Commit | Line | Data |
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c906108c | 1 | /* Main code for remote server for GDB. |
42a4f53d | 2 | Copyright (C) 1989-2019 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 9 | (at your option) any later version. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "server.h" | |
623b6bdf | 20 | #include "gdbthread.h" |
0747795c | 21 | #include "common/agent.h" |
14a00470 | 22 | #include "notif.h" |
3aee8918 | 23 | #include "tdesc.h" |
0747795c TT |
24 | #include "common/rsp-low.h" |
25 | #include "common/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 |
0747795c TT |
31 | #include "common/gdb_vecs.h" |
32 | #include "common/gdb_wait.h" | |
33 | #include "common/btrace-common.h" | |
34 | #include "common/filestuff.h" | |
c144c7a0 | 35 | #include "tracepoint.h" |
799cdc37 | 36 | #include "dll.h" |
533b0600 | 37 | #include "hostio.h" |
7c5ded6a | 38 | #include <vector> |
0747795c TT |
39 | #include "common/common-inferior.h" |
40 | #include "common/job-control.h" | |
41 | #include "common/environ.h" | |
25e3c82c | 42 | #include "filenames.h" |
0747795c | 43 | #include "common/pathstuff.h" |
2090129c | 44 | |
6d580b63 | 45 | #include "common/selftest.h" |
37991b4f | 46 | #include "common/scope-exit.h" |
6d580b63 | 47 | |
f8a4e119 SM |
48 | #define require_running_or_return(BUF) \ |
49 | if (!target_running ()) \ | |
50 | { \ | |
51 | write_enn (BUF); \ | |
52 | return; \ | |
53 | } | |
54 | ||
55 | #define require_running_or_break(BUF) \ | |
56 | if (!target_running ()) \ | |
57 | { \ | |
58 | write_enn (BUF); \ | |
59 | break; \ | |
60 | } | |
61 | ||
b4987c95 SDJ |
62 | /* String containing the current directory (what getwd would return). */ |
63 | ||
64 | char *current_directory; | |
65 | ||
2090129c SDJ |
66 | /* The environment to pass to the inferior when creating it. */ |
67 | ||
9a6c7d9c | 68 | static gdb_environ our_environ; |
2090129c SDJ |
69 | |
70 | /* Start the inferior using a shell. */ | |
71 | ||
72 | /* We always try to start the inferior using a shell. */ | |
73 | ||
74 | int startup_with_shell = 1; | |
a9fa9f7d | 75 | |
0d62e5e8 DJ |
76 | int server_waiting; |
77 | ||
17b1509a | 78 | static int extended_protocol; |
2d717e4f DJ |
79 | static int response_needed; |
80 | static int exit_requested; | |
81 | ||
03f2bd59 JK |
82 | /* --once: Exit after the first connection has closed. */ |
83 | int run_once; | |
84 | ||
f2faf941 PA |
85 | /* Whether to report TARGET_WAITKING_NO_RESUMED events. */ |
86 | static int report_no_resumed; | |
87 | ||
bd99dc85 | 88 | int non_stop; |
03583c20 | 89 | |
25e3c82c SDJ |
90 | static struct { |
91 | /* Set the PROGRAM_PATH. Here we adjust the path of the provided | |
92 | binary if needed. */ | |
93 | void set (gdb::unique_xmalloc_ptr<char> &&path) | |
94 | { | |
95 | m_path = std::move (path); | |
96 | ||
97 | /* Make sure we're using the absolute path of the inferior when | |
98 | creating it. */ | |
99 | if (!contains_dir_separator (m_path.get ())) | |
100 | { | |
101 | int reg_file_errno; | |
102 | ||
103 | /* Check if the file is in our CWD. If it is, then we prefix | |
104 | its name with CURRENT_DIRECTORY. Otherwise, we leave the | |
105 | name as-is because we'll try searching for it in $PATH. */ | |
106 | if (is_regular_file (m_path.get (), ®_file_errno)) | |
107 | m_path = gdb_abspath (m_path.get ()); | |
108 | } | |
109 | } | |
110 | ||
111 | /* Return the PROGRAM_PATH. */ | |
112 | char *get () | |
113 | { return m_path.get (); } | |
114 | ||
115 | private: | |
116 | /* The program name, adjusted if needed. */ | |
117 | gdb::unique_xmalloc_ptr<char> m_path; | |
118 | } program_path; | |
2090129c SDJ |
119 | static std::vector<char *> program_args; |
120 | static std::string wrapper_argv; | |
2d717e4f | 121 | |
a9fa9f7d DJ |
122 | /* The PID of the originally created or attached inferior. Used to |
123 | send signals to the process when GDB sends us an asynchronous interrupt | |
124 | (user hitting Control-C in the client), and to wait for the child to exit | |
125 | when no longer debugging it. */ | |
126 | ||
a1928bad | 127 | unsigned long signal_pid; |
a9fa9f7d | 128 | |
ec56be1b PA |
129 | /* Set if you want to disable optional thread related packets support |
130 | in gdbserver, for the sake of testing GDB against stubs that don't | |
131 | support them. */ | |
132 | int disable_packet_vCont; | |
133 | int disable_packet_Tthread; | |
134 | int disable_packet_qC; | |
135 | int disable_packet_qfThreadInfo; | |
136 | ||
bd99dc85 PA |
137 | static unsigned char *mem_buf; |
138 | ||
14a00470 YQ |
139 | /* A sub-class of 'struct notif_event' for stop, holding information |
140 | relative to a single stop reply. We keep a queue of these to | |
141 | push to GDB in non-stop mode. */ | |
142 | ||
bd99dc85 PA |
143 | struct vstop_notif |
144 | { | |
14a00470 | 145 | struct notif_event base; |
bd99dc85 PA |
146 | |
147 | /* Thread or process that got the event. */ | |
95954743 | 148 | ptid_t ptid; |
bd99dc85 PA |
149 | |
150 | /* Event info. */ | |
151 | struct target_waitstatus status; | |
152 | }; | |
153 | ||
f4abbc16 MM |
154 | /* The current btrace configuration. This is gdbserver's mirror of GDB's |
155 | btrace configuration. */ | |
156 | static struct btrace_config current_btrace_conf; | |
157 | ||
14a00470 | 158 | DEFINE_QUEUE_P (notif_event_p); |
bd99dc85 | 159 | |
c12a5089 SC |
160 | /* The client remote protocol state. */ |
161 | ||
162 | static client_state g_client_state; | |
163 | ||
164 | client_state & | |
165 | get_client_state () | |
166 | { | |
167 | client_state &cs = g_client_state; | |
168 | return cs; | |
169 | } | |
170 | ||
171 | ||
bd99dc85 PA |
172 | /* Put a stop reply to the stop reply queue. */ |
173 | ||
174 | static void | |
95954743 | 175 | queue_stop_reply (ptid_t ptid, struct target_waitstatus *status) |
bd99dc85 | 176 | { |
8d749320 | 177 | struct vstop_notif *new_notif = XNEW (struct vstop_notif); |
bd99dc85 | 178 | |
bd99dc85 PA |
179 | new_notif->ptid = ptid; |
180 | new_notif->status = *status; | |
181 | ||
14a00470 | 182 | notif_event_enque (¬if_stop, (struct notif_event *) new_notif); |
bd99dc85 PA |
183 | } |
184 | ||
14a00470 | 185 | static int |
465a859e PA |
186 | remove_all_on_match_ptid (QUEUE (notif_event_p) *q, |
187 | QUEUE_ITER (notif_event_p) *iter, | |
188 | struct notif_event *event, | |
189 | void *data) | |
bd99dc85 | 190 | { |
465a859e PA |
191 | ptid_t filter_ptid = *(ptid_t *) data; |
192 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; | |
d20a8ad9 | 193 | |
26a57c92 | 194 | if (vstop_event->ptid.matches (filter_ptid)) |
bd99dc85 | 195 | { |
14a00470 YQ |
196 | if (q->free_func != NULL) |
197 | q->free_func (event); | |
198 | ||
199 | QUEUE_remove_elem (notif_event_p, q, iter); | |
bd99dc85 | 200 | } |
14a00470 YQ |
201 | |
202 | return 1; | |
bd99dc85 PA |
203 | } |
204 | ||
465a859e | 205 | /* See server.h. */ |
bd99dc85 | 206 | |
465a859e PA |
207 | void |
208 | discard_queued_stop_replies (ptid_t ptid) | |
bd99dc85 | 209 | { |
14a00470 | 210 | QUEUE_iterate (notif_event_p, notif_stop.queue, |
465a859e | 211 | remove_all_on_match_ptid, &ptid); |
bd99dc85 PA |
212 | } |
213 | ||
bd99dc85 | 214 | static void |
14a00470 | 215 | vstop_notif_reply (struct notif_event *event, char *own_buf) |
bd99dc85 | 216 | { |
14a00470 YQ |
217 | struct vstop_notif *vstop = (struct vstop_notif *) event; |
218 | ||
219 | prepare_resume_reply (own_buf, vstop->ptid, &vstop->status); | |
bd99dc85 PA |
220 | } |
221 | ||
5a04c4cf PA |
222 | /* QUEUE_iterate callback helper for in_queued_stop_replies. */ |
223 | ||
224 | static int | |
225 | in_queued_stop_replies_ptid (QUEUE (notif_event_p) *q, | |
226 | QUEUE_ITER (notif_event_p) *iter, | |
227 | struct notif_event *event, | |
228 | void *data) | |
229 | { | |
230 | ptid_t filter_ptid = *(ptid_t *) data; | |
231 | struct vstop_notif *vstop_event = (struct vstop_notif *) event; | |
232 | ||
26a57c92 | 233 | if (vstop_event->ptid.matches (filter_ptid)) |
5a04c4cf PA |
234 | return 0; |
235 | ||
236 | /* Don't resume fork children that GDB does not know about yet. */ | |
237 | if ((vstop_event->status.kind == TARGET_WAITKIND_FORKED | |
238 | || vstop_event->status.kind == TARGET_WAITKIND_VFORKED) | |
26a57c92 | 239 | && vstop_event->status.value.related_pid.matches (filter_ptid)) |
5a04c4cf PA |
240 | return 0; |
241 | ||
242 | return 1; | |
243 | } | |
244 | ||
245 | /* See server.h. */ | |
246 | ||
247 | int | |
248 | in_queued_stop_replies (ptid_t ptid) | |
249 | { | |
250 | return !QUEUE_iterate (notif_event_p, notif_stop.queue, | |
251 | in_queued_stop_replies_ptid, &ptid); | |
252 | } | |
253 | ||
14a00470 YQ |
254 | struct notif_server notif_stop = |
255 | { | |
256 | "vStopped", "Stop", NULL, vstop_notif_reply, | |
257 | }; | |
258 | ||
2d717e4f DJ |
259 | static int |
260 | target_running (void) | |
261 | { | |
649ebbca | 262 | return get_first_thread () != NULL; |
2d717e4f DJ |
263 | } |
264 | ||
2090129c | 265 | /* See common/common-inferior.h. */ |
ccd213ac | 266 | |
2090129c SDJ |
267 | const char * |
268 | get_exec_wrapper () | |
269 | { | |
270 | return !wrapper_argv.empty () ? wrapper_argv.c_str () : NULL; | |
271 | } | |
eb97750b | 272 | |
2090129c | 273 | /* See common/common-inferior.h. */ |
eb97750b | 274 | |
2090129c SDJ |
275 | char * |
276 | get_exec_file (int err) | |
277 | { | |
25e3c82c | 278 | if (err && program_path.get () == NULL) |
2090129c | 279 | error (_("No executable file specified.")); |
ccd213ac | 280 | |
25e3c82c | 281 | return program_path.get (); |
2090129c | 282 | } |
5b1c542e | 283 | |
2090129c | 284 | /* See server.h. */ |
d20a8ad9 | 285 | |
9a6c7d9c | 286 | gdb_environ * |
2090129c SDJ |
287 | get_environ () |
288 | { | |
9a6c7d9c | 289 | return &our_environ; |
c906108c SS |
290 | } |
291 | ||
45b7b345 | 292 | static int |
5b1c542e | 293 | attach_inferior (int pid) |
45b7b345 | 294 | { |
c12a5089 | 295 | client_state &cs = get_client_state (); |
45b7b345 DJ |
296 | /* myattach should return -1 if attaching is unsupported, |
297 | 0 if it succeeded, and call error() otherwise. */ | |
a9fa9f7d | 298 | |
df0da8a2 AH |
299 | if (find_process_pid (pid) != nullptr) |
300 | error ("Already attached to process %d\n", pid); | |
301 | ||
45b7b345 DJ |
302 | if (myattach (pid) != 0) |
303 | return -1; | |
304 | ||
6910d122 | 305 | fprintf (stderr, "Attached; pid = %d\n", pid); |
b80864fb | 306 | fflush (stderr); |
6910d122 | 307 | |
a9fa9f7d DJ |
308 | /* FIXME - It may be that we should get the SIGNAL_PID from the |
309 | attach function, so that it can be the main thread instead of | |
310 | whichever we were told to attach to. */ | |
311 | signal_pid = pid; | |
312 | ||
bd99dc85 PA |
313 | if (!non_stop) |
314 | { | |
f2907e49 | 315 | cs.last_ptid = mywait (ptid_t (pid), &cs.last_status, 0, 0); |
bd99dc85 PA |
316 | |
317 | /* GDB knows to ignore the first SIGSTOP after attaching to a running | |
318 | process using the "attach" command, but this is different; it's | |
319 | just using "target remote". Pretend it's just starting up. */ | |
c12a5089 SC |
320 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED |
321 | && cs.last_status.value.sig == GDB_SIGNAL_STOP) | |
322 | cs.last_status.value.sig = GDB_SIGNAL_TRAP; | |
d20a8ad9 | 323 | |
0bfdf32f | 324 | current_thread->last_resume_kind = resume_stop; |
c12a5089 | 325 | current_thread->last_status = cs.last_status; |
bd99dc85 | 326 | } |
9db87ebd | 327 | |
45b7b345 DJ |
328 | return 0; |
329 | } | |
330 | ||
c906108c | 331 | extern int remote_debug; |
ce3a066d | 332 | |
0876f84a DJ |
333 | /* Decode a qXfer read request. Return 0 if everything looks OK, |
334 | or -1 otherwise. */ | |
335 | ||
336 | static int | |
d08aafef | 337 | decode_xfer_read (char *buf, CORE_ADDR *ofs, unsigned int *len) |
0876f84a | 338 | { |
d08aafef PA |
339 | /* After the read marker and annex, qXfer looks like a |
340 | traditional 'm' packet. */ | |
341 | decode_m_packet (buf, ofs, len); | |
342 | ||
343 | return 0; | |
344 | } | |
345 | ||
346 | static int | |
347 | decode_xfer (char *buf, char **object, char **rw, char **annex, char **offset) | |
348 | { | |
349 | /* Extract and NUL-terminate the object. */ | |
350 | *object = buf; | |
351 | while (*buf && *buf != ':') | |
352 | buf++; | |
353 | if (*buf == '\0') | |
354 | return -1; | |
355 | *buf++ = 0; | |
356 | ||
357 | /* Extract and NUL-terminate the read/write action. */ | |
358 | *rw = buf; | |
359 | while (*buf && *buf != ':') | |
360 | buf++; | |
361 | if (*buf == '\0') | |
362 | return -1; | |
363 | *buf++ = 0; | |
364 | ||
0876f84a DJ |
365 | /* Extract and NUL-terminate the annex. */ |
366 | *annex = buf; | |
367 | while (*buf && *buf != ':') | |
368 | buf++; | |
369 | if (*buf == '\0') | |
370 | return -1; | |
371 | *buf++ = 0; | |
372 | ||
d08aafef | 373 | *offset = buf; |
0876f84a DJ |
374 | return 0; |
375 | } | |
376 | ||
377 | /* Write the response to a successful qXfer read. Returns the | |
378 | length of the (binary) data stored in BUF, corresponding | |
379 | to as much of DATA/LEN as we could fit. IS_MORE controls | |
380 | the first character of the response. */ | |
381 | static int | |
f98cd059 | 382 | write_qxfer_response (char *buf, const gdb_byte *data, int len, int is_more) |
0876f84a DJ |
383 | { |
384 | int out_len; | |
385 | ||
386 | if (is_more) | |
387 | buf[0] = 'm'; | |
388 | else | |
389 | buf[0] = 'l'; | |
390 | ||
124e13d9 SM |
391 | return remote_escape_output (data, len, 1, (unsigned char *) buf + 1, |
392 | &out_len, PBUFSIZ - 2) + 1; | |
0876f84a DJ |
393 | } |
394 | ||
f4abbc16 | 395 | /* Handle btrace enabling in BTS format. */ |
9accd112 | 396 | |
9ee23a85 | 397 | static void |
f4abbc16 | 398 | handle_btrace_enable_bts (struct thread_info *thread) |
9accd112 MM |
399 | { |
400 | if (thread->btrace != NULL) | |
9ee23a85 | 401 | error (_("Btrace already enabled.")); |
9accd112 | 402 | |
f4abbc16 | 403 | current_btrace_conf.format = BTRACE_FORMAT_BTS; |
9c80ecd6 | 404 | thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf); |
9accd112 MM |
405 | } |
406 | ||
bc504a31 | 407 | /* Handle btrace enabling in Intel Processor Trace format. */ |
b20a6524 | 408 | |
9ee23a85 | 409 | static void |
b20a6524 MM |
410 | handle_btrace_enable_pt (struct thread_info *thread) |
411 | { | |
412 | if (thread->btrace != NULL) | |
9ee23a85 | 413 | error (_("Btrace already enabled.")); |
b20a6524 MM |
414 | |
415 | current_btrace_conf.format = BTRACE_FORMAT_PT; | |
9c80ecd6 | 416 | thread->btrace = target_enable_btrace (thread->id, ¤t_btrace_conf); |
b20a6524 MM |
417 | } |
418 | ||
9accd112 MM |
419 | /* Handle btrace disabling. */ |
420 | ||
9ee23a85 | 421 | static void |
9accd112 MM |
422 | handle_btrace_disable (struct thread_info *thread) |
423 | { | |
424 | ||
425 | if (thread->btrace == NULL) | |
9ee23a85 | 426 | error (_("Branch tracing not enabled.")); |
9accd112 MM |
427 | |
428 | if (target_disable_btrace (thread->btrace) != 0) | |
9ee23a85 | 429 | error (_("Could not disable branch tracing.")); |
9accd112 MM |
430 | |
431 | thread->btrace = NULL; | |
9accd112 MM |
432 | } |
433 | ||
434 | /* Handle the "Qbtrace" packet. */ | |
435 | ||
436 | static int | |
437 | handle_btrace_general_set (char *own_buf) | |
438 | { | |
c12a5089 | 439 | client_state &cs = get_client_state (); |
9accd112 | 440 | struct thread_info *thread; |
9accd112 MM |
441 | char *op; |
442 | ||
61012eef | 443 | if (!startswith (own_buf, "Qbtrace:")) |
9accd112 MM |
444 | return 0; |
445 | ||
446 | op = own_buf + strlen ("Qbtrace:"); | |
447 | ||
d7e15655 TT |
448 | if (cs.general_thread == null_ptid |
449 | || cs.general_thread == minus_one_ptid) | |
9accd112 MM |
450 | { |
451 | strcpy (own_buf, "E.Must select a single thread."); | |
452 | return -1; | |
453 | } | |
454 | ||
c12a5089 | 455 | thread = find_thread_ptid (cs.general_thread); |
9accd112 MM |
456 | if (thread == NULL) |
457 | { | |
458 | strcpy (own_buf, "E.No such thread."); | |
459 | return -1; | |
460 | } | |
461 | ||
a70b8144 | 462 | try |
9ee23a85 MM |
463 | { |
464 | if (strcmp (op, "bts") == 0) | |
465 | handle_btrace_enable_bts (thread); | |
466 | else if (strcmp (op, "pt") == 0) | |
467 | handle_btrace_enable_pt (thread); | |
468 | else if (strcmp (op, "off") == 0) | |
469 | handle_btrace_disable (thread); | |
470 | else | |
471 | error (_("Bad Qbtrace operation. Use bts, pt, or off.")); | |
472 | ||
473 | write_ok (own_buf); | |
474 | } | |
a70b8144 | 475 | catch (const gdb_exception_RETURN_MASK_ERROR &exception) |
9ee23a85 | 476 | { |
3d6e9d23 | 477 | sprintf (own_buf, "E.%s", exception.what ()); |
9ee23a85 | 478 | } |
9accd112 MM |
479 | |
480 | return 1; | |
481 | } | |
482 | ||
d33501a5 MM |
483 | /* Handle the "Qbtrace-conf" packet. */ |
484 | ||
485 | static int | |
486 | handle_btrace_conf_general_set (char *own_buf) | |
487 | { | |
c12a5089 | 488 | client_state &cs = get_client_state (); |
d33501a5 MM |
489 | struct thread_info *thread; |
490 | char *op; | |
491 | ||
61012eef | 492 | if (!startswith (own_buf, "Qbtrace-conf:")) |
d33501a5 MM |
493 | return 0; |
494 | ||
495 | op = own_buf + strlen ("Qbtrace-conf:"); | |
496 | ||
d7e15655 TT |
497 | if (cs.general_thread == null_ptid |
498 | || cs.general_thread == minus_one_ptid) | |
d33501a5 MM |
499 | { |
500 | strcpy (own_buf, "E.Must select a single thread."); | |
501 | return -1; | |
502 | } | |
503 | ||
c12a5089 | 504 | thread = find_thread_ptid (cs.general_thread); |
d33501a5 MM |
505 | if (thread == NULL) |
506 | { | |
507 | strcpy (own_buf, "E.No such thread."); | |
508 | return -1; | |
509 | } | |
510 | ||
61012eef | 511 | if (startswith (op, "bts:size=")) |
d33501a5 MM |
512 | { |
513 | unsigned long size; | |
514 | char *endp = NULL; | |
515 | ||
516 | errno = 0; | |
517 | size = strtoul (op + strlen ("bts:size="), &endp, 16); | |
518 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
519 | { | |
520 | strcpy (own_buf, "E.Bad size value."); | |
521 | return -1; | |
522 | } | |
523 | ||
524 | current_btrace_conf.bts.size = (unsigned int) size; | |
525 | } | |
b20a6524 MM |
526 | else if (strncmp (op, "pt:size=", strlen ("pt:size=")) == 0) |
527 | { | |
528 | unsigned long size; | |
529 | char *endp = NULL; | |
530 | ||
531 | errno = 0; | |
532 | size = strtoul (op + strlen ("pt:size="), &endp, 16); | |
533 | if (endp == NULL || *endp != 0 || errno != 0 || size > UINT_MAX) | |
534 | { | |
535 | strcpy (own_buf, "E.Bad size value."); | |
536 | return -1; | |
537 | } | |
538 | ||
539 | current_btrace_conf.pt.size = (unsigned int) size; | |
540 | } | |
d33501a5 MM |
541 | else |
542 | { | |
543 | strcpy (own_buf, "E.Bad Qbtrace configuration option."); | |
544 | return -1; | |
545 | } | |
546 | ||
547 | write_ok (own_buf); | |
548 | return 1; | |
549 | } | |
550 | ||
89be2091 | 551 | /* Handle all of the extended 'Q' packets. */ |
ae1ada35 DE |
552 | |
553 | static void | |
89be2091 DJ |
554 | handle_general_set (char *own_buf) |
555 | { | |
c12a5089 | 556 | client_state &cs = get_client_state (); |
61012eef | 557 | if (startswith (own_buf, "QPassSignals:")) |
89be2091 | 558 | { |
a493e3e2 | 559 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
89be2091 DJ |
560 | const char *p = own_buf + strlen ("QPassSignals:"); |
561 | CORE_ADDR cursig; | |
562 | ||
563 | p = decode_address_to_semicolon (&cursig, p); | |
564 | for (i = 0; i < numsigs; i++) | |
565 | { | |
566 | if (i == cursig) | |
567 | { | |
c12a5089 | 568 | cs.pass_signals[i] = 1; |
89be2091 DJ |
569 | if (*p == '\0') |
570 | /* Keep looping, to clear the remaining signals. */ | |
571 | cursig = -1; | |
572 | else | |
573 | p = decode_address_to_semicolon (&cursig, p); | |
574 | } | |
575 | else | |
c12a5089 | 576 | cs.pass_signals[i] = 0; |
89be2091 DJ |
577 | } |
578 | strcpy (own_buf, "OK"); | |
579 | return; | |
580 | } | |
581 | ||
61012eef | 582 | if (startswith (own_buf, "QProgramSignals:")) |
9b224c5e | 583 | { |
a493e3e2 | 584 | int numsigs = (int) GDB_SIGNAL_LAST, i; |
9b224c5e PA |
585 | const char *p = own_buf + strlen ("QProgramSignals:"); |
586 | CORE_ADDR cursig; | |
587 | ||
c12a5089 | 588 | cs.program_signals_p = 1; |
9b224c5e PA |
589 | |
590 | p = decode_address_to_semicolon (&cursig, p); | |
591 | for (i = 0; i < numsigs; i++) | |
592 | { | |
593 | if (i == cursig) | |
594 | { | |
c12a5089 | 595 | cs.program_signals[i] = 1; |
9b224c5e PA |
596 | if (*p == '\0') |
597 | /* Keep looping, to clear the remaining signals. */ | |
598 | cursig = -1; | |
599 | else | |
600 | p = decode_address_to_semicolon (&cursig, p); | |
601 | } | |
602 | else | |
c12a5089 | 603 | cs.program_signals[i] = 0; |
9b224c5e PA |
604 | } |
605 | strcpy (own_buf, "OK"); | |
606 | return; | |
607 | } | |
608 | ||
82075af2 JS |
609 | if (startswith (own_buf, "QCatchSyscalls:")) |
610 | { | |
611 | const char *p = own_buf + sizeof ("QCatchSyscalls:") - 1; | |
612 | int enabled = -1; | |
613 | CORE_ADDR sysno; | |
614 | struct process_info *process; | |
615 | ||
616 | if (!target_running () || !target_supports_catch_syscall ()) | |
617 | { | |
618 | write_enn (own_buf); | |
619 | return; | |
620 | } | |
621 | ||
622 | if (strcmp (p, "0") == 0) | |
623 | enabled = 0; | |
624 | else if (p[0] == '1' && (p[1] == ';' || p[1] == '\0')) | |
625 | enabled = 1; | |
626 | else | |
627 | { | |
628 | fprintf (stderr, "Unknown catch-syscalls mode requested: %s\n", | |
629 | own_buf); | |
630 | write_enn (own_buf); | |
631 | return; | |
632 | } | |
633 | ||
634 | process = current_process (); | |
f27866ba | 635 | process->syscalls_to_catch.clear (); |
82075af2 JS |
636 | |
637 | if (enabled) | |
638 | { | |
639 | p += 1; | |
640 | if (*p == ';') | |
641 | { | |
642 | p += 1; | |
643 | while (*p != '\0') | |
644 | { | |
645 | p = decode_address_to_semicolon (&sysno, p); | |
f27866ba | 646 | process->syscalls_to_catch.push_back (sysno); |
82075af2 JS |
647 | } |
648 | } | |
649 | else | |
f27866ba | 650 | process->syscalls_to_catch.push_back (ANY_SYSCALL); |
82075af2 JS |
651 | } |
652 | ||
653 | write_ok (own_buf); | |
654 | return; | |
655 | } | |
656 | ||
0a2dde4a SDJ |
657 | if (strcmp (own_buf, "QEnvironmentReset") == 0) |
658 | { | |
659 | our_environ = gdb_environ::from_host_environ (); | |
660 | ||
661 | write_ok (own_buf); | |
662 | return; | |
663 | } | |
664 | ||
665 | if (startswith (own_buf, "QEnvironmentHexEncoded:")) | |
666 | { | |
667 | const char *p = own_buf + sizeof ("QEnvironmentHexEncoded:") - 1; | |
668 | /* The final form of the environment variable. FINAL_VAR will | |
669 | hold the 'VAR=VALUE' format. */ | |
670 | std::string final_var = hex2str (p); | |
671 | std::string var_name, var_value; | |
672 | ||
673 | if (remote_debug) | |
674 | { | |
675 | debug_printf (_("[QEnvironmentHexEncoded received '%s']\n"), p); | |
676 | debug_printf (_("[Environment variable to be set: '%s']\n"), | |
677 | final_var.c_str ()); | |
678 | debug_flush (); | |
679 | } | |
680 | ||
681 | size_t pos = final_var.find ('='); | |
682 | if (pos == std::string::npos) | |
683 | { | |
684 | warning (_("Unexpected format for environment variable: '%s'"), | |
685 | final_var.c_str ()); | |
686 | write_enn (own_buf); | |
687 | return; | |
688 | } | |
689 | ||
690 | var_name = final_var.substr (0, pos); | |
691 | var_value = final_var.substr (pos + 1, std::string::npos); | |
692 | ||
693 | our_environ.set (var_name.c_str (), var_value.c_str ()); | |
694 | ||
695 | write_ok (own_buf); | |
696 | return; | |
697 | } | |
698 | ||
699 | if (startswith (own_buf, "QEnvironmentUnset:")) | |
700 | { | |
701 | const char *p = own_buf + sizeof ("QEnvironmentUnset:") - 1; | |
702 | std::string varname = hex2str (p); | |
703 | ||
704 | if (remote_debug) | |
705 | { | |
706 | debug_printf (_("[QEnvironmentUnset received '%s']\n"), p); | |
707 | debug_printf (_("[Environment variable to be unset: '%s']\n"), | |
708 | varname.c_str ()); | |
709 | debug_flush (); | |
710 | } | |
711 | ||
712 | our_environ.unset (varname.c_str ()); | |
713 | ||
714 | write_ok (own_buf); | |
715 | return; | |
716 | } | |
717 | ||
a6f3e723 SL |
718 | if (strcmp (own_buf, "QStartNoAckMode") == 0) |
719 | { | |
720 | if (remote_debug) | |
721 | { | |
4eefa7bc PA |
722 | debug_printf ("[noack mode enabled]\n"); |
723 | debug_flush (); | |
a6f3e723 SL |
724 | } |
725 | ||
c12a5089 | 726 | cs.noack_mode = 1; |
a6f3e723 SL |
727 | write_ok (own_buf); |
728 | return; | |
729 | } | |
730 | ||
61012eef | 731 | if (startswith (own_buf, "QNonStop:")) |
bd99dc85 PA |
732 | { |
733 | char *mode = own_buf + 9; | |
734 | int req = -1; | |
b2333d22 | 735 | const char *req_str; |
bd99dc85 PA |
736 | |
737 | if (strcmp (mode, "0") == 0) | |
738 | req = 0; | |
739 | else if (strcmp (mode, "1") == 0) | |
740 | req = 1; | |
741 | else | |
742 | { | |
743 | /* We don't know what this mode is, so complain to | |
744 | GDB. */ | |
745 | fprintf (stderr, "Unknown non-stop mode requested: %s\n", | |
746 | own_buf); | |
747 | write_enn (own_buf); | |
748 | return; | |
749 | } | |
750 | ||
751 | req_str = req ? "non-stop" : "all-stop"; | |
752 | if (start_non_stop (req) != 0) | |
753 | { | |
754 | fprintf (stderr, "Setting %s mode failed\n", req_str); | |
755 | write_enn (own_buf); | |
756 | return; | |
757 | } | |
758 | ||
759 | non_stop = req; | |
760 | ||
761 | if (remote_debug) | |
4eefa7bc | 762 | debug_printf ("[%s mode enabled]\n", req_str); |
bd99dc85 PA |
763 | |
764 | write_ok (own_buf); | |
765 | return; | |
766 | } | |
767 | ||
61012eef | 768 | if (startswith (own_buf, "QDisableRandomization:")) |
03583c20 UW |
769 | { |
770 | char *packet = own_buf + strlen ("QDisableRandomization:"); | |
771 | ULONGEST setting; | |
772 | ||
773 | unpack_varlen_hex (packet, &setting); | |
c12a5089 | 774 | cs.disable_randomization = setting; |
03583c20 UW |
775 | |
776 | if (remote_debug) | |
777 | { | |
c12a5089 | 778 | debug_printf (cs.disable_randomization |
4eefa7bc PA |
779 | ? "[address space randomization disabled]\n" |
780 | : "[address space randomization enabled]\n"); | |
03583c20 UW |
781 | } |
782 | ||
783 | write_ok (own_buf); | |
784 | return; | |
785 | } | |
786 | ||
219f2f23 PA |
787 | if (target_supports_tracepoints () |
788 | && handle_tracepoint_general_set (own_buf)) | |
789 | return; | |
790 | ||
61012eef | 791 | if (startswith (own_buf, "QAgent:")) |
d1feda86 YQ |
792 | { |
793 | char *mode = own_buf + strlen ("QAgent:"); | |
794 | int req = 0; | |
795 | ||
796 | if (strcmp (mode, "0") == 0) | |
797 | req = 0; | |
798 | else if (strcmp (mode, "1") == 0) | |
799 | req = 1; | |
800 | else | |
801 | { | |
802 | /* We don't know what this value is, so complain to GDB. */ | |
803 | sprintf (own_buf, "E.Unknown QAgent value"); | |
804 | return; | |
805 | } | |
806 | ||
807 | /* Update the flag. */ | |
808 | use_agent = req; | |
809 | if (remote_debug) | |
4eefa7bc | 810 | debug_printf ("[%s agent]\n", req ? "Enable" : "Disable"); |
d1feda86 YQ |
811 | write_ok (own_buf); |
812 | return; | |
813 | } | |
814 | ||
9accd112 MM |
815 | if (handle_btrace_general_set (own_buf)) |
816 | return; | |
817 | ||
d33501a5 MM |
818 | if (handle_btrace_conf_general_set (own_buf)) |
819 | return; | |
820 | ||
65706a29 PA |
821 | if (startswith (own_buf, "QThreadEvents:")) |
822 | { | |
823 | char *mode = own_buf + strlen ("QThreadEvents:"); | |
824 | enum tribool req = TRIBOOL_UNKNOWN; | |
825 | ||
826 | if (strcmp (mode, "0") == 0) | |
827 | req = TRIBOOL_FALSE; | |
828 | else if (strcmp (mode, "1") == 0) | |
829 | req = TRIBOOL_TRUE; | |
830 | else | |
831 | { | |
65706a29 PA |
832 | /* We don't know what this mode is, so complain to GDB. */ |
833 | sprintf (own_buf, "E.Unknown thread-events mode requested: %s\n", | |
b9671caf | 834 | mode); |
65706a29 PA |
835 | return; |
836 | } | |
837 | ||
c12a5089 | 838 | cs.report_thread_events = (req == TRIBOOL_TRUE); |
65706a29 PA |
839 | |
840 | if (remote_debug) | |
841 | { | |
c12a5089 | 842 | const char *req_str = cs.report_thread_events ? "enabled" : "disabled"; |
65706a29 | 843 | |
4eefa7bc | 844 | debug_printf ("[thread events are now %s]\n", req_str); |
65706a29 PA |
845 | } |
846 | ||
847 | write_ok (own_buf); | |
848 | return; | |
849 | } | |
850 | ||
aefd8b33 SDJ |
851 | if (startswith (own_buf, "QStartupWithShell:")) |
852 | { | |
853 | const char *value = own_buf + strlen ("QStartupWithShell:"); | |
854 | ||
855 | if (strcmp (value, "1") == 0) | |
856 | startup_with_shell = true; | |
857 | else if (strcmp (value, "0") == 0) | |
858 | startup_with_shell = false; | |
859 | else | |
860 | { | |
861 | /* Unknown value. */ | |
862 | fprintf (stderr, "Unknown value to startup-with-shell: %s\n", | |
863 | own_buf); | |
864 | write_enn (own_buf); | |
865 | return; | |
866 | } | |
867 | ||
868 | if (remote_debug) | |
869 | debug_printf (_("[Inferior will %s started with shell]"), | |
870 | startup_with_shell ? "be" : "not be"); | |
871 | ||
872 | write_ok (own_buf); | |
873 | return; | |
874 | } | |
875 | ||
bc3b087d SDJ |
876 | if (startswith (own_buf, "QSetWorkingDir:")) |
877 | { | |
878 | const char *p = own_buf + strlen ("QSetWorkingDir:"); | |
879 | ||
880 | if (*p != '\0') | |
881 | { | |
882 | std::string path = hex2str (p); | |
883 | ||
884 | set_inferior_cwd (path.c_str ()); | |
885 | ||
886 | if (remote_debug) | |
887 | debug_printf (_("[Set the inferior's current directory to %s]\n"), | |
888 | path.c_str ()); | |
889 | } | |
890 | else | |
891 | { | |
892 | /* An empty argument means that we should clear out any | |
893 | previously set cwd for the inferior. */ | |
894 | set_inferior_cwd (NULL); | |
895 | ||
896 | if (remote_debug) | |
897 | debug_printf (_("\ | |
898 | [Unset the inferior's current directory; will use gdbserver's cwd]\n")); | |
899 | } | |
900 | write_ok (own_buf); | |
901 | ||
902 | return; | |
903 | } | |
904 | ||
89be2091 DJ |
905 | /* Otherwise we didn't know what packet it was. Say we didn't |
906 | understand it. */ | |
907 | own_buf[0] = 0; | |
908 | } | |
909 | ||
23181151 | 910 | static const char * |
fb1e4ffc | 911 | get_features_xml (const char *annex) |
23181151 | 912 | { |
3aee8918 PA |
913 | const struct target_desc *desc = current_target_desc (); |
914 | ||
915 | /* `desc->xmltarget' defines what to return when looking for the | |
916 | "target.xml" file. Its contents can either be verbatim XML code | |
917 | (prefixed with a '@') or else the name of the actual XML file to | |
918 | be used in place of "target.xml". | |
fb1e4ffc | 919 | |
9b4b61c8 UW |
920 | This variable is set up from the auto-generated |
921 | init_registers_... routine for the current target. */ | |
fb1e4ffc | 922 | |
0abe8a89 | 923 | if (strcmp (annex, "target.xml") == 0) |
23181151 | 924 | { |
e98577a9 | 925 | const char *ret = tdesc_get_features_xml (desc); |
0abe8a89 YQ |
926 | |
927 | if (*ret == '@') | |
928 | return ret + 1; | |
23181151 | 929 | else |
0abe8a89 | 930 | annex = ret; |
23181151 DJ |
931 | } |
932 | ||
9b4b61c8 UW |
933 | #ifdef USE_XML |
934 | { | |
935 | extern const char *const xml_builtin[][2]; | |
936 | int i; | |
937 | ||
938 | /* Look for the annex. */ | |
939 | for (i = 0; xml_builtin[i][0] != NULL; i++) | |
940 | if (strcmp (annex, xml_builtin[i][0]) == 0) | |
941 | break; | |
942 | ||
943 | if (xml_builtin[i][0] != NULL) | |
944 | return xml_builtin[i][1]; | |
945 | } | |
946 | #endif | |
947 | ||
948 | return NULL; | |
23181151 DJ |
949 | } |
950 | ||
5b3da067 | 951 | static void |
c74d0ad8 DJ |
952 | monitor_show_help (void) |
953 | { | |
954 | monitor_output ("The following monitor commands are supported:\n"); | |
955 | monitor_output (" set debug <0|1>\n"); | |
1b3f6016 | 956 | monitor_output (" Enable general debugging messages\n"); |
aa5ca48f DE |
957 | monitor_output (" set debug-hw-points <0|1>\n"); |
958 | monitor_output (" Enable h/w breakpoint/watchpoint debugging messages\n"); | |
c74d0ad8 DJ |
959 | monitor_output (" set remote-debug <0|1>\n"); |
960 | monitor_output (" Enable remote protocol debugging messages\n"); | |
87ce2a04 DE |
961 | monitor_output (" set debug-format option1[,option2,...]\n"); |
962 | monitor_output (" Add additional information to debugging messages\n"); | |
963 | monitor_output (" Options: all, none"); | |
87ce2a04 | 964 | monitor_output (", timestamp"); |
87ce2a04 | 965 | monitor_output ("\n"); |
ecd7ecbc DJ |
966 | monitor_output (" exit\n"); |
967 | monitor_output (" Quit GDBserver\n"); | |
c74d0ad8 DJ |
968 | } |
969 | ||
764880b7 PA |
970 | /* Read trace frame or inferior memory. Returns the number of bytes |
971 | actually read, zero when no further transfer is possible, and -1 on | |
972 | error. Return of a positive value smaller than LEN does not | |
973 | indicate there's no more to be read, only the end of the transfer. | |
974 | E.g., when GDB reads memory from a traceframe, a first request may | |
975 | be served from a memory block that does not cover the whole request | |
976 | length. A following request gets the rest served from either | |
977 | another block (of the same traceframe) or from the read-only | |
978 | regions. */ | |
219f2f23 PA |
979 | |
980 | static int | |
90d74c30 | 981 | gdb_read_memory (CORE_ADDR memaddr, unsigned char *myaddr, int len) |
219f2f23 | 982 | { |
c12a5089 | 983 | client_state &cs = get_client_state (); |
764880b7 | 984 | int res; |
90d74c30 | 985 | |
c12a5089 | 986 | if (cs.current_traceframe >= 0) |
219f2f23 PA |
987 | { |
988 | ULONGEST nbytes; | |
989 | ULONGEST length = len; | |
990 | ||
c12a5089 | 991 | if (traceframe_read_mem (cs.current_traceframe, |
219f2f23 | 992 | memaddr, myaddr, len, &nbytes)) |
9a13b2fa | 993 | return -1; |
219f2f23 | 994 | /* Data read from trace buffer, we're done. */ |
764880b7 PA |
995 | if (nbytes > 0) |
996 | return nbytes; | |
219f2f23 | 997 | if (!in_readonly_region (memaddr, length)) |
764880b7 | 998 | return -1; |
219f2f23 PA |
999 | /* Otherwise we have a valid readonly case, fall through. */ |
1000 | /* (assume no half-trace half-real blocks for now) */ | |
1001 | } | |
1002 | ||
764880b7 PA |
1003 | res = prepare_to_access_memory (); |
1004 | if (res == 0) | |
90d74c30 | 1005 | { |
f557a88a | 1006 | if (set_desired_thread ()) |
f0db101d PA |
1007 | res = read_inferior_memory (memaddr, myaddr, len); |
1008 | else | |
1009 | res = 1; | |
0146f85b | 1010 | done_accessing_memory (); |
90d74c30 | 1011 | |
764880b7 PA |
1012 | return res == 0 ? len : -1; |
1013 | } | |
1014 | else | |
1015 | return -1; | |
219f2f23 PA |
1016 | } |
1017 | ||
1018 | /* Write trace frame or inferior memory. Actually, writing to trace | |
1019 | frames is forbidden. */ | |
1020 | ||
1021 | static int | |
90d74c30 | 1022 | gdb_write_memory (CORE_ADDR memaddr, const unsigned char *myaddr, int len) |
219f2f23 | 1023 | { |
c12a5089 SC |
1024 | client_state &cs = get_client_state (); |
1025 | if (cs.current_traceframe >= 0) | |
219f2f23 PA |
1026 | return EIO; |
1027 | else | |
90d74c30 PA |
1028 | { |
1029 | int ret; | |
1030 | ||
1031 | ret = prepare_to_access_memory (); | |
1032 | if (ret == 0) | |
1033 | { | |
f557a88a | 1034 | if (set_desired_thread ()) |
f0db101d PA |
1035 | ret = write_inferior_memory (memaddr, myaddr, len); |
1036 | else | |
1037 | ret = EIO; | |
0146f85b | 1038 | done_accessing_memory (); |
90d74c30 PA |
1039 | } |
1040 | return ret; | |
1041 | } | |
219f2f23 PA |
1042 | } |
1043 | ||
08388c79 DE |
1044 | /* Subroutine of handle_search_memory to simplify it. */ |
1045 | ||
1046 | static int | |
1047 | handle_search_memory_1 (CORE_ADDR start_addr, CORE_ADDR search_space_len, | |
1048 | gdb_byte *pattern, unsigned pattern_len, | |
1049 | gdb_byte *search_buf, | |
1050 | unsigned chunk_size, unsigned search_buf_size, | |
1051 | CORE_ADDR *found_addrp) | |
1052 | { | |
1053 | /* Prime the search buffer. */ | |
1054 | ||
764880b7 PA |
1055 | if (gdb_read_memory (start_addr, search_buf, search_buf_size) |
1056 | != search_buf_size) | |
08388c79 | 1057 | { |
b3dc46ff AB |
1058 | warning ("Unable to access %ld bytes of target " |
1059 | "memory at 0x%lx, halting search.", | |
1060 | (long) search_buf_size, (long) start_addr); | |
08388c79 DE |
1061 | return -1; |
1062 | } | |
1063 | ||
1064 | /* Perform the search. | |
1065 | ||
1066 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. | |
1067 | When we've scanned N bytes we copy the trailing bytes to the start and | |
1068 | read in another N bytes. */ | |
1069 | ||
1070 | while (search_space_len >= pattern_len) | |
1071 | { | |
1072 | gdb_byte *found_ptr; | |
1073 | unsigned nr_search_bytes = (search_space_len < search_buf_size | |
1074 | ? search_space_len | |
1075 | : search_buf_size); | |
1076 | ||
d6f85c84 SM |
1077 | found_ptr = (gdb_byte *) memmem (search_buf, nr_search_bytes, pattern, |
1078 | pattern_len); | |
08388c79 DE |
1079 | |
1080 | if (found_ptr != NULL) | |
1081 | { | |
1082 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); | |
1083 | *found_addrp = found_addr; | |
1084 | return 1; | |
1085 | } | |
1086 | ||
1087 | /* Not found in this chunk, skip to next chunk. */ | |
1088 | ||
1089 | /* Don't let search_space_len wrap here, it's unsigned. */ | |
1090 | if (search_space_len >= chunk_size) | |
1091 | search_space_len -= chunk_size; | |
1092 | else | |
1093 | search_space_len = 0; | |
1094 | ||
1095 | if (search_space_len >= pattern_len) | |
1096 | { | |
1097 | unsigned keep_len = search_buf_size - chunk_size; | |
8a35fb51 | 1098 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
08388c79 DE |
1099 | int nr_to_read; |
1100 | ||
1101 | /* Copy the trailing part of the previous iteration to the front | |
1102 | of the buffer for the next iteration. */ | |
1103 | memcpy (search_buf, search_buf + chunk_size, keep_len); | |
1104 | ||
1105 | nr_to_read = (search_space_len - keep_len < chunk_size | |
1106 | ? search_space_len - keep_len | |
1107 | : chunk_size); | |
1108 | ||
90d74c30 | 1109 | if (gdb_read_memory (read_addr, search_buf + keep_len, |
764880b7 | 1110 | nr_to_read) != search_buf_size) |
08388c79 | 1111 | { |
b3dc46ff | 1112 | warning ("Unable to access %ld bytes of target memory " |
493e2a69 | 1113 | "at 0x%lx, halting search.", |
b3dc46ff | 1114 | (long) nr_to_read, (long) read_addr); |
08388c79 DE |
1115 | return -1; |
1116 | } | |
1117 | ||
1118 | start_addr += chunk_size; | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | /* Not found. */ | |
1123 | ||
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | /* Handle qSearch:memory packets. */ | |
1128 | ||
1129 | static void | |
1130 | handle_search_memory (char *own_buf, int packet_len) | |
1131 | { | |
1132 | CORE_ADDR start_addr; | |
1133 | CORE_ADDR search_space_len; | |
1134 | gdb_byte *pattern; | |
1135 | unsigned int pattern_len; | |
1136 | /* NOTE: also defined in find.c testcase. */ | |
1137 | #define SEARCH_CHUNK_SIZE 16000 | |
1138 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; | |
1139 | /* Buffer to hold memory contents for searching. */ | |
1140 | gdb_byte *search_buf; | |
1141 | unsigned search_buf_size; | |
1142 | int found; | |
1143 | CORE_ADDR found_addr; | |
1144 | int cmd_name_len = sizeof ("qSearch:memory:") - 1; | |
1145 | ||
224c3ddb | 1146 | pattern = (gdb_byte *) malloc (packet_len); |
08388c79 DE |
1147 | if (pattern == NULL) |
1148 | { | |
5e1471f5 | 1149 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1150 | strcpy (own_buf, "E00"); |
1151 | return; | |
1152 | } | |
1153 | if (decode_search_memory_packet (own_buf + cmd_name_len, | |
1154 | packet_len - cmd_name_len, | |
1155 | &start_addr, &search_space_len, | |
1156 | pattern, &pattern_len) < 0) | |
1157 | { | |
1158 | free (pattern); | |
5e1471f5 | 1159 | error ("Error in parsing qSearch:memory packet"); |
08388c79 DE |
1160 | strcpy (own_buf, "E00"); |
1161 | return; | |
1162 | } | |
1163 | ||
1164 | search_buf_size = chunk_size + pattern_len - 1; | |
1165 | ||
1166 | /* No point in trying to allocate a buffer larger than the search space. */ | |
1167 | if (search_space_len < search_buf_size) | |
1168 | search_buf_size = search_space_len; | |
1169 | ||
224c3ddb | 1170 | search_buf = (gdb_byte *) malloc (search_buf_size); |
08388c79 DE |
1171 | if (search_buf == NULL) |
1172 | { | |
1173 | free (pattern); | |
5e1471f5 | 1174 | error ("Unable to allocate memory to perform the search"); |
08388c79 DE |
1175 | strcpy (own_buf, "E00"); |
1176 | return; | |
1177 | } | |
1178 | ||
1179 | found = handle_search_memory_1 (start_addr, search_space_len, | |
1180 | pattern, pattern_len, | |
1181 | search_buf, chunk_size, search_buf_size, | |
1182 | &found_addr); | |
1183 | ||
1184 | if (found > 0) | |
1185 | sprintf (own_buf, "1,%lx", (long) found_addr); | |
1186 | else if (found == 0) | |
1187 | strcpy (own_buf, "0"); | |
1188 | else | |
1189 | strcpy (own_buf, "E00"); | |
1190 | ||
1191 | free (search_buf); | |
1192 | free (pattern); | |
1193 | } | |
1194 | ||
e8ca139e SM |
1195 | /* Handle the "D" packet. */ |
1196 | ||
1197 | static void | |
1198 | handle_detach (char *own_buf) | |
1199 | { | |
c12a5089 | 1200 | client_state &cs = get_client_state (); |
e8ca139e | 1201 | |
31445d10 | 1202 | process_info *process; |
e8ca139e | 1203 | |
c12a5089 | 1204 | if (cs.multi_process) |
e8ca139e SM |
1205 | { |
1206 | /* skip 'D;' */ | |
31445d10 PA |
1207 | int pid = strtol (&own_buf[2], NULL, 16); |
1208 | ||
1209 | process = find_process_pid (pid); | |
e8ca139e SM |
1210 | } |
1211 | else | |
e8ca139e | 1212 | { |
31445d10 PA |
1213 | process = (current_thread != nullptr |
1214 | ? get_thread_process (current_thread) | |
1215 | : nullptr); | |
1216 | } | |
e8ca139e | 1217 | |
31445d10 PA |
1218 | if (process == NULL) |
1219 | { | |
1220 | write_enn (own_buf); | |
1221 | return; | |
1222 | } | |
e8ca139e | 1223 | |
31445d10 PA |
1224 | if ((tracing && disconnected_tracing) || any_persistent_commands (process)) |
1225 | { | |
e8ca139e SM |
1226 | if (tracing && disconnected_tracing) |
1227 | fprintf (stderr, | |
1228 | "Disconnected tracing in effect, " | |
1229 | "leaving gdbserver attached to the process\n"); | |
1230 | ||
31445d10 | 1231 | if (any_persistent_commands (process)) |
e8ca139e SM |
1232 | fprintf (stderr, |
1233 | "Persistent commands are present, " | |
1234 | "leaving gdbserver attached to the process\n"); | |
1235 | ||
1236 | /* Make sure we're in non-stop/async mode, so we we can both | |
1237 | wait for an async socket accept, and handle async target | |
1238 | events simultaneously. There's also no point either in | |
1239 | having the target stop all threads, when we're going to | |
1240 | pass signals down without informing GDB. */ | |
1241 | if (!non_stop) | |
1242 | { | |
1243 | if (debug_threads) | |
1244 | debug_printf ("Forcing non-stop mode\n"); | |
1245 | ||
1246 | non_stop = 1; | |
1247 | start_non_stop (1); | |
1248 | } | |
1249 | ||
1250 | process->gdb_detached = 1; | |
1251 | ||
1252 | /* Detaching implicitly resumes all threads. */ | |
1253 | target_continue_no_signal (minus_one_ptid); | |
1254 | ||
1255 | write_ok (own_buf); | |
1256 | return; | |
1257 | } | |
1258 | ||
31445d10 | 1259 | fprintf (stderr, "Detaching from process %d\n", process->pid); |
e8ca139e | 1260 | stop_tracing (); |
d105de22 TT |
1261 | |
1262 | /* We'll need this after PROCESS has been destroyed. */ | |
1263 | int pid = process->pid; | |
1264 | ||
ef2ddb33 | 1265 | if (detach_inferior (process) != 0) |
e8ca139e SM |
1266 | write_enn (own_buf); |
1267 | else | |
1268 | { | |
d105de22 | 1269 | discard_queued_stop_replies (ptid_t (pid)); |
e8ca139e SM |
1270 | write_ok (own_buf); |
1271 | ||
1272 | if (extended_protocol || target_running ()) | |
1273 | { | |
1274 | /* There is still at least one inferior remaining or | |
1275 | we are in extended mode, so don't terminate gdbserver, | |
1276 | and instead treat this like a normal program exit. */ | |
c12a5089 SC |
1277 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
1278 | cs.last_status.value.integer = 0; | |
d105de22 | 1279 | cs.last_ptid = ptid_t (pid); |
e8ca139e SM |
1280 | |
1281 | current_thread = NULL; | |
1282 | } | |
1283 | else | |
1284 | { | |
1285 | putpkt (own_buf); | |
1286 | remote_close (); | |
1287 | ||
1288 | /* If we are attached, then we can exit. Otherwise, we | |
1289 | need to hang around doing nothing, until the child is | |
1290 | gone. */ | |
d105de22 | 1291 | join_inferior (pid); |
e8ca139e SM |
1292 | exit (0); |
1293 | } | |
1294 | } | |
1295 | } | |
1296 | ||
87ce2a04 DE |
1297 | /* Parse options to --debug-format= and "monitor set debug-format". |
1298 | ARG is the text after "--debug-format=" or "monitor set debug-format". | |
1299 | IS_MONITOR is non-zero if we're invoked via "monitor set debug-format". | |
1300 | This triggers calls to monitor_output. | |
e80aaf61 SM |
1301 | The result is an empty string if all options were parsed ok, otherwise an |
1302 | error message which the caller must free. | |
87ce2a04 DE |
1303 | |
1304 | N.B. These commands affect all debug format settings, they are not | |
1305 | cumulative. If a format is not specified, it is turned off. | |
1306 | However, we don't go to extra trouble with things like | |
1307 | "monitor set debug-format all,none,timestamp". | |
1308 | Instead we just parse them one at a time, in order. | |
1309 | ||
1310 | The syntax for "monitor set debug" we support here is not identical | |
1311 | to gdb's "set debug foo on|off" because we also use this function to | |
1312 | parse "--debug-format=foo,bar". */ | |
1313 | ||
2cc05030 | 1314 | static std::string |
87ce2a04 DE |
1315 | parse_debug_format_options (const char *arg, int is_monitor) |
1316 | { | |
87ce2a04 DE |
1317 | /* First turn all debug format options off. */ |
1318 | debug_timestamp = 0; | |
1319 | ||
1320 | /* First remove leading spaces, for "monitor set debug-format". */ | |
1321 | while (isspace (*arg)) | |
1322 | ++arg; | |
1323 | ||
e80aaf61 SM |
1324 | std::vector<gdb::unique_xmalloc_ptr<char>> options |
1325 | = delim_string_to_char_ptr_vec (arg, ','); | |
87ce2a04 | 1326 | |
e80aaf61 | 1327 | for (const gdb::unique_xmalloc_ptr<char> &option : options) |
87ce2a04 | 1328 | { |
e80aaf61 | 1329 | if (strcmp (option.get (), "all") == 0) |
87ce2a04 DE |
1330 | { |
1331 | debug_timestamp = 1; | |
1332 | if (is_monitor) | |
1333 | monitor_output ("All extra debug format options enabled.\n"); | |
1334 | } | |
e80aaf61 | 1335 | else if (strcmp (option.get (), "none") == 0) |
87ce2a04 DE |
1336 | { |
1337 | debug_timestamp = 0; | |
1338 | if (is_monitor) | |
1339 | monitor_output ("All extra debug format options disabled.\n"); | |
1340 | } | |
e80aaf61 | 1341 | else if (strcmp (option.get (), "timestamp") == 0) |
87ce2a04 DE |
1342 | { |
1343 | debug_timestamp = 1; | |
1344 | if (is_monitor) | |
1345 | monitor_output ("Timestamps will be added to debug output.\n"); | |
1346 | } | |
87ce2a04 DE |
1347 | else if (*option == '\0') |
1348 | { | |
1349 | /* An empty option, e.g., "--debug-format=foo,,bar", is ignored. */ | |
1350 | continue; | |
1351 | } | |
1352 | else | |
e80aaf61 SM |
1353 | return string_printf ("Unknown debug-format argument: \"%s\"\n", |
1354 | option.get ()); | |
87ce2a04 DE |
1355 | } |
1356 | ||
2cc05030 | 1357 | return std::string (); |
87ce2a04 DE |
1358 | } |
1359 | ||
cdbfd419 PP |
1360 | /* Handle monitor commands not handled by target-specific handlers. */ |
1361 | ||
1362 | static void | |
d73f2619 | 1363 | handle_monitor_command (char *mon, char *own_buf) |
cdbfd419 PP |
1364 | { |
1365 | if (strcmp (mon, "set debug 1") == 0) | |
1366 | { | |
1367 | debug_threads = 1; | |
1368 | monitor_output ("Debug output enabled.\n"); | |
1369 | } | |
1370 | else if (strcmp (mon, "set debug 0") == 0) | |
1371 | { | |
1372 | debug_threads = 0; | |
1373 | monitor_output ("Debug output disabled.\n"); | |
1374 | } | |
1375 | else if (strcmp (mon, "set debug-hw-points 1") == 0) | |
1376 | { | |
c5e92cca | 1377 | show_debug_regs = 1; |
cdbfd419 PP |
1378 | monitor_output ("H/W point debugging output enabled.\n"); |
1379 | } | |
1380 | else if (strcmp (mon, "set debug-hw-points 0") == 0) | |
1381 | { | |
c5e92cca | 1382 | show_debug_regs = 0; |
cdbfd419 PP |
1383 | monitor_output ("H/W point debugging output disabled.\n"); |
1384 | } | |
1385 | else if (strcmp (mon, "set remote-debug 1") == 0) | |
1386 | { | |
1387 | remote_debug = 1; | |
1388 | monitor_output ("Protocol debug output enabled.\n"); | |
1389 | } | |
1390 | else if (strcmp (mon, "set remote-debug 0") == 0) | |
1391 | { | |
1392 | remote_debug = 0; | |
1393 | monitor_output ("Protocol debug output disabled.\n"); | |
1394 | } | |
61012eef | 1395 | else if (startswith (mon, "set debug-format ")) |
87ce2a04 | 1396 | { |
2cc05030 | 1397 | std::string error_msg |
87ce2a04 DE |
1398 | = parse_debug_format_options (mon + sizeof ("set debug-format ") - 1, |
1399 | 1); | |
1400 | ||
2cc05030 | 1401 | if (!error_msg.empty ()) |
87ce2a04 | 1402 | { |
2cc05030 | 1403 | monitor_output (error_msg.c_str ()); |
87ce2a04 DE |
1404 | monitor_show_help (); |
1405 | write_enn (own_buf); | |
87ce2a04 DE |
1406 | } |
1407 | } | |
cdbfd419 PP |
1408 | else if (strcmp (mon, "help") == 0) |
1409 | monitor_show_help (); | |
1410 | else if (strcmp (mon, "exit") == 0) | |
1411 | exit_requested = 1; | |
1412 | else | |
1413 | { | |
1414 | monitor_output ("Unknown monitor command.\n\n"); | |
1415 | monitor_show_help (); | |
1416 | write_enn (own_buf); | |
1417 | } | |
1418 | } | |
1419 | ||
d08aafef PA |
1420 | /* Associates a callback with each supported qXfer'able object. */ |
1421 | ||
1422 | struct qxfer | |
1423 | { | |
1424 | /* The object this handler handles. */ | |
1425 | const char *object; | |
1426 | ||
1427 | /* Request that the target transfer up to LEN 8-bit bytes of the | |
1428 | target's OBJECT. The OFFSET, for a seekable object, specifies | |
1429 | the starting point. The ANNEX can be used to provide additional | |
1430 | data-specific information to the target. | |
1431 | ||
1432 | Return the number of bytes actually transfered, zero when no | |
5cc22e4c MM |
1433 | further transfer is possible, -1 on error, -2 when the transfer |
1434 | is not supported, and -3 on a verbose error message that should | |
1435 | be preserved. Return of a positive value smaller than LEN does | |
1436 | not indicate the end of the object, only the end of the transfer. | |
d08aafef PA |
1437 | |
1438 | One, and only one, of readbuf or writebuf must be non-NULL. */ | |
1439 | int (*xfer) (const char *annex, | |
1440 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1441 | ULONGEST offset, LONGEST len); | |
1442 | }; | |
1443 | ||
1444 | /* Handle qXfer:auxv:read. */ | |
1445 | ||
1446 | static int | |
1447 | handle_qxfer_auxv (const char *annex, | |
1448 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1449 | ULONGEST offset, LONGEST len) | |
1450 | { | |
1451 | if (the_target->read_auxv == NULL || writebuf != NULL) | |
1452 | return -2; | |
1453 | ||
f0db101d | 1454 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1455 | return -1; |
1456 | ||
1457 | return (*the_target->read_auxv) (offset, readbuf, len); | |
1458 | } | |
1459 | ||
e57f1de3 GB |
1460 | /* Handle qXfer:exec-file:read. */ |
1461 | ||
1462 | static int | |
256642e8 | 1463 | handle_qxfer_exec_file (const char *annex, |
e57f1de3 GB |
1464 | gdb_byte *readbuf, const gdb_byte *writebuf, |
1465 | ULONGEST offset, LONGEST len) | |
1466 | { | |
835205d0 | 1467 | char *file; |
e57f1de3 GB |
1468 | ULONGEST pid; |
1469 | int total_len; | |
1470 | ||
1471 | if (the_target->pid_to_exec_file == NULL || writebuf != NULL) | |
1472 | return -2; | |
1473 | ||
256642e8 | 1474 | if (annex[0] == '\0') |
835205d0 GB |
1475 | { |
1476 | if (current_thread == NULL) | |
1477 | return -1; | |
1478 | ||
1479 | pid = pid_of (current_thread); | |
1480 | } | |
1481 | else | |
1482 | { | |
835205d0 | 1483 | annex = unpack_varlen_hex (annex, &pid); |
835205d0 GB |
1484 | if (annex[0] != '\0') |
1485 | return -1; | |
1486 | } | |
1487 | ||
1488 | if (pid <= 0) | |
e57f1de3 GB |
1489 | return -1; |
1490 | ||
1491 | file = (*the_target->pid_to_exec_file) (pid); | |
1492 | if (file == NULL) | |
1493 | return -1; | |
1494 | ||
1495 | total_len = strlen (file); | |
1496 | ||
1497 | if (offset > total_len) | |
1498 | return -1; | |
1499 | ||
1500 | if (offset + len > total_len) | |
1501 | len = total_len - offset; | |
1502 | ||
1503 | memcpy (readbuf, file + offset, len); | |
1504 | return len; | |
1505 | } | |
1506 | ||
d08aafef PA |
1507 | /* Handle qXfer:features:read. */ |
1508 | ||
1509 | static int | |
1510 | handle_qxfer_features (const char *annex, | |
1511 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1512 | ULONGEST offset, LONGEST len) | |
1513 | { | |
1514 | const char *document; | |
1515 | size_t total_len; | |
1516 | ||
1517 | if (writebuf != NULL) | |
1518 | return -2; | |
1519 | ||
1520 | if (!target_running ()) | |
1521 | return -1; | |
1522 | ||
1523 | /* Grab the correct annex. */ | |
1524 | document = get_features_xml (annex); | |
1525 | if (document == NULL) | |
1526 | return -1; | |
1527 | ||
1528 | total_len = strlen (document); | |
1529 | ||
1530 | if (offset > total_len) | |
1531 | return -1; | |
1532 | ||
1533 | if (offset + len > total_len) | |
1534 | len = total_len - offset; | |
1535 | ||
1536 | memcpy (readbuf, document + offset, len); | |
1537 | return len; | |
1538 | } | |
1539 | ||
1540 | /* Handle qXfer:libraries:read. */ | |
1541 | ||
1542 | static int | |
1543 | handle_qxfer_libraries (const char *annex, | |
1544 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1545 | ULONGEST offset, LONGEST len) | |
1546 | { | |
d08aafef PA |
1547 | if (writebuf != NULL) |
1548 | return -2; | |
1549 | ||
f0db101d | 1550 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1551 | return -1; |
1552 | ||
04fd3ba9 | 1553 | std::string document = "<library-list version=\"1.0\">\n"; |
d08aafef | 1554 | |
c9cb8905 SM |
1555 | for (const dll_info &dll : all_dlls) |
1556 | document += string_printf | |
1557 | (" <library name=\"%s\"><segment address=\"0x%lx\"/></library>\n", | |
1558 | dll.name.c_str (), (long) dll.base_addr); | |
d08aafef | 1559 | |
04fd3ba9 | 1560 | document += "</library-list>\n"; |
d08aafef | 1561 | |
04fd3ba9 SM |
1562 | if (offset > document.length ()) |
1563 | return -1; | |
d08aafef | 1564 | |
04fd3ba9 SM |
1565 | if (offset + len > document.length ()) |
1566 | len = document.length () - offset; | |
d08aafef | 1567 | |
04fd3ba9 | 1568 | memcpy (readbuf, &document[offset], len); |
d08aafef | 1569 | |
d08aafef PA |
1570 | return len; |
1571 | } | |
1572 | ||
2268b414 JK |
1573 | /* Handle qXfer:libraries-svr4:read. */ |
1574 | ||
1575 | static int | |
1576 | handle_qxfer_libraries_svr4 (const char *annex, | |
1577 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1578 | ULONGEST offset, LONGEST len) | |
1579 | { | |
1580 | if (writebuf != NULL) | |
1581 | return -2; | |
1582 | ||
f0db101d | 1583 | if (current_thread == NULL || the_target->qxfer_libraries_svr4 == NULL) |
2268b414 JK |
1584 | return -1; |
1585 | ||
1586 | return the_target->qxfer_libraries_svr4 (annex, readbuf, writebuf, offset, len); | |
1587 | } | |
1588 | ||
d08aafef PA |
1589 | /* Handle qXfer:osadata:read. */ |
1590 | ||
1591 | static int | |
1592 | handle_qxfer_osdata (const char *annex, | |
1593 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1594 | ULONGEST offset, LONGEST len) | |
1595 | { | |
1596 | if (the_target->qxfer_osdata == NULL || writebuf != NULL) | |
1597 | return -2; | |
1598 | ||
1599 | return (*the_target->qxfer_osdata) (annex, readbuf, NULL, offset, len); | |
1600 | } | |
1601 | ||
1602 | /* Handle qXfer:siginfo:read and qXfer:siginfo:write. */ | |
1603 | ||
1604 | static int | |
1605 | handle_qxfer_siginfo (const char *annex, | |
1606 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1607 | ULONGEST offset, LONGEST len) | |
1608 | { | |
1609 | if (the_target->qxfer_siginfo == NULL) | |
1610 | return -2; | |
1611 | ||
f0db101d | 1612 | if (annex[0] != '\0' || current_thread == NULL) |
d08aafef PA |
1613 | return -1; |
1614 | ||
1615 | return (*the_target->qxfer_siginfo) (annex, readbuf, writebuf, offset, len); | |
1616 | } | |
1617 | ||
1618 | /* Handle qXfer:spu:read and qXfer:spu:write. */ | |
1619 | ||
1620 | static int | |
1621 | handle_qxfer_spu (const char *annex, | |
1622 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1623 | ULONGEST offset, LONGEST len) | |
1624 | { | |
1625 | if (the_target->qxfer_spu == NULL) | |
1626 | return -2; | |
1627 | ||
f0db101d | 1628 | if (current_thread == NULL) |
d08aafef PA |
1629 | return -1; |
1630 | ||
1631 | return (*the_target->qxfer_spu) (annex, readbuf, writebuf, offset, len); | |
1632 | } | |
1633 | ||
1634 | /* Handle qXfer:statictrace:read. */ | |
1635 | ||
1636 | static int | |
1637 | handle_qxfer_statictrace (const char *annex, | |
1638 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1639 | ULONGEST offset, LONGEST len) | |
1640 | { | |
c12a5089 | 1641 | client_state &cs = get_client_state (); |
d08aafef PA |
1642 | ULONGEST nbytes; |
1643 | ||
1644 | if (writebuf != NULL) | |
1645 | return -2; | |
1646 | ||
c12a5089 SC |
1647 | if (annex[0] != '\0' || current_thread == NULL |
1648 | || cs.current_traceframe == -1) | |
d08aafef PA |
1649 | return -1; |
1650 | ||
c12a5089 | 1651 | if (traceframe_read_sdata (cs.current_traceframe, offset, |
d08aafef PA |
1652 | readbuf, len, &nbytes)) |
1653 | return -1; | |
1654 | return nbytes; | |
1655 | } | |
1656 | ||
649ebbca DE |
1657 | /* Helper for handle_qxfer_threads_proper. |
1658 | Emit the XML to describe the thread of INF. */ | |
d08aafef | 1659 | |
dc146f7c | 1660 | static void |
c0e15c9b | 1661 | handle_qxfer_threads_worker (thread_info *thread, struct buffer *buffer) |
dc146f7c | 1662 | { |
124aceb4 | 1663 | ptid_t ptid = ptid_of (thread); |
649ebbca DE |
1664 | char ptid_s[100]; |
1665 | int core = target_core_of_thread (ptid); | |
1666 | char core_s[21]; | |
79efa585 | 1667 | const char *name = target_thread_name (ptid); |
f6327dcb KB |
1668 | int handle_len; |
1669 | gdb_byte *handle; | |
1670 | bool handle_status = target_thread_handle (ptid, &handle, &handle_len); | |
dc146f7c | 1671 | |
649ebbca | 1672 | write_ptid (ptid_s, ptid); |
dc146f7c | 1673 | |
79efa585 SM |
1674 | buffer_xml_printf (buffer, "<thread id=\"%s\"", ptid_s); |
1675 | ||
649ebbca | 1676 | if (core != -1) |
dc146f7c | 1677 | { |
649ebbca | 1678 | sprintf (core_s, "%d", core); |
79efa585 | 1679 | buffer_xml_printf (buffer, " core=\"%s\"", core_s); |
649ebbca | 1680 | } |
79efa585 SM |
1681 | |
1682 | if (name != NULL) | |
1683 | buffer_xml_printf (buffer, " name=\"%s\"", name); | |
1684 | ||
f6327dcb KB |
1685 | if (handle_status) |
1686 | { | |
1687 | char *handle_s = (char *) alloca (handle_len * 2 + 1); | |
1688 | bin2hex (handle, handle_s, handle_len); | |
1689 | buffer_xml_printf (buffer, " handle=\"%s\"", handle_s); | |
1690 | } | |
1691 | ||
79efa585 | 1692 | buffer_xml_printf (buffer, "/>\n"); |
649ebbca | 1693 | } |
dc146f7c | 1694 | |
649ebbca | 1695 | /* Helper for handle_qxfer_threads. */ |
dc146f7c | 1696 | |
649ebbca DE |
1697 | static void |
1698 | handle_qxfer_threads_proper (struct buffer *buffer) | |
1699 | { | |
1700 | buffer_grow_str (buffer, "<threads>\n"); | |
1701 | ||
c0e15c9b SM |
1702 | for_each_thread ([&] (thread_info *thread) |
1703 | { | |
1704 | handle_qxfer_threads_worker (thread, buffer); | |
1705 | }); | |
dc146f7c VP |
1706 | |
1707 | buffer_grow_str0 (buffer, "</threads>\n"); | |
1708 | } | |
1709 | ||
d08aafef PA |
1710 | /* Handle qXfer:threads:read. */ |
1711 | ||
dc146f7c | 1712 | static int |
d08aafef PA |
1713 | handle_qxfer_threads (const char *annex, |
1714 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1715 | ULONGEST offset, LONGEST len) | |
dc146f7c VP |
1716 | { |
1717 | static char *result = 0; | |
1718 | static unsigned int result_length = 0; | |
1719 | ||
d08aafef PA |
1720 | if (writebuf != NULL) |
1721 | return -2; | |
1722 | ||
f0db101d | 1723 | if (annex[0] != '\0') |
d08aafef | 1724 | return -1; |
dc146f7c VP |
1725 | |
1726 | if (offset == 0) | |
1727 | { | |
1728 | struct buffer buffer; | |
1729 | /* When asked for data at offset 0, generate everything and store into | |
1730 | 'result'. Successive reads will be served off 'result'. */ | |
1731 | if (result) | |
1732 | free (result); | |
1733 | ||
1734 | buffer_init (&buffer); | |
1735 | ||
d08aafef | 1736 | handle_qxfer_threads_proper (&buffer); |
dc146f7c VP |
1737 | |
1738 | result = buffer_finish (&buffer); | |
1739 | result_length = strlen (result); | |
1740 | buffer_free (&buffer); | |
1741 | } | |
1742 | ||
1743 | if (offset >= result_length) | |
1744 | { | |
1745 | /* We're out of data. */ | |
1746 | free (result); | |
1747 | result = NULL; | |
1748 | result_length = 0; | |
1749 | return 0; | |
1750 | } | |
1751 | ||
d08aafef PA |
1752 | if (len > result_length - offset) |
1753 | len = result_length - offset; | |
1754 | ||
1755 | memcpy (readbuf, result + offset, len); | |
1756 | ||
1757 | return len; | |
1758 | } | |
1759 | ||
b3b9301e PA |
1760 | /* Handle qXfer:traceframe-info:read. */ |
1761 | ||
1762 | static int | |
1763 | handle_qxfer_traceframe_info (const char *annex, | |
1764 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1765 | ULONGEST offset, LONGEST len) | |
1766 | { | |
c12a5089 | 1767 | client_state &cs = get_client_state (); |
b3b9301e PA |
1768 | static char *result = 0; |
1769 | static unsigned int result_length = 0; | |
1770 | ||
1771 | if (writebuf != NULL) | |
1772 | return -2; | |
1773 | ||
c12a5089 | 1774 | if (!target_running () || annex[0] != '\0' || cs.current_traceframe == -1) |
b3b9301e PA |
1775 | return -1; |
1776 | ||
1777 | if (offset == 0) | |
1778 | { | |
1779 | struct buffer buffer; | |
1780 | ||
1781 | /* When asked for data at offset 0, generate everything and | |
1782 | store into 'result'. Successive reads will be served off | |
1783 | 'result'. */ | |
1784 | free (result); | |
1785 | ||
1786 | buffer_init (&buffer); | |
1787 | ||
c12a5089 | 1788 | traceframe_read_info (cs.current_traceframe, &buffer); |
b3b9301e PA |
1789 | |
1790 | result = buffer_finish (&buffer); | |
1791 | result_length = strlen (result); | |
1792 | buffer_free (&buffer); | |
1793 | } | |
1794 | ||
1795 | if (offset >= result_length) | |
1796 | { | |
1797 | /* We're out of data. */ | |
1798 | free (result); | |
1799 | result = NULL; | |
1800 | result_length = 0; | |
1801 | return 0; | |
1802 | } | |
1803 | ||
1804 | if (len > result_length - offset) | |
1805 | len = result_length - offset; | |
1806 | ||
1807 | memcpy (readbuf, result + offset, len); | |
1808 | return len; | |
1809 | } | |
1810 | ||
78d85199 YQ |
1811 | /* Handle qXfer:fdpic:read. */ |
1812 | ||
1813 | static int | |
1814 | handle_qxfer_fdpic (const char *annex, gdb_byte *readbuf, | |
1815 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) | |
1816 | { | |
1817 | if (the_target->read_loadmap == NULL) | |
1818 | return -2; | |
1819 | ||
f0db101d | 1820 | if (current_thread == NULL) |
78d85199 YQ |
1821 | return -1; |
1822 | ||
1823 | return (*the_target->read_loadmap) (annex, offset, readbuf, len); | |
1824 | } | |
1825 | ||
9accd112 MM |
1826 | /* Handle qXfer:btrace:read. */ |
1827 | ||
1828 | static int | |
1829 | handle_qxfer_btrace (const char *annex, | |
1830 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1831 | ULONGEST offset, LONGEST len) | |
1832 | { | |
c12a5089 | 1833 | client_state &cs = get_client_state (); |
9accd112 MM |
1834 | static struct buffer cache; |
1835 | struct thread_info *thread; | |
add67df8 PA |
1836 | enum btrace_read_type type; |
1837 | int result; | |
9accd112 | 1838 | |
b1223e78 | 1839 | if (writebuf != NULL) |
9accd112 MM |
1840 | return -2; |
1841 | ||
d7e15655 TT |
1842 | if (cs.general_thread == null_ptid |
1843 | || cs.general_thread == minus_one_ptid) | |
9accd112 | 1844 | { |
c12a5089 | 1845 | strcpy (cs.own_buf, "E.Must select a single thread."); |
9accd112 MM |
1846 | return -3; |
1847 | } | |
1848 | ||
c12a5089 | 1849 | thread = find_thread_ptid (cs.general_thread); |
9accd112 MM |
1850 | if (thread == NULL) |
1851 | { | |
c12a5089 | 1852 | strcpy (cs.own_buf, "E.No such thread."); |
9accd112 MM |
1853 | return -3; |
1854 | } | |
1855 | ||
1856 | if (thread->btrace == NULL) | |
1857 | { | |
c12a5089 | 1858 | strcpy (cs.own_buf, "E.Btrace not enabled."); |
9accd112 MM |
1859 | return -3; |
1860 | } | |
1861 | ||
1862 | if (strcmp (annex, "all") == 0) | |
864089d2 | 1863 | type = BTRACE_READ_ALL; |
9accd112 | 1864 | else if (strcmp (annex, "new") == 0) |
864089d2 | 1865 | type = BTRACE_READ_NEW; |
969c39fb MM |
1866 | else if (strcmp (annex, "delta") == 0) |
1867 | type = BTRACE_READ_DELTA; | |
9accd112 MM |
1868 | else |
1869 | { | |
c12a5089 | 1870 | strcpy (cs.own_buf, "E.Bad annex."); |
9accd112 MM |
1871 | return -3; |
1872 | } | |
1873 | ||
1874 | if (offset == 0) | |
1875 | { | |
1876 | buffer_free (&cache); | |
1877 | ||
a70b8144 | 1878 | try |
b1223e78 MM |
1879 | { |
1880 | result = target_read_btrace (thread->btrace, &cache, type); | |
1881 | if (result != 0) | |
c12a5089 | 1882 | memcpy (cs.own_buf, cache.buffer, cache.used_size); |
b1223e78 | 1883 | } |
a70b8144 | 1884 | catch (const gdb_exception_RETURN_MASK_ERROR &exception) |
969c39fb | 1885 | { |
3d6e9d23 | 1886 | sprintf (cs.own_buf, "E.%s", exception.what ()); |
b1223e78 | 1887 | result = -1; |
969c39fb | 1888 | } |
b1223e78 MM |
1889 | |
1890 | if (result != 0) | |
1891 | return -3; | |
9accd112 MM |
1892 | } |
1893 | else if (offset > cache.used_size) | |
1894 | { | |
1895 | buffer_free (&cache); | |
1896 | return -3; | |
1897 | } | |
1898 | ||
1899 | if (len > cache.used_size - offset) | |
1900 | len = cache.used_size - offset; | |
1901 | ||
1902 | memcpy (readbuf, cache.buffer + offset, len); | |
1903 | ||
1904 | return len; | |
1905 | } | |
1906 | ||
f4abbc16 MM |
1907 | /* Handle qXfer:btrace-conf:read. */ |
1908 | ||
1909 | static int | |
1910 | handle_qxfer_btrace_conf (const char *annex, | |
1911 | gdb_byte *readbuf, const gdb_byte *writebuf, | |
1912 | ULONGEST offset, LONGEST len) | |
1913 | { | |
c12a5089 | 1914 | client_state &cs = get_client_state (); |
f4abbc16 MM |
1915 | static struct buffer cache; |
1916 | struct thread_info *thread; | |
1917 | int result; | |
1918 | ||
b1223e78 | 1919 | if (writebuf != NULL) |
f4abbc16 MM |
1920 | return -2; |
1921 | ||
f0db101d | 1922 | if (annex[0] != '\0') |
f4abbc16 MM |
1923 | return -1; |
1924 | ||
d7e15655 TT |
1925 | if (cs.general_thread == null_ptid |
1926 | || cs.general_thread == minus_one_ptid) | |
f4abbc16 | 1927 | { |
c12a5089 | 1928 | strcpy (cs.own_buf, "E.Must select a single thread."); |
f4abbc16 MM |
1929 | return -3; |
1930 | } | |
1931 | ||
c12a5089 | 1932 | thread = find_thread_ptid (cs.general_thread); |
f4abbc16 MM |
1933 | if (thread == NULL) |
1934 | { | |
c12a5089 | 1935 | strcpy (cs.own_buf, "E.No such thread."); |
f4abbc16 MM |
1936 | return -3; |
1937 | } | |
1938 | ||
1939 | if (thread->btrace == NULL) | |
1940 | { | |
c12a5089 | 1941 | strcpy (cs.own_buf, "E.Btrace not enabled."); |
f4abbc16 MM |
1942 | return -3; |
1943 | } | |
1944 | ||
1945 | if (offset == 0) | |
1946 | { | |
1947 | buffer_free (&cache); | |
1948 | ||
a70b8144 | 1949 | try |
b1223e78 MM |
1950 | { |
1951 | result = target_read_btrace_conf (thread->btrace, &cache); | |
1952 | if (result != 0) | |
c12a5089 | 1953 | memcpy (cs.own_buf, cache.buffer, cache.used_size); |
b1223e78 | 1954 | } |
a70b8144 | 1955 | catch (const gdb_exception_RETURN_MASK_ERROR &exception) |
f4abbc16 | 1956 | { |
3d6e9d23 | 1957 | sprintf (cs.own_buf, "E.%s", exception.what ()); |
b1223e78 | 1958 | result = -1; |
f4abbc16 | 1959 | } |
b1223e78 MM |
1960 | |
1961 | if (result != 0) | |
1962 | return -3; | |
f4abbc16 MM |
1963 | } |
1964 | else if (offset > cache.used_size) | |
1965 | { | |
1966 | buffer_free (&cache); | |
1967 | return -3; | |
1968 | } | |
1969 | ||
1970 | if (len > cache.used_size - offset) | |
1971 | len = cache.used_size - offset; | |
1972 | ||
1973 | memcpy (readbuf, cache.buffer + offset, len); | |
1974 | ||
1975 | return len; | |
1976 | } | |
1977 | ||
d08aafef PA |
1978 | static const struct qxfer qxfer_packets[] = |
1979 | { | |
1980 | { "auxv", handle_qxfer_auxv }, | |
9accd112 | 1981 | { "btrace", handle_qxfer_btrace }, |
f4abbc16 | 1982 | { "btrace-conf", handle_qxfer_btrace_conf }, |
e57f1de3 | 1983 | { "exec-file", handle_qxfer_exec_file}, |
78d85199 | 1984 | { "fdpic", handle_qxfer_fdpic}, |
d08aafef PA |
1985 | { "features", handle_qxfer_features }, |
1986 | { "libraries", handle_qxfer_libraries }, | |
2268b414 | 1987 | { "libraries-svr4", handle_qxfer_libraries_svr4 }, |
d08aafef PA |
1988 | { "osdata", handle_qxfer_osdata }, |
1989 | { "siginfo", handle_qxfer_siginfo }, | |
1990 | { "spu", handle_qxfer_spu }, | |
1991 | { "statictrace", handle_qxfer_statictrace }, | |
1992 | { "threads", handle_qxfer_threads }, | |
b3b9301e | 1993 | { "traceframe-info", handle_qxfer_traceframe_info }, |
d08aafef PA |
1994 | }; |
1995 | ||
1996 | static int | |
1997 | handle_qxfer (char *own_buf, int packet_len, int *new_packet_len_p) | |
1998 | { | |
1999 | int i; | |
2000 | char *object; | |
2001 | char *rw; | |
2002 | char *annex; | |
2003 | char *offset; | |
2004 | ||
61012eef | 2005 | if (!startswith (own_buf, "qXfer:")) |
d08aafef PA |
2006 | return 0; |
2007 | ||
2008 | /* Grab the object, r/w and annex. */ | |
2009 | if (decode_xfer (own_buf + 6, &object, &rw, &annex, &offset) < 0) | |
2010 | { | |
2011 | write_enn (own_buf); | |
2012 | return 1; | |
2013 | } | |
2014 | ||
2015 | for (i = 0; | |
2016 | i < sizeof (qxfer_packets) / sizeof (qxfer_packets[0]); | |
2017 | i++) | |
2018 | { | |
2019 | const struct qxfer *q = &qxfer_packets[i]; | |
2020 | ||
2021 | if (strcmp (object, q->object) == 0) | |
2022 | { | |
2023 | if (strcmp (rw, "read") == 0) | |
2024 | { | |
2025 | unsigned char *data; | |
2026 | int n; | |
2027 | CORE_ADDR ofs; | |
2028 | unsigned int len; | |
2029 | ||
2030 | /* Grab the offset and length. */ | |
2031 | if (decode_xfer_read (offset, &ofs, &len) < 0) | |
2032 | { | |
2033 | write_enn (own_buf); | |
2034 | return 1; | |
2035 | } | |
2036 | ||
2037 | /* Read one extra byte, as an indicator of whether there is | |
2038 | more. */ | |
2039 | if (len > PBUFSIZ - 2) | |
2040 | len = PBUFSIZ - 2; | |
224c3ddb | 2041 | data = (unsigned char *) malloc (len + 1); |
d08aafef PA |
2042 | if (data == NULL) |
2043 | { | |
2044 | write_enn (own_buf); | |
2045 | return 1; | |
2046 | } | |
2047 | n = (*q->xfer) (annex, data, NULL, ofs, len + 1); | |
2048 | if (n == -2) | |
2049 | { | |
2050 | free (data); | |
2051 | return 0; | |
2052 | } | |
5cc22e4c MM |
2053 | else if (n == -3) |
2054 | { | |
2055 | /* Preserve error message. */ | |
2056 | } | |
d08aafef PA |
2057 | else if (n < 0) |
2058 | write_enn (own_buf); | |
2059 | else if (n > len) | |
2060 | *new_packet_len_p = write_qxfer_response (own_buf, data, len, 1); | |
2061 | else | |
2062 | *new_packet_len_p = write_qxfer_response (own_buf, data, n, 0); | |
2063 | ||
2064 | free (data); | |
2065 | return 1; | |
2066 | } | |
2067 | else if (strcmp (rw, "write") == 0) | |
2068 | { | |
2069 | int n; | |
2070 | unsigned int len; | |
2071 | CORE_ADDR ofs; | |
2072 | unsigned char *data; | |
2073 | ||
2074 | strcpy (own_buf, "E00"); | |
224c3ddb | 2075 | data = (unsigned char *) malloc (packet_len - (offset - own_buf)); |
d08aafef PA |
2076 | if (data == NULL) |
2077 | { | |
2078 | write_enn (own_buf); | |
2079 | return 1; | |
2080 | } | |
2081 | if (decode_xfer_write (offset, packet_len - (offset - own_buf), | |
2082 | &ofs, &len, data) < 0) | |
2083 | { | |
2084 | free (data); | |
2085 | write_enn (own_buf); | |
2086 | return 1; | |
2087 | } | |
2088 | ||
2089 | n = (*q->xfer) (annex, NULL, data, ofs, len); | |
2090 | if (n == -2) | |
2091 | { | |
2092 | free (data); | |
2093 | return 0; | |
2094 | } | |
5cc22e4c MM |
2095 | else if (n == -3) |
2096 | { | |
2097 | /* Preserve error message. */ | |
2098 | } | |
d08aafef PA |
2099 | else if (n < 0) |
2100 | write_enn (own_buf); | |
2101 | else | |
2102 | sprintf (own_buf, "%x", n); | |
dc146f7c | 2103 | |
d08aafef PA |
2104 | free (data); |
2105 | return 1; | |
2106 | } | |
dc146f7c | 2107 | |
d08aafef PA |
2108 | return 0; |
2109 | } | |
2110 | } | |
dc146f7c | 2111 | |
d08aafef | 2112 | return 0; |
dc146f7c VP |
2113 | } |
2114 | ||
30ba68cb MS |
2115 | /* Compute 32 bit CRC from inferior memory. |
2116 | ||
2117 | On success, return 32 bit CRC. | |
2118 | On failure, return (unsigned long long) -1. */ | |
2119 | ||
2120 | static unsigned long long | |
2121 | crc32 (CORE_ADDR base, int len, unsigned int crc) | |
2122 | { | |
30ba68cb MS |
2123 | while (len--) |
2124 | { | |
2125 | unsigned char byte = 0; | |
2126 | ||
2127 | /* Return failure if memory read fails. */ | |
2128 | if (read_inferior_memory (base, &byte, 1) != 0) | |
2129 | return (unsigned long long) -1; | |
2130 | ||
65da7f14 | 2131 | crc = xcrc32 (&byte, 1, crc); |
30ba68cb MS |
2132 | base++; |
2133 | } | |
2134 | return (unsigned long long) crc; | |
2135 | } | |
2136 | ||
043c3577 MM |
2137 | /* Add supported btrace packets to BUF. */ |
2138 | ||
2139 | static void | |
2140 | supported_btrace_packets (char *buf) | |
2141 | { | |
de6242d3 MM |
2142 | strcat (buf, ";Qbtrace:bts+"); |
2143 | strcat (buf, ";Qbtrace-conf:bts:size+"); | |
2144 | strcat (buf, ";Qbtrace:pt+"); | |
2145 | strcat (buf, ";Qbtrace-conf:pt:size+"); | |
043c3577 MM |
2146 | strcat (buf, ";Qbtrace:off+"); |
2147 | strcat (buf, ";qXfer:btrace:read+"); | |
f4abbc16 | 2148 | strcat (buf, ";qXfer:btrace-conf:read+"); |
043c3577 MM |
2149 | } |
2150 | ||
ce3a066d | 2151 | /* Handle all of the extended 'q' packets. */ |
d08aafef | 2152 | |
5b3da067 | 2153 | static void |
0e7f50da | 2154 | handle_query (char *own_buf, int packet_len, int *new_packet_len_p) |
ce3a066d | 2155 | { |
c12a5089 | 2156 | client_state &cs = get_client_state (); |
9c80ecd6 | 2157 | static std::list<thread_info *>::const_iterator thread_iter; |
0d62e5e8 | 2158 | |
bb63802a | 2159 | /* Reply the current thread id. */ |
db42f210 | 2160 | if (strcmp ("qC", own_buf) == 0 && !disable_packet_qC) |
bb63802a | 2161 | { |
124aceb4 | 2162 | ptid_t ptid; |
f8a4e119 | 2163 | require_running_or_return (own_buf); |
bd99dc85 | 2164 | |
c12a5089 SC |
2165 | if (cs.general_thread != null_ptid && cs.general_thread != minus_one_ptid) |
2166 | ptid = cs.general_thread; | |
bd99dc85 PA |
2167 | else |
2168 | { | |
9c80ecd6 SM |
2169 | thread_iter = all_threads.begin (); |
2170 | ptid = (*thread_iter)->id; | |
bd99dc85 PA |
2171 | } |
2172 | ||
95954743 PA |
2173 | sprintf (own_buf, "QC"); |
2174 | own_buf += 2; | |
124aceb4 | 2175 | write_ptid (own_buf, ptid); |
bb63802a UW |
2176 | return; |
2177 | } | |
2178 | ||
ce3a066d DJ |
2179 | if (strcmp ("qSymbol::", own_buf) == 0) |
2180 | { | |
34c65914 PA |
2181 | struct thread_info *save_thread = current_thread; |
2182 | ||
2183 | /* For qSymbol, GDB only changes the current thread if the | |
2184 | previous current thread was of a different process. So if | |
2185 | the previous thread is gone, we need to pick another one of | |
2186 | the same process. This can happen e.g., if we followed an | |
2187 | exec in a non-leader thread. */ | |
2188 | if (current_thread == NULL) | |
2189 | { | |
2190 | current_thread | |
e99b03dc | 2191 | = find_any_thread_of_pid (cs.general_thread.pid ()); |
34c65914 PA |
2192 | |
2193 | /* Just in case, if we didn't find a thread, then bail out | |
2194 | instead of crashing. */ | |
2195 | if (current_thread == NULL) | |
2196 | { | |
2197 | write_enn (own_buf); | |
2198 | current_thread = save_thread; | |
2199 | return; | |
2200 | } | |
2201 | } | |
2202 | ||
d3bbe7a0 PA |
2203 | /* GDB is suggesting new symbols have been loaded. This may |
2204 | mean a new shared library has been detected as loaded, so | |
2205 | take the opportunity to check if breakpoints we think are | |
2206 | inserted, still are. Note that it isn't guaranteed that | |
2207 | we'll see this when a shared library is loaded, and nor will | |
2208 | we see this for unloads (although breakpoints in unloaded | |
2209 | libraries shouldn't trigger), as GDB may not find symbols for | |
2210 | the library at all. We also re-validate breakpoints when we | |
2211 | see a second GDB breakpoint for the same address, and or when | |
2212 | we access breakpoint shadows. */ | |
2213 | validate_breakpoints (); | |
2214 | ||
fa593d66 PA |
2215 | if (target_supports_tracepoints ()) |
2216 | tracepoint_look_up_symbols (); | |
2217 | ||
f0db101d | 2218 | if (current_thread != NULL && the_target->look_up_symbols != NULL) |
2f2893d9 DJ |
2219 | (*the_target->look_up_symbols) (); |
2220 | ||
34c65914 PA |
2221 | current_thread = save_thread; |
2222 | ||
ce3a066d DJ |
2223 | strcpy (own_buf, "OK"); |
2224 | return; | |
2225 | } | |
2226 | ||
db42f210 | 2227 | if (!disable_packet_qfThreadInfo) |
0d62e5e8 | 2228 | { |
db42f210 | 2229 | if (strcmp ("qfThreadInfo", own_buf) == 0) |
0d62e5e8 | 2230 | { |
f8a4e119 | 2231 | require_running_or_return (own_buf); |
9c80ecd6 | 2232 | thread_iter = all_threads.begin (); |
95954743 PA |
2233 | |
2234 | *own_buf++ = 'm'; | |
9c80ecd6 SM |
2235 | ptid_t ptid = (*thread_iter)->id; |
2236 | write_ptid (own_buf, ptid); | |
2237 | thread_iter++; | |
0d62e5e8 DJ |
2238 | return; |
2239 | } | |
db42f210 PA |
2240 | |
2241 | if (strcmp ("qsThreadInfo", own_buf) == 0) | |
0d62e5e8 | 2242 | { |
f8a4e119 | 2243 | require_running_or_return (own_buf); |
9c80ecd6 | 2244 | if (thread_iter != all_threads.end ()) |
db42f210 | 2245 | { |
95954743 | 2246 | *own_buf++ = 'm'; |
9c80ecd6 SM |
2247 | ptid_t ptid = (*thread_iter)->id; |
2248 | write_ptid (own_buf, ptid); | |
2249 | thread_iter++; | |
db42f210 PA |
2250 | return; |
2251 | } | |
2252 | else | |
2253 | { | |
2254 | sprintf (own_buf, "l"); | |
2255 | return; | |
2256 | } | |
0d62e5e8 DJ |
2257 | } |
2258 | } | |
aa691b87 | 2259 | |
52fb6437 NS |
2260 | if (the_target->read_offsets != NULL |
2261 | && strcmp ("qOffsets", own_buf) == 0) | |
2262 | { | |
2263 | CORE_ADDR text, data; | |
2d717e4f | 2264 | |
f8a4e119 | 2265 | require_running_or_return (own_buf); |
52fb6437 NS |
2266 | if (the_target->read_offsets (&text, &data)) |
2267 | sprintf (own_buf, "Text=%lX;Data=%lX;Bss=%lX", | |
2268 | (long)text, (long)data, (long)data); | |
2269 | else | |
2270 | write_enn (own_buf); | |
1b3f6016 | 2271 | |
52fb6437 NS |
2272 | return; |
2273 | } | |
2274 | ||
be2a5f71 | 2275 | /* Protocol features query. */ |
61012eef | 2276 | if (startswith (own_buf, "qSupported") |
be2a5f71 DJ |
2277 | && (own_buf[10] == ':' || own_buf[10] == '\0')) |
2278 | { | |
95954743 | 2279 | char *p = &own_buf[10]; |
fa593d66 | 2280 | int gdb_supports_qRelocInsn = 0; |
95954743 PA |
2281 | |
2282 | /* Process each feature being provided by GDB. The first | |
2283 | feature will follow a ':', and latter features will follow | |
2284 | ';'. */ | |
2285 | if (*p == ':') | |
d149dd1d PA |
2286 | { |
2287 | char **qsupported = NULL; | |
2288 | int count = 0; | |
06e03fff | 2289 | int unknown = 0; |
d149dd1d PA |
2290 | int i; |
2291 | ||
2292 | /* Two passes, to avoid nested strtok calls in | |
2293 | target_process_qsupported. */ | |
2294 | for (p = strtok (p + 1, ";"); | |
2295 | p != NULL; | |
2296 | p = strtok (NULL, ";")) | |
2297 | { | |
2298 | count++; | |
224c3ddb | 2299 | qsupported = XRESIZEVEC (char *, qsupported, count); |
d149dd1d PA |
2300 | qsupported[count - 1] = xstrdup (p); |
2301 | } | |
2302 | ||
2303 | for (i = 0; i < count; i++) | |
2304 | { | |
2305 | p = qsupported[i]; | |
2306 | if (strcmp (p, "multiprocess+") == 0) | |
2307 | { | |
2308 | /* GDB supports and wants multi-process support if | |
2309 | possible. */ | |
2310 | if (target_supports_multi_process ()) | |
c12a5089 | 2311 | cs.multi_process = 1; |
d149dd1d | 2312 | } |
fa593d66 PA |
2313 | else if (strcmp (p, "qRelocInsn+") == 0) |
2314 | { | |
2315 | /* GDB supports relocate instruction requests. */ | |
2316 | gdb_supports_qRelocInsn = 1; | |
2317 | } | |
1ec68e26 PA |
2318 | else if (strcmp (p, "swbreak+") == 0) |
2319 | { | |
2320 | /* GDB wants us to report whether a trap is caused | |
2321 | by a software breakpoint and for us to handle PC | |
2322 | adjustment if necessary on this target. */ | |
2323 | if (target_supports_stopped_by_sw_breakpoint ()) | |
c12a5089 | 2324 | cs.swbreak_feature = 1; |
1ec68e26 PA |
2325 | } |
2326 | else if (strcmp (p, "hwbreak+") == 0) | |
2327 | { | |
2328 | /* GDB wants us to report whether a trap is caused | |
2329 | by a hardware breakpoint. */ | |
2330 | if (target_supports_stopped_by_hw_breakpoint ()) | |
c12a5089 | 2331 | cs.hwbreak_feature = 1; |
1ec68e26 | 2332 | } |
89245bc0 DB |
2333 | else if (strcmp (p, "fork-events+") == 0) |
2334 | { | |
2335 | /* GDB supports and wants fork events if possible. */ | |
2336 | if (target_supports_fork_events ()) | |
c12a5089 | 2337 | cs.report_fork_events = 1; |
89245bc0 DB |
2338 | } |
2339 | else if (strcmp (p, "vfork-events+") == 0) | |
2340 | { | |
2341 | /* GDB supports and wants vfork events if possible. */ | |
2342 | if (target_supports_vfork_events ()) | |
c12a5089 | 2343 | cs.report_vfork_events = 1; |
89245bc0 | 2344 | } |
7c5d0fad | 2345 | else if (strcmp (p, "exec-events+") == 0) |
94585166 DB |
2346 | { |
2347 | /* GDB supports and wants exec events if possible. */ | |
2348 | if (target_supports_exec_events ()) | |
c12a5089 | 2349 | cs.report_exec_events = 1; |
94585166 | 2350 | } |
750ce8d1 | 2351 | else if (strcmp (p, "vContSupported+") == 0) |
c12a5089 | 2352 | cs.vCont_supported = 1; |
65706a29 PA |
2353 | else if (strcmp (p, "QThreadEvents+") == 0) |
2354 | ; | |
f2faf941 PA |
2355 | else if (strcmp (p, "no-resumed+") == 0) |
2356 | { | |
2357 | /* GDB supports and wants TARGET_WAITKIND_NO_RESUMED | |
2358 | events. */ | |
2359 | report_no_resumed = 1; | |
2360 | } | |
d149dd1d | 2361 | else |
06e03fff PA |
2362 | { |
2363 | /* Move the unknown features all together. */ | |
2364 | qsupported[i] = NULL; | |
2365 | qsupported[unknown] = p; | |
2366 | unknown++; | |
2367 | } | |
d149dd1d PA |
2368 | } |
2369 | ||
06e03fff PA |
2370 | /* Give the target backend a chance to process the unknown |
2371 | features. */ | |
2372 | target_process_qsupported (qsupported, unknown); | |
2373 | ||
2374 | for (i = 0; i < count; i++) | |
2375 | free (qsupported[i]); | |
d149dd1d PA |
2376 | free (qsupported); |
2377 | } | |
95954743 | 2378 | |
9b224c5e | 2379 | sprintf (own_buf, |
0a2dde4a SDJ |
2380 | "PacketSize=%x;QPassSignals+;QProgramSignals+;" |
2381 | "QStartupWithShell+;QEnvironmentHexEncoded+;" | |
bc3b087d SDJ |
2382 | "QEnvironmentReset+;QEnvironmentUnset+;" |
2383 | "QSetWorkingDir+", | |
9b224c5e | 2384 | PBUFSIZ - 1); |
0876f84a | 2385 | |
82075af2 JS |
2386 | if (target_supports_catch_syscall ()) |
2387 | strcat (own_buf, ";QCatchSyscalls+"); | |
2388 | ||
2268b414 | 2389 | if (the_target->qxfer_libraries_svr4 != NULL) |
b1fbec62 GB |
2390 | strcat (own_buf, ";qXfer:libraries-svr4:read+" |
2391 | ";augmented-libraries-svr4-read+"); | |
2268b414 JK |
2392 | else |
2393 | { | |
2394 | /* We do not have any hook to indicate whether the non-SVR4 target | |
2395 | backend supports qXfer:libraries:read, so always report it. */ | |
2396 | strcat (own_buf, ";qXfer:libraries:read+"); | |
2397 | } | |
255e7678 | 2398 | |
0876f84a | 2399 | if (the_target->read_auxv != NULL) |
9f2e1e63 | 2400 | strcat (own_buf, ";qXfer:auxv:read+"); |
2d717e4f | 2401 | |
0e7f50da UW |
2402 | if (the_target->qxfer_spu != NULL) |
2403 | strcat (own_buf, ";qXfer:spu:read+;qXfer:spu:write+"); | |
0876f84a | 2404 | |
4aa995e1 PA |
2405 | if (the_target->qxfer_siginfo != NULL) |
2406 | strcat (own_buf, ";qXfer:siginfo:read+;qXfer:siginfo:write+"); | |
2407 | ||
78d85199 YQ |
2408 | if (the_target->read_loadmap != NULL) |
2409 | strcat (own_buf, ";qXfer:fdpic:read+"); | |
2410 | ||
221c031f UW |
2411 | /* We always report qXfer:features:read, as targets may |
2412 | install XML files on a subsequent call to arch_setup. | |
2413 | If we reported to GDB on startup that we don't support | |
2414 | qXfer:feature:read at all, we will never be re-queried. */ | |
2415 | strcat (own_buf, ";qXfer:features:read+"); | |
23181151 | 2416 | |
c12a5089 | 2417 | if (cs.transport_is_reliable) |
a6f3e723 | 2418 | strcat (own_buf, ";QStartNoAckMode+"); |
07e059b5 VP |
2419 | |
2420 | if (the_target->qxfer_osdata != NULL) | |
1b3f6016 | 2421 | strcat (own_buf, ";qXfer:osdata:read+"); |
07e059b5 | 2422 | |
cf8fd78b PA |
2423 | if (target_supports_multi_process ()) |
2424 | strcat (own_buf, ";multiprocess+"); | |
95954743 | 2425 | |
89245bc0 DB |
2426 | if (target_supports_fork_events ()) |
2427 | strcat (own_buf, ";fork-events+"); | |
2428 | ||
2429 | if (target_supports_vfork_events ()) | |
2430 | strcat (own_buf, ";vfork-events+"); | |
2431 | ||
94585166 DB |
2432 | if (target_supports_exec_events ()) |
2433 | strcat (own_buf, ";exec-events+"); | |
2434 | ||
bd99dc85 PA |
2435 | if (target_supports_non_stop ()) |
2436 | strcat (own_buf, ";QNonStop+"); | |
2437 | ||
03583c20 UW |
2438 | if (target_supports_disable_randomization ()) |
2439 | strcat (own_buf, ";QDisableRandomization+"); | |
2440 | ||
dc146f7c VP |
2441 | strcat (own_buf, ";qXfer:threads:read+"); |
2442 | ||
219f2f23 PA |
2443 | if (target_supports_tracepoints ()) |
2444 | { | |
2445 | strcat (own_buf, ";ConditionalTracepoints+"); | |
2446 | strcat (own_buf, ";TraceStateVariables+"); | |
2447 | strcat (own_buf, ";TracepointSource+"); | |
8336d594 | 2448 | strcat (own_buf, ";DisconnectedTracing+"); |
fa593d66 PA |
2449 | if (gdb_supports_qRelocInsn && target_supports_fast_tracepoints ()) |
2450 | strcat (own_buf, ";FastTracepoints+"); | |
0fb4aa4b | 2451 | strcat (own_buf, ";StaticTracepoints+"); |
1e4d1764 | 2452 | strcat (own_buf, ";InstallInTrace+"); |
0fb4aa4b | 2453 | strcat (own_buf, ";qXfer:statictrace:read+"); |
b3b9301e | 2454 | strcat (own_buf, ";qXfer:traceframe-info:read+"); |
d248b706 | 2455 | strcat (own_buf, ";EnableDisableTracepoints+"); |
f6f899bf | 2456 | strcat (own_buf, ";QTBuffer:size+"); |
3065dfb6 | 2457 | strcat (own_buf, ";tracenz+"); |
219f2f23 PA |
2458 | } |
2459 | ||
bd2b2909 AT |
2460 | if (target_supports_hardware_single_step () |
2461 | || target_supports_software_single_step () ) | |
70b90b91 | 2462 | { |
70b90b91 YQ |
2463 | strcat (own_buf, ";ConditionalBreakpoints+"); |
2464 | } | |
d3ce09f5 | 2465 | strcat (own_buf, ";BreakpointCommands+"); |
9f3a5c85 | 2466 | |
d1feda86 YQ |
2467 | if (target_supports_agent ()) |
2468 | strcat (own_buf, ";QAgent+"); | |
2469 | ||
043c3577 | 2470 | supported_btrace_packets (own_buf); |
9accd112 | 2471 | |
1ec68e26 PA |
2472 | if (target_supports_stopped_by_sw_breakpoint ()) |
2473 | strcat (own_buf, ";swbreak+"); | |
2474 | ||
2475 | if (target_supports_stopped_by_hw_breakpoint ()) | |
2476 | strcat (own_buf, ";hwbreak+"); | |
2477 | ||
e57f1de3 GB |
2478 | if (the_target->pid_to_exec_file != NULL) |
2479 | strcat (own_buf, ";qXfer:exec-file:read+"); | |
2480 | ||
750ce8d1 YQ |
2481 | strcat (own_buf, ";vContSupported+"); |
2482 | ||
65706a29 PA |
2483 | strcat (own_buf, ";QThreadEvents+"); |
2484 | ||
f2faf941 PA |
2485 | strcat (own_buf, ";no-resumed+"); |
2486 | ||
14d2069a GB |
2487 | /* Reinitialize components as needed for the new connection. */ |
2488 | hostio_handle_new_gdb_connection (); | |
de0d863e DB |
2489 | target_handle_new_gdb_connection (); |
2490 | ||
be2a5f71 DJ |
2491 | return; |
2492 | } | |
2493 | ||
dae5f5cf DJ |
2494 | /* Thread-local storage support. */ |
2495 | if (the_target->get_tls_address != NULL | |
61012eef | 2496 | && startswith (own_buf, "qGetTLSAddr:")) |
dae5f5cf DJ |
2497 | { |
2498 | char *p = own_buf + 12; | |
5b1c542e | 2499 | CORE_ADDR parts[2], address = 0; |
dae5f5cf | 2500 | int i, err; |
95954743 | 2501 | ptid_t ptid = null_ptid; |
dae5f5cf | 2502 | |
f8a4e119 | 2503 | require_running_or_return (own_buf); |
2d717e4f | 2504 | |
dae5f5cf DJ |
2505 | for (i = 0; i < 3; i++) |
2506 | { | |
2507 | char *p2; | |
2508 | int len; | |
2509 | ||
2510 | if (p == NULL) | |
2511 | break; | |
2512 | ||
2513 | p2 = strchr (p, ','); | |
2514 | if (p2) | |
2515 | { | |
2516 | len = p2 - p; | |
2517 | p2++; | |
2518 | } | |
2519 | else | |
2520 | { | |
2521 | len = strlen (p); | |
2522 | p2 = NULL; | |
2523 | } | |
2524 | ||
5b1c542e | 2525 | if (i == 0) |
95954743 | 2526 | ptid = read_ptid (p, NULL); |
5b1c542e PA |
2527 | else |
2528 | decode_address (&parts[i - 1], p, len); | |
dae5f5cf DJ |
2529 | p = p2; |
2530 | } | |
2531 | ||
2532 | if (p != NULL || i < 3) | |
2533 | err = 1; | |
2534 | else | |
2535 | { | |
e09875d4 | 2536 | struct thread_info *thread = find_thread_ptid (ptid); |
dae5f5cf DJ |
2537 | |
2538 | if (thread == NULL) | |
2539 | err = 2; | |
2540 | else | |
5b1c542e | 2541 | err = the_target->get_tls_address (thread, parts[0], parts[1], |
dae5f5cf DJ |
2542 | &address); |
2543 | } | |
2544 | ||
2545 | if (err == 0) | |
2546 | { | |
c6f46ca0 | 2547 | strcpy (own_buf, paddress(address)); |
dae5f5cf DJ |
2548 | return; |
2549 | } | |
2550 | else if (err > 0) | |
2551 | { | |
2552 | write_enn (own_buf); | |
2553 | return; | |
2554 | } | |
2555 | ||
2556 | /* Otherwise, pretend we do not understand this packet. */ | |
2557 | } | |
2558 | ||
711e434b PM |
2559 | /* Windows OS Thread Information Block address support. */ |
2560 | if (the_target->get_tib_address != NULL | |
61012eef | 2561 | && startswith (own_buf, "qGetTIBAddr:")) |
711e434b | 2562 | { |
256642e8 | 2563 | const char *annex; |
711e434b PM |
2564 | int n; |
2565 | CORE_ADDR tlb; | |
2566 | ptid_t ptid = read_ptid (own_buf + 12, &annex); | |
2567 | ||
2568 | n = (*the_target->get_tib_address) (ptid, &tlb); | |
2569 | if (n == 1) | |
2570 | { | |
c6f46ca0 | 2571 | strcpy (own_buf, paddress(tlb)); |
711e434b PM |
2572 | return; |
2573 | } | |
2574 | else if (n == 0) | |
2575 | { | |
2576 | write_enn (own_buf); | |
2577 | return; | |
2578 | } | |
2579 | return; | |
2580 | } | |
2581 | ||
c74d0ad8 | 2582 | /* Handle "monitor" commands. */ |
61012eef | 2583 | if (startswith (own_buf, "qRcmd,")) |
c74d0ad8 | 2584 | { |
224c3ddb | 2585 | char *mon = (char *) malloc (PBUFSIZ); |
c74d0ad8 DJ |
2586 | int len = strlen (own_buf + 6); |
2587 | ||
aef93bd7 DE |
2588 | if (mon == NULL) |
2589 | { | |
2590 | write_enn (own_buf); | |
2591 | return; | |
2592 | } | |
2593 | ||
ff0e980e TT |
2594 | if ((len % 2) != 0 |
2595 | || hex2bin (own_buf + 6, (gdb_byte *) mon, len / 2) != len / 2) | |
c74d0ad8 DJ |
2596 | { |
2597 | write_enn (own_buf); | |
2598 | free (mon); | |
2599 | return; | |
2600 | } | |
2601 | mon[len / 2] = '\0'; | |
2602 | ||
2603 | write_ok (own_buf); | |
2604 | ||
cdbfd419 PP |
2605 | if (the_target->handle_monitor_command == NULL |
2606 | || (*the_target->handle_monitor_command) (mon) == 0) | |
2607 | /* Default processing. */ | |
d73f2619 | 2608 | handle_monitor_command (mon, own_buf); |
c74d0ad8 DJ |
2609 | |
2610 | free (mon); | |
2611 | return; | |
2612 | } | |
2613 | ||
61012eef | 2614 | if (startswith (own_buf, "qSearch:memory:")) |
08388c79 | 2615 | { |
f8a4e119 | 2616 | require_running_or_return (own_buf); |
08388c79 DE |
2617 | handle_search_memory (own_buf, packet_len); |
2618 | return; | |
2619 | } | |
2620 | ||
95954743 | 2621 | if (strcmp (own_buf, "qAttached") == 0 |
61012eef | 2622 | || startswith (own_buf, "qAttached:")) |
0b16c5cf | 2623 | { |
95954743 PA |
2624 | struct process_info *process; |
2625 | ||
2626 | if (own_buf[sizeof ("qAttached") - 1]) | |
2627 | { | |
2628 | int pid = strtoul (own_buf + sizeof ("qAttached:") - 1, NULL, 16); | |
9179355e | 2629 | process = find_process_pid (pid); |
95954743 PA |
2630 | } |
2631 | else | |
2632 | { | |
f8a4e119 | 2633 | require_running_or_return (own_buf); |
95954743 PA |
2634 | process = current_process (); |
2635 | } | |
2636 | ||
2637 | if (process == NULL) | |
2638 | { | |
2639 | write_enn (own_buf); | |
2640 | return; | |
2641 | } | |
2642 | ||
2643 | strcpy (own_buf, process->attached ? "1" : "0"); | |
0b16c5cf PA |
2644 | return; |
2645 | } | |
2646 | ||
61012eef | 2647 | if (startswith (own_buf, "qCRC:")) |
30ba68cb MS |
2648 | { |
2649 | /* CRC check (compare-section). */ | |
256642e8 | 2650 | const char *comma; |
aca22551 | 2651 | ULONGEST base; |
30ba68cb MS |
2652 | int len; |
2653 | unsigned long long crc; | |
2654 | ||
f8a4e119 | 2655 | require_running_or_return (own_buf); |
aca22551 | 2656 | comma = unpack_varlen_hex (own_buf + 5, &base); |
30ba68cb MS |
2657 | if (*comma++ != ',') |
2658 | { | |
2659 | write_enn (own_buf); | |
2660 | return; | |
2661 | } | |
2662 | len = strtoul (comma, NULL, 16); | |
2663 | crc = crc32 (base, len, 0xffffffff); | |
2664 | /* Check for memory failure. */ | |
2665 | if (crc == (unsigned long long) -1) | |
2666 | { | |
2667 | write_enn (own_buf); | |
2668 | return; | |
2669 | } | |
2670 | sprintf (own_buf, "C%lx", (unsigned long) crc); | |
2671 | return; | |
2672 | } | |
2673 | ||
d08aafef PA |
2674 | if (handle_qxfer (own_buf, packet_len, new_packet_len_p)) |
2675 | return; | |
2676 | ||
219f2f23 PA |
2677 | if (target_supports_tracepoints () && handle_tracepoint_query (own_buf)) |
2678 | return; | |
2679 | ||
ce3a066d DJ |
2680 | /* Otherwise we didn't know what packet it was. Say we didn't |
2681 | understand it. */ | |
2682 | own_buf[0] = 0; | |
2683 | } | |
2684 | ||
ce1a5b52 | 2685 | static void gdb_wants_all_threads_stopped (void); |
b7ea362b PA |
2686 | static void resume (struct thread_resume *actions, size_t n); |
2687 | ||
649ebbca DE |
2688 | /* The callback that is passed to visit_actioned_threads. */ |
2689 | typedef int (visit_actioned_threads_callback_ftype) | |
2690 | (const struct thread_resume *, struct thread_info *); | |
2691 | ||
b7ea362b PA |
2692 | /* Call CALLBACK for any thread to which ACTIONS applies to. Returns |
2693 | true if CALLBACK returns true. Returns false if no matching thread | |
649ebbca | 2694 | is found or CALLBACK results false. |
eaddb425 | 2695 | Note: This function is itself a callback for find_thread. */ |
b7ea362b | 2696 | |
eaddb425 SM |
2697 | static bool |
2698 | visit_actioned_threads (thread_info *thread, | |
2699 | const struct thread_resume *actions, | |
2700 | size_t num_actions, | |
2701 | visit_actioned_threads_callback_ftype *callback) | |
b7ea362b | 2702 | { |
eaddb425 | 2703 | for (size_t i = 0; i < num_actions; i++) |
b7ea362b | 2704 | { |
649ebbca | 2705 | const struct thread_resume *action = &actions[i]; |
b7ea362b | 2706 | |
d7e15655 TT |
2707 | if (action->thread == minus_one_ptid |
2708 | || action->thread == thread->id | |
e99b03dc | 2709 | || ((action->thread.pid () |
9c80ecd6 | 2710 | == thread->id.pid ()) |
e38504b3 | 2711 | && action->thread.lwp () == -1)) |
b7ea362b | 2712 | { |
649ebbca | 2713 | if ((*callback) (action, thread)) |
eaddb425 | 2714 | return true; |
b7ea362b PA |
2715 | } |
2716 | } | |
2717 | ||
eaddb425 | 2718 | return false; |
b7ea362b PA |
2719 | } |
2720 | ||
2721 | /* Callback for visit_actioned_threads. If the thread has a pending | |
2722 | status to report, report it now. */ | |
2723 | ||
2724 | static int | |
2725 | handle_pending_status (const struct thread_resume *resumption, | |
2726 | struct thread_info *thread) | |
2727 | { | |
c12a5089 | 2728 | client_state &cs = get_client_state (); |
b7ea362b PA |
2729 | if (thread->status_pending_p) |
2730 | { | |
2731 | thread->status_pending_p = 0; | |
2732 | ||
c12a5089 SC |
2733 | cs.last_status = thread->last_status; |
2734 | cs.last_ptid = thread->id; | |
2735 | prepare_resume_reply (cs.own_buf, cs.last_ptid, &cs.last_status); | |
b7ea362b PA |
2736 | return 1; |
2737 | } | |
2738 | return 0; | |
2739 | } | |
ce1a5b52 | 2740 | |
64386c31 | 2741 | /* Parse vCont packets. */ |
5b3da067 | 2742 | static void |
5b1c542e | 2743 | handle_v_cont (char *own_buf) |
64386c31 | 2744 | { |
256642e8 | 2745 | const char *p; |
64386c31 | 2746 | int n = 0, i = 0; |
2bd7c093 | 2747 | struct thread_resume *resume_info; |
436252de | 2748 | struct thread_resume default_action { null_ptid }; |
64386c31 DJ |
2749 | |
2750 | /* Count the number of semicolons in the packet. There should be one | |
2751 | for every action. */ | |
2752 | p = &own_buf[5]; | |
2753 | while (p) | |
2754 | { | |
2755 | n++; | |
2756 | p++; | |
2757 | p = strchr (p, ';'); | |
2758 | } | |
2bd7c093 | 2759 | |
224c3ddb | 2760 | resume_info = (struct thread_resume *) malloc (n * sizeof (resume_info[0])); |
aef93bd7 DE |
2761 | if (resume_info == NULL) |
2762 | goto err; | |
64386c31 | 2763 | |
64386c31 | 2764 | p = &own_buf[5]; |
64386c31 DJ |
2765 | while (*p) |
2766 | { | |
2767 | p++; | |
2768 | ||
c2d6af84 PA |
2769 | memset (&resume_info[i], 0, sizeof resume_info[i]); |
2770 | ||
64386c31 | 2771 | if (p[0] == 's' || p[0] == 'S') |
bd99dc85 | 2772 | resume_info[i].kind = resume_step; |
c2d6af84 PA |
2773 | else if (p[0] == 'r') |
2774 | resume_info[i].kind = resume_step; | |
64386c31 | 2775 | else if (p[0] == 'c' || p[0] == 'C') |
bd99dc85 PA |
2776 | resume_info[i].kind = resume_continue; |
2777 | else if (p[0] == 't') | |
2778 | resume_info[i].kind = resume_stop; | |
64386c31 DJ |
2779 | else |
2780 | goto err; | |
2781 | ||
2782 | if (p[0] == 'S' || p[0] == 'C') | |
2783 | { | |
256642e8 PA |
2784 | char *q; |
2785 | int sig = strtol (p + 1, &q, 16); | |
64386c31 DJ |
2786 | if (p == q) |
2787 | goto err; | |
2788 | p = q; | |
2789 | ||
e053fbc4 | 2790 | if (!gdb_signal_to_host_p ((enum gdb_signal) sig)) |
64386c31 | 2791 | goto err; |
e053fbc4 | 2792 | resume_info[i].sig = gdb_signal_to_host ((enum gdb_signal) sig); |
64386c31 | 2793 | } |
c2d6af84 PA |
2794 | else if (p[0] == 'r') |
2795 | { | |
6740dc9c | 2796 | ULONGEST addr; |
c2d6af84 | 2797 | |
6740dc9c PA |
2798 | p = unpack_varlen_hex (p + 1, &addr); |
2799 | resume_info[i].step_range_start = addr; | |
c2d6af84 | 2800 | |
6740dc9c PA |
2801 | if (*p != ',') |
2802 | goto err; | |
c2d6af84 | 2803 | |
6740dc9c PA |
2804 | p = unpack_varlen_hex (p + 1, &addr); |
2805 | resume_info[i].step_range_end = addr; | |
c2d6af84 | 2806 | } |
64386c31 DJ |
2807 | else |
2808 | { | |
64386c31 DJ |
2809 | p = p + 1; |
2810 | } | |
2811 | ||
2812 | if (p[0] == 0) | |
2813 | { | |
95954743 | 2814 | resume_info[i].thread = minus_one_ptid; |
64386c31 DJ |
2815 | default_action = resume_info[i]; |
2816 | ||
2817 | /* Note: we don't increment i here, we'll overwrite this entry | |
2818 | the next time through. */ | |
2819 | } | |
2820 | else if (p[0] == ':') | |
2821 | { | |
256642e8 | 2822 | const char *q; |
95954743 | 2823 | ptid_t ptid = read_ptid (p + 1, &q); |
a06660f7 | 2824 | |
64386c31 DJ |
2825 | if (p == q) |
2826 | goto err; | |
2827 | p = q; | |
2828 | if (p[0] != ';' && p[0] != 0) | |
2829 | goto err; | |
2830 | ||
95954743 | 2831 | resume_info[i].thread = ptid; |
a06660f7 | 2832 | |
64386c31 DJ |
2833 | i++; |
2834 | } | |
2835 | } | |
2836 | ||
2bd7c093 PA |
2837 | if (i < n) |
2838 | resume_info[i] = default_action; | |
64386c31 | 2839 | |
b7ea362b PA |
2840 | resume (resume_info, n); |
2841 | free (resume_info); | |
2842 | return; | |
2843 | ||
2844 | err: | |
2845 | write_enn (own_buf); | |
2846 | free (resume_info); | |
2847 | return; | |
2848 | } | |
2849 | ||
2850 | /* Resume target with ACTIONS, an array of NUM_ACTIONS elements. */ | |
2851 | ||
2852 | static void | |
2853 | resume (struct thread_resume *actions, size_t num_actions) | |
2854 | { | |
c12a5089 | 2855 | client_state &cs = get_client_state (); |
bd99dc85 | 2856 | if (!non_stop) |
b7ea362b PA |
2857 | { |
2858 | /* Check if among the threads that GDB wants actioned, there's | |
2859 | one with a pending status to report. If so, skip actually | |
2860 | resuming/stopping and report the pending event | |
2861 | immediately. */ | |
649ebbca | 2862 | |
eaddb425 SM |
2863 | thread_info *thread_with_status = find_thread ([&] (thread_info *thread) |
2864 | { | |
2865 | return visit_actioned_threads (thread, actions, num_actions, | |
2866 | handle_pending_status); | |
2867 | }); | |
2868 | ||
2869 | if (thread_with_status != NULL) | |
b7ea362b | 2870 | return; |
bd99dc85 | 2871 | |
b7ea362b PA |
2872 | enable_async_io (); |
2873 | } | |
64386c31 | 2874 | |
b7ea362b | 2875 | (*the_target->resume) (actions, num_actions); |
64386c31 | 2876 | |
bd99dc85 | 2877 | if (non_stop) |
c12a5089 | 2878 | write_ok (cs.own_buf); |
bd99dc85 PA |
2879 | else |
2880 | { | |
c12a5089 | 2881 | cs.last_ptid = mywait (minus_one_ptid, &cs.last_status, 0, 1); |
ce1a5b52 | 2882 | |
c12a5089 | 2883 | if (cs.last_status.kind == TARGET_WAITKIND_NO_RESUMED |
f2faf941 | 2884 | && !report_no_resumed) |
fa96cb38 | 2885 | { |
f2faf941 PA |
2886 | /* The client does not support this stop reply. At least |
2887 | return error. */ | |
c12a5089 | 2888 | sprintf (cs.own_buf, "E.No unwaited-for children left."); |
fa96cb38 PA |
2889 | disable_async_io (); |
2890 | return; | |
2891 | } | |
2892 | ||
c12a5089 SC |
2893 | if (cs.last_status.kind != TARGET_WAITKIND_EXITED |
2894 | && cs.last_status.kind != TARGET_WAITKIND_SIGNALLED | |
2895 | && cs.last_status.kind != TARGET_WAITKIND_NO_RESUMED) | |
2896 | current_thread->last_status = cs.last_status; | |
d20a8ad9 | 2897 | |
ce1a5b52 PA |
2898 | /* From the client's perspective, all-stop mode always stops all |
2899 | threads implicitly (and the target backend has already done | |
2900 | so by now). Tag all threads as "want-stopped", so we don't | |
2901 | resume them implicitly without the client telling us to. */ | |
2902 | gdb_wants_all_threads_stopped (); | |
c12a5089 | 2903 | prepare_resume_reply (cs.own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 | 2904 | disable_async_io (); |
6bd31874 | 2905 | |
c12a5089 SC |
2906 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
2907 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2908 | target_mourn_inferior (cs.last_ptid); | |
bd99dc85 | 2909 | } |
64386c31 DJ |
2910 | } |
2911 | ||
2d717e4f | 2912 | /* Attach to a new program. Return 1 if successful, 0 if failure. */ |
5b3da067 | 2913 | static int |
5b1c542e | 2914 | handle_v_attach (char *own_buf) |
2d717e4f | 2915 | { |
c12a5089 | 2916 | client_state &cs = get_client_state (); |
2d717e4f DJ |
2917 | int pid; |
2918 | ||
2919 | pid = strtol (own_buf + 8, NULL, 16); | |
5b1c542e | 2920 | if (pid != 0 && attach_inferior (pid) == 0) |
2d717e4f | 2921 | { |
aeba519e PA |
2922 | /* Don't report shared library events after attaching, even if |
2923 | some libraries are preloaded. GDB will always poll the | |
2924 | library list. Avoids the "stopped by shared library event" | |
2925 | notice on the GDB side. */ | |
2926 | dlls_changed = 0; | |
bd99dc85 PA |
2927 | |
2928 | if (non_stop) | |
2929 | { | |
2930 | /* In non-stop, we don't send a resume reply. Stop events | |
2931 | will follow up using the normal notification | |
2932 | mechanism. */ | |
2933 | write_ok (own_buf); | |
2934 | } | |
2935 | else | |
c12a5089 | 2936 | prepare_resume_reply (own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 | 2937 | |
2d717e4f DJ |
2938 | return 1; |
2939 | } | |
2940 | else | |
2941 | { | |
2942 | write_enn (own_buf); | |
2943 | return 0; | |
2944 | } | |
2945 | } | |
2946 | ||
2947 | /* Run a new program. Return 1 if successful, 0 if failure. */ | |
2948 | static int | |
5b1c542e | 2949 | handle_v_run (char *own_buf) |
2d717e4f | 2950 | { |
c12a5089 | 2951 | client_state &cs = get_client_state (); |
7c5ded6a SDJ |
2952 | char *p, *next_p; |
2953 | std::vector<char *> new_argv; | |
2090129c | 2954 | char *new_program_name = NULL; |
2d717e4f DJ |
2955 | int i, new_argc; |
2956 | ||
2957 | new_argc = 0; | |
2958 | for (p = own_buf + strlen ("vRun;"); p && *p; p = strchr (p, ';')) | |
2959 | { | |
2960 | p++; | |
2961 | new_argc++; | |
2962 | } | |
2963 | ||
7c5ded6a | 2964 | for (i = 0, p = own_buf + strlen ("vRun;"); *p; p = next_p, ++i) |
2d717e4f DJ |
2965 | { |
2966 | next_p = strchr (p, ';'); | |
2967 | if (next_p == NULL) | |
2968 | next_p = p + strlen (p); | |
2969 | ||
2970 | if (i == 0 && p == next_p) | |
7c5ded6a SDJ |
2971 | { |
2972 | /* No program specified. */ | |
2090129c SDJ |
2973 | new_program_name = NULL; |
2974 | } | |
2975 | else if (p == next_p) | |
2976 | { | |
2977 | /* Empty argument. */ | |
2978 | new_argv.push_back (xstrdup ("''")); | |
7c5ded6a | 2979 | } |
2d717e4f DJ |
2980 | else |
2981 | { | |
7c5ded6a | 2982 | size_t len = (next_p - p) / 2; |
2090129c | 2983 | /* ARG is the unquoted argument received via the RSP. */ |
7c5ded6a | 2984 | char *arg = (char *) xmalloc (len + 1); |
2090129c SDJ |
2985 | /* FULL_ARGS will contain the quoted version of ARG. */ |
2986 | char *full_arg = (char *) xmalloc ((len + 1) * 2); | |
2987 | /* These are pointers used to navigate the strings above. */ | |
2988 | char *tmp_arg = arg; | |
2989 | char *tmp_full_arg = full_arg; | |
2990 | int need_quote = 0; | |
7c5ded6a SDJ |
2991 | |
2992 | hex2bin (p, (gdb_byte *) arg, len); | |
2993 | arg[len] = '\0'; | |
2d717e4f | 2994 | |
2090129c SDJ |
2995 | while (*tmp_arg != '\0') |
2996 | { | |
2997 | switch (*tmp_arg) | |
2998 | { | |
2999 | case '\n': | |
3000 | /* Quote \n. */ | |
3001 | *tmp_full_arg = '\''; | |
3002 | ++tmp_full_arg; | |
3003 | need_quote = 1; | |
3004 | break; | |
3005 | ||
3006 | case '\'': | |
3007 | /* Quote single quote. */ | |
3008 | *tmp_full_arg = '\\'; | |
3009 | ++tmp_full_arg; | |
3010 | break; | |
3011 | ||
3012 | default: | |
3013 | break; | |
3014 | } | |
3015 | ||
3016 | *tmp_full_arg = *tmp_arg; | |
3017 | ++tmp_full_arg; | |
3018 | ++tmp_arg; | |
3019 | } | |
3020 | ||
3021 | if (need_quote) | |
3022 | *tmp_full_arg++ = '\''; | |
3023 | ||
3024 | /* Finish FULL_ARG and push it into the vector containing | |
3025 | the argv. */ | |
3026 | *tmp_full_arg = '\0'; | |
3027 | if (i == 0) | |
3028 | new_program_name = full_arg; | |
3029 | else | |
3030 | new_argv.push_back (full_arg); | |
3031 | xfree (arg); | |
3032 | } | |
2d717e4f DJ |
3033 | if (*next_p) |
3034 | next_p++; | |
2d717e4f | 3035 | } |
7c5ded6a | 3036 | new_argv.push_back (NULL); |
2d717e4f | 3037 | |
2090129c | 3038 | if (new_program_name == NULL) |
2d717e4f | 3039 | { |
f142445f DJ |
3040 | /* GDB didn't specify a program to run. Use the program from the |
3041 | last run with the new argument list. */ | |
25e3c82c | 3042 | if (program_path.get () == NULL) |
2d717e4f DJ |
3043 | { |
3044 | write_enn (own_buf); | |
7c5ded6a | 3045 | free_vector_argv (new_argv); |
2d717e4f DJ |
3046 | return 0; |
3047 | } | |
2090129c SDJ |
3048 | } |
3049 | else | |
25e3c82c | 3050 | program_path.set (gdb::unique_xmalloc_ptr<char> (new_program_name)); |
f142445f | 3051 | |
aef93bd7 | 3052 | /* Free the old argv and install the new one. */ |
2090129c SDJ |
3053 | free_vector_argv (program_args); |
3054 | program_args = new_argv; | |
3055 | ||
25e3c82c | 3056 | create_inferior (program_path.get (), program_args); |
2d717e4f | 3057 | |
c12a5089 | 3058 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
2d717e4f | 3059 | { |
c12a5089 | 3060 | prepare_resume_reply (own_buf, cs.last_ptid, &cs.last_status); |
bd99dc85 PA |
3061 | |
3062 | /* In non-stop, sending a resume reply doesn't set the general | |
3063 | thread, but GDB assumes a vRun sets it (this is so GDB can | |
3064 | query which is the main thread of the new inferior. */ | |
3065 | if (non_stop) | |
c12a5089 | 3066 | cs.general_thread = cs.last_ptid; |
bd99dc85 | 3067 | |
2d717e4f DJ |
3068 | return 1; |
3069 | } | |
3070 | else | |
3071 | { | |
3072 | write_enn (own_buf); | |
3073 | return 0; | |
3074 | } | |
3075 | } | |
3076 | ||
95954743 | 3077 | /* Kill process. Return 1 if successful, 0 if failure. */ |
5b3da067 | 3078 | static int |
95954743 PA |
3079 | handle_v_kill (char *own_buf) |
3080 | { | |
c12a5089 | 3081 | client_state &cs = get_client_state (); |
95954743 PA |
3082 | int pid; |
3083 | char *p = &own_buf[6]; | |
c12a5089 | 3084 | if (cs.multi_process) |
0f54c268 PM |
3085 | pid = strtol (p, NULL, 16); |
3086 | else | |
3087 | pid = signal_pid; | |
a780ef4f PA |
3088 | |
3089 | process_info *proc = find_process_pid (pid); | |
3090 | ||
3091 | if (proc != nullptr && kill_inferior (proc) == 0) | |
95954743 | 3092 | { |
c12a5089 SC |
3093 | cs.last_status.kind = TARGET_WAITKIND_SIGNALLED; |
3094 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
f2907e49 | 3095 | cs.last_ptid = ptid_t (pid); |
c12a5089 | 3096 | discard_queued_stop_replies (cs.last_ptid); |
95954743 PA |
3097 | write_ok (own_buf); |
3098 | return 1; | |
3099 | } | |
3100 | else | |
3101 | { | |
3102 | write_enn (own_buf); | |
3103 | return 0; | |
3104 | } | |
3105 | } | |
3106 | ||
64386c31 | 3107 | /* Handle all of the extended 'v' packets. */ |
28170b88 | 3108 | void |
5b1c542e | 3109 | handle_v_requests (char *own_buf, int packet_len, int *new_packet_len) |
64386c31 | 3110 | { |
c12a5089 | 3111 | client_state &cs = get_client_state (); |
db42f210 | 3112 | if (!disable_packet_vCont) |
64386c31 | 3113 | { |
de979965 PA |
3114 | if (strcmp (own_buf, "vCtrlC") == 0) |
3115 | { | |
3116 | (*the_target->request_interrupt) (); | |
3117 | write_ok (own_buf); | |
3118 | return; | |
3119 | } | |
3120 | ||
61012eef | 3121 | if (startswith (own_buf, "vCont;")) |
db42f210 | 3122 | { |
5b1c542e | 3123 | handle_v_cont (own_buf); |
db42f210 PA |
3124 | return; |
3125 | } | |
64386c31 | 3126 | |
61012eef | 3127 | if (startswith (own_buf, "vCont?")) |
db42f210 | 3128 | { |
750ce8d1 YQ |
3129 | strcpy (own_buf, "vCont;c;C;t"); |
3130 | ||
21536b36 YQ |
3131 | if (target_supports_hardware_single_step () |
3132 | || target_supports_software_single_step () | |
c12a5089 | 3133 | || !cs.vCont_supported) |
750ce8d1 | 3134 | { |
21536b36 YQ |
3135 | /* If target supports single step either by hardware or by |
3136 | software, add actions s and S to the list of supported | |
3137 | actions. On the other hand, if GDB doesn't request the | |
3138 | supported vCont actions in qSupported packet, add s and | |
3139 | S to the list too. */ | |
750ce8d1 YQ |
3140 | own_buf = own_buf + strlen (own_buf); |
3141 | strcpy (own_buf, ";s;S"); | |
3142 | } | |
3143 | ||
c2d6af84 PA |
3144 | if (target_supports_range_stepping ()) |
3145 | { | |
3146 | own_buf = own_buf + strlen (own_buf); | |
3147 | strcpy (own_buf, ";r"); | |
3148 | } | |
db42f210 PA |
3149 | return; |
3150 | } | |
64386c31 DJ |
3151 | } |
3152 | ||
61012eef | 3153 | if (startswith (own_buf, "vFile:") |
a6b151f1 DJ |
3154 | && handle_vFile (own_buf, packet_len, new_packet_len)) |
3155 | return; | |
3156 | ||
61012eef | 3157 | if (startswith (own_buf, "vAttach;")) |
2d717e4f | 3158 | { |
c12a5089 | 3159 | if ((!extended_protocol || !cs.multi_process) && target_running ()) |
2d717e4f | 3160 | { |
fd96d250 PA |
3161 | fprintf (stderr, "Already debugging a process\n"); |
3162 | write_enn (own_buf); | |
3163 | return; | |
2d717e4f | 3164 | } |
5b1c542e | 3165 | handle_v_attach (own_buf); |
2d717e4f DJ |
3166 | return; |
3167 | } | |
3168 | ||
61012eef | 3169 | if (startswith (own_buf, "vRun;")) |
2d717e4f | 3170 | { |
c12a5089 | 3171 | if ((!extended_protocol || !cs.multi_process) && target_running ()) |
2d717e4f | 3172 | { |
fd96d250 PA |
3173 | fprintf (stderr, "Already debugging a process\n"); |
3174 | write_enn (own_buf); | |
3175 | return; | |
2d717e4f | 3176 | } |
5b1c542e | 3177 | handle_v_run (own_buf); |
2d717e4f DJ |
3178 | return; |
3179 | } | |
3180 | ||
61012eef | 3181 | if (startswith (own_buf, "vKill;")) |
95954743 PA |
3182 | { |
3183 | if (!target_running ()) | |
3184 | { | |
3185 | fprintf (stderr, "No process to kill\n"); | |
3186 | write_enn (own_buf); | |
3187 | return; | |
3188 | } | |
3189 | handle_v_kill (own_buf); | |
3190 | return; | |
3191 | } | |
3192 | ||
14a00470 YQ |
3193 | if (handle_notif_ack (own_buf, packet_len)) |
3194 | return; | |
bd99dc85 | 3195 | |
64386c31 DJ |
3196 | /* Otherwise we didn't know what packet it was. Say we didn't |
3197 | understand it. */ | |
3198 | own_buf[0] = 0; | |
3199 | return; | |
3200 | } | |
3201 | ||
0bfdf32f | 3202 | /* Resume thread and wait for another event. In non-stop mode, |
bd99dc85 PA |
3203 | don't really wait here, but return immediatelly to the event |
3204 | loop. */ | |
1fd7cdc2 | 3205 | static void |
5b1c542e | 3206 | myresume (char *own_buf, int step, int sig) |
64386c31 | 3207 | { |
c12a5089 | 3208 | client_state &cs = get_client_state (); |
64386c31 DJ |
3209 | struct thread_resume resume_info[2]; |
3210 | int n = 0; | |
2bd7c093 | 3211 | int valid_cont_thread; |
a20d5e98 | 3212 | |
d7e15655 TT |
3213 | valid_cont_thread = (cs.cont_thread != null_ptid |
3214 | && cs.cont_thread != minus_one_ptid); | |
2bd7c093 PA |
3215 | |
3216 | if (step || sig || valid_cont_thread) | |
64386c31 | 3217 | { |
fbd5db48 | 3218 | resume_info[0].thread = current_ptid; |
bd99dc85 PA |
3219 | if (step) |
3220 | resume_info[0].kind = resume_step; | |
3221 | else | |
3222 | resume_info[0].kind = resume_continue; | |
64386c31 | 3223 | resume_info[0].sig = sig; |
64386c31 DJ |
3224 | n++; |
3225 | } | |
2bd7c093 PA |
3226 | |
3227 | if (!valid_cont_thread) | |
3228 | { | |
95954743 | 3229 | resume_info[n].thread = minus_one_ptid; |
bd99dc85 | 3230 | resume_info[n].kind = resume_continue; |
2bd7c093 PA |
3231 | resume_info[n].sig = 0; |
3232 | n++; | |
3233 | } | |
64386c31 | 3234 | |
b7ea362b | 3235 | resume (resume_info, n); |
bd99dc85 PA |
3236 | } |
3237 | ||
f0045347 | 3238 | /* Callback for for_each_thread. Make a new stop reply for each |
bd99dc85 PA |
3239 | stopped thread. */ |
3240 | ||
99078d34 SM |
3241 | static void |
3242 | queue_stop_reply_callback (thread_info *thread) | |
bd99dc85 | 3243 | { |
8336d594 PA |
3244 | /* For now, assume targets that don't have this callback also don't |
3245 | manage the thread's last_status field. */ | |
3246 | if (the_target->thread_stopped == NULL) | |
95954743 | 3247 | { |
8d749320 | 3248 | struct vstop_notif *new_notif = XNEW (struct vstop_notif); |
14a00470 | 3249 | |
9c80ecd6 | 3250 | new_notif->ptid = thread->id; |
14a00470 | 3251 | new_notif->status = thread->last_status; |
8336d594 PA |
3252 | /* Pass the last stop reply back to GDB, but don't notify |
3253 | yet. */ | |
14a00470 YQ |
3254 | notif_event_enque (¬if_stop, |
3255 | (struct notif_event *) new_notif); | |
8336d594 PA |
3256 | } |
3257 | else | |
3258 | { | |
3259 | if (thread_stopped (thread)) | |
3260 | { | |
3261 | if (debug_threads) | |
3360c0bf | 3262 | { |
23fdd69e | 3263 | std::string status_string |
3360c0bf LM |
3264 | = target_waitstatus_to_string (&thread->last_status); |
3265 | ||
87ce2a04 | 3266 | debug_printf ("Reporting thread %s as already stopped with %s\n", |
9c80ecd6 | 3267 | target_pid_to_str (thread->id), |
23fdd69e | 3268 | status_string.c_str ()); |
3360c0bf | 3269 | } |
8336d594 | 3270 | |
d20a8ad9 PA |
3271 | gdb_assert (thread->last_status.kind != TARGET_WAITKIND_IGNORE); |
3272 | ||
8336d594 PA |
3273 | /* Pass the last stop reply back to GDB, but don't notify |
3274 | yet. */ | |
9c80ecd6 | 3275 | queue_stop_reply (thread->id, &thread->last_status); |
8336d594 | 3276 | } |
95954743 | 3277 | } |
64386c31 DJ |
3278 | } |
3279 | ||
ce1a5b52 PA |
3280 | /* Set this inferior threads's state as "want-stopped". We won't |
3281 | resume this thread until the client gives us another action for | |
3282 | it. */ | |
8336d594 PA |
3283 | |
3284 | static void | |
9c80ecd6 | 3285 | gdb_wants_thread_stopped (thread_info *thread) |
8336d594 | 3286 | { |
8336d594 PA |
3287 | thread->last_resume_kind = resume_stop; |
3288 | ||
3289 | if (thread->last_status.kind == TARGET_WAITKIND_IGNORE) | |
3290 | { | |
ce1a5b52 PA |
3291 | /* Most threads are stopped implicitly (all-stop); tag that with |
3292 | signal 0. */ | |
8336d594 | 3293 | thread->last_status.kind = TARGET_WAITKIND_STOPPED; |
a493e3e2 | 3294 | thread->last_status.value.sig = GDB_SIGNAL_0; |
8336d594 PA |
3295 | } |
3296 | } | |
3297 | ||
3298 | /* Set all threads' states as "want-stopped". */ | |
3299 | ||
3300 | static void | |
3301 | gdb_wants_all_threads_stopped (void) | |
3302 | { | |
f0045347 | 3303 | for_each_thread (gdb_wants_thread_stopped); |
8336d594 PA |
3304 | } |
3305 | ||
f0045347 | 3306 | /* Callback for for_each_thread. If the thread is stopped with an |
b7ea362b PA |
3307 | interesting event, mark it as having a pending event. */ |
3308 | ||
3309 | static void | |
9c80ecd6 | 3310 | set_pending_status_callback (thread_info *thread) |
b7ea362b | 3311 | { |
b7ea362b PA |
3312 | if (thread->last_status.kind != TARGET_WAITKIND_STOPPED |
3313 | || (thread->last_status.value.sig != GDB_SIGNAL_0 | |
3314 | /* A breakpoint, watchpoint or finished step from a previous | |
3315 | GDB run isn't considered interesting for a new GDB run. | |
3316 | If we left those pending, the new GDB could consider them | |
3317 | random SIGTRAPs. This leaves out real async traps. We'd | |
3318 | have to peek into the (target-specific) siginfo to | |
3319 | distinguish those. */ | |
3320 | && thread->last_status.value.sig != GDB_SIGNAL_TRAP)) | |
3321 | thread->status_pending_p = 1; | |
3322 | } | |
3323 | ||
5b1c542e PA |
3324 | /* Status handler for the '?' packet. */ |
3325 | ||
3326 | static void | |
3327 | handle_status (char *own_buf) | |
3328 | { | |
c12a5089 SC |
3329 | client_state &cs = get_client_state (); |
3330 | ||
8336d594 | 3331 | /* GDB is connected, don't forward events to the target anymore. */ |
9179355e SM |
3332 | for_each_process ([] (process_info *process) { |
3333 | process->gdb_detached = 0; | |
3334 | }); | |
bd99dc85 PA |
3335 | |
3336 | /* In non-stop mode, we must send a stop reply for each stopped | |
3337 | thread. In all-stop mode, just send one for the first stopped | |
3338 | thread we find. */ | |
3339 | ||
3340 | if (non_stop) | |
3341 | { | |
99078d34 | 3342 | for_each_thread (queue_stop_reply_callback); |
bd99dc85 PA |
3343 | |
3344 | /* The first is sent immediatly. OK is sent if there is no | |
3345 | stopped thread, which is the same handling of the vStopped | |
3346 | packet (by design). */ | |
c12a5089 | 3347 | notif_write_event (¬if_stop, cs.own_buf); |
bd99dc85 | 3348 | } |
5b1c542e | 3349 | else |
bd99dc85 | 3350 | { |
9c80ecd6 | 3351 | thread_info *thread = NULL; |
b7ea362b | 3352 | |
7984d532 | 3353 | pause_all (0); |
fa593d66 | 3354 | stabilize_threads (); |
8336d594 PA |
3355 | gdb_wants_all_threads_stopped (); |
3356 | ||
b7ea362b PA |
3357 | /* We can only report one status, but we might be coming out of |
3358 | non-stop -- if more than one thread is stopped with | |
3359 | interesting events, leave events for the threads we're not | |
3360 | reporting now pending. They'll be reported the next time the | |
3361 | threads are resumed. Start by marking all interesting events | |
3362 | as pending. */ | |
f0045347 | 3363 | for_each_thread (set_pending_status_callback); |
b7ea362b PA |
3364 | |
3365 | /* Prefer the last thread that reported an event to GDB (even if | |
3366 | that was a GDB_SIGNAL_TRAP). */ | |
c12a5089 SC |
3367 | if (cs.last_status.kind != TARGET_WAITKIND_IGNORE |
3368 | && cs.last_status.kind != TARGET_WAITKIND_EXITED | |
3369 | && cs.last_status.kind != TARGET_WAITKIND_SIGNALLED) | |
3370 | thread = find_thread_ptid (cs.last_ptid); | |
b7ea362b PA |
3371 | |
3372 | /* If the last event thread is not found for some reason, look | |
3373 | for some other thread that might have an event to report. */ | |
3374 | if (thread == NULL) | |
da4ae14a | 3375 | thread = find_thread ([] (thread_info *thr_arg) |
99078d34 | 3376 | { |
da4ae14a | 3377 | return thr_arg->status_pending_p; |
99078d34 | 3378 | }); |
b7ea362b PA |
3379 | |
3380 | /* If we're still out of luck, simply pick the first thread in | |
3381 | the thread list. */ | |
3382 | if (thread == NULL) | |
9c80ecd6 | 3383 | thread = get_first_thread (); |
b7ea362b PA |
3384 | |
3385 | if (thread != NULL) | |
8336d594 | 3386 | { |
b7ea362b PA |
3387 | struct thread_info *tp = (struct thread_info *) thread; |
3388 | ||
3389 | /* We're reporting this event, so it's no longer | |
3390 | pending. */ | |
3391 | tp->status_pending_p = 0; | |
3392 | ||
3393 | /* GDB assumes the current thread is the thread we're | |
3394 | reporting the status for. */ | |
c12a5089 | 3395 | cs.general_thread = thread->id; |
f557a88a | 3396 | set_desired_thread (); |
8336d594 | 3397 | |
b7ea362b | 3398 | gdb_assert (tp->last_status.kind != TARGET_WAITKIND_IGNORE); |
9c80ecd6 | 3399 | prepare_resume_reply (own_buf, tp->id, &tp->last_status); |
8336d594 | 3400 | } |
bd99dc85 PA |
3401 | else |
3402 | strcpy (own_buf, "W00"); | |
3403 | } | |
5b1c542e PA |
3404 | } |
3405 | ||
dd24457d DJ |
3406 | static void |
3407 | gdbserver_version (void) | |
3408 | { | |
c16158bc | 3409 | printf ("GNU gdbserver %s%s\n" |
66d91b39 | 3410 | "Copyright (C) 2019 Free Software Foundation, Inc.\n" |
493e2a69 MS |
3411 | "gdbserver is free software, covered by the " |
3412 | "GNU General Public License.\n" | |
dd24457d | 3413 | "This gdbserver was configured as \"%s\"\n", |
c16158bc | 3414 | PKGVERSION, version, host_name); |
dd24457d DJ |
3415 | } |
3416 | ||
0bc68c49 | 3417 | static void |
c16158bc | 3418 | gdbserver_usage (FILE *stream) |
0bc68c49 | 3419 | { |
c16158bc JM |
3420 | fprintf (stream, "Usage:\tgdbserver [OPTIONS] COMM PROG [ARGS ...]\n" |
3421 | "\tgdbserver [OPTIONS] --attach COMM PID\n" | |
3422 | "\tgdbserver [OPTIONS] --multi COMM\n" | |
3423 | "\n" | |
41f98f02 PA |
3424 | "COMM may either be a tty device (for serial debugging),\n" |
3425 | "HOST:PORT to listen for a TCP connection, or '-' or 'stdio' to use \n" | |
3426 | "stdin/stdout of gdbserver.\n" | |
3427 | "PROG is the executable program. ARGS are arguments passed to inferior.\n" | |
3428 | "PID is the process ID to attach to, when --attach is specified.\n" | |
3429 | "\n" | |
3430 | "Operating modes:\n" | |
3431 | "\n" | |
3432 | " --attach Attach to running process PID.\n" | |
3433 | " --multi Start server without a specific program, and\n" | |
3434 | " only quit when explicitly commanded.\n" | |
3435 | " --once Exit after the first connection has closed.\n" | |
3436 | " --help Print this message and then exit.\n" | |
3437 | " --version Display version information and exit.\n" | |
3438 | "\n" | |
3439 | "Other options:\n" | |
3440 | "\n" | |
3441 | " --wrapper WRAPPER -- Run WRAPPER to start new programs.\n" | |
3442 | " --disable-randomization\n" | |
3443 | " Run PROG with address space randomization disabled.\n" | |
3444 | " --no-disable-randomization\n" | |
3445 | " Don't disable address space randomization when\n" | |
3446 | " starting PROG.\n" | |
aefd8b33 SDJ |
3447 | " --startup-with-shell\n" |
3448 | " Start PROG using a shell. I.e., execs a shell that\n" | |
3449 | " then execs PROG. (default)\n" | |
3450 | " --no-startup-with-shell\n" | |
3451 | " Exec PROG directly instead of using a shell.\n" | |
3452 | " Disables argument globbing and variable substitution\n" | |
3453 | " on UNIX-like systems.\n" | |
41f98f02 PA |
3454 | "\n" |
3455 | "Debug options:\n" | |
c16158bc | 3456 | "\n" |
62709adf | 3457 | " --debug Enable general debugging output.\n" |
227a9e65 | 3458 | " --debug-format=OPT1[,OPT2,...]\n" |
87ce2a04 DE |
3459 | " Specify extra content in debugging output.\n" |
3460 | " Options:\n" | |
3461 | " all\n" | |
3462 | " none\n" | |
87ce2a04 | 3463 | " timestamp\n" |
62709adf | 3464 | " --remote-debug Enable remote protocol debugging output.\n" |
227a9e65 | 3465 | " --disable-packet=OPT1[,OPT2,...]\n" |
41f98f02 PA |
3466 | " Disable support for RSP packets or features.\n" |
3467 | " Options:\n" | |
3468 | " vCont, Tthread, qC, qfThreadInfo and \n" | |
3469 | " threads (disable all threading packets).\n" | |
3470 | "\n" | |
3471 | "For more information, consult the GDB manual (available as on-line \n" | |
3472 | "info or a printed manual).\n"); | |
c16158bc JM |
3473 | if (REPORT_BUGS_TO[0] && stream == stdout) |
3474 | fprintf (stream, "Report bugs to \"%s\".\n", REPORT_BUGS_TO); | |
0bc68c49 DJ |
3475 | } |
3476 | ||
db42f210 PA |
3477 | static void |
3478 | gdbserver_show_disableable (FILE *stream) | |
3479 | { | |
3480 | fprintf (stream, "Disableable packets:\n" | |
3481 | " vCont \tAll vCont packets\n" | |
3482 | " qC \tQuerying the current thread\n" | |
3483 | " qfThreadInfo\tThread listing\n" | |
493e2a69 MS |
3484 | " Tthread \tPassing the thread specifier in the " |
3485 | "T stop reply packet\n" | |
db42f210 PA |
3486 | " threads \tAll of the above\n"); |
3487 | } | |
3488 | ||
95954743 | 3489 | static void |
9179355e | 3490 | kill_inferior_callback (process_info *process) |
95954743 | 3491 | { |
a780ef4f PA |
3492 | kill_inferior (process); |
3493 | discard_queued_stop_replies (ptid_t (process->pid)); | |
95954743 PA |
3494 | } |
3495 | ||
9f767825 DE |
3496 | /* Call this when exiting gdbserver with possible inferiors that need |
3497 | to be killed or detached from. */ | |
3498 | ||
3499 | static void | |
3500 | detach_or_kill_for_exit (void) | |
3501 | { | |
3502 | /* First print a list of the inferiors we will be killing/detaching. | |
3503 | This is to assist the user, for example, in case the inferior unexpectedly | |
3504 | dies after we exit: did we screw up or did the inferior exit on its own? | |
3505 | Having this info will save some head-scratching. */ | |
3506 | ||
3507 | if (have_started_inferiors_p ()) | |
3508 | { | |
3509 | fprintf (stderr, "Killing process(es):"); | |
9179355e SM |
3510 | |
3511 | for_each_process ([] (process_info *process) { | |
3512 | if (!process->attached) | |
3513 | fprintf (stderr, " %d", process->pid); | |
3514 | }); | |
3515 | ||
9f767825 DE |
3516 | fprintf (stderr, "\n"); |
3517 | } | |
3518 | if (have_attached_inferiors_p ()) | |
3519 | { | |
3520 | fprintf (stderr, "Detaching process(es):"); | |
9179355e SM |
3521 | |
3522 | for_each_process ([] (process_info *process) { | |
3523 | if (process->attached) | |
3524 | fprintf (stderr, " %d", process->pid); | |
3525 | }); | |
3526 | ||
9f767825 DE |
3527 | fprintf (stderr, "\n"); |
3528 | } | |
3529 | ||
3530 | /* Now we can kill or detach the inferiors. */ | |
9179355e SM |
3531 | for_each_process ([] (process_info *process) { |
3532 | int pid = process->pid; | |
3533 | ||
3534 | if (process->attached) | |
ef2ddb33 | 3535 | detach_inferior (process); |
9179355e | 3536 | else |
a780ef4f | 3537 | kill_inferior (process); |
9f767825 | 3538 | |
f2907e49 | 3539 | discard_queued_stop_replies (ptid_t (pid)); |
9179355e | 3540 | }); |
9f767825 DE |
3541 | } |
3542 | ||
860789c7 GB |
3543 | /* Value that will be passed to exit(3) when gdbserver exits. */ |
3544 | static int exit_code; | |
3545 | ||
37991b4f TT |
3546 | /* Wrapper for detach_or_kill_for_exit that catches and prints |
3547 | errors. */ | |
860789c7 GB |
3548 | |
3549 | static void | |
37991b4f | 3550 | detach_or_kill_for_exit_cleanup () |
860789c7 | 3551 | { |
a70b8144 | 3552 | try |
860789c7 GB |
3553 | { |
3554 | detach_or_kill_for_exit (); | |
3555 | } | |
a70b8144 | 3556 | catch (const gdb_exception_RETURN_MASK_ALL &exception) |
860789c7 GB |
3557 | { |
3558 | fflush (stdout); | |
3d6e9d23 TT |
3559 | fprintf (stderr, "Detach or kill failed: %s\n", |
3560 | exception.what ()); | |
860789c7 GB |
3561 | exit_code = 1; |
3562 | } | |
3563 | } | |
3564 | ||
3565 | /* Main function. This is called by the real "main" function, | |
3566 | wrapped in a TRY_CATCH that handles any uncaught exceptions. */ | |
3567 | ||
3568 | static void ATTRIBUTE_NORETURN | |
3569 | captured_main (int argc, char *argv[]) | |
c906108c | 3570 | { |
0729219d DJ |
3571 | int bad_attach; |
3572 | int pid; | |
fb32b4f7 PA |
3573 | char *arg_end; |
3574 | const char *port = NULL; | |
2d717e4f | 3575 | char **next_arg = &argv[1]; |
89dc0afd JK |
3576 | volatile int multi_mode = 0; |
3577 | volatile int attach = 0; | |
2d717e4f | 3578 | int was_running; |
6d580b63 | 3579 | bool selftest = false; |
605fd3c6 | 3580 | #if GDB_SELF_TEST |
1526853e | 3581 | const char *selftest_filter = NULL; |
605fd3c6 | 3582 | #endif |
c906108c | 3583 | |
b4987c95 | 3584 | current_directory = getcwd (NULL, 0); |
c12a5089 SC |
3585 | client_state &cs = get_client_state (); |
3586 | ||
b4987c95 SDJ |
3587 | if (current_directory == NULL) |
3588 | { | |
81561546 | 3589 | error (_("Could not find current working directory: %s"), |
b4987c95 SDJ |
3590 | safe_strerror (errno)); |
3591 | } | |
3592 | ||
2d717e4f | 3593 | while (*next_arg != NULL && **next_arg == '-') |
dd24457d | 3594 | { |
2d717e4f DJ |
3595 | if (strcmp (*next_arg, "--version") == 0) |
3596 | { | |
3597 | gdbserver_version (); | |
3598 | exit (0); | |
3599 | } | |
3600 | else if (strcmp (*next_arg, "--help") == 0) | |
3601 | { | |
c16158bc | 3602 | gdbserver_usage (stdout); |
2d717e4f DJ |
3603 | exit (0); |
3604 | } | |
3605 | else if (strcmp (*next_arg, "--attach") == 0) | |
3606 | attach = 1; | |
3607 | else if (strcmp (*next_arg, "--multi") == 0) | |
3608 | multi_mode = 1; | |
ccd213ac DJ |
3609 | else if (strcmp (*next_arg, "--wrapper") == 0) |
3610 | { | |
7c5ded6a SDJ |
3611 | char **tmp; |
3612 | ||
ccd213ac DJ |
3613 | next_arg++; |
3614 | ||
7c5ded6a | 3615 | tmp = next_arg; |
ccd213ac | 3616 | while (*next_arg != NULL && strcmp (*next_arg, "--") != 0) |
7c5ded6a | 3617 | { |
2090129c SDJ |
3618 | wrapper_argv += *next_arg; |
3619 | wrapper_argv += ' '; | |
7c5ded6a SDJ |
3620 | next_arg++; |
3621 | } | |
ccd213ac | 3622 | |
2090129c SDJ |
3623 | if (!wrapper_argv.empty ()) |
3624 | { | |
3625 | /* Erase the last whitespace. */ | |
3626 | wrapper_argv.erase (wrapper_argv.end () - 1); | |
3627 | } | |
3628 | ||
7c5ded6a | 3629 | if (next_arg == tmp || *next_arg == NULL) |
ccd213ac | 3630 | { |
c16158bc | 3631 | gdbserver_usage (stderr); |
ccd213ac DJ |
3632 | exit (1); |
3633 | } | |
3634 | ||
3635 | /* Consume the "--". */ | |
3636 | *next_arg = NULL; | |
3637 | } | |
2d717e4f DJ |
3638 | else if (strcmp (*next_arg, "--debug") == 0) |
3639 | debug_threads = 1; | |
61012eef | 3640 | else if (startswith (*next_arg, "--debug-format=")) |
87ce2a04 | 3641 | { |
2cc05030 | 3642 | std::string error_msg |
87ce2a04 DE |
3643 | = parse_debug_format_options ((*next_arg) |
3644 | + sizeof ("--debug-format=") - 1, 0); | |
3645 | ||
2cc05030 | 3646 | if (!error_msg.empty ()) |
87ce2a04 | 3647 | { |
2cc05030 | 3648 | fprintf (stderr, "%s", error_msg.c_str ()); |
87ce2a04 DE |
3649 | exit (1); |
3650 | } | |
3651 | } | |
62709adf PA |
3652 | else if (strcmp (*next_arg, "--remote-debug") == 0) |
3653 | remote_debug = 1; | |
db42f210 PA |
3654 | else if (strcmp (*next_arg, "--disable-packet") == 0) |
3655 | { | |
3656 | gdbserver_show_disableable (stdout); | |
3657 | exit (0); | |
3658 | } | |
61012eef | 3659 | else if (startswith (*next_arg, "--disable-packet=")) |
db42f210 PA |
3660 | { |
3661 | char *packets, *tok; | |
3662 | ||
3663 | packets = *next_arg += sizeof ("--disable-packet=") - 1; | |
3664 | for (tok = strtok (packets, ","); | |
3665 | tok != NULL; | |
3666 | tok = strtok (NULL, ",")) | |
3667 | { | |
3668 | if (strcmp ("vCont", tok) == 0) | |
3669 | disable_packet_vCont = 1; | |
3670 | else if (strcmp ("Tthread", tok) == 0) | |
3671 | disable_packet_Tthread = 1; | |
3672 | else if (strcmp ("qC", tok) == 0) | |
3673 | disable_packet_qC = 1; | |
3674 | else if (strcmp ("qfThreadInfo", tok) == 0) | |
3675 | disable_packet_qfThreadInfo = 1; | |
3676 | else if (strcmp ("threads", tok) == 0) | |
3677 | { | |
3678 | disable_packet_vCont = 1; | |
3679 | disable_packet_Tthread = 1; | |
3680 | disable_packet_qC = 1; | |
3681 | disable_packet_qfThreadInfo = 1; | |
3682 | } | |
3683 | else | |
3684 | { | |
3685 | fprintf (stderr, "Don't know how to disable \"%s\".\n\n", | |
3686 | tok); | |
3687 | gdbserver_show_disableable (stderr); | |
3688 | exit (1); | |
3689 | } | |
3690 | } | |
3691 | } | |
e0f9f062 DE |
3692 | else if (strcmp (*next_arg, "-") == 0) |
3693 | { | |
3694 | /* "-" specifies a stdio connection and is a form of port | |
3695 | specification. */ | |
fb32b4f7 PA |
3696 | port = STDIO_CONNECTION_NAME; |
3697 | next_arg++; | |
e0f9f062 DE |
3698 | break; |
3699 | } | |
03583c20 | 3700 | else if (strcmp (*next_arg, "--disable-randomization") == 0) |
c12a5089 | 3701 | cs.disable_randomization = 1; |
03583c20 | 3702 | else if (strcmp (*next_arg, "--no-disable-randomization") == 0) |
c12a5089 | 3703 | cs.disable_randomization = 0; |
aefd8b33 SDJ |
3704 | else if (strcmp (*next_arg, "--startup-with-shell") == 0) |
3705 | startup_with_shell = true; | |
3706 | else if (strcmp (*next_arg, "--no-startup-with-shell") == 0) | |
3707 | startup_with_shell = false; | |
03f2bd59 JK |
3708 | else if (strcmp (*next_arg, "--once") == 0) |
3709 | run_once = 1; | |
6d580b63 YQ |
3710 | else if (strcmp (*next_arg, "--selftest") == 0) |
3711 | selftest = true; | |
1526853e SM |
3712 | else if (startswith (*next_arg, "--selftest=")) |
3713 | { | |
3714 | selftest = true; | |
605fd3c6 | 3715 | #if GDB_SELF_TEST |
1526853e | 3716 | selftest_filter = *next_arg + strlen ("--selftest="); |
605fd3c6 | 3717 | #endif |
1526853e | 3718 | } |
2d717e4f DJ |
3719 | else |
3720 | { | |
3721 | fprintf (stderr, "Unknown argument: %s\n", *next_arg); | |
3722 | exit (1); | |
3723 | } | |
dd24457d | 3724 | |
2d717e4f DJ |
3725 | next_arg++; |
3726 | continue; | |
dd24457d DJ |
3727 | } |
3728 | ||
fb32b4f7 PA |
3729 | if (port == NULL) |
3730 | { | |
3731 | port = *next_arg; | |
3732 | next_arg++; | |
3733 | } | |
6d580b63 YQ |
3734 | if ((port == NULL || (!attach && !multi_mode && *next_arg == NULL)) |
3735 | && !selftest) | |
2d717e4f | 3736 | { |
c16158bc | 3737 | gdbserver_usage (stderr); |
2d717e4f DJ |
3738 | exit (1); |
3739 | } | |
3740 | ||
602e3198 JK |
3741 | /* Remember stdio descriptors. LISTEN_DESC must not be listed, it will be |
3742 | opened by remote_prepare. */ | |
3743 | notice_open_fds (); | |
3744 | ||
e379cee6 | 3745 | save_original_signals_state (false); |
f348d89a | 3746 | |
e0f9f062 DE |
3747 | /* We need to know whether the remote connection is stdio before |
3748 | starting the inferior. Inferiors created in this scenario have | |
3749 | stdin,stdout redirected. So do this here before we call | |
3750 | start_inferior. */ | |
6d580b63 YQ |
3751 | if (port != NULL) |
3752 | remote_prepare (port); | |
e0f9f062 | 3753 | |
0729219d DJ |
3754 | bad_attach = 0; |
3755 | pid = 0; | |
2d717e4f DJ |
3756 | |
3757 | /* --attach used to come after PORT, so allow it there for | |
3758 | compatibility. */ | |
3759 | if (*next_arg != NULL && strcmp (*next_arg, "--attach") == 0) | |
45b7b345 | 3760 | { |
2d717e4f DJ |
3761 | attach = 1; |
3762 | next_arg++; | |
45b7b345 DJ |
3763 | } |
3764 | ||
2d717e4f DJ |
3765 | if (attach |
3766 | && (*next_arg == NULL | |
3767 | || (*next_arg)[0] == '\0' | |
3768 | || (pid = strtoul (*next_arg, &arg_end, 0)) == 0 | |
3769 | || *arg_end != '\0' | |
3770 | || next_arg[1] != NULL)) | |
3771 | bad_attach = 1; | |
3772 | ||
3773 | if (bad_attach) | |
dd24457d | 3774 | { |
c16158bc | 3775 | gdbserver_usage (stderr); |
dd24457d DJ |
3776 | exit (1); |
3777 | } | |
c906108c | 3778 | |
2090129c | 3779 | /* Gather information about the environment. */ |
9a6c7d9c | 3780 | our_environ = gdb_environ::from_host_environ (); |
2090129c | 3781 | |
a20d5e98 | 3782 | initialize_async_io (); |
4ce44c66 | 3783 | initialize_low (); |
2090129c | 3784 | have_job_control (); |
60f662b0 | 3785 | initialize_event_loop (); |
219f2f23 PA |
3786 | if (target_supports_tracepoints ()) |
3787 | initialize_tracepoint (); | |
465a859e | 3788 | initialize_notif (); |
4ce44c66 | 3789 | |
224c3ddb | 3790 | mem_buf = (unsigned char *) xmalloc (PBUFSIZ); |
0a30fbc4 | 3791 | |
6d580b63 YQ |
3792 | if (selftest) |
3793 | { | |
605fd3c6 | 3794 | #if GDB_SELF_TEST |
1526853e | 3795 | selftests::run_tests (selftest_filter); |
605fd3c6 | 3796 | #else |
8ecfd7bd | 3797 | printf (_("Selftests have been disabled for this build.\n")); |
605fd3c6 | 3798 | #endif |
6d580b63 YQ |
3799 | throw_quit ("Quit"); |
3800 | } | |
3801 | ||
2d717e4f | 3802 | if (pid == 0 && *next_arg != NULL) |
45b7b345 | 3803 | { |
2d717e4f DJ |
3804 | int i, n; |
3805 | ||
3806 | n = argc - (next_arg - argv); | |
25e3c82c | 3807 | program_path.set (gdb::unique_xmalloc_ptr<char> (xstrdup (next_arg[0]))); |
2090129c SDJ |
3808 | for (i = 1; i < n; i++) |
3809 | program_args.push_back (xstrdup (next_arg[i])); | |
3810 | program_args.push_back (NULL); | |
2d717e4f | 3811 | |
45b7b345 | 3812 | /* Wait till we are at first instruction in program. */ |
25e3c82c | 3813 | create_inferior (program_path.get (), program_args); |
c906108c | 3814 | |
c588c53c MS |
3815 | /* We are now (hopefully) stopped at the first instruction of |
3816 | the target process. This assumes that the target process was | |
3817 | successfully created. */ | |
45b7b345 | 3818 | } |
2d717e4f DJ |
3819 | else if (pid != 0) |
3820 | { | |
5b1c542e | 3821 | if (attach_inferior (pid) == -1) |
2d717e4f DJ |
3822 | error ("Attaching not supported on this target"); |
3823 | ||
3824 | /* Otherwise succeeded. */ | |
3825 | } | |
45b7b345 DJ |
3826 | else |
3827 | { | |
c12a5089 SC |
3828 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
3829 | cs.last_status.value.integer = 0; | |
3830 | cs.last_ptid = minus_one_ptid; | |
45b7b345 | 3831 | } |
37991b4f TT |
3832 | |
3833 | SCOPE_EXIT { detach_or_kill_for_exit_cleanup (); }; | |
c906108c | 3834 | |
311de423 PA |
3835 | /* Don't report shared library events on the initial connection, |
3836 | even if some libraries are preloaded. Avoids the "stopped by | |
3837 | shared library event" notice on gdb side. */ | |
3838 | dlls_changed = 0; | |
3839 | ||
c12a5089 SC |
3840 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
3841 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
2d717e4f DJ |
3842 | was_running = 0; |
3843 | else | |
3844 | was_running = 1; | |
3845 | ||
3846 | if (!was_running && !multi_mode) | |
860789c7 | 3847 | error ("No program to debug"); |
c588c53c | 3848 | |
c906108c SS |
3849 | while (1) |
3850 | { | |
c12a5089 SC |
3851 | cs.noack_mode = 0; |
3852 | cs.multi_process = 0; | |
3853 | cs.report_fork_events = 0; | |
3854 | cs.report_vfork_events = 0; | |
3855 | cs.report_exec_events = 0; | |
8336d594 | 3856 | /* Be sure we're out of tfind mode. */ |
c12a5089 SC |
3857 | cs.current_traceframe = -1; |
3858 | cs.cont_thread = null_ptid; | |
3859 | cs.swbreak_feature = 0; | |
3860 | cs.hwbreak_feature = 0; | |
3861 | cs.vCont_supported = 0; | |
bd99dc85 | 3862 | |
2d717e4f | 3863 | remote_open (port); |
c906108c | 3864 | |
a70b8144 | 3865 | try |
2d717e4f | 3866 | { |
860789c7 GB |
3867 | /* Wait for events. This will return when all event sources |
3868 | are removed from the event loop. */ | |
3869 | start_event_loop (); | |
2d717e4f | 3870 | |
860789c7 | 3871 | /* If an exit was requested (using the "monitor exit" |
fddedbe6 PA |
3872 | command), terminate now. */ |
3873 | if (exit_requested) | |
3874 | throw_quit ("Quit"); | |
3875 | ||
3876 | /* The only other way to get here is for getpkt to fail: | |
3877 | ||
3878 | - If --once was specified, we're done. | |
bd99dc85 | 3879 | |
fddedbe6 PA |
3880 | - If not in extended-remote mode, and we're no longer |
3881 | debugging anything, simply exit: GDB has disconnected | |
3882 | after processing the last process exit. | |
3883 | ||
3884 | - Otherwise, close the connection and reopen it at the | |
3885 | top of the loop. */ | |
3886 | if (run_once || (!extended_protocol && !target_running ())) | |
860789c7 | 3887 | throw_quit ("Quit"); |
bd99dc85 | 3888 | |
860789c7 GB |
3889 | fprintf (stderr, |
3890 | "Remote side has terminated connection. " | |
3891 | "GDBserver will reopen the connection.\n"); | |
8336d594 | 3892 | |
860789c7 GB |
3893 | /* Get rid of any pending statuses. An eventual reconnection |
3894 | (by the same GDB instance or another) will refresh all its | |
3895 | state from scratch. */ | |
465a859e | 3896 | discard_queued_stop_replies (minus_one_ptid); |
f0045347 SM |
3897 | for_each_thread ([] (thread_info *thread) |
3898 | { | |
3899 | thread->status_pending_p = 0; | |
3900 | }); | |
9939e131 | 3901 | |
860789c7 | 3902 | if (tracing) |
8336d594 | 3903 | { |
860789c7 | 3904 | if (disconnected_tracing) |
8336d594 | 3905 | { |
860789c7 GB |
3906 | /* Try to enable non-stop/async mode, so we we can |
3907 | both wait for an async socket accept, and handle | |
3908 | async target events simultaneously. There's also | |
3909 | no point either in having the target always stop | |
3910 | all threads, when we're going to pass signals | |
3911 | down without informing GDB. */ | |
3912 | if (!non_stop) | |
3913 | { | |
3914 | if (start_non_stop (1)) | |
3915 | non_stop = 1; | |
3916 | ||
3917 | /* Detaching implicitly resumes all threads; | |
3918 | simply disconnecting does not. */ | |
3919 | } | |
3920 | } | |
3921 | else | |
3922 | { | |
3923 | fprintf (stderr, | |
3924 | "Disconnected tracing disabled; " | |
3925 | "stopping trace run.\n"); | |
3926 | stop_tracing (); | |
8336d594 PA |
3927 | } |
3928 | } | |
860789c7 | 3929 | } |
a70b8144 | 3930 | catch (const gdb_exception_RETURN_MASK_ERROR &exception) |
860789c7 | 3931 | { |
608a1e46 | 3932 | fflush (stdout); |
3d6e9d23 | 3933 | fprintf (stderr, "gdbserver: %s\n", exception.what ()); |
608a1e46 | 3934 | |
860789c7 | 3935 | if (response_needed) |
8336d594 | 3936 | { |
c12a5089 SC |
3937 | write_enn (cs.own_buf); |
3938 | putpkt (cs.own_buf); | |
8336d594 | 3939 | } |
608a1e46 PA |
3940 | |
3941 | if (run_once) | |
3942 | throw_quit ("Quit"); | |
8336d594 | 3943 | } |
bd99dc85 PA |
3944 | } |
3945 | } | |
01f9e8fa | 3946 | |
860789c7 GB |
3947 | /* Main function. */ |
3948 | ||
3949 | int | |
3950 | main (int argc, char *argv[]) | |
3951 | { | |
860789c7 | 3952 | |
a70b8144 | 3953 | try |
860789c7 GB |
3954 | { |
3955 | captured_main (argc, argv); | |
3956 | } | |
a70b8144 | 3957 | catch (const gdb_exception_RETURN_MASK_ALL &exception) |
860789c7 | 3958 | { |
492d29ea PA |
3959 | if (exception.reason == RETURN_ERROR) |
3960 | { | |
3961 | fflush (stdout); | |
3d6e9d23 | 3962 | fprintf (stderr, "%s\n", exception.what ()); |
492d29ea PA |
3963 | fprintf (stderr, "Exiting\n"); |
3964 | exit_code = 1; | |
3965 | } | |
3966 | ||
3967 | exit (exit_code); | |
860789c7 GB |
3968 | } |
3969 | ||
492d29ea | 3970 | gdb_assert_not_reached ("captured_main should never return"); |
860789c7 GB |
3971 | } |
3972 | ||
802e8e6d PA |
3973 | /* Process options coming from Z packets for a breakpoint. PACKET is |
3974 | the packet buffer. *PACKET is updated to point to the first char | |
3975 | after the last processed option. */ | |
9f3a5c85 LM |
3976 | |
3977 | static void | |
256642e8 | 3978 | process_point_options (struct gdb_breakpoint *bp, const char **packet) |
9f3a5c85 | 3979 | { |
256642e8 | 3980 | const char *dataptr = *packet; |
d3ce09f5 | 3981 | int persist; |
9f3a5c85 LM |
3982 | |
3983 | /* Check if data has the correct format. */ | |
3984 | if (*dataptr != ';') | |
3985 | return; | |
3986 | ||
3987 | dataptr++; | |
3988 | ||
3989 | while (*dataptr) | |
3990 | { | |
d3ce09f5 SS |
3991 | if (*dataptr == ';') |
3992 | ++dataptr; | |
3993 | ||
3994 | if (*dataptr == 'X') | |
9f3a5c85 | 3995 | { |
d3ce09f5 | 3996 | /* Conditional expression. */ |
d171ca78 | 3997 | if (debug_threads) |
87ce2a04 | 3998 | debug_printf ("Found breakpoint condition.\n"); |
802e8e6d | 3999 | if (!add_breakpoint_condition (bp, &dataptr)) |
8424cc97 | 4000 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 | 4001 | } |
61012eef | 4002 | else if (startswith (dataptr, "cmds:")) |
d3ce09f5 SS |
4003 | { |
4004 | dataptr += strlen ("cmds:"); | |
4005 | if (debug_threads) | |
87ce2a04 | 4006 | debug_printf ("Found breakpoint commands %s.\n", dataptr); |
d3ce09f5 SS |
4007 | persist = (*dataptr == '1'); |
4008 | dataptr += 2; | |
802e8e6d | 4009 | if (add_breakpoint_commands (bp, &dataptr, persist)) |
8424cc97 | 4010 | dataptr = strchrnul (dataptr, ';'); |
d3ce09f5 SS |
4011 | } |
4012 | else | |
4013 | { | |
d3ce09f5 SS |
4014 | fprintf (stderr, "Unknown token %c, ignoring.\n", |
4015 | *dataptr); | |
78a99e91 | 4016 | /* Skip tokens until we find one that we recognize. */ |
8424cc97 | 4017 | dataptr = strchrnul (dataptr, ';'); |
9f3a5c85 | 4018 | } |
9f3a5c85 LM |
4019 | } |
4020 | *packet = dataptr; | |
4021 | } | |
4022 | ||
bd99dc85 PA |
4023 | /* Event loop callback that handles a serial event. The first byte in |
4024 | the serial buffer gets us here. We expect characters to arrive at | |
4025 | a brisk pace, so we read the rest of the packet with a blocking | |
4026 | getpkt call. */ | |
01f9e8fa | 4027 | |
8336d594 | 4028 | static int |
bd99dc85 PA |
4029 | process_serial_event (void) |
4030 | { | |
c12a5089 | 4031 | client_state &cs = get_client_state (); |
bd99dc85 PA |
4032 | int signal; |
4033 | unsigned int len; | |
4034 | CORE_ADDR mem_addr; | |
4035 | unsigned char sig; | |
4036 | int packet_len; | |
4037 | int new_packet_len = -1; | |
4038 | ||
bd99dc85 PA |
4039 | disable_async_io (); |
4040 | ||
4041 | response_needed = 0; | |
c12a5089 | 4042 | packet_len = getpkt (cs.own_buf); |
bd99dc85 PA |
4043 | if (packet_len <= 0) |
4044 | { | |
bd99dc85 | 4045 | remote_close (); |
8336d594 PA |
4046 | /* Force an event loop break. */ |
4047 | return -1; | |
bd99dc85 PA |
4048 | } |
4049 | response_needed = 1; | |
4050 | ||
c12a5089 | 4051 | char ch = cs.own_buf[0]; |
bd99dc85 PA |
4052 | switch (ch) |
4053 | { | |
4054 | case 'q': | |
c12a5089 | 4055 | handle_query (cs.own_buf, packet_len, &new_packet_len); |
bd99dc85 PA |
4056 | break; |
4057 | case 'Q': | |
c12a5089 | 4058 | handle_general_set (cs.own_buf); |
bd99dc85 PA |
4059 | break; |
4060 | case 'D': | |
c12a5089 | 4061 | handle_detach (cs.own_buf); |
bd99dc85 PA |
4062 | break; |
4063 | case '!': | |
4064 | extended_protocol = 1; | |
c12a5089 | 4065 | write_ok (cs.own_buf); |
bd99dc85 PA |
4066 | break; |
4067 | case '?': | |
c12a5089 | 4068 | handle_status (cs.own_buf); |
bd99dc85 PA |
4069 | break; |
4070 | case 'H': | |
c12a5089 | 4071 | if (cs.own_buf[1] == 'c' || cs.own_buf[1] == 'g' || cs.own_buf[1] == 's') |
bd99dc85 | 4072 | { |
c12a5089 | 4073 | require_running_or_break (cs.own_buf); |
95954743 | 4074 | |
c12a5089 | 4075 | ptid_t thread_id = read_ptid (&cs.own_buf[2], NULL); |
95954743 | 4076 | |
96cde54f | 4077 | if (thread_id == null_ptid || thread_id == minus_one_ptid) |
95954743 | 4078 | thread_id = null_ptid; |
96cde54f | 4079 | else if (thread_id.is_pid ()) |
95954743 | 4080 | { |
96cde54f SM |
4081 | /* The ptid represents a pid. */ |
4082 | thread_info *thread = find_any_thread_of_pid (thread_id.pid ()); | |
785922a5 SM |
4083 | |
4084 | if (thread == NULL) | |
95954743 | 4085 | { |
c12a5089 | 4086 | write_enn (cs.own_buf); |
95954743 PA |
4087 | break; |
4088 | } | |
4089 | ||
9c80ecd6 | 4090 | thread_id = thread->id; |
95954743 | 4091 | } |
bd99dc85 PA |
4092 | else |
4093 | { | |
96cde54f SM |
4094 | /* The ptid represents a lwp/tid. */ |
4095 | if (find_thread_ptid (thread_id) == NULL) | |
c906108c | 4096 | { |
c12a5089 | 4097 | write_enn (cs.own_buf); |
c906108c SS |
4098 | break; |
4099 | } | |
c906108c SS |
4100 | } |
4101 | ||
c12a5089 | 4102 | if (cs.own_buf[1] == 'g') |
c906108c | 4103 | { |
d7e15655 | 4104 | if (thread_id == null_ptid) |
c906108c | 4105 | { |
bd99dc85 PA |
4106 | /* GDB is telling us to choose any thread. Check if |
4107 | the currently selected thread is still valid. If | |
4108 | it is not, select the first available. */ | |
c12a5089 | 4109 | thread_info *thread = find_thread_ptid (cs.general_thread); |
bd99dc85 | 4110 | if (thread == NULL) |
f0db101d | 4111 | thread = get_first_thread (); |
9c80ecd6 | 4112 | thread_id = thread->id; |
c906108c | 4113 | } |
bd99dc85 | 4114 | |
c12a5089 | 4115 | cs.general_thread = thread_id; |
f557a88a | 4116 | set_desired_thread (); |
f0db101d | 4117 | gdb_assert (current_thread != NULL); |
c906108c | 4118 | } |
c12a5089 SC |
4119 | else if (cs.own_buf[1] == 'c') |
4120 | cs.cont_thread = thread_id; | |
c906108c | 4121 | |
c12a5089 | 4122 | write_ok (cs.own_buf); |
bd99dc85 PA |
4123 | } |
4124 | else | |
4125 | { | |
4126 | /* Silently ignore it so that gdb can extend the protocol | |
4127 | without compatibility headaches. */ | |
c12a5089 | 4128 | cs.own_buf[0] = '\0'; |
2d717e4f | 4129 | } |
bd99dc85 PA |
4130 | break; |
4131 | case 'g': | |
c12a5089 SC |
4132 | require_running_or_break (cs.own_buf); |
4133 | if (cs.current_traceframe >= 0) | |
219f2f23 | 4134 | { |
3aee8918 PA |
4135 | struct regcache *regcache |
4136 | = new_register_cache (current_target_desc ()); | |
219f2f23 | 4137 | |
c12a5089 | 4138 | if (fetch_traceframe_registers (cs.current_traceframe, |
219f2f23 | 4139 | regcache, -1) == 0) |
c12a5089 | 4140 | registers_to_string (regcache, cs.own_buf); |
219f2f23 | 4141 | else |
c12a5089 | 4142 | write_enn (cs.own_buf); |
219f2f23 PA |
4143 | free_register_cache (regcache); |
4144 | } | |
4145 | else | |
4146 | { | |
4147 | struct regcache *regcache; | |
4148 | ||
f557a88a | 4149 | if (!set_desired_thread ()) |
c12a5089 | 4150 | write_enn (cs.own_buf); |
f0db101d PA |
4151 | else |
4152 | { | |
4153 | regcache = get_thread_regcache (current_thread, 1); | |
c12a5089 | 4154 | registers_to_string (regcache, cs.own_buf); |
f0db101d | 4155 | } |
219f2f23 | 4156 | } |
bd99dc85 PA |
4157 | break; |
4158 | case 'G': | |
c12a5089 SC |
4159 | require_running_or_break (cs.own_buf); |
4160 | if (cs.current_traceframe >= 0) | |
4161 | write_enn (cs.own_buf); | |
219f2f23 PA |
4162 | else |
4163 | { | |
442ea881 PA |
4164 | struct regcache *regcache; |
4165 | ||
f557a88a | 4166 | if (!set_desired_thread ()) |
c12a5089 | 4167 | write_enn (cs.own_buf); |
f0db101d PA |
4168 | else |
4169 | { | |
4170 | regcache = get_thread_regcache (current_thread, 1); | |
c12a5089 SC |
4171 | registers_from_string (regcache, &cs.own_buf[1]); |
4172 | write_ok (cs.own_buf); | |
f0db101d | 4173 | } |
442ea881 | 4174 | } |
bd99dc85 PA |
4175 | break; |
4176 | case 'm': | |
da4ae14a TT |
4177 | { |
4178 | require_running_or_break (cs.own_buf); | |
4179 | decode_m_packet (&cs.own_buf[1], &mem_addr, &len); | |
4180 | int res = gdb_read_memory (mem_addr, mem_buf, len); | |
4181 | if (res < 0) | |
4182 | write_enn (cs.own_buf); | |
4183 | else | |
4184 | bin2hex (mem_buf, cs.own_buf, res); | |
4185 | } | |
bd99dc85 PA |
4186 | break; |
4187 | case 'M': | |
c12a5089 SC |
4188 | require_running_or_break (cs.own_buf); |
4189 | decode_M_packet (&cs.own_buf[1], &mem_addr, &len, &mem_buf); | |
90d74c30 | 4190 | if (gdb_write_memory (mem_addr, mem_buf, len) == 0) |
c12a5089 | 4191 | write_ok (cs.own_buf); |
bd99dc85 | 4192 | else |
c12a5089 | 4193 | write_enn (cs.own_buf); |
bd99dc85 PA |
4194 | break; |
4195 | case 'X': | |
c12a5089 SC |
4196 | require_running_or_break (cs.own_buf); |
4197 | if (decode_X_packet (&cs.own_buf[1], packet_len - 1, | |
fa593d66 | 4198 | &mem_addr, &len, &mem_buf) < 0 |
90d74c30 | 4199 | || gdb_write_memory (mem_addr, mem_buf, len) != 0) |
c12a5089 | 4200 | write_enn (cs.own_buf); |
bd99dc85 | 4201 | else |
c12a5089 | 4202 | write_ok (cs.own_buf); |
bd99dc85 PA |
4203 | break; |
4204 | case 'C': | |
c12a5089 SC |
4205 | require_running_or_break (cs.own_buf); |
4206 | hex2bin (cs.own_buf + 1, &sig, 1); | |
e053fbc4 PA |
4207 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4208 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4209 | else |
4210 | signal = 0; | |
c12a5089 | 4211 | myresume (cs.own_buf, 0, signal); |
bd99dc85 PA |
4212 | break; |
4213 | case 'S': | |
c12a5089 SC |
4214 | require_running_or_break (cs.own_buf); |
4215 | hex2bin (cs.own_buf + 1, &sig, 1); | |
e053fbc4 PA |
4216 | if (gdb_signal_to_host_p ((enum gdb_signal) sig)) |
4217 | signal = gdb_signal_to_host ((enum gdb_signal) sig); | |
bd99dc85 PA |
4218 | else |
4219 | signal = 0; | |
c12a5089 | 4220 | myresume (cs.own_buf, 1, signal); |
bd99dc85 PA |
4221 | break; |
4222 | case 'c': | |
c12a5089 | 4223 | require_running_or_break (cs.own_buf); |
bd99dc85 | 4224 | signal = 0; |
c12a5089 | 4225 | myresume (cs.own_buf, 0, signal); |
bd99dc85 PA |
4226 | break; |
4227 | case 's': | |
c12a5089 | 4228 | require_running_or_break (cs.own_buf); |
bd99dc85 | 4229 | signal = 0; |
c12a5089 | 4230 | myresume (cs.own_buf, 1, signal); |
bd99dc85 | 4231 | break; |
c6314022 AR |
4232 | case 'Z': /* insert_ ... */ |
4233 | /* Fallthrough. */ | |
4234 | case 'z': /* remove_ ... */ | |
bd99dc85 | 4235 | { |
bd99dc85 | 4236 | char *dataptr; |
aca22551 | 4237 | ULONGEST addr; |
27165294 | 4238 | int kind; |
c12a5089 | 4239 | char type = cs.own_buf[1]; |
c6314022 | 4240 | int res; |
d993e290 | 4241 | const int insert = ch == 'Z'; |
c12a5089 | 4242 | const char *p = &cs.own_buf[3]; |
aca22551 PA |
4243 | |
4244 | p = unpack_varlen_hex (p, &addr); | |
27165294 | 4245 | kind = strtol (p + 1, &dataptr, 16); |
c6314022 | 4246 | |
802e8e6d | 4247 | if (insert) |
d993e290 | 4248 | { |
9aa76cd0 | 4249 | struct gdb_breakpoint *bp; |
802e8e6d | 4250 | |
27165294 | 4251 | bp = set_gdb_breakpoint (type, addr, kind, &res); |
802e8e6d | 4252 | if (bp != NULL) |
9f3a5c85 | 4253 | { |
802e8e6d PA |
4254 | res = 0; |
4255 | ||
4256 | /* GDB may have sent us a list of *point parameters to | |
4257 | be evaluated on the target's side. Read such list | |
4258 | here. If we already have a list of parameters, GDB | |
4259 | is telling us to drop that list and use this one | |
4260 | instead. */ | |
0a261ed8 | 4261 | clear_breakpoint_conditions_and_commands (bp); |
256642e8 PA |
4262 | const char *options = dataptr; |
4263 | process_point_options (bp, &options); | |
9f3a5c85 | 4264 | } |
d993e290 | 4265 | } |
802e8e6d | 4266 | else |
27165294 | 4267 | res = delete_gdb_breakpoint (type, addr, kind); |
bd99dc85 | 4268 | |
c6314022 | 4269 | if (res == 0) |
c12a5089 | 4270 | write_ok (cs.own_buf); |
c6314022 AR |
4271 | else if (res == 1) |
4272 | /* Unsupported. */ | |
c12a5089 | 4273 | cs.own_buf[0] = '\0'; |
bd99dc85 | 4274 | else |
c12a5089 | 4275 | write_enn (cs.own_buf); |
bd99dc85 PA |
4276 | break; |
4277 | } | |
4278 | case 'k': | |
4279 | response_needed = 0; | |
4280 | if (!target_running ()) | |
95954743 PA |
4281 | /* The packet we received doesn't make sense - but we can't |
4282 | reply to it, either. */ | |
8336d594 | 4283 | return 0; |
c906108c | 4284 | |
95954743 | 4285 | fprintf (stderr, "Killing all inferiors\n"); |
9179355e SM |
4286 | |
4287 | for_each_process (kill_inferior_callback); | |
c906108c | 4288 | |
bd99dc85 PA |
4289 | /* When using the extended protocol, we wait with no program |
4290 | running. The traditional protocol will exit instead. */ | |
4291 | if (extended_protocol) | |
4292 | { | |
c12a5089 SC |
4293 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
4294 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
8336d594 | 4295 | return 0; |
bd99dc85 PA |
4296 | } |
4297 | else | |
8336d594 PA |
4298 | exit (0); |
4299 | ||
bd99dc85 PA |
4300 | case 'T': |
4301 | { | |
c12a5089 | 4302 | require_running_or_break (cs.own_buf); |
95954743 | 4303 | |
c12a5089 | 4304 | ptid_t thread_id = read_ptid (&cs.own_buf[1], NULL); |
96cde54f | 4305 | if (find_thread_ptid (thread_id) == NULL) |
bd99dc85 | 4306 | { |
c12a5089 | 4307 | write_enn (cs.own_buf); |
bd99dc85 PA |
4308 | break; |
4309 | } | |
4310 | ||
4311 | if (mythread_alive (thread_id)) | |
c12a5089 | 4312 | write_ok (cs.own_buf); |
bd99dc85 | 4313 | else |
c12a5089 | 4314 | write_enn (cs.own_buf); |
bd99dc85 PA |
4315 | } |
4316 | break; | |
4317 | case 'R': | |
4318 | response_needed = 0; | |
4319 | ||
4320 | /* Restarting the inferior is only supported in the extended | |
4321 | protocol. */ | |
4322 | if (extended_protocol) | |
4323 | { | |
4324 | if (target_running ()) | |
9179355e SM |
4325 | for_each_process (kill_inferior_callback); |
4326 | ||
bd99dc85 PA |
4327 | fprintf (stderr, "GDBserver restarting\n"); |
4328 | ||
4329 | /* Wait till we are at 1st instruction in prog. */ | |
25e3c82c | 4330 | if (program_path.get () != NULL) |
51aee833 | 4331 | { |
25e3c82c | 4332 | create_inferior (program_path.get (), program_args); |
2090129c | 4333 | |
c12a5089 | 4334 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
51aee833 YQ |
4335 | { |
4336 | /* Stopped at the first instruction of the target | |
4337 | process. */ | |
c12a5089 | 4338 | cs.general_thread = cs.last_ptid; |
51aee833 YQ |
4339 | } |
4340 | else | |
4341 | { | |
4342 | /* Something went wrong. */ | |
c12a5089 | 4343 | cs.general_thread = null_ptid; |
51aee833 YQ |
4344 | } |
4345 | } | |
bd99dc85 PA |
4346 | else |
4347 | { | |
c12a5089 SC |
4348 | cs.last_status.kind = TARGET_WAITKIND_EXITED; |
4349 | cs.last_status.value.sig = GDB_SIGNAL_KILL; | |
bd99dc85 | 4350 | } |
8336d594 | 4351 | return 0; |
c906108c SS |
4352 | } |
4353 | else | |
4354 | { | |
bd99dc85 PA |
4355 | /* It is a request we don't understand. Respond with an |
4356 | empty packet so that gdb knows that we don't support this | |
4357 | request. */ | |
c12a5089 | 4358 | cs.own_buf[0] = '\0'; |
bd99dc85 PA |
4359 | break; |
4360 | } | |
4361 | case 'v': | |
4362 | /* Extended (long) request. */ | |
c12a5089 | 4363 | handle_v_requests (cs.own_buf, packet_len, &new_packet_len); |
bd99dc85 PA |
4364 | break; |
4365 | ||
4366 | default: | |
4367 | /* It is a request we don't understand. Respond with an empty | |
4368 | packet so that gdb knows that we don't support this | |
4369 | request. */ | |
c12a5089 | 4370 | cs.own_buf[0] = '\0'; |
bd99dc85 PA |
4371 | break; |
4372 | } | |
4373 | ||
4374 | if (new_packet_len != -1) | |
c12a5089 | 4375 | putpkt_binary (cs.own_buf, new_packet_len); |
bd99dc85 | 4376 | else |
c12a5089 | 4377 | putpkt (cs.own_buf); |
bd99dc85 PA |
4378 | |
4379 | response_needed = 0; | |
4380 | ||
8336d594 PA |
4381 | if (exit_requested) |
4382 | return -1; | |
4383 | ||
4384 | return 0; | |
c906108c | 4385 | } |
bd99dc85 PA |
4386 | |
4387 | /* Event-loop callback for serial events. */ | |
4388 | ||
8336d594 | 4389 | int |
bd99dc85 PA |
4390 | handle_serial_event (int err, gdb_client_data client_data) |
4391 | { | |
4392 | if (debug_threads) | |
87ce2a04 | 4393 | debug_printf ("handling possible serial event\n"); |
bd99dc85 PA |
4394 | |
4395 | /* Really handle it. */ | |
8336d594 PA |
4396 | if (process_serial_event () < 0) |
4397 | return -1; | |
bd99dc85 | 4398 | |
0bfdf32f | 4399 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4400 | Important in the non-stop mode asynchronous protocol. */ |
f557a88a | 4401 | set_desired_thread (); |
8336d594 PA |
4402 | |
4403 | return 0; | |
bd99dc85 PA |
4404 | } |
4405 | ||
f2faf941 PA |
4406 | /* Push a stop notification on the notification queue. */ |
4407 | ||
4408 | static void | |
4409 | push_stop_notification (ptid_t ptid, struct target_waitstatus *status) | |
4410 | { | |
4411 | struct vstop_notif *vstop_notif = XNEW (struct vstop_notif); | |
4412 | ||
4413 | vstop_notif->status = *status; | |
4414 | vstop_notif->ptid = ptid; | |
4415 | /* Push Stop notification. */ | |
4416 | notif_push (¬if_stop, (struct notif_event *) vstop_notif); | |
4417 | } | |
4418 | ||
bd99dc85 PA |
4419 | /* Event-loop callback for target events. */ |
4420 | ||
8336d594 | 4421 | int |
bd99dc85 PA |
4422 | handle_target_event (int err, gdb_client_data client_data) |
4423 | { | |
c12a5089 | 4424 | client_state &cs = get_client_state (); |
bd99dc85 | 4425 | if (debug_threads) |
87ce2a04 | 4426 | debug_printf ("handling possible target event\n"); |
bd99dc85 | 4427 | |
c12a5089 | 4428 | cs.last_ptid = mywait (minus_one_ptid, &cs.last_status, |
95954743 | 4429 | TARGET_WNOHANG, 1); |
bd99dc85 | 4430 | |
c12a5089 | 4431 | if (cs.last_status.kind == TARGET_WAITKIND_NO_RESUMED) |
fa96cb38 | 4432 | { |
f2faf941 | 4433 | if (gdb_connected () && report_no_resumed) |
c12a5089 | 4434 | push_stop_notification (null_ptid, &cs.last_status); |
fa96cb38 | 4435 | } |
c12a5089 | 4436 | else if (cs.last_status.kind != TARGET_WAITKIND_IGNORE) |
bd99dc85 | 4437 | { |
e99b03dc | 4438 | int pid = cs.last_ptid.pid (); |
8336d594 PA |
4439 | struct process_info *process = find_process_pid (pid); |
4440 | int forward_event = !gdb_connected () || process->gdb_detached; | |
4441 | ||
c12a5089 SC |
4442 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
4443 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED) | |
f9e39928 PA |
4444 | { |
4445 | mark_breakpoints_out (process); | |
c12a5089 | 4446 | target_mourn_inferior (cs.last_ptid); |
f9e39928 | 4447 | } |
c12a5089 | 4448 | else if (cs.last_status.kind == TARGET_WAITKIND_THREAD_EXITED) |
65706a29 | 4449 | ; |
ce1a5b52 | 4450 | else |
d20a8ad9 PA |
4451 | { |
4452 | /* We're reporting this thread as stopped. Update its | |
4453 | "want-stopped" state to what the client wants, until it | |
4454 | gets a new resume action. */ | |
0bfdf32f | 4455 | current_thread->last_resume_kind = resume_stop; |
c12a5089 | 4456 | current_thread->last_status = cs.last_status; |
d20a8ad9 | 4457 | } |
8336d594 PA |
4458 | |
4459 | if (forward_event) | |
4460 | { | |
4461 | if (!target_running ()) | |
4462 | { | |
4463 | /* The last process exited. We're done. */ | |
4464 | exit (0); | |
4465 | } | |
4466 | ||
c12a5089 SC |
4467 | if (cs.last_status.kind == TARGET_WAITKIND_EXITED |
4468 | || cs.last_status.kind == TARGET_WAITKIND_SIGNALLED | |
4469 | || cs.last_status.kind == TARGET_WAITKIND_THREAD_EXITED) | |
65706a29 PA |
4470 | ; |
4471 | else | |
8336d594 PA |
4472 | { |
4473 | /* A thread stopped with a signal, but gdb isn't | |
4474 | connected to handle it. Pass it down to the | |
4475 | inferior, as if it wasn't being traced. */ | |
049a8570 | 4476 | enum gdb_signal signal; |
8336d594 PA |
4477 | |
4478 | if (debug_threads) | |
87ce2a04 DE |
4479 | debug_printf ("GDB not connected; forwarding event %d for" |
4480 | " [%s]\n", | |
c12a5089 SC |
4481 | (int) cs.last_status.kind, |
4482 | target_pid_to_str (cs.last_ptid)); | |
8336d594 | 4483 | |
c12a5089 SC |
4484 | if (cs.last_status.kind == TARGET_WAITKIND_STOPPED) |
4485 | signal = cs.last_status.value.sig; | |
65706a29 | 4486 | else |
049a8570 | 4487 | signal = GDB_SIGNAL_0; |
c12a5089 | 4488 | target_continue (cs.last_ptid, signal); |
8336d594 | 4489 | } |
8336d594 PA |
4490 | } |
4491 | else | |
c12a5089 | 4492 | push_stop_notification (cs.last_ptid, &cs.last_status); |
bd99dc85 PA |
4493 | } |
4494 | ||
0bfdf32f | 4495 | /* Be sure to not change the selected thread behind GDB's back. |
bd99dc85 | 4496 | Important in the non-stop mode asynchronous protocol. */ |
f557a88a | 4497 | set_desired_thread (); |
8336d594 PA |
4498 | |
4499 | return 0; | |
bd99dc85 | 4500 | } |
6d580b63 YQ |
4501 | |
4502 | #if GDB_SELF_TEST | |
4503 | namespace selftests | |
4504 | { | |
4505 | ||
4506 | void | |
4507 | reset () | |
4508 | {} | |
4509 | ||
4510 | } // namespace selftests | |
4511 | #endif /* GDB_SELF_TEST */ |