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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
3666a048 | 3 | Copyright (C) 1988-2021 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 | ||
00431a78 | 771 | thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing); |
6b8edb51 PA |
772 | |
773 | void btrace_sync_conf (const btrace_config *conf); | |
774 | ||
775 | void remote_btrace_maybe_reopen (); | |
776 | ||
777 | void remove_new_fork_children (threads_listing_context *context); | |
778 | void kill_new_fork_children (int pid); | |
779 | void discard_pending_stop_replies (struct inferior *inf); | |
780 | int stop_reply_queue_length (); | |
781 | ||
782 | void check_pending_events_prevent_wildcard_vcont | |
2f63ec5c | 783 | (bool *may_global_wildcard_vcont); |
6b8edb51 PA |
784 | |
785 | void discard_pending_stop_replies_in_queue (); | |
786 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
787 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
788 | int peek_stop_reply (ptid_t ptid); | |
bb277751 | 789 | void remote_parse_stop_reply (const char *buf, stop_reply *event); |
6b8edb51 PA |
790 | |
791 | void remote_stop_ns (ptid_t ptid); | |
792 | void remote_interrupt_as (); | |
793 | void remote_interrupt_ns (); | |
794 | ||
795 | char *remote_get_noisy_reply (); | |
796 | int remote_query_attached (int pid); | |
9ab8741a | 797 | inferior *remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 PA |
798 | int try_open_exec); |
799 | ||
800 | ptid_t remote_current_thread (ptid_t oldpid); | |
e3b2741b | 801 | ptid_t get_current_thread (const char *wait_status); |
6b8edb51 PA |
802 | |
803 | void set_thread (ptid_t ptid, int gen); | |
804 | void set_general_thread (ptid_t ptid); | |
805 | void set_continue_thread (ptid_t ptid); | |
806 | void set_general_process (); | |
807 | ||
808 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
809 | ||
cecb1912 | 810 | int remote_unpack_thread_info_response (const char *pkt, threadref *expectedref, |
6b8edb51 PA |
811 | gdb_ext_thread_info *info); |
812 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
813 | gdb_ext_thread_info *info); | |
814 | ||
cecb1912 | 815 | int parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
816 | threadref *original_echo, |
817 | threadref *resultlist, | |
818 | int *doneflag); | |
819 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
820 | int result_limit, int *done, int *result_count, | |
821 | threadref *threadlist); | |
822 | ||
823 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
824 | void *context, int looplimit); | |
825 | ||
826 | int remote_get_threads_with_ql (threads_listing_context *context); | |
827 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
828 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
829 | ||
830 | void extended_remote_restart (); | |
831 | ||
832 | void get_offsets (); | |
833 | ||
834 | void remote_check_symbols (); | |
835 | ||
836 | void remote_supported_packet (const struct protocol_feature *feature, | |
837 | enum packet_support support, | |
838 | const char *argument); | |
839 | ||
840 | void remote_query_supported (); | |
841 | ||
842 | void remote_packet_size (const protocol_feature *feature, | |
843 | packet_support support, const char *value); | |
844 | ||
845 | void remote_serial_quit_handler (); | |
846 | ||
847 | void remote_detach_pid (int pid); | |
848 | ||
849 | void remote_vcont_probe (); | |
850 | ||
851 | void remote_resume_with_hc (ptid_t ptid, int step, | |
852 | gdb_signal siggnal); | |
853 | ||
854 | void send_interrupt_sequence (); | |
855 | void interrupt_query (); | |
856 | ||
857 | void remote_notif_get_pending_events (notif_client *nc); | |
858 | ||
859 | int fetch_register_using_p (struct regcache *regcache, | |
860 | packet_reg *reg); | |
861 | int send_g_packet (); | |
862 | void process_g_packet (struct regcache *regcache); | |
863 | void fetch_registers_using_g (struct regcache *regcache); | |
864 | int store_register_using_P (const struct regcache *regcache, | |
865 | packet_reg *reg); | |
866 | void store_registers_using_G (const struct regcache *regcache); | |
867 | ||
868 | void set_remote_traceframe (); | |
869 | ||
870 | void check_binary_download (CORE_ADDR addr); | |
871 | ||
872 | target_xfer_status remote_write_bytes_aux (const char *header, | |
873 | CORE_ADDR memaddr, | |
874 | const gdb_byte *myaddr, | |
875 | ULONGEST len_units, | |
876 | int unit_size, | |
877 | ULONGEST *xfered_len_units, | |
878 | char packet_format, | |
879 | int use_length); | |
880 | ||
881 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
882 | const gdb_byte *myaddr, ULONGEST len, | |
883 | int unit_size, ULONGEST *xfered_len); | |
884 | ||
885 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
886 | ULONGEST len_units, | |
887 | int unit_size, ULONGEST *xfered_len_units); | |
888 | ||
889 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
890 | ULONGEST memaddr, | |
891 | ULONGEST len, | |
892 | int unit_size, | |
893 | ULONGEST *xfered_len); | |
894 | ||
895 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
896 | gdb_byte *myaddr, ULONGEST len, | |
897 | int unit_size, | |
898 | ULONGEST *xfered_len); | |
899 | ||
900 | packet_result remote_send_printf (const char *format, ...) | |
901 | ATTRIBUTE_PRINTF (2, 3); | |
902 | ||
903 | target_xfer_status remote_flash_write (ULONGEST address, | |
904 | ULONGEST length, ULONGEST *xfered_len, | |
905 | const gdb_byte *data); | |
906 | ||
907 | int readchar (int timeout); | |
908 | ||
909 | void remote_serial_write (const char *str, int len); | |
910 | ||
911 | int putpkt (const char *buf); | |
912 | int putpkt_binary (const char *buf, int cnt); | |
913 | ||
8d64371b TT |
914 | int putpkt (const gdb::char_vector &buf) |
915 | { | |
916 | return putpkt (buf.data ()); | |
917 | } | |
918 | ||
6b8edb51 | 919 | void skip_frame (); |
8d64371b TT |
920 | long read_frame (gdb::char_vector *buf_p); |
921 | void getpkt (gdb::char_vector *buf, int forever); | |
922 | int getpkt_or_notif_sane_1 (gdb::char_vector *buf, int forever, | |
6b8edb51 | 923 | int expecting_notif, int *is_notif); |
8d64371b TT |
924 | int getpkt_sane (gdb::char_vector *buf, int forever); |
925 | int getpkt_or_notif_sane (gdb::char_vector *buf, int forever, | |
6b8edb51 PA |
926 | int *is_notif); |
927 | int remote_vkill (int pid); | |
928 | void remote_kill_k (); | |
929 | ||
930 | void extended_remote_disable_randomization (int val); | |
931 | int extended_remote_run (const std::string &args); | |
932 | ||
933 | void send_environment_packet (const char *action, | |
934 | const char *packet, | |
935 | const char *value); | |
936 | ||
937 | void extended_remote_environment_support (); | |
3c69da40 | 938 | void extended_remote_set_inferior_cwd (); |
80152258 | 939 | |
3c69da40 PA |
940 | target_xfer_status remote_write_qxfer (const char *object_name, |
941 | const char *annex, | |
942 | const gdb_byte *writebuf, | |
943 | ULONGEST offset, LONGEST len, | |
944 | ULONGEST *xfered_len, | |
945 | struct packet_config *packet); | |
43c3a0e4 | 946 | |
3c69da40 PA |
947 | target_xfer_status remote_read_qxfer (const char *object_name, |
948 | const char *annex, | |
949 | gdb_byte *readbuf, ULONGEST offset, | |
950 | LONGEST len, | |
951 | ULONGEST *xfered_len, | |
952 | struct packet_config *packet); | |
43c3a0e4 | 953 | |
3c69da40 | 954 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 955 | |
3c69da40 | 956 | bool vcont_r_supported (); |
43c3a0e4 | 957 | |
3c69da40 | 958 | void packet_command (const char *args, int from_tty); |
43c3a0e4 | 959 | |
3c69da40 | 960 | private: /* data fields */ |
43c3a0e4 | 961 | |
3c69da40 PA |
962 | /* The remote state. Don't reference this directly. Use the |
963 | get_remote_state method instead. */ | |
964 | remote_state m_remote_state; | |
43c3a0e4 PA |
965 | }; |
966 | ||
3c69da40 PA |
967 | static const target_info extended_remote_target_info = { |
968 | "extended-remote", | |
969 | N_("Extended remote serial target in gdb-specific protocol"), | |
970 | remote_doc | |
971 | }; | |
ea9c271d | 972 | |
3c69da40 PA |
973 | /* Set up the extended remote target by extending the standard remote |
974 | target and adding to it. */ | |
975 | ||
976 | class extended_remote_target final : public remote_target | |
ea9c271d | 977 | { |
9d6eea31 | 978 | public: |
3c69da40 PA |
979 | const target_info &info () const override |
980 | { return extended_remote_target_info; } | |
9d6eea31 | 981 | |
3c69da40 PA |
982 | /* Open an extended-remote connection. */ |
983 | static void open (const char *, int); | |
de44f5a7 | 984 | |
3c69da40 PA |
985 | bool can_create_inferior () override { return true; } |
986 | void create_inferior (const char *, const std::string &, | |
987 | char **, int) override; | |
9d6eea31 | 988 | |
3c69da40 | 989 | void detach (inferior *, int) override; |
9d6eea31 | 990 | |
3c69da40 PA |
991 | bool can_attach () override { return true; } |
992 | void attach (const char *, int) override; | |
be2a5f71 | 993 | |
3c69da40 PA |
994 | void post_attach (int) override; |
995 | bool supports_disable_randomization () override; | |
996 | }; | |
1e51243a | 997 | |
3c69da40 | 998 | /* Per-program-space data key. */ |
7b4a314f TT |
999 | static const struct program_space_key<char, gdb::xfree_deleter<char>> |
1000 | remote_pspace_data; | |
2d717e4f | 1001 | |
3c69da40 PA |
1002 | /* The variable registered as the control variable used by the |
1003 | remote exec-file commands. While the remote exec-file setting is | |
1004 | per-program-space, the set/show machinery uses this as the | |
1005 | location of the remote exec-file value. */ | |
1006 | static char *remote_exec_file_var; | |
a6f3e723 | 1007 | |
3c69da40 PA |
1008 | /* The size to align memory write packets, when practical. The protocol |
1009 | does not guarantee any alignment, and gdb will generate short | |
1010 | writes and unaligned writes, but even as a best-effort attempt this | |
1011 | can improve bulk transfers. For instance, if a write is misaligned | |
1012 | relative to the target's data bus, the stub may need to make an extra | |
1013 | round trip fetching data from the target. This doesn't make a | |
1014 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 1015 | |
3c69da40 PA |
1016 | The alignment chosen is arbitrary; usually data bus width is |
1017 | important here, not the possibly larger cache line size. */ | |
1018 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 1019 | |
3c69da40 | 1020 | /* Prototypes for local functions. */ |
74531fed | 1021 | |
3c69da40 | 1022 | static int hexnumlen (ULONGEST num); |
782b2b07 | 1023 | |
3c69da40 | 1024 | static int stubhex (int ch); |
5d93a237 | 1025 | |
3c69da40 | 1026 | static int hexnumstr (char *, ULONGEST); |
048094ac | 1027 | |
3c69da40 | 1028 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 1029 | |
3c69da40 | 1030 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1031 | |
3c69da40 | 1032 | static void print_packet (const char *); |
747dc59d | 1033 | |
cecb1912 | 1034 | static int stub_unpack_int (const char *buff, int fieldlength); |
5e4a05c4 | 1035 | |
3c69da40 | 1036 | struct packet_config; |
b73be471 | 1037 | |
3c69da40 | 1038 | static void show_packet_config_cmd (struct packet_config *config); |
280ceea3 | 1039 | |
3c69da40 PA |
1040 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1041 | int from_tty, | |
1042 | struct cmd_list_element *c, | |
1043 | const char *value); | |
8e88304f | 1044 | |
3c69da40 | 1045 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1046 | |
3c69da40 | 1047 | static void remote_async_inferior_event_handler (gdb_client_data); |
b80fafe3 | 1048 | |
eefce37f | 1049 | static bool remote_read_description_p (struct target_ops *target); |
88b496c3 | 1050 | |
05be00a8 | 1051 | static void remote_console_output (const char *msg); |
5965e028 | 1052 | |
3c69da40 | 1053 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1054 | |
5b6d1e4f | 1055 | static void remote_unpush_and_throw (remote_target *target); |
15a201c8 | 1056 | |
3c69da40 | 1057 | /* For "remote". */ |
80152258 | 1058 | |
3c69da40 | 1059 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1060 | |
3c69da40 | 1061 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1062 | |
3c69da40 PA |
1063 | static struct cmd_list_element *remote_set_cmdlist; |
1064 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1065 | |
3c69da40 | 1066 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1067 | |
491144b5 | 1068 | static bool use_range_stepping = true; |
3c69da40 | 1069 | |
c9d22089 SM |
1070 | /* From the remote target's point of view, each thread is in one of these three |
1071 | states. */ | |
1072 | enum class resume_state | |
1073 | { | |
1074 | /* Not resumed - we haven't been asked to resume this thread. */ | |
1075 | NOT_RESUMED, | |
1076 | ||
1077 | /* We have been asked to resume this thread, but haven't sent a vCont action | |
1078 | for it yet. We'll need to consider it next time commit_resume is | |
1079 | called. */ | |
1080 | RESUMED_PENDING_VCONT, | |
1081 | ||
1082 | /* We have been asked to resume this thread, and we have sent a vCont action | |
1083 | for it. */ | |
1084 | RESUMED, | |
1085 | }; | |
1086 | ||
1087 | /* Information about a thread's pending vCont-resume. Used when a thread is in | |
1088 | the remote_resume_state::RESUMED_PENDING_VCONT state. remote_target::resume | |
1089 | stores this information which is then picked up by | |
1090 | remote_target::commit_resume to know which is the proper action for this | |
1091 | thread to include in the vCont packet. */ | |
1092 | struct resumed_pending_vcont_info | |
1093 | { | |
1094 | /* True if the last resume call for this thread was a step request, false | |
1095 | if a continue request. */ | |
1096 | bool step; | |
1097 | ||
1098 | /* The signal specified in the last resume call for this thread. */ | |
1099 | gdb_signal sig; | |
1100 | }; | |
1101 | ||
7aabaf9d SM |
1102 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1103 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1104 | { |
7aabaf9d SM |
1105 | std::string extra; |
1106 | std::string name; | |
1107 | int core = -1; | |
799a2abe | 1108 | |
f6327dcb KB |
1109 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1110 | sequence of bytes. */ | |
7aabaf9d | 1111 | gdb::byte_vector thread_handle; |
f6327dcb | 1112 | |
799a2abe | 1113 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1114 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1115 | |
1116 | /* This is set to the data address of the access causing the target | |
1117 | to stop for a watchpoint. */ | |
7aabaf9d | 1118 | CORE_ADDR watch_data_address = 0; |
85ad3aaf | 1119 | |
c9d22089 | 1120 | /* Get the thread's resume state. */ |
a6c11cbb | 1121 | enum resume_state get_resume_state () const |
c9d22089 SM |
1122 | { |
1123 | return m_resume_state; | |
1124 | } | |
1125 | ||
1126 | /* Put the thread in the NOT_RESUMED state. */ | |
1127 | void set_not_resumed () | |
1128 | { | |
1129 | m_resume_state = resume_state::NOT_RESUMED; | |
1130 | } | |
85ad3aaf | 1131 | |
c9d22089 SM |
1132 | /* Put the thread in the RESUMED_PENDING_VCONT state. */ |
1133 | void set_resumed_pending_vcont (bool step, gdb_signal sig) | |
1134 | { | |
1135 | m_resume_state = resume_state::RESUMED_PENDING_VCONT; | |
1136 | m_resumed_pending_vcont_info.step = step; | |
1137 | m_resumed_pending_vcont_info.sig = sig; | |
1138 | } | |
85ad3aaf | 1139 | |
c9d22089 | 1140 | /* Get the information this thread's pending vCont-resumption. |
85ad3aaf | 1141 | |
c9d22089 SM |
1142 | Must only be called if the thread is in the RESUMED_PENDING_VCONT resume |
1143 | state. */ | |
1144 | const struct resumed_pending_vcont_info &resumed_pending_vcont_info () const | |
1145 | { | |
1146 | gdb_assert (m_resume_state == resume_state::RESUMED_PENDING_VCONT); | |
1147 | ||
1148 | return m_resumed_pending_vcont_info; | |
1149 | } | |
1150 | ||
1151 | /* Put the thread in the VCONT_RESUMED state. */ | |
1152 | void set_resumed () | |
1153 | { | |
1154 | m_resume_state = resume_state::RESUMED; | |
1155 | } | |
1156 | ||
1157 | private: | |
1158 | /* Resume state for this thread. This is used to implement vCont action | |
1159 | coalescing (only when the target operates in non-stop mode). | |
1160 | ||
1161 | remote_target::resume moves the thread to the RESUMED_PENDING_VCONT state, | |
1162 | which notes that this thread must be considered in the next commit_resume | |
1163 | call. | |
1164 | ||
1165 | remote_target::commit_resume sends a vCont packet with actions for the | |
1166 | threads in the RESUMED_PENDING_VCONT state and moves them to the | |
1167 | VCONT_RESUMED state. | |
1168 | ||
1169 | When reporting a stop to the core for a thread, that thread is moved back | |
1170 | to the NOT_RESUMED state. */ | |
1171 | enum resume_state m_resume_state = resume_state::NOT_RESUMED; | |
1172 | ||
1173 | /* Extra info used if the thread is in the RESUMED_PENDING_VCONT state. */ | |
1174 | struct resumed_pending_vcont_info m_resumed_pending_vcont_info; | |
dc146f7c VP |
1175 | }; |
1176 | ||
de44f5a7 | 1177 | remote_state::remote_state () |
8d64371b | 1178 | : buf (400) |
de44f5a7 | 1179 | { |
de44f5a7 PA |
1180 | } |
1181 | ||
1182 | remote_state::~remote_state () | |
1183 | { | |
1184 | xfree (this->last_pass_packet); | |
1185 | xfree (this->last_program_signals_packet); | |
de44f5a7 PA |
1186 | xfree (this->finished_object); |
1187 | xfree (this->finished_annex); | |
cf792862 TT |
1188 | } |
1189 | ||
35b1e5cc SS |
1190 | /* Utility: generate error from an incoming stub packet. */ |
1191 | static void | |
1192 | trace_error (char *buf) | |
1193 | { | |
1194 | if (*buf++ != 'E') | |
1195 | return; /* not an error msg */ | |
1196 | switch (*buf) | |
1197 | { | |
1198 | case '1': /* malformed packet error */ | |
1199 | if (*++buf == '0') /* general case: */ | |
1200 | error (_("remote.c: error in outgoing packet.")); | |
1201 | else | |
1202 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1203 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1204 | default: |
1205 | error (_("Target returns error code '%s'."), buf); | |
1206 | } | |
1207 | } | |
1208 | ||
1209 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1210 | |
6b8edb51 PA |
1211 | char * |
1212 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1213 | { |
b6bb3468 PA |
1214 | struct remote_state *rs = get_remote_state (); |
1215 | ||
35b1e5cc SS |
1216 | do /* Loop on reply from remote stub. */ |
1217 | { | |
1218 | char *buf; | |
a744cf53 | 1219 | |
0df8b418 | 1220 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b TT |
1221 | getpkt (&rs->buf, 0); |
1222 | buf = rs->buf.data (); | |
ad91cd99 | 1223 | if (buf[0] == 'E') |
35b1e5cc | 1224 | trace_error (buf); |
61012eef | 1225 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1226 | { |
1227 | ULONGEST ul; | |
1228 | CORE_ADDR from, to, org_to; | |
256642e8 | 1229 | const char *p, *pp; |
dde08ee1 | 1230 | int adjusted_size = 0; |
7556d4a4 | 1231 | int relocated = 0; |
dde08ee1 PA |
1232 | |
1233 | p = buf + strlen ("qRelocInsn:"); | |
1234 | pp = unpack_varlen_hex (p, &ul); | |
1235 | if (*pp != ';') | |
cb91c06a | 1236 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1237 | from = ul; |
1238 | ||
1239 | p = pp + 1; | |
a9cbf802 | 1240 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1241 | to = ul; |
1242 | ||
1243 | org_to = to; | |
1244 | ||
a70b8144 | 1245 | try |
dde08ee1 | 1246 | { |
f5656ead | 1247 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 1248 | relocated = 1; |
dde08ee1 | 1249 | } |
230d2906 | 1250 | catch (const gdb_exception &ex) |
7556d4a4 PA |
1251 | { |
1252 | if (ex.error == MEMORY_ERROR) | |
1253 | { | |
1254 | /* Propagate memory errors silently back to the | |
1255 | target. The stub may have limited the range of | |
1256 | addresses we can write to, for example. */ | |
1257 | } | |
1258 | else | |
1259 | { | |
1260 | /* Something unexpectedly bad happened. Be verbose | |
1261 | so we can tell what, and propagate the error back | |
1262 | to the stub, so it doesn't get stuck waiting for | |
1263 | a response. */ | |
1264 | exception_fprintf (gdb_stderr, ex, | |
1265 | _("warning: relocating instruction: ")); | |
1266 | } | |
1267 | putpkt ("E01"); | |
1268 | } | |
1269 | ||
1270 | if (relocated) | |
dde08ee1 PA |
1271 | { |
1272 | adjusted_size = to - org_to; | |
1273 | ||
8d64371b | 1274 | xsnprintf (buf, rs->buf.size (), "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1275 | putpkt (buf); |
1276 | } | |
dde08ee1 | 1277 | } |
ad91cd99 | 1278 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1279 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1280 | else | |
0df8b418 | 1281 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1282 | } |
1283 | while (1); | |
1284 | } | |
3c3bea1c | 1285 | |
9d6eea31 PA |
1286 | struct remote_arch_state * |
1287 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1288 | { |
43c3a0e4 PA |
1289 | remote_arch_state *rsa; |
1290 | ||
1291 | auto it = this->m_arch_states.find (gdbarch); | |
1292 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1293 | { |
43c3a0e4 PA |
1294 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1295 | std::forward_as_tuple (gdbarch), | |
1296 | std::forward_as_tuple (gdbarch)); | |
1297 | rsa = &p.first->second; | |
9d6eea31 PA |
1298 | |
1299 | /* Make sure that the packet buffer is plenty big enough for | |
1300 | this architecture. */ | |
8d64371b TT |
1301 | if (this->buf.size () < rsa->remote_packet_size) |
1302 | this->buf.resize (2 * rsa->remote_packet_size); | |
9d6eea31 | 1303 | } |
43c3a0e4 PA |
1304 | else |
1305 | rsa = &it->second; | |
1306 | ||
1307 | return rsa; | |
d01949b6 AC |
1308 | } |
1309 | ||
0b83947e DJ |
1310 | /* Fetch the global remote target state. */ |
1311 | ||
6b8edb51 PA |
1312 | remote_state * |
1313 | remote_target::get_remote_state () | |
0b83947e DJ |
1314 | { |
1315 | /* Make sure that the remote architecture state has been | |
1316 | initialized, because doing so might reallocate rs->buf. Any | |
1317 | function which calls getpkt also needs to be mindful of changes | |
1318 | to rs->buf, but this call limits the number of places which run | |
1319 | into trouble. */ | |
3c69da40 | 1320 | m_remote_state.get_remote_arch_state (target_gdbarch ()); |
0b83947e | 1321 | |
3c69da40 | 1322 | return &m_remote_state; |
0b83947e DJ |
1323 | } |
1324 | ||
94585166 DB |
1325 | /* Fetch the remote exec-file from the current program space. */ |
1326 | ||
1327 | static const char * | |
1328 | get_remote_exec_file (void) | |
1329 | { | |
1330 | char *remote_exec_file; | |
1331 | ||
7b4a314f | 1332 | remote_exec_file = remote_pspace_data.get (current_program_space); |
94585166 DB |
1333 | if (remote_exec_file == NULL) |
1334 | return ""; | |
1335 | ||
1336 | return remote_exec_file; | |
1337 | } | |
1338 | ||
1339 | /* Set the remote exec file for PSPACE. */ | |
1340 | ||
1341 | static void | |
1342 | set_pspace_remote_exec_file (struct program_space *pspace, | |
7b4a314f | 1343 | const char *remote_exec_file) |
94585166 | 1344 | { |
7b4a314f | 1345 | char *old_file = remote_pspace_data.get (pspace); |
94585166 DB |
1346 | |
1347 | xfree (old_file); | |
7b4a314f | 1348 | remote_pspace_data.set (pspace, xstrdup (remote_exec_file)); |
94585166 DB |
1349 | } |
1350 | ||
1351 | /* The "set/show remote exec-file" set command hook. */ | |
1352 | ||
1353 | static void | |
eb4c3f4a | 1354 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1355 | struct cmd_list_element *c) |
1356 | { | |
1357 | gdb_assert (remote_exec_file_var != NULL); | |
1358 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
1359 | } | |
1360 | ||
1361 | /* The "set/show remote exec-file" show command hook. */ | |
1362 | ||
1363 | static void | |
1364 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1365 | struct cmd_list_element *cmd, const char *value) | |
1366 | { | |
acdf84a6 | 1367 | fprintf_filtered (file, "%s\n", get_remote_exec_file ()); |
94585166 DB |
1368 | } |
1369 | ||
c21236dc PA |
1370 | static int |
1371 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1372 | { |
74ca34ce | 1373 | int regnum, num_remote_regs, offset; |
74ca34ce | 1374 | struct packet_reg **remote_regs; |
ea9c271d | 1375 | |
4a22f64d | 1376 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1377 | { |
c21236dc | 1378 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1379 | |
4a22f64d | 1380 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1381 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1382 | r->pnum = -1; | |
1383 | else | |
1384 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1385 | ||
b323314b | 1386 | r->regnum = regnum; |
74ca34ce DJ |
1387 | } |
1388 | ||
1389 | /* Define the g/G packet format as the contents of each register | |
1390 | with a remote protocol number, in order of ascending protocol | |
1391 | number. */ | |
1392 | ||
224c3ddb | 1393 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1394 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1395 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1396 | regnum++) |
c21236dc PA |
1397 | if (regs[regnum].pnum != -1) |
1398 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1399 | |
39ef2f62 CB |
1400 | std::sort (remote_regs, remote_regs + num_remote_regs, |
1401 | [] (const packet_reg *a, const packet_reg *b) | |
1402 | { return a->pnum < b->pnum; }); | |
74ca34ce DJ |
1403 | |
1404 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1405 | { | |
1406 | remote_regs[regnum]->in_g_packet = 1; | |
1407 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1408 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1409 | } |
1410 | ||
c21236dc PA |
1411 | return offset; |
1412 | } | |
1413 | ||
1414 | /* Given the architecture described by GDBARCH, return the remote | |
1415 | protocol register's number and the register's offset in the g/G | |
1416 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1417 | If the target does not have a mapping for REGNUM, return false, | |
1418 | otherwise, return true. */ | |
1419 | ||
1420 | int | |
1421 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1422 | int *pnum, int *poffset) | |
1423 | { | |
c21236dc PA |
1424 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1425 | ||
b80406ac | 1426 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1427 | |
b80406ac | 1428 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1429 | |
1430 | *pnum = regs[regnum].pnum; | |
1431 | *poffset = regs[regnum].offset; | |
1432 | ||
c21236dc PA |
1433 | return *pnum != -1; |
1434 | } | |
1435 | ||
9d6eea31 | 1436 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1437 | { |
c21236dc PA |
1438 | /* Use the architecture to build a regnum<->pnum table, which will be |
1439 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1440 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1441 | |
74ca34ce DJ |
1442 | /* Record the maximum possible size of the g packet - it may turn out |
1443 | to be smaller. */ | |
9d6eea31 PA |
1444 | this->sizeof_g_packet |
1445 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1446 | |
0df8b418 | 1447 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1448 | remote stubs have a hardwired buffer size of 400 bytes |
1449 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1450 | as the maximum packet-size to ensure that the packet and an extra | |
1451 | NUL character can always fit in the buffer. This stops GDB | |
1452 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1453 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1454 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1455 | |
ea9c271d | 1456 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1457 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1458 | |
1459 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1460 | default, adjust the size accordingly. Remember that each byte is |
1461 | encoded as two characters. 32 is the overhead for the packet | |
1462 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1463 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1464 | little. */ |
9d6eea31 PA |
1465 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1466 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1467 | } |
1468 | ||
6b8edb51 PA |
1469 | /* Get a pointer to the current remote target. If not connected to a |
1470 | remote target, return NULL. */ | |
1471 | ||
1472 | static remote_target * | |
1473 | get_current_remote_target () | |
1474 | { | |
5b6d1e4f | 1475 | target_ops *proc_target = current_inferior ()->process_target (); |
6b8edb51 PA |
1476 | return dynamic_cast<remote_target *> (proc_target); |
1477 | } | |
1478 | ||
ea9c271d DJ |
1479 | /* Return the current allowed size of a remote packet. This is |
1480 | inferred from the current architecture, and should be used to | |
1481 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1482 | long |
1483 | remote_target::get_remote_packet_size () | |
ea9c271d | 1484 | { |
be2a5f71 | 1485 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1486 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1487 | |
be2a5f71 DJ |
1488 | if (rs->explicit_packet_size) |
1489 | return rs->explicit_packet_size; | |
1490 | ||
ea9c271d | 1491 | return rsa->remote_packet_size; |
d01949b6 AC |
1492 | } |
1493 | ||
ad10f812 | 1494 | static struct packet_reg * |
5cd63fda PA |
1495 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1496 | long regnum) | |
ad10f812 | 1497 | { |
5cd63fda | 1498 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1499 | return NULL; |
1500 | else | |
ad10f812 | 1501 | { |
ea9c271d | 1502 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1503 | |
b323314b AC |
1504 | gdb_assert (r->regnum == regnum); |
1505 | return r; | |
ad10f812 | 1506 | } |
ad10f812 AC |
1507 | } |
1508 | ||
1509 | static struct packet_reg * | |
5cd63fda PA |
1510 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1511 | LONGEST pnum) | |
ad10f812 | 1512 | { |
b323314b | 1513 | int i; |
a744cf53 | 1514 | |
5cd63fda | 1515 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1516 | { |
ea9c271d | 1517 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1518 | |
b323314b AC |
1519 | if (r->pnum == pnum) |
1520 | return r; | |
ad10f812 AC |
1521 | } |
1522 | return NULL; | |
d01949b6 AC |
1523 | } |
1524 | ||
9a7071a8 JB |
1525 | /* Allow the user to specify what sequence to send to the remote |
1526 | when he requests a program interruption: Although ^C is usually | |
1527 | what remote systems expect (this is the default, here), it is | |
1528 | sometimes preferable to send a break. On other systems such | |
1529 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1530 | is required in order to interrupt the execution. */ | |
1531 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1532 | const char interrupt_sequence_break[] = "BREAK"; | |
1533 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1534 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1535 | { |
1536 | interrupt_sequence_control_c, | |
1537 | interrupt_sequence_break, | |
1538 | interrupt_sequence_break_g, | |
1539 | NULL | |
1540 | }; | |
1541 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1542 | ||
1543 | static void | |
1544 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1545 | struct cmd_list_element *c, | |
1546 | const char *value) | |
1547 | { | |
1548 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
1549 | fprintf_filtered (file, | |
1550 | _("Send the ASCII ETX character (Ctrl-c) " | |
1551 | "to the remote target to interrupt the " | |
1552 | "execution of the program.\n")); | |
1553 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
1554 | fprintf_filtered (file, | |
1555 | _("send a break signal to the remote target " | |
1556 | "to interrupt the execution of the program.\n")); | |
1557 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
1558 | fprintf_filtered (file, | |
1559 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1560 | "the remote target to interrupt the execution " | |
1561 | "of Linux kernel.\n")); | |
1562 | else | |
1563 | internal_error (__FILE__, __LINE__, | |
1564 | _("Invalid value for interrupt_sequence_mode: %s."), | |
1565 | interrupt_sequence_mode); | |
1566 | } | |
6426a772 | 1567 | |
9a7071a8 JB |
1568 | /* This boolean variable specifies whether interrupt_sequence is sent |
1569 | to the remote target when gdb connects to it. | |
1570 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1571 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
491144b5 | 1572 | static bool interrupt_on_connect = false; |
c906108c | 1573 | |
9a7071a8 JB |
1574 | /* This variable is used to implement the "set/show remotebreak" commands. |
1575 | Since these commands are now deprecated in favor of "set/show remote | |
1576 | interrupt-sequence", it no longer has any effect on the code. */ | |
491144b5 | 1577 | static bool remote_break; |
c906108c | 1578 | |
9a7071a8 | 1579 | static void |
eb4c3f4a | 1580 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1581 | { |
1582 | if (remote_break) | |
1583 | interrupt_sequence_mode = interrupt_sequence_break; | |
1584 | else | |
1585 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1586 | } | |
1587 | ||
1588 | static void | |
1589 | show_remotebreak (struct ui_file *file, int from_tty, | |
1590 | struct cmd_list_element *c, | |
1591 | const char *value) | |
1592 | { | |
1593 | } | |
1594 | ||
c906108c SS |
1595 | /* This variable sets the number of bits in an address that are to be |
1596 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1597 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1598 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1599 | initial implementation of remote.c restricted the address sent in | |
1600 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1601 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1602 | address was never sent. Since fixing this bug may cause a break in | |
85102364 | 1603 | some remote targets this variable is principally provided to |
23860348 | 1604 | facilitate backward compatibility. */ |
c906108c | 1605 | |
883b9c6c | 1606 | static unsigned int remote_address_size; |
c906108c | 1607 | |
11cf8741 | 1608 | \f |
11cf8741 | 1609 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1610 | memory read/write packet. MIN (rsa->remote_packet_size, |
1611 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1612 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1613 | (speed up transfers). The variables ``preferred_*'' (the user |
1614 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1615 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1616 | |
1617 | struct memory_packet_config | |
1618 | { | |
a121b7c1 | 1619 | const char *name; |
11cf8741 JM |
1620 | long size; |
1621 | int fixed_p; | |
1622 | }; | |
1623 | ||
cc0be08f PA |
1624 | /* The default max memory-write-packet-size, when the setting is |
1625 | "fixed". The 16k is historical. (It came from older GDB's using | |
1626 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1627 | don't cope very well with large alloca calls.) */ | |
1628 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1629 | |
1630 | /* The minimum remote packet size for memory transfers. Ensures we | |
1631 | can write at least one byte. */ | |
1632 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1633 | ||
cc0be08f PA |
1634 | /* Get the memory packet size, assuming it is fixed. */ |
1635 | ||
1636 | static long | |
1637 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1638 | { | |
1639 | gdb_assert (config->fixed_p); | |
1640 | ||
1641 | if (config->size <= 0) | |
1642 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1643 | else | |
1644 | return config->size; | |
1645 | } | |
1646 | ||
11cf8741 JM |
1647 | /* Compute the current size of a read/write packet. Since this makes |
1648 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1649 | ||
6b8edb51 PA |
1650 | long |
1651 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 1652 | { |
d01949b6 | 1653 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1654 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1655 | |
11cf8741 JM |
1656 | long what_they_get; |
1657 | if (config->fixed_p) | |
cc0be08f | 1658 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1659 | else |
1660 | { | |
ea9c271d | 1661 | what_they_get = get_remote_packet_size (); |
23860348 | 1662 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1663 | if (config->size > 0 |
1664 | && what_they_get > config->size) | |
1665 | what_they_get = config->size; | |
be2a5f71 DJ |
1666 | |
1667 | /* Limit it to the size of the targets ``g'' response unless we have | |
1668 | permission from the stub to use a larger packet size. */ | |
1669 | if (rs->explicit_packet_size == 0 | |
1670 | && rsa->actual_register_packet_size > 0 | |
1671 | && what_they_get > rsa->actual_register_packet_size) | |
1672 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1673 | } |
a5c0808e PA |
1674 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1675 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1676 | |
1677 | /* Make sure there is room in the global buffer for this packet | |
1678 | (including its trailing NUL byte). */ | |
8d64371b TT |
1679 | if (rs->buf.size () < what_they_get + 1) |
1680 | rs->buf.resize (2 * what_they_get); | |
6d820c5c | 1681 | |
11cf8741 JM |
1682 | return what_they_get; |
1683 | } | |
1684 | ||
0df8b418 | 1685 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1686 | something really big then do a sanity check. */ |
11cf8741 JM |
1687 | |
1688 | static void | |
ac88e2de | 1689 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1690 | { |
1691 | int fixed_p = config->fixed_p; | |
1692 | long size = config->size; | |
a744cf53 | 1693 | |
11cf8741 | 1694 | if (args == NULL) |
8a3fe4f8 | 1695 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1696 | else if (strcmp (args, "hard") == 0 |
1697 | || strcmp (args, "fixed") == 0) | |
1698 | fixed_p = 1; | |
1699 | else if (strcmp (args, "soft") == 0 | |
1700 | || strcmp (args, "limit") == 0) | |
1701 | fixed_p = 0; | |
1702 | else | |
1703 | { | |
1704 | char *end; | |
a744cf53 | 1705 | |
11cf8741 JM |
1706 | size = strtoul (args, &end, 0); |
1707 | if (args == end) | |
8a3fe4f8 | 1708 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1709 | |
1710 | /* Instead of explicitly capping the size of a packet to or | |
1711 | disallowing it, the user is allowed to set the size to | |
1712 | something arbitrarily large. */ | |
11cf8741 | 1713 | } |
a5c0808e | 1714 | |
23860348 | 1715 | /* Extra checks? */ |
11cf8741 JM |
1716 | if (fixed_p && !config->fixed_p) |
1717 | { | |
cc0be08f PA |
1718 | /* So that the query shows the correct value. */ |
1719 | long query_size = (size <= 0 | |
1720 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
1721 | : size); | |
1722 | ||
e2e0b3e5 AC |
1723 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1724 | "of %ld bytes. Change the packet size? "), | |
cc0be08f | 1725 | config->name, query_size)) |
8a3fe4f8 | 1726 | error (_("Packet size not changed.")); |
11cf8741 | 1727 | } |
23860348 | 1728 | /* Update the config. */ |
11cf8741 JM |
1729 | config->fixed_p = fixed_p; |
1730 | config->size = size; | |
1731 | } | |
1732 | ||
1733 | static void | |
1734 | show_memory_packet_size (struct memory_packet_config *config) | |
1735 | { | |
cc0be08f PA |
1736 | if (config->size == 0) |
1737 | printf_filtered (_("The %s is 0 (default). "), config->name); | |
1738 | else | |
1739 | printf_filtered (_("The %s is %ld. "), config->name, config->size); | |
11cf8741 | 1740 | if (config->fixed_p) |
a3f17187 | 1741 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
cc0be08f | 1742 | get_fixed_memory_packet_size (config)); |
11cf8741 | 1743 | else |
cc0be08f | 1744 | { |
6b8edb51 | 1745 | remote_target *remote = get_current_remote_target (); |
cc0be08f | 1746 | |
6b8edb51 | 1747 | if (remote != NULL) |
cc0be08f | 1748 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
6b8edb51 | 1749 | remote->get_memory_packet_size (config)); |
cc0be08f PA |
1750 | else |
1751 | puts_filtered ("The actual limit will be further reduced " | |
1752 | "dependent on the target.\n"); | |
1753 | } | |
11cf8741 JM |
1754 | } |
1755 | ||
5b6d1e4f | 1756 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1757 | static struct memory_packet_config memory_write_packet_config = |
1758 | { | |
1759 | "memory-write-packet-size", | |
1760 | }; | |
1761 | ||
1762 | static void | |
ac88e2de | 1763 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1764 | { |
1765 | set_memory_packet_size (args, &memory_write_packet_config); | |
1766 | } | |
1767 | ||
1768 | static void | |
ac88e2de | 1769 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1770 | { |
1771 | show_memory_packet_size (&memory_write_packet_config); | |
1772 | } | |
1773 | ||
055303e2 AB |
1774 | /* Show the number of hardware watchpoints that can be used. */ |
1775 | ||
1776 | static void | |
1777 | show_hardware_watchpoint_limit (struct ui_file *file, int from_tty, | |
1778 | struct cmd_list_element *c, | |
1779 | const char *value) | |
1780 | { | |
1781 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1782 | "watchpoints is %s.\n"), value); | |
1783 | } | |
1784 | ||
1785 | /* Show the length limit (in bytes) for hardware watchpoints. */ | |
1786 | ||
1787 | static void | |
1788 | show_hardware_watchpoint_length_limit (struct ui_file *file, int from_tty, | |
1789 | struct cmd_list_element *c, | |
1790 | const char *value) | |
1791 | { | |
1792 | fprintf_filtered (file, _("The maximum length (in bytes) of a target " | |
1793 | "hardware watchpoint is %s.\n"), value); | |
1794 | } | |
1795 | ||
1796 | /* Show the number of hardware breakpoints that can be used. */ | |
1797 | ||
1798 | static void | |
1799 | show_hardware_breakpoint_limit (struct ui_file *file, int from_tty, | |
1800 | struct cmd_list_element *c, | |
1801 | const char *value) | |
1802 | { | |
1803 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1804 | "breakpoints is %s.\n"), value); | |
1805 | } | |
1806 | ||
6cc8564b LM |
1807 | /* Controls the maximum number of characters to display in the debug output |
1808 | for each remote packet. The remaining characters are omitted. */ | |
1809 | ||
1810 | static int remote_packet_max_chars = 512; | |
1811 | ||
1812 | /* Show the maximum number of characters to display for each remote packet | |
1813 | when remote debugging is enabled. */ | |
1814 | ||
1815 | static void | |
1816 | show_remote_packet_max_chars (struct ui_file *file, int from_tty, | |
1817 | struct cmd_list_element *c, | |
1818 | const char *value) | |
1819 | { | |
1820 | fprintf_filtered (file, _("Number of remote packet characters to " | |
1821 | "display is %s.\n"), value); | |
1822 | } | |
1823 | ||
6b8edb51 PA |
1824 | long |
1825 | remote_target::get_memory_write_packet_size () | |
11cf8741 JM |
1826 | { |
1827 | return get_memory_packet_size (&memory_write_packet_config); | |
1828 | } | |
1829 | ||
5b6d1e4f | 1830 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1831 | static struct memory_packet_config memory_read_packet_config = |
1832 | { | |
1833 | "memory-read-packet-size", | |
1834 | }; | |
1835 | ||
1836 | static void | |
ac88e2de | 1837 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1838 | { |
1839 | set_memory_packet_size (args, &memory_read_packet_config); | |
1840 | } | |
1841 | ||
1842 | static void | |
ac88e2de | 1843 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1844 | { |
1845 | show_memory_packet_size (&memory_read_packet_config); | |
1846 | } | |
1847 | ||
6b8edb51 PA |
1848 | long |
1849 | remote_target::get_memory_read_packet_size () | |
11cf8741 JM |
1850 | { |
1851 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1852 | |
11cf8741 JM |
1853 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1854 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1855 | increased beyond this. */ |
1856 | if (size > get_remote_packet_size ()) | |
1857 | size = get_remote_packet_size (); | |
11cf8741 JM |
1858 | return size; |
1859 | } | |
1860 | ||
11cf8741 | 1861 | \f |
5a2468f5 | 1862 | |
5a2468f5 JM |
1863 | struct packet_config |
1864 | { | |
bb572ddd DJ |
1865 | const char *name; |
1866 | const char *title; | |
4082afcc PA |
1867 | |
1868 | /* If auto, GDB auto-detects support for this packet or feature, | |
1869 | either through qSupported, or by trying the packet and looking | |
1870 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1871 | packet. If false, the packet is disabled. Configs that don't |
1872 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1873 | enum auto_boolean detect; |
4082afcc PA |
1874 | |
1875 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1876 | enum packet_support support; |
1877 | }; | |
1878 | ||
4082afcc PA |
1879 | static enum packet_support packet_config_support (struct packet_config *config); |
1880 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1881 | |
1882 | static void | |
fba45db2 | 1883 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1884 | { |
a121b7c1 | 1885 | const char *support = "internal-error"; |
a744cf53 | 1886 | |
4082afcc | 1887 | switch (packet_config_support (config)) |
5a2468f5 JM |
1888 | { |
1889 | case PACKET_ENABLE: | |
1890 | support = "enabled"; | |
1891 | break; | |
1892 | case PACKET_DISABLE: | |
1893 | support = "disabled"; | |
1894 | break; | |
1895 | case PACKET_SUPPORT_UNKNOWN: | |
1896 | support = "unknown"; | |
1897 | break; | |
1898 | } | |
1899 | switch (config->detect) | |
1900 | { | |
7f19b9a2 | 1901 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1902 | printf_filtered (_("Support for the `%s' packet " |
1903 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1904 | config->name, support); |
5a2468f5 | 1905 | break; |
7f19b9a2 AC |
1906 | case AUTO_BOOLEAN_TRUE: |
1907 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1908 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1909 | config->name, support); | |
8e248173 | 1910 | break; |
5a2468f5 JM |
1911 | } |
1912 | } | |
1913 | ||
1914 | static void | |
bb572ddd DJ |
1915 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1916 | const char *title, int legacy) | |
d471ea57 | 1917 | { |
5a2468f5 JM |
1918 | char *set_doc; |
1919 | char *show_doc; | |
d471ea57 | 1920 | char *cmd_name; |
3ed07be4 | 1921 | |
5a2468f5 JM |
1922 | config->name = name; |
1923 | config->title = title; | |
590042fc | 1924 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet.", |
b435e160 | 1925 | name, title); |
3e43a32a | 1926 | show_doc = xstrprintf ("Show current use of remote " |
590042fc | 1927 | "protocol `%s' (%s) packet.", |
b435e160 | 1928 | name, title); |
d471ea57 | 1929 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1930 | cmd_name = xstrprintf ("%s-packet", title); |
5e84b7ee SM |
1931 | set_show_commands cmds |
1932 | = add_setshow_auto_boolean_cmd (cmd_name, class_obscure, | |
1933 | &config->detect, set_doc, | |
1934 | show_doc, NULL, /* help_doc */ | |
1935 | NULL, | |
1936 | show_remote_protocol_packet_cmd, | |
1937 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1938 | ||
1eefb858 TT |
1939 | /* The command code copies the documentation strings. */ |
1940 | xfree (set_doc); | |
1941 | xfree (show_doc); | |
5e84b7ee | 1942 | |
23860348 | 1943 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1944 | if (legacy) |
1945 | { | |
1946 | char *legacy_name; | |
a744cf53 | 1947 | |
b435e160 | 1948 | legacy_name = xstrprintf ("%s-packet", name); |
5e84b7ee | 1949 | add_alias_cmd (legacy_name, cmds.set, class_obscure, 0, |
bb572ddd | 1950 | &remote_set_cmdlist); |
5e84b7ee | 1951 | add_alias_cmd (legacy_name, cmds.show, class_obscure, 0, |
bb572ddd | 1952 | &remote_show_cmdlist); |
d471ea57 | 1953 | } |
5a2468f5 JM |
1954 | } |
1955 | ||
d471ea57 | 1956 | static enum packet_result |
a76d924d | 1957 | packet_check_result (const char *buf) |
5a2468f5 | 1958 | { |
d471ea57 | 1959 | if (buf[0] != '\0') |
5a2468f5 | 1960 | { |
d471ea57 | 1961 | /* The stub recognized the packet request. Check that the |
23860348 | 1962 | operation succeeded. */ |
a76d924d DJ |
1963 | if (buf[0] == 'E' |
1964 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1965 | && buf[3] == '\0') | |
85102364 | 1966 | /* "Enn" - definitely an error. */ |
a76d924d DJ |
1967 | return PACKET_ERROR; |
1968 | ||
1969 | /* Always treat "E." as an error. This will be used for | |
1970 | more verbose error messages, such as E.memtypes. */ | |
1971 | if (buf[0] == 'E' && buf[1] == '.') | |
1972 | return PACKET_ERROR; | |
1973 | ||
1974 | /* The packet may or may not be OK. Just assume it is. */ | |
1975 | return PACKET_OK; | |
1976 | } | |
1977 | else | |
1978 | /* The stub does not support the packet. */ | |
1979 | return PACKET_UNKNOWN; | |
1980 | } | |
1981 | ||
8d64371b TT |
1982 | static enum packet_result |
1983 | packet_check_result (const gdb::char_vector &buf) | |
1984 | { | |
1985 | return packet_check_result (buf.data ()); | |
1986 | } | |
1987 | ||
a76d924d DJ |
1988 | static enum packet_result |
1989 | packet_ok (const char *buf, struct packet_config *config) | |
1990 | { | |
1991 | enum packet_result result; | |
1992 | ||
4082afcc PA |
1993 | if (config->detect != AUTO_BOOLEAN_TRUE |
1994 | && config->support == PACKET_DISABLE) | |
1995 | internal_error (__FILE__, __LINE__, | |
1996 | _("packet_ok: attempt to use a disabled packet")); | |
1997 | ||
a76d924d DJ |
1998 | result = packet_check_result (buf); |
1999 | switch (result) | |
2000 | { | |
2001 | case PACKET_OK: | |
2002 | case PACKET_ERROR: | |
2003 | /* The stub recognized the packet request. */ | |
4082afcc | 2004 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 2005 | { |
2189c312 SM |
2006 | remote_debug_printf ("Packet %s (%s) is supported", |
2007 | config->name, config->title); | |
d471ea57 | 2008 | config->support = PACKET_ENABLE; |
d471ea57 | 2009 | } |
a76d924d DJ |
2010 | break; |
2011 | case PACKET_UNKNOWN: | |
23860348 | 2012 | /* The stub does not support the packet. */ |
4082afcc PA |
2013 | if (config->detect == AUTO_BOOLEAN_AUTO |
2014 | && config->support == PACKET_ENABLE) | |
d471ea57 | 2015 | { |
4082afcc PA |
2016 | /* If the stub previously indicated that the packet was |
2017 | supported then there is a protocol error. */ | |
2018 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
2019 | config->name, config->title); | |
2020 | } | |
2021 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
2022 | { | |
2023 | /* The user set it wrong. */ | |
2024 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
2025 | config->name, config->title); | |
d471ea57 | 2026 | } |
4082afcc | 2027 | |
2189c312 SM |
2028 | remote_debug_printf ("Packet %s (%s) is NOT supported", |
2029 | config->name, config->title); | |
4082afcc | 2030 | config->support = PACKET_DISABLE; |
a76d924d | 2031 | break; |
5a2468f5 | 2032 | } |
a76d924d DJ |
2033 | |
2034 | return result; | |
5a2468f5 JM |
2035 | } |
2036 | ||
8d64371b TT |
2037 | static enum packet_result |
2038 | packet_ok (const gdb::char_vector &buf, struct packet_config *config) | |
2039 | { | |
2040 | return packet_ok (buf.data (), config); | |
2041 | } | |
2042 | ||
444abaca DJ |
2043 | enum { |
2044 | PACKET_vCont = 0, | |
2045 | PACKET_X, | |
2046 | PACKET_qSymbol, | |
2047 | PACKET_P, | |
2048 | PACKET_p, | |
2049 | PACKET_Z0, | |
2050 | PACKET_Z1, | |
2051 | PACKET_Z2, | |
2052 | PACKET_Z3, | |
2053 | PACKET_Z4, | |
15a201c8 | 2054 | PACKET_vFile_setfs, |
a6b151f1 DJ |
2055 | PACKET_vFile_open, |
2056 | PACKET_vFile_pread, | |
2057 | PACKET_vFile_pwrite, | |
2058 | PACKET_vFile_close, | |
2059 | PACKET_vFile_unlink, | |
b9e7b9c3 | 2060 | PACKET_vFile_readlink, |
0a93529c | 2061 | PACKET_vFile_fstat, |
0876f84a | 2062 | PACKET_qXfer_auxv, |
23181151 | 2063 | PACKET_qXfer_features, |
c78fa86a | 2064 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 2065 | PACKET_qXfer_libraries, |
2268b414 | 2066 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 2067 | PACKET_qXfer_memory_map, |
07e059b5 | 2068 | PACKET_qXfer_osdata, |
dc146f7c | 2069 | PACKET_qXfer_threads, |
0fb4aa4b | 2070 | PACKET_qXfer_statictrace_read, |
b3b9301e | 2071 | PACKET_qXfer_traceframe_info, |
169081d0 | 2072 | PACKET_qXfer_uib, |
711e434b | 2073 | PACKET_qGetTIBAddr, |
444abaca | 2074 | PACKET_qGetTLSAddr, |
be2a5f71 | 2075 | PACKET_qSupported, |
bd3eecc3 | 2076 | PACKET_qTStatus, |
89be2091 | 2077 | PACKET_QPassSignals, |
82075af2 | 2078 | PACKET_QCatchSyscalls, |
9b224c5e | 2079 | PACKET_QProgramSignals, |
bc3b087d | 2080 | PACKET_QSetWorkingDir, |
aefd8b33 | 2081 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
2082 | PACKET_QEnvironmentHexEncoded, |
2083 | PACKET_QEnvironmentReset, | |
2084 | PACKET_QEnvironmentUnset, | |
936d2992 | 2085 | PACKET_qCRC, |
08388c79 | 2086 | PACKET_qSearch_memory, |
2d717e4f DJ |
2087 | PACKET_vAttach, |
2088 | PACKET_vRun, | |
a6f3e723 | 2089 | PACKET_QStartNoAckMode, |
82f73884 | 2090 | PACKET_vKill, |
4aa995e1 PA |
2091 | PACKET_qXfer_siginfo_read, |
2092 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 2093 | PACKET_qAttached, |
4082afcc PA |
2094 | |
2095 | /* Support for conditional tracepoints. */ | |
782b2b07 | 2096 | PACKET_ConditionalTracepoints, |
4082afcc PA |
2097 | |
2098 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 2099 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
2100 | |
2101 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 2102 | PACKET_BreakpointCommands, |
4082afcc PA |
2103 | |
2104 | /* Support for fast tracepoints. */ | |
7a697b8d | 2105 | PACKET_FastTracepoints, |
4082afcc PA |
2106 | |
2107 | /* Support for static tracepoints. */ | |
0fb4aa4b | 2108 | PACKET_StaticTracepoints, |
4082afcc PA |
2109 | |
2110 | /* Support for installing tracepoints while a trace experiment is | |
2111 | running. */ | |
1e4d1764 | 2112 | PACKET_InstallInTrace, |
4082afcc | 2113 | |
40ab02ce MS |
2114 | PACKET_bc, |
2115 | PACKET_bs, | |
409873ef | 2116 | PACKET_TracepointSource, |
d914c394 | 2117 | PACKET_QAllow, |
78d85199 | 2118 | PACKET_qXfer_fdpic, |
03583c20 | 2119 | PACKET_QDisableRandomization, |
d1feda86 | 2120 | PACKET_QAgent, |
f6f899bf | 2121 | PACKET_QTBuffer_size, |
9accd112 MM |
2122 | PACKET_Qbtrace_off, |
2123 | PACKET_Qbtrace_bts, | |
b20a6524 | 2124 | PACKET_Qbtrace_pt, |
9accd112 | 2125 | PACKET_qXfer_btrace, |
4082afcc PA |
2126 | |
2127 | /* Support for the QNonStop packet. */ | |
2128 | PACKET_QNonStop, | |
2129 | ||
65706a29 PA |
2130 | /* Support for the QThreadEvents packet. */ |
2131 | PACKET_QThreadEvents, | |
2132 | ||
4082afcc PA |
2133 | /* Support for multi-process extensions. */ |
2134 | PACKET_multiprocess_feature, | |
2135 | ||
2136 | /* Support for enabling and disabling tracepoints while a trace | |
2137 | experiment is running. */ | |
2138 | PACKET_EnableDisableTracepoints_feature, | |
2139 | ||
2140 | /* Support for collecting strings using the tracenz bytecode. */ | |
2141 | PACKET_tracenz_feature, | |
2142 | ||
2143 | /* Support for continuing to run a trace experiment while GDB is | |
2144 | disconnected. */ | |
2145 | PACKET_DisconnectedTracing_feature, | |
2146 | ||
2147 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
2148 | PACKET_augmented_libraries_svr4_read_feature, | |
2149 | ||
f4abbc16 MM |
2150 | /* Support for the qXfer:btrace-conf:read packet. */ |
2151 | PACKET_qXfer_btrace_conf, | |
2152 | ||
d33501a5 MM |
2153 | /* Support for the Qbtrace-conf:bts:size packet. */ |
2154 | PACKET_Qbtrace_conf_bts_size, | |
2155 | ||
f7e6eed5 PA |
2156 | /* Support for swbreak+ feature. */ |
2157 | PACKET_swbreak_feature, | |
2158 | ||
2159 | /* Support for hwbreak+ feature. */ | |
2160 | PACKET_hwbreak_feature, | |
2161 | ||
89245bc0 DB |
2162 | /* Support for fork events. */ |
2163 | PACKET_fork_event_feature, | |
2164 | ||
2165 | /* Support for vfork events. */ | |
2166 | PACKET_vfork_event_feature, | |
2167 | ||
b20a6524 MM |
2168 | /* Support for the Qbtrace-conf:pt:size packet. */ |
2169 | PACKET_Qbtrace_conf_pt_size, | |
2170 | ||
94585166 DB |
2171 | /* Support for exec events. */ |
2172 | PACKET_exec_event_feature, | |
2173 | ||
750ce8d1 YQ |
2174 | /* Support for query supported vCont actions. */ |
2175 | PACKET_vContSupported, | |
2176 | ||
de979965 PA |
2177 | /* Support remote CTRL-C. */ |
2178 | PACKET_vCtrlC, | |
2179 | ||
f2faf941 PA |
2180 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
2181 | PACKET_no_resumed, | |
2182 | ||
2c2e7f87 LM |
2183 | /* Support for memory tagging, allocation tag fetch/store |
2184 | packets and the tag violation stop replies. */ | |
2185 | PACKET_memory_tagging_feature, | |
2186 | ||
444abaca DJ |
2187 | PACKET_MAX |
2188 | }; | |
506fb367 | 2189 | |
5b6d1e4f PA |
2190 | /* FIXME: needs to be per-remote-target. Ignoring this for now, |
2191 | assuming all remote targets are the same server (thus all support | |
2192 | the same packets). */ | |
444abaca | 2193 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 2194 | |
f7e6eed5 PA |
2195 | /* Returns the packet's corresponding "set remote foo-packet" command |
2196 | state. See struct packet_config for more details. */ | |
2197 | ||
2198 | static enum auto_boolean | |
2199 | packet_set_cmd_state (int packet) | |
2200 | { | |
2201 | return remote_protocol_packets[packet].detect; | |
2202 | } | |
2203 | ||
4082afcc PA |
2204 | /* Returns whether a given packet or feature is supported. This takes |
2205 | into account the state of the corresponding "set remote foo-packet" | |
2206 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2207 | |
4082afcc PA |
2208 | static enum packet_support |
2209 | packet_config_support (struct packet_config *config) | |
2210 | { | |
2211 | switch (config->detect) | |
444abaca | 2212 | { |
4082afcc PA |
2213 | case AUTO_BOOLEAN_TRUE: |
2214 | return PACKET_ENABLE; | |
2215 | case AUTO_BOOLEAN_FALSE: | |
2216 | return PACKET_DISABLE; | |
2217 | case AUTO_BOOLEAN_AUTO: | |
2218 | return config->support; | |
2219 | default: | |
2220 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 2221 | } |
4082afcc PA |
2222 | } |
2223 | ||
2224 | /* Same as packet_config_support, but takes the packet's enum value as | |
2225 | argument. */ | |
2226 | ||
2227 | static enum packet_support | |
2228 | packet_support (int packet) | |
2229 | { | |
2230 | struct packet_config *config = &remote_protocol_packets[packet]; | |
2231 | ||
2232 | return packet_config_support (config); | |
dc8acb97 MS |
2233 | } |
2234 | ||
5a2468f5 | 2235 | static void |
444abaca DJ |
2236 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2237 | struct cmd_list_element *c, | |
2238 | const char *value) | |
5a2468f5 | 2239 | { |
444abaca | 2240 | struct packet_config *packet; |
5a2468f5 | 2241 | |
444abaca DJ |
2242 | for (packet = remote_protocol_packets; |
2243 | packet < &remote_protocol_packets[PACKET_MAX]; | |
2244 | packet++) | |
2245 | { | |
2246 | if (&packet->detect == c->var) | |
2247 | { | |
2248 | show_packet_config_cmd (packet); | |
2249 | return; | |
2250 | } | |
2251 | } | |
9b20d036 | 2252 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 2253 | c->name); |
5a2468f5 JM |
2254 | } |
2255 | ||
d471ea57 AC |
2256 | /* Should we try one of the 'Z' requests? */ |
2257 | ||
2258 | enum Z_packet_type | |
2259 | { | |
2260 | Z_PACKET_SOFTWARE_BP, | |
2261 | Z_PACKET_HARDWARE_BP, | |
2262 | Z_PACKET_WRITE_WP, | |
2263 | Z_PACKET_READ_WP, | |
2264 | Z_PACKET_ACCESS_WP, | |
2265 | NR_Z_PACKET_TYPES | |
2266 | }; | |
96baa820 | 2267 | |
d471ea57 | 2268 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2269 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2270 | |
7f19b9a2 | 2271 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2272 | |
2273 | static void | |
eb4c3f4a | 2274 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2275 | struct cmd_list_element *c) |
96baa820 | 2276 | { |
d471ea57 | 2277 | int i; |
a744cf53 | 2278 | |
d471ea57 | 2279 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 2280 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
2281 | } |
2282 | ||
2283 | static void | |
08546159 AC |
2284 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2285 | struct cmd_list_element *c, | |
2286 | const char *value) | |
96baa820 | 2287 | { |
d471ea57 | 2288 | int i; |
a744cf53 | 2289 | |
d471ea57 AC |
2290 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2291 | { | |
444abaca | 2292 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 2293 | } |
96baa820 JM |
2294 | } |
2295 | ||
4082afcc PA |
2296 | /* Returns true if the multi-process extensions are in effect. */ |
2297 | ||
2298 | static int | |
2299 | remote_multi_process_p (struct remote_state *rs) | |
2300 | { | |
2301 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
2302 | } | |
2303 | ||
de0d863e DB |
2304 | /* Returns true if fork events are supported. */ |
2305 | ||
2306 | static int | |
2307 | remote_fork_event_p (struct remote_state *rs) | |
2308 | { | |
2309 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
2310 | } | |
2311 | ||
c269dbdb DB |
2312 | /* Returns true if vfork events are supported. */ |
2313 | ||
2314 | static int | |
2315 | remote_vfork_event_p (struct remote_state *rs) | |
2316 | { | |
2317 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
2318 | } | |
2319 | ||
d46addbb DB |
2320 | /* Returns true if exec events are supported. */ |
2321 | ||
2322 | static int | |
2323 | remote_exec_event_p (struct remote_state *rs) | |
2324 | { | |
2325 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
2326 | } | |
2327 | ||
2c2e7f87 LM |
2328 | /* Returns true if memory tagging is supported, false otherwise. */ |
2329 | ||
2330 | static bool | |
2331 | remote_memory_tagging_p () | |
2332 | { | |
2333 | return packet_support (PACKET_memory_tagging_feature) == PACKET_ENABLE; | |
2334 | } | |
2335 | ||
cbb8991c DB |
2336 | /* Insert fork catchpoint target routine. If fork events are enabled |
2337 | then return success, nothing more to do. */ | |
2338 | ||
f6ac5f3d PA |
2339 | int |
2340 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
2341 | { |
2342 | struct remote_state *rs = get_remote_state (); | |
2343 | ||
2344 | return !remote_fork_event_p (rs); | |
2345 | } | |
2346 | ||
2347 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2348 | return success. */ | |
2349 | ||
f6ac5f3d PA |
2350 | int |
2351 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2352 | { |
2353 | return 0; | |
2354 | } | |
2355 | ||
2356 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2357 | then return success, nothing more to do. */ | |
2358 | ||
f6ac5f3d PA |
2359 | int |
2360 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
2361 | { |
2362 | struct remote_state *rs = get_remote_state (); | |
2363 | ||
2364 | return !remote_vfork_event_p (rs); | |
2365 | } | |
2366 | ||
2367 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2368 | return success. */ | |
2369 | ||
f6ac5f3d PA |
2370 | int |
2371 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2372 | { |
2373 | return 0; | |
2374 | } | |
2375 | ||
d46addbb DB |
2376 | /* Insert exec catchpoint target routine. If exec events are |
2377 | enabled, just return success. */ | |
2378 | ||
f6ac5f3d PA |
2379 | int |
2380 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
2381 | { |
2382 | struct remote_state *rs = get_remote_state (); | |
2383 | ||
2384 | return !remote_exec_event_p (rs); | |
2385 | } | |
2386 | ||
2387 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2388 | return success. */ | |
2389 | ||
f6ac5f3d PA |
2390 | int |
2391 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2392 | { |
2393 | return 0; | |
2394 | } | |
2395 | ||
c906108c SS |
2396 | \f |
2397 | ||
ffdd69cf TT |
2398 | /* Take advantage of the fact that the TID field is not used, to tag |
2399 | special ptids with it set to != 0. */ | |
2400 | static const ptid_t magic_null_ptid (42000, -1, 1); | |
2401 | static const ptid_t not_sent_ptid (42000, -2, 1); | |
2402 | static const ptid_t any_thread_ptid (42000, 0, 1); | |
79d7f229 | 2403 | |
0b16c5cf PA |
2404 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2405 | detach instead of killing it when bailing out). */ | |
2406 | ||
6b8edb51 PA |
2407 | int |
2408 | remote_target::remote_query_attached (int pid) | |
0b16c5cf PA |
2409 | { |
2410 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2411 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2412 | |
4082afcc | 2413 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2414 | return 0; |
2415 | ||
2416 | if (remote_multi_process_p (rs)) | |
8d64371b | 2417 | xsnprintf (rs->buf.data (), size, "qAttached:%x", pid); |
0b16c5cf | 2418 | else |
8d64371b | 2419 | xsnprintf (rs->buf.data (), size, "qAttached"); |
0b16c5cf PA |
2420 | |
2421 | putpkt (rs->buf); | |
8d64371b | 2422 | getpkt (&rs->buf, 0); |
0b16c5cf PA |
2423 | |
2424 | switch (packet_ok (rs->buf, | |
1554e9be | 2425 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
2426 | { |
2427 | case PACKET_OK: | |
8d64371b | 2428 | if (strcmp (rs->buf.data (), "1") == 0) |
0b16c5cf PA |
2429 | return 1; |
2430 | break; | |
2431 | case PACKET_ERROR: | |
8d64371b | 2432 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
0b16c5cf PA |
2433 | break; |
2434 | case PACKET_UNKNOWN: | |
2435 | break; | |
2436 | } | |
2437 | ||
2438 | return 0; | |
2439 | } | |
2440 | ||
49c62f2e PA |
2441 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2442 | has been invented by GDB, instead of reported by the target. Since | |
2443 | we can be connected to a remote system before before knowing about | |
2444 | any inferior, mark the target with execution when we find the first | |
2445 | inferior. If ATTACHED is 1, then we had just attached to this | |
2446 | inferior. If it is 0, then we just created this inferior. If it | |
2447 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2448 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2449 | attempt to open this inferior's executable as the main executable | |
2450 | if no main executable is open already. */ | |
1941c569 | 2451 | |
6b8edb51 | 2452 | inferior * |
9ab8741a | 2453 | remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 | 2454 | int try_open_exec) |
1941c569 | 2455 | { |
1941c569 PA |
2456 | struct inferior *inf; |
2457 | ||
0b16c5cf PA |
2458 | /* Check whether this process we're learning about is to be |
2459 | considered attached, or if is to be considered to have been | |
2460 | spawned by the stub. */ | |
2461 | if (attached == -1) | |
2462 | attached = remote_query_attached (pid); | |
2463 | ||
f5656ead | 2464 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2465 | { |
2466 | /* If the target shares code across all inferiors, then every | |
2467 | attach adds a new inferior. */ | |
2468 | inf = add_inferior (pid); | |
2469 | ||
2470 | /* ... and every inferior is bound to the same program space. | |
2471 | However, each inferior may still have its own address | |
2472 | space. */ | |
2473 | inf->aspace = maybe_new_address_space (); | |
2474 | inf->pspace = current_program_space; | |
2475 | } | |
2476 | else | |
2477 | { | |
2478 | /* In the traditional debugging scenario, there's a 1-1 match | |
2479 | between program/address spaces. We simply bind the inferior | |
2480 | to the program space's address space. */ | |
2481 | inf = current_inferior (); | |
78f2c40a PA |
2482 | |
2483 | /* However, if the current inferior is already bound to a | |
2484 | process, find some other empty inferior. */ | |
2485 | if (inf->pid != 0) | |
2486 | { | |
2487 | inf = nullptr; | |
2488 | for (inferior *it : all_inferiors ()) | |
2489 | if (it->pid == 0) | |
2490 | { | |
2491 | inf = it; | |
2492 | break; | |
2493 | } | |
2494 | } | |
2495 | if (inf == nullptr) | |
2496 | { | |
2497 | /* Since all inferiors were already bound to a process, add | |
2498 | a new inferior. */ | |
2499 | inf = add_inferior_with_spaces (); | |
2500 | } | |
2501 | switch_to_inferior_no_thread (inf); | |
02980c56 | 2502 | inf->push_target (this); |
6c95b8df PA |
2503 | inferior_appeared (inf, pid); |
2504 | } | |
1941c569 | 2505 | |
0b16c5cf | 2506 | inf->attach_flag = attached; |
49c62f2e | 2507 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2508 | |
1b6e6f5c GB |
2509 | /* If no main executable is currently open then attempt to |
2510 | open the file that was executed to create this inferior. */ | |
835205d0 | 2511 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2512 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2513 | |
a2fedca9 PW |
2514 | /* Check for exec file mismatch, and let the user solve it. */ |
2515 | validate_exec_file (1); | |
2516 | ||
1941c569 PA |
2517 | return inf; |
2518 | } | |
2519 | ||
7aabaf9d | 2520 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
5b6d1e4f PA |
2521 | static remote_thread_info *get_remote_thread_info (remote_target *target, |
2522 | ptid_t ptid); | |
85ad3aaf | 2523 | |
1941c569 PA |
2524 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
2525 | according to RUNNING. */ | |
2526 | ||
00431a78 | 2527 | thread_info * |
6b8edb51 | 2528 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing) |
c906108c | 2529 | { |
b7ea362b | 2530 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2531 | struct thread_info *thread; |
b7ea362b PA |
2532 | |
2533 | /* GDB historically didn't pull threads in the initial connection | |
2534 | setup. If the remote target doesn't even have a concept of | |
2535 | threads (e.g., a bare-metal target), even if internally we | |
2536 | consider that a single-threaded target, mentioning a new thread | |
2537 | might be confusing to the user. Be silent then, preserving the | |
2538 | age old behavior. */ | |
2539 | if (rs->starting_up) | |
5b6d1e4f | 2540 | thread = add_thread_silent (this, ptid); |
b7ea362b | 2541 | else |
5b6d1e4f | 2542 | thread = add_thread (this, ptid); |
1941c569 | 2543 | |
c9d22089 SM |
2544 | /* We start by assuming threads are resumed. That state then gets updated |
2545 | when we process a matching stop reply. */ | |
2546 | get_remote_thread_info (thread)->set_resumed (); | |
2547 | ||
5b6d1e4f PA |
2548 | set_executing (this, ptid, executing); |
2549 | set_running (this, ptid, running); | |
00431a78 PA |
2550 | |
2551 | return thread; | |
1941c569 PA |
2552 | } |
2553 | ||
2554 | /* Come here when we learn about a thread id from the remote target. | |
2555 | It may be the first time we hear about such thread, so take the | |
2556 | opportunity to add it to GDB's thread list. In case this is the | |
2557 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2558 | GDB's inferior list as well. EXECUTING indicates whether the |
2559 | thread is (internally) executing or stopped. */ | |
1941c569 | 2560 | |
6b8edb51 | 2561 | void |
8a82de58 | 2562 | remote_target::remote_notice_new_inferior (ptid_t currthread, bool executing) |
1941c569 | 2563 | { |
0d5b594f PA |
2564 | /* In non-stop mode, we assume new found threads are (externally) |
2565 | running until proven otherwise with a stop reply. In all-stop, | |
2566 | we can only get here if all threads are stopped. */ | |
8a82de58 | 2567 | bool running = target_is_non_stop_p (); |
0d5b594f | 2568 | |
c906108c SS |
2569 | /* If this is a new thread, add it to GDB's thread list. |
2570 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 | 2571 | |
5b6d1e4f | 2572 | thread_info *tp = find_thread_ptid (this, currthread); |
00431a78 | 2573 | if (tp != NULL && tp->state == THREAD_EXITED) |
82f73884 PA |
2574 | { |
2575 | /* We're seeing an event on a thread id we knew had exited. | |
2576 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 2577 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
2578 | return; |
2579 | } | |
2580 | ||
5b6d1e4f | 2581 | if (!in_thread_list (this, currthread)) |
c0a2216e | 2582 | { |
1941c569 | 2583 | struct inferior *inf = NULL; |
e99b03dc | 2584 | int pid = currthread.pid (); |
1941c569 | 2585 | |
0e998d96 | 2586 | if (inferior_ptid.is_pid () |
e99b03dc | 2587 | && pid == inferior_ptid.pid ()) |
c0a2216e PA |
2588 | { |
2589 | /* inferior_ptid has no thread member yet. This can happen | |
2590 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2591 | stub doesn't support qC. This is the first stop reported | |
2592 | after an attach, so this is the main thread. Update the | |
2593 | ptid in the thread list. */ | |
5b6d1e4f PA |
2594 | if (in_thread_list (this, ptid_t (pid))) |
2595 | thread_change_ptid (this, inferior_ptid, currthread); | |
bad34192 PA |
2596 | else |
2597 | { | |
0ac55310 PA |
2598 | thread_info *thr |
2599 | = remote_add_thread (currthread, running, executing); | |
2600 | switch_to_thread (thr); | |
bad34192 | 2601 | } |
dc146f7c | 2602 | return; |
c0a2216e | 2603 | } |
82f73884 | 2604 | |
d7e15655 | 2605 | if (magic_null_ptid == inferior_ptid) |
c0a2216e PA |
2606 | { |
2607 | /* inferior_ptid is not set yet. This can happen with the | |
2608 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2609 | doesn't support qC. This is the first stop reported | |
2610 | after an attach, so this is the main thread. Update the | |
2611 | ptid in the thread list. */ | |
5b6d1e4f | 2612 | thread_change_ptid (this, inferior_ptid, currthread); |
82f73884 | 2613 | return; |
c0a2216e | 2614 | } |
82f73884 | 2615 | |
29c87f7f PA |
2616 | /* When connecting to a target remote, or to a target |
2617 | extended-remote which already was debugging an inferior, we | |
2618 | may not know about it yet. Add it before adding its child | |
2619 | thread, so notifications are emitted in a sensible order. */ | |
5b6d1e4f | 2620 | if (find_inferior_pid (this, currthread.pid ()) == NULL) |
49c62f2e PA |
2621 | { |
2622 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 2623 | bool fake_pid_p = !remote_multi_process_p (rs); |
49c62f2e PA |
2624 | |
2625 | inf = remote_add_inferior (fake_pid_p, | |
e99b03dc | 2626 | currthread.pid (), -1, 1); |
49c62f2e | 2627 | } |
29c87f7f | 2628 | |
82f73884 | 2629 | /* This is really a new thread. Add it. */ |
00431a78 PA |
2630 | thread_info *new_thr |
2631 | = remote_add_thread (currthread, running, executing); | |
1941c569 PA |
2632 | |
2633 | /* If we found a new inferior, let the common code do whatever | |
2634 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2635 | breakpoints), unless we're just setting up an all-stop |
2636 | connection. */ | |
1941c569 | 2637 | if (inf != NULL) |
b7ea362b PA |
2638 | { |
2639 | struct remote_state *rs = get_remote_state (); | |
2640 | ||
6efcd9a8 | 2641 | if (!rs->starting_up) |
00431a78 | 2642 | notice_new_inferior (new_thr, executing, 0); |
b7ea362b | 2643 | } |
c0a2216e | 2644 | } |
c906108c SS |
2645 | } |
2646 | ||
85ad3aaf | 2647 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2648 | |
7aabaf9d SM |
2649 | static remote_thread_info * |
2650 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2651 | { |
85ad3aaf | 2652 | gdb_assert (thread != NULL); |
dc146f7c | 2653 | |
85ad3aaf | 2654 | if (thread->priv == NULL) |
7aabaf9d | 2655 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2656 | |
7aabaf9d | 2657 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2658 | } |
2659 | ||
5b6d1e4f PA |
2660 | /* Return PTID's private thread data, creating it if necessary. */ |
2661 | ||
7aabaf9d | 2662 | static remote_thread_info * |
5b6d1e4f | 2663 | get_remote_thread_info (remote_target *target, ptid_t ptid) |
85ad3aaf | 2664 | { |
5b6d1e4f | 2665 | thread_info *thr = find_thread_ptid (target, ptid); |
00431a78 | 2666 | return get_remote_thread_info (thr); |
dc146f7c VP |
2667 | } |
2668 | ||
74531fed PA |
2669 | /* Call this function as a result of |
2670 | 1) A halt indication (T packet) containing a thread id | |
2671 | 2) A direct query of currthread | |
0df8b418 | 2672 | 3) Successful execution of set thread */ |
74531fed PA |
2673 | |
2674 | static void | |
47f8a51d | 2675 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2676 | { |
47f8a51d | 2677 | rs->general_thread = currthread; |
74531fed PA |
2678 | } |
2679 | ||
89be2091 DJ |
2680 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2681 | it can simply pass through to the inferior without reporting. */ | |
2682 | ||
f6ac5f3d | 2683 | void |
adc6a863 | 2684 | remote_target::pass_signals (gdb::array_view<const unsigned char> pass_signals) |
89be2091 | 2685 | { |
4082afcc | 2686 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2687 | { |
2688 | char *pass_packet, *p; | |
adc6a863 | 2689 | int count = 0; |
747dc59d | 2690 | struct remote_state *rs = get_remote_state (); |
89be2091 | 2691 | |
adc6a863 PA |
2692 | gdb_assert (pass_signals.size () < 256); |
2693 | for (size_t i = 0; i < pass_signals.size (); i++) | |
89be2091 | 2694 | { |
2455069d | 2695 | if (pass_signals[i]) |
89be2091 DJ |
2696 | count++; |
2697 | } | |
224c3ddb | 2698 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2699 | strcpy (pass_packet, "QPassSignals:"); |
2700 | p = pass_packet + strlen (pass_packet); | |
adc6a863 | 2701 | for (size_t i = 0; i < pass_signals.size (); i++) |
89be2091 | 2702 | { |
2455069d | 2703 | if (pass_signals[i]) |
89be2091 DJ |
2704 | { |
2705 | if (i >= 16) | |
2706 | *p++ = tohex (i >> 4); | |
2707 | *p++ = tohex (i & 15); | |
2708 | if (count) | |
2709 | *p++ = ';'; | |
2710 | else | |
2711 | break; | |
2712 | count--; | |
2713 | } | |
2714 | } | |
2715 | *p = 0; | |
747dc59d | 2716 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2717 | { |
89be2091 | 2718 | putpkt (pass_packet); |
8d64371b | 2719 | getpkt (&rs->buf, 0); |
8dc5b319 | 2720 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
84d53fa9 | 2721 | xfree (rs->last_pass_packet); |
747dc59d | 2722 | rs->last_pass_packet = pass_packet; |
89be2091 DJ |
2723 | } |
2724 | else | |
2725 | xfree (pass_packet); | |
2726 | } | |
2727 | } | |
2728 | ||
82075af2 JS |
2729 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2730 | to report syscalls to GDB. */ | |
2731 | ||
f6ac5f3d PA |
2732 | int |
2733 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2734 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2735 | { |
b80406ac | 2736 | const char *catch_packet; |
82075af2 JS |
2737 | enum packet_result result; |
2738 | int n_sysno = 0; | |
2739 | ||
2740 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2741 | { | |
2742 | /* Not supported. */ | |
2743 | return 1; | |
2744 | } | |
2745 | ||
649a140c | 2746 | if (needed && any_count == 0) |
82075af2 | 2747 | { |
649a140c PA |
2748 | /* Count how many syscalls are to be caught. */ |
2749 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2750 | { |
649a140c | 2751 | if (syscall_counts[i] != 0) |
82075af2 JS |
2752 | n_sysno++; |
2753 | } | |
2754 | } | |
2755 | ||
2189c312 SM |
2756 | remote_debug_printf ("pid %d needed %d any_count %d n_sysno %d", |
2757 | pid, needed, any_count, n_sysno); | |
82075af2 | 2758 | |
1b81856f | 2759 | std::string built_packet; |
82075af2 JS |
2760 | if (needed) |
2761 | { | |
2762 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2763 | characters for a sysno. If the resulting packet size is too | |
2764 | big, fallback on the non-selective packet. */ | |
2765 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2766 | built_packet.reserve (maxpktsz); |
2767 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2768 | if (any_count == 0) |
82075af2 | 2769 | { |
649a140c PA |
2770 | /* Add in each syscall to be caught. */ |
2771 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2772 | { |
649a140c PA |
2773 | if (syscall_counts[i] != 0) |
2774 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2775 | } |
2776 | } | |
1b81856f | 2777 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2778 | { |
2779 | /* catch_packet too big. Fallback to less efficient | |
2780 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2781 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2782 | } |
b80406ac | 2783 | else |
1b81856f | 2784 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2785 | } |
2786 | else | |
b80406ac | 2787 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2788 | |
b80406ac | 2789 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2790 | |
b80406ac | 2791 | putpkt (catch_packet); |
8d64371b | 2792 | getpkt (&rs->buf, 0); |
b80406ac TT |
2793 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); |
2794 | if (result == PACKET_OK) | |
2795 | return 0; | |
2796 | else | |
2797 | return -1; | |
82075af2 JS |
2798 | } |
2799 | ||
9b224c5e PA |
2800 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2801 | signals it should pass through to the inferior when detaching. */ | |
2802 | ||
f6ac5f3d | 2803 | void |
adc6a863 | 2804 | remote_target::program_signals (gdb::array_view<const unsigned char> signals) |
9b224c5e | 2805 | { |
4082afcc | 2806 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2807 | { |
2808 | char *packet, *p; | |
adc6a863 | 2809 | int count = 0; |
5e4a05c4 | 2810 | struct remote_state *rs = get_remote_state (); |
9b224c5e | 2811 | |
adc6a863 PA |
2812 | gdb_assert (signals.size () < 256); |
2813 | for (size_t i = 0; i < signals.size (); i++) | |
9b224c5e PA |
2814 | { |
2815 | if (signals[i]) | |
2816 | count++; | |
2817 | } | |
224c3ddb | 2818 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2819 | strcpy (packet, "QProgramSignals:"); |
2820 | p = packet + strlen (packet); | |
adc6a863 | 2821 | for (size_t i = 0; i < signals.size (); i++) |
9b224c5e PA |
2822 | { |
2823 | if (signal_pass_state (i)) | |
2824 | { | |
2825 | if (i >= 16) | |
2826 | *p++ = tohex (i >> 4); | |
2827 | *p++ = tohex (i & 15); | |
2828 | if (count) | |
2829 | *p++ = ';'; | |
2830 | else | |
2831 | break; | |
2832 | count--; | |
2833 | } | |
2834 | } | |
2835 | *p = 0; | |
5e4a05c4 TT |
2836 | if (!rs->last_program_signals_packet |
2837 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2838 | { |
9b224c5e | 2839 | putpkt (packet); |
8d64371b | 2840 | getpkt (&rs->buf, 0); |
8dc5b319 | 2841 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2842 | xfree (rs->last_program_signals_packet); |
2843 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2844 | } |
2845 | else | |
2846 | xfree (packet); | |
2847 | } | |
2848 | } | |
2849 | ||
79d7f229 PA |
2850 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2851 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2852 | thread. If GEN is set, set the general thread, if not, then set | |
2853 | the step/continue thread. */ | |
6b8edb51 PA |
2854 | void |
2855 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 2856 | { |
d01949b6 | 2857 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2858 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
8d64371b TT |
2859 | char *buf = rs->buf.data (); |
2860 | char *endbuf = buf + get_remote_packet_size (); | |
c906108c | 2861 | |
d7e15655 | 2862 | if (state == ptid) |
c906108c SS |
2863 | return; |
2864 | ||
79d7f229 PA |
2865 | *buf++ = 'H'; |
2866 | *buf++ = gen ? 'g' : 'c'; | |
d7e15655 | 2867 | if (ptid == magic_null_ptid) |
79d7f229 | 2868 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2869 | else if (ptid == any_thread_ptid) |
79d7f229 | 2870 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2871 | else if (ptid == minus_one_ptid) |
79d7f229 PA |
2872 | xsnprintf (buf, endbuf - buf, "-1"); |
2873 | else | |
82f73884 | 2874 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2875 | putpkt (rs->buf); |
8d64371b | 2876 | getpkt (&rs->buf, 0); |
c906108c | 2877 | if (gen) |
47f8a51d | 2878 | rs->general_thread = ptid; |
c906108c | 2879 | else |
47f8a51d | 2880 | rs->continue_thread = ptid; |
c906108c | 2881 | } |
79d7f229 | 2882 | |
6b8edb51 PA |
2883 | void |
2884 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
2885 | { |
2886 | set_thread (ptid, 1); | |
2887 | } | |
2888 | ||
6b8edb51 PA |
2889 | void |
2890 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
2891 | { |
2892 | set_thread (ptid, 0); | |
2893 | } | |
2894 | ||
3c9c4b83 PA |
2895 | /* Change the remote current process. Which thread within the process |
2896 | ends up selected isn't important, as long as it is the same process | |
2897 | as what INFERIOR_PTID points to. | |
2898 | ||
2899 | This comes from that fact that there is no explicit notion of | |
2900 | "selected process" in the protocol. The selected process for | |
2901 | general operations is the process the selected general thread | |
2902 | belongs to. */ | |
2903 | ||
6b8edb51 PA |
2904 | void |
2905 | remote_target::set_general_process () | |
3c9c4b83 PA |
2906 | { |
2907 | struct remote_state *rs = get_remote_state (); | |
2908 | ||
2909 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2910 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2911 | return; |
2912 | ||
2913 | /* We only need to change the remote current thread if it's pointing | |
2914 | at some other process. */ | |
e99b03dc | 2915 | if (rs->general_thread.pid () != inferior_ptid.pid ()) |
3c9c4b83 PA |
2916 | set_general_thread (inferior_ptid); |
2917 | } | |
2918 | ||
c906108c | 2919 | \f |
7d1a114c PA |
2920 | /* Return nonzero if this is the main thread that we made up ourselves |
2921 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2922 | |
2923 | static int | |
f6ac5f3d | 2924 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2925 | { |
d7e15655 | 2926 | if (ptid == magic_null_ptid) |
c0a2216e PA |
2927 | /* The main thread is always alive. */ |
2928 | return 1; | |
2929 | ||
e38504b3 | 2930 | if (ptid.pid () != 0 && ptid.lwp () == 0) |
c0a2216e PA |
2931 | /* The main thread is always alive. This can happen after a |
2932 | vAttach, if the remote side doesn't support | |
2933 | multi-threading. */ | |
2934 | return 1; | |
2935 | ||
7d1a114c PA |
2936 | return 0; |
2937 | } | |
2938 | ||
2939 | /* Return nonzero if the thread PTID is still alive on the remote | |
2940 | system. */ | |
2941 | ||
57810aa7 | 2942 | bool |
f6ac5f3d | 2943 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
2944 | { |
2945 | struct remote_state *rs = get_remote_state (); | |
2946 | char *p, *endp; | |
2947 | ||
2948 | /* Check if this is a thread that we made up ourselves to model | |
2949 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2950 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2951 | return 1; |
2952 | ||
8d64371b TT |
2953 | p = rs->buf.data (); |
2954 | endp = p + get_remote_packet_size (); | |
82f73884 PA |
2955 | |
2956 | *p++ = 'T'; | |
2957 | write_ptid (p, endp, ptid); | |
2958 | ||
2e9f7625 | 2959 | putpkt (rs->buf); |
8d64371b | 2960 | getpkt (&rs->buf, 0); |
2e9f7625 | 2961 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2962 | } |
2963 | ||
79efa585 SM |
2964 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2965 | The thread_info object owns the memory for the name. */ | |
2966 | ||
f6ac5f3d PA |
2967 | const char * |
2968 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
2969 | { |
2970 | if (info->priv != NULL) | |
a9334058 SM |
2971 | { |
2972 | const std::string &name = get_remote_thread_info (info)->name; | |
2973 | return !name.empty () ? name.c_str () : NULL; | |
2974 | } | |
79efa585 SM |
2975 | |
2976 | return NULL; | |
2977 | } | |
2978 | ||
c906108c SS |
2979 | /* About these extended threadlist and threadinfo packets. They are |
2980 | variable length packets but, the fields within them are often fixed | |
30baf67b | 2981 | length. They are redundant enough to send over UDP as is the |
c906108c SS |
2982 | remote protocol in general. There is a matching unit test module |
2983 | in libstub. */ | |
2984 | ||
23860348 | 2985 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2986 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2987 | changable. */ |
cce74817 JM |
2988 | |
2989 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2990 | Plan to fix this. */ |
cce74817 | 2991 | |
23860348 | 2992 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2993 | |
9d1f7ab2 | 2994 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2995 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2996 | |
2997 | struct gdb_ext_thread_info | |
c5aa993b | 2998 | { |
23860348 | 2999 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 3000 | int active; /* Has state interesting to GDB? |
23860348 | 3001 | regs, stack. */ |
2bc416ba | 3002 | char display[256]; /* Brief state display, name, |
cedea757 | 3003 | blocked/suspended. */ |
23860348 | 3004 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 3005 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 3006 | whatever. */ |
c5aa993b | 3007 | }; |
cce74817 JM |
3008 | |
3009 | /* The volume of remote transfers can be limited by submitting | |
3010 | a mask containing bits specifying the desired information. | |
3011 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 3012 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
3013 | |
3014 | #define TAG_THREADID 1 | |
3015 | #define TAG_EXISTS 2 | |
3016 | #define TAG_DISPLAY 4 | |
3017 | #define TAG_THREADNAME 8 | |
c5aa993b | 3018 | #define TAG_MOREDISPLAY 16 |
cce74817 | 3019 | |
23860348 | 3020 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 3021 | |
cecb1912 | 3022 | static const char *unpack_nibble (const char *buf, int *val); |
cce74817 | 3023 | |
cecb1912 | 3024 | static const char *unpack_byte (const char *buf, int *value); |
cce74817 | 3025 | |
a14ed312 | 3026 | static char *pack_int (char *buf, int value); |
cce74817 | 3027 | |
cecb1912 | 3028 | static const char *unpack_int (const char *buf, int *value); |
cce74817 | 3029 | |
cecb1912 | 3030 | static const char *unpack_string (const char *src, char *dest, int length); |
cce74817 | 3031 | |
23860348 | 3032 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 3033 | |
cecb1912 | 3034 | static const char *unpack_threadid (const char *inbuf, threadref *id); |
cce74817 | 3035 | |
23860348 | 3036 | void int_to_threadref (threadref *id, int value); |
cce74817 | 3037 | |
23860348 | 3038 | static int threadref_to_int (threadref *ref); |
cce74817 | 3039 | |
23860348 | 3040 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 3041 | |
23860348 | 3042 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 3043 | |
2bc416ba | 3044 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 3045 | threadref *id); |
cce74817 | 3046 | |
a14ed312 KB |
3047 | static char *pack_threadlist_request (char *pkt, int startflag, |
3048 | int threadcount, | |
23860348 | 3049 | threadref *nextthread); |
cce74817 | 3050 | |
23860348 | 3051 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 3052 | |
82f73884 PA |
3053 | |
3054 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
3055 | buffer we're allowed to write to. Returns | |
3056 | BUF+CHARACTERS_WRITTEN. */ | |
3057 | ||
6b8edb51 PA |
3058 | char * |
3059 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
3060 | { |
3061 | int pid, tid; | |
3062 | struct remote_state *rs = get_remote_state (); | |
3063 | ||
3064 | if (remote_multi_process_p (rs)) | |
3065 | { | |
e99b03dc | 3066 | pid = ptid.pid (); |
82f73884 PA |
3067 | if (pid < 0) |
3068 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
3069 | else | |
3070 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
3071 | } | |
e38504b3 | 3072 | tid = ptid.lwp (); |
82f73884 PA |
3073 | if (tid < 0) |
3074 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
3075 | else | |
3076 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
3077 | ||
3078 | return buf; | |
3079 | } | |
3080 | ||
256642e8 PA |
3081 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
3082 | last parsed char. Returns null_ptid if no thread id is found, and | |
3083 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
3084 | |
3085 | static ptid_t | |
256642e8 | 3086 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 3087 | { |
256642e8 PA |
3088 | const char *p = buf; |
3089 | const char *pp; | |
82f73884 | 3090 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
3091 | |
3092 | if (*p == 'p') | |
3093 | { | |
3094 | /* Multi-process ptid. */ | |
3095 | pp = unpack_varlen_hex (p + 1, &pid); | |
3096 | if (*pp != '.') | |
b37520b6 | 3097 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
3098 | |
3099 | p = pp; | |
3100 | pp = unpack_varlen_hex (p + 1, &tid); | |
3101 | if (obuf) | |
3102 | *obuf = pp; | |
fd79271b | 3103 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3104 | } |
3105 | ||
3106 | /* No multi-process. Just a tid. */ | |
3107 | pp = unpack_varlen_hex (p, &tid); | |
3108 | ||
c9f35b34 KB |
3109 | /* Return null_ptid when no thread id is found. */ |
3110 | if (p == pp) | |
3111 | { | |
3112 | if (obuf) | |
3113 | *obuf = pp; | |
3114 | return null_ptid; | |
3115 | } | |
3116 | ||
82f73884 | 3117 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
3118 | what's in inferior_ptid, unless it's null at this point. If so, |
3119 | then since there's no way to know the pid of the reported | |
3120 | threads, use the magic number. */ | |
d7e15655 | 3121 | if (inferior_ptid == null_ptid) |
e99b03dc | 3122 | pid = magic_null_ptid.pid (); |
ca19bf23 | 3123 | else |
e99b03dc | 3124 | pid = inferior_ptid.pid (); |
82f73884 PA |
3125 | |
3126 | if (obuf) | |
3127 | *obuf = pp; | |
fd79271b | 3128 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3129 | } |
3130 | ||
c906108c | 3131 | static int |
fba45db2 | 3132 | stubhex (int ch) |
c906108c SS |
3133 | { |
3134 | if (ch >= 'a' && ch <= 'f') | |
3135 | return ch - 'a' + 10; | |
3136 | if (ch >= '0' && ch <= '9') | |
3137 | return ch - '0'; | |
3138 | if (ch >= 'A' && ch <= 'F') | |
3139 | return ch - 'A' + 10; | |
3140 | return -1; | |
3141 | } | |
3142 | ||
3143 | static int | |
cecb1912 | 3144 | stub_unpack_int (const char *buff, int fieldlength) |
c906108c SS |
3145 | { |
3146 | int nibble; | |
3147 | int retval = 0; | |
3148 | ||
3149 | while (fieldlength) | |
3150 | { | |
3151 | nibble = stubhex (*buff++); | |
3152 | retval |= nibble; | |
3153 | fieldlength--; | |
3154 | if (fieldlength) | |
3155 | retval = retval << 4; | |
3156 | } | |
3157 | return retval; | |
3158 | } | |
3159 | ||
cecb1912 SM |
3160 | static const char * |
3161 | unpack_nibble (const char *buf, int *val) | |
c906108c | 3162 | { |
b7589f7d | 3163 | *val = fromhex (*buf++); |
c906108c SS |
3164 | return buf; |
3165 | } | |
3166 | ||
cecb1912 SM |
3167 | static const char * |
3168 | unpack_byte (const char *buf, int *value) | |
c906108c SS |
3169 | { |
3170 | *value = stub_unpack_int (buf, 2); | |
3171 | return buf + 2; | |
3172 | } | |
3173 | ||
3174 | static char * | |
fba45db2 | 3175 | pack_int (char *buf, int value) |
c906108c SS |
3176 | { |
3177 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3178 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3179 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3180 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3181 | return buf; | |
3182 | } | |
3183 | ||
cecb1912 SM |
3184 | static const char * |
3185 | unpack_int (const char *buf, int *value) | |
c906108c SS |
3186 | { |
3187 | *value = stub_unpack_int (buf, 8); | |
3188 | return buf + 8; | |
3189 | } | |
3190 | ||
23860348 | 3191 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3192 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3193 | |
3194 | static char * | |
fba45db2 | 3195 | pack_string (char *pkt, char *string) |
c906108c SS |
3196 | { |
3197 | char ch; | |
3198 | int len; | |
3199 | ||
3200 | len = strlen (string); | |
3201 | if (len > 200) | |
23860348 | 3202 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3203 | pkt = pack_hex_byte (pkt, len); |
3204 | while (len-- > 0) | |
3205 | { | |
3206 | ch = *string++; | |
3207 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3208 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3209 | *pkt++ = ch; |
3210 | } | |
3211 | return pkt; | |
3212 | } | |
3213 | #endif /* 0 (unused) */ | |
3214 | ||
cecb1912 SM |
3215 | static const char * |
3216 | unpack_string (const char *src, char *dest, int length) | |
c906108c SS |
3217 | { |
3218 | while (length--) | |
3219 | *dest++ = *src++; | |
3220 | *dest = '\0'; | |
3221 | return src; | |
3222 | } | |
3223 | ||
3224 | static char * | |
fba45db2 | 3225 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3226 | { |
3227 | char *limit; | |
3228 | unsigned char *altid; | |
3229 | ||
3230 | altid = (unsigned char *) id; | |
3231 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3232 | while (pkt < limit) | |
3233 | pkt = pack_hex_byte (pkt, *altid++); | |
3234 | return pkt; | |
3235 | } | |
3236 | ||
3237 | ||
cecb1912 SM |
3238 | static const char * |
3239 | unpack_threadid (const char *inbuf, threadref *id) | |
c906108c SS |
3240 | { |
3241 | char *altref; | |
cecb1912 | 3242 | const char *limit = inbuf + BUF_THREAD_ID_SIZE; |
c906108c SS |
3243 | int x, y; |
3244 | ||
3245 | altref = (char *) id; | |
3246 | ||
3247 | while (inbuf < limit) | |
3248 | { | |
3249 | x = stubhex (*inbuf++); | |
3250 | y = stubhex (*inbuf++); | |
3251 | *altref++ = (x << 4) | y; | |
3252 | } | |
3253 | return inbuf; | |
3254 | } | |
3255 | ||
3256 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3257 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3258 | to use 64bit thread references internally. This is an adapter |
3259 | function. */ | |
3260 | ||
3261 | void | |
fba45db2 | 3262 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3263 | { |
3264 | unsigned char *scan; | |
3265 | ||
3266 | scan = (unsigned char *) id; | |
3267 | { | |
3268 | int i = 4; | |
3269 | while (i--) | |
3270 | *scan++ = 0; | |
3271 | } | |
3272 | *scan++ = (value >> 24) & 0xff; | |
3273 | *scan++ = (value >> 16) & 0xff; | |
3274 | *scan++ = (value >> 8) & 0xff; | |
3275 | *scan++ = (value & 0xff); | |
3276 | } | |
3277 | ||
3278 | static int | |
fba45db2 | 3279 | threadref_to_int (threadref *ref) |
c906108c SS |
3280 | { |
3281 | int i, value = 0; | |
3282 | unsigned char *scan; | |
3283 | ||
cfd77fa1 | 3284 | scan = *ref; |
c906108c SS |
3285 | scan += 4; |
3286 | i = 4; | |
3287 | while (i-- > 0) | |
3288 | value = (value << 8) | ((*scan++) & 0xff); | |
3289 | return value; | |
3290 | } | |
3291 | ||
3292 | static void | |
fba45db2 | 3293 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3294 | { |
3295 | int i; | |
3296 | unsigned char *csrc, *cdest; | |
3297 | ||
3298 | csrc = (unsigned char *) src; | |
3299 | cdest = (unsigned char *) dest; | |
3300 | i = 8; | |
3301 | while (i--) | |
3302 | *cdest++ = *csrc++; | |
3303 | } | |
3304 | ||
3305 | static int | |
fba45db2 | 3306 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3307 | { |
23860348 | 3308 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3309 | #if 0 |
3310 | unsigned char *srcp, *destp; | |
3311 | int i, result; | |
3312 | srcp = (char *) src; | |
3313 | destp = (char *) dest; | |
3314 | ||
3315 | result = 1; | |
3316 | while (i-- > 0) | |
3317 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3318 | return result; | |
3319 | #endif | |
3320 | return 1; | |
3321 | } | |
3322 | ||
3323 | /* | |
c5aa993b JM |
3324 | threadid:1, # always request threadid |
3325 | context_exists:2, | |
3326 | display:4, | |
3327 | unique_name:8, | |
3328 | more_display:16 | |
3329 | */ | |
c906108c SS |
3330 | |
3331 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3332 | ||
3333 | static char * | |
fba45db2 | 3334 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3335 | { |
23860348 MS |
3336 | *pkt++ = 'q'; /* Info Query */ |
3337 | *pkt++ = 'P'; /* process or thread info */ | |
3338 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3339 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3340 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3341 | return pkt; |
3342 | } | |
3343 | ||
23860348 | 3344 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3345 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3346 | add more fields as time goes by. */ |
c906108c | 3347 | |
23860348 | 3348 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3349 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3350 | fetch registers and its stack? */ |
c5aa993b | 3351 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3352 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3353 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3354 | the process. */ |
c906108c | 3355 | |
6b8edb51 | 3356 | int |
cecb1912 | 3357 | remote_target::remote_unpack_thread_info_response (const char *pkt, |
6b8edb51 PA |
3358 | threadref *expectedref, |
3359 | gdb_ext_thread_info *info) | |
c906108c | 3360 | { |
d01949b6 | 3361 | struct remote_state *rs = get_remote_state (); |
c906108c | 3362 | int mask, length; |
cfd77fa1 | 3363 | int tag; |
c906108c | 3364 | threadref ref; |
cecb1912 | 3365 | const char *limit = pkt + rs->buf.size (); /* Plausible parsing limit. */ |
c906108c SS |
3366 | int retval = 1; |
3367 | ||
23860348 | 3368 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3369 | info->active = 0; |
3370 | info->display[0] = '\0'; | |
3371 | info->shortname[0] = '\0'; | |
3372 | info->more_display[0] = '\0'; | |
3373 | ||
23860348 MS |
3374 | /* Assume the characters indicating the packet type have been |
3375 | stripped. */ | |
c906108c SS |
3376 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3377 | pkt = unpack_threadid (pkt, &ref); | |
3378 | ||
3379 | if (mask == 0) | |
8a3fe4f8 | 3380 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3381 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3382 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3383 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3384 | return 0; |
3385 | } | |
3386 | copy_threadref (&info->threadid, &ref); | |
3387 | ||
405feb71 | 3388 | /* Loop on tagged fields , try to bail if something goes wrong. */ |
c906108c | 3389 | |
23860348 MS |
3390 | /* Packets are terminated with nulls. */ |
3391 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3392 | { |
3393 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3394 | pkt = unpack_byte (pkt, &length); /* length */ |
3395 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3396 | { |
8a3fe4f8 | 3397 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3398 | retval = 0; |
3399 | break; | |
3400 | } | |
3401 | if (tag == TAG_THREADID) | |
3402 | { | |
3403 | if (length != 16) | |
3404 | { | |
8a3fe4f8 | 3405 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3406 | retval = 0; |
3407 | break; | |
3408 | } | |
3409 | pkt = unpack_threadid (pkt, &ref); | |
3410 | mask = mask & ~TAG_THREADID; | |
3411 | continue; | |
3412 | } | |
3413 | if (tag == TAG_EXISTS) | |
3414 | { | |
3415 | info->active = stub_unpack_int (pkt, length); | |
3416 | pkt += length; | |
3417 | mask = mask & ~(TAG_EXISTS); | |
3418 | if (length > 8) | |
3419 | { | |
8a3fe4f8 | 3420 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3421 | retval = 0; |
3422 | break; | |
3423 | } | |
3424 | continue; | |
3425 | } | |
3426 | if (tag == TAG_THREADNAME) | |
3427 | { | |
3428 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3429 | mask = mask & ~TAG_THREADNAME; | |
3430 | continue; | |
3431 | } | |
3432 | if (tag == TAG_DISPLAY) | |
3433 | { | |
3434 | pkt = unpack_string (pkt, &info->display[0], length); | |
3435 | mask = mask & ~TAG_DISPLAY; | |
3436 | continue; | |
3437 | } | |
3438 | if (tag == TAG_MOREDISPLAY) | |
3439 | { | |
3440 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3441 | mask = mask & ~TAG_MOREDISPLAY; | |
3442 | continue; | |
3443 | } | |
8a3fe4f8 | 3444 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3445 | break; /* Not a tag we know about. */ |
c906108c SS |
3446 | } |
3447 | return retval; | |
3448 | } | |
3449 | ||
6b8edb51 PA |
3450 | int |
3451 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3452 | int fieldset, | |
3453 | gdb_ext_thread_info *info) | |
c906108c | 3454 | { |
d01949b6 | 3455 | struct remote_state *rs = get_remote_state (); |
c906108c | 3456 | int result; |
c906108c | 3457 | |
8d64371b | 3458 | pack_threadinfo_request (rs->buf.data (), fieldset, threadid); |
2e9f7625 | 3459 | putpkt (rs->buf); |
8d64371b | 3460 | getpkt (&rs->buf, 0); |
3084dd77 PA |
3461 | |
3462 | if (rs->buf[0] == '\0') | |
3463 | return 0; | |
3464 | ||
8d64371b | 3465 | result = remote_unpack_thread_info_response (&rs->buf[2], |
23860348 | 3466 | threadid, info); |
c906108c SS |
3467 | return result; |
3468 | } | |
3469 | ||
c906108c SS |
3470 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3471 | ||
3472 | static char * | |
fba45db2 KB |
3473 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3474 | threadref *nextthread) | |
c906108c SS |
3475 | { |
3476 | *pkt++ = 'q'; /* info query packet */ | |
3477 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3478 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3479 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3480 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3481 | *pkt = '\0'; | |
3482 | return pkt; | |
3483 | } | |
3484 | ||
3485 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3486 | ||
6b8edb51 | 3487 | int |
cecb1912 | 3488 | remote_target::parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
3489 | threadref *original_echo, |
3490 | threadref *resultlist, | |
3491 | int *doneflag) | |
c906108c | 3492 | { |
d01949b6 | 3493 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3494 | int count, resultcount, done; |
3495 | ||
3496 | resultcount = 0; | |
3497 | /* Assume the 'q' and 'M chars have been stripped. */ | |
cecb1912 | 3498 | const char *limit = pkt + (rs->buf.size () - BUF_THREAD_ID_SIZE); |
23860348 | 3499 | /* done parse past here */ |
c906108c SS |
3500 | pkt = unpack_byte (pkt, &count); /* count field */ |
3501 | pkt = unpack_nibble (pkt, &done); | |
3502 | /* The first threadid is the argument threadid. */ | |
3503 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3504 | while ((count-- > 0) && (pkt < limit)) | |
3505 | { | |
3506 | pkt = unpack_threadid (pkt, resultlist++); | |
3507 | if (resultcount++ >= result_limit) | |
3508 | break; | |
3509 | } | |
3510 | if (doneflag) | |
3511 | *doneflag = done; | |
3512 | return resultcount; | |
3513 | } | |
3514 | ||
6dc54d91 PA |
3515 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3516 | qL packet is not supported, 0 on error and 1 on success. */ | |
3517 | ||
6b8edb51 PA |
3518 | int |
3519 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3520 | int result_limit, int *done, int *result_count, | |
3521 | threadref *threadlist) | |
c906108c | 3522 | { |
d01949b6 | 3523 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3524 | int result = 1; |
3525 | ||
405feb71 | 3526 | /* Truncate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3527 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3528 | >= get_remote_packet_size ()) | |
ea9c271d | 3529 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3530 | |
8d64371b TT |
3531 | pack_threadlist_request (rs->buf.data (), startflag, result_limit, |
3532 | nextthread); | |
6d820c5c | 3533 | putpkt (rs->buf); |
8d64371b TT |
3534 | getpkt (&rs->buf, 0); |
3535 | if (rs->buf[0] == '\0') | |
6dc54d91 PA |
3536 | { |
3537 | /* Packet not supported. */ | |
3538 | return -1; | |
3539 | } | |
3540 | ||
3541 | *result_count = | |
8d64371b | 3542 | parse_threadlist_response (&rs->buf[2], result_limit, |
6dc54d91 | 3543 | &rs->echo_nextthread, threadlist, done); |
c906108c | 3544 | |
0d031856 | 3545 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3546 | { |
23860348 | 3547 | /* FIXME: This is a good reason to drop the packet. */ |
405feb71 TV |
3548 | /* Possibly, there is a duplicate response. */ |
3549 | /* Possibilities : | |
dda83cd7 SM |
3550 | retransmit immediatly - race conditions |
3551 | retransmit after timeout - yes | |
3552 | exit | |
3553 | wait for packet, then exit | |
c906108c | 3554 | */ |
8a3fe4f8 | 3555 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3556 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3557 | } |
3558 | if (*result_count <= 0) | |
3559 | { | |
3560 | if (*done != 1) | |
3561 | { | |
8a3fe4f8 | 3562 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3563 | result = 0; |
3564 | } | |
3565 | return result; /* break; */ | |
3566 | } | |
3567 | if (*result_count > result_limit) | |
3568 | { | |
3569 | *result_count = 0; | |
8a3fe4f8 | 3570 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3571 | return 0; |
3572 | } | |
3573 | return result; | |
3574 | } | |
3575 | ||
6dc54d91 PA |
3576 | /* Fetch the list of remote threads, with the qL packet, and call |
3577 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3578 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3579 | STEPFUNCTION returns false. If the packet is not supported, | |
3580 | returns -1. */ | |
c906108c | 3581 | |
6b8edb51 PA |
3582 | int |
3583 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3584 | void *context, int looplimit) | |
c906108c | 3585 | { |
0d031856 | 3586 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3587 | int done, i, result_count; |
3588 | int startflag = 1; | |
3589 | int result = 1; | |
3590 | int loopcount = 0; | |
c906108c SS |
3591 | |
3592 | done = 0; | |
3593 | while (!done) | |
3594 | { | |
3595 | if (loopcount++ > looplimit) | |
3596 | { | |
3597 | result = 0; | |
8a3fe4f8 | 3598 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3599 | break; |
3600 | } | |
6dc54d91 PA |
3601 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3602 | MAXTHREADLISTRESULTS, | |
3603 | &done, &result_count, | |
3604 | rs->resultthreadlist); | |
3605 | if (result <= 0) | |
3606 | break; | |
23860348 | 3607 | /* Clear for later iterations. */ |
c906108c SS |
3608 | startflag = 0; |
3609 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3610 | if (result_count >= 1) | |
0d031856 TT |
3611 | copy_threadref (&rs->nextthread, |
3612 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3613 | i = 0; |
3614 | while (result_count--) | |
6dc54d91 PA |
3615 | { |
3616 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3617 | { | |
3618 | result = 0; | |
3619 | break; | |
3620 | } | |
3621 | } | |
c906108c SS |
3622 | } |
3623 | return result; | |
3624 | } | |
3625 | ||
6dc54d91 PA |
3626 | /* A thread found on the remote target. */ |
3627 | ||
21fe1c75 | 3628 | struct thread_item |
6dc54d91 | 3629 | { |
21fe1c75 SM |
3630 | explicit thread_item (ptid_t ptid_) |
3631 | : ptid (ptid_) | |
3632 | {} | |
3633 | ||
3634 | thread_item (thread_item &&other) = default; | |
3635 | thread_item &operator= (thread_item &&other) = default; | |
3636 | ||
3637 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3638 | ||
6dc54d91 PA |
3639 | /* The thread's PTID. */ |
3640 | ptid_t ptid; | |
3641 | ||
21fe1c75 SM |
3642 | /* The thread's extra info. */ |
3643 | std::string extra; | |
6dc54d91 | 3644 | |
21fe1c75 SM |
3645 | /* The thread's name. */ |
3646 | std::string name; | |
79efa585 | 3647 | |
6dc54d91 | 3648 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3649 | int core = -1; |
f6327dcb KB |
3650 | |
3651 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3652 | gdb::byte_vector thread_handle; |
21fe1c75 | 3653 | }; |
6dc54d91 PA |
3654 | |
3655 | /* Context passed around to the various methods listing remote | |
3656 | threads. As new threads are found, they're added to the ITEMS | |
3657 | vector. */ | |
3658 | ||
3659 | struct threads_listing_context | |
3660 | { | |
21fe1c75 SM |
3661 | /* Return true if this object contains an entry for a thread with ptid |
3662 | PTID. */ | |
6dc54d91 | 3663 | |
21fe1c75 SM |
3664 | bool contains_thread (ptid_t ptid) const |
3665 | { | |
3666 | auto match_ptid = [&] (const thread_item &item) | |
3667 | { | |
3668 | return item.ptid == ptid; | |
3669 | }; | |
80134cf5 | 3670 | |
21fe1c75 SM |
3671 | auto it = std::find_if (this->items.begin (), |
3672 | this->items.end (), | |
3673 | match_ptid); | |
80134cf5 | 3674 | |
21fe1c75 SM |
3675 | return it != this->items.end (); |
3676 | } | |
80134cf5 | 3677 | |
21fe1c75 | 3678 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3679 | |
21fe1c75 SM |
3680 | void remove_thread (ptid_t ptid) |
3681 | { | |
3682 | auto match_ptid = [&] (const thread_item &item) | |
3683 | { | |
dda83cd7 | 3684 | return item.ptid == ptid; |
21fe1c75 | 3685 | }; |
cbb8991c | 3686 | |
21fe1c75 SM |
3687 | auto it = std::remove_if (this->items.begin (), |
3688 | this->items.end (), | |
3689 | match_ptid); | |
cbb8991c | 3690 | |
21fe1c75 SM |
3691 | if (it != this->items.end ()) |
3692 | this->items.erase (it); | |
3693 | } | |
3694 | ||
3695 | /* The threads found on the remote target. */ | |
3696 | std::vector<thread_item> items; | |
3697 | }; | |
cbb8991c | 3698 | |
c906108c | 3699 | static int |
6dc54d91 | 3700 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3701 | { |
19ba03f4 SM |
3702 | struct threads_listing_context *context |
3703 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3704 | int pid = inferior_ptid.pid (); |
3705 | int lwp = threadref_to_int (ref); | |
3706 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3707 | |
21fe1c75 | 3708 | context->items.emplace_back (ptid); |
6dc54d91 | 3709 | |
c906108c SS |
3710 | return 1; /* continue iterator */ |
3711 | } | |
3712 | ||
3713 | #define CRAZY_MAX_THREADS 1000 | |
3714 | ||
6b8edb51 PA |
3715 | ptid_t |
3716 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3717 | { |
d01949b6 | 3718 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3719 | |
3720 | putpkt ("qC"); | |
8d64371b | 3721 | getpkt (&rs->buf, 0); |
2e9f7625 | 3722 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3723 | { |
256642e8 | 3724 | const char *obuf; |
c9f35b34 KB |
3725 | ptid_t result; |
3726 | ||
3727 | result = read_ptid (&rs->buf[2], &obuf); | |
2189c312 SM |
3728 | if (*obuf != '\0') |
3729 | remote_debug_printf ("warning: garbage in qC reply"); | |
c9f35b34 KB |
3730 | |
3731 | return result; | |
3732 | } | |
c906108c SS |
3733 | else |
3734 | return oldpid; | |
3735 | } | |
3736 | ||
6dc54d91 | 3737 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3738 | |
6b8edb51 PA |
3739 | int |
3740 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3741 | { |
6dc54d91 PA |
3742 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3743 | CRAZY_MAX_THREADS) >= 0) | |
3744 | return 1; | |
3745 | ||
3746 | return 0; | |
c906108c SS |
3747 | } |
3748 | ||
dc146f7c VP |
3749 | #if defined(HAVE_LIBEXPAT) |
3750 | ||
dc146f7c VP |
3751 | static void |
3752 | start_thread (struct gdb_xml_parser *parser, | |
3753 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3754 | void *user_data, |
3755 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3756 | { |
19ba03f4 SM |
3757 | struct threads_listing_context *data |
3758 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3759 | struct gdb_xml_value *attr; |
dc146f7c | 3760 | |
4d0fdd9b | 3761 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3762 | ptid_t ptid = read_ptid (id, NULL); |
3763 | ||
3764 | data->items.emplace_back (ptid); | |
3765 | thread_item &item = data->items.back (); | |
dc146f7c | 3766 | |
3d2c1d41 PA |
3767 | attr = xml_find_attribute (attributes, "core"); |
3768 | if (attr != NULL) | |
4d0fdd9b | 3769 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3770 | |
79efa585 | 3771 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3772 | if (attr != NULL) |
4d0fdd9b | 3773 | item.name = (const char *) attr->value.get (); |
79efa585 | 3774 | |
f6327dcb KB |
3775 | attr = xml_find_attribute (attributes, "handle"); |
3776 | if (attr != NULL) | |
4d0fdd9b | 3777 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3778 | } |
3779 | ||
3780 | static void | |
3781 | end_thread (struct gdb_xml_parser *parser, | |
3782 | const struct gdb_xml_element *element, | |
3783 | void *user_data, const char *body_text) | |
3784 | { | |
19ba03f4 SM |
3785 | struct threads_listing_context *data |
3786 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3787 | |
21fe1c75 SM |
3788 | if (body_text != NULL && *body_text != '\0') |
3789 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3790 | } |
3791 | ||
3792 | const struct gdb_xml_attribute thread_attributes[] = { | |
3793 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3794 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3795 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3796 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3797 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3798 | }; | |
3799 | ||
3800 | const struct gdb_xml_element thread_children[] = { | |
3801 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3802 | }; | |
3803 | ||
3804 | const struct gdb_xml_element threads_children[] = { | |
3805 | { "thread", thread_attributes, thread_children, | |
3806 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3807 | start_thread, end_thread }, | |
3808 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3809 | }; | |
3810 | ||
3811 | const struct gdb_xml_element threads_elements[] = { | |
3812 | { "threads", NULL, threads_children, | |
3813 | GDB_XML_EF_NONE, NULL, NULL }, | |
3814 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3815 | }; | |
3816 | ||
3817 | #endif | |
3818 | ||
6dc54d91 | 3819 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3820 | |
6b8edb51 PA |
3821 | int |
3822 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 3823 | { |
dc146f7c | 3824 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3825 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3826 | { |
9018be22 | 3827 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 3828 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3829 | |
9018be22 | 3830 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3831 | { |
6dc54d91 | 3832 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3833 | threads_elements, xml->data (), context); |
dc146f7c VP |
3834 | } |
3835 | ||
6dc54d91 | 3836 | return 1; |
dc146f7c VP |
3837 | } |
3838 | #endif | |
3839 | ||
6dc54d91 PA |
3840 | return 0; |
3841 | } | |
3842 | ||
3843 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3844 | ||
6b8edb51 PA |
3845 | int |
3846 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
3847 | { |
3848 | struct remote_state *rs = get_remote_state (); | |
3849 | ||
b80fafe3 | 3850 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3851 | { |
256642e8 | 3852 | const char *bufp; |
6dc54d91 | 3853 | |
9d1f7ab2 | 3854 | putpkt ("qfThreadInfo"); |
8d64371b TT |
3855 | getpkt (&rs->buf, 0); |
3856 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3857 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3858 | { |
9d1f7ab2 MS |
3859 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3860 | { | |
3861 | do | |
3862 | { | |
21fe1c75 SM |
3863 | ptid_t ptid = read_ptid (bufp, &bufp); |
3864 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3865 | } |
3866 | while (*bufp++ == ','); /* comma-separated list */ | |
3867 | putpkt ("qsThreadInfo"); | |
8d64371b TT |
3868 | getpkt (&rs->buf, 0); |
3869 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3870 | } |
6dc54d91 PA |
3871 | return 1; |
3872 | } | |
3873 | else | |
3874 | { | |
3875 | /* Packet not recognized. */ | |
3876 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3877 | } |
3878 | } | |
3879 | ||
6dc54d91 PA |
3880 | return 0; |
3881 | } | |
3882 | ||
a05575d3 TBA |
3883 | /* Return true if INF only has one non-exited thread. */ |
3884 | ||
3885 | static bool | |
3886 | has_single_non_exited_thread (inferior *inf) | |
3887 | { | |
3888 | int count = 0; | |
3889 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) | |
3890 | if (++count > 1) | |
3891 | break; | |
3892 | return count == 1; | |
3893 | } | |
3894 | ||
e8032dde | 3895 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3896 | targets. */ |
3897 | ||
f6ac5f3d PA |
3898 | void |
3899 | remote_target::update_thread_list () | |
6dc54d91 | 3900 | { |
6dc54d91 | 3901 | struct threads_listing_context context; |
ab970af1 | 3902 | int got_list = 0; |
e8032dde | 3903 | |
6dc54d91 PA |
3904 | /* We have a few different mechanisms to fetch the thread list. Try |
3905 | them all, starting with the most preferred one first, falling | |
3906 | back to older methods. */ | |
6b8edb51 PA |
3907 | if (remote_get_threads_with_qxfer (&context) |
3908 | || remote_get_threads_with_qthreadinfo (&context) | |
3909 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 3910 | { |
ab970af1 PA |
3911 | got_list = 1; |
3912 | ||
21fe1c75 | 3913 | if (context.items.empty () |
f6ac5f3d | 3914 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3915 | { |
3916 | /* Some targets don't really support threads, but still | |
3917 | reply an (empty) thread list in response to the thread | |
3918 | listing packets, instead of replying "packet not | |
3919 | supported". Exit early so we don't delete the main | |
3920 | thread. */ | |
7d1a114c PA |
3921 | return; |
3922 | } | |
3923 | ||
ab970af1 PA |
3924 | /* CONTEXT now holds the current thread list on the remote |
3925 | target end. Delete GDB-side threads no longer found on the | |
3926 | target. */ | |
08036331 | 3927 | for (thread_info *tp : all_threads_safe ()) |
cbb8991c | 3928 | { |
5b6d1e4f PA |
3929 | if (tp->inf->process_target () != this) |
3930 | continue; | |
3931 | ||
21fe1c75 | 3932 | if (!context.contains_thread (tp->ptid)) |
ab970af1 | 3933 | { |
a05575d3 TBA |
3934 | /* Do not remove the thread if it is the last thread in |
3935 | the inferior. This situation happens when we have a | |
3936 | pending exit process status to process. Otherwise we | |
3937 | may end up with a seemingly live inferior (i.e. pid | |
3938 | != 0) that has no threads. */ | |
3939 | if (has_single_non_exited_thread (tp->inf)) | |
3940 | continue; | |
3941 | ||
ab970af1 | 3942 | /* Not found. */ |
00431a78 | 3943 | delete_thread (tp); |
ab970af1 | 3944 | } |
cbb8991c DB |
3945 | } |
3946 | ||
3947 | /* Remove any unreported fork child threads from CONTEXT so | |
3948 | that we don't interfere with follow fork, which is where | |
3949 | creation of such threads is handled. */ | |
3950 | remove_new_fork_children (&context); | |
74531fed | 3951 | |
ab970af1 | 3952 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3953 | for (thread_item &item : context.items) |
6dc54d91 | 3954 | { |
21fe1c75 | 3955 | if (item.ptid != null_ptid) |
6dc54d91 | 3956 | { |
6dc54d91 | 3957 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3958 | executing until proven otherwise with a stop reply. |
3959 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3960 | stopped. */ |
8a82de58 | 3961 | bool executing = target_is_non_stop_p (); |
6dc54d91 | 3962 | |
21fe1c75 | 3963 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3964 | |
5b6d1e4f | 3965 | thread_info *tp = find_thread_ptid (this, item.ptid); |
00431a78 | 3966 | remote_thread_info *info = get_remote_thread_info (tp); |
21fe1c75 | 3967 | info->core = item.core; |
7aabaf9d SM |
3968 | info->extra = std::move (item.extra); |
3969 | info->name = std::move (item.name); | |
3970 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3971 | } |
3972 | } | |
3973 | } | |
3974 | ||
ab970af1 PA |
3975 | if (!got_list) |
3976 | { | |
3977 | /* If no thread listing method is supported, then query whether | |
3978 | each known thread is alive, one by one, with the T packet. | |
3979 | If the target doesn't support threads at all, then this is a | |
3980 | no-op. See remote_thread_alive. */ | |
3981 | prune_threads (); | |
3982 | } | |
9d1f7ab2 MS |
3983 | } |
3984 | ||
802188a7 | 3985 | /* |
9d1f7ab2 MS |
3986 | * Collect a descriptive string about the given thread. |
3987 | * The target may say anything it wants to about the thread | |
3988 | * (typically info about its blocked / runnable state, name, etc.). | |
3989 | * This string will appear in the info threads display. | |
802188a7 | 3990 | * |
9d1f7ab2 MS |
3991 | * Optional: targets are not required to implement this function. |
3992 | */ | |
3993 | ||
f6ac5f3d PA |
3994 | const char * |
3995 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 3996 | { |
d01949b6 | 3997 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3998 | int set; |
3999 | threadref id; | |
4000 | struct gdb_ext_thread_info threadinfo; | |
9d1f7ab2 | 4001 | |
5d93a237 | 4002 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 4003 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4004 | _("remote_threads_extra_info")); |
9d1f7ab2 | 4005 | |
d7e15655 | 4006 | if (tp->ptid == magic_null_ptid |
e38504b3 | 4007 | || (tp->ptid.pid () != 0 && tp->ptid.lwp () == 0)) |
60e569b9 PA |
4008 | /* This is the main thread which was added by GDB. The remote |
4009 | server doesn't know about it. */ | |
4010 | return NULL; | |
4011 | ||
c76a8ea3 PA |
4012 | std::string &extra = get_remote_thread_info (tp)->extra; |
4013 | ||
4014 | /* If already have cached info, use it. */ | |
4015 | if (!extra.empty ()) | |
4016 | return extra.c_str (); | |
4017 | ||
4082afcc | 4018 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 4019 | { |
c76a8ea3 PA |
4020 | /* If we're using qXfer:threads:read, then the extra info is |
4021 | included in the XML. So if we didn't have anything cached, | |
4022 | it's because there's really no extra info. */ | |
4023 | return NULL; | |
dc146f7c VP |
4024 | } |
4025 | ||
b80fafe3 | 4026 | if (rs->use_threadextra_query) |
9d1f7ab2 | 4027 | { |
8d64371b TT |
4028 | char *b = rs->buf.data (); |
4029 | char *endb = b + get_remote_packet_size (); | |
82f73884 PA |
4030 | |
4031 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
4032 | b += strlen (b); | |
4033 | write_ptid (b, endb, tp->ptid); | |
4034 | ||
2e9f7625 | 4035 | putpkt (rs->buf); |
8d64371b | 4036 | getpkt (&rs->buf, 0); |
2e9f7625 | 4037 | if (rs->buf[0] != 0) |
9d1f7ab2 | 4038 | { |
8d64371b TT |
4039 | extra.resize (strlen (rs->buf.data ()) / 2); |
4040 | hex2bin (rs->buf.data (), (gdb_byte *) &extra[0], extra.size ()); | |
c76a8ea3 | 4041 | return extra.c_str (); |
9d1f7ab2 | 4042 | } |
0f71a2f6 | 4043 | } |
9d1f7ab2 MS |
4044 | |
4045 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 4046 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
4047 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
4048 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
e38504b3 | 4049 | int_to_threadref (&id, tp->ptid.lwp ()); |
9d1f7ab2 MS |
4050 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
4051 | if (threadinfo.active) | |
0f71a2f6 | 4052 | { |
9d1f7ab2 | 4053 | if (*threadinfo.shortname) |
c76a8ea3 | 4054 | string_appendf (extra, " Name: %s", threadinfo.shortname); |
9d1f7ab2 | 4055 | if (*threadinfo.display) |
c76a8ea3 PA |
4056 | { |
4057 | if (!extra.empty ()) | |
4058 | extra += ','; | |
4059 | string_appendf (extra, " State: %s", threadinfo.display); | |
4060 | } | |
9d1f7ab2 | 4061 | if (*threadinfo.more_display) |
c5aa993b | 4062 | { |
c76a8ea3 PA |
4063 | if (!extra.empty ()) |
4064 | extra += ','; | |
4065 | string_appendf (extra, " Priority: %s", threadinfo.more_display); | |
c5aa993b | 4066 | } |
c76a8ea3 | 4067 | return extra.c_str (); |
0f71a2f6 | 4068 | } |
9d1f7ab2 | 4069 | return NULL; |
0f71a2f6 | 4070 | } |
c906108c | 4071 | \f |
c5aa993b | 4072 | |
f6ac5f3d PA |
4073 | bool |
4074 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
4075 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
4076 | { |
4077 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 4078 | char *p = rs->buf.data (); |
0fb4aa4b | 4079 | |
bba74b36 | 4080 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
4081 | p += strlen (p); |
4082 | p += hexnumstr (p, addr); | |
4083 | putpkt (rs->buf); | |
8d64371b TT |
4084 | getpkt (&rs->buf, 0); |
4085 | p = rs->buf.data (); | |
0fb4aa4b PA |
4086 | |
4087 | if (*p == 'E') | |
4088 | error (_("Remote failure reply: %s"), p); | |
4089 | ||
4090 | if (*p++ == 'm') | |
4091 | { | |
256642e8 | 4092 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 4093 | return true; |
0fb4aa4b PA |
4094 | } |
4095 | ||
5d9310c4 | 4096 | return false; |
0fb4aa4b PA |
4097 | } |
4098 | ||
f6ac5f3d PA |
4099 | std::vector<static_tracepoint_marker> |
4100 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
4101 | { |
4102 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 4103 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 4104 | const char *p; |
5d9310c4 | 4105 | static_tracepoint_marker marker; |
0fb4aa4b PA |
4106 | |
4107 | /* Ask for a first packet of static tracepoint marker | |
4108 | definition. */ | |
4109 | putpkt ("qTfSTM"); | |
8d64371b TT |
4110 | getpkt (&rs->buf, 0); |
4111 | p = rs->buf.data (); | |
0fb4aa4b PA |
4112 | if (*p == 'E') |
4113 | error (_("Remote failure reply: %s"), p); | |
4114 | ||
0fb4aa4b PA |
4115 | while (*p++ == 'm') |
4116 | { | |
0fb4aa4b PA |
4117 | do |
4118 | { | |
5d9310c4 | 4119 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 4120 | |
5d9310c4 SM |
4121 | if (strid == NULL || marker.str_id == strid) |
4122 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
4123 | } |
4124 | while (*p++ == ','); /* comma-separated list */ | |
4125 | /* Ask for another packet of static tracepoint definition. */ | |
4126 | putpkt ("qTsSTM"); | |
8d64371b TT |
4127 | getpkt (&rs->buf, 0); |
4128 | p = rs->buf.data (); | |
0fb4aa4b PA |
4129 | } |
4130 | ||
0fb4aa4b PA |
4131 | return markers; |
4132 | } | |
4133 | ||
4134 | \f | |
10760264 JB |
4135 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
4136 | ||
f6ac5f3d PA |
4137 | ptid_t |
4138 | remote_target::get_ada_task_ptid (long lwp, long thread) | |
10760264 | 4139 | { |
e99b03dc | 4140 | return ptid_t (inferior_ptid.pid (), lwp, 0); |
10760264 JB |
4141 | } |
4142 | \f | |
4143 | ||
24b06219 | 4144 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 4145 | |
6b8edb51 PA |
4146 | void |
4147 | remote_target::extended_remote_restart () | |
c906108c | 4148 | { |
d01949b6 | 4149 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4150 | |
4151 | /* Send the restart command; for reasons I don't understand the | |
4152 | remote side really expects a number after the "R". */ | |
8d64371b | 4153 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "R%x", 0); |
6d820c5c | 4154 | putpkt (rs->buf); |
c906108c | 4155 | |
ad9a8f3f | 4156 | remote_fileio_reset (); |
c906108c SS |
4157 | } |
4158 | \f | |
4159 | /* Clean up connection to a remote debugger. */ | |
4160 | ||
f6ac5f3d PA |
4161 | void |
4162 | remote_target::close () | |
c906108c | 4163 | { |
048094ac | 4164 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4165 | terminal_ours (); |
ce5ce7ed | 4166 | |
6b8edb51 PA |
4167 | trace_reset_local_state (); |
4168 | ||
4169 | delete this; | |
4170 | } | |
4171 | ||
4172 | remote_target::~remote_target () | |
4173 | { | |
4174 | struct remote_state *rs = get_remote_state (); | |
4175 | ||
4176 | /* Check for NULL because we may get here with a partially | |
4177 | constructed target/connection. */ | |
4178 | if (rs->remote_desc == nullptr) | |
4179 | return; | |
4180 | ||
4181 | serial_close (rs->remote_desc); | |
4182 | ||
4183 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4184 | everything of this target. */ |
6b8edb51 | 4185 | discard_pending_stop_replies_in_queue (); |
74531fed | 4186 | |
6b8edb51 PA |
4187 | if (rs->remote_async_inferior_event_token) |
4188 | delete_async_event_handler (&rs->remote_async_inferior_event_token); | |
722247f1 | 4189 | |
97dfbadd | 4190 | delete rs->notif_state; |
c906108c SS |
4191 | } |
4192 | ||
23860348 | 4193 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4194 | |
6b8edb51 PA |
4195 | void |
4196 | remote_target::get_offsets () | |
c906108c | 4197 | { |
d01949b6 | 4198 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4199 | char *buf; |
085dd6e6 | 4200 | char *ptr; |
31d99776 DJ |
4201 | int lose, num_segments = 0, do_sections, do_segments; |
4202 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
31d99776 | 4203 | |
a42d7dd8 | 4204 | if (current_program_space->symfile_object_file == NULL) |
31d99776 | 4205 | return; |
c906108c SS |
4206 | |
4207 | putpkt ("qOffsets"); | |
8d64371b TT |
4208 | getpkt (&rs->buf, 0); |
4209 | buf = rs->buf.data (); | |
c906108c SS |
4210 | |
4211 | if (buf[0] == '\000') | |
4212 | return; /* Return silently. Stub doesn't support | |
23860348 | 4213 | this command. */ |
c906108c SS |
4214 | if (buf[0] == 'E') |
4215 | { | |
8a3fe4f8 | 4216 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4217 | return; |
4218 | } | |
4219 | ||
4220 | /* Pick up each field in turn. This used to be done with scanf, but | |
4221 | scanf will make trouble if CORE_ADDR size doesn't match | |
4222 | conversion directives correctly. The following code will work | |
4223 | with any size of CORE_ADDR. */ | |
4224 | text_addr = data_addr = bss_addr = 0; | |
4225 | ptr = buf; | |
4226 | lose = 0; | |
4227 | ||
61012eef | 4228 | if (startswith (ptr, "Text=")) |
c906108c SS |
4229 | { |
4230 | ptr += 5; | |
4231 | /* Don't use strtol, could lose on big values. */ | |
4232 | while (*ptr && *ptr != ';') | |
4233 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4234 | |
61012eef | 4235 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4236 | { |
4237 | ptr += 6; | |
4238 | while (*ptr && *ptr != ';') | |
4239 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4240 | } | |
4241 | else | |
4242 | lose = 1; | |
4243 | ||
61012eef | 4244 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4245 | { |
4246 | ptr += 5; | |
4247 | while (*ptr && *ptr != ';') | |
4248 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4249 | |
31d99776 DJ |
4250 | if (bss_addr != data_addr) |
4251 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4252 | } | |
4253 | else | |
4254 | lose = 1; | |
4255 | } | |
61012eef | 4256 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4257 | { |
31d99776 DJ |
4258 | ptr += 8; |
4259 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4260 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4261 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4262 | num_segments = 1; | |
4263 | ||
61012eef | 4264 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4265 | { |
4266 | ptr += 9; | |
4267 | while (*ptr && *ptr != ';') | |
4268 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4269 | num_segments++; | |
4270 | } | |
c906108c SS |
4271 | } |
4272 | else | |
4273 | lose = 1; | |
4274 | ||
4275 | if (lose) | |
8a3fe4f8 | 4276 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4277 | else if (*ptr != '\0') |
4278 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4279 | |
a42d7dd8 TT |
4280 | objfile *objf = current_program_space->symfile_object_file; |
4281 | section_offsets offs = objf->section_offsets; | |
c906108c | 4282 | |
a42d7dd8 | 4283 | symfile_segment_data_up data = get_symfile_segment_data (objf->obfd); |
31d99776 DJ |
4284 | do_segments = (data != NULL); |
4285 | do_sections = num_segments == 0; | |
c906108c | 4286 | |
28c32713 | 4287 | if (num_segments > 0) |
31d99776 | 4288 | { |
31d99776 DJ |
4289 | segments[0] = text_addr; |
4290 | segments[1] = data_addr; | |
4291 | } | |
28c32713 JB |
4292 | /* If we have two segments, we can still try to relocate everything |
4293 | by assuming that the .text and .data offsets apply to the whole | |
4294 | text and data segments. Convert the offsets given in the packet | |
4295 | to base addresses for symfile_map_offsets_to_segments. */ | |
68b888ff | 4296 | else if (data != nullptr && data->segments.size () == 2) |
28c32713 | 4297 | { |
68b888ff SM |
4298 | segments[0] = data->segments[0].base + text_addr; |
4299 | segments[1] = data->segments[1].base + data_addr; | |
28c32713 JB |
4300 | num_segments = 2; |
4301 | } | |
8d385431 DJ |
4302 | /* If the object file has only one segment, assume that it is text |
4303 | rather than data; main programs with no writable data are rare, | |
4304 | but programs with no code are useless. Of course the code might | |
4305 | have ended up in the data segment... to detect that we would need | |
4306 | the permissions here. */ | |
68b888ff | 4307 | else if (data && data->segments.size () == 1) |
8d385431 | 4308 | { |
68b888ff | 4309 | segments[0] = data->segments[0].base + text_addr; |
8d385431 DJ |
4310 | num_segments = 1; |
4311 | } | |
28c32713 JB |
4312 | /* There's no way to relocate by segment. */ |
4313 | else | |
4314 | do_segments = 0; | |
31d99776 DJ |
4315 | |
4316 | if (do_segments) | |
4317 | { | |
a42d7dd8 | 4318 | int ret = symfile_map_offsets_to_segments (objf->obfd, |
62982abd SM |
4319 | data.get (), offs, |
4320 | num_segments, segments); | |
31d99776 DJ |
4321 | |
4322 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4323 | error (_("Can not handle qOffsets TextSeg " |
4324 | "response with this symbol file")); | |
31d99776 DJ |
4325 | |
4326 | if (ret > 0) | |
4327 | do_sections = 0; | |
4328 | } | |
c906108c | 4329 | |
31d99776 DJ |
4330 | if (do_sections) |
4331 | { | |
a42d7dd8 | 4332 | offs[SECT_OFF_TEXT (objf)] = text_addr; |
31d99776 | 4333 | |
3e43a32a MS |
4334 | /* This is a temporary kludge to force data and bss to use the |
4335 | same offsets because that's what nlmconv does now. The real | |
4336 | solution requires changes to the stub and remote.c that I | |
4337 | don't have time to do right now. */ | |
31d99776 | 4338 | |
a42d7dd8 TT |
4339 | offs[SECT_OFF_DATA (objf)] = data_addr; |
4340 | offs[SECT_OFF_BSS (objf)] = data_addr; | |
31d99776 | 4341 | } |
c906108c | 4342 | |
a42d7dd8 | 4343 | objfile_relocate (objf, offs); |
c906108c SS |
4344 | } |
4345 | ||
9a7071a8 | 4346 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4347 | |
4348 | void | |
4349 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4350 | { |
5d93a237 TT |
4351 | struct remote_state *rs = get_remote_state (); |
4352 | ||
9a7071a8 | 4353 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4354 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4355 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4356 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4357 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4358 | { | |
5d93a237 | 4359 | serial_send_break (rs->remote_desc); |
c33e31fd | 4360 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4361 | } |
4362 | else | |
4363 | internal_error (__FILE__, __LINE__, | |
4364 | _("Invalid value for interrupt_sequence_mode: %s."), | |
4365 | interrupt_sequence_mode); | |
4366 | } | |
4367 | ||
3405876a PA |
4368 | |
4369 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4370 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4371 | ||
4372 | static ptid_t | |
e3b2741b | 4373 | stop_reply_extract_thread (const char *stop_reply) |
3405876a PA |
4374 | { |
4375 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4376 | { | |
256642e8 | 4377 | const char *p; |
3405876a PA |
4378 | |
4379 | /* Txx r:val ; r:val (...) */ | |
4380 | p = &stop_reply[3]; | |
4381 | ||
4382 | /* Look for "register" named "thread". */ | |
4383 | while (*p != '\0') | |
4384 | { | |
256642e8 | 4385 | const char *p1; |
3405876a PA |
4386 | |
4387 | p1 = strchr (p, ':'); | |
4388 | if (p1 == NULL) | |
4389 | return null_ptid; | |
4390 | ||
4391 | if (strncmp (p, "thread", p1 - p) == 0) | |
4392 | return read_ptid (++p1, &p); | |
4393 | ||
4394 | p1 = strchr (p, ';'); | |
4395 | if (p1 == NULL) | |
4396 | return null_ptid; | |
4397 | p1++; | |
4398 | ||
4399 | p = p1; | |
4400 | } | |
4401 | } | |
4402 | ||
4403 | return null_ptid; | |
4404 | } | |
4405 | ||
b7ea362b PA |
4406 | /* Determine the remote side's current thread. If we have a stop |
4407 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4408 | "thread" register we can extract the current thread from. If not, | |
4409 | ask the remote which is the current thread with qC. The former | |
4410 | method avoids a roundtrip. */ | |
4411 | ||
6b8edb51 | 4412 | ptid_t |
e3b2741b | 4413 | remote_target::get_current_thread (const char *wait_status) |
b7ea362b | 4414 | { |
6a49a997 | 4415 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4416 | |
4417 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4418 | the target architecture, which we haven't yet fully determined at | |
4419 | this point. */ | |
4420 | if (wait_status != NULL) | |
4421 | ptid = stop_reply_extract_thread (wait_status); | |
d7e15655 | 4422 | if (ptid == null_ptid) |
b7ea362b PA |
4423 | ptid = remote_current_thread (inferior_ptid); |
4424 | ||
4425 | return ptid; | |
4426 | } | |
4427 | ||
49c62f2e PA |
4428 | /* Query the remote target for which is the current thread/process, |
4429 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4430 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4431 | to return the current thread. |
4432 | ||
4433 | This function is called after handling the '?' or 'vRun' packets, | |
4434 | whose response is a stop reply from which we can also try | |
4435 | extracting the thread. If the target doesn't support the explicit | |
4436 | qC query, we infer the current thread from that stop reply, passed | |
64d38fdd | 4437 | in in WAIT_STATUS, which may be NULL. |
49c62f2e | 4438 | |
64d38fdd JM |
4439 | The function returns pointer to the main thread of the inferior. */ |
4440 | ||
4441 | thread_info * | |
e3b2741b | 4442 | remote_target::add_current_inferior_and_thread (const char *wait_status) |
49c62f2e PA |
4443 | { |
4444 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 4445 | bool fake_pid_p = false; |
49c62f2e | 4446 | |
0ac55310 | 4447 | switch_to_no_thread (); |
49c62f2e | 4448 | |
0ac55310 PA |
4449 | /* Now, if we have thread information, update the current thread's |
4450 | ptid. */ | |
87215ad1 | 4451 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4452 | |
87215ad1 | 4453 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4454 | { |
4455 | if (!remote_multi_process_p (rs)) | |
9ab8741a | 4456 | fake_pid_p = true; |
49c62f2e PA |
4457 | } |
4458 | else | |
4459 | { | |
4460 | /* Without this, some commands which require an active target | |
4461 | (such as kill) won't work. This variable serves (at least) | |
4462 | double duty as both the pid of the target process (if it has | |
4463 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4464 | curr_ptid = magic_null_ptid; |
9ab8741a | 4465 | fake_pid_p = true; |
49c62f2e PA |
4466 | } |
4467 | ||
e99b03dc | 4468 | remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1); |
49c62f2e | 4469 | |
87215ad1 SDJ |
4470 | /* Add the main thread and switch to it. Don't try reading |
4471 | registers yet, since we haven't fetched the target description | |
4472 | yet. */ | |
5b6d1e4f | 4473 | thread_info *tp = add_thread_silent (this, curr_ptid); |
87215ad1 | 4474 | switch_to_thread_no_regs (tp); |
64d38fdd JM |
4475 | |
4476 | return tp; | |
49c62f2e PA |
4477 | } |
4478 | ||
6efcd9a8 PA |
4479 | /* Print info about a thread that was found already stopped on |
4480 | connection. */ | |
4481 | ||
4482 | static void | |
4483 | print_one_stopped_thread (struct thread_info *thread) | |
4484 | { | |
4485 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
4486 | ||
00431a78 | 4487 | switch_to_thread (thread); |
f2ffa92b | 4488 | thread->suspend.stop_pc = get_frame_pc (get_current_frame ()); |
6efcd9a8 PA |
4489 | set_current_sal_from_frame (get_current_frame ()); |
4490 | ||
4491 | thread->suspend.waitstatus_pending_p = 0; | |
4492 | ||
4493 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
4494 | { | |
4495 | enum gdb_signal sig = ws->value.sig; | |
4496 | ||
4497 | if (signal_print_state (sig)) | |
76727919 | 4498 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4499 | } |
76727919 | 4500 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4501 | } |
4502 | ||
221e1a37 PA |
4503 | /* Process all initial stop replies the remote side sent in response |
4504 | to the ? packet. These indicate threads that were already stopped | |
4505 | on initial connection. We mark these threads as stopped and print | |
4506 | their current frame before giving the user the prompt. */ | |
4507 | ||
6b8edb51 PA |
4508 | void |
4509 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4510 | { |
4511 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4512 | struct thread_info *selected = NULL; |
4513 | struct thread_info *lowest_stopped = NULL; | |
4514 | struct thread_info *first = NULL; | |
221e1a37 PA |
4515 | |
4516 | /* Consume the initial pending events. */ | |
4517 | while (pending_stop_replies-- > 0) | |
4518 | { | |
4519 | ptid_t waiton_ptid = minus_one_ptid; | |
4520 | ptid_t event_ptid; | |
4521 | struct target_waitstatus ws; | |
4522 | int ignore_event = 0; | |
4523 | ||
4524 | memset (&ws, 0, sizeof (ws)); | |
4525 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
4526 | if (remote_debug) | |
4527 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
4528 | ||
4529 | switch (ws.kind) | |
4530 | { | |
4531 | case TARGET_WAITKIND_IGNORE: | |
4532 | case TARGET_WAITKIND_NO_RESUMED: | |
4533 | case TARGET_WAITKIND_SIGNALLED: | |
4534 | case TARGET_WAITKIND_EXITED: | |
4535 | /* We shouldn't see these, but if we do, just ignore. */ | |
2189c312 | 4536 | remote_debug_printf ("event ignored"); |
221e1a37 PA |
4537 | ignore_event = 1; |
4538 | break; | |
4539 | ||
4540 | case TARGET_WAITKIND_EXECD: | |
4541 | xfree (ws.value.execd_pathname); | |
4542 | break; | |
4543 | default: | |
4544 | break; | |
4545 | } | |
4546 | ||
4547 | if (ignore_event) | |
4548 | continue; | |
4549 | ||
5b6d1e4f | 4550 | thread_info *evthread = find_thread_ptid (this, event_ptid); |
221e1a37 PA |
4551 | |
4552 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
4553 | { | |
4554 | enum gdb_signal sig = ws.value.sig; | |
4555 | ||
4556 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4557 | instead of signal 0. Suppress it. */ | |
4558 | if (sig == GDB_SIGNAL_TRAP) | |
4559 | sig = GDB_SIGNAL_0; | |
b926417a | 4560 | evthread->suspend.stop_signal = sig; |
6efcd9a8 PA |
4561 | ws.value.sig = sig; |
4562 | } | |
221e1a37 | 4563 | |
b926417a | 4564 | evthread->suspend.waitstatus = ws; |
6efcd9a8 PA |
4565 | |
4566 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
4567 | || ws.value.sig != GDB_SIGNAL_0) | |
b926417a | 4568 | evthread->suspend.waitstatus_pending_p = 1; |
6efcd9a8 | 4569 | |
719546c4 SM |
4570 | set_executing (this, event_ptid, false); |
4571 | set_running (this, event_ptid, false); | |
c9d22089 | 4572 | get_remote_thread_info (evthread)->set_not_resumed (); |
6efcd9a8 PA |
4573 | } |
4574 | ||
4575 | /* "Notice" the new inferiors before anything related to | |
4576 | registers/memory. */ | |
5b6d1e4f | 4577 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4578 | { |
6efcd9a8 PA |
4579 | inf->needs_setup = 1; |
4580 | ||
4581 | if (non_stop) | |
4582 | { | |
08036331 | 4583 | thread_info *thread = any_live_thread_of_inferior (inf); |
00431a78 | 4584 | notice_new_inferior (thread, thread->state == THREAD_RUNNING, |
6efcd9a8 PA |
4585 | from_tty); |
4586 | } | |
4587 | } | |
4588 | ||
4589 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4590 | records the threads' stop pc, so must be done after "noticing" | |
4591 | the inferiors. */ | |
4592 | if (!non_stop) | |
4593 | { | |
4594 | stop_all_threads (); | |
4595 | ||
4596 | /* If all threads of an inferior were already stopped, we | |
4597 | haven't setup the inferior yet. */ | |
5b6d1e4f | 4598 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4599 | { |
6efcd9a8 PA |
4600 | if (inf->needs_setup) |
4601 | { | |
08036331 | 4602 | thread_info *thread = any_live_thread_of_inferior (inf); |
6efcd9a8 PA |
4603 | switch_to_thread_no_regs (thread); |
4604 | setup_inferior (0); | |
4605 | } | |
4606 | } | |
221e1a37 | 4607 | } |
6efcd9a8 PA |
4608 | |
4609 | /* Now go over all threads that are stopped, and print their current | |
4610 | frame. If all-stop, then if there's a signalled thread, pick | |
4611 | that as current. */ | |
5b6d1e4f | 4612 | for (thread_info *thread : all_non_exited_threads (this)) |
6efcd9a8 | 4613 | { |
6efcd9a8 PA |
4614 | if (first == NULL) |
4615 | first = thread; | |
4616 | ||
4617 | if (!non_stop) | |
00431a78 | 4618 | thread->set_running (false); |
6efcd9a8 PA |
4619 | else if (thread->state != THREAD_STOPPED) |
4620 | continue; | |
4621 | ||
6efcd9a8 PA |
4622 | if (selected == NULL |
4623 | && thread->suspend.waitstatus_pending_p) | |
4624 | selected = thread; | |
4625 | ||
5d5658a1 PA |
4626 | if (lowest_stopped == NULL |
4627 | || thread->inf->num < lowest_stopped->inf->num | |
4628 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4629 | lowest_stopped = thread; |
4630 | ||
4631 | if (non_stop) | |
4632 | print_one_stopped_thread (thread); | |
4633 | } | |
4634 | ||
4635 | /* In all-stop, we only print the status of one thread, and leave | |
4636 | others with their status pending. */ | |
4637 | if (!non_stop) | |
4638 | { | |
08036331 | 4639 | thread_info *thread = selected; |
6efcd9a8 PA |
4640 | if (thread == NULL) |
4641 | thread = lowest_stopped; | |
4642 | if (thread == NULL) | |
4643 | thread = first; | |
4644 | ||
4645 | print_one_stopped_thread (thread); | |
4646 | } | |
4647 | ||
4648 | /* For "info program". */ | |
08036331 | 4649 | thread_info *thread = inferior_thread (); |
6efcd9a8 | 4650 | if (thread->state == THREAD_STOPPED) |
5b6d1e4f | 4651 | set_last_target_status (this, inferior_ptid, thread->suspend.waitstatus); |
221e1a37 PA |
4652 | } |
4653 | ||
048094ac PA |
4654 | /* Start the remote connection and sync state. */ |
4655 | ||
f6ac5f3d PA |
4656 | void |
4657 | remote_target::start_remote (int from_tty, int extended_p) | |
c906108c | 4658 | { |
2189c312 SM |
4659 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
4660 | ||
c8d104ad PA |
4661 | struct remote_state *rs = get_remote_state (); |
4662 | struct packet_config *noack_config; | |
8621d6a9 | 4663 | |
048094ac PA |
4664 | /* Signal other parts that we're going through the initial setup, |
4665 | and so things may not be stable yet. E.g., we don't try to | |
4666 | install tracepoints until we've relocated symbols. Also, a | |
4667 | Ctrl-C before we're connected and synced up can't interrupt the | |
4668 | target. Instead, it offers to drop the (potentially wedged) | |
4669 | connection. */ | |
4d60b897 | 4670 | rs->starting_up = true; |
048094ac | 4671 | |
522002f9 | 4672 | QUIT; |
c906108c | 4673 | |
9a7071a8 JB |
4674 | if (interrupt_on_connect) |
4675 | send_interrupt_sequence (); | |
4676 | ||
57e12211 | 4677 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4678 | remote_serial_write ("+", 1); |
1e51243a | 4679 | |
c8d104ad PA |
4680 | /* The first packet we send to the target is the optional "supported |
4681 | packets" request. If the target can answer this, it will tell us | |
4682 | which later probes to skip. */ | |
4683 | remote_query_supported (); | |
4684 | ||
d914c394 | 4685 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4686 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4687 | set_permissions (); |
d914c394 | 4688 | |
57809e5e JK |
4689 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4690 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4691 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4692 | invalid reply and GDB would return error in | |
4693 | remote_hostio_set_filesystem, making remote files access impossible. | |
4694 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4695 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4696 | { | |
4697 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4698 | ||
4699 | putpkt (v_mustreplyempty); | |
8d64371b TT |
4700 | getpkt (&rs->buf, 0); |
4701 | if (strcmp (rs->buf.data (), "OK") == 0) | |
57809e5e | 4702 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; |
8d64371b | 4703 | else if (strcmp (rs->buf.data (), "") != 0) |
57809e5e | 4704 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, |
8d64371b | 4705 | rs->buf.data ()); |
57809e5e JK |
4706 | } |
4707 | ||
c8d104ad PA |
4708 | /* Next, we possibly activate noack mode. |
4709 | ||
4710 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4711 | enable noack mode if the stub reported a wish for it with | |
4712 | qSupported. | |
4713 | ||
4714 | If set to TRUE, then enable noack mode even if the stub didn't | |
4715 | report it in qSupported. If the stub doesn't reply OK, the | |
4716 | session ends with an error. | |
4717 | ||
4718 | If FALSE, then don't activate noack mode, regardless of what the | |
4719 | stub claimed should be the default with qSupported. */ | |
4720 | ||
4721 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4722 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4723 | { |
4724 | putpkt ("QStartNoAckMode"); | |
8d64371b | 4725 | getpkt (&rs->buf, 0); |
c8d104ad PA |
4726 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) |
4727 | rs->noack_mode = 1; | |
4728 | } | |
4729 | ||
04bd08de | 4730 | if (extended_p) |
5fe04517 PA |
4731 | { |
4732 | /* Tell the remote that we are using the extended protocol. */ | |
4733 | putpkt ("!"); | |
8d64371b | 4734 | getpkt (&rs->buf, 0); |
5fe04517 PA |
4735 | } |
4736 | ||
9b224c5e PA |
4737 | /* Let the target know which signals it is allowed to pass down to |
4738 | the program. */ | |
4739 | update_signals_program_target (); | |
4740 | ||
d962ef82 DJ |
4741 | /* Next, if the target can specify a description, read it. We do |
4742 | this before anything involving memory or registers. */ | |
4743 | target_find_description (); | |
4744 | ||
6c95b8df PA |
4745 | /* Next, now that we know something about the target, update the |
4746 | address spaces in the program spaces. */ | |
4747 | update_address_spaces (); | |
4748 | ||
50c71eaf PA |
4749 | /* On OSs where the list of libraries is global to all |
4750 | processes, we fetch them early. */ | |
f5656ead | 4751 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4752 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4753 | |
6efcd9a8 | 4754 | if (target_is_non_stop_p ()) |
74531fed | 4755 | { |
4082afcc | 4756 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4757 | error (_("Non-stop mode requested, but remote " |
4758 | "does not support non-stop")); | |
74531fed PA |
4759 | |
4760 | putpkt ("QNonStop:1"); | |
8d64371b | 4761 | getpkt (&rs->buf, 0); |
74531fed | 4762 | |
8d64371b TT |
4763 | if (strcmp (rs->buf.data (), "OK") != 0) |
4764 | error (_("Remote refused setting non-stop mode with: %s"), | |
4765 | rs->buf.data ()); | |
74531fed PA |
4766 | |
4767 | /* Find about threads and processes the stub is already | |
4768 | controlling. We default to adding them in the running state. | |
4769 | The '?' query below will then tell us about which threads are | |
4770 | stopped. */ | |
f6ac5f3d | 4771 | this->update_thread_list (); |
74531fed | 4772 | } |
4082afcc | 4773 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4774 | { |
4775 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4776 | Request it explicitly. */ |
74531fed | 4777 | putpkt ("QNonStop:0"); |
8d64371b | 4778 | getpkt (&rs->buf, 0); |
74531fed | 4779 | |
8d64371b TT |
4780 | if (strcmp (rs->buf.data (), "OK") != 0) |
4781 | error (_("Remote refused setting all-stop mode with: %s"), | |
4782 | rs->buf.data ()); | |
74531fed PA |
4783 | } |
4784 | ||
a0743c90 YQ |
4785 | /* Upload TSVs regardless of whether the target is running or not. The |
4786 | remote stub, such as GDBserver, may have some predefined or builtin | |
4787 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4788 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4789 | { |
4790 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4791 | ||
f6ac5f3d | 4792 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4793 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4794 | } | |
4795 | ||
2d717e4f DJ |
4796 | /* Check whether the target is running now. */ |
4797 | putpkt ("?"); | |
8d64371b | 4798 | getpkt (&rs->buf, 0); |
2d717e4f | 4799 | |
6efcd9a8 | 4800 | if (!target_is_non_stop_p ()) |
2d717e4f | 4801 | { |
b5c8f22d SM |
4802 | char *wait_status = NULL; |
4803 | ||
74531fed | 4804 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4805 | { |
04bd08de | 4806 | if (!extended_p) |
74531fed | 4807 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4808 | |
4809 | /* We're connected, but not running. Drop out before we | |
4810 | call start_remote. */ | |
4d60b897 | 4811 | rs->starting_up = false; |
c35b1492 | 4812 | return; |
2d717e4f DJ |
4813 | } |
4814 | else | |
74531fed | 4815 | { |
74531fed | 4816 | /* Save the reply for later. */ |
8d64371b TT |
4817 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
4818 | strcpy (wait_status, rs->buf.data ()); | |
74531fed PA |
4819 | } |
4820 | ||
b7ea362b | 4821 | /* Fetch thread list. */ |
e8032dde | 4822 | target_update_thread_list (); |
b7ea362b | 4823 | |
74531fed PA |
4824 | /* Let the stub know that we want it to return the thread. */ |
4825 | set_continue_thread (minus_one_ptid); | |
4826 | ||
5b6d1e4f | 4827 | if (thread_count (this) == 0) |
b7ea362b PA |
4828 | { |
4829 | /* Target has no concept of threads at all. GDB treats | |
4830 | non-threaded target as single-threaded; add a main | |
4831 | thread. */ | |
64d38fdd JM |
4832 | thread_info *tp = add_current_inferior_and_thread (wait_status); |
4833 | get_remote_thread_info (tp)->set_resumed (); | |
b7ea362b PA |
4834 | } |
4835 | else | |
4836 | { | |
4837 | /* We have thread information; select the thread the target | |
4838 | says should be current. If we're reconnecting to a | |
4839 | multi-threaded program, this will ideally be the thread | |
4840 | that last reported an event before GDB disconnected. */ | |
75c6c844 PA |
4841 | ptid_t curr_thread = get_current_thread (wait_status); |
4842 | if (curr_thread == null_ptid) | |
b7ea362b PA |
4843 | { |
4844 | /* Odd... The target was able to list threads, but not | |
4845 | tell us which thread was current (no "thread" | |
4846 | register in T stop reply?). Just pick the first | |
4847 | thread in the thread list then. */ | |
2189c312 SM |
4848 | |
4849 | remote_debug_printf ("warning: couldn't determine remote " | |
4850 | "current thread; picking first in list."); | |
c9f35b34 | 4851 | |
5b6d1e4f PA |
4852 | for (thread_info *tp : all_non_exited_threads (this, |
4853 | minus_one_ptid)) | |
75c6c844 PA |
4854 | { |
4855 | switch_to_thread (tp); | |
4856 | break; | |
4857 | } | |
b7ea362b | 4858 | } |
75c6c844 | 4859 | else |
5b6d1e4f | 4860 | switch_to_thread (find_thread_ptid (this, curr_thread)); |
b7ea362b | 4861 | } |
74531fed | 4862 | |
6e586cc5 YQ |
4863 | /* init_wait_for_inferior should be called before get_offsets in order |
4864 | to manage `inserted' flag in bp loc in a correct state. | |
4865 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4866 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4867 | start_remote, set `inserted' flag to 1. In the initialization of | |
4868 | inferior, breakpoint_init_inferior should be called first, and then | |
4869 | breakpoint_re_set can be called. If this order is broken, state of | |
4870 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4871 | manipulation. */ | |
4872 | init_wait_for_inferior (); | |
4873 | ||
74531fed PA |
4874 | get_offsets (); /* Get text, data & bss offsets. */ |
4875 | ||
d962ef82 DJ |
4876 | /* If we could not find a description using qXfer, and we know |
4877 | how to do it some other way, try again. This is not | |
4878 | supported for non-stop; it could be, but it is tricky if | |
4879 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4880 | if (remote_read_description_p (this) |
f5656ead | 4881 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4882 | { |
4883 | target_clear_description (); | |
4884 | target_find_description (); | |
4885 | } | |
4886 | ||
74531fed PA |
4887 | /* Use the previously fetched status. */ |
4888 | gdb_assert (wait_status != NULL); | |
8d64371b | 4889 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
4890 | rs->cached_wait_status = 1; |
4891 | ||
f6ac5f3d | 4892 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4893 | } |
4894 | else | |
4895 | { | |
68c97600 PA |
4896 | /* Clear WFI global state. Do this before finding about new |
4897 | threads and inferiors, and setting the current inferior. | |
4898 | Otherwise we would clear the proceed status of the current | |
4899 | inferior when we want its stop_soon state to be preserved | |
4900 | (see notice_new_inferior). */ | |
4901 | init_wait_for_inferior (); | |
4902 | ||
74531fed PA |
4903 | /* In non-stop, we will either get an "OK", meaning that there |
4904 | are no stopped threads at this time; or, a regular stop | |
4905 | reply. In the latter case, there may be more than one thread | |
4906 | stopped --- we pull them all out using the vStopped | |
4907 | mechanism. */ | |
8d64371b | 4908 | if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 4909 | { |
722247f1 | 4910 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4911 | |
722247f1 YQ |
4912 | /* remote_notif_get_pending_replies acks this one, and gets |
4913 | the rest out. */ | |
f48ff2a7 | 4914 | rs->notif_state->pending_event[notif_client_stop.id] |
8d64371b | 4915 | = remote_notif_parse (this, notif, rs->buf.data ()); |
722247f1 | 4916 | remote_notif_get_pending_events (notif); |
74531fed | 4917 | } |
2d717e4f | 4918 | |
5b6d1e4f | 4919 | if (thread_count (this) == 0) |
74531fed | 4920 | { |
04bd08de | 4921 | if (!extended_p) |
74531fed | 4922 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4923 | |
c35b1492 PA |
4924 | /* We're connected, but not running. Drop out before we |
4925 | call start_remote. */ | |
4d60b897 | 4926 | rs->starting_up = false; |
c35b1492 PA |
4927 | return; |
4928 | } | |
74531fed | 4929 | |
2455069d | 4930 | /* Report all signals during attach/startup. */ |
adc6a863 | 4931 | pass_signals ({}); |
221e1a37 PA |
4932 | |
4933 | /* If there are already stopped threads, mark them stopped and | |
4934 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4935 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4936 | |
4937 | if (target_can_async_p ()) | |
4938 | target_async (1); | |
74531fed | 4939 | } |
c8d104ad | 4940 | |
c8d104ad | 4941 | /* If we connected to a live target, do some additional setup. */ |
55f6301a | 4942 | if (target_has_execution ()) |
c8d104ad | 4943 | { |
a42d7dd8 TT |
4944 | /* No use without a symbol-file. */ |
4945 | if (current_program_space->symfile_object_file) | |
36d25514 | 4946 | remote_check_symbols (); |
c8d104ad | 4947 | } |
50c71eaf | 4948 | |
d5551862 SS |
4949 | /* Possibly the target has been engaged in a trace run started |
4950 | previously; find out where things are at. */ | |
f6ac5f3d | 4951 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 4952 | { |
00bf0b85 | 4953 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4954 | |
00bf0b85 SS |
4955 | if (current_trace_status ()->running) |
4956 | printf_filtered (_("Trace is already running on the target.\n")); | |
4957 | ||
f6ac5f3d | 4958 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
4959 | |
4960 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4961 | } |
4962 | ||
c0272db5 TW |
4963 | /* Possibly the target has been engaged in a btrace record started |
4964 | previously; find out where things are at. */ | |
4965 | remote_btrace_maybe_reopen (); | |
4966 | ||
1e51243a PA |
4967 | /* The thread and inferior lists are now synchronized with the |
4968 | target, our symbols have been relocated, and we're merged the | |
4969 | target's tracepoints with ours. We're done with basic start | |
4970 | up. */ | |
4d60b897 | 4971 | rs->starting_up = false; |
1e51243a | 4972 | |
a25a5a45 PA |
4973 | /* Maybe breakpoints are global and need to be inserted now. */ |
4974 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4975 | insert_breakpoints (); |
c906108c SS |
4976 | } |
4977 | ||
121b3efd PA |
4978 | const char * |
4979 | remote_target::connection_string () | |
4980 | { | |
4981 | remote_state *rs = get_remote_state (); | |
4982 | ||
4983 | if (rs->remote_desc->name != NULL) | |
4984 | return rs->remote_desc->name; | |
4985 | else | |
4986 | return NULL; | |
4987 | } | |
4988 | ||
c906108c SS |
4989 | /* Open a connection to a remote debugger. |
4990 | NAME is the filename used for communication. */ | |
4991 | ||
f6ac5f3d PA |
4992 | void |
4993 | remote_target::open (const char *name, int from_tty) | |
c906108c | 4994 | { |
f6ac5f3d | 4995 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
4996 | } |
4997 | ||
c906108c SS |
4998 | /* Open a connection to a remote debugger using the extended |
4999 | remote gdb protocol. NAME is the filename used for communication. */ | |
5000 | ||
f6ac5f3d PA |
5001 | void |
5002 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 5003 | { |
f6ac5f3d | 5004 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
5005 | } |
5006 | ||
ca4f7f8b PA |
5007 | /* Reset all packets back to "unknown support". Called when opening a |
5008 | new connection to a remote target. */ | |
c906108c | 5009 | |
d471ea57 | 5010 | static void |
ca4f7f8b | 5011 | reset_all_packet_configs_support (void) |
d471ea57 AC |
5012 | { |
5013 | int i; | |
a744cf53 | 5014 | |
444abaca | 5015 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 5016 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
5017 | } |
5018 | ||
ca4f7f8b PA |
5019 | /* Initialize all packet configs. */ |
5020 | ||
5021 | static void | |
5022 | init_all_packet_configs (void) | |
5023 | { | |
5024 | int i; | |
5025 | ||
5026 | for (i = 0; i < PACKET_MAX; i++) | |
5027 | { | |
5028 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
5029 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
5030 | } | |
5031 | } | |
5032 | ||
23860348 | 5033 | /* Symbol look-up. */ |
dc8acb97 | 5034 | |
6b8edb51 PA |
5035 | void |
5036 | remote_target::remote_check_symbols () | |
dc8acb97 | 5037 | { |
8d64371b | 5038 | char *tmp; |
dc8acb97 MS |
5039 | int end; |
5040 | ||
63154eca PA |
5041 | /* The remote side has no concept of inferiors that aren't running |
5042 | yet, it only knows about running processes. If we're connected | |
5043 | but our current inferior is not running, we should not invite the | |
5044 | remote target to request symbol lookups related to its | |
5045 | (unrelated) current process. */ | |
55f6301a | 5046 | if (!target_has_execution ()) |
63154eca PA |
5047 | return; |
5048 | ||
4082afcc | 5049 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
5050 | return; |
5051 | ||
63154eca PA |
5052 | /* Make sure the remote is pointing at the right process. Note |
5053 | there's no way to select "no process". */ | |
3c9c4b83 PA |
5054 | set_general_process (); |
5055 | ||
6d820c5c DJ |
5056 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
5057 | because we need both at the same time. */ | |
66644cd3 | 5058 | gdb::char_vector msg (get_remote_packet_size ()); |
8d64371b | 5059 | gdb::char_vector reply (get_remote_packet_size ()); |
6d820c5c | 5060 | |
23860348 | 5061 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
5062 | |
5063 | putpkt ("qSymbol::"); | |
8d64371b | 5064 | getpkt (&reply, 0); |
28170b88 | 5065 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); |
dc8acb97 | 5066 | |
8d64371b | 5067 | while (startswith (reply.data (), "qSymbol:")) |
dc8acb97 | 5068 | { |
77e371c0 TT |
5069 | struct bound_minimal_symbol sym; |
5070 | ||
dc8acb97 | 5071 | tmp = &reply[8]; |
66644cd3 AB |
5072 | end = hex2bin (tmp, reinterpret_cast <gdb_byte *> (msg.data ()), |
5073 | strlen (tmp) / 2); | |
dc8acb97 | 5074 | msg[end] = '\0'; |
66644cd3 | 5075 | sym = lookup_minimal_symbol (msg.data (), NULL, NULL); |
3b7344d5 | 5076 | if (sym.minsym == NULL) |
66644cd3 AB |
5077 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol::%s", |
5078 | &reply[8]); | |
dc8acb97 | 5079 | else |
2bbe3cc1 | 5080 | { |
f5656ead | 5081 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 5082 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
5083 | |
5084 | /* If this is a function address, return the start of code | |
5085 | instead of any data function descriptor. */ | |
328d42d8 SM |
5086 | sym_addr = gdbarch_convert_from_func_ptr_addr |
5087 | (target_gdbarch (), sym_addr, current_inferior ()->top_target ()); | |
2bbe3cc1 | 5088 | |
66644cd3 | 5089 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol:%s:%s", |
5af949e3 | 5090 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 | 5091 | } |
66644cd3 AB |
5092 | |
5093 | putpkt (msg.data ()); | |
8d64371b | 5094 | getpkt (&reply, 0); |
dc8acb97 MS |
5095 | } |
5096 | } | |
5097 | ||
9db8d71f | 5098 | static struct serial * |
baa336ce | 5099 | remote_serial_open (const char *name) |
9db8d71f DJ |
5100 | { |
5101 | static int udp_warning = 0; | |
5102 | ||
5103 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
5104 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
5105 | serial connection is reliable and not the serial connection promising | |
5106 | to be. */ | |
61012eef | 5107 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 5108 | { |
3e43a32a MS |
5109 | warning (_("The remote protocol may be unreliable over UDP.\n" |
5110 | "Some events may be lost, rendering further debugging " | |
5111 | "impossible.")); | |
9db8d71f DJ |
5112 | udp_warning = 1; |
5113 | } | |
5114 | ||
5115 | return serial_open (name); | |
5116 | } | |
5117 | ||
d914c394 SS |
5118 | /* Inform the target of our permission settings. The permission flags |
5119 | work without this, but if the target knows the settings, it can do | |
5120 | a couple things. First, it can add its own check, to catch cases | |
5121 | that somehow manage to get by the permissions checks in target | |
5122 | methods. Second, if the target is wired to disallow particular | |
5123 | settings (for instance, a system in the field that is not set up to | |
5124 | be able to stop at a breakpoint), it can object to any unavailable | |
5125 | permissions. */ | |
5126 | ||
5127 | void | |
f6ac5f3d | 5128 | remote_target::set_permissions () |
d914c394 SS |
5129 | { |
5130 | struct remote_state *rs = get_remote_state (); | |
5131 | ||
8d64371b | 5132 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAllow:" |
bba74b36 YQ |
5133 | "WriteReg:%x;WriteMem:%x;" |
5134 | "InsertBreak:%x;InsertTrace:%x;" | |
5135 | "InsertFastTrace:%x;Stop:%x", | |
5136 | may_write_registers, may_write_memory, | |
5137 | may_insert_breakpoints, may_insert_tracepoints, | |
5138 | may_insert_fast_tracepoints, may_stop); | |
d914c394 | 5139 | putpkt (rs->buf); |
8d64371b | 5140 | getpkt (&rs->buf, 0); |
d914c394 SS |
5141 | |
5142 | /* If the target didn't like the packet, warn the user. Do not try | |
5143 | to undo the user's settings, that would just be maddening. */ | |
8d64371b TT |
5144 | if (strcmp (rs->buf.data (), "OK") != 0) |
5145 | warning (_("Remote refused setting permissions with: %s"), | |
5146 | rs->buf.data ()); | |
d914c394 SS |
5147 | } |
5148 | ||
be2a5f71 DJ |
5149 | /* This type describes each known response to the qSupported |
5150 | packet. */ | |
5151 | struct protocol_feature | |
5152 | { | |
5153 | /* The name of this protocol feature. */ | |
5154 | const char *name; | |
5155 | ||
5156 | /* The default for this protocol feature. */ | |
5157 | enum packet_support default_support; | |
5158 | ||
5159 | /* The function to call when this feature is reported, or after | |
5160 | qSupported processing if the feature is not supported. | |
5161 | The first argument points to this structure. The second | |
5162 | argument indicates whether the packet requested support be | |
5163 | enabled, disabled, or probed (or the default, if this function | |
5164 | is being called at the end of processing and this feature was | |
5165 | not reported). The third argument may be NULL; if not NULL, it | |
5166 | is a NUL-terminated string taken from the packet following | |
5167 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5168 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5169 | enum packet_support, const char *); | |
be2a5f71 DJ |
5170 | |
5171 | /* The corresponding packet for this feature. Only used if | |
5172 | FUNC is remote_supported_packet. */ | |
5173 | int packet; | |
5174 | }; | |
5175 | ||
be2a5f71 | 5176 | static void |
6b8edb51 PA |
5177 | remote_supported_packet (remote_target *remote, |
5178 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5179 | enum packet_support support, |
5180 | const char *argument) | |
5181 | { | |
5182 | if (argument) | |
5183 | { | |
5184 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5185 | " \"%s\"."), feature->name); | |
5186 | return; | |
5187 | } | |
5188 | ||
4082afcc | 5189 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5190 | } |
be2a5f71 | 5191 | |
6b8edb51 PA |
5192 | void |
5193 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5194 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5195 | { |
5196 | struct remote_state *rs = get_remote_state (); | |
5197 | ||
5198 | int packet_size; | |
5199 | char *value_end; | |
5200 | ||
5201 | if (support != PACKET_ENABLE) | |
5202 | return; | |
5203 | ||
5204 | if (value == NULL || *value == '\0') | |
5205 | { | |
5206 | warning (_("Remote target reported \"%s\" without a size."), | |
5207 | feature->name); | |
5208 | return; | |
5209 | } | |
5210 | ||
5211 | errno = 0; | |
5212 | packet_size = strtol (value, &value_end, 16); | |
5213 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5214 | { | |
5215 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5216 | feature->name, value); | |
5217 | return; | |
5218 | } | |
5219 | ||
be2a5f71 DJ |
5220 | /* Record the new maximum packet size. */ |
5221 | rs->explicit_packet_size = packet_size; | |
5222 | } | |
5223 | ||
cb8c24b6 | 5224 | static void |
6b8edb51 PA |
5225 | remote_packet_size (remote_target *remote, const protocol_feature *feature, |
5226 | enum packet_support support, const char *value) | |
5227 | { | |
5228 | remote->remote_packet_size (feature, support, value); | |
5229 | } | |
5230 | ||
dc473cfb | 5231 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5232 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5233 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5234 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5235 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5236 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5237 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5238 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5239 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5240 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5241 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5242 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5243 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5244 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5245 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5246 | PACKET_qXfer_memory_map }, |
07e059b5 VP |
5247 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5248 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5249 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5250 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5251 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5252 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5253 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5254 | PACKET_QPassSignals }, | |
82075af2 JS |
5255 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5256 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5257 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5258 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5259 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5260 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5261 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5262 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5263 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5264 | PACKET_QEnvironmentHexEncoded }, | |
5265 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5266 | PACKET_QEnvironmentReset }, | |
5267 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5268 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5269 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5270 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5271 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5272 | PACKET_multiprocess_feature }, | |
5273 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5274 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5275 | PACKET_qXfer_siginfo_read }, | |
5276 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5277 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5278 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5279 | PACKET_ConditionalTracepoints }, |
4082afcc | 5280 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5281 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5282 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5283 | PACKET_BreakpointCommands }, |
4082afcc | 5284 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5285 | PACKET_FastTracepoints }, |
4082afcc | 5286 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5287 | PACKET_StaticTracepoints }, |
4082afcc | 5288 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5289 | PACKET_InstallInTrace}, |
4082afcc PA |
5290 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5291 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5292 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5293 | PACKET_bc }, | |
5294 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5295 | PACKET_bs }, | |
409873ef SS |
5296 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5297 | PACKET_TracepointSource }, | |
d914c394 SS |
5298 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5299 | PACKET_QAllow }, | |
4082afcc PA |
5300 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5301 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5302 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5303 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5304 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5305 | PACKET_qXfer_uib }, | |
03583c20 UW |
5306 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5307 | PACKET_QDisableRandomization }, | |
d1feda86 | 5308 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5309 | { "QTBuffer:size", PACKET_DISABLE, |
5310 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5311 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5312 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5313 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5314 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5315 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5316 | PACKET_qXfer_btrace }, |
5317 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5318 | PACKET_qXfer_btrace_conf }, |
5319 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5320 | PACKET_Qbtrace_conf_bts_size }, |
5321 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5322 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5323 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5324 | PACKET_fork_event_feature }, | |
5325 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5326 | PACKET_vfork_event_feature }, | |
94585166 DB |
5327 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5328 | PACKET_exec_event_feature }, | |
b20a6524 | 5329 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5330 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5331 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5332 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5333 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
2c2e7f87 LM |
5334 | { "memory-tagging", PACKET_DISABLE, remote_supported_packet, |
5335 | PACKET_memory_tagging_feature }, | |
be2a5f71 DJ |
5336 | }; |
5337 | ||
c8d5aac9 L |
5338 | static char *remote_support_xml; |
5339 | ||
5340 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5341 | ||
5342 | void | |
6e39997a | 5343 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5344 | { |
5345 | #if defined(HAVE_LIBEXPAT) | |
5346 | if (remote_support_xml == NULL) | |
c4f7c687 | 5347 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5348 | else |
5349 | { | |
5350 | char *copy = xstrdup (remote_support_xml + 13); | |
ca3a04f6 CB |
5351 | char *saveptr; |
5352 | char *p = strtok_r (copy, ",", &saveptr); | |
c8d5aac9 L |
5353 | |
5354 | do | |
5355 | { | |
5356 | if (strcmp (p, xml) == 0) | |
5357 | { | |
5358 | /* already there */ | |
5359 | xfree (copy); | |
5360 | return; | |
5361 | } | |
5362 | } | |
ca3a04f6 | 5363 | while ((p = strtok_r (NULL, ",", &saveptr)) != NULL); |
c8d5aac9 L |
5364 | xfree (copy); |
5365 | ||
94b0dee1 PA |
5366 | remote_support_xml = reconcat (remote_support_xml, |
5367 | remote_support_xml, ",", xml, | |
5368 | (char *) NULL); | |
c8d5aac9 L |
5369 | } |
5370 | #endif | |
5371 | } | |
5372 | ||
69b6ecb0 TT |
5373 | static void |
5374 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5375 | { |
69b6ecb0 TT |
5376 | if (!msg->empty ()) |
5377 | msg->append (";"); | |
5378 | msg->append (append); | |
c8d5aac9 L |
5379 | } |
5380 | ||
6b8edb51 PA |
5381 | void |
5382 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5383 | { |
5384 | struct remote_state *rs = get_remote_state (); | |
5385 | char *next; | |
5386 | int i; | |
5387 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5388 | ||
5389 | /* The packet support flags are handled differently for this packet | |
5390 | than for most others. We treat an error, a disabled packet, and | |
5391 | an empty response identically: any features which must be reported | |
5392 | to be used will be automatically disabled. An empty buffer | |
5393 | accomplishes this, since that is also the representation for a list | |
5394 | containing no features. */ | |
5395 | ||
5396 | rs->buf[0] = 0; | |
4082afcc | 5397 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5398 | { |
69b6ecb0 | 5399 | std::string q; |
c8d5aac9 | 5400 | |
73b8c1fd | 5401 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5402 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5403 | |
f7e6eed5 | 5404 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5405 | remote_query_supported_append (&q, "swbreak+"); |
f7e6eed5 | 5406 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5407 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5408 | |
69b6ecb0 | 5409 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5410 | |
8020350c DB |
5411 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
5412 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5413 | remote_query_supported_append (&q, "fork-events+"); |
8020350c DB |
5414 | if (packet_set_cmd_state (PACKET_vfork_event_feature) |
5415 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5416 | remote_query_supported_append (&q, "vfork-events+"); |
8020350c DB |
5417 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
5418 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5419 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5420 | |
750ce8d1 | 5421 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5422 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5423 | |
65706a29 | 5424 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5425 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5426 | |
f2faf941 | 5427 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5428 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5429 | |
2c2e7f87 LM |
5430 | if (packet_set_cmd_state (PACKET_memory_tagging_feature) |
5431 | != AUTO_BOOLEAN_FALSE) | |
5432 | remote_query_supported_append (&q, "memory-tagging+"); | |
5433 | ||
b35d5edb PA |
5434 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5435 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5436 | if (remote_support_xml != NULL |
5437 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
69b6ecb0 | 5438 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5439 | |
69b6ecb0 TT |
5440 | q = "qSupported:" + q; |
5441 | putpkt (q.c_str ()); | |
94b0dee1 | 5442 | |
8d64371b | 5443 | getpkt (&rs->buf, 0); |
be2a5f71 DJ |
5444 | |
5445 | /* If an error occured, warn, but do not return - just reset the | |
5446 | buffer to empty and go on to disable features. */ | |
5447 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5448 | == PACKET_ERROR) | |
5449 | { | |
8d64371b | 5450 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
be2a5f71 DJ |
5451 | rs->buf[0] = 0; |
5452 | } | |
5453 | } | |
5454 | ||
5455 | memset (seen, 0, sizeof (seen)); | |
5456 | ||
8d64371b | 5457 | next = rs->buf.data (); |
be2a5f71 DJ |
5458 | while (*next) |
5459 | { | |
5460 | enum packet_support is_supported; | |
5461 | char *p, *end, *name_end, *value; | |
5462 | ||
5463 | /* First separate out this item from the rest of the packet. If | |
5464 | there's another item after this, we overwrite the separator | |
5465 | (terminated strings are much easier to work with). */ | |
5466 | p = next; | |
5467 | end = strchr (p, ';'); | |
5468 | if (end == NULL) | |
5469 | { | |
5470 | end = p + strlen (p); | |
5471 | next = end; | |
5472 | } | |
5473 | else | |
5474 | { | |
89be2091 DJ |
5475 | *end = '\0'; |
5476 | next = end + 1; | |
5477 | ||
be2a5f71 DJ |
5478 | if (end == p) |
5479 | { | |
5480 | warning (_("empty item in \"qSupported\" response")); | |
5481 | continue; | |
5482 | } | |
be2a5f71 DJ |
5483 | } |
5484 | ||
5485 | name_end = strchr (p, '='); | |
5486 | if (name_end) | |
5487 | { | |
5488 | /* This is a name=value entry. */ | |
5489 | is_supported = PACKET_ENABLE; | |
5490 | value = name_end + 1; | |
5491 | *name_end = '\0'; | |
5492 | } | |
5493 | else | |
5494 | { | |
5495 | value = NULL; | |
5496 | switch (end[-1]) | |
5497 | { | |
5498 | case '+': | |
5499 | is_supported = PACKET_ENABLE; | |
5500 | break; | |
5501 | ||
5502 | case '-': | |
5503 | is_supported = PACKET_DISABLE; | |
5504 | break; | |
5505 | ||
5506 | case '?': | |
5507 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5508 | break; | |
5509 | ||
5510 | default: | |
3e43a32a MS |
5511 | warning (_("unrecognized item \"%s\" " |
5512 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5513 | continue; |
5514 | } | |
5515 | end[-1] = '\0'; | |
5516 | } | |
5517 | ||
5518 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5519 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5520 | { | |
5521 | const struct protocol_feature *feature; | |
5522 | ||
5523 | seen[i] = 1; | |
5524 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5525 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5526 | break; |
5527 | } | |
5528 | } | |
5529 | ||
5530 | /* If we increased the packet size, make sure to increase the global | |
5531 | buffer size also. We delay this until after parsing the entire | |
5532 | qSupported packet, because this is the same buffer we were | |
5533 | parsing. */ | |
8d64371b TT |
5534 | if (rs->buf.size () < rs->explicit_packet_size) |
5535 | rs->buf.resize (rs->explicit_packet_size); | |
be2a5f71 DJ |
5536 | |
5537 | /* Handle the defaults for unmentioned features. */ | |
5538 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5539 | if (!seen[i]) | |
5540 | { | |
5541 | const struct protocol_feature *feature; | |
5542 | ||
5543 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5544 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5545 | } |
5546 | } | |
5547 | ||
048094ac PA |
5548 | /* Serial QUIT handler for the remote serial descriptor. |
5549 | ||
5550 | Defers handling a Ctrl-C until we're done with the current | |
5551 | command/response packet sequence, unless: | |
5552 | ||
5553 | - We're setting up the connection. Don't send a remote interrupt | |
5554 | request, as we're not fully synced yet. Quit immediately | |
5555 | instead. | |
5556 | ||
5557 | - The target has been resumed in the foreground | |
223ffa71 | 5558 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5559 | packet, and we're blocked waiting for the stop reply, thus a |
5560 | Ctrl-C should be immediately sent to the target. | |
5561 | ||
5562 | - We get a second Ctrl-C while still within the same serial read or | |
5563 | write. In that case the serial is seemingly wedged --- offer to | |
5564 | quit/disconnect. | |
5565 | ||
5566 | - We see a second Ctrl-C without target response, after having | |
5567 | previously interrupted the target. In that case the target/stub | |
5568 | is probably wedged --- offer to quit/disconnect. | |
5569 | */ | |
5570 | ||
6b8edb51 PA |
5571 | void |
5572 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5573 | { |
5574 | struct remote_state *rs = get_remote_state (); | |
5575 | ||
5576 | if (check_quit_flag ()) | |
5577 | { | |
5578 | /* If we're starting up, we're not fully synced yet. Quit | |
5579 | immediately. */ | |
5580 | if (rs->starting_up) | |
5581 | quit (); | |
5582 | else if (rs->got_ctrlc_during_io) | |
5583 | { | |
5584 | if (query (_("The target is not responding to GDB commands.\n" | |
5585 | "Stop debugging it? "))) | |
5b6d1e4f | 5586 | remote_unpush_and_throw (this); |
048094ac PA |
5587 | } |
5588 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5589 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5590 | interrupt_query (); |
5591 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5592 | an interrupt request. */ | |
223ffa71 | 5593 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5594 | target_interrupt (); |
048094ac PA |
5595 | else |
5596 | rs->got_ctrlc_during_io = 1; | |
5597 | } | |
5598 | } | |
5599 | ||
6b8edb51 PA |
5600 | /* The remote_target that is current while the quit handler is |
5601 | overridden with remote_serial_quit_handler. */ | |
5602 | static remote_target *curr_quit_handler_target; | |
5603 | ||
5604 | static void | |
5605 | remote_serial_quit_handler () | |
5606 | { | |
5607 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5608 | } | |
5609 | ||
5b6d1e4f PA |
5610 | /* Remove the remote target from the target stack of each inferior |
5611 | that is using it. Upper targets depend on it so remove them | |
5612 | first. */ | |
78a095c3 JK |
5613 | |
5614 | static void | |
5b6d1e4f | 5615 | remote_unpush_target (remote_target *target) |
78a095c3 | 5616 | { |
5b6d1e4f PA |
5617 | /* We have to unpush the target from all inferiors, even those that |
5618 | aren't running. */ | |
5619 | scoped_restore_current_inferior restore_current_inferior; | |
5620 | ||
5621 | for (inferior *inf : all_inferiors (target)) | |
5622 | { | |
5623 | switch_to_inferior_no_thread (inf); | |
5624 | pop_all_targets_at_and_above (process_stratum); | |
5625 | generic_mourn_inferior (); | |
5626 | } | |
78a095c3 | 5627 | } |
be2a5f71 | 5628 | |
048094ac | 5629 | static void |
5b6d1e4f | 5630 | remote_unpush_and_throw (remote_target *target) |
048094ac | 5631 | { |
5b6d1e4f | 5632 | remote_unpush_target (target); |
048094ac PA |
5633 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
5634 | } | |
5635 | ||
f6ac5f3d PA |
5636 | void |
5637 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5638 | { |
6b8edb51 | 5639 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5640 | |
c906108c | 5641 | if (name == 0) |
8a3fe4f8 | 5642 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5643 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5644 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5645 | |
2d717e4f | 5646 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5647 | Ask this question first, before target_preopen has a chance to kill |
5648 | anything. */ | |
55f6301a | 5649 | if (curr_remote != NULL && !target_has_execution ()) |
2d717e4f | 5650 | { |
78a095c3 JK |
5651 | if (from_tty |
5652 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5653 | error (_("Still connected.")); |
5654 | } | |
5655 | ||
78a095c3 | 5656 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5657 | target_preopen (from_tty); |
5658 | ||
ad9a8f3f | 5659 | remote_fileio_reset (); |
1dd41f16 NS |
5660 | reopen_exec_file (); |
5661 | reread_symbols (); | |
5662 | ||
6b8edb51 PA |
5663 | remote_target *remote |
5664 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5665 | target_ops_up target_holder (remote); | |
5666 | ||
5667 | remote_state *rs = remote->get_remote_state (); | |
5668 | ||
5669 | /* See FIXME above. */ | |
5670 | if (!target_async_permitted) | |
5671 | rs->wait_forever_enabled_p = 1; | |
5672 | ||
5d93a237 TT |
5673 | rs->remote_desc = remote_serial_open (name); |
5674 | if (!rs->remote_desc) | |
c906108c SS |
5675 | perror_with_name (name); |
5676 | ||
5677 | if (baud_rate != -1) | |
5678 | { | |
5d93a237 | 5679 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5680 | { |
9b74d5d3 KB |
5681 | /* The requested speed could not be set. Error out to |
5682 | top level after closing remote_desc. Take care to | |
5683 | set remote_desc to NULL to avoid closing remote_desc | |
5684 | more than once. */ | |
5d93a237 TT |
5685 | serial_close (rs->remote_desc); |
5686 | rs->remote_desc = NULL; | |
c906108c SS |
5687 | perror_with_name (name); |
5688 | } | |
5689 | } | |
5690 | ||
236af5e3 | 5691 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5692 | serial_raw (rs->remote_desc); |
c906108c SS |
5693 | |
5694 | /* If there is something sitting in the buffer we might take it as a | |
5695 | response to a command, which would be bad. */ | |
5d93a237 | 5696 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5697 | |
5698 | if (from_tty) | |
5699 | { | |
5700 | puts_filtered ("Remote debugging using "); | |
5701 | puts_filtered (name); | |
5702 | puts_filtered ("\n"); | |
5703 | } | |
d9f719f1 | 5704 | |
6b8edb51 | 5705 | /* Switch to using the remote target now. */ |
02980c56 | 5706 | current_inferior ()->push_target (std::move (target_holder)); |
c906108c | 5707 | |
74531fed | 5708 | /* Register extra event sources in the event loop. */ |
6b8edb51 | 5709 | rs->remote_async_inferior_event_token |
baa8575b | 5710 | = create_async_event_handler (remote_async_inferior_event_handler, nullptr, |
db20ebdf | 5711 | "remote"); |
6b8edb51 | 5712 | rs->notif_state = remote_notif_state_allocate (remote); |
74531fed | 5713 | |
be2a5f71 DJ |
5714 | /* Reset the target state; these things will be queried either by |
5715 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5716 | reset_all_packet_configs_support (); |
74531fed | 5717 | rs->cached_wait_status = 0; |
be2a5f71 | 5718 | rs->explicit_packet_size = 0; |
a6f3e723 | 5719 | rs->noack_mode = 0; |
82f73884 | 5720 | rs->extended = extended_p; |
e24a49d8 | 5721 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5722 | rs->ctrlc_pending_p = 0; |
048094ac | 5723 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5724 | |
47f8a51d TT |
5725 | rs->general_thread = not_sent_ptid; |
5726 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5727 | rs->remote_traceframe_number = -1; |
c906108c | 5728 | |
3a00c802 PA |
5729 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5730 | ||
9d1f7ab2 | 5731 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5732 | rs->use_threadinfo_query = 1; |
5733 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5734 | |
dd194f6b | 5735 | rs->readahead_cache.invalidate (); |
80152258 | 5736 | |
c6ebd6cf | 5737 | if (target_async_permitted) |
92d1e331 | 5738 | { |
92d1e331 DJ |
5739 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5740 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5741 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5742 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5743 | around this. Eventually a mechanism that allows |
92d1e331 | 5744 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5745 | implemented. */ |
6b8edb51 | 5746 | rs->wait_forever_enabled_p = 0; |
92d1e331 DJ |
5747 | } |
5748 | ||
23860348 | 5749 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5750 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5751 | |
36918e70 | 5752 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5753 | target (we'd otherwise be in an inconsistent state) and then |
5754 | propogate the error on up the exception chain. This ensures that | |
5755 | the caller doesn't stumble along blindly assuming that the | |
5756 | function succeeded. The CLI doesn't have this problem but other | |
5757 | UI's, such as MI do. | |
36918e70 AC |
5758 | |
5759 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5760 | this function should return an error indication letting the | |
ce2826aa | 5761 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5762 | ``target remote'' is directly wired to this function making that |
5763 | impossible. On a positive note, the CLI side of this problem has | |
5764 | been fixed - the function set_cmd_context() makes it possible for | |
5765 | all the ``target ....'' commands to share a common callback | |
5766 | function. See cli-dump.c. */ | |
109c3e39 | 5767 | { |
2d717e4f | 5768 | |
a70b8144 | 5769 | try |
04bd08de | 5770 | { |
6b8edb51 | 5771 | remote->start_remote (from_tty, extended_p); |
04bd08de | 5772 | } |
230d2906 | 5773 | catch (const gdb_exception &ex) |
109c3e39 | 5774 | { |
c8d104ad PA |
5775 | /* Pop the partially set up target - unless something else did |
5776 | already before throwing the exception. */ | |
6b8edb51 | 5777 | if (ex.error != TARGET_CLOSE_ERROR) |
5b6d1e4f | 5778 | remote_unpush_target (remote); |
eedc3f4f | 5779 | throw; |
109c3e39 AC |
5780 | } |
5781 | } | |
c906108c | 5782 | |
6b8edb51 | 5783 | remote_btrace_reset (rs); |
f4abbc16 | 5784 | |
c6ebd6cf | 5785 | if (target_async_permitted) |
6b8edb51 | 5786 | rs->wait_forever_enabled_p = 1; |
43ff13b4 JM |
5787 | } |
5788 | ||
de0d863e DB |
5789 | /* Detach the specified process. */ |
5790 | ||
6b8edb51 PA |
5791 | void |
5792 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
5793 | { |
5794 | struct remote_state *rs = get_remote_state (); | |
5795 | ||
4c7333b3 PA |
5796 | /* This should not be necessary, but the handling for D;PID in |
5797 | GDBserver versions prior to 8.2 incorrectly assumes that the | |
5798 | selected process points to the same process we're detaching, | |
5799 | leading to misbehavior (and possibly GDBserver crashing) when it | |
5800 | does not. Since it's easy and cheap, work around it by forcing | |
5801 | GDBserver to select GDB's current process. */ | |
5802 | set_general_process (); | |
5803 | ||
de0d863e | 5804 | if (remote_multi_process_p (rs)) |
8d64371b | 5805 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "D;%x", pid); |
de0d863e | 5806 | else |
8d64371b | 5807 | strcpy (rs->buf.data (), "D"); |
de0d863e DB |
5808 | |
5809 | putpkt (rs->buf); | |
8d64371b | 5810 | getpkt (&rs->buf, 0); |
de0d863e DB |
5811 | |
5812 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5813 | ; | |
5814 | else if (rs->buf[0] == '\0') | |
5815 | error (_("Remote doesn't know how to detach")); | |
5816 | else | |
5817 | error (_("Can't detach process.")); | |
5818 | } | |
5819 | ||
5820 | /* This detaches a program to which we previously attached, using | |
5821 | inferior_ptid to identify the process. After this is done, GDB | |
5822 | can be used to debug some other program. We better not have left | |
5823 | any breakpoints in the target program or it'll die when it hits | |
5824 | one. */ | |
c906108c | 5825 | |
6b8edb51 | 5826 | void |
00431a78 | 5827 | remote_target::remote_detach_1 (inferior *inf, int from_tty) |
c906108c | 5828 | { |
e99b03dc | 5829 | int pid = inferior_ptid.pid (); |
d01949b6 | 5830 | struct remote_state *rs = get_remote_state (); |
de0d863e | 5831 | int is_fork_parent; |
c906108c | 5832 | |
55f6301a | 5833 | if (!target_has_execution ()) |
2d717e4f DJ |
5834 | error (_("No process to detach from.")); |
5835 | ||
0f48b757 | 5836 | target_announce_detach (from_tty); |
7cee1e54 | 5837 | |
e87f0fe8 PA |
5838 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) |
5839 | { | |
5840 | /* If we're in breakpoints-always-inserted mode, or the inferior | |
5841 | is running, we have to remove breakpoints before detaching. | |
5842 | We don't do this in common code instead because not all | |
5843 | targets support removing breakpoints while the target is | |
5844 | running. The remote target / gdbserver does, though. */ | |
5845 | remove_breakpoints_inf (current_inferior ()); | |
5846 | } | |
5847 | ||
c906108c | 5848 | /* Tell the remote target to detach. */ |
de0d863e | 5849 | remote_detach_pid (pid); |
82f73884 | 5850 | |
8020350c | 5851 | /* Exit only if this is the only active inferior. */ |
5b6d1e4f | 5852 | if (from_tty && !rs->extended && number_of_live_inferiors (this) == 1) |
7cee1e54 | 5853 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5854 | |
5b6d1e4f | 5855 | thread_info *tp = find_thread_ptid (this, inferior_ptid); |
00431a78 | 5856 | |
de0d863e DB |
5857 | /* Check to see if we are detaching a fork parent. Note that if we |
5858 | are detaching a fork child, tp == NULL. */ | |
5859 | is_fork_parent = (tp != NULL | |
5860 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5861 | ||
5862 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5863 | breakpoints that should be available for the followed inferior. */ | |
5864 | if (!is_fork_parent) | |
f67c0c91 | 5865 | { |
249b5733 PA |
5866 | /* Save the pid as a string before mourning, since that will |
5867 | unpush the remote target, and we need the string after. */ | |
f2907e49 | 5868 | std::string infpid = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
5869 | |
5870 | target_mourn_inferior (inferior_ptid); | |
5871 | if (print_inferior_events) | |
5872 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
5873 | inf->num, infpid.c_str ()); | |
5874 | } | |
de0d863e DB |
5875 | else |
5876 | { | |
0ac55310 | 5877 | switch_to_no_thread (); |
00431a78 | 5878 | detach_inferior (current_inferior ()); |
de0d863e | 5879 | } |
2d717e4f DJ |
5880 | } |
5881 | ||
f6ac5f3d PA |
5882 | void |
5883 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5884 | { |
00431a78 | 5885 | remote_detach_1 (inf, from_tty); |
2d717e4f DJ |
5886 | } |
5887 | ||
f6ac5f3d PA |
5888 | void |
5889 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5890 | { |
00431a78 | 5891 | remote_detach_1 (inf, from_tty); |
de0d863e DB |
5892 | } |
5893 | ||
5894 | /* Target follow-fork function for remote targets. On entry, and | |
5895 | at return, the current inferior is the fork parent. | |
5896 | ||
5897 | Note that although this is currently only used for extended-remote, | |
5898 | it is named remote_follow_fork in anticipation of using it for the | |
5899 | remote target as well. */ | |
5900 | ||
e97007b6 | 5901 | void |
5ab2fbf1 | 5902 | remote_target::follow_fork (bool follow_child, bool detach_fork) |
de0d863e DB |
5903 | { |
5904 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5905 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5906 | |
c269dbdb DB |
5907 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5908 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5909 | { |
5910 | /* When following the parent and detaching the child, we detach | |
5911 | the child here. For the case of following the child and | |
5912 | detaching the parent, the detach is done in the target- | |
5913 | independent follow fork code in infrun.c. We can't use | |
5914 | target_detach when detaching an unfollowed child because | |
5915 | the client side doesn't know anything about the child. */ | |
5916 | if (detach_fork && !follow_child) | |
5917 | { | |
5918 | /* Detach the fork child. */ | |
5919 | ptid_t child_ptid; | |
5920 | pid_t child_pid; | |
5921 | ||
5922 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
e99b03dc | 5923 | child_pid = child_ptid.pid (); |
de0d863e DB |
5924 | |
5925 | remote_detach_pid (child_pid); | |
de0d863e DB |
5926 | } |
5927 | } | |
c906108c SS |
5928 | } |
5929 | ||
94585166 | 5930 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
294c36eb | 5931 | in the program space of the new inferior. */ |
94585166 | 5932 | |
f6ac5f3d | 5933 | void |
294c36eb SM |
5934 | remote_target::follow_exec (inferior *follow_inf, ptid_t ptid, |
5935 | const char *execd_pathname) | |
94585166 | 5936 | { |
294c36eb SM |
5937 | process_stratum_target::follow_exec (follow_inf, ptid, execd_pathname); |
5938 | ||
94585166 DB |
5939 | /* We know that this is a target file name, so if it has the "target:" |
5940 | prefix we strip it off before saving it in the program space. */ | |
5941 | if (is_target_filename (execd_pathname)) | |
5942 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5943 | ||
294c36eb | 5944 | set_pspace_remote_exec_file (follow_inf->pspace, execd_pathname); |
94585166 DB |
5945 | } |
5946 | ||
6ad8ae5c DJ |
5947 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5948 | ||
f6ac5f3d PA |
5949 | void |
5950 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 5951 | { |
43ff13b4 | 5952 | if (args) |
2d717e4f | 5953 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5954 | |
8020350c | 5955 | /* Make sure we unpush even the extended remote targets. Calling |
5b6d1e4f PA |
5956 | target_mourn_inferior won't unpush, and |
5957 | remote_target::mourn_inferior won't unpush if there is more than | |
5958 | one inferior left. */ | |
5959 | remote_unpush_target (this); | |
2d717e4f | 5960 | |
43ff13b4 JM |
5961 | if (from_tty) |
5962 | puts_filtered ("Ending remote debugging.\n"); | |
5963 | } | |
5964 | ||
2d717e4f DJ |
5965 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5966 | be chatty about it. */ | |
5967 | ||
f6ac5f3d PA |
5968 | void |
5969 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
5970 | { |
5971 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5972 | int pid; |
96ef3384 | 5973 | char *wait_status = NULL; |
2d717e4f | 5974 | |
74164c56 | 5975 | pid = parse_pid_to_attach (args); |
2d717e4f | 5976 | |
74164c56 JK |
5977 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5978 | way as in other targets. */ | |
2d717e4f | 5979 | |
4082afcc | 5980 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5981 | error (_("This target does not support attaching to a process")); |
5982 | ||
7cee1e54 PA |
5983 | if (from_tty) |
5984 | { | |
d9fa87f4 | 5985 | const char *exec_file = get_exec_file (0); |
7cee1e54 PA |
5986 | |
5987 | if (exec_file) | |
5988 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
a068643d | 5989 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
5990 | else |
5991 | printf_unfiltered (_("Attaching to %s\n"), | |
a068643d | 5992 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
5993 | } |
5994 | ||
8d64371b | 5995 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f | 5996 | putpkt (rs->buf); |
8d64371b | 5997 | getpkt (&rs->buf, 0); |
2d717e4f | 5998 | |
4082afcc PA |
5999 | switch (packet_ok (rs->buf, |
6000 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 6001 | { |
4082afcc | 6002 | case PACKET_OK: |
6efcd9a8 | 6003 | if (!target_is_non_stop_p ()) |
74531fed PA |
6004 | { |
6005 | /* Save the reply for later. */ | |
8d64371b TT |
6006 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
6007 | strcpy (wait_status, rs->buf.data ()); | |
74531fed | 6008 | } |
8d64371b | 6009 | else if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 6010 | error (_("Attaching to %s failed with: %s"), |
a068643d | 6011 | target_pid_to_str (ptid_t (pid)).c_str (), |
8d64371b | 6012 | rs->buf.data ()); |
4082afcc PA |
6013 | break; |
6014 | case PACKET_UNKNOWN: | |
6015 | error (_("This target does not support attaching to a process")); | |
6016 | default: | |
50fa3001 SDJ |
6017 | error (_("Attaching to %s failed"), |
6018 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
2d717e4f | 6019 | } |
2d717e4f | 6020 | |
0ac55310 | 6021 | switch_to_inferior_no_thread (remote_add_inferior (false, pid, 1, 0)); |
bad34192 | 6022 | |
f2907e49 | 6023 | inferior_ptid = ptid_t (pid); |
79d7f229 | 6024 | |
6efcd9a8 | 6025 | if (target_is_non_stop_p ()) |
bad34192 | 6026 | { |
bad34192 | 6027 | /* Get list of threads. */ |
f6ac5f3d | 6028 | update_thread_list (); |
82f73884 | 6029 | |
0ac55310 PA |
6030 | thread_info *thread = first_thread_of_inferior (current_inferior ()); |
6031 | if (thread != nullptr) | |
6032 | switch_to_thread (thread); | |
bad34192 PA |
6033 | |
6034 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 6035 | record_currthread (rs, minus_one_ptid); |
bad34192 | 6036 | } |
74531fed | 6037 | else |
bad34192 | 6038 | { |
0ac55310 PA |
6039 | /* Now, if we have thread information, update the main thread's |
6040 | ptid. */ | |
6041 | ptid_t curr_ptid = remote_current_thread (ptid_t (pid)); | |
bad34192 PA |
6042 | |
6043 | /* Add the main thread to the thread list. */ | |
0ac55310 PA |
6044 | thread_info *thr = add_thread_silent (this, curr_ptid); |
6045 | ||
6046 | switch_to_thread (thr); | |
6047 | ||
00aecdcf PA |
6048 | /* Don't consider the thread stopped until we've processed the |
6049 | saved stop reply. */ | |
5b6d1e4f | 6050 | set_executing (this, thr->ptid, true); |
bad34192 | 6051 | } |
c0a2216e | 6052 | |
96ef3384 UW |
6053 | /* Next, if the target can specify a description, read it. We do |
6054 | this before anything involving memory or registers. */ | |
6055 | target_find_description (); | |
6056 | ||
6efcd9a8 | 6057 | if (!target_is_non_stop_p ()) |
74531fed PA |
6058 | { |
6059 | /* Use the previously fetched status. */ | |
6060 | gdb_assert (wait_status != NULL); | |
6061 | ||
6062 | if (target_can_async_p ()) | |
6063 | { | |
722247f1 | 6064 | struct notif_event *reply |
6b8edb51 | 6065 | = remote_notif_parse (this, ¬if_client_stop, wait_status); |
74531fed | 6066 | |
722247f1 | 6067 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 6068 | |
6a3753b3 | 6069 | target_async (1); |
74531fed PA |
6070 | } |
6071 | else | |
6072 | { | |
6073 | gdb_assert (wait_status != NULL); | |
8d64371b | 6074 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
6075 | rs->cached_wait_status = 1; |
6076 | } | |
6077 | } | |
6078 | else | |
621cc310 PA |
6079 | { |
6080 | gdb_assert (wait_status == NULL); | |
6081 | ||
6082 | gdb_assert (target_can_async_p ()); | |
6083 | target_async (1); | |
6084 | } | |
2d717e4f DJ |
6085 | } |
6086 | ||
b9c1d481 AS |
6087 | /* Implementation of the to_post_attach method. */ |
6088 | ||
f6ac5f3d PA |
6089 | void |
6090 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 6091 | { |
6efcd9a8 PA |
6092 | /* Get text, data & bss offsets. */ |
6093 | get_offsets (); | |
6094 | ||
b9c1d481 AS |
6095 | /* In certain cases GDB might not have had the chance to start |
6096 | symbol lookup up until now. This could happen if the debugged | |
6097 | binary is not using shared libraries, the vsyscall page is not | |
6098 | present (on Linux) and the binary itself hadn't changed since the | |
6099 | debugging process was started. */ | |
a42d7dd8 | 6100 | if (current_program_space->symfile_object_file != NULL) |
b9c1d481 AS |
6101 | remote_check_symbols(); |
6102 | } | |
6103 | ||
c906108c | 6104 | \f |
506fb367 DJ |
6105 | /* Check for the availability of vCont. This function should also check |
6106 | the response. */ | |
c906108c | 6107 | |
6b8edb51 PA |
6108 | void |
6109 | remote_target::remote_vcont_probe () | |
c906108c | 6110 | { |
6b8edb51 | 6111 | remote_state *rs = get_remote_state (); |
2e9f7625 | 6112 | char *buf; |
6d820c5c | 6113 | |
8d64371b | 6114 | strcpy (rs->buf.data (), "vCont?"); |
2e9f7625 | 6115 | putpkt (rs->buf); |
8d64371b TT |
6116 | getpkt (&rs->buf, 0); |
6117 | buf = rs->buf.data (); | |
c906108c | 6118 | |
506fb367 | 6119 | /* Make sure that the features we assume are supported. */ |
61012eef | 6120 | if (startswith (buf, "vCont")) |
506fb367 DJ |
6121 | { |
6122 | char *p = &buf[5]; | |
750ce8d1 | 6123 | int support_c, support_C; |
506fb367 | 6124 | |
750ce8d1 YQ |
6125 | rs->supports_vCont.s = 0; |
6126 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
6127 | support_c = 0; |
6128 | support_C = 0; | |
d458bd84 | 6129 | rs->supports_vCont.t = 0; |
c1e36e3e | 6130 | rs->supports_vCont.r = 0; |
506fb367 DJ |
6131 | while (p && *p == ';') |
6132 | { | |
6133 | p++; | |
6134 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 6135 | rs->supports_vCont.s = 1; |
506fb367 | 6136 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 6137 | rs->supports_vCont.S = 1; |
506fb367 DJ |
6138 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6139 | support_c = 1; | |
6140 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
6141 | support_C = 1; | |
74531fed | 6142 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 6143 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
6144 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6145 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
6146 | |
6147 | p = strchr (p, ';'); | |
6148 | } | |
c906108c | 6149 | |
750ce8d1 YQ |
6150 | /* If c, and C are not all supported, we can't use vCont. Clearing |
6151 | BUF will make packet_ok disable the packet. */ | |
6152 | if (!support_c || !support_C) | |
506fb367 DJ |
6153 | buf[0] = 0; |
6154 | } | |
c906108c | 6155 | |
8d64371b | 6156 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCont]); |
5b6d1e4f | 6157 | rs->supports_vCont_probed = true; |
506fb367 | 6158 | } |
c906108c | 6159 | |
0d8f58ca PA |
6160 | /* Helper function for building "vCont" resumptions. Write a |
6161 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
6162 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
6163 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
6164 | resumed thread should be single-stepped and/or signalled. If PTID | |
6165 | equals minus_one_ptid, then all threads are resumed; if PTID | |
6166 | represents a process, then all threads of the process are resumed; | |
6167 | the thread to be stepped and/or signalled is given in the global | |
6168 | INFERIOR_PTID. */ | |
6169 | ||
6b8edb51 PA |
6170 | char * |
6171 | remote_target::append_resumption (char *p, char *endp, | |
6172 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
6173 | { |
6174 | struct remote_state *rs = get_remote_state (); | |
6175 | ||
a493e3e2 | 6176 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 6177 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
6178 | else if (step |
6179 | /* GDB is willing to range step. */ | |
6180 | && use_range_stepping | |
6181 | /* Target supports range stepping. */ | |
6182 | && rs->supports_vCont.r | |
6183 | /* We don't currently support range stepping multiple | |
6184 | threads with a wildcard (though the protocol allows it, | |
6185 | so stubs shouldn't make an active effort to forbid | |
6186 | it). */ | |
0e998d96 | 6187 | && !(remote_multi_process_p (rs) && ptid.is_pid ())) |
c1e36e3e PA |
6188 | { |
6189 | struct thread_info *tp; | |
6190 | ||
d7e15655 | 6191 | if (ptid == minus_one_ptid) |
c1e36e3e PA |
6192 | { |
6193 | /* If we don't know about the target thread's tid, then | |
6194 | we're resuming magic_null_ptid (see caller). */ | |
5b6d1e4f | 6195 | tp = find_thread_ptid (this, magic_null_ptid); |
c1e36e3e PA |
6196 | } |
6197 | else | |
5b6d1e4f | 6198 | tp = find_thread_ptid (this, ptid); |
c1e36e3e PA |
6199 | gdb_assert (tp != NULL); |
6200 | ||
6201 | if (tp->control.may_range_step) | |
6202 | { | |
6203 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
6204 | ||
6205 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6206 | phex_nz (tp->control.step_range_start, | |
6207 | addr_size), | |
6208 | phex_nz (tp->control.step_range_end, | |
6209 | addr_size)); | |
6210 | } | |
6211 | else | |
6212 | p += xsnprintf (p, endp - p, ";s"); | |
6213 | } | |
0d8f58ca PA |
6214 | else if (step) |
6215 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6216 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6217 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6218 | else | |
6219 | p += xsnprintf (p, endp - p, ";c"); | |
6220 | ||
0e998d96 | 6221 | if (remote_multi_process_p (rs) && ptid.is_pid ()) |
0d8f58ca PA |
6222 | { |
6223 | ptid_t nptid; | |
6224 | ||
6225 | /* All (-1) threads of process. */ | |
e99b03dc | 6226 | nptid = ptid_t (ptid.pid (), -1, 0); |
0d8f58ca PA |
6227 | |
6228 | p += xsnprintf (p, endp - p, ":"); | |
6229 | p = write_ptid (p, endp, nptid); | |
6230 | } | |
d7e15655 | 6231 | else if (ptid != minus_one_ptid) |
0d8f58ca PA |
6232 | { |
6233 | p += xsnprintf (p, endp - p, ":"); | |
6234 | p = write_ptid (p, endp, ptid); | |
6235 | } | |
6236 | ||
6237 | return p; | |
6238 | } | |
6239 | ||
799a2abe PA |
6240 | /* Clear the thread's private info on resume. */ |
6241 | ||
6242 | static void | |
6243 | resume_clear_thread_private_info (struct thread_info *thread) | |
6244 | { | |
6245 | if (thread->priv != NULL) | |
6246 | { | |
7aabaf9d SM |
6247 | remote_thread_info *priv = get_remote_thread_info (thread); |
6248 | ||
6249 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6250 | priv->watch_data_address = 0; | |
799a2abe PA |
6251 | } |
6252 | } | |
6253 | ||
e5ef252a PA |
6254 | /* Append a vCont continue-with-signal action for threads that have a |
6255 | non-zero stop signal. */ | |
6256 | ||
6b8edb51 PA |
6257 | char * |
6258 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6259 | ptid_t ptid) | |
e5ef252a | 6260 | { |
5b6d1e4f | 6261 | for (thread_info *thread : all_non_exited_threads (this, ptid)) |
08036331 | 6262 | if (inferior_ptid != thread->ptid |
70509625 | 6263 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
6264 | { |
6265 | p = append_resumption (p, endp, thread->ptid, | |
6266 | 0, thread->suspend.stop_signal); | |
6267 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 6268 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6269 | } |
6270 | ||
6271 | return p; | |
6272 | } | |
6273 | ||
7b68ffbb PA |
6274 | /* Set the target running, using the packets that use Hc |
6275 | (c/s/C/S). */ | |
6276 | ||
6b8edb51 PA |
6277 | void |
6278 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6279 | gdb_signal siggnal) | |
7b68ffbb PA |
6280 | { |
6281 | struct remote_state *rs = get_remote_state (); | |
7b68ffbb PA |
6282 | char *buf; |
6283 | ||
6284 | rs->last_sent_signal = siggnal; | |
6285 | rs->last_sent_step = step; | |
6286 | ||
6287 | /* The c/s/C/S resume packets use Hc, so set the continue | |
6288 | thread. */ | |
d7e15655 | 6289 | if (ptid == minus_one_ptid) |
7b68ffbb PA |
6290 | set_continue_thread (any_thread_ptid); |
6291 | else | |
6292 | set_continue_thread (ptid); | |
6293 | ||
5b6d1e4f | 6294 | for (thread_info *thread : all_non_exited_threads (this)) |
7b68ffbb PA |
6295 | resume_clear_thread_private_info (thread); |
6296 | ||
8d64371b | 6297 | buf = rs->buf.data (); |
6b8edb51 | 6298 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6299 | { |
6300 | /* We don't pass signals to the target in reverse exec mode. */ | |
6301 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
6302 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
6303 | siggnal); | |
6304 | ||
6305 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
6306 | error (_("Remote reverse-step not supported.")); | |
6307 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
6308 | error (_("Remote reverse-continue not supported.")); | |
6309 | ||
6310 | strcpy (buf, step ? "bs" : "bc"); | |
6311 | } | |
6312 | else if (siggnal != GDB_SIGNAL_0) | |
6313 | { | |
6314 | buf[0] = step ? 'S' : 'C'; | |
6315 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
6316 | buf[2] = tohex (((int) siggnal) & 0xf); | |
6317 | buf[3] = '\0'; | |
6318 | } | |
6319 | else | |
6320 | strcpy (buf, step ? "s" : "c"); | |
6321 | ||
6322 | putpkt (buf); | |
6323 | } | |
6324 | ||
506fb367 DJ |
6325 | /* Resume the remote inferior by using a "vCont" packet. The thread |
6326 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
6327 | resumed thread should be single-stepped and/or signalled. If PTID |
6328 | equals minus_one_ptid, then all threads are resumed; the thread to | |
6329 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
6330 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 6331 | |
7b68ffbb PA |
6332 | This function issues a strict subset of all possible vCont commands |
6333 | at the moment. */ | |
44eaed12 | 6334 | |
6b8edb51 PA |
6335 | int |
6336 | remote_target::remote_resume_with_vcont (ptid_t ptid, int step, | |
6337 | enum gdb_signal siggnal) | |
506fb367 DJ |
6338 | { |
6339 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
6340 | char *p; |
6341 | char *endp; | |
44eaed12 | 6342 | |
7b68ffbb | 6343 | /* No reverse execution actions defined for vCont. */ |
6b8edb51 | 6344 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6345 | return 0; |
6346 | ||
4082afcc | 6347 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6348 | remote_vcont_probe (); |
44eaed12 | 6349 | |
4082afcc | 6350 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 6351 | return 0; |
44eaed12 | 6352 | |
8d64371b TT |
6353 | p = rs->buf.data (); |
6354 | endp = p + get_remote_packet_size (); | |
82f73884 | 6355 | |
506fb367 DJ |
6356 | /* If we could generate a wider range of packets, we'd have to worry |
6357 | about overflowing BUF. Should there be a generic | |
6358 | "multi-part-packet" packet? */ | |
6359 | ||
0d8f58ca PA |
6360 | p += xsnprintf (p, endp - p, "vCont"); |
6361 | ||
d7e15655 | 6362 | if (ptid == magic_null_ptid) |
c906108c | 6363 | { |
79d7f229 PA |
6364 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
6365 | so we don't have any TID numbers the inferior will | |
6366 | understand. Make sure to only send forms that do not specify | |
6367 | a TID. */ | |
a9cbf802 | 6368 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 6369 | } |
d7e15655 | 6370 | else if (ptid == minus_one_ptid || ptid.is_pid ()) |
506fb367 | 6371 | { |
0d8f58ca PA |
6372 | /* Resume all threads (of all processes, or of a single |
6373 | process), with preference for INFERIOR_PTID. This assumes | |
6374 | inferior_ptid belongs to the set of all threads we are about | |
6375 | to resume. */ | |
a493e3e2 | 6376 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 6377 | { |
0d8f58ca PA |
6378 | /* Step inferior_ptid, with or without signal. */ |
6379 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 6380 | } |
0d8f58ca | 6381 | |
e5ef252a PA |
6382 | /* Also pass down any pending signaled resumption for other |
6383 | threads not the current. */ | |
6384 | p = append_pending_thread_resumptions (p, endp, ptid); | |
6385 | ||
0d8f58ca | 6386 | /* And continue others without a signal. */ |
a493e3e2 | 6387 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
6388 | } |
6389 | else | |
506fb367 DJ |
6390 | { |
6391 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 6392 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 6393 | } |
c906108c | 6394 | |
8d64371b | 6395 | gdb_assert (strlen (rs->buf.data ()) < get_remote_packet_size ()); |
82f73884 | 6396 | putpkt (rs->buf); |
506fb367 | 6397 | |
6efcd9a8 | 6398 | if (target_is_non_stop_p ()) |
74531fed PA |
6399 | { |
6400 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6401 | reply will be reported asynchronously by means of a `%Stop' | |
6402 | notification. */ | |
8d64371b TT |
6403 | getpkt (&rs->buf, 0); |
6404 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6405 | error (_("Unexpected vCont reply in non-stop mode: %s"), | |
6406 | rs->buf.data ()); | |
74531fed PA |
6407 | } |
6408 | ||
506fb367 | 6409 | return 1; |
c906108c | 6410 | } |
43ff13b4 | 6411 | |
506fb367 DJ |
6412 | /* Tell the remote machine to resume. */ |
6413 | ||
f6ac5f3d PA |
6414 | void |
6415 | remote_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal) | |
43ff13b4 | 6416 | { |
d01949b6 | 6417 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6418 | |
85ad3aaf PA |
6419 | /* When connected in non-stop mode, the core resumes threads |
6420 | individually. Resuming remote threads directly in target_resume | |
6421 | would thus result in sending one packet per thread. Instead, to | |
6422 | minimize roundtrip latency, here we just store the resume | |
c9d22089 SM |
6423 | request (put the thread in RESUMED_PENDING_VCONT state); the actual remote |
6424 | resumption will be done in remote_target::commit_resume, where we'll be | |
6425 | able to do vCont action coalescing. */ | |
f6ac5f3d | 6426 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6427 | { |
7aabaf9d | 6428 | remote_thread_info *remote_thr; |
85ad3aaf | 6429 | |
d7e15655 | 6430 | if (minus_one_ptid == ptid || ptid.is_pid ()) |
5b6d1e4f | 6431 | remote_thr = get_remote_thread_info (this, inferior_ptid); |
85ad3aaf | 6432 | else |
5b6d1e4f | 6433 | remote_thr = get_remote_thread_info (this, ptid); |
7aabaf9d | 6434 | |
c9d22089 SM |
6435 | /* We don't expect the core to ask to resume an already resumed (from |
6436 | its point of view) thread. */ | |
a6c11cbb | 6437 | gdb_assert (remote_thr->get_resume_state () == resume_state::NOT_RESUMED); |
c9d22089 SM |
6438 | |
6439 | remote_thr->set_resumed_pending_vcont (step, siggnal); | |
85ad3aaf PA |
6440 | return; |
6441 | } | |
6442 | ||
722247f1 YQ |
6443 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6444 | (explained in remote-notif.c:handle_notification) so | |
6445 | remote_notif_process is not called. We need find a place where | |
6446 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6447 | before resuming inferior, because inferior was stopped and no RSP | |
6448 | traffic at that moment. */ | |
6efcd9a8 | 6449 | if (!target_is_non_stop_p ()) |
5965e028 | 6450 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6451 | |
f6ac5f3d | 6452 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6453 | |
7b68ffbb PA |
6454 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
6455 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
6b8edb51 | 6456 | remote_resume_with_hc (ptid, step, siggnal); |
43ff13b4 | 6457 | |
c9d22089 SM |
6458 | /* Update resumed state tracked by the remote target. */ |
6459 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
6460 | get_remote_thread_info (tp)->set_resumed (); | |
6461 | ||
2acceee2 | 6462 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
6463 | with the event loop. NOTE: this is the one place where all the |
6464 | execution commands end up. We could alternatively do this in each | |
23860348 | 6465 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
6466 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
6467 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 6468 | NOT asynchronously. */ |
362646f5 | 6469 | if (target_can_async_p ()) |
6a3753b3 | 6470 | target_async (1); |
e24a49d8 PA |
6471 | |
6472 | /* We've just told the target to resume. The remote server will | |
6473 | wait for the inferior to stop, and then send a stop reply. In | |
6474 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6475 | because the stub wouldn't be ready to process it. This applies |
6476 | only to the base all-stop protocol, however. In non-stop (which | |
6477 | only supports vCont), the stub replies with an "OK", and is | |
6478 | immediate able to process further serial input. */ | |
6efcd9a8 | 6479 | if (!target_is_non_stop_p ()) |
74531fed | 6480 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6481 | } |
85ad3aaf | 6482 | |
85ad3aaf PA |
6483 | static int is_pending_fork_parent_thread (struct thread_info *thread); |
6484 | ||
6485 | /* Private per-inferior info for target remote processes. */ | |
6486 | ||
089354bb | 6487 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6488 | { |
6489 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6490 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6491 | }; |
6492 | ||
089354bb SM |
6493 | /* Get the remote private inferior data associated to INF. */ |
6494 | ||
6495 | static remote_inferior * | |
6496 | get_remote_inferior (inferior *inf) | |
6497 | { | |
6498 | if (inf->priv == NULL) | |
6499 | inf->priv.reset (new remote_inferior); | |
6500 | ||
6501 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6502 | } | |
6503 | ||
1192f124 SM |
6504 | struct stop_reply : public notif_event |
6505 | { | |
6506 | ~stop_reply (); | |
6507 | ||
6508 | /* The identifier of the thread about this event */ | |
6509 | ptid_t ptid; | |
6510 | ||
6511 | /* The remote state this event is associated with. When the remote | |
6512 | connection, represented by a remote_state object, is closed, | |
6513 | all the associated stop_reply events should be released. */ | |
6514 | struct remote_state *rs; | |
6515 | ||
6516 | struct target_waitstatus ws; | |
6517 | ||
6518 | /* The architecture associated with the expedited registers. */ | |
6519 | gdbarch *arch; | |
6520 | ||
6521 | /* Expedited registers. This makes remote debugging a bit more | |
6522 | efficient for those targets that provide critical registers as | |
6523 | part of their normal status mechanism (as another roundtrip to | |
6524 | fetch them is avoided). */ | |
6525 | std::vector<cached_reg_t> regcache; | |
6526 | ||
6527 | enum target_stop_reason stop_reason; | |
6528 | ||
6529 | CORE_ADDR watch_data_address; | |
6530 | ||
6531 | int core; | |
6532 | }; | |
6533 | ||
f5db4863 | 6534 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6535 | outgoing packet buffer. This is used to send multiple vCont |
6536 | packets if we have more actions than would fit a single packet. */ | |
6537 | ||
f5db4863 | 6538 | class vcont_builder |
85ad3aaf | 6539 | { |
f5db4863 | 6540 | public: |
6b8edb51 PA |
6541 | explicit vcont_builder (remote_target *remote) |
6542 | : m_remote (remote) | |
f5db4863 PA |
6543 | { |
6544 | restart (); | |
6545 | } | |
6546 | ||
6547 | void flush (); | |
6548 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6549 | ||
6550 | private: | |
6551 | void restart (); | |
6552 | ||
6b8edb51 PA |
6553 | /* The remote target. */ |
6554 | remote_target *m_remote; | |
6555 | ||
85ad3aaf PA |
6556 | /* Pointer to the first action. P points here if no action has been |
6557 | appended yet. */ | |
f5db4863 | 6558 | char *m_first_action; |
85ad3aaf PA |
6559 | |
6560 | /* Where the next action will be appended. */ | |
f5db4863 | 6561 | char *m_p; |
85ad3aaf PA |
6562 | |
6563 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6564 | char *m_endp; |
85ad3aaf PA |
6565 | }; |
6566 | ||
6567 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6568 | ||
f5db4863 PA |
6569 | void |
6570 | vcont_builder::restart () | |
85ad3aaf | 6571 | { |
6b8edb51 | 6572 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6573 | |
8d64371b TT |
6574 | m_p = rs->buf.data (); |
6575 | m_endp = m_p + m_remote->get_remote_packet_size (); | |
f5db4863 PA |
6576 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6577 | m_first_action = m_p; | |
85ad3aaf PA |
6578 | } |
6579 | ||
6580 | /* If the vCont packet being built has any action, send it to the | |
6581 | remote end. */ | |
6582 | ||
f5db4863 PA |
6583 | void |
6584 | vcont_builder::flush () | |
85ad3aaf PA |
6585 | { |
6586 | struct remote_state *rs; | |
6587 | ||
f5db4863 | 6588 | if (m_p == m_first_action) |
85ad3aaf PA |
6589 | return; |
6590 | ||
6b8edb51 PA |
6591 | rs = m_remote->get_remote_state (); |
6592 | m_remote->putpkt (rs->buf); | |
8d64371b TT |
6593 | m_remote->getpkt (&rs->buf, 0); |
6594 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6595 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf.data ()); | |
85ad3aaf PA |
6596 | } |
6597 | ||
6598 | /* The largest action is range-stepping, with its two addresses. This | |
6599 | is more than sufficient. If a new, bigger action is created, it'll | |
6600 | quickly trigger a failed assertion in append_resumption (and we'll | |
6601 | just bump this). */ | |
6602 | #define MAX_ACTION_SIZE 200 | |
6603 | ||
6604 | /* Append a new vCont action in the outgoing packet being built. If | |
6605 | the action doesn't fit the packet along with previous actions, push | |
6606 | what we've got so far to the remote end and start over a new vCont | |
6607 | packet (with the new action). */ | |
6608 | ||
f5db4863 PA |
6609 | void |
6610 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6611 | { |
6612 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6613 | |
6b8edb51 PA |
6614 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6615 | ptid, step, siggnal); | |
85ad3aaf PA |
6616 | |
6617 | /* Check whether this new action would fit in the vCont packet along | |
6618 | with previous actions. If not, send what we've got so far and | |
6619 | start a new vCont packet. */ | |
f5db4863 PA |
6620 | size_t rsize = endp - buf; |
6621 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6622 | { |
f5db4863 PA |
6623 | flush (); |
6624 | restart (); | |
85ad3aaf PA |
6625 | |
6626 | /* Should now fit. */ | |
f5db4863 | 6627 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6628 | } |
6629 | ||
f5db4863 PA |
6630 | memcpy (m_p, buf, rsize); |
6631 | m_p += rsize; | |
6632 | *m_p = '\0'; | |
85ad3aaf PA |
6633 | } |
6634 | ||
6635 | /* to_commit_resume implementation. */ | |
6636 | ||
f6ac5f3d | 6637 | void |
1192f124 | 6638 | remote_target::commit_resumed () |
85ad3aaf | 6639 | { |
85ad3aaf PA |
6640 | /* If connected in all-stop mode, we'd send the remote resume |
6641 | request directly from remote_resume. Likewise if | |
6642 | reverse-debugging, as there are no defined vCont actions for | |
6643 | reverse execution. */ | |
f6ac5f3d | 6644 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6645 | return; |
6646 | ||
6647 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6648 | instead of resuming all threads of each process individually. | |
6649 | However, if any thread of a process must remain halted, we can't | |
6650 | send wildcard resumes and must send one action per thread. | |
6651 | ||
6652 | Care must be taken to not resume threads/processes the server | |
6653 | side already told us are stopped, but the core doesn't know about | |
6654 | yet, because the events are still in the vStopped notification | |
6655 | queue. For example: | |
6656 | ||
6657 | #1 => vCont s:p1.1;c | |
6658 | #2 <= OK | |
6659 | #3 <= %Stopped T05 p1.1 | |
6660 | #4 => vStopped | |
6661 | #5 <= T05 p1.2 | |
6662 | #6 => vStopped | |
6663 | #7 <= OK | |
6664 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6665 | #9 => vCont s:p1.1;c | |
6666 | ||
6667 | The last vCont above would resume thread p1.2 by mistake, because | |
6668 | the server has no idea that the event for p1.2 had not been | |
6669 | handled yet. | |
6670 | ||
6671 | The server side must similarly ignore resume actions for the | |
6672 | thread that has a pending %Stopped notification (and any other | |
6673 | threads with events pending), until GDB acks the notification | |
6674 | with vStopped. Otherwise, e.g., the following case is | |
6675 | mishandled: | |
6676 | ||
6677 | #1 => g (or any other packet) | |
6678 | #2 <= [registers] | |
6679 | #3 <= %Stopped T05 p1.2 | |
6680 | #4 => vCont s:p1.1;c | |
6681 | #5 <= OK | |
6682 | ||
6683 | Above, the server must not resume thread p1.2. GDB can't know | |
6684 | that p1.2 stopped until it acks the %Stopped notification, and | |
6685 | since from GDB's perspective all threads should be running, it | |
6686 | sends a "c" action. | |
6687 | ||
6688 | Finally, special care must also be given to handling fork/vfork | |
6689 | events. A (v)fork event actually tells us that two processes | |
6690 | stopped -- the parent and the child. Until we follow the fork, | |
6691 | we must not resume the child. Therefore, if we have a pending | |
6692 | fork follow, we must not send a global wildcard resume action | |
6693 | (vCont;c). We can still send process-wide wildcards though. */ | |
6694 | ||
6695 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
2f63ec5c | 6696 | bool may_global_wildcard_vcont = true; |
85ad3aaf PA |
6697 | |
6698 | /* And assume every process is individually wildcard-able too. */ | |
5b6d1e4f | 6699 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6700 | { |
089354bb SM |
6701 | remote_inferior *priv = get_remote_inferior (inf); |
6702 | ||
6703 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6704 | } |
6705 | ||
6706 | /* Check for any pending events (not reported or processed yet) and | |
6707 | disable process and global wildcard resumes appropriately. */ | |
6708 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6709 | ||
1192f124 SM |
6710 | bool any_pending_vcont_resume = false; |
6711 | ||
5b6d1e4f | 6712 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6713 | { |
c9d22089 SM |
6714 | remote_thread_info *priv = get_remote_thread_info (tp); |
6715 | ||
85ad3aaf PA |
6716 | /* If a thread of a process is not meant to be resumed, then we |
6717 | can't wildcard that process. */ | |
a6c11cbb | 6718 | if (priv->get_resume_state () == resume_state::NOT_RESUMED) |
85ad3aaf | 6719 | { |
089354bb | 6720 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6721 | |
6722 | /* And if we can't wildcard a process, we can't wildcard | |
6723 | everything either. */ | |
2f63ec5c | 6724 | may_global_wildcard_vcont = false; |
85ad3aaf PA |
6725 | continue; |
6726 | } | |
6727 | ||
1192f124 SM |
6728 | if (priv->get_resume_state () == resume_state::RESUMED_PENDING_VCONT) |
6729 | any_pending_vcont_resume = true; | |
6730 | ||
85ad3aaf PA |
6731 | /* If a thread is the parent of an unfollowed fork, then we |
6732 | can't do a global wildcard, as that would resume the fork | |
6733 | child. */ | |
6734 | if (is_pending_fork_parent_thread (tp)) | |
2f63ec5c | 6735 | may_global_wildcard_vcont = false; |
85ad3aaf PA |
6736 | } |
6737 | ||
1192f124 SM |
6738 | /* We didn't have any resumed thread pending a vCont resume, so nothing to |
6739 | do. */ | |
6740 | if (!any_pending_vcont_resume) | |
6741 | return; | |
6742 | ||
85ad3aaf PA |
6743 | /* Now let's build the vCont packet(s). Actions must be appended |
6744 | from narrower to wider scopes (thread -> process -> global). If | |
6745 | we end up with too many actions for a single packet vcont_builder | |
6746 | flushes the current vCont packet to the remote side and starts a | |
6747 | new one. */ | |
6b8edb51 | 6748 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
6749 | |
6750 | /* Threads first. */ | |
5b6d1e4f | 6751 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6752 | { |
7aabaf9d | 6753 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf | 6754 | |
c9d22089 SM |
6755 | /* If the thread was previously vCont-resumed, no need to send a specific |
6756 | action for it. If we didn't receive a resume request for it, don't | |
6757 | send an action for it either. */ | |
a6c11cbb | 6758 | if (remote_thr->get_resume_state () != resume_state::RESUMED_PENDING_VCONT) |
85ad3aaf PA |
6759 | continue; |
6760 | ||
6761 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6762 | ||
1192f124 SM |
6763 | /* We should never be commit-resuming a thread that has a stop reply. |
6764 | Otherwise, we would end up reporting a stop event for a thread while | |
6765 | it is running on the remote target. */ | |
6766 | remote_state *rs = get_remote_state (); | |
6767 | for (const auto &stop_reply : rs->stop_reply_queue) | |
6768 | gdb_assert (stop_reply->ptid != tp->ptid); | |
6769 | ||
c9d22089 SM |
6770 | const resumed_pending_vcont_info &info |
6771 | = remote_thr->resumed_pending_vcont_info (); | |
85ad3aaf | 6772 | |
c9d22089 SM |
6773 | /* Check if we need to send a specific action for this thread. If not, |
6774 | it will be included in a wildcard resume instead. */ | |
6775 | if (info.step || info.sig != GDB_SIGNAL_0 | |
6776 | || !get_remote_inferior (tp->inf)->may_wildcard_vcont) | |
6777 | vcont_builder.push_action (tp->ptid, info.step, info.sig); | |
6778 | ||
6779 | remote_thr->set_resumed (); | |
85ad3aaf PA |
6780 | } |
6781 | ||
6782 | /* Now check whether we can send any process-wide wildcard. This is | |
6783 | to avoid sending a global wildcard in the case nothing is | |
6784 | supposed to be resumed. */ | |
2f63ec5c | 6785 | bool any_process_wildcard = false; |
85ad3aaf | 6786 | |
5b6d1e4f | 6787 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6788 | { |
089354bb | 6789 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6790 | { |
2f63ec5c | 6791 | any_process_wildcard = true; |
85ad3aaf PA |
6792 | break; |
6793 | } | |
6794 | } | |
6795 | ||
6796 | if (any_process_wildcard) | |
6797 | { | |
6798 | /* If all processes are wildcard-able, then send a single "c" | |
6799 | action, otherwise, send an "all (-1) threads of process" | |
6800 | continue action for each running process, if any. */ | |
6801 | if (may_global_wildcard_vcont) | |
6802 | { | |
f5db4863 PA |
6803 | vcont_builder.push_action (minus_one_ptid, |
6804 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6805 | } |
6806 | else | |
6807 | { | |
5b6d1e4f | 6808 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6809 | { |
089354bb | 6810 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6811 | { |
f2907e49 | 6812 | vcont_builder.push_action (ptid_t (inf->pid), |
f5db4863 | 6813 | false, GDB_SIGNAL_0); |
85ad3aaf PA |
6814 | } |
6815 | } | |
6816 | } | |
6817 | } | |
6818 | ||
f5db4863 | 6819 | vcont_builder.flush (); |
85ad3aaf PA |
6820 | } |
6821 | ||
b4b1a226 SM |
6822 | /* Implementation of target_has_pending_events. */ |
6823 | ||
6824 | bool | |
6825 | remote_target::has_pending_events () | |
6826 | { | |
6827 | if (target_can_async_p ()) | |
6828 | { | |
6829 | remote_state *rs = get_remote_state (); | |
6830 | ||
6831 | if (async_event_handler_marked (rs->remote_async_inferior_event_token)) | |
6832 | return true; | |
6833 | ||
6834 | /* Note that BUFCNT can be negative, indicating sticky | |
6835 | error. */ | |
6836 | if (rs->remote_desc->bufcnt != 0) | |
6837 | return true; | |
6838 | } | |
6839 | return false; | |
6840 | } | |
6841 | ||
c906108c | 6842 | \f |
43ff13b4 | 6843 | |
74531fed PA |
6844 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6845 | thread, all threads of a remote process, or all threads of all | |
6846 | processes. */ | |
6847 | ||
6b8edb51 PA |
6848 | void |
6849 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
6850 | { |
6851 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6852 | char *p = rs->buf.data (); |
6853 | char *endp = p + get_remote_packet_size (); | |
74531fed | 6854 | |
1192f124 SM |
6855 | /* If any thread that needs to stop was resumed but pending a vCont |
6856 | resume, generate a phony stop_reply. However, first check | |
6857 | whether the thread wasn't resumed with a signal. Generating a | |
6858 | phony stop in that case would result in losing the signal. */ | |
6859 | bool needs_commit = false; | |
6860 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
6861 | { | |
6862 | remote_thread_info *remote_thr = get_remote_thread_info (tp); | |
6863 | ||
6864 | if (remote_thr->get_resume_state () | |
6865 | == resume_state::RESUMED_PENDING_VCONT) | |
6866 | { | |
6867 | const resumed_pending_vcont_info &info | |
6868 | = remote_thr->resumed_pending_vcont_info (); | |
6869 | if (info.sig != GDB_SIGNAL_0) | |
6870 | { | |
6871 | /* This signal must be forwarded to the inferior. We | |
6872 | could commit-resume just this thread, but its simpler | |
6873 | to just commit-resume everything. */ | |
6874 | needs_commit = true; | |
6875 | break; | |
6876 | } | |
6877 | } | |
6878 | } | |
6879 | ||
6880 | if (needs_commit) | |
6881 | commit_resumed (); | |
6882 | else | |
6883 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
6884 | { | |
6885 | remote_thread_info *remote_thr = get_remote_thread_info (tp); | |
6886 | ||
6887 | if (remote_thr->get_resume_state () | |
6888 | == resume_state::RESUMED_PENDING_VCONT) | |
6889 | { | |
6890 | remote_debug_printf ("Enqueueing phony stop reply for thread pending " | |
6891 | "vCont-resume (%d, %ld, %ld)", tp->ptid.pid(), | |
6892 | tp->ptid.lwp (), tp->ptid.tid ()); | |
6893 | ||
6894 | /* Check that the thread wasn't resumed with a signal. | |
6895 | Generating a phony stop would result in losing the | |
6896 | signal. */ | |
6897 | const resumed_pending_vcont_info &info | |
6898 | = remote_thr->resumed_pending_vcont_info (); | |
6899 | gdb_assert (info.sig == GDB_SIGNAL_0); | |
6900 | ||
6901 | stop_reply *sr = new stop_reply (); | |
6902 | sr->ptid = tp->ptid; | |
6903 | sr->rs = rs; | |
6904 | sr->ws.kind = TARGET_WAITKIND_STOPPED; | |
6905 | sr->ws.value.sig = GDB_SIGNAL_0; | |
6906 | sr->arch = tp->inf->gdbarch; | |
6907 | sr->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6908 | sr->watch_data_address = 0; | |
6909 | sr->core = 0; | |
6910 | this->push_stop_reply (sr); | |
6911 | ||
6912 | /* Pretend that this thread was actually resumed on the | |
6913 | remote target, then stopped. If we leave it in the | |
6914 | RESUMED_PENDING_VCONT state and the commit_resumed | |
6915 | method is called while the stop reply is still in the | |
6916 | queue, we'll end up reporting a stop event to the core | |
6917 | for that thread while it is running on the remote | |
6918 | target... that would be bad. */ | |
6919 | remote_thr->set_resumed (); | |
6920 | } | |
6921 | } | |
6922 | ||
5b6d1e4f PA |
6923 | /* FIXME: This supports_vCont_probed check is a workaround until |
6924 | packet_support is per-connection. */ | |
6925 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN | |
6926 | || !rs->supports_vCont_probed) | |
6b8edb51 | 6927 | remote_vcont_probe (); |
74531fed | 6928 | |
d458bd84 | 6929 | if (!rs->supports_vCont.t) |
74531fed PA |
6930 | error (_("Remote server does not support stopping threads")); |
6931 | ||
d7e15655 | 6932 | if (ptid == minus_one_ptid |
0e998d96 | 6933 | || (!remote_multi_process_p (rs) && ptid.is_pid ())) |
74531fed PA |
6934 | p += xsnprintf (p, endp - p, "vCont;t"); |
6935 | else | |
6936 | { | |
6937 | ptid_t nptid; | |
6938 | ||
74531fed PA |
6939 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6940 | ||
0e998d96 | 6941 | if (ptid.is_pid ()) |
74531fed | 6942 | /* All (-1) threads of process. */ |
e99b03dc | 6943 | nptid = ptid_t (ptid.pid (), -1, 0); |
74531fed PA |
6944 | else |
6945 | { | |
6946 | /* Small optimization: if we already have a stop reply for | |
6947 | this thread, no use in telling the stub we want this | |
6948 | stopped. */ | |
6949 | if (peek_stop_reply (ptid)) | |
6950 | return; | |
6951 | ||
6952 | nptid = ptid; | |
6953 | } | |
6954 | ||
a9cbf802 | 6955 | write_ptid (p, endp, nptid); |
74531fed PA |
6956 | } |
6957 | ||
6958 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6959 | come in asynchronously by notification. */ | |
6960 | putpkt (rs->buf); | |
8d64371b TT |
6961 | getpkt (&rs->buf, 0); |
6962 | if (strcmp (rs->buf.data (), "OK") != 0) | |
a068643d | 6963 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid).c_str (), |
8d64371b | 6964 | rs->buf.data ()); |
74531fed PA |
6965 | } |
6966 | ||
bfedc46a PA |
6967 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6968 | interrupt the remote target. It is undefined which thread of which | |
6969 | process reports the interrupt. */ | |
74531fed | 6970 | |
6b8edb51 PA |
6971 | void |
6972 | remote_target::remote_interrupt_as () | |
74531fed PA |
6973 | { |
6974 | struct remote_state *rs = get_remote_state (); | |
6975 | ||
3a29589a DJ |
6976 | rs->ctrlc_pending_p = 1; |
6977 | ||
74531fed PA |
6978 | /* If the inferior is stopped already, but the core didn't know |
6979 | about it yet, just ignore the request. The cached wait status | |
6980 | will be collected in remote_wait. */ | |
6981 | if (rs->cached_wait_status) | |
6982 | return; | |
6983 | ||
9a7071a8 JB |
6984 | /* Send interrupt_sequence to remote target. */ |
6985 | send_interrupt_sequence (); | |
74531fed PA |
6986 | } |
6987 | ||
de979965 PA |
6988 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6989 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6990 | reports the interrupt. Throws an error if the packet is not |
6991 | supported by the server. */ | |
de979965 | 6992 | |
6b8edb51 PA |
6993 | void |
6994 | remote_target::remote_interrupt_ns () | |
de979965 PA |
6995 | { |
6996 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6997 | char *p = rs->buf.data (); |
6998 | char *endp = p + get_remote_packet_size (); | |
de979965 PA |
6999 | |
7000 | xsnprintf (p, endp - p, "vCtrlC"); | |
7001 | ||
7002 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
7003 | come in asynchronously by notification. */ | |
7004 | putpkt (rs->buf); | |
8d64371b | 7005 | getpkt (&rs->buf, 0); |
de979965 PA |
7006 | |
7007 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
7008 | { | |
7009 | case PACKET_OK: | |
7010 | break; | |
7011 | case PACKET_UNKNOWN: | |
e42de8c7 | 7012 | error (_("No support for interrupting the remote target.")); |
de979965 | 7013 | case PACKET_ERROR: |
8d64371b | 7014 | error (_("Interrupting target failed: %s"), rs->buf.data ()); |
de979965 | 7015 | } |
de979965 PA |
7016 | } |
7017 | ||
bfedc46a | 7018 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 7019 | |
f6ac5f3d PA |
7020 | void |
7021 | remote_target::stop (ptid_t ptid) | |
c906108c | 7022 | { |
2189c312 | 7023 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
c906108c | 7024 | |
6efcd9a8 | 7025 | if (target_is_non_stop_p ()) |
74531fed | 7026 | remote_stop_ns (ptid); |
c906108c | 7027 | else |
bfedc46a PA |
7028 | { |
7029 | /* We don't currently have a way to transparently pause the | |
7030 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 7031 | remote_interrupt_as (); |
bfedc46a PA |
7032 | } |
7033 | } | |
7034 | ||
7035 | /* Implement the to_interrupt function for the remote targets. */ | |
7036 | ||
f6ac5f3d PA |
7037 | void |
7038 | remote_target::interrupt () | |
bfedc46a | 7039 | { |
2189c312 | 7040 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
bfedc46a | 7041 | |
e42de8c7 PA |
7042 | if (target_is_non_stop_p ()) |
7043 | remote_interrupt_ns (); | |
bfedc46a | 7044 | else |
e42de8c7 | 7045 | remote_interrupt_as (); |
c906108c SS |
7046 | } |
7047 | ||
93692b58 PA |
7048 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
7049 | ||
f6ac5f3d PA |
7050 | void |
7051 | remote_target::pass_ctrlc () | |
93692b58 | 7052 | { |
2189c312 | 7053 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
93692b58 | 7054 | |
2189c312 | 7055 | struct remote_state *rs = get_remote_state (); |
93692b58 PA |
7056 | |
7057 | /* If we're starting up, we're not fully synced yet. Quit | |
7058 | immediately. */ | |
7059 | if (rs->starting_up) | |
7060 | quit (); | |
7061 | /* If ^C has already been sent once, offer to disconnect. */ | |
7062 | else if (rs->ctrlc_pending_p) | |
7063 | interrupt_query (); | |
7064 | else | |
e671cd59 | 7065 | target_interrupt (); |
93692b58 PA |
7066 | } |
7067 | ||
c906108c SS |
7068 | /* Ask the user what to do when an interrupt is received. */ |
7069 | ||
6b8edb51 PA |
7070 | void |
7071 | remote_target::interrupt_query () | |
c906108c | 7072 | { |
abc56d60 | 7073 | struct remote_state *rs = get_remote_state (); |
c906108c | 7074 | |
abc56d60 | 7075 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 7076 | { |
abc56d60 PA |
7077 | if (query (_("The target is not responding to interrupt requests.\n" |
7078 | "Stop debugging it? "))) | |
74531fed | 7079 | { |
5b6d1e4f | 7080 | remote_unpush_target (this); |
abc56d60 | 7081 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
7082 | } |
7083 | } | |
abc56d60 PA |
7084 | else |
7085 | { | |
7086 | if (query (_("Interrupted while waiting for the program.\n" | |
7087 | "Give up waiting? "))) | |
7088 | quit (); | |
7089 | } | |
c906108c SS |
7090 | } |
7091 | ||
6426a772 JM |
7092 | /* Enable/disable target terminal ownership. Most targets can use |
7093 | terminal groups to control terminal ownership. Remote targets are | |
7094 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 7095 | is required. */ |
6426a772 | 7096 | |
f6ac5f3d PA |
7097 | void |
7098 | remote_target::terminal_inferior () | |
6426a772 | 7099 | { |
6426a772 JM |
7100 | /* NOTE: At this point we could also register our selves as the |
7101 | recipient of all input. Any characters typed could then be | |
23860348 | 7102 | passed on down to the target. */ |
6426a772 JM |
7103 | } |
7104 | ||
f6ac5f3d PA |
7105 | void |
7106 | remote_target::terminal_ours () | |
6426a772 | 7107 | { |
6426a772 JM |
7108 | } |
7109 | ||
176a6961 | 7110 | static void |
05be00a8 | 7111 | remote_console_output (const char *msg) |
c906108c | 7112 | { |
05be00a8 | 7113 | const char *p; |
c906108c | 7114 | |
c5aa993b | 7115 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
7116 | { |
7117 | char tb[2]; | |
7118 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 7119 | |
c906108c SS |
7120 | tb[0] = c; |
7121 | tb[1] = 0; | |
da5bd37e | 7122 | gdb_stdtarg->puts (tb); |
c906108c | 7123 | } |
da5bd37e | 7124 | gdb_stdtarg->flush (); |
00db5b94 | 7125 | } |
74531fed | 7126 | |
221e1a37 PA |
7127 | /* Return the length of the stop reply queue. */ |
7128 | ||
6b8edb51 PA |
7129 | int |
7130 | remote_target::stop_reply_queue_length () | |
221e1a37 | 7131 | { |
6b8edb51 | 7132 | remote_state *rs = get_remote_state (); |
953edf2b | 7133 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
7134 | } |
7135 | ||
cb8c24b6 | 7136 | static void |
6b8edb51 | 7137 | remote_notif_stop_parse (remote_target *remote, |
bb277751 | 7138 | struct notif_client *self, const char *buf, |
722247f1 YQ |
7139 | struct notif_event *event) |
7140 | { | |
6b8edb51 | 7141 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
7142 | } |
7143 | ||
7144 | static void | |
6b8edb51 | 7145 | remote_notif_stop_ack (remote_target *remote, |
bb277751 | 7146 | struct notif_client *self, const char *buf, |
722247f1 YQ |
7147 | struct notif_event *event) |
7148 | { | |
7149 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
7150 | ||
7151 | /* acknowledge */ | |
6b8edb51 | 7152 | putpkt (remote, self->ack_command); |
722247f1 | 7153 | |
b0083dd7 PA |
7154 | /* Kind can be TARGET_WAITKIND_IGNORE if we have meanwhile discarded |
7155 | the notification. It was left in the queue because we need to | |
7156 | acknowledge it and pull the rest of the notifications out. */ | |
7157 | if (stop_reply->ws.kind != TARGET_WAITKIND_IGNORE) | |
7158 | remote->push_stop_reply (stop_reply); | |
722247f1 YQ |
7159 | } |
7160 | ||
7161 | static int | |
6b8edb51 PA |
7162 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
7163 | struct notif_client *self) | |
722247f1 YQ |
7164 | { |
7165 | /* We can't get pending events in remote_notif_process for | |
7166 | notification stop, and we have to do this in remote_wait_ns | |
7167 | instead. If we fetch all queued events from stub, remote stub | |
7168 | may exit and we have no chance to process them back in | |
7169 | remote_wait_ns. */ | |
6b8edb51 PA |
7170 | remote_state *rs = remote->get_remote_state (); |
7171 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
722247f1 YQ |
7172 | return 0; |
7173 | } | |
7174 | ||
32603266 | 7175 | stop_reply::~stop_reply () |
722247f1 | 7176 | { |
32603266 TT |
7177 | for (cached_reg_t ® : regcache) |
7178 | xfree (reg.data); | |
722247f1 YQ |
7179 | } |
7180 | ||
32603266 TT |
7181 | static notif_event_up |
7182 | remote_notif_stop_alloc_reply () | |
722247f1 | 7183 | { |
32603266 | 7184 | return notif_event_up (new struct stop_reply ()); |
722247f1 YQ |
7185 | } |
7186 | ||
7187 | /* A client of notification Stop. */ | |
7188 | ||
7189 | struct notif_client notif_client_stop = | |
7190 | { | |
7191 | "Stop", | |
7192 | "vStopped", | |
7193 | remote_notif_stop_parse, | |
7194 | remote_notif_stop_ack, | |
7195 | remote_notif_stop_can_get_pending_events, | |
7196 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 7197 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
7198 | }; |
7199 | ||
85ad3aaf | 7200 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
7201 | the pid of the process that owns the threads we want to check, or |
7202 | -1 if we want to check all threads. */ | |
7203 | ||
7204 | static int | |
7205 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
7206 | ptid_t thread_ptid) | |
7207 | { | |
7208 | if (ws->kind == TARGET_WAITKIND_FORKED | |
7209 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
7210 | { | |
e99b03dc | 7211 | if (event_pid == -1 || event_pid == thread_ptid.pid ()) |
cbb8991c DB |
7212 | return 1; |
7213 | } | |
7214 | ||
7215 | return 0; | |
7216 | } | |
7217 | ||
85ad3aaf PA |
7218 | /* Return the thread's pending status used to determine whether the |
7219 | thread is a fork parent stopped at a fork event. */ | |
7220 | ||
7221 | static struct target_waitstatus * | |
7222 | thread_pending_fork_status (struct thread_info *thread) | |
7223 | { | |
7224 | if (thread->suspend.waitstatus_pending_p) | |
7225 | return &thread->suspend.waitstatus; | |
7226 | else | |
7227 | return &thread->pending_follow; | |
7228 | } | |
7229 | ||
7230 | /* Determine if THREAD is a pending fork parent thread. */ | |
7231 | ||
7232 | static int | |
7233 | is_pending_fork_parent_thread (struct thread_info *thread) | |
7234 | { | |
7235 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
7236 | int pid = -1; | |
7237 | ||
7238 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
7239 | } | |
7240 | ||
cbb8991c DB |
7241 | /* If CONTEXT contains any fork child threads that have not been |
7242 | reported yet, remove them from the CONTEXT list. If such a | |
7243 | thread exists it is because we are stopped at a fork catchpoint | |
7244 | and have not yet called follow_fork, which will set up the | |
7245 | host-side data structures for the new process. */ | |
7246 | ||
6b8edb51 PA |
7247 | void |
7248 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c | 7249 | { |
cbb8991c DB |
7250 | int pid = -1; |
7251 | struct notif_client *notif = ¬if_client_stop; | |
cbb8991c DB |
7252 | |
7253 | /* For any threads stopped at a fork event, remove the corresponding | |
7254 | fork child threads from the CONTEXT list. */ | |
5b6d1e4f | 7255 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c | 7256 | { |
85ad3aaf | 7257 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
7258 | |
7259 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 7260 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
7261 | } |
7262 | ||
7263 | /* Check for any pending fork events (not reported or processed yet) | |
7264 | in process PID and remove those fork child threads from the | |
7265 | CONTEXT list as well. */ | |
7266 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7267 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7268 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
7269 | || event->ws.kind == TARGET_WAITKIND_VFORKED | |
7270 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
7271 | context->remove_thread (event->ws.value.related_pid); | |
85ad3aaf PA |
7272 | } |
7273 | ||
2f63ec5c AB |
7274 | /* Check whether any event pending in the vStopped queue would prevent a |
7275 | global or process wildcard vCont action. Set *may_global_wildcard to | |
7276 | false if we can't do a global wildcard (vCont;c), and clear the event | |
7277 | inferior's may_wildcard_vcont flag if we can't do a process-wide | |
7278 | wildcard resume (vCont;c:pPID.-1). */ | |
85ad3aaf | 7279 | |
6b8edb51 PA |
7280 | void |
7281 | remote_target::check_pending_events_prevent_wildcard_vcont | |
2f63ec5c | 7282 | (bool *may_global_wildcard) |
85ad3aaf PA |
7283 | { |
7284 | struct notif_client *notif = ¬if_client_stop; | |
7285 | ||
7286 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7287 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7288 | { | |
7289 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
7290 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
7291 | continue; | |
85ad3aaf | 7292 | |
953edf2b TT |
7293 | if (event->ws.kind == TARGET_WAITKIND_FORKED |
7294 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
2f63ec5c | 7295 | *may_global_wildcard = false; |
722247f1 | 7296 | |
953edf2b TT |
7297 | /* This may be the first time we heard about this process. |
7298 | Regardless, we must not do a global wildcard resume, otherwise | |
7299 | we'd resume this process too. */ | |
2f63ec5c | 7300 | *may_global_wildcard = false; |
323fd5b9 PA |
7301 | if (event->ptid != null_ptid) |
7302 | { | |
7303 | inferior *inf = find_inferior_ptid (this, event->ptid); | |
7304 | if (inf != NULL) | |
7305 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
7306 | } | |
722247f1 | 7307 | } |
722247f1 YQ |
7308 | } |
7309 | ||
f48ff2a7 | 7310 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7311 | |
6b8edb51 PA |
7312 | void |
7313 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7314 | { |
f48ff2a7 YQ |
7315 | struct stop_reply *reply; |
7316 | struct remote_state *rs = get_remote_state (); | |
7317 | struct remote_notif_state *rns = rs->notif_state; | |
7318 | ||
7319 | /* This function can be notified when an inferior exists. When the | |
7320 | target is not remote, the notification state is NULL. */ | |
7321 | if (rs->remote_desc == NULL) | |
7322 | return; | |
7323 | ||
7324 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7325 | |
74531fed | 7326 | /* Discard the in-flight notification. */ |
e99b03dc | 7327 | if (reply != NULL && reply->ptid.pid () == inf->pid) |
74531fed | 7328 | { |
b0083dd7 PA |
7329 | /* Leave the notification pending, since the server expects that |
7330 | we acknowledge it with vStopped. But clear its contents, so | |
7331 | that later on when we acknowledge it, we also discard it. */ | |
7332 | reply->ws.kind = TARGET_WAITKIND_IGNORE; | |
7333 | ||
7334 | if (remote_debug) | |
7335 | fprintf_unfiltered (gdb_stdlog, | |
7336 | "discarded in-flight notification\n"); | |
74531fed | 7337 | } |
c906108c | 7338 | |
74531fed PA |
7339 | /* Discard the stop replies we have already pulled with |
7340 | vStopped. */ | |
953edf2b TT |
7341 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7342 | rs->stop_reply_queue.end (), | |
7343 | [=] (const stop_reply_up &event) | |
7344 | { | |
7345 | return event->ptid.pid () == inf->pid; | |
7346 | }); | |
7347 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
bcc75809 YQ |
7348 | } |
7349 | ||
7350 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7351 | |
6b8edb51 PA |
7352 | void |
7353 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7354 | { |
6b8edb51 | 7355 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7356 | |
f48ff2a7 YQ |
7357 | /* Discard the stop replies we have already pulled with |
7358 | vStopped. */ | |
953edf2b TT |
7359 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7360 | rs->stop_reply_queue.end (), | |
7361 | [=] (const stop_reply_up &event) | |
7362 | { | |
7363 | return event->rs == rs; | |
7364 | }); | |
7365 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7366 | } |
43ff13b4 | 7367 | |
722247f1 YQ |
7368 | /* Remove the first reply in 'stop_reply_queue' which matches |
7369 | PTID. */ | |
2e9f7625 | 7370 | |
6b8edb51 PA |
7371 | struct stop_reply * |
7372 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7373 | { |
953edf2b | 7374 | remote_state *rs = get_remote_state (); |
722247f1 | 7375 | |
953edf2b TT |
7376 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7377 | rs->stop_reply_queue.end (), | |
7378 | [=] (const stop_reply_up &event) | |
7379 | { | |
7380 | return event->ptid.matches (ptid); | |
7381 | }); | |
7382 | struct stop_reply *result; | |
7383 | if (iter == rs->stop_reply_queue.end ()) | |
7384 | result = nullptr; | |
7385 | else | |
7386 | { | |
7387 | result = iter->release (); | |
7388 | rs->stop_reply_queue.erase (iter); | |
7389 | } | |
722247f1 | 7390 | |
722247f1 YQ |
7391 | if (notif_debug) |
7392 | fprintf_unfiltered (gdb_stdlog, | |
7393 | "notif: discard queued event: 'Stop' in %s\n", | |
a068643d | 7394 | target_pid_to_str (ptid).c_str ()); |
a744cf53 | 7395 | |
953edf2b | 7396 | return result; |
74531fed | 7397 | } |
75c99385 | 7398 | |
74531fed PA |
7399 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7400 | remove it from the queue, and return it. Returns NULL if none is | |
7401 | found. If there are still queued events left to process, tell the | |
7402 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7403 | |
6b8edb51 PA |
7404 | struct stop_reply * |
7405 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7406 | { |
953edf2b | 7407 | remote_state *rs = get_remote_state (); |
722247f1 | 7408 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7409 | |
953edf2b | 7410 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7411 | { |
6b8edb51 PA |
7412 | /* There's still at least an event left. */ |
7413 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
7414 | } | |
74531fed | 7415 | |
722247f1 | 7416 | return r; |
74531fed PA |
7417 | } |
7418 | ||
7419 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7420 | know that we now have at least one queued event left to pass to the | |
7421 | core side, tell the event loop to get back to target_wait soon. */ | |
7422 | ||
6b8edb51 PA |
7423 | void |
7424 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7425 | { |
6b8edb51 | 7426 | remote_state *rs = get_remote_state (); |
953edf2b | 7427 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7428 | |
722247f1 YQ |
7429 | if (notif_debug) |
7430 | fprintf_unfiltered (gdb_stdlog, | |
7431 | "notif: push 'Stop' %s to queue %d\n", | |
a068643d | 7432 | target_pid_to_str (new_event->ptid).c_str (), |
953edf2b | 7433 | int (rs->stop_reply_queue.size ())); |
74531fed | 7434 | |
6b8edb51 | 7435 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
74531fed PA |
7436 | } |
7437 | ||
7438 | /* Returns true if we have a stop reply for PTID. */ | |
7439 | ||
6b8edb51 PA |
7440 | int |
7441 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7442 | { |
6b8edb51 | 7443 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7444 | for (auto &event : rs->stop_reply_queue) |
7445 | if (ptid == event->ptid | |
7446 | && event->ws.kind == TARGET_WAITKIND_STOPPED) | |
7447 | return 1; | |
7448 | return 0; | |
74531fed PA |
7449 | } |
7450 | ||
26d56a93 SL |
7451 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7452 | starting with P and ending with PEND matches PREFIX. */ | |
7453 | ||
7454 | static int | |
7455 | strprefix (const char *p, const char *pend, const char *prefix) | |
7456 | { | |
7457 | for ( ; p < pend; p++, prefix++) | |
7458 | if (*p != *prefix) | |
7459 | return 0; | |
7460 | return *prefix == '\0'; | |
7461 | } | |
7462 | ||
74531fed PA |
7463 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7464 | result is stored in EVENT, or throws an error. */ | |
7465 | ||
6b8edb51 | 7466 | void |
bb277751 | 7467 | remote_target::remote_parse_stop_reply (const char *buf, stop_reply *event) |
74531fed | 7468 | { |
5cd63fda | 7469 | remote_arch_state *rsa = NULL; |
74531fed | 7470 | ULONGEST addr; |
256642e8 | 7471 | const char *p; |
94585166 | 7472 | int skipregs = 0; |
74531fed PA |
7473 | |
7474 | event->ptid = null_ptid; | |
bcc75809 | 7475 | event->rs = get_remote_state (); |
74531fed PA |
7476 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
7477 | event->ws.value.integer = 0; | |
f7e6eed5 | 7478 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
32603266 | 7479 | event->regcache.clear (); |
dc146f7c | 7480 | event->core = -1; |
74531fed PA |
7481 | |
7482 | switch (buf[0]) | |
7483 | { | |
7484 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7485 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7486 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7487 | ss = signal number | |
7488 | n... = register number | |
7489 | r... = register contents | |
7490 | */ | |
7491 | ||
7492 | p = &buf[3]; /* after Txx */ | |
7493 | while (*p) | |
7494 | { | |
256642e8 | 7495 | const char *p1; |
cea39f65 | 7496 | int fieldsize; |
43ff13b4 | 7497 | |
1f10ba14 PA |
7498 | p1 = strchr (p, ':'); |
7499 | if (p1 == NULL) | |
7500 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7501 | Packet: '%s'\n"), | |
7502 | p, buf); | |
7503 | if (p == p1) | |
7504 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7505 | Packet: '%s'\n"), | |
7506 | p, buf); | |
3c3bea1c | 7507 | |
1f10ba14 PA |
7508 | /* Some "registers" are actually extended stop information. |
7509 | Note if you're adding a new entry here: GDB 7.9 and | |
7510 | earlier assume that all register "numbers" that start | |
7511 | with an hex digit are real register numbers. Make sure | |
7512 | the server only sends such a packet if it knows the | |
7513 | client understands it. */ | |
c8e38a49 | 7514 | |
26d56a93 | 7515 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7516 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7517 | else if (strprefix (p, p1, "syscall_entry")) |
7518 | { | |
7519 | ULONGEST sysno; | |
7520 | ||
7521 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
7522 | p = unpack_varlen_hex (++p1, &sysno); | |
7523 | event->ws.value.syscall_number = (int) sysno; | |
7524 | } | |
7525 | else if (strprefix (p, p1, "syscall_return")) | |
7526 | { | |
7527 | ULONGEST sysno; | |
7528 | ||
7529 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
7530 | p = unpack_varlen_hex (++p1, &sysno); | |
7531 | event->ws.value.syscall_number = (int) sysno; | |
7532 | } | |
26d56a93 SL |
7533 | else if (strprefix (p, p1, "watch") |
7534 | || strprefix (p, p1, "rwatch") | |
7535 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7536 | { |
f7e6eed5 | 7537 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7538 | p = unpack_varlen_hex (++p1, &addr); |
7539 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7540 | } |
26d56a93 | 7541 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7542 | { |
7543 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7544 | ||
7545 | /* Make sure the stub doesn't forget to indicate support | |
7546 | with qSupported. */ | |
7547 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7548 | error (_("Unexpected swbreak stop reason")); | |
7549 | ||
7550 | /* The value part is documented as "must be empty", | |
7551 | though we ignore it, in case we ever decide to make | |
7552 | use of it in a backward compatible way. */ | |
8424cc97 | 7553 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7554 | } |
26d56a93 | 7555 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7556 | { |
7557 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7558 | ||
7559 | /* Make sure the stub doesn't forget to indicate support | |
7560 | with qSupported. */ | |
7561 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7562 | error (_("Unexpected hwbreak stop reason")); | |
7563 | ||
7564 | /* See above. */ | |
8424cc97 | 7565 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7566 | } |
26d56a93 | 7567 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7568 | { |
1f10ba14 | 7569 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 7570 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7571 | } |
26d56a93 | 7572 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
7573 | { |
7574 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
7575 | /* p1 will indicate "begin" or "end", but it makes | |
7576 | no difference for now, so ignore it. */ | |
8424cc97 | 7577 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7578 | } |
26d56a93 | 7579 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7580 | { |
7581 | ULONGEST c; | |
a744cf53 | 7582 | |
1f10ba14 PA |
7583 | p = unpack_varlen_hex (++p1, &c); |
7584 | event->core = c; | |
cea39f65 | 7585 | } |
26d56a93 | 7586 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
7587 | { |
7588 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7589 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
7590 | } | |
26d56a93 | 7591 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
7592 | { |
7593 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7594 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
7595 | } | |
26d56a93 | 7596 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
7597 | { |
7598 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 7599 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7600 | } |
6ab24463 | 7601 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7602 | { |
7603 | ULONGEST ignored; | |
94585166 DB |
7604 | int pathlen; |
7605 | ||
7606 | /* Determine the length of the execd pathname. */ | |
7607 | p = unpack_varlen_hex (++p1, &ignored); | |
7608 | pathlen = (p - p1) / 2; | |
7609 | ||
7610 | /* Save the pathname for event reporting and for | |
7611 | the next run command. */ | |
c6321f19 TT |
7612 | gdb::unique_xmalloc_ptr<char[]> pathname |
7613 | ((char *) xmalloc (pathlen + 1)); | |
7614 | hex2bin (p1, (gdb_byte *) pathname.get (), pathlen); | |
94585166 DB |
7615 | pathname[pathlen] = '\0'; |
7616 | ||
7617 | /* This is freed during event handling. */ | |
c6321f19 | 7618 | event->ws.value.execd_pathname = pathname.release (); |
94585166 DB |
7619 | event->ws.kind = TARGET_WAITKIND_EXECD; |
7620 | ||
7621 | /* Skip the registers included in this packet, since | |
7622 | they may be for an architecture different from the | |
7623 | one used by the original program. */ | |
7624 | skipregs = 1; | |
7625 | } | |
65706a29 PA |
7626 | else if (strprefix (p, p1, "create")) |
7627 | { | |
7628 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 7629 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7630 | } |
cea39f65 MS |
7631 | else |
7632 | { | |
1f10ba14 | 7633 | ULONGEST pnum; |
256642e8 | 7634 | const char *p_temp; |
1f10ba14 | 7635 | |
94585166 DB |
7636 | if (skipregs) |
7637 | { | |
8424cc97 | 7638 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7639 | p++; |
7640 | continue; | |
7641 | } | |
7642 | ||
1f10ba14 PA |
7643 | /* Maybe a real ``P'' register number. */ |
7644 | p_temp = unpack_varlen_hex (p, &pnum); | |
7645 | /* If the first invalid character is the colon, we got a | |
7646 | register number. Otherwise, it's an unknown stop | |
7647 | reason. */ | |
7648 | if (p_temp == p1) | |
7649 | { | |
5cd63fda PA |
7650 | /* If we haven't parsed the event's thread yet, find |
7651 | it now, in order to find the architecture of the | |
7652 | reported expedited registers. */ | |
7653 | if (event->ptid == null_ptid) | |
7654 | { | |
24ed6739 AB |
7655 | /* If there is no thread-id information then leave |
7656 | the event->ptid as null_ptid. Later in | |
7657 | process_stop_reply we will pick a suitable | |
7658 | thread. */ | |
5cd63fda PA |
7659 | const char *thr = strstr (p1 + 1, ";thread:"); |
7660 | if (thr != NULL) | |
7661 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7662 | NULL); | |
5cd63fda PA |
7663 | } |
7664 | ||
7665 | if (rsa == NULL) | |
7666 | { | |
5b6d1e4f PA |
7667 | inferior *inf |
7668 | = (event->ptid == null_ptid | |
7669 | ? NULL | |
7670 | : find_inferior_ptid (this, event->ptid)); | |
5cd63fda PA |
7671 | /* If this is the first time we learn anything |
7672 | about this process, skip the registers | |
7673 | included in this packet, since we don't yet | |
7674 | know which architecture to use to parse them. | |
7675 | We'll determine the architecture later when | |
7676 | we process the stop reply and retrieve the | |
7677 | target description, via | |
7678 | remote_notice_new_inferior -> | |
7679 | post_create_inferior. */ | |
7680 | if (inf == NULL) | |
7681 | { | |
7682 | p = strchrnul (p1 + 1, ';'); | |
7683 | p++; | |
7684 | continue; | |
7685 | } | |
7686 | ||
7687 | event->arch = inf->gdbarch; | |
9d6eea31 | 7688 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7689 | } |
7690 | ||
7691 | packet_reg *reg | |
7692 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7693 | cached_reg_t cached_reg; |
43ff13b4 | 7694 | |
1f10ba14 PA |
7695 | if (reg == NULL) |
7696 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7697 | Packet: '%s'\n"), |
1f10ba14 | 7698 | hex_string (pnum), p, buf); |
c8e38a49 | 7699 | |
1f10ba14 | 7700 | cached_reg.num = reg->regnum; |
d1dff226 | 7701 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7702 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7703 | |
1f10ba14 PA |
7704 | p = p1 + 1; |
7705 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7706 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7707 | p += 2 * fieldsize; |
5cd63fda | 7708 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7709 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7710 | |
32603266 | 7711 | event->regcache.push_back (cached_reg); |
1f10ba14 PA |
7712 | } |
7713 | else | |
7714 | { | |
7715 | /* Not a number. Silently skip unknown optional | |
7716 | info. */ | |
8424cc97 | 7717 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7718 | } |
cea39f65 | 7719 | } |
c8e38a49 | 7720 | |
cea39f65 MS |
7721 | if (*p != ';') |
7722 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7723 | buf, p); | |
7724 | ++p; | |
7725 | } | |
5b5596ff PA |
7726 | |
7727 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7728 | break; | |
7729 | ||
c8e38a49 PA |
7730 | /* fall through */ |
7731 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7732 | { |
7733 | int sig; | |
7734 | ||
7735 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7736 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7737 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7738 | event->ws.value.sig = (enum gdb_signal) sig; | |
7739 | else | |
7740 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7741 | } | |
c8e38a49 | 7742 | break; |
65706a29 PA |
7743 | case 'w': /* Thread exited. */ |
7744 | { | |
65706a29 PA |
7745 | ULONGEST value; |
7746 | ||
7747 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7748 | p = unpack_varlen_hex (&buf[1], &value); | |
7749 | event->ws.value.integer = value; | |
7750 | if (*p != ';') | |
7751 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7752 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7753 | break; |
7754 | } | |
c8e38a49 PA |
7755 | case 'W': /* Target exited. */ |
7756 | case 'X': | |
7757 | { | |
c8e38a49 | 7758 | ULONGEST value; |
82f73884 | 7759 | |
c8e38a49 PA |
7760 | /* GDB used to accept only 2 hex chars here. Stubs should |
7761 | only send more if they detect GDB supports multi-process | |
7762 | support. */ | |
7763 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7764 | |
c8e38a49 PA |
7765 | if (buf[0] == 'W') |
7766 | { | |
7767 | /* The remote process exited. */ | |
74531fed PA |
7768 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7769 | event->ws.value.integer = value; | |
c8e38a49 PA |
7770 | } |
7771 | else | |
7772 | { | |
7773 | /* The remote process exited with a signal. */ | |
74531fed | 7774 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7775 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7776 | event->ws.value.sig = (enum gdb_signal) value; | |
7777 | else | |
7778 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7779 | } |
82f73884 | 7780 | |
e7af6c70 TBA |
7781 | /* If no process is specified, return null_ptid, and let the |
7782 | caller figure out the right process to use. */ | |
7783 | int pid = 0; | |
c8e38a49 PA |
7784 | if (*p == '\0') |
7785 | ; | |
7786 | else if (*p == ';') | |
7787 | { | |
7788 | p++; | |
7789 | ||
0b24eb2d | 7790 | if (*p == '\0') |
82f73884 | 7791 | ; |
61012eef | 7792 | else if (startswith (p, "process:")) |
82f73884 | 7793 | { |
c8e38a49 | 7794 | ULONGEST upid; |
a744cf53 | 7795 | |
c8e38a49 PA |
7796 | p += sizeof ("process:") - 1; |
7797 | unpack_varlen_hex (p, &upid); | |
7798 | pid = upid; | |
82f73884 PA |
7799 | } |
7800 | else | |
7801 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7802 | } |
c8e38a49 PA |
7803 | else |
7804 | error (_("unknown stop reply packet: %s"), buf); | |
f2907e49 | 7805 | event->ptid = ptid_t (pid); |
74531fed PA |
7806 | } |
7807 | break; | |
f2faf941 PA |
7808 | case 'N': |
7809 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7810 | event->ptid = minus_one_ptid; | |
7811 | break; | |
74531fed | 7812 | } |
74531fed PA |
7813 | } |
7814 | ||
722247f1 YQ |
7815 | /* When the stub wants to tell GDB about a new notification reply, it |
7816 | sends a notification (%Stop, for example). Those can come it at | |
7817 | any time, hence, we have to make sure that any pending | |
7818 | putpkt/getpkt sequence we're making is finished, before querying | |
7819 | the stub for more events with the corresponding ack command | |
7820 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7821 | immediately upon receiving the notification, something like this | |
7822 | could happen: | |
74531fed PA |
7823 | |
7824 | 1.1) --> Hg 1 | |
7825 | 1.2) <-- OK | |
7826 | 1.3) --> g | |
7827 | 1.4) <-- %Stop | |
7828 | 1.5) --> vStopped | |
7829 | 1.6) <-- (registers reply to step #1.3) | |
7830 | ||
7831 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7832 | query. | |
7833 | ||
796cb314 | 7834 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7835 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7836 | doing whatever we were doing: | |
7837 | ||
7838 | 2.1) --> Hg 1 | |
7839 | 2.2) <-- OK | |
7840 | 2.3) --> g | |
7841 | 2.4) <-- %Stop | |
7842 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7843 | 2.5) <-- (registers reply to step #2.3) | |
7844 | ||
85102364 | 7845 | Eventually after step #2.5, we return to the event loop, which |
74531fed PA |
7846 | notices there's an event on the |
7847 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7848 | associated callback --- the function below. At this point, we're | |
7849 | always safe to start a vStopped sequence. : | |
7850 | ||
7851 | 2.6) --> vStopped | |
7852 | 2.7) <-- T05 thread:2 | |
7853 | 2.8) --> vStopped | |
7854 | 2.9) --> OK | |
7855 | */ | |
7856 | ||
722247f1 | 7857 | void |
6b8edb51 | 7858 | remote_target::remote_notif_get_pending_events (notif_client *nc) |
74531fed PA |
7859 | { |
7860 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7861 | |
f48ff2a7 | 7862 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7863 | { |
722247f1 YQ |
7864 | if (notif_debug) |
7865 | fprintf_unfiltered (gdb_stdlog, | |
7866 | "notif: process: '%s' ack pending event\n", | |
7867 | nc->name); | |
74531fed | 7868 | |
722247f1 | 7869 | /* acknowledge */ |
8d64371b TT |
7870 | nc->ack (this, nc, rs->buf.data (), |
7871 | rs->notif_state->pending_event[nc->id]); | |
f48ff2a7 | 7872 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
7873 | |
7874 | while (1) | |
7875 | { | |
8d64371b TT |
7876 | getpkt (&rs->buf, 0); |
7877 | if (strcmp (rs->buf.data (), "OK") == 0) | |
74531fed PA |
7878 | break; |
7879 | else | |
8d64371b | 7880 | remote_notif_ack (this, nc, rs->buf.data ()); |
74531fed PA |
7881 | } |
7882 | } | |
722247f1 YQ |
7883 | else |
7884 | { | |
7885 | if (notif_debug) | |
7886 | fprintf_unfiltered (gdb_stdlog, | |
7887 | "notif: process: '%s' no pending reply\n", | |
7888 | nc->name); | |
7889 | } | |
74531fed PA |
7890 | } |
7891 | ||
6b8edb51 PA |
7892 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
7893 | avoid having to export the whole remote_target class. */ | |
7894 | ||
7895 | void | |
7896 | remote_notif_get_pending_events (remote_target *remote, notif_client *nc) | |
7897 | { | |
7898 | remote->remote_notif_get_pending_events (nc); | |
7899 | } | |
7900 | ||
8f66807b AB |
7901 | /* Called from process_stop_reply when the stop packet we are responding |
7902 | to didn't include a process-id or thread-id. STATUS is the stop event | |
7903 | we are responding to. | |
7904 | ||
7905 | It is the task of this function to select a suitable thread (or process) | |
7906 | and return its ptid, this is the thread (or process) we will assume the | |
7907 | stop event came from. | |
7908 | ||
7909 | In some cases there isn't really any choice about which thread (or | |
7910 | process) is selected, a basic remote with a single process containing a | |
7911 | single thread might choose not to send any process-id or thread-id in | |
7912 | its stop packets, this function will select and return the one and only | |
7913 | thread. | |
7914 | ||
7915 | However, if a target supports multiple threads (or processes) and still | |
7916 | doesn't include a thread-id (or process-id) in its stop packet then | |
7917 | first, this is a badly behaving target, and second, we're going to have | |
7918 | to select a thread (or process) at random and use that. This function | |
7919 | will print a warning to the user if it detects that there is the | |
7920 | possibility that GDB is guessing which thread (or process) to | |
7921 | report. | |
7922 | ||
7923 | Note that this is called before GDB fetches the updated thread list from the | |
7924 | target. So it's possible for the stop reply to be ambiguous and for GDB to | |
7925 | not realize it. For example, if there's initially one thread, the target | |
7926 | spawns a second thread, and then sends a stop reply without an id that | |
7927 | concerns the first thread. GDB will assume the stop reply is about the | |
7928 | first thread - the only thread it knows about - without printing a warning. | |
7929 | Anyway, if the remote meant for the stop reply to be about the second thread, | |
7930 | then it would be really broken, because GDB doesn't know about that thread | |
7931 | yet. */ | |
74531fed | 7932 | |
6b8edb51 | 7933 | ptid_t |
8f66807b AB |
7934 | remote_target::select_thread_for_ambiguous_stop_reply |
7935 | (const struct target_waitstatus *status) | |
74531fed | 7936 | { |
4351271e AB |
7937 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
7938 | ||
8f66807b AB |
7939 | /* Some stop events apply to all threads in an inferior, while others |
7940 | only apply to a single thread. */ | |
7941 | bool process_wide_stop | |
7942 | = (status->kind == TARGET_WAITKIND_EXITED | |
7943 | || status->kind == TARGET_WAITKIND_SIGNALLED); | |
74531fed | 7944 | |
4351271e AB |
7945 | remote_debug_printf ("process_wide_stop = %d", process_wide_stop); |
7946 | ||
8f66807b AB |
7947 | thread_info *first_resumed_thread = nullptr; |
7948 | bool ambiguous = false; | |
74531fed | 7949 | |
8f66807b AB |
7950 | /* Consider all non-exited threads of the target, find the first resumed |
7951 | one. */ | |
7952 | for (thread_info *thr : all_non_exited_threads (this)) | |
24ed6739 | 7953 | { |
8f66807b | 7954 | remote_thread_info *remote_thr = get_remote_thread_info (thr); |
cada5fc9 | 7955 | |
a6c11cbb | 7956 | if (remote_thr->get_resume_state () != resume_state::RESUMED) |
8f66807b | 7957 | continue; |
24ed6739 | 7958 | |
8f66807b AB |
7959 | if (first_resumed_thread == nullptr) |
7960 | first_resumed_thread = thr; | |
7961 | else if (!process_wide_stop | |
7962 | || first_resumed_thread->ptid.pid () != thr->ptid.pid ()) | |
7963 | ambiguous = true; | |
7964 | } | |
7965 | ||
4351271e AB |
7966 | remote_debug_printf ("first resumed thread is %s", |
7967 | pid_to_str (first_resumed_thread->ptid).c_str ()); | |
7968 | remote_debug_printf ("is this guess ambiguous? = %d", ambiguous); | |
7969 | ||
8f66807b | 7970 | gdb_assert (first_resumed_thread != nullptr); |
cada5fc9 | 7971 | |
8f66807b AB |
7972 | /* Warn if the remote target is sending ambiguous stop replies. */ |
7973 | if (ambiguous) | |
7974 | { | |
7975 | static bool warned = false; | |
7976 | ||
7977 | if (!warned) | |
7978 | { | |
7979 | /* If you are seeing this warning then the remote target has | |
7980 | stopped without specifying a thread-id, but the target | |
7981 | does have multiple threads (or inferiors), and so GDB is | |
7982 | having to guess which thread stopped. | |
7983 | ||
7984 | Examples of what might cause this are the target sending | |
7985 | and 'S' stop packet, or a 'T' stop packet and not | |
7986 | including a thread-id. | |
7987 | ||
7988 | Additionally, the target might send a 'W' or 'X packet | |
7989 | without including a process-id, when the target has | |
7990 | multiple running inferiors. */ | |
7991 | if (process_wide_stop) | |
7992 | warning (_("multi-inferior target stopped without " | |
7993 | "sending a process-id, using first " | |
7994 | "non-exited inferior")); | |
cada5fc9 | 7995 | else |
8f66807b AB |
7996 | warning (_("multi-threaded target stopped without " |
7997 | "sending a thread-id, using first " | |
7998 | "non-exited thread")); | |
7999 | warned = true; | |
24ed6739 | 8000 | } |
24ed6739 | 8001 | } |
74531fed | 8002 | |
8f66807b AB |
8003 | /* If this is a stop for all threads then don't use a particular threads |
8004 | ptid, instead create a new ptid where only the pid field is set. */ | |
8005 | if (process_wide_stop) | |
8006 | return ptid_t (first_resumed_thread->ptid.pid ()); | |
8007 | else | |
8008 | return first_resumed_thread->ptid; | |
8009 | } | |
8010 | ||
8011 | /* Called when it is decided that STOP_REPLY holds the info of the | |
8012 | event that is to be returned to the core. This function always | |
8013 | destroys STOP_REPLY. */ | |
8014 | ||
8015 | ptid_t | |
8016 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
8017 | struct target_waitstatus *status) | |
8018 | { | |
8019 | *status = stop_reply->ws; | |
8020 | ptid_t ptid = stop_reply->ptid; | |
8021 | ||
8022 | /* If no thread/process was reported by the stub then select a suitable | |
8023 | thread/process. */ | |
8024 | if (ptid == null_ptid) | |
8025 | ptid = select_thread_for_ambiguous_stop_reply (status); | |
8026 | gdb_assert (ptid != null_ptid); | |
8027 | ||
5f3563ea | 8028 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
8029 | && status->kind != TARGET_WAITKIND_SIGNALLED |
8030 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 8031 | { |
5f3563ea | 8032 | /* Expedited registers. */ |
32603266 | 8033 | if (!stop_reply->regcache.empty ()) |
5f3563ea | 8034 | { |
217f1f79 | 8035 | struct regcache *regcache |
5b6d1e4f | 8036 | = get_thread_arch_regcache (this, ptid, stop_reply->arch); |
5f3563ea | 8037 | |
32603266 TT |
8038 | for (cached_reg_t ® : stop_reply->regcache) |
8039 | { | |
8040 | regcache->raw_supply (reg.num, reg.data); | |
8041 | xfree (reg.data); | |
8042 | } | |
d1dff226 | 8043 | |
32603266 | 8044 | stop_reply->regcache.clear (); |
5f3563ea | 8045 | } |
74531fed | 8046 | |
8a82de58 | 8047 | remote_notice_new_inferior (ptid, false); |
5b6d1e4f | 8048 | remote_thread_info *remote_thr = get_remote_thread_info (this, ptid); |
799a2abe PA |
8049 | remote_thr->core = stop_reply->core; |
8050 | remote_thr->stop_reason = stop_reply->stop_reason; | |
8051 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
c9d22089 SM |
8052 | |
8053 | if (target_is_non_stop_p ()) | |
8054 | { | |
8055 | /* If the target works in non-stop mode, a stop-reply indicates that | |
8056 | only this thread stopped. */ | |
8057 | remote_thr->set_not_resumed (); | |
8058 | } | |
8059 | else | |
8060 | { | |
8061 | /* If the target works in all-stop mode, a stop-reply indicates that | |
8062 | all the target's threads stopped. */ | |
8063 | for (thread_info *tp : all_non_exited_threads (this)) | |
8064 | get_remote_thread_info (tp)->set_not_resumed (); | |
8065 | } | |
74531fed PA |
8066 | } |
8067 | ||
32603266 | 8068 | delete stop_reply; |
74531fed PA |
8069 | return ptid; |
8070 | } | |
8071 | ||
8072 | /* The non-stop mode version of target_wait. */ | |
8073 | ||
6b8edb51 | 8074 | ptid_t |
b60cea74 TT |
8075 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, |
8076 | target_wait_flags options) | |
74531fed PA |
8077 | { |
8078 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
8079 | struct stop_reply *stop_reply; |
8080 | int ret; | |
fee9eda9 | 8081 | int is_notif = 0; |
74531fed PA |
8082 | |
8083 | /* If in non-stop mode, get out of getpkt even if a | |
8084 | notification is received. */ | |
8085 | ||
8d64371b | 8086 | ret = getpkt_or_notif_sane (&rs->buf, 0 /* forever */, &is_notif); |
74531fed PA |
8087 | while (1) |
8088 | { | |
fee9eda9 | 8089 | if (ret != -1 && !is_notif) |
74531fed PA |
8090 | switch (rs->buf[0]) |
8091 | { | |
8092 | case 'E': /* Error of some sort. */ | |
8093 | /* We're out of sync with the target now. Did it continue | |
8094 | or not? We can't tell which thread it was in non-stop, | |
8095 | so just ignore this. */ | |
8d64371b | 8096 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
74531fed PA |
8097 | break; |
8098 | case 'O': /* Console output. */ | |
8d64371b | 8099 | remote_console_output (&rs->buf[1]); |
74531fed PA |
8100 | break; |
8101 | default: | |
8d64371b | 8102 | warning (_("Invalid remote reply: %s"), rs->buf.data ()); |
74531fed PA |
8103 | break; |
8104 | } | |
8105 | ||
8106 | /* Acknowledge a pending stop reply that may have arrived in the | |
8107 | mean time. */ | |
f48ff2a7 | 8108 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 8109 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
8110 | |
8111 | /* If indeed we noticed a stop reply, we're done. */ | |
8112 | stop_reply = queued_stop_reply (ptid); | |
8113 | if (stop_reply != NULL) | |
8114 | return process_stop_reply (stop_reply, status); | |
8115 | ||
47608cb1 | 8116 | /* Still no event. If we're just polling for an event, then |
74531fed | 8117 | return to the event loop. */ |
47608cb1 | 8118 | if (options & TARGET_WNOHANG) |
74531fed PA |
8119 | { |
8120 | status->kind = TARGET_WAITKIND_IGNORE; | |
8121 | return minus_one_ptid; | |
8122 | } | |
8123 | ||
47608cb1 | 8124 | /* Otherwise do a blocking wait. */ |
8d64371b | 8125 | ret = getpkt_or_notif_sane (&rs->buf, 1 /* forever */, &is_notif); |
74531fed PA |
8126 | } |
8127 | } | |
8128 | ||
31ba933e PA |
8129 | /* Return the first resumed thread. */ |
8130 | ||
8131 | static ptid_t | |
5b6d1e4f | 8132 | first_remote_resumed_thread (remote_target *target) |
31ba933e | 8133 | { |
5b6d1e4f | 8134 | for (thread_info *tp : all_non_exited_threads (target, minus_one_ptid)) |
31ba933e PA |
8135 | if (tp->resumed) |
8136 | return tp->ptid; | |
8137 | return null_ptid; | |
8138 | } | |
8139 | ||
74531fed PA |
8140 | /* Wait until the remote machine stops, then return, storing status in |
8141 | STATUS just as `wait' would. */ | |
8142 | ||
6b8edb51 | 8143 | ptid_t |
b60cea74 TT |
8144 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, |
8145 | target_wait_flags options) | |
74531fed PA |
8146 | { |
8147 | struct remote_state *rs = get_remote_state (); | |
74531fed | 8148 | ptid_t event_ptid = null_ptid; |
cea39f65 | 8149 | char *buf; |
74531fed PA |
8150 | struct stop_reply *stop_reply; |
8151 | ||
47608cb1 PA |
8152 | again: |
8153 | ||
74531fed PA |
8154 | status->kind = TARGET_WAITKIND_IGNORE; |
8155 | status->value.integer = 0; | |
8156 | ||
8157 | stop_reply = queued_stop_reply (ptid); | |
8158 | if (stop_reply != NULL) | |
8159 | return process_stop_reply (stop_reply, status); | |
8160 | ||
8161 | if (rs->cached_wait_status) | |
8162 | /* Use the cached wait status, but only once. */ | |
8163 | rs->cached_wait_status = 0; | |
8164 | else | |
8165 | { | |
8166 | int ret; | |
722247f1 | 8167 | int is_notif; |
567420d1 | 8168 | int forever = ((options & TARGET_WNOHANG) == 0 |
6b8edb51 | 8169 | && rs->wait_forever_enabled_p); |
567420d1 PA |
8170 | |
8171 | if (!rs->waiting_for_stop_reply) | |
8172 | { | |
8173 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
8174 | return minus_one_ptid; | |
8175 | } | |
74531fed | 8176 | |
74531fed PA |
8177 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
8178 | _never_ wait for ever -> test on target_is_async_p(). | |
8179 | However, before we do that we need to ensure that the caller | |
8180 | knows how to take the target into/out of async mode. */ | |
8d64371b | 8181 | ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif); |
722247f1 YQ |
8182 | |
8183 | /* GDB gets a notification. Return to core as this event is | |
8184 | not interesting. */ | |
8185 | if (ret != -1 && is_notif) | |
8186 | return minus_one_ptid; | |
567420d1 PA |
8187 | |
8188 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
8189 | return minus_one_ptid; | |
74531fed PA |
8190 | } |
8191 | ||
8d64371b | 8192 | buf = rs->buf.data (); |
74531fed | 8193 | |
3a29589a DJ |
8194 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
8195 | an 'F' or 'O' packet. */ | |
8196 | if (buf[0] != 'F' && buf[0] != 'O') | |
8197 | rs->ctrlc_pending_p = 0; | |
8198 | ||
74531fed PA |
8199 | switch (buf[0]) |
8200 | { | |
8201 | case 'E': /* Error of some sort. */ | |
8202 | /* We're out of sync with the target now. Did it continue or | |
8203 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
8204 | rs->waiting_for_stop_reply = 0; |
8205 | ||
74531fed PA |
8206 | warning (_("Remote failure reply: %s"), buf); |
8207 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 8208 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
8209 | break; |
8210 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
8211 | /* GDB may access the inferior memory while handling the File-I/O |
8212 | request, but we don't want GDB accessing memory while waiting | |
8213 | for a stop reply. See the comments in putpkt_binary. Set | |
8214 | waiting_for_stop_reply to 0 temporarily. */ | |
8215 | rs->waiting_for_stop_reply = 0; | |
6b8edb51 | 8216 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); |
3a29589a | 8217 | rs->ctrlc_pending_p = 0; |
e42e5352 YQ |
8218 | /* GDB handled the File-I/O request, and the target is running |
8219 | again. Keep waiting for events. */ | |
8220 | rs->waiting_for_stop_reply = 1; | |
74531fed | 8221 | break; |
f2faf941 | 8222 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 8223 | { |
29090fb6 LM |
8224 | /* There is a stop reply to handle. */ |
8225 | rs->waiting_for_stop_reply = 0; | |
8226 | ||
8227 | stop_reply | |
6b8edb51 PA |
8228 | = (struct stop_reply *) remote_notif_parse (this, |
8229 | ¬if_client_stop, | |
8d64371b | 8230 | rs->buf.data ()); |
74531fed | 8231 | |
74531fed | 8232 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
8233 | break; |
8234 | } | |
8235 | case 'O': /* Console output. */ | |
8236 | remote_console_output (buf + 1); | |
c8e38a49 PA |
8237 | break; |
8238 | case '\0': | |
b73be471 | 8239 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
8240 | { |
8241 | /* Zero length reply means that we tried 'S' or 'C' and the | |
8242 | remote system doesn't support it. */ | |
223ffa71 | 8243 | target_terminal::ours_for_output (); |
c8e38a49 PA |
8244 | printf_filtered |
8245 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
8246 | gdb_signal_to_name (rs->last_sent_signal)); |
8247 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 8248 | target_terminal::inferior (); |
c8e38a49 | 8249 | |
f5c4fcd9 TT |
8250 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
8251 | putpkt (buf); | |
c8e38a49 | 8252 | break; |
43ff13b4 | 8253 | } |
86a73007 | 8254 | /* fallthrough */ |
c8e38a49 PA |
8255 | default: |
8256 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 8257 | break; |
43ff13b4 | 8258 | } |
c8e38a49 | 8259 | |
f2faf941 PA |
8260 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
8261 | return minus_one_ptid; | |
8262 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
8263 | { |
8264 | /* Nothing interesting happened. If we're doing a non-blocking | |
8265 | poll, we're done. Otherwise, go back to waiting. */ | |
8266 | if (options & TARGET_WNOHANG) | |
8267 | return minus_one_ptid; | |
8268 | else | |
8269 | goto again; | |
8270 | } | |
74531fed PA |
8271 | else if (status->kind != TARGET_WAITKIND_EXITED |
8272 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 | 8273 | { |
d7e15655 | 8274 | if (event_ptid != null_ptid) |
47f8a51d | 8275 | record_currthread (rs, event_ptid); |
82f73884 | 8276 | else |
5b6d1e4f | 8277 | event_ptid = first_remote_resumed_thread (this); |
43ff13b4 | 8278 | } |
74531fed | 8279 | else |
e7af6c70 TBA |
8280 | { |
8281 | /* A process exit. Invalidate our notion of current thread. */ | |
8282 | record_currthread (rs, minus_one_ptid); | |
8283 | /* It's possible that the packet did not include a pid. */ | |
8284 | if (event_ptid == null_ptid) | |
5b6d1e4f | 8285 | event_ptid = first_remote_resumed_thread (this); |
e7af6c70 TBA |
8286 | /* EVENT_PTID could still be NULL_PTID. Double-check. */ |
8287 | if (event_ptid == null_ptid) | |
8288 | event_ptid = magic_null_ptid; | |
8289 | } | |
79d7f229 | 8290 | |
82f73884 | 8291 | return event_ptid; |
43ff13b4 JM |
8292 | } |
8293 | ||
74531fed PA |
8294 | /* Wait until the remote machine stops, then return, storing status in |
8295 | STATUS just as `wait' would. */ | |
8296 | ||
f6ac5f3d | 8297 | ptid_t |
b60cea74 TT |
8298 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, |
8299 | target_wait_flags options) | |
c8e38a49 | 8300 | { |
2189c312 SM |
8301 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
8302 | ||
baa8575b SM |
8303 | remote_state *rs = get_remote_state (); |
8304 | ||
8305 | /* Start by clearing the flag that asks for our wait method to be called, | |
8306 | we'll mark it again at the end if needed. */ | |
8307 | if (target_is_async_p ()) | |
8308 | clear_async_event_handler (rs->remote_async_inferior_event_token); | |
8309 | ||
c8e38a49 PA |
8310 | ptid_t event_ptid; |
8311 | ||
6efcd9a8 | 8312 | if (target_is_non_stop_p ()) |
6b8edb51 | 8313 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 8314 | else |
6b8edb51 | 8315 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 8316 | |
d9d41e78 | 8317 | if (target_is_async_p ()) |
c8e38a49 | 8318 | { |
baa8575b SM |
8319 | /* If there are events left in the queue, or unacknowledged |
8320 | notifications, then tell the event loop to call us again. */ | |
8321 | if (!rs->stop_reply_queue.empty () | |
8322 | || rs->notif_state->pending_event[notif_client_stop.id] != nullptr) | |
6b8edb51 | 8323 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
c8e38a49 | 8324 | } |
c8e38a49 PA |
8325 | |
8326 | return event_ptid; | |
8327 | } | |
8328 | ||
74ca34ce | 8329 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 8330 | |
6b8edb51 PA |
8331 | int |
8332 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
8333 | packet_reg *reg) | |
b96ec7ac | 8334 | { |
ac7936df | 8335 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 8336 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8337 | char *buf, *p; |
9890e433 | 8338 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
8339 | int i; |
8340 | ||
4082afcc | 8341 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
8342 | return 0; |
8343 | ||
8344 | if (reg->pnum == -1) | |
8345 | return 0; | |
8346 | ||
8d64371b | 8347 | p = rs->buf.data (); |
fcad0fa4 | 8348 | *p++ = 'p'; |
74ca34ce | 8349 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 8350 | *p++ = '\0'; |
1f4437a4 | 8351 | putpkt (rs->buf); |
8d64371b | 8352 | getpkt (&rs->buf, 0); |
3f9a994c | 8353 | |
8d64371b | 8354 | buf = rs->buf.data (); |
2e9f7625 | 8355 | |
8d64371b | 8356 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_p])) |
74ca34ce DJ |
8357 | { |
8358 | case PACKET_OK: | |
8359 | break; | |
8360 | case PACKET_UNKNOWN: | |
8361 | return 0; | |
8362 | case PACKET_ERROR: | |
27a9c0bf | 8363 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 8364 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
8365 | reg->regnum), |
8366 | buf); | |
74ca34ce | 8367 | } |
3f9a994c JB |
8368 | |
8369 | /* If this register is unfetchable, tell the regcache. */ | |
8370 | if (buf[0] == 'x') | |
8480adf2 | 8371 | { |
73e1c03f | 8372 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 8373 | return 1; |
b96ec7ac | 8374 | } |
b96ec7ac | 8375 | |
3f9a994c JB |
8376 | /* Otherwise, parse and supply the value. */ |
8377 | p = buf; | |
8378 | i = 0; | |
8379 | while (p[0] != 0) | |
8380 | { | |
8381 | if (p[1] == 0) | |
74ca34ce | 8382 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
8383 | |
8384 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8385 | p += 2; | |
8386 | } | |
73e1c03f | 8387 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 8388 | return 1; |
b96ec7ac AC |
8389 | } |
8390 | ||
74ca34ce DJ |
8391 | /* Fetch the registers included in the target's 'g' packet. */ |
8392 | ||
6b8edb51 PA |
8393 | int |
8394 | remote_target::send_g_packet () | |
c906108c | 8395 | { |
d01949b6 | 8396 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 8397 | int buf_len; |
c906108c | 8398 | |
8d64371b | 8399 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "g"); |
b75abf5b | 8400 | putpkt (rs->buf); |
8d64371b | 8401 | getpkt (&rs->buf, 0); |
b75abf5b AK |
8402 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
8403 | error (_("Could not read registers; remote failure reply '%s'"), | |
dda83cd7 | 8404 | rs->buf.data ()); |
c906108c | 8405 | |
29709017 DJ |
8406 | /* We can get out of synch in various cases. If the first character |
8407 | in the buffer is not a hex character, assume that has happened | |
8408 | and try to fetch another packet to read. */ | |
8409 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
8410 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
8411 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
8412 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
8413 | { | |
2189c312 | 8414 | remote_debug_printf ("Bad register packet; fetching a new packet"); |
8d64371b | 8415 | getpkt (&rs->buf, 0); |
29709017 DJ |
8416 | } |
8417 | ||
8d64371b | 8418 | buf_len = strlen (rs->buf.data ()); |
74ca34ce DJ |
8419 | |
8420 | /* Sanity check the received packet. */ | |
8421 | if (buf_len % 2 != 0) | |
8d64371b | 8422 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf.data ()); |
29709017 DJ |
8423 | |
8424 | return buf_len / 2; | |
8425 | } | |
8426 | ||
6b8edb51 PA |
8427 | void |
8428 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 8429 | { |
ac7936df | 8430 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 8431 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8432 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
8433 | int i, buf_len; |
8434 | char *p; | |
8435 | char *regs; | |
8436 | ||
8d64371b | 8437 | buf_len = strlen (rs->buf.data ()); |
29709017 DJ |
8438 | |
8439 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 8440 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 | 8441 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8d64371b TT |
8442 | "bytes): %s"), |
8443 | rsa->sizeof_g_packet, buf_len / 2, | |
8444 | rs->buf.data ()); | |
74ca34ce DJ |
8445 | |
8446 | /* Save the size of the packet sent to us by the target. It is used | |
8447 | as a heuristic when determining the max size of packets that the | |
8448 | target can safely receive. */ | |
8449 | if (rsa->actual_register_packet_size == 0) | |
8450 | rsa->actual_register_packet_size = buf_len; | |
8451 | ||
8452 | /* If this is smaller than we guessed the 'g' packet would be, | |
8453 | update our records. A 'g' reply that doesn't include a register's | |
8454 | value implies either that the register is not available, or that | |
8455 | the 'p' packet must be used. */ | |
8456 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8457 | { |
9dc193c3 | 8458 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8459 | |
4a22f64d | 8460 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8461 | { |
9dc193c3 LF |
8462 | long offset = rsa->regs[i].offset; |
8463 | long reg_size = register_size (gdbarch, i); | |
8464 | ||
74ca34ce DJ |
8465 | if (rsa->regs[i].pnum == -1) |
8466 | continue; | |
8467 | ||
9dc193c3 | 8468 | if (offset >= sizeof_g_packet) |
74ca34ce | 8469 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8470 | else if (offset + reg_size > sizeof_g_packet) |
8471 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8472 | else |
74ca34ce | 8473 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8474 | } |
9dc193c3 LF |
8475 | |
8476 | /* Looks valid enough, we can assume this is the correct length | |
dda83cd7 SM |
8477 | for a 'g' packet. It's important not to adjust |
8478 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8479 | this "if" won't be run the next time the method is called | |
8480 | with a packet of the same size and one of the internal errors | |
8481 | below will trigger instead. */ | |
9dc193c3 | 8482 | rsa->sizeof_g_packet = sizeof_g_packet; |
74ca34ce | 8483 | } |
b323314b | 8484 | |
224c3ddb | 8485 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8486 | |
8487 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8488 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8489 | |
c906108c SS |
8490 | /* Reply describes registers byte by byte, each byte encoded as two |
8491 | hex characters. Suck them all up, then supply them to the | |
8492 | register cacheing/storage mechanism. */ | |
8493 | ||
8d64371b | 8494 | p = rs->buf.data (); |
ea9c271d | 8495 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8496 | { |
74ca34ce DJ |
8497 | if (p[0] == 0 || p[1] == 0) |
8498 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
8499 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8500 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 8501 | |
c906108c | 8502 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8503 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8504 | else |
8505 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8506 | p += 2; | |
8507 | } | |
8508 | ||
a744cf53 MS |
8509 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8510 | { | |
8511 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8512 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8513 | |
8514 | if (r->in_g_packet) | |
8515 | { | |
8d64371b | 8516 | if ((r->offset + reg_size) * 2 > strlen (rs->buf.data ())) |
a744cf53 MS |
8517 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
8518 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8519 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8520 | else if (rs->buf[r->offset * 2] == 'x') |
8521 | { | |
8d64371b | 8522 | gdb_assert (r->offset * 2 < strlen (rs->buf.data ())); |
a744cf53 MS |
8523 | /* The register isn't available, mark it as such (at |
8524 | the same time setting the value to zero). */ | |
73e1c03f | 8525 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8526 | } |
8527 | else | |
73e1c03f | 8528 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8529 | } |
8530 | } | |
c906108c SS |
8531 | } |
8532 | ||
6b8edb51 PA |
8533 | void |
8534 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8535 | { |
8536 | send_g_packet (); | |
56be3814 | 8537 | process_g_packet (regcache); |
29709017 DJ |
8538 | } |
8539 | ||
e6e4e701 PA |
8540 | /* Make the remote selected traceframe match GDB's selected |
8541 | traceframe. */ | |
8542 | ||
6b8edb51 PA |
8543 | void |
8544 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8545 | { |
8546 | int newnum; | |
262e1174 | 8547 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8548 | |
262e1174 | 8549 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8550 | return; |
8551 | ||
8552 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8553 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8554 | |
8555 | newnum = target_trace_find (tfind_number, | |
8556 | get_traceframe_number (), 0, 0, NULL); | |
8557 | ||
8558 | /* Should not happen. If it does, all bets are off. */ | |
8559 | if (newnum != get_traceframe_number ()) | |
8560 | warning (_("could not set remote traceframe")); | |
8561 | } | |
8562 | ||
f6ac5f3d PA |
8563 | void |
8564 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8565 | { |
ac7936df | 8566 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8567 | struct remote_state *rs = get_remote_state (); |
8568 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8569 | int i; |
8570 | ||
e6e4e701 | 8571 | set_remote_traceframe (); |
222312d3 | 8572 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8573 | |
8574 | if (regnum >= 0) | |
8575 | { | |
5cd63fda | 8576 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8577 | |
74ca34ce DJ |
8578 | gdb_assert (reg != NULL); |
8579 | ||
8580 | /* If this register might be in the 'g' packet, try that first - | |
8581 | we are likely to read more than one register. If this is the | |
8582 | first 'g' packet, we might be overly optimistic about its | |
8583 | contents, so fall back to 'p'. */ | |
8584 | if (reg->in_g_packet) | |
8585 | { | |
56be3814 | 8586 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8587 | if (reg->in_g_packet) |
8588 | return; | |
8589 | } | |
8590 | ||
56be3814 | 8591 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8592 | return; |
8593 | ||
8594 | /* This register is not available. */ | |
73e1c03f | 8595 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8596 | |
8597 | return; | |
8598 | } | |
8599 | ||
56be3814 | 8600 | fetch_registers_using_g (regcache); |
74ca34ce | 8601 | |
5cd63fda | 8602 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8603 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8604 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8605 | { |
8606 | /* This register is not available. */ | |
73e1c03f | 8607 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8608 | } |
8609 | } | |
8610 | ||
c906108c SS |
8611 | /* Prepare to store registers. Since we may send them all (using a |
8612 | 'G' request), we have to read out the ones we don't want to change | |
8613 | first. */ | |
8614 | ||
f6ac5f3d PA |
8615 | void |
8616 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8617 | { |
9d6eea31 PA |
8618 | struct remote_state *rs = get_remote_state (); |
8619 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8620 | int i; |
cf0e1e0d | 8621 | |
c906108c | 8622 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8623 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8624 | { |
8625 | case PACKET_DISABLE: | |
8626 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8627 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8628 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8629 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8630 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8631 | break; |
8632 | case PACKET_ENABLE: | |
8633 | break; | |
8634 | } | |
8635 | } | |
8636 | ||
ad10f812 | 8637 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8638 | packet was not recognized. */ |
5a2468f5 | 8639 | |
6b8edb51 PA |
8640 | int |
8641 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8642 | packet_reg *reg) | |
5a2468f5 | 8643 | { |
ac7936df | 8644 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8645 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8646 | /* Try storing a single register. */ |
8d64371b | 8647 | char *buf = rs->buf.data (); |
9890e433 | 8648 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8649 | char *p; |
5a2468f5 | 8650 | |
4082afcc | 8651 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8652 | return 0; |
8653 | ||
8654 | if (reg->pnum == -1) | |
8655 | return 0; | |
8656 | ||
ea9c271d | 8657 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8658 | p = buf + strlen (buf); |
34a79281 | 8659 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8660 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 | 8661 | putpkt (rs->buf); |
8d64371b | 8662 | getpkt (&rs->buf, 0); |
5a2468f5 | 8663 | |
74ca34ce DJ |
8664 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8665 | { | |
8666 | case PACKET_OK: | |
8667 | return 1; | |
8668 | case PACKET_ERROR: | |
27a9c0bf | 8669 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8d64371b | 8670 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf.data ()); |
74ca34ce DJ |
8671 | case PACKET_UNKNOWN: |
8672 | return 0; | |
8673 | default: | |
8674 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8675 | } | |
c906108c SS |
8676 | } |
8677 | ||
23860348 MS |
8678 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8679 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8680 | |
6b8edb51 PA |
8681 | void |
8682 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8683 | { |
d01949b6 | 8684 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8685 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8686 | gdb_byte *regs; |
c906108c SS |
8687 | char *p; |
8688 | ||
193cb69f AC |
8689 | /* Extract all the registers in the regcache copying them into a |
8690 | local buffer. */ | |
8691 | { | |
b323314b | 8692 | int i; |
a744cf53 | 8693 | |
224c3ddb | 8694 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8695 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8696 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8697 | { |
ea9c271d | 8698 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8699 | |
b323314b | 8700 | if (r->in_g_packet) |
34a79281 | 8701 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8702 | } |
8703 | } | |
c906108c SS |
8704 | |
8705 | /* Command describes registers byte by byte, | |
8706 | each byte encoded as two hex characters. */ | |
8d64371b | 8707 | p = rs->buf.data (); |
193cb69f | 8708 | *p++ = 'G'; |
74ca34ce | 8709 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 | 8710 | putpkt (rs->buf); |
8d64371b | 8711 | getpkt (&rs->buf, 0); |
1f4437a4 | 8712 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
27a9c0bf | 8713 | error (_("Could not write registers; remote failure reply '%s'"), |
8d64371b | 8714 | rs->buf.data ()); |
c906108c | 8715 | } |
74ca34ce DJ |
8716 | |
8717 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8718 | of the register cache buffer. FIXME: ignores errors. */ | |
8719 | ||
f6ac5f3d PA |
8720 | void |
8721 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8722 | { |
5cd63fda | 8723 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8724 | struct remote_state *rs = get_remote_state (); |
8725 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8726 | int i; |
8727 | ||
e6e4e701 | 8728 | set_remote_traceframe (); |
222312d3 | 8729 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8730 | |
8731 | if (regnum >= 0) | |
8732 | { | |
5cd63fda | 8733 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8734 | |
74ca34ce DJ |
8735 | gdb_assert (reg != NULL); |
8736 | ||
8737 | /* Always prefer to store registers using the 'P' packet if | |
8738 | possible; we often change only a small number of registers. | |
8739 | Sometimes we change a larger number; we'd need help from a | |
8740 | higher layer to know to use 'G'. */ | |
56be3814 | 8741 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8742 | return; |
8743 | ||
8744 | /* For now, don't complain if we have no way to write the | |
8745 | register. GDB loses track of unavailable registers too | |
8746 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8747 | any way to read the register, either... */ |
74ca34ce DJ |
8748 | if (!reg->in_g_packet) |
8749 | return; | |
8750 | ||
56be3814 | 8751 | store_registers_using_G (regcache); |
74ca34ce DJ |
8752 | return; |
8753 | } | |
8754 | ||
56be3814 | 8755 | store_registers_using_G (regcache); |
74ca34ce | 8756 | |
5cd63fda | 8757 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8758 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8759 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8760 | /* See above for why we do not issue an error here. */ |
8761 | continue; | |
8762 | } | |
c906108c SS |
8763 | \f |
8764 | ||
8765 | /* Return the number of hex digits in num. */ | |
8766 | ||
8767 | static int | |
fba45db2 | 8768 | hexnumlen (ULONGEST num) |
c906108c SS |
8769 | { |
8770 | int i; | |
8771 | ||
8772 | for (i = 0; num != 0; i++) | |
8773 | num >>= 4; | |
8774 | ||
325fac50 | 8775 | return std::max (i, 1); |
c906108c SS |
8776 | } |
8777 | ||
2df3850c | 8778 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8779 | |
8780 | static int | |
fba45db2 | 8781 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8782 | { |
c906108c | 8783 | int len = hexnumlen (num); |
a744cf53 | 8784 | |
2df3850c JM |
8785 | return hexnumnstr (buf, num, len); |
8786 | } | |
8787 | ||
c906108c | 8788 | |
2df3850c | 8789 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8790 | |
2df3850c | 8791 | static int |
fba45db2 | 8792 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8793 | { |
8794 | int i; | |
8795 | ||
8796 | buf[width] = '\0'; | |
8797 | ||
8798 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8799 | { |
c5aa993b | 8800 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8801 | num >>= 4; |
8802 | } | |
8803 | ||
2df3850c | 8804 | return width; |
c906108c SS |
8805 | } |
8806 | ||
23860348 | 8807 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8808 | |
8809 | static CORE_ADDR | |
fba45db2 | 8810 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8811 | { |
883b9c6c | 8812 | unsigned int address_size = remote_address_size; |
a744cf53 | 8813 | |
911c95a5 UW |
8814 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8815 | if (!address_size) | |
f5656ead | 8816 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8817 | |
8818 | if (address_size > 0 | |
8819 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8820 | { |
8821 | /* Only create a mask when that mask can safely be constructed | |
dda83cd7 | 8822 | in a ULONGEST variable. */ |
c906108c | 8823 | ULONGEST mask = 1; |
a744cf53 | 8824 | |
911c95a5 | 8825 | mask = (mask << address_size) - 1; |
c906108c SS |
8826 | addr &= mask; |
8827 | } | |
8828 | return addr; | |
8829 | } | |
8830 | ||
8831 | /* Determine whether the remote target supports binary downloading. | |
8832 | This is accomplished by sending a no-op memory write of zero length | |
8833 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8834 | the whole packet, since many stubs strip the eighth bit and |
8835 | subsequently compute a wrong checksum, which causes real havoc with | |
8836 | remote_write_bytes. | |
7a292a7a | 8837 | |
96baa820 | 8838 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8839 | clean. In cases like this, the user should clear "remote |
23860348 | 8840 | X-packet". */ |
96baa820 | 8841 | |
6b8edb51 PA |
8842 | void |
8843 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 8844 | { |
d01949b6 | 8845 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8846 | |
4082afcc | 8847 | switch (packet_support (PACKET_X)) |
c906108c | 8848 | { |
96baa820 JM |
8849 | case PACKET_DISABLE: |
8850 | break; | |
8851 | case PACKET_ENABLE: | |
8852 | break; | |
8853 | case PACKET_SUPPORT_UNKNOWN: | |
8854 | { | |
96baa820 | 8855 | char *p; |
802188a7 | 8856 | |
8d64371b | 8857 | p = rs->buf.data (); |
96baa820 JM |
8858 | *p++ = 'X'; |
8859 | p += hexnumstr (p, (ULONGEST) addr); | |
8860 | *p++ = ','; | |
8861 | p += hexnumstr (p, (ULONGEST) 0); | |
8862 | *p++ = ':'; | |
8863 | *p = '\0'; | |
802188a7 | 8864 | |
8d64371b TT |
8865 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8866 | getpkt (&rs->buf, 0); | |
c906108c | 8867 | |
2e9f7625 | 8868 | if (rs->buf[0] == '\0') |
96baa820 | 8869 | { |
2189c312 | 8870 | remote_debug_printf ("binary downloading NOT supported by target"); |
444abaca | 8871 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8872 | } |
8873 | else | |
8874 | { | |
2189c312 | 8875 | remote_debug_printf ("binary downloading supported by target"); |
444abaca | 8876 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8877 | } |
8878 | break; | |
8879 | } | |
c906108c SS |
8880 | } |
8881 | } | |
8882 | ||
124e13d9 SM |
8883 | /* Helper function to resize the payload in order to try to get a good |
8884 | alignment. We try to write an amount of data such that the next write will | |
8885 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8886 | ||
8887 | static int | |
8888 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8889 | { | |
8890 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8891 | } | |
8892 | ||
c906108c SS |
8893 | /* Write memory data directly to the remote machine. |
8894 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8895 | HEADER is the starting part of the packet. |
c906108c SS |
8896 | MEMADDR is the address in the remote memory space. |
8897 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8898 | LEN_UNITS is the number of addressable units to write. |
8899 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8900 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8901 | should send data as binary ('X'), or hex-encoded ('M'). | |
8902 | ||
8903 | The function creates packet of the form | |
8904 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8905 | ||
124e13d9 | 8906 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8907 | |
8908 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8909 | are omitted. | |
8910 | ||
9b409511 | 8911 | Return the transferred status, error or OK (an |
124e13d9 SM |
8912 | 'enum target_xfer_status' value). Save the number of addressable units |
8913 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8914 | ||
8915 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8916 | exchange between gdb and the stub could look like (?? in place of the | |
8917 | checksum): | |
8918 | ||
8919 | -> $m1000,4#?? | |
8920 | <- aaaabbbbccccdddd | |
8921 | ||
8922 | -> $M1000,3:eeeeffffeeee#?? | |
8923 | <- OK | |
8924 | ||
8925 | -> $m1000,4#?? | |
8926 | <- eeeeffffeeeedddd */ | |
c906108c | 8927 | |
6b8edb51 PA |
8928 | target_xfer_status |
8929 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
8930 | const gdb_byte *myaddr, | |
8931 | ULONGEST len_units, | |
8932 | int unit_size, | |
8933 | ULONGEST *xfered_len_units, | |
8934 | char packet_format, int use_length) | |
c906108c | 8935 | { |
6d820c5c | 8936 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8937 | char *p; |
a76d924d DJ |
8938 | char *plen = NULL; |
8939 | int plenlen = 0; | |
124e13d9 SM |
8940 | int todo_units; |
8941 | int units_written; | |
8942 | int payload_capacity_bytes; | |
8943 | int payload_length_bytes; | |
a76d924d DJ |
8944 | |
8945 | if (packet_format != 'X' && packet_format != 'M') | |
8946 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8947 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8948 | |
124e13d9 | 8949 | if (len_units == 0) |
9b409511 | 8950 | return TARGET_XFER_EOF; |
b2182ed2 | 8951 | |
124e13d9 | 8952 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8953 | |
6d820c5c DJ |
8954 | /* The packet buffer will be large enough for the payload; |
8955 | get_memory_packet_size ensures this. */ | |
a76d924d | 8956 | rs->buf[0] = '\0'; |
c906108c | 8957 | |
a257b5bb | 8958 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8959 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8960 | ||
124e13d9 | 8961 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8962 | if (!use_length) |
0df8b418 | 8963 | /* The comma won't be used. */ |
124e13d9 SM |
8964 | payload_capacity_bytes += 1; |
8965 | payload_capacity_bytes -= strlen (header); | |
8966 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8967 | |
a76d924d | 8968 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8969 | |
8d64371b TT |
8970 | strcat (rs->buf.data (), header); |
8971 | p = rs->buf.data () + strlen (header); | |
a76d924d DJ |
8972 | |
8973 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8974 | if (packet_format == 'X') | |
c906108c | 8975 | { |
23860348 | 8976 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8977 | todo_units = std::min (len_units, |
8978 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8979 | if (use_length) |
124e13d9 | 8980 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8981 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8982 | } |
8983 | else | |
8984 | { | |
124e13d9 | 8985 | /* Number of bytes that will fit. */ |
325fac50 PA |
8986 | todo_units |
8987 | = std::min (len_units, | |
8988 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8989 | if (use_length) |
124e13d9 | 8990 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8991 | todo_units = std::min (todo_units, |
8992 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8993 | } |
a76d924d | 8994 | |
124e13d9 | 8995 | if (todo_units <= 0) |
3de11b2e | 8996 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8997 | _("minimum packet size too small to write data")); |
802188a7 | 8998 | |
6765f3e5 DJ |
8999 | /* If we already need another packet, then try to align the end |
9000 | of this packet to a useful boundary. */ | |
124e13d9 SM |
9001 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
9002 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 9003 | |
a257b5bb | 9004 | /* Append "<memaddr>". */ |
917317f4 JM |
9005 | memaddr = remote_address_masked (memaddr); |
9006 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 9007 | |
a76d924d DJ |
9008 | if (use_length) |
9009 | { | |
9010 | /* Append ",". */ | |
9011 | *p++ = ','; | |
802188a7 | 9012 | |
124e13d9 | 9013 | /* Append the length and retain its location and size. It may need to be |
dda83cd7 | 9014 | adjusted once the packet body has been created. */ |
a76d924d | 9015 | plen = p; |
124e13d9 | 9016 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
9017 | p += plenlen; |
9018 | } | |
a257b5bb AC |
9019 | |
9020 | /* Append ":". */ | |
917317f4 JM |
9021 | *p++ = ':'; |
9022 | *p = '\0'; | |
802188a7 | 9023 | |
a257b5bb | 9024 | /* Append the packet body. */ |
a76d924d | 9025 | if (packet_format == 'X') |
917317f4 | 9026 | { |
917317f4 JM |
9027 | /* Binary mode. Send target system values byte by byte, in |
9028 | increasing byte addresses. Only escape certain critical | |
9029 | characters. */ | |
124e13d9 SM |
9030 | payload_length_bytes = |
9031 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
9032 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 9033 | |
124e13d9 | 9034 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
9035 | a second try to keep the end of the packet aligned. Don't do |
9036 | this if the packet is tiny. */ | |
124e13d9 | 9037 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 9038 | { |
124e13d9 SM |
9039 | int new_todo_units; |
9040 | ||
9041 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
9042 | ||
9043 | if (new_todo_units != units_written) | |
9044 | payload_length_bytes = | |
9045 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
9046 | (gdb_byte *) p, &units_written, | |
9047 | payload_capacity_bytes); | |
6765f3e5 DJ |
9048 | } |
9049 | ||
124e13d9 SM |
9050 | p += payload_length_bytes; |
9051 | if (use_length && units_written < todo_units) | |
c906108c | 9052 | { |
802188a7 | 9053 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 9054 | and we have actually sent fewer units than planned. |
917317f4 JM |
9055 | Fix-up the length field of the packet. Use the same |
9056 | number of characters as before. */ | |
124e13d9 SM |
9057 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
9058 | plenlen); | |
917317f4 | 9059 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 9060 | } |
a76d924d DJ |
9061 | } |
9062 | else | |
9063 | { | |
917317f4 JM |
9064 | /* Normal mode: Send target system values byte by byte, in |
9065 | increasing byte addresses. Each byte is encoded as a two hex | |
9066 | value. */ | |
124e13d9 SM |
9067 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
9068 | units_written = todo_units; | |
c906108c | 9069 | } |
802188a7 | 9070 | |
8d64371b TT |
9071 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
9072 | getpkt (&rs->buf, 0); | |
802188a7 | 9073 | |
2e9f7625 | 9074 | if (rs->buf[0] == 'E') |
00d84524 | 9075 | return TARGET_XFER_E_IO; |
802188a7 | 9076 | |
124e13d9 SM |
9077 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
9078 | send fewer units than we'd planned. */ | |
9079 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 9080 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
9081 | } |
9082 | ||
a76d924d DJ |
9083 | /* Write memory data directly to the remote machine. |
9084 | This does not inform the data cache; the data cache uses this. | |
9085 | MEMADDR is the address in the remote memory space. | |
9086 | MYADDR is the address of the buffer in our space. | |
9087 | LEN is the number of bytes. | |
9088 | ||
9b409511 YQ |
9089 | Return the transferred status, error or OK (an |
9090 | 'enum target_xfer_status' value). Save the number of bytes | |
9091 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 9092 | |
6b8edb51 PA |
9093 | target_xfer_status |
9094 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
9095 | ULONGEST len, int unit_size, | |
9096 | ULONGEST *xfered_len) | |
a76d924d | 9097 | { |
a121b7c1 | 9098 | const char *packet_format = NULL; |
a76d924d DJ |
9099 | |
9100 | /* Check whether the target supports binary download. */ | |
9101 | check_binary_download (memaddr); | |
9102 | ||
4082afcc | 9103 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
9104 | { |
9105 | case PACKET_ENABLE: | |
9106 | packet_format = "X"; | |
9107 | break; | |
9108 | case PACKET_DISABLE: | |
9109 | packet_format = "M"; | |
9110 | break; | |
9111 | case PACKET_SUPPORT_UNKNOWN: | |
9112 | internal_error (__FILE__, __LINE__, | |
9113 | _("remote_write_bytes: bad internal state")); | |
9114 | default: | |
9115 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
9116 | } | |
9117 | ||
9118 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 9119 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 9120 | packet_format[0], 1); |
a76d924d DJ |
9121 | } |
9122 | ||
9217e74e YQ |
9123 | /* Read memory data directly from the remote machine. |
9124 | This does not use the data cache; the data cache uses this. | |
9125 | MEMADDR is the address in the remote memory space. | |
9126 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
9127 | LEN_UNITS is the number of addressable memory units to read.. |
9128 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
9129 | |
9130 | Return the transferred status, error or OK (an | |
9131 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
9132 | transferred in *XFERED_LEN_UNITS. |
9133 | ||
9134 | See the comment of remote_write_bytes_aux for an example of | |
9135 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 9136 | |
6b8edb51 PA |
9137 | target_xfer_status |
9138 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
9139 | ULONGEST len_units, | |
9140 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
9141 | { |
9142 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 9143 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 9144 | char *p; |
124e13d9 SM |
9145 | int todo_units; |
9146 | int decoded_bytes; | |
9217e74e | 9147 | |
124e13d9 | 9148 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
9149 | /* The packet buffer will be large enough for the payload; |
9150 | get_memory_packet_size ensures this. */ | |
9151 | ||
124e13d9 | 9152 | /* Number of units that will fit. */ |
325fac50 PA |
9153 | todo_units = std::min (len_units, |
9154 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
9155 | |
9156 | /* Construct "m"<memaddr>","<len>". */ | |
9157 | memaddr = remote_address_masked (memaddr); | |
8d64371b | 9158 | p = rs->buf.data (); |
9217e74e YQ |
9159 | *p++ = 'm'; |
9160 | p += hexnumstr (p, (ULONGEST) memaddr); | |
9161 | *p++ = ','; | |
124e13d9 | 9162 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
9163 | *p = '\0'; |
9164 | putpkt (rs->buf); | |
8d64371b | 9165 | getpkt (&rs->buf, 0); |
9217e74e YQ |
9166 | if (rs->buf[0] == 'E' |
9167 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
9168 | && rs->buf[3] == '\0') | |
9169 | return TARGET_XFER_E_IO; | |
9170 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
9171 | characters. */ | |
8d64371b | 9172 | p = rs->buf.data (); |
124e13d9 | 9173 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 9174 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 9175 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 9176 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
9177 | } |
9178 | ||
b55fbac4 YQ |
9179 | /* Using the set of read-only target sections of remote, read live |
9180 | read-only memory. | |
8acf9577 YQ |
9181 | |
9182 | For interface/parameters/return description see target.h, | |
9183 | to_xfer_partial. */ | |
9184 | ||
6b8edb51 PA |
9185 | target_xfer_status |
9186 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
9187 | ULONGEST memaddr, | |
9188 | ULONGEST len, | |
9189 | int unit_size, | |
9190 | ULONGEST *xfered_len) | |
8acf9577 | 9191 | { |
19cf757a | 9192 | const struct target_section *secp; |
8acf9577 | 9193 | |
6b8edb51 | 9194 | secp = target_section_by_addr (this, memaddr); |
8acf9577 | 9195 | if (secp != NULL |
fd361982 | 9196 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
8acf9577 | 9197 | { |
8acf9577 YQ |
9198 | ULONGEST memend = memaddr + len; |
9199 | ||
19cf757a AB |
9200 | const target_section_table *table = target_get_section_table (this); |
9201 | for (const target_section &p : *table) | |
8acf9577 | 9202 | { |
bb2a6777 | 9203 | if (memaddr >= p.addr) |
8acf9577 | 9204 | { |
bb2a6777 | 9205 | if (memend <= p.endaddr) |
8acf9577 YQ |
9206 | { |
9207 | /* Entire transfer is within this section. */ | |
124e13d9 | 9208 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9209 | xfered_len); |
8acf9577 | 9210 | } |
bb2a6777 | 9211 | else if (memaddr >= p.endaddr) |
8acf9577 YQ |
9212 | { |
9213 | /* This section ends before the transfer starts. */ | |
9214 | continue; | |
9215 | } | |
9216 | else | |
9217 | { | |
9218 | /* This section overlaps the transfer. Just do half. */ | |
bb2a6777 | 9219 | len = p.endaddr - memaddr; |
124e13d9 | 9220 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9221 | xfered_len); |
8acf9577 YQ |
9222 | } |
9223 | } | |
9224 | } | |
9225 | } | |
9226 | ||
9227 | return TARGET_XFER_EOF; | |
9228 | } | |
9229 | ||
9217e74e YQ |
9230 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
9231 | first if the requested memory is unavailable in traceframe. | |
9232 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 9233 | |
6b8edb51 PA |
9234 | target_xfer_status |
9235 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
9236 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
9237 | ULONGEST *xfered_len) | |
c906108c | 9238 | { |
6b6aa828 | 9239 | if (len == 0) |
96c4f946 | 9240 | return TARGET_XFER_EOF; |
b2182ed2 | 9241 | |
8acf9577 YQ |
9242 | if (get_traceframe_number () != -1) |
9243 | { | |
a79b1bc6 | 9244 | std::vector<mem_range> available; |
8acf9577 YQ |
9245 | |
9246 | /* If we fail to get the set of available memory, then the | |
9247 | target does not support querying traceframe info, and so we | |
9248 | attempt reading from the traceframe anyway (assuming the | |
9249 | target implements the old QTro packet then). */ | |
9250 | if (traceframe_available_memory (&available, memaddr, len)) | |
9251 | { | |
a79b1bc6 | 9252 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
9253 | { |
9254 | enum target_xfer_status res; | |
9255 | ||
9256 | /* Don't read into the traceframe's available | |
9257 | memory. */ | |
a79b1bc6 | 9258 | if (!available.empty ()) |
8acf9577 YQ |
9259 | { |
9260 | LONGEST oldlen = len; | |
9261 | ||
a79b1bc6 | 9262 | len = available[0].start - memaddr; |
8acf9577 YQ |
9263 | gdb_assert (len <= oldlen); |
9264 | } | |
9265 | ||
8acf9577 | 9266 | /* This goes through the topmost target again. */ |
6b8edb51 | 9267 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 9268 | len, unit_size, xfered_len); |
8acf9577 YQ |
9269 | if (res == TARGET_XFER_OK) |
9270 | return TARGET_XFER_OK; | |
9271 | else | |
9272 | { | |
9273 | /* No use trying further, we know some memory starting | |
9274 | at MEMADDR isn't available. */ | |
9275 | *xfered_len = len; | |
92ffd475 PC |
9276 | return (*xfered_len != 0) ? |
9277 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
9278 | } |
9279 | } | |
9280 | ||
9281 | /* Don't try to read more than how much is available, in | |
9282 | case the target implements the deprecated QTro packet to | |
9283 | cater for older GDBs (the target's knowledge of read-only | |
9284 | sections may be outdated by now). */ | |
a79b1bc6 | 9285 | len = available[0].length; |
8acf9577 YQ |
9286 | } |
9287 | } | |
9288 | ||
124e13d9 | 9289 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 9290 | } |
74531fed | 9291 | |
c906108c | 9292 | \f |
c906108c | 9293 | |
a76d924d DJ |
9294 | /* Sends a packet with content determined by the printf format string |
9295 | FORMAT and the remaining arguments, then gets the reply. Returns | |
9296 | whether the packet was a success, a failure, or unknown. */ | |
9297 | ||
6b8edb51 PA |
9298 | packet_result |
9299 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
9300 | { |
9301 | struct remote_state *rs = get_remote_state (); | |
9302 | int max_size = get_remote_packet_size (); | |
a76d924d | 9303 | va_list ap; |
a744cf53 | 9304 | |
a76d924d DJ |
9305 | va_start (ap, format); |
9306 | ||
9307 | rs->buf[0] = '\0'; | |
8d64371b | 9308 | int size = vsnprintf (rs->buf.data (), max_size, format, ap); |
33b031ce GB |
9309 | |
9310 | va_end (ap); | |
9311 | ||
9312 | if (size >= max_size) | |
9b20d036 | 9313 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
9314 | |
9315 | if (putpkt (rs->buf) < 0) | |
9316 | error (_("Communication problem with target.")); | |
9317 | ||
9318 | rs->buf[0] = '\0'; | |
8d64371b | 9319 | getpkt (&rs->buf, 0); |
a76d924d DJ |
9320 | |
9321 | return packet_check_result (rs->buf); | |
9322 | } | |
9323 | ||
a76d924d DJ |
9324 | /* Flash writing can take quite some time. We'll set |
9325 | effectively infinite timeout for flash operations. | |
9326 | In future, we'll need to decide on a better approach. */ | |
9327 | static const int remote_flash_timeout = 1000; | |
9328 | ||
f6ac5f3d PA |
9329 | void |
9330 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 9331 | { |
f5656ead | 9332 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 9333 | enum packet_result ret; |
2ec845e7 TT |
9334 | scoped_restore restore_timeout |
9335 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
9336 | |
9337 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 9338 | phex (address, addr_size), |
a76d924d DJ |
9339 | phex (length, 4)); |
9340 | switch (ret) | |
9341 | { | |
9342 | case PACKET_UNKNOWN: | |
9343 | error (_("Remote target does not support flash erase")); | |
9344 | case PACKET_ERROR: | |
9345 | error (_("Error erasing flash with vFlashErase packet")); | |
9346 | default: | |
9347 | break; | |
9348 | } | |
a76d924d DJ |
9349 | } |
9350 | ||
6b8edb51 PA |
9351 | target_xfer_status |
9352 | remote_target::remote_flash_write (ULONGEST address, | |
9353 | ULONGEST length, ULONGEST *xfered_len, | |
9354 | const gdb_byte *data) | |
a76d924d | 9355 | { |
2ec845e7 TT |
9356 | scoped_restore restore_timeout |
9357 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9358 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
9359 | xfered_len,'X', 0); | |
a76d924d DJ |
9360 | } |
9361 | ||
f6ac5f3d PA |
9362 | void |
9363 | remote_target::flash_done () | |
a76d924d | 9364 | { |
a76d924d | 9365 | int ret; |
a76d924d | 9366 | |
2ec845e7 TT |
9367 | scoped_restore restore_timeout |
9368 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9369 | ||
a76d924d | 9370 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
9371 | |
9372 | switch (ret) | |
9373 | { | |
9374 | case PACKET_UNKNOWN: | |
9375 | error (_("Remote target does not support vFlashDone")); | |
9376 | case PACKET_ERROR: | |
9377 | error (_("Error finishing flash operation")); | |
9378 | default: | |
9379 | break; | |
9380 | } | |
9381 | } | |
9382 | ||
f6ac5f3d PA |
9383 | void |
9384 | remote_target::files_info () | |
c906108c SS |
9385 | { |
9386 | puts_filtered ("Debugging a target over a serial line.\n"); | |
9387 | } | |
9388 | \f | |
9389 | /* Stuff for dealing with the packets which are part of this protocol. | |
9390 | See comment at top of file for details. */ | |
9391 | ||
1927e618 PA |
9392 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
9393 | error to higher layers. Called when a serial error is detected. | |
9394 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
9395 | the system error message for errno at function entry and final dot |
9396 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
9397 | |
9398 | static void | |
5b6d1e4f | 9399 | unpush_and_perror (remote_target *target, const char *string) |
1927e618 | 9400 | { |
d6cb50a2 | 9401 | int saved_errno = errno; |
1927e618 | 9402 | |
5b6d1e4f | 9403 | remote_unpush_target (target); |
d6cb50a2 JK |
9404 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
9405 | safe_strerror (saved_errno)); | |
1927e618 PA |
9406 | } |
9407 | ||
048094ac PA |
9408 | /* Read a single character from the remote end. The current quit |
9409 | handler is overridden to avoid quitting in the middle of packet | |
9410 | sequence, as that would break communication with the remote server. | |
9411 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 9412 | |
6b8edb51 PA |
9413 | int |
9414 | remote_target::readchar (int timeout) | |
c906108c SS |
9415 | { |
9416 | int ch; | |
5d93a237 | 9417 | struct remote_state *rs = get_remote_state (); |
048094ac | 9418 | |
2ec845e7 | 9419 | { |
6b8edb51 PA |
9420 | scoped_restore restore_quit_target |
9421 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9422 | scoped_restore restore_quit |
6b8edb51 | 9423 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 9424 | |
2ec845e7 | 9425 | rs->got_ctrlc_during_io = 0; |
c906108c | 9426 | |
2ec845e7 | 9427 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 9428 | |
2ec845e7 TT |
9429 | if (rs->got_ctrlc_during_io) |
9430 | set_quit_flag (); | |
9431 | } | |
048094ac | 9432 | |
2acceee2 | 9433 | if (ch >= 0) |
0876f84a | 9434 | return ch; |
2acceee2 JM |
9435 | |
9436 | switch ((enum serial_rc) ch) | |
c906108c SS |
9437 | { |
9438 | case SERIAL_EOF: | |
5b6d1e4f | 9439 | remote_unpush_target (this); |
598d3636 | 9440 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 9441 | /* no return */ |
c906108c | 9442 | case SERIAL_ERROR: |
5b6d1e4f PA |
9443 | unpush_and_perror (this, _("Remote communication error. " |
9444 | "Target disconnected.")); | |
2acceee2 | 9445 | /* no return */ |
c906108c | 9446 | case SERIAL_TIMEOUT: |
2acceee2 | 9447 | break; |
c906108c | 9448 | } |
2acceee2 | 9449 | return ch; |
c906108c SS |
9450 | } |
9451 | ||
c33e31fd | 9452 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9453 | writing fails. The current quit handler is overridden to avoid |
9454 | quitting in the middle of packet sequence, as that would break | |
9455 | communication with the remote server. See | |
9456 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9457 | |
6b8edb51 PA |
9458 | void |
9459 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9460 | { |
5d93a237 | 9461 | struct remote_state *rs = get_remote_state (); |
048094ac | 9462 | |
6b8edb51 PA |
9463 | scoped_restore restore_quit_target |
9464 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9465 | scoped_restore restore_quit |
6b8edb51 | 9466 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9467 | |
9468 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9469 | |
9470 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9471 | { |
5b6d1e4f PA |
9472 | unpush_and_perror (this, _("Remote communication error. " |
9473 | "Target disconnected.")); | |
c33e31fd | 9474 | } |
048094ac PA |
9475 | |
9476 | if (rs->got_ctrlc_during_io) | |
9477 | set_quit_flag (); | |
c33e31fd PA |
9478 | } |
9479 | ||
b3ced9ba PA |
9480 | /* Return a string representing an escaped version of BUF, of len N. |
9481 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9482 | |
b3ced9ba | 9483 | static std::string |
6e5abd65 PA |
9484 | escape_buffer (const char *buf, int n) |
9485 | { | |
d7e74731 | 9486 | string_file stb; |
6e5abd65 | 9487 | |
d7e74731 PA |
9488 | stb.putstrn (buf, n, '\\'); |
9489 | return std::move (stb.string ()); | |
6e5abd65 PA |
9490 | } |
9491 | ||
c906108c SS |
9492 | /* Display a null-terminated packet on stdout, for debugging, using C |
9493 | string notation. */ | |
9494 | ||
9495 | static void | |
baa336ce | 9496 | print_packet (const char *buf) |
c906108c SS |
9497 | { |
9498 | puts_filtered ("\""); | |
43e526b9 | 9499 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
9500 | puts_filtered ("\""); |
9501 | } | |
9502 | ||
9503 | int | |
6b8edb51 | 9504 | remote_target::putpkt (const char *buf) |
c906108c SS |
9505 | { |
9506 | return putpkt_binary (buf, strlen (buf)); | |
9507 | } | |
9508 | ||
6b8edb51 PA |
9509 | /* Wrapper around remote_target::putpkt to avoid exporting |
9510 | remote_target. */ | |
9511 | ||
9512 | int | |
9513 | putpkt (remote_target *remote, const char *buf) | |
9514 | { | |
9515 | return remote->putpkt (buf); | |
9516 | } | |
9517 | ||
c906108c | 9518 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9519 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9520 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9521 | and for a possible /0 if we are debugging (remote_debug) and want |
9522 | to print the sent packet as a string. */ | |
c906108c | 9523 | |
6b8edb51 PA |
9524 | int |
9525 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9526 | { |
2d717e4f | 9527 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9528 | int i; |
9529 | unsigned char csum = 0; | |
b80406ac TT |
9530 | gdb::def_vector<char> data (cnt + 6); |
9531 | char *buf2 = data.data (); | |
085dd6e6 | 9532 | |
c906108c SS |
9533 | int ch; |
9534 | int tcount = 0; | |
9535 | char *p; | |
9536 | ||
e24a49d8 PA |
9537 | /* Catch cases like trying to read memory or listing threads while |
9538 | we're waiting for a stop reply. The remote server wouldn't be | |
9539 | ready to handle this request, so we'd hang and timeout. We don't | |
9540 | have to worry about this in synchronous mode, because in that | |
9541 | case it's not possible to issue a command while the target is | |
74531fed PA |
9542 | running. This is not a problem in non-stop mode, because in that |
9543 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9544 | if (!target_is_non_stop_p () |
9545 | && target_is_async_p () | |
9546 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9547 | { |
9548 | error (_("Cannot execute this command while the target is running.\n" | |
9549 | "Use the \"interrupt\" command to stop the target\n" | |
9550 | "and then try again.")); | |
9551 | } | |
e24a49d8 | 9552 | |
2d717e4f DJ |
9553 | /* We're sending out a new packet. Make sure we don't look at a |
9554 | stale cached response. */ | |
9555 | rs->cached_wait_status = 0; | |
9556 | ||
c906108c SS |
9557 | /* Copy the packet into buffer BUF2, encapsulating it |
9558 | and giving it a checksum. */ | |
9559 | ||
c906108c SS |
9560 | p = buf2; |
9561 | *p++ = '$'; | |
9562 | ||
9563 | for (i = 0; i < cnt; i++) | |
9564 | { | |
9565 | csum += buf[i]; | |
9566 | *p++ = buf[i]; | |
9567 | } | |
9568 | *p++ = '#'; | |
9569 | *p++ = tohex ((csum >> 4) & 0xf); | |
9570 | *p++ = tohex (csum & 0xf); | |
9571 | ||
9572 | /* Send it over and over until we get a positive ack. */ | |
9573 | ||
9574 | while (1) | |
9575 | { | |
c906108c SS |
9576 | if (remote_debug) |
9577 | { | |
9578 | *p = '\0'; | |
b3ced9ba | 9579 | |
6f8976bf | 9580 | int len = (int) (p - buf2); |
6cc8564b LM |
9581 | int max_chars; |
9582 | ||
9583 | if (remote_packet_max_chars < 0) | |
9584 | max_chars = len; | |
9585 | else | |
9586 | max_chars = remote_packet_max_chars; | |
6f8976bf YQ |
9587 | |
9588 | std::string str | |
6cc8564b | 9589 | = escape_buffer (buf2, std::min (len, max_chars)); |
6f8976bf | 9590 | |
6cc8564b | 9591 | if (len > max_chars) |
2189c312 SM |
9592 | remote_debug_printf_nofunc |
9593 | ("Sending packet: %s [%d bytes omitted]", str.c_str (), | |
9594 | len - max_chars); | |
9595 | else | |
9596 | remote_debug_printf_nofunc ("Sending packet: %s", str.c_str ()); | |
c906108c | 9597 | } |
c33e31fd | 9598 | remote_serial_write (buf2, p - buf2); |
c906108c | 9599 | |
a6f3e723 SL |
9600 | /* If this is a no acks version of the remote protocol, send the |
9601 | packet and move on. */ | |
9602 | if (rs->noack_mode) | |
dda83cd7 | 9603 | break; |
a6f3e723 | 9604 | |
74531fed PA |
9605 | /* Read until either a timeout occurs (-2) or '+' is read. |
9606 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9607 | while (1) |
9608 | { | |
9609 | ch = readchar (remote_timeout); | |
9610 | ||
c906108c SS |
9611 | switch (ch) |
9612 | { | |
9613 | case '+': | |
2189c312 | 9614 | remote_debug_printf_nofunc ("Received Ack"); |
c906108c | 9615 | return 1; |
1216fa2c | 9616 | case '-': |
2189c312 | 9617 | remote_debug_printf_nofunc ("Received Nak"); |
a17d146e | 9618 | /* FALLTHROUGH */ |
c906108c | 9619 | case SERIAL_TIMEOUT: |
c5aa993b | 9620 | tcount++; |
c906108c | 9621 | if (tcount > 3) |
b80406ac | 9622 | return 0; |
23860348 | 9623 | break; /* Retransmit buffer. */ |
c906108c SS |
9624 | case '$': |
9625 | { | |
2189c312 | 9626 | remote_debug_printf ("Packet instead of Ack, ignoring it"); |
d6f7abdf AC |
9627 | /* It's probably an old response sent because an ACK |
9628 | was lost. Gobble up the packet and ack it so it | |
9629 | doesn't get retransmitted when we resend this | |
9630 | packet. */ | |
6d820c5c | 9631 | skip_frame (); |
c33e31fd | 9632 | remote_serial_write ("+", 1); |
23860348 | 9633 | continue; /* Now, go look for +. */ |
c906108c | 9634 | } |
74531fed PA |
9635 | |
9636 | case '%': | |
9637 | { | |
9638 | int val; | |
9639 | ||
9640 | /* If we got a notification, handle it, and go back to looking | |
9641 | for an ack. */ | |
9642 | /* We've found the start of a notification. Now | |
9643 | collect the data. */ | |
8d64371b | 9644 | val = read_frame (&rs->buf); |
74531fed PA |
9645 | if (val >= 0) |
9646 | { | |
2189c312 SM |
9647 | remote_debug_printf_nofunc |
9648 | (" Notification received: %s", | |
9649 | escape_buffer (rs->buf.data (), val).c_str ()); | |
6e5abd65 | 9650 | |
8d64371b | 9651 | handle_notification (rs->notif_state, rs->buf.data ()); |
74531fed PA |
9652 | /* We're in sync now, rewait for the ack. */ |
9653 | tcount = 0; | |
9654 | } | |
9655 | else | |
2189c312 SM |
9656 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9657 | rs->buf.data ()); | |
74531fed PA |
9658 | continue; |
9659 | } | |
9660 | /* fall-through */ | |
c906108c | 9661 | default: |
2189c312 SM |
9662 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9663 | rs->buf.data ()); | |
c906108c SS |
9664 | continue; |
9665 | } | |
23860348 | 9666 | break; /* Here to retransmit. */ |
c906108c SS |
9667 | } |
9668 | ||
9669 | #if 0 | |
9670 | /* This is wrong. If doing a long backtrace, the user should be | |
dda83cd7 SM |
9671 | able to get out next time we call QUIT, without anything as |
9672 | violent as interrupt_query. If we want to provide a way out of | |
9673 | here without getting to the next QUIT, it should be based on | |
9674 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9675 | if (quit_flag) |
9676 | { | |
9677 | quit_flag = 0; | |
9678 | interrupt_query (); | |
9679 | } | |
9680 | #endif | |
9681 | } | |
a5c0808e | 9682 | |
a6f3e723 | 9683 | return 0; |
c906108c SS |
9684 | } |
9685 | ||
6d820c5c DJ |
9686 | /* Come here after finding the start of a frame when we expected an |
9687 | ack. Do our best to discard the rest of this packet. */ | |
9688 | ||
6b8edb51 PA |
9689 | void |
9690 | remote_target::skip_frame () | |
6d820c5c DJ |
9691 | { |
9692 | int c; | |
9693 | ||
9694 | while (1) | |
9695 | { | |
9696 | c = readchar (remote_timeout); | |
9697 | switch (c) | |
9698 | { | |
9699 | case SERIAL_TIMEOUT: | |
9700 | /* Nothing we can do. */ | |
9701 | return; | |
9702 | case '#': | |
9703 | /* Discard the two bytes of checksum and stop. */ | |
9704 | c = readchar (remote_timeout); | |
9705 | if (c >= 0) | |
9706 | c = readchar (remote_timeout); | |
9707 | ||
9708 | return; | |
9709 | case '*': /* Run length encoding. */ | |
9710 | /* Discard the repeat count. */ | |
9711 | c = readchar (remote_timeout); | |
9712 | if (c < 0) | |
9713 | return; | |
9714 | break; | |
9715 | default: | |
9716 | /* A regular character. */ | |
9717 | break; | |
9718 | } | |
9719 | } | |
9720 | } | |
9721 | ||
c906108c | 9722 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9723 | into *BUF, verifying the checksum, length, and handling run-length |
9724 | compression. NUL terminate the buffer. If there is not enough room, | |
8d64371b | 9725 | expand *BUF. |
c906108c | 9726 | |
c2d11a7d JM |
9727 | Returns -1 on error, number of characters in buffer (ignoring the |
9728 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9729 | SERIAL status indications). */ |
c2d11a7d | 9730 | |
6b8edb51 | 9731 | long |
8d64371b | 9732 | remote_target::read_frame (gdb::char_vector *buf_p) |
c906108c SS |
9733 | { |
9734 | unsigned char csum; | |
c2d11a7d | 9735 | long bc; |
c906108c | 9736 | int c; |
8d64371b | 9737 | char *buf = buf_p->data (); |
a6f3e723 | 9738 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9739 | |
9740 | csum = 0; | |
c2d11a7d | 9741 | bc = 0; |
c906108c SS |
9742 | |
9743 | while (1) | |
9744 | { | |
9745 | c = readchar (remote_timeout); | |
c906108c SS |
9746 | switch (c) |
9747 | { | |
9748 | case SERIAL_TIMEOUT: | |
2189c312 | 9749 | remote_debug_printf ("Timeout in mid-packet, retrying"); |
c2d11a7d | 9750 | return -1; |
2189c312 | 9751 | |
c906108c | 9752 | case '$': |
2189c312 | 9753 | remote_debug_printf ("Saw new packet start in middle of old one"); |
23860348 | 9754 | return -1; /* Start a new packet, count retries. */ |
2189c312 | 9755 | |
c906108c SS |
9756 | case '#': |
9757 | { | |
9758 | unsigned char pktcsum; | |
e1b09194 AC |
9759 | int check_0 = 0; |
9760 | int check_1 = 0; | |
c906108c | 9761 | |
c2d11a7d | 9762 | buf[bc] = '\0'; |
c906108c | 9763 | |
e1b09194 AC |
9764 | check_0 = readchar (remote_timeout); |
9765 | if (check_0 >= 0) | |
9766 | check_1 = readchar (remote_timeout); | |
802188a7 | 9767 | |
e1b09194 AC |
9768 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9769 | { | |
2189c312 | 9770 | remote_debug_printf ("Timeout in checksum, retrying"); |
e1b09194 AC |
9771 | return -1; |
9772 | } | |
9773 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 | 9774 | { |
2189c312 | 9775 | remote_debug_printf ("Communication error in checksum"); |
40e3f985 FN |
9776 | return -1; |
9777 | } | |
c906108c | 9778 | |
a6f3e723 SL |
9779 | /* Don't recompute the checksum; with no ack packets we |
9780 | don't have any way to indicate a packet retransmission | |
9781 | is necessary. */ | |
9782 | if (rs->noack_mode) | |
9783 | return bc; | |
9784 | ||
e1b09194 | 9785 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9786 | if (csum == pktcsum) |
dda83cd7 | 9787 | return bc; |
c906108c | 9788 | |
2189c312 SM |
9789 | remote_debug_printf |
9790 | ("Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s", | |
9791 | pktcsum, csum, escape_buffer (buf, bc).c_str ()); | |
6e5abd65 | 9792 | |
c2d11a7d | 9793 | /* Number of characters in buffer ignoring trailing |
dda83cd7 | 9794 | NULL. */ |
c2d11a7d | 9795 | return -1; |
c906108c | 9796 | } |
23860348 | 9797 | case '*': /* Run length encoding. */ |
dda83cd7 | 9798 | { |
c2c6d25f | 9799 | int repeat; |
c906108c | 9800 | |
24b21115 | 9801 | csum += c; |
b4501125 AC |
9802 | c = readchar (remote_timeout); |
9803 | csum += c; | |
23860348 | 9804 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9805 | |
23860348 | 9806 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9807 | |
6d820c5c | 9808 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9809 | { |
8d64371b | 9810 | if (bc + repeat - 1 >= buf_p->size () - 1) |
6d820c5c DJ |
9811 | { |
9812 | /* Make some more room in the buffer. */ | |
8d64371b TT |
9813 | buf_p->resize (buf_p->size () + repeat); |
9814 | buf = buf_p->data (); | |
6d820c5c DJ |
9815 | } |
9816 | ||
c2d11a7d JM |
9817 | memset (&buf[bc], buf[bc - 1], repeat); |
9818 | bc += repeat; | |
c2c6d25f JM |
9819 | continue; |
9820 | } | |
9821 | ||
c2d11a7d | 9822 | buf[bc] = '\0'; |
6d820c5c | 9823 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9824 | return -1; |
c2c6d25f | 9825 | } |
c906108c | 9826 | default: |
8d64371b | 9827 | if (bc >= buf_p->size () - 1) |
c906108c | 9828 | { |
6d820c5c | 9829 | /* Make some more room in the buffer. */ |
8d64371b TT |
9830 | buf_p->resize (buf_p->size () * 2); |
9831 | buf = buf_p->data (); | |
c906108c SS |
9832 | } |
9833 | ||
6d820c5c DJ |
9834 | buf[bc++] = c; |
9835 | csum += c; | |
9836 | continue; | |
c906108c SS |
9837 | } |
9838 | } | |
9839 | } | |
9840 | ||
ed2b7c17 TT |
9841 | /* Set this to the maximum number of seconds to wait instead of waiting forever |
9842 | in target_wait(). If this timer times out, then it generates an error and | |
9843 | the command is aborted. This replaces most of the need for timeouts in the | |
9844 | GDB test suite, and makes it possible to distinguish between a hung target | |
9845 | and one with slow communications. */ | |
9846 | ||
9847 | static int watchdog = 0; | |
9848 | static void | |
9849 | show_watchdog (struct ui_file *file, int from_tty, | |
9850 | struct cmd_list_element *c, const char *value) | |
9851 | { | |
9852 | fprintf_filtered (file, _("Watchdog timer is %s.\n"), value); | |
9853 | } | |
9854 | ||
c906108c | 9855 | /* Read a packet from the remote machine, with error checking, and |
8d64371b TT |
9856 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9857 | FOREVER, wait forever rather than timing out; this is used (in | |
9858 | synchronous mode) to wait for a target that is is executing user | |
9859 | code to stop. */ | |
d9fcf2fb JM |
9860 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9861 | don't have to change all the calls to getpkt to deal with the | |
9862 | return value, because at the moment I don't know what the right | |
23860348 | 9863 | thing to do it for those. */ |
6b8edb51 | 9864 | |
c906108c | 9865 | void |
8d64371b | 9866 | remote_target::getpkt (gdb::char_vector *buf, int forever) |
d9fcf2fb | 9867 | { |
8d64371b | 9868 | getpkt_sane (buf, forever); |
d9fcf2fb JM |
9869 | } |
9870 | ||
9871 | ||
9872 | /* Read a packet from the remote machine, with error checking, and | |
8d64371b TT |
9873 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9874 | FOREVER, wait forever rather than timing out; this is used (in | |
9875 | synchronous mode) to wait for a target that is is executing user | |
9876 | code to stop. If FOREVER == 0, this function is allowed to time | |
9877 | out gracefully and return an indication of this to the caller. | |
9878 | Otherwise return the number of bytes read. If EXPECTING_NOTIF, | |
9879 | consider receiving a notification enough reason to return to the | |
9880 | caller. *IS_NOTIF is an output boolean that indicates whether *BUF | |
9881 | holds a notification or not (a regular packet). */ | |
74531fed | 9882 | |
6b8edb51 | 9883 | int |
8d64371b | 9884 | remote_target::getpkt_or_notif_sane_1 (gdb::char_vector *buf, |
6b8edb51 PA |
9885 | int forever, int expecting_notif, |
9886 | int *is_notif) | |
c906108c | 9887 | { |
2d717e4f | 9888 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9889 | int c; |
9890 | int tries; | |
9891 | int timeout; | |
df4b58fe | 9892 | int val = -1; |
c906108c | 9893 | |
2d717e4f DJ |
9894 | /* We're reading a new response. Make sure we don't look at a |
9895 | previously cached response. */ | |
9896 | rs->cached_wait_status = 0; | |
9897 | ||
8d64371b | 9898 | strcpy (buf->data (), "timeout"); |
c906108c SS |
9899 | |
9900 | if (forever) | |
74531fed PA |
9901 | timeout = watchdog > 0 ? watchdog : -1; |
9902 | else if (expecting_notif) | |
9903 | timeout = 0; /* There should already be a char in the buffer. If | |
9904 | not, bail out. */ | |
c906108c SS |
9905 | else |
9906 | timeout = remote_timeout; | |
9907 | ||
9908 | #define MAX_TRIES 3 | |
9909 | ||
74531fed PA |
9910 | /* Process any number of notifications, and then return when |
9911 | we get a packet. */ | |
9912 | for (;;) | |
c906108c | 9913 | { |
d9c43928 | 9914 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9915 | times. */ |
9916 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9917 | { |
74531fed PA |
9918 | /* This can loop forever if the remote side sends us |
9919 | characters continuously, but if it pauses, we'll get | |
9920 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9921 | we'll count that as a retry. | |
9922 | ||
9923 | Note that even when forever is set, we will only wait | |
9924 | forever prior to the start of a packet. After that, we | |
9925 | expect characters to arrive at a brisk pace. They should | |
9926 | show up within remote_timeout intervals. */ | |
9927 | do | |
9928 | c = readchar (timeout); | |
9929 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9930 | |
9931 | if (c == SERIAL_TIMEOUT) | |
9932 | { | |
74531fed PA |
9933 | if (expecting_notif) |
9934 | return -1; /* Don't complain, it's normal to not get | |
9935 | anything in this case. */ | |
9936 | ||
23860348 | 9937 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9938 | { |
5b6d1e4f | 9939 | remote_unpush_target (this); |
598d3636 JK |
9940 | throw_error (TARGET_CLOSE_ERROR, |
9941 | _("Watchdog timeout has expired. " | |
9942 | "Target detached.")); | |
c906108c | 9943 | } |
2189c312 SM |
9944 | |
9945 | remote_debug_printf ("Timed out."); | |
c906108c | 9946 | } |
74531fed PA |
9947 | else |
9948 | { | |
9949 | /* We've found the start of a packet or notification. | |
9950 | Now collect the data. */ | |
8d64371b | 9951 | val = read_frame (buf); |
74531fed PA |
9952 | if (val >= 0) |
9953 | break; | |
9954 | } | |
9955 | ||
c33e31fd | 9956 | remote_serial_write ("-", 1); |
c906108c | 9957 | } |
c906108c | 9958 | |
74531fed PA |
9959 | if (tries > MAX_TRIES) |
9960 | { | |
9961 | /* We have tried hard enough, and just can't receive the | |
9962 | packet/notification. Give up. */ | |
9963 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9964 | |
74531fed PA |
9965 | /* Skip the ack char if we're in no-ack mode. */ |
9966 | if (!rs->noack_mode) | |
c33e31fd | 9967 | remote_serial_write ("+", 1); |
74531fed PA |
9968 | return -1; |
9969 | } | |
c906108c | 9970 | |
74531fed PA |
9971 | /* If we got an ordinary packet, return that to our caller. */ |
9972 | if (c == '$') | |
c906108c SS |
9973 | { |
9974 | if (remote_debug) | |
43e526b9 | 9975 | { |
6cc8564b LM |
9976 | int max_chars; |
9977 | ||
9978 | if (remote_packet_max_chars < 0) | |
9979 | max_chars = val; | |
9980 | else | |
9981 | max_chars = remote_packet_max_chars; | |
9982 | ||
6f8976bf | 9983 | std::string str |
8d64371b | 9984 | = escape_buffer (buf->data (), |
6cc8564b | 9985 | std::min (val, max_chars)); |
6f8976bf | 9986 | |
6cc8564b | 9987 | if (val > max_chars) |
2189c312 SM |
9988 | remote_debug_printf_nofunc |
9989 | ("Packet received: %s [%d bytes omitted]", str.c_str (), | |
9990 | val - max_chars); | |
9991 | else | |
9992 | remote_debug_printf_nofunc ("Packet received: %s", | |
9993 | str.c_str ()); | |
43e526b9 | 9994 | } |
a6f3e723 SL |
9995 | |
9996 | /* Skip the ack char if we're in no-ack mode. */ | |
9997 | if (!rs->noack_mode) | |
c33e31fd | 9998 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9999 | if (is_notif != NULL) |
10000 | *is_notif = 0; | |
0876f84a | 10001 | return val; |
c906108c SS |
10002 | } |
10003 | ||
74531fed PA |
10004 | /* If we got a notification, handle it, and go back to looking |
10005 | for a packet. */ | |
10006 | else | |
10007 | { | |
10008 | gdb_assert (c == '%'); | |
10009 | ||
2189c312 SM |
10010 | remote_debug_printf_nofunc |
10011 | (" Notification received: %s", | |
10012 | escape_buffer (buf->data (), val).c_str ()); | |
6e5abd65 | 10013 | |
fee9eda9 YQ |
10014 | if (is_notif != NULL) |
10015 | *is_notif = 1; | |
c906108c | 10016 | |
8d64371b | 10017 | handle_notification (rs->notif_state, buf->data ()); |
c906108c | 10018 | |
74531fed | 10019 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 10020 | |
74531fed | 10021 | if (expecting_notif) |
fee9eda9 | 10022 | return val; |
74531fed PA |
10023 | } |
10024 | } | |
10025 | } | |
10026 | ||
6b8edb51 | 10027 | int |
8d64371b | 10028 | remote_target::getpkt_sane (gdb::char_vector *buf, int forever) |
74531fed | 10029 | { |
8d64371b | 10030 | return getpkt_or_notif_sane_1 (buf, forever, 0, NULL); |
74531fed PA |
10031 | } |
10032 | ||
6b8edb51 | 10033 | int |
8d64371b | 10034 | remote_target::getpkt_or_notif_sane (gdb::char_vector *buf, int forever, |
6b8edb51 | 10035 | int *is_notif) |
74531fed | 10036 | { |
8d64371b | 10037 | return getpkt_or_notif_sane_1 (buf, forever, 1, is_notif); |
c906108c | 10038 | } |
74531fed | 10039 | |
cbb8991c DB |
10040 | /* Kill any new fork children of process PID that haven't been |
10041 | processed by follow_fork. */ | |
10042 | ||
6b8edb51 PA |
10043 | void |
10044 | remote_target::kill_new_fork_children (int pid) | |
cbb8991c | 10045 | { |
6b8edb51 | 10046 | remote_state *rs = get_remote_state (); |
cbb8991c | 10047 | struct notif_client *notif = ¬if_client_stop; |
cbb8991c DB |
10048 | |
10049 | /* Kill the fork child threads of any threads in process PID | |
10050 | that are stopped at a fork event. */ | |
5b6d1e4f | 10051 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c DB |
10052 | { |
10053 | struct target_waitstatus *ws = &thread->pending_follow; | |
10054 | ||
10055 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
10056 | { | |
953edf2b | 10057 | int child_pid = ws->value.related_pid.pid (); |
cbb8991c DB |
10058 | int res; |
10059 | ||
6b8edb51 | 10060 | res = remote_vkill (child_pid); |
cbb8991c DB |
10061 | if (res != 0) |
10062 | error (_("Can't kill fork child process %d"), child_pid); | |
10063 | } | |
10064 | } | |
10065 | ||
10066 | /* Check for any pending fork events (not reported or processed yet) | |
10067 | in process PID and kill those fork child threads as well. */ | |
10068 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
10069 | for (auto &event : rs->stop_reply_queue) |
10070 | if (is_pending_fork_parent (&event->ws, pid, event->ptid)) | |
10071 | { | |
10072 | int child_pid = event->ws.value.related_pid.pid (); | |
10073 | int res; | |
10074 | ||
10075 | res = remote_vkill (child_pid); | |
10076 | if (res != 0) | |
10077 | error (_("Can't kill fork child process %d"), child_pid); | |
10078 | } | |
cbb8991c DB |
10079 | } |
10080 | ||
c906108c | 10081 | \f |
8020350c DB |
10082 | /* Target hook to kill the current inferior. */ |
10083 | ||
f6ac5f3d PA |
10084 | void |
10085 | remote_target::kill () | |
43ff13b4 | 10086 | { |
8020350c | 10087 | int res = -1; |
e99b03dc | 10088 | int pid = inferior_ptid.pid (); |
8020350c | 10089 | struct remote_state *rs = get_remote_state (); |
0fdf84ca | 10090 | |
8020350c | 10091 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 10092 | { |
8020350c DB |
10093 | /* If we're stopped while forking and we haven't followed yet, |
10094 | kill the child task. We need to do this before killing the | |
10095 | parent task because if this is a vfork then the parent will | |
10096 | be sleeping. */ | |
6b8edb51 | 10097 | kill_new_fork_children (pid); |
8020350c | 10098 | |
6b8edb51 | 10099 | res = remote_vkill (pid); |
8020350c | 10100 | if (res == 0) |
0fdf84ca | 10101 | { |
bc1e6c81 | 10102 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
10103 | return; |
10104 | } | |
8020350c | 10105 | } |
0fdf84ca | 10106 | |
8020350c DB |
10107 | /* If we are in 'target remote' mode and we are killing the only |
10108 | inferior, then we will tell gdbserver to exit and unpush the | |
10109 | target. */ | |
10110 | if (res == -1 && !remote_multi_process_p (rs) | |
5b6d1e4f | 10111 | && number_of_live_inferiors (this) == 1) |
8020350c DB |
10112 | { |
10113 | remote_kill_k (); | |
10114 | ||
10115 | /* We've killed the remote end, we get to mourn it. If we are | |
10116 | not in extended mode, mourning the inferior also unpushes | |
10117 | remote_ops from the target stack, which closes the remote | |
10118 | connection. */ | |
bc1e6c81 | 10119 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
10120 | |
10121 | return; | |
0fdf84ca | 10122 | } |
43ff13b4 | 10123 | |
8020350c | 10124 | error (_("Can't kill process")); |
43ff13b4 JM |
10125 | } |
10126 | ||
8020350c DB |
10127 | /* Send a kill request to the target using the 'vKill' packet. */ |
10128 | ||
6b8edb51 PA |
10129 | int |
10130 | remote_target::remote_vkill (int pid) | |
82f73884 | 10131 | { |
4082afcc | 10132 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
10133 | return -1; |
10134 | ||
6b8edb51 PA |
10135 | remote_state *rs = get_remote_state (); |
10136 | ||
82f73884 | 10137 | /* Tell the remote target to detach. */ |
8d64371b | 10138 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vKill;%x", pid); |
82f73884 | 10139 | putpkt (rs->buf); |
8d64371b | 10140 | getpkt (&rs->buf, 0); |
82f73884 | 10141 | |
4082afcc PA |
10142 | switch (packet_ok (rs->buf, |
10143 | &remote_protocol_packets[PACKET_vKill])) | |
10144 | { | |
10145 | case PACKET_OK: | |
10146 | return 0; | |
10147 | case PACKET_ERROR: | |
10148 | return 1; | |
10149 | case PACKET_UNKNOWN: | |
10150 | return -1; | |
10151 | default: | |
10152 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
10153 | } | |
82f73884 PA |
10154 | } |
10155 | ||
8020350c DB |
10156 | /* Send a kill request to the target using the 'k' packet. */ |
10157 | ||
6b8edb51 PA |
10158 | void |
10159 | remote_target::remote_kill_k () | |
82f73884 | 10160 | { |
8020350c DB |
10161 | /* Catch errors so the user can quit from gdb even when we |
10162 | aren't on speaking terms with the remote system. */ | |
a70b8144 | 10163 | try |
82f73884 | 10164 | { |
82f73884 | 10165 | putpkt ("k"); |
82f73884 | 10166 | } |
230d2906 | 10167 | catch (const gdb_exception_error &ex) |
8020350c DB |
10168 | { |
10169 | if (ex.error == TARGET_CLOSE_ERROR) | |
10170 | { | |
10171 | /* If we got an (EOF) error that caused the target | |
10172 | to go away, then we're done, that's what we wanted. | |
10173 | "k" is susceptible to cause a premature EOF, given | |
10174 | that the remote server isn't actually required to | |
10175 | reply to "k", and it can happen that it doesn't | |
10176 | even get to reply ACK to the "k". */ | |
10177 | return; | |
10178 | } | |
82f73884 | 10179 | |
8020350c DB |
10180 | /* Otherwise, something went wrong. We didn't actually kill |
10181 | the target. Just propagate the exception, and let the | |
10182 | user or higher layers decide what to do. */ | |
eedc3f4f | 10183 | throw; |
8020350c | 10184 | } |
82f73884 PA |
10185 | } |
10186 | ||
f6ac5f3d PA |
10187 | void |
10188 | remote_target::mourn_inferior () | |
c906108c | 10189 | { |
8020350c | 10190 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 10191 | |
9607784a PA |
10192 | /* We're no longer interested in notification events of an inferior |
10193 | that exited or was killed/detached. */ | |
10194 | discard_pending_stop_replies (current_inferior ()); | |
10195 | ||
8020350c | 10196 | /* In 'target remote' mode with one inferior, we close the connection. */ |
5b6d1e4f | 10197 | if (!rs->extended && number_of_live_inferiors (this) <= 1) |
8020350c | 10198 | { |
5b6d1e4f | 10199 | remote_unpush_target (this); |
8020350c DB |
10200 | return; |
10201 | } | |
c906108c | 10202 | |
e24a49d8 PA |
10203 | /* In case we got here due to an error, but we're going to stay |
10204 | connected. */ | |
10205 | rs->waiting_for_stop_reply = 0; | |
10206 | ||
dc1981d7 PA |
10207 | /* If the current general thread belonged to the process we just |
10208 | detached from or has exited, the remote side current general | |
10209 | thread becomes undefined. Considering a case like this: | |
10210 | ||
10211 | - We just got here due to a detach. | |
10212 | - The process that we're detaching from happens to immediately | |
10213 | report a global breakpoint being hit in non-stop mode, in the | |
10214 | same thread we had selected before. | |
10215 | - GDB attaches to this process again. | |
10216 | - This event happens to be the next event we handle. | |
10217 | ||
10218 | GDB would consider that the current general thread didn't need to | |
10219 | be set on the stub side (with Hg), since for all it knew, | |
10220 | GENERAL_THREAD hadn't changed. | |
10221 | ||
10222 | Notice that although in all-stop mode, the remote server always | |
10223 | sets the current thread to the thread reporting the stop event, | |
10224 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
10225 | not* change the current thread when reporting a breakpoint hit, | |
10226 | due to the decoupling of event reporting and event handling. | |
10227 | ||
10228 | To keep things simple, we always invalidate our notion of the | |
10229 | current thread. */ | |
47f8a51d | 10230 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 10231 | |
8020350c | 10232 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 | 10233 | generic_mourn_inferior (); |
2d717e4f | 10234 | } |
c906108c | 10235 | |
57810aa7 | 10236 | bool |
f6ac5f3d | 10237 | extended_remote_target::supports_disable_randomization () |
03583c20 | 10238 | { |
4082afcc | 10239 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
10240 | } |
10241 | ||
6b8edb51 PA |
10242 | void |
10243 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
10244 | { |
10245 | struct remote_state *rs = get_remote_state (); | |
10246 | char *reply; | |
10247 | ||
8d64371b TT |
10248 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
10249 | "QDisableRandomization:%x", val); | |
03583c20 | 10250 | putpkt (rs->buf); |
b6bb3468 | 10251 | reply = remote_get_noisy_reply (); |
03583c20 UW |
10252 | if (*reply == '\0') |
10253 | error (_("Target does not support QDisableRandomization.")); | |
10254 | if (strcmp (reply, "OK") != 0) | |
10255 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
10256 | } | |
10257 | ||
6b8edb51 PA |
10258 | int |
10259 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
10260 | { |
10261 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 10262 | int len; |
94585166 | 10263 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 10264 | |
2d717e4f DJ |
10265 | /* If the user has disabled vRun support, or we have detected that |
10266 | support is not available, do not try it. */ | |
4082afcc | 10267 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 10268 | return -1; |
424163ea | 10269 | |
8d64371b TT |
10270 | strcpy (rs->buf.data (), "vRun;"); |
10271 | len = strlen (rs->buf.data ()); | |
c906108c | 10272 | |
2d717e4f DJ |
10273 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
10274 | error (_("Remote file name too long for run packet")); | |
8d64371b | 10275 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf.data () + len, |
9f1b45b0 | 10276 | strlen (remote_exec_file)); |
2d717e4f | 10277 | |
7c5ded6a | 10278 | if (!args.empty ()) |
2d717e4f | 10279 | { |
2d717e4f | 10280 | int i; |
2d717e4f | 10281 | |
773a1edc | 10282 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
10283 | for (i = 0; argv[i] != NULL; i++) |
10284 | { | |
10285 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
10286 | error (_("Argument list too long for run packet")); | |
10287 | rs->buf[len++] = ';'; | |
8d64371b | 10288 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf.data () + len, |
9f1b45b0 | 10289 | strlen (argv[i])); |
2d717e4f | 10290 | } |
2d717e4f DJ |
10291 | } |
10292 | ||
10293 | rs->buf[len++] = '\0'; | |
10294 | ||
10295 | putpkt (rs->buf); | |
8d64371b | 10296 | getpkt (&rs->buf, 0); |
2d717e4f | 10297 | |
4082afcc | 10298 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 10299 | { |
4082afcc | 10300 | case PACKET_OK: |
3405876a | 10301 | /* We have a wait response. All is well. */ |
2d717e4f | 10302 | return 0; |
4082afcc PA |
10303 | case PACKET_UNKNOWN: |
10304 | return -1; | |
10305 | case PACKET_ERROR: | |
2d717e4f DJ |
10306 | if (remote_exec_file[0] == '\0') |
10307 | error (_("Running the default executable on the remote target failed; " | |
10308 | "try \"set remote exec-file\"?")); | |
10309 | else | |
10310 | error (_("Running \"%s\" on the remote target failed"), | |
10311 | remote_exec_file); | |
4082afcc PA |
10312 | default: |
10313 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 10314 | } |
c906108c SS |
10315 | } |
10316 | ||
0a2dde4a SDJ |
10317 | /* Helper function to send set/unset environment packets. ACTION is |
10318 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
10319 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
10320 | sent. */ | |
10321 | ||
6b8edb51 PA |
10322 | void |
10323 | remote_target::send_environment_packet (const char *action, | |
10324 | const char *packet, | |
10325 | const char *value) | |
0a2dde4a | 10326 | { |
6b8edb51 PA |
10327 | remote_state *rs = get_remote_state (); |
10328 | ||
0a2dde4a SDJ |
10329 | /* Convert the environment variable to an hex string, which |
10330 | is the best format to be transmitted over the wire. */ | |
10331 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
10332 | strlen (value)); | |
10333 | ||
8d64371b | 10334 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
0a2dde4a SDJ |
10335 | "%s:%s", packet, encoded_value.c_str ()); |
10336 | ||
10337 | putpkt (rs->buf); | |
8d64371b TT |
10338 | getpkt (&rs->buf, 0); |
10339 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10340 | warning (_("Unable to %s environment variable '%s' on remote."), |
10341 | action, value); | |
10342 | } | |
10343 | ||
10344 | /* Helper function to handle the QEnvironment* packets. */ | |
10345 | ||
6b8edb51 PA |
10346 | void |
10347 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 10348 | { |
6b8edb51 PA |
10349 | remote_state *rs = get_remote_state (); |
10350 | ||
0a2dde4a SDJ |
10351 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
10352 | { | |
10353 | putpkt ("QEnvironmentReset"); | |
8d64371b TT |
10354 | getpkt (&rs->buf, 0); |
10355 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10356 | warning (_("Unable to reset environment on remote.")); |
10357 | } | |
10358 | ||
10359 | gdb_environ *e = ¤t_inferior ()->environment; | |
10360 | ||
10361 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
10362 | for (const std::string &el : e->user_set_env ()) | |
6b8edb51 | 10363 | send_environment_packet ("set", "QEnvironmentHexEncoded", |
0a2dde4a SDJ |
10364 | el.c_str ()); |
10365 | ||
10366 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
10367 | for (const std::string &el : e->user_unset_env ()) | |
6b8edb51 | 10368 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
10369 | } |
10370 | ||
bc3b087d SDJ |
10371 | /* Helper function to set the current working directory for the |
10372 | inferior in the remote target. */ | |
10373 | ||
6b8edb51 PA |
10374 | void |
10375 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d SDJ |
10376 | { |
10377 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
10378 | { | |
10379 | const char *inferior_cwd = get_inferior_cwd (); | |
6b8edb51 | 10380 | remote_state *rs = get_remote_state (); |
bc3b087d SDJ |
10381 | |
10382 | if (inferior_cwd != NULL) | |
10383 | { | |
10384 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
10385 | strlen (inferior_cwd)); | |
10386 | ||
8d64371b | 10387 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10388 | "QSetWorkingDir:%s", hexpath.c_str ()); |
10389 | } | |
10390 | else | |
10391 | { | |
10392 | /* An empty inferior_cwd means that the user wants us to | |
10393 | reset the remote server's inferior's cwd. */ | |
8d64371b | 10394 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10395 | "QSetWorkingDir:"); |
10396 | } | |
10397 | ||
10398 | putpkt (rs->buf); | |
8d64371b | 10399 | getpkt (&rs->buf, 0); |
bc3b087d SDJ |
10400 | if (packet_ok (rs->buf, |
10401 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
10402 | != PACKET_OK) | |
10403 | error (_("\ | |
10404 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10405 | directory: %s"), | |
8d64371b | 10406 | rs->buf.data ()); |
bc3b087d SDJ |
10407 | |
10408 | } | |
10409 | } | |
10410 | ||
2d717e4f DJ |
10411 | /* In the extended protocol we want to be able to do things like |
10412 | "run" and have them basically work as expected. So we need | |
10413 | a special create_inferior function. We support changing the | |
10414 | executable file and the command line arguments, but not the | |
10415 | environment. */ | |
10416 | ||
f6ac5f3d PA |
10417 | void |
10418 | extended_remote_target::create_inferior (const char *exec_file, | |
10419 | const std::string &args, | |
10420 | char **env, int from_tty) | |
43ff13b4 | 10421 | { |
3405876a PA |
10422 | int run_worked; |
10423 | char *stop_reply; | |
10424 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10425 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10426 | |
43ff13b4 | 10427 | /* If running asynchronously, register the target file descriptor |
23860348 | 10428 | with the event loop. */ |
75c99385 | 10429 | if (target_can_async_p ()) |
6a3753b3 | 10430 | target_async (1); |
43ff13b4 | 10431 | |
03583c20 | 10432 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10433 | if (supports_disable_randomization ()) |
03583c20 UW |
10434 | extended_remote_disable_randomization (disable_randomization); |
10435 | ||
aefd8b33 SDJ |
10436 | /* If startup-with-shell is on, we inform gdbserver to start the |
10437 | remote inferior using a shell. */ | |
10438 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
10439 | { | |
8d64371b | 10440 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
aefd8b33 SDJ |
10441 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); |
10442 | putpkt (rs->buf); | |
8d64371b TT |
10443 | getpkt (&rs->buf, 0); |
10444 | if (strcmp (rs->buf.data (), "OK") != 0) | |
aefd8b33 SDJ |
10445 | error (_("\ |
10446 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
8d64371b | 10447 | rs->buf.data ()); |
aefd8b33 SDJ |
10448 | } |
10449 | ||
6b8edb51 | 10450 | extended_remote_environment_support (); |
0a2dde4a | 10451 | |
6b8edb51 | 10452 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10453 | |
43ff13b4 | 10454 | /* Now restart the remote server. */ |
3405876a PA |
10455 | run_worked = extended_remote_run (args) != -1; |
10456 | if (!run_worked) | |
2d717e4f DJ |
10457 | { |
10458 | /* vRun was not supported. Fail if we need it to do what the | |
10459 | user requested. */ | |
10460 | if (remote_exec_file[0]) | |
10461 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10462 | if (!args.empty ()) |
65e65158 | 10463 | error (_("Remote target does not support \"set args\" or run ARGS")); |
43ff13b4 | 10464 | |
2d717e4f DJ |
10465 | /* Fall back to "R". */ |
10466 | extended_remote_restart (); | |
10467 | } | |
424163ea | 10468 | |
3405876a | 10469 | /* vRun's success return is a stop reply. */ |
8d64371b | 10470 | stop_reply = run_worked ? rs->buf.data () : NULL; |
3405876a | 10471 | add_current_inferior_and_thread (stop_reply); |
c0a2216e | 10472 | |
2d717e4f DJ |
10473 | /* Get updated offsets, if the stub uses qOffsets. */ |
10474 | get_offsets (); | |
2d717e4f | 10475 | } |
c906108c | 10476 | \f |
c5aa993b | 10477 | |
b775012e LM |
10478 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10479 | the list of conditions (in agent expression bytecode format), if any, the | |
10480 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10481 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10482 | |
10483 | static int | |
10484 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10485 | struct bp_target_info *bp_tgt, char *buf, |
10486 | char *buf_end) | |
b775012e | 10487 | { |
3cde5c42 | 10488 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10489 | return 0; |
10490 | ||
10491 | buf += strlen (buf); | |
bba74b36 | 10492 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10493 | buf++; |
10494 | ||
83621223 | 10495 | /* Send conditions to the target. */ |
d538e36d | 10496 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10497 | { |
bba74b36 | 10498 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10499 | buf += strlen (buf); |
3cde5c42 | 10500 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10501 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10502 | *buf = '\0'; | |
10503 | } | |
b775012e LM |
10504 | return 0; |
10505 | } | |
10506 | ||
d3ce09f5 SS |
10507 | static void |
10508 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10509 | struct bp_target_info *bp_tgt, char *buf) | |
10510 | { | |
3cde5c42 | 10511 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10512 | return; |
10513 | ||
10514 | buf += strlen (buf); | |
10515 | ||
10516 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10517 | buf += strlen (buf); | |
10518 | ||
10519 | /* Concatenate all the agent expressions that are commands into the | |
10520 | cmds parameter. */ | |
df97be55 | 10521 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10522 | { |
10523 | sprintf (buf, "X%x,", aexpr->len); | |
10524 | buf += strlen (buf); | |
3cde5c42 | 10525 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10526 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10527 | *buf = '\0'; | |
10528 | } | |
d3ce09f5 SS |
10529 | } |
10530 | ||
8181d85f DJ |
10531 | /* Insert a breakpoint. On targets that have software breakpoint |
10532 | support, we ask the remote target to do the work; on targets | |
10533 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10534 | |
f6ac5f3d PA |
10535 | int |
10536 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10537 | struct bp_target_info *bp_tgt) | |
c906108c | 10538 | { |
d471ea57 AC |
10539 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10540 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10541 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10542 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10543 | |
4082afcc | 10544 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10545 | { |
0d5ed153 | 10546 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10547 | struct remote_state *rs; |
bba74b36 | 10548 | char *p, *endbuf; |
4fff2411 | 10549 | |
28439a30 PA |
10550 | /* Make sure the remote is pointing at the right process, if |
10551 | necessary. */ | |
10552 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10553 | set_general_process (); | |
10554 | ||
4fff2411 | 10555 | rs = get_remote_state (); |
8d64371b TT |
10556 | p = rs->buf.data (); |
10557 | endbuf = p + get_remote_packet_size (); | |
802188a7 | 10558 | |
96baa820 JM |
10559 | *(p++) = 'Z'; |
10560 | *(p++) = '0'; | |
10561 | *(p++) = ','; | |
7c0f6dcc | 10562 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10563 | p += hexnumstr (p, addr); |
579c6ad9 | 10564 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10565 | |
f6ac5f3d | 10566 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10567 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10568 | |
f6ac5f3d | 10569 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10570 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10571 | ||
6d820c5c | 10572 | putpkt (rs->buf); |
8d64371b | 10573 | getpkt (&rs->buf, 0); |
96baa820 | 10574 | |
6d820c5c | 10575 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10576 | { |
d471ea57 AC |
10577 | case PACKET_ERROR: |
10578 | return -1; | |
10579 | case PACKET_OK: | |
10580 | return 0; | |
10581 | case PACKET_UNKNOWN: | |
10582 | break; | |
96baa820 JM |
10583 | } |
10584 | } | |
c906108c | 10585 | |
0000e5cc PA |
10586 | /* If this breakpoint has target-side commands but this stub doesn't |
10587 | support Z0 packets, throw error. */ | |
3cde5c42 | 10588 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10589 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10590 | Target doesn't support breakpoints that have target side commands.")); | |
10591 | ||
f6ac5f3d | 10592 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10593 | } |
10594 | ||
f6ac5f3d PA |
10595 | int |
10596 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10597 | struct bp_target_info *bp_tgt, | |
10598 | enum remove_bp_reason reason) | |
c906108c | 10599 | { |
8181d85f | 10600 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10601 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10602 | |
4082afcc | 10603 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10604 | { |
8d64371b TT |
10605 | char *p = rs->buf.data (); |
10606 | char *endbuf = p + get_remote_packet_size (); | |
802188a7 | 10607 | |
28439a30 PA |
10608 | /* Make sure the remote is pointing at the right process, if |
10609 | necessary. */ | |
10610 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10611 | set_general_process (); | |
10612 | ||
96baa820 JM |
10613 | *(p++) = 'z'; |
10614 | *(p++) = '0'; | |
10615 | *(p++) = ','; | |
10616 | ||
8181d85f DJ |
10617 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10618 | p += hexnumstr (p, addr); | |
579c6ad9 | 10619 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10620 | |
6d820c5c | 10621 | putpkt (rs->buf); |
8d64371b | 10622 | getpkt (&rs->buf, 0); |
96baa820 | 10623 | |
6d820c5c | 10624 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10625 | } |
10626 | ||
f6ac5f3d | 10627 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10628 | } |
10629 | ||
f486487f | 10630 | static enum Z_packet_type |
d471ea57 AC |
10631 | watchpoint_to_Z_packet (int type) |
10632 | { | |
10633 | switch (type) | |
10634 | { | |
10635 | case hw_write: | |
bb858e6a | 10636 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10637 | break; |
10638 | case hw_read: | |
bb858e6a | 10639 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10640 | break; |
10641 | case hw_access: | |
bb858e6a | 10642 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10643 | break; |
10644 | default: | |
8e65ff28 | 10645 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10646 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10647 | } |
10648 | } | |
10649 | ||
f6ac5f3d PA |
10650 | int |
10651 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10652 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10653 | { |
d01949b6 | 10654 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10655 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10656 | char *p; |
d471ea57 | 10657 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10658 | |
4082afcc | 10659 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10660 | return 1; |
802188a7 | 10661 | |
28439a30 PA |
10662 | /* Make sure the remote is pointing at the right process, if |
10663 | necessary. */ | |
10664 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10665 | set_general_process (); | |
10666 | ||
8d64371b TT |
10667 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "Z%x,", packet); |
10668 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10669 | addr = remote_address_masked (addr); |
10670 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10671 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10672 | |
6d820c5c | 10673 | putpkt (rs->buf); |
8d64371b | 10674 | getpkt (&rs->buf, 0); |
96baa820 | 10675 | |
6d820c5c | 10676 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10677 | { |
10678 | case PACKET_ERROR: | |
d471ea57 | 10679 | return -1; |
85d721b8 PA |
10680 | case PACKET_UNKNOWN: |
10681 | return 1; | |
d471ea57 AC |
10682 | case PACKET_OK: |
10683 | return 0; | |
10684 | } | |
8e65ff28 | 10685 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10686 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10687 | } |
10688 | ||
57810aa7 | 10689 | bool |
f6ac5f3d PA |
10690 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10691 | CORE_ADDR start, int length) | |
283002cf MR |
10692 | { |
10693 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10694 | ||
10695 | return diff < length; | |
10696 | } | |
10697 | ||
d471ea57 | 10698 | |
f6ac5f3d PA |
10699 | int |
10700 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10701 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10702 | { |
d01949b6 | 10703 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10704 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10705 | char *p; |
d471ea57 AC |
10706 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10707 | ||
4082afcc | 10708 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10709 | return -1; |
802188a7 | 10710 | |
28439a30 PA |
10711 | /* Make sure the remote is pointing at the right process, if |
10712 | necessary. */ | |
10713 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10714 | set_general_process (); | |
10715 | ||
8d64371b TT |
10716 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "z%x,", packet); |
10717 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10718 | addr = remote_address_masked (addr); |
10719 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10720 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c | 10721 | putpkt (rs->buf); |
8d64371b | 10722 | getpkt (&rs->buf, 0); |
96baa820 | 10723 | |
6d820c5c | 10724 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10725 | { |
10726 | case PACKET_ERROR: | |
10727 | case PACKET_UNKNOWN: | |
10728 | return -1; | |
10729 | case PACKET_OK: | |
10730 | return 0; | |
10731 | } | |
8e65ff28 | 10732 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10733 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10734 | } |
10735 | ||
3c3bea1c | 10736 | |
60fcc1c3 TT |
10737 | static int remote_hw_watchpoint_limit = -1; |
10738 | static int remote_hw_watchpoint_length_limit = -1; | |
10739 | static int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 10740 | |
f6ac5f3d PA |
10741 | int |
10742 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10743 | { |
10744 | if (remote_hw_watchpoint_length_limit == 0) | |
10745 | return 0; | |
10746 | else if (remote_hw_watchpoint_length_limit < 0) | |
10747 | return 1; | |
10748 | else if (len <= remote_hw_watchpoint_length_limit) | |
10749 | return 1; | |
10750 | else | |
10751 | return 0; | |
10752 | } | |
10753 | ||
f6ac5f3d PA |
10754 | int |
10755 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10756 | { |
3c3bea1c GS |
10757 | if (type == bp_hardware_breakpoint) |
10758 | { | |
10759 | if (remote_hw_breakpoint_limit == 0) | |
10760 | return 0; | |
501eef12 AC |
10761 | else if (remote_hw_breakpoint_limit < 0) |
10762 | return 1; | |
3c3bea1c GS |
10763 | else if (cnt <= remote_hw_breakpoint_limit) |
10764 | return 1; | |
10765 | } | |
10766 | else | |
10767 | { | |
10768 | if (remote_hw_watchpoint_limit == 0) | |
10769 | return 0; | |
501eef12 AC |
10770 | else if (remote_hw_watchpoint_limit < 0) |
10771 | return 1; | |
3c3bea1c GS |
10772 | else if (ot) |
10773 | return -1; | |
10774 | else if (cnt <= remote_hw_watchpoint_limit) | |
10775 | return 1; | |
10776 | } | |
10777 | return -1; | |
10778 | } | |
10779 | ||
f7e6eed5 PA |
10780 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10781 | ||
57810aa7 | 10782 | bool |
f6ac5f3d | 10783 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10784 | { |
799a2abe | 10785 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10786 | |
799a2abe | 10787 | return (thread->priv != NULL |
7aabaf9d SM |
10788 | && (get_remote_thread_info (thread)->stop_reason |
10789 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10790 | } |
10791 | ||
10792 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10793 | remote. */ | |
10794 | ||
57810aa7 | 10795 | bool |
f6ac5f3d | 10796 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10797 | { |
f7e6eed5 PA |
10798 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10799 | } | |
10800 | ||
10801 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10802 | ||
57810aa7 | 10803 | bool |
f6ac5f3d | 10804 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10805 | { |
799a2abe | 10806 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10807 | |
799a2abe | 10808 | return (thread->priv != NULL |
7aabaf9d SM |
10809 | && (get_remote_thread_info (thread)->stop_reason |
10810 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10811 | } |
10812 | ||
10813 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10814 | remote. */ | |
10815 | ||
57810aa7 | 10816 | bool |
f6ac5f3d | 10817 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10818 | { |
f7e6eed5 PA |
10819 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10820 | } | |
10821 | ||
57810aa7 | 10822 | bool |
f6ac5f3d | 10823 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10824 | { |
799a2abe | 10825 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10826 | |
799a2abe | 10827 | return (thread->priv != NULL |
7aabaf9d SM |
10828 | && (get_remote_thread_info (thread)->stop_reason |
10829 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10830 | } |
10831 | ||
57810aa7 | 10832 | bool |
f6ac5f3d | 10833 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10834 | { |
799a2abe | 10835 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10836 | |
799a2abe | 10837 | if (thread->priv != NULL |
7aabaf9d SM |
10838 | && (get_remote_thread_info (thread)->stop_reason |
10839 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10840 | { |
7aabaf9d | 10841 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10842 | return true; |
4aa7a7f5 JJ |
10843 | } |
10844 | ||
57810aa7 | 10845 | return false; |
3c3bea1c GS |
10846 | } |
10847 | ||
10848 | ||
f6ac5f3d PA |
10849 | int |
10850 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10851 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10852 | { |
0d5ed153 | 10853 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10854 | struct remote_state *rs; |
bba74b36 | 10855 | char *p, *endbuf; |
dd61ec5c | 10856 | char *message; |
3c3bea1c | 10857 | |
4082afcc | 10858 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10859 | return -1; |
2bc416ba | 10860 | |
28439a30 PA |
10861 | /* Make sure the remote is pointing at the right process, if |
10862 | necessary. */ | |
10863 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10864 | set_general_process (); | |
10865 | ||
4fff2411 | 10866 | rs = get_remote_state (); |
8d64371b TT |
10867 | p = rs->buf.data (); |
10868 | endbuf = p + get_remote_packet_size (); | |
4fff2411 | 10869 | |
96baa820 JM |
10870 | *(p++) = 'Z'; |
10871 | *(p++) = '1'; | |
10872 | *(p++) = ','; | |
802188a7 | 10873 | |
0d5ed153 | 10874 | addr = remote_address_masked (addr); |
96baa820 | 10875 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10876 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10877 | |
f6ac5f3d | 10878 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10879 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10880 | |
f6ac5f3d | 10881 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10882 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10883 | ||
6d820c5c | 10884 | putpkt (rs->buf); |
8d64371b | 10885 | getpkt (&rs->buf, 0); |
96baa820 | 10886 | |
6d820c5c | 10887 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10888 | { |
10889 | case PACKET_ERROR: | |
dd61ec5c | 10890 | if (rs->buf[1] == '.') |
dda83cd7 SM |
10891 | { |
10892 | message = strchr (&rs->buf[2], '.'); | |
10893 | if (message) | |
10894 | error (_("Remote failure reply: %s"), message + 1); | |
10895 | } | |
dd61ec5c | 10896 | return -1; |
d471ea57 AC |
10897 | case PACKET_UNKNOWN: |
10898 | return -1; | |
10899 | case PACKET_OK: | |
10900 | return 0; | |
10901 | } | |
8e65ff28 | 10902 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10903 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10904 | } |
10905 | ||
d471ea57 | 10906 | |
f6ac5f3d PA |
10907 | int |
10908 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10909 | struct bp_target_info *bp_tgt) | |
96baa820 | 10910 | { |
8181d85f | 10911 | CORE_ADDR addr; |
d01949b6 | 10912 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
10913 | char *p = rs->buf.data (); |
10914 | char *endbuf = p + get_remote_packet_size (); | |
c8189ed1 | 10915 | |
4082afcc | 10916 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10917 | return -1; |
802188a7 | 10918 | |
28439a30 PA |
10919 | /* Make sure the remote is pointing at the right process, if |
10920 | necessary. */ | |
10921 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10922 | set_general_process (); | |
10923 | ||
96baa820 JM |
10924 | *(p++) = 'z'; |
10925 | *(p++) = '1'; | |
10926 | *(p++) = ','; | |
802188a7 | 10927 | |
8181d85f | 10928 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10929 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10930 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10931 | |
6d820c5c | 10932 | putpkt (rs->buf); |
8d64371b | 10933 | getpkt (&rs->buf, 0); |
802188a7 | 10934 | |
6d820c5c | 10935 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10936 | { |
10937 | case PACKET_ERROR: | |
10938 | case PACKET_UNKNOWN: | |
10939 | return -1; | |
10940 | case PACKET_OK: | |
10941 | return 0; | |
10942 | } | |
8e65ff28 | 10943 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10944 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10945 | } |
96baa820 | 10946 | |
4a5e7a5b PA |
10947 | /* Verify memory using the "qCRC:" request. */ |
10948 | ||
f6ac5f3d PA |
10949 | int |
10950 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
10951 | { |
10952 | struct remote_state *rs = get_remote_state (); | |
10953 | unsigned long host_crc, target_crc; | |
10954 | char *tmp; | |
10955 | ||
936d2992 PA |
10956 | /* It doesn't make sense to use qCRC if the remote target is |
10957 | connected but not running. */ | |
55f6301a TT |
10958 | if (target_has_execution () |
10959 | && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
936d2992 PA |
10960 | { |
10961 | enum packet_result result; | |
28439a30 | 10962 | |
936d2992 PA |
10963 | /* Make sure the remote is pointing at the right process. */ |
10964 | set_general_process (); | |
4a5e7a5b | 10965 | |
936d2992 | 10966 | /* FIXME: assumes lma can fit into long. */ |
8d64371b | 10967 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qCRC:%lx,%lx", |
936d2992 PA |
10968 | (long) lma, (long) size); |
10969 | putpkt (rs->buf); | |
4a5e7a5b | 10970 | |
936d2992 PA |
10971 | /* Be clever; compute the host_crc before waiting for target |
10972 | reply. */ | |
10973 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10974 | ||
8d64371b | 10975 | getpkt (&rs->buf, 0); |
4a5e7a5b | 10976 | |
936d2992 PA |
10977 | result = packet_ok (rs->buf, |
10978 | &remote_protocol_packets[PACKET_qCRC]); | |
10979 | if (result == PACKET_ERROR) | |
10980 | return -1; | |
10981 | else if (result == PACKET_OK) | |
10982 | { | |
10983 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10984 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10985 | |
936d2992 PA |
10986 | return (host_crc == target_crc); |
10987 | } | |
10988 | } | |
4a5e7a5b | 10989 | |
f6ac5f3d | 10990 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
10991 | } |
10992 | ||
c906108c SS |
10993 | /* compare-sections command |
10994 | ||
10995 | With no arguments, compares each loadable section in the exec bfd | |
10996 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10997 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10998 | |
c906108c | 10999 | static void |
ac88e2de | 11000 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
11001 | { |
11002 | asection *s; | |
ce359b09 | 11003 | const char *sectname; |
c906108c SS |
11004 | bfd_size_type size; |
11005 | bfd_vma lma; | |
11006 | int matched = 0; | |
11007 | int mismatched = 0; | |
4a5e7a5b | 11008 | int res; |
95cf3b38 | 11009 | int read_only = 0; |
c906108c | 11010 | |
7e10abd1 | 11011 | if (!current_program_space->exec_bfd ()) |
8a3fe4f8 | 11012 | error (_("command cannot be used without an exec file")); |
c906108c | 11013 | |
95cf3b38 DT |
11014 | if (args != NULL && strcmp (args, "-r") == 0) |
11015 | { | |
11016 | read_only = 1; | |
11017 | args = NULL; | |
11018 | } | |
11019 | ||
7e10abd1 | 11020 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
c906108c SS |
11021 | { |
11022 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 11023 | continue; /* Skip non-loadable section. */ |
c906108c | 11024 | |
95cf3b38 DT |
11025 | if (read_only && (s->flags & SEC_READONLY) == 0) |
11026 | continue; /* Skip writeable sections */ | |
11027 | ||
fd361982 | 11028 | size = bfd_section_size (s); |
c906108c | 11029 | if (size == 0) |
0df8b418 | 11030 | continue; /* Skip zero-length section. */ |
c906108c | 11031 | |
fd361982 | 11032 | sectname = bfd_section_name (s); |
c906108c | 11033 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 11034 | continue; /* Not the section selected by user. */ |
c906108c | 11035 | |
0df8b418 | 11036 | matched = 1; /* Do this section. */ |
c906108c | 11037 | lma = s->lma; |
c906108c | 11038 | |
b80406ac | 11039 | gdb::byte_vector sectdata (size); |
7e10abd1 TT |
11040 | bfd_get_section_contents (current_program_space->exec_bfd (), s, |
11041 | sectdata.data (), 0, size); | |
c906108c | 11042 | |
b80406ac | 11043 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
11044 | |
11045 | if (res == -1) | |
5af949e3 | 11046 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
11047 | paddress (target_gdbarch (), lma), |
11048 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 11049 | |
5af949e3 | 11050 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
11051 | paddress (target_gdbarch (), lma), |
11052 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 11053 | if (res) |
c906108c SS |
11054 | printf_filtered ("matched.\n"); |
11055 | else | |
c5aa993b JM |
11056 | { |
11057 | printf_filtered ("MIS-MATCHED!\n"); | |
11058 | mismatched++; | |
11059 | } | |
c906108c SS |
11060 | } |
11061 | if (mismatched > 0) | |
936d2992 | 11062 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 11063 | the loaded file\n")); |
c906108c | 11064 | if (args && !matched) |
a3f17187 | 11065 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
11066 | } |
11067 | ||
0e7f50da UW |
11068 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
11069 | into remote target. The number of bytes written to the remote | |
11070 | target is returned, or -1 for error. */ | |
11071 | ||
6b8edb51 PA |
11072 | target_xfer_status |
11073 | remote_target::remote_write_qxfer (const char *object_name, | |
11074 | const char *annex, const gdb_byte *writebuf, | |
11075 | ULONGEST offset, LONGEST len, | |
11076 | ULONGEST *xfered_len, | |
11077 | struct packet_config *packet) | |
0e7f50da UW |
11078 | { |
11079 | int i, buf_len; | |
11080 | ULONGEST n; | |
0e7f50da UW |
11081 | struct remote_state *rs = get_remote_state (); |
11082 | int max_size = get_memory_write_packet_size (); | |
11083 | ||
7cc244de | 11084 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 11085 | return TARGET_XFER_E_IO; |
0e7f50da UW |
11086 | |
11087 | /* Insert header. */ | |
8d64371b | 11088 | i = snprintf (rs->buf.data (), max_size, |
0e7f50da UW |
11089 | "qXfer:%s:write:%s:%s:", |
11090 | object_name, annex ? annex : "", | |
11091 | phex_nz (offset, sizeof offset)); | |
11092 | max_size -= (i + 1); | |
11093 | ||
11094 | /* Escape as much data as fits into rs->buf. */ | |
11095 | buf_len = remote_escape_output | |
8d64371b | 11096 | (writebuf, len, 1, (gdb_byte *) rs->buf.data () + i, &max_size, max_size); |
0e7f50da | 11097 | |
8d64371b TT |
11098 | if (putpkt_binary (rs->buf.data (), i + buf_len) < 0 |
11099 | || getpkt_sane (&rs->buf, 0) < 0 | |
0e7f50da | 11100 | || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 11101 | return TARGET_XFER_E_IO; |
0e7f50da | 11102 | |
8d64371b | 11103 | unpack_varlen_hex (rs->buf.data (), &n); |
9b409511 YQ |
11104 | |
11105 | *xfered_len = n; | |
92ffd475 | 11106 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
11107 | } |
11108 | ||
0876f84a DJ |
11109 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
11110 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
11111 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
11112 | The number of bytes read may be less than LEN without indicating an | |
11113 | EOF. PACKET is checked and updated to indicate whether the remote | |
11114 | target supports this object. */ | |
11115 | ||
6b8edb51 PA |
11116 | target_xfer_status |
11117 | remote_target::remote_read_qxfer (const char *object_name, | |
11118 | const char *annex, | |
11119 | gdb_byte *readbuf, ULONGEST offset, | |
11120 | LONGEST len, | |
11121 | ULONGEST *xfered_len, | |
11122 | struct packet_config *packet) | |
0876f84a | 11123 | { |
0876f84a | 11124 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
11125 | LONGEST i, n, packet_len; |
11126 | ||
7cc244de | 11127 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 11128 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11129 | |
11130 | /* Check whether we've cached an end-of-object packet that matches | |
11131 | this request. */ | |
8e88304f | 11132 | if (rs->finished_object) |
0876f84a | 11133 | { |
8e88304f TT |
11134 | if (strcmp (object_name, rs->finished_object) == 0 |
11135 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
11136 | && offset == rs->finished_offset) | |
9b409511 YQ |
11137 | return TARGET_XFER_EOF; |
11138 | ||
0876f84a DJ |
11139 | |
11140 | /* Otherwise, we're now reading something different. Discard | |
11141 | the cache. */ | |
8e88304f TT |
11142 | xfree (rs->finished_object); |
11143 | xfree (rs->finished_annex); | |
11144 | rs->finished_object = NULL; | |
11145 | rs->finished_annex = NULL; | |
0876f84a DJ |
11146 | } |
11147 | ||
11148 | /* Request only enough to fit in a single packet. The actual data | |
11149 | may not, since we don't know how much of it will need to be escaped; | |
11150 | the target is free to respond with slightly less data. We subtract | |
11151 | five to account for the response type and the protocol frame. */ | |
768adc05 | 11152 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
8d64371b TT |
11153 | snprintf (rs->buf.data (), get_remote_packet_size () - 4, |
11154 | "qXfer:%s:read:%s:%s,%s", | |
0876f84a DJ |
11155 | object_name, annex ? annex : "", |
11156 | phex_nz (offset, sizeof offset), | |
11157 | phex_nz (n, sizeof n)); | |
11158 | i = putpkt (rs->buf); | |
11159 | if (i < 0) | |
2ed4b548 | 11160 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11161 | |
11162 | rs->buf[0] = '\0'; | |
8d64371b | 11163 | packet_len = getpkt_sane (&rs->buf, 0); |
0876f84a | 11164 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 11165 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11166 | |
11167 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8d64371b | 11168 | error (_("Unknown remote qXfer reply: %s"), rs->buf.data ()); |
0876f84a DJ |
11169 | |
11170 | /* 'm' means there is (or at least might be) more data after this | |
11171 | batch. That does not make sense unless there's at least one byte | |
11172 | of data in this reply. */ | |
11173 | if (rs->buf[0] == 'm' && packet_len == 1) | |
11174 | error (_("Remote qXfer reply contained no data.")); | |
11175 | ||
11176 | /* Got some data. */ | |
8d64371b | 11177 | i = remote_unescape_input ((gdb_byte *) rs->buf.data () + 1, |
bc20a4af | 11178 | packet_len - 1, readbuf, n); |
0876f84a DJ |
11179 | |
11180 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
11181 | or possibly empty. If we have the final block of a non-empty |
11182 | object, record this fact to bypass a subsequent partial read. */ | |
11183 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 11184 | { |
8e88304f TT |
11185 | rs->finished_object = xstrdup (object_name); |
11186 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
11187 | rs->finished_offset = offset + i; | |
0876f84a DJ |
11188 | } |
11189 | ||
9b409511 YQ |
11190 | if (i == 0) |
11191 | return TARGET_XFER_EOF; | |
11192 | else | |
11193 | { | |
11194 | *xfered_len = i; | |
11195 | return TARGET_XFER_OK; | |
11196 | } | |
0876f84a DJ |
11197 | } |
11198 | ||
f6ac5f3d PA |
11199 | enum target_xfer_status |
11200 | remote_target::xfer_partial (enum target_object object, | |
11201 | const char *annex, gdb_byte *readbuf, | |
11202 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
11203 | ULONGEST *xfered_len) | |
c906108c | 11204 | { |
82f73884 | 11205 | struct remote_state *rs; |
c906108c | 11206 | int i; |
6d820c5c | 11207 | char *p2; |
1e3ff5ad | 11208 | char query_type; |
124e13d9 | 11209 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 11210 | |
e6e4e701 | 11211 | set_remote_traceframe (); |
82f73884 PA |
11212 | set_general_thread (inferior_ptid); |
11213 | ||
11214 | rs = get_remote_state (); | |
11215 | ||
b2182ed2 | 11216 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
11217 | if (object == TARGET_OBJECT_MEMORY) |
11218 | { | |
2d717e4f DJ |
11219 | /* If the remote target is connected but not running, we should |
11220 | pass this request down to a lower stratum (e.g. the executable | |
11221 | file). */ | |
55f6301a | 11222 | if (!target_has_execution ()) |
9b409511 | 11223 | return TARGET_XFER_EOF; |
2d717e4f | 11224 | |
21e3b9b9 | 11225 | if (writebuf != NULL) |
124e13d9 SM |
11226 | return remote_write_bytes (offset, writebuf, len, unit_size, |
11227 | xfered_len); | |
21e3b9b9 | 11228 | else |
6b8edb51 | 11229 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 11230 | xfered_len); |
21e3b9b9 DJ |
11231 | } |
11232 | ||
4aa995e1 PA |
11233 | /* Handle extra signal info using qxfer packets. */ |
11234 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
11235 | { | |
11236 | if (readbuf) | |
f6ac5f3d | 11237 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 11238 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
11239 | [PACKET_qXfer_siginfo_read]); |
11240 | else | |
f6ac5f3d | 11241 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 11242 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
11243 | &remote_protocol_packets |
11244 | [PACKET_qXfer_siginfo_write]); | |
11245 | } | |
11246 | ||
0fb4aa4b PA |
11247 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
11248 | { | |
11249 | if (readbuf) | |
f6ac5f3d | 11250 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 11251 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
11252 | &remote_protocol_packets |
11253 | [PACKET_qXfer_statictrace_read]); | |
11254 | else | |
2ed4b548 | 11255 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
11256 | } |
11257 | ||
a76d924d DJ |
11258 | /* Only handle flash writes. */ |
11259 | if (writebuf != NULL) | |
11260 | { | |
a76d924d DJ |
11261 | switch (object) |
11262 | { | |
11263 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 11264 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 11265 | writebuf); |
a76d924d DJ |
11266 | |
11267 | default: | |
2ed4b548 | 11268 | return TARGET_XFER_E_IO; |
a76d924d DJ |
11269 | } |
11270 | } | |
4b8a223f | 11271 | |
1e3ff5ad AC |
11272 | /* Map pre-existing objects onto letters. DO NOT do this for new |
11273 | objects!!! Instead specify new query packets. */ | |
11274 | switch (object) | |
c906108c | 11275 | { |
1e3ff5ad AC |
11276 | case TARGET_OBJECT_AVR: |
11277 | query_type = 'R'; | |
11278 | break; | |
802188a7 RM |
11279 | |
11280 | case TARGET_OBJECT_AUXV: | |
0876f84a | 11281 | gdb_assert (annex == NULL); |
f6ac5f3d | 11282 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 11283 | xfered_len, |
0876f84a | 11284 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 11285 | |
23181151 DJ |
11286 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
11287 | return remote_read_qxfer | |
f6ac5f3d | 11288 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
11289 | &remote_protocol_packets[PACKET_qXfer_features]); |
11290 | ||
cfa9d6d9 DJ |
11291 | case TARGET_OBJECT_LIBRARIES: |
11292 | return remote_read_qxfer | |
f6ac5f3d | 11293 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
11294 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
11295 | ||
2268b414 JK |
11296 | case TARGET_OBJECT_LIBRARIES_SVR4: |
11297 | return remote_read_qxfer | |
f6ac5f3d | 11298 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
11299 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
11300 | ||
fd79ecee DJ |
11301 | case TARGET_OBJECT_MEMORY_MAP: |
11302 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11303 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 11304 | xfered_len, |
fd79ecee DJ |
11305 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
11306 | ||
07e059b5 VP |
11307 | case TARGET_OBJECT_OSDATA: |
11308 | /* Should only get here if we're connected. */ | |
5d93a237 | 11309 | gdb_assert (rs->remote_desc); |
07e059b5 | 11310 | return remote_read_qxfer |
f6ac5f3d | 11311 | ("osdata", annex, readbuf, offset, len, xfered_len, |
dda83cd7 | 11312 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
07e059b5 | 11313 | |
dc146f7c VP |
11314 | case TARGET_OBJECT_THREADS: |
11315 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11316 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 11317 | xfered_len, |
dc146f7c VP |
11318 | &remote_protocol_packets[PACKET_qXfer_threads]); |
11319 | ||
b3b9301e PA |
11320 | case TARGET_OBJECT_TRACEFRAME_INFO: |
11321 | gdb_assert (annex == NULL); | |
11322 | return remote_read_qxfer | |
f6ac5f3d | 11323 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 11324 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
11325 | |
11326 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 11327 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 11328 | xfered_len, |
78d85199 | 11329 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
11330 | |
11331 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 11332 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 11333 | xfered_len, |
169081d0 TG |
11334 | &remote_protocol_packets[PACKET_qXfer_uib]); |
11335 | ||
9accd112 | 11336 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 11337 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 11338 | xfered_len, |
dda83cd7 | 11339 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9accd112 | 11340 | |
f4abbc16 | 11341 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 11342 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
11343 | len, xfered_len, |
11344 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
11345 | ||
c78fa86a | 11346 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 11347 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
11348 | len, xfered_len, |
11349 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
11350 | ||
1e3ff5ad | 11351 | default: |
2ed4b548 | 11352 | return TARGET_XFER_E_IO; |
c906108c SS |
11353 | } |
11354 | ||
0df8b418 | 11355 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 11356 | large enough let the caller deal with it. */ |
ea9c271d | 11357 | if (len < get_remote_packet_size ()) |
2ed4b548 | 11358 | return TARGET_XFER_E_IO; |
ea9c271d | 11359 | len = get_remote_packet_size (); |
1e3ff5ad | 11360 | |
23860348 | 11361 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 11362 | if (!rs->remote_desc) |
8a3fe4f8 | 11363 | error (_("remote query is only available after target open")); |
c906108c | 11364 | |
1e3ff5ad | 11365 | gdb_assert (annex != NULL); |
4b8a223f | 11366 | gdb_assert (readbuf != NULL); |
c906108c | 11367 | |
8d64371b | 11368 | p2 = rs->buf.data (); |
c906108c SS |
11369 | *p2++ = 'q'; |
11370 | *p2++ = query_type; | |
11371 | ||
23860348 MS |
11372 | /* We used one buffer char for the remote protocol q command and |
11373 | another for the query type. As the remote protocol encapsulation | |
11374 | uses 4 chars plus one extra in case we are debugging | |
11375 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
11376 | string. */ | |
c906108c | 11377 | i = 0; |
ea9c271d | 11378 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11379 | { |
1e3ff5ad AC |
11380 | /* Bad caller may have sent forbidden characters. */ |
11381 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11382 | *p2++ = annex[i]; | |
c906108c SS |
11383 | i++; |
11384 | } | |
1e3ff5ad AC |
11385 | *p2 = '\0'; |
11386 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11387 | |
6d820c5c | 11388 | i = putpkt (rs->buf); |
c5aa993b | 11389 | if (i < 0) |
2ed4b548 | 11390 | return TARGET_XFER_E_IO; |
c906108c | 11391 | |
8d64371b TT |
11392 | getpkt (&rs->buf, 0); |
11393 | strcpy ((char *) readbuf, rs->buf.data ()); | |
c906108c | 11394 | |
9b409511 | 11395 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11396 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11397 | } |
11398 | ||
09c98b44 DB |
11399 | /* Implementation of to_get_memory_xfer_limit. */ |
11400 | ||
f6ac5f3d PA |
11401 | ULONGEST |
11402 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11403 | { |
11404 | return get_memory_write_packet_size (); | |
11405 | } | |
11406 | ||
f6ac5f3d PA |
11407 | int |
11408 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11409 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11410 | CORE_ADDR *found_addrp) | |
08388c79 | 11411 | { |
f5656ead | 11412 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
11413 | struct remote_state *rs = get_remote_state (); |
11414 | int max_size = get_memory_write_packet_size (); | |
11415 | struct packet_config *packet = | |
11416 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
11417 | /* Number of packet bytes used to encode the pattern; |
11418 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11419 | int escaped_pattern_len; |
0df8b418 | 11420 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11421 | int used_pattern_len; |
11422 | int i; | |
11423 | int found; | |
11424 | ULONGEST found_addr; | |
11425 | ||
4a72de73 TT |
11426 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
11427 | { | |
11428 | return (target_read (this, TARGET_OBJECT_MEMORY, NULL, result, addr, len) | |
11429 | == len); | |
11430 | }; | |
11431 | ||
7cc244de PA |
11432 | /* Don't go to the target if we don't have to. This is done before |
11433 | checking packet_config_support to avoid the possibility that a | |
11434 | success for this edge case means the facility works in | |
11435 | general. */ | |
08388c79 DE |
11436 | if (pattern_len > search_space_len) |
11437 | return 0; | |
11438 | if (pattern_len == 0) | |
11439 | { | |
11440 | *found_addrp = start_addr; | |
11441 | return 1; | |
11442 | } | |
11443 | ||
11444 | /* If we already know the packet isn't supported, fall back to the simple | |
11445 | way of searching memory. */ | |
11446 | ||
4082afcc | 11447 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
11448 | { |
11449 | /* Target doesn't provided special support, fall back and use the | |
11450 | standard support (copy memory and do the search here). */ | |
4a72de73 | 11451 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11452 | pattern, pattern_len, found_addrp); |
11453 | } | |
11454 | ||
28439a30 PA |
11455 | /* Make sure the remote is pointing at the right process. */ |
11456 | set_general_process (); | |
11457 | ||
08388c79 | 11458 | /* Insert header. */ |
8d64371b | 11459 | i = snprintf (rs->buf.data (), max_size, |
08388c79 | 11460 | "qSearch:memory:%s;%s;", |
5af949e3 | 11461 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11462 | phex_nz (search_space_len, sizeof (search_space_len))); |
11463 | max_size -= (i + 1); | |
11464 | ||
11465 | /* Escape as much data as fits into rs->buf. */ | |
11466 | escaped_pattern_len = | |
8d64371b TT |
11467 | remote_escape_output (pattern, pattern_len, 1, |
11468 | (gdb_byte *) rs->buf.data () + i, | |
08388c79 DE |
11469 | &used_pattern_len, max_size); |
11470 | ||
11471 | /* Bail if the pattern is too large. */ | |
11472 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11473 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 | 11474 | |
8d64371b TT |
11475 | if (putpkt_binary (rs->buf.data (), i + escaped_pattern_len) < 0 |
11476 | || getpkt_sane (&rs->buf, 0) < 0 | |
08388c79 DE |
11477 | || packet_ok (rs->buf, packet) != PACKET_OK) |
11478 | { | |
11479 | /* The request may not have worked because the command is not | |
11480 | supported. If so, fall back to the simple way. */ | |
7cc244de | 11481 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 11482 | { |
4a72de73 | 11483 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11484 | pattern, pattern_len, found_addrp); |
11485 | } | |
11486 | return -1; | |
11487 | } | |
11488 | ||
11489 | if (rs->buf[0] == '0') | |
11490 | found = 0; | |
11491 | else if (rs->buf[0] == '1') | |
11492 | { | |
11493 | found = 1; | |
11494 | if (rs->buf[1] != ',') | |
8d64371b TT |
11495 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
11496 | unpack_varlen_hex (&rs->buf[2], &found_addr); | |
08388c79 DE |
11497 | *found_addrp = found_addr; |
11498 | } | |
11499 | else | |
8d64371b | 11500 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
08388c79 DE |
11501 | |
11502 | return found; | |
11503 | } | |
11504 | ||
f6ac5f3d PA |
11505 | void |
11506 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11507 | { |
d01949b6 | 11508 | struct remote_state *rs = get_remote_state (); |
8d64371b | 11509 | char *p = rs->buf.data (); |
96baa820 | 11510 | |
5d93a237 | 11511 | if (!rs->remote_desc) |
8a3fe4f8 | 11512 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11513 | |
23860348 | 11514 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11515 | if (command == NULL) |
11516 | command = ""; | |
11517 | ||
23860348 | 11518 | /* The query prefix. */ |
8d64371b TT |
11519 | strcpy (rs->buf.data (), "qRcmd,"); |
11520 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 | 11521 | |
8d64371b | 11522 | if ((strlen (rs->buf.data ()) + strlen (command) * 2 + 8/*misc*/) |
3e43a32a | 11523 | > get_remote_packet_size ()) |
8a3fe4f8 | 11524 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11525 | |
23860348 | 11526 | /* Encode the actual command. */ |
a30bf1f1 | 11527 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11528 | |
6d820c5c | 11529 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11530 | error (_("Communication problem with target.")); |
96baa820 JM |
11531 | |
11532 | /* get/display the response */ | |
11533 | while (1) | |
11534 | { | |
2e9f7625 DJ |
11535 | char *buf; |
11536 | ||
00bf0b85 | 11537 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11538 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11539 | rs->buf[0] = '\0'; |
8d64371b | 11540 | if (getpkt_sane (&rs->buf, 0) == -1) |
dda83cd7 SM |
11541 | { |
11542 | /* Timeout. Continue to (try to) read responses. | |
11543 | This is better than stopping with an error, assuming the stub | |
11544 | is still executing the (long) monitor command. | |
11545 | If needed, the user can interrupt gdb using C-c, obtaining | |
11546 | an effect similar to stop on timeout. */ | |
11547 | continue; | |
11548 | } | |
8d64371b | 11549 | buf = rs->buf.data (); |
96baa820 | 11550 | if (buf[0] == '\0') |
8a3fe4f8 | 11551 | error (_("Target does not support this command.")); |
96baa820 JM |
11552 | if (buf[0] == 'O' && buf[1] != 'K') |
11553 | { | |
23860348 | 11554 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11555 | continue; |
11556 | } | |
11557 | if (strcmp (buf, "OK") == 0) | |
11558 | break; | |
7be570e7 JM |
11559 | if (strlen (buf) == 3 && buf[0] == 'E' |
11560 | && isdigit (buf[1]) && isdigit (buf[2])) | |
11561 | { | |
8a3fe4f8 | 11562 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11563 | } |
96baa820 JM |
11564 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11565 | { | |
11566 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11567 | |
96baa820 JM |
11568 | fputc_unfiltered (c, outbuf); |
11569 | } | |
11570 | break; | |
11571 | } | |
11572 | } | |
11573 | ||
f6ac5f3d PA |
11574 | std::vector<mem_region> |
11575 | remote_target::memory_map () | |
fd79ecee | 11576 | { |
a664f67e | 11577 | std::vector<mem_region> result; |
9018be22 | 11578 | gdb::optional<gdb::char_vector> text |
328d42d8 SM |
11579 | = target_read_stralloc (current_inferior ()->top_target (), |
11580 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
fd79ecee DJ |
11581 | |
11582 | if (text) | |
9018be22 | 11583 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11584 | |
11585 | return result; | |
11586 | } | |
11587 | ||
c906108c | 11588 | static void |
ac88e2de | 11589 | packet_command (const char *args, int from_tty) |
c906108c | 11590 | { |
6b8edb51 | 11591 | remote_target *remote = get_current_remote_target (); |
c906108c | 11592 | |
6b8edb51 | 11593 | if (remote == nullptr) |
8a3fe4f8 | 11594 | error (_("command can only be used with remote target")); |
c906108c | 11595 | |
6b8edb51 PA |
11596 | remote->packet_command (args, from_tty); |
11597 | } | |
11598 | ||
11599 | void | |
11600 | remote_target::packet_command (const char *args, int from_tty) | |
11601 | { | |
c5aa993b | 11602 | if (!args) |
8a3fe4f8 | 11603 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
11604 | |
11605 | puts_filtered ("sending: "); | |
11606 | print_packet (args); | |
11607 | puts_filtered ("\n"); | |
11608 | putpkt (args); | |
11609 | ||
6b8edb51 PA |
11610 | remote_state *rs = get_remote_state (); |
11611 | ||
8d64371b | 11612 | getpkt (&rs->buf, 0); |
c906108c | 11613 | puts_filtered ("received: "); |
8d64371b | 11614 | print_packet (rs->buf.data ()); |
c906108c SS |
11615 | puts_filtered ("\n"); |
11616 | } | |
11617 | ||
11618 | #if 0 | |
23860348 | 11619 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11620 | |
a14ed312 | 11621 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11622 | |
a14ed312 | 11623 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11624 | |
a14ed312 | 11625 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11626 | |
a14ed312 | 11627 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11628 | |
23860348 | 11629 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11630 | |
a14ed312 | 11631 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11632 | |
23860348 | 11633 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11634 | |
a14ed312 | 11635 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11636 | |
a14ed312 | 11637 | static void init_remote_threadtests (void); |
c906108c | 11638 | |
23860348 | 11639 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11640 | |
11641 | static void | |
0b39b52e | 11642 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11643 | { |
11644 | int sample_thread = SAMPLE_THREAD; | |
11645 | ||
a3f17187 | 11646 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 11647 | set_general_thread (sample_thread); |
c906108c SS |
11648 | } |
11649 | ||
11650 | ||
11651 | static void | |
0b39b52e | 11652 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11653 | { |
11654 | int sample_thread = SAMPLE_THREAD; | |
e99b03dc | 11655 | int pid = inferior_ptid.pid (); |
fd79271b | 11656 | ptid_t ptid = ptid_t (pid, sample_thread, 0); |
c906108c | 11657 | |
79d7f229 | 11658 | if (remote_thread_alive (ptid)) |
c906108c SS |
11659 | printf_filtered ("PASS: Thread alive test\n"); |
11660 | else | |
11661 | printf_filtered ("FAIL: Thread alive test\n"); | |
11662 | } | |
11663 | ||
23860348 | 11664 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11665 | |
11666 | void | |
fba45db2 | 11667 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11668 | { |
11669 | char hexid[20]; | |
11670 | ||
405feb71 | 11671 | pack_threadid (&hexid[0], ref); /* Convert thread id into hex. */ |
c906108c SS |
11672 | hexid[16] = 0; |
11673 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
11674 | } | |
11675 | ||
11676 | static void | |
0b39b52e | 11677 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11678 | { |
11679 | int startflag = 1; | |
11680 | threadref nextthread; | |
11681 | int done, result_count; | |
11682 | threadref threadlist[3]; | |
11683 | ||
11684 | printf_filtered ("Remote Threadlist test\n"); | |
11685 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
11686 | &result_count, &threadlist[0])) | |
11687 | printf_filtered ("FAIL: threadlist test\n"); | |
11688 | else | |
11689 | { | |
11690 | threadref *scan = threadlist; | |
11691 | threadref *limit = scan + result_count; | |
11692 | ||
11693 | while (scan < limit) | |
11694 | output_threadid (" thread ", scan++); | |
11695 | } | |
11696 | } | |
11697 | ||
11698 | void | |
fba45db2 | 11699 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11700 | { |
11701 | output_threadid ("Threadid: ", &info->threadid); | |
11702 | printf_filtered ("Name: %s\n ", info->shortname); | |
11703 | printf_filtered ("State: %s\n", info->display); | |
11704 | printf_filtered ("other: %s\n\n", info->more_display); | |
11705 | } | |
11706 | ||
11707 | int | |
fba45db2 | 11708 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11709 | { |
11710 | int result; | |
11711 | int set; | |
11712 | struct gdb_ext_thread_info threadinfo; | |
11713 | ||
11714 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11715 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11716 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11717 | display_thread_info (&threadinfo); | |
11718 | return result; | |
11719 | } | |
11720 | ||
11721 | static void | |
0b39b52e | 11722 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11723 | { |
11724 | int athread = SAMPLE_THREAD; | |
11725 | threadref thread; | |
11726 | int set; | |
11727 | ||
11728 | int_to_threadref (&thread, athread); | |
11729 | printf_filtered ("Remote Threadinfo test\n"); | |
11730 | if (!get_and_display_threadinfo (&thread)) | |
11731 | printf_filtered ("FAIL cannot get thread info\n"); | |
11732 | } | |
11733 | ||
11734 | static int | |
fba45db2 | 11735 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11736 | { |
11737 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11738 | return get_and_display_threadinfo (ref); | |
11739 | } | |
11740 | ||
11741 | static void | |
0b39b52e | 11742 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
11743 | { |
11744 | printf_filtered ("Remote Threadlist update test\n"); | |
11745 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11746 | } | |
11747 | ||
11748 | static void | |
11749 | init_remote_threadtests (void) | |
11750 | { | |
3e43a32a MS |
11751 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11752 | _("Fetch and print the remote list of " | |
590042fc | 11753 | "thread identifiers, one pkt only.")); |
c906108c | 11754 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
590042fc | 11755 | _("Fetch and display info about one thread.")); |
c906108c | 11756 | add_com ("tset", class_obscure, threadset_test_cmd, |
590042fc | 11757 | _("Test setting to a different thread.")); |
c906108c | 11758 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
590042fc | 11759 | _("Iterate through updating all remote thread info.")); |
c906108c | 11760 | add_com ("talive", class_obscure, threadalive_test, |
590042fc | 11761 | _("Remote thread alive test.")); |
c906108c SS |
11762 | } |
11763 | ||
11764 | #endif /* 0 */ | |
11765 | ||
a068643d | 11766 | /* Convert a thread ID to a string. */ |
f3fb8c85 | 11767 | |
a068643d | 11768 | std::string |
f6ac5f3d | 11769 | remote_target::pid_to_str (ptid_t ptid) |
f3fb8c85 | 11770 | { |
82f73884 | 11771 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11772 | |
d7e15655 | 11773 | if (ptid == null_ptid) |
7cee1e54 | 11774 | return normal_pid_to_str (ptid); |
0e998d96 | 11775 | else if (ptid.is_pid ()) |
ecd0ada5 PA |
11776 | { |
11777 | /* Printing an inferior target id. */ | |
11778 | ||
11779 | /* When multi-process extensions are off, there's no way in the | |
11780 | remote protocol to know the remote process id, if there's any | |
11781 | at all. There's one exception --- when we're connected with | |
11782 | target extended-remote, and we manually attached to a process | |
11783 | with "attach PID". We don't record anywhere a flag that | |
11784 | allows us to distinguish that case from the case of | |
11785 | connecting with extended-remote and the stub already being | |
11786 | attached to a process, and reporting yes to qAttached, hence | |
11787 | no smart special casing here. */ | |
11788 | if (!remote_multi_process_p (rs)) | |
a068643d | 11789 | return "Remote target"; |
ecd0ada5 PA |
11790 | |
11791 | return normal_pid_to_str (ptid); | |
82f73884 | 11792 | } |
ecd0ada5 | 11793 | else |
79d7f229 | 11794 | { |
d7e15655 | 11795 | if (magic_null_ptid == ptid) |
a068643d | 11796 | return "Thread <main>"; |
8020350c | 11797 | else if (remote_multi_process_p (rs)) |
e38504b3 | 11798 | if (ptid.lwp () == 0) |
de0d863e DB |
11799 | return normal_pid_to_str (ptid); |
11800 | else | |
a068643d TT |
11801 | return string_printf ("Thread %d.%ld", |
11802 | ptid.pid (), ptid.lwp ()); | |
ecd0ada5 | 11803 | else |
a068643d | 11804 | return string_printf ("Thread %ld", ptid.lwp ()); |
79d7f229 | 11805 | } |
f3fb8c85 MS |
11806 | } |
11807 | ||
38691318 KB |
11808 | /* Get the address of the thread local variable in OBJFILE which is |
11809 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11810 | ||
f6ac5f3d PA |
11811 | CORE_ADDR |
11812 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11813 | CORE_ADDR offset) | |
38691318 | 11814 | { |
4082afcc | 11815 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11816 | { |
11817 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11818 | char *p = rs->buf.data (); |
11819 | char *endp = p + get_remote_packet_size (); | |
571dd617 | 11820 | enum packet_result result; |
38691318 KB |
11821 | |
11822 | strcpy (p, "qGetTLSAddr:"); | |
11823 | p += strlen (p); | |
82f73884 | 11824 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11825 | *p++ = ','; |
11826 | p += hexnumstr (p, offset); | |
11827 | *p++ = ','; | |
11828 | p += hexnumstr (p, lm); | |
11829 | *p++ = '\0'; | |
11830 | ||
6d820c5c | 11831 | putpkt (rs->buf); |
8d64371b | 11832 | getpkt (&rs->buf, 0); |
3e43a32a MS |
11833 | result = packet_ok (rs->buf, |
11834 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11835 | if (result == PACKET_OK) |
38691318 | 11836 | { |
b926417a | 11837 | ULONGEST addr; |
38691318 | 11838 | |
8d64371b | 11839 | unpack_varlen_hex (rs->buf.data (), &addr); |
b926417a | 11840 | return addr; |
38691318 | 11841 | } |
571dd617 | 11842 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11843 | throw_error (TLS_GENERIC_ERROR, |
11844 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11845 | else |
109c3e39 AC |
11846 | throw_error (TLS_GENERIC_ERROR, |
11847 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11848 | } |
11849 | else | |
109c3e39 AC |
11850 | throw_error (TLS_GENERIC_ERROR, |
11851 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11852 | /* Not reached. */ |
11853 | return 0; | |
11854 | } | |
11855 | ||
711e434b PM |
11856 | /* Provide thread local base, i.e. Thread Information Block address. |
11857 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11858 | ||
57810aa7 | 11859 | bool |
f6ac5f3d | 11860 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11861 | { |
4082afcc | 11862 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11863 | { |
11864 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11865 | char *p = rs->buf.data (); |
11866 | char *endp = p + get_remote_packet_size (); | |
711e434b PM |
11867 | enum packet_result result; |
11868 | ||
11869 | strcpy (p, "qGetTIBAddr:"); | |
11870 | p += strlen (p); | |
11871 | p = write_ptid (p, endp, ptid); | |
11872 | *p++ = '\0'; | |
11873 | ||
11874 | putpkt (rs->buf); | |
8d64371b | 11875 | getpkt (&rs->buf, 0); |
711e434b PM |
11876 | result = packet_ok (rs->buf, |
11877 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11878 | if (result == PACKET_OK) | |
11879 | { | |
b926417a | 11880 | ULONGEST val; |
8d64371b | 11881 | unpack_varlen_hex (rs->buf.data (), &val); |
711e434b | 11882 | if (addr) |
b926417a | 11883 | *addr = (CORE_ADDR) val; |
57810aa7 | 11884 | return true; |
711e434b PM |
11885 | } |
11886 | else if (result == PACKET_UNKNOWN) | |
11887 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11888 | else | |
11889 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11890 | } | |
11891 | else | |
11892 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11893 | /* Not reached. */ | |
57810aa7 | 11894 | return false; |
711e434b PM |
11895 | } |
11896 | ||
29709017 DJ |
11897 | /* Support for inferring a target description based on the current |
11898 | architecture and the size of a 'g' packet. While the 'g' packet | |
11899 | can have any size (since optional registers can be left off the | |
11900 | end), some sizes are easily recognizable given knowledge of the | |
11901 | approximate architecture. */ | |
11902 | ||
11903 | struct remote_g_packet_guess | |
11904 | { | |
eefce37f TT |
11905 | remote_g_packet_guess (int bytes_, const struct target_desc *tdesc_) |
11906 | : bytes (bytes_), | |
11907 | tdesc (tdesc_) | |
11908 | { | |
11909 | } | |
11910 | ||
29709017 DJ |
11911 | int bytes; |
11912 | const struct target_desc *tdesc; | |
11913 | }; | |
29709017 | 11914 | |
eefce37f | 11915 | struct remote_g_packet_data : public allocate_on_obstack |
29709017 | 11916 | { |
eefce37f | 11917 | std::vector<remote_g_packet_guess> guesses; |
29709017 DJ |
11918 | }; |
11919 | ||
11920 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11921 | ||
11922 | static void * | |
11923 | remote_g_packet_data_init (struct obstack *obstack) | |
11924 | { | |
eefce37f | 11925 | return new (obstack) remote_g_packet_data; |
29709017 DJ |
11926 | } |
11927 | ||
11928 | void | |
11929 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11930 | const struct target_desc *tdesc) | |
11931 | { | |
11932 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11933 | = ((struct remote_g_packet_data *) |
11934 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11935 | |
11936 | gdb_assert (tdesc != NULL); | |
11937 | ||
eefce37f TT |
11938 | for (const remote_g_packet_guess &guess : data->guesses) |
11939 | if (guess.bytes == bytes) | |
29709017 | 11940 | internal_error (__FILE__, __LINE__, |
9b20d036 | 11941 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11942 | bytes); |
11943 | ||
eefce37f | 11944 | data->guesses.emplace_back (bytes, tdesc); |
29709017 DJ |
11945 | } |
11946 | ||
eefce37f TT |
11947 | /* Return true if remote_read_description would do anything on this target |
11948 | and architecture, false otherwise. */ | |
d962ef82 | 11949 | |
eefce37f | 11950 | static bool |
d962ef82 DJ |
11951 | remote_read_description_p (struct target_ops *target) |
11952 | { | |
11953 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11954 | = ((struct remote_g_packet_data *) |
11955 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 | 11956 | |
eefce37f | 11957 | return !data->guesses.empty (); |
d962ef82 DJ |
11958 | } |
11959 | ||
f6ac5f3d PA |
11960 | const struct target_desc * |
11961 | remote_target::read_description () | |
29709017 DJ |
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)); | |
29709017 | 11966 | |
d962ef82 DJ |
11967 | /* Do not try this during initial connection, when we do not know |
11968 | whether there is a running but stopped thread. */ | |
55f6301a | 11969 | if (!target_has_execution () || inferior_ptid == null_ptid) |
b6a8c27b | 11970 | return beneath ()->read_description (); |
d962ef82 | 11971 | |
eefce37f | 11972 | if (!data->guesses.empty ()) |
29709017 | 11973 | { |
29709017 DJ |
11974 | int bytes = send_g_packet (); |
11975 | ||
eefce37f TT |
11976 | for (const remote_g_packet_guess &guess : data->guesses) |
11977 | if (guess.bytes == bytes) | |
11978 | return guess.tdesc; | |
29709017 DJ |
11979 | |
11980 | /* We discard the g packet. A minor optimization would be to | |
11981 | hold on to it, and fill the register cache once we have selected | |
11982 | an architecture, but it's too tricky to do safely. */ | |
11983 | } | |
11984 | ||
b6a8c27b | 11985 | return beneath ()->read_description (); |
29709017 DJ |
11986 | } |
11987 | ||
a6b151f1 DJ |
11988 | /* Remote file transfer support. This is host-initiated I/O, not |
11989 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11990 | ||
11991 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11992 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11993 | decrease *LEFT. Otherwise raise an error. */ | |
11994 | ||
11995 | static void | |
a121b7c1 | 11996 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11997 | { |
11998 | int len = strlen (string); | |
11999 | ||
12000 | if (len > *left) | |
12001 | error (_("Packet too long for target.")); | |
12002 | ||
12003 | memcpy (*buffer, string, len); | |
12004 | *buffer += len; | |
12005 | *left -= len; | |
12006 | ||
12007 | /* NUL-terminate the buffer as a convenience, if there is | |
12008 | room. */ | |
12009 | if (*left) | |
12010 | **buffer = '\0'; | |
12011 | } | |
12012 | ||
12013 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
12014 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12015 | decrease *LEFT. Otherwise raise an error. */ | |
12016 | ||
12017 | static void | |
12018 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
12019 | int len) | |
12020 | { | |
12021 | if (2 * len > *left) | |
12022 | error (_("Packet too long for target.")); | |
12023 | ||
12024 | bin2hex (bytes, *buffer, len); | |
12025 | *buffer += 2 * len; | |
12026 | *left -= 2 * len; | |
12027 | ||
12028 | /* NUL-terminate the buffer as a convenience, if there is | |
12029 | room. */ | |
12030 | if (*left) | |
12031 | **buffer = '\0'; | |
12032 | } | |
12033 | ||
12034 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
12035 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12036 | decrease *LEFT. Otherwise raise an error. */ | |
12037 | ||
12038 | static void | |
12039 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
12040 | { | |
12041 | int len = hexnumlen (value); | |
12042 | ||
12043 | if (len > *left) | |
12044 | error (_("Packet too long for target.")); | |
12045 | ||
12046 | hexnumstr (*buffer, value); | |
12047 | *buffer += len; | |
12048 | *left -= len; | |
12049 | ||
12050 | /* NUL-terminate the buffer as a convenience, if there is | |
12051 | room. */ | |
12052 | if (*left) | |
12053 | **buffer = '\0'; | |
12054 | } | |
12055 | ||
12056 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
12057 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
12058 | was included, and *ATTACHMENT to point to the start of the annex | |
12059 | if any. The length of the packet isn't needed here; there may | |
12060 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
12061 | ||
12062 | Return 0 if the packet could be parsed, -1 if it could not. If | |
12063 | -1 is returned, the other variables may not be initialized. */ | |
12064 | ||
12065 | static int | |
aa2838cc SM |
12066 | remote_hostio_parse_result (const char *buffer, int *retcode, |
12067 | int *remote_errno, const char **attachment) | |
a6b151f1 DJ |
12068 | { |
12069 | char *p, *p2; | |
12070 | ||
12071 | *remote_errno = 0; | |
12072 | *attachment = NULL; | |
12073 | ||
12074 | if (buffer[0] != 'F') | |
12075 | return -1; | |
12076 | ||
12077 | errno = 0; | |
12078 | *retcode = strtol (&buffer[1], &p, 16); | |
12079 | if (errno != 0 || p == &buffer[1]) | |
12080 | return -1; | |
12081 | ||
12082 | /* Check for ",errno". */ | |
12083 | if (*p == ',') | |
12084 | { | |
12085 | errno = 0; | |
12086 | *remote_errno = strtol (p + 1, &p2, 16); | |
12087 | if (errno != 0 || p + 1 == p2) | |
12088 | return -1; | |
12089 | p = p2; | |
12090 | } | |
12091 | ||
12092 | /* Check for ";attachment". If there is no attachment, the | |
12093 | packet should end here. */ | |
12094 | if (*p == ';') | |
12095 | { | |
12096 | *attachment = p + 1; | |
12097 | return 0; | |
12098 | } | |
12099 | else if (*p == '\0') | |
12100 | return 0; | |
12101 | else | |
12102 | return -1; | |
12103 | } | |
12104 | ||
12105 | /* Send a prepared I/O packet to the target and read its response. | |
12106 | The prepared packet is in the global RS->BUF before this function | |
12107 | is called, and the answer is there when we return. | |
12108 | ||
12109 | COMMAND_BYTES is the length of the request to send, which may include | |
12110 | binary data. WHICH_PACKET is the packet configuration to check | |
12111 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
12112 | is set to the error number and -1 is returned. Otherwise the value | |
12113 | returned by the function is returned. | |
12114 | ||
12115 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
12116 | attachment is expected; an error will be reported if there's a | |
12117 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
12118 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
12119 | attachment's length. */ | |
12120 | ||
6b8edb51 PA |
12121 | int |
12122 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
aa2838cc | 12123 | int *remote_errno, const char **attachment, |
6b8edb51 | 12124 | int *attachment_len) |
a6b151f1 DJ |
12125 | { |
12126 | struct remote_state *rs = get_remote_state (); | |
12127 | int ret, bytes_read; | |
aa2838cc | 12128 | const char *attachment_tmp; |
a6b151f1 | 12129 | |
20db9c52 | 12130 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
12131 | { |
12132 | *remote_errno = FILEIO_ENOSYS; | |
12133 | return -1; | |
12134 | } | |
12135 | ||
8d64371b TT |
12136 | putpkt_binary (rs->buf.data (), command_bytes); |
12137 | bytes_read = getpkt_sane (&rs->buf, 0); | |
a6b151f1 DJ |
12138 | |
12139 | /* If it timed out, something is wrong. Don't try to parse the | |
12140 | buffer. */ | |
12141 | if (bytes_read < 0) | |
12142 | { | |
12143 | *remote_errno = FILEIO_EINVAL; | |
12144 | return -1; | |
12145 | } | |
12146 | ||
12147 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
12148 | { | |
12149 | case PACKET_ERROR: | |
12150 | *remote_errno = FILEIO_EINVAL; | |
12151 | return -1; | |
12152 | case PACKET_UNKNOWN: | |
12153 | *remote_errno = FILEIO_ENOSYS; | |
12154 | return -1; | |
12155 | case PACKET_OK: | |
12156 | break; | |
12157 | } | |
12158 | ||
8d64371b | 12159 | if (remote_hostio_parse_result (rs->buf.data (), &ret, remote_errno, |
a6b151f1 DJ |
12160 | &attachment_tmp)) |
12161 | { | |
12162 | *remote_errno = FILEIO_EINVAL; | |
12163 | return -1; | |
12164 | } | |
12165 | ||
12166 | /* Make sure we saw an attachment if and only if we expected one. */ | |
12167 | if ((attachment_tmp == NULL && attachment != NULL) | |
12168 | || (attachment_tmp != NULL && attachment == NULL)) | |
12169 | { | |
12170 | *remote_errno = FILEIO_EINVAL; | |
12171 | return -1; | |
12172 | } | |
12173 | ||
12174 | /* If an attachment was found, it must point into the packet buffer; | |
12175 | work out how many bytes there were. */ | |
12176 | if (attachment_tmp != NULL) | |
12177 | { | |
12178 | *attachment = attachment_tmp; | |
8d64371b | 12179 | *attachment_len = bytes_read - (*attachment - rs->buf.data ()); |
a6b151f1 DJ |
12180 | } |
12181 | ||
12182 | return ret; | |
12183 | } | |
12184 | ||
dd194f6b | 12185 | /* See declaration.h. */ |
80152258 | 12186 | |
dd194f6b PA |
12187 | void |
12188 | readahead_cache::invalidate () | |
80152258 | 12189 | { |
dd194f6b | 12190 | this->fd = -1; |
80152258 PA |
12191 | } |
12192 | ||
dd194f6b | 12193 | /* See declaration.h. */ |
80152258 | 12194 | |
dd194f6b PA |
12195 | void |
12196 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 12197 | { |
dd194f6b PA |
12198 | if (this->fd == fd) |
12199 | this->fd = -1; | |
80152258 PA |
12200 | } |
12201 | ||
15a201c8 GB |
12202 | /* Set the filesystem remote_hostio functions that take FILENAME |
12203 | arguments will use. Return 0 on success, or -1 if an error | |
12204 | occurs (and set *REMOTE_ERRNO). */ | |
12205 | ||
6b8edb51 PA |
12206 | int |
12207 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
12208 | int *remote_errno) | |
15a201c8 GB |
12209 | { |
12210 | struct remote_state *rs = get_remote_state (); | |
12211 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
8d64371b | 12212 | char *p = rs->buf.data (); |
15a201c8 GB |
12213 | int left = get_remote_packet_size () - 1; |
12214 | char arg[9]; | |
12215 | int ret; | |
12216 | ||
12217 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
12218 | return 0; | |
12219 | ||
12220 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
12221 | return 0; | |
12222 | ||
12223 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
12224 | ||
12225 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
12226 | remote_buffer_add_string (&p, &left, arg); | |
12227 | ||
8d64371b | 12228 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_setfs, |
15a201c8 GB |
12229 | remote_errno, NULL, NULL); |
12230 | ||
12231 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
12232 | return 0; | |
12233 | ||
12234 | if (ret == 0) | |
12235 | rs->fs_pid = required_pid; | |
12236 | ||
12237 | return ret; | |
12238 | } | |
12239 | ||
12e2a5fd | 12240 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 12241 | |
6b8edb51 PA |
12242 | int |
12243 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
12244 | int flags, int mode, int warn_if_slow, | |
12245 | int *remote_errno) | |
a6b151f1 DJ |
12246 | { |
12247 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12248 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12249 | int left = get_remote_packet_size () - 1; |
12250 | ||
4313b8c0 GB |
12251 | if (warn_if_slow) |
12252 | { | |
12253 | static int warning_issued = 0; | |
12254 | ||
12255 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
12256 | filename); | |
12257 | ||
12258 | if (!warning_issued) | |
12259 | { | |
12260 | warning (_("File transfers from remote targets can be slow." | |
12261 | " Use \"set sysroot\" to access files locally" | |
12262 | " instead.")); | |
12263 | warning_issued = 1; | |
12264 | } | |
12265 | } | |
12266 | ||
15a201c8 GB |
12267 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12268 | return -1; | |
12269 | ||
a6b151f1 DJ |
12270 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
12271 | ||
12272 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12273 | strlen (filename)); | |
12274 | remote_buffer_add_string (&p, &left, ","); | |
12275 | ||
12276 | remote_buffer_add_int (&p, &left, flags); | |
12277 | remote_buffer_add_string (&p, &left, ","); | |
12278 | ||
12279 | remote_buffer_add_int (&p, &left, mode); | |
12280 | ||
8d64371b | 12281 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_open, |
a6b151f1 DJ |
12282 | remote_errno, NULL, NULL); |
12283 | } | |
12284 | ||
f6ac5f3d PA |
12285 | int |
12286 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
12287 | int flags, int mode, int warn_if_slow, | |
12288 | int *remote_errno) | |
12289 | { | |
6b8edb51 | 12290 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
12291 | remote_errno); |
12292 | } | |
12293 | ||
12e2a5fd | 12294 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 12295 | |
6b8edb51 PA |
12296 | int |
12297 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12298 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12299 | { |
12300 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12301 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12302 | int left = get_remote_packet_size (); |
12303 | int out_len; | |
12304 | ||
dd194f6b | 12305 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12306 | |
a6b151f1 DJ |
12307 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
12308 | ||
12309 | remote_buffer_add_int (&p, &left, fd); | |
12310 | remote_buffer_add_string (&p, &left, ","); | |
12311 | ||
12312 | remote_buffer_add_int (&p, &left, offset); | |
12313 | remote_buffer_add_string (&p, &left, ","); | |
12314 | ||
124e13d9 | 12315 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
8d64371b TT |
12316 | (get_remote_packet_size () |
12317 | - (p - rs->buf.data ()))); | |
a6b151f1 | 12318 | |
8d64371b | 12319 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pwrite, |
a6b151f1 DJ |
12320 | remote_errno, NULL, NULL); |
12321 | } | |
12322 | ||
f6ac5f3d PA |
12323 | int |
12324 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12325 | ULONGEST offset, int *remote_errno) | |
12326 | { | |
6b8edb51 | 12327 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12328 | } |
12329 | ||
80152258 PA |
12330 | /* Helper for the implementation of to_fileio_pread. Read the file |
12331 | from the remote side with vFile:pread. */ | |
a6b151f1 | 12332 | |
6b8edb51 PA |
12333 | int |
12334 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
12335 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12336 | { |
12337 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12338 | char *p = rs->buf.data (); |
aa2838cc | 12339 | const char *attachment; |
a6b151f1 DJ |
12340 | int left = get_remote_packet_size (); |
12341 | int ret, attachment_len; | |
12342 | int read_len; | |
12343 | ||
12344 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
12345 | ||
12346 | remote_buffer_add_int (&p, &left, fd); | |
12347 | remote_buffer_add_string (&p, &left, ","); | |
12348 | ||
12349 | remote_buffer_add_int (&p, &left, len); | |
12350 | remote_buffer_add_string (&p, &left, ","); | |
12351 | ||
12352 | remote_buffer_add_int (&p, &left, offset); | |
12353 | ||
8d64371b | 12354 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pread, |
a6b151f1 DJ |
12355 | remote_errno, &attachment, |
12356 | &attachment_len); | |
12357 | ||
12358 | if (ret < 0) | |
12359 | return ret; | |
12360 | ||
bc20a4af | 12361 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
12362 | read_buf, len); |
12363 | if (read_len != ret) | |
12364 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
12365 | ||
12366 | return ret; | |
12367 | } | |
12368 | ||
dd194f6b | 12369 | /* See declaration.h. */ |
80152258 | 12370 | |
dd194f6b PA |
12371 | int |
12372 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
12373 | ULONGEST offset) | |
80152258 | 12374 | { |
dd194f6b PA |
12375 | if (this->fd == fd |
12376 | && this->offset <= offset | |
12377 | && offset < this->offset + this->bufsize) | |
80152258 | 12378 | { |
dd194f6b | 12379 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
12380 | |
12381 | if (offset + len > max) | |
12382 | len = max - offset; | |
12383 | ||
dd194f6b | 12384 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
12385 | return len; |
12386 | } | |
12387 | ||
12388 | return 0; | |
12389 | } | |
12390 | ||
12391 | /* Implementation of to_fileio_pread. */ | |
12392 | ||
6b8edb51 PA |
12393 | int |
12394 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
12395 | ULONGEST offset, int *remote_errno) | |
80152258 PA |
12396 | { |
12397 | int ret; | |
12398 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12399 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12400 | |
dd194f6b | 12401 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12402 | if (ret > 0) |
12403 | { | |
12404 | cache->hit_count++; | |
12405 | ||
2189c312 SM |
12406 | remote_debug_printf ("readahead cache hit %s", |
12407 | pulongest (cache->hit_count)); | |
80152258 PA |
12408 | return ret; |
12409 | } | |
12410 | ||
12411 | cache->miss_count++; | |
2189c312 SM |
12412 | |
12413 | remote_debug_printf ("readahead cache miss %s", | |
12414 | pulongest (cache->miss_count)); | |
80152258 PA |
12415 | |
12416 | cache->fd = fd; | |
12417 | cache->offset = offset; | |
12418 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 12419 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 | 12420 | |
6b8edb51 | 12421 | ret = remote_hostio_pread_vFile (cache->fd, cache->buf, cache->bufsize, |
80152258 PA |
12422 | cache->offset, remote_errno); |
12423 | if (ret <= 0) | |
12424 | { | |
dd194f6b | 12425 | cache->invalidate_fd (fd); |
80152258 PA |
12426 | return ret; |
12427 | } | |
12428 | ||
12429 | cache->bufsize = ret; | |
dd194f6b | 12430 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12431 | } |
12432 | ||
f6ac5f3d PA |
12433 | int |
12434 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
12435 | ULONGEST offset, int *remote_errno) | |
12436 | { | |
6b8edb51 | 12437 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12438 | } |
12439 | ||
12e2a5fd | 12440 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12441 | |
6b8edb51 PA |
12442 | int |
12443 | remote_target::remote_hostio_close (int fd, int *remote_errno) | |
a6b151f1 DJ |
12444 | { |
12445 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12446 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12447 | int left = get_remote_packet_size () - 1; |
12448 | ||
dd194f6b | 12449 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12450 | |
a6b151f1 DJ |
12451 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12452 | ||
12453 | remote_buffer_add_int (&p, &left, fd); | |
12454 | ||
8d64371b | 12455 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_close, |
a6b151f1 DJ |
12456 | remote_errno, NULL, NULL); |
12457 | } | |
12458 | ||
f6ac5f3d PA |
12459 | int |
12460 | remote_target::fileio_close (int fd, int *remote_errno) | |
12461 | { | |
6b8edb51 | 12462 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12463 | } |
12464 | ||
12e2a5fd | 12465 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12466 | |
6b8edb51 PA |
12467 | int |
12468 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
12469 | int *remote_errno) | |
a6b151f1 DJ |
12470 | { |
12471 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12472 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12473 | int left = get_remote_packet_size () - 1; |
12474 | ||
15a201c8 GB |
12475 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12476 | return -1; | |
12477 | ||
a6b151f1 DJ |
12478 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12479 | ||
12480 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12481 | strlen (filename)); | |
12482 | ||
8d64371b | 12483 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_unlink, |
a6b151f1 DJ |
12484 | remote_errno, NULL, NULL); |
12485 | } | |
12486 | ||
f6ac5f3d PA |
12487 | int |
12488 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
12489 | int *remote_errno) | |
12490 | { | |
6b8edb51 | 12491 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12492 | } |
12493 | ||
12e2a5fd | 12494 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12495 | |
f6ac5f3d PA |
12496 | gdb::optional<std::string> |
12497 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
12498 | int *remote_errno) | |
b9e7b9c3 UW |
12499 | { |
12500 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12501 | char *p = rs->buf.data (); |
aa2838cc | 12502 | const char *attachment; |
b9e7b9c3 UW |
12503 | int left = get_remote_packet_size (); |
12504 | int len, attachment_len; | |
12505 | int read_len; | |
b9e7b9c3 | 12506 | |
15a201c8 | 12507 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12508 | return {}; |
15a201c8 | 12509 | |
b9e7b9c3 UW |
12510 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12511 | ||
12512 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12513 | strlen (filename)); | |
12514 | ||
8d64371b | 12515 | len = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_readlink, |
b9e7b9c3 UW |
12516 | remote_errno, &attachment, |
12517 | &attachment_len); | |
12518 | ||
12519 | if (len < 0) | |
e0d3522b | 12520 | return {}; |
b9e7b9c3 | 12521 | |
e0d3522b | 12522 | std::string ret (len, '\0'); |
b9e7b9c3 | 12523 | |
bc20a4af | 12524 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12525 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12526 | if (read_len != len) |
12527 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12528 | ||
b9e7b9c3 UW |
12529 | return ret; |
12530 | } | |
12531 | ||
12e2a5fd | 12532 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12533 | |
f6ac5f3d PA |
12534 | int |
12535 | remote_target::fileio_fstat (int fd, struct stat *st, int *remote_errno) | |
0a93529c GB |
12536 | { |
12537 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12538 | char *p = rs->buf.data (); |
0a93529c GB |
12539 | int left = get_remote_packet_size (); |
12540 | int attachment_len, ret; | |
aa2838cc | 12541 | const char *attachment; |
0a93529c GB |
12542 | struct fio_stat fst; |
12543 | int read_len; | |
12544 | ||
464b0089 GB |
12545 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12546 | ||
12547 | remote_buffer_add_int (&p, &left, fd); | |
12548 | ||
8d64371b | 12549 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_fstat, |
464b0089 GB |
12550 | remote_errno, &attachment, |
12551 | &attachment_len); | |
12552 | if (ret < 0) | |
0a93529c | 12553 | { |
464b0089 GB |
12554 | if (*remote_errno != FILEIO_ENOSYS) |
12555 | return ret; | |
12556 | ||
0a93529c GB |
12557 | /* Strictly we should return -1, ENOSYS here, but when |
12558 | "set sysroot remote:" was implemented in August 2008 | |
12559 | BFD's need for a stat function was sidestepped with | |
12560 | this hack. This was not remedied until March 2015 | |
12561 | so we retain the previous behavior to avoid breaking | |
12562 | compatibility. | |
12563 | ||
12564 | Note that the memset is a March 2015 addition; older | |
12565 | GDBs set st_size *and nothing else* so the structure | |
12566 | would have garbage in all other fields. This might | |
12567 | break something but retaining the previous behavior | |
12568 | here would be just too wrong. */ | |
12569 | ||
12570 | memset (st, 0, sizeof (struct stat)); | |
12571 | st->st_size = INT_MAX; | |
12572 | return 0; | |
12573 | } | |
12574 | ||
0a93529c GB |
12575 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12576 | (gdb_byte *) &fst, sizeof (fst)); | |
12577 | ||
12578 | if (read_len != ret) | |
12579 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12580 | ||
12581 | if (read_len != sizeof (fst)) | |
12582 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12583 | read_len, (int) sizeof (fst)); | |
12584 | ||
12585 | remote_fileio_to_host_stat (&fst, st); | |
12586 | ||
12587 | return 0; | |
12588 | } | |
12589 | ||
12e2a5fd | 12590 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12591 | |
57810aa7 | 12592 | bool |
f6ac5f3d | 12593 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12594 | { |
12595 | /* Valgrind GDB presents itself as a remote target but works | |
12596 | on the local filesystem: it does not implement remote get | |
12597 | and users are not expected to set a sysroot. To handle | |
12598 | this case we treat the remote filesystem as local if the | |
12599 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12600 | does not support vFile:open. */ | |
a3be80c3 | 12601 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
12602 | { |
12603 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12604 | ||
12605 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12606 | { | |
12607 | int fd, remote_errno; | |
12608 | ||
12609 | /* Try opening a file to probe support. The supplied | |
12610 | filename is irrelevant, we only care about whether | |
12611 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12612 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12613 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12614 | &remote_errno); |
12615 | ||
12616 | if (fd >= 0) | |
6b8edb51 | 12617 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 GB |
12618 | |
12619 | ps = packet_support (PACKET_vFile_open); | |
12620 | } | |
12621 | ||
12622 | if (ps == PACKET_DISABLE) | |
12623 | { | |
12624 | static int warning_issued = 0; | |
12625 | ||
12626 | if (!warning_issued) | |
12627 | { | |
12628 | warning (_("remote target does not support file" | |
12629 | " transfer, attempting to access files" | |
12630 | " from local filesystem.")); | |
12631 | warning_issued = 1; | |
12632 | } | |
12633 | ||
57810aa7 | 12634 | return true; |
e3dd7556 GB |
12635 | } |
12636 | } | |
12637 | ||
57810aa7 | 12638 | return false; |
e3dd7556 GB |
12639 | } |
12640 | ||
a6b151f1 DJ |
12641 | static int |
12642 | remote_fileio_errno_to_host (int errnum) | |
12643 | { | |
12644 | switch (errnum) | |
12645 | { | |
12646 | case FILEIO_EPERM: | |
dda83cd7 | 12647 | return EPERM; |
a6b151f1 | 12648 | case FILEIO_ENOENT: |
dda83cd7 | 12649 | return ENOENT; |
a6b151f1 | 12650 | case FILEIO_EINTR: |
dda83cd7 | 12651 | return EINTR; |
a6b151f1 | 12652 | case FILEIO_EIO: |
dda83cd7 | 12653 | return EIO; |
a6b151f1 | 12654 | case FILEIO_EBADF: |
dda83cd7 | 12655 | return EBADF; |
a6b151f1 | 12656 | case FILEIO_EACCES: |
dda83cd7 | 12657 | return EACCES; |
a6b151f1 | 12658 | case FILEIO_EFAULT: |
dda83cd7 | 12659 | return EFAULT; |
a6b151f1 | 12660 | case FILEIO_EBUSY: |
dda83cd7 | 12661 | return EBUSY; |
a6b151f1 | 12662 | case FILEIO_EEXIST: |
dda83cd7 | 12663 | return EEXIST; |
a6b151f1 | 12664 | case FILEIO_ENODEV: |
dda83cd7 | 12665 | return ENODEV; |
a6b151f1 | 12666 | case FILEIO_ENOTDIR: |
dda83cd7 | 12667 | return ENOTDIR; |
a6b151f1 | 12668 | case FILEIO_EISDIR: |
dda83cd7 | 12669 | return EISDIR; |
a6b151f1 | 12670 | case FILEIO_EINVAL: |
dda83cd7 | 12671 | return EINVAL; |
a6b151f1 | 12672 | case FILEIO_ENFILE: |
dda83cd7 | 12673 | return ENFILE; |
a6b151f1 | 12674 | case FILEIO_EMFILE: |
dda83cd7 | 12675 | return EMFILE; |
a6b151f1 | 12676 | case FILEIO_EFBIG: |
dda83cd7 | 12677 | return EFBIG; |
a6b151f1 | 12678 | case FILEIO_ENOSPC: |
dda83cd7 | 12679 | return ENOSPC; |
a6b151f1 | 12680 | case FILEIO_ESPIPE: |
dda83cd7 | 12681 | return ESPIPE; |
a6b151f1 | 12682 | case FILEIO_EROFS: |
dda83cd7 | 12683 | return EROFS; |
a6b151f1 | 12684 | case FILEIO_ENOSYS: |
dda83cd7 | 12685 | return ENOSYS; |
a6b151f1 | 12686 | case FILEIO_ENAMETOOLONG: |
dda83cd7 | 12687 | return ENAMETOOLONG; |
a6b151f1 DJ |
12688 | } |
12689 | return -1; | |
12690 | } | |
12691 | ||
12692 | static char * | |
12693 | remote_hostio_error (int errnum) | |
12694 | { | |
12695 | int host_error = remote_fileio_errno_to_host (errnum); | |
12696 | ||
12697 | if (host_error == -1) | |
12698 | error (_("Unknown remote I/O error %d"), errnum); | |
12699 | else | |
12700 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12701 | } | |
12702 | ||
440b7aec PA |
12703 | /* A RAII wrapper around a remote file descriptor. */ |
12704 | ||
12705 | class scoped_remote_fd | |
a6b151f1 | 12706 | { |
440b7aec | 12707 | public: |
6b8edb51 PA |
12708 | scoped_remote_fd (remote_target *remote, int fd) |
12709 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12710 | { |
12711 | } | |
a6b151f1 | 12712 | |
440b7aec PA |
12713 | ~scoped_remote_fd () |
12714 | { | |
12715 | if (m_fd != -1) | |
12716 | { | |
12717 | try | |
12718 | { | |
12719 | int remote_errno; | |
6b8edb51 | 12720 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12721 | } |
12722 | catch (...) | |
12723 | { | |
12724 | /* Swallow exception before it escapes the dtor. If | |
12725 | something goes wrong, likely the connection is gone, | |
12726 | and there's nothing else that can be done. */ | |
12727 | } | |
12728 | } | |
12729 | } | |
12730 | ||
12731 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12732 | ||
12733 | /* Release ownership of the file descriptor, and return it. */ | |
88a774b9 | 12734 | ATTRIBUTE_UNUSED_RESULT int release () noexcept |
440b7aec PA |
12735 | { |
12736 | int fd = m_fd; | |
12737 | m_fd = -1; | |
12738 | return fd; | |
12739 | } | |
12740 | ||
12741 | /* Return the owned file descriptor. */ | |
12742 | int get () const noexcept | |
12743 | { | |
12744 | return m_fd; | |
12745 | } | |
12746 | ||
12747 | private: | |
6b8edb51 PA |
12748 | /* The remote target. */ |
12749 | remote_target *m_remote; | |
12750 | ||
440b7aec PA |
12751 | /* The owned remote I/O file descriptor. */ |
12752 | int m_fd; | |
12753 | }; | |
a6b151f1 DJ |
12754 | |
12755 | void | |
12756 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12757 | { |
12758 | remote_target *remote = get_current_remote_target (); | |
12759 | ||
12760 | if (remote == nullptr) | |
12761 | error (_("command can only be used with remote target")); | |
12762 | ||
12763 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12764 | } | |
12765 | ||
12766 | void | |
12767 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12768 | int from_tty) | |
a6b151f1 | 12769 | { |
440b7aec | 12770 | int retcode, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12771 | int bytes_in_buffer; |
12772 | int saw_eof; | |
12773 | ULONGEST offset; | |
a6b151f1 | 12774 | |
d419f42d | 12775 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12776 | if (file == NULL) |
12777 | perror_with_name (local_file); | |
a6b151f1 | 12778 | |
440b7aec | 12779 | scoped_remote_fd fd |
6b8edb51 PA |
12780 | (this, remote_hostio_open (NULL, |
12781 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12782 | | FILEIO_O_TRUNC), | |
12783 | 0700, 0, &remote_errno)); | |
440b7aec | 12784 | if (fd.get () == -1) |
a6b151f1 DJ |
12785 | remote_hostio_error (remote_errno); |
12786 | ||
12787 | /* Send up to this many bytes at once. They won't all fit in the | |
12788 | remote packet limit, so we'll transfer slightly fewer. */ | |
12789 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12790 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12791 | |
a6b151f1 DJ |
12792 | bytes_in_buffer = 0; |
12793 | saw_eof = 0; | |
12794 | offset = 0; | |
12795 | while (bytes_in_buffer || !saw_eof) | |
12796 | { | |
12797 | if (!saw_eof) | |
12798 | { | |
5ca3b260 | 12799 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12800 | io_size - bytes_in_buffer, |
d419f42d | 12801 | file.get ()); |
a6b151f1 DJ |
12802 | if (bytes == 0) |
12803 | { | |
d419f42d | 12804 | if (ferror (file.get ())) |
a6b151f1 DJ |
12805 | error (_("Error reading %s."), local_file); |
12806 | else | |
12807 | { | |
12808 | /* EOF. Unless there is something still in the | |
12809 | buffer from the last iteration, we are done. */ | |
12810 | saw_eof = 1; | |
12811 | if (bytes_in_buffer == 0) | |
12812 | break; | |
12813 | } | |
12814 | } | |
12815 | } | |
12816 | else | |
12817 | bytes = 0; | |
12818 | ||
12819 | bytes += bytes_in_buffer; | |
12820 | bytes_in_buffer = 0; | |
12821 | ||
5ca3b260 | 12822 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 12823 | offset, &remote_errno); |
a6b151f1 DJ |
12824 | |
12825 | if (retcode < 0) | |
12826 | remote_hostio_error (remote_errno); | |
12827 | else if (retcode == 0) | |
12828 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12829 | else if (retcode < bytes) | |
12830 | { | |
12831 | /* Short write. Save the rest of the read data for the next | |
12832 | write. */ | |
12833 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 12834 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
12835 | } |
12836 | ||
12837 | offset += retcode; | |
12838 | } | |
12839 | ||
6b8edb51 | 12840 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12841 | remote_hostio_error (remote_errno); |
12842 | ||
12843 | if (from_tty) | |
12844 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
a6b151f1 DJ |
12845 | } |
12846 | ||
12847 | void | |
12848 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
12849 | { |
12850 | remote_target *remote = get_current_remote_target (); | |
12851 | ||
12852 | if (remote == nullptr) | |
12853 | error (_("command can only be used with remote target")); | |
12854 | ||
12855 | remote->remote_file_get (remote_file, local_file, from_tty); | |
12856 | } | |
12857 | ||
12858 | void | |
12859 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
12860 | int from_tty) | |
a6b151f1 | 12861 | { |
440b7aec | 12862 | int remote_errno, bytes, io_size; |
a6b151f1 | 12863 | ULONGEST offset; |
a6b151f1 | 12864 | |
440b7aec | 12865 | scoped_remote_fd fd |
6b8edb51 PA |
12866 | (this, remote_hostio_open (NULL, |
12867 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12868 | &remote_errno)); | |
440b7aec | 12869 | if (fd.get () == -1) |
a6b151f1 DJ |
12870 | remote_hostio_error (remote_errno); |
12871 | ||
d419f42d | 12872 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12873 | if (file == NULL) |
12874 | perror_with_name (local_file); | |
a6b151f1 DJ |
12875 | |
12876 | /* Send up to this many bytes at once. They won't all fit in the | |
12877 | remote packet limit, so we'll transfer slightly fewer. */ | |
12878 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12879 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12880 | |
a6b151f1 DJ |
12881 | offset = 0; |
12882 | while (1) | |
12883 | { | |
5ca3b260 | 12884 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 12885 | &remote_errno); |
a6b151f1 DJ |
12886 | if (bytes == 0) |
12887 | /* Success, but no bytes, means end-of-file. */ | |
12888 | break; | |
12889 | if (bytes == -1) | |
12890 | remote_hostio_error (remote_errno); | |
12891 | ||
12892 | offset += bytes; | |
12893 | ||
5ca3b260 | 12894 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
12895 | if (bytes == 0) |
12896 | perror_with_name (local_file); | |
12897 | } | |
12898 | ||
6b8edb51 | 12899 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12900 | remote_hostio_error (remote_errno); |
12901 | ||
12902 | if (from_tty) | |
12903 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
a6b151f1 DJ |
12904 | } |
12905 | ||
12906 | void | |
12907 | remote_file_delete (const char *remote_file, int from_tty) | |
12908 | { | |
6b8edb51 | 12909 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 12910 | |
6b8edb51 | 12911 | if (remote == nullptr) |
a6b151f1 DJ |
12912 | error (_("command can only be used with remote target")); |
12913 | ||
6b8edb51 PA |
12914 | remote->remote_file_delete (remote_file, from_tty); |
12915 | } | |
12916 | ||
12917 | void | |
12918 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
12919 | { | |
12920 | int retcode, remote_errno; | |
12921 | ||
12922 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
12923 | if (retcode == -1) |
12924 | remote_hostio_error (remote_errno); | |
12925 | ||
12926 | if (from_tty) | |
12927 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12928 | } | |
12929 | ||
12930 | static void | |
ac88e2de | 12931 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12932 | { |
d1a41061 PP |
12933 | if (args == NULL) |
12934 | error_no_arg (_("file to put")); | |
12935 | ||
773a1edc | 12936 | gdb_argv argv (args); |
a6b151f1 DJ |
12937 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12938 | error (_("Invalid parameters to remote put")); | |
12939 | ||
12940 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12941 | } |
12942 | ||
12943 | static void | |
ac88e2de | 12944 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12945 | { |
d1a41061 PP |
12946 | if (args == NULL) |
12947 | error_no_arg (_("file to get")); | |
12948 | ||
773a1edc | 12949 | gdb_argv argv (args); |
a6b151f1 DJ |
12950 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12951 | error (_("Invalid parameters to remote get")); | |
12952 | ||
12953 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12954 | } |
12955 | ||
12956 | static void | |
ac88e2de | 12957 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12958 | { |
d1a41061 PP |
12959 | if (args == NULL) |
12960 | error_no_arg (_("file to delete")); | |
12961 | ||
773a1edc | 12962 | gdb_argv argv (args); |
a6b151f1 DJ |
12963 | if (argv[0] == NULL || argv[1] != NULL) |
12964 | error (_("Invalid parameters to remote delete")); | |
12965 | ||
12966 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12967 | } |
12968 | ||
57810aa7 | 12969 | bool |
f6ac5f3d | 12970 | remote_target::can_execute_reverse () |
b2175913 | 12971 | { |
4082afcc PA |
12972 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12973 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 12974 | return true; |
40ab02ce | 12975 | else |
57810aa7 | 12976 | return false; |
b2175913 MS |
12977 | } |
12978 | ||
57810aa7 | 12979 | bool |
f6ac5f3d | 12980 | remote_target::supports_non_stop () |
74531fed | 12981 | { |
57810aa7 | 12982 | return true; |
74531fed PA |
12983 | } |
12984 | ||
57810aa7 | 12985 | bool |
f6ac5f3d | 12986 | remote_target::supports_disable_randomization () |
03583c20 UW |
12987 | { |
12988 | /* Only supported in extended mode. */ | |
57810aa7 | 12989 | return false; |
03583c20 UW |
12990 | } |
12991 | ||
57810aa7 | 12992 | bool |
f6ac5f3d | 12993 | remote_target::supports_multi_process () |
8a305172 PA |
12994 | { |
12995 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12996 | |
8020350c | 12997 | return remote_multi_process_p (rs); |
8a305172 PA |
12998 | } |
12999 | ||
70221824 | 13000 | static int |
f6ac5f3d | 13001 | remote_supports_cond_tracepoints () |
782b2b07 | 13002 | { |
4082afcc | 13003 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
13004 | } |
13005 | ||
57810aa7 | 13006 | bool |
f6ac5f3d | 13007 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 13008 | { |
4082afcc | 13009 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
13010 | } |
13011 | ||
70221824 | 13012 | static int |
f6ac5f3d | 13013 | remote_supports_fast_tracepoints () |
7a697b8d | 13014 | { |
4082afcc | 13015 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
13016 | } |
13017 | ||
0fb4aa4b | 13018 | static int |
f6ac5f3d | 13019 | remote_supports_static_tracepoints () |
0fb4aa4b | 13020 | { |
4082afcc | 13021 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
13022 | } |
13023 | ||
1e4d1764 | 13024 | static int |
f6ac5f3d | 13025 | remote_supports_install_in_trace () |
1e4d1764 | 13026 | { |
4082afcc | 13027 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
13028 | } |
13029 | ||
57810aa7 | 13030 | bool |
f6ac5f3d | 13031 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 13032 | { |
4082afcc PA |
13033 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
13034 | == PACKET_ENABLE); | |
d248b706 KY |
13035 | } |
13036 | ||
57810aa7 | 13037 | bool |
f6ac5f3d | 13038 | remote_target::supports_string_tracing () |
3065dfb6 | 13039 | { |
4082afcc | 13040 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
13041 | } |
13042 | ||
57810aa7 | 13043 | bool |
f6ac5f3d | 13044 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 13045 | { |
4082afcc | 13046 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
13047 | } |
13048 | ||
f6ac5f3d PA |
13049 | void |
13050 | remote_target::trace_init () | |
35b1e5cc | 13051 | { |
b6bb3468 PA |
13052 | struct remote_state *rs = get_remote_state (); |
13053 | ||
35b1e5cc | 13054 | putpkt ("QTinit"); |
b6bb3468 | 13055 | remote_get_noisy_reply (); |
8d64371b | 13056 | if (strcmp (rs->buf.data (), "OK") != 0) |
35b1e5cc SS |
13057 | error (_("Target does not support this command.")); |
13058 | } | |
13059 | ||
409873ef SS |
13060 | /* Recursive routine to walk through command list including loops, and |
13061 | download packets for each command. */ | |
13062 | ||
6b8edb51 PA |
13063 | void |
13064 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
13065 | struct command_line *cmds) | |
409873ef SS |
13066 | { |
13067 | struct remote_state *rs = get_remote_state (); | |
13068 | struct command_line *cmd; | |
13069 | ||
13070 | for (cmd = cmds; cmd; cmd = cmd->next) | |
13071 | { | |
0df8b418 | 13072 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 13073 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 13074 | encode_source_string (num, addr, "cmd", cmd->line, |
8d64371b TT |
13075 | rs->buf.data () + strlen (rs->buf.data ()), |
13076 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13077 | putpkt (rs->buf); |
b6bb3468 | 13078 | remote_get_noisy_reply (); |
8d64371b | 13079 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13080 | warning (_("Target does not support source download.")); |
13081 | ||
13082 | if (cmd->control_type == while_control | |
13083 | || cmd->control_type == while_stepping_control) | |
13084 | { | |
12973681 | 13085 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 13086 | |
0df8b418 | 13087 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 13088 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 13089 | encode_source_string (num, addr, "cmd", "end", |
8d64371b TT |
13090 | rs->buf.data () + strlen (rs->buf.data ()), |
13091 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13092 | putpkt (rs->buf); |
b6bb3468 | 13093 | remote_get_noisy_reply (); |
8d64371b | 13094 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13095 | warning (_("Target does not support source download.")); |
13096 | } | |
13097 | } | |
13098 | } | |
13099 | ||
f6ac5f3d PA |
13100 | void |
13101 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc SS |
13102 | { |
13103 | CORE_ADDR tpaddr; | |
409873ef | 13104 | char addrbuf[40]; |
b44ec619 SM |
13105 | std::vector<std::string> tdp_actions; |
13106 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 13107 | char *pkt; |
e8ba3115 | 13108 | struct breakpoint *b = loc->owner; |
d9b3f62e | 13109 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 13110 | struct remote_state *rs = get_remote_state (); |
3df3a985 | 13111 | int ret; |
ff36536c | 13112 | const char *err_msg = _("Tracepoint packet too large for target."); |
3df3a985 PFC |
13113 | size_t size_left; |
13114 | ||
13115 | /* We use a buffer other than rs->buf because we'll build strings | |
13116 | across multiple statements, and other statements in between could | |
13117 | modify rs->buf. */ | |
13118 | gdb::char_vector buf (get_remote_packet_size ()); | |
35b1e5cc | 13119 | |
dc673c81 | 13120 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
13121 | |
13122 | tpaddr = loc->address; | |
53807e9f | 13123 | strcpy (addrbuf, phex (tpaddr, sizeof (CORE_ADDR))); |
3df3a985 PFC |
13124 | ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x", |
13125 | b->number, addrbuf, /* address */ | |
13126 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
13127 | t->step_count, t->pass_count); | |
13128 | ||
13129 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13130 | error ("%s", err_msg); |
3df3a985 | 13131 | |
e8ba3115 YQ |
13132 | /* Fast tracepoints are mostly handled by the target, but we can |
13133 | tell the target how big of an instruction block should be moved | |
13134 | around. */ | |
13135 | if (b->type == bp_fast_tracepoint) | |
13136 | { | |
13137 | /* Only test for support at download time; we may not know | |
13138 | target capabilities at definition time. */ | |
13139 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 13140 | { |
6b940e6a PL |
13141 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
13142 | NULL)) | |
3df3a985 PFC |
13143 | { |
13144 | size_left = buf.size () - strlen (buf.data ()); | |
13145 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13146 | size_left, ":F%x", | |
13147 | gdb_insn_length (loc->gdbarch, tpaddr)); | |
13148 | ||
13149 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13150 | error ("%s", err_msg); |
3df3a985 | 13151 | } |
35b1e5cc | 13152 | else |
e8ba3115 YQ |
13153 | /* If it passed validation at definition but fails now, |
13154 | something is very wrong. */ | |
13155 | internal_error (__FILE__, __LINE__, | |
13156 | _("Fast tracepoint not " | |
13157 | "valid during download")); | |
35b1e5cc | 13158 | } |
e8ba3115 YQ |
13159 | else |
13160 | /* Fast tracepoints are functionally identical to regular | |
13161 | tracepoints, so don't take lack of support as a reason to | |
13162 | give up on the trace run. */ | |
13163 | warning (_("Target does not support fast tracepoints, " | |
13164 | "downloading %d as regular tracepoint"), b->number); | |
13165 | } | |
13166 | else if (b->type == bp_static_tracepoint) | |
13167 | { | |
13168 | /* Only test for support at download time; we may not know | |
13169 | target capabilities at definition time. */ | |
13170 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 13171 | { |
e8ba3115 | 13172 | struct static_tracepoint_marker marker; |
0fb4aa4b | 13173 | |
e8ba3115 | 13174 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
3df3a985 PFC |
13175 | { |
13176 | size_left = buf.size () - strlen (buf.data ()); | |
13177 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13178 | size_left, ":S"); | |
13179 | ||
13180 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13181 | error ("%s", err_msg); |
3df3a985 | 13182 | } |
0fb4aa4b | 13183 | else |
e8ba3115 | 13184 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 13185 | } |
e8ba3115 YQ |
13186 | else |
13187 | /* Fast tracepoints are functionally identical to regular | |
13188 | tracepoints, so don't take lack of support as a reason | |
13189 | to give up on the trace run. */ | |
13190 | error (_("Target does not support static tracepoints")); | |
13191 | } | |
13192 | /* If the tracepoint has a conditional, make it into an agent | |
13193 | expression and append to the definition. */ | |
13194 | if (loc->cond) | |
13195 | { | |
13196 | /* Only test support at download time, we may not know target | |
13197 | capabilities at definition time. */ | |
13198 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 13199 | { |
3df3a985 PFC |
13200 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, |
13201 | loc->cond.get ()); | |
13202 | ||
13203 | size_left = buf.size () - strlen (buf.data ()); | |
13204 | ||
13205 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13206 | size_left, ":X%x,", aexpr->len); | |
13207 | ||
13208 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13209 | error ("%s", err_msg); |
3df3a985 PFC |
13210 | |
13211 | size_left = buf.size () - strlen (buf.data ()); | |
13212 | ||
13213 | /* Two bytes to encode each aexpr byte, plus the terminating | |
13214 | null byte. */ | |
13215 | if (aexpr->len * 2 + 1 > size_left) | |
a7f25a84 | 13216 | error ("%s", err_msg); |
3df3a985 PFC |
13217 | |
13218 | pkt = buf.data () + strlen (buf.data ()); | |
13219 | ||
b44ec619 | 13220 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
13221 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
13222 | *pkt = '\0'; | |
35b1e5cc | 13223 | } |
e8ba3115 YQ |
13224 | else |
13225 | warning (_("Target does not support conditional tracepoints, " | |
13226 | "ignoring tp %d cond"), b->number); | |
13227 | } | |
35b1e5cc | 13228 | |
d9b3f62e | 13229 | if (b->commands || *default_collect) |
3df3a985 PFC |
13230 | { |
13231 | size_left = buf.size () - strlen (buf.data ()); | |
13232 | ||
13233 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13234 | size_left, "-"); | |
13235 | ||
13236 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13237 | error ("%s", err_msg); |
3df3a985 PFC |
13238 | } |
13239 | ||
13240 | putpkt (buf.data ()); | |
b6bb3468 | 13241 | remote_get_noisy_reply (); |
8d64371b | 13242 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13243 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 13244 | |
e8ba3115 | 13245 | /* do_single_steps (t); */ |
b44ec619 SM |
13246 | for (auto action_it = tdp_actions.begin (); |
13247 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 13248 | { |
b44ec619 SM |
13249 | QUIT; /* Allow user to bail out with ^C. */ |
13250 | ||
aa6f3694 | 13251 | bool has_more = ((action_it + 1) != tdp_actions.end () |
b44ec619 SM |
13252 | || !stepping_actions.empty ()); |
13253 | ||
3df3a985 PFC |
13254 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c", |
13255 | b->number, addrbuf, /* address */ | |
13256 | action_it->c_str (), | |
13257 | has_more ? '-' : 0); | |
13258 | ||
13259 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13260 | error ("%s", err_msg); |
3df3a985 PFC |
13261 | |
13262 | putpkt (buf.data ()); | |
b44ec619 | 13263 | remote_get_noisy_reply (); |
8d64371b | 13264 | if (strcmp (rs->buf.data (), "OK")) |
b44ec619 | 13265 | error (_("Error on target while setting tracepoints.")); |
e8ba3115 | 13266 | } |
409873ef | 13267 | |
05abfc39 PFC |
13268 | for (auto action_it = stepping_actions.begin (); |
13269 | action_it != stepping_actions.end (); action_it++) | |
13270 | { | |
13271 | QUIT; /* Allow user to bail out with ^C. */ | |
13272 | ||
13273 | bool is_first = action_it == stepping_actions.begin (); | |
aa6f3694 | 13274 | bool has_more = (action_it + 1) != stepping_actions.end (); |
05abfc39 | 13275 | |
3df3a985 PFC |
13276 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s", |
13277 | b->number, addrbuf, /* address */ | |
13278 | is_first ? "S" : "", | |
13279 | action_it->c_str (), | |
13280 | has_more ? "-" : ""); | |
13281 | ||
13282 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13283 | error ("%s", err_msg); |
3df3a985 PFC |
13284 | |
13285 | putpkt (buf.data ()); | |
05abfc39 | 13286 | remote_get_noisy_reply (); |
8d64371b | 13287 | if (strcmp (rs->buf.data (), "OK")) |
05abfc39 PFC |
13288 | error (_("Error on target while setting tracepoints.")); |
13289 | } | |
b44ec619 | 13290 | |
4082afcc | 13291 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 13292 | { |
f00aae0f | 13293 | if (b->location != NULL) |
409873ef | 13294 | { |
3df3a985 PFC |
13295 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13296 | ||
13297 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13298 | error ("%s", err_msg); |
3df3a985 | 13299 | |
f00aae0f | 13300 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 13301 | event_location_to_string (b->location.get ()), |
3df3a985 PFC |
13302 | buf.data () + strlen (buf.data ()), |
13303 | buf.size () - strlen (buf.data ())); | |
13304 | putpkt (buf.data ()); | |
b6bb3468 | 13305 | remote_get_noisy_reply (); |
8d64371b | 13306 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13307 | warning (_("Target does not support source download.")); |
409873ef | 13308 | } |
e8ba3115 YQ |
13309 | if (b->cond_string) |
13310 | { | |
3df3a985 PFC |
13311 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13312 | ||
13313 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13314 | error ("%s", err_msg); |
3df3a985 | 13315 | |
e8ba3115 | 13316 | encode_source_string (b->number, loc->address, |
3df3a985 PFC |
13317 | "cond", b->cond_string, |
13318 | buf.data () + strlen (buf.data ()), | |
13319 | buf.size () - strlen (buf.data ())); | |
13320 | putpkt (buf.data ()); | |
b6bb3468 | 13321 | remote_get_noisy_reply (); |
8d64371b | 13322 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 YQ |
13323 | warning (_("Target does not support source download.")); |
13324 | } | |
13325 | remote_download_command_source (b->number, loc->address, | |
13326 | breakpoint_commands (b)); | |
35b1e5cc | 13327 | } |
35b1e5cc SS |
13328 | } |
13329 | ||
57810aa7 | 13330 | bool |
f6ac5f3d | 13331 | remote_target::can_download_tracepoint () |
1e4d1764 | 13332 | { |
1e51243a PA |
13333 | struct remote_state *rs = get_remote_state (); |
13334 | struct trace_status *ts; | |
13335 | int status; | |
13336 | ||
13337 | /* Don't try to install tracepoints until we've relocated our | |
13338 | symbols, and fetched and merged the target's tracepoint list with | |
13339 | ours. */ | |
13340 | if (rs->starting_up) | |
57810aa7 | 13341 | return false; |
1e51243a PA |
13342 | |
13343 | ts = current_trace_status (); | |
f6ac5f3d | 13344 | status = get_trace_status (ts); |
1e4d1764 YQ |
13345 | |
13346 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 13347 | return false; |
1e4d1764 YQ |
13348 | |
13349 | /* If we are in a tracing experiment, but remote stub doesn't support | |
13350 | installing tracepoint in trace, we have to return. */ | |
13351 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 13352 | return false; |
1e4d1764 | 13353 | |
57810aa7 | 13354 | return true; |
1e4d1764 YQ |
13355 | } |
13356 | ||
13357 | ||
f6ac5f3d PA |
13358 | void |
13359 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
13360 | { |
13361 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 13362 | char *p; |
35b1e5cc | 13363 | |
8d64371b | 13364 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
13365 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
13366 | tsv.builtin); | |
8d64371b TT |
13367 | p = rs->buf.data () + strlen (rs->buf.data ()); |
13368 | if ((p - rs->buf.data ()) + tsv.name.length () * 2 | |
13369 | >= get_remote_packet_size ()) | |
00bf0b85 | 13370 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 13371 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 13372 | *p++ = '\0'; |
35b1e5cc | 13373 | putpkt (rs->buf); |
b6bb3468 | 13374 | remote_get_noisy_reply (); |
8d64371b | 13375 | if (rs->buf[0] == '\0') |
ad91cd99 | 13376 | error (_("Target does not support this command.")); |
8d64371b | 13377 | if (strcmp (rs->buf.data (), "OK") != 0) |
ad91cd99 | 13378 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13379 | } |
13380 | ||
f6ac5f3d PA |
13381 | void |
13382 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13383 | { |
13384 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13385 | |
8d64371b | 13386 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTEnable:%x:%s", |
53807e9f TT |
13387 | location->owner->number, |
13388 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13389 | putpkt (rs->buf); |
b6bb3468 | 13390 | remote_get_noisy_reply (); |
8d64371b | 13391 | if (rs->buf[0] == '\0') |
d248b706 | 13392 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13393 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13394 | error (_("Error on target while enabling tracepoint.")); |
13395 | } | |
13396 | ||
f6ac5f3d PA |
13397 | void |
13398 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13399 | { |
13400 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13401 | |
8d64371b | 13402 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDisable:%x:%s", |
53807e9f TT |
13403 | location->owner->number, |
13404 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13405 | putpkt (rs->buf); |
b6bb3468 | 13406 | remote_get_noisy_reply (); |
8d64371b | 13407 | if (rs->buf[0] == '\0') |
d248b706 | 13408 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13409 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13410 | error (_("Error on target while disabling tracepoint.")); |
13411 | } | |
13412 | ||
f6ac5f3d PA |
13413 | void |
13414 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13415 | { |
13416 | asection *s; | |
13417 | bfd_size_type size; | |
608bcef2 | 13418 | bfd_vma vma; |
35b1e5cc | 13419 | int anysecs = 0; |
c2fa21f1 | 13420 | int offset = 0; |
35b1e5cc | 13421 | |
7e10abd1 | 13422 | if (!current_program_space->exec_bfd ()) |
35b1e5cc SS |
13423 | return; /* No information to give. */ |
13424 | ||
b6bb3468 PA |
13425 | struct remote_state *rs = get_remote_state (); |
13426 | ||
8d64371b TT |
13427 | strcpy (rs->buf.data (), "QTro"); |
13428 | offset = strlen (rs->buf.data ()); | |
7e10abd1 | 13429 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
35b1e5cc SS |
13430 | { |
13431 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13432 | int sec_length; |
35b1e5cc SS |
13433 | |
13434 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 13435 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
13436 | (s->flags & SEC_READONLY) == 0) |
13437 | continue; | |
13438 | ||
13439 | anysecs = 1; | |
fd361982 AM |
13440 | vma = bfd_section_vma (s); |
13441 | size = bfd_section_size (s); | |
608bcef2 HZ |
13442 | sprintf_vma (tmp1, vma); |
13443 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 13444 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
8d64371b | 13445 | if (offset + sec_length + 1 > rs->buf.size ()) |
c2fa21f1 | 13446 | { |
4082afcc | 13447 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 13448 | warning (_("\ |
c2fa21f1 HZ |
13449 | Too many sections for read-only sections definition packet.")); |
13450 | break; | |
13451 | } | |
8d64371b | 13452 | xsnprintf (rs->buf.data () + offset, rs->buf.size () - offset, ":%s,%s", |
bba74b36 | 13453 | tmp1, tmp2); |
c2fa21f1 | 13454 | offset += sec_length; |
35b1e5cc SS |
13455 | } |
13456 | if (anysecs) | |
13457 | { | |
b6bb3468 | 13458 | putpkt (rs->buf); |
8d64371b | 13459 | getpkt (&rs->buf, 0); |
35b1e5cc SS |
13460 | } |
13461 | } | |
13462 | ||
f6ac5f3d PA |
13463 | void |
13464 | remote_target::trace_start () | |
35b1e5cc | 13465 | { |
b6bb3468 PA |
13466 | struct remote_state *rs = get_remote_state (); |
13467 | ||
35b1e5cc | 13468 | putpkt ("QTStart"); |
b6bb3468 | 13469 | remote_get_noisy_reply (); |
8d64371b | 13470 | if (rs->buf[0] == '\0') |
ad91cd99 | 13471 | error (_("Target does not support this command.")); |
8d64371b TT |
13472 | if (strcmp (rs->buf.data (), "OK") != 0) |
13473 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13474 | } |
13475 | ||
f6ac5f3d PA |
13476 | int |
13477 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13478 | { |
953b98d1 | 13479 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13480 | char *p = NULL; |
bd3eecc3 | 13481 | enum packet_result result; |
b6bb3468 | 13482 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13483 | |
4082afcc | 13484 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13485 | return -1; |
a744cf53 | 13486 | |
7b9a15e1 | 13487 | /* FIXME we need to get register block size some other way. */ |
5cd63fda | 13488 | trace_regblock_size |
9d6eea31 | 13489 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 13490 | |
049dc89b JK |
13491 | putpkt ("qTStatus"); |
13492 | ||
a70b8144 | 13493 | try |
67f41397 | 13494 | { |
b6bb3468 | 13495 | p = remote_get_noisy_reply (); |
67f41397 | 13496 | } |
230d2906 | 13497 | catch (const gdb_exception_error &ex) |
67f41397 | 13498 | { |
598d3636 JK |
13499 | if (ex.error != TARGET_CLOSE_ERROR) |
13500 | { | |
13501 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13502 | return -1; | |
13503 | } | |
eedc3f4f | 13504 | throw; |
67f41397 | 13505 | } |
00bf0b85 | 13506 | |
bd3eecc3 PA |
13507 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
13508 | ||
00bf0b85 | 13509 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13510 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13511 | return -1; |
35b1e5cc | 13512 | |
00bf0b85 | 13513 | /* We're working with a live target. */ |
f5911ea1 | 13514 | ts->filename = NULL; |
00bf0b85 | 13515 | |
00bf0b85 | 13516 | if (*p++ != 'T') |
8d64371b | 13517 | error (_("Bogus trace status reply from target: %s"), rs->buf.data ()); |
35b1e5cc | 13518 | |
84cebc4a YQ |
13519 | /* Function 'parse_trace_status' sets default value of each field of |
13520 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13521 | parse_trace_status (p, ts); |
13522 | ||
13523 | return ts->running; | |
35b1e5cc SS |
13524 | } |
13525 | ||
f6ac5f3d PA |
13526 | void |
13527 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13528 | struct uploaded_tp *utp) | |
f196051f SS |
13529 | { |
13530 | struct remote_state *rs = get_remote_state (); | |
f196051f | 13531 | char *reply; |
f196051f | 13532 | struct tracepoint *tp = (struct tracepoint *) bp; |
bba74b36 | 13533 | size_t size = get_remote_packet_size (); |
f196051f SS |
13534 | |
13535 | if (tp) | |
13536 | { | |
c1fc2657 | 13537 | tp->hit_count = 0; |
f196051f | 13538 | tp->traceframe_usage = 0; |
40cb8ca5 | 13539 | for (bp_location *loc : tp->locations ()) |
f196051f SS |
13540 | { |
13541 | /* If the tracepoint was never downloaded, don't go asking for | |
13542 | any status. */ | |
13543 | if (tp->number_on_target == 0) | |
13544 | continue; | |
8d64371b | 13545 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", tp->number_on_target, |
bba74b36 | 13546 | phex_nz (loc->address, 0)); |
f196051f | 13547 | putpkt (rs->buf); |
b6bb3468 | 13548 | reply = remote_get_noisy_reply (); |
f196051f SS |
13549 | if (reply && *reply) |
13550 | { | |
13551 | if (*reply == 'V') | |
13552 | parse_tracepoint_status (reply + 1, bp, utp); | |
13553 | } | |
13554 | } | |
13555 | } | |
13556 | else if (utp) | |
13557 | { | |
13558 | utp->hit_count = 0; | |
13559 | utp->traceframe_usage = 0; | |
8d64371b | 13560 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", utp->number, |
bba74b36 | 13561 | phex_nz (utp->addr, 0)); |
f196051f | 13562 | putpkt (rs->buf); |
b6bb3468 | 13563 | reply = remote_get_noisy_reply (); |
f196051f SS |
13564 | if (reply && *reply) |
13565 | { | |
13566 | if (*reply == 'V') | |
13567 | parse_tracepoint_status (reply + 1, bp, utp); | |
13568 | } | |
13569 | } | |
13570 | } | |
13571 | ||
f6ac5f3d PA |
13572 | void |
13573 | remote_target::trace_stop () | |
35b1e5cc | 13574 | { |
b6bb3468 PA |
13575 | struct remote_state *rs = get_remote_state (); |
13576 | ||
35b1e5cc | 13577 | putpkt ("QTStop"); |
b6bb3468 | 13578 | remote_get_noisy_reply (); |
8d64371b | 13579 | if (rs->buf[0] == '\0') |
ad91cd99 | 13580 | error (_("Target does not support this command.")); |
8d64371b TT |
13581 | if (strcmp (rs->buf.data (), "OK") != 0) |
13582 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13583 | } |
13584 | ||
f6ac5f3d PA |
13585 | int |
13586 | remote_target::trace_find (enum trace_find_type type, int num, | |
13587 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13588 | int *tpp) | |
35b1e5cc SS |
13589 | { |
13590 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 13591 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
35b1e5cc SS |
13592 | char *p, *reply; |
13593 | int target_frameno = -1, target_tracept = -1; | |
13594 | ||
e6e4e701 PA |
13595 | /* Lookups other than by absolute frame number depend on the current |
13596 | trace selected, so make sure it is correct on the remote end | |
13597 | first. */ | |
13598 | if (type != tfind_number) | |
13599 | set_remote_traceframe (); | |
13600 | ||
8d64371b | 13601 | p = rs->buf.data (); |
35b1e5cc SS |
13602 | strcpy (p, "QTFrame:"); |
13603 | p = strchr (p, '\0'); | |
13604 | switch (type) | |
13605 | { | |
13606 | case tfind_number: | |
bba74b36 | 13607 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13608 | break; |
13609 | case tfind_pc: | |
bba74b36 | 13610 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13611 | break; |
13612 | case tfind_tp: | |
bba74b36 | 13613 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13614 | break; |
13615 | case tfind_range: | |
bba74b36 YQ |
13616 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13617 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13618 | break; |
13619 | case tfind_outside: | |
bba74b36 YQ |
13620 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13621 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13622 | break; |
13623 | default: | |
9b20d036 | 13624 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13625 | } |
13626 | ||
13627 | putpkt (rs->buf); | |
b6bb3468 | 13628 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13629 | if (*reply == '\0') |
13630 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13631 | |
13632 | while (reply && *reply) | |
13633 | switch (*reply) | |
13634 | { | |
13635 | case 'F': | |
f197e0f1 VP |
13636 | p = ++reply; |
13637 | target_frameno = (int) strtol (p, &reply, 16); | |
13638 | if (reply == p) | |
13639 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13640 | /* Don't update our remote traceframe number cache on failure |
13641 | to select a remote traceframe. */ | |
f197e0f1 VP |
13642 | if (target_frameno == -1) |
13643 | return -1; | |
35b1e5cc SS |
13644 | break; |
13645 | case 'T': | |
f197e0f1 VP |
13646 | p = ++reply; |
13647 | target_tracept = (int) strtol (p, &reply, 16); | |
13648 | if (reply == p) | |
13649 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13650 | break; |
13651 | case 'O': /* "OK"? */ | |
13652 | if (reply[1] == 'K' && reply[2] == '\0') | |
13653 | reply += 2; | |
13654 | else | |
13655 | error (_("Bogus reply from target: %s"), reply); | |
13656 | break; | |
13657 | default: | |
13658 | error (_("Bogus reply from target: %s"), reply); | |
13659 | } | |
13660 | if (tpp) | |
13661 | *tpp = target_tracept; | |
e6e4e701 | 13662 | |
262e1174 | 13663 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13664 | return target_frameno; |
13665 | } | |
13666 | ||
57810aa7 | 13667 | bool |
f6ac5f3d | 13668 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13669 | { |
13670 | struct remote_state *rs = get_remote_state (); | |
13671 | char *reply; | |
13672 | ULONGEST uval; | |
13673 | ||
e6e4e701 PA |
13674 | set_remote_traceframe (); |
13675 | ||
8d64371b | 13676 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13677 | putpkt (rs->buf); |
b6bb3468 | 13678 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13679 | if (reply && *reply) |
13680 | { | |
13681 | if (*reply == 'V') | |
13682 | { | |
13683 | unpack_varlen_hex (reply + 1, &uval); | |
13684 | *val = (LONGEST) uval; | |
57810aa7 | 13685 | return true; |
35b1e5cc SS |
13686 | } |
13687 | } | |
57810aa7 | 13688 | return false; |
35b1e5cc SS |
13689 | } |
13690 | ||
f6ac5f3d PA |
13691 | int |
13692 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13693 | { |
13694 | struct remote_state *rs = get_remote_state (); | |
13695 | char *p, *reply; | |
13696 | ||
8d64371b | 13697 | p = rs->buf.data (); |
00bf0b85 SS |
13698 | strcpy (p, "QTSave:"); |
13699 | p += strlen (p); | |
8d64371b TT |
13700 | if ((p - rs->buf.data ()) + strlen (filename) * 2 |
13701 | >= get_remote_packet_size ()) | |
00bf0b85 | 13702 | error (_("Remote file name too long for trace save packet")); |
9f1b45b0 | 13703 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13704 | *p++ = '\0'; |
13705 | putpkt (rs->buf); | |
b6bb3468 | 13706 | reply = remote_get_noisy_reply (); |
d6c5869f | 13707 | if (*reply == '\0') |
ad91cd99 PA |
13708 | error (_("Target does not support this command.")); |
13709 | if (strcmp (reply, "OK") != 0) | |
13710 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13711 | return 0; |
13712 | } | |
13713 | ||
13714 | /* This is basically a memory transfer, but needs to be its own packet | |
13715 | because we don't know how the target actually organizes its trace | |
13716 | memory, plus we want to be able to ask for as much as possible, but | |
13717 | not be unhappy if we don't get as much as we ask for. */ | |
13718 | ||
f6ac5f3d PA |
13719 | LONGEST |
13720 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13721 | { |
13722 | struct remote_state *rs = get_remote_state (); | |
13723 | char *reply; | |
13724 | char *p; | |
13725 | int rslt; | |
13726 | ||
8d64371b | 13727 | p = rs->buf.data (); |
00bf0b85 SS |
13728 | strcpy (p, "qTBuffer:"); |
13729 | p += strlen (p); | |
13730 | p += hexnumstr (p, offset); | |
13731 | *p++ = ','; | |
13732 | p += hexnumstr (p, len); | |
13733 | *p++ = '\0'; | |
13734 | ||
13735 | putpkt (rs->buf); | |
b6bb3468 | 13736 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13737 | if (reply && *reply) |
13738 | { | |
13739 | /* 'l' by itself means we're at the end of the buffer and | |
13740 | there is nothing more to get. */ | |
13741 | if (*reply == 'l') | |
13742 | return 0; | |
13743 | ||
13744 | /* Convert the reply into binary. Limit the number of bytes to | |
13745 | convert according to our passed-in buffer size, rather than | |
13746 | what was returned in the packet; if the target is | |
13747 | unexpectedly generous and gives us a bigger reply than we | |
13748 | asked for, we don't want to crash. */ | |
b6bb3468 | 13749 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13750 | return rslt; |
13751 | } | |
13752 | ||
13753 | /* Something went wrong, flag as an error. */ | |
13754 | return -1; | |
13755 | } | |
13756 | ||
f6ac5f3d PA |
13757 | void |
13758 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13759 | { |
13760 | struct remote_state *rs = get_remote_state (); | |
13761 | ||
4082afcc | 13762 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13763 | { |
ad91cd99 PA |
13764 | char *reply; |
13765 | ||
8d64371b TT |
13766 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13767 | "QTDisconnected:%x", val); | |
33da3f1c | 13768 | putpkt (rs->buf); |
b6bb3468 | 13769 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13770 | if (*reply == '\0') |
33da3f1c | 13771 | error (_("Target does not support this command.")); |
ad91cd99 | 13772 | if (strcmp (reply, "OK") != 0) |
dda83cd7 | 13773 | error (_("Bogus reply from target: %s"), reply); |
33da3f1c SS |
13774 | } |
13775 | else if (val) | |
13776 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13777 | } |
13778 | ||
f6ac5f3d PA |
13779 | int |
13780 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c | 13781 | { |
5b6d1e4f | 13782 | thread_info *info = find_thread_ptid (this, ptid); |
a744cf53 | 13783 | |
7aabaf9d SM |
13784 | if (info != NULL && info->priv != NULL) |
13785 | return get_remote_thread_info (info)->core; | |
13786 | ||
dc146f7c VP |
13787 | return -1; |
13788 | } | |
13789 | ||
f6ac5f3d PA |
13790 | void |
13791 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13792 | { |
13793 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13794 | char *reply; |
4daf5ac0 | 13795 | |
8d64371b TT |
13796 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13797 | "QTBuffer:circular:%x", val); | |
4daf5ac0 | 13798 | putpkt (rs->buf); |
b6bb3468 | 13799 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13800 | if (*reply == '\0') |
4daf5ac0 | 13801 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13802 | if (strcmp (reply, "OK") != 0) |
13803 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13804 | } |
13805 | ||
f6ac5f3d PA |
13806 | traceframe_info_up |
13807 | remote_target::traceframe_info () | |
b3b9301e | 13808 | { |
9018be22 | 13809 | gdb::optional<gdb::char_vector> text |
328d42d8 SM |
13810 | = target_read_stralloc (current_inferior ()->top_target (), |
13811 | TARGET_OBJECT_TRACEFRAME_INFO, | |
b7b030ad | 13812 | NULL); |
9018be22 SM |
13813 | if (text) |
13814 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13815 | |
13816 | return NULL; | |
13817 | } | |
13818 | ||
405f8e94 SS |
13819 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13820 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13821 | if the packet is not supported, and 0 if the minimum instruction | |
13822 | length is unknown. */ | |
13823 | ||
f6ac5f3d PA |
13824 | int |
13825 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13826 | { |
13827 | struct remote_state *rs = get_remote_state (); | |
13828 | char *reply; | |
13829 | ||
e886a173 PA |
13830 | /* If we're not debugging a process yet, the IPA can't be |
13831 | loaded. */ | |
55f6301a | 13832 | if (!target_has_execution ()) |
e886a173 PA |
13833 | return 0; |
13834 | ||
13835 | /* Make sure the remote is pointing at the right process. */ | |
13836 | set_general_process (); | |
13837 | ||
8d64371b | 13838 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13839 | putpkt (rs->buf); |
b6bb3468 | 13840 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13841 | if (*reply == '\0') |
13842 | return -1; | |
13843 | else | |
13844 | { | |
13845 | ULONGEST min_insn_len; | |
13846 | ||
13847 | unpack_varlen_hex (reply, &min_insn_len); | |
13848 | ||
13849 | return (int) min_insn_len; | |
13850 | } | |
13851 | } | |
13852 | ||
f6ac5f3d PA |
13853 | void |
13854 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13855 | { |
4082afcc | 13856 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13857 | { |
13858 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13859 | char *buf = rs->buf.data (); |
13860 | char *endbuf = buf + get_remote_packet_size (); | |
f6f899bf HAQ |
13861 | enum packet_result result; |
13862 | ||
13863 | gdb_assert (val >= 0 || val == -1); | |
13864 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13865 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13866 | if (val < 0) | |
13867 | { | |
13868 | *buf++ = '-'; | |
dda83cd7 | 13869 | buf += hexnumstr (buf, (ULONGEST) -val); |
f6f899bf HAQ |
13870 | } |
13871 | else | |
13872 | buf += hexnumstr (buf, (ULONGEST) val); | |
13873 | ||
13874 | putpkt (rs->buf); | |
b6bb3468 | 13875 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13876 | result = packet_ok (rs->buf, |
13877 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13878 | ||
13879 | if (result != PACKET_OK) | |
8d64371b | 13880 | warning (_("Bogus reply from target: %s"), rs->buf.data ()); |
f6f899bf HAQ |
13881 | } |
13882 | } | |
13883 | ||
57810aa7 | 13884 | bool |
f6ac5f3d PA |
13885 | remote_target::set_trace_notes (const char *user, const char *notes, |
13886 | const char *stop_notes) | |
f196051f SS |
13887 | { |
13888 | struct remote_state *rs = get_remote_state (); | |
13889 | char *reply; | |
8d64371b TT |
13890 | char *buf = rs->buf.data (); |
13891 | char *endbuf = buf + get_remote_packet_size (); | |
f196051f SS |
13892 | int nbytes; |
13893 | ||
13894 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13895 | if (user) | |
13896 | { | |
13897 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13898 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13899 | buf += 2 * nbytes; |
13900 | *buf++ = ';'; | |
13901 | } | |
13902 | if (notes) | |
13903 | { | |
13904 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13905 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13906 | buf += 2 * nbytes; |
13907 | *buf++ = ';'; | |
13908 | } | |
13909 | if (stop_notes) | |
13910 | { | |
13911 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13912 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13913 | buf += 2 * nbytes; |
13914 | *buf++ = ';'; | |
13915 | } | |
13916 | /* Ensure the buffer is terminated. */ | |
13917 | *buf = '\0'; | |
13918 | ||
13919 | putpkt (rs->buf); | |
b6bb3468 | 13920 | reply = remote_get_noisy_reply (); |
f196051f | 13921 | if (*reply == '\0') |
57810aa7 | 13922 | return false; |
f196051f SS |
13923 | |
13924 | if (strcmp (reply, "OK") != 0) | |
13925 | error (_("Bogus reply from target: %s"), reply); | |
13926 | ||
57810aa7 | 13927 | return true; |
f196051f SS |
13928 | } |
13929 | ||
57810aa7 PA |
13930 | bool |
13931 | remote_target::use_agent (bool use) | |
d1feda86 | 13932 | { |
4082afcc | 13933 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13934 | { |
13935 | struct remote_state *rs = get_remote_state (); | |
13936 | ||
13937 | /* If the stub supports QAgent. */ | |
8d64371b | 13938 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 | 13939 | putpkt (rs->buf); |
8d64371b | 13940 | getpkt (&rs->buf, 0); |
d1feda86 | 13941 | |
8d64371b | 13942 | if (strcmp (rs->buf.data (), "OK") == 0) |
d1feda86 | 13943 | { |
f6ac5f3d | 13944 | ::use_agent = use; |
57810aa7 | 13945 | return true; |
d1feda86 YQ |
13946 | } |
13947 | } | |
13948 | ||
57810aa7 | 13949 | return false; |
d1feda86 YQ |
13950 | } |
13951 | ||
57810aa7 | 13952 | bool |
f6ac5f3d | 13953 | remote_target::can_use_agent () |
d1feda86 | 13954 | { |
4082afcc | 13955 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13956 | } |
13957 | ||
9accd112 MM |
13958 | struct btrace_target_info |
13959 | { | |
13960 | /* The ptid of the traced thread. */ | |
13961 | ptid_t ptid; | |
f4abbc16 MM |
13962 | |
13963 | /* The obtained branch trace configuration. */ | |
13964 | struct btrace_config conf; | |
9accd112 MM |
13965 | }; |
13966 | ||
f4abbc16 MM |
13967 | /* Reset our idea of our target's btrace configuration. */ |
13968 | ||
13969 | static void | |
6b8edb51 | 13970 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 13971 | { |
f4abbc16 MM |
13972 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
13973 | } | |
13974 | ||
f4abbc16 MM |
13975 | /* Synchronize the configuration with the target. */ |
13976 | ||
6b8edb51 PA |
13977 | void |
13978 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 13979 | { |
d33501a5 MM |
13980 | struct packet_config *packet; |
13981 | struct remote_state *rs; | |
13982 | char *buf, *pos, *endbuf; | |
13983 | ||
13984 | rs = get_remote_state (); | |
8d64371b | 13985 | buf = rs->buf.data (); |
d33501a5 MM |
13986 | endbuf = buf + get_remote_packet_size (); |
13987 | ||
13988 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13989 | if (packet_config_support (packet) == PACKET_ENABLE | |
13990 | && conf->bts.size != rs->btrace_config.bts.size) | |
13991 | { | |
13992 | pos = buf; | |
13993 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
dda83cd7 | 13994 | conf->bts.size); |
d33501a5 MM |
13995 | |
13996 | putpkt (buf); | |
8d64371b | 13997 | getpkt (&rs->buf, 0); |
d33501a5 MM |
13998 | |
13999 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
14000 | { | |
14001 | if (buf[0] == 'E' && buf[1] == '.') | |
14002 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
14003 | else | |
14004 | error (_("Failed to configure the BTS buffer size.")); | |
14005 | } | |
14006 | ||
14007 | rs->btrace_config.bts.size = conf->bts.size; | |
14008 | } | |
b20a6524 MM |
14009 | |
14010 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
14011 | if (packet_config_support (packet) == PACKET_ENABLE | |
14012 | && conf->pt.size != rs->btrace_config.pt.size) | |
14013 | { | |
14014 | pos = buf; | |
14015 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
dda83cd7 | 14016 | conf->pt.size); |
b20a6524 MM |
14017 | |
14018 | putpkt (buf); | |
8d64371b | 14019 | getpkt (&rs->buf, 0); |
b20a6524 MM |
14020 | |
14021 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
14022 | { | |
14023 | if (buf[0] == 'E' && buf[1] == '.') | |
14024 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
14025 | else | |
14026 | error (_("Failed to configure the trace buffer size.")); | |
14027 | } | |
14028 | ||
14029 | rs->btrace_config.pt.size = conf->pt.size; | |
14030 | } | |
f4abbc16 MM |
14031 | } |
14032 | ||
14033 | /* Read the current thread's btrace configuration from the target and | |
14034 | store it into CONF. */ | |
14035 | ||
14036 | static void | |
14037 | btrace_read_config (struct btrace_config *conf) | |
14038 | { | |
9018be22 | 14039 | gdb::optional<gdb::char_vector> xml |
328d42d8 SM |
14040 | = target_read_stralloc (current_inferior ()->top_target (), |
14041 | TARGET_OBJECT_BTRACE_CONF, ""); | |
9018be22 SM |
14042 | if (xml) |
14043 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
14044 | } |
14045 | ||
c0272db5 TW |
14046 | /* Maybe reopen target btrace. */ |
14047 | ||
6b8edb51 PA |
14048 | void |
14049 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
14050 | { |
14051 | struct remote_state *rs = get_remote_state (); | |
c0272db5 | 14052 | int btrace_target_pushed = 0; |
15766370 | 14053 | #if !defined (HAVE_LIBIPT) |
c0272db5 | 14054 | int warned = 0; |
15766370 | 14055 | #endif |
c0272db5 | 14056 | |
aedbe3bb CM |
14057 | /* Don't bother walking the entirety of the remote thread list when |
14058 | we know the feature isn't supported by the remote. */ | |
14059 | if (packet_support (PACKET_qXfer_btrace_conf) != PACKET_ENABLE) | |
14060 | return; | |
14061 | ||
5ed8105e PA |
14062 | scoped_restore_current_thread restore_thread; |
14063 | ||
5b6d1e4f | 14064 | for (thread_info *tp : all_non_exited_threads (this)) |
c0272db5 TW |
14065 | { |
14066 | set_general_thread (tp->ptid); | |
14067 | ||
14068 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
14069 | btrace_read_config (&rs->btrace_config); | |
14070 | ||
14071 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
14072 | continue; | |
14073 | ||
14074 | #if !defined (HAVE_LIBIPT) | |
14075 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
14076 | { | |
14077 | if (!warned) | |
14078 | { | |
14079 | warned = 1; | |
c4e12631 MM |
14080 | warning (_("Target is recording using Intel Processor Trace " |
14081 | "but support was disabled at compile time.")); | |
c0272db5 TW |
14082 | } |
14083 | ||
14084 | continue; | |
14085 | } | |
14086 | #endif /* !defined (HAVE_LIBIPT) */ | |
14087 | ||
14088 | /* Push target, once, but before anything else happens. This way our | |
14089 | changes to the threads will be cleaned up by unpushing the target | |
14090 | in case btrace_read_config () throws. */ | |
14091 | if (!btrace_target_pushed) | |
14092 | { | |
14093 | btrace_target_pushed = 1; | |
14094 | record_btrace_push_target (); | |
14095 | printf_filtered (_("Target is recording using %s.\n"), | |
14096 | btrace_format_string (rs->btrace_config.format)); | |
14097 | } | |
14098 | ||
14099 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
14100 | tp->btrace.target->ptid = tp->ptid; | |
14101 | tp->btrace.target->conf = rs->btrace_config; | |
14102 | } | |
c0272db5 TW |
14103 | } |
14104 | ||
9accd112 MM |
14105 | /* Enable branch tracing. */ |
14106 | ||
f6ac5f3d PA |
14107 | struct btrace_target_info * |
14108 | remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf) | |
9accd112 MM |
14109 | { |
14110 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 14111 | struct packet_config *packet = NULL; |
9accd112 | 14112 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
14113 | char *buf = rs->buf.data (); |
14114 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14115 | |
b20a6524 MM |
14116 | switch (conf->format) |
14117 | { | |
14118 | case BTRACE_FORMAT_BTS: | |
14119 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
14120 | break; | |
14121 | ||
14122 | case BTRACE_FORMAT_PT: | |
14123 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
14124 | break; | |
14125 | } | |
14126 | ||
14127 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
14128 | error (_("Target does not support branch tracing.")); |
14129 | ||
f4abbc16 MM |
14130 | btrace_sync_conf (conf); |
14131 | ||
9accd112 MM |
14132 | set_general_thread (ptid); |
14133 | ||
14134 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
14135 | putpkt (rs->buf); | |
8d64371b | 14136 | getpkt (&rs->buf, 0); |
9accd112 MM |
14137 | |
14138 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
14139 | { | |
14140 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14141 | error (_("Could not enable branch tracing for %s: %s"), | |
a068643d | 14142 | target_pid_to_str (ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14143 | else |
14144 | error (_("Could not enable branch tracing for %s."), | |
a068643d | 14145 | target_pid_to_str (ptid).c_str ()); |
9accd112 MM |
14146 | } |
14147 | ||
8d749320 | 14148 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
14149 | tinfo->ptid = ptid; |
14150 | ||
f4abbc16 MM |
14151 | /* If we fail to read the configuration, we lose some information, but the |
14152 | tracing itself is not impacted. */ | |
a70b8144 | 14153 | try |
492d29ea PA |
14154 | { |
14155 | btrace_read_config (&tinfo->conf); | |
14156 | } | |
230d2906 | 14157 | catch (const gdb_exception_error &err) |
492d29ea PA |
14158 | { |
14159 | if (err.message != NULL) | |
3d6e9d23 | 14160 | warning ("%s", err.what ()); |
492d29ea | 14161 | } |
f4abbc16 | 14162 | |
9accd112 MM |
14163 | return tinfo; |
14164 | } | |
14165 | ||
14166 | /* Disable branch tracing. */ | |
14167 | ||
f6ac5f3d PA |
14168 | void |
14169 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14170 | { |
14171 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
14172 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
14173 | char *buf = rs->buf.data (); |
14174 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14175 | |
4082afcc | 14176 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14177 | error (_("Target does not support branch tracing.")); |
14178 | ||
14179 | set_general_thread (tinfo->ptid); | |
14180 | ||
14181 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
14182 | putpkt (rs->buf); | |
8d64371b | 14183 | getpkt (&rs->buf, 0); |
9accd112 MM |
14184 | |
14185 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
14186 | { | |
14187 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14188 | error (_("Could not disable branch tracing for %s: %s"), | |
a068643d | 14189 | target_pid_to_str (tinfo->ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14190 | else |
14191 | error (_("Could not disable branch tracing for %s."), | |
a068643d | 14192 | target_pid_to_str (tinfo->ptid).c_str ()); |
9accd112 MM |
14193 | } |
14194 | ||
14195 | xfree (tinfo); | |
14196 | } | |
14197 | ||
14198 | /* Teardown branch tracing. */ | |
14199 | ||
f6ac5f3d PA |
14200 | void |
14201 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14202 | { |
14203 | /* We must not talk to the target during teardown. */ | |
14204 | xfree (tinfo); | |
14205 | } | |
14206 | ||
14207 | /* Read the branch trace. */ | |
14208 | ||
f6ac5f3d PA |
14209 | enum btrace_error |
14210 | remote_target::read_btrace (struct btrace_data *btrace, | |
14211 | struct btrace_target_info *tinfo, | |
14212 | enum btrace_read_type type) | |
9accd112 MM |
14213 | { |
14214 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 14215 | const char *annex; |
9accd112 | 14216 | |
4082afcc | 14217 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14218 | error (_("Target does not support branch tracing.")); |
14219 | ||
14220 | #if !defined(HAVE_LIBEXPAT) | |
14221 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
14222 | #endif | |
14223 | ||
14224 | switch (type) | |
14225 | { | |
864089d2 | 14226 | case BTRACE_READ_ALL: |
9accd112 MM |
14227 | annex = "all"; |
14228 | break; | |
864089d2 | 14229 | case BTRACE_READ_NEW: |
9accd112 MM |
14230 | annex = "new"; |
14231 | break; | |
969c39fb MM |
14232 | case BTRACE_READ_DELTA: |
14233 | annex = "delta"; | |
14234 | break; | |
9accd112 MM |
14235 | default: |
14236 | internal_error (__FILE__, __LINE__, | |
14237 | _("Bad branch tracing read type: %u."), | |
14238 | (unsigned int) type); | |
14239 | } | |
14240 | ||
9018be22 | 14241 | gdb::optional<gdb::char_vector> xml |
328d42d8 SM |
14242 | = target_read_stralloc (current_inferior ()->top_target (), |
14243 | TARGET_OBJECT_BTRACE, annex); | |
9018be22 | 14244 | if (!xml) |
969c39fb | 14245 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 14246 | |
9018be22 | 14247 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 14248 | |
969c39fb | 14249 | return BTRACE_ERR_NONE; |
9accd112 MM |
14250 | } |
14251 | ||
f6ac5f3d PA |
14252 | const struct btrace_config * |
14253 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
14254 | { |
14255 | return &tinfo->conf; | |
14256 | } | |
14257 | ||
57810aa7 | 14258 | bool |
f6ac5f3d | 14259 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 14260 | { |
4082afcc PA |
14261 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
14262 | == PACKET_ENABLE); | |
ced63ec0 GB |
14263 | } |
14264 | ||
9dd130a0 TT |
14265 | /* Implementation of to_load. */ |
14266 | ||
f6ac5f3d PA |
14267 | void |
14268 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
14269 | { |
14270 | generic_load (name, from_tty); | |
14271 | } | |
14272 | ||
c78fa86a GB |
14273 | /* Accepts an integer PID; returns a string representing a file that |
14274 | can be opened on the remote side to get the symbols for the child | |
14275 | process. Returns NULL if the operation is not supported. */ | |
14276 | ||
f6ac5f3d PA |
14277 | char * |
14278 | remote_target::pid_to_exec_file (int pid) | |
c78fa86a | 14279 | { |
9018be22 | 14280 | static gdb::optional<gdb::char_vector> filename; |
835205d0 | 14281 | char *annex = NULL; |
c78fa86a GB |
14282 | |
14283 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
14284 | return NULL; | |
14285 | ||
5b6d1e4f | 14286 | inferior *inf = find_inferior_pid (this, pid); |
835205d0 GB |
14287 | if (inf == NULL) |
14288 | internal_error (__FILE__, __LINE__, | |
14289 | _("not currently attached to process %d"), pid); | |
14290 | ||
14291 | if (!inf->fake_pid_p) | |
14292 | { | |
14293 | const int annex_size = 9; | |
14294 | ||
224c3ddb | 14295 | annex = (char *) alloca (annex_size); |
835205d0 GB |
14296 | xsnprintf (annex, annex_size, "%x", pid); |
14297 | } | |
14298 | ||
328d42d8 | 14299 | filename = target_read_stralloc (current_inferior ()->top_target (), |
c78fa86a GB |
14300 | TARGET_OBJECT_EXEC_FILE, annex); |
14301 | ||
9018be22 | 14302 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
14303 | } |
14304 | ||
750ce8d1 YQ |
14305 | /* Implement the to_can_do_single_step target_ops method. */ |
14306 | ||
f6ac5f3d PA |
14307 | int |
14308 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
14309 | { |
14310 | /* We can only tell whether target supports single step or not by | |
14311 | supported s and S vCont actions if the stub supports vContSupported | |
14312 | feature. If the stub doesn't support vContSupported feature, | |
14313 | we have conservatively to think target doesn't supports single | |
14314 | step. */ | |
14315 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
14316 | { | |
14317 | struct remote_state *rs = get_remote_state (); | |
14318 | ||
14319 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
6b8edb51 | 14320 | remote_vcont_probe (); |
750ce8d1 YQ |
14321 | |
14322 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
14323 | } | |
14324 | else | |
14325 | return 0; | |
14326 | } | |
14327 | ||
3a00c802 PA |
14328 | /* Implementation of the to_execution_direction method for the remote |
14329 | target. */ | |
14330 | ||
f6ac5f3d PA |
14331 | enum exec_direction_kind |
14332 | remote_target::execution_direction () | |
3a00c802 PA |
14333 | { |
14334 | struct remote_state *rs = get_remote_state (); | |
14335 | ||
14336 | return rs->last_resume_exec_dir; | |
14337 | } | |
14338 | ||
f6327dcb KB |
14339 | /* Return pointer to the thread_info struct which corresponds to |
14340 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
14341 | ||
f6ac5f3d PA |
14342 | thread_info * |
14343 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
14344 | int handle_len, | |
14345 | inferior *inf) | |
f6327dcb | 14346 | { |
5b6d1e4f | 14347 | for (thread_info *tp : all_non_exited_threads (this)) |
f6327dcb | 14348 | { |
7aabaf9d | 14349 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
14350 | |
14351 | if (tp->inf == inf && priv != NULL) | |
dda83cd7 | 14352 | { |
7aabaf9d | 14353 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 14354 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
dda83cd7 | 14355 | handle_len, priv->thread_handle.size ()); |
7aabaf9d | 14356 | if (memcmp (thread_handle, priv->thread_handle.data (), |
dda83cd7 | 14357 | handle_len) == 0) |
f6327dcb KB |
14358 | return tp; |
14359 | } | |
14360 | } | |
14361 | ||
14362 | return NULL; | |
14363 | } | |
14364 | ||
3d6c6204 KB |
14365 | gdb::byte_vector |
14366 | remote_target::thread_info_to_thread_handle (struct thread_info *tp) | |
14367 | { | |
14368 | remote_thread_info *priv = get_remote_thread_info (tp); | |
14369 | return priv->thread_handle; | |
14370 | } | |
14371 | ||
57810aa7 | 14372 | bool |
f6ac5f3d | 14373 | remote_target::can_async_p () |
6426a772 | 14374 | { |
5d93a237 TT |
14375 | struct remote_state *rs = get_remote_state (); |
14376 | ||
3015c064 SM |
14377 | /* We don't go async if the user has explicitly prevented it with the |
14378 | "maint set target-async" command. */ | |
c6ebd6cf | 14379 | if (!target_async_permitted) |
57810aa7 | 14380 | return false; |
75c99385 | 14381 | |
23860348 | 14382 | /* We're async whenever the serial device is. */ |
5d93a237 | 14383 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
14384 | } |
14385 | ||
57810aa7 | 14386 | bool |
f6ac5f3d | 14387 | remote_target::is_async_p () |
6426a772 | 14388 | { |
5d93a237 TT |
14389 | struct remote_state *rs = get_remote_state (); |
14390 | ||
c6ebd6cf | 14391 | if (!target_async_permitted) |
75c99385 | 14392 | /* We only enable async when the user specifically asks for it. */ |
57810aa7 | 14393 | return false; |
75c99385 | 14394 | |
23860348 | 14395 | /* We're async whenever the serial device is. */ |
5d93a237 | 14396 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
14397 | } |
14398 | ||
2acceee2 JM |
14399 | /* Pass the SERIAL event on and up to the client. One day this code |
14400 | will be able to delay notifying the client of an event until the | |
23860348 | 14401 | point where an entire packet has been received. */ |
2acceee2 | 14402 | |
2acceee2 JM |
14403 | static serial_event_ftype remote_async_serial_handler; |
14404 | ||
6426a772 | 14405 | static void |
819cc324 | 14406 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14407 | { |
2acceee2 JM |
14408 | /* Don't propogate error information up to the client. Instead let |
14409 | the client find out about the error by querying the target. */ | |
b1a35af2 | 14410 | inferior_event_handler (INF_REG_EVENT); |
2acceee2 JM |
14411 | } |
14412 | ||
74531fed PA |
14413 | static void |
14414 | remote_async_inferior_event_handler (gdb_client_data data) | |
14415 | { | |
6b36ddeb | 14416 | inferior_event_handler (INF_REG_EVENT); |
74531fed PA |
14417 | } |
14418 | ||
5b6d1e4f PA |
14419 | int |
14420 | remote_target::async_wait_fd () | |
14421 | { | |
14422 | struct remote_state *rs = get_remote_state (); | |
14423 | return rs->remote_desc->fd; | |
14424 | } | |
14425 | ||
f6ac5f3d PA |
14426 | void |
14427 | remote_target::async (int enable) | |
2acceee2 | 14428 | { |
5d93a237 TT |
14429 | struct remote_state *rs = get_remote_state (); |
14430 | ||
6a3753b3 | 14431 | if (enable) |
2acceee2 | 14432 | { |
88b496c3 | 14433 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14434 | |
14435 | /* If there are pending events in the stop reply queue tell the | |
14436 | event loop to process them. */ | |
953edf2b | 14437 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 14438 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14439 | /* For simplicity, below we clear the pending events token |
14440 | without remembering whether it is marked, so here we always | |
14441 | mark it. If there's actually no pending notification to | |
14442 | process, this ends up being a no-op (other than a spurious | |
14443 | event-loop wakeup). */ | |
14444 | if (target_is_non_stop_p ()) | |
14445 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14446 | } |
14447 | else | |
b7d2e916 PA |
14448 | { |
14449 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14450 | /* If the core is disabling async, it doesn't want to be |
14451 | disturbed with target events. Clear all async event sources | |
14452 | too. */ | |
6b8edb51 | 14453 | clear_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14454 | if (target_is_non_stop_p ()) |
14455 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14456 | } |
6426a772 JM |
14457 | } |
14458 | ||
65706a29 PA |
14459 | /* Implementation of the to_thread_events method. */ |
14460 | ||
f6ac5f3d PA |
14461 | void |
14462 | remote_target::thread_events (int enable) | |
65706a29 PA |
14463 | { |
14464 | struct remote_state *rs = get_remote_state (); | |
14465 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
14466 | |
14467 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
14468 | return; | |
14469 | ||
8d64371b | 14470 | xsnprintf (rs->buf.data (), size, "QThreadEvents:%x", enable ? 1 : 0); |
65706a29 | 14471 | putpkt (rs->buf); |
8d64371b | 14472 | getpkt (&rs->buf, 0); |
65706a29 PA |
14473 | |
14474 | switch (packet_ok (rs->buf, | |
14475 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
14476 | { | |
14477 | case PACKET_OK: | |
8d64371b TT |
14478 | if (strcmp (rs->buf.data (), "OK") != 0) |
14479 | error (_("Remote refused setting thread events: %s"), rs->buf.data ()); | |
65706a29 PA |
14480 | break; |
14481 | case PACKET_ERROR: | |
8d64371b | 14482 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
65706a29 PA |
14483 | break; |
14484 | case PACKET_UNKNOWN: | |
14485 | break; | |
14486 | } | |
14487 | } | |
14488 | ||
d471ea57 | 14489 | static void |
981a3fb3 | 14490 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14491 | { |
37a105a1 | 14492 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14493 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14494 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14495 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14496 | |
2e783024 | 14497 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14498 | for (; list != NULL; list = list->next) |
14499 | if (strcmp (list->name, "Z-packet") == 0) | |
14500 | continue; | |
427c3a89 DJ |
14501 | else if (list->type == not_set_cmd) |
14502 | /* Alias commands are exactly like the original, except they | |
14503 | don't have the normal type. */ | |
14504 | continue; | |
14505 | else | |
37a105a1 | 14506 | { |
2e783024 | 14507 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14508 | |
112e8700 SM |
14509 | uiout->field_string ("name", list->name); |
14510 | uiout->text (": "); | |
427c3a89 | 14511 | if (list->type == show_cmd) |
f5c4fcd9 | 14512 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14513 | else |
14514 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 14515 | } |
d471ea57 | 14516 | } |
5a2468f5 | 14517 | |
0f71a2f6 | 14518 | |
23860348 | 14519 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
14520 | static void |
14521 | remote_new_objfile (struct objfile *objfile) | |
14522 | { | |
6b8edb51 | 14523 | remote_target *remote = get_current_remote_target (); |
5d93a237 | 14524 | |
122373f7 SM |
14525 | /* First, check whether the current inferior's process target is a remote |
14526 | target. */ | |
14527 | if (remote == nullptr) | |
14528 | return; | |
14529 | ||
14530 | /* When we are attaching or handling a fork child and the shared library | |
14531 | subsystem reads the list of loaded libraries, we receive new objfile | |
14532 | events in between each found library. The libraries are read in an | |
14533 | undefined order, so if we gave the remote side a chance to look up | |
14534 | symbols between each objfile, we might give it an inconsistent picture | |
14535 | of the inferior. It could appear that a library A appears loaded but | |
14536 | a library B does not, even though library A requires library B. That | |
14537 | would present a state that couldn't normally exist in the inferior. | |
14538 | ||
14539 | So, skip these events, we'll give the remote a chance to look up symbols | |
14540 | once all the loaded libraries and their symbols are known to GDB. */ | |
d424629d JB |
14541 | if (current_inferior ()->in_initial_library_scan) |
14542 | return; | |
122373f7 SM |
14543 | |
14544 | remote->remote_check_symbols (); | |
dc8acb97 MS |
14545 | } |
14546 | ||
00bf0b85 SS |
14547 | /* Pull all the tracepoints defined on the target and create local |
14548 | data structures representing them. We don't want to create real | |
14549 | tracepoints yet, we don't want to mess up the user's existing | |
14550 | collection. */ | |
14551 | ||
f6ac5f3d PA |
14552 | int |
14553 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14554 | { |
00bf0b85 SS |
14555 | struct remote_state *rs = get_remote_state (); |
14556 | char *p; | |
d5551862 | 14557 | |
00bf0b85 SS |
14558 | /* Ask for a first packet of tracepoint definition. */ |
14559 | putpkt ("qTfP"); | |
8d64371b TT |
14560 | getpkt (&rs->buf, 0); |
14561 | p = rs->buf.data (); | |
00bf0b85 | 14562 | while (*p && *p != 'l') |
d5551862 | 14563 | { |
00bf0b85 SS |
14564 | parse_tracepoint_definition (p, utpp); |
14565 | /* Ask for another packet of tracepoint definition. */ | |
14566 | putpkt ("qTsP"); | |
8d64371b TT |
14567 | getpkt (&rs->buf, 0); |
14568 | p = rs->buf.data (); | |
d5551862 | 14569 | } |
00bf0b85 | 14570 | return 0; |
d5551862 SS |
14571 | } |
14572 | ||
f6ac5f3d PA |
14573 | int |
14574 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14575 | { |
00bf0b85 | 14576 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14577 | char *p; |
d5551862 | 14578 | |
00bf0b85 SS |
14579 | /* Ask for a first packet of variable definition. */ |
14580 | putpkt ("qTfV"); | |
8d64371b TT |
14581 | getpkt (&rs->buf, 0); |
14582 | p = rs->buf.data (); | |
00bf0b85 | 14583 | while (*p && *p != 'l') |
d5551862 | 14584 | { |
00bf0b85 SS |
14585 | parse_tsv_definition (p, utsvp); |
14586 | /* Ask for another packet of variable definition. */ | |
14587 | putpkt ("qTsV"); | |
8d64371b TT |
14588 | getpkt (&rs->buf, 0); |
14589 | p = rs->buf.data (); | |
d5551862 | 14590 | } |
00bf0b85 | 14591 | return 0; |
d5551862 SS |
14592 | } |
14593 | ||
c1e36e3e PA |
14594 | /* The "set/show range-stepping" show hook. */ |
14595 | ||
14596 | static void | |
14597 | show_range_stepping (struct ui_file *file, int from_tty, | |
14598 | struct cmd_list_element *c, | |
14599 | const char *value) | |
14600 | { | |
14601 | fprintf_filtered (file, | |
14602 | _("Debugger's willingness to use range stepping " | |
14603 | "is %s.\n"), value); | |
14604 | } | |
14605 | ||
6b8edb51 PA |
14606 | /* Return true if the vCont;r action is supported by the remote |
14607 | stub. */ | |
14608 | ||
14609 | bool | |
14610 | remote_target::vcont_r_supported () | |
14611 | { | |
14612 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
14613 | remote_vcont_probe (); | |
14614 | ||
14615 | return (packet_support (PACKET_vCont) == PACKET_ENABLE | |
14616 | && get_remote_state ()->supports_vCont.r); | |
14617 | } | |
14618 | ||
c1e36e3e PA |
14619 | /* The "set/show range-stepping" set hook. */ |
14620 | ||
14621 | static void | |
eb4c3f4a | 14622 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14623 | struct cmd_list_element *c) |
14624 | { | |
6b8edb51 PA |
14625 | /* When enabling, check whether range stepping is actually supported |
14626 | by the target, and warn if not. */ | |
c1e36e3e PA |
14627 | if (use_range_stepping) |
14628 | { | |
6b8edb51 PA |
14629 | remote_target *remote = get_current_remote_target (); |
14630 | if (remote == NULL | |
14631 | || !remote->vcont_r_supported ()) | |
14632 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
14633 | } |
14634 | } | |
14635 | ||
baf2b57f SM |
14636 | static void |
14637 | show_remote_debug (struct ui_file *file, int from_tty, | |
14638 | struct cmd_list_element *c, const char *value) | |
14639 | { | |
14640 | fprintf_filtered (file, _("Debugging of remote protocol is %s.\n"), | |
14641 | value); | |
14642 | } | |
14643 | ||
14644 | static void | |
14645 | show_remote_timeout (struct ui_file *file, int from_tty, | |
14646 | struct cmd_list_element *c, const char *value) | |
14647 | { | |
14648 | fprintf_filtered (file, | |
14649 | _("Timeout limit to wait for target to respond is %s.\n"), | |
14650 | value); | |
14651 | } | |
14652 | ||
dbe692af LM |
14653 | /* Implement the "supports_memory_tagging" target_ops method. */ |
14654 | ||
14655 | bool | |
14656 | remote_target::supports_memory_tagging () | |
14657 | { | |
2c2e7f87 LM |
14658 | return remote_memory_tagging_p (); |
14659 | } | |
14660 | ||
14661 | /* Create the qMemTags packet given ADDRESS, LEN and TYPE. */ | |
14662 | ||
14663 | static void | |
14664 | create_fetch_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
14665 | size_t len, int type) | |
14666 | { | |
14667 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
14668 | ||
14669 | std::string request = string_printf ("qMemTags:%s,%s:%s", | |
14670 | phex_nz (address, addr_size), | |
14671 | phex_nz (len, sizeof (len)), | |
14672 | phex_nz (type, sizeof (type))); | |
14673 | ||
14674 | strcpy (packet.data (), request.c_str ()); | |
14675 | } | |
14676 | ||
14677 | /* Parse the qMemTags packet reply into TAGS. | |
14678 | ||
14679 | Return true if successful, false otherwise. */ | |
14680 | ||
14681 | static bool | |
14682 | parse_fetch_memtags_reply (const gdb::char_vector &reply, | |
14683 | gdb::byte_vector &tags) | |
14684 | { | |
14685 | if (reply.empty () || reply[0] == 'E' || reply[0] != 'm') | |
14686 | return false; | |
14687 | ||
14688 | /* Copy the tag data. */ | |
14689 | tags = hex2bin (reply.data () + 1); | |
14690 | ||
14691 | return true; | |
14692 | } | |
14693 | ||
14694 | /* Create the QMemTags packet given ADDRESS, LEN, TYPE and TAGS. */ | |
14695 | ||
14696 | static void | |
14697 | create_store_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
14698 | size_t len, int type, | |
14699 | const gdb::byte_vector &tags) | |
14700 | { | |
14701 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
14702 | ||
14703 | /* Put together the main packet, address and length. */ | |
14704 | std::string request = string_printf ("QMemTags:%s,%s:%s:", | |
14705 | phex_nz (address, addr_size), | |
14706 | phex_nz (len, sizeof (len)), | |
14707 | phex_nz (type, sizeof (type))); | |
14708 | request += bin2hex (tags.data (), tags.size ()); | |
14709 | ||
14710 | /* Check if we have exceeded the maximum packet size. */ | |
14711 | if (packet.size () < request.length ()) | |
14712 | error (_("Contents too big for packet QMemTags.")); | |
14713 | ||
14714 | strcpy (packet.data (), request.c_str ()); | |
dbe692af LM |
14715 | } |
14716 | ||
14717 | /* Implement the "fetch_memtags" target_ops method. */ | |
14718 | ||
14719 | bool | |
14720 | remote_target::fetch_memtags (CORE_ADDR address, size_t len, | |
14721 | gdb::byte_vector &tags, int type) | |
14722 | { | |
2c2e7f87 LM |
14723 | /* Make sure the qMemTags packet is supported. */ |
14724 | if (!remote_memory_tagging_p ()) | |
14725 | gdb_assert_not_reached ("remote fetch_memtags called with packet disabled"); | |
14726 | ||
14727 | struct remote_state *rs = get_remote_state (); | |
14728 | ||
14729 | create_fetch_memtags_request (rs->buf, address, len, type); | |
14730 | ||
14731 | putpkt (rs->buf); | |
14732 | getpkt (&rs->buf, 0); | |
14733 | ||
14734 | return parse_fetch_memtags_reply (rs->buf, tags); | |
dbe692af LM |
14735 | } |
14736 | ||
14737 | /* Implement the "store_memtags" target_ops method. */ | |
14738 | ||
14739 | bool | |
14740 | remote_target::store_memtags (CORE_ADDR address, size_t len, | |
14741 | const gdb::byte_vector &tags, int type) | |
14742 | { | |
2c2e7f87 LM |
14743 | /* Make sure the QMemTags packet is supported. */ |
14744 | if (!remote_memory_tagging_p ()) | |
14745 | gdb_assert_not_reached ("remote store_memtags called with packet disabled"); | |
14746 | ||
14747 | struct remote_state *rs = get_remote_state (); | |
14748 | ||
14749 | create_store_memtags_request (rs->buf, address, len, type, tags); | |
14750 | ||
14751 | putpkt (rs->buf); | |
14752 | getpkt (&rs->buf, 0); | |
14753 | ||
14754 | /* Verify if the request was successful. */ | |
14755 | return packet_check_result (rs->buf.data ()) == PACKET_OK; | |
dbe692af LM |
14756 | } |
14757 | ||
c39ebbf4 TV |
14758 | /* Return true if remote target T is non-stop. */ |
14759 | ||
14760 | bool | |
14761 | remote_target_is_non_stop_p (remote_target *t) | |
14762 | { | |
14763 | scoped_restore_current_thread restore_thread; | |
14764 | switch_to_target_no_thread (t); | |
14765 | ||
14766 | return target_is_non_stop_p (); | |
14767 | } | |
14768 | ||
754487e2 LM |
14769 | #if GDB_SELF_TEST |
14770 | ||
14771 | namespace selftests { | |
14772 | ||
14773 | static void | |
14774 | test_memory_tagging_functions () | |
14775 | { | |
14776 | remote_target remote; | |
14777 | ||
14778 | struct packet_config *config | |
14779 | = &remote_protocol_packets[PACKET_memory_tagging_feature]; | |
14780 | ||
14781 | scoped_restore restore_memtag_support_ | |
14782 | = make_scoped_restore (&config->support); | |
14783 | ||
14784 | /* Test memory tagging packet support. */ | |
14785 | config->support = PACKET_SUPPORT_UNKNOWN; | |
14786 | SELF_CHECK (remote.supports_memory_tagging () == false); | |
14787 | config->support = PACKET_DISABLE; | |
14788 | SELF_CHECK (remote.supports_memory_tagging () == false); | |
14789 | config->support = PACKET_ENABLE; | |
14790 | SELF_CHECK (remote.supports_memory_tagging () == true); | |
14791 | ||
14792 | /* Setup testing. */ | |
14793 | gdb::char_vector packet; | |
14794 | gdb::byte_vector tags, bv; | |
14795 | std::string expected, reply; | |
14796 | packet.resize (32000); | |
14797 | ||
14798 | /* Test creating a qMemTags request. */ | |
14799 | ||
14800 | expected = "qMemTags:0,0:0"; | |
14801 | create_fetch_memtags_request (packet, 0x0, 0x0, 0); | |
14802 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
14803 | ||
14804 | expected = "qMemTags:deadbeef,10:1"; | |
14805 | create_fetch_memtags_request (packet, 0xdeadbeef, 16, 1); | |
14806 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
14807 | ||
14808 | /* Test parsing a qMemTags reply. */ | |
14809 | ||
14810 | /* Error reply, tags vector unmodified. */ | |
14811 | reply = "E00"; | |
14812 | strcpy (packet.data (), reply.c_str ()); | |
14813 | tags.resize (0); | |
14814 | SELF_CHECK (parse_fetch_memtags_reply (packet, tags) == false); | |
14815 | SELF_CHECK (tags.size () == 0); | |
14816 | ||
14817 | /* Valid reply, tags vector updated. */ | |
14818 | tags.resize (0); | |
14819 | bv.resize (0); | |
14820 | ||
14821 | for (int i = 0; i < 5; i++) | |
14822 | bv.push_back (i); | |
14823 | ||
14824 | reply = "m" + bin2hex (bv.data (), bv.size ()); | |
14825 | strcpy (packet.data (), reply.c_str ()); | |
14826 | ||
14827 | SELF_CHECK (parse_fetch_memtags_reply (packet, tags) == true); | |
14828 | SELF_CHECK (tags.size () == 5); | |
14829 | ||
14830 | for (int i = 0; i < 5; i++) | |
14831 | SELF_CHECK (tags[i] == i); | |
14832 | ||
14833 | /* Test creating a QMemTags request. */ | |
14834 | ||
14835 | /* Empty tag data. */ | |
14836 | tags.resize (0); | |
14837 | expected = "QMemTags:0,0:0:"; | |
14838 | create_store_memtags_request (packet, 0x0, 0x0, 0, tags); | |
14839 | SELF_CHECK (memcmp (packet.data (), expected.c_str (), | |
14840 | expected.length ()) == 0); | |
14841 | ||
14842 | /* Non-empty tag data. */ | |
14843 | tags.resize (0); | |
14844 | for (int i = 0; i < 5; i++) | |
14845 | tags.push_back (i); | |
14846 | expected = "QMemTags:deadbeef,ff:1:0001020304"; | |
14847 | create_store_memtags_request (packet, 0xdeadbeef, 255, 1, tags); | |
14848 | SELF_CHECK (memcmp (packet.data (), expected.c_str (), | |
14849 | expected.length ()) == 0); | |
14850 | } | |
14851 | ||
14852 | } // namespace selftests | |
14853 | #endif /* GDB_SELF_TEST */ | |
14854 | ||
6c265988 | 14855 | void _initialize_remote (); |
c906108c | 14856 | void |
6c265988 | 14857 | _initialize_remote () |
c906108c | 14858 | { |
0f71a2f6 | 14859 | /* architecture specific data */ |
29709017 DJ |
14860 | remote_g_packet_data_handle = |
14861 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14862 | |
d9f719f1 PA |
14863 | add_target (remote_target_info, remote_target::open); |
14864 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 14865 | |
dc8acb97 | 14866 | /* Hook into new objfile notification. */ |
c90e7d63 | 14867 | gdb::observers::new_objfile.attach (remote_new_objfile, "remote"); |
dc8acb97 | 14868 | |
c906108c SS |
14869 | #if 0 |
14870 | init_remote_threadtests (); | |
14871 | #endif | |
14872 | ||
23860348 | 14873 | /* set/show remote ... */ |
d471ea57 | 14874 | |
0743fc83 | 14875 | add_basic_prefix_cmd ("remote", class_maintenance, _("\ |
590042fc | 14876 | Remote protocol specific variables.\n\ |
5a2468f5 | 14877 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14878 | the packets being used."), |
2f822da5 | 14879 | &remote_set_cmdlist, |
0743fc83 | 14880 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 14881 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
590042fc | 14882 | Remote protocol specific variables.\n\ |
5a2468f5 | 14883 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14884 | the packets being used."), |
2f822da5 | 14885 | &remote_show_cmdlist, |
23860348 | 14886 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14887 | |
1a966eab AC |
14888 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14889 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14890 | Argument is a single section name (default: all loaded sections).\n\ |
14891 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14892 | &cmdlist); |
14893 | ||
1a966eab AC |
14894 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14895 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14896 | maintenance packet TEXT\n\ |
14897 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14898 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14899 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14900 | terminating `#' character and checksum."), |
c906108c SS |
14901 | &maintenancelist); |
14902 | ||
9f260536 SM |
14903 | set_show_commands remotebreak_cmds |
14904 | = add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ | |
7915a72c AC |
14905 | Set whether to send break if interrupted."), _("\ |
14906 | Show whether to send break if interrupted."), _("\ | |
14907 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9f260536 SM |
14908 | set_remotebreak, show_remotebreak, |
14909 | &setlist, &showlist); | |
14910 | deprecate_cmd (remotebreak_cmds.set, "set remote interrupt-sequence"); | |
14911 | deprecate_cmd (remotebreak_cmds.show, "show remote interrupt-sequence"); | |
9a7071a8 JB |
14912 | |
14913 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14914 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14915 | _("\ | |
9a7071a8 JB |
14916 | Set interrupt sequence to remote target."), _("\ |
14917 | Show interrupt sequence to remote target."), _("\ | |
14918 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14919 | NULL, show_interrupt_sequence, | |
14920 | &remote_set_cmdlist, | |
14921 | &remote_show_cmdlist); | |
14922 | ||
14923 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14924 | &interrupt_on_connect, _("\ | |
590042fc PW |
14925 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ |
14926 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ | |
9a7071a8 JB |
14927 | If set, interrupt sequence is sent to remote target."), |
14928 | NULL, NULL, | |
14929 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14930 | |
23860348 | 14931 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14932 | |
1a966eab AC |
14933 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14934 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14935 | &setlist); |
1a966eab AC |
14936 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14937 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14938 | &showlist); |
14939 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14940 | set_memory_write_packet_size, _("\ |
14941 | Set the maximum number of bytes per memory-write packet.\n\ | |
14942 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14943 | default packet size. The actual limit is further reduced\n\ | |
14944 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14945 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14946 | &remote_set_cmdlist); |
14947 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14948 | set_memory_read_packet_size, _("\ |
14949 | Set the maximum number of bytes per memory-read packet.\n\ | |
14950 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14951 | default packet size. The actual limit is further reduced\n\ | |
14952 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14953 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14954 | &remote_set_cmdlist); |
14955 | add_cmd ("memory-write-packet-size", no_class, | |
14956 | show_memory_write_packet_size, | |
1a966eab | 14957 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14958 | &remote_show_cmdlist); |
14959 | add_cmd ("memory-read-packet-size", no_class, | |
14960 | show_memory_read_packet_size, | |
1a966eab | 14961 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14962 | &remote_show_cmdlist); |
c906108c | 14963 | |
055303e2 | 14964 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14965 | &remote_hw_watchpoint_limit, _("\ |
14966 | Set the maximum number of target hardware watchpoints."), _("\ | |
14967 | Show the maximum number of target hardware watchpoints."), _("\ | |
055303e2 AB |
14968 | Specify \"unlimited\" for unlimited hardware watchpoints."), |
14969 | NULL, show_hardware_watchpoint_limit, | |
14970 | &remote_set_cmdlist, | |
14971 | &remote_show_cmdlist); | |
14972 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-length-limit", | |
14973 | no_class, | |
480a3f21 PW |
14974 | &remote_hw_watchpoint_length_limit, _("\ |
14975 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14976 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
055303e2 AB |
14977 | Specify \"unlimited\" to allow watchpoints of unlimited size."), |
14978 | NULL, show_hardware_watchpoint_length_limit, | |
480a3f21 | 14979 | &remote_set_cmdlist, &remote_show_cmdlist); |
055303e2 | 14980 | add_setshow_zuinteger_unlimited_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14981 | &remote_hw_breakpoint_limit, _("\ |
14982 | Set the maximum number of target hardware breakpoints."), _("\ | |
14983 | Show the maximum number of target hardware breakpoints."), _("\ | |
055303e2 AB |
14984 | Specify \"unlimited\" for unlimited hardware breakpoints."), |
14985 | NULL, show_hardware_breakpoint_limit, | |
b3f42336 | 14986 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14987 | |
1b493192 PA |
14988 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14989 | &remote_address_size, _("\ | |
4d28ad1e AC |
14990 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14991 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14992 | NULL, |
14993 | NULL, /* FIXME: i18n: */ | |
14994 | &setlist, &showlist); | |
c906108c | 14995 | |
ca4f7f8b PA |
14996 | init_all_packet_configs (); |
14997 | ||
444abaca | 14998 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14999 | "X", "binary-download", 1); |
0f71a2f6 | 15000 | |
444abaca | 15001 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 15002 | "vCont", "verbose-resume", 0); |
506fb367 | 15003 | |
89be2091 DJ |
15004 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
15005 | "QPassSignals", "pass-signals", 0); | |
15006 | ||
82075af2 JS |
15007 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
15008 | "QCatchSyscalls", "catch-syscalls", 0); | |
15009 | ||
9b224c5e PA |
15010 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
15011 | "QProgramSignals", "program-signals", 0); | |
15012 | ||
bc3b087d SDJ |
15013 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
15014 | "QSetWorkingDir", "set-working-dir", 0); | |
15015 | ||
aefd8b33 SDJ |
15016 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
15017 | "QStartupWithShell", "startup-with-shell", 0); | |
15018 | ||
0a2dde4a SDJ |
15019 | add_packet_config_cmd (&remote_protocol_packets |
15020 | [PACKET_QEnvironmentHexEncoded], | |
15021 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
15022 | 0); | |
15023 | ||
15024 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
15025 | "QEnvironmentReset", "environment-reset", | |
15026 | 0); | |
15027 | ||
15028 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
15029 | "QEnvironmentUnset", "environment-unset", | |
15030 | 0); | |
15031 | ||
444abaca | 15032 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 15033 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 15034 | |
444abaca | 15035 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 15036 | "P", "set-register", 1); |
d471ea57 | 15037 | |
444abaca | 15038 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 15039 | "p", "fetch-register", 1); |
b96ec7ac | 15040 | |
444abaca | 15041 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 15042 | "Z0", "software-breakpoint", 0); |
d471ea57 | 15043 | |
444abaca | 15044 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 15045 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 15046 | |
444abaca | 15047 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 15048 | "Z2", "write-watchpoint", 0); |
d471ea57 | 15049 | |
444abaca | 15050 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 15051 | "Z3", "read-watchpoint", 0); |
d471ea57 | 15052 | |
444abaca | 15053 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 15054 | "Z4", "access-watchpoint", 0); |
d471ea57 | 15055 | |
0876f84a DJ |
15056 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
15057 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 15058 | |
c78fa86a GB |
15059 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
15060 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
15061 | ||
23181151 DJ |
15062 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
15063 | "qXfer:features:read", "target-features", 0); | |
15064 | ||
cfa9d6d9 DJ |
15065 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
15066 | "qXfer:libraries:read", "library-info", 0); | |
15067 | ||
2268b414 JK |
15068 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
15069 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
15070 | ||
fd79ecee DJ |
15071 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
15072 | "qXfer:memory-map:read", "memory-map", 0); | |
15073 | ||
07e059b5 | 15074 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
dda83cd7 | 15075 | "qXfer:osdata:read", "osdata", 0); |
07e059b5 | 15076 | |
dc146f7c VP |
15077 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
15078 | "qXfer:threads:read", "threads", 0); | |
15079 | ||
4aa995e1 | 15080 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
dda83cd7 | 15081 | "qXfer:siginfo:read", "read-siginfo-object", 0); |
4aa995e1 PA |
15082 | |
15083 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
dda83cd7 | 15084 | "qXfer:siginfo:write", "write-siginfo-object", 0); |
4aa995e1 | 15085 | |
b3b9301e PA |
15086 | add_packet_config_cmd |
15087 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 15088 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 15089 | |
169081d0 TG |
15090 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
15091 | "qXfer:uib:read", "unwind-info-block", 0); | |
15092 | ||
444abaca | 15093 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 15094 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
15095 | 0); |
15096 | ||
711e434b PM |
15097 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
15098 | "qGetTIBAddr", "get-thread-information-block-address", | |
15099 | 0); | |
15100 | ||
40ab02ce MS |
15101 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
15102 | "bc", "reverse-continue", 0); | |
15103 | ||
15104 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
15105 | "bs", "reverse-step", 0); | |
15106 | ||
be2a5f71 DJ |
15107 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
15108 | "qSupported", "supported-packets", 0); | |
15109 | ||
08388c79 DE |
15110 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
15111 | "qSearch:memory", "search-memory", 0); | |
15112 | ||
bd3eecc3 PA |
15113 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
15114 | "qTStatus", "trace-status", 0); | |
15115 | ||
15a201c8 GB |
15116 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
15117 | "vFile:setfs", "hostio-setfs", 0); | |
15118 | ||
a6b151f1 DJ |
15119 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
15120 | "vFile:open", "hostio-open", 0); | |
15121 | ||
15122 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
15123 | "vFile:pread", "hostio-pread", 0); | |
15124 | ||
15125 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
15126 | "vFile:pwrite", "hostio-pwrite", 0); | |
15127 | ||
15128 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
15129 | "vFile:close", "hostio-close", 0); | |
15130 | ||
15131 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
15132 | "vFile:unlink", "hostio-unlink", 0); | |
15133 | ||
b9e7b9c3 UW |
15134 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
15135 | "vFile:readlink", "hostio-readlink", 0); | |
15136 | ||
0a93529c GB |
15137 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
15138 | "vFile:fstat", "hostio-fstat", 0); | |
15139 | ||
2d717e4f DJ |
15140 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
15141 | "vAttach", "attach", 0); | |
15142 | ||
15143 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
15144 | "vRun", "run", 0); | |
15145 | ||
a6f3e723 SL |
15146 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
15147 | "QStartNoAckMode", "noack", 0); | |
15148 | ||
82f73884 PA |
15149 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
15150 | "vKill", "kill", 0); | |
15151 | ||
0b16c5cf PA |
15152 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
15153 | "qAttached", "query-attached", 0); | |
15154 | ||
782b2b07 | 15155 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
15156 | "ConditionalTracepoints", |
15157 | "conditional-tracepoints", 0); | |
3788aec7 LM |
15158 | |
15159 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
15160 | "ConditionalBreakpoints", | |
15161 | "conditional-breakpoints", 0); | |
15162 | ||
d3ce09f5 SS |
15163 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
15164 | "BreakpointCommands", | |
15165 | "breakpoint-commands", 0); | |
15166 | ||
7a697b8d SS |
15167 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
15168 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 15169 | |
409873ef SS |
15170 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
15171 | "TracepointSource", "TracepointSource", 0); | |
15172 | ||
d914c394 SS |
15173 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
15174 | "QAllow", "allow", 0); | |
15175 | ||
0fb4aa4b PA |
15176 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
15177 | "StaticTracepoints", "static-tracepoints", 0); | |
15178 | ||
1e4d1764 YQ |
15179 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
15180 | "InstallInTrace", "install-in-trace", 0); | |
15181 | ||
0fb4aa4b | 15182 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
dda83cd7 | 15183 | "qXfer:statictrace:read", "read-sdata-object", 0); |
0fb4aa4b | 15184 | |
78d85199 YQ |
15185 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
15186 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
15187 | ||
03583c20 UW |
15188 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
15189 | "QDisableRandomization", "disable-randomization", 0); | |
15190 | ||
d1feda86 YQ |
15191 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
15192 | "QAgent", "agent", 0); | |
15193 | ||
f6f899bf HAQ |
15194 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
15195 | "QTBuffer:size", "trace-buffer-size", 0); | |
15196 | ||
9accd112 MM |
15197 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
15198 | "Qbtrace:off", "disable-btrace", 0); | |
15199 | ||
15200 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
15201 | "Qbtrace:bts", "enable-btrace-bts", 0); |
15202 | ||
15203 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
15204 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
15205 | |
15206 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
15207 | "qXfer:btrace", "read-btrace", 0); | |
15208 | ||
f4abbc16 MM |
15209 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
15210 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
15211 | ||
d33501a5 MM |
15212 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
15213 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
15214 | ||
73b8c1fd PA |
15215 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
15216 | "multiprocess-feature", "multiprocess-feature", 0); | |
15217 | ||
f7e6eed5 | 15218 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
dda83cd7 | 15219 | "swbreak-feature", "swbreak-feature", 0); |
f7e6eed5 PA |
15220 | |
15221 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
dda83cd7 | 15222 | "hwbreak-feature", "hwbreak-feature", 0); |
f7e6eed5 | 15223 | |
89245bc0 DB |
15224 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
15225 | "fork-event-feature", "fork-event-feature", 0); | |
15226 | ||
15227 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
15228 | "vfork-event-feature", "vfork-event-feature", 0); | |
15229 | ||
b20a6524 MM |
15230 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
15231 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
15232 | ||
750ce8d1 YQ |
15233 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
15234 | "vContSupported", "verbose-resume-supported", 0); | |
15235 | ||
94585166 DB |
15236 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
15237 | "exec-event-feature", "exec-event-feature", 0); | |
15238 | ||
de979965 PA |
15239 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
15240 | "vCtrlC", "ctrl-c", 0); | |
15241 | ||
65706a29 PA |
15242 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
15243 | "QThreadEvents", "thread-events", 0); | |
15244 | ||
f2faf941 PA |
15245 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
15246 | "N stop reply", "no-resumed-stop-reply", 0); | |
15247 | ||
2c2e7f87 LM |
15248 | add_packet_config_cmd (&remote_protocol_packets[PACKET_memory_tagging_feature], |
15249 | "memory-tagging-feature", "memory-tagging-feature", 0); | |
15250 | ||
0b736949 DB |
15251 | /* Assert that we've registered "set remote foo-packet" commands |
15252 | for all packet configs. */ | |
ca4f7f8b PA |
15253 | { |
15254 | int i; | |
15255 | ||
15256 | for (i = 0; i < PACKET_MAX; i++) | |
15257 | { | |
15258 | /* Ideally all configs would have a command associated. Some | |
15259 | still don't though. */ | |
15260 | int excepted; | |
15261 | ||
15262 | switch (i) | |
15263 | { | |
15264 | case PACKET_QNonStop: | |
ca4f7f8b PA |
15265 | case PACKET_EnableDisableTracepoints_feature: |
15266 | case PACKET_tracenz_feature: | |
15267 | case PACKET_DisconnectedTracing_feature: | |
15268 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
15269 | case PACKET_qCRC: |
15270 | /* Additions to this list need to be well justified: | |
15271 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
15272 | excepted = 1; |
15273 | break; | |
15274 | default: | |
15275 | excepted = 0; | |
15276 | break; | |
15277 | } | |
15278 | ||
15279 | /* This catches both forgetting to add a config command, and | |
15280 | forgetting to remove a packet from the exception list. */ | |
15281 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
15282 | } | |
15283 | } | |
15284 | ||
37a105a1 DJ |
15285 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
15286 | Z sub-packet has its own set and show commands, but users may | |
15287 | have sets to this variable in their .gdbinit files (or in their | |
15288 | documentation). */ | |
e9e68a56 | 15289 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c | 15290 | &remote_Z_packet_detect, _("\ |
590042fc PW |
15291 | Set use of remote protocol `Z' packets."), _("\ |
15292 | Show use of remote protocol `Z' packets."), _("\ | |
3b64bf98 | 15293 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 15294 | packets."), |
e9e68a56 | 15295 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
15296 | show_remote_protocol_Z_packet_cmd, |
15297 | /* FIXME: i18n: Use of remote protocol | |
15298 | `Z' packets is %s. */ | |
e9e68a56 | 15299 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 15300 | |
0743fc83 | 15301 | add_basic_prefix_cmd ("remote", class_files, _("\ |
590042fc | 15302 | Manipulate files on the remote system.\n\ |
a6b151f1 | 15303 | Transfer files to and from the remote target system."), |
2f822da5 | 15304 | &remote_cmdlist, |
0743fc83 | 15305 | 0 /* allow-unknown */, &cmdlist); |
a6b151f1 DJ |
15306 | |
15307 | add_cmd ("put", class_files, remote_put_command, | |
15308 | _("Copy a local file to the remote system."), | |
15309 | &remote_cmdlist); | |
15310 | ||
15311 | add_cmd ("get", class_files, remote_get_command, | |
15312 | _("Copy a remote file to the local system."), | |
15313 | &remote_cmdlist); | |
15314 | ||
15315 | add_cmd ("delete", class_files, remote_delete_command, | |
15316 | _("Delete a remote file."), | |
15317 | &remote_cmdlist); | |
15318 | ||
2d717e4f | 15319 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 15320 | &remote_exec_file_var, _("\ |
590042fc PW |
15321 | Set the remote pathname for \"run\"."), _("\ |
15322 | Show the remote pathname for \"run\"."), NULL, | |
94585166 DB |
15323 | set_remote_exec_file, |
15324 | show_remote_exec_file, | |
15325 | &remote_set_cmdlist, | |
15326 | &remote_show_cmdlist); | |
2d717e4f | 15327 | |
c1e36e3e PA |
15328 | add_setshow_boolean_cmd ("range-stepping", class_run, |
15329 | &use_range_stepping, _("\ | |
15330 | Enable or disable range stepping."), _("\ | |
15331 | Show whether target-assisted range stepping is enabled."), _("\ | |
15332 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
15333 | tells the target to step the corresponding range of addresses itself instead\n\ | |
15334 | of issuing multiple single-steps. This speeds up source level\n\ | |
15335 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
15336 | stepping is supported by the target. The default is on."), | |
15337 | set_range_stepping, | |
15338 | show_range_stepping, | |
15339 | &setlist, | |
15340 | &showlist); | |
15341 | ||
ed2b7c17 TT |
15342 | add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\ |
15343 | Set watchdog timer."), _("\ | |
15344 | Show watchdog timer."), _("\ | |
15345 | When non-zero, this timeout is used instead of waiting forever for a target\n\ | |
15346 | to finish a low-level step or continue operation. If the specified amount\n\ | |
15347 | of time passes without a response from the target, an error occurs."), | |
15348 | NULL, | |
15349 | show_watchdog, | |
15350 | &setlist, &showlist); | |
15351 | ||
6cc8564b LM |
15352 | add_setshow_zuinteger_unlimited_cmd ("remote-packet-max-chars", no_class, |
15353 | &remote_packet_max_chars, _("\ | |
15354 | Set the maximum number of characters to display for each remote packet."), _("\ | |
15355 | Show the maximum number of characters to display for each remote packet."), _("\ | |
15356 | Specify \"unlimited\" to display all the characters."), | |
15357 | NULL, show_remote_packet_max_chars, | |
15358 | &setdebuglist, &showdebuglist); | |
15359 | ||
02349803 SM |
15360 | add_setshow_boolean_cmd ("remote", no_class, &remote_debug, |
15361 | _("Set debugging of remote protocol."), | |
15362 | _("Show debugging of remote protocol."), | |
15363 | _("\ | |
baf2b57f SM |
15364 | When enabled, each packet sent or received with the remote target\n\ |
15365 | is displayed."), | |
02349803 SM |
15366 | NULL, |
15367 | show_remote_debug, | |
15368 | &setdebuglist, &showdebuglist); | |
baf2b57f SM |
15369 | |
15370 | add_setshow_zuinteger_unlimited_cmd ("remotetimeout", no_class, | |
15371 | &remote_timeout, _("\ | |
15372 | Set timeout limit to wait for target to respond."), _("\ | |
15373 | Show timeout limit to wait for target to respond."), _("\ | |
15374 | This value is used to set the time limit for gdb to wait for a response\n\ | |
15375 | from the target."), | |
15376 | NULL, | |
15377 | show_remote_timeout, | |
15378 | &setlist, &showlist); | |
15379 | ||
449092f6 | 15380 | /* Eventually initialize fileio. See fileio.c */ |
3f4d92eb | 15381 | initialize_remote_fileio (&remote_set_cmdlist, &remote_show_cmdlist); |
754487e2 LM |
15382 | |
15383 | #if GDB_SELF_TEST | |
15384 | selftests::register_test ("remote_memory_tagging", | |
15385 | selftests::test_memory_tagging_functions); | |
15386 | #endif | |
c906108c | 15387 | } |