stop reply packet\n" | |
db42f210 PA |
3457 | " threads \tAll of the above\n"); |
3458 | } | |
3459 | ||
95954743 | 3460 | static void |
9179355e | 3461 | kill_inferior_callback (process_info *process) |
95954743 | 3462 | { |
a780ef4f PA |
3463 | kill_inferior (process); |
3464 | discard_queued_stop_replies (ptid_t (process->pid)); | |
95954743 PA |
3465 | } |
3466 | ||
9f767825 DE |
3467 | /* Call this when exiting gdbserver with possible inferiors that need |
3468 | to be killed or detached from. */ | |
3469 | ||
3470 | static void | |
3471 | detach_or_kill_for_exit (void) | |
3472 | { | |
3473 | /* First print a list of the inferiors we will be killing/detaching. | |
3474 | This is to assist the user, for example, in case the inferior unexpectedly | |
3475 | dies after we exit: did we screw up or did the inferior exit on its own? | |
3476 | Having this info will save some head-scratching. */ | |
3477 | ||
3478 | if (have_started_inferiors_p ()) | |
3479 | { | |
3480 | fprintf (stderr, "Killing process(es):"); | |
9179355e SM |
3481 | |
3482 | for_each_process ([] (process_info *process) { | |
3483 | if (!process->attached) | |
3484 | fprintf (stderr, " %d", process->pid); | |
3485 | }); | |
3486 | ||
9f767825 DE |
3487 | fprintf (stderr, "\n"); |
3488 | } | |
3489 | if (have_attached_inferiors_p ()) | |
3490 | { | |
3491 | fprintf (stderr, "Detaching process(es):"); | |
9179355e SM |
3492 | |
3493 | for_each_process ([] (process_info *process) { | |
3494 | if (process->attached) | |
3495 | fprintf (stderr, " %d", process->pid); | |
3496 | }); | |
3497 | ||
9f767825 DE |
3498 | fprintf (stderr, "\n"); |
3499 | } | |
3500 | ||
3501 | /* Now we can kill or detach the inferiors. */ | |
9179355e SM |
3502 | for_each_process ([] (process_info *process) { |
3503 | int pid = process->pid; | |
3504 | ||
3505 | if (process->attached) | |
ef2ddb33 | 3506 | detach_inferior (process); |
9179355e | 3507 | else |
a780ef4f | 3508 | kill_inferior (process); |
9f767825 | 3509 | |
f2907e49 | 3510 | discard_queued_stop_replies (ptid_t (pid)); |
9179355e | 3511 | }); |
9f767825 DE |
3512 | } |
3513 | ||
860789c7 GB |
3514 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
3515 | static int exit_code; | |
3516 | ||
37991b4f TT |
3517 | /* Wrapper for detach_or_kill_for_exit that catches and prints |
3518 | errors. */ | |
860789c7 GB |
3519 | |
3520 | static void | |
37991b4f | 3521 | detach_or_kill_for_exit_cleanup () |
860789c7 | 3522 | { |
a70b8144 | 3523 | try |
860789c7 GB |
3524 | { |
3525 | detach_or_kill_for_exit (); | |
3526 | } | |
230d2906 | 3527 | catch (const gdb_exception &exception) |
860789c7 GB |
3528 | { |
3529 | fflush (stdout); | |
3d6e9d23 TT |
3530 | fprintf (stderr, "Detach or kill failed: %s\n", |
3531 | exception.what ()); | |
860789c7 GB |
3532 | exit_code = 1; |
3533 | } | |
3534 | } | |
3535 | ||
3536 | /* Main function. This is called by the real "main" function, | |
3537 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3538 | ||
3539 | static void ATTRIBUTE_NORETURN | |
3540 | captured_main (int argc, char *argv[]) | |
c906108c | 3541 | { |
0729219d DJ |
3542 | int bad_attach; |
3543 | int pid; | |
fb32b4f7 PA |
3544 | char *arg_end; |
3545 | const char *port = NULL; | |
2d717e4f | 3546 | char **next_arg = &argv[1]; |
89dc0afd JK |
3547 | volatile int multi_mode = 0; |
3548 | volatile int attach = 0; | |
2d717e4f | 3549 | int was_running; |
6d580b63 | 3550 | bool selftest = false; |
605fd3c6 | 3551 | #if GDB_SELF_TEST |
1526853e | 3552 | const char *selftest_filter = NULL; |
605fd3c6 | 3553 | #endif |
c906108c | 3554 | |
b4987c95 | 3555 | current_directory = getcwd (NULL, 0); |
c12a5089 SC |
3556 | client_state &cs = get_client_state (); |
3557 | ||
b4987c95 SDJ |
3558 | if (current_directory == NULL) |
3559 | { | |
81561546 | 3560 | error (_("Could not find current working directory: %s"), |
b4987c95 SDJ |
3561 | safe_strerror (errno)); |
3562 | } | |
3563 | ||
2d717e4f | 3564 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3565 | { |
2d717e4f DJ |
3566 | if (strcmp (*next_arg, "--version") == 0) |
3567 | { | |
3568 | gdbserver_version (); | |
3569 | exit (0); | |
3570 | } | |
3571 | else if (strcmp (*next_arg, "--help") == 0) | |
3572 | { | |
c16158bc | 3573 | gdbserver_usage (stdout); |
2d717e4f DJ |
3574 | exit (0); |
3575 | } | |
3576 | else if (strcmp (*next_arg, "--attach") == 0) | |
3577 | attach = 1; | |
3578 | else if (strcmp (*next_arg, "--multi") == 0) | |
3579 | multi_mode = 1; | |
ccd213ac DJ |
3580 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3581 | { | |
7c5ded6a SDJ |
3582 | char **tmp; |
3583 | ||
ccd213ac DJ |
3584 | next_arg++; |
3585 | ||
7c5ded6a | 3586 | tmp = next_arg; |
ccd213ac | 3587 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) |
7c5ded6a | 3588 | { |
2090129c SDJ |
3589 | wrapper_argv += *next_arg; |
3590 | wrapper_argv += ' '; | |
7c5ded6a SDJ |
3591 | next_arg++; |
3592 | } | |
ccd213ac | 3593 | |
2090129c SDJ |
3594 | if (!wrapper_argv.empty ()) |
3595 | { | |
3596 | /* Erase the last whitespace. */ | |
3597 | wrapper_argv.erase (wrapper_argv.end () - 1); | |
3598 | } | |
3599 | ||
7c5ded6a | 3600 | if (next_arg == tmp || *next_arg == NULL) |
ccd213ac | 3601 | { |
c16158bc | 3602 | gdbserver_usage (stderr); |
ccd213ac DJ |
3603 | exit (1); |
3604 | } | |
3605 | ||
3606 | /* Consume the "--". */ | |
3607 | *next_arg = NULL; | |
3608 | } | |
2d717e4f DJ |
3609 | else if (strcmp (*next_arg, "--debug") == 0) |
3610 | debug_threads = 1; | |
61012eef | 3611 | else if (startswith (*next_arg, "--debug-format=")) |
87ce2a04 | 3612 | { |
2cc05030 | 3613 | std::string error_msg |
87ce2a04 DE |
3614 | = parse_debug_format_options ((*next_arg) |
3615 | + sizeof ("--debug-format=") - 1, 0); | |
3616 | ||
2cc05030 | 3617 | if (!error_msg.empty ()) |
87ce2a04 | 3618 | { |
2cc05030 | 3619 | fprintf (stderr, "%s", error_msg.c_str ()); |
87ce2a04 DE |
3620 | exit (1); |
3621 | } | |
3622 | } | |
62709adf PA |
3623 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
3624 | remote_debug = 1; | |
aeb2e706 AH |
3625 | else if (startswith (*next_arg, "--debug-file=")) |
3626 | debug_set_output ((*next_arg) + sizeof ("--debug-file=") -1); | |
db42f210 PA |
3627 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3628 | { | |
3629 | gdbserver_show_disableable (stdout); | |
3630 | exit (0); | |
3631 | } | |
61012eef | 3632 | else if (startswith (*next_arg, "--disable-packet=")) |
db42f210 PA |
3633 | { |
3634 | char *packets, *tok; | |
3635 | ||
3636 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
3637 | for (tok = strtok (packets, ","); | |
3638 | tok != NULL; | |
3639 | tok = strtok (NULL, ",")) | |
3640 | { | |
3641 | if (strcmp ("vCont", tok) == 0) | |
3e6ec53a | 3642 | disable_packet_vCont = true; |
db42f210 | 3643 | else if (strcmp ("Tthread", tok) == 0) |
3e6ec53a | 3644 | disable_packet_Tthread = true; |
db42f210 | 3645 | else if (strcmp ("qC", tok) == 0) |
3e6ec53a | 3646 | disable_packet_qC = true; |
db42f210 | 3647 | else if (strcmp ("qfThreadInfo", tok) == 0) |
3e6ec53a | 3648 | disable_packet_qfThreadInfo = true; |
db42f210 PA |
3649 | else if (strcmp ("threads", tok) == 0) |
3650 | { | |
3e6ec53a CB |
3651 | disable_packet_vCont = true; |
3652 | disable_packet_Tthread = true; | |
3653 | disable_packet_qC = true; | |
3654 | disable_packet_qfThreadInfo = true; | |
db42f210 PA |
3655 | } |
3656 | else | |
3657 | { | |
3658 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3659 | tok); | |
3660 | gdbserver_show_disableable (stderr); | |
3661 | exit (1); | |
3662 | } | |
3663 | } | |
3664 | } | |
e0f9f062 DE |
3665 | else if (strcmp (*next_arg, "-") == 0) |
3666 | { | |
3667 | /* "-" specifies a stdio connection and is a form of port | |
3668 | specification. */ | |
fb32b4f7 PA |
3669 | port = STDIO_CONNECTION_NAME; |
3670 | next_arg++; | |
e0f9f062 DE |
3671 | break; |
3672 | } | |
03583c20 | 3673 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
c12a5089 | 3674 | cs.disable_randomization = 1; |
03583c20 | 3675 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) |
c12a5089 | 3676 | cs.disable_randomization = 0; |
aefd8b33 SDJ |
3677 | else if (strcmp (*next_arg, "--startup-with-shell") == 0) |
3678 | startup_with_shell = true; | |
3679 | else if (strcmp (*next_arg, "--no-startup-with-shell") == 0) | |
3680 | startup_with_shell = false; | |
03f2bd59 | 3681 | else if (strcmp (*next_arg, "--once") == 0) |
3e6ec53a | 3682 | run_once = true; |
6d580b63 YQ |
3683 | else if (strcmp (*next_arg, "--selftest") == 0) |
3684 | selftest = true; | |
1526853e SM |
3685 | else if (startswith (*next_arg, "--selftest=")) |
3686 | { | |
3687 | selftest = true; | |
605fd3c6 | 3688 | #if GDB_SELF_TEST |
1526853e | 3689 | selftest_filter = *next_arg + strlen ("--selftest="); |
605fd3c6 | 3690 | #endif |
1526853e | 3691 | } |
2d717e4f DJ |
3692 | else |
3693 | { | |
3694 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3695 | exit (1); | |
3696 | } | |
dd24457d | 3697 | |
2d717e4f DJ |
3698 | next_arg++; |
3699 | continue; | |
dd24457d DJ |
3700 | } |
3701 | ||
fb32b4f7 PA |
3702 | if (port == NULL) |
3703 | { | |
3704 | port = *next_arg; | |
3705 | next_arg++; | |
3706 | } | |
6d580b63 YQ |
3707 | if ((port == NULL || (!attach && !multi_mode && *next_arg == NULL)) |
3708 | && !selftest) | |
2d717e4f | 3709 | { |
c16158bc | 3710 | gdbserver_usage (stderr); |
2d717e4f DJ |
3711 | exit (1); |
3712 | } | |
3713 | ||
602e3198 JK |
3714 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3715 | opened by remote_prepare. */ | |
3716 | notice_open_fds (); | |
3717 | ||
e379cee6 | 3718 | save_original_signals_state (false); |
f348d89a | 3719 | |
e0f9f062 DE |
3720 | /* We need to know whether the remote connection is stdio before |
3721 | starting the inferior. Inferiors created in this scenario have | |
3722 | stdin,stdout redirected. So do this here before we call | |
3723 | start_inferior. */ | |
6d580b63 YQ |
3724 | if (port != NULL) |
3725 | remote_prepare (port); | |
e0f9f062 | 3726 | |
0729219d DJ |
3727 | bad_attach = 0; |
3728 | pid = 0; | |
2d717e4f DJ |
3729 | |
3730 | /* --attach used to come after PORT, so allow it there for | |
3731 | compatibility. */ | |
3732 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3733 | { |
2d717e4f DJ |
3734 | attach = 1; |
3735 | next_arg++; | |
45b7b345 DJ |
3736 | } |
3737 | ||
2d717e4f DJ |
3738 | if (attach |
3739 | && (*next_arg == NULL | |
3740 | || (*next_arg)[0] == '\0' | |
3741 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3742 | || *arg_end != '\0' | |
3743 | || next_arg[1] != NULL)) | |
3744 | bad_attach = 1; | |
3745 | ||
3746 | if (bad_attach) | |
dd24457d | 3747 | { |
c16158bc | 3748 | gdbserver_usage (stderr); |
dd24457d DJ |
3749 | exit (1); |
3750 | } | |
c906108c | 3751 | |
2090129c | 3752 | /* Gather information about the environment. */ |
9a6c7d9c | 3753 | our_environ = gdb_environ::from_host_environ (); |
2090129c | 3754 | |
a20d5e98 | 3755 | initialize_async_io (); |
4ce44c66 | 3756 | initialize_low (); |
2090129c | 3757 | have_job_control (); |
60f662b0 | 3758 | initialize_event_loop (); |
219f2f23 PA |
3759 | if (target_supports_tracepoints ()) |
3760 | initialize_tracepoint (); | |
4ce44c66 | 3761 | |
224c3ddb | 3762 | mem_buf = (unsigned char *) xmalloc (PBUFSIZ); |
0a30fbc4 | 3763 | |
6d580b63 YQ |
3764 | if (selftest) |
3765 | { | |
605fd3c6 | 3766 | #if GDB_SELF_TEST |
1526853e | 3767 | selftests::run_tests (selftest_filter); |
605fd3c6 | 3768 | #else |
8ecfd7bd | 3769 | printf (_("Selftests have been disabled for this build.\n")); |
605fd3c6 | 3770 | #endif |
6d580b63 YQ |
3771 | throw_quit ("Quit"); |
3772 | } | |
3773 | ||
2d717e4f | 3774 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3775 | { |
2d717e4f DJ |
3776 | int i, n; |
3777 | ||
3778 | n = argc - (next_arg - argv); | |
b02f78f9 | 3779 | program_path.set (make_unique_xstrdup (next_arg[0])); |
2090129c SDJ |
3780 | for (i = 1; i < n; i++) |
3781 | program_args.push_back (xstrdup (next_arg[i])); | |
3782 | program_args.push_back (NULL); | |
2d717e4f | 3783 | |
45b7b345 | 3784 | /* Wait till we are at first instruction in program. */ |
25e3c82c | 3785 | create_inferior (program_path.get (), program_args); |
c906108c | 3786 | |
c588c53c MS |
3787 | /* We are now (hopefully) stopped at the first instruction of |
3788 | the target process. This assumes that the target process was | |
3789 | successfully created. */ | |
45b7b345 | 3790 | } |
2d717e4f DJ |
3791 | else if (pid != 0) |
3792 | { | |
5b1c542e | 3793 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3794 | error ("Attaching not supported on this target"); |
3795 | ||
3796 | /* Otherwise succeeded. */ | |
3797 | } | |
45b7b345 DJ |
3798 | else |
3799 | { | |
c12a5089 SC |
3800 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
3801 | cs.last_status.value.integer = 0; | |
3802 | cs.last_ptid = minus_one_ptid; | |
45b7b345 | 3803 | } |
37991b4f TT |
3804 | |
3805 | SCOPE_EXIT { detach_or_kill_for_exit_cleanup (); }; | |
c906108c | 3806 | |
311de423 PA |
3807 | /* Don't report shared library events on the initial connection, |
3808 | even if some libraries are preloaded. Avoids the "stopped by | |
3809 | shared library event" notice on gdb side. */ | |
3810 | dlls_changed = 0; | |
3811 | ||
c12a5089 SC |
3812 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
3813 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3814 | was_running = 0; |
3815 | else | |
3816 | was_running = 1; | |
3817 | ||
3818 | if (!was_running && !multi_mode) | |
860789c7 | 3819 | error ("No program to debug"); |
c588c53c | 3820 | |
c906108c SS |
3821 | while (1) |
3822 | { | |
c12a5089 SC |
3823 | cs.noack_mode = 0; |
3824 | cs.multi_process = 0; | |
3825 | cs.report_fork_events = 0; | |
3826 | cs.report_vfork_events = 0; | |
3827 | cs.report_exec_events = 0; | |
8336d594 | 3828 | /* Be sure we're out of tfind mode. */ |
c12a5089 SC |
3829 | cs.current_traceframe = -1; |
3830 | cs.cont_thread = null_ptid; | |
3831 | cs.swbreak_feature = 0; | |
3832 | cs.hwbreak_feature = 0; | |
3833 | cs.vCont_supported = 0; | |
bd99dc85 | 3834 | |
2d717e4f | 3835 | remote_open (port); |
c906108c | 3836 | |
a70b8144 | 3837 | try |
2d717e4f | 3838 | { |
860789c7 GB |
3839 | /* Wait for events. This will return when all event sources |
3840 | are removed from the event loop. */ | |
3841 | start_event_loop (); | |
2d717e4f | 3842 | |
860789c7 | 3843 | /* If an exit was requested (using the "monitor exit" |
fddedbe6 PA |
3844 | command), terminate now. */ |
3845 | if (exit_requested) | |
3846 | throw_quit ("Quit"); | |
3847 | ||
3848 | /* The only other way to get here is for getpkt to fail: | |
3849 | ||
3850 | - If --once was specified, we're done. | |
bd99dc85 | 3851 | |
fddedbe6 PA |
3852 | - If not in extended-remote mode, and we're no longer |
3853 | debugging anything, simply exit: GDB has disconnected | |
3854 | after processing the last process exit. | |
3855 | ||
3856 | - Otherwise, close the connection and reopen it at the | |
3857 | top of the loop. */ | |
3858 | if (run_once || (!extended_protocol && !target_running ())) | |
860789c7 | 3859 | throw_quit ("Quit"); |
bd99dc85 | 3860 | |
860789c7 GB |
3861 | fprintf (stderr, |
3862 | "Remote side has terminated connection. " | |
3863 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3864 | |
860789c7 GB |
3865 | /* Get rid of any pending statuses. An eventual reconnection |
3866 | (by the same GDB instance or another) will refresh all its | |
3867 | state from scratch. */ | |
465a859e | 3868 | discard_queued_stop_replies (minus_one_ptid); |
f0045347 SM |
3869 | for_each_thread ([] (thread_info *thread) |
3870 | { | |
3871 | thread->status_pending_p = 0; | |
3872 | }); | |
9939e131 | 3873 | |
860789c7 | 3874 | if (tracing) |
8336d594 | 3875 | { |
860789c7 | 3876 | if (disconnected_tracing) |
8336d594 | 3877 | { |
860789c7 GB |
3878 | /* Try to enable non-stop/async mode, so we we can |
3879 | both wait for an async socket accept, and handle | |
3880 | async target events simultaneously. There's also | |
3881 | no point either in having the target always stop | |
3882 | all threads, when we're going to pass signals | |
3883 | down without informing GDB. */ | |
3884 | if (!non_stop) | |
3885 | { | |
3886 | if (start_non_stop (1)) | |
3887 | non_stop = 1; | |
3888 | ||
3889 | /* Detaching implicitly resumes all threads; | |
3890 | simply disconnecting does not. */ | |
3891 | } | |
3892 | } | |
3893 | else | |
3894 | { | |
3895 | fprintf (stderr, | |
3896 | "Disconnected tracing disabled; " | |
3897 | "stopping trace run.\n"); | |
3898 | stop_tracing (); | |
8336d594 PA |
3899 | } |
3900 | } | |
860789c7 | 3901 | } |
230d2906 | 3902 | catch (const gdb_exception_error &exception) |
860789c7 | 3903 | { |
608a1e46 | 3904 | fflush (stdout); |
3d6e9d23 | 3905 | fprintf (stderr, "gdbserver: %s\n", exception.what ()); |
608a1e46 | 3906 | |
860789c7 | 3907 | if (response_needed) |
8336d594 | 3908 | { |
c12a5089 SC |
3909 | write_enn (cs.own_buf); |
3910 | putpkt (cs.own_buf); | |
8336d594 | 3911 | } |
608a1e46 PA |
3912 | |
3913 | if (run_once) | |
3914 | throw_quit ("Quit"); | |
8336d594 | 3915 | } |
bd99dc85 PA |
3916 | } |
3917 | } | |
01f9e8fa | 3918 | |
860789c7 GB |
3919 | /* Main function. */ |
3920 | ||
3921 | int | |
3922 | main (int argc, char *argv[]) | |
3923 | { | |
860789c7 | 3924 | |
a70b8144 | 3925 | try |
860789c7 GB |
3926 | { |
3927 | captured_main (argc, argv); | |
3928 | } | |
230d2906 | 3929 | catch (const gdb_exception &exception) |
860789c7 | 3930 | { |
492d29ea PA |
3931 | if (exception.reason == RETURN_ERROR) |
3932 | { | |
3933 | fflush (stdout); | |
3d6e9d23 | 3934 | fprintf (stderr, "%s\n", exception.what ()); |
492d29ea PA |
3935 | fprintf (stderr, "Exiting\n"); |
3936 | exit_code = 1; | |
3937 | } | |
3938 | ||
3939 | exit (exit_code); | |
860789c7 GB |
3940 | } |
3941 | ||
492d29ea | 3942 | gdb_assert_not_reached ("captured_main should never return"); |
860789c7 GB |
3943 | } |
3944 | ||
802e8e6d PA |
3945 | /* Process options coming from Z packets for a breakpoint. PACKET is |
3946 | the packet buffer. *PACKET is updated to point to the first char | |
3947 | after the last processed option. */ | |
9f3a5c85 LM |
3948 | |
3949 | static void | |
256642e8 | 3950 | process_point_options (struct gdb_breakpoint *bp, const char **packet) |
9f3a5c85 | 3951 | { |
256642e8 | 3952 | const char *dataptr = *packet; |
d3ce09f5 | 3953 | int persist; |
9f3a5c85 LM |
3954 | |
3955 | /* Check if data has the correct format. */ | |
3956 | if (*dataptr != ';') | |
3957 | return; | |
3958 | ||
3959 | dataptr++; | |
3960 | ||
3961 | while (*dataptr) | |
3962 | { | |
d3ce09f5 SS |
3963 | if (*dataptr == ';') |
3964 | ++dataptr; | |
3965 | ||
3966 | if (*dataptr == 'X') | |
9f3a5c85 | 3967 | { |
d3ce09f5 | 3968 | /* Conditional expression. */ |
d171ca78 | 3969 | if (debug_threads) |
87ce2a04 | 3970 | debug_printf ("Found breakpoint condition.\n"); |
802e8e6d | 3971 | if (!add_breakpoint_condition (bp, &dataptr)) |
8424cc97 | 3972 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 | 3973 | } |
61012eef | 3974 | else if (startswith (dataptr, "cmds:")) |
d3ce09f5 SS |
3975 | { |
3976 | dataptr += strlen ("cmds:"); | |
3977 | if (debug_threads) | |
87ce2a04 | 3978 | debug_printf ("Found breakpoint commands %s.\n", dataptr); |
d3ce09f5 SS |
3979 | persist = (*dataptr == '1'); |
3980 | dataptr += 2; | |
802e8e6d | 3981 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
8424cc97 | 3982 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 SS |
3983 | } |
3984 | else | |
3985 | { | |
d3ce09f5 SS |
3986 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
3987 | *dataptr); | |
78a99e91 | 3988 | /* Skip tokens until we find one that we recognize. */ |
8424cc97 | 3989 | dataptr = strchrnul (dataptr, ';'); |
9f3a5c85 | 3990 | } |
9f3a5c85 LM |
3991 | } |
3992 | *packet = dataptr; | |
3993 | } | |
3994 | ||
bd99dc85 PA |
3995 | /* Event loop callback that handles a serial event. The first byte in |
3996 | the serial buffer gets us here. We expect characters to arrive at | |
3997 | a brisk pace, so we read the rest of the packet with a blocking | |
3998 | getpkt call. */ | |
01f9e8fa | 3999 | |
8336d594 | 4000 | static int |
bd99dc85 PA |
4001 | process_serial_event (void) |
4002 | { | |
c12a5089 | 4003 | client_state &cs = get_client_state (); |
bd99dc85 PA |
4004 | int signal; |
4005 | unsigned int len; | |
4006 | CORE_ADDR mem_addr; | |
4007 | unsigned char sig; | |
4008 | int packet_len; | |
4009 | int new_packet_len = -1; | |
4010 | ||
bd99dc85 PA |
4011 | disable_async_io (); |
4012 | ||
3e6ec53a | 4013 | response_needed = false; |
c12a5089 | 4014 | packet_len = getpkt (cs.own_buf); |
bd99dc85 PA |
4015 | if (packet_len <= 0) |
4016 | { | |
bd99dc85 | 4017 | remote_close (); |
8336d594 PA |
4018 | /* Force an event loop break. */ |
4019 | return -1; | |
bd99dc85 | 4020 | } |
3e6ec53a | 4021 | response_needed = true; |
bd99dc85 | 4022 | |
c12a5089 | 4023 | char ch = cs.own_buf[0]; |
bd99dc85 PA |
4024 | switch (ch) |
4025 | { | |
4026 | case 'q': | |
c12a5089 | 4027 | handle_query (cs.own_buf, packet_len, &new_packet_len); |
bd99dc85 PA |
4028 | break; |
4029 | case 'Q': | |
c12a5089 | 4030 | handle_general_set (cs.own_buf); |
bd99dc85 PA |
4031 | break; |
4032 | case 'D': | |
c12a5089 | 4033 | handle_detach (cs.own_buf); |
bd99dc85 PA |
4034 | break; |
4035 | case '!': | |
3e6ec53a | 4036 | extended_protocol = true; |
c12a5089 | 4037 | write_ok (cs.own_buf); |
bd99dc85 PA |
4038 | break; |
4039 | case '?': | |
c12a5089 | 4040 | handle_status (cs.own_buf); |
bd99dc85 PA |
4041 | break; |
4042 | case 'H': | |
c12a5089 | 4043 | if (cs.own_buf[1] == 'c' || cs.own_buf[1] == 'g' || cs.own_buf[1] == 's') |
bd99dc85 | 4044 | { |
c12a5089 | 4045 | require_running_or_break (cs.own_buf); |
95954743 | 4046 | |
c12a5089 | 4047 | ptid_t thread_id = read_ptid (&cs.own_buf[2], NULL); |
95954743 | 4048 | |
96cde54f | 4049 | if (thread_id == null_ptid || thread_id == minus_one_ptid) |
95954743 | 4050 | thread_id = null_ptid; |
96cde54f | 4051 | else if (thread_id.is_pid ()) |
95954743 | 4052 | { |
96cde54f SM |
4053 | /* The ptid represents a pid. */ |
4054 | thread_info *thread = find_any_thread_of_pid (thread_id.pid ()); | |
785922a5 SM |
4055 | |
4056 | if (thread == NULL) | |
95954743 | 4057 | { |
c12a5089 | 4058 | write_enn (cs.own_buf); |
95954743 PA |
4059 | break; |
4060 | } | |
4061 | ||
9c80ecd6 | 4062 | thread_id = thread->id; |
95954743 | 4063 | } |
bd99dc85 PA |
4064 | else |
4065 | { | |
96cde54f SM |
4066 | /* The ptid represents a lwp/tid. */ |
4067 | if (find_thread_ptid (thread_id) == NULL) | |
c906108c | 4068 | { |
c12a5089 | 4069 | write_enn (cs.own_buf); |
c906108c SS |
4070 | break; |
4071 | } | |
c906108c SS |
4072 | } |
4073 | ||
c12a5089 | 4074 | if (cs.own_buf[1] == 'g') |
c906108c | 4075 | { |
d7e15655 | 4076 | if (thread_id == null_ptid) |
c906108c | 4077 | { |
bd99dc85 PA |
4078 | /* GDB is telling us to choose any thread. Check if |
4079 | the currently selected thread is still valid. If | |
4080 | it is not, select the first available. */ | |
c12a5089 | 4081 | thread_info *thread = find_thread_ptid (cs.general_thread); |
bd99dc85 | 4082 | if (thread == NULL) |
f0db101d | 4083 | thread = get_first_thread (); |
9c80ecd6 | 4084 | thread_id = thread->id; |
c906108c | 4085 | } |
bd99dc85 | 4086 | |
c12a5089 | 4087 | cs.general_thread = thread_id; |
f557a88a | 4088 | set_desired_thread (); |
f0db101d | 4089 | gdb_assert (current_thread != NULL); |
c906108c | 4090 | } |
c12a5089 SC |
4091 | else if (cs.own_buf[1] == 'c') |
4092 | cs.cont_thread = thread_id; | |
c906108c | 4093 | |
c12a5089 | 4094 | write_ok (cs.own_buf); |
bd99dc85 PA |
4095 | } |
4096 | else | |
4097 | { | |
4098 | /* Silently ignore it so that gdb can extend the protocol | |
4099 | without compatibility headaches. */ | |
c12a5089 | 4100 | cs.own_buf[0] = '\0'; |
2d717e4f | 4101 | } |
bd99dc85 PA |
4102 | break; |
4103 | case 'g': | |
c12a5089 SC |
4104 | require_running_or_break (cs.own_buf); |
4105 | if (cs.current_traceframe >= 0) | |
219f2f23 | 4106 | { |
3aee8918 PA |
4107 | struct regcache *regcache |
4108 | = new_register_cache (current_target_desc ()); | |
219f2f23 | 4109 | |
c12a5089 | 4110 | if (fetch_traceframe_registers (cs.current_traceframe, |
219f2f23 | 4111 | regcache, -1) == 0) |
c12a5089 | 4112 | registers_to_string (regcache, cs.own_buf); |
219f2f23 | 4113 | else |
c12a5089 | 4114 | write_enn (cs.own_buf); |
219f2f23 PA |
4115 | free_register_cache (regcache); |
4116 | } | |
4117 | else | |
4118 | { | |
4119 | struct regcache *regcache; | |
4120 | ||
f557a88a | 4121 | if (!set_desired_thread ()) |
c12a5089 | 4122 | write_enn (cs.own_buf); |
f0db101d PA |
4123 | else |
4124 | { | |
4125 | regcache = get_thread_regcache (current_thread, 1); | |
c12a5089 | 4126 | registers_to_string (regcache, cs.own_buf); |
f0db101d | 4127 | } |
219f2f23 | 4128 | } |
bd99dc85 PA |
4129 | break; |
4130 | case 'G': | |
c12a5089 SC |
4131 | require_running_or_break (cs.own_buf); |
4132 | if (cs.current_traceframe >= 0) | |
4133 | write_enn (cs.own_buf); | |
219f2f23 PA |
4134 | else |
4135 | { | |
442ea881 PA |
4136 | struct regcache *regcache; |
4137 | ||
f557a88a | 4138 | if (!set_desired_thread ()) |
c12a5089 | 4139 | write_enn (cs.own_buf); |
f0db101d PA |
4140 | else |
4141 | { | |
4142 | regcache = get_thread_regcache (current_thread, 1); | |
c12a5089 SC |
4143 | registers_from_string (regcache, &cs.own_buf[1]); |
4144 | write_ok (cs.own_buf); | |
f0db101d | 4145 | } |
442ea881 | 4146 | } |
bd99dc85 PA |
4147 | break; |
4148 | case 'm': | |
da4ae14a TT |
4149 | { |
4150 | require_running_or_break (cs.own_buf); | |
4151 | decode_m_packet (&cs.own_buf[1], &mem_addr, &len); | |
4152 | int res = gdb_read_memory (mem_addr, mem_buf, len); | |
4153 | if (res < 0) | |
4154 | write_enn (cs.own_buf); | |
4155 | else | |
4156 | bin2hex (mem_buf, cs.own_buf, res); | |
4157 | } | |
bd99dc85 PA |
4158 | break; |
4159 | case 'M': | |
c12a5089 SC |
4160 | require_running_or_break (cs.own_buf); |
4161 | decode_M_packet (&cs.own_buf[1], &mem_addr, &len, &mem_buf); | |
90d74c30 | 4162 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
c12a5089 | 4163 | write_ok (cs.own_buf); |
bd99dc85 | 4164 | else |
c12a5089 | 4165 | write_enn (cs.own_buf); |
bd99dc85 PA |
4166 | break; |
4167 | case 'X': | |
c12a5089 SC |
4168 | require_running_or_break (cs.own_buf); |
4169 | if (decode_X_packet (&cs.own_buf[1], packet_len - 1, | |
fa593d66 | 4170 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 4171 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
c12a5089 | 4172 | write_enn (cs.own_buf); |
bd99dc85 | 4173 | else |
c12a5089 | 4174 | write_ok (cs.own_buf); |
bd99dc85 PA |
4175 | break; |
4176 | case 'C': | |
c12a5089 SC |
4177 | require_running_or_break (cs.own_buf); |
4178 | hex2bin (cs.own_buf + 1, &sig, 1); | |
e053fbc4 PA |
4179 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4180 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4181 | else |
4182 | signal = 0; | |
c12a5089 | 4183 | myresume (cs.own_buf, 0, signal); |
bd99dc85 PA |
4184 | break; |
4185 | case 'S': | |
c12a5089 SC |
4186 | require_running_or_break (cs.own_buf); |
4187 | hex2bin (cs.own_buf + 1, &sig, 1); | |
e053fbc4 PA |
4188 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4189 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4190 | else |
4191 | signal = 0; | |
c12a5089 | 4192 | myresume (cs.own_buf, 1, signal); |
bd99dc85 PA |
4193 | break; |
4194 | case 'c': | |
c12a5089 | 4195 | require_running_or_break (cs.own_buf); |
bd99dc85 | 4196 | signal = 0; |
c12a5089 | 4197 | myresume (cs.own_buf, 0, signal); |
bd99dc85 PA |
4198 | break; |
4199 | case 's': | |
c12a5089 | 4200 | require_running_or_break (cs.own_buf); |
bd99dc85 | 4201 | signal = 0; |
c12a5089 | 4202 | myresume (cs.own_buf, 1, signal); |
bd99dc85 | 4203 | break; |
c6314022 AR |
4204 | case 'Z': /* insert_ ... */ |
4205 | /* Fallthrough. */ | |
4206 | case 'z': /* remove_ ... */ | |
bd99dc85 | 4207 | { |
bd99dc85 | 4208 | char *dataptr; |
aca22551 | 4209 | ULONGEST addr; |
27165294 | 4210 | int kind; |
c12a5089 | 4211 | char type = cs.own_buf[1]; |
c6314022 | 4212 | int res; |
d993e290 | 4213 | const int insert = ch == 'Z'; |
c12a5089 | 4214 | const char *p = &cs.own_buf[3]; |
aca22551 PA |
4215 | |
4216 | p = unpack_varlen_hex (p, &addr); | |
27165294 | 4217 | kind = strtol (p + 1, &dataptr, 16); |
c6314022 | 4218 | |
802e8e6d | 4219 | if (insert) |
d993e290 | 4220 | { |
9aa76cd0 | 4221 | struct gdb_breakpoint *bp; |
802e8e6d | 4222 | |
27165294 | 4223 | bp = set_gdb_breakpoint (type, addr, kind, &res); |
802e8e6d | 4224 | if (bp != NULL) |
9f3a5c85 | 4225 | { |
802e8e6d PA |
4226 | res = 0; |
4227 | ||
4228 | /* GDB may have sent us a list of *point parameters to | |
4229 | be evaluated on the target's side. Read such list | |
4230 | here. If we already have a list of parameters, GDB | |
4231 | is telling us to drop that list and use this one | |
4232 | instead. */ | |
0a261ed8 | 4233 | clear_breakpoint_conditions_and_commands (bp); |
256642e8 PA |
4234 | const char *options = dataptr; |
4235 | process_point_options (bp, &options); | |
9f3a5c85 | 4236 | } |
d993e290 | 4237 | } |
802e8e6d | 4238 | else |
27165294 | 4239 | res = delete_gdb_breakpoint (type, addr, kind); |
bd99dc85 | 4240 | |
c6314022 | 4241 | if (res == 0) |
c12a5089 | 4242 | write_ok (cs.own_buf); |
c6314022 AR |
4243 | else if (res == 1) |
4244 | /* Unsupported. */ | |
c12a5089 | 4245 | cs.own_buf[0] = '\0'; |
bd99dc85 | 4246 | else |
c12a5089 | 4247 | write_enn (cs.own_buf); |
bd99dc85 PA |
4248 | break; |
4249 | } | |
4250 | case 'k': | |
3e6ec53a | 4251 | response_needed = false; |
bd99dc85 | 4252 | if (!target_running ()) |
95954743 PA |
4253 | /* The packet we received doesn't make sense - but we can't |
4254 | reply to it, either. */ | |
8336d594 | 4255 | return 0; |
c906108c | 4256 | |
95954743 | 4257 | fprintf (stderr, "Killing all inferiors\n"); |
9179355e SM |
4258 | |
4259 | for_each_process (kill_inferior_callback); | |
c906108c | 4260 | |
bd99dc85 PA |
4261 | /* When using the extended protocol, we wait with no program |
4262 | running. The traditional protocol will exit instead. */ | |
4263 | if (extended_protocol) | |
4264 | { | |
c12a5089 SC |
4265 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
4266 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
8336d594 | 4267 | return 0; |
bd99dc85 PA |
4268 | } |
4269 | else | |
8336d594 PA |
4270 | exit (0); |
4271 | ||
bd99dc85 PA |
4272 | case 'T': |
4273 | { | |
c12a5089 | 4274 | require_running_or_break (cs.own_buf); |
95954743 | 4275 | |
c12a5089 | 4276 | ptid_t thread_id = read_ptid (&cs.own_buf[1], NULL); |
96cde54f | 4277 | if (find_thread_ptid (thread_id) == NULL) |
bd99dc85 | 4278 | { |
c12a5089 | 4279 | write_enn (cs.own_buf); |
bd99dc85 PA |
4280 | break; |
4281 | } | |
4282 | ||
4283 | if (mythread_alive (thread_id)) | |
c12a5089 | 4284 | write_ok (cs.own_buf); |
bd99dc85 | 4285 | else |
c12a5089 | 4286 | write_enn (cs.own_buf); |
bd99dc85 PA |
4287 | } |
4288 | break; | |
4289 | case 'R': | |
3e6ec53a | 4290 | response_needed = false; |
bd99dc85 PA |
4291 | |
4292 | /* Restarting the inferior is only supported in the extended | |
4293 | protocol. */ | |
4294 | if (extended_protocol) | |
4295 | { | |
4296 | if (target_running ()) | |
9179355e SM |
4297 | for_each_process (kill_inferior_callback); |
4298 | ||
bd99dc85 PA |
4299 | fprintf (stderr, "GDBserver restarting\n"); |
4300 | ||
4301 | /* Wait till we are at 1st instruction in prog. */ | |
25e3c82c | 4302 | if (program_path.get () != NULL) |
51aee833 | 4303 | { |
25e3c82c | 4304 | create_inferior (program_path.get (), program_args); |
2090129c | 4305 | |
c12a5089 | 4306 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
51aee833 YQ |
4307 | { |
4308 | /* Stopped at the first instruction of the target | |
4309 | process. */ | |
c12a5089 | 4310 | cs.general_thread = cs.last_ptid; |
51aee833 YQ |
4311 | } |
4312 | else | |
4313 | { | |
4314 | /* Something went wrong. */ | |
c12a5089 | 4315 | cs.general_thread = null_ptid; |
51aee833 YQ |
4316 | } |
4317 | } | |
bd99dc85 PA |
4318 | else |
4319 | { | |
c12a5089 SC |
4320 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
4321 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
bd99dc85 | 4322 | } |
8336d594 | 4323 | return 0; |
c906108c SS |
4324 | } |
4325 | else | |
4326 | { | |
bd99dc85 PA |
4327 | /* It is a request we don't understand. Respond with an |
4328 | empty packet so that gdb knows that we don't support this | |
4329 | request. */ | |
c12a5089 | 4330 | cs.own_buf[0] = '\0'; |
bd99dc85 PA |
4331 | break; |
4332 | } | |
4333 | case 'v': | |
4334 | /* Extended (long) request. */ | |
c12a5089 | 4335 | handle_v_requests (cs.own_buf, packet_len, &new_packet_len); |
bd99dc85 PA |
4336 | break; |
4337 | ||
4338 | default: | |
4339 | /* It is a request we don't understand. Respond with an empty | |
4340 | packet so that gdb knows that we don't support this | |
4341 | request. */ | |
c12a5089 | 4342 | cs.own_buf[0] = '\0'; |
bd99dc85 PA |
4343 | break; |
4344 | } | |
4345 | ||
4346 | if (new_packet_len != -1) | |
c12a5089 | 4347 | putpkt_binary (cs.own_buf, new_packet_len); |
bd99dc85 | 4348 | else |
c12a5089 | 4349 | putpkt (cs.own_buf); |
bd99dc85 | 4350 | |
3e6ec53a | 4351 | response_needed = false; |
bd99dc85 | 4352 | |
8336d594 PA |
4353 | if (exit_requested) |
4354 | return -1; | |
4355 | ||
4356 | return 0; | |
c906108c | 4357 | } |
bd99dc85 PA |
4358 | |
4359 | /* Event-loop callback for serial events. */ | |
4360 | ||
8336d594 | 4361 | int |
bd99dc85 PA |
4362 | handle_serial_event (int err, gdb_client_data client_data) |
4363 | { | |
4364 | if (debug_threads) | |
87ce2a04 | 4365 | debug_printf ("handling possible serial event\n"); |
bd99dc85 PA |
4366 | |
4367 | /* Really handle it. */ | |
8336d594 PA |
4368 | if (process_serial_event () < 0) |
4369 | return -1; | |
bd99dc85 | 4370 | |
0bfdf32f | 4371 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4372 | Important in the non-stop mode asynchronous protocol. */ |
f557a88a | 4373 | set_desired_thread (); |
8336d594 PA |
4374 | |
4375 | return 0; | |
bd99dc85 PA |
4376 | } |
4377 | ||
f2faf941 PA |
4378 | /* Push a stop notification on the notification queue. */ |
4379 | ||
4380 | static void | |
4381 | push_stop_notification (ptid_t ptid, struct target_waitstatus *status) | |
4382 | { | |
b494cdff | 4383 | struct vstop_notif *vstop_notif = new struct vstop_notif; |
f2faf941 PA |
4384 | |
4385 | vstop_notif->status = *status; | |
4386 | vstop_notif->ptid = ptid; | |
4387 | /* Push Stop notification. */ | |
b494cdff | 4388 | notif_push (¬if_stop, vstop_notif); |
f2faf941 PA |
4389 | } |
4390 | ||
bd99dc85 PA |
4391 | /* Event-loop callback for target events. */ |
4392 | ||
8336d594 | 4393 | int |
bd99dc85 PA |
4394 | handle_target_event (int err, gdb_client_data client_data) |
4395 | { | |
c12a5089 | 4396 | client_state &cs = get_client_state (); |
bd99dc85 | 4397 | if (debug_threads) |
87ce2a04 | 4398 | debug_printf ("handling possible target event\n"); |
bd99dc85 | 4399 | |
c12a5089 | 4400 | cs.last_ptid = mywait (minus_one_ptid, &cs.last_status, |
95954743 | 4401 | TARGET_WNOHANG, 1); |
bd99dc85 | 4402 | |
c12a5089 | 4403 | if (cs.last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
fa96cb38 | 4404 | { |
f2faf941 | 4405 | if (gdb_connected () && report_no_resumed) |
c12a5089 | 4406 | push_stop_notification (null_ptid, &cs.last_status); |
fa96cb38 | 4407 | } |
c12a5089 | 4408 | else if (cs.last_status.kind != TARGET_WAITKIND_IGNORE) |
bd99dc85 | 4409 | { |
e99b03dc | 4410 | int pid = cs.last_ptid.pid (); |
8336d594 PA |
4411 | struct process_info *process = find_process_pid (pid); |
4412 | int forward_event = !gdb_connected () || process->gdb_detached; | |
4413 | ||
c12a5089 SC |
4414 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
4415 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
4416 | { |
4417 | mark_breakpoints_out (process); | |
c12a5089 | 4418 | target_mourn_inferior (cs.last_ptid); |
f9e39928 | 4419 | } |
c12a5089 | 4420 | else if (cs.last_status.kind == TARGET_WAITKIND_THREAD_EXITED) |
65706a29 | 4421 | ; |
ce1a5b52 | 4422 | else |
d20a8ad9 PA |
4423 | { |
4424 | /* We're reporting this thread as stopped. Update its | |
4425 | "want-stopped" state to what the client wants, until it | |
4426 | gets a new resume action. */ | |
0bfdf32f | 4427 | current_thread->last_resume_kind = resume_stop; |
c12a5089 | 4428 | current_thread->last_status = cs.last_status; |
d20a8ad9 | 4429 | } |
8336d594 PA |
4430 | |
4431 | if (forward_event) | |
4432 | { | |
4433 | if (!target_running ()) | |
4434 | { | |
4435 | /* The last process exited. We're done. */ | |
4436 | exit (0); | |
4437 | } | |
4438 | ||
c12a5089 SC |
4439 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
4440 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED | |
4441 | || cs.last_status.kind == TARGET_WAITKIND_THREAD_EXITED) | |
65706a29 PA |
4442 | ; |
4443 | else | |
8336d594 PA |
4444 | { |
4445 | /* A thread stopped with a signal, but gdb isn't | |
4446 | connected to handle it. Pass it down to the | |
4447 | inferior, as if it wasn't being traced. */ | |
049a8570 | 4448 | enum gdb_signal signal; |
8336d594 PA |
4449 | |
4450 | if (debug_threads) | |
87ce2a04 DE |
4451 | debug_printf ("GDB not connected; forwarding event %d for" |
4452 | " [%s]\n", | |
c12a5089 SC |
4453 | (int) cs.last_status.kind, |
4454 | target_pid_to_str (cs.last_ptid)); | |
8336d594 | 4455 | |
c12a5089 SC |
4456 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
4457 | signal = cs.last_status.value.sig; | |
65706a29 | 4458 | else |
049a8570 | 4459 | signal = GDB_SIGNAL_0; |
c12a5089 | 4460 | target_continue (cs.last_ptid, signal); |
8336d594 | 4461 | } |
8336d594 PA |
4462 | } |
4463 | else | |
c12a5089 | 4464 | push_stop_notification (cs.last_ptid, &cs.last_status); |
bd99dc85 PA |
4465 | } |
4466 | ||
0bfdf32f | 4467 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4468 | Important in the non-stop mode asynchronous protocol. */ |
f557a88a | 4469 | set_desired_thread (); |
8336d594 PA |
4470 | |
4471 | return 0; | |
bd99dc85 | 4472 | } |
6d580b63 YQ |
4473 | |
4474 | #if GDB_SELF_TEST | |
4475 | namespace selftests | |
4476 | { | |
4477 | ||
4478 | void | |
4479 | reset () | |
4480 | {} | |
4481 | ||
4482 | } // namespace selftests | |
4483 | #endif /* GDB_SELF_TEST */ |