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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
213516ef | 3 | Copyright (C) 1988-2023 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
3b3dac9b | 30 | #include "process-stratum-target.h" |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
c906108c | 33 | #include "gdbthread.h" |
c2c6d25f | 34 | #include "remote.h" |
722247f1 | 35 | #include "remote-notif.h" |
4e052eda | 36 | #include "regcache.h" |
fd0407d6 | 37 | #include "value.h" |
76727919 | 38 | #include "observable.h" |
a77053c2 | 39 | #include "solib.h" |
37a105a1 DJ |
40 | #include "cli/cli-decode.h" |
41 | #include "cli/cli-setshow.h" | |
424163ea | 42 | #include "target-descriptions.h" |
a4453b7e | 43 | #include "gdb_bfd.h" |
268a13a5 TT |
44 | #include "gdbsupport/filestuff.h" |
45 | #include "gdbsupport/rsp-low.h" | |
6b940e6a | 46 | #include "disasm.h" |
f00aae0f | 47 | #include "location.h" |
c906108c | 48 | |
268a13a5 | 49 | #include "gdbsupport/gdb_sys_time.h" |
c906108c | 50 | |
400b5eca | 51 | #include "gdbsupport/event-loop.h" |
c2c6d25f | 52 | #include "event-top.h" |
2acceee2 | 53 | #include "inf-loop.h" |
43ff13b4 | 54 | |
c906108c SS |
55 | #include <signal.h> |
56 | #include "serial.h" | |
57 | ||
7e10abd1 | 58 | #include "gdbcore.h" |
6240bebf | 59 | |
449092f6 | 60 | #include "remote-fileio.h" |
198f946f | 61 | #include "gdbsupport/fileio.h" |
53ce3c39 | 62 | #include <sys/stat.h> |
dc146f7c | 63 | #include "xml-support.h" |
449092f6 | 64 | |
fd79ecee DJ |
65 | #include "memory-map.h" |
66 | ||
35b1e5cc SS |
67 | #include "tracepoint.h" |
68 | #include "ax.h" | |
69 | #include "ax-gdb.h" | |
268a13a5 | 70 | #include "gdbsupport/agent.h" |
9accd112 | 71 | #include "btrace.h" |
c0272db5 | 72 | #include "record-btrace.h" |
268a13a5 TT |
73 | #include "gdbsupport/scoped_restore.h" |
74 | #include "gdbsupport/environ.h" | |
75 | #include "gdbsupport/byte-vector.h" | |
4a72de73 | 76 | #include "gdbsupport/search.h" |
39ef2f62 | 77 | #include <algorithm> |
ff52c073 | 78 | #include <iterator> |
9d6eea31 | 79 | #include <unordered_map> |
93b54c8e | 80 | #include "async-event.h" |
754487e2 | 81 | #include "gdbsupport/selftest.h" |
35b1e5cc | 82 | |
f6ac5f3d PA |
83 | /* The remote target. */ |
84 | ||
d9f719f1 PA |
85 | static const char remote_doc[] = N_("\ |
86 | Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
87 | Specify the serial device it is connected to\n\ | |
88 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
89 | ||
cda09ec9 SM |
90 | /* See remote.h */ |
91 | ||
02349803 | 92 | bool remote_debug = false; |
cda09ec9 | 93 | |
6b8edb51 PA |
94 | #define OPAQUETHREADBYTES 8 |
95 | ||
96 | /* a 64 bit opaque identifier */ | |
97 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
98 | ||
99 | struct gdb_ext_thread_info; | |
100 | struct threads_listing_context; | |
101 | typedef int (*rmt_thread_action) (threadref *ref, void *context); | |
102 | struct protocol_feature; | |
103 | struct packet_reg; | |
104 | ||
105 | struct stop_reply; | |
32603266 | 106 | typedef std::unique_ptr<stop_reply> stop_reply_up; |
6b8edb51 PA |
107 | |
108 | /* Generic configuration support for packets the stub optionally | |
109 | supports. Allows the user to specify the use of the packet as well | |
110 | as allowing GDB to auto-detect support in the remote stub. */ | |
111 | ||
112 | enum packet_support | |
113 | { | |
114 | PACKET_SUPPORT_UNKNOWN = 0, | |
115 | PACKET_ENABLE, | |
116 | PACKET_DISABLE | |
117 | }; | |
118 | ||
ff52c073 CS |
119 | /* Convert the packet support auto_boolean to a name used for gdb printing. */ |
120 | ||
121 | static const char * | |
122 | get_packet_support_name (auto_boolean support) | |
123 | { | |
124 | switch (support) | |
125 | { | |
126 | case AUTO_BOOLEAN_TRUE: | |
127 | return "on"; | |
128 | case AUTO_BOOLEAN_FALSE: | |
129 | return "off"; | |
130 | case AUTO_BOOLEAN_AUTO: | |
131 | return "auto"; | |
132 | default: | |
133 | gdb_assert_not_reached ("invalid var_auto_boolean"); | |
134 | } | |
135 | } | |
136 | ||
137 | /* Convert the target type (future remote target or currently connected target) | |
138 | to a name used for gdb printing. */ | |
139 | ||
140 | static const char * | |
141 | get_target_type_name (bool target_connected) | |
142 | { | |
143 | if (target_connected) | |
144 | return _("on the current remote target"); | |
145 | else | |
146 | return _("on future remote targets"); | |
147 | } | |
148 | ||
6b8edb51 PA |
149 | /* Analyze a packet's return value and update the packet config |
150 | accordingly. */ | |
151 | ||
152 | enum packet_result | |
153 | { | |
154 | PACKET_ERROR, | |
155 | PACKET_OK, | |
156 | PACKET_UNKNOWN | |
157 | }; | |
158 | ||
ff52c073 CS |
159 | /* Enumeration of packets for a remote target. */ |
160 | ||
161 | enum { | |
162 | PACKET_vCont = 0, | |
163 | PACKET_X, | |
164 | PACKET_qSymbol, | |
165 | PACKET_P, | |
166 | PACKET_p, | |
167 | PACKET_Z0, | |
168 | PACKET_Z1, | |
169 | PACKET_Z2, | |
170 | PACKET_Z3, | |
171 | PACKET_Z4, | |
172 | PACKET_vFile_setfs, | |
173 | PACKET_vFile_open, | |
174 | PACKET_vFile_pread, | |
175 | PACKET_vFile_pwrite, | |
176 | PACKET_vFile_close, | |
177 | PACKET_vFile_unlink, | |
178 | PACKET_vFile_readlink, | |
179 | PACKET_vFile_fstat, | |
180 | PACKET_qXfer_auxv, | |
181 | PACKET_qXfer_features, | |
182 | PACKET_qXfer_exec_file, | |
183 | PACKET_qXfer_libraries, | |
184 | PACKET_qXfer_libraries_svr4, | |
185 | PACKET_qXfer_memory_map, | |
186 | PACKET_qXfer_osdata, | |
187 | PACKET_qXfer_threads, | |
188 | PACKET_qXfer_statictrace_read, | |
189 | PACKET_qXfer_traceframe_info, | |
190 | PACKET_qXfer_uib, | |
191 | PACKET_qGetTIBAddr, | |
192 | PACKET_qGetTLSAddr, | |
193 | PACKET_qSupported, | |
194 | PACKET_qTStatus, | |
195 | PACKET_QPassSignals, | |
196 | PACKET_QCatchSyscalls, | |
197 | PACKET_QProgramSignals, | |
198 | PACKET_QSetWorkingDir, | |
199 | PACKET_QStartupWithShell, | |
200 | PACKET_QEnvironmentHexEncoded, | |
201 | PACKET_QEnvironmentReset, | |
202 | PACKET_QEnvironmentUnset, | |
203 | PACKET_qCRC, | |
204 | PACKET_qSearch_memory, | |
205 | PACKET_vAttach, | |
206 | PACKET_vRun, | |
207 | PACKET_QStartNoAckMode, | |
208 | PACKET_vKill, | |
209 | PACKET_qXfer_siginfo_read, | |
210 | PACKET_qXfer_siginfo_write, | |
211 | PACKET_qAttached, | |
212 | ||
213 | /* Support for conditional tracepoints. */ | |
214 | PACKET_ConditionalTracepoints, | |
215 | ||
216 | /* Support for target-side breakpoint conditions. */ | |
217 | PACKET_ConditionalBreakpoints, | |
218 | ||
219 | /* Support for target-side breakpoint commands. */ | |
220 | PACKET_BreakpointCommands, | |
221 | ||
222 | /* Support for fast tracepoints. */ | |
223 | PACKET_FastTracepoints, | |
224 | ||
225 | /* Support for static tracepoints. */ | |
226 | PACKET_StaticTracepoints, | |
227 | ||
228 | /* Support for installing tracepoints while a trace experiment is | |
229 | running. */ | |
230 | PACKET_InstallInTrace, | |
231 | ||
232 | PACKET_bc, | |
233 | PACKET_bs, | |
234 | PACKET_TracepointSource, | |
235 | PACKET_QAllow, | |
236 | PACKET_qXfer_fdpic, | |
237 | PACKET_QDisableRandomization, | |
238 | PACKET_QAgent, | |
239 | PACKET_QTBuffer_size, | |
240 | PACKET_Qbtrace_off, | |
241 | PACKET_Qbtrace_bts, | |
242 | PACKET_Qbtrace_pt, | |
243 | PACKET_qXfer_btrace, | |
244 | ||
245 | /* Support for the QNonStop packet. */ | |
246 | PACKET_QNonStop, | |
247 | ||
248 | /* Support for the QThreadEvents packet. */ | |
249 | PACKET_QThreadEvents, | |
250 | ||
251 | /* Support for multi-process extensions. */ | |
252 | PACKET_multiprocess_feature, | |
253 | ||
254 | /* Support for enabling and disabling tracepoints while a trace | |
255 | experiment is running. */ | |
256 | PACKET_EnableDisableTracepoints_feature, | |
257 | ||
258 | /* Support for collecting strings using the tracenz bytecode. */ | |
259 | PACKET_tracenz_feature, | |
260 | ||
261 | /* Support for continuing to run a trace experiment while GDB is | |
262 | disconnected. */ | |
263 | PACKET_DisconnectedTracing_feature, | |
264 | ||
265 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
266 | PACKET_augmented_libraries_svr4_read_feature, | |
267 | ||
268 | /* Support for the qXfer:btrace-conf:read packet. */ | |
269 | PACKET_qXfer_btrace_conf, | |
270 | ||
271 | /* Support for the Qbtrace-conf:bts:size packet. */ | |
272 | PACKET_Qbtrace_conf_bts_size, | |
273 | ||
274 | /* Support for swbreak+ feature. */ | |
275 | PACKET_swbreak_feature, | |
276 | ||
277 | /* Support for hwbreak+ feature. */ | |
278 | PACKET_hwbreak_feature, | |
279 | ||
280 | /* Support for fork events. */ | |
281 | PACKET_fork_event_feature, | |
282 | ||
283 | /* Support for vfork events. */ | |
284 | PACKET_vfork_event_feature, | |
285 | ||
286 | /* Support for the Qbtrace-conf:pt:size packet. */ | |
287 | PACKET_Qbtrace_conf_pt_size, | |
288 | ||
289 | /* Support for exec events. */ | |
290 | PACKET_exec_event_feature, | |
291 | ||
292 | /* Support for query supported vCont actions. */ | |
293 | PACKET_vContSupported, | |
294 | ||
295 | /* Support remote CTRL-C. */ | |
296 | PACKET_vCtrlC, | |
297 | ||
298 | /* Support TARGET_WAITKIND_NO_RESUMED. */ | |
299 | PACKET_no_resumed, | |
300 | ||
301 | /* Support for memory tagging, allocation tag fetch/store | |
302 | packets and the tag violation stop replies. */ | |
303 | PACKET_memory_tagging_feature, | |
304 | ||
305 | PACKET_MAX | |
306 | }; | |
307 | ||
6b8edb51 | 308 | struct threads_listing_context; |
3c69da40 PA |
309 | |
310 | /* Stub vCont actions support. | |
311 | ||
312 | Each field is a boolean flag indicating whether the stub reports | |
313 | support for the corresponding action. */ | |
314 | ||
315 | struct vCont_action_support | |
316 | { | |
317 | /* vCont;t */ | |
318 | bool t = false; | |
319 | ||
320 | /* vCont;r */ | |
321 | bool r = false; | |
322 | ||
323 | /* vCont;s */ | |
324 | bool s = false; | |
325 | ||
326 | /* vCont;S */ | |
327 | bool S = false; | |
328 | }; | |
329 | ||
405feb71 | 330 | /* About this many threadids fit in a packet. */ |
3c69da40 PA |
331 | |
332 | #define MAXTHREADLISTRESULTS 32 | |
333 | ||
334 | /* Data for the vFile:pread readahead cache. */ | |
335 | ||
336 | struct readahead_cache | |
337 | { | |
338 | /* Invalidate the readahead cache. */ | |
339 | void invalidate (); | |
340 | ||
341 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
342 | void invalidate_fd (int fd); | |
343 | ||
344 | /* Serve pread from the readahead cache. Returns number of bytes | |
345 | read, or 0 if the request can't be served from the cache. */ | |
346 | int pread (int fd, gdb_byte *read_buf, size_t len, ULONGEST offset); | |
347 | ||
348 | /* The file descriptor for the file that is being cached. -1 if the | |
349 | cache is invalid. */ | |
350 | int fd = -1; | |
351 | ||
352 | /* The offset into the file that the cache buffer corresponds | |
353 | to. */ | |
354 | ULONGEST offset = 0; | |
355 | ||
356 | /* The buffer holding the cache contents. */ | |
6b19f38a | 357 | gdb::byte_vector buf; |
3c69da40 PA |
358 | |
359 | /* Cache hit and miss counters. */ | |
360 | ULONGEST hit_count = 0; | |
361 | ULONGEST miss_count = 0; | |
362 | }; | |
363 | ||
364 | /* Description of the remote protocol for a given architecture. */ | |
365 | ||
366 | struct packet_reg | |
367 | { | |
368 | long offset; /* Offset into G packet. */ | |
369 | long regnum; /* GDB's internal register number. */ | |
370 | LONGEST pnum; /* Remote protocol register number. */ | |
371 | int in_g_packet; /* Always part of G packet. */ | |
99d9c3b9 | 372 | /* long size in bytes; == register_size (arch, regnum); |
3c69da40 | 373 | at present. */ |
99d9c3b9 | 374 | /* char *name; == gdbarch_register_name (arch, regnum); |
3c69da40 PA |
375 | at present. */ |
376 | }; | |
377 | ||
378 | struct remote_arch_state | |
379 | { | |
380 | explicit remote_arch_state (struct gdbarch *gdbarch); | |
381 | ||
382 | /* Description of the remote protocol registers. */ | |
383 | long sizeof_g_packet; | |
384 | ||
385 | /* Description of the remote protocol registers indexed by REGNUM | |
386 | (making an array gdbarch_num_regs in size). */ | |
387 | std::unique_ptr<packet_reg[]> regs; | |
388 | ||
389 | /* This is the size (in chars) of the first response to the ``g'' | |
390 | packet. It is used as a heuristic when determining the maximum | |
391 | size of memory-read and memory-write packets. A target will | |
392 | typically only reserve a buffer large enough to hold the ``g'' | |
393 | packet. The size does not include packet overhead (headers and | |
394 | trailers). */ | |
395 | long actual_register_packet_size; | |
396 | ||
397 | /* This is the maximum size (in chars) of a non read/write packet. | |
398 | It is also used as a cap on the size of read/write packets. */ | |
399 | long remote_packet_size; | |
400 | }; | |
401 | ||
402 | /* Description of the remote protocol state for the currently | |
403 | connected target. This is per-target state, and independent of the | |
404 | selected architecture. */ | |
405 | ||
406 | class remote_state | |
407 | { | |
408 | public: | |
409 | ||
410 | remote_state (); | |
411 | ~remote_state (); | |
412 | ||
413 | /* Get the remote arch state for GDBARCH. */ | |
414 | struct remote_arch_state *get_remote_arch_state (struct gdbarch *gdbarch); | |
415 | ||
92b98b37 SM |
416 | void create_async_event_handler () |
417 | { | |
418 | gdb_assert (m_async_event_handler_token == nullptr); | |
419 | m_async_event_handler_token | |
420 | = ::create_async_event_handler ([] (gdb_client_data data) | |
421 | { | |
422 | inferior_event_handler (INF_REG_EVENT); | |
423 | }, | |
424 | nullptr, "remote"); | |
425 | } | |
426 | ||
427 | void mark_async_event_handler () | |
635b2dd9 SM |
428 | { |
429 | gdb_assert (this->is_async_p ()); | |
430 | ::mark_async_event_handler (m_async_event_handler_token); | |
431 | } | |
92b98b37 SM |
432 | |
433 | void clear_async_event_handler () | |
434 | { ::clear_async_event_handler (m_async_event_handler_token); } | |
435 | ||
436 | bool async_event_handler_marked () const | |
437 | { return ::async_event_handler_marked (m_async_event_handler_token); } | |
438 | ||
439 | void delete_async_event_handler () | |
440 | { | |
441 | if (m_async_event_handler_token != nullptr) | |
442 | ::delete_async_event_handler (&m_async_event_handler_token); | |
443 | } | |
444 | ||
e84ffe7b SM |
445 | bool is_async_p () const |
446 | { | |
447 | /* We're async whenever the serial device is. */ | |
448 | gdb_assert (this->remote_desc != nullptr); | |
449 | return serial_is_async_p (this->remote_desc); | |
450 | } | |
451 | ||
452 | bool can_async_p () const | |
453 | { | |
454 | /* We can async whenever the serial device can. */ | |
455 | gdb_assert (this->remote_desc != nullptr); | |
456 | return serial_can_async_p (this->remote_desc); | |
457 | } | |
458 | ||
3c69da40 PA |
459 | public: /* data */ |
460 | ||
461 | /* A buffer to use for incoming packets, and its current size. The | |
462 | buffer is grown dynamically for larger incoming packets. | |
463 | Outgoing packets may also be constructed in this buffer. | |
8d64371b | 464 | The size of the buffer is always at least REMOTE_PACKET_SIZE; |
3c69da40 PA |
465 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing |
466 | packets. */ | |
8d64371b | 467 | gdb::char_vector buf; |
3c69da40 PA |
468 | |
469 | /* True if we're going through initial connection setup (finding out | |
470 | about the remote side's threads, relocating symbols, etc.). */ | |
471 | bool starting_up = false; | |
472 | ||
473 | /* If we negotiated packet size explicitly (and thus can bypass | |
474 | heuristics for the largest packet size that will not overflow | |
475 | a buffer in the stub), this will be set to that packet size. | |
476 | Otherwise zero, meaning to use the guessed size. */ | |
477 | long explicit_packet_size = 0; | |
478 | ||
3c69da40 PA |
479 | /* True, if in no ack mode. That is, neither GDB nor the stub will |
480 | expect acks from each other. The connection is assumed to be | |
481 | reliable. */ | |
482 | bool noack_mode = false; | |
483 | ||
484 | /* True if we're connected in extended remote mode. */ | |
485 | bool extended = false; | |
486 | ||
487 | /* True if we resumed the target and we're waiting for the target to | |
488 | stop. In the mean time, we can't start another command/query. | |
489 | The remote server wouldn't be ready to process it, so we'd | |
490 | timeout waiting for a reply that would never come and eventually | |
491 | we'd close the connection. This can happen in asynchronous mode | |
492 | because we allow GDB commands while the target is running. */ | |
493 | bool waiting_for_stop_reply = false; | |
494 | ||
495 | /* The status of the stub support for the various vCont actions. */ | |
496 | vCont_action_support supports_vCont; | |
497 | ||
498 | /* True if the user has pressed Ctrl-C, but the target hasn't | |
499 | responded to that. */ | |
500 | bool ctrlc_pending_p = false; | |
501 | ||
502 | /* True if we saw a Ctrl-C while reading or writing from/to the | |
503 | remote descriptor. At that point it is not safe to send a remote | |
504 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
505 | process it once we're done with sending/receiving the current | |
506 | packet, which should be shortly. If however that takes too long, | |
507 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
508 | bool got_ctrlc_during_io = false; | |
509 | ||
510 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
511 | remote_open knows that we don't have a file open when the program | |
512 | starts. */ | |
513 | struct serial *remote_desc = nullptr; | |
514 | ||
515 | /* These are the threads which we last sent to the remote system. The | |
516 | TID member will be -1 for all or -2 for not sent yet. */ | |
517 | ptid_t general_thread = null_ptid; | |
518 | ptid_t continue_thread = null_ptid; | |
519 | ||
520 | /* This is the traceframe which we last selected on the remote system. | |
521 | It will be -1 if no traceframe is selected. */ | |
522 | int remote_traceframe_number = -1; | |
523 | ||
524 | char *last_pass_packet = nullptr; | |
525 | ||
526 | /* The last QProgramSignals packet sent to the target. We bypass | |
527 | sending a new program signals list down to the target if the new | |
528 | packet is exactly the same as the last we sent. IOW, we only let | |
529 | the target know about program signals list changes. */ | |
530 | char *last_program_signals_packet = nullptr; | |
531 | ||
532 | gdb_signal last_sent_signal = GDB_SIGNAL_0; | |
533 | ||
534 | bool last_sent_step = false; | |
535 | ||
536 | /* The execution direction of the last resume we got. */ | |
537 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; | |
538 | ||
539 | char *finished_object = nullptr; | |
540 | char *finished_annex = nullptr; | |
541 | ULONGEST finished_offset = 0; | |
542 | ||
543 | /* Should we try the 'ThreadInfo' query packet? | |
544 | ||
545 | This variable (NOT available to the user: auto-detect only!) | |
546 | determines whether GDB will use the new, simpler "ThreadInfo" | |
547 | query or the older, more complex syntax for thread queries. | |
548 | This is an auto-detect variable (set to true at each connect, | |
549 | and set to false when the target fails to recognize it). */ | |
550 | bool use_threadinfo_query = false; | |
551 | bool use_threadextra_query = false; | |
552 | ||
553 | threadref echo_nextthread {}; | |
554 | threadref nextthread {}; | |
555 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
556 | ||
557 | /* The state of remote notification. */ | |
558 | struct remote_notif_state *notif_state = nullptr; | |
559 | ||
560 | /* The branch trace configuration. */ | |
561 | struct btrace_config btrace_config {}; | |
562 | ||
563 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
564 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
565 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
566 | has yet been sent. */ | |
567 | int fs_pid = -1; | |
568 | ||
569 | /* A readahead cache for vFile:pread. Often, reading a binary | |
570 | involves a sequence of small reads. E.g., when parsing an ELF | |
571 | file. A readahead cache helps mostly the case of remote | |
572 | debugging on a connection with higher latency, due to the | |
573 | request/reply nature of the RSP. We only cache data for a single | |
574 | file descriptor at a time. */ | |
575 | struct readahead_cache readahead_cache; | |
576 | ||
577 | /* The list of already fetched and acknowledged stop events. This | |
578 | queue is used for notification Stop, and other notifications | |
579 | don't need queue for their events, because the notification | |
580 | events of Stop can't be consumed immediately, so that events | |
581 | should be queued first, and be consumed by remote_wait_{ns,as} | |
582 | one per time. Other notifications can consume their events | |
583 | immediately, so queue is not needed for them. */ | |
953edf2b | 584 | std::vector<stop_reply_up> stop_reply_queue; |
3c69da40 | 585 | |
3c69da40 PA |
586 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with |
587 | ``forever'' still use the normal timeout mechanism. This is | |
588 | currently used by the ASYNC code to guarentee that target reads | |
589 | during the initial connect always time-out. Once getpkt has been | |
590 | modified to return a timeout indication and, in turn | |
591 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
592 | this can go away. */ | |
8756b726 | 593 | bool wait_forever_enabled_p = true; |
3c69da40 PA |
594 | |
595 | private: | |
92b98b37 SM |
596 | /* Asynchronous signal handle registered as event loop source for |
597 | when we have pending events ready to be passed to the core. */ | |
598 | async_event_handler *m_async_event_handler_token = nullptr; | |
599 | ||
3c69da40 PA |
600 | /* Mapping of remote protocol data for each gdbarch. Usually there |
601 | is only one entry here, though we may see more with stubs that | |
602 | support multi-process. */ | |
603 | std::unordered_map<struct gdbarch *, remote_arch_state> | |
604 | m_arch_states; | |
605 | }; | |
6b8edb51 | 606 | |
d9f719f1 PA |
607 | static const target_info remote_target_info = { |
608 | "remote", | |
ae9adb36 | 609 | N_("Remote target using gdb-specific protocol"), |
d9f719f1 PA |
610 | remote_doc |
611 | }; | |
612 | ||
ff52c073 CS |
613 | /* Description of a remote packet. */ |
614 | ||
615 | struct packet_description | |
616 | { | |
617 | /* Name of the packet used for gdb output. */ | |
618 | const char *name; | |
619 | ||
620 | /* Title of the packet, used by the set/show remote name-packet | |
621 | commands to identify the individual packages and gdb output. */ | |
622 | const char *title; | |
623 | }; | |
624 | ||
625 | /* Configuration of a remote packet. */ | |
626 | ||
627 | struct packet_config | |
628 | { | |
629 | /* If auto, GDB auto-detects support for this packet or feature, | |
630 | either through qSupported, or by trying the packet and looking | |
631 | at the response. If true, GDB assumes the target supports this | |
632 | packet. If false, the packet is disabled. Configs that don't | |
633 | have an associated command always have this set to auto. */ | |
634 | enum auto_boolean detect; | |
635 | ||
636 | /* Does the target support this packet? */ | |
637 | enum packet_support support; | |
638 | }; | |
639 | ||
fe4c3ca0 CS |
640 | /* User configurable variables for the number of characters in a |
641 | memory read/write packet. MIN (rsa->remote_packet_size, | |
642 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
643 | values (fifo overruns, et.al.) and some users need larger values | |
644 | (speed up transfers). The variables ``preferred_*'' (the user | |
645 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
646 | (Positive - a soft limit, negative - a hard limit). */ | |
647 | ||
648 | struct memory_packet_config | |
649 | { | |
650 | const char *name; | |
651 | long size; | |
652 | int fixed_p; | |
653 | }; | |
654 | ||
655 | /* These global variables contain the default configuration for every new | |
656 | remote_feature object. */ | |
657 | static memory_packet_config memory_read_packet_config = | |
658 | { | |
659 | "memory-read-packet-size", | |
660 | }; | |
661 | static memory_packet_config memory_write_packet_config = | |
662 | { | |
663 | "memory-write-packet-size", | |
664 | }; | |
665 | ||
ff52c073 CS |
666 | /* This global array contains packet descriptions (name and title). */ |
667 | static packet_description packets_descriptions[PACKET_MAX]; | |
668 | /* This global array contains the default configuration for every new | |
669 | per-remote target array. */ | |
670 | static packet_config remote_protocol_packets[PACKET_MAX]; | |
671 | ||
672 | /* Description of a remote target's features. It stores the configuration | |
673 | and provides functions to determine supported features of the target. */ | |
674 | ||
675 | struct remote_features | |
676 | { | |
677 | remote_features () | |
678 | { | |
fe4c3ca0 CS |
679 | m_memory_read_packet_config = memory_read_packet_config; |
680 | m_memory_write_packet_config = memory_write_packet_config; | |
681 | ||
ff52c073 CS |
682 | std::copy (std::begin (remote_protocol_packets), |
683 | std::end (remote_protocol_packets), | |
684 | std::begin (m_protocol_packets)); | |
685 | } | |
686 | ~remote_features () = default; | |
687 | ||
688 | DISABLE_COPY_AND_ASSIGN (remote_features); | |
689 | ||
690 | /* Returns whether a given packet defined by its enum value is supported. */ | |
691 | enum packet_support packet_support (int) const; | |
692 | ||
693 | /* Returns the packet's corresponding "set remote foo-packet" command | |
694 | state. See struct packet_config for more details. */ | |
695 | enum auto_boolean packet_set_cmd_state (int packet) const | |
696 | { return m_protocol_packets[packet].detect; } | |
697 | ||
698 | /* Returns true if the multi-process extensions are in effect. */ | |
699 | int remote_multi_process_p () const | |
700 | { return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; } | |
701 | ||
702 | /* Returns true if fork events are supported. */ | |
703 | int remote_fork_event_p () const | |
704 | { return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; } | |
705 | ||
706 | /* Returns true if vfork events are supported. */ | |
707 | int remote_vfork_event_p () const | |
708 | { return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; } | |
709 | ||
710 | /* Returns true if exec events are supported. */ | |
711 | int remote_exec_event_p () const | |
712 | { return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; } | |
713 | ||
714 | /* Returns true if memory tagging is supported, false otherwise. */ | |
715 | bool remote_memory_tagging_p () const | |
716 | { return packet_support (PACKET_memory_tagging_feature) == PACKET_ENABLE; } | |
717 | ||
718 | /* Reset all packets back to "unknown support". Called when opening a | |
719 | new connection to a remote target. */ | |
720 | void reset_all_packet_configs_support (); | |
721 | ||
722 | /* Check result value in BUF for packet WHICH_PACKET and update the packet's | |
723 | support configuration accordingly. */ | |
724 | packet_result packet_ok (const char *buf, const int which_packet); | |
725 | packet_result packet_ok (const gdb::char_vector &buf, const int which_packet); | |
726 | ||
fe4c3ca0 CS |
727 | /* Configuration of a remote target's memory read packet. */ |
728 | memory_packet_config m_memory_read_packet_config; | |
729 | /* Configuration of a remote target's memory write packet. */ | |
730 | memory_packet_config m_memory_write_packet_config; | |
731 | ||
ff52c073 CS |
732 | /* The per-remote target array which stores a remote's packet |
733 | configurations. */ | |
734 | packet_config m_protocol_packets[PACKET_MAX]; | |
735 | }; | |
736 | ||
3b3dac9b | 737 | class remote_target : public process_stratum_target |
f6ac5f3d PA |
738 | { |
739 | public: | |
3b3dac9b | 740 | remote_target () = default; |
6b8edb51 | 741 | ~remote_target () override; |
f6ac5f3d | 742 | |
d9f719f1 PA |
743 | const target_info &info () const override |
744 | { return remote_target_info; } | |
f6ac5f3d | 745 | |
121b3efd PA |
746 | const char *connection_string () override; |
747 | ||
f6ac5f3d PA |
748 | thread_control_capabilities get_thread_control_capabilities () override |
749 | { return tc_schedlock; } | |
750 | ||
d9f719f1 PA |
751 | /* Open a remote connection. */ |
752 | static void open (const char *, int); | |
753 | ||
f6ac5f3d PA |
754 | void close () override; |
755 | ||
756 | void detach (inferior *, int) override; | |
757 | void disconnect (const char *, int) override; | |
758 | ||
1192f124 | 759 | void commit_resumed () override; |
f6ac5f3d | 760 | void resume (ptid_t, int, enum gdb_signal) override; |
b60cea74 | 761 | ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override; |
b4b1a226 | 762 | bool has_pending_events () override; |
f6ac5f3d PA |
763 | |
764 | void fetch_registers (struct regcache *, int) override; | |
765 | void store_registers (struct regcache *, int) override; | |
766 | void prepare_to_store (struct regcache *) override; | |
767 | ||
f6ac5f3d PA |
768 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; |
769 | ||
770 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
771 | enum remove_bp_reason) override; | |
772 | ||
773 | ||
57810aa7 PA |
774 | bool stopped_by_sw_breakpoint () override; |
775 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 776 | |
57810aa7 | 777 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 778 | |
57810aa7 | 779 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 780 | |
57810aa7 | 781 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 782 | |
57810aa7 | 783 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 784 | |
57810aa7 | 785 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
786 | |
787 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
788 | ||
789 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
790 | ||
791 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
792 | ||
793 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
794 | ||
795 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
796 | struct expression *) override; | |
797 | ||
798 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
799 | struct expression *) override; | |
800 | ||
801 | void kill () override; | |
802 | ||
803 | void load (const char *, int) override; | |
804 | ||
805 | void mourn_inferior () override; | |
806 | ||
adc6a863 | 807 | void pass_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d PA |
808 | |
809 | int set_syscall_catchpoint (int, bool, int, | |
810 | gdb::array_view<const int>) override; | |
811 | ||
adc6a863 | 812 | void program_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d | 813 | |
57810aa7 | 814 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
815 | |
816 | const char *thread_name (struct thread_info *) override; | |
817 | ||
818 | void update_thread_list () override; | |
819 | ||
a068643d | 820 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
821 | |
822 | const char *extra_thread_info (struct thread_info *) override; | |
823 | ||
c80e29db | 824 | ptid_t get_ada_task_ptid (long lwp, ULONGEST thread) override; |
f6ac5f3d PA |
825 | |
826 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
827 | int handle_len, | |
828 | inferior *inf) override; | |
829 | ||
1f08d324 TV |
830 | gdb::array_view<const gdb_byte> thread_info_to_thread_handle (struct thread_info *tp) |
831 | override; | |
3d6c6204 | 832 | |
f6ac5f3d PA |
833 | void stop (ptid_t) override; |
834 | ||
835 | void interrupt () override; | |
836 | ||
837 | void pass_ctrlc () override; | |
838 | ||
839 | enum target_xfer_status xfer_partial (enum target_object object, | |
840 | const char *annex, | |
841 | gdb_byte *readbuf, | |
842 | const gdb_byte *writebuf, | |
843 | ULONGEST offset, ULONGEST len, | |
844 | ULONGEST *xfered_len) override; | |
845 | ||
846 | ULONGEST get_memory_xfer_limit () override; | |
847 | ||
848 | void rcmd (const char *command, struct ui_file *output) override; | |
849 | ||
0e90c441 | 850 | const char *pid_to_exec_file (int pid) override; |
f6ac5f3d PA |
851 | |
852 | void log_command (const char *cmd) override | |
853 | { | |
854 | serial_log_command (this, cmd); | |
855 | } | |
856 | ||
857 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
858 | CORE_ADDR load_module_addr, | |
859 | CORE_ADDR offset) override; | |
860 | ||
57810aa7 | 861 | bool can_execute_reverse () override; |
f6ac5f3d PA |
862 | |
863 | std::vector<mem_region> memory_map () override; | |
864 | ||
865 | void flash_erase (ULONGEST address, LONGEST length) override; | |
866 | ||
867 | void flash_done () override; | |
868 | ||
869 | const struct target_desc *read_description () override; | |
870 | ||
871 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
872 | const gdb_byte *pattern, ULONGEST pattern_len, | |
873 | CORE_ADDR *found_addrp) override; | |
874 | ||
57810aa7 | 875 | bool can_async_p () override; |
f6ac5f3d | 876 | |
57810aa7 | 877 | bool is_async_p () override; |
f6ac5f3d | 878 | |
4a570176 | 879 | void async (bool) override; |
f6ac5f3d | 880 | |
5b6d1e4f PA |
881 | int async_wait_fd () override; |
882 | ||
f6ac5f3d PA |
883 | void thread_events (int) override; |
884 | ||
885 | int can_do_single_step () override; | |
886 | ||
887 | void terminal_inferior () override; | |
888 | ||
889 | void terminal_ours () override; | |
890 | ||
57810aa7 | 891 | bool supports_non_stop () override; |
f6ac5f3d | 892 | |
57810aa7 | 893 | bool supports_multi_process () override; |
f6ac5f3d | 894 | |
57810aa7 | 895 | bool supports_disable_randomization () override; |
f6ac5f3d | 896 | |
57810aa7 | 897 | bool filesystem_is_local () override; |
f6ac5f3d PA |
898 | |
899 | ||
900 | int fileio_open (struct inferior *inf, const char *filename, | |
901 | int flags, int mode, int warn_if_slow, | |
b872057a | 902 | fileio_error *target_errno) override; |
f6ac5f3d PA |
903 | |
904 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 905 | ULONGEST offset, fileio_error *target_errno) override; |
f6ac5f3d PA |
906 | |
907 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 908 | ULONGEST offset, fileio_error *target_errno) override; |
f6ac5f3d | 909 | |
b872057a | 910 | int fileio_fstat (int fd, struct stat *sb, fileio_error *target_errno) override; |
f6ac5f3d | 911 | |
b872057a | 912 | int fileio_close (int fd, fileio_error *target_errno) override; |
f6ac5f3d PA |
913 | |
914 | int fileio_unlink (struct inferior *inf, | |
915 | const char *filename, | |
b872057a | 916 | fileio_error *target_errno) override; |
f6ac5f3d PA |
917 | |
918 | gdb::optional<std::string> | |
919 | fileio_readlink (struct inferior *inf, | |
920 | const char *filename, | |
b872057a | 921 | fileio_error *target_errno) override; |
f6ac5f3d | 922 | |
57810aa7 | 923 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 924 | |
57810aa7 | 925 | bool supports_string_tracing () override; |
f6ac5f3d | 926 | |
ff52c073 CS |
927 | int remote_supports_cond_tracepoints (); |
928 | ||
57810aa7 | 929 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 930 | |
ff52c073 CS |
931 | int remote_supports_fast_tracepoints (); |
932 | ||
933 | int remote_supports_static_tracepoints (); | |
934 | ||
935 | int remote_supports_install_in_trace (); | |
936 | ||
57810aa7 | 937 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
938 | |
939 | void trace_init () override; | |
940 | ||
941 | void download_tracepoint (struct bp_location *location) override; | |
942 | ||
57810aa7 | 943 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
944 | |
945 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
946 | ||
947 | void enable_tracepoint (struct bp_location *location) override; | |
948 | ||
949 | void disable_tracepoint (struct bp_location *location) override; | |
950 | ||
951 | void trace_set_readonly_regions () override; | |
952 | ||
953 | void trace_start () override; | |
954 | ||
955 | int get_trace_status (struct trace_status *ts) override; | |
956 | ||
01bccc56 | 957 | void get_tracepoint_status (tracepoint *tp, struct uploaded_tp *utp) |
f6ac5f3d PA |
958 | override; |
959 | ||
960 | void trace_stop () override; | |
961 | ||
962 | int trace_find (enum trace_find_type type, int num, | |
963 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
964 | ||
57810aa7 | 965 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
966 | |
967 | int save_trace_data (const char *filename) override; | |
968 | ||
969 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
970 | ||
971 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
972 | ||
973 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
974 | ||
975 | int get_min_fast_tracepoint_insn_len () override; | |
976 | ||
977 | void set_disconnected_tracing (int val) override; | |
978 | ||
979 | void set_circular_trace_buffer (int val) override; | |
980 | ||
981 | void set_trace_buffer_size (LONGEST val) override; | |
982 | ||
57810aa7 PA |
983 | bool set_trace_notes (const char *user, const char *notes, |
984 | const char *stopnotes) override; | |
f6ac5f3d PA |
985 | |
986 | int core_of_thread (ptid_t ptid) override; | |
987 | ||
988 | int verify_memory (const gdb_byte *data, | |
989 | CORE_ADDR memaddr, ULONGEST size) override; | |
990 | ||
991 | ||
57810aa7 | 992 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
993 | |
994 | void set_permissions () override; | |
995 | ||
996 | bool static_tracepoint_marker_at (CORE_ADDR, | |
997 | struct static_tracepoint_marker *marker) | |
998 | override; | |
999 | ||
1000 | std::vector<static_tracepoint_marker> | |
1001 | static_tracepoint_markers_by_strid (const char *id) override; | |
1002 | ||
1003 | traceframe_info_up traceframe_info () override; | |
1004 | ||
57810aa7 PA |
1005 | bool use_agent (bool use) override; |
1006 | bool can_use_agent () override; | |
f6ac5f3d | 1007 | |
696c0d5e MM |
1008 | struct btrace_target_info * |
1009 | enable_btrace (thread_info *tp, const struct btrace_config *conf) override; | |
f6ac5f3d PA |
1010 | |
1011 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
1012 | ||
1013 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
1014 | ||
1015 | enum btrace_error read_btrace (struct btrace_data *data, | |
1016 | struct btrace_target_info *btinfo, | |
1017 | enum btrace_read_type type) override; | |
1018 | ||
1019 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 1020 | bool augmented_libraries_svr4_read () override; |
82d1f134 | 1021 | void follow_fork (inferior *, ptid_t, target_waitkind, bool, bool) override; |
294c36eb | 1022 | void follow_exec (inferior *, ptid_t, const char *) override; |
f6ac5f3d PA |
1023 | int insert_fork_catchpoint (int) override; |
1024 | int remove_fork_catchpoint (int) override; | |
1025 | int insert_vfork_catchpoint (int) override; | |
1026 | int remove_vfork_catchpoint (int) override; | |
1027 | int insert_exec_catchpoint (int) override; | |
1028 | int remove_exec_catchpoint (int) override; | |
1029 | enum exec_direction_kind execution_direction () override; | |
1030 | ||
dbe692af LM |
1031 | bool supports_memory_tagging () override; |
1032 | ||
1033 | bool fetch_memtags (CORE_ADDR address, size_t len, | |
1034 | gdb::byte_vector &tags, int type) override; | |
1035 | ||
1036 | bool store_memtags (CORE_ADDR address, size_t len, | |
1037 | const gdb::byte_vector &tags, int type) override; | |
1038 | ||
6b8edb51 PA |
1039 | public: /* Remote specific methods. */ |
1040 | ||
1041 | void remote_download_command_source (int num, ULONGEST addr, | |
1042 | struct command_line *cmds); | |
1043 | ||
1044 | void remote_file_put (const char *local_file, const char *remote_file, | |
1045 | int from_tty); | |
1046 | void remote_file_get (const char *remote_file, const char *local_file, | |
1047 | int from_tty); | |
1048 | void remote_file_delete (const char *remote_file, int from_tty); | |
1049 | ||
1050 | int remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 1051 | ULONGEST offset, fileio_error *remote_errno); |
6b8edb51 | 1052 | int remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, |
b872057a | 1053 | ULONGEST offset, fileio_error *remote_errno); |
6b8edb51 | 1054 | int remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, |
b872057a | 1055 | ULONGEST offset, fileio_error *remote_errno); |
6b8edb51 PA |
1056 | |
1057 | int remote_hostio_send_command (int command_bytes, int which_packet, | |
b872057a | 1058 | fileio_error *remote_errno, const char **attachment, |
6b8edb51 PA |
1059 | int *attachment_len); |
1060 | int remote_hostio_set_filesystem (struct inferior *inf, | |
b872057a | 1061 | fileio_error *remote_errno); |
6b8edb51 PA |
1062 | /* We should get rid of this and use fileio_open directly. */ |
1063 | int remote_hostio_open (struct inferior *inf, const char *filename, | |
1064 | int flags, int mode, int warn_if_slow, | |
b872057a SM |
1065 | fileio_error *remote_errno); |
1066 | int remote_hostio_close (int fd, fileio_error *remote_errno); | |
6b8edb51 PA |
1067 | |
1068 | int remote_hostio_unlink (inferior *inf, const char *filename, | |
b872057a | 1069 | fileio_error *remote_errno); |
6b8edb51 PA |
1070 | |
1071 | struct remote_state *get_remote_state (); | |
1072 | ||
1073 | long get_remote_packet_size (void); | |
1074 | long get_memory_packet_size (struct memory_packet_config *config); | |
1075 | ||
1076 | long get_memory_write_packet_size (); | |
1077 | long get_memory_read_packet_size (); | |
1078 | ||
1079 | char *append_pending_thread_resumptions (char *p, char *endp, | |
1080 | ptid_t ptid); | |
d9f719f1 | 1081 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d | 1082 | void start_remote (int from_tty, int extended_p); |
00431a78 | 1083 | void remote_detach_1 (struct inferior *inf, int from_tty); |
6b8edb51 PA |
1084 | |
1085 | char *append_resumption (char *p, char *endp, | |
1086 | ptid_t ptid, int step, gdb_signal siggnal); | |
d51926f0 | 1087 | int remote_resume_with_vcont (ptid_t scope_ptid, int step, |
6b8edb51 PA |
1088 | gdb_signal siggnal); |
1089 | ||
64d38fdd | 1090 | thread_info *add_current_inferior_and_thread (const char *wait_status); |
6b8edb51 PA |
1091 | |
1092 | ptid_t wait_ns (ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 1093 | target_wait_flags options); |
6b8edb51 | 1094 | ptid_t wait_as (ptid_t ptid, target_waitstatus *status, |
b60cea74 | 1095 | target_wait_flags options); |
6b8edb51 PA |
1096 | |
1097 | ptid_t process_stop_reply (struct stop_reply *stop_reply, | |
1098 | target_waitstatus *status); | |
1099 | ||
8f66807b | 1100 | ptid_t select_thread_for_ambiguous_stop_reply |
c272a98c | 1101 | (const struct target_waitstatus &status); |
8f66807b | 1102 | |
8a82de58 | 1103 | void remote_notice_new_inferior (ptid_t currthread, bool executing); |
6b8edb51 | 1104 | |
1edb66d8 | 1105 | void print_one_stopped_thread (thread_info *thread); |
6b8edb51 PA |
1106 | void process_initial_stop_replies (int from_tty); |
1107 | ||
b622494e AB |
1108 | thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing, |
1109 | bool silent_p); | |
6b8edb51 PA |
1110 | |
1111 | void btrace_sync_conf (const btrace_config *conf); | |
1112 | ||
1113 | void remote_btrace_maybe_reopen (); | |
1114 | ||
1115 | void remove_new_fork_children (threads_listing_context *context); | |
28561a65 | 1116 | void kill_new_fork_children (inferior *inf); |
6b8edb51 PA |
1117 | void discard_pending_stop_replies (struct inferior *inf); |
1118 | int stop_reply_queue_length (); | |
1119 | ||
1120 | void check_pending_events_prevent_wildcard_vcont | |
2f63ec5c | 1121 | (bool *may_global_wildcard_vcont); |
6b8edb51 PA |
1122 | |
1123 | void discard_pending_stop_replies_in_queue (); | |
1124 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
1125 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
1126 | int peek_stop_reply (ptid_t ptid); | |
bb277751 | 1127 | void remote_parse_stop_reply (const char *buf, stop_reply *event); |
6b8edb51 PA |
1128 | |
1129 | void remote_stop_ns (ptid_t ptid); | |
1130 | void remote_interrupt_as (); | |
1131 | void remote_interrupt_ns (); | |
1132 | ||
1133 | char *remote_get_noisy_reply (); | |
1134 | int remote_query_attached (int pid); | |
9ab8741a | 1135 | inferior *remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 PA |
1136 | int try_open_exec); |
1137 | ||
1138 | ptid_t remote_current_thread (ptid_t oldpid); | |
e3b2741b | 1139 | ptid_t get_current_thread (const char *wait_status); |
6b8edb51 PA |
1140 | |
1141 | void set_thread (ptid_t ptid, int gen); | |
1142 | void set_general_thread (ptid_t ptid); | |
1143 | void set_continue_thread (ptid_t ptid); | |
1144 | void set_general_process (); | |
1145 | ||
1146 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
1147 | ||
cecb1912 | 1148 | int remote_unpack_thread_info_response (const char *pkt, threadref *expectedref, |
6b8edb51 PA |
1149 | gdb_ext_thread_info *info); |
1150 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
1151 | gdb_ext_thread_info *info); | |
1152 | ||
cecb1912 | 1153 | int parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
1154 | threadref *original_echo, |
1155 | threadref *resultlist, | |
1156 | int *doneflag); | |
1157 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
1158 | int result_limit, int *done, int *result_count, | |
1159 | threadref *threadlist); | |
1160 | ||
1161 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
1162 | void *context, int looplimit); | |
1163 | ||
1164 | int remote_get_threads_with_ql (threads_listing_context *context); | |
1165 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
1166 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
1167 | ||
1168 | void extended_remote_restart (); | |
1169 | ||
1170 | void get_offsets (); | |
1171 | ||
1172 | void remote_check_symbols (); | |
1173 | ||
1174 | void remote_supported_packet (const struct protocol_feature *feature, | |
1175 | enum packet_support support, | |
1176 | const char *argument); | |
1177 | ||
1178 | void remote_query_supported (); | |
1179 | ||
1180 | void remote_packet_size (const protocol_feature *feature, | |
1181 | packet_support support, const char *value); | |
1182 | ||
1183 | void remote_serial_quit_handler (); | |
1184 | ||
1185 | void remote_detach_pid (int pid); | |
1186 | ||
1187 | void remote_vcont_probe (); | |
1188 | ||
1189 | void remote_resume_with_hc (ptid_t ptid, int step, | |
1190 | gdb_signal siggnal); | |
1191 | ||
1192 | void send_interrupt_sequence (); | |
1193 | void interrupt_query (); | |
1194 | ||
42938c1a | 1195 | void remote_notif_get_pending_events (const notif_client *nc); |
6b8edb51 PA |
1196 | |
1197 | int fetch_register_using_p (struct regcache *regcache, | |
1198 | packet_reg *reg); | |
1199 | int send_g_packet (); | |
1200 | void process_g_packet (struct regcache *regcache); | |
1201 | void fetch_registers_using_g (struct regcache *regcache); | |
1202 | int store_register_using_P (const struct regcache *regcache, | |
1203 | packet_reg *reg); | |
1204 | void store_registers_using_G (const struct regcache *regcache); | |
1205 | ||
1206 | void set_remote_traceframe (); | |
1207 | ||
1208 | void check_binary_download (CORE_ADDR addr); | |
1209 | ||
1210 | target_xfer_status remote_write_bytes_aux (const char *header, | |
1211 | CORE_ADDR memaddr, | |
1212 | const gdb_byte *myaddr, | |
1213 | ULONGEST len_units, | |
1214 | int unit_size, | |
1215 | ULONGEST *xfered_len_units, | |
1216 | char packet_format, | |
1217 | int use_length); | |
1218 | ||
1219 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
1220 | const gdb_byte *myaddr, ULONGEST len, | |
1221 | int unit_size, ULONGEST *xfered_len); | |
1222 | ||
1223 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
1224 | ULONGEST len_units, | |
1225 | int unit_size, ULONGEST *xfered_len_units); | |
1226 | ||
1227 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
1228 | ULONGEST memaddr, | |
1229 | ULONGEST len, | |
1230 | int unit_size, | |
1231 | ULONGEST *xfered_len); | |
1232 | ||
1233 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
1234 | gdb_byte *myaddr, ULONGEST len, | |
1235 | int unit_size, | |
1236 | ULONGEST *xfered_len); | |
1237 | ||
1238 | packet_result remote_send_printf (const char *format, ...) | |
1239 | ATTRIBUTE_PRINTF (2, 3); | |
1240 | ||
1241 | target_xfer_status remote_flash_write (ULONGEST address, | |
1242 | ULONGEST length, ULONGEST *xfered_len, | |
1243 | const gdb_byte *data); | |
1244 | ||
1245 | int readchar (int timeout); | |
1246 | ||
1247 | void remote_serial_write (const char *str, int len); | |
1248 | ||
1249 | int putpkt (const char *buf); | |
1250 | int putpkt_binary (const char *buf, int cnt); | |
1251 | ||
8d64371b TT |
1252 | int putpkt (const gdb::char_vector &buf) |
1253 | { | |
1254 | return putpkt (buf.data ()); | |
1255 | } | |
1256 | ||
6b8edb51 | 1257 | void skip_frame (); |
8d64371b | 1258 | long read_frame (gdb::char_vector *buf_p); |
aa7b36b8 TT |
1259 | int getpkt (gdb::char_vector *buf, bool forever = false, |
1260 | bool *is_notif = nullptr); | |
6b8edb51 PA |
1261 | int remote_vkill (int pid); |
1262 | void remote_kill_k (); | |
1263 | ||
1264 | void extended_remote_disable_randomization (int val); | |
1265 | int extended_remote_run (const std::string &args); | |
1266 | ||
1267 | void send_environment_packet (const char *action, | |
1268 | const char *packet, | |
1269 | const char *value); | |
1270 | ||
1271 | void extended_remote_environment_support (); | |
3c69da40 | 1272 | void extended_remote_set_inferior_cwd (); |
80152258 | 1273 | |
3c69da40 PA |
1274 | target_xfer_status remote_write_qxfer (const char *object_name, |
1275 | const char *annex, | |
1276 | const gdb_byte *writebuf, | |
1277 | ULONGEST offset, LONGEST len, | |
1278 | ULONGEST *xfered_len, | |
ff52c073 | 1279 | const unsigned int which_packet); |
43c3a0e4 | 1280 | |
3c69da40 PA |
1281 | target_xfer_status remote_read_qxfer (const char *object_name, |
1282 | const char *annex, | |
1283 | gdb_byte *readbuf, ULONGEST offset, | |
1284 | LONGEST len, | |
1285 | ULONGEST *xfered_len, | |
ff52c073 | 1286 | const unsigned int which_packet); |
43c3a0e4 | 1287 | |
3c69da40 | 1288 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 1289 | |
3c69da40 | 1290 | bool vcont_r_supported (); |
43c3a0e4 | 1291 | |
ff52c073 CS |
1292 | remote_features m_features; |
1293 | ||
288712bb AB |
1294 | private: |
1295 | ||
1296 | bool start_remote_1 (int from_tty, int extended_p); | |
43c3a0e4 | 1297 | |
3c69da40 PA |
1298 | /* The remote state. Don't reference this directly. Use the |
1299 | get_remote_state method instead. */ | |
1300 | remote_state m_remote_state; | |
43c3a0e4 PA |
1301 | }; |
1302 | ||
3c69da40 PA |
1303 | static const target_info extended_remote_target_info = { |
1304 | "extended-remote", | |
ae9adb36 | 1305 | N_("Extended remote target using gdb-specific protocol"), |
3c69da40 PA |
1306 | remote_doc |
1307 | }; | |
ea9c271d | 1308 | |
3c69da40 PA |
1309 | /* Set up the extended remote target by extending the standard remote |
1310 | target and adding to it. */ | |
1311 | ||
1312 | class extended_remote_target final : public remote_target | |
ea9c271d | 1313 | { |
9d6eea31 | 1314 | public: |
3c69da40 PA |
1315 | const target_info &info () const override |
1316 | { return extended_remote_target_info; } | |
9d6eea31 | 1317 | |
3c69da40 PA |
1318 | /* Open an extended-remote connection. */ |
1319 | static void open (const char *, int); | |
de44f5a7 | 1320 | |
3c69da40 PA |
1321 | bool can_create_inferior () override { return true; } |
1322 | void create_inferior (const char *, const std::string &, | |
1323 | char **, int) override; | |
9d6eea31 | 1324 | |
3c69da40 | 1325 | void detach (inferior *, int) override; |
9d6eea31 | 1326 | |
3c69da40 PA |
1327 | bool can_attach () override { return true; } |
1328 | void attach (const char *, int) override; | |
be2a5f71 | 1329 | |
3c69da40 PA |
1330 | void post_attach (int) override; |
1331 | bool supports_disable_randomization () override; | |
1332 | }; | |
1e51243a | 1333 | |
a4543480 SM |
1334 | struct stop_reply : public notif_event |
1335 | { | |
1336 | ~stop_reply (); | |
1337 | ||
1338 | /* The identifier of the thread about this event */ | |
1339 | ptid_t ptid; | |
1340 | ||
1341 | /* The remote state this event is associated with. When the remote | |
1342 | connection, represented by a remote_state object, is closed, | |
1343 | all the associated stop_reply events should be released. */ | |
1344 | struct remote_state *rs; | |
1345 | ||
1346 | struct target_waitstatus ws; | |
1347 | ||
1348 | /* The architecture associated with the expedited registers. */ | |
1349 | gdbarch *arch; | |
1350 | ||
1351 | /* Expedited registers. This makes remote debugging a bit more | |
1352 | efficient for those targets that provide critical registers as | |
1353 | part of their normal status mechanism (as another roundtrip to | |
1354 | fetch them is avoided). */ | |
1355 | std::vector<cached_reg_t> regcache; | |
1356 | ||
1357 | enum target_stop_reason stop_reason; | |
1358 | ||
1359 | CORE_ADDR watch_data_address; | |
1360 | ||
1361 | int core; | |
1362 | }; | |
1363 | ||
06c7226e SM |
1364 | /* Return TARGET as a remote_target if it is one, else nullptr. */ |
1365 | ||
1366 | static remote_target * | |
1367 | as_remote_target (process_stratum_target *target) | |
1368 | { | |
1369 | return dynamic_cast<remote_target *> (target); | |
1370 | } | |
1371 | ||
24b2de7b AB |
1372 | /* See remote.h. */ |
1373 | ||
1374 | bool | |
1375 | is_remote_target (process_stratum_target *target) | |
1376 | { | |
06c7226e | 1377 | return as_remote_target (target) != nullptr; |
24b2de7b AB |
1378 | } |
1379 | ||
3c69da40 | 1380 | /* Per-program-space data key. */ |
08b8a139 | 1381 | static const registry<program_space>::key<char, gdb::xfree_deleter<char>> |
7b4a314f | 1382 | remote_pspace_data; |
2d717e4f | 1383 | |
3c69da40 PA |
1384 | /* The variable registered as the control variable used by the |
1385 | remote exec-file commands. While the remote exec-file setting is | |
7a78108a | 1386 | per-program-space, the set/show machinery uses this as the |
3c69da40 | 1387 | location of the remote exec-file value. */ |
e0700ba4 | 1388 | static std::string remote_exec_file_var; |
a6f3e723 | 1389 | |
3c69da40 PA |
1390 | /* The size to align memory write packets, when practical. The protocol |
1391 | does not guarantee any alignment, and gdb will generate short | |
1392 | writes and unaligned writes, but even as a best-effort attempt this | |
1393 | can improve bulk transfers. For instance, if a write is misaligned | |
1394 | relative to the target's data bus, the stub may need to make an extra | |
1395 | round trip fetching data from the target. This doesn't make a | |
1396 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 1397 | |
3c69da40 PA |
1398 | The alignment chosen is arbitrary; usually data bus width is |
1399 | important here, not the possibly larger cache line size. */ | |
1400 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 1401 | |
3c69da40 | 1402 | /* Prototypes for local functions. */ |
74531fed | 1403 | |
3c69da40 | 1404 | static int hexnumlen (ULONGEST num); |
782b2b07 | 1405 | |
3c69da40 | 1406 | static int stubhex (int ch); |
5d93a237 | 1407 | |
3c69da40 | 1408 | static int hexnumstr (char *, ULONGEST); |
048094ac | 1409 | |
3c69da40 | 1410 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 1411 | |
3c69da40 | 1412 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1413 | |
cecb1912 | 1414 | static int stub_unpack_int (const char *buff, int fieldlength); |
5e4a05c4 | 1415 | |
ff52c073 CS |
1416 | static void set_remote_protocol_packet_cmd (const char *args, int from_tty, |
1417 | cmd_list_element *c); | |
1418 | ||
1419 | static void show_packet_config_cmd (ui_file *file, | |
1420 | const unsigned int which_packet, | |
1421 | remote_target *remote); | |
b73be471 | 1422 | |
3c69da40 PA |
1423 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1424 | int from_tty, | |
1425 | struct cmd_list_element *c, | |
1426 | const char *value); | |
8e88304f | 1427 | |
3c69da40 | 1428 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1429 | |
eefce37f | 1430 | static bool remote_read_description_p (struct target_ops *target); |
88b496c3 | 1431 | |
05be00a8 | 1432 | static void remote_console_output (const char *msg); |
5965e028 | 1433 | |
3c69da40 | 1434 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1435 | |
5b6d1e4f | 1436 | static void remote_unpush_and_throw (remote_target *target); |
15a201c8 | 1437 | |
3c69da40 | 1438 | /* For "remote". */ |
80152258 | 1439 | |
3c69da40 | 1440 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1441 | |
3c69da40 | 1442 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1443 | |
3c69da40 PA |
1444 | static struct cmd_list_element *remote_set_cmdlist; |
1445 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1446 | |
3c69da40 | 1447 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1448 | |
491144b5 | 1449 | static bool use_range_stepping = true; |
3c69da40 | 1450 | |
c9d22089 SM |
1451 | /* From the remote target's point of view, each thread is in one of these three |
1452 | states. */ | |
1453 | enum class resume_state | |
1454 | { | |
1455 | /* Not resumed - we haven't been asked to resume this thread. */ | |
1456 | NOT_RESUMED, | |
1457 | ||
1458 | /* We have been asked to resume this thread, but haven't sent a vCont action | |
1459 | for it yet. We'll need to consider it next time commit_resume is | |
1460 | called. */ | |
1461 | RESUMED_PENDING_VCONT, | |
1462 | ||
1463 | /* We have been asked to resume this thread, and we have sent a vCont action | |
1464 | for it. */ | |
1465 | RESUMED, | |
1466 | }; | |
1467 | ||
1468 | /* Information about a thread's pending vCont-resume. Used when a thread is in | |
1469 | the remote_resume_state::RESUMED_PENDING_VCONT state. remote_target::resume | |
1470 | stores this information which is then picked up by | |
1471 | remote_target::commit_resume to know which is the proper action for this | |
1472 | thread to include in the vCont packet. */ | |
1473 | struct resumed_pending_vcont_info | |
1474 | { | |
1475 | /* True if the last resume call for this thread was a step request, false | |
1476 | if a continue request. */ | |
1477 | bool step; | |
1478 | ||
1479 | /* The signal specified in the last resume call for this thread. */ | |
1480 | gdb_signal sig; | |
1481 | }; | |
1482 | ||
7aabaf9d SM |
1483 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1484 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1485 | { |
7aabaf9d SM |
1486 | std::string extra; |
1487 | std::string name; | |
1488 | int core = -1; | |
799a2abe | 1489 | |
f6327dcb KB |
1490 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1491 | sequence of bytes. */ | |
7aabaf9d | 1492 | gdb::byte_vector thread_handle; |
f6327dcb | 1493 | |
799a2abe | 1494 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1495 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1496 | |
1497 | /* This is set to the data address of the access causing the target | |
1498 | to stop for a watchpoint. */ | |
7aabaf9d | 1499 | CORE_ADDR watch_data_address = 0; |
85ad3aaf | 1500 | |
c9d22089 | 1501 | /* Get the thread's resume state. */ |
a6c11cbb | 1502 | enum resume_state get_resume_state () const |
c9d22089 SM |
1503 | { |
1504 | return m_resume_state; | |
1505 | } | |
1506 | ||
1507 | /* Put the thread in the NOT_RESUMED state. */ | |
1508 | void set_not_resumed () | |
1509 | { | |
1510 | m_resume_state = resume_state::NOT_RESUMED; | |
1511 | } | |
85ad3aaf | 1512 | |
c9d22089 SM |
1513 | /* Put the thread in the RESUMED_PENDING_VCONT state. */ |
1514 | void set_resumed_pending_vcont (bool step, gdb_signal sig) | |
1515 | { | |
1516 | m_resume_state = resume_state::RESUMED_PENDING_VCONT; | |
1517 | m_resumed_pending_vcont_info.step = step; | |
1518 | m_resumed_pending_vcont_info.sig = sig; | |
1519 | } | |
85ad3aaf | 1520 | |
c9d22089 | 1521 | /* Get the information this thread's pending vCont-resumption. |
85ad3aaf | 1522 | |
c9d22089 SM |
1523 | Must only be called if the thread is in the RESUMED_PENDING_VCONT resume |
1524 | state. */ | |
1525 | const struct resumed_pending_vcont_info &resumed_pending_vcont_info () const | |
1526 | { | |
1527 | gdb_assert (m_resume_state == resume_state::RESUMED_PENDING_VCONT); | |
1528 | ||
1529 | return m_resumed_pending_vcont_info; | |
1530 | } | |
1531 | ||
1532 | /* Put the thread in the VCONT_RESUMED state. */ | |
1533 | void set_resumed () | |
1534 | { | |
1535 | m_resume_state = resume_state::RESUMED; | |
1536 | } | |
1537 | ||
1538 | private: | |
1539 | /* Resume state for this thread. This is used to implement vCont action | |
1540 | coalescing (only when the target operates in non-stop mode). | |
1541 | ||
1542 | remote_target::resume moves the thread to the RESUMED_PENDING_VCONT state, | |
1543 | which notes that this thread must be considered in the next commit_resume | |
1544 | call. | |
1545 | ||
1546 | remote_target::commit_resume sends a vCont packet with actions for the | |
1547 | threads in the RESUMED_PENDING_VCONT state and moves them to the | |
1548 | VCONT_RESUMED state. | |
1549 | ||
1550 | When reporting a stop to the core for a thread, that thread is moved back | |
1551 | to the NOT_RESUMED state. */ | |
1552 | enum resume_state m_resume_state = resume_state::NOT_RESUMED; | |
1553 | ||
1554 | /* Extra info used if the thread is in the RESUMED_PENDING_VCONT state. */ | |
1555 | struct resumed_pending_vcont_info m_resumed_pending_vcont_info; | |
dc146f7c VP |
1556 | }; |
1557 | ||
de44f5a7 | 1558 | remote_state::remote_state () |
8d64371b | 1559 | : buf (400) |
de44f5a7 | 1560 | { |
de44f5a7 PA |
1561 | } |
1562 | ||
1563 | remote_state::~remote_state () | |
1564 | { | |
1565 | xfree (this->last_pass_packet); | |
1566 | xfree (this->last_program_signals_packet); | |
de44f5a7 PA |
1567 | xfree (this->finished_object); |
1568 | xfree (this->finished_annex); | |
cf792862 TT |
1569 | } |
1570 | ||
35b1e5cc SS |
1571 | /* Utility: generate error from an incoming stub packet. */ |
1572 | static void | |
1573 | trace_error (char *buf) | |
1574 | { | |
1575 | if (*buf++ != 'E') | |
1576 | return; /* not an error msg */ | |
1577 | switch (*buf) | |
1578 | { | |
1579 | case '1': /* malformed packet error */ | |
1580 | if (*++buf == '0') /* general case: */ | |
1581 | error (_("remote.c: error in outgoing packet.")); | |
1582 | else | |
1583 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1584 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1585 | default: |
1586 | error (_("Target returns error code '%s'."), buf); | |
1587 | } | |
1588 | } | |
1589 | ||
1590 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1591 | |
6b8edb51 PA |
1592 | char * |
1593 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1594 | { |
b6bb3468 PA |
1595 | struct remote_state *rs = get_remote_state (); |
1596 | ||
35b1e5cc SS |
1597 | do /* Loop on reply from remote stub. */ |
1598 | { | |
1599 | char *buf; | |
a744cf53 | 1600 | |
0df8b418 | 1601 | QUIT; /* Allow user to bail out with ^C. */ |
aa7b36b8 | 1602 | getpkt (&rs->buf); |
8d64371b | 1603 | buf = rs->buf.data (); |
ad91cd99 | 1604 | if (buf[0] == 'E') |
35b1e5cc | 1605 | trace_error (buf); |
61012eef | 1606 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1607 | { |
1608 | ULONGEST ul; | |
1609 | CORE_ADDR from, to, org_to; | |
256642e8 | 1610 | const char *p, *pp; |
dde08ee1 | 1611 | int adjusted_size = 0; |
7556d4a4 | 1612 | int relocated = 0; |
dde08ee1 PA |
1613 | |
1614 | p = buf + strlen ("qRelocInsn:"); | |
1615 | pp = unpack_varlen_hex (p, &ul); | |
1616 | if (*pp != ';') | |
cb91c06a | 1617 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1618 | from = ul; |
1619 | ||
1620 | p = pp + 1; | |
a9cbf802 | 1621 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1622 | to = ul; |
1623 | ||
1624 | org_to = to; | |
1625 | ||
a70b8144 | 1626 | try |
dde08ee1 | 1627 | { |
99d9c3b9 SM |
1628 | gdbarch_relocate_instruction (current_inferior ()->arch (), |
1629 | &to, from); | |
7556d4a4 | 1630 | relocated = 1; |
dde08ee1 | 1631 | } |
230d2906 | 1632 | catch (const gdb_exception &ex) |
7556d4a4 PA |
1633 | { |
1634 | if (ex.error == MEMORY_ERROR) | |
1635 | { | |
1636 | /* Propagate memory errors silently back to the | |
1637 | target. The stub may have limited the range of | |
1638 | addresses we can write to, for example. */ | |
1639 | } | |
1640 | else | |
1641 | { | |
1642 | /* Something unexpectedly bad happened. Be verbose | |
1643 | so we can tell what, and propagate the error back | |
1644 | to the stub, so it doesn't get stuck waiting for | |
1645 | a response. */ | |
1646 | exception_fprintf (gdb_stderr, ex, | |
1647 | _("warning: relocating instruction: ")); | |
1648 | } | |
1649 | putpkt ("E01"); | |
1650 | } | |
1651 | ||
1652 | if (relocated) | |
dde08ee1 PA |
1653 | { |
1654 | adjusted_size = to - org_to; | |
1655 | ||
8d64371b | 1656 | xsnprintf (buf, rs->buf.size (), "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1657 | putpkt (buf); |
1658 | } | |
dde08ee1 | 1659 | } |
ad91cd99 | 1660 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1661 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1662 | else | |
0df8b418 | 1663 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1664 | } |
1665 | while (1); | |
1666 | } | |
3c3bea1c | 1667 | |
9d6eea31 PA |
1668 | struct remote_arch_state * |
1669 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1670 | { |
43c3a0e4 PA |
1671 | remote_arch_state *rsa; |
1672 | ||
1673 | auto it = this->m_arch_states.find (gdbarch); | |
1674 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1675 | { |
43c3a0e4 PA |
1676 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1677 | std::forward_as_tuple (gdbarch), | |
1678 | std::forward_as_tuple (gdbarch)); | |
1679 | rsa = &p.first->second; | |
9d6eea31 PA |
1680 | |
1681 | /* Make sure that the packet buffer is plenty big enough for | |
1682 | this architecture. */ | |
8d64371b TT |
1683 | if (this->buf.size () < rsa->remote_packet_size) |
1684 | this->buf.resize (2 * rsa->remote_packet_size); | |
9d6eea31 | 1685 | } |
43c3a0e4 PA |
1686 | else |
1687 | rsa = &it->second; | |
1688 | ||
1689 | return rsa; | |
d01949b6 AC |
1690 | } |
1691 | ||
0b83947e DJ |
1692 | /* Fetch the global remote target state. */ |
1693 | ||
6b8edb51 PA |
1694 | remote_state * |
1695 | remote_target::get_remote_state () | |
0b83947e DJ |
1696 | { |
1697 | /* Make sure that the remote architecture state has been | |
1698 | initialized, because doing so might reallocate rs->buf. Any | |
1699 | function which calls getpkt also needs to be mindful of changes | |
1700 | to rs->buf, but this call limits the number of places which run | |
1701 | into trouble. */ | |
99d9c3b9 | 1702 | m_remote_state.get_remote_arch_state (current_inferior ()->arch ()); |
0b83947e | 1703 | |
3c69da40 | 1704 | return &m_remote_state; |
0b83947e DJ |
1705 | } |
1706 | ||
94585166 DB |
1707 | /* Fetch the remote exec-file from the current program space. */ |
1708 | ||
1709 | static const char * | |
1710 | get_remote_exec_file (void) | |
1711 | { | |
1712 | char *remote_exec_file; | |
1713 | ||
7b4a314f | 1714 | remote_exec_file = remote_pspace_data.get (current_program_space); |
94585166 DB |
1715 | if (remote_exec_file == NULL) |
1716 | return ""; | |
1717 | ||
1718 | return remote_exec_file; | |
1719 | } | |
1720 | ||
1721 | /* Set the remote exec file for PSPACE. */ | |
1722 | ||
1723 | static void | |
1724 | set_pspace_remote_exec_file (struct program_space *pspace, | |
7b4a314f | 1725 | const char *remote_exec_file) |
94585166 | 1726 | { |
7b4a314f | 1727 | char *old_file = remote_pspace_data.get (pspace); |
94585166 DB |
1728 | |
1729 | xfree (old_file); | |
7b4a314f | 1730 | remote_pspace_data.set (pspace, xstrdup (remote_exec_file)); |
94585166 DB |
1731 | } |
1732 | ||
1733 | /* The "set/show remote exec-file" set command hook. */ | |
1734 | ||
1735 | static void | |
eb4c3f4a | 1736 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1737 | struct cmd_list_element *c) |
1738 | { | |
e0700ba4 SM |
1739 | set_pspace_remote_exec_file (current_program_space, |
1740 | remote_exec_file_var.c_str ()); | |
94585166 DB |
1741 | } |
1742 | ||
1743 | /* The "set/show remote exec-file" show command hook. */ | |
1744 | ||
1745 | static void | |
1746 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1747 | struct cmd_list_element *cmd, const char *value) | |
1748 | { | |
6cb06a8c | 1749 | gdb_printf (file, "%s\n", get_remote_exec_file ()); |
94585166 DB |
1750 | } |
1751 | ||
c21236dc PA |
1752 | static int |
1753 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1754 | { |
74ca34ce | 1755 | int regnum, num_remote_regs, offset; |
74ca34ce | 1756 | struct packet_reg **remote_regs; |
ea9c271d | 1757 | |
4a22f64d | 1758 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1759 | { |
c21236dc | 1760 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1761 | |
4a22f64d | 1762 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1763 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1764 | r->pnum = -1; | |
1765 | else | |
1766 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1767 | ||
b323314b | 1768 | r->regnum = regnum; |
74ca34ce DJ |
1769 | } |
1770 | ||
1771 | /* Define the g/G packet format as the contents of each register | |
1772 | with a remote protocol number, in order of ascending protocol | |
1773 | number. */ | |
1774 | ||
224c3ddb | 1775 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1776 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1777 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1778 | regnum++) |
c21236dc PA |
1779 | if (regs[regnum].pnum != -1) |
1780 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1781 | |
39ef2f62 CB |
1782 | std::sort (remote_regs, remote_regs + num_remote_regs, |
1783 | [] (const packet_reg *a, const packet_reg *b) | |
1784 | { return a->pnum < b->pnum; }); | |
74ca34ce DJ |
1785 | |
1786 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1787 | { | |
1788 | remote_regs[regnum]->in_g_packet = 1; | |
1789 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1790 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1791 | } |
1792 | ||
c21236dc PA |
1793 | return offset; |
1794 | } | |
1795 | ||
1796 | /* Given the architecture described by GDBARCH, return the remote | |
1797 | protocol register's number and the register's offset in the g/G | |
1798 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1799 | If the target does not have a mapping for REGNUM, return false, | |
1800 | otherwise, return true. */ | |
1801 | ||
1802 | int | |
1803 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1804 | int *pnum, int *poffset) | |
1805 | { | |
c21236dc PA |
1806 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1807 | ||
b80406ac | 1808 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1809 | |
b80406ac | 1810 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1811 | |
1812 | *pnum = regs[regnum].pnum; | |
1813 | *poffset = regs[regnum].offset; | |
1814 | ||
c21236dc PA |
1815 | return *pnum != -1; |
1816 | } | |
1817 | ||
9d6eea31 | 1818 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1819 | { |
c21236dc PA |
1820 | /* Use the architecture to build a regnum<->pnum table, which will be |
1821 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1822 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1823 | |
74ca34ce DJ |
1824 | /* Record the maximum possible size of the g packet - it may turn out |
1825 | to be smaller. */ | |
9d6eea31 PA |
1826 | this->sizeof_g_packet |
1827 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1828 | |
0df8b418 | 1829 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1830 | remote stubs have a hardwired buffer size of 400 bytes |
1831 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1832 | as the maximum packet-size to ensure that the packet and an extra | |
1833 | NUL character can always fit in the buffer. This stops GDB | |
1834 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1835 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1836 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1837 | |
ea9c271d | 1838 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1839 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1840 | |
1841 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1842 | default, adjust the size accordingly. Remember that each byte is |
1843 | encoded as two characters. 32 is the overhead for the packet | |
1844 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1845 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1846 | little. */ |
9d6eea31 PA |
1847 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1848 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1849 | } |
1850 | ||
6b8edb51 PA |
1851 | /* Get a pointer to the current remote target. If not connected to a |
1852 | remote target, return NULL. */ | |
1853 | ||
1854 | static remote_target * | |
1855 | get_current_remote_target () | |
1856 | { | |
5b6d1e4f | 1857 | target_ops *proc_target = current_inferior ()->process_target (); |
6b8edb51 PA |
1858 | return dynamic_cast<remote_target *> (proc_target); |
1859 | } | |
1860 | ||
ea9c271d DJ |
1861 | /* Return the current allowed size of a remote packet. This is |
1862 | inferred from the current architecture, and should be used to | |
1863 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1864 | long |
1865 | remote_target::get_remote_packet_size () | |
ea9c271d | 1866 | { |
be2a5f71 | 1867 | struct remote_state *rs = get_remote_state (); |
99d9c3b9 SM |
1868 | remote_arch_state *rsa |
1869 | = rs->get_remote_arch_state (current_inferior ()->arch ()); | |
ea9c271d | 1870 | |
be2a5f71 DJ |
1871 | if (rs->explicit_packet_size) |
1872 | return rs->explicit_packet_size; | |
1873 | ||
ea9c271d | 1874 | return rsa->remote_packet_size; |
d01949b6 AC |
1875 | } |
1876 | ||
ad10f812 | 1877 | static struct packet_reg * |
5cd63fda PA |
1878 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1879 | long regnum) | |
ad10f812 | 1880 | { |
5cd63fda | 1881 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1882 | return NULL; |
1883 | else | |
ad10f812 | 1884 | { |
ea9c271d | 1885 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1886 | |
b323314b AC |
1887 | gdb_assert (r->regnum == regnum); |
1888 | return r; | |
ad10f812 | 1889 | } |
ad10f812 AC |
1890 | } |
1891 | ||
1892 | static struct packet_reg * | |
5cd63fda PA |
1893 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1894 | LONGEST pnum) | |
ad10f812 | 1895 | { |
b323314b | 1896 | int i; |
a744cf53 | 1897 | |
5cd63fda | 1898 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1899 | { |
ea9c271d | 1900 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1901 | |
b323314b AC |
1902 | if (r->pnum == pnum) |
1903 | return r; | |
ad10f812 AC |
1904 | } |
1905 | return NULL; | |
d01949b6 AC |
1906 | } |
1907 | ||
9a7071a8 JB |
1908 | /* Allow the user to specify what sequence to send to the remote |
1909 | when he requests a program interruption: Although ^C is usually | |
1910 | what remote systems expect (this is the default, here), it is | |
1911 | sometimes preferable to send a break. On other systems such | |
1912 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1913 | is required in order to interrupt the execution. */ | |
1914 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1915 | const char interrupt_sequence_break[] = "BREAK"; | |
1916 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1917 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1918 | { |
1919 | interrupt_sequence_control_c, | |
1920 | interrupt_sequence_break, | |
1921 | interrupt_sequence_break_g, | |
1922 | NULL | |
1923 | }; | |
1924 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1925 | ||
1926 | static void | |
1927 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1928 | struct cmd_list_element *c, | |
1929 | const char *value) | |
1930 | { | |
1931 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
6cb06a8c TT |
1932 | gdb_printf (file, |
1933 | _("Send the ASCII ETX character (Ctrl-c) " | |
1934 | "to the remote target to interrupt the " | |
1935 | "execution of the program.\n")); | |
9a7071a8 | 1936 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
6cb06a8c TT |
1937 | gdb_printf (file, |
1938 | _("send a break signal to the remote target " | |
1939 | "to interrupt the execution of the program.\n")); | |
9a7071a8 | 1940 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
6cb06a8c TT |
1941 | gdb_printf (file, |
1942 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1943 | "the remote target to interrupt the execution " | |
1944 | "of Linux kernel.\n")); | |
9a7071a8 | 1945 | else |
f34652de | 1946 | internal_error (_("Invalid value for interrupt_sequence_mode: %s."), |
9a7071a8 JB |
1947 | interrupt_sequence_mode); |
1948 | } | |
6426a772 | 1949 | |
9a7071a8 JB |
1950 | /* This boolean variable specifies whether interrupt_sequence is sent |
1951 | to the remote target when gdb connects to it. | |
1952 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1953 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
491144b5 | 1954 | static bool interrupt_on_connect = false; |
c906108c | 1955 | |
9a7071a8 JB |
1956 | /* This variable is used to implement the "set/show remotebreak" commands. |
1957 | Since these commands are now deprecated in favor of "set/show remote | |
1958 | interrupt-sequence", it no longer has any effect on the code. */ | |
491144b5 | 1959 | static bool remote_break; |
c906108c | 1960 | |
9a7071a8 | 1961 | static void |
eb4c3f4a | 1962 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1963 | { |
1964 | if (remote_break) | |
1965 | interrupt_sequence_mode = interrupt_sequence_break; | |
1966 | else | |
1967 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1968 | } | |
1969 | ||
1970 | static void | |
1971 | show_remotebreak (struct ui_file *file, int from_tty, | |
1972 | struct cmd_list_element *c, | |
1973 | const char *value) | |
1974 | { | |
1975 | } | |
1976 | ||
c906108c SS |
1977 | /* This variable sets the number of bits in an address that are to be |
1978 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1979 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1980 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1981 | initial implementation of remote.c restricted the address sent in | |
1982 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1983 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1984 | address was never sent. Since fixing this bug may cause a break in | |
85102364 | 1985 | some remote targets this variable is principally provided to |
23860348 | 1986 | facilitate backward compatibility. */ |
c906108c | 1987 | |
883b9c6c | 1988 | static unsigned int remote_address_size; |
c906108c | 1989 | |
11cf8741 | 1990 | \f |
cc0be08f PA |
1991 | /* The default max memory-write-packet-size, when the setting is |
1992 | "fixed". The 16k is historical. (It came from older GDB's using | |
1993 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1994 | don't cope very well with large alloca calls.) */ | |
1995 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1996 | |
1997 | /* The minimum remote packet size for memory transfers. Ensures we | |
1998 | can write at least one byte. */ | |
1999 | #define MIN_MEMORY_PACKET_SIZE 20 | |
2000 | ||
cc0be08f PA |
2001 | /* Get the memory packet size, assuming it is fixed. */ |
2002 | ||
2003 | static long | |
2004 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
2005 | { | |
2006 | gdb_assert (config->fixed_p); | |
2007 | ||
2008 | if (config->size <= 0) | |
2009 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
2010 | else | |
2011 | return config->size; | |
2012 | } | |
2013 | ||
11cf8741 JM |
2014 | /* Compute the current size of a read/write packet. Since this makes |
2015 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
2016 | ||
6b8edb51 PA |
2017 | long |
2018 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 2019 | { |
d01949b6 | 2020 | struct remote_state *rs = get_remote_state (); |
99d9c3b9 SM |
2021 | remote_arch_state *rsa |
2022 | = rs->get_remote_arch_state (current_inferior ()->arch ()); | |
ea9c271d | 2023 | |
11cf8741 JM |
2024 | long what_they_get; |
2025 | if (config->fixed_p) | |
cc0be08f | 2026 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
2027 | else |
2028 | { | |
ea9c271d | 2029 | what_they_get = get_remote_packet_size (); |
23860348 | 2030 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
2031 | if (config->size > 0 |
2032 | && what_they_get > config->size) | |
2033 | what_they_get = config->size; | |
be2a5f71 DJ |
2034 | |
2035 | /* Limit it to the size of the targets ``g'' response unless we have | |
2036 | permission from the stub to use a larger packet size. */ | |
2037 | if (rs->explicit_packet_size == 0 | |
2038 | && rsa->actual_register_packet_size > 0 | |
2039 | && what_they_get > rsa->actual_register_packet_size) | |
2040 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 2041 | } |
a5c0808e PA |
2042 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
2043 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
2044 | |
2045 | /* Make sure there is room in the global buffer for this packet | |
2046 | (including its trailing NUL byte). */ | |
8d64371b TT |
2047 | if (rs->buf.size () < what_they_get + 1) |
2048 | rs->buf.resize (2 * what_they_get); | |
6d820c5c | 2049 | |
11cf8741 JM |
2050 | return what_they_get; |
2051 | } | |
2052 | ||
0df8b418 | 2053 | /* Update the size of a read/write packet. If they user wants |
23860348 | 2054 | something really big then do a sanity check. */ |
11cf8741 JM |
2055 | |
2056 | static void | |
fe4c3ca0 CS |
2057 | set_memory_packet_size (const char *args, struct memory_packet_config *config, |
2058 | bool target_connected) | |
11cf8741 JM |
2059 | { |
2060 | int fixed_p = config->fixed_p; | |
2061 | long size = config->size; | |
a744cf53 | 2062 | |
11cf8741 | 2063 | if (args == NULL) |
fe4c3ca0 | 2064 | error (_("Argument required (integer, \"fixed\" or \"limit\").")); |
11cf8741 JM |
2065 | else if (strcmp (args, "hard") == 0 |
2066 | || strcmp (args, "fixed") == 0) | |
2067 | fixed_p = 1; | |
2068 | else if (strcmp (args, "soft") == 0 | |
2069 | || strcmp (args, "limit") == 0) | |
2070 | fixed_p = 0; | |
2071 | else | |
2072 | { | |
2073 | char *end; | |
a744cf53 | 2074 | |
11cf8741 JM |
2075 | size = strtoul (args, &end, 0); |
2076 | if (args == end) | |
8a3fe4f8 | 2077 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
2078 | |
2079 | /* Instead of explicitly capping the size of a packet to or | |
2080 | disallowing it, the user is allowed to set the size to | |
2081 | something arbitrarily large. */ | |
11cf8741 | 2082 | } |
a5c0808e | 2083 | |
23860348 | 2084 | /* Extra checks? */ |
11cf8741 JM |
2085 | if (fixed_p && !config->fixed_p) |
2086 | { | |
cc0be08f PA |
2087 | /* So that the query shows the correct value. */ |
2088 | long query_size = (size <= 0 | |
2089 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
2090 | : size); | |
2091 | ||
fe4c3ca0 CS |
2092 | if (target_connected |
2093 | && !query (_("The target may not be able to correctly handle a %s\n" | |
2094 | "of %ld bytes. Change the packet size? "), | |
2095 | config->name, query_size)) | |
2096 | error (_("Packet size not changed.")); | |
2097 | else if (!target_connected | |
2098 | && !query (_("Future remote targets may not be able to " | |
2099 | "correctly handle a %s\nof %ld bytes. Change the " | |
2100 | "packet size for future remote targets? "), | |
2101 | config->name, query_size)) | |
8a3fe4f8 | 2102 | error (_("Packet size not changed.")); |
11cf8741 | 2103 | } |
23860348 | 2104 | /* Update the config. */ |
11cf8741 JM |
2105 | config->fixed_p = fixed_p; |
2106 | config->size = size; | |
fe4c3ca0 CS |
2107 | |
2108 | const char *target_type = get_target_type_name (target_connected); | |
2109 | gdb_printf (_("The %s %s is set to \"%s\".\n"), config->name, target_type, | |
2110 | args); | |
2111 | ||
11cf8741 JM |
2112 | } |
2113 | ||
fe4c3ca0 CS |
2114 | /* Show the memory-read or write-packet size configuration CONFIG of the |
2115 | target REMOTE. If REMOTE is nullptr, the default configuration for future | |
2116 | remote targets should be passed in CONFIG. */ | |
2117 | ||
11cf8741 | 2118 | static void |
fe4c3ca0 | 2119 | show_memory_packet_size (memory_packet_config *config, remote_target *remote) |
11cf8741 | 2120 | { |
fe4c3ca0 CS |
2121 | const char *target_type = get_target_type_name (remote != nullptr); |
2122 | ||
cc0be08f | 2123 | if (config->size == 0) |
fe4c3ca0 | 2124 | gdb_printf (_("The %s %s is 0 (default). "), config->name, target_type); |
cc0be08f | 2125 | else |
fe4c3ca0 CS |
2126 | gdb_printf (_("The %s %s is %ld. "), config->name, target_type, |
2127 | config->size); | |
2128 | ||
11cf8741 | 2129 | if (config->fixed_p) |
6cb06a8c TT |
2130 | gdb_printf (_("Packets are fixed at %ld bytes.\n"), |
2131 | get_fixed_memory_packet_size (config)); | |
11cf8741 | 2132 | else |
cc0be08f | 2133 | { |
fe4c3ca0 | 2134 | if (remote != nullptr) |
6cb06a8c TT |
2135 | gdb_printf (_("Packets are limited to %ld bytes.\n"), |
2136 | remote->get_memory_packet_size (config)); | |
cc0be08f | 2137 | else |
0426ad51 TT |
2138 | gdb_puts ("The actual limit will be further reduced " |
2139 | "dependent on the target.\n"); | |
cc0be08f | 2140 | } |
11cf8741 JM |
2141 | } |
2142 | ||
fe4c3ca0 CS |
2143 | /* Configure the memory-write-packet size of the currently selected target. If |
2144 | no target is available, the default configuration for future remote targets | |
2145 | is configured. */ | |
11cf8741 JM |
2146 | |
2147 | static void | |
ac88e2de | 2148 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 | 2149 | { |
fe4c3ca0 CS |
2150 | remote_target *remote = get_current_remote_target (); |
2151 | if (remote != nullptr) | |
2152 | { | |
2153 | set_memory_packet_size | |
2154 | (args, &remote->m_features.m_memory_write_packet_config, true); | |
2155 | } | |
2156 | else | |
2157 | { | |
2158 | memory_packet_config* config = &memory_write_packet_config; | |
2159 | set_memory_packet_size (args, config, false); | |
2160 | } | |
11cf8741 JM |
2161 | } |
2162 | ||
fe4c3ca0 CS |
2163 | /* Display the memory-write-packet size of the currently selected target. If |
2164 | no target is available, the default configuration for future remote targets | |
2165 | is shown. */ | |
2166 | ||
11cf8741 | 2167 | static void |
ac88e2de | 2168 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 | 2169 | { |
fe4c3ca0 CS |
2170 | remote_target *remote = get_current_remote_target (); |
2171 | if (remote != nullptr) | |
2172 | show_memory_packet_size (&remote->m_features.m_memory_write_packet_config, | |
2173 | remote); | |
2174 | else | |
2175 | show_memory_packet_size (&memory_write_packet_config, nullptr); | |
11cf8741 JM |
2176 | } |
2177 | ||
055303e2 AB |
2178 | /* Show the number of hardware watchpoints that can be used. */ |
2179 | ||
2180 | static void | |
2181 | show_hardware_watchpoint_limit (struct ui_file *file, int from_tty, | |
2182 | struct cmd_list_element *c, | |
2183 | const char *value) | |
2184 | { | |
6cb06a8c TT |
2185 | gdb_printf (file, _("The maximum number of target hardware " |
2186 | "watchpoints is %s.\n"), value); | |
055303e2 AB |
2187 | } |
2188 | ||
2189 | /* Show the length limit (in bytes) for hardware watchpoints. */ | |
2190 | ||
2191 | static void | |
2192 | show_hardware_watchpoint_length_limit (struct ui_file *file, int from_tty, | |
2193 | struct cmd_list_element *c, | |
2194 | const char *value) | |
2195 | { | |
6cb06a8c TT |
2196 | gdb_printf (file, _("The maximum length (in bytes) of a target " |
2197 | "hardware watchpoint is %s.\n"), value); | |
055303e2 AB |
2198 | } |
2199 | ||
2200 | /* Show the number of hardware breakpoints that can be used. */ | |
2201 | ||
2202 | static void | |
2203 | show_hardware_breakpoint_limit (struct ui_file *file, int from_tty, | |
2204 | struct cmd_list_element *c, | |
2205 | const char *value) | |
2206 | { | |
6cb06a8c TT |
2207 | gdb_printf (file, _("The maximum number of target hardware " |
2208 | "breakpoints is %s.\n"), value); | |
055303e2 AB |
2209 | } |
2210 | ||
6cc8564b LM |
2211 | /* Controls the maximum number of characters to display in the debug output |
2212 | for each remote packet. The remaining characters are omitted. */ | |
2213 | ||
2214 | static int remote_packet_max_chars = 512; | |
2215 | ||
2216 | /* Show the maximum number of characters to display for each remote packet | |
2217 | when remote debugging is enabled. */ | |
2218 | ||
2219 | static void | |
2220 | show_remote_packet_max_chars (struct ui_file *file, int from_tty, | |
2221 | struct cmd_list_element *c, | |
2222 | const char *value) | |
2223 | { | |
6cb06a8c TT |
2224 | gdb_printf (file, _("Number of remote packet characters to " |
2225 | "display is %s.\n"), value); | |
6cc8564b LM |
2226 | } |
2227 | ||
6b8edb51 PA |
2228 | long |
2229 | remote_target::get_memory_write_packet_size () | |
11cf8741 | 2230 | { |
fe4c3ca0 | 2231 | return get_memory_packet_size (&m_features.m_memory_write_packet_config); |
11cf8741 JM |
2232 | } |
2233 | ||
fe4c3ca0 CS |
2234 | /* Configure the memory-read-packet size of the currently selected target. If |
2235 | no target is available, the default configuration for future remote targets | |
2236 | is adapted. */ | |
11cf8741 JM |
2237 | |
2238 | static void | |
ac88e2de | 2239 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 | 2240 | { |
fe4c3ca0 CS |
2241 | remote_target *remote = get_current_remote_target (); |
2242 | if (remote != nullptr) | |
2243 | set_memory_packet_size | |
2244 | (args, &remote->m_features.m_memory_read_packet_config, true); | |
2245 | else | |
2246 | { | |
2247 | memory_packet_config* config = &memory_read_packet_config; | |
2248 | set_memory_packet_size (args, config, false); | |
2249 | } | |
2250 | ||
11cf8741 JM |
2251 | } |
2252 | ||
fe4c3ca0 CS |
2253 | /* Display the memory-read-packet size of the currently selected target. If |
2254 | no target is available, the default configuration for future remote targets | |
2255 | is shown. */ | |
2256 | ||
11cf8741 | 2257 | static void |
ac88e2de | 2258 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 | 2259 | { |
fe4c3ca0 CS |
2260 | remote_target *remote = get_current_remote_target (); |
2261 | if (remote != nullptr) | |
2262 | show_memory_packet_size (&remote->m_features.m_memory_read_packet_config, | |
2263 | remote); | |
2264 | else | |
2265 | show_memory_packet_size (&memory_read_packet_config, nullptr); | |
11cf8741 JM |
2266 | } |
2267 | ||
6b8edb51 PA |
2268 | long |
2269 | remote_target::get_memory_read_packet_size () | |
11cf8741 | 2270 | { |
fe4c3ca0 | 2271 | long size = get_memory_packet_size (&m_features.m_memory_read_packet_config); |
a744cf53 | 2272 | |
11cf8741 JM |
2273 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
2274 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
2275 | increased beyond this. */ |
2276 | if (size > get_remote_packet_size ()) | |
2277 | size = get_remote_packet_size (); | |
11cf8741 JM |
2278 | return size; |
2279 | } | |
2280 | ||
ff52c073 | 2281 | static enum packet_support packet_config_support (const packet_config *config); |
5a2468f5 | 2282 | |
4082afcc | 2283 | |
ff52c073 CS |
2284 | static void |
2285 | set_remote_protocol_packet_cmd (const char *args, int from_tty, | |
2286 | cmd_list_element *c) | |
2287 | { | |
2288 | remote_target *remote = get_current_remote_target (); | |
2289 | gdb_assert (c->var.has_value ()); | |
4082afcc | 2290 | |
ff52c073 CS |
2291 | auto *default_config = static_cast<packet_config *> (c->context ()); |
2292 | const int packet_idx = std::distance (remote_protocol_packets, | |
2293 | default_config); | |
fcef6471 | 2294 | |
ff52c073 CS |
2295 | if (packet_idx >= 0 && packet_idx < PACKET_MAX) |
2296 | { | |
2297 | const char *name = packets_descriptions[packet_idx].name; | |
2298 | const auto_boolean value = c->var->get<auto_boolean> (); | |
2299 | const char *support = get_packet_support_name (value); | |
2300 | const char *target_type = get_target_type_name (remote != nullptr); | |
5a2468f5 | 2301 | |
ff52c073 CS |
2302 | if (remote != nullptr) |
2303 | remote->m_features.m_protocol_packets[packet_idx].detect = value; | |
2304 | else | |
2305 | remote_protocol_packets[packet_idx].detect = value; | |
2306 | ||
2307 | gdb_printf (_("Support for the '%s' packet %s is set to \"%s\".\n"), name, | |
2308 | target_type, support); | |
2309 | return; | |
2310 | } | |
2311 | ||
2312 | internal_error (_("Could not find config for %s"), c->name); | |
2313 | } | |
5a2468f5 JM |
2314 | |
2315 | static void | |
ff52c073 CS |
2316 | show_packet_config_cmd (ui_file *file, const unsigned int which_packet, |
2317 | remote_target *remote) | |
5a2468f5 | 2318 | { |
a121b7c1 | 2319 | const char *support = "internal-error"; |
ff52c073 CS |
2320 | const char *target_type = get_target_type_name (remote != nullptr); |
2321 | ||
2322 | packet_config *config; | |
2323 | if (remote != nullptr) | |
2324 | config = &remote->m_features.m_protocol_packets[which_packet]; | |
2325 | else | |
2326 | config = &remote_protocol_packets[which_packet]; | |
a744cf53 | 2327 | |
4082afcc | 2328 | switch (packet_config_support (config)) |
5a2468f5 JM |
2329 | { |
2330 | case PACKET_ENABLE: | |
2331 | support = "enabled"; | |
2332 | break; | |
2333 | case PACKET_DISABLE: | |
2334 | support = "disabled"; | |
2335 | break; | |
2336 | case PACKET_SUPPORT_UNKNOWN: | |
2337 | support = "unknown"; | |
2338 | break; | |
2339 | } | |
2340 | switch (config->detect) | |
2341 | { | |
7f19b9a2 | 2342 | case AUTO_BOOLEAN_AUTO: |
6cb06a8c | 2343 | gdb_printf (file, |
ff52c073 CS |
2344 | _("Support for the '%s' packet %s is \"auto\", " |
2345 | "currently %s.\n"), | |
2346 | packets_descriptions[which_packet].name, target_type, | |
2347 | support); | |
5a2468f5 | 2348 | break; |
7f19b9a2 AC |
2349 | case AUTO_BOOLEAN_TRUE: |
2350 | case AUTO_BOOLEAN_FALSE: | |
6cb06a8c | 2351 | gdb_printf (file, |
ff52c073 CS |
2352 | _("Support for the '%s' packet %s is \"%s\".\n"), |
2353 | packets_descriptions[which_packet].name, target_type, | |
2354 | get_packet_support_name (config->detect)); | |
8e248173 | 2355 | break; |
5a2468f5 JM |
2356 | } |
2357 | } | |
2358 | ||
2359 | static void | |
ff52c073 | 2360 | add_packet_config_cmd (const unsigned int which_packet, const char *name, |
bb572ddd | 2361 | const char *title, int legacy) |
d471ea57 | 2362 | { |
ff52c073 CS |
2363 | packets_descriptions[which_packet].name = name; |
2364 | packets_descriptions[which_packet].title = title; | |
2365 | ||
2366 | packet_config *config = &remote_protocol_packets[which_packet]; | |
2367 | ||
8579fd13 AB |
2368 | gdb::unique_xmalloc_ptr<char> set_doc |
2369 | = xstrprintf ("Set use of remote protocol `%s' (%s) packet.", | |
2370 | name, title); | |
2371 | gdb::unique_xmalloc_ptr<char> show_doc | |
2372 | = xstrprintf ("Show current use of remote protocol `%s' (%s) packet.", | |
2373 | name, title); | |
d471ea57 | 2374 | /* set/show TITLE-packet {auto,on,off} */ |
8579fd13 | 2375 | gdb::unique_xmalloc_ptr<char> cmd_name = xstrprintf ("%s-packet", title); |
5e84b7ee | 2376 | set_show_commands cmds |
8579fd13 AB |
2377 | = add_setshow_auto_boolean_cmd (cmd_name.release (), class_obscure, |
2378 | &config->detect, set_doc.get (), | |
2379 | show_doc.get (), NULL, /* help_doc */ | |
ff52c073 | 2380 | set_remote_protocol_packet_cmd, |
5e84b7ee SM |
2381 | show_remote_protocol_packet_cmd, |
2382 | &remote_set_cmdlist, &remote_show_cmdlist); | |
ff52c073 CS |
2383 | cmds.show->set_context (config); |
2384 | cmds.set->set_context (config); | |
5e84b7ee | 2385 | |
23860348 | 2386 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
2387 | if (legacy) |
2388 | { | |
5f21c7aa AB |
2389 | /* It's not clear who should take ownership of the LEGACY_NAME string |
2390 | created below, so, for now, place the string into a static vector | |
2391 | which ensures the strings is released when GDB exits. */ | |
2392 | static std::vector<gdb::unique_xmalloc_ptr<char>> legacy_names; | |
2393 | gdb::unique_xmalloc_ptr<char> legacy_name | |
8579fd13 AB |
2394 | = xstrprintf ("%s-packet", name); |
2395 | add_alias_cmd (legacy_name.get (), cmds.set, class_obscure, 0, | |
bb572ddd | 2396 | &remote_set_cmdlist); |
8579fd13 | 2397 | add_alias_cmd (legacy_name.get (), cmds.show, class_obscure, 0, |
bb572ddd | 2398 | &remote_show_cmdlist); |
5f21c7aa | 2399 | legacy_names.emplace_back (std::move (legacy_name)); |
d471ea57 | 2400 | } |
5a2468f5 JM |
2401 | } |
2402 | ||
d471ea57 | 2403 | static enum packet_result |
a76d924d | 2404 | packet_check_result (const char *buf) |
5a2468f5 | 2405 | { |
d471ea57 | 2406 | if (buf[0] != '\0') |
5a2468f5 | 2407 | { |
d471ea57 | 2408 | /* The stub recognized the packet request. Check that the |
23860348 | 2409 | operation succeeded. */ |
a76d924d DJ |
2410 | if (buf[0] == 'E' |
2411 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
2412 | && buf[3] == '\0') | |
85102364 | 2413 | /* "Enn" - definitely an error. */ |
a76d924d DJ |
2414 | return PACKET_ERROR; |
2415 | ||
2416 | /* Always treat "E." as an error. This will be used for | |
2417 | more verbose error messages, such as E.memtypes. */ | |
2418 | if (buf[0] == 'E' && buf[1] == '.') | |
2419 | return PACKET_ERROR; | |
2420 | ||
2421 | /* The packet may or may not be OK. Just assume it is. */ | |
2422 | return PACKET_OK; | |
2423 | } | |
2424 | else | |
2425 | /* The stub does not support the packet. */ | |
2426 | return PACKET_UNKNOWN; | |
2427 | } | |
2428 | ||
8d64371b TT |
2429 | static enum packet_result |
2430 | packet_check_result (const gdb::char_vector &buf) | |
2431 | { | |
2432 | return packet_check_result (buf.data ()); | |
2433 | } | |
2434 | ||
ff52c073 CS |
2435 | packet_result |
2436 | remote_features::packet_ok (const char *buf, const int which_packet) | |
a76d924d | 2437 | { |
ff52c073 CS |
2438 | packet_config *config = &m_protocol_packets[which_packet]; |
2439 | packet_description *descr = &packets_descriptions[which_packet]; | |
2440 | ||
a76d924d DJ |
2441 | enum packet_result result; |
2442 | ||
4082afcc PA |
2443 | if (config->detect != AUTO_BOOLEAN_TRUE |
2444 | && config->support == PACKET_DISABLE) | |
f34652de | 2445 | internal_error (_("packet_ok: attempt to use a disabled packet")); |
4082afcc | 2446 | |
a76d924d DJ |
2447 | result = packet_check_result (buf); |
2448 | switch (result) | |
2449 | { | |
2450 | case PACKET_OK: | |
2451 | case PACKET_ERROR: | |
2452 | /* The stub recognized the packet request. */ | |
4082afcc | 2453 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 2454 | { |
2189c312 | 2455 | remote_debug_printf ("Packet %s (%s) is supported", |
ff52c073 | 2456 | descr->name, descr->title); |
d471ea57 | 2457 | config->support = PACKET_ENABLE; |
d471ea57 | 2458 | } |
a76d924d DJ |
2459 | break; |
2460 | case PACKET_UNKNOWN: | |
23860348 | 2461 | /* The stub does not support the packet. */ |
4082afcc PA |
2462 | if (config->detect == AUTO_BOOLEAN_AUTO |
2463 | && config->support == PACKET_ENABLE) | |
d471ea57 | 2464 | { |
4082afcc PA |
2465 | /* If the stub previously indicated that the packet was |
2466 | supported then there is a protocol error. */ | |
2467 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
ff52c073 | 2468 | descr->name, descr->title); |
4082afcc PA |
2469 | } |
2470 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
2471 | { | |
2472 | /* The user set it wrong. */ | |
2473 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
ff52c073 | 2474 | descr->name, descr->title); |
d471ea57 | 2475 | } |
4082afcc | 2476 | |
ff52c073 CS |
2477 | remote_debug_printf ("Packet %s (%s) is NOT supported", descr->name, |
2478 | descr->title); | |
4082afcc | 2479 | config->support = PACKET_DISABLE; |
a76d924d | 2480 | break; |
5a2468f5 | 2481 | } |
a76d924d DJ |
2482 | |
2483 | return result; | |
5a2468f5 JM |
2484 | } |
2485 | ||
ff52c073 CS |
2486 | packet_result |
2487 | remote_features::packet_ok (const gdb::char_vector &buf, const int which_packet) | |
f7e6eed5 | 2488 | { |
ff52c073 | 2489 | return packet_ok (buf.data (), which_packet); |
f7e6eed5 PA |
2490 | } |
2491 | ||
4082afcc PA |
2492 | /* Returns whether a given packet or feature is supported. This takes |
2493 | into account the state of the corresponding "set remote foo-packet" | |
2494 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2495 | |
4082afcc | 2496 | static enum packet_support |
ff52c073 | 2497 | packet_config_support (const packet_config *config) |
4082afcc PA |
2498 | { |
2499 | switch (config->detect) | |
444abaca | 2500 | { |
4082afcc PA |
2501 | case AUTO_BOOLEAN_TRUE: |
2502 | return PACKET_ENABLE; | |
2503 | case AUTO_BOOLEAN_FALSE: | |
2504 | return PACKET_DISABLE; | |
2505 | case AUTO_BOOLEAN_AUTO: | |
2506 | return config->support; | |
2507 | default: | |
557b4d76 | 2508 | gdb_assert_not_reached ("bad switch"); |
444abaca | 2509 | } |
4082afcc PA |
2510 | } |
2511 | ||
ff52c073 CS |
2512 | packet_support |
2513 | remote_features::packet_support (int packet) const | |
4082afcc | 2514 | { |
ff52c073 | 2515 | const packet_config *config = &m_protocol_packets[packet]; |
4082afcc | 2516 | return packet_config_support (config); |
dc8acb97 MS |
2517 | } |
2518 | ||
5a2468f5 | 2519 | static void |
444abaca DJ |
2520 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2521 | struct cmd_list_element *c, | |
2522 | const char *value) | |
5a2468f5 | 2523 | { |
ff52c073 | 2524 | remote_target *remote = get_current_remote_target (); |
1d7fe7f0 | 2525 | gdb_assert (c->var.has_value ()); |
5a2468f5 | 2526 | |
ff52c073 CS |
2527 | auto *default_config = static_cast<packet_config *> (c->context ()); |
2528 | const int packet_idx = std::distance (remote_protocol_packets, | |
2529 | default_config); | |
2530 | ||
2531 | if (packet_idx >= 0 && packet_idx < PACKET_MAX) | |
444abaca | 2532 | { |
ff52c073 CS |
2533 | show_packet_config_cmd (file, packet_idx, remote); |
2534 | return; | |
444abaca | 2535 | } |
ff52c073 | 2536 | internal_error (_("Could not find config for %s"), c->name); |
5a2468f5 JM |
2537 | } |
2538 | ||
d471ea57 AC |
2539 | /* Should we try one of the 'Z' requests? */ |
2540 | ||
2541 | enum Z_packet_type | |
2542 | { | |
2543 | Z_PACKET_SOFTWARE_BP, | |
2544 | Z_PACKET_HARDWARE_BP, | |
2545 | Z_PACKET_WRITE_WP, | |
2546 | Z_PACKET_READ_WP, | |
2547 | Z_PACKET_ACCESS_WP, | |
2548 | NR_Z_PACKET_TYPES | |
2549 | }; | |
96baa820 | 2550 | |
d471ea57 | 2551 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2552 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2553 | |
7f19b9a2 | 2554 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2555 | |
2556 | static void | |
eb4c3f4a | 2557 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2558 | struct cmd_list_element *c) |
96baa820 | 2559 | { |
ff52c073 | 2560 | remote_target *remote = get_current_remote_target (); |
d471ea57 | 2561 | int i; |
a744cf53 | 2562 | |
d471ea57 | 2563 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
ff52c073 CS |
2564 | { |
2565 | if (remote != nullptr) | |
2566 | remote->m_features.m_protocol_packets[PACKET_Z0 + i].detect | |
2567 | = remote_Z_packet_detect; | |
2568 | else | |
2569 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; | |
2570 | } | |
2571 | ||
2572 | const char *support = get_packet_support_name (remote_Z_packet_detect); | |
2573 | const char *target_type = get_target_type_name (remote != nullptr); | |
2574 | gdb_printf (_("Use of Z packets %s is set to \"%s\".\n"), target_type, | |
2575 | support); | |
2576 | ||
96baa820 JM |
2577 | } |
2578 | ||
2579 | static void | |
08546159 AC |
2580 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2581 | struct cmd_list_element *c, | |
2582 | const char *value) | |
96baa820 | 2583 | { |
ff52c073 | 2584 | remote_target *remote = get_current_remote_target (); |
d471ea57 | 2585 | int i; |
a744cf53 | 2586 | |
d471ea57 | 2587 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
ff52c073 | 2588 | show_packet_config_cmd (file, PACKET_Z0 + i, remote); |
2c2e7f87 LM |
2589 | } |
2590 | ||
cbb8991c DB |
2591 | /* Insert fork catchpoint target routine. If fork events are enabled |
2592 | then return success, nothing more to do. */ | |
2593 | ||
f6ac5f3d PA |
2594 | int |
2595 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c | 2596 | { |
ff52c073 | 2597 | return !m_features.remote_fork_event_p (); |
cbb8991c DB |
2598 | } |
2599 | ||
2600 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2601 | return success. */ | |
2602 | ||
f6ac5f3d PA |
2603 | int |
2604 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2605 | { |
2606 | return 0; | |
2607 | } | |
2608 | ||
2609 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2610 | then return success, nothing more to do. */ | |
2611 | ||
f6ac5f3d PA |
2612 | int |
2613 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c | 2614 | { |
ff52c073 | 2615 | return !m_features.remote_vfork_event_p (); |
cbb8991c DB |
2616 | } |
2617 | ||
2618 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2619 | return success. */ | |
2620 | ||
f6ac5f3d PA |
2621 | int |
2622 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2623 | { |
2624 | return 0; | |
2625 | } | |
2626 | ||
d46addbb DB |
2627 | /* Insert exec catchpoint target routine. If exec events are |
2628 | enabled, just return success. */ | |
2629 | ||
f6ac5f3d PA |
2630 | int |
2631 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb | 2632 | { |
ff52c073 | 2633 | return !m_features.remote_exec_event_p (); |
d46addbb DB |
2634 | } |
2635 | ||
2636 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2637 | return success. */ | |
2638 | ||
f6ac5f3d PA |
2639 | int |
2640 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2641 | { |
2642 | return 0; | |
2643 | } | |
2644 | ||
c906108c SS |
2645 | \f |
2646 | ||
ffdd69cf TT |
2647 | /* Take advantage of the fact that the TID field is not used, to tag |
2648 | special ptids with it set to != 0. */ | |
2649 | static const ptid_t magic_null_ptid (42000, -1, 1); | |
2650 | static const ptid_t not_sent_ptid (42000, -2, 1); | |
2651 | static const ptid_t any_thread_ptid (42000, 0, 1); | |
79d7f229 | 2652 | |
0b16c5cf PA |
2653 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2654 | detach instead of killing it when bailing out). */ | |
2655 | ||
6b8edb51 PA |
2656 | int |
2657 | remote_target::remote_query_attached (int pid) | |
0b16c5cf PA |
2658 | { |
2659 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2660 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2661 | |
ff52c073 | 2662 | if (m_features.packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2663 | return 0; |
2664 | ||
ff52c073 | 2665 | if (m_features.remote_multi_process_p ()) |
8d64371b | 2666 | xsnprintf (rs->buf.data (), size, "qAttached:%x", pid); |
0b16c5cf | 2667 | else |
8d64371b | 2668 | xsnprintf (rs->buf.data (), size, "qAttached"); |
0b16c5cf PA |
2669 | |
2670 | putpkt (rs->buf); | |
aa7b36b8 | 2671 | getpkt (&rs->buf); |
0b16c5cf | 2672 | |
ff52c073 | 2673 | switch (m_features.packet_ok (rs->buf, PACKET_qAttached)) |
0b16c5cf PA |
2674 | { |
2675 | case PACKET_OK: | |
8d64371b | 2676 | if (strcmp (rs->buf.data (), "1") == 0) |
0b16c5cf PA |
2677 | return 1; |
2678 | break; | |
2679 | case PACKET_ERROR: | |
8d64371b | 2680 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
0b16c5cf PA |
2681 | break; |
2682 | case PACKET_UNKNOWN: | |
2683 | break; | |
2684 | } | |
2685 | ||
2686 | return 0; | |
2687 | } | |
2688 | ||
49c62f2e PA |
2689 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2690 | has been invented by GDB, instead of reported by the target. Since | |
2691 | we can be connected to a remote system before before knowing about | |
2692 | any inferior, mark the target with execution when we find the first | |
2693 | inferior. If ATTACHED is 1, then we had just attached to this | |
2694 | inferior. If it is 0, then we just created this inferior. If it | |
2695 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2696 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2697 | attempt to open this inferior's executable as the main executable | |
2698 | if no main executable is open already. */ | |
1941c569 | 2699 | |
6b8edb51 | 2700 | inferior * |
9ab8741a | 2701 | remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 | 2702 | int try_open_exec) |
1941c569 | 2703 | { |
1941c569 PA |
2704 | struct inferior *inf; |
2705 | ||
0b16c5cf PA |
2706 | /* Check whether this process we're learning about is to be |
2707 | considered attached, or if is to be considered to have been | |
2708 | spawned by the stub. */ | |
2709 | if (attached == -1) | |
2710 | attached = remote_query_attached (pid); | |
2711 | ||
99d9c3b9 | 2712 | if (gdbarch_has_global_solist (current_inferior ()->arch ())) |
6c95b8df PA |
2713 | { |
2714 | /* If the target shares code across all inferiors, then every | |
2715 | attach adds a new inferior. */ | |
2716 | inf = add_inferior (pid); | |
2717 | ||
2718 | /* ... and every inferior is bound to the same program space. | |
2719 | However, each inferior may still have its own address | |
2720 | space. */ | |
2721 | inf->aspace = maybe_new_address_space (); | |
2722 | inf->pspace = current_program_space; | |
2723 | } | |
2724 | else | |
2725 | { | |
2726 | /* In the traditional debugging scenario, there's a 1-1 match | |
2727 | between program/address spaces. We simply bind the inferior | |
2728 | to the program space's address space. */ | |
2729 | inf = current_inferior (); | |
78f2c40a PA |
2730 | |
2731 | /* However, if the current inferior is already bound to a | |
2732 | process, find some other empty inferior. */ | |
2733 | if (inf->pid != 0) | |
2734 | { | |
2735 | inf = nullptr; | |
2736 | for (inferior *it : all_inferiors ()) | |
2737 | if (it->pid == 0) | |
2738 | { | |
2739 | inf = it; | |
2740 | break; | |
2741 | } | |
2742 | } | |
2743 | if (inf == nullptr) | |
2744 | { | |
2745 | /* Since all inferiors were already bound to a process, add | |
2746 | a new inferior. */ | |
2747 | inf = add_inferior_with_spaces (); | |
2748 | } | |
2749 | switch_to_inferior_no_thread (inf); | |
02980c56 | 2750 | inf->push_target (this); |
6c95b8df PA |
2751 | inferior_appeared (inf, pid); |
2752 | } | |
1941c569 | 2753 | |
0b16c5cf | 2754 | inf->attach_flag = attached; |
49c62f2e | 2755 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2756 | |
1b6e6f5c GB |
2757 | /* If no main executable is currently open then attempt to |
2758 | open the file that was executed to create this inferior. */ | |
835205d0 | 2759 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2760 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2761 | |
a2fedca9 PW |
2762 | /* Check for exec file mismatch, and let the user solve it. */ |
2763 | validate_exec_file (1); | |
2764 | ||
1941c569 PA |
2765 | return inf; |
2766 | } | |
2767 | ||
7aabaf9d | 2768 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
5b6d1e4f PA |
2769 | static remote_thread_info *get_remote_thread_info (remote_target *target, |
2770 | ptid_t ptid); | |
85ad3aaf | 2771 | |
1941c569 | 2772 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
b622494e AB |
2773 | according to EXECUTING and RUNNING respectively. If SILENT_P (or the |
2774 | remote_state::starting_up flag) is true then the new thread is added | |
2775 | silently, otherwise the new thread will be announced to the user. */ | |
1941c569 | 2776 | |
00431a78 | 2777 | thread_info * |
b622494e AB |
2778 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing, |
2779 | bool silent_p) | |
c906108c | 2780 | { |
b7ea362b | 2781 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2782 | struct thread_info *thread; |
b7ea362b PA |
2783 | |
2784 | /* GDB historically didn't pull threads in the initial connection | |
2785 | setup. If the remote target doesn't even have a concept of | |
2786 | threads (e.g., a bare-metal target), even if internally we | |
2787 | consider that a single-threaded target, mentioning a new thread | |
2788 | might be confusing to the user. Be silent then, preserving the | |
2789 | age old behavior. */ | |
b622494e | 2790 | if (rs->starting_up || silent_p) |
5b6d1e4f | 2791 | thread = add_thread_silent (this, ptid); |
b7ea362b | 2792 | else |
5b6d1e4f | 2793 | thread = add_thread (this, ptid); |
1941c569 | 2794 | |
c9d22089 SM |
2795 | /* We start by assuming threads are resumed. That state then gets updated |
2796 | when we process a matching stop reply. */ | |
2797 | get_remote_thread_info (thread)->set_resumed (); | |
2798 | ||
5b6d1e4f PA |
2799 | set_executing (this, ptid, executing); |
2800 | set_running (this, ptid, running); | |
00431a78 PA |
2801 | |
2802 | return thread; | |
1941c569 PA |
2803 | } |
2804 | ||
2805 | /* Come here when we learn about a thread id from the remote target. | |
2806 | It may be the first time we hear about such thread, so take the | |
2807 | opportunity to add it to GDB's thread list. In case this is the | |
2808 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2809 | GDB's inferior list as well. EXECUTING indicates whether the |
2810 | thread is (internally) executing or stopped. */ | |
1941c569 | 2811 | |
6b8edb51 | 2812 | void |
8a82de58 | 2813 | remote_target::remote_notice_new_inferior (ptid_t currthread, bool executing) |
1941c569 | 2814 | { |
0d5b594f PA |
2815 | /* In non-stop mode, we assume new found threads are (externally) |
2816 | running until proven otherwise with a stop reply. In all-stop, | |
2817 | we can only get here if all threads are stopped. */ | |
8a82de58 | 2818 | bool running = target_is_non_stop_p (); |
0d5b594f | 2819 | |
c906108c SS |
2820 | /* If this is a new thread, add it to GDB's thread list. |
2821 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 | 2822 | |
9213a6d7 | 2823 | thread_info *tp = this->find_thread (currthread); |
00431a78 | 2824 | if (tp != NULL && tp->state == THREAD_EXITED) |
82f73884 PA |
2825 | { |
2826 | /* We're seeing an event on a thread id we knew had exited. | |
2827 | This has to be a new thread reusing the old id. Add it. */ | |
b622494e | 2828 | remote_add_thread (currthread, running, executing, false); |
82f73884 PA |
2829 | return; |
2830 | } | |
2831 | ||
5b6d1e4f | 2832 | if (!in_thread_list (this, currthread)) |
c0a2216e | 2833 | { |
1941c569 | 2834 | struct inferior *inf = NULL; |
e99b03dc | 2835 | int pid = currthread.pid (); |
1941c569 | 2836 | |
0e998d96 | 2837 | if (inferior_ptid.is_pid () |
e99b03dc | 2838 | && pid == inferior_ptid.pid ()) |
c0a2216e PA |
2839 | { |
2840 | /* inferior_ptid has no thread member yet. This can happen | |
2841 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2842 | stub doesn't support qC. This is the first stop reported | |
2843 | after an attach, so this is the main thread. Update the | |
2844 | ptid in the thread list. */ | |
5b6d1e4f PA |
2845 | if (in_thread_list (this, ptid_t (pid))) |
2846 | thread_change_ptid (this, inferior_ptid, currthread); | |
bad34192 PA |
2847 | else |
2848 | { | |
0ac55310 | 2849 | thread_info *thr |
b622494e | 2850 | = remote_add_thread (currthread, running, executing, false); |
0ac55310 | 2851 | switch_to_thread (thr); |
bad34192 | 2852 | } |
dc146f7c | 2853 | return; |
c0a2216e | 2854 | } |
82f73884 | 2855 | |
d7e15655 | 2856 | if (magic_null_ptid == inferior_ptid) |
c0a2216e PA |
2857 | { |
2858 | /* inferior_ptid is not set yet. This can happen with the | |
2859 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2860 | doesn't support qC. This is the first stop reported | |
2861 | after an attach, so this is the main thread. Update the | |
2862 | ptid in the thread list. */ | |
5b6d1e4f | 2863 | thread_change_ptid (this, inferior_ptid, currthread); |
82f73884 | 2864 | return; |
c0a2216e | 2865 | } |
82f73884 | 2866 | |
29c87f7f PA |
2867 | /* When connecting to a target remote, or to a target |
2868 | extended-remote which already was debugging an inferior, we | |
2869 | may not know about it yet. Add it before adding its child | |
2870 | thread, so notifications are emitted in a sensible order. */ | |
5b6d1e4f | 2871 | if (find_inferior_pid (this, currthread.pid ()) == NULL) |
49c62f2e | 2872 | { |
ff52c073 | 2873 | bool fake_pid_p = !m_features.remote_multi_process_p (); |
49c62f2e PA |
2874 | |
2875 | inf = remote_add_inferior (fake_pid_p, | |
e99b03dc | 2876 | currthread.pid (), -1, 1); |
49c62f2e | 2877 | } |
29c87f7f | 2878 | |
82f73884 | 2879 | /* This is really a new thread. Add it. */ |
00431a78 | 2880 | thread_info *new_thr |
b622494e | 2881 | = remote_add_thread (currthread, running, executing, false); |
1941c569 PA |
2882 | |
2883 | /* If we found a new inferior, let the common code do whatever | |
2884 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2885 | breakpoints), unless we're just setting up an all-stop |
2886 | connection. */ | |
1941c569 | 2887 | if (inf != NULL) |
b7ea362b PA |
2888 | { |
2889 | struct remote_state *rs = get_remote_state (); | |
2890 | ||
6efcd9a8 | 2891 | if (!rs->starting_up) |
00431a78 | 2892 | notice_new_inferior (new_thr, executing, 0); |
b7ea362b | 2893 | } |
c0a2216e | 2894 | } |
c906108c SS |
2895 | } |
2896 | ||
85ad3aaf | 2897 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2898 | |
7aabaf9d SM |
2899 | static remote_thread_info * |
2900 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2901 | { |
85ad3aaf | 2902 | gdb_assert (thread != NULL); |
dc146f7c | 2903 | |
85ad3aaf | 2904 | if (thread->priv == NULL) |
7aabaf9d | 2905 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2906 | |
98ed24fb | 2907 | return gdb::checked_static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2908 | } |
2909 | ||
5b6d1e4f PA |
2910 | /* Return PTID's private thread data, creating it if necessary. */ |
2911 | ||
7aabaf9d | 2912 | static remote_thread_info * |
5b6d1e4f | 2913 | get_remote_thread_info (remote_target *target, ptid_t ptid) |
85ad3aaf | 2914 | { |
9213a6d7 | 2915 | thread_info *thr = target->find_thread (ptid); |
00431a78 | 2916 | return get_remote_thread_info (thr); |
dc146f7c VP |
2917 | } |
2918 | ||
74531fed PA |
2919 | /* Call this function as a result of |
2920 | 1) A halt indication (T packet) containing a thread id | |
2921 | 2) A direct query of currthread | |
0df8b418 | 2922 | 3) Successful execution of set thread */ |
74531fed PA |
2923 | |
2924 | static void | |
47f8a51d | 2925 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2926 | { |
47f8a51d | 2927 | rs->general_thread = currthread; |
74531fed PA |
2928 | } |
2929 | ||
89be2091 DJ |
2930 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2931 | it can simply pass through to the inferior without reporting. */ | |
2932 | ||
f6ac5f3d | 2933 | void |
adc6a863 | 2934 | remote_target::pass_signals (gdb::array_view<const unsigned char> pass_signals) |
89be2091 | 2935 | { |
ff52c073 | 2936 | if (m_features.packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2937 | { |
2938 | char *pass_packet, *p; | |
adc6a863 | 2939 | int count = 0; |
747dc59d | 2940 | struct remote_state *rs = get_remote_state (); |
89be2091 | 2941 | |
adc6a863 PA |
2942 | gdb_assert (pass_signals.size () < 256); |
2943 | for (size_t i = 0; i < pass_signals.size (); i++) | |
89be2091 | 2944 | { |
2455069d | 2945 | if (pass_signals[i]) |
89be2091 DJ |
2946 | count++; |
2947 | } | |
224c3ddb | 2948 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2949 | strcpy (pass_packet, "QPassSignals:"); |
2950 | p = pass_packet + strlen (pass_packet); | |
adc6a863 | 2951 | for (size_t i = 0; i < pass_signals.size (); i++) |
89be2091 | 2952 | { |
2455069d | 2953 | if (pass_signals[i]) |
89be2091 DJ |
2954 | { |
2955 | if (i >= 16) | |
2956 | *p++ = tohex (i >> 4); | |
2957 | *p++ = tohex (i & 15); | |
2958 | if (count) | |
2959 | *p++ = ';'; | |
2960 | else | |
2961 | break; | |
2962 | count--; | |
2963 | } | |
2964 | } | |
2965 | *p = 0; | |
747dc59d | 2966 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2967 | { |
89be2091 | 2968 | putpkt (pass_packet); |
aa7b36b8 | 2969 | getpkt (&rs->buf); |
ff52c073 | 2970 | m_features.packet_ok (rs->buf, PACKET_QPassSignals); |
84d53fa9 | 2971 | xfree (rs->last_pass_packet); |
747dc59d | 2972 | rs->last_pass_packet = pass_packet; |
89be2091 DJ |
2973 | } |
2974 | else | |
2975 | xfree (pass_packet); | |
2976 | } | |
2977 | } | |
2978 | ||
82075af2 JS |
2979 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2980 | to report syscalls to GDB. */ | |
2981 | ||
f6ac5f3d PA |
2982 | int |
2983 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2984 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2985 | { |
b80406ac | 2986 | const char *catch_packet; |
82075af2 JS |
2987 | enum packet_result result; |
2988 | int n_sysno = 0; | |
2989 | ||
ff52c073 | 2990 | if (m_features.packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) |
82075af2 JS |
2991 | { |
2992 | /* Not supported. */ | |
2993 | return 1; | |
2994 | } | |
2995 | ||
649a140c | 2996 | if (needed && any_count == 0) |
82075af2 | 2997 | { |
649a140c PA |
2998 | /* Count how many syscalls are to be caught. */ |
2999 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 3000 | { |
649a140c | 3001 | if (syscall_counts[i] != 0) |
82075af2 JS |
3002 | n_sysno++; |
3003 | } | |
3004 | } | |
3005 | ||
2189c312 SM |
3006 | remote_debug_printf ("pid %d needed %d any_count %d n_sysno %d", |
3007 | pid, needed, any_count, n_sysno); | |
82075af2 | 3008 | |
1b81856f | 3009 | std::string built_packet; |
82075af2 JS |
3010 | if (needed) |
3011 | { | |
3012 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
3013 | characters for a sysno. If the resulting packet size is too | |
3014 | big, fallback on the non-selective packet. */ | |
3015 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
3016 | built_packet.reserve (maxpktsz); |
3017 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 3018 | if (any_count == 0) |
82075af2 | 3019 | { |
649a140c PA |
3020 | /* Add in each syscall to be caught. */ |
3021 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 3022 | { |
649a140c PA |
3023 | if (syscall_counts[i] != 0) |
3024 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
3025 | } |
3026 | } | |
1b81856f | 3027 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
3028 | { |
3029 | /* catch_packet too big. Fallback to less efficient | |
3030 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 3031 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 3032 | } |
b80406ac | 3033 | else |
1b81856f | 3034 | catch_packet = built_packet.c_str (); |
82075af2 JS |
3035 | } |
3036 | else | |
b80406ac | 3037 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 3038 | |
b80406ac | 3039 | struct remote_state *rs = get_remote_state (); |
82075af2 | 3040 | |
b80406ac | 3041 | putpkt (catch_packet); |
aa7b36b8 | 3042 | getpkt (&rs->buf); |
ff52c073 | 3043 | result = m_features.packet_ok (rs->buf, PACKET_QCatchSyscalls); |
b80406ac TT |
3044 | if (result == PACKET_OK) |
3045 | return 0; | |
3046 | else | |
3047 | return -1; | |
82075af2 JS |
3048 | } |
3049 | ||
9b224c5e PA |
3050 | /* If 'QProgramSignals' is supported, tell the remote stub what |
3051 | signals it should pass through to the inferior when detaching. */ | |
3052 | ||
f6ac5f3d | 3053 | void |
adc6a863 | 3054 | remote_target::program_signals (gdb::array_view<const unsigned char> signals) |
9b224c5e | 3055 | { |
ff52c073 | 3056 | if (m_features.packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
3057 | { |
3058 | char *packet, *p; | |
adc6a863 | 3059 | int count = 0; |
5e4a05c4 | 3060 | struct remote_state *rs = get_remote_state (); |
9b224c5e | 3061 | |
adc6a863 PA |
3062 | gdb_assert (signals.size () < 256); |
3063 | for (size_t i = 0; i < signals.size (); i++) | |
9b224c5e PA |
3064 | { |
3065 | if (signals[i]) | |
3066 | count++; | |
3067 | } | |
224c3ddb | 3068 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
3069 | strcpy (packet, "QProgramSignals:"); |
3070 | p = packet + strlen (packet); | |
adc6a863 | 3071 | for (size_t i = 0; i < signals.size (); i++) |
9b224c5e PA |
3072 | { |
3073 | if (signal_pass_state (i)) | |
3074 | { | |
3075 | if (i >= 16) | |
3076 | *p++ = tohex (i >> 4); | |
3077 | *p++ = tohex (i & 15); | |
3078 | if (count) | |
3079 | *p++ = ';'; | |
3080 | else | |
3081 | break; | |
3082 | count--; | |
3083 | } | |
3084 | } | |
3085 | *p = 0; | |
5e4a05c4 TT |
3086 | if (!rs->last_program_signals_packet |
3087 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 3088 | { |
9b224c5e | 3089 | putpkt (packet); |
aa7b36b8 | 3090 | getpkt (&rs->buf); |
ff52c073 | 3091 | m_features.packet_ok (rs->buf, PACKET_QProgramSignals); |
5e4a05c4 TT |
3092 | xfree (rs->last_program_signals_packet); |
3093 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
3094 | } |
3095 | else | |
3096 | xfree (packet); | |
3097 | } | |
3098 | } | |
3099 | ||
79d7f229 PA |
3100 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
3101 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
3102 | thread. If GEN is set, set the general thread, if not, then set | |
3103 | the step/continue thread. */ | |
6b8edb51 PA |
3104 | void |
3105 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 3106 | { |
d01949b6 | 3107 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 3108 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
8d64371b TT |
3109 | char *buf = rs->buf.data (); |
3110 | char *endbuf = buf + get_remote_packet_size (); | |
c906108c | 3111 | |
d7e15655 | 3112 | if (state == ptid) |
c906108c SS |
3113 | return; |
3114 | ||
79d7f229 PA |
3115 | *buf++ = 'H'; |
3116 | *buf++ = gen ? 'g' : 'c'; | |
d7e15655 | 3117 | if (ptid == magic_null_ptid) |
79d7f229 | 3118 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 3119 | else if (ptid == any_thread_ptid) |
79d7f229 | 3120 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 3121 | else if (ptid == minus_one_ptid) |
79d7f229 PA |
3122 | xsnprintf (buf, endbuf - buf, "-1"); |
3123 | else | |
82f73884 | 3124 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 3125 | putpkt (rs->buf); |
aa7b36b8 | 3126 | getpkt (&rs->buf); |
c906108c | 3127 | if (gen) |
47f8a51d | 3128 | rs->general_thread = ptid; |
c906108c | 3129 | else |
47f8a51d | 3130 | rs->continue_thread = ptid; |
c906108c | 3131 | } |
79d7f229 | 3132 | |
6b8edb51 PA |
3133 | void |
3134 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
3135 | { |
3136 | set_thread (ptid, 1); | |
3137 | } | |
3138 | ||
6b8edb51 PA |
3139 | void |
3140 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
3141 | { |
3142 | set_thread (ptid, 0); | |
3143 | } | |
3144 | ||
3c9c4b83 PA |
3145 | /* Change the remote current process. Which thread within the process |
3146 | ends up selected isn't important, as long as it is the same process | |
3147 | as what INFERIOR_PTID points to. | |
3148 | ||
3149 | This comes from that fact that there is no explicit notion of | |
3150 | "selected process" in the protocol. The selected process for | |
3151 | general operations is the process the selected general thread | |
3152 | belongs to. */ | |
3153 | ||
6b8edb51 PA |
3154 | void |
3155 | remote_target::set_general_process () | |
3c9c4b83 | 3156 | { |
3c9c4b83 | 3157 | /* If the remote can't handle multiple processes, don't bother. */ |
ff52c073 | 3158 | if (!m_features.remote_multi_process_p ()) |
3c9c4b83 PA |
3159 | return; |
3160 | ||
ff52c073 CS |
3161 | remote_state *rs = get_remote_state (); |
3162 | ||
3c9c4b83 PA |
3163 | /* We only need to change the remote current thread if it's pointing |
3164 | at some other process. */ | |
e99b03dc | 3165 | if (rs->general_thread.pid () != inferior_ptid.pid ()) |
3c9c4b83 PA |
3166 | set_general_thread (inferior_ptid); |
3167 | } | |
3168 | ||
c906108c | 3169 | \f |
7d1a114c PA |
3170 | /* Return nonzero if this is the main thread that we made up ourselves |
3171 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
3172 | |
3173 | static int | |
f6ac5f3d | 3174 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 3175 | { |
d7e15655 | 3176 | if (ptid == magic_null_ptid) |
c0a2216e PA |
3177 | /* The main thread is always alive. */ |
3178 | return 1; | |
3179 | ||
e38504b3 | 3180 | if (ptid.pid () != 0 && ptid.lwp () == 0) |
c0a2216e PA |
3181 | /* The main thread is always alive. This can happen after a |
3182 | vAttach, if the remote side doesn't support | |
3183 | multi-threading. */ | |
3184 | return 1; | |
3185 | ||
7d1a114c PA |
3186 | return 0; |
3187 | } | |
3188 | ||
3189 | /* Return nonzero if the thread PTID is still alive on the remote | |
3190 | system. */ | |
3191 | ||
57810aa7 | 3192 | bool |
f6ac5f3d | 3193 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
3194 | { |
3195 | struct remote_state *rs = get_remote_state (); | |
3196 | char *p, *endp; | |
3197 | ||
3198 | /* Check if this is a thread that we made up ourselves to model | |
3199 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 3200 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
3201 | return 1; |
3202 | ||
8d64371b TT |
3203 | p = rs->buf.data (); |
3204 | endp = p + get_remote_packet_size (); | |
82f73884 PA |
3205 | |
3206 | *p++ = 'T'; | |
3207 | write_ptid (p, endp, ptid); | |
3208 | ||
2e9f7625 | 3209 | putpkt (rs->buf); |
aa7b36b8 | 3210 | getpkt (&rs->buf); |
2e9f7625 | 3211 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
3212 | } |
3213 | ||
79efa585 SM |
3214 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
3215 | The thread_info object owns the memory for the name. */ | |
3216 | ||
f6ac5f3d PA |
3217 | const char * |
3218 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
3219 | { |
3220 | if (info->priv != NULL) | |
a9334058 SM |
3221 | { |
3222 | const std::string &name = get_remote_thread_info (info)->name; | |
3223 | return !name.empty () ? name.c_str () : NULL; | |
3224 | } | |
79efa585 SM |
3225 | |
3226 | return NULL; | |
3227 | } | |
3228 | ||
c906108c SS |
3229 | /* About these extended threadlist and threadinfo packets. They are |
3230 | variable length packets but, the fields within them are often fixed | |
30baf67b | 3231 | length. They are redundant enough to send over UDP as is the |
c906108c SS |
3232 | remote protocol in general. There is a matching unit test module |
3233 | in libstub. */ | |
3234 | ||
23860348 | 3235 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 3236 | libstub protocol encoding, and remote.c. It is not particularly |
33b5899f | 3237 | changeable. */ |
cce74817 JM |
3238 | |
3239 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 3240 | Plan to fix this. */ |
cce74817 | 3241 | |
23860348 | 3242 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 3243 | |
9d1f7ab2 | 3244 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 3245 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
3246 | |
3247 | struct gdb_ext_thread_info | |
c5aa993b | 3248 | { |
23860348 | 3249 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 3250 | int active; /* Has state interesting to GDB? |
23860348 | 3251 | regs, stack. */ |
2bc416ba | 3252 | char display[256]; /* Brief state display, name, |
cedea757 | 3253 | blocked/suspended. */ |
23860348 | 3254 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 3255 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 3256 | whatever. */ |
c5aa993b | 3257 | }; |
cce74817 JM |
3258 | |
3259 | /* The volume of remote transfers can be limited by submitting | |
3260 | a mask containing bits specifying the desired information. | |
3261 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 3262 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
3263 | |
3264 | #define TAG_THREADID 1 | |
3265 | #define TAG_EXISTS 2 | |
3266 | #define TAG_DISPLAY 4 | |
3267 | #define TAG_THREADNAME 8 | |
c5aa993b | 3268 | #define TAG_MOREDISPLAY 16 |
cce74817 | 3269 | |
23860348 | 3270 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 3271 | |
cecb1912 | 3272 | static const char *unpack_nibble (const char *buf, int *val); |
cce74817 | 3273 | |
cecb1912 | 3274 | static const char *unpack_byte (const char *buf, int *value); |
cce74817 | 3275 | |
a14ed312 | 3276 | static char *pack_int (char *buf, int value); |
cce74817 | 3277 | |
cecb1912 | 3278 | static const char *unpack_int (const char *buf, int *value); |
cce74817 | 3279 | |
cecb1912 | 3280 | static const char *unpack_string (const char *src, char *dest, int length); |
cce74817 | 3281 | |
23860348 | 3282 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 3283 | |
cecb1912 | 3284 | static const char *unpack_threadid (const char *inbuf, threadref *id); |
cce74817 | 3285 | |
23860348 | 3286 | void int_to_threadref (threadref *id, int value); |
cce74817 | 3287 | |
23860348 | 3288 | static int threadref_to_int (threadref *ref); |
cce74817 | 3289 | |
23860348 | 3290 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 3291 | |
23860348 | 3292 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 3293 | |
2bc416ba | 3294 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 3295 | threadref *id); |
cce74817 | 3296 | |
a14ed312 KB |
3297 | static char *pack_threadlist_request (char *pkt, int startflag, |
3298 | int threadcount, | |
23860348 | 3299 | threadref *nextthread); |
cce74817 | 3300 | |
23860348 | 3301 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 3302 | |
82f73884 PA |
3303 | |
3304 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
3305 | buffer we're allowed to write to. Returns | |
3306 | BUF+CHARACTERS_WRITTEN. */ | |
3307 | ||
6b8edb51 PA |
3308 | char * |
3309 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
3310 | { |
3311 | int pid, tid; | |
82f73884 | 3312 | |
ff52c073 | 3313 | if (m_features.remote_multi_process_p ()) |
82f73884 | 3314 | { |
e99b03dc | 3315 | pid = ptid.pid (); |
82f73884 PA |
3316 | if (pid < 0) |
3317 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
3318 | else | |
3319 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
3320 | } | |
e38504b3 | 3321 | tid = ptid.lwp (); |
82f73884 PA |
3322 | if (tid < 0) |
3323 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
3324 | else | |
3325 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
3326 | ||
3327 | return buf; | |
3328 | } | |
3329 | ||
256642e8 PA |
3330 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
3331 | last parsed char. Returns null_ptid if no thread id is found, and | |
3332 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
3333 | |
3334 | static ptid_t | |
256642e8 | 3335 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 3336 | { |
256642e8 PA |
3337 | const char *p = buf; |
3338 | const char *pp; | |
82f73884 | 3339 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
3340 | |
3341 | if (*p == 'p') | |
3342 | { | |
3343 | /* Multi-process ptid. */ | |
3344 | pp = unpack_varlen_hex (p + 1, &pid); | |
3345 | if (*pp != '.') | |
b37520b6 | 3346 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
3347 | |
3348 | p = pp; | |
3349 | pp = unpack_varlen_hex (p + 1, &tid); | |
3350 | if (obuf) | |
3351 | *obuf = pp; | |
184ea2f7 | 3352 | return ptid_t (pid, tid); |
82f73884 PA |
3353 | } |
3354 | ||
3355 | /* No multi-process. Just a tid. */ | |
3356 | pp = unpack_varlen_hex (p, &tid); | |
3357 | ||
c9f35b34 KB |
3358 | /* Return null_ptid when no thread id is found. */ |
3359 | if (p == pp) | |
3360 | { | |
3361 | if (obuf) | |
3362 | *obuf = pp; | |
3363 | return null_ptid; | |
3364 | } | |
3365 | ||
2f761de2 TBA |
3366 | /* Since the stub is not sending a process id, default to what's |
3367 | current_inferior, unless it doesn't have a PID yet. If so, | |
ca19bf23 PA |
3368 | then since there's no way to know the pid of the reported |
3369 | threads, use the magic number. */ | |
2f761de2 TBA |
3370 | inferior *inf = current_inferior (); |
3371 | if (inf->pid == 0) | |
e99b03dc | 3372 | pid = magic_null_ptid.pid (); |
ca19bf23 | 3373 | else |
2f761de2 | 3374 | pid = inf->pid; |
82f73884 PA |
3375 | |
3376 | if (obuf) | |
3377 | *obuf = pp; | |
184ea2f7 | 3378 | return ptid_t (pid, tid); |
82f73884 PA |
3379 | } |
3380 | ||
c906108c | 3381 | static int |
fba45db2 | 3382 | stubhex (int ch) |
c906108c SS |
3383 | { |
3384 | if (ch >= 'a' && ch <= 'f') | |
3385 | return ch - 'a' + 10; | |
3386 | if (ch >= '0' && ch <= '9') | |
3387 | return ch - '0'; | |
3388 | if (ch >= 'A' && ch <= 'F') | |
3389 | return ch - 'A' + 10; | |
3390 | return -1; | |
3391 | } | |
3392 | ||
3393 | static int | |
cecb1912 | 3394 | stub_unpack_int (const char *buff, int fieldlength) |
c906108c SS |
3395 | { |
3396 | int nibble; | |
3397 | int retval = 0; | |
3398 | ||
3399 | while (fieldlength) | |
3400 | { | |
3401 | nibble = stubhex (*buff++); | |
3402 | retval |= nibble; | |
3403 | fieldlength--; | |
3404 | if (fieldlength) | |
3405 | retval = retval << 4; | |
3406 | } | |
3407 | return retval; | |
3408 | } | |
3409 | ||
cecb1912 SM |
3410 | static const char * |
3411 | unpack_nibble (const char *buf, int *val) | |
c906108c | 3412 | { |
b7589f7d | 3413 | *val = fromhex (*buf++); |
c906108c SS |
3414 | return buf; |
3415 | } | |
3416 | ||
cecb1912 SM |
3417 | static const char * |
3418 | unpack_byte (const char *buf, int *value) | |
c906108c SS |
3419 | { |
3420 | *value = stub_unpack_int (buf, 2); | |
3421 | return buf + 2; | |
3422 | } | |
3423 | ||
3424 | static char * | |
fba45db2 | 3425 | pack_int (char *buf, int value) |
c906108c SS |
3426 | { |
3427 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3428 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3429 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3430 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3431 | return buf; | |
3432 | } | |
3433 | ||
cecb1912 SM |
3434 | static const char * |
3435 | unpack_int (const char *buf, int *value) | |
c906108c SS |
3436 | { |
3437 | *value = stub_unpack_int (buf, 8); | |
3438 | return buf + 8; | |
3439 | } | |
3440 | ||
23860348 | 3441 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3442 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3443 | |
3444 | static char * | |
fba45db2 | 3445 | pack_string (char *pkt, char *string) |
c906108c SS |
3446 | { |
3447 | char ch; | |
3448 | int len; | |
3449 | ||
3450 | len = strlen (string); | |
3451 | if (len > 200) | |
23860348 | 3452 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3453 | pkt = pack_hex_byte (pkt, len); |
3454 | while (len-- > 0) | |
3455 | { | |
3456 | ch = *string++; | |
3457 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3458 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3459 | *pkt++ = ch; |
3460 | } | |
3461 | return pkt; | |
3462 | } | |
3463 | #endif /* 0 (unused) */ | |
3464 | ||
cecb1912 SM |
3465 | static const char * |
3466 | unpack_string (const char *src, char *dest, int length) | |
c906108c SS |
3467 | { |
3468 | while (length--) | |
3469 | *dest++ = *src++; | |
3470 | *dest = '\0'; | |
3471 | return src; | |
3472 | } | |
3473 | ||
3474 | static char * | |
fba45db2 | 3475 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3476 | { |
3477 | char *limit; | |
3478 | unsigned char *altid; | |
3479 | ||
3480 | altid = (unsigned char *) id; | |
3481 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3482 | while (pkt < limit) | |
3483 | pkt = pack_hex_byte (pkt, *altid++); | |
3484 | return pkt; | |
3485 | } | |
3486 | ||
3487 | ||
cecb1912 SM |
3488 | static const char * |
3489 | unpack_threadid (const char *inbuf, threadref *id) | |
c906108c SS |
3490 | { |
3491 | char *altref; | |
cecb1912 | 3492 | const char *limit = inbuf + BUF_THREAD_ID_SIZE; |
c906108c SS |
3493 | int x, y; |
3494 | ||
3495 | altref = (char *) id; | |
3496 | ||
3497 | while (inbuf < limit) | |
3498 | { | |
3499 | x = stubhex (*inbuf++); | |
3500 | y = stubhex (*inbuf++); | |
3501 | *altref++ = (x << 4) | y; | |
3502 | } | |
3503 | return inbuf; | |
3504 | } | |
3505 | ||
3506 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3507 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3508 | to use 64bit thread references internally. This is an adapter |
3509 | function. */ | |
3510 | ||
3511 | void | |
fba45db2 | 3512 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3513 | { |
3514 | unsigned char *scan; | |
3515 | ||
3516 | scan = (unsigned char *) id; | |
3517 | { | |
3518 | int i = 4; | |
3519 | while (i--) | |
3520 | *scan++ = 0; | |
3521 | } | |
3522 | *scan++ = (value >> 24) & 0xff; | |
3523 | *scan++ = (value >> 16) & 0xff; | |
3524 | *scan++ = (value >> 8) & 0xff; | |
3525 | *scan++ = (value & 0xff); | |
3526 | } | |
3527 | ||
3528 | static int | |
fba45db2 | 3529 | threadref_to_int (threadref *ref) |
c906108c SS |
3530 | { |
3531 | int i, value = 0; | |
3532 | unsigned char *scan; | |
3533 | ||
cfd77fa1 | 3534 | scan = *ref; |
c906108c SS |
3535 | scan += 4; |
3536 | i = 4; | |
3537 | while (i-- > 0) | |
3538 | value = (value << 8) | ((*scan++) & 0xff); | |
3539 | return value; | |
3540 | } | |
3541 | ||
3542 | static void | |
fba45db2 | 3543 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3544 | { |
3545 | int i; | |
3546 | unsigned char *csrc, *cdest; | |
3547 | ||
3548 | csrc = (unsigned char *) src; | |
3549 | cdest = (unsigned char *) dest; | |
3550 | i = 8; | |
3551 | while (i--) | |
3552 | *cdest++ = *csrc++; | |
3553 | } | |
3554 | ||
3555 | static int | |
fba45db2 | 3556 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3557 | { |
23860348 | 3558 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3559 | #if 0 |
3560 | unsigned char *srcp, *destp; | |
3561 | int i, result; | |
3562 | srcp = (char *) src; | |
3563 | destp = (char *) dest; | |
3564 | ||
3565 | result = 1; | |
3566 | while (i-- > 0) | |
3567 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3568 | return result; | |
3569 | #endif | |
3570 | return 1; | |
3571 | } | |
3572 | ||
3573 | /* | |
c5aa993b JM |
3574 | threadid:1, # always request threadid |
3575 | context_exists:2, | |
3576 | display:4, | |
3577 | unique_name:8, | |
3578 | more_display:16 | |
3579 | */ | |
c906108c SS |
3580 | |
3581 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3582 | ||
3583 | static char * | |
fba45db2 | 3584 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3585 | { |
23860348 MS |
3586 | *pkt++ = 'q'; /* Info Query */ |
3587 | *pkt++ = 'P'; /* process or thread info */ | |
3588 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3589 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3590 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3591 | return pkt; |
3592 | } | |
3593 | ||
23860348 | 3594 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3595 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3596 | add more fields as time goes by. */ |
c906108c | 3597 | |
23860348 | 3598 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3599 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3600 | fetch registers and its stack? */ |
c5aa993b | 3601 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3602 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3603 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3604 | the process. */ |
c906108c | 3605 | |
6b8edb51 | 3606 | int |
cecb1912 | 3607 | remote_target::remote_unpack_thread_info_response (const char *pkt, |
6b8edb51 PA |
3608 | threadref *expectedref, |
3609 | gdb_ext_thread_info *info) | |
c906108c | 3610 | { |
d01949b6 | 3611 | struct remote_state *rs = get_remote_state (); |
c906108c | 3612 | int mask, length; |
cfd77fa1 | 3613 | int tag; |
c906108c | 3614 | threadref ref; |
cecb1912 | 3615 | const char *limit = pkt + rs->buf.size (); /* Plausible parsing limit. */ |
c906108c SS |
3616 | int retval = 1; |
3617 | ||
23860348 | 3618 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3619 | info->active = 0; |
3620 | info->display[0] = '\0'; | |
3621 | info->shortname[0] = '\0'; | |
3622 | info->more_display[0] = '\0'; | |
3623 | ||
23860348 MS |
3624 | /* Assume the characters indicating the packet type have been |
3625 | stripped. */ | |
c906108c SS |
3626 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3627 | pkt = unpack_threadid (pkt, &ref); | |
3628 | ||
3629 | if (mask == 0) | |
8a3fe4f8 | 3630 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3631 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3632 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3633 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3634 | return 0; |
3635 | } | |
3636 | copy_threadref (&info->threadid, &ref); | |
3637 | ||
405feb71 | 3638 | /* Loop on tagged fields , try to bail if something goes wrong. */ |
c906108c | 3639 | |
23860348 MS |
3640 | /* Packets are terminated with nulls. */ |
3641 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3642 | { |
3643 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3644 | pkt = unpack_byte (pkt, &length); /* length */ |
3645 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3646 | { |
8a3fe4f8 | 3647 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3648 | retval = 0; |
3649 | break; | |
3650 | } | |
3651 | if (tag == TAG_THREADID) | |
3652 | { | |
3653 | if (length != 16) | |
3654 | { | |
8a3fe4f8 | 3655 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3656 | retval = 0; |
3657 | break; | |
3658 | } | |
3659 | pkt = unpack_threadid (pkt, &ref); | |
3660 | mask = mask & ~TAG_THREADID; | |
3661 | continue; | |
3662 | } | |
3663 | if (tag == TAG_EXISTS) | |
3664 | { | |
3665 | info->active = stub_unpack_int (pkt, length); | |
3666 | pkt += length; | |
3667 | mask = mask & ~(TAG_EXISTS); | |
3668 | if (length > 8) | |
3669 | { | |
8a3fe4f8 | 3670 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3671 | retval = 0; |
3672 | break; | |
3673 | } | |
3674 | continue; | |
3675 | } | |
3676 | if (tag == TAG_THREADNAME) | |
3677 | { | |
3678 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3679 | mask = mask & ~TAG_THREADNAME; | |
3680 | continue; | |
3681 | } | |
3682 | if (tag == TAG_DISPLAY) | |
3683 | { | |
3684 | pkt = unpack_string (pkt, &info->display[0], length); | |
3685 | mask = mask & ~TAG_DISPLAY; | |
3686 | continue; | |
3687 | } | |
3688 | if (tag == TAG_MOREDISPLAY) | |
3689 | { | |
3690 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3691 | mask = mask & ~TAG_MOREDISPLAY; | |
3692 | continue; | |
3693 | } | |
8a3fe4f8 | 3694 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3695 | break; /* Not a tag we know about. */ |
c906108c SS |
3696 | } |
3697 | return retval; | |
3698 | } | |
3699 | ||
6b8edb51 PA |
3700 | int |
3701 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3702 | int fieldset, | |
3703 | gdb_ext_thread_info *info) | |
c906108c | 3704 | { |
d01949b6 | 3705 | struct remote_state *rs = get_remote_state (); |
c906108c | 3706 | int result; |
c906108c | 3707 | |
8d64371b | 3708 | pack_threadinfo_request (rs->buf.data (), fieldset, threadid); |
2e9f7625 | 3709 | putpkt (rs->buf); |
aa7b36b8 | 3710 | getpkt (&rs->buf); |
3084dd77 PA |
3711 | |
3712 | if (rs->buf[0] == '\0') | |
3713 | return 0; | |
3714 | ||
8d64371b | 3715 | result = remote_unpack_thread_info_response (&rs->buf[2], |
23860348 | 3716 | threadid, info); |
c906108c SS |
3717 | return result; |
3718 | } | |
3719 | ||
c906108c SS |
3720 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3721 | ||
3722 | static char * | |
fba45db2 KB |
3723 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3724 | threadref *nextthread) | |
c906108c SS |
3725 | { |
3726 | *pkt++ = 'q'; /* info query packet */ | |
3727 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3728 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3729 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3730 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3731 | *pkt = '\0'; | |
3732 | return pkt; | |
3733 | } | |
3734 | ||
3735 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3736 | ||
6b8edb51 | 3737 | int |
cecb1912 | 3738 | remote_target::parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
3739 | threadref *original_echo, |
3740 | threadref *resultlist, | |
3741 | int *doneflag) | |
c906108c | 3742 | { |
d01949b6 | 3743 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3744 | int count, resultcount, done; |
3745 | ||
3746 | resultcount = 0; | |
3747 | /* Assume the 'q' and 'M chars have been stripped. */ | |
cecb1912 | 3748 | const char *limit = pkt + (rs->buf.size () - BUF_THREAD_ID_SIZE); |
23860348 | 3749 | /* done parse past here */ |
c906108c SS |
3750 | pkt = unpack_byte (pkt, &count); /* count field */ |
3751 | pkt = unpack_nibble (pkt, &done); | |
3752 | /* The first threadid is the argument threadid. */ | |
3753 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3754 | while ((count-- > 0) && (pkt < limit)) | |
3755 | { | |
3756 | pkt = unpack_threadid (pkt, resultlist++); | |
3757 | if (resultcount++ >= result_limit) | |
3758 | break; | |
3759 | } | |
3760 | if (doneflag) | |
3761 | *doneflag = done; | |
3762 | return resultcount; | |
3763 | } | |
3764 | ||
6dc54d91 PA |
3765 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3766 | qL packet is not supported, 0 on error and 1 on success. */ | |
3767 | ||
6b8edb51 PA |
3768 | int |
3769 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3770 | int result_limit, int *done, int *result_count, | |
3771 | threadref *threadlist) | |
c906108c | 3772 | { |
d01949b6 | 3773 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3774 | int result = 1; |
3775 | ||
405feb71 | 3776 | /* Truncate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3777 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3778 | >= get_remote_packet_size ()) | |
ea9c271d | 3779 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3780 | |
8d64371b TT |
3781 | pack_threadlist_request (rs->buf.data (), startflag, result_limit, |
3782 | nextthread); | |
6d820c5c | 3783 | putpkt (rs->buf); |
aa7b36b8 | 3784 | getpkt (&rs->buf); |
8d64371b | 3785 | if (rs->buf[0] == '\0') |
6dc54d91 PA |
3786 | { |
3787 | /* Packet not supported. */ | |
3788 | return -1; | |
3789 | } | |
3790 | ||
3791 | *result_count = | |
8d64371b | 3792 | parse_threadlist_response (&rs->buf[2], result_limit, |
6dc54d91 | 3793 | &rs->echo_nextthread, threadlist, done); |
c906108c | 3794 | |
0d031856 | 3795 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3796 | { |
23860348 | 3797 | /* FIXME: This is a good reason to drop the packet. */ |
405feb71 TV |
3798 | /* Possibly, there is a duplicate response. */ |
3799 | /* Possibilities : | |
dda83cd7 SM |
3800 | retransmit immediatly - race conditions |
3801 | retransmit after timeout - yes | |
3802 | exit | |
3803 | wait for packet, then exit | |
c906108c | 3804 | */ |
8a3fe4f8 | 3805 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3806 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3807 | } |
3808 | if (*result_count <= 0) | |
3809 | { | |
3810 | if (*done != 1) | |
3811 | { | |
8a3fe4f8 | 3812 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3813 | result = 0; |
3814 | } | |
3815 | return result; /* break; */ | |
3816 | } | |
3817 | if (*result_count > result_limit) | |
3818 | { | |
3819 | *result_count = 0; | |
8a3fe4f8 | 3820 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3821 | return 0; |
3822 | } | |
3823 | return result; | |
3824 | } | |
3825 | ||
6dc54d91 PA |
3826 | /* Fetch the list of remote threads, with the qL packet, and call |
3827 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3828 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3829 | STEPFUNCTION returns false. If the packet is not supported, | |
3830 | returns -1. */ | |
c906108c | 3831 | |
6b8edb51 PA |
3832 | int |
3833 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3834 | void *context, int looplimit) | |
c906108c | 3835 | { |
0d031856 | 3836 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3837 | int done, i, result_count; |
3838 | int startflag = 1; | |
3839 | int result = 1; | |
3840 | int loopcount = 0; | |
c906108c SS |
3841 | |
3842 | done = 0; | |
3843 | while (!done) | |
3844 | { | |
3845 | if (loopcount++ > looplimit) | |
3846 | { | |
3847 | result = 0; | |
8a3fe4f8 | 3848 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3849 | break; |
3850 | } | |
6dc54d91 PA |
3851 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3852 | MAXTHREADLISTRESULTS, | |
3853 | &done, &result_count, | |
3854 | rs->resultthreadlist); | |
3855 | if (result <= 0) | |
3856 | break; | |
23860348 | 3857 | /* Clear for later iterations. */ |
c906108c SS |
3858 | startflag = 0; |
3859 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3860 | if (result_count >= 1) | |
0d031856 TT |
3861 | copy_threadref (&rs->nextthread, |
3862 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3863 | i = 0; |
3864 | while (result_count--) | |
6dc54d91 PA |
3865 | { |
3866 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3867 | { | |
3868 | result = 0; | |
3869 | break; | |
3870 | } | |
3871 | } | |
c906108c SS |
3872 | } |
3873 | return result; | |
3874 | } | |
3875 | ||
6dc54d91 PA |
3876 | /* A thread found on the remote target. */ |
3877 | ||
21fe1c75 | 3878 | struct thread_item |
6dc54d91 | 3879 | { |
21fe1c75 SM |
3880 | explicit thread_item (ptid_t ptid_) |
3881 | : ptid (ptid_) | |
3882 | {} | |
3883 | ||
3884 | thread_item (thread_item &&other) = default; | |
3885 | thread_item &operator= (thread_item &&other) = default; | |
3886 | ||
3887 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3888 | ||
6dc54d91 PA |
3889 | /* The thread's PTID. */ |
3890 | ptid_t ptid; | |
3891 | ||
21fe1c75 SM |
3892 | /* The thread's extra info. */ |
3893 | std::string extra; | |
6dc54d91 | 3894 | |
21fe1c75 SM |
3895 | /* The thread's name. */ |
3896 | std::string name; | |
79efa585 | 3897 | |
6dc54d91 | 3898 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3899 | int core = -1; |
f6327dcb KB |
3900 | |
3901 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3902 | gdb::byte_vector thread_handle; |
21fe1c75 | 3903 | }; |
6dc54d91 PA |
3904 | |
3905 | /* Context passed around to the various methods listing remote | |
3906 | threads. As new threads are found, they're added to the ITEMS | |
3907 | vector. */ | |
3908 | ||
3909 | struct threads_listing_context | |
3910 | { | |
21fe1c75 SM |
3911 | /* Return true if this object contains an entry for a thread with ptid |
3912 | PTID. */ | |
6dc54d91 | 3913 | |
21fe1c75 SM |
3914 | bool contains_thread (ptid_t ptid) const |
3915 | { | |
3916 | auto match_ptid = [&] (const thread_item &item) | |
3917 | { | |
3918 | return item.ptid == ptid; | |
3919 | }; | |
80134cf5 | 3920 | |
21fe1c75 SM |
3921 | auto it = std::find_if (this->items.begin (), |
3922 | this->items.end (), | |
3923 | match_ptid); | |
80134cf5 | 3924 | |
21fe1c75 SM |
3925 | return it != this->items.end (); |
3926 | } | |
80134cf5 | 3927 | |
21fe1c75 | 3928 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3929 | |
21fe1c75 SM |
3930 | void remove_thread (ptid_t ptid) |
3931 | { | |
3932 | auto match_ptid = [&] (const thread_item &item) | |
3933 | { | |
dda83cd7 | 3934 | return item.ptid == ptid; |
21fe1c75 | 3935 | }; |
cbb8991c | 3936 | |
21fe1c75 SM |
3937 | auto it = std::remove_if (this->items.begin (), |
3938 | this->items.end (), | |
3939 | match_ptid); | |
cbb8991c | 3940 | |
21fe1c75 SM |
3941 | if (it != this->items.end ()) |
3942 | this->items.erase (it); | |
3943 | } | |
3944 | ||
3945 | /* The threads found on the remote target. */ | |
3946 | std::vector<thread_item> items; | |
3947 | }; | |
cbb8991c | 3948 | |
c906108c | 3949 | static int |
6dc54d91 | 3950 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3951 | { |
19ba03f4 SM |
3952 | struct threads_listing_context *context |
3953 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3954 | int pid = inferior_ptid.pid (); |
3955 | int lwp = threadref_to_int (ref); | |
3956 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3957 | |
21fe1c75 | 3958 | context->items.emplace_back (ptid); |
6dc54d91 | 3959 | |
c906108c SS |
3960 | return 1; /* continue iterator */ |
3961 | } | |
3962 | ||
3963 | #define CRAZY_MAX_THREADS 1000 | |
3964 | ||
6b8edb51 PA |
3965 | ptid_t |
3966 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3967 | { |
d01949b6 | 3968 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3969 | |
3970 | putpkt ("qC"); | |
aa7b36b8 | 3971 | getpkt (&rs->buf); |
2e9f7625 | 3972 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3973 | { |
256642e8 | 3974 | const char *obuf; |
c9f35b34 KB |
3975 | ptid_t result; |
3976 | ||
3977 | result = read_ptid (&rs->buf[2], &obuf); | |
2189c312 SM |
3978 | if (*obuf != '\0') |
3979 | remote_debug_printf ("warning: garbage in qC reply"); | |
c9f35b34 KB |
3980 | |
3981 | return result; | |
3982 | } | |
c906108c SS |
3983 | else |
3984 | return oldpid; | |
3985 | } | |
3986 | ||
6dc54d91 | 3987 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3988 | |
6b8edb51 PA |
3989 | int |
3990 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3991 | { |
6dc54d91 PA |
3992 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3993 | CRAZY_MAX_THREADS) >= 0) | |
3994 | return 1; | |
3995 | ||
3996 | return 0; | |
c906108c SS |
3997 | } |
3998 | ||
dc146f7c VP |
3999 | #if defined(HAVE_LIBEXPAT) |
4000 | ||
dc146f7c VP |
4001 | static void |
4002 | start_thread (struct gdb_xml_parser *parser, | |
4003 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
4004 | void *user_data, |
4005 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 4006 | { |
19ba03f4 SM |
4007 | struct threads_listing_context *data |
4008 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 4009 | struct gdb_xml_value *attr; |
dc146f7c | 4010 | |
4d0fdd9b | 4011 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
4012 | ptid_t ptid = read_ptid (id, NULL); |
4013 | ||
4014 | data->items.emplace_back (ptid); | |
4015 | thread_item &item = data->items.back (); | |
dc146f7c | 4016 | |
3d2c1d41 PA |
4017 | attr = xml_find_attribute (attributes, "core"); |
4018 | if (attr != NULL) | |
4d0fdd9b | 4019 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 4020 | |
79efa585 | 4021 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 4022 | if (attr != NULL) |
4d0fdd9b | 4023 | item.name = (const char *) attr->value.get (); |
79efa585 | 4024 | |
f6327dcb KB |
4025 | attr = xml_find_attribute (attributes, "handle"); |
4026 | if (attr != NULL) | |
4d0fdd9b | 4027 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
4028 | } |
4029 | ||
4030 | static void | |
4031 | end_thread (struct gdb_xml_parser *parser, | |
4032 | const struct gdb_xml_element *element, | |
4033 | void *user_data, const char *body_text) | |
4034 | { | |
19ba03f4 SM |
4035 | struct threads_listing_context *data |
4036 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 4037 | |
21fe1c75 SM |
4038 | if (body_text != NULL && *body_text != '\0') |
4039 | data->items.back ().extra = body_text; | |
dc146f7c VP |
4040 | } |
4041 | ||
4042 | const struct gdb_xml_attribute thread_attributes[] = { | |
4043 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
4044 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 4045 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 4046 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
4047 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
4048 | }; | |
4049 | ||
4050 | const struct gdb_xml_element thread_children[] = { | |
4051 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
4052 | }; | |
4053 | ||
4054 | const struct gdb_xml_element threads_children[] = { | |
4055 | { "thread", thread_attributes, thread_children, | |
4056 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
4057 | start_thread, end_thread }, | |
4058 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
4059 | }; | |
4060 | ||
4061 | const struct gdb_xml_element threads_elements[] = { | |
4062 | { "threads", NULL, threads_children, | |
4063 | GDB_XML_EF_NONE, NULL, NULL }, | |
4064 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
4065 | }; | |
4066 | ||
4067 | #endif | |
4068 | ||
6dc54d91 | 4069 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 4070 | |
6b8edb51 PA |
4071 | int |
4072 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 4073 | { |
dc146f7c | 4074 | #if defined(HAVE_LIBEXPAT) |
ff52c073 | 4075 | if (m_features.packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 4076 | { |
9018be22 | 4077 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 4078 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 4079 | |
9018be22 | 4080 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 4081 | { |
6dc54d91 | 4082 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 4083 | threads_elements, xml->data (), context); |
dc146f7c VP |
4084 | } |
4085 | ||
6dc54d91 | 4086 | return 1; |
dc146f7c VP |
4087 | } |
4088 | #endif | |
4089 | ||
6dc54d91 PA |
4090 | return 0; |
4091 | } | |
4092 | ||
4093 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
4094 | ||
6b8edb51 PA |
4095 | int |
4096 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
4097 | { |
4098 | struct remote_state *rs = get_remote_state (); | |
4099 | ||
b80fafe3 | 4100 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 4101 | { |
256642e8 | 4102 | const char *bufp; |
6dc54d91 | 4103 | |
9d1f7ab2 | 4104 | putpkt ("qfThreadInfo"); |
aa7b36b8 | 4105 | getpkt (&rs->buf); |
8d64371b | 4106 | bufp = rs->buf.data (); |
9d1f7ab2 | 4107 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 4108 | { |
9d1f7ab2 MS |
4109 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
4110 | { | |
4111 | do | |
4112 | { | |
21fe1c75 SM |
4113 | ptid_t ptid = read_ptid (bufp, &bufp); |
4114 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
4115 | } |
4116 | while (*bufp++ == ','); /* comma-separated list */ | |
4117 | putpkt ("qsThreadInfo"); | |
aa7b36b8 | 4118 | getpkt (&rs->buf); |
8d64371b | 4119 | bufp = rs->buf.data (); |
9d1f7ab2 | 4120 | } |
6dc54d91 PA |
4121 | return 1; |
4122 | } | |
4123 | else | |
4124 | { | |
4125 | /* Packet not recognized. */ | |
4126 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
4127 | } |
4128 | } | |
4129 | ||
6dc54d91 PA |
4130 | return 0; |
4131 | } | |
4132 | ||
a05575d3 TBA |
4133 | /* Return true if INF only has one non-exited thread. */ |
4134 | ||
4135 | static bool | |
4136 | has_single_non_exited_thread (inferior *inf) | |
4137 | { | |
4138 | int count = 0; | |
4139 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) | |
4140 | if (++count > 1) | |
4141 | break; | |
4142 | return count == 1; | |
4143 | } | |
4144 | ||
e8032dde | 4145 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
4146 | targets. */ |
4147 | ||
f6ac5f3d PA |
4148 | void |
4149 | remote_target::update_thread_list () | |
6dc54d91 | 4150 | { |
6dc54d91 | 4151 | struct threads_listing_context context; |
ab970af1 | 4152 | int got_list = 0; |
e8032dde | 4153 | |
6dc54d91 PA |
4154 | /* We have a few different mechanisms to fetch the thread list. Try |
4155 | them all, starting with the most preferred one first, falling | |
4156 | back to older methods. */ | |
6b8edb51 PA |
4157 | if (remote_get_threads_with_qxfer (&context) |
4158 | || remote_get_threads_with_qthreadinfo (&context) | |
4159 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 4160 | { |
ab970af1 PA |
4161 | got_list = 1; |
4162 | ||
21fe1c75 | 4163 | if (context.items.empty () |
f6ac5f3d | 4164 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
4165 | { |
4166 | /* Some targets don't really support threads, but still | |
4167 | reply an (empty) thread list in response to the thread | |
4168 | listing packets, instead of replying "packet not | |
4169 | supported". Exit early so we don't delete the main | |
4170 | thread. */ | |
7d1a114c PA |
4171 | return; |
4172 | } | |
4173 | ||
ab970af1 PA |
4174 | /* CONTEXT now holds the current thread list on the remote |
4175 | target end. Delete GDB-side threads no longer found on the | |
4176 | target. */ | |
08036331 | 4177 | for (thread_info *tp : all_threads_safe ()) |
cbb8991c | 4178 | { |
5b6d1e4f PA |
4179 | if (tp->inf->process_target () != this) |
4180 | continue; | |
4181 | ||
21fe1c75 | 4182 | if (!context.contains_thread (tp->ptid)) |
ab970af1 | 4183 | { |
a05575d3 TBA |
4184 | /* Do not remove the thread if it is the last thread in |
4185 | the inferior. This situation happens when we have a | |
4186 | pending exit process status to process. Otherwise we | |
4187 | may end up with a seemingly live inferior (i.e. pid | |
4188 | != 0) that has no threads. */ | |
4189 | if (has_single_non_exited_thread (tp->inf)) | |
4190 | continue; | |
4191 | ||
ab970af1 | 4192 | /* Not found. */ |
00431a78 | 4193 | delete_thread (tp); |
ab970af1 | 4194 | } |
cbb8991c DB |
4195 | } |
4196 | ||
4197 | /* Remove any unreported fork child threads from CONTEXT so | |
4198 | that we don't interfere with follow fork, which is where | |
4199 | creation of such threads is handled. */ | |
4200 | remove_new_fork_children (&context); | |
74531fed | 4201 | |
ab970af1 | 4202 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 4203 | for (thread_item &item : context.items) |
6dc54d91 | 4204 | { |
21fe1c75 | 4205 | if (item.ptid != null_ptid) |
6dc54d91 | 4206 | { |
6dc54d91 | 4207 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
4208 | executing until proven otherwise with a stop reply. |
4209 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 4210 | stopped. */ |
8a82de58 | 4211 | bool executing = target_is_non_stop_p (); |
6dc54d91 | 4212 | |
21fe1c75 | 4213 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 4214 | |
9213a6d7 | 4215 | thread_info *tp = this->find_thread (item.ptid); |
00431a78 | 4216 | remote_thread_info *info = get_remote_thread_info (tp); |
21fe1c75 | 4217 | info->core = item.core; |
7aabaf9d SM |
4218 | info->extra = std::move (item.extra); |
4219 | info->name = std::move (item.name); | |
4220 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
4221 | } |
4222 | } | |
4223 | } | |
4224 | ||
ab970af1 PA |
4225 | if (!got_list) |
4226 | { | |
4227 | /* If no thread listing method is supported, then query whether | |
4228 | each known thread is alive, one by one, with the T packet. | |
4229 | If the target doesn't support threads at all, then this is a | |
4230 | no-op. See remote_thread_alive. */ | |
4231 | prune_threads (); | |
4232 | } | |
9d1f7ab2 MS |
4233 | } |
4234 | ||
802188a7 | 4235 | /* |
9d1f7ab2 MS |
4236 | * Collect a descriptive string about the given thread. |
4237 | * The target may say anything it wants to about the thread | |
4238 | * (typically info about its blocked / runnable state, name, etc.). | |
4239 | * This string will appear in the info threads display. | |
802188a7 | 4240 | * |
9d1f7ab2 MS |
4241 | * Optional: targets are not required to implement this function. |
4242 | */ | |
4243 | ||
f6ac5f3d PA |
4244 | const char * |
4245 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 4246 | { |
d01949b6 | 4247 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
4248 | int set; |
4249 | threadref id; | |
4250 | struct gdb_ext_thread_info threadinfo; | |
9d1f7ab2 | 4251 | |
5d93a237 | 4252 | if (rs->remote_desc == 0) /* paranoia */ |
f34652de | 4253 | internal_error (_("remote_threads_extra_info")); |
9d1f7ab2 | 4254 | |
d7e15655 | 4255 | if (tp->ptid == magic_null_ptid |
e38504b3 | 4256 | || (tp->ptid.pid () != 0 && tp->ptid.lwp () == 0)) |
60e569b9 PA |
4257 | /* This is the main thread which was added by GDB. The remote |
4258 | server doesn't know about it. */ | |
4259 | return NULL; | |
4260 | ||
c76a8ea3 PA |
4261 | std::string &extra = get_remote_thread_info (tp)->extra; |
4262 | ||
4263 | /* If already have cached info, use it. */ | |
4264 | if (!extra.empty ()) | |
4265 | return extra.c_str (); | |
4266 | ||
ff52c073 | 4267 | if (m_features.packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 4268 | { |
c76a8ea3 PA |
4269 | /* If we're using qXfer:threads:read, then the extra info is |
4270 | included in the XML. So if we didn't have anything cached, | |
4271 | it's because there's really no extra info. */ | |
4272 | return NULL; | |
dc146f7c VP |
4273 | } |
4274 | ||
b80fafe3 | 4275 | if (rs->use_threadextra_query) |
9d1f7ab2 | 4276 | { |
8d64371b TT |
4277 | char *b = rs->buf.data (); |
4278 | char *endb = b + get_remote_packet_size (); | |
82f73884 PA |
4279 | |
4280 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
4281 | b += strlen (b); | |
4282 | write_ptid (b, endb, tp->ptid); | |
4283 | ||
2e9f7625 | 4284 | putpkt (rs->buf); |
aa7b36b8 | 4285 | getpkt (&rs->buf); |
2e9f7625 | 4286 | if (rs->buf[0] != 0) |
9d1f7ab2 | 4287 | { |
8d64371b TT |
4288 | extra.resize (strlen (rs->buf.data ()) / 2); |
4289 | hex2bin (rs->buf.data (), (gdb_byte *) &extra[0], extra.size ()); | |
c76a8ea3 | 4290 | return extra.c_str (); |
9d1f7ab2 | 4291 | } |
0f71a2f6 | 4292 | } |
9d1f7ab2 MS |
4293 | |
4294 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 4295 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
4296 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
4297 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
e38504b3 | 4298 | int_to_threadref (&id, tp->ptid.lwp ()); |
9d1f7ab2 MS |
4299 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
4300 | if (threadinfo.active) | |
0f71a2f6 | 4301 | { |
9d1f7ab2 | 4302 | if (*threadinfo.shortname) |
c76a8ea3 | 4303 | string_appendf (extra, " Name: %s", threadinfo.shortname); |
9d1f7ab2 | 4304 | if (*threadinfo.display) |
c76a8ea3 PA |
4305 | { |
4306 | if (!extra.empty ()) | |
4307 | extra += ','; | |
4308 | string_appendf (extra, " State: %s", threadinfo.display); | |
4309 | } | |
9d1f7ab2 | 4310 | if (*threadinfo.more_display) |
c5aa993b | 4311 | { |
c76a8ea3 PA |
4312 | if (!extra.empty ()) |
4313 | extra += ','; | |
4314 | string_appendf (extra, " Priority: %s", threadinfo.more_display); | |
c5aa993b | 4315 | } |
c76a8ea3 | 4316 | return extra.c_str (); |
0f71a2f6 | 4317 | } |
9d1f7ab2 | 4318 | return NULL; |
0f71a2f6 | 4319 | } |
c906108c | 4320 | \f |
c5aa993b | 4321 | |
f6ac5f3d PA |
4322 | bool |
4323 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
4324 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
4325 | { |
4326 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 4327 | char *p = rs->buf.data (); |
0fb4aa4b | 4328 | |
bba74b36 | 4329 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
4330 | p += strlen (p); |
4331 | p += hexnumstr (p, addr); | |
4332 | putpkt (rs->buf); | |
aa7b36b8 | 4333 | getpkt (&rs->buf); |
8d64371b | 4334 | p = rs->buf.data (); |
0fb4aa4b PA |
4335 | |
4336 | if (*p == 'E') | |
4337 | error (_("Remote failure reply: %s"), p); | |
4338 | ||
4339 | if (*p++ == 'm') | |
4340 | { | |
256642e8 | 4341 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 4342 | return true; |
0fb4aa4b PA |
4343 | } |
4344 | ||
5d9310c4 | 4345 | return false; |
0fb4aa4b PA |
4346 | } |
4347 | ||
f6ac5f3d PA |
4348 | std::vector<static_tracepoint_marker> |
4349 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
4350 | { |
4351 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 4352 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 4353 | const char *p; |
5d9310c4 | 4354 | static_tracepoint_marker marker; |
0fb4aa4b PA |
4355 | |
4356 | /* Ask for a first packet of static tracepoint marker | |
4357 | definition. */ | |
4358 | putpkt ("qTfSTM"); | |
aa7b36b8 | 4359 | getpkt (&rs->buf); |
8d64371b | 4360 | p = rs->buf.data (); |
0fb4aa4b PA |
4361 | if (*p == 'E') |
4362 | error (_("Remote failure reply: %s"), p); | |
4363 | ||
0fb4aa4b PA |
4364 | while (*p++ == 'm') |
4365 | { | |
0fb4aa4b PA |
4366 | do |
4367 | { | |
5d9310c4 | 4368 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 4369 | |
5d9310c4 SM |
4370 | if (strid == NULL || marker.str_id == strid) |
4371 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
4372 | } |
4373 | while (*p++ == ','); /* comma-separated list */ | |
4374 | /* Ask for another packet of static tracepoint definition. */ | |
4375 | putpkt ("qTsSTM"); | |
aa7b36b8 | 4376 | getpkt (&rs->buf); |
8d64371b | 4377 | p = rs->buf.data (); |
0fb4aa4b PA |
4378 | } |
4379 | ||
0fb4aa4b PA |
4380 | return markers; |
4381 | } | |
4382 | ||
4383 | \f | |
10760264 JB |
4384 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
4385 | ||
f6ac5f3d | 4386 | ptid_t |
c80e29db | 4387 | remote_target::get_ada_task_ptid (long lwp, ULONGEST thread) |
10760264 | 4388 | { |
184ea2f7 | 4389 | return ptid_t (inferior_ptid.pid (), lwp); |
10760264 JB |
4390 | } |
4391 | \f | |
4392 | ||
24b06219 | 4393 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 4394 | |
6b8edb51 PA |
4395 | void |
4396 | remote_target::extended_remote_restart () | |
c906108c | 4397 | { |
d01949b6 | 4398 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4399 | |
4400 | /* Send the restart command; for reasons I don't understand the | |
4401 | remote side really expects a number after the "R". */ | |
8d64371b | 4402 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "R%x", 0); |
6d820c5c | 4403 | putpkt (rs->buf); |
c906108c | 4404 | |
ad9a8f3f | 4405 | remote_fileio_reset (); |
c906108c SS |
4406 | } |
4407 | \f | |
4408 | /* Clean up connection to a remote debugger. */ | |
4409 | ||
f6ac5f3d PA |
4410 | void |
4411 | remote_target::close () | |
c906108c | 4412 | { |
048094ac | 4413 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4414 | terminal_ours (); |
ce5ce7ed | 4415 | |
6b8edb51 PA |
4416 | trace_reset_local_state (); |
4417 | ||
4418 | delete this; | |
4419 | } | |
4420 | ||
4421 | remote_target::~remote_target () | |
4422 | { | |
4423 | struct remote_state *rs = get_remote_state (); | |
4424 | ||
4425 | /* Check for NULL because we may get here with a partially | |
4426 | constructed target/connection. */ | |
4427 | if (rs->remote_desc == nullptr) | |
4428 | return; | |
4429 | ||
4430 | serial_close (rs->remote_desc); | |
4431 | ||
4432 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4433 | everything of this target. */ |
6b8edb51 | 4434 | discard_pending_stop_replies_in_queue (); |
74531fed | 4435 | |
92b98b37 | 4436 | rs->delete_async_event_handler (); |
722247f1 | 4437 | |
97dfbadd | 4438 | delete rs->notif_state; |
c906108c SS |
4439 | } |
4440 | ||
23860348 | 4441 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4442 | |
6b8edb51 PA |
4443 | void |
4444 | remote_target::get_offsets () | |
c906108c | 4445 | { |
d01949b6 | 4446 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4447 | char *buf; |
085dd6e6 | 4448 | char *ptr; |
31d99776 DJ |
4449 | int lose, num_segments = 0, do_sections, do_segments; |
4450 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
31d99776 | 4451 | |
a42d7dd8 | 4452 | if (current_program_space->symfile_object_file == NULL) |
31d99776 | 4453 | return; |
c906108c SS |
4454 | |
4455 | putpkt ("qOffsets"); | |
aa7b36b8 | 4456 | getpkt (&rs->buf); |
8d64371b | 4457 | buf = rs->buf.data (); |
c906108c SS |
4458 | |
4459 | if (buf[0] == '\000') | |
4460 | return; /* Return silently. Stub doesn't support | |
23860348 | 4461 | this command. */ |
c906108c SS |
4462 | if (buf[0] == 'E') |
4463 | { | |
8a3fe4f8 | 4464 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4465 | return; |
4466 | } | |
4467 | ||
4468 | /* Pick up each field in turn. This used to be done with scanf, but | |
4469 | scanf will make trouble if CORE_ADDR size doesn't match | |
4470 | conversion directives correctly. The following code will work | |
4471 | with any size of CORE_ADDR. */ | |
4472 | text_addr = data_addr = bss_addr = 0; | |
4473 | ptr = buf; | |
4474 | lose = 0; | |
4475 | ||
61012eef | 4476 | if (startswith (ptr, "Text=")) |
c906108c SS |
4477 | { |
4478 | ptr += 5; | |
4479 | /* Don't use strtol, could lose on big values. */ | |
4480 | while (*ptr && *ptr != ';') | |
4481 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4482 | |
61012eef | 4483 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4484 | { |
4485 | ptr += 6; | |
4486 | while (*ptr && *ptr != ';') | |
4487 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4488 | } | |
4489 | else | |
4490 | lose = 1; | |
4491 | ||
61012eef | 4492 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4493 | { |
4494 | ptr += 5; | |
4495 | while (*ptr && *ptr != ';') | |
4496 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4497 | |
31d99776 DJ |
4498 | if (bss_addr != data_addr) |
4499 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4500 | } | |
4501 | else | |
4502 | lose = 1; | |
4503 | } | |
61012eef | 4504 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4505 | { |
31d99776 DJ |
4506 | ptr += 8; |
4507 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4508 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4509 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4510 | num_segments = 1; | |
4511 | ||
61012eef | 4512 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4513 | { |
4514 | ptr += 9; | |
4515 | while (*ptr && *ptr != ';') | |
4516 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4517 | num_segments++; | |
4518 | } | |
c906108c SS |
4519 | } |
4520 | else | |
4521 | lose = 1; | |
4522 | ||
4523 | if (lose) | |
8a3fe4f8 | 4524 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4525 | else if (*ptr != '\0') |
4526 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4527 | |
a42d7dd8 TT |
4528 | objfile *objf = current_program_space->symfile_object_file; |
4529 | section_offsets offs = objf->section_offsets; | |
c906108c | 4530 | |
98badbfd | 4531 | symfile_segment_data_up data = get_symfile_segment_data (objf->obfd.get ()); |
31d99776 DJ |
4532 | do_segments = (data != NULL); |
4533 | do_sections = num_segments == 0; | |
c906108c | 4534 | |
28c32713 | 4535 | if (num_segments > 0) |
31d99776 | 4536 | { |
31d99776 DJ |
4537 | segments[0] = text_addr; |
4538 | segments[1] = data_addr; | |
4539 | } | |
28c32713 JB |
4540 | /* If we have two segments, we can still try to relocate everything |
4541 | by assuming that the .text and .data offsets apply to the whole | |
4542 | text and data segments. Convert the offsets given in the packet | |
4543 | to base addresses for symfile_map_offsets_to_segments. */ | |
68b888ff | 4544 | else if (data != nullptr && data->segments.size () == 2) |
28c32713 | 4545 | { |
68b888ff SM |
4546 | segments[0] = data->segments[0].base + text_addr; |
4547 | segments[1] = data->segments[1].base + data_addr; | |
28c32713 JB |
4548 | num_segments = 2; |
4549 | } | |
8d385431 DJ |
4550 | /* If the object file has only one segment, assume that it is text |
4551 | rather than data; main programs with no writable data are rare, | |
4552 | but programs with no code are useless. Of course the code might | |
4553 | have ended up in the data segment... to detect that we would need | |
4554 | the permissions here. */ | |
68b888ff | 4555 | else if (data && data->segments.size () == 1) |
8d385431 | 4556 | { |
68b888ff | 4557 | segments[0] = data->segments[0].base + text_addr; |
8d385431 DJ |
4558 | num_segments = 1; |
4559 | } | |
28c32713 JB |
4560 | /* There's no way to relocate by segment. */ |
4561 | else | |
4562 | do_segments = 0; | |
31d99776 DJ |
4563 | |
4564 | if (do_segments) | |
4565 | { | |
98badbfd | 4566 | int ret = symfile_map_offsets_to_segments (objf->obfd.get (), |
62982abd SM |
4567 | data.get (), offs, |
4568 | num_segments, segments); | |
31d99776 DJ |
4569 | |
4570 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4571 | error (_("Can not handle qOffsets TextSeg " |
4572 | "response with this symbol file")); | |
31d99776 DJ |
4573 | |
4574 | if (ret > 0) | |
4575 | do_sections = 0; | |
4576 | } | |
c906108c | 4577 | |
31d99776 DJ |
4578 | if (do_sections) |
4579 | { | |
a42d7dd8 | 4580 | offs[SECT_OFF_TEXT (objf)] = text_addr; |
31d99776 | 4581 | |
3e43a32a MS |
4582 | /* This is a temporary kludge to force data and bss to use the |
4583 | same offsets because that's what nlmconv does now. The real | |
4584 | solution requires changes to the stub and remote.c that I | |
4585 | don't have time to do right now. */ | |
31d99776 | 4586 | |
a42d7dd8 TT |
4587 | offs[SECT_OFF_DATA (objf)] = data_addr; |
4588 | offs[SECT_OFF_BSS (objf)] = data_addr; | |
31d99776 | 4589 | } |
c906108c | 4590 | |
a42d7dd8 | 4591 | objfile_relocate (objf, offs); |
c906108c SS |
4592 | } |
4593 | ||
9a7071a8 | 4594 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4595 | |
4596 | void | |
4597 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4598 | { |
5d93a237 TT |
4599 | struct remote_state *rs = get_remote_state (); |
4600 | ||
9a7071a8 | 4601 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4602 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4603 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4604 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4605 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4606 | { | |
5d93a237 | 4607 | serial_send_break (rs->remote_desc); |
c33e31fd | 4608 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4609 | } |
4610 | else | |
f34652de | 4611 | internal_error (_("Invalid value for interrupt_sequence_mode: %s."), |
9a7071a8 JB |
4612 | interrupt_sequence_mode); |
4613 | } | |
4614 | ||
3405876a PA |
4615 | |
4616 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4617 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4618 | ||
4619 | static ptid_t | |
e3b2741b | 4620 | stop_reply_extract_thread (const char *stop_reply) |
3405876a PA |
4621 | { |
4622 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4623 | { | |
256642e8 | 4624 | const char *p; |
3405876a PA |
4625 | |
4626 | /* Txx r:val ; r:val (...) */ | |
4627 | p = &stop_reply[3]; | |
4628 | ||
4629 | /* Look for "register" named "thread". */ | |
4630 | while (*p != '\0') | |
4631 | { | |
256642e8 | 4632 | const char *p1; |
3405876a PA |
4633 | |
4634 | p1 = strchr (p, ':'); | |
4635 | if (p1 == NULL) | |
4636 | return null_ptid; | |
4637 | ||
4638 | if (strncmp (p, "thread", p1 - p) == 0) | |
4639 | return read_ptid (++p1, &p); | |
4640 | ||
4641 | p1 = strchr (p, ';'); | |
4642 | if (p1 == NULL) | |
4643 | return null_ptid; | |
4644 | p1++; | |
4645 | ||
4646 | p = p1; | |
4647 | } | |
4648 | } | |
4649 | ||
4650 | return null_ptid; | |
4651 | } | |
4652 | ||
b7ea362b PA |
4653 | /* Determine the remote side's current thread. If we have a stop |
4654 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4655 | "thread" register we can extract the current thread from. If not, | |
4656 | ask the remote which is the current thread with qC. The former | |
4657 | method avoids a roundtrip. */ | |
4658 | ||
6b8edb51 | 4659 | ptid_t |
e3b2741b | 4660 | remote_target::get_current_thread (const char *wait_status) |
b7ea362b | 4661 | { |
6a49a997 | 4662 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4663 | |
4664 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4665 | the target architecture, which we haven't yet fully determined at | |
4666 | this point. */ | |
4667 | if (wait_status != NULL) | |
4668 | ptid = stop_reply_extract_thread (wait_status); | |
d7e15655 | 4669 | if (ptid == null_ptid) |
b7ea362b PA |
4670 | ptid = remote_current_thread (inferior_ptid); |
4671 | ||
4672 | return ptid; | |
4673 | } | |
4674 | ||
49c62f2e PA |
4675 | /* Query the remote target for which is the current thread/process, |
4676 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4677 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4678 | to return the current thread. |
4679 | ||
4680 | This function is called after handling the '?' or 'vRun' packets, | |
4681 | whose response is a stop reply from which we can also try | |
4682 | extracting the thread. If the target doesn't support the explicit | |
4683 | qC query, we infer the current thread from that stop reply, passed | |
64d38fdd | 4684 | in in WAIT_STATUS, which may be NULL. |
49c62f2e | 4685 | |
64d38fdd JM |
4686 | The function returns pointer to the main thread of the inferior. */ |
4687 | ||
4688 | thread_info * | |
e3b2741b | 4689 | remote_target::add_current_inferior_and_thread (const char *wait_status) |
49c62f2e | 4690 | { |
9ab8741a | 4691 | bool fake_pid_p = false; |
49c62f2e | 4692 | |
0ac55310 | 4693 | switch_to_no_thread (); |
49c62f2e | 4694 | |
0ac55310 PA |
4695 | /* Now, if we have thread information, update the current thread's |
4696 | ptid. */ | |
87215ad1 | 4697 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4698 | |
87215ad1 | 4699 | if (curr_ptid != null_ptid) |
49c62f2e | 4700 | { |
ff52c073 | 4701 | if (!m_features.remote_multi_process_p ()) |
9ab8741a | 4702 | fake_pid_p = true; |
49c62f2e PA |
4703 | } |
4704 | else | |
4705 | { | |
4706 | /* Without this, some commands which require an active target | |
4707 | (such as kill) won't work. This variable serves (at least) | |
4708 | double duty as both the pid of the target process (if it has | |
4709 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4710 | curr_ptid = magic_null_ptid; |
9ab8741a | 4711 | fake_pid_p = true; |
49c62f2e PA |
4712 | } |
4713 | ||
e99b03dc | 4714 | remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1); |
49c62f2e | 4715 | |
87215ad1 SDJ |
4716 | /* Add the main thread and switch to it. Don't try reading |
4717 | registers yet, since we haven't fetched the target description | |
4718 | yet. */ | |
5b6d1e4f | 4719 | thread_info *tp = add_thread_silent (this, curr_ptid); |
87215ad1 | 4720 | switch_to_thread_no_regs (tp); |
64d38fdd JM |
4721 | |
4722 | return tp; | |
49c62f2e PA |
4723 | } |
4724 | ||
6efcd9a8 PA |
4725 | /* Print info about a thread that was found already stopped on |
4726 | connection. */ | |
4727 | ||
1edb66d8 SM |
4728 | void |
4729 | remote_target::print_one_stopped_thread (thread_info *thread) | |
6efcd9a8 | 4730 | { |
1edb66d8 SM |
4731 | target_waitstatus ws; |
4732 | ||
4733 | /* If there is a pending waitstatus, use it. If there isn't it's because | |
4734 | the thread's stop was reported with TARGET_WAITKIND_STOPPED / GDB_SIGNAL_0 | |
4735 | and process_initial_stop_replies decided it wasn't interesting to save | |
4736 | and report to the core. */ | |
4737 | if (thread->has_pending_waitstatus ()) | |
4738 | { | |
4739 | ws = thread->pending_waitstatus (); | |
4740 | thread->clear_pending_waitstatus (); | |
4741 | } | |
4742 | else | |
4743 | { | |
183be222 | 4744 | ws.set_stopped (GDB_SIGNAL_0); |
1edb66d8 | 4745 | } |
6efcd9a8 | 4746 | |
00431a78 | 4747 | switch_to_thread (thread); |
1edb66d8 | 4748 | thread->set_stop_pc (get_frame_pc (get_current_frame ())); |
6efcd9a8 PA |
4749 | set_current_sal_from_frame (get_current_frame ()); |
4750 | ||
1edb66d8 SM |
4751 | /* For "info program". */ |
4752 | set_last_target_status (this, thread->ptid, ws); | |
6efcd9a8 | 4753 | |
183be222 | 4754 | if (ws.kind () == TARGET_WAITKIND_STOPPED) |
6efcd9a8 | 4755 | { |
183be222 | 4756 | enum gdb_signal sig = ws.sig (); |
6efcd9a8 PA |
4757 | |
4758 | if (signal_print_state (sig)) | |
3f75a984 | 4759 | notify_signal_received (sig); |
6efcd9a8 | 4760 | } |
87829267 SM |
4761 | |
4762 | notify_normal_stop (nullptr, 1); | |
6efcd9a8 PA |
4763 | } |
4764 | ||
221e1a37 PA |
4765 | /* Process all initial stop replies the remote side sent in response |
4766 | to the ? packet. These indicate threads that were already stopped | |
4767 | on initial connection. We mark these threads as stopped and print | |
4768 | their current frame before giving the user the prompt. */ | |
4769 | ||
6b8edb51 PA |
4770 | void |
4771 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4772 | { |
4773 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4774 | struct thread_info *selected = NULL; |
4775 | struct thread_info *lowest_stopped = NULL; | |
4776 | struct thread_info *first = NULL; | |
221e1a37 | 4777 | |
1edb66d8 SM |
4778 | /* This is only used when the target is non-stop. */ |
4779 | gdb_assert (target_is_non_stop_p ()); | |
4780 | ||
221e1a37 PA |
4781 | /* Consume the initial pending events. */ |
4782 | while (pending_stop_replies-- > 0) | |
4783 | { | |
4784 | ptid_t waiton_ptid = minus_one_ptid; | |
4785 | ptid_t event_ptid; | |
4786 | struct target_waitstatus ws; | |
4787 | int ignore_event = 0; | |
4788 | ||
221e1a37 PA |
4789 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); |
4790 | if (remote_debug) | |
c272a98c | 4791 | print_target_wait_results (waiton_ptid, event_ptid, ws); |
221e1a37 | 4792 | |
183be222 | 4793 | switch (ws.kind ()) |
221e1a37 PA |
4794 | { |
4795 | case TARGET_WAITKIND_IGNORE: | |
4796 | case TARGET_WAITKIND_NO_RESUMED: | |
4797 | case TARGET_WAITKIND_SIGNALLED: | |
4798 | case TARGET_WAITKIND_EXITED: | |
4799 | /* We shouldn't see these, but if we do, just ignore. */ | |
2189c312 | 4800 | remote_debug_printf ("event ignored"); |
221e1a37 PA |
4801 | ignore_event = 1; |
4802 | break; | |
4803 | ||
221e1a37 PA |
4804 | default: |
4805 | break; | |
4806 | } | |
4807 | ||
4808 | if (ignore_event) | |
4809 | continue; | |
4810 | ||
9213a6d7 | 4811 | thread_info *evthread = this->find_thread (event_ptid); |
221e1a37 | 4812 | |
183be222 | 4813 | if (ws.kind () == TARGET_WAITKIND_STOPPED) |
221e1a37 | 4814 | { |
183be222 | 4815 | enum gdb_signal sig = ws.sig (); |
221e1a37 PA |
4816 | |
4817 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4818 | instead of signal 0. Suppress it. */ | |
4819 | if (sig == GDB_SIGNAL_TRAP) | |
4820 | sig = GDB_SIGNAL_0; | |
1edb66d8 | 4821 | evthread->set_stop_signal (sig); |
183be222 | 4822 | ws.set_stopped (sig); |
6efcd9a8 | 4823 | } |
221e1a37 | 4824 | |
183be222 SM |
4825 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
4826 | || ws.sig () != GDB_SIGNAL_0) | |
1edb66d8 | 4827 | evthread->set_pending_waitstatus (ws); |
6efcd9a8 | 4828 | |
719546c4 SM |
4829 | set_executing (this, event_ptid, false); |
4830 | set_running (this, event_ptid, false); | |
c9d22089 | 4831 | get_remote_thread_info (evthread)->set_not_resumed (); |
6efcd9a8 PA |
4832 | } |
4833 | ||
4834 | /* "Notice" the new inferiors before anything related to | |
4835 | registers/memory. */ | |
5b6d1e4f | 4836 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4837 | { |
30220b46 | 4838 | inf->needs_setup = true; |
6efcd9a8 PA |
4839 | |
4840 | if (non_stop) | |
4841 | { | |
08036331 | 4842 | thread_info *thread = any_live_thread_of_inferior (inf); |
00431a78 | 4843 | notice_new_inferior (thread, thread->state == THREAD_RUNNING, |
6efcd9a8 PA |
4844 | from_tty); |
4845 | } | |
4846 | } | |
4847 | ||
4848 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4849 | records the threads' stop pc, so must be done after "noticing" | |
4850 | the inferiors. */ | |
4851 | if (!non_stop) | |
4852 | { | |
abe8cab7 SM |
4853 | { |
4854 | /* At this point, the remote target is not async. It needs to be for | |
4855 | the poll in stop_all_threads to consider events from it, so enable | |
4856 | it temporarily. */ | |
4857 | gdb_assert (!this->is_async_p ()); | |
4a570176 TT |
4858 | SCOPE_EXIT { target_async (false); }; |
4859 | target_async (true); | |
4f5539f0 | 4860 | stop_all_threads ("remote connect in all-stop"); |
abe8cab7 | 4861 | } |
6efcd9a8 PA |
4862 | |
4863 | /* If all threads of an inferior were already stopped, we | |
4864 | haven't setup the inferior yet. */ | |
5b6d1e4f | 4865 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4866 | { |
6efcd9a8 PA |
4867 | if (inf->needs_setup) |
4868 | { | |
08036331 | 4869 | thread_info *thread = any_live_thread_of_inferior (inf); |
6efcd9a8 PA |
4870 | switch_to_thread_no_regs (thread); |
4871 | setup_inferior (0); | |
4872 | } | |
4873 | } | |
221e1a37 | 4874 | } |
6efcd9a8 PA |
4875 | |
4876 | /* Now go over all threads that are stopped, and print their current | |
4877 | frame. If all-stop, then if there's a signalled thread, pick | |
4878 | that as current. */ | |
5b6d1e4f | 4879 | for (thread_info *thread : all_non_exited_threads (this)) |
6efcd9a8 | 4880 | { |
6efcd9a8 PA |
4881 | if (first == NULL) |
4882 | first = thread; | |
4883 | ||
4884 | if (!non_stop) | |
00431a78 | 4885 | thread->set_running (false); |
6efcd9a8 PA |
4886 | else if (thread->state != THREAD_STOPPED) |
4887 | continue; | |
4888 | ||
1edb66d8 | 4889 | if (selected == nullptr && thread->has_pending_waitstatus ()) |
6efcd9a8 PA |
4890 | selected = thread; |
4891 | ||
5d5658a1 PA |
4892 | if (lowest_stopped == NULL |
4893 | || thread->inf->num < lowest_stopped->inf->num | |
4894 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4895 | lowest_stopped = thread; |
4896 | ||
4897 | if (non_stop) | |
4898 | print_one_stopped_thread (thread); | |
4899 | } | |
4900 | ||
4901 | /* In all-stop, we only print the status of one thread, and leave | |
4902 | others with their status pending. */ | |
4903 | if (!non_stop) | |
4904 | { | |
08036331 | 4905 | thread_info *thread = selected; |
6efcd9a8 PA |
4906 | if (thread == NULL) |
4907 | thread = lowest_stopped; | |
4908 | if (thread == NULL) | |
4909 | thread = first; | |
4910 | ||
4911 | print_one_stopped_thread (thread); | |
4912 | } | |
221e1a37 PA |
4913 | } |
4914 | ||
45664f16 | 4915 | /* Mark a remote_target as starting (by setting the starting_up flag within |
7a34f66b AB |
4916 | its remote_state) for the lifetime of this object. The reference count |
4917 | on the remote target is temporarily incremented, to prevent the target | |
4918 | being deleted under our feet. */ | |
4919 | ||
4920 | struct scoped_mark_target_starting | |
4921 | { | |
4922 | /* Constructor, TARGET is the target to be marked as starting, its | |
4923 | reference count will be incremented. */ | |
4924 | scoped_mark_target_starting (remote_target *target) | |
45664f16 AB |
4925 | : m_remote_target (remote_target_ref::new_reference (target)), |
4926 | m_restore_starting_up (set_starting_up_flag (target)) | |
4927 | { /* Nothing. */ } | |
4928 | ||
4929 | private: | |
7a34f66b | 4930 | |
45664f16 AB |
4931 | /* Helper function, set the starting_up flag on TARGET and return an |
4932 | object which, when it goes out of scope, will restore the previous | |
4933 | value of the starting_up flag. */ | |
4934 | static scoped_restore_tmpl<bool> | |
4935 | set_starting_up_flag (remote_target *target) | |
7a34f66b | 4936 | { |
45664f16 AB |
4937 | remote_state *rs = target->get_remote_state (); |
4938 | gdb_assert (!rs->starting_up); | |
4939 | return make_scoped_restore (&rs->starting_up, true); | |
7a34f66b AB |
4940 | } |
4941 | ||
45664f16 AB |
4942 | /* A gdb::ref_ptr pointer to a remote_target. */ |
4943 | using remote_target_ref = gdb::ref_ptr<remote_target, target_ops_ref_policy>; | |
4944 | ||
4945 | /* A reference to the target on which we are operating. */ | |
4946 | remote_target_ref m_remote_target; | |
7a34f66b | 4947 | |
45664f16 AB |
4948 | /* An object which restores the previous value of the starting_up flag |
4949 | when it goes out of scope. */ | |
4950 | scoped_restore_tmpl<bool> m_restore_starting_up; | |
7a34f66b AB |
4951 | }; |
4952 | ||
288712bb AB |
4953 | /* Helper for remote_target::start_remote, start the remote connection and |
4954 | sync state. Return true if everything goes OK, otherwise, return false. | |
4955 | This function exists so that the scoped_restore created within it will | |
4956 | expire before we return to remote_target::start_remote. */ | |
048094ac | 4957 | |
288712bb AB |
4958 | bool |
4959 | remote_target::start_remote_1 (int from_tty, int extended_p) | |
c906108c | 4960 | { |
2189c312 SM |
4961 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
4962 | ||
c8d104ad | 4963 | struct remote_state *rs = get_remote_state (); |
8621d6a9 | 4964 | |
048094ac PA |
4965 | /* Signal other parts that we're going through the initial setup, |
4966 | and so things may not be stable yet. E.g., we don't try to | |
4967 | install tracepoints until we've relocated symbols. Also, a | |
4968 | Ctrl-C before we're connected and synced up can't interrupt the | |
4969 | target. Instead, it offers to drop the (potentially wedged) | |
4970 | connection. */ | |
7a34f66b | 4971 | scoped_mark_target_starting target_is_starting (this); |
048094ac | 4972 | |
522002f9 | 4973 | QUIT; |
c906108c | 4974 | |
9a7071a8 JB |
4975 | if (interrupt_on_connect) |
4976 | send_interrupt_sequence (); | |
4977 | ||
57e12211 | 4978 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4979 | remote_serial_write ("+", 1); |
1e51243a | 4980 | |
c8d104ad PA |
4981 | /* The first packet we send to the target is the optional "supported |
4982 | packets" request. If the target can answer this, it will tell us | |
4983 | which later probes to skip. */ | |
4984 | remote_query_supported (); | |
4985 | ||
34f0de5a CS |
4986 | /* Check vCont support and set the remote state's vCont_action_support |
4987 | attribute. */ | |
4988 | remote_vcont_probe (); | |
4989 | ||
d914c394 | 4990 | /* If the stub wants to get a QAllow, compose one and send it. */ |
ff52c073 | 4991 | if (m_features.packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4992 | set_permissions (); |
d914c394 | 4993 | |
57809e5e JK |
4994 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4995 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4996 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4997 | invalid reply and GDB would return error in | |
4998 | remote_hostio_set_filesystem, making remote files access impossible. | |
4999 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
5000 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
5001 | { | |
5002 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
5003 | ||
5004 | putpkt (v_mustreplyempty); | |
aa7b36b8 | 5005 | getpkt (&rs->buf); |
8d64371b | 5006 | if (strcmp (rs->buf.data (), "OK") == 0) |
ff52c073 CS |
5007 | { |
5008 | m_features.m_protocol_packets[PACKET_vFile_setfs].support | |
5009 | = PACKET_DISABLE; | |
5010 | } | |
8d64371b | 5011 | else if (strcmp (rs->buf.data (), "") != 0) |
57809e5e | 5012 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, |
8d64371b | 5013 | rs->buf.data ()); |
57809e5e JK |
5014 | } |
5015 | ||
c8d104ad PA |
5016 | /* Next, we possibly activate noack mode. |
5017 | ||
5018 | If the QStartNoAckMode packet configuration is set to AUTO, | |
5019 | enable noack mode if the stub reported a wish for it with | |
5020 | qSupported. | |
5021 | ||
5022 | If set to TRUE, then enable noack mode even if the stub didn't | |
5023 | report it in qSupported. If the stub doesn't reply OK, the | |
5024 | session ends with an error. | |
5025 | ||
5026 | If FALSE, then don't activate noack mode, regardless of what the | |
5027 | stub claimed should be the default with qSupported. */ | |
5028 | ||
ff52c073 | 5029 | if (m_features.packet_support (PACKET_QStartNoAckMode) != PACKET_DISABLE) |
c8d104ad PA |
5030 | { |
5031 | putpkt ("QStartNoAckMode"); | |
aa7b36b8 | 5032 | getpkt (&rs->buf); |
ff52c073 | 5033 | if (m_features.packet_ok (rs->buf, PACKET_QStartNoAckMode) == PACKET_OK) |
c8d104ad PA |
5034 | rs->noack_mode = 1; |
5035 | } | |
5036 | ||
04bd08de | 5037 | if (extended_p) |
5fe04517 PA |
5038 | { |
5039 | /* Tell the remote that we are using the extended protocol. */ | |
5040 | putpkt ("!"); | |
aa7b36b8 | 5041 | getpkt (&rs->buf); |
5fe04517 PA |
5042 | } |
5043 | ||
9b224c5e PA |
5044 | /* Let the target know which signals it is allowed to pass down to |
5045 | the program. */ | |
5046 | update_signals_program_target (); | |
5047 | ||
d962ef82 DJ |
5048 | /* Next, if the target can specify a description, read it. We do |
5049 | this before anything involving memory or registers. */ | |
5050 | target_find_description (); | |
5051 | ||
6c95b8df PA |
5052 | /* Next, now that we know something about the target, update the |
5053 | address spaces in the program spaces. */ | |
5054 | update_address_spaces (); | |
5055 | ||
50c71eaf PA |
5056 | /* On OSs where the list of libraries is global to all |
5057 | processes, we fetch them early. */ | |
99d9c3b9 | 5058 | if (gdbarch_has_global_solist (current_inferior ()->arch ())) |
e696b3ad | 5059 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 5060 | |
6efcd9a8 | 5061 | if (target_is_non_stop_p ()) |
74531fed | 5062 | { |
ff52c073 | 5063 | if (m_features.packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
5064 | error (_("Non-stop mode requested, but remote " |
5065 | "does not support non-stop")); | |
74531fed PA |
5066 | |
5067 | putpkt ("QNonStop:1"); | |
aa7b36b8 | 5068 | getpkt (&rs->buf); |
74531fed | 5069 | |
8d64371b TT |
5070 | if (strcmp (rs->buf.data (), "OK") != 0) |
5071 | error (_("Remote refused setting non-stop mode with: %s"), | |
5072 | rs->buf.data ()); | |
74531fed PA |
5073 | |
5074 | /* Find about threads and processes the stub is already | |
5075 | controlling. We default to adding them in the running state. | |
5076 | The '?' query below will then tell us about which threads are | |
5077 | stopped. */ | |
f6ac5f3d | 5078 | this->update_thread_list (); |
74531fed | 5079 | } |
ff52c073 | 5080 | else if (m_features.packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
5081 | { |
5082 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 5083 | Request it explicitly. */ |
74531fed | 5084 | putpkt ("QNonStop:0"); |
aa7b36b8 | 5085 | getpkt (&rs->buf); |
74531fed | 5086 | |
8d64371b TT |
5087 | if (strcmp (rs->buf.data (), "OK") != 0) |
5088 | error (_("Remote refused setting all-stop mode with: %s"), | |
5089 | rs->buf.data ()); | |
74531fed PA |
5090 | } |
5091 | ||
a0743c90 YQ |
5092 | /* Upload TSVs regardless of whether the target is running or not. The |
5093 | remote stub, such as GDBserver, may have some predefined or builtin | |
5094 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 5095 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
5096 | { |
5097 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
5098 | ||
f6ac5f3d | 5099 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
5100 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
5101 | } | |
5102 | ||
2d717e4f DJ |
5103 | /* Check whether the target is running now. */ |
5104 | putpkt ("?"); | |
aa7b36b8 | 5105 | getpkt (&rs->buf); |
2d717e4f | 5106 | |
6efcd9a8 | 5107 | if (!target_is_non_stop_p ()) |
2d717e4f | 5108 | { |
b5c8f22d SM |
5109 | char *wait_status = NULL; |
5110 | ||
74531fed | 5111 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 5112 | { |
04bd08de | 5113 | if (!extended_p) |
74531fed | 5114 | error (_("The target is not running (try extended-remote?)")); |
288712bb | 5115 | return false; |
2d717e4f DJ |
5116 | } |
5117 | else | |
74531fed | 5118 | { |
74531fed | 5119 | /* Save the reply for later. */ |
8d64371b TT |
5120 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
5121 | strcpy (wait_status, rs->buf.data ()); | |
74531fed PA |
5122 | } |
5123 | ||
b7ea362b | 5124 | /* Fetch thread list. */ |
e8032dde | 5125 | target_update_thread_list (); |
b7ea362b | 5126 | |
74531fed PA |
5127 | /* Let the stub know that we want it to return the thread. */ |
5128 | set_continue_thread (minus_one_ptid); | |
5129 | ||
5b6d1e4f | 5130 | if (thread_count (this) == 0) |
b7ea362b PA |
5131 | { |
5132 | /* Target has no concept of threads at all. GDB treats | |
5133 | non-threaded target as single-threaded; add a main | |
5134 | thread. */ | |
64d38fdd JM |
5135 | thread_info *tp = add_current_inferior_and_thread (wait_status); |
5136 | get_remote_thread_info (tp)->set_resumed (); | |
b7ea362b PA |
5137 | } |
5138 | else | |
5139 | { | |
5140 | /* We have thread information; select the thread the target | |
5141 | says should be current. If we're reconnecting to a | |
5142 | multi-threaded program, this will ideally be the thread | |
5143 | that last reported an event before GDB disconnected. */ | |
75c6c844 PA |
5144 | ptid_t curr_thread = get_current_thread (wait_status); |
5145 | if (curr_thread == null_ptid) | |
b7ea362b PA |
5146 | { |
5147 | /* Odd... The target was able to list threads, but not | |
5148 | tell us which thread was current (no "thread" | |
5149 | register in T stop reply?). Just pick the first | |
5150 | thread in the thread list then. */ | |
2189c312 SM |
5151 | |
5152 | remote_debug_printf ("warning: couldn't determine remote " | |
5153 | "current thread; picking first in list."); | |
c9f35b34 | 5154 | |
5b6d1e4f PA |
5155 | for (thread_info *tp : all_non_exited_threads (this, |
5156 | minus_one_ptid)) | |
75c6c844 PA |
5157 | { |
5158 | switch_to_thread (tp); | |
5159 | break; | |
5160 | } | |
b7ea362b | 5161 | } |
75c6c844 | 5162 | else |
9213a6d7 | 5163 | switch_to_thread (this->find_thread (curr_thread)); |
b7ea362b | 5164 | } |
74531fed | 5165 | |
6e586cc5 YQ |
5166 | /* init_wait_for_inferior should be called before get_offsets in order |
5167 | to manage `inserted' flag in bp loc in a correct state. | |
5168 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
5169 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
5170 | start_remote, set `inserted' flag to 1. In the initialization of | |
5171 | inferior, breakpoint_init_inferior should be called first, and then | |
5172 | breakpoint_re_set can be called. If this order is broken, state of | |
5173 | `inserted' flag is wrong, and cause some problems on breakpoint | |
5174 | manipulation. */ | |
5175 | init_wait_for_inferior (); | |
5176 | ||
74531fed PA |
5177 | get_offsets (); /* Get text, data & bss offsets. */ |
5178 | ||
d962ef82 DJ |
5179 | /* If we could not find a description using qXfer, and we know |
5180 | how to do it some other way, try again. This is not | |
5181 | supported for non-stop; it could be, but it is tricky if | |
5182 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 5183 | if (remote_read_description_p (this) |
99d9c3b9 | 5184 | && gdbarch_target_desc (current_inferior ()->arch ()) == NULL) |
d962ef82 DJ |
5185 | { |
5186 | target_clear_description (); | |
5187 | target_find_description (); | |
5188 | } | |
5189 | ||
74531fed PA |
5190 | /* Use the previously fetched status. */ |
5191 | gdb_assert (wait_status != NULL); | |
4f626cad AB |
5192 | struct notif_event *reply |
5193 | = remote_notif_parse (this, ¬if_client_stop, wait_status); | |
5194 | push_stop_reply ((struct stop_reply *) reply); | |
74531fed | 5195 | |
f6ac5f3d | 5196 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
5197 | } |
5198 | else | |
5199 | { | |
68c97600 PA |
5200 | /* Clear WFI global state. Do this before finding about new |
5201 | threads and inferiors, and setting the current inferior. | |
5202 | Otherwise we would clear the proceed status of the current | |
5203 | inferior when we want its stop_soon state to be preserved | |
5204 | (see notice_new_inferior). */ | |
5205 | init_wait_for_inferior (); | |
5206 | ||
74531fed PA |
5207 | /* In non-stop, we will either get an "OK", meaning that there |
5208 | are no stopped threads at this time; or, a regular stop | |
5209 | reply. In the latter case, there may be more than one thread | |
5210 | stopped --- we pull them all out using the vStopped | |
5211 | mechanism. */ | |
8d64371b | 5212 | if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 5213 | { |
42938c1a | 5214 | const notif_client *notif = ¬if_client_stop; |
2d717e4f | 5215 | |
722247f1 YQ |
5216 | /* remote_notif_get_pending_replies acks this one, and gets |
5217 | the rest out. */ | |
f48ff2a7 | 5218 | rs->notif_state->pending_event[notif_client_stop.id] |
8d64371b | 5219 | = remote_notif_parse (this, notif, rs->buf.data ()); |
722247f1 | 5220 | remote_notif_get_pending_events (notif); |
74531fed | 5221 | } |
2d717e4f | 5222 | |
5b6d1e4f | 5223 | if (thread_count (this) == 0) |
74531fed | 5224 | { |
04bd08de | 5225 | if (!extended_p) |
74531fed | 5226 | error (_("The target is not running (try extended-remote?)")); |
288712bb | 5227 | return false; |
c35b1492 | 5228 | } |
74531fed | 5229 | |
2455069d | 5230 | /* Report all signals during attach/startup. */ |
adc6a863 | 5231 | pass_signals ({}); |
221e1a37 PA |
5232 | |
5233 | /* If there are already stopped threads, mark them stopped and | |
5234 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 5235 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
5236 | |
5237 | if (target_can_async_p ()) | |
4a570176 | 5238 | target_async (true); |
74531fed | 5239 | } |
c8d104ad | 5240 | |
901e4e8d SM |
5241 | /* Give the target a chance to look up symbols. */ |
5242 | for (inferior *inf : all_inferiors (this)) | |
c8d104ad | 5243 | { |
901e4e8d SM |
5244 | /* The inferiors that exist at this point were created from what |
5245 | was found already running on the remote side, so we know they | |
5246 | have execution. */ | |
5247 | gdb_assert (this->has_execution (inf)); | |
5248 | ||
a42d7dd8 | 5249 | /* No use without a symbol-file. */ |
901e4e8d SM |
5250 | if (inf->pspace->symfile_object_file == nullptr) |
5251 | continue; | |
5252 | ||
5253 | /* Need to switch to a specific thread, because remote_check_symbols | |
287de656 | 5254 | uses INFERIOR_PTID to set the general thread. */ |
901e4e8d SM |
5255 | scoped_restore_current_thread restore_thread; |
5256 | thread_info *thread = any_thread_of_inferior (inf); | |
5257 | switch_to_thread (thread); | |
5258 | this->remote_check_symbols (); | |
c8d104ad | 5259 | } |
50c71eaf | 5260 | |
d5551862 SS |
5261 | /* Possibly the target has been engaged in a trace run started |
5262 | previously; find out where things are at. */ | |
f6ac5f3d | 5263 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 5264 | { |
00bf0b85 | 5265 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 5266 | |
00bf0b85 | 5267 | if (current_trace_status ()->running) |
6cb06a8c | 5268 | gdb_printf (_("Trace is already running on the target.\n")); |
00bf0b85 | 5269 | |
f6ac5f3d | 5270 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
5271 | |
5272 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
5273 | } |
5274 | ||
c0272db5 TW |
5275 | /* Possibly the target has been engaged in a btrace record started |
5276 | previously; find out where things are at. */ | |
5277 | remote_btrace_maybe_reopen (); | |
5278 | ||
288712bb AB |
5279 | return true; |
5280 | } | |
5281 | ||
5282 | /* Start the remote connection and sync state. */ | |
1e51243a | 5283 | |
288712bb AB |
5284 | void |
5285 | remote_target::start_remote (int from_tty, int extended_p) | |
5286 | { | |
5287 | if (start_remote_1 (from_tty, extended_p) | |
5288 | && breakpoints_should_be_inserted_now ()) | |
50c71eaf | 5289 | insert_breakpoints (); |
c906108c SS |
5290 | } |
5291 | ||
121b3efd PA |
5292 | const char * |
5293 | remote_target::connection_string () | |
5294 | { | |
5295 | remote_state *rs = get_remote_state (); | |
5296 | ||
5297 | if (rs->remote_desc->name != NULL) | |
5298 | return rs->remote_desc->name; | |
5299 | else | |
5300 | return NULL; | |
5301 | } | |
5302 | ||
c906108c SS |
5303 | /* Open a connection to a remote debugger. |
5304 | NAME is the filename used for communication. */ | |
5305 | ||
f6ac5f3d PA |
5306 | void |
5307 | remote_target::open (const char *name, int from_tty) | |
c906108c | 5308 | { |
f6ac5f3d | 5309 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
5310 | } |
5311 | ||
c906108c SS |
5312 | /* Open a connection to a remote debugger using the extended |
5313 | remote gdb protocol. NAME is the filename used for communication. */ | |
5314 | ||
f6ac5f3d PA |
5315 | void |
5316 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 5317 | { |
f6ac5f3d | 5318 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
5319 | } |
5320 | ||
ff52c073 CS |
5321 | void |
5322 | remote_features::reset_all_packet_configs_support () | |
d471ea57 AC |
5323 | { |
5324 | int i; | |
a744cf53 | 5325 | |
444abaca | 5326 | for (i = 0; i < PACKET_MAX; i++) |
ff52c073 | 5327 | m_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
5328 | } |
5329 | ||
ca4f7f8b PA |
5330 | /* Initialize all packet configs. */ |
5331 | ||
5332 | static void | |
5333 | init_all_packet_configs (void) | |
5334 | { | |
5335 | int i; | |
5336 | ||
5337 | for (i = 0; i < PACKET_MAX; i++) | |
5338 | { | |
5339 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
5340 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
5341 | } | |
5342 | } | |
5343 | ||
23860348 | 5344 | /* Symbol look-up. */ |
dc8acb97 | 5345 | |
6b8edb51 PA |
5346 | void |
5347 | remote_target::remote_check_symbols () | |
dc8acb97 | 5348 | { |
8d64371b | 5349 | char *tmp; |
dc8acb97 MS |
5350 | int end; |
5351 | ||
06c7226e SM |
5352 | /* It doesn't make sense to send a qSymbol packet for an inferior that |
5353 | doesn't have execution, because the remote side doesn't know about | |
5354 | inferiors without execution. */ | |
5355 | gdb_assert (target_has_execution ()); | |
63154eca | 5356 | |
ff52c073 | 5357 | if (m_features.packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
5358 | return; |
5359 | ||
63154eca PA |
5360 | /* Make sure the remote is pointing at the right process. Note |
5361 | there's no way to select "no process". */ | |
3c9c4b83 PA |
5362 | set_general_process (); |
5363 | ||
6d820c5c DJ |
5364 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
5365 | because we need both at the same time. */ | |
66644cd3 | 5366 | gdb::char_vector msg (get_remote_packet_size ()); |
8d64371b | 5367 | gdb::char_vector reply (get_remote_packet_size ()); |
6d820c5c | 5368 | |
23860348 | 5369 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
5370 | |
5371 | putpkt ("qSymbol::"); | |
aa7b36b8 | 5372 | getpkt (&reply); |
ff52c073 | 5373 | m_features.packet_ok (reply, PACKET_qSymbol); |
dc8acb97 | 5374 | |
8d64371b | 5375 | while (startswith (reply.data (), "qSymbol:")) |
dc8acb97 | 5376 | { |
77e371c0 TT |
5377 | struct bound_minimal_symbol sym; |
5378 | ||
dc8acb97 | 5379 | tmp = &reply[8]; |
66644cd3 AB |
5380 | end = hex2bin (tmp, reinterpret_cast <gdb_byte *> (msg.data ()), |
5381 | strlen (tmp) / 2); | |
dc8acb97 | 5382 | msg[end] = '\0'; |
66644cd3 | 5383 | sym = lookup_minimal_symbol (msg.data (), NULL, NULL); |
3b7344d5 | 5384 | if (sym.minsym == NULL) |
66644cd3 AB |
5385 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol::%s", |
5386 | &reply[8]); | |
dc8acb97 | 5387 | else |
2bbe3cc1 | 5388 | { |
99d9c3b9 | 5389 | int addr_size = gdbarch_addr_bit (current_inferior ()->arch ()) / 8; |
4aeddc50 | 5390 | CORE_ADDR sym_addr = sym.value_address (); |
2bbe3cc1 DJ |
5391 | |
5392 | /* If this is a function address, return the start of code | |
5393 | instead of any data function descriptor. */ | |
328d42d8 | 5394 | sym_addr = gdbarch_convert_from_func_ptr_addr |
99d9c3b9 SM |
5395 | (current_inferior ()->arch (), sym_addr, |
5396 | current_inferior ()->top_target ()); | |
2bbe3cc1 | 5397 | |
66644cd3 | 5398 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol:%s:%s", |
5af949e3 | 5399 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 | 5400 | } |
66644cd3 AB |
5401 | |
5402 | putpkt (msg.data ()); | |
aa7b36b8 | 5403 | getpkt (&reply); |
dc8acb97 MS |
5404 | } |
5405 | } | |
5406 | ||
9db8d71f | 5407 | static struct serial * |
baa336ce | 5408 | remote_serial_open (const char *name) |
9db8d71f DJ |
5409 | { |
5410 | static int udp_warning = 0; | |
5411 | ||
5412 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
5413 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
5414 | serial connection is reliable and not the serial connection promising | |
5415 | to be. */ | |
61012eef | 5416 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 5417 | { |
3e43a32a MS |
5418 | warning (_("The remote protocol may be unreliable over UDP.\n" |
5419 | "Some events may be lost, rendering further debugging " | |
5420 | "impossible.")); | |
9db8d71f DJ |
5421 | udp_warning = 1; |
5422 | } | |
5423 | ||
5424 | return serial_open (name); | |
5425 | } | |
5426 | ||
d914c394 SS |
5427 | /* Inform the target of our permission settings. The permission flags |
5428 | work without this, but if the target knows the settings, it can do | |
5429 | a couple things. First, it can add its own check, to catch cases | |
5430 | that somehow manage to get by the permissions checks in target | |
5431 | methods. Second, if the target is wired to disallow particular | |
5432 | settings (for instance, a system in the field that is not set up to | |
5433 | be able to stop at a breakpoint), it can object to any unavailable | |
5434 | permissions. */ | |
5435 | ||
5436 | void | |
f6ac5f3d | 5437 | remote_target::set_permissions () |
d914c394 SS |
5438 | { |
5439 | struct remote_state *rs = get_remote_state (); | |
5440 | ||
8d64371b | 5441 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAllow:" |
bba74b36 YQ |
5442 | "WriteReg:%x;WriteMem:%x;" |
5443 | "InsertBreak:%x;InsertTrace:%x;" | |
5444 | "InsertFastTrace:%x;Stop:%x", | |
5445 | may_write_registers, may_write_memory, | |
5446 | may_insert_breakpoints, may_insert_tracepoints, | |
5447 | may_insert_fast_tracepoints, may_stop); | |
d914c394 | 5448 | putpkt (rs->buf); |
aa7b36b8 | 5449 | getpkt (&rs->buf); |
d914c394 SS |
5450 | |
5451 | /* If the target didn't like the packet, warn the user. Do not try | |
5452 | to undo the user's settings, that would just be maddening. */ | |
8d64371b TT |
5453 | if (strcmp (rs->buf.data (), "OK") != 0) |
5454 | warning (_("Remote refused setting permissions with: %s"), | |
5455 | rs->buf.data ()); | |
d914c394 SS |
5456 | } |
5457 | ||
be2a5f71 DJ |
5458 | /* This type describes each known response to the qSupported |
5459 | packet. */ | |
5460 | struct protocol_feature | |
5461 | { | |
5462 | /* The name of this protocol feature. */ | |
5463 | const char *name; | |
5464 | ||
5465 | /* The default for this protocol feature. */ | |
5466 | enum packet_support default_support; | |
5467 | ||
5468 | /* The function to call when this feature is reported, or after | |
5469 | qSupported processing if the feature is not supported. | |
5470 | The first argument points to this structure. The second | |
5471 | argument indicates whether the packet requested support be | |
5472 | enabled, disabled, or probed (or the default, if this function | |
5473 | is being called at the end of processing and this feature was | |
5474 | not reported). The third argument may be NULL; if not NULL, it | |
5475 | is a NUL-terminated string taken from the packet following | |
5476 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5477 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5478 | enum packet_support, const char *); | |
be2a5f71 DJ |
5479 | |
5480 | /* The corresponding packet for this feature. Only used if | |
5481 | FUNC is remote_supported_packet. */ | |
5482 | int packet; | |
5483 | }; | |
5484 | ||
be2a5f71 | 5485 | static void |
6b8edb51 PA |
5486 | remote_supported_packet (remote_target *remote, |
5487 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5488 | enum packet_support support, |
5489 | const char *argument) | |
5490 | { | |
5491 | if (argument) | |
5492 | { | |
5493 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5494 | " \"%s\"."), feature->name); | |
5495 | return; | |
5496 | } | |
5497 | ||
ff52c073 | 5498 | remote->m_features.m_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5499 | } |
be2a5f71 | 5500 | |
6b8edb51 PA |
5501 | void |
5502 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5503 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5504 | { |
5505 | struct remote_state *rs = get_remote_state (); | |
5506 | ||
5507 | int packet_size; | |
5508 | char *value_end; | |
5509 | ||
5510 | if (support != PACKET_ENABLE) | |
5511 | return; | |
5512 | ||
5513 | if (value == NULL || *value == '\0') | |
5514 | { | |
5515 | warning (_("Remote target reported \"%s\" without a size."), | |
5516 | feature->name); | |
5517 | return; | |
5518 | } | |
5519 | ||
5520 | errno = 0; | |
5521 | packet_size = strtol (value, &value_end, 16); | |
5522 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5523 | { | |
5524 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5525 | feature->name, value); | |
5526 | return; | |
5527 | } | |
5528 | ||
be2a5f71 DJ |
5529 | /* Record the new maximum packet size. */ |
5530 | rs->explicit_packet_size = packet_size; | |
5531 | } | |
5532 | ||
cb8c24b6 | 5533 | static void |
6b8edb51 PA |
5534 | remote_packet_size (remote_target *remote, const protocol_feature *feature, |
5535 | enum packet_support support, const char *value) | |
5536 | { | |
5537 | remote->remote_packet_size (feature, support, value); | |
5538 | } | |
5539 | ||
dc473cfb | 5540 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5541 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5542 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5543 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5544 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5545 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5546 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5547 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5548 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5549 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5550 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5551 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5552 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5553 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5554 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5555 | PACKET_qXfer_memory_map }, |
07e059b5 VP |
5556 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5557 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5558 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5559 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5560 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5561 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5562 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5563 | PACKET_QPassSignals }, | |
82075af2 JS |
5564 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5565 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5566 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5567 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5568 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5569 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5570 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5571 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5572 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5573 | PACKET_QEnvironmentHexEncoded }, | |
5574 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5575 | PACKET_QEnvironmentReset }, | |
5576 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5577 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5578 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5579 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5580 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5581 | PACKET_multiprocess_feature }, | |
5582 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5583 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5584 | PACKET_qXfer_siginfo_read }, | |
5585 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5586 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5587 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5588 | PACKET_ConditionalTracepoints }, |
4082afcc | 5589 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5590 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5591 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5592 | PACKET_BreakpointCommands }, |
4082afcc | 5593 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5594 | PACKET_FastTracepoints }, |
4082afcc | 5595 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5596 | PACKET_StaticTracepoints }, |
4082afcc | 5597 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5598 | PACKET_InstallInTrace}, |
4082afcc PA |
5599 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5600 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5601 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5602 | PACKET_bc }, | |
5603 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5604 | PACKET_bs }, | |
409873ef SS |
5605 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5606 | PACKET_TracepointSource }, | |
d914c394 SS |
5607 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5608 | PACKET_QAllow }, | |
4082afcc PA |
5609 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5610 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5611 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5612 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5613 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5614 | PACKET_qXfer_uib }, | |
03583c20 UW |
5615 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5616 | PACKET_QDisableRandomization }, | |
d1feda86 | 5617 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5618 | { "QTBuffer:size", PACKET_DISABLE, |
5619 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5620 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5621 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5622 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5623 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5624 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5625 | PACKET_qXfer_btrace }, |
5626 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5627 | PACKET_qXfer_btrace_conf }, |
5628 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5629 | PACKET_Qbtrace_conf_bts_size }, |
5630 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5631 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5632 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5633 | PACKET_fork_event_feature }, | |
5634 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5635 | PACKET_vfork_event_feature }, | |
94585166 DB |
5636 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5637 | PACKET_exec_event_feature }, | |
b20a6524 | 5638 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5639 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5640 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5641 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5642 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
2c2e7f87 LM |
5643 | { "memory-tagging", PACKET_DISABLE, remote_supported_packet, |
5644 | PACKET_memory_tagging_feature }, | |
be2a5f71 DJ |
5645 | }; |
5646 | ||
c8d5aac9 L |
5647 | static char *remote_support_xml; |
5648 | ||
5649 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5650 | ||
5651 | void | |
6e39997a | 5652 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5653 | { |
5654 | #if defined(HAVE_LIBEXPAT) | |
5655 | if (remote_support_xml == NULL) | |
c4f7c687 | 5656 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5657 | else |
5658 | { | |
5659 | char *copy = xstrdup (remote_support_xml + 13); | |
ca3a04f6 CB |
5660 | char *saveptr; |
5661 | char *p = strtok_r (copy, ",", &saveptr); | |
c8d5aac9 L |
5662 | |
5663 | do | |
5664 | { | |
5665 | if (strcmp (p, xml) == 0) | |
5666 | { | |
5667 | /* already there */ | |
5668 | xfree (copy); | |
5669 | return; | |
5670 | } | |
5671 | } | |
ca3a04f6 | 5672 | while ((p = strtok_r (NULL, ",", &saveptr)) != NULL); |
c8d5aac9 L |
5673 | xfree (copy); |
5674 | ||
94b0dee1 PA |
5675 | remote_support_xml = reconcat (remote_support_xml, |
5676 | remote_support_xml, ",", xml, | |
5677 | (char *) NULL); | |
c8d5aac9 L |
5678 | } |
5679 | #endif | |
5680 | } | |
5681 | ||
69b6ecb0 TT |
5682 | static void |
5683 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5684 | { |
69b6ecb0 TT |
5685 | if (!msg->empty ()) |
5686 | msg->append (";"); | |
5687 | msg->append (append); | |
c8d5aac9 L |
5688 | } |
5689 | ||
6b8edb51 PA |
5690 | void |
5691 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5692 | { |
5693 | struct remote_state *rs = get_remote_state (); | |
5694 | char *next; | |
5695 | int i; | |
5696 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5697 | ||
5698 | /* The packet support flags are handled differently for this packet | |
5699 | than for most others. We treat an error, a disabled packet, and | |
5700 | an empty response identically: any features which must be reported | |
5701 | to be used will be automatically disabled. An empty buffer | |
5702 | accomplishes this, since that is also the representation for a list | |
5703 | containing no features. */ | |
5704 | ||
5705 | rs->buf[0] = 0; | |
ff52c073 | 5706 | if (m_features.packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5707 | { |
69b6ecb0 | 5708 | std::string q; |
c8d5aac9 | 5709 | |
ff52c073 CS |
5710 | if (m_features.packet_set_cmd_state (PACKET_multiprocess_feature) |
5711 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5712 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5713 | |
ff52c073 CS |
5714 | if (m_features.packet_set_cmd_state (PACKET_swbreak_feature) |
5715 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5716 | remote_query_supported_append (&q, "swbreak+"); |
ff52c073 CS |
5717 | |
5718 | if (m_features.packet_set_cmd_state (PACKET_hwbreak_feature) | |
5719 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5720 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5721 | |
69b6ecb0 | 5722 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5723 | |
ff52c073 | 5724 | if (m_features.packet_set_cmd_state (PACKET_fork_event_feature) |
8020350c | 5725 | != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5726 | remote_query_supported_append (&q, "fork-events+"); |
ff52c073 CS |
5727 | |
5728 | if (m_features.packet_set_cmd_state (PACKET_vfork_event_feature) | |
8020350c | 5729 | != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5730 | remote_query_supported_append (&q, "vfork-events+"); |
ff52c073 CS |
5731 | |
5732 | if (m_features.packet_set_cmd_state (PACKET_exec_event_feature) | |
8020350c | 5733 | != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5734 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5735 | |
ff52c073 CS |
5736 | if (m_features.packet_set_cmd_state (PACKET_vContSupported) |
5737 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5738 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5739 | |
ff52c073 CS |
5740 | if (m_features.packet_set_cmd_state (PACKET_QThreadEvents) |
5741 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5742 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5743 | |
ff52c073 CS |
5744 | if (m_features.packet_set_cmd_state (PACKET_no_resumed) |
5745 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5746 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5747 | |
ff52c073 | 5748 | if (m_features.packet_set_cmd_state (PACKET_memory_tagging_feature) |
2c2e7f87 LM |
5749 | != AUTO_BOOLEAN_FALSE) |
5750 | remote_query_supported_append (&q, "memory-tagging+"); | |
5751 | ||
b35d5edb PA |
5752 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5753 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de | 5754 | if (remote_support_xml != NULL |
ff52c073 CS |
5755 | && (m_features.packet_support (PACKET_qXfer_features) |
5756 | != PACKET_DISABLE)) | |
69b6ecb0 | 5757 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5758 | |
69b6ecb0 TT |
5759 | q = "qSupported:" + q; |
5760 | putpkt (q.c_str ()); | |
94b0dee1 | 5761 | |
aa7b36b8 | 5762 | getpkt (&rs->buf); |
be2a5f71 | 5763 | |
33b5899f | 5764 | /* If an error occurred, warn, but do not return - just reset the |
be2a5f71 | 5765 | buffer to empty and go on to disable features. */ |
ff52c073 | 5766 | if (m_features.packet_ok (rs->buf, PACKET_qSupported) == PACKET_ERROR) |
be2a5f71 | 5767 | { |
8d64371b | 5768 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
be2a5f71 DJ |
5769 | rs->buf[0] = 0; |
5770 | } | |
5771 | } | |
5772 | ||
5773 | memset (seen, 0, sizeof (seen)); | |
5774 | ||
8d64371b | 5775 | next = rs->buf.data (); |
be2a5f71 DJ |
5776 | while (*next) |
5777 | { | |
5778 | enum packet_support is_supported; | |
5779 | char *p, *end, *name_end, *value; | |
5780 | ||
5781 | /* First separate out this item from the rest of the packet. If | |
5782 | there's another item after this, we overwrite the separator | |
5783 | (terminated strings are much easier to work with). */ | |
5784 | p = next; | |
5785 | end = strchr (p, ';'); | |
5786 | if (end == NULL) | |
5787 | { | |
5788 | end = p + strlen (p); | |
5789 | next = end; | |
5790 | } | |
5791 | else | |
5792 | { | |
89be2091 DJ |
5793 | *end = '\0'; |
5794 | next = end + 1; | |
5795 | ||
be2a5f71 DJ |
5796 | if (end == p) |
5797 | { | |
5798 | warning (_("empty item in \"qSupported\" response")); | |
5799 | continue; | |
5800 | } | |
be2a5f71 DJ |
5801 | } |
5802 | ||
5803 | name_end = strchr (p, '='); | |
5804 | if (name_end) | |
5805 | { | |
5806 | /* This is a name=value entry. */ | |
5807 | is_supported = PACKET_ENABLE; | |
5808 | value = name_end + 1; | |
5809 | *name_end = '\0'; | |
5810 | } | |
5811 | else | |
5812 | { | |
5813 | value = NULL; | |
5814 | switch (end[-1]) | |
5815 | { | |
5816 | case '+': | |
5817 | is_supported = PACKET_ENABLE; | |
5818 | break; | |
5819 | ||
5820 | case '-': | |
5821 | is_supported = PACKET_DISABLE; | |
5822 | break; | |
5823 | ||
5824 | case '?': | |
5825 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5826 | break; | |
5827 | ||
5828 | default: | |
3e43a32a MS |
5829 | warning (_("unrecognized item \"%s\" " |
5830 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5831 | continue; |
5832 | } | |
5833 | end[-1] = '\0'; | |
5834 | } | |
5835 | ||
5836 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5837 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5838 | { | |
5839 | const struct protocol_feature *feature; | |
5840 | ||
5841 | seen[i] = 1; | |
5842 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5843 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5844 | break; |
5845 | } | |
5846 | } | |
5847 | ||
5848 | /* If we increased the packet size, make sure to increase the global | |
5849 | buffer size also. We delay this until after parsing the entire | |
5850 | qSupported packet, because this is the same buffer we were | |
5851 | parsing. */ | |
8d64371b TT |
5852 | if (rs->buf.size () < rs->explicit_packet_size) |
5853 | rs->buf.resize (rs->explicit_packet_size); | |
be2a5f71 DJ |
5854 | |
5855 | /* Handle the defaults for unmentioned features. */ | |
5856 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5857 | if (!seen[i]) | |
5858 | { | |
5859 | const struct protocol_feature *feature; | |
5860 | ||
5861 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5862 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5863 | } |
5864 | } | |
5865 | ||
048094ac PA |
5866 | /* Serial QUIT handler for the remote serial descriptor. |
5867 | ||
5868 | Defers handling a Ctrl-C until we're done with the current | |
5869 | command/response packet sequence, unless: | |
5870 | ||
5871 | - We're setting up the connection. Don't send a remote interrupt | |
5872 | request, as we're not fully synced yet. Quit immediately | |
5873 | instead. | |
5874 | ||
5875 | - The target has been resumed in the foreground | |
223ffa71 | 5876 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5877 | packet, and we're blocked waiting for the stop reply, thus a |
5878 | Ctrl-C should be immediately sent to the target. | |
5879 | ||
5880 | - We get a second Ctrl-C while still within the same serial read or | |
5881 | write. In that case the serial is seemingly wedged --- offer to | |
5882 | quit/disconnect. | |
5883 | ||
5884 | - We see a second Ctrl-C without target response, after having | |
5885 | previously interrupted the target. In that case the target/stub | |
5886 | is probably wedged --- offer to quit/disconnect. | |
5887 | */ | |
5888 | ||
6b8edb51 PA |
5889 | void |
5890 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5891 | { |
5892 | struct remote_state *rs = get_remote_state (); | |
5893 | ||
5894 | if (check_quit_flag ()) | |
5895 | { | |
5896 | /* If we're starting up, we're not fully synced yet. Quit | |
5897 | immediately. */ | |
5898 | if (rs->starting_up) | |
5899 | quit (); | |
5900 | else if (rs->got_ctrlc_during_io) | |
5901 | { | |
5902 | if (query (_("The target is not responding to GDB commands.\n" | |
5903 | "Stop debugging it? "))) | |
5b6d1e4f | 5904 | remote_unpush_and_throw (this); |
048094ac PA |
5905 | } |
5906 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5907 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5908 | interrupt_query (); |
5909 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5910 | an interrupt request. */ | |
223ffa71 | 5911 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5912 | target_interrupt (); |
048094ac PA |
5913 | else |
5914 | rs->got_ctrlc_during_io = 1; | |
5915 | } | |
5916 | } | |
5917 | ||
6b8edb51 PA |
5918 | /* The remote_target that is current while the quit handler is |
5919 | overridden with remote_serial_quit_handler. */ | |
5920 | static remote_target *curr_quit_handler_target; | |
5921 | ||
5922 | static void | |
5923 | remote_serial_quit_handler () | |
5924 | { | |
5925 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5926 | } | |
5927 | ||
5b6d1e4f PA |
5928 | /* Remove the remote target from the target stack of each inferior |
5929 | that is using it. Upper targets depend on it so remove them | |
5930 | first. */ | |
78a095c3 JK |
5931 | |
5932 | static void | |
5b6d1e4f | 5933 | remote_unpush_target (remote_target *target) |
78a095c3 | 5934 | { |
5b6d1e4f PA |
5935 | /* We have to unpush the target from all inferiors, even those that |
5936 | aren't running. */ | |
5937 | scoped_restore_current_inferior restore_current_inferior; | |
5938 | ||
5939 | for (inferior *inf : all_inferiors (target)) | |
5940 | { | |
5941 | switch_to_inferior_no_thread (inf); | |
c8181f70 | 5942 | inf->pop_all_targets_at_and_above (process_stratum); |
5b6d1e4f PA |
5943 | generic_mourn_inferior (); |
5944 | } | |
d7cb0ef3 PA |
5945 | |
5946 | /* Don't rely on target_close doing this when the target is popped | |
5947 | from the last remote inferior above, because something may be | |
5948 | holding a reference to the target higher up on the stack, meaning | |
5949 | target_close won't be called yet. We lost the connection to the | |
5950 | target, so clear these now, otherwise we may later throw | |
5951 | TARGET_CLOSE_ERROR while trying to tell the remote target to | |
5952 | close the file. */ | |
5953 | fileio_handles_invalidate_target (target); | |
78a095c3 | 5954 | } |
be2a5f71 | 5955 | |
048094ac | 5956 | static void |
5b6d1e4f | 5957 | remote_unpush_and_throw (remote_target *target) |
048094ac | 5958 | { |
5b6d1e4f | 5959 | remote_unpush_target (target); |
048094ac PA |
5960 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
5961 | } | |
5962 | ||
f6ac5f3d PA |
5963 | void |
5964 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5965 | { |
6b8edb51 | 5966 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5967 | |
c906108c | 5968 | if (name == 0) |
8a3fe4f8 | 5969 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5970 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5971 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5972 | |
2d717e4f | 5973 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5974 | Ask this question first, before target_preopen has a chance to kill |
5975 | anything. */ | |
55f6301a | 5976 | if (curr_remote != NULL && !target_has_execution ()) |
2d717e4f | 5977 | { |
78a095c3 JK |
5978 | if (from_tty |
5979 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5980 | error (_("Still connected.")); |
5981 | } | |
5982 | ||
78a095c3 | 5983 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5984 | target_preopen (from_tty); |
5985 | ||
ad9a8f3f | 5986 | remote_fileio_reset (); |
1dd41f16 | 5987 | reopen_exec_file (); |
9dec38d3 | 5988 | reread_symbols (from_tty); |
1dd41f16 | 5989 | |
6b8edb51 PA |
5990 | remote_target *remote |
5991 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5992 | target_ops_up target_holder (remote); | |
5993 | ||
5994 | remote_state *rs = remote->get_remote_state (); | |
5995 | ||
5996 | /* See FIXME above. */ | |
5997 | if (!target_async_permitted) | |
8756b726 | 5998 | rs->wait_forever_enabled_p = true; |
6b8edb51 | 5999 | |
5d93a237 TT |
6000 | rs->remote_desc = remote_serial_open (name); |
6001 | if (!rs->remote_desc) | |
c906108c SS |
6002 | perror_with_name (name); |
6003 | ||
6004 | if (baud_rate != -1) | |
6005 | { | |
5d93a237 | 6006 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 6007 | { |
9b74d5d3 KB |
6008 | /* The requested speed could not be set. Error out to |
6009 | top level after closing remote_desc. Take care to | |
6010 | set remote_desc to NULL to avoid closing remote_desc | |
6011 | more than once. */ | |
5d93a237 TT |
6012 | serial_close (rs->remote_desc); |
6013 | rs->remote_desc = NULL; | |
c906108c SS |
6014 | perror_with_name (name); |
6015 | } | |
6016 | } | |
6017 | ||
236af5e3 | 6018 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 6019 | serial_raw (rs->remote_desc); |
c906108c SS |
6020 | |
6021 | /* If there is something sitting in the buffer we might take it as a | |
6022 | response to a command, which would be bad. */ | |
5d93a237 | 6023 | serial_flush_input (rs->remote_desc); |
c906108c SS |
6024 | |
6025 | if (from_tty) | |
6026 | { | |
0426ad51 TT |
6027 | gdb_puts ("Remote debugging using "); |
6028 | gdb_puts (name); | |
6029 | gdb_puts ("\n"); | |
c906108c | 6030 | } |
d9f719f1 | 6031 | |
6b8edb51 | 6032 | /* Switch to using the remote target now. */ |
02980c56 | 6033 | current_inferior ()->push_target (std::move (target_holder)); |
c906108c | 6034 | |
74531fed | 6035 | /* Register extra event sources in the event loop. */ |
92b98b37 SM |
6036 | rs->create_async_event_handler (); |
6037 | ||
6b8edb51 | 6038 | rs->notif_state = remote_notif_state_allocate (remote); |
74531fed | 6039 | |
be2a5f71 DJ |
6040 | /* Reset the target state; these things will be queried either by |
6041 | remote_query_supported or as they are needed. */ | |
ff52c073 | 6042 | remote->m_features.reset_all_packet_configs_support (); |
be2a5f71 | 6043 | rs->explicit_packet_size = 0; |
a6f3e723 | 6044 | rs->noack_mode = 0; |
82f73884 | 6045 | rs->extended = extended_p; |
e24a49d8 | 6046 | rs->waiting_for_stop_reply = 0; |
3a29589a | 6047 | rs->ctrlc_pending_p = 0; |
048094ac | 6048 | rs->got_ctrlc_during_io = 0; |
802188a7 | 6049 | |
47f8a51d TT |
6050 | rs->general_thread = not_sent_ptid; |
6051 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 6052 | rs->remote_traceframe_number = -1; |
c906108c | 6053 | |
3a00c802 PA |
6054 | rs->last_resume_exec_dir = EXEC_FORWARD; |
6055 | ||
9d1f7ab2 | 6056 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
6057 | rs->use_threadinfo_query = 1; |
6058 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 6059 | |
dd194f6b | 6060 | rs->readahead_cache.invalidate (); |
80152258 | 6061 | |
c6ebd6cf | 6062 | if (target_async_permitted) |
92d1e331 | 6063 | { |
92d1e331 DJ |
6064 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
6065 | assumed that the target is already ready and able to respond to | |
0df8b418 | 6066 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 6067 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 6068 | around this. Eventually a mechanism that allows |
92d1e331 | 6069 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 6070 | implemented. */ |
8756b726 | 6071 | rs->wait_forever_enabled_p = false; |
92d1e331 DJ |
6072 | } |
6073 | ||
23860348 | 6074 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 6075 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 6076 | |
36918e70 | 6077 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
6078 | target (we'd otherwise be in an inconsistent state) and then |
6079 | propogate the error on up the exception chain. This ensures that | |
6080 | the caller doesn't stumble along blindly assuming that the | |
6081 | function succeeded. The CLI doesn't have this problem but other | |
6082 | UI's, such as MI do. | |
36918e70 AC |
6083 | |
6084 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
6085 | this function should return an error indication letting the | |
ce2826aa | 6086 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
6087 | ``target remote'' is directly wired to this function making that |
6088 | impossible. On a positive note, the CLI side of this problem has | |
6089 | been fixed - the function set_cmd_context() makes it possible for | |
6090 | all the ``target ....'' commands to share a common callback | |
6091 | function. See cli-dump.c. */ | |
109c3e39 | 6092 | { |
2d717e4f | 6093 | |
a70b8144 | 6094 | try |
04bd08de | 6095 | { |
6b8edb51 | 6096 | remote->start_remote (from_tty, extended_p); |
04bd08de | 6097 | } |
230d2906 | 6098 | catch (const gdb_exception &ex) |
109c3e39 | 6099 | { |
c8d104ad PA |
6100 | /* Pop the partially set up target - unless something else did |
6101 | already before throwing the exception. */ | |
6b8edb51 | 6102 | if (ex.error != TARGET_CLOSE_ERROR) |
5b6d1e4f | 6103 | remote_unpush_target (remote); |
eedc3f4f | 6104 | throw; |
109c3e39 AC |
6105 | } |
6106 | } | |
c906108c | 6107 | |
6b8edb51 | 6108 | remote_btrace_reset (rs); |
f4abbc16 | 6109 | |
c6ebd6cf | 6110 | if (target_async_permitted) |
8756b726 | 6111 | rs->wait_forever_enabled_p = true; |
43ff13b4 JM |
6112 | } |
6113 | ||
28561a65 | 6114 | /* Determine if WS represents a fork status. */ |
a4543480 | 6115 | |
28561a65 SM |
6116 | static bool |
6117 | is_fork_status (target_waitkind kind) | |
a4543480 | 6118 | { |
28561a65 SM |
6119 | return (kind == TARGET_WAITKIND_FORKED |
6120 | || kind == TARGET_WAITKIND_VFORKED); | |
a4543480 SM |
6121 | } |
6122 | ||
28561a65 SM |
6123 | /* Return THREAD's pending status if it is a pending fork parent, else |
6124 | return nullptr. */ | |
a4543480 | 6125 | |
28561a65 | 6126 | static const target_waitstatus * |
a4543480 SM |
6127 | thread_pending_fork_status (struct thread_info *thread) |
6128 | { | |
28561a65 SM |
6129 | const target_waitstatus &ws |
6130 | = (thread->has_pending_waitstatus () | |
6131 | ? thread->pending_waitstatus () | |
6132 | : thread->pending_follow); | |
a4543480 | 6133 | |
28561a65 SM |
6134 | if (!is_fork_status (ws.kind ())) |
6135 | return nullptr; | |
a4543480 | 6136 | |
28561a65 | 6137 | return &ws; |
a4543480 SM |
6138 | } |
6139 | ||
de0d863e DB |
6140 | /* Detach the specified process. */ |
6141 | ||
6b8edb51 PA |
6142 | void |
6143 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
6144 | { |
6145 | struct remote_state *rs = get_remote_state (); | |
6146 | ||
4c7333b3 PA |
6147 | /* This should not be necessary, but the handling for D;PID in |
6148 | GDBserver versions prior to 8.2 incorrectly assumes that the | |
6149 | selected process points to the same process we're detaching, | |
6150 | leading to misbehavior (and possibly GDBserver crashing) when it | |
6151 | does not. Since it's easy and cheap, work around it by forcing | |
6152 | GDBserver to select GDB's current process. */ | |
6153 | set_general_process (); | |
6154 | ||
ff52c073 | 6155 | if (m_features.remote_multi_process_p ()) |
8d64371b | 6156 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "D;%x", pid); |
de0d863e | 6157 | else |
8d64371b | 6158 | strcpy (rs->buf.data (), "D"); |
de0d863e DB |
6159 | |
6160 | putpkt (rs->buf); | |
aa7b36b8 | 6161 | getpkt (&rs->buf); |
de0d863e DB |
6162 | |
6163 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
6164 | ; | |
6165 | else if (rs->buf[0] == '\0') | |
6166 | error (_("Remote doesn't know how to detach")); | |
6167 | else | |
6168 | error (_("Can't detach process.")); | |
6169 | } | |
6170 | ||
6171 | /* This detaches a program to which we previously attached, using | |
6172 | inferior_ptid to identify the process. After this is done, GDB | |
6173 | can be used to debug some other program. We better not have left | |
6174 | any breakpoints in the target program or it'll die when it hits | |
6175 | one. */ | |
c906108c | 6176 | |
6b8edb51 | 6177 | void |
00431a78 | 6178 | remote_target::remote_detach_1 (inferior *inf, int from_tty) |
c906108c | 6179 | { |
e99b03dc | 6180 | int pid = inferior_ptid.pid (); |
d01949b6 | 6181 | struct remote_state *rs = get_remote_state (); |
de0d863e | 6182 | int is_fork_parent; |
c906108c | 6183 | |
55f6301a | 6184 | if (!target_has_execution ()) |
2d717e4f DJ |
6185 | error (_("No process to detach from.")); |
6186 | ||
0f48b757 | 6187 | target_announce_detach (from_tty); |
7cee1e54 | 6188 | |
99d9c3b9 | 6189 | if (!gdbarch_has_global_breakpoints (current_inferior ()->arch ())) |
e87f0fe8 PA |
6190 | { |
6191 | /* If we're in breakpoints-always-inserted mode, or the inferior | |
6192 | is running, we have to remove breakpoints before detaching. | |
6193 | We don't do this in common code instead because not all | |
6194 | targets support removing breakpoints while the target is | |
6195 | running. The remote target / gdbserver does, though. */ | |
6196 | remove_breakpoints_inf (current_inferior ()); | |
6197 | } | |
6198 | ||
c906108c | 6199 | /* Tell the remote target to detach. */ |
de0d863e | 6200 | remote_detach_pid (pid); |
82f73884 | 6201 | |
8020350c | 6202 | /* Exit only if this is the only active inferior. */ |
5b6d1e4f | 6203 | if (from_tty && !rs->extended && number_of_live_inferiors (this) == 1) |
0426ad51 | 6204 | gdb_puts (_("Ending remote debugging.\n")); |
82f73884 | 6205 | |
df5ad102 SM |
6206 | /* See if any thread of the inferior we are detaching has a pending fork |
6207 | status. In that case, we must detach from the child resulting from | |
6208 | that fork. */ | |
6209 | for (thread_info *thread : inf->non_exited_threads ()) | |
6210 | { | |
6211 | const target_waitstatus *ws = thread_pending_fork_status (thread); | |
6212 | ||
6213 | if (ws == nullptr) | |
6214 | continue; | |
6215 | ||
6216 | remote_detach_pid (ws->child_ptid ().pid ()); | |
6217 | } | |
6218 | ||
6219 | /* Check also for any pending fork events in the stop reply queue. */ | |
6220 | remote_notif_get_pending_events (¬if_client_stop); | |
6221 | for (stop_reply_up &reply : rs->stop_reply_queue) | |
6222 | { | |
6223 | if (reply->ptid.pid () != pid) | |
6224 | continue; | |
6225 | ||
6226 | if (!is_fork_status (reply->ws.kind ())) | |
6227 | continue; | |
6228 | ||
6229 | remote_detach_pid (reply->ws.child_ptid ().pid ()); | |
6230 | } | |
6231 | ||
9213a6d7 | 6232 | thread_info *tp = this->find_thread (inferior_ptid); |
00431a78 | 6233 | |
de0d863e DB |
6234 | /* Check to see if we are detaching a fork parent. Note that if we |
6235 | are detaching a fork child, tp == NULL. */ | |
6236 | is_fork_parent = (tp != NULL | |
183be222 | 6237 | && tp->pending_follow.kind () == TARGET_WAITKIND_FORKED); |
de0d863e DB |
6238 | |
6239 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
6240 | breakpoints that should be available for the followed inferior. */ | |
6241 | if (!is_fork_parent) | |
f67c0c91 | 6242 | { |
249b5733 PA |
6243 | /* Save the pid as a string before mourning, since that will |
6244 | unpush the remote target, and we need the string after. */ | |
f2907e49 | 6245 | std::string infpid = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
6246 | |
6247 | target_mourn_inferior (inferior_ptid); | |
6248 | if (print_inferior_events) | |
6cb06a8c TT |
6249 | gdb_printf (_("[Inferior %d (%s) detached]\n"), |
6250 | inf->num, infpid.c_str ()); | |
f67c0c91 | 6251 | } |
de0d863e DB |
6252 | else |
6253 | { | |
0ac55310 | 6254 | switch_to_no_thread (); |
00431a78 | 6255 | detach_inferior (current_inferior ()); |
de0d863e | 6256 | } |
2d717e4f DJ |
6257 | } |
6258 | ||
f6ac5f3d PA |
6259 | void |
6260 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 6261 | { |
00431a78 | 6262 | remote_detach_1 (inf, from_tty); |
2d717e4f DJ |
6263 | } |
6264 | ||
f6ac5f3d PA |
6265 | void |
6266 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 6267 | { |
00431a78 | 6268 | remote_detach_1 (inf, from_tty); |
de0d863e DB |
6269 | } |
6270 | ||
6271 | /* Target follow-fork function for remote targets. On entry, and | |
6272 | at return, the current inferior is the fork parent. | |
6273 | ||
6274 | Note that although this is currently only used for extended-remote, | |
6275 | it is named remote_follow_fork in anticipation of using it for the | |
6276 | remote target as well. */ | |
6277 | ||
e97007b6 | 6278 | void |
82d1f134 SM |
6279 | remote_target::follow_fork (inferior *child_inf, ptid_t child_ptid, |
6280 | target_waitkind fork_kind, bool follow_child, | |
6281 | bool detach_fork) | |
de0d863e | 6282 | { |
82d1f134 SM |
6283 | process_stratum_target::follow_fork (child_inf, child_ptid, |
6284 | fork_kind, follow_child, detach_fork); | |
6285 | ||
ff52c073 CS |
6286 | if ((fork_kind == TARGET_WAITKIND_FORKED |
6287 | && m_features.remote_fork_event_p ()) | |
6288 | || (fork_kind == TARGET_WAITKIND_VFORKED | |
6289 | && m_features.remote_vfork_event_p ())) | |
de0d863e DB |
6290 | { |
6291 | /* When following the parent and detaching the child, we detach | |
6292 | the child here. For the case of following the child and | |
6293 | detaching the parent, the detach is done in the target- | |
6294 | independent follow fork code in infrun.c. We can't use | |
6295 | target_detach when detaching an unfollowed child because | |
6296 | the client side doesn't know anything about the child. */ | |
6297 | if (detach_fork && !follow_child) | |
6298 | { | |
6299 | /* Detach the fork child. */ | |
3a849a34 | 6300 | remote_detach_pid (child_ptid.pid ()); |
de0d863e DB |
6301 | } |
6302 | } | |
c906108c SS |
6303 | } |
6304 | ||
94585166 | 6305 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
294c36eb | 6306 | in the program space of the new inferior. */ |
94585166 | 6307 | |
f6ac5f3d | 6308 | void |
294c36eb SM |
6309 | remote_target::follow_exec (inferior *follow_inf, ptid_t ptid, |
6310 | const char *execd_pathname) | |
94585166 | 6311 | { |
294c36eb SM |
6312 | process_stratum_target::follow_exec (follow_inf, ptid, execd_pathname); |
6313 | ||
94585166 DB |
6314 | /* We know that this is a target file name, so if it has the "target:" |
6315 | prefix we strip it off before saving it in the program space. */ | |
6316 | if (is_target_filename (execd_pathname)) | |
6317 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
6318 | ||
294c36eb | 6319 | set_pspace_remote_exec_file (follow_inf->pspace, execd_pathname); |
94585166 DB |
6320 | } |
6321 | ||
6ad8ae5c DJ |
6322 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
6323 | ||
f6ac5f3d PA |
6324 | void |
6325 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 6326 | { |
43ff13b4 | 6327 | if (args) |
2d717e4f | 6328 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 6329 | |
8020350c | 6330 | /* Make sure we unpush even the extended remote targets. Calling |
5b6d1e4f PA |
6331 | target_mourn_inferior won't unpush, and |
6332 | remote_target::mourn_inferior won't unpush if there is more than | |
6333 | one inferior left. */ | |
6334 | remote_unpush_target (this); | |
2d717e4f | 6335 | |
43ff13b4 | 6336 | if (from_tty) |
0426ad51 | 6337 | gdb_puts ("Ending remote debugging.\n"); |
43ff13b4 JM |
6338 | } |
6339 | ||
2d717e4f DJ |
6340 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
6341 | be chatty about it. */ | |
6342 | ||
f6ac5f3d PA |
6343 | void |
6344 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
6345 | { |
6346 | struct remote_state *rs = get_remote_state (); | |
be86555c | 6347 | int pid; |
96ef3384 | 6348 | char *wait_status = NULL; |
2d717e4f | 6349 | |
74164c56 | 6350 | pid = parse_pid_to_attach (args); |
2d717e4f | 6351 | |
74164c56 JK |
6352 | /* Remote PID can be freely equal to getpid, do not check it here the same |
6353 | way as in other targets. */ | |
2d717e4f | 6354 | |
ff52c073 | 6355 | if (m_features.packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
6356 | error (_("This target does not support attaching to a process")); |
6357 | ||
bc521517 | 6358 | target_announce_attach (from_tty, pid); |
7cee1e54 | 6359 | |
8d64371b | 6360 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f | 6361 | putpkt (rs->buf); |
aa7b36b8 | 6362 | getpkt (&rs->buf); |
2d717e4f | 6363 | |
ff52c073 | 6364 | switch (m_features.packet_ok (rs->buf, PACKET_vAttach)) |
2d717e4f | 6365 | { |
4082afcc | 6366 | case PACKET_OK: |
6efcd9a8 | 6367 | if (!target_is_non_stop_p ()) |
74531fed PA |
6368 | { |
6369 | /* Save the reply for later. */ | |
8d64371b TT |
6370 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
6371 | strcpy (wait_status, rs->buf.data ()); | |
74531fed | 6372 | } |
8d64371b | 6373 | else if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 6374 | error (_("Attaching to %s failed with: %s"), |
a068643d | 6375 | target_pid_to_str (ptid_t (pid)).c_str (), |
8d64371b | 6376 | rs->buf.data ()); |
4082afcc PA |
6377 | break; |
6378 | case PACKET_UNKNOWN: | |
6379 | error (_("This target does not support attaching to a process")); | |
6380 | default: | |
50fa3001 SDJ |
6381 | error (_("Attaching to %s failed"), |
6382 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
2d717e4f | 6383 | } |
2d717e4f | 6384 | |
0ac55310 | 6385 | switch_to_inferior_no_thread (remote_add_inferior (false, pid, 1, 0)); |
bad34192 | 6386 | |
f2907e49 | 6387 | inferior_ptid = ptid_t (pid); |
79d7f229 | 6388 | |
6efcd9a8 | 6389 | if (target_is_non_stop_p ()) |
bad34192 | 6390 | { |
bad34192 | 6391 | /* Get list of threads. */ |
f6ac5f3d | 6392 | update_thread_list (); |
82f73884 | 6393 | |
0ac55310 PA |
6394 | thread_info *thread = first_thread_of_inferior (current_inferior ()); |
6395 | if (thread != nullptr) | |
6396 | switch_to_thread (thread); | |
bad34192 PA |
6397 | |
6398 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 6399 | record_currthread (rs, minus_one_ptid); |
bad34192 | 6400 | } |
74531fed | 6401 | else |
bad34192 | 6402 | { |
0ac55310 PA |
6403 | /* Now, if we have thread information, update the main thread's |
6404 | ptid. */ | |
6405 | ptid_t curr_ptid = remote_current_thread (ptid_t (pid)); | |
bad34192 | 6406 | |
b622494e AB |
6407 | /* Add the main thread to the thread list. We add the thread |
6408 | silently in this case (the final true parameter). */ | |
6409 | thread_info *thr = remote_add_thread (curr_ptid, true, true, true); | |
0ac55310 PA |
6410 | |
6411 | switch_to_thread (thr); | |
bad34192 | 6412 | } |
c0a2216e | 6413 | |
96ef3384 UW |
6414 | /* Next, if the target can specify a description, read it. We do |
6415 | this before anything involving memory or registers. */ | |
6416 | target_find_description (); | |
6417 | ||
6efcd9a8 | 6418 | if (!target_is_non_stop_p ()) |
74531fed PA |
6419 | { |
6420 | /* Use the previously fetched status. */ | |
6421 | gdb_assert (wait_status != NULL); | |
6422 | ||
4f626cad AB |
6423 | struct notif_event *reply |
6424 | = remote_notif_parse (this, ¬if_client_stop, wait_status); | |
74531fed | 6425 | |
4f626cad | 6426 | push_stop_reply ((struct stop_reply *) reply); |
74531fed PA |
6427 | } |
6428 | else | |
621cc310 PA |
6429 | { |
6430 | gdb_assert (wait_status == NULL); | |
6431 | ||
6432 | gdb_assert (target_can_async_p ()); | |
621cc310 | 6433 | } |
2d717e4f DJ |
6434 | } |
6435 | ||
b9c1d481 AS |
6436 | /* Implementation of the to_post_attach method. */ |
6437 | ||
f6ac5f3d PA |
6438 | void |
6439 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 6440 | { |
6efcd9a8 PA |
6441 | /* Get text, data & bss offsets. */ |
6442 | get_offsets (); | |
6443 | ||
b9c1d481 AS |
6444 | /* In certain cases GDB might not have had the chance to start |
6445 | symbol lookup up until now. This could happen if the debugged | |
6446 | binary is not using shared libraries, the vsyscall page is not | |
6447 | present (on Linux) and the binary itself hadn't changed since the | |
6448 | debugging process was started. */ | |
a42d7dd8 | 6449 | if (current_program_space->symfile_object_file != NULL) |
b9c1d481 AS |
6450 | remote_check_symbols(); |
6451 | } | |
6452 | ||
c906108c | 6453 | \f |
506fb367 DJ |
6454 | /* Check for the availability of vCont. This function should also check |
6455 | the response. */ | |
c906108c | 6456 | |
6b8edb51 PA |
6457 | void |
6458 | remote_target::remote_vcont_probe () | |
c906108c | 6459 | { |
6b8edb51 | 6460 | remote_state *rs = get_remote_state (); |
2e9f7625 | 6461 | char *buf; |
6d820c5c | 6462 | |
8d64371b | 6463 | strcpy (rs->buf.data (), "vCont?"); |
2e9f7625 | 6464 | putpkt (rs->buf); |
aa7b36b8 | 6465 | getpkt (&rs->buf); |
8d64371b | 6466 | buf = rs->buf.data (); |
c906108c | 6467 | |
506fb367 | 6468 | /* Make sure that the features we assume are supported. */ |
61012eef | 6469 | if (startswith (buf, "vCont")) |
506fb367 DJ |
6470 | { |
6471 | char *p = &buf[5]; | |
750ce8d1 | 6472 | int support_c, support_C; |
506fb367 | 6473 | |
750ce8d1 YQ |
6474 | rs->supports_vCont.s = 0; |
6475 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
6476 | support_c = 0; |
6477 | support_C = 0; | |
d458bd84 | 6478 | rs->supports_vCont.t = 0; |
c1e36e3e | 6479 | rs->supports_vCont.r = 0; |
506fb367 DJ |
6480 | while (p && *p == ';') |
6481 | { | |
6482 | p++; | |
6483 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 6484 | rs->supports_vCont.s = 1; |
506fb367 | 6485 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 6486 | rs->supports_vCont.S = 1; |
506fb367 DJ |
6487 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6488 | support_c = 1; | |
6489 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
6490 | support_C = 1; | |
74531fed | 6491 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 6492 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
6493 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6494 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
6495 | |
6496 | p = strchr (p, ';'); | |
6497 | } | |
c906108c | 6498 | |
750ce8d1 YQ |
6499 | /* If c, and C are not all supported, we can't use vCont. Clearing |
6500 | BUF will make packet_ok disable the packet. */ | |
6501 | if (!support_c || !support_C) | |
506fb367 DJ |
6502 | buf[0] = 0; |
6503 | } | |
c906108c | 6504 | |
ff52c073 | 6505 | m_features.packet_ok (rs->buf, PACKET_vCont); |
506fb367 | 6506 | } |
c906108c | 6507 | |
0d8f58ca PA |
6508 | /* Helper function for building "vCont" resumptions. Write a |
6509 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
6510 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
6511 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
6512 | resumed thread should be single-stepped and/or signalled. If PTID | |
6513 | equals minus_one_ptid, then all threads are resumed; if PTID | |
d51926f0 PA |
6514 | represents a process, then all threads of the process are |
6515 | resumed. */ | |
0d8f58ca | 6516 | |
6b8edb51 PA |
6517 | char * |
6518 | remote_target::append_resumption (char *p, char *endp, | |
6519 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
6520 | { |
6521 | struct remote_state *rs = get_remote_state (); | |
6522 | ||
a493e3e2 | 6523 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 6524 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
6525 | else if (step |
6526 | /* GDB is willing to range step. */ | |
6527 | && use_range_stepping | |
6528 | /* Target supports range stepping. */ | |
6529 | && rs->supports_vCont.r | |
6530 | /* We don't currently support range stepping multiple | |
6531 | threads with a wildcard (though the protocol allows it, | |
6532 | so stubs shouldn't make an active effort to forbid | |
6533 | it). */ | |
ff52c073 | 6534 | && !(m_features.remote_multi_process_p () && ptid.is_pid ())) |
c1e36e3e PA |
6535 | { |
6536 | struct thread_info *tp; | |
6537 | ||
d7e15655 | 6538 | if (ptid == minus_one_ptid) |
c1e36e3e PA |
6539 | { |
6540 | /* If we don't know about the target thread's tid, then | |
6541 | we're resuming magic_null_ptid (see caller). */ | |
9213a6d7 | 6542 | tp = this->find_thread (magic_null_ptid); |
c1e36e3e PA |
6543 | } |
6544 | else | |
9213a6d7 | 6545 | tp = this->find_thread (ptid); |
c1e36e3e PA |
6546 | gdb_assert (tp != NULL); |
6547 | ||
6548 | if (tp->control.may_range_step) | |
6549 | { | |
99d9c3b9 | 6550 | int addr_size = gdbarch_addr_bit (current_inferior ()->arch ()) / 8; |
c1e36e3e PA |
6551 | |
6552 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6553 | phex_nz (tp->control.step_range_start, | |
6554 | addr_size), | |
6555 | phex_nz (tp->control.step_range_end, | |
6556 | addr_size)); | |
6557 | } | |
6558 | else | |
6559 | p += xsnprintf (p, endp - p, ";s"); | |
6560 | } | |
0d8f58ca PA |
6561 | else if (step) |
6562 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6563 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6564 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6565 | else | |
6566 | p += xsnprintf (p, endp - p, ";c"); | |
6567 | ||
ff52c073 | 6568 | if (m_features.remote_multi_process_p () && ptid.is_pid ()) |
0d8f58ca PA |
6569 | { |
6570 | ptid_t nptid; | |
6571 | ||
6572 | /* All (-1) threads of process. */ | |
184ea2f7 | 6573 | nptid = ptid_t (ptid.pid (), -1); |
0d8f58ca PA |
6574 | |
6575 | p += xsnprintf (p, endp - p, ":"); | |
6576 | p = write_ptid (p, endp, nptid); | |
6577 | } | |
d7e15655 | 6578 | else if (ptid != minus_one_ptid) |
0d8f58ca PA |
6579 | { |
6580 | p += xsnprintf (p, endp - p, ":"); | |
6581 | p = write_ptid (p, endp, ptid); | |
6582 | } | |
6583 | ||
6584 | return p; | |
6585 | } | |
6586 | ||
799a2abe PA |
6587 | /* Clear the thread's private info on resume. */ |
6588 | ||
6589 | static void | |
6590 | resume_clear_thread_private_info (struct thread_info *thread) | |
6591 | { | |
6592 | if (thread->priv != NULL) | |
6593 | { | |
7aabaf9d SM |
6594 | remote_thread_info *priv = get_remote_thread_info (thread); |
6595 | ||
6596 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6597 | priv->watch_data_address = 0; | |
799a2abe PA |
6598 | } |
6599 | } | |
6600 | ||
e5ef252a PA |
6601 | /* Append a vCont continue-with-signal action for threads that have a |
6602 | non-zero stop signal. */ | |
6603 | ||
6b8edb51 PA |
6604 | char * |
6605 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6606 | ptid_t ptid) | |
e5ef252a | 6607 | { |
5b6d1e4f | 6608 | for (thread_info *thread : all_non_exited_threads (this, ptid)) |
08036331 | 6609 | if (inferior_ptid != thread->ptid |
1edb66d8 | 6610 | && thread->stop_signal () != GDB_SIGNAL_0) |
e5ef252a PA |
6611 | { |
6612 | p = append_resumption (p, endp, thread->ptid, | |
1edb66d8 SM |
6613 | 0, thread->stop_signal ()); |
6614 | thread->set_stop_signal (GDB_SIGNAL_0); | |
799a2abe | 6615 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6616 | } |
6617 | ||
6618 | return p; | |
6619 | } | |
6620 | ||
7b68ffbb PA |
6621 | /* Set the target running, using the packets that use Hc |
6622 | (c/s/C/S). */ | |
6623 | ||
6b8edb51 PA |
6624 | void |
6625 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6626 | gdb_signal siggnal) | |
7b68ffbb PA |
6627 | { |
6628 | struct remote_state *rs = get_remote_state (); | |
7b68ffbb PA |
6629 | char *buf; |
6630 | ||
6631 | rs->last_sent_signal = siggnal; | |
6632 | rs->last_sent_step = step; | |
6633 | ||
6634 | /* The c/s/C/S resume packets use Hc, so set the continue | |
6635 | thread. */ | |
d7e15655 | 6636 | if (ptid == minus_one_ptid) |
7b68ffbb PA |
6637 | set_continue_thread (any_thread_ptid); |
6638 | else | |
6639 | set_continue_thread (ptid); | |
6640 | ||
5b6d1e4f | 6641 | for (thread_info *thread : all_non_exited_threads (this)) |
7b68ffbb PA |
6642 | resume_clear_thread_private_info (thread); |
6643 | ||
8d64371b | 6644 | buf = rs->buf.data (); |
6b8edb51 | 6645 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6646 | { |
6647 | /* We don't pass signals to the target in reverse exec mode. */ | |
6648 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
6649 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
6650 | siggnal); | |
6651 | ||
ff52c073 | 6652 | if (step && m_features.packet_support (PACKET_bs) == PACKET_DISABLE) |
7b68ffbb | 6653 | error (_("Remote reverse-step not supported.")); |
ff52c073 | 6654 | if (!step && m_features.packet_support (PACKET_bc) == PACKET_DISABLE) |
7b68ffbb PA |
6655 | error (_("Remote reverse-continue not supported.")); |
6656 | ||
6657 | strcpy (buf, step ? "bs" : "bc"); | |
6658 | } | |
6659 | else if (siggnal != GDB_SIGNAL_0) | |
6660 | { | |
6661 | buf[0] = step ? 'S' : 'C'; | |
6662 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
6663 | buf[2] = tohex (((int) siggnal) & 0xf); | |
6664 | buf[3] = '\0'; | |
6665 | } | |
6666 | else | |
6667 | strcpy (buf, step ? "s" : "c"); | |
6668 | ||
6669 | putpkt (buf); | |
6670 | } | |
6671 | ||
d51926f0 PA |
6672 | /* Resume the remote inferior by using a "vCont" packet. SCOPE_PTID, |
6673 | STEP, and SIGGNAL have the same meaning as in target_resume. This | |
6674 | function returns non-zero iff it resumes the inferior. | |
44eaed12 | 6675 | |
7b68ffbb PA |
6676 | This function issues a strict subset of all possible vCont commands |
6677 | at the moment. */ | |
44eaed12 | 6678 | |
6b8edb51 | 6679 | int |
d51926f0 | 6680 | remote_target::remote_resume_with_vcont (ptid_t scope_ptid, int step, |
6b8edb51 | 6681 | enum gdb_signal siggnal) |
506fb367 DJ |
6682 | { |
6683 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
6684 | char *p; |
6685 | char *endp; | |
44eaed12 | 6686 | |
7b68ffbb | 6687 | /* No reverse execution actions defined for vCont. */ |
6b8edb51 | 6688 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6689 | return 0; |
6690 | ||
ff52c073 | 6691 | if (m_features.packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 6692 | return 0; |
44eaed12 | 6693 | |
8d64371b TT |
6694 | p = rs->buf.data (); |
6695 | endp = p + get_remote_packet_size (); | |
82f73884 | 6696 | |
506fb367 DJ |
6697 | /* If we could generate a wider range of packets, we'd have to worry |
6698 | about overflowing BUF. Should there be a generic | |
6699 | "multi-part-packet" packet? */ | |
6700 | ||
0d8f58ca PA |
6701 | p += xsnprintf (p, endp - p, "vCont"); |
6702 | ||
d51926f0 | 6703 | if (scope_ptid == magic_null_ptid) |
c906108c | 6704 | { |
79d7f229 PA |
6705 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
6706 | so we don't have any TID numbers the inferior will | |
6707 | understand. Make sure to only send forms that do not specify | |
6708 | a TID. */ | |
a9cbf802 | 6709 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 6710 | } |
d51926f0 | 6711 | else if (scope_ptid == minus_one_ptid || scope_ptid.is_pid ()) |
506fb367 | 6712 | { |
0d8f58ca PA |
6713 | /* Resume all threads (of all processes, or of a single |
6714 | process), with preference for INFERIOR_PTID. This assumes | |
6715 | inferior_ptid belongs to the set of all threads we are about | |
6716 | to resume. */ | |
a493e3e2 | 6717 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 6718 | { |
0d8f58ca PA |
6719 | /* Step inferior_ptid, with or without signal. */ |
6720 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 6721 | } |
0d8f58ca | 6722 | |
e5ef252a PA |
6723 | /* Also pass down any pending signaled resumption for other |
6724 | threads not the current. */ | |
d51926f0 | 6725 | p = append_pending_thread_resumptions (p, endp, scope_ptid); |
e5ef252a | 6726 | |
0d8f58ca | 6727 | /* And continue others without a signal. */ |
d51926f0 | 6728 | append_resumption (p, endp, scope_ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
6729 | } |
6730 | else | |
506fb367 | 6731 | { |
d51926f0 PA |
6732 | /* Scheduler locking; resume only SCOPE_PTID. */ |
6733 | append_resumption (p, endp, scope_ptid, step, siggnal); | |
506fb367 | 6734 | } |
c906108c | 6735 | |
8d64371b | 6736 | gdb_assert (strlen (rs->buf.data ()) < get_remote_packet_size ()); |
82f73884 | 6737 | putpkt (rs->buf); |
506fb367 | 6738 | |
6efcd9a8 | 6739 | if (target_is_non_stop_p ()) |
74531fed PA |
6740 | { |
6741 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6742 | reply will be reported asynchronously by means of a `%Stop' | |
6743 | notification. */ | |
aa7b36b8 | 6744 | getpkt (&rs->buf); |
8d64371b TT |
6745 | if (strcmp (rs->buf.data (), "OK") != 0) |
6746 | error (_("Unexpected vCont reply in non-stop mode: %s"), | |
6747 | rs->buf.data ()); | |
74531fed PA |
6748 | } |
6749 | ||
506fb367 | 6750 | return 1; |
c906108c | 6751 | } |
43ff13b4 | 6752 | |
506fb367 DJ |
6753 | /* Tell the remote machine to resume. */ |
6754 | ||
f6ac5f3d | 6755 | void |
d51926f0 | 6756 | remote_target::resume (ptid_t scope_ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 6757 | { |
d01949b6 | 6758 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6759 | |
85ad3aaf PA |
6760 | /* When connected in non-stop mode, the core resumes threads |
6761 | individually. Resuming remote threads directly in target_resume | |
6762 | would thus result in sending one packet per thread. Instead, to | |
6763 | minimize roundtrip latency, here we just store the resume | |
c9d22089 SM |
6764 | request (put the thread in RESUMED_PENDING_VCONT state); the actual remote |
6765 | resumption will be done in remote_target::commit_resume, where we'll be | |
6766 | able to do vCont action coalescing. */ | |
f6ac5f3d | 6767 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6768 | { |
d51926f0 PA |
6769 | remote_thread_info *remote_thr |
6770 | = get_remote_thread_info (inferior_thread ()); | |
7aabaf9d | 6771 | |
c9d22089 | 6772 | /* We don't expect the core to ask to resume an already resumed (from |
287de656 | 6773 | its point of view) thread. */ |
a6c11cbb | 6774 | gdb_assert (remote_thr->get_resume_state () == resume_state::NOT_RESUMED); |
c9d22089 SM |
6775 | |
6776 | remote_thr->set_resumed_pending_vcont (step, siggnal); | |
d51926f0 PA |
6777 | |
6778 | /* There's actually nothing that says that the core can't | |
6779 | request a wildcard resume in non-stop mode, though. It's | |
6780 | just that we know it doesn't currently, so we don't bother | |
6781 | with it. */ | |
6782 | gdb_assert (scope_ptid == inferior_ptid); | |
85ad3aaf PA |
6783 | return; |
6784 | } | |
6785 | ||
722247f1 YQ |
6786 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6787 | (explained in remote-notif.c:handle_notification) so | |
6788 | remote_notif_process is not called. We need find a place where | |
6789 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6790 | before resuming inferior, because inferior was stopped and no RSP | |
6791 | traffic at that moment. */ | |
6efcd9a8 | 6792 | if (!target_is_non_stop_p ()) |
5965e028 | 6793 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6794 | |
f6ac5f3d | 6795 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6796 | |
7b68ffbb | 6797 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
d51926f0 PA |
6798 | if (!remote_resume_with_vcont (scope_ptid, step, siggnal)) |
6799 | remote_resume_with_hc (scope_ptid, step, siggnal); | |
43ff13b4 | 6800 | |
c9d22089 | 6801 | /* Update resumed state tracked by the remote target. */ |
d51926f0 | 6802 | for (thread_info *tp : all_non_exited_threads (this, scope_ptid)) |
c9d22089 SM |
6803 | get_remote_thread_info (tp)->set_resumed (); |
6804 | ||
e24a49d8 PA |
6805 | /* We've just told the target to resume. The remote server will |
6806 | wait for the inferior to stop, and then send a stop reply. In | |
6807 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6808 | because the stub wouldn't be ready to process it. This applies |
6809 | only to the base all-stop protocol, however. In non-stop (which | |
6810 | only supports vCont), the stub replies with an "OK", and is | |
6811 | immediate able to process further serial input. */ | |
6efcd9a8 | 6812 | if (!target_is_non_stop_p ()) |
74531fed | 6813 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6814 | } |
85ad3aaf | 6815 | |
85ad3aaf PA |
6816 | /* Private per-inferior info for target remote processes. */ |
6817 | ||
089354bb | 6818 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6819 | { |
6820 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6821 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6822 | }; |
6823 | ||
089354bb SM |
6824 | /* Get the remote private inferior data associated to INF. */ |
6825 | ||
6826 | static remote_inferior * | |
6827 | get_remote_inferior (inferior *inf) | |
6828 | { | |
6829 | if (inf->priv == NULL) | |
6830 | inf->priv.reset (new remote_inferior); | |
6831 | ||
98ed24fb | 6832 | return gdb::checked_static_cast<remote_inferior *> (inf->priv.get ()); |
089354bb SM |
6833 | } |
6834 | ||
f5db4863 | 6835 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6836 | outgoing packet buffer. This is used to send multiple vCont |
6837 | packets if we have more actions than would fit a single packet. */ | |
6838 | ||
f5db4863 | 6839 | class vcont_builder |
85ad3aaf | 6840 | { |
f5db4863 | 6841 | public: |
6b8edb51 PA |
6842 | explicit vcont_builder (remote_target *remote) |
6843 | : m_remote (remote) | |
f5db4863 PA |
6844 | { |
6845 | restart (); | |
6846 | } | |
6847 | ||
6848 | void flush (); | |
6849 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6850 | ||
6851 | private: | |
6852 | void restart (); | |
6853 | ||
6b8edb51 PA |
6854 | /* The remote target. */ |
6855 | remote_target *m_remote; | |
6856 | ||
85ad3aaf PA |
6857 | /* Pointer to the first action. P points here if no action has been |
6858 | appended yet. */ | |
f5db4863 | 6859 | char *m_first_action; |
85ad3aaf PA |
6860 | |
6861 | /* Where the next action will be appended. */ | |
f5db4863 | 6862 | char *m_p; |
85ad3aaf PA |
6863 | |
6864 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6865 | char *m_endp; |
85ad3aaf PA |
6866 | }; |
6867 | ||
6868 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6869 | ||
f5db4863 PA |
6870 | void |
6871 | vcont_builder::restart () | |
85ad3aaf | 6872 | { |
6b8edb51 | 6873 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6874 | |
8d64371b TT |
6875 | m_p = rs->buf.data (); |
6876 | m_endp = m_p + m_remote->get_remote_packet_size (); | |
f5db4863 PA |
6877 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6878 | m_first_action = m_p; | |
85ad3aaf PA |
6879 | } |
6880 | ||
6881 | /* If the vCont packet being built has any action, send it to the | |
6882 | remote end. */ | |
6883 | ||
f5db4863 PA |
6884 | void |
6885 | vcont_builder::flush () | |
85ad3aaf PA |
6886 | { |
6887 | struct remote_state *rs; | |
6888 | ||
f5db4863 | 6889 | if (m_p == m_first_action) |
85ad3aaf PA |
6890 | return; |
6891 | ||
6b8edb51 PA |
6892 | rs = m_remote->get_remote_state (); |
6893 | m_remote->putpkt (rs->buf); | |
aa7b36b8 | 6894 | m_remote->getpkt (&rs->buf); |
8d64371b TT |
6895 | if (strcmp (rs->buf.data (), "OK") != 0) |
6896 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf.data ()); | |
85ad3aaf PA |
6897 | } |
6898 | ||
6899 | /* The largest action is range-stepping, with its two addresses. This | |
6900 | is more than sufficient. If a new, bigger action is created, it'll | |
6901 | quickly trigger a failed assertion in append_resumption (and we'll | |
6902 | just bump this). */ | |
6903 | #define MAX_ACTION_SIZE 200 | |
6904 | ||
6905 | /* Append a new vCont action in the outgoing packet being built. If | |
6906 | the action doesn't fit the packet along with previous actions, push | |
6907 | what we've got so far to the remote end and start over a new vCont | |
6908 | packet (with the new action). */ | |
6909 | ||
f5db4863 PA |
6910 | void |
6911 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6912 | { |
6913 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6914 | |
6b8edb51 PA |
6915 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6916 | ptid, step, siggnal); | |
85ad3aaf PA |
6917 | |
6918 | /* Check whether this new action would fit in the vCont packet along | |
6919 | with previous actions. If not, send what we've got so far and | |
6920 | start a new vCont packet. */ | |
f5db4863 PA |
6921 | size_t rsize = endp - buf; |
6922 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6923 | { |
f5db4863 PA |
6924 | flush (); |
6925 | restart (); | |
85ad3aaf PA |
6926 | |
6927 | /* Should now fit. */ | |
f5db4863 | 6928 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6929 | } |
6930 | ||
f5db4863 PA |
6931 | memcpy (m_p, buf, rsize); |
6932 | m_p += rsize; | |
6933 | *m_p = '\0'; | |
85ad3aaf PA |
6934 | } |
6935 | ||
6936 | /* to_commit_resume implementation. */ | |
6937 | ||
f6ac5f3d | 6938 | void |
1192f124 | 6939 | remote_target::commit_resumed () |
85ad3aaf | 6940 | { |
85ad3aaf PA |
6941 | /* If connected in all-stop mode, we'd send the remote resume |
6942 | request directly from remote_resume. Likewise if | |
6943 | reverse-debugging, as there are no defined vCont actions for | |
6944 | reverse execution. */ | |
f6ac5f3d | 6945 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6946 | return; |
6947 | ||
6948 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6949 | instead of resuming all threads of each process individually. | |
6950 | However, if any thread of a process must remain halted, we can't | |
6951 | send wildcard resumes and must send one action per thread. | |
6952 | ||
6953 | Care must be taken to not resume threads/processes the server | |
6954 | side already told us are stopped, but the core doesn't know about | |
6955 | yet, because the events are still in the vStopped notification | |
6956 | queue. For example: | |
6957 | ||
6958 | #1 => vCont s:p1.1;c | |
6959 | #2 <= OK | |
6960 | #3 <= %Stopped T05 p1.1 | |
6961 | #4 => vStopped | |
6962 | #5 <= T05 p1.2 | |
6963 | #6 => vStopped | |
6964 | #7 <= OK | |
6965 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6966 | #9 => vCont s:p1.1;c | |
6967 | ||
6968 | The last vCont above would resume thread p1.2 by mistake, because | |
6969 | the server has no idea that the event for p1.2 had not been | |
6970 | handled yet. | |
6971 | ||
6972 | The server side must similarly ignore resume actions for the | |
6973 | thread that has a pending %Stopped notification (and any other | |
6974 | threads with events pending), until GDB acks the notification | |
6975 | with vStopped. Otherwise, e.g., the following case is | |
6976 | mishandled: | |
6977 | ||
6978 | #1 => g (or any other packet) | |
6979 | #2 <= [registers] | |
6980 | #3 <= %Stopped T05 p1.2 | |
6981 | #4 => vCont s:p1.1;c | |
6982 | #5 <= OK | |
6983 | ||
6984 | Above, the server must not resume thread p1.2. GDB can't know | |
6985 | that p1.2 stopped until it acks the %Stopped notification, and | |
6986 | since from GDB's perspective all threads should be running, it | |
6987 | sends a "c" action. | |
6988 | ||
6989 | Finally, special care must also be given to handling fork/vfork | |
6990 | events. A (v)fork event actually tells us that two processes | |
6991 | stopped -- the parent and the child. Until we follow the fork, | |
6992 | we must not resume the child. Therefore, if we have a pending | |
6993 | fork follow, we must not send a global wildcard resume action | |
6994 | (vCont;c). We can still send process-wide wildcards though. */ | |
6995 | ||
6996 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
2f63ec5c | 6997 | bool may_global_wildcard_vcont = true; |
85ad3aaf PA |
6998 | |
6999 | /* And assume every process is individually wildcard-able too. */ | |
5b6d1e4f | 7000 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 7001 | { |
089354bb SM |
7002 | remote_inferior *priv = get_remote_inferior (inf); |
7003 | ||
7004 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
7005 | } |
7006 | ||
7007 | /* Check for any pending events (not reported or processed yet) and | |
7008 | disable process and global wildcard resumes appropriately. */ | |
7009 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
7010 | ||
1192f124 SM |
7011 | bool any_pending_vcont_resume = false; |
7012 | ||
5b6d1e4f | 7013 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 7014 | { |
c9d22089 SM |
7015 | remote_thread_info *priv = get_remote_thread_info (tp); |
7016 | ||
85ad3aaf PA |
7017 | /* If a thread of a process is not meant to be resumed, then we |
7018 | can't wildcard that process. */ | |
a6c11cbb | 7019 | if (priv->get_resume_state () == resume_state::NOT_RESUMED) |
85ad3aaf | 7020 | { |
089354bb | 7021 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
7022 | |
7023 | /* And if we can't wildcard a process, we can't wildcard | |
7024 | everything either. */ | |
2f63ec5c | 7025 | may_global_wildcard_vcont = false; |
85ad3aaf PA |
7026 | continue; |
7027 | } | |
7028 | ||
1192f124 SM |
7029 | if (priv->get_resume_state () == resume_state::RESUMED_PENDING_VCONT) |
7030 | any_pending_vcont_resume = true; | |
7031 | ||
85ad3aaf PA |
7032 | /* If a thread is the parent of an unfollowed fork, then we |
7033 | can't do a global wildcard, as that would resume the fork | |
7034 | child. */ | |
28561a65 | 7035 | if (thread_pending_fork_status (tp) != nullptr) |
2f63ec5c | 7036 | may_global_wildcard_vcont = false; |
85ad3aaf PA |
7037 | } |
7038 | ||
1192f124 SM |
7039 | /* We didn't have any resumed thread pending a vCont resume, so nothing to |
7040 | do. */ | |
7041 | if (!any_pending_vcont_resume) | |
7042 | return; | |
7043 | ||
85ad3aaf PA |
7044 | /* Now let's build the vCont packet(s). Actions must be appended |
7045 | from narrower to wider scopes (thread -> process -> global). If | |
7046 | we end up with too many actions for a single packet vcont_builder | |
7047 | flushes the current vCont packet to the remote side and starts a | |
7048 | new one. */ | |
6b8edb51 | 7049 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
7050 | |
7051 | /* Threads first. */ | |
5b6d1e4f | 7052 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 7053 | { |
7aabaf9d | 7054 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf | 7055 | |
c9d22089 SM |
7056 | /* If the thread was previously vCont-resumed, no need to send a specific |
7057 | action for it. If we didn't receive a resume request for it, don't | |
7058 | send an action for it either. */ | |
a6c11cbb | 7059 | if (remote_thr->get_resume_state () != resume_state::RESUMED_PENDING_VCONT) |
85ad3aaf PA |
7060 | continue; |
7061 | ||
7062 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
7063 | ||
1192f124 | 7064 | /* We should never be commit-resuming a thread that has a stop reply. |
287de656 | 7065 | Otherwise, we would end up reporting a stop event for a thread while |
1192f124 SM |
7066 | it is running on the remote target. */ |
7067 | remote_state *rs = get_remote_state (); | |
7068 | for (const auto &stop_reply : rs->stop_reply_queue) | |
7069 | gdb_assert (stop_reply->ptid != tp->ptid); | |
7070 | ||
c9d22089 SM |
7071 | const resumed_pending_vcont_info &info |
7072 | = remote_thr->resumed_pending_vcont_info (); | |
85ad3aaf | 7073 | |
c9d22089 | 7074 | /* Check if we need to send a specific action for this thread. If not, |
287de656 | 7075 | it will be included in a wildcard resume instead. */ |
c9d22089 SM |
7076 | if (info.step || info.sig != GDB_SIGNAL_0 |
7077 | || !get_remote_inferior (tp->inf)->may_wildcard_vcont) | |
7078 | vcont_builder.push_action (tp->ptid, info.step, info.sig); | |
7079 | ||
7080 | remote_thr->set_resumed (); | |
85ad3aaf PA |
7081 | } |
7082 | ||
7083 | /* Now check whether we can send any process-wide wildcard. This is | |
7084 | to avoid sending a global wildcard in the case nothing is | |
7085 | supposed to be resumed. */ | |
2f63ec5c | 7086 | bool any_process_wildcard = false; |
85ad3aaf | 7087 | |
5b6d1e4f | 7088 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 7089 | { |
089354bb | 7090 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 7091 | { |
2f63ec5c | 7092 | any_process_wildcard = true; |
85ad3aaf PA |
7093 | break; |
7094 | } | |
7095 | } | |
7096 | ||
7097 | if (any_process_wildcard) | |
7098 | { | |
7099 | /* If all processes are wildcard-able, then send a single "c" | |
7100 | action, otherwise, send an "all (-1) threads of process" | |
7101 | continue action for each running process, if any. */ | |
7102 | if (may_global_wildcard_vcont) | |
7103 | { | |
f5db4863 PA |
7104 | vcont_builder.push_action (minus_one_ptid, |
7105 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
7106 | } |
7107 | else | |
7108 | { | |
5b6d1e4f | 7109 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 7110 | { |
089354bb | 7111 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 7112 | { |
f2907e49 | 7113 | vcont_builder.push_action (ptid_t (inf->pid), |
f5db4863 | 7114 | false, GDB_SIGNAL_0); |
85ad3aaf PA |
7115 | } |
7116 | } | |
7117 | } | |
7118 | } | |
7119 | ||
f5db4863 | 7120 | vcont_builder.flush (); |
85ad3aaf PA |
7121 | } |
7122 | ||
b4b1a226 SM |
7123 | /* Implementation of target_has_pending_events. */ |
7124 | ||
7125 | bool | |
7126 | remote_target::has_pending_events () | |
7127 | { | |
7128 | if (target_can_async_p ()) | |
7129 | { | |
7130 | remote_state *rs = get_remote_state (); | |
7131 | ||
92b98b37 | 7132 | if (rs->async_event_handler_marked ()) |
b4b1a226 SM |
7133 | return true; |
7134 | ||
7135 | /* Note that BUFCNT can be negative, indicating sticky | |
7136 | error. */ | |
7137 | if (rs->remote_desc->bufcnt != 0) | |
7138 | return true; | |
7139 | } | |
7140 | return false; | |
7141 | } | |
7142 | ||
c906108c | 7143 | \f |
43ff13b4 | 7144 | |
74531fed PA |
7145 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
7146 | thread, all threads of a remote process, or all threads of all | |
7147 | processes. */ | |
7148 | ||
6b8edb51 PA |
7149 | void |
7150 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
7151 | { |
7152 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
7153 | char *p = rs->buf.data (); |
7154 | char *endp = p + get_remote_packet_size (); | |
74531fed | 7155 | |
1192f124 SM |
7156 | /* If any thread that needs to stop was resumed but pending a vCont |
7157 | resume, generate a phony stop_reply. However, first check | |
7158 | whether the thread wasn't resumed with a signal. Generating a | |
7159 | phony stop in that case would result in losing the signal. */ | |
7160 | bool needs_commit = false; | |
7161 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
7162 | { | |
7163 | remote_thread_info *remote_thr = get_remote_thread_info (tp); | |
7164 | ||
7165 | if (remote_thr->get_resume_state () | |
7166 | == resume_state::RESUMED_PENDING_VCONT) | |
7167 | { | |
7168 | const resumed_pending_vcont_info &info | |
7169 | = remote_thr->resumed_pending_vcont_info (); | |
7170 | if (info.sig != GDB_SIGNAL_0) | |
7171 | { | |
7172 | /* This signal must be forwarded to the inferior. We | |
7173 | could commit-resume just this thread, but its simpler | |
7174 | to just commit-resume everything. */ | |
7175 | needs_commit = true; | |
7176 | break; | |
7177 | } | |
7178 | } | |
7179 | } | |
7180 | ||
7181 | if (needs_commit) | |
7182 | commit_resumed (); | |
7183 | else | |
7184 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
7185 | { | |
7186 | remote_thread_info *remote_thr = get_remote_thread_info (tp); | |
7187 | ||
7188 | if (remote_thr->get_resume_state () | |
7189 | == resume_state::RESUMED_PENDING_VCONT) | |
7190 | { | |
7191 | remote_debug_printf ("Enqueueing phony stop reply for thread pending " | |
96bbe3ef TT |
7192 | "vCont-resume (%d, %ld, %s)", tp->ptid.pid(), |
7193 | tp->ptid.lwp (), | |
7194 | pulongest (tp->ptid.tid ())); | |
1192f124 SM |
7195 | |
7196 | /* Check that the thread wasn't resumed with a signal. | |
7197 | Generating a phony stop would result in losing the | |
7198 | signal. */ | |
7199 | const resumed_pending_vcont_info &info | |
7200 | = remote_thr->resumed_pending_vcont_info (); | |
7201 | gdb_assert (info.sig == GDB_SIGNAL_0); | |
7202 | ||
7203 | stop_reply *sr = new stop_reply (); | |
7204 | sr->ptid = tp->ptid; | |
7205 | sr->rs = rs; | |
183be222 | 7206 | sr->ws.set_stopped (GDB_SIGNAL_0); |
27b1f19f | 7207 | sr->arch = tp->inf->arch (); |
1192f124 SM |
7208 | sr->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
7209 | sr->watch_data_address = 0; | |
7210 | sr->core = 0; | |
7211 | this->push_stop_reply (sr); | |
7212 | ||
7213 | /* Pretend that this thread was actually resumed on the | |
7214 | remote target, then stopped. If we leave it in the | |
7215 | RESUMED_PENDING_VCONT state and the commit_resumed | |
7216 | method is called while the stop reply is still in the | |
7217 | queue, we'll end up reporting a stop event to the core | |
7218 | for that thread while it is running on the remote | |
7219 | target... that would be bad. */ | |
7220 | remote_thr->set_resumed (); | |
7221 | } | |
7222 | } | |
7223 | ||
d458bd84 | 7224 | if (!rs->supports_vCont.t) |
74531fed PA |
7225 | error (_("Remote server does not support stopping threads")); |
7226 | ||
d7e15655 | 7227 | if (ptid == minus_one_ptid |
ff52c073 | 7228 | || (!m_features.remote_multi_process_p () && ptid.is_pid ())) |
74531fed PA |
7229 | p += xsnprintf (p, endp - p, "vCont;t"); |
7230 | else | |
7231 | { | |
7232 | ptid_t nptid; | |
7233 | ||
74531fed PA |
7234 | p += xsnprintf (p, endp - p, "vCont;t:"); |
7235 | ||
0e998d96 | 7236 | if (ptid.is_pid ()) |
74531fed | 7237 | /* All (-1) threads of process. */ |
184ea2f7 | 7238 | nptid = ptid_t (ptid.pid (), -1); |
74531fed PA |
7239 | else |
7240 | { | |
7241 | /* Small optimization: if we already have a stop reply for | |
7242 | this thread, no use in telling the stub we want this | |
7243 | stopped. */ | |
7244 | if (peek_stop_reply (ptid)) | |
7245 | return; | |
7246 | ||
7247 | nptid = ptid; | |
7248 | } | |
7249 | ||
a9cbf802 | 7250 | write_ptid (p, endp, nptid); |
74531fed PA |
7251 | } |
7252 | ||
7253 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
7254 | come in asynchronously by notification. */ | |
7255 | putpkt (rs->buf); | |
aa7b36b8 | 7256 | getpkt (&rs->buf); |
8d64371b | 7257 | if (strcmp (rs->buf.data (), "OK") != 0) |
a068643d | 7258 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid).c_str (), |
8d64371b | 7259 | rs->buf.data ()); |
74531fed PA |
7260 | } |
7261 | ||
bfedc46a PA |
7262 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
7263 | interrupt the remote target. It is undefined which thread of which | |
7264 | process reports the interrupt. */ | |
74531fed | 7265 | |
6b8edb51 PA |
7266 | void |
7267 | remote_target::remote_interrupt_as () | |
74531fed PA |
7268 | { |
7269 | struct remote_state *rs = get_remote_state (); | |
7270 | ||
3a29589a DJ |
7271 | rs->ctrlc_pending_p = 1; |
7272 | ||
74531fed | 7273 | /* If the inferior is stopped already, but the core didn't know |
4f626cad | 7274 | about it yet, just ignore the request. The pending stop events |
74531fed | 7275 | will be collected in remote_wait. */ |
4f626cad | 7276 | if (stop_reply_queue_length () > 0) |
74531fed PA |
7277 | return; |
7278 | ||
9a7071a8 JB |
7279 | /* Send interrupt_sequence to remote target. */ |
7280 | send_interrupt_sequence (); | |
74531fed PA |
7281 | } |
7282 | ||
de979965 PA |
7283 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
7284 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
7285 | reports the interrupt. Throws an error if the packet is not |
7286 | supported by the server. */ | |
de979965 | 7287 | |
6b8edb51 PA |
7288 | void |
7289 | remote_target::remote_interrupt_ns () | |
de979965 PA |
7290 | { |
7291 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
7292 | char *p = rs->buf.data (); |
7293 | char *endp = p + get_remote_packet_size (); | |
de979965 PA |
7294 | |
7295 | xsnprintf (p, endp - p, "vCtrlC"); | |
7296 | ||
7297 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
7298 | come in asynchronously by notification. */ | |
7299 | putpkt (rs->buf); | |
aa7b36b8 | 7300 | getpkt (&rs->buf); |
de979965 | 7301 | |
ff52c073 | 7302 | switch (m_features.packet_ok (rs->buf, PACKET_vCtrlC)) |
de979965 PA |
7303 | { |
7304 | case PACKET_OK: | |
7305 | break; | |
7306 | case PACKET_UNKNOWN: | |
e42de8c7 | 7307 | error (_("No support for interrupting the remote target.")); |
de979965 | 7308 | case PACKET_ERROR: |
8d64371b | 7309 | error (_("Interrupting target failed: %s"), rs->buf.data ()); |
de979965 | 7310 | } |
de979965 PA |
7311 | } |
7312 | ||
bfedc46a | 7313 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 7314 | |
f6ac5f3d PA |
7315 | void |
7316 | remote_target::stop (ptid_t ptid) | |
c906108c | 7317 | { |
2189c312 | 7318 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
c906108c | 7319 | |
6efcd9a8 | 7320 | if (target_is_non_stop_p ()) |
74531fed | 7321 | remote_stop_ns (ptid); |
c906108c | 7322 | else |
bfedc46a PA |
7323 | { |
7324 | /* We don't currently have a way to transparently pause the | |
7325 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 7326 | remote_interrupt_as (); |
bfedc46a PA |
7327 | } |
7328 | } | |
7329 | ||
7330 | /* Implement the to_interrupt function for the remote targets. */ | |
7331 | ||
f6ac5f3d PA |
7332 | void |
7333 | remote_target::interrupt () | |
bfedc46a | 7334 | { |
2189c312 | 7335 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
bfedc46a | 7336 | |
e42de8c7 PA |
7337 | if (target_is_non_stop_p ()) |
7338 | remote_interrupt_ns (); | |
bfedc46a | 7339 | else |
e42de8c7 | 7340 | remote_interrupt_as (); |
c906108c SS |
7341 | } |
7342 | ||
93692b58 PA |
7343 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
7344 | ||
f6ac5f3d PA |
7345 | void |
7346 | remote_target::pass_ctrlc () | |
93692b58 | 7347 | { |
2189c312 | 7348 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
93692b58 | 7349 | |
2189c312 | 7350 | struct remote_state *rs = get_remote_state (); |
93692b58 PA |
7351 | |
7352 | /* If we're starting up, we're not fully synced yet. Quit | |
7353 | immediately. */ | |
7354 | if (rs->starting_up) | |
7355 | quit (); | |
7356 | /* If ^C has already been sent once, offer to disconnect. */ | |
7357 | else if (rs->ctrlc_pending_p) | |
7358 | interrupt_query (); | |
7359 | else | |
e671cd59 | 7360 | target_interrupt (); |
93692b58 PA |
7361 | } |
7362 | ||
c906108c SS |
7363 | /* Ask the user what to do when an interrupt is received. */ |
7364 | ||
6b8edb51 PA |
7365 | void |
7366 | remote_target::interrupt_query () | |
c906108c | 7367 | { |
abc56d60 | 7368 | struct remote_state *rs = get_remote_state (); |
c906108c | 7369 | |
abc56d60 | 7370 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 7371 | { |
abc56d60 PA |
7372 | if (query (_("The target is not responding to interrupt requests.\n" |
7373 | "Stop debugging it? "))) | |
74531fed | 7374 | { |
5b6d1e4f | 7375 | remote_unpush_target (this); |
abc56d60 | 7376 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
7377 | } |
7378 | } | |
abc56d60 PA |
7379 | else |
7380 | { | |
7381 | if (query (_("Interrupted while waiting for the program.\n" | |
7382 | "Give up waiting? "))) | |
7383 | quit (); | |
7384 | } | |
c906108c SS |
7385 | } |
7386 | ||
6426a772 JM |
7387 | /* Enable/disable target terminal ownership. Most targets can use |
7388 | terminal groups to control terminal ownership. Remote targets are | |
7389 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 7390 | is required. */ |
6426a772 | 7391 | |
f6ac5f3d PA |
7392 | void |
7393 | remote_target::terminal_inferior () | |
6426a772 | 7394 | { |
6426a772 JM |
7395 | /* NOTE: At this point we could also register our selves as the |
7396 | recipient of all input. Any characters typed could then be | |
23860348 | 7397 | passed on down to the target. */ |
6426a772 JM |
7398 | } |
7399 | ||
f6ac5f3d PA |
7400 | void |
7401 | remote_target::terminal_ours () | |
6426a772 | 7402 | { |
6426a772 JM |
7403 | } |
7404 | ||
176a6961 | 7405 | static void |
05be00a8 | 7406 | remote_console_output (const char *msg) |
c906108c | 7407 | { |
05be00a8 | 7408 | const char *p; |
c906108c | 7409 | |
c5aa993b | 7410 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
7411 | { |
7412 | char tb[2]; | |
7413 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 7414 | |
c906108c SS |
7415 | tb[0] = c; |
7416 | tb[1] = 0; | |
da5bd37e | 7417 | gdb_stdtarg->puts (tb); |
c906108c | 7418 | } |
da5bd37e | 7419 | gdb_stdtarg->flush (); |
00db5b94 | 7420 | } |
74531fed | 7421 | |
221e1a37 PA |
7422 | /* Return the length of the stop reply queue. */ |
7423 | ||
6b8edb51 PA |
7424 | int |
7425 | remote_target::stop_reply_queue_length () | |
221e1a37 | 7426 | { |
6b8edb51 | 7427 | remote_state *rs = get_remote_state (); |
953edf2b | 7428 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
7429 | } |
7430 | ||
cb8c24b6 | 7431 | static void |
6b8edb51 | 7432 | remote_notif_stop_parse (remote_target *remote, |
42938c1a | 7433 | const notif_client *self, const char *buf, |
722247f1 YQ |
7434 | struct notif_event *event) |
7435 | { | |
6b8edb51 | 7436 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
7437 | } |
7438 | ||
7439 | static void | |
6b8edb51 | 7440 | remote_notif_stop_ack (remote_target *remote, |
42938c1a | 7441 | const notif_client *self, const char *buf, |
722247f1 YQ |
7442 | struct notif_event *event) |
7443 | { | |
7444 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
7445 | ||
7446 | /* acknowledge */ | |
6b8edb51 | 7447 | putpkt (remote, self->ack_command); |
722247f1 | 7448 | |
b0083dd7 PA |
7449 | /* Kind can be TARGET_WAITKIND_IGNORE if we have meanwhile discarded |
7450 | the notification. It was left in the queue because we need to | |
7451 | acknowledge it and pull the rest of the notifications out. */ | |
183be222 | 7452 | if (stop_reply->ws.kind () != TARGET_WAITKIND_IGNORE) |
b0083dd7 | 7453 | remote->push_stop_reply (stop_reply); |
722247f1 YQ |
7454 | } |
7455 | ||
7456 | static int | |
6b8edb51 | 7457 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
42938c1a | 7458 | const notif_client *self) |
722247f1 YQ |
7459 | { |
7460 | /* We can't get pending events in remote_notif_process for | |
7461 | notification stop, and we have to do this in remote_wait_ns | |
7462 | instead. If we fetch all queued events from stub, remote stub | |
7463 | may exit and we have no chance to process them back in | |
7464 | remote_wait_ns. */ | |
6b8edb51 | 7465 | remote_state *rs = remote->get_remote_state (); |
92b98b37 | 7466 | rs->mark_async_event_handler (); |
722247f1 YQ |
7467 | return 0; |
7468 | } | |
7469 | ||
32603266 | 7470 | stop_reply::~stop_reply () |
722247f1 | 7471 | { |
32603266 TT |
7472 | for (cached_reg_t ® : regcache) |
7473 | xfree (reg.data); | |
722247f1 YQ |
7474 | } |
7475 | ||
32603266 TT |
7476 | static notif_event_up |
7477 | remote_notif_stop_alloc_reply () | |
722247f1 | 7478 | { |
32603266 | 7479 | return notif_event_up (new struct stop_reply ()); |
722247f1 YQ |
7480 | } |
7481 | ||
7482 | /* A client of notification Stop. */ | |
7483 | ||
42938c1a | 7484 | const notif_client notif_client_stop = |
722247f1 YQ |
7485 | { |
7486 | "Stop", | |
7487 | "vStopped", | |
7488 | remote_notif_stop_parse, | |
7489 | remote_notif_stop_ack, | |
7490 | remote_notif_stop_can_get_pending_events, | |
7491 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 7492 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
7493 | }; |
7494 | ||
cbb8991c DB |
7495 | /* If CONTEXT contains any fork child threads that have not been |
7496 | reported yet, remove them from the CONTEXT list. If such a | |
7497 | thread exists it is because we are stopped at a fork catchpoint | |
7498 | and have not yet called follow_fork, which will set up the | |
7499 | host-side data structures for the new process. */ | |
7500 | ||
6b8edb51 PA |
7501 | void |
7502 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c | 7503 | { |
42938c1a | 7504 | const notif_client *notif = ¬if_client_stop; |
cbb8991c DB |
7505 | |
7506 | /* For any threads stopped at a fork event, remove the corresponding | |
7507 | fork child threads from the CONTEXT list. */ | |
5b6d1e4f | 7508 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c | 7509 | { |
28561a65 SM |
7510 | const target_waitstatus *ws = thread_pending_fork_status (thread); |
7511 | ||
7512 | if (ws == nullptr) | |
7513 | continue; | |
cbb8991c | 7514 | |
28561a65 | 7515 | context->remove_thread (ws->child_ptid ()); |
cbb8991c DB |
7516 | } |
7517 | ||
7518 | /* Check for any pending fork events (not reported or processed yet) | |
7519 | in process PID and remove those fork child threads from the | |
7520 | CONTEXT list as well. */ | |
7521 | remote_notif_get_pending_events (notif); | |
953edf2b | 7522 | for (auto &event : get_remote_state ()->stop_reply_queue) |
183be222 | 7523 | if (event->ws.kind () == TARGET_WAITKIND_FORKED |
3890f02a | 7524 | || event->ws.kind () == TARGET_WAITKIND_VFORKED) |
183be222 | 7525 | context->remove_thread (event->ws.child_ptid ()); |
3890f02a SM |
7526 | else if (event->ws.kind () == TARGET_WAITKIND_THREAD_EXITED) |
7527 | context->remove_thread (event->ptid); | |
85ad3aaf PA |
7528 | } |
7529 | ||
2f63ec5c AB |
7530 | /* Check whether any event pending in the vStopped queue would prevent a |
7531 | global or process wildcard vCont action. Set *may_global_wildcard to | |
7532 | false if we can't do a global wildcard (vCont;c), and clear the event | |
7533 | inferior's may_wildcard_vcont flag if we can't do a process-wide | |
7534 | wildcard resume (vCont;c:pPID.-1). */ | |
85ad3aaf | 7535 | |
6b8edb51 PA |
7536 | void |
7537 | remote_target::check_pending_events_prevent_wildcard_vcont | |
2f63ec5c | 7538 | (bool *may_global_wildcard) |
85ad3aaf | 7539 | { |
42938c1a | 7540 | const notif_client *notif = ¬if_client_stop; |
85ad3aaf PA |
7541 | |
7542 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7543 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7544 | { | |
183be222 SM |
7545 | if (event->ws.kind () == TARGET_WAITKIND_NO_RESUMED |
7546 | || event->ws.kind () == TARGET_WAITKIND_NO_HISTORY) | |
953edf2b | 7547 | continue; |
85ad3aaf | 7548 | |
183be222 SM |
7549 | if (event->ws.kind () == TARGET_WAITKIND_FORKED |
7550 | || event->ws.kind () == TARGET_WAITKIND_VFORKED) | |
2f63ec5c | 7551 | *may_global_wildcard = false; |
722247f1 | 7552 | |
953edf2b TT |
7553 | /* This may be the first time we heard about this process. |
7554 | Regardless, we must not do a global wildcard resume, otherwise | |
7555 | we'd resume this process too. */ | |
2f63ec5c | 7556 | *may_global_wildcard = false; |
323fd5b9 PA |
7557 | if (event->ptid != null_ptid) |
7558 | { | |
7559 | inferior *inf = find_inferior_ptid (this, event->ptid); | |
7560 | if (inf != NULL) | |
7561 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
7562 | } | |
722247f1 | 7563 | } |
722247f1 YQ |
7564 | } |
7565 | ||
f48ff2a7 | 7566 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7567 | |
6b8edb51 PA |
7568 | void |
7569 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7570 | { |
f48ff2a7 YQ |
7571 | struct stop_reply *reply; |
7572 | struct remote_state *rs = get_remote_state (); | |
7573 | struct remote_notif_state *rns = rs->notif_state; | |
7574 | ||
7575 | /* This function can be notified when an inferior exists. When the | |
7576 | target is not remote, the notification state is NULL. */ | |
7577 | if (rs->remote_desc == NULL) | |
7578 | return; | |
7579 | ||
7580 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7581 | |
74531fed | 7582 | /* Discard the in-flight notification. */ |
e99b03dc | 7583 | if (reply != NULL && reply->ptid.pid () == inf->pid) |
74531fed | 7584 | { |
b0083dd7 PA |
7585 | /* Leave the notification pending, since the server expects that |
7586 | we acknowledge it with vStopped. But clear its contents, so | |
7587 | that later on when we acknowledge it, we also discard it. */ | |
df5ad102 SM |
7588 | remote_debug_printf |
7589 | ("discarding in-flight notification: ptid: %s, ws: %s\n", | |
7590 | reply->ptid.to_string().c_str(), | |
7591 | reply->ws.to_string ().c_str ()); | |
183be222 | 7592 | reply->ws.set_ignore (); |
74531fed | 7593 | } |
c906108c | 7594 | |
74531fed PA |
7595 | /* Discard the stop replies we have already pulled with |
7596 | vStopped. */ | |
953edf2b TT |
7597 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7598 | rs->stop_reply_queue.end (), | |
7599 | [=] (const stop_reply_up &event) | |
7600 | { | |
7601 | return event->ptid.pid () == inf->pid; | |
7602 | }); | |
df5ad102 SM |
7603 | for (auto it = iter; it != rs->stop_reply_queue.end (); ++it) |
7604 | remote_debug_printf | |
7605 | ("discarding queued stop reply: ptid: %s, ws: %s\n", | |
1720b64f AB |
7606 | (*it)->ptid.to_string().c_str(), |
7607 | (*it)->ws.to_string ().c_str ()); | |
953edf2b | 7608 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); |
bcc75809 YQ |
7609 | } |
7610 | ||
7611 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7612 | |
6b8edb51 PA |
7613 | void |
7614 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7615 | { |
6b8edb51 | 7616 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7617 | |
f48ff2a7 YQ |
7618 | /* Discard the stop replies we have already pulled with |
7619 | vStopped. */ | |
953edf2b TT |
7620 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7621 | rs->stop_reply_queue.end (), | |
7622 | [=] (const stop_reply_up &event) | |
7623 | { | |
7624 | return event->rs == rs; | |
7625 | }); | |
7626 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7627 | } |
43ff13b4 | 7628 | |
722247f1 YQ |
7629 | /* Remove the first reply in 'stop_reply_queue' which matches |
7630 | PTID. */ | |
2e9f7625 | 7631 | |
6b8edb51 PA |
7632 | struct stop_reply * |
7633 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7634 | { |
953edf2b | 7635 | remote_state *rs = get_remote_state (); |
722247f1 | 7636 | |
953edf2b TT |
7637 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7638 | rs->stop_reply_queue.end (), | |
7639 | [=] (const stop_reply_up &event) | |
7640 | { | |
7641 | return event->ptid.matches (ptid); | |
7642 | }); | |
7643 | struct stop_reply *result; | |
7644 | if (iter == rs->stop_reply_queue.end ()) | |
7645 | result = nullptr; | |
7646 | else | |
7647 | { | |
7648 | result = iter->release (); | |
7649 | rs->stop_reply_queue.erase (iter); | |
7650 | } | |
722247f1 | 7651 | |
722247f1 | 7652 | if (notif_debug) |
6cb06a8c TT |
7653 | gdb_printf (gdb_stdlog, |
7654 | "notif: discard queued event: 'Stop' in %s\n", | |
7655 | ptid.to_string ().c_str ()); | |
a744cf53 | 7656 | |
953edf2b | 7657 | return result; |
74531fed | 7658 | } |
75c99385 | 7659 | |
74531fed PA |
7660 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7661 | remove it from the queue, and return it. Returns NULL if none is | |
7662 | found. If there are still queued events left to process, tell the | |
7663 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7664 | |
6b8edb51 PA |
7665 | struct stop_reply * |
7666 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7667 | { |
953edf2b | 7668 | remote_state *rs = get_remote_state (); |
722247f1 | 7669 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7670 | |
4f626cad | 7671 | if (!rs->stop_reply_queue.empty () && target_can_async_p ()) |
6b8edb51 | 7672 | { |
6b8edb51 | 7673 | /* There's still at least an event left. */ |
92b98b37 | 7674 | rs->mark_async_event_handler (); |
6b8edb51 | 7675 | } |
74531fed | 7676 | |
722247f1 | 7677 | return r; |
74531fed PA |
7678 | } |
7679 | ||
7680 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7681 | know that we now have at least one queued event left to pass to the | |
7682 | core side, tell the event loop to get back to target_wait soon. */ | |
7683 | ||
6b8edb51 PA |
7684 | void |
7685 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7686 | { |
6b8edb51 | 7687 | remote_state *rs = get_remote_state (); |
953edf2b | 7688 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7689 | |
722247f1 | 7690 | if (notif_debug) |
6cb06a8c TT |
7691 | gdb_printf (gdb_stdlog, |
7692 | "notif: push 'Stop' %s to queue %d\n", | |
7693 | new_event->ptid.to_string ().c_str (), | |
7694 | int (rs->stop_reply_queue.size ())); | |
74531fed | 7695 | |
4f626cad AB |
7696 | /* Mark the pending event queue only if async mode is currently enabled. |
7697 | If async mode is not currently enabled, then, if it later becomes | |
7698 | enabled, and there are events in this queue, we will mark the event | |
7699 | token at that point, see remote_target::async. */ | |
7700 | if (target_is_async_p ()) | |
92b98b37 | 7701 | rs->mark_async_event_handler (); |
74531fed PA |
7702 | } |
7703 | ||
7704 | /* Returns true if we have a stop reply for PTID. */ | |
7705 | ||
6b8edb51 PA |
7706 | int |
7707 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7708 | { |
6b8edb51 | 7709 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7710 | for (auto &event : rs->stop_reply_queue) |
7711 | if (ptid == event->ptid | |
183be222 | 7712 | && event->ws.kind () == TARGET_WAITKIND_STOPPED) |
953edf2b TT |
7713 | return 1; |
7714 | return 0; | |
74531fed PA |
7715 | } |
7716 | ||
26d56a93 SL |
7717 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7718 | starting with P and ending with PEND matches PREFIX. */ | |
7719 | ||
7720 | static int | |
7721 | strprefix (const char *p, const char *pend, const char *prefix) | |
7722 | { | |
7723 | for ( ; p < pend; p++, prefix++) | |
7724 | if (*p != *prefix) | |
7725 | return 0; | |
7726 | return *prefix == '\0'; | |
7727 | } | |
7728 | ||
74531fed PA |
7729 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7730 | result is stored in EVENT, or throws an error. */ | |
7731 | ||
6b8edb51 | 7732 | void |
bb277751 | 7733 | remote_target::remote_parse_stop_reply (const char *buf, stop_reply *event) |
74531fed | 7734 | { |
5cd63fda | 7735 | remote_arch_state *rsa = NULL; |
74531fed | 7736 | ULONGEST addr; |
256642e8 | 7737 | const char *p; |
94585166 | 7738 | int skipregs = 0; |
74531fed PA |
7739 | |
7740 | event->ptid = null_ptid; | |
bcc75809 | 7741 | event->rs = get_remote_state (); |
183be222 | 7742 | event->ws.set_ignore (); |
f7e6eed5 | 7743 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
32603266 | 7744 | event->regcache.clear (); |
dc146f7c | 7745 | event->core = -1; |
74531fed PA |
7746 | |
7747 | switch (buf[0]) | |
7748 | { | |
7749 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7750 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7751 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7752 | ss = signal number | |
7753 | n... = register number | |
7754 | r... = register contents | |
7755 | */ | |
7756 | ||
7757 | p = &buf[3]; /* after Txx */ | |
7758 | while (*p) | |
7759 | { | |
256642e8 | 7760 | const char *p1; |
cea39f65 | 7761 | int fieldsize; |
43ff13b4 | 7762 | |
1f10ba14 PA |
7763 | p1 = strchr (p, ':'); |
7764 | if (p1 == NULL) | |
7765 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7766 | Packet: '%s'\n"), | |
7767 | p, buf); | |
7768 | if (p == p1) | |
7769 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7770 | Packet: '%s'\n"), | |
7771 | p, buf); | |
3c3bea1c | 7772 | |
1f10ba14 PA |
7773 | /* Some "registers" are actually extended stop information. |
7774 | Note if you're adding a new entry here: GDB 7.9 and | |
7775 | earlier assume that all register "numbers" that start | |
7776 | with an hex digit are real register numbers. Make sure | |
7777 | the server only sends such a packet if it knows the | |
7778 | client understands it. */ | |
c8e38a49 | 7779 | |
26d56a93 | 7780 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7781 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7782 | else if (strprefix (p, p1, "syscall_entry")) |
7783 | { | |
7784 | ULONGEST sysno; | |
7785 | ||
82075af2 | 7786 | p = unpack_varlen_hex (++p1, &sysno); |
183be222 | 7787 | event->ws.set_syscall_entry ((int) sysno); |
82075af2 JS |
7788 | } |
7789 | else if (strprefix (p, p1, "syscall_return")) | |
7790 | { | |
7791 | ULONGEST sysno; | |
7792 | ||
82075af2 | 7793 | p = unpack_varlen_hex (++p1, &sysno); |
183be222 | 7794 | event->ws.set_syscall_return ((int) sysno); |
82075af2 | 7795 | } |
26d56a93 SL |
7796 | else if (strprefix (p, p1, "watch") |
7797 | || strprefix (p, p1, "rwatch") | |
7798 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7799 | { |
f7e6eed5 | 7800 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7801 | p = unpack_varlen_hex (++p1, &addr); |
7802 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7803 | } |
26d56a93 | 7804 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7805 | { |
7806 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7807 | ||
7808 | /* Make sure the stub doesn't forget to indicate support | |
7809 | with qSupported. */ | |
ff52c073 CS |
7810 | if (m_features.packet_support (PACKET_swbreak_feature) |
7811 | != PACKET_ENABLE) | |
f7e6eed5 PA |
7812 | error (_("Unexpected swbreak stop reason")); |
7813 | ||
7814 | /* The value part is documented as "must be empty", | |
7815 | though we ignore it, in case we ever decide to make | |
7816 | use of it in a backward compatible way. */ | |
8424cc97 | 7817 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7818 | } |
26d56a93 | 7819 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7820 | { |
7821 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7822 | ||
7823 | /* Make sure the stub doesn't forget to indicate support | |
7824 | with qSupported. */ | |
ff52c073 CS |
7825 | if (m_features.packet_support (PACKET_hwbreak_feature) |
7826 | != PACKET_ENABLE) | |
f7e6eed5 PA |
7827 | error (_("Unexpected hwbreak stop reason")); |
7828 | ||
7829 | /* See above. */ | |
8424cc97 | 7830 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7831 | } |
26d56a93 | 7832 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7833 | { |
183be222 | 7834 | event->ws.set_loaded (); |
8424cc97 | 7835 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7836 | } |
26d56a93 | 7837 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 | 7838 | { |
183be222 | 7839 | event->ws.set_no_history (); |
1f10ba14 PA |
7840 | /* p1 will indicate "begin" or "end", but it makes |
7841 | no difference for now, so ignore it. */ | |
8424cc97 | 7842 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7843 | } |
26d56a93 | 7844 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7845 | { |
7846 | ULONGEST c; | |
a744cf53 | 7847 | |
1f10ba14 PA |
7848 | p = unpack_varlen_hex (++p1, &c); |
7849 | event->core = c; | |
cea39f65 | 7850 | } |
26d56a93 | 7851 | else if (strprefix (p, p1, "fork")) |
183be222 | 7852 | event->ws.set_forked (read_ptid (++p1, &p)); |
26d56a93 | 7853 | else if (strprefix (p, p1, "vfork")) |
183be222 | 7854 | event->ws.set_vforked (read_ptid (++p1, &p)); |
26d56a93 | 7855 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb | 7856 | { |
183be222 | 7857 | event->ws.set_vfork_done (); |
8424cc97 | 7858 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7859 | } |
6ab24463 | 7860 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7861 | { |
7862 | ULONGEST ignored; | |
94585166 DB |
7863 | int pathlen; |
7864 | ||
7865 | /* Determine the length of the execd pathname. */ | |
7866 | p = unpack_varlen_hex (++p1, &ignored); | |
7867 | pathlen = (p - p1) / 2; | |
7868 | ||
7869 | /* Save the pathname for event reporting and for | |
7870 | the next run command. */ | |
183be222 | 7871 | gdb::unique_xmalloc_ptr<char> pathname |
c6321f19 TT |
7872 | ((char *) xmalloc (pathlen + 1)); |
7873 | hex2bin (p1, (gdb_byte *) pathname.get (), pathlen); | |
183be222 | 7874 | pathname.get ()[pathlen] = '\0'; |
94585166 DB |
7875 | |
7876 | /* This is freed during event handling. */ | |
183be222 | 7877 | event->ws.set_execd (std::move (pathname)); |
94585166 DB |
7878 | |
7879 | /* Skip the registers included in this packet, since | |
7880 | they may be for an architecture different from the | |
7881 | one used by the original program. */ | |
7882 | skipregs = 1; | |
7883 | } | |
65706a29 PA |
7884 | else if (strprefix (p, p1, "create")) |
7885 | { | |
183be222 | 7886 | event->ws.set_thread_created (); |
8424cc97 | 7887 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7888 | } |
cea39f65 MS |
7889 | else |
7890 | { | |
1f10ba14 | 7891 | ULONGEST pnum; |
256642e8 | 7892 | const char *p_temp; |
1f10ba14 | 7893 | |
94585166 DB |
7894 | if (skipregs) |
7895 | { | |
8424cc97 | 7896 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7897 | p++; |
7898 | continue; | |
7899 | } | |
7900 | ||
1f10ba14 PA |
7901 | /* Maybe a real ``P'' register number. */ |
7902 | p_temp = unpack_varlen_hex (p, &pnum); | |
7903 | /* If the first invalid character is the colon, we got a | |
7904 | register number. Otherwise, it's an unknown stop | |
7905 | reason. */ | |
7906 | if (p_temp == p1) | |
7907 | { | |
5cd63fda PA |
7908 | /* If we haven't parsed the event's thread yet, find |
7909 | it now, in order to find the architecture of the | |
7910 | reported expedited registers. */ | |
7911 | if (event->ptid == null_ptid) | |
7912 | { | |
24ed6739 AB |
7913 | /* If there is no thread-id information then leave |
7914 | the event->ptid as null_ptid. Later in | |
7915 | process_stop_reply we will pick a suitable | |
7916 | thread. */ | |
5cd63fda PA |
7917 | const char *thr = strstr (p1 + 1, ";thread:"); |
7918 | if (thr != NULL) | |
7919 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7920 | NULL); | |
5cd63fda PA |
7921 | } |
7922 | ||
7923 | if (rsa == NULL) | |
7924 | { | |
5b6d1e4f PA |
7925 | inferior *inf |
7926 | = (event->ptid == null_ptid | |
7927 | ? NULL | |
7928 | : find_inferior_ptid (this, event->ptid)); | |
5cd63fda PA |
7929 | /* If this is the first time we learn anything |
7930 | about this process, skip the registers | |
7931 | included in this packet, since we don't yet | |
7932 | know which architecture to use to parse them. | |
7933 | We'll determine the architecture later when | |
7934 | we process the stop reply and retrieve the | |
7935 | target description, via | |
7936 | remote_notice_new_inferior -> | |
7937 | post_create_inferior. */ | |
7938 | if (inf == NULL) | |
7939 | { | |
7940 | p = strchrnul (p1 + 1, ';'); | |
7941 | p++; | |
7942 | continue; | |
7943 | } | |
7944 | ||
27b1f19f | 7945 | event->arch = inf->arch (); |
9d6eea31 | 7946 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7947 | } |
7948 | ||
7949 | packet_reg *reg | |
7950 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7951 | cached_reg_t cached_reg; |
43ff13b4 | 7952 | |
1f10ba14 PA |
7953 | if (reg == NULL) |
7954 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7955 | Packet: '%s'\n"), |
1f10ba14 | 7956 | hex_string (pnum), p, buf); |
c8e38a49 | 7957 | |
1f10ba14 | 7958 | cached_reg.num = reg->regnum; |
d1dff226 | 7959 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7960 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7961 | |
1f10ba14 PA |
7962 | p = p1 + 1; |
7963 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7964 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7965 | p += 2 * fieldsize; |
5cd63fda | 7966 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7967 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7968 | |
32603266 | 7969 | event->regcache.push_back (cached_reg); |
1f10ba14 PA |
7970 | } |
7971 | else | |
7972 | { | |
7973 | /* Not a number. Silently skip unknown optional | |
7974 | info. */ | |
8424cc97 | 7975 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7976 | } |
cea39f65 | 7977 | } |
c8e38a49 | 7978 | |
cea39f65 MS |
7979 | if (*p != ';') |
7980 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7981 | buf, p); | |
7982 | ++p; | |
7983 | } | |
5b5596ff | 7984 | |
183be222 | 7985 | if (event->ws.kind () != TARGET_WAITKIND_IGNORE) |
5b5596ff PA |
7986 | break; |
7987 | ||
c8e38a49 PA |
7988 | /* fall through */ |
7989 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7990 | { |
7991 | int sig; | |
7992 | ||
3a09da41 PA |
7993 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); |
7994 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
183be222 | 7995 | event->ws.set_stopped ((enum gdb_signal) sig); |
3a09da41 | 7996 | else |
183be222 | 7997 | event->ws.set_stopped (GDB_SIGNAL_UNKNOWN); |
3a09da41 | 7998 | } |
c8e38a49 | 7999 | break; |
65706a29 PA |
8000 | case 'w': /* Thread exited. */ |
8001 | { | |
65706a29 PA |
8002 | ULONGEST value; |
8003 | ||
65706a29 | 8004 | p = unpack_varlen_hex (&buf[1], &value); |
183be222 | 8005 | event->ws.set_thread_exited (value); |
65706a29 PA |
8006 | if (*p != ';') |
8007 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 8008 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
8009 | break; |
8010 | } | |
c8e38a49 PA |
8011 | case 'W': /* Target exited. */ |
8012 | case 'X': | |
8013 | { | |
c8e38a49 | 8014 | ULONGEST value; |
82f73884 | 8015 | |
c8e38a49 PA |
8016 | /* GDB used to accept only 2 hex chars here. Stubs should |
8017 | only send more if they detect GDB supports multi-process | |
8018 | support. */ | |
8019 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 8020 | |
c8e38a49 PA |
8021 | if (buf[0] == 'W') |
8022 | { | |
8023 | /* The remote process exited. */ | |
183be222 | 8024 | event->ws.set_exited (value); |
c8e38a49 PA |
8025 | } |
8026 | else | |
8027 | { | |
8028 | /* The remote process exited with a signal. */ | |
3a09da41 | 8029 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
183be222 | 8030 | event->ws.set_signalled ((enum gdb_signal) value); |
3a09da41 | 8031 | else |
183be222 | 8032 | event->ws.set_signalled (GDB_SIGNAL_UNKNOWN); |
c8e38a49 | 8033 | } |
82f73884 | 8034 | |
e7af6c70 TBA |
8035 | /* If no process is specified, return null_ptid, and let the |
8036 | caller figure out the right process to use. */ | |
8037 | int pid = 0; | |
c8e38a49 PA |
8038 | if (*p == '\0') |
8039 | ; | |
8040 | else if (*p == ';') | |
8041 | { | |
8042 | p++; | |
8043 | ||
0b24eb2d | 8044 | if (*p == '\0') |
82f73884 | 8045 | ; |
61012eef | 8046 | else if (startswith (p, "process:")) |
82f73884 | 8047 | { |
c8e38a49 | 8048 | ULONGEST upid; |
a744cf53 | 8049 | |
c8e38a49 PA |
8050 | p += sizeof ("process:") - 1; |
8051 | unpack_varlen_hex (p, &upid); | |
8052 | pid = upid; | |
82f73884 PA |
8053 | } |
8054 | else | |
8055 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 8056 | } |
c8e38a49 PA |
8057 | else |
8058 | error (_("unknown stop reply packet: %s"), buf); | |
f2907e49 | 8059 | event->ptid = ptid_t (pid); |
74531fed PA |
8060 | } |
8061 | break; | |
f2faf941 | 8062 | case 'N': |
183be222 | 8063 | event->ws.set_no_resumed (); |
f2faf941 PA |
8064 | event->ptid = minus_one_ptid; |
8065 | break; | |
74531fed | 8066 | } |
74531fed PA |
8067 | } |
8068 | ||
722247f1 YQ |
8069 | /* When the stub wants to tell GDB about a new notification reply, it |
8070 | sends a notification (%Stop, for example). Those can come it at | |
8071 | any time, hence, we have to make sure that any pending | |
8072 | putpkt/getpkt sequence we're making is finished, before querying | |
8073 | the stub for more events with the corresponding ack command | |
8074 | (vStopped, for example). E.g., if we started a vStopped sequence | |
8075 | immediately upon receiving the notification, something like this | |
8076 | could happen: | |
74531fed PA |
8077 | |
8078 | 1.1) --> Hg 1 | |
8079 | 1.2) <-- OK | |
8080 | 1.3) --> g | |
8081 | 1.4) <-- %Stop | |
8082 | 1.5) --> vStopped | |
8083 | 1.6) <-- (registers reply to step #1.3) | |
8084 | ||
8085 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
8086 | query. | |
8087 | ||
796cb314 | 8088 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
8089 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
8090 | doing whatever we were doing: | |
8091 | ||
8092 | 2.1) --> Hg 1 | |
8093 | 2.2) <-- OK | |
8094 | 2.3) --> g | |
8095 | 2.4) <-- %Stop | |
8096 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
8097 | 2.5) <-- (registers reply to step #2.3) | |
8098 | ||
85102364 | 8099 | Eventually after step #2.5, we return to the event loop, which |
74531fed PA |
8100 | notices there's an event on the |
8101 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
8102 | associated callback --- the function below. At this point, we're | |
8103 | always safe to start a vStopped sequence. : | |
8104 | ||
8105 | 2.6) --> vStopped | |
8106 | 2.7) <-- T05 thread:2 | |
8107 | 2.8) --> vStopped | |
8108 | 2.9) --> OK | |
8109 | */ | |
8110 | ||
722247f1 | 8111 | void |
42938c1a | 8112 | remote_target::remote_notif_get_pending_events (const notif_client *nc) |
74531fed PA |
8113 | { |
8114 | struct remote_state *rs = get_remote_state (); | |
74531fed | 8115 | |
f48ff2a7 | 8116 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 8117 | { |
722247f1 | 8118 | if (notif_debug) |
6cb06a8c TT |
8119 | gdb_printf (gdb_stdlog, |
8120 | "notif: process: '%s' ack pending event\n", | |
8121 | nc->name); | |
74531fed | 8122 | |
722247f1 | 8123 | /* acknowledge */ |
8d64371b TT |
8124 | nc->ack (this, nc, rs->buf.data (), |
8125 | rs->notif_state->pending_event[nc->id]); | |
f48ff2a7 | 8126 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
8127 | |
8128 | while (1) | |
8129 | { | |
aa7b36b8 | 8130 | getpkt (&rs->buf); |
8d64371b | 8131 | if (strcmp (rs->buf.data (), "OK") == 0) |
74531fed PA |
8132 | break; |
8133 | else | |
8d64371b | 8134 | remote_notif_ack (this, nc, rs->buf.data ()); |
74531fed PA |
8135 | } |
8136 | } | |
722247f1 YQ |
8137 | else |
8138 | { | |
8139 | if (notif_debug) | |
6cb06a8c TT |
8140 | gdb_printf (gdb_stdlog, |
8141 | "notif: process: '%s' no pending reply\n", | |
8142 | nc->name); | |
722247f1 | 8143 | } |
74531fed PA |
8144 | } |
8145 | ||
6b8edb51 PA |
8146 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
8147 | avoid having to export the whole remote_target class. */ | |
8148 | ||
8149 | void | |
42938c1a | 8150 | remote_notif_get_pending_events (remote_target *remote, const notif_client *nc) |
6b8edb51 PA |
8151 | { |
8152 | remote->remote_notif_get_pending_events (nc); | |
8153 | } | |
8154 | ||
8f66807b AB |
8155 | /* Called from process_stop_reply when the stop packet we are responding |
8156 | to didn't include a process-id or thread-id. STATUS is the stop event | |
8157 | we are responding to. | |
8158 | ||
8159 | It is the task of this function to select a suitable thread (or process) | |
8160 | and return its ptid, this is the thread (or process) we will assume the | |
8161 | stop event came from. | |
8162 | ||
8163 | In some cases there isn't really any choice about which thread (or | |
8164 | process) is selected, a basic remote with a single process containing a | |
8165 | single thread might choose not to send any process-id or thread-id in | |
8166 | its stop packets, this function will select and return the one and only | |
8167 | thread. | |
8168 | ||
8169 | However, if a target supports multiple threads (or processes) and still | |
8170 | doesn't include a thread-id (or process-id) in its stop packet then | |
8171 | first, this is a badly behaving target, and second, we're going to have | |
8172 | to select a thread (or process) at random and use that. This function | |
8173 | will print a warning to the user if it detects that there is the | |
8174 | possibility that GDB is guessing which thread (or process) to | |
8175 | report. | |
8176 | ||
8177 | Note that this is called before GDB fetches the updated thread list from the | |
8178 | target. So it's possible for the stop reply to be ambiguous and for GDB to | |
8179 | not realize it. For example, if there's initially one thread, the target | |
8180 | spawns a second thread, and then sends a stop reply without an id that | |
8181 | concerns the first thread. GDB will assume the stop reply is about the | |
8182 | first thread - the only thread it knows about - without printing a warning. | |
8183 | Anyway, if the remote meant for the stop reply to be about the second thread, | |
8184 | then it would be really broken, because GDB doesn't know about that thread | |
8185 | yet. */ | |
74531fed | 8186 | |
6b8edb51 | 8187 | ptid_t |
8f66807b | 8188 | remote_target::select_thread_for_ambiguous_stop_reply |
c272a98c | 8189 | (const target_waitstatus &status) |
74531fed | 8190 | { |
4351271e AB |
8191 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
8192 | ||
8f66807b AB |
8193 | /* Some stop events apply to all threads in an inferior, while others |
8194 | only apply to a single thread. */ | |
8195 | bool process_wide_stop | |
c272a98c SM |
8196 | = (status.kind () == TARGET_WAITKIND_EXITED |
8197 | || status.kind () == TARGET_WAITKIND_SIGNALLED); | |
74531fed | 8198 | |
4351271e AB |
8199 | remote_debug_printf ("process_wide_stop = %d", process_wide_stop); |
8200 | ||
8f66807b AB |
8201 | thread_info *first_resumed_thread = nullptr; |
8202 | bool ambiguous = false; | |
74531fed | 8203 | |
8f66807b AB |
8204 | /* Consider all non-exited threads of the target, find the first resumed |
8205 | one. */ | |
8206 | for (thread_info *thr : all_non_exited_threads (this)) | |
24ed6739 | 8207 | { |
8f66807b | 8208 | remote_thread_info *remote_thr = get_remote_thread_info (thr); |
cada5fc9 | 8209 | |
a6c11cbb | 8210 | if (remote_thr->get_resume_state () != resume_state::RESUMED) |
8f66807b | 8211 | continue; |
24ed6739 | 8212 | |
8f66807b AB |
8213 | if (first_resumed_thread == nullptr) |
8214 | first_resumed_thread = thr; | |
8215 | else if (!process_wide_stop | |
8216 | || first_resumed_thread->ptid.pid () != thr->ptid.pid ()) | |
8217 | ambiguous = true; | |
8218 | } | |
8219 | ||
b622494e AB |
8220 | gdb_assert (first_resumed_thread != nullptr); |
8221 | ||
4351271e AB |
8222 | remote_debug_printf ("first resumed thread is %s", |
8223 | pid_to_str (first_resumed_thread->ptid).c_str ()); | |
8224 | remote_debug_printf ("is this guess ambiguous? = %d", ambiguous); | |
8225 | ||
8f66807b AB |
8226 | /* Warn if the remote target is sending ambiguous stop replies. */ |
8227 | if (ambiguous) | |
8228 | { | |
8229 | static bool warned = false; | |
8230 | ||
8231 | if (!warned) | |
8232 | { | |
8233 | /* If you are seeing this warning then the remote target has | |
8234 | stopped without specifying a thread-id, but the target | |
8235 | does have multiple threads (or inferiors), and so GDB is | |
8236 | having to guess which thread stopped. | |
8237 | ||
8238 | Examples of what might cause this are the target sending | |
8239 | and 'S' stop packet, or a 'T' stop packet and not | |
8240 | including a thread-id. | |
8241 | ||
8242 | Additionally, the target might send a 'W' or 'X packet | |
8243 | without including a process-id, when the target has | |
8244 | multiple running inferiors. */ | |
8245 | if (process_wide_stop) | |
8246 | warning (_("multi-inferior target stopped without " | |
8247 | "sending a process-id, using first " | |
8248 | "non-exited inferior")); | |
cada5fc9 | 8249 | else |
8f66807b AB |
8250 | warning (_("multi-threaded target stopped without " |
8251 | "sending a thread-id, using first " | |
8252 | "non-exited thread")); | |
8253 | warned = true; | |
24ed6739 | 8254 | } |
24ed6739 | 8255 | } |
74531fed | 8256 | |
8f66807b AB |
8257 | /* If this is a stop for all threads then don't use a particular threads |
8258 | ptid, instead create a new ptid where only the pid field is set. */ | |
8259 | if (process_wide_stop) | |
8260 | return ptid_t (first_resumed_thread->ptid.pid ()); | |
8261 | else | |
8262 | return first_resumed_thread->ptid; | |
8263 | } | |
8264 | ||
8265 | /* Called when it is decided that STOP_REPLY holds the info of the | |
8266 | event that is to be returned to the core. This function always | |
8267 | destroys STOP_REPLY. */ | |
8268 | ||
8269 | ptid_t | |
8270 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
8271 | struct target_waitstatus *status) | |
8272 | { | |
8273 | *status = stop_reply->ws; | |
8274 | ptid_t ptid = stop_reply->ptid; | |
8275 | ||
8276 | /* If no thread/process was reported by the stub then select a suitable | |
8277 | thread/process. */ | |
8278 | if (ptid == null_ptid) | |
c272a98c | 8279 | ptid = select_thread_for_ambiguous_stop_reply (*status); |
8f66807b AB |
8280 | gdb_assert (ptid != null_ptid); |
8281 | ||
183be222 SM |
8282 | if (status->kind () != TARGET_WAITKIND_EXITED |
8283 | && status->kind () != TARGET_WAITKIND_SIGNALLED | |
8284 | && status->kind () != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 8285 | { |
5f3563ea | 8286 | /* Expedited registers. */ |
32603266 | 8287 | if (!stop_reply->regcache.empty ()) |
5f3563ea | 8288 | { |
217f1f79 | 8289 | struct regcache *regcache |
5b6d1e4f | 8290 | = get_thread_arch_regcache (this, ptid, stop_reply->arch); |
5f3563ea | 8291 | |
32603266 TT |
8292 | for (cached_reg_t ® : stop_reply->regcache) |
8293 | { | |
8294 | regcache->raw_supply (reg.num, reg.data); | |
8295 | xfree (reg.data); | |
8296 | } | |
d1dff226 | 8297 | |
32603266 | 8298 | stop_reply->regcache.clear (); |
5f3563ea | 8299 | } |
74531fed | 8300 | |
8a82de58 | 8301 | remote_notice_new_inferior (ptid, false); |
5b6d1e4f | 8302 | remote_thread_info *remote_thr = get_remote_thread_info (this, ptid); |
799a2abe PA |
8303 | remote_thr->core = stop_reply->core; |
8304 | remote_thr->stop_reason = stop_reply->stop_reason; | |
8305 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
c9d22089 SM |
8306 | |
8307 | if (target_is_non_stop_p ()) | |
8308 | { | |
8309 | /* If the target works in non-stop mode, a stop-reply indicates that | |
8310 | only this thread stopped. */ | |
8311 | remote_thr->set_not_resumed (); | |
8312 | } | |
8313 | else | |
8314 | { | |
8315 | /* If the target works in all-stop mode, a stop-reply indicates that | |
8316 | all the target's threads stopped. */ | |
8317 | for (thread_info *tp : all_non_exited_threads (this)) | |
8318 | get_remote_thread_info (tp)->set_not_resumed (); | |
8319 | } | |
74531fed PA |
8320 | } |
8321 | ||
32603266 | 8322 | delete stop_reply; |
74531fed PA |
8323 | return ptid; |
8324 | } | |
8325 | ||
8326 | /* The non-stop mode version of target_wait. */ | |
8327 | ||
6b8edb51 | 8328 | ptid_t |
b60cea74 TT |
8329 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, |
8330 | target_wait_flags options) | |
74531fed PA |
8331 | { |
8332 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
8333 | struct stop_reply *stop_reply; |
8334 | int ret; | |
8756b726 | 8335 | bool is_notif = false; |
74531fed PA |
8336 | |
8337 | /* If in non-stop mode, get out of getpkt even if a | |
8338 | notification is received. */ | |
8339 | ||
a60f93c7 | 8340 | ret = getpkt (&rs->buf, false /* forever */, &is_notif); |
74531fed PA |
8341 | while (1) |
8342 | { | |
fee9eda9 | 8343 | if (ret != -1 && !is_notif) |
74531fed PA |
8344 | switch (rs->buf[0]) |
8345 | { | |
8346 | case 'E': /* Error of some sort. */ | |
8347 | /* We're out of sync with the target now. Did it continue | |
8348 | or not? We can't tell which thread it was in non-stop, | |
8349 | so just ignore this. */ | |
8d64371b | 8350 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
74531fed PA |
8351 | break; |
8352 | case 'O': /* Console output. */ | |
8d64371b | 8353 | remote_console_output (&rs->buf[1]); |
74531fed PA |
8354 | break; |
8355 | default: | |
8d64371b | 8356 | warning (_("Invalid remote reply: %s"), rs->buf.data ()); |
74531fed PA |
8357 | break; |
8358 | } | |
8359 | ||
8360 | /* Acknowledge a pending stop reply that may have arrived in the | |
8361 | mean time. */ | |
f48ff2a7 | 8362 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 8363 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
8364 | |
8365 | /* If indeed we noticed a stop reply, we're done. */ | |
8366 | stop_reply = queued_stop_reply (ptid); | |
8367 | if (stop_reply != NULL) | |
8368 | return process_stop_reply (stop_reply, status); | |
8369 | ||
47608cb1 | 8370 | /* Still no event. If we're just polling for an event, then |
74531fed | 8371 | return to the event loop. */ |
47608cb1 | 8372 | if (options & TARGET_WNOHANG) |
74531fed | 8373 | { |
183be222 | 8374 | status->set_ignore (); |
74531fed PA |
8375 | return minus_one_ptid; |
8376 | } | |
8377 | ||
47608cb1 | 8378 | /* Otherwise do a blocking wait. */ |
a60f93c7 | 8379 | ret = getpkt (&rs->buf, true /* forever */, &is_notif); |
74531fed PA |
8380 | } |
8381 | } | |
8382 | ||
31ba933e PA |
8383 | /* Return the first resumed thread. */ |
8384 | ||
8385 | static ptid_t | |
5b6d1e4f | 8386 | first_remote_resumed_thread (remote_target *target) |
31ba933e | 8387 | { |
5b6d1e4f | 8388 | for (thread_info *tp : all_non_exited_threads (target, minus_one_ptid)) |
7846f3aa | 8389 | if (tp->resumed ()) |
31ba933e PA |
8390 | return tp->ptid; |
8391 | return null_ptid; | |
8392 | } | |
8393 | ||
74531fed PA |
8394 | /* Wait until the remote machine stops, then return, storing status in |
8395 | STATUS just as `wait' would. */ | |
8396 | ||
6b8edb51 | 8397 | ptid_t |
b60cea74 TT |
8398 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, |
8399 | target_wait_flags options) | |
74531fed PA |
8400 | { |
8401 | struct remote_state *rs = get_remote_state (); | |
74531fed | 8402 | ptid_t event_ptid = null_ptid; |
cea39f65 | 8403 | char *buf; |
74531fed PA |
8404 | struct stop_reply *stop_reply; |
8405 | ||
47608cb1 PA |
8406 | again: |
8407 | ||
183be222 | 8408 | status->set_ignore (); |
74531fed PA |
8409 | |
8410 | stop_reply = queued_stop_reply (ptid); | |
8411 | if (stop_reply != NULL) | |
4f626cad AB |
8412 | { |
8413 | /* None of the paths that push a stop reply onto the queue should | |
8414 | have set the waiting_for_stop_reply flag. */ | |
8415 | gdb_assert (!rs->waiting_for_stop_reply); | |
8416 | event_ptid = process_stop_reply (stop_reply, status); | |
8417 | } | |
74531fed PA |
8418 | else |
8419 | { | |
8756b726 TT |
8420 | bool forever = ((options & TARGET_WNOHANG) == 0 |
8421 | && rs->wait_forever_enabled_p); | |
567420d1 PA |
8422 | |
8423 | if (!rs->waiting_for_stop_reply) | |
8424 | { | |
183be222 | 8425 | status->set_no_resumed (); |
567420d1 PA |
8426 | return minus_one_ptid; |
8427 | } | |
74531fed | 8428 | |
74531fed PA |
8429 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
8430 | _never_ wait for ever -> test on target_is_async_p(). | |
8431 | However, before we do that we need to ensure that the caller | |
8432 | knows how to take the target into/out of async mode. */ | |
8756b726 | 8433 | bool is_notif; |
a60f93c7 | 8434 | int ret = getpkt (&rs->buf, forever, &is_notif); |
722247f1 YQ |
8435 | |
8436 | /* GDB gets a notification. Return to core as this event is | |
8437 | not interesting. */ | |
8438 | if (ret != -1 && is_notif) | |
8439 | return minus_one_ptid; | |
567420d1 PA |
8440 | |
8441 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
8442 | return minus_one_ptid; | |
74531fed | 8443 | |
4f626cad | 8444 | buf = rs->buf.data (); |
74531fed | 8445 | |
4f626cad AB |
8446 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
8447 | an 'F' or 'O' packet. */ | |
8448 | if (buf[0] != 'F' && buf[0] != 'O') | |
8449 | rs->ctrlc_pending_p = 0; | |
3a29589a | 8450 | |
4f626cad AB |
8451 | switch (buf[0]) |
8452 | { | |
8453 | case 'E': /* Error of some sort. */ | |
8454 | /* We're out of sync with the target now. Did it continue or | |
8455 | not? Not is more likely, so report a stop. */ | |
8456 | rs->waiting_for_stop_reply = 0; | |
29090fb6 | 8457 | |
4f626cad AB |
8458 | warning (_("Remote failure reply: %s"), buf); |
8459 | status->set_stopped (GDB_SIGNAL_0); | |
8460 | break; | |
8461 | case 'F': /* File-I/O request. */ | |
8462 | /* GDB may access the inferior memory while handling the File-I/O | |
8463 | request, but we don't want GDB accessing memory while waiting | |
8464 | for a stop reply. See the comments in putpkt_binary. Set | |
8465 | waiting_for_stop_reply to 0 temporarily. */ | |
8466 | rs->waiting_for_stop_reply = 0; | |
8467 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); | |
8468 | rs->ctrlc_pending_p = 0; | |
8469 | /* GDB handled the File-I/O request, and the target is running | |
8470 | again. Keep waiting for events. */ | |
8471 | rs->waiting_for_stop_reply = 1; | |
8472 | break; | |
8473 | case 'N': case 'T': case 'S': case 'X': case 'W': | |
8474 | { | |
8475 | /* There is a stop reply to handle. */ | |
8476 | rs->waiting_for_stop_reply = 0; | |
29090fb6 | 8477 | |
4f626cad AB |
8478 | stop_reply |
8479 | = (struct stop_reply *) remote_notif_parse (this, | |
8480 | ¬if_client_stop, | |
8481 | rs->buf.data ()); | |
74531fed | 8482 | |
4f626cad AB |
8483 | event_ptid = process_stop_reply (stop_reply, status); |
8484 | break; | |
8485 | } | |
8486 | case 'O': /* Console output. */ | |
8487 | remote_console_output (buf + 1); | |
8488 | break; | |
8489 | case '\0': | |
8490 | if (rs->last_sent_signal != GDB_SIGNAL_0) | |
8491 | { | |
8492 | /* Zero length reply means that we tried 'S' or 'C' and the | |
8493 | remote system doesn't support it. */ | |
8494 | target_terminal::ours_for_output (); | |
6cb06a8c | 8495 | gdb_printf |
4f626cad AB |
8496 | ("Can't send signals to this remote system. %s not sent.\n", |
8497 | gdb_signal_to_name (rs->last_sent_signal)); | |
8498 | rs->last_sent_signal = GDB_SIGNAL_0; | |
8499 | target_terminal::inferior (); | |
8500 | ||
8501 | strcpy (buf, rs->last_sent_step ? "s" : "c"); | |
8502 | putpkt (buf); | |
8503 | break; | |
8504 | } | |
8505 | /* fallthrough */ | |
8506 | default: | |
8507 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 8508 | break; |
43ff13b4 JM |
8509 | } |
8510 | } | |
c8e38a49 | 8511 | |
183be222 | 8512 | if (status->kind () == TARGET_WAITKIND_NO_RESUMED) |
f2faf941 | 8513 | return minus_one_ptid; |
183be222 | 8514 | else if (status->kind () == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
8515 | { |
8516 | /* Nothing interesting happened. If we're doing a non-blocking | |
8517 | poll, we're done. Otherwise, go back to waiting. */ | |
8518 | if (options & TARGET_WNOHANG) | |
8519 | return minus_one_ptid; | |
8520 | else | |
8521 | goto again; | |
8522 | } | |
183be222 SM |
8523 | else if (status->kind () != TARGET_WAITKIND_EXITED |
8524 | && status->kind () != TARGET_WAITKIND_SIGNALLED) | |
82f73884 | 8525 | { |
d7e15655 | 8526 | if (event_ptid != null_ptid) |
47f8a51d | 8527 | record_currthread (rs, event_ptid); |
82f73884 | 8528 | else |
5b6d1e4f | 8529 | event_ptid = first_remote_resumed_thread (this); |
43ff13b4 | 8530 | } |
74531fed | 8531 | else |
e7af6c70 TBA |
8532 | { |
8533 | /* A process exit. Invalidate our notion of current thread. */ | |
8534 | record_currthread (rs, minus_one_ptid); | |
8535 | /* It's possible that the packet did not include a pid. */ | |
8536 | if (event_ptid == null_ptid) | |
5b6d1e4f | 8537 | event_ptid = first_remote_resumed_thread (this); |
e7af6c70 TBA |
8538 | /* EVENT_PTID could still be NULL_PTID. Double-check. */ |
8539 | if (event_ptid == null_ptid) | |
8540 | event_ptid = magic_null_ptid; | |
8541 | } | |
79d7f229 | 8542 | |
82f73884 | 8543 | return event_ptid; |
43ff13b4 JM |
8544 | } |
8545 | ||
74531fed PA |
8546 | /* Wait until the remote machine stops, then return, storing status in |
8547 | STATUS just as `wait' would. */ | |
8548 | ||
f6ac5f3d | 8549 | ptid_t |
b60cea74 TT |
8550 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, |
8551 | target_wait_flags options) | |
c8e38a49 | 8552 | { |
2189c312 SM |
8553 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
8554 | ||
baa8575b SM |
8555 | remote_state *rs = get_remote_state (); |
8556 | ||
8557 | /* Start by clearing the flag that asks for our wait method to be called, | |
8d34471f AB |
8558 | we'll mark it again at the end if needed. If the target is not in |
8559 | async mode then the async token should not be marked. */ | |
baa8575b | 8560 | if (target_is_async_p ()) |
92b98b37 | 8561 | rs->clear_async_event_handler (); |
8d34471f | 8562 | else |
92b98b37 | 8563 | gdb_assert (!rs->async_event_handler_marked ()); |
baa8575b | 8564 | |
c8e38a49 PA |
8565 | ptid_t event_ptid; |
8566 | ||
6efcd9a8 | 8567 | if (target_is_non_stop_p ()) |
6b8edb51 | 8568 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 8569 | else |
6b8edb51 | 8570 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 8571 | |
d9d41e78 | 8572 | if (target_is_async_p ()) |
c8e38a49 | 8573 | { |
baa8575b SM |
8574 | /* If there are events left in the queue, or unacknowledged |
8575 | notifications, then tell the event loop to call us again. */ | |
8576 | if (!rs->stop_reply_queue.empty () | |
8577 | || rs->notif_state->pending_event[notif_client_stop.id] != nullptr) | |
92b98b37 | 8578 | rs->mark_async_event_handler (); |
c8e38a49 | 8579 | } |
c8e38a49 PA |
8580 | |
8581 | return event_ptid; | |
8582 | } | |
8583 | ||
74ca34ce | 8584 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 8585 | |
6b8edb51 PA |
8586 | int |
8587 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
8588 | packet_reg *reg) | |
b96ec7ac | 8589 | { |
ac7936df | 8590 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 8591 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8592 | char *buf, *p; |
9890e433 | 8593 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
8594 | int i; |
8595 | ||
ff52c073 | 8596 | if (m_features.packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
8597 | return 0; |
8598 | ||
8599 | if (reg->pnum == -1) | |
8600 | return 0; | |
8601 | ||
8d64371b | 8602 | p = rs->buf.data (); |
fcad0fa4 | 8603 | *p++ = 'p'; |
74ca34ce | 8604 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 8605 | *p++ = '\0'; |
1f4437a4 | 8606 | putpkt (rs->buf); |
aa7b36b8 | 8607 | getpkt (&rs->buf); |
3f9a994c | 8608 | |
8d64371b | 8609 | buf = rs->buf.data (); |
2e9f7625 | 8610 | |
ff52c073 | 8611 | switch (m_features.packet_ok (rs->buf, PACKET_p)) |
74ca34ce DJ |
8612 | { |
8613 | case PACKET_OK: | |
8614 | break; | |
8615 | case PACKET_UNKNOWN: | |
8616 | return 0; | |
8617 | case PACKET_ERROR: | |
27a9c0bf | 8618 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
7a78108a | 8619 | gdbarch_register_name (regcache->arch (), reg->regnum), |
27a9c0bf | 8620 | buf); |
74ca34ce | 8621 | } |
3f9a994c JB |
8622 | |
8623 | /* If this register is unfetchable, tell the regcache. */ | |
8624 | if (buf[0] == 'x') | |
8480adf2 | 8625 | { |
73e1c03f | 8626 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 8627 | return 1; |
b96ec7ac | 8628 | } |
b96ec7ac | 8629 | |
3f9a994c JB |
8630 | /* Otherwise, parse and supply the value. */ |
8631 | p = buf; | |
8632 | i = 0; | |
8633 | while (p[0] != 0) | |
8634 | { | |
8635 | if (p[1] == 0) | |
74ca34ce | 8636 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
8637 | |
8638 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8639 | p += 2; | |
8640 | } | |
73e1c03f | 8641 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 8642 | return 1; |
b96ec7ac AC |
8643 | } |
8644 | ||
74ca34ce DJ |
8645 | /* Fetch the registers included in the target's 'g' packet. */ |
8646 | ||
6b8edb51 PA |
8647 | int |
8648 | remote_target::send_g_packet () | |
c906108c | 8649 | { |
d01949b6 | 8650 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 8651 | int buf_len; |
c906108c | 8652 | |
8d64371b | 8653 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "g"); |
b75abf5b | 8654 | putpkt (rs->buf); |
aa7b36b8 | 8655 | getpkt (&rs->buf); |
b75abf5b AK |
8656 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
8657 | error (_("Could not read registers; remote failure reply '%s'"), | |
dda83cd7 | 8658 | rs->buf.data ()); |
c906108c | 8659 | |
29709017 DJ |
8660 | /* We can get out of synch in various cases. If the first character |
8661 | in the buffer is not a hex character, assume that has happened | |
8662 | and try to fetch another packet to read. */ | |
8663 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
8664 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
8665 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
8666 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
8667 | { | |
2189c312 | 8668 | remote_debug_printf ("Bad register packet; fetching a new packet"); |
aa7b36b8 | 8669 | getpkt (&rs->buf); |
29709017 DJ |
8670 | } |
8671 | ||
8d64371b | 8672 | buf_len = strlen (rs->buf.data ()); |
74ca34ce DJ |
8673 | |
8674 | /* Sanity check the received packet. */ | |
8675 | if (buf_len % 2 != 0) | |
8d64371b | 8676 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf.data ()); |
29709017 DJ |
8677 | |
8678 | return buf_len / 2; | |
8679 | } | |
8680 | ||
6b8edb51 PA |
8681 | void |
8682 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 8683 | { |
ac7936df | 8684 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 8685 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8686 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
8687 | int i, buf_len; |
8688 | char *p; | |
8689 | char *regs; | |
8690 | ||
8d64371b | 8691 | buf_len = strlen (rs->buf.data ()); |
29709017 DJ |
8692 | |
8693 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 8694 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 | 8695 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8d64371b TT |
8696 | "bytes): %s"), |
8697 | rsa->sizeof_g_packet, buf_len / 2, | |
8698 | rs->buf.data ()); | |
74ca34ce DJ |
8699 | |
8700 | /* Save the size of the packet sent to us by the target. It is used | |
8701 | as a heuristic when determining the max size of packets that the | |
8702 | target can safely receive. */ | |
8703 | if (rsa->actual_register_packet_size == 0) | |
8704 | rsa->actual_register_packet_size = buf_len; | |
8705 | ||
8706 | /* If this is smaller than we guessed the 'g' packet would be, | |
8707 | update our records. A 'g' reply that doesn't include a register's | |
8708 | value implies either that the register is not available, or that | |
8709 | the 'p' packet must be used. */ | |
8710 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8711 | { |
9dc193c3 | 8712 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8713 | |
4a22f64d | 8714 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8715 | { |
9dc193c3 LF |
8716 | long offset = rsa->regs[i].offset; |
8717 | long reg_size = register_size (gdbarch, i); | |
8718 | ||
74ca34ce DJ |
8719 | if (rsa->regs[i].pnum == -1) |
8720 | continue; | |
8721 | ||
9dc193c3 | 8722 | if (offset >= sizeof_g_packet) |
74ca34ce | 8723 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8724 | else if (offset + reg_size > sizeof_g_packet) |
8725 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8726 | else |
74ca34ce | 8727 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8728 | } |
9dc193c3 LF |
8729 | |
8730 | /* Looks valid enough, we can assume this is the correct length | |
dda83cd7 SM |
8731 | for a 'g' packet. It's important not to adjust |
8732 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8733 | this "if" won't be run the next time the method is called | |
8734 | with a packet of the same size and one of the internal errors | |
8735 | below will trigger instead. */ | |
9dc193c3 | 8736 | rsa->sizeof_g_packet = sizeof_g_packet; |
74ca34ce | 8737 | } |
b323314b | 8738 | |
224c3ddb | 8739 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8740 | |
8741 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8742 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8743 | |
c906108c SS |
8744 | /* Reply describes registers byte by byte, each byte encoded as two |
8745 | hex characters. Suck them all up, then supply them to the | |
8746 | register cacheing/storage mechanism. */ | |
8747 | ||
8d64371b | 8748 | p = rs->buf.data (); |
ea9c271d | 8749 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8750 | { |
74ca34ce DJ |
8751 | if (p[0] == 0 || p[1] == 0) |
8752 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
f34652de | 8753 | internal_error (_("unexpected end of 'g' packet reply")); |
74ca34ce | 8754 | |
c906108c | 8755 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8756 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8757 | else |
8758 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8759 | p += 2; | |
8760 | } | |
8761 | ||
a744cf53 MS |
8762 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8763 | { | |
8764 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8765 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8766 | |
8767 | if (r->in_g_packet) | |
8768 | { | |
8d64371b | 8769 | if ((r->offset + reg_size) * 2 > strlen (rs->buf.data ())) |
a744cf53 | 8770 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
f34652de | 8771 | internal_error (_("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8772 | else if (rs->buf[r->offset * 2] == 'x') |
8773 | { | |
8d64371b | 8774 | gdb_assert (r->offset * 2 < strlen (rs->buf.data ())); |
a744cf53 MS |
8775 | /* The register isn't available, mark it as such (at |
8776 | the same time setting the value to zero). */ | |
73e1c03f | 8777 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8778 | } |
8779 | else | |
73e1c03f | 8780 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8781 | } |
8782 | } | |
c906108c SS |
8783 | } |
8784 | ||
6b8edb51 PA |
8785 | void |
8786 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8787 | { |
8788 | send_g_packet (); | |
56be3814 | 8789 | process_g_packet (regcache); |
29709017 DJ |
8790 | } |
8791 | ||
e6e4e701 PA |
8792 | /* Make the remote selected traceframe match GDB's selected |
8793 | traceframe. */ | |
8794 | ||
6b8edb51 PA |
8795 | void |
8796 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8797 | { |
8798 | int newnum; | |
262e1174 | 8799 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8800 | |
262e1174 | 8801 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8802 | return; |
8803 | ||
8804 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8805 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8806 | |
8807 | newnum = target_trace_find (tfind_number, | |
8808 | get_traceframe_number (), 0, 0, NULL); | |
8809 | ||
8810 | /* Should not happen. If it does, all bets are off. */ | |
8811 | if (newnum != get_traceframe_number ()) | |
8812 | warning (_("could not set remote traceframe")); | |
8813 | } | |
8814 | ||
f6ac5f3d PA |
8815 | void |
8816 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8817 | { |
ac7936df | 8818 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8819 | struct remote_state *rs = get_remote_state (); |
8820 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8821 | int i; |
8822 | ||
e6e4e701 | 8823 | set_remote_traceframe (); |
222312d3 | 8824 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8825 | |
8826 | if (regnum >= 0) | |
8827 | { | |
5cd63fda | 8828 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8829 | |
74ca34ce DJ |
8830 | gdb_assert (reg != NULL); |
8831 | ||
8832 | /* If this register might be in the 'g' packet, try that first - | |
8833 | we are likely to read more than one register. If this is the | |
8834 | first 'g' packet, we might be overly optimistic about its | |
8835 | contents, so fall back to 'p'. */ | |
8836 | if (reg->in_g_packet) | |
8837 | { | |
56be3814 | 8838 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8839 | if (reg->in_g_packet) |
8840 | return; | |
8841 | } | |
8842 | ||
56be3814 | 8843 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8844 | return; |
8845 | ||
8846 | /* This register is not available. */ | |
73e1c03f | 8847 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8848 | |
8849 | return; | |
8850 | } | |
8851 | ||
56be3814 | 8852 | fetch_registers_using_g (regcache); |
74ca34ce | 8853 | |
5cd63fda | 8854 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8855 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8856 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8857 | { |
8858 | /* This register is not available. */ | |
73e1c03f | 8859 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8860 | } |
8861 | } | |
8862 | ||
c906108c SS |
8863 | /* Prepare to store registers. Since we may send them all (using a |
8864 | 'G' request), we have to read out the ones we don't want to change | |
8865 | first. */ | |
8866 | ||
f6ac5f3d PA |
8867 | void |
8868 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8869 | { |
9d6eea31 PA |
8870 | struct remote_state *rs = get_remote_state (); |
8871 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8872 | int i; |
cf0e1e0d | 8873 | |
c906108c | 8874 | /* Make sure the entire registers array is valid. */ |
ff52c073 | 8875 | switch (m_features.packet_support (PACKET_P)) |
5a2468f5 JM |
8876 | { |
8877 | case PACKET_DISABLE: | |
8878 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8879 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8880 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8881 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8882 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8883 | break; |
8884 | case PACKET_ENABLE: | |
8885 | break; | |
8886 | } | |
8887 | } | |
8888 | ||
ad10f812 | 8889 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8890 | packet was not recognized. */ |
5a2468f5 | 8891 | |
6b8edb51 PA |
8892 | int |
8893 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8894 | packet_reg *reg) | |
5a2468f5 | 8895 | { |
ac7936df | 8896 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8897 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8898 | /* Try storing a single register. */ |
8d64371b | 8899 | char *buf = rs->buf.data (); |
9890e433 | 8900 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8901 | char *p; |
5a2468f5 | 8902 | |
ff52c073 | 8903 | if (m_features.packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8904 | return 0; |
8905 | ||
8906 | if (reg->pnum == -1) | |
8907 | return 0; | |
8908 | ||
ea9c271d | 8909 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8910 | p = buf + strlen (buf); |
34a79281 | 8911 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8912 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 | 8913 | putpkt (rs->buf); |
aa7b36b8 | 8914 | getpkt (&rs->buf); |
5a2468f5 | 8915 | |
ff52c073 | 8916 | switch (m_features.packet_ok (rs->buf, PACKET_P)) |
74ca34ce DJ |
8917 | { |
8918 | case PACKET_OK: | |
8919 | return 1; | |
8920 | case PACKET_ERROR: | |
27a9c0bf | 8921 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8d64371b | 8922 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf.data ()); |
74ca34ce DJ |
8923 | case PACKET_UNKNOWN: |
8924 | return 0; | |
8925 | default: | |
f34652de | 8926 | internal_error (_("Bad result from packet_ok")); |
74ca34ce | 8927 | } |
c906108c SS |
8928 | } |
8929 | ||
23860348 MS |
8930 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8931 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8932 | |
6b8edb51 PA |
8933 | void |
8934 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8935 | { |
d01949b6 | 8936 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8937 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8938 | gdb_byte *regs; |
c906108c SS |
8939 | char *p; |
8940 | ||
193cb69f AC |
8941 | /* Extract all the registers in the regcache copying them into a |
8942 | local buffer. */ | |
8943 | { | |
b323314b | 8944 | int i; |
a744cf53 | 8945 | |
224c3ddb | 8946 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8947 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8948 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8949 | { |
ea9c271d | 8950 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8951 | |
b323314b | 8952 | if (r->in_g_packet) |
34a79281 | 8953 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8954 | } |
8955 | } | |
c906108c SS |
8956 | |
8957 | /* Command describes registers byte by byte, | |
8958 | each byte encoded as two hex characters. */ | |
8d64371b | 8959 | p = rs->buf.data (); |
193cb69f | 8960 | *p++ = 'G'; |
74ca34ce | 8961 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 | 8962 | putpkt (rs->buf); |
aa7b36b8 | 8963 | getpkt (&rs->buf); |
1f4437a4 | 8964 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
7a78108a | 8965 | error (_("Could not write registers; remote failure reply '%s'"), |
8d64371b | 8966 | rs->buf.data ()); |
c906108c | 8967 | } |
74ca34ce DJ |
8968 | |
8969 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8970 | of the register cache buffer. FIXME: ignores errors. */ | |
8971 | ||
f6ac5f3d PA |
8972 | void |
8973 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8974 | { |
5cd63fda | 8975 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8976 | struct remote_state *rs = get_remote_state (); |
8977 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8978 | int i; |
8979 | ||
e6e4e701 | 8980 | set_remote_traceframe (); |
222312d3 | 8981 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8982 | |
8983 | if (regnum >= 0) | |
8984 | { | |
5cd63fda | 8985 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8986 | |
74ca34ce DJ |
8987 | gdb_assert (reg != NULL); |
8988 | ||
8989 | /* Always prefer to store registers using the 'P' packet if | |
8990 | possible; we often change only a small number of registers. | |
8991 | Sometimes we change a larger number; we'd need help from a | |
8992 | higher layer to know to use 'G'. */ | |
56be3814 | 8993 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8994 | return; |
8995 | ||
8996 | /* For now, don't complain if we have no way to write the | |
8997 | register. GDB loses track of unavailable registers too | |
8998 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8999 | any way to read the register, either... */ |
74ca34ce DJ |
9000 | if (!reg->in_g_packet) |
9001 | return; | |
9002 | ||
56be3814 | 9003 | store_registers_using_G (regcache); |
74ca34ce DJ |
9004 | return; |
9005 | } | |
9006 | ||
56be3814 | 9007 | store_registers_using_G (regcache); |
74ca34ce | 9008 | |
5cd63fda | 9009 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 9010 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 9011 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
9012 | /* See above for why we do not issue an error here. */ |
9013 | continue; | |
9014 | } | |
c906108c SS |
9015 | \f |
9016 | ||
9017 | /* Return the number of hex digits in num. */ | |
9018 | ||
9019 | static int | |
fba45db2 | 9020 | hexnumlen (ULONGEST num) |
c906108c SS |
9021 | { |
9022 | int i; | |
9023 | ||
9024 | for (i = 0; num != 0; i++) | |
9025 | num >>= 4; | |
9026 | ||
325fac50 | 9027 | return std::max (i, 1); |
c906108c SS |
9028 | } |
9029 | ||
2df3850c | 9030 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
9031 | |
9032 | static int | |
fba45db2 | 9033 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 9034 | { |
c906108c | 9035 | int len = hexnumlen (num); |
a744cf53 | 9036 | |
2df3850c JM |
9037 | return hexnumnstr (buf, num, len); |
9038 | } | |
9039 | ||
c906108c | 9040 | |
2df3850c | 9041 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 9042 | |
2df3850c | 9043 | static int |
fba45db2 | 9044 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
9045 | { |
9046 | int i; | |
9047 | ||
9048 | buf[width] = '\0'; | |
9049 | ||
9050 | for (i = width - 1; i >= 0; i--) | |
c906108c | 9051 | { |
c5aa993b | 9052 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
9053 | num >>= 4; |
9054 | } | |
9055 | ||
2df3850c | 9056 | return width; |
c906108c SS |
9057 | } |
9058 | ||
23860348 | 9059 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
9060 | |
9061 | static CORE_ADDR | |
fba45db2 | 9062 | remote_address_masked (CORE_ADDR addr) |
c906108c | 9063 | { |
883b9c6c | 9064 | unsigned int address_size = remote_address_size; |
a744cf53 | 9065 | |
911c95a5 UW |
9066 | /* If "remoteaddresssize" was not set, default to target address size. */ |
9067 | if (!address_size) | |
99d9c3b9 | 9068 | address_size = gdbarch_addr_bit (current_inferior ()->arch ()); |
911c95a5 UW |
9069 | |
9070 | if (address_size > 0 | |
9071 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
9072 | { |
9073 | /* Only create a mask when that mask can safely be constructed | |
dda83cd7 | 9074 | in a ULONGEST variable. */ |
c906108c | 9075 | ULONGEST mask = 1; |
a744cf53 | 9076 | |
911c95a5 | 9077 | mask = (mask << address_size) - 1; |
c906108c SS |
9078 | addr &= mask; |
9079 | } | |
9080 | return addr; | |
9081 | } | |
9082 | ||
9083 | /* Determine whether the remote target supports binary downloading. | |
9084 | This is accomplished by sending a no-op memory write of zero length | |
9085 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
9086 | the whole packet, since many stubs strip the eighth bit and |
9087 | subsequently compute a wrong checksum, which causes real havoc with | |
9088 | remote_write_bytes. | |
7a292a7a | 9089 | |
96baa820 | 9090 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 9091 | clean. In cases like this, the user should clear "remote |
23860348 | 9092 | X-packet". */ |
96baa820 | 9093 | |
6b8edb51 PA |
9094 | void |
9095 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 9096 | { |
d01949b6 | 9097 | struct remote_state *rs = get_remote_state (); |
24b06219 | 9098 | |
ff52c073 | 9099 | switch (m_features.packet_support (PACKET_X)) |
c906108c | 9100 | { |
96baa820 JM |
9101 | case PACKET_DISABLE: |
9102 | break; | |
9103 | case PACKET_ENABLE: | |
9104 | break; | |
9105 | case PACKET_SUPPORT_UNKNOWN: | |
9106 | { | |
96baa820 | 9107 | char *p; |
802188a7 | 9108 | |
8d64371b | 9109 | p = rs->buf.data (); |
96baa820 JM |
9110 | *p++ = 'X'; |
9111 | p += hexnumstr (p, (ULONGEST) addr); | |
9112 | *p++ = ','; | |
9113 | p += hexnumstr (p, (ULONGEST) 0); | |
9114 | *p++ = ':'; | |
9115 | *p = '\0'; | |
802188a7 | 9116 | |
8d64371b | 9117 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
aa7b36b8 | 9118 | getpkt (&rs->buf); |
c906108c | 9119 | |
2e9f7625 | 9120 | if (rs->buf[0] == '\0') |
96baa820 | 9121 | { |
2189c312 | 9122 | remote_debug_printf ("binary downloading NOT supported by target"); |
ff52c073 | 9123 | m_features.m_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
9124 | } |
9125 | else | |
9126 | { | |
2189c312 | 9127 | remote_debug_printf ("binary downloading supported by target"); |
ff52c073 | 9128 | m_features.m_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
9129 | } |
9130 | break; | |
9131 | } | |
c906108c SS |
9132 | } |
9133 | } | |
9134 | ||
124e13d9 SM |
9135 | /* Helper function to resize the payload in order to try to get a good |
9136 | alignment. We try to write an amount of data such that the next write will | |
9137 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
9138 | ||
9139 | static int | |
9140 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
9141 | { | |
9142 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
9143 | } | |
9144 | ||
c906108c SS |
9145 | /* Write memory data directly to the remote machine. |
9146 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 9147 | HEADER is the starting part of the packet. |
c906108c SS |
9148 | MEMADDR is the address in the remote memory space. |
9149 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
9150 | LEN_UNITS is the number of addressable units to write. |
9151 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
9152 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
9153 | should send data as binary ('X'), or hex-encoded ('M'). | |
9154 | ||
9155 | The function creates packet of the form | |
9156 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
9157 | ||
124e13d9 | 9158 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
9159 | |
9160 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
9161 | are omitted. | |
9162 | ||
9b409511 | 9163 | Return the transferred status, error or OK (an |
124e13d9 SM |
9164 | 'enum target_xfer_status' value). Save the number of addressable units |
9165 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
9166 | ||
9167 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
9168 | exchange between gdb and the stub could look like (?? in place of the | |
9169 | checksum): | |
9170 | ||
9171 | -> $m1000,4#?? | |
9172 | <- aaaabbbbccccdddd | |
9173 | ||
9174 | -> $M1000,3:eeeeffffeeee#?? | |
9175 | <- OK | |
9176 | ||
9177 | -> $m1000,4#?? | |
9178 | <- eeeeffffeeeedddd */ | |
c906108c | 9179 | |
6b8edb51 PA |
9180 | target_xfer_status |
9181 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
9182 | const gdb_byte *myaddr, | |
9183 | ULONGEST len_units, | |
9184 | int unit_size, | |
9185 | ULONGEST *xfered_len_units, | |
9186 | char packet_format, int use_length) | |
c906108c | 9187 | { |
6d820c5c | 9188 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 9189 | char *p; |
a76d924d DJ |
9190 | char *plen = NULL; |
9191 | int plenlen = 0; | |
124e13d9 SM |
9192 | int todo_units; |
9193 | int units_written; | |
9194 | int payload_capacity_bytes; | |
9195 | int payload_length_bytes; | |
a76d924d DJ |
9196 | |
9197 | if (packet_format != 'X' && packet_format != 'M') | |
f34652de | 9198 | internal_error (_("remote_write_bytes_aux: bad packet format")); |
c906108c | 9199 | |
124e13d9 | 9200 | if (len_units == 0) |
9b409511 | 9201 | return TARGET_XFER_EOF; |
b2182ed2 | 9202 | |
124e13d9 | 9203 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 9204 | |
6d820c5c DJ |
9205 | /* The packet buffer will be large enough for the payload; |
9206 | get_memory_packet_size ensures this. */ | |
a76d924d | 9207 | rs->buf[0] = '\0'; |
c906108c | 9208 | |
a257b5bb | 9209 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
9210 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
9211 | ||
124e13d9 | 9212 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 9213 | if (!use_length) |
0df8b418 | 9214 | /* The comma won't be used. */ |
124e13d9 SM |
9215 | payload_capacity_bytes += 1; |
9216 | payload_capacity_bytes -= strlen (header); | |
9217 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 9218 | |
a76d924d | 9219 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 9220 | |
8d64371b TT |
9221 | strcat (rs->buf.data (), header); |
9222 | p = rs->buf.data () + strlen (header); | |
a76d924d DJ |
9223 | |
9224 | /* Compute a best guess of the number of bytes actually transfered. */ | |
9225 | if (packet_format == 'X') | |
c906108c | 9226 | { |
23860348 | 9227 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
9228 | todo_units = std::min (len_units, |
9229 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 9230 | if (use_length) |
124e13d9 | 9231 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 9232 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
9233 | } |
9234 | else | |
9235 | { | |
124e13d9 | 9236 | /* Number of bytes that will fit. */ |
325fac50 PA |
9237 | todo_units |
9238 | = std::min (len_units, | |
9239 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 9240 | if (use_length) |
124e13d9 | 9241 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
9242 | todo_units = std::min (todo_units, |
9243 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 9244 | } |
a76d924d | 9245 | |
124e13d9 | 9246 | if (todo_units <= 0) |
f34652de | 9247 | internal_error (_("minimum packet size too small to write data")); |
802188a7 | 9248 | |
6765f3e5 DJ |
9249 | /* If we already need another packet, then try to align the end |
9250 | of this packet to a useful boundary. */ | |
124e13d9 SM |
9251 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
9252 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 9253 | |
a257b5bb | 9254 | /* Append "<memaddr>". */ |
917317f4 JM |
9255 | memaddr = remote_address_masked (memaddr); |
9256 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 9257 | |
a76d924d DJ |
9258 | if (use_length) |
9259 | { | |
9260 | /* Append ",". */ | |
9261 | *p++ = ','; | |
802188a7 | 9262 | |
124e13d9 | 9263 | /* Append the length and retain its location and size. It may need to be |
dda83cd7 | 9264 | adjusted once the packet body has been created. */ |
a76d924d | 9265 | plen = p; |
124e13d9 | 9266 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
9267 | p += plenlen; |
9268 | } | |
a257b5bb AC |
9269 | |
9270 | /* Append ":". */ | |
917317f4 JM |
9271 | *p++ = ':'; |
9272 | *p = '\0'; | |
802188a7 | 9273 | |
a257b5bb | 9274 | /* Append the packet body. */ |
a76d924d | 9275 | if (packet_format == 'X') |
917317f4 | 9276 | { |
917317f4 JM |
9277 | /* Binary mode. Send target system values byte by byte, in |
9278 | increasing byte addresses. Only escape certain critical | |
9279 | characters. */ | |
124e13d9 SM |
9280 | payload_length_bytes = |
9281 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
9282 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 9283 | |
124e13d9 | 9284 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
9285 | a second try to keep the end of the packet aligned. Don't do |
9286 | this if the packet is tiny. */ | |
124e13d9 | 9287 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 9288 | { |
124e13d9 SM |
9289 | int new_todo_units; |
9290 | ||
9291 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
9292 | ||
9293 | if (new_todo_units != units_written) | |
9294 | payload_length_bytes = | |
9295 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
9296 | (gdb_byte *) p, &units_written, | |
9297 | payload_capacity_bytes); | |
6765f3e5 DJ |
9298 | } |
9299 | ||
124e13d9 SM |
9300 | p += payload_length_bytes; |
9301 | if (use_length && units_written < todo_units) | |
c906108c | 9302 | { |
802188a7 | 9303 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 9304 | and we have actually sent fewer units than planned. |
917317f4 JM |
9305 | Fix-up the length field of the packet. Use the same |
9306 | number of characters as before. */ | |
124e13d9 SM |
9307 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
9308 | plenlen); | |
917317f4 | 9309 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 9310 | } |
a76d924d DJ |
9311 | } |
9312 | else | |
9313 | { | |
917317f4 JM |
9314 | /* Normal mode: Send target system values byte by byte, in |
9315 | increasing byte addresses. Each byte is encoded as a two hex | |
9316 | value. */ | |
124e13d9 SM |
9317 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
9318 | units_written = todo_units; | |
c906108c | 9319 | } |
802188a7 | 9320 | |
8d64371b | 9321 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
aa7b36b8 | 9322 | getpkt (&rs->buf); |
802188a7 | 9323 | |
2e9f7625 | 9324 | if (rs->buf[0] == 'E') |
00d84524 | 9325 | return TARGET_XFER_E_IO; |
802188a7 | 9326 | |
124e13d9 SM |
9327 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
9328 | send fewer units than we'd planned. */ | |
9329 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 9330 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
9331 | } |
9332 | ||
a76d924d DJ |
9333 | /* Write memory data directly to the remote machine. |
9334 | This does not inform the data cache; the data cache uses this. | |
9335 | MEMADDR is the address in the remote memory space. | |
9336 | MYADDR is the address of the buffer in our space. | |
9337 | LEN is the number of bytes. | |
9338 | ||
9b409511 YQ |
9339 | Return the transferred status, error or OK (an |
9340 | 'enum target_xfer_status' value). Save the number of bytes | |
9341 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 9342 | |
6b8edb51 PA |
9343 | target_xfer_status |
9344 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
9345 | ULONGEST len, int unit_size, | |
9346 | ULONGEST *xfered_len) | |
a76d924d | 9347 | { |
a121b7c1 | 9348 | const char *packet_format = NULL; |
a76d924d DJ |
9349 | |
9350 | /* Check whether the target supports binary download. */ | |
9351 | check_binary_download (memaddr); | |
9352 | ||
ff52c073 | 9353 | switch (m_features.packet_support (PACKET_X)) |
a76d924d DJ |
9354 | { |
9355 | case PACKET_ENABLE: | |
9356 | packet_format = "X"; | |
9357 | break; | |
9358 | case PACKET_DISABLE: | |
9359 | packet_format = "M"; | |
9360 | break; | |
9361 | case PACKET_SUPPORT_UNKNOWN: | |
f34652de | 9362 | internal_error (_("remote_write_bytes: bad internal state")); |
a76d924d | 9363 | default: |
f34652de | 9364 | internal_error (_("bad switch")); |
a76d924d DJ |
9365 | } |
9366 | ||
9367 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 9368 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 9369 | packet_format[0], 1); |
a76d924d DJ |
9370 | } |
9371 | ||
9217e74e YQ |
9372 | /* Read memory data directly from the remote machine. |
9373 | This does not use the data cache; the data cache uses this. | |
9374 | MEMADDR is the address in the remote memory space. | |
9375 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
9376 | LEN_UNITS is the number of addressable memory units to read.. |
9377 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
9378 | |
9379 | Return the transferred status, error or OK (an | |
9380 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
9381 | transferred in *XFERED_LEN_UNITS. |
9382 | ||
9383 | See the comment of remote_write_bytes_aux for an example of | |
9384 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 9385 | |
6b8edb51 PA |
9386 | target_xfer_status |
9387 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
9388 | ULONGEST len_units, | |
9389 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
9390 | { |
9391 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 9392 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 9393 | char *p; |
124e13d9 SM |
9394 | int todo_units; |
9395 | int decoded_bytes; | |
9217e74e | 9396 | |
124e13d9 | 9397 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
9398 | /* The packet buffer will be large enough for the payload; |
9399 | get_memory_packet_size ensures this. */ | |
9400 | ||
124e13d9 | 9401 | /* Number of units that will fit. */ |
325fac50 PA |
9402 | todo_units = std::min (len_units, |
9403 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
9404 | |
9405 | /* Construct "m"<memaddr>","<len>". */ | |
9406 | memaddr = remote_address_masked (memaddr); | |
8d64371b | 9407 | p = rs->buf.data (); |
9217e74e YQ |
9408 | *p++ = 'm'; |
9409 | p += hexnumstr (p, (ULONGEST) memaddr); | |
9410 | *p++ = ','; | |
124e13d9 | 9411 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
9412 | *p = '\0'; |
9413 | putpkt (rs->buf); | |
aa7b36b8 | 9414 | getpkt (&rs->buf); |
9217e74e YQ |
9415 | if (rs->buf[0] == 'E' |
9416 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
9417 | && rs->buf[3] == '\0') | |
9418 | return TARGET_XFER_E_IO; | |
9419 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
9420 | characters. */ | |
8d64371b | 9421 | p = rs->buf.data (); |
124e13d9 | 9422 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 9423 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 9424 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 9425 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
9426 | } |
9427 | ||
b55fbac4 YQ |
9428 | /* Using the set of read-only target sections of remote, read live |
9429 | read-only memory. | |
8acf9577 YQ |
9430 | |
9431 | For interface/parameters/return description see target.h, | |
9432 | to_xfer_partial. */ | |
9433 | ||
6b8edb51 PA |
9434 | target_xfer_status |
9435 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
9436 | ULONGEST memaddr, | |
9437 | ULONGEST len, | |
9438 | int unit_size, | |
9439 | ULONGEST *xfered_len) | |
8acf9577 | 9440 | { |
19cf757a | 9441 | const struct target_section *secp; |
8acf9577 | 9442 | |
6b8edb51 | 9443 | secp = target_section_by_addr (this, memaddr); |
8acf9577 | 9444 | if (secp != NULL |
fd361982 | 9445 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
8acf9577 | 9446 | { |
8acf9577 YQ |
9447 | ULONGEST memend = memaddr + len; |
9448 | ||
25b5a04e SM |
9449 | const std::vector<target_section> *table |
9450 | = target_get_section_table (this); | |
19cf757a | 9451 | for (const target_section &p : *table) |
8acf9577 | 9452 | { |
bb2a6777 | 9453 | if (memaddr >= p.addr) |
8acf9577 | 9454 | { |
bb2a6777 | 9455 | if (memend <= p.endaddr) |
8acf9577 YQ |
9456 | { |
9457 | /* Entire transfer is within this section. */ | |
124e13d9 | 9458 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9459 | xfered_len); |
8acf9577 | 9460 | } |
bb2a6777 | 9461 | else if (memaddr >= p.endaddr) |
8acf9577 YQ |
9462 | { |
9463 | /* This section ends before the transfer starts. */ | |
9464 | continue; | |
9465 | } | |
9466 | else | |
9467 | { | |
9468 | /* This section overlaps the transfer. Just do half. */ | |
bb2a6777 | 9469 | len = p.endaddr - memaddr; |
124e13d9 | 9470 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9471 | xfered_len); |
8acf9577 YQ |
9472 | } |
9473 | } | |
9474 | } | |
9475 | } | |
9476 | ||
9477 | return TARGET_XFER_EOF; | |
9478 | } | |
9479 | ||
9217e74e YQ |
9480 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
9481 | first if the requested memory is unavailable in traceframe. | |
9482 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 9483 | |
6b8edb51 PA |
9484 | target_xfer_status |
9485 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
9486 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
9487 | ULONGEST *xfered_len) | |
c906108c | 9488 | { |
6b6aa828 | 9489 | if (len == 0) |
96c4f946 | 9490 | return TARGET_XFER_EOF; |
b2182ed2 | 9491 | |
8acf9577 YQ |
9492 | if (get_traceframe_number () != -1) |
9493 | { | |
a79b1bc6 | 9494 | std::vector<mem_range> available; |
8acf9577 YQ |
9495 | |
9496 | /* If we fail to get the set of available memory, then the | |
9497 | target does not support querying traceframe info, and so we | |
9498 | attempt reading from the traceframe anyway (assuming the | |
9499 | target implements the old QTro packet then). */ | |
9500 | if (traceframe_available_memory (&available, memaddr, len)) | |
9501 | { | |
a79b1bc6 | 9502 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
9503 | { |
9504 | enum target_xfer_status res; | |
9505 | ||
9506 | /* Don't read into the traceframe's available | |
9507 | memory. */ | |
a79b1bc6 | 9508 | if (!available.empty ()) |
8acf9577 YQ |
9509 | { |
9510 | LONGEST oldlen = len; | |
9511 | ||
a79b1bc6 | 9512 | len = available[0].start - memaddr; |
8acf9577 YQ |
9513 | gdb_assert (len <= oldlen); |
9514 | } | |
9515 | ||
8acf9577 | 9516 | /* This goes through the topmost target again. */ |
6b8edb51 | 9517 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 9518 | len, unit_size, xfered_len); |
8acf9577 YQ |
9519 | if (res == TARGET_XFER_OK) |
9520 | return TARGET_XFER_OK; | |
9521 | else | |
9522 | { | |
9523 | /* No use trying further, we know some memory starting | |
9524 | at MEMADDR isn't available. */ | |
9525 | *xfered_len = len; | |
92ffd475 PC |
9526 | return (*xfered_len != 0) ? |
9527 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
9528 | } |
9529 | } | |
9530 | ||
9531 | /* Don't try to read more than how much is available, in | |
9532 | case the target implements the deprecated QTro packet to | |
9533 | cater for older GDBs (the target's knowledge of read-only | |
9534 | sections may be outdated by now). */ | |
a79b1bc6 | 9535 | len = available[0].length; |
8acf9577 YQ |
9536 | } |
9537 | } | |
9538 | ||
124e13d9 | 9539 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 9540 | } |
74531fed | 9541 | |
c906108c | 9542 | \f |
c906108c | 9543 | |
a76d924d DJ |
9544 | /* Sends a packet with content determined by the printf format string |
9545 | FORMAT and the remaining arguments, then gets the reply. Returns | |
9546 | whether the packet was a success, a failure, or unknown. */ | |
9547 | ||
6b8edb51 PA |
9548 | packet_result |
9549 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
9550 | { |
9551 | struct remote_state *rs = get_remote_state (); | |
9552 | int max_size = get_remote_packet_size (); | |
a76d924d | 9553 | va_list ap; |
a744cf53 | 9554 | |
a76d924d DJ |
9555 | va_start (ap, format); |
9556 | ||
9557 | rs->buf[0] = '\0'; | |
8d64371b | 9558 | int size = vsnprintf (rs->buf.data (), max_size, format, ap); |
33b031ce GB |
9559 | |
9560 | va_end (ap); | |
9561 | ||
9562 | if (size >= max_size) | |
f34652de | 9563 | internal_error (_("Too long remote packet.")); |
a76d924d DJ |
9564 | |
9565 | if (putpkt (rs->buf) < 0) | |
9566 | error (_("Communication problem with target.")); | |
9567 | ||
9568 | rs->buf[0] = '\0'; | |
aa7b36b8 | 9569 | getpkt (&rs->buf); |
a76d924d DJ |
9570 | |
9571 | return packet_check_result (rs->buf); | |
9572 | } | |
9573 | ||
a76d924d DJ |
9574 | /* Flash writing can take quite some time. We'll set |
9575 | effectively infinite timeout for flash operations. | |
9576 | In future, we'll need to decide on a better approach. */ | |
9577 | static const int remote_flash_timeout = 1000; | |
9578 | ||
f6ac5f3d PA |
9579 | void |
9580 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 9581 | { |
99d9c3b9 | 9582 | int addr_size = gdbarch_addr_bit (current_inferior ()->arch ()) / 8; |
a76d924d | 9583 | enum packet_result ret; |
2ec845e7 TT |
9584 | scoped_restore restore_timeout |
9585 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
9586 | |
9587 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 9588 | phex (address, addr_size), |
a76d924d DJ |
9589 | phex (length, 4)); |
9590 | switch (ret) | |
9591 | { | |
9592 | case PACKET_UNKNOWN: | |
9593 | error (_("Remote target does not support flash erase")); | |
9594 | case PACKET_ERROR: | |
9595 | error (_("Error erasing flash with vFlashErase packet")); | |
9596 | default: | |
9597 | break; | |
9598 | } | |
a76d924d DJ |
9599 | } |
9600 | ||
6b8edb51 PA |
9601 | target_xfer_status |
9602 | remote_target::remote_flash_write (ULONGEST address, | |
9603 | ULONGEST length, ULONGEST *xfered_len, | |
9604 | const gdb_byte *data) | |
a76d924d | 9605 | { |
2ec845e7 TT |
9606 | scoped_restore restore_timeout |
9607 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9608 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
9609 | xfered_len,'X', 0); | |
a76d924d DJ |
9610 | } |
9611 | ||
f6ac5f3d PA |
9612 | void |
9613 | remote_target::flash_done () | |
a76d924d | 9614 | { |
a76d924d | 9615 | int ret; |
a76d924d | 9616 | |
2ec845e7 TT |
9617 | scoped_restore restore_timeout |
9618 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9619 | ||
a76d924d | 9620 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
9621 | |
9622 | switch (ret) | |
9623 | { | |
9624 | case PACKET_UNKNOWN: | |
9625 | error (_("Remote target does not support vFlashDone")); | |
9626 | case PACKET_ERROR: | |
9627 | error (_("Error finishing flash operation")); | |
9628 | default: | |
9629 | break; | |
9630 | } | |
9631 | } | |
9632 | ||
c906108c SS |
9633 | \f |
9634 | /* Stuff for dealing with the packets which are part of this protocol. | |
9635 | See comment at top of file for details. */ | |
9636 | ||
1927e618 PA |
9637 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
9638 | error to higher layers. Called when a serial error is detected. | |
9639 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
9640 | the system error message for errno at function entry and final dot |
9641 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
9642 | |
9643 | static void | |
5b6d1e4f | 9644 | unpush_and_perror (remote_target *target, const char *string) |
1927e618 | 9645 | { |
d6cb50a2 | 9646 | int saved_errno = errno; |
1927e618 | 9647 | |
5b6d1e4f | 9648 | remote_unpush_target (target); |
d6cb50a2 JK |
9649 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
9650 | safe_strerror (saved_errno)); | |
1927e618 PA |
9651 | } |
9652 | ||
048094ac PA |
9653 | /* Read a single character from the remote end. The current quit |
9654 | handler is overridden to avoid quitting in the middle of packet | |
9655 | sequence, as that would break communication with the remote server. | |
9656 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 9657 | |
6b8edb51 PA |
9658 | int |
9659 | remote_target::readchar (int timeout) | |
c906108c SS |
9660 | { |
9661 | int ch; | |
5d93a237 | 9662 | struct remote_state *rs = get_remote_state (); |
048094ac | 9663 | |
2ec845e7 | 9664 | { |
6b8edb51 PA |
9665 | scoped_restore restore_quit_target |
9666 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9667 | scoped_restore restore_quit |
6b8edb51 | 9668 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 9669 | |
2ec845e7 | 9670 | rs->got_ctrlc_during_io = 0; |
c906108c | 9671 | |
2ec845e7 | 9672 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 9673 | |
2ec845e7 TT |
9674 | if (rs->got_ctrlc_during_io) |
9675 | set_quit_flag (); | |
9676 | } | |
048094ac | 9677 | |
2acceee2 | 9678 | if (ch >= 0) |
0876f84a | 9679 | return ch; |
2acceee2 JM |
9680 | |
9681 | switch ((enum serial_rc) ch) | |
c906108c SS |
9682 | { |
9683 | case SERIAL_EOF: | |
5b6d1e4f | 9684 | remote_unpush_target (this); |
598d3636 | 9685 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 9686 | /* no return */ |
c906108c | 9687 | case SERIAL_ERROR: |
5b6d1e4f | 9688 | unpush_and_perror (this, _("Remote communication error. " |
c8f6fc92 | 9689 | "Target disconnected")); |
2acceee2 | 9690 | /* no return */ |
c906108c | 9691 | case SERIAL_TIMEOUT: |
2acceee2 | 9692 | break; |
c906108c | 9693 | } |
2acceee2 | 9694 | return ch; |
c906108c SS |
9695 | } |
9696 | ||
c33e31fd | 9697 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9698 | writing fails. The current quit handler is overridden to avoid |
9699 | quitting in the middle of packet sequence, as that would break | |
9700 | communication with the remote server. See | |
9701 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9702 | |
6b8edb51 PA |
9703 | void |
9704 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9705 | { |
5d93a237 | 9706 | struct remote_state *rs = get_remote_state (); |
048094ac | 9707 | |
6b8edb51 PA |
9708 | scoped_restore restore_quit_target |
9709 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9710 | scoped_restore restore_quit |
6b8edb51 | 9711 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9712 | |
9713 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9714 | |
9715 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9716 | { |
5b6d1e4f | 9717 | unpush_and_perror (this, _("Remote communication error. " |
c8f6fc92 | 9718 | "Target disconnected")); |
c33e31fd | 9719 | } |
048094ac PA |
9720 | |
9721 | if (rs->got_ctrlc_during_io) | |
9722 | set_quit_flag (); | |
c33e31fd PA |
9723 | } |
9724 | ||
b3ced9ba PA |
9725 | /* Return a string representing an escaped version of BUF, of len N. |
9726 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9727 | |
b3ced9ba | 9728 | static std::string |
6e5abd65 PA |
9729 | escape_buffer (const char *buf, int n) |
9730 | { | |
d7e74731 | 9731 | string_file stb; |
6e5abd65 | 9732 | |
d7e74731 | 9733 | stb.putstrn (buf, n, '\\'); |
5d10a204 | 9734 | return stb.release (); |
6e5abd65 PA |
9735 | } |
9736 | ||
c906108c | 9737 | int |
6b8edb51 | 9738 | remote_target::putpkt (const char *buf) |
c906108c SS |
9739 | { |
9740 | return putpkt_binary (buf, strlen (buf)); | |
9741 | } | |
9742 | ||
6b8edb51 PA |
9743 | /* Wrapper around remote_target::putpkt to avoid exporting |
9744 | remote_target. */ | |
9745 | ||
9746 | int | |
9747 | putpkt (remote_target *remote, const char *buf) | |
9748 | { | |
9749 | return remote->putpkt (buf); | |
9750 | } | |
9751 | ||
c906108c | 9752 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9753 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9754 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9755 | and for a possible /0 if we are debugging (remote_debug) and want |
9756 | to print the sent packet as a string. */ | |
c906108c | 9757 | |
6b8edb51 PA |
9758 | int |
9759 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9760 | { |
2d717e4f | 9761 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9762 | int i; |
9763 | unsigned char csum = 0; | |
b80406ac TT |
9764 | gdb::def_vector<char> data (cnt + 6); |
9765 | char *buf2 = data.data (); | |
085dd6e6 | 9766 | |
c906108c SS |
9767 | int ch; |
9768 | int tcount = 0; | |
9769 | char *p; | |
9770 | ||
e24a49d8 PA |
9771 | /* Catch cases like trying to read memory or listing threads while |
9772 | we're waiting for a stop reply. The remote server wouldn't be | |
9773 | ready to handle this request, so we'd hang and timeout. We don't | |
9774 | have to worry about this in synchronous mode, because in that | |
9775 | case it's not possible to issue a command while the target is | |
74531fed PA |
9776 | running. This is not a problem in non-stop mode, because in that |
9777 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9778 | if (!target_is_non_stop_p () |
9779 | && target_is_async_p () | |
9780 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9781 | { |
9782 | error (_("Cannot execute this command while the target is running.\n" | |
9783 | "Use the \"interrupt\" command to stop the target\n" | |
9784 | "and then try again.")); | |
9785 | } | |
e24a49d8 | 9786 | |
c906108c SS |
9787 | /* Copy the packet into buffer BUF2, encapsulating it |
9788 | and giving it a checksum. */ | |
9789 | ||
c906108c SS |
9790 | p = buf2; |
9791 | *p++ = '$'; | |
9792 | ||
9793 | for (i = 0; i < cnt; i++) | |
9794 | { | |
9795 | csum += buf[i]; | |
9796 | *p++ = buf[i]; | |
9797 | } | |
9798 | *p++ = '#'; | |
9799 | *p++ = tohex ((csum >> 4) & 0xf); | |
9800 | *p++ = tohex (csum & 0xf); | |
9801 | ||
9802 | /* Send it over and over until we get a positive ack. */ | |
9803 | ||
9804 | while (1) | |
9805 | { | |
c906108c SS |
9806 | if (remote_debug) |
9807 | { | |
9808 | *p = '\0'; | |
b3ced9ba | 9809 | |
6f8976bf | 9810 | int len = (int) (p - buf2); |
6cc8564b LM |
9811 | int max_chars; |
9812 | ||
9813 | if (remote_packet_max_chars < 0) | |
9814 | max_chars = len; | |
9815 | else | |
9816 | max_chars = remote_packet_max_chars; | |
6f8976bf YQ |
9817 | |
9818 | std::string str | |
6cc8564b | 9819 | = escape_buffer (buf2, std::min (len, max_chars)); |
6f8976bf | 9820 | |
6cc8564b | 9821 | if (len > max_chars) |
2189c312 SM |
9822 | remote_debug_printf_nofunc |
9823 | ("Sending packet: %s [%d bytes omitted]", str.c_str (), | |
9824 | len - max_chars); | |
9825 | else | |
9826 | remote_debug_printf_nofunc ("Sending packet: %s", str.c_str ()); | |
c906108c | 9827 | } |
c33e31fd | 9828 | remote_serial_write (buf2, p - buf2); |
c906108c | 9829 | |
a6f3e723 SL |
9830 | /* If this is a no acks version of the remote protocol, send the |
9831 | packet and move on. */ | |
9832 | if (rs->noack_mode) | |
dda83cd7 | 9833 | break; |
a6f3e723 | 9834 | |
74531fed PA |
9835 | /* Read until either a timeout occurs (-2) or '+' is read. |
9836 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9837 | while (1) |
9838 | { | |
9839 | ch = readchar (remote_timeout); | |
9840 | ||
c906108c SS |
9841 | switch (ch) |
9842 | { | |
9843 | case '+': | |
2189c312 | 9844 | remote_debug_printf_nofunc ("Received Ack"); |
c906108c | 9845 | return 1; |
1216fa2c | 9846 | case '-': |
2189c312 | 9847 | remote_debug_printf_nofunc ("Received Nak"); |
a17d146e | 9848 | /* FALLTHROUGH */ |
c906108c | 9849 | case SERIAL_TIMEOUT: |
c5aa993b | 9850 | tcount++; |
c906108c | 9851 | if (tcount > 3) |
b80406ac | 9852 | return 0; |
23860348 | 9853 | break; /* Retransmit buffer. */ |
c906108c SS |
9854 | case '$': |
9855 | { | |
2189c312 | 9856 | remote_debug_printf ("Packet instead of Ack, ignoring it"); |
d6f7abdf AC |
9857 | /* It's probably an old response sent because an ACK |
9858 | was lost. Gobble up the packet and ack it so it | |
9859 | doesn't get retransmitted when we resend this | |
9860 | packet. */ | |
6d820c5c | 9861 | skip_frame (); |
c33e31fd | 9862 | remote_serial_write ("+", 1); |
23860348 | 9863 | continue; /* Now, go look for +. */ |
c906108c | 9864 | } |
74531fed PA |
9865 | |
9866 | case '%': | |
9867 | { | |
9868 | int val; | |
9869 | ||
9870 | /* If we got a notification, handle it, and go back to looking | |
9871 | for an ack. */ | |
9872 | /* We've found the start of a notification. Now | |
9873 | collect the data. */ | |
8d64371b | 9874 | val = read_frame (&rs->buf); |
74531fed PA |
9875 | if (val >= 0) |
9876 | { | |
2189c312 SM |
9877 | remote_debug_printf_nofunc |
9878 | (" Notification received: %s", | |
9879 | escape_buffer (rs->buf.data (), val).c_str ()); | |
6e5abd65 | 9880 | |
8d64371b | 9881 | handle_notification (rs->notif_state, rs->buf.data ()); |
74531fed PA |
9882 | /* We're in sync now, rewait for the ack. */ |
9883 | tcount = 0; | |
9884 | } | |
9885 | else | |
2189c312 SM |
9886 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9887 | rs->buf.data ()); | |
74531fed PA |
9888 | continue; |
9889 | } | |
9890 | /* fall-through */ | |
c906108c | 9891 | default: |
2189c312 SM |
9892 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9893 | rs->buf.data ()); | |
c906108c SS |
9894 | continue; |
9895 | } | |
23860348 | 9896 | break; /* Here to retransmit. */ |
c906108c SS |
9897 | } |
9898 | ||
9899 | #if 0 | |
9900 | /* This is wrong. If doing a long backtrace, the user should be | |
dda83cd7 SM |
9901 | able to get out next time we call QUIT, without anything as |
9902 | violent as interrupt_query. If we want to provide a way out of | |
9903 | here without getting to the next QUIT, it should be based on | |
9904 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9905 | if (quit_flag) |
9906 | { | |
9907 | quit_flag = 0; | |
9908 | interrupt_query (); | |
9909 | } | |
9910 | #endif | |
9911 | } | |
a5c0808e | 9912 | |
a6f3e723 | 9913 | return 0; |
c906108c SS |
9914 | } |
9915 | ||
6d820c5c DJ |
9916 | /* Come here after finding the start of a frame when we expected an |
9917 | ack. Do our best to discard the rest of this packet. */ | |
9918 | ||
6b8edb51 PA |
9919 | void |
9920 | remote_target::skip_frame () | |
6d820c5c DJ |
9921 | { |
9922 | int c; | |
9923 | ||
9924 | while (1) | |
9925 | { | |
9926 | c = readchar (remote_timeout); | |
9927 | switch (c) | |
9928 | { | |
9929 | case SERIAL_TIMEOUT: | |
9930 | /* Nothing we can do. */ | |
9931 | return; | |
9932 | case '#': | |
9933 | /* Discard the two bytes of checksum and stop. */ | |
9934 | c = readchar (remote_timeout); | |
9935 | if (c >= 0) | |
9936 | c = readchar (remote_timeout); | |
9937 | ||
9938 | return; | |
9939 | case '*': /* Run length encoding. */ | |
9940 | /* Discard the repeat count. */ | |
9941 | c = readchar (remote_timeout); | |
9942 | if (c < 0) | |
9943 | return; | |
9944 | break; | |
9945 | default: | |
9946 | /* A regular character. */ | |
9947 | break; | |
9948 | } | |
9949 | } | |
9950 | } | |
9951 | ||
c906108c | 9952 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9953 | into *BUF, verifying the checksum, length, and handling run-length |
9954 | compression. NUL terminate the buffer. If there is not enough room, | |
8d64371b | 9955 | expand *BUF. |
c906108c | 9956 | |
c2d11a7d JM |
9957 | Returns -1 on error, number of characters in buffer (ignoring the |
9958 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9959 | SERIAL status indications). */ |
c2d11a7d | 9960 | |
6b8edb51 | 9961 | long |
8d64371b | 9962 | remote_target::read_frame (gdb::char_vector *buf_p) |
c906108c SS |
9963 | { |
9964 | unsigned char csum; | |
c2d11a7d | 9965 | long bc; |
c906108c | 9966 | int c; |
8d64371b | 9967 | char *buf = buf_p->data (); |
a6f3e723 | 9968 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9969 | |
9970 | csum = 0; | |
c2d11a7d | 9971 | bc = 0; |
c906108c SS |
9972 | |
9973 | while (1) | |
9974 | { | |
9975 | c = readchar (remote_timeout); | |
c906108c SS |
9976 | switch (c) |
9977 | { | |
9978 | case SERIAL_TIMEOUT: | |
2189c312 | 9979 | remote_debug_printf ("Timeout in mid-packet, retrying"); |
c2d11a7d | 9980 | return -1; |
2189c312 | 9981 | |
c906108c | 9982 | case '$': |
2189c312 | 9983 | remote_debug_printf ("Saw new packet start in middle of old one"); |
23860348 | 9984 | return -1; /* Start a new packet, count retries. */ |
2189c312 | 9985 | |
c906108c SS |
9986 | case '#': |
9987 | { | |
9988 | unsigned char pktcsum; | |
e1b09194 AC |
9989 | int check_0 = 0; |
9990 | int check_1 = 0; | |
c906108c | 9991 | |
c2d11a7d | 9992 | buf[bc] = '\0'; |
c906108c | 9993 | |
e1b09194 AC |
9994 | check_0 = readchar (remote_timeout); |
9995 | if (check_0 >= 0) | |
9996 | check_1 = readchar (remote_timeout); | |
802188a7 | 9997 | |
e1b09194 AC |
9998 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9999 | { | |
2189c312 | 10000 | remote_debug_printf ("Timeout in checksum, retrying"); |
e1b09194 AC |
10001 | return -1; |
10002 | } | |
10003 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 | 10004 | { |
2189c312 | 10005 | remote_debug_printf ("Communication error in checksum"); |
40e3f985 FN |
10006 | return -1; |
10007 | } | |
c906108c | 10008 | |
a6f3e723 SL |
10009 | /* Don't recompute the checksum; with no ack packets we |
10010 | don't have any way to indicate a packet retransmission | |
10011 | is necessary. */ | |
10012 | if (rs->noack_mode) | |
10013 | return bc; | |
10014 | ||
e1b09194 | 10015 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 10016 | if (csum == pktcsum) |
dda83cd7 | 10017 | return bc; |
c906108c | 10018 | |
2189c312 SM |
10019 | remote_debug_printf |
10020 | ("Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s", | |
10021 | pktcsum, csum, escape_buffer (buf, bc).c_str ()); | |
6e5abd65 | 10022 | |
c2d11a7d | 10023 | /* Number of characters in buffer ignoring trailing |
dda83cd7 | 10024 | NULL. */ |
c2d11a7d | 10025 | return -1; |
c906108c | 10026 | } |
23860348 | 10027 | case '*': /* Run length encoding. */ |
dda83cd7 | 10028 | { |
c2c6d25f | 10029 | int repeat; |
c906108c | 10030 | |
24b21115 | 10031 | csum += c; |
b4501125 AC |
10032 | c = readchar (remote_timeout); |
10033 | csum += c; | |
23860348 | 10034 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 10035 | |
23860348 | 10036 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 10037 | |
6d820c5c | 10038 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 10039 | { |
8d64371b | 10040 | if (bc + repeat - 1 >= buf_p->size () - 1) |
6d820c5c DJ |
10041 | { |
10042 | /* Make some more room in the buffer. */ | |
8d64371b TT |
10043 | buf_p->resize (buf_p->size () + repeat); |
10044 | buf = buf_p->data (); | |
6d820c5c DJ |
10045 | } |
10046 | ||
c2d11a7d JM |
10047 | memset (&buf[bc], buf[bc - 1], repeat); |
10048 | bc += repeat; | |
c2c6d25f JM |
10049 | continue; |
10050 | } | |
10051 | ||
c2d11a7d | 10052 | buf[bc] = '\0'; |
6cb06a8c | 10053 | gdb_printf (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 10054 | return -1; |
c2c6d25f | 10055 | } |
c906108c | 10056 | default: |
8d64371b | 10057 | if (bc >= buf_p->size () - 1) |
c906108c | 10058 | { |
6d820c5c | 10059 | /* Make some more room in the buffer. */ |
8d64371b TT |
10060 | buf_p->resize (buf_p->size () * 2); |
10061 | buf = buf_p->data (); | |
c906108c SS |
10062 | } |
10063 | ||
6d820c5c DJ |
10064 | buf[bc++] = c; |
10065 | csum += c; | |
10066 | continue; | |
c906108c SS |
10067 | } |
10068 | } | |
10069 | } | |
10070 | ||
ed2b7c17 TT |
10071 | /* Set this to the maximum number of seconds to wait instead of waiting forever |
10072 | in target_wait(). If this timer times out, then it generates an error and | |
10073 | the command is aborted. This replaces most of the need for timeouts in the | |
10074 | GDB test suite, and makes it possible to distinguish between a hung target | |
10075 | and one with slow communications. */ | |
10076 | ||
10077 | static int watchdog = 0; | |
10078 | static void | |
10079 | show_watchdog (struct ui_file *file, int from_tty, | |
10080 | struct cmd_list_element *c, const char *value) | |
10081 | { | |
6cb06a8c | 10082 | gdb_printf (file, _("Watchdog timer is %s.\n"), value); |
ed2b7c17 TT |
10083 | } |
10084 | ||
d9fcf2fb | 10085 | /* Read a packet from the remote machine, with error checking, and |
8d64371b TT |
10086 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
10087 | FOREVER, wait forever rather than timing out; this is used (in | |
10088 | synchronous mode) to wait for a target that is is executing user | |
8756b726 | 10089 | code to stop. If FOREVER == false, this function is allowed to time |
8d64371b | 10090 | out gracefully and return an indication of this to the caller. |
ef6a9843 TT |
10091 | Otherwise return the number of bytes read. If IS_NOTIF is not |
10092 | NULL, then consider receiving a notification enough reason to | |
10093 | return to the caller. In this case, *IS_NOTIF is an output boolean | |
10094 | that indicates whether *BUF holds a notification or not (a regular | |
10095 | packet). */ | |
74531fed | 10096 | |
6b8edb51 | 10097 | int |
a60f93c7 | 10098 | remote_target::getpkt (gdb::char_vector *buf, bool forever, bool *is_notif) |
c906108c | 10099 | { |
2d717e4f | 10100 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
10101 | int c; |
10102 | int tries; | |
10103 | int timeout; | |
df4b58fe | 10104 | int val = -1; |
c906108c | 10105 | |
8d64371b | 10106 | strcpy (buf->data (), "timeout"); |
c906108c SS |
10107 | |
10108 | if (forever) | |
74531fed | 10109 | timeout = watchdog > 0 ? watchdog : -1; |
ef6a9843 | 10110 | else if (is_notif != nullptr) |
74531fed PA |
10111 | timeout = 0; /* There should already be a char in the buffer. If |
10112 | not, bail out. */ | |
c906108c SS |
10113 | else |
10114 | timeout = remote_timeout; | |
10115 | ||
10116 | #define MAX_TRIES 3 | |
10117 | ||
74531fed PA |
10118 | /* Process any number of notifications, and then return when |
10119 | we get a packet. */ | |
10120 | for (;;) | |
c906108c | 10121 | { |
d9c43928 | 10122 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
10123 | times. */ |
10124 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 10125 | { |
74531fed PA |
10126 | /* This can loop forever if the remote side sends us |
10127 | characters continuously, but if it pauses, we'll get | |
10128 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
10129 | we'll count that as a retry. | |
10130 | ||
10131 | Note that even when forever is set, we will only wait | |
10132 | forever prior to the start of a packet. After that, we | |
10133 | expect characters to arrive at a brisk pace. They should | |
10134 | show up within remote_timeout intervals. */ | |
10135 | do | |
10136 | c = readchar (timeout); | |
10137 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
10138 | |
10139 | if (c == SERIAL_TIMEOUT) | |
10140 | { | |
ef6a9843 | 10141 | if (is_notif != nullptr) |
74531fed PA |
10142 | return -1; /* Don't complain, it's normal to not get |
10143 | anything in this case. */ | |
10144 | ||
23860348 | 10145 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 10146 | { |
5b6d1e4f | 10147 | remote_unpush_target (this); |
598d3636 JK |
10148 | throw_error (TARGET_CLOSE_ERROR, |
10149 | _("Watchdog timeout has expired. " | |
10150 | "Target detached.")); | |
c906108c | 10151 | } |
2189c312 SM |
10152 | |
10153 | remote_debug_printf ("Timed out."); | |
c906108c | 10154 | } |
74531fed PA |
10155 | else |
10156 | { | |
10157 | /* We've found the start of a packet or notification. | |
10158 | Now collect the data. */ | |
8d64371b | 10159 | val = read_frame (buf); |
74531fed PA |
10160 | if (val >= 0) |
10161 | break; | |
10162 | } | |
10163 | ||
c33e31fd | 10164 | remote_serial_write ("-", 1); |
c906108c | 10165 | } |
c906108c | 10166 | |
74531fed PA |
10167 | if (tries > MAX_TRIES) |
10168 | { | |
10169 | /* We have tried hard enough, and just can't receive the | |
10170 | packet/notification. Give up. */ | |
6cb06a8c | 10171 | gdb_printf (_("Ignoring packet error, continuing...\n")); |
c906108c | 10172 | |
74531fed PA |
10173 | /* Skip the ack char if we're in no-ack mode. */ |
10174 | if (!rs->noack_mode) | |
c33e31fd | 10175 | remote_serial_write ("+", 1); |
74531fed PA |
10176 | return -1; |
10177 | } | |
c906108c | 10178 | |
74531fed PA |
10179 | /* If we got an ordinary packet, return that to our caller. */ |
10180 | if (c == '$') | |
c906108c SS |
10181 | { |
10182 | if (remote_debug) | |
43e526b9 | 10183 | { |
6cc8564b LM |
10184 | int max_chars; |
10185 | ||
10186 | if (remote_packet_max_chars < 0) | |
10187 | max_chars = val; | |
10188 | else | |
10189 | max_chars = remote_packet_max_chars; | |
10190 | ||
6f8976bf | 10191 | std::string str |
8d64371b | 10192 | = escape_buffer (buf->data (), |
6cc8564b | 10193 | std::min (val, max_chars)); |
6f8976bf | 10194 | |
6cc8564b | 10195 | if (val > max_chars) |
2189c312 SM |
10196 | remote_debug_printf_nofunc |
10197 | ("Packet received: %s [%d bytes omitted]", str.c_str (), | |
10198 | val - max_chars); | |
10199 | else | |
10200 | remote_debug_printf_nofunc ("Packet received: %s", | |
10201 | str.c_str ()); | |
43e526b9 | 10202 | } |
a6f3e723 SL |
10203 | |
10204 | /* Skip the ack char if we're in no-ack mode. */ | |
10205 | if (!rs->noack_mode) | |
c33e31fd | 10206 | remote_serial_write ("+", 1); |
fee9eda9 | 10207 | if (is_notif != NULL) |
8756b726 | 10208 | *is_notif = false; |
0876f84a | 10209 | return val; |
c906108c SS |
10210 | } |
10211 | ||
74531fed PA |
10212 | /* If we got a notification, handle it, and go back to looking |
10213 | for a packet. */ | |
10214 | else | |
10215 | { | |
10216 | gdb_assert (c == '%'); | |
10217 | ||
2189c312 SM |
10218 | remote_debug_printf_nofunc |
10219 | (" Notification received: %s", | |
10220 | escape_buffer (buf->data (), val).c_str ()); | |
6e5abd65 | 10221 | |
fee9eda9 | 10222 | if (is_notif != NULL) |
8756b726 | 10223 | *is_notif = true; |
c906108c | 10224 | |
8d64371b | 10225 | handle_notification (rs->notif_state, buf->data ()); |
c906108c | 10226 | |
74531fed | 10227 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 10228 | |
ef6a9843 | 10229 | if (is_notif != nullptr) |
fee9eda9 | 10230 | return val; |
74531fed PA |
10231 | } |
10232 | } | |
10233 | } | |
10234 | ||
28561a65 | 10235 | /* Kill any new fork children of inferior INF that haven't been |
cbb8991c DB |
10236 | processed by follow_fork. */ |
10237 | ||
6b8edb51 | 10238 | void |
28561a65 | 10239 | remote_target::kill_new_fork_children (inferior *inf) |
cbb8991c | 10240 | { |
6b8edb51 | 10241 | remote_state *rs = get_remote_state (); |
42938c1a | 10242 | const notif_client *notif = ¬if_client_stop; |
cbb8991c | 10243 | |
28561a65 SM |
10244 | /* Kill the fork child threads of any threads in inferior INF that are stopped |
10245 | at a fork event. */ | |
10246 | for (thread_info *thread : inf->non_exited_threads ()) | |
cbb8991c | 10247 | { |
28561a65 | 10248 | const target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c | 10249 | |
28561a65 SM |
10250 | if (ws == nullptr) |
10251 | continue; | |
cbb8991c | 10252 | |
28561a65 SM |
10253 | int child_pid = ws->child_ptid ().pid (); |
10254 | int res = remote_vkill (child_pid); | |
10255 | ||
10256 | if (res != 0) | |
10257 | error (_("Can't kill fork child process %d"), child_pid); | |
cbb8991c DB |
10258 | } |
10259 | ||
10260 | /* Check for any pending fork events (not reported or processed yet) | |
28561a65 | 10261 | in inferior INF and kill those fork child threads as well. */ |
cbb8991c | 10262 | remote_notif_get_pending_events (notif); |
953edf2b | 10263 | for (auto &event : rs->stop_reply_queue) |
28561a65 SM |
10264 | { |
10265 | if (event->ptid.pid () != inf->pid) | |
10266 | continue; | |
953edf2b | 10267 | |
28561a65 SM |
10268 | if (!is_fork_status (event->ws.kind ())) |
10269 | continue; | |
10270 | ||
10271 | int child_pid = event->ws.child_ptid ().pid (); | |
10272 | int res = remote_vkill (child_pid); | |
10273 | ||
10274 | if (res != 0) | |
10275 | error (_("Can't kill fork child process %d"), child_pid); | |
10276 | } | |
cbb8991c DB |
10277 | } |
10278 | ||
c906108c | 10279 | \f |
8020350c DB |
10280 | /* Target hook to kill the current inferior. */ |
10281 | ||
f6ac5f3d PA |
10282 | void |
10283 | remote_target::kill () | |
43ff13b4 | 10284 | { |
8020350c | 10285 | int res = -1; |
28561a65 | 10286 | inferior *inf = find_inferior_pid (this, inferior_ptid.pid ()); |
0fdf84ca | 10287 | |
28561a65 SM |
10288 | gdb_assert (inf != nullptr); |
10289 | ||
ff52c073 | 10290 | if (m_features.packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 10291 | { |
8020350c DB |
10292 | /* If we're stopped while forking and we haven't followed yet, |
10293 | kill the child task. We need to do this before killing the | |
10294 | parent task because if this is a vfork then the parent will | |
10295 | be sleeping. */ | |
28561a65 | 10296 | kill_new_fork_children (inf); |
8020350c | 10297 | |
28561a65 | 10298 | res = remote_vkill (inf->pid); |
8020350c | 10299 | if (res == 0) |
0fdf84ca | 10300 | { |
bc1e6c81 | 10301 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
10302 | return; |
10303 | } | |
8020350c | 10304 | } |
0fdf84ca | 10305 | |
8020350c DB |
10306 | /* If we are in 'target remote' mode and we are killing the only |
10307 | inferior, then we will tell gdbserver to exit and unpush the | |
10308 | target. */ | |
ff52c073 | 10309 | if (res == -1 && !m_features.remote_multi_process_p () |
5b6d1e4f | 10310 | && number_of_live_inferiors (this) == 1) |
8020350c DB |
10311 | { |
10312 | remote_kill_k (); | |
10313 | ||
10314 | /* We've killed the remote end, we get to mourn it. If we are | |
10315 | not in extended mode, mourning the inferior also unpushes | |
10316 | remote_ops from the target stack, which closes the remote | |
10317 | connection. */ | |
bc1e6c81 | 10318 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
10319 | |
10320 | return; | |
0fdf84ca | 10321 | } |
43ff13b4 | 10322 | |
8020350c | 10323 | error (_("Can't kill process")); |
43ff13b4 JM |
10324 | } |
10325 | ||
8020350c DB |
10326 | /* Send a kill request to the target using the 'vKill' packet. */ |
10327 | ||
6b8edb51 PA |
10328 | int |
10329 | remote_target::remote_vkill (int pid) | |
82f73884 | 10330 | { |
ff52c073 | 10331 | if (m_features.packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
10332 | return -1; |
10333 | ||
6b8edb51 PA |
10334 | remote_state *rs = get_remote_state (); |
10335 | ||
82f73884 | 10336 | /* Tell the remote target to detach. */ |
8d64371b | 10337 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vKill;%x", pid); |
82f73884 | 10338 | putpkt (rs->buf); |
aa7b36b8 | 10339 | getpkt (&rs->buf); |
82f73884 | 10340 | |
ff52c073 | 10341 | switch (m_features.packet_ok (rs->buf, PACKET_vKill)) |
4082afcc PA |
10342 | { |
10343 | case PACKET_OK: | |
10344 | return 0; | |
10345 | case PACKET_ERROR: | |
10346 | return 1; | |
10347 | case PACKET_UNKNOWN: | |
10348 | return -1; | |
10349 | default: | |
f34652de | 10350 | internal_error (_("Bad result from packet_ok")); |
4082afcc | 10351 | } |
82f73884 PA |
10352 | } |
10353 | ||
8020350c DB |
10354 | /* Send a kill request to the target using the 'k' packet. */ |
10355 | ||
6b8edb51 PA |
10356 | void |
10357 | remote_target::remote_kill_k () | |
82f73884 | 10358 | { |
8020350c DB |
10359 | /* Catch errors so the user can quit from gdb even when we |
10360 | aren't on speaking terms with the remote system. */ | |
a70b8144 | 10361 | try |
82f73884 | 10362 | { |
82f73884 | 10363 | putpkt ("k"); |
82f73884 | 10364 | } |
230d2906 | 10365 | catch (const gdb_exception_error &ex) |
8020350c DB |
10366 | { |
10367 | if (ex.error == TARGET_CLOSE_ERROR) | |
10368 | { | |
10369 | /* If we got an (EOF) error that caused the target | |
10370 | to go away, then we're done, that's what we wanted. | |
10371 | "k" is susceptible to cause a premature EOF, given | |
10372 | that the remote server isn't actually required to | |
10373 | reply to "k", and it can happen that it doesn't | |
10374 | even get to reply ACK to the "k". */ | |
10375 | return; | |
10376 | } | |
82f73884 | 10377 | |
8020350c DB |
10378 | /* Otherwise, something went wrong. We didn't actually kill |
10379 | the target. Just propagate the exception, and let the | |
10380 | user or higher layers decide what to do. */ | |
eedc3f4f | 10381 | throw; |
8020350c | 10382 | } |
82f73884 PA |
10383 | } |
10384 | ||
f6ac5f3d PA |
10385 | void |
10386 | remote_target::mourn_inferior () | |
c906108c | 10387 | { |
8020350c | 10388 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 10389 | |
9607784a PA |
10390 | /* We're no longer interested in notification events of an inferior |
10391 | that exited or was killed/detached. */ | |
10392 | discard_pending_stop_replies (current_inferior ()); | |
10393 | ||
8020350c | 10394 | /* In 'target remote' mode with one inferior, we close the connection. */ |
5b6d1e4f | 10395 | if (!rs->extended && number_of_live_inferiors (this) <= 1) |
8020350c | 10396 | { |
5b6d1e4f | 10397 | remote_unpush_target (this); |
8020350c DB |
10398 | return; |
10399 | } | |
c906108c | 10400 | |
e24a49d8 PA |
10401 | /* In case we got here due to an error, but we're going to stay |
10402 | connected. */ | |
10403 | rs->waiting_for_stop_reply = 0; | |
10404 | ||
dc1981d7 PA |
10405 | /* If the current general thread belonged to the process we just |
10406 | detached from or has exited, the remote side current general | |
10407 | thread becomes undefined. Considering a case like this: | |
10408 | ||
10409 | - We just got here due to a detach. | |
10410 | - The process that we're detaching from happens to immediately | |
10411 | report a global breakpoint being hit in non-stop mode, in the | |
10412 | same thread we had selected before. | |
10413 | - GDB attaches to this process again. | |
10414 | - This event happens to be the next event we handle. | |
10415 | ||
10416 | GDB would consider that the current general thread didn't need to | |
10417 | be set on the stub side (with Hg), since for all it knew, | |
10418 | GENERAL_THREAD hadn't changed. | |
10419 | ||
10420 | Notice that although in all-stop mode, the remote server always | |
10421 | sets the current thread to the thread reporting the stop event, | |
10422 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
10423 | not* change the current thread when reporting a breakpoint hit, | |
10424 | due to the decoupling of event reporting and event handling. | |
10425 | ||
10426 | To keep things simple, we always invalidate our notion of the | |
10427 | current thread. */ | |
47f8a51d | 10428 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 10429 | |
8020350c | 10430 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 | 10431 | generic_mourn_inferior (); |
2d717e4f | 10432 | } |
c906108c | 10433 | |
57810aa7 | 10434 | bool |
f6ac5f3d | 10435 | extended_remote_target::supports_disable_randomization () |
03583c20 | 10436 | { |
ff52c073 CS |
10437 | return (m_features.packet_support (PACKET_QDisableRandomization) |
10438 | == PACKET_ENABLE); | |
03583c20 UW |
10439 | } |
10440 | ||
6b8edb51 PA |
10441 | void |
10442 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
10443 | { |
10444 | struct remote_state *rs = get_remote_state (); | |
10445 | char *reply; | |
10446 | ||
8d64371b TT |
10447 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
10448 | "QDisableRandomization:%x", val); | |
03583c20 | 10449 | putpkt (rs->buf); |
b6bb3468 | 10450 | reply = remote_get_noisy_reply (); |
03583c20 UW |
10451 | if (*reply == '\0') |
10452 | error (_("Target does not support QDisableRandomization.")); | |
10453 | if (strcmp (reply, "OK") != 0) | |
10454 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
10455 | } | |
10456 | ||
6b8edb51 PA |
10457 | int |
10458 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
10459 | { |
10460 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 10461 | int len; |
94585166 | 10462 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 10463 | |
2d717e4f DJ |
10464 | /* If the user has disabled vRun support, or we have detected that |
10465 | support is not available, do not try it. */ | |
ff52c073 | 10466 | if (m_features.packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 10467 | return -1; |
424163ea | 10468 | |
8d64371b TT |
10469 | strcpy (rs->buf.data (), "vRun;"); |
10470 | len = strlen (rs->buf.data ()); | |
c906108c | 10471 | |
2d717e4f DJ |
10472 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
10473 | error (_("Remote file name too long for run packet")); | |
8d64371b | 10474 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf.data () + len, |
9f1b45b0 | 10475 | strlen (remote_exec_file)); |
2d717e4f | 10476 | |
7c5ded6a | 10477 | if (!args.empty ()) |
2d717e4f | 10478 | { |
2d717e4f | 10479 | int i; |
2d717e4f | 10480 | |
773a1edc | 10481 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
10482 | for (i = 0; argv[i] != NULL; i++) |
10483 | { | |
10484 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
10485 | error (_("Argument list too long for run packet")); | |
10486 | rs->buf[len++] = ';'; | |
8d64371b | 10487 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf.data () + len, |
9f1b45b0 | 10488 | strlen (argv[i])); |
2d717e4f | 10489 | } |
2d717e4f DJ |
10490 | } |
10491 | ||
10492 | rs->buf[len++] = '\0'; | |
10493 | ||
10494 | putpkt (rs->buf); | |
aa7b36b8 | 10495 | getpkt (&rs->buf); |
2d717e4f | 10496 | |
ff52c073 | 10497 | switch (m_features.packet_ok (rs->buf, PACKET_vRun)) |
2d717e4f | 10498 | { |
4082afcc | 10499 | case PACKET_OK: |
3405876a | 10500 | /* We have a wait response. All is well. */ |
2d717e4f | 10501 | return 0; |
4082afcc PA |
10502 | case PACKET_UNKNOWN: |
10503 | return -1; | |
10504 | case PACKET_ERROR: | |
2d717e4f DJ |
10505 | if (remote_exec_file[0] == '\0') |
10506 | error (_("Running the default executable on the remote target failed; " | |
10507 | "try \"set remote exec-file\"?")); | |
10508 | else | |
10509 | error (_("Running \"%s\" on the remote target failed"), | |
10510 | remote_exec_file); | |
4082afcc | 10511 | default: |
557b4d76 | 10512 | gdb_assert_not_reached ("bad switch"); |
2d717e4f | 10513 | } |
c906108c SS |
10514 | } |
10515 | ||
0a2dde4a SDJ |
10516 | /* Helper function to send set/unset environment packets. ACTION is |
10517 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
10518 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
10519 | sent. */ | |
10520 | ||
6b8edb51 PA |
10521 | void |
10522 | remote_target::send_environment_packet (const char *action, | |
10523 | const char *packet, | |
10524 | const char *value) | |
0a2dde4a | 10525 | { |
6b8edb51 PA |
10526 | remote_state *rs = get_remote_state (); |
10527 | ||
0a2dde4a SDJ |
10528 | /* Convert the environment variable to an hex string, which |
10529 | is the best format to be transmitted over the wire. */ | |
10530 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
10531 | strlen (value)); | |
10532 | ||
8d64371b | 10533 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
0a2dde4a SDJ |
10534 | "%s:%s", packet, encoded_value.c_str ()); |
10535 | ||
10536 | putpkt (rs->buf); | |
aa7b36b8 | 10537 | getpkt (&rs->buf); |
8d64371b | 10538 | if (strcmp (rs->buf.data (), "OK") != 0) |
0a2dde4a SDJ |
10539 | warning (_("Unable to %s environment variable '%s' on remote."), |
10540 | action, value); | |
10541 | } | |
10542 | ||
10543 | /* Helper function to handle the QEnvironment* packets. */ | |
10544 | ||
6b8edb51 PA |
10545 | void |
10546 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 10547 | { |
6b8edb51 PA |
10548 | remote_state *rs = get_remote_state (); |
10549 | ||
ff52c073 | 10550 | if (m_features.packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
0a2dde4a SDJ |
10551 | { |
10552 | putpkt ("QEnvironmentReset"); | |
aa7b36b8 | 10553 | getpkt (&rs->buf); |
8d64371b | 10554 | if (strcmp (rs->buf.data (), "OK") != 0) |
0a2dde4a SDJ |
10555 | warning (_("Unable to reset environment on remote.")); |
10556 | } | |
10557 | ||
10558 | gdb_environ *e = ¤t_inferior ()->environment; | |
10559 | ||
ff52c073 CS |
10560 | if (m_features.packet_support (PACKET_QEnvironmentHexEncoded) |
10561 | != PACKET_DISABLE) | |
10562 | { | |
10563 | for (const std::string &el : e->user_set_env ()) | |
10564 | send_environment_packet ("set", "QEnvironmentHexEncoded", | |
10565 | el.c_str ()); | |
10566 | } | |
10567 | ||
0a2dde4a | 10568 | |
ff52c073 | 10569 | if (m_features.packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) |
0a2dde4a | 10570 | for (const std::string &el : e->user_unset_env ()) |
6b8edb51 | 10571 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
10572 | } |
10573 | ||
bc3b087d SDJ |
10574 | /* Helper function to set the current working directory for the |
10575 | inferior in the remote target. */ | |
10576 | ||
6b8edb51 PA |
10577 | void |
10578 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d | 10579 | { |
ff52c073 | 10580 | if (m_features.packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) |
bc3b087d | 10581 | { |
11bd012e | 10582 | const std::string &inferior_cwd = current_inferior ()->cwd (); |
6b8edb51 | 10583 | remote_state *rs = get_remote_state (); |
bc3b087d | 10584 | |
11bd012e | 10585 | if (!inferior_cwd.empty ()) |
bc3b087d | 10586 | { |
11bd012e SM |
10587 | std::string hexpath |
10588 | = bin2hex ((const gdb_byte *) inferior_cwd.data (), | |
10589 | inferior_cwd.size ()); | |
bc3b087d | 10590 | |
8d64371b | 10591 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10592 | "QSetWorkingDir:%s", hexpath.c_str ()); |
10593 | } | |
10594 | else | |
10595 | { | |
10596 | /* An empty inferior_cwd means that the user wants us to | |
10597 | reset the remote server's inferior's cwd. */ | |
8d64371b | 10598 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10599 | "QSetWorkingDir:"); |
10600 | } | |
10601 | ||
10602 | putpkt (rs->buf); | |
aa7b36b8 | 10603 | getpkt (&rs->buf); |
ff52c073 | 10604 | if (m_features.packet_ok (rs->buf, PACKET_QSetWorkingDir) != PACKET_OK) |
bc3b087d SDJ |
10605 | error (_("\ |
10606 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10607 | directory: %s"), | |
8d64371b | 10608 | rs->buf.data ()); |
bc3b087d SDJ |
10609 | |
10610 | } | |
10611 | } | |
10612 | ||
2d717e4f DJ |
10613 | /* In the extended protocol we want to be able to do things like |
10614 | "run" and have them basically work as expected. So we need | |
10615 | a special create_inferior function. We support changing the | |
10616 | executable file and the command line arguments, but not the | |
10617 | environment. */ | |
10618 | ||
f6ac5f3d PA |
10619 | void |
10620 | extended_remote_target::create_inferior (const char *exec_file, | |
10621 | const std::string &args, | |
10622 | char **env, int from_tty) | |
43ff13b4 | 10623 | { |
3405876a PA |
10624 | int run_worked; |
10625 | char *stop_reply; | |
10626 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10627 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10628 | |
43ff13b4 | 10629 | /* If running asynchronously, register the target file descriptor |
23860348 | 10630 | with the event loop. */ |
75c99385 | 10631 | if (target_can_async_p ()) |
4a570176 | 10632 | target_async (true); |
43ff13b4 | 10633 | |
03583c20 | 10634 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10635 | if (supports_disable_randomization ()) |
03583c20 UW |
10636 | extended_remote_disable_randomization (disable_randomization); |
10637 | ||
aefd8b33 SDJ |
10638 | /* If startup-with-shell is on, we inform gdbserver to start the |
10639 | remote inferior using a shell. */ | |
ff52c073 | 10640 | if (m_features.packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) |
aefd8b33 | 10641 | { |
8d64371b | 10642 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
aefd8b33 SDJ |
10643 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); |
10644 | putpkt (rs->buf); | |
aa7b36b8 | 10645 | getpkt (&rs->buf); |
8d64371b | 10646 | if (strcmp (rs->buf.data (), "OK") != 0) |
aefd8b33 SDJ |
10647 | error (_("\ |
10648 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
8d64371b | 10649 | rs->buf.data ()); |
aefd8b33 SDJ |
10650 | } |
10651 | ||
6b8edb51 | 10652 | extended_remote_environment_support (); |
0a2dde4a | 10653 | |
6b8edb51 | 10654 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10655 | |
43ff13b4 | 10656 | /* Now restart the remote server. */ |
3405876a PA |
10657 | run_worked = extended_remote_run (args) != -1; |
10658 | if (!run_worked) | |
2d717e4f DJ |
10659 | { |
10660 | /* vRun was not supported. Fail if we need it to do what the | |
10661 | user requested. */ | |
10662 | if (remote_exec_file[0]) | |
10663 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10664 | if (!args.empty ()) |
65e65158 | 10665 | error (_("Remote target does not support \"set args\" or run ARGS")); |
43ff13b4 | 10666 | |
2d717e4f DJ |
10667 | /* Fall back to "R". */ |
10668 | extended_remote_restart (); | |
10669 | } | |
424163ea | 10670 | |
3405876a | 10671 | /* vRun's success return is a stop reply. */ |
8d64371b | 10672 | stop_reply = run_worked ? rs->buf.data () : NULL; |
3405876a | 10673 | add_current_inferior_and_thread (stop_reply); |
c0a2216e | 10674 | |
2d717e4f DJ |
10675 | /* Get updated offsets, if the stub uses qOffsets. */ |
10676 | get_offsets (); | |
2d717e4f | 10677 | } |
c906108c | 10678 | \f |
c5aa993b | 10679 | |
b775012e LM |
10680 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10681 | the list of conditions (in agent expression bytecode format), if any, the | |
10682 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10683 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10684 | |
10685 | static int | |
10686 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10687 | struct bp_target_info *bp_tgt, char *buf, |
10688 | char *buf_end) | |
b775012e | 10689 | { |
3cde5c42 | 10690 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10691 | return 0; |
10692 | ||
10693 | buf += strlen (buf); | |
bba74b36 | 10694 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10695 | buf++; |
10696 | ||
83621223 | 10697 | /* Send conditions to the target. */ |
d538e36d | 10698 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10699 | { |
6f96f485 | 10700 | xsnprintf (buf, buf_end - buf, "X%x,", (int) aexpr->buf.size ()); |
b775012e | 10701 | buf += strlen (buf); |
6f96f485 | 10702 | for (int i = 0; i < aexpr->buf.size (); ++i) |
b775012e LM |
10703 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10704 | *buf = '\0'; | |
10705 | } | |
b775012e LM |
10706 | return 0; |
10707 | } | |
10708 | ||
d3ce09f5 SS |
10709 | static void |
10710 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10711 | struct bp_target_info *bp_tgt, char *buf) | |
10712 | { | |
3cde5c42 | 10713 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10714 | return; |
10715 | ||
10716 | buf += strlen (buf); | |
10717 | ||
10718 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10719 | buf += strlen (buf); | |
10720 | ||
10721 | /* Concatenate all the agent expressions that are commands into the | |
10722 | cmds parameter. */ | |
df97be55 | 10723 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 | 10724 | { |
6f96f485 | 10725 | sprintf (buf, "X%x,", (int) aexpr->buf.size ()); |
d3ce09f5 | 10726 | buf += strlen (buf); |
6f96f485 | 10727 | for (int i = 0; i < aexpr->buf.size (); ++i) |
d3ce09f5 SS |
10728 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10729 | *buf = '\0'; | |
10730 | } | |
d3ce09f5 SS |
10731 | } |
10732 | ||
8181d85f DJ |
10733 | /* Insert a breakpoint. On targets that have software breakpoint |
10734 | support, we ask the remote target to do the work; on targets | |
10735 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10736 | |
f6ac5f3d PA |
10737 | int |
10738 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10739 | struct bp_target_info *bp_tgt) | |
c906108c | 10740 | { |
d471ea57 AC |
10741 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10742 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10743 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10744 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10745 | |
ff52c073 | 10746 | if (m_features.packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10747 | { |
0d5ed153 | 10748 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10749 | struct remote_state *rs; |
bba74b36 | 10750 | char *p, *endbuf; |
4fff2411 | 10751 | |
28439a30 PA |
10752 | /* Make sure the remote is pointing at the right process, if |
10753 | necessary. */ | |
99d9c3b9 | 10754 | if (!gdbarch_has_global_breakpoints (current_inferior ()->arch ())) |
28439a30 PA |
10755 | set_general_process (); |
10756 | ||
4fff2411 | 10757 | rs = get_remote_state (); |
8d64371b TT |
10758 | p = rs->buf.data (); |
10759 | endbuf = p + get_remote_packet_size (); | |
802188a7 | 10760 | |
96baa820 JM |
10761 | *(p++) = 'Z'; |
10762 | *(p++) = '0'; | |
10763 | *(p++) = ','; | |
7c0f6dcc | 10764 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10765 | p += hexnumstr (p, addr); |
579c6ad9 | 10766 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10767 | |
f6ac5f3d | 10768 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10769 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10770 | |
f6ac5f3d | 10771 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10772 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10773 | ||
6d820c5c | 10774 | putpkt (rs->buf); |
aa7b36b8 | 10775 | getpkt (&rs->buf); |
96baa820 | 10776 | |
ff52c073 | 10777 | switch (m_features.packet_ok (rs->buf, PACKET_Z0)) |
96baa820 | 10778 | { |
d471ea57 AC |
10779 | case PACKET_ERROR: |
10780 | return -1; | |
10781 | case PACKET_OK: | |
10782 | return 0; | |
10783 | case PACKET_UNKNOWN: | |
10784 | break; | |
96baa820 JM |
10785 | } |
10786 | } | |
c906108c | 10787 | |
0000e5cc PA |
10788 | /* If this breakpoint has target-side commands but this stub doesn't |
10789 | support Z0 packets, throw error. */ | |
3cde5c42 | 10790 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10791 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10792 | Target doesn't support breakpoints that have target side commands.")); | |
10793 | ||
f6ac5f3d | 10794 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10795 | } |
10796 | ||
f6ac5f3d PA |
10797 | int |
10798 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10799 | struct bp_target_info *bp_tgt, | |
10800 | enum remove_bp_reason reason) | |
c906108c | 10801 | { |
8181d85f | 10802 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10803 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10804 | |
ff52c073 | 10805 | if (m_features.packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10806 | { |
8d64371b TT |
10807 | char *p = rs->buf.data (); |
10808 | char *endbuf = p + get_remote_packet_size (); | |
802188a7 | 10809 | |
28439a30 PA |
10810 | /* Make sure the remote is pointing at the right process, if |
10811 | necessary. */ | |
99d9c3b9 | 10812 | if (!gdbarch_has_global_breakpoints (current_inferior ()->arch ())) |
28439a30 PA |
10813 | set_general_process (); |
10814 | ||
96baa820 JM |
10815 | *(p++) = 'z'; |
10816 | *(p++) = '0'; | |
10817 | *(p++) = ','; | |
10818 | ||
8181d85f DJ |
10819 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10820 | p += hexnumstr (p, addr); | |
579c6ad9 | 10821 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10822 | |
6d820c5c | 10823 | putpkt (rs->buf); |
aa7b36b8 | 10824 | getpkt (&rs->buf); |
96baa820 | 10825 | |
6d820c5c | 10826 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10827 | } |
10828 | ||
f6ac5f3d | 10829 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10830 | } |
10831 | ||
f486487f | 10832 | static enum Z_packet_type |
d471ea57 AC |
10833 | watchpoint_to_Z_packet (int type) |
10834 | { | |
10835 | switch (type) | |
10836 | { | |
10837 | case hw_write: | |
bb858e6a | 10838 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10839 | break; |
10840 | case hw_read: | |
bb858e6a | 10841 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10842 | break; |
10843 | case hw_access: | |
bb858e6a | 10844 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10845 | break; |
10846 | default: | |
f34652de | 10847 | internal_error (_("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10848 | } |
10849 | } | |
10850 | ||
f6ac5f3d PA |
10851 | int |
10852 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10853 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10854 | { |
d01949b6 | 10855 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10856 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10857 | char *p; |
d471ea57 | 10858 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10859 | |
24a601dd TV |
10860 | if (m_features.packet_support ((to_underlying (PACKET_Z0) |
10861 | + to_underlying (packet))) == PACKET_DISABLE) | |
85d721b8 | 10862 | return 1; |
802188a7 | 10863 | |
28439a30 PA |
10864 | /* Make sure the remote is pointing at the right process, if |
10865 | necessary. */ | |
99d9c3b9 | 10866 | if (!gdbarch_has_global_breakpoints (current_inferior ()->arch ())) |
28439a30 PA |
10867 | set_general_process (); |
10868 | ||
8d64371b TT |
10869 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "Z%x,", packet); |
10870 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10871 | addr = remote_address_masked (addr); |
10872 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10873 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10874 | |
6d820c5c | 10875 | putpkt (rs->buf); |
aa7b36b8 | 10876 | getpkt (&rs->buf); |
96baa820 | 10877 | |
24a601dd TV |
10878 | switch (m_features.packet_ok (rs->buf, (to_underlying (PACKET_Z0) |
10879 | + to_underlying (packet)))) | |
d471ea57 AC |
10880 | { |
10881 | case PACKET_ERROR: | |
d471ea57 | 10882 | return -1; |
85d721b8 PA |
10883 | case PACKET_UNKNOWN: |
10884 | return 1; | |
d471ea57 AC |
10885 | case PACKET_OK: |
10886 | return 0; | |
10887 | } | |
f34652de | 10888 | internal_error (_("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10889 | } |
10890 | ||
57810aa7 | 10891 | bool |
f6ac5f3d PA |
10892 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10893 | CORE_ADDR start, int length) | |
283002cf MR |
10894 | { |
10895 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10896 | ||
10897 | return diff < length; | |
10898 | } | |
10899 | ||
d471ea57 | 10900 | |
f6ac5f3d PA |
10901 | int |
10902 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10903 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10904 | { |
d01949b6 | 10905 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10906 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10907 | char *p; |
d471ea57 AC |
10908 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10909 | ||
24a601dd TV |
10910 | if (m_features.packet_support ((to_underlying (PACKET_Z0) |
10911 | + to_underlying (packet))) == PACKET_DISABLE) | |
5cffb350 | 10912 | return -1; |
802188a7 | 10913 | |
28439a30 PA |
10914 | /* Make sure the remote is pointing at the right process, if |
10915 | necessary. */ | |
99d9c3b9 | 10916 | if (!gdbarch_has_global_breakpoints (current_inferior ()->arch ())) |
28439a30 PA |
10917 | set_general_process (); |
10918 | ||
8d64371b TT |
10919 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "z%x,", packet); |
10920 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10921 | addr = remote_address_masked (addr); |
10922 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10923 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c | 10924 | putpkt (rs->buf); |
aa7b36b8 | 10925 | getpkt (&rs->buf); |
96baa820 | 10926 | |
24a601dd TV |
10927 | switch (m_features.packet_ok (rs->buf, (to_underlying (PACKET_Z0) |
10928 | + to_underlying (packet)))) | |
d471ea57 AC |
10929 | { |
10930 | case PACKET_ERROR: | |
10931 | case PACKET_UNKNOWN: | |
10932 | return -1; | |
10933 | case PACKET_OK: | |
10934 | return 0; | |
10935 | } | |
f34652de | 10936 | internal_error (_("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10937 | } |
10938 | ||
3c3bea1c | 10939 | |
60fcc1c3 TT |
10940 | static int remote_hw_watchpoint_limit = -1; |
10941 | static int remote_hw_watchpoint_length_limit = -1; | |
10942 | static int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 10943 | |
f6ac5f3d PA |
10944 | int |
10945 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10946 | { |
10947 | if (remote_hw_watchpoint_length_limit == 0) | |
10948 | return 0; | |
10949 | else if (remote_hw_watchpoint_length_limit < 0) | |
10950 | return 1; | |
10951 | else if (len <= remote_hw_watchpoint_length_limit) | |
10952 | return 1; | |
10953 | else | |
10954 | return 0; | |
10955 | } | |
10956 | ||
f6ac5f3d PA |
10957 | int |
10958 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10959 | { |
3c3bea1c GS |
10960 | if (type == bp_hardware_breakpoint) |
10961 | { | |
10962 | if (remote_hw_breakpoint_limit == 0) | |
10963 | return 0; | |
501eef12 AC |
10964 | else if (remote_hw_breakpoint_limit < 0) |
10965 | return 1; | |
3c3bea1c GS |
10966 | else if (cnt <= remote_hw_breakpoint_limit) |
10967 | return 1; | |
10968 | } | |
10969 | else | |
10970 | { | |
10971 | if (remote_hw_watchpoint_limit == 0) | |
10972 | return 0; | |
501eef12 AC |
10973 | else if (remote_hw_watchpoint_limit < 0) |
10974 | return 1; | |
3c3bea1c GS |
10975 | else if (ot) |
10976 | return -1; | |
10977 | else if (cnt <= remote_hw_watchpoint_limit) | |
10978 | return 1; | |
10979 | } | |
10980 | return -1; | |
10981 | } | |
10982 | ||
f7e6eed5 PA |
10983 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10984 | ||
57810aa7 | 10985 | bool |
f6ac5f3d | 10986 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10987 | { |
799a2abe | 10988 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10989 | |
799a2abe | 10990 | return (thread->priv != NULL |
7aabaf9d SM |
10991 | && (get_remote_thread_info (thread)->stop_reason |
10992 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10993 | } |
10994 | ||
10995 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10996 | remote. */ | |
10997 | ||
57810aa7 | 10998 | bool |
f6ac5f3d | 10999 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 11000 | { |
ff52c073 | 11001 | return (m_features.packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
f7e6eed5 PA |
11002 | } |
11003 | ||
11004 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
11005 | ||
57810aa7 | 11006 | bool |
f6ac5f3d | 11007 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 11008 | { |
799a2abe | 11009 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 11010 | |
799a2abe | 11011 | return (thread->priv != NULL |
7aabaf9d SM |
11012 | && (get_remote_thread_info (thread)->stop_reason |
11013 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
11014 | } |
11015 | ||
11016 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
11017 | remote. */ | |
11018 | ||
57810aa7 | 11019 | bool |
f6ac5f3d | 11020 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 11021 | { |
ff52c073 | 11022 | return (m_features.packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
f7e6eed5 PA |
11023 | } |
11024 | ||
57810aa7 | 11025 | bool |
f6ac5f3d | 11026 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 11027 | { |
799a2abe | 11028 | struct thread_info *thread = inferior_thread (); |
ee154bee | 11029 | |
799a2abe | 11030 | return (thread->priv != NULL |
7aabaf9d SM |
11031 | && (get_remote_thread_info (thread)->stop_reason |
11032 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
11033 | } |
11034 | ||
57810aa7 | 11035 | bool |
f6ac5f3d | 11036 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 11037 | { |
799a2abe | 11038 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 11039 | |
799a2abe | 11040 | if (thread->priv != NULL |
7aabaf9d SM |
11041 | && (get_remote_thread_info (thread)->stop_reason |
11042 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 11043 | { |
7aabaf9d | 11044 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 11045 | return true; |
4aa7a7f5 JJ |
11046 | } |
11047 | ||
57810aa7 | 11048 | return false; |
3c3bea1c GS |
11049 | } |
11050 | ||
11051 | ||
f6ac5f3d PA |
11052 | int |
11053 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
11054 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 11055 | { |
0d5ed153 | 11056 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 11057 | struct remote_state *rs; |
bba74b36 | 11058 | char *p, *endbuf; |
dd61ec5c | 11059 | char *message; |
3c3bea1c | 11060 | |
ff52c073 | 11061 | if (m_features.packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 11062 | return -1; |
2bc416ba | 11063 | |
28439a30 PA |
11064 | /* Make sure the remote is pointing at the right process, if |
11065 | necessary. */ | |
99d9c3b9 | 11066 | if (!gdbarch_has_global_breakpoints (current_inferior ()->arch ())) |
28439a30 PA |
11067 | set_general_process (); |
11068 | ||
4fff2411 | 11069 | rs = get_remote_state (); |
8d64371b TT |
11070 | p = rs->buf.data (); |
11071 | endbuf = p + get_remote_packet_size (); | |
4fff2411 | 11072 | |
96baa820 JM |
11073 | *(p++) = 'Z'; |
11074 | *(p++) = '1'; | |
11075 | *(p++) = ','; | |
802188a7 | 11076 | |
0d5ed153 | 11077 | addr = remote_address_masked (addr); |
96baa820 | 11078 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 11079 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 11080 | |
f6ac5f3d | 11081 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 11082 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 11083 | |
f6ac5f3d | 11084 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
11085 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
11086 | ||
6d820c5c | 11087 | putpkt (rs->buf); |
aa7b36b8 | 11088 | getpkt (&rs->buf); |
96baa820 | 11089 | |
ff52c073 | 11090 | switch (m_features.packet_ok (rs->buf, PACKET_Z1)) |
d471ea57 AC |
11091 | { |
11092 | case PACKET_ERROR: | |
dd61ec5c | 11093 | if (rs->buf[1] == '.') |
dda83cd7 SM |
11094 | { |
11095 | message = strchr (&rs->buf[2], '.'); | |
11096 | if (message) | |
11097 | error (_("Remote failure reply: %s"), message + 1); | |
11098 | } | |
dd61ec5c | 11099 | return -1; |
d471ea57 AC |
11100 | case PACKET_UNKNOWN: |
11101 | return -1; | |
11102 | case PACKET_OK: | |
11103 | return 0; | |
11104 | } | |
f34652de | 11105 | internal_error (_("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
11106 | } |
11107 | ||
d471ea57 | 11108 | |
f6ac5f3d PA |
11109 | int |
11110 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
11111 | struct bp_target_info *bp_tgt) | |
96baa820 | 11112 | { |
8181d85f | 11113 | CORE_ADDR addr; |
d01949b6 | 11114 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
11115 | char *p = rs->buf.data (); |
11116 | char *endbuf = p + get_remote_packet_size (); | |
c8189ed1 | 11117 | |
ff52c073 | 11118 | if (m_features.packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 11119 | return -1; |
802188a7 | 11120 | |
28439a30 PA |
11121 | /* Make sure the remote is pointing at the right process, if |
11122 | necessary. */ | |
99d9c3b9 | 11123 | if (!gdbarch_has_global_breakpoints (current_inferior ()->arch ())) |
28439a30 PA |
11124 | set_general_process (); |
11125 | ||
96baa820 JM |
11126 | *(p++) = 'z'; |
11127 | *(p++) = '1'; | |
11128 | *(p++) = ','; | |
802188a7 | 11129 | |
8181d85f | 11130 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 11131 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 11132 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 11133 | |
6d820c5c | 11134 | putpkt (rs->buf); |
aa7b36b8 | 11135 | getpkt (&rs->buf); |
802188a7 | 11136 | |
ff52c073 | 11137 | switch (m_features.packet_ok (rs->buf, PACKET_Z1)) |
d471ea57 AC |
11138 | { |
11139 | case PACKET_ERROR: | |
11140 | case PACKET_UNKNOWN: | |
11141 | return -1; | |
11142 | case PACKET_OK: | |
11143 | return 0; | |
11144 | } | |
f34652de | 11145 | internal_error (_("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 11146 | } |
96baa820 | 11147 | |
4a5e7a5b PA |
11148 | /* Verify memory using the "qCRC:" request. */ |
11149 | ||
f6ac5f3d PA |
11150 | int |
11151 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
11152 | { |
11153 | struct remote_state *rs = get_remote_state (); | |
11154 | unsigned long host_crc, target_crc; | |
11155 | char *tmp; | |
11156 | ||
936d2992 PA |
11157 | /* It doesn't make sense to use qCRC if the remote target is |
11158 | connected but not running. */ | |
55f6301a | 11159 | if (target_has_execution () |
ff52c073 | 11160 | && m_features.packet_support (PACKET_qCRC) != PACKET_DISABLE) |
936d2992 PA |
11161 | { |
11162 | enum packet_result result; | |
28439a30 | 11163 | |
936d2992 PA |
11164 | /* Make sure the remote is pointing at the right process. */ |
11165 | set_general_process (); | |
4a5e7a5b | 11166 | |
936d2992 | 11167 | /* FIXME: assumes lma can fit into long. */ |
8d64371b | 11168 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qCRC:%lx,%lx", |
936d2992 PA |
11169 | (long) lma, (long) size); |
11170 | putpkt (rs->buf); | |
4a5e7a5b | 11171 | |
936d2992 PA |
11172 | /* Be clever; compute the host_crc before waiting for target |
11173 | reply. */ | |
11174 | host_crc = xcrc32 (data, size, 0xffffffff); | |
11175 | ||
aa7b36b8 | 11176 | getpkt (&rs->buf); |
4a5e7a5b | 11177 | |
ff52c073 | 11178 | result = m_features.packet_ok (rs->buf, PACKET_qCRC); |
936d2992 PA |
11179 | if (result == PACKET_ERROR) |
11180 | return -1; | |
11181 | else if (result == PACKET_OK) | |
11182 | { | |
11183 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
11184 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 11185 | |
936d2992 PA |
11186 | return (host_crc == target_crc); |
11187 | } | |
11188 | } | |
4a5e7a5b | 11189 | |
f6ac5f3d | 11190 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
11191 | } |
11192 | ||
c906108c SS |
11193 | /* compare-sections command |
11194 | ||
11195 | With no arguments, compares each loadable section in the exec bfd | |
11196 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 11197 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 11198 | |
c906108c | 11199 | static void |
ac88e2de | 11200 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
11201 | { |
11202 | asection *s; | |
ce359b09 | 11203 | const char *sectname; |
c906108c SS |
11204 | bfd_size_type size; |
11205 | bfd_vma lma; | |
11206 | int matched = 0; | |
11207 | int mismatched = 0; | |
4a5e7a5b | 11208 | int res; |
95cf3b38 | 11209 | int read_only = 0; |
c906108c | 11210 | |
7e10abd1 | 11211 | if (!current_program_space->exec_bfd ()) |
8a3fe4f8 | 11212 | error (_("command cannot be used without an exec file")); |
c906108c | 11213 | |
95cf3b38 DT |
11214 | if (args != NULL && strcmp (args, "-r") == 0) |
11215 | { | |
11216 | read_only = 1; | |
11217 | args = NULL; | |
11218 | } | |
11219 | ||
7e10abd1 | 11220 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
c906108c SS |
11221 | { |
11222 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 11223 | continue; /* Skip non-loadable section. */ |
c906108c | 11224 | |
95cf3b38 DT |
11225 | if (read_only && (s->flags & SEC_READONLY) == 0) |
11226 | continue; /* Skip writeable sections */ | |
11227 | ||
fd361982 | 11228 | size = bfd_section_size (s); |
c906108c | 11229 | if (size == 0) |
0df8b418 | 11230 | continue; /* Skip zero-length section. */ |
c906108c | 11231 | |
fd361982 | 11232 | sectname = bfd_section_name (s); |
c906108c | 11233 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 11234 | continue; /* Not the section selected by user. */ |
c906108c | 11235 | |
0df8b418 | 11236 | matched = 1; /* Do this section. */ |
c906108c | 11237 | lma = s->lma; |
c906108c | 11238 | |
b80406ac | 11239 | gdb::byte_vector sectdata (size); |
7e10abd1 TT |
11240 | bfd_get_section_contents (current_program_space->exec_bfd (), s, |
11241 | sectdata.data (), 0, size); | |
c906108c | 11242 | |
b80406ac | 11243 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
11244 | |
11245 | if (res == -1) | |
5af949e3 | 11246 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
99d9c3b9 SM |
11247 | paddress (current_inferior ()->arch (), lma), |
11248 | paddress (current_inferior ()->arch (), lma + size)); | |
c906108c | 11249 | |
6cb06a8c | 11250 | gdb_printf ("Section %s, range %s -- %s: ", sectname, |
99d9c3b9 SM |
11251 | paddress (current_inferior ()->arch (), lma), |
11252 | paddress (current_inferior ()->arch (), lma + size)); | |
4a5e7a5b | 11253 | if (res) |
6cb06a8c | 11254 | gdb_printf ("matched.\n"); |
c906108c | 11255 | else |
c5aa993b | 11256 | { |
6cb06a8c | 11257 | gdb_printf ("MIS-MATCHED!\n"); |
c5aa993b JM |
11258 | mismatched++; |
11259 | } | |
c906108c SS |
11260 | } |
11261 | if (mismatched > 0) | |
131287d9 AB |
11262 | warning (_("One or more sections of the target image does " |
11263 | "not match the loaded file")); | |
c906108c | 11264 | if (args && !matched) |
6cb06a8c | 11265 | gdb_printf (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
11266 | } |
11267 | ||
0e7f50da UW |
11268 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
11269 | into remote target. The number of bytes written to the remote | |
11270 | target is returned, or -1 for error. */ | |
11271 | ||
6b8edb51 PA |
11272 | target_xfer_status |
11273 | remote_target::remote_write_qxfer (const char *object_name, | |
11274 | const char *annex, const gdb_byte *writebuf, | |
11275 | ULONGEST offset, LONGEST len, | |
11276 | ULONGEST *xfered_len, | |
ff52c073 | 11277 | const unsigned int which_packet) |
0e7f50da UW |
11278 | { |
11279 | int i, buf_len; | |
11280 | ULONGEST n; | |
0e7f50da | 11281 | struct remote_state *rs = get_remote_state (); |
7a78108a | 11282 | int max_size = get_memory_write_packet_size (); |
0e7f50da | 11283 | |
ff52c073 | 11284 | if (m_features.packet_support (which_packet) == PACKET_DISABLE) |
2ed4b548 | 11285 | return TARGET_XFER_E_IO; |
0e7f50da UW |
11286 | |
11287 | /* Insert header. */ | |
7a78108a | 11288 | i = snprintf (rs->buf.data (), max_size, |
0e7f50da UW |
11289 | "qXfer:%s:write:%s:%s:", |
11290 | object_name, annex ? annex : "", | |
11291 | phex_nz (offset, sizeof offset)); | |
11292 | max_size -= (i + 1); | |
11293 | ||
11294 | /* Escape as much data as fits into rs->buf. */ | |
7a78108a | 11295 | buf_len = remote_escape_output |
8d64371b | 11296 | (writebuf, len, 1, (gdb_byte *) rs->buf.data () + i, &max_size, max_size); |
0e7f50da | 11297 | |
8d64371b | 11298 | if (putpkt_binary (rs->buf.data (), i + buf_len) < 0 |
aa7b36b8 | 11299 | || getpkt (&rs->buf) < 0 |
ff52c073 | 11300 | || m_features.packet_ok (rs->buf, which_packet) != PACKET_OK) |
2ed4b548 | 11301 | return TARGET_XFER_E_IO; |
0e7f50da | 11302 | |
8d64371b | 11303 | unpack_varlen_hex (rs->buf.data (), &n); |
9b409511 YQ |
11304 | |
11305 | *xfered_len = n; | |
92ffd475 | 11306 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
11307 | } |
11308 | ||
0876f84a DJ |
11309 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
11310 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
11311 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
11312 | The number of bytes read may be less than LEN without indicating an | |
11313 | EOF. PACKET is checked and updated to indicate whether the remote | |
11314 | target supports this object. */ | |
11315 | ||
6b8edb51 PA |
11316 | target_xfer_status |
11317 | remote_target::remote_read_qxfer (const char *object_name, | |
11318 | const char *annex, | |
11319 | gdb_byte *readbuf, ULONGEST offset, | |
11320 | LONGEST len, | |
11321 | ULONGEST *xfered_len, | |
ff52c073 | 11322 | const unsigned int which_packet) |
0876f84a | 11323 | { |
0876f84a | 11324 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
11325 | LONGEST i, n, packet_len; |
11326 | ||
ff52c073 | 11327 | if (m_features.packet_support (which_packet) == PACKET_DISABLE) |
2ed4b548 | 11328 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11329 | |
11330 | /* Check whether we've cached an end-of-object packet that matches | |
11331 | this request. */ | |
8e88304f | 11332 | if (rs->finished_object) |
0876f84a | 11333 | { |
8e88304f TT |
11334 | if (strcmp (object_name, rs->finished_object) == 0 |
11335 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
11336 | && offset == rs->finished_offset) | |
9b409511 YQ |
11337 | return TARGET_XFER_EOF; |
11338 | ||
0876f84a DJ |
11339 | |
11340 | /* Otherwise, we're now reading something different. Discard | |
11341 | the cache. */ | |
8e88304f TT |
11342 | xfree (rs->finished_object); |
11343 | xfree (rs->finished_annex); | |
11344 | rs->finished_object = NULL; | |
11345 | rs->finished_annex = NULL; | |
0876f84a DJ |
11346 | } |
11347 | ||
11348 | /* Request only enough to fit in a single packet. The actual data | |
11349 | may not, since we don't know how much of it will need to be escaped; | |
11350 | the target is free to respond with slightly less data. We subtract | |
11351 | five to account for the response type and the protocol frame. */ | |
768adc05 | 11352 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
8d64371b TT |
11353 | snprintf (rs->buf.data (), get_remote_packet_size () - 4, |
11354 | "qXfer:%s:read:%s:%s,%s", | |
0876f84a DJ |
11355 | object_name, annex ? annex : "", |
11356 | phex_nz (offset, sizeof offset), | |
11357 | phex_nz (n, sizeof n)); | |
11358 | i = putpkt (rs->buf); | |
11359 | if (i < 0) | |
2ed4b548 | 11360 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11361 | |
11362 | rs->buf[0] = '\0'; | |
aa7b36b8 | 11363 | packet_len = getpkt (&rs->buf); |
ff52c073 CS |
11364 | if (packet_len < 0 |
11365 | || m_features.packet_ok (rs->buf, which_packet) != PACKET_OK) | |
2ed4b548 | 11366 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11367 | |
11368 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8d64371b | 11369 | error (_("Unknown remote qXfer reply: %s"), rs->buf.data ()); |
0876f84a DJ |
11370 | |
11371 | /* 'm' means there is (or at least might be) more data after this | |
11372 | batch. That does not make sense unless there's at least one byte | |
11373 | of data in this reply. */ | |
11374 | if (rs->buf[0] == 'm' && packet_len == 1) | |
11375 | error (_("Remote qXfer reply contained no data.")); | |
11376 | ||
11377 | /* Got some data. */ | |
8d64371b | 11378 | i = remote_unescape_input ((gdb_byte *) rs->buf.data () + 1, |
bc20a4af | 11379 | packet_len - 1, readbuf, n); |
0876f84a DJ |
11380 | |
11381 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
11382 | or possibly empty. If we have the final block of a non-empty |
11383 | object, record this fact to bypass a subsequent partial read. */ | |
11384 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 11385 | { |
8e88304f TT |
11386 | rs->finished_object = xstrdup (object_name); |
11387 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
11388 | rs->finished_offset = offset + i; | |
0876f84a DJ |
11389 | } |
11390 | ||
9b409511 YQ |
11391 | if (i == 0) |
11392 | return TARGET_XFER_EOF; | |
11393 | else | |
11394 | { | |
11395 | *xfered_len = i; | |
11396 | return TARGET_XFER_OK; | |
11397 | } | |
0876f84a DJ |
11398 | } |
11399 | ||
f6ac5f3d PA |
11400 | enum target_xfer_status |
11401 | remote_target::xfer_partial (enum target_object object, | |
11402 | const char *annex, gdb_byte *readbuf, | |
11403 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
11404 | ULONGEST *xfered_len) | |
c906108c | 11405 | { |
82f73884 | 11406 | struct remote_state *rs; |
c906108c | 11407 | int i; |
6d820c5c | 11408 | char *p2; |
1e3ff5ad | 11409 | char query_type; |
99d9c3b9 SM |
11410 | int unit_size |
11411 | = gdbarch_addressable_memory_unit_size (current_inferior ()->arch ()); | |
c906108c | 11412 | |
e6e4e701 | 11413 | set_remote_traceframe (); |
82f73884 PA |
11414 | set_general_thread (inferior_ptid); |
11415 | ||
11416 | rs = get_remote_state (); | |
11417 | ||
b2182ed2 | 11418 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
11419 | if (object == TARGET_OBJECT_MEMORY) |
11420 | { | |
2d717e4f DJ |
11421 | /* If the remote target is connected but not running, we should |
11422 | pass this request down to a lower stratum (e.g. the executable | |
11423 | file). */ | |
55f6301a | 11424 | if (!target_has_execution ()) |
9b409511 | 11425 | return TARGET_XFER_EOF; |
2d717e4f | 11426 | |
21e3b9b9 | 11427 | if (writebuf != NULL) |
124e13d9 SM |
11428 | return remote_write_bytes (offset, writebuf, len, unit_size, |
11429 | xfered_len); | |
21e3b9b9 | 11430 | else |
6b8edb51 | 11431 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 11432 | xfered_len); |
21e3b9b9 DJ |
11433 | } |
11434 | ||
4aa995e1 PA |
11435 | /* Handle extra signal info using qxfer packets. */ |
11436 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
11437 | { | |
11438 | if (readbuf) | |
f6ac5f3d | 11439 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
ff52c073 | 11440 | xfered_len, PACKET_qXfer_siginfo_read); |
4aa995e1 | 11441 | else |
ff52c073 CS |
11442 | return remote_write_qxfer ("siginfo", annex, writebuf, offset, len, |
11443 | xfered_len, PACKET_qXfer_siginfo_write); | |
4aa995e1 PA |
11444 | } |
11445 | ||
0fb4aa4b PA |
11446 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
11447 | { | |
11448 | if (readbuf) | |
f6ac5f3d | 11449 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 11450 | readbuf, offset, len, xfered_len, |
ff52c073 | 11451 | PACKET_qXfer_statictrace_read); |
0fb4aa4b | 11452 | else |
2ed4b548 | 11453 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
11454 | } |
11455 | ||
a76d924d DJ |
11456 | /* Only handle flash writes. */ |
11457 | if (writebuf != NULL) | |
11458 | { | |
a76d924d DJ |
11459 | switch (object) |
11460 | { | |
11461 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 11462 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 11463 | writebuf); |
a76d924d DJ |
11464 | |
11465 | default: | |
2ed4b548 | 11466 | return TARGET_XFER_E_IO; |
a76d924d DJ |
11467 | } |
11468 | } | |
4b8a223f | 11469 | |
1e3ff5ad AC |
11470 | /* Map pre-existing objects onto letters. DO NOT do this for new |
11471 | objects!!! Instead specify new query packets. */ | |
11472 | switch (object) | |
c906108c | 11473 | { |
1e3ff5ad AC |
11474 | case TARGET_OBJECT_AVR: |
11475 | query_type = 'R'; | |
11476 | break; | |
802188a7 RM |
11477 | |
11478 | case TARGET_OBJECT_AUXV: | |
0876f84a | 11479 | gdb_assert (annex == NULL); |
ff52c073 CS |
11480 | return remote_read_qxfer |
11481 | ("auxv", annex, readbuf, offset, len, xfered_len, PACKET_qXfer_auxv); | |
802188a7 | 11482 | |
23181151 DJ |
11483 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
11484 | return remote_read_qxfer | |
f6ac5f3d | 11485 | ("features", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11486 | PACKET_qXfer_features); |
23181151 | 11487 | |
cfa9d6d9 DJ |
11488 | case TARGET_OBJECT_LIBRARIES: |
11489 | return remote_read_qxfer | |
f6ac5f3d | 11490 | ("libraries", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11491 | PACKET_qXfer_libraries); |
cfa9d6d9 | 11492 | |
2268b414 JK |
11493 | case TARGET_OBJECT_LIBRARIES_SVR4: |
11494 | return remote_read_qxfer | |
f6ac5f3d | 11495 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11496 | PACKET_qXfer_libraries_svr4); |
2268b414 | 11497 | |
fd79ecee DJ |
11498 | case TARGET_OBJECT_MEMORY_MAP: |
11499 | gdb_assert (annex == NULL); | |
ff52c073 CS |
11500 | return remote_read_qxfer |
11501 | ("memory-map", annex, readbuf, offset, len, xfered_len, | |
11502 | PACKET_qXfer_memory_map); | |
fd79ecee | 11503 | |
07e059b5 VP |
11504 | case TARGET_OBJECT_OSDATA: |
11505 | /* Should only get here if we're connected. */ | |
5d93a237 | 11506 | gdb_assert (rs->remote_desc); |
07e059b5 | 11507 | return remote_read_qxfer |
f6ac5f3d | 11508 | ("osdata", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11509 | PACKET_qXfer_osdata); |
07e059b5 | 11510 | |
dc146f7c VP |
11511 | case TARGET_OBJECT_THREADS: |
11512 | gdb_assert (annex == NULL); | |
ff52c073 CS |
11513 | return remote_read_qxfer |
11514 | ("threads", annex, readbuf, offset, len, xfered_len, | |
11515 | PACKET_qXfer_threads); | |
dc146f7c | 11516 | |
b3b9301e PA |
11517 | case TARGET_OBJECT_TRACEFRAME_INFO: |
11518 | gdb_assert (annex == NULL); | |
11519 | return remote_read_qxfer | |
f6ac5f3d | 11520 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11521 | PACKET_qXfer_traceframe_info); |
78d85199 YQ |
11522 | |
11523 | case TARGET_OBJECT_FDPIC: | |
ff52c073 CS |
11524 | return remote_read_qxfer |
11525 | ("fdpic", annex, readbuf, offset, len, xfered_len, PACKET_qXfer_fdpic); | |
169081d0 TG |
11526 | |
11527 | case TARGET_OBJECT_OPENVMS_UIB: | |
ff52c073 CS |
11528 | return remote_read_qxfer |
11529 | ("uib", annex, readbuf, offset, len, xfered_len, PACKET_qXfer_uib); | |
169081d0 | 11530 | |
9accd112 | 11531 | case TARGET_OBJECT_BTRACE: |
ff52c073 CS |
11532 | return remote_read_qxfer |
11533 | ("btrace", annex, readbuf, offset, len, xfered_len, | |
11534 | PACKET_qXfer_btrace); | |
9accd112 | 11535 | |
f4abbc16 | 11536 | case TARGET_OBJECT_BTRACE_CONF: |
ff52c073 CS |
11537 | return remote_read_qxfer |
11538 | ("btrace-conf", annex, readbuf, offset, len, xfered_len, | |
11539 | PACKET_qXfer_btrace_conf); | |
f4abbc16 | 11540 | |
c78fa86a | 11541 | case TARGET_OBJECT_EXEC_FILE: |
ff52c073 CS |
11542 | return remote_read_qxfer |
11543 | ("exec-file", annex, readbuf, offset, len, xfered_len, | |
11544 | PACKET_qXfer_exec_file); | |
c78fa86a | 11545 | |
1e3ff5ad | 11546 | default: |
2ed4b548 | 11547 | return TARGET_XFER_E_IO; |
c906108c SS |
11548 | } |
11549 | ||
0df8b418 | 11550 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 11551 | large enough let the caller deal with it. */ |
ea9c271d | 11552 | if (len < get_remote_packet_size ()) |
2ed4b548 | 11553 | return TARGET_XFER_E_IO; |
ea9c271d | 11554 | len = get_remote_packet_size (); |
1e3ff5ad | 11555 | |
23860348 | 11556 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 11557 | if (!rs->remote_desc) |
8a3fe4f8 | 11558 | error (_("remote query is only available after target open")); |
c906108c | 11559 | |
1e3ff5ad | 11560 | gdb_assert (annex != NULL); |
4b8a223f | 11561 | gdb_assert (readbuf != NULL); |
c906108c | 11562 | |
8d64371b | 11563 | p2 = rs->buf.data (); |
c906108c SS |
11564 | *p2++ = 'q'; |
11565 | *p2++ = query_type; | |
11566 | ||
23860348 MS |
11567 | /* We used one buffer char for the remote protocol q command and |
11568 | another for the query type. As the remote protocol encapsulation | |
11569 | uses 4 chars plus one extra in case we are debugging | |
11570 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
11571 | string. */ | |
c906108c | 11572 | i = 0; |
ea9c271d | 11573 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11574 | { |
1e3ff5ad AC |
11575 | /* Bad caller may have sent forbidden characters. */ |
11576 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11577 | *p2++ = annex[i]; | |
c906108c SS |
11578 | i++; |
11579 | } | |
1e3ff5ad AC |
11580 | *p2 = '\0'; |
11581 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11582 | |
6d820c5c | 11583 | i = putpkt (rs->buf); |
c5aa993b | 11584 | if (i < 0) |
2ed4b548 | 11585 | return TARGET_XFER_E_IO; |
c906108c | 11586 | |
aa7b36b8 | 11587 | getpkt (&rs->buf); |
8d64371b | 11588 | strcpy ((char *) readbuf, rs->buf.data ()); |
c906108c | 11589 | |
9b409511 | 11590 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11591 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11592 | } |
11593 | ||
09c98b44 DB |
11594 | /* Implementation of to_get_memory_xfer_limit. */ |
11595 | ||
f6ac5f3d PA |
11596 | ULONGEST |
11597 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11598 | { |
11599 | return get_memory_write_packet_size (); | |
11600 | } | |
11601 | ||
f6ac5f3d PA |
11602 | int |
11603 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11604 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11605 | CORE_ADDR *found_addrp) | |
08388c79 | 11606 | { |
99d9c3b9 | 11607 | int addr_size = gdbarch_addr_bit (current_inferior ()->arch ()) / 8; |
08388c79 DE |
11608 | struct remote_state *rs = get_remote_state (); |
11609 | int max_size = get_memory_write_packet_size (); | |
ff52c073 | 11610 | |
0df8b418 MS |
11611 | /* Number of packet bytes used to encode the pattern; |
11612 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11613 | int escaped_pattern_len; |
0df8b418 | 11614 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11615 | int used_pattern_len; |
11616 | int i; | |
11617 | int found; | |
11618 | ULONGEST found_addr; | |
11619 | ||
5bd5fecd | 11620 | auto read_memory = [this] (CORE_ADDR addr, gdb_byte *result, size_t len) |
4a72de73 TT |
11621 | { |
11622 | return (target_read (this, TARGET_OBJECT_MEMORY, NULL, result, addr, len) | |
11623 | == len); | |
11624 | }; | |
11625 | ||
7cc244de | 11626 | /* Don't go to the target if we don't have to. This is done before |
ff52c073 CS |
11627 | checking packet_support to avoid the possibility that a success for this |
11628 | edge case means the facility works in general. */ | |
08388c79 DE |
11629 | if (pattern_len > search_space_len) |
11630 | return 0; | |
11631 | if (pattern_len == 0) | |
11632 | { | |
11633 | *found_addrp = start_addr; | |
11634 | return 1; | |
11635 | } | |
11636 | ||
11637 | /* If we already know the packet isn't supported, fall back to the simple | |
11638 | way of searching memory. */ | |
11639 | ||
ff52c073 | 11640 | if (m_features.packet_support (PACKET_qSearch_memory) == PACKET_DISABLE) |
08388c79 DE |
11641 | { |
11642 | /* Target doesn't provided special support, fall back and use the | |
11643 | standard support (copy memory and do the search here). */ | |
4a72de73 | 11644 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11645 | pattern, pattern_len, found_addrp); |
11646 | } | |
11647 | ||
28439a30 PA |
11648 | /* Make sure the remote is pointing at the right process. */ |
11649 | set_general_process (); | |
11650 | ||
08388c79 | 11651 | /* Insert header. */ |
7a78108a | 11652 | i = snprintf (rs->buf.data (), max_size, |
08388c79 | 11653 | "qSearch:memory:%s;%s;", |
5af949e3 | 11654 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11655 | phex_nz (search_space_len, sizeof (search_space_len))); |
11656 | max_size -= (i + 1); | |
11657 | ||
11658 | /* Escape as much data as fits into rs->buf. */ | |
11659 | escaped_pattern_len = | |
8d64371b TT |
11660 | remote_escape_output (pattern, pattern_len, 1, |
11661 | (gdb_byte *) rs->buf.data () + i, | |
08388c79 DE |
11662 | &used_pattern_len, max_size); |
11663 | ||
11664 | /* Bail if the pattern is too large. */ | |
11665 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11666 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 | 11667 | |
8d64371b | 11668 | if (putpkt_binary (rs->buf.data (), i + escaped_pattern_len) < 0 |
aa7b36b8 | 11669 | || getpkt (&rs->buf) < 0 |
ff52c073 | 11670 | || m_features.packet_ok (rs->buf, PACKET_qSearch_memory) != PACKET_OK) |
08388c79 DE |
11671 | { |
11672 | /* The request may not have worked because the command is not | |
11673 | supported. If so, fall back to the simple way. */ | |
ff52c073 | 11674 | if (m_features.packet_support (PACKET_qSearch_memory) == PACKET_DISABLE) |
08388c79 | 11675 | { |
4a72de73 | 11676 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11677 | pattern, pattern_len, found_addrp); |
11678 | } | |
11679 | return -1; | |
11680 | } | |
11681 | ||
11682 | if (rs->buf[0] == '0') | |
11683 | found = 0; | |
11684 | else if (rs->buf[0] == '1') | |
11685 | { | |
11686 | found = 1; | |
11687 | if (rs->buf[1] != ',') | |
8d64371b TT |
11688 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
11689 | unpack_varlen_hex (&rs->buf[2], &found_addr); | |
08388c79 DE |
11690 | *found_addrp = found_addr; |
11691 | } | |
11692 | else | |
8d64371b | 11693 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
08388c79 DE |
11694 | |
11695 | return found; | |
11696 | } | |
11697 | ||
f6ac5f3d PA |
11698 | void |
11699 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11700 | { |
d01949b6 | 11701 | struct remote_state *rs = get_remote_state (); |
8d64371b | 11702 | char *p = rs->buf.data (); |
96baa820 | 11703 | |
5d93a237 | 11704 | if (!rs->remote_desc) |
8a3fe4f8 | 11705 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11706 | |
23860348 | 11707 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11708 | if (command == NULL) |
11709 | command = ""; | |
11710 | ||
23860348 | 11711 | /* The query prefix. */ |
8d64371b TT |
11712 | strcpy (rs->buf.data (), "qRcmd,"); |
11713 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 | 11714 | |
8d64371b | 11715 | if ((strlen (rs->buf.data ()) + strlen (command) * 2 + 8/*misc*/) |
3e43a32a | 11716 | > get_remote_packet_size ()) |
8a3fe4f8 | 11717 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11718 | |
23860348 | 11719 | /* Encode the actual command. */ |
a30bf1f1 | 11720 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11721 | |
6d820c5c | 11722 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11723 | error (_("Communication problem with target.")); |
96baa820 JM |
11724 | |
11725 | /* get/display the response */ | |
11726 | while (1) | |
11727 | { | |
2e9f7625 DJ |
11728 | char *buf; |
11729 | ||
00bf0b85 | 11730 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11731 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11732 | rs->buf[0] = '\0'; |
aa7b36b8 | 11733 | if (getpkt (&rs->buf) == -1) |
7a78108a | 11734 | { |
dda83cd7 SM |
11735 | /* Timeout. Continue to (try to) read responses. |
11736 | This is better than stopping with an error, assuming the stub | |
11737 | is still executing the (long) monitor command. | |
11738 | If needed, the user can interrupt gdb using C-c, obtaining | |
11739 | an effect similar to stop on timeout. */ | |
11740 | continue; | |
11741 | } | |
8d64371b | 11742 | buf = rs->buf.data (); |
96baa820 | 11743 | if (buf[0] == '\0') |
8a3fe4f8 | 11744 | error (_("Target does not support this command.")); |
96baa820 JM |
11745 | if (buf[0] == 'O' && buf[1] != 'K') |
11746 | { | |
23860348 | 11747 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11748 | continue; |
11749 | } | |
11750 | if (strcmp (buf, "OK") == 0) | |
11751 | break; | |
7be570e7 | 11752 | if (strlen (buf) == 3 && buf[0] == 'E' |
d5ce6f2d | 11753 | && isxdigit (buf[1]) && isxdigit (buf[2])) |
7be570e7 | 11754 | { |
8a3fe4f8 | 11755 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11756 | } |
96baa820 JM |
11757 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11758 | { | |
11759 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11760 | |
a11ac3b3 | 11761 | gdb_putc (c, outbuf); |
96baa820 JM |
11762 | } |
11763 | break; | |
11764 | } | |
11765 | } | |
11766 | ||
f6ac5f3d PA |
11767 | std::vector<mem_region> |
11768 | remote_target::memory_map () | |
fd79ecee | 11769 | { |
a664f67e | 11770 | std::vector<mem_region> result; |
9018be22 | 11771 | gdb::optional<gdb::char_vector> text |
328d42d8 SM |
11772 | = target_read_stralloc (current_inferior ()->top_target (), |
11773 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
fd79ecee DJ |
11774 | |
11775 | if (text) | |
9018be22 | 11776 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11777 | |
11778 | return result; | |
11779 | } | |
11780 | ||
e5b176f2 AB |
11781 | /* Set of callbacks used to implement the 'maint packet' command. */ |
11782 | ||
11783 | struct cli_packet_command_callbacks : public send_remote_packet_callbacks | |
c906108c | 11784 | { |
e5b176f2 AB |
11785 | /* Called before the packet is sent. BUF is the packet content before |
11786 | the protocol specific prefix, suffix, and escaping is added. */ | |
c906108c | 11787 | |
e5b176f2 AB |
11788 | void sending (gdb::array_view<const char> &buf) override |
11789 | { | |
0426ad51 | 11790 | gdb_puts ("sending: "); |
e5b176f2 | 11791 | print_packet (buf); |
0426ad51 | 11792 | gdb_puts ("\n"); |
e5b176f2 | 11793 | } |
c906108c | 11794 | |
e5b176f2 AB |
11795 | /* Called with BUF, the reply from the remote target. */ |
11796 | ||
11797 | void received (gdb::array_view<const char> &buf) override | |
11798 | { | |
0426ad51 | 11799 | gdb_puts ("received: \""); |
e5b176f2 | 11800 | print_packet (buf); |
0426ad51 | 11801 | gdb_puts ("\"\n"); |
e5b176f2 AB |
11802 | } |
11803 | ||
11804 | private: | |
11805 | ||
11806 | /* Print BUF o gdb_stdout. Any non-printable bytes in BUF are printed as | |
11807 | '\x??' with '??' replaced by the hexadecimal value of the byte. */ | |
11808 | ||
11809 | static void | |
11810 | print_packet (gdb::array_view<const char> &buf) | |
11811 | { | |
11812 | string_file stb; | |
11813 | ||
11814 | for (int i = 0; i < buf.size (); ++i) | |
11815 | { | |
11816 | gdb_byte c = buf[i]; | |
11817 | if (isprint (c)) | |
a11ac3b3 | 11818 | gdb_putc (c, &stb); |
e5b176f2 | 11819 | else |
6cb06a8c | 11820 | gdb_printf (&stb, "\\x%02x", (unsigned char) c); |
e5b176f2 AB |
11821 | } |
11822 | ||
0426ad51 | 11823 | gdb_puts (stb.string ().c_str ()); |
e5b176f2 AB |
11824 | } |
11825 | }; | |
11826 | ||
11827 | /* See remote.h. */ | |
6b8edb51 PA |
11828 | |
11829 | void | |
e5b176f2 AB |
11830 | send_remote_packet (gdb::array_view<const char> &buf, |
11831 | send_remote_packet_callbacks *callbacks) | |
6b8edb51 | 11832 | { |
e5b176f2 AB |
11833 | if (buf.size () == 0 || buf.data ()[0] == '\0') |
11834 | error (_("a remote packet must not be empty")); | |
c906108c | 11835 | |
e5b176f2 AB |
11836 | remote_target *remote = get_current_remote_target (); |
11837 | if (remote == nullptr) | |
11838 | error (_("packets can only be sent to a remote target")); | |
c906108c | 11839 | |
e5b176f2 | 11840 | callbacks->sending (buf); |
6b8edb51 | 11841 | |
e5b176f2 AB |
11842 | remote->putpkt_binary (buf.data (), buf.size ()); |
11843 | remote_state *rs = remote->get_remote_state (); | |
aa7b36b8 | 11844 | int bytes = remote->getpkt (&rs->buf); |
e5b176f2 AB |
11845 | |
11846 | if (bytes < 0) | |
11847 | error (_("error while fetching packet from remote target")); | |
11848 | ||
11849 | gdb::array_view<const char> view (&rs->buf[0], bytes); | |
11850 | callbacks->received (view); | |
11851 | } | |
11852 | ||
11853 | /* Entry point for the 'maint packet' command. */ | |
11854 | ||
11855 | static void | |
11856 | cli_packet_command (const char *args, int from_tty) | |
11857 | { | |
11858 | cli_packet_command_callbacks cb; | |
11859 | gdb::array_view<const char> view | |
11860 | = gdb::make_array_view (args, args == nullptr ? 0 : strlen (args)); | |
11861 | send_remote_packet (view, &cb); | |
c906108c SS |
11862 | } |
11863 | ||
11864 | #if 0 | |
23860348 | 11865 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11866 | |
a14ed312 | 11867 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11868 | |
a14ed312 | 11869 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11870 | |
a14ed312 | 11871 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11872 | |
a14ed312 | 11873 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11874 | |
23860348 | 11875 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11876 | |
a14ed312 | 11877 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11878 | |
23860348 | 11879 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11880 | |
a14ed312 | 11881 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11882 | |
a14ed312 | 11883 | static void init_remote_threadtests (void); |
c906108c | 11884 | |
23860348 | 11885 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11886 | |
11887 | static void | |
0b39b52e | 11888 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11889 | { |
11890 | int sample_thread = SAMPLE_THREAD; | |
11891 | ||
6cb06a8c | 11892 | gdb_printf (_("Remote threadset test\n")); |
79d7f229 | 11893 | set_general_thread (sample_thread); |
c906108c SS |
11894 | } |
11895 | ||
11896 | ||
11897 | static void | |
0b39b52e | 11898 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11899 | { |
11900 | int sample_thread = SAMPLE_THREAD; | |
e99b03dc | 11901 | int pid = inferior_ptid.pid (); |
fd79271b | 11902 | ptid_t ptid = ptid_t (pid, sample_thread, 0); |
c906108c | 11903 | |
79d7f229 | 11904 | if (remote_thread_alive (ptid)) |
6cb06a8c | 11905 | gdb_printf ("PASS: Thread alive test\n"); |
c906108c | 11906 | else |
6cb06a8c | 11907 | gdb_printf ("FAIL: Thread alive test\n"); |
c906108c SS |
11908 | } |
11909 | ||
23860348 | 11910 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11911 | |
11912 | void | |
fba45db2 | 11913 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11914 | { |
11915 | char hexid[20]; | |
11916 | ||
405feb71 | 11917 | pack_threadid (&hexid[0], ref); /* Convert thread id into hex. */ |
c906108c | 11918 | hexid[16] = 0; |
6cb06a8c | 11919 | gdb_printf ("%s %s\n", title, (&hexid[0])); |
c906108c SS |
11920 | } |
11921 | ||
11922 | static void | |
0b39b52e | 11923 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11924 | { |
11925 | int startflag = 1; | |
11926 | threadref nextthread; | |
11927 | int done, result_count; | |
11928 | threadref threadlist[3]; | |
11929 | ||
6cb06a8c | 11930 | gdb_printf ("Remote Threadlist test\n"); |
c906108c SS |
11931 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, |
11932 | &result_count, &threadlist[0])) | |
6cb06a8c | 11933 | gdb_printf ("FAIL: threadlist test\n"); |
c906108c SS |
11934 | else |
11935 | { | |
11936 | threadref *scan = threadlist; | |
11937 | threadref *limit = scan + result_count; | |
11938 | ||
11939 | while (scan < limit) | |
11940 | output_threadid (" thread ", scan++); | |
11941 | } | |
11942 | } | |
11943 | ||
11944 | void | |
fba45db2 | 11945 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11946 | { |
11947 | output_threadid ("Threadid: ", &info->threadid); | |
6cb06a8c TT |
11948 | gdb_printf ("Name: %s\n ", info->shortname); |
11949 | gdb_printf ("State: %s\n", info->display); | |
11950 | gdb_printf ("other: %s\n\n", info->more_display); | |
c906108c SS |
11951 | } |
11952 | ||
11953 | int | |
fba45db2 | 11954 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11955 | { |
11956 | int result; | |
11957 | int set; | |
11958 | struct gdb_ext_thread_info threadinfo; | |
11959 | ||
11960 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11961 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11962 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11963 | display_thread_info (&threadinfo); | |
11964 | return result; | |
11965 | } | |
11966 | ||
11967 | static void | |
0b39b52e | 11968 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11969 | { |
11970 | int athread = SAMPLE_THREAD; | |
11971 | threadref thread; | |
11972 | int set; | |
11973 | ||
11974 | int_to_threadref (&thread, athread); | |
6cb06a8c | 11975 | gdb_printf ("Remote Threadinfo test\n"); |
c906108c | 11976 | if (!get_and_display_threadinfo (&thread)) |
6cb06a8c | 11977 | gdb_printf ("FAIL cannot get thread info\n"); |
c906108c SS |
11978 | } |
11979 | ||
11980 | static int | |
fba45db2 | 11981 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11982 | { |
11983 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11984 | return get_and_display_threadinfo (ref); | |
11985 | } | |
11986 | ||
11987 | static void | |
0b39b52e | 11988 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c | 11989 | { |
6cb06a8c | 11990 | gdb_printf ("Remote Threadlist update test\n"); |
c906108c SS |
11991 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); |
11992 | } | |
11993 | ||
11994 | static void | |
11995 | init_remote_threadtests (void) | |
11996 | { | |
3e43a32a MS |
11997 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11998 | _("Fetch and print the remote list of " | |
590042fc | 11999 | "thread identifiers, one pkt only.")); |
c906108c | 12000 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
590042fc | 12001 | _("Fetch and display info about one thread.")); |
c906108c | 12002 | add_com ("tset", class_obscure, threadset_test_cmd, |
590042fc | 12003 | _("Test setting to a different thread.")); |
c906108c | 12004 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
590042fc | 12005 | _("Iterate through updating all remote thread info.")); |
c906108c | 12006 | add_com ("talive", class_obscure, threadalive_test, |
590042fc | 12007 | _("Remote thread alive test.")); |
c906108c SS |
12008 | } |
12009 | ||
12010 | #endif /* 0 */ | |
12011 | ||
a068643d | 12012 | /* Convert a thread ID to a string. */ |
f3fb8c85 | 12013 | |
a068643d | 12014 | std::string |
f6ac5f3d | 12015 | remote_target::pid_to_str (ptid_t ptid) |
f3fb8c85 | 12016 | { |
d7e15655 | 12017 | if (ptid == null_ptid) |
7cee1e54 | 12018 | return normal_pid_to_str (ptid); |
0e998d96 | 12019 | else if (ptid.is_pid ()) |
ecd0ada5 PA |
12020 | { |
12021 | /* Printing an inferior target id. */ | |
12022 | ||
12023 | /* When multi-process extensions are off, there's no way in the | |
12024 | remote protocol to know the remote process id, if there's any | |
12025 | at all. There's one exception --- when we're connected with | |
12026 | target extended-remote, and we manually attached to a process | |
12027 | with "attach PID". We don't record anywhere a flag that | |
12028 | allows us to distinguish that case from the case of | |
12029 | connecting with extended-remote and the stub already being | |
12030 | attached to a process, and reporting yes to qAttached, hence | |
12031 | no smart special casing here. */ | |
ff52c073 | 12032 | if (!m_features.remote_multi_process_p ()) |
a068643d | 12033 | return "Remote target"; |
ecd0ada5 PA |
12034 | |
12035 | return normal_pid_to_str (ptid); | |
82f73884 | 12036 | } |
ecd0ada5 | 12037 | else |
79d7f229 | 12038 | { |
d7e15655 | 12039 | if (magic_null_ptid == ptid) |
a068643d | 12040 | return "Thread <main>"; |
ff52c073 | 12041 | else if (m_features.remote_multi_process_p ()) |
e38504b3 | 12042 | if (ptid.lwp () == 0) |
de0d863e DB |
12043 | return normal_pid_to_str (ptid); |
12044 | else | |
a068643d TT |
12045 | return string_printf ("Thread %d.%ld", |
12046 | ptid.pid (), ptid.lwp ()); | |
ecd0ada5 | 12047 | else |
a068643d | 12048 | return string_printf ("Thread %ld", ptid.lwp ()); |
79d7f229 | 12049 | } |
f3fb8c85 MS |
12050 | } |
12051 | ||
38691318 KB |
12052 | /* Get the address of the thread local variable in OBJFILE which is |
12053 | stored at OFFSET within the thread local storage for thread PTID. */ | |
12054 | ||
f6ac5f3d PA |
12055 | CORE_ADDR |
12056 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
12057 | CORE_ADDR offset) | |
38691318 | 12058 | { |
ff52c073 | 12059 | if (m_features.packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
12060 | { |
12061 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
12062 | char *p = rs->buf.data (); |
12063 | char *endp = p + get_remote_packet_size (); | |
571dd617 | 12064 | enum packet_result result; |
38691318 KB |
12065 | |
12066 | strcpy (p, "qGetTLSAddr:"); | |
12067 | p += strlen (p); | |
82f73884 | 12068 | p = write_ptid (p, endp, ptid); |
38691318 KB |
12069 | *p++ = ','; |
12070 | p += hexnumstr (p, offset); | |
12071 | *p++ = ','; | |
12072 | p += hexnumstr (p, lm); | |
12073 | *p++ = '\0'; | |
12074 | ||
6d820c5c | 12075 | putpkt (rs->buf); |
aa7b36b8 | 12076 | getpkt (&rs->buf); |
ff52c073 | 12077 | result = m_features.packet_ok (rs->buf, PACKET_qGetTLSAddr); |
571dd617 | 12078 | if (result == PACKET_OK) |
38691318 | 12079 | { |
b926417a | 12080 | ULONGEST addr; |
38691318 | 12081 | |
8d64371b | 12082 | unpack_varlen_hex (rs->buf.data (), &addr); |
b926417a | 12083 | return addr; |
38691318 | 12084 | } |
571dd617 | 12085 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
12086 | throw_error (TLS_GENERIC_ERROR, |
12087 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 12088 | else |
109c3e39 AC |
12089 | throw_error (TLS_GENERIC_ERROR, |
12090 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
12091 | } |
12092 | else | |
109c3e39 AC |
12093 | throw_error (TLS_GENERIC_ERROR, |
12094 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
12095 | /* Not reached. */ |
12096 | return 0; | |
12097 | } | |
12098 | ||
711e434b PM |
12099 | /* Provide thread local base, i.e. Thread Information Block address. |
12100 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
12101 | ||
57810aa7 | 12102 | bool |
f6ac5f3d | 12103 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 12104 | { |
ff52c073 | 12105 | if (m_features.packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
12106 | { |
12107 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
12108 | char *p = rs->buf.data (); |
12109 | char *endp = p + get_remote_packet_size (); | |
711e434b PM |
12110 | enum packet_result result; |
12111 | ||
12112 | strcpy (p, "qGetTIBAddr:"); | |
12113 | p += strlen (p); | |
12114 | p = write_ptid (p, endp, ptid); | |
12115 | *p++ = '\0'; | |
12116 | ||
12117 | putpkt (rs->buf); | |
aa7b36b8 | 12118 | getpkt (&rs->buf); |
ff52c073 | 12119 | result = m_features.packet_ok (rs->buf, PACKET_qGetTIBAddr); |
711e434b PM |
12120 | if (result == PACKET_OK) |
12121 | { | |
b926417a | 12122 | ULONGEST val; |
8d64371b | 12123 | unpack_varlen_hex (rs->buf.data (), &val); |
711e434b | 12124 | if (addr) |
b926417a | 12125 | *addr = (CORE_ADDR) val; |
57810aa7 | 12126 | return true; |
711e434b PM |
12127 | } |
12128 | else if (result == PACKET_UNKNOWN) | |
12129 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
12130 | else | |
12131 | error (_("Remote target failed to process qGetTIBAddr request")); | |
12132 | } | |
12133 | else | |
12134 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
12135 | /* Not reached. */ | |
57810aa7 | 12136 | return false; |
711e434b PM |
12137 | } |
12138 | ||
29709017 DJ |
12139 | /* Support for inferring a target description based on the current |
12140 | architecture and the size of a 'g' packet. While the 'g' packet | |
12141 | can have any size (since optional registers can be left off the | |
12142 | end), some sizes are easily recognizable given knowledge of the | |
12143 | approximate architecture. */ | |
12144 | ||
12145 | struct remote_g_packet_guess | |
12146 | { | |
eefce37f TT |
12147 | remote_g_packet_guess (int bytes_, const struct target_desc *tdesc_) |
12148 | : bytes (bytes_), | |
12149 | tdesc (tdesc_) | |
12150 | { | |
12151 | } | |
12152 | ||
29709017 DJ |
12153 | int bytes; |
12154 | const struct target_desc *tdesc; | |
12155 | }; | |
29709017 | 12156 | |
cb275538 | 12157 | struct remote_g_packet_data |
29709017 | 12158 | { |
eefce37f | 12159 | std::vector<remote_g_packet_guess> guesses; |
29709017 DJ |
12160 | }; |
12161 | ||
cb275538 TT |
12162 | static const registry<gdbarch>::key<struct remote_g_packet_data> |
12163 | remote_g_packet_data_handle; | |
29709017 | 12164 | |
cb275538 TT |
12165 | static struct remote_g_packet_data * |
12166 | get_g_packet_data (struct gdbarch *gdbarch) | |
29709017 | 12167 | { |
cb275538 TT |
12168 | struct remote_g_packet_data *data |
12169 | = remote_g_packet_data_handle.get (gdbarch); | |
12170 | if (data == nullptr) | |
12171 | data = remote_g_packet_data_handle.emplace (gdbarch); | |
12172 | return data; | |
29709017 DJ |
12173 | } |
12174 | ||
12175 | void | |
12176 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
12177 | const struct target_desc *tdesc) | |
12178 | { | |
cb275538 | 12179 | struct remote_g_packet_data *data = get_g_packet_data (gdbarch); |
29709017 DJ |
12180 | |
12181 | gdb_assert (tdesc != NULL); | |
12182 | ||
eefce37f TT |
12183 | for (const remote_g_packet_guess &guess : data->guesses) |
12184 | if (guess.bytes == bytes) | |
f34652de | 12185 | internal_error (_("Duplicate g packet description added for size %d"), |
29709017 DJ |
12186 | bytes); |
12187 | ||
eefce37f | 12188 | data->guesses.emplace_back (bytes, tdesc); |
29709017 DJ |
12189 | } |
12190 | ||
eefce37f TT |
12191 | /* Return true if remote_read_description would do anything on this target |
12192 | and architecture, false otherwise. */ | |
d962ef82 | 12193 | |
eefce37f | 12194 | static bool |
d962ef82 DJ |
12195 | remote_read_description_p (struct target_ops *target) |
12196 | { | |
99d9c3b9 | 12197 | remote_g_packet_data *data = get_g_packet_data (current_inferior ()->arch ()); |
d962ef82 | 12198 | |
eefce37f | 12199 | return !data->guesses.empty (); |
d962ef82 DJ |
12200 | } |
12201 | ||
f6ac5f3d PA |
12202 | const struct target_desc * |
12203 | remote_target::read_description () | |
29709017 | 12204 | { |
99d9c3b9 | 12205 | remote_g_packet_data *data = get_g_packet_data (current_inferior ()->arch ()); |
29709017 | 12206 | |
d962ef82 DJ |
12207 | /* Do not try this during initial connection, when we do not know |
12208 | whether there is a running but stopped thread. */ | |
55f6301a | 12209 | if (!target_has_execution () || inferior_ptid == null_ptid) |
b6a8c27b | 12210 | return beneath ()->read_description (); |
d962ef82 | 12211 | |
eefce37f | 12212 | if (!data->guesses.empty ()) |
29709017 | 12213 | { |
29709017 DJ |
12214 | int bytes = send_g_packet (); |
12215 | ||
eefce37f TT |
12216 | for (const remote_g_packet_guess &guess : data->guesses) |
12217 | if (guess.bytes == bytes) | |
12218 | return guess.tdesc; | |
29709017 DJ |
12219 | |
12220 | /* We discard the g packet. A minor optimization would be to | |
12221 | hold on to it, and fill the register cache once we have selected | |
12222 | an architecture, but it's too tricky to do safely. */ | |
12223 | } | |
12224 | ||
b6a8c27b | 12225 | return beneath ()->read_description (); |
29709017 DJ |
12226 | } |
12227 | ||
a6b151f1 DJ |
12228 | /* Remote file transfer support. This is host-initiated I/O, not |
12229 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
12230 | ||
12231 | /* If *LEFT is at least the length of STRING, copy STRING to | |
12232 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12233 | decrease *LEFT. Otherwise raise an error. */ | |
12234 | ||
12235 | static void | |
a121b7c1 | 12236 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
12237 | { |
12238 | int len = strlen (string); | |
12239 | ||
12240 | if (len > *left) | |
12241 | error (_("Packet too long for target.")); | |
12242 | ||
12243 | memcpy (*buffer, string, len); | |
12244 | *buffer += len; | |
12245 | *left -= len; | |
12246 | ||
12247 | /* NUL-terminate the buffer as a convenience, if there is | |
12248 | room. */ | |
12249 | if (*left) | |
12250 | **buffer = '\0'; | |
12251 | } | |
12252 | ||
12253 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
12254 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12255 | decrease *LEFT. Otherwise raise an error. */ | |
12256 | ||
12257 | static void | |
12258 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
12259 | int len) | |
12260 | { | |
12261 | if (2 * len > *left) | |
12262 | error (_("Packet too long for target.")); | |
12263 | ||
12264 | bin2hex (bytes, *buffer, len); | |
12265 | *buffer += 2 * len; | |
12266 | *left -= 2 * len; | |
12267 | ||
12268 | /* NUL-terminate the buffer as a convenience, if there is | |
12269 | room. */ | |
12270 | if (*left) | |
12271 | **buffer = '\0'; | |
12272 | } | |
12273 | ||
12274 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
12275 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12276 | decrease *LEFT. Otherwise raise an error. */ | |
12277 | ||
12278 | static void | |
12279 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
12280 | { | |
12281 | int len = hexnumlen (value); | |
12282 | ||
12283 | if (len > *left) | |
12284 | error (_("Packet too long for target.")); | |
12285 | ||
12286 | hexnumstr (*buffer, value); | |
12287 | *buffer += len; | |
12288 | *left -= len; | |
12289 | ||
12290 | /* NUL-terminate the buffer as a convenience, if there is | |
12291 | room. */ | |
12292 | if (*left) | |
12293 | **buffer = '\0'; | |
12294 | } | |
12295 | ||
12296 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
b872057a | 12297 | value, *REMOTE_ERRNO to the remote error number or FILEIO_SUCCESS if none |
a6b151f1 DJ |
12298 | was included, and *ATTACHMENT to point to the start of the annex |
12299 | if any. The length of the packet isn't needed here; there may | |
12300 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
12301 | ||
12302 | Return 0 if the packet could be parsed, -1 if it could not. If | |
12303 | -1 is returned, the other variables may not be initialized. */ | |
12304 | ||
12305 | static int | |
aa2838cc | 12306 | remote_hostio_parse_result (const char *buffer, int *retcode, |
b872057a | 12307 | fileio_error *remote_errno, const char **attachment) |
a6b151f1 DJ |
12308 | { |
12309 | char *p, *p2; | |
12310 | ||
b872057a | 12311 | *remote_errno = FILEIO_SUCCESS; |
a6b151f1 DJ |
12312 | *attachment = NULL; |
12313 | ||
12314 | if (buffer[0] != 'F') | |
12315 | return -1; | |
12316 | ||
12317 | errno = 0; | |
12318 | *retcode = strtol (&buffer[1], &p, 16); | |
12319 | if (errno != 0 || p == &buffer[1]) | |
12320 | return -1; | |
12321 | ||
12322 | /* Check for ",errno". */ | |
12323 | if (*p == ',') | |
12324 | { | |
12325 | errno = 0; | |
b872057a | 12326 | *remote_errno = (fileio_error) strtol (p + 1, &p2, 16); |
a6b151f1 DJ |
12327 | if (errno != 0 || p + 1 == p2) |
12328 | return -1; | |
12329 | p = p2; | |
12330 | } | |
12331 | ||
12332 | /* Check for ";attachment". If there is no attachment, the | |
12333 | packet should end here. */ | |
12334 | if (*p == ';') | |
12335 | { | |
12336 | *attachment = p + 1; | |
12337 | return 0; | |
12338 | } | |
12339 | else if (*p == '\0') | |
12340 | return 0; | |
12341 | else | |
12342 | return -1; | |
12343 | } | |
12344 | ||
12345 | /* Send a prepared I/O packet to the target and read its response. | |
12346 | The prepared packet is in the global RS->BUF before this function | |
12347 | is called, and the answer is there when we return. | |
12348 | ||
12349 | COMMAND_BYTES is the length of the request to send, which may include | |
12350 | binary data. WHICH_PACKET is the packet configuration to check | |
12351 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
12352 | is set to the error number and -1 is returned. Otherwise the value | |
12353 | returned by the function is returned. | |
12354 | ||
12355 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
12356 | attachment is expected; an error will be reported if there's a | |
12357 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
12358 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
12359 | attachment's length. */ | |
12360 | ||
6b8edb51 PA |
12361 | int |
12362 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
b872057a | 12363 | fileio_error *remote_errno, const char **attachment, |
6b8edb51 | 12364 | int *attachment_len) |
a6b151f1 DJ |
12365 | { |
12366 | struct remote_state *rs = get_remote_state (); | |
12367 | int ret, bytes_read; | |
aa2838cc | 12368 | const char *attachment_tmp; |
a6b151f1 | 12369 | |
ff52c073 | 12370 | if (m_features.packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
12371 | { |
12372 | *remote_errno = FILEIO_ENOSYS; | |
12373 | return -1; | |
12374 | } | |
12375 | ||
8d64371b | 12376 | putpkt_binary (rs->buf.data (), command_bytes); |
aa7b36b8 | 12377 | bytes_read = getpkt (&rs->buf); |
a6b151f1 DJ |
12378 | |
12379 | /* If it timed out, something is wrong. Don't try to parse the | |
12380 | buffer. */ | |
12381 | if (bytes_read < 0) | |
12382 | { | |
12383 | *remote_errno = FILEIO_EINVAL; | |
12384 | return -1; | |
12385 | } | |
12386 | ||
ff52c073 | 12387 | switch (m_features.packet_ok (rs->buf, which_packet)) |
a6b151f1 DJ |
12388 | { |
12389 | case PACKET_ERROR: | |
12390 | *remote_errno = FILEIO_EINVAL; | |
12391 | return -1; | |
12392 | case PACKET_UNKNOWN: | |
12393 | *remote_errno = FILEIO_ENOSYS; | |
12394 | return -1; | |
12395 | case PACKET_OK: | |
12396 | break; | |
12397 | } | |
12398 | ||
8d64371b | 12399 | if (remote_hostio_parse_result (rs->buf.data (), &ret, remote_errno, |
a6b151f1 DJ |
12400 | &attachment_tmp)) |
12401 | { | |
12402 | *remote_errno = FILEIO_EINVAL; | |
12403 | return -1; | |
12404 | } | |
12405 | ||
12406 | /* Make sure we saw an attachment if and only if we expected one. */ | |
12407 | if ((attachment_tmp == NULL && attachment != NULL) | |
12408 | || (attachment_tmp != NULL && attachment == NULL)) | |
12409 | { | |
12410 | *remote_errno = FILEIO_EINVAL; | |
12411 | return -1; | |
12412 | } | |
12413 | ||
12414 | /* If an attachment was found, it must point into the packet buffer; | |
12415 | work out how many bytes there were. */ | |
12416 | if (attachment_tmp != NULL) | |
12417 | { | |
12418 | *attachment = attachment_tmp; | |
8d64371b | 12419 | *attachment_len = bytes_read - (*attachment - rs->buf.data ()); |
a6b151f1 DJ |
12420 | } |
12421 | ||
12422 | return ret; | |
12423 | } | |
12424 | ||
dd194f6b | 12425 | /* See declaration.h. */ |
80152258 | 12426 | |
dd194f6b PA |
12427 | void |
12428 | readahead_cache::invalidate () | |
80152258 | 12429 | { |
dd194f6b | 12430 | this->fd = -1; |
80152258 PA |
12431 | } |
12432 | ||
dd194f6b | 12433 | /* See declaration.h. */ |
80152258 | 12434 | |
dd194f6b PA |
12435 | void |
12436 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 12437 | { |
dd194f6b PA |
12438 | if (this->fd == fd) |
12439 | this->fd = -1; | |
80152258 PA |
12440 | } |
12441 | ||
15a201c8 GB |
12442 | /* Set the filesystem remote_hostio functions that take FILENAME |
12443 | arguments will use. Return 0 on success, or -1 if an error | |
12444 | occurs (and set *REMOTE_ERRNO). */ | |
12445 | ||
6b8edb51 PA |
12446 | int |
12447 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
b872057a | 12448 | fileio_error *remote_errno) |
15a201c8 GB |
12449 | { |
12450 | struct remote_state *rs = get_remote_state (); | |
12451 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
8d64371b | 12452 | char *p = rs->buf.data (); |
15a201c8 GB |
12453 | int left = get_remote_packet_size () - 1; |
12454 | char arg[9]; | |
12455 | int ret; | |
12456 | ||
ff52c073 | 12457 | if (m_features.packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) |
15a201c8 GB |
12458 | return 0; |
12459 | ||
12460 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
12461 | return 0; | |
12462 | ||
12463 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
12464 | ||
12465 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
12466 | remote_buffer_add_string (&p, &left, arg); | |
12467 | ||
8d64371b | 12468 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_setfs, |
15a201c8 GB |
12469 | remote_errno, NULL, NULL); |
12470 | ||
ff52c073 | 12471 | if (m_features.packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) |
15a201c8 GB |
12472 | return 0; |
12473 | ||
12474 | if (ret == 0) | |
12475 | rs->fs_pid = required_pid; | |
12476 | ||
12477 | return ret; | |
12478 | } | |
12479 | ||
12e2a5fd | 12480 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 12481 | |
6b8edb51 PA |
12482 | int |
12483 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
12484 | int flags, int mode, int warn_if_slow, | |
b872057a | 12485 | fileio_error *remote_errno) |
a6b151f1 DJ |
12486 | { |
12487 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12488 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12489 | int left = get_remote_packet_size () - 1; |
12490 | ||
4313b8c0 GB |
12491 | if (warn_if_slow) |
12492 | { | |
12493 | static int warning_issued = 0; | |
12494 | ||
6cb06a8c TT |
12495 | gdb_printf (_("Reading %s from remote target...\n"), |
12496 | filename); | |
4313b8c0 GB |
12497 | |
12498 | if (!warning_issued) | |
12499 | { | |
12500 | warning (_("File transfers from remote targets can be slow." | |
12501 | " Use \"set sysroot\" to access files locally" | |
12502 | " instead.")); | |
12503 | warning_issued = 1; | |
12504 | } | |
12505 | } | |
12506 | ||
15a201c8 GB |
12507 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12508 | return -1; | |
12509 | ||
a6b151f1 DJ |
12510 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
12511 | ||
12512 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12513 | strlen (filename)); | |
12514 | remote_buffer_add_string (&p, &left, ","); | |
12515 | ||
12516 | remote_buffer_add_int (&p, &left, flags); | |
12517 | remote_buffer_add_string (&p, &left, ","); | |
12518 | ||
12519 | remote_buffer_add_int (&p, &left, mode); | |
12520 | ||
8d64371b | 12521 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_open, |
a6b151f1 DJ |
12522 | remote_errno, NULL, NULL); |
12523 | } | |
12524 | ||
f6ac5f3d PA |
12525 | int |
12526 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
12527 | int flags, int mode, int warn_if_slow, | |
b872057a | 12528 | fileio_error *remote_errno) |
f6ac5f3d | 12529 | { |
6b8edb51 | 12530 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
12531 | remote_errno); |
12532 | } | |
12533 | ||
12e2a5fd | 12534 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 12535 | |
6b8edb51 PA |
12536 | int |
12537 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 12538 | ULONGEST offset, fileio_error *remote_errno) |
a6b151f1 DJ |
12539 | { |
12540 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12541 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12542 | int left = get_remote_packet_size (); |
12543 | int out_len; | |
12544 | ||
dd194f6b | 12545 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12546 | |
a6b151f1 DJ |
12547 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
12548 | ||
12549 | remote_buffer_add_int (&p, &left, fd); | |
12550 | remote_buffer_add_string (&p, &left, ","); | |
12551 | ||
12552 | remote_buffer_add_int (&p, &left, offset); | |
12553 | remote_buffer_add_string (&p, &left, ","); | |
12554 | ||
124e13d9 | 12555 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
8d64371b TT |
12556 | (get_remote_packet_size () |
12557 | - (p - rs->buf.data ()))); | |
a6b151f1 | 12558 | |
8d64371b | 12559 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pwrite, |
a6b151f1 DJ |
12560 | remote_errno, NULL, NULL); |
12561 | } | |
12562 | ||
f6ac5f3d PA |
12563 | int |
12564 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 12565 | ULONGEST offset, fileio_error *remote_errno) |
f6ac5f3d | 12566 | { |
6b8edb51 | 12567 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12568 | } |
12569 | ||
80152258 PA |
12570 | /* Helper for the implementation of to_fileio_pread. Read the file |
12571 | from the remote side with vFile:pread. */ | |
a6b151f1 | 12572 | |
6b8edb51 PA |
12573 | int |
12574 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
b872057a | 12575 | ULONGEST offset, fileio_error *remote_errno) |
a6b151f1 DJ |
12576 | { |
12577 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12578 | char *p = rs->buf.data (); |
aa2838cc | 12579 | const char *attachment; |
a6b151f1 DJ |
12580 | int left = get_remote_packet_size (); |
12581 | int ret, attachment_len; | |
12582 | int read_len; | |
12583 | ||
12584 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
12585 | ||
12586 | remote_buffer_add_int (&p, &left, fd); | |
12587 | remote_buffer_add_string (&p, &left, ","); | |
12588 | ||
12589 | remote_buffer_add_int (&p, &left, len); | |
12590 | remote_buffer_add_string (&p, &left, ","); | |
12591 | ||
12592 | remote_buffer_add_int (&p, &left, offset); | |
12593 | ||
8d64371b | 12594 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pread, |
a6b151f1 DJ |
12595 | remote_errno, &attachment, |
12596 | &attachment_len); | |
12597 | ||
12598 | if (ret < 0) | |
12599 | return ret; | |
12600 | ||
bc20a4af | 12601 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
12602 | read_buf, len); |
12603 | if (read_len != ret) | |
12604 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
12605 | ||
12606 | return ret; | |
12607 | } | |
12608 | ||
dd194f6b | 12609 | /* See declaration.h. */ |
80152258 | 12610 | |
dd194f6b PA |
12611 | int |
12612 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
12613 | ULONGEST offset) | |
80152258 | 12614 | { |
dd194f6b PA |
12615 | if (this->fd == fd |
12616 | && this->offset <= offset | |
6b19f38a | 12617 | && offset < this->offset + this->buf.size ()) |
80152258 | 12618 | { |
6b19f38a | 12619 | ULONGEST max = this->offset + this->buf.size (); |
80152258 PA |
12620 | |
12621 | if (offset + len > max) | |
12622 | len = max - offset; | |
12623 | ||
6b19f38a | 12624 | memcpy (read_buf, &this->buf[offset - this->offset], len); |
80152258 PA |
12625 | return len; |
12626 | } | |
12627 | ||
12628 | return 0; | |
12629 | } | |
12630 | ||
12631 | /* Implementation of to_fileio_pread. */ | |
12632 | ||
6b8edb51 PA |
12633 | int |
12634 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 12635 | ULONGEST offset, fileio_error *remote_errno) |
80152258 PA |
12636 | { |
12637 | int ret; | |
12638 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12639 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12640 | |
dd194f6b | 12641 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12642 | if (ret > 0) |
12643 | { | |
12644 | cache->hit_count++; | |
12645 | ||
2189c312 SM |
12646 | remote_debug_printf ("readahead cache hit %s", |
12647 | pulongest (cache->hit_count)); | |
80152258 PA |
12648 | return ret; |
12649 | } | |
12650 | ||
12651 | cache->miss_count++; | |
2189c312 SM |
12652 | |
12653 | remote_debug_printf ("readahead cache miss %s", | |
12654 | pulongest (cache->miss_count)); | |
80152258 PA |
12655 | |
12656 | cache->fd = fd; | |
12657 | cache->offset = offset; | |
6b19f38a | 12658 | cache->buf.resize (get_remote_packet_size ()); |
80152258 | 12659 | |
6b19f38a TT |
12660 | ret = remote_hostio_pread_vFile (cache->fd, &cache->buf[0], |
12661 | cache->buf.size (), | |
80152258 PA |
12662 | cache->offset, remote_errno); |
12663 | if (ret <= 0) | |
12664 | { | |
dd194f6b | 12665 | cache->invalidate_fd (fd); |
80152258 PA |
12666 | return ret; |
12667 | } | |
12668 | ||
6b19f38a | 12669 | cache->buf.resize (ret); |
dd194f6b | 12670 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12671 | } |
12672 | ||
f6ac5f3d PA |
12673 | int |
12674 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 12675 | ULONGEST offset, fileio_error *remote_errno) |
f6ac5f3d | 12676 | { |
6b8edb51 | 12677 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12678 | } |
12679 | ||
12e2a5fd | 12680 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12681 | |
6b8edb51 | 12682 | int |
b872057a | 12683 | remote_target::remote_hostio_close (int fd, fileio_error *remote_errno) |
a6b151f1 DJ |
12684 | { |
12685 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12686 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12687 | int left = get_remote_packet_size () - 1; |
12688 | ||
dd194f6b | 12689 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12690 | |
a6b151f1 DJ |
12691 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12692 | ||
12693 | remote_buffer_add_int (&p, &left, fd); | |
12694 | ||
8d64371b | 12695 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_close, |
a6b151f1 DJ |
12696 | remote_errno, NULL, NULL); |
12697 | } | |
12698 | ||
f6ac5f3d | 12699 | int |
b872057a | 12700 | remote_target::fileio_close (int fd, fileio_error *remote_errno) |
f6ac5f3d | 12701 | { |
6b8edb51 | 12702 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12703 | } |
12704 | ||
12e2a5fd | 12705 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12706 | |
6b8edb51 PA |
12707 | int |
12708 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
b872057a | 12709 | fileio_error *remote_errno) |
a6b151f1 DJ |
12710 | { |
12711 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12712 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12713 | int left = get_remote_packet_size () - 1; |
12714 | ||
15a201c8 GB |
12715 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12716 | return -1; | |
12717 | ||
a6b151f1 DJ |
12718 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12719 | ||
12720 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12721 | strlen (filename)); | |
12722 | ||
8d64371b | 12723 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_unlink, |
a6b151f1 DJ |
12724 | remote_errno, NULL, NULL); |
12725 | } | |
12726 | ||
f6ac5f3d PA |
12727 | int |
12728 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
b872057a | 12729 | fileio_error *remote_errno) |
f6ac5f3d | 12730 | { |
6b8edb51 | 12731 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12732 | } |
12733 | ||
12e2a5fd | 12734 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12735 | |
f6ac5f3d PA |
12736 | gdb::optional<std::string> |
12737 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
b872057a | 12738 | fileio_error *remote_errno) |
b9e7b9c3 UW |
12739 | { |
12740 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12741 | char *p = rs->buf.data (); |
aa2838cc | 12742 | const char *attachment; |
b9e7b9c3 UW |
12743 | int left = get_remote_packet_size (); |
12744 | int len, attachment_len; | |
12745 | int read_len; | |
b9e7b9c3 | 12746 | |
15a201c8 | 12747 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12748 | return {}; |
15a201c8 | 12749 | |
b9e7b9c3 UW |
12750 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12751 | ||
12752 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12753 | strlen (filename)); | |
12754 | ||
8d64371b | 12755 | len = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_readlink, |
b9e7b9c3 UW |
12756 | remote_errno, &attachment, |
12757 | &attachment_len); | |
12758 | ||
12759 | if (len < 0) | |
e0d3522b | 12760 | return {}; |
b9e7b9c3 | 12761 | |
e0d3522b | 12762 | std::string ret (len, '\0'); |
b9e7b9c3 | 12763 | |
bc20a4af | 12764 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12765 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12766 | if (read_len != len) |
12767 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12768 | ||
b9e7b9c3 UW |
12769 | return ret; |
12770 | } | |
12771 | ||
12e2a5fd | 12772 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12773 | |
f6ac5f3d | 12774 | int |
b872057a | 12775 | remote_target::fileio_fstat (int fd, struct stat *st, fileio_error *remote_errno) |
0a93529c GB |
12776 | { |
12777 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12778 | char *p = rs->buf.data (); |
0a93529c GB |
12779 | int left = get_remote_packet_size (); |
12780 | int attachment_len, ret; | |
aa2838cc | 12781 | const char *attachment; |
0a93529c GB |
12782 | struct fio_stat fst; |
12783 | int read_len; | |
12784 | ||
464b0089 GB |
12785 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12786 | ||
12787 | remote_buffer_add_int (&p, &left, fd); | |
12788 | ||
8d64371b | 12789 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_fstat, |
464b0089 GB |
12790 | remote_errno, &attachment, |
12791 | &attachment_len); | |
12792 | if (ret < 0) | |
0a93529c | 12793 | { |
464b0089 GB |
12794 | if (*remote_errno != FILEIO_ENOSYS) |
12795 | return ret; | |
12796 | ||
0a93529c GB |
12797 | /* Strictly we should return -1, ENOSYS here, but when |
12798 | "set sysroot remote:" was implemented in August 2008 | |
12799 | BFD's need for a stat function was sidestepped with | |
12800 | this hack. This was not remedied until March 2015 | |
12801 | so we retain the previous behavior to avoid breaking | |
12802 | compatibility. | |
12803 | ||
12804 | Note that the memset is a March 2015 addition; older | |
12805 | GDBs set st_size *and nothing else* so the structure | |
12806 | would have garbage in all other fields. This might | |
12807 | break something but retaining the previous behavior | |
12808 | here would be just too wrong. */ | |
12809 | ||
12810 | memset (st, 0, sizeof (struct stat)); | |
12811 | st->st_size = INT_MAX; | |
12812 | return 0; | |
12813 | } | |
12814 | ||
0a93529c GB |
12815 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12816 | (gdb_byte *) &fst, sizeof (fst)); | |
12817 | ||
12818 | if (read_len != ret) | |
12819 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12820 | ||
12821 | if (read_len != sizeof (fst)) | |
12822 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12823 | read_len, (int) sizeof (fst)); | |
12824 | ||
12825 | remote_fileio_to_host_stat (&fst, st); | |
12826 | ||
12827 | return 0; | |
12828 | } | |
12829 | ||
12e2a5fd | 12830 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12831 | |
57810aa7 | 12832 | bool |
f6ac5f3d | 12833 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12834 | { |
12835 | /* Valgrind GDB presents itself as a remote target but works | |
12836 | on the local filesystem: it does not implement remote get | |
12837 | and users are not expected to set a sysroot. To handle | |
12838 | this case we treat the remote filesystem as local if the | |
12839 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12840 | does not support vFile:open. */ | |
e0700ba4 | 12841 | if (gdb_sysroot == TARGET_SYSROOT_PREFIX) |
e3dd7556 | 12842 | { |
ff52c073 | 12843 | packet_support ps = m_features.packet_support (PACKET_vFile_open); |
e3dd7556 GB |
12844 | |
12845 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12846 | { | |
b872057a SM |
12847 | int fd; |
12848 | fileio_error remote_errno; | |
e3dd7556 GB |
12849 | |
12850 | /* Try opening a file to probe support. The supplied | |
12851 | filename is irrelevant, we only care about whether | |
12852 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12853 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12854 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12855 | &remote_errno); |
12856 | ||
12857 | if (fd >= 0) | |
6b8edb51 | 12858 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 | 12859 | |
ff52c073 | 12860 | ps = m_features.packet_support (PACKET_vFile_open); |
e3dd7556 GB |
12861 | } |
12862 | ||
12863 | if (ps == PACKET_DISABLE) | |
12864 | { | |
12865 | static int warning_issued = 0; | |
12866 | ||
12867 | if (!warning_issued) | |
12868 | { | |
12869 | warning (_("remote target does not support file" | |
12870 | " transfer, attempting to access files" | |
12871 | " from local filesystem.")); | |
12872 | warning_issued = 1; | |
12873 | } | |
12874 | ||
57810aa7 | 12875 | return true; |
e3dd7556 GB |
12876 | } |
12877 | } | |
12878 | ||
57810aa7 | 12879 | return false; |
e3dd7556 GB |
12880 | } |
12881 | ||
a6b151f1 | 12882 | static char * |
b872057a | 12883 | remote_hostio_error (fileio_error errnum) |
a6b151f1 | 12884 | { |
517a63c2 | 12885 | int host_error = fileio_error_to_host (errnum); |
a6b151f1 DJ |
12886 | |
12887 | if (host_error == -1) | |
12888 | error (_("Unknown remote I/O error %d"), errnum); | |
12889 | else | |
12890 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12891 | } | |
12892 | ||
440b7aec PA |
12893 | /* A RAII wrapper around a remote file descriptor. */ |
12894 | ||
12895 | class scoped_remote_fd | |
a6b151f1 | 12896 | { |
440b7aec | 12897 | public: |
6b8edb51 PA |
12898 | scoped_remote_fd (remote_target *remote, int fd) |
12899 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12900 | { |
12901 | } | |
a6b151f1 | 12902 | |
440b7aec PA |
12903 | ~scoped_remote_fd () |
12904 | { | |
12905 | if (m_fd != -1) | |
12906 | { | |
12907 | try | |
12908 | { | |
b872057a | 12909 | fileio_error remote_errno; |
6b8edb51 | 12910 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12911 | } |
12912 | catch (...) | |
12913 | { | |
12914 | /* Swallow exception before it escapes the dtor. If | |
12915 | something goes wrong, likely the connection is gone, | |
12916 | and there's nothing else that can be done. */ | |
12917 | } | |
12918 | } | |
12919 | } | |
12920 | ||
12921 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12922 | ||
12923 | /* Release ownership of the file descriptor, and return it. */ | |
88a774b9 | 12924 | ATTRIBUTE_UNUSED_RESULT int release () noexcept |
440b7aec PA |
12925 | { |
12926 | int fd = m_fd; | |
12927 | m_fd = -1; | |
12928 | return fd; | |
12929 | } | |
12930 | ||
12931 | /* Return the owned file descriptor. */ | |
12932 | int get () const noexcept | |
12933 | { | |
12934 | return m_fd; | |
12935 | } | |
12936 | ||
12937 | private: | |
6b8edb51 PA |
12938 | /* The remote target. */ |
12939 | remote_target *m_remote; | |
12940 | ||
440b7aec PA |
12941 | /* The owned remote I/O file descriptor. */ |
12942 | int m_fd; | |
12943 | }; | |
a6b151f1 DJ |
12944 | |
12945 | void | |
12946 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12947 | { |
12948 | remote_target *remote = get_current_remote_target (); | |
12949 | ||
12950 | if (remote == nullptr) | |
12951 | error (_("command can only be used with remote target")); | |
12952 | ||
12953 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12954 | } | |
12955 | ||
12956 | void | |
12957 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12958 | int from_tty) | |
a6b151f1 | 12959 | { |
b872057a SM |
12960 | int retcode, bytes, io_size; |
12961 | fileio_error remote_errno; | |
a6b151f1 DJ |
12962 | int bytes_in_buffer; |
12963 | int saw_eof; | |
12964 | ULONGEST offset; | |
a6b151f1 | 12965 | |
d419f42d | 12966 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12967 | if (file == NULL) |
12968 | perror_with_name (local_file); | |
a6b151f1 | 12969 | |
440b7aec | 12970 | scoped_remote_fd fd |
6b8edb51 PA |
12971 | (this, remote_hostio_open (NULL, |
12972 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12973 | | FILEIO_O_TRUNC), | |
12974 | 0700, 0, &remote_errno)); | |
440b7aec | 12975 | if (fd.get () == -1) |
a6b151f1 DJ |
12976 | remote_hostio_error (remote_errno); |
12977 | ||
12978 | /* Send up to this many bytes at once. They won't all fit in the | |
12979 | remote packet limit, so we'll transfer slightly fewer. */ | |
12980 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12981 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12982 | |
a6b151f1 DJ |
12983 | bytes_in_buffer = 0; |
12984 | saw_eof = 0; | |
12985 | offset = 0; | |
12986 | while (bytes_in_buffer || !saw_eof) | |
12987 | { | |
12988 | if (!saw_eof) | |
12989 | { | |
5ca3b260 | 12990 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12991 | io_size - bytes_in_buffer, |
d419f42d | 12992 | file.get ()); |
a6b151f1 DJ |
12993 | if (bytes == 0) |
12994 | { | |
d419f42d | 12995 | if (ferror (file.get ())) |
a6b151f1 DJ |
12996 | error (_("Error reading %s."), local_file); |
12997 | else | |
12998 | { | |
12999 | /* EOF. Unless there is something still in the | |
13000 | buffer from the last iteration, we are done. */ | |
13001 | saw_eof = 1; | |
13002 | if (bytes_in_buffer == 0) | |
13003 | break; | |
13004 | } | |
13005 | } | |
13006 | } | |
13007 | else | |
13008 | bytes = 0; | |
13009 | ||
13010 | bytes += bytes_in_buffer; | |
13011 | bytes_in_buffer = 0; | |
13012 | ||
5ca3b260 | 13013 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 13014 | offset, &remote_errno); |
a6b151f1 DJ |
13015 | |
13016 | if (retcode < 0) | |
13017 | remote_hostio_error (remote_errno); | |
13018 | else if (retcode == 0) | |
13019 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
13020 | else if (retcode < bytes) | |
13021 | { | |
13022 | /* Short write. Save the rest of the read data for the next | |
13023 | write. */ | |
13024 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 13025 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
13026 | } |
13027 | ||
13028 | offset += retcode; | |
13029 | } | |
13030 | ||
6b8edb51 | 13031 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
13032 | remote_hostio_error (remote_errno); |
13033 | ||
13034 | if (from_tty) | |
6cb06a8c | 13035 | gdb_printf (_("Successfully sent file \"%s\".\n"), local_file); |
a6b151f1 DJ |
13036 | } |
13037 | ||
13038 | void | |
13039 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
13040 | { |
13041 | remote_target *remote = get_current_remote_target (); | |
13042 | ||
13043 | if (remote == nullptr) | |
13044 | error (_("command can only be used with remote target")); | |
13045 | ||
13046 | remote->remote_file_get (remote_file, local_file, from_tty); | |
13047 | } | |
13048 | ||
13049 | void | |
13050 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
13051 | int from_tty) | |
a6b151f1 | 13052 | { |
b872057a SM |
13053 | fileio_error remote_errno; |
13054 | int bytes, io_size; | |
a6b151f1 | 13055 | ULONGEST offset; |
a6b151f1 | 13056 | |
440b7aec | 13057 | scoped_remote_fd fd |
6b8edb51 PA |
13058 | (this, remote_hostio_open (NULL, |
13059 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
13060 | &remote_errno)); | |
440b7aec | 13061 | if (fd.get () == -1) |
a6b151f1 DJ |
13062 | remote_hostio_error (remote_errno); |
13063 | ||
d419f42d | 13064 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
13065 | if (file == NULL) |
13066 | perror_with_name (local_file); | |
a6b151f1 DJ |
13067 | |
13068 | /* Send up to this many bytes at once. They won't all fit in the | |
13069 | remote packet limit, so we'll transfer slightly fewer. */ | |
13070 | io_size = get_remote_packet_size (); | |
5ca3b260 | 13071 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 13072 | |
a6b151f1 DJ |
13073 | offset = 0; |
13074 | while (1) | |
13075 | { | |
5ca3b260 | 13076 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 13077 | &remote_errno); |
a6b151f1 DJ |
13078 | if (bytes == 0) |
13079 | /* Success, but no bytes, means end-of-file. */ | |
13080 | break; | |
13081 | if (bytes == -1) | |
13082 | remote_hostio_error (remote_errno); | |
13083 | ||
13084 | offset += bytes; | |
13085 | ||
5ca3b260 | 13086 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
13087 | if (bytes == 0) |
13088 | perror_with_name (local_file); | |
13089 | } | |
13090 | ||
6b8edb51 | 13091 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
13092 | remote_hostio_error (remote_errno); |
13093 | ||
13094 | if (from_tty) | |
6cb06a8c | 13095 | gdb_printf (_("Successfully fetched file \"%s\".\n"), remote_file); |
a6b151f1 DJ |
13096 | } |
13097 | ||
13098 | void | |
13099 | remote_file_delete (const char *remote_file, int from_tty) | |
13100 | { | |
6b8edb51 | 13101 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 13102 | |
6b8edb51 | 13103 | if (remote == nullptr) |
a6b151f1 DJ |
13104 | error (_("command can only be used with remote target")); |
13105 | ||
6b8edb51 PA |
13106 | remote->remote_file_delete (remote_file, from_tty); |
13107 | } | |
13108 | ||
13109 | void | |
13110 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
13111 | { | |
b872057a SM |
13112 | int retcode; |
13113 | fileio_error remote_errno; | |
6b8edb51 PA |
13114 | |
13115 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
13116 | if (retcode == -1) |
13117 | remote_hostio_error (remote_errno); | |
13118 | ||
13119 | if (from_tty) | |
6cb06a8c | 13120 | gdb_printf (_("Successfully deleted file \"%s\".\n"), remote_file); |
a6b151f1 DJ |
13121 | } |
13122 | ||
13123 | static void | |
ac88e2de | 13124 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 13125 | { |
d1a41061 PP |
13126 | if (args == NULL) |
13127 | error_no_arg (_("file to put")); | |
13128 | ||
773a1edc | 13129 | gdb_argv argv (args); |
a6b151f1 DJ |
13130 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
13131 | error (_("Invalid parameters to remote put")); | |
13132 | ||
13133 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
13134 | } |
13135 | ||
13136 | static void | |
ac88e2de | 13137 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 13138 | { |
d1a41061 PP |
13139 | if (args == NULL) |
13140 | error_no_arg (_("file to get")); | |
13141 | ||
773a1edc | 13142 | gdb_argv argv (args); |
a6b151f1 DJ |
13143 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
13144 | error (_("Invalid parameters to remote get")); | |
13145 | ||
13146 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
13147 | } |
13148 | ||
13149 | static void | |
ac88e2de | 13150 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 13151 | { |
d1a41061 PP |
13152 | if (args == NULL) |
13153 | error_no_arg (_("file to delete")); | |
13154 | ||
773a1edc | 13155 | gdb_argv argv (args); |
a6b151f1 DJ |
13156 | if (argv[0] == NULL || argv[1] != NULL) |
13157 | error (_("Invalid parameters to remote delete")); | |
13158 | ||
13159 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
13160 | } |
13161 | ||
57810aa7 | 13162 | bool |
f6ac5f3d | 13163 | remote_target::can_execute_reverse () |
b2175913 | 13164 | { |
ff52c073 CS |
13165 | if (m_features.packet_support (PACKET_bs) == PACKET_ENABLE |
13166 | || m_features.packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 13167 | return true; |
40ab02ce | 13168 | else |
57810aa7 | 13169 | return false; |
b2175913 MS |
13170 | } |
13171 | ||
57810aa7 | 13172 | bool |
f6ac5f3d | 13173 | remote_target::supports_non_stop () |
74531fed | 13174 | { |
57810aa7 | 13175 | return true; |
74531fed PA |
13176 | } |
13177 | ||
57810aa7 | 13178 | bool |
f6ac5f3d | 13179 | remote_target::supports_disable_randomization () |
03583c20 UW |
13180 | { |
13181 | /* Only supported in extended mode. */ | |
57810aa7 | 13182 | return false; |
03583c20 UW |
13183 | } |
13184 | ||
57810aa7 | 13185 | bool |
f6ac5f3d | 13186 | remote_target::supports_multi_process () |
8a305172 | 13187 | { |
ff52c073 | 13188 | return m_features.remote_multi_process_p (); |
8a305172 PA |
13189 | } |
13190 | ||
ff52c073 CS |
13191 | int |
13192 | remote_target::remote_supports_cond_tracepoints () | |
782b2b07 | 13193 | { |
ff52c073 CS |
13194 | return (m_features.packet_support (PACKET_ConditionalTracepoints) |
13195 | == PACKET_ENABLE); | |
782b2b07 SS |
13196 | } |
13197 | ||
57810aa7 | 13198 | bool |
f6ac5f3d | 13199 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 13200 | { |
ff52c073 CS |
13201 | return (m_features.packet_support (PACKET_ConditionalBreakpoints) |
13202 | == PACKET_ENABLE); | |
3788aec7 LM |
13203 | } |
13204 | ||
ff52c073 CS |
13205 | int |
13206 | remote_target::remote_supports_fast_tracepoints () | |
7a697b8d | 13207 | { |
ff52c073 | 13208 | return m_features.packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
13209 | } |
13210 | ||
ff52c073 CS |
13211 | int |
13212 | remote_target::remote_supports_static_tracepoints () | |
0fb4aa4b | 13213 | { |
ff52c073 | 13214 | return m_features.packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
13215 | } |
13216 | ||
ff52c073 CS |
13217 | int |
13218 | remote_target::remote_supports_install_in_trace () | |
1e4d1764 | 13219 | { |
ff52c073 | 13220 | return m_features.packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
13221 | } |
13222 | ||
57810aa7 | 13223 | bool |
f6ac5f3d | 13224 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 13225 | { |
ff52c073 | 13226 | return (m_features.packet_support (PACKET_EnableDisableTracepoints_feature) |
4082afcc | 13227 | == PACKET_ENABLE); |
d248b706 KY |
13228 | } |
13229 | ||
57810aa7 | 13230 | bool |
f6ac5f3d | 13231 | remote_target::supports_string_tracing () |
3065dfb6 | 13232 | { |
ff52c073 | 13233 | return m_features.packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
13234 | } |
13235 | ||
57810aa7 | 13236 | bool |
f6ac5f3d | 13237 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 13238 | { |
ff52c073 | 13239 | return m_features.packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
13240 | } |
13241 | ||
f6ac5f3d PA |
13242 | void |
13243 | remote_target::trace_init () | |
35b1e5cc | 13244 | { |
b6bb3468 PA |
13245 | struct remote_state *rs = get_remote_state (); |
13246 | ||
35b1e5cc | 13247 | putpkt ("QTinit"); |
b6bb3468 | 13248 | remote_get_noisy_reply (); |
8d64371b | 13249 | if (strcmp (rs->buf.data (), "OK") != 0) |
35b1e5cc SS |
13250 | error (_("Target does not support this command.")); |
13251 | } | |
13252 | ||
409873ef SS |
13253 | /* Recursive routine to walk through command list including loops, and |
13254 | download packets for each command. */ | |
13255 | ||
6b8edb51 PA |
13256 | void |
13257 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
13258 | struct command_line *cmds) | |
409873ef SS |
13259 | { |
13260 | struct remote_state *rs = get_remote_state (); | |
13261 | struct command_line *cmd; | |
13262 | ||
13263 | for (cmd = cmds; cmd; cmd = cmd->next) | |
13264 | { | |
0df8b418 | 13265 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 13266 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 13267 | encode_source_string (num, addr, "cmd", cmd->line, |
8d64371b TT |
13268 | rs->buf.data () + strlen (rs->buf.data ()), |
13269 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13270 | putpkt (rs->buf); |
b6bb3468 | 13271 | remote_get_noisy_reply (); |
8d64371b | 13272 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13273 | warning (_("Target does not support source download.")); |
13274 | ||
13275 | if (cmd->control_type == while_control | |
13276 | || cmd->control_type == while_stepping_control) | |
13277 | { | |
12973681 | 13278 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 13279 | |
0df8b418 | 13280 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 13281 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 13282 | encode_source_string (num, addr, "cmd", "end", |
8d64371b TT |
13283 | rs->buf.data () + strlen (rs->buf.data ()), |
13284 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13285 | putpkt (rs->buf); |
b6bb3468 | 13286 | remote_get_noisy_reply (); |
8d64371b | 13287 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13288 | warning (_("Target does not support source download.")); |
13289 | } | |
13290 | } | |
13291 | } | |
13292 | ||
f6ac5f3d PA |
13293 | void |
13294 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc SS |
13295 | { |
13296 | CORE_ADDR tpaddr; | |
409873ef | 13297 | char addrbuf[40]; |
b44ec619 SM |
13298 | std::vector<std::string> tdp_actions; |
13299 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 13300 | char *pkt; |
e8ba3115 | 13301 | struct breakpoint *b = loc->owner; |
01bccc56 | 13302 | tracepoint *t = gdb::checked_static_cast<tracepoint *> (b); |
b6bb3468 | 13303 | struct remote_state *rs = get_remote_state (); |
3df3a985 | 13304 | int ret; |
ff36536c | 13305 | const char *err_msg = _("Tracepoint packet too large for target."); |
3df3a985 PFC |
13306 | size_t size_left; |
13307 | ||
13308 | /* We use a buffer other than rs->buf because we'll build strings | |
13309 | across multiple statements, and other statements in between could | |
13310 | modify rs->buf. */ | |
13311 | gdb::char_vector buf (get_remote_packet_size ()); | |
35b1e5cc | 13312 | |
dc673c81 | 13313 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
13314 | |
13315 | tpaddr = loc->address; | |
53807e9f | 13316 | strcpy (addrbuf, phex (tpaddr, sizeof (CORE_ADDR))); |
3df3a985 PFC |
13317 | ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x", |
13318 | b->number, addrbuf, /* address */ | |
13319 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
13320 | t->step_count, t->pass_count); | |
13321 | ||
13322 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13323 | error ("%s", err_msg); |
3df3a985 | 13324 | |
e8ba3115 YQ |
13325 | /* Fast tracepoints are mostly handled by the target, but we can |
13326 | tell the target how big of an instruction block should be moved | |
13327 | around. */ | |
13328 | if (b->type == bp_fast_tracepoint) | |
13329 | { | |
13330 | /* Only test for support at download time; we may not know | |
13331 | target capabilities at definition time. */ | |
13332 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 13333 | { |
6b940e6a PL |
13334 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
13335 | NULL)) | |
3df3a985 PFC |
13336 | { |
13337 | size_left = buf.size () - strlen (buf.data ()); | |
13338 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13339 | size_left, ":F%x", | |
13340 | gdb_insn_length (loc->gdbarch, tpaddr)); | |
13341 | ||
13342 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13343 | error ("%s", err_msg); |
3df3a985 | 13344 | } |
35b1e5cc | 13345 | else |
e8ba3115 YQ |
13346 | /* If it passed validation at definition but fails now, |
13347 | something is very wrong. */ | |
f34652de | 13348 | internal_error (_("Fast tracepoint not valid during download")); |
35b1e5cc | 13349 | } |
e8ba3115 YQ |
13350 | else |
13351 | /* Fast tracepoints are functionally identical to regular | |
13352 | tracepoints, so don't take lack of support as a reason to | |
13353 | give up on the trace run. */ | |
13354 | warning (_("Target does not support fast tracepoints, " | |
13355 | "downloading %d as regular tracepoint"), b->number); | |
13356 | } | |
7b572efb TT |
13357 | else if (b->type == bp_static_tracepoint |
13358 | || b->type == bp_static_marker_tracepoint) | |
e8ba3115 YQ |
13359 | { |
13360 | /* Only test for support at download time; we may not know | |
13361 | target capabilities at definition time. */ | |
13362 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 13363 | { |
e8ba3115 | 13364 | struct static_tracepoint_marker marker; |
0fb4aa4b | 13365 | |
e8ba3115 | 13366 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
3df3a985 PFC |
13367 | { |
13368 | size_left = buf.size () - strlen (buf.data ()); | |
13369 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13370 | size_left, ":S"); | |
13371 | ||
13372 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13373 | error ("%s", err_msg); |
3df3a985 | 13374 | } |
0fb4aa4b | 13375 | else |
e8ba3115 | 13376 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 13377 | } |
e8ba3115 YQ |
13378 | else |
13379 | /* Fast tracepoints are functionally identical to regular | |
13380 | tracepoints, so don't take lack of support as a reason | |
13381 | to give up on the trace run. */ | |
13382 | error (_("Target does not support static tracepoints")); | |
13383 | } | |
13384 | /* If the tracepoint has a conditional, make it into an agent | |
13385 | expression and append to the definition. */ | |
13386 | if (loc->cond) | |
13387 | { | |
13388 | /* Only test support at download time, we may not know target | |
13389 | capabilities at definition time. */ | |
13390 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 13391 | { |
3df3a985 PFC |
13392 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, |
13393 | loc->cond.get ()); | |
13394 | ||
13395 | size_left = buf.size () - strlen (buf.data ()); | |
13396 | ||
13397 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
6f96f485 | 13398 | size_left, ":X%x,", (int) aexpr->buf.size ()); |
3df3a985 PFC |
13399 | |
13400 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13401 | error ("%s", err_msg); |
3df3a985 PFC |
13402 | |
13403 | size_left = buf.size () - strlen (buf.data ()); | |
13404 | ||
13405 | /* Two bytes to encode each aexpr byte, plus the terminating | |
13406 | null byte. */ | |
6f96f485 | 13407 | if (aexpr->buf.size () * 2 + 1 > size_left) |
a7f25a84 | 13408 | error ("%s", err_msg); |
3df3a985 PFC |
13409 | |
13410 | pkt = buf.data () + strlen (buf.data ()); | |
13411 | ||
6f96f485 | 13412 | for (int ndx = 0; ndx < aexpr->buf.size (); ++ndx) |
e8ba3115 YQ |
13413 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
13414 | *pkt = '\0'; | |
35b1e5cc | 13415 | } |
e8ba3115 YQ |
13416 | else |
13417 | warning (_("Target does not support conditional tracepoints, " | |
13418 | "ignoring tp %d cond"), b->number); | |
13419 | } | |
35b1e5cc | 13420 | |
e0700ba4 | 13421 | if (b->commands || !default_collect.empty ()) |
3df3a985 PFC |
13422 | { |
13423 | size_left = buf.size () - strlen (buf.data ()); | |
13424 | ||
13425 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13426 | size_left, "-"); | |
13427 | ||
13428 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13429 | error ("%s", err_msg); |
3df3a985 PFC |
13430 | } |
13431 | ||
13432 | putpkt (buf.data ()); | |
b6bb3468 | 13433 | remote_get_noisy_reply (); |
8d64371b | 13434 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13435 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 13436 | |
e8ba3115 | 13437 | /* do_single_steps (t); */ |
b44ec619 SM |
13438 | for (auto action_it = tdp_actions.begin (); |
13439 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 13440 | { |
b44ec619 SM |
13441 | QUIT; /* Allow user to bail out with ^C. */ |
13442 | ||
aa6f3694 | 13443 | bool has_more = ((action_it + 1) != tdp_actions.end () |
b44ec619 SM |
13444 | || !stepping_actions.empty ()); |
13445 | ||
3df3a985 PFC |
13446 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c", |
13447 | b->number, addrbuf, /* address */ | |
13448 | action_it->c_str (), | |
13449 | has_more ? '-' : 0); | |
13450 | ||
13451 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13452 | error ("%s", err_msg); |
3df3a985 PFC |
13453 | |
13454 | putpkt (buf.data ()); | |
b44ec619 | 13455 | remote_get_noisy_reply (); |
8d64371b | 13456 | if (strcmp (rs->buf.data (), "OK")) |
b44ec619 | 13457 | error (_("Error on target while setting tracepoints.")); |
e8ba3115 | 13458 | } |
409873ef | 13459 | |
05abfc39 PFC |
13460 | for (auto action_it = stepping_actions.begin (); |
13461 | action_it != stepping_actions.end (); action_it++) | |
13462 | { | |
13463 | QUIT; /* Allow user to bail out with ^C. */ | |
13464 | ||
13465 | bool is_first = action_it == stepping_actions.begin (); | |
aa6f3694 | 13466 | bool has_more = (action_it + 1) != stepping_actions.end (); |
05abfc39 | 13467 | |
3df3a985 PFC |
13468 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s", |
13469 | b->number, addrbuf, /* address */ | |
13470 | is_first ? "S" : "", | |
13471 | action_it->c_str (), | |
13472 | has_more ? "-" : ""); | |
13473 | ||
13474 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13475 | error ("%s", err_msg); |
3df3a985 PFC |
13476 | |
13477 | putpkt (buf.data ()); | |
05abfc39 | 13478 | remote_get_noisy_reply (); |
8d64371b | 13479 | if (strcmp (rs->buf.data (), "OK")) |
05abfc39 PFC |
13480 | error (_("Error on target while setting tracepoints.")); |
13481 | } | |
b44ec619 | 13482 | |
ff52c073 | 13483 | if (m_features.packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 13484 | { |
264f9890 | 13485 | if (b->locspec != nullptr) |
409873ef | 13486 | { |
3df3a985 PFC |
13487 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13488 | ||
13489 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13490 | error ("%s", err_msg); |
3df3a985 | 13491 | |
709438c7 | 13492 | const char *str = b->locspec->to_string (); |
264f9890 | 13493 | encode_source_string (b->number, loc->address, "at", str, |
3df3a985 PFC |
13494 | buf.data () + strlen (buf.data ()), |
13495 | buf.size () - strlen (buf.data ())); | |
13496 | putpkt (buf.data ()); | |
b6bb3468 | 13497 | remote_get_noisy_reply (); |
8d64371b | 13498 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13499 | warning (_("Target does not support source download.")); |
409873ef | 13500 | } |
e8ba3115 YQ |
13501 | if (b->cond_string) |
13502 | { | |
3df3a985 PFC |
13503 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13504 | ||
13505 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13506 | error ("%s", err_msg); |
3df3a985 | 13507 | |
e8ba3115 | 13508 | encode_source_string (b->number, loc->address, |
6f781ee3 | 13509 | "cond", b->cond_string.get (), |
3df3a985 PFC |
13510 | buf.data () + strlen (buf.data ()), |
13511 | buf.size () - strlen (buf.data ())); | |
13512 | putpkt (buf.data ()); | |
b6bb3468 | 13513 | remote_get_noisy_reply (); |
8d64371b | 13514 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 YQ |
13515 | warning (_("Target does not support source download.")); |
13516 | } | |
13517 | remote_download_command_source (b->number, loc->address, | |
13518 | breakpoint_commands (b)); | |
35b1e5cc | 13519 | } |
35b1e5cc SS |
13520 | } |
13521 | ||
57810aa7 | 13522 | bool |
f6ac5f3d | 13523 | remote_target::can_download_tracepoint () |
1e4d1764 | 13524 | { |
1e51243a PA |
13525 | struct remote_state *rs = get_remote_state (); |
13526 | struct trace_status *ts; | |
13527 | int status; | |
13528 | ||
13529 | /* Don't try to install tracepoints until we've relocated our | |
13530 | symbols, and fetched and merged the target's tracepoint list with | |
13531 | ours. */ | |
13532 | if (rs->starting_up) | |
57810aa7 | 13533 | return false; |
1e51243a PA |
13534 | |
13535 | ts = current_trace_status (); | |
f6ac5f3d | 13536 | status = get_trace_status (ts); |
1e4d1764 YQ |
13537 | |
13538 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 13539 | return false; |
1e4d1764 YQ |
13540 | |
13541 | /* If we are in a tracing experiment, but remote stub doesn't support | |
13542 | installing tracepoint in trace, we have to return. */ | |
13543 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 13544 | return false; |
1e4d1764 | 13545 | |
57810aa7 | 13546 | return true; |
1e4d1764 YQ |
13547 | } |
13548 | ||
13549 | ||
f6ac5f3d PA |
13550 | void |
13551 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
13552 | { |
13553 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 13554 | char *p; |
35b1e5cc | 13555 | |
8d64371b | 13556 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
13557 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
13558 | tsv.builtin); | |
8d64371b TT |
13559 | p = rs->buf.data () + strlen (rs->buf.data ()); |
13560 | if ((p - rs->buf.data ()) + tsv.name.length () * 2 | |
13561 | >= get_remote_packet_size ()) | |
00bf0b85 | 13562 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 13563 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 13564 | *p++ = '\0'; |
35b1e5cc | 13565 | putpkt (rs->buf); |
b6bb3468 | 13566 | remote_get_noisy_reply (); |
8d64371b | 13567 | if (rs->buf[0] == '\0') |
ad91cd99 | 13568 | error (_("Target does not support this command.")); |
8d64371b | 13569 | if (strcmp (rs->buf.data (), "OK") != 0) |
ad91cd99 | 13570 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13571 | } |
13572 | ||
f6ac5f3d PA |
13573 | void |
13574 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13575 | { |
13576 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13577 | |
8d64371b | 13578 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTEnable:%x:%s", |
53807e9f TT |
13579 | location->owner->number, |
13580 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13581 | putpkt (rs->buf); |
b6bb3468 | 13582 | remote_get_noisy_reply (); |
8d64371b | 13583 | if (rs->buf[0] == '\0') |
d248b706 | 13584 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13585 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13586 | error (_("Error on target while enabling tracepoint.")); |
13587 | } | |
13588 | ||
f6ac5f3d PA |
13589 | void |
13590 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13591 | { |
13592 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13593 | |
8d64371b | 13594 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDisable:%x:%s", |
53807e9f TT |
13595 | location->owner->number, |
13596 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13597 | putpkt (rs->buf); |
b6bb3468 | 13598 | remote_get_noisy_reply (); |
8d64371b | 13599 | if (rs->buf[0] == '\0') |
d248b706 | 13600 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13601 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13602 | error (_("Error on target while disabling tracepoint.")); |
13603 | } | |
13604 | ||
f6ac5f3d PA |
13605 | void |
13606 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13607 | { |
13608 | asection *s; | |
13609 | bfd_size_type size; | |
608bcef2 | 13610 | bfd_vma vma; |
35b1e5cc | 13611 | int anysecs = 0; |
c2fa21f1 | 13612 | int offset = 0; |
f493c217 | 13613 | bfd *abfd = current_program_space->exec_bfd (); |
35b1e5cc | 13614 | |
f493c217 | 13615 | if (!abfd) |
35b1e5cc SS |
13616 | return; /* No information to give. */ |
13617 | ||
b6bb3468 PA |
13618 | struct remote_state *rs = get_remote_state (); |
13619 | ||
8d64371b TT |
13620 | strcpy (rs->buf.data (), "QTro"); |
13621 | offset = strlen (rs->buf.data ()); | |
f493c217 | 13622 | for (s = abfd->sections; s; s = s->next) |
35b1e5cc SS |
13623 | { |
13624 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13625 | int sec_length; |
35b1e5cc | 13626 | |
f493c217 AM |
13627 | if ((s->flags & SEC_LOAD) == 0 |
13628 | /* || (s->flags & SEC_CODE) == 0 */ | |
13629 | || (s->flags & SEC_READONLY) == 0) | |
35b1e5cc SS |
13630 | continue; |
13631 | ||
13632 | anysecs = 1; | |
fd361982 AM |
13633 | vma = bfd_section_vma (s); |
13634 | size = bfd_section_size (s); | |
f493c217 AM |
13635 | bfd_sprintf_vma (abfd, tmp1, vma); |
13636 | bfd_sprintf_vma (abfd, tmp2, vma + size); | |
c2fa21f1 | 13637 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
8d64371b | 13638 | if (offset + sec_length + 1 > rs->buf.size ()) |
c2fa21f1 | 13639 | { |
ff52c073 CS |
13640 | if (m_features.packet_support (PACKET_qXfer_traceframe_info) |
13641 | != PACKET_ENABLE) | |
864ac8a7 | 13642 | warning (_("\ |
c2fa21f1 HZ |
13643 | Too many sections for read-only sections definition packet.")); |
13644 | break; | |
13645 | } | |
8d64371b | 13646 | xsnprintf (rs->buf.data () + offset, rs->buf.size () - offset, ":%s,%s", |
bba74b36 | 13647 | tmp1, tmp2); |
c2fa21f1 | 13648 | offset += sec_length; |
35b1e5cc SS |
13649 | } |
13650 | if (anysecs) | |
13651 | { | |
b6bb3468 | 13652 | putpkt (rs->buf); |
aa7b36b8 | 13653 | getpkt (&rs->buf); |
35b1e5cc SS |
13654 | } |
13655 | } | |
13656 | ||
f6ac5f3d PA |
13657 | void |
13658 | remote_target::trace_start () | |
35b1e5cc | 13659 | { |
b6bb3468 PA |
13660 | struct remote_state *rs = get_remote_state (); |
13661 | ||
35b1e5cc | 13662 | putpkt ("QTStart"); |
b6bb3468 | 13663 | remote_get_noisy_reply (); |
8d64371b | 13664 | if (rs->buf[0] == '\0') |
ad91cd99 | 13665 | error (_("Target does not support this command.")); |
8d64371b TT |
13666 | if (strcmp (rs->buf.data (), "OK") != 0) |
13667 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13668 | } |
13669 | ||
f6ac5f3d PA |
13670 | int |
13671 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13672 | { |
953b98d1 | 13673 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13674 | char *p = NULL; |
bd3eecc3 | 13675 | enum packet_result result; |
b6bb3468 | 13676 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13677 | |
ff52c073 | 13678 | if (m_features.packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13679 | return -1; |
a744cf53 | 13680 | |
7b9a15e1 | 13681 | /* FIXME we need to get register block size some other way. */ |
5cd63fda | 13682 | trace_regblock_size |
99d9c3b9 | 13683 | = rs->get_remote_arch_state (current_inferior ()->arch ())->sizeof_g_packet; |
00bf0b85 | 13684 | |
049dc89b JK |
13685 | putpkt ("qTStatus"); |
13686 | ||
a70b8144 | 13687 | try |
67f41397 | 13688 | { |
b6bb3468 | 13689 | p = remote_get_noisy_reply (); |
67f41397 | 13690 | } |
230d2906 | 13691 | catch (const gdb_exception_error &ex) |
67f41397 | 13692 | { |
598d3636 JK |
13693 | if (ex.error != TARGET_CLOSE_ERROR) |
13694 | { | |
13695 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13696 | return -1; | |
13697 | } | |
eedc3f4f | 13698 | throw; |
67f41397 | 13699 | } |
00bf0b85 | 13700 | |
ff52c073 | 13701 | result = m_features.packet_ok (p, PACKET_qTStatus); |
bd3eecc3 | 13702 | |
00bf0b85 | 13703 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13704 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13705 | return -1; |
35b1e5cc | 13706 | |
00bf0b85 | 13707 | /* We're working with a live target. */ |
f5911ea1 | 13708 | ts->filename = NULL; |
00bf0b85 | 13709 | |
00bf0b85 | 13710 | if (*p++ != 'T') |
8d64371b | 13711 | error (_("Bogus trace status reply from target: %s"), rs->buf.data ()); |
35b1e5cc | 13712 | |
84cebc4a YQ |
13713 | /* Function 'parse_trace_status' sets default value of each field of |
13714 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13715 | parse_trace_status (p, ts); |
13716 | ||
13717 | return ts->running; | |
35b1e5cc SS |
13718 | } |
13719 | ||
f6ac5f3d | 13720 | void |
01bccc56 | 13721 | remote_target::get_tracepoint_status (tracepoint *tp, |
f6ac5f3d | 13722 | struct uploaded_tp *utp) |
f196051f SS |
13723 | { |
13724 | struct remote_state *rs = get_remote_state (); | |
f196051f | 13725 | char *reply; |
bba74b36 | 13726 | size_t size = get_remote_packet_size (); |
f196051f SS |
13727 | |
13728 | if (tp) | |
13729 | { | |
c1fc2657 | 13730 | tp->hit_count = 0; |
f196051f | 13731 | tp->traceframe_usage = 0; |
b00b30b2 | 13732 | for (bp_location &loc : tp->locations ()) |
f196051f SS |
13733 | { |
13734 | /* If the tracepoint was never downloaded, don't go asking for | |
13735 | any status. */ | |
13736 | if (tp->number_on_target == 0) | |
13737 | continue; | |
8d64371b | 13738 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", tp->number_on_target, |
b00b30b2 | 13739 | phex_nz (loc.address, 0)); |
f196051f | 13740 | putpkt (rs->buf); |
b6bb3468 | 13741 | reply = remote_get_noisy_reply (); |
f196051f SS |
13742 | if (reply && *reply) |
13743 | { | |
13744 | if (*reply == 'V') | |
01bccc56 | 13745 | parse_tracepoint_status (reply + 1, tp, utp); |
f196051f SS |
13746 | } |
13747 | } | |
13748 | } | |
13749 | else if (utp) | |
13750 | { | |
13751 | utp->hit_count = 0; | |
13752 | utp->traceframe_usage = 0; | |
8d64371b | 13753 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", utp->number, |
bba74b36 | 13754 | phex_nz (utp->addr, 0)); |
f196051f | 13755 | putpkt (rs->buf); |
b6bb3468 | 13756 | reply = remote_get_noisy_reply (); |
f196051f SS |
13757 | if (reply && *reply) |
13758 | { | |
13759 | if (*reply == 'V') | |
01bccc56 | 13760 | parse_tracepoint_status (reply + 1, tp, utp); |
f196051f SS |
13761 | } |
13762 | } | |
13763 | } | |
13764 | ||
f6ac5f3d PA |
13765 | void |
13766 | remote_target::trace_stop () | |
35b1e5cc | 13767 | { |
b6bb3468 PA |
13768 | struct remote_state *rs = get_remote_state (); |
13769 | ||
35b1e5cc | 13770 | putpkt ("QTStop"); |
b6bb3468 | 13771 | remote_get_noisy_reply (); |
8d64371b | 13772 | if (rs->buf[0] == '\0') |
ad91cd99 | 13773 | error (_("Target does not support this command.")); |
8d64371b TT |
13774 | if (strcmp (rs->buf.data (), "OK") != 0) |
13775 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13776 | } |
13777 | ||
f6ac5f3d PA |
13778 | int |
13779 | remote_target::trace_find (enum trace_find_type type, int num, | |
13780 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13781 | int *tpp) | |
35b1e5cc SS |
13782 | { |
13783 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 13784 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
35b1e5cc SS |
13785 | char *p, *reply; |
13786 | int target_frameno = -1, target_tracept = -1; | |
13787 | ||
e6e4e701 PA |
13788 | /* Lookups other than by absolute frame number depend on the current |
13789 | trace selected, so make sure it is correct on the remote end | |
13790 | first. */ | |
13791 | if (type != tfind_number) | |
13792 | set_remote_traceframe (); | |
13793 | ||
8d64371b | 13794 | p = rs->buf.data (); |
35b1e5cc SS |
13795 | strcpy (p, "QTFrame:"); |
13796 | p = strchr (p, '\0'); | |
13797 | switch (type) | |
13798 | { | |
13799 | case tfind_number: | |
bba74b36 | 13800 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13801 | break; |
13802 | case tfind_pc: | |
bba74b36 | 13803 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13804 | break; |
13805 | case tfind_tp: | |
bba74b36 | 13806 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13807 | break; |
13808 | case tfind_range: | |
bba74b36 YQ |
13809 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13810 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13811 | break; |
13812 | case tfind_outside: | |
bba74b36 YQ |
13813 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13814 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13815 | break; |
13816 | default: | |
9b20d036 | 13817 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13818 | } |
13819 | ||
13820 | putpkt (rs->buf); | |
b6bb3468 | 13821 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13822 | if (*reply == '\0') |
13823 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13824 | |
13825 | while (reply && *reply) | |
13826 | switch (*reply) | |
13827 | { | |
13828 | case 'F': | |
f197e0f1 VP |
13829 | p = ++reply; |
13830 | target_frameno = (int) strtol (p, &reply, 16); | |
13831 | if (reply == p) | |
13832 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13833 | /* Don't update our remote traceframe number cache on failure |
13834 | to select a remote traceframe. */ | |
f197e0f1 VP |
13835 | if (target_frameno == -1) |
13836 | return -1; | |
35b1e5cc SS |
13837 | break; |
13838 | case 'T': | |
f197e0f1 VP |
13839 | p = ++reply; |
13840 | target_tracept = (int) strtol (p, &reply, 16); | |
13841 | if (reply == p) | |
13842 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13843 | break; |
13844 | case 'O': /* "OK"? */ | |
13845 | if (reply[1] == 'K' && reply[2] == '\0') | |
13846 | reply += 2; | |
13847 | else | |
13848 | error (_("Bogus reply from target: %s"), reply); | |
13849 | break; | |
13850 | default: | |
13851 | error (_("Bogus reply from target: %s"), reply); | |
13852 | } | |
13853 | if (tpp) | |
13854 | *tpp = target_tracept; | |
e6e4e701 | 13855 | |
262e1174 | 13856 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13857 | return target_frameno; |
13858 | } | |
13859 | ||
57810aa7 | 13860 | bool |
f6ac5f3d | 13861 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13862 | { |
13863 | struct remote_state *rs = get_remote_state (); | |
13864 | char *reply; | |
13865 | ULONGEST uval; | |
13866 | ||
e6e4e701 PA |
13867 | set_remote_traceframe (); |
13868 | ||
8d64371b | 13869 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13870 | putpkt (rs->buf); |
b6bb3468 | 13871 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13872 | if (reply && *reply) |
13873 | { | |
13874 | if (*reply == 'V') | |
13875 | { | |
13876 | unpack_varlen_hex (reply + 1, &uval); | |
13877 | *val = (LONGEST) uval; | |
57810aa7 | 13878 | return true; |
35b1e5cc SS |
13879 | } |
13880 | } | |
57810aa7 | 13881 | return false; |
35b1e5cc SS |
13882 | } |
13883 | ||
f6ac5f3d PA |
13884 | int |
13885 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13886 | { |
13887 | struct remote_state *rs = get_remote_state (); | |
13888 | char *p, *reply; | |
13889 | ||
8d64371b | 13890 | p = rs->buf.data (); |
00bf0b85 SS |
13891 | strcpy (p, "QTSave:"); |
13892 | p += strlen (p); | |
8d64371b TT |
13893 | if ((p - rs->buf.data ()) + strlen (filename) * 2 |
13894 | >= get_remote_packet_size ()) | |
00bf0b85 | 13895 | error (_("Remote file name too long for trace save packet")); |
9f1b45b0 | 13896 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13897 | *p++ = '\0'; |
13898 | putpkt (rs->buf); | |
b6bb3468 | 13899 | reply = remote_get_noisy_reply (); |
d6c5869f | 13900 | if (*reply == '\0') |
ad91cd99 PA |
13901 | error (_("Target does not support this command.")); |
13902 | if (strcmp (reply, "OK") != 0) | |
13903 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13904 | return 0; |
13905 | } | |
13906 | ||
13907 | /* This is basically a memory transfer, but needs to be its own packet | |
13908 | because we don't know how the target actually organizes its trace | |
13909 | memory, plus we want to be able to ask for as much as possible, but | |
13910 | not be unhappy if we don't get as much as we ask for. */ | |
13911 | ||
f6ac5f3d PA |
13912 | LONGEST |
13913 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13914 | { |
13915 | struct remote_state *rs = get_remote_state (); | |
13916 | char *reply; | |
13917 | char *p; | |
13918 | int rslt; | |
13919 | ||
8d64371b | 13920 | p = rs->buf.data (); |
00bf0b85 SS |
13921 | strcpy (p, "qTBuffer:"); |
13922 | p += strlen (p); | |
13923 | p += hexnumstr (p, offset); | |
13924 | *p++ = ','; | |
13925 | p += hexnumstr (p, len); | |
13926 | *p++ = '\0'; | |
13927 | ||
13928 | putpkt (rs->buf); | |
b6bb3468 | 13929 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13930 | if (reply && *reply) |
13931 | { | |
13932 | /* 'l' by itself means we're at the end of the buffer and | |
13933 | there is nothing more to get. */ | |
13934 | if (*reply == 'l') | |
13935 | return 0; | |
13936 | ||
13937 | /* Convert the reply into binary. Limit the number of bytes to | |
13938 | convert according to our passed-in buffer size, rather than | |
13939 | what was returned in the packet; if the target is | |
13940 | unexpectedly generous and gives us a bigger reply than we | |
13941 | asked for, we don't want to crash. */ | |
b6bb3468 | 13942 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13943 | return rslt; |
13944 | } | |
13945 | ||
13946 | /* Something went wrong, flag as an error. */ | |
13947 | return -1; | |
13948 | } | |
13949 | ||
f6ac5f3d PA |
13950 | void |
13951 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13952 | { |
13953 | struct remote_state *rs = get_remote_state (); | |
13954 | ||
ff52c073 CS |
13955 | if (m_features.packet_support (PACKET_DisconnectedTracing_feature) |
13956 | == PACKET_ENABLE) | |
33da3f1c | 13957 | { |
ad91cd99 PA |
13958 | char *reply; |
13959 | ||
8d64371b TT |
13960 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13961 | "QTDisconnected:%x", val); | |
33da3f1c | 13962 | putpkt (rs->buf); |
b6bb3468 | 13963 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13964 | if (*reply == '\0') |
33da3f1c | 13965 | error (_("Target does not support this command.")); |
ad91cd99 | 13966 | if (strcmp (reply, "OK") != 0) |
dda83cd7 | 13967 | error (_("Bogus reply from target: %s"), reply); |
33da3f1c SS |
13968 | } |
13969 | else if (val) | |
13970 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13971 | } |
13972 | ||
f6ac5f3d PA |
13973 | int |
13974 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c | 13975 | { |
9213a6d7 | 13976 | thread_info *info = this->find_thread (ptid); |
a744cf53 | 13977 | |
7aabaf9d SM |
13978 | if (info != NULL && info->priv != NULL) |
13979 | return get_remote_thread_info (info)->core; | |
13980 | ||
dc146f7c VP |
13981 | return -1; |
13982 | } | |
13983 | ||
f6ac5f3d PA |
13984 | void |
13985 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13986 | { |
13987 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13988 | char *reply; |
4daf5ac0 | 13989 | |
8d64371b TT |
13990 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13991 | "QTBuffer:circular:%x", val); | |
4daf5ac0 | 13992 | putpkt (rs->buf); |
b6bb3468 | 13993 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13994 | if (*reply == '\0') |
4daf5ac0 | 13995 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13996 | if (strcmp (reply, "OK") != 0) |
13997 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13998 | } |
13999 | ||
f6ac5f3d PA |
14000 | traceframe_info_up |
14001 | remote_target::traceframe_info () | |
b3b9301e | 14002 | { |
9018be22 | 14003 | gdb::optional<gdb::char_vector> text |
328d42d8 SM |
14004 | = target_read_stralloc (current_inferior ()->top_target (), |
14005 | TARGET_OBJECT_TRACEFRAME_INFO, | |
b7b030ad | 14006 | NULL); |
9018be22 SM |
14007 | if (text) |
14008 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
14009 | |
14010 | return NULL; | |
14011 | } | |
14012 | ||
405f8e94 SS |
14013 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
14014 | instruction on which a fast tracepoint may be placed. Returns -1 | |
14015 | if the packet is not supported, and 0 if the minimum instruction | |
14016 | length is unknown. */ | |
14017 | ||
f6ac5f3d PA |
14018 | int |
14019 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
14020 | { |
14021 | struct remote_state *rs = get_remote_state (); | |
14022 | char *reply; | |
14023 | ||
e886a173 PA |
14024 | /* If we're not debugging a process yet, the IPA can't be |
14025 | loaded. */ | |
55f6301a | 14026 | if (!target_has_execution ()) |
e886a173 PA |
14027 | return 0; |
14028 | ||
14029 | /* Make sure the remote is pointing at the right process. */ | |
14030 | set_general_process (); | |
14031 | ||
8d64371b | 14032 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 14033 | putpkt (rs->buf); |
b6bb3468 | 14034 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
14035 | if (*reply == '\0') |
14036 | return -1; | |
14037 | else | |
14038 | { | |
14039 | ULONGEST min_insn_len; | |
14040 | ||
14041 | unpack_varlen_hex (reply, &min_insn_len); | |
14042 | ||
14043 | return (int) min_insn_len; | |
14044 | } | |
14045 | } | |
14046 | ||
f6ac5f3d PA |
14047 | void |
14048 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 14049 | { |
ff52c073 | 14050 | if (m_features.packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
14051 | { |
14052 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
14053 | char *buf = rs->buf.data (); |
14054 | char *endbuf = buf + get_remote_packet_size (); | |
f6f899bf HAQ |
14055 | enum packet_result result; |
14056 | ||
14057 | gdb_assert (val >= 0 || val == -1); | |
14058 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
14059 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
14060 | if (val < 0) | |
14061 | { | |
14062 | *buf++ = '-'; | |
dda83cd7 | 14063 | buf += hexnumstr (buf, (ULONGEST) -val); |
f6f899bf HAQ |
14064 | } |
14065 | else | |
14066 | buf += hexnumstr (buf, (ULONGEST) val); | |
14067 | ||
14068 | putpkt (rs->buf); | |
b6bb3468 | 14069 | remote_get_noisy_reply (); |
ff52c073 | 14070 | result = m_features.packet_ok (rs->buf, PACKET_QTBuffer_size); |
f6f899bf HAQ |
14071 | |
14072 | if (result != PACKET_OK) | |
8d64371b | 14073 | warning (_("Bogus reply from target: %s"), rs->buf.data ()); |
f6f899bf HAQ |
14074 | } |
14075 | } | |
14076 | ||
57810aa7 | 14077 | bool |
f6ac5f3d PA |
14078 | remote_target::set_trace_notes (const char *user, const char *notes, |
14079 | const char *stop_notes) | |
f196051f SS |
14080 | { |
14081 | struct remote_state *rs = get_remote_state (); | |
14082 | char *reply; | |
8d64371b TT |
14083 | char *buf = rs->buf.data (); |
14084 | char *endbuf = buf + get_remote_packet_size (); | |
f196051f SS |
14085 | int nbytes; |
14086 | ||
14087 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
14088 | if (user) | |
14089 | { | |
14090 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 14091 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
14092 | buf += 2 * nbytes; |
14093 | *buf++ = ';'; | |
14094 | } | |
14095 | if (notes) | |
14096 | { | |
14097 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 14098 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
14099 | buf += 2 * nbytes; |
14100 | *buf++ = ';'; | |
14101 | } | |
14102 | if (stop_notes) | |
14103 | { | |
14104 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 14105 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
14106 | buf += 2 * nbytes; |
14107 | *buf++ = ';'; | |
14108 | } | |
14109 | /* Ensure the buffer is terminated. */ | |
14110 | *buf = '\0'; | |
14111 | ||
14112 | putpkt (rs->buf); | |
b6bb3468 | 14113 | reply = remote_get_noisy_reply (); |
f196051f | 14114 | if (*reply == '\0') |
57810aa7 | 14115 | return false; |
f196051f SS |
14116 | |
14117 | if (strcmp (reply, "OK") != 0) | |
14118 | error (_("Bogus reply from target: %s"), reply); | |
14119 | ||
57810aa7 | 14120 | return true; |
f196051f SS |
14121 | } |
14122 | ||
57810aa7 PA |
14123 | bool |
14124 | remote_target::use_agent (bool use) | |
d1feda86 | 14125 | { |
ff52c073 | 14126 | if (m_features.packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
14127 | { |
14128 | struct remote_state *rs = get_remote_state (); | |
14129 | ||
14130 | /* If the stub supports QAgent. */ | |
8d64371b | 14131 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 | 14132 | putpkt (rs->buf); |
aa7b36b8 | 14133 | getpkt (&rs->buf); |
d1feda86 | 14134 | |
8d64371b | 14135 | if (strcmp (rs->buf.data (), "OK") == 0) |
d1feda86 | 14136 | { |
f6ac5f3d | 14137 | ::use_agent = use; |
57810aa7 | 14138 | return true; |
d1feda86 YQ |
14139 | } |
14140 | } | |
14141 | ||
57810aa7 | 14142 | return false; |
d1feda86 YQ |
14143 | } |
14144 | ||
57810aa7 | 14145 | bool |
f6ac5f3d | 14146 | remote_target::can_use_agent () |
d1feda86 | 14147 | { |
ff52c073 | 14148 | return (m_features.packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
14149 | } |
14150 | ||
1bcb9dcf MM |
14151 | #if defined (HAVE_LIBEXPAT) |
14152 | ||
14153 | /* Check the btrace document version. */ | |
14154 | ||
14155 | static void | |
14156 | check_xml_btrace_version (struct gdb_xml_parser *parser, | |
14157 | const struct gdb_xml_element *element, | |
14158 | void *user_data, | |
14159 | std::vector<gdb_xml_value> &attributes) | |
14160 | { | |
14161 | const char *version | |
14162 | = (const char *) xml_find_attribute (attributes, "version")->value.get (); | |
14163 | ||
14164 | if (strcmp (version, "1.0") != 0) | |
14165 | gdb_xml_error (parser, _("Unsupported btrace version: \"%s\""), version); | |
14166 | } | |
14167 | ||
14168 | /* Parse a btrace "block" xml record. */ | |
14169 | ||
14170 | static void | |
14171 | parse_xml_btrace_block (struct gdb_xml_parser *parser, | |
14172 | const struct gdb_xml_element *element, | |
14173 | void *user_data, | |
14174 | std::vector<gdb_xml_value> &attributes) | |
14175 | { | |
14176 | struct btrace_data *btrace; | |
14177 | ULONGEST *begin, *end; | |
14178 | ||
14179 | btrace = (struct btrace_data *) user_data; | |
14180 | ||
14181 | switch (btrace->format) | |
14182 | { | |
14183 | case BTRACE_FORMAT_BTS: | |
14184 | break; | |
14185 | ||
14186 | case BTRACE_FORMAT_NONE: | |
14187 | btrace->format = BTRACE_FORMAT_BTS; | |
14188 | btrace->variant.bts.blocks = new std::vector<btrace_block>; | |
14189 | break; | |
14190 | ||
14191 | default: | |
14192 | gdb_xml_error (parser, _("Btrace format error.")); | |
14193 | } | |
14194 | ||
14195 | begin = (ULONGEST *) xml_find_attribute (attributes, "begin")->value.get (); | |
14196 | end = (ULONGEST *) xml_find_attribute (attributes, "end")->value.get (); | |
14197 | btrace->variant.bts.blocks->emplace_back (*begin, *end); | |
14198 | } | |
14199 | ||
14200 | /* Parse a "raw" xml record. */ | |
14201 | ||
14202 | static void | |
14203 | parse_xml_raw (struct gdb_xml_parser *parser, const char *body_text, | |
14204 | gdb_byte **pdata, size_t *psize) | |
14205 | { | |
14206 | gdb_byte *bin; | |
14207 | size_t len, size; | |
14208 | ||
14209 | len = strlen (body_text); | |
14210 | if (len % 2 != 0) | |
14211 | gdb_xml_error (parser, _("Bad raw data size.")); | |
14212 | ||
14213 | size = len / 2; | |
14214 | ||
14215 | gdb::unique_xmalloc_ptr<gdb_byte> data ((gdb_byte *) xmalloc (size)); | |
14216 | bin = data.get (); | |
14217 | ||
14218 | /* We use hex encoding - see gdbsupport/rsp-low.h. */ | |
14219 | while (len > 0) | |
14220 | { | |
14221 | char hi, lo; | |
14222 | ||
14223 | hi = *body_text++; | |
14224 | lo = *body_text++; | |
14225 | ||
14226 | if (hi == 0 || lo == 0) | |
14227 | gdb_xml_error (parser, _("Bad hex encoding.")); | |
14228 | ||
14229 | *bin++ = fromhex (hi) * 16 + fromhex (lo); | |
14230 | len -= 2; | |
14231 | } | |
14232 | ||
14233 | *pdata = data.release (); | |
14234 | *psize = size; | |
14235 | } | |
14236 | ||
14237 | /* Parse a btrace pt-config "cpu" xml record. */ | |
14238 | ||
14239 | static void | |
14240 | parse_xml_btrace_pt_config_cpu (struct gdb_xml_parser *parser, | |
14241 | const struct gdb_xml_element *element, | |
14242 | void *user_data, | |
14243 | std::vector<gdb_xml_value> &attributes) | |
14244 | { | |
14245 | struct btrace_data *btrace; | |
14246 | const char *vendor; | |
14247 | ULONGEST *family, *model, *stepping; | |
14248 | ||
14249 | vendor | |
14250 | = (const char *) xml_find_attribute (attributes, "vendor")->value.get (); | |
14251 | family | |
14252 | = (ULONGEST *) xml_find_attribute (attributes, "family")->value.get (); | |
14253 | model | |
14254 | = (ULONGEST *) xml_find_attribute (attributes, "model")->value.get (); | |
14255 | stepping | |
14256 | = (ULONGEST *) xml_find_attribute (attributes, "stepping")->value.get (); | |
14257 | ||
14258 | btrace = (struct btrace_data *) user_data; | |
14259 | ||
14260 | if (strcmp (vendor, "GenuineIntel") == 0) | |
14261 | btrace->variant.pt.config.cpu.vendor = CV_INTEL; | |
14262 | ||
14263 | btrace->variant.pt.config.cpu.family = *family; | |
14264 | btrace->variant.pt.config.cpu.model = *model; | |
14265 | btrace->variant.pt.config.cpu.stepping = *stepping; | |
14266 | } | |
14267 | ||
14268 | /* Parse a btrace pt "raw" xml record. */ | |
14269 | ||
14270 | static void | |
14271 | parse_xml_btrace_pt_raw (struct gdb_xml_parser *parser, | |
14272 | const struct gdb_xml_element *element, | |
14273 | void *user_data, const char *body_text) | |
14274 | { | |
14275 | struct btrace_data *btrace; | |
14276 | ||
14277 | btrace = (struct btrace_data *) user_data; | |
14278 | parse_xml_raw (parser, body_text, &btrace->variant.pt.data, | |
14279 | &btrace->variant.pt.size); | |
14280 | } | |
14281 | ||
14282 | /* Parse a btrace "pt" xml record. */ | |
14283 | ||
14284 | static void | |
14285 | parse_xml_btrace_pt (struct gdb_xml_parser *parser, | |
14286 | const struct gdb_xml_element *element, | |
14287 | void *user_data, | |
14288 | std::vector<gdb_xml_value> &attributes) | |
14289 | { | |
14290 | struct btrace_data *btrace; | |
14291 | ||
14292 | btrace = (struct btrace_data *) user_data; | |
14293 | btrace->format = BTRACE_FORMAT_PT; | |
14294 | btrace->variant.pt.config.cpu.vendor = CV_UNKNOWN; | |
14295 | btrace->variant.pt.data = NULL; | |
14296 | btrace->variant.pt.size = 0; | |
14297 | } | |
14298 | ||
14299 | static const struct gdb_xml_attribute block_attributes[] = { | |
14300 | { "begin", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL }, | |
14301 | { "end", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL }, | |
14302 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
14303 | }; | |
14304 | ||
14305 | static const struct gdb_xml_attribute btrace_pt_config_cpu_attributes[] = { | |
14306 | { "vendor", GDB_XML_AF_NONE, NULL, NULL }, | |
14307 | { "family", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL }, | |
14308 | { "model", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL }, | |
14309 | { "stepping", GDB_XML_AF_NONE, gdb_xml_parse_attr_ulongest, NULL }, | |
14310 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
14311 | }; | |
14312 | ||
14313 | static const struct gdb_xml_element btrace_pt_config_children[] = { | |
14314 | { "cpu", btrace_pt_config_cpu_attributes, NULL, GDB_XML_EF_OPTIONAL, | |
14315 | parse_xml_btrace_pt_config_cpu, NULL }, | |
14316 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
14317 | }; | |
14318 | ||
14319 | static const struct gdb_xml_element btrace_pt_children[] = { | |
14320 | { "pt-config", NULL, btrace_pt_config_children, GDB_XML_EF_OPTIONAL, NULL, | |
14321 | NULL }, | |
14322 | { "raw", NULL, NULL, GDB_XML_EF_OPTIONAL, NULL, parse_xml_btrace_pt_raw }, | |
14323 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
14324 | }; | |
14325 | ||
14326 | static const struct gdb_xml_attribute btrace_attributes[] = { | |
14327 | { "version", GDB_XML_AF_NONE, NULL, NULL }, | |
14328 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
14329 | }; | |
14330 | ||
14331 | static const struct gdb_xml_element btrace_children[] = { | |
14332 | { "block", block_attributes, NULL, | |
14333 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, parse_xml_btrace_block, NULL }, | |
14334 | { "pt", NULL, btrace_pt_children, GDB_XML_EF_OPTIONAL, parse_xml_btrace_pt, | |
14335 | NULL }, | |
14336 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
14337 | }; | |
14338 | ||
14339 | static const struct gdb_xml_element btrace_elements[] = { | |
14340 | { "btrace", btrace_attributes, btrace_children, GDB_XML_EF_NONE, | |
14341 | check_xml_btrace_version, NULL }, | |
14342 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
14343 | }; | |
14344 | ||
14345 | #endif /* defined (HAVE_LIBEXPAT) */ | |
14346 | ||
14347 | /* Parse a branch trace xml document XML into DATA. */ | |
14348 | ||
14349 | static void | |
14350 | parse_xml_btrace (struct btrace_data *btrace, const char *buffer) | |
14351 | { | |
14352 | #if defined (HAVE_LIBEXPAT) | |
14353 | ||
14354 | int errcode; | |
14355 | btrace_data result; | |
14356 | result.format = BTRACE_FORMAT_NONE; | |
14357 | ||
14358 | errcode = gdb_xml_parse_quick (_("btrace"), "btrace.dtd", btrace_elements, | |
14359 | buffer, &result); | |
14360 | if (errcode != 0) | |
14361 | error (_("Error parsing branch trace.")); | |
14362 | ||
14363 | /* Keep parse results. */ | |
14364 | *btrace = std::move (result); | |
14365 | ||
14366 | #else /* !defined (HAVE_LIBEXPAT) */ | |
14367 | ||
14368 | error (_("Cannot process branch trace. XML support was disabled at " | |
14369 | "compile time.")); | |
14370 | ||
14371 | #endif /* !defined (HAVE_LIBEXPAT) */ | |
14372 | } | |
14373 | ||
14374 | #if defined (HAVE_LIBEXPAT) | |
14375 | ||
14376 | /* Parse a btrace-conf "bts" xml record. */ | |
14377 | ||
14378 | static void | |
14379 | parse_xml_btrace_conf_bts (struct gdb_xml_parser *parser, | |
14380 | const struct gdb_xml_element *element, | |
14381 | void *user_data, | |
14382 | std::vector<gdb_xml_value> &attributes) | |
14383 | { | |
14384 | struct btrace_config *conf; | |
14385 | struct gdb_xml_value *size; | |
14386 | ||
14387 | conf = (struct btrace_config *) user_data; | |
14388 | conf->format = BTRACE_FORMAT_BTS; | |
14389 | conf->bts.size = 0; | |
14390 | ||
14391 | size = xml_find_attribute (attributes, "size"); | |
14392 | if (size != NULL) | |
14393 | conf->bts.size = (unsigned int) *(ULONGEST *) size->value.get (); | |
14394 | } | |
14395 | ||
14396 | /* Parse a btrace-conf "pt" xml record. */ | |
14397 | ||
14398 | static void | |
14399 | parse_xml_btrace_conf_pt (struct gdb_xml_parser *parser, | |
14400 | const struct gdb_xml_element *element, | |
14401 | void *user_data, | |
14402 | std::vector<gdb_xml_value> &attributes) | |
14403 | { | |
14404 | struct btrace_config *conf; | |
14405 | struct gdb_xml_value *size; | |
14406 | ||
14407 | conf = (struct btrace_config *) user_data; | |
14408 | conf->format = BTRACE_FORMAT_PT; | |
14409 | conf->pt.size = 0; | |
14410 | ||
14411 | size = xml_find_attribute (attributes, "size"); | |
14412 | if (size != NULL) | |
14413 | conf->pt.size = (unsigned int) *(ULONGEST *) size->value.get (); | |
14414 | } | |
14415 | ||
14416 | static const struct gdb_xml_attribute btrace_conf_pt_attributes[] = { | |
14417 | { "size", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
14418 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
14419 | }; | |
14420 | ||
14421 | static const struct gdb_xml_attribute btrace_conf_bts_attributes[] = { | |
14422 | { "size", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
14423 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
14424 | }; | |
14425 | ||
14426 | static const struct gdb_xml_element btrace_conf_children[] = { | |
14427 | { "bts", btrace_conf_bts_attributes, NULL, GDB_XML_EF_OPTIONAL, | |
14428 | parse_xml_btrace_conf_bts, NULL }, | |
14429 | { "pt", btrace_conf_pt_attributes, NULL, GDB_XML_EF_OPTIONAL, | |
14430 | parse_xml_btrace_conf_pt, NULL }, | |
14431 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
14432 | }; | |
14433 | ||
14434 | static const struct gdb_xml_attribute btrace_conf_attributes[] = { | |
14435 | { "version", GDB_XML_AF_NONE, NULL, NULL }, | |
14436 | { NULL, GDB_XML_AF_NONE, NULL, NULL } | |
14437 | }; | |
14438 | ||
14439 | static const struct gdb_xml_element btrace_conf_elements[] = { | |
14440 | { "btrace-conf", btrace_conf_attributes, btrace_conf_children, | |
14441 | GDB_XML_EF_NONE, NULL, NULL }, | |
14442 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
14443 | }; | |
14444 | ||
14445 | #endif /* defined (HAVE_LIBEXPAT) */ | |
14446 | ||
14447 | /* Parse a branch trace configuration xml document XML into CONF. */ | |
14448 | ||
14449 | static void | |
14450 | parse_xml_btrace_conf (struct btrace_config *conf, const char *xml) | |
14451 | { | |
14452 | #if defined (HAVE_LIBEXPAT) | |
14453 | ||
14454 | int errcode; | |
14455 | errcode = gdb_xml_parse_quick (_("btrace-conf"), "btrace-conf.dtd", | |
14456 | btrace_conf_elements, xml, conf); | |
14457 | if (errcode != 0) | |
14458 | error (_("Error parsing branch trace configuration.")); | |
14459 | ||
14460 | #else /* !defined (HAVE_LIBEXPAT) */ | |
14461 | ||
14462 | error (_("Cannot process the branch trace configuration. XML support " | |
14463 | "was disabled at compile time.")); | |
14464 | ||
14465 | #endif /* !defined (HAVE_LIBEXPAT) */ | |
14466 | } | |
14467 | ||
f4abbc16 MM |
14468 | /* Reset our idea of our target's btrace configuration. */ |
14469 | ||
14470 | static void | |
6b8edb51 | 14471 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 14472 | { |
f4abbc16 MM |
14473 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
14474 | } | |
14475 | ||
f4abbc16 MM |
14476 | /* Synchronize the configuration with the target. */ |
14477 | ||
6b8edb51 PA |
14478 | void |
14479 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 14480 | { |
d33501a5 MM |
14481 | struct remote_state *rs; |
14482 | char *buf, *pos, *endbuf; | |
14483 | ||
14484 | rs = get_remote_state (); | |
8d64371b | 14485 | buf = rs->buf.data (); |
d33501a5 MM |
14486 | endbuf = buf + get_remote_packet_size (); |
14487 | ||
ff52c073 | 14488 | if (m_features.packet_support (PACKET_Qbtrace_conf_bts_size) == PACKET_ENABLE |
d33501a5 MM |
14489 | && conf->bts.size != rs->btrace_config.bts.size) |
14490 | { | |
14491 | pos = buf; | |
ff52c073 CS |
14492 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", |
14493 | packets_descriptions[PACKET_Qbtrace_conf_bts_size].name, | |
dda83cd7 | 14494 | conf->bts.size); |
d33501a5 MM |
14495 | |
14496 | putpkt (buf); | |
aa7b36b8 | 14497 | getpkt (&rs->buf); |
d33501a5 | 14498 | |
ff52c073 CS |
14499 | if (m_features.packet_ok (buf, PACKET_Qbtrace_conf_bts_size) |
14500 | == PACKET_ERROR) | |
d33501a5 MM |
14501 | { |
14502 | if (buf[0] == 'E' && buf[1] == '.') | |
14503 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
14504 | else | |
14505 | error (_("Failed to configure the BTS buffer size.")); | |
14506 | } | |
14507 | ||
14508 | rs->btrace_config.bts.size = conf->bts.size; | |
14509 | } | |
b20a6524 | 14510 | |
ff52c073 | 14511 | if (m_features.packet_support (PACKET_Qbtrace_conf_pt_size) == PACKET_ENABLE |
b20a6524 MM |
14512 | && conf->pt.size != rs->btrace_config.pt.size) |
14513 | { | |
14514 | pos = buf; | |
ff52c073 CS |
14515 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", |
14516 | packets_descriptions[PACKET_Qbtrace_conf_pt_size].name, | |
dda83cd7 | 14517 | conf->pt.size); |
b20a6524 MM |
14518 | |
14519 | putpkt (buf); | |
aa7b36b8 | 14520 | getpkt (&rs->buf); |
b20a6524 | 14521 | |
ff52c073 CS |
14522 | if (m_features.packet_ok (buf, PACKET_Qbtrace_conf_pt_size) |
14523 | == PACKET_ERROR) | |
b20a6524 MM |
14524 | { |
14525 | if (buf[0] == 'E' && buf[1] == '.') | |
14526 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
14527 | else | |
14528 | error (_("Failed to configure the trace buffer size.")); | |
14529 | } | |
14530 | ||
14531 | rs->btrace_config.pt.size = conf->pt.size; | |
14532 | } | |
f4abbc16 MM |
14533 | } |
14534 | ||
0d8cbc5f | 14535 | /* Read TP's btrace configuration from the target and store it into CONF. */ |
f4abbc16 MM |
14536 | |
14537 | static void | |
cdda72c2 | 14538 | btrace_read_config (thread_info *tp, btrace_config *conf) |
f4abbc16 | 14539 | { |
0d8cbc5f MM |
14540 | /* target_read_stralloc relies on INFERIOR_PTID. */ |
14541 | scoped_restore_current_thread restore_thread; | |
14542 | switch_to_thread (tp); | |
14543 | ||
9018be22 | 14544 | gdb::optional<gdb::char_vector> xml |
328d42d8 SM |
14545 | = target_read_stralloc (current_inferior ()->top_target (), |
14546 | TARGET_OBJECT_BTRACE_CONF, ""); | |
9018be22 SM |
14547 | if (xml) |
14548 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
14549 | } |
14550 | ||
c0272db5 TW |
14551 | /* Maybe reopen target btrace. */ |
14552 | ||
6b8edb51 PA |
14553 | void |
14554 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
14555 | { |
14556 | struct remote_state *rs = get_remote_state (); | |
c0272db5 | 14557 | int btrace_target_pushed = 0; |
15766370 | 14558 | #if !defined (HAVE_LIBIPT) |
c0272db5 | 14559 | int warned = 0; |
15766370 | 14560 | #endif |
c0272db5 | 14561 | |
aedbe3bb CM |
14562 | /* Don't bother walking the entirety of the remote thread list when |
14563 | we know the feature isn't supported by the remote. */ | |
ff52c073 | 14564 | if (m_features.packet_support (PACKET_qXfer_btrace_conf) != PACKET_ENABLE) |
aedbe3bb CM |
14565 | return; |
14566 | ||
5b6d1e4f | 14567 | for (thread_info *tp : all_non_exited_threads (this)) |
c0272db5 | 14568 | { |
c0272db5 | 14569 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); |
0d8cbc5f | 14570 | btrace_read_config (tp, &rs->btrace_config); |
c0272db5 TW |
14571 | |
14572 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
14573 | continue; | |
14574 | ||
14575 | #if !defined (HAVE_LIBIPT) | |
14576 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
14577 | { | |
14578 | if (!warned) | |
14579 | { | |
14580 | warned = 1; | |
c4e12631 MM |
14581 | warning (_("Target is recording using Intel Processor Trace " |
14582 | "but support was disabled at compile time.")); | |
c0272db5 TW |
14583 | } |
14584 | ||
14585 | continue; | |
14586 | } | |
14587 | #endif /* !defined (HAVE_LIBIPT) */ | |
14588 | ||
14589 | /* Push target, once, but before anything else happens. This way our | |
14590 | changes to the threads will be cleaned up by unpushing the target | |
14591 | in case btrace_read_config () throws. */ | |
14592 | if (!btrace_target_pushed) | |
14593 | { | |
14594 | btrace_target_pushed = 1; | |
14595 | record_btrace_push_target (); | |
6cb06a8c TT |
14596 | gdb_printf (_("Target is recording using %s.\n"), |
14597 | btrace_format_string (rs->btrace_config.format)); | |
c0272db5 TW |
14598 | } |
14599 | ||
cdda72c2 MM |
14600 | tp->btrace.target |
14601 | = new btrace_target_info { tp->ptid, rs->btrace_config }; | |
c0272db5 | 14602 | } |
c0272db5 TW |
14603 | } |
14604 | ||
9accd112 MM |
14605 | /* Enable branch tracing. */ |
14606 | ||
f6ac5f3d | 14607 | struct btrace_target_info * |
696c0d5e MM |
14608 | remote_target::enable_btrace (thread_info *tp, |
14609 | const struct btrace_config *conf) | |
9accd112 | 14610 | { |
b20a6524 | 14611 | struct packet_config *packet = NULL; |
9accd112 | 14612 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
14613 | char *buf = rs->buf.data (); |
14614 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14615 | |
ff52c073 | 14616 | unsigned int which_packet; |
b20a6524 MM |
14617 | switch (conf->format) |
14618 | { | |
14619 | case BTRACE_FORMAT_BTS: | |
ff52c073 | 14620 | which_packet = PACKET_Qbtrace_bts; |
b20a6524 | 14621 | break; |
b20a6524 | 14622 | case BTRACE_FORMAT_PT: |
ff52c073 | 14623 | which_packet = PACKET_Qbtrace_pt; |
b20a6524 | 14624 | break; |
ff52c073 CS |
14625 | default: |
14626 | internal_error (_("Bad branch btrace format: %u."), | |
14627 | (unsigned int) conf->format); | |
b20a6524 MM |
14628 | } |
14629 | ||
ff52c073 | 14630 | packet = &m_features.m_protocol_packets[which_packet]; |
b20a6524 | 14631 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14632 | error (_("Target does not support branch tracing.")); |
14633 | ||
f4abbc16 MM |
14634 | btrace_sync_conf (conf); |
14635 | ||
696c0d5e | 14636 | ptid_t ptid = tp->ptid; |
9accd112 MM |
14637 | set_general_thread (ptid); |
14638 | ||
ff52c073 CS |
14639 | buf += xsnprintf (buf, endbuf - buf, "%s", |
14640 | packets_descriptions[which_packet].name); | |
9accd112 | 14641 | putpkt (rs->buf); |
aa7b36b8 | 14642 | getpkt (&rs->buf); |
9accd112 | 14643 | |
ff52c073 | 14644 | if (m_features.packet_ok (rs->buf, which_packet) == PACKET_ERROR) |
9accd112 MM |
14645 | { |
14646 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14647 | error (_("Could not enable branch tracing for %s: %s"), | |
a068643d | 14648 | target_pid_to_str (ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14649 | else |
14650 | error (_("Could not enable branch tracing for %s."), | |
a068643d | 14651 | target_pid_to_str (ptid).c_str ()); |
9accd112 MM |
14652 | } |
14653 | ||
cdda72c2 | 14654 | btrace_target_info *tinfo = new btrace_target_info { ptid }; |
9accd112 | 14655 | |
f4abbc16 MM |
14656 | /* If we fail to read the configuration, we lose some information, but the |
14657 | tracing itself is not impacted. */ | |
a70b8144 | 14658 | try |
492d29ea | 14659 | { |
0d8cbc5f | 14660 | btrace_read_config (tp, &tinfo->conf); |
492d29ea | 14661 | } |
230d2906 | 14662 | catch (const gdb_exception_error &err) |
492d29ea PA |
14663 | { |
14664 | if (err.message != NULL) | |
3d6e9d23 | 14665 | warning ("%s", err.what ()); |
492d29ea | 14666 | } |
f4abbc16 | 14667 | |
9accd112 MM |
14668 | return tinfo; |
14669 | } | |
14670 | ||
14671 | /* Disable branch tracing. */ | |
14672 | ||
f6ac5f3d PA |
14673 | void |
14674 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 | 14675 | { |
9accd112 | 14676 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
14677 | char *buf = rs->buf.data (); |
14678 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14679 | |
ff52c073 | 14680 | if (m_features.packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 MM |
14681 | error (_("Target does not support branch tracing.")); |
14682 | ||
14683 | set_general_thread (tinfo->ptid); | |
14684 | ||
ff52c073 CS |
14685 | buf += xsnprintf (buf, endbuf - buf, "%s", |
14686 | packets_descriptions[PACKET_Qbtrace_off].name); | |
9accd112 | 14687 | putpkt (rs->buf); |
aa7b36b8 | 14688 | getpkt (&rs->buf); |
9accd112 | 14689 | |
ff52c073 | 14690 | if (m_features.packet_ok (rs->buf, PACKET_Qbtrace_off) == PACKET_ERROR) |
9accd112 MM |
14691 | { |
14692 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14693 | error (_("Could not disable branch tracing for %s: %s"), | |
a068643d | 14694 | target_pid_to_str (tinfo->ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14695 | else |
14696 | error (_("Could not disable branch tracing for %s."), | |
a068643d | 14697 | target_pid_to_str (tinfo->ptid).c_str ()); |
9accd112 MM |
14698 | } |
14699 | ||
cdda72c2 | 14700 | delete tinfo; |
9accd112 MM |
14701 | } |
14702 | ||
14703 | /* Teardown branch tracing. */ | |
14704 | ||
f6ac5f3d PA |
14705 | void |
14706 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14707 | { |
14708 | /* We must not talk to the target during teardown. */ | |
cdda72c2 | 14709 | delete tinfo; |
9accd112 MM |
14710 | } |
14711 | ||
14712 | /* Read the branch trace. */ | |
14713 | ||
f6ac5f3d PA |
14714 | enum btrace_error |
14715 | remote_target::read_btrace (struct btrace_data *btrace, | |
14716 | struct btrace_target_info *tinfo, | |
14717 | enum btrace_read_type type) | |
9accd112 | 14718 | { |
9accd112 | 14719 | const char *annex; |
9accd112 | 14720 | |
ff52c073 | 14721 | if (m_features.packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
14722 | error (_("Target does not support branch tracing.")); |
14723 | ||
14724 | #if !defined(HAVE_LIBEXPAT) | |
14725 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
14726 | #endif | |
14727 | ||
14728 | switch (type) | |
14729 | { | |
864089d2 | 14730 | case BTRACE_READ_ALL: |
9accd112 MM |
14731 | annex = "all"; |
14732 | break; | |
864089d2 | 14733 | case BTRACE_READ_NEW: |
9accd112 MM |
14734 | annex = "new"; |
14735 | break; | |
969c39fb MM |
14736 | case BTRACE_READ_DELTA: |
14737 | annex = "delta"; | |
14738 | break; | |
9accd112 | 14739 | default: |
f34652de | 14740 | internal_error (_("Bad branch tracing read type: %u."), |
9accd112 MM |
14741 | (unsigned int) type); |
14742 | } | |
14743 | ||
9018be22 | 14744 | gdb::optional<gdb::char_vector> xml |
328d42d8 SM |
14745 | = target_read_stralloc (current_inferior ()->top_target (), |
14746 | TARGET_OBJECT_BTRACE, annex); | |
9018be22 | 14747 | if (!xml) |
969c39fb | 14748 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 14749 | |
9018be22 | 14750 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 14751 | |
969c39fb | 14752 | return BTRACE_ERR_NONE; |
9accd112 MM |
14753 | } |
14754 | ||
f6ac5f3d PA |
14755 | const struct btrace_config * |
14756 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
14757 | { |
14758 | return &tinfo->conf; | |
14759 | } | |
14760 | ||
57810aa7 | 14761 | bool |
f6ac5f3d | 14762 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 14763 | { |
ff52c073 CS |
14764 | return |
14765 | (m_features.packet_support (PACKET_augmented_libraries_svr4_read_feature) | |
14766 | == PACKET_ENABLE); | |
ced63ec0 GB |
14767 | } |
14768 | ||
9dd130a0 TT |
14769 | /* Implementation of to_load. */ |
14770 | ||
f6ac5f3d PA |
14771 | void |
14772 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
14773 | { |
14774 | generic_load (name, from_tty); | |
14775 | } | |
14776 | ||
c78fa86a GB |
14777 | /* Accepts an integer PID; returns a string representing a file that |
14778 | can be opened on the remote side to get the symbols for the child | |
14779 | process. Returns NULL if the operation is not supported. */ | |
14780 | ||
0e90c441 | 14781 | const char * |
f6ac5f3d | 14782 | remote_target::pid_to_exec_file (int pid) |
c78fa86a | 14783 | { |
9018be22 | 14784 | static gdb::optional<gdb::char_vector> filename; |
835205d0 | 14785 | char *annex = NULL; |
c78fa86a | 14786 | |
ff52c073 | 14787 | if (m_features.packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) |
c78fa86a GB |
14788 | return NULL; |
14789 | ||
5b6d1e4f | 14790 | inferior *inf = find_inferior_pid (this, pid); |
835205d0 | 14791 | if (inf == NULL) |
f34652de | 14792 | internal_error (_("not currently attached to process %d"), pid); |
835205d0 GB |
14793 | |
14794 | if (!inf->fake_pid_p) | |
14795 | { | |
14796 | const int annex_size = 9; | |
14797 | ||
224c3ddb | 14798 | annex = (char *) alloca (annex_size); |
835205d0 GB |
14799 | xsnprintf (annex, annex_size, "%x", pid); |
14800 | } | |
14801 | ||
328d42d8 | 14802 | filename = target_read_stralloc (current_inferior ()->top_target (), |
c78fa86a GB |
14803 | TARGET_OBJECT_EXEC_FILE, annex); |
14804 | ||
9018be22 | 14805 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
14806 | } |
14807 | ||
750ce8d1 YQ |
14808 | /* Implement the to_can_do_single_step target_ops method. */ |
14809 | ||
f6ac5f3d PA |
14810 | int |
14811 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
14812 | { |
14813 | /* We can only tell whether target supports single step or not by | |
14814 | supported s and S vCont actions if the stub supports vContSupported | |
14815 | feature. If the stub doesn't support vContSupported feature, | |
14816 | we have conservatively to think target doesn't supports single | |
14817 | step. */ | |
ff52c073 | 14818 | if (m_features.packet_support (PACKET_vContSupported) == PACKET_ENABLE) |
750ce8d1 YQ |
14819 | { |
14820 | struct remote_state *rs = get_remote_state (); | |
14821 | ||
750ce8d1 YQ |
14822 | return rs->supports_vCont.s && rs->supports_vCont.S; |
14823 | } | |
14824 | else | |
14825 | return 0; | |
14826 | } | |
14827 | ||
3a00c802 PA |
14828 | /* Implementation of the to_execution_direction method for the remote |
14829 | target. */ | |
14830 | ||
f6ac5f3d PA |
14831 | enum exec_direction_kind |
14832 | remote_target::execution_direction () | |
3a00c802 PA |
14833 | { |
14834 | struct remote_state *rs = get_remote_state (); | |
14835 | ||
14836 | return rs->last_resume_exec_dir; | |
14837 | } | |
14838 | ||
f6327dcb KB |
14839 | /* Return pointer to the thread_info struct which corresponds to |
14840 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
14841 | ||
f6ac5f3d PA |
14842 | thread_info * |
14843 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
14844 | int handle_len, | |
14845 | inferior *inf) | |
f6327dcb | 14846 | { |
5b6d1e4f | 14847 | for (thread_info *tp : all_non_exited_threads (this)) |
f6327dcb | 14848 | { |
7aabaf9d | 14849 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
14850 | |
14851 | if (tp->inf == inf && priv != NULL) | |
dda83cd7 | 14852 | { |
7aabaf9d | 14853 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 14854 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
dda83cd7 | 14855 | handle_len, priv->thread_handle.size ()); |
7aabaf9d | 14856 | if (memcmp (thread_handle, priv->thread_handle.data (), |
dda83cd7 | 14857 | handle_len) == 0) |
f6327dcb KB |
14858 | return tp; |
14859 | } | |
14860 | } | |
14861 | ||
14862 | return NULL; | |
14863 | } | |
14864 | ||
1f08d324 | 14865 | gdb::array_view<const gdb_byte> |
3d6c6204 KB |
14866 | remote_target::thread_info_to_thread_handle (struct thread_info *tp) |
14867 | { | |
14868 | remote_thread_info *priv = get_remote_thread_info (tp); | |
14869 | return priv->thread_handle; | |
14870 | } | |
14871 | ||
57810aa7 | 14872 | bool |
f6ac5f3d | 14873 | remote_target::can_async_p () |
6426a772 | 14874 | { |
fce6cd34 AB |
14875 | /* This flag should be checked in the common target.c code. */ |
14876 | gdb_assert (target_async_permitted); | |
75c99385 | 14877 | |
fce6cd34 | 14878 | /* We're async whenever the serial device can. */ |
e84ffe7b | 14879 | return get_remote_state ()->can_async_p (); |
6426a772 JM |
14880 | } |
14881 | ||
57810aa7 | 14882 | bool |
f6ac5f3d | 14883 | remote_target::is_async_p () |
6426a772 | 14884 | { |
23860348 | 14885 | /* We're async whenever the serial device is. */ |
e84ffe7b | 14886 | return get_remote_state ()->is_async_p (); |
6426a772 JM |
14887 | } |
14888 | ||
2acceee2 JM |
14889 | /* Pass the SERIAL event on and up to the client. One day this code |
14890 | will be able to delay notifying the client of an event until the | |
23860348 | 14891 | point where an entire packet has been received. */ |
2acceee2 | 14892 | |
2acceee2 JM |
14893 | static serial_event_ftype remote_async_serial_handler; |
14894 | ||
6426a772 | 14895 | static void |
819cc324 | 14896 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14897 | { |
2acceee2 JM |
14898 | /* Don't propogate error information up to the client. Instead let |
14899 | the client find out about the error by querying the target. */ | |
b1a35af2 | 14900 | inferior_event_handler (INF_REG_EVENT); |
2acceee2 JM |
14901 | } |
14902 | ||
5b6d1e4f PA |
14903 | int |
14904 | remote_target::async_wait_fd () | |
14905 | { | |
14906 | struct remote_state *rs = get_remote_state (); | |
14907 | return rs->remote_desc->fd; | |
14908 | } | |
14909 | ||
f6ac5f3d | 14910 | void |
4a570176 | 14911 | remote_target::async (bool enable) |
2acceee2 | 14912 | { |
5d93a237 TT |
14913 | struct remote_state *rs = get_remote_state (); |
14914 | ||
6a3753b3 | 14915 | if (enable) |
2acceee2 | 14916 | { |
88b496c3 | 14917 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14918 | |
14919 | /* If there are pending events in the stop reply queue tell the | |
14920 | event loop to process them. */ | |
953edf2b | 14921 | if (!rs->stop_reply_queue.empty ()) |
92b98b37 SM |
14922 | rs->mark_async_event_handler (); |
14923 | ||
6efcd9a8 PA |
14924 | /* For simplicity, below we clear the pending events token |
14925 | without remembering whether it is marked, so here we always | |
14926 | mark it. If there's actually no pending notification to | |
14927 | process, this ends up being a no-op (other than a spurious | |
14928 | event-loop wakeup). */ | |
14929 | if (target_is_non_stop_p ()) | |
14930 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14931 | } |
14932 | else | |
b7d2e916 PA |
14933 | { |
14934 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14935 | /* If the core is disabling async, it doesn't want to be |
14936 | disturbed with target events. Clear all async event sources | |
14937 | too. */ | |
92b98b37 SM |
14938 | rs->clear_async_event_handler (); |
14939 | ||
6efcd9a8 PA |
14940 | if (target_is_non_stop_p ()) |
14941 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14942 | } |
6426a772 JM |
14943 | } |
14944 | ||
65706a29 PA |
14945 | /* Implementation of the to_thread_events method. */ |
14946 | ||
f6ac5f3d PA |
14947 | void |
14948 | remote_target::thread_events (int enable) | |
65706a29 PA |
14949 | { |
14950 | struct remote_state *rs = get_remote_state (); | |
14951 | size_t size = get_remote_packet_size (); | |
65706a29 | 14952 | |
ff52c073 | 14953 | if (m_features.packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) |
65706a29 PA |
14954 | return; |
14955 | ||
8d64371b | 14956 | xsnprintf (rs->buf.data (), size, "QThreadEvents:%x", enable ? 1 : 0); |
65706a29 | 14957 | putpkt (rs->buf); |
aa7b36b8 | 14958 | getpkt (&rs->buf); |
65706a29 | 14959 | |
ff52c073 | 14960 | switch (m_features.packet_ok (rs->buf, PACKET_QThreadEvents)) |
65706a29 PA |
14961 | { |
14962 | case PACKET_OK: | |
8d64371b TT |
14963 | if (strcmp (rs->buf.data (), "OK") != 0) |
14964 | error (_("Remote refused setting thread events: %s"), rs->buf.data ()); | |
65706a29 PA |
14965 | break; |
14966 | case PACKET_ERROR: | |
8d64371b | 14967 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
65706a29 PA |
14968 | break; |
14969 | case PACKET_UNKNOWN: | |
14970 | break; | |
14971 | } | |
14972 | } | |
14973 | ||
d471ea57 | 14974 | static void |
981a3fb3 | 14975 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14976 | { |
37a105a1 | 14977 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14978 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14979 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14980 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14981 | |
2e783024 | 14982 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14983 | for (; list != NULL; list = list->next) |
14984 | if (strcmp (list->name, "Z-packet") == 0) | |
14985 | continue; | |
427c3a89 DJ |
14986 | else if (list->type == not_set_cmd) |
14987 | /* Alias commands are exactly like the original, except they | |
14988 | don't have the normal type. */ | |
14989 | continue; | |
14990 | else | |
37a105a1 | 14991 | { |
2e783024 | 14992 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14993 | |
112e8700 SM |
14994 | uiout->field_string ("name", list->name); |
14995 | uiout->text (": "); | |
427c3a89 | 14996 | if (list->type == show_cmd) |
f5c4fcd9 | 14997 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14998 | else |
14999 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 15000 | } |
d471ea57 | 15001 | } |
5a2468f5 | 15002 | |
74daa597 SM |
15003 | /* Some change happened in PSPACE's objfile list (obfiles added or removed), |
15004 | offer all inferiors using that program space a change to look up symbols. */ | |
0f71a2f6 | 15005 | |
dc8acb97 | 15006 | static void |
74daa597 | 15007 | remote_objfile_changed_check_symbols (program_space *pspace) |
dc8acb97 | 15008 | { |
06c7226e SM |
15009 | /* The affected program space is possibly shared by multiple inferiors. |
15010 | Consider sending a qSymbol packet for each of the inferiors using that | |
15011 | program space. */ | |
15012 | for (inferior *inf : all_inferiors ()) | |
15013 | { | |
15014 | if (inf->pspace != pspace) | |
15015 | continue; | |
122373f7 | 15016 | |
06c7226e SM |
15017 | /* Check whether the inferior's process target is a remote target. */ |
15018 | remote_target *remote = as_remote_target (inf->process_target ()); | |
15019 | if (remote == nullptr) | |
15020 | continue; | |
15021 | ||
15022 | /* When we are attaching or handling a fork child and the shared library | |
15023 | subsystem reads the list of loaded libraries, we receive new objfile | |
15024 | events in between each found library. The libraries are read in an | |
15025 | undefined order, so if we gave the remote side a chance to look up | |
15026 | symbols between each objfile, we might give it an inconsistent picture | |
15027 | of the inferior. It could appear that a library A appears loaded but | |
15028 | a library B does not, even though library A requires library B. That | |
15029 | would present a state that couldn't normally exist in the inferior. | |
15030 | ||
15031 | So, skip these events, we'll give the remote a chance to look up | |
15032 | symbols once all the loaded libraries and their symbols are known to | |
15033 | GDB. */ | |
15034 | if (inf->in_initial_library_scan) | |
15035 | continue; | |
15036 | ||
15037 | if (!remote->has_execution (inf)) | |
15038 | continue; | |
15039 | ||
15040 | /* Need to switch to a specific thread, because remote_check_symbols will | |
287de656 | 15041 | set the general thread using INFERIOR_PTID. |
122373f7 | 15042 | |
06c7226e SM |
15043 | It's possible to have inferiors with no thread here, because we are |
15044 | called very early in the connection process, while the inferior is | |
15045 | being set up, before threads are added. Just skip it, start_remote_1 | |
15046 | also calls remote_check_symbols when it's done setting things up. */ | |
15047 | thread_info *thread = any_thread_of_inferior (inf); | |
15048 | if (thread != nullptr) | |
15049 | { | |
15050 | scoped_restore_current_thread restore_thread; | |
15051 | switch_to_thread (thread); | |
15052 | remote->remote_check_symbols (); | |
15053 | } | |
15054 | } | |
dc8acb97 MS |
15055 | } |
15056 | ||
74daa597 SM |
15057 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
15058 | ||
15059 | static void | |
15060 | remote_new_objfile (struct objfile *objfile) | |
15061 | { | |
15062 | remote_objfile_changed_check_symbols (objfile->pspace); | |
15063 | } | |
15064 | ||
00bf0b85 SS |
15065 | /* Pull all the tracepoints defined on the target and create local |
15066 | data structures representing them. We don't want to create real | |
15067 | tracepoints yet, we don't want to mess up the user's existing | |
15068 | collection. */ | |
7a78108a | 15069 | |
f6ac5f3d PA |
15070 | int |
15071 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 15072 | { |
00bf0b85 SS |
15073 | struct remote_state *rs = get_remote_state (); |
15074 | char *p; | |
d5551862 | 15075 | |
00bf0b85 SS |
15076 | /* Ask for a first packet of tracepoint definition. */ |
15077 | putpkt ("qTfP"); | |
aa7b36b8 | 15078 | getpkt (&rs->buf); |
8d64371b | 15079 | p = rs->buf.data (); |
00bf0b85 | 15080 | while (*p && *p != 'l') |
d5551862 | 15081 | { |
00bf0b85 SS |
15082 | parse_tracepoint_definition (p, utpp); |
15083 | /* Ask for another packet of tracepoint definition. */ | |
15084 | putpkt ("qTsP"); | |
aa7b36b8 | 15085 | getpkt (&rs->buf); |
8d64371b | 15086 | p = rs->buf.data (); |
d5551862 | 15087 | } |
00bf0b85 | 15088 | return 0; |
d5551862 SS |
15089 | } |
15090 | ||
f6ac5f3d PA |
15091 | int |
15092 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 15093 | { |
00bf0b85 | 15094 | struct remote_state *rs = get_remote_state (); |
d5551862 | 15095 | char *p; |
d5551862 | 15096 | |
00bf0b85 SS |
15097 | /* Ask for a first packet of variable definition. */ |
15098 | putpkt ("qTfV"); | |
aa7b36b8 | 15099 | getpkt (&rs->buf); |
8d64371b | 15100 | p = rs->buf.data (); |
00bf0b85 | 15101 | while (*p && *p != 'l') |
d5551862 | 15102 | { |
00bf0b85 SS |
15103 | parse_tsv_definition (p, utsvp); |
15104 | /* Ask for another packet of variable definition. */ | |
15105 | putpkt ("qTsV"); | |
aa7b36b8 | 15106 | getpkt (&rs->buf); |
8d64371b | 15107 | p = rs->buf.data (); |
d5551862 | 15108 | } |
00bf0b85 | 15109 | return 0; |
d5551862 SS |
15110 | } |
15111 | ||
c1e36e3e PA |
15112 | /* The "set/show range-stepping" show hook. */ |
15113 | ||
15114 | static void | |
15115 | show_range_stepping (struct ui_file *file, int from_tty, | |
15116 | struct cmd_list_element *c, | |
15117 | const char *value) | |
15118 | { | |
6cb06a8c TT |
15119 | gdb_printf (file, |
15120 | _("Debugger's willingness to use range stepping " | |
15121 | "is %s.\n"), value); | |
c1e36e3e PA |
15122 | } |
15123 | ||
6b8edb51 PA |
15124 | /* Return true if the vCont;r action is supported by the remote |
15125 | stub. */ | |
15126 | ||
15127 | bool | |
15128 | remote_target::vcont_r_supported () | |
15129 | { | |
ff52c073 | 15130 | return (m_features.packet_support (PACKET_vCont) == PACKET_ENABLE |
6b8edb51 PA |
15131 | && get_remote_state ()->supports_vCont.r); |
15132 | } | |
15133 | ||
c1e36e3e PA |
15134 | /* The "set/show range-stepping" set hook. */ |
15135 | ||
15136 | static void | |
eb4c3f4a | 15137 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
15138 | struct cmd_list_element *c) |
15139 | { | |
6b8edb51 PA |
15140 | /* When enabling, check whether range stepping is actually supported |
15141 | by the target, and warn if not. */ | |
c1e36e3e PA |
15142 | if (use_range_stepping) |
15143 | { | |
6b8edb51 PA |
15144 | remote_target *remote = get_current_remote_target (); |
15145 | if (remote == NULL | |
15146 | || !remote->vcont_r_supported ()) | |
15147 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
15148 | } |
15149 | } | |
15150 | ||
baf2b57f SM |
15151 | static void |
15152 | show_remote_debug (struct ui_file *file, int from_tty, | |
15153 | struct cmd_list_element *c, const char *value) | |
15154 | { | |
6cb06a8c TT |
15155 | gdb_printf (file, _("Debugging of remote protocol is %s.\n"), |
15156 | value); | |
baf2b57f SM |
15157 | } |
15158 | ||
15159 | static void | |
15160 | show_remote_timeout (struct ui_file *file, int from_tty, | |
15161 | struct cmd_list_element *c, const char *value) | |
15162 | { | |
6cb06a8c TT |
15163 | gdb_printf (file, |
15164 | _("Timeout limit to wait for target to respond is %s.\n"), | |
15165 | value); | |
baf2b57f SM |
15166 | } |
15167 | ||
dbe692af LM |
15168 | /* Implement the "supports_memory_tagging" target_ops method. */ |
15169 | ||
15170 | bool | |
15171 | remote_target::supports_memory_tagging () | |
15172 | { | |
ff52c073 | 15173 | return m_features.remote_memory_tagging_p (); |
2c2e7f87 LM |
15174 | } |
15175 | ||
15176 | /* Create the qMemTags packet given ADDRESS, LEN and TYPE. */ | |
15177 | ||
15178 | static void | |
15179 | create_fetch_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
15180 | size_t len, int type) | |
15181 | { | |
99d9c3b9 | 15182 | int addr_size = gdbarch_addr_bit (current_inferior ()->arch ()) / 8; |
2c2e7f87 LM |
15183 | |
15184 | std::string request = string_printf ("qMemTags:%s,%s:%s", | |
15185 | phex_nz (address, addr_size), | |
15186 | phex_nz (len, sizeof (len)), | |
15187 | phex_nz (type, sizeof (type))); | |
15188 | ||
15189 | strcpy (packet.data (), request.c_str ()); | |
15190 | } | |
15191 | ||
15192 | /* Parse the qMemTags packet reply into TAGS. | |
15193 | ||
15194 | Return true if successful, false otherwise. */ | |
15195 | ||
15196 | static bool | |
15197 | parse_fetch_memtags_reply (const gdb::char_vector &reply, | |
15198 | gdb::byte_vector &tags) | |
15199 | { | |
15200 | if (reply.empty () || reply[0] == 'E' || reply[0] != 'm') | |
15201 | return false; | |
15202 | ||
15203 | /* Copy the tag data. */ | |
15204 | tags = hex2bin (reply.data () + 1); | |
15205 | ||
15206 | return true; | |
15207 | } | |
15208 | ||
15209 | /* Create the QMemTags packet given ADDRESS, LEN, TYPE and TAGS. */ | |
15210 | ||
15211 | static void | |
15212 | create_store_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
15213 | size_t len, int type, | |
15214 | const gdb::byte_vector &tags) | |
15215 | { | |
99d9c3b9 | 15216 | int addr_size = gdbarch_addr_bit (current_inferior ()->arch ()) / 8; |
2c2e7f87 LM |
15217 | |
15218 | /* Put together the main packet, address and length. */ | |
15219 | std::string request = string_printf ("QMemTags:%s,%s:%s:", | |
15220 | phex_nz (address, addr_size), | |
15221 | phex_nz (len, sizeof (len)), | |
15222 | phex_nz (type, sizeof (type))); | |
15223 | request += bin2hex (tags.data (), tags.size ()); | |
15224 | ||
15225 | /* Check if we have exceeded the maximum packet size. */ | |
15226 | if (packet.size () < request.length ()) | |
15227 | error (_("Contents too big for packet QMemTags.")); | |
15228 | ||
15229 | strcpy (packet.data (), request.c_str ()); | |
dbe692af LM |
15230 | } |
15231 | ||
15232 | /* Implement the "fetch_memtags" target_ops method. */ | |
15233 | ||
15234 | bool | |
15235 | remote_target::fetch_memtags (CORE_ADDR address, size_t len, | |
15236 | gdb::byte_vector &tags, int type) | |
15237 | { | |
2c2e7f87 | 15238 | /* Make sure the qMemTags packet is supported. */ |
ff52c073 | 15239 | if (!m_features.remote_memory_tagging_p ()) |
2c2e7f87 LM |
15240 | gdb_assert_not_reached ("remote fetch_memtags called with packet disabled"); |
15241 | ||
15242 | struct remote_state *rs = get_remote_state (); | |
15243 | ||
15244 | create_fetch_memtags_request (rs->buf, address, len, type); | |
15245 | ||
15246 | putpkt (rs->buf); | |
aa7b36b8 | 15247 | getpkt (&rs->buf); |
2c2e7f87 LM |
15248 | |
15249 | return parse_fetch_memtags_reply (rs->buf, tags); | |
dbe692af LM |
15250 | } |
15251 | ||
15252 | /* Implement the "store_memtags" target_ops method. */ | |
15253 | ||
15254 | bool | |
15255 | remote_target::store_memtags (CORE_ADDR address, size_t len, | |
15256 | const gdb::byte_vector &tags, int type) | |
15257 | { | |
2c2e7f87 | 15258 | /* Make sure the QMemTags packet is supported. */ |
ff52c073 | 15259 | if (!m_features.remote_memory_tagging_p ()) |
2c2e7f87 LM |
15260 | gdb_assert_not_reached ("remote store_memtags called with packet disabled"); |
15261 | ||
15262 | struct remote_state *rs = get_remote_state (); | |
15263 | ||
15264 | create_store_memtags_request (rs->buf, address, len, type, tags); | |
15265 | ||
15266 | putpkt (rs->buf); | |
aa7b36b8 | 15267 | getpkt (&rs->buf); |
2c2e7f87 LM |
15268 | |
15269 | /* Verify if the request was successful. */ | |
15270 | return packet_check_result (rs->buf.data ()) == PACKET_OK; | |
dbe692af LM |
15271 | } |
15272 | ||
c39ebbf4 TV |
15273 | /* Return true if remote target T is non-stop. */ |
15274 | ||
15275 | bool | |
15276 | remote_target_is_non_stop_p (remote_target *t) | |
15277 | { | |
15278 | scoped_restore_current_thread restore_thread; | |
15279 | switch_to_target_no_thread (t); | |
15280 | ||
15281 | return target_is_non_stop_p (); | |
15282 | } | |
15283 | ||
754487e2 LM |
15284 | #if GDB_SELF_TEST |
15285 | ||
15286 | namespace selftests { | |
15287 | ||
15288 | static void | |
15289 | test_memory_tagging_functions () | |
15290 | { | |
15291 | remote_target remote; | |
15292 | ||
15293 | struct packet_config *config | |
ff52c073 | 15294 | = &remote.m_features.m_protocol_packets[PACKET_memory_tagging_feature]; |
754487e2 LM |
15295 | |
15296 | scoped_restore restore_memtag_support_ | |
15297 | = make_scoped_restore (&config->support); | |
15298 | ||
15299 | /* Test memory tagging packet support. */ | |
15300 | config->support = PACKET_SUPPORT_UNKNOWN; | |
15301 | SELF_CHECK (remote.supports_memory_tagging () == false); | |
15302 | config->support = PACKET_DISABLE; | |
15303 | SELF_CHECK (remote.supports_memory_tagging () == false); | |
15304 | config->support = PACKET_ENABLE; | |
15305 | SELF_CHECK (remote.supports_memory_tagging () == true); | |
15306 | ||
15307 | /* Setup testing. */ | |
15308 | gdb::char_vector packet; | |
15309 | gdb::byte_vector tags, bv; | |
15310 | std::string expected, reply; | |
15311 | packet.resize (32000); | |
15312 | ||
15313 | /* Test creating a qMemTags request. */ | |
15314 | ||
15315 | expected = "qMemTags:0,0:0"; | |
15316 | create_fetch_memtags_request (packet, 0x0, 0x0, 0); | |
15317 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
15318 | ||
15319 | expected = "qMemTags:deadbeef,10:1"; | |
15320 | create_fetch_memtags_request (packet, 0xdeadbeef, 16, 1); | |
15321 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
15322 | ||
15323 | /* Test parsing a qMemTags reply. */ | |
15324 | ||
15325 | /* Error reply, tags vector unmodified. */ | |
15326 | reply = "E00"; | |
15327 | strcpy (packet.data (), reply.c_str ()); | |
15328 | tags.resize (0); | |
15329 | SELF_CHECK (parse_fetch_memtags_reply (packet, tags) == false); | |
15330 | SELF_CHECK (tags.size () == 0); | |
15331 | ||
15332 | /* Valid reply, tags vector updated. */ | |
15333 | tags.resize (0); | |
15334 | bv.resize (0); | |
15335 | ||
15336 | for (int i = 0; i < 5; i++) | |
15337 | bv.push_back (i); | |
15338 | ||
15339 | reply = "m" + bin2hex (bv.data (), bv.size ()); | |
15340 | strcpy (packet.data (), reply.c_str ()); | |
15341 | ||
15342 | SELF_CHECK (parse_fetch_memtags_reply (packet, tags) == true); | |
15343 | SELF_CHECK (tags.size () == 5); | |
15344 | ||
15345 | for (int i = 0; i < 5; i++) | |
15346 | SELF_CHECK (tags[i] == i); | |
15347 | ||
15348 | /* Test creating a QMemTags request. */ | |
15349 | ||
15350 | /* Empty tag data. */ | |
15351 | tags.resize (0); | |
15352 | expected = "QMemTags:0,0:0:"; | |
15353 | create_store_memtags_request (packet, 0x0, 0x0, 0, tags); | |
15354 | SELF_CHECK (memcmp (packet.data (), expected.c_str (), | |
15355 | expected.length ()) == 0); | |
15356 | ||
15357 | /* Non-empty tag data. */ | |
15358 | tags.resize (0); | |
15359 | for (int i = 0; i < 5; i++) | |
15360 | tags.push_back (i); | |
15361 | expected = "QMemTags:deadbeef,ff:1:0001020304"; | |
15362 | create_store_memtags_request (packet, 0xdeadbeef, 255, 1, tags); | |
15363 | SELF_CHECK (memcmp (packet.data (), expected.c_str (), | |
15364 | expected.length ()) == 0); | |
15365 | } | |
15366 | ||
15367 | } // namespace selftests | |
15368 | #endif /* GDB_SELF_TEST */ | |
15369 | ||
6c265988 | 15370 | void _initialize_remote (); |
c906108c | 15371 | void |
6c265988 | 15372 | _initialize_remote () |
c906108c | 15373 | { |
d9f719f1 PA |
15374 | add_target (remote_target_info, remote_target::open); |
15375 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 15376 | |
dc8acb97 | 15377 | /* Hook into new objfile notification. */ |
c90e7d63 | 15378 | gdb::observers::new_objfile.attach (remote_new_objfile, "remote"); |
74daa597 SM |
15379 | gdb::observers::all_objfiles_removed.attach |
15380 | (remote_objfile_changed_check_symbols, "remote"); | |
dc8acb97 | 15381 | |
c906108c SS |
15382 | #if 0 |
15383 | init_remote_threadtests (); | |
15384 | #endif | |
15385 | ||
23860348 | 15386 | /* set/show remote ... */ |
d471ea57 | 15387 | |
0743fc83 | 15388 | add_basic_prefix_cmd ("remote", class_maintenance, _("\ |
590042fc | 15389 | Remote protocol specific variables.\n\ |
5a2468f5 | 15390 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 15391 | the packets being used."), |
2f822da5 | 15392 | &remote_set_cmdlist, |
0743fc83 | 15393 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 15394 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
590042fc | 15395 | Remote protocol specific variables.\n\ |
5a2468f5 | 15396 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 15397 | the packets being used."), |
2f822da5 | 15398 | &remote_show_cmdlist, |
23860348 | 15399 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 15400 | |
1a966eab AC |
15401 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
15402 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
15403 | Argument is a single section name (default: all loaded sections).\n\ |
15404 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
15405 | &cmdlist); |
15406 | ||
e5b176f2 | 15407 | add_cmd ("packet", class_maintenance, cli_packet_command, _("\ |
1a966eab | 15408 | Send an arbitrary packet to a remote target.\n\ |
c906108c SS |
15409 | maintenance packet TEXT\n\ |
15410 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
15411 | this command sends the string TEXT to the inferior, and displays the\n\ | |
15412 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 15413 | terminating `#' character and checksum."), |
c906108c SS |
15414 | &maintenancelist); |
15415 | ||
9f260536 SM |
15416 | set_show_commands remotebreak_cmds |
15417 | = add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ | |
7915a72c AC |
15418 | Set whether to send break if interrupted."), _("\ |
15419 | Show whether to send break if interrupted."), _("\ | |
15420 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9f260536 SM |
15421 | set_remotebreak, show_remotebreak, |
15422 | &setlist, &showlist); | |
15423 | deprecate_cmd (remotebreak_cmds.set, "set remote interrupt-sequence"); | |
15424 | deprecate_cmd (remotebreak_cmds.show, "show remote interrupt-sequence"); | |
9a7071a8 JB |
15425 | |
15426 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
15427 | interrupt_sequence_modes, &interrupt_sequence_mode, |
15428 | _("\ | |
9a7071a8 JB |
15429 | Set interrupt sequence to remote target."), _("\ |
15430 | Show interrupt sequence to remote target."), _("\ | |
15431 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
15432 | NULL, show_interrupt_sequence, | |
15433 | &remote_set_cmdlist, | |
15434 | &remote_show_cmdlist); | |
15435 | ||
15436 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
15437 | &interrupt_on_connect, _("\ | |
590042fc PW |
15438 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ |
15439 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ | |
9a7071a8 JB |
15440 | If set, interrupt sequence is sent to remote target."), |
15441 | NULL, NULL, | |
15442 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 15443 | |
23860348 | 15444 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 15445 | |
1a966eab AC |
15446 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
15447 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 15448 | &setlist); |
1a966eab AC |
15449 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
15450 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
15451 | &showlist); |
15452 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
15453 | set_memory_write_packet_size, _("\ |
15454 | Set the maximum number of bytes per memory-write packet.\n\ | |
15455 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
15456 | default packet size. The actual limit is further reduced\n\ | |
fe4c3ca0 CS |
15457 | dependent on the target. Specify \"fixed\" to disable the\n\ |
15458 | further restriction and \"limit\" to enable that restriction."), | |
11cf8741 JM |
15459 | &remote_set_cmdlist); |
15460 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
15461 | set_memory_read_packet_size, _("\ |
15462 | Set the maximum number of bytes per memory-read packet.\n\ | |
15463 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
15464 | default packet size. The actual limit is further reduced\n\ | |
fe4c3ca0 CS |
15465 | dependent on the target. Specify \"fixed\" to disable the\n\ |
15466 | further restriction and \"limit\" to enable that restriction."), | |
11cf8741 JM |
15467 | &remote_set_cmdlist); |
15468 | add_cmd ("memory-write-packet-size", no_class, | |
15469 | show_memory_write_packet_size, | |
1a966eab | 15470 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
15471 | &remote_show_cmdlist); |
15472 | add_cmd ("memory-read-packet-size", no_class, | |
15473 | show_memory_read_packet_size, | |
1a966eab | 15474 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 15475 | &remote_show_cmdlist); |
c906108c | 15476 | |
055303e2 | 15477 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
15478 | &remote_hw_watchpoint_limit, _("\ |
15479 | Set the maximum number of target hardware watchpoints."), _("\ | |
15480 | Show the maximum number of target hardware watchpoints."), _("\ | |
055303e2 AB |
15481 | Specify \"unlimited\" for unlimited hardware watchpoints."), |
15482 | NULL, show_hardware_watchpoint_limit, | |
15483 | &remote_set_cmdlist, | |
15484 | &remote_show_cmdlist); | |
15485 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-length-limit", | |
15486 | no_class, | |
480a3f21 PW |
15487 | &remote_hw_watchpoint_length_limit, _("\ |
15488 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
15489 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
055303e2 AB |
15490 | Specify \"unlimited\" to allow watchpoints of unlimited size."), |
15491 | NULL, show_hardware_watchpoint_length_limit, | |
480a3f21 | 15492 | &remote_set_cmdlist, &remote_show_cmdlist); |
055303e2 | 15493 | add_setshow_zuinteger_unlimited_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
15494 | &remote_hw_breakpoint_limit, _("\ |
15495 | Set the maximum number of target hardware breakpoints."), _("\ | |
15496 | Show the maximum number of target hardware breakpoints."), _("\ | |
055303e2 AB |
15497 | Specify \"unlimited\" for unlimited hardware breakpoints."), |
15498 | NULL, show_hardware_breakpoint_limit, | |
b3f42336 | 15499 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 15500 | |
1b493192 PA |
15501 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
15502 | &remote_address_size, _("\ | |
4d28ad1e AC |
15503 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
15504 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
15505 | NULL, |
15506 | NULL, /* FIXME: i18n: */ | |
15507 | &setlist, &showlist); | |
c906108c | 15508 | |
ca4f7f8b PA |
15509 | init_all_packet_configs (); |
15510 | ||
ff52c073 | 15511 | add_packet_config_cmd (PACKET_X, "X", "binary-download", 1); |
0f71a2f6 | 15512 | |
ff52c073 | 15513 | add_packet_config_cmd (PACKET_vCont, "vCont", "verbose-resume", 0); |
506fb367 | 15514 | |
ff52c073 CS |
15515 | add_packet_config_cmd (PACKET_QPassSignals, "QPassSignals", "pass-signals", |
15516 | 0); | |
89be2091 | 15517 | |
ff52c073 CS |
15518 | add_packet_config_cmd (PACKET_QCatchSyscalls, "QCatchSyscalls", |
15519 | "catch-syscalls", 0); | |
82075af2 | 15520 | |
ff52c073 CS |
15521 | add_packet_config_cmd (PACKET_QProgramSignals, "QProgramSignals", |
15522 | "program-signals", 0); | |
9b224c5e | 15523 | |
ff52c073 CS |
15524 | add_packet_config_cmd (PACKET_QSetWorkingDir, "QSetWorkingDir", |
15525 | "set-working-dir", 0); | |
bc3b087d | 15526 | |
ff52c073 CS |
15527 | add_packet_config_cmd (PACKET_QStartupWithShell, "QStartupWithShell", |
15528 | "startup-with-shell", 0); | |
aefd8b33 | 15529 | |
ff52c073 CS |
15530 | add_packet_config_cmd (PACKET_QEnvironmentHexEncoded,"QEnvironmentHexEncoded", |
15531 | "environment-hex-encoded", 0); | |
0a2dde4a | 15532 | |
ff52c073 CS |
15533 | add_packet_config_cmd (PACKET_QEnvironmentReset, "QEnvironmentReset", |
15534 | "environment-reset", 0); | |
0a2dde4a | 15535 | |
ff52c073 CS |
15536 | add_packet_config_cmd (PACKET_QEnvironmentUnset, "QEnvironmentUnset", |
15537 | "environment-unset", 0); | |
0a2dde4a | 15538 | |
ff52c073 | 15539 | add_packet_config_cmd (PACKET_qSymbol, "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 15540 | |
ff52c073 | 15541 | add_packet_config_cmd (PACKET_P, "P", "set-register", 1); |
d471ea57 | 15542 | |
ff52c073 | 15543 | add_packet_config_cmd (PACKET_p, "p", "fetch-register", 1); |
b96ec7ac | 15544 | |
ff52c073 | 15545 | add_packet_config_cmd (PACKET_Z0, "Z0", "software-breakpoint", 0); |
d471ea57 | 15546 | |
ff52c073 | 15547 | add_packet_config_cmd (PACKET_Z1, "Z1", "hardware-breakpoint", 0); |
d471ea57 | 15548 | |
ff52c073 | 15549 | add_packet_config_cmd (PACKET_Z2, "Z2", "write-watchpoint", 0); |
d471ea57 | 15550 | |
ff52c073 | 15551 | add_packet_config_cmd (PACKET_Z3, "Z3", "read-watchpoint", 0); |
d471ea57 | 15552 | |
ff52c073 | 15553 | add_packet_config_cmd (PACKET_Z4, "Z4", "access-watchpoint", 0); |
d471ea57 | 15554 | |
ff52c073 CS |
15555 | add_packet_config_cmd (PACKET_qXfer_auxv, "qXfer:auxv:read", |
15556 | "read-aux-vector", 0); | |
802188a7 | 15557 | |
ff52c073 CS |
15558 | add_packet_config_cmd (PACKET_qXfer_exec_file, "qXfer:exec-file:read", |
15559 | "pid-to-exec-file", 0); | |
c78fa86a | 15560 | |
ff52c073 | 15561 | add_packet_config_cmd (PACKET_qXfer_features, |
23181151 DJ |
15562 | "qXfer:features:read", "target-features", 0); |
15563 | ||
ff52c073 CS |
15564 | add_packet_config_cmd (PACKET_qXfer_libraries, "qXfer:libraries:read", |
15565 | "library-info", 0); | |
cfa9d6d9 | 15566 | |
ff52c073 | 15567 | add_packet_config_cmd (PACKET_qXfer_libraries_svr4, |
2268b414 JK |
15568 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); |
15569 | ||
ff52c073 CS |
15570 | add_packet_config_cmd (PACKET_qXfer_memory_map, "qXfer:memory-map:read", |
15571 | "memory-map", 0); | |
fd79ecee | 15572 | |
ff52c073 | 15573 | add_packet_config_cmd (PACKET_qXfer_osdata, "qXfer:osdata:read", "osdata", 0); |
07e059b5 | 15574 | |
ff52c073 CS |
15575 | add_packet_config_cmd (PACKET_qXfer_threads, "qXfer:threads:read", "threads", |
15576 | 0); | |
dc146f7c | 15577 | |
ff52c073 CS |
15578 | add_packet_config_cmd (PACKET_qXfer_siginfo_read, "qXfer:siginfo:read", |
15579 | "read-siginfo-object", 0); | |
4aa995e1 | 15580 | |
ff52c073 CS |
15581 | add_packet_config_cmd (PACKET_qXfer_siginfo_write, "qXfer:siginfo:write", |
15582 | "write-siginfo-object", 0); | |
4aa995e1 | 15583 | |
ff52c073 CS |
15584 | add_packet_config_cmd (PACKET_qXfer_traceframe_info, |
15585 | "qXfer:traceframe-info:read", "traceframe-info", 0); | |
b3b9301e | 15586 | |
ff52c073 CS |
15587 | add_packet_config_cmd (PACKET_qXfer_uib, "qXfer:uib:read", |
15588 | "unwind-info-block", 0); | |
169081d0 | 15589 | |
ff52c073 CS |
15590 | add_packet_config_cmd (PACKET_qGetTLSAddr, "qGetTLSAddr", |
15591 | "get-thread-local-storage-address", 0); | |
38691318 | 15592 | |
ff52c073 CS |
15593 | add_packet_config_cmd (PACKET_qGetTIBAddr, "qGetTIBAddr", |
15594 | "get-thread-information-block-address", 0); | |
711e434b | 15595 | |
ff52c073 | 15596 | add_packet_config_cmd (PACKET_bc, "bc", "reverse-continue", 0); |
40ab02ce | 15597 | |
ff52c073 | 15598 | add_packet_config_cmd (PACKET_bs, "bs", "reverse-step", 0); |
40ab02ce | 15599 | |
ff52c073 CS |
15600 | add_packet_config_cmd (PACKET_qSupported, "qSupported", "supported-packets", |
15601 | 0); | |
be2a5f71 | 15602 | |
ff52c073 CS |
15603 | add_packet_config_cmd (PACKET_qSearch_memory, "qSearch:memory", |
15604 | "search-memory", 0); | |
08388c79 | 15605 | |
ff52c073 | 15606 | add_packet_config_cmd (PACKET_qTStatus, "qTStatus", "trace-status", 0); |
bd3eecc3 | 15607 | |
ff52c073 | 15608 | add_packet_config_cmd (PACKET_vFile_setfs, "vFile:setfs", "hostio-setfs", 0); |
15a201c8 | 15609 | |
ff52c073 | 15610 | add_packet_config_cmd (PACKET_vFile_open, "vFile:open", "hostio-open", 0); |
a6b151f1 | 15611 | |
ff52c073 | 15612 | add_packet_config_cmd (PACKET_vFile_pread, "vFile:pread", "hostio-pread", 0); |
a6b151f1 | 15613 | |
ff52c073 CS |
15614 | add_packet_config_cmd (PACKET_vFile_pwrite, "vFile:pwrite", "hostio-pwrite", |
15615 | 0); | |
a6b151f1 | 15616 | |
ff52c073 | 15617 | add_packet_config_cmd (PACKET_vFile_close, "vFile:close", "hostio-close", 0); |
a6b151f1 | 15618 | |
ff52c073 CS |
15619 | add_packet_config_cmd (PACKET_vFile_unlink, "vFile:unlink", "hostio-unlink", |
15620 | 0); | |
a6b151f1 | 15621 | |
ff52c073 CS |
15622 | add_packet_config_cmd (PACKET_vFile_readlink, "vFile:readlink", |
15623 | "hostio-readlink", 0); | |
b9e7b9c3 | 15624 | |
ff52c073 | 15625 | add_packet_config_cmd (PACKET_vFile_fstat, "vFile:fstat", "hostio-fstat", 0); |
0a93529c | 15626 | |
ff52c073 | 15627 | add_packet_config_cmd (PACKET_vAttach, "vAttach", "attach", 0); |
2d717e4f | 15628 | |
ff52c073 | 15629 | add_packet_config_cmd (PACKET_vRun, "vRun", "run", 0); |
2d717e4f | 15630 | |
ff52c073 | 15631 | add_packet_config_cmd (PACKET_QStartNoAckMode, "QStartNoAckMode", "noack", 0); |
a6f3e723 | 15632 | |
ff52c073 | 15633 | add_packet_config_cmd (PACKET_vKill, "vKill", "kill", 0); |
82f73884 | 15634 | |
ff52c073 | 15635 | add_packet_config_cmd (PACKET_qAttached, "qAttached", "query-attached", 0); |
0b16c5cf | 15636 | |
ff52c073 CS |
15637 | add_packet_config_cmd (PACKET_ConditionalTracepoints, |
15638 | "ConditionalTracepoints", "conditional-tracepoints", | |
15639 | 0); | |
3788aec7 | 15640 | |
ff52c073 CS |
15641 | add_packet_config_cmd (PACKET_ConditionalBreakpoints, |
15642 | "ConditionalBreakpoints", "conditional-breakpoints", | |
15643 | 0); | |
3788aec7 | 15644 | |
ff52c073 | 15645 | add_packet_config_cmd (PACKET_BreakpointCommands, "BreakpointCommands", |
d3ce09f5 SS |
15646 | "breakpoint-commands", 0); |
15647 | ||
ff52c073 CS |
15648 | add_packet_config_cmd (PACKET_FastTracepoints, "FastTracepoints", |
15649 | "fast-tracepoints", 0); | |
782b2b07 | 15650 | |
ff52c073 CS |
15651 | add_packet_config_cmd (PACKET_TracepointSource, "TracepointSource", |
15652 | "TracepointSource", 0); | |
409873ef | 15653 | |
ff52c073 | 15654 | add_packet_config_cmd (PACKET_QAllow, "QAllow", "allow", 0); |
d914c394 | 15655 | |
ff52c073 CS |
15656 | add_packet_config_cmd (PACKET_StaticTracepoints, "StaticTracepoints", |
15657 | "static-tracepoints", 0); | |
0fb4aa4b | 15658 | |
ff52c073 CS |
15659 | add_packet_config_cmd (PACKET_InstallInTrace, "InstallInTrace", |
15660 | "install-in-trace", 0); | |
1e4d1764 | 15661 | |
ff52c073 | 15662 | add_packet_config_cmd (PACKET_qXfer_statictrace_read, |
dda83cd7 | 15663 | "qXfer:statictrace:read", "read-sdata-object", 0); |
0fb4aa4b | 15664 | |
ff52c073 CS |
15665 | add_packet_config_cmd (PACKET_qXfer_fdpic, "qXfer:fdpic:read", |
15666 | "read-fdpic-loadmap", 0); | |
78d85199 | 15667 | |
ff52c073 CS |
15668 | add_packet_config_cmd (PACKET_QDisableRandomization, "QDisableRandomization", |
15669 | "disable-randomization", 0); | |
03583c20 | 15670 | |
ff52c073 | 15671 | add_packet_config_cmd (PACKET_QAgent, "QAgent", "agent", 0); |
d1feda86 | 15672 | |
ff52c073 CS |
15673 | add_packet_config_cmd (PACKET_QTBuffer_size, "QTBuffer:size", |
15674 | "trace-buffer-size", 0); | |
f6f899bf | 15675 | |
ff52c073 CS |
15676 | add_packet_config_cmd (PACKET_Qbtrace_off, "Qbtrace:off", "disable-btrace", |
15677 | 0); | |
9accd112 | 15678 | |
ff52c073 CS |
15679 | add_packet_config_cmd (PACKET_Qbtrace_bts, "Qbtrace:bts", "enable-btrace-bts", |
15680 | 0); | |
b20a6524 | 15681 | |
ff52c073 CS |
15682 | add_packet_config_cmd (PACKET_Qbtrace_pt, "Qbtrace:pt", "enable-btrace-pt", |
15683 | 0); | |
9accd112 | 15684 | |
ff52c073 | 15685 | add_packet_config_cmd (PACKET_qXfer_btrace, "qXfer:btrace", "read-btrace", 0); |
9accd112 | 15686 | |
ff52c073 CS |
15687 | add_packet_config_cmd (PACKET_qXfer_btrace_conf, "qXfer:btrace-conf", |
15688 | "read-btrace-conf", 0); | |
f4abbc16 | 15689 | |
ff52c073 CS |
15690 | add_packet_config_cmd (PACKET_Qbtrace_conf_bts_size, "Qbtrace-conf:bts:size", |
15691 | "btrace-conf-bts-size", 0); | |
d33501a5 | 15692 | |
ff52c073 CS |
15693 | add_packet_config_cmd (PACKET_multiprocess_feature, "multiprocess-feature", |
15694 | "multiprocess-feature", 0); | |
73b8c1fd | 15695 | |
ff52c073 CS |
15696 | add_packet_config_cmd (PACKET_swbreak_feature, "swbreak-feature", |
15697 | "swbreak-feature", 0); | |
f7e6eed5 | 15698 | |
ff52c073 CS |
15699 | add_packet_config_cmd (PACKET_hwbreak_feature, "hwbreak-feature", |
15700 | "hwbreak-feature", 0); | |
f7e6eed5 | 15701 | |
ff52c073 CS |
15702 | add_packet_config_cmd (PACKET_fork_event_feature, "fork-event-feature", |
15703 | "fork-event-feature", 0); | |
89245bc0 | 15704 | |
ff52c073 CS |
15705 | add_packet_config_cmd (PACKET_vfork_event_feature, "vfork-event-feature", |
15706 | "vfork-event-feature", 0); | |
89245bc0 | 15707 | |
ff52c073 CS |
15708 | add_packet_config_cmd (PACKET_Qbtrace_conf_pt_size, "Qbtrace-conf:pt:size", |
15709 | "btrace-conf-pt-size", 0); | |
b20a6524 | 15710 | |
ff52c073 CS |
15711 | add_packet_config_cmd (PACKET_vContSupported, "vContSupported", |
15712 | "verbose-resume-supported", 0); | |
750ce8d1 | 15713 | |
ff52c073 CS |
15714 | add_packet_config_cmd (PACKET_exec_event_feature, "exec-event-feature", |
15715 | "exec-event-feature", 0); | |
94585166 | 15716 | |
ff52c073 | 15717 | add_packet_config_cmd (PACKET_vCtrlC, "vCtrlC", "ctrl-c", 0); |
de979965 | 15718 | |
ff52c073 CS |
15719 | add_packet_config_cmd (PACKET_QThreadEvents, "QThreadEvents", "thread-events", |
15720 | 0); | |
65706a29 | 15721 | |
ff52c073 CS |
15722 | add_packet_config_cmd (PACKET_no_resumed, "N stop reply", |
15723 | "no-resumed-stop-reply", 0); | |
f2faf941 | 15724 | |
ff52c073 | 15725 | add_packet_config_cmd (PACKET_memory_tagging_feature, |
2c2e7f87 LM |
15726 | "memory-tagging-feature", "memory-tagging-feature", 0); |
15727 | ||
0b736949 DB |
15728 | /* Assert that we've registered "set remote foo-packet" commands |
15729 | for all packet configs. */ | |
ca4f7f8b PA |
15730 | { |
15731 | int i; | |
15732 | ||
15733 | for (i = 0; i < PACKET_MAX; i++) | |
15734 | { | |
15735 | /* Ideally all configs would have a command associated. Some | |
15736 | still don't though. */ | |
15737 | int excepted; | |
15738 | ||
15739 | switch (i) | |
15740 | { | |
15741 | case PACKET_QNonStop: | |
ca4f7f8b PA |
15742 | case PACKET_EnableDisableTracepoints_feature: |
15743 | case PACKET_tracenz_feature: | |
15744 | case PACKET_DisconnectedTracing_feature: | |
15745 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
15746 | case PACKET_qCRC: |
15747 | /* Additions to this list need to be well justified: | |
15748 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
15749 | excepted = 1; |
15750 | break; | |
15751 | default: | |
15752 | excepted = 0; | |
15753 | break; | |
15754 | } | |
15755 | ||
15756 | /* This catches both forgetting to add a config command, and | |
15757 | forgetting to remove a packet from the exception list. */ | |
ff52c073 | 15758 | gdb_assert (excepted == (packets_descriptions[i].name == NULL)); |
ca4f7f8b PA |
15759 | } |
15760 | } | |
15761 | ||
37a105a1 DJ |
15762 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
15763 | Z sub-packet has its own set and show commands, but users may | |
15764 | have sets to this variable in their .gdbinit files (or in their | |
15765 | documentation). */ | |
e9e68a56 | 15766 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c | 15767 | &remote_Z_packet_detect, _("\ |
590042fc PW |
15768 | Set use of remote protocol `Z' packets."), _("\ |
15769 | Show use of remote protocol `Z' packets."), _("\ | |
3b64bf98 | 15770 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 15771 | packets."), |
e9e68a56 | 15772 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
15773 | show_remote_protocol_Z_packet_cmd, |
15774 | /* FIXME: i18n: Use of remote protocol | |
15775 | `Z' packets is %s. */ | |
e9e68a56 | 15776 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 15777 | |
0743fc83 | 15778 | add_basic_prefix_cmd ("remote", class_files, _("\ |
590042fc | 15779 | Manipulate files on the remote system.\n\ |
a6b151f1 | 15780 | Transfer files to and from the remote target system."), |
2f822da5 | 15781 | &remote_cmdlist, |
0743fc83 | 15782 | 0 /* allow-unknown */, &cmdlist); |
a6b151f1 DJ |
15783 | |
15784 | add_cmd ("put", class_files, remote_put_command, | |
15785 | _("Copy a local file to the remote system."), | |
15786 | &remote_cmdlist); | |
15787 | ||
15788 | add_cmd ("get", class_files, remote_get_command, | |
15789 | _("Copy a remote file to the local system."), | |
15790 | &remote_cmdlist); | |
15791 | ||
15792 | add_cmd ("delete", class_files, remote_delete_command, | |
15793 | _("Delete a remote file."), | |
15794 | &remote_cmdlist); | |
15795 | ||
2d717e4f | 15796 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 15797 | &remote_exec_file_var, _("\ |
590042fc PW |
15798 | Set the remote pathname for \"run\"."), _("\ |
15799 | Show the remote pathname for \"run\"."), NULL, | |
94585166 DB |
15800 | set_remote_exec_file, |
15801 | show_remote_exec_file, | |
15802 | &remote_set_cmdlist, | |
15803 | &remote_show_cmdlist); | |
2d717e4f | 15804 | |
c1e36e3e PA |
15805 | add_setshow_boolean_cmd ("range-stepping", class_run, |
15806 | &use_range_stepping, _("\ | |
15807 | Enable or disable range stepping."), _("\ | |
15808 | Show whether target-assisted range stepping is enabled."), _("\ | |
15809 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
15810 | tells the target to step the corresponding range of addresses itself instead\n\ | |
15811 | of issuing multiple single-steps. This speeds up source level\n\ | |
15812 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
15813 | stepping is supported by the target. The default is on."), | |
15814 | set_range_stepping, | |
15815 | show_range_stepping, | |
15816 | &setlist, | |
15817 | &showlist); | |
15818 | ||
ed2b7c17 TT |
15819 | add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\ |
15820 | Set watchdog timer."), _("\ | |
15821 | Show watchdog timer."), _("\ | |
15822 | When non-zero, this timeout is used instead of waiting forever for a target\n\ | |
15823 | to finish a low-level step or continue operation. If the specified amount\n\ | |
15824 | of time passes without a response from the target, an error occurs."), | |
15825 | NULL, | |
15826 | show_watchdog, | |
15827 | &setlist, &showlist); | |
15828 | ||
6cc8564b LM |
15829 | add_setshow_zuinteger_unlimited_cmd ("remote-packet-max-chars", no_class, |
15830 | &remote_packet_max_chars, _("\ | |
15831 | Set the maximum number of characters to display for each remote packet."), _("\ | |
15832 | Show the maximum number of characters to display for each remote packet."), _("\ | |
15833 | Specify \"unlimited\" to display all the characters."), | |
15834 | NULL, show_remote_packet_max_chars, | |
15835 | &setdebuglist, &showdebuglist); | |
15836 | ||
02349803 SM |
15837 | add_setshow_boolean_cmd ("remote", no_class, &remote_debug, |
15838 | _("Set debugging of remote protocol."), | |
15839 | _("Show debugging of remote protocol."), | |
15840 | _("\ | |
baf2b57f SM |
15841 | When enabled, each packet sent or received with the remote target\n\ |
15842 | is displayed."), | |
02349803 SM |
15843 | NULL, |
15844 | show_remote_debug, | |
15845 | &setdebuglist, &showdebuglist); | |
baf2b57f SM |
15846 | |
15847 | add_setshow_zuinteger_unlimited_cmd ("remotetimeout", no_class, | |
15848 | &remote_timeout, _("\ | |
15849 | Set timeout limit to wait for target to respond."), _("\ | |
15850 | Show timeout limit to wait for target to respond."), _("\ | |
15851 | This value is used to set the time limit for gdb to wait for a response\n\ | |
15852 | from the target."), | |
15853 | NULL, | |
15854 | show_remote_timeout, | |
15855 | &setlist, &showlist); | |
15856 | ||
449092f6 | 15857 | /* Eventually initialize fileio. See fileio.c */ |
3f4d92eb | 15858 | initialize_remote_fileio (&remote_set_cmdlist, &remote_show_cmdlist); |
754487e2 LM |
15859 | |
15860 | #if GDB_SELF_TEST | |
15861 | selftests::register_test ("remote_memory_tagging", | |
15862 | selftests::test_memory_tagging_functions); | |
15863 | #endif | |
c906108c | 15864 | } |