Commit | Line | Data |
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c906108c | 1 | /* Main code for remote server for GDB. |
b811d2c2 | 2 | Copyright (C) 1989-2020 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "server.h" | |
623b6bdf | 20 | #include "gdbthread.h" |
268a13a5 | 21 | #include "gdbsupport/agent.h" |
14a00470 | 22 | #include "notif.h" |
3aee8918 | 23 | #include "tdesc.h" |
268a13a5 TT |
24 | #include "gdbsupport/rsp-low.h" |
25 | #include "gdbsupport/signals-state-save-restore.h" | |
87ce2a04 | 26 | #include <ctype.h> |
a9fa9f7d | 27 | #include <unistd.h> |
68070c10 | 28 | #if HAVE_SIGNAL_H |
a9fa9f7d | 29 | #include <signal.h> |
68070c10 | 30 | #endif |
268a13a5 TT |
31 | #include "gdbsupport/gdb_vecs.h" |
32 | #include "gdbsupport/gdb_wait.h" | |
33 | #include "gdbsupport/btrace-common.h" | |
34 | #include "gdbsupport/filestuff.h" | |
c144c7a0 | 35 | #include "tracepoint.h" |
799cdc37 | 36 | #include "dll.h" |
533b0600 | 37 | #include "hostio.h" |
7c5ded6a | 38 | #include <vector> |
268a13a5 TT |
39 | #include "gdbsupport/common-inferior.h" |
40 | #include "gdbsupport/job-control.h" | |
41 | #include "gdbsupport/environ.h" | |
25e3c82c | 42 | #include "filenames.h" |
268a13a5 | 43 | #include "gdbsupport/pathstuff.h" |
fec4e896 CB |
44 | #ifdef USE_XML |
45 | #include "xml-builtin.h" | |
46 | #endif | |
2090129c | 47 | |
268a13a5 TT |
48 | #include "gdbsupport/selftest.h" |
49 | #include "gdbsupport/scope-exit.h" | |
6d580b63 | 50 | |
f8a4e119 SM |
51 | #define require_running_or_return(BUF) \ |
52 | if (!target_running ()) \ | |
53 | { \ | |
54 | write_enn (BUF); \ | |
55 | return; \ | |
56 | } | |
57 | ||
58 | #define require_running_or_break(BUF) \ | |
59 | if (!target_running ()) \ | |
60 | { \ | |
61 | write_enn (BUF); \ | |
62 | break; \ | |
63 | } | |
64 | ||
b4987c95 SDJ |
65 | /* String containing the current directory (what getwd would return). */ |
66 | ||
67 | char *current_directory; | |
68 | ||
2090129c SDJ |
69 | /* The environment to pass to the inferior when creating it. */ |
70 | ||
9a6c7d9c | 71 | static gdb_environ our_environ; |
2090129c | 72 | |
3e6ec53a | 73 | bool server_waiting; |
0d62e5e8 | 74 | |
3e6ec53a CB |
75 | static bool extended_protocol; |
76 | static bool response_needed; | |
77 | static bool exit_requested; | |
2d717e4f | 78 | |
03f2bd59 | 79 | /* --once: Exit after the first connection has closed. */ |
3e6ec53a | 80 | bool run_once; |
03f2bd59 | 81 | |
30baf67b | 82 | /* Whether to report TARGET_WAITKIND_NO_RESUMED events. */ |
3e6ec53a | 83 | static bool report_no_resumed; |
f2faf941 | 84 | |
3e6ec53a | 85 | bool non_stop; |
03583c20 | 86 | |
25e3c82c SDJ |
87 | static struct { |
88 | /* Set the PROGRAM_PATH. Here we adjust the path of the provided | |
89 | binary if needed. */ | |
90 | void set (gdb::unique_xmalloc_ptr<char> &&path) | |
91 | { | |
92 | m_path = std::move (path); | |
93 | ||
94 | /* Make sure we're using the absolute path of the inferior when | |
95 | creating it. */ | |
96 | if (!contains_dir_separator (m_path.get ())) | |
97 | { | |
98 | int reg_file_errno; | |
99 | ||
100 | /* Check if the file is in our CWD. If it is, then we prefix | |
101 | its name with CURRENT_DIRECTORY. Otherwise, we leave the | |
102 | name as-is because we'll try searching for it in $PATH. */ | |
103 | if (is_regular_file (m_path.get (), ®_file_errno)) | |
104 | m_path = gdb_abspath (m_path.get ()); | |
105 | } | |
106 | } | |
107 | ||
108 | /* Return the PROGRAM_PATH. */ | |
109 | char *get () | |
110 | { return m_path.get (); } | |
111 | ||
112 | private: | |
113 | /* The program name, adjusted if needed. */ | |
114 | gdb::unique_xmalloc_ptr<char> m_path; | |
115 | } program_path; | |
2090129c SDJ |
116 | static std::vector<char *> program_args; |
117 | static std::string wrapper_argv; | |
2d717e4f | 118 | |
a9fa9f7d DJ |
119 | /* The PID of the originally created or attached inferior. Used to |
120 | send signals to the process when GDB sends us an asynchronous interrupt | |
121 | (user hitting Control-C in the client), and to wait for the child to exit | |
122 | when no longer debugging it. */ | |
123 | ||
a1928bad | 124 | unsigned long signal_pid; |
a9fa9f7d | 125 | |
ec56be1b PA |
126 | /* Set if you want to disable optional thread related packets support |
127 | in gdbserver, for the sake of testing GDB against stubs that don't | |
128 | support them. */ | |
3e6ec53a CB |
129 | bool disable_packet_vCont; |
130 | bool disable_packet_Tthread; | |
131 | bool disable_packet_qC; | |
132 | bool disable_packet_qfThreadInfo; | |
ec56be1b | 133 | |
bd99dc85 PA |
134 | static unsigned char *mem_buf; |
135 | ||
14a00470 YQ |
136 | /* A sub-class of 'struct notif_event' for stop, holding information |
137 | relative to a single stop reply. We keep a queue of these to | |
138 | push to GDB in non-stop mode. */ | |
139 | ||
b494cdff | 140 | struct vstop_notif : public notif_event |
bd99dc85 | 141 | { |
bd99dc85 | 142 | /* Thread or process that got the event. */ |
95954743 | 143 | ptid_t ptid; |
bd99dc85 PA |
144 | |
145 | /* Event info. */ | |
146 | struct target_waitstatus status; | |
147 | }; | |
148 | ||
f4abbc16 MM |
149 | /* The current btrace configuration. This is gdbserver's mirror of GDB's |
150 | btrace configuration. */ | |
151 | static struct btrace_config current_btrace_conf; | |
152 | ||
c12a5089 SC |
153 | /* The client remote protocol state. */ |
154 | ||
155 | static client_state g_client_state; | |
156 | ||
157 | client_state & | |
158 | get_client_state () | |
159 | { | |
160 | client_state &cs = g_client_state; | |
161 | return cs; | |
162 | } | |
163 | ||
164 | ||
bd99dc85 PA |
165 | /* Put a stop reply to the stop reply queue. */ |
166 | ||
167 | static void | |
95954743 | 168 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 169 | { |
b494cdff | 170 | struct vstop_notif *new_notif = new struct vstop_notif; |
bd99dc85 | 171 | |
bd99dc85 PA |
172 | new_notif->ptid = ptid; |
173 | new_notif->status = *status; | |
174 | ||
b494cdff | 175 | notif_event_enque (¬if_stop, new_notif); |
bd99dc85 PA |
176 | } |
177 | ||
b494cdff TT |
178 | static bool |
179 | remove_all_on_match_ptid (struct notif_event *event, ptid_t filter_ptid) | |
bd99dc85 | 180 | { |
465a859e | 181 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; |
d20a8ad9 | 182 | |
b494cdff | 183 | return vstop_event->ptid.matches (filter_ptid); |
bd99dc85 PA |
184 | } |
185 | ||
465a859e | 186 | /* See server.h. */ |
bd99dc85 | 187 | |
465a859e PA |
188 | void |
189 | discard_queued_stop_replies (ptid_t ptid) | |
bd99dc85 | 190 | { |
b494cdff TT |
191 | std::list<notif_event *>::iterator iter, next, end; |
192 | end = notif_stop.queue.end (); | |
193 | for (iter = notif_stop.queue.begin (); iter != end; iter = next) | |
194 | { | |
195 | next = iter; | |
196 | ++next; | |
197 | ||
198 | if (remove_all_on_match_ptid (*iter, ptid)) | |
199 | { | |
200 | delete *iter; | |
201 | notif_stop.queue.erase (iter); | |
202 | } | |
203 | } | |
bd99dc85 PA |
204 | } |
205 | ||
bd99dc85 | 206 | static void |
14a00470 | 207 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 208 | { |
14a00470 YQ |
209 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
210 | ||
211 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
212 | } |
213 | ||
b494cdff | 214 | /* Helper for in_queued_stop_replies. */ |
5a04c4cf | 215 | |
b494cdff TT |
216 | static bool |
217 | in_queued_stop_replies_ptid (struct notif_event *event, ptid_t filter_ptid) | |
5a04c4cf | 218 | { |
5a04c4cf PA |
219 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; |
220 | ||
26a57c92 | 221 | if (vstop_event->ptid.matches (filter_ptid)) |
b494cdff | 222 | return true; |
5a04c4cf PA |
223 | |
224 | /* Don't resume fork children that GDB does not know about yet. */ | |
225 | if ((vstop_event->status.kind == TARGET_WAITKIND_FORKED | |
226 | || vstop_event->status.kind == TARGET_WAITKIND_VFORKED) | |
26a57c92 | 227 | && vstop_event->status.value.related_pid.matches (filter_ptid)) |
b494cdff | 228 | return true; |
5a04c4cf | 229 | |
b494cdff | 230 | return false; |
5a04c4cf PA |
231 | } |
232 | ||
233 | /* See server.h. */ | |
234 | ||
235 | int | |
236 | in_queued_stop_replies (ptid_t ptid) | |
237 | { | |
b494cdff TT |
238 | for (notif_event *event : notif_stop.queue) |
239 | { | |
240 | if (in_queued_stop_replies_ptid (event, ptid)) | |
241 | return true; | |
242 | } | |
243 | ||
244 | return false; | |
5a04c4cf PA |
245 | } |
246 | ||
14a00470 YQ |
247 | struct notif_server notif_stop = |
248 | { | |
b494cdff | 249 | "vStopped", "Stop", {}, vstop_notif_reply, |
14a00470 YQ |
250 | }; |
251 | ||
2d717e4f DJ |
252 | static int |
253 | target_running (void) | |
254 | { | |
649ebbca | 255 | return get_first_thread () != NULL; |
2d717e4f DJ |
256 | } |
257 | ||
268a13a5 | 258 | /* See gdbsupport/common-inferior.h. */ |
ccd213ac | 259 | |
2090129c SDJ |
260 | const char * |
261 | get_exec_wrapper () | |
262 | { | |
263 | return !wrapper_argv.empty () ? wrapper_argv.c_str () : NULL; | |
264 | } | |
eb97750b | 265 | |
268a13a5 | 266 | /* See gdbsupport/common-inferior.h. */ |
eb97750b | 267 | |
d9fa87f4 | 268 | const char * |
2090129c SDJ |
269 | get_exec_file (int err) |
270 | { | |
25e3c82c | 271 | if (err && program_path.get () == NULL) |
2090129c | 272 | error (_("No executable file specified.")); |
ccd213ac | 273 | |
25e3c82c | 274 | return program_path.get (); |
2090129c | 275 | } |
5b1c542e | 276 | |
2090129c | 277 | /* See server.h. */ |
d20a8ad9 | 278 | |
9a6c7d9c | 279 | gdb_environ * |
2090129c SDJ |
280 | get_environ () |
281 | { | |
9a6c7d9c | 282 | return &our_environ; |
c906108c SS |
283 | } |
284 | ||
45b7b345 | 285 | static int |
5b1c542e | 286 | attach_inferior (int pid) |
45b7b345 | 287 | { |
c12a5089 | 288 | client_state &cs = get_client_state (); |
45b7b345 DJ |
289 | /* myattach should return -1 if attaching is unsupported, |
290 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 291 | |
df0da8a2 AH |
292 | if (find_process_pid (pid) != nullptr) |
293 | error ("Already attached to process %d\n", pid); | |
294 | ||
45b7b345 DJ |
295 | if (myattach (pid) != 0) |
296 | return -1; | |
297 | ||
6910d122 | 298 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 299 | fflush (stderr); |
6910d122 | 300 | |
a9fa9f7d DJ |
301 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
302 | attach function, so that it can be the main thread instead of | |
303 | whichever we were told to attach to. */ | |
304 | signal_pid = pid; | |
305 | ||
bd99dc85 PA |
306 | if (!non_stop) |
307 | { | |
f2907e49 | 308 | cs.last_ptid = mywait (ptid_t (pid), &cs.last_status, 0, 0); |
bd99dc85 PA |
309 | |
310 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
311 | process using the "attach" command, but this is different; it's | |
312 | just using "target remote". Pretend it's just starting up. */ | |
c12a5089 SC |
313 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED |
314 | && cs.last_status.value.sig == GDB_SIGNAL_STOP) | |
315 | cs.last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 | 316 | |
0bfdf32f | 317 | current_thread->last_resume_kind = resume_stop; |
c12a5089 | 318 | current_thread->last_status = cs.last_status; |
bd99dc85 | 319 | } |
9db87ebd | 320 | |
45b7b345 DJ |
321 | return 0; |
322 | } | |
323 | ||
0876f84a DJ |
324 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
325 | or -1 otherwise. */ | |
326 | ||
327 | static int | |
d08aafef | 328 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 329 | { |
d08aafef PA |
330 | /* After the read marker and annex, qXfer looks like a |
331 | traditional 'm' packet. */ | |
332 | decode_m_packet (buf, ofs, len); | |
333 | ||
334 | return 0; | |
335 | } | |
336 | ||
337 | static int | |
338 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
339 | { | |
340 | /* Extract and NUL-terminate the object. */ | |
341 | *object = buf; | |
342 | while (*buf && *buf != ':') | |
343 | buf++; | |
344 | if (*buf == '\0') | |
345 | return -1; | |
346 | *buf++ = 0; | |
347 | ||
348 | /* Extract and NUL-terminate the read/write action. */ | |
349 | *rw = buf; | |
350 | while (*buf && *buf != ':') | |
351 | buf++; | |
352 | if (*buf == '\0') | |
353 | return -1; | |
354 | *buf++ = 0; | |
355 | ||
0876f84a DJ |
356 | /* Extract and NUL-terminate the annex. */ |
357 | *annex = buf; | |
358 | while (*buf && *buf != ':') | |
359 | buf++; | |
360 | if (*buf == '\0') | |
361 | return -1; | |
362 | *buf++ = 0; | |
363 | ||
d08aafef | 364 | *offset = buf; |
0876f84a DJ |
365 | return 0; |
366 | } | |
367 | ||
368 | /* Write the response to a successful qXfer read. Returns the | |
369 | length of the (binary) data stored in BUF, corresponding | |
370 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
371 | the first character of the response. */ | |
372 | static int | |
f98cd059 | 373 | write_qxfer_response (char *buf, const gdb_byte *data, int len, int is_more) |
0876f84a DJ |
374 | { |
375 | int out_len; | |
376 | ||
377 | if (is_more) | |
378 | buf[0] = 'm'; | |
379 | else | |
380 | buf[0] = 'l'; | |
381 | ||
124e13d9 SM |
382 | return remote_escape_output (data, len, 1, (unsigned char *) buf + 1, |
383 | &out_len, PBUFSIZ - 2) + 1; | |
0876f84a DJ |
384 | } |
385 | ||
f4abbc16 | 386 | /* Handle btrace enabling in BTS format. */ |
9accd112 | 387 | |
9ee23a85 | 388 | static void |
f4abbc16 | 389 | handle_btrace_enable_bts (struct thread_info *thread) |
9accd112 MM |
390 | { |
391 | if (thread->btrace != NULL) | |
9ee23a85 | 392 | error (_("Btrace already enabled.")); |
9accd112 | 393 | |
f4abbc16 | 394 | current_btrace_conf.format = BTRACE_FORMAT_BTS; |
9c80ecd6 | 395 | thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf); |
9accd112 MM |
396 | } |
397 | ||
bc504a31 | 398 | /* Handle btrace enabling in Intel Processor Trace format. */ |
b20a6524 | 399 | |
9ee23a85 | 400 | static void |
b20a6524 MM |
401 | handle_btrace_enable_pt (struct thread_info *thread) |
402 | { | |
403 | if (thread->btrace != NULL) | |
9ee23a85 | 404 | error (_("Btrace already enabled.")); |
b20a6524 MM |
405 | |
406 | current_btrace_conf.format = BTRACE_FORMAT_PT; | |
9c80ecd6 | 407 | thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf); |
b20a6524 MM |
408 | } |
409 | ||
9accd112 MM |
410 | /* Handle btrace disabling. */ |
411 | ||
9ee23a85 | 412 | static void |
9accd112 MM |
413 | handle_btrace_disable (struct thread_info *thread) |
414 | { | |
415 | ||
416 | if (thread->btrace == NULL) | |
9ee23a85 | 417 | error (_("Branch tracing not enabled.")); |
9accd112 MM |
418 | |
419 | if (target_disable_btrace (thread->btrace) != 0) | |
9ee23a85 | 420 | error (_("Could not disable branch tracing.")); |
9accd112 MM |
421 | |
422 | thread->btrace = NULL; | |
9accd112 MM |
423 | } |
424 | ||
425 | /* Handle the "Qbtrace" packet. */ | |
426 | ||
427 | static int | |
428 | handle_btrace_general_set (char *own_buf) | |
429 | { | |
c12a5089 | 430 | client_state &cs = get_client_state (); |
9accd112 | 431 | struct thread_info *thread; |
9accd112 MM |
432 | char *op; |
433 | ||
61012eef | 434 | if (!startswith (own_buf, "Qbtrace:")) |
9accd112 MM |
435 | return 0; |
436 | ||
437 | op = own_buf + strlen ("Qbtrace:"); | |
438 | ||
d7e15655 TT |
439 | if (cs.general_thread == null_ptid |
440 | || cs.general_thread == minus_one_ptid) | |
9accd112 MM |
441 | { |
442 | strcpy (own_buf, "E.Must select a single thread."); | |
443 | return -1; | |
444 | } | |
445 | ||
c12a5089 | 446 | thread = find_thread_ptid (cs.general_thread); |
9accd112 MM |
447 | if (thread == NULL) |
448 | { | |
449 | strcpy (own_buf, "E.No such thread."); | |
450 | return -1; | |
451 | } | |
452 | ||
a70b8144 | 453 | try |
9ee23a85 MM |
454 | { |
455 | if (strcmp (op, "bts") == 0) | |
456 | handle_btrace_enable_bts (thread); | |
457 | else if (strcmp (op, "pt") == 0) | |
458 | handle_btrace_enable_pt (thread); | |
459 | else if (strcmp (op, "off") == 0) | |
460 | handle_btrace_disable (thread); | |
461 | else | |
462 | error (_("Bad Qbtrace operation. Use bts, pt, or off.")); | |
463 | ||
464 | write_ok (own_buf); | |
465 | } | |
230d2906 | 466 | catch (const gdb_exception_error &exception) |
9ee23a85 | 467 | { |
3d6e9d23 | 468 | sprintf (own_buf, "E.%s", exception.what ()); |
9ee23a85 | 469 | } |
9accd112 MM |
470 | |
471 | return 1; | |
472 | } | |
473 | ||
d33501a5 MM |
474 | /* Handle the "Qbtrace-conf" packet. */ |
475 | ||
476 | static int | |
477 | handle_btrace_conf_general_set (char *own_buf) | |
478 | { | |
c12a5089 | 479 | client_state &cs = get_client_state (); |
d33501a5 MM |
480 | struct thread_info *thread; |
481 | char *op; | |
482 | ||
61012eef | 483 | if (!startswith (own_buf, "Qbtrace-conf:")) |
d33501a5 MM |
484 | return 0; |
485 | ||
486 | op = own_buf + strlen ("Qbtrace-conf:"); | |
487 | ||
d7e15655 TT |
488 | if (cs.general_thread == null_ptid |
489 | || cs.general_thread == minus_one_ptid) | |
d33501a5 MM |
490 | { |
491 | strcpy (own_buf, "E.Must select a single thread."); | |
492 | return -1; | |
493 | } | |
494 | ||
c12a5089 | 495 | thread = find_thread_ptid (cs.general_thread); |
d33501a5 MM |
496 | if (thread == NULL) |
497 | { | |
498 | strcpy (own_buf, "E.No such thread."); | |
499 | return -1; | |
500 | } | |
501 | ||
61012eef | 502 | if (startswith (op, "bts:size=")) |
d33501a5 MM |
503 | { |
504 | unsigned long size; | |
505 | char *endp = NULL; | |
506 | ||
507 | errno = 0; | |
508 | size = strtoul (op + strlen ("bts:size="), &endp, 16); | |
509 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
510 | { | |
511 | strcpy (own_buf, "E.Bad size value."); | |
512 | return -1; | |
513 | } | |
514 | ||
515 | current_btrace_conf.bts.size = (unsigned int) size; | |
516 | } | |
b20a6524 MM |
517 | else if (strncmp (op, "pt:size=", strlen ("pt:size=")) == 0) |
518 | { | |
519 | unsigned long size; | |
520 | char *endp = NULL; | |
521 | ||
522 | errno = 0; | |
523 | size = strtoul (op + strlen ("pt:size="), &endp, 16); | |
524 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
525 | { | |
526 | strcpy (own_buf, "E.Bad size value."); | |
527 | return -1; | |
528 | } | |
529 | ||
530 | current_btrace_conf.pt.size = (unsigned int) size; | |
531 | } | |
d33501a5 MM |
532 | else |
533 | { | |
534 | strcpy (own_buf, "E.Bad Qbtrace configuration option."); | |
535 | return -1; | |
536 | } | |
537 | ||
538 | write_ok (own_buf); | |
539 | return 1; | |
540 | } | |
541 | ||
89be2091 | 542 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
543 | |
544 | static void | |
89be2091 DJ |
545 | handle_general_set (char *own_buf) |
546 | { | |
c12a5089 | 547 | client_state &cs = get_client_state (); |
61012eef | 548 | if (startswith (own_buf, "QPassSignals:")) |
89be2091 | 549 | { |
a493e3e2 | 550 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
551 | const char *p = own_buf + strlen ("QPassSignals:"); |
552 | CORE_ADDR cursig; | |
553 | ||
554 | p = decode_address_to_semicolon (&cursig, p); | |
555 | for (i = 0; i < numsigs; i++) | |
556 | { | |
557 | if (i == cursig) | |
558 | { | |
c12a5089 | 559 | cs.pass_signals[i] = 1; |
89be2091 DJ |
560 | if (*p == '\0') |
561 | /* Keep looping, to clear the remaining signals. */ | |
562 | cursig = -1; | |
563 | else | |
564 | p = decode_address_to_semicolon (&cursig, p); | |
565 | } | |
566 | else | |
c12a5089 | 567 | cs.pass_signals[i] = 0; |
89be2091 DJ |
568 | } |
569 | strcpy (own_buf, "OK"); | |
570 | return; | |
571 | } | |
572 | ||
61012eef | 573 | if (startswith (own_buf, "QProgramSignals:")) |
9b224c5e | 574 | { |
a493e3e2 | 575 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
576 | const char *p = own_buf + strlen ("QProgramSignals:"); |
577 | CORE_ADDR cursig; | |
578 | ||
c12a5089 | 579 | cs.program_signals_p = 1; |
9b224c5e PA |
580 | |
581 | p = decode_address_to_semicolon (&cursig, p); | |
582 | for (i = 0; i < numsigs; i++) | |
583 | { | |
584 | if (i == cursig) | |
585 | { | |
c12a5089 | 586 | cs.program_signals[i] = 1; |
9b224c5e PA |
587 | if (*p == '\0') |
588 | /* Keep looping, to clear the remaining signals. */ | |
589 | cursig = -1; | |
590 | else | |
591 | p = decode_address_to_semicolon (&cursig, p); | |
592 | } | |
593 | else | |
c12a5089 | 594 | cs.program_signals[i] = 0; |
9b224c5e PA |
595 | } |
596 | strcpy (own_buf, "OK"); | |
597 | return; | |
598 | } | |
599 | ||
82075af2 JS |
600 | if (startswith (own_buf, "QCatchSyscalls:")) |
601 | { | |
602 | const char *p = own_buf + sizeof ("QCatchSyscalls:") - 1; | |
603 | int enabled = -1; | |
604 | CORE_ADDR sysno; | |
605 | struct process_info *process; | |
606 | ||
607 | if (!target_running () || !target_supports_catch_syscall ()) | |
608 | { | |
609 | write_enn (own_buf); | |
610 | return; | |
611 | } | |
612 | ||
613 | if (strcmp (p, "0") == 0) | |
614 | enabled = 0; | |
615 | else if (p[0] == '1' && (p[1] == ';' || p[1] == '\0')) | |
616 | enabled = 1; | |
617 | else | |
618 | { | |
619 | fprintf (stderr, "Unknown catch-syscalls mode requested: %s\n", | |
620 | own_buf); | |
621 | write_enn (own_buf); | |
622 | return; | |
623 | } | |
624 | ||
625 | process = current_process (); | |
f27866ba | 626 | process->syscalls_to_catch.clear (); |
82075af2 JS |
627 | |
628 | if (enabled) | |
629 | { | |
630 | p += 1; | |
631 | if (*p == ';') | |
632 | { | |
633 | p += 1; | |
634 | while (*p != '\0') | |
635 | { | |
636 | p = decode_address_to_semicolon (&sysno, p); | |
f27866ba | 637 | process->syscalls_to_catch.push_back (sysno); |
82075af2 JS |
638 | } |
639 | } | |
640 | else | |
f27866ba | 641 | process->syscalls_to_catch.push_back (ANY_SYSCALL); |
82075af2 JS |
642 | } |
643 | ||
644 | write_ok (own_buf); | |
645 | return; | |
646 | } | |
647 | ||
0a2dde4a SDJ |
648 | if (strcmp (own_buf, "QEnvironmentReset") == 0) |
649 | { | |
650 | our_environ = gdb_environ::from_host_environ (); | |
651 | ||
652 | write_ok (own_buf); | |
653 | return; | |
654 | } | |
655 | ||
656 | if (startswith (own_buf, "QEnvironmentHexEncoded:")) | |
657 | { | |
658 | const char *p = own_buf + sizeof ("QEnvironmentHexEncoded:") - 1; | |
659 | /* The final form of the environment variable. FINAL_VAR will | |
660 | hold the 'VAR=VALUE' format. */ | |
661 | std::string final_var = hex2str (p); | |
662 | std::string var_name, var_value; | |
663 | ||
664 | if (remote_debug) | |
665 | { | |
666 | debug_printf (_("[QEnvironmentHexEncoded received '%s']\n"), p); | |
667 | debug_printf (_("[Environment variable to be set: '%s']\n"), | |
668 | final_var.c_str ()); | |
669 | debug_flush (); | |
670 | } | |
671 | ||
672 | size_t pos = final_var.find ('='); | |
673 | if (pos == std::string::npos) | |
674 | { | |
675 | warning (_("Unexpected format for environment variable: '%s'"), | |
676 | final_var.c_str ()); | |
677 | write_enn (own_buf); | |
678 | return; | |
679 | } | |
680 | ||
681 | var_name = final_var.substr (0, pos); | |
682 | var_value = final_var.substr (pos + 1, std::string::npos); | |
683 | ||
684 | our_environ.set (var_name.c_str (), var_value.c_str ()); | |
685 | ||
686 | write_ok (own_buf); | |
687 | return; | |
688 | } | |
689 | ||
690 | if (startswith (own_buf, "QEnvironmentUnset:")) | |
691 | { | |
692 | const char *p = own_buf + sizeof ("QEnvironmentUnset:") - 1; | |
693 | std::string varname = hex2str (p); | |
694 | ||
695 | if (remote_debug) | |
696 | { | |
697 | debug_printf (_("[QEnvironmentUnset received '%s']\n"), p); | |
698 | debug_printf (_("[Environment variable to be unset: '%s']\n"), | |
699 | varname.c_str ()); | |
700 | debug_flush (); | |
701 | } | |
702 | ||
703 | our_environ.unset (varname.c_str ()); | |
704 | ||
705 | write_ok (own_buf); | |
706 | return; | |
707 | } | |
708 | ||
a6f3e723 SL |
709 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
710 | { | |
711 | if (remote_debug) | |
712 | { | |
4eefa7bc PA |
713 | debug_printf ("[noack mode enabled]\n"); |
714 | debug_flush (); | |
a6f3e723 SL |
715 | } |
716 | ||
c12a5089 | 717 | cs.noack_mode = 1; |
a6f3e723 SL |
718 | write_ok (own_buf); |
719 | return; | |
720 | } | |
721 | ||
61012eef | 722 | if (startswith (own_buf, "QNonStop:")) |
bd99dc85 PA |
723 | { |
724 | char *mode = own_buf + 9; | |
725 | int req = -1; | |
b2333d22 | 726 | const char *req_str; |
bd99dc85 PA |
727 | |
728 | if (strcmp (mode, "0") == 0) | |
729 | req = 0; | |
730 | else if (strcmp (mode, "1") == 0) | |
731 | req = 1; | |
732 | else | |
733 | { | |
734 | /* We don't know what this mode is, so complain to | |
735 | GDB. */ | |
736 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
737 | own_buf); | |
738 | write_enn (own_buf); | |
739 | return; | |
740 | } | |
741 | ||
742 | req_str = req ? "non-stop" : "all-stop"; | |
743 | if (start_non_stop (req) != 0) | |
744 | { | |
745 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
746 | write_enn (own_buf); | |
747 | return; | |
748 | } | |
749 | ||
3e6ec53a | 750 | non_stop = (req != 0); |
bd99dc85 PA |
751 | |
752 | if (remote_debug) | |
4eefa7bc | 753 | debug_printf ("[%s mode enabled]\n", req_str); |
bd99dc85 PA |
754 | |
755 | write_ok (own_buf); | |
756 | return; | |
757 | } | |
758 | ||
61012eef | 759 | if (startswith (own_buf, "QDisableRandomization:")) |
03583c20 UW |
760 | { |
761 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
762 | ULONGEST setting; | |
763 | ||
764 | unpack_varlen_hex (packet, &setting); | |
c12a5089 | 765 | cs.disable_randomization = setting; |
03583c20 UW |
766 | |
767 | if (remote_debug) | |
768 | { | |
c12a5089 | 769 | debug_printf (cs.disable_randomization |
4eefa7bc PA |
770 | ? "[address space randomization disabled]\n" |
771 | : "[address space randomization enabled]\n"); | |
03583c20 UW |
772 | } |
773 | ||
774 | write_ok (own_buf); | |
775 | return; | |
776 | } | |
777 | ||
219f2f23 PA |
778 | if (target_supports_tracepoints () |
779 | && handle_tracepoint_general_set (own_buf)) | |
780 | return; | |
781 | ||
61012eef | 782 | if (startswith (own_buf, "QAgent:")) |
d1feda86 YQ |
783 | { |
784 | char *mode = own_buf + strlen ("QAgent:"); | |
785 | int req = 0; | |
786 | ||
787 | if (strcmp (mode, "0") == 0) | |
788 | req = 0; | |
789 | else if (strcmp (mode, "1") == 0) | |
790 | req = 1; | |
791 | else | |
792 | { | |
793 | /* We don't know what this value is, so complain to GDB. */ | |
794 | sprintf (own_buf, "E.Unknown QAgent value"); | |
795 | return; | |
796 | } | |
797 | ||
798 | /* Update the flag. */ | |
799 | use_agent = req; | |
800 | if (remote_debug) | |
4eefa7bc | 801 | debug_printf ("[%s agent]\n", req ? "Enable" : "Disable"); |
d1feda86 YQ |
802 | write_ok (own_buf); |
803 | return; | |
804 | } | |
805 | ||
9accd112 MM |
806 | if (handle_btrace_general_set (own_buf)) |
807 | return; | |
808 | ||
d33501a5 MM |
809 | if (handle_btrace_conf_general_set (own_buf)) |
810 | return; | |
811 | ||
65706a29 PA |
812 | if (startswith (own_buf, "QThreadEvents:")) |
813 | { | |
814 | char *mode = own_buf + strlen ("QThreadEvents:"); | |
815 | enum tribool req = TRIBOOL_UNKNOWN; | |
816 | ||
817 | if (strcmp (mode, "0") == 0) | |
818 | req = TRIBOOL_FALSE; | |
819 | else if (strcmp (mode, "1") == 0) | |
820 | req = TRIBOOL_TRUE; | |
821 | else | |
822 | { | |
65706a29 PA |
823 | /* We don't know what this mode is, so complain to GDB. */ |
824 | sprintf (own_buf, "E.Unknown thread-events mode requested: %s\n", | |
b9671caf | 825 | mode); |
65706a29 PA |
826 | return; |
827 | } | |
828 | ||
c12a5089 | 829 | cs.report_thread_events = (req == TRIBOOL_TRUE); |
65706a29 PA |
830 | |
831 | if (remote_debug) | |
832 | { | |
c12a5089 | 833 | const char *req_str = cs.report_thread_events ? "enabled" : "disabled"; |
65706a29 | 834 | |
4eefa7bc | 835 | debug_printf ("[thread events are now %s]\n", req_str); |
65706a29 PA |
836 | } |
837 | ||
838 | write_ok (own_buf); | |
839 | return; | |
840 | } | |
841 | ||
aefd8b33 SDJ |
842 | if (startswith (own_buf, "QStartupWithShell:")) |
843 | { | |
844 | const char *value = own_buf + strlen ("QStartupWithShell:"); | |
845 | ||
846 | if (strcmp (value, "1") == 0) | |
847 | startup_with_shell = true; | |
848 | else if (strcmp (value, "0") == 0) | |
849 | startup_with_shell = false; | |
850 | else | |
851 | { | |
852 | /* Unknown value. */ | |
853 | fprintf (stderr, "Unknown value to startup-with-shell: %s\n", | |
854 | own_buf); | |
855 | write_enn (own_buf); | |
856 | return; | |
857 | } | |
858 | ||
859 | if (remote_debug) | |
860 | debug_printf (_("[Inferior will %s started with shell]"), | |
861 | startup_with_shell ? "be" : "not be"); | |
862 | ||
863 | write_ok (own_buf); | |
864 | return; | |
865 | } | |
866 | ||
bc3b087d SDJ |
867 | if (startswith (own_buf, "QSetWorkingDir:")) |
868 | { | |
869 | const char *p = own_buf + strlen ("QSetWorkingDir:"); | |
870 | ||
871 | if (*p != '\0') | |
872 | { | |
873 | std::string path = hex2str (p); | |
874 | ||
875 | set_inferior_cwd (path.c_str ()); | |
876 | ||
877 | if (remote_debug) | |
878 | debug_printf (_("[Set the inferior's current directory to %s]\n"), | |
879 | path.c_str ()); | |
880 | } | |
881 | else | |
882 | { | |
883 | /* An empty argument means that we should clear out any | |
884 | previously set cwd for the inferior. */ | |
885 | set_inferior_cwd (NULL); | |
886 | ||
887 | if (remote_debug) | |
888 | debug_printf (_("\ | |
889 | [Unset the inferior's current directory; will use gdbserver's cwd]\n")); | |
890 | } | |
891 | write_ok (own_buf); | |
892 | ||
893 | return; | |
894 | } | |
895 | ||
89be2091 DJ |
896 | /* Otherwise we didn't know what packet it was. Say we didn't |
897 | understand it. */ | |
898 | own_buf[0] = 0; | |
899 | } | |
900 | ||
23181151 | 901 | static const char * |
fb1e4ffc | 902 | get_features_xml (const char *annex) |
23181151 | 903 | { |
3aee8918 PA |
904 | const struct target_desc *desc = current_target_desc (); |
905 | ||
906 | /* `desc->xmltarget' defines what to return when looking for the | |
907 | "target.xml" file. Its contents can either be verbatim XML code | |
908 | (prefixed with a '@') or else the name of the actual XML file to | |
909 | be used in place of "target.xml". | |
fb1e4ffc | 910 | |
9b4b61c8 UW |
911 | This variable is set up from the auto-generated |
912 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 913 | |
0abe8a89 | 914 | if (strcmp (annex, "target.xml") == 0) |
23181151 | 915 | { |
e98577a9 | 916 | const char *ret = tdesc_get_features_xml (desc); |
0abe8a89 YQ |
917 | |
918 | if (*ret == '@') | |
919 | return ret + 1; | |
23181151 | 920 | else |
0abe8a89 | 921 | annex = ret; |
23181151 DJ |
922 | } |
923 | ||
9b4b61c8 UW |
924 | #ifdef USE_XML |
925 | { | |
9b4b61c8 UW |
926 | int i; |
927 | ||
928 | /* Look for the annex. */ | |
929 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
930 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
931 | break; | |
932 | ||
933 | if (xml_builtin[i][0] != NULL) | |
934 | return xml_builtin[i][1]; | |
935 | } | |
936 | #endif | |
937 | ||
938 | return NULL; | |
23181151 DJ |
939 | } |
940 | ||
5b3da067 | 941 | static void |
c74d0ad8 DJ |
942 | monitor_show_help (void) |
943 | { | |
944 | monitor_output ("The following monitor commands are supported:\n"); | |
945 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 946 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
947 | monitor_output (" set debug-hw-points <0|1>\n"); |
948 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
949 | monitor_output (" set remote-debug <0|1>\n"); |
950 | monitor_output (" Enable remote protocol debugging messages\n"); | |
87ce2a04 DE |
951 | monitor_output (" set debug-format option1[,option2,...]\n"); |
952 | monitor_output (" Add additional information to debugging messages\n"); | |
953 | monitor_output (" Options: all, none"); | |
87ce2a04 | 954 | monitor_output (", timestamp"); |
87ce2a04 | 955 | monitor_output ("\n"); |
ecd7ecbc DJ |
956 | monitor_output (" exit\n"); |
957 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
958 | } |
959 | ||
764880b7 PA |
960 | /* Read trace frame or inferior memory. Returns the number of bytes |
961 | actually read, zero when no further transfer is possible, and -1 on | |
962 | error. Return of a positive value smaller than LEN does not | |
963 | indicate there's no more to be read, only the end of the transfer. | |
964 | E.g., when GDB reads memory from a traceframe, a first request may | |
965 | be served from a memory block that does not cover the whole request | |
966 | length. A following request gets the rest served from either | |
967 | another block (of the same traceframe) or from the read-only | |
968 | regions. */ | |
219f2f23 PA |
969 | |
970 | static int | |
90d74c30 | 971 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 972 | { |
c12a5089 | 973 | client_state &cs = get_client_state (); |
764880b7 | 974 | int res; |
90d74c30 | 975 | |
c12a5089 | 976 | if (cs.current_traceframe >= 0) |
219f2f23 PA |
977 | { |
978 | ULONGEST nbytes; | |
979 | ULONGEST length = len; | |
980 | ||
c12a5089 | 981 | if (traceframe_read_mem (cs.current_traceframe, |
219f2f23 | 982 | memaddr, myaddr, len, &nbytes)) |
9a13b2fa | 983 | return -1; |
219f2f23 | 984 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
985 | if (nbytes > 0) |
986 | return nbytes; | |
219f2f23 | 987 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 988 | return -1; |
219f2f23 PA |
989 | /* Otherwise we have a valid readonly case, fall through. */ |
990 | /* (assume no half-trace half-real blocks for now) */ | |
991 | } | |
992 | ||
764880b7 PA |
993 | res = prepare_to_access_memory (); |
994 | if (res == 0) | |
90d74c30 | 995 | { |
f557a88a | 996 | if (set_desired_thread ()) |
f0db101d PA |
997 | res = read_inferior_memory (memaddr, myaddr, len); |
998 | else | |
999 | res = 1; | |
0146f85b | 1000 | done_accessing_memory (); |
90d74c30 | 1001 | |
764880b7 PA |
1002 | return res == 0 ? len : -1; |
1003 | } | |
1004 | else | |
1005 | return -1; | |
219f2f23 PA |
1006 | } |
1007 | ||
1008 | /* Write trace frame or inferior memory. Actually, writing to trace | |
1009 | frames is forbidden. */ | |
1010 | ||
1011 | static int | |
90d74c30 | 1012 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 | 1013 | { |
c12a5089 SC |
1014 | client_state &cs = get_client_state (); |
1015 | if (cs.current_traceframe >= 0) | |
219f2f23 PA |
1016 | return EIO; |
1017 | else | |
90d74c30 PA |
1018 | { |
1019 | int ret; | |
1020 | ||
1021 | ret = prepare_to_access_memory (); | |
1022 | if (ret == 0) | |
1023 | { | |
f557a88a | 1024 | if (set_desired_thread ()) |
4196ab2a | 1025 | ret = target_write_memory (memaddr, myaddr, len); |
f0db101d PA |
1026 | else |
1027 | ret = EIO; | |
0146f85b | 1028 | done_accessing_memory (); |
90d74c30 PA |
1029 | } |
1030 | return ret; | |
1031 | } | |
219f2f23 PA |
1032 | } |
1033 | ||
08388c79 DE |
1034 | /* Subroutine of handle_search_memory to simplify it. */ |
1035 | ||
1036 | static int | |
1037 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
1038 | gdb_byte *pattern, unsigned pattern_len, | |
1039 | gdb_byte *search_buf, | |
1040 | unsigned chunk_size, unsigned search_buf_size, | |
1041 | CORE_ADDR *found_addrp) | |
1042 | { | |
1043 | /* Prime the search buffer. */ | |
1044 | ||
764880b7 PA |
1045 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
1046 | != search_buf_size) | |
08388c79 | 1047 | { |
b3dc46ff AB |
1048 | warning ("Unable to access %ld bytes of target " |
1049 | "memory at 0x%lx, halting search.", | |
1050 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
1051 | return -1; |
1052 | } | |
1053 | ||
1054 | /* Perform the search. | |
1055 | ||
1056 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
1057 | When we've scanned N bytes we copy the trailing bytes to the start and | |
1058 | read in another N bytes. */ | |
1059 | ||
1060 | while (search_space_len >= pattern_len) | |
1061 | { | |
1062 | gdb_byte *found_ptr; | |
1063 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
1064 | ? search_space_len | |
1065 | : search_buf_size); | |
1066 | ||
d6f85c84 SM |
1067 | found_ptr = (gdb_byte *) memmem (search_buf, nr_search_bytes, pattern, |
1068 | pattern_len); | |
08388c79 DE |
1069 | |
1070 | if (found_ptr != NULL) | |
1071 | { | |
1072 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
1073 | *found_addrp = found_addr; | |
1074 | return 1; | |
1075 | } | |
1076 | ||
1077 | /* Not found in this chunk, skip to next chunk. */ | |
1078 | ||
1079 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
1080 | if (search_space_len >= chunk_size) | |
1081 | search_space_len -= chunk_size; | |
1082 | else | |
1083 | search_space_len = 0; | |
1084 | ||
1085 | if (search_space_len >= pattern_len) | |
1086 | { | |
1087 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 1088 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
1089 | int nr_to_read; |
1090 | ||
1091 | /* Copy the trailing part of the previous iteration to the front | |
1092 | of the buffer for the next iteration. */ | |
1093 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
1094 | ||
1095 | nr_to_read = (search_space_len - keep_len < chunk_size | |
1096 | ? search_space_len - keep_len | |
1097 | : chunk_size); | |
1098 | ||
90d74c30 | 1099 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 1100 | nr_to_read) != search_buf_size) |
08388c79 | 1101 | { |
b3dc46ff | 1102 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 1103 | "at 0x%lx, halting search.", |
b3dc46ff | 1104 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
1105 | return -1; |
1106 | } | |
1107 | ||
1108 | start_addr += chunk_size; | |
1109 | } | |
1110 | } | |
1111 | ||
1112 | /* Not found. */ | |
1113 | ||
1114 | return 0; | |
1115 | } | |
1116 | ||
1117 | /* Handle qSearch:memory packets. */ | |
1118 | ||
1119 | static void | |
1120 | handle_search_memory (char *own_buf, int packet_len) | |
1121 | { | |
1122 | CORE_ADDR start_addr; | |
1123 | CORE_ADDR search_space_len; | |
1124 | gdb_byte *pattern; | |
1125 | unsigned int pattern_len; | |
1126 | /* NOTE: also defined in find.c testcase. */ | |
1127 | #define SEARCH_CHUNK_SIZE 16000 | |
1128 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
1129 | /* Buffer to hold memory contents for searching. */ | |
1130 | gdb_byte *search_buf; | |
1131 | unsigned search_buf_size; | |
1132 | int found; | |
1133 | CORE_ADDR found_addr; | |
1134 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
1135 | ||
224c3ddb | 1136 | pattern = (gdb_byte *) malloc (packet_len); |
08388c79 DE |
1137 | if (pattern == NULL) |
1138 | { | |
5e1471f5 | 1139 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1140 | strcpy (own_buf, "E00"); |
1141 | return; | |
1142 | } | |
1143 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
1144 | packet_len - cmd_name_len, | |
1145 | &start_addr, &search_space_len, | |
1146 | pattern, &pattern_len) < 0) | |
1147 | { | |
1148 | free (pattern); | |
5e1471f5 | 1149 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
1150 | strcpy (own_buf, "E00"); |
1151 | return; | |
1152 | } | |
1153 | ||
1154 | search_buf_size = chunk_size + pattern_len - 1; | |
1155 | ||
1156 | /* No point in trying to allocate a buffer larger than the search space. */ | |
1157 | if (search_space_len < search_buf_size) | |
1158 | search_buf_size = search_space_len; | |
1159 | ||
224c3ddb | 1160 | search_buf = (gdb_byte *) malloc (search_buf_size); |
08388c79 DE |
1161 | if (search_buf == NULL) |
1162 | { | |
1163 | free (pattern); | |
5e1471f5 | 1164 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1165 | strcpy (own_buf, "E00"); |
1166 | return; | |
1167 | } | |
1168 | ||
1169 | found = handle_search_memory_1 (start_addr, search_space_len, | |
1170 | pattern, pattern_len, | |
1171 | search_buf, chunk_size, search_buf_size, | |
1172 | &found_addr); | |
1173 | ||
1174 | if (found > 0) | |
1175 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
1176 | else if (found == 0) | |
1177 | strcpy (own_buf, "0"); | |
1178 | else | |
1179 | strcpy (own_buf, "E00"); | |
1180 | ||
1181 | free (search_buf); | |
1182 | free (pattern); | |
1183 | } | |
1184 | ||
e8ca139e SM |
1185 | /* Handle the "D" packet. */ |
1186 | ||
1187 | static void | |
1188 | handle_detach (char *own_buf) | |
1189 | { | |
c12a5089 | 1190 | client_state &cs = get_client_state (); |
e8ca139e | 1191 | |
31445d10 | 1192 | process_info *process; |
e8ca139e | 1193 | |
c12a5089 | 1194 | if (cs.multi_process) |
e8ca139e SM |
1195 | { |
1196 | /* skip 'D;' */ | |
31445d10 PA |
1197 | int pid = strtol (&own_buf[2], NULL, 16); |
1198 | ||
1199 | process = find_process_pid (pid); | |
e8ca139e SM |
1200 | } |
1201 | else | |
e8ca139e | 1202 | { |
31445d10 PA |
1203 | process = (current_thread != nullptr |
1204 | ? get_thread_process (current_thread) | |
1205 | : nullptr); | |
1206 | } | |
e8ca139e | 1207 | |
31445d10 PA |
1208 | if (process == NULL) |
1209 | { | |
1210 | write_enn (own_buf); | |
1211 | return; | |
1212 | } | |
e8ca139e | 1213 | |
31445d10 PA |
1214 | if ((tracing && disconnected_tracing) || any_persistent_commands (process)) |
1215 | { | |
e8ca139e SM |
1216 | if (tracing && disconnected_tracing) |
1217 | fprintf (stderr, | |
1218 | "Disconnected tracing in effect, " | |
1219 | "leaving gdbserver attached to the process\n"); | |
1220 | ||
31445d10 | 1221 | if (any_persistent_commands (process)) |
e8ca139e SM |
1222 | fprintf (stderr, |
1223 | "Persistent commands are present, " | |
1224 | "leaving gdbserver attached to the process\n"); | |
1225 | ||
1226 | /* Make sure we're in non-stop/async mode, so we we can both | |
1227 | wait for an async socket accept, and handle async target | |
1228 | events simultaneously. There's also no point either in | |
1229 | having the target stop all threads, when we're going to | |
1230 | pass signals down without informing GDB. */ | |
1231 | if (!non_stop) | |
1232 | { | |
1233 | if (debug_threads) | |
1234 | debug_printf ("Forcing non-stop mode\n"); | |
1235 | ||
3e6ec53a | 1236 | non_stop = true; |
e8ca139e SM |
1237 | start_non_stop (1); |
1238 | } | |
1239 | ||
1240 | process->gdb_detached = 1; | |
1241 | ||
1242 | /* Detaching implicitly resumes all threads. */ | |
1243 | target_continue_no_signal (minus_one_ptid); | |
1244 | ||
1245 | write_ok (own_buf); | |
1246 | return; | |
1247 | } | |
1248 | ||
31445d10 | 1249 | fprintf (stderr, "Detaching from process %d\n", process->pid); |
e8ca139e | 1250 | stop_tracing (); |
d105de22 TT |
1251 | |
1252 | /* We'll need this after PROCESS has been destroyed. */ | |
1253 | int pid = process->pid; | |
1254 | ||
ef2ddb33 | 1255 | if (detach_inferior (process) != 0) |
e8ca139e SM |
1256 | write_enn (own_buf); |
1257 | else | |
1258 | { | |
d105de22 | 1259 | discard_queued_stop_replies (ptid_t (pid)); |
e8ca139e SM |
1260 | write_ok (own_buf); |
1261 | ||
1262 | if (extended_protocol || target_running ()) | |
1263 | { | |
1264 | /* There is still at least one inferior remaining or | |
1265 | we are in extended mode, so don't terminate gdbserver, | |
1266 | and instead treat this like a normal program exit. */ | |
c12a5089 SC |
1267 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
1268 | cs.last_status.value.integer = 0; | |
d105de22 | 1269 | cs.last_ptid = ptid_t (pid); |
e8ca139e SM |
1270 | |
1271 | current_thread = NULL; | |
1272 | } | |
1273 | else | |
1274 | { | |
1275 | putpkt (own_buf); | |
1276 | remote_close (); | |
1277 | ||
1278 | /* If we are attached, then we can exit. Otherwise, we | |
1279 | need to hang around doing nothing, until the child is | |
1280 | gone. */ | |
d105de22 | 1281 | join_inferior (pid); |
e8ca139e SM |
1282 | exit (0); |
1283 | } | |
1284 | } | |
1285 | } | |
1286 | ||
87ce2a04 DE |
1287 | /* Parse options to --debug-format= and "monitor set debug-format". |
1288 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
1289 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
1290 | This triggers calls to monitor_output. | |
e80aaf61 SM |
1291 | The result is an empty string if all options were parsed ok, otherwise an |
1292 | error message which the caller must free. | |
87ce2a04 DE |
1293 | |
1294 | N.B. These commands affect all debug format settings, they are not | |
1295 | cumulative. If a format is not specified, it is turned off. | |
1296 | However, we don't go to extra trouble with things like | |
1297 | "monitor set debug-format all,none,timestamp". | |
1298 | Instead we just parse them one at a time, in order. | |
1299 | ||
1300 | The syntax for "monitor set debug" we support here is not identical | |
1301 | to gdb's "set debug foo on|off" because we also use this function to | |
1302 | parse "--debug-format=foo,bar". */ | |
1303 | ||
2cc05030 | 1304 | static std::string |
87ce2a04 DE |
1305 | parse_debug_format_options (const char *arg, int is_monitor) |
1306 | { | |
87ce2a04 DE |
1307 | /* First turn all debug format options off. */ |
1308 | debug_timestamp = 0; | |
1309 | ||
1310 | /* First remove leading spaces, for "monitor set debug-format". */ | |
1311 | while (isspace (*arg)) | |
1312 | ++arg; | |
1313 | ||
e80aaf61 SM |
1314 | std::vector<gdb::unique_xmalloc_ptr<char>> options |
1315 | = delim_string_to_char_ptr_vec (arg, ','); | |
87ce2a04 | 1316 | |
e80aaf61 | 1317 | for (const gdb::unique_xmalloc_ptr<char> &option : options) |
87ce2a04 | 1318 | { |
e80aaf61 | 1319 | if (strcmp (option.get (), "all") == 0) |
87ce2a04 DE |
1320 | { |
1321 | debug_timestamp = 1; | |
1322 | if (is_monitor) | |
1323 | monitor_output ("All extra debug format options enabled.\n"); | |
1324 | } | |
e80aaf61 | 1325 | else if (strcmp (option.get (), "none") == 0) |
87ce2a04 DE |
1326 | { |
1327 | debug_timestamp = 0; | |
1328 | if (is_monitor) | |
1329 | monitor_output ("All extra debug format options disabled.\n"); | |
1330 | } | |
e80aaf61 | 1331 | else if (strcmp (option.get (), "timestamp") == 0) |
87ce2a04 DE |
1332 | { |
1333 | debug_timestamp = 1; | |
1334 | if (is_monitor) | |
1335 | monitor_output ("Timestamps will be added to debug output.\n"); | |
1336 | } | |
87ce2a04 DE |
1337 | else if (*option == '\0') |
1338 | { | |
1339 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
1340 | continue; | |
1341 | } | |
1342 | else | |
e80aaf61 SM |
1343 | return string_printf ("Unknown debug-format argument: \"%s\"\n", |
1344 | option.get ()); | |
87ce2a04 DE |
1345 | } |
1346 | ||
2cc05030 | 1347 | return std::string (); |
87ce2a04 DE |
1348 | } |
1349 | ||
cdbfd419 PP |
1350 | /* Handle monitor commands not handled by target-specific handlers. */ |
1351 | ||
1352 | static void | |
d73f2619 | 1353 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
1354 | { |
1355 | if (strcmp (mon, "set debug 1") == 0) | |
1356 | { | |
1357 | debug_threads = 1; | |
1358 | monitor_output ("Debug output enabled.\n"); | |
1359 | } | |
1360 | else if (strcmp (mon, "set debug 0") == 0) | |
1361 | { | |
1362 | debug_threads = 0; | |
1363 | monitor_output ("Debug output disabled.\n"); | |
1364 | } | |
1365 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
1366 | { | |
c5e92cca | 1367 | show_debug_regs = 1; |
cdbfd419 PP |
1368 | monitor_output ("H/W point debugging output enabled.\n"); |
1369 | } | |
1370 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1371 | { | |
c5e92cca | 1372 | show_debug_regs = 0; |
cdbfd419 PP |
1373 | monitor_output ("H/W point debugging output disabled.\n"); |
1374 | } | |
1375 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1376 | { | |
1377 | remote_debug = 1; | |
1378 | monitor_output ("Protocol debug output enabled.\n"); | |
1379 | } | |
1380 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1381 | { | |
1382 | remote_debug = 0; | |
1383 | monitor_output ("Protocol debug output disabled.\n"); | |
1384 | } | |
61012eef | 1385 | else if (startswith (mon, "set debug-format ")) |
87ce2a04 | 1386 | { |
2cc05030 | 1387 | std::string error_msg |
87ce2a04 DE |
1388 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, |
1389 | 1); | |
1390 | ||
2cc05030 | 1391 | if (!error_msg.empty ()) |
87ce2a04 | 1392 | { |
2cc05030 | 1393 | monitor_output (error_msg.c_str ()); |
87ce2a04 DE |
1394 | monitor_show_help (); |
1395 | write_enn (own_buf); | |
87ce2a04 DE |
1396 | } |
1397 | } | |
aeb2e706 AH |
1398 | else if (strcmp (mon, "set debug-file") == 0) |
1399 | debug_set_output (nullptr); | |
1400 | else if (startswith (mon, "set debug-file ")) | |
1401 | debug_set_output (mon + sizeof ("set debug-file ") - 1); | |
cdbfd419 PP |
1402 | else if (strcmp (mon, "help") == 0) |
1403 | monitor_show_help (); | |
1404 | else if (strcmp (mon, "exit") == 0) | |
3e6ec53a | 1405 | exit_requested = true; |
cdbfd419 PP |
1406 | else |
1407 | { | |
1408 | monitor_output ("Unknown monitor command.\n\n"); | |
1409 | monitor_show_help (); | |
1410 | write_enn (own_buf); | |
1411 | } | |
1412 | } | |
1413 | ||
d08aafef PA |
1414 | /* Associates a callback with each supported qXfer'able object. */ |
1415 | ||
1416 | struct qxfer | |
1417 | { | |
1418 | /* The object this handler handles. */ | |
1419 | const char *object; | |
1420 | ||
1421 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1422 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1423 | the starting point. The ANNEX can be used to provide additional | |
1424 | data-specific information to the target. | |
1425 | ||
1426 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1427 | further transfer is possible, -1 on error, -2 when the transfer |
1428 | is not supported, and -3 on a verbose error message that should | |
1429 | be preserved. Return of a positive value smaller than LEN does | |
1430 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1431 | |
1432 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1433 | int (*xfer) (const char *annex, | |
1434 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1435 | ULONGEST offset, LONGEST len); | |
1436 | }; | |
1437 | ||
1438 | /* Handle qXfer:auxv:read. */ | |
1439 | ||
1440 | static int | |
1441 | handle_qxfer_auxv (const char *annex, | |
1442 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1443 | ULONGEST offset, LONGEST len) | |
1444 | { | |
1445 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1446 | return -2; | |
1447 | ||
f0db101d | 1448 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1449 | return -1; |
1450 | ||
1451 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1452 | } | |
1453 | ||
e57f1de3 GB |
1454 | /* Handle qXfer:exec-file:read. */ |
1455 | ||
1456 | static int | |
256642e8 | 1457 | handle_qxfer_exec_file (const char *annex, |
e57f1de3 GB |
1458 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1459 | ULONGEST offset, LONGEST len) | |
1460 | { | |
835205d0 | 1461 | char *file; |
e57f1de3 GB |
1462 | ULONGEST pid; |
1463 | int total_len; | |
1464 | ||
1465 | if (the_target->pid_to_exec_file == NULL || writebuf != NULL) | |
1466 | return -2; | |
1467 | ||
256642e8 | 1468 | if (annex[0] == '\0') |
835205d0 GB |
1469 | { |
1470 | if (current_thread == NULL) | |
1471 | return -1; | |
1472 | ||
1473 | pid = pid_of (current_thread); | |
1474 | } | |
1475 | else | |
1476 | { | |
835205d0 | 1477 | annex = unpack_varlen_hex (annex, &pid); |
835205d0 GB |
1478 | if (annex[0] != '\0') |
1479 | return -1; | |
1480 | } | |
1481 | ||
1482 | if (pid <= 0) | |
e57f1de3 GB |
1483 | return -1; |
1484 | ||
1485 | file = (*the_target->pid_to_exec_file) (pid); | |
1486 | if (file == NULL) | |
1487 | return -1; | |
1488 | ||
1489 | total_len = strlen (file); | |
1490 | ||
1491 | if (offset > total_len) | |
1492 | return -1; | |
1493 | ||
1494 | if (offset + len > total_len) | |
1495 | len = total_len - offset; | |
1496 | ||
1497 | memcpy (readbuf, file + offset, len); | |
1498 | return len; | |
1499 | } | |
1500 | ||
d08aafef PA |
1501 | /* Handle qXfer:features:read. */ |
1502 | ||
1503 | static int | |
1504 | handle_qxfer_features (const char *annex, | |
1505 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1506 | ULONGEST offset, LONGEST len) | |
1507 | { | |
1508 | const char *document; | |
1509 | size_t total_len; | |
1510 | ||
1511 | if (writebuf != NULL) | |
1512 | return -2; | |
1513 | ||
1514 | if (!target_running ()) | |
1515 | return -1; | |
1516 | ||
1517 | /* Grab the correct annex. */ | |
1518 | document = get_features_xml (annex); | |
1519 | if (document == NULL) | |
1520 | return -1; | |
1521 | ||
1522 | total_len = strlen (document); | |
1523 | ||
1524 | if (offset > total_len) | |
1525 | return -1; | |
1526 | ||
1527 | if (offset + len > total_len) | |
1528 | len = total_len - offset; | |
1529 | ||
1530 | memcpy (readbuf, document + offset, len); | |
1531 | return len; | |
1532 | } | |
1533 | ||
1534 | /* Handle qXfer:libraries:read. */ | |
1535 | ||
1536 | static int | |
1537 | handle_qxfer_libraries (const char *annex, | |
1538 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1539 | ULONGEST offset, LONGEST len) | |
1540 | { | |
d08aafef PA |
1541 | if (writebuf != NULL) |
1542 | return -2; | |
1543 | ||
f0db101d | 1544 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1545 | return -1; |
1546 | ||
04fd3ba9 | 1547 | std::string document = "<library-list version=\"1.0\">\n"; |
d08aafef | 1548 | |
c9cb8905 SM |
1549 | for (const dll_info &dll : all_dlls) |
1550 | document += string_printf | |
a2236a08 HD |
1551 | (" <library name=\"%s\"><segment address=\"0x%s\"/></library>\n", |
1552 | dll.name.c_str (), paddress (dll.base_addr)); | |
d08aafef | 1553 | |
04fd3ba9 | 1554 | document += "</library-list>\n"; |
d08aafef | 1555 | |
04fd3ba9 SM |
1556 | if (offset > document.length ()) |
1557 | return -1; | |
d08aafef | 1558 | |
04fd3ba9 SM |
1559 | if (offset + len > document.length ()) |
1560 | len = document.length () - offset; | |
d08aafef | 1561 | |
04fd3ba9 | 1562 | memcpy (readbuf, &document[offset], len); |
d08aafef | 1563 | |
d08aafef PA |
1564 | return len; |
1565 | } | |
1566 | ||
2268b414 JK |
1567 | /* Handle qXfer:libraries-svr4:read. */ |
1568 | ||
1569 | static int | |
1570 | handle_qxfer_libraries_svr4 (const char *annex, | |
1571 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1572 | ULONGEST offset, LONGEST len) | |
1573 | { | |
1574 | if (writebuf != NULL) | |
1575 | return -2; | |
1576 | ||
f0db101d | 1577 | if (current_thread == NULL || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1578 | return -1; |
1579 | ||
1580 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1581 | } | |
1582 | ||
d08aafef PA |
1583 | /* Handle qXfer:osadata:read. */ |
1584 | ||
1585 | static int | |
1586 | handle_qxfer_osdata (const char *annex, | |
1587 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1588 | ULONGEST offset, LONGEST len) | |
1589 | { | |
1590 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1591 | return -2; | |
1592 | ||
1593 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1594 | } | |
1595 | ||
1596 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1597 | ||
1598 | static int | |
1599 | handle_qxfer_siginfo (const char *annex, | |
1600 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1601 | ULONGEST offset, LONGEST len) | |
1602 | { | |
1603 | if (the_target->qxfer_siginfo == NULL) | |
1604 | return -2; | |
1605 | ||
f0db101d | 1606 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1607 | return -1; |
1608 | ||
1609 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1610 | } | |
1611 | ||
d08aafef PA |
1612 | /* Handle qXfer:statictrace:read. */ |
1613 | ||
1614 | static int | |
1615 | handle_qxfer_statictrace (const char *annex, | |
1616 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1617 | ULONGEST offset, LONGEST len) | |
1618 | { | |
c12a5089 | 1619 | client_state &cs = get_client_state (); |
d08aafef PA |
1620 | ULONGEST nbytes; |
1621 | ||
1622 | if (writebuf != NULL) | |
1623 | return -2; | |
1624 | ||
c12a5089 SC |
1625 | if (annex[0] != '\0' || current_thread == NULL |
1626 | || cs.current_traceframe == -1) | |
d08aafef PA |
1627 | return -1; |
1628 | ||
c12a5089 | 1629 | if (traceframe_read_sdata (cs.current_traceframe, offset, |
d08aafef PA |
1630 | readbuf, len, &nbytes)) |
1631 | return -1; | |
1632 | return nbytes; | |
1633 | } | |
1634 | ||
649ebbca DE |
1635 | /* Helper for handle_qxfer_threads_proper. |
1636 | Emit the XML to describe the thread of INF. */ | |
d08aafef | 1637 | |
dc146f7c | 1638 | static void |
c0e15c9b | 1639 | handle_qxfer_threads_worker (thread_info *thread, struct buffer *buffer) |
dc146f7c | 1640 | { |
124aceb4 | 1641 | ptid_t ptid = ptid_of (thread); |
649ebbca DE |
1642 | char ptid_s[100]; |
1643 | int core = target_core_of_thread (ptid); | |
1644 | char core_s[21]; | |
79efa585 | 1645 | const char *name = target_thread_name (ptid); |
f6327dcb KB |
1646 | int handle_len; |
1647 | gdb_byte *handle; | |
1648 | bool handle_status = target_thread_handle (ptid, &handle, &handle_len); | |
dc146f7c | 1649 | |
649ebbca | 1650 | write_ptid (ptid_s, ptid); |
dc146f7c | 1651 | |
79efa585 SM |
1652 | buffer_xml_printf (buffer, "<thread id=\"%s\"", ptid_s); |
1653 | ||
649ebbca | 1654 | if (core != -1) |
dc146f7c | 1655 | { |
649ebbca | 1656 | sprintf (core_s, "%d", core); |
79efa585 | 1657 | buffer_xml_printf (buffer, " core=\"%s\"", core_s); |
649ebbca | 1658 | } |
79efa585 SM |
1659 | |
1660 | if (name != NULL) | |
1661 | buffer_xml_printf (buffer, " name=\"%s\"", name); | |
1662 | ||
f6327dcb KB |
1663 | if (handle_status) |
1664 | { | |
1665 | char *handle_s = (char *) alloca (handle_len * 2 + 1); | |
1666 | bin2hex (handle, handle_s, handle_len); | |
1667 | buffer_xml_printf (buffer, " handle=\"%s\"", handle_s); | |
1668 | } | |
1669 | ||
79efa585 | 1670 | buffer_xml_printf (buffer, "/>\n"); |
649ebbca | 1671 | } |
dc146f7c | 1672 | |
649ebbca | 1673 | /* Helper for handle_qxfer_threads. */ |
dc146f7c | 1674 | |
649ebbca DE |
1675 | static void |
1676 | handle_qxfer_threads_proper (struct buffer *buffer) | |
1677 | { | |
1678 | buffer_grow_str (buffer, "<threads>\n"); | |
1679 | ||
c0e15c9b SM |
1680 | for_each_thread ([&] (thread_info *thread) |
1681 | { | |
1682 | handle_qxfer_threads_worker (thread, buffer); | |
1683 | }); | |
dc146f7c VP |
1684 | |
1685 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1686 | } | |
1687 | ||
d08aafef PA |
1688 | /* Handle qXfer:threads:read. */ |
1689 | ||
dc146f7c | 1690 | static int |
d08aafef PA |
1691 | handle_qxfer_threads (const char *annex, |
1692 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1693 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1694 | { |
1695 | static char *result = 0; | |
1696 | static unsigned int result_length = 0; | |
1697 | ||
d08aafef PA |
1698 | if (writebuf != NULL) |
1699 | return -2; | |
1700 | ||
f0db101d | 1701 | if (annex[0] != '\0') |
d08aafef | 1702 | return -1; |
dc146f7c VP |
1703 | |
1704 | if (offset == 0) | |
1705 | { | |
1706 | struct buffer buffer; | |
1707 | /* When asked for data at offset 0, generate everything and store into | |
1708 | 'result'. Successive reads will be served off 'result'. */ | |
1709 | if (result) | |
1710 | free (result); | |
1711 | ||
1712 | buffer_init (&buffer); | |
1713 | ||
d08aafef | 1714 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1715 | |
1716 | result = buffer_finish (&buffer); | |
1717 | result_length = strlen (result); | |
1718 | buffer_free (&buffer); | |
1719 | } | |
1720 | ||
1721 | if (offset >= result_length) | |
1722 | { | |
1723 | /* We're out of data. */ | |
1724 | free (result); | |
1725 | result = NULL; | |
1726 | result_length = 0; | |
1727 | return 0; | |
1728 | } | |
1729 | ||
d08aafef PA |
1730 | if (len > result_length - offset) |
1731 | len = result_length - offset; | |
1732 | ||
1733 | memcpy (readbuf, result + offset, len); | |
1734 | ||
1735 | return len; | |
1736 | } | |
1737 | ||
b3b9301e PA |
1738 | /* Handle qXfer:traceframe-info:read. */ |
1739 | ||
1740 | static int | |
1741 | handle_qxfer_traceframe_info (const char *annex, | |
1742 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1743 | ULONGEST offset, LONGEST len) | |
1744 | { | |
c12a5089 | 1745 | client_state &cs = get_client_state (); |
b3b9301e PA |
1746 | static char *result = 0; |
1747 | static unsigned int result_length = 0; | |
1748 | ||
1749 | if (writebuf != NULL) | |
1750 | return -2; | |
1751 | ||
c12a5089 | 1752 | if (!target_running () || annex[0] != '\0' || cs.current_traceframe == -1) |
b3b9301e PA |
1753 | return -1; |
1754 | ||
1755 | if (offset == 0) | |
1756 | { | |
1757 | struct buffer buffer; | |
1758 | ||
1759 | /* When asked for data at offset 0, generate everything and | |
1760 | store into 'result'. Successive reads will be served off | |
1761 | 'result'. */ | |
1762 | free (result); | |
1763 | ||
1764 | buffer_init (&buffer); | |
1765 | ||
c12a5089 | 1766 | traceframe_read_info (cs.current_traceframe, &buffer); |
b3b9301e PA |
1767 | |
1768 | result = buffer_finish (&buffer); | |
1769 | result_length = strlen (result); | |
1770 | buffer_free (&buffer); | |
1771 | } | |
1772 | ||
1773 | if (offset >= result_length) | |
1774 | { | |
1775 | /* We're out of data. */ | |
1776 | free (result); | |
1777 | result = NULL; | |
1778 | result_length = 0; | |
1779 | return 0; | |
1780 | } | |
1781 | ||
1782 | if (len > result_length - offset) | |
1783 | len = result_length - offset; | |
1784 | ||
1785 | memcpy (readbuf, result + offset, len); | |
1786 | return len; | |
1787 | } | |
1788 | ||
78d85199 YQ |
1789 | /* Handle qXfer:fdpic:read. */ |
1790 | ||
1791 | static int | |
1792 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1793 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1794 | { | |
1795 | if (the_target->read_loadmap == NULL) | |
1796 | return -2; | |
1797 | ||
f0db101d | 1798 | if (current_thread == NULL) |
78d85199 YQ |
1799 | return -1; |
1800 | ||
1801 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1802 | } | |
1803 | ||
9accd112 MM |
1804 | /* Handle qXfer:btrace:read. */ |
1805 | ||
1806 | static int | |
1807 | handle_qxfer_btrace (const char *annex, | |
1808 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1809 | ULONGEST offset, LONGEST len) | |
1810 | { | |
c12a5089 | 1811 | client_state &cs = get_client_state (); |
9accd112 MM |
1812 | static struct buffer cache; |
1813 | struct thread_info *thread; | |
add67df8 PA |
1814 | enum btrace_read_type type; |
1815 | int result; | |
9accd112 | 1816 | |
b1223e78 | 1817 | if (writebuf != NULL) |
9accd112 MM |
1818 | return -2; |
1819 | ||
d7e15655 TT |
1820 | if (cs.general_thread == null_ptid |
1821 | || cs.general_thread == minus_one_ptid) | |
9accd112 | 1822 | { |
c12a5089 | 1823 | strcpy (cs.own_buf, "E.Must select a single thread."); |
9accd112 MM |
1824 | return -3; |
1825 | } | |
1826 | ||
c12a5089 | 1827 | thread = find_thread_ptid (cs.general_thread); |
9accd112 MM |
1828 | if (thread == NULL) |
1829 | { | |
c12a5089 | 1830 | strcpy (cs.own_buf, "E.No such thread."); |
9accd112 MM |
1831 | return -3; |
1832 | } | |
1833 | ||
1834 | if (thread->btrace == NULL) | |
1835 | { | |
c12a5089 | 1836 | strcpy (cs.own_buf, "E.Btrace not enabled."); |
9accd112 MM |
1837 | return -3; |
1838 | } | |
1839 | ||
1840 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1841 | type = BTRACE_READ_ALL; |
9accd112 | 1842 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1843 | type = BTRACE_READ_NEW; |
969c39fb MM |
1844 | else if (strcmp (annex, "delta") == 0) |
1845 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1846 | else |
1847 | { | |
c12a5089 | 1848 | strcpy (cs.own_buf, "E.Bad annex."); |
9accd112 MM |
1849 | return -3; |
1850 | } | |
1851 | ||
1852 | if (offset == 0) | |
1853 | { | |
1854 | buffer_free (&cache); | |
1855 | ||
a70b8144 | 1856 | try |
b1223e78 MM |
1857 | { |
1858 | result = target_read_btrace (thread->btrace, &cache, type); | |
1859 | if (result != 0) | |
c12a5089 | 1860 | memcpy (cs.own_buf, cache.buffer, cache.used_size); |
b1223e78 | 1861 | } |
230d2906 | 1862 | catch (const gdb_exception_error &exception) |
969c39fb | 1863 | { |
3d6e9d23 | 1864 | sprintf (cs.own_buf, "E.%s", exception.what ()); |
b1223e78 | 1865 | result = -1; |
969c39fb | 1866 | } |
b1223e78 MM |
1867 | |
1868 | if (result != 0) | |
1869 | return -3; | |
9accd112 MM |
1870 | } |
1871 | else if (offset > cache.used_size) | |
1872 | { | |
1873 | buffer_free (&cache); | |
1874 | return -3; | |
1875 | } | |
1876 | ||
1877 | if (len > cache.used_size - offset) | |
1878 | len = cache.used_size - offset; | |
1879 | ||
1880 | memcpy (readbuf, cache.buffer + offset, len); | |
1881 | ||
1882 | return len; | |
1883 | } | |
1884 | ||
f4abbc16 MM |
1885 | /* Handle qXfer:btrace-conf:read. */ |
1886 | ||
1887 | static int | |
1888 | handle_qxfer_btrace_conf (const char *annex, | |
1889 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1890 | ULONGEST offset, LONGEST len) | |
1891 | { | |
c12a5089 | 1892 | client_state &cs = get_client_state (); |
f4abbc16 MM |
1893 | static struct buffer cache; |
1894 | struct thread_info *thread; | |
1895 | int result; | |
1896 | ||
b1223e78 | 1897 | if (writebuf != NULL) |
f4abbc16 MM |
1898 | return -2; |
1899 | ||
f0db101d | 1900 | if (annex[0] != '\0') |
f4abbc16 MM |
1901 | return -1; |
1902 | ||
d7e15655 TT |
1903 | if (cs.general_thread == null_ptid |
1904 | || cs.general_thread == minus_one_ptid) | |
f4abbc16 | 1905 | { |
c12a5089 | 1906 | strcpy (cs.own_buf, "E.Must select a single thread."); |
f4abbc16 MM |
1907 | return -3; |
1908 | } | |
1909 | ||
c12a5089 | 1910 | thread = find_thread_ptid (cs.general_thread); |
f4abbc16 MM |
1911 | if (thread == NULL) |
1912 | { | |
c12a5089 | 1913 | strcpy (cs.own_buf, "E.No such thread."); |
f4abbc16 MM |
1914 | return -3; |
1915 | } | |
1916 | ||
1917 | if (thread->btrace == NULL) | |
1918 | { | |
c12a5089 | 1919 | strcpy (cs.own_buf, "E.Btrace not enabled."); |
f4abbc16 MM |
1920 | return -3; |
1921 | } | |
1922 | ||
1923 | if (offset == 0) | |
1924 | { | |
1925 | buffer_free (&cache); | |
1926 | ||
a70b8144 | 1927 | try |
b1223e78 MM |
1928 | { |
1929 | result = target_read_btrace_conf (thread->btrace, &cache); | |
1930 | if (result != 0) | |
c12a5089 | 1931 | memcpy (cs.own_buf, cache.buffer, cache.used_size); |
b1223e78 | 1932 | } |
230d2906 | 1933 | catch (const gdb_exception_error &exception) |
f4abbc16 | 1934 | { |
3d6e9d23 | 1935 | sprintf (cs.own_buf, "E.%s", exception.what ()); |
b1223e78 | 1936 | result = -1; |
f4abbc16 | 1937 | } |
b1223e78 MM |
1938 | |
1939 | if (result != 0) | |
1940 | return -3; | |
f4abbc16 MM |
1941 | } |
1942 | else if (offset > cache.used_size) | |
1943 | { | |
1944 | buffer_free (&cache); | |
1945 | return -3; | |
1946 | } | |
1947 | ||
1948 | if (len > cache.used_size - offset) | |
1949 | len = cache.used_size - offset; | |
1950 | ||
1951 | memcpy (readbuf, cache.buffer + offset, len); | |
1952 | ||
1953 | return len; | |
1954 | } | |
1955 | ||
d08aafef PA |
1956 | static const struct qxfer qxfer_packets[] = |
1957 | { | |
1958 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1959 | { "btrace", handle_qxfer_btrace }, |
f4abbc16 | 1960 | { "btrace-conf", handle_qxfer_btrace_conf }, |
e57f1de3 | 1961 | { "exec-file", handle_qxfer_exec_file}, |
78d85199 | 1962 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1963 | { "features", handle_qxfer_features }, |
1964 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1965 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1966 | { "osdata", handle_qxfer_osdata }, |
1967 | { "siginfo", handle_qxfer_siginfo }, | |
d08aafef PA |
1968 | { "statictrace", handle_qxfer_statictrace }, |
1969 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1970 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1971 | }; |
1972 | ||
1973 | static int | |
1974 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1975 | { | |
1976 | int i; | |
1977 | char *object; | |
1978 | char *rw; | |
1979 | char *annex; | |
1980 | char *offset; | |
1981 | ||
61012eef | 1982 | if (!startswith (own_buf, "qXfer:")) |
d08aafef PA |
1983 | return 0; |
1984 | ||
1985 | /* Grab the object, r/w and annex. */ | |
1986 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
1987 | { | |
1988 | write_enn (own_buf); | |
1989 | return 1; | |
1990 | } | |
1991 | ||
1992 | for (i = 0; | |
1993 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
1994 | i++) | |
1995 | { | |
1996 | const struct qxfer *q = &qxfer_packets[i]; | |
1997 | ||
1998 | if (strcmp (object, q->object) == 0) | |
1999 | { | |
2000 | if (strcmp (rw, "read") == 0) | |
2001 | { | |
2002 | unsigned char *data; | |
2003 | int n; | |
2004 | CORE_ADDR ofs; | |
2005 | unsigned int len; | |
2006 | ||
2007 | /* Grab the offset and length. */ | |
2008 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
2009 | { | |
2010 | write_enn (own_buf); | |
2011 | return 1; | |
2012 | } | |
2013 | ||
2014 | /* Read one extra byte, as an indicator of whether there is | |
2015 | more. */ | |
2016 | if (len > PBUFSIZ - 2) | |
2017 | len = PBUFSIZ - 2; | |
224c3ddb | 2018 | data = (unsigned char *) malloc (len + 1); |
d08aafef PA |
2019 | if (data == NULL) |
2020 | { | |
2021 | write_enn (own_buf); | |
2022 | return 1; | |
2023 | } | |
2024 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
2025 | if (n == -2) | |
2026 | { | |
2027 | free (data); | |
2028 | return 0; | |
2029 | } | |
5cc22e4c MM |
2030 | else if (n == -3) |
2031 | { | |
2032 | /* Preserve error message. */ | |
2033 | } | |
d08aafef PA |
2034 | else if (n < 0) |
2035 | write_enn (own_buf); | |
2036 | else if (n > len) | |
2037 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
2038 | else | |
2039 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
2040 | ||
2041 | free (data); | |
2042 | return 1; | |
2043 | } | |
2044 | else if (strcmp (rw, "write") == 0) | |
2045 | { | |
2046 | int n; | |
2047 | unsigned int len; | |
2048 | CORE_ADDR ofs; | |
2049 | unsigned char *data; | |
2050 | ||
2051 | strcpy (own_buf, "E00"); | |
224c3ddb | 2052 | data = (unsigned char *) malloc (packet_len - (offset - own_buf)); |
d08aafef PA |
2053 | if (data == NULL) |
2054 | { | |
2055 | write_enn (own_buf); | |
2056 | return 1; | |
2057 | } | |
2058 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
2059 | &ofs, &len, data) < 0) | |
2060 | { | |
2061 | free (data); | |
2062 | write_enn (own_buf); | |
2063 | return 1; | |
2064 | } | |
2065 | ||
2066 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
2067 | if (n == -2) | |
2068 | { | |
2069 | free (data); | |
2070 | return 0; | |
2071 | } | |
5cc22e4c MM |
2072 | else if (n == -3) |
2073 | { | |
2074 | /* Preserve error message. */ | |
2075 | } | |
d08aafef PA |
2076 | else if (n < 0) |
2077 | write_enn (own_buf); | |
2078 | else | |
2079 | sprintf (own_buf, "%x", n); | |
dc146f7c | 2080 | |
d08aafef PA |
2081 | free (data); |
2082 | return 1; | |
2083 | } | |
dc146f7c | 2084 | |
d08aafef PA |
2085 | return 0; |
2086 | } | |
2087 | } | |
dc146f7c | 2088 | |
d08aafef | 2089 | return 0; |
dc146f7c VP |
2090 | } |
2091 | ||
30ba68cb MS |
2092 | /* Compute 32 bit CRC from inferior memory. |
2093 | ||
2094 | On success, return 32 bit CRC. | |
2095 | On failure, return (unsigned long long) -1. */ | |
2096 | ||
2097 | static unsigned long long | |
2098 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
2099 | { | |
30ba68cb MS |
2100 | while (len--) |
2101 | { | |
2102 | unsigned char byte = 0; | |
2103 | ||
2104 | /* Return failure if memory read fails. */ | |
2105 | if (read_inferior_memory (base, &byte, 1) != 0) | |
2106 | return (unsigned long long) -1; | |
2107 | ||
65da7f14 | 2108 | crc = xcrc32 (&byte, 1, crc); |
30ba68cb MS |
2109 | base++; |
2110 | } | |
2111 | return (unsigned long long) crc; | |
2112 | } | |
2113 | ||
043c3577 MM |
2114 | /* Add supported btrace packets to BUF. */ |
2115 | ||
2116 | static void | |
2117 | supported_btrace_packets (char *buf) | |
2118 | { | |
de6242d3 MM |
2119 | strcat (buf, ";Qbtrace:bts+"); |
2120 | strcat (buf, ";Qbtrace-conf:bts:size+"); | |
2121 | strcat (buf, ";Qbtrace:pt+"); | |
2122 | strcat (buf, ";Qbtrace-conf:pt:size+"); | |
043c3577 MM |
2123 | strcat (buf, ";Qbtrace:off+"); |
2124 | strcat (buf, ";qXfer:btrace:read+"); | |
f4abbc16 | 2125 | strcat (buf, ";qXfer:btrace-conf:read+"); |
043c3577 MM |
2126 | } |
2127 | ||
ce3a066d | 2128 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 2129 | |
5b3da067 | 2130 | static void |
0e7f50da | 2131 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 2132 | { |
c12a5089 | 2133 | client_state &cs = get_client_state (); |
9c80ecd6 | 2134 | static std::list<thread_info *>::const_iterator thread_iter; |
0d62e5e8 | 2135 | |
bb63802a | 2136 | /* Reply the current thread id. */ |
db42f210 | 2137 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 2138 | { |
124aceb4 | 2139 | ptid_t ptid; |
f8a4e119 | 2140 | require_running_or_return (own_buf); |
bd99dc85 | 2141 | |
c12a5089 SC |
2142 | if (cs.general_thread != null_ptid && cs.general_thread != minus_one_ptid) |
2143 | ptid = cs.general_thread; | |
bd99dc85 PA |
2144 | else |
2145 | { | |
9c80ecd6 SM |
2146 | thread_iter = all_threads.begin (); |
2147 | ptid = (*thread_iter)->id; | |
bd99dc85 PA |
2148 | } |
2149 | ||
95954743 PA |
2150 | sprintf (own_buf, "QC"); |
2151 | own_buf += 2; | |
124aceb4 | 2152 | write_ptid (own_buf, ptid); |
bb63802a UW |
2153 | return; |
2154 | } | |
2155 | ||
ce3a066d DJ |
2156 | if (strcmp ("qSymbol::", own_buf) == 0) |
2157 | { | |
34c65914 PA |
2158 | struct thread_info *save_thread = current_thread; |
2159 | ||
2160 | /* For qSymbol, GDB only changes the current thread if the | |
2161 | previous current thread was of a different process. So if | |
2162 | the previous thread is gone, we need to pick another one of | |
2163 | the same process. This can happen e.g., if we followed an | |
2164 | exec in a non-leader thread. */ | |
2165 | if (current_thread == NULL) | |
2166 | { | |
2167 | current_thread | |
e99b03dc | 2168 | = find_any_thread_of_pid (cs.general_thread.pid ()); |
34c65914 PA |
2169 | |
2170 | /* Just in case, if we didn't find a thread, then bail out | |
2171 | instead of crashing. */ | |
2172 | if (current_thread == NULL) | |
2173 | { | |
2174 | write_enn (own_buf); | |
2175 | current_thread = save_thread; | |
2176 | return; | |
2177 | } | |
2178 | } | |
2179 | ||
d3bbe7a0 PA |
2180 | /* GDB is suggesting new symbols have been loaded. This may |
2181 | mean a new shared library has been detected as loaded, so | |
2182 | take the opportunity to check if breakpoints we think are | |
2183 | inserted, still are. Note that it isn't guaranteed that | |
2184 | we'll see this when a shared library is loaded, and nor will | |
2185 | we see this for unloads (although breakpoints in unloaded | |
2186 | libraries shouldn't trigger), as GDB may not find symbols for | |
2187 | the library at all. We also re-validate breakpoints when we | |
2188 | see a second GDB breakpoint for the same address, and or when | |
2189 | we access breakpoint shadows. */ | |
2190 | validate_breakpoints (); | |
2191 | ||
fa593d66 PA |
2192 | if (target_supports_tracepoints ()) |
2193 | tracepoint_look_up_symbols (); | |
2194 | ||
f0db101d | 2195 | if (current_thread != NULL && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
2196 | (*the_target->look_up_symbols) (); |
2197 | ||
34c65914 PA |
2198 | current_thread = save_thread; |
2199 | ||
ce3a066d DJ |
2200 | strcpy (own_buf, "OK"); |
2201 | return; | |
2202 | } | |
2203 | ||
db42f210 | 2204 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 2205 | { |
db42f210 | 2206 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 2207 | { |
f8a4e119 | 2208 | require_running_or_return (own_buf); |
9c80ecd6 | 2209 | thread_iter = all_threads.begin (); |
95954743 PA |
2210 | |
2211 | *own_buf++ = 'm'; | |
9c80ecd6 SM |
2212 | ptid_t ptid = (*thread_iter)->id; |
2213 | write_ptid (own_buf, ptid); | |
2214 | thread_iter++; | |
0d62e5e8 DJ |
2215 | return; |
2216 | } | |
db42f210 PA |
2217 | |
2218 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 2219 | { |
f8a4e119 | 2220 | require_running_or_return (own_buf); |
9c80ecd6 | 2221 | if (thread_iter != all_threads.end ()) |
db42f210 | 2222 | { |
95954743 | 2223 | *own_buf++ = 'm'; |
9c80ecd6 SM |
2224 | ptid_t ptid = (*thread_iter)->id; |
2225 | write_ptid (own_buf, ptid); | |
2226 | thread_iter++; | |
db42f210 PA |
2227 | return; |
2228 | } | |
2229 | else | |
2230 | { | |
2231 | sprintf (own_buf, "l"); | |
2232 | return; | |
2233 | } | |
0d62e5e8 DJ |
2234 | } |
2235 | } | |
aa691b87 | 2236 | |
52fb6437 NS |
2237 | if (the_target->read_offsets != NULL |
2238 | && strcmp ("qOffsets", own_buf) == 0) | |
2239 | { | |
2240 | CORE_ADDR text, data; | |
2d717e4f | 2241 | |
f8a4e119 | 2242 | require_running_or_return (own_buf); |
52fb6437 NS |
2243 | if (the_target->read_offsets (&text, &data)) |
2244 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
2245 | (long)text, (long)data, (long)data); | |
2246 | else | |
2247 | write_enn (own_buf); | |
1b3f6016 | 2248 | |
52fb6437 NS |
2249 | return; |
2250 | } | |
2251 | ||
be2a5f71 | 2252 | /* Protocol features query. */ |
61012eef | 2253 | if (startswith (own_buf, "qSupported") |
be2a5f71 DJ |
2254 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
2255 | { | |
95954743 | 2256 | char *p = &own_buf[10]; |
fa593d66 | 2257 | int gdb_supports_qRelocInsn = 0; |
95954743 PA |
2258 | |
2259 | /* Process each feature being provided by GDB. The first | |
2260 | feature will follow a ':', and latter features will follow | |
2261 | ';'. */ | |
2262 | if (*p == ':') | |
d149dd1d PA |
2263 | { |
2264 | char **qsupported = NULL; | |
2265 | int count = 0; | |
06e03fff | 2266 | int unknown = 0; |
d149dd1d PA |
2267 | int i; |
2268 | ||
2269 | /* Two passes, to avoid nested strtok calls in | |
2270 | target_process_qsupported. */ | |
ca3a04f6 CB |
2271 | char *saveptr; |
2272 | for (p = strtok_r (p + 1, ";", &saveptr); | |
d149dd1d | 2273 | p != NULL; |
ca3a04f6 | 2274 | p = strtok_r (NULL, ";", &saveptr)) |
d149dd1d PA |
2275 | { |
2276 | count++; | |
224c3ddb | 2277 | qsupported = XRESIZEVEC (char *, qsupported, count); |
d149dd1d PA |
2278 | qsupported[count - 1] = xstrdup (p); |
2279 | } | |
2280 | ||
2281 | for (i = 0; i < count; i++) | |
2282 | { | |
2283 | p = qsupported[i]; | |
2284 | if (strcmp (p, "multiprocess+") == 0) | |
2285 | { | |
2286 | /* GDB supports and wants multi-process support if | |
2287 | possible. */ | |
2288 | if (target_supports_multi_process ()) | |
c12a5089 | 2289 | cs.multi_process = 1; |
d149dd1d | 2290 | } |
fa593d66 PA |
2291 | else if (strcmp (p, "qRelocInsn+") == 0) |
2292 | { | |
2293 | /* GDB supports relocate instruction requests. */ | |
2294 | gdb_supports_qRelocInsn = 1; | |
2295 | } | |
1ec68e26 PA |
2296 | else if (strcmp (p, "swbreak+") == 0) |
2297 | { | |
2298 | /* GDB wants us to report whether a trap is caused | |
2299 | by a software breakpoint and for us to handle PC | |
2300 | adjustment if necessary on this target. */ | |
2301 | if (target_supports_stopped_by_sw_breakpoint ()) | |
c12a5089 | 2302 | cs.swbreak_feature = 1; |
1ec68e26 PA |
2303 | } |
2304 | else if (strcmp (p, "hwbreak+") == 0) | |
2305 | { | |
2306 | /* GDB wants us to report whether a trap is caused | |
2307 | by a hardware breakpoint. */ | |
2308 | if (target_supports_stopped_by_hw_breakpoint ()) | |
c12a5089 | 2309 | cs.hwbreak_feature = 1; |
1ec68e26 | 2310 | } |
89245bc0 DB |
2311 | else if (strcmp (p, "fork-events+") == 0) |
2312 | { | |
2313 | /* GDB supports and wants fork events if possible. */ | |
2314 | if (target_supports_fork_events ()) | |
c12a5089 | 2315 | cs.report_fork_events = 1; |
89245bc0 DB |
2316 | } |
2317 | else if (strcmp (p, "vfork-events+") == 0) | |
2318 | { | |
2319 | /* GDB supports and wants vfork events if possible. */ | |
2320 | if (target_supports_vfork_events ()) | |
c12a5089 | 2321 | cs.report_vfork_events = 1; |
89245bc0 | 2322 | } |
7c5d0fad | 2323 | else if (strcmp (p, "exec-events+") == 0) |
94585166 DB |
2324 | { |
2325 | /* GDB supports and wants exec events if possible. */ | |
2326 | if (target_supports_exec_events ()) | |
c12a5089 | 2327 | cs.report_exec_events = 1; |
94585166 | 2328 | } |
750ce8d1 | 2329 | else if (strcmp (p, "vContSupported+") == 0) |
c12a5089 | 2330 | cs.vCont_supported = 1; |
65706a29 PA |
2331 | else if (strcmp (p, "QThreadEvents+") == 0) |
2332 | ; | |
f2faf941 PA |
2333 | else if (strcmp (p, "no-resumed+") == 0) |
2334 | { | |
2335 | /* GDB supports and wants TARGET_WAITKIND_NO_RESUMED | |
2336 | events. */ | |
3e6ec53a | 2337 | report_no_resumed = true; |
f2faf941 | 2338 | } |
d149dd1d | 2339 | else |
06e03fff PA |
2340 | { |
2341 | /* Move the unknown features all together. */ | |
2342 | qsupported[i] = NULL; | |
2343 | qsupported[unknown] = p; | |
2344 | unknown++; | |
2345 | } | |
d149dd1d PA |
2346 | } |
2347 | ||
06e03fff PA |
2348 | /* Give the target backend a chance to process the unknown |
2349 | features. */ | |
2350 | target_process_qsupported (qsupported, unknown); | |
2351 | ||
2352 | for (i = 0; i < count; i++) | |
2353 | free (qsupported[i]); | |
d149dd1d PA |
2354 | free (qsupported); |
2355 | } | |
95954743 | 2356 | |
9b224c5e | 2357 | sprintf (own_buf, |
0a2dde4a SDJ |
2358 | "PacketSize=%x;QPassSignals+;QProgramSignals+;" |
2359 | "QStartupWithShell+;QEnvironmentHexEncoded+;" | |
bc3b087d SDJ |
2360 | "QEnvironmentReset+;QEnvironmentUnset+;" |
2361 | "QSetWorkingDir+", | |
9b224c5e | 2362 | PBUFSIZ - 1); |
0876f84a | 2363 | |
82075af2 JS |
2364 | if (target_supports_catch_syscall ()) |
2365 | strcat (own_buf, ";QCatchSyscalls+"); | |
2366 | ||
2268b414 | 2367 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
2368 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
2369 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
2370 | else |
2371 | { | |
2372 | /* We do not have any hook to indicate whether the non-SVR4 target | |
2373 | backend supports qXfer:libraries:read, so always report it. */ | |
2374 | strcat (own_buf, ";qXfer:libraries:read+"); | |
2375 | } | |
255e7678 | 2376 | |
0876f84a | 2377 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 2378 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 2379 | |
4aa995e1 PA |
2380 | if (the_target->qxfer_siginfo != NULL) |
2381 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
2382 | ||
78d85199 YQ |
2383 | if (the_target->read_loadmap != NULL) |
2384 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
2385 | ||
221c031f UW |
2386 | /* We always report qXfer:features:read, as targets may |
2387 | install XML files on a subsequent call to arch_setup. | |
2388 | If we reported to GDB on startup that we don't support | |
2389 | qXfer:feature:read at all, we will never be re-queried. */ | |
2390 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 2391 | |
c12a5089 | 2392 | if (cs.transport_is_reliable) |
a6f3e723 | 2393 | strcat (own_buf, ";QStartNoAckMode+"); |
07e059b5 VP |
2394 | |
2395 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 2396 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 2397 | |
cf8fd78b PA |
2398 | if (target_supports_multi_process ()) |
2399 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 2400 | |
89245bc0 DB |
2401 | if (target_supports_fork_events ()) |
2402 | strcat (own_buf, ";fork-events+"); | |
2403 | ||
2404 | if (target_supports_vfork_events ()) | |
2405 | strcat (own_buf, ";vfork-events+"); | |
2406 | ||
94585166 DB |
2407 | if (target_supports_exec_events ()) |
2408 | strcat (own_buf, ";exec-events+"); | |
2409 | ||
bd99dc85 PA |
2410 | if (target_supports_non_stop ()) |
2411 | strcat (own_buf, ";QNonStop+"); | |
2412 | ||
03583c20 UW |
2413 | if (target_supports_disable_randomization ()) |
2414 | strcat (own_buf, ";QDisableRandomization+"); | |
2415 | ||
dc146f7c VP |
2416 | strcat (own_buf, ";qXfer:threads:read+"); |
2417 | ||
219f2f23 PA |
2418 | if (target_supports_tracepoints ()) |
2419 | { | |
2420 | strcat (own_buf, ";ConditionalTracepoints+"); | |
2421 | strcat (own_buf, ";TraceStateVariables+"); | |
2422 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 2423 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
2424 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
2425 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 2426 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 2427 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 2428 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 2429 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 2430 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 2431 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 2432 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
2433 | } |
2434 | ||
bd2b2909 AT |
2435 | if (target_supports_hardware_single_step () |
2436 | || target_supports_software_single_step () ) | |
70b90b91 | 2437 | { |
70b90b91 YQ |
2438 | strcat (own_buf, ";ConditionalBreakpoints+"); |
2439 | } | |
d3ce09f5 | 2440 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 2441 | |
d1feda86 YQ |
2442 | if (target_supports_agent ()) |
2443 | strcat (own_buf, ";QAgent+"); | |
2444 | ||
043c3577 | 2445 | supported_btrace_packets (own_buf); |
9accd112 | 2446 | |
1ec68e26 PA |
2447 | if (target_supports_stopped_by_sw_breakpoint ()) |
2448 | strcat (own_buf, ";swbreak+"); | |
2449 | ||
2450 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2451 | strcat (own_buf, ";hwbreak+"); | |
2452 | ||
e57f1de3 GB |
2453 | if (the_target->pid_to_exec_file != NULL) |
2454 | strcat (own_buf, ";qXfer:exec-file:read+"); | |
2455 | ||
750ce8d1 YQ |
2456 | strcat (own_buf, ";vContSupported+"); |
2457 | ||
65706a29 PA |
2458 | strcat (own_buf, ";QThreadEvents+"); |
2459 | ||
f2faf941 PA |
2460 | strcat (own_buf, ";no-resumed+"); |
2461 | ||
14d2069a GB |
2462 | /* Reinitialize components as needed for the new connection. */ |
2463 | hostio_handle_new_gdb_connection (); | |
de0d863e DB |
2464 | target_handle_new_gdb_connection (); |
2465 | ||
be2a5f71 DJ |
2466 | return; |
2467 | } | |
2468 | ||
dae5f5cf DJ |
2469 | /* Thread-local storage support. */ |
2470 | if (the_target->get_tls_address != NULL | |
61012eef | 2471 | && startswith (own_buf, "qGetTLSAddr:")) |
dae5f5cf DJ |
2472 | { |
2473 | char *p = own_buf + 12; | |
5b1c542e | 2474 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 2475 | int i, err; |
95954743 | 2476 | ptid_t ptid = null_ptid; |
dae5f5cf | 2477 | |
f8a4e119 | 2478 | require_running_or_return (own_buf); |
2d717e4f | 2479 | |
dae5f5cf DJ |
2480 | for (i = 0; i < 3; i++) |
2481 | { | |
2482 | char *p2; | |
2483 | int len; | |
2484 | ||
2485 | if (p == NULL) | |
2486 | break; | |
2487 | ||
2488 | p2 = strchr (p, ','); | |
2489 | if (p2) | |
2490 | { | |
2491 | len = p2 - p; | |
2492 | p2++; | |
2493 | } | |
2494 | else | |
2495 | { | |
2496 | len = strlen (p); | |
2497 | p2 = NULL; | |
2498 | } | |
2499 | ||
5b1c542e | 2500 | if (i == 0) |
95954743 | 2501 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
2502 | else |
2503 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
2504 | p = p2; |
2505 | } | |
2506 | ||
2507 | if (p != NULL || i < 3) | |
2508 | err = 1; | |
2509 | else | |
2510 | { | |
e09875d4 | 2511 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
2512 | |
2513 | if (thread == NULL) | |
2514 | err = 2; | |
2515 | else | |
5b1c542e | 2516 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
2517 | &address); |
2518 | } | |
2519 | ||
2520 | if (err == 0) | |
2521 | { | |
c6f46ca0 | 2522 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
2523 | return; |
2524 | } | |
2525 | else if (err > 0) | |
2526 | { | |
2527 | write_enn (own_buf); | |
2528 | return; | |
2529 | } | |
2530 | ||
2531 | /* Otherwise, pretend we do not understand this packet. */ | |
2532 | } | |
2533 | ||
711e434b PM |
2534 | /* Windows OS Thread Information Block address support. */ |
2535 | if (the_target->get_tib_address != NULL | |
61012eef | 2536 | && startswith (own_buf, "qGetTIBAddr:")) |
711e434b | 2537 | { |
256642e8 | 2538 | const char *annex; |
711e434b PM |
2539 | int n; |
2540 | CORE_ADDR tlb; | |
2541 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2542 | ||
2543 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
2544 | if (n == 1) | |
2545 | { | |
c6f46ca0 | 2546 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2547 | return; |
2548 | } | |
2549 | else if (n == 0) | |
2550 | { | |
2551 | write_enn (own_buf); | |
2552 | return; | |
2553 | } | |
2554 | return; | |
2555 | } | |
2556 | ||
c74d0ad8 | 2557 | /* Handle "monitor" commands. */ |
61012eef | 2558 | if (startswith (own_buf, "qRcmd,")) |
c74d0ad8 | 2559 | { |
224c3ddb | 2560 | char *mon = (char *) malloc (PBUFSIZ); |
c74d0ad8 DJ |
2561 | int len = strlen (own_buf + 6); |
2562 | ||
aef93bd7 DE |
2563 | if (mon == NULL) |
2564 | { | |
2565 | write_enn (own_buf); | |
2566 | return; | |
2567 | } | |
2568 | ||
ff0e980e TT |
2569 | if ((len % 2) != 0 |
2570 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2571 | { |
2572 | write_enn (own_buf); | |
2573 | free (mon); | |
2574 | return; | |
2575 | } | |
2576 | mon[len / 2] = '\0'; | |
2577 | ||
2578 | write_ok (own_buf); | |
2579 | ||
cdbfd419 PP |
2580 | if (the_target->handle_monitor_command == NULL |
2581 | || (*the_target->handle_monitor_command) (mon) == 0) | |
2582 | /* Default processing. */ | |
d73f2619 | 2583 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2584 | |
2585 | free (mon); | |
2586 | return; | |
2587 | } | |
2588 | ||
61012eef | 2589 | if (startswith (own_buf, "qSearch:memory:")) |
08388c79 | 2590 | { |
f8a4e119 | 2591 | require_running_or_return (own_buf); |
08388c79 DE |
2592 | handle_search_memory (own_buf, packet_len); |
2593 | return; | |
2594 | } | |
2595 | ||
95954743 | 2596 | if (strcmp (own_buf, "qAttached") == 0 |
61012eef | 2597 | || startswith (own_buf, "qAttached:")) |
0b16c5cf | 2598 | { |
95954743 PA |
2599 | struct process_info *process; |
2600 | ||
2601 | if (own_buf[sizeof ("qAttached") - 1]) | |
2602 | { | |
2603 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
9179355e | 2604 | process = find_process_pid (pid); |
95954743 PA |
2605 | } |
2606 | else | |
2607 | { | |
f8a4e119 | 2608 | require_running_or_return (own_buf); |
95954743 PA |
2609 | process = current_process (); |
2610 | } | |
2611 | ||
2612 | if (process == NULL) | |
2613 | { | |
2614 | write_enn (own_buf); | |
2615 | return; | |
2616 | } | |
2617 | ||
2618 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2619 | return; |
2620 | } | |
2621 | ||
61012eef | 2622 | if (startswith (own_buf, "qCRC:")) |
30ba68cb MS |
2623 | { |
2624 | /* CRC check (compare-section). */ | |
256642e8 | 2625 | const char *comma; |
aca22551 | 2626 | ULONGEST base; |
30ba68cb MS |
2627 | int len; |
2628 | unsigned long long crc; | |
2629 | ||
f8a4e119 | 2630 | require_running_or_return (own_buf); |
aca22551 | 2631 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2632 | if (*comma++ != ',') |
2633 | { | |
2634 | write_enn (own_buf); | |
2635 | return; | |
2636 | } | |
2637 | len = strtoul (comma, NULL, 16); | |
2638 | crc = crc32 (base, len, 0xffffffff); | |
2639 | /* Check for memory failure. */ | |
2640 | if (crc == (unsigned long long) -1) | |
2641 | { | |
2642 | write_enn (own_buf); | |
2643 | return; | |
2644 | } | |
2645 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2646 | return; | |
2647 | } | |
2648 | ||
d08aafef PA |
2649 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2650 | return; | |
2651 | ||
219f2f23 PA |
2652 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2653 | return; | |
2654 | ||
ce3a066d DJ |
2655 | /* Otherwise we didn't know what packet it was. Say we didn't |
2656 | understand it. */ | |
2657 | own_buf[0] = 0; | |
2658 | } | |
2659 | ||
ce1a5b52 | 2660 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2661 | static void resume (struct thread_resume *actions, size_t n); |
2662 | ||
649ebbca DE |
2663 | /* The callback that is passed to visit_actioned_threads. */ |
2664 | typedef int (visit_actioned_threads_callback_ftype) | |
2665 | (const struct thread_resume *, struct thread_info *); | |
2666 | ||
b7ea362b PA |
2667 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2668 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca | 2669 | is found or CALLBACK results false. |
eaddb425 | 2670 | Note: This function is itself a callback for find_thread. */ |
b7ea362b | 2671 | |
eaddb425 SM |
2672 | static bool |
2673 | visit_actioned_threads (thread_info *thread, | |
2674 | const struct thread_resume *actions, | |
2675 | size_t num_actions, | |
2676 | visit_actioned_threads_callback_ftype *callback) | |
b7ea362b | 2677 | { |
eaddb425 | 2678 | for (size_t i = 0; i < num_actions; i++) |
b7ea362b | 2679 | { |
649ebbca | 2680 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2681 | |
d7e15655 TT |
2682 | if (action->thread == minus_one_ptid |
2683 | || action->thread == thread->id | |
e99b03dc | 2684 | || ((action->thread.pid () |
9c80ecd6 | 2685 | == thread->id.pid ()) |
e38504b3 | 2686 | && action->thread.lwp () == -1)) |
b7ea362b | 2687 | { |
649ebbca | 2688 | if ((*callback) (action, thread)) |
eaddb425 | 2689 | return true; |
b7ea362b PA |
2690 | } |
2691 | } | |
2692 | ||
eaddb425 | 2693 | return false; |
b7ea362b PA |
2694 | } |
2695 | ||
2696 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2697 | status to report, report it now. */ | |
2698 | ||
2699 | static int | |
2700 | handle_pending_status (const struct thread_resume *resumption, | |
2701 | struct thread_info *thread) | |
2702 | { | |
c12a5089 | 2703 | client_state &cs = get_client_state (); |
b7ea362b PA |
2704 | if (thread->status_pending_p) |
2705 | { | |
2706 | thread->status_pending_p = 0; | |
2707 | ||
c12a5089 SC |
2708 | cs.last_status = thread->last_status; |
2709 | cs.last_ptid = thread->id; | |
2710 | prepare_resume_reply (cs.own_buf, cs.last_ptid, &cs.last_status); | |
b7ea362b PA |
2711 | return 1; |
2712 | } | |
2713 | return 0; | |
2714 | } | |
ce1a5b52 | 2715 | |
64386c31 | 2716 | /* Parse vCont packets. */ |
5b3da067 | 2717 | static void |
5b1c542e | 2718 | handle_v_cont (char *own_buf) |
64386c31 | 2719 | { |
256642e8 | 2720 | const char *p; |
64386c31 | 2721 | int n = 0, i = 0; |
2bd7c093 | 2722 | struct thread_resume *resume_info; |
436252de | 2723 | struct thread_resume default_action { null_ptid }; |
64386c31 DJ |
2724 | |
2725 | /* Count the number of semicolons in the packet. There should be one | |
2726 | for every action. */ | |
2727 | p = &own_buf[5]; | |
2728 | while (p) | |
2729 | { | |
2730 | n++; | |
2731 | p++; | |
2732 | p = strchr (p, ';'); | |
2733 | } | |
2bd7c093 | 2734 | |
224c3ddb | 2735 | resume_info = (struct thread_resume *) malloc (n * sizeof (resume_info[0])); |
aef93bd7 DE |
2736 | if (resume_info == NULL) |
2737 | goto err; | |
64386c31 | 2738 | |
64386c31 | 2739 | p = &own_buf[5]; |
64386c31 DJ |
2740 | while (*p) |
2741 | { | |
2742 | p++; | |
2743 | ||
c2d6af84 PA |
2744 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2745 | ||
64386c31 | 2746 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2747 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2748 | else if (p[0] == 'r') |
2749 | resume_info[i].kind = resume_step; | |
64386c31 | 2750 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2751 | resume_info[i].kind = resume_continue; |
2752 | else if (p[0] == 't') | |
2753 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2754 | else |
2755 | goto err; | |
2756 | ||
2757 | if (p[0] == 'S' || p[0] == 'C') | |
2758 | { | |
256642e8 PA |
2759 | char *q; |
2760 | int sig = strtol (p + 1, &q, 16); | |
64386c31 DJ |
2761 | if (p == q) |
2762 | goto err; | |
2763 | p = q; | |
2764 | ||
e053fbc4 | 2765 | if (!gdb_signal_to_host_p ((enum gdb_signal) sig)) |
64386c31 | 2766 | goto err; |
e053fbc4 | 2767 | resume_info[i].sig = gdb_signal_to_host ((enum gdb_signal) sig); |
64386c31 | 2768 | } |
c2d6af84 PA |
2769 | else if (p[0] == 'r') |
2770 | { | |
6740dc9c | 2771 | ULONGEST addr; |
c2d6af84 | 2772 | |
6740dc9c PA |
2773 | p = unpack_varlen_hex (p + 1, &addr); |
2774 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2775 | |
6740dc9c PA |
2776 | if (*p != ',') |
2777 | goto err; | |
c2d6af84 | 2778 | |
6740dc9c PA |
2779 | p = unpack_varlen_hex (p + 1, &addr); |
2780 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2781 | } |
64386c31 DJ |
2782 | else |
2783 | { | |
64386c31 DJ |
2784 | p = p + 1; |
2785 | } | |
2786 | ||
2787 | if (p[0] == 0) | |
2788 | { | |
95954743 | 2789 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2790 | default_action = resume_info[i]; |
2791 | ||
2792 | /* Note: we don't increment i here, we'll overwrite this entry | |
2793 | the next time through. */ | |
2794 | } | |
2795 | else if (p[0] == ':') | |
2796 | { | |
256642e8 | 2797 | const char *q; |
95954743 | 2798 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2799 | |
64386c31 DJ |
2800 | if (p == q) |
2801 | goto err; | |
2802 | p = q; | |
2803 | if (p[0] != ';' && p[0] != 0) | |
2804 | goto err; | |
2805 | ||
95954743 | 2806 | resume_info[i].thread = ptid; |
a06660f7 | 2807 | |
64386c31 DJ |
2808 | i++; |
2809 | } | |
2810 | } | |
2811 | ||
2bd7c093 PA |
2812 | if (i < n) |
2813 | resume_info[i] = default_action; | |
64386c31 | 2814 | |
b7ea362b PA |
2815 | resume (resume_info, n); |
2816 | free (resume_info); | |
2817 | return; | |
2818 | ||
2819 | err: | |
2820 | write_enn (own_buf); | |
2821 | free (resume_info); | |
2822 | return; | |
2823 | } | |
2824 | ||
2825 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2826 | ||
2827 | static void | |
2828 | resume (struct thread_resume *actions, size_t num_actions) | |
2829 | { | |
c12a5089 | 2830 | client_state &cs = get_client_state (); |
bd99dc85 | 2831 | if (!non_stop) |
b7ea362b PA |
2832 | { |
2833 | /* Check if among the threads that GDB wants actioned, there's | |
2834 | one with a pending status to report. If so, skip actually | |
2835 | resuming/stopping and report the pending event | |
2836 | immediately. */ | |
649ebbca | 2837 | |
eaddb425 SM |
2838 | thread_info *thread_with_status = find_thread ([&] (thread_info *thread) |
2839 | { | |
2840 | return visit_actioned_threads (thread, actions, num_actions, | |
2841 | handle_pending_status); | |
2842 | }); | |
2843 | ||
2844 | if (thread_with_status != NULL) | |
b7ea362b | 2845 | return; |
bd99dc85 | 2846 | |
b7ea362b PA |
2847 | enable_async_io (); |
2848 | } | |
64386c31 | 2849 | |
b7ea362b | 2850 | (*the_target->resume) (actions, num_actions); |
64386c31 | 2851 | |
bd99dc85 | 2852 | if (non_stop) |
c12a5089 | 2853 | write_ok (cs.own_buf); |
bd99dc85 PA |
2854 | else |
2855 | { | |
c12a5089 | 2856 | cs.last_ptid = mywait (minus_one_ptid, &cs.last_status, 0, 1); |
ce1a5b52 | 2857 | |
c12a5089 | 2858 | if (cs.last_status.kind == TARGET_WAITKIND_NO_RESUMED |
f2faf941 | 2859 | && !report_no_resumed) |
fa96cb38 | 2860 | { |
f2faf941 PA |
2861 | /* The client does not support this stop reply. At least |
2862 | return error. */ | |
c12a5089 | 2863 | sprintf (cs.own_buf, "E.No unwaited-for children left."); |
fa96cb38 PA |
2864 | disable_async_io (); |
2865 | return; | |
2866 | } | |
2867 | ||
c12a5089 SC |
2868 | if (cs.last_status.kind != TARGET_WAITKIND_EXITED |
2869 | && cs.last_status.kind != TARGET_WAITKIND_SIGNALLED | |
2870 | && cs.last_status.kind != TARGET_WAITKIND_NO_RESUMED) | |
2871 | current_thread->last_status = cs.last_status; | |
d20a8ad9 | 2872 | |
ce1a5b52 PA |
2873 | /* From the client's perspective, all-stop mode always stops all |
2874 | threads implicitly (and the target backend has already done | |
2875 | so by now). Tag all threads as "want-stopped", so we don't | |
2876 | resume them implicitly without the client telling us to. */ | |
2877 | gdb_wants_all_threads_stopped (); | |
c12a5089 | 2878 | prepare_resume_reply (cs.own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 | 2879 | disable_async_io (); |
6bd31874 | 2880 | |
c12a5089 SC |
2881 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
2882 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2883 | target_mourn_inferior (cs.last_ptid); | |
bd99dc85 | 2884 | } |
64386c31 DJ |
2885 | } |
2886 | ||
2d717e4f | 2887 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
5b3da067 | 2888 | static int |
5b1c542e | 2889 | handle_v_attach (char *own_buf) |
2d717e4f | 2890 | { |
c12a5089 | 2891 | client_state &cs = get_client_state (); |
2d717e4f DJ |
2892 | int pid; |
2893 | ||
2894 | pid = strtol (own_buf + 8, NULL, 16); | |
50fa3001 | 2895 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2896 | { |
aeba519e PA |
2897 | /* Don't report shared library events after attaching, even if |
2898 | some libraries are preloaded. GDB will always poll the | |
2899 | library list. Avoids the "stopped by shared library event" | |
2900 | notice on the GDB side. */ | |
2901 | dlls_changed = 0; | |
bd99dc85 PA |
2902 | |
2903 | if (non_stop) | |
2904 | { | |
2905 | /* In non-stop, we don't send a resume reply. Stop events | |
2906 | will follow up using the normal notification | |
2907 | mechanism. */ | |
2908 | write_ok (own_buf); | |
2909 | } | |
2910 | else | |
c12a5089 | 2911 | prepare_resume_reply (own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 | 2912 | |
2d717e4f DJ |
2913 | return 1; |
2914 | } | |
2915 | else | |
2916 | { | |
2917 | write_enn (own_buf); | |
2918 | return 0; | |
2919 | } | |
2920 | } | |
2921 | ||
2922 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2923 | static int | |
5b1c542e | 2924 | handle_v_run (char *own_buf) |
2d717e4f | 2925 | { |
c12a5089 | 2926 | client_state &cs = get_client_state (); |
7c5ded6a SDJ |
2927 | char *p, *next_p; |
2928 | std::vector<char *> new_argv; | |
2090129c | 2929 | char *new_program_name = NULL; |
2d717e4f DJ |
2930 | int i, new_argc; |
2931 | ||
2932 | new_argc = 0; | |
2933 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2934 | { | |
2935 | p++; | |
2936 | new_argc++; | |
2937 | } | |
2938 | ||
7c5ded6a | 2939 | for (i = 0, p = own_buf + strlen ("vRun;"); *p; p = next_p, ++i) |
2d717e4f DJ |
2940 | { |
2941 | next_p = strchr (p, ';'); | |
2942 | if (next_p == NULL) | |
2943 | next_p = p + strlen (p); | |
2944 | ||
2945 | if (i == 0 && p == next_p) | |
7c5ded6a SDJ |
2946 | { |
2947 | /* No program specified. */ | |
2090129c SDJ |
2948 | new_program_name = NULL; |
2949 | } | |
2950 | else if (p == next_p) | |
2951 | { | |
2952 | /* Empty argument. */ | |
2953 | new_argv.push_back (xstrdup ("''")); | |
7c5ded6a | 2954 | } |
2d717e4f DJ |
2955 | else |
2956 | { | |
7c5ded6a | 2957 | size_t len = (next_p - p) / 2; |
2090129c | 2958 | /* ARG is the unquoted argument received via the RSP. */ |
7c5ded6a | 2959 | char *arg = (char *) xmalloc (len + 1); |
2090129c SDJ |
2960 | /* FULL_ARGS will contain the quoted version of ARG. */ |
2961 | char *full_arg = (char *) xmalloc ((len + 1) * 2); | |
2962 | /* These are pointers used to navigate the strings above. */ | |
2963 | char *tmp_arg = arg; | |
2964 | char *tmp_full_arg = full_arg; | |
2965 | int need_quote = 0; | |
7c5ded6a SDJ |
2966 | |
2967 | hex2bin (p, (gdb_byte *) arg, len); | |
2968 | arg[len] = '\0'; | |
2d717e4f | 2969 | |
2090129c SDJ |
2970 | while (*tmp_arg != '\0') |
2971 | { | |
2972 | switch (*tmp_arg) | |
2973 | { | |
2974 | case '\n': | |
2975 | /* Quote \n. */ | |
2976 | *tmp_full_arg = '\''; | |
2977 | ++tmp_full_arg; | |
2978 | need_quote = 1; | |
2979 | break; | |
2980 | ||
2981 | case '\'': | |
2982 | /* Quote single quote. */ | |
2983 | *tmp_full_arg = '\\'; | |
2984 | ++tmp_full_arg; | |
2985 | break; | |
2986 | ||
2987 | default: | |
2988 | break; | |
2989 | } | |
2990 | ||
2991 | *tmp_full_arg = *tmp_arg; | |
2992 | ++tmp_full_arg; | |
2993 | ++tmp_arg; | |
2994 | } | |
2995 | ||
2996 | if (need_quote) | |
2997 | *tmp_full_arg++ = '\''; | |
2998 | ||
2999 | /* Finish FULL_ARG and push it into the vector containing | |
3000 | the argv. */ | |
3001 | *tmp_full_arg = '\0'; | |
3002 | if (i == 0) | |
3003 | new_program_name = full_arg; | |
3004 | else | |
3005 | new_argv.push_back (full_arg); | |
3006 | xfree (arg); | |
3007 | } | |
2d717e4f DJ |
3008 | if (*next_p) |
3009 | next_p++; | |
2d717e4f | 3010 | } |
7c5ded6a | 3011 | new_argv.push_back (NULL); |
2d717e4f | 3012 | |
2090129c | 3013 | if (new_program_name == NULL) |
2d717e4f | 3014 | { |
f142445f DJ |
3015 | /* GDB didn't specify a program to run. Use the program from the |
3016 | last run with the new argument list. */ | |
25e3c82c | 3017 | if (program_path.get () == NULL) |
2d717e4f DJ |
3018 | { |
3019 | write_enn (own_buf); | |
7c5ded6a | 3020 | free_vector_argv (new_argv); |
2d717e4f DJ |
3021 | return 0; |
3022 | } | |
2090129c SDJ |
3023 | } |
3024 | else | |
25e3c82c | 3025 | program_path.set (gdb::unique_xmalloc_ptr<char> (new_program_name)); |
f142445f | 3026 | |
aef93bd7 | 3027 | /* Free the old argv and install the new one. */ |
2090129c SDJ |
3028 | free_vector_argv (program_args); |
3029 | program_args = new_argv; | |
3030 | ||
25e3c82c | 3031 | create_inferior (program_path.get (), program_args); |
2d717e4f | 3032 | |
c12a5089 | 3033 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
2d717e4f | 3034 | { |
c12a5089 | 3035 | prepare_resume_reply (own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 PA |
3036 | |
3037 | /* In non-stop, sending a resume reply doesn't set the general | |
3038 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
3039 | query which is the main thread of the new inferior. */ | |
3040 | if (non_stop) | |
c12a5089 | 3041 | cs.general_thread = cs.last_ptid; |
bd99dc85 | 3042 | |
2d717e4f DJ |
3043 | return 1; |
3044 | } | |
3045 | else | |
3046 | { | |
3047 | write_enn (own_buf); | |
3048 | return 0; | |
3049 | } | |
3050 | } | |
3051 | ||
95954743 | 3052 | /* Kill process. Return 1 if successful, 0 if failure. */ |
5b3da067 | 3053 | static int |
95954743 PA |
3054 | handle_v_kill (char *own_buf) |
3055 | { | |
c12a5089 | 3056 | client_state &cs = get_client_state (); |
95954743 PA |
3057 | int pid; |
3058 | char *p = &own_buf[6]; | |
c12a5089 | 3059 | if (cs.multi_process) |
0f54c268 PM |
3060 | pid = strtol (p, NULL, 16); |
3061 | else | |
3062 | pid = signal_pid; | |
a780ef4f PA |
3063 | |
3064 | process_info *proc = find_process_pid (pid); | |
3065 | ||
3066 | if (proc != nullptr && kill_inferior (proc) == 0) | |
95954743 | 3067 | { |
c12a5089 SC |
3068 | cs.last_status.kind = TARGET_WAITKIND_SIGNALLED; |
3069 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
f2907e49 | 3070 | cs.last_ptid = ptid_t (pid); |
c12a5089 | 3071 | discard_queued_stop_replies (cs.last_ptid); |
95954743 PA |
3072 | write_ok (own_buf); |
3073 | return 1; | |
3074 | } | |
3075 | else | |
3076 | { | |
3077 | write_enn (own_buf); | |
3078 | return 0; | |
3079 | } | |
3080 | } | |
3081 | ||
64386c31 | 3082 | /* Handle all of the extended 'v' packets. */ |
28170b88 | 3083 | void |
5b1c542e | 3084 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 3085 | { |
c12a5089 | 3086 | client_state &cs = get_client_state (); |
db42f210 | 3087 | if (!disable_packet_vCont) |
64386c31 | 3088 | { |
de979965 PA |
3089 | if (strcmp (own_buf, "vCtrlC") == 0) |
3090 | { | |
3091 | (*the_target->request_interrupt) (); | |
3092 | write_ok (own_buf); | |
3093 | return; | |
3094 | } | |
3095 | ||
61012eef | 3096 | if (startswith (own_buf, "vCont;")) |
db42f210 | 3097 | { |
5b1c542e | 3098 | handle_v_cont (own_buf); |
db42f210 PA |
3099 | return; |
3100 | } | |
64386c31 | 3101 | |
61012eef | 3102 | if (startswith (own_buf, "vCont?")) |
db42f210 | 3103 | { |
750ce8d1 YQ |
3104 | strcpy (own_buf, "vCont;c;C;t"); |
3105 | ||
21536b36 YQ |
3106 | if (target_supports_hardware_single_step () |
3107 | || target_supports_software_single_step () | |
c12a5089 | 3108 | || !cs.vCont_supported) |
750ce8d1 | 3109 | { |
21536b36 YQ |
3110 | /* If target supports single step either by hardware or by |
3111 | software, add actions s and S to the list of supported | |
3112 | actions. On the other hand, if GDB doesn't request the | |
3113 | supported vCont actions in qSupported packet, add s and | |
3114 | S to the list too. */ | |
750ce8d1 YQ |
3115 | own_buf = own_buf + strlen (own_buf); |
3116 | strcpy (own_buf, ";s;S"); | |
3117 | } | |
3118 | ||
c2d6af84 PA |
3119 | if (target_supports_range_stepping ()) |
3120 | { | |
3121 | own_buf = own_buf + strlen (own_buf); | |
3122 | strcpy (own_buf, ";r"); | |
3123 | } | |
db42f210 PA |
3124 | return; |
3125 | } | |
64386c31 DJ |
3126 | } |
3127 | ||
61012eef | 3128 | if (startswith (own_buf, "vFile:") |
a6b151f1 DJ |
3129 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
3130 | return; | |
3131 | ||
61012eef | 3132 | if (startswith (own_buf, "vAttach;")) |
2d717e4f | 3133 | { |
c12a5089 | 3134 | if ((!extended_protocol || !cs.multi_process) && target_running ()) |
2d717e4f | 3135 | { |
fd96d250 PA |
3136 | fprintf (stderr, "Already debugging a process\n"); |
3137 | write_enn (own_buf); | |
3138 | return; | |
2d717e4f | 3139 | } |
5b1c542e | 3140 | handle_v_attach (own_buf); |
2d717e4f DJ |
3141 | return; |
3142 | } | |
3143 | ||
61012eef | 3144 | if (startswith (own_buf, "vRun;")) |
2d717e4f | 3145 | { |
c12a5089 | 3146 | if ((!extended_protocol || !cs.multi_process) && target_running ()) |
2d717e4f | 3147 | { |
fd96d250 PA |
3148 | fprintf (stderr, "Already debugging a process\n"); |
3149 | write_enn (own_buf); | |
3150 | return; | |
2d717e4f | 3151 | } |
5b1c542e | 3152 | handle_v_run (own_buf); |
2d717e4f DJ |
3153 | return; |
3154 | } | |
3155 | ||
61012eef | 3156 | if (startswith (own_buf, "vKill;")) |
95954743 PA |
3157 | { |
3158 | if (!target_running ()) | |
3159 | { | |
3160 | fprintf (stderr, "No process to kill\n"); | |
3161 | write_enn (own_buf); | |
3162 | return; | |
3163 | } | |
3164 | handle_v_kill (own_buf); | |
3165 | return; | |
3166 | } | |
3167 | ||
14a00470 YQ |
3168 | if (handle_notif_ack (own_buf, packet_len)) |
3169 | return; | |
bd99dc85 | 3170 | |
64386c31 DJ |
3171 | /* Otherwise we didn't know what packet it was. Say we didn't |
3172 | understand it. */ | |
3173 | own_buf[0] = 0; | |
3174 | return; | |
3175 | } | |
3176 | ||
0bfdf32f | 3177 | /* Resume thread and wait for another event. In non-stop mode, |
bd99dc85 PA |
3178 | don't really wait here, but return immediatelly to the event |
3179 | loop. */ | |
1fd7cdc2 | 3180 | static void |
5b1c542e | 3181 | myresume (char *own_buf, int step, int sig) |
64386c31 | 3182 | { |
c12a5089 | 3183 | client_state &cs = get_client_state (); |
64386c31 DJ |
3184 | struct thread_resume resume_info[2]; |
3185 | int n = 0; | |
2bd7c093 | 3186 | int valid_cont_thread; |
a20d5e98 | 3187 | |
d7e15655 TT |
3188 | valid_cont_thread = (cs.cont_thread != null_ptid |
3189 | && cs.cont_thread != minus_one_ptid); | |
2bd7c093 PA |
3190 | |
3191 | if (step || sig || valid_cont_thread) | |
64386c31 | 3192 | { |
fbd5db48 | 3193 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
3194 | if (step) |
3195 | resume_info[0].kind = resume_step; | |
3196 | else | |
3197 | resume_info[0].kind = resume_continue; | |
64386c31 | 3198 | resume_info[0].sig = sig; |
64386c31 DJ |
3199 | n++; |
3200 | } | |
2bd7c093 PA |
3201 | |
3202 | if (!valid_cont_thread) | |
3203 | { | |
95954743 | 3204 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 3205 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
3206 | resume_info[n].sig = 0; |
3207 | n++; | |
3208 | } | |
64386c31 | 3209 | |
b7ea362b | 3210 | resume (resume_info, n); |
bd99dc85 PA |
3211 | } |
3212 | ||
f0045347 | 3213 | /* Callback for for_each_thread. Make a new stop reply for each |
bd99dc85 PA |
3214 | stopped thread. */ |
3215 | ||
99078d34 SM |
3216 | static void |
3217 | queue_stop_reply_callback (thread_info *thread) | |
bd99dc85 | 3218 | { |
8336d594 PA |
3219 | /* For now, assume targets that don't have this callback also don't |
3220 | manage the thread's last_status field. */ | |
3221 | if (the_target->thread_stopped == NULL) | |
95954743 | 3222 | { |
b494cdff | 3223 | struct vstop_notif *new_notif = new struct vstop_notif; |
14a00470 | 3224 | |
9c80ecd6 | 3225 | new_notif->ptid = thread->id; |
14a00470 | 3226 | new_notif->status = thread->last_status; |
8336d594 PA |
3227 | /* Pass the last stop reply back to GDB, but don't notify |
3228 | yet. */ | |
b494cdff | 3229 | notif_event_enque (¬if_stop, new_notif); |
8336d594 PA |
3230 | } |
3231 | else | |
3232 | { | |
3233 | if (thread_stopped (thread)) | |
3234 | { | |
3235 | if (debug_threads) | |
3360c0bf | 3236 | { |
23fdd69e | 3237 | std::string status_string |
3360c0bf LM |
3238 | = target_waitstatus_to_string (&thread->last_status); |
3239 | ||
87ce2a04 | 3240 | debug_printf ("Reporting thread %s as already stopped with %s\n", |
9c80ecd6 | 3241 | target_pid_to_str (thread->id), |
23fdd69e | 3242 | status_string.c_str ()); |
3360c0bf | 3243 | } |
8336d594 | 3244 | |
d20a8ad9 PA |
3245 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
3246 | ||
8336d594 PA |
3247 | /* Pass the last stop reply back to GDB, but don't notify |
3248 | yet. */ | |
9c80ecd6 | 3249 | queue_stop_reply (thread->id, &thread->last_status); |
8336d594 | 3250 | } |
95954743 | 3251 | } |
64386c31 DJ |
3252 | } |
3253 | ||
ce1a5b52 PA |
3254 | /* Set this inferior threads's state as "want-stopped". We won't |
3255 | resume this thread until the client gives us another action for | |
3256 | it. */ | |
8336d594 PA |
3257 | |
3258 | static void | |
9c80ecd6 | 3259 | gdb_wants_thread_stopped (thread_info *thread) |
8336d594 | 3260 | { |
8336d594 PA |
3261 | thread->last_resume_kind = resume_stop; |
3262 | ||
3263 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
3264 | { | |
ce1a5b52 PA |
3265 | /* Most threads are stopped implicitly (all-stop); tag that with |
3266 | signal 0. */ | |
8336d594 | 3267 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 3268 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
3269 | } |
3270 | } | |
3271 | ||
3272 | /* Set all threads' states as "want-stopped". */ | |
3273 | ||
3274 | static void | |
3275 | gdb_wants_all_threads_stopped (void) | |
3276 | { | |
f0045347 | 3277 | for_each_thread (gdb_wants_thread_stopped); |
8336d594 PA |
3278 | } |
3279 | ||
f0045347 | 3280 | /* Callback for for_each_thread. If the thread is stopped with an |
b7ea362b PA |
3281 | interesting event, mark it as having a pending event. */ |
3282 | ||
3283 | static void | |
9c80ecd6 | 3284 | set_pending_status_callback (thread_info *thread) |
b7ea362b | 3285 | { |
b7ea362b PA |
3286 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED |
3287 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
3288 | /* A breakpoint, watchpoint or finished step from a previous | |
3289 | GDB run isn't considered interesting for a new GDB run. | |
3290 | If we left those pending, the new GDB could consider them | |
3291 | random SIGTRAPs. This leaves out real async traps. We'd | |
3292 | have to peek into the (target-specific) siginfo to | |
3293 | distinguish those. */ | |
3294 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
3295 | thread->status_pending_p = 1; | |
3296 | } | |
3297 | ||
5b1c542e PA |
3298 | /* Status handler for the '?' packet. */ |
3299 | ||
3300 | static void | |
3301 | handle_status (char *own_buf) | |
3302 | { | |
c12a5089 SC |
3303 | client_state &cs = get_client_state (); |
3304 | ||
8336d594 | 3305 | /* GDB is connected, don't forward events to the target anymore. */ |
9179355e SM |
3306 | for_each_process ([] (process_info *process) { |
3307 | process->gdb_detached = 0; | |
3308 | }); | |
bd99dc85 PA |
3309 | |
3310 | /* In non-stop mode, we must send a stop reply for each stopped | |
3311 | thread. In all-stop mode, just send one for the first stopped | |
3312 | thread we find. */ | |
3313 | ||
3314 | if (non_stop) | |
3315 | { | |
99078d34 | 3316 | for_each_thread (queue_stop_reply_callback); |
bd99dc85 PA |
3317 | |
3318 | /* The first is sent immediatly. OK is sent if there is no | |
3319 | stopped thread, which is the same handling of the vStopped | |
3320 | packet (by design). */ | |
c12a5089 | 3321 | notif_write_event (¬if_stop, cs.own_buf); |
bd99dc85 | 3322 | } |
5b1c542e | 3323 | else |
bd99dc85 | 3324 | { |
9c80ecd6 | 3325 | thread_info *thread = NULL; |
b7ea362b | 3326 | |
7984d532 | 3327 | pause_all (0); |
fa593d66 | 3328 | stabilize_threads (); |
8336d594 PA |
3329 | gdb_wants_all_threads_stopped (); |
3330 | ||
b7ea362b PA |
3331 | /* We can only report one status, but we might be coming out of |
3332 | non-stop -- if more than one thread is stopped with | |
3333 | interesting events, leave events for the threads we're not | |
3334 | reporting now pending. They'll be reported the next time the | |
3335 | threads are resumed. Start by marking all interesting events | |
3336 | as pending. */ | |
f0045347 | 3337 | for_each_thread (set_pending_status_callback); |
b7ea362b PA |
3338 | |
3339 | /* Prefer the last thread that reported an event to GDB (even if | |
3340 | that was a GDB_SIGNAL_TRAP). */ | |
c12a5089 SC |
3341 | if (cs.last_status.kind != TARGET_WAITKIND_IGNORE |
3342 | && cs.last_status.kind != TARGET_WAITKIND_EXITED | |
3343 | && cs.last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
3344 | thread = find_thread_ptid (cs.last_ptid); | |
b7ea362b PA |
3345 | |
3346 | /* If the last event thread is not found for some reason, look | |
3347 | for some other thread that might have an event to report. */ | |
3348 | if (thread == NULL) | |
da4ae14a | 3349 | thread = find_thread ([] (thread_info *thr_arg) |
99078d34 | 3350 | { |
da4ae14a | 3351 | return thr_arg->status_pending_p; |
99078d34 | 3352 | }); |
b7ea362b PA |
3353 | |
3354 | /* If we're still out of luck, simply pick the first thread in | |
3355 | the thread list. */ | |
3356 | if (thread == NULL) | |
9c80ecd6 | 3357 | thread = get_first_thread (); |
b7ea362b PA |
3358 | |
3359 | if (thread != NULL) | |
8336d594 | 3360 | { |
b7ea362b PA |
3361 | struct thread_info *tp = (struct thread_info *) thread; |
3362 | ||
3363 | /* We're reporting this event, so it's no longer | |
3364 | pending. */ | |
3365 | tp->status_pending_p = 0; | |
3366 | ||
3367 | /* GDB assumes the current thread is the thread we're | |
3368 | reporting the status for. */ | |
c12a5089 | 3369 | cs.general_thread = thread->id; |
f557a88a | 3370 | set_desired_thread (); |
8336d594 | 3371 | |
b7ea362b | 3372 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
9c80ecd6 | 3373 | prepare_resume_reply (own_buf, tp->id, &tp->last_status); |
8336d594 | 3374 | } |
bd99dc85 PA |
3375 | else |
3376 | strcpy (own_buf, "W00"); | |
3377 | } | |
5b1c542e PA |
3378 | } |
3379 | ||
dd24457d DJ |
3380 | static void |
3381 | gdbserver_version (void) | |
3382 | { | |
c16158bc | 3383 | printf ("GNU gdbserver %s%s\n" |
5dd8bf88 | 3384 | "Copyright (C) 2020 Free Software Foundation, Inc.\n" |
493e2a69 MS |
3385 | "gdbserver is free software, covered by the " |
3386 | "GNU General Public License.\n" | |
dd24457d | 3387 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 3388 | PKGVERSION, version, host_name); |
dd24457d DJ |
3389 | } |
3390 | ||
0bc68c49 | 3391 | static void |
c16158bc | 3392 | gdbserver_usage (FILE *stream) |
0bc68c49 | 3393 | { |
c16158bc JM |
3394 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
3395 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
3396 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
3397 | "\n" | |
41f98f02 PA |
3398 | "COMM may either be a tty device (for serial debugging),\n" |
3399 | "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n" | |
3400 | "stdin/stdout of gdbserver.\n" | |
3401 | "PROG is the executable program. ARGS are arguments passed to inferior.\n" | |
3402 | "PID is the process ID to attach to, when --attach is specified.\n" | |
3403 | "\n" | |
3404 | "Operating modes:\n" | |
3405 | "\n" | |
3406 | " --attach Attach to running process PID.\n" | |
3407 | " --multi Start server without a specific program, and\n" | |
3408 | " only quit when explicitly commanded.\n" | |
3409 | " --once Exit after the first connection has closed.\n" | |
3410 | " --help Print this message and then exit.\n" | |
3411 | " --version Display version information and exit.\n" | |
3412 | "\n" | |
3413 | "Other options:\n" | |
3414 | "\n" | |
3415 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" | |
3416 | " --disable-randomization\n" | |
3417 | " Run PROG with address space randomization disabled.\n" | |
3418 | " --no-disable-randomization\n" | |
3419 | " Don't disable address space randomization when\n" | |
3420 | " starting PROG.\n" | |
aefd8b33 SDJ |
3421 | " --startup-with-shell\n" |
3422 | " Start PROG using a shell. I.e., execs a shell that\n" | |
3423 | " then execs PROG. (default)\n" | |
3424 | " --no-startup-with-shell\n" | |
3425 | " Exec PROG directly instead of using a shell.\n" | |
3426 | " Disables argument globbing and variable substitution\n" | |
3427 | " on UNIX-like systems.\n" | |
41f98f02 PA |
3428 | "\n" |
3429 | "Debug options:\n" | |
c16158bc | 3430 | "\n" |
62709adf | 3431 | " --debug Enable general debugging output.\n" |
227a9e65 | 3432 | " --debug-format=OPT1[,OPT2,...]\n" |
87ce2a04 DE |
3433 | " Specify extra content in debugging output.\n" |
3434 | " Options:\n" | |
3435 | " all\n" | |
3436 | " none\n" | |
87ce2a04 | 3437 | " timestamp\n" |
62709adf | 3438 | " --remote-debug Enable remote protocol debugging output.\n" |
227a9e65 | 3439 | " --disable-packet=OPT1[,OPT2,...]\n" |
41f98f02 PA |
3440 | " Disable support for RSP packets or features.\n" |
3441 | " Options:\n" | |
3442 | " vCont, Tthread, qC, qfThreadInfo and \n" | |
3443 | " threads (disable all threading packets).\n" | |
3444 | "\n" | |
3445 | "For more information, consult the GDB manual (available as on-line \n" | |
3446 | "info or a printed manual).\n"); | |
c16158bc JM |
3447 | if (REPORT_BUGS_TO[0] && stream == stdout) |
3448 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
3449 | } |
3450 | ||
db42f210 PA |
3451 | static void |
3452 | gdbserver_show_disableable (FILE *stream) | |
3453 | { | |
3454 | fprintf (stream, "Disableable packets:\n" | |
3455 | " vCont \tAll vCont packets\n" | |
3456 | " qC \tQuerying the current thread\n" | |
3457 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
3458 | " Tthread \tPassing the thread specifier in the " |
3459 | "T stop reply packet\n" | |
db42f210 PA |
3460 | " threads \tAll of the above\n"); |
3461 | } | |
3462 | ||
95954743 | 3463 | static void |
9179355e | 3464 | kill_inferior_callback (process_info *process) |
95954743 | 3465 | { |
a780ef4f PA |
3466 | kill_inferior (process); |
3467 | discard_queued_stop_replies (ptid_t (process->pid)); | |
95954743 PA |
3468 | } |
3469 | ||
9f767825 DE |
3470 | /* Call this when exiting gdbserver with possible inferiors that need |
3471 | to be killed or detached from. */ | |
3472 | ||
3473 | static void | |
3474 | detach_or_kill_for_exit (void) | |
3475 | { | |
3476 | /* First print a list of the inferiors we will be killing/detaching. | |
3477 | This is to assist the user, for example, in case the inferior unexpectedly | |
3478 | dies after we exit: did we screw up or did the inferior exit on its own? | |
3479 | Having this info will save some head-scratching. */ | |
3480 | ||
3481 | if (have_started_inferiors_p ()) | |
3482 | { | |
3483 | fprintf (stderr, "Killing process(es):"); | |
9179355e SM |
3484 | |
3485 | for_each_process ([] (process_info *process) { | |
3486 | if (!process->attached) | |
3487 | fprintf (stderr, " %d", process->pid); | |
3488 | }); | |
3489 | ||
9f767825 DE |
3490 | fprintf (stderr, "\n"); |
3491 | } | |
3492 | if (have_attached_inferiors_p ()) | |
3493 | { | |
3494 | fprintf (stderr, "Detaching process(es):"); | |
9179355e SM |
3495 | |
3496 | for_each_process ([] (process_info *process) { | |
3497 | if (process->attached) | |
3498 | fprintf (stderr, " %d", process->pid); | |
3499 | }); | |
3500 | ||
9f767825 DE |
3501 | fprintf (stderr, "\n"); |
3502 | } | |
3503 | ||
3504 | /* Now we can kill or detach the inferiors. */ | |
9179355e SM |
3505 | for_each_process ([] (process_info *process) { |
3506 | int pid = process->pid; | |
3507 | ||
3508 | if (process->attached) | |
ef2ddb33 | 3509 | detach_inferior (process); |
9179355e | 3510 | else |
a780ef4f | 3511 | kill_inferior (process); |
9f767825 | 3512 | |
f2907e49 | 3513 | discard_queued_stop_replies (ptid_t (pid)); |
9179355e | 3514 | }); |
9f767825 DE |
3515 | } |
3516 | ||
860789c7 GB |
3517 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
3518 | static int exit_code; | |
3519 | ||
37991b4f TT |
3520 | /* Wrapper for detach_or_kill_for_exit that catches and prints |
3521 | errors. */ | |
860789c7 GB |
3522 | |
3523 | static void | |
37991b4f | 3524 | detach_or_kill_for_exit_cleanup () |
860789c7 | 3525 | { |
a70b8144 | 3526 | try |
860789c7 GB |
3527 | { |
3528 | detach_or_kill_for_exit (); | |
3529 | } | |
230d2906 | 3530 | catch (const gdb_exception &exception) |
860789c7 GB |
3531 | { |
3532 | fflush (stdout); | |
3d6e9d23 TT |
3533 | fprintf (stderr, "Detach or kill failed: %s\n", |
3534 | exception.what ()); | |
860789c7 GB |
3535 | exit_code = 1; |
3536 | } | |
3537 | } | |
3538 | ||
3539 | /* Main function. This is called by the real "main" function, | |
3540 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3541 | ||
3542 | static void ATTRIBUTE_NORETURN | |
3543 | captured_main (int argc, char *argv[]) | |
c906108c | 3544 | { |
0729219d DJ |
3545 | int bad_attach; |
3546 | int pid; | |
fb32b4f7 PA |
3547 | char *arg_end; |
3548 | const char *port = NULL; | |
2d717e4f | 3549 | char **next_arg = &argv[1]; |
89dc0afd JK |
3550 | volatile int multi_mode = 0; |
3551 | volatile int attach = 0; | |
2d717e4f | 3552 | int was_running; |
6d580b63 | 3553 | bool selftest = false; |
605fd3c6 | 3554 | #if GDB_SELF_TEST |
1526853e | 3555 | const char *selftest_filter = NULL; |
605fd3c6 | 3556 | #endif |
c906108c | 3557 | |
b4987c95 | 3558 | current_directory = getcwd (NULL, 0); |
c12a5089 SC |
3559 | client_state &cs = get_client_state (); |
3560 | ||
b4987c95 SDJ |
3561 | if (current_directory == NULL) |
3562 | { | |
81561546 | 3563 | error (_("Could not find current working directory: %s"), |
b4987c95 SDJ |
3564 | safe_strerror (errno)); |
3565 | } | |
3566 | ||
2d717e4f | 3567 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3568 | { |
2d717e4f DJ |
3569 | if (strcmp (*next_arg, "--version") == 0) |
3570 | { | |
3571 | gdbserver_version (); | |
3572 | exit (0); | |
3573 | } | |
3574 | else if (strcmp (*next_arg, "--help") == 0) | |
3575 | { | |
c16158bc | 3576 | gdbserver_usage (stdout); |
2d717e4f DJ |
3577 | exit (0); |
3578 | } | |
3579 | else if (strcmp (*next_arg, "--attach") == 0) | |
3580 | attach = 1; | |
3581 | else if (strcmp (*next_arg, "--multi") == 0) | |
3582 | multi_mode = 1; | |
ccd213ac DJ |
3583 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3584 | { | |
7c5ded6a SDJ |
3585 | char **tmp; |
3586 | ||
ccd213ac DJ |
3587 | next_arg++; |
3588 | ||
7c5ded6a | 3589 | tmp = next_arg; |
ccd213ac | 3590 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) |
7c5ded6a | 3591 | { |
2090129c SDJ |
3592 | wrapper_argv += *next_arg; |
3593 | wrapper_argv += ' '; | |
7c5ded6a SDJ |
3594 | next_arg++; |
3595 | } | |
ccd213ac | 3596 | |
2090129c SDJ |
3597 | if (!wrapper_argv.empty ()) |
3598 | { | |
3599 | /* Erase the last whitespace. */ | |
3600 | wrapper_argv.erase (wrapper_argv.end () - 1); | |
3601 | } | |
3602 | ||
7c5ded6a | 3603 | if (next_arg == tmp || *next_arg == NULL) |
ccd213ac | 3604 | { |
c16158bc | 3605 | gdbserver_usage (stderr); |
ccd213ac DJ |
3606 | exit (1); |
3607 | } | |
3608 | ||
3609 | /* Consume the "--". */ | |
3610 | *next_arg = NULL; | |
3611 | } | |
2d717e4f DJ |
3612 | else if (strcmp (*next_arg, "--debug") == 0) |
3613 | debug_threads = 1; | |
61012eef | 3614 | else if (startswith (*next_arg, "--debug-format=")) |
87ce2a04 | 3615 | { |
2cc05030 | 3616 | std::string error_msg |
87ce2a04 DE |
3617 | = parse_debug_format_options ((*next_arg) |
3618 | + sizeof ("--debug-format=") - 1, 0); | |
3619 | ||
2cc05030 | 3620 | if (!error_msg.empty ()) |
87ce2a04 | 3621 | { |
2cc05030 | 3622 | fprintf (stderr, "%s", error_msg.c_str ()); |
87ce2a04 DE |
3623 | exit (1); |
3624 | } | |
3625 | } | |
62709adf PA |
3626 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
3627 | remote_debug = 1; | |
aeb2e706 AH |
3628 | else if (startswith (*next_arg, "--debug-file=")) |
3629 | debug_set_output ((*next_arg) + sizeof ("--debug-file=") -1); | |
db42f210 PA |
3630 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3631 | { | |
3632 | gdbserver_show_disableable (stdout); | |
3633 | exit (0); | |
3634 | } | |
61012eef | 3635 | else if (startswith (*next_arg, "--disable-packet=")) |
db42f210 | 3636 | { |
ca3a04f6 CB |
3637 | char *packets = *next_arg += sizeof ("--disable-packet=") - 1; |
3638 | char *saveptr; | |
3639 | for (char *tok = strtok_r (packets, ",", &saveptr); | |
db42f210 | 3640 | tok != NULL; |
ca3a04f6 | 3641 | tok = strtok_r (NULL, ",", &saveptr)) |
db42f210 PA |
3642 | { |
3643 | if (strcmp ("vCont", tok) == 0) | |
3e6ec53a | 3644 | disable_packet_vCont = true; |
db42f210 | 3645 | else if (strcmp ("Tthread", tok) == 0) |
3e6ec53a | 3646 | disable_packet_Tthread = true; |
db42f210 | 3647 | else if (strcmp ("qC", tok) == 0) |
3e6ec53a | 3648 | disable_packet_qC = true; |
db42f210 | 3649 | else if (strcmp ("qfThreadInfo", tok) == 0) |
3e6ec53a | 3650 | disable_packet_qfThreadInfo = true; |
db42f210 PA |
3651 | else if (strcmp ("threads", tok) == 0) |
3652 | { | |
3e6ec53a CB |
3653 | disable_packet_vCont = true; |
3654 | disable_packet_Tthread = true; | |
3655 | disable_packet_qC = true; | |
3656 | disable_packet_qfThreadInfo = true; | |
db42f210 PA |
3657 | } |
3658 | else | |
3659 | { | |
3660 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3661 | tok); | |
3662 | gdbserver_show_disableable (stderr); | |
3663 | exit (1); | |
3664 | } | |
3665 | } | |
3666 | } | |
e0f9f062 DE |
3667 | else if (strcmp (*next_arg, "-") == 0) |
3668 | { | |
3669 | /* "-" specifies a stdio connection and is a form of port | |
3670 | specification. */ | |
fb32b4f7 PA |
3671 | port = STDIO_CONNECTION_NAME; |
3672 | next_arg++; | |
e0f9f062 DE |
3673 | break; |
3674 | } | |
03583c20 | 3675 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
c12a5089 | 3676 | cs.disable_randomization = 1; |
03583c20 | 3677 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) |
c12a5089 | 3678 | cs.disable_randomization = 0; |
aefd8b33 SDJ |
3679 | else if (strcmp (*next_arg, "--startup-with-shell") == 0) |
3680 | startup_with_shell = true; | |
3681 | else if (strcmp (*next_arg, "--no-startup-with-shell") == 0) | |
3682 | startup_with_shell = false; | |
03f2bd59 | 3683 | else if (strcmp (*next_arg, "--once") == 0) |
3e6ec53a | 3684 | run_once = true; |
6d580b63 YQ |
3685 | else if (strcmp (*next_arg, "--selftest") == 0) |
3686 | selftest = true; | |
1526853e SM |
3687 | else if (startswith (*next_arg, "--selftest=")) |
3688 | { | |
3689 | selftest = true; | |
605fd3c6 | 3690 | #if GDB_SELF_TEST |
1526853e | 3691 | selftest_filter = *next_arg + strlen ("--selftest="); |
605fd3c6 | 3692 | #endif |
1526853e | 3693 | } |
2d717e4f DJ |
3694 | else |
3695 | { | |
3696 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3697 | exit (1); | |
3698 | } | |
dd24457d | 3699 | |
2d717e4f DJ |
3700 | next_arg++; |
3701 | continue; | |
dd24457d DJ |
3702 | } |
3703 | ||
fb32b4f7 PA |
3704 | if (port == NULL) |
3705 | { | |
3706 | port = *next_arg; | |
3707 | next_arg++; | |
3708 | } | |
6d580b63 YQ |
3709 | if ((port == NULL || (!attach && !multi_mode && *next_arg == NULL)) |
3710 | && !selftest) | |
2d717e4f | 3711 | { |
c16158bc | 3712 | gdbserver_usage (stderr); |
2d717e4f DJ |
3713 | exit (1); |
3714 | } | |
3715 | ||
602e3198 JK |
3716 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3717 | opened by remote_prepare. */ | |
3718 | notice_open_fds (); | |
3719 | ||
e379cee6 | 3720 | save_original_signals_state (false); |
f348d89a | 3721 | |
e0f9f062 DE |
3722 | /* We need to know whether the remote connection is stdio before |
3723 | starting the inferior. Inferiors created in this scenario have | |
3724 | stdin,stdout redirected. So do this here before we call | |
3725 | start_inferior. */ | |
6d580b63 YQ |
3726 | if (port != NULL) |
3727 | remote_prepare (port); | |
e0f9f062 | 3728 | |
0729219d DJ |
3729 | bad_attach = 0; |
3730 | pid = 0; | |
2d717e4f DJ |
3731 | |
3732 | /* --attach used to come after PORT, so allow it there for | |
3733 | compatibility. */ | |
3734 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3735 | { |
2d717e4f DJ |
3736 | attach = 1; |
3737 | next_arg++; | |
45b7b345 DJ |
3738 | } |
3739 | ||
2d717e4f DJ |
3740 | if (attach |
3741 | && (*next_arg == NULL | |
3742 | || (*next_arg)[0] == '\0' | |
3743 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3744 | || *arg_end != '\0' | |
3745 | || next_arg[1] != NULL)) | |
3746 | bad_attach = 1; | |
3747 | ||
3748 | if (bad_attach) | |
dd24457d | 3749 | { |
c16158bc | 3750 | gdbserver_usage (stderr); |
dd24457d DJ |
3751 | exit (1); |
3752 | } | |
c906108c | 3753 | |
2090129c | 3754 | /* Gather information about the environment. */ |
9a6c7d9c | 3755 | our_environ = gdb_environ::from_host_environ (); |
2090129c | 3756 | |
a20d5e98 | 3757 | initialize_async_io (); |
4ce44c66 | 3758 | initialize_low (); |
2090129c | 3759 | have_job_control (); |
60f662b0 | 3760 | initialize_event_loop (); |
219f2f23 PA |
3761 | if (target_supports_tracepoints ()) |
3762 | initialize_tracepoint (); | |
4ce44c66 | 3763 | |
224c3ddb | 3764 | mem_buf = (unsigned char *) xmalloc (PBUFSIZ); |
0a30fbc4 | 3765 | |
6d580b63 YQ |
3766 | if (selftest) |
3767 | { | |
605fd3c6 | 3768 | #if GDB_SELF_TEST |
1526853e | 3769 | selftests::run_tests (selftest_filter); |
605fd3c6 | 3770 | #else |
8ecfd7bd | 3771 | printf (_("Selftests have been disabled for this build.\n")); |
605fd3c6 | 3772 | #endif |
6d580b63 YQ |
3773 | throw_quit ("Quit"); |
3774 | } | |
3775 | ||
2d717e4f | 3776 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3777 | { |
2d717e4f DJ |
3778 | int i, n; |
3779 | ||
3780 | n = argc - (next_arg - argv); | |
b02f78f9 | 3781 | program_path.set (make_unique_xstrdup (next_arg[0])); |
2090129c SDJ |
3782 | for (i = 1; i < n; i++) |
3783 | program_args.push_back (xstrdup (next_arg[i])); | |
3784 | program_args.push_back (NULL); | |
2d717e4f | 3785 | |
45b7b345 | 3786 | /* Wait till we are at first instruction in program. */ |
25e3c82c | 3787 | create_inferior (program_path.get (), program_args); |
c906108c | 3788 | |
c588c53c MS |
3789 | /* We are now (hopefully) stopped at the first instruction of |
3790 | the target process. This assumes that the target process was | |
3791 | successfully created. */ | |
45b7b345 | 3792 | } |
2d717e4f DJ |
3793 | else if (pid != 0) |
3794 | { | |
5b1c542e | 3795 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3796 | error ("Attaching not supported on this target"); |
3797 | ||
3798 | /* Otherwise succeeded. */ | |
3799 | } | |
45b7b345 DJ |
3800 | else |
3801 | { | |
c12a5089 SC |
3802 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
3803 | cs.last_status.value.integer = 0; | |
3804 | cs.last_ptid = minus_one_ptid; | |
45b7b345 | 3805 | } |
37991b4f TT |
3806 | |
3807 | SCOPE_EXIT { detach_or_kill_for_exit_cleanup (); }; | |
c906108c | 3808 | |
311de423 PA |
3809 | /* Don't report shared library events on the initial connection, |
3810 | even if some libraries are preloaded. Avoids the "stopped by | |
3811 | shared library event" notice on gdb side. */ | |
3812 | dlls_changed = 0; | |
3813 | ||
c12a5089 SC |
3814 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
3815 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3816 | was_running = 0; |
3817 | else | |
3818 | was_running = 1; | |
3819 | ||
3820 | if (!was_running && !multi_mode) | |
860789c7 | 3821 | error ("No program to debug"); |
c588c53c | 3822 | |
c906108c SS |
3823 | while (1) |
3824 | { | |
c12a5089 SC |
3825 | cs.noack_mode = 0; |
3826 | cs.multi_process = 0; | |
3827 | cs.report_fork_events = 0; | |
3828 | cs.report_vfork_events = 0; | |
3829 | cs.report_exec_events = 0; | |
8336d594 | 3830 | /* Be sure we're out of tfind mode. */ |
c12a5089 SC |
3831 | cs.current_traceframe = -1; |
3832 | cs.cont_thread = null_ptid; | |
3833 | cs.swbreak_feature = 0; | |
3834 | cs.hwbreak_feature = 0; | |
3835 | cs.vCont_supported = 0; | |
bd99dc85 | 3836 | |
2d717e4f | 3837 | remote_open (port); |
c906108c | 3838 | |
a70b8144 | 3839 | try |
2d717e4f | 3840 | { |
860789c7 GB |
3841 | /* Wait for events. This will return when all event sources |
3842 | are removed from the event loop. */ | |
3843 | start_event_loop (); | |
2d717e4f | 3844 | |
860789c7 | 3845 | /* If an exit was requested (using the "monitor exit" |
fddedbe6 PA |
3846 | command), terminate now. */ |
3847 | if (exit_requested) | |
3848 | throw_quit ("Quit"); | |
3849 | ||
3850 | /* The only other way to get here is for getpkt to fail: | |
3851 | ||
3852 | - If --once was specified, we're done. | |
bd99dc85 | 3853 | |
fddedbe6 PA |
3854 | - If not in extended-remote mode, and we're no longer |
3855 | debugging anything, simply exit: GDB has disconnected | |
3856 | after processing the last process exit. | |
3857 | ||
3858 | - Otherwise, close the connection and reopen it at the | |
3859 | top of the loop. */ | |
3860 | if (run_once || (!extended_protocol && !target_running ())) | |
860789c7 | 3861 | throw_quit ("Quit"); |
bd99dc85 | 3862 | |
860789c7 GB |
3863 | fprintf (stderr, |
3864 | "Remote side has terminated connection. " | |
3865 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3866 | |
860789c7 GB |
3867 | /* Get rid of any pending statuses. An eventual reconnection |
3868 | (by the same GDB instance or another) will refresh all its | |
3869 | state from scratch. */ | |
465a859e | 3870 | discard_queued_stop_replies (minus_one_ptid); |
f0045347 SM |
3871 | for_each_thread ([] (thread_info *thread) |
3872 | { | |
3873 | thread->status_pending_p = 0; | |
3874 | }); | |
9939e131 | 3875 | |
860789c7 | 3876 | if (tracing) |
8336d594 | 3877 | { |
860789c7 | 3878 | if (disconnected_tracing) |
8336d594 | 3879 | { |
860789c7 GB |
3880 | /* Try to enable non-stop/async mode, so we we can |
3881 | both wait for an async socket accept, and handle | |
3882 | async target events simultaneously. There's also | |
3883 | no point either in having the target always stop | |
3884 | all threads, when we're going to pass signals | |
3885 | down without informing GDB. */ | |
3886 | if (!non_stop) | |
3887 | { | |
3888 | if (start_non_stop (1)) | |
3889 | non_stop = 1; | |
3890 | ||
3891 | /* Detaching implicitly resumes all threads; | |
3892 | simply disconnecting does not. */ | |
3893 | } | |
3894 | } | |
3895 | else | |
3896 | { | |
3897 | fprintf (stderr, | |
3898 | "Disconnected tracing disabled; " | |
3899 | "stopping trace run.\n"); | |
3900 | stop_tracing (); | |
8336d594 PA |
3901 | } |
3902 | } | |
860789c7 | 3903 | } |
230d2906 | 3904 | catch (const gdb_exception_error &exception) |
860789c7 | 3905 | { |
608a1e46 | 3906 | fflush (stdout); |
3d6e9d23 | 3907 | fprintf (stderr, "gdbserver: %s\n", exception.what ()); |
608a1e46 | 3908 | |
860789c7 | 3909 | if (response_needed) |
8336d594 | 3910 | { |
c12a5089 SC |
3911 | write_enn (cs.own_buf); |
3912 | putpkt (cs.own_buf); | |
8336d594 | 3913 | } |
608a1e46 PA |
3914 | |
3915 | if (run_once) | |
3916 | throw_quit ("Quit"); | |
8336d594 | 3917 | } |
bd99dc85 PA |
3918 | } |
3919 | } | |
01f9e8fa | 3920 | |
860789c7 GB |
3921 | /* Main function. */ |
3922 | ||
3923 | int | |
3924 | main (int argc, char *argv[]) | |
3925 | { | |
860789c7 | 3926 | |
a70b8144 | 3927 | try |
860789c7 GB |
3928 | { |
3929 | captured_main (argc, argv); | |
3930 | } | |
230d2906 | 3931 | catch (const gdb_exception &exception) |
860789c7 | 3932 | { |
492d29ea PA |
3933 | if (exception.reason == RETURN_ERROR) |
3934 | { | |
3935 | fflush (stdout); | |
3d6e9d23 | 3936 | fprintf (stderr, "%s\n", exception.what ()); |
492d29ea PA |
3937 | fprintf (stderr, "Exiting\n"); |
3938 | exit_code = 1; | |
3939 | } | |
3940 | ||
3941 | exit (exit_code); | |
860789c7 GB |
3942 | } |
3943 | ||
492d29ea | 3944 | gdb_assert_not_reached ("captured_main should never return"); |
860789c7 GB |
3945 | } |
3946 | ||
802e8e6d PA |
3947 | /* Process options coming from Z packets for a breakpoint. PACKET is |
3948 | the packet buffer. *PACKET is updated to point to the first char | |
3949 | after the last processed option. */ | |
9f3a5c85 LM |
3950 | |
3951 | static void | |
256642e8 | 3952 | process_point_options (struct gdb_breakpoint *bp, const char **packet) |
9f3a5c85 | 3953 | { |
256642e8 | 3954 | const char *dataptr = *packet; |
d3ce09f5 | 3955 | int persist; |
9f3a5c85 LM |
3956 | |
3957 | /* Check if data has the correct format. */ | |
3958 | if (*dataptr != ';') | |
3959 | return; | |
3960 | ||
3961 | dataptr++; | |
3962 | ||
3963 | while (*dataptr) | |
3964 | { | |
d3ce09f5 SS |
3965 | if (*dataptr == ';') |
3966 | ++dataptr; | |
3967 | ||
3968 | if (*dataptr == 'X') | |
9f3a5c85 | 3969 | { |
d3ce09f5 | 3970 | /* Conditional expression. */ |
d171ca78 | 3971 | if (debug_threads) |
87ce2a04 | 3972 | debug_printf ("Found breakpoint condition.\n"); |
802e8e6d | 3973 | if (!add_breakpoint_condition (bp, &dataptr)) |
8424cc97 | 3974 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 | 3975 | } |
61012eef | 3976 | else if (startswith (dataptr, "cmds:")) |
d3ce09f5 SS |
3977 | { |
3978 | dataptr += strlen ("cmds:"); | |
3979 | if (debug_threads) | |
87ce2a04 | 3980 | debug_printf ("Found breakpoint commands %s.\n", dataptr); |
d3ce09f5 SS |
3981 | persist = (*dataptr == '1'); |
3982 | dataptr += 2; | |
802e8e6d | 3983 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
8424cc97 | 3984 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 SS |
3985 | } |
3986 | else | |
3987 | { | |
d3ce09f5 SS |
3988 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
3989 | *dataptr); | |
78a99e91 | 3990 | /* Skip tokens until we find one that we recognize. */ |
8424cc97 | 3991 | dataptr = strchrnul (dataptr, ';'); |
9f3a5c85 | 3992 | } |
9f3a5c85 LM |
3993 | } |
3994 | *packet = dataptr; | |
3995 | } | |
3996 | ||
bd99dc85 PA |
3997 | /* Event loop callback that handles a serial event. The first byte in |
3998 | the serial buffer gets us here. We expect characters to arrive at | |
3999 | a brisk pace, so we read the rest of the packet with a blocking | |
4000 | getpkt call. */ | |
01f9e8fa | 4001 | |
8336d594 | 4002 | static int |
bd99dc85 PA |
4003 | process_serial_event (void) |
4004 | { | |
c12a5089 | 4005 | client_state &cs = get_client_state (); |
bd99dc85 PA |
4006 | int signal; |
4007 | unsigned int len; | |
4008 | CORE_ADDR mem_addr; | |
4009 | unsigned char sig; | |
4010 | int packet_len; | |
4011 | int new_packet_len = -1; | |
4012 | ||
bd99dc85 PA |
4013 | disable_async_io (); |
4014 | ||
3e6ec53a | 4015 | response_needed = false; |
c12a5089 | 4016 | packet_len = getpkt (cs.own_buf); |
bd99dc85 PA |
4017 | if (packet_len <= 0) |
4018 | { | |
bd99dc85 | 4019 | remote_close (); |
8336d594 PA |
4020 | /* Force an event loop break. */ |
4021 | return -1; | |
bd99dc85 | 4022 | } |
3e6ec53a | 4023 | response_needed = true; |
bd99dc85 | 4024 | |
c12a5089 | 4025 | char ch = cs.own_buf[0]; |
bd99dc85 PA |
4026 | switch (ch) |
4027 | { | |
4028 | case 'q': | |
c12a5089 | 4029 | handle_query (cs.own_buf, packet_len, &new_packet_len); |
bd99dc85 PA |
4030 | break; |
4031 | case 'Q': | |
c12a5089 | 4032 | handle_general_set (cs.own_buf); |
bd99dc85 PA |
4033 | break; |
4034 | case 'D': | |
c12a5089 | 4035 | handle_detach (cs.own_buf); |
bd99dc85 PA |
4036 | break; |
4037 | case '!': | |
3e6ec53a | 4038 | extended_protocol = true; |
c12a5089 | 4039 | write_ok (cs.own_buf); |
bd99dc85 PA |
4040 | break; |
4041 | case '?': | |
c12a5089 | 4042 | handle_status (cs.own_buf); |
bd99dc85 PA |
4043 | break; |
4044 | case 'H': | |
c12a5089 | 4045 | if (cs.own_buf[1] == 'c' || cs.own_buf[1] == 'g' || cs.own_buf[1] == 's') |
bd99dc85 | 4046 | { |
c12a5089 | 4047 | require_running_or_break (cs.own_buf); |
95954743 | 4048 | |
c12a5089 | 4049 | ptid_t thread_id = read_ptid (&cs.own_buf[2], NULL); |
95954743 | 4050 | |
96cde54f | 4051 | if (thread_id == null_ptid || thread_id == minus_one_ptid) |
95954743 | 4052 | thread_id = null_ptid; |
96cde54f | 4053 | else if (thread_id.is_pid ()) |
95954743 | 4054 | { |
96cde54f SM |
4055 | /* The ptid represents a pid. */ |
4056 | thread_info *thread = find_any_thread_of_pid (thread_id.pid ()); | |
785922a5 SM |
4057 | |
4058 | if (thread == NULL) | |
95954743 | 4059 | { |
c12a5089 | 4060 | write_enn (cs.own_buf); |
95954743 PA |
4061 | break; |
4062 | } | |
4063 | ||
9c80ecd6 | 4064 | thread_id = thread->id; |
95954743 | 4065 | } |
bd99dc85 PA |
4066 | else |
4067 | { | |
96cde54f SM |
4068 | /* The ptid represents a lwp/tid. */ |
4069 | if (find_thread_ptid (thread_id) == NULL) | |
c906108c | 4070 | { |
c12a5089 | 4071 | write_enn (cs.own_buf); |
c906108c SS |
4072 | break; |
4073 | } | |
c906108c SS |
4074 | } |
4075 | ||
c12a5089 | 4076 | if (cs.own_buf[1] == 'g') |
c906108c | 4077 | { |
d7e15655 | 4078 | if (thread_id == null_ptid) |
c906108c | 4079 | { |
bd99dc85 PA |
4080 | /* GDB is telling us to choose any thread. Check if |
4081 | the currently selected thread is still valid. If | |
4082 | it is not, select the first available. */ | |
c12a5089 | 4083 | thread_info *thread = find_thread_ptid (cs.general_thread); |
bd99dc85 | 4084 | if (thread == NULL) |
f0db101d | 4085 | thread = get_first_thread (); |
9c80ecd6 | 4086 | thread_id = thread->id; |
c906108c | 4087 | } |
bd99dc85 | 4088 | |
c12a5089 | 4089 | cs.general_thread = thread_id; |
f557a88a | 4090 | set_desired_thread (); |
f0db101d | 4091 | gdb_assert (current_thread != NULL); |
c906108c | 4092 | } |
c12a5089 SC |
4093 | else if (cs.own_buf[1] == 'c') |
4094 | cs.cont_thread = thread_id; | |
c906108c | 4095 | |
c12a5089 | 4096 | write_ok (cs.own_buf); |
bd99dc85 PA |
4097 | } |
4098 | else | |
4099 | { | |
4100 | /* Silently ignore it so that gdb can extend the protocol | |
4101 | without compatibility headaches. */ | |
c12a5089 | 4102 | cs.own_buf[0] = '\0'; |
2d717e4f | 4103 | } |
bd99dc85 PA |
4104 | break; |
4105 | case 'g': | |
c12a5089 SC |
4106 | require_running_or_break (cs.own_buf); |
4107 | if (cs.current_traceframe >= 0) | |
219f2f23 | 4108 | { |
3aee8918 PA |
4109 | struct regcache *regcache |
4110 | = new_register_cache (current_target_desc ()); | |
219f2f23 | 4111 | |
c12a5089 | 4112 | if (fetch_traceframe_registers (cs.current_traceframe, |
219f2f23 | 4113 | regcache, -1) == 0) |
c12a5089 | 4114 | registers_to_string (regcache, cs.own_buf); |
219f2f23 | 4115 | else |
c12a5089 | 4116 | write_enn (cs.own_buf); |
219f2f23 PA |
4117 | free_register_cache (regcache); |
4118 | } | |
4119 | else | |
4120 | { | |
4121 | struct regcache *regcache; | |
4122 | ||
f557a88a | 4123 | if (!set_desired_thread ()) |
c12a5089 | 4124 | write_enn (cs.own_buf); |
f0db101d PA |
4125 | else |
4126 | { | |
4127 | regcache = get_thread_regcache (current_thread, 1); | |
c12a5089 | 4128 | registers_to_string (regcache, cs.own_buf); |
f0db101d | 4129 | } |
219f2f23 | 4130 | } |
bd99dc85 PA |
4131 | break; |
4132 | case 'G': | |
c12a5089 SC |
4133 | require_running_or_break (cs.own_buf); |
4134 | if (cs.current_traceframe >= 0) | |
4135 | write_enn (cs.own_buf); | |
219f2f23 PA |
4136 | else |
4137 | { | |
442ea881 PA |
4138 | struct regcache *regcache; |
4139 | ||
f557a88a | 4140 | if (!set_desired_thread ()) |
c12a5089 | 4141 | write_enn (cs.own_buf); |
f0db101d PA |
4142 | else |
4143 | { | |
4144 | regcache = get_thread_regcache (current_thread, 1); | |
c12a5089 SC |
4145 | registers_from_string (regcache, &cs.own_buf[1]); |
4146 | write_ok (cs.own_buf); | |
f0db101d | 4147 | } |
442ea881 | 4148 | } |
bd99dc85 PA |
4149 | break; |
4150 | case 'm': | |
da4ae14a TT |
4151 | { |
4152 | require_running_or_break (cs.own_buf); | |
4153 | decode_m_packet (&cs.own_buf[1], &mem_addr, &len); | |
4154 | int res = gdb_read_memory (mem_addr, mem_buf, len); | |
4155 | if (res < 0) | |
4156 | write_enn (cs.own_buf); | |
4157 | else | |
4158 | bin2hex (mem_buf, cs.own_buf, res); | |
4159 | } | |
bd99dc85 PA |
4160 | break; |
4161 | case 'M': | |
c12a5089 SC |
4162 | require_running_or_break (cs.own_buf); |
4163 | decode_M_packet (&cs.own_buf[1], &mem_addr, &len, &mem_buf); | |
90d74c30 | 4164 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
c12a5089 | 4165 | write_ok (cs.own_buf); |
bd99dc85 | 4166 | else |
c12a5089 | 4167 | write_enn (cs.own_buf); |
bd99dc85 PA |
4168 | break; |
4169 | case 'X': | |
c12a5089 SC |
4170 | require_running_or_break (cs.own_buf); |
4171 | if (decode_X_packet (&cs.own_buf[1], packet_len - 1, | |
fa593d66 | 4172 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 4173 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
c12a5089 | 4174 | write_enn (cs.own_buf); |
bd99dc85 | 4175 | else |
c12a5089 | 4176 | write_ok (cs.own_buf); |
bd99dc85 PA |
4177 | break; |
4178 | case 'C': | |
c12a5089 SC |
4179 | require_running_or_break (cs.own_buf); |
4180 | hex2bin (cs.own_buf + 1, &sig, 1); | |
e053fbc4 PA |
4181 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4182 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4183 | else |
4184 | signal = 0; | |
c12a5089 | 4185 | myresume (cs.own_buf, 0, signal); |
bd99dc85 PA |
4186 | break; |
4187 | case 'S': | |
c12a5089 SC |
4188 | require_running_or_break (cs.own_buf); |
4189 | hex2bin (cs.own_buf + 1, &sig, 1); | |
e053fbc4 PA |
4190 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4191 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4192 | else |
4193 | signal = 0; | |
c12a5089 | 4194 | myresume (cs.own_buf, 1, signal); |
bd99dc85 PA |
4195 | break; |
4196 | case 'c': | |
c12a5089 | 4197 | require_running_or_break (cs.own_buf); |
bd99dc85 | 4198 | signal = 0; |
c12a5089 | 4199 | myresume (cs.own_buf, 0, signal); |
bd99dc85 PA |
4200 | break; |
4201 | case 's': | |
c12a5089 | 4202 | require_running_or_break (cs.own_buf); |
bd99dc85 | 4203 | signal = 0; |
c12a5089 | 4204 | myresume (cs.own_buf, 1, signal); |
bd99dc85 | 4205 | break; |
c6314022 AR |
4206 | case 'Z': /* insert_ ... */ |
4207 | /* Fallthrough. */ | |
4208 | case 'z': /* remove_ ... */ | |
bd99dc85 | 4209 | { |
bd99dc85 | 4210 | char *dataptr; |
aca22551 | 4211 | ULONGEST addr; |
27165294 | 4212 | int kind; |
c12a5089 | 4213 | char type = cs.own_buf[1]; |
c6314022 | 4214 | int res; |
d993e290 | 4215 | const int insert = ch == 'Z'; |
c12a5089 | 4216 | const char *p = &cs.own_buf[3]; |
aca22551 PA |
4217 | |
4218 | p = unpack_varlen_hex (p, &addr); | |
27165294 | 4219 | kind = strtol (p + 1, &dataptr, 16); |
c6314022 | 4220 | |
802e8e6d | 4221 | if (insert) |
d993e290 | 4222 | { |
9aa76cd0 | 4223 | struct gdb_breakpoint *bp; |
802e8e6d | 4224 | |
27165294 | 4225 | bp = set_gdb_breakpoint (type, addr, kind, &res); |
802e8e6d | 4226 | if (bp != NULL) |
9f3a5c85 | 4227 | { |
802e8e6d PA |
4228 | res = 0; |
4229 | ||
4230 | /* GDB may have sent us a list of *point parameters to | |
4231 | be evaluated on the target's side. Read such list | |
4232 | here. If we already have a list of parameters, GDB | |
4233 | is telling us to drop that list and use this one | |
4234 | instead. */ | |
0a261ed8 | 4235 | clear_breakpoint_conditions_and_commands (bp); |
256642e8 PA |
4236 | const char *options = dataptr; |
4237 | process_point_options (bp, &options); | |
9f3a5c85 | 4238 | } |
d993e290 | 4239 | } |
802e8e6d | 4240 | else |
27165294 | 4241 | res = delete_gdb_breakpoint (type, addr, kind); |
bd99dc85 | 4242 | |
c6314022 | 4243 | if (res == 0) |
c12a5089 | 4244 | write_ok (cs.own_buf); |
c6314022 AR |
4245 | else if (res == 1) |
4246 | /* Unsupported. */ | |
c12a5089 | 4247 | cs.own_buf[0] = '\0'; |
bd99dc85 | 4248 | else |
c12a5089 | 4249 | write_enn (cs.own_buf); |
bd99dc85 PA |
4250 | break; |
4251 | } | |
4252 | case 'k': | |
3e6ec53a | 4253 | response_needed = false; |
bd99dc85 | 4254 | if (!target_running ()) |
95954743 PA |
4255 | /* The packet we received doesn't make sense - but we can't |
4256 | reply to it, either. */ | |
8336d594 | 4257 | return 0; |
c906108c | 4258 | |
95954743 | 4259 | fprintf (stderr, "Killing all inferiors\n"); |
9179355e SM |
4260 | |
4261 | for_each_process (kill_inferior_callback); | |
c906108c | 4262 | |
bd99dc85 PA |
4263 | /* When using the extended protocol, we wait with no program |
4264 | running. The traditional protocol will exit instead. */ | |
4265 | if (extended_protocol) | |
4266 | { | |
c12a5089 SC |
4267 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
4268 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
8336d594 | 4269 | return 0; |
bd99dc85 PA |
4270 | } |
4271 | else | |
8336d594 PA |
4272 | exit (0); |
4273 | ||
bd99dc85 PA |
4274 | case 'T': |
4275 | { | |
c12a5089 | 4276 | require_running_or_break (cs.own_buf); |
95954743 | 4277 | |
c12a5089 | 4278 | ptid_t thread_id = read_ptid (&cs.own_buf[1], NULL); |
96cde54f | 4279 | if (find_thread_ptid (thread_id) == NULL) |
bd99dc85 | 4280 | { |
c12a5089 | 4281 | write_enn (cs.own_buf); |
bd99dc85 PA |
4282 | break; |
4283 | } | |
4284 | ||
4285 | if (mythread_alive (thread_id)) | |
c12a5089 | 4286 | write_ok (cs.own_buf); |
bd99dc85 | 4287 | else |
c12a5089 | 4288 | write_enn (cs.own_buf); |
bd99dc85 PA |
4289 | } |
4290 | break; | |
4291 | case 'R': | |
3e6ec53a | 4292 | response_needed = false; |
bd99dc85 PA |
4293 | |
4294 | /* Restarting the inferior is only supported in the extended | |
4295 | protocol. */ | |
4296 | if (extended_protocol) | |
4297 | { | |
4298 | if (target_running ()) | |
9179355e SM |
4299 | for_each_process (kill_inferior_callback); |
4300 | ||
bd99dc85 PA |
4301 | fprintf (stderr, "GDBserver restarting\n"); |
4302 | ||
4303 | /* Wait till we are at 1st instruction in prog. */ | |
25e3c82c | 4304 | if (program_path.get () != NULL) |
51aee833 | 4305 | { |
25e3c82c | 4306 | create_inferior (program_path.get (), program_args); |
2090129c | 4307 | |
c12a5089 | 4308 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
51aee833 YQ |
4309 | { |
4310 | /* Stopped at the first instruction of the target | |
4311 | process. */ | |
c12a5089 | 4312 | cs.general_thread = cs.last_ptid; |
51aee833 YQ |
4313 | } |
4314 | else | |
4315 | { | |
4316 | /* Something went wrong. */ | |
c12a5089 | 4317 | cs.general_thread = null_ptid; |
51aee833 YQ |
4318 | } |
4319 | } | |
bd99dc85 PA |
4320 | else |
4321 | { | |
c12a5089 SC |
4322 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
4323 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
bd99dc85 | 4324 | } |
8336d594 | 4325 | return 0; |
c906108c SS |
4326 | } |
4327 | else | |
4328 | { | |
bd99dc85 PA |
4329 | /* It is a request we don't understand. Respond with an |
4330 | empty packet so that gdb knows that we don't support this | |
4331 | request. */ | |
c12a5089 | 4332 | cs.own_buf[0] = '\0'; |
bd99dc85 PA |
4333 | break; |
4334 | } | |
4335 | case 'v': | |
4336 | /* Extended (long) request. */ | |
c12a5089 | 4337 | handle_v_requests (cs.own_buf, packet_len, &new_packet_len); |
bd99dc85 PA |
4338 | break; |
4339 | ||
4340 | default: | |
4341 | /* It is a request we don't understand. Respond with an empty | |
4342 | packet so that gdb knows that we don't support this | |
4343 | request. */ | |
c12a5089 | 4344 | cs.own_buf[0] = '\0'; |
bd99dc85 PA |
4345 | break; |
4346 | } | |
4347 | ||
4348 | if (new_packet_len != -1) | |
c12a5089 | 4349 | putpkt_binary (cs.own_buf, new_packet_len); |
bd99dc85 | 4350 | else |
c12a5089 | 4351 | putpkt (cs.own_buf); |
bd99dc85 | 4352 | |
3e6ec53a | 4353 | response_needed = false; |
bd99dc85 | 4354 | |
8336d594 PA |
4355 | if (exit_requested) |
4356 | return -1; | |
4357 | ||
4358 | return 0; | |
c906108c | 4359 | } |
bd99dc85 PA |
4360 | |
4361 | /* Event-loop callback for serial events. */ | |
4362 | ||
8336d594 | 4363 | int |
bd99dc85 PA |
4364 | handle_serial_event (int err, gdb_client_data client_data) |
4365 | { | |
4366 | if (debug_threads) | |
87ce2a04 | 4367 | debug_printf ("handling possible serial event\n"); |
bd99dc85 PA |
4368 | |
4369 | /* Really handle it. */ | |
8336d594 PA |
4370 | if (process_serial_event () < 0) |
4371 | return -1; | |
bd99dc85 | 4372 | |
0bfdf32f | 4373 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4374 | Important in the non-stop mode asynchronous protocol. */ |
f557a88a | 4375 | set_desired_thread (); |
8336d594 PA |
4376 | |
4377 | return 0; | |
bd99dc85 PA |
4378 | } |
4379 | ||
f2faf941 PA |
4380 | /* Push a stop notification on the notification queue. */ |
4381 | ||
4382 | static void | |
4383 | push_stop_notification (ptid_t ptid, struct target_waitstatus *status) | |
4384 | { | |
b494cdff | 4385 | struct vstop_notif *vstop_notif = new struct vstop_notif; |
f2faf941 PA |
4386 | |
4387 | vstop_notif->status = *status; | |
4388 | vstop_notif->ptid = ptid; | |
4389 | /* Push Stop notification. */ | |
b494cdff | 4390 | notif_push (¬if_stop, vstop_notif); |
f2faf941 PA |
4391 | } |
4392 | ||
bd99dc85 PA |
4393 | /* Event-loop callback for target events. */ |
4394 | ||
8336d594 | 4395 | int |
bd99dc85 PA |
4396 | handle_target_event (int err, gdb_client_data client_data) |
4397 | { | |
c12a5089 | 4398 | client_state &cs = get_client_state (); |
bd99dc85 | 4399 | if (debug_threads) |
87ce2a04 | 4400 | debug_printf ("handling possible target event\n"); |
bd99dc85 | 4401 | |
c12a5089 | 4402 | cs.last_ptid = mywait (minus_one_ptid, &cs.last_status, |
95954743 | 4403 | TARGET_WNOHANG, 1); |
bd99dc85 | 4404 | |
c12a5089 | 4405 | if (cs.last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
fa96cb38 | 4406 | { |
f2faf941 | 4407 | if (gdb_connected () && report_no_resumed) |
c12a5089 | 4408 | push_stop_notification (null_ptid, &cs.last_status); |
fa96cb38 | 4409 | } |
c12a5089 | 4410 | else if (cs.last_status.kind != TARGET_WAITKIND_IGNORE) |
bd99dc85 | 4411 | { |
e99b03dc | 4412 | int pid = cs.last_ptid.pid (); |
8336d594 PA |
4413 | struct process_info *process = find_process_pid (pid); |
4414 | int forward_event = !gdb_connected () || process->gdb_detached; | |
4415 | ||
c12a5089 SC |
4416 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
4417 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
4418 | { |
4419 | mark_breakpoints_out (process); | |
c12a5089 | 4420 | target_mourn_inferior (cs.last_ptid); |
f9e39928 | 4421 | } |
c12a5089 | 4422 | else if (cs.last_status.kind == TARGET_WAITKIND_THREAD_EXITED) |
65706a29 | 4423 | ; |
ce1a5b52 | 4424 | else |
d20a8ad9 PA |
4425 | { |
4426 | /* We're reporting this thread as stopped. Update its | |
4427 | "want-stopped" state to what the client wants, until it | |
4428 | gets a new resume action. */ | |
0bfdf32f | 4429 | current_thread->last_resume_kind = resume_stop; |
c12a5089 | 4430 | current_thread->last_status = cs.last_status; |
d20a8ad9 | 4431 | } |
8336d594 PA |
4432 | |
4433 | if (forward_event) | |
4434 | { | |
4435 | if (!target_running ()) | |
4436 | { | |
4437 | /* The last process exited. We're done. */ | |
4438 | exit (0); | |
4439 | } | |
4440 | ||
c12a5089 SC |
4441 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
4442 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED | |
4443 | || cs.last_status.kind == TARGET_WAITKIND_THREAD_EXITED) | |
65706a29 PA |
4444 | ; |
4445 | else | |
8336d594 PA |
4446 | { |
4447 | /* A thread stopped with a signal, but gdb isn't | |
4448 | connected to handle it. Pass it down to the | |
4449 | inferior, as if it wasn't being traced. */ | |
049a8570 | 4450 | enum gdb_signal signal; |
8336d594 PA |
4451 | |
4452 | if (debug_threads) | |
87ce2a04 DE |
4453 | debug_printf ("GDB not connected; forwarding event %d for" |
4454 | " [%s]\n", | |
c12a5089 SC |
4455 | (int) cs.last_status.kind, |
4456 | target_pid_to_str (cs.last_ptid)); | |
8336d594 | 4457 | |
c12a5089 SC |
4458 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
4459 | signal = cs.last_status.value.sig; | |
65706a29 | 4460 | else |
049a8570 | 4461 | signal = GDB_SIGNAL_0; |
c12a5089 | 4462 | target_continue (cs.last_ptid, signal); |
8336d594 | 4463 | } |
8336d594 PA |
4464 | } |
4465 | else | |
c12a5089 | 4466 | push_stop_notification (cs.last_ptid, &cs.last_status); |
bd99dc85 PA |
4467 | } |
4468 | ||
0bfdf32f | 4469 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4470 | Important in the non-stop mode asynchronous protocol. */ |
f557a88a | 4471 | set_desired_thread (); |
8336d594 PA |
4472 | |
4473 | return 0; | |
bd99dc85 | 4474 | } |
6d580b63 YQ |
4475 | |
4476 | #if GDB_SELF_TEST | |
4477 | namespace selftests | |
4478 | { | |
4479 | ||
4480 | void | |
4481 | reset () | |
4482 | {} | |
4483 | ||
4484 | } // namespace selftests | |
4485 | #endif /* GDB_SELF_TEST */ |