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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. */ | |
357 | gdb_byte *buf = nullptr; | |
358 | /* The buffer's size. We try to read as much as fits into a packet | |
359 | at a time. */ | |
360 | size_t bufsize = 0; | |
361 | ||
362 | /* Cache hit and miss counters. */ | |
363 | ULONGEST hit_count = 0; | |
364 | ULONGEST miss_count = 0; | |
365 | }; | |
366 | ||
367 | /* Description of the remote protocol for a given architecture. */ | |
368 | ||
369 | struct packet_reg | |
370 | { | |
371 | long offset; /* Offset into G packet. */ | |
372 | long regnum; /* GDB's internal register number. */ | |
373 | LONGEST pnum; /* Remote protocol register number. */ | |
374 | int in_g_packet; /* Always part of G packet. */ | |
375 | /* long size in bytes; == register_size (target_gdbarch (), regnum); | |
376 | at present. */ | |
377 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); | |
378 | at present. */ | |
379 | }; | |
380 | ||
381 | struct remote_arch_state | |
382 | { | |
383 | explicit remote_arch_state (struct gdbarch *gdbarch); | |
384 | ||
385 | /* Description of the remote protocol registers. */ | |
386 | long sizeof_g_packet; | |
387 | ||
388 | /* Description of the remote protocol registers indexed by REGNUM | |
389 | (making an array gdbarch_num_regs in size). */ | |
390 | std::unique_ptr<packet_reg[]> regs; | |
391 | ||
392 | /* This is the size (in chars) of the first response to the ``g'' | |
393 | packet. It is used as a heuristic when determining the maximum | |
394 | size of memory-read and memory-write packets. A target will | |
395 | typically only reserve a buffer large enough to hold the ``g'' | |
396 | packet. The size does not include packet overhead (headers and | |
397 | trailers). */ | |
398 | long actual_register_packet_size; | |
399 | ||
400 | /* This is the maximum size (in chars) of a non read/write packet. | |
401 | It is also used as a cap on the size of read/write packets. */ | |
402 | long remote_packet_size; | |
403 | }; | |
404 | ||
405 | /* Description of the remote protocol state for the currently | |
406 | connected target. This is per-target state, and independent of the | |
407 | selected architecture. */ | |
408 | ||
409 | class remote_state | |
410 | { | |
411 | public: | |
412 | ||
413 | remote_state (); | |
414 | ~remote_state (); | |
415 | ||
416 | /* Get the remote arch state for GDBARCH. */ | |
417 | struct remote_arch_state *get_remote_arch_state (struct gdbarch *gdbarch); | |
418 | ||
419 | public: /* data */ | |
420 | ||
421 | /* A buffer to use for incoming packets, and its current size. The | |
422 | buffer is grown dynamically for larger incoming packets. | |
423 | Outgoing packets may also be constructed in this buffer. | |
8d64371b | 424 | The size of the buffer is always at least REMOTE_PACKET_SIZE; |
3c69da40 PA |
425 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing |
426 | packets. */ | |
8d64371b | 427 | gdb::char_vector buf; |
3c69da40 PA |
428 | |
429 | /* True if we're going through initial connection setup (finding out | |
430 | about the remote side's threads, relocating symbols, etc.). */ | |
431 | bool starting_up = false; | |
432 | ||
433 | /* If we negotiated packet size explicitly (and thus can bypass | |
434 | heuristics for the largest packet size that will not overflow | |
435 | a buffer in the stub), this will be set to that packet size. | |
436 | Otherwise zero, meaning to use the guessed size. */ | |
437 | long explicit_packet_size = 0; | |
438 | ||
3c69da40 PA |
439 | /* True, if in no ack mode. That is, neither GDB nor the stub will |
440 | expect acks from each other. The connection is assumed to be | |
441 | reliable. */ | |
442 | bool noack_mode = false; | |
443 | ||
444 | /* True if we're connected in extended remote mode. */ | |
445 | bool extended = false; | |
446 | ||
447 | /* True if we resumed the target and we're waiting for the target to | |
448 | stop. In the mean time, we can't start another command/query. | |
449 | The remote server wouldn't be ready to process it, so we'd | |
450 | timeout waiting for a reply that would never come and eventually | |
451 | we'd close the connection. This can happen in asynchronous mode | |
452 | because we allow GDB commands while the target is running. */ | |
453 | bool waiting_for_stop_reply = false; | |
454 | ||
455 | /* The status of the stub support for the various vCont actions. */ | |
456 | vCont_action_support supports_vCont; | |
5b6d1e4f PA |
457 | /* Whether vCont support was probed already. This is a workaround |
458 | until packet_support is per-connection. */ | |
459 | bool supports_vCont_probed; | |
3c69da40 PA |
460 | |
461 | /* True if the user has pressed Ctrl-C, but the target hasn't | |
462 | responded to that. */ | |
463 | bool ctrlc_pending_p = false; | |
464 | ||
465 | /* True if we saw a Ctrl-C while reading or writing from/to the | |
466 | remote descriptor. At that point it is not safe to send a remote | |
467 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
468 | process it once we're done with sending/receiving the current | |
469 | packet, which should be shortly. If however that takes too long, | |
470 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
471 | bool got_ctrlc_during_io = false; | |
472 | ||
473 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
474 | remote_open knows that we don't have a file open when the program | |
475 | starts. */ | |
476 | struct serial *remote_desc = nullptr; | |
477 | ||
478 | /* These are the threads which we last sent to the remote system. The | |
479 | TID member will be -1 for all or -2 for not sent yet. */ | |
480 | ptid_t general_thread = null_ptid; | |
481 | ptid_t continue_thread = null_ptid; | |
482 | ||
483 | /* This is the traceframe which we last selected on the remote system. | |
484 | It will be -1 if no traceframe is selected. */ | |
485 | int remote_traceframe_number = -1; | |
486 | ||
487 | char *last_pass_packet = nullptr; | |
488 | ||
489 | /* The last QProgramSignals packet sent to the target. We bypass | |
490 | sending a new program signals list down to the target if the new | |
491 | packet is exactly the same as the last we sent. IOW, we only let | |
492 | the target know about program signals list changes. */ | |
493 | char *last_program_signals_packet = nullptr; | |
494 | ||
495 | gdb_signal last_sent_signal = GDB_SIGNAL_0; | |
496 | ||
497 | bool last_sent_step = false; | |
498 | ||
499 | /* The execution direction of the last resume we got. */ | |
500 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; | |
501 | ||
502 | char *finished_object = nullptr; | |
503 | char *finished_annex = nullptr; | |
504 | ULONGEST finished_offset = 0; | |
505 | ||
506 | /* Should we try the 'ThreadInfo' query packet? | |
507 | ||
508 | This variable (NOT available to the user: auto-detect only!) | |
509 | determines whether GDB will use the new, simpler "ThreadInfo" | |
510 | query or the older, more complex syntax for thread queries. | |
511 | This is an auto-detect variable (set to true at each connect, | |
512 | and set to false when the target fails to recognize it). */ | |
513 | bool use_threadinfo_query = false; | |
514 | bool use_threadextra_query = false; | |
515 | ||
516 | threadref echo_nextthread {}; | |
517 | threadref nextthread {}; | |
518 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
519 | ||
520 | /* The state of remote notification. */ | |
521 | struct remote_notif_state *notif_state = nullptr; | |
522 | ||
523 | /* The branch trace configuration. */ | |
524 | struct btrace_config btrace_config {}; | |
525 | ||
526 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
527 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
528 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
529 | has yet been sent. */ | |
530 | int fs_pid = -1; | |
531 | ||
532 | /* A readahead cache for vFile:pread. Often, reading a binary | |
533 | involves a sequence of small reads. E.g., when parsing an ELF | |
534 | file. A readahead cache helps mostly the case of remote | |
535 | debugging on a connection with higher latency, due to the | |
536 | request/reply nature of the RSP. We only cache data for a single | |
537 | file descriptor at a time. */ | |
538 | struct readahead_cache readahead_cache; | |
539 | ||
540 | /* The list of already fetched and acknowledged stop events. This | |
541 | queue is used for notification Stop, and other notifications | |
542 | don't need queue for their events, because the notification | |
543 | events of Stop can't be consumed immediately, so that events | |
544 | should be queued first, and be consumed by remote_wait_{ns,as} | |
545 | one per time. Other notifications can consume their events | |
546 | immediately, so queue is not needed for them. */ | |
953edf2b | 547 | std::vector<stop_reply_up> stop_reply_queue; |
3c69da40 PA |
548 | |
549 | /* Asynchronous signal handle registered as event loop source for | |
550 | when we have pending events ready to be passed to the core. */ | |
551 | struct async_event_handler *remote_async_inferior_event_token = nullptr; | |
552 | ||
553 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with | |
554 | ``forever'' still use the normal timeout mechanism. This is | |
555 | currently used by the ASYNC code to guarentee that target reads | |
556 | during the initial connect always time-out. Once getpkt has been | |
557 | modified to return a timeout indication and, in turn | |
558 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
559 | this can go away. */ | |
560 | int wait_forever_enabled_p = 1; | |
561 | ||
562 | private: | |
563 | /* Mapping of remote protocol data for each gdbarch. Usually there | |
564 | is only one entry here, though we may see more with stubs that | |
565 | support multi-process. */ | |
566 | std::unordered_map<struct gdbarch *, remote_arch_state> | |
567 | m_arch_states; | |
568 | }; | |
6b8edb51 | 569 | |
d9f719f1 PA |
570 | static const target_info remote_target_info = { |
571 | "remote", | |
ae9adb36 | 572 | N_("Remote target using gdb-specific protocol"), |
d9f719f1 PA |
573 | remote_doc |
574 | }; | |
575 | ||
ff52c073 CS |
576 | /* Description of a remote packet. */ |
577 | ||
578 | struct packet_description | |
579 | { | |
580 | /* Name of the packet used for gdb output. */ | |
581 | const char *name; | |
582 | ||
583 | /* Title of the packet, used by the set/show remote name-packet | |
584 | commands to identify the individual packages and gdb output. */ | |
585 | const char *title; | |
586 | }; | |
587 | ||
588 | /* Configuration of a remote packet. */ | |
589 | ||
590 | struct packet_config | |
591 | { | |
592 | /* If auto, GDB auto-detects support for this packet or feature, | |
593 | either through qSupported, or by trying the packet and looking | |
594 | at the response. If true, GDB assumes the target supports this | |
595 | packet. If false, the packet is disabled. Configs that don't | |
596 | have an associated command always have this set to auto. */ | |
597 | enum auto_boolean detect; | |
598 | ||
599 | /* Does the target support this packet? */ | |
600 | enum packet_support support; | |
601 | }; | |
602 | ||
603 | /* This global array contains packet descriptions (name and title). */ | |
604 | static packet_description packets_descriptions[PACKET_MAX]; | |
605 | /* This global array contains the default configuration for every new | |
606 | per-remote target array. */ | |
607 | static packet_config remote_protocol_packets[PACKET_MAX]; | |
608 | ||
609 | /* Description of a remote target's features. It stores the configuration | |
610 | and provides functions to determine supported features of the target. */ | |
611 | ||
612 | struct remote_features | |
613 | { | |
614 | remote_features () | |
615 | { | |
616 | std::copy (std::begin (remote_protocol_packets), | |
617 | std::end (remote_protocol_packets), | |
618 | std::begin (m_protocol_packets)); | |
619 | } | |
620 | ~remote_features () = default; | |
621 | ||
622 | DISABLE_COPY_AND_ASSIGN (remote_features); | |
623 | ||
624 | /* Returns whether a given packet defined by its enum value is supported. */ | |
625 | enum packet_support packet_support (int) const; | |
626 | ||
627 | /* Returns the packet's corresponding "set remote foo-packet" command | |
628 | state. See struct packet_config for more details. */ | |
629 | enum auto_boolean packet_set_cmd_state (int packet) const | |
630 | { return m_protocol_packets[packet].detect; } | |
631 | ||
632 | /* Returns true if the multi-process extensions are in effect. */ | |
633 | int remote_multi_process_p () const | |
634 | { return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; } | |
635 | ||
636 | /* Returns true if fork events are supported. */ | |
637 | int remote_fork_event_p () const | |
638 | { return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; } | |
639 | ||
640 | /* Returns true if vfork events are supported. */ | |
641 | int remote_vfork_event_p () const | |
642 | { return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; } | |
643 | ||
644 | /* Returns true if exec events are supported. */ | |
645 | int remote_exec_event_p () const | |
646 | { return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; } | |
647 | ||
648 | /* Returns true if memory tagging is supported, false otherwise. */ | |
649 | bool remote_memory_tagging_p () const | |
650 | { return packet_support (PACKET_memory_tagging_feature) == PACKET_ENABLE; } | |
651 | ||
652 | /* Reset all packets back to "unknown support". Called when opening a | |
653 | new connection to a remote target. */ | |
654 | void reset_all_packet_configs_support (); | |
655 | ||
656 | /* Check result value in BUF for packet WHICH_PACKET and update the packet's | |
657 | support configuration accordingly. */ | |
658 | packet_result packet_ok (const char *buf, const int which_packet); | |
659 | packet_result packet_ok (const gdb::char_vector &buf, const int which_packet); | |
660 | ||
661 | /* The per-remote target array which stores a remote's packet | |
662 | configurations. */ | |
663 | packet_config m_protocol_packets[PACKET_MAX]; | |
664 | }; | |
665 | ||
3b3dac9b | 666 | class remote_target : public process_stratum_target |
f6ac5f3d PA |
667 | { |
668 | public: | |
3b3dac9b | 669 | remote_target () = default; |
6b8edb51 | 670 | ~remote_target () override; |
f6ac5f3d | 671 | |
d9f719f1 PA |
672 | const target_info &info () const override |
673 | { return remote_target_info; } | |
f6ac5f3d | 674 | |
121b3efd PA |
675 | const char *connection_string () override; |
676 | ||
f6ac5f3d PA |
677 | thread_control_capabilities get_thread_control_capabilities () override |
678 | { return tc_schedlock; } | |
679 | ||
d9f719f1 PA |
680 | /* Open a remote connection. */ |
681 | static void open (const char *, int); | |
682 | ||
f6ac5f3d PA |
683 | void close () override; |
684 | ||
685 | void detach (inferior *, int) override; | |
686 | void disconnect (const char *, int) override; | |
687 | ||
1192f124 | 688 | void commit_resumed () override; |
f6ac5f3d | 689 | void resume (ptid_t, int, enum gdb_signal) override; |
b60cea74 | 690 | ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override; |
b4b1a226 | 691 | bool has_pending_events () override; |
f6ac5f3d PA |
692 | |
693 | void fetch_registers (struct regcache *, int) override; | |
694 | void store_registers (struct regcache *, int) override; | |
695 | void prepare_to_store (struct regcache *) override; | |
696 | ||
f6ac5f3d PA |
697 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; |
698 | ||
699 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
700 | enum remove_bp_reason) override; | |
701 | ||
702 | ||
57810aa7 PA |
703 | bool stopped_by_sw_breakpoint () override; |
704 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 705 | |
57810aa7 | 706 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 707 | |
57810aa7 | 708 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 709 | |
57810aa7 | 710 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 711 | |
57810aa7 | 712 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 713 | |
57810aa7 | 714 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
715 | |
716 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
717 | ||
718 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
719 | ||
720 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
721 | ||
722 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
723 | ||
724 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
725 | struct expression *) override; | |
726 | ||
727 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
728 | struct expression *) override; | |
729 | ||
730 | void kill () override; | |
731 | ||
732 | void load (const char *, int) override; | |
733 | ||
734 | void mourn_inferior () override; | |
735 | ||
adc6a863 | 736 | void pass_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d PA |
737 | |
738 | int set_syscall_catchpoint (int, bool, int, | |
739 | gdb::array_view<const int>) override; | |
740 | ||
adc6a863 | 741 | void program_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d | 742 | |
57810aa7 | 743 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
744 | |
745 | const char *thread_name (struct thread_info *) override; | |
746 | ||
747 | void update_thread_list () override; | |
748 | ||
a068643d | 749 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
750 | |
751 | const char *extra_thread_info (struct thread_info *) override; | |
752 | ||
c80e29db | 753 | ptid_t get_ada_task_ptid (long lwp, ULONGEST thread) override; |
f6ac5f3d PA |
754 | |
755 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
756 | int handle_len, | |
757 | inferior *inf) override; | |
758 | ||
3d6c6204 KB |
759 | gdb::byte_vector thread_info_to_thread_handle (struct thread_info *tp) |
760 | override; | |
761 | ||
f6ac5f3d PA |
762 | void stop (ptid_t) override; |
763 | ||
764 | void interrupt () override; | |
765 | ||
766 | void pass_ctrlc () override; | |
767 | ||
768 | enum target_xfer_status xfer_partial (enum target_object object, | |
769 | const char *annex, | |
770 | gdb_byte *readbuf, | |
771 | const gdb_byte *writebuf, | |
772 | ULONGEST offset, ULONGEST len, | |
773 | ULONGEST *xfered_len) override; | |
774 | ||
775 | ULONGEST get_memory_xfer_limit () override; | |
776 | ||
777 | void rcmd (const char *command, struct ui_file *output) override; | |
778 | ||
0e90c441 | 779 | const char *pid_to_exec_file (int pid) override; |
f6ac5f3d PA |
780 | |
781 | void log_command (const char *cmd) override | |
782 | { | |
783 | serial_log_command (this, cmd); | |
784 | } | |
785 | ||
786 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
787 | CORE_ADDR load_module_addr, | |
788 | CORE_ADDR offset) override; | |
789 | ||
57810aa7 | 790 | bool can_execute_reverse () override; |
f6ac5f3d PA |
791 | |
792 | std::vector<mem_region> memory_map () override; | |
793 | ||
794 | void flash_erase (ULONGEST address, LONGEST length) override; | |
795 | ||
796 | void flash_done () override; | |
797 | ||
798 | const struct target_desc *read_description () override; | |
799 | ||
800 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
801 | const gdb_byte *pattern, ULONGEST pattern_len, | |
802 | CORE_ADDR *found_addrp) override; | |
803 | ||
57810aa7 | 804 | bool can_async_p () override; |
f6ac5f3d | 805 | |
57810aa7 | 806 | bool is_async_p () override; |
f6ac5f3d | 807 | |
4a570176 | 808 | void async (bool) override; |
f6ac5f3d | 809 | |
5b6d1e4f PA |
810 | int async_wait_fd () override; |
811 | ||
f6ac5f3d PA |
812 | void thread_events (int) override; |
813 | ||
814 | int can_do_single_step () override; | |
815 | ||
816 | void terminal_inferior () override; | |
817 | ||
818 | void terminal_ours () override; | |
819 | ||
57810aa7 | 820 | bool supports_non_stop () override; |
f6ac5f3d | 821 | |
57810aa7 | 822 | bool supports_multi_process () override; |
f6ac5f3d | 823 | |
57810aa7 | 824 | bool supports_disable_randomization () override; |
f6ac5f3d | 825 | |
57810aa7 | 826 | bool filesystem_is_local () override; |
f6ac5f3d PA |
827 | |
828 | ||
829 | int fileio_open (struct inferior *inf, const char *filename, | |
830 | int flags, int mode, int warn_if_slow, | |
b872057a | 831 | fileio_error *target_errno) override; |
f6ac5f3d PA |
832 | |
833 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 834 | ULONGEST offset, fileio_error *target_errno) override; |
f6ac5f3d PA |
835 | |
836 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 837 | ULONGEST offset, fileio_error *target_errno) override; |
f6ac5f3d | 838 | |
b872057a | 839 | int fileio_fstat (int fd, struct stat *sb, fileio_error *target_errno) override; |
f6ac5f3d | 840 | |
b872057a | 841 | int fileio_close (int fd, fileio_error *target_errno) override; |
f6ac5f3d PA |
842 | |
843 | int fileio_unlink (struct inferior *inf, | |
844 | const char *filename, | |
b872057a | 845 | fileio_error *target_errno) override; |
f6ac5f3d PA |
846 | |
847 | gdb::optional<std::string> | |
848 | fileio_readlink (struct inferior *inf, | |
849 | const char *filename, | |
b872057a | 850 | fileio_error *target_errno) override; |
f6ac5f3d | 851 | |
57810aa7 | 852 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 853 | |
57810aa7 | 854 | bool supports_string_tracing () override; |
f6ac5f3d | 855 | |
ff52c073 CS |
856 | int remote_supports_cond_tracepoints (); |
857 | ||
57810aa7 | 858 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 859 | |
ff52c073 CS |
860 | int remote_supports_fast_tracepoints (); |
861 | ||
862 | int remote_supports_static_tracepoints (); | |
863 | ||
864 | int remote_supports_install_in_trace (); | |
865 | ||
57810aa7 | 866 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
867 | |
868 | void trace_init () override; | |
869 | ||
870 | void download_tracepoint (struct bp_location *location) override; | |
871 | ||
57810aa7 | 872 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
873 | |
874 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
875 | ||
876 | void enable_tracepoint (struct bp_location *location) override; | |
877 | ||
878 | void disable_tracepoint (struct bp_location *location) override; | |
879 | ||
880 | void trace_set_readonly_regions () override; | |
881 | ||
882 | void trace_start () override; | |
883 | ||
884 | int get_trace_status (struct trace_status *ts) override; | |
885 | ||
886 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
887 | override; | |
888 | ||
889 | void trace_stop () override; | |
890 | ||
891 | int trace_find (enum trace_find_type type, int num, | |
892 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
893 | ||
57810aa7 | 894 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
895 | |
896 | int save_trace_data (const char *filename) override; | |
897 | ||
898 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
899 | ||
900 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
901 | ||
902 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
903 | ||
904 | int get_min_fast_tracepoint_insn_len () override; | |
905 | ||
906 | void set_disconnected_tracing (int val) override; | |
907 | ||
908 | void set_circular_trace_buffer (int val) override; | |
909 | ||
910 | void set_trace_buffer_size (LONGEST val) override; | |
911 | ||
57810aa7 PA |
912 | bool set_trace_notes (const char *user, const char *notes, |
913 | const char *stopnotes) override; | |
f6ac5f3d PA |
914 | |
915 | int core_of_thread (ptid_t ptid) override; | |
916 | ||
917 | int verify_memory (const gdb_byte *data, | |
918 | CORE_ADDR memaddr, ULONGEST size) override; | |
919 | ||
920 | ||
57810aa7 | 921 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
922 | |
923 | void set_permissions () override; | |
924 | ||
925 | bool static_tracepoint_marker_at (CORE_ADDR, | |
926 | struct static_tracepoint_marker *marker) | |
927 | override; | |
928 | ||
929 | std::vector<static_tracepoint_marker> | |
930 | static_tracepoint_markers_by_strid (const char *id) override; | |
931 | ||
932 | traceframe_info_up traceframe_info () override; | |
933 | ||
57810aa7 PA |
934 | bool use_agent (bool use) override; |
935 | bool can_use_agent () override; | |
f6ac5f3d | 936 | |
696c0d5e MM |
937 | struct btrace_target_info * |
938 | enable_btrace (thread_info *tp, const struct btrace_config *conf) override; | |
f6ac5f3d PA |
939 | |
940 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
941 | ||
942 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
943 | ||
944 | enum btrace_error read_btrace (struct btrace_data *data, | |
945 | struct btrace_target_info *btinfo, | |
946 | enum btrace_read_type type) override; | |
947 | ||
948 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 949 | bool augmented_libraries_svr4_read () override; |
82d1f134 | 950 | void follow_fork (inferior *, ptid_t, target_waitkind, bool, bool) override; |
294c36eb | 951 | void follow_exec (inferior *, ptid_t, const char *) override; |
f6ac5f3d PA |
952 | int insert_fork_catchpoint (int) override; |
953 | int remove_fork_catchpoint (int) override; | |
954 | int insert_vfork_catchpoint (int) override; | |
955 | int remove_vfork_catchpoint (int) override; | |
956 | int insert_exec_catchpoint (int) override; | |
957 | int remove_exec_catchpoint (int) override; | |
958 | enum exec_direction_kind execution_direction () override; | |
959 | ||
dbe692af LM |
960 | bool supports_memory_tagging () override; |
961 | ||
962 | bool fetch_memtags (CORE_ADDR address, size_t len, | |
963 | gdb::byte_vector &tags, int type) override; | |
964 | ||
965 | bool store_memtags (CORE_ADDR address, size_t len, | |
966 | const gdb::byte_vector &tags, int type) override; | |
967 | ||
6b8edb51 PA |
968 | public: /* Remote specific methods. */ |
969 | ||
970 | void remote_download_command_source (int num, ULONGEST addr, | |
971 | struct command_line *cmds); | |
972 | ||
973 | void remote_file_put (const char *local_file, const char *remote_file, | |
974 | int from_tty); | |
975 | void remote_file_get (const char *remote_file, const char *local_file, | |
976 | int from_tty); | |
977 | void remote_file_delete (const char *remote_file, int from_tty); | |
978 | ||
979 | int remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 980 | ULONGEST offset, fileio_error *remote_errno); |
6b8edb51 | 981 | int remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, |
b872057a | 982 | ULONGEST offset, fileio_error *remote_errno); |
6b8edb51 | 983 | int remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, |
b872057a | 984 | ULONGEST offset, fileio_error *remote_errno); |
6b8edb51 PA |
985 | |
986 | int remote_hostio_send_command (int command_bytes, int which_packet, | |
b872057a | 987 | fileio_error *remote_errno, const char **attachment, |
6b8edb51 PA |
988 | int *attachment_len); |
989 | int remote_hostio_set_filesystem (struct inferior *inf, | |
b872057a | 990 | fileio_error *remote_errno); |
6b8edb51 PA |
991 | /* We should get rid of this and use fileio_open directly. */ |
992 | int remote_hostio_open (struct inferior *inf, const char *filename, | |
993 | int flags, int mode, int warn_if_slow, | |
b872057a SM |
994 | fileio_error *remote_errno); |
995 | int remote_hostio_close (int fd, fileio_error *remote_errno); | |
6b8edb51 PA |
996 | |
997 | int remote_hostio_unlink (inferior *inf, const char *filename, | |
b872057a | 998 | fileio_error *remote_errno); |
6b8edb51 PA |
999 | |
1000 | struct remote_state *get_remote_state (); | |
1001 | ||
1002 | long get_remote_packet_size (void); | |
1003 | long get_memory_packet_size (struct memory_packet_config *config); | |
1004 | ||
1005 | long get_memory_write_packet_size (); | |
1006 | long get_memory_read_packet_size (); | |
1007 | ||
1008 | char *append_pending_thread_resumptions (char *p, char *endp, | |
1009 | ptid_t ptid); | |
d9f719f1 | 1010 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d | 1011 | void start_remote (int from_tty, int extended_p); |
00431a78 | 1012 | void remote_detach_1 (struct inferior *inf, int from_tty); |
6b8edb51 PA |
1013 | |
1014 | char *append_resumption (char *p, char *endp, | |
1015 | ptid_t ptid, int step, gdb_signal siggnal); | |
d51926f0 | 1016 | int remote_resume_with_vcont (ptid_t scope_ptid, int step, |
6b8edb51 PA |
1017 | gdb_signal siggnal); |
1018 | ||
64d38fdd | 1019 | thread_info *add_current_inferior_and_thread (const char *wait_status); |
6b8edb51 PA |
1020 | |
1021 | ptid_t wait_ns (ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 1022 | target_wait_flags options); |
6b8edb51 | 1023 | ptid_t wait_as (ptid_t ptid, target_waitstatus *status, |
b60cea74 | 1024 | target_wait_flags options); |
6b8edb51 PA |
1025 | |
1026 | ptid_t process_stop_reply (struct stop_reply *stop_reply, | |
1027 | target_waitstatus *status); | |
1028 | ||
8f66807b | 1029 | ptid_t select_thread_for_ambiguous_stop_reply |
c272a98c | 1030 | (const struct target_waitstatus &status); |
8f66807b | 1031 | |
8a82de58 | 1032 | void remote_notice_new_inferior (ptid_t currthread, bool executing); |
6b8edb51 | 1033 | |
1edb66d8 | 1034 | void print_one_stopped_thread (thread_info *thread); |
6b8edb51 PA |
1035 | void process_initial_stop_replies (int from_tty); |
1036 | ||
b622494e AB |
1037 | thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing, |
1038 | bool silent_p); | |
6b8edb51 PA |
1039 | |
1040 | void btrace_sync_conf (const btrace_config *conf); | |
1041 | ||
1042 | void remote_btrace_maybe_reopen (); | |
1043 | ||
1044 | void remove_new_fork_children (threads_listing_context *context); | |
28561a65 | 1045 | void kill_new_fork_children (inferior *inf); |
6b8edb51 PA |
1046 | void discard_pending_stop_replies (struct inferior *inf); |
1047 | int stop_reply_queue_length (); | |
1048 | ||
1049 | void check_pending_events_prevent_wildcard_vcont | |
2f63ec5c | 1050 | (bool *may_global_wildcard_vcont); |
6b8edb51 PA |
1051 | |
1052 | void discard_pending_stop_replies_in_queue (); | |
1053 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
1054 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
1055 | int peek_stop_reply (ptid_t ptid); | |
bb277751 | 1056 | void remote_parse_stop_reply (const char *buf, stop_reply *event); |
6b8edb51 PA |
1057 | |
1058 | void remote_stop_ns (ptid_t ptid); | |
1059 | void remote_interrupt_as (); | |
1060 | void remote_interrupt_ns (); | |
1061 | ||
1062 | char *remote_get_noisy_reply (); | |
1063 | int remote_query_attached (int pid); | |
9ab8741a | 1064 | inferior *remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 PA |
1065 | int try_open_exec); |
1066 | ||
1067 | ptid_t remote_current_thread (ptid_t oldpid); | |
e3b2741b | 1068 | ptid_t get_current_thread (const char *wait_status); |
6b8edb51 PA |
1069 | |
1070 | void set_thread (ptid_t ptid, int gen); | |
1071 | void set_general_thread (ptid_t ptid); | |
1072 | void set_continue_thread (ptid_t ptid); | |
1073 | void set_general_process (); | |
1074 | ||
1075 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
1076 | ||
cecb1912 | 1077 | int remote_unpack_thread_info_response (const char *pkt, threadref *expectedref, |
6b8edb51 PA |
1078 | gdb_ext_thread_info *info); |
1079 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
1080 | gdb_ext_thread_info *info); | |
1081 | ||
cecb1912 | 1082 | int parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
1083 | threadref *original_echo, |
1084 | threadref *resultlist, | |
1085 | int *doneflag); | |
1086 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
1087 | int result_limit, int *done, int *result_count, | |
1088 | threadref *threadlist); | |
1089 | ||
1090 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
1091 | void *context, int looplimit); | |
1092 | ||
1093 | int remote_get_threads_with_ql (threads_listing_context *context); | |
1094 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
1095 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
1096 | ||
1097 | void extended_remote_restart (); | |
1098 | ||
1099 | void get_offsets (); | |
1100 | ||
1101 | void remote_check_symbols (); | |
1102 | ||
1103 | void remote_supported_packet (const struct protocol_feature *feature, | |
1104 | enum packet_support support, | |
1105 | const char *argument); | |
1106 | ||
1107 | void remote_query_supported (); | |
1108 | ||
1109 | void remote_packet_size (const protocol_feature *feature, | |
1110 | packet_support support, const char *value); | |
1111 | ||
1112 | void remote_serial_quit_handler (); | |
1113 | ||
1114 | void remote_detach_pid (int pid); | |
1115 | ||
1116 | void remote_vcont_probe (); | |
1117 | ||
1118 | void remote_resume_with_hc (ptid_t ptid, int step, | |
1119 | gdb_signal siggnal); | |
1120 | ||
1121 | void send_interrupt_sequence (); | |
1122 | void interrupt_query (); | |
1123 | ||
42938c1a | 1124 | void remote_notif_get_pending_events (const notif_client *nc); |
6b8edb51 PA |
1125 | |
1126 | int fetch_register_using_p (struct regcache *regcache, | |
1127 | packet_reg *reg); | |
1128 | int send_g_packet (); | |
1129 | void process_g_packet (struct regcache *regcache); | |
1130 | void fetch_registers_using_g (struct regcache *regcache); | |
1131 | int store_register_using_P (const struct regcache *regcache, | |
1132 | packet_reg *reg); | |
1133 | void store_registers_using_G (const struct regcache *regcache); | |
1134 | ||
1135 | void set_remote_traceframe (); | |
1136 | ||
1137 | void check_binary_download (CORE_ADDR addr); | |
1138 | ||
1139 | target_xfer_status remote_write_bytes_aux (const char *header, | |
1140 | CORE_ADDR memaddr, | |
1141 | const gdb_byte *myaddr, | |
1142 | ULONGEST len_units, | |
1143 | int unit_size, | |
1144 | ULONGEST *xfered_len_units, | |
1145 | char packet_format, | |
1146 | int use_length); | |
1147 | ||
1148 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
1149 | const gdb_byte *myaddr, ULONGEST len, | |
1150 | int unit_size, ULONGEST *xfered_len); | |
1151 | ||
1152 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
1153 | ULONGEST len_units, | |
1154 | int unit_size, ULONGEST *xfered_len_units); | |
1155 | ||
1156 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
1157 | ULONGEST memaddr, | |
1158 | ULONGEST len, | |
1159 | int unit_size, | |
1160 | ULONGEST *xfered_len); | |
1161 | ||
1162 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
1163 | gdb_byte *myaddr, ULONGEST len, | |
1164 | int unit_size, | |
1165 | ULONGEST *xfered_len); | |
1166 | ||
1167 | packet_result remote_send_printf (const char *format, ...) | |
1168 | ATTRIBUTE_PRINTF (2, 3); | |
1169 | ||
1170 | target_xfer_status remote_flash_write (ULONGEST address, | |
1171 | ULONGEST length, ULONGEST *xfered_len, | |
1172 | const gdb_byte *data); | |
1173 | ||
1174 | int readchar (int timeout); | |
1175 | ||
1176 | void remote_serial_write (const char *str, int len); | |
1177 | ||
1178 | int putpkt (const char *buf); | |
1179 | int putpkt_binary (const char *buf, int cnt); | |
1180 | ||
8d64371b TT |
1181 | int putpkt (const gdb::char_vector &buf) |
1182 | { | |
1183 | return putpkt (buf.data ()); | |
1184 | } | |
1185 | ||
6b8edb51 | 1186 | void skip_frame (); |
8d64371b TT |
1187 | long read_frame (gdb::char_vector *buf_p); |
1188 | void getpkt (gdb::char_vector *buf, int forever); | |
1189 | int getpkt_or_notif_sane_1 (gdb::char_vector *buf, int forever, | |
6b8edb51 | 1190 | int expecting_notif, int *is_notif); |
8d64371b TT |
1191 | int getpkt_sane (gdb::char_vector *buf, int forever); |
1192 | int getpkt_or_notif_sane (gdb::char_vector *buf, int forever, | |
6b8edb51 PA |
1193 | int *is_notif); |
1194 | int remote_vkill (int pid); | |
1195 | void remote_kill_k (); | |
1196 | ||
1197 | void extended_remote_disable_randomization (int val); | |
1198 | int extended_remote_run (const std::string &args); | |
1199 | ||
1200 | void send_environment_packet (const char *action, | |
1201 | const char *packet, | |
1202 | const char *value); | |
1203 | ||
1204 | void extended_remote_environment_support (); | |
3c69da40 | 1205 | void extended_remote_set_inferior_cwd (); |
80152258 | 1206 | |
3c69da40 PA |
1207 | target_xfer_status remote_write_qxfer (const char *object_name, |
1208 | const char *annex, | |
1209 | const gdb_byte *writebuf, | |
1210 | ULONGEST offset, LONGEST len, | |
1211 | ULONGEST *xfered_len, | |
ff52c073 | 1212 | const unsigned int which_packet); |
43c3a0e4 | 1213 | |
3c69da40 PA |
1214 | target_xfer_status remote_read_qxfer (const char *object_name, |
1215 | const char *annex, | |
1216 | gdb_byte *readbuf, ULONGEST offset, | |
1217 | LONGEST len, | |
1218 | ULONGEST *xfered_len, | |
ff52c073 | 1219 | const unsigned int which_packet); |
43c3a0e4 | 1220 | |
3c69da40 | 1221 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 1222 | |
3c69da40 | 1223 | bool vcont_r_supported (); |
43c3a0e4 | 1224 | |
ff52c073 CS |
1225 | remote_features m_features; |
1226 | ||
288712bb AB |
1227 | private: |
1228 | ||
1229 | bool start_remote_1 (int from_tty, int extended_p); | |
43c3a0e4 | 1230 | |
3c69da40 PA |
1231 | /* The remote state. Don't reference this directly. Use the |
1232 | get_remote_state method instead. */ | |
1233 | remote_state m_remote_state; | |
43c3a0e4 PA |
1234 | }; |
1235 | ||
3c69da40 PA |
1236 | static const target_info extended_remote_target_info = { |
1237 | "extended-remote", | |
ae9adb36 | 1238 | N_("Extended remote target using gdb-specific protocol"), |
3c69da40 PA |
1239 | remote_doc |
1240 | }; | |
ea9c271d | 1241 | |
3c69da40 PA |
1242 | /* Set up the extended remote target by extending the standard remote |
1243 | target and adding to it. */ | |
1244 | ||
1245 | class extended_remote_target final : public remote_target | |
ea9c271d | 1246 | { |
9d6eea31 | 1247 | public: |
3c69da40 PA |
1248 | const target_info &info () const override |
1249 | { return extended_remote_target_info; } | |
9d6eea31 | 1250 | |
3c69da40 PA |
1251 | /* Open an extended-remote connection. */ |
1252 | static void open (const char *, int); | |
de44f5a7 | 1253 | |
3c69da40 PA |
1254 | bool can_create_inferior () override { return true; } |
1255 | void create_inferior (const char *, const std::string &, | |
1256 | char **, int) override; | |
9d6eea31 | 1257 | |
3c69da40 | 1258 | void detach (inferior *, int) override; |
9d6eea31 | 1259 | |
3c69da40 PA |
1260 | bool can_attach () override { return true; } |
1261 | void attach (const char *, int) override; | |
be2a5f71 | 1262 | |
3c69da40 PA |
1263 | void post_attach (int) override; |
1264 | bool supports_disable_randomization () override; | |
1265 | }; | |
1e51243a | 1266 | |
a4543480 SM |
1267 | struct stop_reply : public notif_event |
1268 | { | |
1269 | ~stop_reply (); | |
1270 | ||
1271 | /* The identifier of the thread about this event */ | |
1272 | ptid_t ptid; | |
1273 | ||
1274 | /* The remote state this event is associated with. When the remote | |
1275 | connection, represented by a remote_state object, is closed, | |
1276 | all the associated stop_reply events should be released. */ | |
1277 | struct remote_state *rs; | |
1278 | ||
1279 | struct target_waitstatus ws; | |
1280 | ||
1281 | /* The architecture associated with the expedited registers. */ | |
1282 | gdbarch *arch; | |
1283 | ||
1284 | /* Expedited registers. This makes remote debugging a bit more | |
1285 | efficient for those targets that provide critical registers as | |
1286 | part of their normal status mechanism (as another roundtrip to | |
1287 | fetch them is avoided). */ | |
1288 | std::vector<cached_reg_t> regcache; | |
1289 | ||
1290 | enum target_stop_reason stop_reason; | |
1291 | ||
1292 | CORE_ADDR watch_data_address; | |
1293 | ||
1294 | int core; | |
1295 | }; | |
1296 | ||
06c7226e SM |
1297 | /* Return TARGET as a remote_target if it is one, else nullptr. */ |
1298 | ||
1299 | static remote_target * | |
1300 | as_remote_target (process_stratum_target *target) | |
1301 | { | |
1302 | return dynamic_cast<remote_target *> (target); | |
1303 | } | |
1304 | ||
24b2de7b AB |
1305 | /* See remote.h. */ |
1306 | ||
1307 | bool | |
1308 | is_remote_target (process_stratum_target *target) | |
1309 | { | |
06c7226e | 1310 | return as_remote_target (target) != nullptr; |
24b2de7b AB |
1311 | } |
1312 | ||
3c69da40 | 1313 | /* Per-program-space data key. */ |
08b8a139 | 1314 | static const registry<program_space>::key<char, gdb::xfree_deleter<char>> |
7b4a314f | 1315 | remote_pspace_data; |
2d717e4f | 1316 | |
3c69da40 PA |
1317 | /* The variable registered as the control variable used by the |
1318 | remote exec-file commands. While the remote exec-file setting is | |
1319 | per-program-space, the set/show machinery uses this as the | |
1320 | location of the remote exec-file value. */ | |
e0700ba4 | 1321 | static std::string remote_exec_file_var; |
a6f3e723 | 1322 | |
3c69da40 PA |
1323 | /* The size to align memory write packets, when practical. The protocol |
1324 | does not guarantee any alignment, and gdb will generate short | |
1325 | writes and unaligned writes, but even as a best-effort attempt this | |
1326 | can improve bulk transfers. For instance, if a write is misaligned | |
1327 | relative to the target's data bus, the stub may need to make an extra | |
1328 | round trip fetching data from the target. This doesn't make a | |
1329 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 1330 | |
3c69da40 PA |
1331 | The alignment chosen is arbitrary; usually data bus width is |
1332 | important here, not the possibly larger cache line size. */ | |
1333 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 1334 | |
3c69da40 | 1335 | /* Prototypes for local functions. */ |
74531fed | 1336 | |
3c69da40 | 1337 | static int hexnumlen (ULONGEST num); |
782b2b07 | 1338 | |
3c69da40 | 1339 | static int stubhex (int ch); |
5d93a237 | 1340 | |
3c69da40 | 1341 | static int hexnumstr (char *, ULONGEST); |
048094ac | 1342 | |
3c69da40 | 1343 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 1344 | |
3c69da40 | 1345 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1346 | |
cecb1912 | 1347 | static int stub_unpack_int (const char *buff, int fieldlength); |
5e4a05c4 | 1348 | |
ff52c073 CS |
1349 | static void set_remote_protocol_packet_cmd (const char *args, int from_tty, |
1350 | cmd_list_element *c); | |
1351 | ||
1352 | static void show_packet_config_cmd (ui_file *file, | |
1353 | const unsigned int which_packet, | |
1354 | remote_target *remote); | |
b73be471 | 1355 | |
3c69da40 PA |
1356 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1357 | int from_tty, | |
1358 | struct cmd_list_element *c, | |
1359 | const char *value); | |
8e88304f | 1360 | |
3c69da40 | 1361 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1362 | |
3c69da40 | 1363 | static void remote_async_inferior_event_handler (gdb_client_data); |
b80fafe3 | 1364 | |
eefce37f | 1365 | static bool remote_read_description_p (struct target_ops *target); |
88b496c3 | 1366 | |
05be00a8 | 1367 | static void remote_console_output (const char *msg); |
5965e028 | 1368 | |
3c69da40 | 1369 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1370 | |
5b6d1e4f | 1371 | static void remote_unpush_and_throw (remote_target *target); |
15a201c8 | 1372 | |
3c69da40 | 1373 | /* For "remote". */ |
80152258 | 1374 | |
3c69da40 | 1375 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1376 | |
3c69da40 | 1377 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1378 | |
3c69da40 PA |
1379 | static struct cmd_list_element *remote_set_cmdlist; |
1380 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1381 | |
3c69da40 | 1382 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1383 | |
491144b5 | 1384 | static bool use_range_stepping = true; |
3c69da40 | 1385 | |
c9d22089 SM |
1386 | /* From the remote target's point of view, each thread is in one of these three |
1387 | states. */ | |
1388 | enum class resume_state | |
1389 | { | |
1390 | /* Not resumed - we haven't been asked to resume this thread. */ | |
1391 | NOT_RESUMED, | |
1392 | ||
1393 | /* We have been asked to resume this thread, but haven't sent a vCont action | |
1394 | for it yet. We'll need to consider it next time commit_resume is | |
1395 | called. */ | |
1396 | RESUMED_PENDING_VCONT, | |
1397 | ||
1398 | /* We have been asked to resume this thread, and we have sent a vCont action | |
1399 | for it. */ | |
1400 | RESUMED, | |
1401 | }; | |
1402 | ||
1403 | /* Information about a thread's pending vCont-resume. Used when a thread is in | |
1404 | the remote_resume_state::RESUMED_PENDING_VCONT state. remote_target::resume | |
1405 | stores this information which is then picked up by | |
1406 | remote_target::commit_resume to know which is the proper action for this | |
1407 | thread to include in the vCont packet. */ | |
1408 | struct resumed_pending_vcont_info | |
1409 | { | |
1410 | /* True if the last resume call for this thread was a step request, false | |
1411 | if a continue request. */ | |
1412 | bool step; | |
1413 | ||
1414 | /* The signal specified in the last resume call for this thread. */ | |
1415 | gdb_signal sig; | |
1416 | }; | |
1417 | ||
7aabaf9d SM |
1418 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1419 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1420 | { |
7aabaf9d SM |
1421 | std::string extra; |
1422 | std::string name; | |
1423 | int core = -1; | |
799a2abe | 1424 | |
f6327dcb KB |
1425 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1426 | sequence of bytes. */ | |
7aabaf9d | 1427 | gdb::byte_vector thread_handle; |
f6327dcb | 1428 | |
799a2abe | 1429 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1430 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1431 | |
1432 | /* This is set to the data address of the access causing the target | |
1433 | to stop for a watchpoint. */ | |
7aabaf9d | 1434 | CORE_ADDR watch_data_address = 0; |
85ad3aaf | 1435 | |
c9d22089 | 1436 | /* Get the thread's resume state. */ |
a6c11cbb | 1437 | enum resume_state get_resume_state () const |
c9d22089 SM |
1438 | { |
1439 | return m_resume_state; | |
1440 | } | |
1441 | ||
1442 | /* Put the thread in the NOT_RESUMED state. */ | |
1443 | void set_not_resumed () | |
1444 | { | |
1445 | m_resume_state = resume_state::NOT_RESUMED; | |
1446 | } | |
85ad3aaf | 1447 | |
c9d22089 SM |
1448 | /* Put the thread in the RESUMED_PENDING_VCONT state. */ |
1449 | void set_resumed_pending_vcont (bool step, gdb_signal sig) | |
1450 | { | |
1451 | m_resume_state = resume_state::RESUMED_PENDING_VCONT; | |
1452 | m_resumed_pending_vcont_info.step = step; | |
1453 | m_resumed_pending_vcont_info.sig = sig; | |
1454 | } | |
85ad3aaf | 1455 | |
c9d22089 | 1456 | /* Get the information this thread's pending vCont-resumption. |
85ad3aaf | 1457 | |
c9d22089 SM |
1458 | Must only be called if the thread is in the RESUMED_PENDING_VCONT resume |
1459 | state. */ | |
1460 | const struct resumed_pending_vcont_info &resumed_pending_vcont_info () const | |
1461 | { | |
1462 | gdb_assert (m_resume_state == resume_state::RESUMED_PENDING_VCONT); | |
1463 | ||
1464 | return m_resumed_pending_vcont_info; | |
1465 | } | |
1466 | ||
1467 | /* Put the thread in the VCONT_RESUMED state. */ | |
1468 | void set_resumed () | |
1469 | { | |
1470 | m_resume_state = resume_state::RESUMED; | |
1471 | } | |
1472 | ||
1473 | private: | |
1474 | /* Resume state for this thread. This is used to implement vCont action | |
1475 | coalescing (only when the target operates in non-stop mode). | |
1476 | ||
1477 | remote_target::resume moves the thread to the RESUMED_PENDING_VCONT state, | |
1478 | which notes that this thread must be considered in the next commit_resume | |
1479 | call. | |
1480 | ||
1481 | remote_target::commit_resume sends a vCont packet with actions for the | |
1482 | threads in the RESUMED_PENDING_VCONT state and moves them to the | |
1483 | VCONT_RESUMED state. | |
1484 | ||
1485 | When reporting a stop to the core for a thread, that thread is moved back | |
1486 | to the NOT_RESUMED state. */ | |
1487 | enum resume_state m_resume_state = resume_state::NOT_RESUMED; | |
1488 | ||
1489 | /* Extra info used if the thread is in the RESUMED_PENDING_VCONT state. */ | |
1490 | struct resumed_pending_vcont_info m_resumed_pending_vcont_info; | |
dc146f7c VP |
1491 | }; |
1492 | ||
de44f5a7 | 1493 | remote_state::remote_state () |
8d64371b | 1494 | : buf (400) |
de44f5a7 | 1495 | { |
de44f5a7 PA |
1496 | } |
1497 | ||
1498 | remote_state::~remote_state () | |
1499 | { | |
1500 | xfree (this->last_pass_packet); | |
1501 | xfree (this->last_program_signals_packet); | |
de44f5a7 PA |
1502 | xfree (this->finished_object); |
1503 | xfree (this->finished_annex); | |
cf792862 TT |
1504 | } |
1505 | ||
35b1e5cc SS |
1506 | /* Utility: generate error from an incoming stub packet. */ |
1507 | static void | |
1508 | trace_error (char *buf) | |
1509 | { | |
1510 | if (*buf++ != 'E') | |
1511 | return; /* not an error msg */ | |
1512 | switch (*buf) | |
1513 | { | |
1514 | case '1': /* malformed packet error */ | |
1515 | if (*++buf == '0') /* general case: */ | |
1516 | error (_("remote.c: error in outgoing packet.")); | |
1517 | else | |
1518 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1519 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1520 | default: |
1521 | error (_("Target returns error code '%s'."), buf); | |
1522 | } | |
1523 | } | |
1524 | ||
1525 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1526 | |
6b8edb51 PA |
1527 | char * |
1528 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1529 | { |
b6bb3468 PA |
1530 | struct remote_state *rs = get_remote_state (); |
1531 | ||
35b1e5cc SS |
1532 | do /* Loop on reply from remote stub. */ |
1533 | { | |
1534 | char *buf; | |
a744cf53 | 1535 | |
0df8b418 | 1536 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b TT |
1537 | getpkt (&rs->buf, 0); |
1538 | buf = rs->buf.data (); | |
ad91cd99 | 1539 | if (buf[0] == 'E') |
35b1e5cc | 1540 | trace_error (buf); |
61012eef | 1541 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1542 | { |
1543 | ULONGEST ul; | |
1544 | CORE_ADDR from, to, org_to; | |
256642e8 | 1545 | const char *p, *pp; |
dde08ee1 | 1546 | int adjusted_size = 0; |
7556d4a4 | 1547 | int relocated = 0; |
dde08ee1 PA |
1548 | |
1549 | p = buf + strlen ("qRelocInsn:"); | |
1550 | pp = unpack_varlen_hex (p, &ul); | |
1551 | if (*pp != ';') | |
cb91c06a | 1552 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1553 | from = ul; |
1554 | ||
1555 | p = pp + 1; | |
a9cbf802 | 1556 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1557 | to = ul; |
1558 | ||
1559 | org_to = to; | |
1560 | ||
a70b8144 | 1561 | try |
dde08ee1 | 1562 | { |
f5656ead | 1563 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 1564 | relocated = 1; |
dde08ee1 | 1565 | } |
230d2906 | 1566 | catch (const gdb_exception &ex) |
7556d4a4 PA |
1567 | { |
1568 | if (ex.error == MEMORY_ERROR) | |
1569 | { | |
1570 | /* Propagate memory errors silently back to the | |
1571 | target. The stub may have limited the range of | |
1572 | addresses we can write to, for example. */ | |
1573 | } | |
1574 | else | |
1575 | { | |
1576 | /* Something unexpectedly bad happened. Be verbose | |
1577 | so we can tell what, and propagate the error back | |
1578 | to the stub, so it doesn't get stuck waiting for | |
1579 | a response. */ | |
1580 | exception_fprintf (gdb_stderr, ex, | |
1581 | _("warning: relocating instruction: ")); | |
1582 | } | |
1583 | putpkt ("E01"); | |
1584 | } | |
1585 | ||
1586 | if (relocated) | |
dde08ee1 PA |
1587 | { |
1588 | adjusted_size = to - org_to; | |
1589 | ||
8d64371b | 1590 | xsnprintf (buf, rs->buf.size (), "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1591 | putpkt (buf); |
1592 | } | |
dde08ee1 | 1593 | } |
ad91cd99 | 1594 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1595 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1596 | else | |
0df8b418 | 1597 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1598 | } |
1599 | while (1); | |
1600 | } | |
3c3bea1c | 1601 | |
9d6eea31 PA |
1602 | struct remote_arch_state * |
1603 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1604 | { |
43c3a0e4 PA |
1605 | remote_arch_state *rsa; |
1606 | ||
1607 | auto it = this->m_arch_states.find (gdbarch); | |
1608 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1609 | { |
43c3a0e4 PA |
1610 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1611 | std::forward_as_tuple (gdbarch), | |
1612 | std::forward_as_tuple (gdbarch)); | |
1613 | rsa = &p.first->second; | |
9d6eea31 PA |
1614 | |
1615 | /* Make sure that the packet buffer is plenty big enough for | |
1616 | this architecture. */ | |
8d64371b TT |
1617 | if (this->buf.size () < rsa->remote_packet_size) |
1618 | this->buf.resize (2 * rsa->remote_packet_size); | |
9d6eea31 | 1619 | } |
43c3a0e4 PA |
1620 | else |
1621 | rsa = &it->second; | |
1622 | ||
1623 | return rsa; | |
d01949b6 AC |
1624 | } |
1625 | ||
0b83947e DJ |
1626 | /* Fetch the global remote target state. */ |
1627 | ||
6b8edb51 PA |
1628 | remote_state * |
1629 | remote_target::get_remote_state () | |
0b83947e DJ |
1630 | { |
1631 | /* Make sure that the remote architecture state has been | |
1632 | initialized, because doing so might reallocate rs->buf. Any | |
1633 | function which calls getpkt also needs to be mindful of changes | |
1634 | to rs->buf, but this call limits the number of places which run | |
1635 | into trouble. */ | |
3c69da40 | 1636 | m_remote_state.get_remote_arch_state (target_gdbarch ()); |
0b83947e | 1637 | |
3c69da40 | 1638 | return &m_remote_state; |
0b83947e DJ |
1639 | } |
1640 | ||
94585166 DB |
1641 | /* Fetch the remote exec-file from the current program space. */ |
1642 | ||
1643 | static const char * | |
1644 | get_remote_exec_file (void) | |
1645 | { | |
1646 | char *remote_exec_file; | |
1647 | ||
7b4a314f | 1648 | remote_exec_file = remote_pspace_data.get (current_program_space); |
94585166 DB |
1649 | if (remote_exec_file == NULL) |
1650 | return ""; | |
1651 | ||
1652 | return remote_exec_file; | |
1653 | } | |
1654 | ||
1655 | /* Set the remote exec file for PSPACE. */ | |
1656 | ||
1657 | static void | |
1658 | set_pspace_remote_exec_file (struct program_space *pspace, | |
7b4a314f | 1659 | const char *remote_exec_file) |
94585166 | 1660 | { |
7b4a314f | 1661 | char *old_file = remote_pspace_data.get (pspace); |
94585166 DB |
1662 | |
1663 | xfree (old_file); | |
7b4a314f | 1664 | remote_pspace_data.set (pspace, xstrdup (remote_exec_file)); |
94585166 DB |
1665 | } |
1666 | ||
1667 | /* The "set/show remote exec-file" set command hook. */ | |
1668 | ||
1669 | static void | |
eb4c3f4a | 1670 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1671 | struct cmd_list_element *c) |
1672 | { | |
e0700ba4 SM |
1673 | set_pspace_remote_exec_file (current_program_space, |
1674 | remote_exec_file_var.c_str ()); | |
94585166 DB |
1675 | } |
1676 | ||
1677 | /* The "set/show remote exec-file" show command hook. */ | |
1678 | ||
1679 | static void | |
1680 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1681 | struct cmd_list_element *cmd, const char *value) | |
1682 | { | |
6cb06a8c | 1683 | gdb_printf (file, "%s\n", get_remote_exec_file ()); |
94585166 DB |
1684 | } |
1685 | ||
c21236dc PA |
1686 | static int |
1687 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1688 | { |
74ca34ce | 1689 | int regnum, num_remote_regs, offset; |
74ca34ce | 1690 | struct packet_reg **remote_regs; |
ea9c271d | 1691 | |
4a22f64d | 1692 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1693 | { |
c21236dc | 1694 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1695 | |
4a22f64d | 1696 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1697 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1698 | r->pnum = -1; | |
1699 | else | |
1700 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1701 | ||
b323314b | 1702 | r->regnum = regnum; |
74ca34ce DJ |
1703 | } |
1704 | ||
1705 | /* Define the g/G packet format as the contents of each register | |
1706 | with a remote protocol number, in order of ascending protocol | |
1707 | number. */ | |
1708 | ||
224c3ddb | 1709 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1710 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1711 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1712 | regnum++) |
c21236dc PA |
1713 | if (regs[regnum].pnum != -1) |
1714 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1715 | |
39ef2f62 CB |
1716 | std::sort (remote_regs, remote_regs + num_remote_regs, |
1717 | [] (const packet_reg *a, const packet_reg *b) | |
1718 | { return a->pnum < b->pnum; }); | |
74ca34ce DJ |
1719 | |
1720 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1721 | { | |
1722 | remote_regs[regnum]->in_g_packet = 1; | |
1723 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1724 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1725 | } |
1726 | ||
c21236dc PA |
1727 | return offset; |
1728 | } | |
1729 | ||
1730 | /* Given the architecture described by GDBARCH, return the remote | |
1731 | protocol register's number and the register's offset in the g/G | |
1732 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1733 | If the target does not have a mapping for REGNUM, return false, | |
1734 | otherwise, return true. */ | |
1735 | ||
1736 | int | |
1737 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1738 | int *pnum, int *poffset) | |
1739 | { | |
c21236dc PA |
1740 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1741 | ||
b80406ac | 1742 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1743 | |
b80406ac | 1744 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1745 | |
1746 | *pnum = regs[regnum].pnum; | |
1747 | *poffset = regs[regnum].offset; | |
1748 | ||
c21236dc PA |
1749 | return *pnum != -1; |
1750 | } | |
1751 | ||
9d6eea31 | 1752 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1753 | { |
c21236dc PA |
1754 | /* Use the architecture to build a regnum<->pnum table, which will be |
1755 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1756 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1757 | |
74ca34ce DJ |
1758 | /* Record the maximum possible size of the g packet - it may turn out |
1759 | to be smaller. */ | |
9d6eea31 PA |
1760 | this->sizeof_g_packet |
1761 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1762 | |
0df8b418 | 1763 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1764 | remote stubs have a hardwired buffer size of 400 bytes |
1765 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1766 | as the maximum packet-size to ensure that the packet and an extra | |
1767 | NUL character can always fit in the buffer. This stops GDB | |
1768 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1769 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1770 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1771 | |
ea9c271d | 1772 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1773 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1774 | |
1775 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1776 | default, adjust the size accordingly. Remember that each byte is |
1777 | encoded as two characters. 32 is the overhead for the packet | |
1778 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1779 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1780 | little. */ |
9d6eea31 PA |
1781 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1782 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1783 | } |
1784 | ||
6b8edb51 PA |
1785 | /* Get a pointer to the current remote target. If not connected to a |
1786 | remote target, return NULL. */ | |
1787 | ||
1788 | static remote_target * | |
1789 | get_current_remote_target () | |
1790 | { | |
5b6d1e4f | 1791 | target_ops *proc_target = current_inferior ()->process_target (); |
6b8edb51 PA |
1792 | return dynamic_cast<remote_target *> (proc_target); |
1793 | } | |
1794 | ||
ea9c271d DJ |
1795 | /* Return the current allowed size of a remote packet. This is |
1796 | inferred from the current architecture, and should be used to | |
1797 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1798 | long |
1799 | remote_target::get_remote_packet_size () | |
ea9c271d | 1800 | { |
be2a5f71 | 1801 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1802 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1803 | |
be2a5f71 DJ |
1804 | if (rs->explicit_packet_size) |
1805 | return rs->explicit_packet_size; | |
1806 | ||
ea9c271d | 1807 | return rsa->remote_packet_size; |
d01949b6 AC |
1808 | } |
1809 | ||
ad10f812 | 1810 | static struct packet_reg * |
5cd63fda PA |
1811 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1812 | long regnum) | |
ad10f812 | 1813 | { |
5cd63fda | 1814 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1815 | return NULL; |
1816 | else | |
ad10f812 | 1817 | { |
ea9c271d | 1818 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1819 | |
b323314b AC |
1820 | gdb_assert (r->regnum == regnum); |
1821 | return r; | |
ad10f812 | 1822 | } |
ad10f812 AC |
1823 | } |
1824 | ||
1825 | static struct packet_reg * | |
5cd63fda PA |
1826 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1827 | LONGEST pnum) | |
ad10f812 | 1828 | { |
b323314b | 1829 | int i; |
a744cf53 | 1830 | |
5cd63fda | 1831 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1832 | { |
ea9c271d | 1833 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1834 | |
b323314b AC |
1835 | if (r->pnum == pnum) |
1836 | return r; | |
ad10f812 AC |
1837 | } |
1838 | return NULL; | |
d01949b6 AC |
1839 | } |
1840 | ||
9a7071a8 JB |
1841 | /* Allow the user to specify what sequence to send to the remote |
1842 | when he requests a program interruption: Although ^C is usually | |
1843 | what remote systems expect (this is the default, here), it is | |
1844 | sometimes preferable to send a break. On other systems such | |
1845 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1846 | is required in order to interrupt the execution. */ | |
1847 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1848 | const char interrupt_sequence_break[] = "BREAK"; | |
1849 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1850 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1851 | { |
1852 | interrupt_sequence_control_c, | |
1853 | interrupt_sequence_break, | |
1854 | interrupt_sequence_break_g, | |
1855 | NULL | |
1856 | }; | |
1857 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1858 | ||
1859 | static void | |
1860 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1861 | struct cmd_list_element *c, | |
1862 | const char *value) | |
1863 | { | |
1864 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
6cb06a8c TT |
1865 | gdb_printf (file, |
1866 | _("Send the ASCII ETX character (Ctrl-c) " | |
1867 | "to the remote target to interrupt the " | |
1868 | "execution of the program.\n")); | |
9a7071a8 | 1869 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
6cb06a8c TT |
1870 | gdb_printf (file, |
1871 | _("send a break signal to the remote target " | |
1872 | "to interrupt the execution of the program.\n")); | |
9a7071a8 | 1873 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
6cb06a8c TT |
1874 | gdb_printf (file, |
1875 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1876 | "the remote target to interrupt the execution " | |
1877 | "of Linux kernel.\n")); | |
9a7071a8 | 1878 | else |
f34652de | 1879 | internal_error (_("Invalid value for interrupt_sequence_mode: %s."), |
9a7071a8 JB |
1880 | interrupt_sequence_mode); |
1881 | } | |
6426a772 | 1882 | |
9a7071a8 JB |
1883 | /* This boolean variable specifies whether interrupt_sequence is sent |
1884 | to the remote target when gdb connects to it. | |
1885 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1886 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
491144b5 | 1887 | static bool interrupt_on_connect = false; |
c906108c | 1888 | |
9a7071a8 JB |
1889 | /* This variable is used to implement the "set/show remotebreak" commands. |
1890 | Since these commands are now deprecated in favor of "set/show remote | |
1891 | interrupt-sequence", it no longer has any effect on the code. */ | |
491144b5 | 1892 | static bool remote_break; |
c906108c | 1893 | |
9a7071a8 | 1894 | static void |
eb4c3f4a | 1895 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1896 | { |
1897 | if (remote_break) | |
1898 | interrupt_sequence_mode = interrupt_sequence_break; | |
1899 | else | |
1900 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1901 | } | |
1902 | ||
1903 | static void | |
1904 | show_remotebreak (struct ui_file *file, int from_tty, | |
1905 | struct cmd_list_element *c, | |
1906 | const char *value) | |
1907 | { | |
1908 | } | |
1909 | ||
c906108c SS |
1910 | /* This variable sets the number of bits in an address that are to be |
1911 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1912 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1913 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1914 | initial implementation of remote.c restricted the address sent in | |
1915 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1916 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1917 | address was never sent. Since fixing this bug may cause a break in | |
85102364 | 1918 | some remote targets this variable is principally provided to |
23860348 | 1919 | facilitate backward compatibility. */ |
c906108c | 1920 | |
883b9c6c | 1921 | static unsigned int remote_address_size; |
c906108c | 1922 | |
11cf8741 | 1923 | \f |
11cf8741 | 1924 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1925 | memory read/write packet. MIN (rsa->remote_packet_size, |
1926 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1927 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1928 | (speed up transfers). The variables ``preferred_*'' (the user |
1929 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1930 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1931 | |
1932 | struct memory_packet_config | |
1933 | { | |
a121b7c1 | 1934 | const char *name; |
11cf8741 JM |
1935 | long size; |
1936 | int fixed_p; | |
1937 | }; | |
1938 | ||
cc0be08f PA |
1939 | /* The default max memory-write-packet-size, when the setting is |
1940 | "fixed". The 16k is historical. (It came from older GDB's using | |
1941 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1942 | don't cope very well with large alloca calls.) */ | |
1943 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1944 | |
1945 | /* The minimum remote packet size for memory transfers. Ensures we | |
1946 | can write at least one byte. */ | |
1947 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1948 | ||
cc0be08f PA |
1949 | /* Get the memory packet size, assuming it is fixed. */ |
1950 | ||
1951 | static long | |
1952 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1953 | { | |
1954 | gdb_assert (config->fixed_p); | |
1955 | ||
1956 | if (config->size <= 0) | |
1957 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1958 | else | |
1959 | return config->size; | |
1960 | } | |
1961 | ||
11cf8741 JM |
1962 | /* Compute the current size of a read/write packet. Since this makes |
1963 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1964 | ||
6b8edb51 PA |
1965 | long |
1966 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 1967 | { |
d01949b6 | 1968 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1969 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1970 | |
11cf8741 JM |
1971 | long what_they_get; |
1972 | if (config->fixed_p) | |
cc0be08f | 1973 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1974 | else |
1975 | { | |
ea9c271d | 1976 | what_they_get = get_remote_packet_size (); |
23860348 | 1977 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1978 | if (config->size > 0 |
1979 | && what_they_get > config->size) | |
1980 | what_they_get = config->size; | |
be2a5f71 DJ |
1981 | |
1982 | /* Limit it to the size of the targets ``g'' response unless we have | |
1983 | permission from the stub to use a larger packet size. */ | |
1984 | if (rs->explicit_packet_size == 0 | |
1985 | && rsa->actual_register_packet_size > 0 | |
1986 | && what_they_get > rsa->actual_register_packet_size) | |
1987 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1988 | } |
a5c0808e PA |
1989 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1990 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1991 | |
1992 | /* Make sure there is room in the global buffer for this packet | |
1993 | (including its trailing NUL byte). */ | |
8d64371b TT |
1994 | if (rs->buf.size () < what_they_get + 1) |
1995 | rs->buf.resize (2 * what_they_get); | |
6d820c5c | 1996 | |
11cf8741 JM |
1997 | return what_they_get; |
1998 | } | |
1999 | ||
0df8b418 | 2000 | /* Update the size of a read/write packet. If they user wants |
23860348 | 2001 | something really big then do a sanity check. */ |
11cf8741 JM |
2002 | |
2003 | static void | |
ac88e2de | 2004 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
2005 | { |
2006 | int fixed_p = config->fixed_p; | |
2007 | long size = config->size; | |
a744cf53 | 2008 | |
11cf8741 | 2009 | if (args == NULL) |
8a3fe4f8 | 2010 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
2011 | else if (strcmp (args, "hard") == 0 |
2012 | || strcmp (args, "fixed") == 0) | |
2013 | fixed_p = 1; | |
2014 | else if (strcmp (args, "soft") == 0 | |
2015 | || strcmp (args, "limit") == 0) | |
2016 | fixed_p = 0; | |
2017 | else | |
2018 | { | |
2019 | char *end; | |
a744cf53 | 2020 | |
11cf8741 JM |
2021 | size = strtoul (args, &end, 0); |
2022 | if (args == end) | |
8a3fe4f8 | 2023 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
2024 | |
2025 | /* Instead of explicitly capping the size of a packet to or | |
2026 | disallowing it, the user is allowed to set the size to | |
2027 | something arbitrarily large. */ | |
11cf8741 | 2028 | } |
a5c0808e | 2029 | |
23860348 | 2030 | /* Extra checks? */ |
11cf8741 JM |
2031 | if (fixed_p && !config->fixed_p) |
2032 | { | |
cc0be08f PA |
2033 | /* So that the query shows the correct value. */ |
2034 | long query_size = (size <= 0 | |
2035 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
2036 | : size); | |
2037 | ||
e2e0b3e5 AC |
2038 | if (! query (_("The target may not be able to correctly handle a %s\n" |
2039 | "of %ld bytes. Change the packet size? "), | |
cc0be08f | 2040 | config->name, query_size)) |
8a3fe4f8 | 2041 | error (_("Packet size not changed.")); |
11cf8741 | 2042 | } |
23860348 | 2043 | /* Update the config. */ |
11cf8741 JM |
2044 | config->fixed_p = fixed_p; |
2045 | config->size = size; | |
2046 | } | |
2047 | ||
2048 | static void | |
2049 | show_memory_packet_size (struct memory_packet_config *config) | |
2050 | { | |
cc0be08f | 2051 | if (config->size == 0) |
6cb06a8c | 2052 | gdb_printf (_("The %s is 0 (default). "), config->name); |
cc0be08f | 2053 | else |
6cb06a8c | 2054 | gdb_printf (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 2055 | if (config->fixed_p) |
6cb06a8c TT |
2056 | gdb_printf (_("Packets are fixed at %ld bytes.\n"), |
2057 | get_fixed_memory_packet_size (config)); | |
11cf8741 | 2058 | else |
cc0be08f | 2059 | { |
6b8edb51 | 2060 | remote_target *remote = get_current_remote_target (); |
cc0be08f | 2061 | |
6b8edb51 | 2062 | if (remote != NULL) |
6cb06a8c TT |
2063 | gdb_printf (_("Packets are limited to %ld bytes.\n"), |
2064 | remote->get_memory_packet_size (config)); | |
cc0be08f | 2065 | else |
0426ad51 TT |
2066 | gdb_puts ("The actual limit will be further reduced " |
2067 | "dependent on the target.\n"); | |
cc0be08f | 2068 | } |
11cf8741 JM |
2069 | } |
2070 | ||
5b6d1e4f | 2071 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
2072 | static struct memory_packet_config memory_write_packet_config = |
2073 | { | |
2074 | "memory-write-packet-size", | |
2075 | }; | |
2076 | ||
2077 | static void | |
ac88e2de | 2078 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
2079 | { |
2080 | set_memory_packet_size (args, &memory_write_packet_config); | |
2081 | } | |
2082 | ||
2083 | static void | |
ac88e2de | 2084 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
2085 | { |
2086 | show_memory_packet_size (&memory_write_packet_config); | |
2087 | } | |
2088 | ||
055303e2 AB |
2089 | /* Show the number of hardware watchpoints that can be used. */ |
2090 | ||
2091 | static void | |
2092 | show_hardware_watchpoint_limit (struct ui_file *file, int from_tty, | |
2093 | struct cmd_list_element *c, | |
2094 | const char *value) | |
2095 | { | |
6cb06a8c TT |
2096 | gdb_printf (file, _("The maximum number of target hardware " |
2097 | "watchpoints is %s.\n"), value); | |
055303e2 AB |
2098 | } |
2099 | ||
2100 | /* Show the length limit (in bytes) for hardware watchpoints. */ | |
2101 | ||
2102 | static void | |
2103 | show_hardware_watchpoint_length_limit (struct ui_file *file, int from_tty, | |
2104 | struct cmd_list_element *c, | |
2105 | const char *value) | |
2106 | { | |
6cb06a8c TT |
2107 | gdb_printf (file, _("The maximum length (in bytes) of a target " |
2108 | "hardware watchpoint is %s.\n"), value); | |
055303e2 AB |
2109 | } |
2110 | ||
2111 | /* Show the number of hardware breakpoints that can be used. */ | |
2112 | ||
2113 | static void | |
2114 | show_hardware_breakpoint_limit (struct ui_file *file, int from_tty, | |
2115 | struct cmd_list_element *c, | |
2116 | const char *value) | |
2117 | { | |
6cb06a8c TT |
2118 | gdb_printf (file, _("The maximum number of target hardware " |
2119 | "breakpoints is %s.\n"), value); | |
055303e2 AB |
2120 | } |
2121 | ||
6cc8564b LM |
2122 | /* Controls the maximum number of characters to display in the debug output |
2123 | for each remote packet. The remaining characters are omitted. */ | |
2124 | ||
2125 | static int remote_packet_max_chars = 512; | |
2126 | ||
2127 | /* Show the maximum number of characters to display for each remote packet | |
2128 | when remote debugging is enabled. */ | |
2129 | ||
2130 | static void | |
2131 | show_remote_packet_max_chars (struct ui_file *file, int from_tty, | |
2132 | struct cmd_list_element *c, | |
2133 | const char *value) | |
2134 | { | |
6cb06a8c TT |
2135 | gdb_printf (file, _("Number of remote packet characters to " |
2136 | "display is %s.\n"), value); | |
6cc8564b LM |
2137 | } |
2138 | ||
6b8edb51 PA |
2139 | long |
2140 | remote_target::get_memory_write_packet_size () | |
11cf8741 JM |
2141 | { |
2142 | return get_memory_packet_size (&memory_write_packet_config); | |
2143 | } | |
2144 | ||
5b6d1e4f | 2145 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
2146 | static struct memory_packet_config memory_read_packet_config = |
2147 | { | |
2148 | "memory-read-packet-size", | |
2149 | }; | |
2150 | ||
2151 | static void | |
ac88e2de | 2152 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
2153 | { |
2154 | set_memory_packet_size (args, &memory_read_packet_config); | |
2155 | } | |
2156 | ||
2157 | static void | |
ac88e2de | 2158 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
2159 | { |
2160 | show_memory_packet_size (&memory_read_packet_config); | |
2161 | } | |
2162 | ||
6b8edb51 PA |
2163 | long |
2164 | remote_target::get_memory_read_packet_size () | |
11cf8741 JM |
2165 | { |
2166 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 2167 | |
11cf8741 JM |
2168 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
2169 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
2170 | increased beyond this. */ |
2171 | if (size > get_remote_packet_size ()) | |
2172 | size = get_remote_packet_size (); | |
11cf8741 JM |
2173 | return size; |
2174 | } | |
2175 | ||
ff52c073 | 2176 | static enum packet_support packet_config_support (const packet_config *config); |
5a2468f5 | 2177 | |
4082afcc | 2178 | |
ff52c073 CS |
2179 | static void |
2180 | set_remote_protocol_packet_cmd (const char *args, int from_tty, | |
2181 | cmd_list_element *c) | |
2182 | { | |
2183 | remote_target *remote = get_current_remote_target (); | |
2184 | gdb_assert (c->var.has_value ()); | |
4082afcc | 2185 | |
ff52c073 CS |
2186 | auto *default_config = static_cast<packet_config *> (c->context ()); |
2187 | const int packet_idx = std::distance (remote_protocol_packets, | |
2188 | default_config); | |
fcef6471 | 2189 | |
ff52c073 CS |
2190 | if (packet_idx >= 0 && packet_idx < PACKET_MAX) |
2191 | { | |
2192 | const char *name = packets_descriptions[packet_idx].name; | |
2193 | const auto_boolean value = c->var->get<auto_boolean> (); | |
2194 | const char *support = get_packet_support_name (value); | |
2195 | const char *target_type = get_target_type_name (remote != nullptr); | |
5a2468f5 | 2196 | |
ff52c073 CS |
2197 | if (remote != nullptr) |
2198 | remote->m_features.m_protocol_packets[packet_idx].detect = value; | |
2199 | else | |
2200 | remote_protocol_packets[packet_idx].detect = value; | |
2201 | ||
2202 | gdb_printf (_("Support for the '%s' packet %s is set to \"%s\".\n"), name, | |
2203 | target_type, support); | |
2204 | return; | |
2205 | } | |
2206 | ||
2207 | internal_error (_("Could not find config for %s"), c->name); | |
2208 | } | |
5a2468f5 JM |
2209 | |
2210 | static void | |
ff52c073 CS |
2211 | show_packet_config_cmd (ui_file *file, const unsigned int which_packet, |
2212 | remote_target *remote) | |
5a2468f5 | 2213 | { |
a121b7c1 | 2214 | const char *support = "internal-error"; |
ff52c073 CS |
2215 | const char *target_type = get_target_type_name (remote != nullptr); |
2216 | ||
2217 | packet_config *config; | |
2218 | if (remote != nullptr) | |
2219 | config = &remote->m_features.m_protocol_packets[which_packet]; | |
2220 | else | |
2221 | config = &remote_protocol_packets[which_packet]; | |
a744cf53 | 2222 | |
4082afcc | 2223 | switch (packet_config_support (config)) |
5a2468f5 JM |
2224 | { |
2225 | case PACKET_ENABLE: | |
2226 | support = "enabled"; | |
2227 | break; | |
2228 | case PACKET_DISABLE: | |
2229 | support = "disabled"; | |
2230 | break; | |
2231 | case PACKET_SUPPORT_UNKNOWN: | |
2232 | support = "unknown"; | |
2233 | break; | |
2234 | } | |
2235 | switch (config->detect) | |
2236 | { | |
7f19b9a2 | 2237 | case AUTO_BOOLEAN_AUTO: |
6cb06a8c | 2238 | gdb_printf (file, |
ff52c073 CS |
2239 | _("Support for the '%s' packet %s is \"auto\", " |
2240 | "currently %s.\n"), | |
2241 | packets_descriptions[which_packet].name, target_type, | |
2242 | support); | |
5a2468f5 | 2243 | break; |
7f19b9a2 AC |
2244 | case AUTO_BOOLEAN_TRUE: |
2245 | case AUTO_BOOLEAN_FALSE: | |
6cb06a8c | 2246 | gdb_printf (file, |
ff52c073 CS |
2247 | _("Support for the '%s' packet %s is \"%s\".\n"), |
2248 | packets_descriptions[which_packet].name, target_type, | |
2249 | get_packet_support_name (config->detect)); | |
8e248173 | 2250 | break; |
5a2468f5 JM |
2251 | } |
2252 | } | |
2253 | ||
2254 | static void | |
ff52c073 | 2255 | add_packet_config_cmd (const unsigned int which_packet, const char *name, |
bb572ddd | 2256 | const char *title, int legacy) |
d471ea57 | 2257 | { |
ff52c073 CS |
2258 | packets_descriptions[which_packet].name = name; |
2259 | packets_descriptions[which_packet].title = title; | |
2260 | ||
2261 | packet_config *config = &remote_protocol_packets[which_packet]; | |
2262 | ||
8579fd13 AB |
2263 | gdb::unique_xmalloc_ptr<char> set_doc |
2264 | = xstrprintf ("Set use of remote protocol `%s' (%s) packet.", | |
2265 | name, title); | |
2266 | gdb::unique_xmalloc_ptr<char> show_doc | |
2267 | = xstrprintf ("Show current use of remote protocol `%s' (%s) packet.", | |
2268 | name, title); | |
d471ea57 | 2269 | /* set/show TITLE-packet {auto,on,off} */ |
8579fd13 | 2270 | gdb::unique_xmalloc_ptr<char> cmd_name = xstrprintf ("%s-packet", title); |
5e84b7ee | 2271 | set_show_commands cmds |
8579fd13 AB |
2272 | = add_setshow_auto_boolean_cmd (cmd_name.release (), class_obscure, |
2273 | &config->detect, set_doc.get (), | |
2274 | show_doc.get (), NULL, /* help_doc */ | |
ff52c073 | 2275 | set_remote_protocol_packet_cmd, |
5e84b7ee SM |
2276 | show_remote_protocol_packet_cmd, |
2277 | &remote_set_cmdlist, &remote_show_cmdlist); | |
ff52c073 CS |
2278 | cmds.show->set_context (config); |
2279 | cmds.set->set_context (config); | |
5e84b7ee | 2280 | |
23860348 | 2281 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
2282 | if (legacy) |
2283 | { | |
5f21c7aa AB |
2284 | /* It's not clear who should take ownership of the LEGACY_NAME string |
2285 | created below, so, for now, place the string into a static vector | |
2286 | which ensures the strings is released when GDB exits. */ | |
2287 | static std::vector<gdb::unique_xmalloc_ptr<char>> legacy_names; | |
2288 | gdb::unique_xmalloc_ptr<char> legacy_name | |
8579fd13 AB |
2289 | = xstrprintf ("%s-packet", name); |
2290 | add_alias_cmd (legacy_name.get (), cmds.set, class_obscure, 0, | |
bb572ddd | 2291 | &remote_set_cmdlist); |
8579fd13 | 2292 | add_alias_cmd (legacy_name.get (), cmds.show, class_obscure, 0, |
bb572ddd | 2293 | &remote_show_cmdlist); |
5f21c7aa | 2294 | legacy_names.emplace_back (std::move (legacy_name)); |
d471ea57 | 2295 | } |
5a2468f5 JM |
2296 | } |
2297 | ||
d471ea57 | 2298 | static enum packet_result |
a76d924d | 2299 | packet_check_result (const char *buf) |
5a2468f5 | 2300 | { |
d471ea57 | 2301 | if (buf[0] != '\0') |
5a2468f5 | 2302 | { |
d471ea57 | 2303 | /* The stub recognized the packet request. Check that the |
23860348 | 2304 | operation succeeded. */ |
a76d924d DJ |
2305 | if (buf[0] == 'E' |
2306 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
2307 | && buf[3] == '\0') | |
85102364 | 2308 | /* "Enn" - definitely an error. */ |
a76d924d DJ |
2309 | return PACKET_ERROR; |
2310 | ||
2311 | /* Always treat "E." as an error. This will be used for | |
2312 | more verbose error messages, such as E.memtypes. */ | |
2313 | if (buf[0] == 'E' && buf[1] == '.') | |
2314 | return PACKET_ERROR; | |
2315 | ||
2316 | /* The packet may or may not be OK. Just assume it is. */ | |
2317 | return PACKET_OK; | |
2318 | } | |
2319 | else | |
2320 | /* The stub does not support the packet. */ | |
2321 | return PACKET_UNKNOWN; | |
2322 | } | |
2323 | ||
8d64371b TT |
2324 | static enum packet_result |
2325 | packet_check_result (const gdb::char_vector &buf) | |
2326 | { | |
2327 | return packet_check_result (buf.data ()); | |
2328 | } | |
2329 | ||
ff52c073 CS |
2330 | packet_result |
2331 | remote_features::packet_ok (const char *buf, const int which_packet) | |
a76d924d | 2332 | { |
ff52c073 CS |
2333 | packet_config *config = &m_protocol_packets[which_packet]; |
2334 | packet_description *descr = &packets_descriptions[which_packet]; | |
2335 | ||
a76d924d DJ |
2336 | enum packet_result result; |
2337 | ||
4082afcc PA |
2338 | if (config->detect != AUTO_BOOLEAN_TRUE |
2339 | && config->support == PACKET_DISABLE) | |
f34652de | 2340 | internal_error (_("packet_ok: attempt to use a disabled packet")); |
4082afcc | 2341 | |
a76d924d DJ |
2342 | result = packet_check_result (buf); |
2343 | switch (result) | |
2344 | { | |
2345 | case PACKET_OK: | |
2346 | case PACKET_ERROR: | |
2347 | /* The stub recognized the packet request. */ | |
4082afcc | 2348 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 2349 | { |
2189c312 | 2350 | remote_debug_printf ("Packet %s (%s) is supported", |
ff52c073 | 2351 | descr->name, descr->title); |
d471ea57 | 2352 | config->support = PACKET_ENABLE; |
d471ea57 | 2353 | } |
a76d924d DJ |
2354 | break; |
2355 | case PACKET_UNKNOWN: | |
23860348 | 2356 | /* The stub does not support the packet. */ |
4082afcc PA |
2357 | if (config->detect == AUTO_BOOLEAN_AUTO |
2358 | && config->support == PACKET_ENABLE) | |
d471ea57 | 2359 | { |
4082afcc PA |
2360 | /* If the stub previously indicated that the packet was |
2361 | supported then there is a protocol error. */ | |
2362 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
ff52c073 | 2363 | descr->name, descr->title); |
4082afcc PA |
2364 | } |
2365 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
2366 | { | |
2367 | /* The user set it wrong. */ | |
2368 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
ff52c073 | 2369 | descr->name, descr->title); |
d471ea57 | 2370 | } |
4082afcc | 2371 | |
ff52c073 CS |
2372 | remote_debug_printf ("Packet %s (%s) is NOT supported", descr->name, |
2373 | descr->title); | |
4082afcc | 2374 | config->support = PACKET_DISABLE; |
a76d924d | 2375 | break; |
5a2468f5 | 2376 | } |
a76d924d DJ |
2377 | |
2378 | return result; | |
5a2468f5 JM |
2379 | } |
2380 | ||
ff52c073 CS |
2381 | packet_result |
2382 | remote_features::packet_ok (const gdb::char_vector &buf, const int which_packet) | |
f7e6eed5 | 2383 | { |
ff52c073 | 2384 | return packet_ok (buf.data (), which_packet); |
f7e6eed5 PA |
2385 | } |
2386 | ||
4082afcc PA |
2387 | /* Returns whether a given packet or feature is supported. This takes |
2388 | into account the state of the corresponding "set remote foo-packet" | |
2389 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2390 | |
4082afcc | 2391 | static enum packet_support |
ff52c073 | 2392 | packet_config_support (const packet_config *config) |
4082afcc PA |
2393 | { |
2394 | switch (config->detect) | |
444abaca | 2395 | { |
4082afcc PA |
2396 | case AUTO_BOOLEAN_TRUE: |
2397 | return PACKET_ENABLE; | |
2398 | case AUTO_BOOLEAN_FALSE: | |
2399 | return PACKET_DISABLE; | |
2400 | case AUTO_BOOLEAN_AUTO: | |
2401 | return config->support; | |
2402 | default: | |
557b4d76 | 2403 | gdb_assert_not_reached ("bad switch"); |
444abaca | 2404 | } |
4082afcc PA |
2405 | } |
2406 | ||
ff52c073 CS |
2407 | packet_support |
2408 | remote_features::packet_support (int packet) const | |
4082afcc | 2409 | { |
ff52c073 | 2410 | const packet_config *config = &m_protocol_packets[packet]; |
4082afcc | 2411 | return packet_config_support (config); |
dc8acb97 MS |
2412 | } |
2413 | ||
5a2468f5 | 2414 | static void |
444abaca DJ |
2415 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2416 | struct cmd_list_element *c, | |
2417 | const char *value) | |
5a2468f5 | 2418 | { |
ff52c073 | 2419 | remote_target *remote = get_current_remote_target (); |
1d7fe7f0 | 2420 | gdb_assert (c->var.has_value ()); |
5a2468f5 | 2421 | |
ff52c073 CS |
2422 | auto *default_config = static_cast<packet_config *> (c->context ()); |
2423 | const int packet_idx = std::distance (remote_protocol_packets, | |
2424 | default_config); | |
2425 | ||
2426 | if (packet_idx >= 0 && packet_idx < PACKET_MAX) | |
444abaca | 2427 | { |
ff52c073 CS |
2428 | show_packet_config_cmd (file, packet_idx, remote); |
2429 | return; | |
444abaca | 2430 | } |
ff52c073 | 2431 | internal_error (_("Could not find config for %s"), c->name); |
5a2468f5 JM |
2432 | } |
2433 | ||
d471ea57 AC |
2434 | /* Should we try one of the 'Z' requests? */ |
2435 | ||
2436 | enum Z_packet_type | |
2437 | { | |
2438 | Z_PACKET_SOFTWARE_BP, | |
2439 | Z_PACKET_HARDWARE_BP, | |
2440 | Z_PACKET_WRITE_WP, | |
2441 | Z_PACKET_READ_WP, | |
2442 | Z_PACKET_ACCESS_WP, | |
2443 | NR_Z_PACKET_TYPES | |
2444 | }; | |
96baa820 | 2445 | |
d471ea57 | 2446 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2447 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2448 | |
7f19b9a2 | 2449 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2450 | |
2451 | static void | |
eb4c3f4a | 2452 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2453 | struct cmd_list_element *c) |
96baa820 | 2454 | { |
ff52c073 | 2455 | remote_target *remote = get_current_remote_target (); |
d471ea57 | 2456 | int i; |
a744cf53 | 2457 | |
d471ea57 | 2458 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
ff52c073 CS |
2459 | { |
2460 | if (remote != nullptr) | |
2461 | remote->m_features.m_protocol_packets[PACKET_Z0 + i].detect | |
2462 | = remote_Z_packet_detect; | |
2463 | else | |
2464 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; | |
2465 | } | |
2466 | ||
2467 | const char *support = get_packet_support_name (remote_Z_packet_detect); | |
2468 | const char *target_type = get_target_type_name (remote != nullptr); | |
2469 | gdb_printf (_("Use of Z packets %s is set to \"%s\".\n"), target_type, | |
2470 | support); | |
2471 | ||
96baa820 JM |
2472 | } |
2473 | ||
2474 | static void | |
08546159 AC |
2475 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2476 | struct cmd_list_element *c, | |
2477 | const char *value) | |
96baa820 | 2478 | { |
ff52c073 | 2479 | remote_target *remote = get_current_remote_target (); |
d471ea57 | 2480 | int i; |
a744cf53 | 2481 | |
d471ea57 | 2482 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
ff52c073 | 2483 | show_packet_config_cmd (file, PACKET_Z0 + i, remote); |
2c2e7f87 LM |
2484 | } |
2485 | ||
cbb8991c DB |
2486 | /* Insert fork catchpoint target routine. If fork events are enabled |
2487 | then return success, nothing more to do. */ | |
2488 | ||
f6ac5f3d PA |
2489 | int |
2490 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c | 2491 | { |
ff52c073 | 2492 | return !m_features.remote_fork_event_p (); |
cbb8991c DB |
2493 | } |
2494 | ||
2495 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2496 | return success. */ | |
2497 | ||
f6ac5f3d PA |
2498 | int |
2499 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2500 | { |
2501 | return 0; | |
2502 | } | |
2503 | ||
2504 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2505 | then return success, nothing more to do. */ | |
2506 | ||
f6ac5f3d PA |
2507 | int |
2508 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c | 2509 | { |
ff52c073 | 2510 | return !m_features.remote_vfork_event_p (); |
cbb8991c DB |
2511 | } |
2512 | ||
2513 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2514 | return success. */ | |
2515 | ||
f6ac5f3d PA |
2516 | int |
2517 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2518 | { |
2519 | return 0; | |
2520 | } | |
2521 | ||
d46addbb DB |
2522 | /* Insert exec catchpoint target routine. If exec events are |
2523 | enabled, just return success. */ | |
2524 | ||
f6ac5f3d PA |
2525 | int |
2526 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb | 2527 | { |
ff52c073 | 2528 | return !m_features.remote_exec_event_p (); |
d46addbb DB |
2529 | } |
2530 | ||
2531 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2532 | return success. */ | |
2533 | ||
f6ac5f3d PA |
2534 | int |
2535 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2536 | { |
2537 | return 0; | |
2538 | } | |
2539 | ||
c906108c SS |
2540 | \f |
2541 | ||
ffdd69cf TT |
2542 | /* Take advantage of the fact that the TID field is not used, to tag |
2543 | special ptids with it set to != 0. */ | |
2544 | static const ptid_t magic_null_ptid (42000, -1, 1); | |
2545 | static const ptid_t not_sent_ptid (42000, -2, 1); | |
2546 | static const ptid_t any_thread_ptid (42000, 0, 1); | |
79d7f229 | 2547 | |
0b16c5cf PA |
2548 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2549 | detach instead of killing it when bailing out). */ | |
2550 | ||
6b8edb51 PA |
2551 | int |
2552 | remote_target::remote_query_attached (int pid) | |
0b16c5cf PA |
2553 | { |
2554 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2555 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2556 | |
ff52c073 | 2557 | if (m_features.packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2558 | return 0; |
2559 | ||
ff52c073 | 2560 | if (m_features.remote_multi_process_p ()) |
8d64371b | 2561 | xsnprintf (rs->buf.data (), size, "qAttached:%x", pid); |
0b16c5cf | 2562 | else |
8d64371b | 2563 | xsnprintf (rs->buf.data (), size, "qAttached"); |
0b16c5cf PA |
2564 | |
2565 | putpkt (rs->buf); | |
8d64371b | 2566 | getpkt (&rs->buf, 0); |
0b16c5cf | 2567 | |
ff52c073 | 2568 | switch (m_features.packet_ok (rs->buf, PACKET_qAttached)) |
0b16c5cf PA |
2569 | { |
2570 | case PACKET_OK: | |
8d64371b | 2571 | if (strcmp (rs->buf.data (), "1") == 0) |
0b16c5cf PA |
2572 | return 1; |
2573 | break; | |
2574 | case PACKET_ERROR: | |
8d64371b | 2575 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
0b16c5cf PA |
2576 | break; |
2577 | case PACKET_UNKNOWN: | |
2578 | break; | |
2579 | } | |
2580 | ||
2581 | return 0; | |
2582 | } | |
2583 | ||
49c62f2e PA |
2584 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2585 | has been invented by GDB, instead of reported by the target. Since | |
2586 | we can be connected to a remote system before before knowing about | |
2587 | any inferior, mark the target with execution when we find the first | |
2588 | inferior. If ATTACHED is 1, then we had just attached to this | |
2589 | inferior. If it is 0, then we just created this inferior. If it | |
2590 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2591 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2592 | attempt to open this inferior's executable as the main executable | |
2593 | if no main executable is open already. */ | |
1941c569 | 2594 | |
6b8edb51 | 2595 | inferior * |
9ab8741a | 2596 | remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 | 2597 | int try_open_exec) |
1941c569 | 2598 | { |
1941c569 PA |
2599 | struct inferior *inf; |
2600 | ||
0b16c5cf PA |
2601 | /* Check whether this process we're learning about is to be |
2602 | considered attached, or if is to be considered to have been | |
2603 | spawned by the stub. */ | |
2604 | if (attached == -1) | |
2605 | attached = remote_query_attached (pid); | |
2606 | ||
f5656ead | 2607 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2608 | { |
2609 | /* If the target shares code across all inferiors, then every | |
2610 | attach adds a new inferior. */ | |
2611 | inf = add_inferior (pid); | |
2612 | ||
2613 | /* ... and every inferior is bound to the same program space. | |
2614 | However, each inferior may still have its own address | |
2615 | space. */ | |
2616 | inf->aspace = maybe_new_address_space (); | |
2617 | inf->pspace = current_program_space; | |
2618 | } | |
2619 | else | |
2620 | { | |
2621 | /* In the traditional debugging scenario, there's a 1-1 match | |
2622 | between program/address spaces. We simply bind the inferior | |
2623 | to the program space's address space. */ | |
2624 | inf = current_inferior (); | |
78f2c40a PA |
2625 | |
2626 | /* However, if the current inferior is already bound to a | |
2627 | process, find some other empty inferior. */ | |
2628 | if (inf->pid != 0) | |
2629 | { | |
2630 | inf = nullptr; | |
2631 | for (inferior *it : all_inferiors ()) | |
2632 | if (it->pid == 0) | |
2633 | { | |
2634 | inf = it; | |
2635 | break; | |
2636 | } | |
2637 | } | |
2638 | if (inf == nullptr) | |
2639 | { | |
2640 | /* Since all inferiors were already bound to a process, add | |
2641 | a new inferior. */ | |
2642 | inf = add_inferior_with_spaces (); | |
2643 | } | |
2644 | switch_to_inferior_no_thread (inf); | |
02980c56 | 2645 | inf->push_target (this); |
6c95b8df PA |
2646 | inferior_appeared (inf, pid); |
2647 | } | |
1941c569 | 2648 | |
0b16c5cf | 2649 | inf->attach_flag = attached; |
49c62f2e | 2650 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2651 | |
1b6e6f5c GB |
2652 | /* If no main executable is currently open then attempt to |
2653 | open the file that was executed to create this inferior. */ | |
835205d0 | 2654 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2655 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2656 | |
a2fedca9 PW |
2657 | /* Check for exec file mismatch, and let the user solve it. */ |
2658 | validate_exec_file (1); | |
2659 | ||
1941c569 PA |
2660 | return inf; |
2661 | } | |
2662 | ||
7aabaf9d | 2663 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
5b6d1e4f PA |
2664 | static remote_thread_info *get_remote_thread_info (remote_target *target, |
2665 | ptid_t ptid); | |
85ad3aaf | 2666 | |
1941c569 | 2667 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
b622494e AB |
2668 | according to EXECUTING and RUNNING respectively. If SILENT_P (or the |
2669 | remote_state::starting_up flag) is true then the new thread is added | |
2670 | silently, otherwise the new thread will be announced to the user. */ | |
1941c569 | 2671 | |
00431a78 | 2672 | thread_info * |
b622494e AB |
2673 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing, |
2674 | bool silent_p) | |
c906108c | 2675 | { |
b7ea362b | 2676 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2677 | struct thread_info *thread; |
b7ea362b PA |
2678 | |
2679 | /* GDB historically didn't pull threads in the initial connection | |
2680 | setup. If the remote target doesn't even have a concept of | |
2681 | threads (e.g., a bare-metal target), even if internally we | |
2682 | consider that a single-threaded target, mentioning a new thread | |
2683 | might be confusing to the user. Be silent then, preserving the | |
2684 | age old behavior. */ | |
b622494e | 2685 | if (rs->starting_up || silent_p) |
5b6d1e4f | 2686 | thread = add_thread_silent (this, ptid); |
b7ea362b | 2687 | else |
5b6d1e4f | 2688 | thread = add_thread (this, ptid); |
1941c569 | 2689 | |
c9d22089 SM |
2690 | /* We start by assuming threads are resumed. That state then gets updated |
2691 | when we process a matching stop reply. */ | |
2692 | get_remote_thread_info (thread)->set_resumed (); | |
2693 | ||
5b6d1e4f PA |
2694 | set_executing (this, ptid, executing); |
2695 | set_running (this, ptid, running); | |
00431a78 PA |
2696 | |
2697 | return thread; | |
1941c569 PA |
2698 | } |
2699 | ||
2700 | /* Come here when we learn about a thread id from the remote target. | |
2701 | It may be the first time we hear about such thread, so take the | |
2702 | opportunity to add it to GDB's thread list. In case this is the | |
2703 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2704 | GDB's inferior list as well. EXECUTING indicates whether the |
2705 | thread is (internally) executing or stopped. */ | |
1941c569 | 2706 | |
6b8edb51 | 2707 | void |
8a82de58 | 2708 | remote_target::remote_notice_new_inferior (ptid_t currthread, bool executing) |
1941c569 | 2709 | { |
0d5b594f PA |
2710 | /* In non-stop mode, we assume new found threads are (externally) |
2711 | running until proven otherwise with a stop reply. In all-stop, | |
2712 | we can only get here if all threads are stopped. */ | |
8a82de58 | 2713 | bool running = target_is_non_stop_p (); |
0d5b594f | 2714 | |
c906108c SS |
2715 | /* If this is a new thread, add it to GDB's thread list. |
2716 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 | 2717 | |
5b6d1e4f | 2718 | thread_info *tp = find_thread_ptid (this, currthread); |
00431a78 | 2719 | if (tp != NULL && tp->state == THREAD_EXITED) |
82f73884 PA |
2720 | { |
2721 | /* We're seeing an event on a thread id we knew had exited. | |
2722 | This has to be a new thread reusing the old id. Add it. */ | |
b622494e | 2723 | remote_add_thread (currthread, running, executing, false); |
82f73884 PA |
2724 | return; |
2725 | } | |
2726 | ||
5b6d1e4f | 2727 | if (!in_thread_list (this, currthread)) |
c0a2216e | 2728 | { |
1941c569 | 2729 | struct inferior *inf = NULL; |
e99b03dc | 2730 | int pid = currthread.pid (); |
1941c569 | 2731 | |
0e998d96 | 2732 | if (inferior_ptid.is_pid () |
e99b03dc | 2733 | && pid == inferior_ptid.pid ()) |
c0a2216e PA |
2734 | { |
2735 | /* inferior_ptid has no thread member yet. This can happen | |
2736 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2737 | stub doesn't support qC. This is the first stop reported | |
2738 | after an attach, so this is the main thread. Update the | |
2739 | ptid in the thread list. */ | |
5b6d1e4f PA |
2740 | if (in_thread_list (this, ptid_t (pid))) |
2741 | thread_change_ptid (this, inferior_ptid, currthread); | |
bad34192 PA |
2742 | else |
2743 | { | |
0ac55310 | 2744 | thread_info *thr |
b622494e | 2745 | = remote_add_thread (currthread, running, executing, false); |
0ac55310 | 2746 | switch_to_thread (thr); |
bad34192 | 2747 | } |
dc146f7c | 2748 | return; |
c0a2216e | 2749 | } |
82f73884 | 2750 | |
d7e15655 | 2751 | if (magic_null_ptid == inferior_ptid) |
c0a2216e PA |
2752 | { |
2753 | /* inferior_ptid is not set yet. This can happen with the | |
2754 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2755 | doesn't support qC. This is the first stop reported | |
2756 | after an attach, so this is the main thread. Update the | |
2757 | ptid in the thread list. */ | |
5b6d1e4f | 2758 | thread_change_ptid (this, inferior_ptid, currthread); |
82f73884 | 2759 | return; |
c0a2216e | 2760 | } |
82f73884 | 2761 | |
29c87f7f PA |
2762 | /* When connecting to a target remote, or to a target |
2763 | extended-remote which already was debugging an inferior, we | |
2764 | may not know about it yet. Add it before adding its child | |
2765 | thread, so notifications are emitted in a sensible order. */ | |
5b6d1e4f | 2766 | if (find_inferior_pid (this, currthread.pid ()) == NULL) |
49c62f2e | 2767 | { |
ff52c073 | 2768 | bool fake_pid_p = !m_features.remote_multi_process_p (); |
49c62f2e PA |
2769 | |
2770 | inf = remote_add_inferior (fake_pid_p, | |
e99b03dc | 2771 | currthread.pid (), -1, 1); |
49c62f2e | 2772 | } |
29c87f7f | 2773 | |
82f73884 | 2774 | /* This is really a new thread. Add it. */ |
00431a78 | 2775 | thread_info *new_thr |
b622494e | 2776 | = remote_add_thread (currthread, running, executing, false); |
1941c569 PA |
2777 | |
2778 | /* If we found a new inferior, let the common code do whatever | |
2779 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2780 | breakpoints), unless we're just setting up an all-stop |
2781 | connection. */ | |
1941c569 | 2782 | if (inf != NULL) |
b7ea362b PA |
2783 | { |
2784 | struct remote_state *rs = get_remote_state (); | |
2785 | ||
6efcd9a8 | 2786 | if (!rs->starting_up) |
00431a78 | 2787 | notice_new_inferior (new_thr, executing, 0); |
b7ea362b | 2788 | } |
c0a2216e | 2789 | } |
c906108c SS |
2790 | } |
2791 | ||
85ad3aaf | 2792 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2793 | |
7aabaf9d SM |
2794 | static remote_thread_info * |
2795 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2796 | { |
85ad3aaf | 2797 | gdb_assert (thread != NULL); |
dc146f7c | 2798 | |
85ad3aaf | 2799 | if (thread->priv == NULL) |
7aabaf9d | 2800 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2801 | |
98ed24fb | 2802 | return gdb::checked_static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2803 | } |
2804 | ||
5b6d1e4f PA |
2805 | /* Return PTID's private thread data, creating it if necessary. */ |
2806 | ||
7aabaf9d | 2807 | static remote_thread_info * |
5b6d1e4f | 2808 | get_remote_thread_info (remote_target *target, ptid_t ptid) |
85ad3aaf | 2809 | { |
5b6d1e4f | 2810 | thread_info *thr = find_thread_ptid (target, ptid); |
00431a78 | 2811 | return get_remote_thread_info (thr); |
dc146f7c VP |
2812 | } |
2813 | ||
74531fed PA |
2814 | /* Call this function as a result of |
2815 | 1) A halt indication (T packet) containing a thread id | |
2816 | 2) A direct query of currthread | |
0df8b418 | 2817 | 3) Successful execution of set thread */ |
74531fed PA |
2818 | |
2819 | static void | |
47f8a51d | 2820 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2821 | { |
47f8a51d | 2822 | rs->general_thread = currthread; |
74531fed PA |
2823 | } |
2824 | ||
89be2091 DJ |
2825 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2826 | it can simply pass through to the inferior without reporting. */ | |
2827 | ||
f6ac5f3d | 2828 | void |
adc6a863 | 2829 | remote_target::pass_signals (gdb::array_view<const unsigned char> pass_signals) |
89be2091 | 2830 | { |
ff52c073 | 2831 | if (m_features.packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2832 | { |
2833 | char *pass_packet, *p; | |
adc6a863 | 2834 | int count = 0; |
747dc59d | 2835 | struct remote_state *rs = get_remote_state (); |
89be2091 | 2836 | |
adc6a863 PA |
2837 | gdb_assert (pass_signals.size () < 256); |
2838 | for (size_t i = 0; i < pass_signals.size (); i++) | |
89be2091 | 2839 | { |
2455069d | 2840 | if (pass_signals[i]) |
89be2091 DJ |
2841 | count++; |
2842 | } | |
224c3ddb | 2843 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2844 | strcpy (pass_packet, "QPassSignals:"); |
2845 | p = pass_packet + strlen (pass_packet); | |
adc6a863 | 2846 | for (size_t i = 0; i < pass_signals.size (); i++) |
89be2091 | 2847 | { |
2455069d | 2848 | if (pass_signals[i]) |
89be2091 DJ |
2849 | { |
2850 | if (i >= 16) | |
2851 | *p++ = tohex (i >> 4); | |
2852 | *p++ = tohex (i & 15); | |
2853 | if (count) | |
2854 | *p++ = ';'; | |
2855 | else | |
2856 | break; | |
2857 | count--; | |
2858 | } | |
2859 | } | |
2860 | *p = 0; | |
747dc59d | 2861 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2862 | { |
89be2091 | 2863 | putpkt (pass_packet); |
8d64371b | 2864 | getpkt (&rs->buf, 0); |
ff52c073 | 2865 | m_features.packet_ok (rs->buf, PACKET_QPassSignals); |
84d53fa9 | 2866 | xfree (rs->last_pass_packet); |
747dc59d | 2867 | rs->last_pass_packet = pass_packet; |
89be2091 DJ |
2868 | } |
2869 | else | |
2870 | xfree (pass_packet); | |
2871 | } | |
2872 | } | |
2873 | ||
82075af2 JS |
2874 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2875 | to report syscalls to GDB. */ | |
2876 | ||
f6ac5f3d PA |
2877 | int |
2878 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2879 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2880 | { |
b80406ac | 2881 | const char *catch_packet; |
82075af2 JS |
2882 | enum packet_result result; |
2883 | int n_sysno = 0; | |
2884 | ||
ff52c073 | 2885 | if (m_features.packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) |
82075af2 JS |
2886 | { |
2887 | /* Not supported. */ | |
2888 | return 1; | |
2889 | } | |
2890 | ||
649a140c | 2891 | if (needed && any_count == 0) |
82075af2 | 2892 | { |
649a140c PA |
2893 | /* Count how many syscalls are to be caught. */ |
2894 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2895 | { |
649a140c | 2896 | if (syscall_counts[i] != 0) |
82075af2 JS |
2897 | n_sysno++; |
2898 | } | |
2899 | } | |
2900 | ||
2189c312 SM |
2901 | remote_debug_printf ("pid %d needed %d any_count %d n_sysno %d", |
2902 | pid, needed, any_count, n_sysno); | |
82075af2 | 2903 | |
1b81856f | 2904 | std::string built_packet; |
82075af2 JS |
2905 | if (needed) |
2906 | { | |
2907 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2908 | characters for a sysno. If the resulting packet size is too | |
2909 | big, fallback on the non-selective packet. */ | |
2910 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2911 | built_packet.reserve (maxpktsz); |
2912 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2913 | if (any_count == 0) |
82075af2 | 2914 | { |
649a140c PA |
2915 | /* Add in each syscall to be caught. */ |
2916 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2917 | { |
649a140c PA |
2918 | if (syscall_counts[i] != 0) |
2919 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2920 | } |
2921 | } | |
1b81856f | 2922 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2923 | { |
2924 | /* catch_packet too big. Fallback to less efficient | |
2925 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2926 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2927 | } |
b80406ac | 2928 | else |
1b81856f | 2929 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2930 | } |
2931 | else | |
b80406ac | 2932 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2933 | |
b80406ac | 2934 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2935 | |
b80406ac | 2936 | putpkt (catch_packet); |
8d64371b | 2937 | getpkt (&rs->buf, 0); |
ff52c073 | 2938 | result = m_features.packet_ok (rs->buf, PACKET_QCatchSyscalls); |
b80406ac TT |
2939 | if (result == PACKET_OK) |
2940 | return 0; | |
2941 | else | |
2942 | return -1; | |
82075af2 JS |
2943 | } |
2944 | ||
9b224c5e PA |
2945 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2946 | signals it should pass through to the inferior when detaching. */ | |
2947 | ||
f6ac5f3d | 2948 | void |
adc6a863 | 2949 | remote_target::program_signals (gdb::array_view<const unsigned char> signals) |
9b224c5e | 2950 | { |
ff52c073 | 2951 | if (m_features.packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2952 | { |
2953 | char *packet, *p; | |
adc6a863 | 2954 | int count = 0; |
5e4a05c4 | 2955 | struct remote_state *rs = get_remote_state (); |
9b224c5e | 2956 | |
adc6a863 PA |
2957 | gdb_assert (signals.size () < 256); |
2958 | for (size_t i = 0; i < signals.size (); i++) | |
9b224c5e PA |
2959 | { |
2960 | if (signals[i]) | |
2961 | count++; | |
2962 | } | |
224c3ddb | 2963 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2964 | strcpy (packet, "QProgramSignals:"); |
2965 | p = packet + strlen (packet); | |
adc6a863 | 2966 | for (size_t i = 0; i < signals.size (); i++) |
9b224c5e PA |
2967 | { |
2968 | if (signal_pass_state (i)) | |
2969 | { | |
2970 | if (i >= 16) | |
2971 | *p++ = tohex (i >> 4); | |
2972 | *p++ = tohex (i & 15); | |
2973 | if (count) | |
2974 | *p++ = ';'; | |
2975 | else | |
2976 | break; | |
2977 | count--; | |
2978 | } | |
2979 | } | |
2980 | *p = 0; | |
5e4a05c4 TT |
2981 | if (!rs->last_program_signals_packet |
2982 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2983 | { |
9b224c5e | 2984 | putpkt (packet); |
8d64371b | 2985 | getpkt (&rs->buf, 0); |
ff52c073 | 2986 | m_features.packet_ok (rs->buf, PACKET_QProgramSignals); |
5e4a05c4 TT |
2987 | xfree (rs->last_program_signals_packet); |
2988 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2989 | } |
2990 | else | |
2991 | xfree (packet); | |
2992 | } | |
2993 | } | |
2994 | ||
79d7f229 PA |
2995 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2996 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2997 | thread. If GEN is set, set the general thread, if not, then set | |
2998 | the step/continue thread. */ | |
6b8edb51 PA |
2999 | void |
3000 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 3001 | { |
d01949b6 | 3002 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 3003 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
8d64371b TT |
3004 | char *buf = rs->buf.data (); |
3005 | char *endbuf = buf + get_remote_packet_size (); | |
c906108c | 3006 | |
d7e15655 | 3007 | if (state == ptid) |
c906108c SS |
3008 | return; |
3009 | ||
79d7f229 PA |
3010 | *buf++ = 'H'; |
3011 | *buf++ = gen ? 'g' : 'c'; | |
d7e15655 | 3012 | if (ptid == magic_null_ptid) |
79d7f229 | 3013 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 3014 | else if (ptid == any_thread_ptid) |
79d7f229 | 3015 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 3016 | else if (ptid == minus_one_ptid) |
79d7f229 PA |
3017 | xsnprintf (buf, endbuf - buf, "-1"); |
3018 | else | |
82f73884 | 3019 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 3020 | putpkt (rs->buf); |
8d64371b | 3021 | getpkt (&rs->buf, 0); |
c906108c | 3022 | if (gen) |
47f8a51d | 3023 | rs->general_thread = ptid; |
c906108c | 3024 | else |
47f8a51d | 3025 | rs->continue_thread = ptid; |
c906108c | 3026 | } |
79d7f229 | 3027 | |
6b8edb51 PA |
3028 | void |
3029 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
3030 | { |
3031 | set_thread (ptid, 1); | |
3032 | } | |
3033 | ||
6b8edb51 PA |
3034 | void |
3035 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
3036 | { |
3037 | set_thread (ptid, 0); | |
3038 | } | |
3039 | ||
3c9c4b83 PA |
3040 | /* Change the remote current process. Which thread within the process |
3041 | ends up selected isn't important, as long as it is the same process | |
3042 | as what INFERIOR_PTID points to. | |
3043 | ||
3044 | This comes from that fact that there is no explicit notion of | |
3045 | "selected process" in the protocol. The selected process for | |
3046 | general operations is the process the selected general thread | |
3047 | belongs to. */ | |
3048 | ||
6b8edb51 PA |
3049 | void |
3050 | remote_target::set_general_process () | |
3c9c4b83 | 3051 | { |
3c9c4b83 | 3052 | /* If the remote can't handle multiple processes, don't bother. */ |
ff52c073 | 3053 | if (!m_features.remote_multi_process_p ()) |
3c9c4b83 PA |
3054 | return; |
3055 | ||
ff52c073 CS |
3056 | remote_state *rs = get_remote_state (); |
3057 | ||
3c9c4b83 PA |
3058 | /* We only need to change the remote current thread if it's pointing |
3059 | at some other process. */ | |
e99b03dc | 3060 | if (rs->general_thread.pid () != inferior_ptid.pid ()) |
3c9c4b83 PA |
3061 | set_general_thread (inferior_ptid); |
3062 | } | |
3063 | ||
c906108c | 3064 | \f |
7d1a114c PA |
3065 | /* Return nonzero if this is the main thread that we made up ourselves |
3066 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
3067 | |
3068 | static int | |
f6ac5f3d | 3069 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 3070 | { |
d7e15655 | 3071 | if (ptid == magic_null_ptid) |
c0a2216e PA |
3072 | /* The main thread is always alive. */ |
3073 | return 1; | |
3074 | ||
e38504b3 | 3075 | if (ptid.pid () != 0 && ptid.lwp () == 0) |
c0a2216e PA |
3076 | /* The main thread is always alive. This can happen after a |
3077 | vAttach, if the remote side doesn't support | |
3078 | multi-threading. */ | |
3079 | return 1; | |
3080 | ||
7d1a114c PA |
3081 | return 0; |
3082 | } | |
3083 | ||
3084 | /* Return nonzero if the thread PTID is still alive on the remote | |
3085 | system. */ | |
3086 | ||
57810aa7 | 3087 | bool |
f6ac5f3d | 3088 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
3089 | { |
3090 | struct remote_state *rs = get_remote_state (); | |
3091 | char *p, *endp; | |
3092 | ||
3093 | /* Check if this is a thread that we made up ourselves to model | |
3094 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 3095 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
3096 | return 1; |
3097 | ||
8d64371b TT |
3098 | p = rs->buf.data (); |
3099 | endp = p + get_remote_packet_size (); | |
82f73884 PA |
3100 | |
3101 | *p++ = 'T'; | |
3102 | write_ptid (p, endp, ptid); | |
3103 | ||
2e9f7625 | 3104 | putpkt (rs->buf); |
8d64371b | 3105 | getpkt (&rs->buf, 0); |
2e9f7625 | 3106 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
3107 | } |
3108 | ||
79efa585 SM |
3109 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
3110 | The thread_info object owns the memory for the name. */ | |
3111 | ||
f6ac5f3d PA |
3112 | const char * |
3113 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
3114 | { |
3115 | if (info->priv != NULL) | |
a9334058 SM |
3116 | { |
3117 | const std::string &name = get_remote_thread_info (info)->name; | |
3118 | return !name.empty () ? name.c_str () : NULL; | |
3119 | } | |
79efa585 SM |
3120 | |
3121 | return NULL; | |
3122 | } | |
3123 | ||
c906108c SS |
3124 | /* About these extended threadlist and threadinfo packets. They are |
3125 | variable length packets but, the fields within them are often fixed | |
30baf67b | 3126 | length. They are redundant enough to send over UDP as is the |
c906108c SS |
3127 | remote protocol in general. There is a matching unit test module |
3128 | in libstub. */ | |
3129 | ||
23860348 | 3130 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 3131 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 3132 | changable. */ |
cce74817 JM |
3133 | |
3134 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 3135 | Plan to fix this. */ |
cce74817 | 3136 | |
23860348 | 3137 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 3138 | |
9d1f7ab2 | 3139 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 3140 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
3141 | |
3142 | struct gdb_ext_thread_info | |
c5aa993b | 3143 | { |
23860348 | 3144 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 3145 | int active; /* Has state interesting to GDB? |
23860348 | 3146 | regs, stack. */ |
2bc416ba | 3147 | char display[256]; /* Brief state display, name, |
cedea757 | 3148 | blocked/suspended. */ |
23860348 | 3149 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 3150 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 3151 | whatever. */ |
c5aa993b | 3152 | }; |
cce74817 JM |
3153 | |
3154 | /* The volume of remote transfers can be limited by submitting | |
3155 | a mask containing bits specifying the desired information. | |
3156 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 3157 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
3158 | |
3159 | #define TAG_THREADID 1 | |
3160 | #define TAG_EXISTS 2 | |
3161 | #define TAG_DISPLAY 4 | |
3162 | #define TAG_THREADNAME 8 | |
c5aa993b | 3163 | #define TAG_MOREDISPLAY 16 |
cce74817 | 3164 | |
23860348 | 3165 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 3166 | |
cecb1912 | 3167 | static const char *unpack_nibble (const char *buf, int *val); |
cce74817 | 3168 | |
cecb1912 | 3169 | static const char *unpack_byte (const char *buf, int *value); |
cce74817 | 3170 | |
a14ed312 | 3171 | static char *pack_int (char *buf, int value); |
cce74817 | 3172 | |
cecb1912 | 3173 | static const char *unpack_int (const char *buf, int *value); |
cce74817 | 3174 | |
cecb1912 | 3175 | static const char *unpack_string (const char *src, char *dest, int length); |
cce74817 | 3176 | |
23860348 | 3177 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 3178 | |
cecb1912 | 3179 | static const char *unpack_threadid (const char *inbuf, threadref *id); |
cce74817 | 3180 | |
23860348 | 3181 | void int_to_threadref (threadref *id, int value); |
cce74817 | 3182 | |
23860348 | 3183 | static int threadref_to_int (threadref *ref); |
cce74817 | 3184 | |
23860348 | 3185 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 3186 | |
23860348 | 3187 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 3188 | |
2bc416ba | 3189 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 3190 | threadref *id); |
cce74817 | 3191 | |
a14ed312 KB |
3192 | static char *pack_threadlist_request (char *pkt, int startflag, |
3193 | int threadcount, | |
23860348 | 3194 | threadref *nextthread); |
cce74817 | 3195 | |
23860348 | 3196 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 3197 | |
82f73884 PA |
3198 | |
3199 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
3200 | buffer we're allowed to write to. Returns | |
3201 | BUF+CHARACTERS_WRITTEN. */ | |
3202 | ||
6b8edb51 PA |
3203 | char * |
3204 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
3205 | { |
3206 | int pid, tid; | |
82f73884 | 3207 | |
ff52c073 | 3208 | if (m_features.remote_multi_process_p ()) |
82f73884 | 3209 | { |
e99b03dc | 3210 | pid = ptid.pid (); |
82f73884 PA |
3211 | if (pid < 0) |
3212 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
3213 | else | |
3214 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
3215 | } | |
e38504b3 | 3216 | tid = ptid.lwp (); |
82f73884 PA |
3217 | if (tid < 0) |
3218 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
3219 | else | |
3220 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
3221 | ||
3222 | return buf; | |
3223 | } | |
3224 | ||
256642e8 PA |
3225 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
3226 | last parsed char. Returns null_ptid if no thread id is found, and | |
3227 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
3228 | |
3229 | static ptid_t | |
256642e8 | 3230 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 3231 | { |
256642e8 PA |
3232 | const char *p = buf; |
3233 | const char *pp; | |
82f73884 | 3234 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
3235 | |
3236 | if (*p == 'p') | |
3237 | { | |
3238 | /* Multi-process ptid. */ | |
3239 | pp = unpack_varlen_hex (p + 1, &pid); | |
3240 | if (*pp != '.') | |
b37520b6 | 3241 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
3242 | |
3243 | p = pp; | |
3244 | pp = unpack_varlen_hex (p + 1, &tid); | |
3245 | if (obuf) | |
3246 | *obuf = pp; | |
184ea2f7 | 3247 | return ptid_t (pid, tid); |
82f73884 PA |
3248 | } |
3249 | ||
3250 | /* No multi-process. Just a tid. */ | |
3251 | pp = unpack_varlen_hex (p, &tid); | |
3252 | ||
c9f35b34 KB |
3253 | /* Return null_ptid when no thread id is found. */ |
3254 | if (p == pp) | |
3255 | { | |
3256 | if (obuf) | |
3257 | *obuf = pp; | |
3258 | return null_ptid; | |
3259 | } | |
3260 | ||
2f761de2 TBA |
3261 | /* Since the stub is not sending a process id, default to what's |
3262 | current_inferior, unless it doesn't have a PID yet. If so, | |
ca19bf23 PA |
3263 | then since there's no way to know the pid of the reported |
3264 | threads, use the magic number. */ | |
2f761de2 TBA |
3265 | inferior *inf = current_inferior (); |
3266 | if (inf->pid == 0) | |
e99b03dc | 3267 | pid = magic_null_ptid.pid (); |
ca19bf23 | 3268 | else |
2f761de2 | 3269 | pid = inf->pid; |
82f73884 PA |
3270 | |
3271 | if (obuf) | |
3272 | *obuf = pp; | |
184ea2f7 | 3273 | return ptid_t (pid, tid); |
82f73884 PA |
3274 | } |
3275 | ||
c906108c | 3276 | static int |
fba45db2 | 3277 | stubhex (int ch) |
c906108c SS |
3278 | { |
3279 | if (ch >= 'a' && ch <= 'f') | |
3280 | return ch - 'a' + 10; | |
3281 | if (ch >= '0' && ch <= '9') | |
3282 | return ch - '0'; | |
3283 | if (ch >= 'A' && ch <= 'F') | |
3284 | return ch - 'A' + 10; | |
3285 | return -1; | |
3286 | } | |
3287 | ||
3288 | static int | |
cecb1912 | 3289 | stub_unpack_int (const char *buff, int fieldlength) |
c906108c SS |
3290 | { |
3291 | int nibble; | |
3292 | int retval = 0; | |
3293 | ||
3294 | while (fieldlength) | |
3295 | { | |
3296 | nibble = stubhex (*buff++); | |
3297 | retval |= nibble; | |
3298 | fieldlength--; | |
3299 | if (fieldlength) | |
3300 | retval = retval << 4; | |
3301 | } | |
3302 | return retval; | |
3303 | } | |
3304 | ||
cecb1912 SM |
3305 | static const char * |
3306 | unpack_nibble (const char *buf, int *val) | |
c906108c | 3307 | { |
b7589f7d | 3308 | *val = fromhex (*buf++); |
c906108c SS |
3309 | return buf; |
3310 | } | |
3311 | ||
cecb1912 SM |
3312 | static const char * |
3313 | unpack_byte (const char *buf, int *value) | |
c906108c SS |
3314 | { |
3315 | *value = stub_unpack_int (buf, 2); | |
3316 | return buf + 2; | |
3317 | } | |
3318 | ||
3319 | static char * | |
fba45db2 | 3320 | pack_int (char *buf, int value) |
c906108c SS |
3321 | { |
3322 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3323 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3324 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3325 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3326 | return buf; | |
3327 | } | |
3328 | ||
cecb1912 SM |
3329 | static const char * |
3330 | unpack_int (const char *buf, int *value) | |
c906108c SS |
3331 | { |
3332 | *value = stub_unpack_int (buf, 8); | |
3333 | return buf + 8; | |
3334 | } | |
3335 | ||
23860348 | 3336 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3337 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3338 | |
3339 | static char * | |
fba45db2 | 3340 | pack_string (char *pkt, char *string) |
c906108c SS |
3341 | { |
3342 | char ch; | |
3343 | int len; | |
3344 | ||
3345 | len = strlen (string); | |
3346 | if (len > 200) | |
23860348 | 3347 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3348 | pkt = pack_hex_byte (pkt, len); |
3349 | while (len-- > 0) | |
3350 | { | |
3351 | ch = *string++; | |
3352 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3353 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3354 | *pkt++ = ch; |
3355 | } | |
3356 | return pkt; | |
3357 | } | |
3358 | #endif /* 0 (unused) */ | |
3359 | ||
cecb1912 SM |
3360 | static const char * |
3361 | unpack_string (const char *src, char *dest, int length) | |
c906108c SS |
3362 | { |
3363 | while (length--) | |
3364 | *dest++ = *src++; | |
3365 | *dest = '\0'; | |
3366 | return src; | |
3367 | } | |
3368 | ||
3369 | static char * | |
fba45db2 | 3370 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3371 | { |
3372 | char *limit; | |
3373 | unsigned char *altid; | |
3374 | ||
3375 | altid = (unsigned char *) id; | |
3376 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3377 | while (pkt < limit) | |
3378 | pkt = pack_hex_byte (pkt, *altid++); | |
3379 | return pkt; | |
3380 | } | |
3381 | ||
3382 | ||
cecb1912 SM |
3383 | static const char * |
3384 | unpack_threadid (const char *inbuf, threadref *id) | |
c906108c SS |
3385 | { |
3386 | char *altref; | |
cecb1912 | 3387 | const char *limit = inbuf + BUF_THREAD_ID_SIZE; |
c906108c SS |
3388 | int x, y; |
3389 | ||
3390 | altref = (char *) id; | |
3391 | ||
3392 | while (inbuf < limit) | |
3393 | { | |
3394 | x = stubhex (*inbuf++); | |
3395 | y = stubhex (*inbuf++); | |
3396 | *altref++ = (x << 4) | y; | |
3397 | } | |
3398 | return inbuf; | |
3399 | } | |
3400 | ||
3401 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3402 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3403 | to use 64bit thread references internally. This is an adapter |
3404 | function. */ | |
3405 | ||
3406 | void | |
fba45db2 | 3407 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3408 | { |
3409 | unsigned char *scan; | |
3410 | ||
3411 | scan = (unsigned char *) id; | |
3412 | { | |
3413 | int i = 4; | |
3414 | while (i--) | |
3415 | *scan++ = 0; | |
3416 | } | |
3417 | *scan++ = (value >> 24) & 0xff; | |
3418 | *scan++ = (value >> 16) & 0xff; | |
3419 | *scan++ = (value >> 8) & 0xff; | |
3420 | *scan++ = (value & 0xff); | |
3421 | } | |
3422 | ||
3423 | static int | |
fba45db2 | 3424 | threadref_to_int (threadref *ref) |
c906108c SS |
3425 | { |
3426 | int i, value = 0; | |
3427 | unsigned char *scan; | |
3428 | ||
cfd77fa1 | 3429 | scan = *ref; |
c906108c SS |
3430 | scan += 4; |
3431 | i = 4; | |
3432 | while (i-- > 0) | |
3433 | value = (value << 8) | ((*scan++) & 0xff); | |
3434 | return value; | |
3435 | } | |
3436 | ||
3437 | static void | |
fba45db2 | 3438 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3439 | { |
3440 | int i; | |
3441 | unsigned char *csrc, *cdest; | |
3442 | ||
3443 | csrc = (unsigned char *) src; | |
3444 | cdest = (unsigned char *) dest; | |
3445 | i = 8; | |
3446 | while (i--) | |
3447 | *cdest++ = *csrc++; | |
3448 | } | |
3449 | ||
3450 | static int | |
fba45db2 | 3451 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3452 | { |
23860348 | 3453 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3454 | #if 0 |
3455 | unsigned char *srcp, *destp; | |
3456 | int i, result; | |
3457 | srcp = (char *) src; | |
3458 | destp = (char *) dest; | |
3459 | ||
3460 | result = 1; | |
3461 | while (i-- > 0) | |
3462 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3463 | return result; | |
3464 | #endif | |
3465 | return 1; | |
3466 | } | |
3467 | ||
3468 | /* | |
c5aa993b JM |
3469 | threadid:1, # always request threadid |
3470 | context_exists:2, | |
3471 | display:4, | |
3472 | unique_name:8, | |
3473 | more_display:16 | |
3474 | */ | |
c906108c SS |
3475 | |
3476 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3477 | ||
3478 | static char * | |
fba45db2 | 3479 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3480 | { |
23860348 MS |
3481 | *pkt++ = 'q'; /* Info Query */ |
3482 | *pkt++ = 'P'; /* process or thread info */ | |
3483 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3484 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3485 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3486 | return pkt; |
3487 | } | |
3488 | ||
23860348 | 3489 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3490 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3491 | add more fields as time goes by. */ |
c906108c | 3492 | |
23860348 | 3493 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3494 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3495 | fetch registers and its stack? */ |
c5aa993b | 3496 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3497 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3498 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3499 | the process. */ |
c906108c | 3500 | |
6b8edb51 | 3501 | int |
cecb1912 | 3502 | remote_target::remote_unpack_thread_info_response (const char *pkt, |
6b8edb51 PA |
3503 | threadref *expectedref, |
3504 | gdb_ext_thread_info *info) | |
c906108c | 3505 | { |
d01949b6 | 3506 | struct remote_state *rs = get_remote_state (); |
c906108c | 3507 | int mask, length; |
cfd77fa1 | 3508 | int tag; |
c906108c | 3509 | threadref ref; |
cecb1912 | 3510 | const char *limit = pkt + rs->buf.size (); /* Plausible parsing limit. */ |
c906108c SS |
3511 | int retval = 1; |
3512 | ||
23860348 | 3513 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3514 | info->active = 0; |
3515 | info->display[0] = '\0'; | |
3516 | info->shortname[0] = '\0'; | |
3517 | info->more_display[0] = '\0'; | |
3518 | ||
23860348 MS |
3519 | /* Assume the characters indicating the packet type have been |
3520 | stripped. */ | |
c906108c SS |
3521 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3522 | pkt = unpack_threadid (pkt, &ref); | |
3523 | ||
3524 | if (mask == 0) | |
8a3fe4f8 | 3525 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3526 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3527 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3528 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3529 | return 0; |
3530 | } | |
3531 | copy_threadref (&info->threadid, &ref); | |
3532 | ||
405feb71 | 3533 | /* Loop on tagged fields , try to bail if something goes wrong. */ |
c906108c | 3534 | |
23860348 MS |
3535 | /* Packets are terminated with nulls. */ |
3536 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3537 | { |
3538 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3539 | pkt = unpack_byte (pkt, &length); /* length */ |
3540 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3541 | { |
8a3fe4f8 | 3542 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3543 | retval = 0; |
3544 | break; | |
3545 | } | |
3546 | if (tag == TAG_THREADID) | |
3547 | { | |
3548 | if (length != 16) | |
3549 | { | |
8a3fe4f8 | 3550 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3551 | retval = 0; |
3552 | break; | |
3553 | } | |
3554 | pkt = unpack_threadid (pkt, &ref); | |
3555 | mask = mask & ~TAG_THREADID; | |
3556 | continue; | |
3557 | } | |
3558 | if (tag == TAG_EXISTS) | |
3559 | { | |
3560 | info->active = stub_unpack_int (pkt, length); | |
3561 | pkt += length; | |
3562 | mask = mask & ~(TAG_EXISTS); | |
3563 | if (length > 8) | |
3564 | { | |
8a3fe4f8 | 3565 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3566 | retval = 0; |
3567 | break; | |
3568 | } | |
3569 | continue; | |
3570 | } | |
3571 | if (tag == TAG_THREADNAME) | |
3572 | { | |
3573 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3574 | mask = mask & ~TAG_THREADNAME; | |
3575 | continue; | |
3576 | } | |
3577 | if (tag == TAG_DISPLAY) | |
3578 | { | |
3579 | pkt = unpack_string (pkt, &info->display[0], length); | |
3580 | mask = mask & ~TAG_DISPLAY; | |
3581 | continue; | |
3582 | } | |
3583 | if (tag == TAG_MOREDISPLAY) | |
3584 | { | |
3585 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3586 | mask = mask & ~TAG_MOREDISPLAY; | |
3587 | continue; | |
3588 | } | |
8a3fe4f8 | 3589 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3590 | break; /* Not a tag we know about. */ |
c906108c SS |
3591 | } |
3592 | return retval; | |
3593 | } | |
3594 | ||
6b8edb51 PA |
3595 | int |
3596 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3597 | int fieldset, | |
3598 | gdb_ext_thread_info *info) | |
c906108c | 3599 | { |
d01949b6 | 3600 | struct remote_state *rs = get_remote_state (); |
c906108c | 3601 | int result; |
c906108c | 3602 | |
8d64371b | 3603 | pack_threadinfo_request (rs->buf.data (), fieldset, threadid); |
2e9f7625 | 3604 | putpkt (rs->buf); |
8d64371b | 3605 | getpkt (&rs->buf, 0); |
3084dd77 PA |
3606 | |
3607 | if (rs->buf[0] == '\0') | |
3608 | return 0; | |
3609 | ||
8d64371b | 3610 | result = remote_unpack_thread_info_response (&rs->buf[2], |
23860348 | 3611 | threadid, info); |
c906108c SS |
3612 | return result; |
3613 | } | |
3614 | ||
c906108c SS |
3615 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3616 | ||
3617 | static char * | |
fba45db2 KB |
3618 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3619 | threadref *nextthread) | |
c906108c SS |
3620 | { |
3621 | *pkt++ = 'q'; /* info query packet */ | |
3622 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3623 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3624 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3625 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3626 | *pkt = '\0'; | |
3627 | return pkt; | |
3628 | } | |
3629 | ||
3630 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3631 | ||
6b8edb51 | 3632 | int |
cecb1912 | 3633 | remote_target::parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
3634 | threadref *original_echo, |
3635 | threadref *resultlist, | |
3636 | int *doneflag) | |
c906108c | 3637 | { |
d01949b6 | 3638 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3639 | int count, resultcount, done; |
3640 | ||
3641 | resultcount = 0; | |
3642 | /* Assume the 'q' and 'M chars have been stripped. */ | |
cecb1912 | 3643 | const char *limit = pkt + (rs->buf.size () - BUF_THREAD_ID_SIZE); |
23860348 | 3644 | /* done parse past here */ |
c906108c SS |
3645 | pkt = unpack_byte (pkt, &count); /* count field */ |
3646 | pkt = unpack_nibble (pkt, &done); | |
3647 | /* The first threadid is the argument threadid. */ | |
3648 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3649 | while ((count-- > 0) && (pkt < limit)) | |
3650 | { | |
3651 | pkt = unpack_threadid (pkt, resultlist++); | |
3652 | if (resultcount++ >= result_limit) | |
3653 | break; | |
3654 | } | |
3655 | if (doneflag) | |
3656 | *doneflag = done; | |
3657 | return resultcount; | |
3658 | } | |
3659 | ||
6dc54d91 PA |
3660 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3661 | qL packet is not supported, 0 on error and 1 on success. */ | |
3662 | ||
6b8edb51 PA |
3663 | int |
3664 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3665 | int result_limit, int *done, int *result_count, | |
3666 | threadref *threadlist) | |
c906108c | 3667 | { |
d01949b6 | 3668 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3669 | int result = 1; |
3670 | ||
405feb71 | 3671 | /* Truncate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3672 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3673 | >= get_remote_packet_size ()) | |
ea9c271d | 3674 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3675 | |
8d64371b TT |
3676 | pack_threadlist_request (rs->buf.data (), startflag, result_limit, |
3677 | nextthread); | |
6d820c5c | 3678 | putpkt (rs->buf); |
8d64371b TT |
3679 | getpkt (&rs->buf, 0); |
3680 | if (rs->buf[0] == '\0') | |
6dc54d91 PA |
3681 | { |
3682 | /* Packet not supported. */ | |
3683 | return -1; | |
3684 | } | |
3685 | ||
3686 | *result_count = | |
8d64371b | 3687 | parse_threadlist_response (&rs->buf[2], result_limit, |
6dc54d91 | 3688 | &rs->echo_nextthread, threadlist, done); |
c906108c | 3689 | |
0d031856 | 3690 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3691 | { |
23860348 | 3692 | /* FIXME: This is a good reason to drop the packet. */ |
405feb71 TV |
3693 | /* Possibly, there is a duplicate response. */ |
3694 | /* Possibilities : | |
dda83cd7 SM |
3695 | retransmit immediatly - race conditions |
3696 | retransmit after timeout - yes | |
3697 | exit | |
3698 | wait for packet, then exit | |
c906108c | 3699 | */ |
8a3fe4f8 | 3700 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3701 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3702 | } |
3703 | if (*result_count <= 0) | |
3704 | { | |
3705 | if (*done != 1) | |
3706 | { | |
8a3fe4f8 | 3707 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3708 | result = 0; |
3709 | } | |
3710 | return result; /* break; */ | |
3711 | } | |
3712 | if (*result_count > result_limit) | |
3713 | { | |
3714 | *result_count = 0; | |
8a3fe4f8 | 3715 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3716 | return 0; |
3717 | } | |
3718 | return result; | |
3719 | } | |
3720 | ||
6dc54d91 PA |
3721 | /* Fetch the list of remote threads, with the qL packet, and call |
3722 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3723 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3724 | STEPFUNCTION returns false. If the packet is not supported, | |
3725 | returns -1. */ | |
c906108c | 3726 | |
6b8edb51 PA |
3727 | int |
3728 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3729 | void *context, int looplimit) | |
c906108c | 3730 | { |
0d031856 | 3731 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3732 | int done, i, result_count; |
3733 | int startflag = 1; | |
3734 | int result = 1; | |
3735 | int loopcount = 0; | |
c906108c SS |
3736 | |
3737 | done = 0; | |
3738 | while (!done) | |
3739 | { | |
3740 | if (loopcount++ > looplimit) | |
3741 | { | |
3742 | result = 0; | |
8a3fe4f8 | 3743 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3744 | break; |
3745 | } | |
6dc54d91 PA |
3746 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3747 | MAXTHREADLISTRESULTS, | |
3748 | &done, &result_count, | |
3749 | rs->resultthreadlist); | |
3750 | if (result <= 0) | |
3751 | break; | |
23860348 | 3752 | /* Clear for later iterations. */ |
c906108c SS |
3753 | startflag = 0; |
3754 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3755 | if (result_count >= 1) | |
0d031856 TT |
3756 | copy_threadref (&rs->nextthread, |
3757 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3758 | i = 0; |
3759 | while (result_count--) | |
6dc54d91 PA |
3760 | { |
3761 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3762 | { | |
3763 | result = 0; | |
3764 | break; | |
3765 | } | |
3766 | } | |
c906108c SS |
3767 | } |
3768 | return result; | |
3769 | } | |
3770 | ||
6dc54d91 PA |
3771 | /* A thread found on the remote target. */ |
3772 | ||
21fe1c75 | 3773 | struct thread_item |
6dc54d91 | 3774 | { |
21fe1c75 SM |
3775 | explicit thread_item (ptid_t ptid_) |
3776 | : ptid (ptid_) | |
3777 | {} | |
3778 | ||
3779 | thread_item (thread_item &&other) = default; | |
3780 | thread_item &operator= (thread_item &&other) = default; | |
3781 | ||
3782 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3783 | ||
6dc54d91 PA |
3784 | /* The thread's PTID. */ |
3785 | ptid_t ptid; | |
3786 | ||
21fe1c75 SM |
3787 | /* The thread's extra info. */ |
3788 | std::string extra; | |
6dc54d91 | 3789 | |
21fe1c75 SM |
3790 | /* The thread's name. */ |
3791 | std::string name; | |
79efa585 | 3792 | |
6dc54d91 | 3793 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3794 | int core = -1; |
f6327dcb KB |
3795 | |
3796 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3797 | gdb::byte_vector thread_handle; |
21fe1c75 | 3798 | }; |
6dc54d91 PA |
3799 | |
3800 | /* Context passed around to the various methods listing remote | |
3801 | threads. As new threads are found, they're added to the ITEMS | |
3802 | vector. */ | |
3803 | ||
3804 | struct threads_listing_context | |
3805 | { | |
21fe1c75 SM |
3806 | /* Return true if this object contains an entry for a thread with ptid |
3807 | PTID. */ | |
6dc54d91 | 3808 | |
21fe1c75 SM |
3809 | bool contains_thread (ptid_t ptid) const |
3810 | { | |
3811 | auto match_ptid = [&] (const thread_item &item) | |
3812 | { | |
3813 | return item.ptid == ptid; | |
3814 | }; | |
80134cf5 | 3815 | |
21fe1c75 SM |
3816 | auto it = std::find_if (this->items.begin (), |
3817 | this->items.end (), | |
3818 | match_ptid); | |
80134cf5 | 3819 | |
21fe1c75 SM |
3820 | return it != this->items.end (); |
3821 | } | |
80134cf5 | 3822 | |
21fe1c75 | 3823 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3824 | |
21fe1c75 SM |
3825 | void remove_thread (ptid_t ptid) |
3826 | { | |
3827 | auto match_ptid = [&] (const thread_item &item) | |
3828 | { | |
dda83cd7 | 3829 | return item.ptid == ptid; |
21fe1c75 | 3830 | }; |
cbb8991c | 3831 | |
21fe1c75 SM |
3832 | auto it = std::remove_if (this->items.begin (), |
3833 | this->items.end (), | |
3834 | match_ptid); | |
cbb8991c | 3835 | |
21fe1c75 SM |
3836 | if (it != this->items.end ()) |
3837 | this->items.erase (it); | |
3838 | } | |
3839 | ||
3840 | /* The threads found on the remote target. */ | |
3841 | std::vector<thread_item> items; | |
3842 | }; | |
cbb8991c | 3843 | |
c906108c | 3844 | static int |
6dc54d91 | 3845 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3846 | { |
19ba03f4 SM |
3847 | struct threads_listing_context *context |
3848 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3849 | int pid = inferior_ptid.pid (); |
3850 | int lwp = threadref_to_int (ref); | |
3851 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3852 | |
21fe1c75 | 3853 | context->items.emplace_back (ptid); |
6dc54d91 | 3854 | |
c906108c SS |
3855 | return 1; /* continue iterator */ |
3856 | } | |
3857 | ||
3858 | #define CRAZY_MAX_THREADS 1000 | |
3859 | ||
6b8edb51 PA |
3860 | ptid_t |
3861 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3862 | { |
d01949b6 | 3863 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3864 | |
3865 | putpkt ("qC"); | |
8d64371b | 3866 | getpkt (&rs->buf, 0); |
2e9f7625 | 3867 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3868 | { |
256642e8 | 3869 | const char *obuf; |
c9f35b34 KB |
3870 | ptid_t result; |
3871 | ||
3872 | result = read_ptid (&rs->buf[2], &obuf); | |
2189c312 SM |
3873 | if (*obuf != '\0') |
3874 | remote_debug_printf ("warning: garbage in qC reply"); | |
c9f35b34 KB |
3875 | |
3876 | return result; | |
3877 | } | |
c906108c SS |
3878 | else |
3879 | return oldpid; | |
3880 | } | |
3881 | ||
6dc54d91 | 3882 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3883 | |
6b8edb51 PA |
3884 | int |
3885 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3886 | { |
6dc54d91 PA |
3887 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3888 | CRAZY_MAX_THREADS) >= 0) | |
3889 | return 1; | |
3890 | ||
3891 | return 0; | |
c906108c SS |
3892 | } |
3893 | ||
dc146f7c VP |
3894 | #if defined(HAVE_LIBEXPAT) |
3895 | ||
dc146f7c VP |
3896 | static void |
3897 | start_thread (struct gdb_xml_parser *parser, | |
3898 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3899 | void *user_data, |
3900 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3901 | { |
19ba03f4 SM |
3902 | struct threads_listing_context *data |
3903 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3904 | struct gdb_xml_value *attr; |
dc146f7c | 3905 | |
4d0fdd9b | 3906 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3907 | ptid_t ptid = read_ptid (id, NULL); |
3908 | ||
3909 | data->items.emplace_back (ptid); | |
3910 | thread_item &item = data->items.back (); | |
dc146f7c | 3911 | |
3d2c1d41 PA |
3912 | attr = xml_find_attribute (attributes, "core"); |
3913 | if (attr != NULL) | |
4d0fdd9b | 3914 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3915 | |
79efa585 | 3916 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3917 | if (attr != NULL) |
4d0fdd9b | 3918 | item.name = (const char *) attr->value.get (); |
79efa585 | 3919 | |
f6327dcb KB |
3920 | attr = xml_find_attribute (attributes, "handle"); |
3921 | if (attr != NULL) | |
4d0fdd9b | 3922 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3923 | } |
3924 | ||
3925 | static void | |
3926 | end_thread (struct gdb_xml_parser *parser, | |
3927 | const struct gdb_xml_element *element, | |
3928 | void *user_data, const char *body_text) | |
3929 | { | |
19ba03f4 SM |
3930 | struct threads_listing_context *data |
3931 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3932 | |
21fe1c75 SM |
3933 | if (body_text != NULL && *body_text != '\0') |
3934 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3935 | } |
3936 | ||
3937 | const struct gdb_xml_attribute thread_attributes[] = { | |
3938 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3939 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3940 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3941 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3942 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3943 | }; | |
3944 | ||
3945 | const struct gdb_xml_element thread_children[] = { | |
3946 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3947 | }; | |
3948 | ||
3949 | const struct gdb_xml_element threads_children[] = { | |
3950 | { "thread", thread_attributes, thread_children, | |
3951 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3952 | start_thread, end_thread }, | |
3953 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3954 | }; | |
3955 | ||
3956 | const struct gdb_xml_element threads_elements[] = { | |
3957 | { "threads", NULL, threads_children, | |
3958 | GDB_XML_EF_NONE, NULL, NULL }, | |
3959 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3960 | }; | |
3961 | ||
3962 | #endif | |
3963 | ||
6dc54d91 | 3964 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3965 | |
6b8edb51 PA |
3966 | int |
3967 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 3968 | { |
dc146f7c | 3969 | #if defined(HAVE_LIBEXPAT) |
ff52c073 | 3970 | if (m_features.packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3971 | { |
9018be22 | 3972 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 3973 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3974 | |
9018be22 | 3975 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3976 | { |
6dc54d91 | 3977 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3978 | threads_elements, xml->data (), context); |
dc146f7c VP |
3979 | } |
3980 | ||
6dc54d91 | 3981 | return 1; |
dc146f7c VP |
3982 | } |
3983 | #endif | |
3984 | ||
6dc54d91 PA |
3985 | return 0; |
3986 | } | |
3987 | ||
3988 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3989 | ||
6b8edb51 PA |
3990 | int |
3991 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
3992 | { |
3993 | struct remote_state *rs = get_remote_state (); | |
3994 | ||
b80fafe3 | 3995 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3996 | { |
256642e8 | 3997 | const char *bufp; |
6dc54d91 | 3998 | |
9d1f7ab2 | 3999 | putpkt ("qfThreadInfo"); |
8d64371b TT |
4000 | getpkt (&rs->buf, 0); |
4001 | bufp = rs->buf.data (); | |
9d1f7ab2 | 4002 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 4003 | { |
9d1f7ab2 MS |
4004 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
4005 | { | |
4006 | do | |
4007 | { | |
21fe1c75 SM |
4008 | ptid_t ptid = read_ptid (bufp, &bufp); |
4009 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
4010 | } |
4011 | while (*bufp++ == ','); /* comma-separated list */ | |
4012 | putpkt ("qsThreadInfo"); | |
8d64371b TT |
4013 | getpkt (&rs->buf, 0); |
4014 | bufp = rs->buf.data (); | |
9d1f7ab2 | 4015 | } |
6dc54d91 PA |
4016 | return 1; |
4017 | } | |
4018 | else | |
4019 | { | |
4020 | /* Packet not recognized. */ | |
4021 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
4022 | } |
4023 | } | |
4024 | ||
6dc54d91 PA |
4025 | return 0; |
4026 | } | |
4027 | ||
a05575d3 TBA |
4028 | /* Return true if INF only has one non-exited thread. */ |
4029 | ||
4030 | static bool | |
4031 | has_single_non_exited_thread (inferior *inf) | |
4032 | { | |
4033 | int count = 0; | |
4034 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) | |
4035 | if (++count > 1) | |
4036 | break; | |
4037 | return count == 1; | |
4038 | } | |
4039 | ||
e8032dde | 4040 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
4041 | targets. */ |
4042 | ||
f6ac5f3d PA |
4043 | void |
4044 | remote_target::update_thread_list () | |
6dc54d91 | 4045 | { |
6dc54d91 | 4046 | struct threads_listing_context context; |
ab970af1 | 4047 | int got_list = 0; |
e8032dde | 4048 | |
6dc54d91 PA |
4049 | /* We have a few different mechanisms to fetch the thread list. Try |
4050 | them all, starting with the most preferred one first, falling | |
4051 | back to older methods. */ | |
6b8edb51 PA |
4052 | if (remote_get_threads_with_qxfer (&context) |
4053 | || remote_get_threads_with_qthreadinfo (&context) | |
4054 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 4055 | { |
ab970af1 PA |
4056 | got_list = 1; |
4057 | ||
21fe1c75 | 4058 | if (context.items.empty () |
f6ac5f3d | 4059 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
4060 | { |
4061 | /* Some targets don't really support threads, but still | |
4062 | reply an (empty) thread list in response to the thread | |
4063 | listing packets, instead of replying "packet not | |
4064 | supported". Exit early so we don't delete the main | |
4065 | thread. */ | |
7d1a114c PA |
4066 | return; |
4067 | } | |
4068 | ||
ab970af1 PA |
4069 | /* CONTEXT now holds the current thread list on the remote |
4070 | target end. Delete GDB-side threads no longer found on the | |
4071 | target. */ | |
08036331 | 4072 | for (thread_info *tp : all_threads_safe ()) |
cbb8991c | 4073 | { |
5b6d1e4f PA |
4074 | if (tp->inf->process_target () != this) |
4075 | continue; | |
4076 | ||
21fe1c75 | 4077 | if (!context.contains_thread (tp->ptid)) |
ab970af1 | 4078 | { |
a05575d3 TBA |
4079 | /* Do not remove the thread if it is the last thread in |
4080 | the inferior. This situation happens when we have a | |
4081 | pending exit process status to process. Otherwise we | |
4082 | may end up with a seemingly live inferior (i.e. pid | |
4083 | != 0) that has no threads. */ | |
4084 | if (has_single_non_exited_thread (tp->inf)) | |
4085 | continue; | |
4086 | ||
ab970af1 | 4087 | /* Not found. */ |
00431a78 | 4088 | delete_thread (tp); |
ab970af1 | 4089 | } |
cbb8991c DB |
4090 | } |
4091 | ||
4092 | /* Remove any unreported fork child threads from CONTEXT so | |
4093 | that we don't interfere with follow fork, which is where | |
4094 | creation of such threads is handled. */ | |
4095 | remove_new_fork_children (&context); | |
74531fed | 4096 | |
ab970af1 | 4097 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 4098 | for (thread_item &item : context.items) |
6dc54d91 | 4099 | { |
21fe1c75 | 4100 | if (item.ptid != null_ptid) |
6dc54d91 | 4101 | { |
6dc54d91 | 4102 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
4103 | executing until proven otherwise with a stop reply. |
4104 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 4105 | stopped. */ |
8a82de58 | 4106 | bool executing = target_is_non_stop_p (); |
6dc54d91 | 4107 | |
21fe1c75 | 4108 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 4109 | |
5b6d1e4f | 4110 | thread_info *tp = find_thread_ptid (this, item.ptid); |
00431a78 | 4111 | remote_thread_info *info = get_remote_thread_info (tp); |
21fe1c75 | 4112 | info->core = item.core; |
7aabaf9d SM |
4113 | info->extra = std::move (item.extra); |
4114 | info->name = std::move (item.name); | |
4115 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
4116 | } |
4117 | } | |
4118 | } | |
4119 | ||
ab970af1 PA |
4120 | if (!got_list) |
4121 | { | |
4122 | /* If no thread listing method is supported, then query whether | |
4123 | each known thread is alive, one by one, with the T packet. | |
4124 | If the target doesn't support threads at all, then this is a | |
4125 | no-op. See remote_thread_alive. */ | |
4126 | prune_threads (); | |
4127 | } | |
9d1f7ab2 MS |
4128 | } |
4129 | ||
802188a7 | 4130 | /* |
9d1f7ab2 MS |
4131 | * Collect a descriptive string about the given thread. |
4132 | * The target may say anything it wants to about the thread | |
4133 | * (typically info about its blocked / runnable state, name, etc.). | |
4134 | * This string will appear in the info threads display. | |
802188a7 | 4135 | * |
9d1f7ab2 MS |
4136 | * Optional: targets are not required to implement this function. |
4137 | */ | |
4138 | ||
f6ac5f3d PA |
4139 | const char * |
4140 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 4141 | { |
d01949b6 | 4142 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
4143 | int set; |
4144 | threadref id; | |
4145 | struct gdb_ext_thread_info threadinfo; | |
9d1f7ab2 | 4146 | |
5d93a237 | 4147 | if (rs->remote_desc == 0) /* paranoia */ |
f34652de | 4148 | internal_error (_("remote_threads_extra_info")); |
9d1f7ab2 | 4149 | |
d7e15655 | 4150 | if (tp->ptid == magic_null_ptid |
e38504b3 | 4151 | || (tp->ptid.pid () != 0 && tp->ptid.lwp () == 0)) |
60e569b9 PA |
4152 | /* This is the main thread which was added by GDB. The remote |
4153 | server doesn't know about it. */ | |
4154 | return NULL; | |
4155 | ||
c76a8ea3 PA |
4156 | std::string &extra = get_remote_thread_info (tp)->extra; |
4157 | ||
4158 | /* If already have cached info, use it. */ | |
4159 | if (!extra.empty ()) | |
4160 | return extra.c_str (); | |
4161 | ||
ff52c073 | 4162 | if (m_features.packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 4163 | { |
c76a8ea3 PA |
4164 | /* If we're using qXfer:threads:read, then the extra info is |
4165 | included in the XML. So if we didn't have anything cached, | |
4166 | it's because there's really no extra info. */ | |
4167 | return NULL; | |
dc146f7c VP |
4168 | } |
4169 | ||
b80fafe3 | 4170 | if (rs->use_threadextra_query) |
9d1f7ab2 | 4171 | { |
8d64371b TT |
4172 | char *b = rs->buf.data (); |
4173 | char *endb = b + get_remote_packet_size (); | |
82f73884 PA |
4174 | |
4175 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
4176 | b += strlen (b); | |
4177 | write_ptid (b, endb, tp->ptid); | |
4178 | ||
2e9f7625 | 4179 | putpkt (rs->buf); |
8d64371b | 4180 | getpkt (&rs->buf, 0); |
2e9f7625 | 4181 | if (rs->buf[0] != 0) |
9d1f7ab2 | 4182 | { |
8d64371b TT |
4183 | extra.resize (strlen (rs->buf.data ()) / 2); |
4184 | hex2bin (rs->buf.data (), (gdb_byte *) &extra[0], extra.size ()); | |
c76a8ea3 | 4185 | return extra.c_str (); |
9d1f7ab2 | 4186 | } |
0f71a2f6 | 4187 | } |
9d1f7ab2 MS |
4188 | |
4189 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 4190 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
4191 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
4192 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
e38504b3 | 4193 | int_to_threadref (&id, tp->ptid.lwp ()); |
9d1f7ab2 MS |
4194 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
4195 | if (threadinfo.active) | |
0f71a2f6 | 4196 | { |
9d1f7ab2 | 4197 | if (*threadinfo.shortname) |
c76a8ea3 | 4198 | string_appendf (extra, " Name: %s", threadinfo.shortname); |
9d1f7ab2 | 4199 | if (*threadinfo.display) |
c76a8ea3 PA |
4200 | { |
4201 | if (!extra.empty ()) | |
4202 | extra += ','; | |
4203 | string_appendf (extra, " State: %s", threadinfo.display); | |
4204 | } | |
9d1f7ab2 | 4205 | if (*threadinfo.more_display) |
c5aa993b | 4206 | { |
c76a8ea3 PA |
4207 | if (!extra.empty ()) |
4208 | extra += ','; | |
4209 | string_appendf (extra, " Priority: %s", threadinfo.more_display); | |
c5aa993b | 4210 | } |
c76a8ea3 | 4211 | return extra.c_str (); |
0f71a2f6 | 4212 | } |
9d1f7ab2 | 4213 | return NULL; |
0f71a2f6 | 4214 | } |
c906108c | 4215 | \f |
c5aa993b | 4216 | |
f6ac5f3d PA |
4217 | bool |
4218 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
4219 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
4220 | { |
4221 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 4222 | char *p = rs->buf.data (); |
0fb4aa4b | 4223 | |
bba74b36 | 4224 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
4225 | p += strlen (p); |
4226 | p += hexnumstr (p, addr); | |
4227 | putpkt (rs->buf); | |
8d64371b TT |
4228 | getpkt (&rs->buf, 0); |
4229 | p = rs->buf.data (); | |
0fb4aa4b PA |
4230 | |
4231 | if (*p == 'E') | |
4232 | error (_("Remote failure reply: %s"), p); | |
4233 | ||
4234 | if (*p++ == 'm') | |
4235 | { | |
256642e8 | 4236 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 4237 | return true; |
0fb4aa4b PA |
4238 | } |
4239 | ||
5d9310c4 | 4240 | return false; |
0fb4aa4b PA |
4241 | } |
4242 | ||
f6ac5f3d PA |
4243 | std::vector<static_tracepoint_marker> |
4244 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
4245 | { |
4246 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 4247 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 4248 | const char *p; |
5d9310c4 | 4249 | static_tracepoint_marker marker; |
0fb4aa4b PA |
4250 | |
4251 | /* Ask for a first packet of static tracepoint marker | |
4252 | definition. */ | |
4253 | putpkt ("qTfSTM"); | |
8d64371b TT |
4254 | getpkt (&rs->buf, 0); |
4255 | p = rs->buf.data (); | |
0fb4aa4b PA |
4256 | if (*p == 'E') |
4257 | error (_("Remote failure reply: %s"), p); | |
4258 | ||
0fb4aa4b PA |
4259 | while (*p++ == 'm') |
4260 | { | |
0fb4aa4b PA |
4261 | do |
4262 | { | |
5d9310c4 | 4263 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 4264 | |
5d9310c4 SM |
4265 | if (strid == NULL || marker.str_id == strid) |
4266 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
4267 | } |
4268 | while (*p++ == ','); /* comma-separated list */ | |
4269 | /* Ask for another packet of static tracepoint definition. */ | |
4270 | putpkt ("qTsSTM"); | |
8d64371b TT |
4271 | getpkt (&rs->buf, 0); |
4272 | p = rs->buf.data (); | |
0fb4aa4b PA |
4273 | } |
4274 | ||
0fb4aa4b PA |
4275 | return markers; |
4276 | } | |
4277 | ||
4278 | \f | |
10760264 JB |
4279 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
4280 | ||
f6ac5f3d | 4281 | ptid_t |
c80e29db | 4282 | remote_target::get_ada_task_ptid (long lwp, ULONGEST thread) |
10760264 | 4283 | { |
184ea2f7 | 4284 | return ptid_t (inferior_ptid.pid (), lwp); |
10760264 JB |
4285 | } |
4286 | \f | |
4287 | ||
24b06219 | 4288 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 4289 | |
6b8edb51 PA |
4290 | void |
4291 | remote_target::extended_remote_restart () | |
c906108c | 4292 | { |
d01949b6 | 4293 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4294 | |
4295 | /* Send the restart command; for reasons I don't understand the | |
4296 | remote side really expects a number after the "R". */ | |
8d64371b | 4297 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "R%x", 0); |
6d820c5c | 4298 | putpkt (rs->buf); |
c906108c | 4299 | |
ad9a8f3f | 4300 | remote_fileio_reset (); |
c906108c SS |
4301 | } |
4302 | \f | |
4303 | /* Clean up connection to a remote debugger. */ | |
4304 | ||
f6ac5f3d PA |
4305 | void |
4306 | remote_target::close () | |
c906108c | 4307 | { |
048094ac | 4308 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4309 | terminal_ours (); |
ce5ce7ed | 4310 | |
6b8edb51 PA |
4311 | trace_reset_local_state (); |
4312 | ||
4313 | delete this; | |
4314 | } | |
4315 | ||
4316 | remote_target::~remote_target () | |
4317 | { | |
4318 | struct remote_state *rs = get_remote_state (); | |
4319 | ||
4320 | /* Check for NULL because we may get here with a partially | |
4321 | constructed target/connection. */ | |
4322 | if (rs->remote_desc == nullptr) | |
4323 | return; | |
4324 | ||
4325 | serial_close (rs->remote_desc); | |
4326 | ||
4327 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4328 | everything of this target. */ |
6b8edb51 | 4329 | discard_pending_stop_replies_in_queue (); |
74531fed | 4330 | |
6b8edb51 PA |
4331 | if (rs->remote_async_inferior_event_token) |
4332 | delete_async_event_handler (&rs->remote_async_inferior_event_token); | |
722247f1 | 4333 | |
97dfbadd | 4334 | delete rs->notif_state; |
c906108c SS |
4335 | } |
4336 | ||
23860348 | 4337 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4338 | |
6b8edb51 PA |
4339 | void |
4340 | remote_target::get_offsets () | |
c906108c | 4341 | { |
d01949b6 | 4342 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4343 | char *buf; |
085dd6e6 | 4344 | char *ptr; |
31d99776 DJ |
4345 | int lose, num_segments = 0, do_sections, do_segments; |
4346 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
31d99776 | 4347 | |
a42d7dd8 | 4348 | if (current_program_space->symfile_object_file == NULL) |
31d99776 | 4349 | return; |
c906108c SS |
4350 | |
4351 | putpkt ("qOffsets"); | |
8d64371b TT |
4352 | getpkt (&rs->buf, 0); |
4353 | buf = rs->buf.data (); | |
c906108c SS |
4354 | |
4355 | if (buf[0] == '\000') | |
4356 | return; /* Return silently. Stub doesn't support | |
23860348 | 4357 | this command. */ |
c906108c SS |
4358 | if (buf[0] == 'E') |
4359 | { | |
8a3fe4f8 | 4360 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4361 | return; |
4362 | } | |
4363 | ||
4364 | /* Pick up each field in turn. This used to be done with scanf, but | |
4365 | scanf will make trouble if CORE_ADDR size doesn't match | |
4366 | conversion directives correctly. The following code will work | |
4367 | with any size of CORE_ADDR. */ | |
4368 | text_addr = data_addr = bss_addr = 0; | |
4369 | ptr = buf; | |
4370 | lose = 0; | |
4371 | ||
61012eef | 4372 | if (startswith (ptr, "Text=")) |
c906108c SS |
4373 | { |
4374 | ptr += 5; | |
4375 | /* Don't use strtol, could lose on big values. */ | |
4376 | while (*ptr && *ptr != ';') | |
4377 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4378 | |
61012eef | 4379 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4380 | { |
4381 | ptr += 6; | |
4382 | while (*ptr && *ptr != ';') | |
4383 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4384 | } | |
4385 | else | |
4386 | lose = 1; | |
4387 | ||
61012eef | 4388 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4389 | { |
4390 | ptr += 5; | |
4391 | while (*ptr && *ptr != ';') | |
4392 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4393 | |
31d99776 DJ |
4394 | if (bss_addr != data_addr) |
4395 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4396 | } | |
4397 | else | |
4398 | lose = 1; | |
4399 | } | |
61012eef | 4400 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4401 | { |
31d99776 DJ |
4402 | ptr += 8; |
4403 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4404 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4405 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4406 | num_segments = 1; | |
4407 | ||
61012eef | 4408 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4409 | { |
4410 | ptr += 9; | |
4411 | while (*ptr && *ptr != ';') | |
4412 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4413 | num_segments++; | |
4414 | } | |
c906108c SS |
4415 | } |
4416 | else | |
4417 | lose = 1; | |
4418 | ||
4419 | if (lose) | |
8a3fe4f8 | 4420 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4421 | else if (*ptr != '\0') |
4422 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4423 | |
a42d7dd8 TT |
4424 | objfile *objf = current_program_space->symfile_object_file; |
4425 | section_offsets offs = objf->section_offsets; | |
c906108c | 4426 | |
98badbfd | 4427 | symfile_segment_data_up data = get_symfile_segment_data (objf->obfd.get ()); |
31d99776 DJ |
4428 | do_segments = (data != NULL); |
4429 | do_sections = num_segments == 0; | |
c906108c | 4430 | |
28c32713 | 4431 | if (num_segments > 0) |
31d99776 | 4432 | { |
31d99776 DJ |
4433 | segments[0] = text_addr; |
4434 | segments[1] = data_addr; | |
4435 | } | |
28c32713 JB |
4436 | /* If we have two segments, we can still try to relocate everything |
4437 | by assuming that the .text and .data offsets apply to the whole | |
4438 | text and data segments. Convert the offsets given in the packet | |
4439 | to base addresses for symfile_map_offsets_to_segments. */ | |
68b888ff | 4440 | else if (data != nullptr && data->segments.size () == 2) |
28c32713 | 4441 | { |
68b888ff SM |
4442 | segments[0] = data->segments[0].base + text_addr; |
4443 | segments[1] = data->segments[1].base + data_addr; | |
28c32713 JB |
4444 | num_segments = 2; |
4445 | } | |
8d385431 DJ |
4446 | /* If the object file has only one segment, assume that it is text |
4447 | rather than data; main programs with no writable data are rare, | |
4448 | but programs with no code are useless. Of course the code might | |
4449 | have ended up in the data segment... to detect that we would need | |
4450 | the permissions here. */ | |
68b888ff | 4451 | else if (data && data->segments.size () == 1) |
8d385431 | 4452 | { |
68b888ff | 4453 | segments[0] = data->segments[0].base + text_addr; |
8d385431 DJ |
4454 | num_segments = 1; |
4455 | } | |
28c32713 JB |
4456 | /* There's no way to relocate by segment. */ |
4457 | else | |
4458 | do_segments = 0; | |
31d99776 DJ |
4459 | |
4460 | if (do_segments) | |
4461 | { | |
98badbfd | 4462 | int ret = symfile_map_offsets_to_segments (objf->obfd.get (), |
62982abd SM |
4463 | data.get (), offs, |
4464 | num_segments, segments); | |
31d99776 DJ |
4465 | |
4466 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4467 | error (_("Can not handle qOffsets TextSeg " |
4468 | "response with this symbol file")); | |
31d99776 DJ |
4469 | |
4470 | if (ret > 0) | |
4471 | do_sections = 0; | |
4472 | } | |
c906108c | 4473 | |
31d99776 DJ |
4474 | if (do_sections) |
4475 | { | |
a42d7dd8 | 4476 | offs[SECT_OFF_TEXT (objf)] = text_addr; |
31d99776 | 4477 | |
3e43a32a MS |
4478 | /* This is a temporary kludge to force data and bss to use the |
4479 | same offsets because that's what nlmconv does now. The real | |
4480 | solution requires changes to the stub and remote.c that I | |
4481 | don't have time to do right now. */ | |
31d99776 | 4482 | |
a42d7dd8 TT |
4483 | offs[SECT_OFF_DATA (objf)] = data_addr; |
4484 | offs[SECT_OFF_BSS (objf)] = data_addr; | |
31d99776 | 4485 | } |
c906108c | 4486 | |
a42d7dd8 | 4487 | objfile_relocate (objf, offs); |
c906108c SS |
4488 | } |
4489 | ||
9a7071a8 | 4490 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4491 | |
4492 | void | |
4493 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4494 | { |
5d93a237 TT |
4495 | struct remote_state *rs = get_remote_state (); |
4496 | ||
9a7071a8 | 4497 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4498 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4499 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4500 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4501 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4502 | { | |
5d93a237 | 4503 | serial_send_break (rs->remote_desc); |
c33e31fd | 4504 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4505 | } |
4506 | else | |
f34652de | 4507 | internal_error (_("Invalid value for interrupt_sequence_mode: %s."), |
9a7071a8 JB |
4508 | interrupt_sequence_mode); |
4509 | } | |
4510 | ||
3405876a PA |
4511 | |
4512 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4513 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4514 | ||
4515 | static ptid_t | |
e3b2741b | 4516 | stop_reply_extract_thread (const char *stop_reply) |
3405876a PA |
4517 | { |
4518 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4519 | { | |
256642e8 | 4520 | const char *p; |
3405876a PA |
4521 | |
4522 | /* Txx r:val ; r:val (...) */ | |
4523 | p = &stop_reply[3]; | |
4524 | ||
4525 | /* Look for "register" named "thread". */ | |
4526 | while (*p != '\0') | |
4527 | { | |
256642e8 | 4528 | const char *p1; |
3405876a PA |
4529 | |
4530 | p1 = strchr (p, ':'); | |
4531 | if (p1 == NULL) | |
4532 | return null_ptid; | |
4533 | ||
4534 | if (strncmp (p, "thread", p1 - p) == 0) | |
4535 | return read_ptid (++p1, &p); | |
4536 | ||
4537 | p1 = strchr (p, ';'); | |
4538 | if (p1 == NULL) | |
4539 | return null_ptid; | |
4540 | p1++; | |
4541 | ||
4542 | p = p1; | |
4543 | } | |
4544 | } | |
4545 | ||
4546 | return null_ptid; | |
4547 | } | |
4548 | ||
b7ea362b PA |
4549 | /* Determine the remote side's current thread. If we have a stop |
4550 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4551 | "thread" register we can extract the current thread from. If not, | |
4552 | ask the remote which is the current thread with qC. The former | |
4553 | method avoids a roundtrip. */ | |
4554 | ||
6b8edb51 | 4555 | ptid_t |
e3b2741b | 4556 | remote_target::get_current_thread (const char *wait_status) |
b7ea362b | 4557 | { |
6a49a997 | 4558 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4559 | |
4560 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4561 | the target architecture, which we haven't yet fully determined at | |
4562 | this point. */ | |
4563 | if (wait_status != NULL) | |
4564 | ptid = stop_reply_extract_thread (wait_status); | |
d7e15655 | 4565 | if (ptid == null_ptid) |
b7ea362b PA |
4566 | ptid = remote_current_thread (inferior_ptid); |
4567 | ||
4568 | return ptid; | |
4569 | } | |
4570 | ||
49c62f2e PA |
4571 | /* Query the remote target for which is the current thread/process, |
4572 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4573 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4574 | to return the current thread. |
4575 | ||
4576 | This function is called after handling the '?' or 'vRun' packets, | |
4577 | whose response is a stop reply from which we can also try | |
4578 | extracting the thread. If the target doesn't support the explicit | |
4579 | qC query, we infer the current thread from that stop reply, passed | |
64d38fdd | 4580 | in in WAIT_STATUS, which may be NULL. |
49c62f2e | 4581 | |
64d38fdd JM |
4582 | The function returns pointer to the main thread of the inferior. */ |
4583 | ||
4584 | thread_info * | |
e3b2741b | 4585 | remote_target::add_current_inferior_and_thread (const char *wait_status) |
49c62f2e | 4586 | { |
9ab8741a | 4587 | bool fake_pid_p = false; |
49c62f2e | 4588 | |
0ac55310 | 4589 | switch_to_no_thread (); |
49c62f2e | 4590 | |
0ac55310 PA |
4591 | /* Now, if we have thread information, update the current thread's |
4592 | ptid. */ | |
87215ad1 | 4593 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4594 | |
87215ad1 | 4595 | if (curr_ptid != null_ptid) |
49c62f2e | 4596 | { |
ff52c073 | 4597 | if (!m_features.remote_multi_process_p ()) |
9ab8741a | 4598 | fake_pid_p = true; |
49c62f2e PA |
4599 | } |
4600 | else | |
4601 | { | |
4602 | /* Without this, some commands which require an active target | |
4603 | (such as kill) won't work. This variable serves (at least) | |
4604 | double duty as both the pid of the target process (if it has | |
4605 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4606 | curr_ptid = magic_null_ptid; |
9ab8741a | 4607 | fake_pid_p = true; |
49c62f2e PA |
4608 | } |
4609 | ||
e99b03dc | 4610 | remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1); |
49c62f2e | 4611 | |
87215ad1 SDJ |
4612 | /* Add the main thread and switch to it. Don't try reading |
4613 | registers yet, since we haven't fetched the target description | |
4614 | yet. */ | |
5b6d1e4f | 4615 | thread_info *tp = add_thread_silent (this, curr_ptid); |
87215ad1 | 4616 | switch_to_thread_no_regs (tp); |
64d38fdd JM |
4617 | |
4618 | return tp; | |
49c62f2e PA |
4619 | } |
4620 | ||
6efcd9a8 PA |
4621 | /* Print info about a thread that was found already stopped on |
4622 | connection. */ | |
4623 | ||
1edb66d8 SM |
4624 | void |
4625 | remote_target::print_one_stopped_thread (thread_info *thread) | |
6efcd9a8 | 4626 | { |
1edb66d8 SM |
4627 | target_waitstatus ws; |
4628 | ||
4629 | /* If there is a pending waitstatus, use it. If there isn't it's because | |
4630 | the thread's stop was reported with TARGET_WAITKIND_STOPPED / GDB_SIGNAL_0 | |
4631 | and process_initial_stop_replies decided it wasn't interesting to save | |
4632 | and report to the core. */ | |
4633 | if (thread->has_pending_waitstatus ()) | |
4634 | { | |
4635 | ws = thread->pending_waitstatus (); | |
4636 | thread->clear_pending_waitstatus (); | |
4637 | } | |
4638 | else | |
4639 | { | |
183be222 | 4640 | ws.set_stopped (GDB_SIGNAL_0); |
1edb66d8 | 4641 | } |
6efcd9a8 | 4642 | |
00431a78 | 4643 | switch_to_thread (thread); |
1edb66d8 | 4644 | thread->set_stop_pc (get_frame_pc (get_current_frame ())); |
6efcd9a8 PA |
4645 | set_current_sal_from_frame (get_current_frame ()); |
4646 | ||
1edb66d8 SM |
4647 | /* For "info program". */ |
4648 | set_last_target_status (this, thread->ptid, ws); | |
6efcd9a8 | 4649 | |
183be222 | 4650 | if (ws.kind () == TARGET_WAITKIND_STOPPED) |
6efcd9a8 | 4651 | { |
183be222 | 4652 | enum gdb_signal sig = ws.sig (); |
6efcd9a8 PA |
4653 | |
4654 | if (signal_print_state (sig)) | |
76727919 | 4655 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4656 | } |
76727919 | 4657 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4658 | } |
4659 | ||
221e1a37 PA |
4660 | /* Process all initial stop replies the remote side sent in response |
4661 | to the ? packet. These indicate threads that were already stopped | |
4662 | on initial connection. We mark these threads as stopped and print | |
4663 | their current frame before giving the user the prompt. */ | |
4664 | ||
6b8edb51 PA |
4665 | void |
4666 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4667 | { |
4668 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4669 | struct thread_info *selected = NULL; |
4670 | struct thread_info *lowest_stopped = NULL; | |
4671 | struct thread_info *first = NULL; | |
221e1a37 | 4672 | |
1edb66d8 SM |
4673 | /* This is only used when the target is non-stop. */ |
4674 | gdb_assert (target_is_non_stop_p ()); | |
4675 | ||
221e1a37 PA |
4676 | /* Consume the initial pending events. */ |
4677 | while (pending_stop_replies-- > 0) | |
4678 | { | |
4679 | ptid_t waiton_ptid = minus_one_ptid; | |
4680 | ptid_t event_ptid; | |
4681 | struct target_waitstatus ws; | |
4682 | int ignore_event = 0; | |
4683 | ||
221e1a37 PA |
4684 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); |
4685 | if (remote_debug) | |
c272a98c | 4686 | print_target_wait_results (waiton_ptid, event_ptid, ws); |
221e1a37 | 4687 | |
183be222 | 4688 | switch (ws.kind ()) |
221e1a37 PA |
4689 | { |
4690 | case TARGET_WAITKIND_IGNORE: | |
4691 | case TARGET_WAITKIND_NO_RESUMED: | |
4692 | case TARGET_WAITKIND_SIGNALLED: | |
4693 | case TARGET_WAITKIND_EXITED: | |
4694 | /* We shouldn't see these, but if we do, just ignore. */ | |
2189c312 | 4695 | remote_debug_printf ("event ignored"); |
221e1a37 PA |
4696 | ignore_event = 1; |
4697 | break; | |
4698 | ||
221e1a37 PA |
4699 | default: |
4700 | break; | |
4701 | } | |
4702 | ||
4703 | if (ignore_event) | |
4704 | continue; | |
4705 | ||
5b6d1e4f | 4706 | thread_info *evthread = find_thread_ptid (this, event_ptid); |
221e1a37 | 4707 | |
183be222 | 4708 | if (ws.kind () == TARGET_WAITKIND_STOPPED) |
221e1a37 | 4709 | { |
183be222 | 4710 | enum gdb_signal sig = ws.sig (); |
221e1a37 PA |
4711 | |
4712 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4713 | instead of signal 0. Suppress it. */ | |
4714 | if (sig == GDB_SIGNAL_TRAP) | |
4715 | sig = GDB_SIGNAL_0; | |
1edb66d8 | 4716 | evthread->set_stop_signal (sig); |
183be222 | 4717 | ws.set_stopped (sig); |
6efcd9a8 | 4718 | } |
221e1a37 | 4719 | |
183be222 SM |
4720 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
4721 | || ws.sig () != GDB_SIGNAL_0) | |
1edb66d8 | 4722 | evthread->set_pending_waitstatus (ws); |
6efcd9a8 | 4723 | |
719546c4 SM |
4724 | set_executing (this, event_ptid, false); |
4725 | set_running (this, event_ptid, false); | |
c9d22089 | 4726 | get_remote_thread_info (evthread)->set_not_resumed (); |
6efcd9a8 PA |
4727 | } |
4728 | ||
4729 | /* "Notice" the new inferiors before anything related to | |
4730 | registers/memory. */ | |
5b6d1e4f | 4731 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4732 | { |
30220b46 | 4733 | inf->needs_setup = true; |
6efcd9a8 PA |
4734 | |
4735 | if (non_stop) | |
4736 | { | |
08036331 | 4737 | thread_info *thread = any_live_thread_of_inferior (inf); |
00431a78 | 4738 | notice_new_inferior (thread, thread->state == THREAD_RUNNING, |
6efcd9a8 PA |
4739 | from_tty); |
4740 | } | |
4741 | } | |
4742 | ||
4743 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4744 | records the threads' stop pc, so must be done after "noticing" | |
4745 | the inferiors. */ | |
4746 | if (!non_stop) | |
4747 | { | |
abe8cab7 SM |
4748 | { |
4749 | /* At this point, the remote target is not async. It needs to be for | |
4750 | the poll in stop_all_threads to consider events from it, so enable | |
4751 | it temporarily. */ | |
4752 | gdb_assert (!this->is_async_p ()); | |
4a570176 TT |
4753 | SCOPE_EXIT { target_async (false); }; |
4754 | target_async (true); | |
4f5539f0 | 4755 | stop_all_threads ("remote connect in all-stop"); |
abe8cab7 | 4756 | } |
6efcd9a8 PA |
4757 | |
4758 | /* If all threads of an inferior were already stopped, we | |
4759 | haven't setup the inferior yet. */ | |
5b6d1e4f | 4760 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4761 | { |
6efcd9a8 PA |
4762 | if (inf->needs_setup) |
4763 | { | |
08036331 | 4764 | thread_info *thread = any_live_thread_of_inferior (inf); |
6efcd9a8 PA |
4765 | switch_to_thread_no_regs (thread); |
4766 | setup_inferior (0); | |
4767 | } | |
4768 | } | |
221e1a37 | 4769 | } |
6efcd9a8 PA |
4770 | |
4771 | /* Now go over all threads that are stopped, and print their current | |
4772 | frame. If all-stop, then if there's a signalled thread, pick | |
4773 | that as current. */ | |
5b6d1e4f | 4774 | for (thread_info *thread : all_non_exited_threads (this)) |
6efcd9a8 | 4775 | { |
6efcd9a8 PA |
4776 | if (first == NULL) |
4777 | first = thread; | |
4778 | ||
4779 | if (!non_stop) | |
00431a78 | 4780 | thread->set_running (false); |
6efcd9a8 PA |
4781 | else if (thread->state != THREAD_STOPPED) |
4782 | continue; | |
4783 | ||
1edb66d8 | 4784 | if (selected == nullptr && thread->has_pending_waitstatus ()) |
6efcd9a8 PA |
4785 | selected = thread; |
4786 | ||
5d5658a1 PA |
4787 | if (lowest_stopped == NULL |
4788 | || thread->inf->num < lowest_stopped->inf->num | |
4789 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4790 | lowest_stopped = thread; |
4791 | ||
4792 | if (non_stop) | |
4793 | print_one_stopped_thread (thread); | |
4794 | } | |
4795 | ||
4796 | /* In all-stop, we only print the status of one thread, and leave | |
4797 | others with their status pending. */ | |
4798 | if (!non_stop) | |
4799 | { | |
08036331 | 4800 | thread_info *thread = selected; |
6efcd9a8 PA |
4801 | if (thread == NULL) |
4802 | thread = lowest_stopped; | |
4803 | if (thread == NULL) | |
4804 | thread = first; | |
4805 | ||
4806 | print_one_stopped_thread (thread); | |
4807 | } | |
221e1a37 PA |
4808 | } |
4809 | ||
45664f16 | 4810 | /* Mark a remote_target as starting (by setting the starting_up flag within |
7a34f66b AB |
4811 | its remote_state) for the lifetime of this object. The reference count |
4812 | on the remote target is temporarily incremented, to prevent the target | |
4813 | being deleted under our feet. */ | |
4814 | ||
4815 | struct scoped_mark_target_starting | |
4816 | { | |
4817 | /* Constructor, TARGET is the target to be marked as starting, its | |
4818 | reference count will be incremented. */ | |
4819 | scoped_mark_target_starting (remote_target *target) | |
45664f16 AB |
4820 | : m_remote_target (remote_target_ref::new_reference (target)), |
4821 | m_restore_starting_up (set_starting_up_flag (target)) | |
4822 | { /* Nothing. */ } | |
4823 | ||
4824 | private: | |
7a34f66b | 4825 | |
45664f16 AB |
4826 | /* Helper function, set the starting_up flag on TARGET and return an |
4827 | object which, when it goes out of scope, will restore the previous | |
4828 | value of the starting_up flag. */ | |
4829 | static scoped_restore_tmpl<bool> | |
4830 | set_starting_up_flag (remote_target *target) | |
7a34f66b | 4831 | { |
45664f16 AB |
4832 | remote_state *rs = target->get_remote_state (); |
4833 | gdb_assert (!rs->starting_up); | |
4834 | return make_scoped_restore (&rs->starting_up, true); | |
7a34f66b AB |
4835 | } |
4836 | ||
45664f16 AB |
4837 | /* A gdb::ref_ptr pointer to a remote_target. */ |
4838 | using remote_target_ref = gdb::ref_ptr<remote_target, target_ops_ref_policy>; | |
4839 | ||
4840 | /* A reference to the target on which we are operating. */ | |
4841 | remote_target_ref m_remote_target; | |
7a34f66b | 4842 | |
45664f16 AB |
4843 | /* An object which restores the previous value of the starting_up flag |
4844 | when it goes out of scope. */ | |
4845 | scoped_restore_tmpl<bool> m_restore_starting_up; | |
7a34f66b AB |
4846 | }; |
4847 | ||
288712bb AB |
4848 | /* Helper for remote_target::start_remote, start the remote connection and |
4849 | sync state. Return true if everything goes OK, otherwise, return false. | |
4850 | This function exists so that the scoped_restore created within it will | |
4851 | expire before we return to remote_target::start_remote. */ | |
048094ac | 4852 | |
288712bb AB |
4853 | bool |
4854 | remote_target::start_remote_1 (int from_tty, int extended_p) | |
c906108c | 4855 | { |
2189c312 SM |
4856 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
4857 | ||
c8d104ad | 4858 | struct remote_state *rs = get_remote_state (); |
8621d6a9 | 4859 | |
048094ac PA |
4860 | /* Signal other parts that we're going through the initial setup, |
4861 | and so things may not be stable yet. E.g., we don't try to | |
4862 | install tracepoints until we've relocated symbols. Also, a | |
4863 | Ctrl-C before we're connected and synced up can't interrupt the | |
4864 | target. Instead, it offers to drop the (potentially wedged) | |
4865 | connection. */ | |
7a34f66b | 4866 | scoped_mark_target_starting target_is_starting (this); |
048094ac | 4867 | |
522002f9 | 4868 | QUIT; |
c906108c | 4869 | |
9a7071a8 JB |
4870 | if (interrupt_on_connect) |
4871 | send_interrupt_sequence (); | |
4872 | ||
57e12211 | 4873 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4874 | remote_serial_write ("+", 1); |
1e51243a | 4875 | |
c8d104ad PA |
4876 | /* The first packet we send to the target is the optional "supported |
4877 | packets" request. If the target can answer this, it will tell us | |
4878 | which later probes to skip. */ | |
4879 | remote_query_supported (); | |
4880 | ||
d914c394 | 4881 | /* If the stub wants to get a QAllow, compose one and send it. */ |
ff52c073 | 4882 | if (m_features.packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4883 | set_permissions (); |
d914c394 | 4884 | |
57809e5e JK |
4885 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4886 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4887 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4888 | invalid reply and GDB would return error in | |
4889 | remote_hostio_set_filesystem, making remote files access impossible. | |
4890 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4891 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4892 | { | |
4893 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4894 | ||
4895 | putpkt (v_mustreplyempty); | |
8d64371b TT |
4896 | getpkt (&rs->buf, 0); |
4897 | if (strcmp (rs->buf.data (), "OK") == 0) | |
ff52c073 CS |
4898 | { |
4899 | m_features.m_protocol_packets[PACKET_vFile_setfs].support | |
4900 | = PACKET_DISABLE; | |
4901 | } | |
8d64371b | 4902 | else if (strcmp (rs->buf.data (), "") != 0) |
57809e5e | 4903 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, |
8d64371b | 4904 | rs->buf.data ()); |
57809e5e JK |
4905 | } |
4906 | ||
c8d104ad PA |
4907 | /* Next, we possibly activate noack mode. |
4908 | ||
4909 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4910 | enable noack mode if the stub reported a wish for it with | |
4911 | qSupported. | |
4912 | ||
4913 | If set to TRUE, then enable noack mode even if the stub didn't | |
4914 | report it in qSupported. If the stub doesn't reply OK, the | |
4915 | session ends with an error. | |
4916 | ||
4917 | If FALSE, then don't activate noack mode, regardless of what the | |
4918 | stub claimed should be the default with qSupported. */ | |
4919 | ||
ff52c073 | 4920 | if (m_features.packet_support (PACKET_QStartNoAckMode) != PACKET_DISABLE) |
c8d104ad PA |
4921 | { |
4922 | putpkt ("QStartNoAckMode"); | |
8d64371b | 4923 | getpkt (&rs->buf, 0); |
ff52c073 | 4924 | if (m_features.packet_ok (rs->buf, PACKET_QStartNoAckMode) == PACKET_OK) |
c8d104ad PA |
4925 | rs->noack_mode = 1; |
4926 | } | |
4927 | ||
04bd08de | 4928 | if (extended_p) |
5fe04517 PA |
4929 | { |
4930 | /* Tell the remote that we are using the extended protocol. */ | |
4931 | putpkt ("!"); | |
8d64371b | 4932 | getpkt (&rs->buf, 0); |
5fe04517 PA |
4933 | } |
4934 | ||
9b224c5e PA |
4935 | /* Let the target know which signals it is allowed to pass down to |
4936 | the program. */ | |
4937 | update_signals_program_target (); | |
4938 | ||
d962ef82 DJ |
4939 | /* Next, if the target can specify a description, read it. We do |
4940 | this before anything involving memory or registers. */ | |
4941 | target_find_description (); | |
4942 | ||
6c95b8df PA |
4943 | /* Next, now that we know something about the target, update the |
4944 | address spaces in the program spaces. */ | |
4945 | update_address_spaces (); | |
4946 | ||
50c71eaf PA |
4947 | /* On OSs where the list of libraries is global to all |
4948 | processes, we fetch them early. */ | |
f5656ead | 4949 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4950 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4951 | |
6efcd9a8 | 4952 | if (target_is_non_stop_p ()) |
74531fed | 4953 | { |
ff52c073 | 4954 | if (m_features.packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4955 | error (_("Non-stop mode requested, but remote " |
4956 | "does not support non-stop")); | |
74531fed PA |
4957 | |
4958 | putpkt ("QNonStop:1"); | |
8d64371b | 4959 | getpkt (&rs->buf, 0); |
74531fed | 4960 | |
8d64371b TT |
4961 | if (strcmp (rs->buf.data (), "OK") != 0) |
4962 | error (_("Remote refused setting non-stop mode with: %s"), | |
4963 | rs->buf.data ()); | |
74531fed PA |
4964 | |
4965 | /* Find about threads and processes the stub is already | |
4966 | controlling. We default to adding them in the running state. | |
4967 | The '?' query below will then tell us about which threads are | |
4968 | stopped. */ | |
f6ac5f3d | 4969 | this->update_thread_list (); |
74531fed | 4970 | } |
ff52c073 | 4971 | else if (m_features.packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4972 | { |
4973 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4974 | Request it explicitly. */ |
74531fed | 4975 | putpkt ("QNonStop:0"); |
8d64371b | 4976 | getpkt (&rs->buf, 0); |
74531fed | 4977 | |
8d64371b TT |
4978 | if (strcmp (rs->buf.data (), "OK") != 0) |
4979 | error (_("Remote refused setting all-stop mode with: %s"), | |
4980 | rs->buf.data ()); | |
74531fed PA |
4981 | } |
4982 | ||
a0743c90 YQ |
4983 | /* Upload TSVs regardless of whether the target is running or not. The |
4984 | remote stub, such as GDBserver, may have some predefined or builtin | |
4985 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4986 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4987 | { |
4988 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4989 | ||
f6ac5f3d | 4990 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4991 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4992 | } | |
4993 | ||
2d717e4f DJ |
4994 | /* Check whether the target is running now. */ |
4995 | putpkt ("?"); | |
8d64371b | 4996 | getpkt (&rs->buf, 0); |
2d717e4f | 4997 | |
6efcd9a8 | 4998 | if (!target_is_non_stop_p ()) |
2d717e4f | 4999 | { |
b5c8f22d SM |
5000 | char *wait_status = NULL; |
5001 | ||
74531fed | 5002 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 5003 | { |
04bd08de | 5004 | if (!extended_p) |
74531fed | 5005 | error (_("The target is not running (try extended-remote?)")); |
288712bb | 5006 | return false; |
2d717e4f DJ |
5007 | } |
5008 | else | |
74531fed | 5009 | { |
74531fed | 5010 | /* Save the reply for later. */ |
8d64371b TT |
5011 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
5012 | strcpy (wait_status, rs->buf.data ()); | |
74531fed PA |
5013 | } |
5014 | ||
b7ea362b | 5015 | /* Fetch thread list. */ |
e8032dde | 5016 | target_update_thread_list (); |
b7ea362b | 5017 | |
74531fed PA |
5018 | /* Let the stub know that we want it to return the thread. */ |
5019 | set_continue_thread (minus_one_ptid); | |
5020 | ||
5b6d1e4f | 5021 | if (thread_count (this) == 0) |
b7ea362b PA |
5022 | { |
5023 | /* Target has no concept of threads at all. GDB treats | |
5024 | non-threaded target as single-threaded; add a main | |
5025 | thread. */ | |
64d38fdd JM |
5026 | thread_info *tp = add_current_inferior_and_thread (wait_status); |
5027 | get_remote_thread_info (tp)->set_resumed (); | |
b7ea362b PA |
5028 | } |
5029 | else | |
5030 | { | |
5031 | /* We have thread information; select the thread the target | |
5032 | says should be current. If we're reconnecting to a | |
5033 | multi-threaded program, this will ideally be the thread | |
5034 | that last reported an event before GDB disconnected. */ | |
75c6c844 PA |
5035 | ptid_t curr_thread = get_current_thread (wait_status); |
5036 | if (curr_thread == null_ptid) | |
b7ea362b PA |
5037 | { |
5038 | /* Odd... The target was able to list threads, but not | |
5039 | tell us which thread was current (no "thread" | |
5040 | register in T stop reply?). Just pick the first | |
5041 | thread in the thread list then. */ | |
2189c312 SM |
5042 | |
5043 | remote_debug_printf ("warning: couldn't determine remote " | |
5044 | "current thread; picking first in list."); | |
c9f35b34 | 5045 | |
5b6d1e4f PA |
5046 | for (thread_info *tp : all_non_exited_threads (this, |
5047 | minus_one_ptid)) | |
75c6c844 PA |
5048 | { |
5049 | switch_to_thread (tp); | |
5050 | break; | |
5051 | } | |
b7ea362b | 5052 | } |
75c6c844 | 5053 | else |
5b6d1e4f | 5054 | switch_to_thread (find_thread_ptid (this, curr_thread)); |
b7ea362b | 5055 | } |
74531fed | 5056 | |
6e586cc5 YQ |
5057 | /* init_wait_for_inferior should be called before get_offsets in order |
5058 | to manage `inserted' flag in bp loc in a correct state. | |
5059 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
5060 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
5061 | start_remote, set `inserted' flag to 1. In the initialization of | |
5062 | inferior, breakpoint_init_inferior should be called first, and then | |
5063 | breakpoint_re_set can be called. If this order is broken, state of | |
5064 | `inserted' flag is wrong, and cause some problems on breakpoint | |
5065 | manipulation. */ | |
5066 | init_wait_for_inferior (); | |
5067 | ||
74531fed PA |
5068 | get_offsets (); /* Get text, data & bss offsets. */ |
5069 | ||
d962ef82 DJ |
5070 | /* If we could not find a description using qXfer, and we know |
5071 | how to do it some other way, try again. This is not | |
5072 | supported for non-stop; it could be, but it is tricky if | |
5073 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 5074 | if (remote_read_description_p (this) |
f5656ead | 5075 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
5076 | { |
5077 | target_clear_description (); | |
5078 | target_find_description (); | |
5079 | } | |
5080 | ||
74531fed PA |
5081 | /* Use the previously fetched status. */ |
5082 | gdb_assert (wait_status != NULL); | |
4f626cad AB |
5083 | struct notif_event *reply |
5084 | = remote_notif_parse (this, ¬if_client_stop, wait_status); | |
5085 | push_stop_reply ((struct stop_reply *) reply); | |
74531fed | 5086 | |
f6ac5f3d | 5087 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
5088 | } |
5089 | else | |
5090 | { | |
68c97600 PA |
5091 | /* Clear WFI global state. Do this before finding about new |
5092 | threads and inferiors, and setting the current inferior. | |
5093 | Otherwise we would clear the proceed status of the current | |
5094 | inferior when we want its stop_soon state to be preserved | |
5095 | (see notice_new_inferior). */ | |
5096 | init_wait_for_inferior (); | |
5097 | ||
74531fed PA |
5098 | /* In non-stop, we will either get an "OK", meaning that there |
5099 | are no stopped threads at this time; or, a regular stop | |
5100 | reply. In the latter case, there may be more than one thread | |
5101 | stopped --- we pull them all out using the vStopped | |
5102 | mechanism. */ | |
8d64371b | 5103 | if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 5104 | { |
42938c1a | 5105 | const notif_client *notif = ¬if_client_stop; |
2d717e4f | 5106 | |
722247f1 YQ |
5107 | /* remote_notif_get_pending_replies acks this one, and gets |
5108 | the rest out. */ | |
f48ff2a7 | 5109 | rs->notif_state->pending_event[notif_client_stop.id] |
8d64371b | 5110 | = remote_notif_parse (this, notif, rs->buf.data ()); |
722247f1 | 5111 | remote_notif_get_pending_events (notif); |
74531fed | 5112 | } |
2d717e4f | 5113 | |
5b6d1e4f | 5114 | if (thread_count (this) == 0) |
74531fed | 5115 | { |
04bd08de | 5116 | if (!extended_p) |
74531fed | 5117 | error (_("The target is not running (try extended-remote?)")); |
288712bb | 5118 | return false; |
c35b1492 | 5119 | } |
74531fed | 5120 | |
2455069d | 5121 | /* Report all signals during attach/startup. */ |
adc6a863 | 5122 | pass_signals ({}); |
221e1a37 PA |
5123 | |
5124 | /* If there are already stopped threads, mark them stopped and | |
5125 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 5126 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
5127 | |
5128 | if (target_can_async_p ()) | |
4a570176 | 5129 | target_async (true); |
74531fed | 5130 | } |
c8d104ad | 5131 | |
901e4e8d SM |
5132 | /* Give the target a chance to look up symbols. */ |
5133 | for (inferior *inf : all_inferiors (this)) | |
c8d104ad | 5134 | { |
901e4e8d SM |
5135 | /* The inferiors that exist at this point were created from what |
5136 | was found already running on the remote side, so we know they | |
5137 | have execution. */ | |
5138 | gdb_assert (this->has_execution (inf)); | |
5139 | ||
a42d7dd8 | 5140 | /* No use without a symbol-file. */ |
901e4e8d SM |
5141 | if (inf->pspace->symfile_object_file == nullptr) |
5142 | continue; | |
5143 | ||
5144 | /* Need to switch to a specific thread, because remote_check_symbols | |
5145 | uses INFERIOR_PTID to set the general thread. */ | |
5146 | scoped_restore_current_thread restore_thread; | |
5147 | thread_info *thread = any_thread_of_inferior (inf); | |
5148 | switch_to_thread (thread); | |
5149 | this->remote_check_symbols (); | |
c8d104ad | 5150 | } |
50c71eaf | 5151 | |
d5551862 SS |
5152 | /* Possibly the target has been engaged in a trace run started |
5153 | previously; find out where things are at. */ | |
f6ac5f3d | 5154 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 5155 | { |
00bf0b85 | 5156 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 5157 | |
00bf0b85 | 5158 | if (current_trace_status ()->running) |
6cb06a8c | 5159 | gdb_printf (_("Trace is already running on the target.\n")); |
00bf0b85 | 5160 | |
f6ac5f3d | 5161 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
5162 | |
5163 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
5164 | } |
5165 | ||
c0272db5 TW |
5166 | /* Possibly the target has been engaged in a btrace record started |
5167 | previously; find out where things are at. */ | |
5168 | remote_btrace_maybe_reopen (); | |
5169 | ||
288712bb AB |
5170 | return true; |
5171 | } | |
5172 | ||
5173 | /* Start the remote connection and sync state. */ | |
1e51243a | 5174 | |
288712bb AB |
5175 | void |
5176 | remote_target::start_remote (int from_tty, int extended_p) | |
5177 | { | |
5178 | if (start_remote_1 (from_tty, extended_p) | |
5179 | && breakpoints_should_be_inserted_now ()) | |
50c71eaf | 5180 | insert_breakpoints (); |
c906108c SS |
5181 | } |
5182 | ||
121b3efd PA |
5183 | const char * |
5184 | remote_target::connection_string () | |
5185 | { | |
5186 | remote_state *rs = get_remote_state (); | |
5187 | ||
5188 | if (rs->remote_desc->name != NULL) | |
5189 | return rs->remote_desc->name; | |
5190 | else | |
5191 | return NULL; | |
5192 | } | |
5193 | ||
c906108c SS |
5194 | /* Open a connection to a remote debugger. |
5195 | NAME is the filename used for communication. */ | |
5196 | ||
f6ac5f3d PA |
5197 | void |
5198 | remote_target::open (const char *name, int from_tty) | |
c906108c | 5199 | { |
f6ac5f3d | 5200 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
5201 | } |
5202 | ||
c906108c SS |
5203 | /* Open a connection to a remote debugger using the extended |
5204 | remote gdb protocol. NAME is the filename used for communication. */ | |
5205 | ||
f6ac5f3d PA |
5206 | void |
5207 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 5208 | { |
f6ac5f3d | 5209 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
5210 | } |
5211 | ||
ff52c073 CS |
5212 | void |
5213 | remote_features::reset_all_packet_configs_support () | |
d471ea57 AC |
5214 | { |
5215 | int i; | |
a744cf53 | 5216 | |
444abaca | 5217 | for (i = 0; i < PACKET_MAX; i++) |
ff52c073 | 5218 | m_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
5219 | } |
5220 | ||
ca4f7f8b PA |
5221 | /* Initialize all packet configs. */ |
5222 | ||
5223 | static void | |
5224 | init_all_packet_configs (void) | |
5225 | { | |
5226 | int i; | |
5227 | ||
5228 | for (i = 0; i < PACKET_MAX; i++) | |
5229 | { | |
5230 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
5231 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
5232 | } | |
5233 | } | |
5234 | ||
23860348 | 5235 | /* Symbol look-up. */ |
dc8acb97 | 5236 | |
6b8edb51 PA |
5237 | void |
5238 | remote_target::remote_check_symbols () | |
dc8acb97 | 5239 | { |
8d64371b | 5240 | char *tmp; |
dc8acb97 MS |
5241 | int end; |
5242 | ||
06c7226e SM |
5243 | /* It doesn't make sense to send a qSymbol packet for an inferior that |
5244 | doesn't have execution, because the remote side doesn't know about | |
5245 | inferiors without execution. */ | |
5246 | gdb_assert (target_has_execution ()); | |
63154eca | 5247 | |
ff52c073 | 5248 | if (m_features.packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
5249 | return; |
5250 | ||
63154eca PA |
5251 | /* Make sure the remote is pointing at the right process. Note |
5252 | there's no way to select "no process". */ | |
3c9c4b83 PA |
5253 | set_general_process (); |
5254 | ||
6d820c5c DJ |
5255 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
5256 | because we need both at the same time. */ | |
66644cd3 | 5257 | gdb::char_vector msg (get_remote_packet_size ()); |
8d64371b | 5258 | gdb::char_vector reply (get_remote_packet_size ()); |
6d820c5c | 5259 | |
23860348 | 5260 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
5261 | |
5262 | putpkt ("qSymbol::"); | |
8d64371b | 5263 | getpkt (&reply, 0); |
ff52c073 | 5264 | m_features.packet_ok (reply, PACKET_qSymbol); |
dc8acb97 | 5265 | |
8d64371b | 5266 | while (startswith (reply.data (), "qSymbol:")) |
dc8acb97 | 5267 | { |
77e371c0 TT |
5268 | struct bound_minimal_symbol sym; |
5269 | ||
dc8acb97 | 5270 | tmp = &reply[8]; |
66644cd3 AB |
5271 | end = hex2bin (tmp, reinterpret_cast <gdb_byte *> (msg.data ()), |
5272 | strlen (tmp) / 2); | |
dc8acb97 | 5273 | msg[end] = '\0'; |
66644cd3 | 5274 | sym = lookup_minimal_symbol (msg.data (), NULL, NULL); |
3b7344d5 | 5275 | if (sym.minsym == NULL) |
66644cd3 AB |
5276 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol::%s", |
5277 | &reply[8]); | |
dc8acb97 | 5278 | else |
2bbe3cc1 | 5279 | { |
f5656ead | 5280 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
4aeddc50 | 5281 | CORE_ADDR sym_addr = sym.value_address (); |
2bbe3cc1 DJ |
5282 | |
5283 | /* If this is a function address, return the start of code | |
5284 | instead of any data function descriptor. */ | |
328d42d8 SM |
5285 | sym_addr = gdbarch_convert_from_func_ptr_addr |
5286 | (target_gdbarch (), sym_addr, current_inferior ()->top_target ()); | |
2bbe3cc1 | 5287 | |
66644cd3 | 5288 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol:%s:%s", |
5af949e3 | 5289 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 | 5290 | } |
66644cd3 AB |
5291 | |
5292 | putpkt (msg.data ()); | |
8d64371b | 5293 | getpkt (&reply, 0); |
dc8acb97 MS |
5294 | } |
5295 | } | |
5296 | ||
9db8d71f | 5297 | static struct serial * |
baa336ce | 5298 | remote_serial_open (const char *name) |
9db8d71f DJ |
5299 | { |
5300 | static int udp_warning = 0; | |
5301 | ||
5302 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
5303 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
5304 | serial connection is reliable and not the serial connection promising | |
5305 | to be. */ | |
61012eef | 5306 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 5307 | { |
3e43a32a MS |
5308 | warning (_("The remote protocol may be unreliable over UDP.\n" |
5309 | "Some events may be lost, rendering further debugging " | |
5310 | "impossible.")); | |
9db8d71f DJ |
5311 | udp_warning = 1; |
5312 | } | |
5313 | ||
5314 | return serial_open (name); | |
5315 | } | |
5316 | ||
d914c394 SS |
5317 | /* Inform the target of our permission settings. The permission flags |
5318 | work without this, but if the target knows the settings, it can do | |
5319 | a couple things. First, it can add its own check, to catch cases | |
5320 | that somehow manage to get by the permissions checks in target | |
5321 | methods. Second, if the target is wired to disallow particular | |
5322 | settings (for instance, a system in the field that is not set up to | |
5323 | be able to stop at a breakpoint), it can object to any unavailable | |
5324 | permissions. */ | |
5325 | ||
5326 | void | |
f6ac5f3d | 5327 | remote_target::set_permissions () |
d914c394 SS |
5328 | { |
5329 | struct remote_state *rs = get_remote_state (); | |
5330 | ||
8d64371b | 5331 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAllow:" |
bba74b36 YQ |
5332 | "WriteReg:%x;WriteMem:%x;" |
5333 | "InsertBreak:%x;InsertTrace:%x;" | |
5334 | "InsertFastTrace:%x;Stop:%x", | |
5335 | may_write_registers, may_write_memory, | |
5336 | may_insert_breakpoints, may_insert_tracepoints, | |
5337 | may_insert_fast_tracepoints, may_stop); | |
d914c394 | 5338 | putpkt (rs->buf); |
8d64371b | 5339 | getpkt (&rs->buf, 0); |
d914c394 SS |
5340 | |
5341 | /* If the target didn't like the packet, warn the user. Do not try | |
5342 | to undo the user's settings, that would just be maddening. */ | |
8d64371b TT |
5343 | if (strcmp (rs->buf.data (), "OK") != 0) |
5344 | warning (_("Remote refused setting permissions with: %s"), | |
5345 | rs->buf.data ()); | |
d914c394 SS |
5346 | } |
5347 | ||
be2a5f71 DJ |
5348 | /* This type describes each known response to the qSupported |
5349 | packet. */ | |
5350 | struct protocol_feature | |
5351 | { | |
5352 | /* The name of this protocol feature. */ | |
5353 | const char *name; | |
5354 | ||
5355 | /* The default for this protocol feature. */ | |
5356 | enum packet_support default_support; | |
5357 | ||
5358 | /* The function to call when this feature is reported, or after | |
5359 | qSupported processing if the feature is not supported. | |
5360 | The first argument points to this structure. The second | |
5361 | argument indicates whether the packet requested support be | |
5362 | enabled, disabled, or probed (or the default, if this function | |
5363 | is being called at the end of processing and this feature was | |
5364 | not reported). The third argument may be NULL; if not NULL, it | |
5365 | is a NUL-terminated string taken from the packet following | |
5366 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5367 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5368 | enum packet_support, const char *); | |
be2a5f71 DJ |
5369 | |
5370 | /* The corresponding packet for this feature. Only used if | |
5371 | FUNC is remote_supported_packet. */ | |
5372 | int packet; | |
5373 | }; | |
5374 | ||
be2a5f71 | 5375 | static void |
6b8edb51 PA |
5376 | remote_supported_packet (remote_target *remote, |
5377 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5378 | enum packet_support support, |
5379 | const char *argument) | |
5380 | { | |
5381 | if (argument) | |
5382 | { | |
5383 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5384 | " \"%s\"."), feature->name); | |
5385 | return; | |
5386 | } | |
5387 | ||
ff52c073 | 5388 | remote->m_features.m_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5389 | } |
be2a5f71 | 5390 | |
6b8edb51 PA |
5391 | void |
5392 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5393 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5394 | { |
5395 | struct remote_state *rs = get_remote_state (); | |
5396 | ||
5397 | int packet_size; | |
5398 | char *value_end; | |
5399 | ||
5400 | if (support != PACKET_ENABLE) | |
5401 | return; | |
5402 | ||
5403 | if (value == NULL || *value == '\0') | |
5404 | { | |
5405 | warning (_("Remote target reported \"%s\" without a size."), | |
5406 | feature->name); | |
5407 | return; | |
5408 | } | |
5409 | ||
5410 | errno = 0; | |
5411 | packet_size = strtol (value, &value_end, 16); | |
5412 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5413 | { | |
5414 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5415 | feature->name, value); | |
5416 | return; | |
5417 | } | |
5418 | ||
be2a5f71 DJ |
5419 | /* Record the new maximum packet size. */ |
5420 | rs->explicit_packet_size = packet_size; | |
5421 | } | |
5422 | ||
cb8c24b6 | 5423 | static void |
6b8edb51 PA |
5424 | remote_packet_size (remote_target *remote, const protocol_feature *feature, |
5425 | enum packet_support support, const char *value) | |
5426 | { | |
5427 | remote->remote_packet_size (feature, support, value); | |
5428 | } | |
5429 | ||
dc473cfb | 5430 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5431 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5432 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5433 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5434 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5435 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5436 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5437 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5438 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5439 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5440 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5441 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5442 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5443 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5444 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5445 | PACKET_qXfer_memory_map }, |
07e059b5 VP |
5446 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5447 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5448 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5449 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5450 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5451 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5452 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5453 | PACKET_QPassSignals }, | |
82075af2 JS |
5454 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5455 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5456 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5457 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5458 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5459 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5460 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5461 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5462 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5463 | PACKET_QEnvironmentHexEncoded }, | |
5464 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5465 | PACKET_QEnvironmentReset }, | |
5466 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5467 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5468 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5469 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5470 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5471 | PACKET_multiprocess_feature }, | |
5472 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5473 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5474 | PACKET_qXfer_siginfo_read }, | |
5475 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5476 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5477 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5478 | PACKET_ConditionalTracepoints }, |
4082afcc | 5479 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5480 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5481 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5482 | PACKET_BreakpointCommands }, |
4082afcc | 5483 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5484 | PACKET_FastTracepoints }, |
4082afcc | 5485 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5486 | PACKET_StaticTracepoints }, |
4082afcc | 5487 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5488 | PACKET_InstallInTrace}, |
4082afcc PA |
5489 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5490 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5491 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5492 | PACKET_bc }, | |
5493 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5494 | PACKET_bs }, | |
409873ef SS |
5495 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5496 | PACKET_TracepointSource }, | |
d914c394 SS |
5497 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5498 | PACKET_QAllow }, | |
4082afcc PA |
5499 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5500 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5501 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5502 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5503 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5504 | PACKET_qXfer_uib }, | |
03583c20 UW |
5505 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5506 | PACKET_QDisableRandomization }, | |
d1feda86 | 5507 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5508 | { "QTBuffer:size", PACKET_DISABLE, |
5509 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5510 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5511 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5512 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5513 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5514 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5515 | PACKET_qXfer_btrace }, |
5516 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5517 | PACKET_qXfer_btrace_conf }, |
5518 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5519 | PACKET_Qbtrace_conf_bts_size }, |
5520 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5521 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5522 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5523 | PACKET_fork_event_feature }, | |
5524 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5525 | PACKET_vfork_event_feature }, | |
94585166 DB |
5526 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5527 | PACKET_exec_event_feature }, | |
b20a6524 | 5528 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5529 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5530 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5531 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5532 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
2c2e7f87 LM |
5533 | { "memory-tagging", PACKET_DISABLE, remote_supported_packet, |
5534 | PACKET_memory_tagging_feature }, | |
be2a5f71 DJ |
5535 | }; |
5536 | ||
c8d5aac9 L |
5537 | static char *remote_support_xml; |
5538 | ||
5539 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5540 | ||
5541 | void | |
6e39997a | 5542 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5543 | { |
5544 | #if defined(HAVE_LIBEXPAT) | |
5545 | if (remote_support_xml == NULL) | |
c4f7c687 | 5546 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5547 | else |
5548 | { | |
5549 | char *copy = xstrdup (remote_support_xml + 13); | |
ca3a04f6 CB |
5550 | char *saveptr; |
5551 | char *p = strtok_r (copy, ",", &saveptr); | |
c8d5aac9 L |
5552 | |
5553 | do | |
5554 | { | |
5555 | if (strcmp (p, xml) == 0) | |
5556 | { | |
5557 | /* already there */ | |
5558 | xfree (copy); | |
5559 | return; | |
5560 | } | |
5561 | } | |
ca3a04f6 | 5562 | while ((p = strtok_r (NULL, ",", &saveptr)) != NULL); |
c8d5aac9 L |
5563 | xfree (copy); |
5564 | ||
94b0dee1 PA |
5565 | remote_support_xml = reconcat (remote_support_xml, |
5566 | remote_support_xml, ",", xml, | |
5567 | (char *) NULL); | |
c8d5aac9 L |
5568 | } |
5569 | #endif | |
5570 | } | |
5571 | ||
69b6ecb0 TT |
5572 | static void |
5573 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5574 | { |
69b6ecb0 TT |
5575 | if (!msg->empty ()) |
5576 | msg->append (";"); | |
5577 | msg->append (append); | |
c8d5aac9 L |
5578 | } |
5579 | ||
6b8edb51 PA |
5580 | void |
5581 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5582 | { |
5583 | struct remote_state *rs = get_remote_state (); | |
5584 | char *next; | |
5585 | int i; | |
5586 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5587 | ||
5588 | /* The packet support flags are handled differently for this packet | |
5589 | than for most others. We treat an error, a disabled packet, and | |
5590 | an empty response identically: any features which must be reported | |
5591 | to be used will be automatically disabled. An empty buffer | |
5592 | accomplishes this, since that is also the representation for a list | |
5593 | containing no features. */ | |
5594 | ||
5595 | rs->buf[0] = 0; | |
ff52c073 | 5596 | if (m_features.packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5597 | { |
69b6ecb0 | 5598 | std::string q; |
c8d5aac9 | 5599 | |
ff52c073 CS |
5600 | if (m_features.packet_set_cmd_state (PACKET_multiprocess_feature) |
5601 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5602 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5603 | |
ff52c073 CS |
5604 | if (m_features.packet_set_cmd_state (PACKET_swbreak_feature) |
5605 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5606 | remote_query_supported_append (&q, "swbreak+"); |
ff52c073 CS |
5607 | |
5608 | if (m_features.packet_set_cmd_state (PACKET_hwbreak_feature) | |
5609 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5610 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5611 | |
69b6ecb0 | 5612 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5613 | |
ff52c073 | 5614 | if (m_features.packet_set_cmd_state (PACKET_fork_event_feature) |
8020350c | 5615 | != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5616 | remote_query_supported_append (&q, "fork-events+"); |
ff52c073 CS |
5617 | |
5618 | if (m_features.packet_set_cmd_state (PACKET_vfork_event_feature) | |
8020350c | 5619 | != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5620 | remote_query_supported_append (&q, "vfork-events+"); |
ff52c073 CS |
5621 | |
5622 | if (m_features.packet_set_cmd_state (PACKET_exec_event_feature) | |
8020350c | 5623 | != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5624 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5625 | |
ff52c073 CS |
5626 | if (m_features.packet_set_cmd_state (PACKET_vContSupported) |
5627 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5628 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5629 | |
ff52c073 CS |
5630 | if (m_features.packet_set_cmd_state (PACKET_QThreadEvents) |
5631 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5632 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5633 | |
ff52c073 CS |
5634 | if (m_features.packet_set_cmd_state (PACKET_no_resumed) |
5635 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5636 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5637 | |
ff52c073 | 5638 | if (m_features.packet_set_cmd_state (PACKET_memory_tagging_feature) |
2c2e7f87 LM |
5639 | != AUTO_BOOLEAN_FALSE) |
5640 | remote_query_supported_append (&q, "memory-tagging+"); | |
5641 | ||
b35d5edb PA |
5642 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5643 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de | 5644 | if (remote_support_xml != NULL |
ff52c073 CS |
5645 | && (m_features.packet_support (PACKET_qXfer_features) |
5646 | != PACKET_DISABLE)) | |
69b6ecb0 | 5647 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5648 | |
69b6ecb0 TT |
5649 | q = "qSupported:" + q; |
5650 | putpkt (q.c_str ()); | |
94b0dee1 | 5651 | |
8d64371b | 5652 | getpkt (&rs->buf, 0); |
be2a5f71 DJ |
5653 | |
5654 | /* If an error occured, warn, but do not return - just reset the | |
5655 | buffer to empty and go on to disable features. */ | |
ff52c073 | 5656 | if (m_features.packet_ok (rs->buf, PACKET_qSupported) == PACKET_ERROR) |
be2a5f71 | 5657 | { |
8d64371b | 5658 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
be2a5f71 DJ |
5659 | rs->buf[0] = 0; |
5660 | } | |
5661 | } | |
5662 | ||
5663 | memset (seen, 0, sizeof (seen)); | |
5664 | ||
8d64371b | 5665 | next = rs->buf.data (); |
be2a5f71 DJ |
5666 | while (*next) |
5667 | { | |
5668 | enum packet_support is_supported; | |
5669 | char *p, *end, *name_end, *value; | |
5670 | ||
5671 | /* First separate out this item from the rest of the packet. If | |
5672 | there's another item after this, we overwrite the separator | |
5673 | (terminated strings are much easier to work with). */ | |
5674 | p = next; | |
5675 | end = strchr (p, ';'); | |
5676 | if (end == NULL) | |
5677 | { | |
5678 | end = p + strlen (p); | |
5679 | next = end; | |
5680 | } | |
5681 | else | |
5682 | { | |
89be2091 DJ |
5683 | *end = '\0'; |
5684 | next = end + 1; | |
5685 | ||
be2a5f71 DJ |
5686 | if (end == p) |
5687 | { | |
5688 | warning (_("empty item in \"qSupported\" response")); | |
5689 | continue; | |
5690 | } | |
be2a5f71 DJ |
5691 | } |
5692 | ||
5693 | name_end = strchr (p, '='); | |
5694 | if (name_end) | |
5695 | { | |
5696 | /* This is a name=value entry. */ | |
5697 | is_supported = PACKET_ENABLE; | |
5698 | value = name_end + 1; | |
5699 | *name_end = '\0'; | |
5700 | } | |
5701 | else | |
5702 | { | |
5703 | value = NULL; | |
5704 | switch (end[-1]) | |
5705 | { | |
5706 | case '+': | |
5707 | is_supported = PACKET_ENABLE; | |
5708 | break; | |
5709 | ||
5710 | case '-': | |
5711 | is_supported = PACKET_DISABLE; | |
5712 | break; | |
5713 | ||
5714 | case '?': | |
5715 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5716 | break; | |
5717 | ||
5718 | default: | |
3e43a32a MS |
5719 | warning (_("unrecognized item \"%s\" " |
5720 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5721 | continue; |
5722 | } | |
5723 | end[-1] = '\0'; | |
5724 | } | |
5725 | ||
5726 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5727 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5728 | { | |
5729 | const struct protocol_feature *feature; | |
5730 | ||
5731 | seen[i] = 1; | |
5732 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5733 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5734 | break; |
5735 | } | |
5736 | } | |
5737 | ||
5738 | /* If we increased the packet size, make sure to increase the global | |
5739 | buffer size also. We delay this until after parsing the entire | |
5740 | qSupported packet, because this is the same buffer we were | |
5741 | parsing. */ | |
8d64371b TT |
5742 | if (rs->buf.size () < rs->explicit_packet_size) |
5743 | rs->buf.resize (rs->explicit_packet_size); | |
be2a5f71 DJ |
5744 | |
5745 | /* Handle the defaults for unmentioned features. */ | |
5746 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5747 | if (!seen[i]) | |
5748 | { | |
5749 | const struct protocol_feature *feature; | |
5750 | ||
5751 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5752 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5753 | } |
5754 | } | |
5755 | ||
048094ac PA |
5756 | /* Serial QUIT handler for the remote serial descriptor. |
5757 | ||
5758 | Defers handling a Ctrl-C until we're done with the current | |
5759 | command/response packet sequence, unless: | |
5760 | ||
5761 | - We're setting up the connection. Don't send a remote interrupt | |
5762 | request, as we're not fully synced yet. Quit immediately | |
5763 | instead. | |
5764 | ||
5765 | - The target has been resumed in the foreground | |
223ffa71 | 5766 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5767 | packet, and we're blocked waiting for the stop reply, thus a |
5768 | Ctrl-C should be immediately sent to the target. | |
5769 | ||
5770 | - We get a second Ctrl-C while still within the same serial read or | |
5771 | write. In that case the serial is seemingly wedged --- offer to | |
5772 | quit/disconnect. | |
5773 | ||
5774 | - We see a second Ctrl-C without target response, after having | |
5775 | previously interrupted the target. In that case the target/stub | |
5776 | is probably wedged --- offer to quit/disconnect. | |
5777 | */ | |
5778 | ||
6b8edb51 PA |
5779 | void |
5780 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5781 | { |
5782 | struct remote_state *rs = get_remote_state (); | |
5783 | ||
5784 | if (check_quit_flag ()) | |
5785 | { | |
5786 | /* If we're starting up, we're not fully synced yet. Quit | |
5787 | immediately. */ | |
5788 | if (rs->starting_up) | |
5789 | quit (); | |
5790 | else if (rs->got_ctrlc_during_io) | |
5791 | { | |
5792 | if (query (_("The target is not responding to GDB commands.\n" | |
5793 | "Stop debugging it? "))) | |
5b6d1e4f | 5794 | remote_unpush_and_throw (this); |
048094ac PA |
5795 | } |
5796 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5797 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5798 | interrupt_query (); |
5799 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5800 | an interrupt request. */ | |
223ffa71 | 5801 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5802 | target_interrupt (); |
048094ac PA |
5803 | else |
5804 | rs->got_ctrlc_during_io = 1; | |
5805 | } | |
5806 | } | |
5807 | ||
6b8edb51 PA |
5808 | /* The remote_target that is current while the quit handler is |
5809 | overridden with remote_serial_quit_handler. */ | |
5810 | static remote_target *curr_quit_handler_target; | |
5811 | ||
5812 | static void | |
5813 | remote_serial_quit_handler () | |
5814 | { | |
5815 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5816 | } | |
5817 | ||
5b6d1e4f PA |
5818 | /* Remove the remote target from the target stack of each inferior |
5819 | that is using it. Upper targets depend on it so remove them | |
5820 | first. */ | |
78a095c3 JK |
5821 | |
5822 | static void | |
5b6d1e4f | 5823 | remote_unpush_target (remote_target *target) |
78a095c3 | 5824 | { |
5b6d1e4f PA |
5825 | /* We have to unpush the target from all inferiors, even those that |
5826 | aren't running. */ | |
5827 | scoped_restore_current_inferior restore_current_inferior; | |
5828 | ||
5829 | for (inferior *inf : all_inferiors (target)) | |
5830 | { | |
5831 | switch_to_inferior_no_thread (inf); | |
c8181f70 | 5832 | inf->pop_all_targets_at_and_above (process_stratum); |
5b6d1e4f PA |
5833 | generic_mourn_inferior (); |
5834 | } | |
d7cb0ef3 PA |
5835 | |
5836 | /* Don't rely on target_close doing this when the target is popped | |
5837 | from the last remote inferior above, because something may be | |
5838 | holding a reference to the target higher up on the stack, meaning | |
5839 | target_close won't be called yet. We lost the connection to the | |
5840 | target, so clear these now, otherwise we may later throw | |
5841 | TARGET_CLOSE_ERROR while trying to tell the remote target to | |
5842 | close the file. */ | |
5843 | fileio_handles_invalidate_target (target); | |
78a095c3 | 5844 | } |
be2a5f71 | 5845 | |
048094ac | 5846 | static void |
5b6d1e4f | 5847 | remote_unpush_and_throw (remote_target *target) |
048094ac | 5848 | { |
5b6d1e4f | 5849 | remote_unpush_target (target); |
048094ac PA |
5850 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
5851 | } | |
5852 | ||
f6ac5f3d PA |
5853 | void |
5854 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5855 | { |
6b8edb51 | 5856 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5857 | |
c906108c | 5858 | if (name == 0) |
8a3fe4f8 | 5859 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5860 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5861 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5862 | |
2d717e4f | 5863 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5864 | Ask this question first, before target_preopen has a chance to kill |
5865 | anything. */ | |
55f6301a | 5866 | if (curr_remote != NULL && !target_has_execution ()) |
2d717e4f | 5867 | { |
78a095c3 JK |
5868 | if (from_tty |
5869 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5870 | error (_("Still connected.")); |
5871 | } | |
5872 | ||
78a095c3 | 5873 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5874 | target_preopen (from_tty); |
5875 | ||
ad9a8f3f | 5876 | remote_fileio_reset (); |
1dd41f16 | 5877 | reopen_exec_file (); |
9dec38d3 | 5878 | reread_symbols (from_tty); |
1dd41f16 | 5879 | |
6b8edb51 PA |
5880 | remote_target *remote |
5881 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5882 | target_ops_up target_holder (remote); | |
5883 | ||
5884 | remote_state *rs = remote->get_remote_state (); | |
5885 | ||
5886 | /* See FIXME above. */ | |
5887 | if (!target_async_permitted) | |
5888 | rs->wait_forever_enabled_p = 1; | |
5889 | ||
5d93a237 TT |
5890 | rs->remote_desc = remote_serial_open (name); |
5891 | if (!rs->remote_desc) | |
c906108c SS |
5892 | perror_with_name (name); |
5893 | ||
5894 | if (baud_rate != -1) | |
5895 | { | |
5d93a237 | 5896 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5897 | { |
9b74d5d3 KB |
5898 | /* The requested speed could not be set. Error out to |
5899 | top level after closing remote_desc. Take care to | |
5900 | set remote_desc to NULL to avoid closing remote_desc | |
5901 | more than once. */ | |
5d93a237 TT |
5902 | serial_close (rs->remote_desc); |
5903 | rs->remote_desc = NULL; | |
c906108c SS |
5904 | perror_with_name (name); |
5905 | } | |
5906 | } | |
5907 | ||
236af5e3 | 5908 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5909 | serial_raw (rs->remote_desc); |
c906108c SS |
5910 | |
5911 | /* If there is something sitting in the buffer we might take it as a | |
5912 | response to a command, which would be bad. */ | |
5d93a237 | 5913 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5914 | |
5915 | if (from_tty) | |
5916 | { | |
0426ad51 TT |
5917 | gdb_puts ("Remote debugging using "); |
5918 | gdb_puts (name); | |
5919 | gdb_puts ("\n"); | |
c906108c | 5920 | } |
d9f719f1 | 5921 | |
6b8edb51 | 5922 | /* Switch to using the remote target now. */ |
02980c56 | 5923 | current_inferior ()->push_target (std::move (target_holder)); |
c906108c | 5924 | |
74531fed | 5925 | /* Register extra event sources in the event loop. */ |
6b8edb51 | 5926 | rs->remote_async_inferior_event_token |
baa8575b | 5927 | = create_async_event_handler (remote_async_inferior_event_handler, nullptr, |
db20ebdf | 5928 | "remote"); |
6b8edb51 | 5929 | rs->notif_state = remote_notif_state_allocate (remote); |
74531fed | 5930 | |
be2a5f71 DJ |
5931 | /* Reset the target state; these things will be queried either by |
5932 | remote_query_supported or as they are needed. */ | |
ff52c073 | 5933 | remote->m_features.reset_all_packet_configs_support (); |
be2a5f71 | 5934 | rs->explicit_packet_size = 0; |
a6f3e723 | 5935 | rs->noack_mode = 0; |
82f73884 | 5936 | rs->extended = extended_p; |
e24a49d8 | 5937 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5938 | rs->ctrlc_pending_p = 0; |
048094ac | 5939 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5940 | |
47f8a51d TT |
5941 | rs->general_thread = not_sent_ptid; |
5942 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5943 | rs->remote_traceframe_number = -1; |
c906108c | 5944 | |
3a00c802 PA |
5945 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5946 | ||
9d1f7ab2 | 5947 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5948 | rs->use_threadinfo_query = 1; |
5949 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5950 | |
dd194f6b | 5951 | rs->readahead_cache.invalidate (); |
80152258 | 5952 | |
c6ebd6cf | 5953 | if (target_async_permitted) |
92d1e331 | 5954 | { |
92d1e331 DJ |
5955 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5956 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5957 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5958 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5959 | around this. Eventually a mechanism that allows |
92d1e331 | 5960 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5961 | implemented. */ |
6b8edb51 | 5962 | rs->wait_forever_enabled_p = 0; |
92d1e331 DJ |
5963 | } |
5964 | ||
23860348 | 5965 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5966 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5967 | |
36918e70 | 5968 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5969 | target (we'd otherwise be in an inconsistent state) and then |
5970 | propogate the error on up the exception chain. This ensures that | |
5971 | the caller doesn't stumble along blindly assuming that the | |
5972 | function succeeded. The CLI doesn't have this problem but other | |
5973 | UI's, such as MI do. | |
36918e70 AC |
5974 | |
5975 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5976 | this function should return an error indication letting the | |
ce2826aa | 5977 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5978 | ``target remote'' is directly wired to this function making that |
5979 | impossible. On a positive note, the CLI side of this problem has | |
5980 | been fixed - the function set_cmd_context() makes it possible for | |
5981 | all the ``target ....'' commands to share a common callback | |
5982 | function. See cli-dump.c. */ | |
109c3e39 | 5983 | { |
2d717e4f | 5984 | |
a70b8144 | 5985 | try |
04bd08de | 5986 | { |
6b8edb51 | 5987 | remote->start_remote (from_tty, extended_p); |
04bd08de | 5988 | } |
230d2906 | 5989 | catch (const gdb_exception &ex) |
109c3e39 | 5990 | { |
c8d104ad PA |
5991 | /* Pop the partially set up target - unless something else did |
5992 | already before throwing the exception. */ | |
6b8edb51 | 5993 | if (ex.error != TARGET_CLOSE_ERROR) |
5b6d1e4f | 5994 | remote_unpush_target (remote); |
eedc3f4f | 5995 | throw; |
109c3e39 AC |
5996 | } |
5997 | } | |
c906108c | 5998 | |
6b8edb51 | 5999 | remote_btrace_reset (rs); |
f4abbc16 | 6000 | |
c6ebd6cf | 6001 | if (target_async_permitted) |
6b8edb51 | 6002 | rs->wait_forever_enabled_p = 1; |
43ff13b4 JM |
6003 | } |
6004 | ||
28561a65 | 6005 | /* Determine if WS represents a fork status. */ |
a4543480 | 6006 | |
28561a65 SM |
6007 | static bool |
6008 | is_fork_status (target_waitkind kind) | |
a4543480 | 6009 | { |
28561a65 SM |
6010 | return (kind == TARGET_WAITKIND_FORKED |
6011 | || kind == TARGET_WAITKIND_VFORKED); | |
a4543480 SM |
6012 | } |
6013 | ||
28561a65 SM |
6014 | /* Return THREAD's pending status if it is a pending fork parent, else |
6015 | return nullptr. */ | |
a4543480 | 6016 | |
28561a65 | 6017 | static const target_waitstatus * |
a4543480 SM |
6018 | thread_pending_fork_status (struct thread_info *thread) |
6019 | { | |
28561a65 SM |
6020 | const target_waitstatus &ws |
6021 | = (thread->has_pending_waitstatus () | |
6022 | ? thread->pending_waitstatus () | |
6023 | : thread->pending_follow); | |
a4543480 | 6024 | |
28561a65 SM |
6025 | if (!is_fork_status (ws.kind ())) |
6026 | return nullptr; | |
a4543480 | 6027 | |
28561a65 | 6028 | return &ws; |
a4543480 SM |
6029 | } |
6030 | ||
de0d863e DB |
6031 | /* Detach the specified process. */ |
6032 | ||
6b8edb51 PA |
6033 | void |
6034 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
6035 | { |
6036 | struct remote_state *rs = get_remote_state (); | |
6037 | ||
4c7333b3 PA |
6038 | /* This should not be necessary, but the handling for D;PID in |
6039 | GDBserver versions prior to 8.2 incorrectly assumes that the | |
6040 | selected process points to the same process we're detaching, | |
6041 | leading to misbehavior (and possibly GDBserver crashing) when it | |
6042 | does not. Since it's easy and cheap, work around it by forcing | |
6043 | GDBserver to select GDB's current process. */ | |
6044 | set_general_process (); | |
6045 | ||
ff52c073 | 6046 | if (m_features.remote_multi_process_p ()) |
8d64371b | 6047 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "D;%x", pid); |
de0d863e | 6048 | else |
8d64371b | 6049 | strcpy (rs->buf.data (), "D"); |
de0d863e DB |
6050 | |
6051 | putpkt (rs->buf); | |
8d64371b | 6052 | getpkt (&rs->buf, 0); |
de0d863e DB |
6053 | |
6054 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
6055 | ; | |
6056 | else if (rs->buf[0] == '\0') | |
6057 | error (_("Remote doesn't know how to detach")); | |
6058 | else | |
6059 | error (_("Can't detach process.")); | |
6060 | } | |
6061 | ||
6062 | /* This detaches a program to which we previously attached, using | |
6063 | inferior_ptid to identify the process. After this is done, GDB | |
6064 | can be used to debug some other program. We better not have left | |
6065 | any breakpoints in the target program or it'll die when it hits | |
6066 | one. */ | |
c906108c | 6067 | |
6b8edb51 | 6068 | void |
00431a78 | 6069 | remote_target::remote_detach_1 (inferior *inf, int from_tty) |
c906108c | 6070 | { |
e99b03dc | 6071 | int pid = inferior_ptid.pid (); |
d01949b6 | 6072 | struct remote_state *rs = get_remote_state (); |
de0d863e | 6073 | int is_fork_parent; |
c906108c | 6074 | |
55f6301a | 6075 | if (!target_has_execution ()) |
2d717e4f DJ |
6076 | error (_("No process to detach from.")); |
6077 | ||
0f48b757 | 6078 | target_announce_detach (from_tty); |
7cee1e54 | 6079 | |
e87f0fe8 PA |
6080 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) |
6081 | { | |
6082 | /* If we're in breakpoints-always-inserted mode, or the inferior | |
6083 | is running, we have to remove breakpoints before detaching. | |
6084 | We don't do this in common code instead because not all | |
6085 | targets support removing breakpoints while the target is | |
6086 | running. The remote target / gdbserver does, though. */ | |
6087 | remove_breakpoints_inf (current_inferior ()); | |
6088 | } | |
6089 | ||
c906108c | 6090 | /* Tell the remote target to detach. */ |
de0d863e | 6091 | remote_detach_pid (pid); |
82f73884 | 6092 | |
8020350c | 6093 | /* Exit only if this is the only active inferior. */ |
5b6d1e4f | 6094 | if (from_tty && !rs->extended && number_of_live_inferiors (this) == 1) |
0426ad51 | 6095 | gdb_puts (_("Ending remote debugging.\n")); |
82f73884 | 6096 | |
df5ad102 SM |
6097 | /* See if any thread of the inferior we are detaching has a pending fork |
6098 | status. In that case, we must detach from the child resulting from | |
6099 | that fork. */ | |
6100 | for (thread_info *thread : inf->non_exited_threads ()) | |
6101 | { | |
6102 | const target_waitstatus *ws = thread_pending_fork_status (thread); | |
6103 | ||
6104 | if (ws == nullptr) | |
6105 | continue; | |
6106 | ||
6107 | remote_detach_pid (ws->child_ptid ().pid ()); | |
6108 | } | |
6109 | ||
6110 | /* Check also for any pending fork events in the stop reply queue. */ | |
6111 | remote_notif_get_pending_events (¬if_client_stop); | |
6112 | for (stop_reply_up &reply : rs->stop_reply_queue) | |
6113 | { | |
6114 | if (reply->ptid.pid () != pid) | |
6115 | continue; | |
6116 | ||
6117 | if (!is_fork_status (reply->ws.kind ())) | |
6118 | continue; | |
6119 | ||
6120 | remote_detach_pid (reply->ws.child_ptid ().pid ()); | |
6121 | } | |
6122 | ||
5b6d1e4f | 6123 | thread_info *tp = find_thread_ptid (this, inferior_ptid); |
00431a78 | 6124 | |
de0d863e DB |
6125 | /* Check to see if we are detaching a fork parent. Note that if we |
6126 | are detaching a fork child, tp == NULL. */ | |
6127 | is_fork_parent = (tp != NULL | |
183be222 | 6128 | && tp->pending_follow.kind () == TARGET_WAITKIND_FORKED); |
de0d863e DB |
6129 | |
6130 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
6131 | breakpoints that should be available for the followed inferior. */ | |
6132 | if (!is_fork_parent) | |
f67c0c91 | 6133 | { |
249b5733 PA |
6134 | /* Save the pid as a string before mourning, since that will |
6135 | unpush the remote target, and we need the string after. */ | |
f2907e49 | 6136 | std::string infpid = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
6137 | |
6138 | target_mourn_inferior (inferior_ptid); | |
6139 | if (print_inferior_events) | |
6cb06a8c TT |
6140 | gdb_printf (_("[Inferior %d (%s) detached]\n"), |
6141 | inf->num, infpid.c_str ()); | |
f67c0c91 | 6142 | } |
de0d863e DB |
6143 | else |
6144 | { | |
0ac55310 | 6145 | switch_to_no_thread (); |
00431a78 | 6146 | detach_inferior (current_inferior ()); |
de0d863e | 6147 | } |
2d717e4f DJ |
6148 | } |
6149 | ||
f6ac5f3d PA |
6150 | void |
6151 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 6152 | { |
00431a78 | 6153 | remote_detach_1 (inf, from_tty); |
2d717e4f DJ |
6154 | } |
6155 | ||
f6ac5f3d PA |
6156 | void |
6157 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 6158 | { |
00431a78 | 6159 | remote_detach_1 (inf, from_tty); |
de0d863e DB |
6160 | } |
6161 | ||
6162 | /* Target follow-fork function for remote targets. On entry, and | |
6163 | at return, the current inferior is the fork parent. | |
6164 | ||
6165 | Note that although this is currently only used for extended-remote, | |
6166 | it is named remote_follow_fork in anticipation of using it for the | |
6167 | remote target as well. */ | |
6168 | ||
e97007b6 | 6169 | void |
82d1f134 SM |
6170 | remote_target::follow_fork (inferior *child_inf, ptid_t child_ptid, |
6171 | target_waitkind fork_kind, bool follow_child, | |
6172 | bool detach_fork) | |
de0d863e | 6173 | { |
82d1f134 SM |
6174 | process_stratum_target::follow_fork (child_inf, child_ptid, |
6175 | fork_kind, follow_child, detach_fork); | |
6176 | ||
ff52c073 CS |
6177 | if ((fork_kind == TARGET_WAITKIND_FORKED |
6178 | && m_features.remote_fork_event_p ()) | |
6179 | || (fork_kind == TARGET_WAITKIND_VFORKED | |
6180 | && m_features.remote_vfork_event_p ())) | |
de0d863e DB |
6181 | { |
6182 | /* When following the parent and detaching the child, we detach | |
6183 | the child here. For the case of following the child and | |
6184 | detaching the parent, the detach is done in the target- | |
6185 | independent follow fork code in infrun.c. We can't use | |
6186 | target_detach when detaching an unfollowed child because | |
6187 | the client side doesn't know anything about the child. */ | |
6188 | if (detach_fork && !follow_child) | |
6189 | { | |
6190 | /* Detach the fork child. */ | |
3a849a34 | 6191 | remote_detach_pid (child_ptid.pid ()); |
de0d863e DB |
6192 | } |
6193 | } | |
c906108c SS |
6194 | } |
6195 | ||
94585166 | 6196 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
294c36eb | 6197 | in the program space of the new inferior. */ |
94585166 | 6198 | |
f6ac5f3d | 6199 | void |
294c36eb SM |
6200 | remote_target::follow_exec (inferior *follow_inf, ptid_t ptid, |
6201 | const char *execd_pathname) | |
94585166 | 6202 | { |
294c36eb SM |
6203 | process_stratum_target::follow_exec (follow_inf, ptid, execd_pathname); |
6204 | ||
94585166 DB |
6205 | /* We know that this is a target file name, so if it has the "target:" |
6206 | prefix we strip it off before saving it in the program space. */ | |
6207 | if (is_target_filename (execd_pathname)) | |
6208 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
6209 | ||
294c36eb | 6210 | set_pspace_remote_exec_file (follow_inf->pspace, execd_pathname); |
94585166 DB |
6211 | } |
6212 | ||
6ad8ae5c DJ |
6213 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
6214 | ||
f6ac5f3d PA |
6215 | void |
6216 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 6217 | { |
43ff13b4 | 6218 | if (args) |
2d717e4f | 6219 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 6220 | |
8020350c | 6221 | /* Make sure we unpush even the extended remote targets. Calling |
5b6d1e4f PA |
6222 | target_mourn_inferior won't unpush, and |
6223 | remote_target::mourn_inferior won't unpush if there is more than | |
6224 | one inferior left. */ | |
6225 | remote_unpush_target (this); | |
2d717e4f | 6226 | |
43ff13b4 | 6227 | if (from_tty) |
0426ad51 | 6228 | gdb_puts ("Ending remote debugging.\n"); |
43ff13b4 JM |
6229 | } |
6230 | ||
2d717e4f DJ |
6231 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
6232 | be chatty about it. */ | |
6233 | ||
f6ac5f3d PA |
6234 | void |
6235 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
6236 | { |
6237 | struct remote_state *rs = get_remote_state (); | |
be86555c | 6238 | int pid; |
96ef3384 | 6239 | char *wait_status = NULL; |
2d717e4f | 6240 | |
74164c56 | 6241 | pid = parse_pid_to_attach (args); |
2d717e4f | 6242 | |
74164c56 JK |
6243 | /* Remote PID can be freely equal to getpid, do not check it here the same |
6244 | way as in other targets. */ | |
2d717e4f | 6245 | |
ff52c073 | 6246 | if (m_features.packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
6247 | error (_("This target does not support attaching to a process")); |
6248 | ||
bc521517 | 6249 | target_announce_attach (from_tty, pid); |
7cee1e54 | 6250 | |
8d64371b | 6251 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f | 6252 | putpkt (rs->buf); |
8d64371b | 6253 | getpkt (&rs->buf, 0); |
2d717e4f | 6254 | |
ff52c073 | 6255 | switch (m_features.packet_ok (rs->buf, PACKET_vAttach)) |
2d717e4f | 6256 | { |
4082afcc | 6257 | case PACKET_OK: |
6efcd9a8 | 6258 | if (!target_is_non_stop_p ()) |
74531fed PA |
6259 | { |
6260 | /* Save the reply for later. */ | |
8d64371b TT |
6261 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
6262 | strcpy (wait_status, rs->buf.data ()); | |
74531fed | 6263 | } |
8d64371b | 6264 | else if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 6265 | error (_("Attaching to %s failed with: %s"), |
a068643d | 6266 | target_pid_to_str (ptid_t (pid)).c_str (), |
8d64371b | 6267 | rs->buf.data ()); |
4082afcc PA |
6268 | break; |
6269 | case PACKET_UNKNOWN: | |
6270 | error (_("This target does not support attaching to a process")); | |
6271 | default: | |
50fa3001 SDJ |
6272 | error (_("Attaching to %s failed"), |
6273 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
2d717e4f | 6274 | } |
2d717e4f | 6275 | |
0ac55310 | 6276 | switch_to_inferior_no_thread (remote_add_inferior (false, pid, 1, 0)); |
bad34192 | 6277 | |
f2907e49 | 6278 | inferior_ptid = ptid_t (pid); |
79d7f229 | 6279 | |
6efcd9a8 | 6280 | if (target_is_non_stop_p ()) |
bad34192 | 6281 | { |
bad34192 | 6282 | /* Get list of threads. */ |
f6ac5f3d | 6283 | update_thread_list (); |
82f73884 | 6284 | |
0ac55310 PA |
6285 | thread_info *thread = first_thread_of_inferior (current_inferior ()); |
6286 | if (thread != nullptr) | |
6287 | switch_to_thread (thread); | |
bad34192 PA |
6288 | |
6289 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 6290 | record_currthread (rs, minus_one_ptid); |
bad34192 | 6291 | } |
74531fed | 6292 | else |
bad34192 | 6293 | { |
0ac55310 PA |
6294 | /* Now, if we have thread information, update the main thread's |
6295 | ptid. */ | |
6296 | ptid_t curr_ptid = remote_current_thread (ptid_t (pid)); | |
bad34192 | 6297 | |
b622494e AB |
6298 | /* Add the main thread to the thread list. We add the thread |
6299 | silently in this case (the final true parameter). */ | |
6300 | thread_info *thr = remote_add_thread (curr_ptid, true, true, true); | |
0ac55310 PA |
6301 | |
6302 | switch_to_thread (thr); | |
bad34192 | 6303 | } |
c0a2216e | 6304 | |
96ef3384 UW |
6305 | /* Next, if the target can specify a description, read it. We do |
6306 | this before anything involving memory or registers. */ | |
6307 | target_find_description (); | |
6308 | ||
6efcd9a8 | 6309 | if (!target_is_non_stop_p ()) |
74531fed PA |
6310 | { |
6311 | /* Use the previously fetched status. */ | |
6312 | gdb_assert (wait_status != NULL); | |
6313 | ||
4f626cad AB |
6314 | struct notif_event *reply |
6315 | = remote_notif_parse (this, ¬if_client_stop, wait_status); | |
74531fed | 6316 | |
4f626cad | 6317 | push_stop_reply ((struct stop_reply *) reply); |
74531fed PA |
6318 | } |
6319 | else | |
621cc310 PA |
6320 | { |
6321 | gdb_assert (wait_status == NULL); | |
6322 | ||
6323 | gdb_assert (target_can_async_p ()); | |
621cc310 | 6324 | } |
2d717e4f DJ |
6325 | } |
6326 | ||
b9c1d481 AS |
6327 | /* Implementation of the to_post_attach method. */ |
6328 | ||
f6ac5f3d PA |
6329 | void |
6330 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 6331 | { |
6efcd9a8 PA |
6332 | /* Get text, data & bss offsets. */ |
6333 | get_offsets (); | |
6334 | ||
b9c1d481 AS |
6335 | /* In certain cases GDB might not have had the chance to start |
6336 | symbol lookup up until now. This could happen if the debugged | |
6337 | binary is not using shared libraries, the vsyscall page is not | |
6338 | present (on Linux) and the binary itself hadn't changed since the | |
6339 | debugging process was started. */ | |
a42d7dd8 | 6340 | if (current_program_space->symfile_object_file != NULL) |
b9c1d481 AS |
6341 | remote_check_symbols(); |
6342 | } | |
6343 | ||
c906108c | 6344 | \f |
506fb367 DJ |
6345 | /* Check for the availability of vCont. This function should also check |
6346 | the response. */ | |
c906108c | 6347 | |
6b8edb51 PA |
6348 | void |
6349 | remote_target::remote_vcont_probe () | |
c906108c | 6350 | { |
6b8edb51 | 6351 | remote_state *rs = get_remote_state (); |
2e9f7625 | 6352 | char *buf; |
6d820c5c | 6353 | |
8d64371b | 6354 | strcpy (rs->buf.data (), "vCont?"); |
2e9f7625 | 6355 | putpkt (rs->buf); |
8d64371b TT |
6356 | getpkt (&rs->buf, 0); |
6357 | buf = rs->buf.data (); | |
c906108c | 6358 | |
506fb367 | 6359 | /* Make sure that the features we assume are supported. */ |
61012eef | 6360 | if (startswith (buf, "vCont")) |
506fb367 DJ |
6361 | { |
6362 | char *p = &buf[5]; | |
750ce8d1 | 6363 | int support_c, support_C; |
506fb367 | 6364 | |
750ce8d1 YQ |
6365 | rs->supports_vCont.s = 0; |
6366 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
6367 | support_c = 0; |
6368 | support_C = 0; | |
d458bd84 | 6369 | rs->supports_vCont.t = 0; |
c1e36e3e | 6370 | rs->supports_vCont.r = 0; |
506fb367 DJ |
6371 | while (p && *p == ';') |
6372 | { | |
6373 | p++; | |
6374 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 6375 | rs->supports_vCont.s = 1; |
506fb367 | 6376 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 6377 | rs->supports_vCont.S = 1; |
506fb367 DJ |
6378 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6379 | support_c = 1; | |
6380 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
6381 | support_C = 1; | |
74531fed | 6382 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 6383 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
6384 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6385 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
6386 | |
6387 | p = strchr (p, ';'); | |
6388 | } | |
c906108c | 6389 | |
750ce8d1 YQ |
6390 | /* If c, and C are not all supported, we can't use vCont. Clearing |
6391 | BUF will make packet_ok disable the packet. */ | |
6392 | if (!support_c || !support_C) | |
506fb367 DJ |
6393 | buf[0] = 0; |
6394 | } | |
c906108c | 6395 | |
ff52c073 | 6396 | m_features.packet_ok (rs->buf, PACKET_vCont); |
5b6d1e4f | 6397 | rs->supports_vCont_probed = true; |
506fb367 | 6398 | } |
c906108c | 6399 | |
0d8f58ca PA |
6400 | /* Helper function for building "vCont" resumptions. Write a |
6401 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
6402 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
6403 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
6404 | resumed thread should be single-stepped and/or signalled. If PTID | |
6405 | equals minus_one_ptid, then all threads are resumed; if PTID | |
d51926f0 PA |
6406 | represents a process, then all threads of the process are |
6407 | resumed. */ | |
0d8f58ca | 6408 | |
6b8edb51 PA |
6409 | char * |
6410 | remote_target::append_resumption (char *p, char *endp, | |
6411 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
6412 | { |
6413 | struct remote_state *rs = get_remote_state (); | |
6414 | ||
a493e3e2 | 6415 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 6416 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
6417 | else if (step |
6418 | /* GDB is willing to range step. */ | |
6419 | && use_range_stepping | |
6420 | /* Target supports range stepping. */ | |
6421 | && rs->supports_vCont.r | |
6422 | /* We don't currently support range stepping multiple | |
6423 | threads with a wildcard (though the protocol allows it, | |
6424 | so stubs shouldn't make an active effort to forbid | |
6425 | it). */ | |
ff52c073 | 6426 | && !(m_features.remote_multi_process_p () && ptid.is_pid ())) |
c1e36e3e PA |
6427 | { |
6428 | struct thread_info *tp; | |
6429 | ||
d7e15655 | 6430 | if (ptid == minus_one_ptid) |
c1e36e3e PA |
6431 | { |
6432 | /* If we don't know about the target thread's tid, then | |
6433 | we're resuming magic_null_ptid (see caller). */ | |
5b6d1e4f | 6434 | tp = find_thread_ptid (this, magic_null_ptid); |
c1e36e3e PA |
6435 | } |
6436 | else | |
5b6d1e4f | 6437 | tp = find_thread_ptid (this, ptid); |
c1e36e3e PA |
6438 | gdb_assert (tp != NULL); |
6439 | ||
6440 | if (tp->control.may_range_step) | |
6441 | { | |
6442 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
6443 | ||
6444 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6445 | phex_nz (tp->control.step_range_start, | |
6446 | addr_size), | |
6447 | phex_nz (tp->control.step_range_end, | |
6448 | addr_size)); | |
6449 | } | |
6450 | else | |
6451 | p += xsnprintf (p, endp - p, ";s"); | |
6452 | } | |
0d8f58ca PA |
6453 | else if (step) |
6454 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6455 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6456 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6457 | else | |
6458 | p += xsnprintf (p, endp - p, ";c"); | |
6459 | ||
ff52c073 | 6460 | if (m_features.remote_multi_process_p () && ptid.is_pid ()) |
0d8f58ca PA |
6461 | { |
6462 | ptid_t nptid; | |
6463 | ||
6464 | /* All (-1) threads of process. */ | |
184ea2f7 | 6465 | nptid = ptid_t (ptid.pid (), -1); |
0d8f58ca PA |
6466 | |
6467 | p += xsnprintf (p, endp - p, ":"); | |
6468 | p = write_ptid (p, endp, nptid); | |
6469 | } | |
d7e15655 | 6470 | else if (ptid != minus_one_ptid) |
0d8f58ca PA |
6471 | { |
6472 | p += xsnprintf (p, endp - p, ":"); | |
6473 | p = write_ptid (p, endp, ptid); | |
6474 | } | |
6475 | ||
6476 | return p; | |
6477 | } | |
6478 | ||
799a2abe PA |
6479 | /* Clear the thread's private info on resume. */ |
6480 | ||
6481 | static void | |
6482 | resume_clear_thread_private_info (struct thread_info *thread) | |
6483 | { | |
6484 | if (thread->priv != NULL) | |
6485 | { | |
7aabaf9d SM |
6486 | remote_thread_info *priv = get_remote_thread_info (thread); |
6487 | ||
6488 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6489 | priv->watch_data_address = 0; | |
799a2abe PA |
6490 | } |
6491 | } | |
6492 | ||
e5ef252a PA |
6493 | /* Append a vCont continue-with-signal action for threads that have a |
6494 | non-zero stop signal. */ | |
6495 | ||
6b8edb51 PA |
6496 | char * |
6497 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6498 | ptid_t ptid) | |
e5ef252a | 6499 | { |
5b6d1e4f | 6500 | for (thread_info *thread : all_non_exited_threads (this, ptid)) |
08036331 | 6501 | if (inferior_ptid != thread->ptid |
1edb66d8 | 6502 | && thread->stop_signal () != GDB_SIGNAL_0) |
e5ef252a PA |
6503 | { |
6504 | p = append_resumption (p, endp, thread->ptid, | |
1edb66d8 SM |
6505 | 0, thread->stop_signal ()); |
6506 | thread->set_stop_signal (GDB_SIGNAL_0); | |
799a2abe | 6507 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6508 | } |
6509 | ||
6510 | return p; | |
6511 | } | |
6512 | ||
7b68ffbb PA |
6513 | /* Set the target running, using the packets that use Hc |
6514 | (c/s/C/S). */ | |
6515 | ||
6b8edb51 PA |
6516 | void |
6517 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6518 | gdb_signal siggnal) | |
7b68ffbb PA |
6519 | { |
6520 | struct remote_state *rs = get_remote_state (); | |
7b68ffbb PA |
6521 | char *buf; |
6522 | ||
6523 | rs->last_sent_signal = siggnal; | |
6524 | rs->last_sent_step = step; | |
6525 | ||
6526 | /* The c/s/C/S resume packets use Hc, so set the continue | |
6527 | thread. */ | |
d7e15655 | 6528 | if (ptid == minus_one_ptid) |
7b68ffbb PA |
6529 | set_continue_thread (any_thread_ptid); |
6530 | else | |
6531 | set_continue_thread (ptid); | |
6532 | ||
5b6d1e4f | 6533 | for (thread_info *thread : all_non_exited_threads (this)) |
7b68ffbb PA |
6534 | resume_clear_thread_private_info (thread); |
6535 | ||
8d64371b | 6536 | buf = rs->buf.data (); |
6b8edb51 | 6537 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6538 | { |
6539 | /* We don't pass signals to the target in reverse exec mode. */ | |
6540 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
6541 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
6542 | siggnal); | |
6543 | ||
ff52c073 | 6544 | if (step && m_features.packet_support (PACKET_bs) == PACKET_DISABLE) |
7b68ffbb | 6545 | error (_("Remote reverse-step not supported.")); |
ff52c073 | 6546 | if (!step && m_features.packet_support (PACKET_bc) == PACKET_DISABLE) |
7b68ffbb PA |
6547 | error (_("Remote reverse-continue not supported.")); |
6548 | ||
6549 | strcpy (buf, step ? "bs" : "bc"); | |
6550 | } | |
6551 | else if (siggnal != GDB_SIGNAL_0) | |
6552 | { | |
6553 | buf[0] = step ? 'S' : 'C'; | |
6554 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
6555 | buf[2] = tohex (((int) siggnal) & 0xf); | |
6556 | buf[3] = '\0'; | |
6557 | } | |
6558 | else | |
6559 | strcpy (buf, step ? "s" : "c"); | |
6560 | ||
6561 | putpkt (buf); | |
6562 | } | |
6563 | ||
d51926f0 PA |
6564 | /* Resume the remote inferior by using a "vCont" packet. SCOPE_PTID, |
6565 | STEP, and SIGGNAL have the same meaning as in target_resume. This | |
6566 | function returns non-zero iff it resumes the inferior. | |
44eaed12 | 6567 | |
7b68ffbb PA |
6568 | This function issues a strict subset of all possible vCont commands |
6569 | at the moment. */ | |
44eaed12 | 6570 | |
6b8edb51 | 6571 | int |
d51926f0 | 6572 | remote_target::remote_resume_with_vcont (ptid_t scope_ptid, int step, |
6b8edb51 | 6573 | enum gdb_signal siggnal) |
506fb367 DJ |
6574 | { |
6575 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
6576 | char *p; |
6577 | char *endp; | |
44eaed12 | 6578 | |
7b68ffbb | 6579 | /* No reverse execution actions defined for vCont. */ |
6b8edb51 | 6580 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6581 | return 0; |
6582 | ||
ff52c073 | 6583 | if (m_features.packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6584 | remote_vcont_probe (); |
44eaed12 | 6585 | |
ff52c073 | 6586 | if (m_features.packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 6587 | return 0; |
44eaed12 | 6588 | |
8d64371b TT |
6589 | p = rs->buf.data (); |
6590 | endp = p + get_remote_packet_size (); | |
82f73884 | 6591 | |
506fb367 DJ |
6592 | /* If we could generate a wider range of packets, we'd have to worry |
6593 | about overflowing BUF. Should there be a generic | |
6594 | "multi-part-packet" packet? */ | |
6595 | ||
0d8f58ca PA |
6596 | p += xsnprintf (p, endp - p, "vCont"); |
6597 | ||
d51926f0 | 6598 | if (scope_ptid == magic_null_ptid) |
c906108c | 6599 | { |
79d7f229 PA |
6600 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
6601 | so we don't have any TID numbers the inferior will | |
6602 | understand. Make sure to only send forms that do not specify | |
6603 | a TID. */ | |
a9cbf802 | 6604 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 6605 | } |
d51926f0 | 6606 | else if (scope_ptid == minus_one_ptid || scope_ptid.is_pid ()) |
506fb367 | 6607 | { |
0d8f58ca PA |
6608 | /* Resume all threads (of all processes, or of a single |
6609 | process), with preference for INFERIOR_PTID. This assumes | |
6610 | inferior_ptid belongs to the set of all threads we are about | |
6611 | to resume. */ | |
a493e3e2 | 6612 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 6613 | { |
0d8f58ca PA |
6614 | /* Step inferior_ptid, with or without signal. */ |
6615 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 6616 | } |
0d8f58ca | 6617 | |
e5ef252a PA |
6618 | /* Also pass down any pending signaled resumption for other |
6619 | threads not the current. */ | |
d51926f0 | 6620 | p = append_pending_thread_resumptions (p, endp, scope_ptid); |
e5ef252a | 6621 | |
0d8f58ca | 6622 | /* And continue others without a signal. */ |
d51926f0 | 6623 | append_resumption (p, endp, scope_ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
6624 | } |
6625 | else | |
506fb367 | 6626 | { |
d51926f0 PA |
6627 | /* Scheduler locking; resume only SCOPE_PTID. */ |
6628 | append_resumption (p, endp, scope_ptid, step, siggnal); | |
506fb367 | 6629 | } |
c906108c | 6630 | |
8d64371b | 6631 | gdb_assert (strlen (rs->buf.data ()) < get_remote_packet_size ()); |
82f73884 | 6632 | putpkt (rs->buf); |
506fb367 | 6633 | |
6efcd9a8 | 6634 | if (target_is_non_stop_p ()) |
74531fed PA |
6635 | { |
6636 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6637 | reply will be reported asynchronously by means of a `%Stop' | |
6638 | notification. */ | |
8d64371b TT |
6639 | getpkt (&rs->buf, 0); |
6640 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6641 | error (_("Unexpected vCont reply in non-stop mode: %s"), | |
6642 | rs->buf.data ()); | |
74531fed PA |
6643 | } |
6644 | ||
506fb367 | 6645 | return 1; |
c906108c | 6646 | } |
43ff13b4 | 6647 | |
506fb367 DJ |
6648 | /* Tell the remote machine to resume. */ |
6649 | ||
f6ac5f3d | 6650 | void |
d51926f0 | 6651 | remote_target::resume (ptid_t scope_ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 6652 | { |
d01949b6 | 6653 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6654 | |
85ad3aaf PA |
6655 | /* When connected in non-stop mode, the core resumes threads |
6656 | individually. Resuming remote threads directly in target_resume | |
6657 | would thus result in sending one packet per thread. Instead, to | |
6658 | minimize roundtrip latency, here we just store the resume | |
c9d22089 SM |
6659 | request (put the thread in RESUMED_PENDING_VCONT state); the actual remote |
6660 | resumption will be done in remote_target::commit_resume, where we'll be | |
6661 | able to do vCont action coalescing. */ | |
f6ac5f3d | 6662 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6663 | { |
d51926f0 PA |
6664 | remote_thread_info *remote_thr |
6665 | = get_remote_thread_info (inferior_thread ()); | |
7aabaf9d | 6666 | |
c9d22089 SM |
6667 | /* We don't expect the core to ask to resume an already resumed (from |
6668 | its point of view) thread. */ | |
a6c11cbb | 6669 | gdb_assert (remote_thr->get_resume_state () == resume_state::NOT_RESUMED); |
c9d22089 SM |
6670 | |
6671 | remote_thr->set_resumed_pending_vcont (step, siggnal); | |
d51926f0 PA |
6672 | |
6673 | /* There's actually nothing that says that the core can't | |
6674 | request a wildcard resume in non-stop mode, though. It's | |
6675 | just that we know it doesn't currently, so we don't bother | |
6676 | with it. */ | |
6677 | gdb_assert (scope_ptid == inferior_ptid); | |
85ad3aaf PA |
6678 | return; |
6679 | } | |
6680 | ||
722247f1 YQ |
6681 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6682 | (explained in remote-notif.c:handle_notification) so | |
6683 | remote_notif_process is not called. We need find a place where | |
6684 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6685 | before resuming inferior, because inferior was stopped and no RSP | |
6686 | traffic at that moment. */ | |
6efcd9a8 | 6687 | if (!target_is_non_stop_p ()) |
5965e028 | 6688 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6689 | |
f6ac5f3d | 6690 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6691 | |
7b68ffbb | 6692 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
d51926f0 PA |
6693 | if (!remote_resume_with_vcont (scope_ptid, step, siggnal)) |
6694 | remote_resume_with_hc (scope_ptid, step, siggnal); | |
43ff13b4 | 6695 | |
c9d22089 | 6696 | /* Update resumed state tracked by the remote target. */ |
d51926f0 | 6697 | for (thread_info *tp : all_non_exited_threads (this, scope_ptid)) |
c9d22089 SM |
6698 | get_remote_thread_info (tp)->set_resumed (); |
6699 | ||
e24a49d8 PA |
6700 | /* We've just told the target to resume. The remote server will |
6701 | wait for the inferior to stop, and then send a stop reply. In | |
6702 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6703 | because the stub wouldn't be ready to process it. This applies |
6704 | only to the base all-stop protocol, however. In non-stop (which | |
6705 | only supports vCont), the stub replies with an "OK", and is | |
6706 | immediate able to process further serial input. */ | |
6efcd9a8 | 6707 | if (!target_is_non_stop_p ()) |
74531fed | 6708 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6709 | } |
85ad3aaf | 6710 | |
85ad3aaf PA |
6711 | /* Private per-inferior info for target remote processes. */ |
6712 | ||
089354bb | 6713 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6714 | { |
6715 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6716 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6717 | }; |
6718 | ||
089354bb SM |
6719 | /* Get the remote private inferior data associated to INF. */ |
6720 | ||
6721 | static remote_inferior * | |
6722 | get_remote_inferior (inferior *inf) | |
6723 | { | |
6724 | if (inf->priv == NULL) | |
6725 | inf->priv.reset (new remote_inferior); | |
6726 | ||
98ed24fb | 6727 | return gdb::checked_static_cast<remote_inferior *> (inf->priv.get ()); |
089354bb SM |
6728 | } |
6729 | ||
f5db4863 | 6730 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6731 | outgoing packet buffer. This is used to send multiple vCont |
6732 | packets if we have more actions than would fit a single packet. */ | |
6733 | ||
f5db4863 | 6734 | class vcont_builder |
85ad3aaf | 6735 | { |
f5db4863 | 6736 | public: |
6b8edb51 PA |
6737 | explicit vcont_builder (remote_target *remote) |
6738 | : m_remote (remote) | |
f5db4863 PA |
6739 | { |
6740 | restart (); | |
6741 | } | |
6742 | ||
6743 | void flush (); | |
6744 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6745 | ||
6746 | private: | |
6747 | void restart (); | |
6748 | ||
6b8edb51 PA |
6749 | /* The remote target. */ |
6750 | remote_target *m_remote; | |
6751 | ||
85ad3aaf PA |
6752 | /* Pointer to the first action. P points here if no action has been |
6753 | appended yet. */ | |
f5db4863 | 6754 | char *m_first_action; |
85ad3aaf PA |
6755 | |
6756 | /* Where the next action will be appended. */ | |
f5db4863 | 6757 | char *m_p; |
85ad3aaf PA |
6758 | |
6759 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6760 | char *m_endp; |
85ad3aaf PA |
6761 | }; |
6762 | ||
6763 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6764 | ||
f5db4863 PA |
6765 | void |
6766 | vcont_builder::restart () | |
85ad3aaf | 6767 | { |
6b8edb51 | 6768 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6769 | |
8d64371b TT |
6770 | m_p = rs->buf.data (); |
6771 | m_endp = m_p + m_remote->get_remote_packet_size (); | |
f5db4863 PA |
6772 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6773 | m_first_action = m_p; | |
85ad3aaf PA |
6774 | } |
6775 | ||
6776 | /* If the vCont packet being built has any action, send it to the | |
6777 | remote end. */ | |
6778 | ||
f5db4863 PA |
6779 | void |
6780 | vcont_builder::flush () | |
85ad3aaf PA |
6781 | { |
6782 | struct remote_state *rs; | |
6783 | ||
f5db4863 | 6784 | if (m_p == m_first_action) |
85ad3aaf PA |
6785 | return; |
6786 | ||
6b8edb51 PA |
6787 | rs = m_remote->get_remote_state (); |
6788 | m_remote->putpkt (rs->buf); | |
8d64371b TT |
6789 | m_remote->getpkt (&rs->buf, 0); |
6790 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6791 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf.data ()); | |
85ad3aaf PA |
6792 | } |
6793 | ||
6794 | /* The largest action is range-stepping, with its two addresses. This | |
6795 | is more than sufficient. If a new, bigger action is created, it'll | |
6796 | quickly trigger a failed assertion in append_resumption (and we'll | |
6797 | just bump this). */ | |
6798 | #define MAX_ACTION_SIZE 200 | |
6799 | ||
6800 | /* Append a new vCont action in the outgoing packet being built. If | |
6801 | the action doesn't fit the packet along with previous actions, push | |
6802 | what we've got so far to the remote end and start over a new vCont | |
6803 | packet (with the new action). */ | |
6804 | ||
f5db4863 PA |
6805 | void |
6806 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6807 | { |
6808 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6809 | |
6b8edb51 PA |
6810 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6811 | ptid, step, siggnal); | |
85ad3aaf PA |
6812 | |
6813 | /* Check whether this new action would fit in the vCont packet along | |
6814 | with previous actions. If not, send what we've got so far and | |
6815 | start a new vCont packet. */ | |
f5db4863 PA |
6816 | size_t rsize = endp - buf; |
6817 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6818 | { |
f5db4863 PA |
6819 | flush (); |
6820 | restart (); | |
85ad3aaf PA |
6821 | |
6822 | /* Should now fit. */ | |
f5db4863 | 6823 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6824 | } |
6825 | ||
f5db4863 PA |
6826 | memcpy (m_p, buf, rsize); |
6827 | m_p += rsize; | |
6828 | *m_p = '\0'; | |
85ad3aaf PA |
6829 | } |
6830 | ||
6831 | /* to_commit_resume implementation. */ | |
6832 | ||
f6ac5f3d | 6833 | void |
1192f124 | 6834 | remote_target::commit_resumed () |
85ad3aaf | 6835 | { |
85ad3aaf PA |
6836 | /* If connected in all-stop mode, we'd send the remote resume |
6837 | request directly from remote_resume. Likewise if | |
6838 | reverse-debugging, as there are no defined vCont actions for | |
6839 | reverse execution. */ | |
f6ac5f3d | 6840 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6841 | return; |
6842 | ||
6843 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6844 | instead of resuming all threads of each process individually. | |
6845 | However, if any thread of a process must remain halted, we can't | |
6846 | send wildcard resumes and must send one action per thread. | |
6847 | ||
6848 | Care must be taken to not resume threads/processes the server | |
6849 | side already told us are stopped, but the core doesn't know about | |
6850 | yet, because the events are still in the vStopped notification | |
6851 | queue. For example: | |
6852 | ||
6853 | #1 => vCont s:p1.1;c | |
6854 | #2 <= OK | |
6855 | #3 <= %Stopped T05 p1.1 | |
6856 | #4 => vStopped | |
6857 | #5 <= T05 p1.2 | |
6858 | #6 => vStopped | |
6859 | #7 <= OK | |
6860 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6861 | #9 => vCont s:p1.1;c | |
6862 | ||
6863 | The last vCont above would resume thread p1.2 by mistake, because | |
6864 | the server has no idea that the event for p1.2 had not been | |
6865 | handled yet. | |
6866 | ||
6867 | The server side must similarly ignore resume actions for the | |
6868 | thread that has a pending %Stopped notification (and any other | |
6869 | threads with events pending), until GDB acks the notification | |
6870 | with vStopped. Otherwise, e.g., the following case is | |
6871 | mishandled: | |
6872 | ||
6873 | #1 => g (or any other packet) | |
6874 | #2 <= [registers] | |
6875 | #3 <= %Stopped T05 p1.2 | |
6876 | #4 => vCont s:p1.1;c | |
6877 | #5 <= OK | |
6878 | ||
6879 | Above, the server must not resume thread p1.2. GDB can't know | |
6880 | that p1.2 stopped until it acks the %Stopped notification, and | |
6881 | since from GDB's perspective all threads should be running, it | |
6882 | sends a "c" action. | |
6883 | ||
6884 | Finally, special care must also be given to handling fork/vfork | |
6885 | events. A (v)fork event actually tells us that two processes | |
6886 | stopped -- the parent and the child. Until we follow the fork, | |
6887 | we must not resume the child. Therefore, if we have a pending | |
6888 | fork follow, we must not send a global wildcard resume action | |
6889 | (vCont;c). We can still send process-wide wildcards though. */ | |
6890 | ||
6891 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
2f63ec5c | 6892 | bool may_global_wildcard_vcont = true; |
85ad3aaf PA |
6893 | |
6894 | /* And assume every process is individually wildcard-able too. */ | |
5b6d1e4f | 6895 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6896 | { |
089354bb SM |
6897 | remote_inferior *priv = get_remote_inferior (inf); |
6898 | ||
6899 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6900 | } |
6901 | ||
6902 | /* Check for any pending events (not reported or processed yet) and | |
6903 | disable process and global wildcard resumes appropriately. */ | |
6904 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6905 | ||
1192f124 SM |
6906 | bool any_pending_vcont_resume = false; |
6907 | ||
5b6d1e4f | 6908 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6909 | { |
c9d22089 SM |
6910 | remote_thread_info *priv = get_remote_thread_info (tp); |
6911 | ||
85ad3aaf PA |
6912 | /* If a thread of a process is not meant to be resumed, then we |
6913 | can't wildcard that process. */ | |
a6c11cbb | 6914 | if (priv->get_resume_state () == resume_state::NOT_RESUMED) |
85ad3aaf | 6915 | { |
089354bb | 6916 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6917 | |
6918 | /* And if we can't wildcard a process, we can't wildcard | |
6919 | everything either. */ | |
2f63ec5c | 6920 | may_global_wildcard_vcont = false; |
85ad3aaf PA |
6921 | continue; |
6922 | } | |
6923 | ||
1192f124 SM |
6924 | if (priv->get_resume_state () == resume_state::RESUMED_PENDING_VCONT) |
6925 | any_pending_vcont_resume = true; | |
6926 | ||
85ad3aaf PA |
6927 | /* If a thread is the parent of an unfollowed fork, then we |
6928 | can't do a global wildcard, as that would resume the fork | |
6929 | child. */ | |
28561a65 | 6930 | if (thread_pending_fork_status (tp) != nullptr) |
2f63ec5c | 6931 | may_global_wildcard_vcont = false; |
85ad3aaf PA |
6932 | } |
6933 | ||
1192f124 SM |
6934 | /* We didn't have any resumed thread pending a vCont resume, so nothing to |
6935 | do. */ | |
6936 | if (!any_pending_vcont_resume) | |
6937 | return; | |
6938 | ||
85ad3aaf PA |
6939 | /* Now let's build the vCont packet(s). Actions must be appended |
6940 | from narrower to wider scopes (thread -> process -> global). If | |
6941 | we end up with too many actions for a single packet vcont_builder | |
6942 | flushes the current vCont packet to the remote side and starts a | |
6943 | new one. */ | |
6b8edb51 | 6944 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
6945 | |
6946 | /* Threads first. */ | |
5b6d1e4f | 6947 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6948 | { |
7aabaf9d | 6949 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf | 6950 | |
c9d22089 SM |
6951 | /* If the thread was previously vCont-resumed, no need to send a specific |
6952 | action for it. If we didn't receive a resume request for it, don't | |
6953 | send an action for it either. */ | |
a6c11cbb | 6954 | if (remote_thr->get_resume_state () != resume_state::RESUMED_PENDING_VCONT) |
85ad3aaf PA |
6955 | continue; |
6956 | ||
6957 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6958 | ||
1192f124 SM |
6959 | /* We should never be commit-resuming a thread that has a stop reply. |
6960 | Otherwise, we would end up reporting a stop event for a thread while | |
6961 | it is running on the remote target. */ | |
6962 | remote_state *rs = get_remote_state (); | |
6963 | for (const auto &stop_reply : rs->stop_reply_queue) | |
6964 | gdb_assert (stop_reply->ptid != tp->ptid); | |
6965 | ||
c9d22089 SM |
6966 | const resumed_pending_vcont_info &info |
6967 | = remote_thr->resumed_pending_vcont_info (); | |
85ad3aaf | 6968 | |
c9d22089 SM |
6969 | /* Check if we need to send a specific action for this thread. If not, |
6970 | it will be included in a wildcard resume instead. */ | |
6971 | if (info.step || info.sig != GDB_SIGNAL_0 | |
6972 | || !get_remote_inferior (tp->inf)->may_wildcard_vcont) | |
6973 | vcont_builder.push_action (tp->ptid, info.step, info.sig); | |
6974 | ||
6975 | remote_thr->set_resumed (); | |
85ad3aaf PA |
6976 | } |
6977 | ||
6978 | /* Now check whether we can send any process-wide wildcard. This is | |
6979 | to avoid sending a global wildcard in the case nothing is | |
6980 | supposed to be resumed. */ | |
2f63ec5c | 6981 | bool any_process_wildcard = false; |
85ad3aaf | 6982 | |
5b6d1e4f | 6983 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6984 | { |
089354bb | 6985 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6986 | { |
2f63ec5c | 6987 | any_process_wildcard = true; |
85ad3aaf PA |
6988 | break; |
6989 | } | |
6990 | } | |
6991 | ||
6992 | if (any_process_wildcard) | |
6993 | { | |
6994 | /* If all processes are wildcard-able, then send a single "c" | |
6995 | action, otherwise, send an "all (-1) threads of process" | |
6996 | continue action for each running process, if any. */ | |
6997 | if (may_global_wildcard_vcont) | |
6998 | { | |
f5db4863 PA |
6999 | vcont_builder.push_action (minus_one_ptid, |
7000 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
7001 | } |
7002 | else | |
7003 | { | |
5b6d1e4f | 7004 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 7005 | { |
089354bb | 7006 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 7007 | { |
f2907e49 | 7008 | vcont_builder.push_action (ptid_t (inf->pid), |
f5db4863 | 7009 | false, GDB_SIGNAL_0); |
85ad3aaf PA |
7010 | } |
7011 | } | |
7012 | } | |
7013 | } | |
7014 | ||
f5db4863 | 7015 | vcont_builder.flush (); |
85ad3aaf PA |
7016 | } |
7017 | ||
b4b1a226 SM |
7018 | /* Implementation of target_has_pending_events. */ |
7019 | ||
7020 | bool | |
7021 | remote_target::has_pending_events () | |
7022 | { | |
7023 | if (target_can_async_p ()) | |
7024 | { | |
7025 | remote_state *rs = get_remote_state (); | |
7026 | ||
7027 | if (async_event_handler_marked (rs->remote_async_inferior_event_token)) | |
7028 | return true; | |
7029 | ||
7030 | /* Note that BUFCNT can be negative, indicating sticky | |
7031 | error. */ | |
7032 | if (rs->remote_desc->bufcnt != 0) | |
7033 | return true; | |
7034 | } | |
7035 | return false; | |
7036 | } | |
7037 | ||
c906108c | 7038 | \f |
43ff13b4 | 7039 | |
74531fed PA |
7040 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
7041 | thread, all threads of a remote process, or all threads of all | |
7042 | processes. */ | |
7043 | ||
6b8edb51 PA |
7044 | void |
7045 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
7046 | { |
7047 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
7048 | char *p = rs->buf.data (); |
7049 | char *endp = p + get_remote_packet_size (); | |
74531fed | 7050 | |
1192f124 SM |
7051 | /* If any thread that needs to stop was resumed but pending a vCont |
7052 | resume, generate a phony stop_reply. However, first check | |
7053 | whether the thread wasn't resumed with a signal. Generating a | |
7054 | phony stop in that case would result in losing the signal. */ | |
7055 | bool needs_commit = false; | |
7056 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
7057 | { | |
7058 | remote_thread_info *remote_thr = get_remote_thread_info (tp); | |
7059 | ||
7060 | if (remote_thr->get_resume_state () | |
7061 | == resume_state::RESUMED_PENDING_VCONT) | |
7062 | { | |
7063 | const resumed_pending_vcont_info &info | |
7064 | = remote_thr->resumed_pending_vcont_info (); | |
7065 | if (info.sig != GDB_SIGNAL_0) | |
7066 | { | |
7067 | /* This signal must be forwarded to the inferior. We | |
7068 | could commit-resume just this thread, but its simpler | |
7069 | to just commit-resume everything. */ | |
7070 | needs_commit = true; | |
7071 | break; | |
7072 | } | |
7073 | } | |
7074 | } | |
7075 | ||
7076 | if (needs_commit) | |
7077 | commit_resumed (); | |
7078 | else | |
7079 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
7080 | { | |
7081 | remote_thread_info *remote_thr = get_remote_thread_info (tp); | |
7082 | ||
7083 | if (remote_thr->get_resume_state () | |
7084 | == resume_state::RESUMED_PENDING_VCONT) | |
7085 | { | |
7086 | remote_debug_printf ("Enqueueing phony stop reply for thread pending " | |
96bbe3ef TT |
7087 | "vCont-resume (%d, %ld, %s)", tp->ptid.pid(), |
7088 | tp->ptid.lwp (), | |
7089 | pulongest (tp->ptid.tid ())); | |
1192f124 SM |
7090 | |
7091 | /* Check that the thread wasn't resumed with a signal. | |
7092 | Generating a phony stop would result in losing the | |
7093 | signal. */ | |
7094 | const resumed_pending_vcont_info &info | |
7095 | = remote_thr->resumed_pending_vcont_info (); | |
7096 | gdb_assert (info.sig == GDB_SIGNAL_0); | |
7097 | ||
7098 | stop_reply *sr = new stop_reply (); | |
7099 | sr->ptid = tp->ptid; | |
7100 | sr->rs = rs; | |
183be222 | 7101 | sr->ws.set_stopped (GDB_SIGNAL_0); |
1192f124 SM |
7102 | sr->arch = tp->inf->gdbarch; |
7103 | sr->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
7104 | sr->watch_data_address = 0; | |
7105 | sr->core = 0; | |
7106 | this->push_stop_reply (sr); | |
7107 | ||
7108 | /* Pretend that this thread was actually resumed on the | |
7109 | remote target, then stopped. If we leave it in the | |
7110 | RESUMED_PENDING_VCONT state and the commit_resumed | |
7111 | method is called while the stop reply is still in the | |
7112 | queue, we'll end up reporting a stop event to the core | |
7113 | for that thread while it is running on the remote | |
7114 | target... that would be bad. */ | |
7115 | remote_thr->set_resumed (); | |
7116 | } | |
7117 | } | |
7118 | ||
5b6d1e4f PA |
7119 | /* FIXME: This supports_vCont_probed check is a workaround until |
7120 | packet_support is per-connection. */ | |
ff52c073 | 7121 | if (m_features.packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN |
5b6d1e4f | 7122 | || !rs->supports_vCont_probed) |
6b8edb51 | 7123 | remote_vcont_probe (); |
74531fed | 7124 | |
d458bd84 | 7125 | if (!rs->supports_vCont.t) |
74531fed PA |
7126 | error (_("Remote server does not support stopping threads")); |
7127 | ||
d7e15655 | 7128 | if (ptid == minus_one_ptid |
ff52c073 | 7129 | || (!m_features.remote_multi_process_p () && ptid.is_pid ())) |
74531fed PA |
7130 | p += xsnprintf (p, endp - p, "vCont;t"); |
7131 | else | |
7132 | { | |
7133 | ptid_t nptid; | |
7134 | ||
74531fed PA |
7135 | p += xsnprintf (p, endp - p, "vCont;t:"); |
7136 | ||
0e998d96 | 7137 | if (ptid.is_pid ()) |
74531fed | 7138 | /* All (-1) threads of process. */ |
184ea2f7 | 7139 | nptid = ptid_t (ptid.pid (), -1); |
74531fed PA |
7140 | else |
7141 | { | |
7142 | /* Small optimization: if we already have a stop reply for | |
7143 | this thread, no use in telling the stub we want this | |
7144 | stopped. */ | |
7145 | if (peek_stop_reply (ptid)) | |
7146 | return; | |
7147 | ||
7148 | nptid = ptid; | |
7149 | } | |
7150 | ||
a9cbf802 | 7151 | write_ptid (p, endp, nptid); |
74531fed PA |
7152 | } |
7153 | ||
7154 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
7155 | come in asynchronously by notification. */ | |
7156 | putpkt (rs->buf); | |
8d64371b TT |
7157 | getpkt (&rs->buf, 0); |
7158 | if (strcmp (rs->buf.data (), "OK") != 0) | |
a068643d | 7159 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid).c_str (), |
8d64371b | 7160 | rs->buf.data ()); |
74531fed PA |
7161 | } |
7162 | ||
bfedc46a PA |
7163 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
7164 | interrupt the remote target. It is undefined which thread of which | |
7165 | process reports the interrupt. */ | |
74531fed | 7166 | |
6b8edb51 PA |
7167 | void |
7168 | remote_target::remote_interrupt_as () | |
74531fed PA |
7169 | { |
7170 | struct remote_state *rs = get_remote_state (); | |
7171 | ||
3a29589a DJ |
7172 | rs->ctrlc_pending_p = 1; |
7173 | ||
74531fed | 7174 | /* If the inferior is stopped already, but the core didn't know |
4f626cad | 7175 | about it yet, just ignore the request. The pending stop events |
74531fed | 7176 | will be collected in remote_wait. */ |
4f626cad | 7177 | if (stop_reply_queue_length () > 0) |
74531fed PA |
7178 | return; |
7179 | ||
9a7071a8 JB |
7180 | /* Send interrupt_sequence to remote target. */ |
7181 | send_interrupt_sequence (); | |
74531fed PA |
7182 | } |
7183 | ||
de979965 PA |
7184 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
7185 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
7186 | reports the interrupt. Throws an error if the packet is not |
7187 | supported by the server. */ | |
de979965 | 7188 | |
6b8edb51 PA |
7189 | void |
7190 | remote_target::remote_interrupt_ns () | |
de979965 PA |
7191 | { |
7192 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
7193 | char *p = rs->buf.data (); |
7194 | char *endp = p + get_remote_packet_size (); | |
de979965 PA |
7195 | |
7196 | xsnprintf (p, endp - p, "vCtrlC"); | |
7197 | ||
7198 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
7199 | come in asynchronously by notification. */ | |
7200 | putpkt (rs->buf); | |
8d64371b | 7201 | getpkt (&rs->buf, 0); |
de979965 | 7202 | |
ff52c073 | 7203 | switch (m_features.packet_ok (rs->buf, PACKET_vCtrlC)) |
de979965 PA |
7204 | { |
7205 | case PACKET_OK: | |
7206 | break; | |
7207 | case PACKET_UNKNOWN: | |
e42de8c7 | 7208 | error (_("No support for interrupting the remote target.")); |
de979965 | 7209 | case PACKET_ERROR: |
8d64371b | 7210 | error (_("Interrupting target failed: %s"), rs->buf.data ()); |
de979965 | 7211 | } |
de979965 PA |
7212 | } |
7213 | ||
bfedc46a | 7214 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 7215 | |
f6ac5f3d PA |
7216 | void |
7217 | remote_target::stop (ptid_t ptid) | |
c906108c | 7218 | { |
2189c312 | 7219 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
c906108c | 7220 | |
6efcd9a8 | 7221 | if (target_is_non_stop_p ()) |
74531fed | 7222 | remote_stop_ns (ptid); |
c906108c | 7223 | else |
bfedc46a PA |
7224 | { |
7225 | /* We don't currently have a way to transparently pause the | |
7226 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 7227 | remote_interrupt_as (); |
bfedc46a PA |
7228 | } |
7229 | } | |
7230 | ||
7231 | /* Implement the to_interrupt function for the remote targets. */ | |
7232 | ||
f6ac5f3d PA |
7233 | void |
7234 | remote_target::interrupt () | |
bfedc46a | 7235 | { |
2189c312 | 7236 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
bfedc46a | 7237 | |
e42de8c7 PA |
7238 | if (target_is_non_stop_p ()) |
7239 | remote_interrupt_ns (); | |
bfedc46a | 7240 | else |
e42de8c7 | 7241 | remote_interrupt_as (); |
c906108c SS |
7242 | } |
7243 | ||
93692b58 PA |
7244 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
7245 | ||
f6ac5f3d PA |
7246 | void |
7247 | remote_target::pass_ctrlc () | |
93692b58 | 7248 | { |
2189c312 | 7249 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
93692b58 | 7250 | |
2189c312 | 7251 | struct remote_state *rs = get_remote_state (); |
93692b58 PA |
7252 | |
7253 | /* If we're starting up, we're not fully synced yet. Quit | |
7254 | immediately. */ | |
7255 | if (rs->starting_up) | |
7256 | quit (); | |
7257 | /* If ^C has already been sent once, offer to disconnect. */ | |
7258 | else if (rs->ctrlc_pending_p) | |
7259 | interrupt_query (); | |
7260 | else | |
e671cd59 | 7261 | target_interrupt (); |
93692b58 PA |
7262 | } |
7263 | ||
c906108c SS |
7264 | /* Ask the user what to do when an interrupt is received. */ |
7265 | ||
6b8edb51 PA |
7266 | void |
7267 | remote_target::interrupt_query () | |
c906108c | 7268 | { |
abc56d60 | 7269 | struct remote_state *rs = get_remote_state (); |
c906108c | 7270 | |
abc56d60 | 7271 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 7272 | { |
abc56d60 PA |
7273 | if (query (_("The target is not responding to interrupt requests.\n" |
7274 | "Stop debugging it? "))) | |
74531fed | 7275 | { |
5b6d1e4f | 7276 | remote_unpush_target (this); |
abc56d60 | 7277 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
7278 | } |
7279 | } | |
abc56d60 PA |
7280 | else |
7281 | { | |
7282 | if (query (_("Interrupted while waiting for the program.\n" | |
7283 | "Give up waiting? "))) | |
7284 | quit (); | |
7285 | } | |
c906108c SS |
7286 | } |
7287 | ||
6426a772 JM |
7288 | /* Enable/disable target terminal ownership. Most targets can use |
7289 | terminal groups to control terminal ownership. Remote targets are | |
7290 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 7291 | is required. */ |
6426a772 | 7292 | |
f6ac5f3d PA |
7293 | void |
7294 | remote_target::terminal_inferior () | |
6426a772 | 7295 | { |
6426a772 JM |
7296 | /* NOTE: At this point we could also register our selves as the |
7297 | recipient of all input. Any characters typed could then be | |
23860348 | 7298 | passed on down to the target. */ |
6426a772 JM |
7299 | } |
7300 | ||
f6ac5f3d PA |
7301 | void |
7302 | remote_target::terminal_ours () | |
6426a772 | 7303 | { |
6426a772 JM |
7304 | } |
7305 | ||
176a6961 | 7306 | static void |
05be00a8 | 7307 | remote_console_output (const char *msg) |
c906108c | 7308 | { |
05be00a8 | 7309 | const char *p; |
c906108c | 7310 | |
c5aa993b | 7311 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
7312 | { |
7313 | char tb[2]; | |
7314 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 7315 | |
c906108c SS |
7316 | tb[0] = c; |
7317 | tb[1] = 0; | |
da5bd37e | 7318 | gdb_stdtarg->puts (tb); |
c906108c | 7319 | } |
da5bd37e | 7320 | gdb_stdtarg->flush (); |
00db5b94 | 7321 | } |
74531fed | 7322 | |
221e1a37 PA |
7323 | /* Return the length of the stop reply queue. */ |
7324 | ||
6b8edb51 PA |
7325 | int |
7326 | remote_target::stop_reply_queue_length () | |
221e1a37 | 7327 | { |
6b8edb51 | 7328 | remote_state *rs = get_remote_state (); |
953edf2b | 7329 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
7330 | } |
7331 | ||
cb8c24b6 | 7332 | static void |
6b8edb51 | 7333 | remote_notif_stop_parse (remote_target *remote, |
42938c1a | 7334 | const notif_client *self, const char *buf, |
722247f1 YQ |
7335 | struct notif_event *event) |
7336 | { | |
6b8edb51 | 7337 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
7338 | } |
7339 | ||
7340 | static void | |
6b8edb51 | 7341 | remote_notif_stop_ack (remote_target *remote, |
42938c1a | 7342 | const notif_client *self, const char *buf, |
722247f1 YQ |
7343 | struct notif_event *event) |
7344 | { | |
7345 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
7346 | ||
7347 | /* acknowledge */ | |
6b8edb51 | 7348 | putpkt (remote, self->ack_command); |
722247f1 | 7349 | |
b0083dd7 PA |
7350 | /* Kind can be TARGET_WAITKIND_IGNORE if we have meanwhile discarded |
7351 | the notification. It was left in the queue because we need to | |
7352 | acknowledge it and pull the rest of the notifications out. */ | |
183be222 | 7353 | if (stop_reply->ws.kind () != TARGET_WAITKIND_IGNORE) |
b0083dd7 | 7354 | remote->push_stop_reply (stop_reply); |
722247f1 YQ |
7355 | } |
7356 | ||
7357 | static int | |
6b8edb51 | 7358 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
42938c1a | 7359 | const notif_client *self) |
722247f1 YQ |
7360 | { |
7361 | /* We can't get pending events in remote_notif_process for | |
7362 | notification stop, and we have to do this in remote_wait_ns | |
7363 | instead. If we fetch all queued events from stub, remote stub | |
7364 | may exit and we have no chance to process them back in | |
7365 | remote_wait_ns. */ | |
6b8edb51 PA |
7366 | remote_state *rs = remote->get_remote_state (); |
7367 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
722247f1 YQ |
7368 | return 0; |
7369 | } | |
7370 | ||
32603266 | 7371 | stop_reply::~stop_reply () |
722247f1 | 7372 | { |
32603266 TT |
7373 | for (cached_reg_t ® : regcache) |
7374 | xfree (reg.data); | |
722247f1 YQ |
7375 | } |
7376 | ||
32603266 TT |
7377 | static notif_event_up |
7378 | remote_notif_stop_alloc_reply () | |
722247f1 | 7379 | { |
32603266 | 7380 | return notif_event_up (new struct stop_reply ()); |
722247f1 YQ |
7381 | } |
7382 | ||
7383 | /* A client of notification Stop. */ | |
7384 | ||
42938c1a | 7385 | const notif_client notif_client_stop = |
722247f1 YQ |
7386 | { |
7387 | "Stop", | |
7388 | "vStopped", | |
7389 | remote_notif_stop_parse, | |
7390 | remote_notif_stop_ack, | |
7391 | remote_notif_stop_can_get_pending_events, | |
7392 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 7393 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
7394 | }; |
7395 | ||
cbb8991c DB |
7396 | /* If CONTEXT contains any fork child threads that have not been |
7397 | reported yet, remove them from the CONTEXT list. If such a | |
7398 | thread exists it is because we are stopped at a fork catchpoint | |
7399 | and have not yet called follow_fork, which will set up the | |
7400 | host-side data structures for the new process. */ | |
7401 | ||
6b8edb51 PA |
7402 | void |
7403 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c | 7404 | { |
42938c1a | 7405 | const notif_client *notif = ¬if_client_stop; |
cbb8991c DB |
7406 | |
7407 | /* For any threads stopped at a fork event, remove the corresponding | |
7408 | fork child threads from the CONTEXT list. */ | |
5b6d1e4f | 7409 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c | 7410 | { |
28561a65 SM |
7411 | const target_waitstatus *ws = thread_pending_fork_status (thread); |
7412 | ||
7413 | if (ws == nullptr) | |
7414 | continue; | |
cbb8991c | 7415 | |
28561a65 | 7416 | context->remove_thread (ws->child_ptid ()); |
cbb8991c DB |
7417 | } |
7418 | ||
7419 | /* Check for any pending fork events (not reported or processed yet) | |
7420 | in process PID and remove those fork child threads from the | |
7421 | CONTEXT list as well. */ | |
7422 | remote_notif_get_pending_events (notif); | |
953edf2b | 7423 | for (auto &event : get_remote_state ()->stop_reply_queue) |
183be222 | 7424 | if (event->ws.kind () == TARGET_WAITKIND_FORKED |
3890f02a | 7425 | || event->ws.kind () == TARGET_WAITKIND_VFORKED) |
183be222 | 7426 | context->remove_thread (event->ws.child_ptid ()); |
3890f02a SM |
7427 | else if (event->ws.kind () == TARGET_WAITKIND_THREAD_EXITED) |
7428 | context->remove_thread (event->ptid); | |
85ad3aaf PA |
7429 | } |
7430 | ||
2f63ec5c AB |
7431 | /* Check whether any event pending in the vStopped queue would prevent a |
7432 | global or process wildcard vCont action. Set *may_global_wildcard to | |
7433 | false if we can't do a global wildcard (vCont;c), and clear the event | |
7434 | inferior's may_wildcard_vcont flag if we can't do a process-wide | |
7435 | wildcard resume (vCont;c:pPID.-1). */ | |
85ad3aaf | 7436 | |
6b8edb51 PA |
7437 | void |
7438 | remote_target::check_pending_events_prevent_wildcard_vcont | |
2f63ec5c | 7439 | (bool *may_global_wildcard) |
85ad3aaf | 7440 | { |
42938c1a | 7441 | const notif_client *notif = ¬if_client_stop; |
85ad3aaf PA |
7442 | |
7443 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7444 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7445 | { | |
183be222 SM |
7446 | if (event->ws.kind () == TARGET_WAITKIND_NO_RESUMED |
7447 | || event->ws.kind () == TARGET_WAITKIND_NO_HISTORY) | |
953edf2b | 7448 | continue; |
85ad3aaf | 7449 | |
183be222 SM |
7450 | if (event->ws.kind () == TARGET_WAITKIND_FORKED |
7451 | || event->ws.kind () == TARGET_WAITKIND_VFORKED) | |
2f63ec5c | 7452 | *may_global_wildcard = false; |
722247f1 | 7453 | |
953edf2b TT |
7454 | /* This may be the first time we heard about this process. |
7455 | Regardless, we must not do a global wildcard resume, otherwise | |
7456 | we'd resume this process too. */ | |
2f63ec5c | 7457 | *may_global_wildcard = false; |
323fd5b9 PA |
7458 | if (event->ptid != null_ptid) |
7459 | { | |
7460 | inferior *inf = find_inferior_ptid (this, event->ptid); | |
7461 | if (inf != NULL) | |
7462 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
7463 | } | |
722247f1 | 7464 | } |
722247f1 YQ |
7465 | } |
7466 | ||
f48ff2a7 | 7467 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7468 | |
6b8edb51 PA |
7469 | void |
7470 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7471 | { |
f48ff2a7 YQ |
7472 | struct stop_reply *reply; |
7473 | struct remote_state *rs = get_remote_state (); | |
7474 | struct remote_notif_state *rns = rs->notif_state; | |
7475 | ||
7476 | /* This function can be notified when an inferior exists. When the | |
7477 | target is not remote, the notification state is NULL. */ | |
7478 | if (rs->remote_desc == NULL) | |
7479 | return; | |
7480 | ||
7481 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7482 | |
74531fed | 7483 | /* Discard the in-flight notification. */ |
e99b03dc | 7484 | if (reply != NULL && reply->ptid.pid () == inf->pid) |
74531fed | 7485 | { |
b0083dd7 PA |
7486 | /* Leave the notification pending, since the server expects that |
7487 | we acknowledge it with vStopped. But clear its contents, so | |
7488 | that later on when we acknowledge it, we also discard it. */ | |
df5ad102 SM |
7489 | remote_debug_printf |
7490 | ("discarding in-flight notification: ptid: %s, ws: %s\n", | |
7491 | reply->ptid.to_string().c_str(), | |
7492 | reply->ws.to_string ().c_str ()); | |
183be222 | 7493 | reply->ws.set_ignore (); |
74531fed | 7494 | } |
c906108c | 7495 | |
74531fed PA |
7496 | /* Discard the stop replies we have already pulled with |
7497 | vStopped. */ | |
953edf2b TT |
7498 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7499 | rs->stop_reply_queue.end (), | |
7500 | [=] (const stop_reply_up &event) | |
7501 | { | |
7502 | return event->ptid.pid () == inf->pid; | |
7503 | }); | |
df5ad102 SM |
7504 | for (auto it = iter; it != rs->stop_reply_queue.end (); ++it) |
7505 | remote_debug_printf | |
7506 | ("discarding queued stop reply: ptid: %s, ws: %s\n", | |
7507 | reply->ptid.to_string().c_str(), | |
7508 | reply->ws.to_string ().c_str ()); | |
953edf2b | 7509 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); |
bcc75809 YQ |
7510 | } |
7511 | ||
7512 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7513 | |
6b8edb51 PA |
7514 | void |
7515 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7516 | { |
6b8edb51 | 7517 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7518 | |
f48ff2a7 YQ |
7519 | /* Discard the stop replies we have already pulled with |
7520 | vStopped. */ | |
953edf2b TT |
7521 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7522 | rs->stop_reply_queue.end (), | |
7523 | [=] (const stop_reply_up &event) | |
7524 | { | |
7525 | return event->rs == rs; | |
7526 | }); | |
7527 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7528 | } |
43ff13b4 | 7529 | |
722247f1 YQ |
7530 | /* Remove the first reply in 'stop_reply_queue' which matches |
7531 | PTID. */ | |
2e9f7625 | 7532 | |
6b8edb51 PA |
7533 | struct stop_reply * |
7534 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7535 | { |
953edf2b | 7536 | remote_state *rs = get_remote_state (); |
722247f1 | 7537 | |
953edf2b TT |
7538 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7539 | rs->stop_reply_queue.end (), | |
7540 | [=] (const stop_reply_up &event) | |
7541 | { | |
7542 | return event->ptid.matches (ptid); | |
7543 | }); | |
7544 | struct stop_reply *result; | |
7545 | if (iter == rs->stop_reply_queue.end ()) | |
7546 | result = nullptr; | |
7547 | else | |
7548 | { | |
7549 | result = iter->release (); | |
7550 | rs->stop_reply_queue.erase (iter); | |
7551 | } | |
722247f1 | 7552 | |
722247f1 | 7553 | if (notif_debug) |
6cb06a8c TT |
7554 | gdb_printf (gdb_stdlog, |
7555 | "notif: discard queued event: 'Stop' in %s\n", | |
7556 | ptid.to_string ().c_str ()); | |
a744cf53 | 7557 | |
953edf2b | 7558 | return result; |
74531fed | 7559 | } |
75c99385 | 7560 | |
74531fed PA |
7561 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7562 | remove it from the queue, and return it. Returns NULL if none is | |
7563 | found. If there are still queued events left to process, tell the | |
7564 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7565 | |
6b8edb51 PA |
7566 | struct stop_reply * |
7567 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7568 | { |
953edf2b | 7569 | remote_state *rs = get_remote_state (); |
722247f1 | 7570 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7571 | |
4f626cad | 7572 | if (!rs->stop_reply_queue.empty () && target_can_async_p ()) |
6b8edb51 | 7573 | { |
6b8edb51 PA |
7574 | /* There's still at least an event left. */ |
7575 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
7576 | } | |
74531fed | 7577 | |
722247f1 | 7578 | return r; |
74531fed PA |
7579 | } |
7580 | ||
7581 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7582 | know that we now have at least one queued event left to pass to the | |
7583 | core side, tell the event loop to get back to target_wait soon. */ | |
7584 | ||
6b8edb51 PA |
7585 | void |
7586 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7587 | { |
6b8edb51 | 7588 | remote_state *rs = get_remote_state (); |
953edf2b | 7589 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7590 | |
722247f1 | 7591 | if (notif_debug) |
6cb06a8c TT |
7592 | gdb_printf (gdb_stdlog, |
7593 | "notif: push 'Stop' %s to queue %d\n", | |
7594 | new_event->ptid.to_string ().c_str (), | |
7595 | int (rs->stop_reply_queue.size ())); | |
74531fed | 7596 | |
4f626cad AB |
7597 | /* Mark the pending event queue only if async mode is currently enabled. |
7598 | If async mode is not currently enabled, then, if it later becomes | |
7599 | enabled, and there are events in this queue, we will mark the event | |
7600 | token at that point, see remote_target::async. */ | |
7601 | if (target_is_async_p ()) | |
7602 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
74531fed PA |
7603 | } |
7604 | ||
7605 | /* Returns true if we have a stop reply for PTID. */ | |
7606 | ||
6b8edb51 PA |
7607 | int |
7608 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7609 | { |
6b8edb51 | 7610 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7611 | for (auto &event : rs->stop_reply_queue) |
7612 | if (ptid == event->ptid | |
183be222 | 7613 | && event->ws.kind () == TARGET_WAITKIND_STOPPED) |
953edf2b TT |
7614 | return 1; |
7615 | return 0; | |
74531fed PA |
7616 | } |
7617 | ||
26d56a93 SL |
7618 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7619 | starting with P and ending with PEND matches PREFIX. */ | |
7620 | ||
7621 | static int | |
7622 | strprefix (const char *p, const char *pend, const char *prefix) | |
7623 | { | |
7624 | for ( ; p < pend; p++, prefix++) | |
7625 | if (*p != *prefix) | |
7626 | return 0; | |
7627 | return *prefix == '\0'; | |
7628 | } | |
7629 | ||
74531fed PA |
7630 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7631 | result is stored in EVENT, or throws an error. */ | |
7632 | ||
6b8edb51 | 7633 | void |
bb277751 | 7634 | remote_target::remote_parse_stop_reply (const char *buf, stop_reply *event) |
74531fed | 7635 | { |
5cd63fda | 7636 | remote_arch_state *rsa = NULL; |
74531fed | 7637 | ULONGEST addr; |
256642e8 | 7638 | const char *p; |
94585166 | 7639 | int skipregs = 0; |
74531fed PA |
7640 | |
7641 | event->ptid = null_ptid; | |
bcc75809 | 7642 | event->rs = get_remote_state (); |
183be222 | 7643 | event->ws.set_ignore (); |
f7e6eed5 | 7644 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
32603266 | 7645 | event->regcache.clear (); |
dc146f7c | 7646 | event->core = -1; |
74531fed PA |
7647 | |
7648 | switch (buf[0]) | |
7649 | { | |
7650 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7651 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7652 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7653 | ss = signal number | |
7654 | n... = register number | |
7655 | r... = register contents | |
7656 | */ | |
7657 | ||
7658 | p = &buf[3]; /* after Txx */ | |
7659 | while (*p) | |
7660 | { | |
256642e8 | 7661 | const char *p1; |
cea39f65 | 7662 | int fieldsize; |
43ff13b4 | 7663 | |
1f10ba14 PA |
7664 | p1 = strchr (p, ':'); |
7665 | if (p1 == NULL) | |
7666 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7667 | Packet: '%s'\n"), | |
7668 | p, buf); | |
7669 | if (p == p1) | |
7670 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7671 | Packet: '%s'\n"), | |
7672 | p, buf); | |
3c3bea1c | 7673 | |
1f10ba14 PA |
7674 | /* Some "registers" are actually extended stop information. |
7675 | Note if you're adding a new entry here: GDB 7.9 and | |
7676 | earlier assume that all register "numbers" that start | |
7677 | with an hex digit are real register numbers. Make sure | |
7678 | the server only sends such a packet if it knows the | |
7679 | client understands it. */ | |
c8e38a49 | 7680 | |
26d56a93 | 7681 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7682 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7683 | else if (strprefix (p, p1, "syscall_entry")) |
7684 | { | |
7685 | ULONGEST sysno; | |
7686 | ||
82075af2 | 7687 | p = unpack_varlen_hex (++p1, &sysno); |
183be222 | 7688 | event->ws.set_syscall_entry ((int) sysno); |
82075af2 JS |
7689 | } |
7690 | else if (strprefix (p, p1, "syscall_return")) | |
7691 | { | |
7692 | ULONGEST sysno; | |
7693 | ||
82075af2 | 7694 | p = unpack_varlen_hex (++p1, &sysno); |
183be222 | 7695 | event->ws.set_syscall_return ((int) sysno); |
82075af2 | 7696 | } |
26d56a93 SL |
7697 | else if (strprefix (p, p1, "watch") |
7698 | || strprefix (p, p1, "rwatch") | |
7699 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7700 | { |
f7e6eed5 | 7701 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7702 | p = unpack_varlen_hex (++p1, &addr); |
7703 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7704 | } |
26d56a93 | 7705 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7706 | { |
7707 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7708 | ||
7709 | /* Make sure the stub doesn't forget to indicate support | |
7710 | with qSupported. */ | |
ff52c073 CS |
7711 | if (m_features.packet_support (PACKET_swbreak_feature) |
7712 | != PACKET_ENABLE) | |
f7e6eed5 PA |
7713 | error (_("Unexpected swbreak stop reason")); |
7714 | ||
7715 | /* The value part is documented as "must be empty", | |
7716 | though we ignore it, in case we ever decide to make | |
7717 | use of it in a backward compatible way. */ | |
8424cc97 | 7718 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7719 | } |
26d56a93 | 7720 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7721 | { |
7722 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7723 | ||
7724 | /* Make sure the stub doesn't forget to indicate support | |
7725 | with qSupported. */ | |
ff52c073 CS |
7726 | if (m_features.packet_support (PACKET_hwbreak_feature) |
7727 | != PACKET_ENABLE) | |
f7e6eed5 PA |
7728 | error (_("Unexpected hwbreak stop reason")); |
7729 | ||
7730 | /* See above. */ | |
8424cc97 | 7731 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7732 | } |
26d56a93 | 7733 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7734 | { |
183be222 | 7735 | event->ws.set_loaded (); |
8424cc97 | 7736 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7737 | } |
26d56a93 | 7738 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 | 7739 | { |
183be222 | 7740 | event->ws.set_no_history (); |
1f10ba14 PA |
7741 | /* p1 will indicate "begin" or "end", but it makes |
7742 | no difference for now, so ignore it. */ | |
8424cc97 | 7743 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7744 | } |
26d56a93 | 7745 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7746 | { |
7747 | ULONGEST c; | |
a744cf53 | 7748 | |
1f10ba14 PA |
7749 | p = unpack_varlen_hex (++p1, &c); |
7750 | event->core = c; | |
cea39f65 | 7751 | } |
26d56a93 | 7752 | else if (strprefix (p, p1, "fork")) |
183be222 | 7753 | event->ws.set_forked (read_ptid (++p1, &p)); |
26d56a93 | 7754 | else if (strprefix (p, p1, "vfork")) |
183be222 | 7755 | event->ws.set_vforked (read_ptid (++p1, &p)); |
26d56a93 | 7756 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb | 7757 | { |
183be222 | 7758 | event->ws.set_vfork_done (); |
8424cc97 | 7759 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7760 | } |
6ab24463 | 7761 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7762 | { |
7763 | ULONGEST ignored; | |
94585166 DB |
7764 | int pathlen; |
7765 | ||
7766 | /* Determine the length of the execd pathname. */ | |
7767 | p = unpack_varlen_hex (++p1, &ignored); | |
7768 | pathlen = (p - p1) / 2; | |
7769 | ||
7770 | /* Save the pathname for event reporting and for | |
7771 | the next run command. */ | |
183be222 | 7772 | gdb::unique_xmalloc_ptr<char> pathname |
c6321f19 TT |
7773 | ((char *) xmalloc (pathlen + 1)); |
7774 | hex2bin (p1, (gdb_byte *) pathname.get (), pathlen); | |
183be222 | 7775 | pathname.get ()[pathlen] = '\0'; |
94585166 DB |
7776 | |
7777 | /* This is freed during event handling. */ | |
183be222 | 7778 | event->ws.set_execd (std::move (pathname)); |
94585166 DB |
7779 | |
7780 | /* Skip the registers included in this packet, since | |
7781 | they may be for an architecture different from the | |
7782 | one used by the original program. */ | |
7783 | skipregs = 1; | |
7784 | } | |
65706a29 PA |
7785 | else if (strprefix (p, p1, "create")) |
7786 | { | |
183be222 | 7787 | event->ws.set_thread_created (); |
8424cc97 | 7788 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7789 | } |
cea39f65 MS |
7790 | else |
7791 | { | |
1f10ba14 | 7792 | ULONGEST pnum; |
256642e8 | 7793 | const char *p_temp; |
1f10ba14 | 7794 | |
94585166 DB |
7795 | if (skipregs) |
7796 | { | |
8424cc97 | 7797 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7798 | p++; |
7799 | continue; | |
7800 | } | |
7801 | ||
1f10ba14 PA |
7802 | /* Maybe a real ``P'' register number. */ |
7803 | p_temp = unpack_varlen_hex (p, &pnum); | |
7804 | /* If the first invalid character is the colon, we got a | |
7805 | register number. Otherwise, it's an unknown stop | |
7806 | reason. */ | |
7807 | if (p_temp == p1) | |
7808 | { | |
5cd63fda PA |
7809 | /* If we haven't parsed the event's thread yet, find |
7810 | it now, in order to find the architecture of the | |
7811 | reported expedited registers. */ | |
7812 | if (event->ptid == null_ptid) | |
7813 | { | |
24ed6739 AB |
7814 | /* If there is no thread-id information then leave |
7815 | the event->ptid as null_ptid. Later in | |
7816 | process_stop_reply we will pick a suitable | |
7817 | thread. */ | |
5cd63fda PA |
7818 | const char *thr = strstr (p1 + 1, ";thread:"); |
7819 | if (thr != NULL) | |
7820 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7821 | NULL); | |
5cd63fda PA |
7822 | } |
7823 | ||
7824 | if (rsa == NULL) | |
7825 | { | |
5b6d1e4f PA |
7826 | inferior *inf |
7827 | = (event->ptid == null_ptid | |
7828 | ? NULL | |
7829 | : find_inferior_ptid (this, event->ptid)); | |
5cd63fda PA |
7830 | /* If this is the first time we learn anything |
7831 | about this process, skip the registers | |
7832 | included in this packet, since we don't yet | |
7833 | know which architecture to use to parse them. | |
7834 | We'll determine the architecture later when | |
7835 | we process the stop reply and retrieve the | |
7836 | target description, via | |
7837 | remote_notice_new_inferior -> | |
7838 | post_create_inferior. */ | |
7839 | if (inf == NULL) | |
7840 | { | |
7841 | p = strchrnul (p1 + 1, ';'); | |
7842 | p++; | |
7843 | continue; | |
7844 | } | |
7845 | ||
7846 | event->arch = inf->gdbarch; | |
9d6eea31 | 7847 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7848 | } |
7849 | ||
7850 | packet_reg *reg | |
7851 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7852 | cached_reg_t cached_reg; |
43ff13b4 | 7853 | |
1f10ba14 PA |
7854 | if (reg == NULL) |
7855 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7856 | Packet: '%s'\n"), |
1f10ba14 | 7857 | hex_string (pnum), p, buf); |
c8e38a49 | 7858 | |
1f10ba14 | 7859 | cached_reg.num = reg->regnum; |
d1dff226 | 7860 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7861 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7862 | |
1f10ba14 PA |
7863 | p = p1 + 1; |
7864 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7865 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7866 | p += 2 * fieldsize; |
5cd63fda | 7867 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7868 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7869 | |
32603266 | 7870 | event->regcache.push_back (cached_reg); |
1f10ba14 PA |
7871 | } |
7872 | else | |
7873 | { | |
7874 | /* Not a number. Silently skip unknown optional | |
7875 | info. */ | |
8424cc97 | 7876 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7877 | } |
cea39f65 | 7878 | } |
c8e38a49 | 7879 | |
cea39f65 MS |
7880 | if (*p != ';') |
7881 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7882 | buf, p); | |
7883 | ++p; | |
7884 | } | |
5b5596ff | 7885 | |
183be222 | 7886 | if (event->ws.kind () != TARGET_WAITKIND_IGNORE) |
5b5596ff PA |
7887 | break; |
7888 | ||
c8e38a49 PA |
7889 | /* fall through */ |
7890 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7891 | { |
7892 | int sig; | |
7893 | ||
3a09da41 PA |
7894 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); |
7895 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
183be222 | 7896 | event->ws.set_stopped ((enum gdb_signal) sig); |
3a09da41 | 7897 | else |
183be222 | 7898 | event->ws.set_stopped (GDB_SIGNAL_UNKNOWN); |
3a09da41 | 7899 | } |
c8e38a49 | 7900 | break; |
65706a29 PA |
7901 | case 'w': /* Thread exited. */ |
7902 | { | |
65706a29 PA |
7903 | ULONGEST value; |
7904 | ||
65706a29 | 7905 | p = unpack_varlen_hex (&buf[1], &value); |
183be222 | 7906 | event->ws.set_thread_exited (value); |
65706a29 PA |
7907 | if (*p != ';') |
7908 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7909 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7910 | break; |
7911 | } | |
c8e38a49 PA |
7912 | case 'W': /* Target exited. */ |
7913 | case 'X': | |
7914 | { | |
c8e38a49 | 7915 | ULONGEST value; |
82f73884 | 7916 | |
c8e38a49 PA |
7917 | /* GDB used to accept only 2 hex chars here. Stubs should |
7918 | only send more if they detect GDB supports multi-process | |
7919 | support. */ | |
7920 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7921 | |
c8e38a49 PA |
7922 | if (buf[0] == 'W') |
7923 | { | |
7924 | /* The remote process exited. */ | |
183be222 | 7925 | event->ws.set_exited (value); |
c8e38a49 PA |
7926 | } |
7927 | else | |
7928 | { | |
7929 | /* The remote process exited with a signal. */ | |
3a09da41 | 7930 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
183be222 | 7931 | event->ws.set_signalled ((enum gdb_signal) value); |
3a09da41 | 7932 | else |
183be222 | 7933 | event->ws.set_signalled (GDB_SIGNAL_UNKNOWN); |
c8e38a49 | 7934 | } |
82f73884 | 7935 | |
e7af6c70 TBA |
7936 | /* If no process is specified, return null_ptid, and let the |
7937 | caller figure out the right process to use. */ | |
7938 | int pid = 0; | |
c8e38a49 PA |
7939 | if (*p == '\0') |
7940 | ; | |
7941 | else if (*p == ';') | |
7942 | { | |
7943 | p++; | |
7944 | ||
0b24eb2d | 7945 | if (*p == '\0') |
82f73884 | 7946 | ; |
61012eef | 7947 | else if (startswith (p, "process:")) |
82f73884 | 7948 | { |
c8e38a49 | 7949 | ULONGEST upid; |
a744cf53 | 7950 | |
c8e38a49 PA |
7951 | p += sizeof ("process:") - 1; |
7952 | unpack_varlen_hex (p, &upid); | |
7953 | pid = upid; | |
82f73884 PA |
7954 | } |
7955 | else | |
7956 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7957 | } |
c8e38a49 PA |
7958 | else |
7959 | error (_("unknown stop reply packet: %s"), buf); | |
f2907e49 | 7960 | event->ptid = ptid_t (pid); |
74531fed PA |
7961 | } |
7962 | break; | |
f2faf941 | 7963 | case 'N': |
183be222 | 7964 | event->ws.set_no_resumed (); |
f2faf941 PA |
7965 | event->ptid = minus_one_ptid; |
7966 | break; | |
74531fed | 7967 | } |
74531fed PA |
7968 | } |
7969 | ||
722247f1 YQ |
7970 | /* When the stub wants to tell GDB about a new notification reply, it |
7971 | sends a notification (%Stop, for example). Those can come it at | |
7972 | any time, hence, we have to make sure that any pending | |
7973 | putpkt/getpkt sequence we're making is finished, before querying | |
7974 | the stub for more events with the corresponding ack command | |
7975 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7976 | immediately upon receiving the notification, something like this | |
7977 | could happen: | |
74531fed PA |
7978 | |
7979 | 1.1) --> Hg 1 | |
7980 | 1.2) <-- OK | |
7981 | 1.3) --> g | |
7982 | 1.4) <-- %Stop | |
7983 | 1.5) --> vStopped | |
7984 | 1.6) <-- (registers reply to step #1.3) | |
7985 | ||
7986 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7987 | query. | |
7988 | ||
796cb314 | 7989 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7990 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7991 | doing whatever we were doing: | |
7992 | ||
7993 | 2.1) --> Hg 1 | |
7994 | 2.2) <-- OK | |
7995 | 2.3) --> g | |
7996 | 2.4) <-- %Stop | |
7997 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7998 | 2.5) <-- (registers reply to step #2.3) | |
7999 | ||
85102364 | 8000 | Eventually after step #2.5, we return to the event loop, which |
74531fed PA |
8001 | notices there's an event on the |
8002 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
8003 | associated callback --- the function below. At this point, we're | |
8004 | always safe to start a vStopped sequence. : | |
8005 | ||
8006 | 2.6) --> vStopped | |
8007 | 2.7) <-- T05 thread:2 | |
8008 | 2.8) --> vStopped | |
8009 | 2.9) --> OK | |
8010 | */ | |
8011 | ||
722247f1 | 8012 | void |
42938c1a | 8013 | remote_target::remote_notif_get_pending_events (const notif_client *nc) |
74531fed PA |
8014 | { |
8015 | struct remote_state *rs = get_remote_state (); | |
74531fed | 8016 | |
f48ff2a7 | 8017 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 8018 | { |
722247f1 | 8019 | if (notif_debug) |
6cb06a8c TT |
8020 | gdb_printf (gdb_stdlog, |
8021 | "notif: process: '%s' ack pending event\n", | |
8022 | nc->name); | |
74531fed | 8023 | |
722247f1 | 8024 | /* acknowledge */ |
8d64371b TT |
8025 | nc->ack (this, nc, rs->buf.data (), |
8026 | rs->notif_state->pending_event[nc->id]); | |
f48ff2a7 | 8027 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
8028 | |
8029 | while (1) | |
8030 | { | |
8d64371b TT |
8031 | getpkt (&rs->buf, 0); |
8032 | if (strcmp (rs->buf.data (), "OK") == 0) | |
74531fed PA |
8033 | break; |
8034 | else | |
8d64371b | 8035 | remote_notif_ack (this, nc, rs->buf.data ()); |
74531fed PA |
8036 | } |
8037 | } | |
722247f1 YQ |
8038 | else |
8039 | { | |
8040 | if (notif_debug) | |
6cb06a8c TT |
8041 | gdb_printf (gdb_stdlog, |
8042 | "notif: process: '%s' no pending reply\n", | |
8043 | nc->name); | |
722247f1 | 8044 | } |
74531fed PA |
8045 | } |
8046 | ||
6b8edb51 PA |
8047 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
8048 | avoid having to export the whole remote_target class. */ | |
8049 | ||
8050 | void | |
42938c1a | 8051 | remote_notif_get_pending_events (remote_target *remote, const notif_client *nc) |
6b8edb51 PA |
8052 | { |
8053 | remote->remote_notif_get_pending_events (nc); | |
8054 | } | |
8055 | ||
8f66807b AB |
8056 | /* Called from process_stop_reply when the stop packet we are responding |
8057 | to didn't include a process-id or thread-id. STATUS is the stop event | |
8058 | we are responding to. | |
8059 | ||
8060 | It is the task of this function to select a suitable thread (or process) | |
8061 | and return its ptid, this is the thread (or process) we will assume the | |
8062 | stop event came from. | |
8063 | ||
8064 | In some cases there isn't really any choice about which thread (or | |
8065 | process) is selected, a basic remote with a single process containing a | |
8066 | single thread might choose not to send any process-id or thread-id in | |
8067 | its stop packets, this function will select and return the one and only | |
8068 | thread. | |
8069 | ||
8070 | However, if a target supports multiple threads (or processes) and still | |
8071 | doesn't include a thread-id (or process-id) in its stop packet then | |
8072 | first, this is a badly behaving target, and second, we're going to have | |
8073 | to select a thread (or process) at random and use that. This function | |
8074 | will print a warning to the user if it detects that there is the | |
8075 | possibility that GDB is guessing which thread (or process) to | |
8076 | report. | |
8077 | ||
8078 | Note that this is called before GDB fetches the updated thread list from the | |
8079 | target. So it's possible for the stop reply to be ambiguous and for GDB to | |
8080 | not realize it. For example, if there's initially one thread, the target | |
8081 | spawns a second thread, and then sends a stop reply without an id that | |
8082 | concerns the first thread. GDB will assume the stop reply is about the | |
8083 | first thread - the only thread it knows about - without printing a warning. | |
8084 | Anyway, if the remote meant for the stop reply to be about the second thread, | |
8085 | then it would be really broken, because GDB doesn't know about that thread | |
8086 | yet. */ | |
74531fed | 8087 | |
6b8edb51 | 8088 | ptid_t |
8f66807b | 8089 | remote_target::select_thread_for_ambiguous_stop_reply |
c272a98c | 8090 | (const target_waitstatus &status) |
74531fed | 8091 | { |
4351271e AB |
8092 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
8093 | ||
8f66807b AB |
8094 | /* Some stop events apply to all threads in an inferior, while others |
8095 | only apply to a single thread. */ | |
8096 | bool process_wide_stop | |
c272a98c SM |
8097 | = (status.kind () == TARGET_WAITKIND_EXITED |
8098 | || status.kind () == TARGET_WAITKIND_SIGNALLED); | |
74531fed | 8099 | |
4351271e AB |
8100 | remote_debug_printf ("process_wide_stop = %d", process_wide_stop); |
8101 | ||
8f66807b AB |
8102 | thread_info *first_resumed_thread = nullptr; |
8103 | bool ambiguous = false; | |
74531fed | 8104 | |
8f66807b AB |
8105 | /* Consider all non-exited threads of the target, find the first resumed |
8106 | one. */ | |
8107 | for (thread_info *thr : all_non_exited_threads (this)) | |
24ed6739 | 8108 | { |
8f66807b | 8109 | remote_thread_info *remote_thr = get_remote_thread_info (thr); |
cada5fc9 | 8110 | |
a6c11cbb | 8111 | if (remote_thr->get_resume_state () != resume_state::RESUMED) |
8f66807b | 8112 | continue; |
24ed6739 | 8113 | |
8f66807b AB |
8114 | if (first_resumed_thread == nullptr) |
8115 | first_resumed_thread = thr; | |
8116 | else if (!process_wide_stop | |
8117 | || first_resumed_thread->ptid.pid () != thr->ptid.pid ()) | |
8118 | ambiguous = true; | |
8119 | } | |
8120 | ||
b622494e AB |
8121 | gdb_assert (first_resumed_thread != nullptr); |
8122 | ||
4351271e AB |
8123 | remote_debug_printf ("first resumed thread is %s", |
8124 | pid_to_str (first_resumed_thread->ptid).c_str ()); | |
8125 | remote_debug_printf ("is this guess ambiguous? = %d", ambiguous); | |
8126 | ||
8f66807b AB |
8127 | /* Warn if the remote target is sending ambiguous stop replies. */ |
8128 | if (ambiguous) | |
8129 | { | |
8130 | static bool warned = false; | |
8131 | ||
8132 | if (!warned) | |
8133 | { | |
8134 | /* If you are seeing this warning then the remote target has | |
8135 | stopped without specifying a thread-id, but the target | |
8136 | does have multiple threads (or inferiors), and so GDB is | |
8137 | having to guess which thread stopped. | |
8138 | ||
8139 | Examples of what might cause this are the target sending | |
8140 | and 'S' stop packet, or a 'T' stop packet and not | |
8141 | including a thread-id. | |
8142 | ||
8143 | Additionally, the target might send a 'W' or 'X packet | |
8144 | without including a process-id, when the target has | |
8145 | multiple running inferiors. */ | |
8146 | if (process_wide_stop) | |
8147 | warning (_("multi-inferior target stopped without " | |
8148 | "sending a process-id, using first " | |
8149 | "non-exited inferior")); | |
cada5fc9 | 8150 | else |
8f66807b AB |
8151 | warning (_("multi-threaded target stopped without " |
8152 | "sending a thread-id, using first " | |
8153 | "non-exited thread")); | |
8154 | warned = true; | |
24ed6739 | 8155 | } |
24ed6739 | 8156 | } |
74531fed | 8157 | |
8f66807b AB |
8158 | /* If this is a stop for all threads then don't use a particular threads |
8159 | ptid, instead create a new ptid where only the pid field is set. */ | |
8160 | if (process_wide_stop) | |
8161 | return ptid_t (first_resumed_thread->ptid.pid ()); | |
8162 | else | |
8163 | return first_resumed_thread->ptid; | |
8164 | } | |
8165 | ||
8166 | /* Called when it is decided that STOP_REPLY holds the info of the | |
8167 | event that is to be returned to the core. This function always | |
8168 | destroys STOP_REPLY. */ | |
8169 | ||
8170 | ptid_t | |
8171 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
8172 | struct target_waitstatus *status) | |
8173 | { | |
8174 | *status = stop_reply->ws; | |
8175 | ptid_t ptid = stop_reply->ptid; | |
8176 | ||
8177 | /* If no thread/process was reported by the stub then select a suitable | |
8178 | thread/process. */ | |
8179 | if (ptid == null_ptid) | |
c272a98c | 8180 | ptid = select_thread_for_ambiguous_stop_reply (*status); |
8f66807b AB |
8181 | gdb_assert (ptid != null_ptid); |
8182 | ||
183be222 SM |
8183 | if (status->kind () != TARGET_WAITKIND_EXITED |
8184 | && status->kind () != TARGET_WAITKIND_SIGNALLED | |
8185 | && status->kind () != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 8186 | { |
5f3563ea | 8187 | /* Expedited registers. */ |
32603266 | 8188 | if (!stop_reply->regcache.empty ()) |
5f3563ea | 8189 | { |
217f1f79 | 8190 | struct regcache *regcache |
5b6d1e4f | 8191 | = get_thread_arch_regcache (this, ptid, stop_reply->arch); |
5f3563ea | 8192 | |
32603266 TT |
8193 | for (cached_reg_t ® : stop_reply->regcache) |
8194 | { | |
8195 | regcache->raw_supply (reg.num, reg.data); | |
8196 | xfree (reg.data); | |
8197 | } | |
d1dff226 | 8198 | |
32603266 | 8199 | stop_reply->regcache.clear (); |
5f3563ea | 8200 | } |
74531fed | 8201 | |
8a82de58 | 8202 | remote_notice_new_inferior (ptid, false); |
5b6d1e4f | 8203 | remote_thread_info *remote_thr = get_remote_thread_info (this, ptid); |
799a2abe PA |
8204 | remote_thr->core = stop_reply->core; |
8205 | remote_thr->stop_reason = stop_reply->stop_reason; | |
8206 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
c9d22089 SM |
8207 | |
8208 | if (target_is_non_stop_p ()) | |
8209 | { | |
8210 | /* If the target works in non-stop mode, a stop-reply indicates that | |
8211 | only this thread stopped. */ | |
8212 | remote_thr->set_not_resumed (); | |
8213 | } | |
8214 | else | |
8215 | { | |
8216 | /* If the target works in all-stop mode, a stop-reply indicates that | |
8217 | all the target's threads stopped. */ | |
8218 | for (thread_info *tp : all_non_exited_threads (this)) | |
8219 | get_remote_thread_info (tp)->set_not_resumed (); | |
8220 | } | |
74531fed PA |
8221 | } |
8222 | ||
32603266 | 8223 | delete stop_reply; |
74531fed PA |
8224 | return ptid; |
8225 | } | |
8226 | ||
8227 | /* The non-stop mode version of target_wait. */ | |
8228 | ||
6b8edb51 | 8229 | ptid_t |
b60cea74 TT |
8230 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, |
8231 | target_wait_flags options) | |
74531fed PA |
8232 | { |
8233 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
8234 | struct stop_reply *stop_reply; |
8235 | int ret; | |
fee9eda9 | 8236 | int is_notif = 0; |
74531fed PA |
8237 | |
8238 | /* If in non-stop mode, get out of getpkt even if a | |
8239 | notification is received. */ | |
8240 | ||
8d64371b | 8241 | ret = getpkt_or_notif_sane (&rs->buf, 0 /* forever */, &is_notif); |
74531fed PA |
8242 | while (1) |
8243 | { | |
fee9eda9 | 8244 | if (ret != -1 && !is_notif) |
74531fed PA |
8245 | switch (rs->buf[0]) |
8246 | { | |
8247 | case 'E': /* Error of some sort. */ | |
8248 | /* We're out of sync with the target now. Did it continue | |
8249 | or not? We can't tell which thread it was in non-stop, | |
8250 | so just ignore this. */ | |
8d64371b | 8251 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
74531fed PA |
8252 | break; |
8253 | case 'O': /* Console output. */ | |
8d64371b | 8254 | remote_console_output (&rs->buf[1]); |
74531fed PA |
8255 | break; |
8256 | default: | |
8d64371b | 8257 | warning (_("Invalid remote reply: %s"), rs->buf.data ()); |
74531fed PA |
8258 | break; |
8259 | } | |
8260 | ||
8261 | /* Acknowledge a pending stop reply that may have arrived in the | |
8262 | mean time. */ | |
f48ff2a7 | 8263 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 8264 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
8265 | |
8266 | /* If indeed we noticed a stop reply, we're done. */ | |
8267 | stop_reply = queued_stop_reply (ptid); | |
8268 | if (stop_reply != NULL) | |
8269 | return process_stop_reply (stop_reply, status); | |
8270 | ||
47608cb1 | 8271 | /* Still no event. If we're just polling for an event, then |
74531fed | 8272 | return to the event loop. */ |
47608cb1 | 8273 | if (options & TARGET_WNOHANG) |
74531fed | 8274 | { |
183be222 | 8275 | status->set_ignore (); |
74531fed PA |
8276 | return minus_one_ptid; |
8277 | } | |
8278 | ||
47608cb1 | 8279 | /* Otherwise do a blocking wait. */ |
8d64371b | 8280 | ret = getpkt_or_notif_sane (&rs->buf, 1 /* forever */, &is_notif); |
74531fed PA |
8281 | } |
8282 | } | |
8283 | ||
31ba933e PA |
8284 | /* Return the first resumed thread. */ |
8285 | ||
8286 | static ptid_t | |
5b6d1e4f | 8287 | first_remote_resumed_thread (remote_target *target) |
31ba933e | 8288 | { |
5b6d1e4f | 8289 | for (thread_info *tp : all_non_exited_threads (target, minus_one_ptid)) |
7846f3aa | 8290 | if (tp->resumed ()) |
31ba933e PA |
8291 | return tp->ptid; |
8292 | return null_ptid; | |
8293 | } | |
8294 | ||
74531fed PA |
8295 | /* Wait until the remote machine stops, then return, storing status in |
8296 | STATUS just as `wait' would. */ | |
8297 | ||
6b8edb51 | 8298 | ptid_t |
b60cea74 TT |
8299 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, |
8300 | target_wait_flags options) | |
74531fed PA |
8301 | { |
8302 | struct remote_state *rs = get_remote_state (); | |
74531fed | 8303 | ptid_t event_ptid = null_ptid; |
cea39f65 | 8304 | char *buf; |
74531fed PA |
8305 | struct stop_reply *stop_reply; |
8306 | ||
47608cb1 PA |
8307 | again: |
8308 | ||
183be222 | 8309 | status->set_ignore (); |
74531fed PA |
8310 | |
8311 | stop_reply = queued_stop_reply (ptid); | |
8312 | if (stop_reply != NULL) | |
4f626cad AB |
8313 | { |
8314 | /* None of the paths that push a stop reply onto the queue should | |
8315 | have set the waiting_for_stop_reply flag. */ | |
8316 | gdb_assert (!rs->waiting_for_stop_reply); | |
8317 | event_ptid = process_stop_reply (stop_reply, status); | |
8318 | } | |
74531fed PA |
8319 | else |
8320 | { | |
567420d1 | 8321 | int forever = ((options & TARGET_WNOHANG) == 0 |
6b8edb51 | 8322 | && rs->wait_forever_enabled_p); |
567420d1 PA |
8323 | |
8324 | if (!rs->waiting_for_stop_reply) | |
8325 | { | |
183be222 | 8326 | status->set_no_resumed (); |
567420d1 PA |
8327 | return minus_one_ptid; |
8328 | } | |
74531fed | 8329 | |
74531fed PA |
8330 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
8331 | _never_ wait for ever -> test on target_is_async_p(). | |
8332 | However, before we do that we need to ensure that the caller | |
8333 | knows how to take the target into/out of async mode. */ | |
4f626cad AB |
8334 | int is_notif; |
8335 | int ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif); | |
722247f1 YQ |
8336 | |
8337 | /* GDB gets a notification. Return to core as this event is | |
8338 | not interesting. */ | |
8339 | if (ret != -1 && is_notif) | |
8340 | return minus_one_ptid; | |
567420d1 PA |
8341 | |
8342 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
8343 | return minus_one_ptid; | |
74531fed | 8344 | |
4f626cad | 8345 | buf = rs->buf.data (); |
74531fed | 8346 | |
4f626cad AB |
8347 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
8348 | an 'F' or 'O' packet. */ | |
8349 | if (buf[0] != 'F' && buf[0] != 'O') | |
8350 | rs->ctrlc_pending_p = 0; | |
3a29589a | 8351 | |
4f626cad AB |
8352 | switch (buf[0]) |
8353 | { | |
8354 | case 'E': /* Error of some sort. */ | |
8355 | /* We're out of sync with the target now. Did it continue or | |
8356 | not? Not is more likely, so report a stop. */ | |
8357 | rs->waiting_for_stop_reply = 0; | |
29090fb6 | 8358 | |
4f626cad AB |
8359 | warning (_("Remote failure reply: %s"), buf); |
8360 | status->set_stopped (GDB_SIGNAL_0); | |
8361 | break; | |
8362 | case 'F': /* File-I/O request. */ | |
8363 | /* GDB may access the inferior memory while handling the File-I/O | |
8364 | request, but we don't want GDB accessing memory while waiting | |
8365 | for a stop reply. See the comments in putpkt_binary. Set | |
8366 | waiting_for_stop_reply to 0 temporarily. */ | |
8367 | rs->waiting_for_stop_reply = 0; | |
8368 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); | |
8369 | rs->ctrlc_pending_p = 0; | |
8370 | /* GDB handled the File-I/O request, and the target is running | |
8371 | again. Keep waiting for events. */ | |
8372 | rs->waiting_for_stop_reply = 1; | |
8373 | break; | |
8374 | case 'N': case 'T': case 'S': case 'X': case 'W': | |
8375 | { | |
8376 | /* There is a stop reply to handle. */ | |
8377 | rs->waiting_for_stop_reply = 0; | |
29090fb6 | 8378 | |
4f626cad AB |
8379 | stop_reply |
8380 | = (struct stop_reply *) remote_notif_parse (this, | |
8381 | ¬if_client_stop, | |
8382 | rs->buf.data ()); | |
74531fed | 8383 | |
4f626cad AB |
8384 | event_ptid = process_stop_reply (stop_reply, status); |
8385 | break; | |
8386 | } | |
8387 | case 'O': /* Console output. */ | |
8388 | remote_console_output (buf + 1); | |
8389 | break; | |
8390 | case '\0': | |
8391 | if (rs->last_sent_signal != GDB_SIGNAL_0) | |
8392 | { | |
8393 | /* Zero length reply means that we tried 'S' or 'C' and the | |
8394 | remote system doesn't support it. */ | |
8395 | target_terminal::ours_for_output (); | |
6cb06a8c | 8396 | gdb_printf |
4f626cad AB |
8397 | ("Can't send signals to this remote system. %s not sent.\n", |
8398 | gdb_signal_to_name (rs->last_sent_signal)); | |
8399 | rs->last_sent_signal = GDB_SIGNAL_0; | |
8400 | target_terminal::inferior (); | |
8401 | ||
8402 | strcpy (buf, rs->last_sent_step ? "s" : "c"); | |
8403 | putpkt (buf); | |
8404 | break; | |
8405 | } | |
8406 | /* fallthrough */ | |
8407 | default: | |
8408 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 8409 | break; |
43ff13b4 JM |
8410 | } |
8411 | } | |
c8e38a49 | 8412 | |
183be222 | 8413 | if (status->kind () == TARGET_WAITKIND_NO_RESUMED) |
f2faf941 | 8414 | return minus_one_ptid; |
183be222 | 8415 | else if (status->kind () == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
8416 | { |
8417 | /* Nothing interesting happened. If we're doing a non-blocking | |
8418 | poll, we're done. Otherwise, go back to waiting. */ | |
8419 | if (options & TARGET_WNOHANG) | |
8420 | return minus_one_ptid; | |
8421 | else | |
8422 | goto again; | |
8423 | } | |
183be222 SM |
8424 | else if (status->kind () != TARGET_WAITKIND_EXITED |
8425 | && status->kind () != TARGET_WAITKIND_SIGNALLED) | |
82f73884 | 8426 | { |
d7e15655 | 8427 | if (event_ptid != null_ptid) |
47f8a51d | 8428 | record_currthread (rs, event_ptid); |
82f73884 | 8429 | else |
5b6d1e4f | 8430 | event_ptid = first_remote_resumed_thread (this); |
43ff13b4 | 8431 | } |
74531fed | 8432 | else |
e7af6c70 TBA |
8433 | { |
8434 | /* A process exit. Invalidate our notion of current thread. */ | |
8435 | record_currthread (rs, minus_one_ptid); | |
8436 | /* It's possible that the packet did not include a pid. */ | |
8437 | if (event_ptid == null_ptid) | |
5b6d1e4f | 8438 | event_ptid = first_remote_resumed_thread (this); |
e7af6c70 TBA |
8439 | /* EVENT_PTID could still be NULL_PTID. Double-check. */ |
8440 | if (event_ptid == null_ptid) | |
8441 | event_ptid = magic_null_ptid; | |
8442 | } | |
79d7f229 | 8443 | |
82f73884 | 8444 | return event_ptid; |
43ff13b4 JM |
8445 | } |
8446 | ||
74531fed PA |
8447 | /* Wait until the remote machine stops, then return, storing status in |
8448 | STATUS just as `wait' would. */ | |
8449 | ||
f6ac5f3d | 8450 | ptid_t |
b60cea74 TT |
8451 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, |
8452 | target_wait_flags options) | |
c8e38a49 | 8453 | { |
2189c312 SM |
8454 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
8455 | ||
baa8575b SM |
8456 | remote_state *rs = get_remote_state (); |
8457 | ||
8458 | /* Start by clearing the flag that asks for our wait method to be called, | |
8d34471f AB |
8459 | we'll mark it again at the end if needed. If the target is not in |
8460 | async mode then the async token should not be marked. */ | |
baa8575b SM |
8461 | if (target_is_async_p ()) |
8462 | clear_async_event_handler (rs->remote_async_inferior_event_token); | |
8d34471f AB |
8463 | else |
8464 | gdb_assert (!async_event_handler_marked | |
8465 | (rs->remote_async_inferior_event_token)); | |
baa8575b | 8466 | |
c8e38a49 PA |
8467 | ptid_t event_ptid; |
8468 | ||
6efcd9a8 | 8469 | if (target_is_non_stop_p ()) |
6b8edb51 | 8470 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 8471 | else |
6b8edb51 | 8472 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 8473 | |
d9d41e78 | 8474 | if (target_is_async_p ()) |
c8e38a49 | 8475 | { |
baa8575b SM |
8476 | /* If there are events left in the queue, or unacknowledged |
8477 | notifications, then tell the event loop to call us again. */ | |
8478 | if (!rs->stop_reply_queue.empty () | |
8479 | || rs->notif_state->pending_event[notif_client_stop.id] != nullptr) | |
6b8edb51 | 8480 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
c8e38a49 | 8481 | } |
c8e38a49 PA |
8482 | |
8483 | return event_ptid; | |
8484 | } | |
8485 | ||
74ca34ce | 8486 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 8487 | |
6b8edb51 PA |
8488 | int |
8489 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
8490 | packet_reg *reg) | |
b96ec7ac | 8491 | { |
ac7936df | 8492 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 8493 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8494 | char *buf, *p; |
9890e433 | 8495 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
8496 | int i; |
8497 | ||
ff52c073 | 8498 | if (m_features.packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
8499 | return 0; |
8500 | ||
8501 | if (reg->pnum == -1) | |
8502 | return 0; | |
8503 | ||
8d64371b | 8504 | p = rs->buf.data (); |
fcad0fa4 | 8505 | *p++ = 'p'; |
74ca34ce | 8506 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 8507 | *p++ = '\0'; |
1f4437a4 | 8508 | putpkt (rs->buf); |
8d64371b | 8509 | getpkt (&rs->buf, 0); |
3f9a994c | 8510 | |
8d64371b | 8511 | buf = rs->buf.data (); |
2e9f7625 | 8512 | |
ff52c073 | 8513 | switch (m_features.packet_ok (rs->buf, PACKET_p)) |
74ca34ce DJ |
8514 | { |
8515 | case PACKET_OK: | |
8516 | break; | |
8517 | case PACKET_UNKNOWN: | |
8518 | return 0; | |
8519 | case PACKET_ERROR: | |
27a9c0bf | 8520 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 8521 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
8522 | reg->regnum), |
8523 | buf); | |
74ca34ce | 8524 | } |
3f9a994c JB |
8525 | |
8526 | /* If this register is unfetchable, tell the regcache. */ | |
8527 | if (buf[0] == 'x') | |
8480adf2 | 8528 | { |
73e1c03f | 8529 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 8530 | return 1; |
b96ec7ac | 8531 | } |
b96ec7ac | 8532 | |
3f9a994c JB |
8533 | /* Otherwise, parse and supply the value. */ |
8534 | p = buf; | |
8535 | i = 0; | |
8536 | while (p[0] != 0) | |
8537 | { | |
8538 | if (p[1] == 0) | |
74ca34ce | 8539 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
8540 | |
8541 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8542 | p += 2; | |
8543 | } | |
73e1c03f | 8544 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 8545 | return 1; |
b96ec7ac AC |
8546 | } |
8547 | ||
74ca34ce DJ |
8548 | /* Fetch the registers included in the target's 'g' packet. */ |
8549 | ||
6b8edb51 PA |
8550 | int |
8551 | remote_target::send_g_packet () | |
c906108c | 8552 | { |
d01949b6 | 8553 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 8554 | int buf_len; |
c906108c | 8555 | |
8d64371b | 8556 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "g"); |
b75abf5b | 8557 | putpkt (rs->buf); |
8d64371b | 8558 | getpkt (&rs->buf, 0); |
b75abf5b AK |
8559 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
8560 | error (_("Could not read registers; remote failure reply '%s'"), | |
dda83cd7 | 8561 | rs->buf.data ()); |
c906108c | 8562 | |
29709017 DJ |
8563 | /* We can get out of synch in various cases. If the first character |
8564 | in the buffer is not a hex character, assume that has happened | |
8565 | and try to fetch another packet to read. */ | |
8566 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
8567 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
8568 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
8569 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
8570 | { | |
2189c312 | 8571 | remote_debug_printf ("Bad register packet; fetching a new packet"); |
8d64371b | 8572 | getpkt (&rs->buf, 0); |
29709017 DJ |
8573 | } |
8574 | ||
8d64371b | 8575 | buf_len = strlen (rs->buf.data ()); |
74ca34ce DJ |
8576 | |
8577 | /* Sanity check the received packet. */ | |
8578 | if (buf_len % 2 != 0) | |
8d64371b | 8579 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf.data ()); |
29709017 DJ |
8580 | |
8581 | return buf_len / 2; | |
8582 | } | |
8583 | ||
6b8edb51 PA |
8584 | void |
8585 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 8586 | { |
ac7936df | 8587 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 8588 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8589 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
8590 | int i, buf_len; |
8591 | char *p; | |
8592 | char *regs; | |
8593 | ||
8d64371b | 8594 | buf_len = strlen (rs->buf.data ()); |
29709017 DJ |
8595 | |
8596 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 8597 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 | 8598 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8d64371b TT |
8599 | "bytes): %s"), |
8600 | rsa->sizeof_g_packet, buf_len / 2, | |
8601 | rs->buf.data ()); | |
74ca34ce DJ |
8602 | |
8603 | /* Save the size of the packet sent to us by the target. It is used | |
8604 | as a heuristic when determining the max size of packets that the | |
8605 | target can safely receive. */ | |
8606 | if (rsa->actual_register_packet_size == 0) | |
8607 | rsa->actual_register_packet_size = buf_len; | |
8608 | ||
8609 | /* If this is smaller than we guessed the 'g' packet would be, | |
8610 | update our records. A 'g' reply that doesn't include a register's | |
8611 | value implies either that the register is not available, or that | |
8612 | the 'p' packet must be used. */ | |
8613 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8614 | { |
9dc193c3 | 8615 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8616 | |
4a22f64d | 8617 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8618 | { |
9dc193c3 LF |
8619 | long offset = rsa->regs[i].offset; |
8620 | long reg_size = register_size (gdbarch, i); | |
8621 | ||
74ca34ce DJ |
8622 | if (rsa->regs[i].pnum == -1) |
8623 | continue; | |
8624 | ||
9dc193c3 | 8625 | if (offset >= sizeof_g_packet) |
74ca34ce | 8626 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8627 | else if (offset + reg_size > sizeof_g_packet) |
8628 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8629 | else |
74ca34ce | 8630 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8631 | } |
9dc193c3 LF |
8632 | |
8633 | /* Looks valid enough, we can assume this is the correct length | |
dda83cd7 SM |
8634 | for a 'g' packet. It's important not to adjust |
8635 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8636 | this "if" won't be run the next time the method is called | |
8637 | with a packet of the same size and one of the internal errors | |
8638 | below will trigger instead. */ | |
9dc193c3 | 8639 | rsa->sizeof_g_packet = sizeof_g_packet; |
74ca34ce | 8640 | } |
b323314b | 8641 | |
224c3ddb | 8642 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8643 | |
8644 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8645 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8646 | |
c906108c SS |
8647 | /* Reply describes registers byte by byte, each byte encoded as two |
8648 | hex characters. Suck them all up, then supply them to the | |
8649 | register cacheing/storage mechanism. */ | |
8650 | ||
8d64371b | 8651 | p = rs->buf.data (); |
ea9c271d | 8652 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8653 | { |
74ca34ce DJ |
8654 | if (p[0] == 0 || p[1] == 0) |
8655 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
f34652de | 8656 | internal_error (_("unexpected end of 'g' packet reply")); |
74ca34ce | 8657 | |
c906108c | 8658 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8659 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8660 | else |
8661 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8662 | p += 2; | |
8663 | } | |
8664 | ||
a744cf53 MS |
8665 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8666 | { | |
8667 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8668 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8669 | |
8670 | if (r->in_g_packet) | |
8671 | { | |
8d64371b | 8672 | if ((r->offset + reg_size) * 2 > strlen (rs->buf.data ())) |
a744cf53 | 8673 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
f34652de | 8674 | internal_error (_("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8675 | else if (rs->buf[r->offset * 2] == 'x') |
8676 | { | |
8d64371b | 8677 | gdb_assert (r->offset * 2 < strlen (rs->buf.data ())); |
a744cf53 MS |
8678 | /* The register isn't available, mark it as such (at |
8679 | the same time setting the value to zero). */ | |
73e1c03f | 8680 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8681 | } |
8682 | else | |
73e1c03f | 8683 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8684 | } |
8685 | } | |
c906108c SS |
8686 | } |
8687 | ||
6b8edb51 PA |
8688 | void |
8689 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8690 | { |
8691 | send_g_packet (); | |
56be3814 | 8692 | process_g_packet (regcache); |
29709017 DJ |
8693 | } |
8694 | ||
e6e4e701 PA |
8695 | /* Make the remote selected traceframe match GDB's selected |
8696 | traceframe. */ | |
8697 | ||
6b8edb51 PA |
8698 | void |
8699 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8700 | { |
8701 | int newnum; | |
262e1174 | 8702 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8703 | |
262e1174 | 8704 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8705 | return; |
8706 | ||
8707 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8708 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8709 | |
8710 | newnum = target_trace_find (tfind_number, | |
8711 | get_traceframe_number (), 0, 0, NULL); | |
8712 | ||
8713 | /* Should not happen. If it does, all bets are off. */ | |
8714 | if (newnum != get_traceframe_number ()) | |
8715 | warning (_("could not set remote traceframe")); | |
8716 | } | |
8717 | ||
f6ac5f3d PA |
8718 | void |
8719 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8720 | { |
ac7936df | 8721 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8722 | struct remote_state *rs = get_remote_state (); |
8723 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8724 | int i; |
8725 | ||
e6e4e701 | 8726 | set_remote_traceframe (); |
222312d3 | 8727 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8728 | |
8729 | if (regnum >= 0) | |
8730 | { | |
5cd63fda | 8731 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8732 | |
74ca34ce DJ |
8733 | gdb_assert (reg != NULL); |
8734 | ||
8735 | /* If this register might be in the 'g' packet, try that first - | |
8736 | we are likely to read more than one register. If this is the | |
8737 | first 'g' packet, we might be overly optimistic about its | |
8738 | contents, so fall back to 'p'. */ | |
8739 | if (reg->in_g_packet) | |
8740 | { | |
56be3814 | 8741 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8742 | if (reg->in_g_packet) |
8743 | return; | |
8744 | } | |
8745 | ||
56be3814 | 8746 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8747 | return; |
8748 | ||
8749 | /* This register is not available. */ | |
73e1c03f | 8750 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8751 | |
8752 | return; | |
8753 | } | |
8754 | ||
56be3814 | 8755 | fetch_registers_using_g (regcache); |
74ca34ce | 8756 | |
5cd63fda | 8757 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8758 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8759 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8760 | { |
8761 | /* This register is not available. */ | |
73e1c03f | 8762 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8763 | } |
8764 | } | |
8765 | ||
c906108c SS |
8766 | /* Prepare to store registers. Since we may send them all (using a |
8767 | 'G' request), we have to read out the ones we don't want to change | |
8768 | first. */ | |
8769 | ||
f6ac5f3d PA |
8770 | void |
8771 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8772 | { |
9d6eea31 PA |
8773 | struct remote_state *rs = get_remote_state (); |
8774 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8775 | int i; |
cf0e1e0d | 8776 | |
c906108c | 8777 | /* Make sure the entire registers array is valid. */ |
ff52c073 | 8778 | switch (m_features.packet_support (PACKET_P)) |
5a2468f5 JM |
8779 | { |
8780 | case PACKET_DISABLE: | |
8781 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8782 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8783 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8784 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8785 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8786 | break; |
8787 | case PACKET_ENABLE: | |
8788 | break; | |
8789 | } | |
8790 | } | |
8791 | ||
ad10f812 | 8792 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8793 | packet was not recognized. */ |
5a2468f5 | 8794 | |
6b8edb51 PA |
8795 | int |
8796 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8797 | packet_reg *reg) | |
5a2468f5 | 8798 | { |
ac7936df | 8799 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8800 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8801 | /* Try storing a single register. */ |
8d64371b | 8802 | char *buf = rs->buf.data (); |
9890e433 | 8803 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8804 | char *p; |
5a2468f5 | 8805 | |
ff52c073 | 8806 | if (m_features.packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8807 | return 0; |
8808 | ||
8809 | if (reg->pnum == -1) | |
8810 | return 0; | |
8811 | ||
ea9c271d | 8812 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8813 | p = buf + strlen (buf); |
34a79281 | 8814 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8815 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 | 8816 | putpkt (rs->buf); |
8d64371b | 8817 | getpkt (&rs->buf, 0); |
5a2468f5 | 8818 | |
ff52c073 | 8819 | switch (m_features.packet_ok (rs->buf, PACKET_P)) |
74ca34ce DJ |
8820 | { |
8821 | case PACKET_OK: | |
8822 | return 1; | |
8823 | case PACKET_ERROR: | |
27a9c0bf | 8824 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8d64371b | 8825 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf.data ()); |
74ca34ce DJ |
8826 | case PACKET_UNKNOWN: |
8827 | return 0; | |
8828 | default: | |
f34652de | 8829 | internal_error (_("Bad result from packet_ok")); |
74ca34ce | 8830 | } |
c906108c SS |
8831 | } |
8832 | ||
23860348 MS |
8833 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8834 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8835 | |
6b8edb51 PA |
8836 | void |
8837 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8838 | { |
d01949b6 | 8839 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8840 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8841 | gdb_byte *regs; |
c906108c SS |
8842 | char *p; |
8843 | ||
193cb69f AC |
8844 | /* Extract all the registers in the regcache copying them into a |
8845 | local buffer. */ | |
8846 | { | |
b323314b | 8847 | int i; |
a744cf53 | 8848 | |
224c3ddb | 8849 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8850 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8851 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8852 | { |
ea9c271d | 8853 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8854 | |
b323314b | 8855 | if (r->in_g_packet) |
34a79281 | 8856 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8857 | } |
8858 | } | |
c906108c SS |
8859 | |
8860 | /* Command describes registers byte by byte, | |
8861 | each byte encoded as two hex characters. */ | |
8d64371b | 8862 | p = rs->buf.data (); |
193cb69f | 8863 | *p++ = 'G'; |
74ca34ce | 8864 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 | 8865 | putpkt (rs->buf); |
8d64371b | 8866 | getpkt (&rs->buf, 0); |
1f4437a4 | 8867 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
27a9c0bf | 8868 | error (_("Could not write registers; remote failure reply '%s'"), |
8d64371b | 8869 | rs->buf.data ()); |
c906108c | 8870 | } |
74ca34ce DJ |
8871 | |
8872 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8873 | of the register cache buffer. FIXME: ignores errors. */ | |
8874 | ||
f6ac5f3d PA |
8875 | void |
8876 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8877 | { |
5cd63fda | 8878 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8879 | struct remote_state *rs = get_remote_state (); |
8880 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8881 | int i; |
8882 | ||
e6e4e701 | 8883 | set_remote_traceframe (); |
222312d3 | 8884 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8885 | |
8886 | if (regnum >= 0) | |
8887 | { | |
5cd63fda | 8888 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8889 | |
74ca34ce DJ |
8890 | gdb_assert (reg != NULL); |
8891 | ||
8892 | /* Always prefer to store registers using the 'P' packet if | |
8893 | possible; we often change only a small number of registers. | |
8894 | Sometimes we change a larger number; we'd need help from a | |
8895 | higher layer to know to use 'G'. */ | |
56be3814 | 8896 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8897 | return; |
8898 | ||
8899 | /* For now, don't complain if we have no way to write the | |
8900 | register. GDB loses track of unavailable registers too | |
8901 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8902 | any way to read the register, either... */ |
74ca34ce DJ |
8903 | if (!reg->in_g_packet) |
8904 | return; | |
8905 | ||
56be3814 | 8906 | store_registers_using_G (regcache); |
74ca34ce DJ |
8907 | return; |
8908 | } | |
8909 | ||
56be3814 | 8910 | store_registers_using_G (regcache); |
74ca34ce | 8911 | |
5cd63fda | 8912 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8913 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8914 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8915 | /* See above for why we do not issue an error here. */ |
8916 | continue; | |
8917 | } | |
c906108c SS |
8918 | \f |
8919 | ||
8920 | /* Return the number of hex digits in num. */ | |
8921 | ||
8922 | static int | |
fba45db2 | 8923 | hexnumlen (ULONGEST num) |
c906108c SS |
8924 | { |
8925 | int i; | |
8926 | ||
8927 | for (i = 0; num != 0; i++) | |
8928 | num >>= 4; | |
8929 | ||
325fac50 | 8930 | return std::max (i, 1); |
c906108c SS |
8931 | } |
8932 | ||
2df3850c | 8933 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8934 | |
8935 | static int | |
fba45db2 | 8936 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8937 | { |
c906108c | 8938 | int len = hexnumlen (num); |
a744cf53 | 8939 | |
2df3850c JM |
8940 | return hexnumnstr (buf, num, len); |
8941 | } | |
8942 | ||
c906108c | 8943 | |
2df3850c | 8944 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8945 | |
2df3850c | 8946 | static int |
fba45db2 | 8947 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8948 | { |
8949 | int i; | |
8950 | ||
8951 | buf[width] = '\0'; | |
8952 | ||
8953 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8954 | { |
c5aa993b | 8955 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8956 | num >>= 4; |
8957 | } | |
8958 | ||
2df3850c | 8959 | return width; |
c906108c SS |
8960 | } |
8961 | ||
23860348 | 8962 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8963 | |
8964 | static CORE_ADDR | |
fba45db2 | 8965 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8966 | { |
883b9c6c | 8967 | unsigned int address_size = remote_address_size; |
a744cf53 | 8968 | |
911c95a5 UW |
8969 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8970 | if (!address_size) | |
f5656ead | 8971 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8972 | |
8973 | if (address_size > 0 | |
8974 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8975 | { |
8976 | /* Only create a mask when that mask can safely be constructed | |
dda83cd7 | 8977 | in a ULONGEST variable. */ |
c906108c | 8978 | ULONGEST mask = 1; |
a744cf53 | 8979 | |
911c95a5 | 8980 | mask = (mask << address_size) - 1; |
c906108c SS |
8981 | addr &= mask; |
8982 | } | |
8983 | return addr; | |
8984 | } | |
8985 | ||
8986 | /* Determine whether the remote target supports binary downloading. | |
8987 | This is accomplished by sending a no-op memory write of zero length | |
8988 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8989 | the whole packet, since many stubs strip the eighth bit and |
8990 | subsequently compute a wrong checksum, which causes real havoc with | |
8991 | remote_write_bytes. | |
7a292a7a | 8992 | |
96baa820 | 8993 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8994 | clean. In cases like this, the user should clear "remote |
23860348 | 8995 | X-packet". */ |
96baa820 | 8996 | |
6b8edb51 PA |
8997 | void |
8998 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 8999 | { |
d01949b6 | 9000 | struct remote_state *rs = get_remote_state (); |
24b06219 | 9001 | |
ff52c073 | 9002 | switch (m_features.packet_support (PACKET_X)) |
c906108c | 9003 | { |
96baa820 JM |
9004 | case PACKET_DISABLE: |
9005 | break; | |
9006 | case PACKET_ENABLE: | |
9007 | break; | |
9008 | case PACKET_SUPPORT_UNKNOWN: | |
9009 | { | |
96baa820 | 9010 | char *p; |
802188a7 | 9011 | |
8d64371b | 9012 | p = rs->buf.data (); |
96baa820 JM |
9013 | *p++ = 'X'; |
9014 | p += hexnumstr (p, (ULONGEST) addr); | |
9015 | *p++ = ','; | |
9016 | p += hexnumstr (p, (ULONGEST) 0); | |
9017 | *p++ = ':'; | |
9018 | *p = '\0'; | |
802188a7 | 9019 | |
8d64371b TT |
9020 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
9021 | getpkt (&rs->buf, 0); | |
c906108c | 9022 | |
2e9f7625 | 9023 | if (rs->buf[0] == '\0') |
96baa820 | 9024 | { |
2189c312 | 9025 | remote_debug_printf ("binary downloading NOT supported by target"); |
ff52c073 | 9026 | m_features.m_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
9027 | } |
9028 | else | |
9029 | { | |
2189c312 | 9030 | remote_debug_printf ("binary downloading supported by target"); |
ff52c073 | 9031 | m_features.m_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
9032 | } |
9033 | break; | |
9034 | } | |
c906108c SS |
9035 | } |
9036 | } | |
9037 | ||
124e13d9 SM |
9038 | /* Helper function to resize the payload in order to try to get a good |
9039 | alignment. We try to write an amount of data such that the next write will | |
9040 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
9041 | ||
9042 | static int | |
9043 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
9044 | { | |
9045 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
9046 | } | |
9047 | ||
c906108c SS |
9048 | /* Write memory data directly to the remote machine. |
9049 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 9050 | HEADER is the starting part of the packet. |
c906108c SS |
9051 | MEMADDR is the address in the remote memory space. |
9052 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
9053 | LEN_UNITS is the number of addressable units to write. |
9054 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
9055 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
9056 | should send data as binary ('X'), or hex-encoded ('M'). | |
9057 | ||
9058 | The function creates packet of the form | |
9059 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
9060 | ||
124e13d9 | 9061 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
9062 | |
9063 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
9064 | are omitted. | |
9065 | ||
9b409511 | 9066 | Return the transferred status, error or OK (an |
124e13d9 SM |
9067 | 'enum target_xfer_status' value). Save the number of addressable units |
9068 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
9069 | ||
9070 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
9071 | exchange between gdb and the stub could look like (?? in place of the | |
9072 | checksum): | |
9073 | ||
9074 | -> $m1000,4#?? | |
9075 | <- aaaabbbbccccdddd | |
9076 | ||
9077 | -> $M1000,3:eeeeffffeeee#?? | |
9078 | <- OK | |
9079 | ||
9080 | -> $m1000,4#?? | |
9081 | <- eeeeffffeeeedddd */ | |
c906108c | 9082 | |
6b8edb51 PA |
9083 | target_xfer_status |
9084 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
9085 | const gdb_byte *myaddr, | |
9086 | ULONGEST len_units, | |
9087 | int unit_size, | |
9088 | ULONGEST *xfered_len_units, | |
9089 | char packet_format, int use_length) | |
c906108c | 9090 | { |
6d820c5c | 9091 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 9092 | char *p; |
a76d924d DJ |
9093 | char *plen = NULL; |
9094 | int plenlen = 0; | |
124e13d9 SM |
9095 | int todo_units; |
9096 | int units_written; | |
9097 | int payload_capacity_bytes; | |
9098 | int payload_length_bytes; | |
a76d924d DJ |
9099 | |
9100 | if (packet_format != 'X' && packet_format != 'M') | |
f34652de | 9101 | internal_error (_("remote_write_bytes_aux: bad packet format")); |
c906108c | 9102 | |
124e13d9 | 9103 | if (len_units == 0) |
9b409511 | 9104 | return TARGET_XFER_EOF; |
b2182ed2 | 9105 | |
124e13d9 | 9106 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 9107 | |
6d820c5c DJ |
9108 | /* The packet buffer will be large enough for the payload; |
9109 | get_memory_packet_size ensures this. */ | |
a76d924d | 9110 | rs->buf[0] = '\0'; |
c906108c | 9111 | |
a257b5bb | 9112 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
9113 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
9114 | ||
124e13d9 | 9115 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 9116 | if (!use_length) |
0df8b418 | 9117 | /* The comma won't be used. */ |
124e13d9 SM |
9118 | payload_capacity_bytes += 1; |
9119 | payload_capacity_bytes -= strlen (header); | |
9120 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 9121 | |
a76d924d | 9122 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 9123 | |
8d64371b TT |
9124 | strcat (rs->buf.data (), header); |
9125 | p = rs->buf.data () + strlen (header); | |
a76d924d DJ |
9126 | |
9127 | /* Compute a best guess of the number of bytes actually transfered. */ | |
9128 | if (packet_format == 'X') | |
c906108c | 9129 | { |
23860348 | 9130 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
9131 | todo_units = std::min (len_units, |
9132 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 9133 | if (use_length) |
124e13d9 | 9134 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 9135 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
9136 | } |
9137 | else | |
9138 | { | |
124e13d9 | 9139 | /* Number of bytes that will fit. */ |
325fac50 PA |
9140 | todo_units |
9141 | = std::min (len_units, | |
9142 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 9143 | if (use_length) |
124e13d9 | 9144 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
9145 | todo_units = std::min (todo_units, |
9146 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 9147 | } |
a76d924d | 9148 | |
124e13d9 | 9149 | if (todo_units <= 0) |
f34652de | 9150 | internal_error (_("minimum packet size too small to write data")); |
802188a7 | 9151 | |
6765f3e5 DJ |
9152 | /* If we already need another packet, then try to align the end |
9153 | of this packet to a useful boundary. */ | |
124e13d9 SM |
9154 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
9155 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 9156 | |
a257b5bb | 9157 | /* Append "<memaddr>". */ |
917317f4 JM |
9158 | memaddr = remote_address_masked (memaddr); |
9159 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 9160 | |
a76d924d DJ |
9161 | if (use_length) |
9162 | { | |
9163 | /* Append ",". */ | |
9164 | *p++ = ','; | |
802188a7 | 9165 | |
124e13d9 | 9166 | /* Append the length and retain its location and size. It may need to be |
dda83cd7 | 9167 | adjusted once the packet body has been created. */ |
a76d924d | 9168 | plen = p; |
124e13d9 | 9169 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
9170 | p += plenlen; |
9171 | } | |
a257b5bb AC |
9172 | |
9173 | /* Append ":". */ | |
917317f4 JM |
9174 | *p++ = ':'; |
9175 | *p = '\0'; | |
802188a7 | 9176 | |
a257b5bb | 9177 | /* Append the packet body. */ |
a76d924d | 9178 | if (packet_format == 'X') |
917317f4 | 9179 | { |
917317f4 JM |
9180 | /* Binary mode. Send target system values byte by byte, in |
9181 | increasing byte addresses. Only escape certain critical | |
9182 | characters. */ | |
124e13d9 SM |
9183 | payload_length_bytes = |
9184 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
9185 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 9186 | |
124e13d9 | 9187 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
9188 | a second try to keep the end of the packet aligned. Don't do |
9189 | this if the packet is tiny. */ | |
124e13d9 | 9190 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 9191 | { |
124e13d9 SM |
9192 | int new_todo_units; |
9193 | ||
9194 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
9195 | ||
9196 | if (new_todo_units != units_written) | |
9197 | payload_length_bytes = | |
9198 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
9199 | (gdb_byte *) p, &units_written, | |
9200 | payload_capacity_bytes); | |
6765f3e5 DJ |
9201 | } |
9202 | ||
124e13d9 SM |
9203 | p += payload_length_bytes; |
9204 | if (use_length && units_written < todo_units) | |
c906108c | 9205 | { |
802188a7 | 9206 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 9207 | and we have actually sent fewer units than planned. |
917317f4 JM |
9208 | Fix-up the length field of the packet. Use the same |
9209 | number of characters as before. */ | |
124e13d9 SM |
9210 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
9211 | plenlen); | |
917317f4 | 9212 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 9213 | } |
a76d924d DJ |
9214 | } |
9215 | else | |
9216 | { | |
917317f4 JM |
9217 | /* Normal mode: Send target system values byte by byte, in |
9218 | increasing byte addresses. Each byte is encoded as a two hex | |
9219 | value. */ | |
124e13d9 SM |
9220 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
9221 | units_written = todo_units; | |
c906108c | 9222 | } |
802188a7 | 9223 | |
8d64371b TT |
9224 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
9225 | getpkt (&rs->buf, 0); | |
802188a7 | 9226 | |
2e9f7625 | 9227 | if (rs->buf[0] == 'E') |
00d84524 | 9228 | return TARGET_XFER_E_IO; |
802188a7 | 9229 | |
124e13d9 SM |
9230 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
9231 | send fewer units than we'd planned. */ | |
9232 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 9233 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
9234 | } |
9235 | ||
a76d924d DJ |
9236 | /* Write memory data directly to the remote machine. |
9237 | This does not inform the data cache; the data cache uses this. | |
9238 | MEMADDR is the address in the remote memory space. | |
9239 | MYADDR is the address of the buffer in our space. | |
9240 | LEN is the number of bytes. | |
9241 | ||
9b409511 YQ |
9242 | Return the transferred status, error or OK (an |
9243 | 'enum target_xfer_status' value). Save the number of bytes | |
9244 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 9245 | |
6b8edb51 PA |
9246 | target_xfer_status |
9247 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
9248 | ULONGEST len, int unit_size, | |
9249 | ULONGEST *xfered_len) | |
a76d924d | 9250 | { |
a121b7c1 | 9251 | const char *packet_format = NULL; |
a76d924d DJ |
9252 | |
9253 | /* Check whether the target supports binary download. */ | |
9254 | check_binary_download (memaddr); | |
9255 | ||
ff52c073 | 9256 | switch (m_features.packet_support (PACKET_X)) |
a76d924d DJ |
9257 | { |
9258 | case PACKET_ENABLE: | |
9259 | packet_format = "X"; | |
9260 | break; | |
9261 | case PACKET_DISABLE: | |
9262 | packet_format = "M"; | |
9263 | break; | |
9264 | case PACKET_SUPPORT_UNKNOWN: | |
f34652de | 9265 | internal_error (_("remote_write_bytes: bad internal state")); |
a76d924d | 9266 | default: |
f34652de | 9267 | internal_error (_("bad switch")); |
a76d924d DJ |
9268 | } |
9269 | ||
9270 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 9271 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 9272 | packet_format[0], 1); |
a76d924d DJ |
9273 | } |
9274 | ||
9217e74e YQ |
9275 | /* Read memory data directly from the remote machine. |
9276 | This does not use the data cache; the data cache uses this. | |
9277 | MEMADDR is the address in the remote memory space. | |
9278 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
9279 | LEN_UNITS is the number of addressable memory units to read.. |
9280 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
9281 | |
9282 | Return the transferred status, error or OK (an | |
9283 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
9284 | transferred in *XFERED_LEN_UNITS. |
9285 | ||
9286 | See the comment of remote_write_bytes_aux for an example of | |
9287 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 9288 | |
6b8edb51 PA |
9289 | target_xfer_status |
9290 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
9291 | ULONGEST len_units, | |
9292 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
9293 | { |
9294 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 9295 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 9296 | char *p; |
124e13d9 SM |
9297 | int todo_units; |
9298 | int decoded_bytes; | |
9217e74e | 9299 | |
124e13d9 | 9300 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
9301 | /* The packet buffer will be large enough for the payload; |
9302 | get_memory_packet_size ensures this. */ | |
9303 | ||
124e13d9 | 9304 | /* Number of units that will fit. */ |
325fac50 PA |
9305 | todo_units = std::min (len_units, |
9306 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
9307 | |
9308 | /* Construct "m"<memaddr>","<len>". */ | |
9309 | memaddr = remote_address_masked (memaddr); | |
8d64371b | 9310 | p = rs->buf.data (); |
9217e74e YQ |
9311 | *p++ = 'm'; |
9312 | p += hexnumstr (p, (ULONGEST) memaddr); | |
9313 | *p++ = ','; | |
124e13d9 | 9314 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
9315 | *p = '\0'; |
9316 | putpkt (rs->buf); | |
8d64371b | 9317 | getpkt (&rs->buf, 0); |
9217e74e YQ |
9318 | if (rs->buf[0] == 'E' |
9319 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
9320 | && rs->buf[3] == '\0') | |
9321 | return TARGET_XFER_E_IO; | |
9322 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
9323 | characters. */ | |
8d64371b | 9324 | p = rs->buf.data (); |
124e13d9 | 9325 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 9326 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 9327 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 9328 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
9329 | } |
9330 | ||
b55fbac4 YQ |
9331 | /* Using the set of read-only target sections of remote, read live |
9332 | read-only memory. | |
8acf9577 YQ |
9333 | |
9334 | For interface/parameters/return description see target.h, | |
9335 | to_xfer_partial. */ | |
9336 | ||
6b8edb51 PA |
9337 | target_xfer_status |
9338 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
9339 | ULONGEST memaddr, | |
9340 | ULONGEST len, | |
9341 | int unit_size, | |
9342 | ULONGEST *xfered_len) | |
8acf9577 | 9343 | { |
19cf757a | 9344 | const struct target_section *secp; |
8acf9577 | 9345 | |
6b8edb51 | 9346 | secp = target_section_by_addr (this, memaddr); |
8acf9577 | 9347 | if (secp != NULL |
fd361982 | 9348 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
8acf9577 | 9349 | { |
8acf9577 YQ |
9350 | ULONGEST memend = memaddr + len; |
9351 | ||
19cf757a AB |
9352 | const target_section_table *table = target_get_section_table (this); |
9353 | for (const target_section &p : *table) | |
8acf9577 | 9354 | { |
bb2a6777 | 9355 | if (memaddr >= p.addr) |
8acf9577 | 9356 | { |
bb2a6777 | 9357 | if (memend <= p.endaddr) |
8acf9577 YQ |
9358 | { |
9359 | /* Entire transfer is within this section. */ | |
124e13d9 | 9360 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9361 | xfered_len); |
8acf9577 | 9362 | } |
bb2a6777 | 9363 | else if (memaddr >= p.endaddr) |
8acf9577 YQ |
9364 | { |
9365 | /* This section ends before the transfer starts. */ | |
9366 | continue; | |
9367 | } | |
9368 | else | |
9369 | { | |
9370 | /* This section overlaps the transfer. Just do half. */ | |
bb2a6777 | 9371 | len = p.endaddr - memaddr; |
124e13d9 | 9372 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9373 | xfered_len); |
8acf9577 YQ |
9374 | } |
9375 | } | |
9376 | } | |
9377 | } | |
9378 | ||
9379 | return TARGET_XFER_EOF; | |
9380 | } | |
9381 | ||
9217e74e YQ |
9382 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
9383 | first if the requested memory is unavailable in traceframe. | |
9384 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 9385 | |
6b8edb51 PA |
9386 | target_xfer_status |
9387 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
9388 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
9389 | ULONGEST *xfered_len) | |
c906108c | 9390 | { |
6b6aa828 | 9391 | if (len == 0) |
96c4f946 | 9392 | return TARGET_XFER_EOF; |
b2182ed2 | 9393 | |
8acf9577 YQ |
9394 | if (get_traceframe_number () != -1) |
9395 | { | |
a79b1bc6 | 9396 | std::vector<mem_range> available; |
8acf9577 YQ |
9397 | |
9398 | /* If we fail to get the set of available memory, then the | |
9399 | target does not support querying traceframe info, and so we | |
9400 | attempt reading from the traceframe anyway (assuming the | |
9401 | target implements the old QTro packet then). */ | |
9402 | if (traceframe_available_memory (&available, memaddr, len)) | |
9403 | { | |
a79b1bc6 | 9404 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
9405 | { |
9406 | enum target_xfer_status res; | |
9407 | ||
9408 | /* Don't read into the traceframe's available | |
9409 | memory. */ | |
a79b1bc6 | 9410 | if (!available.empty ()) |
8acf9577 YQ |
9411 | { |
9412 | LONGEST oldlen = len; | |
9413 | ||
a79b1bc6 | 9414 | len = available[0].start - memaddr; |
8acf9577 YQ |
9415 | gdb_assert (len <= oldlen); |
9416 | } | |
9417 | ||
8acf9577 | 9418 | /* This goes through the topmost target again. */ |
6b8edb51 | 9419 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 9420 | len, unit_size, xfered_len); |
8acf9577 YQ |
9421 | if (res == TARGET_XFER_OK) |
9422 | return TARGET_XFER_OK; | |
9423 | else | |
9424 | { | |
9425 | /* No use trying further, we know some memory starting | |
9426 | at MEMADDR isn't available. */ | |
9427 | *xfered_len = len; | |
92ffd475 PC |
9428 | return (*xfered_len != 0) ? |
9429 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
9430 | } |
9431 | } | |
9432 | ||
9433 | /* Don't try to read more than how much is available, in | |
9434 | case the target implements the deprecated QTro packet to | |
9435 | cater for older GDBs (the target's knowledge of read-only | |
9436 | sections may be outdated by now). */ | |
a79b1bc6 | 9437 | len = available[0].length; |
8acf9577 YQ |
9438 | } |
9439 | } | |
9440 | ||
124e13d9 | 9441 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 9442 | } |
74531fed | 9443 | |
c906108c | 9444 | \f |
c906108c | 9445 | |
a76d924d DJ |
9446 | /* Sends a packet with content determined by the printf format string |
9447 | FORMAT and the remaining arguments, then gets the reply. Returns | |
9448 | whether the packet was a success, a failure, or unknown. */ | |
9449 | ||
6b8edb51 PA |
9450 | packet_result |
9451 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
9452 | { |
9453 | struct remote_state *rs = get_remote_state (); | |
9454 | int max_size = get_remote_packet_size (); | |
a76d924d | 9455 | va_list ap; |
a744cf53 | 9456 | |
a76d924d DJ |
9457 | va_start (ap, format); |
9458 | ||
9459 | rs->buf[0] = '\0'; | |
8d64371b | 9460 | int size = vsnprintf (rs->buf.data (), max_size, format, ap); |
33b031ce GB |
9461 | |
9462 | va_end (ap); | |
9463 | ||
9464 | if (size >= max_size) | |
f34652de | 9465 | internal_error (_("Too long remote packet.")); |
a76d924d DJ |
9466 | |
9467 | if (putpkt (rs->buf) < 0) | |
9468 | error (_("Communication problem with target.")); | |
9469 | ||
9470 | rs->buf[0] = '\0'; | |
8d64371b | 9471 | getpkt (&rs->buf, 0); |
a76d924d DJ |
9472 | |
9473 | return packet_check_result (rs->buf); | |
9474 | } | |
9475 | ||
a76d924d DJ |
9476 | /* Flash writing can take quite some time. We'll set |
9477 | effectively infinite timeout for flash operations. | |
9478 | In future, we'll need to decide on a better approach. */ | |
9479 | static const int remote_flash_timeout = 1000; | |
9480 | ||
f6ac5f3d PA |
9481 | void |
9482 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 9483 | { |
f5656ead | 9484 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 9485 | enum packet_result ret; |
2ec845e7 TT |
9486 | scoped_restore restore_timeout |
9487 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
9488 | |
9489 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 9490 | phex (address, addr_size), |
a76d924d DJ |
9491 | phex (length, 4)); |
9492 | switch (ret) | |
9493 | { | |
9494 | case PACKET_UNKNOWN: | |
9495 | error (_("Remote target does not support flash erase")); | |
9496 | case PACKET_ERROR: | |
9497 | error (_("Error erasing flash with vFlashErase packet")); | |
9498 | default: | |
9499 | break; | |
9500 | } | |
a76d924d DJ |
9501 | } |
9502 | ||
6b8edb51 PA |
9503 | target_xfer_status |
9504 | remote_target::remote_flash_write (ULONGEST address, | |
9505 | ULONGEST length, ULONGEST *xfered_len, | |
9506 | const gdb_byte *data) | |
a76d924d | 9507 | { |
2ec845e7 TT |
9508 | scoped_restore restore_timeout |
9509 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9510 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
9511 | xfered_len,'X', 0); | |
a76d924d DJ |
9512 | } |
9513 | ||
f6ac5f3d PA |
9514 | void |
9515 | remote_target::flash_done () | |
a76d924d | 9516 | { |
a76d924d | 9517 | int ret; |
a76d924d | 9518 | |
2ec845e7 TT |
9519 | scoped_restore restore_timeout |
9520 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9521 | ||
a76d924d | 9522 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
9523 | |
9524 | switch (ret) | |
9525 | { | |
9526 | case PACKET_UNKNOWN: | |
9527 | error (_("Remote target does not support vFlashDone")); | |
9528 | case PACKET_ERROR: | |
9529 | error (_("Error finishing flash operation")); | |
9530 | default: | |
9531 | break; | |
9532 | } | |
9533 | } | |
9534 | ||
c906108c SS |
9535 | \f |
9536 | /* Stuff for dealing with the packets which are part of this protocol. | |
9537 | See comment at top of file for details. */ | |
9538 | ||
1927e618 PA |
9539 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
9540 | error to higher layers. Called when a serial error is detected. | |
9541 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
9542 | the system error message for errno at function entry and final dot |
9543 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
9544 | |
9545 | static void | |
5b6d1e4f | 9546 | unpush_and_perror (remote_target *target, const char *string) |
1927e618 | 9547 | { |
d6cb50a2 | 9548 | int saved_errno = errno; |
1927e618 | 9549 | |
5b6d1e4f | 9550 | remote_unpush_target (target); |
d6cb50a2 JK |
9551 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
9552 | safe_strerror (saved_errno)); | |
1927e618 PA |
9553 | } |
9554 | ||
048094ac PA |
9555 | /* Read a single character from the remote end. The current quit |
9556 | handler is overridden to avoid quitting in the middle of packet | |
9557 | sequence, as that would break communication with the remote server. | |
9558 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 9559 | |
6b8edb51 PA |
9560 | int |
9561 | remote_target::readchar (int timeout) | |
c906108c SS |
9562 | { |
9563 | int ch; | |
5d93a237 | 9564 | struct remote_state *rs = get_remote_state (); |
048094ac | 9565 | |
2ec845e7 | 9566 | { |
6b8edb51 PA |
9567 | scoped_restore restore_quit_target |
9568 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9569 | scoped_restore restore_quit |
6b8edb51 | 9570 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 9571 | |
2ec845e7 | 9572 | rs->got_ctrlc_during_io = 0; |
c906108c | 9573 | |
2ec845e7 | 9574 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 9575 | |
2ec845e7 TT |
9576 | if (rs->got_ctrlc_during_io) |
9577 | set_quit_flag (); | |
9578 | } | |
048094ac | 9579 | |
2acceee2 | 9580 | if (ch >= 0) |
0876f84a | 9581 | return ch; |
2acceee2 JM |
9582 | |
9583 | switch ((enum serial_rc) ch) | |
c906108c SS |
9584 | { |
9585 | case SERIAL_EOF: | |
5b6d1e4f | 9586 | remote_unpush_target (this); |
598d3636 | 9587 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 9588 | /* no return */ |
c906108c | 9589 | case SERIAL_ERROR: |
5b6d1e4f PA |
9590 | unpush_and_perror (this, _("Remote communication error. " |
9591 | "Target disconnected.")); | |
2acceee2 | 9592 | /* no return */ |
c906108c | 9593 | case SERIAL_TIMEOUT: |
2acceee2 | 9594 | break; |
c906108c | 9595 | } |
2acceee2 | 9596 | return ch; |
c906108c SS |
9597 | } |
9598 | ||
c33e31fd | 9599 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9600 | writing fails. The current quit handler is overridden to avoid |
9601 | quitting in the middle of packet sequence, as that would break | |
9602 | communication with the remote server. See | |
9603 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9604 | |
6b8edb51 PA |
9605 | void |
9606 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9607 | { |
5d93a237 | 9608 | struct remote_state *rs = get_remote_state (); |
048094ac | 9609 | |
6b8edb51 PA |
9610 | scoped_restore restore_quit_target |
9611 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9612 | scoped_restore restore_quit |
6b8edb51 | 9613 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9614 | |
9615 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9616 | |
9617 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9618 | { |
5b6d1e4f PA |
9619 | unpush_and_perror (this, _("Remote communication error. " |
9620 | "Target disconnected.")); | |
c33e31fd | 9621 | } |
048094ac PA |
9622 | |
9623 | if (rs->got_ctrlc_during_io) | |
9624 | set_quit_flag (); | |
c33e31fd PA |
9625 | } |
9626 | ||
b3ced9ba PA |
9627 | /* Return a string representing an escaped version of BUF, of len N. |
9628 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9629 | |
b3ced9ba | 9630 | static std::string |
6e5abd65 PA |
9631 | escape_buffer (const char *buf, int n) |
9632 | { | |
d7e74731 | 9633 | string_file stb; |
6e5abd65 | 9634 | |
d7e74731 | 9635 | stb.putstrn (buf, n, '\\'); |
5d10a204 | 9636 | return stb.release (); |
6e5abd65 PA |
9637 | } |
9638 | ||
c906108c | 9639 | int |
6b8edb51 | 9640 | remote_target::putpkt (const char *buf) |
c906108c SS |
9641 | { |
9642 | return putpkt_binary (buf, strlen (buf)); | |
9643 | } | |
9644 | ||
6b8edb51 PA |
9645 | /* Wrapper around remote_target::putpkt to avoid exporting |
9646 | remote_target. */ | |
9647 | ||
9648 | int | |
9649 | putpkt (remote_target *remote, const char *buf) | |
9650 | { | |
9651 | return remote->putpkt (buf); | |
9652 | } | |
9653 | ||
c906108c | 9654 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9655 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9656 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9657 | and for a possible /0 if we are debugging (remote_debug) and want |
9658 | to print the sent packet as a string. */ | |
c906108c | 9659 | |
6b8edb51 PA |
9660 | int |
9661 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9662 | { |
2d717e4f | 9663 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9664 | int i; |
9665 | unsigned char csum = 0; | |
b80406ac TT |
9666 | gdb::def_vector<char> data (cnt + 6); |
9667 | char *buf2 = data.data (); | |
085dd6e6 | 9668 | |
c906108c SS |
9669 | int ch; |
9670 | int tcount = 0; | |
9671 | char *p; | |
9672 | ||
e24a49d8 PA |
9673 | /* Catch cases like trying to read memory or listing threads while |
9674 | we're waiting for a stop reply. The remote server wouldn't be | |
9675 | ready to handle this request, so we'd hang and timeout. We don't | |
9676 | have to worry about this in synchronous mode, because in that | |
9677 | case it's not possible to issue a command while the target is | |
74531fed PA |
9678 | running. This is not a problem in non-stop mode, because in that |
9679 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9680 | if (!target_is_non_stop_p () |
9681 | && target_is_async_p () | |
9682 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9683 | { |
9684 | error (_("Cannot execute this command while the target is running.\n" | |
9685 | "Use the \"interrupt\" command to stop the target\n" | |
9686 | "and then try again.")); | |
9687 | } | |
e24a49d8 | 9688 | |
c906108c SS |
9689 | /* Copy the packet into buffer BUF2, encapsulating it |
9690 | and giving it a checksum. */ | |
9691 | ||
c906108c SS |
9692 | p = buf2; |
9693 | *p++ = '$'; | |
9694 | ||
9695 | for (i = 0; i < cnt; i++) | |
9696 | { | |
9697 | csum += buf[i]; | |
9698 | *p++ = buf[i]; | |
9699 | } | |
9700 | *p++ = '#'; | |
9701 | *p++ = tohex ((csum >> 4) & 0xf); | |
9702 | *p++ = tohex (csum & 0xf); | |
9703 | ||
9704 | /* Send it over and over until we get a positive ack. */ | |
9705 | ||
9706 | while (1) | |
9707 | { | |
c906108c SS |
9708 | if (remote_debug) |
9709 | { | |
9710 | *p = '\0'; | |
b3ced9ba | 9711 | |
6f8976bf | 9712 | int len = (int) (p - buf2); |
6cc8564b LM |
9713 | int max_chars; |
9714 | ||
9715 | if (remote_packet_max_chars < 0) | |
9716 | max_chars = len; | |
9717 | else | |
9718 | max_chars = remote_packet_max_chars; | |
6f8976bf YQ |
9719 | |
9720 | std::string str | |
6cc8564b | 9721 | = escape_buffer (buf2, std::min (len, max_chars)); |
6f8976bf | 9722 | |
6cc8564b | 9723 | if (len > max_chars) |
2189c312 SM |
9724 | remote_debug_printf_nofunc |
9725 | ("Sending packet: %s [%d bytes omitted]", str.c_str (), | |
9726 | len - max_chars); | |
9727 | else | |
9728 | remote_debug_printf_nofunc ("Sending packet: %s", str.c_str ()); | |
c906108c | 9729 | } |
c33e31fd | 9730 | remote_serial_write (buf2, p - buf2); |
c906108c | 9731 | |
a6f3e723 SL |
9732 | /* If this is a no acks version of the remote protocol, send the |
9733 | packet and move on. */ | |
9734 | if (rs->noack_mode) | |
dda83cd7 | 9735 | break; |
a6f3e723 | 9736 | |
74531fed PA |
9737 | /* Read until either a timeout occurs (-2) or '+' is read. |
9738 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9739 | while (1) |
9740 | { | |
9741 | ch = readchar (remote_timeout); | |
9742 | ||
c906108c SS |
9743 | switch (ch) |
9744 | { | |
9745 | case '+': | |
2189c312 | 9746 | remote_debug_printf_nofunc ("Received Ack"); |
c906108c | 9747 | return 1; |
1216fa2c | 9748 | case '-': |
2189c312 | 9749 | remote_debug_printf_nofunc ("Received Nak"); |
a17d146e | 9750 | /* FALLTHROUGH */ |
c906108c | 9751 | case SERIAL_TIMEOUT: |
c5aa993b | 9752 | tcount++; |
c906108c | 9753 | if (tcount > 3) |
b80406ac | 9754 | return 0; |
23860348 | 9755 | break; /* Retransmit buffer. */ |
c906108c SS |
9756 | case '$': |
9757 | { | |
2189c312 | 9758 | remote_debug_printf ("Packet instead of Ack, ignoring it"); |
d6f7abdf AC |
9759 | /* It's probably an old response sent because an ACK |
9760 | was lost. Gobble up the packet and ack it so it | |
9761 | doesn't get retransmitted when we resend this | |
9762 | packet. */ | |
6d820c5c | 9763 | skip_frame (); |
c33e31fd | 9764 | remote_serial_write ("+", 1); |
23860348 | 9765 | continue; /* Now, go look for +. */ |
c906108c | 9766 | } |
74531fed PA |
9767 | |
9768 | case '%': | |
9769 | { | |
9770 | int val; | |
9771 | ||
9772 | /* If we got a notification, handle it, and go back to looking | |
9773 | for an ack. */ | |
9774 | /* We've found the start of a notification. Now | |
9775 | collect the data. */ | |
8d64371b | 9776 | val = read_frame (&rs->buf); |
74531fed PA |
9777 | if (val >= 0) |
9778 | { | |
2189c312 SM |
9779 | remote_debug_printf_nofunc |
9780 | (" Notification received: %s", | |
9781 | escape_buffer (rs->buf.data (), val).c_str ()); | |
6e5abd65 | 9782 | |
8d64371b | 9783 | handle_notification (rs->notif_state, rs->buf.data ()); |
74531fed PA |
9784 | /* We're in sync now, rewait for the ack. */ |
9785 | tcount = 0; | |
9786 | } | |
9787 | else | |
2189c312 SM |
9788 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9789 | rs->buf.data ()); | |
74531fed PA |
9790 | continue; |
9791 | } | |
9792 | /* fall-through */ | |
c906108c | 9793 | default: |
2189c312 SM |
9794 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9795 | rs->buf.data ()); | |
c906108c SS |
9796 | continue; |
9797 | } | |
23860348 | 9798 | break; /* Here to retransmit. */ |
c906108c SS |
9799 | } |
9800 | ||
9801 | #if 0 | |
9802 | /* This is wrong. If doing a long backtrace, the user should be | |
dda83cd7 SM |
9803 | able to get out next time we call QUIT, without anything as |
9804 | violent as interrupt_query. If we want to provide a way out of | |
9805 | here without getting to the next QUIT, it should be based on | |
9806 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9807 | if (quit_flag) |
9808 | { | |
9809 | quit_flag = 0; | |
9810 | interrupt_query (); | |
9811 | } | |
9812 | #endif | |
9813 | } | |
a5c0808e | 9814 | |
a6f3e723 | 9815 | return 0; |
c906108c SS |
9816 | } |
9817 | ||
6d820c5c DJ |
9818 | /* Come here after finding the start of a frame when we expected an |
9819 | ack. Do our best to discard the rest of this packet. */ | |
9820 | ||
6b8edb51 PA |
9821 | void |
9822 | remote_target::skip_frame () | |
6d820c5c DJ |
9823 | { |
9824 | int c; | |
9825 | ||
9826 | while (1) | |
9827 | { | |
9828 | c = readchar (remote_timeout); | |
9829 | switch (c) | |
9830 | { | |
9831 | case SERIAL_TIMEOUT: | |
9832 | /* Nothing we can do. */ | |
9833 | return; | |
9834 | case '#': | |
9835 | /* Discard the two bytes of checksum and stop. */ | |
9836 | c = readchar (remote_timeout); | |
9837 | if (c >= 0) | |
9838 | c = readchar (remote_timeout); | |
9839 | ||
9840 | return; | |
9841 | case '*': /* Run length encoding. */ | |
9842 | /* Discard the repeat count. */ | |
9843 | c = readchar (remote_timeout); | |
9844 | if (c < 0) | |
9845 | return; | |
9846 | break; | |
9847 | default: | |
9848 | /* A regular character. */ | |
9849 | break; | |
9850 | } | |
9851 | } | |
9852 | } | |
9853 | ||
c906108c | 9854 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9855 | into *BUF, verifying the checksum, length, and handling run-length |
9856 | compression. NUL terminate the buffer. If there is not enough room, | |
8d64371b | 9857 | expand *BUF. |
c906108c | 9858 | |
c2d11a7d JM |
9859 | Returns -1 on error, number of characters in buffer (ignoring the |
9860 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9861 | SERIAL status indications). */ |
c2d11a7d | 9862 | |
6b8edb51 | 9863 | long |
8d64371b | 9864 | remote_target::read_frame (gdb::char_vector *buf_p) |
c906108c SS |
9865 | { |
9866 | unsigned char csum; | |
c2d11a7d | 9867 | long bc; |
c906108c | 9868 | int c; |
8d64371b | 9869 | char *buf = buf_p->data (); |
a6f3e723 | 9870 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9871 | |
9872 | csum = 0; | |
c2d11a7d | 9873 | bc = 0; |
c906108c SS |
9874 | |
9875 | while (1) | |
9876 | { | |
9877 | c = readchar (remote_timeout); | |
c906108c SS |
9878 | switch (c) |
9879 | { | |
9880 | case SERIAL_TIMEOUT: | |
2189c312 | 9881 | remote_debug_printf ("Timeout in mid-packet, retrying"); |
c2d11a7d | 9882 | return -1; |
2189c312 | 9883 | |
c906108c | 9884 | case '$': |
2189c312 | 9885 | remote_debug_printf ("Saw new packet start in middle of old one"); |
23860348 | 9886 | return -1; /* Start a new packet, count retries. */ |
2189c312 | 9887 | |
c906108c SS |
9888 | case '#': |
9889 | { | |
9890 | unsigned char pktcsum; | |
e1b09194 AC |
9891 | int check_0 = 0; |
9892 | int check_1 = 0; | |
c906108c | 9893 | |
c2d11a7d | 9894 | buf[bc] = '\0'; |
c906108c | 9895 | |
e1b09194 AC |
9896 | check_0 = readchar (remote_timeout); |
9897 | if (check_0 >= 0) | |
9898 | check_1 = readchar (remote_timeout); | |
802188a7 | 9899 | |
e1b09194 AC |
9900 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9901 | { | |
2189c312 | 9902 | remote_debug_printf ("Timeout in checksum, retrying"); |
e1b09194 AC |
9903 | return -1; |
9904 | } | |
9905 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 | 9906 | { |
2189c312 | 9907 | remote_debug_printf ("Communication error in checksum"); |
40e3f985 FN |
9908 | return -1; |
9909 | } | |
c906108c | 9910 | |
a6f3e723 SL |
9911 | /* Don't recompute the checksum; with no ack packets we |
9912 | don't have any way to indicate a packet retransmission | |
9913 | is necessary. */ | |
9914 | if (rs->noack_mode) | |
9915 | return bc; | |
9916 | ||
e1b09194 | 9917 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9918 | if (csum == pktcsum) |
dda83cd7 | 9919 | return bc; |
c906108c | 9920 | |
2189c312 SM |
9921 | remote_debug_printf |
9922 | ("Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s", | |
9923 | pktcsum, csum, escape_buffer (buf, bc).c_str ()); | |
6e5abd65 | 9924 | |
c2d11a7d | 9925 | /* Number of characters in buffer ignoring trailing |
dda83cd7 | 9926 | NULL. */ |
c2d11a7d | 9927 | return -1; |
c906108c | 9928 | } |
23860348 | 9929 | case '*': /* Run length encoding. */ |
dda83cd7 | 9930 | { |
c2c6d25f | 9931 | int repeat; |
c906108c | 9932 | |
24b21115 | 9933 | csum += c; |
b4501125 AC |
9934 | c = readchar (remote_timeout); |
9935 | csum += c; | |
23860348 | 9936 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9937 | |
23860348 | 9938 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9939 | |
6d820c5c | 9940 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9941 | { |
8d64371b | 9942 | if (bc + repeat - 1 >= buf_p->size () - 1) |
6d820c5c DJ |
9943 | { |
9944 | /* Make some more room in the buffer. */ | |
8d64371b TT |
9945 | buf_p->resize (buf_p->size () + repeat); |
9946 | buf = buf_p->data (); | |
6d820c5c DJ |
9947 | } |
9948 | ||
c2d11a7d JM |
9949 | memset (&buf[bc], buf[bc - 1], repeat); |
9950 | bc += repeat; | |
c2c6d25f JM |
9951 | continue; |
9952 | } | |
9953 | ||
c2d11a7d | 9954 | buf[bc] = '\0'; |
6cb06a8c | 9955 | gdb_printf (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9956 | return -1; |
c2c6d25f | 9957 | } |
c906108c | 9958 | default: |
8d64371b | 9959 | if (bc >= buf_p->size () - 1) |
c906108c | 9960 | { |
6d820c5c | 9961 | /* Make some more room in the buffer. */ |
8d64371b TT |
9962 | buf_p->resize (buf_p->size () * 2); |
9963 | buf = buf_p->data (); | |
c906108c SS |
9964 | } |
9965 | ||
6d820c5c DJ |
9966 | buf[bc++] = c; |
9967 | csum += c; | |
9968 | continue; | |
c906108c SS |
9969 | } |
9970 | } | |
9971 | } | |
9972 | ||
ed2b7c17 TT |
9973 | /* Set this to the maximum number of seconds to wait instead of waiting forever |
9974 | in target_wait(). If this timer times out, then it generates an error and | |
9975 | the command is aborted. This replaces most of the need for timeouts in the | |
9976 | GDB test suite, and makes it possible to distinguish between a hung target | |
9977 | and one with slow communications. */ | |
9978 | ||
9979 | static int watchdog = 0; | |
9980 | static void | |
9981 | show_watchdog (struct ui_file *file, int from_tty, | |
9982 | struct cmd_list_element *c, const char *value) | |
9983 | { | |
6cb06a8c | 9984 | gdb_printf (file, _("Watchdog timer is %s.\n"), value); |
ed2b7c17 TT |
9985 | } |
9986 | ||
c906108c | 9987 | /* Read a packet from the remote machine, with error checking, and |
8d64371b TT |
9988 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9989 | FOREVER, wait forever rather than timing out; this is used (in | |
9990 | synchronous mode) to wait for a target that is is executing user | |
9991 | code to stop. */ | |
d9fcf2fb JM |
9992 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9993 | don't have to change all the calls to getpkt to deal with the | |
9994 | return value, because at the moment I don't know what the right | |
23860348 | 9995 | thing to do it for those. */ |
6b8edb51 | 9996 | |
c906108c | 9997 | void |
8d64371b | 9998 | remote_target::getpkt (gdb::char_vector *buf, int forever) |
d9fcf2fb | 9999 | { |
8d64371b | 10000 | getpkt_sane (buf, forever); |
d9fcf2fb JM |
10001 | } |
10002 | ||
10003 | ||
10004 | /* Read a packet from the remote machine, with error checking, and | |
8d64371b TT |
10005 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
10006 | FOREVER, wait forever rather than timing out; this is used (in | |
10007 | synchronous mode) to wait for a target that is is executing user | |
10008 | code to stop. If FOREVER == 0, this function is allowed to time | |
10009 | out gracefully and return an indication of this to the caller. | |
10010 | Otherwise return the number of bytes read. If EXPECTING_NOTIF, | |
10011 | consider receiving a notification enough reason to return to the | |
10012 | caller. *IS_NOTIF is an output boolean that indicates whether *BUF | |
10013 | holds a notification or not (a regular packet). */ | |
74531fed | 10014 | |
6b8edb51 | 10015 | int |
8d64371b | 10016 | remote_target::getpkt_or_notif_sane_1 (gdb::char_vector *buf, |
6b8edb51 PA |
10017 | int forever, int expecting_notif, |
10018 | int *is_notif) | |
c906108c | 10019 | { |
2d717e4f | 10020 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
10021 | int c; |
10022 | int tries; | |
10023 | int timeout; | |
df4b58fe | 10024 | int val = -1; |
c906108c | 10025 | |
8d64371b | 10026 | strcpy (buf->data (), "timeout"); |
c906108c SS |
10027 | |
10028 | if (forever) | |
74531fed PA |
10029 | timeout = watchdog > 0 ? watchdog : -1; |
10030 | else if (expecting_notif) | |
10031 | timeout = 0; /* There should already be a char in the buffer. If | |
10032 | not, bail out. */ | |
c906108c SS |
10033 | else |
10034 | timeout = remote_timeout; | |
10035 | ||
10036 | #define MAX_TRIES 3 | |
10037 | ||
74531fed PA |
10038 | /* Process any number of notifications, and then return when |
10039 | we get a packet. */ | |
10040 | for (;;) | |
c906108c | 10041 | { |
d9c43928 | 10042 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
10043 | times. */ |
10044 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 10045 | { |
74531fed PA |
10046 | /* This can loop forever if the remote side sends us |
10047 | characters continuously, but if it pauses, we'll get | |
10048 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
10049 | we'll count that as a retry. | |
10050 | ||
10051 | Note that even when forever is set, we will only wait | |
10052 | forever prior to the start of a packet. After that, we | |
10053 | expect characters to arrive at a brisk pace. They should | |
10054 | show up within remote_timeout intervals. */ | |
10055 | do | |
10056 | c = readchar (timeout); | |
10057 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
10058 | |
10059 | if (c == SERIAL_TIMEOUT) | |
10060 | { | |
74531fed PA |
10061 | if (expecting_notif) |
10062 | return -1; /* Don't complain, it's normal to not get | |
10063 | anything in this case. */ | |
10064 | ||
23860348 | 10065 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 10066 | { |
5b6d1e4f | 10067 | remote_unpush_target (this); |
598d3636 JK |
10068 | throw_error (TARGET_CLOSE_ERROR, |
10069 | _("Watchdog timeout has expired. " | |
10070 | "Target detached.")); | |
c906108c | 10071 | } |
2189c312 SM |
10072 | |
10073 | remote_debug_printf ("Timed out."); | |
c906108c | 10074 | } |
74531fed PA |
10075 | else |
10076 | { | |
10077 | /* We've found the start of a packet or notification. | |
10078 | Now collect the data. */ | |
8d64371b | 10079 | val = read_frame (buf); |
74531fed PA |
10080 | if (val >= 0) |
10081 | break; | |
10082 | } | |
10083 | ||
c33e31fd | 10084 | remote_serial_write ("-", 1); |
c906108c | 10085 | } |
c906108c | 10086 | |
74531fed PA |
10087 | if (tries > MAX_TRIES) |
10088 | { | |
10089 | /* We have tried hard enough, and just can't receive the | |
10090 | packet/notification. Give up. */ | |
6cb06a8c | 10091 | gdb_printf (_("Ignoring packet error, continuing...\n")); |
c906108c | 10092 | |
74531fed PA |
10093 | /* Skip the ack char if we're in no-ack mode. */ |
10094 | if (!rs->noack_mode) | |
c33e31fd | 10095 | remote_serial_write ("+", 1); |
74531fed PA |
10096 | return -1; |
10097 | } | |
c906108c | 10098 | |
74531fed PA |
10099 | /* If we got an ordinary packet, return that to our caller. */ |
10100 | if (c == '$') | |
c906108c SS |
10101 | { |
10102 | if (remote_debug) | |
43e526b9 | 10103 | { |
6cc8564b LM |
10104 | int max_chars; |
10105 | ||
10106 | if (remote_packet_max_chars < 0) | |
10107 | max_chars = val; | |
10108 | else | |
10109 | max_chars = remote_packet_max_chars; | |
10110 | ||
6f8976bf | 10111 | std::string str |
8d64371b | 10112 | = escape_buffer (buf->data (), |
6cc8564b | 10113 | std::min (val, max_chars)); |
6f8976bf | 10114 | |
6cc8564b | 10115 | if (val > max_chars) |
2189c312 SM |
10116 | remote_debug_printf_nofunc |
10117 | ("Packet received: %s [%d bytes omitted]", str.c_str (), | |
10118 | val - max_chars); | |
10119 | else | |
10120 | remote_debug_printf_nofunc ("Packet received: %s", | |
10121 | str.c_str ()); | |
43e526b9 | 10122 | } |
a6f3e723 SL |
10123 | |
10124 | /* Skip the ack char if we're in no-ack mode. */ | |
10125 | if (!rs->noack_mode) | |
c33e31fd | 10126 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
10127 | if (is_notif != NULL) |
10128 | *is_notif = 0; | |
0876f84a | 10129 | return val; |
c906108c SS |
10130 | } |
10131 | ||
74531fed PA |
10132 | /* If we got a notification, handle it, and go back to looking |
10133 | for a packet. */ | |
10134 | else | |
10135 | { | |
10136 | gdb_assert (c == '%'); | |
10137 | ||
2189c312 SM |
10138 | remote_debug_printf_nofunc |
10139 | (" Notification received: %s", | |
10140 | escape_buffer (buf->data (), val).c_str ()); | |
6e5abd65 | 10141 | |
fee9eda9 YQ |
10142 | if (is_notif != NULL) |
10143 | *is_notif = 1; | |
c906108c | 10144 | |
8d64371b | 10145 | handle_notification (rs->notif_state, buf->data ()); |
c906108c | 10146 | |
74531fed | 10147 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 10148 | |
74531fed | 10149 | if (expecting_notif) |
fee9eda9 | 10150 | return val; |
74531fed PA |
10151 | } |
10152 | } | |
10153 | } | |
10154 | ||
6b8edb51 | 10155 | int |
8d64371b | 10156 | remote_target::getpkt_sane (gdb::char_vector *buf, int forever) |
74531fed | 10157 | { |
8d64371b | 10158 | return getpkt_or_notif_sane_1 (buf, forever, 0, NULL); |
74531fed PA |
10159 | } |
10160 | ||
6b8edb51 | 10161 | int |
8d64371b | 10162 | remote_target::getpkt_or_notif_sane (gdb::char_vector *buf, int forever, |
6b8edb51 | 10163 | int *is_notif) |
74531fed | 10164 | { |
8d64371b | 10165 | return getpkt_or_notif_sane_1 (buf, forever, 1, is_notif); |
c906108c | 10166 | } |
74531fed | 10167 | |
28561a65 | 10168 | /* Kill any new fork children of inferior INF that haven't been |
cbb8991c DB |
10169 | processed by follow_fork. */ |
10170 | ||
6b8edb51 | 10171 | void |
28561a65 | 10172 | remote_target::kill_new_fork_children (inferior *inf) |
cbb8991c | 10173 | { |
6b8edb51 | 10174 | remote_state *rs = get_remote_state (); |
42938c1a | 10175 | const notif_client *notif = ¬if_client_stop; |
cbb8991c | 10176 | |
28561a65 SM |
10177 | /* Kill the fork child threads of any threads in inferior INF that are stopped |
10178 | at a fork event. */ | |
10179 | for (thread_info *thread : inf->non_exited_threads ()) | |
cbb8991c | 10180 | { |
28561a65 | 10181 | const target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c | 10182 | |
28561a65 SM |
10183 | if (ws == nullptr) |
10184 | continue; | |
cbb8991c | 10185 | |
28561a65 SM |
10186 | int child_pid = ws->child_ptid ().pid (); |
10187 | int res = remote_vkill (child_pid); | |
10188 | ||
10189 | if (res != 0) | |
10190 | error (_("Can't kill fork child process %d"), child_pid); | |
cbb8991c DB |
10191 | } |
10192 | ||
10193 | /* Check for any pending fork events (not reported or processed yet) | |
28561a65 | 10194 | in inferior INF and kill those fork child threads as well. */ |
cbb8991c | 10195 | remote_notif_get_pending_events (notif); |
953edf2b | 10196 | for (auto &event : rs->stop_reply_queue) |
28561a65 SM |
10197 | { |
10198 | if (event->ptid.pid () != inf->pid) | |
10199 | continue; | |
953edf2b | 10200 | |
28561a65 SM |
10201 | if (!is_fork_status (event->ws.kind ())) |
10202 | continue; | |
10203 | ||
10204 | int child_pid = event->ws.child_ptid ().pid (); | |
10205 | int res = remote_vkill (child_pid); | |
10206 | ||
10207 | if (res != 0) | |
10208 | error (_("Can't kill fork child process %d"), child_pid); | |
10209 | } | |
cbb8991c DB |
10210 | } |
10211 | ||
c906108c | 10212 | \f |
8020350c DB |
10213 | /* Target hook to kill the current inferior. */ |
10214 | ||
f6ac5f3d PA |
10215 | void |
10216 | remote_target::kill () | |
43ff13b4 | 10217 | { |
8020350c | 10218 | int res = -1; |
28561a65 | 10219 | inferior *inf = find_inferior_pid (this, inferior_ptid.pid ()); |
0fdf84ca | 10220 | |
28561a65 SM |
10221 | gdb_assert (inf != nullptr); |
10222 | ||
ff52c073 | 10223 | if (m_features.packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 10224 | { |
8020350c DB |
10225 | /* If we're stopped while forking and we haven't followed yet, |
10226 | kill the child task. We need to do this before killing the | |
10227 | parent task because if this is a vfork then the parent will | |
10228 | be sleeping. */ | |
28561a65 | 10229 | kill_new_fork_children (inf); |
8020350c | 10230 | |
28561a65 | 10231 | res = remote_vkill (inf->pid); |
8020350c | 10232 | if (res == 0) |
0fdf84ca | 10233 | { |
bc1e6c81 | 10234 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
10235 | return; |
10236 | } | |
8020350c | 10237 | } |
0fdf84ca | 10238 | |
8020350c DB |
10239 | /* If we are in 'target remote' mode and we are killing the only |
10240 | inferior, then we will tell gdbserver to exit and unpush the | |
10241 | target. */ | |
ff52c073 | 10242 | if (res == -1 && !m_features.remote_multi_process_p () |
5b6d1e4f | 10243 | && number_of_live_inferiors (this) == 1) |
8020350c DB |
10244 | { |
10245 | remote_kill_k (); | |
10246 | ||
10247 | /* We've killed the remote end, we get to mourn it. If we are | |
10248 | not in extended mode, mourning the inferior also unpushes | |
10249 | remote_ops from the target stack, which closes the remote | |
10250 | connection. */ | |
bc1e6c81 | 10251 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
10252 | |
10253 | return; | |
0fdf84ca | 10254 | } |
43ff13b4 | 10255 | |
8020350c | 10256 | error (_("Can't kill process")); |
43ff13b4 JM |
10257 | } |
10258 | ||
8020350c DB |
10259 | /* Send a kill request to the target using the 'vKill' packet. */ |
10260 | ||
6b8edb51 PA |
10261 | int |
10262 | remote_target::remote_vkill (int pid) | |
82f73884 | 10263 | { |
ff52c073 | 10264 | if (m_features.packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
10265 | return -1; |
10266 | ||
6b8edb51 PA |
10267 | remote_state *rs = get_remote_state (); |
10268 | ||
82f73884 | 10269 | /* Tell the remote target to detach. */ |
8d64371b | 10270 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vKill;%x", pid); |
82f73884 | 10271 | putpkt (rs->buf); |
8d64371b | 10272 | getpkt (&rs->buf, 0); |
82f73884 | 10273 | |
ff52c073 | 10274 | switch (m_features.packet_ok (rs->buf, PACKET_vKill)) |
4082afcc PA |
10275 | { |
10276 | case PACKET_OK: | |
10277 | return 0; | |
10278 | case PACKET_ERROR: | |
10279 | return 1; | |
10280 | case PACKET_UNKNOWN: | |
10281 | return -1; | |
10282 | default: | |
f34652de | 10283 | internal_error (_("Bad result from packet_ok")); |
4082afcc | 10284 | } |
82f73884 PA |
10285 | } |
10286 | ||
8020350c DB |
10287 | /* Send a kill request to the target using the 'k' packet. */ |
10288 | ||
6b8edb51 PA |
10289 | void |
10290 | remote_target::remote_kill_k () | |
82f73884 | 10291 | { |
8020350c DB |
10292 | /* Catch errors so the user can quit from gdb even when we |
10293 | aren't on speaking terms with the remote system. */ | |
a70b8144 | 10294 | try |
82f73884 | 10295 | { |
82f73884 | 10296 | putpkt ("k"); |
82f73884 | 10297 | } |
230d2906 | 10298 | catch (const gdb_exception_error &ex) |
8020350c DB |
10299 | { |
10300 | if (ex.error == TARGET_CLOSE_ERROR) | |
10301 | { | |
10302 | /* If we got an (EOF) error that caused the target | |
10303 | to go away, then we're done, that's what we wanted. | |
10304 | "k" is susceptible to cause a premature EOF, given | |
10305 | that the remote server isn't actually required to | |
10306 | reply to "k", and it can happen that it doesn't | |
10307 | even get to reply ACK to the "k". */ | |
10308 | return; | |
10309 | } | |
82f73884 | 10310 | |
8020350c DB |
10311 | /* Otherwise, something went wrong. We didn't actually kill |
10312 | the target. Just propagate the exception, and let the | |
10313 | user or higher layers decide what to do. */ | |
eedc3f4f | 10314 | throw; |
8020350c | 10315 | } |
82f73884 PA |
10316 | } |
10317 | ||
f6ac5f3d PA |
10318 | void |
10319 | remote_target::mourn_inferior () | |
c906108c | 10320 | { |
8020350c | 10321 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 10322 | |
9607784a PA |
10323 | /* We're no longer interested in notification events of an inferior |
10324 | that exited or was killed/detached. */ | |
10325 | discard_pending_stop_replies (current_inferior ()); | |
10326 | ||
8020350c | 10327 | /* In 'target remote' mode with one inferior, we close the connection. */ |
5b6d1e4f | 10328 | if (!rs->extended && number_of_live_inferiors (this) <= 1) |
8020350c | 10329 | { |
5b6d1e4f | 10330 | remote_unpush_target (this); |
8020350c DB |
10331 | return; |
10332 | } | |
c906108c | 10333 | |
e24a49d8 PA |
10334 | /* In case we got here due to an error, but we're going to stay |
10335 | connected. */ | |
10336 | rs->waiting_for_stop_reply = 0; | |
10337 | ||
dc1981d7 PA |
10338 | /* If the current general thread belonged to the process we just |
10339 | detached from or has exited, the remote side current general | |
10340 | thread becomes undefined. Considering a case like this: | |
10341 | ||
10342 | - We just got here due to a detach. | |
10343 | - The process that we're detaching from happens to immediately | |
10344 | report a global breakpoint being hit in non-stop mode, in the | |
10345 | same thread we had selected before. | |
10346 | - GDB attaches to this process again. | |
10347 | - This event happens to be the next event we handle. | |
10348 | ||
10349 | GDB would consider that the current general thread didn't need to | |
10350 | be set on the stub side (with Hg), since for all it knew, | |
10351 | GENERAL_THREAD hadn't changed. | |
10352 | ||
10353 | Notice that although in all-stop mode, the remote server always | |
10354 | sets the current thread to the thread reporting the stop event, | |
10355 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
10356 | not* change the current thread when reporting a breakpoint hit, | |
10357 | due to the decoupling of event reporting and event handling. | |
10358 | ||
10359 | To keep things simple, we always invalidate our notion of the | |
10360 | current thread. */ | |
47f8a51d | 10361 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 10362 | |
8020350c | 10363 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 | 10364 | generic_mourn_inferior (); |
2d717e4f | 10365 | } |
c906108c | 10366 | |
57810aa7 | 10367 | bool |
f6ac5f3d | 10368 | extended_remote_target::supports_disable_randomization () |
03583c20 | 10369 | { |
ff52c073 CS |
10370 | return (m_features.packet_support (PACKET_QDisableRandomization) |
10371 | == PACKET_ENABLE); | |
03583c20 UW |
10372 | } |
10373 | ||
6b8edb51 PA |
10374 | void |
10375 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
10376 | { |
10377 | struct remote_state *rs = get_remote_state (); | |
10378 | char *reply; | |
10379 | ||
8d64371b TT |
10380 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
10381 | "QDisableRandomization:%x", val); | |
03583c20 | 10382 | putpkt (rs->buf); |
b6bb3468 | 10383 | reply = remote_get_noisy_reply (); |
03583c20 UW |
10384 | if (*reply == '\0') |
10385 | error (_("Target does not support QDisableRandomization.")); | |
10386 | if (strcmp (reply, "OK") != 0) | |
10387 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
10388 | } | |
10389 | ||
6b8edb51 PA |
10390 | int |
10391 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
10392 | { |
10393 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 10394 | int len; |
94585166 | 10395 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 10396 | |
2d717e4f DJ |
10397 | /* If the user has disabled vRun support, or we have detected that |
10398 | support is not available, do not try it. */ | |
ff52c073 | 10399 | if (m_features.packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 10400 | return -1; |
424163ea | 10401 | |
8d64371b TT |
10402 | strcpy (rs->buf.data (), "vRun;"); |
10403 | len = strlen (rs->buf.data ()); | |
c906108c | 10404 | |
2d717e4f DJ |
10405 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
10406 | error (_("Remote file name too long for run packet")); | |
8d64371b | 10407 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf.data () + len, |
9f1b45b0 | 10408 | strlen (remote_exec_file)); |
2d717e4f | 10409 | |
7c5ded6a | 10410 | if (!args.empty ()) |
2d717e4f | 10411 | { |
2d717e4f | 10412 | int i; |
2d717e4f | 10413 | |
773a1edc | 10414 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
10415 | for (i = 0; argv[i] != NULL; i++) |
10416 | { | |
10417 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
10418 | error (_("Argument list too long for run packet")); | |
10419 | rs->buf[len++] = ';'; | |
8d64371b | 10420 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf.data () + len, |
9f1b45b0 | 10421 | strlen (argv[i])); |
2d717e4f | 10422 | } |
2d717e4f DJ |
10423 | } |
10424 | ||
10425 | rs->buf[len++] = '\0'; | |
10426 | ||
10427 | putpkt (rs->buf); | |
8d64371b | 10428 | getpkt (&rs->buf, 0); |
2d717e4f | 10429 | |
ff52c073 | 10430 | switch (m_features.packet_ok (rs->buf, PACKET_vRun)) |
2d717e4f | 10431 | { |
4082afcc | 10432 | case PACKET_OK: |
3405876a | 10433 | /* We have a wait response. All is well. */ |
2d717e4f | 10434 | return 0; |
4082afcc PA |
10435 | case PACKET_UNKNOWN: |
10436 | return -1; | |
10437 | case PACKET_ERROR: | |
2d717e4f DJ |
10438 | if (remote_exec_file[0] == '\0') |
10439 | error (_("Running the default executable on the remote target failed; " | |
10440 | "try \"set remote exec-file\"?")); | |
10441 | else | |
10442 | error (_("Running \"%s\" on the remote target failed"), | |
10443 | remote_exec_file); | |
4082afcc | 10444 | default: |
557b4d76 | 10445 | gdb_assert_not_reached ("bad switch"); |
2d717e4f | 10446 | } |
c906108c SS |
10447 | } |
10448 | ||
0a2dde4a SDJ |
10449 | /* Helper function to send set/unset environment packets. ACTION is |
10450 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
10451 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
10452 | sent. */ | |
10453 | ||
6b8edb51 PA |
10454 | void |
10455 | remote_target::send_environment_packet (const char *action, | |
10456 | const char *packet, | |
10457 | const char *value) | |
0a2dde4a | 10458 | { |
6b8edb51 PA |
10459 | remote_state *rs = get_remote_state (); |
10460 | ||
0a2dde4a SDJ |
10461 | /* Convert the environment variable to an hex string, which |
10462 | is the best format to be transmitted over the wire. */ | |
10463 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
10464 | strlen (value)); | |
10465 | ||
8d64371b | 10466 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
0a2dde4a SDJ |
10467 | "%s:%s", packet, encoded_value.c_str ()); |
10468 | ||
10469 | putpkt (rs->buf); | |
8d64371b TT |
10470 | getpkt (&rs->buf, 0); |
10471 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10472 | warning (_("Unable to %s environment variable '%s' on remote."), |
10473 | action, value); | |
10474 | } | |
10475 | ||
10476 | /* Helper function to handle the QEnvironment* packets. */ | |
10477 | ||
6b8edb51 PA |
10478 | void |
10479 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 10480 | { |
6b8edb51 PA |
10481 | remote_state *rs = get_remote_state (); |
10482 | ||
ff52c073 | 10483 | if (m_features.packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
0a2dde4a SDJ |
10484 | { |
10485 | putpkt ("QEnvironmentReset"); | |
8d64371b TT |
10486 | getpkt (&rs->buf, 0); |
10487 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10488 | warning (_("Unable to reset environment on remote.")); |
10489 | } | |
10490 | ||
10491 | gdb_environ *e = ¤t_inferior ()->environment; | |
10492 | ||
ff52c073 CS |
10493 | if (m_features.packet_support (PACKET_QEnvironmentHexEncoded) |
10494 | != PACKET_DISABLE) | |
10495 | { | |
10496 | for (const std::string &el : e->user_set_env ()) | |
10497 | send_environment_packet ("set", "QEnvironmentHexEncoded", | |
10498 | el.c_str ()); | |
10499 | } | |
10500 | ||
0a2dde4a | 10501 | |
ff52c073 | 10502 | if (m_features.packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) |
0a2dde4a | 10503 | for (const std::string &el : e->user_unset_env ()) |
6b8edb51 | 10504 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
10505 | } |
10506 | ||
bc3b087d SDJ |
10507 | /* Helper function to set the current working directory for the |
10508 | inferior in the remote target. */ | |
10509 | ||
6b8edb51 PA |
10510 | void |
10511 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d | 10512 | { |
ff52c073 | 10513 | if (m_features.packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) |
bc3b087d | 10514 | { |
11bd012e | 10515 | const std::string &inferior_cwd = current_inferior ()->cwd (); |
6b8edb51 | 10516 | remote_state *rs = get_remote_state (); |
bc3b087d | 10517 | |
11bd012e | 10518 | if (!inferior_cwd.empty ()) |
bc3b087d | 10519 | { |
11bd012e SM |
10520 | std::string hexpath |
10521 | = bin2hex ((const gdb_byte *) inferior_cwd.data (), | |
10522 | inferior_cwd.size ()); | |
bc3b087d | 10523 | |
8d64371b | 10524 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10525 | "QSetWorkingDir:%s", hexpath.c_str ()); |
10526 | } | |
10527 | else | |
10528 | { | |
10529 | /* An empty inferior_cwd means that the user wants us to | |
10530 | reset the remote server's inferior's cwd. */ | |
8d64371b | 10531 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10532 | "QSetWorkingDir:"); |
10533 | } | |
10534 | ||
10535 | putpkt (rs->buf); | |
8d64371b | 10536 | getpkt (&rs->buf, 0); |
ff52c073 | 10537 | if (m_features.packet_ok (rs->buf, PACKET_QSetWorkingDir) != PACKET_OK) |
bc3b087d SDJ |
10538 | error (_("\ |
10539 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10540 | directory: %s"), | |
8d64371b | 10541 | rs->buf.data ()); |
bc3b087d SDJ |
10542 | |
10543 | } | |
10544 | } | |
10545 | ||
2d717e4f DJ |
10546 | /* In the extended protocol we want to be able to do things like |
10547 | "run" and have them basically work as expected. So we need | |
10548 | a special create_inferior function. We support changing the | |
10549 | executable file and the command line arguments, but not the | |
10550 | environment. */ | |
10551 | ||
f6ac5f3d PA |
10552 | void |
10553 | extended_remote_target::create_inferior (const char *exec_file, | |
10554 | const std::string &args, | |
10555 | char **env, int from_tty) | |
43ff13b4 | 10556 | { |
3405876a PA |
10557 | int run_worked; |
10558 | char *stop_reply; | |
10559 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10560 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10561 | |
43ff13b4 | 10562 | /* If running asynchronously, register the target file descriptor |
23860348 | 10563 | with the event loop. */ |
75c99385 | 10564 | if (target_can_async_p ()) |
4a570176 | 10565 | target_async (true); |
43ff13b4 | 10566 | |
03583c20 | 10567 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10568 | if (supports_disable_randomization ()) |
03583c20 UW |
10569 | extended_remote_disable_randomization (disable_randomization); |
10570 | ||
aefd8b33 SDJ |
10571 | /* If startup-with-shell is on, we inform gdbserver to start the |
10572 | remote inferior using a shell. */ | |
ff52c073 | 10573 | if (m_features.packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) |
aefd8b33 | 10574 | { |
8d64371b | 10575 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
aefd8b33 SDJ |
10576 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); |
10577 | putpkt (rs->buf); | |
8d64371b TT |
10578 | getpkt (&rs->buf, 0); |
10579 | if (strcmp (rs->buf.data (), "OK") != 0) | |
aefd8b33 SDJ |
10580 | error (_("\ |
10581 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
8d64371b | 10582 | rs->buf.data ()); |
aefd8b33 SDJ |
10583 | } |
10584 | ||
6b8edb51 | 10585 | extended_remote_environment_support (); |
0a2dde4a | 10586 | |
6b8edb51 | 10587 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10588 | |
43ff13b4 | 10589 | /* Now restart the remote server. */ |
3405876a PA |
10590 | run_worked = extended_remote_run (args) != -1; |
10591 | if (!run_worked) | |
2d717e4f DJ |
10592 | { |
10593 | /* vRun was not supported. Fail if we need it to do what the | |
10594 | user requested. */ | |
10595 | if (remote_exec_file[0]) | |
10596 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10597 | if (!args.empty ()) |
65e65158 | 10598 | error (_("Remote target does not support \"set args\" or run ARGS")); |
43ff13b4 | 10599 | |
2d717e4f DJ |
10600 | /* Fall back to "R". */ |
10601 | extended_remote_restart (); | |
10602 | } | |
424163ea | 10603 | |
3405876a | 10604 | /* vRun's success return is a stop reply. */ |
8d64371b | 10605 | stop_reply = run_worked ? rs->buf.data () : NULL; |
3405876a | 10606 | add_current_inferior_and_thread (stop_reply); |
c0a2216e | 10607 | |
2d717e4f DJ |
10608 | /* Get updated offsets, if the stub uses qOffsets. */ |
10609 | get_offsets (); | |
2d717e4f | 10610 | } |
c906108c | 10611 | \f |
c5aa993b | 10612 | |
b775012e LM |
10613 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10614 | the list of conditions (in agent expression bytecode format), if any, the | |
10615 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10616 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10617 | |
10618 | static int | |
10619 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10620 | struct bp_target_info *bp_tgt, char *buf, |
10621 | char *buf_end) | |
b775012e | 10622 | { |
3cde5c42 | 10623 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10624 | return 0; |
10625 | ||
10626 | buf += strlen (buf); | |
bba74b36 | 10627 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10628 | buf++; |
10629 | ||
83621223 | 10630 | /* Send conditions to the target. */ |
d538e36d | 10631 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10632 | { |
bba74b36 | 10633 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10634 | buf += strlen (buf); |
3cde5c42 | 10635 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10636 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10637 | *buf = '\0'; | |
10638 | } | |
b775012e LM |
10639 | return 0; |
10640 | } | |
10641 | ||
d3ce09f5 SS |
10642 | static void |
10643 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10644 | struct bp_target_info *bp_tgt, char *buf) | |
10645 | { | |
3cde5c42 | 10646 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10647 | return; |
10648 | ||
10649 | buf += strlen (buf); | |
10650 | ||
10651 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10652 | buf += strlen (buf); | |
10653 | ||
10654 | /* Concatenate all the agent expressions that are commands into the | |
10655 | cmds parameter. */ | |
df97be55 | 10656 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10657 | { |
10658 | sprintf (buf, "X%x,", aexpr->len); | |
10659 | buf += strlen (buf); | |
3cde5c42 | 10660 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10661 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10662 | *buf = '\0'; | |
10663 | } | |
d3ce09f5 SS |
10664 | } |
10665 | ||
8181d85f DJ |
10666 | /* Insert a breakpoint. On targets that have software breakpoint |
10667 | support, we ask the remote target to do the work; on targets | |
10668 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10669 | |
f6ac5f3d PA |
10670 | int |
10671 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10672 | struct bp_target_info *bp_tgt) | |
c906108c | 10673 | { |
d471ea57 AC |
10674 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10675 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10676 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10677 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10678 | |
ff52c073 | 10679 | if (m_features.packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10680 | { |
0d5ed153 | 10681 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10682 | struct remote_state *rs; |
bba74b36 | 10683 | char *p, *endbuf; |
4fff2411 | 10684 | |
28439a30 PA |
10685 | /* Make sure the remote is pointing at the right process, if |
10686 | necessary. */ | |
10687 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10688 | set_general_process (); | |
10689 | ||
4fff2411 | 10690 | rs = get_remote_state (); |
8d64371b TT |
10691 | p = rs->buf.data (); |
10692 | endbuf = p + get_remote_packet_size (); | |
802188a7 | 10693 | |
96baa820 JM |
10694 | *(p++) = 'Z'; |
10695 | *(p++) = '0'; | |
10696 | *(p++) = ','; | |
7c0f6dcc | 10697 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10698 | p += hexnumstr (p, addr); |
579c6ad9 | 10699 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10700 | |
f6ac5f3d | 10701 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10702 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10703 | |
f6ac5f3d | 10704 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10705 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10706 | ||
6d820c5c | 10707 | putpkt (rs->buf); |
8d64371b | 10708 | getpkt (&rs->buf, 0); |
96baa820 | 10709 | |
ff52c073 | 10710 | switch (m_features.packet_ok (rs->buf, PACKET_Z0)) |
96baa820 | 10711 | { |
d471ea57 AC |
10712 | case PACKET_ERROR: |
10713 | return -1; | |
10714 | case PACKET_OK: | |
10715 | return 0; | |
10716 | case PACKET_UNKNOWN: | |
10717 | break; | |
96baa820 JM |
10718 | } |
10719 | } | |
c906108c | 10720 | |
0000e5cc PA |
10721 | /* If this breakpoint has target-side commands but this stub doesn't |
10722 | support Z0 packets, throw error. */ | |
3cde5c42 | 10723 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10724 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10725 | Target doesn't support breakpoints that have target side commands.")); | |
10726 | ||
f6ac5f3d | 10727 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10728 | } |
10729 | ||
f6ac5f3d PA |
10730 | int |
10731 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10732 | struct bp_target_info *bp_tgt, | |
10733 | enum remove_bp_reason reason) | |
c906108c | 10734 | { |
8181d85f | 10735 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10736 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10737 | |
ff52c073 | 10738 | if (m_features.packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10739 | { |
8d64371b TT |
10740 | char *p = rs->buf.data (); |
10741 | char *endbuf = p + get_remote_packet_size (); | |
802188a7 | 10742 | |
28439a30 PA |
10743 | /* Make sure the remote is pointing at the right process, if |
10744 | necessary. */ | |
10745 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10746 | set_general_process (); | |
10747 | ||
96baa820 JM |
10748 | *(p++) = 'z'; |
10749 | *(p++) = '0'; | |
10750 | *(p++) = ','; | |
10751 | ||
8181d85f DJ |
10752 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10753 | p += hexnumstr (p, addr); | |
579c6ad9 | 10754 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10755 | |
6d820c5c | 10756 | putpkt (rs->buf); |
8d64371b | 10757 | getpkt (&rs->buf, 0); |
96baa820 | 10758 | |
6d820c5c | 10759 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10760 | } |
10761 | ||
f6ac5f3d | 10762 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10763 | } |
10764 | ||
f486487f | 10765 | static enum Z_packet_type |
d471ea57 AC |
10766 | watchpoint_to_Z_packet (int type) |
10767 | { | |
10768 | switch (type) | |
10769 | { | |
10770 | case hw_write: | |
bb858e6a | 10771 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10772 | break; |
10773 | case hw_read: | |
bb858e6a | 10774 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10775 | break; |
10776 | case hw_access: | |
bb858e6a | 10777 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10778 | break; |
10779 | default: | |
f34652de | 10780 | internal_error (_("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10781 | } |
10782 | } | |
10783 | ||
f6ac5f3d PA |
10784 | int |
10785 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10786 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10787 | { |
d01949b6 | 10788 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10789 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10790 | char *p; |
d471ea57 | 10791 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10792 | |
ff52c073 | 10793 | if (m_features.packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10794 | return 1; |
802188a7 | 10795 | |
28439a30 PA |
10796 | /* Make sure the remote is pointing at the right process, if |
10797 | necessary. */ | |
10798 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10799 | set_general_process (); | |
10800 | ||
8d64371b TT |
10801 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "Z%x,", packet); |
10802 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10803 | addr = remote_address_masked (addr); |
10804 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10805 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10806 | |
6d820c5c | 10807 | putpkt (rs->buf); |
8d64371b | 10808 | getpkt (&rs->buf, 0); |
96baa820 | 10809 | |
ff52c073 | 10810 | switch (m_features.packet_ok (rs->buf, PACKET_Z0 + packet)) |
d471ea57 AC |
10811 | { |
10812 | case PACKET_ERROR: | |
d471ea57 | 10813 | return -1; |
85d721b8 PA |
10814 | case PACKET_UNKNOWN: |
10815 | return 1; | |
d471ea57 AC |
10816 | case PACKET_OK: |
10817 | return 0; | |
10818 | } | |
f34652de | 10819 | internal_error (_("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10820 | } |
10821 | ||
57810aa7 | 10822 | bool |
f6ac5f3d PA |
10823 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10824 | CORE_ADDR start, int length) | |
283002cf MR |
10825 | { |
10826 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10827 | ||
10828 | return diff < length; | |
10829 | } | |
10830 | ||
d471ea57 | 10831 | |
f6ac5f3d PA |
10832 | int |
10833 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10834 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10835 | { |
d01949b6 | 10836 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10837 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10838 | char *p; |
d471ea57 AC |
10839 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10840 | ||
ff52c073 | 10841 | if (m_features.packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10842 | return -1; |
802188a7 | 10843 | |
28439a30 PA |
10844 | /* Make sure the remote is pointing at the right process, if |
10845 | necessary. */ | |
10846 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10847 | set_general_process (); | |
10848 | ||
8d64371b TT |
10849 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "z%x,", packet); |
10850 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10851 | addr = remote_address_masked (addr); |
10852 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10853 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c | 10854 | putpkt (rs->buf); |
8d64371b | 10855 | getpkt (&rs->buf, 0); |
96baa820 | 10856 | |
ff52c073 | 10857 | switch (m_features.packet_ok (rs->buf, PACKET_Z0 + packet)) |
d471ea57 AC |
10858 | { |
10859 | case PACKET_ERROR: | |
10860 | case PACKET_UNKNOWN: | |
10861 | return -1; | |
10862 | case PACKET_OK: | |
10863 | return 0; | |
10864 | } | |
f34652de | 10865 | internal_error (_("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10866 | } |
10867 | ||
3c3bea1c | 10868 | |
60fcc1c3 TT |
10869 | static int remote_hw_watchpoint_limit = -1; |
10870 | static int remote_hw_watchpoint_length_limit = -1; | |
10871 | static int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 10872 | |
f6ac5f3d PA |
10873 | int |
10874 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10875 | { |
10876 | if (remote_hw_watchpoint_length_limit == 0) | |
10877 | return 0; | |
10878 | else if (remote_hw_watchpoint_length_limit < 0) | |
10879 | return 1; | |
10880 | else if (len <= remote_hw_watchpoint_length_limit) | |
10881 | return 1; | |
10882 | else | |
10883 | return 0; | |
10884 | } | |
10885 | ||
f6ac5f3d PA |
10886 | int |
10887 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10888 | { |
3c3bea1c GS |
10889 | if (type == bp_hardware_breakpoint) |
10890 | { | |
10891 | if (remote_hw_breakpoint_limit == 0) | |
10892 | return 0; | |
501eef12 AC |
10893 | else if (remote_hw_breakpoint_limit < 0) |
10894 | return 1; | |
3c3bea1c GS |
10895 | else if (cnt <= remote_hw_breakpoint_limit) |
10896 | return 1; | |
10897 | } | |
10898 | else | |
10899 | { | |
10900 | if (remote_hw_watchpoint_limit == 0) | |
10901 | return 0; | |
501eef12 AC |
10902 | else if (remote_hw_watchpoint_limit < 0) |
10903 | return 1; | |
3c3bea1c GS |
10904 | else if (ot) |
10905 | return -1; | |
10906 | else if (cnt <= remote_hw_watchpoint_limit) | |
10907 | return 1; | |
10908 | } | |
10909 | return -1; | |
10910 | } | |
10911 | ||
f7e6eed5 PA |
10912 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10913 | ||
57810aa7 | 10914 | bool |
f6ac5f3d | 10915 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10916 | { |
799a2abe | 10917 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10918 | |
799a2abe | 10919 | return (thread->priv != NULL |
7aabaf9d SM |
10920 | && (get_remote_thread_info (thread)->stop_reason |
10921 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10922 | } |
10923 | ||
10924 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10925 | remote. */ | |
10926 | ||
57810aa7 | 10927 | bool |
f6ac5f3d | 10928 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10929 | { |
ff52c073 | 10930 | return (m_features.packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
f7e6eed5 PA |
10931 | } |
10932 | ||
10933 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10934 | ||
57810aa7 | 10935 | bool |
f6ac5f3d | 10936 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10937 | { |
799a2abe | 10938 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10939 | |
799a2abe | 10940 | return (thread->priv != NULL |
7aabaf9d SM |
10941 | && (get_remote_thread_info (thread)->stop_reason |
10942 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10943 | } |
10944 | ||
10945 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10946 | remote. */ | |
10947 | ||
57810aa7 | 10948 | bool |
f6ac5f3d | 10949 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10950 | { |
ff52c073 | 10951 | return (m_features.packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
f7e6eed5 PA |
10952 | } |
10953 | ||
57810aa7 | 10954 | bool |
f6ac5f3d | 10955 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10956 | { |
799a2abe | 10957 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10958 | |
799a2abe | 10959 | return (thread->priv != NULL |
7aabaf9d SM |
10960 | && (get_remote_thread_info (thread)->stop_reason |
10961 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10962 | } |
10963 | ||
57810aa7 | 10964 | bool |
f6ac5f3d | 10965 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10966 | { |
799a2abe | 10967 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10968 | |
799a2abe | 10969 | if (thread->priv != NULL |
7aabaf9d SM |
10970 | && (get_remote_thread_info (thread)->stop_reason |
10971 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10972 | { |
7aabaf9d | 10973 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10974 | return true; |
4aa7a7f5 JJ |
10975 | } |
10976 | ||
57810aa7 | 10977 | return false; |
3c3bea1c GS |
10978 | } |
10979 | ||
10980 | ||
f6ac5f3d PA |
10981 | int |
10982 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10983 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10984 | { |
0d5ed153 | 10985 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10986 | struct remote_state *rs; |
bba74b36 | 10987 | char *p, *endbuf; |
dd61ec5c | 10988 | char *message; |
3c3bea1c | 10989 | |
ff52c073 | 10990 | if (m_features.packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10991 | return -1; |
2bc416ba | 10992 | |
28439a30 PA |
10993 | /* Make sure the remote is pointing at the right process, if |
10994 | necessary. */ | |
10995 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10996 | set_general_process (); | |
10997 | ||
4fff2411 | 10998 | rs = get_remote_state (); |
8d64371b TT |
10999 | p = rs->buf.data (); |
11000 | endbuf = p + get_remote_packet_size (); | |
4fff2411 | 11001 | |
96baa820 JM |
11002 | *(p++) = 'Z'; |
11003 | *(p++) = '1'; | |
11004 | *(p++) = ','; | |
802188a7 | 11005 | |
0d5ed153 | 11006 | addr = remote_address_masked (addr); |
96baa820 | 11007 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 11008 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 11009 | |
f6ac5f3d | 11010 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 11011 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 11012 | |
f6ac5f3d | 11013 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
11014 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
11015 | ||
6d820c5c | 11016 | putpkt (rs->buf); |
8d64371b | 11017 | getpkt (&rs->buf, 0); |
96baa820 | 11018 | |
ff52c073 | 11019 | switch (m_features.packet_ok (rs->buf, PACKET_Z1)) |
d471ea57 AC |
11020 | { |
11021 | case PACKET_ERROR: | |
dd61ec5c | 11022 | if (rs->buf[1] == '.') |
dda83cd7 SM |
11023 | { |
11024 | message = strchr (&rs->buf[2], '.'); | |
11025 | if (message) | |
11026 | error (_("Remote failure reply: %s"), message + 1); | |
11027 | } | |
dd61ec5c | 11028 | return -1; |
d471ea57 AC |
11029 | case PACKET_UNKNOWN: |
11030 | return -1; | |
11031 | case PACKET_OK: | |
11032 | return 0; | |
11033 | } | |
f34652de | 11034 | internal_error (_("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
11035 | } |
11036 | ||
d471ea57 | 11037 | |
f6ac5f3d PA |
11038 | int |
11039 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
11040 | struct bp_target_info *bp_tgt) | |
96baa820 | 11041 | { |
8181d85f | 11042 | CORE_ADDR addr; |
d01949b6 | 11043 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
11044 | char *p = rs->buf.data (); |
11045 | char *endbuf = p + get_remote_packet_size (); | |
c8189ed1 | 11046 | |
ff52c073 | 11047 | if (m_features.packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 11048 | return -1; |
802188a7 | 11049 | |
28439a30 PA |
11050 | /* Make sure the remote is pointing at the right process, if |
11051 | necessary. */ | |
11052 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
11053 | set_general_process (); | |
11054 | ||
96baa820 JM |
11055 | *(p++) = 'z'; |
11056 | *(p++) = '1'; | |
11057 | *(p++) = ','; | |
802188a7 | 11058 | |
8181d85f | 11059 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 11060 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 11061 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 11062 | |
6d820c5c | 11063 | putpkt (rs->buf); |
8d64371b | 11064 | getpkt (&rs->buf, 0); |
802188a7 | 11065 | |
ff52c073 | 11066 | switch (m_features.packet_ok (rs->buf, PACKET_Z1)) |
d471ea57 AC |
11067 | { |
11068 | case PACKET_ERROR: | |
11069 | case PACKET_UNKNOWN: | |
11070 | return -1; | |
11071 | case PACKET_OK: | |
11072 | return 0; | |
11073 | } | |
f34652de | 11074 | internal_error (_("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 11075 | } |
96baa820 | 11076 | |
4a5e7a5b PA |
11077 | /* Verify memory using the "qCRC:" request. */ |
11078 | ||
f6ac5f3d PA |
11079 | int |
11080 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
11081 | { |
11082 | struct remote_state *rs = get_remote_state (); | |
11083 | unsigned long host_crc, target_crc; | |
11084 | char *tmp; | |
11085 | ||
936d2992 PA |
11086 | /* It doesn't make sense to use qCRC if the remote target is |
11087 | connected but not running. */ | |
55f6301a | 11088 | if (target_has_execution () |
ff52c073 | 11089 | && m_features.packet_support (PACKET_qCRC) != PACKET_DISABLE) |
936d2992 PA |
11090 | { |
11091 | enum packet_result result; | |
28439a30 | 11092 | |
936d2992 PA |
11093 | /* Make sure the remote is pointing at the right process. */ |
11094 | set_general_process (); | |
4a5e7a5b | 11095 | |
936d2992 | 11096 | /* FIXME: assumes lma can fit into long. */ |
8d64371b | 11097 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qCRC:%lx,%lx", |
936d2992 PA |
11098 | (long) lma, (long) size); |
11099 | putpkt (rs->buf); | |
4a5e7a5b | 11100 | |
936d2992 PA |
11101 | /* Be clever; compute the host_crc before waiting for target |
11102 | reply. */ | |
11103 | host_crc = xcrc32 (data, size, 0xffffffff); | |
11104 | ||
8d64371b | 11105 | getpkt (&rs->buf, 0); |
4a5e7a5b | 11106 | |
ff52c073 | 11107 | result = m_features.packet_ok (rs->buf, PACKET_qCRC); |
936d2992 PA |
11108 | if (result == PACKET_ERROR) |
11109 | return -1; | |
11110 | else if (result == PACKET_OK) | |
11111 | { | |
11112 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
11113 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 11114 | |
936d2992 PA |
11115 | return (host_crc == target_crc); |
11116 | } | |
11117 | } | |
4a5e7a5b | 11118 | |
f6ac5f3d | 11119 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
11120 | } |
11121 | ||
c906108c SS |
11122 | /* compare-sections command |
11123 | ||
11124 | With no arguments, compares each loadable section in the exec bfd | |
11125 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 11126 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 11127 | |
c906108c | 11128 | static void |
ac88e2de | 11129 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
11130 | { |
11131 | asection *s; | |
ce359b09 | 11132 | const char *sectname; |
c906108c SS |
11133 | bfd_size_type size; |
11134 | bfd_vma lma; | |
11135 | int matched = 0; | |
11136 | int mismatched = 0; | |
4a5e7a5b | 11137 | int res; |
95cf3b38 | 11138 | int read_only = 0; |
c906108c | 11139 | |
7e10abd1 | 11140 | if (!current_program_space->exec_bfd ()) |
8a3fe4f8 | 11141 | error (_("command cannot be used without an exec file")); |
c906108c | 11142 | |
95cf3b38 DT |
11143 | if (args != NULL && strcmp (args, "-r") == 0) |
11144 | { | |
11145 | read_only = 1; | |
11146 | args = NULL; | |
11147 | } | |
11148 | ||
7e10abd1 | 11149 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
c906108c SS |
11150 | { |
11151 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 11152 | continue; /* Skip non-loadable section. */ |
c906108c | 11153 | |
95cf3b38 DT |
11154 | if (read_only && (s->flags & SEC_READONLY) == 0) |
11155 | continue; /* Skip writeable sections */ | |
11156 | ||
fd361982 | 11157 | size = bfd_section_size (s); |
c906108c | 11158 | if (size == 0) |
0df8b418 | 11159 | continue; /* Skip zero-length section. */ |
c906108c | 11160 | |
fd361982 | 11161 | sectname = bfd_section_name (s); |
c906108c | 11162 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 11163 | continue; /* Not the section selected by user. */ |
c906108c | 11164 | |
0df8b418 | 11165 | matched = 1; /* Do this section. */ |
c906108c | 11166 | lma = s->lma; |
c906108c | 11167 | |
b80406ac | 11168 | gdb::byte_vector sectdata (size); |
7e10abd1 TT |
11169 | bfd_get_section_contents (current_program_space->exec_bfd (), s, |
11170 | sectdata.data (), 0, size); | |
c906108c | 11171 | |
b80406ac | 11172 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
11173 | |
11174 | if (res == -1) | |
5af949e3 | 11175 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
11176 | paddress (target_gdbarch (), lma), |
11177 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 11178 | |
6cb06a8c TT |
11179 | gdb_printf ("Section %s, range %s -- %s: ", sectname, |
11180 | paddress (target_gdbarch (), lma), | |
11181 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 11182 | if (res) |
6cb06a8c | 11183 | gdb_printf ("matched.\n"); |
c906108c | 11184 | else |
c5aa993b | 11185 | { |
6cb06a8c | 11186 | gdb_printf ("MIS-MATCHED!\n"); |
c5aa993b JM |
11187 | mismatched++; |
11188 | } | |
c906108c SS |
11189 | } |
11190 | if (mismatched > 0) | |
936d2992 | 11191 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 11192 | the loaded file\n")); |
c906108c | 11193 | if (args && !matched) |
6cb06a8c | 11194 | gdb_printf (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
11195 | } |
11196 | ||
0e7f50da UW |
11197 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
11198 | into remote target. The number of bytes written to the remote | |
11199 | target is returned, or -1 for error. */ | |
11200 | ||
6b8edb51 PA |
11201 | target_xfer_status |
11202 | remote_target::remote_write_qxfer (const char *object_name, | |
11203 | const char *annex, const gdb_byte *writebuf, | |
11204 | ULONGEST offset, LONGEST len, | |
11205 | ULONGEST *xfered_len, | |
ff52c073 | 11206 | const unsigned int which_packet) |
0e7f50da UW |
11207 | { |
11208 | int i, buf_len; | |
11209 | ULONGEST n; | |
0e7f50da UW |
11210 | struct remote_state *rs = get_remote_state (); |
11211 | int max_size = get_memory_write_packet_size (); | |
11212 | ||
ff52c073 | 11213 | if (m_features.packet_support (which_packet) == PACKET_DISABLE) |
2ed4b548 | 11214 | return TARGET_XFER_E_IO; |
0e7f50da UW |
11215 | |
11216 | /* Insert header. */ | |
8d64371b | 11217 | i = snprintf (rs->buf.data (), max_size, |
0e7f50da UW |
11218 | "qXfer:%s:write:%s:%s:", |
11219 | object_name, annex ? annex : "", | |
11220 | phex_nz (offset, sizeof offset)); | |
11221 | max_size -= (i + 1); | |
11222 | ||
11223 | /* Escape as much data as fits into rs->buf. */ | |
11224 | buf_len = remote_escape_output | |
8d64371b | 11225 | (writebuf, len, 1, (gdb_byte *) rs->buf.data () + i, &max_size, max_size); |
0e7f50da | 11226 | |
8d64371b TT |
11227 | if (putpkt_binary (rs->buf.data (), i + buf_len) < 0 |
11228 | || getpkt_sane (&rs->buf, 0) < 0 | |
ff52c073 | 11229 | || m_features.packet_ok (rs->buf, which_packet) != PACKET_OK) |
2ed4b548 | 11230 | return TARGET_XFER_E_IO; |
0e7f50da | 11231 | |
8d64371b | 11232 | unpack_varlen_hex (rs->buf.data (), &n); |
9b409511 YQ |
11233 | |
11234 | *xfered_len = n; | |
92ffd475 | 11235 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
11236 | } |
11237 | ||
0876f84a DJ |
11238 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
11239 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
11240 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
11241 | The number of bytes read may be less than LEN without indicating an | |
11242 | EOF. PACKET is checked and updated to indicate whether the remote | |
11243 | target supports this object. */ | |
11244 | ||
6b8edb51 PA |
11245 | target_xfer_status |
11246 | remote_target::remote_read_qxfer (const char *object_name, | |
11247 | const char *annex, | |
11248 | gdb_byte *readbuf, ULONGEST offset, | |
11249 | LONGEST len, | |
11250 | ULONGEST *xfered_len, | |
ff52c073 | 11251 | const unsigned int which_packet) |
0876f84a | 11252 | { |
0876f84a | 11253 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
11254 | LONGEST i, n, packet_len; |
11255 | ||
ff52c073 | 11256 | if (m_features.packet_support (which_packet) == PACKET_DISABLE) |
2ed4b548 | 11257 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11258 | |
11259 | /* Check whether we've cached an end-of-object packet that matches | |
11260 | this request. */ | |
8e88304f | 11261 | if (rs->finished_object) |
0876f84a | 11262 | { |
8e88304f TT |
11263 | if (strcmp (object_name, rs->finished_object) == 0 |
11264 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
11265 | && offset == rs->finished_offset) | |
9b409511 YQ |
11266 | return TARGET_XFER_EOF; |
11267 | ||
0876f84a DJ |
11268 | |
11269 | /* Otherwise, we're now reading something different. Discard | |
11270 | the cache. */ | |
8e88304f TT |
11271 | xfree (rs->finished_object); |
11272 | xfree (rs->finished_annex); | |
11273 | rs->finished_object = NULL; | |
11274 | rs->finished_annex = NULL; | |
0876f84a DJ |
11275 | } |
11276 | ||
11277 | /* Request only enough to fit in a single packet. The actual data | |
11278 | may not, since we don't know how much of it will need to be escaped; | |
11279 | the target is free to respond with slightly less data. We subtract | |
11280 | five to account for the response type and the protocol frame. */ | |
768adc05 | 11281 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
8d64371b TT |
11282 | snprintf (rs->buf.data (), get_remote_packet_size () - 4, |
11283 | "qXfer:%s:read:%s:%s,%s", | |
0876f84a DJ |
11284 | object_name, annex ? annex : "", |
11285 | phex_nz (offset, sizeof offset), | |
11286 | phex_nz (n, sizeof n)); | |
11287 | i = putpkt (rs->buf); | |
11288 | if (i < 0) | |
2ed4b548 | 11289 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11290 | |
11291 | rs->buf[0] = '\0'; | |
8d64371b | 11292 | packet_len = getpkt_sane (&rs->buf, 0); |
ff52c073 CS |
11293 | if (packet_len < 0 |
11294 | || m_features.packet_ok (rs->buf, which_packet) != PACKET_OK) | |
2ed4b548 | 11295 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11296 | |
11297 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8d64371b | 11298 | error (_("Unknown remote qXfer reply: %s"), rs->buf.data ()); |
0876f84a DJ |
11299 | |
11300 | /* 'm' means there is (or at least might be) more data after this | |
11301 | batch. That does not make sense unless there's at least one byte | |
11302 | of data in this reply. */ | |
11303 | if (rs->buf[0] == 'm' && packet_len == 1) | |
11304 | error (_("Remote qXfer reply contained no data.")); | |
11305 | ||
11306 | /* Got some data. */ | |
8d64371b | 11307 | i = remote_unescape_input ((gdb_byte *) rs->buf.data () + 1, |
bc20a4af | 11308 | packet_len - 1, readbuf, n); |
0876f84a DJ |
11309 | |
11310 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
11311 | or possibly empty. If we have the final block of a non-empty |
11312 | object, record this fact to bypass a subsequent partial read. */ | |
11313 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 11314 | { |
8e88304f TT |
11315 | rs->finished_object = xstrdup (object_name); |
11316 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
11317 | rs->finished_offset = offset + i; | |
0876f84a DJ |
11318 | } |
11319 | ||
9b409511 YQ |
11320 | if (i == 0) |
11321 | return TARGET_XFER_EOF; | |
11322 | else | |
11323 | { | |
11324 | *xfered_len = i; | |
11325 | return TARGET_XFER_OK; | |
11326 | } | |
0876f84a DJ |
11327 | } |
11328 | ||
f6ac5f3d PA |
11329 | enum target_xfer_status |
11330 | remote_target::xfer_partial (enum target_object object, | |
11331 | const char *annex, gdb_byte *readbuf, | |
11332 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
11333 | ULONGEST *xfered_len) | |
c906108c | 11334 | { |
82f73884 | 11335 | struct remote_state *rs; |
c906108c | 11336 | int i; |
6d820c5c | 11337 | char *p2; |
1e3ff5ad | 11338 | char query_type; |
124e13d9 | 11339 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 11340 | |
e6e4e701 | 11341 | set_remote_traceframe (); |
82f73884 PA |
11342 | set_general_thread (inferior_ptid); |
11343 | ||
11344 | rs = get_remote_state (); | |
11345 | ||
b2182ed2 | 11346 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
11347 | if (object == TARGET_OBJECT_MEMORY) |
11348 | { | |
2d717e4f DJ |
11349 | /* If the remote target is connected but not running, we should |
11350 | pass this request down to a lower stratum (e.g. the executable | |
11351 | file). */ | |
55f6301a | 11352 | if (!target_has_execution ()) |
9b409511 | 11353 | return TARGET_XFER_EOF; |
2d717e4f | 11354 | |
21e3b9b9 | 11355 | if (writebuf != NULL) |
124e13d9 SM |
11356 | return remote_write_bytes (offset, writebuf, len, unit_size, |
11357 | xfered_len); | |
21e3b9b9 | 11358 | else |
6b8edb51 | 11359 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 11360 | xfered_len); |
21e3b9b9 DJ |
11361 | } |
11362 | ||
4aa995e1 PA |
11363 | /* Handle extra signal info using qxfer packets. */ |
11364 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
11365 | { | |
11366 | if (readbuf) | |
f6ac5f3d | 11367 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
ff52c073 | 11368 | xfered_len, PACKET_qXfer_siginfo_read); |
4aa995e1 | 11369 | else |
ff52c073 CS |
11370 | return remote_write_qxfer ("siginfo", annex, writebuf, offset, len, |
11371 | xfered_len, PACKET_qXfer_siginfo_write); | |
4aa995e1 PA |
11372 | } |
11373 | ||
0fb4aa4b PA |
11374 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
11375 | { | |
11376 | if (readbuf) | |
f6ac5f3d | 11377 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 11378 | readbuf, offset, len, xfered_len, |
ff52c073 | 11379 | PACKET_qXfer_statictrace_read); |
0fb4aa4b | 11380 | else |
2ed4b548 | 11381 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
11382 | } |
11383 | ||
a76d924d DJ |
11384 | /* Only handle flash writes. */ |
11385 | if (writebuf != NULL) | |
11386 | { | |
a76d924d DJ |
11387 | switch (object) |
11388 | { | |
11389 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 11390 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 11391 | writebuf); |
a76d924d DJ |
11392 | |
11393 | default: | |
2ed4b548 | 11394 | return TARGET_XFER_E_IO; |
a76d924d DJ |
11395 | } |
11396 | } | |
4b8a223f | 11397 | |
1e3ff5ad AC |
11398 | /* Map pre-existing objects onto letters. DO NOT do this for new |
11399 | objects!!! Instead specify new query packets. */ | |
11400 | switch (object) | |
c906108c | 11401 | { |
1e3ff5ad AC |
11402 | case TARGET_OBJECT_AVR: |
11403 | query_type = 'R'; | |
11404 | break; | |
802188a7 RM |
11405 | |
11406 | case TARGET_OBJECT_AUXV: | |
0876f84a | 11407 | gdb_assert (annex == NULL); |
ff52c073 CS |
11408 | return remote_read_qxfer |
11409 | ("auxv", annex, readbuf, offset, len, xfered_len, PACKET_qXfer_auxv); | |
802188a7 | 11410 | |
23181151 DJ |
11411 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
11412 | return remote_read_qxfer | |
f6ac5f3d | 11413 | ("features", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11414 | PACKET_qXfer_features); |
23181151 | 11415 | |
cfa9d6d9 DJ |
11416 | case TARGET_OBJECT_LIBRARIES: |
11417 | return remote_read_qxfer | |
f6ac5f3d | 11418 | ("libraries", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11419 | PACKET_qXfer_libraries); |
cfa9d6d9 | 11420 | |
2268b414 JK |
11421 | case TARGET_OBJECT_LIBRARIES_SVR4: |
11422 | return remote_read_qxfer | |
f6ac5f3d | 11423 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11424 | PACKET_qXfer_libraries_svr4); |
2268b414 | 11425 | |
fd79ecee DJ |
11426 | case TARGET_OBJECT_MEMORY_MAP: |
11427 | gdb_assert (annex == NULL); | |
ff52c073 CS |
11428 | return remote_read_qxfer |
11429 | ("memory-map", annex, readbuf, offset, len, xfered_len, | |
11430 | PACKET_qXfer_memory_map); | |
fd79ecee | 11431 | |
07e059b5 VP |
11432 | case TARGET_OBJECT_OSDATA: |
11433 | /* Should only get here if we're connected. */ | |
5d93a237 | 11434 | gdb_assert (rs->remote_desc); |
07e059b5 | 11435 | return remote_read_qxfer |
f6ac5f3d | 11436 | ("osdata", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11437 | PACKET_qXfer_osdata); |
07e059b5 | 11438 | |
dc146f7c VP |
11439 | case TARGET_OBJECT_THREADS: |
11440 | gdb_assert (annex == NULL); | |
ff52c073 CS |
11441 | return remote_read_qxfer |
11442 | ("threads", annex, readbuf, offset, len, xfered_len, | |
11443 | PACKET_qXfer_threads); | |
dc146f7c | 11444 | |
b3b9301e PA |
11445 | case TARGET_OBJECT_TRACEFRAME_INFO: |
11446 | gdb_assert (annex == NULL); | |
11447 | return remote_read_qxfer | |
f6ac5f3d | 11448 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
ff52c073 | 11449 | PACKET_qXfer_traceframe_info); |
78d85199 YQ |
11450 | |
11451 | case TARGET_OBJECT_FDPIC: | |
ff52c073 CS |
11452 | return remote_read_qxfer |
11453 | ("fdpic", annex, readbuf, offset, len, xfered_len, PACKET_qXfer_fdpic); | |
169081d0 TG |
11454 | |
11455 | case TARGET_OBJECT_OPENVMS_UIB: | |
ff52c073 CS |
11456 | return remote_read_qxfer |
11457 | ("uib", annex, readbuf, offset, len, xfered_len, PACKET_qXfer_uib); | |
169081d0 | 11458 | |
9accd112 | 11459 | case TARGET_OBJECT_BTRACE: |
ff52c073 CS |
11460 | return remote_read_qxfer |
11461 | ("btrace", annex, readbuf, offset, len, xfered_len, | |
11462 | PACKET_qXfer_btrace); | |
9accd112 | 11463 | |
f4abbc16 | 11464 | case TARGET_OBJECT_BTRACE_CONF: |
ff52c073 CS |
11465 | return remote_read_qxfer |
11466 | ("btrace-conf", annex, readbuf, offset, len, xfered_len, | |
11467 | PACKET_qXfer_btrace_conf); | |
f4abbc16 | 11468 | |
c78fa86a | 11469 | case TARGET_OBJECT_EXEC_FILE: |
ff52c073 CS |
11470 | return remote_read_qxfer |
11471 | ("exec-file", annex, readbuf, offset, len, xfered_len, | |
11472 | PACKET_qXfer_exec_file); | |
c78fa86a | 11473 | |
1e3ff5ad | 11474 | default: |
2ed4b548 | 11475 | return TARGET_XFER_E_IO; |
c906108c SS |
11476 | } |
11477 | ||
0df8b418 | 11478 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 11479 | large enough let the caller deal with it. */ |
ea9c271d | 11480 | if (len < get_remote_packet_size ()) |
2ed4b548 | 11481 | return TARGET_XFER_E_IO; |
ea9c271d | 11482 | len = get_remote_packet_size (); |
1e3ff5ad | 11483 | |
23860348 | 11484 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 11485 | if (!rs->remote_desc) |
8a3fe4f8 | 11486 | error (_("remote query is only available after target open")); |
c906108c | 11487 | |
1e3ff5ad | 11488 | gdb_assert (annex != NULL); |
4b8a223f | 11489 | gdb_assert (readbuf != NULL); |
c906108c | 11490 | |
8d64371b | 11491 | p2 = rs->buf.data (); |
c906108c SS |
11492 | *p2++ = 'q'; |
11493 | *p2++ = query_type; | |
11494 | ||
23860348 MS |
11495 | /* We used one buffer char for the remote protocol q command and |
11496 | another for the query type. As the remote protocol encapsulation | |
11497 | uses 4 chars plus one extra in case we are debugging | |
11498 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
11499 | string. */ | |
c906108c | 11500 | i = 0; |
ea9c271d | 11501 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11502 | { |
1e3ff5ad AC |
11503 | /* Bad caller may have sent forbidden characters. */ |
11504 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11505 | *p2++ = annex[i]; | |
c906108c SS |
11506 | i++; |
11507 | } | |
1e3ff5ad AC |
11508 | *p2 = '\0'; |
11509 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11510 | |
6d820c5c | 11511 | i = putpkt (rs->buf); |
c5aa993b | 11512 | if (i < 0) |
2ed4b548 | 11513 | return TARGET_XFER_E_IO; |
c906108c | 11514 | |
8d64371b TT |
11515 | getpkt (&rs->buf, 0); |
11516 | strcpy ((char *) readbuf, rs->buf.data ()); | |
c906108c | 11517 | |
9b409511 | 11518 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11519 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11520 | } |
11521 | ||
09c98b44 DB |
11522 | /* Implementation of to_get_memory_xfer_limit. */ |
11523 | ||
f6ac5f3d PA |
11524 | ULONGEST |
11525 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11526 | { |
11527 | return get_memory_write_packet_size (); | |
11528 | } | |
11529 | ||
f6ac5f3d PA |
11530 | int |
11531 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11532 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11533 | CORE_ADDR *found_addrp) | |
08388c79 | 11534 | { |
f5656ead | 11535 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
11536 | struct remote_state *rs = get_remote_state (); |
11537 | int max_size = get_memory_write_packet_size (); | |
ff52c073 | 11538 | |
0df8b418 MS |
11539 | /* Number of packet bytes used to encode the pattern; |
11540 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11541 | int escaped_pattern_len; |
0df8b418 | 11542 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11543 | int used_pattern_len; |
11544 | int i; | |
11545 | int found; | |
11546 | ULONGEST found_addr; | |
11547 | ||
4a72de73 TT |
11548 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
11549 | { | |
11550 | return (target_read (this, TARGET_OBJECT_MEMORY, NULL, result, addr, len) | |
11551 | == len); | |
11552 | }; | |
11553 | ||
7cc244de | 11554 | /* Don't go to the target if we don't have to. This is done before |
ff52c073 CS |
11555 | checking packet_support to avoid the possibility that a success for this |
11556 | edge case means the facility works in general. */ | |
08388c79 DE |
11557 | if (pattern_len > search_space_len) |
11558 | return 0; | |
11559 | if (pattern_len == 0) | |
11560 | { | |
11561 | *found_addrp = start_addr; | |
11562 | return 1; | |
11563 | } | |
11564 | ||
11565 | /* If we already know the packet isn't supported, fall back to the simple | |
11566 | way of searching memory. */ | |
11567 | ||
ff52c073 | 11568 | if (m_features.packet_support (PACKET_qSearch_memory) == PACKET_DISABLE) |
08388c79 DE |
11569 | { |
11570 | /* Target doesn't provided special support, fall back and use the | |
11571 | standard support (copy memory and do the search here). */ | |
4a72de73 | 11572 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11573 | pattern, pattern_len, found_addrp); |
11574 | } | |
11575 | ||
28439a30 PA |
11576 | /* Make sure the remote is pointing at the right process. */ |
11577 | set_general_process (); | |
11578 | ||
08388c79 | 11579 | /* Insert header. */ |
8d64371b | 11580 | i = snprintf (rs->buf.data (), max_size, |
08388c79 | 11581 | "qSearch:memory:%s;%s;", |
5af949e3 | 11582 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11583 | phex_nz (search_space_len, sizeof (search_space_len))); |
11584 | max_size -= (i + 1); | |
11585 | ||
11586 | /* Escape as much data as fits into rs->buf. */ | |
11587 | escaped_pattern_len = | |
8d64371b TT |
11588 | remote_escape_output (pattern, pattern_len, 1, |
11589 | (gdb_byte *) rs->buf.data () + i, | |
08388c79 DE |
11590 | &used_pattern_len, max_size); |
11591 | ||
11592 | /* Bail if the pattern is too large. */ | |
11593 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11594 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 | 11595 | |
8d64371b TT |
11596 | if (putpkt_binary (rs->buf.data (), i + escaped_pattern_len) < 0 |
11597 | || getpkt_sane (&rs->buf, 0) < 0 | |
ff52c073 | 11598 | || m_features.packet_ok (rs->buf, PACKET_qSearch_memory) != PACKET_OK) |
08388c79 DE |
11599 | { |
11600 | /* The request may not have worked because the command is not | |
11601 | supported. If so, fall back to the simple way. */ | |
ff52c073 | 11602 | if (m_features.packet_support (PACKET_qSearch_memory) == PACKET_DISABLE) |
08388c79 | 11603 | { |
4a72de73 | 11604 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11605 | pattern, pattern_len, found_addrp); |
11606 | } | |
11607 | return -1; | |
11608 | } | |
11609 | ||
11610 | if (rs->buf[0] == '0') | |
11611 | found = 0; | |
11612 | else if (rs->buf[0] == '1') | |
11613 | { | |
11614 | found = 1; | |
11615 | if (rs->buf[1] != ',') | |
8d64371b TT |
11616 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
11617 | unpack_varlen_hex (&rs->buf[2], &found_addr); | |
08388c79 DE |
11618 | *found_addrp = found_addr; |
11619 | } | |
11620 | else | |
8d64371b | 11621 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
08388c79 DE |
11622 | |
11623 | return found; | |
11624 | } | |
11625 | ||
f6ac5f3d PA |
11626 | void |
11627 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11628 | { |
d01949b6 | 11629 | struct remote_state *rs = get_remote_state (); |
8d64371b | 11630 | char *p = rs->buf.data (); |
96baa820 | 11631 | |
5d93a237 | 11632 | if (!rs->remote_desc) |
8a3fe4f8 | 11633 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11634 | |
23860348 | 11635 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11636 | if (command == NULL) |
11637 | command = ""; | |
11638 | ||
23860348 | 11639 | /* The query prefix. */ |
8d64371b TT |
11640 | strcpy (rs->buf.data (), "qRcmd,"); |
11641 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 | 11642 | |
8d64371b | 11643 | if ((strlen (rs->buf.data ()) + strlen (command) * 2 + 8/*misc*/) |
3e43a32a | 11644 | > get_remote_packet_size ()) |
8a3fe4f8 | 11645 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11646 | |
23860348 | 11647 | /* Encode the actual command. */ |
a30bf1f1 | 11648 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11649 | |
6d820c5c | 11650 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11651 | error (_("Communication problem with target.")); |
96baa820 JM |
11652 | |
11653 | /* get/display the response */ | |
11654 | while (1) | |
11655 | { | |
2e9f7625 DJ |
11656 | char *buf; |
11657 | ||
00bf0b85 | 11658 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11659 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11660 | rs->buf[0] = '\0'; |
8d64371b | 11661 | if (getpkt_sane (&rs->buf, 0) == -1) |
dda83cd7 SM |
11662 | { |
11663 | /* Timeout. Continue to (try to) read responses. | |
11664 | This is better than stopping with an error, assuming the stub | |
11665 | is still executing the (long) monitor command. | |
11666 | If needed, the user can interrupt gdb using C-c, obtaining | |
11667 | an effect similar to stop on timeout. */ | |
11668 | continue; | |
11669 | } | |
8d64371b | 11670 | buf = rs->buf.data (); |
96baa820 | 11671 | if (buf[0] == '\0') |
8a3fe4f8 | 11672 | error (_("Target does not support this command.")); |
96baa820 JM |
11673 | if (buf[0] == 'O' && buf[1] != 'K') |
11674 | { | |
23860348 | 11675 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11676 | continue; |
11677 | } | |
11678 | if (strcmp (buf, "OK") == 0) | |
11679 | break; | |
7be570e7 | 11680 | if (strlen (buf) == 3 && buf[0] == 'E' |
d5ce6f2d | 11681 | && isxdigit (buf[1]) && isxdigit (buf[2])) |
7be570e7 | 11682 | { |
8a3fe4f8 | 11683 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11684 | } |
96baa820 JM |
11685 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11686 | { | |
11687 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11688 | |
a11ac3b3 | 11689 | gdb_putc (c, outbuf); |
96baa820 JM |
11690 | } |
11691 | break; | |
11692 | } | |
11693 | } | |
11694 | ||
f6ac5f3d PA |
11695 | std::vector<mem_region> |
11696 | remote_target::memory_map () | |
fd79ecee | 11697 | { |
a664f67e | 11698 | std::vector<mem_region> result; |
9018be22 | 11699 | gdb::optional<gdb::char_vector> text |
328d42d8 SM |
11700 | = target_read_stralloc (current_inferior ()->top_target (), |
11701 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
fd79ecee DJ |
11702 | |
11703 | if (text) | |
9018be22 | 11704 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11705 | |
11706 | return result; | |
11707 | } | |
11708 | ||
e5b176f2 AB |
11709 | /* Set of callbacks used to implement the 'maint packet' command. */ |
11710 | ||
11711 | struct cli_packet_command_callbacks : public send_remote_packet_callbacks | |
c906108c | 11712 | { |
e5b176f2 AB |
11713 | /* Called before the packet is sent. BUF is the packet content before |
11714 | the protocol specific prefix, suffix, and escaping is added. */ | |
c906108c | 11715 | |
e5b176f2 AB |
11716 | void sending (gdb::array_view<const char> &buf) override |
11717 | { | |
0426ad51 | 11718 | gdb_puts ("sending: "); |
e5b176f2 | 11719 | print_packet (buf); |
0426ad51 | 11720 | gdb_puts ("\n"); |
e5b176f2 | 11721 | } |
c906108c | 11722 | |
e5b176f2 AB |
11723 | /* Called with BUF, the reply from the remote target. */ |
11724 | ||
11725 | void received (gdb::array_view<const char> &buf) override | |
11726 | { | |
0426ad51 | 11727 | gdb_puts ("received: \""); |
e5b176f2 | 11728 | print_packet (buf); |
0426ad51 | 11729 | gdb_puts ("\"\n"); |
e5b176f2 AB |
11730 | } |
11731 | ||
11732 | private: | |
11733 | ||
11734 | /* Print BUF o gdb_stdout. Any non-printable bytes in BUF are printed as | |
11735 | '\x??' with '??' replaced by the hexadecimal value of the byte. */ | |
11736 | ||
11737 | static void | |
11738 | print_packet (gdb::array_view<const char> &buf) | |
11739 | { | |
11740 | string_file stb; | |
11741 | ||
11742 | for (int i = 0; i < buf.size (); ++i) | |
11743 | { | |
11744 | gdb_byte c = buf[i]; | |
11745 | if (isprint (c)) | |
a11ac3b3 | 11746 | gdb_putc (c, &stb); |
e5b176f2 | 11747 | else |
6cb06a8c | 11748 | gdb_printf (&stb, "\\x%02x", (unsigned char) c); |
e5b176f2 AB |
11749 | } |
11750 | ||
0426ad51 | 11751 | gdb_puts (stb.string ().c_str ()); |
e5b176f2 AB |
11752 | } |
11753 | }; | |
11754 | ||
11755 | /* See remote.h. */ | |
6b8edb51 PA |
11756 | |
11757 | void | |
e5b176f2 AB |
11758 | send_remote_packet (gdb::array_view<const char> &buf, |
11759 | send_remote_packet_callbacks *callbacks) | |
6b8edb51 | 11760 | { |
e5b176f2 AB |
11761 | if (buf.size () == 0 || buf.data ()[0] == '\0') |
11762 | error (_("a remote packet must not be empty")); | |
c906108c | 11763 | |
e5b176f2 AB |
11764 | remote_target *remote = get_current_remote_target (); |
11765 | if (remote == nullptr) | |
11766 | error (_("packets can only be sent to a remote target")); | |
c906108c | 11767 | |
e5b176f2 | 11768 | callbacks->sending (buf); |
6b8edb51 | 11769 | |
e5b176f2 AB |
11770 | remote->putpkt_binary (buf.data (), buf.size ()); |
11771 | remote_state *rs = remote->get_remote_state (); | |
11772 | int bytes = remote->getpkt_sane (&rs->buf, 0); | |
11773 | ||
11774 | if (bytes < 0) | |
11775 | error (_("error while fetching packet from remote target")); | |
11776 | ||
11777 | gdb::array_view<const char> view (&rs->buf[0], bytes); | |
11778 | callbacks->received (view); | |
11779 | } | |
11780 | ||
11781 | /* Entry point for the 'maint packet' command. */ | |
11782 | ||
11783 | static void | |
11784 | cli_packet_command (const char *args, int from_tty) | |
11785 | { | |
11786 | cli_packet_command_callbacks cb; | |
11787 | gdb::array_view<const char> view | |
11788 | = gdb::make_array_view (args, args == nullptr ? 0 : strlen (args)); | |
11789 | send_remote_packet (view, &cb); | |
c906108c SS |
11790 | } |
11791 | ||
11792 | #if 0 | |
23860348 | 11793 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11794 | |
a14ed312 | 11795 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11796 | |
a14ed312 | 11797 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11798 | |
a14ed312 | 11799 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11800 | |
a14ed312 | 11801 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11802 | |
23860348 | 11803 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11804 | |
a14ed312 | 11805 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11806 | |
23860348 | 11807 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11808 | |
a14ed312 | 11809 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11810 | |
a14ed312 | 11811 | static void init_remote_threadtests (void); |
c906108c | 11812 | |
23860348 | 11813 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11814 | |
11815 | static void | |
0b39b52e | 11816 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11817 | { |
11818 | int sample_thread = SAMPLE_THREAD; | |
11819 | ||
6cb06a8c | 11820 | gdb_printf (_("Remote threadset test\n")); |
79d7f229 | 11821 | set_general_thread (sample_thread); |
c906108c SS |
11822 | } |
11823 | ||
11824 | ||
11825 | static void | |
0b39b52e | 11826 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11827 | { |
11828 | int sample_thread = SAMPLE_THREAD; | |
e99b03dc | 11829 | int pid = inferior_ptid.pid (); |
fd79271b | 11830 | ptid_t ptid = ptid_t (pid, sample_thread, 0); |
c906108c | 11831 | |
79d7f229 | 11832 | if (remote_thread_alive (ptid)) |
6cb06a8c | 11833 | gdb_printf ("PASS: Thread alive test\n"); |
c906108c | 11834 | else |
6cb06a8c | 11835 | gdb_printf ("FAIL: Thread alive test\n"); |
c906108c SS |
11836 | } |
11837 | ||
23860348 | 11838 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11839 | |
11840 | void | |
fba45db2 | 11841 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11842 | { |
11843 | char hexid[20]; | |
11844 | ||
405feb71 | 11845 | pack_threadid (&hexid[0], ref); /* Convert thread id into hex. */ |
c906108c | 11846 | hexid[16] = 0; |
6cb06a8c | 11847 | gdb_printf ("%s %s\n", title, (&hexid[0])); |
c906108c SS |
11848 | } |
11849 | ||
11850 | static void | |
0b39b52e | 11851 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11852 | { |
11853 | int startflag = 1; | |
11854 | threadref nextthread; | |
11855 | int done, result_count; | |
11856 | threadref threadlist[3]; | |
11857 | ||
6cb06a8c | 11858 | gdb_printf ("Remote Threadlist test\n"); |
c906108c SS |
11859 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, |
11860 | &result_count, &threadlist[0])) | |
6cb06a8c | 11861 | gdb_printf ("FAIL: threadlist test\n"); |
c906108c SS |
11862 | else |
11863 | { | |
11864 | threadref *scan = threadlist; | |
11865 | threadref *limit = scan + result_count; | |
11866 | ||
11867 | while (scan < limit) | |
11868 | output_threadid (" thread ", scan++); | |
11869 | } | |
11870 | } | |
11871 | ||
11872 | void | |
fba45db2 | 11873 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11874 | { |
11875 | output_threadid ("Threadid: ", &info->threadid); | |
6cb06a8c TT |
11876 | gdb_printf ("Name: %s\n ", info->shortname); |
11877 | gdb_printf ("State: %s\n", info->display); | |
11878 | gdb_printf ("other: %s\n\n", info->more_display); | |
c906108c SS |
11879 | } |
11880 | ||
11881 | int | |
fba45db2 | 11882 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11883 | { |
11884 | int result; | |
11885 | int set; | |
11886 | struct gdb_ext_thread_info threadinfo; | |
11887 | ||
11888 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11889 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11890 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11891 | display_thread_info (&threadinfo); | |
11892 | return result; | |
11893 | } | |
11894 | ||
11895 | static void | |
0b39b52e | 11896 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11897 | { |
11898 | int athread = SAMPLE_THREAD; | |
11899 | threadref thread; | |
11900 | int set; | |
11901 | ||
11902 | int_to_threadref (&thread, athread); | |
6cb06a8c | 11903 | gdb_printf ("Remote Threadinfo test\n"); |
c906108c | 11904 | if (!get_and_display_threadinfo (&thread)) |
6cb06a8c | 11905 | gdb_printf ("FAIL cannot get thread info\n"); |
c906108c SS |
11906 | } |
11907 | ||
11908 | static int | |
fba45db2 | 11909 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11910 | { |
11911 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11912 | return get_and_display_threadinfo (ref); | |
11913 | } | |
11914 | ||
11915 | static void | |
0b39b52e | 11916 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c | 11917 | { |
6cb06a8c | 11918 | gdb_printf ("Remote Threadlist update test\n"); |
c906108c SS |
11919 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); |
11920 | } | |
11921 | ||
11922 | static void | |
11923 | init_remote_threadtests (void) | |
11924 | { | |
3e43a32a MS |
11925 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11926 | _("Fetch and print the remote list of " | |
590042fc | 11927 | "thread identifiers, one pkt only.")); |
c906108c | 11928 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
590042fc | 11929 | _("Fetch and display info about one thread.")); |
c906108c | 11930 | add_com ("tset", class_obscure, threadset_test_cmd, |
590042fc | 11931 | _("Test setting to a different thread.")); |
c906108c | 11932 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
590042fc | 11933 | _("Iterate through updating all remote thread info.")); |
c906108c | 11934 | add_com ("talive", class_obscure, threadalive_test, |
590042fc | 11935 | _("Remote thread alive test.")); |
c906108c SS |
11936 | } |
11937 | ||
11938 | #endif /* 0 */ | |
11939 | ||
a068643d | 11940 | /* Convert a thread ID to a string. */ |
f3fb8c85 | 11941 | |
a068643d | 11942 | std::string |
f6ac5f3d | 11943 | remote_target::pid_to_str (ptid_t ptid) |
f3fb8c85 | 11944 | { |
d7e15655 | 11945 | if (ptid == null_ptid) |
7cee1e54 | 11946 | return normal_pid_to_str (ptid); |
0e998d96 | 11947 | else if (ptid.is_pid ()) |
ecd0ada5 PA |
11948 | { |
11949 | /* Printing an inferior target id. */ | |
11950 | ||
11951 | /* When multi-process extensions are off, there's no way in the | |
11952 | remote protocol to know the remote process id, if there's any | |
11953 | at all. There's one exception --- when we're connected with | |
11954 | target extended-remote, and we manually attached to a process | |
11955 | with "attach PID". We don't record anywhere a flag that | |
11956 | allows us to distinguish that case from the case of | |
11957 | connecting with extended-remote and the stub already being | |
11958 | attached to a process, and reporting yes to qAttached, hence | |
11959 | no smart special casing here. */ | |
ff52c073 | 11960 | if (!m_features.remote_multi_process_p ()) |
a068643d | 11961 | return "Remote target"; |
ecd0ada5 PA |
11962 | |
11963 | return normal_pid_to_str (ptid); | |
82f73884 | 11964 | } |
ecd0ada5 | 11965 | else |
79d7f229 | 11966 | { |
d7e15655 | 11967 | if (magic_null_ptid == ptid) |
a068643d | 11968 | return "Thread <main>"; |
ff52c073 | 11969 | else if (m_features.remote_multi_process_p ()) |
e38504b3 | 11970 | if (ptid.lwp () == 0) |
de0d863e DB |
11971 | return normal_pid_to_str (ptid); |
11972 | else | |
a068643d TT |
11973 | return string_printf ("Thread %d.%ld", |
11974 | ptid.pid (), ptid.lwp ()); | |
ecd0ada5 | 11975 | else |
a068643d | 11976 | return string_printf ("Thread %ld", ptid.lwp ()); |
79d7f229 | 11977 | } |
f3fb8c85 MS |
11978 | } |
11979 | ||
38691318 KB |
11980 | /* Get the address of the thread local variable in OBJFILE which is |
11981 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11982 | ||
f6ac5f3d PA |
11983 | CORE_ADDR |
11984 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11985 | CORE_ADDR offset) | |
38691318 | 11986 | { |
ff52c073 | 11987 | if (m_features.packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11988 | { |
11989 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11990 | char *p = rs->buf.data (); |
11991 | char *endp = p + get_remote_packet_size (); | |
571dd617 | 11992 | enum packet_result result; |
38691318 KB |
11993 | |
11994 | strcpy (p, "qGetTLSAddr:"); | |
11995 | p += strlen (p); | |
82f73884 | 11996 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11997 | *p++ = ','; |
11998 | p += hexnumstr (p, offset); | |
11999 | *p++ = ','; | |
12000 | p += hexnumstr (p, lm); | |
12001 | *p++ = '\0'; | |
12002 | ||
6d820c5c | 12003 | putpkt (rs->buf); |
8d64371b | 12004 | getpkt (&rs->buf, 0); |
ff52c073 | 12005 | result = m_features.packet_ok (rs->buf, PACKET_qGetTLSAddr); |
571dd617 | 12006 | if (result == PACKET_OK) |
38691318 | 12007 | { |
b926417a | 12008 | ULONGEST addr; |
38691318 | 12009 | |
8d64371b | 12010 | unpack_varlen_hex (rs->buf.data (), &addr); |
b926417a | 12011 | return addr; |
38691318 | 12012 | } |
571dd617 | 12013 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
12014 | throw_error (TLS_GENERIC_ERROR, |
12015 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 12016 | else |
109c3e39 AC |
12017 | throw_error (TLS_GENERIC_ERROR, |
12018 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
12019 | } |
12020 | else | |
109c3e39 AC |
12021 | throw_error (TLS_GENERIC_ERROR, |
12022 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
12023 | /* Not reached. */ |
12024 | return 0; | |
12025 | } | |
12026 | ||
711e434b PM |
12027 | /* Provide thread local base, i.e. Thread Information Block address. |
12028 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
12029 | ||
57810aa7 | 12030 | bool |
f6ac5f3d | 12031 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 12032 | { |
ff52c073 | 12033 | if (m_features.packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
12034 | { |
12035 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
12036 | char *p = rs->buf.data (); |
12037 | char *endp = p + get_remote_packet_size (); | |
711e434b PM |
12038 | enum packet_result result; |
12039 | ||
12040 | strcpy (p, "qGetTIBAddr:"); | |
12041 | p += strlen (p); | |
12042 | p = write_ptid (p, endp, ptid); | |
12043 | *p++ = '\0'; | |
12044 | ||
12045 | putpkt (rs->buf); | |
8d64371b | 12046 | getpkt (&rs->buf, 0); |
ff52c073 | 12047 | result = m_features.packet_ok (rs->buf, PACKET_qGetTIBAddr); |
711e434b PM |
12048 | if (result == PACKET_OK) |
12049 | { | |
b926417a | 12050 | ULONGEST val; |
8d64371b | 12051 | unpack_varlen_hex (rs->buf.data (), &val); |
711e434b | 12052 | if (addr) |
b926417a | 12053 | *addr = (CORE_ADDR) val; |
57810aa7 | 12054 | return true; |
711e434b PM |
12055 | } |
12056 | else if (result == PACKET_UNKNOWN) | |
12057 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
12058 | else | |
12059 | error (_("Remote target failed to process qGetTIBAddr request")); | |
12060 | } | |
12061 | else | |
12062 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
12063 | /* Not reached. */ | |
57810aa7 | 12064 | return false; |
711e434b PM |
12065 | } |
12066 | ||
29709017 DJ |
12067 | /* Support for inferring a target description based on the current |
12068 | architecture and the size of a 'g' packet. While the 'g' packet | |
12069 | can have any size (since optional registers can be left off the | |
12070 | end), some sizes are easily recognizable given knowledge of the | |
12071 | approximate architecture. */ | |
12072 | ||
12073 | struct remote_g_packet_guess | |
12074 | { | |
eefce37f TT |
12075 | remote_g_packet_guess (int bytes_, const struct target_desc *tdesc_) |
12076 | : bytes (bytes_), | |
12077 | tdesc (tdesc_) | |
12078 | { | |
12079 | } | |
12080 | ||
29709017 DJ |
12081 | int bytes; |
12082 | const struct target_desc *tdesc; | |
12083 | }; | |
29709017 | 12084 | |
cb275538 | 12085 | struct remote_g_packet_data |
29709017 | 12086 | { |
eefce37f | 12087 | std::vector<remote_g_packet_guess> guesses; |
29709017 DJ |
12088 | }; |
12089 | ||
cb275538 TT |
12090 | static const registry<gdbarch>::key<struct remote_g_packet_data> |
12091 | remote_g_packet_data_handle; | |
29709017 | 12092 | |
cb275538 TT |
12093 | static struct remote_g_packet_data * |
12094 | get_g_packet_data (struct gdbarch *gdbarch) | |
29709017 | 12095 | { |
cb275538 TT |
12096 | struct remote_g_packet_data *data |
12097 | = remote_g_packet_data_handle.get (gdbarch); | |
12098 | if (data == nullptr) | |
12099 | data = remote_g_packet_data_handle.emplace (gdbarch); | |
12100 | return data; | |
29709017 DJ |
12101 | } |
12102 | ||
12103 | void | |
12104 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
12105 | const struct target_desc *tdesc) | |
12106 | { | |
cb275538 | 12107 | struct remote_g_packet_data *data = get_g_packet_data (gdbarch); |
29709017 DJ |
12108 | |
12109 | gdb_assert (tdesc != NULL); | |
12110 | ||
eefce37f TT |
12111 | for (const remote_g_packet_guess &guess : data->guesses) |
12112 | if (guess.bytes == bytes) | |
f34652de | 12113 | internal_error (_("Duplicate g packet description added for size %d"), |
29709017 DJ |
12114 | bytes); |
12115 | ||
eefce37f | 12116 | data->guesses.emplace_back (bytes, tdesc); |
29709017 DJ |
12117 | } |
12118 | ||
eefce37f TT |
12119 | /* Return true if remote_read_description would do anything on this target |
12120 | and architecture, false otherwise. */ | |
d962ef82 | 12121 | |
eefce37f | 12122 | static bool |
d962ef82 DJ |
12123 | remote_read_description_p (struct target_ops *target) |
12124 | { | |
cb275538 | 12125 | struct remote_g_packet_data *data = get_g_packet_data (target_gdbarch ()); |
d962ef82 | 12126 | |
eefce37f | 12127 | return !data->guesses.empty (); |
d962ef82 DJ |
12128 | } |
12129 | ||
f6ac5f3d PA |
12130 | const struct target_desc * |
12131 | remote_target::read_description () | |
29709017 | 12132 | { |
cb275538 | 12133 | struct remote_g_packet_data *data = get_g_packet_data (target_gdbarch ()); |
29709017 | 12134 | |
d962ef82 DJ |
12135 | /* Do not try this during initial connection, when we do not know |
12136 | whether there is a running but stopped thread. */ | |
55f6301a | 12137 | if (!target_has_execution () || inferior_ptid == null_ptid) |
b6a8c27b | 12138 | return beneath ()->read_description (); |
d962ef82 | 12139 | |
eefce37f | 12140 | if (!data->guesses.empty ()) |
29709017 | 12141 | { |
29709017 DJ |
12142 | int bytes = send_g_packet (); |
12143 | ||
eefce37f TT |
12144 | for (const remote_g_packet_guess &guess : data->guesses) |
12145 | if (guess.bytes == bytes) | |
12146 | return guess.tdesc; | |
29709017 DJ |
12147 | |
12148 | /* We discard the g packet. A minor optimization would be to | |
12149 | hold on to it, and fill the register cache once we have selected | |
12150 | an architecture, but it's too tricky to do safely. */ | |
12151 | } | |
12152 | ||
b6a8c27b | 12153 | return beneath ()->read_description (); |
29709017 DJ |
12154 | } |
12155 | ||
a6b151f1 DJ |
12156 | /* Remote file transfer support. This is host-initiated I/O, not |
12157 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
12158 | ||
12159 | /* If *LEFT is at least the length of STRING, copy STRING to | |
12160 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12161 | decrease *LEFT. Otherwise raise an error. */ | |
12162 | ||
12163 | static void | |
a121b7c1 | 12164 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
12165 | { |
12166 | int len = strlen (string); | |
12167 | ||
12168 | if (len > *left) | |
12169 | error (_("Packet too long for target.")); | |
12170 | ||
12171 | memcpy (*buffer, string, len); | |
12172 | *buffer += len; | |
12173 | *left -= len; | |
12174 | ||
12175 | /* NUL-terminate the buffer as a convenience, if there is | |
12176 | room. */ | |
12177 | if (*left) | |
12178 | **buffer = '\0'; | |
12179 | } | |
12180 | ||
12181 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
12182 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12183 | decrease *LEFT. Otherwise raise an error. */ | |
12184 | ||
12185 | static void | |
12186 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
12187 | int len) | |
12188 | { | |
12189 | if (2 * len > *left) | |
12190 | error (_("Packet too long for target.")); | |
12191 | ||
12192 | bin2hex (bytes, *buffer, len); | |
12193 | *buffer += 2 * len; | |
12194 | *left -= 2 * len; | |
12195 | ||
12196 | /* NUL-terminate the buffer as a convenience, if there is | |
12197 | room. */ | |
12198 | if (*left) | |
12199 | **buffer = '\0'; | |
12200 | } | |
12201 | ||
12202 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
12203 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12204 | decrease *LEFT. Otherwise raise an error. */ | |
12205 | ||
12206 | static void | |
12207 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
12208 | { | |
12209 | int len = hexnumlen (value); | |
12210 | ||
12211 | if (len > *left) | |
12212 | error (_("Packet too long for target.")); | |
12213 | ||
12214 | hexnumstr (*buffer, value); | |
12215 | *buffer += len; | |
12216 | *left -= len; | |
12217 | ||
12218 | /* NUL-terminate the buffer as a convenience, if there is | |
12219 | room. */ | |
12220 | if (*left) | |
12221 | **buffer = '\0'; | |
12222 | } | |
12223 | ||
12224 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
b872057a | 12225 | value, *REMOTE_ERRNO to the remote error number or FILEIO_SUCCESS if none |
a6b151f1 DJ |
12226 | was included, and *ATTACHMENT to point to the start of the annex |
12227 | if any. The length of the packet isn't needed here; there may | |
12228 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
12229 | ||
12230 | Return 0 if the packet could be parsed, -1 if it could not. If | |
12231 | -1 is returned, the other variables may not be initialized. */ | |
12232 | ||
12233 | static int | |
aa2838cc | 12234 | remote_hostio_parse_result (const char *buffer, int *retcode, |
b872057a | 12235 | fileio_error *remote_errno, const char **attachment) |
a6b151f1 DJ |
12236 | { |
12237 | char *p, *p2; | |
12238 | ||
b872057a | 12239 | *remote_errno = FILEIO_SUCCESS; |
a6b151f1 DJ |
12240 | *attachment = NULL; |
12241 | ||
12242 | if (buffer[0] != 'F') | |
12243 | return -1; | |
12244 | ||
12245 | errno = 0; | |
12246 | *retcode = strtol (&buffer[1], &p, 16); | |
12247 | if (errno != 0 || p == &buffer[1]) | |
12248 | return -1; | |
12249 | ||
12250 | /* Check for ",errno". */ | |
12251 | if (*p == ',') | |
12252 | { | |
12253 | errno = 0; | |
b872057a | 12254 | *remote_errno = (fileio_error) strtol (p + 1, &p2, 16); |
a6b151f1 DJ |
12255 | if (errno != 0 || p + 1 == p2) |
12256 | return -1; | |
12257 | p = p2; | |
12258 | } | |
12259 | ||
12260 | /* Check for ";attachment". If there is no attachment, the | |
12261 | packet should end here. */ | |
12262 | if (*p == ';') | |
12263 | { | |
12264 | *attachment = p + 1; | |
12265 | return 0; | |
12266 | } | |
12267 | else if (*p == '\0') | |
12268 | return 0; | |
12269 | else | |
12270 | return -1; | |
12271 | } | |
12272 | ||
12273 | /* Send a prepared I/O packet to the target and read its response. | |
12274 | The prepared packet is in the global RS->BUF before this function | |
12275 | is called, and the answer is there when we return. | |
12276 | ||
12277 | COMMAND_BYTES is the length of the request to send, which may include | |
12278 | binary data. WHICH_PACKET is the packet configuration to check | |
12279 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
12280 | is set to the error number and -1 is returned. Otherwise the value | |
12281 | returned by the function is returned. | |
12282 | ||
12283 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
12284 | attachment is expected; an error will be reported if there's a | |
12285 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
12286 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
12287 | attachment's length. */ | |
12288 | ||
6b8edb51 PA |
12289 | int |
12290 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
b872057a | 12291 | fileio_error *remote_errno, const char **attachment, |
6b8edb51 | 12292 | int *attachment_len) |
a6b151f1 DJ |
12293 | { |
12294 | struct remote_state *rs = get_remote_state (); | |
12295 | int ret, bytes_read; | |
aa2838cc | 12296 | const char *attachment_tmp; |
a6b151f1 | 12297 | |
ff52c073 | 12298 | if (m_features.packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
12299 | { |
12300 | *remote_errno = FILEIO_ENOSYS; | |
12301 | return -1; | |
12302 | } | |
12303 | ||
8d64371b TT |
12304 | putpkt_binary (rs->buf.data (), command_bytes); |
12305 | bytes_read = getpkt_sane (&rs->buf, 0); | |
a6b151f1 DJ |
12306 | |
12307 | /* If it timed out, something is wrong. Don't try to parse the | |
12308 | buffer. */ | |
12309 | if (bytes_read < 0) | |
12310 | { | |
12311 | *remote_errno = FILEIO_EINVAL; | |
12312 | return -1; | |
12313 | } | |
12314 | ||
ff52c073 | 12315 | switch (m_features.packet_ok (rs->buf, which_packet)) |
a6b151f1 DJ |
12316 | { |
12317 | case PACKET_ERROR: | |
12318 | *remote_errno = FILEIO_EINVAL; | |
12319 | return -1; | |
12320 | case PACKET_UNKNOWN: | |
12321 | *remote_errno = FILEIO_ENOSYS; | |
12322 | return -1; | |
12323 | case PACKET_OK: | |
12324 | break; | |
12325 | } | |
12326 | ||
8d64371b | 12327 | if (remote_hostio_parse_result (rs->buf.data (), &ret, remote_errno, |
a6b151f1 DJ |
12328 | &attachment_tmp)) |
12329 | { | |
12330 | *remote_errno = FILEIO_EINVAL; | |
12331 | return -1; | |
12332 | } | |
12333 | ||
12334 | /* Make sure we saw an attachment if and only if we expected one. */ | |
12335 | if ((attachment_tmp == NULL && attachment != NULL) | |
12336 | || (attachment_tmp != NULL && attachment == NULL)) | |
12337 | { | |
12338 | *remote_errno = FILEIO_EINVAL; | |
12339 | return -1; | |
12340 | } | |
12341 | ||
12342 | /* If an attachment was found, it must point into the packet buffer; | |
12343 | work out how many bytes there were. */ | |
12344 | if (attachment_tmp != NULL) | |
12345 | { | |
12346 | *attachment = attachment_tmp; | |
8d64371b | 12347 | *attachment_len = bytes_read - (*attachment - rs->buf.data ()); |
a6b151f1 DJ |
12348 | } |
12349 | ||
12350 | return ret; | |
12351 | } | |
12352 | ||
dd194f6b | 12353 | /* See declaration.h. */ |
80152258 | 12354 | |
dd194f6b PA |
12355 | void |
12356 | readahead_cache::invalidate () | |
80152258 | 12357 | { |
dd194f6b | 12358 | this->fd = -1; |
80152258 PA |
12359 | } |
12360 | ||
dd194f6b | 12361 | /* See declaration.h. */ |
80152258 | 12362 | |
dd194f6b PA |
12363 | void |
12364 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 12365 | { |
dd194f6b PA |
12366 | if (this->fd == fd) |
12367 | this->fd = -1; | |
80152258 PA |
12368 | } |
12369 | ||
15a201c8 GB |
12370 | /* Set the filesystem remote_hostio functions that take FILENAME |
12371 | arguments will use. Return 0 on success, or -1 if an error | |
12372 | occurs (and set *REMOTE_ERRNO). */ | |
12373 | ||
6b8edb51 PA |
12374 | int |
12375 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
b872057a | 12376 | fileio_error *remote_errno) |
15a201c8 GB |
12377 | { |
12378 | struct remote_state *rs = get_remote_state (); | |
12379 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
8d64371b | 12380 | char *p = rs->buf.data (); |
15a201c8 GB |
12381 | int left = get_remote_packet_size () - 1; |
12382 | char arg[9]; | |
12383 | int ret; | |
12384 | ||
ff52c073 | 12385 | if (m_features.packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) |
15a201c8 GB |
12386 | return 0; |
12387 | ||
12388 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
12389 | return 0; | |
12390 | ||
12391 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
12392 | ||
12393 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
12394 | remote_buffer_add_string (&p, &left, arg); | |
12395 | ||
8d64371b | 12396 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_setfs, |
15a201c8 GB |
12397 | remote_errno, NULL, NULL); |
12398 | ||
ff52c073 | 12399 | if (m_features.packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) |
15a201c8 GB |
12400 | return 0; |
12401 | ||
12402 | if (ret == 0) | |
12403 | rs->fs_pid = required_pid; | |
12404 | ||
12405 | return ret; | |
12406 | } | |
12407 | ||
12e2a5fd | 12408 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 12409 | |
6b8edb51 PA |
12410 | int |
12411 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
12412 | int flags, int mode, int warn_if_slow, | |
b872057a | 12413 | fileio_error *remote_errno) |
a6b151f1 DJ |
12414 | { |
12415 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12416 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12417 | int left = get_remote_packet_size () - 1; |
12418 | ||
4313b8c0 GB |
12419 | if (warn_if_slow) |
12420 | { | |
12421 | static int warning_issued = 0; | |
12422 | ||
6cb06a8c TT |
12423 | gdb_printf (_("Reading %s from remote target...\n"), |
12424 | filename); | |
4313b8c0 GB |
12425 | |
12426 | if (!warning_issued) | |
12427 | { | |
12428 | warning (_("File transfers from remote targets can be slow." | |
12429 | " Use \"set sysroot\" to access files locally" | |
12430 | " instead.")); | |
12431 | warning_issued = 1; | |
12432 | } | |
12433 | } | |
12434 | ||
15a201c8 GB |
12435 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12436 | return -1; | |
12437 | ||
a6b151f1 DJ |
12438 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
12439 | ||
12440 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12441 | strlen (filename)); | |
12442 | remote_buffer_add_string (&p, &left, ","); | |
12443 | ||
12444 | remote_buffer_add_int (&p, &left, flags); | |
12445 | remote_buffer_add_string (&p, &left, ","); | |
12446 | ||
12447 | remote_buffer_add_int (&p, &left, mode); | |
12448 | ||
8d64371b | 12449 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_open, |
a6b151f1 DJ |
12450 | remote_errno, NULL, NULL); |
12451 | } | |
12452 | ||
f6ac5f3d PA |
12453 | int |
12454 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
12455 | int flags, int mode, int warn_if_slow, | |
b872057a | 12456 | fileio_error *remote_errno) |
f6ac5f3d | 12457 | { |
6b8edb51 | 12458 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
12459 | remote_errno); |
12460 | } | |
12461 | ||
12e2a5fd | 12462 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 12463 | |
6b8edb51 PA |
12464 | int |
12465 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 12466 | ULONGEST offset, fileio_error *remote_errno) |
a6b151f1 DJ |
12467 | { |
12468 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12469 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12470 | int left = get_remote_packet_size (); |
12471 | int out_len; | |
12472 | ||
dd194f6b | 12473 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12474 | |
a6b151f1 DJ |
12475 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
12476 | ||
12477 | remote_buffer_add_int (&p, &left, fd); | |
12478 | remote_buffer_add_string (&p, &left, ","); | |
12479 | ||
12480 | remote_buffer_add_int (&p, &left, offset); | |
12481 | remote_buffer_add_string (&p, &left, ","); | |
12482 | ||
124e13d9 | 12483 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
8d64371b TT |
12484 | (get_remote_packet_size () |
12485 | - (p - rs->buf.data ()))); | |
a6b151f1 | 12486 | |
8d64371b | 12487 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pwrite, |
a6b151f1 DJ |
12488 | remote_errno, NULL, NULL); |
12489 | } | |
12490 | ||
f6ac5f3d PA |
12491 | int |
12492 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 12493 | ULONGEST offset, fileio_error *remote_errno) |
f6ac5f3d | 12494 | { |
6b8edb51 | 12495 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12496 | } |
12497 | ||
80152258 PA |
12498 | /* Helper for the implementation of to_fileio_pread. Read the file |
12499 | from the remote side with vFile:pread. */ | |
a6b151f1 | 12500 | |
6b8edb51 PA |
12501 | int |
12502 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
b872057a | 12503 | ULONGEST offset, fileio_error *remote_errno) |
a6b151f1 DJ |
12504 | { |
12505 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12506 | char *p = rs->buf.data (); |
aa2838cc | 12507 | const char *attachment; |
a6b151f1 DJ |
12508 | int left = get_remote_packet_size (); |
12509 | int ret, attachment_len; | |
12510 | int read_len; | |
12511 | ||
12512 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
12513 | ||
12514 | remote_buffer_add_int (&p, &left, fd); | |
12515 | remote_buffer_add_string (&p, &left, ","); | |
12516 | ||
12517 | remote_buffer_add_int (&p, &left, len); | |
12518 | remote_buffer_add_string (&p, &left, ","); | |
12519 | ||
12520 | remote_buffer_add_int (&p, &left, offset); | |
12521 | ||
8d64371b | 12522 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pread, |
a6b151f1 DJ |
12523 | remote_errno, &attachment, |
12524 | &attachment_len); | |
12525 | ||
12526 | if (ret < 0) | |
12527 | return ret; | |
12528 | ||
bc20a4af | 12529 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
12530 | read_buf, len); |
12531 | if (read_len != ret) | |
12532 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
12533 | ||
12534 | return ret; | |
12535 | } | |
12536 | ||
dd194f6b | 12537 | /* See declaration.h. */ |
80152258 | 12538 | |
dd194f6b PA |
12539 | int |
12540 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
12541 | ULONGEST offset) | |
80152258 | 12542 | { |
dd194f6b PA |
12543 | if (this->fd == fd |
12544 | && this->offset <= offset | |
12545 | && offset < this->offset + this->bufsize) | |
80152258 | 12546 | { |
dd194f6b | 12547 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
12548 | |
12549 | if (offset + len > max) | |
12550 | len = max - offset; | |
12551 | ||
dd194f6b | 12552 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
12553 | return len; |
12554 | } | |
12555 | ||
12556 | return 0; | |
12557 | } | |
12558 | ||
12559 | /* Implementation of to_fileio_pread. */ | |
12560 | ||
6b8edb51 PA |
12561 | int |
12562 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 12563 | ULONGEST offset, fileio_error *remote_errno) |
80152258 PA |
12564 | { |
12565 | int ret; | |
12566 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12567 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12568 | |
dd194f6b | 12569 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12570 | if (ret > 0) |
12571 | { | |
12572 | cache->hit_count++; | |
12573 | ||
2189c312 SM |
12574 | remote_debug_printf ("readahead cache hit %s", |
12575 | pulongest (cache->hit_count)); | |
80152258 PA |
12576 | return ret; |
12577 | } | |
12578 | ||
12579 | cache->miss_count++; | |
2189c312 SM |
12580 | |
12581 | remote_debug_printf ("readahead cache miss %s", | |
12582 | pulongest (cache->miss_count)); | |
80152258 PA |
12583 | |
12584 | cache->fd = fd; | |
12585 | cache->offset = offset; | |
12586 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 12587 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 | 12588 | |
6b8edb51 | 12589 | ret = remote_hostio_pread_vFile (cache->fd, cache->buf, cache->bufsize, |
80152258 PA |
12590 | cache->offset, remote_errno); |
12591 | if (ret <= 0) | |
12592 | { | |
dd194f6b | 12593 | cache->invalidate_fd (fd); |
80152258 PA |
12594 | return ret; |
12595 | } | |
12596 | ||
12597 | cache->bufsize = ret; | |
dd194f6b | 12598 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12599 | } |
12600 | ||
f6ac5f3d PA |
12601 | int |
12602 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 12603 | ULONGEST offset, fileio_error *remote_errno) |
f6ac5f3d | 12604 | { |
6b8edb51 | 12605 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12606 | } |
12607 | ||
12e2a5fd | 12608 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12609 | |
6b8edb51 | 12610 | int |
b872057a | 12611 | remote_target::remote_hostio_close (int fd, fileio_error *remote_errno) |
a6b151f1 DJ |
12612 | { |
12613 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12614 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12615 | int left = get_remote_packet_size () - 1; |
12616 | ||
dd194f6b | 12617 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12618 | |
a6b151f1 DJ |
12619 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12620 | ||
12621 | remote_buffer_add_int (&p, &left, fd); | |
12622 | ||
8d64371b | 12623 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_close, |
a6b151f1 DJ |
12624 | remote_errno, NULL, NULL); |
12625 | } | |
12626 | ||
f6ac5f3d | 12627 | int |
b872057a | 12628 | remote_target::fileio_close (int fd, fileio_error *remote_errno) |
f6ac5f3d | 12629 | { |
6b8edb51 | 12630 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12631 | } |
12632 | ||
12e2a5fd | 12633 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12634 | |
6b8edb51 PA |
12635 | int |
12636 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
b872057a | 12637 | fileio_error *remote_errno) |
a6b151f1 DJ |
12638 | { |
12639 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12640 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12641 | int left = get_remote_packet_size () - 1; |
12642 | ||
15a201c8 GB |
12643 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12644 | return -1; | |
12645 | ||
a6b151f1 DJ |
12646 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12647 | ||
12648 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12649 | strlen (filename)); | |
12650 | ||
8d64371b | 12651 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_unlink, |
a6b151f1 DJ |
12652 | remote_errno, NULL, NULL); |
12653 | } | |
12654 | ||
f6ac5f3d PA |
12655 | int |
12656 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
b872057a | 12657 | fileio_error *remote_errno) |
f6ac5f3d | 12658 | { |
6b8edb51 | 12659 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12660 | } |
12661 | ||
12e2a5fd | 12662 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12663 | |
f6ac5f3d PA |
12664 | gdb::optional<std::string> |
12665 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
b872057a | 12666 | fileio_error *remote_errno) |
b9e7b9c3 UW |
12667 | { |
12668 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12669 | char *p = rs->buf.data (); |
aa2838cc | 12670 | const char *attachment; |
b9e7b9c3 UW |
12671 | int left = get_remote_packet_size (); |
12672 | int len, attachment_len; | |
12673 | int read_len; | |
b9e7b9c3 | 12674 | |
15a201c8 | 12675 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12676 | return {}; |
15a201c8 | 12677 | |
b9e7b9c3 UW |
12678 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12679 | ||
12680 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12681 | strlen (filename)); | |
12682 | ||
8d64371b | 12683 | len = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_readlink, |
b9e7b9c3 UW |
12684 | remote_errno, &attachment, |
12685 | &attachment_len); | |
12686 | ||
12687 | if (len < 0) | |
e0d3522b | 12688 | return {}; |
b9e7b9c3 | 12689 | |
e0d3522b | 12690 | std::string ret (len, '\0'); |
b9e7b9c3 | 12691 | |
bc20a4af | 12692 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12693 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12694 | if (read_len != len) |
12695 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12696 | ||
b9e7b9c3 UW |
12697 | return ret; |
12698 | } | |
12699 | ||
12e2a5fd | 12700 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12701 | |
f6ac5f3d | 12702 | int |
b872057a | 12703 | remote_target::fileio_fstat (int fd, struct stat *st, fileio_error *remote_errno) |
0a93529c GB |
12704 | { |
12705 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12706 | char *p = rs->buf.data (); |
0a93529c GB |
12707 | int left = get_remote_packet_size (); |
12708 | int attachment_len, ret; | |
aa2838cc | 12709 | const char *attachment; |
0a93529c GB |
12710 | struct fio_stat fst; |
12711 | int read_len; | |
12712 | ||
464b0089 GB |
12713 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12714 | ||
12715 | remote_buffer_add_int (&p, &left, fd); | |
12716 | ||
8d64371b | 12717 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_fstat, |
464b0089 GB |
12718 | remote_errno, &attachment, |
12719 | &attachment_len); | |
12720 | if (ret < 0) | |
0a93529c | 12721 | { |
464b0089 GB |
12722 | if (*remote_errno != FILEIO_ENOSYS) |
12723 | return ret; | |
12724 | ||
0a93529c GB |
12725 | /* Strictly we should return -1, ENOSYS here, but when |
12726 | "set sysroot remote:" was implemented in August 2008 | |
12727 | BFD's need for a stat function was sidestepped with | |
12728 | this hack. This was not remedied until March 2015 | |
12729 | so we retain the previous behavior to avoid breaking | |
12730 | compatibility. | |
12731 | ||
12732 | Note that the memset is a March 2015 addition; older | |
12733 | GDBs set st_size *and nothing else* so the structure | |
12734 | would have garbage in all other fields. This might | |
12735 | break something but retaining the previous behavior | |
12736 | here would be just too wrong. */ | |
12737 | ||
12738 | memset (st, 0, sizeof (struct stat)); | |
12739 | st->st_size = INT_MAX; | |
12740 | return 0; | |
12741 | } | |
12742 | ||
0a93529c GB |
12743 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12744 | (gdb_byte *) &fst, sizeof (fst)); | |
12745 | ||
12746 | if (read_len != ret) | |
12747 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12748 | ||
12749 | if (read_len != sizeof (fst)) | |
12750 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12751 | read_len, (int) sizeof (fst)); | |
12752 | ||
12753 | remote_fileio_to_host_stat (&fst, st); | |
12754 | ||
12755 | return 0; | |
12756 | } | |
12757 | ||
12e2a5fd | 12758 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12759 | |
57810aa7 | 12760 | bool |
f6ac5f3d | 12761 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12762 | { |
12763 | /* Valgrind GDB presents itself as a remote target but works | |
12764 | on the local filesystem: it does not implement remote get | |
12765 | and users are not expected to set a sysroot. To handle | |
12766 | this case we treat the remote filesystem as local if the | |
12767 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12768 | does not support vFile:open. */ | |
e0700ba4 | 12769 | if (gdb_sysroot == TARGET_SYSROOT_PREFIX) |
e3dd7556 | 12770 | { |
ff52c073 | 12771 | packet_support ps = m_features.packet_support (PACKET_vFile_open); |
e3dd7556 GB |
12772 | |
12773 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12774 | { | |
b872057a SM |
12775 | int fd; |
12776 | fileio_error remote_errno; | |
e3dd7556 GB |
12777 | |
12778 | /* Try opening a file to probe support. The supplied | |
12779 | filename is irrelevant, we only care about whether | |
12780 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12781 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12782 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12783 | &remote_errno); |
12784 | ||
12785 | if (fd >= 0) | |
6b8edb51 | 12786 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 | 12787 | |
ff52c073 | 12788 | ps = m_features.packet_support (PACKET_vFile_open); |
e3dd7556 GB |
12789 | } |
12790 | ||
12791 | if (ps == PACKET_DISABLE) | |
12792 | { | |
12793 | static int warning_issued = 0; | |
12794 | ||
12795 | if (!warning_issued) | |
12796 | { | |
12797 | warning (_("remote target does not support file" | |
12798 | " transfer, attempting to access files" | |
12799 | " from local filesystem.")); | |
12800 | warning_issued = 1; | |
12801 | } | |
12802 | ||
57810aa7 | 12803 | return true; |
e3dd7556 GB |
12804 | } |
12805 | } | |
12806 | ||
57810aa7 | 12807 | return false; |
e3dd7556 GB |
12808 | } |
12809 | ||
a6b151f1 | 12810 | static char * |
b872057a | 12811 | remote_hostio_error (fileio_error errnum) |
a6b151f1 | 12812 | { |
517a63c2 | 12813 | int host_error = fileio_error_to_host (errnum); |
a6b151f1 DJ |
12814 | |
12815 | if (host_error == -1) | |
12816 | error (_("Unknown remote I/O error %d"), errnum); | |
12817 | else | |
12818 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12819 | } | |
12820 | ||
440b7aec PA |
12821 | /* A RAII wrapper around a remote file descriptor. */ |
12822 | ||
12823 | class scoped_remote_fd | |
a6b151f1 | 12824 | { |
440b7aec | 12825 | public: |
6b8edb51 PA |
12826 | scoped_remote_fd (remote_target *remote, int fd) |
12827 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12828 | { |
12829 | } | |
a6b151f1 | 12830 | |
440b7aec PA |
12831 | ~scoped_remote_fd () |
12832 | { | |
12833 | if (m_fd != -1) | |
12834 | { | |
12835 | try | |
12836 | { | |
b872057a | 12837 | fileio_error remote_errno; |
6b8edb51 | 12838 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12839 | } |
12840 | catch (...) | |
12841 | { | |
12842 | /* Swallow exception before it escapes the dtor. If | |
12843 | something goes wrong, likely the connection is gone, | |
12844 | and there's nothing else that can be done. */ | |
12845 | } | |
12846 | } | |
12847 | } | |
12848 | ||
12849 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12850 | ||
12851 | /* Release ownership of the file descriptor, and return it. */ | |
88a774b9 | 12852 | ATTRIBUTE_UNUSED_RESULT int release () noexcept |
440b7aec PA |
12853 | { |
12854 | int fd = m_fd; | |
12855 | m_fd = -1; | |
12856 | return fd; | |
12857 | } | |
12858 | ||
12859 | /* Return the owned file descriptor. */ | |
12860 | int get () const noexcept | |
12861 | { | |
12862 | return m_fd; | |
12863 | } | |
12864 | ||
12865 | private: | |
6b8edb51 PA |
12866 | /* The remote target. */ |
12867 | remote_target *m_remote; | |
12868 | ||
440b7aec PA |
12869 | /* The owned remote I/O file descriptor. */ |
12870 | int m_fd; | |
12871 | }; | |
a6b151f1 DJ |
12872 | |
12873 | void | |
12874 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12875 | { |
12876 | remote_target *remote = get_current_remote_target (); | |
12877 | ||
12878 | if (remote == nullptr) | |
12879 | error (_("command can only be used with remote target")); | |
12880 | ||
12881 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12882 | } | |
12883 | ||
12884 | void | |
12885 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12886 | int from_tty) | |
a6b151f1 | 12887 | { |
b872057a SM |
12888 | int retcode, bytes, io_size; |
12889 | fileio_error remote_errno; | |
a6b151f1 DJ |
12890 | int bytes_in_buffer; |
12891 | int saw_eof; | |
12892 | ULONGEST offset; | |
a6b151f1 | 12893 | |
d419f42d | 12894 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12895 | if (file == NULL) |
12896 | perror_with_name (local_file); | |
a6b151f1 | 12897 | |
440b7aec | 12898 | scoped_remote_fd fd |
6b8edb51 PA |
12899 | (this, remote_hostio_open (NULL, |
12900 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12901 | | FILEIO_O_TRUNC), | |
12902 | 0700, 0, &remote_errno)); | |
440b7aec | 12903 | if (fd.get () == -1) |
a6b151f1 DJ |
12904 | remote_hostio_error (remote_errno); |
12905 | ||
12906 | /* Send up to this many bytes at once. They won't all fit in the | |
12907 | remote packet limit, so we'll transfer slightly fewer. */ | |
12908 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12909 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12910 | |
a6b151f1 DJ |
12911 | bytes_in_buffer = 0; |
12912 | saw_eof = 0; | |
12913 | offset = 0; | |
12914 | while (bytes_in_buffer || !saw_eof) | |
12915 | { | |
12916 | if (!saw_eof) | |
12917 | { | |
5ca3b260 | 12918 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12919 | io_size - bytes_in_buffer, |
d419f42d | 12920 | file.get ()); |
a6b151f1 DJ |
12921 | if (bytes == 0) |
12922 | { | |
d419f42d | 12923 | if (ferror (file.get ())) |
a6b151f1 DJ |
12924 | error (_("Error reading %s."), local_file); |
12925 | else | |
12926 | { | |
12927 | /* EOF. Unless there is something still in the | |
12928 | buffer from the last iteration, we are done. */ | |
12929 | saw_eof = 1; | |
12930 | if (bytes_in_buffer == 0) | |
12931 | break; | |
12932 | } | |
12933 | } | |
12934 | } | |
12935 | else | |
12936 | bytes = 0; | |
12937 | ||
12938 | bytes += bytes_in_buffer; | |
12939 | bytes_in_buffer = 0; | |
12940 | ||
5ca3b260 | 12941 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 12942 | offset, &remote_errno); |
a6b151f1 DJ |
12943 | |
12944 | if (retcode < 0) | |
12945 | remote_hostio_error (remote_errno); | |
12946 | else if (retcode == 0) | |
12947 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12948 | else if (retcode < bytes) | |
12949 | { | |
12950 | /* Short write. Save the rest of the read data for the next | |
12951 | write. */ | |
12952 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 12953 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
12954 | } |
12955 | ||
12956 | offset += retcode; | |
12957 | } | |
12958 | ||
6b8edb51 | 12959 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12960 | remote_hostio_error (remote_errno); |
12961 | ||
12962 | if (from_tty) | |
6cb06a8c | 12963 | gdb_printf (_("Successfully sent file \"%s\".\n"), local_file); |
a6b151f1 DJ |
12964 | } |
12965 | ||
12966 | void | |
12967 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
12968 | { |
12969 | remote_target *remote = get_current_remote_target (); | |
12970 | ||
12971 | if (remote == nullptr) | |
12972 | error (_("command can only be used with remote target")); | |
12973 | ||
12974 | remote->remote_file_get (remote_file, local_file, from_tty); | |
12975 | } | |
12976 | ||
12977 | void | |
12978 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
12979 | int from_tty) | |
a6b151f1 | 12980 | { |
b872057a SM |
12981 | fileio_error remote_errno; |
12982 | int bytes, io_size; | |
a6b151f1 | 12983 | ULONGEST offset; |
a6b151f1 | 12984 | |
440b7aec | 12985 | scoped_remote_fd fd |
6b8edb51 PA |
12986 | (this, remote_hostio_open (NULL, |
12987 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12988 | &remote_errno)); | |
440b7aec | 12989 | if (fd.get () == -1) |
a6b151f1 DJ |
12990 | remote_hostio_error (remote_errno); |
12991 | ||
d419f42d | 12992 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12993 | if (file == NULL) |
12994 | perror_with_name (local_file); | |
a6b151f1 DJ |
12995 | |
12996 | /* Send up to this many bytes at once. They won't all fit in the | |
12997 | remote packet limit, so we'll transfer slightly fewer. */ | |
12998 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12999 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 13000 | |
a6b151f1 DJ |
13001 | offset = 0; |
13002 | while (1) | |
13003 | { | |
5ca3b260 | 13004 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 13005 | &remote_errno); |
a6b151f1 DJ |
13006 | if (bytes == 0) |
13007 | /* Success, but no bytes, means end-of-file. */ | |
13008 | break; | |
13009 | if (bytes == -1) | |
13010 | remote_hostio_error (remote_errno); | |
13011 | ||
13012 | offset += bytes; | |
13013 | ||
5ca3b260 | 13014 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
13015 | if (bytes == 0) |
13016 | perror_with_name (local_file); | |
13017 | } | |
13018 | ||
6b8edb51 | 13019 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
13020 | remote_hostio_error (remote_errno); |
13021 | ||
13022 | if (from_tty) | |
6cb06a8c | 13023 | gdb_printf (_("Successfully fetched file \"%s\".\n"), remote_file); |
a6b151f1 DJ |
13024 | } |
13025 | ||
13026 | void | |
13027 | remote_file_delete (const char *remote_file, int from_tty) | |
13028 | { | |
6b8edb51 | 13029 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 13030 | |
6b8edb51 | 13031 | if (remote == nullptr) |
a6b151f1 DJ |
13032 | error (_("command can only be used with remote target")); |
13033 | ||
6b8edb51 PA |
13034 | remote->remote_file_delete (remote_file, from_tty); |
13035 | } | |
13036 | ||
13037 | void | |
13038 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
13039 | { | |
b872057a SM |
13040 | int retcode; |
13041 | fileio_error remote_errno; | |
6b8edb51 PA |
13042 | |
13043 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
13044 | if (retcode == -1) |
13045 | remote_hostio_error (remote_errno); | |
13046 | ||
13047 | if (from_tty) | |
6cb06a8c | 13048 | gdb_printf (_("Successfully deleted file \"%s\".\n"), remote_file); |
a6b151f1 DJ |
13049 | } |
13050 | ||
13051 | static void | |
ac88e2de | 13052 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 13053 | { |
d1a41061 PP |
13054 | if (args == NULL) |
13055 | error_no_arg (_("file to put")); | |
13056 | ||
773a1edc | 13057 | gdb_argv argv (args); |
a6b151f1 DJ |
13058 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
13059 | error (_("Invalid parameters to remote put")); | |
13060 | ||
13061 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
13062 | } |
13063 | ||
13064 | static void | |
ac88e2de | 13065 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 13066 | { |
d1a41061 PP |
13067 | if (args == NULL) |
13068 | error_no_arg (_("file to get")); | |
13069 | ||
773a1edc | 13070 | gdb_argv argv (args); |
a6b151f1 DJ |
13071 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
13072 | error (_("Invalid parameters to remote get")); | |
13073 | ||
13074 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
13075 | } |
13076 | ||
13077 | static void | |
ac88e2de | 13078 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 13079 | { |
d1a41061 PP |
13080 | if (args == NULL) |
13081 | error_no_arg (_("file to delete")); | |
13082 | ||
773a1edc | 13083 | gdb_argv argv (args); |
a6b151f1 DJ |
13084 | if (argv[0] == NULL || argv[1] != NULL) |
13085 | error (_("Invalid parameters to remote delete")); | |
13086 | ||
13087 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
13088 | } |
13089 | ||
57810aa7 | 13090 | bool |
f6ac5f3d | 13091 | remote_target::can_execute_reverse () |
b2175913 | 13092 | { |
ff52c073 CS |
13093 | if (m_features.packet_support (PACKET_bs) == PACKET_ENABLE |
13094 | || m_features.packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 13095 | return true; |
40ab02ce | 13096 | else |
57810aa7 | 13097 | return false; |
b2175913 MS |
13098 | } |
13099 | ||
57810aa7 | 13100 | bool |
f6ac5f3d | 13101 | remote_target::supports_non_stop () |
74531fed | 13102 | { |
57810aa7 | 13103 | return true; |
74531fed PA |
13104 | } |
13105 | ||
57810aa7 | 13106 | bool |
f6ac5f3d | 13107 | remote_target::supports_disable_randomization () |
03583c20 UW |
13108 | { |
13109 | /* Only supported in extended mode. */ | |
57810aa7 | 13110 | return false; |
03583c20 UW |
13111 | } |
13112 | ||
57810aa7 | 13113 | bool |
f6ac5f3d | 13114 | remote_target::supports_multi_process () |
8a305172 | 13115 | { |
ff52c073 | 13116 | return m_features.remote_multi_process_p (); |
8a305172 PA |
13117 | } |
13118 | ||
ff52c073 CS |
13119 | int |
13120 | remote_target::remote_supports_cond_tracepoints () | |
782b2b07 | 13121 | { |
ff52c073 CS |
13122 | return (m_features.packet_support (PACKET_ConditionalTracepoints) |
13123 | == PACKET_ENABLE); | |
782b2b07 SS |
13124 | } |
13125 | ||
57810aa7 | 13126 | bool |
f6ac5f3d | 13127 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 13128 | { |
ff52c073 CS |
13129 | return (m_features.packet_support (PACKET_ConditionalBreakpoints) |
13130 | == PACKET_ENABLE); | |
3788aec7 LM |
13131 | } |
13132 | ||
ff52c073 CS |
13133 | int |
13134 | remote_target::remote_supports_fast_tracepoints () | |
7a697b8d | 13135 | { |
ff52c073 | 13136 | return m_features.packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
13137 | } |
13138 | ||
ff52c073 CS |
13139 | int |
13140 | remote_target::remote_supports_static_tracepoints () | |
0fb4aa4b | 13141 | { |
ff52c073 | 13142 | return m_features.packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
13143 | } |
13144 | ||
ff52c073 CS |
13145 | int |
13146 | remote_target::remote_supports_install_in_trace () | |
1e4d1764 | 13147 | { |
ff52c073 | 13148 | return m_features.packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
13149 | } |
13150 | ||
57810aa7 | 13151 | bool |
f6ac5f3d | 13152 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 13153 | { |
ff52c073 | 13154 | return (m_features.packet_support (PACKET_EnableDisableTracepoints_feature) |
4082afcc | 13155 | == PACKET_ENABLE); |
d248b706 KY |
13156 | } |
13157 | ||
57810aa7 | 13158 | bool |
f6ac5f3d | 13159 | remote_target::supports_string_tracing () |
3065dfb6 | 13160 | { |
ff52c073 | 13161 | return m_features.packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
13162 | } |
13163 | ||
57810aa7 | 13164 | bool |
f6ac5f3d | 13165 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 13166 | { |
ff52c073 | 13167 | return m_features.packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
13168 | } |
13169 | ||
f6ac5f3d PA |
13170 | void |
13171 | remote_target::trace_init () | |
35b1e5cc | 13172 | { |
b6bb3468 PA |
13173 | struct remote_state *rs = get_remote_state (); |
13174 | ||
35b1e5cc | 13175 | putpkt ("QTinit"); |
b6bb3468 | 13176 | remote_get_noisy_reply (); |
8d64371b | 13177 | if (strcmp (rs->buf.data (), "OK") != 0) |
35b1e5cc SS |
13178 | error (_("Target does not support this command.")); |
13179 | } | |
13180 | ||
409873ef SS |
13181 | /* Recursive routine to walk through command list including loops, and |
13182 | download packets for each command. */ | |
13183 | ||
6b8edb51 PA |
13184 | void |
13185 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
13186 | struct command_line *cmds) | |
409873ef SS |
13187 | { |
13188 | struct remote_state *rs = get_remote_state (); | |
13189 | struct command_line *cmd; | |
13190 | ||
13191 | for (cmd = cmds; cmd; cmd = cmd->next) | |
13192 | { | |
0df8b418 | 13193 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 13194 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 13195 | encode_source_string (num, addr, "cmd", cmd->line, |
8d64371b TT |
13196 | rs->buf.data () + strlen (rs->buf.data ()), |
13197 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13198 | putpkt (rs->buf); |
b6bb3468 | 13199 | remote_get_noisy_reply (); |
8d64371b | 13200 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13201 | warning (_("Target does not support source download.")); |
13202 | ||
13203 | if (cmd->control_type == while_control | |
13204 | || cmd->control_type == while_stepping_control) | |
13205 | { | |
12973681 | 13206 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 13207 | |
0df8b418 | 13208 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 13209 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 13210 | encode_source_string (num, addr, "cmd", "end", |
8d64371b TT |
13211 | rs->buf.data () + strlen (rs->buf.data ()), |
13212 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13213 | putpkt (rs->buf); |
b6bb3468 | 13214 | remote_get_noisy_reply (); |
8d64371b | 13215 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13216 | warning (_("Target does not support source download.")); |
13217 | } | |
13218 | } | |
13219 | } | |
13220 | ||
f6ac5f3d PA |
13221 | void |
13222 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc SS |
13223 | { |
13224 | CORE_ADDR tpaddr; | |
409873ef | 13225 | char addrbuf[40]; |
b44ec619 SM |
13226 | std::vector<std::string> tdp_actions; |
13227 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 13228 | char *pkt; |
e8ba3115 | 13229 | struct breakpoint *b = loc->owner; |
d9b3f62e | 13230 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 13231 | struct remote_state *rs = get_remote_state (); |
3df3a985 | 13232 | int ret; |
ff36536c | 13233 | const char *err_msg = _("Tracepoint packet too large for target."); |
3df3a985 PFC |
13234 | size_t size_left; |
13235 | ||
13236 | /* We use a buffer other than rs->buf because we'll build strings | |
13237 | across multiple statements, and other statements in between could | |
13238 | modify rs->buf. */ | |
13239 | gdb::char_vector buf (get_remote_packet_size ()); | |
35b1e5cc | 13240 | |
dc673c81 | 13241 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
13242 | |
13243 | tpaddr = loc->address; | |
53807e9f | 13244 | strcpy (addrbuf, phex (tpaddr, sizeof (CORE_ADDR))); |
3df3a985 PFC |
13245 | ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x", |
13246 | b->number, addrbuf, /* address */ | |
13247 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
13248 | t->step_count, t->pass_count); | |
13249 | ||
13250 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13251 | error ("%s", err_msg); |
3df3a985 | 13252 | |
e8ba3115 YQ |
13253 | /* Fast tracepoints are mostly handled by the target, but we can |
13254 | tell the target how big of an instruction block should be moved | |
13255 | around. */ | |
13256 | if (b->type == bp_fast_tracepoint) | |
13257 | { | |
13258 | /* Only test for support at download time; we may not know | |
13259 | target capabilities at definition time. */ | |
13260 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 13261 | { |
6b940e6a PL |
13262 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
13263 | NULL)) | |
3df3a985 PFC |
13264 | { |
13265 | size_left = buf.size () - strlen (buf.data ()); | |
13266 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13267 | size_left, ":F%x", | |
13268 | gdb_insn_length (loc->gdbarch, tpaddr)); | |
13269 | ||
13270 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13271 | error ("%s", err_msg); |
3df3a985 | 13272 | } |
35b1e5cc | 13273 | else |
e8ba3115 YQ |
13274 | /* If it passed validation at definition but fails now, |
13275 | something is very wrong. */ | |
f34652de | 13276 | internal_error (_("Fast tracepoint not valid during download")); |
35b1e5cc | 13277 | } |
e8ba3115 YQ |
13278 | else |
13279 | /* Fast tracepoints are functionally identical to regular | |
13280 | tracepoints, so don't take lack of support as a reason to | |
13281 | give up on the trace run. */ | |
13282 | warning (_("Target does not support fast tracepoints, " | |
13283 | "downloading %d as regular tracepoint"), b->number); | |
13284 | } | |
7b572efb TT |
13285 | else if (b->type == bp_static_tracepoint |
13286 | || b->type == bp_static_marker_tracepoint) | |
e8ba3115 YQ |
13287 | { |
13288 | /* Only test for support at download time; we may not know | |
13289 | target capabilities at definition time. */ | |
13290 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 13291 | { |
e8ba3115 | 13292 | struct static_tracepoint_marker marker; |
0fb4aa4b | 13293 | |
e8ba3115 | 13294 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
3df3a985 PFC |
13295 | { |
13296 | size_left = buf.size () - strlen (buf.data ()); | |
13297 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13298 | size_left, ":S"); | |
13299 | ||
13300 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13301 | error ("%s", err_msg); |
3df3a985 | 13302 | } |
0fb4aa4b | 13303 | else |
e8ba3115 | 13304 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 13305 | } |
e8ba3115 YQ |
13306 | else |
13307 | /* Fast tracepoints are functionally identical to regular | |
13308 | tracepoints, so don't take lack of support as a reason | |
13309 | to give up on the trace run. */ | |
13310 | error (_("Target does not support static tracepoints")); | |
13311 | } | |
13312 | /* If the tracepoint has a conditional, make it into an agent | |
13313 | expression and append to the definition. */ | |
13314 | if (loc->cond) | |
13315 | { | |
13316 | /* Only test support at download time, we may not know target | |
13317 | capabilities at definition time. */ | |
13318 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 13319 | { |
3df3a985 PFC |
13320 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, |
13321 | loc->cond.get ()); | |
13322 | ||
13323 | size_left = buf.size () - strlen (buf.data ()); | |
13324 | ||
13325 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13326 | size_left, ":X%x,", aexpr->len); | |
13327 | ||
13328 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13329 | error ("%s", err_msg); |
3df3a985 PFC |
13330 | |
13331 | size_left = buf.size () - strlen (buf.data ()); | |
13332 | ||
13333 | /* Two bytes to encode each aexpr byte, plus the terminating | |
13334 | null byte. */ | |
13335 | if (aexpr->len * 2 + 1 > size_left) | |
a7f25a84 | 13336 | error ("%s", err_msg); |
3df3a985 PFC |
13337 | |
13338 | pkt = buf.data () + strlen (buf.data ()); | |
13339 | ||
b44ec619 | 13340 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
13341 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
13342 | *pkt = '\0'; | |
35b1e5cc | 13343 | } |
e8ba3115 YQ |
13344 | else |
13345 | warning (_("Target does not support conditional tracepoints, " | |
13346 | "ignoring tp %d cond"), b->number); | |
13347 | } | |
35b1e5cc | 13348 | |
e0700ba4 | 13349 | if (b->commands || !default_collect.empty ()) |
3df3a985 PFC |
13350 | { |
13351 | size_left = buf.size () - strlen (buf.data ()); | |
13352 | ||
13353 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13354 | size_left, "-"); | |
13355 | ||
13356 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13357 | error ("%s", err_msg); |
3df3a985 PFC |
13358 | } |
13359 | ||
13360 | putpkt (buf.data ()); | |
b6bb3468 | 13361 | remote_get_noisy_reply (); |
8d64371b | 13362 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13363 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 13364 | |
e8ba3115 | 13365 | /* do_single_steps (t); */ |
b44ec619 SM |
13366 | for (auto action_it = tdp_actions.begin (); |
13367 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 13368 | { |
b44ec619 SM |
13369 | QUIT; /* Allow user to bail out with ^C. */ |
13370 | ||
aa6f3694 | 13371 | bool has_more = ((action_it + 1) != tdp_actions.end () |
b44ec619 SM |
13372 | || !stepping_actions.empty ()); |
13373 | ||
3df3a985 PFC |
13374 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c", |
13375 | b->number, addrbuf, /* address */ | |
13376 | action_it->c_str (), | |
13377 | has_more ? '-' : 0); | |
13378 | ||
13379 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13380 | error ("%s", err_msg); |
3df3a985 PFC |
13381 | |
13382 | putpkt (buf.data ()); | |
b44ec619 | 13383 | remote_get_noisy_reply (); |
8d64371b | 13384 | if (strcmp (rs->buf.data (), "OK")) |
b44ec619 | 13385 | error (_("Error on target while setting tracepoints.")); |
e8ba3115 | 13386 | } |
409873ef | 13387 | |
05abfc39 PFC |
13388 | for (auto action_it = stepping_actions.begin (); |
13389 | action_it != stepping_actions.end (); action_it++) | |
13390 | { | |
13391 | QUIT; /* Allow user to bail out with ^C. */ | |
13392 | ||
13393 | bool is_first = action_it == stepping_actions.begin (); | |
aa6f3694 | 13394 | bool has_more = (action_it + 1) != stepping_actions.end (); |
05abfc39 | 13395 | |
3df3a985 PFC |
13396 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s", |
13397 | b->number, addrbuf, /* address */ | |
13398 | is_first ? "S" : "", | |
13399 | action_it->c_str (), | |
13400 | has_more ? "-" : ""); | |
13401 | ||
13402 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13403 | error ("%s", err_msg); |
3df3a985 PFC |
13404 | |
13405 | putpkt (buf.data ()); | |
05abfc39 | 13406 | remote_get_noisy_reply (); |
8d64371b | 13407 | if (strcmp (rs->buf.data (), "OK")) |
05abfc39 PFC |
13408 | error (_("Error on target while setting tracepoints.")); |
13409 | } | |
b44ec619 | 13410 | |
ff52c073 | 13411 | if (m_features.packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 13412 | { |
264f9890 | 13413 | if (b->locspec != nullptr) |
409873ef | 13414 | { |
3df3a985 PFC |
13415 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13416 | ||
13417 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13418 | error ("%s", err_msg); |
3df3a985 | 13419 | |
709438c7 | 13420 | const char *str = b->locspec->to_string (); |
264f9890 | 13421 | encode_source_string (b->number, loc->address, "at", str, |
3df3a985 PFC |
13422 | buf.data () + strlen (buf.data ()), |
13423 | buf.size () - strlen (buf.data ())); | |
13424 | putpkt (buf.data ()); | |
b6bb3468 | 13425 | remote_get_noisy_reply (); |
8d64371b | 13426 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13427 | warning (_("Target does not support source download.")); |
409873ef | 13428 | } |
e8ba3115 YQ |
13429 | if (b->cond_string) |
13430 | { | |
3df3a985 PFC |
13431 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13432 | ||
13433 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13434 | error ("%s", err_msg); |
3df3a985 | 13435 | |
e8ba3115 | 13436 | encode_source_string (b->number, loc->address, |
6f781ee3 | 13437 | "cond", b->cond_string.get (), |
3df3a985 PFC |
13438 | buf.data () + strlen (buf.data ()), |
13439 | buf.size () - strlen (buf.data ())); | |
13440 | putpkt (buf.data ()); | |
b6bb3468 | 13441 | remote_get_noisy_reply (); |
8d64371b | 13442 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 YQ |
13443 | warning (_("Target does not support source download.")); |
13444 | } | |
13445 | remote_download_command_source (b->number, loc->address, | |
13446 | breakpoint_commands (b)); | |
35b1e5cc | 13447 | } |
35b1e5cc SS |
13448 | } |
13449 | ||
57810aa7 | 13450 | bool |
f6ac5f3d | 13451 | remote_target::can_download_tracepoint () |
1e4d1764 | 13452 | { |
1e51243a PA |
13453 | struct remote_state *rs = get_remote_state (); |
13454 | struct trace_status *ts; | |
13455 | int status; | |
13456 | ||
13457 | /* Don't try to install tracepoints until we've relocated our | |
13458 | symbols, and fetched and merged the target's tracepoint list with | |
13459 | ours. */ | |
13460 | if (rs->starting_up) | |
57810aa7 | 13461 | return false; |
1e51243a PA |
13462 | |
13463 | ts = current_trace_status (); | |
f6ac5f3d | 13464 | status = get_trace_status (ts); |
1e4d1764 YQ |
13465 | |
13466 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 13467 | return false; |
1e4d1764 YQ |
13468 | |
13469 | /* If we are in a tracing experiment, but remote stub doesn't support | |
13470 | installing tracepoint in trace, we have to return. */ | |
13471 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 13472 | return false; |
1e4d1764 | 13473 | |
57810aa7 | 13474 | return true; |
1e4d1764 YQ |
13475 | } |
13476 | ||
13477 | ||
f6ac5f3d PA |
13478 | void |
13479 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
13480 | { |
13481 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 13482 | char *p; |
35b1e5cc | 13483 | |
8d64371b | 13484 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
13485 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
13486 | tsv.builtin); | |
8d64371b TT |
13487 | p = rs->buf.data () + strlen (rs->buf.data ()); |
13488 | if ((p - rs->buf.data ()) + tsv.name.length () * 2 | |
13489 | >= get_remote_packet_size ()) | |
00bf0b85 | 13490 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 13491 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 13492 | *p++ = '\0'; |
35b1e5cc | 13493 | putpkt (rs->buf); |
b6bb3468 | 13494 | remote_get_noisy_reply (); |
8d64371b | 13495 | if (rs->buf[0] == '\0') |
ad91cd99 | 13496 | error (_("Target does not support this command.")); |
8d64371b | 13497 | if (strcmp (rs->buf.data (), "OK") != 0) |
ad91cd99 | 13498 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13499 | } |
13500 | ||
f6ac5f3d PA |
13501 | void |
13502 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13503 | { |
13504 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13505 | |
8d64371b | 13506 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTEnable:%x:%s", |
53807e9f TT |
13507 | location->owner->number, |
13508 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13509 | putpkt (rs->buf); |
b6bb3468 | 13510 | remote_get_noisy_reply (); |
8d64371b | 13511 | if (rs->buf[0] == '\0') |
d248b706 | 13512 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13513 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13514 | error (_("Error on target while enabling tracepoint.")); |
13515 | } | |
13516 | ||
f6ac5f3d PA |
13517 | void |
13518 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13519 | { |
13520 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13521 | |
8d64371b | 13522 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDisable:%x:%s", |
53807e9f TT |
13523 | location->owner->number, |
13524 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13525 | putpkt (rs->buf); |
b6bb3468 | 13526 | remote_get_noisy_reply (); |
8d64371b | 13527 | if (rs->buf[0] == '\0') |
d248b706 | 13528 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13529 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13530 | error (_("Error on target while disabling tracepoint.")); |
13531 | } | |
13532 | ||
f6ac5f3d PA |
13533 | void |
13534 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13535 | { |
13536 | asection *s; | |
13537 | bfd_size_type size; | |
608bcef2 | 13538 | bfd_vma vma; |
35b1e5cc | 13539 | int anysecs = 0; |
c2fa21f1 | 13540 | int offset = 0; |
f493c217 | 13541 | bfd *abfd = current_program_space->exec_bfd (); |
35b1e5cc | 13542 | |
f493c217 | 13543 | if (!abfd) |
35b1e5cc SS |
13544 | return; /* No information to give. */ |
13545 | ||
b6bb3468 PA |
13546 | struct remote_state *rs = get_remote_state (); |
13547 | ||
8d64371b TT |
13548 | strcpy (rs->buf.data (), "QTro"); |
13549 | offset = strlen (rs->buf.data ()); | |
f493c217 | 13550 | for (s = abfd->sections; s; s = s->next) |
35b1e5cc SS |
13551 | { |
13552 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13553 | int sec_length; |
35b1e5cc | 13554 | |
f493c217 AM |
13555 | if ((s->flags & SEC_LOAD) == 0 |
13556 | /* || (s->flags & SEC_CODE) == 0 */ | |
13557 | || (s->flags & SEC_READONLY) == 0) | |
35b1e5cc SS |
13558 | continue; |
13559 | ||
13560 | anysecs = 1; | |
fd361982 AM |
13561 | vma = bfd_section_vma (s); |
13562 | size = bfd_section_size (s); | |
f493c217 AM |
13563 | bfd_sprintf_vma (abfd, tmp1, vma); |
13564 | bfd_sprintf_vma (abfd, tmp2, vma + size); | |
c2fa21f1 | 13565 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
8d64371b | 13566 | if (offset + sec_length + 1 > rs->buf.size ()) |
c2fa21f1 | 13567 | { |
ff52c073 CS |
13568 | if (m_features.packet_support (PACKET_qXfer_traceframe_info) |
13569 | != PACKET_ENABLE) | |
864ac8a7 | 13570 | warning (_("\ |
c2fa21f1 HZ |
13571 | Too many sections for read-only sections definition packet.")); |
13572 | break; | |
13573 | } | |
8d64371b | 13574 | xsnprintf (rs->buf.data () + offset, rs->buf.size () - offset, ":%s,%s", |
bba74b36 | 13575 | tmp1, tmp2); |
c2fa21f1 | 13576 | offset += sec_length; |
35b1e5cc SS |
13577 | } |
13578 | if (anysecs) | |
13579 | { | |
b6bb3468 | 13580 | putpkt (rs->buf); |
8d64371b | 13581 | getpkt (&rs->buf, 0); |
35b1e5cc SS |
13582 | } |
13583 | } | |
13584 | ||
f6ac5f3d PA |
13585 | void |
13586 | remote_target::trace_start () | |
35b1e5cc | 13587 | { |
b6bb3468 PA |
13588 | struct remote_state *rs = get_remote_state (); |
13589 | ||
35b1e5cc | 13590 | putpkt ("QTStart"); |
b6bb3468 | 13591 | remote_get_noisy_reply (); |
8d64371b | 13592 | if (rs->buf[0] == '\0') |
ad91cd99 | 13593 | error (_("Target does not support this command.")); |
8d64371b TT |
13594 | if (strcmp (rs->buf.data (), "OK") != 0) |
13595 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13596 | } |
13597 | ||
f6ac5f3d PA |
13598 | int |
13599 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13600 | { |
953b98d1 | 13601 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13602 | char *p = NULL; |
bd3eecc3 | 13603 | enum packet_result result; |
b6bb3468 | 13604 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13605 | |
ff52c073 | 13606 | if (m_features.packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13607 | return -1; |
a744cf53 | 13608 | |
7b9a15e1 | 13609 | /* FIXME we need to get register block size some other way. */ |
5cd63fda | 13610 | trace_regblock_size |
9d6eea31 | 13611 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 13612 | |
049dc89b JK |
13613 | putpkt ("qTStatus"); |
13614 | ||
a70b8144 | 13615 | try |
67f41397 | 13616 | { |
b6bb3468 | 13617 | p = remote_get_noisy_reply (); |
67f41397 | 13618 | } |
230d2906 | 13619 | catch (const gdb_exception_error &ex) |
67f41397 | 13620 | { |
598d3636 JK |
13621 | if (ex.error != TARGET_CLOSE_ERROR) |
13622 | { | |
13623 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13624 | return -1; | |
13625 | } | |
eedc3f4f | 13626 | throw; |
67f41397 | 13627 | } |
00bf0b85 | 13628 | |
ff52c073 | 13629 | result = m_features.packet_ok (p, PACKET_qTStatus); |
bd3eecc3 | 13630 | |
00bf0b85 | 13631 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13632 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13633 | return -1; |
35b1e5cc | 13634 | |
00bf0b85 | 13635 | /* We're working with a live target. */ |
f5911ea1 | 13636 | ts->filename = NULL; |
00bf0b85 | 13637 | |
00bf0b85 | 13638 | if (*p++ != 'T') |
8d64371b | 13639 | error (_("Bogus trace status reply from target: %s"), rs->buf.data ()); |
35b1e5cc | 13640 | |
84cebc4a YQ |
13641 | /* Function 'parse_trace_status' sets default value of each field of |
13642 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13643 | parse_trace_status (p, ts); |
13644 | ||
13645 | return ts->running; | |
35b1e5cc SS |
13646 | } |
13647 | ||
f6ac5f3d PA |
13648 | void |
13649 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13650 | struct uploaded_tp *utp) | |
f196051f SS |
13651 | { |
13652 | struct remote_state *rs = get_remote_state (); | |
f196051f | 13653 | char *reply; |
f196051f | 13654 | struct tracepoint *tp = (struct tracepoint *) bp; |
bba74b36 | 13655 | size_t size = get_remote_packet_size (); |
f196051f SS |
13656 | |
13657 | if (tp) | |
13658 | { | |
c1fc2657 | 13659 | tp->hit_count = 0; |
f196051f | 13660 | tp->traceframe_usage = 0; |
40cb8ca5 | 13661 | for (bp_location *loc : tp->locations ()) |
f196051f SS |
13662 | { |
13663 | /* If the tracepoint was never downloaded, don't go asking for | |
13664 | any status. */ | |
13665 | if (tp->number_on_target == 0) | |
13666 | continue; | |
8d64371b | 13667 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", tp->number_on_target, |
bba74b36 | 13668 | phex_nz (loc->address, 0)); |
f196051f | 13669 | putpkt (rs->buf); |
b6bb3468 | 13670 | reply = remote_get_noisy_reply (); |
f196051f SS |
13671 | if (reply && *reply) |
13672 | { | |
13673 | if (*reply == 'V') | |
13674 | parse_tracepoint_status (reply + 1, bp, utp); | |
13675 | } | |
13676 | } | |
13677 | } | |
13678 | else if (utp) | |
13679 | { | |
13680 | utp->hit_count = 0; | |
13681 | utp->traceframe_usage = 0; | |
8d64371b | 13682 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", utp->number, |
bba74b36 | 13683 | phex_nz (utp->addr, 0)); |
f196051f | 13684 | putpkt (rs->buf); |
b6bb3468 | 13685 | reply = remote_get_noisy_reply (); |
f196051f SS |
13686 | if (reply && *reply) |
13687 | { | |
13688 | if (*reply == 'V') | |
13689 | parse_tracepoint_status (reply + 1, bp, utp); | |
13690 | } | |
13691 | } | |
13692 | } | |
13693 | ||
f6ac5f3d PA |
13694 | void |
13695 | remote_target::trace_stop () | |
35b1e5cc | 13696 | { |
b6bb3468 PA |
13697 | struct remote_state *rs = get_remote_state (); |
13698 | ||
35b1e5cc | 13699 | putpkt ("QTStop"); |
b6bb3468 | 13700 | remote_get_noisy_reply (); |
8d64371b | 13701 | if (rs->buf[0] == '\0') |
ad91cd99 | 13702 | error (_("Target does not support this command.")); |
8d64371b TT |
13703 | if (strcmp (rs->buf.data (), "OK") != 0) |
13704 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13705 | } |
13706 | ||
f6ac5f3d PA |
13707 | int |
13708 | remote_target::trace_find (enum trace_find_type type, int num, | |
13709 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13710 | int *tpp) | |
35b1e5cc SS |
13711 | { |
13712 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 13713 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
35b1e5cc SS |
13714 | char *p, *reply; |
13715 | int target_frameno = -1, target_tracept = -1; | |
13716 | ||
e6e4e701 PA |
13717 | /* Lookups other than by absolute frame number depend on the current |
13718 | trace selected, so make sure it is correct on the remote end | |
13719 | first. */ | |
13720 | if (type != tfind_number) | |
13721 | set_remote_traceframe (); | |
13722 | ||
8d64371b | 13723 | p = rs->buf.data (); |
35b1e5cc SS |
13724 | strcpy (p, "QTFrame:"); |
13725 | p = strchr (p, '\0'); | |
13726 | switch (type) | |
13727 | { | |
13728 | case tfind_number: | |
bba74b36 | 13729 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13730 | break; |
13731 | case tfind_pc: | |
bba74b36 | 13732 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13733 | break; |
13734 | case tfind_tp: | |
bba74b36 | 13735 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13736 | break; |
13737 | case tfind_range: | |
bba74b36 YQ |
13738 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13739 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13740 | break; |
13741 | case tfind_outside: | |
bba74b36 YQ |
13742 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13743 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13744 | break; |
13745 | default: | |
9b20d036 | 13746 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13747 | } |
13748 | ||
13749 | putpkt (rs->buf); | |
b6bb3468 | 13750 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13751 | if (*reply == '\0') |
13752 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13753 | |
13754 | while (reply && *reply) | |
13755 | switch (*reply) | |
13756 | { | |
13757 | case 'F': | |
f197e0f1 VP |
13758 | p = ++reply; |
13759 | target_frameno = (int) strtol (p, &reply, 16); | |
13760 | if (reply == p) | |
13761 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13762 | /* Don't update our remote traceframe number cache on failure |
13763 | to select a remote traceframe. */ | |
f197e0f1 VP |
13764 | if (target_frameno == -1) |
13765 | return -1; | |
35b1e5cc SS |
13766 | break; |
13767 | case 'T': | |
f197e0f1 VP |
13768 | p = ++reply; |
13769 | target_tracept = (int) strtol (p, &reply, 16); | |
13770 | if (reply == p) | |
13771 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13772 | break; |
13773 | case 'O': /* "OK"? */ | |
13774 | if (reply[1] == 'K' && reply[2] == '\0') | |
13775 | reply += 2; | |
13776 | else | |
13777 | error (_("Bogus reply from target: %s"), reply); | |
13778 | break; | |
13779 | default: | |
13780 | error (_("Bogus reply from target: %s"), reply); | |
13781 | } | |
13782 | if (tpp) | |
13783 | *tpp = target_tracept; | |
e6e4e701 | 13784 | |
262e1174 | 13785 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13786 | return target_frameno; |
13787 | } | |
13788 | ||
57810aa7 | 13789 | bool |
f6ac5f3d | 13790 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13791 | { |
13792 | struct remote_state *rs = get_remote_state (); | |
13793 | char *reply; | |
13794 | ULONGEST uval; | |
13795 | ||
e6e4e701 PA |
13796 | set_remote_traceframe (); |
13797 | ||
8d64371b | 13798 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13799 | putpkt (rs->buf); |
b6bb3468 | 13800 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13801 | if (reply && *reply) |
13802 | { | |
13803 | if (*reply == 'V') | |
13804 | { | |
13805 | unpack_varlen_hex (reply + 1, &uval); | |
13806 | *val = (LONGEST) uval; | |
57810aa7 | 13807 | return true; |
35b1e5cc SS |
13808 | } |
13809 | } | |
57810aa7 | 13810 | return false; |
35b1e5cc SS |
13811 | } |
13812 | ||
f6ac5f3d PA |
13813 | int |
13814 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13815 | { |
13816 | struct remote_state *rs = get_remote_state (); | |
13817 | char *p, *reply; | |
13818 | ||
8d64371b | 13819 | p = rs->buf.data (); |
00bf0b85 SS |
13820 | strcpy (p, "QTSave:"); |
13821 | p += strlen (p); | |
8d64371b TT |
13822 | if ((p - rs->buf.data ()) + strlen (filename) * 2 |
13823 | >= get_remote_packet_size ()) | |
00bf0b85 | 13824 | error (_("Remote file name too long for trace save packet")); |
9f1b45b0 | 13825 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13826 | *p++ = '\0'; |
13827 | putpkt (rs->buf); | |
b6bb3468 | 13828 | reply = remote_get_noisy_reply (); |
d6c5869f | 13829 | if (*reply == '\0') |
ad91cd99 PA |
13830 | error (_("Target does not support this command.")); |
13831 | if (strcmp (reply, "OK") != 0) | |
13832 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13833 | return 0; |
13834 | } | |
13835 | ||
13836 | /* This is basically a memory transfer, but needs to be its own packet | |
13837 | because we don't know how the target actually organizes its trace | |
13838 | memory, plus we want to be able to ask for as much as possible, but | |
13839 | not be unhappy if we don't get as much as we ask for. */ | |
13840 | ||
f6ac5f3d PA |
13841 | LONGEST |
13842 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13843 | { |
13844 | struct remote_state *rs = get_remote_state (); | |
13845 | char *reply; | |
13846 | char *p; | |
13847 | int rslt; | |
13848 | ||
8d64371b | 13849 | p = rs->buf.data (); |
00bf0b85 SS |
13850 | strcpy (p, "qTBuffer:"); |
13851 | p += strlen (p); | |
13852 | p += hexnumstr (p, offset); | |
13853 | *p++ = ','; | |
13854 | p += hexnumstr (p, len); | |
13855 | *p++ = '\0'; | |
13856 | ||
13857 | putpkt (rs->buf); | |
b6bb3468 | 13858 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13859 | if (reply && *reply) |
13860 | { | |
13861 | /* 'l' by itself means we're at the end of the buffer and | |
13862 | there is nothing more to get. */ | |
13863 | if (*reply == 'l') | |
13864 | return 0; | |
13865 | ||
13866 | /* Convert the reply into binary. Limit the number of bytes to | |
13867 | convert according to our passed-in buffer size, rather than | |
13868 | what was returned in the packet; if the target is | |
13869 | unexpectedly generous and gives us a bigger reply than we | |
13870 | asked for, we don't want to crash. */ | |
b6bb3468 | 13871 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13872 | return rslt; |
13873 | } | |
13874 | ||
13875 | /* Something went wrong, flag as an error. */ | |
13876 | return -1; | |
13877 | } | |
13878 | ||
f6ac5f3d PA |
13879 | void |
13880 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13881 | { |
13882 | struct remote_state *rs = get_remote_state (); | |
13883 | ||
ff52c073 CS |
13884 | if (m_features.packet_support (PACKET_DisconnectedTracing_feature) |
13885 | == PACKET_ENABLE) | |
33da3f1c | 13886 | { |
ad91cd99 PA |
13887 | char *reply; |
13888 | ||
8d64371b TT |
13889 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13890 | "QTDisconnected:%x", val); | |
33da3f1c | 13891 | putpkt (rs->buf); |
b6bb3468 | 13892 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13893 | if (*reply == '\0') |
33da3f1c | 13894 | error (_("Target does not support this command.")); |
ad91cd99 | 13895 | if (strcmp (reply, "OK") != 0) |
dda83cd7 | 13896 | error (_("Bogus reply from target: %s"), reply); |
33da3f1c SS |
13897 | } |
13898 | else if (val) | |
13899 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13900 | } |
13901 | ||
f6ac5f3d PA |
13902 | int |
13903 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c | 13904 | { |
5b6d1e4f | 13905 | thread_info *info = find_thread_ptid (this, ptid); |
a744cf53 | 13906 | |
7aabaf9d SM |
13907 | if (info != NULL && info->priv != NULL) |
13908 | return get_remote_thread_info (info)->core; | |
13909 | ||
dc146f7c VP |
13910 | return -1; |
13911 | } | |
13912 | ||
f6ac5f3d PA |
13913 | void |
13914 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13915 | { |
13916 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13917 | char *reply; |
4daf5ac0 | 13918 | |
8d64371b TT |
13919 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13920 | "QTBuffer:circular:%x", val); | |
4daf5ac0 | 13921 | putpkt (rs->buf); |
b6bb3468 | 13922 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13923 | if (*reply == '\0') |
4daf5ac0 | 13924 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13925 | if (strcmp (reply, "OK") != 0) |
13926 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13927 | } |
13928 | ||
f6ac5f3d PA |
13929 | traceframe_info_up |
13930 | remote_target::traceframe_info () | |
b3b9301e | 13931 | { |
9018be22 | 13932 | gdb::optional<gdb::char_vector> text |
328d42d8 SM |
13933 | = target_read_stralloc (current_inferior ()->top_target (), |
13934 | TARGET_OBJECT_TRACEFRAME_INFO, | |
b7b030ad | 13935 | NULL); |
9018be22 SM |
13936 | if (text) |
13937 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13938 | |
13939 | return NULL; | |
13940 | } | |
13941 | ||
405f8e94 SS |
13942 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13943 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13944 | if the packet is not supported, and 0 if the minimum instruction | |
13945 | length is unknown. */ | |
13946 | ||
f6ac5f3d PA |
13947 | int |
13948 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13949 | { |
13950 | struct remote_state *rs = get_remote_state (); | |
13951 | char *reply; | |
13952 | ||
e886a173 PA |
13953 | /* If we're not debugging a process yet, the IPA can't be |
13954 | loaded. */ | |
55f6301a | 13955 | if (!target_has_execution ()) |
e886a173 PA |
13956 | return 0; |
13957 | ||
13958 | /* Make sure the remote is pointing at the right process. */ | |
13959 | set_general_process (); | |
13960 | ||
8d64371b | 13961 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13962 | putpkt (rs->buf); |
b6bb3468 | 13963 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13964 | if (*reply == '\0') |
13965 | return -1; | |
13966 | else | |
13967 | { | |
13968 | ULONGEST min_insn_len; | |
13969 | ||
13970 | unpack_varlen_hex (reply, &min_insn_len); | |
13971 | ||
13972 | return (int) min_insn_len; | |
13973 | } | |
13974 | } | |
13975 | ||
f6ac5f3d PA |
13976 | void |
13977 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13978 | { |
ff52c073 | 13979 | if (m_features.packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13980 | { |
13981 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13982 | char *buf = rs->buf.data (); |
13983 | char *endbuf = buf + get_remote_packet_size (); | |
f6f899bf HAQ |
13984 | enum packet_result result; |
13985 | ||
13986 | gdb_assert (val >= 0 || val == -1); | |
13987 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13988 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13989 | if (val < 0) | |
13990 | { | |
13991 | *buf++ = '-'; | |
dda83cd7 | 13992 | buf += hexnumstr (buf, (ULONGEST) -val); |
f6f899bf HAQ |
13993 | } |
13994 | else | |
13995 | buf += hexnumstr (buf, (ULONGEST) val); | |
13996 | ||
13997 | putpkt (rs->buf); | |
b6bb3468 | 13998 | remote_get_noisy_reply (); |
ff52c073 | 13999 | result = m_features.packet_ok (rs->buf, PACKET_QTBuffer_size); |
f6f899bf HAQ |
14000 | |
14001 | if (result != PACKET_OK) | |
8d64371b | 14002 | warning (_("Bogus reply from target: %s"), rs->buf.data ()); |
f6f899bf HAQ |
14003 | } |
14004 | } | |
14005 | ||
57810aa7 | 14006 | bool |
f6ac5f3d PA |
14007 | remote_target::set_trace_notes (const char *user, const char *notes, |
14008 | const char *stop_notes) | |
f196051f SS |
14009 | { |
14010 | struct remote_state *rs = get_remote_state (); | |
14011 | char *reply; | |
8d64371b TT |
14012 | char *buf = rs->buf.data (); |
14013 | char *endbuf = buf + get_remote_packet_size (); | |
f196051f SS |
14014 | int nbytes; |
14015 | ||
14016 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
14017 | if (user) | |
14018 | { | |
14019 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 14020 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
14021 | buf += 2 * nbytes; |
14022 | *buf++ = ';'; | |
14023 | } | |
14024 | if (notes) | |
14025 | { | |
14026 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 14027 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
14028 | buf += 2 * nbytes; |
14029 | *buf++ = ';'; | |
14030 | } | |
14031 | if (stop_notes) | |
14032 | { | |
14033 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 14034 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
14035 | buf += 2 * nbytes; |
14036 | *buf++ = ';'; | |
14037 | } | |
14038 | /* Ensure the buffer is terminated. */ | |
14039 | *buf = '\0'; | |
14040 | ||
14041 | putpkt (rs->buf); | |
b6bb3468 | 14042 | reply = remote_get_noisy_reply (); |
f196051f | 14043 | if (*reply == '\0') |
57810aa7 | 14044 | return false; |
f196051f SS |
14045 | |
14046 | if (strcmp (reply, "OK") != 0) | |
14047 | error (_("Bogus reply from target: %s"), reply); | |
14048 | ||
57810aa7 | 14049 | return true; |
f196051f SS |
14050 | } |
14051 | ||
57810aa7 PA |
14052 | bool |
14053 | remote_target::use_agent (bool use) | |
d1feda86 | 14054 | { |
ff52c073 | 14055 | if (m_features.packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
14056 | { |
14057 | struct remote_state *rs = get_remote_state (); | |
14058 | ||
14059 | /* If the stub supports QAgent. */ | |
8d64371b | 14060 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 | 14061 | putpkt (rs->buf); |
8d64371b | 14062 | getpkt (&rs->buf, 0); |
d1feda86 | 14063 | |
8d64371b | 14064 | if (strcmp (rs->buf.data (), "OK") == 0) |
d1feda86 | 14065 | { |
f6ac5f3d | 14066 | ::use_agent = use; |
57810aa7 | 14067 | return true; |
d1feda86 YQ |
14068 | } |
14069 | } | |
14070 | ||
57810aa7 | 14071 | return false; |
d1feda86 YQ |
14072 | } |
14073 | ||
57810aa7 | 14074 | bool |
f6ac5f3d | 14075 | remote_target::can_use_agent () |
d1feda86 | 14076 | { |
ff52c073 | 14077 | return (m_features.packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
14078 | } |
14079 | ||
9accd112 MM |
14080 | struct btrace_target_info |
14081 | { | |
14082 | /* The ptid of the traced thread. */ | |
14083 | ptid_t ptid; | |
f4abbc16 MM |
14084 | |
14085 | /* The obtained branch trace configuration. */ | |
14086 | struct btrace_config conf; | |
9accd112 MM |
14087 | }; |
14088 | ||
f4abbc16 MM |
14089 | /* Reset our idea of our target's btrace configuration. */ |
14090 | ||
14091 | static void | |
6b8edb51 | 14092 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 14093 | { |
f4abbc16 MM |
14094 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
14095 | } | |
14096 | ||
f4abbc16 MM |
14097 | /* Synchronize the configuration with the target. */ |
14098 | ||
6b8edb51 PA |
14099 | void |
14100 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 14101 | { |
d33501a5 MM |
14102 | struct remote_state *rs; |
14103 | char *buf, *pos, *endbuf; | |
14104 | ||
14105 | rs = get_remote_state (); | |
8d64371b | 14106 | buf = rs->buf.data (); |
d33501a5 MM |
14107 | endbuf = buf + get_remote_packet_size (); |
14108 | ||
ff52c073 | 14109 | if (m_features.packet_support (PACKET_Qbtrace_conf_bts_size) == PACKET_ENABLE |
d33501a5 MM |
14110 | && conf->bts.size != rs->btrace_config.bts.size) |
14111 | { | |
14112 | pos = buf; | |
ff52c073 CS |
14113 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", |
14114 | packets_descriptions[PACKET_Qbtrace_conf_bts_size].name, | |
dda83cd7 | 14115 | conf->bts.size); |
d33501a5 MM |
14116 | |
14117 | putpkt (buf); | |
8d64371b | 14118 | getpkt (&rs->buf, 0); |
d33501a5 | 14119 | |
ff52c073 CS |
14120 | if (m_features.packet_ok (buf, PACKET_Qbtrace_conf_bts_size) |
14121 | == PACKET_ERROR) | |
d33501a5 MM |
14122 | { |
14123 | if (buf[0] == 'E' && buf[1] == '.') | |
14124 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
14125 | else | |
14126 | error (_("Failed to configure the BTS buffer size.")); | |
14127 | } | |
14128 | ||
14129 | rs->btrace_config.bts.size = conf->bts.size; | |
14130 | } | |
b20a6524 | 14131 | |
ff52c073 | 14132 | if (m_features.packet_support (PACKET_Qbtrace_conf_pt_size) == PACKET_ENABLE |
b20a6524 MM |
14133 | && conf->pt.size != rs->btrace_config.pt.size) |
14134 | { | |
14135 | pos = buf; | |
ff52c073 CS |
14136 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", |
14137 | packets_descriptions[PACKET_Qbtrace_conf_pt_size].name, | |
dda83cd7 | 14138 | conf->pt.size); |
b20a6524 MM |
14139 | |
14140 | putpkt (buf); | |
8d64371b | 14141 | getpkt (&rs->buf, 0); |
b20a6524 | 14142 | |
ff52c073 CS |
14143 | if (m_features.packet_ok (buf, PACKET_Qbtrace_conf_pt_size) |
14144 | == PACKET_ERROR) | |
b20a6524 MM |
14145 | { |
14146 | if (buf[0] == 'E' && buf[1] == '.') | |
14147 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
14148 | else | |
14149 | error (_("Failed to configure the trace buffer size.")); | |
14150 | } | |
14151 | ||
14152 | rs->btrace_config.pt.size = conf->pt.size; | |
14153 | } | |
f4abbc16 MM |
14154 | } |
14155 | ||
0d8cbc5f | 14156 | /* Read TP's btrace configuration from the target and store it into CONF. */ |
f4abbc16 MM |
14157 | |
14158 | static void | |
0d8cbc5f | 14159 | btrace_read_config (thread_info *tp, struct btrace_config *conf) |
f4abbc16 | 14160 | { |
0d8cbc5f MM |
14161 | /* target_read_stralloc relies on INFERIOR_PTID. */ |
14162 | scoped_restore_current_thread restore_thread; | |
14163 | switch_to_thread (tp); | |
14164 | ||
9018be22 | 14165 | gdb::optional<gdb::char_vector> xml |
328d42d8 SM |
14166 | = target_read_stralloc (current_inferior ()->top_target (), |
14167 | TARGET_OBJECT_BTRACE_CONF, ""); | |
9018be22 SM |
14168 | if (xml) |
14169 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
14170 | } |
14171 | ||
c0272db5 TW |
14172 | /* Maybe reopen target btrace. */ |
14173 | ||
6b8edb51 PA |
14174 | void |
14175 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
14176 | { |
14177 | struct remote_state *rs = get_remote_state (); | |
c0272db5 | 14178 | int btrace_target_pushed = 0; |
15766370 | 14179 | #if !defined (HAVE_LIBIPT) |
c0272db5 | 14180 | int warned = 0; |
15766370 | 14181 | #endif |
c0272db5 | 14182 | |
aedbe3bb CM |
14183 | /* Don't bother walking the entirety of the remote thread list when |
14184 | we know the feature isn't supported by the remote. */ | |
ff52c073 | 14185 | if (m_features.packet_support (PACKET_qXfer_btrace_conf) != PACKET_ENABLE) |
aedbe3bb CM |
14186 | return; |
14187 | ||
5b6d1e4f | 14188 | for (thread_info *tp : all_non_exited_threads (this)) |
c0272db5 | 14189 | { |
c0272db5 | 14190 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); |
0d8cbc5f | 14191 | btrace_read_config (tp, &rs->btrace_config); |
c0272db5 TW |
14192 | |
14193 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
14194 | continue; | |
14195 | ||
14196 | #if !defined (HAVE_LIBIPT) | |
14197 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
14198 | { | |
14199 | if (!warned) | |
14200 | { | |
14201 | warned = 1; | |
c4e12631 MM |
14202 | warning (_("Target is recording using Intel Processor Trace " |
14203 | "but support was disabled at compile time.")); | |
c0272db5 TW |
14204 | } |
14205 | ||
14206 | continue; | |
14207 | } | |
14208 | #endif /* !defined (HAVE_LIBIPT) */ | |
14209 | ||
14210 | /* Push target, once, but before anything else happens. This way our | |
14211 | changes to the threads will be cleaned up by unpushing the target | |
14212 | in case btrace_read_config () throws. */ | |
14213 | if (!btrace_target_pushed) | |
14214 | { | |
14215 | btrace_target_pushed = 1; | |
14216 | record_btrace_push_target (); | |
6cb06a8c TT |
14217 | gdb_printf (_("Target is recording using %s.\n"), |
14218 | btrace_format_string (rs->btrace_config.format)); | |
c0272db5 TW |
14219 | } |
14220 | ||
14221 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
14222 | tp->btrace.target->ptid = tp->ptid; | |
14223 | tp->btrace.target->conf = rs->btrace_config; | |
14224 | } | |
c0272db5 TW |
14225 | } |
14226 | ||
9accd112 MM |
14227 | /* Enable branch tracing. */ |
14228 | ||
f6ac5f3d | 14229 | struct btrace_target_info * |
696c0d5e MM |
14230 | remote_target::enable_btrace (thread_info *tp, |
14231 | const struct btrace_config *conf) | |
9accd112 MM |
14232 | { |
14233 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 14234 | struct packet_config *packet = NULL; |
9accd112 | 14235 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
14236 | char *buf = rs->buf.data (); |
14237 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14238 | |
ff52c073 | 14239 | unsigned int which_packet; |
b20a6524 MM |
14240 | switch (conf->format) |
14241 | { | |
14242 | case BTRACE_FORMAT_BTS: | |
ff52c073 | 14243 | which_packet = PACKET_Qbtrace_bts; |
b20a6524 | 14244 | break; |
b20a6524 | 14245 | case BTRACE_FORMAT_PT: |
ff52c073 | 14246 | which_packet = PACKET_Qbtrace_pt; |
b20a6524 | 14247 | break; |
ff52c073 CS |
14248 | default: |
14249 | internal_error (_("Bad branch btrace format: %u."), | |
14250 | (unsigned int) conf->format); | |
b20a6524 MM |
14251 | } |
14252 | ||
ff52c073 | 14253 | packet = &m_features.m_protocol_packets[which_packet]; |
b20a6524 | 14254 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14255 | error (_("Target does not support branch tracing.")); |
14256 | ||
f4abbc16 MM |
14257 | btrace_sync_conf (conf); |
14258 | ||
696c0d5e | 14259 | ptid_t ptid = tp->ptid; |
9accd112 MM |
14260 | set_general_thread (ptid); |
14261 | ||
ff52c073 CS |
14262 | buf += xsnprintf (buf, endbuf - buf, "%s", |
14263 | packets_descriptions[which_packet].name); | |
9accd112 | 14264 | putpkt (rs->buf); |
8d64371b | 14265 | getpkt (&rs->buf, 0); |
9accd112 | 14266 | |
ff52c073 | 14267 | if (m_features.packet_ok (rs->buf, which_packet) == PACKET_ERROR) |
9accd112 MM |
14268 | { |
14269 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14270 | error (_("Could not enable branch tracing for %s: %s"), | |
a068643d | 14271 | target_pid_to_str (ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14272 | else |
14273 | error (_("Could not enable branch tracing for %s."), | |
a068643d | 14274 | target_pid_to_str (ptid).c_str ()); |
9accd112 MM |
14275 | } |
14276 | ||
8d749320 | 14277 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
14278 | tinfo->ptid = ptid; |
14279 | ||
f4abbc16 MM |
14280 | /* If we fail to read the configuration, we lose some information, but the |
14281 | tracing itself is not impacted. */ | |
a70b8144 | 14282 | try |
492d29ea | 14283 | { |
0d8cbc5f | 14284 | btrace_read_config (tp, &tinfo->conf); |
492d29ea | 14285 | } |
230d2906 | 14286 | catch (const gdb_exception_error &err) |
492d29ea PA |
14287 | { |
14288 | if (err.message != NULL) | |
3d6e9d23 | 14289 | warning ("%s", err.what ()); |
492d29ea | 14290 | } |
f4abbc16 | 14291 | |
9accd112 MM |
14292 | return tinfo; |
14293 | } | |
14294 | ||
14295 | /* Disable branch tracing. */ | |
14296 | ||
f6ac5f3d PA |
14297 | void |
14298 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 | 14299 | { |
9accd112 | 14300 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
14301 | char *buf = rs->buf.data (); |
14302 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14303 | |
ff52c073 | 14304 | if (m_features.packet_support (PACKET_Qbtrace_off) != PACKET_ENABLE) |
9accd112 MM |
14305 | error (_("Target does not support branch tracing.")); |
14306 | ||
14307 | set_general_thread (tinfo->ptid); | |
14308 | ||
ff52c073 CS |
14309 | buf += xsnprintf (buf, endbuf - buf, "%s", |
14310 | packets_descriptions[PACKET_Qbtrace_off].name); | |
9accd112 | 14311 | putpkt (rs->buf); |
8d64371b | 14312 | getpkt (&rs->buf, 0); |
9accd112 | 14313 | |
ff52c073 | 14314 | if (m_features.packet_ok (rs->buf, PACKET_Qbtrace_off) == PACKET_ERROR) |
9accd112 MM |
14315 | { |
14316 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14317 | error (_("Could not disable branch tracing for %s: %s"), | |
a068643d | 14318 | target_pid_to_str (tinfo->ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14319 | else |
14320 | error (_("Could not disable branch tracing for %s."), | |
a068643d | 14321 | target_pid_to_str (tinfo->ptid).c_str ()); |
9accd112 MM |
14322 | } |
14323 | ||
14324 | xfree (tinfo); | |
14325 | } | |
14326 | ||
14327 | /* Teardown branch tracing. */ | |
14328 | ||
f6ac5f3d PA |
14329 | void |
14330 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14331 | { |
14332 | /* We must not talk to the target during teardown. */ | |
14333 | xfree (tinfo); | |
14334 | } | |
14335 | ||
14336 | /* Read the branch trace. */ | |
14337 | ||
f6ac5f3d PA |
14338 | enum btrace_error |
14339 | remote_target::read_btrace (struct btrace_data *btrace, | |
14340 | struct btrace_target_info *tinfo, | |
14341 | enum btrace_read_type type) | |
9accd112 | 14342 | { |
9accd112 | 14343 | const char *annex; |
9accd112 | 14344 | |
ff52c073 | 14345 | if (m_features.packet_support (PACKET_qXfer_btrace) != PACKET_ENABLE) |
9accd112 MM |
14346 | error (_("Target does not support branch tracing.")); |
14347 | ||
14348 | #if !defined(HAVE_LIBEXPAT) | |
14349 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
14350 | #endif | |
14351 | ||
14352 | switch (type) | |
14353 | { | |
864089d2 | 14354 | case BTRACE_READ_ALL: |
9accd112 MM |
14355 | annex = "all"; |
14356 | break; | |
864089d2 | 14357 | case BTRACE_READ_NEW: |
9accd112 MM |
14358 | annex = "new"; |
14359 | break; | |
969c39fb MM |
14360 | case BTRACE_READ_DELTA: |
14361 | annex = "delta"; | |
14362 | break; | |
9accd112 | 14363 | default: |
f34652de | 14364 | internal_error (_("Bad branch tracing read type: %u."), |
9accd112 MM |
14365 | (unsigned int) type); |
14366 | } | |
14367 | ||
9018be22 | 14368 | gdb::optional<gdb::char_vector> xml |
328d42d8 SM |
14369 | = target_read_stralloc (current_inferior ()->top_target (), |
14370 | TARGET_OBJECT_BTRACE, annex); | |
9018be22 | 14371 | if (!xml) |
969c39fb | 14372 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 14373 | |
9018be22 | 14374 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 14375 | |
969c39fb | 14376 | return BTRACE_ERR_NONE; |
9accd112 MM |
14377 | } |
14378 | ||
f6ac5f3d PA |
14379 | const struct btrace_config * |
14380 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
14381 | { |
14382 | return &tinfo->conf; | |
14383 | } | |
14384 | ||
57810aa7 | 14385 | bool |
f6ac5f3d | 14386 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 14387 | { |
ff52c073 CS |
14388 | return |
14389 | (m_features.packet_support (PACKET_augmented_libraries_svr4_read_feature) | |
14390 | == PACKET_ENABLE); | |
ced63ec0 GB |
14391 | } |
14392 | ||
9dd130a0 TT |
14393 | /* Implementation of to_load. */ |
14394 | ||
f6ac5f3d PA |
14395 | void |
14396 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
14397 | { |
14398 | generic_load (name, from_tty); | |
14399 | } | |
14400 | ||
c78fa86a GB |
14401 | /* Accepts an integer PID; returns a string representing a file that |
14402 | can be opened on the remote side to get the symbols for the child | |
14403 | process. Returns NULL if the operation is not supported. */ | |
14404 | ||
0e90c441 | 14405 | const char * |
f6ac5f3d | 14406 | remote_target::pid_to_exec_file (int pid) |
c78fa86a | 14407 | { |
9018be22 | 14408 | static gdb::optional<gdb::char_vector> filename; |
835205d0 | 14409 | char *annex = NULL; |
c78fa86a | 14410 | |
ff52c073 | 14411 | if (m_features.packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) |
c78fa86a GB |
14412 | return NULL; |
14413 | ||
5b6d1e4f | 14414 | inferior *inf = find_inferior_pid (this, pid); |
835205d0 | 14415 | if (inf == NULL) |
f34652de | 14416 | internal_error (_("not currently attached to process %d"), pid); |
835205d0 GB |
14417 | |
14418 | if (!inf->fake_pid_p) | |
14419 | { | |
14420 | const int annex_size = 9; | |
14421 | ||
224c3ddb | 14422 | annex = (char *) alloca (annex_size); |
835205d0 GB |
14423 | xsnprintf (annex, annex_size, "%x", pid); |
14424 | } | |
14425 | ||
328d42d8 | 14426 | filename = target_read_stralloc (current_inferior ()->top_target (), |
c78fa86a GB |
14427 | TARGET_OBJECT_EXEC_FILE, annex); |
14428 | ||
9018be22 | 14429 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
14430 | } |
14431 | ||
750ce8d1 YQ |
14432 | /* Implement the to_can_do_single_step target_ops method. */ |
14433 | ||
f6ac5f3d PA |
14434 | int |
14435 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
14436 | { |
14437 | /* We can only tell whether target supports single step or not by | |
14438 | supported s and S vCont actions if the stub supports vContSupported | |
14439 | feature. If the stub doesn't support vContSupported feature, | |
14440 | we have conservatively to think target doesn't supports single | |
14441 | step. */ | |
ff52c073 | 14442 | if (m_features.packet_support (PACKET_vContSupported) == PACKET_ENABLE) |
750ce8d1 YQ |
14443 | { |
14444 | struct remote_state *rs = get_remote_state (); | |
14445 | ||
ff52c073 | 14446 | if (m_features.packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 14447 | remote_vcont_probe (); |
750ce8d1 YQ |
14448 | |
14449 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
14450 | } | |
14451 | else | |
14452 | return 0; | |
14453 | } | |
14454 | ||
3a00c802 PA |
14455 | /* Implementation of the to_execution_direction method for the remote |
14456 | target. */ | |
14457 | ||
f6ac5f3d PA |
14458 | enum exec_direction_kind |
14459 | remote_target::execution_direction () | |
3a00c802 PA |
14460 | { |
14461 | struct remote_state *rs = get_remote_state (); | |
14462 | ||
14463 | return rs->last_resume_exec_dir; | |
14464 | } | |
14465 | ||
f6327dcb KB |
14466 | /* Return pointer to the thread_info struct which corresponds to |
14467 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
14468 | ||
f6ac5f3d PA |
14469 | thread_info * |
14470 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
14471 | int handle_len, | |
14472 | inferior *inf) | |
f6327dcb | 14473 | { |
5b6d1e4f | 14474 | for (thread_info *tp : all_non_exited_threads (this)) |
f6327dcb | 14475 | { |
7aabaf9d | 14476 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
14477 | |
14478 | if (tp->inf == inf && priv != NULL) | |
dda83cd7 | 14479 | { |
7aabaf9d | 14480 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 14481 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
dda83cd7 | 14482 | handle_len, priv->thread_handle.size ()); |
7aabaf9d | 14483 | if (memcmp (thread_handle, priv->thread_handle.data (), |
dda83cd7 | 14484 | handle_len) == 0) |
f6327dcb KB |
14485 | return tp; |
14486 | } | |
14487 | } | |
14488 | ||
14489 | return NULL; | |
14490 | } | |
14491 | ||
3d6c6204 KB |
14492 | gdb::byte_vector |
14493 | remote_target::thread_info_to_thread_handle (struct thread_info *tp) | |
14494 | { | |
14495 | remote_thread_info *priv = get_remote_thread_info (tp); | |
14496 | return priv->thread_handle; | |
14497 | } | |
14498 | ||
57810aa7 | 14499 | bool |
f6ac5f3d | 14500 | remote_target::can_async_p () |
6426a772 | 14501 | { |
fce6cd34 AB |
14502 | /* This flag should be checked in the common target.c code. */ |
14503 | gdb_assert (target_async_permitted); | |
75c99385 | 14504 | |
fce6cd34 AB |
14505 | /* We're async whenever the serial device can. */ |
14506 | struct remote_state *rs = get_remote_state (); | |
5d93a237 | 14507 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
14508 | } |
14509 | ||
57810aa7 | 14510 | bool |
f6ac5f3d | 14511 | remote_target::is_async_p () |
6426a772 | 14512 | { |
23860348 | 14513 | /* We're async whenever the serial device is. */ |
7054fa5b | 14514 | struct remote_state *rs = get_remote_state (); |
5d93a237 | 14515 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
14516 | } |
14517 | ||
2acceee2 JM |
14518 | /* Pass the SERIAL event on and up to the client. One day this code |
14519 | will be able to delay notifying the client of an event until the | |
23860348 | 14520 | point where an entire packet has been received. */ |
2acceee2 | 14521 | |
2acceee2 JM |
14522 | static serial_event_ftype remote_async_serial_handler; |
14523 | ||
6426a772 | 14524 | static void |
819cc324 | 14525 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14526 | { |
2acceee2 JM |
14527 | /* Don't propogate error information up to the client. Instead let |
14528 | the client find out about the error by querying the target. */ | |
b1a35af2 | 14529 | inferior_event_handler (INF_REG_EVENT); |
2acceee2 JM |
14530 | } |
14531 | ||
74531fed PA |
14532 | static void |
14533 | remote_async_inferior_event_handler (gdb_client_data data) | |
14534 | { | |
6b36ddeb | 14535 | inferior_event_handler (INF_REG_EVENT); |
74531fed PA |
14536 | } |
14537 | ||
5b6d1e4f PA |
14538 | int |
14539 | remote_target::async_wait_fd () | |
14540 | { | |
14541 | struct remote_state *rs = get_remote_state (); | |
14542 | return rs->remote_desc->fd; | |
14543 | } | |
14544 | ||
f6ac5f3d | 14545 | void |
4a570176 | 14546 | remote_target::async (bool enable) |
2acceee2 | 14547 | { |
5d93a237 TT |
14548 | struct remote_state *rs = get_remote_state (); |
14549 | ||
6a3753b3 | 14550 | if (enable) |
2acceee2 | 14551 | { |
88b496c3 | 14552 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14553 | |
14554 | /* If there are pending events in the stop reply queue tell the | |
14555 | event loop to process them. */ | |
953edf2b | 14556 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 14557 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14558 | /* For simplicity, below we clear the pending events token |
14559 | without remembering whether it is marked, so here we always | |
14560 | mark it. If there's actually no pending notification to | |
14561 | process, this ends up being a no-op (other than a spurious | |
14562 | event-loop wakeup). */ | |
14563 | if (target_is_non_stop_p ()) | |
14564 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14565 | } |
14566 | else | |
b7d2e916 PA |
14567 | { |
14568 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14569 | /* If the core is disabling async, it doesn't want to be |
14570 | disturbed with target events. Clear all async event sources | |
14571 | too. */ | |
6b8edb51 | 14572 | clear_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14573 | if (target_is_non_stop_p ()) |
14574 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14575 | } |
6426a772 JM |
14576 | } |
14577 | ||
65706a29 PA |
14578 | /* Implementation of the to_thread_events method. */ |
14579 | ||
f6ac5f3d PA |
14580 | void |
14581 | remote_target::thread_events (int enable) | |
65706a29 PA |
14582 | { |
14583 | struct remote_state *rs = get_remote_state (); | |
14584 | size_t size = get_remote_packet_size (); | |
65706a29 | 14585 | |
ff52c073 | 14586 | if (m_features.packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) |
65706a29 PA |
14587 | return; |
14588 | ||
8d64371b | 14589 | xsnprintf (rs->buf.data (), size, "QThreadEvents:%x", enable ? 1 : 0); |
65706a29 | 14590 | putpkt (rs->buf); |
8d64371b | 14591 | getpkt (&rs->buf, 0); |
65706a29 | 14592 | |
ff52c073 | 14593 | switch (m_features.packet_ok (rs->buf, PACKET_QThreadEvents)) |
65706a29 PA |
14594 | { |
14595 | case PACKET_OK: | |
8d64371b TT |
14596 | if (strcmp (rs->buf.data (), "OK") != 0) |
14597 | error (_("Remote refused setting thread events: %s"), rs->buf.data ()); | |
65706a29 PA |
14598 | break; |
14599 | case PACKET_ERROR: | |
8d64371b | 14600 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
65706a29 PA |
14601 | break; |
14602 | case PACKET_UNKNOWN: | |
14603 | break; | |
14604 | } | |
14605 | } | |
14606 | ||
d471ea57 | 14607 | static void |
981a3fb3 | 14608 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14609 | { |
37a105a1 | 14610 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14611 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14612 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14613 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14614 | |
2e783024 | 14615 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14616 | for (; list != NULL; list = list->next) |
14617 | if (strcmp (list->name, "Z-packet") == 0) | |
14618 | continue; | |
427c3a89 DJ |
14619 | else if (list->type == not_set_cmd) |
14620 | /* Alias commands are exactly like the original, except they | |
14621 | don't have the normal type. */ | |
14622 | continue; | |
14623 | else | |
37a105a1 | 14624 | { |
2e783024 | 14625 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14626 | |
112e8700 SM |
14627 | uiout->field_string ("name", list->name); |
14628 | uiout->text (": "); | |
427c3a89 | 14629 | if (list->type == show_cmd) |
f5c4fcd9 | 14630 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14631 | else |
14632 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 14633 | } |
d471ea57 | 14634 | } |
5a2468f5 | 14635 | |
0f71a2f6 | 14636 | |
23860348 | 14637 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
14638 | static void |
14639 | remote_new_objfile (struct objfile *objfile) | |
14640 | { | |
06c7226e SM |
14641 | /* The objfile change happened in that program space. */ |
14642 | program_space *pspace = current_program_space; | |
5d93a237 | 14643 | |
06c7226e SM |
14644 | /* The affected program space is possibly shared by multiple inferiors. |
14645 | Consider sending a qSymbol packet for each of the inferiors using that | |
14646 | program space. */ | |
14647 | for (inferior *inf : all_inferiors ()) | |
14648 | { | |
14649 | if (inf->pspace != pspace) | |
14650 | continue; | |
122373f7 | 14651 | |
06c7226e SM |
14652 | /* Check whether the inferior's process target is a remote target. */ |
14653 | remote_target *remote = as_remote_target (inf->process_target ()); | |
14654 | if (remote == nullptr) | |
14655 | continue; | |
14656 | ||
14657 | /* When we are attaching or handling a fork child and the shared library | |
14658 | subsystem reads the list of loaded libraries, we receive new objfile | |
14659 | events in between each found library. The libraries are read in an | |
14660 | undefined order, so if we gave the remote side a chance to look up | |
14661 | symbols between each objfile, we might give it an inconsistent picture | |
14662 | of the inferior. It could appear that a library A appears loaded but | |
14663 | a library B does not, even though library A requires library B. That | |
14664 | would present a state that couldn't normally exist in the inferior. | |
14665 | ||
14666 | So, skip these events, we'll give the remote a chance to look up | |
14667 | symbols once all the loaded libraries and their symbols are known to | |
14668 | GDB. */ | |
14669 | if (inf->in_initial_library_scan) | |
14670 | continue; | |
14671 | ||
14672 | if (!remote->has_execution (inf)) | |
14673 | continue; | |
14674 | ||
14675 | /* Need to switch to a specific thread, because remote_check_symbols will | |
14676 | set the general thread using INFERIOR_PTID. | |
122373f7 | 14677 | |
06c7226e SM |
14678 | It's possible to have inferiors with no thread here, because we are |
14679 | called very early in the connection process, while the inferior is | |
14680 | being set up, before threads are added. Just skip it, start_remote_1 | |
14681 | also calls remote_check_symbols when it's done setting things up. */ | |
14682 | thread_info *thread = any_thread_of_inferior (inf); | |
14683 | if (thread != nullptr) | |
14684 | { | |
14685 | scoped_restore_current_thread restore_thread; | |
14686 | switch_to_thread (thread); | |
14687 | remote->remote_check_symbols (); | |
14688 | } | |
14689 | } | |
dc8acb97 MS |
14690 | } |
14691 | ||
00bf0b85 SS |
14692 | /* Pull all the tracepoints defined on the target and create local |
14693 | data structures representing them. We don't want to create real | |
14694 | tracepoints yet, we don't want to mess up the user's existing | |
14695 | collection. */ | |
14696 | ||
f6ac5f3d PA |
14697 | int |
14698 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14699 | { |
00bf0b85 SS |
14700 | struct remote_state *rs = get_remote_state (); |
14701 | char *p; | |
d5551862 | 14702 | |
00bf0b85 SS |
14703 | /* Ask for a first packet of tracepoint definition. */ |
14704 | putpkt ("qTfP"); | |
8d64371b TT |
14705 | getpkt (&rs->buf, 0); |
14706 | p = rs->buf.data (); | |
00bf0b85 | 14707 | while (*p && *p != 'l') |
d5551862 | 14708 | { |
00bf0b85 SS |
14709 | parse_tracepoint_definition (p, utpp); |
14710 | /* Ask for another packet of tracepoint definition. */ | |
14711 | putpkt ("qTsP"); | |
8d64371b TT |
14712 | getpkt (&rs->buf, 0); |
14713 | p = rs->buf.data (); | |
d5551862 | 14714 | } |
00bf0b85 | 14715 | return 0; |
d5551862 SS |
14716 | } |
14717 | ||
f6ac5f3d PA |
14718 | int |
14719 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14720 | { |
00bf0b85 | 14721 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14722 | char *p; |
d5551862 | 14723 | |
00bf0b85 SS |
14724 | /* Ask for a first packet of variable definition. */ |
14725 | putpkt ("qTfV"); | |
8d64371b TT |
14726 | getpkt (&rs->buf, 0); |
14727 | p = rs->buf.data (); | |
00bf0b85 | 14728 | while (*p && *p != 'l') |
d5551862 | 14729 | { |
00bf0b85 SS |
14730 | parse_tsv_definition (p, utsvp); |
14731 | /* Ask for another packet of variable definition. */ | |
14732 | putpkt ("qTsV"); | |
8d64371b TT |
14733 | getpkt (&rs->buf, 0); |
14734 | p = rs->buf.data (); | |
d5551862 | 14735 | } |
00bf0b85 | 14736 | return 0; |
d5551862 SS |
14737 | } |
14738 | ||
c1e36e3e PA |
14739 | /* The "set/show range-stepping" show hook. */ |
14740 | ||
14741 | static void | |
14742 | show_range_stepping (struct ui_file *file, int from_tty, | |
14743 | struct cmd_list_element *c, | |
14744 | const char *value) | |
14745 | { | |
6cb06a8c TT |
14746 | gdb_printf (file, |
14747 | _("Debugger's willingness to use range stepping " | |
14748 | "is %s.\n"), value); | |
c1e36e3e PA |
14749 | } |
14750 | ||
6b8edb51 PA |
14751 | /* Return true if the vCont;r action is supported by the remote |
14752 | stub. */ | |
14753 | ||
14754 | bool | |
14755 | remote_target::vcont_r_supported () | |
14756 | { | |
ff52c073 | 14757 | if (m_features.packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 PA |
14758 | remote_vcont_probe (); |
14759 | ||
ff52c073 | 14760 | return (m_features.packet_support (PACKET_vCont) == PACKET_ENABLE |
6b8edb51 PA |
14761 | && get_remote_state ()->supports_vCont.r); |
14762 | } | |
14763 | ||
c1e36e3e PA |
14764 | /* The "set/show range-stepping" set hook. */ |
14765 | ||
14766 | static void | |
eb4c3f4a | 14767 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14768 | struct cmd_list_element *c) |
14769 | { | |
6b8edb51 PA |
14770 | /* When enabling, check whether range stepping is actually supported |
14771 | by the target, and warn if not. */ | |
c1e36e3e PA |
14772 | if (use_range_stepping) |
14773 | { | |
6b8edb51 PA |
14774 | remote_target *remote = get_current_remote_target (); |
14775 | if (remote == NULL | |
14776 | || !remote->vcont_r_supported ()) | |
14777 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
14778 | } |
14779 | } | |
14780 | ||
baf2b57f SM |
14781 | static void |
14782 | show_remote_debug (struct ui_file *file, int from_tty, | |
14783 | struct cmd_list_element *c, const char *value) | |
14784 | { | |
6cb06a8c TT |
14785 | gdb_printf (file, _("Debugging of remote protocol is %s.\n"), |
14786 | value); | |
baf2b57f SM |
14787 | } |
14788 | ||
14789 | static void | |
14790 | show_remote_timeout (struct ui_file *file, int from_tty, | |
14791 | struct cmd_list_element *c, const char *value) | |
14792 | { | |
6cb06a8c TT |
14793 | gdb_printf (file, |
14794 | _("Timeout limit to wait for target to respond is %s.\n"), | |
14795 | value); | |
baf2b57f SM |
14796 | } |
14797 | ||
dbe692af LM |
14798 | /* Implement the "supports_memory_tagging" target_ops method. */ |
14799 | ||
14800 | bool | |
14801 | remote_target::supports_memory_tagging () | |
14802 | { | |
ff52c073 | 14803 | return m_features.remote_memory_tagging_p (); |
2c2e7f87 LM |
14804 | } |
14805 | ||
14806 | /* Create the qMemTags packet given ADDRESS, LEN and TYPE. */ | |
14807 | ||
14808 | static void | |
14809 | create_fetch_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
14810 | size_t len, int type) | |
14811 | { | |
14812 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
14813 | ||
14814 | std::string request = string_printf ("qMemTags:%s,%s:%s", | |
14815 | phex_nz (address, addr_size), | |
14816 | phex_nz (len, sizeof (len)), | |
14817 | phex_nz (type, sizeof (type))); | |
14818 | ||
14819 | strcpy (packet.data (), request.c_str ()); | |
14820 | } | |
14821 | ||
14822 | /* Parse the qMemTags packet reply into TAGS. | |
14823 | ||
14824 | Return true if successful, false otherwise. */ | |
14825 | ||
14826 | static bool | |
14827 | parse_fetch_memtags_reply (const gdb::char_vector &reply, | |
14828 | gdb::byte_vector &tags) | |
14829 | { | |
14830 | if (reply.empty () || reply[0] == 'E' || reply[0] != 'm') | |
14831 | return false; | |
14832 | ||
14833 | /* Copy the tag data. */ | |
14834 | tags = hex2bin (reply.data () + 1); | |
14835 | ||
14836 | return true; | |
14837 | } | |
14838 | ||
14839 | /* Create the QMemTags packet given ADDRESS, LEN, TYPE and TAGS. */ | |
14840 | ||
14841 | static void | |
14842 | create_store_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
14843 | size_t len, int type, | |
14844 | const gdb::byte_vector &tags) | |
14845 | { | |
14846 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
14847 | ||
14848 | /* Put together the main packet, address and length. */ | |
14849 | std::string request = string_printf ("QMemTags:%s,%s:%s:", | |
14850 | phex_nz (address, addr_size), | |
14851 | phex_nz (len, sizeof (len)), | |
14852 | phex_nz (type, sizeof (type))); | |
14853 | request += bin2hex (tags.data (), tags.size ()); | |
14854 | ||
14855 | /* Check if we have exceeded the maximum packet size. */ | |
14856 | if (packet.size () < request.length ()) | |
14857 | error (_("Contents too big for packet QMemTags.")); | |
14858 | ||
14859 | strcpy (packet.data (), request.c_str ()); | |
dbe692af LM |
14860 | } |
14861 | ||
14862 | /* Implement the "fetch_memtags" target_ops method. */ | |
14863 | ||
14864 | bool | |
14865 | remote_target::fetch_memtags (CORE_ADDR address, size_t len, | |
14866 | gdb::byte_vector &tags, int type) | |
14867 | { | |
2c2e7f87 | 14868 | /* Make sure the qMemTags packet is supported. */ |
ff52c073 | 14869 | if (!m_features.remote_memory_tagging_p ()) |
2c2e7f87 LM |
14870 | gdb_assert_not_reached ("remote fetch_memtags called with packet disabled"); |
14871 | ||
14872 | struct remote_state *rs = get_remote_state (); | |
14873 | ||
14874 | create_fetch_memtags_request (rs->buf, address, len, type); | |
14875 | ||
14876 | putpkt (rs->buf); | |
14877 | getpkt (&rs->buf, 0); | |
14878 | ||
14879 | return parse_fetch_memtags_reply (rs->buf, tags); | |
dbe692af LM |
14880 | } |
14881 | ||
14882 | /* Implement the "store_memtags" target_ops method. */ | |
14883 | ||
14884 | bool | |
14885 | remote_target::store_memtags (CORE_ADDR address, size_t len, | |
14886 | const gdb::byte_vector &tags, int type) | |
14887 | { | |
2c2e7f87 | 14888 | /* Make sure the QMemTags packet is supported. */ |
ff52c073 | 14889 | if (!m_features.remote_memory_tagging_p ()) |
2c2e7f87 LM |
14890 | gdb_assert_not_reached ("remote store_memtags called with packet disabled"); |
14891 | ||
14892 | struct remote_state *rs = get_remote_state (); | |
14893 | ||
14894 | create_store_memtags_request (rs->buf, address, len, type, tags); | |
14895 | ||
14896 | putpkt (rs->buf); | |
14897 | getpkt (&rs->buf, 0); | |
14898 | ||
14899 | /* Verify if the request was successful. */ | |
14900 | return packet_check_result (rs->buf.data ()) == PACKET_OK; | |
dbe692af LM |
14901 | } |
14902 | ||
c39ebbf4 TV |
14903 | /* Return true if remote target T is non-stop. */ |
14904 | ||
14905 | bool | |
14906 | remote_target_is_non_stop_p (remote_target *t) | |
14907 | { | |
14908 | scoped_restore_current_thread restore_thread; | |
14909 | switch_to_target_no_thread (t); | |
14910 | ||
14911 | return target_is_non_stop_p (); | |
14912 | } | |
14913 | ||
754487e2 LM |
14914 | #if GDB_SELF_TEST |
14915 | ||
14916 | namespace selftests { | |
14917 | ||
14918 | static void | |
14919 | test_memory_tagging_functions () | |
14920 | { | |
14921 | remote_target remote; | |
14922 | ||
14923 | struct packet_config *config | |
ff52c073 | 14924 | = &remote.m_features.m_protocol_packets[PACKET_memory_tagging_feature]; |
754487e2 LM |
14925 | |
14926 | scoped_restore restore_memtag_support_ | |
14927 | = make_scoped_restore (&config->support); | |
14928 | ||
14929 | /* Test memory tagging packet support. */ | |
14930 | config->support = PACKET_SUPPORT_UNKNOWN; | |
14931 | SELF_CHECK (remote.supports_memory_tagging () == false); | |
14932 | config->support = PACKET_DISABLE; | |
14933 | SELF_CHECK (remote.supports_memory_tagging () == false); | |
14934 | config->support = PACKET_ENABLE; | |
14935 | SELF_CHECK (remote.supports_memory_tagging () == true); | |
14936 | ||
14937 | /* Setup testing. */ | |
14938 | gdb::char_vector packet; | |
14939 | gdb::byte_vector tags, bv; | |
14940 | std::string expected, reply; | |
14941 | packet.resize (32000); | |
14942 | ||
14943 | /* Test creating a qMemTags request. */ | |
14944 | ||
14945 | expected = "qMemTags:0,0:0"; | |
14946 | create_fetch_memtags_request (packet, 0x0, 0x0, 0); | |
14947 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
14948 | ||
14949 | expected = "qMemTags:deadbeef,10:1"; | |
14950 | create_fetch_memtags_request (packet, 0xdeadbeef, 16, 1); | |
14951 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
14952 | ||
14953 | /* Test parsing a qMemTags reply. */ | |
14954 | ||
14955 | /* Error reply, tags vector unmodified. */ | |
14956 | reply = "E00"; | |
14957 | strcpy (packet.data (), reply.c_str ()); | |
14958 | tags.resize (0); | |
14959 | SELF_CHECK (parse_fetch_memtags_reply (packet, tags) == false); | |
14960 | SELF_CHECK (tags.size () == 0); | |
14961 | ||
14962 | /* Valid reply, tags vector updated. */ | |
14963 | tags.resize (0); | |
14964 | bv.resize (0); | |
14965 | ||
14966 | for (int i = 0; i < 5; i++) | |
14967 | bv.push_back (i); | |
14968 | ||
14969 | reply = "m" + bin2hex (bv.data (), bv.size ()); | |
14970 | strcpy (packet.data (), reply.c_str ()); | |
14971 | ||
14972 | SELF_CHECK (parse_fetch_memtags_reply (packet, tags) == true); | |
14973 | SELF_CHECK (tags.size () == 5); | |
14974 | ||
14975 | for (int i = 0; i < 5; i++) | |
14976 | SELF_CHECK (tags[i] == i); | |
14977 | ||
14978 | /* Test creating a QMemTags request. */ | |
14979 | ||
14980 | /* Empty tag data. */ | |
14981 | tags.resize (0); | |
14982 | expected = "QMemTags:0,0:0:"; | |
14983 | create_store_memtags_request (packet, 0x0, 0x0, 0, tags); | |
14984 | SELF_CHECK (memcmp (packet.data (), expected.c_str (), | |
14985 | expected.length ()) == 0); | |
14986 | ||
14987 | /* Non-empty tag data. */ | |
14988 | tags.resize (0); | |
14989 | for (int i = 0; i < 5; i++) | |
14990 | tags.push_back (i); | |
14991 | expected = "QMemTags:deadbeef,ff:1:0001020304"; | |
14992 | create_store_memtags_request (packet, 0xdeadbeef, 255, 1, tags); | |
14993 | SELF_CHECK (memcmp (packet.data (), expected.c_str (), | |
14994 | expected.length ()) == 0); | |
14995 | } | |
14996 | ||
14997 | } // namespace selftests | |
14998 | #endif /* GDB_SELF_TEST */ | |
14999 | ||
6c265988 | 15000 | void _initialize_remote (); |
c906108c | 15001 | void |
6c265988 | 15002 | _initialize_remote () |
c906108c | 15003 | { |
d9f719f1 PA |
15004 | add_target (remote_target_info, remote_target::open); |
15005 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 15006 | |
dc8acb97 | 15007 | /* Hook into new objfile notification. */ |
c90e7d63 | 15008 | gdb::observers::new_objfile.attach (remote_new_objfile, "remote"); |
dc8acb97 | 15009 | |
c906108c SS |
15010 | #if 0 |
15011 | init_remote_threadtests (); | |
15012 | #endif | |
15013 | ||
23860348 | 15014 | /* set/show remote ... */ |
d471ea57 | 15015 | |
0743fc83 | 15016 | add_basic_prefix_cmd ("remote", class_maintenance, _("\ |
590042fc | 15017 | Remote protocol specific variables.\n\ |
5a2468f5 | 15018 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 15019 | the packets being used."), |
2f822da5 | 15020 | &remote_set_cmdlist, |
0743fc83 | 15021 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 15022 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
590042fc | 15023 | Remote protocol specific variables.\n\ |
5a2468f5 | 15024 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 15025 | the packets being used."), |
2f822da5 | 15026 | &remote_show_cmdlist, |
23860348 | 15027 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 15028 | |
1a966eab AC |
15029 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
15030 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
15031 | Argument is a single section name (default: all loaded sections).\n\ |
15032 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
15033 | &cmdlist); |
15034 | ||
e5b176f2 | 15035 | add_cmd ("packet", class_maintenance, cli_packet_command, _("\ |
1a966eab | 15036 | Send an arbitrary packet to a remote target.\n\ |
c906108c SS |
15037 | maintenance packet TEXT\n\ |
15038 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
15039 | this command sends the string TEXT to the inferior, and displays the\n\ | |
15040 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 15041 | terminating `#' character and checksum."), |
c906108c SS |
15042 | &maintenancelist); |
15043 | ||
9f260536 SM |
15044 | set_show_commands remotebreak_cmds |
15045 | = add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ | |
7915a72c AC |
15046 | Set whether to send break if interrupted."), _("\ |
15047 | Show whether to send break if interrupted."), _("\ | |
15048 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9f260536 SM |
15049 | set_remotebreak, show_remotebreak, |
15050 | &setlist, &showlist); | |
15051 | deprecate_cmd (remotebreak_cmds.set, "set remote interrupt-sequence"); | |
15052 | deprecate_cmd (remotebreak_cmds.show, "show remote interrupt-sequence"); | |
9a7071a8 JB |
15053 | |
15054 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
15055 | interrupt_sequence_modes, &interrupt_sequence_mode, |
15056 | _("\ | |
9a7071a8 JB |
15057 | Set interrupt sequence to remote target."), _("\ |
15058 | Show interrupt sequence to remote target."), _("\ | |
15059 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
15060 | NULL, show_interrupt_sequence, | |
15061 | &remote_set_cmdlist, | |
15062 | &remote_show_cmdlist); | |
15063 | ||
15064 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
15065 | &interrupt_on_connect, _("\ | |
590042fc PW |
15066 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ |
15067 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ | |
9a7071a8 JB |
15068 | If set, interrupt sequence is sent to remote target."), |
15069 | NULL, NULL, | |
15070 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 15071 | |
23860348 | 15072 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 15073 | |
1a966eab AC |
15074 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
15075 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 15076 | &setlist); |
1a966eab AC |
15077 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
15078 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
15079 | &showlist); |
15080 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
15081 | set_memory_write_packet_size, _("\ |
15082 | Set the maximum number of bytes per memory-write packet.\n\ | |
15083 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
15084 | default packet size. The actual limit is further reduced\n\ | |
15085 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
15086 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
15087 | &remote_set_cmdlist); |
15088 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
15089 | set_memory_read_packet_size, _("\ |
15090 | Set the maximum number of bytes per memory-read packet.\n\ | |
15091 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
15092 | default packet size. The actual limit is further reduced\n\ | |
15093 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
15094 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
15095 | &remote_set_cmdlist); |
15096 | add_cmd ("memory-write-packet-size", no_class, | |
15097 | show_memory_write_packet_size, | |
1a966eab | 15098 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
15099 | &remote_show_cmdlist); |
15100 | add_cmd ("memory-read-packet-size", no_class, | |
15101 | show_memory_read_packet_size, | |
1a966eab | 15102 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 15103 | &remote_show_cmdlist); |
c906108c | 15104 | |
055303e2 | 15105 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
15106 | &remote_hw_watchpoint_limit, _("\ |
15107 | Set the maximum number of target hardware watchpoints."), _("\ | |
15108 | Show the maximum number of target hardware watchpoints."), _("\ | |
055303e2 AB |
15109 | Specify \"unlimited\" for unlimited hardware watchpoints."), |
15110 | NULL, show_hardware_watchpoint_limit, | |
15111 | &remote_set_cmdlist, | |
15112 | &remote_show_cmdlist); | |
15113 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-length-limit", | |
15114 | no_class, | |
480a3f21 PW |
15115 | &remote_hw_watchpoint_length_limit, _("\ |
15116 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
15117 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
055303e2 AB |
15118 | Specify \"unlimited\" to allow watchpoints of unlimited size."), |
15119 | NULL, show_hardware_watchpoint_length_limit, | |
480a3f21 | 15120 | &remote_set_cmdlist, &remote_show_cmdlist); |
055303e2 | 15121 | add_setshow_zuinteger_unlimited_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
15122 | &remote_hw_breakpoint_limit, _("\ |
15123 | Set the maximum number of target hardware breakpoints."), _("\ | |
15124 | Show the maximum number of target hardware breakpoints."), _("\ | |
055303e2 AB |
15125 | Specify \"unlimited\" for unlimited hardware breakpoints."), |
15126 | NULL, show_hardware_breakpoint_limit, | |
b3f42336 | 15127 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 15128 | |
1b493192 PA |
15129 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
15130 | &remote_address_size, _("\ | |
4d28ad1e AC |
15131 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
15132 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
15133 | NULL, |
15134 | NULL, /* FIXME: i18n: */ | |
15135 | &setlist, &showlist); | |
c906108c | 15136 | |
ca4f7f8b PA |
15137 | init_all_packet_configs (); |
15138 | ||
ff52c073 | 15139 | add_packet_config_cmd (PACKET_X, "X", "binary-download", 1); |
0f71a2f6 | 15140 | |
ff52c073 | 15141 | add_packet_config_cmd (PACKET_vCont, "vCont", "verbose-resume", 0); |
506fb367 | 15142 | |
ff52c073 CS |
15143 | add_packet_config_cmd (PACKET_QPassSignals, "QPassSignals", "pass-signals", |
15144 | 0); | |
89be2091 | 15145 | |
ff52c073 CS |
15146 | add_packet_config_cmd (PACKET_QCatchSyscalls, "QCatchSyscalls", |
15147 | "catch-syscalls", 0); | |
82075af2 | 15148 | |
ff52c073 CS |
15149 | add_packet_config_cmd (PACKET_QProgramSignals, "QProgramSignals", |
15150 | "program-signals", 0); | |
9b224c5e | 15151 | |
ff52c073 CS |
15152 | add_packet_config_cmd (PACKET_QSetWorkingDir, "QSetWorkingDir", |
15153 | "set-working-dir", 0); | |
bc3b087d | 15154 | |
ff52c073 CS |
15155 | add_packet_config_cmd (PACKET_QStartupWithShell, "QStartupWithShell", |
15156 | "startup-with-shell", 0); | |
aefd8b33 | 15157 | |
ff52c073 CS |
15158 | add_packet_config_cmd (PACKET_QEnvironmentHexEncoded,"QEnvironmentHexEncoded", |
15159 | "environment-hex-encoded", 0); | |
0a2dde4a | 15160 | |
ff52c073 CS |
15161 | add_packet_config_cmd (PACKET_QEnvironmentReset, "QEnvironmentReset", |
15162 | "environment-reset", 0); | |
0a2dde4a | 15163 | |
ff52c073 CS |
15164 | add_packet_config_cmd (PACKET_QEnvironmentUnset, "QEnvironmentUnset", |
15165 | "environment-unset", 0); | |
0a2dde4a | 15166 | |
ff52c073 | 15167 | add_packet_config_cmd (PACKET_qSymbol, "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 15168 | |
ff52c073 | 15169 | add_packet_config_cmd (PACKET_P, "P", "set-register", 1); |
d471ea57 | 15170 | |
ff52c073 | 15171 | add_packet_config_cmd (PACKET_p, "p", "fetch-register", 1); |
b96ec7ac | 15172 | |
ff52c073 | 15173 | add_packet_config_cmd (PACKET_Z0, "Z0", "software-breakpoint", 0); |
d471ea57 | 15174 | |
ff52c073 | 15175 | add_packet_config_cmd (PACKET_Z1, "Z1", "hardware-breakpoint", 0); |
d471ea57 | 15176 | |
ff52c073 | 15177 | add_packet_config_cmd (PACKET_Z2, "Z2", "write-watchpoint", 0); |
d471ea57 | 15178 | |
ff52c073 | 15179 | add_packet_config_cmd (PACKET_Z3, "Z3", "read-watchpoint", 0); |
d471ea57 | 15180 | |
ff52c073 | 15181 | add_packet_config_cmd (PACKET_Z4, "Z4", "access-watchpoint", 0); |
d471ea57 | 15182 | |
ff52c073 CS |
15183 | add_packet_config_cmd (PACKET_qXfer_auxv, "qXfer:auxv:read", |
15184 | "read-aux-vector", 0); | |
802188a7 | 15185 | |
ff52c073 CS |
15186 | add_packet_config_cmd (PACKET_qXfer_exec_file, "qXfer:exec-file:read", |
15187 | "pid-to-exec-file", 0); | |
c78fa86a | 15188 | |
ff52c073 | 15189 | add_packet_config_cmd (PACKET_qXfer_features, |
23181151 DJ |
15190 | "qXfer:features:read", "target-features", 0); |
15191 | ||
ff52c073 CS |
15192 | add_packet_config_cmd (PACKET_qXfer_libraries, "qXfer:libraries:read", |
15193 | "library-info", 0); | |
cfa9d6d9 | 15194 | |
ff52c073 | 15195 | add_packet_config_cmd (PACKET_qXfer_libraries_svr4, |
2268b414 JK |
15196 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); |
15197 | ||
ff52c073 CS |
15198 | add_packet_config_cmd (PACKET_qXfer_memory_map, "qXfer:memory-map:read", |
15199 | "memory-map", 0); | |
fd79ecee | 15200 | |
ff52c073 | 15201 | add_packet_config_cmd (PACKET_qXfer_osdata, "qXfer:osdata:read", "osdata", 0); |
07e059b5 | 15202 | |
ff52c073 CS |
15203 | add_packet_config_cmd (PACKET_qXfer_threads, "qXfer:threads:read", "threads", |
15204 | 0); | |
dc146f7c | 15205 | |
ff52c073 CS |
15206 | add_packet_config_cmd (PACKET_qXfer_siginfo_read, "qXfer:siginfo:read", |
15207 | "read-siginfo-object", 0); | |
4aa995e1 | 15208 | |
ff52c073 CS |
15209 | add_packet_config_cmd (PACKET_qXfer_siginfo_write, "qXfer:siginfo:write", |
15210 | "write-siginfo-object", 0); | |
4aa995e1 | 15211 | |
ff52c073 CS |
15212 | add_packet_config_cmd (PACKET_qXfer_traceframe_info, |
15213 | "qXfer:traceframe-info:read", "traceframe-info", 0); | |
b3b9301e | 15214 | |
ff52c073 CS |
15215 | add_packet_config_cmd (PACKET_qXfer_uib, "qXfer:uib:read", |
15216 | "unwind-info-block", 0); | |
169081d0 | 15217 | |
ff52c073 CS |
15218 | add_packet_config_cmd (PACKET_qGetTLSAddr, "qGetTLSAddr", |
15219 | "get-thread-local-storage-address", 0); | |
38691318 | 15220 | |
ff52c073 CS |
15221 | add_packet_config_cmd (PACKET_qGetTIBAddr, "qGetTIBAddr", |
15222 | "get-thread-information-block-address", 0); | |
711e434b | 15223 | |
ff52c073 | 15224 | add_packet_config_cmd (PACKET_bc, "bc", "reverse-continue", 0); |
40ab02ce | 15225 | |
ff52c073 | 15226 | add_packet_config_cmd (PACKET_bs, "bs", "reverse-step", 0); |
40ab02ce | 15227 | |
ff52c073 CS |
15228 | add_packet_config_cmd (PACKET_qSupported, "qSupported", "supported-packets", |
15229 | 0); | |
be2a5f71 | 15230 | |
ff52c073 CS |
15231 | add_packet_config_cmd (PACKET_qSearch_memory, "qSearch:memory", |
15232 | "search-memory", 0); | |
08388c79 | 15233 | |
ff52c073 | 15234 | add_packet_config_cmd (PACKET_qTStatus, "qTStatus", "trace-status", 0); |
bd3eecc3 | 15235 | |
ff52c073 | 15236 | add_packet_config_cmd (PACKET_vFile_setfs, "vFile:setfs", "hostio-setfs", 0); |
15a201c8 | 15237 | |
ff52c073 | 15238 | add_packet_config_cmd (PACKET_vFile_open, "vFile:open", "hostio-open", 0); |
a6b151f1 | 15239 | |
ff52c073 | 15240 | add_packet_config_cmd (PACKET_vFile_pread, "vFile:pread", "hostio-pread", 0); |
a6b151f1 | 15241 | |
ff52c073 CS |
15242 | add_packet_config_cmd (PACKET_vFile_pwrite, "vFile:pwrite", "hostio-pwrite", |
15243 | 0); | |
a6b151f1 | 15244 | |
ff52c073 | 15245 | add_packet_config_cmd (PACKET_vFile_close, "vFile:close", "hostio-close", 0); |
a6b151f1 | 15246 | |
ff52c073 CS |
15247 | add_packet_config_cmd (PACKET_vFile_unlink, "vFile:unlink", "hostio-unlink", |
15248 | 0); | |
a6b151f1 | 15249 | |
ff52c073 CS |
15250 | add_packet_config_cmd (PACKET_vFile_readlink, "vFile:readlink", |
15251 | "hostio-readlink", 0); | |
b9e7b9c3 | 15252 | |
ff52c073 | 15253 | add_packet_config_cmd (PACKET_vFile_fstat, "vFile:fstat", "hostio-fstat", 0); |
0a93529c | 15254 | |
ff52c073 | 15255 | add_packet_config_cmd (PACKET_vAttach, "vAttach", "attach", 0); |
2d717e4f | 15256 | |
ff52c073 | 15257 | add_packet_config_cmd (PACKET_vRun, "vRun", "run", 0); |
2d717e4f | 15258 | |
ff52c073 | 15259 | add_packet_config_cmd (PACKET_QStartNoAckMode, "QStartNoAckMode", "noack", 0); |
a6f3e723 | 15260 | |
ff52c073 | 15261 | add_packet_config_cmd (PACKET_vKill, "vKill", "kill", 0); |
82f73884 | 15262 | |
ff52c073 | 15263 | add_packet_config_cmd (PACKET_qAttached, "qAttached", "query-attached", 0); |
0b16c5cf | 15264 | |
ff52c073 CS |
15265 | add_packet_config_cmd (PACKET_ConditionalTracepoints, |
15266 | "ConditionalTracepoints", "conditional-tracepoints", | |
15267 | 0); | |
3788aec7 | 15268 | |
ff52c073 CS |
15269 | add_packet_config_cmd (PACKET_ConditionalBreakpoints, |
15270 | "ConditionalBreakpoints", "conditional-breakpoints", | |
15271 | 0); | |
3788aec7 | 15272 | |
ff52c073 | 15273 | add_packet_config_cmd (PACKET_BreakpointCommands, "BreakpointCommands", |
d3ce09f5 SS |
15274 | "breakpoint-commands", 0); |
15275 | ||
ff52c073 CS |
15276 | add_packet_config_cmd (PACKET_FastTracepoints, "FastTracepoints", |
15277 | "fast-tracepoints", 0); | |
782b2b07 | 15278 | |
ff52c073 CS |
15279 | add_packet_config_cmd (PACKET_TracepointSource, "TracepointSource", |
15280 | "TracepointSource", 0); | |
409873ef | 15281 | |
ff52c073 | 15282 | add_packet_config_cmd (PACKET_QAllow, "QAllow", "allow", 0); |
d914c394 | 15283 | |
ff52c073 CS |
15284 | add_packet_config_cmd (PACKET_StaticTracepoints, "StaticTracepoints", |
15285 | "static-tracepoints", 0); | |
0fb4aa4b | 15286 | |
ff52c073 CS |
15287 | add_packet_config_cmd (PACKET_InstallInTrace, "InstallInTrace", |
15288 | "install-in-trace", 0); | |
1e4d1764 | 15289 | |
ff52c073 | 15290 | add_packet_config_cmd (PACKET_qXfer_statictrace_read, |
dda83cd7 | 15291 | "qXfer:statictrace:read", "read-sdata-object", 0); |
0fb4aa4b | 15292 | |
ff52c073 CS |
15293 | add_packet_config_cmd (PACKET_qXfer_fdpic, "qXfer:fdpic:read", |
15294 | "read-fdpic-loadmap", 0); | |
78d85199 | 15295 | |
ff52c073 CS |
15296 | add_packet_config_cmd (PACKET_QDisableRandomization, "QDisableRandomization", |
15297 | "disable-randomization", 0); | |
03583c20 | 15298 | |
ff52c073 | 15299 | add_packet_config_cmd (PACKET_QAgent, "QAgent", "agent", 0); |
d1feda86 | 15300 | |
ff52c073 CS |
15301 | add_packet_config_cmd (PACKET_QTBuffer_size, "QTBuffer:size", |
15302 | "trace-buffer-size", 0); | |
f6f899bf | 15303 | |
ff52c073 CS |
15304 | add_packet_config_cmd (PACKET_Qbtrace_off, "Qbtrace:off", "disable-btrace", |
15305 | 0); | |
9accd112 | 15306 | |
ff52c073 CS |
15307 | add_packet_config_cmd (PACKET_Qbtrace_bts, "Qbtrace:bts", "enable-btrace-bts", |
15308 | 0); | |
b20a6524 | 15309 | |
ff52c073 CS |
15310 | add_packet_config_cmd (PACKET_Qbtrace_pt, "Qbtrace:pt", "enable-btrace-pt", |
15311 | 0); | |
9accd112 | 15312 | |
ff52c073 | 15313 | add_packet_config_cmd (PACKET_qXfer_btrace, "qXfer:btrace", "read-btrace", 0); |
9accd112 | 15314 | |
ff52c073 CS |
15315 | add_packet_config_cmd (PACKET_qXfer_btrace_conf, "qXfer:btrace-conf", |
15316 | "read-btrace-conf", 0); | |
f4abbc16 | 15317 | |
ff52c073 CS |
15318 | add_packet_config_cmd (PACKET_Qbtrace_conf_bts_size, "Qbtrace-conf:bts:size", |
15319 | "btrace-conf-bts-size", 0); | |
d33501a5 | 15320 | |
ff52c073 CS |
15321 | add_packet_config_cmd (PACKET_multiprocess_feature, "multiprocess-feature", |
15322 | "multiprocess-feature", 0); | |
73b8c1fd | 15323 | |
ff52c073 CS |
15324 | add_packet_config_cmd (PACKET_swbreak_feature, "swbreak-feature", |
15325 | "swbreak-feature", 0); | |
f7e6eed5 | 15326 | |
ff52c073 CS |
15327 | add_packet_config_cmd (PACKET_hwbreak_feature, "hwbreak-feature", |
15328 | "hwbreak-feature", 0); | |
f7e6eed5 | 15329 | |
ff52c073 CS |
15330 | add_packet_config_cmd (PACKET_fork_event_feature, "fork-event-feature", |
15331 | "fork-event-feature", 0); | |
89245bc0 | 15332 | |
ff52c073 CS |
15333 | add_packet_config_cmd (PACKET_vfork_event_feature, "vfork-event-feature", |
15334 | "vfork-event-feature", 0); | |
89245bc0 | 15335 | |
ff52c073 CS |
15336 | add_packet_config_cmd (PACKET_Qbtrace_conf_pt_size, "Qbtrace-conf:pt:size", |
15337 | "btrace-conf-pt-size", 0); | |
b20a6524 | 15338 | |
ff52c073 CS |
15339 | add_packet_config_cmd (PACKET_vContSupported, "vContSupported", |
15340 | "verbose-resume-supported", 0); | |
750ce8d1 | 15341 | |
ff52c073 CS |
15342 | add_packet_config_cmd (PACKET_exec_event_feature, "exec-event-feature", |
15343 | "exec-event-feature", 0); | |
94585166 | 15344 | |
ff52c073 | 15345 | add_packet_config_cmd (PACKET_vCtrlC, "vCtrlC", "ctrl-c", 0); |
de979965 | 15346 | |
ff52c073 CS |
15347 | add_packet_config_cmd (PACKET_QThreadEvents, "QThreadEvents", "thread-events", |
15348 | 0); | |
65706a29 | 15349 | |
ff52c073 CS |
15350 | add_packet_config_cmd (PACKET_no_resumed, "N stop reply", |
15351 | "no-resumed-stop-reply", 0); | |
f2faf941 | 15352 | |
ff52c073 | 15353 | add_packet_config_cmd (PACKET_memory_tagging_feature, |
2c2e7f87 LM |
15354 | "memory-tagging-feature", "memory-tagging-feature", 0); |
15355 | ||
0b736949 DB |
15356 | /* Assert that we've registered "set remote foo-packet" commands |
15357 | for all packet configs. */ | |
ca4f7f8b PA |
15358 | { |
15359 | int i; | |
15360 | ||
15361 | for (i = 0; i < PACKET_MAX; i++) | |
15362 | { | |
15363 | /* Ideally all configs would have a command associated. Some | |
15364 | still don't though. */ | |
15365 | int excepted; | |
15366 | ||
15367 | switch (i) | |
15368 | { | |
15369 | case PACKET_QNonStop: | |
ca4f7f8b PA |
15370 | case PACKET_EnableDisableTracepoints_feature: |
15371 | case PACKET_tracenz_feature: | |
15372 | case PACKET_DisconnectedTracing_feature: | |
15373 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
15374 | case PACKET_qCRC: |
15375 | /* Additions to this list need to be well justified: | |
15376 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
15377 | excepted = 1; |
15378 | break; | |
15379 | default: | |
15380 | excepted = 0; | |
15381 | break; | |
15382 | } | |
15383 | ||
15384 | /* This catches both forgetting to add a config command, and | |
15385 | forgetting to remove a packet from the exception list. */ | |
ff52c073 | 15386 | gdb_assert (excepted == (packets_descriptions[i].name == NULL)); |
ca4f7f8b PA |
15387 | } |
15388 | } | |
15389 | ||
37a105a1 DJ |
15390 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
15391 | Z sub-packet has its own set and show commands, but users may | |
15392 | have sets to this variable in their .gdbinit files (or in their | |
15393 | documentation). */ | |
e9e68a56 | 15394 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c | 15395 | &remote_Z_packet_detect, _("\ |
590042fc PW |
15396 | Set use of remote protocol `Z' packets."), _("\ |
15397 | Show use of remote protocol `Z' packets."), _("\ | |
3b64bf98 | 15398 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 15399 | packets."), |
e9e68a56 | 15400 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
15401 | show_remote_protocol_Z_packet_cmd, |
15402 | /* FIXME: i18n: Use of remote protocol | |
15403 | `Z' packets is %s. */ | |
e9e68a56 | 15404 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 15405 | |
0743fc83 | 15406 | add_basic_prefix_cmd ("remote", class_files, _("\ |
590042fc | 15407 | Manipulate files on the remote system.\n\ |
a6b151f1 | 15408 | Transfer files to and from the remote target system."), |
2f822da5 | 15409 | &remote_cmdlist, |
0743fc83 | 15410 | 0 /* allow-unknown */, &cmdlist); |
a6b151f1 DJ |
15411 | |
15412 | add_cmd ("put", class_files, remote_put_command, | |
15413 | _("Copy a local file to the remote system."), | |
15414 | &remote_cmdlist); | |
15415 | ||
15416 | add_cmd ("get", class_files, remote_get_command, | |
15417 | _("Copy a remote file to the local system."), | |
15418 | &remote_cmdlist); | |
15419 | ||
15420 | add_cmd ("delete", class_files, remote_delete_command, | |
15421 | _("Delete a remote file."), | |
15422 | &remote_cmdlist); | |
15423 | ||
2d717e4f | 15424 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 15425 | &remote_exec_file_var, _("\ |
590042fc PW |
15426 | Set the remote pathname for \"run\"."), _("\ |
15427 | Show the remote pathname for \"run\"."), NULL, | |
94585166 DB |
15428 | set_remote_exec_file, |
15429 | show_remote_exec_file, | |
15430 | &remote_set_cmdlist, | |
15431 | &remote_show_cmdlist); | |
2d717e4f | 15432 | |
c1e36e3e PA |
15433 | add_setshow_boolean_cmd ("range-stepping", class_run, |
15434 | &use_range_stepping, _("\ | |
15435 | Enable or disable range stepping."), _("\ | |
15436 | Show whether target-assisted range stepping is enabled."), _("\ | |
15437 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
15438 | tells the target to step the corresponding range of addresses itself instead\n\ | |
15439 | of issuing multiple single-steps. This speeds up source level\n\ | |
15440 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
15441 | stepping is supported by the target. The default is on."), | |
15442 | set_range_stepping, | |
15443 | show_range_stepping, | |
15444 | &setlist, | |
15445 | &showlist); | |
15446 | ||
ed2b7c17 TT |
15447 | add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\ |
15448 | Set watchdog timer."), _("\ | |
15449 | Show watchdog timer."), _("\ | |
15450 | When non-zero, this timeout is used instead of waiting forever for a target\n\ | |
15451 | to finish a low-level step or continue operation. If the specified amount\n\ | |
15452 | of time passes without a response from the target, an error occurs."), | |
15453 | NULL, | |
15454 | show_watchdog, | |
15455 | &setlist, &showlist); | |
15456 | ||
6cc8564b LM |
15457 | add_setshow_zuinteger_unlimited_cmd ("remote-packet-max-chars", no_class, |
15458 | &remote_packet_max_chars, _("\ | |
15459 | Set the maximum number of characters to display for each remote packet."), _("\ | |
15460 | Show the maximum number of characters to display for each remote packet."), _("\ | |
15461 | Specify \"unlimited\" to display all the characters."), | |
15462 | NULL, show_remote_packet_max_chars, | |
15463 | &setdebuglist, &showdebuglist); | |
15464 | ||
02349803 SM |
15465 | add_setshow_boolean_cmd ("remote", no_class, &remote_debug, |
15466 | _("Set debugging of remote protocol."), | |
15467 | _("Show debugging of remote protocol."), | |
15468 | _("\ | |
baf2b57f SM |
15469 | When enabled, each packet sent or received with the remote target\n\ |
15470 | is displayed."), | |
02349803 SM |
15471 | NULL, |
15472 | show_remote_debug, | |
15473 | &setdebuglist, &showdebuglist); | |
baf2b57f SM |
15474 | |
15475 | add_setshow_zuinteger_unlimited_cmd ("remotetimeout", no_class, | |
15476 | &remote_timeout, _("\ | |
15477 | Set timeout limit to wait for target to respond."), _("\ | |
15478 | Show timeout limit to wait for target to respond."), _("\ | |
15479 | This value is used to set the time limit for gdb to wait for a response\n\ | |
15480 | from the target."), | |
15481 | NULL, | |
15482 | show_remote_timeout, | |
15483 | &setlist, &showlist); | |
15484 | ||
449092f6 | 15485 | /* Eventually initialize fileio. See fileio.c */ |
3f4d92eb | 15486 | initialize_remote_fileio (&remote_set_cmdlist, &remote_show_cmdlist); |
754487e2 LM |
15487 | |
15488 | #if GDB_SELF_TEST | |
15489 | selftests::register_test ("remote_memory_tagging", | |
15490 | selftests::test_memory_tagging_functions); | |
15491 | #endif | |
c906108c | 15492 | } |