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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
88b9d363 | 3 | Copyright (C) 1988-2022 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" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
76727919 | 39 | #include "observable.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
268a13a5 TT |
45 | #include "gdbsupport/filestuff.h" |
46 | #include "gdbsupport/rsp-low.h" | |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
268a13a5 | 50 | #include "gdbsupport/gdb_sys_time.h" |
c906108c | 51 | |
400b5eca | 52 | #include "gdbsupport/event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
7e10abd1 | 59 | #include "gdbcore.h" |
6240bebf | 60 | |
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
268a13a5 | 71 | #include "gdbsupport/agent.h" |
9accd112 | 72 | #include "btrace.h" |
c0272db5 | 73 | #include "record-btrace.h" |
325fac50 | 74 | #include <algorithm> |
268a13a5 TT |
75 | #include "gdbsupport/scoped_restore.h" |
76 | #include "gdbsupport/environ.h" | |
77 | #include "gdbsupport/byte-vector.h" | |
4a72de73 | 78 | #include "gdbsupport/search.h" |
39ef2f62 | 79 | #include <algorithm> |
9d6eea31 | 80 | #include <unordered_map> |
93b54c8e | 81 | #include "async-event.h" |
754487e2 | 82 | #include "gdbsupport/selftest.h" |
35b1e5cc | 83 | |
f6ac5f3d PA |
84 | /* The remote target. */ |
85 | ||
d9f719f1 PA |
86 | static const char remote_doc[] = N_("\ |
87 | Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
88 | Specify the serial device it is connected to\n\ | |
89 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
90 | ||
cda09ec9 SM |
91 | /* See remote.h */ |
92 | ||
02349803 | 93 | bool remote_debug = false; |
cda09ec9 | 94 | |
6b8edb51 PA |
95 | #define OPAQUETHREADBYTES 8 |
96 | ||
97 | /* a 64 bit opaque identifier */ | |
98 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
99 | ||
100 | struct gdb_ext_thread_info; | |
101 | struct threads_listing_context; | |
102 | typedef int (*rmt_thread_action) (threadref *ref, void *context); | |
103 | struct protocol_feature; | |
104 | struct packet_reg; | |
105 | ||
106 | struct stop_reply; | |
32603266 | 107 | typedef std::unique_ptr<stop_reply> stop_reply_up; |
6b8edb51 PA |
108 | |
109 | /* Generic configuration support for packets the stub optionally | |
110 | supports. Allows the user to specify the use of the packet as well | |
111 | as allowing GDB to auto-detect support in the remote stub. */ | |
112 | ||
113 | enum packet_support | |
114 | { | |
115 | PACKET_SUPPORT_UNKNOWN = 0, | |
116 | PACKET_ENABLE, | |
117 | PACKET_DISABLE | |
118 | }; | |
119 | ||
120 | /* Analyze a packet's return value and update the packet config | |
121 | accordingly. */ | |
122 | ||
123 | enum packet_result | |
124 | { | |
125 | PACKET_ERROR, | |
126 | PACKET_OK, | |
127 | PACKET_UNKNOWN | |
128 | }; | |
129 | ||
130 | struct threads_listing_context; | |
3c69da40 PA |
131 | |
132 | /* Stub vCont actions support. | |
133 | ||
134 | Each field is a boolean flag indicating whether the stub reports | |
135 | support for the corresponding action. */ | |
136 | ||
137 | struct vCont_action_support | |
138 | { | |
139 | /* vCont;t */ | |
140 | bool t = false; | |
141 | ||
142 | /* vCont;r */ | |
143 | bool r = false; | |
144 | ||
145 | /* vCont;s */ | |
146 | bool s = false; | |
147 | ||
148 | /* vCont;S */ | |
149 | bool S = false; | |
150 | }; | |
151 | ||
405feb71 | 152 | /* About this many threadids fit in a packet. */ |
3c69da40 PA |
153 | |
154 | #define MAXTHREADLISTRESULTS 32 | |
155 | ||
156 | /* Data for the vFile:pread readahead cache. */ | |
157 | ||
158 | struct readahead_cache | |
159 | { | |
160 | /* Invalidate the readahead cache. */ | |
161 | void invalidate (); | |
162 | ||
163 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
164 | void invalidate_fd (int fd); | |
165 | ||
166 | /* Serve pread from the readahead cache. Returns number of bytes | |
167 | read, or 0 if the request can't be served from the cache. */ | |
168 | int pread (int fd, gdb_byte *read_buf, size_t len, ULONGEST offset); | |
169 | ||
170 | /* The file descriptor for the file that is being cached. -1 if the | |
171 | cache is invalid. */ | |
172 | int fd = -1; | |
173 | ||
174 | /* The offset into the file that the cache buffer corresponds | |
175 | to. */ | |
176 | ULONGEST offset = 0; | |
177 | ||
178 | /* The buffer holding the cache contents. */ | |
179 | gdb_byte *buf = nullptr; | |
180 | /* The buffer's size. We try to read as much as fits into a packet | |
181 | at a time. */ | |
182 | size_t bufsize = 0; | |
183 | ||
184 | /* Cache hit and miss counters. */ | |
185 | ULONGEST hit_count = 0; | |
186 | ULONGEST miss_count = 0; | |
187 | }; | |
188 | ||
189 | /* Description of the remote protocol for a given architecture. */ | |
190 | ||
191 | struct packet_reg | |
192 | { | |
193 | long offset; /* Offset into G packet. */ | |
194 | long regnum; /* GDB's internal register number. */ | |
195 | LONGEST pnum; /* Remote protocol register number. */ | |
196 | int in_g_packet; /* Always part of G packet. */ | |
197 | /* long size in bytes; == register_size (target_gdbarch (), regnum); | |
198 | at present. */ | |
199 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); | |
200 | at present. */ | |
201 | }; | |
202 | ||
203 | struct remote_arch_state | |
204 | { | |
205 | explicit remote_arch_state (struct gdbarch *gdbarch); | |
206 | ||
207 | /* Description of the remote protocol registers. */ | |
208 | long sizeof_g_packet; | |
209 | ||
210 | /* Description of the remote protocol registers indexed by REGNUM | |
211 | (making an array gdbarch_num_regs in size). */ | |
212 | std::unique_ptr<packet_reg[]> regs; | |
213 | ||
214 | /* This is the size (in chars) of the first response to the ``g'' | |
215 | packet. It is used as a heuristic when determining the maximum | |
216 | size of memory-read and memory-write packets. A target will | |
217 | typically only reserve a buffer large enough to hold the ``g'' | |
218 | packet. The size does not include packet overhead (headers and | |
219 | trailers). */ | |
220 | long actual_register_packet_size; | |
221 | ||
222 | /* This is the maximum size (in chars) of a non read/write packet. | |
223 | It is also used as a cap on the size of read/write packets. */ | |
224 | long remote_packet_size; | |
225 | }; | |
226 | ||
227 | /* Description of the remote protocol state for the currently | |
228 | connected target. This is per-target state, and independent of the | |
229 | selected architecture. */ | |
230 | ||
231 | class remote_state | |
232 | { | |
233 | public: | |
234 | ||
235 | remote_state (); | |
236 | ~remote_state (); | |
237 | ||
238 | /* Get the remote arch state for GDBARCH. */ | |
239 | struct remote_arch_state *get_remote_arch_state (struct gdbarch *gdbarch); | |
240 | ||
241 | public: /* data */ | |
242 | ||
243 | /* A buffer to use for incoming packets, and its current size. The | |
244 | buffer is grown dynamically for larger incoming packets. | |
245 | Outgoing packets may also be constructed in this buffer. | |
8d64371b | 246 | The size of the buffer is always at least REMOTE_PACKET_SIZE; |
3c69da40 PA |
247 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing |
248 | packets. */ | |
8d64371b | 249 | gdb::char_vector buf; |
3c69da40 PA |
250 | |
251 | /* True if we're going through initial connection setup (finding out | |
252 | about the remote side's threads, relocating symbols, etc.). */ | |
253 | bool starting_up = false; | |
254 | ||
255 | /* If we negotiated packet size explicitly (and thus can bypass | |
256 | heuristics for the largest packet size that will not overflow | |
257 | a buffer in the stub), this will be set to that packet size. | |
258 | Otherwise zero, meaning to use the guessed size. */ | |
259 | long explicit_packet_size = 0; | |
260 | ||
261 | /* remote_wait is normally called when the target is running and | |
262 | waits for a stop reply packet. But sometimes we need to call it | |
263 | when the target is already stopped. We can send a "?" packet | |
264 | and have remote_wait read the response. Or, if we already have | |
265 | the response, we can stash it in BUF and tell remote_wait to | |
266 | skip calling getpkt. This flag is set when BUF contains a | |
267 | stop reply packet and the target is not waiting. */ | |
268 | int cached_wait_status = 0; | |
269 | ||
270 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
271 | expect acks from each other. The connection is assumed to be | |
272 | reliable. */ | |
273 | bool noack_mode = false; | |
274 | ||
275 | /* True if we're connected in extended remote mode. */ | |
276 | bool extended = false; | |
277 | ||
278 | /* True if we resumed the target and we're waiting for the target to | |
279 | stop. In the mean time, we can't start another command/query. | |
280 | The remote server wouldn't be ready to process it, so we'd | |
281 | timeout waiting for a reply that would never come and eventually | |
282 | we'd close the connection. This can happen in asynchronous mode | |
283 | because we allow GDB commands while the target is running. */ | |
284 | bool waiting_for_stop_reply = false; | |
285 | ||
286 | /* The status of the stub support for the various vCont actions. */ | |
287 | vCont_action_support supports_vCont; | |
5b6d1e4f PA |
288 | /* Whether vCont support was probed already. This is a workaround |
289 | until packet_support is per-connection. */ | |
290 | bool supports_vCont_probed; | |
3c69da40 PA |
291 | |
292 | /* True if the user has pressed Ctrl-C, but the target hasn't | |
293 | responded to that. */ | |
294 | bool ctrlc_pending_p = false; | |
295 | ||
296 | /* True if we saw a Ctrl-C while reading or writing from/to the | |
297 | remote descriptor. At that point it is not safe to send a remote | |
298 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
299 | process it once we're done with sending/receiving the current | |
300 | packet, which should be shortly. If however that takes too long, | |
301 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
302 | bool got_ctrlc_during_io = false; | |
303 | ||
304 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
305 | remote_open knows that we don't have a file open when the program | |
306 | starts. */ | |
307 | struct serial *remote_desc = nullptr; | |
308 | ||
309 | /* These are the threads which we last sent to the remote system. The | |
310 | TID member will be -1 for all or -2 for not sent yet. */ | |
311 | ptid_t general_thread = null_ptid; | |
312 | ptid_t continue_thread = null_ptid; | |
313 | ||
314 | /* This is the traceframe which we last selected on the remote system. | |
315 | It will be -1 if no traceframe is selected. */ | |
316 | int remote_traceframe_number = -1; | |
317 | ||
318 | char *last_pass_packet = nullptr; | |
319 | ||
320 | /* The last QProgramSignals packet sent to the target. We bypass | |
321 | sending a new program signals list down to the target if the new | |
322 | packet is exactly the same as the last we sent. IOW, we only let | |
323 | the target know about program signals list changes. */ | |
324 | char *last_program_signals_packet = nullptr; | |
325 | ||
326 | gdb_signal last_sent_signal = GDB_SIGNAL_0; | |
327 | ||
328 | bool last_sent_step = false; | |
329 | ||
330 | /* The execution direction of the last resume we got. */ | |
331 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; | |
332 | ||
333 | char *finished_object = nullptr; | |
334 | char *finished_annex = nullptr; | |
335 | ULONGEST finished_offset = 0; | |
336 | ||
337 | /* Should we try the 'ThreadInfo' query packet? | |
338 | ||
339 | This variable (NOT available to the user: auto-detect only!) | |
340 | determines whether GDB will use the new, simpler "ThreadInfo" | |
341 | query or the older, more complex syntax for thread queries. | |
342 | This is an auto-detect variable (set to true at each connect, | |
343 | and set to false when the target fails to recognize it). */ | |
344 | bool use_threadinfo_query = false; | |
345 | bool use_threadextra_query = false; | |
346 | ||
347 | threadref echo_nextthread {}; | |
348 | threadref nextthread {}; | |
349 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
350 | ||
351 | /* The state of remote notification. */ | |
352 | struct remote_notif_state *notif_state = nullptr; | |
353 | ||
354 | /* The branch trace configuration. */ | |
355 | struct btrace_config btrace_config {}; | |
356 | ||
357 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
358 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
359 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
360 | has yet been sent. */ | |
361 | int fs_pid = -1; | |
362 | ||
363 | /* A readahead cache for vFile:pread. Often, reading a binary | |
364 | involves a sequence of small reads. E.g., when parsing an ELF | |
365 | file. A readahead cache helps mostly the case of remote | |
366 | debugging on a connection with higher latency, due to the | |
367 | request/reply nature of the RSP. We only cache data for a single | |
368 | file descriptor at a time. */ | |
369 | struct readahead_cache readahead_cache; | |
370 | ||
371 | /* The list of already fetched and acknowledged stop events. This | |
372 | queue is used for notification Stop, and other notifications | |
373 | don't need queue for their events, because the notification | |
374 | events of Stop can't be consumed immediately, so that events | |
375 | should be queued first, and be consumed by remote_wait_{ns,as} | |
376 | one per time. Other notifications can consume their events | |
377 | immediately, so queue is not needed for them. */ | |
953edf2b | 378 | std::vector<stop_reply_up> stop_reply_queue; |
3c69da40 PA |
379 | |
380 | /* Asynchronous signal handle registered as event loop source for | |
381 | when we have pending events ready to be passed to the core. */ | |
382 | struct async_event_handler *remote_async_inferior_event_token = nullptr; | |
383 | ||
384 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with | |
385 | ``forever'' still use the normal timeout mechanism. This is | |
386 | currently used by the ASYNC code to guarentee that target reads | |
387 | during the initial connect always time-out. Once getpkt has been | |
388 | modified to return a timeout indication and, in turn | |
389 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
390 | this can go away. */ | |
391 | int wait_forever_enabled_p = 1; | |
392 | ||
393 | private: | |
394 | /* Mapping of remote protocol data for each gdbarch. Usually there | |
395 | is only one entry here, though we may see more with stubs that | |
396 | support multi-process. */ | |
397 | std::unordered_map<struct gdbarch *, remote_arch_state> | |
398 | m_arch_states; | |
399 | }; | |
6b8edb51 | 400 | |
d9f719f1 PA |
401 | static const target_info remote_target_info = { |
402 | "remote", | |
403 | N_("Remote serial target in gdb-specific protocol"), | |
404 | remote_doc | |
405 | }; | |
406 | ||
3b3dac9b | 407 | class remote_target : public process_stratum_target |
f6ac5f3d PA |
408 | { |
409 | public: | |
3b3dac9b | 410 | remote_target () = default; |
6b8edb51 | 411 | ~remote_target () override; |
f6ac5f3d | 412 | |
d9f719f1 PA |
413 | const target_info &info () const override |
414 | { return remote_target_info; } | |
f6ac5f3d | 415 | |
121b3efd PA |
416 | const char *connection_string () override; |
417 | ||
f6ac5f3d PA |
418 | thread_control_capabilities get_thread_control_capabilities () override |
419 | { return tc_schedlock; } | |
420 | ||
d9f719f1 PA |
421 | /* Open a remote connection. */ |
422 | static void open (const char *, int); | |
423 | ||
f6ac5f3d PA |
424 | void close () override; |
425 | ||
426 | void detach (inferior *, int) override; | |
427 | void disconnect (const char *, int) override; | |
428 | ||
1192f124 | 429 | void commit_resumed () override; |
f6ac5f3d | 430 | void resume (ptid_t, int, enum gdb_signal) override; |
b60cea74 | 431 | ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override; |
b4b1a226 | 432 | bool has_pending_events () override; |
f6ac5f3d PA |
433 | |
434 | void fetch_registers (struct regcache *, int) override; | |
435 | void store_registers (struct regcache *, int) override; | |
436 | void prepare_to_store (struct regcache *) override; | |
437 | ||
438 | void files_info () override; | |
439 | ||
440 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
441 | ||
442 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
443 | enum remove_bp_reason) override; | |
444 | ||
445 | ||
57810aa7 PA |
446 | bool stopped_by_sw_breakpoint () override; |
447 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 448 | |
57810aa7 | 449 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 450 | |
57810aa7 | 451 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 452 | |
57810aa7 | 453 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 454 | |
57810aa7 | 455 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 456 | |
57810aa7 | 457 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
458 | |
459 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
460 | ||
461 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
462 | ||
463 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
464 | ||
465 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
466 | ||
467 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
468 | struct expression *) override; | |
469 | ||
470 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
471 | struct expression *) override; | |
472 | ||
473 | void kill () override; | |
474 | ||
475 | void load (const char *, int) override; | |
476 | ||
477 | void mourn_inferior () override; | |
478 | ||
adc6a863 | 479 | void pass_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d PA |
480 | |
481 | int set_syscall_catchpoint (int, bool, int, | |
482 | gdb::array_view<const int>) override; | |
483 | ||
adc6a863 | 484 | void program_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d | 485 | |
57810aa7 | 486 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
487 | |
488 | const char *thread_name (struct thread_info *) override; | |
489 | ||
490 | void update_thread_list () override; | |
491 | ||
a068643d | 492 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
493 | |
494 | const char *extra_thread_info (struct thread_info *) override; | |
495 | ||
496 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
497 | ||
498 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
499 | int handle_len, | |
500 | inferior *inf) override; | |
501 | ||
3d6c6204 KB |
502 | gdb::byte_vector thread_info_to_thread_handle (struct thread_info *tp) |
503 | override; | |
504 | ||
f6ac5f3d PA |
505 | void stop (ptid_t) override; |
506 | ||
507 | void interrupt () override; | |
508 | ||
509 | void pass_ctrlc () override; | |
510 | ||
511 | enum target_xfer_status xfer_partial (enum target_object object, | |
512 | const char *annex, | |
513 | gdb_byte *readbuf, | |
514 | const gdb_byte *writebuf, | |
515 | ULONGEST offset, ULONGEST len, | |
516 | ULONGEST *xfered_len) override; | |
517 | ||
518 | ULONGEST get_memory_xfer_limit () override; | |
519 | ||
520 | void rcmd (const char *command, struct ui_file *output) override; | |
521 | ||
522 | char *pid_to_exec_file (int pid) override; | |
523 | ||
524 | void log_command (const char *cmd) override | |
525 | { | |
526 | serial_log_command (this, cmd); | |
527 | } | |
528 | ||
529 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
530 | CORE_ADDR load_module_addr, | |
531 | CORE_ADDR offset) override; | |
532 | ||
57810aa7 | 533 | bool can_execute_reverse () override; |
f6ac5f3d PA |
534 | |
535 | std::vector<mem_region> memory_map () override; | |
536 | ||
537 | void flash_erase (ULONGEST address, LONGEST length) override; | |
538 | ||
539 | void flash_done () override; | |
540 | ||
541 | const struct target_desc *read_description () override; | |
542 | ||
543 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
544 | const gdb_byte *pattern, ULONGEST pattern_len, | |
545 | CORE_ADDR *found_addrp) override; | |
546 | ||
57810aa7 | 547 | bool can_async_p () override; |
f6ac5f3d | 548 | |
57810aa7 | 549 | bool is_async_p () override; |
f6ac5f3d PA |
550 | |
551 | void async (int) override; | |
552 | ||
5b6d1e4f PA |
553 | int async_wait_fd () override; |
554 | ||
f6ac5f3d PA |
555 | void thread_events (int) override; |
556 | ||
557 | int can_do_single_step () override; | |
558 | ||
559 | void terminal_inferior () override; | |
560 | ||
561 | void terminal_ours () override; | |
562 | ||
57810aa7 | 563 | bool supports_non_stop () override; |
f6ac5f3d | 564 | |
57810aa7 | 565 | bool supports_multi_process () override; |
f6ac5f3d | 566 | |
57810aa7 | 567 | bool supports_disable_randomization () override; |
f6ac5f3d | 568 | |
57810aa7 | 569 | bool filesystem_is_local () override; |
f6ac5f3d PA |
570 | |
571 | ||
572 | int fileio_open (struct inferior *inf, const char *filename, | |
573 | int flags, int mode, int warn_if_slow, | |
574 | int *target_errno) override; | |
575 | ||
576 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
577 | ULONGEST offset, int *target_errno) override; | |
578 | ||
579 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
580 | ULONGEST offset, int *target_errno) override; | |
581 | ||
582 | int fileio_fstat (int fd, struct stat *sb, int *target_errno) override; | |
583 | ||
584 | int fileio_close (int fd, int *target_errno) override; | |
585 | ||
586 | int fileio_unlink (struct inferior *inf, | |
587 | const char *filename, | |
588 | int *target_errno) override; | |
589 | ||
590 | gdb::optional<std::string> | |
591 | fileio_readlink (struct inferior *inf, | |
592 | const char *filename, | |
593 | int *target_errno) override; | |
594 | ||
57810aa7 | 595 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 596 | |
57810aa7 | 597 | bool supports_string_tracing () override; |
f6ac5f3d | 598 | |
57810aa7 | 599 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 600 | |
57810aa7 | 601 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
602 | |
603 | void trace_init () override; | |
604 | ||
605 | void download_tracepoint (struct bp_location *location) override; | |
606 | ||
57810aa7 | 607 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
608 | |
609 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
610 | ||
611 | void enable_tracepoint (struct bp_location *location) override; | |
612 | ||
613 | void disable_tracepoint (struct bp_location *location) override; | |
614 | ||
615 | void trace_set_readonly_regions () override; | |
616 | ||
617 | void trace_start () override; | |
618 | ||
619 | int get_trace_status (struct trace_status *ts) override; | |
620 | ||
621 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
622 | override; | |
623 | ||
624 | void trace_stop () override; | |
625 | ||
626 | int trace_find (enum trace_find_type type, int num, | |
627 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
628 | ||
57810aa7 | 629 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
630 | |
631 | int save_trace_data (const char *filename) override; | |
632 | ||
633 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
634 | ||
635 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
636 | ||
637 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
638 | ||
639 | int get_min_fast_tracepoint_insn_len () override; | |
640 | ||
641 | void set_disconnected_tracing (int val) override; | |
642 | ||
643 | void set_circular_trace_buffer (int val) override; | |
644 | ||
645 | void set_trace_buffer_size (LONGEST val) override; | |
646 | ||
57810aa7 PA |
647 | bool set_trace_notes (const char *user, const char *notes, |
648 | const char *stopnotes) override; | |
f6ac5f3d PA |
649 | |
650 | int core_of_thread (ptid_t ptid) override; | |
651 | ||
652 | int verify_memory (const gdb_byte *data, | |
653 | CORE_ADDR memaddr, ULONGEST size) override; | |
654 | ||
655 | ||
57810aa7 | 656 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
657 | |
658 | void set_permissions () override; | |
659 | ||
660 | bool static_tracepoint_marker_at (CORE_ADDR, | |
661 | struct static_tracepoint_marker *marker) | |
662 | override; | |
663 | ||
664 | std::vector<static_tracepoint_marker> | |
665 | static_tracepoint_markers_by_strid (const char *id) override; | |
666 | ||
667 | traceframe_info_up traceframe_info () override; | |
668 | ||
57810aa7 PA |
669 | bool use_agent (bool use) override; |
670 | bool can_use_agent () override; | |
f6ac5f3d PA |
671 | |
672 | struct btrace_target_info *enable_btrace (ptid_t ptid, | |
673 | const struct btrace_config *conf) override; | |
674 | ||
675 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
676 | ||
677 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
678 | ||
679 | enum btrace_error read_btrace (struct btrace_data *data, | |
680 | struct btrace_target_info *btinfo, | |
681 | enum btrace_read_type type) override; | |
682 | ||
683 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 684 | bool augmented_libraries_svr4_read () override; |
e97007b6 | 685 | void follow_fork (bool, bool) override; |
294c36eb | 686 | void follow_exec (inferior *, ptid_t, const char *) override; |
f6ac5f3d PA |
687 | int insert_fork_catchpoint (int) override; |
688 | int remove_fork_catchpoint (int) override; | |
689 | int insert_vfork_catchpoint (int) override; | |
690 | int remove_vfork_catchpoint (int) override; | |
691 | int insert_exec_catchpoint (int) override; | |
692 | int remove_exec_catchpoint (int) override; | |
693 | enum exec_direction_kind execution_direction () override; | |
694 | ||
dbe692af LM |
695 | bool supports_memory_tagging () override; |
696 | ||
697 | bool fetch_memtags (CORE_ADDR address, size_t len, | |
698 | gdb::byte_vector &tags, int type) override; | |
699 | ||
700 | bool store_memtags (CORE_ADDR address, size_t len, | |
701 | const gdb::byte_vector &tags, int type) override; | |
702 | ||
6b8edb51 PA |
703 | public: /* Remote specific methods. */ |
704 | ||
705 | void remote_download_command_source (int num, ULONGEST addr, | |
706 | struct command_line *cmds); | |
707 | ||
708 | void remote_file_put (const char *local_file, const char *remote_file, | |
709 | int from_tty); | |
710 | void remote_file_get (const char *remote_file, const char *local_file, | |
711 | int from_tty); | |
712 | void remote_file_delete (const char *remote_file, int from_tty); | |
713 | ||
714 | int remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
715 | ULONGEST offset, int *remote_errno); | |
716 | int remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
717 | ULONGEST offset, int *remote_errno); | |
718 | int remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
719 | ULONGEST offset, int *remote_errno); | |
720 | ||
721 | int remote_hostio_send_command (int command_bytes, int which_packet, | |
aa2838cc | 722 | int *remote_errno, const char **attachment, |
6b8edb51 PA |
723 | int *attachment_len); |
724 | int remote_hostio_set_filesystem (struct inferior *inf, | |
725 | int *remote_errno); | |
726 | /* We should get rid of this and use fileio_open directly. */ | |
727 | int remote_hostio_open (struct inferior *inf, const char *filename, | |
728 | int flags, int mode, int warn_if_slow, | |
729 | int *remote_errno); | |
730 | int remote_hostio_close (int fd, int *remote_errno); | |
731 | ||
732 | int remote_hostio_unlink (inferior *inf, const char *filename, | |
733 | int *remote_errno); | |
734 | ||
735 | struct remote_state *get_remote_state (); | |
736 | ||
737 | long get_remote_packet_size (void); | |
738 | long get_memory_packet_size (struct memory_packet_config *config); | |
739 | ||
740 | long get_memory_write_packet_size (); | |
741 | long get_memory_read_packet_size (); | |
742 | ||
743 | char *append_pending_thread_resumptions (char *p, char *endp, | |
744 | ptid_t ptid); | |
d9f719f1 | 745 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d | 746 | void start_remote (int from_tty, int extended_p); |
00431a78 | 747 | void remote_detach_1 (struct inferior *inf, int from_tty); |
6b8edb51 PA |
748 | |
749 | char *append_resumption (char *p, char *endp, | |
750 | ptid_t ptid, int step, gdb_signal siggnal); | |
751 | int remote_resume_with_vcont (ptid_t ptid, int step, | |
752 | gdb_signal siggnal); | |
753 | ||
64d38fdd | 754 | thread_info *add_current_inferior_and_thread (const char *wait_status); |
6b8edb51 PA |
755 | |
756 | ptid_t wait_ns (ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 757 | target_wait_flags options); |
6b8edb51 | 758 | ptid_t wait_as (ptid_t ptid, target_waitstatus *status, |
b60cea74 | 759 | target_wait_flags options); |
6b8edb51 PA |
760 | |
761 | ptid_t process_stop_reply (struct stop_reply *stop_reply, | |
762 | target_waitstatus *status); | |
763 | ||
8f66807b AB |
764 | ptid_t select_thread_for_ambiguous_stop_reply |
765 | (const struct target_waitstatus *status); | |
766 | ||
8a82de58 | 767 | void remote_notice_new_inferior (ptid_t currthread, bool executing); |
6b8edb51 PA |
768 | |
769 | void process_initial_stop_replies (int from_tty); | |
770 | ||
6eccc2c8 AB |
771 | thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing, |
772 | bool silent_p); | |
6b8edb51 PA |
773 | |
774 | void btrace_sync_conf (const btrace_config *conf); | |
775 | ||
776 | void remote_btrace_maybe_reopen (); | |
777 | ||
778 | void remove_new_fork_children (threads_listing_context *context); | |
779 | void kill_new_fork_children (int pid); | |
780 | void discard_pending_stop_replies (struct inferior *inf); | |
781 | int stop_reply_queue_length (); | |
782 | ||
783 | void check_pending_events_prevent_wildcard_vcont | |
2f63ec5c | 784 | (bool *may_global_wildcard_vcont); |
6b8edb51 PA |
785 | |
786 | void discard_pending_stop_replies_in_queue (); | |
787 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
788 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
789 | int peek_stop_reply (ptid_t ptid); | |
bb277751 | 790 | void remote_parse_stop_reply (const char *buf, stop_reply *event); |
6b8edb51 PA |
791 | |
792 | void remote_stop_ns (ptid_t ptid); | |
793 | void remote_interrupt_as (); | |
794 | void remote_interrupt_ns (); | |
795 | ||
796 | char *remote_get_noisy_reply (); | |
797 | int remote_query_attached (int pid); | |
9ab8741a | 798 | inferior *remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 PA |
799 | int try_open_exec); |
800 | ||
801 | ptid_t remote_current_thread (ptid_t oldpid); | |
e3b2741b | 802 | ptid_t get_current_thread (const char *wait_status); |
6b8edb51 PA |
803 | |
804 | void set_thread (ptid_t ptid, int gen); | |
805 | void set_general_thread (ptid_t ptid); | |
806 | void set_continue_thread (ptid_t ptid); | |
807 | void set_general_process (); | |
808 | ||
809 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
810 | ||
cecb1912 | 811 | int remote_unpack_thread_info_response (const char *pkt, threadref *expectedref, |
6b8edb51 PA |
812 | gdb_ext_thread_info *info); |
813 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
814 | gdb_ext_thread_info *info); | |
815 | ||
cecb1912 | 816 | int parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
817 | threadref *original_echo, |
818 | threadref *resultlist, | |
819 | int *doneflag); | |
820 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
821 | int result_limit, int *done, int *result_count, | |
822 | threadref *threadlist); | |
823 | ||
824 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
825 | void *context, int looplimit); | |
826 | ||
827 | int remote_get_threads_with_ql (threads_listing_context *context); | |
828 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
829 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
830 | ||
831 | void extended_remote_restart (); | |
832 | ||
833 | void get_offsets (); | |
834 | ||
835 | void remote_check_symbols (); | |
836 | ||
837 | void remote_supported_packet (const struct protocol_feature *feature, | |
838 | enum packet_support support, | |
839 | const char *argument); | |
840 | ||
841 | void remote_query_supported (); | |
842 | ||
843 | void remote_packet_size (const protocol_feature *feature, | |
844 | packet_support support, const char *value); | |
845 | ||
846 | void remote_serial_quit_handler (); | |
847 | ||
848 | void remote_detach_pid (int pid); | |
849 | ||
850 | void remote_vcont_probe (); | |
851 | ||
852 | void remote_resume_with_hc (ptid_t ptid, int step, | |
853 | gdb_signal siggnal); | |
854 | ||
855 | void send_interrupt_sequence (); | |
856 | void interrupt_query (); | |
857 | ||
858 | void remote_notif_get_pending_events (notif_client *nc); | |
859 | ||
860 | int fetch_register_using_p (struct regcache *regcache, | |
861 | packet_reg *reg); | |
862 | int send_g_packet (); | |
863 | void process_g_packet (struct regcache *regcache); | |
864 | void fetch_registers_using_g (struct regcache *regcache); | |
865 | int store_register_using_P (const struct regcache *regcache, | |
866 | packet_reg *reg); | |
867 | void store_registers_using_G (const struct regcache *regcache); | |
868 | ||
869 | void set_remote_traceframe (); | |
870 | ||
871 | void check_binary_download (CORE_ADDR addr); | |
872 | ||
873 | target_xfer_status remote_write_bytes_aux (const char *header, | |
874 | CORE_ADDR memaddr, | |
875 | const gdb_byte *myaddr, | |
876 | ULONGEST len_units, | |
877 | int unit_size, | |
878 | ULONGEST *xfered_len_units, | |
879 | char packet_format, | |
880 | int use_length); | |
881 | ||
882 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
883 | const gdb_byte *myaddr, ULONGEST len, | |
884 | int unit_size, ULONGEST *xfered_len); | |
885 | ||
886 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
887 | ULONGEST len_units, | |
888 | int unit_size, ULONGEST *xfered_len_units); | |
889 | ||
890 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
891 | ULONGEST memaddr, | |
892 | ULONGEST len, | |
893 | int unit_size, | |
894 | ULONGEST *xfered_len); | |
895 | ||
896 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
897 | gdb_byte *myaddr, ULONGEST len, | |
898 | int unit_size, | |
899 | ULONGEST *xfered_len); | |
900 | ||
901 | packet_result remote_send_printf (const char *format, ...) | |
902 | ATTRIBUTE_PRINTF (2, 3); | |
903 | ||
904 | target_xfer_status remote_flash_write (ULONGEST address, | |
905 | ULONGEST length, ULONGEST *xfered_len, | |
906 | const gdb_byte *data); | |
907 | ||
908 | int readchar (int timeout); | |
909 | ||
910 | void remote_serial_write (const char *str, int len); | |
911 | ||
912 | int putpkt (const char *buf); | |
913 | int putpkt_binary (const char *buf, int cnt); | |
914 | ||
8d64371b TT |
915 | int putpkt (const gdb::char_vector &buf) |
916 | { | |
917 | return putpkt (buf.data ()); | |
918 | } | |
919 | ||
6b8edb51 | 920 | void skip_frame (); |
8d64371b TT |
921 | long read_frame (gdb::char_vector *buf_p); |
922 | void getpkt (gdb::char_vector *buf, int forever); | |
923 | int getpkt_or_notif_sane_1 (gdb::char_vector *buf, int forever, | |
6b8edb51 | 924 | int expecting_notif, int *is_notif); |
8d64371b TT |
925 | int getpkt_sane (gdb::char_vector *buf, int forever); |
926 | int getpkt_or_notif_sane (gdb::char_vector *buf, int forever, | |
6b8edb51 PA |
927 | int *is_notif); |
928 | int remote_vkill (int pid); | |
929 | void remote_kill_k (); | |
930 | ||
931 | void extended_remote_disable_randomization (int val); | |
932 | int extended_remote_run (const std::string &args); | |
933 | ||
934 | void send_environment_packet (const char *action, | |
935 | const char *packet, | |
936 | const char *value); | |
937 | ||
938 | void extended_remote_environment_support (); | |
3c69da40 | 939 | void extended_remote_set_inferior_cwd (); |
80152258 | 940 | |
3c69da40 PA |
941 | target_xfer_status remote_write_qxfer (const char *object_name, |
942 | const char *annex, | |
943 | const gdb_byte *writebuf, | |
944 | ULONGEST offset, LONGEST len, | |
945 | ULONGEST *xfered_len, | |
946 | struct packet_config *packet); | |
43c3a0e4 | 947 | |
3c69da40 PA |
948 | target_xfer_status remote_read_qxfer (const char *object_name, |
949 | const char *annex, | |
950 | gdb_byte *readbuf, ULONGEST offset, | |
951 | LONGEST len, | |
952 | ULONGEST *xfered_len, | |
953 | struct packet_config *packet); | |
43c3a0e4 | 954 | |
3c69da40 | 955 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 956 | |
3c69da40 | 957 | bool vcont_r_supported (); |
43c3a0e4 | 958 | |
3c69da40 | 959 | void packet_command (const char *args, int from_tty); |
43c3a0e4 | 960 | |
3c69da40 | 961 | private: /* data fields */ |
43c3a0e4 | 962 | |
3c69da40 PA |
963 | /* The remote state. Don't reference this directly. Use the |
964 | get_remote_state method instead. */ | |
965 | remote_state m_remote_state; | |
43c3a0e4 PA |
966 | }; |
967 | ||
3c69da40 PA |
968 | static const target_info extended_remote_target_info = { |
969 | "extended-remote", | |
970 | N_("Extended remote serial target in gdb-specific protocol"), | |
971 | remote_doc | |
972 | }; | |
ea9c271d | 973 | |
3c69da40 PA |
974 | /* Set up the extended remote target by extending the standard remote |
975 | target and adding to it. */ | |
976 | ||
977 | class extended_remote_target final : public remote_target | |
ea9c271d | 978 | { |
9d6eea31 | 979 | public: |
3c69da40 PA |
980 | const target_info &info () const override |
981 | { return extended_remote_target_info; } | |
9d6eea31 | 982 | |
3c69da40 PA |
983 | /* Open an extended-remote connection. */ |
984 | static void open (const char *, int); | |
de44f5a7 | 985 | |
3c69da40 PA |
986 | bool can_create_inferior () override { return true; } |
987 | void create_inferior (const char *, const std::string &, | |
988 | char **, int) override; | |
9d6eea31 | 989 | |
3c69da40 | 990 | void detach (inferior *, int) override; |
9d6eea31 | 991 | |
3c69da40 PA |
992 | bool can_attach () override { return true; } |
993 | void attach (const char *, int) override; | |
be2a5f71 | 994 | |
3c69da40 PA |
995 | void post_attach (int) override; |
996 | bool supports_disable_randomization () override; | |
997 | }; | |
1e51243a | 998 | |
3c69da40 | 999 | /* Per-program-space data key. */ |
7b4a314f TT |
1000 | static const struct program_space_key<char, gdb::xfree_deleter<char>> |
1001 | remote_pspace_data; | |
2d717e4f | 1002 | |
3c69da40 PA |
1003 | /* The variable registered as the control variable used by the |
1004 | remote exec-file commands. While the remote exec-file setting is | |
1005 | per-program-space, the set/show machinery uses this as the | |
1006 | location of the remote exec-file value. */ | |
1007 | static char *remote_exec_file_var; | |
a6f3e723 | 1008 | |
3c69da40 PA |
1009 | /* The size to align memory write packets, when practical. The protocol |
1010 | does not guarantee any alignment, and gdb will generate short | |
1011 | writes and unaligned writes, but even as a best-effort attempt this | |
1012 | can improve bulk transfers. For instance, if a write is misaligned | |
1013 | relative to the target's data bus, the stub may need to make an extra | |
1014 | round trip fetching data from the target. This doesn't make a | |
1015 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 1016 | |
3c69da40 PA |
1017 | The alignment chosen is arbitrary; usually data bus width is |
1018 | important here, not the possibly larger cache line size. */ | |
1019 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 1020 | |
3c69da40 | 1021 | /* Prototypes for local functions. */ |
74531fed | 1022 | |
3c69da40 | 1023 | static int hexnumlen (ULONGEST num); |
782b2b07 | 1024 | |
3c69da40 | 1025 | static int stubhex (int ch); |
5d93a237 | 1026 | |
3c69da40 | 1027 | static int hexnumstr (char *, ULONGEST); |
048094ac | 1028 | |
3c69da40 | 1029 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 1030 | |
3c69da40 | 1031 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1032 | |
3c69da40 | 1033 | static void print_packet (const char *); |
747dc59d | 1034 | |
cecb1912 | 1035 | static int stub_unpack_int (const char *buff, int fieldlength); |
5e4a05c4 | 1036 | |
3c69da40 | 1037 | struct packet_config; |
b73be471 | 1038 | |
3c69da40 | 1039 | static void show_packet_config_cmd (struct packet_config *config); |
280ceea3 | 1040 | |
3c69da40 PA |
1041 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1042 | int from_tty, | |
1043 | struct cmd_list_element *c, | |
1044 | const char *value); | |
8e88304f | 1045 | |
3c69da40 | 1046 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1047 | |
3c69da40 | 1048 | static void remote_async_inferior_event_handler (gdb_client_data); |
b80fafe3 | 1049 | |
eefce37f | 1050 | static bool remote_read_description_p (struct target_ops *target); |
88b496c3 | 1051 | |
05be00a8 | 1052 | static void remote_console_output (const char *msg); |
5965e028 | 1053 | |
3c69da40 | 1054 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1055 | |
5b6d1e4f | 1056 | static void remote_unpush_and_throw (remote_target *target); |
15a201c8 | 1057 | |
3c69da40 | 1058 | /* For "remote". */ |
80152258 | 1059 | |
3c69da40 | 1060 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1061 | |
3c69da40 | 1062 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1063 | |
3c69da40 PA |
1064 | static struct cmd_list_element *remote_set_cmdlist; |
1065 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1066 | |
3c69da40 | 1067 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1068 | |
491144b5 | 1069 | static bool use_range_stepping = true; |
3c69da40 | 1070 | |
c9d22089 SM |
1071 | /* From the remote target's point of view, each thread is in one of these three |
1072 | states. */ | |
1073 | enum class resume_state | |
1074 | { | |
1075 | /* Not resumed - we haven't been asked to resume this thread. */ | |
1076 | NOT_RESUMED, | |
1077 | ||
1078 | /* We have been asked to resume this thread, but haven't sent a vCont action | |
1079 | for it yet. We'll need to consider it next time commit_resume is | |
1080 | called. */ | |
1081 | RESUMED_PENDING_VCONT, | |
1082 | ||
1083 | /* We have been asked to resume this thread, and we have sent a vCont action | |
1084 | for it. */ | |
1085 | RESUMED, | |
1086 | }; | |
1087 | ||
1088 | /* Information about a thread's pending vCont-resume. Used when a thread is in | |
1089 | the remote_resume_state::RESUMED_PENDING_VCONT state. remote_target::resume | |
1090 | stores this information which is then picked up by | |
1091 | remote_target::commit_resume to know which is the proper action for this | |
1092 | thread to include in the vCont packet. */ | |
1093 | struct resumed_pending_vcont_info | |
1094 | { | |
1095 | /* True if the last resume call for this thread was a step request, false | |
1096 | if a continue request. */ | |
1097 | bool step; | |
1098 | ||
1099 | /* The signal specified in the last resume call for this thread. */ | |
1100 | gdb_signal sig; | |
1101 | }; | |
1102 | ||
7aabaf9d SM |
1103 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1104 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1105 | { |
7aabaf9d SM |
1106 | std::string extra; |
1107 | std::string name; | |
1108 | int core = -1; | |
799a2abe | 1109 | |
f6327dcb KB |
1110 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1111 | sequence of bytes. */ | |
7aabaf9d | 1112 | gdb::byte_vector thread_handle; |
f6327dcb | 1113 | |
799a2abe | 1114 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1115 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1116 | |
1117 | /* This is set to the data address of the access causing the target | |
1118 | to stop for a watchpoint. */ | |
7aabaf9d | 1119 | CORE_ADDR watch_data_address = 0; |
85ad3aaf | 1120 | |
c9d22089 | 1121 | /* Get the thread's resume state. */ |
a6c11cbb | 1122 | enum resume_state get_resume_state () const |
c9d22089 SM |
1123 | { |
1124 | return m_resume_state; | |
1125 | } | |
1126 | ||
1127 | /* Put the thread in the NOT_RESUMED state. */ | |
1128 | void set_not_resumed () | |
1129 | { | |
1130 | m_resume_state = resume_state::NOT_RESUMED; | |
1131 | } | |
85ad3aaf | 1132 | |
c9d22089 SM |
1133 | /* Put the thread in the RESUMED_PENDING_VCONT state. */ |
1134 | void set_resumed_pending_vcont (bool step, gdb_signal sig) | |
1135 | { | |
1136 | m_resume_state = resume_state::RESUMED_PENDING_VCONT; | |
1137 | m_resumed_pending_vcont_info.step = step; | |
1138 | m_resumed_pending_vcont_info.sig = sig; | |
1139 | } | |
85ad3aaf | 1140 | |
c9d22089 | 1141 | /* Get the information this thread's pending vCont-resumption. |
85ad3aaf | 1142 | |
c9d22089 SM |
1143 | Must only be called if the thread is in the RESUMED_PENDING_VCONT resume |
1144 | state. */ | |
1145 | const struct resumed_pending_vcont_info &resumed_pending_vcont_info () const | |
1146 | { | |
1147 | gdb_assert (m_resume_state == resume_state::RESUMED_PENDING_VCONT); | |
1148 | ||
1149 | return m_resumed_pending_vcont_info; | |
1150 | } | |
1151 | ||
1152 | /* Put the thread in the VCONT_RESUMED state. */ | |
1153 | void set_resumed () | |
1154 | { | |
1155 | m_resume_state = resume_state::RESUMED; | |
1156 | } | |
1157 | ||
1158 | private: | |
1159 | /* Resume state for this thread. This is used to implement vCont action | |
1160 | coalescing (only when the target operates in non-stop mode). | |
1161 | ||
1162 | remote_target::resume moves the thread to the RESUMED_PENDING_VCONT state, | |
1163 | which notes that this thread must be considered in the next commit_resume | |
1164 | call. | |
1165 | ||
1166 | remote_target::commit_resume sends a vCont packet with actions for the | |
1167 | threads in the RESUMED_PENDING_VCONT state and moves them to the | |
1168 | VCONT_RESUMED state. | |
1169 | ||
1170 | When reporting a stop to the core for a thread, that thread is moved back | |
1171 | to the NOT_RESUMED state. */ | |
1172 | enum resume_state m_resume_state = resume_state::NOT_RESUMED; | |
1173 | ||
1174 | /* Extra info used if the thread is in the RESUMED_PENDING_VCONT state. */ | |
1175 | struct resumed_pending_vcont_info m_resumed_pending_vcont_info; | |
dc146f7c VP |
1176 | }; |
1177 | ||
de44f5a7 | 1178 | remote_state::remote_state () |
8d64371b | 1179 | : buf (400) |
de44f5a7 | 1180 | { |
de44f5a7 PA |
1181 | } |
1182 | ||
1183 | remote_state::~remote_state () | |
1184 | { | |
1185 | xfree (this->last_pass_packet); | |
1186 | xfree (this->last_program_signals_packet); | |
de44f5a7 PA |
1187 | xfree (this->finished_object); |
1188 | xfree (this->finished_annex); | |
cf792862 TT |
1189 | } |
1190 | ||
35b1e5cc SS |
1191 | /* Utility: generate error from an incoming stub packet. */ |
1192 | static void | |
1193 | trace_error (char *buf) | |
1194 | { | |
1195 | if (*buf++ != 'E') | |
1196 | return; /* not an error msg */ | |
1197 | switch (*buf) | |
1198 | { | |
1199 | case '1': /* malformed packet error */ | |
1200 | if (*++buf == '0') /* general case: */ | |
1201 | error (_("remote.c: error in outgoing packet.")); | |
1202 | else | |
1203 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1204 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1205 | default: |
1206 | error (_("Target returns error code '%s'."), buf); | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1211 | |
6b8edb51 PA |
1212 | char * |
1213 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1214 | { |
b6bb3468 PA |
1215 | struct remote_state *rs = get_remote_state (); |
1216 | ||
35b1e5cc SS |
1217 | do /* Loop on reply from remote stub. */ |
1218 | { | |
1219 | char *buf; | |
a744cf53 | 1220 | |
0df8b418 | 1221 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b TT |
1222 | getpkt (&rs->buf, 0); |
1223 | buf = rs->buf.data (); | |
ad91cd99 | 1224 | if (buf[0] == 'E') |
35b1e5cc | 1225 | trace_error (buf); |
61012eef | 1226 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1227 | { |
1228 | ULONGEST ul; | |
1229 | CORE_ADDR from, to, org_to; | |
256642e8 | 1230 | const char *p, *pp; |
dde08ee1 | 1231 | int adjusted_size = 0; |
7556d4a4 | 1232 | int relocated = 0; |
dde08ee1 PA |
1233 | |
1234 | p = buf + strlen ("qRelocInsn:"); | |
1235 | pp = unpack_varlen_hex (p, &ul); | |
1236 | if (*pp != ';') | |
cb91c06a | 1237 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1238 | from = ul; |
1239 | ||
1240 | p = pp + 1; | |
a9cbf802 | 1241 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1242 | to = ul; |
1243 | ||
1244 | org_to = to; | |
1245 | ||
a70b8144 | 1246 | try |
dde08ee1 | 1247 | { |
f5656ead | 1248 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 1249 | relocated = 1; |
dde08ee1 | 1250 | } |
230d2906 | 1251 | catch (const gdb_exception &ex) |
7556d4a4 PA |
1252 | { |
1253 | if (ex.error == MEMORY_ERROR) | |
1254 | { | |
1255 | /* Propagate memory errors silently back to the | |
1256 | target. The stub may have limited the range of | |
1257 | addresses we can write to, for example. */ | |
1258 | } | |
1259 | else | |
1260 | { | |
1261 | /* Something unexpectedly bad happened. Be verbose | |
1262 | so we can tell what, and propagate the error back | |
1263 | to the stub, so it doesn't get stuck waiting for | |
1264 | a response. */ | |
1265 | exception_fprintf (gdb_stderr, ex, | |
1266 | _("warning: relocating instruction: ")); | |
1267 | } | |
1268 | putpkt ("E01"); | |
1269 | } | |
1270 | ||
1271 | if (relocated) | |
dde08ee1 PA |
1272 | { |
1273 | adjusted_size = to - org_to; | |
1274 | ||
8d64371b | 1275 | xsnprintf (buf, rs->buf.size (), "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1276 | putpkt (buf); |
1277 | } | |
dde08ee1 | 1278 | } |
ad91cd99 | 1279 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1280 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1281 | else | |
0df8b418 | 1282 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1283 | } |
1284 | while (1); | |
1285 | } | |
3c3bea1c | 1286 | |
9d6eea31 PA |
1287 | struct remote_arch_state * |
1288 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1289 | { |
43c3a0e4 PA |
1290 | remote_arch_state *rsa; |
1291 | ||
1292 | auto it = this->m_arch_states.find (gdbarch); | |
1293 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1294 | { |
43c3a0e4 PA |
1295 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1296 | std::forward_as_tuple (gdbarch), | |
1297 | std::forward_as_tuple (gdbarch)); | |
1298 | rsa = &p.first->second; | |
9d6eea31 PA |
1299 | |
1300 | /* Make sure that the packet buffer is plenty big enough for | |
1301 | this architecture. */ | |
8d64371b TT |
1302 | if (this->buf.size () < rsa->remote_packet_size) |
1303 | this->buf.resize (2 * rsa->remote_packet_size); | |
9d6eea31 | 1304 | } |
43c3a0e4 PA |
1305 | else |
1306 | rsa = &it->second; | |
1307 | ||
1308 | return rsa; | |
d01949b6 AC |
1309 | } |
1310 | ||
0b83947e DJ |
1311 | /* Fetch the global remote target state. */ |
1312 | ||
6b8edb51 PA |
1313 | remote_state * |
1314 | remote_target::get_remote_state () | |
0b83947e DJ |
1315 | { |
1316 | /* Make sure that the remote architecture state has been | |
1317 | initialized, because doing so might reallocate rs->buf. Any | |
1318 | function which calls getpkt also needs to be mindful of changes | |
1319 | to rs->buf, but this call limits the number of places which run | |
1320 | into trouble. */ | |
3c69da40 | 1321 | m_remote_state.get_remote_arch_state (target_gdbarch ()); |
0b83947e | 1322 | |
3c69da40 | 1323 | return &m_remote_state; |
0b83947e DJ |
1324 | } |
1325 | ||
94585166 DB |
1326 | /* Fetch the remote exec-file from the current program space. */ |
1327 | ||
1328 | static const char * | |
1329 | get_remote_exec_file (void) | |
1330 | { | |
1331 | char *remote_exec_file; | |
1332 | ||
7b4a314f | 1333 | remote_exec_file = remote_pspace_data.get (current_program_space); |
94585166 DB |
1334 | if (remote_exec_file == NULL) |
1335 | return ""; | |
1336 | ||
1337 | return remote_exec_file; | |
1338 | } | |
1339 | ||
1340 | /* Set the remote exec file for PSPACE. */ | |
1341 | ||
1342 | static void | |
1343 | set_pspace_remote_exec_file (struct program_space *pspace, | |
7b4a314f | 1344 | const char *remote_exec_file) |
94585166 | 1345 | { |
7b4a314f | 1346 | char *old_file = remote_pspace_data.get (pspace); |
94585166 DB |
1347 | |
1348 | xfree (old_file); | |
7b4a314f | 1349 | remote_pspace_data.set (pspace, xstrdup (remote_exec_file)); |
94585166 DB |
1350 | } |
1351 | ||
1352 | /* The "set/show remote exec-file" set command hook. */ | |
1353 | ||
1354 | static void | |
eb4c3f4a | 1355 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1356 | struct cmd_list_element *c) |
1357 | { | |
1358 | gdb_assert (remote_exec_file_var != NULL); | |
1359 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
1360 | } | |
1361 | ||
1362 | /* The "set/show remote exec-file" show command hook. */ | |
1363 | ||
1364 | static void | |
1365 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1366 | struct cmd_list_element *cmd, const char *value) | |
1367 | { | |
acdf84a6 | 1368 | fprintf_filtered (file, "%s\n", get_remote_exec_file ()); |
94585166 DB |
1369 | } |
1370 | ||
c21236dc PA |
1371 | static int |
1372 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1373 | { |
74ca34ce | 1374 | int regnum, num_remote_regs, offset; |
74ca34ce | 1375 | struct packet_reg **remote_regs; |
ea9c271d | 1376 | |
4a22f64d | 1377 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1378 | { |
c21236dc | 1379 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1380 | |
4a22f64d | 1381 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1382 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1383 | r->pnum = -1; | |
1384 | else | |
1385 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1386 | ||
b323314b | 1387 | r->regnum = regnum; |
74ca34ce DJ |
1388 | } |
1389 | ||
1390 | /* Define the g/G packet format as the contents of each register | |
1391 | with a remote protocol number, in order of ascending protocol | |
1392 | number. */ | |
1393 | ||
224c3ddb | 1394 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1395 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1396 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1397 | regnum++) |
c21236dc PA |
1398 | if (regs[regnum].pnum != -1) |
1399 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1400 | |
39ef2f62 CB |
1401 | std::sort (remote_regs, remote_regs + num_remote_regs, |
1402 | [] (const packet_reg *a, const packet_reg *b) | |
1403 | { return a->pnum < b->pnum; }); | |
74ca34ce DJ |
1404 | |
1405 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1406 | { | |
1407 | remote_regs[regnum]->in_g_packet = 1; | |
1408 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1409 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1410 | } |
1411 | ||
c21236dc PA |
1412 | return offset; |
1413 | } | |
1414 | ||
1415 | /* Given the architecture described by GDBARCH, return the remote | |
1416 | protocol register's number and the register's offset in the g/G | |
1417 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1418 | If the target does not have a mapping for REGNUM, return false, | |
1419 | otherwise, return true. */ | |
1420 | ||
1421 | int | |
1422 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1423 | int *pnum, int *poffset) | |
1424 | { | |
c21236dc PA |
1425 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1426 | ||
b80406ac | 1427 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1428 | |
b80406ac | 1429 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1430 | |
1431 | *pnum = regs[regnum].pnum; | |
1432 | *poffset = regs[regnum].offset; | |
1433 | ||
c21236dc PA |
1434 | return *pnum != -1; |
1435 | } | |
1436 | ||
9d6eea31 | 1437 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1438 | { |
c21236dc PA |
1439 | /* Use the architecture to build a regnum<->pnum table, which will be |
1440 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1441 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1442 | |
74ca34ce DJ |
1443 | /* Record the maximum possible size of the g packet - it may turn out |
1444 | to be smaller. */ | |
9d6eea31 PA |
1445 | this->sizeof_g_packet |
1446 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1447 | |
0df8b418 | 1448 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1449 | remote stubs have a hardwired buffer size of 400 bytes |
1450 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1451 | as the maximum packet-size to ensure that the packet and an extra | |
1452 | NUL character can always fit in the buffer. This stops GDB | |
1453 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1454 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1455 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1456 | |
ea9c271d | 1457 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1458 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1459 | |
1460 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1461 | default, adjust the size accordingly. Remember that each byte is |
1462 | encoded as two characters. 32 is the overhead for the packet | |
1463 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1464 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1465 | little. */ |
9d6eea31 PA |
1466 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1467 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1468 | } |
1469 | ||
6b8edb51 PA |
1470 | /* Get a pointer to the current remote target. If not connected to a |
1471 | remote target, return NULL. */ | |
1472 | ||
1473 | static remote_target * | |
1474 | get_current_remote_target () | |
1475 | { | |
5b6d1e4f | 1476 | target_ops *proc_target = current_inferior ()->process_target (); |
6b8edb51 PA |
1477 | return dynamic_cast<remote_target *> (proc_target); |
1478 | } | |
1479 | ||
ea9c271d DJ |
1480 | /* Return the current allowed size of a remote packet. This is |
1481 | inferred from the current architecture, and should be used to | |
1482 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1483 | long |
1484 | remote_target::get_remote_packet_size () | |
ea9c271d | 1485 | { |
be2a5f71 | 1486 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1487 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1488 | |
be2a5f71 DJ |
1489 | if (rs->explicit_packet_size) |
1490 | return rs->explicit_packet_size; | |
1491 | ||
ea9c271d | 1492 | return rsa->remote_packet_size; |
d01949b6 AC |
1493 | } |
1494 | ||
ad10f812 | 1495 | static struct packet_reg * |
5cd63fda PA |
1496 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1497 | long regnum) | |
ad10f812 | 1498 | { |
5cd63fda | 1499 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1500 | return NULL; |
1501 | else | |
ad10f812 | 1502 | { |
ea9c271d | 1503 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1504 | |
b323314b AC |
1505 | gdb_assert (r->regnum == regnum); |
1506 | return r; | |
ad10f812 | 1507 | } |
ad10f812 AC |
1508 | } |
1509 | ||
1510 | static struct packet_reg * | |
5cd63fda PA |
1511 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1512 | LONGEST pnum) | |
ad10f812 | 1513 | { |
b323314b | 1514 | int i; |
a744cf53 | 1515 | |
5cd63fda | 1516 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1517 | { |
ea9c271d | 1518 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1519 | |
b323314b AC |
1520 | if (r->pnum == pnum) |
1521 | return r; | |
ad10f812 AC |
1522 | } |
1523 | return NULL; | |
d01949b6 AC |
1524 | } |
1525 | ||
9a7071a8 JB |
1526 | /* Allow the user to specify what sequence to send to the remote |
1527 | when he requests a program interruption: Although ^C is usually | |
1528 | what remote systems expect (this is the default, here), it is | |
1529 | sometimes preferable to send a break. On other systems such | |
1530 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1531 | is required in order to interrupt the execution. */ | |
1532 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1533 | const char interrupt_sequence_break[] = "BREAK"; | |
1534 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1535 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1536 | { |
1537 | interrupt_sequence_control_c, | |
1538 | interrupt_sequence_break, | |
1539 | interrupt_sequence_break_g, | |
1540 | NULL | |
1541 | }; | |
1542 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1543 | ||
1544 | static void | |
1545 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1546 | struct cmd_list_element *c, | |
1547 | const char *value) | |
1548 | { | |
1549 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
1550 | fprintf_filtered (file, | |
1551 | _("Send the ASCII ETX character (Ctrl-c) " | |
1552 | "to the remote target to interrupt the " | |
1553 | "execution of the program.\n")); | |
1554 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
1555 | fprintf_filtered (file, | |
1556 | _("send a break signal to the remote target " | |
1557 | "to interrupt the execution of the program.\n")); | |
1558 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
1559 | fprintf_filtered (file, | |
1560 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1561 | "the remote target to interrupt the execution " | |
1562 | "of Linux kernel.\n")); | |
1563 | else | |
1564 | internal_error (__FILE__, __LINE__, | |
1565 | _("Invalid value for interrupt_sequence_mode: %s."), | |
1566 | interrupt_sequence_mode); | |
1567 | } | |
6426a772 | 1568 | |
9a7071a8 JB |
1569 | /* This boolean variable specifies whether interrupt_sequence is sent |
1570 | to the remote target when gdb connects to it. | |
1571 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1572 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
491144b5 | 1573 | static bool interrupt_on_connect = false; |
c906108c | 1574 | |
9a7071a8 JB |
1575 | /* This variable is used to implement the "set/show remotebreak" commands. |
1576 | Since these commands are now deprecated in favor of "set/show remote | |
1577 | interrupt-sequence", it no longer has any effect on the code. */ | |
491144b5 | 1578 | static bool remote_break; |
c906108c | 1579 | |
9a7071a8 | 1580 | static void |
eb4c3f4a | 1581 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1582 | { |
1583 | if (remote_break) | |
1584 | interrupt_sequence_mode = interrupt_sequence_break; | |
1585 | else | |
1586 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1587 | } | |
1588 | ||
1589 | static void | |
1590 | show_remotebreak (struct ui_file *file, int from_tty, | |
1591 | struct cmd_list_element *c, | |
1592 | const char *value) | |
1593 | { | |
1594 | } | |
1595 | ||
c906108c SS |
1596 | /* This variable sets the number of bits in an address that are to be |
1597 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1598 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1599 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1600 | initial implementation of remote.c restricted the address sent in | |
1601 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1602 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1603 | address was never sent. Since fixing this bug may cause a break in | |
85102364 | 1604 | some remote targets this variable is principally provided to |
23860348 | 1605 | facilitate backward compatibility. */ |
c906108c | 1606 | |
883b9c6c | 1607 | static unsigned int remote_address_size; |
c906108c | 1608 | |
11cf8741 | 1609 | \f |
11cf8741 | 1610 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1611 | memory read/write packet. MIN (rsa->remote_packet_size, |
1612 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1613 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1614 | (speed up transfers). The variables ``preferred_*'' (the user |
1615 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1616 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1617 | |
1618 | struct memory_packet_config | |
1619 | { | |
a121b7c1 | 1620 | const char *name; |
11cf8741 JM |
1621 | long size; |
1622 | int fixed_p; | |
1623 | }; | |
1624 | ||
cc0be08f PA |
1625 | /* The default max memory-write-packet-size, when the setting is |
1626 | "fixed". The 16k is historical. (It came from older GDB's using | |
1627 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1628 | don't cope very well with large alloca calls.) */ | |
1629 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1630 | |
1631 | /* The minimum remote packet size for memory transfers. Ensures we | |
1632 | can write at least one byte. */ | |
1633 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1634 | ||
cc0be08f PA |
1635 | /* Get the memory packet size, assuming it is fixed. */ |
1636 | ||
1637 | static long | |
1638 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1639 | { | |
1640 | gdb_assert (config->fixed_p); | |
1641 | ||
1642 | if (config->size <= 0) | |
1643 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1644 | else | |
1645 | return config->size; | |
1646 | } | |
1647 | ||
11cf8741 JM |
1648 | /* Compute the current size of a read/write packet. Since this makes |
1649 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1650 | ||
6b8edb51 PA |
1651 | long |
1652 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 1653 | { |
d01949b6 | 1654 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1655 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1656 | |
11cf8741 JM |
1657 | long what_they_get; |
1658 | if (config->fixed_p) | |
cc0be08f | 1659 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1660 | else |
1661 | { | |
ea9c271d | 1662 | what_they_get = get_remote_packet_size (); |
23860348 | 1663 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1664 | if (config->size > 0 |
1665 | && what_they_get > config->size) | |
1666 | what_they_get = config->size; | |
be2a5f71 DJ |
1667 | |
1668 | /* Limit it to the size of the targets ``g'' response unless we have | |
1669 | permission from the stub to use a larger packet size. */ | |
1670 | if (rs->explicit_packet_size == 0 | |
1671 | && rsa->actual_register_packet_size > 0 | |
1672 | && what_they_get > rsa->actual_register_packet_size) | |
1673 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1674 | } |
a5c0808e PA |
1675 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1676 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1677 | |
1678 | /* Make sure there is room in the global buffer for this packet | |
1679 | (including its trailing NUL byte). */ | |
8d64371b TT |
1680 | if (rs->buf.size () < what_they_get + 1) |
1681 | rs->buf.resize (2 * what_they_get); | |
6d820c5c | 1682 | |
11cf8741 JM |
1683 | return what_they_get; |
1684 | } | |
1685 | ||
0df8b418 | 1686 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1687 | something really big then do a sanity check. */ |
11cf8741 JM |
1688 | |
1689 | static void | |
ac88e2de | 1690 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1691 | { |
1692 | int fixed_p = config->fixed_p; | |
1693 | long size = config->size; | |
a744cf53 | 1694 | |
11cf8741 | 1695 | if (args == NULL) |
8a3fe4f8 | 1696 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1697 | else if (strcmp (args, "hard") == 0 |
1698 | || strcmp (args, "fixed") == 0) | |
1699 | fixed_p = 1; | |
1700 | else if (strcmp (args, "soft") == 0 | |
1701 | || strcmp (args, "limit") == 0) | |
1702 | fixed_p = 0; | |
1703 | else | |
1704 | { | |
1705 | char *end; | |
a744cf53 | 1706 | |
11cf8741 JM |
1707 | size = strtoul (args, &end, 0); |
1708 | if (args == end) | |
8a3fe4f8 | 1709 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1710 | |
1711 | /* Instead of explicitly capping the size of a packet to or | |
1712 | disallowing it, the user is allowed to set the size to | |
1713 | something arbitrarily large. */ | |
11cf8741 | 1714 | } |
a5c0808e | 1715 | |
23860348 | 1716 | /* Extra checks? */ |
11cf8741 JM |
1717 | if (fixed_p && !config->fixed_p) |
1718 | { | |
cc0be08f PA |
1719 | /* So that the query shows the correct value. */ |
1720 | long query_size = (size <= 0 | |
1721 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
1722 | : size); | |
1723 | ||
e2e0b3e5 AC |
1724 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1725 | "of %ld bytes. Change the packet size? "), | |
cc0be08f | 1726 | config->name, query_size)) |
8a3fe4f8 | 1727 | error (_("Packet size not changed.")); |
11cf8741 | 1728 | } |
23860348 | 1729 | /* Update the config. */ |
11cf8741 JM |
1730 | config->fixed_p = fixed_p; |
1731 | config->size = size; | |
1732 | } | |
1733 | ||
1734 | static void | |
1735 | show_memory_packet_size (struct memory_packet_config *config) | |
1736 | { | |
cc0be08f PA |
1737 | if (config->size == 0) |
1738 | printf_filtered (_("The %s is 0 (default). "), config->name); | |
1739 | else | |
1740 | printf_filtered (_("The %s is %ld. "), config->name, config->size); | |
11cf8741 | 1741 | if (config->fixed_p) |
a3f17187 | 1742 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
cc0be08f | 1743 | get_fixed_memory_packet_size (config)); |
11cf8741 | 1744 | else |
cc0be08f | 1745 | { |
6b8edb51 | 1746 | remote_target *remote = get_current_remote_target (); |
cc0be08f | 1747 | |
6b8edb51 | 1748 | if (remote != NULL) |
cc0be08f | 1749 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
6b8edb51 | 1750 | remote->get_memory_packet_size (config)); |
cc0be08f PA |
1751 | else |
1752 | puts_filtered ("The actual limit will be further reduced " | |
1753 | "dependent on the target.\n"); | |
1754 | } | |
11cf8741 JM |
1755 | } |
1756 | ||
5b6d1e4f | 1757 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1758 | static struct memory_packet_config memory_write_packet_config = |
1759 | { | |
1760 | "memory-write-packet-size", | |
1761 | }; | |
1762 | ||
1763 | static void | |
ac88e2de | 1764 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1765 | { |
1766 | set_memory_packet_size (args, &memory_write_packet_config); | |
1767 | } | |
1768 | ||
1769 | static void | |
ac88e2de | 1770 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1771 | { |
1772 | show_memory_packet_size (&memory_write_packet_config); | |
1773 | } | |
1774 | ||
055303e2 AB |
1775 | /* Show the number of hardware watchpoints that can be used. */ |
1776 | ||
1777 | static void | |
1778 | show_hardware_watchpoint_limit (struct ui_file *file, int from_tty, | |
1779 | struct cmd_list_element *c, | |
1780 | const char *value) | |
1781 | { | |
1782 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1783 | "watchpoints is %s.\n"), value); | |
1784 | } | |
1785 | ||
1786 | /* Show the length limit (in bytes) for hardware watchpoints. */ | |
1787 | ||
1788 | static void | |
1789 | show_hardware_watchpoint_length_limit (struct ui_file *file, int from_tty, | |
1790 | struct cmd_list_element *c, | |
1791 | const char *value) | |
1792 | { | |
1793 | fprintf_filtered (file, _("The maximum length (in bytes) of a target " | |
1794 | "hardware watchpoint is %s.\n"), value); | |
1795 | } | |
1796 | ||
1797 | /* Show the number of hardware breakpoints that can be used. */ | |
1798 | ||
1799 | static void | |
1800 | show_hardware_breakpoint_limit (struct ui_file *file, int from_tty, | |
1801 | struct cmd_list_element *c, | |
1802 | const char *value) | |
1803 | { | |
1804 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1805 | "breakpoints is %s.\n"), value); | |
1806 | } | |
1807 | ||
6cc8564b LM |
1808 | /* Controls the maximum number of characters to display in the debug output |
1809 | for each remote packet. The remaining characters are omitted. */ | |
1810 | ||
1811 | static int remote_packet_max_chars = 512; | |
1812 | ||
1813 | /* Show the maximum number of characters to display for each remote packet | |
1814 | when remote debugging is enabled. */ | |
1815 | ||
1816 | static void | |
1817 | show_remote_packet_max_chars (struct ui_file *file, int from_tty, | |
1818 | struct cmd_list_element *c, | |
1819 | const char *value) | |
1820 | { | |
1821 | fprintf_filtered (file, _("Number of remote packet characters to " | |
1822 | "display is %s.\n"), value); | |
1823 | } | |
1824 | ||
6b8edb51 PA |
1825 | long |
1826 | remote_target::get_memory_write_packet_size () | |
11cf8741 JM |
1827 | { |
1828 | return get_memory_packet_size (&memory_write_packet_config); | |
1829 | } | |
1830 | ||
5b6d1e4f | 1831 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1832 | static struct memory_packet_config memory_read_packet_config = |
1833 | { | |
1834 | "memory-read-packet-size", | |
1835 | }; | |
1836 | ||
1837 | static void | |
ac88e2de | 1838 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1839 | { |
1840 | set_memory_packet_size (args, &memory_read_packet_config); | |
1841 | } | |
1842 | ||
1843 | static void | |
ac88e2de | 1844 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1845 | { |
1846 | show_memory_packet_size (&memory_read_packet_config); | |
1847 | } | |
1848 | ||
6b8edb51 PA |
1849 | long |
1850 | remote_target::get_memory_read_packet_size () | |
11cf8741 JM |
1851 | { |
1852 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1853 | |
11cf8741 JM |
1854 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1855 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1856 | increased beyond this. */ |
1857 | if (size > get_remote_packet_size ()) | |
1858 | size = get_remote_packet_size (); | |
11cf8741 JM |
1859 | return size; |
1860 | } | |
1861 | ||
11cf8741 | 1862 | \f |
5a2468f5 | 1863 | |
5a2468f5 JM |
1864 | struct packet_config |
1865 | { | |
bb572ddd DJ |
1866 | const char *name; |
1867 | const char *title; | |
4082afcc PA |
1868 | |
1869 | /* If auto, GDB auto-detects support for this packet or feature, | |
1870 | either through qSupported, or by trying the packet and looking | |
1871 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1872 | packet. If false, the packet is disabled. Configs that don't |
1873 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1874 | enum auto_boolean detect; |
4082afcc PA |
1875 | |
1876 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1877 | enum packet_support support; |
1878 | }; | |
1879 | ||
4082afcc PA |
1880 | static enum packet_support packet_config_support (struct packet_config *config); |
1881 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1882 | |
1883 | static void | |
fba45db2 | 1884 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1885 | { |
a121b7c1 | 1886 | const char *support = "internal-error"; |
a744cf53 | 1887 | |
4082afcc | 1888 | switch (packet_config_support (config)) |
5a2468f5 JM |
1889 | { |
1890 | case PACKET_ENABLE: | |
1891 | support = "enabled"; | |
1892 | break; | |
1893 | case PACKET_DISABLE: | |
1894 | support = "disabled"; | |
1895 | break; | |
1896 | case PACKET_SUPPORT_UNKNOWN: | |
1897 | support = "unknown"; | |
1898 | break; | |
1899 | } | |
1900 | switch (config->detect) | |
1901 | { | |
7f19b9a2 | 1902 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1903 | printf_filtered (_("Support for the `%s' packet " |
1904 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1905 | config->name, support); |
5a2468f5 | 1906 | break; |
7f19b9a2 AC |
1907 | case AUTO_BOOLEAN_TRUE: |
1908 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1909 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1910 | config->name, support); | |
8e248173 | 1911 | break; |
5a2468f5 JM |
1912 | } |
1913 | } | |
1914 | ||
1915 | static void | |
bb572ddd DJ |
1916 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1917 | const char *title, int legacy) | |
d471ea57 | 1918 | { |
5a2468f5 JM |
1919 | char *set_doc; |
1920 | char *show_doc; | |
d471ea57 | 1921 | char *cmd_name; |
3ed07be4 | 1922 | |
5a2468f5 JM |
1923 | config->name = name; |
1924 | config->title = title; | |
590042fc | 1925 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet.", |
b435e160 | 1926 | name, title); |
3e43a32a | 1927 | show_doc = xstrprintf ("Show current use of remote " |
590042fc | 1928 | "protocol `%s' (%s) packet.", |
b435e160 | 1929 | name, title); |
d471ea57 | 1930 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1931 | cmd_name = xstrprintf ("%s-packet", title); |
5e84b7ee SM |
1932 | set_show_commands cmds |
1933 | = add_setshow_auto_boolean_cmd (cmd_name, class_obscure, | |
1934 | &config->detect, set_doc, | |
1935 | show_doc, NULL, /* help_doc */ | |
1936 | NULL, | |
1937 | show_remote_protocol_packet_cmd, | |
1938 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1939 | ||
1eefb858 TT |
1940 | /* The command code copies the documentation strings. */ |
1941 | xfree (set_doc); | |
1942 | xfree (show_doc); | |
5e84b7ee | 1943 | |
23860348 | 1944 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1945 | if (legacy) |
1946 | { | |
1947 | char *legacy_name; | |
a744cf53 | 1948 | |
b435e160 | 1949 | legacy_name = xstrprintf ("%s-packet", name); |
5e84b7ee | 1950 | add_alias_cmd (legacy_name, cmds.set, class_obscure, 0, |
bb572ddd | 1951 | &remote_set_cmdlist); |
5e84b7ee | 1952 | add_alias_cmd (legacy_name, cmds.show, class_obscure, 0, |
bb572ddd | 1953 | &remote_show_cmdlist); |
d471ea57 | 1954 | } |
5a2468f5 JM |
1955 | } |
1956 | ||
d471ea57 | 1957 | static enum packet_result |
a76d924d | 1958 | packet_check_result (const char *buf) |
5a2468f5 | 1959 | { |
d471ea57 | 1960 | if (buf[0] != '\0') |
5a2468f5 | 1961 | { |
d471ea57 | 1962 | /* The stub recognized the packet request. Check that the |
23860348 | 1963 | operation succeeded. */ |
a76d924d DJ |
1964 | if (buf[0] == 'E' |
1965 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1966 | && buf[3] == '\0') | |
85102364 | 1967 | /* "Enn" - definitely an error. */ |
a76d924d DJ |
1968 | return PACKET_ERROR; |
1969 | ||
1970 | /* Always treat "E." as an error. This will be used for | |
1971 | more verbose error messages, such as E.memtypes. */ | |
1972 | if (buf[0] == 'E' && buf[1] == '.') | |
1973 | return PACKET_ERROR; | |
1974 | ||
1975 | /* The packet may or may not be OK. Just assume it is. */ | |
1976 | return PACKET_OK; | |
1977 | } | |
1978 | else | |
1979 | /* The stub does not support the packet. */ | |
1980 | return PACKET_UNKNOWN; | |
1981 | } | |
1982 | ||
8d64371b TT |
1983 | static enum packet_result |
1984 | packet_check_result (const gdb::char_vector &buf) | |
1985 | { | |
1986 | return packet_check_result (buf.data ()); | |
1987 | } | |
1988 | ||
a76d924d DJ |
1989 | static enum packet_result |
1990 | packet_ok (const char *buf, struct packet_config *config) | |
1991 | { | |
1992 | enum packet_result result; | |
1993 | ||
4082afcc PA |
1994 | if (config->detect != AUTO_BOOLEAN_TRUE |
1995 | && config->support == PACKET_DISABLE) | |
1996 | internal_error (__FILE__, __LINE__, | |
1997 | _("packet_ok: attempt to use a disabled packet")); | |
1998 | ||
a76d924d DJ |
1999 | result = packet_check_result (buf); |
2000 | switch (result) | |
2001 | { | |
2002 | case PACKET_OK: | |
2003 | case PACKET_ERROR: | |
2004 | /* The stub recognized the packet request. */ | |
4082afcc | 2005 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 2006 | { |
2189c312 SM |
2007 | remote_debug_printf ("Packet %s (%s) is supported", |
2008 | config->name, config->title); | |
d471ea57 | 2009 | config->support = PACKET_ENABLE; |
d471ea57 | 2010 | } |
a76d924d DJ |
2011 | break; |
2012 | case PACKET_UNKNOWN: | |
23860348 | 2013 | /* The stub does not support the packet. */ |
4082afcc PA |
2014 | if (config->detect == AUTO_BOOLEAN_AUTO |
2015 | && config->support == PACKET_ENABLE) | |
d471ea57 | 2016 | { |
4082afcc PA |
2017 | /* If the stub previously indicated that the packet was |
2018 | supported then there is a protocol error. */ | |
2019 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
2020 | config->name, config->title); | |
2021 | } | |
2022 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
2023 | { | |
2024 | /* The user set it wrong. */ | |
2025 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
2026 | config->name, config->title); | |
d471ea57 | 2027 | } |
4082afcc | 2028 | |
2189c312 SM |
2029 | remote_debug_printf ("Packet %s (%s) is NOT supported", |
2030 | config->name, config->title); | |
4082afcc | 2031 | config->support = PACKET_DISABLE; |
a76d924d | 2032 | break; |
5a2468f5 | 2033 | } |
a76d924d DJ |
2034 | |
2035 | return result; | |
5a2468f5 JM |
2036 | } |
2037 | ||
8d64371b TT |
2038 | static enum packet_result |
2039 | packet_ok (const gdb::char_vector &buf, struct packet_config *config) | |
2040 | { | |
2041 | return packet_ok (buf.data (), config); | |
2042 | } | |
2043 | ||
444abaca DJ |
2044 | enum { |
2045 | PACKET_vCont = 0, | |
2046 | PACKET_X, | |
2047 | PACKET_qSymbol, | |
2048 | PACKET_P, | |
2049 | PACKET_p, | |
2050 | PACKET_Z0, | |
2051 | PACKET_Z1, | |
2052 | PACKET_Z2, | |
2053 | PACKET_Z3, | |
2054 | PACKET_Z4, | |
15a201c8 | 2055 | PACKET_vFile_setfs, |
a6b151f1 DJ |
2056 | PACKET_vFile_open, |
2057 | PACKET_vFile_pread, | |
2058 | PACKET_vFile_pwrite, | |
2059 | PACKET_vFile_close, | |
2060 | PACKET_vFile_unlink, | |
b9e7b9c3 | 2061 | PACKET_vFile_readlink, |
0a93529c | 2062 | PACKET_vFile_fstat, |
0876f84a | 2063 | PACKET_qXfer_auxv, |
23181151 | 2064 | PACKET_qXfer_features, |
c78fa86a | 2065 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 2066 | PACKET_qXfer_libraries, |
2268b414 | 2067 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 2068 | PACKET_qXfer_memory_map, |
07e059b5 | 2069 | PACKET_qXfer_osdata, |
dc146f7c | 2070 | PACKET_qXfer_threads, |
0fb4aa4b | 2071 | PACKET_qXfer_statictrace_read, |
b3b9301e | 2072 | PACKET_qXfer_traceframe_info, |
169081d0 | 2073 | PACKET_qXfer_uib, |
711e434b | 2074 | PACKET_qGetTIBAddr, |
444abaca | 2075 | PACKET_qGetTLSAddr, |
be2a5f71 | 2076 | PACKET_qSupported, |
bd3eecc3 | 2077 | PACKET_qTStatus, |
89be2091 | 2078 | PACKET_QPassSignals, |
82075af2 | 2079 | PACKET_QCatchSyscalls, |
9b224c5e | 2080 | PACKET_QProgramSignals, |
bc3b087d | 2081 | PACKET_QSetWorkingDir, |
aefd8b33 | 2082 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
2083 | PACKET_QEnvironmentHexEncoded, |
2084 | PACKET_QEnvironmentReset, | |
2085 | PACKET_QEnvironmentUnset, | |
936d2992 | 2086 | PACKET_qCRC, |
08388c79 | 2087 | PACKET_qSearch_memory, |
2d717e4f DJ |
2088 | PACKET_vAttach, |
2089 | PACKET_vRun, | |
a6f3e723 | 2090 | PACKET_QStartNoAckMode, |
82f73884 | 2091 | PACKET_vKill, |
4aa995e1 PA |
2092 | PACKET_qXfer_siginfo_read, |
2093 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 2094 | PACKET_qAttached, |
4082afcc PA |
2095 | |
2096 | /* Support for conditional tracepoints. */ | |
782b2b07 | 2097 | PACKET_ConditionalTracepoints, |
4082afcc PA |
2098 | |
2099 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 2100 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
2101 | |
2102 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 2103 | PACKET_BreakpointCommands, |
4082afcc PA |
2104 | |
2105 | /* Support for fast tracepoints. */ | |
7a697b8d | 2106 | PACKET_FastTracepoints, |
4082afcc PA |
2107 | |
2108 | /* Support for static tracepoints. */ | |
0fb4aa4b | 2109 | PACKET_StaticTracepoints, |
4082afcc PA |
2110 | |
2111 | /* Support for installing tracepoints while a trace experiment is | |
2112 | running. */ | |
1e4d1764 | 2113 | PACKET_InstallInTrace, |
4082afcc | 2114 | |
40ab02ce MS |
2115 | PACKET_bc, |
2116 | PACKET_bs, | |
409873ef | 2117 | PACKET_TracepointSource, |
d914c394 | 2118 | PACKET_QAllow, |
78d85199 | 2119 | PACKET_qXfer_fdpic, |
03583c20 | 2120 | PACKET_QDisableRandomization, |
d1feda86 | 2121 | PACKET_QAgent, |
f6f899bf | 2122 | PACKET_QTBuffer_size, |
9accd112 MM |
2123 | PACKET_Qbtrace_off, |
2124 | PACKET_Qbtrace_bts, | |
b20a6524 | 2125 | PACKET_Qbtrace_pt, |
9accd112 | 2126 | PACKET_qXfer_btrace, |
4082afcc PA |
2127 | |
2128 | /* Support for the QNonStop packet. */ | |
2129 | PACKET_QNonStop, | |
2130 | ||
65706a29 PA |
2131 | /* Support for the QThreadEvents packet. */ |
2132 | PACKET_QThreadEvents, | |
2133 | ||
4082afcc PA |
2134 | /* Support for multi-process extensions. */ |
2135 | PACKET_multiprocess_feature, | |
2136 | ||
2137 | /* Support for enabling and disabling tracepoints while a trace | |
2138 | experiment is running. */ | |
2139 | PACKET_EnableDisableTracepoints_feature, | |
2140 | ||
2141 | /* Support for collecting strings using the tracenz bytecode. */ | |
2142 | PACKET_tracenz_feature, | |
2143 | ||
2144 | /* Support for continuing to run a trace experiment while GDB is | |
2145 | disconnected. */ | |
2146 | PACKET_DisconnectedTracing_feature, | |
2147 | ||
2148 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
2149 | PACKET_augmented_libraries_svr4_read_feature, | |
2150 | ||
f4abbc16 MM |
2151 | /* Support for the qXfer:btrace-conf:read packet. */ |
2152 | PACKET_qXfer_btrace_conf, | |
2153 | ||
d33501a5 MM |
2154 | /* Support for the Qbtrace-conf:bts:size packet. */ |
2155 | PACKET_Qbtrace_conf_bts_size, | |
2156 | ||
f7e6eed5 PA |
2157 | /* Support for swbreak+ feature. */ |
2158 | PACKET_swbreak_feature, | |
2159 | ||
2160 | /* Support for hwbreak+ feature. */ | |
2161 | PACKET_hwbreak_feature, | |
2162 | ||
89245bc0 DB |
2163 | /* Support for fork events. */ |
2164 | PACKET_fork_event_feature, | |
2165 | ||
2166 | /* Support for vfork events. */ | |
2167 | PACKET_vfork_event_feature, | |
2168 | ||
b20a6524 MM |
2169 | /* Support for the Qbtrace-conf:pt:size packet. */ |
2170 | PACKET_Qbtrace_conf_pt_size, | |
2171 | ||
94585166 DB |
2172 | /* Support for exec events. */ |
2173 | PACKET_exec_event_feature, | |
2174 | ||
750ce8d1 YQ |
2175 | /* Support for query supported vCont actions. */ |
2176 | PACKET_vContSupported, | |
2177 | ||
de979965 PA |
2178 | /* Support remote CTRL-C. */ |
2179 | PACKET_vCtrlC, | |
2180 | ||
f2faf941 PA |
2181 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
2182 | PACKET_no_resumed, | |
2183 | ||
2c2e7f87 LM |
2184 | /* Support for memory tagging, allocation tag fetch/store |
2185 | packets and the tag violation stop replies. */ | |
2186 | PACKET_memory_tagging_feature, | |
2187 | ||
444abaca DJ |
2188 | PACKET_MAX |
2189 | }; | |
506fb367 | 2190 | |
5b6d1e4f PA |
2191 | /* FIXME: needs to be per-remote-target. Ignoring this for now, |
2192 | assuming all remote targets are the same server (thus all support | |
2193 | the same packets). */ | |
444abaca | 2194 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 2195 | |
f7e6eed5 PA |
2196 | /* Returns the packet's corresponding "set remote foo-packet" command |
2197 | state. See struct packet_config for more details. */ | |
2198 | ||
2199 | static enum auto_boolean | |
2200 | packet_set_cmd_state (int packet) | |
2201 | { | |
2202 | return remote_protocol_packets[packet].detect; | |
2203 | } | |
2204 | ||
4082afcc PA |
2205 | /* Returns whether a given packet or feature is supported. This takes |
2206 | into account the state of the corresponding "set remote foo-packet" | |
2207 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2208 | |
4082afcc PA |
2209 | static enum packet_support |
2210 | packet_config_support (struct packet_config *config) | |
2211 | { | |
2212 | switch (config->detect) | |
444abaca | 2213 | { |
4082afcc PA |
2214 | case AUTO_BOOLEAN_TRUE: |
2215 | return PACKET_ENABLE; | |
2216 | case AUTO_BOOLEAN_FALSE: | |
2217 | return PACKET_DISABLE; | |
2218 | case AUTO_BOOLEAN_AUTO: | |
2219 | return config->support; | |
2220 | default: | |
2221 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 2222 | } |
4082afcc PA |
2223 | } |
2224 | ||
2225 | /* Same as packet_config_support, but takes the packet's enum value as | |
2226 | argument. */ | |
2227 | ||
2228 | static enum packet_support | |
2229 | packet_support (int packet) | |
2230 | { | |
2231 | struct packet_config *config = &remote_protocol_packets[packet]; | |
2232 | ||
2233 | return packet_config_support (config); | |
dc8acb97 MS |
2234 | } |
2235 | ||
5a2468f5 | 2236 | static void |
444abaca DJ |
2237 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2238 | struct cmd_list_element *c, | |
2239 | const char *value) | |
5a2468f5 | 2240 | { |
444abaca | 2241 | struct packet_config *packet; |
5a2468f5 | 2242 | |
444abaca DJ |
2243 | for (packet = remote_protocol_packets; |
2244 | packet < &remote_protocol_packets[PACKET_MAX]; | |
2245 | packet++) | |
2246 | { | |
2247 | if (&packet->detect == c->var) | |
2248 | { | |
2249 | show_packet_config_cmd (packet); | |
2250 | return; | |
2251 | } | |
2252 | } | |
9b20d036 | 2253 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 2254 | c->name); |
5a2468f5 JM |
2255 | } |
2256 | ||
d471ea57 AC |
2257 | /* Should we try one of the 'Z' requests? */ |
2258 | ||
2259 | enum Z_packet_type | |
2260 | { | |
2261 | Z_PACKET_SOFTWARE_BP, | |
2262 | Z_PACKET_HARDWARE_BP, | |
2263 | Z_PACKET_WRITE_WP, | |
2264 | Z_PACKET_READ_WP, | |
2265 | Z_PACKET_ACCESS_WP, | |
2266 | NR_Z_PACKET_TYPES | |
2267 | }; | |
96baa820 | 2268 | |
d471ea57 | 2269 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2270 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2271 | |
7f19b9a2 | 2272 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2273 | |
2274 | static void | |
eb4c3f4a | 2275 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2276 | struct cmd_list_element *c) |
96baa820 | 2277 | { |
d471ea57 | 2278 | int i; |
a744cf53 | 2279 | |
d471ea57 | 2280 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 2281 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
2282 | } |
2283 | ||
2284 | static void | |
08546159 AC |
2285 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2286 | struct cmd_list_element *c, | |
2287 | const char *value) | |
96baa820 | 2288 | { |
d471ea57 | 2289 | int i; |
a744cf53 | 2290 | |
d471ea57 AC |
2291 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2292 | { | |
444abaca | 2293 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 2294 | } |
96baa820 JM |
2295 | } |
2296 | ||
4082afcc PA |
2297 | /* Returns true if the multi-process extensions are in effect. */ |
2298 | ||
2299 | static int | |
2300 | remote_multi_process_p (struct remote_state *rs) | |
2301 | { | |
2302 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
2303 | } | |
2304 | ||
de0d863e DB |
2305 | /* Returns true if fork events are supported. */ |
2306 | ||
2307 | static int | |
2308 | remote_fork_event_p (struct remote_state *rs) | |
2309 | { | |
2310 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
2311 | } | |
2312 | ||
c269dbdb DB |
2313 | /* Returns true if vfork events are supported. */ |
2314 | ||
2315 | static int | |
2316 | remote_vfork_event_p (struct remote_state *rs) | |
2317 | { | |
2318 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
2319 | } | |
2320 | ||
d46addbb DB |
2321 | /* Returns true if exec events are supported. */ |
2322 | ||
2323 | static int | |
2324 | remote_exec_event_p (struct remote_state *rs) | |
2325 | { | |
2326 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
2327 | } | |
2328 | ||
2c2e7f87 LM |
2329 | /* Returns true if memory tagging is supported, false otherwise. */ |
2330 | ||
2331 | static bool | |
2332 | remote_memory_tagging_p () | |
2333 | { | |
2334 | return packet_support (PACKET_memory_tagging_feature) == PACKET_ENABLE; | |
2335 | } | |
2336 | ||
cbb8991c DB |
2337 | /* Insert fork catchpoint target routine. If fork events are enabled |
2338 | then return success, nothing more to do. */ | |
2339 | ||
f6ac5f3d PA |
2340 | int |
2341 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
2342 | { |
2343 | struct remote_state *rs = get_remote_state (); | |
2344 | ||
2345 | return !remote_fork_event_p (rs); | |
2346 | } | |
2347 | ||
2348 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2349 | return success. */ | |
2350 | ||
f6ac5f3d PA |
2351 | int |
2352 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2353 | { |
2354 | return 0; | |
2355 | } | |
2356 | ||
2357 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2358 | then return success, nothing more to do. */ | |
2359 | ||
f6ac5f3d PA |
2360 | int |
2361 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
2362 | { |
2363 | struct remote_state *rs = get_remote_state (); | |
2364 | ||
2365 | return !remote_vfork_event_p (rs); | |
2366 | } | |
2367 | ||
2368 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2369 | return success. */ | |
2370 | ||
f6ac5f3d PA |
2371 | int |
2372 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2373 | { |
2374 | return 0; | |
2375 | } | |
2376 | ||
d46addbb DB |
2377 | /* Insert exec catchpoint target routine. If exec events are |
2378 | enabled, just return success. */ | |
2379 | ||
f6ac5f3d PA |
2380 | int |
2381 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
2382 | { |
2383 | struct remote_state *rs = get_remote_state (); | |
2384 | ||
2385 | return !remote_exec_event_p (rs); | |
2386 | } | |
2387 | ||
2388 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2389 | return success. */ | |
2390 | ||
f6ac5f3d PA |
2391 | int |
2392 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2393 | { |
2394 | return 0; | |
2395 | } | |
2396 | ||
c906108c SS |
2397 | \f |
2398 | ||
ffdd69cf TT |
2399 | /* Take advantage of the fact that the TID field is not used, to tag |
2400 | special ptids with it set to != 0. */ | |
2401 | static const ptid_t magic_null_ptid (42000, -1, 1); | |
2402 | static const ptid_t not_sent_ptid (42000, -2, 1); | |
2403 | static const ptid_t any_thread_ptid (42000, 0, 1); | |
79d7f229 | 2404 | |
0b16c5cf PA |
2405 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2406 | detach instead of killing it when bailing out). */ | |
2407 | ||
6b8edb51 PA |
2408 | int |
2409 | remote_target::remote_query_attached (int pid) | |
0b16c5cf PA |
2410 | { |
2411 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2412 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2413 | |
4082afcc | 2414 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2415 | return 0; |
2416 | ||
2417 | if (remote_multi_process_p (rs)) | |
8d64371b | 2418 | xsnprintf (rs->buf.data (), size, "qAttached:%x", pid); |
0b16c5cf | 2419 | else |
8d64371b | 2420 | xsnprintf (rs->buf.data (), size, "qAttached"); |
0b16c5cf PA |
2421 | |
2422 | putpkt (rs->buf); | |
8d64371b | 2423 | getpkt (&rs->buf, 0); |
0b16c5cf PA |
2424 | |
2425 | switch (packet_ok (rs->buf, | |
1554e9be | 2426 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
2427 | { |
2428 | case PACKET_OK: | |
8d64371b | 2429 | if (strcmp (rs->buf.data (), "1") == 0) |
0b16c5cf PA |
2430 | return 1; |
2431 | break; | |
2432 | case PACKET_ERROR: | |
8d64371b | 2433 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
0b16c5cf PA |
2434 | break; |
2435 | case PACKET_UNKNOWN: | |
2436 | break; | |
2437 | } | |
2438 | ||
2439 | return 0; | |
2440 | } | |
2441 | ||
49c62f2e PA |
2442 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2443 | has been invented by GDB, instead of reported by the target. Since | |
2444 | we can be connected to a remote system before before knowing about | |
2445 | any inferior, mark the target with execution when we find the first | |
2446 | inferior. If ATTACHED is 1, then we had just attached to this | |
2447 | inferior. If it is 0, then we just created this inferior. If it | |
2448 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2449 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2450 | attempt to open this inferior's executable as the main executable | |
2451 | if no main executable is open already. */ | |
1941c569 | 2452 | |
6b8edb51 | 2453 | inferior * |
9ab8741a | 2454 | remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 | 2455 | int try_open_exec) |
1941c569 | 2456 | { |
1941c569 PA |
2457 | struct inferior *inf; |
2458 | ||
0b16c5cf PA |
2459 | /* Check whether this process we're learning about is to be |
2460 | considered attached, or if is to be considered to have been | |
2461 | spawned by the stub. */ | |
2462 | if (attached == -1) | |
2463 | attached = remote_query_attached (pid); | |
2464 | ||
f5656ead | 2465 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2466 | { |
2467 | /* If the target shares code across all inferiors, then every | |
2468 | attach adds a new inferior. */ | |
2469 | inf = add_inferior (pid); | |
2470 | ||
2471 | /* ... and every inferior is bound to the same program space. | |
2472 | However, each inferior may still have its own address | |
2473 | space. */ | |
2474 | inf->aspace = maybe_new_address_space (); | |
2475 | inf->pspace = current_program_space; | |
2476 | } | |
2477 | else | |
2478 | { | |
2479 | /* In the traditional debugging scenario, there's a 1-1 match | |
2480 | between program/address spaces. We simply bind the inferior | |
2481 | to the program space's address space. */ | |
2482 | inf = current_inferior (); | |
78f2c40a PA |
2483 | |
2484 | /* However, if the current inferior is already bound to a | |
2485 | process, find some other empty inferior. */ | |
2486 | if (inf->pid != 0) | |
2487 | { | |
2488 | inf = nullptr; | |
2489 | for (inferior *it : all_inferiors ()) | |
2490 | if (it->pid == 0) | |
2491 | { | |
2492 | inf = it; | |
2493 | break; | |
2494 | } | |
2495 | } | |
2496 | if (inf == nullptr) | |
2497 | { | |
2498 | /* Since all inferiors were already bound to a process, add | |
2499 | a new inferior. */ | |
2500 | inf = add_inferior_with_spaces (); | |
2501 | } | |
2502 | switch_to_inferior_no_thread (inf); | |
02980c56 | 2503 | inf->push_target (this); |
6c95b8df PA |
2504 | inferior_appeared (inf, pid); |
2505 | } | |
1941c569 | 2506 | |
0b16c5cf | 2507 | inf->attach_flag = attached; |
49c62f2e | 2508 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2509 | |
1b6e6f5c GB |
2510 | /* If no main executable is currently open then attempt to |
2511 | open the file that was executed to create this inferior. */ | |
835205d0 | 2512 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2513 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2514 | |
a2fedca9 PW |
2515 | /* Check for exec file mismatch, and let the user solve it. */ |
2516 | validate_exec_file (1); | |
2517 | ||
1941c569 PA |
2518 | return inf; |
2519 | } | |
2520 | ||
7aabaf9d | 2521 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
5b6d1e4f PA |
2522 | static remote_thread_info *get_remote_thread_info (remote_target *target, |
2523 | ptid_t ptid); | |
85ad3aaf | 2524 | |
1941c569 | 2525 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
6eccc2c8 AB |
2526 | according to EXECUTING and RUNNING respectively. If SILENT_P (or the |
2527 | remote_state::starting_up flag) is true then the new thread is added | |
2528 | silently, otherwise the new thread will be announced to the user. */ | |
1941c569 | 2529 | |
00431a78 | 2530 | thread_info * |
6eccc2c8 AB |
2531 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing, |
2532 | bool silent_p) | |
c906108c | 2533 | { |
b7ea362b | 2534 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2535 | struct thread_info *thread; |
b7ea362b PA |
2536 | |
2537 | /* GDB historically didn't pull threads in the initial connection | |
2538 | setup. If the remote target doesn't even have a concept of | |
2539 | threads (e.g., a bare-metal target), even if internally we | |
2540 | consider that a single-threaded target, mentioning a new thread | |
2541 | might be confusing to the user. Be silent then, preserving the | |
2542 | age old behavior. */ | |
6eccc2c8 | 2543 | if (rs->starting_up || silent_p) |
5b6d1e4f | 2544 | thread = add_thread_silent (this, ptid); |
b7ea362b | 2545 | else |
5b6d1e4f | 2546 | thread = add_thread (this, ptid); |
1941c569 | 2547 | |
c9d22089 SM |
2548 | /* We start by assuming threads are resumed. That state then gets updated |
2549 | when we process a matching stop reply. */ | |
2550 | get_remote_thread_info (thread)->set_resumed (); | |
2551 | ||
5b6d1e4f PA |
2552 | set_executing (this, ptid, executing); |
2553 | set_running (this, ptid, running); | |
00431a78 PA |
2554 | |
2555 | return thread; | |
1941c569 PA |
2556 | } |
2557 | ||
2558 | /* Come here when we learn about a thread id from the remote target. | |
2559 | It may be the first time we hear about such thread, so take the | |
2560 | opportunity to add it to GDB's thread list. In case this is the | |
2561 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2562 | GDB's inferior list as well. EXECUTING indicates whether the |
2563 | thread is (internally) executing or stopped. */ | |
1941c569 | 2564 | |
6b8edb51 | 2565 | void |
8a82de58 | 2566 | remote_target::remote_notice_new_inferior (ptid_t currthread, bool executing) |
1941c569 | 2567 | { |
0d5b594f PA |
2568 | /* In non-stop mode, we assume new found threads are (externally) |
2569 | running until proven otherwise with a stop reply. In all-stop, | |
2570 | we can only get here if all threads are stopped. */ | |
8a82de58 | 2571 | bool running = target_is_non_stop_p (); |
0d5b594f | 2572 | |
c906108c SS |
2573 | /* If this is a new thread, add it to GDB's thread list. |
2574 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 | 2575 | |
5b6d1e4f | 2576 | thread_info *tp = find_thread_ptid (this, currthread); |
00431a78 | 2577 | if (tp != NULL && tp->state == THREAD_EXITED) |
82f73884 PA |
2578 | { |
2579 | /* We're seeing an event on a thread id we knew had exited. | |
2580 | This has to be a new thread reusing the old id. Add it. */ | |
6eccc2c8 | 2581 | remote_add_thread (currthread, running, executing, false); |
82f73884 PA |
2582 | return; |
2583 | } | |
2584 | ||
5b6d1e4f | 2585 | if (!in_thread_list (this, currthread)) |
c0a2216e | 2586 | { |
1941c569 | 2587 | struct inferior *inf = NULL; |
e99b03dc | 2588 | int pid = currthread.pid (); |
1941c569 | 2589 | |
0e998d96 | 2590 | if (inferior_ptid.is_pid () |
e99b03dc | 2591 | && pid == inferior_ptid.pid ()) |
c0a2216e PA |
2592 | { |
2593 | /* inferior_ptid has no thread member yet. This can happen | |
2594 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2595 | stub doesn't support qC. This is the first stop reported | |
2596 | after an attach, so this is the main thread. Update the | |
2597 | ptid in the thread list. */ | |
5b6d1e4f PA |
2598 | if (in_thread_list (this, ptid_t (pid))) |
2599 | thread_change_ptid (this, inferior_ptid, currthread); | |
bad34192 PA |
2600 | else |
2601 | { | |
0ac55310 | 2602 | thread_info *thr |
6eccc2c8 | 2603 | = remote_add_thread (currthread, running, executing, false); |
0ac55310 | 2604 | switch_to_thread (thr); |
bad34192 | 2605 | } |
dc146f7c | 2606 | return; |
c0a2216e | 2607 | } |
82f73884 | 2608 | |
d7e15655 | 2609 | if (magic_null_ptid == inferior_ptid) |
c0a2216e PA |
2610 | { |
2611 | /* inferior_ptid is not set yet. This can happen with the | |
2612 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2613 | doesn't support qC. This is the first stop reported | |
2614 | after an attach, so this is the main thread. Update the | |
2615 | ptid in the thread list. */ | |
5b6d1e4f | 2616 | thread_change_ptid (this, inferior_ptid, currthread); |
82f73884 | 2617 | return; |
c0a2216e | 2618 | } |
82f73884 | 2619 | |
29c87f7f PA |
2620 | /* When connecting to a target remote, or to a target |
2621 | extended-remote which already was debugging an inferior, we | |
2622 | may not know about it yet. Add it before adding its child | |
2623 | thread, so notifications are emitted in a sensible order. */ | |
5b6d1e4f | 2624 | if (find_inferior_pid (this, currthread.pid ()) == NULL) |
49c62f2e PA |
2625 | { |
2626 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 2627 | bool fake_pid_p = !remote_multi_process_p (rs); |
49c62f2e PA |
2628 | |
2629 | inf = remote_add_inferior (fake_pid_p, | |
e99b03dc | 2630 | currthread.pid (), -1, 1); |
49c62f2e | 2631 | } |
29c87f7f | 2632 | |
82f73884 | 2633 | /* This is really a new thread. Add it. */ |
00431a78 | 2634 | thread_info *new_thr |
6eccc2c8 | 2635 | = remote_add_thread (currthread, running, executing, false); |
1941c569 PA |
2636 | |
2637 | /* If we found a new inferior, let the common code do whatever | |
2638 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2639 | breakpoints), unless we're just setting up an all-stop |
2640 | connection. */ | |
1941c569 | 2641 | if (inf != NULL) |
b7ea362b PA |
2642 | { |
2643 | struct remote_state *rs = get_remote_state (); | |
2644 | ||
6efcd9a8 | 2645 | if (!rs->starting_up) |
00431a78 | 2646 | notice_new_inferior (new_thr, executing, 0); |
b7ea362b | 2647 | } |
c0a2216e | 2648 | } |
c906108c SS |
2649 | } |
2650 | ||
85ad3aaf | 2651 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2652 | |
7aabaf9d SM |
2653 | static remote_thread_info * |
2654 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2655 | { |
85ad3aaf | 2656 | gdb_assert (thread != NULL); |
dc146f7c | 2657 | |
85ad3aaf | 2658 | if (thread->priv == NULL) |
7aabaf9d | 2659 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2660 | |
7aabaf9d | 2661 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2662 | } |
2663 | ||
5b6d1e4f PA |
2664 | /* Return PTID's private thread data, creating it if necessary. */ |
2665 | ||
7aabaf9d | 2666 | static remote_thread_info * |
5b6d1e4f | 2667 | get_remote_thread_info (remote_target *target, ptid_t ptid) |
85ad3aaf | 2668 | { |
5b6d1e4f | 2669 | thread_info *thr = find_thread_ptid (target, ptid); |
00431a78 | 2670 | return get_remote_thread_info (thr); |
dc146f7c VP |
2671 | } |
2672 | ||
74531fed PA |
2673 | /* Call this function as a result of |
2674 | 1) A halt indication (T packet) containing a thread id | |
2675 | 2) A direct query of currthread | |
0df8b418 | 2676 | 3) Successful execution of set thread */ |
74531fed PA |
2677 | |
2678 | static void | |
47f8a51d | 2679 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2680 | { |
47f8a51d | 2681 | rs->general_thread = currthread; |
74531fed PA |
2682 | } |
2683 | ||
89be2091 DJ |
2684 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2685 | it can simply pass through to the inferior without reporting. */ | |
2686 | ||
f6ac5f3d | 2687 | void |
adc6a863 | 2688 | remote_target::pass_signals (gdb::array_view<const unsigned char> pass_signals) |
89be2091 | 2689 | { |
4082afcc | 2690 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2691 | { |
2692 | char *pass_packet, *p; | |
adc6a863 | 2693 | int count = 0; |
747dc59d | 2694 | struct remote_state *rs = get_remote_state (); |
89be2091 | 2695 | |
adc6a863 PA |
2696 | gdb_assert (pass_signals.size () < 256); |
2697 | for (size_t i = 0; i < pass_signals.size (); i++) | |
89be2091 | 2698 | { |
2455069d | 2699 | if (pass_signals[i]) |
89be2091 DJ |
2700 | count++; |
2701 | } | |
224c3ddb | 2702 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2703 | strcpy (pass_packet, "QPassSignals:"); |
2704 | p = pass_packet + strlen (pass_packet); | |
adc6a863 | 2705 | for (size_t i = 0; i < pass_signals.size (); i++) |
89be2091 | 2706 | { |
2455069d | 2707 | if (pass_signals[i]) |
89be2091 DJ |
2708 | { |
2709 | if (i >= 16) | |
2710 | *p++ = tohex (i >> 4); | |
2711 | *p++ = tohex (i & 15); | |
2712 | if (count) | |
2713 | *p++ = ';'; | |
2714 | else | |
2715 | break; | |
2716 | count--; | |
2717 | } | |
2718 | } | |
2719 | *p = 0; | |
747dc59d | 2720 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2721 | { |
89be2091 | 2722 | putpkt (pass_packet); |
8d64371b | 2723 | getpkt (&rs->buf, 0); |
8dc5b319 | 2724 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
84d53fa9 | 2725 | xfree (rs->last_pass_packet); |
747dc59d | 2726 | rs->last_pass_packet = pass_packet; |
89be2091 DJ |
2727 | } |
2728 | else | |
2729 | xfree (pass_packet); | |
2730 | } | |
2731 | } | |
2732 | ||
82075af2 JS |
2733 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2734 | to report syscalls to GDB. */ | |
2735 | ||
f6ac5f3d PA |
2736 | int |
2737 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2738 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2739 | { |
b80406ac | 2740 | const char *catch_packet; |
82075af2 JS |
2741 | enum packet_result result; |
2742 | int n_sysno = 0; | |
2743 | ||
2744 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2745 | { | |
2746 | /* Not supported. */ | |
2747 | return 1; | |
2748 | } | |
2749 | ||
649a140c | 2750 | if (needed && any_count == 0) |
82075af2 | 2751 | { |
649a140c PA |
2752 | /* Count how many syscalls are to be caught. */ |
2753 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2754 | { |
649a140c | 2755 | if (syscall_counts[i] != 0) |
82075af2 JS |
2756 | n_sysno++; |
2757 | } | |
2758 | } | |
2759 | ||
2189c312 SM |
2760 | remote_debug_printf ("pid %d needed %d any_count %d n_sysno %d", |
2761 | pid, needed, any_count, n_sysno); | |
82075af2 | 2762 | |
1b81856f | 2763 | std::string built_packet; |
82075af2 JS |
2764 | if (needed) |
2765 | { | |
2766 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2767 | characters for a sysno. If the resulting packet size is too | |
2768 | big, fallback on the non-selective packet. */ | |
2769 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2770 | built_packet.reserve (maxpktsz); |
2771 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2772 | if (any_count == 0) |
82075af2 | 2773 | { |
649a140c PA |
2774 | /* Add in each syscall to be caught. */ |
2775 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2776 | { |
649a140c PA |
2777 | if (syscall_counts[i] != 0) |
2778 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2779 | } |
2780 | } | |
1b81856f | 2781 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2782 | { |
2783 | /* catch_packet too big. Fallback to less efficient | |
2784 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2785 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2786 | } |
b80406ac | 2787 | else |
1b81856f | 2788 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2789 | } |
2790 | else | |
b80406ac | 2791 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2792 | |
b80406ac | 2793 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2794 | |
b80406ac | 2795 | putpkt (catch_packet); |
8d64371b | 2796 | getpkt (&rs->buf, 0); |
b80406ac TT |
2797 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); |
2798 | if (result == PACKET_OK) | |
2799 | return 0; | |
2800 | else | |
2801 | return -1; | |
82075af2 JS |
2802 | } |
2803 | ||
9b224c5e PA |
2804 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2805 | signals it should pass through to the inferior when detaching. */ | |
2806 | ||
f6ac5f3d | 2807 | void |
adc6a863 | 2808 | remote_target::program_signals (gdb::array_view<const unsigned char> signals) |
9b224c5e | 2809 | { |
4082afcc | 2810 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2811 | { |
2812 | char *packet, *p; | |
adc6a863 | 2813 | int count = 0; |
5e4a05c4 | 2814 | struct remote_state *rs = get_remote_state (); |
9b224c5e | 2815 | |
adc6a863 PA |
2816 | gdb_assert (signals.size () < 256); |
2817 | for (size_t i = 0; i < signals.size (); i++) | |
9b224c5e PA |
2818 | { |
2819 | if (signals[i]) | |
2820 | count++; | |
2821 | } | |
224c3ddb | 2822 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2823 | strcpy (packet, "QProgramSignals:"); |
2824 | p = packet + strlen (packet); | |
adc6a863 | 2825 | for (size_t i = 0; i < signals.size (); i++) |
9b224c5e PA |
2826 | { |
2827 | if (signal_pass_state (i)) | |
2828 | { | |
2829 | if (i >= 16) | |
2830 | *p++ = tohex (i >> 4); | |
2831 | *p++ = tohex (i & 15); | |
2832 | if (count) | |
2833 | *p++ = ';'; | |
2834 | else | |
2835 | break; | |
2836 | count--; | |
2837 | } | |
2838 | } | |
2839 | *p = 0; | |
5e4a05c4 TT |
2840 | if (!rs->last_program_signals_packet |
2841 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2842 | { |
9b224c5e | 2843 | putpkt (packet); |
8d64371b | 2844 | getpkt (&rs->buf, 0); |
8dc5b319 | 2845 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2846 | xfree (rs->last_program_signals_packet); |
2847 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2848 | } |
2849 | else | |
2850 | xfree (packet); | |
2851 | } | |
2852 | } | |
2853 | ||
79d7f229 PA |
2854 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2855 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2856 | thread. If GEN is set, set the general thread, if not, then set | |
2857 | the step/continue thread. */ | |
6b8edb51 PA |
2858 | void |
2859 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 2860 | { |
d01949b6 | 2861 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2862 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
8d64371b TT |
2863 | char *buf = rs->buf.data (); |
2864 | char *endbuf = buf + get_remote_packet_size (); | |
c906108c | 2865 | |
d7e15655 | 2866 | if (state == ptid) |
c906108c SS |
2867 | return; |
2868 | ||
79d7f229 PA |
2869 | *buf++ = 'H'; |
2870 | *buf++ = gen ? 'g' : 'c'; | |
d7e15655 | 2871 | if (ptid == magic_null_ptid) |
79d7f229 | 2872 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2873 | else if (ptid == any_thread_ptid) |
79d7f229 | 2874 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2875 | else if (ptid == minus_one_ptid) |
79d7f229 PA |
2876 | xsnprintf (buf, endbuf - buf, "-1"); |
2877 | else | |
82f73884 | 2878 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2879 | putpkt (rs->buf); |
8d64371b | 2880 | getpkt (&rs->buf, 0); |
c906108c | 2881 | if (gen) |
47f8a51d | 2882 | rs->general_thread = ptid; |
c906108c | 2883 | else |
47f8a51d | 2884 | rs->continue_thread = ptid; |
c906108c | 2885 | } |
79d7f229 | 2886 | |
6b8edb51 PA |
2887 | void |
2888 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
2889 | { |
2890 | set_thread (ptid, 1); | |
2891 | } | |
2892 | ||
6b8edb51 PA |
2893 | void |
2894 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
2895 | { |
2896 | set_thread (ptid, 0); | |
2897 | } | |
2898 | ||
3c9c4b83 PA |
2899 | /* Change the remote current process. Which thread within the process |
2900 | ends up selected isn't important, as long as it is the same process | |
2901 | as what INFERIOR_PTID points to. | |
2902 | ||
2903 | This comes from that fact that there is no explicit notion of | |
2904 | "selected process" in the protocol. The selected process for | |
2905 | general operations is the process the selected general thread | |
2906 | belongs to. */ | |
2907 | ||
6b8edb51 PA |
2908 | void |
2909 | remote_target::set_general_process () | |
3c9c4b83 PA |
2910 | { |
2911 | struct remote_state *rs = get_remote_state (); | |
2912 | ||
2913 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2914 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2915 | return; |
2916 | ||
2917 | /* We only need to change the remote current thread if it's pointing | |
2918 | at some other process. */ | |
e99b03dc | 2919 | if (rs->general_thread.pid () != inferior_ptid.pid ()) |
3c9c4b83 PA |
2920 | set_general_thread (inferior_ptid); |
2921 | } | |
2922 | ||
c906108c | 2923 | \f |
7d1a114c PA |
2924 | /* Return nonzero if this is the main thread that we made up ourselves |
2925 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2926 | |
2927 | static int | |
f6ac5f3d | 2928 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2929 | { |
d7e15655 | 2930 | if (ptid == magic_null_ptid) |
c0a2216e PA |
2931 | /* The main thread is always alive. */ |
2932 | return 1; | |
2933 | ||
e38504b3 | 2934 | if (ptid.pid () != 0 && ptid.lwp () == 0) |
c0a2216e PA |
2935 | /* The main thread is always alive. This can happen after a |
2936 | vAttach, if the remote side doesn't support | |
2937 | multi-threading. */ | |
2938 | return 1; | |
2939 | ||
7d1a114c PA |
2940 | return 0; |
2941 | } | |
2942 | ||
2943 | /* Return nonzero if the thread PTID is still alive on the remote | |
2944 | system. */ | |
2945 | ||
57810aa7 | 2946 | bool |
f6ac5f3d | 2947 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
2948 | { |
2949 | struct remote_state *rs = get_remote_state (); | |
2950 | char *p, *endp; | |
2951 | ||
2952 | /* Check if this is a thread that we made up ourselves to model | |
2953 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2954 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2955 | return 1; |
2956 | ||
8d64371b TT |
2957 | p = rs->buf.data (); |
2958 | endp = p + get_remote_packet_size (); | |
82f73884 PA |
2959 | |
2960 | *p++ = 'T'; | |
2961 | write_ptid (p, endp, ptid); | |
2962 | ||
2e9f7625 | 2963 | putpkt (rs->buf); |
8d64371b | 2964 | getpkt (&rs->buf, 0); |
2e9f7625 | 2965 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2966 | } |
2967 | ||
79efa585 SM |
2968 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2969 | The thread_info object owns the memory for the name. */ | |
2970 | ||
f6ac5f3d PA |
2971 | const char * |
2972 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
2973 | { |
2974 | if (info->priv != NULL) | |
a9334058 SM |
2975 | { |
2976 | const std::string &name = get_remote_thread_info (info)->name; | |
2977 | return !name.empty () ? name.c_str () : NULL; | |
2978 | } | |
79efa585 SM |
2979 | |
2980 | return NULL; | |
2981 | } | |
2982 | ||
c906108c SS |
2983 | /* About these extended threadlist and threadinfo packets. They are |
2984 | variable length packets but, the fields within them are often fixed | |
30baf67b | 2985 | length. They are redundant enough to send over UDP as is the |
c906108c SS |
2986 | remote protocol in general. There is a matching unit test module |
2987 | in libstub. */ | |
2988 | ||
23860348 | 2989 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2990 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2991 | changable. */ |
cce74817 JM |
2992 | |
2993 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2994 | Plan to fix this. */ |
cce74817 | 2995 | |
23860348 | 2996 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2997 | |
9d1f7ab2 | 2998 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2999 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
3000 | |
3001 | struct gdb_ext_thread_info | |
c5aa993b | 3002 | { |
23860348 | 3003 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 3004 | int active; /* Has state interesting to GDB? |
23860348 | 3005 | regs, stack. */ |
2bc416ba | 3006 | char display[256]; /* Brief state display, name, |
cedea757 | 3007 | blocked/suspended. */ |
23860348 | 3008 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 3009 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 3010 | whatever. */ |
c5aa993b | 3011 | }; |
cce74817 JM |
3012 | |
3013 | /* The volume of remote transfers can be limited by submitting | |
3014 | a mask containing bits specifying the desired information. | |
3015 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 3016 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
3017 | |
3018 | #define TAG_THREADID 1 | |
3019 | #define TAG_EXISTS 2 | |
3020 | #define TAG_DISPLAY 4 | |
3021 | #define TAG_THREADNAME 8 | |
c5aa993b | 3022 | #define TAG_MOREDISPLAY 16 |
cce74817 | 3023 | |
23860348 | 3024 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 3025 | |
cecb1912 | 3026 | static const char *unpack_nibble (const char *buf, int *val); |
cce74817 | 3027 | |
cecb1912 | 3028 | static const char *unpack_byte (const char *buf, int *value); |
cce74817 | 3029 | |
a14ed312 | 3030 | static char *pack_int (char *buf, int value); |
cce74817 | 3031 | |
cecb1912 | 3032 | static const char *unpack_int (const char *buf, int *value); |
cce74817 | 3033 | |
cecb1912 | 3034 | static const char *unpack_string (const char *src, char *dest, int length); |
cce74817 | 3035 | |
23860348 | 3036 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 3037 | |
cecb1912 | 3038 | static const char *unpack_threadid (const char *inbuf, threadref *id); |
cce74817 | 3039 | |
23860348 | 3040 | void int_to_threadref (threadref *id, int value); |
cce74817 | 3041 | |
23860348 | 3042 | static int threadref_to_int (threadref *ref); |
cce74817 | 3043 | |
23860348 | 3044 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 3045 | |
23860348 | 3046 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 3047 | |
2bc416ba | 3048 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 3049 | threadref *id); |
cce74817 | 3050 | |
a14ed312 KB |
3051 | static char *pack_threadlist_request (char *pkt, int startflag, |
3052 | int threadcount, | |
23860348 | 3053 | threadref *nextthread); |
cce74817 | 3054 | |
23860348 | 3055 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 3056 | |
82f73884 PA |
3057 | |
3058 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
3059 | buffer we're allowed to write to. Returns | |
3060 | BUF+CHARACTERS_WRITTEN. */ | |
3061 | ||
6b8edb51 PA |
3062 | char * |
3063 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
3064 | { |
3065 | int pid, tid; | |
3066 | struct remote_state *rs = get_remote_state (); | |
3067 | ||
3068 | if (remote_multi_process_p (rs)) | |
3069 | { | |
e99b03dc | 3070 | pid = ptid.pid (); |
82f73884 PA |
3071 | if (pid < 0) |
3072 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
3073 | else | |
3074 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
3075 | } | |
e38504b3 | 3076 | tid = ptid.lwp (); |
82f73884 PA |
3077 | if (tid < 0) |
3078 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
3079 | else | |
3080 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
3081 | ||
3082 | return buf; | |
3083 | } | |
3084 | ||
256642e8 PA |
3085 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
3086 | last parsed char. Returns null_ptid if no thread id is found, and | |
3087 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
3088 | |
3089 | static ptid_t | |
256642e8 | 3090 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 3091 | { |
256642e8 PA |
3092 | const char *p = buf; |
3093 | const char *pp; | |
82f73884 | 3094 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
3095 | |
3096 | if (*p == 'p') | |
3097 | { | |
3098 | /* Multi-process ptid. */ | |
3099 | pp = unpack_varlen_hex (p + 1, &pid); | |
3100 | if (*pp != '.') | |
b37520b6 | 3101 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
3102 | |
3103 | p = pp; | |
3104 | pp = unpack_varlen_hex (p + 1, &tid); | |
3105 | if (obuf) | |
3106 | *obuf = pp; | |
fd79271b | 3107 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3108 | } |
3109 | ||
3110 | /* No multi-process. Just a tid. */ | |
3111 | pp = unpack_varlen_hex (p, &tid); | |
3112 | ||
c9f35b34 KB |
3113 | /* Return null_ptid when no thread id is found. */ |
3114 | if (p == pp) | |
3115 | { | |
3116 | if (obuf) | |
3117 | *obuf = pp; | |
3118 | return null_ptid; | |
3119 | } | |
3120 | ||
82f73884 | 3121 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
3122 | what's in inferior_ptid, unless it's null at this point. If so, |
3123 | then since there's no way to know the pid of the reported | |
3124 | threads, use the magic number. */ | |
d7e15655 | 3125 | if (inferior_ptid == null_ptid) |
e99b03dc | 3126 | pid = magic_null_ptid.pid (); |
ca19bf23 | 3127 | else |
e99b03dc | 3128 | pid = inferior_ptid.pid (); |
82f73884 PA |
3129 | |
3130 | if (obuf) | |
3131 | *obuf = pp; | |
fd79271b | 3132 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3133 | } |
3134 | ||
c906108c | 3135 | static int |
fba45db2 | 3136 | stubhex (int ch) |
c906108c SS |
3137 | { |
3138 | if (ch >= 'a' && ch <= 'f') | |
3139 | return ch - 'a' + 10; | |
3140 | if (ch >= '0' && ch <= '9') | |
3141 | return ch - '0'; | |
3142 | if (ch >= 'A' && ch <= 'F') | |
3143 | return ch - 'A' + 10; | |
3144 | return -1; | |
3145 | } | |
3146 | ||
3147 | static int | |
cecb1912 | 3148 | stub_unpack_int (const char *buff, int fieldlength) |
c906108c SS |
3149 | { |
3150 | int nibble; | |
3151 | int retval = 0; | |
3152 | ||
3153 | while (fieldlength) | |
3154 | { | |
3155 | nibble = stubhex (*buff++); | |
3156 | retval |= nibble; | |
3157 | fieldlength--; | |
3158 | if (fieldlength) | |
3159 | retval = retval << 4; | |
3160 | } | |
3161 | return retval; | |
3162 | } | |
3163 | ||
cecb1912 SM |
3164 | static const char * |
3165 | unpack_nibble (const char *buf, int *val) | |
c906108c | 3166 | { |
b7589f7d | 3167 | *val = fromhex (*buf++); |
c906108c SS |
3168 | return buf; |
3169 | } | |
3170 | ||
cecb1912 SM |
3171 | static const char * |
3172 | unpack_byte (const char *buf, int *value) | |
c906108c SS |
3173 | { |
3174 | *value = stub_unpack_int (buf, 2); | |
3175 | return buf + 2; | |
3176 | } | |
3177 | ||
3178 | static char * | |
fba45db2 | 3179 | pack_int (char *buf, int value) |
c906108c SS |
3180 | { |
3181 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3182 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3183 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3184 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3185 | return buf; | |
3186 | } | |
3187 | ||
cecb1912 SM |
3188 | static const char * |
3189 | unpack_int (const char *buf, int *value) | |
c906108c SS |
3190 | { |
3191 | *value = stub_unpack_int (buf, 8); | |
3192 | return buf + 8; | |
3193 | } | |
3194 | ||
23860348 | 3195 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3196 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3197 | |
3198 | static char * | |
fba45db2 | 3199 | pack_string (char *pkt, char *string) |
c906108c SS |
3200 | { |
3201 | char ch; | |
3202 | int len; | |
3203 | ||
3204 | len = strlen (string); | |
3205 | if (len > 200) | |
23860348 | 3206 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3207 | pkt = pack_hex_byte (pkt, len); |
3208 | while (len-- > 0) | |
3209 | { | |
3210 | ch = *string++; | |
3211 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3212 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3213 | *pkt++ = ch; |
3214 | } | |
3215 | return pkt; | |
3216 | } | |
3217 | #endif /* 0 (unused) */ | |
3218 | ||
cecb1912 SM |
3219 | static const char * |
3220 | unpack_string (const char *src, char *dest, int length) | |
c906108c SS |
3221 | { |
3222 | while (length--) | |
3223 | *dest++ = *src++; | |
3224 | *dest = '\0'; | |
3225 | return src; | |
3226 | } | |
3227 | ||
3228 | static char * | |
fba45db2 | 3229 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3230 | { |
3231 | char *limit; | |
3232 | unsigned char *altid; | |
3233 | ||
3234 | altid = (unsigned char *) id; | |
3235 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3236 | while (pkt < limit) | |
3237 | pkt = pack_hex_byte (pkt, *altid++); | |
3238 | return pkt; | |
3239 | } | |
3240 | ||
3241 | ||
cecb1912 SM |
3242 | static const char * |
3243 | unpack_threadid (const char *inbuf, threadref *id) | |
c906108c SS |
3244 | { |
3245 | char *altref; | |
cecb1912 | 3246 | const char *limit = inbuf + BUF_THREAD_ID_SIZE; |
c906108c SS |
3247 | int x, y; |
3248 | ||
3249 | altref = (char *) id; | |
3250 | ||
3251 | while (inbuf < limit) | |
3252 | { | |
3253 | x = stubhex (*inbuf++); | |
3254 | y = stubhex (*inbuf++); | |
3255 | *altref++ = (x << 4) | y; | |
3256 | } | |
3257 | return inbuf; | |
3258 | } | |
3259 | ||
3260 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3261 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3262 | to use 64bit thread references internally. This is an adapter |
3263 | function. */ | |
3264 | ||
3265 | void | |
fba45db2 | 3266 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3267 | { |
3268 | unsigned char *scan; | |
3269 | ||
3270 | scan = (unsigned char *) id; | |
3271 | { | |
3272 | int i = 4; | |
3273 | while (i--) | |
3274 | *scan++ = 0; | |
3275 | } | |
3276 | *scan++ = (value >> 24) & 0xff; | |
3277 | *scan++ = (value >> 16) & 0xff; | |
3278 | *scan++ = (value >> 8) & 0xff; | |
3279 | *scan++ = (value & 0xff); | |
3280 | } | |
3281 | ||
3282 | static int | |
fba45db2 | 3283 | threadref_to_int (threadref *ref) |
c906108c SS |
3284 | { |
3285 | int i, value = 0; | |
3286 | unsigned char *scan; | |
3287 | ||
cfd77fa1 | 3288 | scan = *ref; |
c906108c SS |
3289 | scan += 4; |
3290 | i = 4; | |
3291 | while (i-- > 0) | |
3292 | value = (value << 8) | ((*scan++) & 0xff); | |
3293 | return value; | |
3294 | } | |
3295 | ||
3296 | static void | |
fba45db2 | 3297 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3298 | { |
3299 | int i; | |
3300 | unsigned char *csrc, *cdest; | |
3301 | ||
3302 | csrc = (unsigned char *) src; | |
3303 | cdest = (unsigned char *) dest; | |
3304 | i = 8; | |
3305 | while (i--) | |
3306 | *cdest++ = *csrc++; | |
3307 | } | |
3308 | ||
3309 | static int | |
fba45db2 | 3310 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3311 | { |
23860348 | 3312 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3313 | #if 0 |
3314 | unsigned char *srcp, *destp; | |
3315 | int i, result; | |
3316 | srcp = (char *) src; | |
3317 | destp = (char *) dest; | |
3318 | ||
3319 | result = 1; | |
3320 | while (i-- > 0) | |
3321 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3322 | return result; | |
3323 | #endif | |
3324 | return 1; | |
3325 | } | |
3326 | ||
3327 | /* | |
c5aa993b JM |
3328 | threadid:1, # always request threadid |
3329 | context_exists:2, | |
3330 | display:4, | |
3331 | unique_name:8, | |
3332 | more_display:16 | |
3333 | */ | |
c906108c SS |
3334 | |
3335 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3336 | ||
3337 | static char * | |
fba45db2 | 3338 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3339 | { |
23860348 MS |
3340 | *pkt++ = 'q'; /* Info Query */ |
3341 | *pkt++ = 'P'; /* process or thread info */ | |
3342 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3343 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3344 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3345 | return pkt; |
3346 | } | |
3347 | ||
23860348 | 3348 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3349 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3350 | add more fields as time goes by. */ |
c906108c | 3351 | |
23860348 | 3352 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3353 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3354 | fetch registers and its stack? */ |
c5aa993b | 3355 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3356 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3357 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3358 | the process. */ |
c906108c | 3359 | |
6b8edb51 | 3360 | int |
cecb1912 | 3361 | remote_target::remote_unpack_thread_info_response (const char *pkt, |
6b8edb51 PA |
3362 | threadref *expectedref, |
3363 | gdb_ext_thread_info *info) | |
c906108c | 3364 | { |
d01949b6 | 3365 | struct remote_state *rs = get_remote_state (); |
c906108c | 3366 | int mask, length; |
cfd77fa1 | 3367 | int tag; |
c906108c | 3368 | threadref ref; |
cecb1912 | 3369 | const char *limit = pkt + rs->buf.size (); /* Plausible parsing limit. */ |
c906108c SS |
3370 | int retval = 1; |
3371 | ||
23860348 | 3372 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3373 | info->active = 0; |
3374 | info->display[0] = '\0'; | |
3375 | info->shortname[0] = '\0'; | |
3376 | info->more_display[0] = '\0'; | |
3377 | ||
23860348 MS |
3378 | /* Assume the characters indicating the packet type have been |
3379 | stripped. */ | |
c906108c SS |
3380 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3381 | pkt = unpack_threadid (pkt, &ref); | |
3382 | ||
3383 | if (mask == 0) | |
8a3fe4f8 | 3384 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3385 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3386 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3387 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3388 | return 0; |
3389 | } | |
3390 | copy_threadref (&info->threadid, &ref); | |
3391 | ||
405feb71 | 3392 | /* Loop on tagged fields , try to bail if something goes wrong. */ |
c906108c | 3393 | |
23860348 MS |
3394 | /* Packets are terminated with nulls. */ |
3395 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3396 | { |
3397 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3398 | pkt = unpack_byte (pkt, &length); /* length */ |
3399 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3400 | { |
8a3fe4f8 | 3401 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3402 | retval = 0; |
3403 | break; | |
3404 | } | |
3405 | if (tag == TAG_THREADID) | |
3406 | { | |
3407 | if (length != 16) | |
3408 | { | |
8a3fe4f8 | 3409 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3410 | retval = 0; |
3411 | break; | |
3412 | } | |
3413 | pkt = unpack_threadid (pkt, &ref); | |
3414 | mask = mask & ~TAG_THREADID; | |
3415 | continue; | |
3416 | } | |
3417 | if (tag == TAG_EXISTS) | |
3418 | { | |
3419 | info->active = stub_unpack_int (pkt, length); | |
3420 | pkt += length; | |
3421 | mask = mask & ~(TAG_EXISTS); | |
3422 | if (length > 8) | |
3423 | { | |
8a3fe4f8 | 3424 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3425 | retval = 0; |
3426 | break; | |
3427 | } | |
3428 | continue; | |
3429 | } | |
3430 | if (tag == TAG_THREADNAME) | |
3431 | { | |
3432 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3433 | mask = mask & ~TAG_THREADNAME; | |
3434 | continue; | |
3435 | } | |
3436 | if (tag == TAG_DISPLAY) | |
3437 | { | |
3438 | pkt = unpack_string (pkt, &info->display[0], length); | |
3439 | mask = mask & ~TAG_DISPLAY; | |
3440 | continue; | |
3441 | } | |
3442 | if (tag == TAG_MOREDISPLAY) | |
3443 | { | |
3444 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3445 | mask = mask & ~TAG_MOREDISPLAY; | |
3446 | continue; | |
3447 | } | |
8a3fe4f8 | 3448 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3449 | break; /* Not a tag we know about. */ |
c906108c SS |
3450 | } |
3451 | return retval; | |
3452 | } | |
3453 | ||
6b8edb51 PA |
3454 | int |
3455 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3456 | int fieldset, | |
3457 | gdb_ext_thread_info *info) | |
c906108c | 3458 | { |
d01949b6 | 3459 | struct remote_state *rs = get_remote_state (); |
c906108c | 3460 | int result; |
c906108c | 3461 | |
8d64371b | 3462 | pack_threadinfo_request (rs->buf.data (), fieldset, threadid); |
2e9f7625 | 3463 | putpkt (rs->buf); |
8d64371b | 3464 | getpkt (&rs->buf, 0); |
3084dd77 PA |
3465 | |
3466 | if (rs->buf[0] == '\0') | |
3467 | return 0; | |
3468 | ||
8d64371b | 3469 | result = remote_unpack_thread_info_response (&rs->buf[2], |
23860348 | 3470 | threadid, info); |
c906108c SS |
3471 | return result; |
3472 | } | |
3473 | ||
c906108c SS |
3474 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3475 | ||
3476 | static char * | |
fba45db2 KB |
3477 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3478 | threadref *nextthread) | |
c906108c SS |
3479 | { |
3480 | *pkt++ = 'q'; /* info query packet */ | |
3481 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3482 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3483 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3484 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3485 | *pkt = '\0'; | |
3486 | return pkt; | |
3487 | } | |
3488 | ||
3489 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3490 | ||
6b8edb51 | 3491 | int |
cecb1912 | 3492 | remote_target::parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
3493 | threadref *original_echo, |
3494 | threadref *resultlist, | |
3495 | int *doneflag) | |
c906108c | 3496 | { |
d01949b6 | 3497 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3498 | int count, resultcount, done; |
3499 | ||
3500 | resultcount = 0; | |
3501 | /* Assume the 'q' and 'M chars have been stripped. */ | |
cecb1912 | 3502 | const char *limit = pkt + (rs->buf.size () - BUF_THREAD_ID_SIZE); |
23860348 | 3503 | /* done parse past here */ |
c906108c SS |
3504 | pkt = unpack_byte (pkt, &count); /* count field */ |
3505 | pkt = unpack_nibble (pkt, &done); | |
3506 | /* The first threadid is the argument threadid. */ | |
3507 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3508 | while ((count-- > 0) && (pkt < limit)) | |
3509 | { | |
3510 | pkt = unpack_threadid (pkt, resultlist++); | |
3511 | if (resultcount++ >= result_limit) | |
3512 | break; | |
3513 | } | |
3514 | if (doneflag) | |
3515 | *doneflag = done; | |
3516 | return resultcount; | |
3517 | } | |
3518 | ||
6dc54d91 PA |
3519 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3520 | qL packet is not supported, 0 on error and 1 on success. */ | |
3521 | ||
6b8edb51 PA |
3522 | int |
3523 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3524 | int result_limit, int *done, int *result_count, | |
3525 | threadref *threadlist) | |
c906108c | 3526 | { |
d01949b6 | 3527 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3528 | int result = 1; |
3529 | ||
405feb71 | 3530 | /* Truncate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3531 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3532 | >= get_remote_packet_size ()) | |
ea9c271d | 3533 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3534 | |
8d64371b TT |
3535 | pack_threadlist_request (rs->buf.data (), startflag, result_limit, |
3536 | nextthread); | |
6d820c5c | 3537 | putpkt (rs->buf); |
8d64371b TT |
3538 | getpkt (&rs->buf, 0); |
3539 | if (rs->buf[0] == '\0') | |
6dc54d91 PA |
3540 | { |
3541 | /* Packet not supported. */ | |
3542 | return -1; | |
3543 | } | |
3544 | ||
3545 | *result_count = | |
8d64371b | 3546 | parse_threadlist_response (&rs->buf[2], result_limit, |
6dc54d91 | 3547 | &rs->echo_nextthread, threadlist, done); |
c906108c | 3548 | |
0d031856 | 3549 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3550 | { |
23860348 | 3551 | /* FIXME: This is a good reason to drop the packet. */ |
405feb71 TV |
3552 | /* Possibly, there is a duplicate response. */ |
3553 | /* Possibilities : | |
dda83cd7 SM |
3554 | retransmit immediatly - race conditions |
3555 | retransmit after timeout - yes | |
3556 | exit | |
3557 | wait for packet, then exit | |
c906108c | 3558 | */ |
8a3fe4f8 | 3559 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3560 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3561 | } |
3562 | if (*result_count <= 0) | |
3563 | { | |
3564 | if (*done != 1) | |
3565 | { | |
8a3fe4f8 | 3566 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3567 | result = 0; |
3568 | } | |
3569 | return result; /* break; */ | |
3570 | } | |
3571 | if (*result_count > result_limit) | |
3572 | { | |
3573 | *result_count = 0; | |
8a3fe4f8 | 3574 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3575 | return 0; |
3576 | } | |
3577 | return result; | |
3578 | } | |
3579 | ||
6dc54d91 PA |
3580 | /* Fetch the list of remote threads, with the qL packet, and call |
3581 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3582 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3583 | STEPFUNCTION returns false. If the packet is not supported, | |
3584 | returns -1. */ | |
c906108c | 3585 | |
6b8edb51 PA |
3586 | int |
3587 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3588 | void *context, int looplimit) | |
c906108c | 3589 | { |
0d031856 | 3590 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3591 | int done, i, result_count; |
3592 | int startflag = 1; | |
3593 | int result = 1; | |
3594 | int loopcount = 0; | |
c906108c SS |
3595 | |
3596 | done = 0; | |
3597 | while (!done) | |
3598 | { | |
3599 | if (loopcount++ > looplimit) | |
3600 | { | |
3601 | result = 0; | |
8a3fe4f8 | 3602 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3603 | break; |
3604 | } | |
6dc54d91 PA |
3605 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3606 | MAXTHREADLISTRESULTS, | |
3607 | &done, &result_count, | |
3608 | rs->resultthreadlist); | |
3609 | if (result <= 0) | |
3610 | break; | |
23860348 | 3611 | /* Clear for later iterations. */ |
c906108c SS |
3612 | startflag = 0; |
3613 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3614 | if (result_count >= 1) | |
0d031856 TT |
3615 | copy_threadref (&rs->nextthread, |
3616 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3617 | i = 0; |
3618 | while (result_count--) | |
6dc54d91 PA |
3619 | { |
3620 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3621 | { | |
3622 | result = 0; | |
3623 | break; | |
3624 | } | |
3625 | } | |
c906108c SS |
3626 | } |
3627 | return result; | |
3628 | } | |
3629 | ||
6dc54d91 PA |
3630 | /* A thread found on the remote target. */ |
3631 | ||
21fe1c75 | 3632 | struct thread_item |
6dc54d91 | 3633 | { |
21fe1c75 SM |
3634 | explicit thread_item (ptid_t ptid_) |
3635 | : ptid (ptid_) | |
3636 | {} | |
3637 | ||
3638 | thread_item (thread_item &&other) = default; | |
3639 | thread_item &operator= (thread_item &&other) = default; | |
3640 | ||
3641 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3642 | ||
6dc54d91 PA |
3643 | /* The thread's PTID. */ |
3644 | ptid_t ptid; | |
3645 | ||
21fe1c75 SM |
3646 | /* The thread's extra info. */ |
3647 | std::string extra; | |
6dc54d91 | 3648 | |
21fe1c75 SM |
3649 | /* The thread's name. */ |
3650 | std::string name; | |
79efa585 | 3651 | |
6dc54d91 | 3652 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3653 | int core = -1; |
f6327dcb KB |
3654 | |
3655 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3656 | gdb::byte_vector thread_handle; |
21fe1c75 | 3657 | }; |
6dc54d91 PA |
3658 | |
3659 | /* Context passed around to the various methods listing remote | |
3660 | threads. As new threads are found, they're added to the ITEMS | |
3661 | vector. */ | |
3662 | ||
3663 | struct threads_listing_context | |
3664 | { | |
21fe1c75 SM |
3665 | /* Return true if this object contains an entry for a thread with ptid |
3666 | PTID. */ | |
6dc54d91 | 3667 | |
21fe1c75 SM |
3668 | bool contains_thread (ptid_t ptid) const |
3669 | { | |
3670 | auto match_ptid = [&] (const thread_item &item) | |
3671 | { | |
3672 | return item.ptid == ptid; | |
3673 | }; | |
80134cf5 | 3674 | |
21fe1c75 SM |
3675 | auto it = std::find_if (this->items.begin (), |
3676 | this->items.end (), | |
3677 | match_ptid); | |
80134cf5 | 3678 | |
21fe1c75 SM |
3679 | return it != this->items.end (); |
3680 | } | |
80134cf5 | 3681 | |
21fe1c75 | 3682 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3683 | |
21fe1c75 SM |
3684 | void remove_thread (ptid_t ptid) |
3685 | { | |
3686 | auto match_ptid = [&] (const thread_item &item) | |
3687 | { | |
dda83cd7 | 3688 | return item.ptid == ptid; |
21fe1c75 | 3689 | }; |
cbb8991c | 3690 | |
21fe1c75 SM |
3691 | auto it = std::remove_if (this->items.begin (), |
3692 | this->items.end (), | |
3693 | match_ptid); | |
cbb8991c | 3694 | |
21fe1c75 SM |
3695 | if (it != this->items.end ()) |
3696 | this->items.erase (it); | |
3697 | } | |
3698 | ||
3699 | /* The threads found on the remote target. */ | |
3700 | std::vector<thread_item> items; | |
3701 | }; | |
cbb8991c | 3702 | |
c906108c | 3703 | static int |
6dc54d91 | 3704 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3705 | { |
19ba03f4 SM |
3706 | struct threads_listing_context *context |
3707 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3708 | int pid = inferior_ptid.pid (); |
3709 | int lwp = threadref_to_int (ref); | |
3710 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3711 | |
21fe1c75 | 3712 | context->items.emplace_back (ptid); |
6dc54d91 | 3713 | |
c906108c SS |
3714 | return 1; /* continue iterator */ |
3715 | } | |
3716 | ||
3717 | #define CRAZY_MAX_THREADS 1000 | |
3718 | ||
6b8edb51 PA |
3719 | ptid_t |
3720 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3721 | { |
d01949b6 | 3722 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3723 | |
3724 | putpkt ("qC"); | |
8d64371b | 3725 | getpkt (&rs->buf, 0); |
2e9f7625 | 3726 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3727 | { |
256642e8 | 3728 | const char *obuf; |
c9f35b34 KB |
3729 | ptid_t result; |
3730 | ||
3731 | result = read_ptid (&rs->buf[2], &obuf); | |
2189c312 SM |
3732 | if (*obuf != '\0') |
3733 | remote_debug_printf ("warning: garbage in qC reply"); | |
c9f35b34 KB |
3734 | |
3735 | return result; | |
3736 | } | |
c906108c SS |
3737 | else |
3738 | return oldpid; | |
3739 | } | |
3740 | ||
6dc54d91 | 3741 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3742 | |
6b8edb51 PA |
3743 | int |
3744 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3745 | { |
6dc54d91 PA |
3746 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3747 | CRAZY_MAX_THREADS) >= 0) | |
3748 | return 1; | |
3749 | ||
3750 | return 0; | |
c906108c SS |
3751 | } |
3752 | ||
dc146f7c VP |
3753 | #if defined(HAVE_LIBEXPAT) |
3754 | ||
dc146f7c VP |
3755 | static void |
3756 | start_thread (struct gdb_xml_parser *parser, | |
3757 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3758 | void *user_data, |
3759 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3760 | { |
19ba03f4 SM |
3761 | struct threads_listing_context *data |
3762 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3763 | struct gdb_xml_value *attr; |
dc146f7c | 3764 | |
4d0fdd9b | 3765 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3766 | ptid_t ptid = read_ptid (id, NULL); |
3767 | ||
3768 | data->items.emplace_back (ptid); | |
3769 | thread_item &item = data->items.back (); | |
dc146f7c | 3770 | |
3d2c1d41 PA |
3771 | attr = xml_find_attribute (attributes, "core"); |
3772 | if (attr != NULL) | |
4d0fdd9b | 3773 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3774 | |
79efa585 | 3775 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3776 | if (attr != NULL) |
4d0fdd9b | 3777 | item.name = (const char *) attr->value.get (); |
79efa585 | 3778 | |
f6327dcb KB |
3779 | attr = xml_find_attribute (attributes, "handle"); |
3780 | if (attr != NULL) | |
4d0fdd9b | 3781 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3782 | } |
3783 | ||
3784 | static void | |
3785 | end_thread (struct gdb_xml_parser *parser, | |
3786 | const struct gdb_xml_element *element, | |
3787 | void *user_data, const char *body_text) | |
3788 | { | |
19ba03f4 SM |
3789 | struct threads_listing_context *data |
3790 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3791 | |
21fe1c75 SM |
3792 | if (body_text != NULL && *body_text != '\0') |
3793 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3794 | } |
3795 | ||
3796 | const struct gdb_xml_attribute thread_attributes[] = { | |
3797 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3798 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3799 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3800 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3801 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3802 | }; | |
3803 | ||
3804 | const struct gdb_xml_element thread_children[] = { | |
3805 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3806 | }; | |
3807 | ||
3808 | const struct gdb_xml_element threads_children[] = { | |
3809 | { "thread", thread_attributes, thread_children, | |
3810 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3811 | start_thread, end_thread }, | |
3812 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3813 | }; | |
3814 | ||
3815 | const struct gdb_xml_element threads_elements[] = { | |
3816 | { "threads", NULL, threads_children, | |
3817 | GDB_XML_EF_NONE, NULL, NULL }, | |
3818 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3819 | }; | |
3820 | ||
3821 | #endif | |
3822 | ||
6dc54d91 | 3823 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3824 | |
6b8edb51 PA |
3825 | int |
3826 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 3827 | { |
dc146f7c | 3828 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3829 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3830 | { |
9018be22 | 3831 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 3832 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3833 | |
9018be22 | 3834 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3835 | { |
6dc54d91 | 3836 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3837 | threads_elements, xml->data (), context); |
dc146f7c VP |
3838 | } |
3839 | ||
6dc54d91 | 3840 | return 1; |
dc146f7c VP |
3841 | } |
3842 | #endif | |
3843 | ||
6dc54d91 PA |
3844 | return 0; |
3845 | } | |
3846 | ||
3847 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3848 | ||
6b8edb51 PA |
3849 | int |
3850 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
3851 | { |
3852 | struct remote_state *rs = get_remote_state (); | |
3853 | ||
b80fafe3 | 3854 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3855 | { |
256642e8 | 3856 | const char *bufp; |
6dc54d91 | 3857 | |
9d1f7ab2 | 3858 | putpkt ("qfThreadInfo"); |
8d64371b TT |
3859 | getpkt (&rs->buf, 0); |
3860 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3861 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3862 | { |
9d1f7ab2 MS |
3863 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3864 | { | |
3865 | do | |
3866 | { | |
21fe1c75 SM |
3867 | ptid_t ptid = read_ptid (bufp, &bufp); |
3868 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3869 | } |
3870 | while (*bufp++ == ','); /* comma-separated list */ | |
3871 | putpkt ("qsThreadInfo"); | |
8d64371b TT |
3872 | getpkt (&rs->buf, 0); |
3873 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3874 | } |
6dc54d91 PA |
3875 | return 1; |
3876 | } | |
3877 | else | |
3878 | { | |
3879 | /* Packet not recognized. */ | |
3880 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3881 | } |
3882 | } | |
3883 | ||
6dc54d91 PA |
3884 | return 0; |
3885 | } | |
3886 | ||
a05575d3 TBA |
3887 | /* Return true if INF only has one non-exited thread. */ |
3888 | ||
3889 | static bool | |
3890 | has_single_non_exited_thread (inferior *inf) | |
3891 | { | |
3892 | int count = 0; | |
3893 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) | |
3894 | if (++count > 1) | |
3895 | break; | |
3896 | return count == 1; | |
3897 | } | |
3898 | ||
e8032dde | 3899 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3900 | targets. */ |
3901 | ||
f6ac5f3d PA |
3902 | void |
3903 | remote_target::update_thread_list () | |
6dc54d91 | 3904 | { |
6dc54d91 | 3905 | struct threads_listing_context context; |
ab970af1 | 3906 | int got_list = 0; |
e8032dde | 3907 | |
6dc54d91 PA |
3908 | /* We have a few different mechanisms to fetch the thread list. Try |
3909 | them all, starting with the most preferred one first, falling | |
3910 | back to older methods. */ | |
6b8edb51 PA |
3911 | if (remote_get_threads_with_qxfer (&context) |
3912 | || remote_get_threads_with_qthreadinfo (&context) | |
3913 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 3914 | { |
ab970af1 PA |
3915 | got_list = 1; |
3916 | ||
21fe1c75 | 3917 | if (context.items.empty () |
f6ac5f3d | 3918 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3919 | { |
3920 | /* Some targets don't really support threads, but still | |
3921 | reply an (empty) thread list in response to the thread | |
3922 | listing packets, instead of replying "packet not | |
3923 | supported". Exit early so we don't delete the main | |
3924 | thread. */ | |
7d1a114c PA |
3925 | return; |
3926 | } | |
3927 | ||
ab970af1 PA |
3928 | /* CONTEXT now holds the current thread list on the remote |
3929 | target end. Delete GDB-side threads no longer found on the | |
3930 | target. */ | |
08036331 | 3931 | for (thread_info *tp : all_threads_safe ()) |
cbb8991c | 3932 | { |
5b6d1e4f PA |
3933 | if (tp->inf->process_target () != this) |
3934 | continue; | |
3935 | ||
21fe1c75 | 3936 | if (!context.contains_thread (tp->ptid)) |
ab970af1 | 3937 | { |
a05575d3 TBA |
3938 | /* Do not remove the thread if it is the last thread in |
3939 | the inferior. This situation happens when we have a | |
3940 | pending exit process status to process. Otherwise we | |
3941 | may end up with a seemingly live inferior (i.e. pid | |
3942 | != 0) that has no threads. */ | |
3943 | if (has_single_non_exited_thread (tp->inf)) | |
3944 | continue; | |
3945 | ||
ab970af1 | 3946 | /* Not found. */ |
00431a78 | 3947 | delete_thread (tp); |
ab970af1 | 3948 | } |
cbb8991c DB |
3949 | } |
3950 | ||
3951 | /* Remove any unreported fork child threads from CONTEXT so | |
3952 | that we don't interfere with follow fork, which is where | |
3953 | creation of such threads is handled. */ | |
3954 | remove_new_fork_children (&context); | |
74531fed | 3955 | |
ab970af1 | 3956 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3957 | for (thread_item &item : context.items) |
6dc54d91 | 3958 | { |
21fe1c75 | 3959 | if (item.ptid != null_ptid) |
6dc54d91 | 3960 | { |
6dc54d91 | 3961 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3962 | executing until proven otherwise with a stop reply. |
3963 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3964 | stopped. */ |
8a82de58 | 3965 | bool executing = target_is_non_stop_p (); |
6dc54d91 | 3966 | |
21fe1c75 | 3967 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3968 | |
5b6d1e4f | 3969 | thread_info *tp = find_thread_ptid (this, item.ptid); |
00431a78 | 3970 | remote_thread_info *info = get_remote_thread_info (tp); |
21fe1c75 | 3971 | info->core = item.core; |
7aabaf9d SM |
3972 | info->extra = std::move (item.extra); |
3973 | info->name = std::move (item.name); | |
3974 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3975 | } |
3976 | } | |
3977 | } | |
3978 | ||
ab970af1 PA |
3979 | if (!got_list) |
3980 | { | |
3981 | /* If no thread listing method is supported, then query whether | |
3982 | each known thread is alive, one by one, with the T packet. | |
3983 | If the target doesn't support threads at all, then this is a | |
3984 | no-op. See remote_thread_alive. */ | |
3985 | prune_threads (); | |
3986 | } | |
9d1f7ab2 MS |
3987 | } |
3988 | ||
802188a7 | 3989 | /* |
9d1f7ab2 MS |
3990 | * Collect a descriptive string about the given thread. |
3991 | * The target may say anything it wants to about the thread | |
3992 | * (typically info about its blocked / runnable state, name, etc.). | |
3993 | * This string will appear in the info threads display. | |
802188a7 | 3994 | * |
9d1f7ab2 MS |
3995 | * Optional: targets are not required to implement this function. |
3996 | */ | |
3997 | ||
f6ac5f3d PA |
3998 | const char * |
3999 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 4000 | { |
d01949b6 | 4001 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
4002 | int set; |
4003 | threadref id; | |
4004 | struct gdb_ext_thread_info threadinfo; | |
9d1f7ab2 | 4005 | |
5d93a237 | 4006 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 4007 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4008 | _("remote_threads_extra_info")); |
9d1f7ab2 | 4009 | |
d7e15655 | 4010 | if (tp->ptid == magic_null_ptid |
e38504b3 | 4011 | || (tp->ptid.pid () != 0 && tp->ptid.lwp () == 0)) |
60e569b9 PA |
4012 | /* This is the main thread which was added by GDB. The remote |
4013 | server doesn't know about it. */ | |
4014 | return NULL; | |
4015 | ||
c76a8ea3 PA |
4016 | std::string &extra = get_remote_thread_info (tp)->extra; |
4017 | ||
4018 | /* If already have cached info, use it. */ | |
4019 | if (!extra.empty ()) | |
4020 | return extra.c_str (); | |
4021 | ||
4082afcc | 4022 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 4023 | { |
c76a8ea3 PA |
4024 | /* If we're using qXfer:threads:read, then the extra info is |
4025 | included in the XML. So if we didn't have anything cached, | |
4026 | it's because there's really no extra info. */ | |
4027 | return NULL; | |
dc146f7c VP |
4028 | } |
4029 | ||
b80fafe3 | 4030 | if (rs->use_threadextra_query) |
9d1f7ab2 | 4031 | { |
8d64371b TT |
4032 | char *b = rs->buf.data (); |
4033 | char *endb = b + get_remote_packet_size (); | |
82f73884 PA |
4034 | |
4035 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
4036 | b += strlen (b); | |
4037 | write_ptid (b, endb, tp->ptid); | |
4038 | ||
2e9f7625 | 4039 | putpkt (rs->buf); |
8d64371b | 4040 | getpkt (&rs->buf, 0); |
2e9f7625 | 4041 | if (rs->buf[0] != 0) |
9d1f7ab2 | 4042 | { |
8d64371b TT |
4043 | extra.resize (strlen (rs->buf.data ()) / 2); |
4044 | hex2bin (rs->buf.data (), (gdb_byte *) &extra[0], extra.size ()); | |
c76a8ea3 | 4045 | return extra.c_str (); |
9d1f7ab2 | 4046 | } |
0f71a2f6 | 4047 | } |
9d1f7ab2 MS |
4048 | |
4049 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 4050 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
4051 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
4052 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
e38504b3 | 4053 | int_to_threadref (&id, tp->ptid.lwp ()); |
9d1f7ab2 MS |
4054 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
4055 | if (threadinfo.active) | |
0f71a2f6 | 4056 | { |
9d1f7ab2 | 4057 | if (*threadinfo.shortname) |
c76a8ea3 | 4058 | string_appendf (extra, " Name: %s", threadinfo.shortname); |
9d1f7ab2 | 4059 | if (*threadinfo.display) |
c76a8ea3 PA |
4060 | { |
4061 | if (!extra.empty ()) | |
4062 | extra += ','; | |
4063 | string_appendf (extra, " State: %s", threadinfo.display); | |
4064 | } | |
9d1f7ab2 | 4065 | if (*threadinfo.more_display) |
c5aa993b | 4066 | { |
c76a8ea3 PA |
4067 | if (!extra.empty ()) |
4068 | extra += ','; | |
4069 | string_appendf (extra, " Priority: %s", threadinfo.more_display); | |
c5aa993b | 4070 | } |
c76a8ea3 | 4071 | return extra.c_str (); |
0f71a2f6 | 4072 | } |
9d1f7ab2 | 4073 | return NULL; |
0f71a2f6 | 4074 | } |
c906108c | 4075 | \f |
c5aa993b | 4076 | |
f6ac5f3d PA |
4077 | bool |
4078 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
4079 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
4080 | { |
4081 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 4082 | char *p = rs->buf.data (); |
0fb4aa4b | 4083 | |
bba74b36 | 4084 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
4085 | p += strlen (p); |
4086 | p += hexnumstr (p, addr); | |
4087 | putpkt (rs->buf); | |
8d64371b TT |
4088 | getpkt (&rs->buf, 0); |
4089 | p = rs->buf.data (); | |
0fb4aa4b PA |
4090 | |
4091 | if (*p == 'E') | |
4092 | error (_("Remote failure reply: %s"), p); | |
4093 | ||
4094 | if (*p++ == 'm') | |
4095 | { | |
256642e8 | 4096 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 4097 | return true; |
0fb4aa4b PA |
4098 | } |
4099 | ||
5d9310c4 | 4100 | return false; |
0fb4aa4b PA |
4101 | } |
4102 | ||
f6ac5f3d PA |
4103 | std::vector<static_tracepoint_marker> |
4104 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
4105 | { |
4106 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 4107 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 4108 | const char *p; |
5d9310c4 | 4109 | static_tracepoint_marker marker; |
0fb4aa4b PA |
4110 | |
4111 | /* Ask for a first packet of static tracepoint marker | |
4112 | definition. */ | |
4113 | putpkt ("qTfSTM"); | |
8d64371b TT |
4114 | getpkt (&rs->buf, 0); |
4115 | p = rs->buf.data (); | |
0fb4aa4b PA |
4116 | if (*p == 'E') |
4117 | error (_("Remote failure reply: %s"), p); | |
4118 | ||
0fb4aa4b PA |
4119 | while (*p++ == 'm') |
4120 | { | |
0fb4aa4b PA |
4121 | do |
4122 | { | |
5d9310c4 | 4123 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 4124 | |
5d9310c4 SM |
4125 | if (strid == NULL || marker.str_id == strid) |
4126 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
4127 | } |
4128 | while (*p++ == ','); /* comma-separated list */ | |
4129 | /* Ask for another packet of static tracepoint definition. */ | |
4130 | putpkt ("qTsSTM"); | |
8d64371b TT |
4131 | getpkt (&rs->buf, 0); |
4132 | p = rs->buf.data (); | |
0fb4aa4b PA |
4133 | } |
4134 | ||
0fb4aa4b PA |
4135 | return markers; |
4136 | } | |
4137 | ||
4138 | \f | |
10760264 JB |
4139 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
4140 | ||
f6ac5f3d PA |
4141 | ptid_t |
4142 | remote_target::get_ada_task_ptid (long lwp, long thread) | |
10760264 | 4143 | { |
e99b03dc | 4144 | return ptid_t (inferior_ptid.pid (), lwp, 0); |
10760264 JB |
4145 | } |
4146 | \f | |
4147 | ||
24b06219 | 4148 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 4149 | |
6b8edb51 PA |
4150 | void |
4151 | remote_target::extended_remote_restart () | |
c906108c | 4152 | { |
d01949b6 | 4153 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4154 | |
4155 | /* Send the restart command; for reasons I don't understand the | |
4156 | remote side really expects a number after the "R". */ | |
8d64371b | 4157 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "R%x", 0); |
6d820c5c | 4158 | putpkt (rs->buf); |
c906108c | 4159 | |
ad9a8f3f | 4160 | remote_fileio_reset (); |
c906108c SS |
4161 | } |
4162 | \f | |
4163 | /* Clean up connection to a remote debugger. */ | |
4164 | ||
f6ac5f3d PA |
4165 | void |
4166 | remote_target::close () | |
c906108c | 4167 | { |
048094ac | 4168 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4169 | terminal_ours (); |
ce5ce7ed | 4170 | |
6b8edb51 PA |
4171 | trace_reset_local_state (); |
4172 | ||
4173 | delete this; | |
4174 | } | |
4175 | ||
4176 | remote_target::~remote_target () | |
4177 | { | |
4178 | struct remote_state *rs = get_remote_state (); | |
4179 | ||
4180 | /* Check for NULL because we may get here with a partially | |
4181 | constructed target/connection. */ | |
4182 | if (rs->remote_desc == nullptr) | |
4183 | return; | |
4184 | ||
4185 | serial_close (rs->remote_desc); | |
4186 | ||
4187 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4188 | everything of this target. */ |
6b8edb51 | 4189 | discard_pending_stop_replies_in_queue (); |
74531fed | 4190 | |
6b8edb51 PA |
4191 | if (rs->remote_async_inferior_event_token) |
4192 | delete_async_event_handler (&rs->remote_async_inferior_event_token); | |
722247f1 | 4193 | |
97dfbadd | 4194 | delete rs->notif_state; |
c906108c SS |
4195 | } |
4196 | ||
23860348 | 4197 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4198 | |
6b8edb51 PA |
4199 | void |
4200 | remote_target::get_offsets () | |
c906108c | 4201 | { |
d01949b6 | 4202 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4203 | char *buf; |
085dd6e6 | 4204 | char *ptr; |
31d99776 DJ |
4205 | int lose, num_segments = 0, do_sections, do_segments; |
4206 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
31d99776 | 4207 | |
a42d7dd8 | 4208 | if (current_program_space->symfile_object_file == NULL) |
31d99776 | 4209 | return; |
c906108c SS |
4210 | |
4211 | putpkt ("qOffsets"); | |
8d64371b TT |
4212 | getpkt (&rs->buf, 0); |
4213 | buf = rs->buf.data (); | |
c906108c SS |
4214 | |
4215 | if (buf[0] == '\000') | |
4216 | return; /* Return silently. Stub doesn't support | |
23860348 | 4217 | this command. */ |
c906108c SS |
4218 | if (buf[0] == 'E') |
4219 | { | |
8a3fe4f8 | 4220 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4221 | return; |
4222 | } | |
4223 | ||
4224 | /* Pick up each field in turn. This used to be done with scanf, but | |
4225 | scanf will make trouble if CORE_ADDR size doesn't match | |
4226 | conversion directives correctly. The following code will work | |
4227 | with any size of CORE_ADDR. */ | |
4228 | text_addr = data_addr = bss_addr = 0; | |
4229 | ptr = buf; | |
4230 | lose = 0; | |
4231 | ||
61012eef | 4232 | if (startswith (ptr, "Text=")) |
c906108c SS |
4233 | { |
4234 | ptr += 5; | |
4235 | /* Don't use strtol, could lose on big values. */ | |
4236 | while (*ptr && *ptr != ';') | |
4237 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4238 | |
61012eef | 4239 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4240 | { |
4241 | ptr += 6; | |
4242 | while (*ptr && *ptr != ';') | |
4243 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4244 | } | |
4245 | else | |
4246 | lose = 1; | |
4247 | ||
61012eef | 4248 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4249 | { |
4250 | ptr += 5; | |
4251 | while (*ptr && *ptr != ';') | |
4252 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4253 | |
31d99776 DJ |
4254 | if (bss_addr != data_addr) |
4255 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4256 | } | |
4257 | else | |
4258 | lose = 1; | |
4259 | } | |
61012eef | 4260 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4261 | { |
31d99776 DJ |
4262 | ptr += 8; |
4263 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4264 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4265 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4266 | num_segments = 1; | |
4267 | ||
61012eef | 4268 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4269 | { |
4270 | ptr += 9; | |
4271 | while (*ptr && *ptr != ';') | |
4272 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4273 | num_segments++; | |
4274 | } | |
c906108c SS |
4275 | } |
4276 | else | |
4277 | lose = 1; | |
4278 | ||
4279 | if (lose) | |
8a3fe4f8 | 4280 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4281 | else if (*ptr != '\0') |
4282 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4283 | |
a42d7dd8 TT |
4284 | objfile *objf = current_program_space->symfile_object_file; |
4285 | section_offsets offs = objf->section_offsets; | |
c906108c | 4286 | |
a42d7dd8 | 4287 | symfile_segment_data_up data = get_symfile_segment_data (objf->obfd); |
31d99776 DJ |
4288 | do_segments = (data != NULL); |
4289 | do_sections = num_segments == 0; | |
c906108c | 4290 | |
28c32713 | 4291 | if (num_segments > 0) |
31d99776 | 4292 | { |
31d99776 DJ |
4293 | segments[0] = text_addr; |
4294 | segments[1] = data_addr; | |
4295 | } | |
28c32713 JB |
4296 | /* If we have two segments, we can still try to relocate everything |
4297 | by assuming that the .text and .data offsets apply to the whole | |
4298 | text and data segments. Convert the offsets given in the packet | |
4299 | to base addresses for symfile_map_offsets_to_segments. */ | |
68b888ff | 4300 | else if (data != nullptr && data->segments.size () == 2) |
28c32713 | 4301 | { |
68b888ff SM |
4302 | segments[0] = data->segments[0].base + text_addr; |
4303 | segments[1] = data->segments[1].base + data_addr; | |
28c32713 JB |
4304 | num_segments = 2; |
4305 | } | |
8d385431 DJ |
4306 | /* If the object file has only one segment, assume that it is text |
4307 | rather than data; main programs with no writable data are rare, | |
4308 | but programs with no code are useless. Of course the code might | |
4309 | have ended up in the data segment... to detect that we would need | |
4310 | the permissions here. */ | |
68b888ff | 4311 | else if (data && data->segments.size () == 1) |
8d385431 | 4312 | { |
68b888ff | 4313 | segments[0] = data->segments[0].base + text_addr; |
8d385431 DJ |
4314 | num_segments = 1; |
4315 | } | |
28c32713 JB |
4316 | /* There's no way to relocate by segment. */ |
4317 | else | |
4318 | do_segments = 0; | |
31d99776 DJ |
4319 | |
4320 | if (do_segments) | |
4321 | { | |
a42d7dd8 | 4322 | int ret = symfile_map_offsets_to_segments (objf->obfd, |
62982abd SM |
4323 | data.get (), offs, |
4324 | num_segments, segments); | |
31d99776 DJ |
4325 | |
4326 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4327 | error (_("Can not handle qOffsets TextSeg " |
4328 | "response with this symbol file")); | |
31d99776 DJ |
4329 | |
4330 | if (ret > 0) | |
4331 | do_sections = 0; | |
4332 | } | |
c906108c | 4333 | |
31d99776 DJ |
4334 | if (do_sections) |
4335 | { | |
a42d7dd8 | 4336 | offs[SECT_OFF_TEXT (objf)] = text_addr; |
31d99776 | 4337 | |
3e43a32a MS |
4338 | /* This is a temporary kludge to force data and bss to use the |
4339 | same offsets because that's what nlmconv does now. The real | |
4340 | solution requires changes to the stub and remote.c that I | |
4341 | don't have time to do right now. */ | |
31d99776 | 4342 | |
a42d7dd8 TT |
4343 | offs[SECT_OFF_DATA (objf)] = data_addr; |
4344 | offs[SECT_OFF_BSS (objf)] = data_addr; | |
31d99776 | 4345 | } |
c906108c | 4346 | |
a42d7dd8 | 4347 | objfile_relocate (objf, offs); |
c906108c SS |
4348 | } |
4349 | ||
9a7071a8 | 4350 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4351 | |
4352 | void | |
4353 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4354 | { |
5d93a237 TT |
4355 | struct remote_state *rs = get_remote_state (); |
4356 | ||
9a7071a8 | 4357 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4358 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4359 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4360 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4361 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4362 | { | |
5d93a237 | 4363 | serial_send_break (rs->remote_desc); |
c33e31fd | 4364 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4365 | } |
4366 | else | |
4367 | internal_error (__FILE__, __LINE__, | |
4368 | _("Invalid value for interrupt_sequence_mode: %s."), | |
4369 | interrupt_sequence_mode); | |
4370 | } | |
4371 | ||
3405876a PA |
4372 | |
4373 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4374 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4375 | ||
4376 | static ptid_t | |
e3b2741b | 4377 | stop_reply_extract_thread (const char *stop_reply) |
3405876a PA |
4378 | { |
4379 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4380 | { | |
256642e8 | 4381 | const char *p; |
3405876a PA |
4382 | |
4383 | /* Txx r:val ; r:val (...) */ | |
4384 | p = &stop_reply[3]; | |
4385 | ||
4386 | /* Look for "register" named "thread". */ | |
4387 | while (*p != '\0') | |
4388 | { | |
256642e8 | 4389 | const char *p1; |
3405876a PA |
4390 | |
4391 | p1 = strchr (p, ':'); | |
4392 | if (p1 == NULL) | |
4393 | return null_ptid; | |
4394 | ||
4395 | if (strncmp (p, "thread", p1 - p) == 0) | |
4396 | return read_ptid (++p1, &p); | |
4397 | ||
4398 | p1 = strchr (p, ';'); | |
4399 | if (p1 == NULL) | |
4400 | return null_ptid; | |
4401 | p1++; | |
4402 | ||
4403 | p = p1; | |
4404 | } | |
4405 | } | |
4406 | ||
4407 | return null_ptid; | |
4408 | } | |
4409 | ||
b7ea362b PA |
4410 | /* Determine the remote side's current thread. If we have a stop |
4411 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4412 | "thread" register we can extract the current thread from. If not, | |
4413 | ask the remote which is the current thread with qC. The former | |
4414 | method avoids a roundtrip. */ | |
4415 | ||
6b8edb51 | 4416 | ptid_t |
e3b2741b | 4417 | remote_target::get_current_thread (const char *wait_status) |
b7ea362b | 4418 | { |
6a49a997 | 4419 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4420 | |
4421 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4422 | the target architecture, which we haven't yet fully determined at | |
4423 | this point. */ | |
4424 | if (wait_status != NULL) | |
4425 | ptid = stop_reply_extract_thread (wait_status); | |
d7e15655 | 4426 | if (ptid == null_ptid) |
b7ea362b PA |
4427 | ptid = remote_current_thread (inferior_ptid); |
4428 | ||
4429 | return ptid; | |
4430 | } | |
4431 | ||
49c62f2e PA |
4432 | /* Query the remote target for which is the current thread/process, |
4433 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4434 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4435 | to return the current thread. |
4436 | ||
4437 | This function is called after handling the '?' or 'vRun' packets, | |
4438 | whose response is a stop reply from which we can also try | |
4439 | extracting the thread. If the target doesn't support the explicit | |
4440 | qC query, we infer the current thread from that stop reply, passed | |
64d38fdd | 4441 | in in WAIT_STATUS, which may be NULL. |
49c62f2e | 4442 | |
64d38fdd JM |
4443 | The function returns pointer to the main thread of the inferior. */ |
4444 | ||
4445 | thread_info * | |
e3b2741b | 4446 | remote_target::add_current_inferior_and_thread (const char *wait_status) |
49c62f2e PA |
4447 | { |
4448 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 4449 | bool fake_pid_p = false; |
49c62f2e | 4450 | |
0ac55310 | 4451 | switch_to_no_thread (); |
49c62f2e | 4452 | |
0ac55310 PA |
4453 | /* Now, if we have thread information, update the current thread's |
4454 | ptid. */ | |
87215ad1 | 4455 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4456 | |
87215ad1 | 4457 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4458 | { |
4459 | if (!remote_multi_process_p (rs)) | |
9ab8741a | 4460 | fake_pid_p = true; |
49c62f2e PA |
4461 | } |
4462 | else | |
4463 | { | |
4464 | /* Without this, some commands which require an active target | |
4465 | (such as kill) won't work. This variable serves (at least) | |
4466 | double duty as both the pid of the target process (if it has | |
4467 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4468 | curr_ptid = magic_null_ptid; |
9ab8741a | 4469 | fake_pid_p = true; |
49c62f2e PA |
4470 | } |
4471 | ||
e99b03dc | 4472 | remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1); |
49c62f2e | 4473 | |
87215ad1 SDJ |
4474 | /* Add the main thread and switch to it. Don't try reading |
4475 | registers yet, since we haven't fetched the target description | |
4476 | yet. */ | |
5b6d1e4f | 4477 | thread_info *tp = add_thread_silent (this, curr_ptid); |
87215ad1 | 4478 | switch_to_thread_no_regs (tp); |
64d38fdd JM |
4479 | |
4480 | return tp; | |
49c62f2e PA |
4481 | } |
4482 | ||
6efcd9a8 PA |
4483 | /* Print info about a thread that was found already stopped on |
4484 | connection. */ | |
4485 | ||
4486 | static void | |
4487 | print_one_stopped_thread (struct thread_info *thread) | |
4488 | { | |
4489 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
4490 | ||
00431a78 | 4491 | switch_to_thread (thread); |
f2ffa92b | 4492 | thread->suspend.stop_pc = get_frame_pc (get_current_frame ()); |
6efcd9a8 PA |
4493 | set_current_sal_from_frame (get_current_frame ()); |
4494 | ||
4495 | thread->suspend.waitstatus_pending_p = 0; | |
4496 | ||
4497 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
4498 | { | |
4499 | enum gdb_signal sig = ws->value.sig; | |
4500 | ||
4501 | if (signal_print_state (sig)) | |
76727919 | 4502 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4503 | } |
76727919 | 4504 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4505 | } |
4506 | ||
221e1a37 PA |
4507 | /* Process all initial stop replies the remote side sent in response |
4508 | to the ? packet. These indicate threads that were already stopped | |
4509 | on initial connection. We mark these threads as stopped and print | |
4510 | their current frame before giving the user the prompt. */ | |
4511 | ||
6b8edb51 PA |
4512 | void |
4513 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4514 | { |
4515 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4516 | struct thread_info *selected = NULL; |
4517 | struct thread_info *lowest_stopped = NULL; | |
4518 | struct thread_info *first = NULL; | |
221e1a37 PA |
4519 | |
4520 | /* Consume the initial pending events. */ | |
4521 | while (pending_stop_replies-- > 0) | |
4522 | { | |
4523 | ptid_t waiton_ptid = minus_one_ptid; | |
4524 | ptid_t event_ptid; | |
4525 | struct target_waitstatus ws; | |
4526 | int ignore_event = 0; | |
4527 | ||
4528 | memset (&ws, 0, sizeof (ws)); | |
4529 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
4530 | if (remote_debug) | |
4531 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
4532 | ||
4533 | switch (ws.kind) | |
4534 | { | |
4535 | case TARGET_WAITKIND_IGNORE: | |
4536 | case TARGET_WAITKIND_NO_RESUMED: | |
4537 | case TARGET_WAITKIND_SIGNALLED: | |
4538 | case TARGET_WAITKIND_EXITED: | |
4539 | /* We shouldn't see these, but if we do, just ignore. */ | |
2189c312 | 4540 | remote_debug_printf ("event ignored"); |
221e1a37 PA |
4541 | ignore_event = 1; |
4542 | break; | |
4543 | ||
4544 | case TARGET_WAITKIND_EXECD: | |
4545 | xfree (ws.value.execd_pathname); | |
4546 | break; | |
4547 | default: | |
4548 | break; | |
4549 | } | |
4550 | ||
4551 | if (ignore_event) | |
4552 | continue; | |
4553 | ||
5b6d1e4f | 4554 | thread_info *evthread = find_thread_ptid (this, event_ptid); |
221e1a37 PA |
4555 | |
4556 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
4557 | { | |
4558 | enum gdb_signal sig = ws.value.sig; | |
4559 | ||
4560 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4561 | instead of signal 0. Suppress it. */ | |
4562 | if (sig == GDB_SIGNAL_TRAP) | |
4563 | sig = GDB_SIGNAL_0; | |
b926417a | 4564 | evthread->suspend.stop_signal = sig; |
6efcd9a8 PA |
4565 | ws.value.sig = sig; |
4566 | } | |
221e1a37 | 4567 | |
b926417a | 4568 | evthread->suspend.waitstatus = ws; |
6efcd9a8 PA |
4569 | |
4570 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
4571 | || ws.value.sig != GDB_SIGNAL_0) | |
b926417a | 4572 | evthread->suspend.waitstatus_pending_p = 1; |
6efcd9a8 | 4573 | |
719546c4 SM |
4574 | set_executing (this, event_ptid, false); |
4575 | set_running (this, event_ptid, false); | |
c9d22089 | 4576 | get_remote_thread_info (evthread)->set_not_resumed (); |
6efcd9a8 PA |
4577 | } |
4578 | ||
4579 | /* "Notice" the new inferiors before anything related to | |
4580 | registers/memory. */ | |
5b6d1e4f | 4581 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4582 | { |
6efcd9a8 PA |
4583 | inf->needs_setup = 1; |
4584 | ||
4585 | if (non_stop) | |
4586 | { | |
08036331 | 4587 | thread_info *thread = any_live_thread_of_inferior (inf); |
00431a78 | 4588 | notice_new_inferior (thread, thread->state == THREAD_RUNNING, |
6efcd9a8 PA |
4589 | from_tty); |
4590 | } | |
4591 | } | |
4592 | ||
4593 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4594 | records the threads' stop pc, so must be done after "noticing" | |
4595 | the inferiors. */ | |
4596 | if (!non_stop) | |
4597 | { | |
2bf06f96 | 4598 | stop_all_threads ("remote connect in all-stop"); |
6efcd9a8 PA |
4599 | |
4600 | /* If all threads of an inferior were already stopped, we | |
4601 | haven't setup the inferior yet. */ | |
5b6d1e4f | 4602 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4603 | { |
6efcd9a8 PA |
4604 | if (inf->needs_setup) |
4605 | { | |
08036331 | 4606 | thread_info *thread = any_live_thread_of_inferior (inf); |
6efcd9a8 PA |
4607 | switch_to_thread_no_regs (thread); |
4608 | setup_inferior (0); | |
4609 | } | |
4610 | } | |
221e1a37 | 4611 | } |
6efcd9a8 PA |
4612 | |
4613 | /* Now go over all threads that are stopped, and print their current | |
4614 | frame. If all-stop, then if there's a signalled thread, pick | |
4615 | that as current. */ | |
5b6d1e4f | 4616 | for (thread_info *thread : all_non_exited_threads (this)) |
6efcd9a8 | 4617 | { |
6efcd9a8 PA |
4618 | if (first == NULL) |
4619 | first = thread; | |
4620 | ||
4621 | if (!non_stop) | |
00431a78 | 4622 | thread->set_running (false); |
6efcd9a8 PA |
4623 | else if (thread->state != THREAD_STOPPED) |
4624 | continue; | |
4625 | ||
6efcd9a8 PA |
4626 | if (selected == NULL |
4627 | && thread->suspend.waitstatus_pending_p) | |
4628 | selected = thread; | |
4629 | ||
5d5658a1 PA |
4630 | if (lowest_stopped == NULL |
4631 | || thread->inf->num < lowest_stopped->inf->num | |
4632 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4633 | lowest_stopped = thread; |
4634 | ||
4635 | if (non_stop) | |
4636 | print_one_stopped_thread (thread); | |
4637 | } | |
4638 | ||
4639 | /* In all-stop, we only print the status of one thread, and leave | |
4640 | others with their status pending. */ | |
4641 | if (!non_stop) | |
4642 | { | |
08036331 | 4643 | thread_info *thread = selected; |
6efcd9a8 PA |
4644 | if (thread == NULL) |
4645 | thread = lowest_stopped; | |
4646 | if (thread == NULL) | |
4647 | thread = first; | |
4648 | ||
4649 | print_one_stopped_thread (thread); | |
4650 | } | |
4651 | ||
4652 | /* For "info program". */ | |
08036331 | 4653 | thread_info *thread = inferior_thread (); |
6efcd9a8 | 4654 | if (thread->state == THREAD_STOPPED) |
5b6d1e4f | 4655 | set_last_target_status (this, inferior_ptid, thread->suspend.waitstatus); |
221e1a37 PA |
4656 | } |
4657 | ||
048094ac PA |
4658 | /* Start the remote connection and sync state. */ |
4659 | ||
f6ac5f3d PA |
4660 | void |
4661 | remote_target::start_remote (int from_tty, int extended_p) | |
c906108c | 4662 | { |
2189c312 SM |
4663 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
4664 | ||
c8d104ad PA |
4665 | struct remote_state *rs = get_remote_state (); |
4666 | struct packet_config *noack_config; | |
8621d6a9 | 4667 | |
048094ac PA |
4668 | /* Signal other parts that we're going through the initial setup, |
4669 | and so things may not be stable yet. E.g., we don't try to | |
4670 | install tracepoints until we've relocated symbols. Also, a | |
4671 | Ctrl-C before we're connected and synced up can't interrupt the | |
4672 | target. Instead, it offers to drop the (potentially wedged) | |
4673 | connection. */ | |
4d60b897 | 4674 | rs->starting_up = true; |
048094ac | 4675 | |
522002f9 | 4676 | QUIT; |
c906108c | 4677 | |
9a7071a8 JB |
4678 | if (interrupt_on_connect) |
4679 | send_interrupt_sequence (); | |
4680 | ||
57e12211 | 4681 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4682 | remote_serial_write ("+", 1); |
1e51243a | 4683 | |
c8d104ad PA |
4684 | /* The first packet we send to the target is the optional "supported |
4685 | packets" request. If the target can answer this, it will tell us | |
4686 | which later probes to skip. */ | |
4687 | remote_query_supported (); | |
4688 | ||
d914c394 | 4689 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4690 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4691 | set_permissions (); |
d914c394 | 4692 | |
57809e5e JK |
4693 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4694 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4695 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4696 | invalid reply and GDB would return error in | |
4697 | remote_hostio_set_filesystem, making remote files access impossible. | |
4698 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4699 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4700 | { | |
4701 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4702 | ||
4703 | putpkt (v_mustreplyempty); | |
8d64371b TT |
4704 | getpkt (&rs->buf, 0); |
4705 | if (strcmp (rs->buf.data (), "OK") == 0) | |
57809e5e | 4706 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; |
8d64371b | 4707 | else if (strcmp (rs->buf.data (), "") != 0) |
57809e5e | 4708 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, |
8d64371b | 4709 | rs->buf.data ()); |
57809e5e JK |
4710 | } |
4711 | ||
c8d104ad PA |
4712 | /* Next, we possibly activate noack mode. |
4713 | ||
4714 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4715 | enable noack mode if the stub reported a wish for it with | |
4716 | qSupported. | |
4717 | ||
4718 | If set to TRUE, then enable noack mode even if the stub didn't | |
4719 | report it in qSupported. If the stub doesn't reply OK, the | |
4720 | session ends with an error. | |
4721 | ||
4722 | If FALSE, then don't activate noack mode, regardless of what the | |
4723 | stub claimed should be the default with qSupported. */ | |
4724 | ||
4725 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4726 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4727 | { |
4728 | putpkt ("QStartNoAckMode"); | |
8d64371b | 4729 | getpkt (&rs->buf, 0); |
c8d104ad PA |
4730 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) |
4731 | rs->noack_mode = 1; | |
4732 | } | |
4733 | ||
04bd08de | 4734 | if (extended_p) |
5fe04517 PA |
4735 | { |
4736 | /* Tell the remote that we are using the extended protocol. */ | |
4737 | putpkt ("!"); | |
8d64371b | 4738 | getpkt (&rs->buf, 0); |
5fe04517 PA |
4739 | } |
4740 | ||
9b224c5e PA |
4741 | /* Let the target know which signals it is allowed to pass down to |
4742 | the program. */ | |
4743 | update_signals_program_target (); | |
4744 | ||
d962ef82 DJ |
4745 | /* Next, if the target can specify a description, read it. We do |
4746 | this before anything involving memory or registers. */ | |
4747 | target_find_description (); | |
4748 | ||
6c95b8df PA |
4749 | /* Next, now that we know something about the target, update the |
4750 | address spaces in the program spaces. */ | |
4751 | update_address_spaces (); | |
4752 | ||
50c71eaf PA |
4753 | /* On OSs where the list of libraries is global to all |
4754 | processes, we fetch them early. */ | |
f5656ead | 4755 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4756 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4757 | |
6efcd9a8 | 4758 | if (target_is_non_stop_p ()) |
74531fed | 4759 | { |
4082afcc | 4760 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4761 | error (_("Non-stop mode requested, but remote " |
4762 | "does not support non-stop")); | |
74531fed PA |
4763 | |
4764 | putpkt ("QNonStop:1"); | |
8d64371b | 4765 | getpkt (&rs->buf, 0); |
74531fed | 4766 | |
8d64371b TT |
4767 | if (strcmp (rs->buf.data (), "OK") != 0) |
4768 | error (_("Remote refused setting non-stop mode with: %s"), | |
4769 | rs->buf.data ()); | |
74531fed PA |
4770 | |
4771 | /* Find about threads and processes the stub is already | |
4772 | controlling. We default to adding them in the running state. | |
4773 | The '?' query below will then tell us about which threads are | |
4774 | stopped. */ | |
f6ac5f3d | 4775 | this->update_thread_list (); |
74531fed | 4776 | } |
4082afcc | 4777 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4778 | { |
4779 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4780 | Request it explicitly. */ |
74531fed | 4781 | putpkt ("QNonStop:0"); |
8d64371b | 4782 | getpkt (&rs->buf, 0); |
74531fed | 4783 | |
8d64371b TT |
4784 | if (strcmp (rs->buf.data (), "OK") != 0) |
4785 | error (_("Remote refused setting all-stop mode with: %s"), | |
4786 | rs->buf.data ()); | |
74531fed PA |
4787 | } |
4788 | ||
a0743c90 YQ |
4789 | /* Upload TSVs regardless of whether the target is running or not. The |
4790 | remote stub, such as GDBserver, may have some predefined or builtin | |
4791 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4792 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4793 | { |
4794 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4795 | ||
f6ac5f3d | 4796 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4797 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4798 | } | |
4799 | ||
2d717e4f DJ |
4800 | /* Check whether the target is running now. */ |
4801 | putpkt ("?"); | |
8d64371b | 4802 | getpkt (&rs->buf, 0); |
2d717e4f | 4803 | |
6efcd9a8 | 4804 | if (!target_is_non_stop_p ()) |
2d717e4f | 4805 | { |
b5c8f22d SM |
4806 | char *wait_status = NULL; |
4807 | ||
74531fed | 4808 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4809 | { |
04bd08de | 4810 | if (!extended_p) |
74531fed | 4811 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4812 | |
4813 | /* We're connected, but not running. Drop out before we | |
4814 | call start_remote. */ | |
4d60b897 | 4815 | rs->starting_up = false; |
c35b1492 | 4816 | return; |
2d717e4f DJ |
4817 | } |
4818 | else | |
74531fed | 4819 | { |
74531fed | 4820 | /* Save the reply for later. */ |
8d64371b TT |
4821 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
4822 | strcpy (wait_status, rs->buf.data ()); | |
74531fed PA |
4823 | } |
4824 | ||
b7ea362b | 4825 | /* Fetch thread list. */ |
e8032dde | 4826 | target_update_thread_list (); |
b7ea362b | 4827 | |
74531fed PA |
4828 | /* Let the stub know that we want it to return the thread. */ |
4829 | set_continue_thread (minus_one_ptid); | |
4830 | ||
5b6d1e4f | 4831 | if (thread_count (this) == 0) |
b7ea362b PA |
4832 | { |
4833 | /* Target has no concept of threads at all. GDB treats | |
4834 | non-threaded target as single-threaded; add a main | |
4835 | thread. */ | |
64d38fdd JM |
4836 | thread_info *tp = add_current_inferior_and_thread (wait_status); |
4837 | get_remote_thread_info (tp)->set_resumed (); | |
b7ea362b PA |
4838 | } |
4839 | else | |
4840 | { | |
4841 | /* We have thread information; select the thread the target | |
4842 | says should be current. If we're reconnecting to a | |
4843 | multi-threaded program, this will ideally be the thread | |
4844 | that last reported an event before GDB disconnected. */ | |
75c6c844 PA |
4845 | ptid_t curr_thread = get_current_thread (wait_status); |
4846 | if (curr_thread == null_ptid) | |
b7ea362b PA |
4847 | { |
4848 | /* Odd... The target was able to list threads, but not | |
4849 | tell us which thread was current (no "thread" | |
4850 | register in T stop reply?). Just pick the first | |
4851 | thread in the thread list then. */ | |
2189c312 SM |
4852 | |
4853 | remote_debug_printf ("warning: couldn't determine remote " | |
4854 | "current thread; picking first in list."); | |
c9f35b34 | 4855 | |
5b6d1e4f PA |
4856 | for (thread_info *tp : all_non_exited_threads (this, |
4857 | minus_one_ptid)) | |
75c6c844 PA |
4858 | { |
4859 | switch_to_thread (tp); | |
4860 | break; | |
4861 | } | |
b7ea362b | 4862 | } |
75c6c844 | 4863 | else |
5b6d1e4f | 4864 | switch_to_thread (find_thread_ptid (this, curr_thread)); |
b7ea362b | 4865 | } |
74531fed | 4866 | |
6e586cc5 YQ |
4867 | /* init_wait_for_inferior should be called before get_offsets in order |
4868 | to manage `inserted' flag in bp loc in a correct state. | |
4869 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4870 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4871 | start_remote, set `inserted' flag to 1. In the initialization of | |
4872 | inferior, breakpoint_init_inferior should be called first, and then | |
4873 | breakpoint_re_set can be called. If this order is broken, state of | |
4874 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4875 | manipulation. */ | |
4876 | init_wait_for_inferior (); | |
4877 | ||
74531fed PA |
4878 | get_offsets (); /* Get text, data & bss offsets. */ |
4879 | ||
d962ef82 DJ |
4880 | /* If we could not find a description using qXfer, and we know |
4881 | how to do it some other way, try again. This is not | |
4882 | supported for non-stop; it could be, but it is tricky if | |
4883 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4884 | if (remote_read_description_p (this) |
f5656ead | 4885 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4886 | { |
4887 | target_clear_description (); | |
4888 | target_find_description (); | |
4889 | } | |
4890 | ||
74531fed PA |
4891 | /* Use the previously fetched status. */ |
4892 | gdb_assert (wait_status != NULL); | |
8d64371b | 4893 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
4894 | rs->cached_wait_status = 1; |
4895 | ||
f6ac5f3d | 4896 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4897 | } |
4898 | else | |
4899 | { | |
68c97600 PA |
4900 | /* Clear WFI global state. Do this before finding about new |
4901 | threads and inferiors, and setting the current inferior. | |
4902 | Otherwise we would clear the proceed status of the current | |
4903 | inferior when we want its stop_soon state to be preserved | |
4904 | (see notice_new_inferior). */ | |
4905 | init_wait_for_inferior (); | |
4906 | ||
74531fed PA |
4907 | /* In non-stop, we will either get an "OK", meaning that there |
4908 | are no stopped threads at this time; or, a regular stop | |
4909 | reply. In the latter case, there may be more than one thread | |
4910 | stopped --- we pull them all out using the vStopped | |
4911 | mechanism. */ | |
8d64371b | 4912 | if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 4913 | { |
722247f1 | 4914 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4915 | |
722247f1 YQ |
4916 | /* remote_notif_get_pending_replies acks this one, and gets |
4917 | the rest out. */ | |
f48ff2a7 | 4918 | rs->notif_state->pending_event[notif_client_stop.id] |
8d64371b | 4919 | = remote_notif_parse (this, notif, rs->buf.data ()); |
722247f1 | 4920 | remote_notif_get_pending_events (notif); |
74531fed | 4921 | } |
2d717e4f | 4922 | |
5b6d1e4f | 4923 | if (thread_count (this) == 0) |
74531fed | 4924 | { |
04bd08de | 4925 | if (!extended_p) |
74531fed | 4926 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4927 | |
c35b1492 PA |
4928 | /* We're connected, but not running. Drop out before we |
4929 | call start_remote. */ | |
4d60b897 | 4930 | rs->starting_up = false; |
c35b1492 PA |
4931 | return; |
4932 | } | |
74531fed | 4933 | |
2455069d | 4934 | /* Report all signals during attach/startup. */ |
adc6a863 | 4935 | pass_signals ({}); |
221e1a37 PA |
4936 | |
4937 | /* If there are already stopped threads, mark them stopped and | |
4938 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4939 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4940 | |
4941 | if (target_can_async_p ()) | |
4942 | target_async (1); | |
74531fed | 4943 | } |
c8d104ad | 4944 | |
c8d104ad | 4945 | /* If we connected to a live target, do some additional setup. */ |
55f6301a | 4946 | if (target_has_execution ()) |
c8d104ad | 4947 | { |
a42d7dd8 TT |
4948 | /* No use without a symbol-file. */ |
4949 | if (current_program_space->symfile_object_file) | |
36d25514 | 4950 | remote_check_symbols (); |
c8d104ad | 4951 | } |
50c71eaf | 4952 | |
d5551862 SS |
4953 | /* Possibly the target has been engaged in a trace run started |
4954 | previously; find out where things are at. */ | |
f6ac5f3d | 4955 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 4956 | { |
00bf0b85 | 4957 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4958 | |
00bf0b85 SS |
4959 | if (current_trace_status ()->running) |
4960 | printf_filtered (_("Trace is already running on the target.\n")); | |
4961 | ||
f6ac5f3d | 4962 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
4963 | |
4964 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4965 | } |
4966 | ||
c0272db5 TW |
4967 | /* Possibly the target has been engaged in a btrace record started |
4968 | previously; find out where things are at. */ | |
4969 | remote_btrace_maybe_reopen (); | |
4970 | ||
1e51243a PA |
4971 | /* The thread and inferior lists are now synchronized with the |
4972 | target, our symbols have been relocated, and we're merged the | |
4973 | target's tracepoints with ours. We're done with basic start | |
4974 | up. */ | |
4d60b897 | 4975 | rs->starting_up = false; |
1e51243a | 4976 | |
a25a5a45 PA |
4977 | /* Maybe breakpoints are global and need to be inserted now. */ |
4978 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4979 | insert_breakpoints (); |
c906108c SS |
4980 | } |
4981 | ||
121b3efd PA |
4982 | const char * |
4983 | remote_target::connection_string () | |
4984 | { | |
4985 | remote_state *rs = get_remote_state (); | |
4986 | ||
4987 | if (rs->remote_desc->name != NULL) | |
4988 | return rs->remote_desc->name; | |
4989 | else | |
4990 | return NULL; | |
4991 | } | |
4992 | ||
c906108c SS |
4993 | /* Open a connection to a remote debugger. |
4994 | NAME is the filename used for communication. */ | |
4995 | ||
f6ac5f3d PA |
4996 | void |
4997 | remote_target::open (const char *name, int from_tty) | |
c906108c | 4998 | { |
f6ac5f3d | 4999 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
5000 | } |
5001 | ||
c906108c SS |
5002 | /* Open a connection to a remote debugger using the extended |
5003 | remote gdb protocol. NAME is the filename used for communication. */ | |
5004 | ||
f6ac5f3d PA |
5005 | void |
5006 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 5007 | { |
f6ac5f3d | 5008 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
5009 | } |
5010 | ||
ca4f7f8b PA |
5011 | /* Reset all packets back to "unknown support". Called when opening a |
5012 | new connection to a remote target. */ | |
c906108c | 5013 | |
d471ea57 | 5014 | static void |
ca4f7f8b | 5015 | reset_all_packet_configs_support (void) |
d471ea57 AC |
5016 | { |
5017 | int i; | |
a744cf53 | 5018 | |
444abaca | 5019 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 5020 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
5021 | } |
5022 | ||
ca4f7f8b PA |
5023 | /* Initialize all packet configs. */ |
5024 | ||
5025 | static void | |
5026 | init_all_packet_configs (void) | |
5027 | { | |
5028 | int i; | |
5029 | ||
5030 | for (i = 0; i < PACKET_MAX; i++) | |
5031 | { | |
5032 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
5033 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
5034 | } | |
5035 | } | |
5036 | ||
23860348 | 5037 | /* Symbol look-up. */ |
dc8acb97 | 5038 | |
6b8edb51 PA |
5039 | void |
5040 | remote_target::remote_check_symbols () | |
dc8acb97 | 5041 | { |
8d64371b | 5042 | char *tmp; |
dc8acb97 MS |
5043 | int end; |
5044 | ||
63154eca PA |
5045 | /* The remote side has no concept of inferiors that aren't running |
5046 | yet, it only knows about running processes. If we're connected | |
5047 | but our current inferior is not running, we should not invite the | |
5048 | remote target to request symbol lookups related to its | |
5049 | (unrelated) current process. */ | |
55f6301a | 5050 | if (!target_has_execution ()) |
63154eca PA |
5051 | return; |
5052 | ||
4082afcc | 5053 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
5054 | return; |
5055 | ||
63154eca PA |
5056 | /* Make sure the remote is pointing at the right process. Note |
5057 | there's no way to select "no process". */ | |
3c9c4b83 PA |
5058 | set_general_process (); |
5059 | ||
6d820c5c DJ |
5060 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
5061 | because we need both at the same time. */ | |
66644cd3 | 5062 | gdb::char_vector msg (get_remote_packet_size ()); |
8d64371b | 5063 | gdb::char_vector reply (get_remote_packet_size ()); |
6d820c5c | 5064 | |
23860348 | 5065 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
5066 | |
5067 | putpkt ("qSymbol::"); | |
8d64371b | 5068 | getpkt (&reply, 0); |
28170b88 | 5069 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); |
dc8acb97 | 5070 | |
8d64371b | 5071 | while (startswith (reply.data (), "qSymbol:")) |
dc8acb97 | 5072 | { |
77e371c0 TT |
5073 | struct bound_minimal_symbol sym; |
5074 | ||
dc8acb97 | 5075 | tmp = &reply[8]; |
66644cd3 AB |
5076 | end = hex2bin (tmp, reinterpret_cast <gdb_byte *> (msg.data ()), |
5077 | strlen (tmp) / 2); | |
dc8acb97 | 5078 | msg[end] = '\0'; |
66644cd3 | 5079 | sym = lookup_minimal_symbol (msg.data (), NULL, NULL); |
3b7344d5 | 5080 | if (sym.minsym == NULL) |
66644cd3 AB |
5081 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol::%s", |
5082 | &reply[8]); | |
dc8acb97 | 5083 | else |
2bbe3cc1 | 5084 | { |
f5656ead | 5085 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 5086 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
5087 | |
5088 | /* If this is a function address, return the start of code | |
5089 | instead of any data function descriptor. */ | |
328d42d8 SM |
5090 | sym_addr = gdbarch_convert_from_func_ptr_addr |
5091 | (target_gdbarch (), sym_addr, current_inferior ()->top_target ()); | |
2bbe3cc1 | 5092 | |
66644cd3 | 5093 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol:%s:%s", |
5af949e3 | 5094 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 | 5095 | } |
66644cd3 AB |
5096 | |
5097 | putpkt (msg.data ()); | |
8d64371b | 5098 | getpkt (&reply, 0); |
dc8acb97 MS |
5099 | } |
5100 | } | |
5101 | ||
9db8d71f | 5102 | static struct serial * |
baa336ce | 5103 | remote_serial_open (const char *name) |
9db8d71f DJ |
5104 | { |
5105 | static int udp_warning = 0; | |
5106 | ||
5107 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
5108 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
5109 | serial connection is reliable and not the serial connection promising | |
5110 | to be. */ | |
61012eef | 5111 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 5112 | { |
3e43a32a MS |
5113 | warning (_("The remote protocol may be unreliable over UDP.\n" |
5114 | "Some events may be lost, rendering further debugging " | |
5115 | "impossible.")); | |
9db8d71f DJ |
5116 | udp_warning = 1; |
5117 | } | |
5118 | ||
5119 | return serial_open (name); | |
5120 | } | |
5121 | ||
d914c394 SS |
5122 | /* Inform the target of our permission settings. The permission flags |
5123 | work without this, but if the target knows the settings, it can do | |
5124 | a couple things. First, it can add its own check, to catch cases | |
5125 | that somehow manage to get by the permissions checks in target | |
5126 | methods. Second, if the target is wired to disallow particular | |
5127 | settings (for instance, a system in the field that is not set up to | |
5128 | be able to stop at a breakpoint), it can object to any unavailable | |
5129 | permissions. */ | |
5130 | ||
5131 | void | |
f6ac5f3d | 5132 | remote_target::set_permissions () |
d914c394 SS |
5133 | { |
5134 | struct remote_state *rs = get_remote_state (); | |
5135 | ||
8d64371b | 5136 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAllow:" |
bba74b36 YQ |
5137 | "WriteReg:%x;WriteMem:%x;" |
5138 | "InsertBreak:%x;InsertTrace:%x;" | |
5139 | "InsertFastTrace:%x;Stop:%x", | |
5140 | may_write_registers, may_write_memory, | |
5141 | may_insert_breakpoints, may_insert_tracepoints, | |
5142 | may_insert_fast_tracepoints, may_stop); | |
d914c394 | 5143 | putpkt (rs->buf); |
8d64371b | 5144 | getpkt (&rs->buf, 0); |
d914c394 SS |
5145 | |
5146 | /* If the target didn't like the packet, warn the user. Do not try | |
5147 | to undo the user's settings, that would just be maddening. */ | |
8d64371b TT |
5148 | if (strcmp (rs->buf.data (), "OK") != 0) |
5149 | warning (_("Remote refused setting permissions with: %s"), | |
5150 | rs->buf.data ()); | |
d914c394 SS |
5151 | } |
5152 | ||
be2a5f71 DJ |
5153 | /* This type describes each known response to the qSupported |
5154 | packet. */ | |
5155 | struct protocol_feature | |
5156 | { | |
5157 | /* The name of this protocol feature. */ | |
5158 | const char *name; | |
5159 | ||
5160 | /* The default for this protocol feature. */ | |
5161 | enum packet_support default_support; | |
5162 | ||
5163 | /* The function to call when this feature is reported, or after | |
5164 | qSupported processing if the feature is not supported. | |
5165 | The first argument points to this structure. The second | |
5166 | argument indicates whether the packet requested support be | |
5167 | enabled, disabled, or probed (or the default, if this function | |
5168 | is being called at the end of processing and this feature was | |
5169 | not reported). The third argument may be NULL; if not NULL, it | |
5170 | is a NUL-terminated string taken from the packet following | |
5171 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5172 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5173 | enum packet_support, const char *); | |
be2a5f71 DJ |
5174 | |
5175 | /* The corresponding packet for this feature. Only used if | |
5176 | FUNC is remote_supported_packet. */ | |
5177 | int packet; | |
5178 | }; | |
5179 | ||
be2a5f71 | 5180 | static void |
6b8edb51 PA |
5181 | remote_supported_packet (remote_target *remote, |
5182 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5183 | enum packet_support support, |
5184 | const char *argument) | |
5185 | { | |
5186 | if (argument) | |
5187 | { | |
5188 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5189 | " \"%s\"."), feature->name); | |
5190 | return; | |
5191 | } | |
5192 | ||
4082afcc | 5193 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5194 | } |
be2a5f71 | 5195 | |
6b8edb51 PA |
5196 | void |
5197 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5198 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5199 | { |
5200 | struct remote_state *rs = get_remote_state (); | |
5201 | ||
5202 | int packet_size; | |
5203 | char *value_end; | |
5204 | ||
5205 | if (support != PACKET_ENABLE) | |
5206 | return; | |
5207 | ||
5208 | if (value == NULL || *value == '\0') | |
5209 | { | |
5210 | warning (_("Remote target reported \"%s\" without a size."), | |
5211 | feature->name); | |
5212 | return; | |
5213 | } | |
5214 | ||
5215 | errno = 0; | |
5216 | packet_size = strtol (value, &value_end, 16); | |
5217 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5218 | { | |
5219 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5220 | feature->name, value); | |
5221 | return; | |
5222 | } | |
5223 | ||
be2a5f71 DJ |
5224 | /* Record the new maximum packet size. */ |
5225 | rs->explicit_packet_size = packet_size; | |
5226 | } | |
5227 | ||
cb8c24b6 | 5228 | static void |
6b8edb51 PA |
5229 | remote_packet_size (remote_target *remote, const protocol_feature *feature, |
5230 | enum packet_support support, const char *value) | |
5231 | { | |
5232 | remote->remote_packet_size (feature, support, value); | |
5233 | } | |
5234 | ||
dc473cfb | 5235 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5236 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5237 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5238 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5239 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5240 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5241 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5242 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5243 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5244 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5245 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5246 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5247 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5248 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5249 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5250 | PACKET_qXfer_memory_map }, |
07e059b5 VP |
5251 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5252 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5253 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5254 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5255 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5256 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5257 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5258 | PACKET_QPassSignals }, | |
82075af2 JS |
5259 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5260 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5261 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5262 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5263 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5264 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5265 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5266 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5267 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5268 | PACKET_QEnvironmentHexEncoded }, | |
5269 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5270 | PACKET_QEnvironmentReset }, | |
5271 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5272 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5273 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5274 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5275 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5276 | PACKET_multiprocess_feature }, | |
5277 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5278 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5279 | PACKET_qXfer_siginfo_read }, | |
5280 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5281 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5282 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5283 | PACKET_ConditionalTracepoints }, |
4082afcc | 5284 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5285 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5286 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5287 | PACKET_BreakpointCommands }, |
4082afcc | 5288 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5289 | PACKET_FastTracepoints }, |
4082afcc | 5290 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5291 | PACKET_StaticTracepoints }, |
4082afcc | 5292 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5293 | PACKET_InstallInTrace}, |
4082afcc PA |
5294 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5295 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5296 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5297 | PACKET_bc }, | |
5298 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5299 | PACKET_bs }, | |
409873ef SS |
5300 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5301 | PACKET_TracepointSource }, | |
d914c394 SS |
5302 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5303 | PACKET_QAllow }, | |
4082afcc PA |
5304 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5305 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5306 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5307 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5308 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5309 | PACKET_qXfer_uib }, | |
03583c20 UW |
5310 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5311 | PACKET_QDisableRandomization }, | |
d1feda86 | 5312 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5313 | { "QTBuffer:size", PACKET_DISABLE, |
5314 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5315 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5316 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5317 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5318 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5319 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5320 | PACKET_qXfer_btrace }, |
5321 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5322 | PACKET_qXfer_btrace_conf }, |
5323 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5324 | PACKET_Qbtrace_conf_bts_size }, |
5325 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5326 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5327 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5328 | PACKET_fork_event_feature }, | |
5329 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5330 | PACKET_vfork_event_feature }, | |
94585166 DB |
5331 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5332 | PACKET_exec_event_feature }, | |
b20a6524 | 5333 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5334 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5335 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5336 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5337 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
2c2e7f87 LM |
5338 | { "memory-tagging", PACKET_DISABLE, remote_supported_packet, |
5339 | PACKET_memory_tagging_feature }, | |
be2a5f71 DJ |
5340 | }; |
5341 | ||
c8d5aac9 L |
5342 | static char *remote_support_xml; |
5343 | ||
5344 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5345 | ||
5346 | void | |
6e39997a | 5347 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5348 | { |
5349 | #if defined(HAVE_LIBEXPAT) | |
5350 | if (remote_support_xml == NULL) | |
c4f7c687 | 5351 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5352 | else |
5353 | { | |
5354 | char *copy = xstrdup (remote_support_xml + 13); | |
ca3a04f6 CB |
5355 | char *saveptr; |
5356 | char *p = strtok_r (copy, ",", &saveptr); | |
c8d5aac9 L |
5357 | |
5358 | do | |
5359 | { | |
5360 | if (strcmp (p, xml) == 0) | |
5361 | { | |
5362 | /* already there */ | |
5363 | xfree (copy); | |
5364 | return; | |
5365 | } | |
5366 | } | |
ca3a04f6 | 5367 | while ((p = strtok_r (NULL, ",", &saveptr)) != NULL); |
c8d5aac9 L |
5368 | xfree (copy); |
5369 | ||
94b0dee1 PA |
5370 | remote_support_xml = reconcat (remote_support_xml, |
5371 | remote_support_xml, ",", xml, | |
5372 | (char *) NULL); | |
c8d5aac9 L |
5373 | } |
5374 | #endif | |
5375 | } | |
5376 | ||
69b6ecb0 TT |
5377 | static void |
5378 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5379 | { |
69b6ecb0 TT |
5380 | if (!msg->empty ()) |
5381 | msg->append (";"); | |
5382 | msg->append (append); | |
c8d5aac9 L |
5383 | } |
5384 | ||
6b8edb51 PA |
5385 | void |
5386 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5387 | { |
5388 | struct remote_state *rs = get_remote_state (); | |
5389 | char *next; | |
5390 | int i; | |
5391 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5392 | ||
5393 | /* The packet support flags are handled differently for this packet | |
5394 | than for most others. We treat an error, a disabled packet, and | |
5395 | an empty response identically: any features which must be reported | |
5396 | to be used will be automatically disabled. An empty buffer | |
5397 | accomplishes this, since that is also the representation for a list | |
5398 | containing no features. */ | |
5399 | ||
5400 | rs->buf[0] = 0; | |
4082afcc | 5401 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5402 | { |
69b6ecb0 | 5403 | std::string q; |
c8d5aac9 | 5404 | |
73b8c1fd | 5405 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5406 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5407 | |
f7e6eed5 | 5408 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5409 | remote_query_supported_append (&q, "swbreak+"); |
f7e6eed5 | 5410 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5411 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5412 | |
69b6ecb0 | 5413 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5414 | |
8020350c DB |
5415 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
5416 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5417 | remote_query_supported_append (&q, "fork-events+"); |
8020350c DB |
5418 | if (packet_set_cmd_state (PACKET_vfork_event_feature) |
5419 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5420 | remote_query_supported_append (&q, "vfork-events+"); |
8020350c DB |
5421 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
5422 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5423 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5424 | |
750ce8d1 | 5425 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5426 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5427 | |
65706a29 | 5428 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5429 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5430 | |
f2faf941 | 5431 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5432 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5433 | |
2c2e7f87 LM |
5434 | if (packet_set_cmd_state (PACKET_memory_tagging_feature) |
5435 | != AUTO_BOOLEAN_FALSE) | |
5436 | remote_query_supported_append (&q, "memory-tagging+"); | |
5437 | ||
b35d5edb PA |
5438 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5439 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5440 | if (remote_support_xml != NULL |
5441 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
69b6ecb0 | 5442 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5443 | |
69b6ecb0 TT |
5444 | q = "qSupported:" + q; |
5445 | putpkt (q.c_str ()); | |
94b0dee1 | 5446 | |
8d64371b | 5447 | getpkt (&rs->buf, 0); |
be2a5f71 DJ |
5448 | |
5449 | /* If an error occured, warn, but do not return - just reset the | |
5450 | buffer to empty and go on to disable features. */ | |
5451 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5452 | == PACKET_ERROR) | |
5453 | { | |
8d64371b | 5454 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
be2a5f71 DJ |
5455 | rs->buf[0] = 0; |
5456 | } | |
5457 | } | |
5458 | ||
5459 | memset (seen, 0, sizeof (seen)); | |
5460 | ||
8d64371b | 5461 | next = rs->buf.data (); |
be2a5f71 DJ |
5462 | while (*next) |
5463 | { | |
5464 | enum packet_support is_supported; | |
5465 | char *p, *end, *name_end, *value; | |
5466 | ||
5467 | /* First separate out this item from the rest of the packet. If | |
5468 | there's another item after this, we overwrite the separator | |
5469 | (terminated strings are much easier to work with). */ | |
5470 | p = next; | |
5471 | end = strchr (p, ';'); | |
5472 | if (end == NULL) | |
5473 | { | |
5474 | end = p + strlen (p); | |
5475 | next = end; | |
5476 | } | |
5477 | else | |
5478 | { | |
89be2091 DJ |
5479 | *end = '\0'; |
5480 | next = end + 1; | |
5481 | ||
be2a5f71 DJ |
5482 | if (end == p) |
5483 | { | |
5484 | warning (_("empty item in \"qSupported\" response")); | |
5485 | continue; | |
5486 | } | |
be2a5f71 DJ |
5487 | } |
5488 | ||
5489 | name_end = strchr (p, '='); | |
5490 | if (name_end) | |
5491 | { | |
5492 | /* This is a name=value entry. */ | |
5493 | is_supported = PACKET_ENABLE; | |
5494 | value = name_end + 1; | |
5495 | *name_end = '\0'; | |
5496 | } | |
5497 | else | |
5498 | { | |
5499 | value = NULL; | |
5500 | switch (end[-1]) | |
5501 | { | |
5502 | case '+': | |
5503 | is_supported = PACKET_ENABLE; | |
5504 | break; | |
5505 | ||
5506 | case '-': | |
5507 | is_supported = PACKET_DISABLE; | |
5508 | break; | |
5509 | ||
5510 | case '?': | |
5511 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5512 | break; | |
5513 | ||
5514 | default: | |
3e43a32a MS |
5515 | warning (_("unrecognized item \"%s\" " |
5516 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5517 | continue; |
5518 | } | |
5519 | end[-1] = '\0'; | |
5520 | } | |
5521 | ||
5522 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5523 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5524 | { | |
5525 | const struct protocol_feature *feature; | |
5526 | ||
5527 | seen[i] = 1; | |
5528 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5529 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5530 | break; |
5531 | } | |
5532 | } | |
5533 | ||
5534 | /* If we increased the packet size, make sure to increase the global | |
5535 | buffer size also. We delay this until after parsing the entire | |
5536 | qSupported packet, because this is the same buffer we were | |
5537 | parsing. */ | |
8d64371b TT |
5538 | if (rs->buf.size () < rs->explicit_packet_size) |
5539 | rs->buf.resize (rs->explicit_packet_size); | |
be2a5f71 DJ |
5540 | |
5541 | /* Handle the defaults for unmentioned features. */ | |
5542 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5543 | if (!seen[i]) | |
5544 | { | |
5545 | const struct protocol_feature *feature; | |
5546 | ||
5547 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5548 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5549 | } |
5550 | } | |
5551 | ||
048094ac PA |
5552 | /* Serial QUIT handler for the remote serial descriptor. |
5553 | ||
5554 | Defers handling a Ctrl-C until we're done with the current | |
5555 | command/response packet sequence, unless: | |
5556 | ||
5557 | - We're setting up the connection. Don't send a remote interrupt | |
5558 | request, as we're not fully synced yet. Quit immediately | |
5559 | instead. | |
5560 | ||
5561 | - The target has been resumed in the foreground | |
223ffa71 | 5562 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5563 | packet, and we're blocked waiting for the stop reply, thus a |
5564 | Ctrl-C should be immediately sent to the target. | |
5565 | ||
5566 | - We get a second Ctrl-C while still within the same serial read or | |
5567 | write. In that case the serial is seemingly wedged --- offer to | |
5568 | quit/disconnect. | |
5569 | ||
5570 | - We see a second Ctrl-C without target response, after having | |
5571 | previously interrupted the target. In that case the target/stub | |
5572 | is probably wedged --- offer to quit/disconnect. | |
5573 | */ | |
5574 | ||
6b8edb51 PA |
5575 | void |
5576 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5577 | { |
5578 | struct remote_state *rs = get_remote_state (); | |
5579 | ||
5580 | if (check_quit_flag ()) | |
5581 | { | |
5582 | /* If we're starting up, we're not fully synced yet. Quit | |
5583 | immediately. */ | |
5584 | if (rs->starting_up) | |
5585 | quit (); | |
5586 | else if (rs->got_ctrlc_during_io) | |
5587 | { | |
5588 | if (query (_("The target is not responding to GDB commands.\n" | |
5589 | "Stop debugging it? "))) | |
5b6d1e4f | 5590 | remote_unpush_and_throw (this); |
048094ac PA |
5591 | } |
5592 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5593 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5594 | interrupt_query (); |
5595 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5596 | an interrupt request. */ | |
223ffa71 | 5597 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5598 | target_interrupt (); |
048094ac PA |
5599 | else |
5600 | rs->got_ctrlc_during_io = 1; | |
5601 | } | |
5602 | } | |
5603 | ||
6b8edb51 PA |
5604 | /* The remote_target that is current while the quit handler is |
5605 | overridden with remote_serial_quit_handler. */ | |
5606 | static remote_target *curr_quit_handler_target; | |
5607 | ||
5608 | static void | |
5609 | remote_serial_quit_handler () | |
5610 | { | |
5611 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5612 | } | |
5613 | ||
5b6d1e4f PA |
5614 | /* Remove the remote target from the target stack of each inferior |
5615 | that is using it. Upper targets depend on it so remove them | |
5616 | first. */ | |
78a095c3 JK |
5617 | |
5618 | static void | |
5b6d1e4f | 5619 | remote_unpush_target (remote_target *target) |
78a095c3 | 5620 | { |
5b6d1e4f PA |
5621 | /* We have to unpush the target from all inferiors, even those that |
5622 | aren't running. */ | |
5623 | scoped_restore_current_inferior restore_current_inferior; | |
5624 | ||
5625 | for (inferior *inf : all_inferiors (target)) | |
5626 | { | |
5627 | switch_to_inferior_no_thread (inf); | |
5628 | pop_all_targets_at_and_above (process_stratum); | |
5629 | generic_mourn_inferior (); | |
5630 | } | |
97c5ca8c PA |
5631 | |
5632 | /* Don't rely on target_close doing this when the target is popped | |
5633 | from the last remote inferior above, because something may be | |
5634 | holding a reference to the target higher up on the stack, meaning | |
5635 | target_close won't be called yet. We lost the connection to the | |
5636 | target, so clear these now, otherwise we may later throw | |
5637 | TARGET_CLOSE_ERROR while trying to tell the remote target to | |
5638 | close the file. */ | |
5639 | fileio_handles_invalidate_target (target); | |
78a095c3 | 5640 | } |
be2a5f71 | 5641 | |
048094ac | 5642 | static void |
5b6d1e4f | 5643 | remote_unpush_and_throw (remote_target *target) |
048094ac | 5644 | { |
5b6d1e4f | 5645 | remote_unpush_target (target); |
048094ac PA |
5646 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
5647 | } | |
5648 | ||
f6ac5f3d PA |
5649 | void |
5650 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5651 | { |
6b8edb51 | 5652 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5653 | |
c906108c | 5654 | if (name == 0) |
8a3fe4f8 | 5655 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5656 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5657 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5658 | |
2d717e4f | 5659 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5660 | Ask this question first, before target_preopen has a chance to kill |
5661 | anything. */ | |
55f6301a | 5662 | if (curr_remote != NULL && !target_has_execution ()) |
2d717e4f | 5663 | { |
78a095c3 JK |
5664 | if (from_tty |
5665 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5666 | error (_("Still connected.")); |
5667 | } | |
5668 | ||
78a095c3 | 5669 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5670 | target_preopen (from_tty); |
5671 | ||
ad9a8f3f | 5672 | remote_fileio_reset (); |
1dd41f16 NS |
5673 | reopen_exec_file (); |
5674 | reread_symbols (); | |
5675 | ||
6b8edb51 PA |
5676 | remote_target *remote |
5677 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5678 | target_ops_up target_holder (remote); | |
5679 | ||
5680 | remote_state *rs = remote->get_remote_state (); | |
5681 | ||
5682 | /* See FIXME above. */ | |
5683 | if (!target_async_permitted) | |
5684 | rs->wait_forever_enabled_p = 1; | |
5685 | ||
5d93a237 TT |
5686 | rs->remote_desc = remote_serial_open (name); |
5687 | if (!rs->remote_desc) | |
c906108c SS |
5688 | perror_with_name (name); |
5689 | ||
5690 | if (baud_rate != -1) | |
5691 | { | |
5d93a237 | 5692 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5693 | { |
9b74d5d3 KB |
5694 | /* The requested speed could not be set. Error out to |
5695 | top level after closing remote_desc. Take care to | |
5696 | set remote_desc to NULL to avoid closing remote_desc | |
5697 | more than once. */ | |
5d93a237 TT |
5698 | serial_close (rs->remote_desc); |
5699 | rs->remote_desc = NULL; | |
c906108c SS |
5700 | perror_with_name (name); |
5701 | } | |
5702 | } | |
5703 | ||
236af5e3 | 5704 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5705 | serial_raw (rs->remote_desc); |
c906108c SS |
5706 | |
5707 | /* If there is something sitting in the buffer we might take it as a | |
5708 | response to a command, which would be bad. */ | |
5d93a237 | 5709 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5710 | |
5711 | if (from_tty) | |
5712 | { | |
5713 | puts_filtered ("Remote debugging using "); | |
5714 | puts_filtered (name); | |
5715 | puts_filtered ("\n"); | |
5716 | } | |
d9f719f1 | 5717 | |
6b8edb51 | 5718 | /* Switch to using the remote target now. */ |
02980c56 | 5719 | current_inferior ()->push_target (std::move (target_holder)); |
c906108c | 5720 | |
74531fed | 5721 | /* Register extra event sources in the event loop. */ |
6b8edb51 | 5722 | rs->remote_async_inferior_event_token |
baa8575b | 5723 | = create_async_event_handler (remote_async_inferior_event_handler, nullptr, |
db20ebdf | 5724 | "remote"); |
6b8edb51 | 5725 | rs->notif_state = remote_notif_state_allocate (remote); |
74531fed | 5726 | |
be2a5f71 DJ |
5727 | /* Reset the target state; these things will be queried either by |
5728 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5729 | reset_all_packet_configs_support (); |
74531fed | 5730 | rs->cached_wait_status = 0; |
be2a5f71 | 5731 | rs->explicit_packet_size = 0; |
a6f3e723 | 5732 | rs->noack_mode = 0; |
82f73884 | 5733 | rs->extended = extended_p; |
e24a49d8 | 5734 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5735 | rs->ctrlc_pending_p = 0; |
048094ac | 5736 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5737 | |
47f8a51d TT |
5738 | rs->general_thread = not_sent_ptid; |
5739 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5740 | rs->remote_traceframe_number = -1; |
c906108c | 5741 | |
3a00c802 PA |
5742 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5743 | ||
9d1f7ab2 | 5744 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5745 | rs->use_threadinfo_query = 1; |
5746 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5747 | |
dd194f6b | 5748 | rs->readahead_cache.invalidate (); |
80152258 | 5749 | |
c6ebd6cf | 5750 | if (target_async_permitted) |
92d1e331 | 5751 | { |
92d1e331 DJ |
5752 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5753 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5754 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5755 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5756 | around this. Eventually a mechanism that allows |
92d1e331 | 5757 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5758 | implemented. */ |
6b8edb51 | 5759 | rs->wait_forever_enabled_p = 0; |
92d1e331 DJ |
5760 | } |
5761 | ||
23860348 | 5762 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5763 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5764 | |
36918e70 | 5765 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5766 | target (we'd otherwise be in an inconsistent state) and then |
5767 | propogate the error on up the exception chain. This ensures that | |
5768 | the caller doesn't stumble along blindly assuming that the | |
5769 | function succeeded. The CLI doesn't have this problem but other | |
5770 | UI's, such as MI do. | |
36918e70 AC |
5771 | |
5772 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5773 | this function should return an error indication letting the | |
ce2826aa | 5774 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5775 | ``target remote'' is directly wired to this function making that |
5776 | impossible. On a positive note, the CLI side of this problem has | |
5777 | been fixed - the function set_cmd_context() makes it possible for | |
5778 | all the ``target ....'' commands to share a common callback | |
5779 | function. See cli-dump.c. */ | |
109c3e39 | 5780 | { |
2d717e4f | 5781 | |
a70b8144 | 5782 | try |
04bd08de | 5783 | { |
6b8edb51 | 5784 | remote->start_remote (from_tty, extended_p); |
04bd08de | 5785 | } |
230d2906 | 5786 | catch (const gdb_exception &ex) |
109c3e39 | 5787 | { |
c8d104ad PA |
5788 | /* Pop the partially set up target - unless something else did |
5789 | already before throwing the exception. */ | |
6b8edb51 | 5790 | if (ex.error != TARGET_CLOSE_ERROR) |
5b6d1e4f | 5791 | remote_unpush_target (remote); |
eedc3f4f | 5792 | throw; |
109c3e39 AC |
5793 | } |
5794 | } | |
c906108c | 5795 | |
6b8edb51 | 5796 | remote_btrace_reset (rs); |
f4abbc16 | 5797 | |
c6ebd6cf | 5798 | if (target_async_permitted) |
6b8edb51 | 5799 | rs->wait_forever_enabled_p = 1; |
43ff13b4 JM |
5800 | } |
5801 | ||
de0d863e DB |
5802 | /* Detach the specified process. */ |
5803 | ||
6b8edb51 PA |
5804 | void |
5805 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
5806 | { |
5807 | struct remote_state *rs = get_remote_state (); | |
5808 | ||
4c7333b3 PA |
5809 | /* This should not be necessary, but the handling for D;PID in |
5810 | GDBserver versions prior to 8.2 incorrectly assumes that the | |
5811 | selected process points to the same process we're detaching, | |
5812 | leading to misbehavior (and possibly GDBserver crashing) when it | |
5813 | does not. Since it's easy and cheap, work around it by forcing | |
5814 | GDBserver to select GDB's current process. */ | |
5815 | set_general_process (); | |
5816 | ||
de0d863e | 5817 | if (remote_multi_process_p (rs)) |
8d64371b | 5818 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "D;%x", pid); |
de0d863e | 5819 | else |
8d64371b | 5820 | strcpy (rs->buf.data (), "D"); |
de0d863e DB |
5821 | |
5822 | putpkt (rs->buf); | |
8d64371b | 5823 | getpkt (&rs->buf, 0); |
de0d863e DB |
5824 | |
5825 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5826 | ; | |
5827 | else if (rs->buf[0] == '\0') | |
5828 | error (_("Remote doesn't know how to detach")); | |
5829 | else | |
5830 | error (_("Can't detach process.")); | |
5831 | } | |
5832 | ||
5833 | /* This detaches a program to which we previously attached, using | |
5834 | inferior_ptid to identify the process. After this is done, GDB | |
5835 | can be used to debug some other program. We better not have left | |
5836 | any breakpoints in the target program or it'll die when it hits | |
5837 | one. */ | |
c906108c | 5838 | |
6b8edb51 | 5839 | void |
00431a78 | 5840 | remote_target::remote_detach_1 (inferior *inf, int from_tty) |
c906108c | 5841 | { |
e99b03dc | 5842 | int pid = inferior_ptid.pid (); |
d01949b6 | 5843 | struct remote_state *rs = get_remote_state (); |
de0d863e | 5844 | int is_fork_parent; |
c906108c | 5845 | |
55f6301a | 5846 | if (!target_has_execution ()) |
2d717e4f DJ |
5847 | error (_("No process to detach from.")); |
5848 | ||
0f48b757 | 5849 | target_announce_detach (from_tty); |
7cee1e54 | 5850 | |
e87f0fe8 PA |
5851 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) |
5852 | { | |
5853 | /* If we're in breakpoints-always-inserted mode, or the inferior | |
5854 | is running, we have to remove breakpoints before detaching. | |
5855 | We don't do this in common code instead because not all | |
5856 | targets support removing breakpoints while the target is | |
5857 | running. The remote target / gdbserver does, though. */ | |
5858 | remove_breakpoints_inf (current_inferior ()); | |
5859 | } | |
5860 | ||
c906108c | 5861 | /* Tell the remote target to detach. */ |
de0d863e | 5862 | remote_detach_pid (pid); |
82f73884 | 5863 | |
8020350c | 5864 | /* Exit only if this is the only active inferior. */ |
5b6d1e4f | 5865 | if (from_tty && !rs->extended && number_of_live_inferiors (this) == 1) |
7cee1e54 | 5866 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5867 | |
5b6d1e4f | 5868 | thread_info *tp = find_thread_ptid (this, inferior_ptid); |
00431a78 | 5869 | |
de0d863e DB |
5870 | /* Check to see if we are detaching a fork parent. Note that if we |
5871 | are detaching a fork child, tp == NULL. */ | |
5872 | is_fork_parent = (tp != NULL | |
5873 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5874 | ||
5875 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5876 | breakpoints that should be available for the followed inferior. */ | |
5877 | if (!is_fork_parent) | |
f67c0c91 | 5878 | { |
249b5733 PA |
5879 | /* Save the pid as a string before mourning, since that will |
5880 | unpush the remote target, and we need the string after. */ | |
f2907e49 | 5881 | std::string infpid = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
5882 | |
5883 | target_mourn_inferior (inferior_ptid); | |
5884 | if (print_inferior_events) | |
5885 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
5886 | inf->num, infpid.c_str ()); | |
5887 | } | |
de0d863e DB |
5888 | else |
5889 | { | |
0ac55310 | 5890 | switch_to_no_thread (); |
00431a78 | 5891 | detach_inferior (current_inferior ()); |
de0d863e | 5892 | } |
2d717e4f DJ |
5893 | } |
5894 | ||
f6ac5f3d PA |
5895 | void |
5896 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5897 | { |
00431a78 | 5898 | remote_detach_1 (inf, from_tty); |
2d717e4f DJ |
5899 | } |
5900 | ||
f6ac5f3d PA |
5901 | void |
5902 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5903 | { |
00431a78 | 5904 | remote_detach_1 (inf, from_tty); |
de0d863e DB |
5905 | } |
5906 | ||
5907 | /* Target follow-fork function for remote targets. On entry, and | |
5908 | at return, the current inferior is the fork parent. | |
5909 | ||
5910 | Note that although this is currently only used for extended-remote, | |
5911 | it is named remote_follow_fork in anticipation of using it for the | |
5912 | remote target as well. */ | |
5913 | ||
e97007b6 | 5914 | void |
5ab2fbf1 | 5915 | remote_target::follow_fork (bool follow_child, bool detach_fork) |
de0d863e DB |
5916 | { |
5917 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5918 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5919 | |
c269dbdb DB |
5920 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5921 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5922 | { |
5923 | /* When following the parent and detaching the child, we detach | |
5924 | the child here. For the case of following the child and | |
5925 | detaching the parent, the detach is done in the target- | |
5926 | independent follow fork code in infrun.c. We can't use | |
5927 | target_detach when detaching an unfollowed child because | |
5928 | the client side doesn't know anything about the child. */ | |
5929 | if (detach_fork && !follow_child) | |
5930 | { | |
5931 | /* Detach the fork child. */ | |
5932 | ptid_t child_ptid; | |
5933 | pid_t child_pid; | |
5934 | ||
5935 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
e99b03dc | 5936 | child_pid = child_ptid.pid (); |
de0d863e DB |
5937 | |
5938 | remote_detach_pid (child_pid); | |
de0d863e DB |
5939 | } |
5940 | } | |
c906108c SS |
5941 | } |
5942 | ||
94585166 | 5943 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
294c36eb | 5944 | in the program space of the new inferior. */ |
94585166 | 5945 | |
f6ac5f3d | 5946 | void |
294c36eb SM |
5947 | remote_target::follow_exec (inferior *follow_inf, ptid_t ptid, |
5948 | const char *execd_pathname) | |
94585166 | 5949 | { |
294c36eb SM |
5950 | process_stratum_target::follow_exec (follow_inf, ptid, execd_pathname); |
5951 | ||
94585166 DB |
5952 | /* We know that this is a target file name, so if it has the "target:" |
5953 | prefix we strip it off before saving it in the program space. */ | |
5954 | if (is_target_filename (execd_pathname)) | |
5955 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5956 | ||
294c36eb | 5957 | set_pspace_remote_exec_file (follow_inf->pspace, execd_pathname); |
94585166 DB |
5958 | } |
5959 | ||
6ad8ae5c DJ |
5960 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5961 | ||
f6ac5f3d PA |
5962 | void |
5963 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 5964 | { |
43ff13b4 | 5965 | if (args) |
2d717e4f | 5966 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5967 | |
8020350c | 5968 | /* Make sure we unpush even the extended remote targets. Calling |
5b6d1e4f PA |
5969 | target_mourn_inferior won't unpush, and |
5970 | remote_target::mourn_inferior won't unpush if there is more than | |
5971 | one inferior left. */ | |
5972 | remote_unpush_target (this); | |
2d717e4f | 5973 | |
43ff13b4 JM |
5974 | if (from_tty) |
5975 | puts_filtered ("Ending remote debugging.\n"); | |
5976 | } | |
5977 | ||
2d717e4f DJ |
5978 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5979 | be chatty about it. */ | |
5980 | ||
f6ac5f3d PA |
5981 | void |
5982 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
5983 | { |
5984 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5985 | int pid; |
96ef3384 | 5986 | char *wait_status = NULL; |
2d717e4f | 5987 | |
74164c56 | 5988 | pid = parse_pid_to_attach (args); |
2d717e4f | 5989 | |
74164c56 JK |
5990 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5991 | way as in other targets. */ | |
2d717e4f | 5992 | |
4082afcc | 5993 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5994 | error (_("This target does not support attaching to a process")); |
5995 | ||
7cee1e54 PA |
5996 | if (from_tty) |
5997 | { | |
d9fa87f4 | 5998 | const char *exec_file = get_exec_file (0); |
7cee1e54 PA |
5999 | |
6000 | if (exec_file) | |
6001 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
a068643d | 6002 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
6003 | else |
6004 | printf_unfiltered (_("Attaching to %s\n"), | |
a068643d | 6005 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
6006 | } |
6007 | ||
8d64371b | 6008 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f | 6009 | putpkt (rs->buf); |
8d64371b | 6010 | getpkt (&rs->buf, 0); |
2d717e4f | 6011 | |
4082afcc PA |
6012 | switch (packet_ok (rs->buf, |
6013 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 6014 | { |
4082afcc | 6015 | case PACKET_OK: |
6efcd9a8 | 6016 | if (!target_is_non_stop_p ()) |
74531fed PA |
6017 | { |
6018 | /* Save the reply for later. */ | |
8d64371b TT |
6019 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
6020 | strcpy (wait_status, rs->buf.data ()); | |
74531fed | 6021 | } |
8d64371b | 6022 | else if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 6023 | error (_("Attaching to %s failed with: %s"), |
a068643d | 6024 | target_pid_to_str (ptid_t (pid)).c_str (), |
8d64371b | 6025 | rs->buf.data ()); |
4082afcc PA |
6026 | break; |
6027 | case PACKET_UNKNOWN: | |
6028 | error (_("This target does not support attaching to a process")); | |
6029 | default: | |
50fa3001 SDJ |
6030 | error (_("Attaching to %s failed"), |
6031 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
2d717e4f | 6032 | } |
2d717e4f | 6033 | |
0ac55310 | 6034 | switch_to_inferior_no_thread (remote_add_inferior (false, pid, 1, 0)); |
bad34192 | 6035 | |
f2907e49 | 6036 | inferior_ptid = ptid_t (pid); |
79d7f229 | 6037 | |
6efcd9a8 | 6038 | if (target_is_non_stop_p ()) |
bad34192 | 6039 | { |
bad34192 | 6040 | /* Get list of threads. */ |
f6ac5f3d | 6041 | update_thread_list (); |
82f73884 | 6042 | |
0ac55310 PA |
6043 | thread_info *thread = first_thread_of_inferior (current_inferior ()); |
6044 | if (thread != nullptr) | |
6045 | switch_to_thread (thread); | |
bad34192 PA |
6046 | |
6047 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 6048 | record_currthread (rs, minus_one_ptid); |
bad34192 | 6049 | } |
74531fed | 6050 | else |
bad34192 | 6051 | { |
0ac55310 PA |
6052 | /* Now, if we have thread information, update the main thread's |
6053 | ptid. */ | |
6054 | ptid_t curr_ptid = remote_current_thread (ptid_t (pid)); | |
bad34192 | 6055 | |
6eccc2c8 AB |
6056 | /* Add the main thread to the thread list. We add the thread |
6057 | silently in this case (the final true parameter). */ | |
6058 | thread_info *thr = remote_add_thread (curr_ptid, true, true, true); | |
0ac55310 PA |
6059 | |
6060 | switch_to_thread (thr); | |
bad34192 | 6061 | } |
c0a2216e | 6062 | |
96ef3384 UW |
6063 | /* Next, if the target can specify a description, read it. We do |
6064 | this before anything involving memory or registers. */ | |
6065 | target_find_description (); | |
6066 | ||
6efcd9a8 | 6067 | if (!target_is_non_stop_p ()) |
74531fed PA |
6068 | { |
6069 | /* Use the previously fetched status. */ | |
6070 | gdb_assert (wait_status != NULL); | |
6071 | ||
6072 | if (target_can_async_p ()) | |
6073 | { | |
722247f1 | 6074 | struct notif_event *reply |
6b8edb51 | 6075 | = remote_notif_parse (this, ¬if_client_stop, wait_status); |
74531fed | 6076 | |
722247f1 | 6077 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 6078 | |
6a3753b3 | 6079 | target_async (1); |
74531fed PA |
6080 | } |
6081 | else | |
6082 | { | |
6083 | gdb_assert (wait_status != NULL); | |
8d64371b | 6084 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
6085 | rs->cached_wait_status = 1; |
6086 | } | |
6087 | } | |
6088 | else | |
621cc310 PA |
6089 | { |
6090 | gdb_assert (wait_status == NULL); | |
6091 | ||
6092 | gdb_assert (target_can_async_p ()); | |
6093 | target_async (1); | |
6094 | } | |
2d717e4f DJ |
6095 | } |
6096 | ||
b9c1d481 AS |
6097 | /* Implementation of the to_post_attach method. */ |
6098 | ||
f6ac5f3d PA |
6099 | void |
6100 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 6101 | { |
6efcd9a8 PA |
6102 | /* Get text, data & bss offsets. */ |
6103 | get_offsets (); | |
6104 | ||
b9c1d481 AS |
6105 | /* In certain cases GDB might not have had the chance to start |
6106 | symbol lookup up until now. This could happen if the debugged | |
6107 | binary is not using shared libraries, the vsyscall page is not | |
6108 | present (on Linux) and the binary itself hadn't changed since the | |
6109 | debugging process was started. */ | |
a42d7dd8 | 6110 | if (current_program_space->symfile_object_file != NULL) |
b9c1d481 AS |
6111 | remote_check_symbols(); |
6112 | } | |
6113 | ||
c906108c | 6114 | \f |
506fb367 DJ |
6115 | /* Check for the availability of vCont. This function should also check |
6116 | the response. */ | |
c906108c | 6117 | |
6b8edb51 PA |
6118 | void |
6119 | remote_target::remote_vcont_probe () | |
c906108c | 6120 | { |
6b8edb51 | 6121 | remote_state *rs = get_remote_state (); |
2e9f7625 | 6122 | char *buf; |
6d820c5c | 6123 | |
8d64371b | 6124 | strcpy (rs->buf.data (), "vCont?"); |
2e9f7625 | 6125 | putpkt (rs->buf); |
8d64371b TT |
6126 | getpkt (&rs->buf, 0); |
6127 | buf = rs->buf.data (); | |
c906108c | 6128 | |
506fb367 | 6129 | /* Make sure that the features we assume are supported. */ |
61012eef | 6130 | if (startswith (buf, "vCont")) |
506fb367 DJ |
6131 | { |
6132 | char *p = &buf[5]; | |
750ce8d1 | 6133 | int support_c, support_C; |
506fb367 | 6134 | |
750ce8d1 YQ |
6135 | rs->supports_vCont.s = 0; |
6136 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
6137 | support_c = 0; |
6138 | support_C = 0; | |
d458bd84 | 6139 | rs->supports_vCont.t = 0; |
c1e36e3e | 6140 | rs->supports_vCont.r = 0; |
506fb367 DJ |
6141 | while (p && *p == ';') |
6142 | { | |
6143 | p++; | |
6144 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 6145 | rs->supports_vCont.s = 1; |
506fb367 | 6146 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 6147 | rs->supports_vCont.S = 1; |
506fb367 DJ |
6148 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6149 | support_c = 1; | |
6150 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
6151 | support_C = 1; | |
74531fed | 6152 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 6153 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
6154 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6155 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
6156 | |
6157 | p = strchr (p, ';'); | |
6158 | } | |
c906108c | 6159 | |
750ce8d1 YQ |
6160 | /* If c, and C are not all supported, we can't use vCont. Clearing |
6161 | BUF will make packet_ok disable the packet. */ | |
6162 | if (!support_c || !support_C) | |
506fb367 DJ |
6163 | buf[0] = 0; |
6164 | } | |
c906108c | 6165 | |
8d64371b | 6166 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCont]); |
5b6d1e4f | 6167 | rs->supports_vCont_probed = true; |
506fb367 | 6168 | } |
c906108c | 6169 | |
0d8f58ca PA |
6170 | /* Helper function for building "vCont" resumptions. Write a |
6171 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
6172 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
6173 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
6174 | resumed thread should be single-stepped and/or signalled. If PTID | |
6175 | equals minus_one_ptid, then all threads are resumed; if PTID | |
6176 | represents a process, then all threads of the process are resumed; | |
6177 | the thread to be stepped and/or signalled is given in the global | |
6178 | INFERIOR_PTID. */ | |
6179 | ||
6b8edb51 PA |
6180 | char * |
6181 | remote_target::append_resumption (char *p, char *endp, | |
6182 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
6183 | { |
6184 | struct remote_state *rs = get_remote_state (); | |
6185 | ||
a493e3e2 | 6186 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 6187 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
6188 | else if (step |
6189 | /* GDB is willing to range step. */ | |
6190 | && use_range_stepping | |
6191 | /* Target supports range stepping. */ | |
6192 | && rs->supports_vCont.r | |
6193 | /* We don't currently support range stepping multiple | |
6194 | threads with a wildcard (though the protocol allows it, | |
6195 | so stubs shouldn't make an active effort to forbid | |
6196 | it). */ | |
0e998d96 | 6197 | && !(remote_multi_process_p (rs) && ptid.is_pid ())) |
c1e36e3e PA |
6198 | { |
6199 | struct thread_info *tp; | |
6200 | ||
d7e15655 | 6201 | if (ptid == minus_one_ptid) |
c1e36e3e PA |
6202 | { |
6203 | /* If we don't know about the target thread's tid, then | |
6204 | we're resuming magic_null_ptid (see caller). */ | |
5b6d1e4f | 6205 | tp = find_thread_ptid (this, magic_null_ptid); |
c1e36e3e PA |
6206 | } |
6207 | else | |
5b6d1e4f | 6208 | tp = find_thread_ptid (this, ptid); |
c1e36e3e PA |
6209 | gdb_assert (tp != NULL); |
6210 | ||
6211 | if (tp->control.may_range_step) | |
6212 | { | |
6213 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
6214 | ||
6215 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6216 | phex_nz (tp->control.step_range_start, | |
6217 | addr_size), | |
6218 | phex_nz (tp->control.step_range_end, | |
6219 | addr_size)); | |
6220 | } | |
6221 | else | |
6222 | p += xsnprintf (p, endp - p, ";s"); | |
6223 | } | |
0d8f58ca PA |
6224 | else if (step) |
6225 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6226 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6227 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6228 | else | |
6229 | p += xsnprintf (p, endp - p, ";c"); | |
6230 | ||
0e998d96 | 6231 | if (remote_multi_process_p (rs) && ptid.is_pid ()) |
0d8f58ca PA |
6232 | { |
6233 | ptid_t nptid; | |
6234 | ||
6235 | /* All (-1) threads of process. */ | |
e99b03dc | 6236 | nptid = ptid_t (ptid.pid (), -1, 0); |
0d8f58ca PA |
6237 | |
6238 | p += xsnprintf (p, endp - p, ":"); | |
6239 | p = write_ptid (p, endp, nptid); | |
6240 | } | |
d7e15655 | 6241 | else if (ptid != minus_one_ptid) |
0d8f58ca PA |
6242 | { |
6243 | p += xsnprintf (p, endp - p, ":"); | |
6244 | p = write_ptid (p, endp, ptid); | |
6245 | } | |
6246 | ||
6247 | return p; | |
6248 | } | |
6249 | ||
799a2abe PA |
6250 | /* Clear the thread's private info on resume. */ |
6251 | ||
6252 | static void | |
6253 | resume_clear_thread_private_info (struct thread_info *thread) | |
6254 | { | |
6255 | if (thread->priv != NULL) | |
6256 | { | |
7aabaf9d SM |
6257 | remote_thread_info *priv = get_remote_thread_info (thread); |
6258 | ||
6259 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6260 | priv->watch_data_address = 0; | |
799a2abe PA |
6261 | } |
6262 | } | |
6263 | ||
e5ef252a PA |
6264 | /* Append a vCont continue-with-signal action for threads that have a |
6265 | non-zero stop signal. */ | |
6266 | ||
6b8edb51 PA |
6267 | char * |
6268 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6269 | ptid_t ptid) | |
e5ef252a | 6270 | { |
5b6d1e4f | 6271 | for (thread_info *thread : all_non_exited_threads (this, ptid)) |
08036331 | 6272 | if (inferior_ptid != thread->ptid |
70509625 | 6273 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
6274 | { |
6275 | p = append_resumption (p, endp, thread->ptid, | |
6276 | 0, thread->suspend.stop_signal); | |
6277 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 6278 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6279 | } |
6280 | ||
6281 | return p; | |
6282 | } | |
6283 | ||
7b68ffbb PA |
6284 | /* Set the target running, using the packets that use Hc |
6285 | (c/s/C/S). */ | |
6286 | ||
6b8edb51 PA |
6287 | void |
6288 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6289 | gdb_signal siggnal) | |
7b68ffbb PA |
6290 | { |
6291 | struct remote_state *rs = get_remote_state (); | |
7b68ffbb PA |
6292 | char *buf; |
6293 | ||
6294 | rs->last_sent_signal = siggnal; | |
6295 | rs->last_sent_step = step; | |
6296 | ||
6297 | /* The c/s/C/S resume packets use Hc, so set the continue | |
6298 | thread. */ | |
d7e15655 | 6299 | if (ptid == minus_one_ptid) |
7b68ffbb PA |
6300 | set_continue_thread (any_thread_ptid); |
6301 | else | |
6302 | set_continue_thread (ptid); | |
6303 | ||
5b6d1e4f | 6304 | for (thread_info *thread : all_non_exited_threads (this)) |
7b68ffbb PA |
6305 | resume_clear_thread_private_info (thread); |
6306 | ||
8d64371b | 6307 | buf = rs->buf.data (); |
6b8edb51 | 6308 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6309 | { |
6310 | /* We don't pass signals to the target in reverse exec mode. */ | |
6311 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
6312 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
6313 | siggnal); | |
6314 | ||
6315 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
6316 | error (_("Remote reverse-step not supported.")); | |
6317 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
6318 | error (_("Remote reverse-continue not supported.")); | |
6319 | ||
6320 | strcpy (buf, step ? "bs" : "bc"); | |
6321 | } | |
6322 | else if (siggnal != GDB_SIGNAL_0) | |
6323 | { | |
6324 | buf[0] = step ? 'S' : 'C'; | |
6325 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
6326 | buf[2] = tohex (((int) siggnal) & 0xf); | |
6327 | buf[3] = '\0'; | |
6328 | } | |
6329 | else | |
6330 | strcpy (buf, step ? "s" : "c"); | |
6331 | ||
6332 | putpkt (buf); | |
6333 | } | |
6334 | ||
506fb367 DJ |
6335 | /* Resume the remote inferior by using a "vCont" packet. The thread |
6336 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
6337 | resumed thread should be single-stepped and/or signalled. If PTID |
6338 | equals minus_one_ptid, then all threads are resumed; the thread to | |
6339 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
6340 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 6341 | |
7b68ffbb PA |
6342 | This function issues a strict subset of all possible vCont commands |
6343 | at the moment. */ | |
44eaed12 | 6344 | |
6b8edb51 PA |
6345 | int |
6346 | remote_target::remote_resume_with_vcont (ptid_t ptid, int step, | |
6347 | enum gdb_signal siggnal) | |
506fb367 DJ |
6348 | { |
6349 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
6350 | char *p; |
6351 | char *endp; | |
44eaed12 | 6352 | |
7b68ffbb | 6353 | /* No reverse execution actions defined for vCont. */ |
6b8edb51 | 6354 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6355 | return 0; |
6356 | ||
4082afcc | 6357 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6358 | remote_vcont_probe (); |
44eaed12 | 6359 | |
4082afcc | 6360 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 6361 | return 0; |
44eaed12 | 6362 | |
8d64371b TT |
6363 | p = rs->buf.data (); |
6364 | endp = p + get_remote_packet_size (); | |
82f73884 | 6365 | |
506fb367 DJ |
6366 | /* If we could generate a wider range of packets, we'd have to worry |
6367 | about overflowing BUF. Should there be a generic | |
6368 | "multi-part-packet" packet? */ | |
6369 | ||
0d8f58ca PA |
6370 | p += xsnprintf (p, endp - p, "vCont"); |
6371 | ||
d7e15655 | 6372 | if (ptid == magic_null_ptid) |
c906108c | 6373 | { |
79d7f229 PA |
6374 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
6375 | so we don't have any TID numbers the inferior will | |
6376 | understand. Make sure to only send forms that do not specify | |
6377 | a TID. */ | |
a9cbf802 | 6378 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 6379 | } |
d7e15655 | 6380 | else if (ptid == minus_one_ptid || ptid.is_pid ()) |
506fb367 | 6381 | { |
0d8f58ca PA |
6382 | /* Resume all threads (of all processes, or of a single |
6383 | process), with preference for INFERIOR_PTID. This assumes | |
6384 | inferior_ptid belongs to the set of all threads we are about | |
6385 | to resume. */ | |
a493e3e2 | 6386 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 6387 | { |
0d8f58ca PA |
6388 | /* Step inferior_ptid, with or without signal. */ |
6389 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 6390 | } |
0d8f58ca | 6391 | |
e5ef252a PA |
6392 | /* Also pass down any pending signaled resumption for other |
6393 | threads not the current. */ | |
6394 | p = append_pending_thread_resumptions (p, endp, ptid); | |
6395 | ||
0d8f58ca | 6396 | /* And continue others without a signal. */ |
a493e3e2 | 6397 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
6398 | } |
6399 | else | |
506fb367 DJ |
6400 | { |
6401 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 6402 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 6403 | } |
c906108c | 6404 | |
8d64371b | 6405 | gdb_assert (strlen (rs->buf.data ()) < get_remote_packet_size ()); |
82f73884 | 6406 | putpkt (rs->buf); |
506fb367 | 6407 | |
6efcd9a8 | 6408 | if (target_is_non_stop_p ()) |
74531fed PA |
6409 | { |
6410 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6411 | reply will be reported asynchronously by means of a `%Stop' | |
6412 | notification. */ | |
8d64371b TT |
6413 | getpkt (&rs->buf, 0); |
6414 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6415 | error (_("Unexpected vCont reply in non-stop mode: %s"), | |
6416 | rs->buf.data ()); | |
74531fed PA |
6417 | } |
6418 | ||
506fb367 | 6419 | return 1; |
c906108c | 6420 | } |
43ff13b4 | 6421 | |
506fb367 DJ |
6422 | /* Tell the remote machine to resume. */ |
6423 | ||
f6ac5f3d PA |
6424 | void |
6425 | remote_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal) | |
43ff13b4 | 6426 | { |
d01949b6 | 6427 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6428 | |
85ad3aaf PA |
6429 | /* When connected in non-stop mode, the core resumes threads |
6430 | individually. Resuming remote threads directly in target_resume | |
6431 | would thus result in sending one packet per thread. Instead, to | |
6432 | minimize roundtrip latency, here we just store the resume | |
c9d22089 SM |
6433 | request (put the thread in RESUMED_PENDING_VCONT state); the actual remote |
6434 | resumption will be done in remote_target::commit_resume, where we'll be | |
6435 | able to do vCont action coalescing. */ | |
f6ac5f3d | 6436 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6437 | { |
7aabaf9d | 6438 | remote_thread_info *remote_thr; |
85ad3aaf | 6439 | |
d7e15655 | 6440 | if (minus_one_ptid == ptid || ptid.is_pid ()) |
5b6d1e4f | 6441 | remote_thr = get_remote_thread_info (this, inferior_ptid); |
85ad3aaf | 6442 | else |
5b6d1e4f | 6443 | remote_thr = get_remote_thread_info (this, ptid); |
7aabaf9d | 6444 | |
c9d22089 SM |
6445 | /* We don't expect the core to ask to resume an already resumed (from |
6446 | its point of view) thread. */ | |
a6c11cbb | 6447 | gdb_assert (remote_thr->get_resume_state () == resume_state::NOT_RESUMED); |
c9d22089 SM |
6448 | |
6449 | remote_thr->set_resumed_pending_vcont (step, siggnal); | |
85ad3aaf PA |
6450 | return; |
6451 | } | |
6452 | ||
722247f1 YQ |
6453 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6454 | (explained in remote-notif.c:handle_notification) so | |
6455 | remote_notif_process is not called. We need find a place where | |
6456 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6457 | before resuming inferior, because inferior was stopped and no RSP | |
6458 | traffic at that moment. */ | |
6efcd9a8 | 6459 | if (!target_is_non_stop_p ()) |
5965e028 | 6460 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6461 | |
f6ac5f3d | 6462 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6463 | |
7b68ffbb PA |
6464 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
6465 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
6b8edb51 | 6466 | remote_resume_with_hc (ptid, step, siggnal); |
43ff13b4 | 6467 | |
c9d22089 SM |
6468 | /* Update resumed state tracked by the remote target. */ |
6469 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
6470 | get_remote_thread_info (tp)->set_resumed (); | |
6471 | ||
2acceee2 | 6472 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
6473 | with the event loop. NOTE: this is the one place where all the |
6474 | execution commands end up. We could alternatively do this in each | |
23860348 | 6475 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
6476 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
6477 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 6478 | NOT asynchronously. */ |
362646f5 | 6479 | if (target_can_async_p ()) |
6a3753b3 | 6480 | target_async (1); |
e24a49d8 PA |
6481 | |
6482 | /* We've just told the target to resume. The remote server will | |
6483 | wait for the inferior to stop, and then send a stop reply. In | |
6484 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6485 | because the stub wouldn't be ready to process it. This applies |
6486 | only to the base all-stop protocol, however. In non-stop (which | |
6487 | only supports vCont), the stub replies with an "OK", and is | |
6488 | immediate able to process further serial input. */ | |
6efcd9a8 | 6489 | if (!target_is_non_stop_p ()) |
74531fed | 6490 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6491 | } |
85ad3aaf | 6492 | |
85ad3aaf PA |
6493 | static int is_pending_fork_parent_thread (struct thread_info *thread); |
6494 | ||
6495 | /* Private per-inferior info for target remote processes. */ | |
6496 | ||
089354bb | 6497 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6498 | { |
6499 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6500 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6501 | }; |
6502 | ||
089354bb SM |
6503 | /* Get the remote private inferior data associated to INF. */ |
6504 | ||
6505 | static remote_inferior * | |
6506 | get_remote_inferior (inferior *inf) | |
6507 | { | |
6508 | if (inf->priv == NULL) | |
6509 | inf->priv.reset (new remote_inferior); | |
6510 | ||
6511 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6512 | } | |
6513 | ||
1192f124 SM |
6514 | struct stop_reply : public notif_event |
6515 | { | |
6516 | ~stop_reply (); | |
6517 | ||
6518 | /* The identifier of the thread about this event */ | |
6519 | ptid_t ptid; | |
6520 | ||
6521 | /* The remote state this event is associated with. When the remote | |
6522 | connection, represented by a remote_state object, is closed, | |
6523 | all the associated stop_reply events should be released. */ | |
6524 | struct remote_state *rs; | |
6525 | ||
6526 | struct target_waitstatus ws; | |
6527 | ||
6528 | /* The architecture associated with the expedited registers. */ | |
6529 | gdbarch *arch; | |
6530 | ||
6531 | /* Expedited registers. This makes remote debugging a bit more | |
6532 | efficient for those targets that provide critical registers as | |
6533 | part of their normal status mechanism (as another roundtrip to | |
6534 | fetch them is avoided). */ | |
6535 | std::vector<cached_reg_t> regcache; | |
6536 | ||
6537 | enum target_stop_reason stop_reason; | |
6538 | ||
6539 | CORE_ADDR watch_data_address; | |
6540 | ||
6541 | int core; | |
6542 | }; | |
6543 | ||
f5db4863 | 6544 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6545 | outgoing packet buffer. This is used to send multiple vCont |
6546 | packets if we have more actions than would fit a single packet. */ | |
6547 | ||
f5db4863 | 6548 | class vcont_builder |
85ad3aaf | 6549 | { |
f5db4863 | 6550 | public: |
6b8edb51 PA |
6551 | explicit vcont_builder (remote_target *remote) |
6552 | : m_remote (remote) | |
f5db4863 PA |
6553 | { |
6554 | restart (); | |
6555 | } | |
6556 | ||
6557 | void flush (); | |
6558 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6559 | ||
6560 | private: | |
6561 | void restart (); | |
6562 | ||
6b8edb51 PA |
6563 | /* The remote target. */ |
6564 | remote_target *m_remote; | |
6565 | ||
85ad3aaf PA |
6566 | /* Pointer to the first action. P points here if no action has been |
6567 | appended yet. */ | |
f5db4863 | 6568 | char *m_first_action; |
85ad3aaf PA |
6569 | |
6570 | /* Where the next action will be appended. */ | |
f5db4863 | 6571 | char *m_p; |
85ad3aaf PA |
6572 | |
6573 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6574 | char *m_endp; |
85ad3aaf PA |
6575 | }; |
6576 | ||
6577 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6578 | ||
f5db4863 PA |
6579 | void |
6580 | vcont_builder::restart () | |
85ad3aaf | 6581 | { |
6b8edb51 | 6582 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6583 | |
8d64371b TT |
6584 | m_p = rs->buf.data (); |
6585 | m_endp = m_p + m_remote->get_remote_packet_size (); | |
f5db4863 PA |
6586 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6587 | m_first_action = m_p; | |
85ad3aaf PA |
6588 | } |
6589 | ||
6590 | /* If the vCont packet being built has any action, send it to the | |
6591 | remote end. */ | |
6592 | ||
f5db4863 PA |
6593 | void |
6594 | vcont_builder::flush () | |
85ad3aaf PA |
6595 | { |
6596 | struct remote_state *rs; | |
6597 | ||
f5db4863 | 6598 | if (m_p == m_first_action) |
85ad3aaf PA |
6599 | return; |
6600 | ||
6b8edb51 PA |
6601 | rs = m_remote->get_remote_state (); |
6602 | m_remote->putpkt (rs->buf); | |
8d64371b TT |
6603 | m_remote->getpkt (&rs->buf, 0); |
6604 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6605 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf.data ()); | |
85ad3aaf PA |
6606 | } |
6607 | ||
6608 | /* The largest action is range-stepping, with its two addresses. This | |
6609 | is more than sufficient. If a new, bigger action is created, it'll | |
6610 | quickly trigger a failed assertion in append_resumption (and we'll | |
6611 | just bump this). */ | |
6612 | #define MAX_ACTION_SIZE 200 | |
6613 | ||
6614 | /* Append a new vCont action in the outgoing packet being built. If | |
6615 | the action doesn't fit the packet along with previous actions, push | |
6616 | what we've got so far to the remote end and start over a new vCont | |
6617 | packet (with the new action). */ | |
6618 | ||
f5db4863 PA |
6619 | void |
6620 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6621 | { |
6622 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6623 | |
6b8edb51 PA |
6624 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6625 | ptid, step, siggnal); | |
85ad3aaf PA |
6626 | |
6627 | /* Check whether this new action would fit in the vCont packet along | |
6628 | with previous actions. If not, send what we've got so far and | |
6629 | start a new vCont packet. */ | |
f5db4863 PA |
6630 | size_t rsize = endp - buf; |
6631 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6632 | { |
f5db4863 PA |
6633 | flush (); |
6634 | restart (); | |
85ad3aaf PA |
6635 | |
6636 | /* Should now fit. */ | |
f5db4863 | 6637 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6638 | } |
6639 | ||
f5db4863 PA |
6640 | memcpy (m_p, buf, rsize); |
6641 | m_p += rsize; | |
6642 | *m_p = '\0'; | |
85ad3aaf PA |
6643 | } |
6644 | ||
6645 | /* to_commit_resume implementation. */ | |
6646 | ||
f6ac5f3d | 6647 | void |
1192f124 | 6648 | remote_target::commit_resumed () |
85ad3aaf | 6649 | { |
85ad3aaf PA |
6650 | /* If connected in all-stop mode, we'd send the remote resume |
6651 | request directly from remote_resume. Likewise if | |
6652 | reverse-debugging, as there are no defined vCont actions for | |
6653 | reverse execution. */ | |
f6ac5f3d | 6654 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6655 | return; |
6656 | ||
6657 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6658 | instead of resuming all threads of each process individually. | |
6659 | However, if any thread of a process must remain halted, we can't | |
6660 | send wildcard resumes and must send one action per thread. | |
6661 | ||
6662 | Care must be taken to not resume threads/processes the server | |
6663 | side already told us are stopped, but the core doesn't know about | |
6664 | yet, because the events are still in the vStopped notification | |
6665 | queue. For example: | |
6666 | ||
6667 | #1 => vCont s:p1.1;c | |
6668 | #2 <= OK | |
6669 | #3 <= %Stopped T05 p1.1 | |
6670 | #4 => vStopped | |
6671 | #5 <= T05 p1.2 | |
6672 | #6 => vStopped | |
6673 | #7 <= OK | |
6674 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6675 | #9 => vCont s:p1.1;c | |
6676 | ||
6677 | The last vCont above would resume thread p1.2 by mistake, because | |
6678 | the server has no idea that the event for p1.2 had not been | |
6679 | handled yet. | |
6680 | ||
6681 | The server side must similarly ignore resume actions for the | |
6682 | thread that has a pending %Stopped notification (and any other | |
6683 | threads with events pending), until GDB acks the notification | |
6684 | with vStopped. Otherwise, e.g., the following case is | |
6685 | mishandled: | |
6686 | ||
6687 | #1 => g (or any other packet) | |
6688 | #2 <= [registers] | |
6689 | #3 <= %Stopped T05 p1.2 | |
6690 | #4 => vCont s:p1.1;c | |
6691 | #5 <= OK | |
6692 | ||
6693 | Above, the server must not resume thread p1.2. GDB can't know | |
6694 | that p1.2 stopped until it acks the %Stopped notification, and | |
6695 | since from GDB's perspective all threads should be running, it | |
6696 | sends a "c" action. | |
6697 | ||
6698 | Finally, special care must also be given to handling fork/vfork | |
6699 | events. A (v)fork event actually tells us that two processes | |
6700 | stopped -- the parent and the child. Until we follow the fork, | |
6701 | we must not resume the child. Therefore, if we have a pending | |
6702 | fork follow, we must not send a global wildcard resume action | |
6703 | (vCont;c). We can still send process-wide wildcards though. */ | |
6704 | ||
6705 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
2f63ec5c | 6706 | bool may_global_wildcard_vcont = true; |
85ad3aaf PA |
6707 | |
6708 | /* And assume every process is individually wildcard-able too. */ | |
5b6d1e4f | 6709 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6710 | { |
089354bb SM |
6711 | remote_inferior *priv = get_remote_inferior (inf); |
6712 | ||
6713 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6714 | } |
6715 | ||
6716 | /* Check for any pending events (not reported or processed yet) and | |
6717 | disable process and global wildcard resumes appropriately. */ | |
6718 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6719 | ||
1192f124 SM |
6720 | bool any_pending_vcont_resume = false; |
6721 | ||
5b6d1e4f | 6722 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6723 | { |
c9d22089 SM |
6724 | remote_thread_info *priv = get_remote_thread_info (tp); |
6725 | ||
85ad3aaf PA |
6726 | /* If a thread of a process is not meant to be resumed, then we |
6727 | can't wildcard that process. */ | |
a6c11cbb | 6728 | if (priv->get_resume_state () == resume_state::NOT_RESUMED) |
85ad3aaf | 6729 | { |
089354bb | 6730 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6731 | |
6732 | /* And if we can't wildcard a process, we can't wildcard | |
6733 | everything either. */ | |
2f63ec5c | 6734 | may_global_wildcard_vcont = false; |
85ad3aaf PA |
6735 | continue; |
6736 | } | |
6737 | ||
1192f124 SM |
6738 | if (priv->get_resume_state () == resume_state::RESUMED_PENDING_VCONT) |
6739 | any_pending_vcont_resume = true; | |
6740 | ||
85ad3aaf PA |
6741 | /* If a thread is the parent of an unfollowed fork, then we |
6742 | can't do a global wildcard, as that would resume the fork | |
6743 | child. */ | |
6744 | if (is_pending_fork_parent_thread (tp)) | |
2f63ec5c | 6745 | may_global_wildcard_vcont = false; |
85ad3aaf PA |
6746 | } |
6747 | ||
1192f124 SM |
6748 | /* We didn't have any resumed thread pending a vCont resume, so nothing to |
6749 | do. */ | |
6750 | if (!any_pending_vcont_resume) | |
6751 | return; | |
6752 | ||
85ad3aaf PA |
6753 | /* Now let's build the vCont packet(s). Actions must be appended |
6754 | from narrower to wider scopes (thread -> process -> global). If | |
6755 | we end up with too many actions for a single packet vcont_builder | |
6756 | flushes the current vCont packet to the remote side and starts a | |
6757 | new one. */ | |
6b8edb51 | 6758 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
6759 | |
6760 | /* Threads first. */ | |
5b6d1e4f | 6761 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6762 | { |
7aabaf9d | 6763 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf | 6764 | |
c9d22089 SM |
6765 | /* If the thread was previously vCont-resumed, no need to send a specific |
6766 | action for it. If we didn't receive a resume request for it, don't | |
6767 | send an action for it either. */ | |
a6c11cbb | 6768 | if (remote_thr->get_resume_state () != resume_state::RESUMED_PENDING_VCONT) |
85ad3aaf PA |
6769 | continue; |
6770 | ||
6771 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6772 | ||
1192f124 SM |
6773 | /* We should never be commit-resuming a thread that has a stop reply. |
6774 | Otherwise, we would end up reporting a stop event for a thread while | |
6775 | it is running on the remote target. */ | |
6776 | remote_state *rs = get_remote_state (); | |
6777 | for (const auto &stop_reply : rs->stop_reply_queue) | |
6778 | gdb_assert (stop_reply->ptid != tp->ptid); | |
6779 | ||
c9d22089 SM |
6780 | const resumed_pending_vcont_info &info |
6781 | = remote_thr->resumed_pending_vcont_info (); | |
85ad3aaf | 6782 | |
c9d22089 SM |
6783 | /* Check if we need to send a specific action for this thread. If not, |
6784 | it will be included in a wildcard resume instead. */ | |
6785 | if (info.step || info.sig != GDB_SIGNAL_0 | |
6786 | || !get_remote_inferior (tp->inf)->may_wildcard_vcont) | |
6787 | vcont_builder.push_action (tp->ptid, info.step, info.sig); | |
6788 | ||
6789 | remote_thr->set_resumed (); | |
85ad3aaf PA |
6790 | } |
6791 | ||
6792 | /* Now check whether we can send any process-wide wildcard. This is | |
6793 | to avoid sending a global wildcard in the case nothing is | |
6794 | supposed to be resumed. */ | |
2f63ec5c | 6795 | bool any_process_wildcard = false; |
85ad3aaf | 6796 | |
5b6d1e4f | 6797 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6798 | { |
089354bb | 6799 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6800 | { |
2f63ec5c | 6801 | any_process_wildcard = true; |
85ad3aaf PA |
6802 | break; |
6803 | } | |
6804 | } | |
6805 | ||
6806 | if (any_process_wildcard) | |
6807 | { | |
6808 | /* If all processes are wildcard-able, then send a single "c" | |
6809 | action, otherwise, send an "all (-1) threads of process" | |
6810 | continue action for each running process, if any. */ | |
6811 | if (may_global_wildcard_vcont) | |
6812 | { | |
f5db4863 PA |
6813 | vcont_builder.push_action (minus_one_ptid, |
6814 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6815 | } |
6816 | else | |
6817 | { | |
5b6d1e4f | 6818 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6819 | { |
089354bb | 6820 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6821 | { |
f2907e49 | 6822 | vcont_builder.push_action (ptid_t (inf->pid), |
f5db4863 | 6823 | false, GDB_SIGNAL_0); |
85ad3aaf PA |
6824 | } |
6825 | } | |
6826 | } | |
6827 | } | |
6828 | ||
f5db4863 | 6829 | vcont_builder.flush (); |
85ad3aaf PA |
6830 | } |
6831 | ||
b4b1a226 SM |
6832 | /* Implementation of target_has_pending_events. */ |
6833 | ||
6834 | bool | |
6835 | remote_target::has_pending_events () | |
6836 | { | |
6837 | if (target_can_async_p ()) | |
6838 | { | |
6839 | remote_state *rs = get_remote_state (); | |
6840 | ||
6841 | if (async_event_handler_marked (rs->remote_async_inferior_event_token)) | |
6842 | return true; | |
6843 | ||
6844 | /* Note that BUFCNT can be negative, indicating sticky | |
6845 | error. */ | |
6846 | if (rs->remote_desc->bufcnt != 0) | |
6847 | return true; | |
6848 | } | |
6849 | return false; | |
6850 | } | |
6851 | ||
c906108c | 6852 | \f |
43ff13b4 | 6853 | |
74531fed PA |
6854 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6855 | thread, all threads of a remote process, or all threads of all | |
6856 | processes. */ | |
6857 | ||
6b8edb51 PA |
6858 | void |
6859 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
6860 | { |
6861 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6862 | char *p = rs->buf.data (); |
6863 | char *endp = p + get_remote_packet_size (); | |
74531fed | 6864 | |
1192f124 SM |
6865 | /* If any thread that needs to stop was resumed but pending a vCont |
6866 | resume, generate a phony stop_reply. However, first check | |
6867 | whether the thread wasn't resumed with a signal. Generating a | |
6868 | phony stop in that case would result in losing the signal. */ | |
6869 | bool needs_commit = false; | |
6870 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
6871 | { | |
6872 | remote_thread_info *remote_thr = get_remote_thread_info (tp); | |
6873 | ||
6874 | if (remote_thr->get_resume_state () | |
6875 | == resume_state::RESUMED_PENDING_VCONT) | |
6876 | { | |
6877 | const resumed_pending_vcont_info &info | |
6878 | = remote_thr->resumed_pending_vcont_info (); | |
6879 | if (info.sig != GDB_SIGNAL_0) | |
6880 | { | |
6881 | /* This signal must be forwarded to the inferior. We | |
6882 | could commit-resume just this thread, but its simpler | |
6883 | to just commit-resume everything. */ | |
6884 | needs_commit = true; | |
6885 | break; | |
6886 | } | |
6887 | } | |
6888 | } | |
6889 | ||
6890 | if (needs_commit) | |
6891 | commit_resumed (); | |
6892 | else | |
6893 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
6894 | { | |
6895 | remote_thread_info *remote_thr = get_remote_thread_info (tp); | |
6896 | ||
6897 | if (remote_thr->get_resume_state () | |
6898 | == resume_state::RESUMED_PENDING_VCONT) | |
6899 | { | |
6900 | remote_debug_printf ("Enqueueing phony stop reply for thread pending " | |
6901 | "vCont-resume (%d, %ld, %ld)", tp->ptid.pid(), | |
6902 | tp->ptid.lwp (), tp->ptid.tid ()); | |
6903 | ||
6904 | /* Check that the thread wasn't resumed with a signal. | |
6905 | Generating a phony stop would result in losing the | |
6906 | signal. */ | |
6907 | const resumed_pending_vcont_info &info | |
6908 | = remote_thr->resumed_pending_vcont_info (); | |
6909 | gdb_assert (info.sig == GDB_SIGNAL_0); | |
6910 | ||
6911 | stop_reply *sr = new stop_reply (); | |
6912 | sr->ptid = tp->ptid; | |
6913 | sr->rs = rs; | |
6914 | sr->ws.kind = TARGET_WAITKIND_STOPPED; | |
6915 | sr->ws.value.sig = GDB_SIGNAL_0; | |
6916 | sr->arch = tp->inf->gdbarch; | |
6917 | sr->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6918 | sr->watch_data_address = 0; | |
6919 | sr->core = 0; | |
6920 | this->push_stop_reply (sr); | |
6921 | ||
6922 | /* Pretend that this thread was actually resumed on the | |
6923 | remote target, then stopped. If we leave it in the | |
6924 | RESUMED_PENDING_VCONT state and the commit_resumed | |
6925 | method is called while the stop reply is still in the | |
6926 | queue, we'll end up reporting a stop event to the core | |
6927 | for that thread while it is running on the remote | |
6928 | target... that would be bad. */ | |
6929 | remote_thr->set_resumed (); | |
6930 | } | |
6931 | } | |
6932 | ||
5b6d1e4f PA |
6933 | /* FIXME: This supports_vCont_probed check is a workaround until |
6934 | packet_support is per-connection. */ | |
6935 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN | |
6936 | || !rs->supports_vCont_probed) | |
6b8edb51 | 6937 | remote_vcont_probe (); |
74531fed | 6938 | |
d458bd84 | 6939 | if (!rs->supports_vCont.t) |
74531fed PA |
6940 | error (_("Remote server does not support stopping threads")); |
6941 | ||
d7e15655 | 6942 | if (ptid == minus_one_ptid |
0e998d96 | 6943 | || (!remote_multi_process_p (rs) && ptid.is_pid ())) |
74531fed PA |
6944 | p += xsnprintf (p, endp - p, "vCont;t"); |
6945 | else | |
6946 | { | |
6947 | ptid_t nptid; | |
6948 | ||
74531fed PA |
6949 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6950 | ||
0e998d96 | 6951 | if (ptid.is_pid ()) |
74531fed | 6952 | /* All (-1) threads of process. */ |
e99b03dc | 6953 | nptid = ptid_t (ptid.pid (), -1, 0); |
74531fed PA |
6954 | else |
6955 | { | |
6956 | /* Small optimization: if we already have a stop reply for | |
6957 | this thread, no use in telling the stub we want this | |
6958 | stopped. */ | |
6959 | if (peek_stop_reply (ptid)) | |
6960 | return; | |
6961 | ||
6962 | nptid = ptid; | |
6963 | } | |
6964 | ||
a9cbf802 | 6965 | write_ptid (p, endp, nptid); |
74531fed PA |
6966 | } |
6967 | ||
6968 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6969 | come in asynchronously by notification. */ | |
6970 | putpkt (rs->buf); | |
8d64371b TT |
6971 | getpkt (&rs->buf, 0); |
6972 | if (strcmp (rs->buf.data (), "OK") != 0) | |
a068643d | 6973 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid).c_str (), |
8d64371b | 6974 | rs->buf.data ()); |
74531fed PA |
6975 | } |
6976 | ||
bfedc46a PA |
6977 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6978 | interrupt the remote target. It is undefined which thread of which | |
6979 | process reports the interrupt. */ | |
74531fed | 6980 | |
6b8edb51 PA |
6981 | void |
6982 | remote_target::remote_interrupt_as () | |
74531fed PA |
6983 | { |
6984 | struct remote_state *rs = get_remote_state (); | |
6985 | ||
3a29589a DJ |
6986 | rs->ctrlc_pending_p = 1; |
6987 | ||
74531fed PA |
6988 | /* If the inferior is stopped already, but the core didn't know |
6989 | about it yet, just ignore the request. The cached wait status | |
6990 | will be collected in remote_wait. */ | |
6991 | if (rs->cached_wait_status) | |
6992 | return; | |
6993 | ||
9a7071a8 JB |
6994 | /* Send interrupt_sequence to remote target. */ |
6995 | send_interrupt_sequence (); | |
74531fed PA |
6996 | } |
6997 | ||
de979965 PA |
6998 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6999 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
7000 | reports the interrupt. Throws an error if the packet is not |
7001 | supported by the server. */ | |
de979965 | 7002 | |
6b8edb51 PA |
7003 | void |
7004 | remote_target::remote_interrupt_ns () | |
de979965 PA |
7005 | { |
7006 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
7007 | char *p = rs->buf.data (); |
7008 | char *endp = p + get_remote_packet_size (); | |
de979965 PA |
7009 | |
7010 | xsnprintf (p, endp - p, "vCtrlC"); | |
7011 | ||
7012 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
7013 | come in asynchronously by notification. */ | |
7014 | putpkt (rs->buf); | |
8d64371b | 7015 | getpkt (&rs->buf, 0); |
de979965 PA |
7016 | |
7017 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
7018 | { | |
7019 | case PACKET_OK: | |
7020 | break; | |
7021 | case PACKET_UNKNOWN: | |
e42de8c7 | 7022 | error (_("No support for interrupting the remote target.")); |
de979965 | 7023 | case PACKET_ERROR: |
8d64371b | 7024 | error (_("Interrupting target failed: %s"), rs->buf.data ()); |
de979965 | 7025 | } |
de979965 PA |
7026 | } |
7027 | ||
bfedc46a | 7028 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 7029 | |
f6ac5f3d PA |
7030 | void |
7031 | remote_target::stop (ptid_t ptid) | |
c906108c | 7032 | { |
2189c312 | 7033 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
c906108c | 7034 | |
6efcd9a8 | 7035 | if (target_is_non_stop_p ()) |
74531fed | 7036 | remote_stop_ns (ptid); |
c906108c | 7037 | else |
bfedc46a PA |
7038 | { |
7039 | /* We don't currently have a way to transparently pause the | |
7040 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 7041 | remote_interrupt_as (); |
bfedc46a PA |
7042 | } |
7043 | } | |
7044 | ||
7045 | /* Implement the to_interrupt function for the remote targets. */ | |
7046 | ||
f6ac5f3d PA |
7047 | void |
7048 | remote_target::interrupt () | |
bfedc46a | 7049 | { |
2189c312 | 7050 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
bfedc46a | 7051 | |
e42de8c7 PA |
7052 | if (target_is_non_stop_p ()) |
7053 | remote_interrupt_ns (); | |
bfedc46a | 7054 | else |
e42de8c7 | 7055 | remote_interrupt_as (); |
c906108c SS |
7056 | } |
7057 | ||
93692b58 PA |
7058 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
7059 | ||
f6ac5f3d PA |
7060 | void |
7061 | remote_target::pass_ctrlc () | |
93692b58 | 7062 | { |
2189c312 | 7063 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
93692b58 | 7064 | |
2189c312 | 7065 | struct remote_state *rs = get_remote_state (); |
93692b58 PA |
7066 | |
7067 | /* If we're starting up, we're not fully synced yet. Quit | |
7068 | immediately. */ | |
7069 | if (rs->starting_up) | |
7070 | quit (); | |
7071 | /* If ^C has already been sent once, offer to disconnect. */ | |
7072 | else if (rs->ctrlc_pending_p) | |
7073 | interrupt_query (); | |
7074 | else | |
e671cd59 | 7075 | target_interrupt (); |
93692b58 PA |
7076 | } |
7077 | ||
c906108c SS |
7078 | /* Ask the user what to do when an interrupt is received. */ |
7079 | ||
6b8edb51 PA |
7080 | void |
7081 | remote_target::interrupt_query () | |
c906108c | 7082 | { |
abc56d60 | 7083 | struct remote_state *rs = get_remote_state (); |
c906108c | 7084 | |
abc56d60 | 7085 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 7086 | { |
abc56d60 PA |
7087 | if (query (_("The target is not responding to interrupt requests.\n" |
7088 | "Stop debugging it? "))) | |
74531fed | 7089 | { |
5b6d1e4f | 7090 | remote_unpush_target (this); |
abc56d60 | 7091 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
7092 | } |
7093 | } | |
abc56d60 PA |
7094 | else |
7095 | { | |
7096 | if (query (_("Interrupted while waiting for the program.\n" | |
7097 | "Give up waiting? "))) | |
7098 | quit (); | |
7099 | } | |
c906108c SS |
7100 | } |
7101 | ||
6426a772 JM |
7102 | /* Enable/disable target terminal ownership. Most targets can use |
7103 | terminal groups to control terminal ownership. Remote targets are | |
7104 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 7105 | is required. */ |
6426a772 | 7106 | |
f6ac5f3d PA |
7107 | void |
7108 | remote_target::terminal_inferior () | |
6426a772 | 7109 | { |
6426a772 JM |
7110 | /* NOTE: At this point we could also register our selves as the |
7111 | recipient of all input. Any characters typed could then be | |
23860348 | 7112 | passed on down to the target. */ |
6426a772 JM |
7113 | } |
7114 | ||
f6ac5f3d PA |
7115 | void |
7116 | remote_target::terminal_ours () | |
6426a772 | 7117 | { |
6426a772 JM |
7118 | } |
7119 | ||
176a6961 | 7120 | static void |
05be00a8 | 7121 | remote_console_output (const char *msg) |
c906108c | 7122 | { |
05be00a8 | 7123 | const char *p; |
c906108c | 7124 | |
c5aa993b | 7125 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
7126 | { |
7127 | char tb[2]; | |
7128 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 7129 | |
c906108c SS |
7130 | tb[0] = c; |
7131 | tb[1] = 0; | |
da5bd37e | 7132 | gdb_stdtarg->puts (tb); |
c906108c | 7133 | } |
da5bd37e | 7134 | gdb_stdtarg->flush (); |
00db5b94 | 7135 | } |
74531fed | 7136 | |
221e1a37 PA |
7137 | /* Return the length of the stop reply queue. */ |
7138 | ||
6b8edb51 PA |
7139 | int |
7140 | remote_target::stop_reply_queue_length () | |
221e1a37 | 7141 | { |
6b8edb51 | 7142 | remote_state *rs = get_remote_state (); |
953edf2b | 7143 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
7144 | } |
7145 | ||
cb8c24b6 | 7146 | static void |
6b8edb51 | 7147 | remote_notif_stop_parse (remote_target *remote, |
bb277751 | 7148 | struct notif_client *self, const char *buf, |
722247f1 YQ |
7149 | struct notif_event *event) |
7150 | { | |
6b8edb51 | 7151 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
7152 | } |
7153 | ||
7154 | static void | |
6b8edb51 | 7155 | remote_notif_stop_ack (remote_target *remote, |
bb277751 | 7156 | struct notif_client *self, const char *buf, |
722247f1 YQ |
7157 | struct notif_event *event) |
7158 | { | |
7159 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
7160 | ||
7161 | /* acknowledge */ | |
6b8edb51 | 7162 | putpkt (remote, self->ack_command); |
722247f1 | 7163 | |
b0083dd7 PA |
7164 | /* Kind can be TARGET_WAITKIND_IGNORE if we have meanwhile discarded |
7165 | the notification. It was left in the queue because we need to | |
7166 | acknowledge it and pull the rest of the notifications out. */ | |
7167 | if (stop_reply->ws.kind != TARGET_WAITKIND_IGNORE) | |
7168 | remote->push_stop_reply (stop_reply); | |
722247f1 YQ |
7169 | } |
7170 | ||
7171 | static int | |
6b8edb51 PA |
7172 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
7173 | struct notif_client *self) | |
722247f1 YQ |
7174 | { |
7175 | /* We can't get pending events in remote_notif_process for | |
7176 | notification stop, and we have to do this in remote_wait_ns | |
7177 | instead. If we fetch all queued events from stub, remote stub | |
7178 | may exit and we have no chance to process them back in | |
7179 | remote_wait_ns. */ | |
6b8edb51 PA |
7180 | remote_state *rs = remote->get_remote_state (); |
7181 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
722247f1 YQ |
7182 | return 0; |
7183 | } | |
7184 | ||
32603266 | 7185 | stop_reply::~stop_reply () |
722247f1 | 7186 | { |
32603266 TT |
7187 | for (cached_reg_t ® : regcache) |
7188 | xfree (reg.data); | |
722247f1 YQ |
7189 | } |
7190 | ||
32603266 TT |
7191 | static notif_event_up |
7192 | remote_notif_stop_alloc_reply () | |
722247f1 | 7193 | { |
32603266 | 7194 | return notif_event_up (new struct stop_reply ()); |
722247f1 YQ |
7195 | } |
7196 | ||
7197 | /* A client of notification Stop. */ | |
7198 | ||
7199 | struct notif_client notif_client_stop = | |
7200 | { | |
7201 | "Stop", | |
7202 | "vStopped", | |
7203 | remote_notif_stop_parse, | |
7204 | remote_notif_stop_ack, | |
7205 | remote_notif_stop_can_get_pending_events, | |
7206 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 7207 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
7208 | }; |
7209 | ||
85ad3aaf | 7210 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
7211 | the pid of the process that owns the threads we want to check, or |
7212 | -1 if we want to check all threads. */ | |
7213 | ||
7214 | static int | |
7215 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
7216 | ptid_t thread_ptid) | |
7217 | { | |
7218 | if (ws->kind == TARGET_WAITKIND_FORKED | |
7219 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
7220 | { | |
e99b03dc | 7221 | if (event_pid == -1 || event_pid == thread_ptid.pid ()) |
cbb8991c DB |
7222 | return 1; |
7223 | } | |
7224 | ||
7225 | return 0; | |
7226 | } | |
7227 | ||
85ad3aaf PA |
7228 | /* Return the thread's pending status used to determine whether the |
7229 | thread is a fork parent stopped at a fork event. */ | |
7230 | ||
7231 | static struct target_waitstatus * | |
7232 | thread_pending_fork_status (struct thread_info *thread) | |
7233 | { | |
7234 | if (thread->suspend.waitstatus_pending_p) | |
7235 | return &thread->suspend.waitstatus; | |
7236 | else | |
7237 | return &thread->pending_follow; | |
7238 | } | |
7239 | ||
7240 | /* Determine if THREAD is a pending fork parent thread. */ | |
7241 | ||
7242 | static int | |
7243 | is_pending_fork_parent_thread (struct thread_info *thread) | |
7244 | { | |
7245 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
7246 | int pid = -1; | |
7247 | ||
7248 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
7249 | } | |
7250 | ||
cbb8991c DB |
7251 | /* If CONTEXT contains any fork child threads that have not been |
7252 | reported yet, remove them from the CONTEXT list. If such a | |
7253 | thread exists it is because we are stopped at a fork catchpoint | |
7254 | and have not yet called follow_fork, which will set up the | |
7255 | host-side data structures for the new process. */ | |
7256 | ||
6b8edb51 PA |
7257 | void |
7258 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c | 7259 | { |
cbb8991c DB |
7260 | int pid = -1; |
7261 | struct notif_client *notif = ¬if_client_stop; | |
cbb8991c DB |
7262 | |
7263 | /* For any threads stopped at a fork event, remove the corresponding | |
7264 | fork child threads from the CONTEXT list. */ | |
5b6d1e4f | 7265 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c | 7266 | { |
85ad3aaf | 7267 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
7268 | |
7269 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 7270 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
7271 | } |
7272 | ||
7273 | /* Check for any pending fork events (not reported or processed yet) | |
7274 | in process PID and remove those fork child threads from the | |
7275 | CONTEXT list as well. */ | |
7276 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7277 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7278 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
7279 | || event->ws.kind == TARGET_WAITKIND_VFORKED | |
7280 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
7281 | context->remove_thread (event->ws.value.related_pid); | |
85ad3aaf PA |
7282 | } |
7283 | ||
2f63ec5c AB |
7284 | /* Check whether any event pending in the vStopped queue would prevent a |
7285 | global or process wildcard vCont action. Set *may_global_wildcard to | |
7286 | false if we can't do a global wildcard (vCont;c), and clear the event | |
7287 | inferior's may_wildcard_vcont flag if we can't do a process-wide | |
7288 | wildcard resume (vCont;c:pPID.-1). */ | |
85ad3aaf | 7289 | |
6b8edb51 PA |
7290 | void |
7291 | remote_target::check_pending_events_prevent_wildcard_vcont | |
2f63ec5c | 7292 | (bool *may_global_wildcard) |
85ad3aaf PA |
7293 | { |
7294 | struct notif_client *notif = ¬if_client_stop; | |
7295 | ||
7296 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7297 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7298 | { | |
7299 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
7300 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
7301 | continue; | |
85ad3aaf | 7302 | |
953edf2b TT |
7303 | if (event->ws.kind == TARGET_WAITKIND_FORKED |
7304 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
2f63ec5c | 7305 | *may_global_wildcard = false; |
722247f1 | 7306 | |
953edf2b TT |
7307 | /* This may be the first time we heard about this process. |
7308 | Regardless, we must not do a global wildcard resume, otherwise | |
7309 | we'd resume this process too. */ | |
2f63ec5c | 7310 | *may_global_wildcard = false; |
323fd5b9 PA |
7311 | if (event->ptid != null_ptid) |
7312 | { | |
7313 | inferior *inf = find_inferior_ptid (this, event->ptid); | |
7314 | if (inf != NULL) | |
7315 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
7316 | } | |
722247f1 | 7317 | } |
722247f1 YQ |
7318 | } |
7319 | ||
f48ff2a7 | 7320 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7321 | |
6b8edb51 PA |
7322 | void |
7323 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7324 | { |
f48ff2a7 YQ |
7325 | struct stop_reply *reply; |
7326 | struct remote_state *rs = get_remote_state (); | |
7327 | struct remote_notif_state *rns = rs->notif_state; | |
7328 | ||
7329 | /* This function can be notified when an inferior exists. When the | |
7330 | target is not remote, the notification state is NULL. */ | |
7331 | if (rs->remote_desc == NULL) | |
7332 | return; | |
7333 | ||
7334 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7335 | |
74531fed | 7336 | /* Discard the in-flight notification. */ |
e99b03dc | 7337 | if (reply != NULL && reply->ptid.pid () == inf->pid) |
74531fed | 7338 | { |
b0083dd7 PA |
7339 | /* Leave the notification pending, since the server expects that |
7340 | we acknowledge it with vStopped. But clear its contents, so | |
7341 | that later on when we acknowledge it, we also discard it. */ | |
7342 | reply->ws.kind = TARGET_WAITKIND_IGNORE; | |
7343 | ||
7344 | if (remote_debug) | |
7345 | fprintf_unfiltered (gdb_stdlog, | |
7346 | "discarded in-flight notification\n"); | |
74531fed | 7347 | } |
c906108c | 7348 | |
74531fed PA |
7349 | /* Discard the stop replies we have already pulled with |
7350 | vStopped. */ | |
953edf2b TT |
7351 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7352 | rs->stop_reply_queue.end (), | |
7353 | [=] (const stop_reply_up &event) | |
7354 | { | |
7355 | return event->ptid.pid () == inf->pid; | |
7356 | }); | |
7357 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
bcc75809 YQ |
7358 | } |
7359 | ||
7360 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7361 | |
6b8edb51 PA |
7362 | void |
7363 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7364 | { |
6b8edb51 | 7365 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7366 | |
f48ff2a7 YQ |
7367 | /* Discard the stop replies we have already pulled with |
7368 | vStopped. */ | |
953edf2b TT |
7369 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7370 | rs->stop_reply_queue.end (), | |
7371 | [=] (const stop_reply_up &event) | |
7372 | { | |
7373 | return event->rs == rs; | |
7374 | }); | |
7375 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7376 | } |
43ff13b4 | 7377 | |
722247f1 YQ |
7378 | /* Remove the first reply in 'stop_reply_queue' which matches |
7379 | PTID. */ | |
2e9f7625 | 7380 | |
6b8edb51 PA |
7381 | struct stop_reply * |
7382 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7383 | { |
953edf2b | 7384 | remote_state *rs = get_remote_state (); |
722247f1 | 7385 | |
953edf2b TT |
7386 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7387 | rs->stop_reply_queue.end (), | |
7388 | [=] (const stop_reply_up &event) | |
7389 | { | |
7390 | return event->ptid.matches (ptid); | |
7391 | }); | |
7392 | struct stop_reply *result; | |
7393 | if (iter == rs->stop_reply_queue.end ()) | |
7394 | result = nullptr; | |
7395 | else | |
7396 | { | |
7397 | result = iter->release (); | |
7398 | rs->stop_reply_queue.erase (iter); | |
7399 | } | |
722247f1 | 7400 | |
722247f1 YQ |
7401 | if (notif_debug) |
7402 | fprintf_unfiltered (gdb_stdlog, | |
7403 | "notif: discard queued event: 'Stop' in %s\n", | |
a068643d | 7404 | target_pid_to_str (ptid).c_str ()); |
a744cf53 | 7405 | |
953edf2b | 7406 | return result; |
74531fed | 7407 | } |
75c99385 | 7408 | |
74531fed PA |
7409 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7410 | remove it from the queue, and return it. Returns NULL if none is | |
7411 | found. If there are still queued events left to process, tell the | |
7412 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7413 | |
6b8edb51 PA |
7414 | struct stop_reply * |
7415 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7416 | { |
953edf2b | 7417 | remote_state *rs = get_remote_state (); |
722247f1 | 7418 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7419 | |
953edf2b | 7420 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7421 | { |
6b8edb51 PA |
7422 | /* There's still at least an event left. */ |
7423 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
7424 | } | |
74531fed | 7425 | |
722247f1 | 7426 | return r; |
74531fed PA |
7427 | } |
7428 | ||
7429 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7430 | know that we now have at least one queued event left to pass to the | |
7431 | core side, tell the event loop to get back to target_wait soon. */ | |
7432 | ||
6b8edb51 PA |
7433 | void |
7434 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7435 | { |
6b8edb51 | 7436 | remote_state *rs = get_remote_state (); |
953edf2b | 7437 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7438 | |
722247f1 YQ |
7439 | if (notif_debug) |
7440 | fprintf_unfiltered (gdb_stdlog, | |
7441 | "notif: push 'Stop' %s to queue %d\n", | |
a068643d | 7442 | target_pid_to_str (new_event->ptid).c_str (), |
953edf2b | 7443 | int (rs->stop_reply_queue.size ())); |
74531fed | 7444 | |
6b8edb51 | 7445 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
74531fed PA |
7446 | } |
7447 | ||
7448 | /* Returns true if we have a stop reply for PTID. */ | |
7449 | ||
6b8edb51 PA |
7450 | int |
7451 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7452 | { |
6b8edb51 | 7453 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7454 | for (auto &event : rs->stop_reply_queue) |
7455 | if (ptid == event->ptid | |
7456 | && event->ws.kind == TARGET_WAITKIND_STOPPED) | |
7457 | return 1; | |
7458 | return 0; | |
74531fed PA |
7459 | } |
7460 | ||
26d56a93 SL |
7461 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7462 | starting with P and ending with PEND matches PREFIX. */ | |
7463 | ||
7464 | static int | |
7465 | strprefix (const char *p, const char *pend, const char *prefix) | |
7466 | { | |
7467 | for ( ; p < pend; p++, prefix++) | |
7468 | if (*p != *prefix) | |
7469 | return 0; | |
7470 | return *prefix == '\0'; | |
7471 | } | |
7472 | ||
74531fed PA |
7473 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7474 | result is stored in EVENT, or throws an error. */ | |
7475 | ||
6b8edb51 | 7476 | void |
bb277751 | 7477 | remote_target::remote_parse_stop_reply (const char *buf, stop_reply *event) |
74531fed | 7478 | { |
5cd63fda | 7479 | remote_arch_state *rsa = NULL; |
74531fed | 7480 | ULONGEST addr; |
256642e8 | 7481 | const char *p; |
94585166 | 7482 | int skipregs = 0; |
74531fed PA |
7483 | |
7484 | event->ptid = null_ptid; | |
bcc75809 | 7485 | event->rs = get_remote_state (); |
74531fed PA |
7486 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
7487 | event->ws.value.integer = 0; | |
f7e6eed5 | 7488 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
32603266 | 7489 | event->regcache.clear (); |
dc146f7c | 7490 | event->core = -1; |
74531fed PA |
7491 | |
7492 | switch (buf[0]) | |
7493 | { | |
7494 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7495 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7496 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7497 | ss = signal number | |
7498 | n... = register number | |
7499 | r... = register contents | |
7500 | */ | |
7501 | ||
7502 | p = &buf[3]; /* after Txx */ | |
7503 | while (*p) | |
7504 | { | |
256642e8 | 7505 | const char *p1; |
cea39f65 | 7506 | int fieldsize; |
43ff13b4 | 7507 | |
1f10ba14 PA |
7508 | p1 = strchr (p, ':'); |
7509 | if (p1 == NULL) | |
7510 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7511 | Packet: '%s'\n"), | |
7512 | p, buf); | |
7513 | if (p == p1) | |
7514 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7515 | Packet: '%s'\n"), | |
7516 | p, buf); | |
3c3bea1c | 7517 | |
1f10ba14 PA |
7518 | /* Some "registers" are actually extended stop information. |
7519 | Note if you're adding a new entry here: GDB 7.9 and | |
7520 | earlier assume that all register "numbers" that start | |
7521 | with an hex digit are real register numbers. Make sure | |
7522 | the server only sends such a packet if it knows the | |
7523 | client understands it. */ | |
c8e38a49 | 7524 | |
26d56a93 | 7525 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7526 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7527 | else if (strprefix (p, p1, "syscall_entry")) |
7528 | { | |
7529 | ULONGEST sysno; | |
7530 | ||
7531 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
7532 | p = unpack_varlen_hex (++p1, &sysno); | |
7533 | event->ws.value.syscall_number = (int) sysno; | |
7534 | } | |
7535 | else if (strprefix (p, p1, "syscall_return")) | |
7536 | { | |
7537 | ULONGEST sysno; | |
7538 | ||
7539 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
7540 | p = unpack_varlen_hex (++p1, &sysno); | |
7541 | event->ws.value.syscall_number = (int) sysno; | |
7542 | } | |
26d56a93 SL |
7543 | else if (strprefix (p, p1, "watch") |
7544 | || strprefix (p, p1, "rwatch") | |
7545 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7546 | { |
f7e6eed5 | 7547 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7548 | p = unpack_varlen_hex (++p1, &addr); |
7549 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7550 | } |
26d56a93 | 7551 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7552 | { |
7553 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7554 | ||
7555 | /* Make sure the stub doesn't forget to indicate support | |
7556 | with qSupported. */ | |
7557 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7558 | error (_("Unexpected swbreak stop reason")); | |
7559 | ||
7560 | /* The value part is documented as "must be empty", | |
7561 | though we ignore it, in case we ever decide to make | |
7562 | use of it in a backward compatible way. */ | |
8424cc97 | 7563 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7564 | } |
26d56a93 | 7565 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7566 | { |
7567 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7568 | ||
7569 | /* Make sure the stub doesn't forget to indicate support | |
7570 | with qSupported. */ | |
7571 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7572 | error (_("Unexpected hwbreak stop reason")); | |
7573 | ||
7574 | /* See above. */ | |
8424cc97 | 7575 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7576 | } |
26d56a93 | 7577 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7578 | { |
1f10ba14 | 7579 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 7580 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7581 | } |
26d56a93 | 7582 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
7583 | { |
7584 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
7585 | /* p1 will indicate "begin" or "end", but it makes | |
7586 | no difference for now, so ignore it. */ | |
8424cc97 | 7587 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7588 | } |
26d56a93 | 7589 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7590 | { |
7591 | ULONGEST c; | |
a744cf53 | 7592 | |
1f10ba14 PA |
7593 | p = unpack_varlen_hex (++p1, &c); |
7594 | event->core = c; | |
cea39f65 | 7595 | } |
26d56a93 | 7596 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
7597 | { |
7598 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7599 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
7600 | } | |
26d56a93 | 7601 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
7602 | { |
7603 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7604 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
7605 | } | |
26d56a93 | 7606 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
7607 | { |
7608 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 7609 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7610 | } |
6ab24463 | 7611 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7612 | { |
7613 | ULONGEST ignored; | |
94585166 DB |
7614 | int pathlen; |
7615 | ||
7616 | /* Determine the length of the execd pathname. */ | |
7617 | p = unpack_varlen_hex (++p1, &ignored); | |
7618 | pathlen = (p - p1) / 2; | |
7619 | ||
7620 | /* Save the pathname for event reporting and for | |
7621 | the next run command. */ | |
c6321f19 TT |
7622 | gdb::unique_xmalloc_ptr<char[]> pathname |
7623 | ((char *) xmalloc (pathlen + 1)); | |
7624 | hex2bin (p1, (gdb_byte *) pathname.get (), pathlen); | |
94585166 DB |
7625 | pathname[pathlen] = '\0'; |
7626 | ||
7627 | /* This is freed during event handling. */ | |
c6321f19 | 7628 | event->ws.value.execd_pathname = pathname.release (); |
94585166 DB |
7629 | event->ws.kind = TARGET_WAITKIND_EXECD; |
7630 | ||
7631 | /* Skip the registers included in this packet, since | |
7632 | they may be for an architecture different from the | |
7633 | one used by the original program. */ | |
7634 | skipregs = 1; | |
7635 | } | |
65706a29 PA |
7636 | else if (strprefix (p, p1, "create")) |
7637 | { | |
7638 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 7639 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7640 | } |
cea39f65 MS |
7641 | else |
7642 | { | |
1f10ba14 | 7643 | ULONGEST pnum; |
256642e8 | 7644 | const char *p_temp; |
1f10ba14 | 7645 | |
94585166 DB |
7646 | if (skipregs) |
7647 | { | |
8424cc97 | 7648 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7649 | p++; |
7650 | continue; | |
7651 | } | |
7652 | ||
1f10ba14 PA |
7653 | /* Maybe a real ``P'' register number. */ |
7654 | p_temp = unpack_varlen_hex (p, &pnum); | |
7655 | /* If the first invalid character is the colon, we got a | |
7656 | register number. Otherwise, it's an unknown stop | |
7657 | reason. */ | |
7658 | if (p_temp == p1) | |
7659 | { | |
5cd63fda PA |
7660 | /* If we haven't parsed the event's thread yet, find |
7661 | it now, in order to find the architecture of the | |
7662 | reported expedited registers. */ | |
7663 | if (event->ptid == null_ptid) | |
7664 | { | |
24ed6739 AB |
7665 | /* If there is no thread-id information then leave |
7666 | the event->ptid as null_ptid. Later in | |
7667 | process_stop_reply we will pick a suitable | |
7668 | thread. */ | |
5cd63fda PA |
7669 | const char *thr = strstr (p1 + 1, ";thread:"); |
7670 | if (thr != NULL) | |
7671 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7672 | NULL); | |
5cd63fda PA |
7673 | } |
7674 | ||
7675 | if (rsa == NULL) | |
7676 | { | |
5b6d1e4f PA |
7677 | inferior *inf |
7678 | = (event->ptid == null_ptid | |
7679 | ? NULL | |
7680 | : find_inferior_ptid (this, event->ptid)); | |
5cd63fda PA |
7681 | /* If this is the first time we learn anything |
7682 | about this process, skip the registers | |
7683 | included in this packet, since we don't yet | |
7684 | know which architecture to use to parse them. | |
7685 | We'll determine the architecture later when | |
7686 | we process the stop reply and retrieve the | |
7687 | target description, via | |
7688 | remote_notice_new_inferior -> | |
7689 | post_create_inferior. */ | |
7690 | if (inf == NULL) | |
7691 | { | |
7692 | p = strchrnul (p1 + 1, ';'); | |
7693 | p++; | |
7694 | continue; | |
7695 | } | |
7696 | ||
7697 | event->arch = inf->gdbarch; | |
9d6eea31 | 7698 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7699 | } |
7700 | ||
7701 | packet_reg *reg | |
7702 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7703 | cached_reg_t cached_reg; |
43ff13b4 | 7704 | |
1f10ba14 PA |
7705 | if (reg == NULL) |
7706 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7707 | Packet: '%s'\n"), |
1f10ba14 | 7708 | hex_string (pnum), p, buf); |
c8e38a49 | 7709 | |
1f10ba14 | 7710 | cached_reg.num = reg->regnum; |
d1dff226 | 7711 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7712 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7713 | |
1f10ba14 PA |
7714 | p = p1 + 1; |
7715 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7716 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7717 | p += 2 * fieldsize; |
5cd63fda | 7718 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7719 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7720 | |
32603266 | 7721 | event->regcache.push_back (cached_reg); |
1f10ba14 PA |
7722 | } |
7723 | else | |
7724 | { | |
7725 | /* Not a number. Silently skip unknown optional | |
7726 | info. */ | |
8424cc97 | 7727 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7728 | } |
cea39f65 | 7729 | } |
c8e38a49 | 7730 | |
cea39f65 MS |
7731 | if (*p != ';') |
7732 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7733 | buf, p); | |
7734 | ++p; | |
7735 | } | |
5b5596ff PA |
7736 | |
7737 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7738 | break; | |
7739 | ||
c8e38a49 PA |
7740 | /* fall through */ |
7741 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7742 | { |
7743 | int sig; | |
7744 | ||
7745 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7746 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7747 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7748 | event->ws.value.sig = (enum gdb_signal) sig; | |
7749 | else | |
7750 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7751 | } | |
c8e38a49 | 7752 | break; |
65706a29 PA |
7753 | case 'w': /* Thread exited. */ |
7754 | { | |
65706a29 PA |
7755 | ULONGEST value; |
7756 | ||
7757 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7758 | p = unpack_varlen_hex (&buf[1], &value); | |
7759 | event->ws.value.integer = value; | |
7760 | if (*p != ';') | |
7761 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7762 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7763 | break; |
7764 | } | |
c8e38a49 PA |
7765 | case 'W': /* Target exited. */ |
7766 | case 'X': | |
7767 | { | |
c8e38a49 | 7768 | ULONGEST value; |
82f73884 | 7769 | |
c8e38a49 PA |
7770 | /* GDB used to accept only 2 hex chars here. Stubs should |
7771 | only send more if they detect GDB supports multi-process | |
7772 | support. */ | |
7773 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7774 | |
c8e38a49 PA |
7775 | if (buf[0] == 'W') |
7776 | { | |
7777 | /* The remote process exited. */ | |
74531fed PA |
7778 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7779 | event->ws.value.integer = value; | |
c8e38a49 PA |
7780 | } |
7781 | else | |
7782 | { | |
7783 | /* The remote process exited with a signal. */ | |
74531fed | 7784 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7785 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7786 | event->ws.value.sig = (enum gdb_signal) value; | |
7787 | else | |
7788 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7789 | } |
82f73884 | 7790 | |
e7af6c70 TBA |
7791 | /* If no process is specified, return null_ptid, and let the |
7792 | caller figure out the right process to use. */ | |
7793 | int pid = 0; | |
c8e38a49 PA |
7794 | if (*p == '\0') |
7795 | ; | |
7796 | else if (*p == ';') | |
7797 | { | |
7798 | p++; | |
7799 | ||
0b24eb2d | 7800 | if (*p == '\0') |
82f73884 | 7801 | ; |
61012eef | 7802 | else if (startswith (p, "process:")) |
82f73884 | 7803 | { |
c8e38a49 | 7804 | ULONGEST upid; |
a744cf53 | 7805 | |
c8e38a49 PA |
7806 | p += sizeof ("process:") - 1; |
7807 | unpack_varlen_hex (p, &upid); | |
7808 | pid = upid; | |
82f73884 PA |
7809 | } |
7810 | else | |
7811 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7812 | } |
c8e38a49 PA |
7813 | else |
7814 | error (_("unknown stop reply packet: %s"), buf); | |
f2907e49 | 7815 | event->ptid = ptid_t (pid); |
74531fed PA |
7816 | } |
7817 | break; | |
f2faf941 PA |
7818 | case 'N': |
7819 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7820 | event->ptid = minus_one_ptid; | |
7821 | break; | |
74531fed | 7822 | } |
74531fed PA |
7823 | } |
7824 | ||
722247f1 YQ |
7825 | /* When the stub wants to tell GDB about a new notification reply, it |
7826 | sends a notification (%Stop, for example). Those can come it at | |
7827 | any time, hence, we have to make sure that any pending | |
7828 | putpkt/getpkt sequence we're making is finished, before querying | |
7829 | the stub for more events with the corresponding ack command | |
7830 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7831 | immediately upon receiving the notification, something like this | |
7832 | could happen: | |
74531fed PA |
7833 | |
7834 | 1.1) --> Hg 1 | |
7835 | 1.2) <-- OK | |
7836 | 1.3) --> g | |
7837 | 1.4) <-- %Stop | |
7838 | 1.5) --> vStopped | |
7839 | 1.6) <-- (registers reply to step #1.3) | |
7840 | ||
7841 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7842 | query. | |
7843 | ||
796cb314 | 7844 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7845 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7846 | doing whatever we were doing: | |
7847 | ||
7848 | 2.1) --> Hg 1 | |
7849 | 2.2) <-- OK | |
7850 | 2.3) --> g | |
7851 | 2.4) <-- %Stop | |
7852 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7853 | 2.5) <-- (registers reply to step #2.3) | |
7854 | ||
85102364 | 7855 | Eventually after step #2.5, we return to the event loop, which |
74531fed PA |
7856 | notices there's an event on the |
7857 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7858 | associated callback --- the function below. At this point, we're | |
7859 | always safe to start a vStopped sequence. : | |
7860 | ||
7861 | 2.6) --> vStopped | |
7862 | 2.7) <-- T05 thread:2 | |
7863 | 2.8) --> vStopped | |
7864 | 2.9) --> OK | |
7865 | */ | |
7866 | ||
722247f1 | 7867 | void |
6b8edb51 | 7868 | remote_target::remote_notif_get_pending_events (notif_client *nc) |
74531fed PA |
7869 | { |
7870 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7871 | |
f48ff2a7 | 7872 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7873 | { |
722247f1 YQ |
7874 | if (notif_debug) |
7875 | fprintf_unfiltered (gdb_stdlog, | |
7876 | "notif: process: '%s' ack pending event\n", | |
7877 | nc->name); | |
74531fed | 7878 | |
722247f1 | 7879 | /* acknowledge */ |
8d64371b TT |
7880 | nc->ack (this, nc, rs->buf.data (), |
7881 | rs->notif_state->pending_event[nc->id]); | |
f48ff2a7 | 7882 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
7883 | |
7884 | while (1) | |
7885 | { | |
8d64371b TT |
7886 | getpkt (&rs->buf, 0); |
7887 | if (strcmp (rs->buf.data (), "OK") == 0) | |
74531fed PA |
7888 | break; |
7889 | else | |
8d64371b | 7890 | remote_notif_ack (this, nc, rs->buf.data ()); |
74531fed PA |
7891 | } |
7892 | } | |
722247f1 YQ |
7893 | else |
7894 | { | |
7895 | if (notif_debug) | |
7896 | fprintf_unfiltered (gdb_stdlog, | |
7897 | "notif: process: '%s' no pending reply\n", | |
7898 | nc->name); | |
7899 | } | |
74531fed PA |
7900 | } |
7901 | ||
6b8edb51 PA |
7902 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
7903 | avoid having to export the whole remote_target class. */ | |
7904 | ||
7905 | void | |
7906 | remote_notif_get_pending_events (remote_target *remote, notif_client *nc) | |
7907 | { | |
7908 | remote->remote_notif_get_pending_events (nc); | |
7909 | } | |
7910 | ||
8f66807b AB |
7911 | /* Called from process_stop_reply when the stop packet we are responding |
7912 | to didn't include a process-id or thread-id. STATUS is the stop event | |
7913 | we are responding to. | |
7914 | ||
7915 | It is the task of this function to select a suitable thread (or process) | |
7916 | and return its ptid, this is the thread (or process) we will assume the | |
7917 | stop event came from. | |
7918 | ||
7919 | In some cases there isn't really any choice about which thread (or | |
7920 | process) is selected, a basic remote with a single process containing a | |
7921 | single thread might choose not to send any process-id or thread-id in | |
7922 | its stop packets, this function will select and return the one and only | |
7923 | thread. | |
7924 | ||
7925 | However, if a target supports multiple threads (or processes) and still | |
7926 | doesn't include a thread-id (or process-id) in its stop packet then | |
7927 | first, this is a badly behaving target, and second, we're going to have | |
7928 | to select a thread (or process) at random and use that. This function | |
7929 | will print a warning to the user if it detects that there is the | |
7930 | possibility that GDB is guessing which thread (or process) to | |
7931 | report. | |
7932 | ||
7933 | Note that this is called before GDB fetches the updated thread list from the | |
7934 | target. So it's possible for the stop reply to be ambiguous and for GDB to | |
7935 | not realize it. For example, if there's initially one thread, the target | |
7936 | spawns a second thread, and then sends a stop reply without an id that | |
7937 | concerns the first thread. GDB will assume the stop reply is about the | |
7938 | first thread - the only thread it knows about - without printing a warning. | |
7939 | Anyway, if the remote meant for the stop reply to be about the second thread, | |
7940 | then it would be really broken, because GDB doesn't know about that thread | |
7941 | yet. */ | |
74531fed | 7942 | |
6b8edb51 | 7943 | ptid_t |
8f66807b AB |
7944 | remote_target::select_thread_for_ambiguous_stop_reply |
7945 | (const struct target_waitstatus *status) | |
74531fed | 7946 | { |
4351271e AB |
7947 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
7948 | ||
8f66807b AB |
7949 | /* Some stop events apply to all threads in an inferior, while others |
7950 | only apply to a single thread. */ | |
7951 | bool process_wide_stop | |
7952 | = (status->kind == TARGET_WAITKIND_EXITED | |
7953 | || status->kind == TARGET_WAITKIND_SIGNALLED); | |
74531fed | 7954 | |
4351271e AB |
7955 | remote_debug_printf ("process_wide_stop = %d", process_wide_stop); |
7956 | ||
8f66807b AB |
7957 | thread_info *first_resumed_thread = nullptr; |
7958 | bool ambiguous = false; | |
74531fed | 7959 | |
8f66807b AB |
7960 | /* Consider all non-exited threads of the target, find the first resumed |
7961 | one. */ | |
7962 | for (thread_info *thr : all_non_exited_threads (this)) | |
24ed6739 | 7963 | { |
8f66807b | 7964 | remote_thread_info *remote_thr = get_remote_thread_info (thr); |
cada5fc9 | 7965 | |
a6c11cbb | 7966 | if (remote_thr->get_resume_state () != resume_state::RESUMED) |
8f66807b | 7967 | continue; |
24ed6739 | 7968 | |
8f66807b AB |
7969 | if (first_resumed_thread == nullptr) |
7970 | first_resumed_thread = thr; | |
7971 | else if (!process_wide_stop | |
7972 | || first_resumed_thread->ptid.pid () != thr->ptid.pid ()) | |
7973 | ambiguous = true; | |
7974 | } | |
7975 | ||
6eccc2c8 AB |
7976 | gdb_assert (first_resumed_thread != nullptr); |
7977 | ||
4351271e AB |
7978 | remote_debug_printf ("first resumed thread is %s", |
7979 | pid_to_str (first_resumed_thread->ptid).c_str ()); | |
7980 | remote_debug_printf ("is this guess ambiguous? = %d", ambiguous); | |
7981 | ||
8f66807b AB |
7982 | /* Warn if the remote target is sending ambiguous stop replies. */ |
7983 | if (ambiguous) | |
7984 | { | |
7985 | static bool warned = false; | |
7986 | ||
7987 | if (!warned) | |
7988 | { | |
7989 | /* If you are seeing this warning then the remote target has | |
7990 | stopped without specifying a thread-id, but the target | |
7991 | does have multiple threads (or inferiors), and so GDB is | |
7992 | having to guess which thread stopped. | |
7993 | ||
7994 | Examples of what might cause this are the target sending | |
7995 | and 'S' stop packet, or a 'T' stop packet and not | |
7996 | including a thread-id. | |
7997 | ||
7998 | Additionally, the target might send a 'W' or 'X packet | |
7999 | without including a process-id, when the target has | |
8000 | multiple running inferiors. */ | |
8001 | if (process_wide_stop) | |
8002 | warning (_("multi-inferior target stopped without " | |
8003 | "sending a process-id, using first " | |
8004 | "non-exited inferior")); | |
cada5fc9 | 8005 | else |
8f66807b AB |
8006 | warning (_("multi-threaded target stopped without " |
8007 | "sending a thread-id, using first " | |
8008 | "non-exited thread")); | |
8009 | warned = true; | |
24ed6739 | 8010 | } |
24ed6739 | 8011 | } |
74531fed | 8012 | |
8f66807b AB |
8013 | /* If this is a stop for all threads then don't use a particular threads |
8014 | ptid, instead create a new ptid where only the pid field is set. */ | |
8015 | if (process_wide_stop) | |
8016 | return ptid_t (first_resumed_thread->ptid.pid ()); | |
8017 | else | |
8018 | return first_resumed_thread->ptid; | |
8019 | } | |
8020 | ||
8021 | /* Called when it is decided that STOP_REPLY holds the info of the | |
8022 | event that is to be returned to the core. This function always | |
8023 | destroys STOP_REPLY. */ | |
8024 | ||
8025 | ptid_t | |
8026 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
8027 | struct target_waitstatus *status) | |
8028 | { | |
8029 | *status = stop_reply->ws; | |
8030 | ptid_t ptid = stop_reply->ptid; | |
8031 | ||
8032 | /* If no thread/process was reported by the stub then select a suitable | |
8033 | thread/process. */ | |
8034 | if (ptid == null_ptid) | |
8035 | ptid = select_thread_for_ambiguous_stop_reply (status); | |
8036 | gdb_assert (ptid != null_ptid); | |
8037 | ||
5f3563ea | 8038 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
8039 | && status->kind != TARGET_WAITKIND_SIGNALLED |
8040 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 8041 | { |
5f3563ea | 8042 | /* Expedited registers. */ |
32603266 | 8043 | if (!stop_reply->regcache.empty ()) |
5f3563ea | 8044 | { |
217f1f79 | 8045 | struct regcache *regcache |
5b6d1e4f | 8046 | = get_thread_arch_regcache (this, ptid, stop_reply->arch); |
5f3563ea | 8047 | |
32603266 TT |
8048 | for (cached_reg_t ® : stop_reply->regcache) |
8049 | { | |
8050 | regcache->raw_supply (reg.num, reg.data); | |
8051 | xfree (reg.data); | |
8052 | } | |
d1dff226 | 8053 | |
32603266 | 8054 | stop_reply->regcache.clear (); |
5f3563ea | 8055 | } |
74531fed | 8056 | |
8a82de58 | 8057 | remote_notice_new_inferior (ptid, false); |
5b6d1e4f | 8058 | remote_thread_info *remote_thr = get_remote_thread_info (this, ptid); |
799a2abe PA |
8059 | remote_thr->core = stop_reply->core; |
8060 | remote_thr->stop_reason = stop_reply->stop_reason; | |
8061 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
c9d22089 SM |
8062 | |
8063 | if (target_is_non_stop_p ()) | |
8064 | { | |
8065 | /* If the target works in non-stop mode, a stop-reply indicates that | |
8066 | only this thread stopped. */ | |
8067 | remote_thr->set_not_resumed (); | |
8068 | } | |
8069 | else | |
8070 | { | |
8071 | /* If the target works in all-stop mode, a stop-reply indicates that | |
8072 | all the target's threads stopped. */ | |
8073 | for (thread_info *tp : all_non_exited_threads (this)) | |
8074 | get_remote_thread_info (tp)->set_not_resumed (); | |
8075 | } | |
74531fed PA |
8076 | } |
8077 | ||
32603266 | 8078 | delete stop_reply; |
74531fed PA |
8079 | return ptid; |
8080 | } | |
8081 | ||
8082 | /* The non-stop mode version of target_wait. */ | |
8083 | ||
6b8edb51 | 8084 | ptid_t |
b60cea74 TT |
8085 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, |
8086 | target_wait_flags options) | |
74531fed PA |
8087 | { |
8088 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
8089 | struct stop_reply *stop_reply; |
8090 | int ret; | |
fee9eda9 | 8091 | int is_notif = 0; |
74531fed PA |
8092 | |
8093 | /* If in non-stop mode, get out of getpkt even if a | |
8094 | notification is received. */ | |
8095 | ||
8d64371b | 8096 | ret = getpkt_or_notif_sane (&rs->buf, 0 /* forever */, &is_notif); |
74531fed PA |
8097 | while (1) |
8098 | { | |
fee9eda9 | 8099 | if (ret != -1 && !is_notif) |
74531fed PA |
8100 | switch (rs->buf[0]) |
8101 | { | |
8102 | case 'E': /* Error of some sort. */ | |
8103 | /* We're out of sync with the target now. Did it continue | |
8104 | or not? We can't tell which thread it was in non-stop, | |
8105 | so just ignore this. */ | |
8d64371b | 8106 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
74531fed PA |
8107 | break; |
8108 | case 'O': /* Console output. */ | |
8d64371b | 8109 | remote_console_output (&rs->buf[1]); |
74531fed PA |
8110 | break; |
8111 | default: | |
8d64371b | 8112 | warning (_("Invalid remote reply: %s"), rs->buf.data ()); |
74531fed PA |
8113 | break; |
8114 | } | |
8115 | ||
8116 | /* Acknowledge a pending stop reply that may have arrived in the | |
8117 | mean time. */ | |
f48ff2a7 | 8118 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 8119 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
8120 | |
8121 | /* If indeed we noticed a stop reply, we're done. */ | |
8122 | stop_reply = queued_stop_reply (ptid); | |
8123 | if (stop_reply != NULL) | |
8124 | return process_stop_reply (stop_reply, status); | |
8125 | ||
47608cb1 | 8126 | /* Still no event. If we're just polling for an event, then |
74531fed | 8127 | return to the event loop. */ |
47608cb1 | 8128 | if (options & TARGET_WNOHANG) |
74531fed PA |
8129 | { |
8130 | status->kind = TARGET_WAITKIND_IGNORE; | |
8131 | return minus_one_ptid; | |
8132 | } | |
8133 | ||
47608cb1 | 8134 | /* Otherwise do a blocking wait. */ |
8d64371b | 8135 | ret = getpkt_or_notif_sane (&rs->buf, 1 /* forever */, &is_notif); |
74531fed PA |
8136 | } |
8137 | } | |
8138 | ||
31ba933e PA |
8139 | /* Return the first resumed thread. */ |
8140 | ||
8141 | static ptid_t | |
5b6d1e4f | 8142 | first_remote_resumed_thread (remote_target *target) |
31ba933e | 8143 | { |
5b6d1e4f | 8144 | for (thread_info *tp : all_non_exited_threads (target, minus_one_ptid)) |
31ba933e PA |
8145 | if (tp->resumed) |
8146 | return tp->ptid; | |
8147 | return null_ptid; | |
8148 | } | |
8149 | ||
74531fed PA |
8150 | /* Wait until the remote machine stops, then return, storing status in |
8151 | STATUS just as `wait' would. */ | |
8152 | ||
6b8edb51 | 8153 | ptid_t |
b60cea74 TT |
8154 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, |
8155 | target_wait_flags options) | |
74531fed PA |
8156 | { |
8157 | struct remote_state *rs = get_remote_state (); | |
74531fed | 8158 | ptid_t event_ptid = null_ptid; |
cea39f65 | 8159 | char *buf; |
74531fed PA |
8160 | struct stop_reply *stop_reply; |
8161 | ||
47608cb1 PA |
8162 | again: |
8163 | ||
74531fed PA |
8164 | status->kind = TARGET_WAITKIND_IGNORE; |
8165 | status->value.integer = 0; | |
8166 | ||
8167 | stop_reply = queued_stop_reply (ptid); | |
8168 | if (stop_reply != NULL) | |
8169 | return process_stop_reply (stop_reply, status); | |
8170 | ||
8171 | if (rs->cached_wait_status) | |
8172 | /* Use the cached wait status, but only once. */ | |
8173 | rs->cached_wait_status = 0; | |
8174 | else | |
8175 | { | |
8176 | int ret; | |
722247f1 | 8177 | int is_notif; |
567420d1 | 8178 | int forever = ((options & TARGET_WNOHANG) == 0 |
6b8edb51 | 8179 | && rs->wait_forever_enabled_p); |
567420d1 PA |
8180 | |
8181 | if (!rs->waiting_for_stop_reply) | |
8182 | { | |
8183 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
8184 | return minus_one_ptid; | |
8185 | } | |
74531fed | 8186 | |
74531fed PA |
8187 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
8188 | _never_ wait for ever -> test on target_is_async_p(). | |
8189 | However, before we do that we need to ensure that the caller | |
8190 | knows how to take the target into/out of async mode. */ | |
8d64371b | 8191 | ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif); |
722247f1 YQ |
8192 | |
8193 | /* GDB gets a notification. Return to core as this event is | |
8194 | not interesting. */ | |
8195 | if (ret != -1 && is_notif) | |
8196 | return minus_one_ptid; | |
567420d1 PA |
8197 | |
8198 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
8199 | return minus_one_ptid; | |
74531fed PA |
8200 | } |
8201 | ||
8d64371b | 8202 | buf = rs->buf.data (); |
74531fed | 8203 | |
3a29589a DJ |
8204 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
8205 | an 'F' or 'O' packet. */ | |
8206 | if (buf[0] != 'F' && buf[0] != 'O') | |
8207 | rs->ctrlc_pending_p = 0; | |
8208 | ||
74531fed PA |
8209 | switch (buf[0]) |
8210 | { | |
8211 | case 'E': /* Error of some sort. */ | |
8212 | /* We're out of sync with the target now. Did it continue or | |
8213 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
8214 | rs->waiting_for_stop_reply = 0; |
8215 | ||
74531fed PA |
8216 | warning (_("Remote failure reply: %s"), buf); |
8217 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 8218 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
8219 | break; |
8220 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
8221 | /* GDB may access the inferior memory while handling the File-I/O |
8222 | request, but we don't want GDB accessing memory while waiting | |
8223 | for a stop reply. See the comments in putpkt_binary. Set | |
8224 | waiting_for_stop_reply to 0 temporarily. */ | |
8225 | rs->waiting_for_stop_reply = 0; | |
6b8edb51 | 8226 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); |
3a29589a | 8227 | rs->ctrlc_pending_p = 0; |
e42e5352 YQ |
8228 | /* GDB handled the File-I/O request, and the target is running |
8229 | again. Keep waiting for events. */ | |
8230 | rs->waiting_for_stop_reply = 1; | |
74531fed | 8231 | break; |
f2faf941 | 8232 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 8233 | { |
29090fb6 LM |
8234 | /* There is a stop reply to handle. */ |
8235 | rs->waiting_for_stop_reply = 0; | |
8236 | ||
8237 | stop_reply | |
6b8edb51 PA |
8238 | = (struct stop_reply *) remote_notif_parse (this, |
8239 | ¬if_client_stop, | |
8d64371b | 8240 | rs->buf.data ()); |
74531fed | 8241 | |
74531fed | 8242 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
8243 | break; |
8244 | } | |
8245 | case 'O': /* Console output. */ | |
8246 | remote_console_output (buf + 1); | |
c8e38a49 PA |
8247 | break; |
8248 | case '\0': | |
b73be471 | 8249 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
8250 | { |
8251 | /* Zero length reply means that we tried 'S' or 'C' and the | |
8252 | remote system doesn't support it. */ | |
223ffa71 | 8253 | target_terminal::ours_for_output (); |
c8e38a49 PA |
8254 | printf_filtered |
8255 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
8256 | gdb_signal_to_name (rs->last_sent_signal)); |
8257 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 8258 | target_terminal::inferior (); |
c8e38a49 | 8259 | |
f5c4fcd9 TT |
8260 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
8261 | putpkt (buf); | |
c8e38a49 | 8262 | break; |
43ff13b4 | 8263 | } |
86a73007 | 8264 | /* fallthrough */ |
c8e38a49 PA |
8265 | default: |
8266 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 8267 | break; |
43ff13b4 | 8268 | } |
c8e38a49 | 8269 | |
f2faf941 PA |
8270 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
8271 | return minus_one_ptid; | |
8272 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
8273 | { |
8274 | /* Nothing interesting happened. If we're doing a non-blocking | |
8275 | poll, we're done. Otherwise, go back to waiting. */ | |
8276 | if (options & TARGET_WNOHANG) | |
8277 | return minus_one_ptid; | |
8278 | else | |
8279 | goto again; | |
8280 | } | |
74531fed PA |
8281 | else if (status->kind != TARGET_WAITKIND_EXITED |
8282 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 | 8283 | { |
d7e15655 | 8284 | if (event_ptid != null_ptid) |
47f8a51d | 8285 | record_currthread (rs, event_ptid); |
82f73884 | 8286 | else |
5b6d1e4f | 8287 | event_ptid = first_remote_resumed_thread (this); |
43ff13b4 | 8288 | } |
74531fed | 8289 | else |
e7af6c70 TBA |
8290 | { |
8291 | /* A process exit. Invalidate our notion of current thread. */ | |
8292 | record_currthread (rs, minus_one_ptid); | |
8293 | /* It's possible that the packet did not include a pid. */ | |
8294 | if (event_ptid == null_ptid) | |
5b6d1e4f | 8295 | event_ptid = first_remote_resumed_thread (this); |
e7af6c70 TBA |
8296 | /* EVENT_PTID could still be NULL_PTID. Double-check. */ |
8297 | if (event_ptid == null_ptid) | |
8298 | event_ptid = magic_null_ptid; | |
8299 | } | |
79d7f229 | 8300 | |
82f73884 | 8301 | return event_ptid; |
43ff13b4 JM |
8302 | } |
8303 | ||
74531fed PA |
8304 | /* Wait until the remote machine stops, then return, storing status in |
8305 | STATUS just as `wait' would. */ | |
8306 | ||
f6ac5f3d | 8307 | ptid_t |
b60cea74 TT |
8308 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, |
8309 | target_wait_flags options) | |
c8e38a49 | 8310 | { |
2189c312 SM |
8311 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
8312 | ||
baa8575b SM |
8313 | remote_state *rs = get_remote_state (); |
8314 | ||
8315 | /* Start by clearing the flag that asks for our wait method to be called, | |
8316 | we'll mark it again at the end if needed. */ | |
8317 | if (target_is_async_p ()) | |
8318 | clear_async_event_handler (rs->remote_async_inferior_event_token); | |
8319 | ||
c8e38a49 PA |
8320 | ptid_t event_ptid; |
8321 | ||
6efcd9a8 | 8322 | if (target_is_non_stop_p ()) |
6b8edb51 | 8323 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 8324 | else |
6b8edb51 | 8325 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 8326 | |
d9d41e78 | 8327 | if (target_is_async_p ()) |
c8e38a49 | 8328 | { |
baa8575b SM |
8329 | /* If there are events left in the queue, or unacknowledged |
8330 | notifications, then tell the event loop to call us again. */ | |
8331 | if (!rs->stop_reply_queue.empty () | |
8332 | || rs->notif_state->pending_event[notif_client_stop.id] != nullptr) | |
6b8edb51 | 8333 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
c8e38a49 | 8334 | } |
c8e38a49 PA |
8335 | |
8336 | return event_ptid; | |
8337 | } | |
8338 | ||
74ca34ce | 8339 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 8340 | |
6b8edb51 PA |
8341 | int |
8342 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
8343 | packet_reg *reg) | |
b96ec7ac | 8344 | { |
ac7936df | 8345 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 8346 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8347 | char *buf, *p; |
9890e433 | 8348 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
8349 | int i; |
8350 | ||
4082afcc | 8351 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
8352 | return 0; |
8353 | ||
8354 | if (reg->pnum == -1) | |
8355 | return 0; | |
8356 | ||
8d64371b | 8357 | p = rs->buf.data (); |
fcad0fa4 | 8358 | *p++ = 'p'; |
74ca34ce | 8359 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 8360 | *p++ = '\0'; |
1f4437a4 | 8361 | putpkt (rs->buf); |
8d64371b | 8362 | getpkt (&rs->buf, 0); |
3f9a994c | 8363 | |
8d64371b | 8364 | buf = rs->buf.data (); |
2e9f7625 | 8365 | |
8d64371b | 8366 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_p])) |
74ca34ce DJ |
8367 | { |
8368 | case PACKET_OK: | |
8369 | break; | |
8370 | case PACKET_UNKNOWN: | |
8371 | return 0; | |
8372 | case PACKET_ERROR: | |
27a9c0bf | 8373 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 8374 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
8375 | reg->regnum), |
8376 | buf); | |
74ca34ce | 8377 | } |
3f9a994c JB |
8378 | |
8379 | /* If this register is unfetchable, tell the regcache. */ | |
8380 | if (buf[0] == 'x') | |
8480adf2 | 8381 | { |
73e1c03f | 8382 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 8383 | return 1; |
b96ec7ac | 8384 | } |
b96ec7ac | 8385 | |
3f9a994c JB |
8386 | /* Otherwise, parse and supply the value. */ |
8387 | p = buf; | |
8388 | i = 0; | |
8389 | while (p[0] != 0) | |
8390 | { | |
8391 | if (p[1] == 0) | |
74ca34ce | 8392 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
8393 | |
8394 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8395 | p += 2; | |
8396 | } | |
73e1c03f | 8397 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 8398 | return 1; |
b96ec7ac AC |
8399 | } |
8400 | ||
74ca34ce DJ |
8401 | /* Fetch the registers included in the target's 'g' packet. */ |
8402 | ||
6b8edb51 PA |
8403 | int |
8404 | remote_target::send_g_packet () | |
c906108c | 8405 | { |
d01949b6 | 8406 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 8407 | int buf_len; |
c906108c | 8408 | |
8d64371b | 8409 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "g"); |
b75abf5b | 8410 | putpkt (rs->buf); |
8d64371b | 8411 | getpkt (&rs->buf, 0); |
b75abf5b AK |
8412 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
8413 | error (_("Could not read registers; remote failure reply '%s'"), | |
dda83cd7 | 8414 | rs->buf.data ()); |
c906108c | 8415 | |
29709017 DJ |
8416 | /* We can get out of synch in various cases. If the first character |
8417 | in the buffer is not a hex character, assume that has happened | |
8418 | and try to fetch another packet to read. */ | |
8419 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
8420 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
8421 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
8422 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
8423 | { | |
2189c312 | 8424 | remote_debug_printf ("Bad register packet; fetching a new packet"); |
8d64371b | 8425 | getpkt (&rs->buf, 0); |
29709017 DJ |
8426 | } |
8427 | ||
8d64371b | 8428 | buf_len = strlen (rs->buf.data ()); |
74ca34ce DJ |
8429 | |
8430 | /* Sanity check the received packet. */ | |
8431 | if (buf_len % 2 != 0) | |
8d64371b | 8432 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf.data ()); |
29709017 DJ |
8433 | |
8434 | return buf_len / 2; | |
8435 | } | |
8436 | ||
6b8edb51 PA |
8437 | void |
8438 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 8439 | { |
ac7936df | 8440 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 8441 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8442 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
8443 | int i, buf_len; |
8444 | char *p; | |
8445 | char *regs; | |
8446 | ||
8d64371b | 8447 | buf_len = strlen (rs->buf.data ()); |
29709017 DJ |
8448 | |
8449 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 8450 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 | 8451 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8d64371b TT |
8452 | "bytes): %s"), |
8453 | rsa->sizeof_g_packet, buf_len / 2, | |
8454 | rs->buf.data ()); | |
74ca34ce DJ |
8455 | |
8456 | /* Save the size of the packet sent to us by the target. It is used | |
8457 | as a heuristic when determining the max size of packets that the | |
8458 | target can safely receive. */ | |
8459 | if (rsa->actual_register_packet_size == 0) | |
8460 | rsa->actual_register_packet_size = buf_len; | |
8461 | ||
8462 | /* If this is smaller than we guessed the 'g' packet would be, | |
8463 | update our records. A 'g' reply that doesn't include a register's | |
8464 | value implies either that the register is not available, or that | |
8465 | the 'p' packet must be used. */ | |
8466 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8467 | { |
9dc193c3 | 8468 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8469 | |
4a22f64d | 8470 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8471 | { |
9dc193c3 LF |
8472 | long offset = rsa->regs[i].offset; |
8473 | long reg_size = register_size (gdbarch, i); | |
8474 | ||
74ca34ce DJ |
8475 | if (rsa->regs[i].pnum == -1) |
8476 | continue; | |
8477 | ||
9dc193c3 | 8478 | if (offset >= sizeof_g_packet) |
74ca34ce | 8479 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8480 | else if (offset + reg_size > sizeof_g_packet) |
8481 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8482 | else |
74ca34ce | 8483 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8484 | } |
9dc193c3 LF |
8485 | |
8486 | /* Looks valid enough, we can assume this is the correct length | |
dda83cd7 SM |
8487 | for a 'g' packet. It's important not to adjust |
8488 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8489 | this "if" won't be run the next time the method is called | |
8490 | with a packet of the same size and one of the internal errors | |
8491 | below will trigger instead. */ | |
9dc193c3 | 8492 | rsa->sizeof_g_packet = sizeof_g_packet; |
74ca34ce | 8493 | } |
b323314b | 8494 | |
224c3ddb | 8495 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8496 | |
8497 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8498 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8499 | |
c906108c SS |
8500 | /* Reply describes registers byte by byte, each byte encoded as two |
8501 | hex characters. Suck them all up, then supply them to the | |
8502 | register cacheing/storage mechanism. */ | |
8503 | ||
8d64371b | 8504 | p = rs->buf.data (); |
ea9c271d | 8505 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8506 | { |
74ca34ce DJ |
8507 | if (p[0] == 0 || p[1] == 0) |
8508 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
8509 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8510 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 8511 | |
c906108c | 8512 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8513 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8514 | else |
8515 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8516 | p += 2; | |
8517 | } | |
8518 | ||
a744cf53 MS |
8519 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8520 | { | |
8521 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8522 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8523 | |
8524 | if (r->in_g_packet) | |
8525 | { | |
8d64371b | 8526 | if ((r->offset + reg_size) * 2 > strlen (rs->buf.data ())) |
a744cf53 MS |
8527 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
8528 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8529 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8530 | else if (rs->buf[r->offset * 2] == 'x') |
8531 | { | |
8d64371b | 8532 | gdb_assert (r->offset * 2 < strlen (rs->buf.data ())); |
a744cf53 MS |
8533 | /* The register isn't available, mark it as such (at |
8534 | the same time setting the value to zero). */ | |
73e1c03f | 8535 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8536 | } |
8537 | else | |
73e1c03f | 8538 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8539 | } |
8540 | } | |
c906108c SS |
8541 | } |
8542 | ||
6b8edb51 PA |
8543 | void |
8544 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8545 | { |
8546 | send_g_packet (); | |
56be3814 | 8547 | process_g_packet (regcache); |
29709017 DJ |
8548 | } |
8549 | ||
e6e4e701 PA |
8550 | /* Make the remote selected traceframe match GDB's selected |
8551 | traceframe. */ | |
8552 | ||
6b8edb51 PA |
8553 | void |
8554 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8555 | { |
8556 | int newnum; | |
262e1174 | 8557 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8558 | |
262e1174 | 8559 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8560 | return; |
8561 | ||
8562 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8563 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8564 | |
8565 | newnum = target_trace_find (tfind_number, | |
8566 | get_traceframe_number (), 0, 0, NULL); | |
8567 | ||
8568 | /* Should not happen. If it does, all bets are off. */ | |
8569 | if (newnum != get_traceframe_number ()) | |
8570 | warning (_("could not set remote traceframe")); | |
8571 | } | |
8572 | ||
f6ac5f3d PA |
8573 | void |
8574 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8575 | { |
ac7936df | 8576 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8577 | struct remote_state *rs = get_remote_state (); |
8578 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8579 | int i; |
8580 | ||
e6e4e701 | 8581 | set_remote_traceframe (); |
222312d3 | 8582 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8583 | |
8584 | if (regnum >= 0) | |
8585 | { | |
5cd63fda | 8586 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8587 | |
74ca34ce DJ |
8588 | gdb_assert (reg != NULL); |
8589 | ||
8590 | /* If this register might be in the 'g' packet, try that first - | |
8591 | we are likely to read more than one register. If this is the | |
8592 | first 'g' packet, we might be overly optimistic about its | |
8593 | contents, so fall back to 'p'. */ | |
8594 | if (reg->in_g_packet) | |
8595 | { | |
56be3814 | 8596 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8597 | if (reg->in_g_packet) |
8598 | return; | |
8599 | } | |
8600 | ||
56be3814 | 8601 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8602 | return; |
8603 | ||
8604 | /* This register is not available. */ | |
73e1c03f | 8605 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8606 | |
8607 | return; | |
8608 | } | |
8609 | ||
56be3814 | 8610 | fetch_registers_using_g (regcache); |
74ca34ce | 8611 | |
5cd63fda | 8612 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8613 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8614 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8615 | { |
8616 | /* This register is not available. */ | |
73e1c03f | 8617 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8618 | } |
8619 | } | |
8620 | ||
c906108c SS |
8621 | /* Prepare to store registers. Since we may send them all (using a |
8622 | 'G' request), we have to read out the ones we don't want to change | |
8623 | first. */ | |
8624 | ||
f6ac5f3d PA |
8625 | void |
8626 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8627 | { |
9d6eea31 PA |
8628 | struct remote_state *rs = get_remote_state (); |
8629 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8630 | int i; |
cf0e1e0d | 8631 | |
c906108c | 8632 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8633 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8634 | { |
8635 | case PACKET_DISABLE: | |
8636 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8637 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8638 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8639 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8640 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8641 | break; |
8642 | case PACKET_ENABLE: | |
8643 | break; | |
8644 | } | |
8645 | } | |
8646 | ||
ad10f812 | 8647 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8648 | packet was not recognized. */ |
5a2468f5 | 8649 | |
6b8edb51 PA |
8650 | int |
8651 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8652 | packet_reg *reg) | |
5a2468f5 | 8653 | { |
ac7936df | 8654 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8655 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8656 | /* Try storing a single register. */ |
8d64371b | 8657 | char *buf = rs->buf.data (); |
9890e433 | 8658 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8659 | char *p; |
5a2468f5 | 8660 | |
4082afcc | 8661 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8662 | return 0; |
8663 | ||
8664 | if (reg->pnum == -1) | |
8665 | return 0; | |
8666 | ||
ea9c271d | 8667 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8668 | p = buf + strlen (buf); |
34a79281 | 8669 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8670 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 | 8671 | putpkt (rs->buf); |
8d64371b | 8672 | getpkt (&rs->buf, 0); |
5a2468f5 | 8673 | |
74ca34ce DJ |
8674 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8675 | { | |
8676 | case PACKET_OK: | |
8677 | return 1; | |
8678 | case PACKET_ERROR: | |
27a9c0bf | 8679 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8d64371b | 8680 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf.data ()); |
74ca34ce DJ |
8681 | case PACKET_UNKNOWN: |
8682 | return 0; | |
8683 | default: | |
8684 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8685 | } | |
c906108c SS |
8686 | } |
8687 | ||
23860348 MS |
8688 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8689 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8690 | |
6b8edb51 PA |
8691 | void |
8692 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8693 | { |
d01949b6 | 8694 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8695 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8696 | gdb_byte *regs; |
c906108c SS |
8697 | char *p; |
8698 | ||
193cb69f AC |
8699 | /* Extract all the registers in the regcache copying them into a |
8700 | local buffer. */ | |
8701 | { | |
b323314b | 8702 | int i; |
a744cf53 | 8703 | |
224c3ddb | 8704 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8705 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8706 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8707 | { |
ea9c271d | 8708 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8709 | |
b323314b | 8710 | if (r->in_g_packet) |
34a79281 | 8711 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8712 | } |
8713 | } | |
c906108c SS |
8714 | |
8715 | /* Command describes registers byte by byte, | |
8716 | each byte encoded as two hex characters. */ | |
8d64371b | 8717 | p = rs->buf.data (); |
193cb69f | 8718 | *p++ = 'G'; |
74ca34ce | 8719 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 | 8720 | putpkt (rs->buf); |
8d64371b | 8721 | getpkt (&rs->buf, 0); |
1f4437a4 | 8722 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
27a9c0bf | 8723 | error (_("Could not write registers; remote failure reply '%s'"), |
8d64371b | 8724 | rs->buf.data ()); |
c906108c | 8725 | } |
74ca34ce DJ |
8726 | |
8727 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8728 | of the register cache buffer. FIXME: ignores errors. */ | |
8729 | ||
f6ac5f3d PA |
8730 | void |
8731 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8732 | { |
5cd63fda | 8733 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8734 | struct remote_state *rs = get_remote_state (); |
8735 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8736 | int i; |
8737 | ||
e6e4e701 | 8738 | set_remote_traceframe (); |
222312d3 | 8739 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8740 | |
8741 | if (regnum >= 0) | |
8742 | { | |
5cd63fda | 8743 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8744 | |
74ca34ce DJ |
8745 | gdb_assert (reg != NULL); |
8746 | ||
8747 | /* Always prefer to store registers using the 'P' packet if | |
8748 | possible; we often change only a small number of registers. | |
8749 | Sometimes we change a larger number; we'd need help from a | |
8750 | higher layer to know to use 'G'. */ | |
56be3814 | 8751 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8752 | return; |
8753 | ||
8754 | /* For now, don't complain if we have no way to write the | |
8755 | register. GDB loses track of unavailable registers too | |
8756 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8757 | any way to read the register, either... */ |
74ca34ce DJ |
8758 | if (!reg->in_g_packet) |
8759 | return; | |
8760 | ||
56be3814 | 8761 | store_registers_using_G (regcache); |
74ca34ce DJ |
8762 | return; |
8763 | } | |
8764 | ||
56be3814 | 8765 | store_registers_using_G (regcache); |
74ca34ce | 8766 | |
5cd63fda | 8767 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8768 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8769 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8770 | /* See above for why we do not issue an error here. */ |
8771 | continue; | |
8772 | } | |
c906108c SS |
8773 | \f |
8774 | ||
8775 | /* Return the number of hex digits in num. */ | |
8776 | ||
8777 | static int | |
fba45db2 | 8778 | hexnumlen (ULONGEST num) |
c906108c SS |
8779 | { |
8780 | int i; | |
8781 | ||
8782 | for (i = 0; num != 0; i++) | |
8783 | num >>= 4; | |
8784 | ||
325fac50 | 8785 | return std::max (i, 1); |
c906108c SS |
8786 | } |
8787 | ||
2df3850c | 8788 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8789 | |
8790 | static int | |
fba45db2 | 8791 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8792 | { |
c906108c | 8793 | int len = hexnumlen (num); |
a744cf53 | 8794 | |
2df3850c JM |
8795 | return hexnumnstr (buf, num, len); |
8796 | } | |
8797 | ||
c906108c | 8798 | |
2df3850c | 8799 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8800 | |
2df3850c | 8801 | static int |
fba45db2 | 8802 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8803 | { |
8804 | int i; | |
8805 | ||
8806 | buf[width] = '\0'; | |
8807 | ||
8808 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8809 | { |
c5aa993b | 8810 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8811 | num >>= 4; |
8812 | } | |
8813 | ||
2df3850c | 8814 | return width; |
c906108c SS |
8815 | } |
8816 | ||
23860348 | 8817 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8818 | |
8819 | static CORE_ADDR | |
fba45db2 | 8820 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8821 | { |
883b9c6c | 8822 | unsigned int address_size = remote_address_size; |
a744cf53 | 8823 | |
911c95a5 UW |
8824 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8825 | if (!address_size) | |
f5656ead | 8826 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8827 | |
8828 | if (address_size > 0 | |
8829 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8830 | { |
8831 | /* Only create a mask when that mask can safely be constructed | |
dda83cd7 | 8832 | in a ULONGEST variable. */ |
c906108c | 8833 | ULONGEST mask = 1; |
a744cf53 | 8834 | |
911c95a5 | 8835 | mask = (mask << address_size) - 1; |
c906108c SS |
8836 | addr &= mask; |
8837 | } | |
8838 | return addr; | |
8839 | } | |
8840 | ||
8841 | /* Determine whether the remote target supports binary downloading. | |
8842 | This is accomplished by sending a no-op memory write of zero length | |
8843 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8844 | the whole packet, since many stubs strip the eighth bit and |
8845 | subsequently compute a wrong checksum, which causes real havoc with | |
8846 | remote_write_bytes. | |
7a292a7a | 8847 | |
96baa820 | 8848 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8849 | clean. In cases like this, the user should clear "remote |
23860348 | 8850 | X-packet". */ |
96baa820 | 8851 | |
6b8edb51 PA |
8852 | void |
8853 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 8854 | { |
d01949b6 | 8855 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8856 | |
4082afcc | 8857 | switch (packet_support (PACKET_X)) |
c906108c | 8858 | { |
96baa820 JM |
8859 | case PACKET_DISABLE: |
8860 | break; | |
8861 | case PACKET_ENABLE: | |
8862 | break; | |
8863 | case PACKET_SUPPORT_UNKNOWN: | |
8864 | { | |
96baa820 | 8865 | char *p; |
802188a7 | 8866 | |
8d64371b | 8867 | p = rs->buf.data (); |
96baa820 JM |
8868 | *p++ = 'X'; |
8869 | p += hexnumstr (p, (ULONGEST) addr); | |
8870 | *p++ = ','; | |
8871 | p += hexnumstr (p, (ULONGEST) 0); | |
8872 | *p++ = ':'; | |
8873 | *p = '\0'; | |
802188a7 | 8874 | |
8d64371b TT |
8875 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8876 | getpkt (&rs->buf, 0); | |
c906108c | 8877 | |
2e9f7625 | 8878 | if (rs->buf[0] == '\0') |
96baa820 | 8879 | { |
2189c312 | 8880 | remote_debug_printf ("binary downloading NOT supported by target"); |
444abaca | 8881 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8882 | } |
8883 | else | |
8884 | { | |
2189c312 | 8885 | remote_debug_printf ("binary downloading supported by target"); |
444abaca | 8886 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8887 | } |
8888 | break; | |
8889 | } | |
c906108c SS |
8890 | } |
8891 | } | |
8892 | ||
124e13d9 SM |
8893 | /* Helper function to resize the payload in order to try to get a good |
8894 | alignment. We try to write an amount of data such that the next write will | |
8895 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8896 | ||
8897 | static int | |
8898 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8899 | { | |
8900 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8901 | } | |
8902 | ||
c906108c SS |
8903 | /* Write memory data directly to the remote machine. |
8904 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8905 | HEADER is the starting part of the packet. |
c906108c SS |
8906 | MEMADDR is the address in the remote memory space. |
8907 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8908 | LEN_UNITS is the number of addressable units to write. |
8909 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8910 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8911 | should send data as binary ('X'), or hex-encoded ('M'). | |
8912 | ||
8913 | The function creates packet of the form | |
8914 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8915 | ||
124e13d9 | 8916 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8917 | |
8918 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8919 | are omitted. | |
8920 | ||
9b409511 | 8921 | Return the transferred status, error or OK (an |
124e13d9 SM |
8922 | 'enum target_xfer_status' value). Save the number of addressable units |
8923 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8924 | ||
8925 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8926 | exchange between gdb and the stub could look like (?? in place of the | |
8927 | checksum): | |
8928 | ||
8929 | -> $m1000,4#?? | |
8930 | <- aaaabbbbccccdddd | |
8931 | ||
8932 | -> $M1000,3:eeeeffffeeee#?? | |
8933 | <- OK | |
8934 | ||
8935 | -> $m1000,4#?? | |
8936 | <- eeeeffffeeeedddd */ | |
c906108c | 8937 | |
6b8edb51 PA |
8938 | target_xfer_status |
8939 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
8940 | const gdb_byte *myaddr, | |
8941 | ULONGEST len_units, | |
8942 | int unit_size, | |
8943 | ULONGEST *xfered_len_units, | |
8944 | char packet_format, int use_length) | |
c906108c | 8945 | { |
6d820c5c | 8946 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8947 | char *p; |
a76d924d DJ |
8948 | char *plen = NULL; |
8949 | int plenlen = 0; | |
124e13d9 SM |
8950 | int todo_units; |
8951 | int units_written; | |
8952 | int payload_capacity_bytes; | |
8953 | int payload_length_bytes; | |
a76d924d DJ |
8954 | |
8955 | if (packet_format != 'X' && packet_format != 'M') | |
8956 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8957 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8958 | |
124e13d9 | 8959 | if (len_units == 0) |
9b409511 | 8960 | return TARGET_XFER_EOF; |
b2182ed2 | 8961 | |
124e13d9 | 8962 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8963 | |
6d820c5c DJ |
8964 | /* The packet buffer will be large enough for the payload; |
8965 | get_memory_packet_size ensures this. */ | |
a76d924d | 8966 | rs->buf[0] = '\0'; |
c906108c | 8967 | |
a257b5bb | 8968 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8969 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8970 | ||
124e13d9 | 8971 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8972 | if (!use_length) |
0df8b418 | 8973 | /* The comma won't be used. */ |
124e13d9 SM |
8974 | payload_capacity_bytes += 1; |
8975 | payload_capacity_bytes -= strlen (header); | |
8976 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8977 | |
a76d924d | 8978 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8979 | |
8d64371b TT |
8980 | strcat (rs->buf.data (), header); |
8981 | p = rs->buf.data () + strlen (header); | |
a76d924d DJ |
8982 | |
8983 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8984 | if (packet_format == 'X') | |
c906108c | 8985 | { |
23860348 | 8986 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8987 | todo_units = std::min (len_units, |
8988 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8989 | if (use_length) |
124e13d9 | 8990 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8991 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8992 | } |
8993 | else | |
8994 | { | |
124e13d9 | 8995 | /* Number of bytes that will fit. */ |
325fac50 PA |
8996 | todo_units |
8997 | = std::min (len_units, | |
8998 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8999 | if (use_length) |
124e13d9 | 9000 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
9001 | todo_units = std::min (todo_units, |
9002 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 9003 | } |
a76d924d | 9004 | |
124e13d9 | 9005 | if (todo_units <= 0) |
3de11b2e | 9006 | internal_error (__FILE__, __LINE__, |
405f8e94 | 9007 | _("minimum packet size too small to write data")); |
802188a7 | 9008 | |
6765f3e5 DJ |
9009 | /* If we already need another packet, then try to align the end |
9010 | of this packet to a useful boundary. */ | |
124e13d9 SM |
9011 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
9012 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 9013 | |
a257b5bb | 9014 | /* Append "<memaddr>". */ |
917317f4 JM |
9015 | memaddr = remote_address_masked (memaddr); |
9016 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 9017 | |
a76d924d DJ |
9018 | if (use_length) |
9019 | { | |
9020 | /* Append ",". */ | |
9021 | *p++ = ','; | |
802188a7 | 9022 | |
124e13d9 | 9023 | /* Append the length and retain its location and size. It may need to be |
dda83cd7 | 9024 | adjusted once the packet body has been created. */ |
a76d924d | 9025 | plen = p; |
124e13d9 | 9026 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
9027 | p += plenlen; |
9028 | } | |
a257b5bb AC |
9029 | |
9030 | /* Append ":". */ | |
917317f4 JM |
9031 | *p++ = ':'; |
9032 | *p = '\0'; | |
802188a7 | 9033 | |
a257b5bb | 9034 | /* Append the packet body. */ |
a76d924d | 9035 | if (packet_format == 'X') |
917317f4 | 9036 | { |
917317f4 JM |
9037 | /* Binary mode. Send target system values byte by byte, in |
9038 | increasing byte addresses. Only escape certain critical | |
9039 | characters. */ | |
124e13d9 SM |
9040 | payload_length_bytes = |
9041 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
9042 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 9043 | |
124e13d9 | 9044 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
9045 | a second try to keep the end of the packet aligned. Don't do |
9046 | this if the packet is tiny. */ | |
124e13d9 | 9047 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 9048 | { |
124e13d9 SM |
9049 | int new_todo_units; |
9050 | ||
9051 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
9052 | ||
9053 | if (new_todo_units != units_written) | |
9054 | payload_length_bytes = | |
9055 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
9056 | (gdb_byte *) p, &units_written, | |
9057 | payload_capacity_bytes); | |
6765f3e5 DJ |
9058 | } |
9059 | ||
124e13d9 SM |
9060 | p += payload_length_bytes; |
9061 | if (use_length && units_written < todo_units) | |
c906108c | 9062 | { |
802188a7 | 9063 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 9064 | and we have actually sent fewer units than planned. |
917317f4 JM |
9065 | Fix-up the length field of the packet. Use the same |
9066 | number of characters as before. */ | |
124e13d9 SM |
9067 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
9068 | plenlen); | |
917317f4 | 9069 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 9070 | } |
a76d924d DJ |
9071 | } |
9072 | else | |
9073 | { | |
917317f4 JM |
9074 | /* Normal mode: Send target system values byte by byte, in |
9075 | increasing byte addresses. Each byte is encoded as a two hex | |
9076 | value. */ | |
124e13d9 SM |
9077 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
9078 | units_written = todo_units; | |
c906108c | 9079 | } |
802188a7 | 9080 | |
8d64371b TT |
9081 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
9082 | getpkt (&rs->buf, 0); | |
802188a7 | 9083 | |
2e9f7625 | 9084 | if (rs->buf[0] == 'E') |
00d84524 | 9085 | return TARGET_XFER_E_IO; |
802188a7 | 9086 | |
124e13d9 SM |
9087 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
9088 | send fewer units than we'd planned. */ | |
9089 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 9090 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
9091 | } |
9092 | ||
a76d924d DJ |
9093 | /* Write memory data directly to the remote machine. |
9094 | This does not inform the data cache; the data cache uses this. | |
9095 | MEMADDR is the address in the remote memory space. | |
9096 | MYADDR is the address of the buffer in our space. | |
9097 | LEN is the number of bytes. | |
9098 | ||
9b409511 YQ |
9099 | Return the transferred status, error or OK (an |
9100 | 'enum target_xfer_status' value). Save the number of bytes | |
9101 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 9102 | |
6b8edb51 PA |
9103 | target_xfer_status |
9104 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
9105 | ULONGEST len, int unit_size, | |
9106 | ULONGEST *xfered_len) | |
a76d924d | 9107 | { |
a121b7c1 | 9108 | const char *packet_format = NULL; |
a76d924d DJ |
9109 | |
9110 | /* Check whether the target supports binary download. */ | |
9111 | check_binary_download (memaddr); | |
9112 | ||
4082afcc | 9113 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
9114 | { |
9115 | case PACKET_ENABLE: | |
9116 | packet_format = "X"; | |
9117 | break; | |
9118 | case PACKET_DISABLE: | |
9119 | packet_format = "M"; | |
9120 | break; | |
9121 | case PACKET_SUPPORT_UNKNOWN: | |
9122 | internal_error (__FILE__, __LINE__, | |
9123 | _("remote_write_bytes: bad internal state")); | |
9124 | default: | |
9125 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
9126 | } | |
9127 | ||
9128 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 9129 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 9130 | packet_format[0], 1); |
a76d924d DJ |
9131 | } |
9132 | ||
9217e74e YQ |
9133 | /* Read memory data directly from the remote machine. |
9134 | This does not use the data cache; the data cache uses this. | |
9135 | MEMADDR is the address in the remote memory space. | |
9136 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
9137 | LEN_UNITS is the number of addressable memory units to read.. |
9138 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
9139 | |
9140 | Return the transferred status, error or OK (an | |
9141 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
9142 | transferred in *XFERED_LEN_UNITS. |
9143 | ||
9144 | See the comment of remote_write_bytes_aux for an example of | |
9145 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 9146 | |
6b8edb51 PA |
9147 | target_xfer_status |
9148 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
9149 | ULONGEST len_units, | |
9150 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
9151 | { |
9152 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 9153 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 9154 | char *p; |
124e13d9 SM |
9155 | int todo_units; |
9156 | int decoded_bytes; | |
9217e74e | 9157 | |
124e13d9 | 9158 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
9159 | /* The packet buffer will be large enough for the payload; |
9160 | get_memory_packet_size ensures this. */ | |
9161 | ||
124e13d9 | 9162 | /* Number of units that will fit. */ |
325fac50 PA |
9163 | todo_units = std::min (len_units, |
9164 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
9165 | |
9166 | /* Construct "m"<memaddr>","<len>". */ | |
9167 | memaddr = remote_address_masked (memaddr); | |
8d64371b | 9168 | p = rs->buf.data (); |
9217e74e YQ |
9169 | *p++ = 'm'; |
9170 | p += hexnumstr (p, (ULONGEST) memaddr); | |
9171 | *p++ = ','; | |
124e13d9 | 9172 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
9173 | *p = '\0'; |
9174 | putpkt (rs->buf); | |
8d64371b | 9175 | getpkt (&rs->buf, 0); |
9217e74e YQ |
9176 | if (rs->buf[0] == 'E' |
9177 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
9178 | && rs->buf[3] == '\0') | |
9179 | return TARGET_XFER_E_IO; | |
9180 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
9181 | characters. */ | |
8d64371b | 9182 | p = rs->buf.data (); |
124e13d9 | 9183 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 9184 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 9185 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 9186 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
9187 | } |
9188 | ||
b55fbac4 YQ |
9189 | /* Using the set of read-only target sections of remote, read live |
9190 | read-only memory. | |
8acf9577 YQ |
9191 | |
9192 | For interface/parameters/return description see target.h, | |
9193 | to_xfer_partial. */ | |
9194 | ||
6b8edb51 PA |
9195 | target_xfer_status |
9196 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
9197 | ULONGEST memaddr, | |
9198 | ULONGEST len, | |
9199 | int unit_size, | |
9200 | ULONGEST *xfered_len) | |
8acf9577 | 9201 | { |
19cf757a | 9202 | const struct target_section *secp; |
8acf9577 | 9203 | |
6b8edb51 | 9204 | secp = target_section_by_addr (this, memaddr); |
8acf9577 | 9205 | if (secp != NULL |
fd361982 | 9206 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
8acf9577 | 9207 | { |
8acf9577 YQ |
9208 | ULONGEST memend = memaddr + len; |
9209 | ||
19cf757a AB |
9210 | const target_section_table *table = target_get_section_table (this); |
9211 | for (const target_section &p : *table) | |
8acf9577 | 9212 | { |
bb2a6777 | 9213 | if (memaddr >= p.addr) |
8acf9577 | 9214 | { |
bb2a6777 | 9215 | if (memend <= p.endaddr) |
8acf9577 YQ |
9216 | { |
9217 | /* Entire transfer is within this section. */ | |
124e13d9 | 9218 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9219 | xfered_len); |
8acf9577 | 9220 | } |
bb2a6777 | 9221 | else if (memaddr >= p.endaddr) |
8acf9577 YQ |
9222 | { |
9223 | /* This section ends before the transfer starts. */ | |
9224 | continue; | |
9225 | } | |
9226 | else | |
9227 | { | |
9228 | /* This section overlaps the transfer. Just do half. */ | |
bb2a6777 | 9229 | len = p.endaddr - memaddr; |
124e13d9 | 9230 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9231 | xfered_len); |
8acf9577 YQ |
9232 | } |
9233 | } | |
9234 | } | |
9235 | } | |
9236 | ||
9237 | return TARGET_XFER_EOF; | |
9238 | } | |
9239 | ||
9217e74e YQ |
9240 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
9241 | first if the requested memory is unavailable in traceframe. | |
9242 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 9243 | |
6b8edb51 PA |
9244 | target_xfer_status |
9245 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
9246 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
9247 | ULONGEST *xfered_len) | |
c906108c | 9248 | { |
6b6aa828 | 9249 | if (len == 0) |
96c4f946 | 9250 | return TARGET_XFER_EOF; |
b2182ed2 | 9251 | |
8acf9577 YQ |
9252 | if (get_traceframe_number () != -1) |
9253 | { | |
a79b1bc6 | 9254 | std::vector<mem_range> available; |
8acf9577 YQ |
9255 | |
9256 | /* If we fail to get the set of available memory, then the | |
9257 | target does not support querying traceframe info, and so we | |
9258 | attempt reading from the traceframe anyway (assuming the | |
9259 | target implements the old QTro packet then). */ | |
9260 | if (traceframe_available_memory (&available, memaddr, len)) | |
9261 | { | |
a79b1bc6 | 9262 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
9263 | { |
9264 | enum target_xfer_status res; | |
9265 | ||
9266 | /* Don't read into the traceframe's available | |
9267 | memory. */ | |
a79b1bc6 | 9268 | if (!available.empty ()) |
8acf9577 YQ |
9269 | { |
9270 | LONGEST oldlen = len; | |
9271 | ||
a79b1bc6 | 9272 | len = available[0].start - memaddr; |
8acf9577 YQ |
9273 | gdb_assert (len <= oldlen); |
9274 | } | |
9275 | ||
8acf9577 | 9276 | /* This goes through the topmost target again. */ |
6b8edb51 | 9277 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 9278 | len, unit_size, xfered_len); |
8acf9577 YQ |
9279 | if (res == TARGET_XFER_OK) |
9280 | return TARGET_XFER_OK; | |
9281 | else | |
9282 | { | |
9283 | /* No use trying further, we know some memory starting | |
9284 | at MEMADDR isn't available. */ | |
9285 | *xfered_len = len; | |
92ffd475 PC |
9286 | return (*xfered_len != 0) ? |
9287 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
9288 | } |
9289 | } | |
9290 | ||
9291 | /* Don't try to read more than how much is available, in | |
9292 | case the target implements the deprecated QTro packet to | |
9293 | cater for older GDBs (the target's knowledge of read-only | |
9294 | sections may be outdated by now). */ | |
a79b1bc6 | 9295 | len = available[0].length; |
8acf9577 YQ |
9296 | } |
9297 | } | |
9298 | ||
124e13d9 | 9299 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 9300 | } |
74531fed | 9301 | |
c906108c | 9302 | \f |
c906108c | 9303 | |
a76d924d DJ |
9304 | /* Sends a packet with content determined by the printf format string |
9305 | FORMAT and the remaining arguments, then gets the reply. Returns | |
9306 | whether the packet was a success, a failure, or unknown. */ | |
9307 | ||
6b8edb51 PA |
9308 | packet_result |
9309 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
9310 | { |
9311 | struct remote_state *rs = get_remote_state (); | |
9312 | int max_size = get_remote_packet_size (); | |
a76d924d | 9313 | va_list ap; |
a744cf53 | 9314 | |
a76d924d DJ |
9315 | va_start (ap, format); |
9316 | ||
9317 | rs->buf[0] = '\0'; | |
8d64371b | 9318 | int size = vsnprintf (rs->buf.data (), max_size, format, ap); |
33b031ce GB |
9319 | |
9320 | va_end (ap); | |
9321 | ||
9322 | if (size >= max_size) | |
9b20d036 | 9323 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
9324 | |
9325 | if (putpkt (rs->buf) < 0) | |
9326 | error (_("Communication problem with target.")); | |
9327 | ||
9328 | rs->buf[0] = '\0'; | |
8d64371b | 9329 | getpkt (&rs->buf, 0); |
a76d924d DJ |
9330 | |
9331 | return packet_check_result (rs->buf); | |
9332 | } | |
9333 | ||
a76d924d DJ |
9334 | /* Flash writing can take quite some time. We'll set |
9335 | effectively infinite timeout for flash operations. | |
9336 | In future, we'll need to decide on a better approach. */ | |
9337 | static const int remote_flash_timeout = 1000; | |
9338 | ||
f6ac5f3d PA |
9339 | void |
9340 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 9341 | { |
f5656ead | 9342 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 9343 | enum packet_result ret; |
2ec845e7 TT |
9344 | scoped_restore restore_timeout |
9345 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
9346 | |
9347 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 9348 | phex (address, addr_size), |
a76d924d DJ |
9349 | phex (length, 4)); |
9350 | switch (ret) | |
9351 | { | |
9352 | case PACKET_UNKNOWN: | |
9353 | error (_("Remote target does not support flash erase")); | |
9354 | case PACKET_ERROR: | |
9355 | error (_("Error erasing flash with vFlashErase packet")); | |
9356 | default: | |
9357 | break; | |
9358 | } | |
a76d924d DJ |
9359 | } |
9360 | ||
6b8edb51 PA |
9361 | target_xfer_status |
9362 | remote_target::remote_flash_write (ULONGEST address, | |
9363 | ULONGEST length, ULONGEST *xfered_len, | |
9364 | const gdb_byte *data) | |
a76d924d | 9365 | { |
2ec845e7 TT |
9366 | scoped_restore restore_timeout |
9367 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9368 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
9369 | xfered_len,'X', 0); | |
a76d924d DJ |
9370 | } |
9371 | ||
f6ac5f3d PA |
9372 | void |
9373 | remote_target::flash_done () | |
a76d924d | 9374 | { |
a76d924d | 9375 | int ret; |
a76d924d | 9376 | |
2ec845e7 TT |
9377 | scoped_restore restore_timeout |
9378 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9379 | ||
a76d924d | 9380 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
9381 | |
9382 | switch (ret) | |
9383 | { | |
9384 | case PACKET_UNKNOWN: | |
9385 | error (_("Remote target does not support vFlashDone")); | |
9386 | case PACKET_ERROR: | |
9387 | error (_("Error finishing flash operation")); | |
9388 | default: | |
9389 | break; | |
9390 | } | |
9391 | } | |
9392 | ||
f6ac5f3d PA |
9393 | void |
9394 | remote_target::files_info () | |
c906108c SS |
9395 | { |
9396 | puts_filtered ("Debugging a target over a serial line.\n"); | |
9397 | } | |
9398 | \f | |
9399 | /* Stuff for dealing with the packets which are part of this protocol. | |
9400 | See comment at top of file for details. */ | |
9401 | ||
1927e618 PA |
9402 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
9403 | error to higher layers. Called when a serial error is detected. | |
9404 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
9405 | the system error message for errno at function entry and final dot |
9406 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
9407 | |
9408 | static void | |
5b6d1e4f | 9409 | unpush_and_perror (remote_target *target, const char *string) |
1927e618 | 9410 | { |
d6cb50a2 | 9411 | int saved_errno = errno; |
1927e618 | 9412 | |
5b6d1e4f | 9413 | remote_unpush_target (target); |
d6cb50a2 JK |
9414 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
9415 | safe_strerror (saved_errno)); | |
1927e618 PA |
9416 | } |
9417 | ||
048094ac PA |
9418 | /* Read a single character from the remote end. The current quit |
9419 | handler is overridden to avoid quitting in the middle of packet | |
9420 | sequence, as that would break communication with the remote server. | |
9421 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 9422 | |
6b8edb51 PA |
9423 | int |
9424 | remote_target::readchar (int timeout) | |
c906108c SS |
9425 | { |
9426 | int ch; | |
5d93a237 | 9427 | struct remote_state *rs = get_remote_state (); |
048094ac | 9428 | |
2ec845e7 | 9429 | { |
6b8edb51 PA |
9430 | scoped_restore restore_quit_target |
9431 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9432 | scoped_restore restore_quit |
6b8edb51 | 9433 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 9434 | |
2ec845e7 | 9435 | rs->got_ctrlc_during_io = 0; |
c906108c | 9436 | |
2ec845e7 | 9437 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 9438 | |
2ec845e7 TT |
9439 | if (rs->got_ctrlc_during_io) |
9440 | set_quit_flag (); | |
9441 | } | |
048094ac | 9442 | |
2acceee2 | 9443 | if (ch >= 0) |
0876f84a | 9444 | return ch; |
2acceee2 JM |
9445 | |
9446 | switch ((enum serial_rc) ch) | |
c906108c SS |
9447 | { |
9448 | case SERIAL_EOF: | |
5b6d1e4f | 9449 | remote_unpush_target (this); |
598d3636 | 9450 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 9451 | /* no return */ |
c906108c | 9452 | case SERIAL_ERROR: |
5b6d1e4f PA |
9453 | unpush_and_perror (this, _("Remote communication error. " |
9454 | "Target disconnected.")); | |
2acceee2 | 9455 | /* no return */ |
c906108c | 9456 | case SERIAL_TIMEOUT: |
2acceee2 | 9457 | break; |
c906108c | 9458 | } |
2acceee2 | 9459 | return ch; |
c906108c SS |
9460 | } |
9461 | ||
c33e31fd | 9462 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9463 | writing fails. The current quit handler is overridden to avoid |
9464 | quitting in the middle of packet sequence, as that would break | |
9465 | communication with the remote server. See | |
9466 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9467 | |
6b8edb51 PA |
9468 | void |
9469 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9470 | { |
5d93a237 | 9471 | struct remote_state *rs = get_remote_state (); |
048094ac | 9472 | |
6b8edb51 PA |
9473 | scoped_restore restore_quit_target |
9474 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9475 | scoped_restore restore_quit |
6b8edb51 | 9476 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9477 | |
9478 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9479 | |
9480 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9481 | { |
5b6d1e4f PA |
9482 | unpush_and_perror (this, _("Remote communication error. " |
9483 | "Target disconnected.")); | |
c33e31fd | 9484 | } |
048094ac PA |
9485 | |
9486 | if (rs->got_ctrlc_during_io) | |
9487 | set_quit_flag (); | |
c33e31fd PA |
9488 | } |
9489 | ||
b3ced9ba PA |
9490 | /* Return a string representing an escaped version of BUF, of len N. |
9491 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9492 | |
b3ced9ba | 9493 | static std::string |
6e5abd65 PA |
9494 | escape_buffer (const char *buf, int n) |
9495 | { | |
d7e74731 | 9496 | string_file stb; |
6e5abd65 | 9497 | |
d7e74731 PA |
9498 | stb.putstrn (buf, n, '\\'); |
9499 | return std::move (stb.string ()); | |
6e5abd65 PA |
9500 | } |
9501 | ||
c906108c SS |
9502 | /* Display a null-terminated packet on stdout, for debugging, using C |
9503 | string notation. */ | |
9504 | ||
9505 | static void | |
baa336ce | 9506 | print_packet (const char *buf) |
c906108c SS |
9507 | { |
9508 | puts_filtered ("\""); | |
43e526b9 | 9509 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
9510 | puts_filtered ("\""); |
9511 | } | |
9512 | ||
9513 | int | |
6b8edb51 | 9514 | remote_target::putpkt (const char *buf) |
c906108c SS |
9515 | { |
9516 | return putpkt_binary (buf, strlen (buf)); | |
9517 | } | |
9518 | ||
6b8edb51 PA |
9519 | /* Wrapper around remote_target::putpkt to avoid exporting |
9520 | remote_target. */ | |
9521 | ||
9522 | int | |
9523 | putpkt (remote_target *remote, const char *buf) | |
9524 | { | |
9525 | return remote->putpkt (buf); | |
9526 | } | |
9527 | ||
c906108c | 9528 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9529 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9530 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9531 | and for a possible /0 if we are debugging (remote_debug) and want |
9532 | to print the sent packet as a string. */ | |
c906108c | 9533 | |
6b8edb51 PA |
9534 | int |
9535 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9536 | { |
2d717e4f | 9537 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9538 | int i; |
9539 | unsigned char csum = 0; | |
b80406ac TT |
9540 | gdb::def_vector<char> data (cnt + 6); |
9541 | char *buf2 = data.data (); | |
085dd6e6 | 9542 | |
c906108c SS |
9543 | int ch; |
9544 | int tcount = 0; | |
9545 | char *p; | |
9546 | ||
e24a49d8 PA |
9547 | /* Catch cases like trying to read memory or listing threads while |
9548 | we're waiting for a stop reply. The remote server wouldn't be | |
9549 | ready to handle this request, so we'd hang and timeout. We don't | |
9550 | have to worry about this in synchronous mode, because in that | |
9551 | case it's not possible to issue a command while the target is | |
74531fed PA |
9552 | running. This is not a problem in non-stop mode, because in that |
9553 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9554 | if (!target_is_non_stop_p () |
9555 | && target_is_async_p () | |
9556 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9557 | { |
9558 | error (_("Cannot execute this command while the target is running.\n" | |
9559 | "Use the \"interrupt\" command to stop the target\n" | |
9560 | "and then try again.")); | |
9561 | } | |
e24a49d8 | 9562 | |
2d717e4f DJ |
9563 | /* We're sending out a new packet. Make sure we don't look at a |
9564 | stale cached response. */ | |
9565 | rs->cached_wait_status = 0; | |
9566 | ||
c906108c SS |
9567 | /* Copy the packet into buffer BUF2, encapsulating it |
9568 | and giving it a checksum. */ | |
9569 | ||
c906108c SS |
9570 | p = buf2; |
9571 | *p++ = '$'; | |
9572 | ||
9573 | for (i = 0; i < cnt; i++) | |
9574 | { | |
9575 | csum += buf[i]; | |
9576 | *p++ = buf[i]; | |
9577 | } | |
9578 | *p++ = '#'; | |
9579 | *p++ = tohex ((csum >> 4) & 0xf); | |
9580 | *p++ = tohex (csum & 0xf); | |
9581 | ||
9582 | /* Send it over and over until we get a positive ack. */ | |
9583 | ||
9584 | while (1) | |
9585 | { | |
c906108c SS |
9586 | if (remote_debug) |
9587 | { | |
9588 | *p = '\0'; | |
b3ced9ba | 9589 | |
6f8976bf | 9590 | int len = (int) (p - buf2); |
6cc8564b LM |
9591 | int max_chars; |
9592 | ||
9593 | if (remote_packet_max_chars < 0) | |
9594 | max_chars = len; | |
9595 | else | |
9596 | max_chars = remote_packet_max_chars; | |
6f8976bf YQ |
9597 | |
9598 | std::string str | |
6cc8564b | 9599 | = escape_buffer (buf2, std::min (len, max_chars)); |
6f8976bf | 9600 | |
6cc8564b | 9601 | if (len > max_chars) |
2189c312 SM |
9602 | remote_debug_printf_nofunc |
9603 | ("Sending packet: %s [%d bytes omitted]", str.c_str (), | |
9604 | len - max_chars); | |
9605 | else | |
9606 | remote_debug_printf_nofunc ("Sending packet: %s", str.c_str ()); | |
c906108c | 9607 | } |
c33e31fd | 9608 | remote_serial_write (buf2, p - buf2); |
c906108c | 9609 | |
a6f3e723 SL |
9610 | /* If this is a no acks version of the remote protocol, send the |
9611 | packet and move on. */ | |
9612 | if (rs->noack_mode) | |
dda83cd7 | 9613 | break; |
a6f3e723 | 9614 | |
74531fed PA |
9615 | /* Read until either a timeout occurs (-2) or '+' is read. |
9616 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9617 | while (1) |
9618 | { | |
9619 | ch = readchar (remote_timeout); | |
9620 | ||
c906108c SS |
9621 | switch (ch) |
9622 | { | |
9623 | case '+': | |
2189c312 | 9624 | remote_debug_printf_nofunc ("Received Ack"); |
c906108c | 9625 | return 1; |
1216fa2c | 9626 | case '-': |
2189c312 | 9627 | remote_debug_printf_nofunc ("Received Nak"); |
a17d146e | 9628 | /* FALLTHROUGH */ |
c906108c | 9629 | case SERIAL_TIMEOUT: |
c5aa993b | 9630 | tcount++; |
c906108c | 9631 | if (tcount > 3) |
b80406ac | 9632 | return 0; |
23860348 | 9633 | break; /* Retransmit buffer. */ |
c906108c SS |
9634 | case '$': |
9635 | { | |
2189c312 | 9636 | remote_debug_printf ("Packet instead of Ack, ignoring it"); |
d6f7abdf AC |
9637 | /* It's probably an old response sent because an ACK |
9638 | was lost. Gobble up the packet and ack it so it | |
9639 | doesn't get retransmitted when we resend this | |
9640 | packet. */ | |
6d820c5c | 9641 | skip_frame (); |
c33e31fd | 9642 | remote_serial_write ("+", 1); |
23860348 | 9643 | continue; /* Now, go look for +. */ |
c906108c | 9644 | } |
74531fed PA |
9645 | |
9646 | case '%': | |
9647 | { | |
9648 | int val; | |
9649 | ||
9650 | /* If we got a notification, handle it, and go back to looking | |
9651 | for an ack. */ | |
9652 | /* We've found the start of a notification. Now | |
9653 | collect the data. */ | |
8d64371b | 9654 | val = read_frame (&rs->buf); |
74531fed PA |
9655 | if (val >= 0) |
9656 | { | |
2189c312 SM |
9657 | remote_debug_printf_nofunc |
9658 | (" Notification received: %s", | |
9659 | escape_buffer (rs->buf.data (), val).c_str ()); | |
6e5abd65 | 9660 | |
8d64371b | 9661 | handle_notification (rs->notif_state, rs->buf.data ()); |
74531fed PA |
9662 | /* We're in sync now, rewait for the ack. */ |
9663 | tcount = 0; | |
9664 | } | |
9665 | else | |
2189c312 SM |
9666 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9667 | rs->buf.data ()); | |
74531fed PA |
9668 | continue; |
9669 | } | |
9670 | /* fall-through */ | |
c906108c | 9671 | default: |
2189c312 SM |
9672 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9673 | rs->buf.data ()); | |
c906108c SS |
9674 | continue; |
9675 | } | |
23860348 | 9676 | break; /* Here to retransmit. */ |
c906108c SS |
9677 | } |
9678 | ||
9679 | #if 0 | |
9680 | /* This is wrong. If doing a long backtrace, the user should be | |
dda83cd7 SM |
9681 | able to get out next time we call QUIT, without anything as |
9682 | violent as interrupt_query. If we want to provide a way out of | |
9683 | here without getting to the next QUIT, it should be based on | |
9684 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9685 | if (quit_flag) |
9686 | { | |
9687 | quit_flag = 0; | |
9688 | interrupt_query (); | |
9689 | } | |
9690 | #endif | |
9691 | } | |
a5c0808e | 9692 | |
a6f3e723 | 9693 | return 0; |
c906108c SS |
9694 | } |
9695 | ||
6d820c5c DJ |
9696 | /* Come here after finding the start of a frame when we expected an |
9697 | ack. Do our best to discard the rest of this packet. */ | |
9698 | ||
6b8edb51 PA |
9699 | void |
9700 | remote_target::skip_frame () | |
6d820c5c DJ |
9701 | { |
9702 | int c; | |
9703 | ||
9704 | while (1) | |
9705 | { | |
9706 | c = readchar (remote_timeout); | |
9707 | switch (c) | |
9708 | { | |
9709 | case SERIAL_TIMEOUT: | |
9710 | /* Nothing we can do. */ | |
9711 | return; | |
9712 | case '#': | |
9713 | /* Discard the two bytes of checksum and stop. */ | |
9714 | c = readchar (remote_timeout); | |
9715 | if (c >= 0) | |
9716 | c = readchar (remote_timeout); | |
9717 | ||
9718 | return; | |
9719 | case '*': /* Run length encoding. */ | |
9720 | /* Discard the repeat count. */ | |
9721 | c = readchar (remote_timeout); | |
9722 | if (c < 0) | |
9723 | return; | |
9724 | break; | |
9725 | default: | |
9726 | /* A regular character. */ | |
9727 | break; | |
9728 | } | |
9729 | } | |
9730 | } | |
9731 | ||
c906108c | 9732 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9733 | into *BUF, verifying the checksum, length, and handling run-length |
9734 | compression. NUL terminate the buffer. If there is not enough room, | |
8d64371b | 9735 | expand *BUF. |
c906108c | 9736 | |
c2d11a7d JM |
9737 | Returns -1 on error, number of characters in buffer (ignoring the |
9738 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9739 | SERIAL status indications). */ |
c2d11a7d | 9740 | |
6b8edb51 | 9741 | long |
8d64371b | 9742 | remote_target::read_frame (gdb::char_vector *buf_p) |
c906108c SS |
9743 | { |
9744 | unsigned char csum; | |
c2d11a7d | 9745 | long bc; |
c906108c | 9746 | int c; |
8d64371b | 9747 | char *buf = buf_p->data (); |
a6f3e723 | 9748 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9749 | |
9750 | csum = 0; | |
c2d11a7d | 9751 | bc = 0; |
c906108c SS |
9752 | |
9753 | while (1) | |
9754 | { | |
9755 | c = readchar (remote_timeout); | |
c906108c SS |
9756 | switch (c) |
9757 | { | |
9758 | case SERIAL_TIMEOUT: | |
2189c312 | 9759 | remote_debug_printf ("Timeout in mid-packet, retrying"); |
c2d11a7d | 9760 | return -1; |
2189c312 | 9761 | |
c906108c | 9762 | case '$': |
2189c312 | 9763 | remote_debug_printf ("Saw new packet start in middle of old one"); |
23860348 | 9764 | return -1; /* Start a new packet, count retries. */ |
2189c312 | 9765 | |
c906108c SS |
9766 | case '#': |
9767 | { | |
9768 | unsigned char pktcsum; | |
e1b09194 AC |
9769 | int check_0 = 0; |
9770 | int check_1 = 0; | |
c906108c | 9771 | |
c2d11a7d | 9772 | buf[bc] = '\0'; |
c906108c | 9773 | |
e1b09194 AC |
9774 | check_0 = readchar (remote_timeout); |
9775 | if (check_0 >= 0) | |
9776 | check_1 = readchar (remote_timeout); | |
802188a7 | 9777 | |
e1b09194 AC |
9778 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9779 | { | |
2189c312 | 9780 | remote_debug_printf ("Timeout in checksum, retrying"); |
e1b09194 AC |
9781 | return -1; |
9782 | } | |
9783 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 | 9784 | { |
2189c312 | 9785 | remote_debug_printf ("Communication error in checksum"); |
40e3f985 FN |
9786 | return -1; |
9787 | } | |
c906108c | 9788 | |
a6f3e723 SL |
9789 | /* Don't recompute the checksum; with no ack packets we |
9790 | don't have any way to indicate a packet retransmission | |
9791 | is necessary. */ | |
9792 | if (rs->noack_mode) | |
9793 | return bc; | |
9794 | ||
e1b09194 | 9795 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9796 | if (csum == pktcsum) |
dda83cd7 | 9797 | return bc; |
c906108c | 9798 | |
2189c312 SM |
9799 | remote_debug_printf |
9800 | ("Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s", | |
9801 | pktcsum, csum, escape_buffer (buf, bc).c_str ()); | |
6e5abd65 | 9802 | |
c2d11a7d | 9803 | /* Number of characters in buffer ignoring trailing |
dda83cd7 | 9804 | NULL. */ |
c2d11a7d | 9805 | return -1; |
c906108c | 9806 | } |
23860348 | 9807 | case '*': /* Run length encoding. */ |
dda83cd7 | 9808 | { |
c2c6d25f | 9809 | int repeat; |
c906108c | 9810 | |
24b21115 | 9811 | csum += c; |
b4501125 AC |
9812 | c = readchar (remote_timeout); |
9813 | csum += c; | |
23860348 | 9814 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9815 | |
23860348 | 9816 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9817 | |
6d820c5c | 9818 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9819 | { |
8d64371b | 9820 | if (bc + repeat - 1 >= buf_p->size () - 1) |
6d820c5c DJ |
9821 | { |
9822 | /* Make some more room in the buffer. */ | |
8d64371b TT |
9823 | buf_p->resize (buf_p->size () + repeat); |
9824 | buf = buf_p->data (); | |
6d820c5c DJ |
9825 | } |
9826 | ||
c2d11a7d JM |
9827 | memset (&buf[bc], buf[bc - 1], repeat); |
9828 | bc += repeat; | |
c2c6d25f JM |
9829 | continue; |
9830 | } | |
9831 | ||
c2d11a7d | 9832 | buf[bc] = '\0'; |
6d820c5c | 9833 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9834 | return -1; |
c2c6d25f | 9835 | } |
c906108c | 9836 | default: |
8d64371b | 9837 | if (bc >= buf_p->size () - 1) |
c906108c | 9838 | { |
6d820c5c | 9839 | /* Make some more room in the buffer. */ |
8d64371b TT |
9840 | buf_p->resize (buf_p->size () * 2); |
9841 | buf = buf_p->data (); | |
c906108c SS |
9842 | } |
9843 | ||
6d820c5c DJ |
9844 | buf[bc++] = c; |
9845 | csum += c; | |
9846 | continue; | |
c906108c SS |
9847 | } |
9848 | } | |
9849 | } | |
9850 | ||
ed2b7c17 TT |
9851 | /* Set this to the maximum number of seconds to wait instead of waiting forever |
9852 | in target_wait(). If this timer times out, then it generates an error and | |
9853 | the command is aborted. This replaces most of the need for timeouts in the | |
9854 | GDB test suite, and makes it possible to distinguish between a hung target | |
9855 | and one with slow communications. */ | |
9856 | ||
9857 | static int watchdog = 0; | |
9858 | static void | |
9859 | show_watchdog (struct ui_file *file, int from_tty, | |
9860 | struct cmd_list_element *c, const char *value) | |
9861 | { | |
9862 | fprintf_filtered (file, _("Watchdog timer is %s.\n"), value); | |
9863 | } | |
9864 | ||
c906108c | 9865 | /* Read a packet from the remote machine, with error checking, and |
8d64371b TT |
9866 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9867 | FOREVER, wait forever rather than timing out; this is used (in | |
9868 | synchronous mode) to wait for a target that is is executing user | |
9869 | code to stop. */ | |
d9fcf2fb JM |
9870 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9871 | don't have to change all the calls to getpkt to deal with the | |
9872 | return value, because at the moment I don't know what the right | |
23860348 | 9873 | thing to do it for those. */ |
6b8edb51 | 9874 | |
c906108c | 9875 | void |
8d64371b | 9876 | remote_target::getpkt (gdb::char_vector *buf, int forever) |
d9fcf2fb | 9877 | { |
8d64371b | 9878 | getpkt_sane (buf, forever); |
d9fcf2fb JM |
9879 | } |
9880 | ||
9881 | ||
9882 | /* Read a packet from the remote machine, with error checking, and | |
8d64371b TT |
9883 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9884 | FOREVER, wait forever rather than timing out; this is used (in | |
9885 | synchronous mode) to wait for a target that is is executing user | |
9886 | code to stop. If FOREVER == 0, this function is allowed to time | |
9887 | out gracefully and return an indication of this to the caller. | |
9888 | Otherwise return the number of bytes read. If EXPECTING_NOTIF, | |
9889 | consider receiving a notification enough reason to return to the | |
9890 | caller. *IS_NOTIF is an output boolean that indicates whether *BUF | |
9891 | holds a notification or not (a regular packet). */ | |
74531fed | 9892 | |
6b8edb51 | 9893 | int |
8d64371b | 9894 | remote_target::getpkt_or_notif_sane_1 (gdb::char_vector *buf, |
6b8edb51 PA |
9895 | int forever, int expecting_notif, |
9896 | int *is_notif) | |
c906108c | 9897 | { |
2d717e4f | 9898 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9899 | int c; |
9900 | int tries; | |
9901 | int timeout; | |
df4b58fe | 9902 | int val = -1; |
c906108c | 9903 | |
2d717e4f DJ |
9904 | /* We're reading a new response. Make sure we don't look at a |
9905 | previously cached response. */ | |
9906 | rs->cached_wait_status = 0; | |
9907 | ||
8d64371b | 9908 | strcpy (buf->data (), "timeout"); |
c906108c SS |
9909 | |
9910 | if (forever) | |
74531fed PA |
9911 | timeout = watchdog > 0 ? watchdog : -1; |
9912 | else if (expecting_notif) | |
9913 | timeout = 0; /* There should already be a char in the buffer. If | |
9914 | not, bail out. */ | |
c906108c SS |
9915 | else |
9916 | timeout = remote_timeout; | |
9917 | ||
9918 | #define MAX_TRIES 3 | |
9919 | ||
74531fed PA |
9920 | /* Process any number of notifications, and then return when |
9921 | we get a packet. */ | |
9922 | for (;;) | |
c906108c | 9923 | { |
d9c43928 | 9924 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9925 | times. */ |
9926 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9927 | { |
74531fed PA |
9928 | /* This can loop forever if the remote side sends us |
9929 | characters continuously, but if it pauses, we'll get | |
9930 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9931 | we'll count that as a retry. | |
9932 | ||
9933 | Note that even when forever is set, we will only wait | |
9934 | forever prior to the start of a packet. After that, we | |
9935 | expect characters to arrive at a brisk pace. They should | |
9936 | show up within remote_timeout intervals. */ | |
9937 | do | |
9938 | c = readchar (timeout); | |
9939 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9940 | |
9941 | if (c == SERIAL_TIMEOUT) | |
9942 | { | |
74531fed PA |
9943 | if (expecting_notif) |
9944 | return -1; /* Don't complain, it's normal to not get | |
9945 | anything in this case. */ | |
9946 | ||
23860348 | 9947 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9948 | { |
5b6d1e4f | 9949 | remote_unpush_target (this); |
598d3636 JK |
9950 | throw_error (TARGET_CLOSE_ERROR, |
9951 | _("Watchdog timeout has expired. " | |
9952 | "Target detached.")); | |
c906108c | 9953 | } |
2189c312 SM |
9954 | |
9955 | remote_debug_printf ("Timed out."); | |
c906108c | 9956 | } |
74531fed PA |
9957 | else |
9958 | { | |
9959 | /* We've found the start of a packet or notification. | |
9960 | Now collect the data. */ | |
8d64371b | 9961 | val = read_frame (buf); |
74531fed PA |
9962 | if (val >= 0) |
9963 | break; | |
9964 | } | |
9965 | ||
c33e31fd | 9966 | remote_serial_write ("-", 1); |
c906108c | 9967 | } |
c906108c | 9968 | |
74531fed PA |
9969 | if (tries > MAX_TRIES) |
9970 | { | |
9971 | /* We have tried hard enough, and just can't receive the | |
9972 | packet/notification. Give up. */ | |
9973 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9974 | |
74531fed PA |
9975 | /* Skip the ack char if we're in no-ack mode. */ |
9976 | if (!rs->noack_mode) | |
c33e31fd | 9977 | remote_serial_write ("+", 1); |
74531fed PA |
9978 | return -1; |
9979 | } | |
c906108c | 9980 | |
74531fed PA |
9981 | /* If we got an ordinary packet, return that to our caller. */ |
9982 | if (c == '$') | |
c906108c SS |
9983 | { |
9984 | if (remote_debug) | |
43e526b9 | 9985 | { |
6cc8564b LM |
9986 | int max_chars; |
9987 | ||
9988 | if (remote_packet_max_chars < 0) | |
9989 | max_chars = val; | |
9990 | else | |
9991 | max_chars = remote_packet_max_chars; | |
9992 | ||
6f8976bf | 9993 | std::string str |
8d64371b | 9994 | = escape_buffer (buf->data (), |
6cc8564b | 9995 | std::min (val, max_chars)); |
6f8976bf | 9996 | |
6cc8564b | 9997 | if (val > max_chars) |
2189c312 SM |
9998 | remote_debug_printf_nofunc |
9999 | ("Packet received: %s [%d bytes omitted]", str.c_str (), | |
10000 | val - max_chars); | |
10001 | else | |
10002 | remote_debug_printf_nofunc ("Packet received: %s", | |
10003 | str.c_str ()); | |
43e526b9 | 10004 | } |
a6f3e723 SL |
10005 | |
10006 | /* Skip the ack char if we're in no-ack mode. */ | |
10007 | if (!rs->noack_mode) | |
c33e31fd | 10008 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
10009 | if (is_notif != NULL) |
10010 | *is_notif = 0; | |
0876f84a | 10011 | return val; |
c906108c SS |
10012 | } |
10013 | ||
74531fed PA |
10014 | /* If we got a notification, handle it, and go back to looking |
10015 | for a packet. */ | |
10016 | else | |
10017 | { | |
10018 | gdb_assert (c == '%'); | |
10019 | ||
2189c312 SM |
10020 | remote_debug_printf_nofunc |
10021 | (" Notification received: %s", | |
10022 | escape_buffer (buf->data (), val).c_str ()); | |
6e5abd65 | 10023 | |
fee9eda9 YQ |
10024 | if (is_notif != NULL) |
10025 | *is_notif = 1; | |
c906108c | 10026 | |
8d64371b | 10027 | handle_notification (rs->notif_state, buf->data ()); |
c906108c | 10028 | |
74531fed | 10029 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 10030 | |
74531fed | 10031 | if (expecting_notif) |
fee9eda9 | 10032 | return val; |
74531fed PA |
10033 | } |
10034 | } | |
10035 | } | |
10036 | ||
6b8edb51 | 10037 | int |
8d64371b | 10038 | remote_target::getpkt_sane (gdb::char_vector *buf, int forever) |
74531fed | 10039 | { |
8d64371b | 10040 | return getpkt_or_notif_sane_1 (buf, forever, 0, NULL); |
74531fed PA |
10041 | } |
10042 | ||
6b8edb51 | 10043 | int |
8d64371b | 10044 | remote_target::getpkt_or_notif_sane (gdb::char_vector *buf, int forever, |
6b8edb51 | 10045 | int *is_notif) |
74531fed | 10046 | { |
8d64371b | 10047 | return getpkt_or_notif_sane_1 (buf, forever, 1, is_notif); |
c906108c | 10048 | } |
74531fed | 10049 | |
cbb8991c DB |
10050 | /* Kill any new fork children of process PID that haven't been |
10051 | processed by follow_fork. */ | |
10052 | ||
6b8edb51 PA |
10053 | void |
10054 | remote_target::kill_new_fork_children (int pid) | |
cbb8991c | 10055 | { |
6b8edb51 | 10056 | remote_state *rs = get_remote_state (); |
cbb8991c | 10057 | struct notif_client *notif = ¬if_client_stop; |
cbb8991c DB |
10058 | |
10059 | /* Kill the fork child threads of any threads in process PID | |
10060 | that are stopped at a fork event. */ | |
5b6d1e4f | 10061 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c DB |
10062 | { |
10063 | struct target_waitstatus *ws = &thread->pending_follow; | |
10064 | ||
10065 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
10066 | { | |
953edf2b | 10067 | int child_pid = ws->value.related_pid.pid (); |
cbb8991c DB |
10068 | int res; |
10069 | ||
6b8edb51 | 10070 | res = remote_vkill (child_pid); |
cbb8991c DB |
10071 | if (res != 0) |
10072 | error (_("Can't kill fork child process %d"), child_pid); | |
10073 | } | |
10074 | } | |
10075 | ||
10076 | /* Check for any pending fork events (not reported or processed yet) | |
10077 | in process PID and kill those fork child threads as well. */ | |
10078 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
10079 | for (auto &event : rs->stop_reply_queue) |
10080 | if (is_pending_fork_parent (&event->ws, pid, event->ptid)) | |
10081 | { | |
10082 | int child_pid = event->ws.value.related_pid.pid (); | |
10083 | int res; | |
10084 | ||
10085 | res = remote_vkill (child_pid); | |
10086 | if (res != 0) | |
10087 | error (_("Can't kill fork child process %d"), child_pid); | |
10088 | } | |
cbb8991c DB |
10089 | } |
10090 | ||
c906108c | 10091 | \f |
8020350c DB |
10092 | /* Target hook to kill the current inferior. */ |
10093 | ||
f6ac5f3d PA |
10094 | void |
10095 | remote_target::kill () | |
43ff13b4 | 10096 | { |
8020350c | 10097 | int res = -1; |
e99b03dc | 10098 | int pid = inferior_ptid.pid (); |
8020350c | 10099 | struct remote_state *rs = get_remote_state (); |
0fdf84ca | 10100 | |
8020350c | 10101 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 10102 | { |
8020350c DB |
10103 | /* If we're stopped while forking and we haven't followed yet, |
10104 | kill the child task. We need to do this before killing the | |
10105 | parent task because if this is a vfork then the parent will | |
10106 | be sleeping. */ | |
6b8edb51 | 10107 | kill_new_fork_children (pid); |
8020350c | 10108 | |
6b8edb51 | 10109 | res = remote_vkill (pid); |
8020350c | 10110 | if (res == 0) |
0fdf84ca | 10111 | { |
bc1e6c81 | 10112 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
10113 | return; |
10114 | } | |
8020350c | 10115 | } |
0fdf84ca | 10116 | |
8020350c DB |
10117 | /* If we are in 'target remote' mode and we are killing the only |
10118 | inferior, then we will tell gdbserver to exit and unpush the | |
10119 | target. */ | |
10120 | if (res == -1 && !remote_multi_process_p (rs) | |
5b6d1e4f | 10121 | && number_of_live_inferiors (this) == 1) |
8020350c DB |
10122 | { |
10123 | remote_kill_k (); | |
10124 | ||
10125 | /* We've killed the remote end, we get to mourn it. If we are | |
10126 | not in extended mode, mourning the inferior also unpushes | |
10127 | remote_ops from the target stack, which closes the remote | |
10128 | connection. */ | |
bc1e6c81 | 10129 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
10130 | |
10131 | return; | |
0fdf84ca | 10132 | } |
43ff13b4 | 10133 | |
8020350c | 10134 | error (_("Can't kill process")); |
43ff13b4 JM |
10135 | } |
10136 | ||
8020350c DB |
10137 | /* Send a kill request to the target using the 'vKill' packet. */ |
10138 | ||
6b8edb51 PA |
10139 | int |
10140 | remote_target::remote_vkill (int pid) | |
82f73884 | 10141 | { |
4082afcc | 10142 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
10143 | return -1; |
10144 | ||
6b8edb51 PA |
10145 | remote_state *rs = get_remote_state (); |
10146 | ||
82f73884 | 10147 | /* Tell the remote target to detach. */ |
8d64371b | 10148 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vKill;%x", pid); |
82f73884 | 10149 | putpkt (rs->buf); |
8d64371b | 10150 | getpkt (&rs->buf, 0); |
82f73884 | 10151 | |
4082afcc PA |
10152 | switch (packet_ok (rs->buf, |
10153 | &remote_protocol_packets[PACKET_vKill])) | |
10154 | { | |
10155 | case PACKET_OK: | |
10156 | return 0; | |
10157 | case PACKET_ERROR: | |
10158 | return 1; | |
10159 | case PACKET_UNKNOWN: | |
10160 | return -1; | |
10161 | default: | |
10162 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
10163 | } | |
82f73884 PA |
10164 | } |
10165 | ||
8020350c DB |
10166 | /* Send a kill request to the target using the 'k' packet. */ |
10167 | ||
6b8edb51 PA |
10168 | void |
10169 | remote_target::remote_kill_k () | |
82f73884 | 10170 | { |
8020350c DB |
10171 | /* Catch errors so the user can quit from gdb even when we |
10172 | aren't on speaking terms with the remote system. */ | |
a70b8144 | 10173 | try |
82f73884 | 10174 | { |
82f73884 | 10175 | putpkt ("k"); |
82f73884 | 10176 | } |
230d2906 | 10177 | catch (const gdb_exception_error &ex) |
8020350c DB |
10178 | { |
10179 | if (ex.error == TARGET_CLOSE_ERROR) | |
10180 | { | |
10181 | /* If we got an (EOF) error that caused the target | |
10182 | to go away, then we're done, that's what we wanted. | |
10183 | "k" is susceptible to cause a premature EOF, given | |
10184 | that the remote server isn't actually required to | |
10185 | reply to "k", and it can happen that it doesn't | |
10186 | even get to reply ACK to the "k". */ | |
10187 | return; | |
10188 | } | |
82f73884 | 10189 | |
8020350c DB |
10190 | /* Otherwise, something went wrong. We didn't actually kill |
10191 | the target. Just propagate the exception, and let the | |
10192 | user or higher layers decide what to do. */ | |
eedc3f4f | 10193 | throw; |
8020350c | 10194 | } |
82f73884 PA |
10195 | } |
10196 | ||
f6ac5f3d PA |
10197 | void |
10198 | remote_target::mourn_inferior () | |
c906108c | 10199 | { |
8020350c | 10200 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 10201 | |
9607784a PA |
10202 | /* We're no longer interested in notification events of an inferior |
10203 | that exited or was killed/detached. */ | |
10204 | discard_pending_stop_replies (current_inferior ()); | |
10205 | ||
8020350c | 10206 | /* In 'target remote' mode with one inferior, we close the connection. */ |
5b6d1e4f | 10207 | if (!rs->extended && number_of_live_inferiors (this) <= 1) |
8020350c | 10208 | { |
5b6d1e4f | 10209 | remote_unpush_target (this); |
8020350c DB |
10210 | return; |
10211 | } | |
c906108c | 10212 | |
e24a49d8 PA |
10213 | /* In case we got here due to an error, but we're going to stay |
10214 | connected. */ | |
10215 | rs->waiting_for_stop_reply = 0; | |
10216 | ||
dc1981d7 PA |
10217 | /* If the current general thread belonged to the process we just |
10218 | detached from or has exited, the remote side current general | |
10219 | thread becomes undefined. Considering a case like this: | |
10220 | ||
10221 | - We just got here due to a detach. | |
10222 | - The process that we're detaching from happens to immediately | |
10223 | report a global breakpoint being hit in non-stop mode, in the | |
10224 | same thread we had selected before. | |
10225 | - GDB attaches to this process again. | |
10226 | - This event happens to be the next event we handle. | |
10227 | ||
10228 | GDB would consider that the current general thread didn't need to | |
10229 | be set on the stub side (with Hg), since for all it knew, | |
10230 | GENERAL_THREAD hadn't changed. | |
10231 | ||
10232 | Notice that although in all-stop mode, the remote server always | |
10233 | sets the current thread to the thread reporting the stop event, | |
10234 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
10235 | not* change the current thread when reporting a breakpoint hit, | |
10236 | due to the decoupling of event reporting and event handling. | |
10237 | ||
10238 | To keep things simple, we always invalidate our notion of the | |
10239 | current thread. */ | |
47f8a51d | 10240 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 10241 | |
8020350c | 10242 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 | 10243 | generic_mourn_inferior (); |
2d717e4f | 10244 | } |
c906108c | 10245 | |
57810aa7 | 10246 | bool |
f6ac5f3d | 10247 | extended_remote_target::supports_disable_randomization () |
03583c20 | 10248 | { |
4082afcc | 10249 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
10250 | } |
10251 | ||
6b8edb51 PA |
10252 | void |
10253 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
10254 | { |
10255 | struct remote_state *rs = get_remote_state (); | |
10256 | char *reply; | |
10257 | ||
8d64371b TT |
10258 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
10259 | "QDisableRandomization:%x", val); | |
03583c20 | 10260 | putpkt (rs->buf); |
b6bb3468 | 10261 | reply = remote_get_noisy_reply (); |
03583c20 UW |
10262 | if (*reply == '\0') |
10263 | error (_("Target does not support QDisableRandomization.")); | |
10264 | if (strcmp (reply, "OK") != 0) | |
10265 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
10266 | } | |
10267 | ||
6b8edb51 PA |
10268 | int |
10269 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
10270 | { |
10271 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 10272 | int len; |
94585166 | 10273 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 10274 | |
2d717e4f DJ |
10275 | /* If the user has disabled vRun support, or we have detected that |
10276 | support is not available, do not try it. */ | |
4082afcc | 10277 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 10278 | return -1; |
424163ea | 10279 | |
8d64371b TT |
10280 | strcpy (rs->buf.data (), "vRun;"); |
10281 | len = strlen (rs->buf.data ()); | |
c906108c | 10282 | |
2d717e4f DJ |
10283 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
10284 | error (_("Remote file name too long for run packet")); | |
8d64371b | 10285 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf.data () + len, |
9f1b45b0 | 10286 | strlen (remote_exec_file)); |
2d717e4f | 10287 | |
7c5ded6a | 10288 | if (!args.empty ()) |
2d717e4f | 10289 | { |
2d717e4f | 10290 | int i; |
2d717e4f | 10291 | |
773a1edc | 10292 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
10293 | for (i = 0; argv[i] != NULL; i++) |
10294 | { | |
10295 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
10296 | error (_("Argument list too long for run packet")); | |
10297 | rs->buf[len++] = ';'; | |
8d64371b | 10298 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf.data () + len, |
9f1b45b0 | 10299 | strlen (argv[i])); |
2d717e4f | 10300 | } |
2d717e4f DJ |
10301 | } |
10302 | ||
10303 | rs->buf[len++] = '\0'; | |
10304 | ||
10305 | putpkt (rs->buf); | |
8d64371b | 10306 | getpkt (&rs->buf, 0); |
2d717e4f | 10307 | |
4082afcc | 10308 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 10309 | { |
4082afcc | 10310 | case PACKET_OK: |
3405876a | 10311 | /* We have a wait response. All is well. */ |
2d717e4f | 10312 | return 0; |
4082afcc PA |
10313 | case PACKET_UNKNOWN: |
10314 | return -1; | |
10315 | case PACKET_ERROR: | |
2d717e4f DJ |
10316 | if (remote_exec_file[0] == '\0') |
10317 | error (_("Running the default executable on the remote target failed; " | |
10318 | "try \"set remote exec-file\"?")); | |
10319 | else | |
10320 | error (_("Running \"%s\" on the remote target failed"), | |
10321 | remote_exec_file); | |
4082afcc PA |
10322 | default: |
10323 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 10324 | } |
c906108c SS |
10325 | } |
10326 | ||
0a2dde4a SDJ |
10327 | /* Helper function to send set/unset environment packets. ACTION is |
10328 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
10329 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
10330 | sent. */ | |
10331 | ||
6b8edb51 PA |
10332 | void |
10333 | remote_target::send_environment_packet (const char *action, | |
10334 | const char *packet, | |
10335 | const char *value) | |
0a2dde4a | 10336 | { |
6b8edb51 PA |
10337 | remote_state *rs = get_remote_state (); |
10338 | ||
0a2dde4a SDJ |
10339 | /* Convert the environment variable to an hex string, which |
10340 | is the best format to be transmitted over the wire. */ | |
10341 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
10342 | strlen (value)); | |
10343 | ||
8d64371b | 10344 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
0a2dde4a SDJ |
10345 | "%s:%s", packet, encoded_value.c_str ()); |
10346 | ||
10347 | putpkt (rs->buf); | |
8d64371b TT |
10348 | getpkt (&rs->buf, 0); |
10349 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10350 | warning (_("Unable to %s environment variable '%s' on remote."), |
10351 | action, value); | |
10352 | } | |
10353 | ||
10354 | /* Helper function to handle the QEnvironment* packets. */ | |
10355 | ||
6b8edb51 PA |
10356 | void |
10357 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 10358 | { |
6b8edb51 PA |
10359 | remote_state *rs = get_remote_state (); |
10360 | ||
0a2dde4a SDJ |
10361 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
10362 | { | |
10363 | putpkt ("QEnvironmentReset"); | |
8d64371b TT |
10364 | getpkt (&rs->buf, 0); |
10365 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10366 | warning (_("Unable to reset environment on remote.")); |
10367 | } | |
10368 | ||
10369 | gdb_environ *e = ¤t_inferior ()->environment; | |
10370 | ||
10371 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
10372 | for (const std::string &el : e->user_set_env ()) | |
6b8edb51 | 10373 | send_environment_packet ("set", "QEnvironmentHexEncoded", |
0a2dde4a SDJ |
10374 | el.c_str ()); |
10375 | ||
10376 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
10377 | for (const std::string &el : e->user_unset_env ()) | |
6b8edb51 | 10378 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
10379 | } |
10380 | ||
bc3b087d SDJ |
10381 | /* Helper function to set the current working directory for the |
10382 | inferior in the remote target. */ | |
10383 | ||
6b8edb51 PA |
10384 | void |
10385 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d SDJ |
10386 | { |
10387 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
10388 | { | |
10389 | const char *inferior_cwd = get_inferior_cwd (); | |
6b8edb51 | 10390 | remote_state *rs = get_remote_state (); |
bc3b087d SDJ |
10391 | |
10392 | if (inferior_cwd != NULL) | |
10393 | { | |
10394 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
10395 | strlen (inferior_cwd)); | |
10396 | ||
8d64371b | 10397 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10398 | "QSetWorkingDir:%s", hexpath.c_str ()); |
10399 | } | |
10400 | else | |
10401 | { | |
10402 | /* An empty inferior_cwd means that the user wants us to | |
10403 | reset the remote server's inferior's cwd. */ | |
8d64371b | 10404 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10405 | "QSetWorkingDir:"); |
10406 | } | |
10407 | ||
10408 | putpkt (rs->buf); | |
8d64371b | 10409 | getpkt (&rs->buf, 0); |
bc3b087d SDJ |
10410 | if (packet_ok (rs->buf, |
10411 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
10412 | != PACKET_OK) | |
10413 | error (_("\ | |
10414 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10415 | directory: %s"), | |
8d64371b | 10416 | rs->buf.data ()); |
bc3b087d SDJ |
10417 | |
10418 | } | |
10419 | } | |
10420 | ||
2d717e4f DJ |
10421 | /* In the extended protocol we want to be able to do things like |
10422 | "run" and have them basically work as expected. So we need | |
10423 | a special create_inferior function. We support changing the | |
10424 | executable file and the command line arguments, but not the | |
10425 | environment. */ | |
10426 | ||
f6ac5f3d PA |
10427 | void |
10428 | extended_remote_target::create_inferior (const char *exec_file, | |
10429 | const std::string &args, | |
10430 | char **env, int from_tty) | |
43ff13b4 | 10431 | { |
3405876a PA |
10432 | int run_worked; |
10433 | char *stop_reply; | |
10434 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10435 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10436 | |
43ff13b4 | 10437 | /* If running asynchronously, register the target file descriptor |
23860348 | 10438 | with the event loop. */ |
75c99385 | 10439 | if (target_can_async_p ()) |
6a3753b3 | 10440 | target_async (1); |
43ff13b4 | 10441 | |
03583c20 | 10442 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10443 | if (supports_disable_randomization ()) |
03583c20 UW |
10444 | extended_remote_disable_randomization (disable_randomization); |
10445 | ||
aefd8b33 SDJ |
10446 | /* If startup-with-shell is on, we inform gdbserver to start the |
10447 | remote inferior using a shell. */ | |
10448 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
10449 | { | |
8d64371b | 10450 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
aefd8b33 SDJ |
10451 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); |
10452 | putpkt (rs->buf); | |
8d64371b TT |
10453 | getpkt (&rs->buf, 0); |
10454 | if (strcmp (rs->buf.data (), "OK") != 0) | |
aefd8b33 SDJ |
10455 | error (_("\ |
10456 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
8d64371b | 10457 | rs->buf.data ()); |
aefd8b33 SDJ |
10458 | } |
10459 | ||
6b8edb51 | 10460 | extended_remote_environment_support (); |
0a2dde4a | 10461 | |
6b8edb51 | 10462 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10463 | |
43ff13b4 | 10464 | /* Now restart the remote server. */ |
3405876a PA |
10465 | run_worked = extended_remote_run (args) != -1; |
10466 | if (!run_worked) | |
2d717e4f DJ |
10467 | { |
10468 | /* vRun was not supported. Fail if we need it to do what the | |
10469 | user requested. */ | |
10470 | if (remote_exec_file[0]) | |
10471 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10472 | if (!args.empty ()) |
65e65158 | 10473 | error (_("Remote target does not support \"set args\" or run ARGS")); |
43ff13b4 | 10474 | |
2d717e4f DJ |
10475 | /* Fall back to "R". */ |
10476 | extended_remote_restart (); | |
10477 | } | |
424163ea | 10478 | |
3405876a | 10479 | /* vRun's success return is a stop reply. */ |
8d64371b | 10480 | stop_reply = run_worked ? rs->buf.data () : NULL; |
3405876a | 10481 | add_current_inferior_and_thread (stop_reply); |
c0a2216e | 10482 | |
2d717e4f DJ |
10483 | /* Get updated offsets, if the stub uses qOffsets. */ |
10484 | get_offsets (); | |
2d717e4f | 10485 | } |
c906108c | 10486 | \f |
c5aa993b | 10487 | |
b775012e LM |
10488 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10489 | the list of conditions (in agent expression bytecode format), if any, the | |
10490 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10491 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10492 | |
10493 | static int | |
10494 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10495 | struct bp_target_info *bp_tgt, char *buf, |
10496 | char *buf_end) | |
b775012e | 10497 | { |
3cde5c42 | 10498 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10499 | return 0; |
10500 | ||
10501 | buf += strlen (buf); | |
bba74b36 | 10502 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10503 | buf++; |
10504 | ||
83621223 | 10505 | /* Send conditions to the target. */ |
d538e36d | 10506 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10507 | { |
bba74b36 | 10508 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10509 | buf += strlen (buf); |
3cde5c42 | 10510 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10511 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10512 | *buf = '\0'; | |
10513 | } | |
b775012e LM |
10514 | return 0; |
10515 | } | |
10516 | ||
d3ce09f5 SS |
10517 | static void |
10518 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10519 | struct bp_target_info *bp_tgt, char *buf) | |
10520 | { | |
3cde5c42 | 10521 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10522 | return; |
10523 | ||
10524 | buf += strlen (buf); | |
10525 | ||
10526 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10527 | buf += strlen (buf); | |
10528 | ||
10529 | /* Concatenate all the agent expressions that are commands into the | |
10530 | cmds parameter. */ | |
df97be55 | 10531 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10532 | { |
10533 | sprintf (buf, "X%x,", aexpr->len); | |
10534 | buf += strlen (buf); | |
3cde5c42 | 10535 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10536 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10537 | *buf = '\0'; | |
10538 | } | |
d3ce09f5 SS |
10539 | } |
10540 | ||
8181d85f DJ |
10541 | /* Insert a breakpoint. On targets that have software breakpoint |
10542 | support, we ask the remote target to do the work; on targets | |
10543 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10544 | |
f6ac5f3d PA |
10545 | int |
10546 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10547 | struct bp_target_info *bp_tgt) | |
c906108c | 10548 | { |
d471ea57 AC |
10549 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10550 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10551 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10552 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10553 | |
4082afcc | 10554 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10555 | { |
0d5ed153 | 10556 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10557 | struct remote_state *rs; |
bba74b36 | 10558 | char *p, *endbuf; |
4fff2411 | 10559 | |
28439a30 PA |
10560 | /* Make sure the remote is pointing at the right process, if |
10561 | necessary. */ | |
10562 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10563 | set_general_process (); | |
10564 | ||
4fff2411 | 10565 | rs = get_remote_state (); |
8d64371b TT |
10566 | p = rs->buf.data (); |
10567 | endbuf = p + get_remote_packet_size (); | |
802188a7 | 10568 | |
96baa820 JM |
10569 | *(p++) = 'Z'; |
10570 | *(p++) = '0'; | |
10571 | *(p++) = ','; | |
7c0f6dcc | 10572 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10573 | p += hexnumstr (p, addr); |
579c6ad9 | 10574 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10575 | |
f6ac5f3d | 10576 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10577 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10578 | |
f6ac5f3d | 10579 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10580 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10581 | ||
6d820c5c | 10582 | putpkt (rs->buf); |
8d64371b | 10583 | getpkt (&rs->buf, 0); |
96baa820 | 10584 | |
6d820c5c | 10585 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10586 | { |
d471ea57 AC |
10587 | case PACKET_ERROR: |
10588 | return -1; | |
10589 | case PACKET_OK: | |
10590 | return 0; | |
10591 | case PACKET_UNKNOWN: | |
10592 | break; | |
96baa820 JM |
10593 | } |
10594 | } | |
c906108c | 10595 | |
0000e5cc PA |
10596 | /* If this breakpoint has target-side commands but this stub doesn't |
10597 | support Z0 packets, throw error. */ | |
3cde5c42 | 10598 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10599 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10600 | Target doesn't support breakpoints that have target side commands.")); | |
10601 | ||
f6ac5f3d | 10602 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10603 | } |
10604 | ||
f6ac5f3d PA |
10605 | int |
10606 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10607 | struct bp_target_info *bp_tgt, | |
10608 | enum remove_bp_reason reason) | |
c906108c | 10609 | { |
8181d85f | 10610 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10611 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10612 | |
4082afcc | 10613 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10614 | { |
8d64371b TT |
10615 | char *p = rs->buf.data (); |
10616 | char *endbuf = p + get_remote_packet_size (); | |
802188a7 | 10617 | |
28439a30 PA |
10618 | /* Make sure the remote is pointing at the right process, if |
10619 | necessary. */ | |
10620 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10621 | set_general_process (); | |
10622 | ||
96baa820 JM |
10623 | *(p++) = 'z'; |
10624 | *(p++) = '0'; | |
10625 | *(p++) = ','; | |
10626 | ||
8181d85f DJ |
10627 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10628 | p += hexnumstr (p, addr); | |
579c6ad9 | 10629 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10630 | |
6d820c5c | 10631 | putpkt (rs->buf); |
8d64371b | 10632 | getpkt (&rs->buf, 0); |
96baa820 | 10633 | |
6d820c5c | 10634 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10635 | } |
10636 | ||
f6ac5f3d | 10637 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10638 | } |
10639 | ||
f486487f | 10640 | static enum Z_packet_type |
d471ea57 AC |
10641 | watchpoint_to_Z_packet (int type) |
10642 | { | |
10643 | switch (type) | |
10644 | { | |
10645 | case hw_write: | |
bb858e6a | 10646 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10647 | break; |
10648 | case hw_read: | |
bb858e6a | 10649 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10650 | break; |
10651 | case hw_access: | |
bb858e6a | 10652 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10653 | break; |
10654 | default: | |
8e65ff28 | 10655 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10656 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10657 | } |
10658 | } | |
10659 | ||
f6ac5f3d PA |
10660 | int |
10661 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10662 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10663 | { |
d01949b6 | 10664 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10665 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10666 | char *p; |
d471ea57 | 10667 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10668 | |
4082afcc | 10669 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10670 | return 1; |
802188a7 | 10671 | |
28439a30 PA |
10672 | /* Make sure the remote is pointing at the right process, if |
10673 | necessary. */ | |
10674 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10675 | set_general_process (); | |
10676 | ||
8d64371b TT |
10677 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "Z%x,", packet); |
10678 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10679 | addr = remote_address_masked (addr); |
10680 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10681 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10682 | |
6d820c5c | 10683 | putpkt (rs->buf); |
8d64371b | 10684 | getpkt (&rs->buf, 0); |
96baa820 | 10685 | |
6d820c5c | 10686 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10687 | { |
10688 | case PACKET_ERROR: | |
d471ea57 | 10689 | return -1; |
85d721b8 PA |
10690 | case PACKET_UNKNOWN: |
10691 | return 1; | |
d471ea57 AC |
10692 | case PACKET_OK: |
10693 | return 0; | |
10694 | } | |
8e65ff28 | 10695 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10696 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10697 | } |
10698 | ||
57810aa7 | 10699 | bool |
f6ac5f3d PA |
10700 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10701 | CORE_ADDR start, int length) | |
283002cf MR |
10702 | { |
10703 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10704 | ||
10705 | return diff < length; | |
10706 | } | |
10707 | ||
d471ea57 | 10708 | |
f6ac5f3d PA |
10709 | int |
10710 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10711 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10712 | { |
d01949b6 | 10713 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10714 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10715 | char *p; |
d471ea57 AC |
10716 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10717 | ||
4082afcc | 10718 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10719 | return -1; |
802188a7 | 10720 | |
28439a30 PA |
10721 | /* Make sure the remote is pointing at the right process, if |
10722 | necessary. */ | |
10723 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10724 | set_general_process (); | |
10725 | ||
8d64371b TT |
10726 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "z%x,", packet); |
10727 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10728 | addr = remote_address_masked (addr); |
10729 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10730 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c | 10731 | putpkt (rs->buf); |
8d64371b | 10732 | getpkt (&rs->buf, 0); |
96baa820 | 10733 | |
6d820c5c | 10734 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10735 | { |
10736 | case PACKET_ERROR: | |
10737 | case PACKET_UNKNOWN: | |
10738 | return -1; | |
10739 | case PACKET_OK: | |
10740 | return 0; | |
10741 | } | |
8e65ff28 | 10742 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10743 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10744 | } |
10745 | ||
3c3bea1c | 10746 | |
60fcc1c3 TT |
10747 | static int remote_hw_watchpoint_limit = -1; |
10748 | static int remote_hw_watchpoint_length_limit = -1; | |
10749 | static int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 10750 | |
f6ac5f3d PA |
10751 | int |
10752 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10753 | { |
10754 | if (remote_hw_watchpoint_length_limit == 0) | |
10755 | return 0; | |
10756 | else if (remote_hw_watchpoint_length_limit < 0) | |
10757 | return 1; | |
10758 | else if (len <= remote_hw_watchpoint_length_limit) | |
10759 | return 1; | |
10760 | else | |
10761 | return 0; | |
10762 | } | |
10763 | ||
f6ac5f3d PA |
10764 | int |
10765 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10766 | { |
3c3bea1c GS |
10767 | if (type == bp_hardware_breakpoint) |
10768 | { | |
10769 | if (remote_hw_breakpoint_limit == 0) | |
10770 | return 0; | |
501eef12 AC |
10771 | else if (remote_hw_breakpoint_limit < 0) |
10772 | return 1; | |
3c3bea1c GS |
10773 | else if (cnt <= remote_hw_breakpoint_limit) |
10774 | return 1; | |
10775 | } | |
10776 | else | |
10777 | { | |
10778 | if (remote_hw_watchpoint_limit == 0) | |
10779 | return 0; | |
501eef12 AC |
10780 | else if (remote_hw_watchpoint_limit < 0) |
10781 | return 1; | |
3c3bea1c GS |
10782 | else if (ot) |
10783 | return -1; | |
10784 | else if (cnt <= remote_hw_watchpoint_limit) | |
10785 | return 1; | |
10786 | } | |
10787 | return -1; | |
10788 | } | |
10789 | ||
f7e6eed5 PA |
10790 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10791 | ||
57810aa7 | 10792 | bool |
f6ac5f3d | 10793 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10794 | { |
799a2abe | 10795 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10796 | |
799a2abe | 10797 | return (thread->priv != NULL |
7aabaf9d SM |
10798 | && (get_remote_thread_info (thread)->stop_reason |
10799 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10800 | } |
10801 | ||
10802 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10803 | remote. */ | |
10804 | ||
57810aa7 | 10805 | bool |
f6ac5f3d | 10806 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10807 | { |
f7e6eed5 PA |
10808 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10809 | } | |
10810 | ||
10811 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10812 | ||
57810aa7 | 10813 | bool |
f6ac5f3d | 10814 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10815 | { |
799a2abe | 10816 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10817 | |
799a2abe | 10818 | return (thread->priv != NULL |
7aabaf9d SM |
10819 | && (get_remote_thread_info (thread)->stop_reason |
10820 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10821 | } |
10822 | ||
10823 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10824 | remote. */ | |
10825 | ||
57810aa7 | 10826 | bool |
f6ac5f3d | 10827 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10828 | { |
f7e6eed5 PA |
10829 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10830 | } | |
10831 | ||
57810aa7 | 10832 | bool |
f6ac5f3d | 10833 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10834 | { |
799a2abe | 10835 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10836 | |
799a2abe | 10837 | return (thread->priv != NULL |
7aabaf9d SM |
10838 | && (get_remote_thread_info (thread)->stop_reason |
10839 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10840 | } |
10841 | ||
57810aa7 | 10842 | bool |
f6ac5f3d | 10843 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10844 | { |
799a2abe | 10845 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10846 | |
799a2abe | 10847 | if (thread->priv != NULL |
7aabaf9d SM |
10848 | && (get_remote_thread_info (thread)->stop_reason |
10849 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10850 | { |
7aabaf9d | 10851 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10852 | return true; |
4aa7a7f5 JJ |
10853 | } |
10854 | ||
57810aa7 | 10855 | return false; |
3c3bea1c GS |
10856 | } |
10857 | ||
10858 | ||
f6ac5f3d PA |
10859 | int |
10860 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10861 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10862 | { |
0d5ed153 | 10863 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10864 | struct remote_state *rs; |
bba74b36 | 10865 | char *p, *endbuf; |
dd61ec5c | 10866 | char *message; |
3c3bea1c | 10867 | |
4082afcc | 10868 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10869 | return -1; |
2bc416ba | 10870 | |
28439a30 PA |
10871 | /* Make sure the remote is pointing at the right process, if |
10872 | necessary. */ | |
10873 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10874 | set_general_process (); | |
10875 | ||
4fff2411 | 10876 | rs = get_remote_state (); |
8d64371b TT |
10877 | p = rs->buf.data (); |
10878 | endbuf = p + get_remote_packet_size (); | |
4fff2411 | 10879 | |
96baa820 JM |
10880 | *(p++) = 'Z'; |
10881 | *(p++) = '1'; | |
10882 | *(p++) = ','; | |
802188a7 | 10883 | |
0d5ed153 | 10884 | addr = remote_address_masked (addr); |
96baa820 | 10885 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10886 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10887 | |
f6ac5f3d | 10888 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10889 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10890 | |
f6ac5f3d | 10891 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10892 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10893 | ||
6d820c5c | 10894 | putpkt (rs->buf); |
8d64371b | 10895 | getpkt (&rs->buf, 0); |
96baa820 | 10896 | |
6d820c5c | 10897 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10898 | { |
10899 | case PACKET_ERROR: | |
dd61ec5c | 10900 | if (rs->buf[1] == '.') |
dda83cd7 SM |
10901 | { |
10902 | message = strchr (&rs->buf[2], '.'); | |
10903 | if (message) | |
10904 | error (_("Remote failure reply: %s"), message + 1); | |
10905 | } | |
dd61ec5c | 10906 | return -1; |
d471ea57 AC |
10907 | case PACKET_UNKNOWN: |
10908 | return -1; | |
10909 | case PACKET_OK: | |
10910 | return 0; | |
10911 | } | |
8e65ff28 | 10912 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10913 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10914 | } |
10915 | ||
d471ea57 | 10916 | |
f6ac5f3d PA |
10917 | int |
10918 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10919 | struct bp_target_info *bp_tgt) | |
96baa820 | 10920 | { |
8181d85f | 10921 | CORE_ADDR addr; |
d01949b6 | 10922 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
10923 | char *p = rs->buf.data (); |
10924 | char *endbuf = p + get_remote_packet_size (); | |
c8189ed1 | 10925 | |
4082afcc | 10926 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10927 | return -1; |
802188a7 | 10928 | |
28439a30 PA |
10929 | /* Make sure the remote is pointing at the right process, if |
10930 | necessary. */ | |
10931 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10932 | set_general_process (); | |
10933 | ||
96baa820 JM |
10934 | *(p++) = 'z'; |
10935 | *(p++) = '1'; | |
10936 | *(p++) = ','; | |
802188a7 | 10937 | |
8181d85f | 10938 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10939 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10940 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10941 | |
6d820c5c | 10942 | putpkt (rs->buf); |
8d64371b | 10943 | getpkt (&rs->buf, 0); |
802188a7 | 10944 | |
6d820c5c | 10945 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10946 | { |
10947 | case PACKET_ERROR: | |
10948 | case PACKET_UNKNOWN: | |
10949 | return -1; | |
10950 | case PACKET_OK: | |
10951 | return 0; | |
10952 | } | |
8e65ff28 | 10953 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10954 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10955 | } |
96baa820 | 10956 | |
4a5e7a5b PA |
10957 | /* Verify memory using the "qCRC:" request. */ |
10958 | ||
f6ac5f3d PA |
10959 | int |
10960 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
10961 | { |
10962 | struct remote_state *rs = get_remote_state (); | |
10963 | unsigned long host_crc, target_crc; | |
10964 | char *tmp; | |
10965 | ||
936d2992 PA |
10966 | /* It doesn't make sense to use qCRC if the remote target is |
10967 | connected but not running. */ | |
55f6301a TT |
10968 | if (target_has_execution () |
10969 | && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
936d2992 PA |
10970 | { |
10971 | enum packet_result result; | |
28439a30 | 10972 | |
936d2992 PA |
10973 | /* Make sure the remote is pointing at the right process. */ |
10974 | set_general_process (); | |
4a5e7a5b | 10975 | |
936d2992 | 10976 | /* FIXME: assumes lma can fit into long. */ |
8d64371b | 10977 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qCRC:%lx,%lx", |
936d2992 PA |
10978 | (long) lma, (long) size); |
10979 | putpkt (rs->buf); | |
4a5e7a5b | 10980 | |
936d2992 PA |
10981 | /* Be clever; compute the host_crc before waiting for target |
10982 | reply. */ | |
10983 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10984 | ||
8d64371b | 10985 | getpkt (&rs->buf, 0); |
4a5e7a5b | 10986 | |
936d2992 PA |
10987 | result = packet_ok (rs->buf, |
10988 | &remote_protocol_packets[PACKET_qCRC]); | |
10989 | if (result == PACKET_ERROR) | |
10990 | return -1; | |
10991 | else if (result == PACKET_OK) | |
10992 | { | |
10993 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10994 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10995 | |
936d2992 PA |
10996 | return (host_crc == target_crc); |
10997 | } | |
10998 | } | |
4a5e7a5b | 10999 | |
f6ac5f3d | 11000 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
11001 | } |
11002 | ||
c906108c SS |
11003 | /* compare-sections command |
11004 | ||
11005 | With no arguments, compares each loadable section in the exec bfd | |
11006 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 11007 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 11008 | |
c906108c | 11009 | static void |
ac88e2de | 11010 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
11011 | { |
11012 | asection *s; | |
ce359b09 | 11013 | const char *sectname; |
c906108c SS |
11014 | bfd_size_type size; |
11015 | bfd_vma lma; | |
11016 | int matched = 0; | |
11017 | int mismatched = 0; | |
4a5e7a5b | 11018 | int res; |
95cf3b38 | 11019 | int read_only = 0; |
c906108c | 11020 | |
7e10abd1 | 11021 | if (!current_program_space->exec_bfd ()) |
8a3fe4f8 | 11022 | error (_("command cannot be used without an exec file")); |
c906108c | 11023 | |
95cf3b38 DT |
11024 | if (args != NULL && strcmp (args, "-r") == 0) |
11025 | { | |
11026 | read_only = 1; | |
11027 | args = NULL; | |
11028 | } | |
11029 | ||
7e10abd1 | 11030 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
c906108c SS |
11031 | { |
11032 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 11033 | continue; /* Skip non-loadable section. */ |
c906108c | 11034 | |
95cf3b38 DT |
11035 | if (read_only && (s->flags & SEC_READONLY) == 0) |
11036 | continue; /* Skip writeable sections */ | |
11037 | ||
fd361982 | 11038 | size = bfd_section_size (s); |
c906108c | 11039 | if (size == 0) |
0df8b418 | 11040 | continue; /* Skip zero-length section. */ |
c906108c | 11041 | |
fd361982 | 11042 | sectname = bfd_section_name (s); |
c906108c | 11043 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 11044 | continue; /* Not the section selected by user. */ |
c906108c | 11045 | |
0df8b418 | 11046 | matched = 1; /* Do this section. */ |
c906108c | 11047 | lma = s->lma; |
c906108c | 11048 | |
b80406ac | 11049 | gdb::byte_vector sectdata (size); |
7e10abd1 TT |
11050 | bfd_get_section_contents (current_program_space->exec_bfd (), s, |
11051 | sectdata.data (), 0, size); | |
c906108c | 11052 | |
b80406ac | 11053 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
11054 | |
11055 | if (res == -1) | |
5af949e3 | 11056 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
11057 | paddress (target_gdbarch (), lma), |
11058 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 11059 | |
5af949e3 | 11060 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
11061 | paddress (target_gdbarch (), lma), |
11062 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 11063 | if (res) |
c906108c SS |
11064 | printf_filtered ("matched.\n"); |
11065 | else | |
c5aa993b JM |
11066 | { |
11067 | printf_filtered ("MIS-MATCHED!\n"); | |
11068 | mismatched++; | |
11069 | } | |
c906108c SS |
11070 | } |
11071 | if (mismatched > 0) | |
936d2992 | 11072 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 11073 | the loaded file\n")); |
c906108c | 11074 | if (args && !matched) |
a3f17187 | 11075 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
11076 | } |
11077 | ||
0e7f50da UW |
11078 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
11079 | into remote target. The number of bytes written to the remote | |
11080 | target is returned, or -1 for error. */ | |
11081 | ||
6b8edb51 PA |
11082 | target_xfer_status |
11083 | remote_target::remote_write_qxfer (const char *object_name, | |
11084 | const char *annex, const gdb_byte *writebuf, | |
11085 | ULONGEST offset, LONGEST len, | |
11086 | ULONGEST *xfered_len, | |
11087 | struct packet_config *packet) | |
0e7f50da UW |
11088 | { |
11089 | int i, buf_len; | |
11090 | ULONGEST n; | |
0e7f50da UW |
11091 | struct remote_state *rs = get_remote_state (); |
11092 | int max_size = get_memory_write_packet_size (); | |
11093 | ||
7cc244de | 11094 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 11095 | return TARGET_XFER_E_IO; |
0e7f50da UW |
11096 | |
11097 | /* Insert header. */ | |
8d64371b | 11098 | i = snprintf (rs->buf.data (), max_size, |
0e7f50da UW |
11099 | "qXfer:%s:write:%s:%s:", |
11100 | object_name, annex ? annex : "", | |
11101 | phex_nz (offset, sizeof offset)); | |
11102 | max_size -= (i + 1); | |
11103 | ||
11104 | /* Escape as much data as fits into rs->buf. */ | |
11105 | buf_len = remote_escape_output | |
8d64371b | 11106 | (writebuf, len, 1, (gdb_byte *) rs->buf.data () + i, &max_size, max_size); |
0e7f50da | 11107 | |
8d64371b TT |
11108 | if (putpkt_binary (rs->buf.data (), i + buf_len) < 0 |
11109 | || getpkt_sane (&rs->buf, 0) < 0 | |
0e7f50da | 11110 | || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 11111 | return TARGET_XFER_E_IO; |
0e7f50da | 11112 | |
8d64371b | 11113 | unpack_varlen_hex (rs->buf.data (), &n); |
9b409511 YQ |
11114 | |
11115 | *xfered_len = n; | |
92ffd475 | 11116 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
11117 | } |
11118 | ||
0876f84a DJ |
11119 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
11120 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
11121 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
11122 | The number of bytes read may be less than LEN without indicating an | |
11123 | EOF. PACKET is checked and updated to indicate whether the remote | |
11124 | target supports this object. */ | |
11125 | ||
6b8edb51 PA |
11126 | target_xfer_status |
11127 | remote_target::remote_read_qxfer (const char *object_name, | |
11128 | const char *annex, | |
11129 | gdb_byte *readbuf, ULONGEST offset, | |
11130 | LONGEST len, | |
11131 | ULONGEST *xfered_len, | |
11132 | struct packet_config *packet) | |
0876f84a | 11133 | { |
0876f84a | 11134 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
11135 | LONGEST i, n, packet_len; |
11136 | ||
7cc244de | 11137 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 11138 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11139 | |
11140 | /* Check whether we've cached an end-of-object packet that matches | |
11141 | this request. */ | |
8e88304f | 11142 | if (rs->finished_object) |
0876f84a | 11143 | { |
8e88304f TT |
11144 | if (strcmp (object_name, rs->finished_object) == 0 |
11145 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
11146 | && offset == rs->finished_offset) | |
9b409511 YQ |
11147 | return TARGET_XFER_EOF; |
11148 | ||
0876f84a DJ |
11149 | |
11150 | /* Otherwise, we're now reading something different. Discard | |
11151 | the cache. */ | |
8e88304f TT |
11152 | xfree (rs->finished_object); |
11153 | xfree (rs->finished_annex); | |
11154 | rs->finished_object = NULL; | |
11155 | rs->finished_annex = NULL; | |
0876f84a DJ |
11156 | } |
11157 | ||
11158 | /* Request only enough to fit in a single packet. The actual data | |
11159 | may not, since we don't know how much of it will need to be escaped; | |
11160 | the target is free to respond with slightly less data. We subtract | |
11161 | five to account for the response type and the protocol frame. */ | |
768adc05 | 11162 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
8d64371b TT |
11163 | snprintf (rs->buf.data (), get_remote_packet_size () - 4, |
11164 | "qXfer:%s:read:%s:%s,%s", | |
0876f84a DJ |
11165 | object_name, annex ? annex : "", |
11166 | phex_nz (offset, sizeof offset), | |
11167 | phex_nz (n, sizeof n)); | |
11168 | i = putpkt (rs->buf); | |
11169 | if (i < 0) | |
2ed4b548 | 11170 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11171 | |
11172 | rs->buf[0] = '\0'; | |
8d64371b | 11173 | packet_len = getpkt_sane (&rs->buf, 0); |
0876f84a | 11174 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 11175 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11176 | |
11177 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8d64371b | 11178 | error (_("Unknown remote qXfer reply: %s"), rs->buf.data ()); |
0876f84a DJ |
11179 | |
11180 | /* 'm' means there is (or at least might be) more data after this | |
11181 | batch. That does not make sense unless there's at least one byte | |
11182 | of data in this reply. */ | |
11183 | if (rs->buf[0] == 'm' && packet_len == 1) | |
11184 | error (_("Remote qXfer reply contained no data.")); | |
11185 | ||
11186 | /* Got some data. */ | |
8d64371b | 11187 | i = remote_unescape_input ((gdb_byte *) rs->buf.data () + 1, |
bc20a4af | 11188 | packet_len - 1, readbuf, n); |
0876f84a DJ |
11189 | |
11190 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
11191 | or possibly empty. If we have the final block of a non-empty |
11192 | object, record this fact to bypass a subsequent partial read. */ | |
11193 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 11194 | { |
8e88304f TT |
11195 | rs->finished_object = xstrdup (object_name); |
11196 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
11197 | rs->finished_offset = offset + i; | |
0876f84a DJ |
11198 | } |
11199 | ||
9b409511 YQ |
11200 | if (i == 0) |
11201 | return TARGET_XFER_EOF; | |
11202 | else | |
11203 | { | |
11204 | *xfered_len = i; | |
11205 | return TARGET_XFER_OK; | |
11206 | } | |
0876f84a DJ |
11207 | } |
11208 | ||
f6ac5f3d PA |
11209 | enum target_xfer_status |
11210 | remote_target::xfer_partial (enum target_object object, | |
11211 | const char *annex, gdb_byte *readbuf, | |
11212 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
11213 | ULONGEST *xfered_len) | |
c906108c | 11214 | { |
82f73884 | 11215 | struct remote_state *rs; |
c906108c | 11216 | int i; |
6d820c5c | 11217 | char *p2; |
1e3ff5ad | 11218 | char query_type; |
124e13d9 | 11219 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 11220 | |
e6e4e701 | 11221 | set_remote_traceframe (); |
82f73884 PA |
11222 | set_general_thread (inferior_ptid); |
11223 | ||
11224 | rs = get_remote_state (); | |
11225 | ||
b2182ed2 | 11226 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
11227 | if (object == TARGET_OBJECT_MEMORY) |
11228 | { | |
2d717e4f DJ |
11229 | /* If the remote target is connected but not running, we should |
11230 | pass this request down to a lower stratum (e.g. the executable | |
11231 | file). */ | |
55f6301a | 11232 | if (!target_has_execution ()) |
9b409511 | 11233 | return TARGET_XFER_EOF; |
2d717e4f | 11234 | |
21e3b9b9 | 11235 | if (writebuf != NULL) |
124e13d9 SM |
11236 | return remote_write_bytes (offset, writebuf, len, unit_size, |
11237 | xfered_len); | |
21e3b9b9 | 11238 | else |
6b8edb51 | 11239 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 11240 | xfered_len); |
21e3b9b9 DJ |
11241 | } |
11242 | ||
4aa995e1 PA |
11243 | /* Handle extra signal info using qxfer packets. */ |
11244 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
11245 | { | |
11246 | if (readbuf) | |
f6ac5f3d | 11247 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 11248 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
11249 | [PACKET_qXfer_siginfo_read]); |
11250 | else | |
f6ac5f3d | 11251 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 11252 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
11253 | &remote_protocol_packets |
11254 | [PACKET_qXfer_siginfo_write]); | |
11255 | } | |
11256 | ||
0fb4aa4b PA |
11257 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
11258 | { | |
11259 | if (readbuf) | |
f6ac5f3d | 11260 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 11261 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
11262 | &remote_protocol_packets |
11263 | [PACKET_qXfer_statictrace_read]); | |
11264 | else | |
2ed4b548 | 11265 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
11266 | } |
11267 | ||
a76d924d DJ |
11268 | /* Only handle flash writes. */ |
11269 | if (writebuf != NULL) | |
11270 | { | |
a76d924d DJ |
11271 | switch (object) |
11272 | { | |
11273 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 11274 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 11275 | writebuf); |
a76d924d DJ |
11276 | |
11277 | default: | |
2ed4b548 | 11278 | return TARGET_XFER_E_IO; |
a76d924d DJ |
11279 | } |
11280 | } | |
4b8a223f | 11281 | |
1e3ff5ad AC |
11282 | /* Map pre-existing objects onto letters. DO NOT do this for new |
11283 | objects!!! Instead specify new query packets. */ | |
11284 | switch (object) | |
c906108c | 11285 | { |
1e3ff5ad AC |
11286 | case TARGET_OBJECT_AVR: |
11287 | query_type = 'R'; | |
11288 | break; | |
802188a7 RM |
11289 | |
11290 | case TARGET_OBJECT_AUXV: | |
0876f84a | 11291 | gdb_assert (annex == NULL); |
f6ac5f3d | 11292 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 11293 | xfered_len, |
0876f84a | 11294 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 11295 | |
23181151 DJ |
11296 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
11297 | return remote_read_qxfer | |
f6ac5f3d | 11298 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
11299 | &remote_protocol_packets[PACKET_qXfer_features]); |
11300 | ||
cfa9d6d9 DJ |
11301 | case TARGET_OBJECT_LIBRARIES: |
11302 | return remote_read_qxfer | |
f6ac5f3d | 11303 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
11304 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
11305 | ||
2268b414 JK |
11306 | case TARGET_OBJECT_LIBRARIES_SVR4: |
11307 | return remote_read_qxfer | |
f6ac5f3d | 11308 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
11309 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
11310 | ||
fd79ecee DJ |
11311 | case TARGET_OBJECT_MEMORY_MAP: |
11312 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11313 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 11314 | xfered_len, |
fd79ecee DJ |
11315 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
11316 | ||
07e059b5 VP |
11317 | case TARGET_OBJECT_OSDATA: |
11318 | /* Should only get here if we're connected. */ | |
5d93a237 | 11319 | gdb_assert (rs->remote_desc); |
07e059b5 | 11320 | return remote_read_qxfer |
f6ac5f3d | 11321 | ("osdata", annex, readbuf, offset, len, xfered_len, |
dda83cd7 | 11322 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
07e059b5 | 11323 | |
dc146f7c VP |
11324 | case TARGET_OBJECT_THREADS: |
11325 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11326 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 11327 | xfered_len, |
dc146f7c VP |
11328 | &remote_protocol_packets[PACKET_qXfer_threads]); |
11329 | ||
b3b9301e PA |
11330 | case TARGET_OBJECT_TRACEFRAME_INFO: |
11331 | gdb_assert (annex == NULL); | |
11332 | return remote_read_qxfer | |
f6ac5f3d | 11333 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 11334 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
11335 | |
11336 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 11337 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 11338 | xfered_len, |
78d85199 | 11339 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
11340 | |
11341 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 11342 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 11343 | xfered_len, |
169081d0 TG |
11344 | &remote_protocol_packets[PACKET_qXfer_uib]); |
11345 | ||
9accd112 | 11346 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 11347 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 11348 | xfered_len, |
dda83cd7 | 11349 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9accd112 | 11350 | |
f4abbc16 | 11351 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 11352 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
11353 | len, xfered_len, |
11354 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
11355 | ||
c78fa86a | 11356 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 11357 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
11358 | len, xfered_len, |
11359 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
11360 | ||
1e3ff5ad | 11361 | default: |
2ed4b548 | 11362 | return TARGET_XFER_E_IO; |
c906108c SS |
11363 | } |
11364 | ||
0df8b418 | 11365 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 11366 | large enough let the caller deal with it. */ |
ea9c271d | 11367 | if (len < get_remote_packet_size ()) |
2ed4b548 | 11368 | return TARGET_XFER_E_IO; |
ea9c271d | 11369 | len = get_remote_packet_size (); |
1e3ff5ad | 11370 | |
23860348 | 11371 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 11372 | if (!rs->remote_desc) |
8a3fe4f8 | 11373 | error (_("remote query is only available after target open")); |
c906108c | 11374 | |
1e3ff5ad | 11375 | gdb_assert (annex != NULL); |
4b8a223f | 11376 | gdb_assert (readbuf != NULL); |
c906108c | 11377 | |
8d64371b | 11378 | p2 = rs->buf.data (); |
c906108c SS |
11379 | *p2++ = 'q'; |
11380 | *p2++ = query_type; | |
11381 | ||
23860348 MS |
11382 | /* We used one buffer char for the remote protocol q command and |
11383 | another for the query type. As the remote protocol encapsulation | |
11384 | uses 4 chars plus one extra in case we are debugging | |
11385 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
11386 | string. */ | |
c906108c | 11387 | i = 0; |
ea9c271d | 11388 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11389 | { |
1e3ff5ad AC |
11390 | /* Bad caller may have sent forbidden characters. */ |
11391 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11392 | *p2++ = annex[i]; | |
c906108c SS |
11393 | i++; |
11394 | } | |
1e3ff5ad AC |
11395 | *p2 = '\0'; |
11396 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11397 | |
6d820c5c | 11398 | i = putpkt (rs->buf); |
c5aa993b | 11399 | if (i < 0) |
2ed4b548 | 11400 | return TARGET_XFER_E_IO; |
c906108c | 11401 | |
8d64371b TT |
11402 | getpkt (&rs->buf, 0); |
11403 | strcpy ((char *) readbuf, rs->buf.data ()); | |
c906108c | 11404 | |
9b409511 | 11405 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11406 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11407 | } |
11408 | ||
09c98b44 DB |
11409 | /* Implementation of to_get_memory_xfer_limit. */ |
11410 | ||
f6ac5f3d PA |
11411 | ULONGEST |
11412 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11413 | { |
11414 | return get_memory_write_packet_size (); | |
11415 | } | |
11416 | ||
f6ac5f3d PA |
11417 | int |
11418 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11419 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11420 | CORE_ADDR *found_addrp) | |
08388c79 | 11421 | { |
f5656ead | 11422 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
11423 | struct remote_state *rs = get_remote_state (); |
11424 | int max_size = get_memory_write_packet_size (); | |
11425 | struct packet_config *packet = | |
11426 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
11427 | /* Number of packet bytes used to encode the pattern; |
11428 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11429 | int escaped_pattern_len; |
0df8b418 | 11430 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11431 | int used_pattern_len; |
11432 | int i; | |
11433 | int found; | |
11434 | ULONGEST found_addr; | |
11435 | ||
4a72de73 TT |
11436 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
11437 | { | |
11438 | return (target_read (this, TARGET_OBJECT_MEMORY, NULL, result, addr, len) | |
11439 | == len); | |
11440 | }; | |
11441 | ||
7cc244de PA |
11442 | /* Don't go to the target if we don't have to. This is done before |
11443 | checking packet_config_support to avoid the possibility that a | |
11444 | success for this edge case means the facility works in | |
11445 | general. */ | |
08388c79 DE |
11446 | if (pattern_len > search_space_len) |
11447 | return 0; | |
11448 | if (pattern_len == 0) | |
11449 | { | |
11450 | *found_addrp = start_addr; | |
11451 | return 1; | |
11452 | } | |
11453 | ||
11454 | /* If we already know the packet isn't supported, fall back to the simple | |
11455 | way of searching memory. */ | |
11456 | ||
4082afcc | 11457 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
11458 | { |
11459 | /* Target doesn't provided special support, fall back and use the | |
11460 | standard support (copy memory and do the search here). */ | |
4a72de73 | 11461 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11462 | pattern, pattern_len, found_addrp); |
11463 | } | |
11464 | ||
28439a30 PA |
11465 | /* Make sure the remote is pointing at the right process. */ |
11466 | set_general_process (); | |
11467 | ||
08388c79 | 11468 | /* Insert header. */ |
8d64371b | 11469 | i = snprintf (rs->buf.data (), max_size, |
08388c79 | 11470 | "qSearch:memory:%s;%s;", |
5af949e3 | 11471 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11472 | phex_nz (search_space_len, sizeof (search_space_len))); |
11473 | max_size -= (i + 1); | |
11474 | ||
11475 | /* Escape as much data as fits into rs->buf. */ | |
11476 | escaped_pattern_len = | |
8d64371b TT |
11477 | remote_escape_output (pattern, pattern_len, 1, |
11478 | (gdb_byte *) rs->buf.data () + i, | |
08388c79 DE |
11479 | &used_pattern_len, max_size); |
11480 | ||
11481 | /* Bail if the pattern is too large. */ | |
11482 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11483 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 | 11484 | |
8d64371b TT |
11485 | if (putpkt_binary (rs->buf.data (), i + escaped_pattern_len) < 0 |
11486 | || getpkt_sane (&rs->buf, 0) < 0 | |
08388c79 DE |
11487 | || packet_ok (rs->buf, packet) != PACKET_OK) |
11488 | { | |
11489 | /* The request may not have worked because the command is not | |
11490 | supported. If so, fall back to the simple way. */ | |
7cc244de | 11491 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 11492 | { |
4a72de73 | 11493 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11494 | pattern, pattern_len, found_addrp); |
11495 | } | |
11496 | return -1; | |
11497 | } | |
11498 | ||
11499 | if (rs->buf[0] == '0') | |
11500 | found = 0; | |
11501 | else if (rs->buf[0] == '1') | |
11502 | { | |
11503 | found = 1; | |
11504 | if (rs->buf[1] != ',') | |
8d64371b TT |
11505 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
11506 | unpack_varlen_hex (&rs->buf[2], &found_addr); | |
08388c79 DE |
11507 | *found_addrp = found_addr; |
11508 | } | |
11509 | else | |
8d64371b | 11510 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
08388c79 DE |
11511 | |
11512 | return found; | |
11513 | } | |
11514 | ||
f6ac5f3d PA |
11515 | void |
11516 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11517 | { |
d01949b6 | 11518 | struct remote_state *rs = get_remote_state (); |
8d64371b | 11519 | char *p = rs->buf.data (); |
96baa820 | 11520 | |
5d93a237 | 11521 | if (!rs->remote_desc) |
8a3fe4f8 | 11522 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11523 | |
23860348 | 11524 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11525 | if (command == NULL) |
11526 | command = ""; | |
11527 | ||
23860348 | 11528 | /* The query prefix. */ |
8d64371b TT |
11529 | strcpy (rs->buf.data (), "qRcmd,"); |
11530 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 | 11531 | |
8d64371b | 11532 | if ((strlen (rs->buf.data ()) + strlen (command) * 2 + 8/*misc*/) |
3e43a32a | 11533 | > get_remote_packet_size ()) |
8a3fe4f8 | 11534 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11535 | |
23860348 | 11536 | /* Encode the actual command. */ |
a30bf1f1 | 11537 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11538 | |
6d820c5c | 11539 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11540 | error (_("Communication problem with target.")); |
96baa820 JM |
11541 | |
11542 | /* get/display the response */ | |
11543 | while (1) | |
11544 | { | |
2e9f7625 DJ |
11545 | char *buf; |
11546 | ||
00bf0b85 | 11547 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11548 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11549 | rs->buf[0] = '\0'; |
8d64371b | 11550 | if (getpkt_sane (&rs->buf, 0) == -1) |
dda83cd7 SM |
11551 | { |
11552 | /* Timeout. Continue to (try to) read responses. | |
11553 | This is better than stopping with an error, assuming the stub | |
11554 | is still executing the (long) monitor command. | |
11555 | If needed, the user can interrupt gdb using C-c, obtaining | |
11556 | an effect similar to stop on timeout. */ | |
11557 | continue; | |
11558 | } | |
8d64371b | 11559 | buf = rs->buf.data (); |
96baa820 | 11560 | if (buf[0] == '\0') |
8a3fe4f8 | 11561 | error (_("Target does not support this command.")); |
96baa820 JM |
11562 | if (buf[0] == 'O' && buf[1] != 'K') |
11563 | { | |
23860348 | 11564 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11565 | continue; |
11566 | } | |
11567 | if (strcmp (buf, "OK") == 0) | |
11568 | break; | |
7be570e7 JM |
11569 | if (strlen (buf) == 3 && buf[0] == 'E' |
11570 | && isdigit (buf[1]) && isdigit (buf[2])) | |
11571 | { | |
8a3fe4f8 | 11572 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11573 | } |
96baa820 JM |
11574 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11575 | { | |
11576 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11577 | |
96baa820 JM |
11578 | fputc_unfiltered (c, outbuf); |
11579 | } | |
11580 | break; | |
11581 | } | |
11582 | } | |
11583 | ||
f6ac5f3d PA |
11584 | std::vector<mem_region> |
11585 | remote_target::memory_map () | |
fd79ecee | 11586 | { |
a664f67e | 11587 | std::vector<mem_region> result; |
9018be22 | 11588 | gdb::optional<gdb::char_vector> text |
328d42d8 SM |
11589 | = target_read_stralloc (current_inferior ()->top_target (), |
11590 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
fd79ecee DJ |
11591 | |
11592 | if (text) | |
9018be22 | 11593 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11594 | |
11595 | return result; | |
11596 | } | |
11597 | ||
c906108c | 11598 | static void |
ac88e2de | 11599 | packet_command (const char *args, int from_tty) |
c906108c | 11600 | { |
6b8edb51 | 11601 | remote_target *remote = get_current_remote_target (); |
c906108c | 11602 | |
6b8edb51 | 11603 | if (remote == nullptr) |
8a3fe4f8 | 11604 | error (_("command can only be used with remote target")); |
c906108c | 11605 | |
6b8edb51 PA |
11606 | remote->packet_command (args, from_tty); |
11607 | } | |
11608 | ||
11609 | void | |
11610 | remote_target::packet_command (const char *args, int from_tty) | |
11611 | { | |
c5aa993b | 11612 | if (!args) |
8a3fe4f8 | 11613 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
11614 | |
11615 | puts_filtered ("sending: "); | |
11616 | print_packet (args); | |
11617 | puts_filtered ("\n"); | |
11618 | putpkt (args); | |
11619 | ||
6b8edb51 PA |
11620 | remote_state *rs = get_remote_state (); |
11621 | ||
8d64371b | 11622 | getpkt (&rs->buf, 0); |
c906108c | 11623 | puts_filtered ("received: "); |
8d64371b | 11624 | print_packet (rs->buf.data ()); |
c906108c SS |
11625 | puts_filtered ("\n"); |
11626 | } | |
11627 | ||
11628 | #if 0 | |
23860348 | 11629 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11630 | |
a14ed312 | 11631 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11632 | |
a14ed312 | 11633 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11634 | |
a14ed312 | 11635 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11636 | |
a14ed312 | 11637 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11638 | |
23860348 | 11639 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11640 | |
a14ed312 | 11641 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11642 | |
23860348 | 11643 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11644 | |
a14ed312 | 11645 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11646 | |
a14ed312 | 11647 | static void init_remote_threadtests (void); |
c906108c | 11648 | |
23860348 | 11649 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11650 | |
11651 | static void | |
0b39b52e | 11652 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11653 | { |
11654 | int sample_thread = SAMPLE_THREAD; | |
11655 | ||
a3f17187 | 11656 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 11657 | set_general_thread (sample_thread); |
c906108c SS |
11658 | } |
11659 | ||
11660 | ||
11661 | static void | |
0b39b52e | 11662 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11663 | { |
11664 | int sample_thread = SAMPLE_THREAD; | |
e99b03dc | 11665 | int pid = inferior_ptid.pid (); |
fd79271b | 11666 | ptid_t ptid = ptid_t (pid, sample_thread, 0); |
c906108c | 11667 | |
79d7f229 | 11668 | if (remote_thread_alive (ptid)) |
c906108c SS |
11669 | printf_filtered ("PASS: Thread alive test\n"); |
11670 | else | |
11671 | printf_filtered ("FAIL: Thread alive test\n"); | |
11672 | } | |
11673 | ||
23860348 | 11674 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11675 | |
11676 | void | |
fba45db2 | 11677 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11678 | { |
11679 | char hexid[20]; | |
11680 | ||
405feb71 | 11681 | pack_threadid (&hexid[0], ref); /* Convert thread id into hex. */ |
c906108c SS |
11682 | hexid[16] = 0; |
11683 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
11684 | } | |
11685 | ||
11686 | static void | |
0b39b52e | 11687 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11688 | { |
11689 | int startflag = 1; | |
11690 | threadref nextthread; | |
11691 | int done, result_count; | |
11692 | threadref threadlist[3]; | |
11693 | ||
11694 | printf_filtered ("Remote Threadlist test\n"); | |
11695 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
11696 | &result_count, &threadlist[0])) | |
11697 | printf_filtered ("FAIL: threadlist test\n"); | |
11698 | else | |
11699 | { | |
11700 | threadref *scan = threadlist; | |
11701 | threadref *limit = scan + result_count; | |
11702 | ||
11703 | while (scan < limit) | |
11704 | output_threadid (" thread ", scan++); | |
11705 | } | |
11706 | } | |
11707 | ||
11708 | void | |
fba45db2 | 11709 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11710 | { |
11711 | output_threadid ("Threadid: ", &info->threadid); | |
11712 | printf_filtered ("Name: %s\n ", info->shortname); | |
11713 | printf_filtered ("State: %s\n", info->display); | |
11714 | printf_filtered ("other: %s\n\n", info->more_display); | |
11715 | } | |
11716 | ||
11717 | int | |
fba45db2 | 11718 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11719 | { |
11720 | int result; | |
11721 | int set; | |
11722 | struct gdb_ext_thread_info threadinfo; | |
11723 | ||
11724 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11725 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11726 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11727 | display_thread_info (&threadinfo); | |
11728 | return result; | |
11729 | } | |
11730 | ||
11731 | static void | |
0b39b52e | 11732 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11733 | { |
11734 | int athread = SAMPLE_THREAD; | |
11735 | threadref thread; | |
11736 | int set; | |
11737 | ||
11738 | int_to_threadref (&thread, athread); | |
11739 | printf_filtered ("Remote Threadinfo test\n"); | |
11740 | if (!get_and_display_threadinfo (&thread)) | |
11741 | printf_filtered ("FAIL cannot get thread info\n"); | |
11742 | } | |
11743 | ||
11744 | static int | |
fba45db2 | 11745 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11746 | { |
11747 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11748 | return get_and_display_threadinfo (ref); | |
11749 | } | |
11750 | ||
11751 | static void | |
0b39b52e | 11752 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
11753 | { |
11754 | printf_filtered ("Remote Threadlist update test\n"); | |
11755 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11756 | } | |
11757 | ||
11758 | static void | |
11759 | init_remote_threadtests (void) | |
11760 | { | |
3e43a32a MS |
11761 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11762 | _("Fetch and print the remote list of " | |
590042fc | 11763 | "thread identifiers, one pkt only.")); |
c906108c | 11764 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
590042fc | 11765 | _("Fetch and display info about one thread.")); |
c906108c | 11766 | add_com ("tset", class_obscure, threadset_test_cmd, |
590042fc | 11767 | _("Test setting to a different thread.")); |
c906108c | 11768 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
590042fc | 11769 | _("Iterate through updating all remote thread info.")); |
c906108c | 11770 | add_com ("talive", class_obscure, threadalive_test, |
590042fc | 11771 | _("Remote thread alive test.")); |
c906108c SS |
11772 | } |
11773 | ||
11774 | #endif /* 0 */ | |
11775 | ||
a068643d | 11776 | /* Convert a thread ID to a string. */ |
f3fb8c85 | 11777 | |
a068643d | 11778 | std::string |
f6ac5f3d | 11779 | remote_target::pid_to_str (ptid_t ptid) |
f3fb8c85 | 11780 | { |
82f73884 | 11781 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11782 | |
d7e15655 | 11783 | if (ptid == null_ptid) |
7cee1e54 | 11784 | return normal_pid_to_str (ptid); |
0e998d96 | 11785 | else if (ptid.is_pid ()) |
ecd0ada5 PA |
11786 | { |
11787 | /* Printing an inferior target id. */ | |
11788 | ||
11789 | /* When multi-process extensions are off, there's no way in the | |
11790 | remote protocol to know the remote process id, if there's any | |
11791 | at all. There's one exception --- when we're connected with | |
11792 | target extended-remote, and we manually attached to a process | |
11793 | with "attach PID". We don't record anywhere a flag that | |
11794 | allows us to distinguish that case from the case of | |
11795 | connecting with extended-remote and the stub already being | |
11796 | attached to a process, and reporting yes to qAttached, hence | |
11797 | no smart special casing here. */ | |
11798 | if (!remote_multi_process_p (rs)) | |
a068643d | 11799 | return "Remote target"; |
ecd0ada5 PA |
11800 | |
11801 | return normal_pid_to_str (ptid); | |
82f73884 | 11802 | } |
ecd0ada5 | 11803 | else |
79d7f229 | 11804 | { |
d7e15655 | 11805 | if (magic_null_ptid == ptid) |
a068643d | 11806 | return "Thread <main>"; |
8020350c | 11807 | else if (remote_multi_process_p (rs)) |
e38504b3 | 11808 | if (ptid.lwp () == 0) |
de0d863e DB |
11809 | return normal_pid_to_str (ptid); |
11810 | else | |
a068643d TT |
11811 | return string_printf ("Thread %d.%ld", |
11812 | ptid.pid (), ptid.lwp ()); | |
ecd0ada5 | 11813 | else |
a068643d | 11814 | return string_printf ("Thread %ld", ptid.lwp ()); |
79d7f229 | 11815 | } |
f3fb8c85 MS |
11816 | } |
11817 | ||
38691318 KB |
11818 | /* Get the address of the thread local variable in OBJFILE which is |
11819 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11820 | ||
f6ac5f3d PA |
11821 | CORE_ADDR |
11822 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11823 | CORE_ADDR offset) | |
38691318 | 11824 | { |
4082afcc | 11825 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11826 | { |
11827 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11828 | char *p = rs->buf.data (); |
11829 | char *endp = p + get_remote_packet_size (); | |
571dd617 | 11830 | enum packet_result result; |
38691318 KB |
11831 | |
11832 | strcpy (p, "qGetTLSAddr:"); | |
11833 | p += strlen (p); | |
82f73884 | 11834 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11835 | *p++ = ','; |
11836 | p += hexnumstr (p, offset); | |
11837 | *p++ = ','; | |
11838 | p += hexnumstr (p, lm); | |
11839 | *p++ = '\0'; | |
11840 | ||
6d820c5c | 11841 | putpkt (rs->buf); |
8d64371b | 11842 | getpkt (&rs->buf, 0); |
3e43a32a MS |
11843 | result = packet_ok (rs->buf, |
11844 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11845 | if (result == PACKET_OK) |
38691318 | 11846 | { |
b926417a | 11847 | ULONGEST addr; |
38691318 | 11848 | |
8d64371b | 11849 | unpack_varlen_hex (rs->buf.data (), &addr); |
b926417a | 11850 | return addr; |
38691318 | 11851 | } |
571dd617 | 11852 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11853 | throw_error (TLS_GENERIC_ERROR, |
11854 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11855 | else |
109c3e39 AC |
11856 | throw_error (TLS_GENERIC_ERROR, |
11857 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11858 | } |
11859 | else | |
109c3e39 AC |
11860 | throw_error (TLS_GENERIC_ERROR, |
11861 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11862 | /* Not reached. */ |
11863 | return 0; | |
11864 | } | |
11865 | ||
711e434b PM |
11866 | /* Provide thread local base, i.e. Thread Information Block address. |
11867 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11868 | ||
57810aa7 | 11869 | bool |
f6ac5f3d | 11870 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11871 | { |
4082afcc | 11872 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11873 | { |
11874 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11875 | char *p = rs->buf.data (); |
11876 | char *endp = p + get_remote_packet_size (); | |
711e434b PM |
11877 | enum packet_result result; |
11878 | ||
11879 | strcpy (p, "qGetTIBAddr:"); | |
11880 | p += strlen (p); | |
11881 | p = write_ptid (p, endp, ptid); | |
11882 | *p++ = '\0'; | |
11883 | ||
11884 | putpkt (rs->buf); | |
8d64371b | 11885 | getpkt (&rs->buf, 0); |
711e434b PM |
11886 | result = packet_ok (rs->buf, |
11887 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11888 | if (result == PACKET_OK) | |
11889 | { | |
b926417a | 11890 | ULONGEST val; |
8d64371b | 11891 | unpack_varlen_hex (rs->buf.data (), &val); |
711e434b | 11892 | if (addr) |
b926417a | 11893 | *addr = (CORE_ADDR) val; |
57810aa7 | 11894 | return true; |
711e434b PM |
11895 | } |
11896 | else if (result == PACKET_UNKNOWN) | |
11897 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11898 | else | |
11899 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11900 | } | |
11901 | else | |
11902 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11903 | /* Not reached. */ | |
57810aa7 | 11904 | return false; |
711e434b PM |
11905 | } |
11906 | ||
29709017 DJ |
11907 | /* Support for inferring a target description based on the current |
11908 | architecture and the size of a 'g' packet. While the 'g' packet | |
11909 | can have any size (since optional registers can be left off the | |
11910 | end), some sizes are easily recognizable given knowledge of the | |
11911 | approximate architecture. */ | |
11912 | ||
11913 | struct remote_g_packet_guess | |
11914 | { | |
eefce37f TT |
11915 | remote_g_packet_guess (int bytes_, const struct target_desc *tdesc_) |
11916 | : bytes (bytes_), | |
11917 | tdesc (tdesc_) | |
11918 | { | |
11919 | } | |
11920 | ||
29709017 DJ |
11921 | int bytes; |
11922 | const struct target_desc *tdesc; | |
11923 | }; | |
29709017 | 11924 | |
eefce37f | 11925 | struct remote_g_packet_data : public allocate_on_obstack |
29709017 | 11926 | { |
eefce37f | 11927 | std::vector<remote_g_packet_guess> guesses; |
29709017 DJ |
11928 | }; |
11929 | ||
11930 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11931 | ||
11932 | static void * | |
11933 | remote_g_packet_data_init (struct obstack *obstack) | |
11934 | { | |
eefce37f | 11935 | return new (obstack) remote_g_packet_data; |
29709017 DJ |
11936 | } |
11937 | ||
11938 | void | |
11939 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11940 | const struct target_desc *tdesc) | |
11941 | { | |
11942 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11943 | = ((struct remote_g_packet_data *) |
11944 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11945 | |
11946 | gdb_assert (tdesc != NULL); | |
11947 | ||
eefce37f TT |
11948 | for (const remote_g_packet_guess &guess : data->guesses) |
11949 | if (guess.bytes == bytes) | |
29709017 | 11950 | internal_error (__FILE__, __LINE__, |
9b20d036 | 11951 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11952 | bytes); |
11953 | ||
eefce37f | 11954 | data->guesses.emplace_back (bytes, tdesc); |
29709017 DJ |
11955 | } |
11956 | ||
eefce37f TT |
11957 | /* Return true if remote_read_description would do anything on this target |
11958 | and architecture, false otherwise. */ | |
d962ef82 | 11959 | |
eefce37f | 11960 | static bool |
d962ef82 DJ |
11961 | remote_read_description_p (struct target_ops *target) |
11962 | { | |
11963 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11964 | = ((struct remote_g_packet_data *) |
11965 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 | 11966 | |
eefce37f | 11967 | return !data->guesses.empty (); |
d962ef82 DJ |
11968 | } |
11969 | ||
f6ac5f3d PA |
11970 | const struct target_desc * |
11971 | remote_target::read_description () | |
29709017 DJ |
11972 | { |
11973 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11974 | = ((struct remote_g_packet_data *) |
11975 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11976 | |
d962ef82 DJ |
11977 | /* Do not try this during initial connection, when we do not know |
11978 | whether there is a running but stopped thread. */ | |
55f6301a | 11979 | if (!target_has_execution () || inferior_ptid == null_ptid) |
b6a8c27b | 11980 | return beneath ()->read_description (); |
d962ef82 | 11981 | |
eefce37f | 11982 | if (!data->guesses.empty ()) |
29709017 | 11983 | { |
29709017 DJ |
11984 | int bytes = send_g_packet (); |
11985 | ||
eefce37f TT |
11986 | for (const remote_g_packet_guess &guess : data->guesses) |
11987 | if (guess.bytes == bytes) | |
11988 | return guess.tdesc; | |
29709017 DJ |
11989 | |
11990 | /* We discard the g packet. A minor optimization would be to | |
11991 | hold on to it, and fill the register cache once we have selected | |
11992 | an architecture, but it's too tricky to do safely. */ | |
11993 | } | |
11994 | ||
b6a8c27b | 11995 | return beneath ()->read_description (); |
29709017 DJ |
11996 | } |
11997 | ||
a6b151f1 DJ |
11998 | /* Remote file transfer support. This is host-initiated I/O, not |
11999 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
12000 | ||
12001 | /* If *LEFT is at least the length of STRING, copy STRING to | |
12002 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12003 | decrease *LEFT. Otherwise raise an error. */ | |
12004 | ||
12005 | static void | |
a121b7c1 | 12006 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
12007 | { |
12008 | int len = strlen (string); | |
12009 | ||
12010 | if (len > *left) | |
12011 | error (_("Packet too long for target.")); | |
12012 | ||
12013 | memcpy (*buffer, string, len); | |
12014 | *buffer += len; | |
12015 | *left -= len; | |
12016 | ||
12017 | /* NUL-terminate the buffer as a convenience, if there is | |
12018 | room. */ | |
12019 | if (*left) | |
12020 | **buffer = '\0'; | |
12021 | } | |
12022 | ||
12023 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
12024 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12025 | decrease *LEFT. Otherwise raise an error. */ | |
12026 | ||
12027 | static void | |
12028 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
12029 | int len) | |
12030 | { | |
12031 | if (2 * len > *left) | |
12032 | error (_("Packet too long for target.")); | |
12033 | ||
12034 | bin2hex (bytes, *buffer, len); | |
12035 | *buffer += 2 * len; | |
12036 | *left -= 2 * len; | |
12037 | ||
12038 | /* NUL-terminate the buffer as a convenience, if there is | |
12039 | room. */ | |
12040 | if (*left) | |
12041 | **buffer = '\0'; | |
12042 | } | |
12043 | ||
12044 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
12045 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12046 | decrease *LEFT. Otherwise raise an error. */ | |
12047 | ||
12048 | static void | |
12049 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
12050 | { | |
12051 | int len = hexnumlen (value); | |
12052 | ||
12053 | if (len > *left) | |
12054 | error (_("Packet too long for target.")); | |
12055 | ||
12056 | hexnumstr (*buffer, value); | |
12057 | *buffer += len; | |
12058 | *left -= len; | |
12059 | ||
12060 | /* NUL-terminate the buffer as a convenience, if there is | |
12061 | room. */ | |
12062 | if (*left) | |
12063 | **buffer = '\0'; | |
12064 | } | |
12065 | ||
12066 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
12067 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
12068 | was included, and *ATTACHMENT to point to the start of the annex | |
12069 | if any. The length of the packet isn't needed here; there may | |
12070 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
12071 | ||
12072 | Return 0 if the packet could be parsed, -1 if it could not. If | |
12073 | -1 is returned, the other variables may not be initialized. */ | |
12074 | ||
12075 | static int | |
aa2838cc SM |
12076 | remote_hostio_parse_result (const char *buffer, int *retcode, |
12077 | int *remote_errno, const char **attachment) | |
a6b151f1 DJ |
12078 | { |
12079 | char *p, *p2; | |
12080 | ||
12081 | *remote_errno = 0; | |
12082 | *attachment = NULL; | |
12083 | ||
12084 | if (buffer[0] != 'F') | |
12085 | return -1; | |
12086 | ||
12087 | errno = 0; | |
12088 | *retcode = strtol (&buffer[1], &p, 16); | |
12089 | if (errno != 0 || p == &buffer[1]) | |
12090 | return -1; | |
12091 | ||
12092 | /* Check for ",errno". */ | |
12093 | if (*p == ',') | |
12094 | { | |
12095 | errno = 0; | |
12096 | *remote_errno = strtol (p + 1, &p2, 16); | |
12097 | if (errno != 0 || p + 1 == p2) | |
12098 | return -1; | |
12099 | p = p2; | |
12100 | } | |
12101 | ||
12102 | /* Check for ";attachment". If there is no attachment, the | |
12103 | packet should end here. */ | |
12104 | if (*p == ';') | |
12105 | { | |
12106 | *attachment = p + 1; | |
12107 | return 0; | |
12108 | } | |
12109 | else if (*p == '\0') | |
12110 | return 0; | |
12111 | else | |
12112 | return -1; | |
12113 | } | |
12114 | ||
12115 | /* Send a prepared I/O packet to the target and read its response. | |
12116 | The prepared packet is in the global RS->BUF before this function | |
12117 | is called, and the answer is there when we return. | |
12118 | ||
12119 | COMMAND_BYTES is the length of the request to send, which may include | |
12120 | binary data. WHICH_PACKET is the packet configuration to check | |
12121 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
12122 | is set to the error number and -1 is returned. Otherwise the value | |
12123 | returned by the function is returned. | |
12124 | ||
12125 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
12126 | attachment is expected; an error will be reported if there's a | |
12127 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
12128 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
12129 | attachment's length. */ | |
12130 | ||
6b8edb51 PA |
12131 | int |
12132 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
aa2838cc | 12133 | int *remote_errno, const char **attachment, |
6b8edb51 | 12134 | int *attachment_len) |
a6b151f1 DJ |
12135 | { |
12136 | struct remote_state *rs = get_remote_state (); | |
12137 | int ret, bytes_read; | |
aa2838cc | 12138 | const char *attachment_tmp; |
a6b151f1 | 12139 | |
20db9c52 | 12140 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
12141 | { |
12142 | *remote_errno = FILEIO_ENOSYS; | |
12143 | return -1; | |
12144 | } | |
12145 | ||
8d64371b TT |
12146 | putpkt_binary (rs->buf.data (), command_bytes); |
12147 | bytes_read = getpkt_sane (&rs->buf, 0); | |
a6b151f1 DJ |
12148 | |
12149 | /* If it timed out, something is wrong. Don't try to parse the | |
12150 | buffer. */ | |
12151 | if (bytes_read < 0) | |
12152 | { | |
12153 | *remote_errno = FILEIO_EINVAL; | |
12154 | return -1; | |
12155 | } | |
12156 | ||
12157 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
12158 | { | |
12159 | case PACKET_ERROR: | |
12160 | *remote_errno = FILEIO_EINVAL; | |
12161 | return -1; | |
12162 | case PACKET_UNKNOWN: | |
12163 | *remote_errno = FILEIO_ENOSYS; | |
12164 | return -1; | |
12165 | case PACKET_OK: | |
12166 | break; | |
12167 | } | |
12168 | ||
8d64371b | 12169 | if (remote_hostio_parse_result (rs->buf.data (), &ret, remote_errno, |
a6b151f1 DJ |
12170 | &attachment_tmp)) |
12171 | { | |
12172 | *remote_errno = FILEIO_EINVAL; | |
12173 | return -1; | |
12174 | } | |
12175 | ||
12176 | /* Make sure we saw an attachment if and only if we expected one. */ | |
12177 | if ((attachment_tmp == NULL && attachment != NULL) | |
12178 | || (attachment_tmp != NULL && attachment == NULL)) | |
12179 | { | |
12180 | *remote_errno = FILEIO_EINVAL; | |
12181 | return -1; | |
12182 | } | |
12183 | ||
12184 | /* If an attachment was found, it must point into the packet buffer; | |
12185 | work out how many bytes there were. */ | |
12186 | if (attachment_tmp != NULL) | |
12187 | { | |
12188 | *attachment = attachment_tmp; | |
8d64371b | 12189 | *attachment_len = bytes_read - (*attachment - rs->buf.data ()); |
a6b151f1 DJ |
12190 | } |
12191 | ||
12192 | return ret; | |
12193 | } | |
12194 | ||
dd194f6b | 12195 | /* See declaration.h. */ |
80152258 | 12196 | |
dd194f6b PA |
12197 | void |
12198 | readahead_cache::invalidate () | |
80152258 | 12199 | { |
dd194f6b | 12200 | this->fd = -1; |
80152258 PA |
12201 | } |
12202 | ||
dd194f6b | 12203 | /* See declaration.h. */ |
80152258 | 12204 | |
dd194f6b PA |
12205 | void |
12206 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 12207 | { |
dd194f6b PA |
12208 | if (this->fd == fd) |
12209 | this->fd = -1; | |
80152258 PA |
12210 | } |
12211 | ||
15a201c8 GB |
12212 | /* Set the filesystem remote_hostio functions that take FILENAME |
12213 | arguments will use. Return 0 on success, or -1 if an error | |
12214 | occurs (and set *REMOTE_ERRNO). */ | |
12215 | ||
6b8edb51 PA |
12216 | int |
12217 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
12218 | int *remote_errno) | |
15a201c8 GB |
12219 | { |
12220 | struct remote_state *rs = get_remote_state (); | |
12221 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
8d64371b | 12222 | char *p = rs->buf.data (); |
15a201c8 GB |
12223 | int left = get_remote_packet_size () - 1; |
12224 | char arg[9]; | |
12225 | int ret; | |
12226 | ||
12227 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
12228 | return 0; | |
12229 | ||
12230 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
12231 | return 0; | |
12232 | ||
12233 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
12234 | ||
12235 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
12236 | remote_buffer_add_string (&p, &left, arg); | |
12237 | ||
8d64371b | 12238 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_setfs, |
15a201c8 GB |
12239 | remote_errno, NULL, NULL); |
12240 | ||
12241 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
12242 | return 0; | |
12243 | ||
12244 | if (ret == 0) | |
12245 | rs->fs_pid = required_pid; | |
12246 | ||
12247 | return ret; | |
12248 | } | |
12249 | ||
12e2a5fd | 12250 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 12251 | |
6b8edb51 PA |
12252 | int |
12253 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
12254 | int flags, int mode, int warn_if_slow, | |
12255 | int *remote_errno) | |
a6b151f1 DJ |
12256 | { |
12257 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12258 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12259 | int left = get_remote_packet_size () - 1; |
12260 | ||
4313b8c0 GB |
12261 | if (warn_if_slow) |
12262 | { | |
12263 | static int warning_issued = 0; | |
12264 | ||
12265 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
12266 | filename); | |
12267 | ||
12268 | if (!warning_issued) | |
12269 | { | |
12270 | warning (_("File transfers from remote targets can be slow." | |
12271 | " Use \"set sysroot\" to access files locally" | |
12272 | " instead.")); | |
12273 | warning_issued = 1; | |
12274 | } | |
12275 | } | |
12276 | ||
15a201c8 GB |
12277 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12278 | return -1; | |
12279 | ||
a6b151f1 DJ |
12280 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
12281 | ||
12282 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12283 | strlen (filename)); | |
12284 | remote_buffer_add_string (&p, &left, ","); | |
12285 | ||
12286 | remote_buffer_add_int (&p, &left, flags); | |
12287 | remote_buffer_add_string (&p, &left, ","); | |
12288 | ||
12289 | remote_buffer_add_int (&p, &left, mode); | |
12290 | ||
8d64371b | 12291 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_open, |
a6b151f1 DJ |
12292 | remote_errno, NULL, NULL); |
12293 | } | |
12294 | ||
f6ac5f3d PA |
12295 | int |
12296 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
12297 | int flags, int mode, int warn_if_slow, | |
12298 | int *remote_errno) | |
12299 | { | |
6b8edb51 | 12300 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
12301 | remote_errno); |
12302 | } | |
12303 | ||
12e2a5fd | 12304 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 12305 | |
6b8edb51 PA |
12306 | int |
12307 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12308 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12309 | { |
12310 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12311 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12312 | int left = get_remote_packet_size (); |
12313 | int out_len; | |
12314 | ||
dd194f6b | 12315 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12316 | |
a6b151f1 DJ |
12317 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
12318 | ||
12319 | remote_buffer_add_int (&p, &left, fd); | |
12320 | remote_buffer_add_string (&p, &left, ","); | |
12321 | ||
12322 | remote_buffer_add_int (&p, &left, offset); | |
12323 | remote_buffer_add_string (&p, &left, ","); | |
12324 | ||
124e13d9 | 12325 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
8d64371b TT |
12326 | (get_remote_packet_size () |
12327 | - (p - rs->buf.data ()))); | |
a6b151f1 | 12328 | |
8d64371b | 12329 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pwrite, |
a6b151f1 DJ |
12330 | remote_errno, NULL, NULL); |
12331 | } | |
12332 | ||
f6ac5f3d PA |
12333 | int |
12334 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12335 | ULONGEST offset, int *remote_errno) | |
12336 | { | |
6b8edb51 | 12337 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12338 | } |
12339 | ||
80152258 PA |
12340 | /* Helper for the implementation of to_fileio_pread. Read the file |
12341 | from the remote side with vFile:pread. */ | |
a6b151f1 | 12342 | |
6b8edb51 PA |
12343 | int |
12344 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
12345 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12346 | { |
12347 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12348 | char *p = rs->buf.data (); |
aa2838cc | 12349 | const char *attachment; |
a6b151f1 DJ |
12350 | int left = get_remote_packet_size (); |
12351 | int ret, attachment_len; | |
12352 | int read_len; | |
12353 | ||
12354 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
12355 | ||
12356 | remote_buffer_add_int (&p, &left, fd); | |
12357 | remote_buffer_add_string (&p, &left, ","); | |
12358 | ||
12359 | remote_buffer_add_int (&p, &left, len); | |
12360 | remote_buffer_add_string (&p, &left, ","); | |
12361 | ||
12362 | remote_buffer_add_int (&p, &left, offset); | |
12363 | ||
8d64371b | 12364 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pread, |
a6b151f1 DJ |
12365 | remote_errno, &attachment, |
12366 | &attachment_len); | |
12367 | ||
12368 | if (ret < 0) | |
12369 | return ret; | |
12370 | ||
bc20a4af | 12371 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
12372 | read_buf, len); |
12373 | if (read_len != ret) | |
12374 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
12375 | ||
12376 | return ret; | |
12377 | } | |
12378 | ||
dd194f6b | 12379 | /* See declaration.h. */ |
80152258 | 12380 | |
dd194f6b PA |
12381 | int |
12382 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
12383 | ULONGEST offset) | |
80152258 | 12384 | { |
dd194f6b PA |
12385 | if (this->fd == fd |
12386 | && this->offset <= offset | |
12387 | && offset < this->offset + this->bufsize) | |
80152258 | 12388 | { |
dd194f6b | 12389 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
12390 | |
12391 | if (offset + len > max) | |
12392 | len = max - offset; | |
12393 | ||
dd194f6b | 12394 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
12395 | return len; |
12396 | } | |
12397 | ||
12398 | return 0; | |
12399 | } | |
12400 | ||
12401 | /* Implementation of to_fileio_pread. */ | |
12402 | ||
6b8edb51 PA |
12403 | int |
12404 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
12405 | ULONGEST offset, int *remote_errno) | |
80152258 PA |
12406 | { |
12407 | int ret; | |
12408 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12409 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12410 | |
dd194f6b | 12411 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12412 | if (ret > 0) |
12413 | { | |
12414 | cache->hit_count++; | |
12415 | ||
2189c312 SM |
12416 | remote_debug_printf ("readahead cache hit %s", |
12417 | pulongest (cache->hit_count)); | |
80152258 PA |
12418 | return ret; |
12419 | } | |
12420 | ||
12421 | cache->miss_count++; | |
2189c312 SM |
12422 | |
12423 | remote_debug_printf ("readahead cache miss %s", | |
12424 | pulongest (cache->miss_count)); | |
80152258 PA |
12425 | |
12426 | cache->fd = fd; | |
12427 | cache->offset = offset; | |
12428 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 12429 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 | 12430 | |
6b8edb51 | 12431 | ret = remote_hostio_pread_vFile (cache->fd, cache->buf, cache->bufsize, |
80152258 PA |
12432 | cache->offset, remote_errno); |
12433 | if (ret <= 0) | |
12434 | { | |
dd194f6b | 12435 | cache->invalidate_fd (fd); |
80152258 PA |
12436 | return ret; |
12437 | } | |
12438 | ||
12439 | cache->bufsize = ret; | |
dd194f6b | 12440 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12441 | } |
12442 | ||
f6ac5f3d PA |
12443 | int |
12444 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
12445 | ULONGEST offset, int *remote_errno) | |
12446 | { | |
6b8edb51 | 12447 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12448 | } |
12449 | ||
12e2a5fd | 12450 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12451 | |
6b8edb51 PA |
12452 | int |
12453 | remote_target::remote_hostio_close (int fd, int *remote_errno) | |
a6b151f1 DJ |
12454 | { |
12455 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12456 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12457 | int left = get_remote_packet_size () - 1; |
12458 | ||
dd194f6b | 12459 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12460 | |
a6b151f1 DJ |
12461 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12462 | ||
12463 | remote_buffer_add_int (&p, &left, fd); | |
12464 | ||
8d64371b | 12465 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_close, |
a6b151f1 DJ |
12466 | remote_errno, NULL, NULL); |
12467 | } | |
12468 | ||
f6ac5f3d PA |
12469 | int |
12470 | remote_target::fileio_close (int fd, int *remote_errno) | |
12471 | { | |
6b8edb51 | 12472 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12473 | } |
12474 | ||
12e2a5fd | 12475 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12476 | |
6b8edb51 PA |
12477 | int |
12478 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
12479 | int *remote_errno) | |
a6b151f1 DJ |
12480 | { |
12481 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12482 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12483 | int left = get_remote_packet_size () - 1; |
12484 | ||
15a201c8 GB |
12485 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12486 | return -1; | |
12487 | ||
a6b151f1 DJ |
12488 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12489 | ||
12490 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12491 | strlen (filename)); | |
12492 | ||
8d64371b | 12493 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_unlink, |
a6b151f1 DJ |
12494 | remote_errno, NULL, NULL); |
12495 | } | |
12496 | ||
f6ac5f3d PA |
12497 | int |
12498 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
12499 | int *remote_errno) | |
12500 | { | |
6b8edb51 | 12501 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12502 | } |
12503 | ||
12e2a5fd | 12504 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12505 | |
f6ac5f3d PA |
12506 | gdb::optional<std::string> |
12507 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
12508 | int *remote_errno) | |
b9e7b9c3 UW |
12509 | { |
12510 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12511 | char *p = rs->buf.data (); |
aa2838cc | 12512 | const char *attachment; |
b9e7b9c3 UW |
12513 | int left = get_remote_packet_size (); |
12514 | int len, attachment_len; | |
12515 | int read_len; | |
b9e7b9c3 | 12516 | |
15a201c8 | 12517 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12518 | return {}; |
15a201c8 | 12519 | |
b9e7b9c3 UW |
12520 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12521 | ||
12522 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12523 | strlen (filename)); | |
12524 | ||
8d64371b | 12525 | len = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_readlink, |
b9e7b9c3 UW |
12526 | remote_errno, &attachment, |
12527 | &attachment_len); | |
12528 | ||
12529 | if (len < 0) | |
e0d3522b | 12530 | return {}; |
b9e7b9c3 | 12531 | |
e0d3522b | 12532 | std::string ret (len, '\0'); |
b9e7b9c3 | 12533 | |
bc20a4af | 12534 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12535 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12536 | if (read_len != len) |
12537 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12538 | ||
b9e7b9c3 UW |
12539 | return ret; |
12540 | } | |
12541 | ||
12e2a5fd | 12542 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12543 | |
f6ac5f3d PA |
12544 | int |
12545 | remote_target::fileio_fstat (int fd, struct stat *st, int *remote_errno) | |
0a93529c GB |
12546 | { |
12547 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12548 | char *p = rs->buf.data (); |
0a93529c GB |
12549 | int left = get_remote_packet_size (); |
12550 | int attachment_len, ret; | |
aa2838cc | 12551 | const char *attachment; |
0a93529c GB |
12552 | struct fio_stat fst; |
12553 | int read_len; | |
12554 | ||
464b0089 GB |
12555 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12556 | ||
12557 | remote_buffer_add_int (&p, &left, fd); | |
12558 | ||
8d64371b | 12559 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_fstat, |
464b0089 GB |
12560 | remote_errno, &attachment, |
12561 | &attachment_len); | |
12562 | if (ret < 0) | |
0a93529c | 12563 | { |
464b0089 GB |
12564 | if (*remote_errno != FILEIO_ENOSYS) |
12565 | return ret; | |
12566 | ||
0a93529c GB |
12567 | /* Strictly we should return -1, ENOSYS here, but when |
12568 | "set sysroot remote:" was implemented in August 2008 | |
12569 | BFD's need for a stat function was sidestepped with | |
12570 | this hack. This was not remedied until March 2015 | |
12571 | so we retain the previous behavior to avoid breaking | |
12572 | compatibility. | |
12573 | ||
12574 | Note that the memset is a March 2015 addition; older | |
12575 | GDBs set st_size *and nothing else* so the structure | |
12576 | would have garbage in all other fields. This might | |
12577 | break something but retaining the previous behavior | |
12578 | here would be just too wrong. */ | |
12579 | ||
12580 | memset (st, 0, sizeof (struct stat)); | |
12581 | st->st_size = INT_MAX; | |
12582 | return 0; | |
12583 | } | |
12584 | ||
0a93529c GB |
12585 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12586 | (gdb_byte *) &fst, sizeof (fst)); | |
12587 | ||
12588 | if (read_len != ret) | |
12589 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12590 | ||
12591 | if (read_len != sizeof (fst)) | |
12592 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12593 | read_len, (int) sizeof (fst)); | |
12594 | ||
12595 | remote_fileio_to_host_stat (&fst, st); | |
12596 | ||
12597 | return 0; | |
12598 | } | |
12599 | ||
12e2a5fd | 12600 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12601 | |
57810aa7 | 12602 | bool |
f6ac5f3d | 12603 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12604 | { |
12605 | /* Valgrind GDB presents itself as a remote target but works | |
12606 | on the local filesystem: it does not implement remote get | |
12607 | and users are not expected to set a sysroot. To handle | |
12608 | this case we treat the remote filesystem as local if the | |
12609 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12610 | does not support vFile:open. */ | |
a3be80c3 | 12611 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
12612 | { |
12613 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12614 | ||
12615 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12616 | { | |
12617 | int fd, remote_errno; | |
12618 | ||
12619 | /* Try opening a file to probe support. The supplied | |
12620 | filename is irrelevant, we only care about whether | |
12621 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12622 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12623 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12624 | &remote_errno); |
12625 | ||
12626 | if (fd >= 0) | |
6b8edb51 | 12627 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 GB |
12628 | |
12629 | ps = packet_support (PACKET_vFile_open); | |
12630 | } | |
12631 | ||
12632 | if (ps == PACKET_DISABLE) | |
12633 | { | |
12634 | static int warning_issued = 0; | |
12635 | ||
12636 | if (!warning_issued) | |
12637 | { | |
12638 | warning (_("remote target does not support file" | |
12639 | " transfer, attempting to access files" | |
12640 | " from local filesystem.")); | |
12641 | warning_issued = 1; | |
12642 | } | |
12643 | ||
57810aa7 | 12644 | return true; |
e3dd7556 GB |
12645 | } |
12646 | } | |
12647 | ||
57810aa7 | 12648 | return false; |
e3dd7556 GB |
12649 | } |
12650 | ||
a6b151f1 DJ |
12651 | static int |
12652 | remote_fileio_errno_to_host (int errnum) | |
12653 | { | |
12654 | switch (errnum) | |
12655 | { | |
12656 | case FILEIO_EPERM: | |
dda83cd7 | 12657 | return EPERM; |
a6b151f1 | 12658 | case FILEIO_ENOENT: |
dda83cd7 | 12659 | return ENOENT; |
a6b151f1 | 12660 | case FILEIO_EINTR: |
dda83cd7 | 12661 | return EINTR; |
a6b151f1 | 12662 | case FILEIO_EIO: |
dda83cd7 | 12663 | return EIO; |
a6b151f1 | 12664 | case FILEIO_EBADF: |
dda83cd7 | 12665 | return EBADF; |
a6b151f1 | 12666 | case FILEIO_EACCES: |
dda83cd7 | 12667 | return EACCES; |
a6b151f1 | 12668 | case FILEIO_EFAULT: |
dda83cd7 | 12669 | return EFAULT; |
a6b151f1 | 12670 | case FILEIO_EBUSY: |
dda83cd7 | 12671 | return EBUSY; |
a6b151f1 | 12672 | case FILEIO_EEXIST: |
dda83cd7 | 12673 | return EEXIST; |
a6b151f1 | 12674 | case FILEIO_ENODEV: |
dda83cd7 | 12675 | return ENODEV; |
a6b151f1 | 12676 | case FILEIO_ENOTDIR: |
dda83cd7 | 12677 | return ENOTDIR; |
a6b151f1 | 12678 | case FILEIO_EISDIR: |
dda83cd7 | 12679 | return EISDIR; |
a6b151f1 | 12680 | case FILEIO_EINVAL: |
dda83cd7 | 12681 | return EINVAL; |
a6b151f1 | 12682 | case FILEIO_ENFILE: |
dda83cd7 | 12683 | return ENFILE; |
a6b151f1 | 12684 | case FILEIO_EMFILE: |
dda83cd7 | 12685 | return EMFILE; |
a6b151f1 | 12686 | case FILEIO_EFBIG: |
dda83cd7 | 12687 | return EFBIG; |
a6b151f1 | 12688 | case FILEIO_ENOSPC: |
dda83cd7 | 12689 | return ENOSPC; |
a6b151f1 | 12690 | case FILEIO_ESPIPE: |
dda83cd7 | 12691 | return ESPIPE; |
a6b151f1 | 12692 | case FILEIO_EROFS: |
dda83cd7 | 12693 | return EROFS; |
a6b151f1 | 12694 | case FILEIO_ENOSYS: |
dda83cd7 | 12695 | return ENOSYS; |
a6b151f1 | 12696 | case FILEIO_ENAMETOOLONG: |
dda83cd7 | 12697 | return ENAMETOOLONG; |
a6b151f1 DJ |
12698 | } |
12699 | return -1; | |
12700 | } | |
12701 | ||
12702 | static char * | |
12703 | remote_hostio_error (int errnum) | |
12704 | { | |
12705 | int host_error = remote_fileio_errno_to_host (errnum); | |
12706 | ||
12707 | if (host_error == -1) | |
12708 | error (_("Unknown remote I/O error %d"), errnum); | |
12709 | else | |
12710 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12711 | } | |
12712 | ||
440b7aec PA |
12713 | /* A RAII wrapper around a remote file descriptor. */ |
12714 | ||
12715 | class scoped_remote_fd | |
a6b151f1 | 12716 | { |
440b7aec | 12717 | public: |
6b8edb51 PA |
12718 | scoped_remote_fd (remote_target *remote, int fd) |
12719 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12720 | { |
12721 | } | |
a6b151f1 | 12722 | |
440b7aec PA |
12723 | ~scoped_remote_fd () |
12724 | { | |
12725 | if (m_fd != -1) | |
12726 | { | |
12727 | try | |
12728 | { | |
12729 | int remote_errno; | |
6b8edb51 | 12730 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12731 | } |
12732 | catch (...) | |
12733 | { | |
12734 | /* Swallow exception before it escapes the dtor. If | |
12735 | something goes wrong, likely the connection is gone, | |
12736 | and there's nothing else that can be done. */ | |
12737 | } | |
12738 | } | |
12739 | } | |
12740 | ||
12741 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12742 | ||
12743 | /* Release ownership of the file descriptor, and return it. */ | |
88a774b9 | 12744 | ATTRIBUTE_UNUSED_RESULT int release () noexcept |
440b7aec PA |
12745 | { |
12746 | int fd = m_fd; | |
12747 | m_fd = -1; | |
12748 | return fd; | |
12749 | } | |
12750 | ||
12751 | /* Return the owned file descriptor. */ | |
12752 | int get () const noexcept | |
12753 | { | |
12754 | return m_fd; | |
12755 | } | |
12756 | ||
12757 | private: | |
6b8edb51 PA |
12758 | /* The remote target. */ |
12759 | remote_target *m_remote; | |
12760 | ||
440b7aec PA |
12761 | /* The owned remote I/O file descriptor. */ |
12762 | int m_fd; | |
12763 | }; | |
a6b151f1 DJ |
12764 | |
12765 | void | |
12766 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12767 | { |
12768 | remote_target *remote = get_current_remote_target (); | |
12769 | ||
12770 | if (remote == nullptr) | |
12771 | error (_("command can only be used with remote target")); | |
12772 | ||
12773 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12774 | } | |
12775 | ||
12776 | void | |
12777 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12778 | int from_tty) | |
a6b151f1 | 12779 | { |
440b7aec | 12780 | int retcode, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12781 | int bytes_in_buffer; |
12782 | int saw_eof; | |
12783 | ULONGEST offset; | |
a6b151f1 | 12784 | |
d419f42d | 12785 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12786 | if (file == NULL) |
12787 | perror_with_name (local_file); | |
a6b151f1 | 12788 | |
440b7aec | 12789 | scoped_remote_fd fd |
6b8edb51 PA |
12790 | (this, remote_hostio_open (NULL, |
12791 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12792 | | FILEIO_O_TRUNC), | |
12793 | 0700, 0, &remote_errno)); | |
440b7aec | 12794 | if (fd.get () == -1) |
a6b151f1 DJ |
12795 | remote_hostio_error (remote_errno); |
12796 | ||
12797 | /* Send up to this many bytes at once. They won't all fit in the | |
12798 | remote packet limit, so we'll transfer slightly fewer. */ | |
12799 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12800 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12801 | |
a6b151f1 DJ |
12802 | bytes_in_buffer = 0; |
12803 | saw_eof = 0; | |
12804 | offset = 0; | |
12805 | while (bytes_in_buffer || !saw_eof) | |
12806 | { | |
12807 | if (!saw_eof) | |
12808 | { | |
5ca3b260 | 12809 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12810 | io_size - bytes_in_buffer, |
d419f42d | 12811 | file.get ()); |
a6b151f1 DJ |
12812 | if (bytes == 0) |
12813 | { | |
d419f42d | 12814 | if (ferror (file.get ())) |
a6b151f1 DJ |
12815 | error (_("Error reading %s."), local_file); |
12816 | else | |
12817 | { | |
12818 | /* EOF. Unless there is something still in the | |
12819 | buffer from the last iteration, we are done. */ | |
12820 | saw_eof = 1; | |
12821 | if (bytes_in_buffer == 0) | |
12822 | break; | |
12823 | } | |
12824 | } | |
12825 | } | |
12826 | else | |
12827 | bytes = 0; | |
12828 | ||
12829 | bytes += bytes_in_buffer; | |
12830 | bytes_in_buffer = 0; | |
12831 | ||
5ca3b260 | 12832 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 12833 | offset, &remote_errno); |
a6b151f1 DJ |
12834 | |
12835 | if (retcode < 0) | |
12836 | remote_hostio_error (remote_errno); | |
12837 | else if (retcode == 0) | |
12838 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12839 | else if (retcode < bytes) | |
12840 | { | |
12841 | /* Short write. Save the rest of the read data for the next | |
12842 | write. */ | |
12843 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 12844 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
12845 | } |
12846 | ||
12847 | offset += retcode; | |
12848 | } | |
12849 | ||
6b8edb51 | 12850 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12851 | remote_hostio_error (remote_errno); |
12852 | ||
12853 | if (from_tty) | |
12854 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
a6b151f1 DJ |
12855 | } |
12856 | ||
12857 | void | |
12858 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
12859 | { |
12860 | remote_target *remote = get_current_remote_target (); | |
12861 | ||
12862 | if (remote == nullptr) | |
12863 | error (_("command can only be used with remote target")); | |
12864 | ||
12865 | remote->remote_file_get (remote_file, local_file, from_tty); | |
12866 | } | |
12867 | ||
12868 | void | |
12869 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
12870 | int from_tty) | |
a6b151f1 | 12871 | { |
440b7aec | 12872 | int remote_errno, bytes, io_size; |
a6b151f1 | 12873 | ULONGEST offset; |
a6b151f1 | 12874 | |
440b7aec | 12875 | scoped_remote_fd fd |
6b8edb51 PA |
12876 | (this, remote_hostio_open (NULL, |
12877 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12878 | &remote_errno)); | |
440b7aec | 12879 | if (fd.get () == -1) |
a6b151f1 DJ |
12880 | remote_hostio_error (remote_errno); |
12881 | ||
d419f42d | 12882 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12883 | if (file == NULL) |
12884 | perror_with_name (local_file); | |
a6b151f1 DJ |
12885 | |
12886 | /* Send up to this many bytes at once. They won't all fit in the | |
12887 | remote packet limit, so we'll transfer slightly fewer. */ | |
12888 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12889 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12890 | |
a6b151f1 DJ |
12891 | offset = 0; |
12892 | while (1) | |
12893 | { | |
5ca3b260 | 12894 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 12895 | &remote_errno); |
a6b151f1 DJ |
12896 | if (bytes == 0) |
12897 | /* Success, but no bytes, means end-of-file. */ | |
12898 | break; | |
12899 | if (bytes == -1) | |
12900 | remote_hostio_error (remote_errno); | |
12901 | ||
12902 | offset += bytes; | |
12903 | ||
5ca3b260 | 12904 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
12905 | if (bytes == 0) |
12906 | perror_with_name (local_file); | |
12907 | } | |
12908 | ||
6b8edb51 | 12909 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12910 | remote_hostio_error (remote_errno); |
12911 | ||
12912 | if (from_tty) | |
12913 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
a6b151f1 DJ |
12914 | } |
12915 | ||
12916 | void | |
12917 | remote_file_delete (const char *remote_file, int from_tty) | |
12918 | { | |
6b8edb51 | 12919 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 12920 | |
6b8edb51 | 12921 | if (remote == nullptr) |
a6b151f1 DJ |
12922 | error (_("command can only be used with remote target")); |
12923 | ||
6b8edb51 PA |
12924 | remote->remote_file_delete (remote_file, from_tty); |
12925 | } | |
12926 | ||
12927 | void | |
12928 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
12929 | { | |
12930 | int retcode, remote_errno; | |
12931 | ||
12932 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
12933 | if (retcode == -1) |
12934 | remote_hostio_error (remote_errno); | |
12935 | ||
12936 | if (from_tty) | |
12937 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12938 | } | |
12939 | ||
12940 | static void | |
ac88e2de | 12941 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12942 | { |
d1a41061 PP |
12943 | if (args == NULL) |
12944 | error_no_arg (_("file to put")); | |
12945 | ||
773a1edc | 12946 | gdb_argv argv (args); |
a6b151f1 DJ |
12947 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12948 | error (_("Invalid parameters to remote put")); | |
12949 | ||
12950 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12951 | } |
12952 | ||
12953 | static void | |
ac88e2de | 12954 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12955 | { |
d1a41061 PP |
12956 | if (args == NULL) |
12957 | error_no_arg (_("file to get")); | |
12958 | ||
773a1edc | 12959 | gdb_argv argv (args); |
a6b151f1 DJ |
12960 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12961 | error (_("Invalid parameters to remote get")); | |
12962 | ||
12963 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12964 | } |
12965 | ||
12966 | static void | |
ac88e2de | 12967 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12968 | { |
d1a41061 PP |
12969 | if (args == NULL) |
12970 | error_no_arg (_("file to delete")); | |
12971 | ||
773a1edc | 12972 | gdb_argv argv (args); |
a6b151f1 DJ |
12973 | if (argv[0] == NULL || argv[1] != NULL) |
12974 | error (_("Invalid parameters to remote delete")); | |
12975 | ||
12976 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12977 | } |
12978 | ||
57810aa7 | 12979 | bool |
f6ac5f3d | 12980 | remote_target::can_execute_reverse () |
b2175913 | 12981 | { |
4082afcc PA |
12982 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12983 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 12984 | return true; |
40ab02ce | 12985 | else |
57810aa7 | 12986 | return false; |
b2175913 MS |
12987 | } |
12988 | ||
57810aa7 | 12989 | bool |
f6ac5f3d | 12990 | remote_target::supports_non_stop () |
74531fed | 12991 | { |
57810aa7 | 12992 | return true; |
74531fed PA |
12993 | } |
12994 | ||
57810aa7 | 12995 | bool |
f6ac5f3d | 12996 | remote_target::supports_disable_randomization () |
03583c20 UW |
12997 | { |
12998 | /* Only supported in extended mode. */ | |
57810aa7 | 12999 | return false; |
03583c20 UW |
13000 | } |
13001 | ||
57810aa7 | 13002 | bool |
f6ac5f3d | 13003 | remote_target::supports_multi_process () |
8a305172 PA |
13004 | { |
13005 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 13006 | |
8020350c | 13007 | return remote_multi_process_p (rs); |
8a305172 PA |
13008 | } |
13009 | ||
70221824 | 13010 | static int |
f6ac5f3d | 13011 | remote_supports_cond_tracepoints () |
782b2b07 | 13012 | { |
4082afcc | 13013 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
13014 | } |
13015 | ||
57810aa7 | 13016 | bool |
f6ac5f3d | 13017 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 13018 | { |
4082afcc | 13019 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
13020 | } |
13021 | ||
70221824 | 13022 | static int |
f6ac5f3d | 13023 | remote_supports_fast_tracepoints () |
7a697b8d | 13024 | { |
4082afcc | 13025 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
13026 | } |
13027 | ||
0fb4aa4b | 13028 | static int |
f6ac5f3d | 13029 | remote_supports_static_tracepoints () |
0fb4aa4b | 13030 | { |
4082afcc | 13031 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
13032 | } |
13033 | ||
1e4d1764 | 13034 | static int |
f6ac5f3d | 13035 | remote_supports_install_in_trace () |
1e4d1764 | 13036 | { |
4082afcc | 13037 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
13038 | } |
13039 | ||
57810aa7 | 13040 | bool |
f6ac5f3d | 13041 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 13042 | { |
4082afcc PA |
13043 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
13044 | == PACKET_ENABLE); | |
d248b706 KY |
13045 | } |
13046 | ||
57810aa7 | 13047 | bool |
f6ac5f3d | 13048 | remote_target::supports_string_tracing () |
3065dfb6 | 13049 | { |
4082afcc | 13050 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
13051 | } |
13052 | ||
57810aa7 | 13053 | bool |
f6ac5f3d | 13054 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 13055 | { |
4082afcc | 13056 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
13057 | } |
13058 | ||
f6ac5f3d PA |
13059 | void |
13060 | remote_target::trace_init () | |
35b1e5cc | 13061 | { |
b6bb3468 PA |
13062 | struct remote_state *rs = get_remote_state (); |
13063 | ||
35b1e5cc | 13064 | putpkt ("QTinit"); |
b6bb3468 | 13065 | remote_get_noisy_reply (); |
8d64371b | 13066 | if (strcmp (rs->buf.data (), "OK") != 0) |
35b1e5cc SS |
13067 | error (_("Target does not support this command.")); |
13068 | } | |
13069 | ||
409873ef SS |
13070 | /* Recursive routine to walk through command list including loops, and |
13071 | download packets for each command. */ | |
13072 | ||
6b8edb51 PA |
13073 | void |
13074 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
13075 | struct command_line *cmds) | |
409873ef SS |
13076 | { |
13077 | struct remote_state *rs = get_remote_state (); | |
13078 | struct command_line *cmd; | |
13079 | ||
13080 | for (cmd = cmds; cmd; cmd = cmd->next) | |
13081 | { | |
0df8b418 | 13082 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 13083 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 13084 | encode_source_string (num, addr, "cmd", cmd->line, |
8d64371b TT |
13085 | rs->buf.data () + strlen (rs->buf.data ()), |
13086 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13087 | putpkt (rs->buf); |
b6bb3468 | 13088 | remote_get_noisy_reply (); |
8d64371b | 13089 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13090 | warning (_("Target does not support source download.")); |
13091 | ||
13092 | if (cmd->control_type == while_control | |
13093 | || cmd->control_type == while_stepping_control) | |
13094 | { | |
12973681 | 13095 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 13096 | |
0df8b418 | 13097 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 13098 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 13099 | encode_source_string (num, addr, "cmd", "end", |
8d64371b TT |
13100 | rs->buf.data () + strlen (rs->buf.data ()), |
13101 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13102 | putpkt (rs->buf); |
b6bb3468 | 13103 | remote_get_noisy_reply (); |
8d64371b | 13104 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13105 | warning (_("Target does not support source download.")); |
13106 | } | |
13107 | } | |
13108 | } | |
13109 | ||
f6ac5f3d PA |
13110 | void |
13111 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc SS |
13112 | { |
13113 | CORE_ADDR tpaddr; | |
409873ef | 13114 | char addrbuf[40]; |
b44ec619 SM |
13115 | std::vector<std::string> tdp_actions; |
13116 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 13117 | char *pkt; |
e8ba3115 | 13118 | struct breakpoint *b = loc->owner; |
d9b3f62e | 13119 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 13120 | struct remote_state *rs = get_remote_state (); |
3df3a985 | 13121 | int ret; |
ff36536c | 13122 | const char *err_msg = _("Tracepoint packet too large for target."); |
3df3a985 PFC |
13123 | size_t size_left; |
13124 | ||
13125 | /* We use a buffer other than rs->buf because we'll build strings | |
13126 | across multiple statements, and other statements in between could | |
13127 | modify rs->buf. */ | |
13128 | gdb::char_vector buf (get_remote_packet_size ()); | |
35b1e5cc | 13129 | |
dc673c81 | 13130 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
13131 | |
13132 | tpaddr = loc->address; | |
53807e9f | 13133 | strcpy (addrbuf, phex (tpaddr, sizeof (CORE_ADDR))); |
3df3a985 PFC |
13134 | ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x", |
13135 | b->number, addrbuf, /* address */ | |
13136 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
13137 | t->step_count, t->pass_count); | |
13138 | ||
13139 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13140 | error ("%s", err_msg); |
3df3a985 | 13141 | |
e8ba3115 YQ |
13142 | /* Fast tracepoints are mostly handled by the target, but we can |
13143 | tell the target how big of an instruction block should be moved | |
13144 | around. */ | |
13145 | if (b->type == bp_fast_tracepoint) | |
13146 | { | |
13147 | /* Only test for support at download time; we may not know | |
13148 | target capabilities at definition time. */ | |
13149 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 13150 | { |
6b940e6a PL |
13151 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
13152 | NULL)) | |
3df3a985 PFC |
13153 | { |
13154 | size_left = buf.size () - strlen (buf.data ()); | |
13155 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13156 | size_left, ":F%x", | |
13157 | gdb_insn_length (loc->gdbarch, tpaddr)); | |
13158 | ||
13159 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13160 | error ("%s", err_msg); |
3df3a985 | 13161 | } |
35b1e5cc | 13162 | else |
e8ba3115 YQ |
13163 | /* If it passed validation at definition but fails now, |
13164 | something is very wrong. */ | |
13165 | internal_error (__FILE__, __LINE__, | |
13166 | _("Fast tracepoint not " | |
13167 | "valid during download")); | |
35b1e5cc | 13168 | } |
e8ba3115 YQ |
13169 | else |
13170 | /* Fast tracepoints are functionally identical to regular | |
13171 | tracepoints, so don't take lack of support as a reason to | |
13172 | give up on the trace run. */ | |
13173 | warning (_("Target does not support fast tracepoints, " | |
13174 | "downloading %d as regular tracepoint"), b->number); | |
13175 | } | |
13176 | else if (b->type == bp_static_tracepoint) | |
13177 | { | |
13178 | /* Only test for support at download time; we may not know | |
13179 | target capabilities at definition time. */ | |
13180 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 13181 | { |
e8ba3115 | 13182 | struct static_tracepoint_marker marker; |
0fb4aa4b | 13183 | |
e8ba3115 | 13184 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
3df3a985 PFC |
13185 | { |
13186 | size_left = buf.size () - strlen (buf.data ()); | |
13187 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13188 | size_left, ":S"); | |
13189 | ||
13190 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13191 | error ("%s", err_msg); |
3df3a985 | 13192 | } |
0fb4aa4b | 13193 | else |
e8ba3115 | 13194 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 13195 | } |
e8ba3115 YQ |
13196 | else |
13197 | /* Fast tracepoints are functionally identical to regular | |
13198 | tracepoints, so don't take lack of support as a reason | |
13199 | to give up on the trace run. */ | |
13200 | error (_("Target does not support static tracepoints")); | |
13201 | } | |
13202 | /* If the tracepoint has a conditional, make it into an agent | |
13203 | expression and append to the definition. */ | |
13204 | if (loc->cond) | |
13205 | { | |
13206 | /* Only test support at download time, we may not know target | |
13207 | capabilities at definition time. */ | |
13208 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 13209 | { |
3df3a985 PFC |
13210 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, |
13211 | loc->cond.get ()); | |
13212 | ||
13213 | size_left = buf.size () - strlen (buf.data ()); | |
13214 | ||
13215 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13216 | size_left, ":X%x,", aexpr->len); | |
13217 | ||
13218 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13219 | error ("%s", err_msg); |
3df3a985 PFC |
13220 | |
13221 | size_left = buf.size () - strlen (buf.data ()); | |
13222 | ||
13223 | /* Two bytes to encode each aexpr byte, plus the terminating | |
13224 | null byte. */ | |
13225 | if (aexpr->len * 2 + 1 > size_left) | |
a7f25a84 | 13226 | error ("%s", err_msg); |
3df3a985 PFC |
13227 | |
13228 | pkt = buf.data () + strlen (buf.data ()); | |
13229 | ||
b44ec619 | 13230 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
13231 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
13232 | *pkt = '\0'; | |
35b1e5cc | 13233 | } |
e8ba3115 YQ |
13234 | else |
13235 | warning (_("Target does not support conditional tracepoints, " | |
13236 | "ignoring tp %d cond"), b->number); | |
13237 | } | |
35b1e5cc | 13238 | |
d9b3f62e | 13239 | if (b->commands || *default_collect) |
3df3a985 PFC |
13240 | { |
13241 | size_left = buf.size () - strlen (buf.data ()); | |
13242 | ||
13243 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13244 | size_left, "-"); | |
13245 | ||
13246 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13247 | error ("%s", err_msg); |
3df3a985 PFC |
13248 | } |
13249 | ||
13250 | putpkt (buf.data ()); | |
b6bb3468 | 13251 | remote_get_noisy_reply (); |
8d64371b | 13252 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13253 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 13254 | |
e8ba3115 | 13255 | /* do_single_steps (t); */ |
b44ec619 SM |
13256 | for (auto action_it = tdp_actions.begin (); |
13257 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 13258 | { |
b44ec619 SM |
13259 | QUIT; /* Allow user to bail out with ^C. */ |
13260 | ||
aa6f3694 | 13261 | bool has_more = ((action_it + 1) != tdp_actions.end () |
b44ec619 SM |
13262 | || !stepping_actions.empty ()); |
13263 | ||
3df3a985 PFC |
13264 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c", |
13265 | b->number, addrbuf, /* address */ | |
13266 | action_it->c_str (), | |
13267 | has_more ? '-' : 0); | |
13268 | ||
13269 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13270 | error ("%s", err_msg); |
3df3a985 PFC |
13271 | |
13272 | putpkt (buf.data ()); | |
b44ec619 | 13273 | remote_get_noisy_reply (); |
8d64371b | 13274 | if (strcmp (rs->buf.data (), "OK")) |
b44ec619 | 13275 | error (_("Error on target while setting tracepoints.")); |
e8ba3115 | 13276 | } |
409873ef | 13277 | |
05abfc39 PFC |
13278 | for (auto action_it = stepping_actions.begin (); |
13279 | action_it != stepping_actions.end (); action_it++) | |
13280 | { | |
13281 | QUIT; /* Allow user to bail out with ^C. */ | |
13282 | ||
13283 | bool is_first = action_it == stepping_actions.begin (); | |
aa6f3694 | 13284 | bool has_more = (action_it + 1) != stepping_actions.end (); |
05abfc39 | 13285 | |
3df3a985 PFC |
13286 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s", |
13287 | b->number, addrbuf, /* address */ | |
13288 | is_first ? "S" : "", | |
13289 | action_it->c_str (), | |
13290 | has_more ? "-" : ""); | |
13291 | ||
13292 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13293 | error ("%s", err_msg); |
3df3a985 PFC |
13294 | |
13295 | putpkt (buf.data ()); | |
05abfc39 | 13296 | remote_get_noisy_reply (); |
8d64371b | 13297 | if (strcmp (rs->buf.data (), "OK")) |
05abfc39 PFC |
13298 | error (_("Error on target while setting tracepoints.")); |
13299 | } | |
b44ec619 | 13300 | |
4082afcc | 13301 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 13302 | { |
f00aae0f | 13303 | if (b->location != NULL) |
409873ef | 13304 | { |
3df3a985 PFC |
13305 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13306 | ||
13307 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13308 | error ("%s", err_msg); |
3df3a985 | 13309 | |
f00aae0f | 13310 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 13311 | event_location_to_string (b->location.get ()), |
3df3a985 PFC |
13312 | buf.data () + strlen (buf.data ()), |
13313 | buf.size () - strlen (buf.data ())); | |
13314 | putpkt (buf.data ()); | |
b6bb3468 | 13315 | remote_get_noisy_reply (); |
8d64371b | 13316 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13317 | warning (_("Target does not support source download.")); |
409873ef | 13318 | } |
e8ba3115 YQ |
13319 | if (b->cond_string) |
13320 | { | |
3df3a985 PFC |
13321 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13322 | ||
13323 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13324 | error ("%s", err_msg); |
3df3a985 | 13325 | |
e8ba3115 | 13326 | encode_source_string (b->number, loc->address, |
3df3a985 PFC |
13327 | "cond", b->cond_string, |
13328 | buf.data () + strlen (buf.data ()), | |
13329 | buf.size () - strlen (buf.data ())); | |
13330 | putpkt (buf.data ()); | |
b6bb3468 | 13331 | remote_get_noisy_reply (); |
8d64371b | 13332 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 YQ |
13333 | warning (_("Target does not support source download.")); |
13334 | } | |
13335 | remote_download_command_source (b->number, loc->address, | |
13336 | breakpoint_commands (b)); | |
35b1e5cc | 13337 | } |
35b1e5cc SS |
13338 | } |
13339 | ||
57810aa7 | 13340 | bool |
f6ac5f3d | 13341 | remote_target::can_download_tracepoint () |
1e4d1764 | 13342 | { |
1e51243a PA |
13343 | struct remote_state *rs = get_remote_state (); |
13344 | struct trace_status *ts; | |
13345 | int status; | |
13346 | ||
13347 | /* Don't try to install tracepoints until we've relocated our | |
13348 | symbols, and fetched and merged the target's tracepoint list with | |
13349 | ours. */ | |
13350 | if (rs->starting_up) | |
57810aa7 | 13351 | return false; |
1e51243a PA |
13352 | |
13353 | ts = current_trace_status (); | |
f6ac5f3d | 13354 | status = get_trace_status (ts); |
1e4d1764 YQ |
13355 | |
13356 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 13357 | return false; |
1e4d1764 YQ |
13358 | |
13359 | /* If we are in a tracing experiment, but remote stub doesn't support | |
13360 | installing tracepoint in trace, we have to return. */ | |
13361 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 13362 | return false; |
1e4d1764 | 13363 | |
57810aa7 | 13364 | return true; |
1e4d1764 YQ |
13365 | } |
13366 | ||
13367 | ||
f6ac5f3d PA |
13368 | void |
13369 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
13370 | { |
13371 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 13372 | char *p; |
35b1e5cc | 13373 | |
8d64371b | 13374 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
13375 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
13376 | tsv.builtin); | |
8d64371b TT |
13377 | p = rs->buf.data () + strlen (rs->buf.data ()); |
13378 | if ((p - rs->buf.data ()) + tsv.name.length () * 2 | |
13379 | >= get_remote_packet_size ()) | |
00bf0b85 | 13380 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 13381 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 13382 | *p++ = '\0'; |
35b1e5cc | 13383 | putpkt (rs->buf); |
b6bb3468 | 13384 | remote_get_noisy_reply (); |
8d64371b | 13385 | if (rs->buf[0] == '\0') |
ad91cd99 | 13386 | error (_("Target does not support this command.")); |
8d64371b | 13387 | if (strcmp (rs->buf.data (), "OK") != 0) |
ad91cd99 | 13388 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13389 | } |
13390 | ||
f6ac5f3d PA |
13391 | void |
13392 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13393 | { |
13394 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13395 | |
8d64371b | 13396 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTEnable:%x:%s", |
53807e9f TT |
13397 | location->owner->number, |
13398 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13399 | putpkt (rs->buf); |
b6bb3468 | 13400 | remote_get_noisy_reply (); |
8d64371b | 13401 | if (rs->buf[0] == '\0') |
d248b706 | 13402 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13403 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13404 | error (_("Error on target while enabling tracepoint.")); |
13405 | } | |
13406 | ||
f6ac5f3d PA |
13407 | void |
13408 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13409 | { |
13410 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13411 | |
8d64371b | 13412 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDisable:%x:%s", |
53807e9f TT |
13413 | location->owner->number, |
13414 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13415 | putpkt (rs->buf); |
b6bb3468 | 13416 | remote_get_noisy_reply (); |
8d64371b | 13417 | if (rs->buf[0] == '\0') |
d248b706 | 13418 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13419 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13420 | error (_("Error on target while disabling tracepoint.")); |
13421 | } | |
13422 | ||
f6ac5f3d PA |
13423 | void |
13424 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13425 | { |
13426 | asection *s; | |
13427 | bfd_size_type size; | |
608bcef2 | 13428 | bfd_vma vma; |
35b1e5cc | 13429 | int anysecs = 0; |
c2fa21f1 | 13430 | int offset = 0; |
35b1e5cc | 13431 | |
7e10abd1 | 13432 | if (!current_program_space->exec_bfd ()) |
35b1e5cc SS |
13433 | return; /* No information to give. */ |
13434 | ||
b6bb3468 PA |
13435 | struct remote_state *rs = get_remote_state (); |
13436 | ||
8d64371b TT |
13437 | strcpy (rs->buf.data (), "QTro"); |
13438 | offset = strlen (rs->buf.data ()); | |
7e10abd1 | 13439 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
35b1e5cc SS |
13440 | { |
13441 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13442 | int sec_length; |
35b1e5cc SS |
13443 | |
13444 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 13445 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
13446 | (s->flags & SEC_READONLY) == 0) |
13447 | continue; | |
13448 | ||
13449 | anysecs = 1; | |
fd361982 AM |
13450 | vma = bfd_section_vma (s); |
13451 | size = bfd_section_size (s); | |
608bcef2 HZ |
13452 | sprintf_vma (tmp1, vma); |
13453 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 13454 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
8d64371b | 13455 | if (offset + sec_length + 1 > rs->buf.size ()) |
c2fa21f1 | 13456 | { |
4082afcc | 13457 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 13458 | warning (_("\ |
c2fa21f1 HZ |
13459 | Too many sections for read-only sections definition packet.")); |
13460 | break; | |
13461 | } | |
8d64371b | 13462 | xsnprintf (rs->buf.data () + offset, rs->buf.size () - offset, ":%s,%s", |
bba74b36 | 13463 | tmp1, tmp2); |
c2fa21f1 | 13464 | offset += sec_length; |
35b1e5cc SS |
13465 | } |
13466 | if (anysecs) | |
13467 | { | |
b6bb3468 | 13468 | putpkt (rs->buf); |
8d64371b | 13469 | getpkt (&rs->buf, 0); |
35b1e5cc SS |
13470 | } |
13471 | } | |
13472 | ||
f6ac5f3d PA |
13473 | void |
13474 | remote_target::trace_start () | |
35b1e5cc | 13475 | { |
b6bb3468 PA |
13476 | struct remote_state *rs = get_remote_state (); |
13477 | ||
35b1e5cc | 13478 | putpkt ("QTStart"); |
b6bb3468 | 13479 | remote_get_noisy_reply (); |
8d64371b | 13480 | if (rs->buf[0] == '\0') |
ad91cd99 | 13481 | error (_("Target does not support this command.")); |
8d64371b TT |
13482 | if (strcmp (rs->buf.data (), "OK") != 0) |
13483 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13484 | } |
13485 | ||
f6ac5f3d PA |
13486 | int |
13487 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13488 | { |
953b98d1 | 13489 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13490 | char *p = NULL; |
bd3eecc3 | 13491 | enum packet_result result; |
b6bb3468 | 13492 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13493 | |
4082afcc | 13494 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13495 | return -1; |
a744cf53 | 13496 | |
7b9a15e1 | 13497 | /* FIXME we need to get register block size some other way. */ |
5cd63fda | 13498 | trace_regblock_size |
9d6eea31 | 13499 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 13500 | |
049dc89b JK |
13501 | putpkt ("qTStatus"); |
13502 | ||
a70b8144 | 13503 | try |
67f41397 | 13504 | { |
b6bb3468 | 13505 | p = remote_get_noisy_reply (); |
67f41397 | 13506 | } |
230d2906 | 13507 | catch (const gdb_exception_error &ex) |
67f41397 | 13508 | { |
598d3636 JK |
13509 | if (ex.error != TARGET_CLOSE_ERROR) |
13510 | { | |
13511 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13512 | return -1; | |
13513 | } | |
eedc3f4f | 13514 | throw; |
67f41397 | 13515 | } |
00bf0b85 | 13516 | |
bd3eecc3 PA |
13517 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
13518 | ||
00bf0b85 | 13519 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13520 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13521 | return -1; |
35b1e5cc | 13522 | |
00bf0b85 | 13523 | /* We're working with a live target. */ |
f5911ea1 | 13524 | ts->filename = NULL; |
00bf0b85 | 13525 | |
00bf0b85 | 13526 | if (*p++ != 'T') |
8d64371b | 13527 | error (_("Bogus trace status reply from target: %s"), rs->buf.data ()); |
35b1e5cc | 13528 | |
84cebc4a YQ |
13529 | /* Function 'parse_trace_status' sets default value of each field of |
13530 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13531 | parse_trace_status (p, ts); |
13532 | ||
13533 | return ts->running; | |
35b1e5cc SS |
13534 | } |
13535 | ||
f6ac5f3d PA |
13536 | void |
13537 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13538 | struct uploaded_tp *utp) | |
f196051f SS |
13539 | { |
13540 | struct remote_state *rs = get_remote_state (); | |
f196051f | 13541 | char *reply; |
f196051f | 13542 | struct tracepoint *tp = (struct tracepoint *) bp; |
bba74b36 | 13543 | size_t size = get_remote_packet_size (); |
f196051f SS |
13544 | |
13545 | if (tp) | |
13546 | { | |
c1fc2657 | 13547 | tp->hit_count = 0; |
f196051f | 13548 | tp->traceframe_usage = 0; |
40cb8ca5 | 13549 | for (bp_location *loc : tp->locations ()) |
f196051f SS |
13550 | { |
13551 | /* If the tracepoint was never downloaded, don't go asking for | |
13552 | any status. */ | |
13553 | if (tp->number_on_target == 0) | |
13554 | continue; | |
8d64371b | 13555 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", tp->number_on_target, |
bba74b36 | 13556 | phex_nz (loc->address, 0)); |
f196051f | 13557 | putpkt (rs->buf); |
b6bb3468 | 13558 | reply = remote_get_noisy_reply (); |
f196051f SS |
13559 | if (reply && *reply) |
13560 | { | |
13561 | if (*reply == 'V') | |
13562 | parse_tracepoint_status (reply + 1, bp, utp); | |
13563 | } | |
13564 | } | |
13565 | } | |
13566 | else if (utp) | |
13567 | { | |
13568 | utp->hit_count = 0; | |
13569 | utp->traceframe_usage = 0; | |
8d64371b | 13570 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", utp->number, |
bba74b36 | 13571 | phex_nz (utp->addr, 0)); |
f196051f | 13572 | putpkt (rs->buf); |
b6bb3468 | 13573 | reply = remote_get_noisy_reply (); |
f196051f SS |
13574 | if (reply && *reply) |
13575 | { | |
13576 | if (*reply == 'V') | |
13577 | parse_tracepoint_status (reply + 1, bp, utp); | |
13578 | } | |
13579 | } | |
13580 | } | |
13581 | ||
f6ac5f3d PA |
13582 | void |
13583 | remote_target::trace_stop () | |
35b1e5cc | 13584 | { |
b6bb3468 PA |
13585 | struct remote_state *rs = get_remote_state (); |
13586 | ||
35b1e5cc | 13587 | putpkt ("QTStop"); |
b6bb3468 | 13588 | remote_get_noisy_reply (); |
8d64371b | 13589 | if (rs->buf[0] == '\0') |
ad91cd99 | 13590 | error (_("Target does not support this command.")); |
8d64371b TT |
13591 | if (strcmp (rs->buf.data (), "OK") != 0) |
13592 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13593 | } |
13594 | ||
f6ac5f3d PA |
13595 | int |
13596 | remote_target::trace_find (enum trace_find_type type, int num, | |
13597 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13598 | int *tpp) | |
35b1e5cc SS |
13599 | { |
13600 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 13601 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
35b1e5cc SS |
13602 | char *p, *reply; |
13603 | int target_frameno = -1, target_tracept = -1; | |
13604 | ||
e6e4e701 PA |
13605 | /* Lookups other than by absolute frame number depend on the current |
13606 | trace selected, so make sure it is correct on the remote end | |
13607 | first. */ | |
13608 | if (type != tfind_number) | |
13609 | set_remote_traceframe (); | |
13610 | ||
8d64371b | 13611 | p = rs->buf.data (); |
35b1e5cc SS |
13612 | strcpy (p, "QTFrame:"); |
13613 | p = strchr (p, '\0'); | |
13614 | switch (type) | |
13615 | { | |
13616 | case tfind_number: | |
bba74b36 | 13617 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13618 | break; |
13619 | case tfind_pc: | |
bba74b36 | 13620 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13621 | break; |
13622 | case tfind_tp: | |
bba74b36 | 13623 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13624 | break; |
13625 | case tfind_range: | |
bba74b36 YQ |
13626 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13627 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13628 | break; |
13629 | case tfind_outside: | |
bba74b36 YQ |
13630 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13631 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13632 | break; |
13633 | default: | |
9b20d036 | 13634 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13635 | } |
13636 | ||
13637 | putpkt (rs->buf); | |
b6bb3468 | 13638 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13639 | if (*reply == '\0') |
13640 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13641 | |
13642 | while (reply && *reply) | |
13643 | switch (*reply) | |
13644 | { | |
13645 | case 'F': | |
f197e0f1 VP |
13646 | p = ++reply; |
13647 | target_frameno = (int) strtol (p, &reply, 16); | |
13648 | if (reply == p) | |
13649 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13650 | /* Don't update our remote traceframe number cache on failure |
13651 | to select a remote traceframe. */ | |
f197e0f1 VP |
13652 | if (target_frameno == -1) |
13653 | return -1; | |
35b1e5cc SS |
13654 | break; |
13655 | case 'T': | |
f197e0f1 VP |
13656 | p = ++reply; |
13657 | target_tracept = (int) strtol (p, &reply, 16); | |
13658 | if (reply == p) | |
13659 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13660 | break; |
13661 | case 'O': /* "OK"? */ | |
13662 | if (reply[1] == 'K' && reply[2] == '\0') | |
13663 | reply += 2; | |
13664 | else | |
13665 | error (_("Bogus reply from target: %s"), reply); | |
13666 | break; | |
13667 | default: | |
13668 | error (_("Bogus reply from target: %s"), reply); | |
13669 | } | |
13670 | if (tpp) | |
13671 | *tpp = target_tracept; | |
e6e4e701 | 13672 | |
262e1174 | 13673 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13674 | return target_frameno; |
13675 | } | |
13676 | ||
57810aa7 | 13677 | bool |
f6ac5f3d | 13678 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13679 | { |
13680 | struct remote_state *rs = get_remote_state (); | |
13681 | char *reply; | |
13682 | ULONGEST uval; | |
13683 | ||
e6e4e701 PA |
13684 | set_remote_traceframe (); |
13685 | ||
8d64371b | 13686 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13687 | putpkt (rs->buf); |
b6bb3468 | 13688 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13689 | if (reply && *reply) |
13690 | { | |
13691 | if (*reply == 'V') | |
13692 | { | |
13693 | unpack_varlen_hex (reply + 1, &uval); | |
13694 | *val = (LONGEST) uval; | |
57810aa7 | 13695 | return true; |
35b1e5cc SS |
13696 | } |
13697 | } | |
57810aa7 | 13698 | return false; |
35b1e5cc SS |
13699 | } |
13700 | ||
f6ac5f3d PA |
13701 | int |
13702 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13703 | { |
13704 | struct remote_state *rs = get_remote_state (); | |
13705 | char *p, *reply; | |
13706 | ||
8d64371b | 13707 | p = rs->buf.data (); |
00bf0b85 SS |
13708 | strcpy (p, "QTSave:"); |
13709 | p += strlen (p); | |
8d64371b TT |
13710 | if ((p - rs->buf.data ()) + strlen (filename) * 2 |
13711 | >= get_remote_packet_size ()) | |
00bf0b85 | 13712 | error (_("Remote file name too long for trace save packet")); |
9f1b45b0 | 13713 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13714 | *p++ = '\0'; |
13715 | putpkt (rs->buf); | |
b6bb3468 | 13716 | reply = remote_get_noisy_reply (); |
d6c5869f | 13717 | if (*reply == '\0') |
ad91cd99 PA |
13718 | error (_("Target does not support this command.")); |
13719 | if (strcmp (reply, "OK") != 0) | |
13720 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13721 | return 0; |
13722 | } | |
13723 | ||
13724 | /* This is basically a memory transfer, but needs to be its own packet | |
13725 | because we don't know how the target actually organizes its trace | |
13726 | memory, plus we want to be able to ask for as much as possible, but | |
13727 | not be unhappy if we don't get as much as we ask for. */ | |
13728 | ||
f6ac5f3d PA |
13729 | LONGEST |
13730 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13731 | { |
13732 | struct remote_state *rs = get_remote_state (); | |
13733 | char *reply; | |
13734 | char *p; | |
13735 | int rslt; | |
13736 | ||
8d64371b | 13737 | p = rs->buf.data (); |
00bf0b85 SS |
13738 | strcpy (p, "qTBuffer:"); |
13739 | p += strlen (p); | |
13740 | p += hexnumstr (p, offset); | |
13741 | *p++ = ','; | |
13742 | p += hexnumstr (p, len); | |
13743 | *p++ = '\0'; | |
13744 | ||
13745 | putpkt (rs->buf); | |
b6bb3468 | 13746 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13747 | if (reply && *reply) |
13748 | { | |
13749 | /* 'l' by itself means we're at the end of the buffer and | |
13750 | there is nothing more to get. */ | |
13751 | if (*reply == 'l') | |
13752 | return 0; | |
13753 | ||
13754 | /* Convert the reply into binary. Limit the number of bytes to | |
13755 | convert according to our passed-in buffer size, rather than | |
13756 | what was returned in the packet; if the target is | |
13757 | unexpectedly generous and gives us a bigger reply than we | |
13758 | asked for, we don't want to crash. */ | |
b6bb3468 | 13759 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13760 | return rslt; |
13761 | } | |
13762 | ||
13763 | /* Something went wrong, flag as an error. */ | |
13764 | return -1; | |
13765 | } | |
13766 | ||
f6ac5f3d PA |
13767 | void |
13768 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13769 | { |
13770 | struct remote_state *rs = get_remote_state (); | |
13771 | ||
4082afcc | 13772 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13773 | { |
ad91cd99 PA |
13774 | char *reply; |
13775 | ||
8d64371b TT |
13776 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13777 | "QTDisconnected:%x", val); | |
33da3f1c | 13778 | putpkt (rs->buf); |
b6bb3468 | 13779 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13780 | if (*reply == '\0') |
33da3f1c | 13781 | error (_("Target does not support this command.")); |
ad91cd99 | 13782 | if (strcmp (reply, "OK") != 0) |
dda83cd7 | 13783 | error (_("Bogus reply from target: %s"), reply); |
33da3f1c SS |
13784 | } |
13785 | else if (val) | |
13786 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13787 | } |
13788 | ||
f6ac5f3d PA |
13789 | int |
13790 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c | 13791 | { |
5b6d1e4f | 13792 | thread_info *info = find_thread_ptid (this, ptid); |
a744cf53 | 13793 | |
7aabaf9d SM |
13794 | if (info != NULL && info->priv != NULL) |
13795 | return get_remote_thread_info (info)->core; | |
13796 | ||
dc146f7c VP |
13797 | return -1; |
13798 | } | |
13799 | ||
f6ac5f3d PA |
13800 | void |
13801 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13802 | { |
13803 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13804 | char *reply; |
4daf5ac0 | 13805 | |
8d64371b TT |
13806 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13807 | "QTBuffer:circular:%x", val); | |
4daf5ac0 | 13808 | putpkt (rs->buf); |
b6bb3468 | 13809 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13810 | if (*reply == '\0') |
4daf5ac0 | 13811 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13812 | if (strcmp (reply, "OK") != 0) |
13813 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13814 | } |
13815 | ||
f6ac5f3d PA |
13816 | traceframe_info_up |
13817 | remote_target::traceframe_info () | |
b3b9301e | 13818 | { |
9018be22 | 13819 | gdb::optional<gdb::char_vector> text |
328d42d8 SM |
13820 | = target_read_stralloc (current_inferior ()->top_target (), |
13821 | TARGET_OBJECT_TRACEFRAME_INFO, | |
b7b030ad | 13822 | NULL); |
9018be22 SM |
13823 | if (text) |
13824 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13825 | |
13826 | return NULL; | |
13827 | } | |
13828 | ||
405f8e94 SS |
13829 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13830 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13831 | if the packet is not supported, and 0 if the minimum instruction | |
13832 | length is unknown. */ | |
13833 | ||
f6ac5f3d PA |
13834 | int |
13835 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13836 | { |
13837 | struct remote_state *rs = get_remote_state (); | |
13838 | char *reply; | |
13839 | ||
e886a173 PA |
13840 | /* If we're not debugging a process yet, the IPA can't be |
13841 | loaded. */ | |
55f6301a | 13842 | if (!target_has_execution ()) |
e886a173 PA |
13843 | return 0; |
13844 | ||
13845 | /* Make sure the remote is pointing at the right process. */ | |
13846 | set_general_process (); | |
13847 | ||
8d64371b | 13848 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13849 | putpkt (rs->buf); |
b6bb3468 | 13850 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13851 | if (*reply == '\0') |
13852 | return -1; | |
13853 | else | |
13854 | { | |
13855 | ULONGEST min_insn_len; | |
13856 | ||
13857 | unpack_varlen_hex (reply, &min_insn_len); | |
13858 | ||
13859 | return (int) min_insn_len; | |
13860 | } | |
13861 | } | |
13862 | ||
f6ac5f3d PA |
13863 | void |
13864 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13865 | { |
4082afcc | 13866 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13867 | { |
13868 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13869 | char *buf = rs->buf.data (); |
13870 | char *endbuf = buf + get_remote_packet_size (); | |
f6f899bf HAQ |
13871 | enum packet_result result; |
13872 | ||
13873 | gdb_assert (val >= 0 || val == -1); | |
13874 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13875 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13876 | if (val < 0) | |
13877 | { | |
13878 | *buf++ = '-'; | |
dda83cd7 | 13879 | buf += hexnumstr (buf, (ULONGEST) -val); |
f6f899bf HAQ |
13880 | } |
13881 | else | |
13882 | buf += hexnumstr (buf, (ULONGEST) val); | |
13883 | ||
13884 | putpkt (rs->buf); | |
b6bb3468 | 13885 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13886 | result = packet_ok (rs->buf, |
13887 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13888 | ||
13889 | if (result != PACKET_OK) | |
8d64371b | 13890 | warning (_("Bogus reply from target: %s"), rs->buf.data ()); |
f6f899bf HAQ |
13891 | } |
13892 | } | |
13893 | ||
57810aa7 | 13894 | bool |
f6ac5f3d PA |
13895 | remote_target::set_trace_notes (const char *user, const char *notes, |
13896 | const char *stop_notes) | |
f196051f SS |
13897 | { |
13898 | struct remote_state *rs = get_remote_state (); | |
13899 | char *reply; | |
8d64371b TT |
13900 | char *buf = rs->buf.data (); |
13901 | char *endbuf = buf + get_remote_packet_size (); | |
f196051f SS |
13902 | int nbytes; |
13903 | ||
13904 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13905 | if (user) | |
13906 | { | |
13907 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13908 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13909 | buf += 2 * nbytes; |
13910 | *buf++ = ';'; | |
13911 | } | |
13912 | if (notes) | |
13913 | { | |
13914 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13915 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13916 | buf += 2 * nbytes; |
13917 | *buf++ = ';'; | |
13918 | } | |
13919 | if (stop_notes) | |
13920 | { | |
13921 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13922 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13923 | buf += 2 * nbytes; |
13924 | *buf++ = ';'; | |
13925 | } | |
13926 | /* Ensure the buffer is terminated. */ | |
13927 | *buf = '\0'; | |
13928 | ||
13929 | putpkt (rs->buf); | |
b6bb3468 | 13930 | reply = remote_get_noisy_reply (); |
f196051f | 13931 | if (*reply == '\0') |
57810aa7 | 13932 | return false; |
f196051f SS |
13933 | |
13934 | if (strcmp (reply, "OK") != 0) | |
13935 | error (_("Bogus reply from target: %s"), reply); | |
13936 | ||
57810aa7 | 13937 | return true; |
f196051f SS |
13938 | } |
13939 | ||
57810aa7 PA |
13940 | bool |
13941 | remote_target::use_agent (bool use) | |
d1feda86 | 13942 | { |
4082afcc | 13943 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13944 | { |
13945 | struct remote_state *rs = get_remote_state (); | |
13946 | ||
13947 | /* If the stub supports QAgent. */ | |
8d64371b | 13948 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 | 13949 | putpkt (rs->buf); |
8d64371b | 13950 | getpkt (&rs->buf, 0); |
d1feda86 | 13951 | |
8d64371b | 13952 | if (strcmp (rs->buf.data (), "OK") == 0) |
d1feda86 | 13953 | { |
f6ac5f3d | 13954 | ::use_agent = use; |
57810aa7 | 13955 | return true; |
d1feda86 YQ |
13956 | } |
13957 | } | |
13958 | ||
57810aa7 | 13959 | return false; |
d1feda86 YQ |
13960 | } |
13961 | ||
57810aa7 | 13962 | bool |
f6ac5f3d | 13963 | remote_target::can_use_agent () |
d1feda86 | 13964 | { |
4082afcc | 13965 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13966 | } |
13967 | ||
9accd112 MM |
13968 | struct btrace_target_info |
13969 | { | |
13970 | /* The ptid of the traced thread. */ | |
13971 | ptid_t ptid; | |
f4abbc16 MM |
13972 | |
13973 | /* The obtained branch trace configuration. */ | |
13974 | struct btrace_config conf; | |
9accd112 MM |
13975 | }; |
13976 | ||
f4abbc16 MM |
13977 | /* Reset our idea of our target's btrace configuration. */ |
13978 | ||
13979 | static void | |
6b8edb51 | 13980 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 13981 | { |
f4abbc16 MM |
13982 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
13983 | } | |
13984 | ||
f4abbc16 MM |
13985 | /* Synchronize the configuration with the target. */ |
13986 | ||
6b8edb51 PA |
13987 | void |
13988 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 13989 | { |
d33501a5 MM |
13990 | struct packet_config *packet; |
13991 | struct remote_state *rs; | |
13992 | char *buf, *pos, *endbuf; | |
13993 | ||
13994 | rs = get_remote_state (); | |
8d64371b | 13995 | buf = rs->buf.data (); |
d33501a5 MM |
13996 | endbuf = buf + get_remote_packet_size (); |
13997 | ||
13998 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13999 | if (packet_config_support (packet) == PACKET_ENABLE | |
14000 | && conf->bts.size != rs->btrace_config.bts.size) | |
14001 | { | |
14002 | pos = buf; | |
14003 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
dda83cd7 | 14004 | conf->bts.size); |
d33501a5 MM |
14005 | |
14006 | putpkt (buf); | |
8d64371b | 14007 | getpkt (&rs->buf, 0); |
d33501a5 MM |
14008 | |
14009 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
14010 | { | |
14011 | if (buf[0] == 'E' && buf[1] == '.') | |
14012 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
14013 | else | |
14014 | error (_("Failed to configure the BTS buffer size.")); | |
14015 | } | |
14016 | ||
14017 | rs->btrace_config.bts.size = conf->bts.size; | |
14018 | } | |
b20a6524 MM |
14019 | |
14020 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
14021 | if (packet_config_support (packet) == PACKET_ENABLE | |
14022 | && conf->pt.size != rs->btrace_config.pt.size) | |
14023 | { | |
14024 | pos = buf; | |
14025 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
dda83cd7 | 14026 | conf->pt.size); |
b20a6524 MM |
14027 | |
14028 | putpkt (buf); | |
8d64371b | 14029 | getpkt (&rs->buf, 0); |
b20a6524 MM |
14030 | |
14031 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
14032 | { | |
14033 | if (buf[0] == 'E' && buf[1] == '.') | |
14034 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
14035 | else | |
14036 | error (_("Failed to configure the trace buffer size.")); | |
14037 | } | |
14038 | ||
14039 | rs->btrace_config.pt.size = conf->pt.size; | |
14040 | } | |
f4abbc16 MM |
14041 | } |
14042 | ||
14043 | /* Read the current thread's btrace configuration from the target and | |
14044 | store it into CONF. */ | |
14045 | ||
14046 | static void | |
14047 | btrace_read_config (struct btrace_config *conf) | |
14048 | { | |
9018be22 | 14049 | gdb::optional<gdb::char_vector> xml |
328d42d8 SM |
14050 | = target_read_stralloc (current_inferior ()->top_target (), |
14051 | TARGET_OBJECT_BTRACE_CONF, ""); | |
9018be22 SM |
14052 | if (xml) |
14053 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
14054 | } |
14055 | ||
c0272db5 TW |
14056 | /* Maybe reopen target btrace. */ |
14057 | ||
6b8edb51 PA |
14058 | void |
14059 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
14060 | { |
14061 | struct remote_state *rs = get_remote_state (); | |
c0272db5 | 14062 | int btrace_target_pushed = 0; |
15766370 | 14063 | #if !defined (HAVE_LIBIPT) |
c0272db5 | 14064 | int warned = 0; |
15766370 | 14065 | #endif |
c0272db5 | 14066 | |
aedbe3bb CM |
14067 | /* Don't bother walking the entirety of the remote thread list when |
14068 | we know the feature isn't supported by the remote. */ | |
14069 | if (packet_support (PACKET_qXfer_btrace_conf) != PACKET_ENABLE) | |
14070 | return; | |
14071 | ||
5ed8105e PA |
14072 | scoped_restore_current_thread restore_thread; |
14073 | ||
5b6d1e4f | 14074 | for (thread_info *tp : all_non_exited_threads (this)) |
c0272db5 TW |
14075 | { |
14076 | set_general_thread (tp->ptid); | |
14077 | ||
14078 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
14079 | btrace_read_config (&rs->btrace_config); | |
14080 | ||
14081 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
14082 | continue; | |
14083 | ||
14084 | #if !defined (HAVE_LIBIPT) | |
14085 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
14086 | { | |
14087 | if (!warned) | |
14088 | { | |
14089 | warned = 1; | |
c4e12631 MM |
14090 | warning (_("Target is recording using Intel Processor Trace " |
14091 | "but support was disabled at compile time.")); | |
c0272db5 TW |
14092 | } |
14093 | ||
14094 | continue; | |
14095 | } | |
14096 | #endif /* !defined (HAVE_LIBIPT) */ | |
14097 | ||
14098 | /* Push target, once, but before anything else happens. This way our | |
14099 | changes to the threads will be cleaned up by unpushing the target | |
14100 | in case btrace_read_config () throws. */ | |
14101 | if (!btrace_target_pushed) | |
14102 | { | |
14103 | btrace_target_pushed = 1; | |
14104 | record_btrace_push_target (); | |
14105 | printf_filtered (_("Target is recording using %s.\n"), | |
14106 | btrace_format_string (rs->btrace_config.format)); | |
14107 | } | |
14108 | ||
14109 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
14110 | tp->btrace.target->ptid = tp->ptid; | |
14111 | tp->btrace.target->conf = rs->btrace_config; | |
14112 | } | |
c0272db5 TW |
14113 | } |
14114 | ||
9accd112 MM |
14115 | /* Enable branch tracing. */ |
14116 | ||
f6ac5f3d PA |
14117 | struct btrace_target_info * |
14118 | remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf) | |
9accd112 MM |
14119 | { |
14120 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 14121 | struct packet_config *packet = NULL; |
9accd112 | 14122 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
14123 | char *buf = rs->buf.data (); |
14124 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14125 | |
b20a6524 MM |
14126 | switch (conf->format) |
14127 | { | |
14128 | case BTRACE_FORMAT_BTS: | |
14129 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
14130 | break; | |
14131 | ||
14132 | case BTRACE_FORMAT_PT: | |
14133 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
14134 | break; | |
14135 | } | |
14136 | ||
14137 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
14138 | error (_("Target does not support branch tracing.")); |
14139 | ||
f4abbc16 MM |
14140 | btrace_sync_conf (conf); |
14141 | ||
9accd112 MM |
14142 | set_general_thread (ptid); |
14143 | ||
14144 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
14145 | putpkt (rs->buf); | |
8d64371b | 14146 | getpkt (&rs->buf, 0); |
9accd112 MM |
14147 | |
14148 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
14149 | { | |
14150 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14151 | error (_("Could not enable branch tracing for %s: %s"), | |
a068643d | 14152 | target_pid_to_str (ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14153 | else |
14154 | error (_("Could not enable branch tracing for %s."), | |
a068643d | 14155 | target_pid_to_str (ptid).c_str ()); |
9accd112 MM |
14156 | } |
14157 | ||
8d749320 | 14158 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
14159 | tinfo->ptid = ptid; |
14160 | ||
f4abbc16 MM |
14161 | /* If we fail to read the configuration, we lose some information, but the |
14162 | tracing itself is not impacted. */ | |
a70b8144 | 14163 | try |
492d29ea PA |
14164 | { |
14165 | btrace_read_config (&tinfo->conf); | |
14166 | } | |
230d2906 | 14167 | catch (const gdb_exception_error &err) |
492d29ea PA |
14168 | { |
14169 | if (err.message != NULL) | |
3d6e9d23 | 14170 | warning ("%s", err.what ()); |
492d29ea | 14171 | } |
f4abbc16 | 14172 | |
9accd112 MM |
14173 | return tinfo; |
14174 | } | |
14175 | ||
14176 | /* Disable branch tracing. */ | |
14177 | ||
f6ac5f3d PA |
14178 | void |
14179 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14180 | { |
14181 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
14182 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
14183 | char *buf = rs->buf.data (); |
14184 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14185 | |
4082afcc | 14186 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14187 | error (_("Target does not support branch tracing.")); |
14188 | ||
14189 | set_general_thread (tinfo->ptid); | |
14190 | ||
14191 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
14192 | putpkt (rs->buf); | |
8d64371b | 14193 | getpkt (&rs->buf, 0); |
9accd112 MM |
14194 | |
14195 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
14196 | { | |
14197 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14198 | error (_("Could not disable branch tracing for %s: %s"), | |
a068643d | 14199 | target_pid_to_str (tinfo->ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14200 | else |
14201 | error (_("Could not disable branch tracing for %s."), | |
a068643d | 14202 | target_pid_to_str (tinfo->ptid).c_str ()); |
9accd112 MM |
14203 | } |
14204 | ||
14205 | xfree (tinfo); | |
14206 | } | |
14207 | ||
14208 | /* Teardown branch tracing. */ | |
14209 | ||
f6ac5f3d PA |
14210 | void |
14211 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14212 | { |
14213 | /* We must not talk to the target during teardown. */ | |
14214 | xfree (tinfo); | |
14215 | } | |
14216 | ||
14217 | /* Read the branch trace. */ | |
14218 | ||
f6ac5f3d PA |
14219 | enum btrace_error |
14220 | remote_target::read_btrace (struct btrace_data *btrace, | |
14221 | struct btrace_target_info *tinfo, | |
14222 | enum btrace_read_type type) | |
9accd112 MM |
14223 | { |
14224 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 14225 | const char *annex; |
9accd112 | 14226 | |
4082afcc | 14227 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14228 | error (_("Target does not support branch tracing.")); |
14229 | ||
14230 | #if !defined(HAVE_LIBEXPAT) | |
14231 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
14232 | #endif | |
14233 | ||
14234 | switch (type) | |
14235 | { | |
864089d2 | 14236 | case BTRACE_READ_ALL: |
9accd112 MM |
14237 | annex = "all"; |
14238 | break; | |
864089d2 | 14239 | case BTRACE_READ_NEW: |
9accd112 MM |
14240 | annex = "new"; |
14241 | break; | |
969c39fb MM |
14242 | case BTRACE_READ_DELTA: |
14243 | annex = "delta"; | |
14244 | break; | |
9accd112 MM |
14245 | default: |
14246 | internal_error (__FILE__, __LINE__, | |
14247 | _("Bad branch tracing read type: %u."), | |
14248 | (unsigned int) type); | |
14249 | } | |
14250 | ||
9018be22 | 14251 | gdb::optional<gdb::char_vector> xml |
328d42d8 SM |
14252 | = target_read_stralloc (current_inferior ()->top_target (), |
14253 | TARGET_OBJECT_BTRACE, annex); | |
9018be22 | 14254 | if (!xml) |
969c39fb | 14255 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 14256 | |
9018be22 | 14257 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 14258 | |
969c39fb | 14259 | return BTRACE_ERR_NONE; |
9accd112 MM |
14260 | } |
14261 | ||
f6ac5f3d PA |
14262 | const struct btrace_config * |
14263 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
14264 | { |
14265 | return &tinfo->conf; | |
14266 | } | |
14267 | ||
57810aa7 | 14268 | bool |
f6ac5f3d | 14269 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 14270 | { |
4082afcc PA |
14271 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
14272 | == PACKET_ENABLE); | |
ced63ec0 GB |
14273 | } |
14274 | ||
9dd130a0 TT |
14275 | /* Implementation of to_load. */ |
14276 | ||
f6ac5f3d PA |
14277 | void |
14278 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
14279 | { |
14280 | generic_load (name, from_tty); | |
14281 | } | |
14282 | ||
c78fa86a GB |
14283 | /* Accepts an integer PID; returns a string representing a file that |
14284 | can be opened on the remote side to get the symbols for the child | |
14285 | process. Returns NULL if the operation is not supported. */ | |
14286 | ||
f6ac5f3d PA |
14287 | char * |
14288 | remote_target::pid_to_exec_file (int pid) | |
c78fa86a | 14289 | { |
9018be22 | 14290 | static gdb::optional<gdb::char_vector> filename; |
835205d0 | 14291 | char *annex = NULL; |
c78fa86a GB |
14292 | |
14293 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
14294 | return NULL; | |
14295 | ||
5b6d1e4f | 14296 | inferior *inf = find_inferior_pid (this, pid); |
835205d0 GB |
14297 | if (inf == NULL) |
14298 | internal_error (__FILE__, __LINE__, | |
14299 | _("not currently attached to process %d"), pid); | |
14300 | ||
14301 | if (!inf->fake_pid_p) | |
14302 | { | |
14303 | const int annex_size = 9; | |
14304 | ||
224c3ddb | 14305 | annex = (char *) alloca (annex_size); |
835205d0 GB |
14306 | xsnprintf (annex, annex_size, "%x", pid); |
14307 | } | |
14308 | ||
328d42d8 | 14309 | filename = target_read_stralloc (current_inferior ()->top_target (), |
c78fa86a GB |
14310 | TARGET_OBJECT_EXEC_FILE, annex); |
14311 | ||
9018be22 | 14312 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
14313 | } |
14314 | ||
750ce8d1 YQ |
14315 | /* Implement the to_can_do_single_step target_ops method. */ |
14316 | ||
f6ac5f3d PA |
14317 | int |
14318 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
14319 | { |
14320 | /* We can only tell whether target supports single step or not by | |
14321 | supported s and S vCont actions if the stub supports vContSupported | |
14322 | feature. If the stub doesn't support vContSupported feature, | |
14323 | we have conservatively to think target doesn't supports single | |
14324 | step. */ | |
14325 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
14326 | { | |
14327 | struct remote_state *rs = get_remote_state (); | |
14328 | ||
14329 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
6b8edb51 | 14330 | remote_vcont_probe (); |
750ce8d1 YQ |
14331 | |
14332 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
14333 | } | |
14334 | else | |
14335 | return 0; | |
14336 | } | |
14337 | ||
3a00c802 PA |
14338 | /* Implementation of the to_execution_direction method for the remote |
14339 | target. */ | |
14340 | ||
f6ac5f3d PA |
14341 | enum exec_direction_kind |
14342 | remote_target::execution_direction () | |
3a00c802 PA |
14343 | { |
14344 | struct remote_state *rs = get_remote_state (); | |
14345 | ||
14346 | return rs->last_resume_exec_dir; | |
14347 | } | |
14348 | ||
f6327dcb KB |
14349 | /* Return pointer to the thread_info struct which corresponds to |
14350 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
14351 | ||
f6ac5f3d PA |
14352 | thread_info * |
14353 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
14354 | int handle_len, | |
14355 | inferior *inf) | |
f6327dcb | 14356 | { |
5b6d1e4f | 14357 | for (thread_info *tp : all_non_exited_threads (this)) |
f6327dcb | 14358 | { |
7aabaf9d | 14359 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
14360 | |
14361 | if (tp->inf == inf && priv != NULL) | |
dda83cd7 | 14362 | { |
7aabaf9d | 14363 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 14364 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
dda83cd7 | 14365 | handle_len, priv->thread_handle.size ()); |
7aabaf9d | 14366 | if (memcmp (thread_handle, priv->thread_handle.data (), |
dda83cd7 | 14367 | handle_len) == 0) |
f6327dcb KB |
14368 | return tp; |
14369 | } | |
14370 | } | |
14371 | ||
14372 | return NULL; | |
14373 | } | |
14374 | ||
3d6c6204 KB |
14375 | gdb::byte_vector |
14376 | remote_target::thread_info_to_thread_handle (struct thread_info *tp) | |
14377 | { | |
14378 | remote_thread_info *priv = get_remote_thread_info (tp); | |
14379 | return priv->thread_handle; | |
14380 | } | |
14381 | ||
57810aa7 | 14382 | bool |
f6ac5f3d | 14383 | remote_target::can_async_p () |
6426a772 | 14384 | { |
5d93a237 TT |
14385 | struct remote_state *rs = get_remote_state (); |
14386 | ||
3015c064 SM |
14387 | /* We don't go async if the user has explicitly prevented it with the |
14388 | "maint set target-async" command. */ | |
c6ebd6cf | 14389 | if (!target_async_permitted) |
57810aa7 | 14390 | return false; |
75c99385 | 14391 | |
23860348 | 14392 | /* We're async whenever the serial device is. */ |
5d93a237 | 14393 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
14394 | } |
14395 | ||
57810aa7 | 14396 | bool |
f6ac5f3d | 14397 | remote_target::is_async_p () |
6426a772 | 14398 | { |
5d93a237 TT |
14399 | struct remote_state *rs = get_remote_state (); |
14400 | ||
c6ebd6cf | 14401 | if (!target_async_permitted) |
75c99385 | 14402 | /* We only enable async when the user specifically asks for it. */ |
57810aa7 | 14403 | return false; |
75c99385 | 14404 | |
23860348 | 14405 | /* We're async whenever the serial device is. */ |
5d93a237 | 14406 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
14407 | } |
14408 | ||
2acceee2 JM |
14409 | /* Pass the SERIAL event on and up to the client. One day this code |
14410 | will be able to delay notifying the client of an event until the | |
23860348 | 14411 | point where an entire packet has been received. */ |
2acceee2 | 14412 | |
2acceee2 JM |
14413 | static serial_event_ftype remote_async_serial_handler; |
14414 | ||
6426a772 | 14415 | static void |
819cc324 | 14416 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14417 | { |
2acceee2 JM |
14418 | /* Don't propogate error information up to the client. Instead let |
14419 | the client find out about the error by querying the target. */ | |
b1a35af2 | 14420 | inferior_event_handler (INF_REG_EVENT); |
2acceee2 JM |
14421 | } |
14422 | ||
74531fed PA |
14423 | static void |
14424 | remote_async_inferior_event_handler (gdb_client_data data) | |
14425 | { | |
6b36ddeb | 14426 | inferior_event_handler (INF_REG_EVENT); |
74531fed PA |
14427 | } |
14428 | ||
5b6d1e4f PA |
14429 | int |
14430 | remote_target::async_wait_fd () | |
14431 | { | |
14432 | struct remote_state *rs = get_remote_state (); | |
14433 | return rs->remote_desc->fd; | |
14434 | } | |
14435 | ||
f6ac5f3d PA |
14436 | void |
14437 | remote_target::async (int enable) | |
2acceee2 | 14438 | { |
5d93a237 TT |
14439 | struct remote_state *rs = get_remote_state (); |
14440 | ||
6a3753b3 | 14441 | if (enable) |
2acceee2 | 14442 | { |
88b496c3 | 14443 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14444 | |
14445 | /* If there are pending events in the stop reply queue tell the | |
14446 | event loop to process them. */ | |
953edf2b | 14447 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 14448 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14449 | /* For simplicity, below we clear the pending events token |
14450 | without remembering whether it is marked, so here we always | |
14451 | mark it. If there's actually no pending notification to | |
14452 | process, this ends up being a no-op (other than a spurious | |
14453 | event-loop wakeup). */ | |
14454 | if (target_is_non_stop_p ()) | |
14455 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14456 | } |
14457 | else | |
b7d2e916 PA |
14458 | { |
14459 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14460 | /* If the core is disabling async, it doesn't want to be |
14461 | disturbed with target events. Clear all async event sources | |
14462 | too. */ | |
6b8edb51 | 14463 | clear_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14464 | if (target_is_non_stop_p ()) |
14465 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14466 | } |
6426a772 JM |
14467 | } |
14468 | ||
65706a29 PA |
14469 | /* Implementation of the to_thread_events method. */ |
14470 | ||
f6ac5f3d PA |
14471 | void |
14472 | remote_target::thread_events (int enable) | |
65706a29 PA |
14473 | { |
14474 | struct remote_state *rs = get_remote_state (); | |
14475 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
14476 | |
14477 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
14478 | return; | |
14479 | ||
8d64371b | 14480 | xsnprintf (rs->buf.data (), size, "QThreadEvents:%x", enable ? 1 : 0); |
65706a29 | 14481 | putpkt (rs->buf); |
8d64371b | 14482 | getpkt (&rs->buf, 0); |
65706a29 PA |
14483 | |
14484 | switch (packet_ok (rs->buf, | |
14485 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
14486 | { | |
14487 | case PACKET_OK: | |
8d64371b TT |
14488 | if (strcmp (rs->buf.data (), "OK") != 0) |
14489 | error (_("Remote refused setting thread events: %s"), rs->buf.data ()); | |
65706a29 PA |
14490 | break; |
14491 | case PACKET_ERROR: | |
8d64371b | 14492 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
65706a29 PA |
14493 | break; |
14494 | case PACKET_UNKNOWN: | |
14495 | break; | |
14496 | } | |
14497 | } | |
14498 | ||
d471ea57 | 14499 | static void |
981a3fb3 | 14500 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14501 | { |
37a105a1 | 14502 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14503 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14504 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14505 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14506 | |
2e783024 | 14507 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14508 | for (; list != NULL; list = list->next) |
14509 | if (strcmp (list->name, "Z-packet") == 0) | |
14510 | continue; | |
427c3a89 DJ |
14511 | else if (list->type == not_set_cmd) |
14512 | /* Alias commands are exactly like the original, except they | |
14513 | don't have the normal type. */ | |
14514 | continue; | |
14515 | else | |
37a105a1 | 14516 | { |
2e783024 | 14517 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14518 | |
112e8700 SM |
14519 | uiout->field_string ("name", list->name); |
14520 | uiout->text (": "); | |
427c3a89 | 14521 | if (list->type == show_cmd) |
f5c4fcd9 | 14522 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14523 | else |
14524 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 14525 | } |
d471ea57 | 14526 | } |
5a2468f5 | 14527 | |
0f71a2f6 | 14528 | |
23860348 | 14529 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
14530 | static void |
14531 | remote_new_objfile (struct objfile *objfile) | |
14532 | { | |
6b8edb51 | 14533 | remote_target *remote = get_current_remote_target (); |
5d93a237 | 14534 | |
122373f7 SM |
14535 | /* First, check whether the current inferior's process target is a remote |
14536 | target. */ | |
14537 | if (remote == nullptr) | |
14538 | return; | |
14539 | ||
14540 | /* When we are attaching or handling a fork child and the shared library | |
14541 | subsystem reads the list of loaded libraries, we receive new objfile | |
14542 | events in between each found library. The libraries are read in an | |
14543 | undefined order, so if we gave the remote side a chance to look up | |
14544 | symbols between each objfile, we might give it an inconsistent picture | |
14545 | of the inferior. It could appear that a library A appears loaded but | |
14546 | a library B does not, even though library A requires library B. That | |
14547 | would present a state that couldn't normally exist in the inferior. | |
14548 | ||
14549 | So, skip these events, we'll give the remote a chance to look up symbols | |
14550 | once all the loaded libraries and their symbols are known to GDB. */ | |
d424629d JB |
14551 | if (current_inferior ()->in_initial_library_scan) |
14552 | return; | |
122373f7 SM |
14553 | |
14554 | remote->remote_check_symbols (); | |
dc8acb97 MS |
14555 | } |
14556 | ||
00bf0b85 SS |
14557 | /* Pull all the tracepoints defined on the target and create local |
14558 | data structures representing them. We don't want to create real | |
14559 | tracepoints yet, we don't want to mess up the user's existing | |
14560 | collection. */ | |
14561 | ||
f6ac5f3d PA |
14562 | int |
14563 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14564 | { |
00bf0b85 SS |
14565 | struct remote_state *rs = get_remote_state (); |
14566 | char *p; | |
d5551862 | 14567 | |
00bf0b85 SS |
14568 | /* Ask for a first packet of tracepoint definition. */ |
14569 | putpkt ("qTfP"); | |
8d64371b TT |
14570 | getpkt (&rs->buf, 0); |
14571 | p = rs->buf.data (); | |
00bf0b85 | 14572 | while (*p && *p != 'l') |
d5551862 | 14573 | { |
00bf0b85 SS |
14574 | parse_tracepoint_definition (p, utpp); |
14575 | /* Ask for another packet of tracepoint definition. */ | |
14576 | putpkt ("qTsP"); | |
8d64371b TT |
14577 | getpkt (&rs->buf, 0); |
14578 | p = rs->buf.data (); | |
d5551862 | 14579 | } |
00bf0b85 | 14580 | return 0; |
d5551862 SS |
14581 | } |
14582 | ||
f6ac5f3d PA |
14583 | int |
14584 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14585 | { |
00bf0b85 | 14586 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14587 | char *p; |
d5551862 | 14588 | |
00bf0b85 SS |
14589 | /* Ask for a first packet of variable definition. */ |
14590 | putpkt ("qTfV"); | |
8d64371b TT |
14591 | getpkt (&rs->buf, 0); |
14592 | p = rs->buf.data (); | |
00bf0b85 | 14593 | while (*p && *p != 'l') |
d5551862 | 14594 | { |
00bf0b85 SS |
14595 | parse_tsv_definition (p, utsvp); |
14596 | /* Ask for another packet of variable definition. */ | |
14597 | putpkt ("qTsV"); | |
8d64371b TT |
14598 | getpkt (&rs->buf, 0); |
14599 | p = rs->buf.data (); | |
d5551862 | 14600 | } |
00bf0b85 | 14601 | return 0; |
d5551862 SS |
14602 | } |
14603 | ||
c1e36e3e PA |
14604 | /* The "set/show range-stepping" show hook. */ |
14605 | ||
14606 | static void | |
14607 | show_range_stepping (struct ui_file *file, int from_tty, | |
14608 | struct cmd_list_element *c, | |
14609 | const char *value) | |
14610 | { | |
14611 | fprintf_filtered (file, | |
14612 | _("Debugger's willingness to use range stepping " | |
14613 | "is %s.\n"), value); | |
14614 | } | |
14615 | ||
6b8edb51 PA |
14616 | /* Return true if the vCont;r action is supported by the remote |
14617 | stub. */ | |
14618 | ||
14619 | bool | |
14620 | remote_target::vcont_r_supported () | |
14621 | { | |
14622 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
14623 | remote_vcont_probe (); | |
14624 | ||
14625 | return (packet_support (PACKET_vCont) == PACKET_ENABLE | |
14626 | && get_remote_state ()->supports_vCont.r); | |
14627 | } | |
14628 | ||
c1e36e3e PA |
14629 | /* The "set/show range-stepping" set hook. */ |
14630 | ||
14631 | static void | |
eb4c3f4a | 14632 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14633 | struct cmd_list_element *c) |
14634 | { | |
6b8edb51 PA |
14635 | /* When enabling, check whether range stepping is actually supported |
14636 | by the target, and warn if not. */ | |
c1e36e3e PA |
14637 | if (use_range_stepping) |
14638 | { | |
6b8edb51 PA |
14639 | remote_target *remote = get_current_remote_target (); |
14640 | if (remote == NULL | |
14641 | || !remote->vcont_r_supported ()) | |
14642 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
14643 | } |
14644 | } | |
14645 | ||
baf2b57f SM |
14646 | static void |
14647 | show_remote_debug (struct ui_file *file, int from_tty, | |
14648 | struct cmd_list_element *c, const char *value) | |
14649 | { | |
14650 | fprintf_filtered (file, _("Debugging of remote protocol is %s.\n"), | |
14651 | value); | |
14652 | } | |
14653 | ||
14654 | static void | |
14655 | show_remote_timeout (struct ui_file *file, int from_tty, | |
14656 | struct cmd_list_element *c, const char *value) | |
14657 | { | |
14658 | fprintf_filtered (file, | |
14659 | _("Timeout limit to wait for target to respond is %s.\n"), | |
14660 | value); | |
14661 | } | |
14662 | ||
dbe692af LM |
14663 | /* Implement the "supports_memory_tagging" target_ops method. */ |
14664 | ||
14665 | bool | |
14666 | remote_target::supports_memory_tagging () | |
14667 | { | |
2c2e7f87 LM |
14668 | return remote_memory_tagging_p (); |
14669 | } | |
14670 | ||
14671 | /* Create the qMemTags packet given ADDRESS, LEN and TYPE. */ | |
14672 | ||
14673 | static void | |
14674 | create_fetch_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
14675 | size_t len, int type) | |
14676 | { | |
14677 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
14678 | ||
14679 | std::string request = string_printf ("qMemTags:%s,%s:%s", | |
14680 | phex_nz (address, addr_size), | |
14681 | phex_nz (len, sizeof (len)), | |
14682 | phex_nz (type, sizeof (type))); | |
14683 | ||
14684 | strcpy (packet.data (), request.c_str ()); | |
14685 | } | |
14686 | ||
14687 | /* Parse the qMemTags packet reply into TAGS. | |
14688 | ||
14689 | Return true if successful, false otherwise. */ | |
14690 | ||
14691 | static bool | |
14692 | parse_fetch_memtags_reply (const gdb::char_vector &reply, | |
14693 | gdb::byte_vector &tags) | |
14694 | { | |
14695 | if (reply.empty () || reply[0] == 'E' || reply[0] != 'm') | |
14696 | return false; | |
14697 | ||
14698 | /* Copy the tag data. */ | |
14699 | tags = hex2bin (reply.data () + 1); | |
14700 | ||
14701 | return true; | |
14702 | } | |
14703 | ||
14704 | /* Create the QMemTags packet given ADDRESS, LEN, TYPE and TAGS. */ | |
14705 | ||
14706 | static void | |
14707 | create_store_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
14708 | size_t len, int type, | |
14709 | const gdb::byte_vector &tags) | |
14710 | { | |
14711 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
14712 | ||
14713 | /* Put together the main packet, address and length. */ | |
14714 | std::string request = string_printf ("QMemTags:%s,%s:%s:", | |
14715 | phex_nz (address, addr_size), | |
14716 | phex_nz (len, sizeof (len)), | |
14717 | phex_nz (type, sizeof (type))); | |
14718 | request += bin2hex (tags.data (), tags.size ()); | |
14719 | ||
14720 | /* Check if we have exceeded the maximum packet size. */ | |
14721 | if (packet.size () < request.length ()) | |
14722 | error (_("Contents too big for packet QMemTags.")); | |
14723 | ||
14724 | strcpy (packet.data (), request.c_str ()); | |
dbe692af LM |
14725 | } |
14726 | ||
14727 | /* Implement the "fetch_memtags" target_ops method. */ | |
14728 | ||
14729 | bool | |
14730 | remote_target::fetch_memtags (CORE_ADDR address, size_t len, | |
14731 | gdb::byte_vector &tags, int type) | |
14732 | { | |
2c2e7f87 LM |
14733 | /* Make sure the qMemTags packet is supported. */ |
14734 | if (!remote_memory_tagging_p ()) | |
14735 | gdb_assert_not_reached ("remote fetch_memtags called with packet disabled"); | |
14736 | ||
14737 | struct remote_state *rs = get_remote_state (); | |
14738 | ||
14739 | create_fetch_memtags_request (rs->buf, address, len, type); | |
14740 | ||
14741 | putpkt (rs->buf); | |
14742 | getpkt (&rs->buf, 0); | |
14743 | ||
14744 | return parse_fetch_memtags_reply (rs->buf, tags); | |
dbe692af LM |
14745 | } |
14746 | ||
14747 | /* Implement the "store_memtags" target_ops method. */ | |
14748 | ||
14749 | bool | |
14750 | remote_target::store_memtags (CORE_ADDR address, size_t len, | |
14751 | const gdb::byte_vector &tags, int type) | |
14752 | { | |
2c2e7f87 LM |
14753 | /* Make sure the QMemTags packet is supported. */ |
14754 | if (!remote_memory_tagging_p ()) | |
14755 | gdb_assert_not_reached ("remote store_memtags called with packet disabled"); | |
14756 | ||
14757 | struct remote_state *rs = get_remote_state (); | |
14758 | ||
14759 | create_store_memtags_request (rs->buf, address, len, type, tags); | |
14760 | ||
14761 | putpkt (rs->buf); | |
14762 | getpkt (&rs->buf, 0); | |
14763 | ||
14764 | /* Verify if the request was successful. */ | |
14765 | return packet_check_result (rs->buf.data ()) == PACKET_OK; | |
dbe692af LM |
14766 | } |
14767 | ||
c39ebbf4 TV |
14768 | /* Return true if remote target T is non-stop. */ |
14769 | ||
14770 | bool | |
14771 | remote_target_is_non_stop_p (remote_target *t) | |
14772 | { | |
14773 | scoped_restore_current_thread restore_thread; | |
14774 | switch_to_target_no_thread (t); | |
14775 | ||
14776 | return target_is_non_stop_p (); | |
14777 | } | |
14778 | ||
754487e2 LM |
14779 | #if GDB_SELF_TEST |
14780 | ||
14781 | namespace selftests { | |
14782 | ||
14783 | static void | |
14784 | test_memory_tagging_functions () | |
14785 | { | |
14786 | remote_target remote; | |
14787 | ||
14788 | struct packet_config *config | |
14789 | = &remote_protocol_packets[PACKET_memory_tagging_feature]; | |
14790 | ||
14791 | scoped_restore restore_memtag_support_ | |
14792 | = make_scoped_restore (&config->support); | |
14793 | ||
14794 | /* Test memory tagging packet support. */ | |
14795 | config->support = PACKET_SUPPORT_UNKNOWN; | |
14796 | SELF_CHECK (remote.supports_memory_tagging () == false); | |
14797 | config->support = PACKET_DISABLE; | |
14798 | SELF_CHECK (remote.supports_memory_tagging () == false); | |
14799 | config->support = PACKET_ENABLE; | |
14800 | SELF_CHECK (remote.supports_memory_tagging () == true); | |
14801 | ||
14802 | /* Setup testing. */ | |
14803 | gdb::char_vector packet; | |
14804 | gdb::byte_vector tags, bv; | |
14805 | std::string expected, reply; | |
14806 | packet.resize (32000); | |
14807 | ||
14808 | /* Test creating a qMemTags request. */ | |
14809 | ||
14810 | expected = "qMemTags:0,0:0"; | |
14811 | create_fetch_memtags_request (packet, 0x0, 0x0, 0); | |
14812 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
14813 | ||
14814 | expected = "qMemTags:deadbeef,10:1"; | |
14815 | create_fetch_memtags_request (packet, 0xdeadbeef, 16, 1); | |
14816 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
14817 | ||
14818 | /* Test parsing a qMemTags reply. */ | |
14819 | ||
14820 | /* Error reply, tags vector unmodified. */ | |
14821 | reply = "E00"; | |
14822 | strcpy (packet.data (), reply.c_str ()); | |
14823 | tags.resize (0); | |
14824 | SELF_CHECK (parse_fetch_memtags_reply (packet, tags) == false); | |
14825 | SELF_CHECK (tags.size () == 0); | |
14826 | ||
14827 | /* Valid reply, tags vector updated. */ | |
14828 | tags.resize (0); | |
14829 | bv.resize (0); | |
14830 | ||
14831 | for (int i = 0; i < 5; i++) | |
14832 | bv.push_back (i); | |
14833 | ||
14834 | reply = "m" + bin2hex (bv.data (), bv.size ()); | |
14835 | strcpy (packet.data (), reply.c_str ()); | |
14836 | ||
14837 | SELF_CHECK (parse_fetch_memtags_reply (packet, tags) == true); | |
14838 | SELF_CHECK (tags.size () == 5); | |
14839 | ||
14840 | for (int i = 0; i < 5; i++) | |
14841 | SELF_CHECK (tags[i] == i); | |
14842 | ||
14843 | /* Test creating a QMemTags request. */ | |
14844 | ||
14845 | /* Empty tag data. */ | |
14846 | tags.resize (0); | |
14847 | expected = "QMemTags:0,0:0:"; | |
14848 | create_store_memtags_request (packet, 0x0, 0x0, 0, tags); | |
14849 | SELF_CHECK (memcmp (packet.data (), expected.c_str (), | |
14850 | expected.length ()) == 0); | |
14851 | ||
14852 | /* Non-empty tag data. */ | |
14853 | tags.resize (0); | |
14854 | for (int i = 0; i < 5; i++) | |
14855 | tags.push_back (i); | |
14856 | expected = "QMemTags:deadbeef,ff:1:0001020304"; | |
14857 | create_store_memtags_request (packet, 0xdeadbeef, 255, 1, tags); | |
14858 | SELF_CHECK (memcmp (packet.data (), expected.c_str (), | |
14859 | expected.length ()) == 0); | |
14860 | } | |
14861 | ||
14862 | } // namespace selftests | |
14863 | #endif /* GDB_SELF_TEST */ | |
14864 | ||
6c265988 | 14865 | void _initialize_remote (); |
c906108c | 14866 | void |
6c265988 | 14867 | _initialize_remote () |
c906108c | 14868 | { |
0f71a2f6 | 14869 | /* architecture specific data */ |
29709017 DJ |
14870 | remote_g_packet_data_handle = |
14871 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14872 | |
d9f719f1 PA |
14873 | add_target (remote_target_info, remote_target::open); |
14874 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 14875 | |
dc8acb97 | 14876 | /* Hook into new objfile notification. */ |
c90e7d63 | 14877 | gdb::observers::new_objfile.attach (remote_new_objfile, "remote"); |
dc8acb97 | 14878 | |
c906108c SS |
14879 | #if 0 |
14880 | init_remote_threadtests (); | |
14881 | #endif | |
14882 | ||
23860348 | 14883 | /* set/show remote ... */ |
d471ea57 | 14884 | |
0743fc83 | 14885 | add_basic_prefix_cmd ("remote", class_maintenance, _("\ |
590042fc | 14886 | Remote protocol specific variables.\n\ |
5a2468f5 | 14887 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14888 | the packets being used."), |
2f822da5 | 14889 | &remote_set_cmdlist, |
0743fc83 | 14890 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 14891 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
590042fc | 14892 | Remote protocol specific variables.\n\ |
5a2468f5 | 14893 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14894 | the packets being used."), |
2f822da5 | 14895 | &remote_show_cmdlist, |
23860348 | 14896 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14897 | |
1a966eab AC |
14898 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14899 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14900 | Argument is a single section name (default: all loaded sections).\n\ |
14901 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14902 | &cmdlist); |
14903 | ||
1a966eab AC |
14904 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14905 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14906 | maintenance packet TEXT\n\ |
14907 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14908 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14909 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14910 | terminating `#' character and checksum."), |
c906108c SS |
14911 | &maintenancelist); |
14912 | ||
9f260536 SM |
14913 | set_show_commands remotebreak_cmds |
14914 | = add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ | |
7915a72c AC |
14915 | Set whether to send break if interrupted."), _("\ |
14916 | Show whether to send break if interrupted."), _("\ | |
14917 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9f260536 SM |
14918 | set_remotebreak, show_remotebreak, |
14919 | &setlist, &showlist); | |
14920 | deprecate_cmd (remotebreak_cmds.set, "set remote interrupt-sequence"); | |
14921 | deprecate_cmd (remotebreak_cmds.show, "show remote interrupt-sequence"); | |
9a7071a8 JB |
14922 | |
14923 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14924 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14925 | _("\ | |
9a7071a8 JB |
14926 | Set interrupt sequence to remote target."), _("\ |
14927 | Show interrupt sequence to remote target."), _("\ | |
14928 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14929 | NULL, show_interrupt_sequence, | |
14930 | &remote_set_cmdlist, | |
14931 | &remote_show_cmdlist); | |
14932 | ||
14933 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14934 | &interrupt_on_connect, _("\ | |
590042fc PW |
14935 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ |
14936 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ | |
9a7071a8 JB |
14937 | If set, interrupt sequence is sent to remote target."), |
14938 | NULL, NULL, | |
14939 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14940 | |
23860348 | 14941 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14942 | |
1a966eab AC |
14943 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14944 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14945 | &setlist); |
1a966eab AC |
14946 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14947 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14948 | &showlist); |
14949 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14950 | set_memory_write_packet_size, _("\ |
14951 | Set the maximum number of bytes per memory-write packet.\n\ | |
14952 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14953 | default packet size. The actual limit is further reduced\n\ | |
14954 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14955 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14956 | &remote_set_cmdlist); |
14957 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14958 | set_memory_read_packet_size, _("\ |
14959 | Set the maximum number of bytes per memory-read packet.\n\ | |
14960 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14961 | default packet size. The actual limit is further reduced\n\ | |
14962 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14963 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14964 | &remote_set_cmdlist); |
14965 | add_cmd ("memory-write-packet-size", no_class, | |
14966 | show_memory_write_packet_size, | |
1a966eab | 14967 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14968 | &remote_show_cmdlist); |
14969 | add_cmd ("memory-read-packet-size", no_class, | |
14970 | show_memory_read_packet_size, | |
1a966eab | 14971 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14972 | &remote_show_cmdlist); |
c906108c | 14973 | |
055303e2 | 14974 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14975 | &remote_hw_watchpoint_limit, _("\ |
14976 | Set the maximum number of target hardware watchpoints."), _("\ | |
14977 | Show the maximum number of target hardware watchpoints."), _("\ | |
055303e2 AB |
14978 | Specify \"unlimited\" for unlimited hardware watchpoints."), |
14979 | NULL, show_hardware_watchpoint_limit, | |
14980 | &remote_set_cmdlist, | |
14981 | &remote_show_cmdlist); | |
14982 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-length-limit", | |
14983 | no_class, | |
480a3f21 PW |
14984 | &remote_hw_watchpoint_length_limit, _("\ |
14985 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14986 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
055303e2 AB |
14987 | Specify \"unlimited\" to allow watchpoints of unlimited size."), |
14988 | NULL, show_hardware_watchpoint_length_limit, | |
480a3f21 | 14989 | &remote_set_cmdlist, &remote_show_cmdlist); |
055303e2 | 14990 | add_setshow_zuinteger_unlimited_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14991 | &remote_hw_breakpoint_limit, _("\ |
14992 | Set the maximum number of target hardware breakpoints."), _("\ | |
14993 | Show the maximum number of target hardware breakpoints."), _("\ | |
055303e2 AB |
14994 | Specify \"unlimited\" for unlimited hardware breakpoints."), |
14995 | NULL, show_hardware_breakpoint_limit, | |
b3f42336 | 14996 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14997 | |
1b493192 PA |
14998 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14999 | &remote_address_size, _("\ | |
4d28ad1e AC |
15000 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
15001 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
15002 | NULL, |
15003 | NULL, /* FIXME: i18n: */ | |
15004 | &setlist, &showlist); | |
c906108c | 15005 | |
ca4f7f8b PA |
15006 | init_all_packet_configs (); |
15007 | ||
444abaca | 15008 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 15009 | "X", "binary-download", 1); |
0f71a2f6 | 15010 | |
444abaca | 15011 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 15012 | "vCont", "verbose-resume", 0); |
506fb367 | 15013 | |
89be2091 DJ |
15014 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
15015 | "QPassSignals", "pass-signals", 0); | |
15016 | ||
82075af2 JS |
15017 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
15018 | "QCatchSyscalls", "catch-syscalls", 0); | |
15019 | ||
9b224c5e PA |
15020 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
15021 | "QProgramSignals", "program-signals", 0); | |
15022 | ||
bc3b087d SDJ |
15023 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
15024 | "QSetWorkingDir", "set-working-dir", 0); | |
15025 | ||
aefd8b33 SDJ |
15026 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
15027 | "QStartupWithShell", "startup-with-shell", 0); | |
15028 | ||
0a2dde4a SDJ |
15029 | add_packet_config_cmd (&remote_protocol_packets |
15030 | [PACKET_QEnvironmentHexEncoded], | |
15031 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
15032 | 0); | |
15033 | ||
15034 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
15035 | "QEnvironmentReset", "environment-reset", | |
15036 | 0); | |
15037 | ||
15038 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
15039 | "QEnvironmentUnset", "environment-unset", | |
15040 | 0); | |
15041 | ||
444abaca | 15042 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 15043 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 15044 | |
444abaca | 15045 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 15046 | "P", "set-register", 1); |
d471ea57 | 15047 | |
444abaca | 15048 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 15049 | "p", "fetch-register", 1); |
b96ec7ac | 15050 | |
444abaca | 15051 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 15052 | "Z0", "software-breakpoint", 0); |
d471ea57 | 15053 | |
444abaca | 15054 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 15055 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 15056 | |
444abaca | 15057 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 15058 | "Z2", "write-watchpoint", 0); |
d471ea57 | 15059 | |
444abaca | 15060 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 15061 | "Z3", "read-watchpoint", 0); |
d471ea57 | 15062 | |
444abaca | 15063 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 15064 | "Z4", "access-watchpoint", 0); |
d471ea57 | 15065 | |
0876f84a DJ |
15066 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
15067 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 15068 | |
c78fa86a GB |
15069 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
15070 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
15071 | ||
23181151 DJ |
15072 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
15073 | "qXfer:features:read", "target-features", 0); | |
15074 | ||
cfa9d6d9 DJ |
15075 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
15076 | "qXfer:libraries:read", "library-info", 0); | |
15077 | ||
2268b414 JK |
15078 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
15079 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
15080 | ||
fd79ecee DJ |
15081 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
15082 | "qXfer:memory-map:read", "memory-map", 0); | |
15083 | ||
07e059b5 | 15084 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
dda83cd7 | 15085 | "qXfer:osdata:read", "osdata", 0); |
07e059b5 | 15086 | |
dc146f7c VP |
15087 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
15088 | "qXfer:threads:read", "threads", 0); | |
15089 | ||
4aa995e1 | 15090 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
dda83cd7 | 15091 | "qXfer:siginfo:read", "read-siginfo-object", 0); |
4aa995e1 PA |
15092 | |
15093 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
dda83cd7 | 15094 | "qXfer:siginfo:write", "write-siginfo-object", 0); |
4aa995e1 | 15095 | |
b3b9301e PA |
15096 | add_packet_config_cmd |
15097 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 15098 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 15099 | |
169081d0 TG |
15100 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
15101 | "qXfer:uib:read", "unwind-info-block", 0); | |
15102 | ||
444abaca | 15103 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 15104 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
15105 | 0); |
15106 | ||
711e434b PM |
15107 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
15108 | "qGetTIBAddr", "get-thread-information-block-address", | |
15109 | 0); | |
15110 | ||
40ab02ce MS |
15111 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
15112 | "bc", "reverse-continue", 0); | |
15113 | ||
15114 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
15115 | "bs", "reverse-step", 0); | |
15116 | ||
be2a5f71 DJ |
15117 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
15118 | "qSupported", "supported-packets", 0); | |
15119 | ||
08388c79 DE |
15120 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
15121 | "qSearch:memory", "search-memory", 0); | |
15122 | ||
bd3eecc3 PA |
15123 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
15124 | "qTStatus", "trace-status", 0); | |
15125 | ||
15a201c8 GB |
15126 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
15127 | "vFile:setfs", "hostio-setfs", 0); | |
15128 | ||
a6b151f1 DJ |
15129 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
15130 | "vFile:open", "hostio-open", 0); | |
15131 | ||
15132 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
15133 | "vFile:pread", "hostio-pread", 0); | |
15134 | ||
15135 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
15136 | "vFile:pwrite", "hostio-pwrite", 0); | |
15137 | ||
15138 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
15139 | "vFile:close", "hostio-close", 0); | |
15140 | ||
15141 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
15142 | "vFile:unlink", "hostio-unlink", 0); | |
15143 | ||
b9e7b9c3 UW |
15144 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
15145 | "vFile:readlink", "hostio-readlink", 0); | |
15146 | ||
0a93529c GB |
15147 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
15148 | "vFile:fstat", "hostio-fstat", 0); | |
15149 | ||
2d717e4f DJ |
15150 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
15151 | "vAttach", "attach", 0); | |
15152 | ||
15153 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
15154 | "vRun", "run", 0); | |
15155 | ||
a6f3e723 SL |
15156 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
15157 | "QStartNoAckMode", "noack", 0); | |
15158 | ||
82f73884 PA |
15159 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
15160 | "vKill", "kill", 0); | |
15161 | ||
0b16c5cf PA |
15162 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
15163 | "qAttached", "query-attached", 0); | |
15164 | ||
782b2b07 | 15165 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
15166 | "ConditionalTracepoints", |
15167 | "conditional-tracepoints", 0); | |
3788aec7 LM |
15168 | |
15169 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
15170 | "ConditionalBreakpoints", | |
15171 | "conditional-breakpoints", 0); | |
15172 | ||
d3ce09f5 SS |
15173 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
15174 | "BreakpointCommands", | |
15175 | "breakpoint-commands", 0); | |
15176 | ||
7a697b8d SS |
15177 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
15178 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 15179 | |
409873ef SS |
15180 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
15181 | "TracepointSource", "TracepointSource", 0); | |
15182 | ||
d914c394 SS |
15183 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
15184 | "QAllow", "allow", 0); | |
15185 | ||
0fb4aa4b PA |
15186 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
15187 | "StaticTracepoints", "static-tracepoints", 0); | |
15188 | ||
1e4d1764 YQ |
15189 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
15190 | "InstallInTrace", "install-in-trace", 0); | |
15191 | ||
0fb4aa4b | 15192 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
dda83cd7 | 15193 | "qXfer:statictrace:read", "read-sdata-object", 0); |
0fb4aa4b | 15194 | |
78d85199 YQ |
15195 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
15196 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
15197 | ||
03583c20 UW |
15198 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
15199 | "QDisableRandomization", "disable-randomization", 0); | |
15200 | ||
d1feda86 YQ |
15201 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
15202 | "QAgent", "agent", 0); | |
15203 | ||
f6f899bf HAQ |
15204 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
15205 | "QTBuffer:size", "trace-buffer-size", 0); | |
15206 | ||
9accd112 MM |
15207 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
15208 | "Qbtrace:off", "disable-btrace", 0); | |
15209 | ||
15210 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
15211 | "Qbtrace:bts", "enable-btrace-bts", 0); |
15212 | ||
15213 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
15214 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
15215 | |
15216 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
15217 | "qXfer:btrace", "read-btrace", 0); | |
15218 | ||
f4abbc16 MM |
15219 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
15220 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
15221 | ||
d33501a5 MM |
15222 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
15223 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
15224 | ||
73b8c1fd PA |
15225 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
15226 | "multiprocess-feature", "multiprocess-feature", 0); | |
15227 | ||
f7e6eed5 | 15228 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
dda83cd7 | 15229 | "swbreak-feature", "swbreak-feature", 0); |
f7e6eed5 PA |
15230 | |
15231 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
dda83cd7 | 15232 | "hwbreak-feature", "hwbreak-feature", 0); |
f7e6eed5 | 15233 | |
89245bc0 DB |
15234 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
15235 | "fork-event-feature", "fork-event-feature", 0); | |
15236 | ||
15237 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
15238 | "vfork-event-feature", "vfork-event-feature", 0); | |
15239 | ||
b20a6524 MM |
15240 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
15241 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
15242 | ||
750ce8d1 YQ |
15243 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
15244 | "vContSupported", "verbose-resume-supported", 0); | |
15245 | ||
94585166 DB |
15246 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
15247 | "exec-event-feature", "exec-event-feature", 0); | |
15248 | ||
de979965 PA |
15249 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
15250 | "vCtrlC", "ctrl-c", 0); | |
15251 | ||
65706a29 PA |
15252 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
15253 | "QThreadEvents", "thread-events", 0); | |
15254 | ||
f2faf941 PA |
15255 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
15256 | "N stop reply", "no-resumed-stop-reply", 0); | |
15257 | ||
2c2e7f87 LM |
15258 | add_packet_config_cmd (&remote_protocol_packets[PACKET_memory_tagging_feature], |
15259 | "memory-tagging-feature", "memory-tagging-feature", 0); | |
15260 | ||
0b736949 DB |
15261 | /* Assert that we've registered "set remote foo-packet" commands |
15262 | for all packet configs. */ | |
ca4f7f8b PA |
15263 | { |
15264 | int i; | |
15265 | ||
15266 | for (i = 0; i < PACKET_MAX; i++) | |
15267 | { | |
15268 | /* Ideally all configs would have a command associated. Some | |
15269 | still don't though. */ | |
15270 | int excepted; | |
15271 | ||
15272 | switch (i) | |
15273 | { | |
15274 | case PACKET_QNonStop: | |
ca4f7f8b PA |
15275 | case PACKET_EnableDisableTracepoints_feature: |
15276 | case PACKET_tracenz_feature: | |
15277 | case PACKET_DisconnectedTracing_feature: | |
15278 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
15279 | case PACKET_qCRC: |
15280 | /* Additions to this list need to be well justified: | |
15281 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
15282 | excepted = 1; |
15283 | break; | |
15284 | default: | |
15285 | excepted = 0; | |
15286 | break; | |
15287 | } | |
15288 | ||
15289 | /* This catches both forgetting to add a config command, and | |
15290 | forgetting to remove a packet from the exception list. */ | |
15291 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
15292 | } | |
15293 | } | |
15294 | ||
37a105a1 DJ |
15295 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
15296 | Z sub-packet has its own set and show commands, but users may | |
15297 | have sets to this variable in their .gdbinit files (or in their | |
15298 | documentation). */ | |
e9e68a56 | 15299 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c | 15300 | &remote_Z_packet_detect, _("\ |
590042fc PW |
15301 | Set use of remote protocol `Z' packets."), _("\ |
15302 | Show use of remote protocol `Z' packets."), _("\ | |
3b64bf98 | 15303 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 15304 | packets."), |
e9e68a56 | 15305 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
15306 | show_remote_protocol_Z_packet_cmd, |
15307 | /* FIXME: i18n: Use of remote protocol | |
15308 | `Z' packets is %s. */ | |
e9e68a56 | 15309 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 15310 | |
0743fc83 | 15311 | add_basic_prefix_cmd ("remote", class_files, _("\ |
590042fc | 15312 | Manipulate files on the remote system.\n\ |
a6b151f1 | 15313 | Transfer files to and from the remote target system."), |
2f822da5 | 15314 | &remote_cmdlist, |
0743fc83 | 15315 | 0 /* allow-unknown */, &cmdlist); |
a6b151f1 DJ |
15316 | |
15317 | add_cmd ("put", class_files, remote_put_command, | |
15318 | _("Copy a local file to the remote system."), | |
15319 | &remote_cmdlist); | |
15320 | ||
15321 | add_cmd ("get", class_files, remote_get_command, | |
15322 | _("Copy a remote file to the local system."), | |
15323 | &remote_cmdlist); | |
15324 | ||
15325 | add_cmd ("delete", class_files, remote_delete_command, | |
15326 | _("Delete a remote file."), | |
15327 | &remote_cmdlist); | |
15328 | ||
2d717e4f | 15329 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 15330 | &remote_exec_file_var, _("\ |
590042fc PW |
15331 | Set the remote pathname for \"run\"."), _("\ |
15332 | Show the remote pathname for \"run\"."), NULL, | |
94585166 DB |
15333 | set_remote_exec_file, |
15334 | show_remote_exec_file, | |
15335 | &remote_set_cmdlist, | |
15336 | &remote_show_cmdlist); | |
2d717e4f | 15337 | |
c1e36e3e PA |
15338 | add_setshow_boolean_cmd ("range-stepping", class_run, |
15339 | &use_range_stepping, _("\ | |
15340 | Enable or disable range stepping."), _("\ | |
15341 | Show whether target-assisted range stepping is enabled."), _("\ | |
15342 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
15343 | tells the target to step the corresponding range of addresses itself instead\n\ | |
15344 | of issuing multiple single-steps. This speeds up source level\n\ | |
15345 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
15346 | stepping is supported by the target. The default is on."), | |
15347 | set_range_stepping, | |
15348 | show_range_stepping, | |
15349 | &setlist, | |
15350 | &showlist); | |
15351 | ||
ed2b7c17 TT |
15352 | add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\ |
15353 | Set watchdog timer."), _("\ | |
15354 | Show watchdog timer."), _("\ | |
15355 | When non-zero, this timeout is used instead of waiting forever for a target\n\ | |
15356 | to finish a low-level step or continue operation. If the specified amount\n\ | |
15357 | of time passes without a response from the target, an error occurs."), | |
15358 | NULL, | |
15359 | show_watchdog, | |
15360 | &setlist, &showlist); | |
15361 | ||
6cc8564b LM |
15362 | add_setshow_zuinteger_unlimited_cmd ("remote-packet-max-chars", no_class, |
15363 | &remote_packet_max_chars, _("\ | |
15364 | Set the maximum number of characters to display for each remote packet."), _("\ | |
15365 | Show the maximum number of characters to display for each remote packet."), _("\ | |
15366 | Specify \"unlimited\" to display all the characters."), | |
15367 | NULL, show_remote_packet_max_chars, | |
15368 | &setdebuglist, &showdebuglist); | |
15369 | ||
02349803 SM |
15370 | add_setshow_boolean_cmd ("remote", no_class, &remote_debug, |
15371 | _("Set debugging of remote protocol."), | |
15372 | _("Show debugging of remote protocol."), | |
15373 | _("\ | |
baf2b57f SM |
15374 | When enabled, each packet sent or received with the remote target\n\ |
15375 | is displayed."), | |
02349803 SM |
15376 | NULL, |
15377 | show_remote_debug, | |
15378 | &setdebuglist, &showdebuglist); | |
baf2b57f SM |
15379 | |
15380 | add_setshow_zuinteger_unlimited_cmd ("remotetimeout", no_class, | |
15381 | &remote_timeout, _("\ | |
15382 | Set timeout limit to wait for target to respond."), _("\ | |
15383 | Show timeout limit to wait for target to respond."), _("\ | |
15384 | This value is used to set the time limit for gdb to wait for a response\n\ | |
15385 | from the target."), | |
15386 | NULL, | |
15387 | show_remote_timeout, | |
15388 | &setlist, &showlist); | |
15389 | ||
449092f6 | 15390 | /* Eventually initialize fileio. See fileio.c */ |
3f4d92eb | 15391 | initialize_remote_fileio (&remote_set_cmdlist, &remote_show_cmdlist); |
754487e2 LM |
15392 | |
15393 | #if GDB_SELF_TEST | |
15394 | selftests::register_test ("remote_memory_tagging", | |
15395 | selftests::test_memory_tagging_functions); | |
15396 | #endif | |
c906108c | 15397 | } |