Commit | Line | Data |
---|---|---|
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" |
35b1e5cc | 82 | |
f6ac5f3d PA |
83 | /* The remote target. */ |
84 | ||
d9f719f1 PA |
85 | static const char remote_doc[] = N_("\ |
86 | Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
87 | Specify the serial device it is connected to\n\ | |
88 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
89 | ||
cda09ec9 SM |
90 | /* See remote.h */ |
91 | ||
02349803 | 92 | bool remote_debug = false; |
cda09ec9 | 93 | |
6b8edb51 PA |
94 | #define OPAQUETHREADBYTES 8 |
95 | ||
96 | /* a 64 bit opaque identifier */ | |
97 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
98 | ||
99 | struct gdb_ext_thread_info; | |
100 | struct threads_listing_context; | |
101 | typedef int (*rmt_thread_action) (threadref *ref, void *context); | |
102 | struct protocol_feature; | |
103 | struct packet_reg; | |
104 | ||
105 | struct stop_reply; | |
32603266 | 106 | typedef std::unique_ptr<stop_reply> stop_reply_up; |
6b8edb51 PA |
107 | |
108 | /* Generic configuration support for packets the stub optionally | |
109 | supports. Allows the user to specify the use of the packet as well | |
110 | as allowing GDB to auto-detect support in the remote stub. */ | |
111 | ||
112 | enum packet_support | |
113 | { | |
114 | PACKET_SUPPORT_UNKNOWN = 0, | |
115 | PACKET_ENABLE, | |
116 | PACKET_DISABLE | |
117 | }; | |
118 | ||
119 | /* Analyze a packet's return value and update the packet config | |
120 | accordingly. */ | |
121 | ||
122 | enum packet_result | |
123 | { | |
124 | PACKET_ERROR, | |
125 | PACKET_OK, | |
126 | PACKET_UNKNOWN | |
127 | }; | |
128 | ||
129 | struct threads_listing_context; | |
3c69da40 PA |
130 | |
131 | /* Stub vCont actions support. | |
132 | ||
133 | Each field is a boolean flag indicating whether the stub reports | |
134 | support for the corresponding action. */ | |
135 | ||
136 | struct vCont_action_support | |
137 | { | |
138 | /* vCont;t */ | |
139 | bool t = false; | |
140 | ||
141 | /* vCont;r */ | |
142 | bool r = false; | |
143 | ||
144 | /* vCont;s */ | |
145 | bool s = false; | |
146 | ||
147 | /* vCont;S */ | |
148 | bool S = false; | |
149 | }; | |
150 | ||
405feb71 | 151 | /* About this many threadids fit in a packet. */ |
3c69da40 PA |
152 | |
153 | #define MAXTHREADLISTRESULTS 32 | |
154 | ||
155 | /* Data for the vFile:pread readahead cache. */ | |
156 | ||
157 | struct readahead_cache | |
158 | { | |
159 | /* Invalidate the readahead cache. */ | |
160 | void invalidate (); | |
161 | ||
162 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
163 | void invalidate_fd (int fd); | |
164 | ||
165 | /* Serve pread from the readahead cache. Returns number of bytes | |
166 | read, or 0 if the request can't be served from the cache. */ | |
167 | int pread (int fd, gdb_byte *read_buf, size_t len, ULONGEST offset); | |
168 | ||
169 | /* The file descriptor for the file that is being cached. -1 if the | |
170 | cache is invalid. */ | |
171 | int fd = -1; | |
172 | ||
173 | /* The offset into the file that the cache buffer corresponds | |
174 | to. */ | |
175 | ULONGEST offset = 0; | |
176 | ||
177 | /* The buffer holding the cache contents. */ | |
178 | gdb_byte *buf = nullptr; | |
179 | /* The buffer's size. We try to read as much as fits into a packet | |
180 | at a time. */ | |
181 | size_t bufsize = 0; | |
182 | ||
183 | /* Cache hit and miss counters. */ | |
184 | ULONGEST hit_count = 0; | |
185 | ULONGEST miss_count = 0; | |
186 | }; | |
187 | ||
188 | /* Description of the remote protocol for a given architecture. */ | |
189 | ||
190 | struct packet_reg | |
191 | { | |
192 | long offset; /* Offset into G packet. */ | |
193 | long regnum; /* GDB's internal register number. */ | |
194 | LONGEST pnum; /* Remote protocol register number. */ | |
195 | int in_g_packet; /* Always part of G packet. */ | |
196 | /* long size in bytes; == register_size (target_gdbarch (), regnum); | |
197 | at present. */ | |
198 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); | |
199 | at present. */ | |
200 | }; | |
201 | ||
202 | struct remote_arch_state | |
203 | { | |
204 | explicit remote_arch_state (struct gdbarch *gdbarch); | |
205 | ||
206 | /* Description of the remote protocol registers. */ | |
207 | long sizeof_g_packet; | |
208 | ||
209 | /* Description of the remote protocol registers indexed by REGNUM | |
210 | (making an array gdbarch_num_regs in size). */ | |
211 | std::unique_ptr<packet_reg[]> regs; | |
212 | ||
213 | /* This is the size (in chars) of the first response to the ``g'' | |
214 | packet. It is used as a heuristic when determining the maximum | |
215 | size of memory-read and memory-write packets. A target will | |
216 | typically only reserve a buffer large enough to hold the ``g'' | |
217 | packet. The size does not include packet overhead (headers and | |
218 | trailers). */ | |
219 | long actual_register_packet_size; | |
220 | ||
221 | /* This is the maximum size (in chars) of a non read/write packet. | |
222 | It is also used as a cap on the size of read/write packets. */ | |
223 | long remote_packet_size; | |
224 | }; | |
225 | ||
226 | /* Description of the remote protocol state for the currently | |
227 | connected target. This is per-target state, and independent of the | |
228 | selected architecture. */ | |
229 | ||
230 | class remote_state | |
231 | { | |
232 | public: | |
233 | ||
234 | remote_state (); | |
235 | ~remote_state (); | |
236 | ||
237 | /* Get the remote arch state for GDBARCH. */ | |
238 | struct remote_arch_state *get_remote_arch_state (struct gdbarch *gdbarch); | |
239 | ||
240 | public: /* data */ | |
241 | ||
242 | /* A buffer to use for incoming packets, and its current size. The | |
243 | buffer is grown dynamically for larger incoming packets. | |
244 | Outgoing packets may also be constructed in this buffer. | |
8d64371b | 245 | The size of the buffer is always at least REMOTE_PACKET_SIZE; |
3c69da40 PA |
246 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing |
247 | packets. */ | |
8d64371b | 248 | gdb::char_vector buf; |
3c69da40 PA |
249 | |
250 | /* True if we're going through initial connection setup (finding out | |
251 | about the remote side's threads, relocating symbols, etc.). */ | |
252 | bool starting_up = false; | |
253 | ||
254 | /* If we negotiated packet size explicitly (and thus can bypass | |
255 | heuristics for the largest packet size that will not overflow | |
256 | a buffer in the stub), this will be set to that packet size. | |
257 | Otherwise zero, meaning to use the guessed size. */ | |
258 | long explicit_packet_size = 0; | |
259 | ||
260 | /* remote_wait is normally called when the target is running and | |
261 | waits for a stop reply packet. But sometimes we need to call it | |
262 | when the target is already stopped. We can send a "?" packet | |
263 | and have remote_wait read the response. Or, if we already have | |
264 | the response, we can stash it in BUF and tell remote_wait to | |
265 | skip calling getpkt. This flag is set when BUF contains a | |
266 | stop reply packet and the target is not waiting. */ | |
267 | int cached_wait_status = 0; | |
268 | ||
269 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
270 | expect acks from each other. The connection is assumed to be | |
271 | reliable. */ | |
272 | bool noack_mode = false; | |
273 | ||
274 | /* True if we're connected in extended remote mode. */ | |
275 | bool extended = false; | |
276 | ||
277 | /* True if we resumed the target and we're waiting for the target to | |
278 | stop. In the mean time, we can't start another command/query. | |
279 | The remote server wouldn't be ready to process it, so we'd | |
280 | timeout waiting for a reply that would never come and eventually | |
281 | we'd close the connection. This can happen in asynchronous mode | |
282 | because we allow GDB commands while the target is running. */ | |
283 | bool waiting_for_stop_reply = false; | |
284 | ||
285 | /* The status of the stub support for the various vCont actions. */ | |
286 | vCont_action_support supports_vCont; | |
5b6d1e4f PA |
287 | /* Whether vCont support was probed already. This is a workaround |
288 | until packet_support is per-connection. */ | |
289 | bool supports_vCont_probed; | |
3c69da40 PA |
290 | |
291 | /* True if the user has pressed Ctrl-C, but the target hasn't | |
292 | responded to that. */ | |
293 | bool ctrlc_pending_p = false; | |
294 | ||
295 | /* True if we saw a Ctrl-C while reading or writing from/to the | |
296 | remote descriptor. At that point it is not safe to send a remote | |
297 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
298 | process it once we're done with sending/receiving the current | |
299 | packet, which should be shortly. If however that takes too long, | |
300 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
301 | bool got_ctrlc_during_io = false; | |
302 | ||
303 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
304 | remote_open knows that we don't have a file open when the program | |
305 | starts. */ | |
306 | struct serial *remote_desc = nullptr; | |
307 | ||
308 | /* These are the threads which we last sent to the remote system. The | |
309 | TID member will be -1 for all or -2 for not sent yet. */ | |
310 | ptid_t general_thread = null_ptid; | |
311 | ptid_t continue_thread = null_ptid; | |
312 | ||
313 | /* This is the traceframe which we last selected on the remote system. | |
314 | It will be -1 if no traceframe is selected. */ | |
315 | int remote_traceframe_number = -1; | |
316 | ||
317 | char *last_pass_packet = nullptr; | |
318 | ||
319 | /* The last QProgramSignals packet sent to the target. We bypass | |
320 | sending a new program signals list down to the target if the new | |
321 | packet is exactly the same as the last we sent. IOW, we only let | |
322 | the target know about program signals list changes. */ | |
323 | char *last_program_signals_packet = nullptr; | |
324 | ||
325 | gdb_signal last_sent_signal = GDB_SIGNAL_0; | |
326 | ||
327 | bool last_sent_step = false; | |
328 | ||
329 | /* The execution direction of the last resume we got. */ | |
330 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; | |
331 | ||
332 | char *finished_object = nullptr; | |
333 | char *finished_annex = nullptr; | |
334 | ULONGEST finished_offset = 0; | |
335 | ||
336 | /* Should we try the 'ThreadInfo' query packet? | |
337 | ||
338 | This variable (NOT available to the user: auto-detect only!) | |
339 | determines whether GDB will use the new, simpler "ThreadInfo" | |
340 | query or the older, more complex syntax for thread queries. | |
341 | This is an auto-detect variable (set to true at each connect, | |
342 | and set to false when the target fails to recognize it). */ | |
343 | bool use_threadinfo_query = false; | |
344 | bool use_threadextra_query = false; | |
345 | ||
346 | threadref echo_nextthread {}; | |
347 | threadref nextthread {}; | |
348 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
349 | ||
350 | /* The state of remote notification. */ | |
351 | struct remote_notif_state *notif_state = nullptr; | |
352 | ||
353 | /* The branch trace configuration. */ | |
354 | struct btrace_config btrace_config {}; | |
355 | ||
356 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
357 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
358 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
359 | has yet been sent. */ | |
360 | int fs_pid = -1; | |
361 | ||
362 | /* A readahead cache for vFile:pread. Often, reading a binary | |
363 | involves a sequence of small reads. E.g., when parsing an ELF | |
364 | file. A readahead cache helps mostly the case of remote | |
365 | debugging on a connection with higher latency, due to the | |
366 | request/reply nature of the RSP. We only cache data for a single | |
367 | file descriptor at a time. */ | |
368 | struct readahead_cache readahead_cache; | |
369 | ||
370 | /* The list of already fetched and acknowledged stop events. This | |
371 | queue is used for notification Stop, and other notifications | |
372 | don't need queue for their events, because the notification | |
373 | events of Stop can't be consumed immediately, so that events | |
374 | should be queued first, and be consumed by remote_wait_{ns,as} | |
375 | one per time. Other notifications can consume their events | |
376 | immediately, so queue is not needed for them. */ | |
953edf2b | 377 | std::vector<stop_reply_up> stop_reply_queue; |
3c69da40 PA |
378 | |
379 | /* Asynchronous signal handle registered as event loop source for | |
380 | when we have pending events ready to be passed to the core. */ | |
381 | struct async_event_handler *remote_async_inferior_event_token = nullptr; | |
382 | ||
383 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with | |
384 | ``forever'' still use the normal timeout mechanism. This is | |
385 | currently used by the ASYNC code to guarentee that target reads | |
386 | during the initial connect always time-out. Once getpkt has been | |
387 | modified to return a timeout indication and, in turn | |
388 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
389 | this can go away. */ | |
390 | int wait_forever_enabled_p = 1; | |
391 | ||
392 | private: | |
393 | /* Mapping of remote protocol data for each gdbarch. Usually there | |
394 | is only one entry here, though we may see more with stubs that | |
395 | support multi-process. */ | |
396 | std::unordered_map<struct gdbarch *, remote_arch_state> | |
397 | m_arch_states; | |
398 | }; | |
6b8edb51 | 399 | |
d9f719f1 PA |
400 | static const target_info remote_target_info = { |
401 | "remote", | |
402 | N_("Remote serial target in gdb-specific protocol"), | |
403 | remote_doc | |
404 | }; | |
405 | ||
3b3dac9b | 406 | class remote_target : public process_stratum_target |
f6ac5f3d PA |
407 | { |
408 | public: | |
3b3dac9b | 409 | remote_target () = default; |
6b8edb51 | 410 | ~remote_target () override; |
f6ac5f3d | 411 | |
d9f719f1 PA |
412 | const target_info &info () const override |
413 | { return remote_target_info; } | |
f6ac5f3d | 414 | |
121b3efd PA |
415 | const char *connection_string () override; |
416 | ||
f6ac5f3d PA |
417 | thread_control_capabilities get_thread_control_capabilities () override |
418 | { return tc_schedlock; } | |
419 | ||
d9f719f1 PA |
420 | /* Open a remote connection. */ |
421 | static void open (const char *, int); | |
422 | ||
f6ac5f3d PA |
423 | void close () override; |
424 | ||
425 | void detach (inferior *, int) override; | |
426 | void disconnect (const char *, int) override; | |
427 | ||
428 | void commit_resume () override; | |
429 | void resume (ptid_t, int, enum gdb_signal) override; | |
b60cea74 | 430 | ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override; |
f6ac5f3d PA |
431 | |
432 | void fetch_registers (struct regcache *, int) override; | |
433 | void store_registers (struct regcache *, int) override; | |
434 | void prepare_to_store (struct regcache *) override; | |
435 | ||
436 | void files_info () override; | |
437 | ||
438 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
439 | ||
440 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
441 | enum remove_bp_reason) override; | |
442 | ||
443 | ||
57810aa7 PA |
444 | bool stopped_by_sw_breakpoint () override; |
445 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 446 | |
57810aa7 | 447 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 448 | |
57810aa7 | 449 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 450 | |
57810aa7 | 451 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 452 | |
57810aa7 | 453 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 454 | |
57810aa7 | 455 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
456 | |
457 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
458 | ||
459 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
460 | ||
461 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
462 | ||
463 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
464 | ||
465 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
466 | struct expression *) override; | |
467 | ||
468 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
469 | struct expression *) override; | |
470 | ||
471 | void kill () override; | |
472 | ||
473 | void load (const char *, int) override; | |
474 | ||
475 | void mourn_inferior () override; | |
476 | ||
adc6a863 | 477 | void pass_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d PA |
478 | |
479 | int set_syscall_catchpoint (int, bool, int, | |
480 | gdb::array_view<const int>) override; | |
481 | ||
adc6a863 | 482 | void program_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d | 483 | |
57810aa7 | 484 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
485 | |
486 | const char *thread_name (struct thread_info *) override; | |
487 | ||
488 | void update_thread_list () override; | |
489 | ||
a068643d | 490 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
491 | |
492 | const char *extra_thread_info (struct thread_info *) override; | |
493 | ||
494 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
495 | ||
496 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
497 | int handle_len, | |
498 | inferior *inf) override; | |
499 | ||
3d6c6204 KB |
500 | gdb::byte_vector thread_info_to_thread_handle (struct thread_info *tp) |
501 | override; | |
502 | ||
f6ac5f3d PA |
503 | void stop (ptid_t) override; |
504 | ||
505 | void interrupt () override; | |
506 | ||
507 | void pass_ctrlc () override; | |
508 | ||
509 | enum target_xfer_status xfer_partial (enum target_object object, | |
510 | const char *annex, | |
511 | gdb_byte *readbuf, | |
512 | const gdb_byte *writebuf, | |
513 | ULONGEST offset, ULONGEST len, | |
514 | ULONGEST *xfered_len) override; | |
515 | ||
516 | ULONGEST get_memory_xfer_limit () override; | |
517 | ||
518 | void rcmd (const char *command, struct ui_file *output) override; | |
519 | ||
520 | char *pid_to_exec_file (int pid) override; | |
521 | ||
522 | void log_command (const char *cmd) override | |
523 | { | |
524 | serial_log_command (this, cmd); | |
525 | } | |
526 | ||
527 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
528 | CORE_ADDR load_module_addr, | |
529 | CORE_ADDR offset) override; | |
530 | ||
57810aa7 | 531 | bool can_execute_reverse () override; |
f6ac5f3d PA |
532 | |
533 | std::vector<mem_region> memory_map () override; | |
534 | ||
535 | void flash_erase (ULONGEST address, LONGEST length) override; | |
536 | ||
537 | void flash_done () override; | |
538 | ||
539 | const struct target_desc *read_description () override; | |
540 | ||
541 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
542 | const gdb_byte *pattern, ULONGEST pattern_len, | |
543 | CORE_ADDR *found_addrp) override; | |
544 | ||
57810aa7 | 545 | bool can_async_p () override; |
f6ac5f3d | 546 | |
57810aa7 | 547 | bool is_async_p () override; |
f6ac5f3d PA |
548 | |
549 | void async (int) override; | |
550 | ||
5b6d1e4f PA |
551 | int async_wait_fd () override; |
552 | ||
f6ac5f3d PA |
553 | void thread_events (int) override; |
554 | ||
555 | int can_do_single_step () override; | |
556 | ||
557 | void terminal_inferior () override; | |
558 | ||
559 | void terminal_ours () override; | |
560 | ||
57810aa7 | 561 | bool supports_non_stop () override; |
f6ac5f3d | 562 | |
57810aa7 | 563 | bool supports_multi_process () override; |
f6ac5f3d | 564 | |
57810aa7 | 565 | bool supports_disable_randomization () override; |
f6ac5f3d | 566 | |
57810aa7 | 567 | bool filesystem_is_local () override; |
f6ac5f3d PA |
568 | |
569 | ||
570 | int fileio_open (struct inferior *inf, const char *filename, | |
571 | int flags, int mode, int warn_if_slow, | |
572 | int *target_errno) override; | |
573 | ||
574 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
575 | ULONGEST offset, int *target_errno) override; | |
576 | ||
577 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
578 | ULONGEST offset, int *target_errno) override; | |
579 | ||
580 | int fileio_fstat (int fd, struct stat *sb, int *target_errno) override; | |
581 | ||
582 | int fileio_close (int fd, int *target_errno) override; | |
583 | ||
584 | int fileio_unlink (struct inferior *inf, | |
585 | const char *filename, | |
586 | int *target_errno) override; | |
587 | ||
588 | gdb::optional<std::string> | |
589 | fileio_readlink (struct inferior *inf, | |
590 | const char *filename, | |
591 | int *target_errno) override; | |
592 | ||
57810aa7 | 593 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 594 | |
57810aa7 | 595 | bool supports_string_tracing () override; |
f6ac5f3d | 596 | |
57810aa7 | 597 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 598 | |
57810aa7 | 599 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
600 | |
601 | void trace_init () override; | |
602 | ||
603 | void download_tracepoint (struct bp_location *location) override; | |
604 | ||
57810aa7 | 605 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
606 | |
607 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
608 | ||
609 | void enable_tracepoint (struct bp_location *location) override; | |
610 | ||
611 | void disable_tracepoint (struct bp_location *location) override; | |
612 | ||
613 | void trace_set_readonly_regions () override; | |
614 | ||
615 | void trace_start () override; | |
616 | ||
617 | int get_trace_status (struct trace_status *ts) override; | |
618 | ||
619 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
620 | override; | |
621 | ||
622 | void trace_stop () override; | |
623 | ||
624 | int trace_find (enum trace_find_type type, int num, | |
625 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
626 | ||
57810aa7 | 627 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
628 | |
629 | int save_trace_data (const char *filename) override; | |
630 | ||
631 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
632 | ||
633 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
634 | ||
635 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
636 | ||
637 | int get_min_fast_tracepoint_insn_len () override; | |
638 | ||
639 | void set_disconnected_tracing (int val) override; | |
640 | ||
641 | void set_circular_trace_buffer (int val) override; | |
642 | ||
643 | void set_trace_buffer_size (LONGEST val) override; | |
644 | ||
57810aa7 PA |
645 | bool set_trace_notes (const char *user, const char *notes, |
646 | const char *stopnotes) override; | |
f6ac5f3d PA |
647 | |
648 | int core_of_thread (ptid_t ptid) override; | |
649 | ||
650 | int verify_memory (const gdb_byte *data, | |
651 | CORE_ADDR memaddr, ULONGEST size) override; | |
652 | ||
653 | ||
57810aa7 | 654 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
655 | |
656 | void set_permissions () override; | |
657 | ||
658 | bool static_tracepoint_marker_at (CORE_ADDR, | |
659 | struct static_tracepoint_marker *marker) | |
660 | override; | |
661 | ||
662 | std::vector<static_tracepoint_marker> | |
663 | static_tracepoint_markers_by_strid (const char *id) override; | |
664 | ||
665 | traceframe_info_up traceframe_info () override; | |
666 | ||
57810aa7 PA |
667 | bool use_agent (bool use) override; |
668 | bool can_use_agent () override; | |
f6ac5f3d PA |
669 | |
670 | struct btrace_target_info *enable_btrace (ptid_t ptid, | |
671 | const struct btrace_config *conf) override; | |
672 | ||
673 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
674 | ||
675 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
676 | ||
677 | enum btrace_error read_btrace (struct btrace_data *data, | |
678 | struct btrace_target_info *btinfo, | |
679 | enum btrace_read_type type) override; | |
680 | ||
681 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 682 | bool augmented_libraries_svr4_read () override; |
5ab2fbf1 | 683 | bool follow_fork (bool, bool) override; |
4ca51187 | 684 | void follow_exec (struct inferior *, const char *) override; |
f6ac5f3d PA |
685 | int insert_fork_catchpoint (int) override; |
686 | int remove_fork_catchpoint (int) override; | |
687 | int insert_vfork_catchpoint (int) override; | |
688 | int remove_vfork_catchpoint (int) override; | |
689 | int insert_exec_catchpoint (int) override; | |
690 | int remove_exec_catchpoint (int) override; | |
691 | enum exec_direction_kind execution_direction () override; | |
692 | ||
dbe692af LM |
693 | bool supports_memory_tagging () override; |
694 | ||
695 | bool fetch_memtags (CORE_ADDR address, size_t len, | |
696 | gdb::byte_vector &tags, int type) override; | |
697 | ||
698 | bool store_memtags (CORE_ADDR address, size_t len, | |
699 | const gdb::byte_vector &tags, int type) override; | |
700 | ||
6b8edb51 PA |
701 | public: /* Remote specific methods. */ |
702 | ||
703 | void remote_download_command_source (int num, ULONGEST addr, | |
704 | struct command_line *cmds); | |
705 | ||
706 | void remote_file_put (const char *local_file, const char *remote_file, | |
707 | int from_tty); | |
708 | void remote_file_get (const char *remote_file, const char *local_file, | |
709 | int from_tty); | |
710 | void remote_file_delete (const char *remote_file, int from_tty); | |
711 | ||
712 | int remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
713 | ULONGEST offset, int *remote_errno); | |
714 | int remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
715 | ULONGEST offset, int *remote_errno); | |
716 | int remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
717 | ULONGEST offset, int *remote_errno); | |
718 | ||
719 | int remote_hostio_send_command (int command_bytes, int which_packet, | |
aa2838cc | 720 | int *remote_errno, const char **attachment, |
6b8edb51 PA |
721 | int *attachment_len); |
722 | int remote_hostio_set_filesystem (struct inferior *inf, | |
723 | int *remote_errno); | |
724 | /* We should get rid of this and use fileio_open directly. */ | |
725 | int remote_hostio_open (struct inferior *inf, const char *filename, | |
726 | int flags, int mode, int warn_if_slow, | |
727 | int *remote_errno); | |
728 | int remote_hostio_close (int fd, int *remote_errno); | |
729 | ||
730 | int remote_hostio_unlink (inferior *inf, const char *filename, | |
731 | int *remote_errno); | |
732 | ||
733 | struct remote_state *get_remote_state (); | |
734 | ||
735 | long get_remote_packet_size (void); | |
736 | long get_memory_packet_size (struct memory_packet_config *config); | |
737 | ||
738 | long get_memory_write_packet_size (); | |
739 | long get_memory_read_packet_size (); | |
740 | ||
741 | char *append_pending_thread_resumptions (char *p, char *endp, | |
742 | ptid_t ptid); | |
d9f719f1 | 743 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d | 744 | void start_remote (int from_tty, int extended_p); |
00431a78 | 745 | void remote_detach_1 (struct inferior *inf, int from_tty); |
6b8edb51 PA |
746 | |
747 | char *append_resumption (char *p, char *endp, | |
748 | ptid_t ptid, int step, gdb_signal siggnal); | |
749 | int remote_resume_with_vcont (ptid_t ptid, int step, | |
750 | gdb_signal siggnal); | |
751 | ||
64d38fdd | 752 | thread_info *add_current_inferior_and_thread (const char *wait_status); |
6b8edb51 PA |
753 | |
754 | ptid_t wait_ns (ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 755 | target_wait_flags options); |
6b8edb51 | 756 | ptid_t wait_as (ptid_t ptid, target_waitstatus *status, |
b60cea74 | 757 | target_wait_flags options); |
6b8edb51 PA |
758 | |
759 | ptid_t process_stop_reply (struct stop_reply *stop_reply, | |
760 | target_waitstatus *status); | |
761 | ||
8f66807b AB |
762 | ptid_t select_thread_for_ambiguous_stop_reply |
763 | (const struct target_waitstatus *status); | |
764 | ||
6b8edb51 PA |
765 | void remote_notice_new_inferior (ptid_t currthread, int executing); |
766 | ||
767 | void process_initial_stop_replies (int from_tty); | |
768 | ||
00431a78 | 769 | thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing); |
6b8edb51 PA |
770 | |
771 | void btrace_sync_conf (const btrace_config *conf); | |
772 | ||
773 | void remote_btrace_maybe_reopen (); | |
774 | ||
775 | void remove_new_fork_children (threads_listing_context *context); | |
776 | void kill_new_fork_children (int pid); | |
777 | void discard_pending_stop_replies (struct inferior *inf); | |
778 | int stop_reply_queue_length (); | |
779 | ||
780 | void check_pending_events_prevent_wildcard_vcont | |
781 | (int *may_global_wildcard_vcont); | |
782 | ||
783 | void discard_pending_stop_replies_in_queue (); | |
784 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
785 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
786 | int peek_stop_reply (ptid_t ptid); | |
bb277751 | 787 | void remote_parse_stop_reply (const char *buf, stop_reply *event); |
6b8edb51 PA |
788 | |
789 | void remote_stop_ns (ptid_t ptid); | |
790 | void remote_interrupt_as (); | |
791 | void remote_interrupt_ns (); | |
792 | ||
793 | char *remote_get_noisy_reply (); | |
794 | int remote_query_attached (int pid); | |
9ab8741a | 795 | inferior *remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 PA |
796 | int try_open_exec); |
797 | ||
798 | ptid_t remote_current_thread (ptid_t oldpid); | |
e3b2741b | 799 | ptid_t get_current_thread (const char *wait_status); |
6b8edb51 PA |
800 | |
801 | void set_thread (ptid_t ptid, int gen); | |
802 | void set_general_thread (ptid_t ptid); | |
803 | void set_continue_thread (ptid_t ptid); | |
804 | void set_general_process (); | |
805 | ||
806 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
807 | ||
cecb1912 | 808 | int remote_unpack_thread_info_response (const char *pkt, threadref *expectedref, |
6b8edb51 PA |
809 | gdb_ext_thread_info *info); |
810 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
811 | gdb_ext_thread_info *info); | |
812 | ||
cecb1912 | 813 | int parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
814 | threadref *original_echo, |
815 | threadref *resultlist, | |
816 | int *doneflag); | |
817 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
818 | int result_limit, int *done, int *result_count, | |
819 | threadref *threadlist); | |
820 | ||
821 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
822 | void *context, int looplimit); | |
823 | ||
824 | int remote_get_threads_with_ql (threads_listing_context *context); | |
825 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
826 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
827 | ||
828 | void extended_remote_restart (); | |
829 | ||
830 | void get_offsets (); | |
831 | ||
832 | void remote_check_symbols (); | |
833 | ||
834 | void remote_supported_packet (const struct protocol_feature *feature, | |
835 | enum packet_support support, | |
836 | const char *argument); | |
837 | ||
838 | void remote_query_supported (); | |
839 | ||
840 | void remote_packet_size (const protocol_feature *feature, | |
841 | packet_support support, const char *value); | |
842 | ||
843 | void remote_serial_quit_handler (); | |
844 | ||
845 | void remote_detach_pid (int pid); | |
846 | ||
847 | void remote_vcont_probe (); | |
848 | ||
849 | void remote_resume_with_hc (ptid_t ptid, int step, | |
850 | gdb_signal siggnal); | |
851 | ||
852 | void send_interrupt_sequence (); | |
853 | void interrupt_query (); | |
854 | ||
855 | void remote_notif_get_pending_events (notif_client *nc); | |
856 | ||
857 | int fetch_register_using_p (struct regcache *regcache, | |
858 | packet_reg *reg); | |
859 | int send_g_packet (); | |
860 | void process_g_packet (struct regcache *regcache); | |
861 | void fetch_registers_using_g (struct regcache *regcache); | |
862 | int store_register_using_P (const struct regcache *regcache, | |
863 | packet_reg *reg); | |
864 | void store_registers_using_G (const struct regcache *regcache); | |
865 | ||
866 | void set_remote_traceframe (); | |
867 | ||
868 | void check_binary_download (CORE_ADDR addr); | |
869 | ||
870 | target_xfer_status remote_write_bytes_aux (const char *header, | |
871 | CORE_ADDR memaddr, | |
872 | const gdb_byte *myaddr, | |
873 | ULONGEST len_units, | |
874 | int unit_size, | |
875 | ULONGEST *xfered_len_units, | |
876 | char packet_format, | |
877 | int use_length); | |
878 | ||
879 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
880 | const gdb_byte *myaddr, ULONGEST len, | |
881 | int unit_size, ULONGEST *xfered_len); | |
882 | ||
883 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
884 | ULONGEST len_units, | |
885 | int unit_size, ULONGEST *xfered_len_units); | |
886 | ||
887 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
888 | ULONGEST memaddr, | |
889 | ULONGEST len, | |
890 | int unit_size, | |
891 | ULONGEST *xfered_len); | |
892 | ||
893 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
894 | gdb_byte *myaddr, ULONGEST len, | |
895 | int unit_size, | |
896 | ULONGEST *xfered_len); | |
897 | ||
898 | packet_result remote_send_printf (const char *format, ...) | |
899 | ATTRIBUTE_PRINTF (2, 3); | |
900 | ||
901 | target_xfer_status remote_flash_write (ULONGEST address, | |
902 | ULONGEST length, ULONGEST *xfered_len, | |
903 | const gdb_byte *data); | |
904 | ||
905 | int readchar (int timeout); | |
906 | ||
907 | void remote_serial_write (const char *str, int len); | |
908 | ||
909 | int putpkt (const char *buf); | |
910 | int putpkt_binary (const char *buf, int cnt); | |
911 | ||
8d64371b TT |
912 | int putpkt (const gdb::char_vector &buf) |
913 | { | |
914 | return putpkt (buf.data ()); | |
915 | } | |
916 | ||
6b8edb51 | 917 | void skip_frame (); |
8d64371b TT |
918 | long read_frame (gdb::char_vector *buf_p); |
919 | void getpkt (gdb::char_vector *buf, int forever); | |
920 | int getpkt_or_notif_sane_1 (gdb::char_vector *buf, int forever, | |
6b8edb51 | 921 | int expecting_notif, int *is_notif); |
8d64371b TT |
922 | int getpkt_sane (gdb::char_vector *buf, int forever); |
923 | int getpkt_or_notif_sane (gdb::char_vector *buf, int forever, | |
6b8edb51 PA |
924 | int *is_notif); |
925 | int remote_vkill (int pid); | |
926 | void remote_kill_k (); | |
927 | ||
928 | void extended_remote_disable_randomization (int val); | |
929 | int extended_remote_run (const std::string &args); | |
930 | ||
931 | void send_environment_packet (const char *action, | |
932 | const char *packet, | |
933 | const char *value); | |
934 | ||
935 | void extended_remote_environment_support (); | |
3c69da40 | 936 | void extended_remote_set_inferior_cwd (); |
80152258 | 937 | |
3c69da40 PA |
938 | target_xfer_status remote_write_qxfer (const char *object_name, |
939 | const char *annex, | |
940 | const gdb_byte *writebuf, | |
941 | ULONGEST offset, LONGEST len, | |
942 | ULONGEST *xfered_len, | |
943 | struct packet_config *packet); | |
43c3a0e4 | 944 | |
3c69da40 PA |
945 | target_xfer_status remote_read_qxfer (const char *object_name, |
946 | const char *annex, | |
947 | gdb_byte *readbuf, ULONGEST offset, | |
948 | LONGEST len, | |
949 | ULONGEST *xfered_len, | |
950 | struct packet_config *packet); | |
43c3a0e4 | 951 | |
3c69da40 | 952 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 953 | |
3c69da40 | 954 | bool vcont_r_supported (); |
43c3a0e4 | 955 | |
3c69da40 | 956 | void packet_command (const char *args, int from_tty); |
43c3a0e4 | 957 | |
3c69da40 | 958 | private: /* data fields */ |
43c3a0e4 | 959 | |
3c69da40 PA |
960 | /* The remote state. Don't reference this directly. Use the |
961 | get_remote_state method instead. */ | |
962 | remote_state m_remote_state; | |
43c3a0e4 PA |
963 | }; |
964 | ||
3c69da40 PA |
965 | static const target_info extended_remote_target_info = { |
966 | "extended-remote", | |
967 | N_("Extended remote serial target in gdb-specific protocol"), | |
968 | remote_doc | |
969 | }; | |
ea9c271d | 970 | |
3c69da40 PA |
971 | /* Set up the extended remote target by extending the standard remote |
972 | target and adding to it. */ | |
973 | ||
974 | class extended_remote_target final : public remote_target | |
ea9c271d | 975 | { |
9d6eea31 | 976 | public: |
3c69da40 PA |
977 | const target_info &info () const override |
978 | { return extended_remote_target_info; } | |
9d6eea31 | 979 | |
3c69da40 PA |
980 | /* Open an extended-remote connection. */ |
981 | static void open (const char *, int); | |
de44f5a7 | 982 | |
3c69da40 PA |
983 | bool can_create_inferior () override { return true; } |
984 | void create_inferior (const char *, const std::string &, | |
985 | char **, int) override; | |
9d6eea31 | 986 | |
3c69da40 | 987 | void detach (inferior *, int) override; |
9d6eea31 | 988 | |
3c69da40 PA |
989 | bool can_attach () override { return true; } |
990 | void attach (const char *, int) override; | |
be2a5f71 | 991 | |
3c69da40 PA |
992 | void post_attach (int) override; |
993 | bool supports_disable_randomization () override; | |
994 | }; | |
1e51243a | 995 | |
3c69da40 | 996 | /* Per-program-space data key. */ |
7b4a314f TT |
997 | static const struct program_space_key<char, gdb::xfree_deleter<char>> |
998 | remote_pspace_data; | |
2d717e4f | 999 | |
3c69da40 PA |
1000 | /* The variable registered as the control variable used by the |
1001 | remote exec-file commands. While the remote exec-file setting is | |
1002 | per-program-space, the set/show machinery uses this as the | |
1003 | location of the remote exec-file value. */ | |
1004 | static char *remote_exec_file_var; | |
a6f3e723 | 1005 | |
3c69da40 PA |
1006 | /* The size to align memory write packets, when practical. The protocol |
1007 | does not guarantee any alignment, and gdb will generate short | |
1008 | writes and unaligned writes, but even as a best-effort attempt this | |
1009 | can improve bulk transfers. For instance, if a write is misaligned | |
1010 | relative to the target's data bus, the stub may need to make an extra | |
1011 | round trip fetching data from the target. This doesn't make a | |
1012 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 1013 | |
3c69da40 PA |
1014 | The alignment chosen is arbitrary; usually data bus width is |
1015 | important here, not the possibly larger cache line size. */ | |
1016 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 1017 | |
3c69da40 | 1018 | /* Prototypes for local functions. */ |
74531fed | 1019 | |
3c69da40 | 1020 | static int hexnumlen (ULONGEST num); |
782b2b07 | 1021 | |
3c69da40 | 1022 | static int stubhex (int ch); |
5d93a237 | 1023 | |
3c69da40 | 1024 | static int hexnumstr (char *, ULONGEST); |
048094ac | 1025 | |
3c69da40 | 1026 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 1027 | |
3c69da40 | 1028 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1029 | |
3c69da40 | 1030 | static void print_packet (const char *); |
747dc59d | 1031 | |
cecb1912 | 1032 | static int stub_unpack_int (const char *buff, int fieldlength); |
5e4a05c4 | 1033 | |
3c69da40 | 1034 | struct packet_config; |
b73be471 | 1035 | |
3c69da40 | 1036 | static void show_packet_config_cmd (struct packet_config *config); |
280ceea3 | 1037 | |
3c69da40 PA |
1038 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1039 | int from_tty, | |
1040 | struct cmd_list_element *c, | |
1041 | const char *value); | |
8e88304f | 1042 | |
3c69da40 | 1043 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1044 | |
3c69da40 | 1045 | static void remote_async_inferior_event_handler (gdb_client_data); |
b80fafe3 | 1046 | |
eefce37f | 1047 | static bool remote_read_description_p (struct target_ops *target); |
88b496c3 | 1048 | |
05be00a8 | 1049 | static void remote_console_output (const char *msg); |
5965e028 | 1050 | |
3c69da40 | 1051 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1052 | |
5b6d1e4f | 1053 | static void remote_unpush_and_throw (remote_target *target); |
15a201c8 | 1054 | |
3c69da40 | 1055 | /* For "remote". */ |
80152258 | 1056 | |
3c69da40 | 1057 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1058 | |
3c69da40 | 1059 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1060 | |
3c69da40 PA |
1061 | static struct cmd_list_element *remote_set_cmdlist; |
1062 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1063 | |
3c69da40 | 1064 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1065 | |
491144b5 | 1066 | static bool use_range_stepping = true; |
3c69da40 | 1067 | |
c9d22089 SM |
1068 | /* From the remote target's point of view, each thread is in one of these three |
1069 | states. */ | |
1070 | enum class resume_state | |
1071 | { | |
1072 | /* Not resumed - we haven't been asked to resume this thread. */ | |
1073 | NOT_RESUMED, | |
1074 | ||
1075 | /* We have been asked to resume this thread, but haven't sent a vCont action | |
1076 | for it yet. We'll need to consider it next time commit_resume is | |
1077 | called. */ | |
1078 | RESUMED_PENDING_VCONT, | |
1079 | ||
1080 | /* We have been asked to resume this thread, and we have sent a vCont action | |
1081 | for it. */ | |
1082 | RESUMED, | |
1083 | }; | |
1084 | ||
1085 | /* Information about a thread's pending vCont-resume. Used when a thread is in | |
1086 | the remote_resume_state::RESUMED_PENDING_VCONT state. remote_target::resume | |
1087 | stores this information which is then picked up by | |
1088 | remote_target::commit_resume to know which is the proper action for this | |
1089 | thread to include in the vCont packet. */ | |
1090 | struct resumed_pending_vcont_info | |
1091 | { | |
1092 | /* True if the last resume call for this thread was a step request, false | |
1093 | if a continue request. */ | |
1094 | bool step; | |
1095 | ||
1096 | /* The signal specified in the last resume call for this thread. */ | |
1097 | gdb_signal sig; | |
1098 | }; | |
1099 | ||
7aabaf9d SM |
1100 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1101 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1102 | { |
7aabaf9d SM |
1103 | std::string extra; |
1104 | std::string name; | |
1105 | int core = -1; | |
799a2abe | 1106 | |
f6327dcb KB |
1107 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1108 | sequence of bytes. */ | |
7aabaf9d | 1109 | gdb::byte_vector thread_handle; |
f6327dcb | 1110 | |
799a2abe | 1111 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1112 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1113 | |
1114 | /* This is set to the data address of the access causing the target | |
1115 | to stop for a watchpoint. */ | |
7aabaf9d | 1116 | CORE_ADDR watch_data_address = 0; |
85ad3aaf | 1117 | |
c9d22089 | 1118 | /* Get the thread's resume state. */ |
a6c11cbb | 1119 | enum resume_state get_resume_state () const |
c9d22089 SM |
1120 | { |
1121 | return m_resume_state; | |
1122 | } | |
1123 | ||
1124 | /* Put the thread in the NOT_RESUMED state. */ | |
1125 | void set_not_resumed () | |
1126 | { | |
1127 | m_resume_state = resume_state::NOT_RESUMED; | |
1128 | } | |
85ad3aaf | 1129 | |
c9d22089 SM |
1130 | /* Put the thread in the RESUMED_PENDING_VCONT state. */ |
1131 | void set_resumed_pending_vcont (bool step, gdb_signal sig) | |
1132 | { | |
1133 | m_resume_state = resume_state::RESUMED_PENDING_VCONT; | |
1134 | m_resumed_pending_vcont_info.step = step; | |
1135 | m_resumed_pending_vcont_info.sig = sig; | |
1136 | } | |
85ad3aaf | 1137 | |
c9d22089 | 1138 | /* Get the information this thread's pending vCont-resumption. |
85ad3aaf | 1139 | |
c9d22089 SM |
1140 | Must only be called if the thread is in the RESUMED_PENDING_VCONT resume |
1141 | state. */ | |
1142 | const struct resumed_pending_vcont_info &resumed_pending_vcont_info () const | |
1143 | { | |
1144 | gdb_assert (m_resume_state == resume_state::RESUMED_PENDING_VCONT); | |
1145 | ||
1146 | return m_resumed_pending_vcont_info; | |
1147 | } | |
1148 | ||
1149 | /* Put the thread in the VCONT_RESUMED state. */ | |
1150 | void set_resumed () | |
1151 | { | |
1152 | m_resume_state = resume_state::RESUMED; | |
1153 | } | |
1154 | ||
1155 | private: | |
1156 | /* Resume state for this thread. This is used to implement vCont action | |
1157 | coalescing (only when the target operates in non-stop mode). | |
1158 | ||
1159 | remote_target::resume moves the thread to the RESUMED_PENDING_VCONT state, | |
1160 | which notes that this thread must be considered in the next commit_resume | |
1161 | call. | |
1162 | ||
1163 | remote_target::commit_resume sends a vCont packet with actions for the | |
1164 | threads in the RESUMED_PENDING_VCONT state and moves them to the | |
1165 | VCONT_RESUMED state. | |
1166 | ||
1167 | When reporting a stop to the core for a thread, that thread is moved back | |
1168 | to the NOT_RESUMED state. */ | |
1169 | enum resume_state m_resume_state = resume_state::NOT_RESUMED; | |
1170 | ||
1171 | /* Extra info used if the thread is in the RESUMED_PENDING_VCONT state. */ | |
1172 | struct resumed_pending_vcont_info m_resumed_pending_vcont_info; | |
dc146f7c VP |
1173 | }; |
1174 | ||
de44f5a7 | 1175 | remote_state::remote_state () |
8d64371b | 1176 | : buf (400) |
de44f5a7 | 1177 | { |
de44f5a7 PA |
1178 | } |
1179 | ||
1180 | remote_state::~remote_state () | |
1181 | { | |
1182 | xfree (this->last_pass_packet); | |
1183 | xfree (this->last_program_signals_packet); | |
de44f5a7 PA |
1184 | xfree (this->finished_object); |
1185 | xfree (this->finished_annex); | |
cf792862 TT |
1186 | } |
1187 | ||
35b1e5cc SS |
1188 | /* Utility: generate error from an incoming stub packet. */ |
1189 | static void | |
1190 | trace_error (char *buf) | |
1191 | { | |
1192 | if (*buf++ != 'E') | |
1193 | return; /* not an error msg */ | |
1194 | switch (*buf) | |
1195 | { | |
1196 | case '1': /* malformed packet error */ | |
1197 | if (*++buf == '0') /* general case: */ | |
1198 | error (_("remote.c: error in outgoing packet.")); | |
1199 | else | |
1200 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1201 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1202 | default: |
1203 | error (_("Target returns error code '%s'."), buf); | |
1204 | } | |
1205 | } | |
1206 | ||
1207 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1208 | |
6b8edb51 PA |
1209 | char * |
1210 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1211 | { |
b6bb3468 PA |
1212 | struct remote_state *rs = get_remote_state (); |
1213 | ||
35b1e5cc SS |
1214 | do /* Loop on reply from remote stub. */ |
1215 | { | |
1216 | char *buf; | |
a744cf53 | 1217 | |
0df8b418 | 1218 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b TT |
1219 | getpkt (&rs->buf, 0); |
1220 | buf = rs->buf.data (); | |
ad91cd99 | 1221 | if (buf[0] == 'E') |
35b1e5cc | 1222 | trace_error (buf); |
61012eef | 1223 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1224 | { |
1225 | ULONGEST ul; | |
1226 | CORE_ADDR from, to, org_to; | |
256642e8 | 1227 | const char *p, *pp; |
dde08ee1 | 1228 | int adjusted_size = 0; |
7556d4a4 | 1229 | int relocated = 0; |
dde08ee1 PA |
1230 | |
1231 | p = buf + strlen ("qRelocInsn:"); | |
1232 | pp = unpack_varlen_hex (p, &ul); | |
1233 | if (*pp != ';') | |
cb91c06a | 1234 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1235 | from = ul; |
1236 | ||
1237 | p = pp + 1; | |
a9cbf802 | 1238 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1239 | to = ul; |
1240 | ||
1241 | org_to = to; | |
1242 | ||
a70b8144 | 1243 | try |
dde08ee1 | 1244 | { |
f5656ead | 1245 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 1246 | relocated = 1; |
dde08ee1 | 1247 | } |
230d2906 | 1248 | catch (const gdb_exception &ex) |
7556d4a4 PA |
1249 | { |
1250 | if (ex.error == MEMORY_ERROR) | |
1251 | { | |
1252 | /* Propagate memory errors silently back to the | |
1253 | target. The stub may have limited the range of | |
1254 | addresses we can write to, for example. */ | |
1255 | } | |
1256 | else | |
1257 | { | |
1258 | /* Something unexpectedly bad happened. Be verbose | |
1259 | so we can tell what, and propagate the error back | |
1260 | to the stub, so it doesn't get stuck waiting for | |
1261 | a response. */ | |
1262 | exception_fprintf (gdb_stderr, ex, | |
1263 | _("warning: relocating instruction: ")); | |
1264 | } | |
1265 | putpkt ("E01"); | |
1266 | } | |
1267 | ||
1268 | if (relocated) | |
dde08ee1 PA |
1269 | { |
1270 | adjusted_size = to - org_to; | |
1271 | ||
8d64371b | 1272 | xsnprintf (buf, rs->buf.size (), "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1273 | putpkt (buf); |
1274 | } | |
dde08ee1 | 1275 | } |
ad91cd99 | 1276 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1277 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1278 | else | |
0df8b418 | 1279 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1280 | } |
1281 | while (1); | |
1282 | } | |
3c3bea1c | 1283 | |
9d6eea31 PA |
1284 | struct remote_arch_state * |
1285 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1286 | { |
43c3a0e4 PA |
1287 | remote_arch_state *rsa; |
1288 | ||
1289 | auto it = this->m_arch_states.find (gdbarch); | |
1290 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1291 | { |
43c3a0e4 PA |
1292 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1293 | std::forward_as_tuple (gdbarch), | |
1294 | std::forward_as_tuple (gdbarch)); | |
1295 | rsa = &p.first->second; | |
9d6eea31 PA |
1296 | |
1297 | /* Make sure that the packet buffer is plenty big enough for | |
1298 | this architecture. */ | |
8d64371b TT |
1299 | if (this->buf.size () < rsa->remote_packet_size) |
1300 | this->buf.resize (2 * rsa->remote_packet_size); | |
9d6eea31 | 1301 | } |
43c3a0e4 PA |
1302 | else |
1303 | rsa = &it->second; | |
1304 | ||
1305 | return rsa; | |
d01949b6 AC |
1306 | } |
1307 | ||
0b83947e DJ |
1308 | /* Fetch the global remote target state. */ |
1309 | ||
6b8edb51 PA |
1310 | remote_state * |
1311 | remote_target::get_remote_state () | |
0b83947e DJ |
1312 | { |
1313 | /* Make sure that the remote architecture state has been | |
1314 | initialized, because doing so might reallocate rs->buf. Any | |
1315 | function which calls getpkt also needs to be mindful of changes | |
1316 | to rs->buf, but this call limits the number of places which run | |
1317 | into trouble. */ | |
3c69da40 | 1318 | m_remote_state.get_remote_arch_state (target_gdbarch ()); |
0b83947e | 1319 | |
3c69da40 | 1320 | return &m_remote_state; |
0b83947e DJ |
1321 | } |
1322 | ||
94585166 DB |
1323 | /* Fetch the remote exec-file from the current program space. */ |
1324 | ||
1325 | static const char * | |
1326 | get_remote_exec_file (void) | |
1327 | { | |
1328 | char *remote_exec_file; | |
1329 | ||
7b4a314f | 1330 | remote_exec_file = remote_pspace_data.get (current_program_space); |
94585166 DB |
1331 | if (remote_exec_file == NULL) |
1332 | return ""; | |
1333 | ||
1334 | return remote_exec_file; | |
1335 | } | |
1336 | ||
1337 | /* Set the remote exec file for PSPACE. */ | |
1338 | ||
1339 | static void | |
1340 | set_pspace_remote_exec_file (struct program_space *pspace, | |
7b4a314f | 1341 | const char *remote_exec_file) |
94585166 | 1342 | { |
7b4a314f | 1343 | char *old_file = remote_pspace_data.get (pspace); |
94585166 DB |
1344 | |
1345 | xfree (old_file); | |
7b4a314f | 1346 | remote_pspace_data.set (pspace, xstrdup (remote_exec_file)); |
94585166 DB |
1347 | } |
1348 | ||
1349 | /* The "set/show remote exec-file" set command hook. */ | |
1350 | ||
1351 | static void | |
eb4c3f4a | 1352 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1353 | struct cmd_list_element *c) |
1354 | { | |
1355 | gdb_assert (remote_exec_file_var != NULL); | |
1356 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
1357 | } | |
1358 | ||
1359 | /* The "set/show remote exec-file" show command hook. */ | |
1360 | ||
1361 | static void | |
1362 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1363 | struct cmd_list_element *cmd, const char *value) | |
1364 | { | |
acdf84a6 | 1365 | fprintf_filtered (file, "%s\n", get_remote_exec_file ()); |
94585166 DB |
1366 | } |
1367 | ||
c21236dc PA |
1368 | static int |
1369 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1370 | { |
74ca34ce | 1371 | int regnum, num_remote_regs, offset; |
74ca34ce | 1372 | struct packet_reg **remote_regs; |
ea9c271d | 1373 | |
4a22f64d | 1374 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1375 | { |
c21236dc | 1376 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1377 | |
4a22f64d | 1378 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1379 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1380 | r->pnum = -1; | |
1381 | else | |
1382 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1383 | ||
b323314b | 1384 | r->regnum = regnum; |
74ca34ce DJ |
1385 | } |
1386 | ||
1387 | /* Define the g/G packet format as the contents of each register | |
1388 | with a remote protocol number, in order of ascending protocol | |
1389 | number. */ | |
1390 | ||
224c3ddb | 1391 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1392 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1393 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1394 | regnum++) |
c21236dc PA |
1395 | if (regs[regnum].pnum != -1) |
1396 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1397 | |
39ef2f62 CB |
1398 | std::sort (remote_regs, remote_regs + num_remote_regs, |
1399 | [] (const packet_reg *a, const packet_reg *b) | |
1400 | { return a->pnum < b->pnum; }); | |
74ca34ce DJ |
1401 | |
1402 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1403 | { | |
1404 | remote_regs[regnum]->in_g_packet = 1; | |
1405 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1406 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1407 | } |
1408 | ||
c21236dc PA |
1409 | return offset; |
1410 | } | |
1411 | ||
1412 | /* Given the architecture described by GDBARCH, return the remote | |
1413 | protocol register's number and the register's offset in the g/G | |
1414 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1415 | If the target does not have a mapping for REGNUM, return false, | |
1416 | otherwise, return true. */ | |
1417 | ||
1418 | int | |
1419 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1420 | int *pnum, int *poffset) | |
1421 | { | |
c21236dc PA |
1422 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1423 | ||
b80406ac | 1424 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1425 | |
b80406ac | 1426 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1427 | |
1428 | *pnum = regs[regnum].pnum; | |
1429 | *poffset = regs[regnum].offset; | |
1430 | ||
c21236dc PA |
1431 | return *pnum != -1; |
1432 | } | |
1433 | ||
9d6eea31 | 1434 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1435 | { |
c21236dc PA |
1436 | /* Use the architecture to build a regnum<->pnum table, which will be |
1437 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1438 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1439 | |
74ca34ce DJ |
1440 | /* Record the maximum possible size of the g packet - it may turn out |
1441 | to be smaller. */ | |
9d6eea31 PA |
1442 | this->sizeof_g_packet |
1443 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1444 | |
0df8b418 | 1445 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1446 | remote stubs have a hardwired buffer size of 400 bytes |
1447 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1448 | as the maximum packet-size to ensure that the packet and an extra | |
1449 | NUL character can always fit in the buffer. This stops GDB | |
1450 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1451 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1452 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1453 | |
ea9c271d | 1454 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1455 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1456 | |
1457 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1458 | default, adjust the size accordingly. Remember that each byte is |
1459 | encoded as two characters. 32 is the overhead for the packet | |
1460 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1461 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1462 | little. */ |
9d6eea31 PA |
1463 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1464 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1465 | } |
1466 | ||
6b8edb51 PA |
1467 | /* Get a pointer to the current remote target. If not connected to a |
1468 | remote target, return NULL. */ | |
1469 | ||
1470 | static remote_target * | |
1471 | get_current_remote_target () | |
1472 | { | |
5b6d1e4f | 1473 | target_ops *proc_target = current_inferior ()->process_target (); |
6b8edb51 PA |
1474 | return dynamic_cast<remote_target *> (proc_target); |
1475 | } | |
1476 | ||
ea9c271d DJ |
1477 | /* Return the current allowed size of a remote packet. This is |
1478 | inferred from the current architecture, and should be used to | |
1479 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1480 | long |
1481 | remote_target::get_remote_packet_size () | |
ea9c271d | 1482 | { |
be2a5f71 | 1483 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1484 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1485 | |
be2a5f71 DJ |
1486 | if (rs->explicit_packet_size) |
1487 | return rs->explicit_packet_size; | |
1488 | ||
ea9c271d | 1489 | return rsa->remote_packet_size; |
d01949b6 AC |
1490 | } |
1491 | ||
ad10f812 | 1492 | static struct packet_reg * |
5cd63fda PA |
1493 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1494 | long regnum) | |
ad10f812 | 1495 | { |
5cd63fda | 1496 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1497 | return NULL; |
1498 | else | |
ad10f812 | 1499 | { |
ea9c271d | 1500 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1501 | |
b323314b AC |
1502 | gdb_assert (r->regnum == regnum); |
1503 | return r; | |
ad10f812 | 1504 | } |
ad10f812 AC |
1505 | } |
1506 | ||
1507 | static struct packet_reg * | |
5cd63fda PA |
1508 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1509 | LONGEST pnum) | |
ad10f812 | 1510 | { |
b323314b | 1511 | int i; |
a744cf53 | 1512 | |
5cd63fda | 1513 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1514 | { |
ea9c271d | 1515 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1516 | |
b323314b AC |
1517 | if (r->pnum == pnum) |
1518 | return r; | |
ad10f812 AC |
1519 | } |
1520 | return NULL; | |
d01949b6 AC |
1521 | } |
1522 | ||
9a7071a8 JB |
1523 | /* Allow the user to specify what sequence to send to the remote |
1524 | when he requests a program interruption: Although ^C is usually | |
1525 | what remote systems expect (this is the default, here), it is | |
1526 | sometimes preferable to send a break. On other systems such | |
1527 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1528 | is required in order to interrupt the execution. */ | |
1529 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1530 | const char interrupt_sequence_break[] = "BREAK"; | |
1531 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1532 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1533 | { |
1534 | interrupt_sequence_control_c, | |
1535 | interrupt_sequence_break, | |
1536 | interrupt_sequence_break_g, | |
1537 | NULL | |
1538 | }; | |
1539 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1540 | ||
1541 | static void | |
1542 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1543 | struct cmd_list_element *c, | |
1544 | const char *value) | |
1545 | { | |
1546 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
1547 | fprintf_filtered (file, | |
1548 | _("Send the ASCII ETX character (Ctrl-c) " | |
1549 | "to the remote target to interrupt the " | |
1550 | "execution of the program.\n")); | |
1551 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
1552 | fprintf_filtered (file, | |
1553 | _("send a break signal to the remote target " | |
1554 | "to interrupt the execution of the program.\n")); | |
1555 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
1556 | fprintf_filtered (file, | |
1557 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1558 | "the remote target to interrupt the execution " | |
1559 | "of Linux kernel.\n")); | |
1560 | else | |
1561 | internal_error (__FILE__, __LINE__, | |
1562 | _("Invalid value for interrupt_sequence_mode: %s."), | |
1563 | interrupt_sequence_mode); | |
1564 | } | |
6426a772 | 1565 | |
9a7071a8 JB |
1566 | /* This boolean variable specifies whether interrupt_sequence is sent |
1567 | to the remote target when gdb connects to it. | |
1568 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1569 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
491144b5 | 1570 | static bool interrupt_on_connect = false; |
c906108c | 1571 | |
9a7071a8 JB |
1572 | /* This variable is used to implement the "set/show remotebreak" commands. |
1573 | Since these commands are now deprecated in favor of "set/show remote | |
1574 | interrupt-sequence", it no longer has any effect on the code. */ | |
491144b5 | 1575 | static bool remote_break; |
c906108c | 1576 | |
9a7071a8 | 1577 | static void |
eb4c3f4a | 1578 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1579 | { |
1580 | if (remote_break) | |
1581 | interrupt_sequence_mode = interrupt_sequence_break; | |
1582 | else | |
1583 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1584 | } | |
1585 | ||
1586 | static void | |
1587 | show_remotebreak (struct ui_file *file, int from_tty, | |
1588 | struct cmd_list_element *c, | |
1589 | const char *value) | |
1590 | { | |
1591 | } | |
1592 | ||
c906108c SS |
1593 | /* This variable sets the number of bits in an address that are to be |
1594 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1595 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1596 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1597 | initial implementation of remote.c restricted the address sent in | |
1598 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1599 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1600 | address was never sent. Since fixing this bug may cause a break in | |
85102364 | 1601 | some remote targets this variable is principally provided to |
23860348 | 1602 | facilitate backward compatibility. */ |
c906108c | 1603 | |
883b9c6c | 1604 | static unsigned int remote_address_size; |
c906108c | 1605 | |
11cf8741 | 1606 | \f |
11cf8741 | 1607 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1608 | memory read/write packet. MIN (rsa->remote_packet_size, |
1609 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1610 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1611 | (speed up transfers). The variables ``preferred_*'' (the user |
1612 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1613 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1614 | |
1615 | struct memory_packet_config | |
1616 | { | |
a121b7c1 | 1617 | const char *name; |
11cf8741 JM |
1618 | long size; |
1619 | int fixed_p; | |
1620 | }; | |
1621 | ||
cc0be08f PA |
1622 | /* The default max memory-write-packet-size, when the setting is |
1623 | "fixed". The 16k is historical. (It came from older GDB's using | |
1624 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1625 | don't cope very well with large alloca calls.) */ | |
1626 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1627 | |
1628 | /* The minimum remote packet size for memory transfers. Ensures we | |
1629 | can write at least one byte. */ | |
1630 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1631 | ||
cc0be08f PA |
1632 | /* Get the memory packet size, assuming it is fixed. */ |
1633 | ||
1634 | static long | |
1635 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1636 | { | |
1637 | gdb_assert (config->fixed_p); | |
1638 | ||
1639 | if (config->size <= 0) | |
1640 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1641 | else | |
1642 | return config->size; | |
1643 | } | |
1644 | ||
11cf8741 JM |
1645 | /* Compute the current size of a read/write packet. Since this makes |
1646 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1647 | ||
6b8edb51 PA |
1648 | long |
1649 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 1650 | { |
d01949b6 | 1651 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1652 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1653 | |
11cf8741 JM |
1654 | long what_they_get; |
1655 | if (config->fixed_p) | |
cc0be08f | 1656 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1657 | else |
1658 | { | |
ea9c271d | 1659 | what_they_get = get_remote_packet_size (); |
23860348 | 1660 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1661 | if (config->size > 0 |
1662 | && what_they_get > config->size) | |
1663 | what_they_get = config->size; | |
be2a5f71 DJ |
1664 | |
1665 | /* Limit it to the size of the targets ``g'' response unless we have | |
1666 | permission from the stub to use a larger packet size. */ | |
1667 | if (rs->explicit_packet_size == 0 | |
1668 | && rsa->actual_register_packet_size > 0 | |
1669 | && what_they_get > rsa->actual_register_packet_size) | |
1670 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1671 | } |
a5c0808e PA |
1672 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1673 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1674 | |
1675 | /* Make sure there is room in the global buffer for this packet | |
1676 | (including its trailing NUL byte). */ | |
8d64371b TT |
1677 | if (rs->buf.size () < what_they_get + 1) |
1678 | rs->buf.resize (2 * what_they_get); | |
6d820c5c | 1679 | |
11cf8741 JM |
1680 | return what_they_get; |
1681 | } | |
1682 | ||
0df8b418 | 1683 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1684 | something really big then do a sanity check. */ |
11cf8741 JM |
1685 | |
1686 | static void | |
ac88e2de | 1687 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1688 | { |
1689 | int fixed_p = config->fixed_p; | |
1690 | long size = config->size; | |
a744cf53 | 1691 | |
11cf8741 | 1692 | if (args == NULL) |
8a3fe4f8 | 1693 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1694 | else if (strcmp (args, "hard") == 0 |
1695 | || strcmp (args, "fixed") == 0) | |
1696 | fixed_p = 1; | |
1697 | else if (strcmp (args, "soft") == 0 | |
1698 | || strcmp (args, "limit") == 0) | |
1699 | fixed_p = 0; | |
1700 | else | |
1701 | { | |
1702 | char *end; | |
a744cf53 | 1703 | |
11cf8741 JM |
1704 | size = strtoul (args, &end, 0); |
1705 | if (args == end) | |
8a3fe4f8 | 1706 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1707 | |
1708 | /* Instead of explicitly capping the size of a packet to or | |
1709 | disallowing it, the user is allowed to set the size to | |
1710 | something arbitrarily large. */ | |
11cf8741 | 1711 | } |
a5c0808e | 1712 | |
23860348 | 1713 | /* Extra checks? */ |
11cf8741 JM |
1714 | if (fixed_p && !config->fixed_p) |
1715 | { | |
cc0be08f PA |
1716 | /* So that the query shows the correct value. */ |
1717 | long query_size = (size <= 0 | |
1718 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
1719 | : size); | |
1720 | ||
e2e0b3e5 AC |
1721 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1722 | "of %ld bytes. Change the packet size? "), | |
cc0be08f | 1723 | config->name, query_size)) |
8a3fe4f8 | 1724 | error (_("Packet size not changed.")); |
11cf8741 | 1725 | } |
23860348 | 1726 | /* Update the config. */ |
11cf8741 JM |
1727 | config->fixed_p = fixed_p; |
1728 | config->size = size; | |
1729 | } | |
1730 | ||
1731 | static void | |
1732 | show_memory_packet_size (struct memory_packet_config *config) | |
1733 | { | |
cc0be08f PA |
1734 | if (config->size == 0) |
1735 | printf_filtered (_("The %s is 0 (default). "), config->name); | |
1736 | else | |
1737 | printf_filtered (_("The %s is %ld. "), config->name, config->size); | |
11cf8741 | 1738 | if (config->fixed_p) |
a3f17187 | 1739 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
cc0be08f | 1740 | get_fixed_memory_packet_size (config)); |
11cf8741 | 1741 | else |
cc0be08f | 1742 | { |
6b8edb51 | 1743 | remote_target *remote = get_current_remote_target (); |
cc0be08f | 1744 | |
6b8edb51 | 1745 | if (remote != NULL) |
cc0be08f | 1746 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
6b8edb51 | 1747 | remote->get_memory_packet_size (config)); |
cc0be08f PA |
1748 | else |
1749 | puts_filtered ("The actual limit will be further reduced " | |
1750 | "dependent on the target.\n"); | |
1751 | } | |
11cf8741 JM |
1752 | } |
1753 | ||
5b6d1e4f | 1754 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1755 | static struct memory_packet_config memory_write_packet_config = |
1756 | { | |
1757 | "memory-write-packet-size", | |
1758 | }; | |
1759 | ||
1760 | static void | |
ac88e2de | 1761 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1762 | { |
1763 | set_memory_packet_size (args, &memory_write_packet_config); | |
1764 | } | |
1765 | ||
1766 | static void | |
ac88e2de | 1767 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1768 | { |
1769 | show_memory_packet_size (&memory_write_packet_config); | |
1770 | } | |
1771 | ||
055303e2 AB |
1772 | /* Show the number of hardware watchpoints that can be used. */ |
1773 | ||
1774 | static void | |
1775 | show_hardware_watchpoint_limit (struct ui_file *file, int from_tty, | |
1776 | struct cmd_list_element *c, | |
1777 | const char *value) | |
1778 | { | |
1779 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1780 | "watchpoints is %s.\n"), value); | |
1781 | } | |
1782 | ||
1783 | /* Show the length limit (in bytes) for hardware watchpoints. */ | |
1784 | ||
1785 | static void | |
1786 | show_hardware_watchpoint_length_limit (struct ui_file *file, int from_tty, | |
1787 | struct cmd_list_element *c, | |
1788 | const char *value) | |
1789 | { | |
1790 | fprintf_filtered (file, _("The maximum length (in bytes) of a target " | |
1791 | "hardware watchpoint is %s.\n"), value); | |
1792 | } | |
1793 | ||
1794 | /* Show the number of hardware breakpoints that can be used. */ | |
1795 | ||
1796 | static void | |
1797 | show_hardware_breakpoint_limit (struct ui_file *file, int from_tty, | |
1798 | struct cmd_list_element *c, | |
1799 | const char *value) | |
1800 | { | |
1801 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1802 | "breakpoints is %s.\n"), value); | |
1803 | } | |
1804 | ||
6cc8564b LM |
1805 | /* Controls the maximum number of characters to display in the debug output |
1806 | for each remote packet. The remaining characters are omitted. */ | |
1807 | ||
1808 | static int remote_packet_max_chars = 512; | |
1809 | ||
1810 | /* Show the maximum number of characters to display for each remote packet | |
1811 | when remote debugging is enabled. */ | |
1812 | ||
1813 | static void | |
1814 | show_remote_packet_max_chars (struct ui_file *file, int from_tty, | |
1815 | struct cmd_list_element *c, | |
1816 | const char *value) | |
1817 | { | |
1818 | fprintf_filtered (file, _("Number of remote packet characters to " | |
1819 | "display is %s.\n"), value); | |
1820 | } | |
1821 | ||
6b8edb51 PA |
1822 | long |
1823 | remote_target::get_memory_write_packet_size () | |
11cf8741 JM |
1824 | { |
1825 | return get_memory_packet_size (&memory_write_packet_config); | |
1826 | } | |
1827 | ||
5b6d1e4f | 1828 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1829 | static struct memory_packet_config memory_read_packet_config = |
1830 | { | |
1831 | "memory-read-packet-size", | |
1832 | }; | |
1833 | ||
1834 | static void | |
ac88e2de | 1835 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1836 | { |
1837 | set_memory_packet_size (args, &memory_read_packet_config); | |
1838 | } | |
1839 | ||
1840 | static void | |
ac88e2de | 1841 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1842 | { |
1843 | show_memory_packet_size (&memory_read_packet_config); | |
1844 | } | |
1845 | ||
6b8edb51 PA |
1846 | long |
1847 | remote_target::get_memory_read_packet_size () | |
11cf8741 JM |
1848 | { |
1849 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1850 | |
11cf8741 JM |
1851 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1852 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1853 | increased beyond this. */ |
1854 | if (size > get_remote_packet_size ()) | |
1855 | size = get_remote_packet_size (); | |
11cf8741 JM |
1856 | return size; |
1857 | } | |
1858 | ||
11cf8741 | 1859 | \f |
5a2468f5 | 1860 | |
5a2468f5 JM |
1861 | struct packet_config |
1862 | { | |
bb572ddd DJ |
1863 | const char *name; |
1864 | const char *title; | |
4082afcc PA |
1865 | |
1866 | /* If auto, GDB auto-detects support for this packet or feature, | |
1867 | either through qSupported, or by trying the packet and looking | |
1868 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1869 | packet. If false, the packet is disabled. Configs that don't |
1870 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1871 | enum auto_boolean detect; |
4082afcc PA |
1872 | |
1873 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1874 | enum packet_support support; |
1875 | }; | |
1876 | ||
4082afcc PA |
1877 | static enum packet_support packet_config_support (struct packet_config *config); |
1878 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1879 | |
1880 | static void | |
fba45db2 | 1881 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1882 | { |
a121b7c1 | 1883 | const char *support = "internal-error"; |
a744cf53 | 1884 | |
4082afcc | 1885 | switch (packet_config_support (config)) |
5a2468f5 JM |
1886 | { |
1887 | case PACKET_ENABLE: | |
1888 | support = "enabled"; | |
1889 | break; | |
1890 | case PACKET_DISABLE: | |
1891 | support = "disabled"; | |
1892 | break; | |
1893 | case PACKET_SUPPORT_UNKNOWN: | |
1894 | support = "unknown"; | |
1895 | break; | |
1896 | } | |
1897 | switch (config->detect) | |
1898 | { | |
7f19b9a2 | 1899 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1900 | printf_filtered (_("Support for the `%s' packet " |
1901 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1902 | config->name, support); |
5a2468f5 | 1903 | break; |
7f19b9a2 AC |
1904 | case AUTO_BOOLEAN_TRUE: |
1905 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1906 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1907 | config->name, support); | |
8e248173 | 1908 | break; |
5a2468f5 JM |
1909 | } |
1910 | } | |
1911 | ||
1912 | static void | |
bb572ddd DJ |
1913 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1914 | const char *title, int legacy) | |
d471ea57 | 1915 | { |
5a2468f5 JM |
1916 | char *set_doc; |
1917 | char *show_doc; | |
d471ea57 | 1918 | char *cmd_name; |
3ed07be4 | 1919 | |
5a2468f5 JM |
1920 | config->name = name; |
1921 | config->title = title; | |
590042fc | 1922 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet.", |
b435e160 | 1923 | name, title); |
3e43a32a | 1924 | show_doc = xstrprintf ("Show current use of remote " |
590042fc | 1925 | "protocol `%s' (%s) packet.", |
b435e160 | 1926 | name, title); |
d471ea57 | 1927 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1928 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1929 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1930 | &config->detect, set_doc, |
1931 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1932 | NULL, |
bb572ddd DJ |
1933 | show_remote_protocol_packet_cmd, |
1934 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1935 | /* The command code copies the documentation strings. */ |
1936 | xfree (set_doc); | |
1937 | xfree (show_doc); | |
23860348 | 1938 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1939 | if (legacy) |
1940 | { | |
1941 | char *legacy_name; | |
a744cf53 | 1942 | |
b435e160 | 1943 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1944 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1945 | &remote_set_cmdlist); |
d471ea57 | 1946 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1947 | &remote_show_cmdlist); |
d471ea57 | 1948 | } |
5a2468f5 JM |
1949 | } |
1950 | ||
d471ea57 | 1951 | static enum packet_result |
a76d924d | 1952 | packet_check_result (const char *buf) |
5a2468f5 | 1953 | { |
d471ea57 | 1954 | if (buf[0] != '\0') |
5a2468f5 | 1955 | { |
d471ea57 | 1956 | /* The stub recognized the packet request. Check that the |
23860348 | 1957 | operation succeeded. */ |
a76d924d DJ |
1958 | if (buf[0] == 'E' |
1959 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1960 | && buf[3] == '\0') | |
85102364 | 1961 | /* "Enn" - definitely an error. */ |
a76d924d DJ |
1962 | return PACKET_ERROR; |
1963 | ||
1964 | /* Always treat "E." as an error. This will be used for | |
1965 | more verbose error messages, such as E.memtypes. */ | |
1966 | if (buf[0] == 'E' && buf[1] == '.') | |
1967 | return PACKET_ERROR; | |
1968 | ||
1969 | /* The packet may or may not be OK. Just assume it is. */ | |
1970 | return PACKET_OK; | |
1971 | } | |
1972 | else | |
1973 | /* The stub does not support the packet. */ | |
1974 | return PACKET_UNKNOWN; | |
1975 | } | |
1976 | ||
8d64371b TT |
1977 | static enum packet_result |
1978 | packet_check_result (const gdb::char_vector &buf) | |
1979 | { | |
1980 | return packet_check_result (buf.data ()); | |
1981 | } | |
1982 | ||
a76d924d DJ |
1983 | static enum packet_result |
1984 | packet_ok (const char *buf, struct packet_config *config) | |
1985 | { | |
1986 | enum packet_result result; | |
1987 | ||
4082afcc PA |
1988 | if (config->detect != AUTO_BOOLEAN_TRUE |
1989 | && config->support == PACKET_DISABLE) | |
1990 | internal_error (__FILE__, __LINE__, | |
1991 | _("packet_ok: attempt to use a disabled packet")); | |
1992 | ||
a76d924d DJ |
1993 | result = packet_check_result (buf); |
1994 | switch (result) | |
1995 | { | |
1996 | case PACKET_OK: | |
1997 | case PACKET_ERROR: | |
1998 | /* The stub recognized the packet request. */ | |
4082afcc | 1999 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 2000 | { |
2189c312 SM |
2001 | remote_debug_printf ("Packet %s (%s) is supported", |
2002 | config->name, config->title); | |
d471ea57 | 2003 | config->support = PACKET_ENABLE; |
d471ea57 | 2004 | } |
a76d924d DJ |
2005 | break; |
2006 | case PACKET_UNKNOWN: | |
23860348 | 2007 | /* The stub does not support the packet. */ |
4082afcc PA |
2008 | if (config->detect == AUTO_BOOLEAN_AUTO |
2009 | && config->support == PACKET_ENABLE) | |
d471ea57 | 2010 | { |
4082afcc PA |
2011 | /* If the stub previously indicated that the packet was |
2012 | supported then there is a protocol error. */ | |
2013 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
2014 | config->name, config->title); | |
2015 | } | |
2016 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
2017 | { | |
2018 | /* The user set it wrong. */ | |
2019 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
2020 | config->name, config->title); | |
d471ea57 | 2021 | } |
4082afcc | 2022 | |
2189c312 SM |
2023 | remote_debug_printf ("Packet %s (%s) is NOT supported", |
2024 | config->name, config->title); | |
4082afcc | 2025 | config->support = PACKET_DISABLE; |
a76d924d | 2026 | break; |
5a2468f5 | 2027 | } |
a76d924d DJ |
2028 | |
2029 | return result; | |
5a2468f5 JM |
2030 | } |
2031 | ||
8d64371b TT |
2032 | static enum packet_result |
2033 | packet_ok (const gdb::char_vector &buf, struct packet_config *config) | |
2034 | { | |
2035 | return packet_ok (buf.data (), config); | |
2036 | } | |
2037 | ||
444abaca DJ |
2038 | enum { |
2039 | PACKET_vCont = 0, | |
2040 | PACKET_X, | |
2041 | PACKET_qSymbol, | |
2042 | PACKET_P, | |
2043 | PACKET_p, | |
2044 | PACKET_Z0, | |
2045 | PACKET_Z1, | |
2046 | PACKET_Z2, | |
2047 | PACKET_Z3, | |
2048 | PACKET_Z4, | |
15a201c8 | 2049 | PACKET_vFile_setfs, |
a6b151f1 DJ |
2050 | PACKET_vFile_open, |
2051 | PACKET_vFile_pread, | |
2052 | PACKET_vFile_pwrite, | |
2053 | PACKET_vFile_close, | |
2054 | PACKET_vFile_unlink, | |
b9e7b9c3 | 2055 | PACKET_vFile_readlink, |
0a93529c | 2056 | PACKET_vFile_fstat, |
0876f84a | 2057 | PACKET_qXfer_auxv, |
23181151 | 2058 | PACKET_qXfer_features, |
c78fa86a | 2059 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 2060 | PACKET_qXfer_libraries, |
2268b414 | 2061 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 2062 | PACKET_qXfer_memory_map, |
07e059b5 | 2063 | PACKET_qXfer_osdata, |
dc146f7c | 2064 | PACKET_qXfer_threads, |
0fb4aa4b | 2065 | PACKET_qXfer_statictrace_read, |
b3b9301e | 2066 | PACKET_qXfer_traceframe_info, |
169081d0 | 2067 | PACKET_qXfer_uib, |
711e434b | 2068 | PACKET_qGetTIBAddr, |
444abaca | 2069 | PACKET_qGetTLSAddr, |
be2a5f71 | 2070 | PACKET_qSupported, |
bd3eecc3 | 2071 | PACKET_qTStatus, |
89be2091 | 2072 | PACKET_QPassSignals, |
82075af2 | 2073 | PACKET_QCatchSyscalls, |
9b224c5e | 2074 | PACKET_QProgramSignals, |
bc3b087d | 2075 | PACKET_QSetWorkingDir, |
aefd8b33 | 2076 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
2077 | PACKET_QEnvironmentHexEncoded, |
2078 | PACKET_QEnvironmentReset, | |
2079 | PACKET_QEnvironmentUnset, | |
936d2992 | 2080 | PACKET_qCRC, |
08388c79 | 2081 | PACKET_qSearch_memory, |
2d717e4f DJ |
2082 | PACKET_vAttach, |
2083 | PACKET_vRun, | |
a6f3e723 | 2084 | PACKET_QStartNoAckMode, |
82f73884 | 2085 | PACKET_vKill, |
4aa995e1 PA |
2086 | PACKET_qXfer_siginfo_read, |
2087 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 2088 | PACKET_qAttached, |
4082afcc PA |
2089 | |
2090 | /* Support for conditional tracepoints. */ | |
782b2b07 | 2091 | PACKET_ConditionalTracepoints, |
4082afcc PA |
2092 | |
2093 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 2094 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
2095 | |
2096 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 2097 | PACKET_BreakpointCommands, |
4082afcc PA |
2098 | |
2099 | /* Support for fast tracepoints. */ | |
7a697b8d | 2100 | PACKET_FastTracepoints, |
4082afcc PA |
2101 | |
2102 | /* Support for static tracepoints. */ | |
0fb4aa4b | 2103 | PACKET_StaticTracepoints, |
4082afcc PA |
2104 | |
2105 | /* Support for installing tracepoints while a trace experiment is | |
2106 | running. */ | |
1e4d1764 | 2107 | PACKET_InstallInTrace, |
4082afcc | 2108 | |
40ab02ce MS |
2109 | PACKET_bc, |
2110 | PACKET_bs, | |
409873ef | 2111 | PACKET_TracepointSource, |
d914c394 | 2112 | PACKET_QAllow, |
78d85199 | 2113 | PACKET_qXfer_fdpic, |
03583c20 | 2114 | PACKET_QDisableRandomization, |
d1feda86 | 2115 | PACKET_QAgent, |
f6f899bf | 2116 | PACKET_QTBuffer_size, |
9accd112 MM |
2117 | PACKET_Qbtrace_off, |
2118 | PACKET_Qbtrace_bts, | |
b20a6524 | 2119 | PACKET_Qbtrace_pt, |
9accd112 | 2120 | PACKET_qXfer_btrace, |
4082afcc PA |
2121 | |
2122 | /* Support for the QNonStop packet. */ | |
2123 | PACKET_QNonStop, | |
2124 | ||
65706a29 PA |
2125 | /* Support for the QThreadEvents packet. */ |
2126 | PACKET_QThreadEvents, | |
2127 | ||
4082afcc PA |
2128 | /* Support for multi-process extensions. */ |
2129 | PACKET_multiprocess_feature, | |
2130 | ||
2131 | /* Support for enabling and disabling tracepoints while a trace | |
2132 | experiment is running. */ | |
2133 | PACKET_EnableDisableTracepoints_feature, | |
2134 | ||
2135 | /* Support for collecting strings using the tracenz bytecode. */ | |
2136 | PACKET_tracenz_feature, | |
2137 | ||
2138 | /* Support for continuing to run a trace experiment while GDB is | |
2139 | disconnected. */ | |
2140 | PACKET_DisconnectedTracing_feature, | |
2141 | ||
2142 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
2143 | PACKET_augmented_libraries_svr4_read_feature, | |
2144 | ||
f4abbc16 MM |
2145 | /* Support for the qXfer:btrace-conf:read packet. */ |
2146 | PACKET_qXfer_btrace_conf, | |
2147 | ||
d33501a5 MM |
2148 | /* Support for the Qbtrace-conf:bts:size packet. */ |
2149 | PACKET_Qbtrace_conf_bts_size, | |
2150 | ||
f7e6eed5 PA |
2151 | /* Support for swbreak+ feature. */ |
2152 | PACKET_swbreak_feature, | |
2153 | ||
2154 | /* Support for hwbreak+ feature. */ | |
2155 | PACKET_hwbreak_feature, | |
2156 | ||
89245bc0 DB |
2157 | /* Support for fork events. */ |
2158 | PACKET_fork_event_feature, | |
2159 | ||
2160 | /* Support for vfork events. */ | |
2161 | PACKET_vfork_event_feature, | |
2162 | ||
b20a6524 MM |
2163 | /* Support for the Qbtrace-conf:pt:size packet. */ |
2164 | PACKET_Qbtrace_conf_pt_size, | |
2165 | ||
94585166 DB |
2166 | /* Support for exec events. */ |
2167 | PACKET_exec_event_feature, | |
2168 | ||
750ce8d1 YQ |
2169 | /* Support for query supported vCont actions. */ |
2170 | PACKET_vContSupported, | |
2171 | ||
de979965 PA |
2172 | /* Support remote CTRL-C. */ |
2173 | PACKET_vCtrlC, | |
2174 | ||
f2faf941 PA |
2175 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
2176 | PACKET_no_resumed, | |
2177 | ||
2c2e7f87 LM |
2178 | /* Support for memory tagging, allocation tag fetch/store |
2179 | packets and the tag violation stop replies. */ | |
2180 | PACKET_memory_tagging_feature, | |
2181 | ||
444abaca DJ |
2182 | PACKET_MAX |
2183 | }; | |
506fb367 | 2184 | |
5b6d1e4f PA |
2185 | /* FIXME: needs to be per-remote-target. Ignoring this for now, |
2186 | assuming all remote targets are the same server (thus all support | |
2187 | the same packets). */ | |
444abaca | 2188 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 2189 | |
f7e6eed5 PA |
2190 | /* Returns the packet's corresponding "set remote foo-packet" command |
2191 | state. See struct packet_config for more details. */ | |
2192 | ||
2193 | static enum auto_boolean | |
2194 | packet_set_cmd_state (int packet) | |
2195 | { | |
2196 | return remote_protocol_packets[packet].detect; | |
2197 | } | |
2198 | ||
4082afcc PA |
2199 | /* Returns whether a given packet or feature is supported. This takes |
2200 | into account the state of the corresponding "set remote foo-packet" | |
2201 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2202 | |
4082afcc PA |
2203 | static enum packet_support |
2204 | packet_config_support (struct packet_config *config) | |
2205 | { | |
2206 | switch (config->detect) | |
444abaca | 2207 | { |
4082afcc PA |
2208 | case AUTO_BOOLEAN_TRUE: |
2209 | return PACKET_ENABLE; | |
2210 | case AUTO_BOOLEAN_FALSE: | |
2211 | return PACKET_DISABLE; | |
2212 | case AUTO_BOOLEAN_AUTO: | |
2213 | return config->support; | |
2214 | default: | |
2215 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 2216 | } |
4082afcc PA |
2217 | } |
2218 | ||
2219 | /* Same as packet_config_support, but takes the packet's enum value as | |
2220 | argument. */ | |
2221 | ||
2222 | static enum packet_support | |
2223 | packet_support (int packet) | |
2224 | { | |
2225 | struct packet_config *config = &remote_protocol_packets[packet]; | |
2226 | ||
2227 | return packet_config_support (config); | |
dc8acb97 MS |
2228 | } |
2229 | ||
5a2468f5 | 2230 | static void |
444abaca DJ |
2231 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2232 | struct cmd_list_element *c, | |
2233 | const char *value) | |
5a2468f5 | 2234 | { |
444abaca | 2235 | struct packet_config *packet; |
5a2468f5 | 2236 | |
444abaca DJ |
2237 | for (packet = remote_protocol_packets; |
2238 | packet < &remote_protocol_packets[PACKET_MAX]; | |
2239 | packet++) | |
2240 | { | |
2241 | if (&packet->detect == c->var) | |
2242 | { | |
2243 | show_packet_config_cmd (packet); | |
2244 | return; | |
2245 | } | |
2246 | } | |
9b20d036 | 2247 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 2248 | c->name); |
5a2468f5 JM |
2249 | } |
2250 | ||
d471ea57 AC |
2251 | /* Should we try one of the 'Z' requests? */ |
2252 | ||
2253 | enum Z_packet_type | |
2254 | { | |
2255 | Z_PACKET_SOFTWARE_BP, | |
2256 | Z_PACKET_HARDWARE_BP, | |
2257 | Z_PACKET_WRITE_WP, | |
2258 | Z_PACKET_READ_WP, | |
2259 | Z_PACKET_ACCESS_WP, | |
2260 | NR_Z_PACKET_TYPES | |
2261 | }; | |
96baa820 | 2262 | |
d471ea57 | 2263 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2264 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2265 | |
7f19b9a2 | 2266 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2267 | |
2268 | static void | |
eb4c3f4a | 2269 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2270 | struct cmd_list_element *c) |
96baa820 | 2271 | { |
d471ea57 | 2272 | int i; |
a744cf53 | 2273 | |
d471ea57 | 2274 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 2275 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
2276 | } |
2277 | ||
2278 | static void | |
08546159 AC |
2279 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2280 | struct cmd_list_element *c, | |
2281 | const char *value) | |
96baa820 | 2282 | { |
d471ea57 | 2283 | int i; |
a744cf53 | 2284 | |
d471ea57 AC |
2285 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2286 | { | |
444abaca | 2287 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 2288 | } |
96baa820 JM |
2289 | } |
2290 | ||
4082afcc PA |
2291 | /* Returns true if the multi-process extensions are in effect. */ |
2292 | ||
2293 | static int | |
2294 | remote_multi_process_p (struct remote_state *rs) | |
2295 | { | |
2296 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
2297 | } | |
2298 | ||
de0d863e DB |
2299 | /* Returns true if fork events are supported. */ |
2300 | ||
2301 | static int | |
2302 | remote_fork_event_p (struct remote_state *rs) | |
2303 | { | |
2304 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
2305 | } | |
2306 | ||
c269dbdb DB |
2307 | /* Returns true if vfork events are supported. */ |
2308 | ||
2309 | static int | |
2310 | remote_vfork_event_p (struct remote_state *rs) | |
2311 | { | |
2312 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
2313 | } | |
2314 | ||
d46addbb DB |
2315 | /* Returns true if exec events are supported. */ |
2316 | ||
2317 | static int | |
2318 | remote_exec_event_p (struct remote_state *rs) | |
2319 | { | |
2320 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
2321 | } | |
2322 | ||
2c2e7f87 LM |
2323 | /* Returns true if memory tagging is supported, false otherwise. */ |
2324 | ||
2325 | static bool | |
2326 | remote_memory_tagging_p () | |
2327 | { | |
2328 | return packet_support (PACKET_memory_tagging_feature) == PACKET_ENABLE; | |
2329 | } | |
2330 | ||
cbb8991c DB |
2331 | /* Insert fork catchpoint target routine. If fork events are enabled |
2332 | then return success, nothing more to do. */ | |
2333 | ||
f6ac5f3d PA |
2334 | int |
2335 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
2336 | { |
2337 | struct remote_state *rs = get_remote_state (); | |
2338 | ||
2339 | return !remote_fork_event_p (rs); | |
2340 | } | |
2341 | ||
2342 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2343 | return success. */ | |
2344 | ||
f6ac5f3d PA |
2345 | int |
2346 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2347 | { |
2348 | return 0; | |
2349 | } | |
2350 | ||
2351 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2352 | then return success, nothing more to do. */ | |
2353 | ||
f6ac5f3d PA |
2354 | int |
2355 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
2356 | { |
2357 | struct remote_state *rs = get_remote_state (); | |
2358 | ||
2359 | return !remote_vfork_event_p (rs); | |
2360 | } | |
2361 | ||
2362 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2363 | return success. */ | |
2364 | ||
f6ac5f3d PA |
2365 | int |
2366 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2367 | { |
2368 | return 0; | |
2369 | } | |
2370 | ||
d46addbb DB |
2371 | /* Insert exec catchpoint target routine. If exec events are |
2372 | enabled, just return success. */ | |
2373 | ||
f6ac5f3d PA |
2374 | int |
2375 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
2376 | { |
2377 | struct remote_state *rs = get_remote_state (); | |
2378 | ||
2379 | return !remote_exec_event_p (rs); | |
2380 | } | |
2381 | ||
2382 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2383 | return success. */ | |
2384 | ||
f6ac5f3d PA |
2385 | int |
2386 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2387 | { |
2388 | return 0; | |
2389 | } | |
2390 | ||
c906108c SS |
2391 | \f |
2392 | ||
ffdd69cf TT |
2393 | /* Take advantage of the fact that the TID field is not used, to tag |
2394 | special ptids with it set to != 0. */ | |
2395 | static const ptid_t magic_null_ptid (42000, -1, 1); | |
2396 | static const ptid_t not_sent_ptid (42000, -2, 1); | |
2397 | static const ptid_t any_thread_ptid (42000, 0, 1); | |
79d7f229 | 2398 | |
0b16c5cf PA |
2399 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2400 | detach instead of killing it when bailing out). */ | |
2401 | ||
6b8edb51 PA |
2402 | int |
2403 | remote_target::remote_query_attached (int pid) | |
0b16c5cf PA |
2404 | { |
2405 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2406 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2407 | |
4082afcc | 2408 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2409 | return 0; |
2410 | ||
2411 | if (remote_multi_process_p (rs)) | |
8d64371b | 2412 | xsnprintf (rs->buf.data (), size, "qAttached:%x", pid); |
0b16c5cf | 2413 | else |
8d64371b | 2414 | xsnprintf (rs->buf.data (), size, "qAttached"); |
0b16c5cf PA |
2415 | |
2416 | putpkt (rs->buf); | |
8d64371b | 2417 | getpkt (&rs->buf, 0); |
0b16c5cf PA |
2418 | |
2419 | switch (packet_ok (rs->buf, | |
1554e9be | 2420 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
2421 | { |
2422 | case PACKET_OK: | |
8d64371b | 2423 | if (strcmp (rs->buf.data (), "1") == 0) |
0b16c5cf PA |
2424 | return 1; |
2425 | break; | |
2426 | case PACKET_ERROR: | |
8d64371b | 2427 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
0b16c5cf PA |
2428 | break; |
2429 | case PACKET_UNKNOWN: | |
2430 | break; | |
2431 | } | |
2432 | ||
2433 | return 0; | |
2434 | } | |
2435 | ||
49c62f2e PA |
2436 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2437 | has been invented by GDB, instead of reported by the target. Since | |
2438 | we can be connected to a remote system before before knowing about | |
2439 | any inferior, mark the target with execution when we find the first | |
2440 | inferior. If ATTACHED is 1, then we had just attached to this | |
2441 | inferior. If it is 0, then we just created this inferior. If it | |
2442 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2443 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2444 | attempt to open this inferior's executable as the main executable | |
2445 | if no main executable is open already. */ | |
1941c569 | 2446 | |
6b8edb51 | 2447 | inferior * |
9ab8741a | 2448 | remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 | 2449 | int try_open_exec) |
1941c569 | 2450 | { |
1941c569 PA |
2451 | struct inferior *inf; |
2452 | ||
0b16c5cf PA |
2453 | /* Check whether this process we're learning about is to be |
2454 | considered attached, or if is to be considered to have been | |
2455 | spawned by the stub. */ | |
2456 | if (attached == -1) | |
2457 | attached = remote_query_attached (pid); | |
2458 | ||
f5656ead | 2459 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2460 | { |
2461 | /* If the target shares code across all inferiors, then every | |
2462 | attach adds a new inferior. */ | |
2463 | inf = add_inferior (pid); | |
2464 | ||
2465 | /* ... and every inferior is bound to the same program space. | |
2466 | However, each inferior may still have its own address | |
2467 | space. */ | |
2468 | inf->aspace = maybe_new_address_space (); | |
2469 | inf->pspace = current_program_space; | |
2470 | } | |
2471 | else | |
2472 | { | |
2473 | /* In the traditional debugging scenario, there's a 1-1 match | |
2474 | between program/address spaces. We simply bind the inferior | |
2475 | to the program space's address space. */ | |
2476 | inf = current_inferior (); | |
78f2c40a PA |
2477 | |
2478 | /* However, if the current inferior is already bound to a | |
2479 | process, find some other empty inferior. */ | |
2480 | if (inf->pid != 0) | |
2481 | { | |
2482 | inf = nullptr; | |
2483 | for (inferior *it : all_inferiors ()) | |
2484 | if (it->pid == 0) | |
2485 | { | |
2486 | inf = it; | |
2487 | break; | |
2488 | } | |
2489 | } | |
2490 | if (inf == nullptr) | |
2491 | { | |
2492 | /* Since all inferiors were already bound to a process, add | |
2493 | a new inferior. */ | |
2494 | inf = add_inferior_with_spaces (); | |
2495 | } | |
2496 | switch_to_inferior_no_thread (inf); | |
02980c56 | 2497 | inf->push_target (this); |
6c95b8df PA |
2498 | inferior_appeared (inf, pid); |
2499 | } | |
1941c569 | 2500 | |
0b16c5cf | 2501 | inf->attach_flag = attached; |
49c62f2e | 2502 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2503 | |
1b6e6f5c GB |
2504 | /* If no main executable is currently open then attempt to |
2505 | open the file that was executed to create this inferior. */ | |
835205d0 | 2506 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2507 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2508 | |
a2fedca9 PW |
2509 | /* Check for exec file mismatch, and let the user solve it. */ |
2510 | validate_exec_file (1); | |
2511 | ||
1941c569 PA |
2512 | return inf; |
2513 | } | |
2514 | ||
7aabaf9d | 2515 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
5b6d1e4f PA |
2516 | static remote_thread_info *get_remote_thread_info (remote_target *target, |
2517 | ptid_t ptid); | |
85ad3aaf | 2518 | |
1941c569 PA |
2519 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
2520 | according to RUNNING. */ | |
2521 | ||
00431a78 | 2522 | thread_info * |
6b8edb51 | 2523 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing) |
c906108c | 2524 | { |
b7ea362b | 2525 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2526 | struct thread_info *thread; |
b7ea362b PA |
2527 | |
2528 | /* GDB historically didn't pull threads in the initial connection | |
2529 | setup. If the remote target doesn't even have a concept of | |
2530 | threads (e.g., a bare-metal target), even if internally we | |
2531 | consider that a single-threaded target, mentioning a new thread | |
2532 | might be confusing to the user. Be silent then, preserving the | |
2533 | age old behavior. */ | |
2534 | if (rs->starting_up) | |
5b6d1e4f | 2535 | thread = add_thread_silent (this, ptid); |
b7ea362b | 2536 | else |
5b6d1e4f | 2537 | thread = add_thread (this, ptid); |
1941c569 | 2538 | |
c9d22089 SM |
2539 | /* We start by assuming threads are resumed. That state then gets updated |
2540 | when we process a matching stop reply. */ | |
2541 | get_remote_thread_info (thread)->set_resumed (); | |
2542 | ||
5b6d1e4f PA |
2543 | set_executing (this, ptid, executing); |
2544 | set_running (this, ptid, running); | |
00431a78 PA |
2545 | |
2546 | return thread; | |
1941c569 PA |
2547 | } |
2548 | ||
2549 | /* Come here when we learn about a thread id from the remote target. | |
2550 | It may be the first time we hear about such thread, so take the | |
2551 | opportunity to add it to GDB's thread list. In case this is the | |
2552 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2553 | GDB's inferior list as well. EXECUTING indicates whether the |
2554 | thread is (internally) executing or stopped. */ | |
1941c569 | 2555 | |
6b8edb51 PA |
2556 | void |
2557 | remote_target::remote_notice_new_inferior (ptid_t currthread, int executing) | |
1941c569 | 2558 | { |
0d5b594f PA |
2559 | /* In non-stop mode, we assume new found threads are (externally) |
2560 | running until proven otherwise with a stop reply. In all-stop, | |
2561 | we can only get here if all threads are stopped. */ | |
2562 | int running = target_is_non_stop_p () ? 1 : 0; | |
2563 | ||
c906108c SS |
2564 | /* If this is a new thread, add it to GDB's thread list. |
2565 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 | 2566 | |
5b6d1e4f | 2567 | thread_info *tp = find_thread_ptid (this, currthread); |
00431a78 | 2568 | if (tp != NULL && tp->state == THREAD_EXITED) |
82f73884 PA |
2569 | { |
2570 | /* We're seeing an event on a thread id we knew had exited. | |
2571 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 2572 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
2573 | return; |
2574 | } | |
2575 | ||
5b6d1e4f | 2576 | if (!in_thread_list (this, currthread)) |
c0a2216e | 2577 | { |
1941c569 | 2578 | struct inferior *inf = NULL; |
e99b03dc | 2579 | int pid = currthread.pid (); |
1941c569 | 2580 | |
0e998d96 | 2581 | if (inferior_ptid.is_pid () |
e99b03dc | 2582 | && pid == inferior_ptid.pid ()) |
c0a2216e PA |
2583 | { |
2584 | /* inferior_ptid has no thread member yet. This can happen | |
2585 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2586 | stub doesn't support qC. This is the first stop reported | |
2587 | after an attach, so this is the main thread. Update the | |
2588 | ptid in the thread list. */ | |
5b6d1e4f PA |
2589 | if (in_thread_list (this, ptid_t (pid))) |
2590 | thread_change_ptid (this, inferior_ptid, currthread); | |
bad34192 PA |
2591 | else |
2592 | { | |
0ac55310 PA |
2593 | thread_info *thr |
2594 | = remote_add_thread (currthread, running, executing); | |
2595 | switch_to_thread (thr); | |
bad34192 | 2596 | } |
dc146f7c | 2597 | return; |
c0a2216e | 2598 | } |
82f73884 | 2599 | |
d7e15655 | 2600 | if (magic_null_ptid == inferior_ptid) |
c0a2216e PA |
2601 | { |
2602 | /* inferior_ptid is not set yet. This can happen with the | |
2603 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2604 | doesn't support qC. This is the first stop reported | |
2605 | after an attach, so this is the main thread. Update the | |
2606 | ptid in the thread list. */ | |
5b6d1e4f | 2607 | thread_change_ptid (this, inferior_ptid, currthread); |
82f73884 | 2608 | return; |
c0a2216e | 2609 | } |
82f73884 | 2610 | |
29c87f7f PA |
2611 | /* When connecting to a target remote, or to a target |
2612 | extended-remote which already was debugging an inferior, we | |
2613 | may not know about it yet. Add it before adding its child | |
2614 | thread, so notifications are emitted in a sensible order. */ | |
5b6d1e4f | 2615 | if (find_inferior_pid (this, currthread.pid ()) == NULL) |
49c62f2e PA |
2616 | { |
2617 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 2618 | bool fake_pid_p = !remote_multi_process_p (rs); |
49c62f2e PA |
2619 | |
2620 | inf = remote_add_inferior (fake_pid_p, | |
e99b03dc | 2621 | currthread.pid (), -1, 1); |
49c62f2e | 2622 | } |
29c87f7f | 2623 | |
82f73884 | 2624 | /* This is really a new thread. Add it. */ |
00431a78 PA |
2625 | thread_info *new_thr |
2626 | = remote_add_thread (currthread, running, executing); | |
1941c569 PA |
2627 | |
2628 | /* If we found a new inferior, let the common code do whatever | |
2629 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2630 | breakpoints), unless we're just setting up an all-stop |
2631 | connection. */ | |
1941c569 | 2632 | if (inf != NULL) |
b7ea362b PA |
2633 | { |
2634 | struct remote_state *rs = get_remote_state (); | |
2635 | ||
6efcd9a8 | 2636 | if (!rs->starting_up) |
00431a78 | 2637 | notice_new_inferior (new_thr, executing, 0); |
b7ea362b | 2638 | } |
c0a2216e | 2639 | } |
c906108c SS |
2640 | } |
2641 | ||
85ad3aaf | 2642 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2643 | |
7aabaf9d SM |
2644 | static remote_thread_info * |
2645 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2646 | { |
85ad3aaf | 2647 | gdb_assert (thread != NULL); |
dc146f7c | 2648 | |
85ad3aaf | 2649 | if (thread->priv == NULL) |
7aabaf9d | 2650 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2651 | |
7aabaf9d | 2652 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2653 | } |
2654 | ||
5b6d1e4f PA |
2655 | /* Return PTID's private thread data, creating it if necessary. */ |
2656 | ||
7aabaf9d | 2657 | static remote_thread_info * |
5b6d1e4f | 2658 | get_remote_thread_info (remote_target *target, ptid_t ptid) |
85ad3aaf | 2659 | { |
5b6d1e4f | 2660 | thread_info *thr = find_thread_ptid (target, ptid); |
00431a78 | 2661 | return get_remote_thread_info (thr); |
dc146f7c VP |
2662 | } |
2663 | ||
74531fed PA |
2664 | /* Call this function as a result of |
2665 | 1) A halt indication (T packet) containing a thread id | |
2666 | 2) A direct query of currthread | |
0df8b418 | 2667 | 3) Successful execution of set thread */ |
74531fed PA |
2668 | |
2669 | static void | |
47f8a51d | 2670 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2671 | { |
47f8a51d | 2672 | rs->general_thread = currthread; |
74531fed PA |
2673 | } |
2674 | ||
89be2091 DJ |
2675 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2676 | it can simply pass through to the inferior without reporting. */ | |
2677 | ||
f6ac5f3d | 2678 | void |
adc6a863 | 2679 | remote_target::pass_signals (gdb::array_view<const unsigned char> pass_signals) |
89be2091 | 2680 | { |
4082afcc | 2681 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2682 | { |
2683 | char *pass_packet, *p; | |
adc6a863 | 2684 | int count = 0; |
747dc59d | 2685 | struct remote_state *rs = get_remote_state (); |
89be2091 | 2686 | |
adc6a863 PA |
2687 | gdb_assert (pass_signals.size () < 256); |
2688 | for (size_t i = 0; i < pass_signals.size (); i++) | |
89be2091 | 2689 | { |
2455069d | 2690 | if (pass_signals[i]) |
89be2091 DJ |
2691 | count++; |
2692 | } | |
224c3ddb | 2693 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2694 | strcpy (pass_packet, "QPassSignals:"); |
2695 | p = pass_packet + strlen (pass_packet); | |
adc6a863 | 2696 | for (size_t i = 0; i < pass_signals.size (); i++) |
89be2091 | 2697 | { |
2455069d | 2698 | if (pass_signals[i]) |
89be2091 DJ |
2699 | { |
2700 | if (i >= 16) | |
2701 | *p++ = tohex (i >> 4); | |
2702 | *p++ = tohex (i & 15); | |
2703 | if (count) | |
2704 | *p++ = ';'; | |
2705 | else | |
2706 | break; | |
2707 | count--; | |
2708 | } | |
2709 | } | |
2710 | *p = 0; | |
747dc59d | 2711 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2712 | { |
89be2091 | 2713 | putpkt (pass_packet); |
8d64371b | 2714 | getpkt (&rs->buf, 0); |
8dc5b319 | 2715 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
84d53fa9 | 2716 | xfree (rs->last_pass_packet); |
747dc59d | 2717 | rs->last_pass_packet = pass_packet; |
89be2091 DJ |
2718 | } |
2719 | else | |
2720 | xfree (pass_packet); | |
2721 | } | |
2722 | } | |
2723 | ||
82075af2 JS |
2724 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2725 | to report syscalls to GDB. */ | |
2726 | ||
f6ac5f3d PA |
2727 | int |
2728 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2729 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2730 | { |
b80406ac | 2731 | const char *catch_packet; |
82075af2 JS |
2732 | enum packet_result result; |
2733 | int n_sysno = 0; | |
2734 | ||
2735 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2736 | { | |
2737 | /* Not supported. */ | |
2738 | return 1; | |
2739 | } | |
2740 | ||
649a140c | 2741 | if (needed && any_count == 0) |
82075af2 | 2742 | { |
649a140c PA |
2743 | /* Count how many syscalls are to be caught. */ |
2744 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2745 | { |
649a140c | 2746 | if (syscall_counts[i] != 0) |
82075af2 JS |
2747 | n_sysno++; |
2748 | } | |
2749 | } | |
2750 | ||
2189c312 SM |
2751 | remote_debug_printf ("pid %d needed %d any_count %d n_sysno %d", |
2752 | pid, needed, any_count, n_sysno); | |
82075af2 | 2753 | |
1b81856f | 2754 | std::string built_packet; |
82075af2 JS |
2755 | if (needed) |
2756 | { | |
2757 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2758 | characters for a sysno. If the resulting packet size is too | |
2759 | big, fallback on the non-selective packet. */ | |
2760 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2761 | built_packet.reserve (maxpktsz); |
2762 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2763 | if (any_count == 0) |
82075af2 | 2764 | { |
649a140c PA |
2765 | /* Add in each syscall to be caught. */ |
2766 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2767 | { |
649a140c PA |
2768 | if (syscall_counts[i] != 0) |
2769 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2770 | } |
2771 | } | |
1b81856f | 2772 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2773 | { |
2774 | /* catch_packet too big. Fallback to less efficient | |
2775 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2776 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2777 | } |
b80406ac | 2778 | else |
1b81856f | 2779 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2780 | } |
2781 | else | |
b80406ac | 2782 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2783 | |
b80406ac | 2784 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2785 | |
b80406ac | 2786 | putpkt (catch_packet); |
8d64371b | 2787 | getpkt (&rs->buf, 0); |
b80406ac TT |
2788 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); |
2789 | if (result == PACKET_OK) | |
2790 | return 0; | |
2791 | else | |
2792 | return -1; | |
82075af2 JS |
2793 | } |
2794 | ||
9b224c5e PA |
2795 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2796 | signals it should pass through to the inferior when detaching. */ | |
2797 | ||
f6ac5f3d | 2798 | void |
adc6a863 | 2799 | remote_target::program_signals (gdb::array_view<const unsigned char> signals) |
9b224c5e | 2800 | { |
4082afcc | 2801 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2802 | { |
2803 | char *packet, *p; | |
adc6a863 | 2804 | int count = 0; |
5e4a05c4 | 2805 | struct remote_state *rs = get_remote_state (); |
9b224c5e | 2806 | |
adc6a863 PA |
2807 | gdb_assert (signals.size () < 256); |
2808 | for (size_t i = 0; i < signals.size (); i++) | |
9b224c5e PA |
2809 | { |
2810 | if (signals[i]) | |
2811 | count++; | |
2812 | } | |
224c3ddb | 2813 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2814 | strcpy (packet, "QProgramSignals:"); |
2815 | p = packet + strlen (packet); | |
adc6a863 | 2816 | for (size_t i = 0; i < signals.size (); i++) |
9b224c5e PA |
2817 | { |
2818 | if (signal_pass_state (i)) | |
2819 | { | |
2820 | if (i >= 16) | |
2821 | *p++ = tohex (i >> 4); | |
2822 | *p++ = tohex (i & 15); | |
2823 | if (count) | |
2824 | *p++ = ';'; | |
2825 | else | |
2826 | break; | |
2827 | count--; | |
2828 | } | |
2829 | } | |
2830 | *p = 0; | |
5e4a05c4 TT |
2831 | if (!rs->last_program_signals_packet |
2832 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2833 | { |
9b224c5e | 2834 | putpkt (packet); |
8d64371b | 2835 | getpkt (&rs->buf, 0); |
8dc5b319 | 2836 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2837 | xfree (rs->last_program_signals_packet); |
2838 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2839 | } |
2840 | else | |
2841 | xfree (packet); | |
2842 | } | |
2843 | } | |
2844 | ||
79d7f229 PA |
2845 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2846 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2847 | thread. If GEN is set, set the general thread, if not, then set | |
2848 | the step/continue thread. */ | |
6b8edb51 PA |
2849 | void |
2850 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 2851 | { |
d01949b6 | 2852 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2853 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
8d64371b TT |
2854 | char *buf = rs->buf.data (); |
2855 | char *endbuf = buf + get_remote_packet_size (); | |
c906108c | 2856 | |
d7e15655 | 2857 | if (state == ptid) |
c906108c SS |
2858 | return; |
2859 | ||
79d7f229 PA |
2860 | *buf++ = 'H'; |
2861 | *buf++ = gen ? 'g' : 'c'; | |
d7e15655 | 2862 | if (ptid == magic_null_ptid) |
79d7f229 | 2863 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2864 | else if (ptid == any_thread_ptid) |
79d7f229 | 2865 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2866 | else if (ptid == minus_one_ptid) |
79d7f229 PA |
2867 | xsnprintf (buf, endbuf - buf, "-1"); |
2868 | else | |
82f73884 | 2869 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2870 | putpkt (rs->buf); |
8d64371b | 2871 | getpkt (&rs->buf, 0); |
c906108c | 2872 | if (gen) |
47f8a51d | 2873 | rs->general_thread = ptid; |
c906108c | 2874 | else |
47f8a51d | 2875 | rs->continue_thread = ptid; |
c906108c | 2876 | } |
79d7f229 | 2877 | |
6b8edb51 PA |
2878 | void |
2879 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
2880 | { |
2881 | set_thread (ptid, 1); | |
2882 | } | |
2883 | ||
6b8edb51 PA |
2884 | void |
2885 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
2886 | { |
2887 | set_thread (ptid, 0); | |
2888 | } | |
2889 | ||
3c9c4b83 PA |
2890 | /* Change the remote current process. Which thread within the process |
2891 | ends up selected isn't important, as long as it is the same process | |
2892 | as what INFERIOR_PTID points to. | |
2893 | ||
2894 | This comes from that fact that there is no explicit notion of | |
2895 | "selected process" in the protocol. The selected process for | |
2896 | general operations is the process the selected general thread | |
2897 | belongs to. */ | |
2898 | ||
6b8edb51 PA |
2899 | void |
2900 | remote_target::set_general_process () | |
3c9c4b83 PA |
2901 | { |
2902 | struct remote_state *rs = get_remote_state (); | |
2903 | ||
2904 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2905 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2906 | return; |
2907 | ||
2908 | /* We only need to change the remote current thread if it's pointing | |
2909 | at some other process. */ | |
e99b03dc | 2910 | if (rs->general_thread.pid () != inferior_ptid.pid ()) |
3c9c4b83 PA |
2911 | set_general_thread (inferior_ptid); |
2912 | } | |
2913 | ||
c906108c | 2914 | \f |
7d1a114c PA |
2915 | /* Return nonzero if this is the main thread that we made up ourselves |
2916 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2917 | |
2918 | static int | |
f6ac5f3d | 2919 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2920 | { |
d7e15655 | 2921 | if (ptid == magic_null_ptid) |
c0a2216e PA |
2922 | /* The main thread is always alive. */ |
2923 | return 1; | |
2924 | ||
e38504b3 | 2925 | if (ptid.pid () != 0 && ptid.lwp () == 0) |
c0a2216e PA |
2926 | /* The main thread is always alive. This can happen after a |
2927 | vAttach, if the remote side doesn't support | |
2928 | multi-threading. */ | |
2929 | return 1; | |
2930 | ||
7d1a114c PA |
2931 | return 0; |
2932 | } | |
2933 | ||
2934 | /* Return nonzero if the thread PTID is still alive on the remote | |
2935 | system. */ | |
2936 | ||
57810aa7 | 2937 | bool |
f6ac5f3d | 2938 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
2939 | { |
2940 | struct remote_state *rs = get_remote_state (); | |
2941 | char *p, *endp; | |
2942 | ||
2943 | /* Check if this is a thread that we made up ourselves to model | |
2944 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2945 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2946 | return 1; |
2947 | ||
8d64371b TT |
2948 | p = rs->buf.data (); |
2949 | endp = p + get_remote_packet_size (); | |
82f73884 PA |
2950 | |
2951 | *p++ = 'T'; | |
2952 | write_ptid (p, endp, ptid); | |
2953 | ||
2e9f7625 | 2954 | putpkt (rs->buf); |
8d64371b | 2955 | getpkt (&rs->buf, 0); |
2e9f7625 | 2956 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2957 | } |
2958 | ||
79efa585 SM |
2959 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2960 | The thread_info object owns the memory for the name. */ | |
2961 | ||
f6ac5f3d PA |
2962 | const char * |
2963 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
2964 | { |
2965 | if (info->priv != NULL) | |
a9334058 SM |
2966 | { |
2967 | const std::string &name = get_remote_thread_info (info)->name; | |
2968 | return !name.empty () ? name.c_str () : NULL; | |
2969 | } | |
79efa585 SM |
2970 | |
2971 | return NULL; | |
2972 | } | |
2973 | ||
c906108c SS |
2974 | /* About these extended threadlist and threadinfo packets. They are |
2975 | variable length packets but, the fields within them are often fixed | |
30baf67b | 2976 | length. They are redundant enough to send over UDP as is the |
c906108c SS |
2977 | remote protocol in general. There is a matching unit test module |
2978 | in libstub. */ | |
2979 | ||
23860348 | 2980 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2981 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2982 | changable. */ |
cce74817 JM |
2983 | |
2984 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2985 | Plan to fix this. */ |
cce74817 | 2986 | |
23860348 | 2987 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2988 | |
9d1f7ab2 | 2989 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2990 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2991 | |
2992 | struct gdb_ext_thread_info | |
c5aa993b | 2993 | { |
23860348 | 2994 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2995 | int active; /* Has state interesting to GDB? |
23860348 | 2996 | regs, stack. */ |
2bc416ba | 2997 | char display[256]; /* Brief state display, name, |
cedea757 | 2998 | blocked/suspended. */ |
23860348 | 2999 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 3000 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 3001 | whatever. */ |
c5aa993b | 3002 | }; |
cce74817 JM |
3003 | |
3004 | /* The volume of remote transfers can be limited by submitting | |
3005 | a mask containing bits specifying the desired information. | |
3006 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 3007 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
3008 | |
3009 | #define TAG_THREADID 1 | |
3010 | #define TAG_EXISTS 2 | |
3011 | #define TAG_DISPLAY 4 | |
3012 | #define TAG_THREADNAME 8 | |
c5aa993b | 3013 | #define TAG_MOREDISPLAY 16 |
cce74817 | 3014 | |
23860348 | 3015 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 3016 | |
cecb1912 | 3017 | static const char *unpack_nibble (const char *buf, int *val); |
cce74817 | 3018 | |
cecb1912 | 3019 | static const char *unpack_byte (const char *buf, int *value); |
cce74817 | 3020 | |
a14ed312 | 3021 | static char *pack_int (char *buf, int value); |
cce74817 | 3022 | |
cecb1912 | 3023 | static const char *unpack_int (const char *buf, int *value); |
cce74817 | 3024 | |
cecb1912 | 3025 | static const char *unpack_string (const char *src, char *dest, int length); |
cce74817 | 3026 | |
23860348 | 3027 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 3028 | |
cecb1912 | 3029 | static const char *unpack_threadid (const char *inbuf, threadref *id); |
cce74817 | 3030 | |
23860348 | 3031 | void int_to_threadref (threadref *id, int value); |
cce74817 | 3032 | |
23860348 | 3033 | static int threadref_to_int (threadref *ref); |
cce74817 | 3034 | |
23860348 | 3035 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 3036 | |
23860348 | 3037 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 3038 | |
2bc416ba | 3039 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 3040 | threadref *id); |
cce74817 | 3041 | |
a14ed312 KB |
3042 | static char *pack_threadlist_request (char *pkt, int startflag, |
3043 | int threadcount, | |
23860348 | 3044 | threadref *nextthread); |
cce74817 | 3045 | |
23860348 | 3046 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 3047 | |
82f73884 PA |
3048 | |
3049 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
3050 | buffer we're allowed to write to. Returns | |
3051 | BUF+CHARACTERS_WRITTEN. */ | |
3052 | ||
6b8edb51 PA |
3053 | char * |
3054 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
3055 | { |
3056 | int pid, tid; | |
3057 | struct remote_state *rs = get_remote_state (); | |
3058 | ||
3059 | if (remote_multi_process_p (rs)) | |
3060 | { | |
e99b03dc | 3061 | pid = ptid.pid (); |
82f73884 PA |
3062 | if (pid < 0) |
3063 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
3064 | else | |
3065 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
3066 | } | |
e38504b3 | 3067 | tid = ptid.lwp (); |
82f73884 PA |
3068 | if (tid < 0) |
3069 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
3070 | else | |
3071 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
3072 | ||
3073 | return buf; | |
3074 | } | |
3075 | ||
256642e8 PA |
3076 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
3077 | last parsed char. Returns null_ptid if no thread id is found, and | |
3078 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
3079 | |
3080 | static ptid_t | |
256642e8 | 3081 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 3082 | { |
256642e8 PA |
3083 | const char *p = buf; |
3084 | const char *pp; | |
82f73884 | 3085 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
3086 | |
3087 | if (*p == 'p') | |
3088 | { | |
3089 | /* Multi-process ptid. */ | |
3090 | pp = unpack_varlen_hex (p + 1, &pid); | |
3091 | if (*pp != '.') | |
b37520b6 | 3092 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
3093 | |
3094 | p = pp; | |
3095 | pp = unpack_varlen_hex (p + 1, &tid); | |
3096 | if (obuf) | |
3097 | *obuf = pp; | |
fd79271b | 3098 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3099 | } |
3100 | ||
3101 | /* No multi-process. Just a tid. */ | |
3102 | pp = unpack_varlen_hex (p, &tid); | |
3103 | ||
c9f35b34 KB |
3104 | /* Return null_ptid when no thread id is found. */ |
3105 | if (p == pp) | |
3106 | { | |
3107 | if (obuf) | |
3108 | *obuf = pp; | |
3109 | return null_ptid; | |
3110 | } | |
3111 | ||
82f73884 | 3112 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
3113 | what's in inferior_ptid, unless it's null at this point. If so, |
3114 | then since there's no way to know the pid of the reported | |
3115 | threads, use the magic number. */ | |
d7e15655 | 3116 | if (inferior_ptid == null_ptid) |
e99b03dc | 3117 | pid = magic_null_ptid.pid (); |
ca19bf23 | 3118 | else |
e99b03dc | 3119 | pid = inferior_ptid.pid (); |
82f73884 PA |
3120 | |
3121 | if (obuf) | |
3122 | *obuf = pp; | |
fd79271b | 3123 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3124 | } |
3125 | ||
c906108c | 3126 | static int |
fba45db2 | 3127 | stubhex (int ch) |
c906108c SS |
3128 | { |
3129 | if (ch >= 'a' && ch <= 'f') | |
3130 | return ch - 'a' + 10; | |
3131 | if (ch >= '0' && ch <= '9') | |
3132 | return ch - '0'; | |
3133 | if (ch >= 'A' && ch <= 'F') | |
3134 | return ch - 'A' + 10; | |
3135 | return -1; | |
3136 | } | |
3137 | ||
3138 | static int | |
cecb1912 | 3139 | stub_unpack_int (const char *buff, int fieldlength) |
c906108c SS |
3140 | { |
3141 | int nibble; | |
3142 | int retval = 0; | |
3143 | ||
3144 | while (fieldlength) | |
3145 | { | |
3146 | nibble = stubhex (*buff++); | |
3147 | retval |= nibble; | |
3148 | fieldlength--; | |
3149 | if (fieldlength) | |
3150 | retval = retval << 4; | |
3151 | } | |
3152 | return retval; | |
3153 | } | |
3154 | ||
cecb1912 SM |
3155 | static const char * |
3156 | unpack_nibble (const char *buf, int *val) | |
c906108c | 3157 | { |
b7589f7d | 3158 | *val = fromhex (*buf++); |
c906108c SS |
3159 | return buf; |
3160 | } | |
3161 | ||
cecb1912 SM |
3162 | static const char * |
3163 | unpack_byte (const char *buf, int *value) | |
c906108c SS |
3164 | { |
3165 | *value = stub_unpack_int (buf, 2); | |
3166 | return buf + 2; | |
3167 | } | |
3168 | ||
3169 | static char * | |
fba45db2 | 3170 | pack_int (char *buf, int value) |
c906108c SS |
3171 | { |
3172 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3173 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3174 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3175 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3176 | return buf; | |
3177 | } | |
3178 | ||
cecb1912 SM |
3179 | static const char * |
3180 | unpack_int (const char *buf, int *value) | |
c906108c SS |
3181 | { |
3182 | *value = stub_unpack_int (buf, 8); | |
3183 | return buf + 8; | |
3184 | } | |
3185 | ||
23860348 | 3186 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3187 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3188 | |
3189 | static char * | |
fba45db2 | 3190 | pack_string (char *pkt, char *string) |
c906108c SS |
3191 | { |
3192 | char ch; | |
3193 | int len; | |
3194 | ||
3195 | len = strlen (string); | |
3196 | if (len > 200) | |
23860348 | 3197 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3198 | pkt = pack_hex_byte (pkt, len); |
3199 | while (len-- > 0) | |
3200 | { | |
3201 | ch = *string++; | |
3202 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3203 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3204 | *pkt++ = ch; |
3205 | } | |
3206 | return pkt; | |
3207 | } | |
3208 | #endif /* 0 (unused) */ | |
3209 | ||
cecb1912 SM |
3210 | static const char * |
3211 | unpack_string (const char *src, char *dest, int length) | |
c906108c SS |
3212 | { |
3213 | while (length--) | |
3214 | *dest++ = *src++; | |
3215 | *dest = '\0'; | |
3216 | return src; | |
3217 | } | |
3218 | ||
3219 | static char * | |
fba45db2 | 3220 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3221 | { |
3222 | char *limit; | |
3223 | unsigned char *altid; | |
3224 | ||
3225 | altid = (unsigned char *) id; | |
3226 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3227 | while (pkt < limit) | |
3228 | pkt = pack_hex_byte (pkt, *altid++); | |
3229 | return pkt; | |
3230 | } | |
3231 | ||
3232 | ||
cecb1912 SM |
3233 | static const char * |
3234 | unpack_threadid (const char *inbuf, threadref *id) | |
c906108c SS |
3235 | { |
3236 | char *altref; | |
cecb1912 | 3237 | const char *limit = inbuf + BUF_THREAD_ID_SIZE; |
c906108c SS |
3238 | int x, y; |
3239 | ||
3240 | altref = (char *) id; | |
3241 | ||
3242 | while (inbuf < limit) | |
3243 | { | |
3244 | x = stubhex (*inbuf++); | |
3245 | y = stubhex (*inbuf++); | |
3246 | *altref++ = (x << 4) | y; | |
3247 | } | |
3248 | return inbuf; | |
3249 | } | |
3250 | ||
3251 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3252 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3253 | to use 64bit thread references internally. This is an adapter |
3254 | function. */ | |
3255 | ||
3256 | void | |
fba45db2 | 3257 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3258 | { |
3259 | unsigned char *scan; | |
3260 | ||
3261 | scan = (unsigned char *) id; | |
3262 | { | |
3263 | int i = 4; | |
3264 | while (i--) | |
3265 | *scan++ = 0; | |
3266 | } | |
3267 | *scan++ = (value >> 24) & 0xff; | |
3268 | *scan++ = (value >> 16) & 0xff; | |
3269 | *scan++ = (value >> 8) & 0xff; | |
3270 | *scan++ = (value & 0xff); | |
3271 | } | |
3272 | ||
3273 | static int | |
fba45db2 | 3274 | threadref_to_int (threadref *ref) |
c906108c SS |
3275 | { |
3276 | int i, value = 0; | |
3277 | unsigned char *scan; | |
3278 | ||
cfd77fa1 | 3279 | scan = *ref; |
c906108c SS |
3280 | scan += 4; |
3281 | i = 4; | |
3282 | while (i-- > 0) | |
3283 | value = (value << 8) | ((*scan++) & 0xff); | |
3284 | return value; | |
3285 | } | |
3286 | ||
3287 | static void | |
fba45db2 | 3288 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3289 | { |
3290 | int i; | |
3291 | unsigned char *csrc, *cdest; | |
3292 | ||
3293 | csrc = (unsigned char *) src; | |
3294 | cdest = (unsigned char *) dest; | |
3295 | i = 8; | |
3296 | while (i--) | |
3297 | *cdest++ = *csrc++; | |
3298 | } | |
3299 | ||
3300 | static int | |
fba45db2 | 3301 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3302 | { |
23860348 | 3303 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3304 | #if 0 |
3305 | unsigned char *srcp, *destp; | |
3306 | int i, result; | |
3307 | srcp = (char *) src; | |
3308 | destp = (char *) dest; | |
3309 | ||
3310 | result = 1; | |
3311 | while (i-- > 0) | |
3312 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3313 | return result; | |
3314 | #endif | |
3315 | return 1; | |
3316 | } | |
3317 | ||
3318 | /* | |
c5aa993b JM |
3319 | threadid:1, # always request threadid |
3320 | context_exists:2, | |
3321 | display:4, | |
3322 | unique_name:8, | |
3323 | more_display:16 | |
3324 | */ | |
c906108c SS |
3325 | |
3326 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3327 | ||
3328 | static char * | |
fba45db2 | 3329 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3330 | { |
23860348 MS |
3331 | *pkt++ = 'q'; /* Info Query */ |
3332 | *pkt++ = 'P'; /* process or thread info */ | |
3333 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3334 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3335 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3336 | return pkt; |
3337 | } | |
3338 | ||
23860348 | 3339 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3340 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3341 | add more fields as time goes by. */ |
c906108c | 3342 | |
23860348 | 3343 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3344 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3345 | fetch registers and its stack? */ |
c5aa993b | 3346 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3347 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3348 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3349 | the process. */ |
c906108c | 3350 | |
6b8edb51 | 3351 | int |
cecb1912 | 3352 | remote_target::remote_unpack_thread_info_response (const char *pkt, |
6b8edb51 PA |
3353 | threadref *expectedref, |
3354 | gdb_ext_thread_info *info) | |
c906108c | 3355 | { |
d01949b6 | 3356 | struct remote_state *rs = get_remote_state (); |
c906108c | 3357 | int mask, length; |
cfd77fa1 | 3358 | int tag; |
c906108c | 3359 | threadref ref; |
cecb1912 | 3360 | const char *limit = pkt + rs->buf.size (); /* Plausible parsing limit. */ |
c906108c SS |
3361 | int retval = 1; |
3362 | ||
23860348 | 3363 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3364 | info->active = 0; |
3365 | info->display[0] = '\0'; | |
3366 | info->shortname[0] = '\0'; | |
3367 | info->more_display[0] = '\0'; | |
3368 | ||
23860348 MS |
3369 | /* Assume the characters indicating the packet type have been |
3370 | stripped. */ | |
c906108c SS |
3371 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3372 | pkt = unpack_threadid (pkt, &ref); | |
3373 | ||
3374 | if (mask == 0) | |
8a3fe4f8 | 3375 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3376 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3377 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3378 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3379 | return 0; |
3380 | } | |
3381 | copy_threadref (&info->threadid, &ref); | |
3382 | ||
405feb71 | 3383 | /* Loop on tagged fields , try to bail if something goes wrong. */ |
c906108c | 3384 | |
23860348 MS |
3385 | /* Packets are terminated with nulls. */ |
3386 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3387 | { |
3388 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3389 | pkt = unpack_byte (pkt, &length); /* length */ |
3390 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3391 | { |
8a3fe4f8 | 3392 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3393 | retval = 0; |
3394 | break; | |
3395 | } | |
3396 | if (tag == TAG_THREADID) | |
3397 | { | |
3398 | if (length != 16) | |
3399 | { | |
8a3fe4f8 | 3400 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3401 | retval = 0; |
3402 | break; | |
3403 | } | |
3404 | pkt = unpack_threadid (pkt, &ref); | |
3405 | mask = mask & ~TAG_THREADID; | |
3406 | continue; | |
3407 | } | |
3408 | if (tag == TAG_EXISTS) | |
3409 | { | |
3410 | info->active = stub_unpack_int (pkt, length); | |
3411 | pkt += length; | |
3412 | mask = mask & ~(TAG_EXISTS); | |
3413 | if (length > 8) | |
3414 | { | |
8a3fe4f8 | 3415 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3416 | retval = 0; |
3417 | break; | |
3418 | } | |
3419 | continue; | |
3420 | } | |
3421 | if (tag == TAG_THREADNAME) | |
3422 | { | |
3423 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3424 | mask = mask & ~TAG_THREADNAME; | |
3425 | continue; | |
3426 | } | |
3427 | if (tag == TAG_DISPLAY) | |
3428 | { | |
3429 | pkt = unpack_string (pkt, &info->display[0], length); | |
3430 | mask = mask & ~TAG_DISPLAY; | |
3431 | continue; | |
3432 | } | |
3433 | if (tag == TAG_MOREDISPLAY) | |
3434 | { | |
3435 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3436 | mask = mask & ~TAG_MOREDISPLAY; | |
3437 | continue; | |
3438 | } | |
8a3fe4f8 | 3439 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3440 | break; /* Not a tag we know about. */ |
c906108c SS |
3441 | } |
3442 | return retval; | |
3443 | } | |
3444 | ||
6b8edb51 PA |
3445 | int |
3446 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3447 | int fieldset, | |
3448 | gdb_ext_thread_info *info) | |
c906108c | 3449 | { |
d01949b6 | 3450 | struct remote_state *rs = get_remote_state (); |
c906108c | 3451 | int result; |
c906108c | 3452 | |
8d64371b | 3453 | pack_threadinfo_request (rs->buf.data (), fieldset, threadid); |
2e9f7625 | 3454 | putpkt (rs->buf); |
8d64371b | 3455 | getpkt (&rs->buf, 0); |
3084dd77 PA |
3456 | |
3457 | if (rs->buf[0] == '\0') | |
3458 | return 0; | |
3459 | ||
8d64371b | 3460 | result = remote_unpack_thread_info_response (&rs->buf[2], |
23860348 | 3461 | threadid, info); |
c906108c SS |
3462 | return result; |
3463 | } | |
3464 | ||
c906108c SS |
3465 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3466 | ||
3467 | static char * | |
fba45db2 KB |
3468 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3469 | threadref *nextthread) | |
c906108c SS |
3470 | { |
3471 | *pkt++ = 'q'; /* info query packet */ | |
3472 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3473 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3474 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3475 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3476 | *pkt = '\0'; | |
3477 | return pkt; | |
3478 | } | |
3479 | ||
3480 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3481 | ||
6b8edb51 | 3482 | int |
cecb1912 | 3483 | remote_target::parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
3484 | threadref *original_echo, |
3485 | threadref *resultlist, | |
3486 | int *doneflag) | |
c906108c | 3487 | { |
d01949b6 | 3488 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3489 | int count, resultcount, done; |
3490 | ||
3491 | resultcount = 0; | |
3492 | /* Assume the 'q' and 'M chars have been stripped. */ | |
cecb1912 | 3493 | const char *limit = pkt + (rs->buf.size () - BUF_THREAD_ID_SIZE); |
23860348 | 3494 | /* done parse past here */ |
c906108c SS |
3495 | pkt = unpack_byte (pkt, &count); /* count field */ |
3496 | pkt = unpack_nibble (pkt, &done); | |
3497 | /* The first threadid is the argument threadid. */ | |
3498 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3499 | while ((count-- > 0) && (pkt < limit)) | |
3500 | { | |
3501 | pkt = unpack_threadid (pkt, resultlist++); | |
3502 | if (resultcount++ >= result_limit) | |
3503 | break; | |
3504 | } | |
3505 | if (doneflag) | |
3506 | *doneflag = done; | |
3507 | return resultcount; | |
3508 | } | |
3509 | ||
6dc54d91 PA |
3510 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3511 | qL packet is not supported, 0 on error and 1 on success. */ | |
3512 | ||
6b8edb51 PA |
3513 | int |
3514 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3515 | int result_limit, int *done, int *result_count, | |
3516 | threadref *threadlist) | |
c906108c | 3517 | { |
d01949b6 | 3518 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3519 | int result = 1; |
3520 | ||
405feb71 | 3521 | /* Truncate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3522 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3523 | >= get_remote_packet_size ()) | |
ea9c271d | 3524 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3525 | |
8d64371b TT |
3526 | pack_threadlist_request (rs->buf.data (), startflag, result_limit, |
3527 | nextthread); | |
6d820c5c | 3528 | putpkt (rs->buf); |
8d64371b TT |
3529 | getpkt (&rs->buf, 0); |
3530 | if (rs->buf[0] == '\0') | |
6dc54d91 PA |
3531 | { |
3532 | /* Packet not supported. */ | |
3533 | return -1; | |
3534 | } | |
3535 | ||
3536 | *result_count = | |
8d64371b | 3537 | parse_threadlist_response (&rs->buf[2], result_limit, |
6dc54d91 | 3538 | &rs->echo_nextthread, threadlist, done); |
c906108c | 3539 | |
0d031856 | 3540 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3541 | { |
23860348 | 3542 | /* FIXME: This is a good reason to drop the packet. */ |
405feb71 TV |
3543 | /* Possibly, there is a duplicate response. */ |
3544 | /* Possibilities : | |
dda83cd7 SM |
3545 | retransmit immediatly - race conditions |
3546 | retransmit after timeout - yes | |
3547 | exit | |
3548 | wait for packet, then exit | |
c906108c | 3549 | */ |
8a3fe4f8 | 3550 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3551 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3552 | } |
3553 | if (*result_count <= 0) | |
3554 | { | |
3555 | if (*done != 1) | |
3556 | { | |
8a3fe4f8 | 3557 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3558 | result = 0; |
3559 | } | |
3560 | return result; /* break; */ | |
3561 | } | |
3562 | if (*result_count > result_limit) | |
3563 | { | |
3564 | *result_count = 0; | |
8a3fe4f8 | 3565 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3566 | return 0; |
3567 | } | |
3568 | return result; | |
3569 | } | |
3570 | ||
6dc54d91 PA |
3571 | /* Fetch the list of remote threads, with the qL packet, and call |
3572 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3573 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3574 | STEPFUNCTION returns false. If the packet is not supported, | |
3575 | returns -1. */ | |
c906108c | 3576 | |
6b8edb51 PA |
3577 | int |
3578 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3579 | void *context, int looplimit) | |
c906108c | 3580 | { |
0d031856 | 3581 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3582 | int done, i, result_count; |
3583 | int startflag = 1; | |
3584 | int result = 1; | |
3585 | int loopcount = 0; | |
c906108c SS |
3586 | |
3587 | done = 0; | |
3588 | while (!done) | |
3589 | { | |
3590 | if (loopcount++ > looplimit) | |
3591 | { | |
3592 | result = 0; | |
8a3fe4f8 | 3593 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3594 | break; |
3595 | } | |
6dc54d91 PA |
3596 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3597 | MAXTHREADLISTRESULTS, | |
3598 | &done, &result_count, | |
3599 | rs->resultthreadlist); | |
3600 | if (result <= 0) | |
3601 | break; | |
23860348 | 3602 | /* Clear for later iterations. */ |
c906108c SS |
3603 | startflag = 0; |
3604 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3605 | if (result_count >= 1) | |
0d031856 TT |
3606 | copy_threadref (&rs->nextthread, |
3607 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3608 | i = 0; |
3609 | while (result_count--) | |
6dc54d91 PA |
3610 | { |
3611 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3612 | { | |
3613 | result = 0; | |
3614 | break; | |
3615 | } | |
3616 | } | |
c906108c SS |
3617 | } |
3618 | return result; | |
3619 | } | |
3620 | ||
6dc54d91 PA |
3621 | /* A thread found on the remote target. */ |
3622 | ||
21fe1c75 | 3623 | struct thread_item |
6dc54d91 | 3624 | { |
21fe1c75 SM |
3625 | explicit thread_item (ptid_t ptid_) |
3626 | : ptid (ptid_) | |
3627 | {} | |
3628 | ||
3629 | thread_item (thread_item &&other) = default; | |
3630 | thread_item &operator= (thread_item &&other) = default; | |
3631 | ||
3632 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3633 | ||
6dc54d91 PA |
3634 | /* The thread's PTID. */ |
3635 | ptid_t ptid; | |
3636 | ||
21fe1c75 SM |
3637 | /* The thread's extra info. */ |
3638 | std::string extra; | |
6dc54d91 | 3639 | |
21fe1c75 SM |
3640 | /* The thread's name. */ |
3641 | std::string name; | |
79efa585 | 3642 | |
6dc54d91 | 3643 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3644 | int core = -1; |
f6327dcb KB |
3645 | |
3646 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3647 | gdb::byte_vector thread_handle; |
21fe1c75 | 3648 | }; |
6dc54d91 PA |
3649 | |
3650 | /* Context passed around to the various methods listing remote | |
3651 | threads. As new threads are found, they're added to the ITEMS | |
3652 | vector. */ | |
3653 | ||
3654 | struct threads_listing_context | |
3655 | { | |
21fe1c75 SM |
3656 | /* Return true if this object contains an entry for a thread with ptid |
3657 | PTID. */ | |
6dc54d91 | 3658 | |
21fe1c75 SM |
3659 | bool contains_thread (ptid_t ptid) const |
3660 | { | |
3661 | auto match_ptid = [&] (const thread_item &item) | |
3662 | { | |
3663 | return item.ptid == ptid; | |
3664 | }; | |
80134cf5 | 3665 | |
21fe1c75 SM |
3666 | auto it = std::find_if (this->items.begin (), |
3667 | this->items.end (), | |
3668 | match_ptid); | |
80134cf5 | 3669 | |
21fe1c75 SM |
3670 | return it != this->items.end (); |
3671 | } | |
80134cf5 | 3672 | |
21fe1c75 | 3673 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3674 | |
21fe1c75 SM |
3675 | void remove_thread (ptid_t ptid) |
3676 | { | |
3677 | auto match_ptid = [&] (const thread_item &item) | |
3678 | { | |
dda83cd7 | 3679 | return item.ptid == ptid; |
21fe1c75 | 3680 | }; |
cbb8991c | 3681 | |
21fe1c75 SM |
3682 | auto it = std::remove_if (this->items.begin (), |
3683 | this->items.end (), | |
3684 | match_ptid); | |
cbb8991c | 3685 | |
21fe1c75 SM |
3686 | if (it != this->items.end ()) |
3687 | this->items.erase (it); | |
3688 | } | |
3689 | ||
3690 | /* The threads found on the remote target. */ | |
3691 | std::vector<thread_item> items; | |
3692 | }; | |
cbb8991c | 3693 | |
c906108c | 3694 | static int |
6dc54d91 | 3695 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3696 | { |
19ba03f4 SM |
3697 | struct threads_listing_context *context |
3698 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3699 | int pid = inferior_ptid.pid (); |
3700 | int lwp = threadref_to_int (ref); | |
3701 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3702 | |
21fe1c75 | 3703 | context->items.emplace_back (ptid); |
6dc54d91 | 3704 | |
c906108c SS |
3705 | return 1; /* continue iterator */ |
3706 | } | |
3707 | ||
3708 | #define CRAZY_MAX_THREADS 1000 | |
3709 | ||
6b8edb51 PA |
3710 | ptid_t |
3711 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3712 | { |
d01949b6 | 3713 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3714 | |
3715 | putpkt ("qC"); | |
8d64371b | 3716 | getpkt (&rs->buf, 0); |
2e9f7625 | 3717 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3718 | { |
256642e8 | 3719 | const char *obuf; |
c9f35b34 KB |
3720 | ptid_t result; |
3721 | ||
3722 | result = read_ptid (&rs->buf[2], &obuf); | |
2189c312 SM |
3723 | if (*obuf != '\0') |
3724 | remote_debug_printf ("warning: garbage in qC reply"); | |
c9f35b34 KB |
3725 | |
3726 | return result; | |
3727 | } | |
c906108c SS |
3728 | else |
3729 | return oldpid; | |
3730 | } | |
3731 | ||
6dc54d91 | 3732 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3733 | |
6b8edb51 PA |
3734 | int |
3735 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3736 | { |
6dc54d91 PA |
3737 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3738 | CRAZY_MAX_THREADS) >= 0) | |
3739 | return 1; | |
3740 | ||
3741 | return 0; | |
c906108c SS |
3742 | } |
3743 | ||
dc146f7c VP |
3744 | #if defined(HAVE_LIBEXPAT) |
3745 | ||
dc146f7c VP |
3746 | static void |
3747 | start_thread (struct gdb_xml_parser *parser, | |
3748 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3749 | void *user_data, |
3750 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3751 | { |
19ba03f4 SM |
3752 | struct threads_listing_context *data |
3753 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3754 | struct gdb_xml_value *attr; |
dc146f7c | 3755 | |
4d0fdd9b | 3756 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3757 | ptid_t ptid = read_ptid (id, NULL); |
3758 | ||
3759 | data->items.emplace_back (ptid); | |
3760 | thread_item &item = data->items.back (); | |
dc146f7c | 3761 | |
3d2c1d41 PA |
3762 | attr = xml_find_attribute (attributes, "core"); |
3763 | if (attr != NULL) | |
4d0fdd9b | 3764 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3765 | |
79efa585 | 3766 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3767 | if (attr != NULL) |
4d0fdd9b | 3768 | item.name = (const char *) attr->value.get (); |
79efa585 | 3769 | |
f6327dcb KB |
3770 | attr = xml_find_attribute (attributes, "handle"); |
3771 | if (attr != NULL) | |
4d0fdd9b | 3772 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3773 | } |
3774 | ||
3775 | static void | |
3776 | end_thread (struct gdb_xml_parser *parser, | |
3777 | const struct gdb_xml_element *element, | |
3778 | void *user_data, const char *body_text) | |
3779 | { | |
19ba03f4 SM |
3780 | struct threads_listing_context *data |
3781 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3782 | |
21fe1c75 SM |
3783 | if (body_text != NULL && *body_text != '\0') |
3784 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3785 | } |
3786 | ||
3787 | const struct gdb_xml_attribute thread_attributes[] = { | |
3788 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3789 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3790 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3791 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3792 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3793 | }; | |
3794 | ||
3795 | const struct gdb_xml_element thread_children[] = { | |
3796 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3797 | }; | |
3798 | ||
3799 | const struct gdb_xml_element threads_children[] = { | |
3800 | { "thread", thread_attributes, thread_children, | |
3801 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3802 | start_thread, end_thread }, | |
3803 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3804 | }; | |
3805 | ||
3806 | const struct gdb_xml_element threads_elements[] = { | |
3807 | { "threads", NULL, threads_children, | |
3808 | GDB_XML_EF_NONE, NULL, NULL }, | |
3809 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3810 | }; | |
3811 | ||
3812 | #endif | |
3813 | ||
6dc54d91 | 3814 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3815 | |
6b8edb51 PA |
3816 | int |
3817 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 3818 | { |
dc146f7c | 3819 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3820 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3821 | { |
9018be22 | 3822 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 3823 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3824 | |
9018be22 | 3825 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3826 | { |
6dc54d91 | 3827 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3828 | threads_elements, xml->data (), context); |
dc146f7c VP |
3829 | } |
3830 | ||
6dc54d91 | 3831 | return 1; |
dc146f7c VP |
3832 | } |
3833 | #endif | |
3834 | ||
6dc54d91 PA |
3835 | return 0; |
3836 | } | |
3837 | ||
3838 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3839 | ||
6b8edb51 PA |
3840 | int |
3841 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
3842 | { |
3843 | struct remote_state *rs = get_remote_state (); | |
3844 | ||
b80fafe3 | 3845 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3846 | { |
256642e8 | 3847 | const char *bufp; |
6dc54d91 | 3848 | |
9d1f7ab2 | 3849 | putpkt ("qfThreadInfo"); |
8d64371b TT |
3850 | getpkt (&rs->buf, 0); |
3851 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3852 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3853 | { |
9d1f7ab2 MS |
3854 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3855 | { | |
3856 | do | |
3857 | { | |
21fe1c75 SM |
3858 | ptid_t ptid = read_ptid (bufp, &bufp); |
3859 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3860 | } |
3861 | while (*bufp++ == ','); /* comma-separated list */ | |
3862 | putpkt ("qsThreadInfo"); | |
8d64371b TT |
3863 | getpkt (&rs->buf, 0); |
3864 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3865 | } |
6dc54d91 PA |
3866 | return 1; |
3867 | } | |
3868 | else | |
3869 | { | |
3870 | /* Packet not recognized. */ | |
3871 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3872 | } |
3873 | } | |
3874 | ||
6dc54d91 PA |
3875 | return 0; |
3876 | } | |
3877 | ||
a05575d3 TBA |
3878 | /* Return true if INF only has one non-exited thread. */ |
3879 | ||
3880 | static bool | |
3881 | has_single_non_exited_thread (inferior *inf) | |
3882 | { | |
3883 | int count = 0; | |
3884 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) | |
3885 | if (++count > 1) | |
3886 | break; | |
3887 | return count == 1; | |
3888 | } | |
3889 | ||
e8032dde | 3890 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3891 | targets. */ |
3892 | ||
f6ac5f3d PA |
3893 | void |
3894 | remote_target::update_thread_list () | |
6dc54d91 | 3895 | { |
6dc54d91 | 3896 | struct threads_listing_context context; |
ab970af1 | 3897 | int got_list = 0; |
e8032dde | 3898 | |
6dc54d91 PA |
3899 | /* We have a few different mechanisms to fetch the thread list. Try |
3900 | them all, starting with the most preferred one first, falling | |
3901 | back to older methods. */ | |
6b8edb51 PA |
3902 | if (remote_get_threads_with_qxfer (&context) |
3903 | || remote_get_threads_with_qthreadinfo (&context) | |
3904 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 3905 | { |
ab970af1 PA |
3906 | got_list = 1; |
3907 | ||
21fe1c75 | 3908 | if (context.items.empty () |
f6ac5f3d | 3909 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3910 | { |
3911 | /* Some targets don't really support threads, but still | |
3912 | reply an (empty) thread list in response to the thread | |
3913 | listing packets, instead of replying "packet not | |
3914 | supported". Exit early so we don't delete the main | |
3915 | thread. */ | |
7d1a114c PA |
3916 | return; |
3917 | } | |
3918 | ||
ab970af1 PA |
3919 | /* CONTEXT now holds the current thread list on the remote |
3920 | target end. Delete GDB-side threads no longer found on the | |
3921 | target. */ | |
08036331 | 3922 | for (thread_info *tp : all_threads_safe ()) |
cbb8991c | 3923 | { |
5b6d1e4f PA |
3924 | if (tp->inf->process_target () != this) |
3925 | continue; | |
3926 | ||
21fe1c75 | 3927 | if (!context.contains_thread (tp->ptid)) |
ab970af1 | 3928 | { |
a05575d3 TBA |
3929 | /* Do not remove the thread if it is the last thread in |
3930 | the inferior. This situation happens when we have a | |
3931 | pending exit process status to process. Otherwise we | |
3932 | may end up with a seemingly live inferior (i.e. pid | |
3933 | != 0) that has no threads. */ | |
3934 | if (has_single_non_exited_thread (tp->inf)) | |
3935 | continue; | |
3936 | ||
ab970af1 | 3937 | /* Not found. */ |
00431a78 | 3938 | delete_thread (tp); |
ab970af1 | 3939 | } |
cbb8991c DB |
3940 | } |
3941 | ||
3942 | /* Remove any unreported fork child threads from CONTEXT so | |
3943 | that we don't interfere with follow fork, which is where | |
3944 | creation of such threads is handled. */ | |
3945 | remove_new_fork_children (&context); | |
74531fed | 3946 | |
ab970af1 | 3947 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3948 | for (thread_item &item : context.items) |
6dc54d91 | 3949 | { |
21fe1c75 | 3950 | if (item.ptid != null_ptid) |
6dc54d91 | 3951 | { |
6dc54d91 | 3952 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3953 | executing until proven otherwise with a stop reply. |
3954 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3955 | stopped. */ |
0d5b594f | 3956 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3957 | |
21fe1c75 | 3958 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3959 | |
5b6d1e4f | 3960 | thread_info *tp = find_thread_ptid (this, item.ptid); |
00431a78 | 3961 | remote_thread_info *info = get_remote_thread_info (tp); |
21fe1c75 | 3962 | info->core = item.core; |
7aabaf9d SM |
3963 | info->extra = std::move (item.extra); |
3964 | info->name = std::move (item.name); | |
3965 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3966 | } |
3967 | } | |
3968 | } | |
3969 | ||
ab970af1 PA |
3970 | if (!got_list) |
3971 | { | |
3972 | /* If no thread listing method is supported, then query whether | |
3973 | each known thread is alive, one by one, with the T packet. | |
3974 | If the target doesn't support threads at all, then this is a | |
3975 | no-op. See remote_thread_alive. */ | |
3976 | prune_threads (); | |
3977 | } | |
9d1f7ab2 MS |
3978 | } |
3979 | ||
802188a7 | 3980 | /* |
9d1f7ab2 MS |
3981 | * Collect a descriptive string about the given thread. |
3982 | * The target may say anything it wants to about the thread | |
3983 | * (typically info about its blocked / runnable state, name, etc.). | |
3984 | * This string will appear in the info threads display. | |
802188a7 | 3985 | * |
9d1f7ab2 MS |
3986 | * Optional: targets are not required to implement this function. |
3987 | */ | |
3988 | ||
f6ac5f3d PA |
3989 | const char * |
3990 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 3991 | { |
d01949b6 | 3992 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3993 | int set; |
3994 | threadref id; | |
3995 | struct gdb_ext_thread_info threadinfo; | |
9d1f7ab2 | 3996 | |
5d93a237 | 3997 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3998 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3999 | _("remote_threads_extra_info")); |
9d1f7ab2 | 4000 | |
d7e15655 | 4001 | if (tp->ptid == magic_null_ptid |
e38504b3 | 4002 | || (tp->ptid.pid () != 0 && tp->ptid.lwp () == 0)) |
60e569b9 PA |
4003 | /* This is the main thread which was added by GDB. The remote |
4004 | server doesn't know about it. */ | |
4005 | return NULL; | |
4006 | ||
c76a8ea3 PA |
4007 | std::string &extra = get_remote_thread_info (tp)->extra; |
4008 | ||
4009 | /* If already have cached info, use it. */ | |
4010 | if (!extra.empty ()) | |
4011 | return extra.c_str (); | |
4012 | ||
4082afcc | 4013 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 4014 | { |
c76a8ea3 PA |
4015 | /* If we're using qXfer:threads:read, then the extra info is |
4016 | included in the XML. So if we didn't have anything cached, | |
4017 | it's because there's really no extra info. */ | |
4018 | return NULL; | |
dc146f7c VP |
4019 | } |
4020 | ||
b80fafe3 | 4021 | if (rs->use_threadextra_query) |
9d1f7ab2 | 4022 | { |
8d64371b TT |
4023 | char *b = rs->buf.data (); |
4024 | char *endb = b + get_remote_packet_size (); | |
82f73884 PA |
4025 | |
4026 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
4027 | b += strlen (b); | |
4028 | write_ptid (b, endb, tp->ptid); | |
4029 | ||
2e9f7625 | 4030 | putpkt (rs->buf); |
8d64371b | 4031 | getpkt (&rs->buf, 0); |
2e9f7625 | 4032 | if (rs->buf[0] != 0) |
9d1f7ab2 | 4033 | { |
8d64371b TT |
4034 | extra.resize (strlen (rs->buf.data ()) / 2); |
4035 | hex2bin (rs->buf.data (), (gdb_byte *) &extra[0], extra.size ()); | |
c76a8ea3 | 4036 | return extra.c_str (); |
9d1f7ab2 | 4037 | } |
0f71a2f6 | 4038 | } |
9d1f7ab2 MS |
4039 | |
4040 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 4041 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
4042 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
4043 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
e38504b3 | 4044 | int_to_threadref (&id, tp->ptid.lwp ()); |
9d1f7ab2 MS |
4045 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
4046 | if (threadinfo.active) | |
0f71a2f6 | 4047 | { |
9d1f7ab2 | 4048 | if (*threadinfo.shortname) |
c76a8ea3 | 4049 | string_appendf (extra, " Name: %s", threadinfo.shortname); |
9d1f7ab2 | 4050 | if (*threadinfo.display) |
c76a8ea3 PA |
4051 | { |
4052 | if (!extra.empty ()) | |
4053 | extra += ','; | |
4054 | string_appendf (extra, " State: %s", threadinfo.display); | |
4055 | } | |
9d1f7ab2 | 4056 | if (*threadinfo.more_display) |
c5aa993b | 4057 | { |
c76a8ea3 PA |
4058 | if (!extra.empty ()) |
4059 | extra += ','; | |
4060 | string_appendf (extra, " Priority: %s", threadinfo.more_display); | |
c5aa993b | 4061 | } |
c76a8ea3 | 4062 | return extra.c_str (); |
0f71a2f6 | 4063 | } |
9d1f7ab2 | 4064 | return NULL; |
0f71a2f6 | 4065 | } |
c906108c | 4066 | \f |
c5aa993b | 4067 | |
f6ac5f3d PA |
4068 | bool |
4069 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
4070 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
4071 | { |
4072 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 4073 | char *p = rs->buf.data (); |
0fb4aa4b | 4074 | |
bba74b36 | 4075 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
4076 | p += strlen (p); |
4077 | p += hexnumstr (p, addr); | |
4078 | putpkt (rs->buf); | |
8d64371b TT |
4079 | getpkt (&rs->buf, 0); |
4080 | p = rs->buf.data (); | |
0fb4aa4b PA |
4081 | |
4082 | if (*p == 'E') | |
4083 | error (_("Remote failure reply: %s"), p); | |
4084 | ||
4085 | if (*p++ == 'm') | |
4086 | { | |
256642e8 | 4087 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 4088 | return true; |
0fb4aa4b PA |
4089 | } |
4090 | ||
5d9310c4 | 4091 | return false; |
0fb4aa4b PA |
4092 | } |
4093 | ||
f6ac5f3d PA |
4094 | std::vector<static_tracepoint_marker> |
4095 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
4096 | { |
4097 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 4098 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 4099 | const char *p; |
5d9310c4 | 4100 | static_tracepoint_marker marker; |
0fb4aa4b PA |
4101 | |
4102 | /* Ask for a first packet of static tracepoint marker | |
4103 | definition. */ | |
4104 | putpkt ("qTfSTM"); | |
8d64371b TT |
4105 | getpkt (&rs->buf, 0); |
4106 | p = rs->buf.data (); | |
0fb4aa4b PA |
4107 | if (*p == 'E') |
4108 | error (_("Remote failure reply: %s"), p); | |
4109 | ||
0fb4aa4b PA |
4110 | while (*p++ == 'm') |
4111 | { | |
0fb4aa4b PA |
4112 | do |
4113 | { | |
5d9310c4 | 4114 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 4115 | |
5d9310c4 SM |
4116 | if (strid == NULL || marker.str_id == strid) |
4117 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
4118 | } |
4119 | while (*p++ == ','); /* comma-separated list */ | |
4120 | /* Ask for another packet of static tracepoint definition. */ | |
4121 | putpkt ("qTsSTM"); | |
8d64371b TT |
4122 | getpkt (&rs->buf, 0); |
4123 | p = rs->buf.data (); | |
0fb4aa4b PA |
4124 | } |
4125 | ||
0fb4aa4b PA |
4126 | return markers; |
4127 | } | |
4128 | ||
4129 | \f | |
10760264 JB |
4130 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
4131 | ||
f6ac5f3d PA |
4132 | ptid_t |
4133 | remote_target::get_ada_task_ptid (long lwp, long thread) | |
10760264 | 4134 | { |
e99b03dc | 4135 | return ptid_t (inferior_ptid.pid (), lwp, 0); |
10760264 JB |
4136 | } |
4137 | \f | |
4138 | ||
24b06219 | 4139 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 4140 | |
6b8edb51 PA |
4141 | void |
4142 | remote_target::extended_remote_restart () | |
c906108c | 4143 | { |
d01949b6 | 4144 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4145 | |
4146 | /* Send the restart command; for reasons I don't understand the | |
4147 | remote side really expects a number after the "R". */ | |
8d64371b | 4148 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "R%x", 0); |
6d820c5c | 4149 | putpkt (rs->buf); |
c906108c | 4150 | |
ad9a8f3f | 4151 | remote_fileio_reset (); |
c906108c SS |
4152 | } |
4153 | \f | |
4154 | /* Clean up connection to a remote debugger. */ | |
4155 | ||
f6ac5f3d PA |
4156 | void |
4157 | remote_target::close () | |
c906108c | 4158 | { |
048094ac | 4159 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4160 | terminal_ours (); |
ce5ce7ed | 4161 | |
6b8edb51 PA |
4162 | trace_reset_local_state (); |
4163 | ||
4164 | delete this; | |
4165 | } | |
4166 | ||
4167 | remote_target::~remote_target () | |
4168 | { | |
4169 | struct remote_state *rs = get_remote_state (); | |
4170 | ||
4171 | /* Check for NULL because we may get here with a partially | |
4172 | constructed target/connection. */ | |
4173 | if (rs->remote_desc == nullptr) | |
4174 | return; | |
4175 | ||
4176 | serial_close (rs->remote_desc); | |
4177 | ||
4178 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4179 | everything of this target. */ |
6b8edb51 | 4180 | discard_pending_stop_replies_in_queue (); |
74531fed | 4181 | |
6b8edb51 PA |
4182 | if (rs->remote_async_inferior_event_token) |
4183 | delete_async_event_handler (&rs->remote_async_inferior_event_token); | |
722247f1 | 4184 | |
97dfbadd | 4185 | delete rs->notif_state; |
c906108c SS |
4186 | } |
4187 | ||
23860348 | 4188 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4189 | |
6b8edb51 PA |
4190 | void |
4191 | remote_target::get_offsets () | |
c906108c | 4192 | { |
d01949b6 | 4193 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4194 | char *buf; |
085dd6e6 | 4195 | char *ptr; |
31d99776 DJ |
4196 | int lose, num_segments = 0, do_sections, do_segments; |
4197 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
31d99776 | 4198 | |
a42d7dd8 | 4199 | if (current_program_space->symfile_object_file == NULL) |
31d99776 | 4200 | return; |
c906108c SS |
4201 | |
4202 | putpkt ("qOffsets"); | |
8d64371b TT |
4203 | getpkt (&rs->buf, 0); |
4204 | buf = rs->buf.data (); | |
c906108c SS |
4205 | |
4206 | if (buf[0] == '\000') | |
4207 | return; /* Return silently. Stub doesn't support | |
23860348 | 4208 | this command. */ |
c906108c SS |
4209 | if (buf[0] == 'E') |
4210 | { | |
8a3fe4f8 | 4211 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4212 | return; |
4213 | } | |
4214 | ||
4215 | /* Pick up each field in turn. This used to be done with scanf, but | |
4216 | scanf will make trouble if CORE_ADDR size doesn't match | |
4217 | conversion directives correctly. The following code will work | |
4218 | with any size of CORE_ADDR. */ | |
4219 | text_addr = data_addr = bss_addr = 0; | |
4220 | ptr = buf; | |
4221 | lose = 0; | |
4222 | ||
61012eef | 4223 | if (startswith (ptr, "Text=")) |
c906108c SS |
4224 | { |
4225 | ptr += 5; | |
4226 | /* Don't use strtol, could lose on big values. */ | |
4227 | while (*ptr && *ptr != ';') | |
4228 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4229 | |
61012eef | 4230 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4231 | { |
4232 | ptr += 6; | |
4233 | while (*ptr && *ptr != ';') | |
4234 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4235 | } | |
4236 | else | |
4237 | lose = 1; | |
4238 | ||
61012eef | 4239 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4240 | { |
4241 | ptr += 5; | |
4242 | while (*ptr && *ptr != ';') | |
4243 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4244 | |
31d99776 DJ |
4245 | if (bss_addr != data_addr) |
4246 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4247 | } | |
4248 | else | |
4249 | lose = 1; | |
4250 | } | |
61012eef | 4251 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4252 | { |
31d99776 DJ |
4253 | ptr += 8; |
4254 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4255 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4256 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4257 | num_segments = 1; | |
4258 | ||
61012eef | 4259 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4260 | { |
4261 | ptr += 9; | |
4262 | while (*ptr && *ptr != ';') | |
4263 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4264 | num_segments++; | |
4265 | } | |
c906108c SS |
4266 | } |
4267 | else | |
4268 | lose = 1; | |
4269 | ||
4270 | if (lose) | |
8a3fe4f8 | 4271 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4272 | else if (*ptr != '\0') |
4273 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4274 | |
a42d7dd8 TT |
4275 | objfile *objf = current_program_space->symfile_object_file; |
4276 | section_offsets offs = objf->section_offsets; | |
c906108c | 4277 | |
a42d7dd8 | 4278 | symfile_segment_data_up data = get_symfile_segment_data (objf->obfd); |
31d99776 DJ |
4279 | do_segments = (data != NULL); |
4280 | do_sections = num_segments == 0; | |
c906108c | 4281 | |
28c32713 | 4282 | if (num_segments > 0) |
31d99776 | 4283 | { |
31d99776 DJ |
4284 | segments[0] = text_addr; |
4285 | segments[1] = data_addr; | |
4286 | } | |
28c32713 JB |
4287 | /* If we have two segments, we can still try to relocate everything |
4288 | by assuming that the .text and .data offsets apply to the whole | |
4289 | text and data segments. Convert the offsets given in the packet | |
4290 | to base addresses for symfile_map_offsets_to_segments. */ | |
68b888ff | 4291 | else if (data != nullptr && data->segments.size () == 2) |
28c32713 | 4292 | { |
68b888ff SM |
4293 | segments[0] = data->segments[0].base + text_addr; |
4294 | segments[1] = data->segments[1].base + data_addr; | |
28c32713 JB |
4295 | num_segments = 2; |
4296 | } | |
8d385431 DJ |
4297 | /* If the object file has only one segment, assume that it is text |
4298 | rather than data; main programs with no writable data are rare, | |
4299 | but programs with no code are useless. Of course the code might | |
4300 | have ended up in the data segment... to detect that we would need | |
4301 | the permissions here. */ | |
68b888ff | 4302 | else if (data && data->segments.size () == 1) |
8d385431 | 4303 | { |
68b888ff | 4304 | segments[0] = data->segments[0].base + text_addr; |
8d385431 DJ |
4305 | num_segments = 1; |
4306 | } | |
28c32713 JB |
4307 | /* There's no way to relocate by segment. */ |
4308 | else | |
4309 | do_segments = 0; | |
31d99776 DJ |
4310 | |
4311 | if (do_segments) | |
4312 | { | |
a42d7dd8 | 4313 | int ret = symfile_map_offsets_to_segments (objf->obfd, |
62982abd SM |
4314 | data.get (), offs, |
4315 | num_segments, segments); | |
31d99776 DJ |
4316 | |
4317 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4318 | error (_("Can not handle qOffsets TextSeg " |
4319 | "response with this symbol file")); | |
31d99776 DJ |
4320 | |
4321 | if (ret > 0) | |
4322 | do_sections = 0; | |
4323 | } | |
c906108c | 4324 | |
31d99776 DJ |
4325 | if (do_sections) |
4326 | { | |
a42d7dd8 | 4327 | offs[SECT_OFF_TEXT (objf)] = text_addr; |
31d99776 | 4328 | |
3e43a32a MS |
4329 | /* This is a temporary kludge to force data and bss to use the |
4330 | same offsets because that's what nlmconv does now. The real | |
4331 | solution requires changes to the stub and remote.c that I | |
4332 | don't have time to do right now. */ | |
31d99776 | 4333 | |
a42d7dd8 TT |
4334 | offs[SECT_OFF_DATA (objf)] = data_addr; |
4335 | offs[SECT_OFF_BSS (objf)] = data_addr; | |
31d99776 | 4336 | } |
c906108c | 4337 | |
a42d7dd8 | 4338 | objfile_relocate (objf, offs); |
c906108c SS |
4339 | } |
4340 | ||
9a7071a8 | 4341 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4342 | |
4343 | void | |
4344 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4345 | { |
5d93a237 TT |
4346 | struct remote_state *rs = get_remote_state (); |
4347 | ||
9a7071a8 | 4348 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4349 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4350 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4351 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4352 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4353 | { | |
5d93a237 | 4354 | serial_send_break (rs->remote_desc); |
c33e31fd | 4355 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4356 | } |
4357 | else | |
4358 | internal_error (__FILE__, __LINE__, | |
4359 | _("Invalid value for interrupt_sequence_mode: %s."), | |
4360 | interrupt_sequence_mode); | |
4361 | } | |
4362 | ||
3405876a PA |
4363 | |
4364 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4365 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4366 | ||
4367 | static ptid_t | |
e3b2741b | 4368 | stop_reply_extract_thread (const char *stop_reply) |
3405876a PA |
4369 | { |
4370 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4371 | { | |
256642e8 | 4372 | const char *p; |
3405876a PA |
4373 | |
4374 | /* Txx r:val ; r:val (...) */ | |
4375 | p = &stop_reply[3]; | |
4376 | ||
4377 | /* Look for "register" named "thread". */ | |
4378 | while (*p != '\0') | |
4379 | { | |
256642e8 | 4380 | const char *p1; |
3405876a PA |
4381 | |
4382 | p1 = strchr (p, ':'); | |
4383 | if (p1 == NULL) | |
4384 | return null_ptid; | |
4385 | ||
4386 | if (strncmp (p, "thread", p1 - p) == 0) | |
4387 | return read_ptid (++p1, &p); | |
4388 | ||
4389 | p1 = strchr (p, ';'); | |
4390 | if (p1 == NULL) | |
4391 | return null_ptid; | |
4392 | p1++; | |
4393 | ||
4394 | p = p1; | |
4395 | } | |
4396 | } | |
4397 | ||
4398 | return null_ptid; | |
4399 | } | |
4400 | ||
b7ea362b PA |
4401 | /* Determine the remote side's current thread. If we have a stop |
4402 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4403 | "thread" register we can extract the current thread from. If not, | |
4404 | ask the remote which is the current thread with qC. The former | |
4405 | method avoids a roundtrip. */ | |
4406 | ||
6b8edb51 | 4407 | ptid_t |
e3b2741b | 4408 | remote_target::get_current_thread (const char *wait_status) |
b7ea362b | 4409 | { |
6a49a997 | 4410 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4411 | |
4412 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4413 | the target architecture, which we haven't yet fully determined at | |
4414 | this point. */ | |
4415 | if (wait_status != NULL) | |
4416 | ptid = stop_reply_extract_thread (wait_status); | |
d7e15655 | 4417 | if (ptid == null_ptid) |
b7ea362b PA |
4418 | ptid = remote_current_thread (inferior_ptid); |
4419 | ||
4420 | return ptid; | |
4421 | } | |
4422 | ||
49c62f2e PA |
4423 | /* Query the remote target for which is the current thread/process, |
4424 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4425 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4426 | to return the current thread. |
4427 | ||
4428 | This function is called after handling the '?' or 'vRun' packets, | |
4429 | whose response is a stop reply from which we can also try | |
4430 | extracting the thread. If the target doesn't support the explicit | |
4431 | qC query, we infer the current thread from that stop reply, passed | |
64d38fdd | 4432 | in in WAIT_STATUS, which may be NULL. |
49c62f2e | 4433 | |
64d38fdd JM |
4434 | The function returns pointer to the main thread of the inferior. */ |
4435 | ||
4436 | thread_info * | |
e3b2741b | 4437 | remote_target::add_current_inferior_and_thread (const char *wait_status) |
49c62f2e PA |
4438 | { |
4439 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 4440 | bool fake_pid_p = false; |
49c62f2e | 4441 | |
0ac55310 | 4442 | switch_to_no_thread (); |
49c62f2e | 4443 | |
0ac55310 PA |
4444 | /* Now, if we have thread information, update the current thread's |
4445 | ptid. */ | |
87215ad1 | 4446 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4447 | |
87215ad1 | 4448 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4449 | { |
4450 | if (!remote_multi_process_p (rs)) | |
9ab8741a | 4451 | fake_pid_p = true; |
49c62f2e PA |
4452 | } |
4453 | else | |
4454 | { | |
4455 | /* Without this, some commands which require an active target | |
4456 | (such as kill) won't work. This variable serves (at least) | |
4457 | double duty as both the pid of the target process (if it has | |
4458 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4459 | curr_ptid = magic_null_ptid; |
9ab8741a | 4460 | fake_pid_p = true; |
49c62f2e PA |
4461 | } |
4462 | ||
e99b03dc | 4463 | remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1); |
49c62f2e | 4464 | |
87215ad1 SDJ |
4465 | /* Add the main thread and switch to it. Don't try reading |
4466 | registers yet, since we haven't fetched the target description | |
4467 | yet. */ | |
5b6d1e4f | 4468 | thread_info *tp = add_thread_silent (this, curr_ptid); |
87215ad1 | 4469 | switch_to_thread_no_regs (tp); |
64d38fdd JM |
4470 | |
4471 | return tp; | |
49c62f2e PA |
4472 | } |
4473 | ||
6efcd9a8 PA |
4474 | /* Print info about a thread that was found already stopped on |
4475 | connection. */ | |
4476 | ||
4477 | static void | |
4478 | print_one_stopped_thread (struct thread_info *thread) | |
4479 | { | |
4480 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
4481 | ||
00431a78 | 4482 | switch_to_thread (thread); |
f2ffa92b | 4483 | thread->suspend.stop_pc = get_frame_pc (get_current_frame ()); |
6efcd9a8 PA |
4484 | set_current_sal_from_frame (get_current_frame ()); |
4485 | ||
4486 | thread->suspend.waitstatus_pending_p = 0; | |
4487 | ||
4488 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
4489 | { | |
4490 | enum gdb_signal sig = ws->value.sig; | |
4491 | ||
4492 | if (signal_print_state (sig)) | |
76727919 | 4493 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4494 | } |
76727919 | 4495 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4496 | } |
4497 | ||
221e1a37 PA |
4498 | /* Process all initial stop replies the remote side sent in response |
4499 | to the ? packet. These indicate threads that were already stopped | |
4500 | on initial connection. We mark these threads as stopped and print | |
4501 | their current frame before giving the user the prompt. */ | |
4502 | ||
6b8edb51 PA |
4503 | void |
4504 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4505 | { |
4506 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4507 | struct thread_info *selected = NULL; |
4508 | struct thread_info *lowest_stopped = NULL; | |
4509 | struct thread_info *first = NULL; | |
221e1a37 PA |
4510 | |
4511 | /* Consume the initial pending events. */ | |
4512 | while (pending_stop_replies-- > 0) | |
4513 | { | |
4514 | ptid_t waiton_ptid = minus_one_ptid; | |
4515 | ptid_t event_ptid; | |
4516 | struct target_waitstatus ws; | |
4517 | int ignore_event = 0; | |
4518 | ||
4519 | memset (&ws, 0, sizeof (ws)); | |
4520 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
4521 | if (remote_debug) | |
4522 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
4523 | ||
4524 | switch (ws.kind) | |
4525 | { | |
4526 | case TARGET_WAITKIND_IGNORE: | |
4527 | case TARGET_WAITKIND_NO_RESUMED: | |
4528 | case TARGET_WAITKIND_SIGNALLED: | |
4529 | case TARGET_WAITKIND_EXITED: | |
4530 | /* We shouldn't see these, but if we do, just ignore. */ | |
2189c312 | 4531 | remote_debug_printf ("event ignored"); |
221e1a37 PA |
4532 | ignore_event = 1; |
4533 | break; | |
4534 | ||
4535 | case TARGET_WAITKIND_EXECD: | |
4536 | xfree (ws.value.execd_pathname); | |
4537 | break; | |
4538 | default: | |
4539 | break; | |
4540 | } | |
4541 | ||
4542 | if (ignore_event) | |
4543 | continue; | |
4544 | ||
5b6d1e4f | 4545 | thread_info *evthread = find_thread_ptid (this, event_ptid); |
221e1a37 PA |
4546 | |
4547 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
4548 | { | |
4549 | enum gdb_signal sig = ws.value.sig; | |
4550 | ||
4551 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4552 | instead of signal 0. Suppress it. */ | |
4553 | if (sig == GDB_SIGNAL_TRAP) | |
4554 | sig = GDB_SIGNAL_0; | |
b926417a | 4555 | evthread->suspend.stop_signal = sig; |
6efcd9a8 PA |
4556 | ws.value.sig = sig; |
4557 | } | |
221e1a37 | 4558 | |
b926417a | 4559 | evthread->suspend.waitstatus = ws; |
6efcd9a8 PA |
4560 | |
4561 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
4562 | || ws.value.sig != GDB_SIGNAL_0) | |
b926417a | 4563 | evthread->suspend.waitstatus_pending_p = 1; |
6efcd9a8 | 4564 | |
719546c4 SM |
4565 | set_executing (this, event_ptid, false); |
4566 | set_running (this, event_ptid, false); | |
c9d22089 | 4567 | get_remote_thread_info (evthread)->set_not_resumed (); |
6efcd9a8 PA |
4568 | } |
4569 | ||
4570 | /* "Notice" the new inferiors before anything related to | |
4571 | registers/memory. */ | |
5b6d1e4f | 4572 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4573 | { |
6efcd9a8 PA |
4574 | inf->needs_setup = 1; |
4575 | ||
4576 | if (non_stop) | |
4577 | { | |
08036331 | 4578 | thread_info *thread = any_live_thread_of_inferior (inf); |
00431a78 | 4579 | notice_new_inferior (thread, thread->state == THREAD_RUNNING, |
6efcd9a8 PA |
4580 | from_tty); |
4581 | } | |
4582 | } | |
4583 | ||
4584 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4585 | records the threads' stop pc, so must be done after "noticing" | |
4586 | the inferiors. */ | |
4587 | if (!non_stop) | |
4588 | { | |
4589 | stop_all_threads (); | |
4590 | ||
4591 | /* If all threads of an inferior were already stopped, we | |
4592 | haven't setup the inferior yet. */ | |
5b6d1e4f | 4593 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4594 | { |
6efcd9a8 PA |
4595 | if (inf->needs_setup) |
4596 | { | |
08036331 | 4597 | thread_info *thread = any_live_thread_of_inferior (inf); |
6efcd9a8 PA |
4598 | switch_to_thread_no_regs (thread); |
4599 | setup_inferior (0); | |
4600 | } | |
4601 | } | |
221e1a37 | 4602 | } |
6efcd9a8 PA |
4603 | |
4604 | /* Now go over all threads that are stopped, and print their current | |
4605 | frame. If all-stop, then if there's a signalled thread, pick | |
4606 | that as current. */ | |
5b6d1e4f | 4607 | for (thread_info *thread : all_non_exited_threads (this)) |
6efcd9a8 | 4608 | { |
6efcd9a8 PA |
4609 | if (first == NULL) |
4610 | first = thread; | |
4611 | ||
4612 | if (!non_stop) | |
00431a78 | 4613 | thread->set_running (false); |
6efcd9a8 PA |
4614 | else if (thread->state != THREAD_STOPPED) |
4615 | continue; | |
4616 | ||
6efcd9a8 PA |
4617 | if (selected == NULL |
4618 | && thread->suspend.waitstatus_pending_p) | |
4619 | selected = thread; | |
4620 | ||
5d5658a1 PA |
4621 | if (lowest_stopped == NULL |
4622 | || thread->inf->num < lowest_stopped->inf->num | |
4623 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4624 | lowest_stopped = thread; |
4625 | ||
4626 | if (non_stop) | |
4627 | print_one_stopped_thread (thread); | |
4628 | } | |
4629 | ||
4630 | /* In all-stop, we only print the status of one thread, and leave | |
4631 | others with their status pending. */ | |
4632 | if (!non_stop) | |
4633 | { | |
08036331 | 4634 | thread_info *thread = selected; |
6efcd9a8 PA |
4635 | if (thread == NULL) |
4636 | thread = lowest_stopped; | |
4637 | if (thread == NULL) | |
4638 | thread = first; | |
4639 | ||
4640 | print_one_stopped_thread (thread); | |
4641 | } | |
4642 | ||
4643 | /* For "info program". */ | |
08036331 | 4644 | thread_info *thread = inferior_thread (); |
6efcd9a8 | 4645 | if (thread->state == THREAD_STOPPED) |
5b6d1e4f | 4646 | set_last_target_status (this, inferior_ptid, thread->suspend.waitstatus); |
221e1a37 PA |
4647 | } |
4648 | ||
048094ac PA |
4649 | /* Start the remote connection and sync state. */ |
4650 | ||
f6ac5f3d PA |
4651 | void |
4652 | remote_target::start_remote (int from_tty, int extended_p) | |
c906108c | 4653 | { |
2189c312 SM |
4654 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
4655 | ||
c8d104ad PA |
4656 | struct remote_state *rs = get_remote_state (); |
4657 | struct packet_config *noack_config; | |
8621d6a9 | 4658 | |
048094ac PA |
4659 | /* Signal other parts that we're going through the initial setup, |
4660 | and so things may not be stable yet. E.g., we don't try to | |
4661 | install tracepoints until we've relocated symbols. Also, a | |
4662 | Ctrl-C before we're connected and synced up can't interrupt the | |
4663 | target. Instead, it offers to drop the (potentially wedged) | |
4664 | connection. */ | |
4665 | rs->starting_up = 1; | |
4666 | ||
522002f9 | 4667 | QUIT; |
c906108c | 4668 | |
9a7071a8 JB |
4669 | if (interrupt_on_connect) |
4670 | send_interrupt_sequence (); | |
4671 | ||
57e12211 | 4672 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4673 | remote_serial_write ("+", 1); |
1e51243a | 4674 | |
c8d104ad PA |
4675 | /* The first packet we send to the target is the optional "supported |
4676 | packets" request. If the target can answer this, it will tell us | |
4677 | which later probes to skip. */ | |
4678 | remote_query_supported (); | |
4679 | ||
d914c394 | 4680 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4681 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4682 | set_permissions (); |
d914c394 | 4683 | |
57809e5e JK |
4684 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4685 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4686 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4687 | invalid reply and GDB would return error in | |
4688 | remote_hostio_set_filesystem, making remote files access impossible. | |
4689 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4690 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4691 | { | |
4692 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4693 | ||
4694 | putpkt (v_mustreplyempty); | |
8d64371b TT |
4695 | getpkt (&rs->buf, 0); |
4696 | if (strcmp (rs->buf.data (), "OK") == 0) | |
57809e5e | 4697 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; |
8d64371b | 4698 | else if (strcmp (rs->buf.data (), "") != 0) |
57809e5e | 4699 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, |
8d64371b | 4700 | rs->buf.data ()); |
57809e5e JK |
4701 | } |
4702 | ||
c8d104ad PA |
4703 | /* Next, we possibly activate noack mode. |
4704 | ||
4705 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4706 | enable noack mode if the stub reported a wish for it with | |
4707 | qSupported. | |
4708 | ||
4709 | If set to TRUE, then enable noack mode even if the stub didn't | |
4710 | report it in qSupported. If the stub doesn't reply OK, the | |
4711 | session ends with an error. | |
4712 | ||
4713 | If FALSE, then don't activate noack mode, regardless of what the | |
4714 | stub claimed should be the default with qSupported. */ | |
4715 | ||
4716 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4717 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4718 | { |
4719 | putpkt ("QStartNoAckMode"); | |
8d64371b | 4720 | getpkt (&rs->buf, 0); |
c8d104ad PA |
4721 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) |
4722 | rs->noack_mode = 1; | |
4723 | } | |
4724 | ||
04bd08de | 4725 | if (extended_p) |
5fe04517 PA |
4726 | { |
4727 | /* Tell the remote that we are using the extended protocol. */ | |
4728 | putpkt ("!"); | |
8d64371b | 4729 | getpkt (&rs->buf, 0); |
5fe04517 PA |
4730 | } |
4731 | ||
9b224c5e PA |
4732 | /* Let the target know which signals it is allowed to pass down to |
4733 | the program. */ | |
4734 | update_signals_program_target (); | |
4735 | ||
d962ef82 DJ |
4736 | /* Next, if the target can specify a description, read it. We do |
4737 | this before anything involving memory or registers. */ | |
4738 | target_find_description (); | |
4739 | ||
6c95b8df PA |
4740 | /* Next, now that we know something about the target, update the |
4741 | address spaces in the program spaces. */ | |
4742 | update_address_spaces (); | |
4743 | ||
50c71eaf PA |
4744 | /* On OSs where the list of libraries is global to all |
4745 | processes, we fetch them early. */ | |
f5656ead | 4746 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4747 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4748 | |
6efcd9a8 | 4749 | if (target_is_non_stop_p ()) |
74531fed | 4750 | { |
4082afcc | 4751 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4752 | error (_("Non-stop mode requested, but remote " |
4753 | "does not support non-stop")); | |
74531fed PA |
4754 | |
4755 | putpkt ("QNonStop:1"); | |
8d64371b | 4756 | getpkt (&rs->buf, 0); |
74531fed | 4757 | |
8d64371b TT |
4758 | if (strcmp (rs->buf.data (), "OK") != 0) |
4759 | error (_("Remote refused setting non-stop mode with: %s"), | |
4760 | rs->buf.data ()); | |
74531fed PA |
4761 | |
4762 | /* Find about threads and processes the stub is already | |
4763 | controlling. We default to adding them in the running state. | |
4764 | The '?' query below will then tell us about which threads are | |
4765 | stopped. */ | |
f6ac5f3d | 4766 | this->update_thread_list (); |
74531fed | 4767 | } |
4082afcc | 4768 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4769 | { |
4770 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4771 | Request it explicitly. */ |
74531fed | 4772 | putpkt ("QNonStop:0"); |
8d64371b | 4773 | getpkt (&rs->buf, 0); |
74531fed | 4774 | |
8d64371b TT |
4775 | if (strcmp (rs->buf.data (), "OK") != 0) |
4776 | error (_("Remote refused setting all-stop mode with: %s"), | |
4777 | rs->buf.data ()); | |
74531fed PA |
4778 | } |
4779 | ||
a0743c90 YQ |
4780 | /* Upload TSVs regardless of whether the target is running or not. The |
4781 | remote stub, such as GDBserver, may have some predefined or builtin | |
4782 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4783 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4784 | { |
4785 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4786 | ||
f6ac5f3d | 4787 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4788 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4789 | } | |
4790 | ||
2d717e4f DJ |
4791 | /* Check whether the target is running now. */ |
4792 | putpkt ("?"); | |
8d64371b | 4793 | getpkt (&rs->buf, 0); |
2d717e4f | 4794 | |
6efcd9a8 | 4795 | if (!target_is_non_stop_p ()) |
2d717e4f | 4796 | { |
b5c8f22d SM |
4797 | char *wait_status = NULL; |
4798 | ||
74531fed | 4799 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4800 | { |
04bd08de | 4801 | if (!extended_p) |
74531fed | 4802 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4803 | |
4804 | /* We're connected, but not running. Drop out before we | |
4805 | call start_remote. */ | |
e278ad5b | 4806 | rs->starting_up = 0; |
c35b1492 | 4807 | return; |
2d717e4f DJ |
4808 | } |
4809 | else | |
74531fed | 4810 | { |
74531fed | 4811 | /* Save the reply for later. */ |
8d64371b TT |
4812 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
4813 | strcpy (wait_status, rs->buf.data ()); | |
74531fed PA |
4814 | } |
4815 | ||
b7ea362b | 4816 | /* Fetch thread list. */ |
e8032dde | 4817 | target_update_thread_list (); |
b7ea362b | 4818 | |
74531fed PA |
4819 | /* Let the stub know that we want it to return the thread. */ |
4820 | set_continue_thread (minus_one_ptid); | |
4821 | ||
5b6d1e4f | 4822 | if (thread_count (this) == 0) |
b7ea362b PA |
4823 | { |
4824 | /* Target has no concept of threads at all. GDB treats | |
4825 | non-threaded target as single-threaded; add a main | |
4826 | thread. */ | |
64d38fdd JM |
4827 | thread_info *tp = add_current_inferior_and_thread (wait_status); |
4828 | get_remote_thread_info (tp)->set_resumed (); | |
b7ea362b PA |
4829 | } |
4830 | else | |
4831 | { | |
4832 | /* We have thread information; select the thread the target | |
4833 | says should be current. If we're reconnecting to a | |
4834 | multi-threaded program, this will ideally be the thread | |
4835 | that last reported an event before GDB disconnected. */ | |
75c6c844 PA |
4836 | ptid_t curr_thread = get_current_thread (wait_status); |
4837 | if (curr_thread == null_ptid) | |
b7ea362b PA |
4838 | { |
4839 | /* Odd... The target was able to list threads, but not | |
4840 | tell us which thread was current (no "thread" | |
4841 | register in T stop reply?). Just pick the first | |
4842 | thread in the thread list then. */ | |
2189c312 SM |
4843 | |
4844 | remote_debug_printf ("warning: couldn't determine remote " | |
4845 | "current thread; picking first in list."); | |
c9f35b34 | 4846 | |
5b6d1e4f PA |
4847 | for (thread_info *tp : all_non_exited_threads (this, |
4848 | minus_one_ptid)) | |
75c6c844 PA |
4849 | { |
4850 | switch_to_thread (tp); | |
4851 | break; | |
4852 | } | |
b7ea362b | 4853 | } |
75c6c844 | 4854 | else |
5b6d1e4f | 4855 | switch_to_thread (find_thread_ptid (this, curr_thread)); |
b7ea362b | 4856 | } |
74531fed | 4857 | |
6e586cc5 YQ |
4858 | /* init_wait_for_inferior should be called before get_offsets in order |
4859 | to manage `inserted' flag in bp loc in a correct state. | |
4860 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4861 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4862 | start_remote, set `inserted' flag to 1. In the initialization of | |
4863 | inferior, breakpoint_init_inferior should be called first, and then | |
4864 | breakpoint_re_set can be called. If this order is broken, state of | |
4865 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4866 | manipulation. */ | |
4867 | init_wait_for_inferior (); | |
4868 | ||
74531fed PA |
4869 | get_offsets (); /* Get text, data & bss offsets. */ |
4870 | ||
d962ef82 DJ |
4871 | /* If we could not find a description using qXfer, and we know |
4872 | how to do it some other way, try again. This is not | |
4873 | supported for non-stop; it could be, but it is tricky if | |
4874 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4875 | if (remote_read_description_p (this) |
f5656ead | 4876 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4877 | { |
4878 | target_clear_description (); | |
4879 | target_find_description (); | |
4880 | } | |
4881 | ||
74531fed PA |
4882 | /* Use the previously fetched status. */ |
4883 | gdb_assert (wait_status != NULL); | |
8d64371b | 4884 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
4885 | rs->cached_wait_status = 1; |
4886 | ||
f6ac5f3d | 4887 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4888 | } |
4889 | else | |
4890 | { | |
68c97600 PA |
4891 | /* Clear WFI global state. Do this before finding about new |
4892 | threads and inferiors, and setting the current inferior. | |
4893 | Otherwise we would clear the proceed status of the current | |
4894 | inferior when we want its stop_soon state to be preserved | |
4895 | (see notice_new_inferior). */ | |
4896 | init_wait_for_inferior (); | |
4897 | ||
74531fed PA |
4898 | /* In non-stop, we will either get an "OK", meaning that there |
4899 | are no stopped threads at this time; or, a regular stop | |
4900 | reply. In the latter case, there may be more than one thread | |
4901 | stopped --- we pull them all out using the vStopped | |
4902 | mechanism. */ | |
8d64371b | 4903 | if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 4904 | { |
722247f1 | 4905 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4906 | |
722247f1 YQ |
4907 | /* remote_notif_get_pending_replies acks this one, and gets |
4908 | the rest out. */ | |
f48ff2a7 | 4909 | rs->notif_state->pending_event[notif_client_stop.id] |
8d64371b | 4910 | = remote_notif_parse (this, notif, rs->buf.data ()); |
722247f1 | 4911 | remote_notif_get_pending_events (notif); |
74531fed | 4912 | } |
2d717e4f | 4913 | |
5b6d1e4f | 4914 | if (thread_count (this) == 0) |
74531fed | 4915 | { |
04bd08de | 4916 | if (!extended_p) |
74531fed | 4917 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4918 | |
c35b1492 PA |
4919 | /* We're connected, but not running. Drop out before we |
4920 | call start_remote. */ | |
e278ad5b | 4921 | rs->starting_up = 0; |
c35b1492 PA |
4922 | return; |
4923 | } | |
74531fed | 4924 | |
2455069d | 4925 | /* Report all signals during attach/startup. */ |
adc6a863 | 4926 | pass_signals ({}); |
221e1a37 PA |
4927 | |
4928 | /* If there are already stopped threads, mark them stopped and | |
4929 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4930 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4931 | |
4932 | if (target_can_async_p ()) | |
4933 | target_async (1); | |
74531fed | 4934 | } |
c8d104ad | 4935 | |
c8d104ad | 4936 | /* If we connected to a live target, do some additional setup. */ |
55f6301a | 4937 | if (target_has_execution ()) |
c8d104ad | 4938 | { |
a42d7dd8 TT |
4939 | /* No use without a symbol-file. */ |
4940 | if (current_program_space->symfile_object_file) | |
36d25514 | 4941 | remote_check_symbols (); |
c8d104ad | 4942 | } |
50c71eaf | 4943 | |
d5551862 SS |
4944 | /* Possibly the target has been engaged in a trace run started |
4945 | previously; find out where things are at. */ | |
f6ac5f3d | 4946 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 4947 | { |
00bf0b85 | 4948 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4949 | |
00bf0b85 SS |
4950 | if (current_trace_status ()->running) |
4951 | printf_filtered (_("Trace is already running on the target.\n")); | |
4952 | ||
f6ac5f3d | 4953 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
4954 | |
4955 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4956 | } |
4957 | ||
c0272db5 TW |
4958 | /* Possibly the target has been engaged in a btrace record started |
4959 | previously; find out where things are at. */ | |
4960 | remote_btrace_maybe_reopen (); | |
4961 | ||
1e51243a PA |
4962 | /* The thread and inferior lists are now synchronized with the |
4963 | target, our symbols have been relocated, and we're merged the | |
4964 | target's tracepoints with ours. We're done with basic start | |
4965 | up. */ | |
4966 | rs->starting_up = 0; | |
4967 | ||
a25a5a45 PA |
4968 | /* Maybe breakpoints are global and need to be inserted now. */ |
4969 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4970 | insert_breakpoints (); |
c906108c SS |
4971 | } |
4972 | ||
121b3efd PA |
4973 | const char * |
4974 | remote_target::connection_string () | |
4975 | { | |
4976 | remote_state *rs = get_remote_state (); | |
4977 | ||
4978 | if (rs->remote_desc->name != NULL) | |
4979 | return rs->remote_desc->name; | |
4980 | else | |
4981 | return NULL; | |
4982 | } | |
4983 | ||
c906108c SS |
4984 | /* Open a connection to a remote debugger. |
4985 | NAME is the filename used for communication. */ | |
4986 | ||
f6ac5f3d PA |
4987 | void |
4988 | remote_target::open (const char *name, int from_tty) | |
c906108c | 4989 | { |
f6ac5f3d | 4990 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
4991 | } |
4992 | ||
c906108c SS |
4993 | /* Open a connection to a remote debugger using the extended |
4994 | remote gdb protocol. NAME is the filename used for communication. */ | |
4995 | ||
f6ac5f3d PA |
4996 | void |
4997 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 4998 | { |
f6ac5f3d | 4999 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
5000 | } |
5001 | ||
ca4f7f8b PA |
5002 | /* Reset all packets back to "unknown support". Called when opening a |
5003 | new connection to a remote target. */ | |
c906108c | 5004 | |
d471ea57 | 5005 | static void |
ca4f7f8b | 5006 | reset_all_packet_configs_support (void) |
d471ea57 AC |
5007 | { |
5008 | int i; | |
a744cf53 | 5009 | |
444abaca | 5010 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 5011 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
5012 | } |
5013 | ||
ca4f7f8b PA |
5014 | /* Initialize all packet configs. */ |
5015 | ||
5016 | static void | |
5017 | init_all_packet_configs (void) | |
5018 | { | |
5019 | int i; | |
5020 | ||
5021 | for (i = 0; i < PACKET_MAX; i++) | |
5022 | { | |
5023 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
5024 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
5025 | } | |
5026 | } | |
5027 | ||
23860348 | 5028 | /* Symbol look-up. */ |
dc8acb97 | 5029 | |
6b8edb51 PA |
5030 | void |
5031 | remote_target::remote_check_symbols () | |
dc8acb97 | 5032 | { |
8d64371b | 5033 | char *tmp; |
dc8acb97 MS |
5034 | int end; |
5035 | ||
63154eca PA |
5036 | /* The remote side has no concept of inferiors that aren't running |
5037 | yet, it only knows about running processes. If we're connected | |
5038 | but our current inferior is not running, we should not invite the | |
5039 | remote target to request symbol lookups related to its | |
5040 | (unrelated) current process. */ | |
55f6301a | 5041 | if (!target_has_execution ()) |
63154eca PA |
5042 | return; |
5043 | ||
4082afcc | 5044 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
5045 | return; |
5046 | ||
63154eca PA |
5047 | /* Make sure the remote is pointing at the right process. Note |
5048 | there's no way to select "no process". */ | |
3c9c4b83 PA |
5049 | set_general_process (); |
5050 | ||
6d820c5c DJ |
5051 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
5052 | because we need both at the same time. */ | |
66644cd3 | 5053 | gdb::char_vector msg (get_remote_packet_size ()); |
8d64371b | 5054 | gdb::char_vector reply (get_remote_packet_size ()); |
6d820c5c | 5055 | |
23860348 | 5056 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
5057 | |
5058 | putpkt ("qSymbol::"); | |
8d64371b | 5059 | getpkt (&reply, 0); |
28170b88 | 5060 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); |
dc8acb97 | 5061 | |
8d64371b | 5062 | while (startswith (reply.data (), "qSymbol:")) |
dc8acb97 | 5063 | { |
77e371c0 TT |
5064 | struct bound_minimal_symbol sym; |
5065 | ||
dc8acb97 | 5066 | tmp = &reply[8]; |
66644cd3 AB |
5067 | end = hex2bin (tmp, reinterpret_cast <gdb_byte *> (msg.data ()), |
5068 | strlen (tmp) / 2); | |
dc8acb97 | 5069 | msg[end] = '\0'; |
66644cd3 | 5070 | sym = lookup_minimal_symbol (msg.data (), NULL, NULL); |
3b7344d5 | 5071 | if (sym.minsym == NULL) |
66644cd3 AB |
5072 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol::%s", |
5073 | &reply[8]); | |
dc8acb97 | 5074 | else |
2bbe3cc1 | 5075 | { |
f5656ead | 5076 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 5077 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
5078 | |
5079 | /* If this is a function address, return the start of code | |
5080 | instead of any data function descriptor. */ | |
f5656ead | 5081 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 | 5082 | sym_addr, |
8b88a78e | 5083 | current_top_target ()); |
2bbe3cc1 | 5084 | |
66644cd3 | 5085 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol:%s:%s", |
5af949e3 | 5086 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 | 5087 | } |
66644cd3 AB |
5088 | |
5089 | putpkt (msg.data ()); | |
8d64371b | 5090 | getpkt (&reply, 0); |
dc8acb97 MS |
5091 | } |
5092 | } | |
5093 | ||
9db8d71f | 5094 | static struct serial * |
baa336ce | 5095 | remote_serial_open (const char *name) |
9db8d71f DJ |
5096 | { |
5097 | static int udp_warning = 0; | |
5098 | ||
5099 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
5100 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
5101 | serial connection is reliable and not the serial connection promising | |
5102 | to be. */ | |
61012eef | 5103 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 5104 | { |
3e43a32a MS |
5105 | warning (_("The remote protocol may be unreliable over UDP.\n" |
5106 | "Some events may be lost, rendering further debugging " | |
5107 | "impossible.")); | |
9db8d71f DJ |
5108 | udp_warning = 1; |
5109 | } | |
5110 | ||
5111 | return serial_open (name); | |
5112 | } | |
5113 | ||
d914c394 SS |
5114 | /* Inform the target of our permission settings. The permission flags |
5115 | work without this, but if the target knows the settings, it can do | |
5116 | a couple things. First, it can add its own check, to catch cases | |
5117 | that somehow manage to get by the permissions checks in target | |
5118 | methods. Second, if the target is wired to disallow particular | |
5119 | settings (for instance, a system in the field that is not set up to | |
5120 | be able to stop at a breakpoint), it can object to any unavailable | |
5121 | permissions. */ | |
5122 | ||
5123 | void | |
f6ac5f3d | 5124 | remote_target::set_permissions () |
d914c394 SS |
5125 | { |
5126 | struct remote_state *rs = get_remote_state (); | |
5127 | ||
8d64371b | 5128 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAllow:" |
bba74b36 YQ |
5129 | "WriteReg:%x;WriteMem:%x;" |
5130 | "InsertBreak:%x;InsertTrace:%x;" | |
5131 | "InsertFastTrace:%x;Stop:%x", | |
5132 | may_write_registers, may_write_memory, | |
5133 | may_insert_breakpoints, may_insert_tracepoints, | |
5134 | may_insert_fast_tracepoints, may_stop); | |
d914c394 | 5135 | putpkt (rs->buf); |
8d64371b | 5136 | getpkt (&rs->buf, 0); |
d914c394 SS |
5137 | |
5138 | /* If the target didn't like the packet, warn the user. Do not try | |
5139 | to undo the user's settings, that would just be maddening. */ | |
8d64371b TT |
5140 | if (strcmp (rs->buf.data (), "OK") != 0) |
5141 | warning (_("Remote refused setting permissions with: %s"), | |
5142 | rs->buf.data ()); | |
d914c394 SS |
5143 | } |
5144 | ||
be2a5f71 DJ |
5145 | /* This type describes each known response to the qSupported |
5146 | packet. */ | |
5147 | struct protocol_feature | |
5148 | { | |
5149 | /* The name of this protocol feature. */ | |
5150 | const char *name; | |
5151 | ||
5152 | /* The default for this protocol feature. */ | |
5153 | enum packet_support default_support; | |
5154 | ||
5155 | /* The function to call when this feature is reported, or after | |
5156 | qSupported processing if the feature is not supported. | |
5157 | The first argument points to this structure. The second | |
5158 | argument indicates whether the packet requested support be | |
5159 | enabled, disabled, or probed (or the default, if this function | |
5160 | is being called at the end of processing and this feature was | |
5161 | not reported). The third argument may be NULL; if not NULL, it | |
5162 | is a NUL-terminated string taken from the packet following | |
5163 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5164 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5165 | enum packet_support, const char *); | |
be2a5f71 DJ |
5166 | |
5167 | /* The corresponding packet for this feature. Only used if | |
5168 | FUNC is remote_supported_packet. */ | |
5169 | int packet; | |
5170 | }; | |
5171 | ||
be2a5f71 | 5172 | static void |
6b8edb51 PA |
5173 | remote_supported_packet (remote_target *remote, |
5174 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5175 | enum packet_support support, |
5176 | const char *argument) | |
5177 | { | |
5178 | if (argument) | |
5179 | { | |
5180 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5181 | " \"%s\"."), feature->name); | |
5182 | return; | |
5183 | } | |
5184 | ||
4082afcc | 5185 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5186 | } |
be2a5f71 | 5187 | |
6b8edb51 PA |
5188 | void |
5189 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5190 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5191 | { |
5192 | struct remote_state *rs = get_remote_state (); | |
5193 | ||
5194 | int packet_size; | |
5195 | char *value_end; | |
5196 | ||
5197 | if (support != PACKET_ENABLE) | |
5198 | return; | |
5199 | ||
5200 | if (value == NULL || *value == '\0') | |
5201 | { | |
5202 | warning (_("Remote target reported \"%s\" without a size."), | |
5203 | feature->name); | |
5204 | return; | |
5205 | } | |
5206 | ||
5207 | errno = 0; | |
5208 | packet_size = strtol (value, &value_end, 16); | |
5209 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5210 | { | |
5211 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5212 | feature->name, value); | |
5213 | return; | |
5214 | } | |
5215 | ||
be2a5f71 DJ |
5216 | /* Record the new maximum packet size. */ |
5217 | rs->explicit_packet_size = packet_size; | |
5218 | } | |
5219 | ||
cb8c24b6 | 5220 | static void |
6b8edb51 PA |
5221 | remote_packet_size (remote_target *remote, const protocol_feature *feature, |
5222 | enum packet_support support, const char *value) | |
5223 | { | |
5224 | remote->remote_packet_size (feature, support, value); | |
5225 | } | |
5226 | ||
dc473cfb | 5227 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5228 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5229 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5230 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5231 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5232 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5233 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5234 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5235 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5236 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5237 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5238 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5239 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5240 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5241 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5242 | PACKET_qXfer_memory_map }, |
07e059b5 VP |
5243 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5244 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5245 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5246 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5247 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5248 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5249 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5250 | PACKET_QPassSignals }, | |
82075af2 JS |
5251 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5252 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5253 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5254 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5255 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5256 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5257 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5258 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5259 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5260 | PACKET_QEnvironmentHexEncoded }, | |
5261 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5262 | PACKET_QEnvironmentReset }, | |
5263 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5264 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5265 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5266 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5267 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5268 | PACKET_multiprocess_feature }, | |
5269 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5270 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5271 | PACKET_qXfer_siginfo_read }, | |
5272 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5273 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5274 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5275 | PACKET_ConditionalTracepoints }, |
4082afcc | 5276 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5277 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5278 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5279 | PACKET_BreakpointCommands }, |
4082afcc | 5280 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5281 | PACKET_FastTracepoints }, |
4082afcc | 5282 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5283 | PACKET_StaticTracepoints }, |
4082afcc | 5284 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5285 | PACKET_InstallInTrace}, |
4082afcc PA |
5286 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5287 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5288 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5289 | PACKET_bc }, | |
5290 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5291 | PACKET_bs }, | |
409873ef SS |
5292 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5293 | PACKET_TracepointSource }, | |
d914c394 SS |
5294 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5295 | PACKET_QAllow }, | |
4082afcc PA |
5296 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5297 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5298 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5299 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5300 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5301 | PACKET_qXfer_uib }, | |
03583c20 UW |
5302 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5303 | PACKET_QDisableRandomization }, | |
d1feda86 | 5304 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5305 | { "QTBuffer:size", PACKET_DISABLE, |
5306 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5307 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5308 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5309 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5310 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5311 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5312 | PACKET_qXfer_btrace }, |
5313 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5314 | PACKET_qXfer_btrace_conf }, |
5315 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5316 | PACKET_Qbtrace_conf_bts_size }, |
5317 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5318 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5319 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5320 | PACKET_fork_event_feature }, | |
5321 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5322 | PACKET_vfork_event_feature }, | |
94585166 DB |
5323 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5324 | PACKET_exec_event_feature }, | |
b20a6524 | 5325 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5326 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5327 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5328 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5329 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
2c2e7f87 LM |
5330 | { "memory-tagging", PACKET_DISABLE, remote_supported_packet, |
5331 | PACKET_memory_tagging_feature }, | |
be2a5f71 DJ |
5332 | }; |
5333 | ||
c8d5aac9 L |
5334 | static char *remote_support_xml; |
5335 | ||
5336 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5337 | ||
5338 | void | |
6e39997a | 5339 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5340 | { |
5341 | #if defined(HAVE_LIBEXPAT) | |
5342 | if (remote_support_xml == NULL) | |
c4f7c687 | 5343 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5344 | else |
5345 | { | |
5346 | char *copy = xstrdup (remote_support_xml + 13); | |
ca3a04f6 CB |
5347 | char *saveptr; |
5348 | char *p = strtok_r (copy, ",", &saveptr); | |
c8d5aac9 L |
5349 | |
5350 | do | |
5351 | { | |
5352 | if (strcmp (p, xml) == 0) | |
5353 | { | |
5354 | /* already there */ | |
5355 | xfree (copy); | |
5356 | return; | |
5357 | } | |
5358 | } | |
ca3a04f6 | 5359 | while ((p = strtok_r (NULL, ",", &saveptr)) != NULL); |
c8d5aac9 L |
5360 | xfree (copy); |
5361 | ||
94b0dee1 PA |
5362 | remote_support_xml = reconcat (remote_support_xml, |
5363 | remote_support_xml, ",", xml, | |
5364 | (char *) NULL); | |
c8d5aac9 L |
5365 | } |
5366 | #endif | |
5367 | } | |
5368 | ||
69b6ecb0 TT |
5369 | static void |
5370 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5371 | { |
69b6ecb0 TT |
5372 | if (!msg->empty ()) |
5373 | msg->append (";"); | |
5374 | msg->append (append); | |
c8d5aac9 L |
5375 | } |
5376 | ||
6b8edb51 PA |
5377 | void |
5378 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5379 | { |
5380 | struct remote_state *rs = get_remote_state (); | |
5381 | char *next; | |
5382 | int i; | |
5383 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5384 | ||
5385 | /* The packet support flags are handled differently for this packet | |
5386 | than for most others. We treat an error, a disabled packet, and | |
5387 | an empty response identically: any features which must be reported | |
5388 | to be used will be automatically disabled. An empty buffer | |
5389 | accomplishes this, since that is also the representation for a list | |
5390 | containing no features. */ | |
5391 | ||
5392 | rs->buf[0] = 0; | |
4082afcc | 5393 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5394 | { |
69b6ecb0 | 5395 | std::string q; |
c8d5aac9 | 5396 | |
73b8c1fd | 5397 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5398 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5399 | |
f7e6eed5 | 5400 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5401 | remote_query_supported_append (&q, "swbreak+"); |
f7e6eed5 | 5402 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5403 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5404 | |
69b6ecb0 | 5405 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5406 | |
8020350c DB |
5407 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
5408 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5409 | remote_query_supported_append (&q, "fork-events+"); |
8020350c DB |
5410 | if (packet_set_cmd_state (PACKET_vfork_event_feature) |
5411 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5412 | remote_query_supported_append (&q, "vfork-events+"); |
8020350c DB |
5413 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
5414 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5415 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5416 | |
750ce8d1 | 5417 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5418 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5419 | |
65706a29 | 5420 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5421 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5422 | |
f2faf941 | 5423 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5424 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5425 | |
2c2e7f87 LM |
5426 | if (packet_set_cmd_state (PACKET_memory_tagging_feature) |
5427 | != AUTO_BOOLEAN_FALSE) | |
5428 | remote_query_supported_append (&q, "memory-tagging+"); | |
5429 | ||
b35d5edb PA |
5430 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5431 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5432 | if (remote_support_xml != NULL |
5433 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
69b6ecb0 | 5434 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5435 | |
69b6ecb0 TT |
5436 | q = "qSupported:" + q; |
5437 | putpkt (q.c_str ()); | |
94b0dee1 | 5438 | |
8d64371b | 5439 | getpkt (&rs->buf, 0); |
be2a5f71 DJ |
5440 | |
5441 | /* If an error occured, warn, but do not return - just reset the | |
5442 | buffer to empty and go on to disable features. */ | |
5443 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5444 | == PACKET_ERROR) | |
5445 | { | |
8d64371b | 5446 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
be2a5f71 DJ |
5447 | rs->buf[0] = 0; |
5448 | } | |
5449 | } | |
5450 | ||
5451 | memset (seen, 0, sizeof (seen)); | |
5452 | ||
8d64371b | 5453 | next = rs->buf.data (); |
be2a5f71 DJ |
5454 | while (*next) |
5455 | { | |
5456 | enum packet_support is_supported; | |
5457 | char *p, *end, *name_end, *value; | |
5458 | ||
5459 | /* First separate out this item from the rest of the packet. If | |
5460 | there's another item after this, we overwrite the separator | |
5461 | (terminated strings are much easier to work with). */ | |
5462 | p = next; | |
5463 | end = strchr (p, ';'); | |
5464 | if (end == NULL) | |
5465 | { | |
5466 | end = p + strlen (p); | |
5467 | next = end; | |
5468 | } | |
5469 | else | |
5470 | { | |
89be2091 DJ |
5471 | *end = '\0'; |
5472 | next = end + 1; | |
5473 | ||
be2a5f71 DJ |
5474 | if (end == p) |
5475 | { | |
5476 | warning (_("empty item in \"qSupported\" response")); | |
5477 | continue; | |
5478 | } | |
be2a5f71 DJ |
5479 | } |
5480 | ||
5481 | name_end = strchr (p, '='); | |
5482 | if (name_end) | |
5483 | { | |
5484 | /* This is a name=value entry. */ | |
5485 | is_supported = PACKET_ENABLE; | |
5486 | value = name_end + 1; | |
5487 | *name_end = '\0'; | |
5488 | } | |
5489 | else | |
5490 | { | |
5491 | value = NULL; | |
5492 | switch (end[-1]) | |
5493 | { | |
5494 | case '+': | |
5495 | is_supported = PACKET_ENABLE; | |
5496 | break; | |
5497 | ||
5498 | case '-': | |
5499 | is_supported = PACKET_DISABLE; | |
5500 | break; | |
5501 | ||
5502 | case '?': | |
5503 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5504 | break; | |
5505 | ||
5506 | default: | |
3e43a32a MS |
5507 | warning (_("unrecognized item \"%s\" " |
5508 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5509 | continue; |
5510 | } | |
5511 | end[-1] = '\0'; | |
5512 | } | |
5513 | ||
5514 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5515 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5516 | { | |
5517 | const struct protocol_feature *feature; | |
5518 | ||
5519 | seen[i] = 1; | |
5520 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5521 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5522 | break; |
5523 | } | |
5524 | } | |
5525 | ||
5526 | /* If we increased the packet size, make sure to increase the global | |
5527 | buffer size also. We delay this until after parsing the entire | |
5528 | qSupported packet, because this is the same buffer we were | |
5529 | parsing. */ | |
8d64371b TT |
5530 | if (rs->buf.size () < rs->explicit_packet_size) |
5531 | rs->buf.resize (rs->explicit_packet_size); | |
be2a5f71 DJ |
5532 | |
5533 | /* Handle the defaults for unmentioned features. */ | |
5534 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5535 | if (!seen[i]) | |
5536 | { | |
5537 | const struct protocol_feature *feature; | |
5538 | ||
5539 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5540 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5541 | } |
5542 | } | |
5543 | ||
048094ac PA |
5544 | /* Serial QUIT handler for the remote serial descriptor. |
5545 | ||
5546 | Defers handling a Ctrl-C until we're done with the current | |
5547 | command/response packet sequence, unless: | |
5548 | ||
5549 | - We're setting up the connection. Don't send a remote interrupt | |
5550 | request, as we're not fully synced yet. Quit immediately | |
5551 | instead. | |
5552 | ||
5553 | - The target has been resumed in the foreground | |
223ffa71 | 5554 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5555 | packet, and we're blocked waiting for the stop reply, thus a |
5556 | Ctrl-C should be immediately sent to the target. | |
5557 | ||
5558 | - We get a second Ctrl-C while still within the same serial read or | |
5559 | write. In that case the serial is seemingly wedged --- offer to | |
5560 | quit/disconnect. | |
5561 | ||
5562 | - We see a second Ctrl-C without target response, after having | |
5563 | previously interrupted the target. In that case the target/stub | |
5564 | is probably wedged --- offer to quit/disconnect. | |
5565 | */ | |
5566 | ||
6b8edb51 PA |
5567 | void |
5568 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5569 | { |
5570 | struct remote_state *rs = get_remote_state (); | |
5571 | ||
5572 | if (check_quit_flag ()) | |
5573 | { | |
5574 | /* If we're starting up, we're not fully synced yet. Quit | |
5575 | immediately. */ | |
5576 | if (rs->starting_up) | |
5577 | quit (); | |
5578 | else if (rs->got_ctrlc_during_io) | |
5579 | { | |
5580 | if (query (_("The target is not responding to GDB commands.\n" | |
5581 | "Stop debugging it? "))) | |
5b6d1e4f | 5582 | remote_unpush_and_throw (this); |
048094ac PA |
5583 | } |
5584 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5585 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5586 | interrupt_query (); |
5587 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5588 | an interrupt request. */ | |
223ffa71 | 5589 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5590 | target_interrupt (); |
048094ac PA |
5591 | else |
5592 | rs->got_ctrlc_during_io = 1; | |
5593 | } | |
5594 | } | |
5595 | ||
6b8edb51 PA |
5596 | /* The remote_target that is current while the quit handler is |
5597 | overridden with remote_serial_quit_handler. */ | |
5598 | static remote_target *curr_quit_handler_target; | |
5599 | ||
5600 | static void | |
5601 | remote_serial_quit_handler () | |
5602 | { | |
5603 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5604 | } | |
5605 | ||
5b6d1e4f PA |
5606 | /* Remove the remote target from the target stack of each inferior |
5607 | that is using it. Upper targets depend on it so remove them | |
5608 | first. */ | |
78a095c3 JK |
5609 | |
5610 | static void | |
5b6d1e4f | 5611 | remote_unpush_target (remote_target *target) |
78a095c3 | 5612 | { |
5b6d1e4f PA |
5613 | /* We have to unpush the target from all inferiors, even those that |
5614 | aren't running. */ | |
5615 | scoped_restore_current_inferior restore_current_inferior; | |
5616 | ||
5617 | for (inferior *inf : all_inferiors (target)) | |
5618 | { | |
5619 | switch_to_inferior_no_thread (inf); | |
5620 | pop_all_targets_at_and_above (process_stratum); | |
5621 | generic_mourn_inferior (); | |
5622 | } | |
78a095c3 | 5623 | } |
be2a5f71 | 5624 | |
048094ac | 5625 | static void |
5b6d1e4f | 5626 | remote_unpush_and_throw (remote_target *target) |
048094ac | 5627 | { |
5b6d1e4f | 5628 | remote_unpush_target (target); |
048094ac PA |
5629 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
5630 | } | |
5631 | ||
f6ac5f3d PA |
5632 | void |
5633 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5634 | { |
6b8edb51 | 5635 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5636 | |
c906108c | 5637 | if (name == 0) |
8a3fe4f8 | 5638 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5639 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5640 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5641 | |
2d717e4f | 5642 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5643 | Ask this question first, before target_preopen has a chance to kill |
5644 | anything. */ | |
55f6301a | 5645 | if (curr_remote != NULL && !target_has_execution ()) |
2d717e4f | 5646 | { |
78a095c3 JK |
5647 | if (from_tty |
5648 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5649 | error (_("Still connected.")); |
5650 | } | |
5651 | ||
78a095c3 | 5652 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5653 | target_preopen (from_tty); |
5654 | ||
ad9a8f3f | 5655 | remote_fileio_reset (); |
1dd41f16 NS |
5656 | reopen_exec_file (); |
5657 | reread_symbols (); | |
5658 | ||
6b8edb51 PA |
5659 | remote_target *remote |
5660 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5661 | target_ops_up target_holder (remote); | |
5662 | ||
5663 | remote_state *rs = remote->get_remote_state (); | |
5664 | ||
5665 | /* See FIXME above. */ | |
5666 | if (!target_async_permitted) | |
5667 | rs->wait_forever_enabled_p = 1; | |
5668 | ||
5d93a237 TT |
5669 | rs->remote_desc = remote_serial_open (name); |
5670 | if (!rs->remote_desc) | |
c906108c SS |
5671 | perror_with_name (name); |
5672 | ||
5673 | if (baud_rate != -1) | |
5674 | { | |
5d93a237 | 5675 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5676 | { |
9b74d5d3 KB |
5677 | /* The requested speed could not be set. Error out to |
5678 | top level after closing remote_desc. Take care to | |
5679 | set remote_desc to NULL to avoid closing remote_desc | |
5680 | more than once. */ | |
5d93a237 TT |
5681 | serial_close (rs->remote_desc); |
5682 | rs->remote_desc = NULL; | |
c906108c SS |
5683 | perror_with_name (name); |
5684 | } | |
5685 | } | |
5686 | ||
236af5e3 | 5687 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5688 | serial_raw (rs->remote_desc); |
c906108c SS |
5689 | |
5690 | /* If there is something sitting in the buffer we might take it as a | |
5691 | response to a command, which would be bad. */ | |
5d93a237 | 5692 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5693 | |
5694 | if (from_tty) | |
5695 | { | |
5696 | puts_filtered ("Remote debugging using "); | |
5697 | puts_filtered (name); | |
5698 | puts_filtered ("\n"); | |
5699 | } | |
d9f719f1 | 5700 | |
6b8edb51 | 5701 | /* Switch to using the remote target now. */ |
02980c56 | 5702 | current_inferior ()->push_target (std::move (target_holder)); |
c906108c | 5703 | |
74531fed | 5704 | /* Register extra event sources in the event loop. */ |
6b8edb51 | 5705 | rs->remote_async_inferior_event_token |
baa8575b | 5706 | = create_async_event_handler (remote_async_inferior_event_handler, nullptr, |
db20ebdf | 5707 | "remote"); |
6b8edb51 | 5708 | rs->notif_state = remote_notif_state_allocate (remote); |
74531fed | 5709 | |
be2a5f71 DJ |
5710 | /* Reset the target state; these things will be queried either by |
5711 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5712 | reset_all_packet_configs_support (); |
74531fed | 5713 | rs->cached_wait_status = 0; |
be2a5f71 | 5714 | rs->explicit_packet_size = 0; |
a6f3e723 | 5715 | rs->noack_mode = 0; |
82f73884 | 5716 | rs->extended = extended_p; |
e24a49d8 | 5717 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5718 | rs->ctrlc_pending_p = 0; |
048094ac | 5719 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5720 | |
47f8a51d TT |
5721 | rs->general_thread = not_sent_ptid; |
5722 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5723 | rs->remote_traceframe_number = -1; |
c906108c | 5724 | |
3a00c802 PA |
5725 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5726 | ||
9d1f7ab2 | 5727 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5728 | rs->use_threadinfo_query = 1; |
5729 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5730 | |
dd194f6b | 5731 | rs->readahead_cache.invalidate (); |
80152258 | 5732 | |
c6ebd6cf | 5733 | if (target_async_permitted) |
92d1e331 | 5734 | { |
92d1e331 DJ |
5735 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5736 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5737 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5738 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5739 | around this. Eventually a mechanism that allows |
92d1e331 | 5740 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5741 | implemented. */ |
6b8edb51 | 5742 | rs->wait_forever_enabled_p = 0; |
92d1e331 DJ |
5743 | } |
5744 | ||
23860348 | 5745 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5746 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5747 | |
36918e70 | 5748 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5749 | target (we'd otherwise be in an inconsistent state) and then |
5750 | propogate the error on up the exception chain. This ensures that | |
5751 | the caller doesn't stumble along blindly assuming that the | |
5752 | function succeeded. The CLI doesn't have this problem but other | |
5753 | UI's, such as MI do. | |
36918e70 AC |
5754 | |
5755 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5756 | this function should return an error indication letting the | |
ce2826aa | 5757 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5758 | ``target remote'' is directly wired to this function making that |
5759 | impossible. On a positive note, the CLI side of this problem has | |
5760 | been fixed - the function set_cmd_context() makes it possible for | |
5761 | all the ``target ....'' commands to share a common callback | |
5762 | function. See cli-dump.c. */ | |
109c3e39 | 5763 | { |
2d717e4f | 5764 | |
a70b8144 | 5765 | try |
04bd08de | 5766 | { |
6b8edb51 | 5767 | remote->start_remote (from_tty, extended_p); |
04bd08de | 5768 | } |
230d2906 | 5769 | catch (const gdb_exception &ex) |
109c3e39 | 5770 | { |
c8d104ad PA |
5771 | /* Pop the partially set up target - unless something else did |
5772 | already before throwing the exception. */ | |
6b8edb51 | 5773 | if (ex.error != TARGET_CLOSE_ERROR) |
5b6d1e4f | 5774 | remote_unpush_target (remote); |
eedc3f4f | 5775 | throw; |
109c3e39 AC |
5776 | } |
5777 | } | |
c906108c | 5778 | |
6b8edb51 | 5779 | remote_btrace_reset (rs); |
f4abbc16 | 5780 | |
c6ebd6cf | 5781 | if (target_async_permitted) |
6b8edb51 | 5782 | rs->wait_forever_enabled_p = 1; |
43ff13b4 JM |
5783 | } |
5784 | ||
de0d863e DB |
5785 | /* Detach the specified process. */ |
5786 | ||
6b8edb51 PA |
5787 | void |
5788 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
5789 | { |
5790 | struct remote_state *rs = get_remote_state (); | |
5791 | ||
4c7333b3 PA |
5792 | /* This should not be necessary, but the handling for D;PID in |
5793 | GDBserver versions prior to 8.2 incorrectly assumes that the | |
5794 | selected process points to the same process we're detaching, | |
5795 | leading to misbehavior (and possibly GDBserver crashing) when it | |
5796 | does not. Since it's easy and cheap, work around it by forcing | |
5797 | GDBserver to select GDB's current process. */ | |
5798 | set_general_process (); | |
5799 | ||
de0d863e | 5800 | if (remote_multi_process_p (rs)) |
8d64371b | 5801 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "D;%x", pid); |
de0d863e | 5802 | else |
8d64371b | 5803 | strcpy (rs->buf.data (), "D"); |
de0d863e DB |
5804 | |
5805 | putpkt (rs->buf); | |
8d64371b | 5806 | getpkt (&rs->buf, 0); |
de0d863e DB |
5807 | |
5808 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5809 | ; | |
5810 | else if (rs->buf[0] == '\0') | |
5811 | error (_("Remote doesn't know how to detach")); | |
5812 | else | |
5813 | error (_("Can't detach process.")); | |
5814 | } | |
5815 | ||
5816 | /* This detaches a program to which we previously attached, using | |
5817 | inferior_ptid to identify the process. After this is done, GDB | |
5818 | can be used to debug some other program. We better not have left | |
5819 | any breakpoints in the target program or it'll die when it hits | |
5820 | one. */ | |
c906108c | 5821 | |
6b8edb51 | 5822 | void |
00431a78 | 5823 | remote_target::remote_detach_1 (inferior *inf, int from_tty) |
c906108c | 5824 | { |
e99b03dc | 5825 | int pid = inferior_ptid.pid (); |
d01949b6 | 5826 | struct remote_state *rs = get_remote_state (); |
de0d863e | 5827 | int is_fork_parent; |
c906108c | 5828 | |
55f6301a | 5829 | if (!target_has_execution ()) |
2d717e4f DJ |
5830 | error (_("No process to detach from.")); |
5831 | ||
0f48b757 | 5832 | target_announce_detach (from_tty); |
7cee1e54 | 5833 | |
e87f0fe8 PA |
5834 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) |
5835 | { | |
5836 | /* If we're in breakpoints-always-inserted mode, or the inferior | |
5837 | is running, we have to remove breakpoints before detaching. | |
5838 | We don't do this in common code instead because not all | |
5839 | targets support removing breakpoints while the target is | |
5840 | running. The remote target / gdbserver does, though. */ | |
5841 | remove_breakpoints_inf (current_inferior ()); | |
5842 | } | |
5843 | ||
c906108c | 5844 | /* Tell the remote target to detach. */ |
de0d863e | 5845 | remote_detach_pid (pid); |
82f73884 | 5846 | |
8020350c | 5847 | /* Exit only if this is the only active inferior. */ |
5b6d1e4f | 5848 | if (from_tty && !rs->extended && number_of_live_inferiors (this) == 1) |
7cee1e54 | 5849 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5850 | |
5b6d1e4f | 5851 | thread_info *tp = find_thread_ptid (this, inferior_ptid); |
00431a78 | 5852 | |
de0d863e DB |
5853 | /* Check to see if we are detaching a fork parent. Note that if we |
5854 | are detaching a fork child, tp == NULL. */ | |
5855 | is_fork_parent = (tp != NULL | |
5856 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5857 | ||
5858 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5859 | breakpoints that should be available for the followed inferior. */ | |
5860 | if (!is_fork_parent) | |
f67c0c91 | 5861 | { |
249b5733 PA |
5862 | /* Save the pid as a string before mourning, since that will |
5863 | unpush the remote target, and we need the string after. */ | |
f2907e49 | 5864 | std::string infpid = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
5865 | |
5866 | target_mourn_inferior (inferior_ptid); | |
5867 | if (print_inferior_events) | |
5868 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
5869 | inf->num, infpid.c_str ()); | |
5870 | } | |
de0d863e DB |
5871 | else |
5872 | { | |
0ac55310 | 5873 | switch_to_no_thread (); |
00431a78 | 5874 | detach_inferior (current_inferior ()); |
de0d863e | 5875 | } |
2d717e4f DJ |
5876 | } |
5877 | ||
f6ac5f3d PA |
5878 | void |
5879 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5880 | { |
00431a78 | 5881 | remote_detach_1 (inf, from_tty); |
2d717e4f DJ |
5882 | } |
5883 | ||
f6ac5f3d PA |
5884 | void |
5885 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5886 | { |
00431a78 | 5887 | remote_detach_1 (inf, from_tty); |
de0d863e DB |
5888 | } |
5889 | ||
5890 | /* Target follow-fork function for remote targets. On entry, and | |
5891 | at return, the current inferior is the fork parent. | |
5892 | ||
5893 | Note that although this is currently only used for extended-remote, | |
5894 | it is named remote_follow_fork in anticipation of using it for the | |
5895 | remote target as well. */ | |
5896 | ||
5ab2fbf1 SM |
5897 | bool |
5898 | remote_target::follow_fork (bool follow_child, bool detach_fork) | |
de0d863e DB |
5899 | { |
5900 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5901 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5902 | |
c269dbdb DB |
5903 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5904 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5905 | { |
5906 | /* When following the parent and detaching the child, we detach | |
5907 | the child here. For the case of following the child and | |
5908 | detaching the parent, the detach is done in the target- | |
5909 | independent follow fork code in infrun.c. We can't use | |
5910 | target_detach when detaching an unfollowed child because | |
5911 | the client side doesn't know anything about the child. */ | |
5912 | if (detach_fork && !follow_child) | |
5913 | { | |
5914 | /* Detach the fork child. */ | |
5915 | ptid_t child_ptid; | |
5916 | pid_t child_pid; | |
5917 | ||
5918 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
e99b03dc | 5919 | child_pid = child_ptid.pid (); |
de0d863e DB |
5920 | |
5921 | remote_detach_pid (child_pid); | |
de0d863e DB |
5922 | } |
5923 | } | |
5ab2fbf1 SM |
5924 | |
5925 | return false; | |
c906108c SS |
5926 | } |
5927 | ||
94585166 DB |
5928 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5929 | in the program space of the new inferior. On entry and at return the | |
5930 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5931 | inferior, which may be the same as the exec'ing inferior unless | |
5932 | follow-exec-mode is "new". */ | |
5933 | ||
f6ac5f3d | 5934 | void |
4ca51187 | 5935 | remote_target::follow_exec (struct inferior *inf, const char *execd_pathname) |
94585166 DB |
5936 | { |
5937 | /* We know that this is a target file name, so if it has the "target:" | |
5938 | prefix we strip it off before saving it in the program space. */ | |
5939 | if (is_target_filename (execd_pathname)) | |
5940 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5941 | ||
5942 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5943 | } | |
5944 | ||
6ad8ae5c DJ |
5945 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5946 | ||
f6ac5f3d PA |
5947 | void |
5948 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 5949 | { |
43ff13b4 | 5950 | if (args) |
2d717e4f | 5951 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5952 | |
8020350c | 5953 | /* Make sure we unpush even the extended remote targets. Calling |
5b6d1e4f PA |
5954 | target_mourn_inferior won't unpush, and |
5955 | remote_target::mourn_inferior won't unpush if there is more than | |
5956 | one inferior left. */ | |
5957 | remote_unpush_target (this); | |
2d717e4f | 5958 | |
43ff13b4 JM |
5959 | if (from_tty) |
5960 | puts_filtered ("Ending remote debugging.\n"); | |
5961 | } | |
5962 | ||
2d717e4f DJ |
5963 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5964 | be chatty about it. */ | |
5965 | ||
f6ac5f3d PA |
5966 | void |
5967 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
5968 | { |
5969 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5970 | int pid; |
96ef3384 | 5971 | char *wait_status = NULL; |
2d717e4f | 5972 | |
74164c56 | 5973 | pid = parse_pid_to_attach (args); |
2d717e4f | 5974 | |
74164c56 JK |
5975 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5976 | way as in other targets. */ | |
2d717e4f | 5977 | |
4082afcc | 5978 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5979 | error (_("This target does not support attaching to a process")); |
5980 | ||
7cee1e54 PA |
5981 | if (from_tty) |
5982 | { | |
d9fa87f4 | 5983 | const char *exec_file = get_exec_file (0); |
7cee1e54 PA |
5984 | |
5985 | if (exec_file) | |
5986 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
a068643d | 5987 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
5988 | else |
5989 | printf_unfiltered (_("Attaching to %s\n"), | |
a068643d | 5990 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
5991 | } |
5992 | ||
8d64371b | 5993 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f | 5994 | putpkt (rs->buf); |
8d64371b | 5995 | getpkt (&rs->buf, 0); |
2d717e4f | 5996 | |
4082afcc PA |
5997 | switch (packet_ok (rs->buf, |
5998 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5999 | { |
4082afcc | 6000 | case PACKET_OK: |
6efcd9a8 | 6001 | if (!target_is_non_stop_p ()) |
74531fed PA |
6002 | { |
6003 | /* Save the reply for later. */ | |
8d64371b TT |
6004 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
6005 | strcpy (wait_status, rs->buf.data ()); | |
74531fed | 6006 | } |
8d64371b | 6007 | else if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 6008 | error (_("Attaching to %s failed with: %s"), |
a068643d | 6009 | target_pid_to_str (ptid_t (pid)).c_str (), |
8d64371b | 6010 | rs->buf.data ()); |
4082afcc PA |
6011 | break; |
6012 | case PACKET_UNKNOWN: | |
6013 | error (_("This target does not support attaching to a process")); | |
6014 | default: | |
50fa3001 SDJ |
6015 | error (_("Attaching to %s failed"), |
6016 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
2d717e4f | 6017 | } |
2d717e4f | 6018 | |
0ac55310 | 6019 | switch_to_inferior_no_thread (remote_add_inferior (false, pid, 1, 0)); |
bad34192 | 6020 | |
f2907e49 | 6021 | inferior_ptid = ptid_t (pid); |
79d7f229 | 6022 | |
6efcd9a8 | 6023 | if (target_is_non_stop_p ()) |
bad34192 | 6024 | { |
bad34192 | 6025 | /* Get list of threads. */ |
f6ac5f3d | 6026 | update_thread_list (); |
82f73884 | 6027 | |
0ac55310 PA |
6028 | thread_info *thread = first_thread_of_inferior (current_inferior ()); |
6029 | if (thread != nullptr) | |
6030 | switch_to_thread (thread); | |
bad34192 PA |
6031 | |
6032 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 6033 | record_currthread (rs, minus_one_ptid); |
bad34192 | 6034 | } |
74531fed | 6035 | else |
bad34192 | 6036 | { |
0ac55310 PA |
6037 | /* Now, if we have thread information, update the main thread's |
6038 | ptid. */ | |
6039 | ptid_t curr_ptid = remote_current_thread (ptid_t (pid)); | |
bad34192 PA |
6040 | |
6041 | /* Add the main thread to the thread list. */ | |
0ac55310 PA |
6042 | thread_info *thr = add_thread_silent (this, curr_ptid); |
6043 | ||
6044 | switch_to_thread (thr); | |
6045 | ||
00aecdcf PA |
6046 | /* Don't consider the thread stopped until we've processed the |
6047 | saved stop reply. */ | |
5b6d1e4f | 6048 | set_executing (this, thr->ptid, true); |
bad34192 | 6049 | } |
c0a2216e | 6050 | |
96ef3384 UW |
6051 | /* Next, if the target can specify a description, read it. We do |
6052 | this before anything involving memory or registers. */ | |
6053 | target_find_description (); | |
6054 | ||
6efcd9a8 | 6055 | if (!target_is_non_stop_p ()) |
74531fed PA |
6056 | { |
6057 | /* Use the previously fetched status. */ | |
6058 | gdb_assert (wait_status != NULL); | |
6059 | ||
6060 | if (target_can_async_p ()) | |
6061 | { | |
722247f1 | 6062 | struct notif_event *reply |
6b8edb51 | 6063 | = remote_notif_parse (this, ¬if_client_stop, wait_status); |
74531fed | 6064 | |
722247f1 | 6065 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 6066 | |
6a3753b3 | 6067 | target_async (1); |
74531fed PA |
6068 | } |
6069 | else | |
6070 | { | |
6071 | gdb_assert (wait_status != NULL); | |
8d64371b | 6072 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
6073 | rs->cached_wait_status = 1; |
6074 | } | |
6075 | } | |
6076 | else | |
621cc310 PA |
6077 | { |
6078 | gdb_assert (wait_status == NULL); | |
6079 | ||
6080 | gdb_assert (target_can_async_p ()); | |
6081 | target_async (1); | |
6082 | } | |
2d717e4f DJ |
6083 | } |
6084 | ||
b9c1d481 AS |
6085 | /* Implementation of the to_post_attach method. */ |
6086 | ||
f6ac5f3d PA |
6087 | void |
6088 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 6089 | { |
6efcd9a8 PA |
6090 | /* Get text, data & bss offsets. */ |
6091 | get_offsets (); | |
6092 | ||
b9c1d481 AS |
6093 | /* In certain cases GDB might not have had the chance to start |
6094 | symbol lookup up until now. This could happen if the debugged | |
6095 | binary is not using shared libraries, the vsyscall page is not | |
6096 | present (on Linux) and the binary itself hadn't changed since the | |
6097 | debugging process was started. */ | |
a42d7dd8 | 6098 | if (current_program_space->symfile_object_file != NULL) |
b9c1d481 AS |
6099 | remote_check_symbols(); |
6100 | } | |
6101 | ||
c906108c | 6102 | \f |
506fb367 DJ |
6103 | /* Check for the availability of vCont. This function should also check |
6104 | the response. */ | |
c906108c | 6105 | |
6b8edb51 PA |
6106 | void |
6107 | remote_target::remote_vcont_probe () | |
c906108c | 6108 | { |
6b8edb51 | 6109 | remote_state *rs = get_remote_state (); |
2e9f7625 | 6110 | char *buf; |
6d820c5c | 6111 | |
8d64371b | 6112 | strcpy (rs->buf.data (), "vCont?"); |
2e9f7625 | 6113 | putpkt (rs->buf); |
8d64371b TT |
6114 | getpkt (&rs->buf, 0); |
6115 | buf = rs->buf.data (); | |
c906108c | 6116 | |
506fb367 | 6117 | /* Make sure that the features we assume are supported. */ |
61012eef | 6118 | if (startswith (buf, "vCont")) |
506fb367 DJ |
6119 | { |
6120 | char *p = &buf[5]; | |
750ce8d1 | 6121 | int support_c, support_C; |
506fb367 | 6122 | |
750ce8d1 YQ |
6123 | rs->supports_vCont.s = 0; |
6124 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
6125 | support_c = 0; |
6126 | support_C = 0; | |
d458bd84 | 6127 | rs->supports_vCont.t = 0; |
c1e36e3e | 6128 | rs->supports_vCont.r = 0; |
506fb367 DJ |
6129 | while (p && *p == ';') |
6130 | { | |
6131 | p++; | |
6132 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 6133 | rs->supports_vCont.s = 1; |
506fb367 | 6134 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 6135 | rs->supports_vCont.S = 1; |
506fb367 DJ |
6136 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6137 | support_c = 1; | |
6138 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
6139 | support_C = 1; | |
74531fed | 6140 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 6141 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
6142 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6143 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
6144 | |
6145 | p = strchr (p, ';'); | |
6146 | } | |
c906108c | 6147 | |
750ce8d1 YQ |
6148 | /* If c, and C are not all supported, we can't use vCont. Clearing |
6149 | BUF will make packet_ok disable the packet. */ | |
6150 | if (!support_c || !support_C) | |
506fb367 DJ |
6151 | buf[0] = 0; |
6152 | } | |
c906108c | 6153 | |
8d64371b | 6154 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCont]); |
5b6d1e4f | 6155 | rs->supports_vCont_probed = true; |
506fb367 | 6156 | } |
c906108c | 6157 | |
0d8f58ca PA |
6158 | /* Helper function for building "vCont" resumptions. Write a |
6159 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
6160 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
6161 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
6162 | resumed thread should be single-stepped and/or signalled. If PTID | |
6163 | equals minus_one_ptid, then all threads are resumed; if PTID | |
6164 | represents a process, then all threads of the process are resumed; | |
6165 | the thread to be stepped and/or signalled is given in the global | |
6166 | INFERIOR_PTID. */ | |
6167 | ||
6b8edb51 PA |
6168 | char * |
6169 | remote_target::append_resumption (char *p, char *endp, | |
6170 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
6171 | { |
6172 | struct remote_state *rs = get_remote_state (); | |
6173 | ||
a493e3e2 | 6174 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 6175 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
6176 | else if (step |
6177 | /* GDB is willing to range step. */ | |
6178 | && use_range_stepping | |
6179 | /* Target supports range stepping. */ | |
6180 | && rs->supports_vCont.r | |
6181 | /* We don't currently support range stepping multiple | |
6182 | threads with a wildcard (though the protocol allows it, | |
6183 | so stubs shouldn't make an active effort to forbid | |
6184 | it). */ | |
0e998d96 | 6185 | && !(remote_multi_process_p (rs) && ptid.is_pid ())) |
c1e36e3e PA |
6186 | { |
6187 | struct thread_info *tp; | |
6188 | ||
d7e15655 | 6189 | if (ptid == minus_one_ptid) |
c1e36e3e PA |
6190 | { |
6191 | /* If we don't know about the target thread's tid, then | |
6192 | we're resuming magic_null_ptid (see caller). */ | |
5b6d1e4f | 6193 | tp = find_thread_ptid (this, magic_null_ptid); |
c1e36e3e PA |
6194 | } |
6195 | else | |
5b6d1e4f | 6196 | tp = find_thread_ptid (this, ptid); |
c1e36e3e PA |
6197 | gdb_assert (tp != NULL); |
6198 | ||
6199 | if (tp->control.may_range_step) | |
6200 | { | |
6201 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
6202 | ||
6203 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6204 | phex_nz (tp->control.step_range_start, | |
6205 | addr_size), | |
6206 | phex_nz (tp->control.step_range_end, | |
6207 | addr_size)); | |
6208 | } | |
6209 | else | |
6210 | p += xsnprintf (p, endp - p, ";s"); | |
6211 | } | |
0d8f58ca PA |
6212 | else if (step) |
6213 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6214 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6215 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6216 | else | |
6217 | p += xsnprintf (p, endp - p, ";c"); | |
6218 | ||
0e998d96 | 6219 | if (remote_multi_process_p (rs) && ptid.is_pid ()) |
0d8f58ca PA |
6220 | { |
6221 | ptid_t nptid; | |
6222 | ||
6223 | /* All (-1) threads of process. */ | |
e99b03dc | 6224 | nptid = ptid_t (ptid.pid (), -1, 0); |
0d8f58ca PA |
6225 | |
6226 | p += xsnprintf (p, endp - p, ":"); | |
6227 | p = write_ptid (p, endp, nptid); | |
6228 | } | |
d7e15655 | 6229 | else if (ptid != minus_one_ptid) |
0d8f58ca PA |
6230 | { |
6231 | p += xsnprintf (p, endp - p, ":"); | |
6232 | p = write_ptid (p, endp, ptid); | |
6233 | } | |
6234 | ||
6235 | return p; | |
6236 | } | |
6237 | ||
799a2abe PA |
6238 | /* Clear the thread's private info on resume. */ |
6239 | ||
6240 | static void | |
6241 | resume_clear_thread_private_info (struct thread_info *thread) | |
6242 | { | |
6243 | if (thread->priv != NULL) | |
6244 | { | |
7aabaf9d SM |
6245 | remote_thread_info *priv = get_remote_thread_info (thread); |
6246 | ||
6247 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6248 | priv->watch_data_address = 0; | |
799a2abe PA |
6249 | } |
6250 | } | |
6251 | ||
e5ef252a PA |
6252 | /* Append a vCont continue-with-signal action for threads that have a |
6253 | non-zero stop signal. */ | |
6254 | ||
6b8edb51 PA |
6255 | char * |
6256 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6257 | ptid_t ptid) | |
e5ef252a | 6258 | { |
5b6d1e4f | 6259 | for (thread_info *thread : all_non_exited_threads (this, ptid)) |
08036331 | 6260 | if (inferior_ptid != thread->ptid |
70509625 | 6261 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
6262 | { |
6263 | p = append_resumption (p, endp, thread->ptid, | |
6264 | 0, thread->suspend.stop_signal); | |
6265 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 6266 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6267 | } |
6268 | ||
6269 | return p; | |
6270 | } | |
6271 | ||
7b68ffbb PA |
6272 | /* Set the target running, using the packets that use Hc |
6273 | (c/s/C/S). */ | |
6274 | ||
6b8edb51 PA |
6275 | void |
6276 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6277 | gdb_signal siggnal) | |
7b68ffbb PA |
6278 | { |
6279 | struct remote_state *rs = get_remote_state (); | |
7b68ffbb PA |
6280 | char *buf; |
6281 | ||
6282 | rs->last_sent_signal = siggnal; | |
6283 | rs->last_sent_step = step; | |
6284 | ||
6285 | /* The c/s/C/S resume packets use Hc, so set the continue | |
6286 | thread. */ | |
d7e15655 | 6287 | if (ptid == minus_one_ptid) |
7b68ffbb PA |
6288 | set_continue_thread (any_thread_ptid); |
6289 | else | |
6290 | set_continue_thread (ptid); | |
6291 | ||
5b6d1e4f | 6292 | for (thread_info *thread : all_non_exited_threads (this)) |
7b68ffbb PA |
6293 | resume_clear_thread_private_info (thread); |
6294 | ||
8d64371b | 6295 | buf = rs->buf.data (); |
6b8edb51 | 6296 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6297 | { |
6298 | /* We don't pass signals to the target in reverse exec mode. */ | |
6299 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
6300 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
6301 | siggnal); | |
6302 | ||
6303 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
6304 | error (_("Remote reverse-step not supported.")); | |
6305 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
6306 | error (_("Remote reverse-continue not supported.")); | |
6307 | ||
6308 | strcpy (buf, step ? "bs" : "bc"); | |
6309 | } | |
6310 | else if (siggnal != GDB_SIGNAL_0) | |
6311 | { | |
6312 | buf[0] = step ? 'S' : 'C'; | |
6313 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
6314 | buf[2] = tohex (((int) siggnal) & 0xf); | |
6315 | buf[3] = '\0'; | |
6316 | } | |
6317 | else | |
6318 | strcpy (buf, step ? "s" : "c"); | |
6319 | ||
6320 | putpkt (buf); | |
6321 | } | |
6322 | ||
506fb367 DJ |
6323 | /* Resume the remote inferior by using a "vCont" packet. The thread |
6324 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
6325 | resumed thread should be single-stepped and/or signalled. If PTID |
6326 | equals minus_one_ptid, then all threads are resumed; the thread to | |
6327 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
6328 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 6329 | |
7b68ffbb PA |
6330 | This function issues a strict subset of all possible vCont commands |
6331 | at the moment. */ | |
44eaed12 | 6332 | |
6b8edb51 PA |
6333 | int |
6334 | remote_target::remote_resume_with_vcont (ptid_t ptid, int step, | |
6335 | enum gdb_signal siggnal) | |
506fb367 DJ |
6336 | { |
6337 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
6338 | char *p; |
6339 | char *endp; | |
44eaed12 | 6340 | |
7b68ffbb | 6341 | /* No reverse execution actions defined for vCont. */ |
6b8edb51 | 6342 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6343 | return 0; |
6344 | ||
4082afcc | 6345 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6346 | remote_vcont_probe (); |
44eaed12 | 6347 | |
4082afcc | 6348 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 6349 | return 0; |
44eaed12 | 6350 | |
8d64371b TT |
6351 | p = rs->buf.data (); |
6352 | endp = p + get_remote_packet_size (); | |
82f73884 | 6353 | |
506fb367 DJ |
6354 | /* If we could generate a wider range of packets, we'd have to worry |
6355 | about overflowing BUF. Should there be a generic | |
6356 | "multi-part-packet" packet? */ | |
6357 | ||
0d8f58ca PA |
6358 | p += xsnprintf (p, endp - p, "vCont"); |
6359 | ||
d7e15655 | 6360 | if (ptid == magic_null_ptid) |
c906108c | 6361 | { |
79d7f229 PA |
6362 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
6363 | so we don't have any TID numbers the inferior will | |
6364 | understand. Make sure to only send forms that do not specify | |
6365 | a TID. */ | |
a9cbf802 | 6366 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 6367 | } |
d7e15655 | 6368 | else if (ptid == minus_one_ptid || ptid.is_pid ()) |
506fb367 | 6369 | { |
0d8f58ca PA |
6370 | /* Resume all threads (of all processes, or of a single |
6371 | process), with preference for INFERIOR_PTID. This assumes | |
6372 | inferior_ptid belongs to the set of all threads we are about | |
6373 | to resume. */ | |
a493e3e2 | 6374 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 6375 | { |
0d8f58ca PA |
6376 | /* Step inferior_ptid, with or without signal. */ |
6377 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 6378 | } |
0d8f58ca | 6379 | |
e5ef252a PA |
6380 | /* Also pass down any pending signaled resumption for other |
6381 | threads not the current. */ | |
6382 | p = append_pending_thread_resumptions (p, endp, ptid); | |
6383 | ||
0d8f58ca | 6384 | /* And continue others without a signal. */ |
a493e3e2 | 6385 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
6386 | } |
6387 | else | |
506fb367 DJ |
6388 | { |
6389 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 6390 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 6391 | } |
c906108c | 6392 | |
8d64371b | 6393 | gdb_assert (strlen (rs->buf.data ()) < get_remote_packet_size ()); |
82f73884 | 6394 | putpkt (rs->buf); |
506fb367 | 6395 | |
6efcd9a8 | 6396 | if (target_is_non_stop_p ()) |
74531fed PA |
6397 | { |
6398 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6399 | reply will be reported asynchronously by means of a `%Stop' | |
6400 | notification. */ | |
8d64371b TT |
6401 | getpkt (&rs->buf, 0); |
6402 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6403 | error (_("Unexpected vCont reply in non-stop mode: %s"), | |
6404 | rs->buf.data ()); | |
74531fed PA |
6405 | } |
6406 | ||
506fb367 | 6407 | return 1; |
c906108c | 6408 | } |
43ff13b4 | 6409 | |
506fb367 DJ |
6410 | /* Tell the remote machine to resume. */ |
6411 | ||
f6ac5f3d PA |
6412 | void |
6413 | remote_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal) | |
43ff13b4 | 6414 | { |
d01949b6 | 6415 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6416 | |
85ad3aaf PA |
6417 | /* When connected in non-stop mode, the core resumes threads |
6418 | individually. Resuming remote threads directly in target_resume | |
6419 | would thus result in sending one packet per thread. Instead, to | |
6420 | minimize roundtrip latency, here we just store the resume | |
c9d22089 SM |
6421 | request (put the thread in RESUMED_PENDING_VCONT state); the actual remote |
6422 | resumption will be done in remote_target::commit_resume, where we'll be | |
6423 | able to do vCont action coalescing. */ | |
f6ac5f3d | 6424 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6425 | { |
7aabaf9d | 6426 | remote_thread_info *remote_thr; |
85ad3aaf | 6427 | |
d7e15655 | 6428 | if (minus_one_ptid == ptid || ptid.is_pid ()) |
5b6d1e4f | 6429 | remote_thr = get_remote_thread_info (this, inferior_ptid); |
85ad3aaf | 6430 | else |
5b6d1e4f | 6431 | remote_thr = get_remote_thread_info (this, ptid); |
7aabaf9d | 6432 | |
c9d22089 SM |
6433 | /* We don't expect the core to ask to resume an already resumed (from |
6434 | its point of view) thread. */ | |
a6c11cbb | 6435 | gdb_assert (remote_thr->get_resume_state () == resume_state::NOT_RESUMED); |
c9d22089 SM |
6436 | |
6437 | remote_thr->set_resumed_pending_vcont (step, siggnal); | |
85ad3aaf PA |
6438 | return; |
6439 | } | |
6440 | ||
722247f1 YQ |
6441 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6442 | (explained in remote-notif.c:handle_notification) so | |
6443 | remote_notif_process is not called. We need find a place where | |
6444 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6445 | before resuming inferior, because inferior was stopped and no RSP | |
6446 | traffic at that moment. */ | |
6efcd9a8 | 6447 | if (!target_is_non_stop_p ()) |
5965e028 | 6448 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6449 | |
f6ac5f3d | 6450 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6451 | |
7b68ffbb PA |
6452 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
6453 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
6b8edb51 | 6454 | remote_resume_with_hc (ptid, step, siggnal); |
43ff13b4 | 6455 | |
c9d22089 SM |
6456 | /* Update resumed state tracked by the remote target. */ |
6457 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
6458 | get_remote_thread_info (tp)->set_resumed (); | |
6459 | ||
2acceee2 | 6460 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
6461 | with the event loop. NOTE: this is the one place where all the |
6462 | execution commands end up. We could alternatively do this in each | |
23860348 | 6463 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
6464 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
6465 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 6466 | NOT asynchronously. */ |
362646f5 | 6467 | if (target_can_async_p ()) |
6a3753b3 | 6468 | target_async (1); |
e24a49d8 PA |
6469 | |
6470 | /* We've just told the target to resume. The remote server will | |
6471 | wait for the inferior to stop, and then send a stop reply. In | |
6472 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6473 | because the stub wouldn't be ready to process it. This applies |
6474 | only to the base all-stop protocol, however. In non-stop (which | |
6475 | only supports vCont), the stub replies with an "OK", and is | |
6476 | immediate able to process further serial input. */ | |
6efcd9a8 | 6477 | if (!target_is_non_stop_p ()) |
74531fed | 6478 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6479 | } |
85ad3aaf | 6480 | |
85ad3aaf PA |
6481 | static int is_pending_fork_parent_thread (struct thread_info *thread); |
6482 | ||
6483 | /* Private per-inferior info for target remote processes. */ | |
6484 | ||
089354bb | 6485 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6486 | { |
6487 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6488 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6489 | }; |
6490 | ||
089354bb SM |
6491 | /* Get the remote private inferior data associated to INF. */ |
6492 | ||
6493 | static remote_inferior * | |
6494 | get_remote_inferior (inferior *inf) | |
6495 | { | |
6496 | if (inf->priv == NULL) | |
6497 | inf->priv.reset (new remote_inferior); | |
6498 | ||
6499 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6500 | } | |
6501 | ||
f5db4863 | 6502 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6503 | outgoing packet buffer. This is used to send multiple vCont |
6504 | packets if we have more actions than would fit a single packet. */ | |
6505 | ||
f5db4863 | 6506 | class vcont_builder |
85ad3aaf | 6507 | { |
f5db4863 | 6508 | public: |
6b8edb51 PA |
6509 | explicit vcont_builder (remote_target *remote) |
6510 | : m_remote (remote) | |
f5db4863 PA |
6511 | { |
6512 | restart (); | |
6513 | } | |
6514 | ||
6515 | void flush (); | |
6516 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6517 | ||
6518 | private: | |
6519 | void restart (); | |
6520 | ||
6b8edb51 PA |
6521 | /* The remote target. */ |
6522 | remote_target *m_remote; | |
6523 | ||
85ad3aaf PA |
6524 | /* Pointer to the first action. P points here if no action has been |
6525 | appended yet. */ | |
f5db4863 | 6526 | char *m_first_action; |
85ad3aaf PA |
6527 | |
6528 | /* Where the next action will be appended. */ | |
f5db4863 | 6529 | char *m_p; |
85ad3aaf PA |
6530 | |
6531 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6532 | char *m_endp; |
85ad3aaf PA |
6533 | }; |
6534 | ||
6535 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6536 | ||
f5db4863 PA |
6537 | void |
6538 | vcont_builder::restart () | |
85ad3aaf | 6539 | { |
6b8edb51 | 6540 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6541 | |
8d64371b TT |
6542 | m_p = rs->buf.data (); |
6543 | m_endp = m_p + m_remote->get_remote_packet_size (); | |
f5db4863 PA |
6544 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6545 | m_first_action = m_p; | |
85ad3aaf PA |
6546 | } |
6547 | ||
6548 | /* If the vCont packet being built has any action, send it to the | |
6549 | remote end. */ | |
6550 | ||
f5db4863 PA |
6551 | void |
6552 | vcont_builder::flush () | |
85ad3aaf PA |
6553 | { |
6554 | struct remote_state *rs; | |
6555 | ||
f5db4863 | 6556 | if (m_p == m_first_action) |
85ad3aaf PA |
6557 | return; |
6558 | ||
6b8edb51 PA |
6559 | rs = m_remote->get_remote_state (); |
6560 | m_remote->putpkt (rs->buf); | |
8d64371b TT |
6561 | m_remote->getpkt (&rs->buf, 0); |
6562 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6563 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf.data ()); | |
85ad3aaf PA |
6564 | } |
6565 | ||
6566 | /* The largest action is range-stepping, with its two addresses. This | |
6567 | is more than sufficient. If a new, bigger action is created, it'll | |
6568 | quickly trigger a failed assertion in append_resumption (and we'll | |
6569 | just bump this). */ | |
6570 | #define MAX_ACTION_SIZE 200 | |
6571 | ||
6572 | /* Append a new vCont action in the outgoing packet being built. If | |
6573 | the action doesn't fit the packet along with previous actions, push | |
6574 | what we've got so far to the remote end and start over a new vCont | |
6575 | packet (with the new action). */ | |
6576 | ||
f5db4863 PA |
6577 | void |
6578 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6579 | { |
6580 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6581 | |
6b8edb51 PA |
6582 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6583 | ptid, step, siggnal); | |
85ad3aaf PA |
6584 | |
6585 | /* Check whether this new action would fit in the vCont packet along | |
6586 | with previous actions. If not, send what we've got so far and | |
6587 | start a new vCont packet. */ | |
f5db4863 PA |
6588 | size_t rsize = endp - buf; |
6589 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6590 | { |
f5db4863 PA |
6591 | flush (); |
6592 | restart (); | |
85ad3aaf PA |
6593 | |
6594 | /* Should now fit. */ | |
f5db4863 | 6595 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6596 | } |
6597 | ||
f5db4863 PA |
6598 | memcpy (m_p, buf, rsize); |
6599 | m_p += rsize; | |
6600 | *m_p = '\0'; | |
85ad3aaf PA |
6601 | } |
6602 | ||
6603 | /* to_commit_resume implementation. */ | |
6604 | ||
f6ac5f3d PA |
6605 | void |
6606 | remote_target::commit_resume () | |
85ad3aaf | 6607 | { |
85ad3aaf PA |
6608 | int any_process_wildcard; |
6609 | int may_global_wildcard_vcont; | |
85ad3aaf PA |
6610 | |
6611 | /* If connected in all-stop mode, we'd send the remote resume | |
6612 | request directly from remote_resume. Likewise if | |
6613 | reverse-debugging, as there are no defined vCont actions for | |
6614 | reverse execution. */ | |
f6ac5f3d | 6615 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6616 | return; |
6617 | ||
6618 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6619 | instead of resuming all threads of each process individually. | |
6620 | However, if any thread of a process must remain halted, we can't | |
6621 | send wildcard resumes and must send one action per thread. | |
6622 | ||
6623 | Care must be taken to not resume threads/processes the server | |
6624 | side already told us are stopped, but the core doesn't know about | |
6625 | yet, because the events are still in the vStopped notification | |
6626 | queue. For example: | |
6627 | ||
6628 | #1 => vCont s:p1.1;c | |
6629 | #2 <= OK | |
6630 | #3 <= %Stopped T05 p1.1 | |
6631 | #4 => vStopped | |
6632 | #5 <= T05 p1.2 | |
6633 | #6 => vStopped | |
6634 | #7 <= OK | |
6635 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6636 | #9 => vCont s:p1.1;c | |
6637 | ||
6638 | The last vCont above would resume thread p1.2 by mistake, because | |
6639 | the server has no idea that the event for p1.2 had not been | |
6640 | handled yet. | |
6641 | ||
6642 | The server side must similarly ignore resume actions for the | |
6643 | thread that has a pending %Stopped notification (and any other | |
6644 | threads with events pending), until GDB acks the notification | |
6645 | with vStopped. Otherwise, e.g., the following case is | |
6646 | mishandled: | |
6647 | ||
6648 | #1 => g (or any other packet) | |
6649 | #2 <= [registers] | |
6650 | #3 <= %Stopped T05 p1.2 | |
6651 | #4 => vCont s:p1.1;c | |
6652 | #5 <= OK | |
6653 | ||
6654 | Above, the server must not resume thread p1.2. GDB can't know | |
6655 | that p1.2 stopped until it acks the %Stopped notification, and | |
6656 | since from GDB's perspective all threads should be running, it | |
6657 | sends a "c" action. | |
6658 | ||
6659 | Finally, special care must also be given to handling fork/vfork | |
6660 | events. A (v)fork event actually tells us that two processes | |
6661 | stopped -- the parent and the child. Until we follow the fork, | |
6662 | we must not resume the child. Therefore, if we have a pending | |
6663 | fork follow, we must not send a global wildcard resume action | |
6664 | (vCont;c). We can still send process-wide wildcards though. */ | |
6665 | ||
6666 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
6667 | may_global_wildcard_vcont = 1; | |
6668 | ||
6669 | /* And assume every process is individually wildcard-able too. */ | |
5b6d1e4f | 6670 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6671 | { |
089354bb SM |
6672 | remote_inferior *priv = get_remote_inferior (inf); |
6673 | ||
6674 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6675 | } |
6676 | ||
6677 | /* Check for any pending events (not reported or processed yet) and | |
6678 | disable process and global wildcard resumes appropriately. */ | |
6679 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6680 | ||
5b6d1e4f | 6681 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6682 | { |
c9d22089 SM |
6683 | remote_thread_info *priv = get_remote_thread_info (tp); |
6684 | ||
85ad3aaf PA |
6685 | /* If a thread of a process is not meant to be resumed, then we |
6686 | can't wildcard that process. */ | |
a6c11cbb | 6687 | if (priv->get_resume_state () == resume_state::NOT_RESUMED) |
85ad3aaf | 6688 | { |
089354bb | 6689 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6690 | |
6691 | /* And if we can't wildcard a process, we can't wildcard | |
6692 | everything either. */ | |
6693 | may_global_wildcard_vcont = 0; | |
6694 | continue; | |
6695 | } | |
6696 | ||
6697 | /* If a thread is the parent of an unfollowed fork, then we | |
6698 | can't do a global wildcard, as that would resume the fork | |
6699 | child. */ | |
6700 | if (is_pending_fork_parent_thread (tp)) | |
6701 | may_global_wildcard_vcont = 0; | |
6702 | } | |
6703 | ||
6704 | /* Now let's build the vCont packet(s). Actions must be appended | |
6705 | from narrower to wider scopes (thread -> process -> global). If | |
6706 | we end up with too many actions for a single packet vcont_builder | |
6707 | flushes the current vCont packet to the remote side and starts a | |
6708 | new one. */ | |
6b8edb51 | 6709 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
6710 | |
6711 | /* Threads first. */ | |
5b6d1e4f | 6712 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6713 | { |
7aabaf9d | 6714 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf | 6715 | |
c9d22089 SM |
6716 | /* If the thread was previously vCont-resumed, no need to send a specific |
6717 | action for it. If we didn't receive a resume request for it, don't | |
6718 | send an action for it either. */ | |
a6c11cbb | 6719 | if (remote_thr->get_resume_state () != resume_state::RESUMED_PENDING_VCONT) |
85ad3aaf PA |
6720 | continue; |
6721 | ||
6722 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6723 | ||
c9d22089 SM |
6724 | const resumed_pending_vcont_info &info |
6725 | = remote_thr->resumed_pending_vcont_info (); | |
85ad3aaf | 6726 | |
c9d22089 SM |
6727 | /* Check if we need to send a specific action for this thread. If not, |
6728 | it will be included in a wildcard resume instead. */ | |
6729 | if (info.step || info.sig != GDB_SIGNAL_0 | |
6730 | || !get_remote_inferior (tp->inf)->may_wildcard_vcont) | |
6731 | vcont_builder.push_action (tp->ptid, info.step, info.sig); | |
6732 | ||
6733 | remote_thr->set_resumed (); | |
85ad3aaf PA |
6734 | } |
6735 | ||
6736 | /* Now check whether we can send any process-wide wildcard. This is | |
6737 | to avoid sending a global wildcard in the case nothing is | |
6738 | supposed to be resumed. */ | |
6739 | any_process_wildcard = 0; | |
6740 | ||
5b6d1e4f | 6741 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6742 | { |
089354bb | 6743 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6744 | { |
6745 | any_process_wildcard = 1; | |
6746 | break; | |
6747 | } | |
6748 | } | |
6749 | ||
6750 | if (any_process_wildcard) | |
6751 | { | |
6752 | /* If all processes are wildcard-able, then send a single "c" | |
6753 | action, otherwise, send an "all (-1) threads of process" | |
6754 | continue action for each running process, if any. */ | |
6755 | if (may_global_wildcard_vcont) | |
6756 | { | |
f5db4863 PA |
6757 | vcont_builder.push_action (minus_one_ptid, |
6758 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6759 | } |
6760 | else | |
6761 | { | |
5b6d1e4f | 6762 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6763 | { |
089354bb | 6764 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6765 | { |
f2907e49 | 6766 | vcont_builder.push_action (ptid_t (inf->pid), |
f5db4863 | 6767 | false, GDB_SIGNAL_0); |
85ad3aaf PA |
6768 | } |
6769 | } | |
6770 | } | |
6771 | } | |
6772 | ||
f5db4863 | 6773 | vcont_builder.flush (); |
85ad3aaf PA |
6774 | } |
6775 | ||
c906108c | 6776 | \f |
43ff13b4 | 6777 | |
74531fed PA |
6778 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6779 | thread, all threads of a remote process, or all threads of all | |
6780 | processes. */ | |
6781 | ||
6b8edb51 PA |
6782 | void |
6783 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
6784 | { |
6785 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6786 | char *p = rs->buf.data (); |
6787 | char *endp = p + get_remote_packet_size (); | |
74531fed | 6788 | |
5b6d1e4f PA |
6789 | /* FIXME: This supports_vCont_probed check is a workaround until |
6790 | packet_support is per-connection. */ | |
6791 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN | |
6792 | || !rs->supports_vCont_probed) | |
6b8edb51 | 6793 | remote_vcont_probe (); |
74531fed | 6794 | |
d458bd84 | 6795 | if (!rs->supports_vCont.t) |
74531fed PA |
6796 | error (_("Remote server does not support stopping threads")); |
6797 | ||
d7e15655 | 6798 | if (ptid == minus_one_ptid |
0e998d96 | 6799 | || (!remote_multi_process_p (rs) && ptid.is_pid ())) |
74531fed PA |
6800 | p += xsnprintf (p, endp - p, "vCont;t"); |
6801 | else | |
6802 | { | |
6803 | ptid_t nptid; | |
6804 | ||
74531fed PA |
6805 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6806 | ||
0e998d96 | 6807 | if (ptid.is_pid ()) |
74531fed | 6808 | /* All (-1) threads of process. */ |
e99b03dc | 6809 | nptid = ptid_t (ptid.pid (), -1, 0); |
74531fed PA |
6810 | else |
6811 | { | |
6812 | /* Small optimization: if we already have a stop reply for | |
6813 | this thread, no use in telling the stub we want this | |
6814 | stopped. */ | |
6815 | if (peek_stop_reply (ptid)) | |
6816 | return; | |
6817 | ||
6818 | nptid = ptid; | |
6819 | } | |
6820 | ||
a9cbf802 | 6821 | write_ptid (p, endp, nptid); |
74531fed PA |
6822 | } |
6823 | ||
6824 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6825 | come in asynchronously by notification. */ | |
6826 | putpkt (rs->buf); | |
8d64371b TT |
6827 | getpkt (&rs->buf, 0); |
6828 | if (strcmp (rs->buf.data (), "OK") != 0) | |
a068643d | 6829 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid).c_str (), |
8d64371b | 6830 | rs->buf.data ()); |
74531fed PA |
6831 | } |
6832 | ||
bfedc46a PA |
6833 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6834 | interrupt the remote target. It is undefined which thread of which | |
6835 | process reports the interrupt. */ | |
74531fed | 6836 | |
6b8edb51 PA |
6837 | void |
6838 | remote_target::remote_interrupt_as () | |
74531fed PA |
6839 | { |
6840 | struct remote_state *rs = get_remote_state (); | |
6841 | ||
3a29589a DJ |
6842 | rs->ctrlc_pending_p = 1; |
6843 | ||
74531fed PA |
6844 | /* If the inferior is stopped already, but the core didn't know |
6845 | about it yet, just ignore the request. The cached wait status | |
6846 | will be collected in remote_wait. */ | |
6847 | if (rs->cached_wait_status) | |
6848 | return; | |
6849 | ||
9a7071a8 JB |
6850 | /* Send interrupt_sequence to remote target. */ |
6851 | send_interrupt_sequence (); | |
74531fed PA |
6852 | } |
6853 | ||
de979965 PA |
6854 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6855 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6856 | reports the interrupt. Throws an error if the packet is not |
6857 | supported by the server. */ | |
de979965 | 6858 | |
6b8edb51 PA |
6859 | void |
6860 | remote_target::remote_interrupt_ns () | |
de979965 PA |
6861 | { |
6862 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6863 | char *p = rs->buf.data (); |
6864 | char *endp = p + get_remote_packet_size (); | |
de979965 PA |
6865 | |
6866 | xsnprintf (p, endp - p, "vCtrlC"); | |
6867 | ||
6868 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6869 | come in asynchronously by notification. */ | |
6870 | putpkt (rs->buf); | |
8d64371b | 6871 | getpkt (&rs->buf, 0); |
de979965 PA |
6872 | |
6873 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6874 | { | |
6875 | case PACKET_OK: | |
6876 | break; | |
6877 | case PACKET_UNKNOWN: | |
e42de8c7 | 6878 | error (_("No support for interrupting the remote target.")); |
de979965 | 6879 | case PACKET_ERROR: |
8d64371b | 6880 | error (_("Interrupting target failed: %s"), rs->buf.data ()); |
de979965 | 6881 | } |
de979965 PA |
6882 | } |
6883 | ||
bfedc46a | 6884 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6885 | |
f6ac5f3d PA |
6886 | void |
6887 | remote_target::stop (ptid_t ptid) | |
c906108c | 6888 | { |
2189c312 | 6889 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
c906108c | 6890 | |
6efcd9a8 | 6891 | if (target_is_non_stop_p ()) |
74531fed | 6892 | remote_stop_ns (ptid); |
c906108c | 6893 | else |
bfedc46a PA |
6894 | { |
6895 | /* We don't currently have a way to transparently pause the | |
6896 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6897 | remote_interrupt_as (); |
bfedc46a PA |
6898 | } |
6899 | } | |
6900 | ||
6901 | /* Implement the to_interrupt function for the remote targets. */ | |
6902 | ||
f6ac5f3d PA |
6903 | void |
6904 | remote_target::interrupt () | |
bfedc46a | 6905 | { |
2189c312 | 6906 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
bfedc46a | 6907 | |
e42de8c7 PA |
6908 | if (target_is_non_stop_p ()) |
6909 | remote_interrupt_ns (); | |
bfedc46a | 6910 | else |
e42de8c7 | 6911 | remote_interrupt_as (); |
c906108c SS |
6912 | } |
6913 | ||
93692b58 PA |
6914 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6915 | ||
f6ac5f3d PA |
6916 | void |
6917 | remote_target::pass_ctrlc () | |
93692b58 | 6918 | { |
2189c312 | 6919 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
93692b58 | 6920 | |
2189c312 | 6921 | struct remote_state *rs = get_remote_state (); |
93692b58 PA |
6922 | |
6923 | /* If we're starting up, we're not fully synced yet. Quit | |
6924 | immediately. */ | |
6925 | if (rs->starting_up) | |
6926 | quit (); | |
6927 | /* If ^C has already been sent once, offer to disconnect. */ | |
6928 | else if (rs->ctrlc_pending_p) | |
6929 | interrupt_query (); | |
6930 | else | |
e671cd59 | 6931 | target_interrupt (); |
93692b58 PA |
6932 | } |
6933 | ||
c906108c SS |
6934 | /* Ask the user what to do when an interrupt is received. */ |
6935 | ||
6b8edb51 PA |
6936 | void |
6937 | remote_target::interrupt_query () | |
c906108c | 6938 | { |
abc56d60 | 6939 | struct remote_state *rs = get_remote_state (); |
c906108c | 6940 | |
abc56d60 | 6941 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6942 | { |
abc56d60 PA |
6943 | if (query (_("The target is not responding to interrupt requests.\n" |
6944 | "Stop debugging it? "))) | |
74531fed | 6945 | { |
5b6d1e4f | 6946 | remote_unpush_target (this); |
abc56d60 | 6947 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6948 | } |
6949 | } | |
abc56d60 PA |
6950 | else |
6951 | { | |
6952 | if (query (_("Interrupted while waiting for the program.\n" | |
6953 | "Give up waiting? "))) | |
6954 | quit (); | |
6955 | } | |
c906108c SS |
6956 | } |
6957 | ||
6426a772 JM |
6958 | /* Enable/disable target terminal ownership. Most targets can use |
6959 | terminal groups to control terminal ownership. Remote targets are | |
6960 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6961 | is required. */ |
6426a772 | 6962 | |
f6ac5f3d PA |
6963 | void |
6964 | remote_target::terminal_inferior () | |
6426a772 | 6965 | { |
6426a772 JM |
6966 | /* NOTE: At this point we could also register our selves as the |
6967 | recipient of all input. Any characters typed could then be | |
23860348 | 6968 | passed on down to the target. */ |
6426a772 JM |
6969 | } |
6970 | ||
f6ac5f3d PA |
6971 | void |
6972 | remote_target::terminal_ours () | |
6426a772 | 6973 | { |
6426a772 JM |
6974 | } |
6975 | ||
176a6961 | 6976 | static void |
05be00a8 | 6977 | remote_console_output (const char *msg) |
c906108c | 6978 | { |
05be00a8 | 6979 | const char *p; |
c906108c | 6980 | |
c5aa993b | 6981 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6982 | { |
6983 | char tb[2]; | |
6984 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6985 | |
c906108c SS |
6986 | tb[0] = c; |
6987 | tb[1] = 0; | |
da5bd37e | 6988 | gdb_stdtarg->puts (tb); |
c906108c | 6989 | } |
da5bd37e | 6990 | gdb_stdtarg->flush (); |
00db5b94 | 6991 | } |
74531fed | 6992 | |
32603266 | 6993 | struct stop_reply : public notif_event |
74531fed | 6994 | { |
32603266 | 6995 | ~stop_reply (); |
74531fed | 6996 | |
722247f1 | 6997 | /* The identifier of the thread about this event */ |
74531fed PA |
6998 | ptid_t ptid; |
6999 | ||
340e3c99 | 7000 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
7001 | connection, represented by a remote_state object, is closed, |
7002 | all the associated stop_reply events should be released. */ | |
7003 | struct remote_state *rs; | |
7004 | ||
74531fed PA |
7005 | struct target_waitstatus ws; |
7006 | ||
5cd63fda PA |
7007 | /* The architecture associated with the expedited registers. */ |
7008 | gdbarch *arch; | |
7009 | ||
15148d6a PA |
7010 | /* Expedited registers. This makes remote debugging a bit more |
7011 | efficient for those targets that provide critical registers as | |
7012 | part of their normal status mechanism (as another roundtrip to | |
7013 | fetch them is avoided). */ | |
32603266 | 7014 | std::vector<cached_reg_t> regcache; |
74531fed | 7015 | |
f7e6eed5 PA |
7016 | enum target_stop_reason stop_reason; |
7017 | ||
74531fed PA |
7018 | CORE_ADDR watch_data_address; |
7019 | ||
dc146f7c | 7020 | int core; |
32603266 | 7021 | }; |
c906108c | 7022 | |
221e1a37 PA |
7023 | /* Return the length of the stop reply queue. */ |
7024 | ||
6b8edb51 PA |
7025 | int |
7026 | remote_target::stop_reply_queue_length () | |
221e1a37 | 7027 | { |
6b8edb51 | 7028 | remote_state *rs = get_remote_state (); |
953edf2b | 7029 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
7030 | } |
7031 | ||
cb8c24b6 | 7032 | static void |
6b8edb51 | 7033 | remote_notif_stop_parse (remote_target *remote, |
bb277751 | 7034 | struct notif_client *self, const char *buf, |
722247f1 YQ |
7035 | struct notif_event *event) |
7036 | { | |
6b8edb51 | 7037 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
7038 | } |
7039 | ||
7040 | static void | |
6b8edb51 | 7041 | remote_notif_stop_ack (remote_target *remote, |
bb277751 | 7042 | struct notif_client *self, const char *buf, |
722247f1 YQ |
7043 | struct notif_event *event) |
7044 | { | |
7045 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
7046 | ||
7047 | /* acknowledge */ | |
6b8edb51 | 7048 | putpkt (remote, self->ack_command); |
722247f1 | 7049 | |
b0083dd7 PA |
7050 | /* Kind can be TARGET_WAITKIND_IGNORE if we have meanwhile discarded |
7051 | the notification. It was left in the queue because we need to | |
7052 | acknowledge it and pull the rest of the notifications out. */ | |
7053 | if (stop_reply->ws.kind != TARGET_WAITKIND_IGNORE) | |
7054 | remote->push_stop_reply (stop_reply); | |
722247f1 YQ |
7055 | } |
7056 | ||
7057 | static int | |
6b8edb51 PA |
7058 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
7059 | struct notif_client *self) | |
722247f1 YQ |
7060 | { |
7061 | /* We can't get pending events in remote_notif_process for | |
7062 | notification stop, and we have to do this in remote_wait_ns | |
7063 | instead. If we fetch all queued events from stub, remote stub | |
7064 | may exit and we have no chance to process them back in | |
7065 | remote_wait_ns. */ | |
6b8edb51 PA |
7066 | remote_state *rs = remote->get_remote_state (); |
7067 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
722247f1 YQ |
7068 | return 0; |
7069 | } | |
7070 | ||
32603266 | 7071 | stop_reply::~stop_reply () |
722247f1 | 7072 | { |
32603266 TT |
7073 | for (cached_reg_t ® : regcache) |
7074 | xfree (reg.data); | |
722247f1 YQ |
7075 | } |
7076 | ||
32603266 TT |
7077 | static notif_event_up |
7078 | remote_notif_stop_alloc_reply () | |
722247f1 | 7079 | { |
32603266 | 7080 | return notif_event_up (new struct stop_reply ()); |
722247f1 YQ |
7081 | } |
7082 | ||
7083 | /* A client of notification Stop. */ | |
7084 | ||
7085 | struct notif_client notif_client_stop = | |
7086 | { | |
7087 | "Stop", | |
7088 | "vStopped", | |
7089 | remote_notif_stop_parse, | |
7090 | remote_notif_stop_ack, | |
7091 | remote_notif_stop_can_get_pending_events, | |
7092 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 7093 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
7094 | }; |
7095 | ||
85ad3aaf | 7096 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
7097 | the pid of the process that owns the threads we want to check, or |
7098 | -1 if we want to check all threads. */ | |
7099 | ||
7100 | static int | |
7101 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
7102 | ptid_t thread_ptid) | |
7103 | { | |
7104 | if (ws->kind == TARGET_WAITKIND_FORKED | |
7105 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
7106 | { | |
e99b03dc | 7107 | if (event_pid == -1 || event_pid == thread_ptid.pid ()) |
cbb8991c DB |
7108 | return 1; |
7109 | } | |
7110 | ||
7111 | return 0; | |
7112 | } | |
7113 | ||
85ad3aaf PA |
7114 | /* Return the thread's pending status used to determine whether the |
7115 | thread is a fork parent stopped at a fork event. */ | |
7116 | ||
7117 | static struct target_waitstatus * | |
7118 | thread_pending_fork_status (struct thread_info *thread) | |
7119 | { | |
7120 | if (thread->suspend.waitstatus_pending_p) | |
7121 | return &thread->suspend.waitstatus; | |
7122 | else | |
7123 | return &thread->pending_follow; | |
7124 | } | |
7125 | ||
7126 | /* Determine if THREAD is a pending fork parent thread. */ | |
7127 | ||
7128 | static int | |
7129 | is_pending_fork_parent_thread (struct thread_info *thread) | |
7130 | { | |
7131 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
7132 | int pid = -1; | |
7133 | ||
7134 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
7135 | } | |
7136 | ||
cbb8991c DB |
7137 | /* If CONTEXT contains any fork child threads that have not been |
7138 | reported yet, remove them from the CONTEXT list. If such a | |
7139 | thread exists it is because we are stopped at a fork catchpoint | |
7140 | and have not yet called follow_fork, which will set up the | |
7141 | host-side data structures for the new process. */ | |
7142 | ||
6b8edb51 PA |
7143 | void |
7144 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c | 7145 | { |
cbb8991c DB |
7146 | int pid = -1; |
7147 | struct notif_client *notif = ¬if_client_stop; | |
cbb8991c DB |
7148 | |
7149 | /* For any threads stopped at a fork event, remove the corresponding | |
7150 | fork child threads from the CONTEXT list. */ | |
5b6d1e4f | 7151 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c | 7152 | { |
85ad3aaf | 7153 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
7154 | |
7155 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 7156 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
7157 | } |
7158 | ||
7159 | /* Check for any pending fork events (not reported or processed yet) | |
7160 | in process PID and remove those fork child threads from the | |
7161 | CONTEXT list as well. */ | |
7162 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7163 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7164 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
7165 | || event->ws.kind == TARGET_WAITKIND_VFORKED | |
7166 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
7167 | context->remove_thread (event->ws.value.related_pid); | |
85ad3aaf PA |
7168 | } |
7169 | ||
7170 | /* Check whether any event pending in the vStopped queue would prevent | |
7171 | a global or process wildcard vCont action. Clear | |
7172 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
7173 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
7174 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
7175 | ||
6b8edb51 PA |
7176 | void |
7177 | remote_target::check_pending_events_prevent_wildcard_vcont | |
7178 | (int *may_global_wildcard) | |
85ad3aaf PA |
7179 | { |
7180 | struct notif_client *notif = ¬if_client_stop; | |
7181 | ||
7182 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7183 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7184 | { | |
7185 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
7186 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
7187 | continue; | |
85ad3aaf | 7188 | |
953edf2b TT |
7189 | if (event->ws.kind == TARGET_WAITKIND_FORKED |
7190 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
7191 | *may_global_wildcard = 0; | |
722247f1 | 7192 | |
5b6d1e4f | 7193 | struct inferior *inf = find_inferior_ptid (this, event->ptid); |
722247f1 | 7194 | |
953edf2b TT |
7195 | /* This may be the first time we heard about this process. |
7196 | Regardless, we must not do a global wildcard resume, otherwise | |
7197 | we'd resume this process too. */ | |
7198 | *may_global_wildcard = 0; | |
7199 | if (inf != NULL) | |
7200 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
722247f1 | 7201 | } |
722247f1 YQ |
7202 | } |
7203 | ||
f48ff2a7 | 7204 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7205 | |
6b8edb51 PA |
7206 | void |
7207 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7208 | { |
f48ff2a7 YQ |
7209 | struct stop_reply *reply; |
7210 | struct remote_state *rs = get_remote_state (); | |
7211 | struct remote_notif_state *rns = rs->notif_state; | |
7212 | ||
7213 | /* This function can be notified when an inferior exists. When the | |
7214 | target is not remote, the notification state is NULL. */ | |
7215 | if (rs->remote_desc == NULL) | |
7216 | return; | |
7217 | ||
7218 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7219 | |
74531fed | 7220 | /* Discard the in-flight notification. */ |
e99b03dc | 7221 | if (reply != NULL && reply->ptid.pid () == inf->pid) |
74531fed | 7222 | { |
b0083dd7 PA |
7223 | /* Leave the notification pending, since the server expects that |
7224 | we acknowledge it with vStopped. But clear its contents, so | |
7225 | that later on when we acknowledge it, we also discard it. */ | |
7226 | reply->ws.kind = TARGET_WAITKIND_IGNORE; | |
7227 | ||
7228 | if (remote_debug) | |
7229 | fprintf_unfiltered (gdb_stdlog, | |
7230 | "discarded in-flight notification\n"); | |
74531fed | 7231 | } |
c906108c | 7232 | |
74531fed PA |
7233 | /* Discard the stop replies we have already pulled with |
7234 | vStopped. */ | |
953edf2b TT |
7235 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7236 | rs->stop_reply_queue.end (), | |
7237 | [=] (const stop_reply_up &event) | |
7238 | { | |
7239 | return event->ptid.pid () == inf->pid; | |
7240 | }); | |
7241 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
bcc75809 YQ |
7242 | } |
7243 | ||
7244 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7245 | |
6b8edb51 PA |
7246 | void |
7247 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7248 | { |
6b8edb51 | 7249 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7250 | |
f48ff2a7 YQ |
7251 | /* Discard the stop replies we have already pulled with |
7252 | vStopped. */ | |
953edf2b TT |
7253 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7254 | rs->stop_reply_queue.end (), | |
7255 | [=] (const stop_reply_up &event) | |
7256 | { | |
7257 | return event->rs == rs; | |
7258 | }); | |
7259 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7260 | } |
43ff13b4 | 7261 | |
722247f1 YQ |
7262 | /* Remove the first reply in 'stop_reply_queue' which matches |
7263 | PTID. */ | |
2e9f7625 | 7264 | |
6b8edb51 PA |
7265 | struct stop_reply * |
7266 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7267 | { |
953edf2b | 7268 | remote_state *rs = get_remote_state (); |
722247f1 | 7269 | |
953edf2b TT |
7270 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7271 | rs->stop_reply_queue.end (), | |
7272 | [=] (const stop_reply_up &event) | |
7273 | { | |
7274 | return event->ptid.matches (ptid); | |
7275 | }); | |
7276 | struct stop_reply *result; | |
7277 | if (iter == rs->stop_reply_queue.end ()) | |
7278 | result = nullptr; | |
7279 | else | |
7280 | { | |
7281 | result = iter->release (); | |
7282 | rs->stop_reply_queue.erase (iter); | |
7283 | } | |
722247f1 | 7284 | |
722247f1 YQ |
7285 | if (notif_debug) |
7286 | fprintf_unfiltered (gdb_stdlog, | |
7287 | "notif: discard queued event: 'Stop' in %s\n", | |
a068643d | 7288 | target_pid_to_str (ptid).c_str ()); |
a744cf53 | 7289 | |
953edf2b | 7290 | return result; |
74531fed | 7291 | } |
75c99385 | 7292 | |
74531fed PA |
7293 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7294 | remove it from the queue, and return it. Returns NULL if none is | |
7295 | found. If there are still queued events left to process, tell the | |
7296 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7297 | |
6b8edb51 PA |
7298 | struct stop_reply * |
7299 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7300 | { |
953edf2b | 7301 | remote_state *rs = get_remote_state (); |
722247f1 | 7302 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7303 | |
953edf2b | 7304 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7305 | { |
6b8edb51 PA |
7306 | /* There's still at least an event left. */ |
7307 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
7308 | } | |
74531fed | 7309 | |
722247f1 | 7310 | return r; |
74531fed PA |
7311 | } |
7312 | ||
7313 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7314 | know that we now have at least one queued event left to pass to the | |
7315 | core side, tell the event loop to get back to target_wait soon. */ | |
7316 | ||
6b8edb51 PA |
7317 | void |
7318 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7319 | { |
6b8edb51 | 7320 | remote_state *rs = get_remote_state (); |
953edf2b | 7321 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7322 | |
722247f1 YQ |
7323 | if (notif_debug) |
7324 | fprintf_unfiltered (gdb_stdlog, | |
7325 | "notif: push 'Stop' %s to queue %d\n", | |
a068643d | 7326 | target_pid_to_str (new_event->ptid).c_str (), |
953edf2b | 7327 | int (rs->stop_reply_queue.size ())); |
74531fed | 7328 | |
6b8edb51 | 7329 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
74531fed PA |
7330 | } |
7331 | ||
7332 | /* Returns true if we have a stop reply for PTID. */ | |
7333 | ||
6b8edb51 PA |
7334 | int |
7335 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7336 | { |
6b8edb51 | 7337 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7338 | for (auto &event : rs->stop_reply_queue) |
7339 | if (ptid == event->ptid | |
7340 | && event->ws.kind == TARGET_WAITKIND_STOPPED) | |
7341 | return 1; | |
7342 | return 0; | |
74531fed PA |
7343 | } |
7344 | ||
26d56a93 SL |
7345 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7346 | starting with P and ending with PEND matches PREFIX. */ | |
7347 | ||
7348 | static int | |
7349 | strprefix (const char *p, const char *pend, const char *prefix) | |
7350 | { | |
7351 | for ( ; p < pend; p++, prefix++) | |
7352 | if (*p != *prefix) | |
7353 | return 0; | |
7354 | return *prefix == '\0'; | |
7355 | } | |
7356 | ||
74531fed PA |
7357 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7358 | result is stored in EVENT, or throws an error. */ | |
7359 | ||
6b8edb51 | 7360 | void |
bb277751 | 7361 | remote_target::remote_parse_stop_reply (const char *buf, stop_reply *event) |
74531fed | 7362 | { |
5cd63fda | 7363 | remote_arch_state *rsa = NULL; |
74531fed | 7364 | ULONGEST addr; |
256642e8 | 7365 | const char *p; |
94585166 | 7366 | int skipregs = 0; |
74531fed PA |
7367 | |
7368 | event->ptid = null_ptid; | |
bcc75809 | 7369 | event->rs = get_remote_state (); |
74531fed PA |
7370 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
7371 | event->ws.value.integer = 0; | |
f7e6eed5 | 7372 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
32603266 | 7373 | event->regcache.clear (); |
dc146f7c | 7374 | event->core = -1; |
74531fed PA |
7375 | |
7376 | switch (buf[0]) | |
7377 | { | |
7378 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7379 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7380 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7381 | ss = signal number | |
7382 | n... = register number | |
7383 | r... = register contents | |
7384 | */ | |
7385 | ||
7386 | p = &buf[3]; /* after Txx */ | |
7387 | while (*p) | |
7388 | { | |
256642e8 | 7389 | const char *p1; |
cea39f65 | 7390 | int fieldsize; |
43ff13b4 | 7391 | |
1f10ba14 PA |
7392 | p1 = strchr (p, ':'); |
7393 | if (p1 == NULL) | |
7394 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7395 | Packet: '%s'\n"), | |
7396 | p, buf); | |
7397 | if (p == p1) | |
7398 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7399 | Packet: '%s'\n"), | |
7400 | p, buf); | |
3c3bea1c | 7401 | |
1f10ba14 PA |
7402 | /* Some "registers" are actually extended stop information. |
7403 | Note if you're adding a new entry here: GDB 7.9 and | |
7404 | earlier assume that all register "numbers" that start | |
7405 | with an hex digit are real register numbers. Make sure | |
7406 | the server only sends such a packet if it knows the | |
7407 | client understands it. */ | |
c8e38a49 | 7408 | |
26d56a93 | 7409 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7410 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7411 | else if (strprefix (p, p1, "syscall_entry")) |
7412 | { | |
7413 | ULONGEST sysno; | |
7414 | ||
7415 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
7416 | p = unpack_varlen_hex (++p1, &sysno); | |
7417 | event->ws.value.syscall_number = (int) sysno; | |
7418 | } | |
7419 | else if (strprefix (p, p1, "syscall_return")) | |
7420 | { | |
7421 | ULONGEST sysno; | |
7422 | ||
7423 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
7424 | p = unpack_varlen_hex (++p1, &sysno); | |
7425 | event->ws.value.syscall_number = (int) sysno; | |
7426 | } | |
26d56a93 SL |
7427 | else if (strprefix (p, p1, "watch") |
7428 | || strprefix (p, p1, "rwatch") | |
7429 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7430 | { |
f7e6eed5 | 7431 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7432 | p = unpack_varlen_hex (++p1, &addr); |
7433 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7434 | } |
26d56a93 | 7435 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7436 | { |
7437 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7438 | ||
7439 | /* Make sure the stub doesn't forget to indicate support | |
7440 | with qSupported. */ | |
7441 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7442 | error (_("Unexpected swbreak stop reason")); | |
7443 | ||
7444 | /* The value part is documented as "must be empty", | |
7445 | though we ignore it, in case we ever decide to make | |
7446 | use of it in a backward compatible way. */ | |
8424cc97 | 7447 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7448 | } |
26d56a93 | 7449 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7450 | { |
7451 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7452 | ||
7453 | /* Make sure the stub doesn't forget to indicate support | |
7454 | with qSupported. */ | |
7455 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7456 | error (_("Unexpected hwbreak stop reason")); | |
7457 | ||
7458 | /* See above. */ | |
8424cc97 | 7459 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7460 | } |
26d56a93 | 7461 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7462 | { |
1f10ba14 | 7463 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 7464 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7465 | } |
26d56a93 | 7466 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
7467 | { |
7468 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
7469 | /* p1 will indicate "begin" or "end", but it makes | |
7470 | no difference for now, so ignore it. */ | |
8424cc97 | 7471 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7472 | } |
26d56a93 | 7473 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7474 | { |
7475 | ULONGEST c; | |
a744cf53 | 7476 | |
1f10ba14 PA |
7477 | p = unpack_varlen_hex (++p1, &c); |
7478 | event->core = c; | |
cea39f65 | 7479 | } |
26d56a93 | 7480 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
7481 | { |
7482 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7483 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
7484 | } | |
26d56a93 | 7485 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
7486 | { |
7487 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7488 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
7489 | } | |
26d56a93 | 7490 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
7491 | { |
7492 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 7493 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7494 | } |
6ab24463 | 7495 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7496 | { |
7497 | ULONGEST ignored; | |
94585166 DB |
7498 | int pathlen; |
7499 | ||
7500 | /* Determine the length of the execd pathname. */ | |
7501 | p = unpack_varlen_hex (++p1, &ignored); | |
7502 | pathlen = (p - p1) / 2; | |
7503 | ||
7504 | /* Save the pathname for event reporting and for | |
7505 | the next run command. */ | |
c6321f19 TT |
7506 | gdb::unique_xmalloc_ptr<char[]> pathname |
7507 | ((char *) xmalloc (pathlen + 1)); | |
7508 | hex2bin (p1, (gdb_byte *) pathname.get (), pathlen); | |
94585166 DB |
7509 | pathname[pathlen] = '\0'; |
7510 | ||
7511 | /* This is freed during event handling. */ | |
c6321f19 | 7512 | event->ws.value.execd_pathname = pathname.release (); |
94585166 DB |
7513 | event->ws.kind = TARGET_WAITKIND_EXECD; |
7514 | ||
7515 | /* Skip the registers included in this packet, since | |
7516 | they may be for an architecture different from the | |
7517 | one used by the original program. */ | |
7518 | skipregs = 1; | |
7519 | } | |
65706a29 PA |
7520 | else if (strprefix (p, p1, "create")) |
7521 | { | |
7522 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 7523 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7524 | } |
cea39f65 MS |
7525 | else |
7526 | { | |
1f10ba14 | 7527 | ULONGEST pnum; |
256642e8 | 7528 | const char *p_temp; |
1f10ba14 | 7529 | |
94585166 DB |
7530 | if (skipregs) |
7531 | { | |
8424cc97 | 7532 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7533 | p++; |
7534 | continue; | |
7535 | } | |
7536 | ||
1f10ba14 PA |
7537 | /* Maybe a real ``P'' register number. */ |
7538 | p_temp = unpack_varlen_hex (p, &pnum); | |
7539 | /* If the first invalid character is the colon, we got a | |
7540 | register number. Otherwise, it's an unknown stop | |
7541 | reason. */ | |
7542 | if (p_temp == p1) | |
7543 | { | |
5cd63fda PA |
7544 | /* If we haven't parsed the event's thread yet, find |
7545 | it now, in order to find the architecture of the | |
7546 | reported expedited registers. */ | |
7547 | if (event->ptid == null_ptid) | |
7548 | { | |
24ed6739 AB |
7549 | /* If there is no thread-id information then leave |
7550 | the event->ptid as null_ptid. Later in | |
7551 | process_stop_reply we will pick a suitable | |
7552 | thread. */ | |
5cd63fda PA |
7553 | const char *thr = strstr (p1 + 1, ";thread:"); |
7554 | if (thr != NULL) | |
7555 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7556 | NULL); | |
5cd63fda PA |
7557 | } |
7558 | ||
7559 | if (rsa == NULL) | |
7560 | { | |
5b6d1e4f PA |
7561 | inferior *inf |
7562 | = (event->ptid == null_ptid | |
7563 | ? NULL | |
7564 | : find_inferior_ptid (this, event->ptid)); | |
5cd63fda PA |
7565 | /* If this is the first time we learn anything |
7566 | about this process, skip the registers | |
7567 | included in this packet, since we don't yet | |
7568 | know which architecture to use to parse them. | |
7569 | We'll determine the architecture later when | |
7570 | we process the stop reply and retrieve the | |
7571 | target description, via | |
7572 | remote_notice_new_inferior -> | |
7573 | post_create_inferior. */ | |
7574 | if (inf == NULL) | |
7575 | { | |
7576 | p = strchrnul (p1 + 1, ';'); | |
7577 | p++; | |
7578 | continue; | |
7579 | } | |
7580 | ||
7581 | event->arch = inf->gdbarch; | |
9d6eea31 | 7582 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7583 | } |
7584 | ||
7585 | packet_reg *reg | |
7586 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7587 | cached_reg_t cached_reg; |
43ff13b4 | 7588 | |
1f10ba14 PA |
7589 | if (reg == NULL) |
7590 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7591 | Packet: '%s'\n"), |
1f10ba14 | 7592 | hex_string (pnum), p, buf); |
c8e38a49 | 7593 | |
1f10ba14 | 7594 | cached_reg.num = reg->regnum; |
d1dff226 | 7595 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7596 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7597 | |
1f10ba14 PA |
7598 | p = p1 + 1; |
7599 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7600 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7601 | p += 2 * fieldsize; |
5cd63fda | 7602 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7603 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7604 | |
32603266 | 7605 | event->regcache.push_back (cached_reg); |
1f10ba14 PA |
7606 | } |
7607 | else | |
7608 | { | |
7609 | /* Not a number. Silently skip unknown optional | |
7610 | info. */ | |
8424cc97 | 7611 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7612 | } |
cea39f65 | 7613 | } |
c8e38a49 | 7614 | |
cea39f65 MS |
7615 | if (*p != ';') |
7616 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7617 | buf, p); | |
7618 | ++p; | |
7619 | } | |
5b5596ff PA |
7620 | |
7621 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7622 | break; | |
7623 | ||
c8e38a49 PA |
7624 | /* fall through */ |
7625 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7626 | { |
7627 | int sig; | |
7628 | ||
7629 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7630 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7631 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7632 | event->ws.value.sig = (enum gdb_signal) sig; | |
7633 | else | |
7634 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7635 | } | |
c8e38a49 | 7636 | break; |
65706a29 PA |
7637 | case 'w': /* Thread exited. */ |
7638 | { | |
65706a29 PA |
7639 | ULONGEST value; |
7640 | ||
7641 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7642 | p = unpack_varlen_hex (&buf[1], &value); | |
7643 | event->ws.value.integer = value; | |
7644 | if (*p != ';') | |
7645 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7646 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7647 | break; |
7648 | } | |
c8e38a49 PA |
7649 | case 'W': /* Target exited. */ |
7650 | case 'X': | |
7651 | { | |
c8e38a49 | 7652 | ULONGEST value; |
82f73884 | 7653 | |
c8e38a49 PA |
7654 | /* GDB used to accept only 2 hex chars here. Stubs should |
7655 | only send more if they detect GDB supports multi-process | |
7656 | support. */ | |
7657 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7658 | |
c8e38a49 PA |
7659 | if (buf[0] == 'W') |
7660 | { | |
7661 | /* The remote process exited. */ | |
74531fed PA |
7662 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7663 | event->ws.value.integer = value; | |
c8e38a49 PA |
7664 | } |
7665 | else | |
7666 | { | |
7667 | /* The remote process exited with a signal. */ | |
74531fed | 7668 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7669 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7670 | event->ws.value.sig = (enum gdb_signal) value; | |
7671 | else | |
7672 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7673 | } |
82f73884 | 7674 | |
e7af6c70 TBA |
7675 | /* If no process is specified, return null_ptid, and let the |
7676 | caller figure out the right process to use. */ | |
7677 | int pid = 0; | |
c8e38a49 PA |
7678 | if (*p == '\0') |
7679 | ; | |
7680 | else if (*p == ';') | |
7681 | { | |
7682 | p++; | |
7683 | ||
0b24eb2d | 7684 | if (*p == '\0') |
82f73884 | 7685 | ; |
61012eef | 7686 | else if (startswith (p, "process:")) |
82f73884 | 7687 | { |
c8e38a49 | 7688 | ULONGEST upid; |
a744cf53 | 7689 | |
c8e38a49 PA |
7690 | p += sizeof ("process:") - 1; |
7691 | unpack_varlen_hex (p, &upid); | |
7692 | pid = upid; | |
82f73884 PA |
7693 | } |
7694 | else | |
7695 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7696 | } |
c8e38a49 PA |
7697 | else |
7698 | error (_("unknown stop reply packet: %s"), buf); | |
f2907e49 | 7699 | event->ptid = ptid_t (pid); |
74531fed PA |
7700 | } |
7701 | break; | |
f2faf941 PA |
7702 | case 'N': |
7703 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7704 | event->ptid = minus_one_ptid; | |
7705 | break; | |
74531fed | 7706 | } |
74531fed PA |
7707 | } |
7708 | ||
722247f1 YQ |
7709 | /* When the stub wants to tell GDB about a new notification reply, it |
7710 | sends a notification (%Stop, for example). Those can come it at | |
7711 | any time, hence, we have to make sure that any pending | |
7712 | putpkt/getpkt sequence we're making is finished, before querying | |
7713 | the stub for more events with the corresponding ack command | |
7714 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7715 | immediately upon receiving the notification, something like this | |
7716 | could happen: | |
74531fed PA |
7717 | |
7718 | 1.1) --> Hg 1 | |
7719 | 1.2) <-- OK | |
7720 | 1.3) --> g | |
7721 | 1.4) <-- %Stop | |
7722 | 1.5) --> vStopped | |
7723 | 1.6) <-- (registers reply to step #1.3) | |
7724 | ||
7725 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7726 | query. | |
7727 | ||
796cb314 | 7728 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7729 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7730 | doing whatever we were doing: | |
7731 | ||
7732 | 2.1) --> Hg 1 | |
7733 | 2.2) <-- OK | |
7734 | 2.3) --> g | |
7735 | 2.4) <-- %Stop | |
7736 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7737 | 2.5) <-- (registers reply to step #2.3) | |
7738 | ||
85102364 | 7739 | Eventually after step #2.5, we return to the event loop, which |
74531fed PA |
7740 | notices there's an event on the |
7741 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7742 | associated callback --- the function below. At this point, we're | |
7743 | always safe to start a vStopped sequence. : | |
7744 | ||
7745 | 2.6) --> vStopped | |
7746 | 2.7) <-- T05 thread:2 | |
7747 | 2.8) --> vStopped | |
7748 | 2.9) --> OK | |
7749 | */ | |
7750 | ||
722247f1 | 7751 | void |
6b8edb51 | 7752 | remote_target::remote_notif_get_pending_events (notif_client *nc) |
74531fed PA |
7753 | { |
7754 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7755 | |
f48ff2a7 | 7756 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7757 | { |
722247f1 YQ |
7758 | if (notif_debug) |
7759 | fprintf_unfiltered (gdb_stdlog, | |
7760 | "notif: process: '%s' ack pending event\n", | |
7761 | nc->name); | |
74531fed | 7762 | |
722247f1 | 7763 | /* acknowledge */ |
8d64371b TT |
7764 | nc->ack (this, nc, rs->buf.data (), |
7765 | rs->notif_state->pending_event[nc->id]); | |
f48ff2a7 | 7766 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
7767 | |
7768 | while (1) | |
7769 | { | |
8d64371b TT |
7770 | getpkt (&rs->buf, 0); |
7771 | if (strcmp (rs->buf.data (), "OK") == 0) | |
74531fed PA |
7772 | break; |
7773 | else | |
8d64371b | 7774 | remote_notif_ack (this, nc, rs->buf.data ()); |
74531fed PA |
7775 | } |
7776 | } | |
722247f1 YQ |
7777 | else |
7778 | { | |
7779 | if (notif_debug) | |
7780 | fprintf_unfiltered (gdb_stdlog, | |
7781 | "notif: process: '%s' no pending reply\n", | |
7782 | nc->name); | |
7783 | } | |
74531fed PA |
7784 | } |
7785 | ||
6b8edb51 PA |
7786 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
7787 | avoid having to export the whole remote_target class. */ | |
7788 | ||
7789 | void | |
7790 | remote_notif_get_pending_events (remote_target *remote, notif_client *nc) | |
7791 | { | |
7792 | remote->remote_notif_get_pending_events (nc); | |
7793 | } | |
7794 | ||
8f66807b AB |
7795 | /* Called from process_stop_reply when the stop packet we are responding |
7796 | to didn't include a process-id or thread-id. STATUS is the stop event | |
7797 | we are responding to. | |
7798 | ||
7799 | It is the task of this function to select a suitable thread (or process) | |
7800 | and return its ptid, this is the thread (or process) we will assume the | |
7801 | stop event came from. | |
7802 | ||
7803 | In some cases there isn't really any choice about which thread (or | |
7804 | process) is selected, a basic remote with a single process containing a | |
7805 | single thread might choose not to send any process-id or thread-id in | |
7806 | its stop packets, this function will select and return the one and only | |
7807 | thread. | |
7808 | ||
7809 | However, if a target supports multiple threads (or processes) and still | |
7810 | doesn't include a thread-id (or process-id) in its stop packet then | |
7811 | first, this is a badly behaving target, and second, we're going to have | |
7812 | to select a thread (or process) at random and use that. This function | |
7813 | will print a warning to the user if it detects that there is the | |
7814 | possibility that GDB is guessing which thread (or process) to | |
7815 | report. | |
7816 | ||
7817 | Note that this is called before GDB fetches the updated thread list from the | |
7818 | target. So it's possible for the stop reply to be ambiguous and for GDB to | |
7819 | not realize it. For example, if there's initially one thread, the target | |
7820 | spawns a second thread, and then sends a stop reply without an id that | |
7821 | concerns the first thread. GDB will assume the stop reply is about the | |
7822 | first thread - the only thread it knows about - without printing a warning. | |
7823 | Anyway, if the remote meant for the stop reply to be about the second thread, | |
7824 | then it would be really broken, because GDB doesn't know about that thread | |
7825 | yet. */ | |
74531fed | 7826 | |
6b8edb51 | 7827 | ptid_t |
8f66807b AB |
7828 | remote_target::select_thread_for_ambiguous_stop_reply |
7829 | (const struct target_waitstatus *status) | |
74531fed | 7830 | { |
8f66807b AB |
7831 | /* Some stop events apply to all threads in an inferior, while others |
7832 | only apply to a single thread. */ | |
7833 | bool process_wide_stop | |
7834 | = (status->kind == TARGET_WAITKIND_EXITED | |
7835 | || status->kind == TARGET_WAITKIND_SIGNALLED); | |
74531fed | 7836 | |
8f66807b AB |
7837 | thread_info *first_resumed_thread = nullptr; |
7838 | bool ambiguous = false; | |
74531fed | 7839 | |
8f66807b AB |
7840 | /* Consider all non-exited threads of the target, find the first resumed |
7841 | one. */ | |
7842 | for (thread_info *thr : all_non_exited_threads (this)) | |
24ed6739 | 7843 | { |
8f66807b | 7844 | remote_thread_info *remote_thr = get_remote_thread_info (thr); |
cada5fc9 | 7845 | |
a6c11cbb | 7846 | if (remote_thr->get_resume_state () != resume_state::RESUMED) |
8f66807b | 7847 | continue; |
24ed6739 | 7848 | |
8f66807b AB |
7849 | if (first_resumed_thread == nullptr) |
7850 | first_resumed_thread = thr; | |
7851 | else if (!process_wide_stop | |
7852 | || first_resumed_thread->ptid.pid () != thr->ptid.pid ()) | |
7853 | ambiguous = true; | |
7854 | } | |
7855 | ||
7856 | gdb_assert (first_resumed_thread != nullptr); | |
cada5fc9 | 7857 | |
8f66807b AB |
7858 | /* Warn if the remote target is sending ambiguous stop replies. */ |
7859 | if (ambiguous) | |
7860 | { | |
7861 | static bool warned = false; | |
7862 | ||
7863 | if (!warned) | |
7864 | { | |
7865 | /* If you are seeing this warning then the remote target has | |
7866 | stopped without specifying a thread-id, but the target | |
7867 | does have multiple threads (or inferiors), and so GDB is | |
7868 | having to guess which thread stopped. | |
7869 | ||
7870 | Examples of what might cause this are the target sending | |
7871 | and 'S' stop packet, or a 'T' stop packet and not | |
7872 | including a thread-id. | |
7873 | ||
7874 | Additionally, the target might send a 'W' or 'X packet | |
7875 | without including a process-id, when the target has | |
7876 | multiple running inferiors. */ | |
7877 | if (process_wide_stop) | |
7878 | warning (_("multi-inferior target stopped without " | |
7879 | "sending a process-id, using first " | |
7880 | "non-exited inferior")); | |
cada5fc9 | 7881 | else |
8f66807b AB |
7882 | warning (_("multi-threaded target stopped without " |
7883 | "sending a thread-id, using first " | |
7884 | "non-exited thread")); | |
7885 | warned = true; | |
24ed6739 | 7886 | } |
24ed6739 | 7887 | } |
74531fed | 7888 | |
8f66807b AB |
7889 | /* If this is a stop for all threads then don't use a particular threads |
7890 | ptid, instead create a new ptid where only the pid field is set. */ | |
7891 | if (process_wide_stop) | |
7892 | return ptid_t (first_resumed_thread->ptid.pid ()); | |
7893 | else | |
7894 | return first_resumed_thread->ptid; | |
7895 | } | |
7896 | ||
7897 | /* Called when it is decided that STOP_REPLY holds the info of the | |
7898 | event that is to be returned to the core. This function always | |
7899 | destroys STOP_REPLY. */ | |
7900 | ||
7901 | ptid_t | |
7902 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
7903 | struct target_waitstatus *status) | |
7904 | { | |
7905 | *status = stop_reply->ws; | |
7906 | ptid_t ptid = stop_reply->ptid; | |
7907 | ||
7908 | /* If no thread/process was reported by the stub then select a suitable | |
7909 | thread/process. */ | |
7910 | if (ptid == null_ptid) | |
7911 | ptid = select_thread_for_ambiguous_stop_reply (status); | |
7912 | gdb_assert (ptid != null_ptid); | |
7913 | ||
5f3563ea | 7914 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7915 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7916 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7917 | { |
5f3563ea | 7918 | /* Expedited registers. */ |
32603266 | 7919 | if (!stop_reply->regcache.empty ()) |
5f3563ea | 7920 | { |
217f1f79 | 7921 | struct regcache *regcache |
5b6d1e4f | 7922 | = get_thread_arch_regcache (this, ptid, stop_reply->arch); |
5f3563ea | 7923 | |
32603266 TT |
7924 | for (cached_reg_t ® : stop_reply->regcache) |
7925 | { | |
7926 | regcache->raw_supply (reg.num, reg.data); | |
7927 | xfree (reg.data); | |
7928 | } | |
d1dff226 | 7929 | |
32603266 | 7930 | stop_reply->regcache.clear (); |
5f3563ea | 7931 | } |
74531fed | 7932 | |
1941c569 | 7933 | remote_notice_new_inferior (ptid, 0); |
5b6d1e4f | 7934 | remote_thread_info *remote_thr = get_remote_thread_info (this, ptid); |
799a2abe PA |
7935 | remote_thr->core = stop_reply->core; |
7936 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7937 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
c9d22089 SM |
7938 | |
7939 | if (target_is_non_stop_p ()) | |
7940 | { | |
7941 | /* If the target works in non-stop mode, a stop-reply indicates that | |
7942 | only this thread stopped. */ | |
7943 | remote_thr->set_not_resumed (); | |
7944 | } | |
7945 | else | |
7946 | { | |
7947 | /* If the target works in all-stop mode, a stop-reply indicates that | |
7948 | all the target's threads stopped. */ | |
7949 | for (thread_info *tp : all_non_exited_threads (this)) | |
7950 | get_remote_thread_info (tp)->set_not_resumed (); | |
7951 | } | |
74531fed PA |
7952 | } |
7953 | ||
32603266 | 7954 | delete stop_reply; |
74531fed PA |
7955 | return ptid; |
7956 | } | |
7957 | ||
7958 | /* The non-stop mode version of target_wait. */ | |
7959 | ||
6b8edb51 | 7960 | ptid_t |
b60cea74 TT |
7961 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, |
7962 | target_wait_flags options) | |
74531fed PA |
7963 | { |
7964 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7965 | struct stop_reply *stop_reply; |
7966 | int ret; | |
fee9eda9 | 7967 | int is_notif = 0; |
74531fed PA |
7968 | |
7969 | /* If in non-stop mode, get out of getpkt even if a | |
7970 | notification is received. */ | |
7971 | ||
8d64371b | 7972 | ret = getpkt_or_notif_sane (&rs->buf, 0 /* forever */, &is_notif); |
74531fed PA |
7973 | while (1) |
7974 | { | |
fee9eda9 | 7975 | if (ret != -1 && !is_notif) |
74531fed PA |
7976 | switch (rs->buf[0]) |
7977 | { | |
7978 | case 'E': /* Error of some sort. */ | |
7979 | /* We're out of sync with the target now. Did it continue | |
7980 | or not? We can't tell which thread it was in non-stop, | |
7981 | so just ignore this. */ | |
8d64371b | 7982 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
74531fed PA |
7983 | break; |
7984 | case 'O': /* Console output. */ | |
8d64371b | 7985 | remote_console_output (&rs->buf[1]); |
74531fed PA |
7986 | break; |
7987 | default: | |
8d64371b | 7988 | warning (_("Invalid remote reply: %s"), rs->buf.data ()); |
74531fed PA |
7989 | break; |
7990 | } | |
7991 | ||
7992 | /* Acknowledge a pending stop reply that may have arrived in the | |
7993 | mean time. */ | |
f48ff2a7 | 7994 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7995 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7996 | |
7997 | /* If indeed we noticed a stop reply, we're done. */ | |
7998 | stop_reply = queued_stop_reply (ptid); | |
7999 | if (stop_reply != NULL) | |
8000 | return process_stop_reply (stop_reply, status); | |
8001 | ||
47608cb1 | 8002 | /* Still no event. If we're just polling for an event, then |
74531fed | 8003 | return to the event loop. */ |
47608cb1 | 8004 | if (options & TARGET_WNOHANG) |
74531fed PA |
8005 | { |
8006 | status->kind = TARGET_WAITKIND_IGNORE; | |
8007 | return minus_one_ptid; | |
8008 | } | |
8009 | ||
47608cb1 | 8010 | /* Otherwise do a blocking wait. */ |
8d64371b | 8011 | ret = getpkt_or_notif_sane (&rs->buf, 1 /* forever */, &is_notif); |
74531fed PA |
8012 | } |
8013 | } | |
8014 | ||
31ba933e PA |
8015 | /* Return the first resumed thread. */ |
8016 | ||
8017 | static ptid_t | |
5b6d1e4f | 8018 | first_remote_resumed_thread (remote_target *target) |
31ba933e | 8019 | { |
5b6d1e4f | 8020 | for (thread_info *tp : all_non_exited_threads (target, minus_one_ptid)) |
31ba933e PA |
8021 | if (tp->resumed) |
8022 | return tp->ptid; | |
8023 | return null_ptid; | |
8024 | } | |
8025 | ||
74531fed PA |
8026 | /* Wait until the remote machine stops, then return, storing status in |
8027 | STATUS just as `wait' would. */ | |
8028 | ||
6b8edb51 | 8029 | ptid_t |
b60cea74 TT |
8030 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, |
8031 | target_wait_flags options) | |
74531fed PA |
8032 | { |
8033 | struct remote_state *rs = get_remote_state (); | |
74531fed | 8034 | ptid_t event_ptid = null_ptid; |
cea39f65 | 8035 | char *buf; |
74531fed PA |
8036 | struct stop_reply *stop_reply; |
8037 | ||
47608cb1 PA |
8038 | again: |
8039 | ||
74531fed PA |
8040 | status->kind = TARGET_WAITKIND_IGNORE; |
8041 | status->value.integer = 0; | |
8042 | ||
8043 | stop_reply = queued_stop_reply (ptid); | |
8044 | if (stop_reply != NULL) | |
8045 | return process_stop_reply (stop_reply, status); | |
8046 | ||
8047 | if (rs->cached_wait_status) | |
8048 | /* Use the cached wait status, but only once. */ | |
8049 | rs->cached_wait_status = 0; | |
8050 | else | |
8051 | { | |
8052 | int ret; | |
722247f1 | 8053 | int is_notif; |
567420d1 | 8054 | int forever = ((options & TARGET_WNOHANG) == 0 |
6b8edb51 | 8055 | && rs->wait_forever_enabled_p); |
567420d1 PA |
8056 | |
8057 | if (!rs->waiting_for_stop_reply) | |
8058 | { | |
8059 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
8060 | return minus_one_ptid; | |
8061 | } | |
74531fed | 8062 | |
74531fed PA |
8063 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
8064 | _never_ wait for ever -> test on target_is_async_p(). | |
8065 | However, before we do that we need to ensure that the caller | |
8066 | knows how to take the target into/out of async mode. */ | |
8d64371b | 8067 | ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif); |
722247f1 YQ |
8068 | |
8069 | /* GDB gets a notification. Return to core as this event is | |
8070 | not interesting. */ | |
8071 | if (ret != -1 && is_notif) | |
8072 | return minus_one_ptid; | |
567420d1 PA |
8073 | |
8074 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
8075 | return minus_one_ptid; | |
74531fed PA |
8076 | } |
8077 | ||
8d64371b | 8078 | buf = rs->buf.data (); |
74531fed | 8079 | |
3a29589a DJ |
8080 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
8081 | an 'F' or 'O' packet. */ | |
8082 | if (buf[0] != 'F' && buf[0] != 'O') | |
8083 | rs->ctrlc_pending_p = 0; | |
8084 | ||
74531fed PA |
8085 | switch (buf[0]) |
8086 | { | |
8087 | case 'E': /* Error of some sort. */ | |
8088 | /* We're out of sync with the target now. Did it continue or | |
8089 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
8090 | rs->waiting_for_stop_reply = 0; |
8091 | ||
74531fed PA |
8092 | warning (_("Remote failure reply: %s"), buf); |
8093 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 8094 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
8095 | break; |
8096 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
8097 | /* GDB may access the inferior memory while handling the File-I/O |
8098 | request, but we don't want GDB accessing memory while waiting | |
8099 | for a stop reply. See the comments in putpkt_binary. Set | |
8100 | waiting_for_stop_reply to 0 temporarily. */ | |
8101 | rs->waiting_for_stop_reply = 0; | |
6b8edb51 | 8102 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); |
3a29589a | 8103 | rs->ctrlc_pending_p = 0; |
e42e5352 YQ |
8104 | /* GDB handled the File-I/O request, and the target is running |
8105 | again. Keep waiting for events. */ | |
8106 | rs->waiting_for_stop_reply = 1; | |
74531fed | 8107 | break; |
f2faf941 | 8108 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 8109 | { |
29090fb6 LM |
8110 | /* There is a stop reply to handle. */ |
8111 | rs->waiting_for_stop_reply = 0; | |
8112 | ||
8113 | stop_reply | |
6b8edb51 PA |
8114 | = (struct stop_reply *) remote_notif_parse (this, |
8115 | ¬if_client_stop, | |
8d64371b | 8116 | rs->buf.data ()); |
74531fed | 8117 | |
74531fed | 8118 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
8119 | break; |
8120 | } | |
8121 | case 'O': /* Console output. */ | |
8122 | remote_console_output (buf + 1); | |
c8e38a49 PA |
8123 | break; |
8124 | case '\0': | |
b73be471 | 8125 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
8126 | { |
8127 | /* Zero length reply means that we tried 'S' or 'C' and the | |
8128 | remote system doesn't support it. */ | |
223ffa71 | 8129 | target_terminal::ours_for_output (); |
c8e38a49 PA |
8130 | printf_filtered |
8131 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
8132 | gdb_signal_to_name (rs->last_sent_signal)); |
8133 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 8134 | target_terminal::inferior (); |
c8e38a49 | 8135 | |
f5c4fcd9 TT |
8136 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
8137 | putpkt (buf); | |
c8e38a49 | 8138 | break; |
43ff13b4 | 8139 | } |
86a73007 | 8140 | /* fallthrough */ |
c8e38a49 PA |
8141 | default: |
8142 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 8143 | break; |
43ff13b4 | 8144 | } |
c8e38a49 | 8145 | |
f2faf941 PA |
8146 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
8147 | return minus_one_ptid; | |
8148 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
8149 | { |
8150 | /* Nothing interesting happened. If we're doing a non-blocking | |
8151 | poll, we're done. Otherwise, go back to waiting. */ | |
8152 | if (options & TARGET_WNOHANG) | |
8153 | return minus_one_ptid; | |
8154 | else | |
8155 | goto again; | |
8156 | } | |
74531fed PA |
8157 | else if (status->kind != TARGET_WAITKIND_EXITED |
8158 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 | 8159 | { |
d7e15655 | 8160 | if (event_ptid != null_ptid) |
47f8a51d | 8161 | record_currthread (rs, event_ptid); |
82f73884 | 8162 | else |
5b6d1e4f | 8163 | event_ptid = first_remote_resumed_thread (this); |
43ff13b4 | 8164 | } |
74531fed | 8165 | else |
e7af6c70 TBA |
8166 | { |
8167 | /* A process exit. Invalidate our notion of current thread. */ | |
8168 | record_currthread (rs, minus_one_ptid); | |
8169 | /* It's possible that the packet did not include a pid. */ | |
8170 | if (event_ptid == null_ptid) | |
5b6d1e4f | 8171 | event_ptid = first_remote_resumed_thread (this); |
e7af6c70 TBA |
8172 | /* EVENT_PTID could still be NULL_PTID. Double-check. */ |
8173 | if (event_ptid == null_ptid) | |
8174 | event_ptid = magic_null_ptid; | |
8175 | } | |
79d7f229 | 8176 | |
82f73884 | 8177 | return event_ptid; |
43ff13b4 JM |
8178 | } |
8179 | ||
74531fed PA |
8180 | /* Wait until the remote machine stops, then return, storing status in |
8181 | STATUS just as `wait' would. */ | |
8182 | ||
f6ac5f3d | 8183 | ptid_t |
b60cea74 TT |
8184 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, |
8185 | target_wait_flags options) | |
c8e38a49 | 8186 | { |
2189c312 SM |
8187 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
8188 | ||
baa8575b SM |
8189 | remote_state *rs = get_remote_state (); |
8190 | ||
8191 | /* Start by clearing the flag that asks for our wait method to be called, | |
8192 | we'll mark it again at the end if needed. */ | |
8193 | if (target_is_async_p ()) | |
8194 | clear_async_event_handler (rs->remote_async_inferior_event_token); | |
8195 | ||
c8e38a49 PA |
8196 | ptid_t event_ptid; |
8197 | ||
6efcd9a8 | 8198 | if (target_is_non_stop_p ()) |
6b8edb51 | 8199 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 8200 | else |
6b8edb51 | 8201 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 8202 | |
d9d41e78 | 8203 | if (target_is_async_p ()) |
c8e38a49 | 8204 | { |
baa8575b SM |
8205 | /* If there are events left in the queue, or unacknowledged |
8206 | notifications, then tell the event loop to call us again. */ | |
8207 | if (!rs->stop_reply_queue.empty () | |
8208 | || rs->notif_state->pending_event[notif_client_stop.id] != nullptr) | |
6b8edb51 | 8209 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
c8e38a49 | 8210 | } |
c8e38a49 PA |
8211 | |
8212 | return event_ptid; | |
8213 | } | |
8214 | ||
74ca34ce | 8215 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 8216 | |
6b8edb51 PA |
8217 | int |
8218 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
8219 | packet_reg *reg) | |
b96ec7ac | 8220 | { |
ac7936df | 8221 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 8222 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8223 | char *buf, *p; |
9890e433 | 8224 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
8225 | int i; |
8226 | ||
4082afcc | 8227 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
8228 | return 0; |
8229 | ||
8230 | if (reg->pnum == -1) | |
8231 | return 0; | |
8232 | ||
8d64371b | 8233 | p = rs->buf.data (); |
fcad0fa4 | 8234 | *p++ = 'p'; |
74ca34ce | 8235 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 8236 | *p++ = '\0'; |
1f4437a4 | 8237 | putpkt (rs->buf); |
8d64371b | 8238 | getpkt (&rs->buf, 0); |
3f9a994c | 8239 | |
8d64371b | 8240 | buf = rs->buf.data (); |
2e9f7625 | 8241 | |
8d64371b | 8242 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_p])) |
74ca34ce DJ |
8243 | { |
8244 | case PACKET_OK: | |
8245 | break; | |
8246 | case PACKET_UNKNOWN: | |
8247 | return 0; | |
8248 | case PACKET_ERROR: | |
27a9c0bf | 8249 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 8250 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
8251 | reg->regnum), |
8252 | buf); | |
74ca34ce | 8253 | } |
3f9a994c JB |
8254 | |
8255 | /* If this register is unfetchable, tell the regcache. */ | |
8256 | if (buf[0] == 'x') | |
8480adf2 | 8257 | { |
73e1c03f | 8258 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 8259 | return 1; |
b96ec7ac | 8260 | } |
b96ec7ac | 8261 | |
3f9a994c JB |
8262 | /* Otherwise, parse and supply the value. */ |
8263 | p = buf; | |
8264 | i = 0; | |
8265 | while (p[0] != 0) | |
8266 | { | |
8267 | if (p[1] == 0) | |
74ca34ce | 8268 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
8269 | |
8270 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8271 | p += 2; | |
8272 | } | |
73e1c03f | 8273 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 8274 | return 1; |
b96ec7ac AC |
8275 | } |
8276 | ||
74ca34ce DJ |
8277 | /* Fetch the registers included in the target's 'g' packet. */ |
8278 | ||
6b8edb51 PA |
8279 | int |
8280 | remote_target::send_g_packet () | |
c906108c | 8281 | { |
d01949b6 | 8282 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 8283 | int buf_len; |
c906108c | 8284 | |
8d64371b | 8285 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "g"); |
b75abf5b | 8286 | putpkt (rs->buf); |
8d64371b | 8287 | getpkt (&rs->buf, 0); |
b75abf5b AK |
8288 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
8289 | error (_("Could not read registers; remote failure reply '%s'"), | |
dda83cd7 | 8290 | rs->buf.data ()); |
c906108c | 8291 | |
29709017 DJ |
8292 | /* We can get out of synch in various cases. If the first character |
8293 | in the buffer is not a hex character, assume that has happened | |
8294 | and try to fetch another packet to read. */ | |
8295 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
8296 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
8297 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
8298 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
8299 | { | |
2189c312 | 8300 | remote_debug_printf ("Bad register packet; fetching a new packet"); |
8d64371b | 8301 | getpkt (&rs->buf, 0); |
29709017 DJ |
8302 | } |
8303 | ||
8d64371b | 8304 | buf_len = strlen (rs->buf.data ()); |
74ca34ce DJ |
8305 | |
8306 | /* Sanity check the received packet. */ | |
8307 | if (buf_len % 2 != 0) | |
8d64371b | 8308 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf.data ()); |
29709017 DJ |
8309 | |
8310 | return buf_len / 2; | |
8311 | } | |
8312 | ||
6b8edb51 PA |
8313 | void |
8314 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 8315 | { |
ac7936df | 8316 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 8317 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8318 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
8319 | int i, buf_len; |
8320 | char *p; | |
8321 | char *regs; | |
8322 | ||
8d64371b | 8323 | buf_len = strlen (rs->buf.data ()); |
29709017 DJ |
8324 | |
8325 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 8326 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 | 8327 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8d64371b TT |
8328 | "bytes): %s"), |
8329 | rsa->sizeof_g_packet, buf_len / 2, | |
8330 | rs->buf.data ()); | |
74ca34ce DJ |
8331 | |
8332 | /* Save the size of the packet sent to us by the target. It is used | |
8333 | as a heuristic when determining the max size of packets that the | |
8334 | target can safely receive. */ | |
8335 | if (rsa->actual_register_packet_size == 0) | |
8336 | rsa->actual_register_packet_size = buf_len; | |
8337 | ||
8338 | /* If this is smaller than we guessed the 'g' packet would be, | |
8339 | update our records. A 'g' reply that doesn't include a register's | |
8340 | value implies either that the register is not available, or that | |
8341 | the 'p' packet must be used. */ | |
8342 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8343 | { |
9dc193c3 | 8344 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8345 | |
4a22f64d | 8346 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8347 | { |
9dc193c3 LF |
8348 | long offset = rsa->regs[i].offset; |
8349 | long reg_size = register_size (gdbarch, i); | |
8350 | ||
74ca34ce DJ |
8351 | if (rsa->regs[i].pnum == -1) |
8352 | continue; | |
8353 | ||
9dc193c3 | 8354 | if (offset >= sizeof_g_packet) |
74ca34ce | 8355 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8356 | else if (offset + reg_size > sizeof_g_packet) |
8357 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8358 | else |
74ca34ce | 8359 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8360 | } |
9dc193c3 LF |
8361 | |
8362 | /* Looks valid enough, we can assume this is the correct length | |
dda83cd7 SM |
8363 | for a 'g' packet. It's important not to adjust |
8364 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8365 | this "if" won't be run the next time the method is called | |
8366 | with a packet of the same size and one of the internal errors | |
8367 | below will trigger instead. */ | |
9dc193c3 | 8368 | rsa->sizeof_g_packet = sizeof_g_packet; |
74ca34ce | 8369 | } |
b323314b | 8370 | |
224c3ddb | 8371 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8372 | |
8373 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8374 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8375 | |
c906108c SS |
8376 | /* Reply describes registers byte by byte, each byte encoded as two |
8377 | hex characters. Suck them all up, then supply them to the | |
8378 | register cacheing/storage mechanism. */ | |
8379 | ||
8d64371b | 8380 | p = rs->buf.data (); |
ea9c271d | 8381 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8382 | { |
74ca34ce DJ |
8383 | if (p[0] == 0 || p[1] == 0) |
8384 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
8385 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8386 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 8387 | |
c906108c | 8388 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8389 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8390 | else |
8391 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8392 | p += 2; | |
8393 | } | |
8394 | ||
a744cf53 MS |
8395 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8396 | { | |
8397 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8398 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8399 | |
8400 | if (r->in_g_packet) | |
8401 | { | |
8d64371b | 8402 | if ((r->offset + reg_size) * 2 > strlen (rs->buf.data ())) |
a744cf53 MS |
8403 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
8404 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8405 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8406 | else if (rs->buf[r->offset * 2] == 'x') |
8407 | { | |
8d64371b | 8408 | gdb_assert (r->offset * 2 < strlen (rs->buf.data ())); |
a744cf53 MS |
8409 | /* The register isn't available, mark it as such (at |
8410 | the same time setting the value to zero). */ | |
73e1c03f | 8411 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8412 | } |
8413 | else | |
73e1c03f | 8414 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8415 | } |
8416 | } | |
c906108c SS |
8417 | } |
8418 | ||
6b8edb51 PA |
8419 | void |
8420 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8421 | { |
8422 | send_g_packet (); | |
56be3814 | 8423 | process_g_packet (regcache); |
29709017 DJ |
8424 | } |
8425 | ||
e6e4e701 PA |
8426 | /* Make the remote selected traceframe match GDB's selected |
8427 | traceframe. */ | |
8428 | ||
6b8edb51 PA |
8429 | void |
8430 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8431 | { |
8432 | int newnum; | |
262e1174 | 8433 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8434 | |
262e1174 | 8435 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8436 | return; |
8437 | ||
8438 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8439 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8440 | |
8441 | newnum = target_trace_find (tfind_number, | |
8442 | get_traceframe_number (), 0, 0, NULL); | |
8443 | ||
8444 | /* Should not happen. If it does, all bets are off. */ | |
8445 | if (newnum != get_traceframe_number ()) | |
8446 | warning (_("could not set remote traceframe")); | |
8447 | } | |
8448 | ||
f6ac5f3d PA |
8449 | void |
8450 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8451 | { |
ac7936df | 8452 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8453 | struct remote_state *rs = get_remote_state (); |
8454 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8455 | int i; |
8456 | ||
e6e4e701 | 8457 | set_remote_traceframe (); |
222312d3 | 8458 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8459 | |
8460 | if (regnum >= 0) | |
8461 | { | |
5cd63fda | 8462 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8463 | |
74ca34ce DJ |
8464 | gdb_assert (reg != NULL); |
8465 | ||
8466 | /* If this register might be in the 'g' packet, try that first - | |
8467 | we are likely to read more than one register. If this is the | |
8468 | first 'g' packet, we might be overly optimistic about its | |
8469 | contents, so fall back to 'p'. */ | |
8470 | if (reg->in_g_packet) | |
8471 | { | |
56be3814 | 8472 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8473 | if (reg->in_g_packet) |
8474 | return; | |
8475 | } | |
8476 | ||
56be3814 | 8477 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8478 | return; |
8479 | ||
8480 | /* This register is not available. */ | |
73e1c03f | 8481 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8482 | |
8483 | return; | |
8484 | } | |
8485 | ||
56be3814 | 8486 | fetch_registers_using_g (regcache); |
74ca34ce | 8487 | |
5cd63fda | 8488 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8489 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8490 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8491 | { |
8492 | /* This register is not available. */ | |
73e1c03f | 8493 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8494 | } |
8495 | } | |
8496 | ||
c906108c SS |
8497 | /* Prepare to store registers. Since we may send them all (using a |
8498 | 'G' request), we have to read out the ones we don't want to change | |
8499 | first. */ | |
8500 | ||
f6ac5f3d PA |
8501 | void |
8502 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8503 | { |
9d6eea31 PA |
8504 | struct remote_state *rs = get_remote_state (); |
8505 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8506 | int i; |
cf0e1e0d | 8507 | |
c906108c | 8508 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8509 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8510 | { |
8511 | case PACKET_DISABLE: | |
8512 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8513 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8514 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8515 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8516 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8517 | break; |
8518 | case PACKET_ENABLE: | |
8519 | break; | |
8520 | } | |
8521 | } | |
8522 | ||
ad10f812 | 8523 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8524 | packet was not recognized. */ |
5a2468f5 | 8525 | |
6b8edb51 PA |
8526 | int |
8527 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8528 | packet_reg *reg) | |
5a2468f5 | 8529 | { |
ac7936df | 8530 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8531 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8532 | /* Try storing a single register. */ |
8d64371b | 8533 | char *buf = rs->buf.data (); |
9890e433 | 8534 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8535 | char *p; |
5a2468f5 | 8536 | |
4082afcc | 8537 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8538 | return 0; |
8539 | ||
8540 | if (reg->pnum == -1) | |
8541 | return 0; | |
8542 | ||
ea9c271d | 8543 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8544 | p = buf + strlen (buf); |
34a79281 | 8545 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8546 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 | 8547 | putpkt (rs->buf); |
8d64371b | 8548 | getpkt (&rs->buf, 0); |
5a2468f5 | 8549 | |
74ca34ce DJ |
8550 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8551 | { | |
8552 | case PACKET_OK: | |
8553 | return 1; | |
8554 | case PACKET_ERROR: | |
27a9c0bf | 8555 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8d64371b | 8556 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf.data ()); |
74ca34ce DJ |
8557 | case PACKET_UNKNOWN: |
8558 | return 0; | |
8559 | default: | |
8560 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8561 | } | |
c906108c SS |
8562 | } |
8563 | ||
23860348 MS |
8564 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8565 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8566 | |
6b8edb51 PA |
8567 | void |
8568 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8569 | { |
d01949b6 | 8570 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8571 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8572 | gdb_byte *regs; |
c906108c SS |
8573 | char *p; |
8574 | ||
193cb69f AC |
8575 | /* Extract all the registers in the regcache copying them into a |
8576 | local buffer. */ | |
8577 | { | |
b323314b | 8578 | int i; |
a744cf53 | 8579 | |
224c3ddb | 8580 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8581 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8582 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8583 | { |
ea9c271d | 8584 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8585 | |
b323314b | 8586 | if (r->in_g_packet) |
34a79281 | 8587 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8588 | } |
8589 | } | |
c906108c SS |
8590 | |
8591 | /* Command describes registers byte by byte, | |
8592 | each byte encoded as two hex characters. */ | |
8d64371b | 8593 | p = rs->buf.data (); |
193cb69f | 8594 | *p++ = 'G'; |
74ca34ce | 8595 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 | 8596 | putpkt (rs->buf); |
8d64371b | 8597 | getpkt (&rs->buf, 0); |
1f4437a4 | 8598 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
27a9c0bf | 8599 | error (_("Could not write registers; remote failure reply '%s'"), |
8d64371b | 8600 | rs->buf.data ()); |
c906108c | 8601 | } |
74ca34ce DJ |
8602 | |
8603 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8604 | of the register cache buffer. FIXME: ignores errors. */ | |
8605 | ||
f6ac5f3d PA |
8606 | void |
8607 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8608 | { |
5cd63fda | 8609 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8610 | struct remote_state *rs = get_remote_state (); |
8611 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8612 | int i; |
8613 | ||
e6e4e701 | 8614 | set_remote_traceframe (); |
222312d3 | 8615 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8616 | |
8617 | if (regnum >= 0) | |
8618 | { | |
5cd63fda | 8619 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8620 | |
74ca34ce DJ |
8621 | gdb_assert (reg != NULL); |
8622 | ||
8623 | /* Always prefer to store registers using the 'P' packet if | |
8624 | possible; we often change only a small number of registers. | |
8625 | Sometimes we change a larger number; we'd need help from a | |
8626 | higher layer to know to use 'G'. */ | |
56be3814 | 8627 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8628 | return; |
8629 | ||
8630 | /* For now, don't complain if we have no way to write the | |
8631 | register. GDB loses track of unavailable registers too | |
8632 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8633 | any way to read the register, either... */ |
74ca34ce DJ |
8634 | if (!reg->in_g_packet) |
8635 | return; | |
8636 | ||
56be3814 | 8637 | store_registers_using_G (regcache); |
74ca34ce DJ |
8638 | return; |
8639 | } | |
8640 | ||
56be3814 | 8641 | store_registers_using_G (regcache); |
74ca34ce | 8642 | |
5cd63fda | 8643 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8644 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8645 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8646 | /* See above for why we do not issue an error here. */ |
8647 | continue; | |
8648 | } | |
c906108c SS |
8649 | \f |
8650 | ||
8651 | /* Return the number of hex digits in num. */ | |
8652 | ||
8653 | static int | |
fba45db2 | 8654 | hexnumlen (ULONGEST num) |
c906108c SS |
8655 | { |
8656 | int i; | |
8657 | ||
8658 | for (i = 0; num != 0; i++) | |
8659 | num >>= 4; | |
8660 | ||
325fac50 | 8661 | return std::max (i, 1); |
c906108c SS |
8662 | } |
8663 | ||
2df3850c | 8664 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8665 | |
8666 | static int | |
fba45db2 | 8667 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8668 | { |
c906108c | 8669 | int len = hexnumlen (num); |
a744cf53 | 8670 | |
2df3850c JM |
8671 | return hexnumnstr (buf, num, len); |
8672 | } | |
8673 | ||
c906108c | 8674 | |
2df3850c | 8675 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8676 | |
2df3850c | 8677 | static int |
fba45db2 | 8678 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8679 | { |
8680 | int i; | |
8681 | ||
8682 | buf[width] = '\0'; | |
8683 | ||
8684 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8685 | { |
c5aa993b | 8686 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8687 | num >>= 4; |
8688 | } | |
8689 | ||
2df3850c | 8690 | return width; |
c906108c SS |
8691 | } |
8692 | ||
23860348 | 8693 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8694 | |
8695 | static CORE_ADDR | |
fba45db2 | 8696 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8697 | { |
883b9c6c | 8698 | unsigned int address_size = remote_address_size; |
a744cf53 | 8699 | |
911c95a5 UW |
8700 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8701 | if (!address_size) | |
f5656ead | 8702 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8703 | |
8704 | if (address_size > 0 | |
8705 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8706 | { |
8707 | /* Only create a mask when that mask can safely be constructed | |
dda83cd7 | 8708 | in a ULONGEST variable. */ |
c906108c | 8709 | ULONGEST mask = 1; |
a744cf53 | 8710 | |
911c95a5 | 8711 | mask = (mask << address_size) - 1; |
c906108c SS |
8712 | addr &= mask; |
8713 | } | |
8714 | return addr; | |
8715 | } | |
8716 | ||
8717 | /* Determine whether the remote target supports binary downloading. | |
8718 | This is accomplished by sending a no-op memory write of zero length | |
8719 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8720 | the whole packet, since many stubs strip the eighth bit and |
8721 | subsequently compute a wrong checksum, which causes real havoc with | |
8722 | remote_write_bytes. | |
7a292a7a | 8723 | |
96baa820 | 8724 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8725 | clean. In cases like this, the user should clear "remote |
23860348 | 8726 | X-packet". */ |
96baa820 | 8727 | |
6b8edb51 PA |
8728 | void |
8729 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 8730 | { |
d01949b6 | 8731 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8732 | |
4082afcc | 8733 | switch (packet_support (PACKET_X)) |
c906108c | 8734 | { |
96baa820 JM |
8735 | case PACKET_DISABLE: |
8736 | break; | |
8737 | case PACKET_ENABLE: | |
8738 | break; | |
8739 | case PACKET_SUPPORT_UNKNOWN: | |
8740 | { | |
96baa820 | 8741 | char *p; |
802188a7 | 8742 | |
8d64371b | 8743 | p = rs->buf.data (); |
96baa820 JM |
8744 | *p++ = 'X'; |
8745 | p += hexnumstr (p, (ULONGEST) addr); | |
8746 | *p++ = ','; | |
8747 | p += hexnumstr (p, (ULONGEST) 0); | |
8748 | *p++ = ':'; | |
8749 | *p = '\0'; | |
802188a7 | 8750 | |
8d64371b TT |
8751 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8752 | getpkt (&rs->buf, 0); | |
c906108c | 8753 | |
2e9f7625 | 8754 | if (rs->buf[0] == '\0') |
96baa820 | 8755 | { |
2189c312 | 8756 | remote_debug_printf ("binary downloading NOT supported by target"); |
444abaca | 8757 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8758 | } |
8759 | else | |
8760 | { | |
2189c312 | 8761 | remote_debug_printf ("binary downloading supported by target"); |
444abaca | 8762 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8763 | } |
8764 | break; | |
8765 | } | |
c906108c SS |
8766 | } |
8767 | } | |
8768 | ||
124e13d9 SM |
8769 | /* Helper function to resize the payload in order to try to get a good |
8770 | alignment. We try to write an amount of data such that the next write will | |
8771 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8772 | ||
8773 | static int | |
8774 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8775 | { | |
8776 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8777 | } | |
8778 | ||
c906108c SS |
8779 | /* Write memory data directly to the remote machine. |
8780 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8781 | HEADER is the starting part of the packet. |
c906108c SS |
8782 | MEMADDR is the address in the remote memory space. |
8783 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8784 | LEN_UNITS is the number of addressable units to write. |
8785 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8786 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8787 | should send data as binary ('X'), or hex-encoded ('M'). | |
8788 | ||
8789 | The function creates packet of the form | |
8790 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8791 | ||
124e13d9 | 8792 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8793 | |
8794 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8795 | are omitted. | |
8796 | ||
9b409511 | 8797 | Return the transferred status, error or OK (an |
124e13d9 SM |
8798 | 'enum target_xfer_status' value). Save the number of addressable units |
8799 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8800 | ||
8801 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8802 | exchange between gdb and the stub could look like (?? in place of the | |
8803 | checksum): | |
8804 | ||
8805 | -> $m1000,4#?? | |
8806 | <- aaaabbbbccccdddd | |
8807 | ||
8808 | -> $M1000,3:eeeeffffeeee#?? | |
8809 | <- OK | |
8810 | ||
8811 | -> $m1000,4#?? | |
8812 | <- eeeeffffeeeedddd */ | |
c906108c | 8813 | |
6b8edb51 PA |
8814 | target_xfer_status |
8815 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
8816 | const gdb_byte *myaddr, | |
8817 | ULONGEST len_units, | |
8818 | int unit_size, | |
8819 | ULONGEST *xfered_len_units, | |
8820 | char packet_format, int use_length) | |
c906108c | 8821 | { |
6d820c5c | 8822 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8823 | char *p; |
a76d924d DJ |
8824 | char *plen = NULL; |
8825 | int plenlen = 0; | |
124e13d9 SM |
8826 | int todo_units; |
8827 | int units_written; | |
8828 | int payload_capacity_bytes; | |
8829 | int payload_length_bytes; | |
a76d924d DJ |
8830 | |
8831 | if (packet_format != 'X' && packet_format != 'M') | |
8832 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8833 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8834 | |
124e13d9 | 8835 | if (len_units == 0) |
9b409511 | 8836 | return TARGET_XFER_EOF; |
b2182ed2 | 8837 | |
124e13d9 | 8838 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8839 | |
6d820c5c DJ |
8840 | /* The packet buffer will be large enough for the payload; |
8841 | get_memory_packet_size ensures this. */ | |
a76d924d | 8842 | rs->buf[0] = '\0'; |
c906108c | 8843 | |
a257b5bb | 8844 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8845 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8846 | ||
124e13d9 | 8847 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8848 | if (!use_length) |
0df8b418 | 8849 | /* The comma won't be used. */ |
124e13d9 SM |
8850 | payload_capacity_bytes += 1; |
8851 | payload_capacity_bytes -= strlen (header); | |
8852 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8853 | |
a76d924d | 8854 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8855 | |
8d64371b TT |
8856 | strcat (rs->buf.data (), header); |
8857 | p = rs->buf.data () + strlen (header); | |
a76d924d DJ |
8858 | |
8859 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8860 | if (packet_format == 'X') | |
c906108c | 8861 | { |
23860348 | 8862 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8863 | todo_units = std::min (len_units, |
8864 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8865 | if (use_length) |
124e13d9 | 8866 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8867 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8868 | } |
8869 | else | |
8870 | { | |
124e13d9 | 8871 | /* Number of bytes that will fit. */ |
325fac50 PA |
8872 | todo_units |
8873 | = std::min (len_units, | |
8874 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8875 | if (use_length) |
124e13d9 | 8876 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8877 | todo_units = std::min (todo_units, |
8878 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8879 | } |
a76d924d | 8880 | |
124e13d9 | 8881 | if (todo_units <= 0) |
3de11b2e | 8882 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8883 | _("minimum packet size too small to write data")); |
802188a7 | 8884 | |
6765f3e5 DJ |
8885 | /* If we already need another packet, then try to align the end |
8886 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8887 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8888 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8889 | |
a257b5bb | 8890 | /* Append "<memaddr>". */ |
917317f4 JM |
8891 | memaddr = remote_address_masked (memaddr); |
8892 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8893 | |
a76d924d DJ |
8894 | if (use_length) |
8895 | { | |
8896 | /* Append ",". */ | |
8897 | *p++ = ','; | |
802188a7 | 8898 | |
124e13d9 | 8899 | /* Append the length and retain its location and size. It may need to be |
dda83cd7 | 8900 | adjusted once the packet body has been created. */ |
a76d924d | 8901 | plen = p; |
124e13d9 | 8902 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8903 | p += plenlen; |
8904 | } | |
a257b5bb AC |
8905 | |
8906 | /* Append ":". */ | |
917317f4 JM |
8907 | *p++ = ':'; |
8908 | *p = '\0'; | |
802188a7 | 8909 | |
a257b5bb | 8910 | /* Append the packet body. */ |
a76d924d | 8911 | if (packet_format == 'X') |
917317f4 | 8912 | { |
917317f4 JM |
8913 | /* Binary mode. Send target system values byte by byte, in |
8914 | increasing byte addresses. Only escape certain critical | |
8915 | characters. */ | |
124e13d9 SM |
8916 | payload_length_bytes = |
8917 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8918 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8919 | |
124e13d9 | 8920 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8921 | a second try to keep the end of the packet aligned. Don't do |
8922 | this if the packet is tiny. */ | |
124e13d9 | 8923 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8924 | { |
124e13d9 SM |
8925 | int new_todo_units; |
8926 | ||
8927 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8928 | ||
8929 | if (new_todo_units != units_written) | |
8930 | payload_length_bytes = | |
8931 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8932 | (gdb_byte *) p, &units_written, | |
8933 | payload_capacity_bytes); | |
6765f3e5 DJ |
8934 | } |
8935 | ||
124e13d9 SM |
8936 | p += payload_length_bytes; |
8937 | if (use_length && units_written < todo_units) | |
c906108c | 8938 | { |
802188a7 | 8939 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8940 | and we have actually sent fewer units than planned. |
917317f4 JM |
8941 | Fix-up the length field of the packet. Use the same |
8942 | number of characters as before. */ | |
124e13d9 SM |
8943 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8944 | plenlen); | |
917317f4 | 8945 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8946 | } |
a76d924d DJ |
8947 | } |
8948 | else | |
8949 | { | |
917317f4 JM |
8950 | /* Normal mode: Send target system values byte by byte, in |
8951 | increasing byte addresses. Each byte is encoded as a two hex | |
8952 | value. */ | |
124e13d9 SM |
8953 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8954 | units_written = todo_units; | |
c906108c | 8955 | } |
802188a7 | 8956 | |
8d64371b TT |
8957 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8958 | getpkt (&rs->buf, 0); | |
802188a7 | 8959 | |
2e9f7625 | 8960 | if (rs->buf[0] == 'E') |
00d84524 | 8961 | return TARGET_XFER_E_IO; |
802188a7 | 8962 | |
124e13d9 SM |
8963 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8964 | send fewer units than we'd planned. */ | |
8965 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 8966 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
8967 | } |
8968 | ||
a76d924d DJ |
8969 | /* Write memory data directly to the remote machine. |
8970 | This does not inform the data cache; the data cache uses this. | |
8971 | MEMADDR is the address in the remote memory space. | |
8972 | MYADDR is the address of the buffer in our space. | |
8973 | LEN is the number of bytes. | |
8974 | ||
9b409511 YQ |
8975 | Return the transferred status, error or OK (an |
8976 | 'enum target_xfer_status' value). Save the number of bytes | |
8977 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8978 | |
6b8edb51 PA |
8979 | target_xfer_status |
8980 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
8981 | ULONGEST len, int unit_size, | |
8982 | ULONGEST *xfered_len) | |
a76d924d | 8983 | { |
a121b7c1 | 8984 | const char *packet_format = NULL; |
a76d924d DJ |
8985 | |
8986 | /* Check whether the target supports binary download. */ | |
8987 | check_binary_download (memaddr); | |
8988 | ||
4082afcc | 8989 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8990 | { |
8991 | case PACKET_ENABLE: | |
8992 | packet_format = "X"; | |
8993 | break; | |
8994 | case PACKET_DISABLE: | |
8995 | packet_format = "M"; | |
8996 | break; | |
8997 | case PACKET_SUPPORT_UNKNOWN: | |
8998 | internal_error (__FILE__, __LINE__, | |
8999 | _("remote_write_bytes: bad internal state")); | |
9000 | default: | |
9001 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
9002 | } | |
9003 | ||
9004 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 9005 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 9006 | packet_format[0], 1); |
a76d924d DJ |
9007 | } |
9008 | ||
9217e74e YQ |
9009 | /* Read memory data directly from the remote machine. |
9010 | This does not use the data cache; the data cache uses this. | |
9011 | MEMADDR is the address in the remote memory space. | |
9012 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
9013 | LEN_UNITS is the number of addressable memory units to read.. |
9014 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
9015 | |
9016 | Return the transferred status, error or OK (an | |
9017 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
9018 | transferred in *XFERED_LEN_UNITS. |
9019 | ||
9020 | See the comment of remote_write_bytes_aux for an example of | |
9021 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 9022 | |
6b8edb51 PA |
9023 | target_xfer_status |
9024 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
9025 | ULONGEST len_units, | |
9026 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
9027 | { |
9028 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 9029 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 9030 | char *p; |
124e13d9 SM |
9031 | int todo_units; |
9032 | int decoded_bytes; | |
9217e74e | 9033 | |
124e13d9 | 9034 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
9035 | /* The packet buffer will be large enough for the payload; |
9036 | get_memory_packet_size ensures this. */ | |
9037 | ||
124e13d9 | 9038 | /* Number of units that will fit. */ |
325fac50 PA |
9039 | todo_units = std::min (len_units, |
9040 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
9041 | |
9042 | /* Construct "m"<memaddr>","<len>". */ | |
9043 | memaddr = remote_address_masked (memaddr); | |
8d64371b | 9044 | p = rs->buf.data (); |
9217e74e YQ |
9045 | *p++ = 'm'; |
9046 | p += hexnumstr (p, (ULONGEST) memaddr); | |
9047 | *p++ = ','; | |
124e13d9 | 9048 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
9049 | *p = '\0'; |
9050 | putpkt (rs->buf); | |
8d64371b | 9051 | getpkt (&rs->buf, 0); |
9217e74e YQ |
9052 | if (rs->buf[0] == 'E' |
9053 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
9054 | && rs->buf[3] == '\0') | |
9055 | return TARGET_XFER_E_IO; | |
9056 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
9057 | characters. */ | |
8d64371b | 9058 | p = rs->buf.data (); |
124e13d9 | 9059 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 9060 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 9061 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 9062 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
9063 | } |
9064 | ||
b55fbac4 YQ |
9065 | /* Using the set of read-only target sections of remote, read live |
9066 | read-only memory. | |
8acf9577 YQ |
9067 | |
9068 | For interface/parameters/return description see target.h, | |
9069 | to_xfer_partial. */ | |
9070 | ||
6b8edb51 PA |
9071 | target_xfer_status |
9072 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
9073 | ULONGEST memaddr, | |
9074 | ULONGEST len, | |
9075 | int unit_size, | |
9076 | ULONGEST *xfered_len) | |
8acf9577 | 9077 | { |
19cf757a | 9078 | const struct target_section *secp; |
8acf9577 | 9079 | |
6b8edb51 | 9080 | secp = target_section_by_addr (this, memaddr); |
8acf9577 | 9081 | if (secp != NULL |
fd361982 | 9082 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
8acf9577 | 9083 | { |
8acf9577 YQ |
9084 | ULONGEST memend = memaddr + len; |
9085 | ||
19cf757a AB |
9086 | const target_section_table *table = target_get_section_table (this); |
9087 | for (const target_section &p : *table) | |
8acf9577 | 9088 | { |
bb2a6777 | 9089 | if (memaddr >= p.addr) |
8acf9577 | 9090 | { |
bb2a6777 | 9091 | if (memend <= p.endaddr) |
8acf9577 YQ |
9092 | { |
9093 | /* Entire transfer is within this section. */ | |
124e13d9 | 9094 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9095 | xfered_len); |
8acf9577 | 9096 | } |
bb2a6777 | 9097 | else if (memaddr >= p.endaddr) |
8acf9577 YQ |
9098 | { |
9099 | /* This section ends before the transfer starts. */ | |
9100 | continue; | |
9101 | } | |
9102 | else | |
9103 | { | |
9104 | /* This section overlaps the transfer. Just do half. */ | |
bb2a6777 | 9105 | len = p.endaddr - memaddr; |
124e13d9 | 9106 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9107 | xfered_len); |
8acf9577 YQ |
9108 | } |
9109 | } | |
9110 | } | |
9111 | } | |
9112 | ||
9113 | return TARGET_XFER_EOF; | |
9114 | } | |
9115 | ||
9217e74e YQ |
9116 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
9117 | first if the requested memory is unavailable in traceframe. | |
9118 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 9119 | |
6b8edb51 PA |
9120 | target_xfer_status |
9121 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
9122 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
9123 | ULONGEST *xfered_len) | |
c906108c | 9124 | { |
6b6aa828 | 9125 | if (len == 0) |
96c4f946 | 9126 | return TARGET_XFER_EOF; |
b2182ed2 | 9127 | |
8acf9577 YQ |
9128 | if (get_traceframe_number () != -1) |
9129 | { | |
a79b1bc6 | 9130 | std::vector<mem_range> available; |
8acf9577 YQ |
9131 | |
9132 | /* If we fail to get the set of available memory, then the | |
9133 | target does not support querying traceframe info, and so we | |
9134 | attempt reading from the traceframe anyway (assuming the | |
9135 | target implements the old QTro packet then). */ | |
9136 | if (traceframe_available_memory (&available, memaddr, len)) | |
9137 | { | |
a79b1bc6 | 9138 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
9139 | { |
9140 | enum target_xfer_status res; | |
9141 | ||
9142 | /* Don't read into the traceframe's available | |
9143 | memory. */ | |
a79b1bc6 | 9144 | if (!available.empty ()) |
8acf9577 YQ |
9145 | { |
9146 | LONGEST oldlen = len; | |
9147 | ||
a79b1bc6 | 9148 | len = available[0].start - memaddr; |
8acf9577 YQ |
9149 | gdb_assert (len <= oldlen); |
9150 | } | |
9151 | ||
8acf9577 | 9152 | /* This goes through the topmost target again. */ |
6b8edb51 | 9153 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 9154 | len, unit_size, xfered_len); |
8acf9577 YQ |
9155 | if (res == TARGET_XFER_OK) |
9156 | return TARGET_XFER_OK; | |
9157 | else | |
9158 | { | |
9159 | /* No use trying further, we know some memory starting | |
9160 | at MEMADDR isn't available. */ | |
9161 | *xfered_len = len; | |
92ffd475 PC |
9162 | return (*xfered_len != 0) ? |
9163 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
9164 | } |
9165 | } | |
9166 | ||
9167 | /* Don't try to read more than how much is available, in | |
9168 | case the target implements the deprecated QTro packet to | |
9169 | cater for older GDBs (the target's knowledge of read-only | |
9170 | sections may be outdated by now). */ | |
a79b1bc6 | 9171 | len = available[0].length; |
8acf9577 YQ |
9172 | } |
9173 | } | |
9174 | ||
124e13d9 | 9175 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 9176 | } |
74531fed | 9177 | |
c906108c | 9178 | \f |
c906108c | 9179 | |
a76d924d DJ |
9180 | /* Sends a packet with content determined by the printf format string |
9181 | FORMAT and the remaining arguments, then gets the reply. Returns | |
9182 | whether the packet was a success, a failure, or unknown. */ | |
9183 | ||
6b8edb51 PA |
9184 | packet_result |
9185 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
9186 | { |
9187 | struct remote_state *rs = get_remote_state (); | |
9188 | int max_size = get_remote_packet_size (); | |
a76d924d | 9189 | va_list ap; |
a744cf53 | 9190 | |
a76d924d DJ |
9191 | va_start (ap, format); |
9192 | ||
9193 | rs->buf[0] = '\0'; | |
8d64371b | 9194 | int size = vsnprintf (rs->buf.data (), max_size, format, ap); |
33b031ce GB |
9195 | |
9196 | va_end (ap); | |
9197 | ||
9198 | if (size >= max_size) | |
9b20d036 | 9199 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
9200 | |
9201 | if (putpkt (rs->buf) < 0) | |
9202 | error (_("Communication problem with target.")); | |
9203 | ||
9204 | rs->buf[0] = '\0'; | |
8d64371b | 9205 | getpkt (&rs->buf, 0); |
a76d924d DJ |
9206 | |
9207 | return packet_check_result (rs->buf); | |
9208 | } | |
9209 | ||
a76d924d DJ |
9210 | /* Flash writing can take quite some time. We'll set |
9211 | effectively infinite timeout for flash operations. | |
9212 | In future, we'll need to decide on a better approach. */ | |
9213 | static const int remote_flash_timeout = 1000; | |
9214 | ||
f6ac5f3d PA |
9215 | void |
9216 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 9217 | { |
f5656ead | 9218 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 9219 | enum packet_result ret; |
2ec845e7 TT |
9220 | scoped_restore restore_timeout |
9221 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
9222 | |
9223 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 9224 | phex (address, addr_size), |
a76d924d DJ |
9225 | phex (length, 4)); |
9226 | switch (ret) | |
9227 | { | |
9228 | case PACKET_UNKNOWN: | |
9229 | error (_("Remote target does not support flash erase")); | |
9230 | case PACKET_ERROR: | |
9231 | error (_("Error erasing flash with vFlashErase packet")); | |
9232 | default: | |
9233 | break; | |
9234 | } | |
a76d924d DJ |
9235 | } |
9236 | ||
6b8edb51 PA |
9237 | target_xfer_status |
9238 | remote_target::remote_flash_write (ULONGEST address, | |
9239 | ULONGEST length, ULONGEST *xfered_len, | |
9240 | const gdb_byte *data) | |
a76d924d | 9241 | { |
2ec845e7 TT |
9242 | scoped_restore restore_timeout |
9243 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9244 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
9245 | xfered_len,'X', 0); | |
a76d924d DJ |
9246 | } |
9247 | ||
f6ac5f3d PA |
9248 | void |
9249 | remote_target::flash_done () | |
a76d924d | 9250 | { |
a76d924d | 9251 | int ret; |
a76d924d | 9252 | |
2ec845e7 TT |
9253 | scoped_restore restore_timeout |
9254 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9255 | ||
a76d924d | 9256 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
9257 | |
9258 | switch (ret) | |
9259 | { | |
9260 | case PACKET_UNKNOWN: | |
9261 | error (_("Remote target does not support vFlashDone")); | |
9262 | case PACKET_ERROR: | |
9263 | error (_("Error finishing flash operation")); | |
9264 | default: | |
9265 | break; | |
9266 | } | |
9267 | } | |
9268 | ||
f6ac5f3d PA |
9269 | void |
9270 | remote_target::files_info () | |
c906108c SS |
9271 | { |
9272 | puts_filtered ("Debugging a target over a serial line.\n"); | |
9273 | } | |
9274 | \f | |
9275 | /* Stuff for dealing with the packets which are part of this protocol. | |
9276 | See comment at top of file for details. */ | |
9277 | ||
1927e618 PA |
9278 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
9279 | error to higher layers. Called when a serial error is detected. | |
9280 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
9281 | the system error message for errno at function entry and final dot |
9282 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
9283 | |
9284 | static void | |
5b6d1e4f | 9285 | unpush_and_perror (remote_target *target, const char *string) |
1927e618 | 9286 | { |
d6cb50a2 | 9287 | int saved_errno = errno; |
1927e618 | 9288 | |
5b6d1e4f | 9289 | remote_unpush_target (target); |
d6cb50a2 JK |
9290 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
9291 | safe_strerror (saved_errno)); | |
1927e618 PA |
9292 | } |
9293 | ||
048094ac PA |
9294 | /* Read a single character from the remote end. The current quit |
9295 | handler is overridden to avoid quitting in the middle of packet | |
9296 | sequence, as that would break communication with the remote server. | |
9297 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 9298 | |
6b8edb51 PA |
9299 | int |
9300 | remote_target::readchar (int timeout) | |
c906108c SS |
9301 | { |
9302 | int ch; | |
5d93a237 | 9303 | struct remote_state *rs = get_remote_state (); |
048094ac | 9304 | |
2ec845e7 | 9305 | { |
6b8edb51 PA |
9306 | scoped_restore restore_quit_target |
9307 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9308 | scoped_restore restore_quit |
6b8edb51 | 9309 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 9310 | |
2ec845e7 | 9311 | rs->got_ctrlc_during_io = 0; |
c906108c | 9312 | |
2ec845e7 | 9313 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 9314 | |
2ec845e7 TT |
9315 | if (rs->got_ctrlc_during_io) |
9316 | set_quit_flag (); | |
9317 | } | |
048094ac | 9318 | |
2acceee2 | 9319 | if (ch >= 0) |
0876f84a | 9320 | return ch; |
2acceee2 JM |
9321 | |
9322 | switch ((enum serial_rc) ch) | |
c906108c SS |
9323 | { |
9324 | case SERIAL_EOF: | |
5b6d1e4f | 9325 | remote_unpush_target (this); |
598d3636 | 9326 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 9327 | /* no return */ |
c906108c | 9328 | case SERIAL_ERROR: |
5b6d1e4f PA |
9329 | unpush_and_perror (this, _("Remote communication error. " |
9330 | "Target disconnected.")); | |
2acceee2 | 9331 | /* no return */ |
c906108c | 9332 | case SERIAL_TIMEOUT: |
2acceee2 | 9333 | break; |
c906108c | 9334 | } |
2acceee2 | 9335 | return ch; |
c906108c SS |
9336 | } |
9337 | ||
c33e31fd | 9338 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9339 | writing fails. The current quit handler is overridden to avoid |
9340 | quitting in the middle of packet sequence, as that would break | |
9341 | communication with the remote server. See | |
9342 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9343 | |
6b8edb51 PA |
9344 | void |
9345 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9346 | { |
5d93a237 | 9347 | struct remote_state *rs = get_remote_state (); |
048094ac | 9348 | |
6b8edb51 PA |
9349 | scoped_restore restore_quit_target |
9350 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9351 | scoped_restore restore_quit |
6b8edb51 | 9352 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9353 | |
9354 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9355 | |
9356 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9357 | { |
5b6d1e4f PA |
9358 | unpush_and_perror (this, _("Remote communication error. " |
9359 | "Target disconnected.")); | |
c33e31fd | 9360 | } |
048094ac PA |
9361 | |
9362 | if (rs->got_ctrlc_during_io) | |
9363 | set_quit_flag (); | |
c33e31fd PA |
9364 | } |
9365 | ||
b3ced9ba PA |
9366 | /* Return a string representing an escaped version of BUF, of len N. |
9367 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9368 | |
b3ced9ba | 9369 | static std::string |
6e5abd65 PA |
9370 | escape_buffer (const char *buf, int n) |
9371 | { | |
d7e74731 | 9372 | string_file stb; |
6e5abd65 | 9373 | |
d7e74731 PA |
9374 | stb.putstrn (buf, n, '\\'); |
9375 | return std::move (stb.string ()); | |
6e5abd65 PA |
9376 | } |
9377 | ||
c906108c SS |
9378 | /* Display a null-terminated packet on stdout, for debugging, using C |
9379 | string notation. */ | |
9380 | ||
9381 | static void | |
baa336ce | 9382 | print_packet (const char *buf) |
c906108c SS |
9383 | { |
9384 | puts_filtered ("\""); | |
43e526b9 | 9385 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
9386 | puts_filtered ("\""); |
9387 | } | |
9388 | ||
9389 | int | |
6b8edb51 | 9390 | remote_target::putpkt (const char *buf) |
c906108c SS |
9391 | { |
9392 | return putpkt_binary (buf, strlen (buf)); | |
9393 | } | |
9394 | ||
6b8edb51 PA |
9395 | /* Wrapper around remote_target::putpkt to avoid exporting |
9396 | remote_target. */ | |
9397 | ||
9398 | int | |
9399 | putpkt (remote_target *remote, const char *buf) | |
9400 | { | |
9401 | return remote->putpkt (buf); | |
9402 | } | |
9403 | ||
c906108c | 9404 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9405 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9406 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9407 | and for a possible /0 if we are debugging (remote_debug) and want |
9408 | to print the sent packet as a string. */ | |
c906108c | 9409 | |
6b8edb51 PA |
9410 | int |
9411 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9412 | { |
2d717e4f | 9413 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9414 | int i; |
9415 | unsigned char csum = 0; | |
b80406ac TT |
9416 | gdb::def_vector<char> data (cnt + 6); |
9417 | char *buf2 = data.data (); | |
085dd6e6 | 9418 | |
c906108c SS |
9419 | int ch; |
9420 | int tcount = 0; | |
9421 | char *p; | |
9422 | ||
e24a49d8 PA |
9423 | /* Catch cases like trying to read memory or listing threads while |
9424 | we're waiting for a stop reply. The remote server wouldn't be | |
9425 | ready to handle this request, so we'd hang and timeout. We don't | |
9426 | have to worry about this in synchronous mode, because in that | |
9427 | case it's not possible to issue a command while the target is | |
74531fed PA |
9428 | running. This is not a problem in non-stop mode, because in that |
9429 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9430 | if (!target_is_non_stop_p () |
9431 | && target_is_async_p () | |
9432 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9433 | { |
9434 | error (_("Cannot execute this command while the target is running.\n" | |
9435 | "Use the \"interrupt\" command to stop the target\n" | |
9436 | "and then try again.")); | |
9437 | } | |
e24a49d8 | 9438 | |
2d717e4f DJ |
9439 | /* We're sending out a new packet. Make sure we don't look at a |
9440 | stale cached response. */ | |
9441 | rs->cached_wait_status = 0; | |
9442 | ||
c906108c SS |
9443 | /* Copy the packet into buffer BUF2, encapsulating it |
9444 | and giving it a checksum. */ | |
9445 | ||
c906108c SS |
9446 | p = buf2; |
9447 | *p++ = '$'; | |
9448 | ||
9449 | for (i = 0; i < cnt; i++) | |
9450 | { | |
9451 | csum += buf[i]; | |
9452 | *p++ = buf[i]; | |
9453 | } | |
9454 | *p++ = '#'; | |
9455 | *p++ = tohex ((csum >> 4) & 0xf); | |
9456 | *p++ = tohex (csum & 0xf); | |
9457 | ||
9458 | /* Send it over and over until we get a positive ack. */ | |
9459 | ||
9460 | while (1) | |
9461 | { | |
c906108c SS |
9462 | if (remote_debug) |
9463 | { | |
9464 | *p = '\0'; | |
b3ced9ba | 9465 | |
6f8976bf | 9466 | int len = (int) (p - buf2); |
6cc8564b LM |
9467 | int max_chars; |
9468 | ||
9469 | if (remote_packet_max_chars < 0) | |
9470 | max_chars = len; | |
9471 | else | |
9472 | max_chars = remote_packet_max_chars; | |
6f8976bf YQ |
9473 | |
9474 | std::string str | |
6cc8564b | 9475 | = escape_buffer (buf2, std::min (len, max_chars)); |
6f8976bf | 9476 | |
6cc8564b | 9477 | if (len > max_chars) |
2189c312 SM |
9478 | remote_debug_printf_nofunc |
9479 | ("Sending packet: %s [%d bytes omitted]", str.c_str (), | |
9480 | len - max_chars); | |
9481 | else | |
9482 | remote_debug_printf_nofunc ("Sending packet: %s", str.c_str ()); | |
c906108c | 9483 | } |
c33e31fd | 9484 | remote_serial_write (buf2, p - buf2); |
c906108c | 9485 | |
a6f3e723 SL |
9486 | /* If this is a no acks version of the remote protocol, send the |
9487 | packet and move on. */ | |
9488 | if (rs->noack_mode) | |
dda83cd7 | 9489 | break; |
a6f3e723 | 9490 | |
74531fed PA |
9491 | /* Read until either a timeout occurs (-2) or '+' is read. |
9492 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9493 | while (1) |
9494 | { | |
9495 | ch = readchar (remote_timeout); | |
9496 | ||
c906108c SS |
9497 | switch (ch) |
9498 | { | |
9499 | case '+': | |
2189c312 | 9500 | remote_debug_printf_nofunc ("Received Ack"); |
c906108c | 9501 | return 1; |
1216fa2c | 9502 | case '-': |
2189c312 | 9503 | remote_debug_printf_nofunc ("Received Nak"); |
a17d146e | 9504 | /* FALLTHROUGH */ |
c906108c | 9505 | case SERIAL_TIMEOUT: |
c5aa993b | 9506 | tcount++; |
c906108c | 9507 | if (tcount > 3) |
b80406ac | 9508 | return 0; |
23860348 | 9509 | break; /* Retransmit buffer. */ |
c906108c SS |
9510 | case '$': |
9511 | { | |
2189c312 | 9512 | remote_debug_printf ("Packet instead of Ack, ignoring it"); |
d6f7abdf AC |
9513 | /* It's probably an old response sent because an ACK |
9514 | was lost. Gobble up the packet and ack it so it | |
9515 | doesn't get retransmitted when we resend this | |
9516 | packet. */ | |
6d820c5c | 9517 | skip_frame (); |
c33e31fd | 9518 | remote_serial_write ("+", 1); |
23860348 | 9519 | continue; /* Now, go look for +. */ |
c906108c | 9520 | } |
74531fed PA |
9521 | |
9522 | case '%': | |
9523 | { | |
9524 | int val; | |
9525 | ||
9526 | /* If we got a notification, handle it, and go back to looking | |
9527 | for an ack. */ | |
9528 | /* We've found the start of a notification. Now | |
9529 | collect the data. */ | |
8d64371b | 9530 | val = read_frame (&rs->buf); |
74531fed PA |
9531 | if (val >= 0) |
9532 | { | |
2189c312 SM |
9533 | remote_debug_printf_nofunc |
9534 | (" Notification received: %s", | |
9535 | escape_buffer (rs->buf.data (), val).c_str ()); | |
6e5abd65 | 9536 | |
8d64371b | 9537 | handle_notification (rs->notif_state, rs->buf.data ()); |
74531fed PA |
9538 | /* We're in sync now, rewait for the ack. */ |
9539 | tcount = 0; | |
9540 | } | |
9541 | else | |
2189c312 SM |
9542 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9543 | rs->buf.data ()); | |
74531fed PA |
9544 | continue; |
9545 | } | |
9546 | /* fall-through */ | |
c906108c | 9547 | default: |
2189c312 SM |
9548 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9549 | rs->buf.data ()); | |
c906108c SS |
9550 | continue; |
9551 | } | |
23860348 | 9552 | break; /* Here to retransmit. */ |
c906108c SS |
9553 | } |
9554 | ||
9555 | #if 0 | |
9556 | /* This is wrong. If doing a long backtrace, the user should be | |
dda83cd7 SM |
9557 | able to get out next time we call QUIT, without anything as |
9558 | violent as interrupt_query. If we want to provide a way out of | |
9559 | here without getting to the next QUIT, it should be based on | |
9560 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9561 | if (quit_flag) |
9562 | { | |
9563 | quit_flag = 0; | |
9564 | interrupt_query (); | |
9565 | } | |
9566 | #endif | |
9567 | } | |
a5c0808e | 9568 | |
a6f3e723 | 9569 | return 0; |
c906108c SS |
9570 | } |
9571 | ||
6d820c5c DJ |
9572 | /* Come here after finding the start of a frame when we expected an |
9573 | ack. Do our best to discard the rest of this packet. */ | |
9574 | ||
6b8edb51 PA |
9575 | void |
9576 | remote_target::skip_frame () | |
6d820c5c DJ |
9577 | { |
9578 | int c; | |
9579 | ||
9580 | while (1) | |
9581 | { | |
9582 | c = readchar (remote_timeout); | |
9583 | switch (c) | |
9584 | { | |
9585 | case SERIAL_TIMEOUT: | |
9586 | /* Nothing we can do. */ | |
9587 | return; | |
9588 | case '#': | |
9589 | /* Discard the two bytes of checksum and stop. */ | |
9590 | c = readchar (remote_timeout); | |
9591 | if (c >= 0) | |
9592 | c = readchar (remote_timeout); | |
9593 | ||
9594 | return; | |
9595 | case '*': /* Run length encoding. */ | |
9596 | /* Discard the repeat count. */ | |
9597 | c = readchar (remote_timeout); | |
9598 | if (c < 0) | |
9599 | return; | |
9600 | break; | |
9601 | default: | |
9602 | /* A regular character. */ | |
9603 | break; | |
9604 | } | |
9605 | } | |
9606 | } | |
9607 | ||
c906108c | 9608 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9609 | into *BUF, verifying the checksum, length, and handling run-length |
9610 | compression. NUL terminate the buffer. If there is not enough room, | |
8d64371b | 9611 | expand *BUF. |
c906108c | 9612 | |
c2d11a7d JM |
9613 | Returns -1 on error, number of characters in buffer (ignoring the |
9614 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9615 | SERIAL status indications). */ |
c2d11a7d | 9616 | |
6b8edb51 | 9617 | long |
8d64371b | 9618 | remote_target::read_frame (gdb::char_vector *buf_p) |
c906108c SS |
9619 | { |
9620 | unsigned char csum; | |
c2d11a7d | 9621 | long bc; |
c906108c | 9622 | int c; |
8d64371b | 9623 | char *buf = buf_p->data (); |
a6f3e723 | 9624 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9625 | |
9626 | csum = 0; | |
c2d11a7d | 9627 | bc = 0; |
c906108c SS |
9628 | |
9629 | while (1) | |
9630 | { | |
9631 | c = readchar (remote_timeout); | |
c906108c SS |
9632 | switch (c) |
9633 | { | |
9634 | case SERIAL_TIMEOUT: | |
2189c312 | 9635 | remote_debug_printf ("Timeout in mid-packet, retrying"); |
c2d11a7d | 9636 | return -1; |
2189c312 | 9637 | |
c906108c | 9638 | case '$': |
2189c312 | 9639 | remote_debug_printf ("Saw new packet start in middle of old one"); |
23860348 | 9640 | return -1; /* Start a new packet, count retries. */ |
2189c312 | 9641 | |
c906108c SS |
9642 | case '#': |
9643 | { | |
9644 | unsigned char pktcsum; | |
e1b09194 AC |
9645 | int check_0 = 0; |
9646 | int check_1 = 0; | |
c906108c | 9647 | |
c2d11a7d | 9648 | buf[bc] = '\0'; |
c906108c | 9649 | |
e1b09194 AC |
9650 | check_0 = readchar (remote_timeout); |
9651 | if (check_0 >= 0) | |
9652 | check_1 = readchar (remote_timeout); | |
802188a7 | 9653 | |
e1b09194 AC |
9654 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9655 | { | |
2189c312 | 9656 | remote_debug_printf ("Timeout in checksum, retrying"); |
e1b09194 AC |
9657 | return -1; |
9658 | } | |
9659 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 | 9660 | { |
2189c312 | 9661 | remote_debug_printf ("Communication error in checksum"); |
40e3f985 FN |
9662 | return -1; |
9663 | } | |
c906108c | 9664 | |
a6f3e723 SL |
9665 | /* Don't recompute the checksum; with no ack packets we |
9666 | don't have any way to indicate a packet retransmission | |
9667 | is necessary. */ | |
9668 | if (rs->noack_mode) | |
9669 | return bc; | |
9670 | ||
e1b09194 | 9671 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9672 | if (csum == pktcsum) |
dda83cd7 | 9673 | return bc; |
c906108c | 9674 | |
2189c312 SM |
9675 | remote_debug_printf |
9676 | ("Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s", | |
9677 | pktcsum, csum, escape_buffer (buf, bc).c_str ()); | |
6e5abd65 | 9678 | |
c2d11a7d | 9679 | /* Number of characters in buffer ignoring trailing |
dda83cd7 | 9680 | NULL. */ |
c2d11a7d | 9681 | return -1; |
c906108c | 9682 | } |
23860348 | 9683 | case '*': /* Run length encoding. */ |
dda83cd7 | 9684 | { |
c2c6d25f | 9685 | int repeat; |
c906108c | 9686 | |
a744cf53 | 9687 | csum += c; |
b4501125 AC |
9688 | c = readchar (remote_timeout); |
9689 | csum += c; | |
23860348 | 9690 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9691 | |
23860348 | 9692 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9693 | |
6d820c5c | 9694 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9695 | { |
8d64371b | 9696 | if (bc + repeat - 1 >= buf_p->size () - 1) |
6d820c5c DJ |
9697 | { |
9698 | /* Make some more room in the buffer. */ | |
8d64371b TT |
9699 | buf_p->resize (buf_p->size () + repeat); |
9700 | buf = buf_p->data (); | |
6d820c5c DJ |
9701 | } |
9702 | ||
c2d11a7d JM |
9703 | memset (&buf[bc], buf[bc - 1], repeat); |
9704 | bc += repeat; | |
c2c6d25f JM |
9705 | continue; |
9706 | } | |
9707 | ||
c2d11a7d | 9708 | buf[bc] = '\0'; |
6d820c5c | 9709 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9710 | return -1; |
c2c6d25f | 9711 | } |
c906108c | 9712 | default: |
8d64371b | 9713 | if (bc >= buf_p->size () - 1) |
c906108c | 9714 | { |
6d820c5c | 9715 | /* Make some more room in the buffer. */ |
8d64371b TT |
9716 | buf_p->resize (buf_p->size () * 2); |
9717 | buf = buf_p->data (); | |
c906108c SS |
9718 | } |
9719 | ||
6d820c5c DJ |
9720 | buf[bc++] = c; |
9721 | csum += c; | |
9722 | continue; | |
c906108c SS |
9723 | } |
9724 | } | |
9725 | } | |
9726 | ||
ed2b7c17 TT |
9727 | /* Set this to the maximum number of seconds to wait instead of waiting forever |
9728 | in target_wait(). If this timer times out, then it generates an error and | |
9729 | the command is aborted. This replaces most of the need for timeouts in the | |
9730 | GDB test suite, and makes it possible to distinguish between a hung target | |
9731 | and one with slow communications. */ | |
9732 | ||
9733 | static int watchdog = 0; | |
9734 | static void | |
9735 | show_watchdog (struct ui_file *file, int from_tty, | |
9736 | struct cmd_list_element *c, const char *value) | |
9737 | { | |
9738 | fprintf_filtered (file, _("Watchdog timer is %s.\n"), value); | |
9739 | } | |
9740 | ||
c906108c | 9741 | /* Read a packet from the remote machine, with error checking, and |
8d64371b TT |
9742 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9743 | FOREVER, wait forever rather than timing out; this is used (in | |
9744 | synchronous mode) to wait for a target that is is executing user | |
9745 | code to stop. */ | |
d9fcf2fb JM |
9746 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9747 | don't have to change all the calls to getpkt to deal with the | |
9748 | return value, because at the moment I don't know what the right | |
23860348 | 9749 | thing to do it for those. */ |
6b8edb51 | 9750 | |
c906108c | 9751 | void |
8d64371b | 9752 | remote_target::getpkt (gdb::char_vector *buf, int forever) |
d9fcf2fb | 9753 | { |
8d64371b | 9754 | getpkt_sane (buf, forever); |
d9fcf2fb JM |
9755 | } |
9756 | ||
9757 | ||
9758 | /* Read a packet from the remote machine, with error checking, and | |
8d64371b TT |
9759 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9760 | FOREVER, wait forever rather than timing out; this is used (in | |
9761 | synchronous mode) to wait for a target that is is executing user | |
9762 | code to stop. If FOREVER == 0, this function is allowed to time | |
9763 | out gracefully and return an indication of this to the caller. | |
9764 | Otherwise return the number of bytes read. If EXPECTING_NOTIF, | |
9765 | consider receiving a notification enough reason to return to the | |
9766 | caller. *IS_NOTIF is an output boolean that indicates whether *BUF | |
9767 | holds a notification or not (a regular packet). */ | |
74531fed | 9768 | |
6b8edb51 | 9769 | int |
8d64371b | 9770 | remote_target::getpkt_or_notif_sane_1 (gdb::char_vector *buf, |
6b8edb51 PA |
9771 | int forever, int expecting_notif, |
9772 | int *is_notif) | |
c906108c | 9773 | { |
2d717e4f | 9774 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9775 | int c; |
9776 | int tries; | |
9777 | int timeout; | |
df4b58fe | 9778 | int val = -1; |
c906108c | 9779 | |
2d717e4f DJ |
9780 | /* We're reading a new response. Make sure we don't look at a |
9781 | previously cached response. */ | |
9782 | rs->cached_wait_status = 0; | |
9783 | ||
8d64371b | 9784 | strcpy (buf->data (), "timeout"); |
c906108c SS |
9785 | |
9786 | if (forever) | |
74531fed PA |
9787 | timeout = watchdog > 0 ? watchdog : -1; |
9788 | else if (expecting_notif) | |
9789 | timeout = 0; /* There should already be a char in the buffer. If | |
9790 | not, bail out. */ | |
c906108c SS |
9791 | else |
9792 | timeout = remote_timeout; | |
9793 | ||
9794 | #define MAX_TRIES 3 | |
9795 | ||
74531fed PA |
9796 | /* Process any number of notifications, and then return when |
9797 | we get a packet. */ | |
9798 | for (;;) | |
c906108c | 9799 | { |
d9c43928 | 9800 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9801 | times. */ |
9802 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9803 | { |
74531fed PA |
9804 | /* This can loop forever if the remote side sends us |
9805 | characters continuously, but if it pauses, we'll get | |
9806 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9807 | we'll count that as a retry. | |
9808 | ||
9809 | Note that even when forever is set, we will only wait | |
9810 | forever prior to the start of a packet. After that, we | |
9811 | expect characters to arrive at a brisk pace. They should | |
9812 | show up within remote_timeout intervals. */ | |
9813 | do | |
9814 | c = readchar (timeout); | |
9815 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9816 | |
9817 | if (c == SERIAL_TIMEOUT) | |
9818 | { | |
74531fed PA |
9819 | if (expecting_notif) |
9820 | return -1; /* Don't complain, it's normal to not get | |
9821 | anything in this case. */ | |
9822 | ||
23860348 | 9823 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9824 | { |
5b6d1e4f | 9825 | remote_unpush_target (this); |
598d3636 JK |
9826 | throw_error (TARGET_CLOSE_ERROR, |
9827 | _("Watchdog timeout has expired. " | |
9828 | "Target detached.")); | |
c906108c | 9829 | } |
2189c312 SM |
9830 | |
9831 | remote_debug_printf ("Timed out."); | |
c906108c | 9832 | } |
74531fed PA |
9833 | else |
9834 | { | |
9835 | /* We've found the start of a packet or notification. | |
9836 | Now collect the data. */ | |
8d64371b | 9837 | val = read_frame (buf); |
74531fed PA |
9838 | if (val >= 0) |
9839 | break; | |
9840 | } | |
9841 | ||
c33e31fd | 9842 | remote_serial_write ("-", 1); |
c906108c | 9843 | } |
c906108c | 9844 | |
74531fed PA |
9845 | if (tries > MAX_TRIES) |
9846 | { | |
9847 | /* We have tried hard enough, and just can't receive the | |
9848 | packet/notification. Give up. */ | |
9849 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9850 | |
74531fed PA |
9851 | /* Skip the ack char if we're in no-ack mode. */ |
9852 | if (!rs->noack_mode) | |
c33e31fd | 9853 | remote_serial_write ("+", 1); |
74531fed PA |
9854 | return -1; |
9855 | } | |
c906108c | 9856 | |
74531fed PA |
9857 | /* If we got an ordinary packet, return that to our caller. */ |
9858 | if (c == '$') | |
c906108c SS |
9859 | { |
9860 | if (remote_debug) | |
43e526b9 | 9861 | { |
6cc8564b LM |
9862 | int max_chars; |
9863 | ||
9864 | if (remote_packet_max_chars < 0) | |
9865 | max_chars = val; | |
9866 | else | |
9867 | max_chars = remote_packet_max_chars; | |
9868 | ||
6f8976bf | 9869 | std::string str |
8d64371b | 9870 | = escape_buffer (buf->data (), |
6cc8564b | 9871 | std::min (val, max_chars)); |
6f8976bf | 9872 | |
6cc8564b | 9873 | if (val > max_chars) |
2189c312 SM |
9874 | remote_debug_printf_nofunc |
9875 | ("Packet received: %s [%d bytes omitted]", str.c_str (), | |
9876 | val - max_chars); | |
9877 | else | |
9878 | remote_debug_printf_nofunc ("Packet received: %s", | |
9879 | str.c_str ()); | |
43e526b9 | 9880 | } |
a6f3e723 SL |
9881 | |
9882 | /* Skip the ack char if we're in no-ack mode. */ | |
9883 | if (!rs->noack_mode) | |
c33e31fd | 9884 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9885 | if (is_notif != NULL) |
9886 | *is_notif = 0; | |
0876f84a | 9887 | return val; |
c906108c SS |
9888 | } |
9889 | ||
74531fed PA |
9890 | /* If we got a notification, handle it, and go back to looking |
9891 | for a packet. */ | |
9892 | else | |
9893 | { | |
9894 | gdb_assert (c == '%'); | |
9895 | ||
2189c312 SM |
9896 | remote_debug_printf_nofunc |
9897 | (" Notification received: %s", | |
9898 | escape_buffer (buf->data (), val).c_str ()); | |
6e5abd65 | 9899 | |
fee9eda9 YQ |
9900 | if (is_notif != NULL) |
9901 | *is_notif = 1; | |
c906108c | 9902 | |
8d64371b | 9903 | handle_notification (rs->notif_state, buf->data ()); |
c906108c | 9904 | |
74531fed | 9905 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9906 | |
74531fed | 9907 | if (expecting_notif) |
fee9eda9 | 9908 | return val; |
74531fed PA |
9909 | } |
9910 | } | |
9911 | } | |
9912 | ||
6b8edb51 | 9913 | int |
8d64371b | 9914 | remote_target::getpkt_sane (gdb::char_vector *buf, int forever) |
74531fed | 9915 | { |
8d64371b | 9916 | return getpkt_or_notif_sane_1 (buf, forever, 0, NULL); |
74531fed PA |
9917 | } |
9918 | ||
6b8edb51 | 9919 | int |
8d64371b | 9920 | remote_target::getpkt_or_notif_sane (gdb::char_vector *buf, int forever, |
6b8edb51 | 9921 | int *is_notif) |
74531fed | 9922 | { |
8d64371b | 9923 | return getpkt_or_notif_sane_1 (buf, forever, 1, is_notif); |
c906108c | 9924 | } |
74531fed | 9925 | |
cbb8991c DB |
9926 | /* Kill any new fork children of process PID that haven't been |
9927 | processed by follow_fork. */ | |
9928 | ||
6b8edb51 PA |
9929 | void |
9930 | remote_target::kill_new_fork_children (int pid) | |
cbb8991c | 9931 | { |
6b8edb51 | 9932 | remote_state *rs = get_remote_state (); |
cbb8991c | 9933 | struct notif_client *notif = ¬if_client_stop; |
cbb8991c DB |
9934 | |
9935 | /* Kill the fork child threads of any threads in process PID | |
9936 | that are stopped at a fork event. */ | |
5b6d1e4f | 9937 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c DB |
9938 | { |
9939 | struct target_waitstatus *ws = &thread->pending_follow; | |
9940 | ||
9941 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9942 | { | |
953edf2b | 9943 | int child_pid = ws->value.related_pid.pid (); |
cbb8991c DB |
9944 | int res; |
9945 | ||
6b8edb51 | 9946 | res = remote_vkill (child_pid); |
cbb8991c DB |
9947 | if (res != 0) |
9948 | error (_("Can't kill fork child process %d"), child_pid); | |
9949 | } | |
9950 | } | |
9951 | ||
9952 | /* Check for any pending fork events (not reported or processed yet) | |
9953 | in process PID and kill those fork child threads as well. */ | |
9954 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
9955 | for (auto &event : rs->stop_reply_queue) |
9956 | if (is_pending_fork_parent (&event->ws, pid, event->ptid)) | |
9957 | { | |
9958 | int child_pid = event->ws.value.related_pid.pid (); | |
9959 | int res; | |
9960 | ||
9961 | res = remote_vkill (child_pid); | |
9962 | if (res != 0) | |
9963 | error (_("Can't kill fork child process %d"), child_pid); | |
9964 | } | |
cbb8991c DB |
9965 | } |
9966 | ||
c906108c | 9967 | \f |
8020350c DB |
9968 | /* Target hook to kill the current inferior. */ |
9969 | ||
f6ac5f3d PA |
9970 | void |
9971 | remote_target::kill () | |
43ff13b4 | 9972 | { |
8020350c | 9973 | int res = -1; |
e99b03dc | 9974 | int pid = inferior_ptid.pid (); |
8020350c | 9975 | struct remote_state *rs = get_remote_state (); |
0fdf84ca | 9976 | |
8020350c | 9977 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9978 | { |
8020350c DB |
9979 | /* If we're stopped while forking and we haven't followed yet, |
9980 | kill the child task. We need to do this before killing the | |
9981 | parent task because if this is a vfork then the parent will | |
9982 | be sleeping. */ | |
6b8edb51 | 9983 | kill_new_fork_children (pid); |
8020350c | 9984 | |
6b8edb51 | 9985 | res = remote_vkill (pid); |
8020350c | 9986 | if (res == 0) |
0fdf84ca | 9987 | { |
bc1e6c81 | 9988 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9989 | return; |
9990 | } | |
8020350c | 9991 | } |
0fdf84ca | 9992 | |
8020350c DB |
9993 | /* If we are in 'target remote' mode and we are killing the only |
9994 | inferior, then we will tell gdbserver to exit and unpush the | |
9995 | target. */ | |
9996 | if (res == -1 && !remote_multi_process_p (rs) | |
5b6d1e4f | 9997 | && number_of_live_inferiors (this) == 1) |
8020350c DB |
9998 | { |
9999 | remote_kill_k (); | |
10000 | ||
10001 | /* We've killed the remote end, we get to mourn it. If we are | |
10002 | not in extended mode, mourning the inferior also unpushes | |
10003 | remote_ops from the target stack, which closes the remote | |
10004 | connection. */ | |
bc1e6c81 | 10005 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
10006 | |
10007 | return; | |
0fdf84ca | 10008 | } |
43ff13b4 | 10009 | |
8020350c | 10010 | error (_("Can't kill process")); |
43ff13b4 JM |
10011 | } |
10012 | ||
8020350c DB |
10013 | /* Send a kill request to the target using the 'vKill' packet. */ |
10014 | ||
6b8edb51 PA |
10015 | int |
10016 | remote_target::remote_vkill (int pid) | |
82f73884 | 10017 | { |
4082afcc | 10018 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
10019 | return -1; |
10020 | ||
6b8edb51 PA |
10021 | remote_state *rs = get_remote_state (); |
10022 | ||
82f73884 | 10023 | /* Tell the remote target to detach. */ |
8d64371b | 10024 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vKill;%x", pid); |
82f73884 | 10025 | putpkt (rs->buf); |
8d64371b | 10026 | getpkt (&rs->buf, 0); |
82f73884 | 10027 | |
4082afcc PA |
10028 | switch (packet_ok (rs->buf, |
10029 | &remote_protocol_packets[PACKET_vKill])) | |
10030 | { | |
10031 | case PACKET_OK: | |
10032 | return 0; | |
10033 | case PACKET_ERROR: | |
10034 | return 1; | |
10035 | case PACKET_UNKNOWN: | |
10036 | return -1; | |
10037 | default: | |
10038 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
10039 | } | |
82f73884 PA |
10040 | } |
10041 | ||
8020350c DB |
10042 | /* Send a kill request to the target using the 'k' packet. */ |
10043 | ||
6b8edb51 PA |
10044 | void |
10045 | remote_target::remote_kill_k () | |
82f73884 | 10046 | { |
8020350c DB |
10047 | /* Catch errors so the user can quit from gdb even when we |
10048 | aren't on speaking terms with the remote system. */ | |
a70b8144 | 10049 | try |
82f73884 | 10050 | { |
82f73884 | 10051 | putpkt ("k"); |
82f73884 | 10052 | } |
230d2906 | 10053 | catch (const gdb_exception_error &ex) |
8020350c DB |
10054 | { |
10055 | if (ex.error == TARGET_CLOSE_ERROR) | |
10056 | { | |
10057 | /* If we got an (EOF) error that caused the target | |
10058 | to go away, then we're done, that's what we wanted. | |
10059 | "k" is susceptible to cause a premature EOF, given | |
10060 | that the remote server isn't actually required to | |
10061 | reply to "k", and it can happen that it doesn't | |
10062 | even get to reply ACK to the "k". */ | |
10063 | return; | |
10064 | } | |
82f73884 | 10065 | |
8020350c DB |
10066 | /* Otherwise, something went wrong. We didn't actually kill |
10067 | the target. Just propagate the exception, and let the | |
10068 | user or higher layers decide what to do. */ | |
eedc3f4f | 10069 | throw; |
8020350c | 10070 | } |
82f73884 PA |
10071 | } |
10072 | ||
f6ac5f3d PA |
10073 | void |
10074 | remote_target::mourn_inferior () | |
c906108c | 10075 | { |
8020350c | 10076 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 10077 | |
9607784a PA |
10078 | /* We're no longer interested in notification events of an inferior |
10079 | that exited or was killed/detached. */ | |
10080 | discard_pending_stop_replies (current_inferior ()); | |
10081 | ||
8020350c | 10082 | /* In 'target remote' mode with one inferior, we close the connection. */ |
5b6d1e4f | 10083 | if (!rs->extended && number_of_live_inferiors (this) <= 1) |
8020350c | 10084 | { |
5b6d1e4f | 10085 | remote_unpush_target (this); |
8020350c DB |
10086 | return; |
10087 | } | |
c906108c | 10088 | |
e24a49d8 PA |
10089 | /* In case we got here due to an error, but we're going to stay |
10090 | connected. */ | |
10091 | rs->waiting_for_stop_reply = 0; | |
10092 | ||
dc1981d7 PA |
10093 | /* If the current general thread belonged to the process we just |
10094 | detached from or has exited, the remote side current general | |
10095 | thread becomes undefined. Considering a case like this: | |
10096 | ||
10097 | - We just got here due to a detach. | |
10098 | - The process that we're detaching from happens to immediately | |
10099 | report a global breakpoint being hit in non-stop mode, in the | |
10100 | same thread we had selected before. | |
10101 | - GDB attaches to this process again. | |
10102 | - This event happens to be the next event we handle. | |
10103 | ||
10104 | GDB would consider that the current general thread didn't need to | |
10105 | be set on the stub side (with Hg), since for all it knew, | |
10106 | GENERAL_THREAD hadn't changed. | |
10107 | ||
10108 | Notice that although in all-stop mode, the remote server always | |
10109 | sets the current thread to the thread reporting the stop event, | |
10110 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
10111 | not* change the current thread when reporting a breakpoint hit, | |
10112 | due to the decoupling of event reporting and event handling. | |
10113 | ||
10114 | To keep things simple, we always invalidate our notion of the | |
10115 | current thread. */ | |
47f8a51d | 10116 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 10117 | |
8020350c | 10118 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 | 10119 | generic_mourn_inferior (); |
2d717e4f | 10120 | } |
c906108c | 10121 | |
57810aa7 | 10122 | bool |
f6ac5f3d | 10123 | extended_remote_target::supports_disable_randomization () |
03583c20 | 10124 | { |
4082afcc | 10125 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
10126 | } |
10127 | ||
6b8edb51 PA |
10128 | void |
10129 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
10130 | { |
10131 | struct remote_state *rs = get_remote_state (); | |
10132 | char *reply; | |
10133 | ||
8d64371b TT |
10134 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
10135 | "QDisableRandomization:%x", val); | |
03583c20 | 10136 | putpkt (rs->buf); |
b6bb3468 | 10137 | reply = remote_get_noisy_reply (); |
03583c20 UW |
10138 | if (*reply == '\0') |
10139 | error (_("Target does not support QDisableRandomization.")); | |
10140 | if (strcmp (reply, "OK") != 0) | |
10141 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
10142 | } | |
10143 | ||
6b8edb51 PA |
10144 | int |
10145 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
10146 | { |
10147 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 10148 | int len; |
94585166 | 10149 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 10150 | |
2d717e4f DJ |
10151 | /* If the user has disabled vRun support, or we have detected that |
10152 | support is not available, do not try it. */ | |
4082afcc | 10153 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 10154 | return -1; |
424163ea | 10155 | |
8d64371b TT |
10156 | strcpy (rs->buf.data (), "vRun;"); |
10157 | len = strlen (rs->buf.data ()); | |
c906108c | 10158 | |
2d717e4f DJ |
10159 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
10160 | error (_("Remote file name too long for run packet")); | |
8d64371b | 10161 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf.data () + len, |
9f1b45b0 | 10162 | strlen (remote_exec_file)); |
2d717e4f | 10163 | |
7c5ded6a | 10164 | if (!args.empty ()) |
2d717e4f | 10165 | { |
2d717e4f | 10166 | int i; |
2d717e4f | 10167 | |
773a1edc | 10168 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
10169 | for (i = 0; argv[i] != NULL; i++) |
10170 | { | |
10171 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
10172 | error (_("Argument list too long for run packet")); | |
10173 | rs->buf[len++] = ';'; | |
8d64371b | 10174 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf.data () + len, |
9f1b45b0 | 10175 | strlen (argv[i])); |
2d717e4f | 10176 | } |
2d717e4f DJ |
10177 | } |
10178 | ||
10179 | rs->buf[len++] = '\0'; | |
10180 | ||
10181 | putpkt (rs->buf); | |
8d64371b | 10182 | getpkt (&rs->buf, 0); |
2d717e4f | 10183 | |
4082afcc | 10184 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 10185 | { |
4082afcc | 10186 | case PACKET_OK: |
3405876a | 10187 | /* We have a wait response. All is well. */ |
2d717e4f | 10188 | return 0; |
4082afcc PA |
10189 | case PACKET_UNKNOWN: |
10190 | return -1; | |
10191 | case PACKET_ERROR: | |
2d717e4f DJ |
10192 | if (remote_exec_file[0] == '\0') |
10193 | error (_("Running the default executable on the remote target failed; " | |
10194 | "try \"set remote exec-file\"?")); | |
10195 | else | |
10196 | error (_("Running \"%s\" on the remote target failed"), | |
10197 | remote_exec_file); | |
4082afcc PA |
10198 | default: |
10199 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 10200 | } |
c906108c SS |
10201 | } |
10202 | ||
0a2dde4a SDJ |
10203 | /* Helper function to send set/unset environment packets. ACTION is |
10204 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
10205 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
10206 | sent. */ | |
10207 | ||
6b8edb51 PA |
10208 | void |
10209 | remote_target::send_environment_packet (const char *action, | |
10210 | const char *packet, | |
10211 | const char *value) | |
0a2dde4a | 10212 | { |
6b8edb51 PA |
10213 | remote_state *rs = get_remote_state (); |
10214 | ||
0a2dde4a SDJ |
10215 | /* Convert the environment variable to an hex string, which |
10216 | is the best format to be transmitted over the wire. */ | |
10217 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
10218 | strlen (value)); | |
10219 | ||
8d64371b | 10220 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
0a2dde4a SDJ |
10221 | "%s:%s", packet, encoded_value.c_str ()); |
10222 | ||
10223 | putpkt (rs->buf); | |
8d64371b TT |
10224 | getpkt (&rs->buf, 0); |
10225 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10226 | warning (_("Unable to %s environment variable '%s' on remote."), |
10227 | action, value); | |
10228 | } | |
10229 | ||
10230 | /* Helper function to handle the QEnvironment* packets. */ | |
10231 | ||
6b8edb51 PA |
10232 | void |
10233 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 10234 | { |
6b8edb51 PA |
10235 | remote_state *rs = get_remote_state (); |
10236 | ||
0a2dde4a SDJ |
10237 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
10238 | { | |
10239 | putpkt ("QEnvironmentReset"); | |
8d64371b TT |
10240 | getpkt (&rs->buf, 0); |
10241 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10242 | warning (_("Unable to reset environment on remote.")); |
10243 | } | |
10244 | ||
10245 | gdb_environ *e = ¤t_inferior ()->environment; | |
10246 | ||
10247 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
10248 | for (const std::string &el : e->user_set_env ()) | |
6b8edb51 | 10249 | send_environment_packet ("set", "QEnvironmentHexEncoded", |
0a2dde4a SDJ |
10250 | el.c_str ()); |
10251 | ||
10252 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
10253 | for (const std::string &el : e->user_unset_env ()) | |
6b8edb51 | 10254 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
10255 | } |
10256 | ||
bc3b087d SDJ |
10257 | /* Helper function to set the current working directory for the |
10258 | inferior in the remote target. */ | |
10259 | ||
6b8edb51 PA |
10260 | void |
10261 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d SDJ |
10262 | { |
10263 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
10264 | { | |
10265 | const char *inferior_cwd = get_inferior_cwd (); | |
6b8edb51 | 10266 | remote_state *rs = get_remote_state (); |
bc3b087d SDJ |
10267 | |
10268 | if (inferior_cwd != NULL) | |
10269 | { | |
10270 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
10271 | strlen (inferior_cwd)); | |
10272 | ||
8d64371b | 10273 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10274 | "QSetWorkingDir:%s", hexpath.c_str ()); |
10275 | } | |
10276 | else | |
10277 | { | |
10278 | /* An empty inferior_cwd means that the user wants us to | |
10279 | reset the remote server's inferior's cwd. */ | |
8d64371b | 10280 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10281 | "QSetWorkingDir:"); |
10282 | } | |
10283 | ||
10284 | putpkt (rs->buf); | |
8d64371b | 10285 | getpkt (&rs->buf, 0); |
bc3b087d SDJ |
10286 | if (packet_ok (rs->buf, |
10287 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
10288 | != PACKET_OK) | |
10289 | error (_("\ | |
10290 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10291 | directory: %s"), | |
8d64371b | 10292 | rs->buf.data ()); |
bc3b087d SDJ |
10293 | |
10294 | } | |
10295 | } | |
10296 | ||
2d717e4f DJ |
10297 | /* In the extended protocol we want to be able to do things like |
10298 | "run" and have them basically work as expected. So we need | |
10299 | a special create_inferior function. We support changing the | |
10300 | executable file and the command line arguments, but not the | |
10301 | environment. */ | |
10302 | ||
f6ac5f3d PA |
10303 | void |
10304 | extended_remote_target::create_inferior (const char *exec_file, | |
10305 | const std::string &args, | |
10306 | char **env, int from_tty) | |
43ff13b4 | 10307 | { |
3405876a PA |
10308 | int run_worked; |
10309 | char *stop_reply; | |
10310 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10311 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10312 | |
43ff13b4 | 10313 | /* If running asynchronously, register the target file descriptor |
23860348 | 10314 | with the event loop. */ |
75c99385 | 10315 | if (target_can_async_p ()) |
6a3753b3 | 10316 | target_async (1); |
43ff13b4 | 10317 | |
03583c20 | 10318 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10319 | if (supports_disable_randomization ()) |
03583c20 UW |
10320 | extended_remote_disable_randomization (disable_randomization); |
10321 | ||
aefd8b33 SDJ |
10322 | /* If startup-with-shell is on, we inform gdbserver to start the |
10323 | remote inferior using a shell. */ | |
10324 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
10325 | { | |
8d64371b | 10326 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
aefd8b33 SDJ |
10327 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); |
10328 | putpkt (rs->buf); | |
8d64371b TT |
10329 | getpkt (&rs->buf, 0); |
10330 | if (strcmp (rs->buf.data (), "OK") != 0) | |
aefd8b33 SDJ |
10331 | error (_("\ |
10332 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
8d64371b | 10333 | rs->buf.data ()); |
aefd8b33 SDJ |
10334 | } |
10335 | ||
6b8edb51 | 10336 | extended_remote_environment_support (); |
0a2dde4a | 10337 | |
6b8edb51 | 10338 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10339 | |
43ff13b4 | 10340 | /* Now restart the remote server. */ |
3405876a PA |
10341 | run_worked = extended_remote_run (args) != -1; |
10342 | if (!run_worked) | |
2d717e4f DJ |
10343 | { |
10344 | /* vRun was not supported. Fail if we need it to do what the | |
10345 | user requested. */ | |
10346 | if (remote_exec_file[0]) | |
10347 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10348 | if (!args.empty ()) |
65e65158 | 10349 | error (_("Remote target does not support \"set args\" or run ARGS")); |
43ff13b4 | 10350 | |
2d717e4f DJ |
10351 | /* Fall back to "R". */ |
10352 | extended_remote_restart (); | |
10353 | } | |
424163ea | 10354 | |
3405876a | 10355 | /* vRun's success return is a stop reply. */ |
8d64371b | 10356 | stop_reply = run_worked ? rs->buf.data () : NULL; |
3405876a | 10357 | add_current_inferior_and_thread (stop_reply); |
c0a2216e | 10358 | |
2d717e4f DJ |
10359 | /* Get updated offsets, if the stub uses qOffsets. */ |
10360 | get_offsets (); | |
2d717e4f | 10361 | } |
c906108c | 10362 | \f |
c5aa993b | 10363 | |
b775012e LM |
10364 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10365 | the list of conditions (in agent expression bytecode format), if any, the | |
10366 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10367 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10368 | |
10369 | static int | |
10370 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10371 | struct bp_target_info *bp_tgt, char *buf, |
10372 | char *buf_end) | |
b775012e | 10373 | { |
3cde5c42 | 10374 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10375 | return 0; |
10376 | ||
10377 | buf += strlen (buf); | |
bba74b36 | 10378 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10379 | buf++; |
10380 | ||
83621223 | 10381 | /* Send conditions to the target. */ |
d538e36d | 10382 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10383 | { |
bba74b36 | 10384 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10385 | buf += strlen (buf); |
3cde5c42 | 10386 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10387 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10388 | *buf = '\0'; | |
10389 | } | |
b775012e LM |
10390 | return 0; |
10391 | } | |
10392 | ||
d3ce09f5 SS |
10393 | static void |
10394 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10395 | struct bp_target_info *bp_tgt, char *buf) | |
10396 | { | |
3cde5c42 | 10397 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10398 | return; |
10399 | ||
10400 | buf += strlen (buf); | |
10401 | ||
10402 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10403 | buf += strlen (buf); | |
10404 | ||
10405 | /* Concatenate all the agent expressions that are commands into the | |
10406 | cmds parameter. */ | |
df97be55 | 10407 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10408 | { |
10409 | sprintf (buf, "X%x,", aexpr->len); | |
10410 | buf += strlen (buf); | |
3cde5c42 | 10411 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10412 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10413 | *buf = '\0'; | |
10414 | } | |
d3ce09f5 SS |
10415 | } |
10416 | ||
8181d85f DJ |
10417 | /* Insert a breakpoint. On targets that have software breakpoint |
10418 | support, we ask the remote target to do the work; on targets | |
10419 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10420 | |
f6ac5f3d PA |
10421 | int |
10422 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10423 | struct bp_target_info *bp_tgt) | |
c906108c | 10424 | { |
d471ea57 AC |
10425 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10426 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10427 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10428 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10429 | |
4082afcc | 10430 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10431 | { |
0d5ed153 | 10432 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10433 | struct remote_state *rs; |
bba74b36 | 10434 | char *p, *endbuf; |
4fff2411 | 10435 | |
28439a30 PA |
10436 | /* Make sure the remote is pointing at the right process, if |
10437 | necessary. */ | |
10438 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10439 | set_general_process (); | |
10440 | ||
4fff2411 | 10441 | rs = get_remote_state (); |
8d64371b TT |
10442 | p = rs->buf.data (); |
10443 | endbuf = p + get_remote_packet_size (); | |
802188a7 | 10444 | |
96baa820 JM |
10445 | *(p++) = 'Z'; |
10446 | *(p++) = '0'; | |
10447 | *(p++) = ','; | |
7c0f6dcc | 10448 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10449 | p += hexnumstr (p, addr); |
579c6ad9 | 10450 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10451 | |
f6ac5f3d | 10452 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10453 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10454 | |
f6ac5f3d | 10455 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10456 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10457 | ||
6d820c5c | 10458 | putpkt (rs->buf); |
8d64371b | 10459 | getpkt (&rs->buf, 0); |
96baa820 | 10460 | |
6d820c5c | 10461 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10462 | { |
d471ea57 AC |
10463 | case PACKET_ERROR: |
10464 | return -1; | |
10465 | case PACKET_OK: | |
10466 | return 0; | |
10467 | case PACKET_UNKNOWN: | |
10468 | break; | |
96baa820 JM |
10469 | } |
10470 | } | |
c906108c | 10471 | |
0000e5cc PA |
10472 | /* If this breakpoint has target-side commands but this stub doesn't |
10473 | support Z0 packets, throw error. */ | |
3cde5c42 | 10474 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10475 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10476 | Target doesn't support breakpoints that have target side commands.")); | |
10477 | ||
f6ac5f3d | 10478 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10479 | } |
10480 | ||
f6ac5f3d PA |
10481 | int |
10482 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10483 | struct bp_target_info *bp_tgt, | |
10484 | enum remove_bp_reason reason) | |
c906108c | 10485 | { |
8181d85f | 10486 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10487 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10488 | |
4082afcc | 10489 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10490 | { |
8d64371b TT |
10491 | char *p = rs->buf.data (); |
10492 | char *endbuf = p + get_remote_packet_size (); | |
802188a7 | 10493 | |
28439a30 PA |
10494 | /* Make sure the remote is pointing at the right process, if |
10495 | necessary. */ | |
10496 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10497 | set_general_process (); | |
10498 | ||
96baa820 JM |
10499 | *(p++) = 'z'; |
10500 | *(p++) = '0'; | |
10501 | *(p++) = ','; | |
10502 | ||
8181d85f DJ |
10503 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10504 | p += hexnumstr (p, addr); | |
579c6ad9 | 10505 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10506 | |
6d820c5c | 10507 | putpkt (rs->buf); |
8d64371b | 10508 | getpkt (&rs->buf, 0); |
96baa820 | 10509 | |
6d820c5c | 10510 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10511 | } |
10512 | ||
f6ac5f3d | 10513 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10514 | } |
10515 | ||
f486487f | 10516 | static enum Z_packet_type |
d471ea57 AC |
10517 | watchpoint_to_Z_packet (int type) |
10518 | { | |
10519 | switch (type) | |
10520 | { | |
10521 | case hw_write: | |
bb858e6a | 10522 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10523 | break; |
10524 | case hw_read: | |
bb858e6a | 10525 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10526 | break; |
10527 | case hw_access: | |
bb858e6a | 10528 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10529 | break; |
10530 | default: | |
8e65ff28 | 10531 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10532 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10533 | } |
10534 | } | |
10535 | ||
f6ac5f3d PA |
10536 | int |
10537 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10538 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10539 | { |
d01949b6 | 10540 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10541 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10542 | char *p; |
d471ea57 | 10543 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10544 | |
4082afcc | 10545 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10546 | return 1; |
802188a7 | 10547 | |
28439a30 PA |
10548 | /* Make sure the remote is pointing at the right process, if |
10549 | necessary. */ | |
10550 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10551 | set_general_process (); | |
10552 | ||
8d64371b TT |
10553 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "Z%x,", packet); |
10554 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10555 | addr = remote_address_masked (addr); |
10556 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10557 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10558 | |
6d820c5c | 10559 | putpkt (rs->buf); |
8d64371b | 10560 | getpkt (&rs->buf, 0); |
96baa820 | 10561 | |
6d820c5c | 10562 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10563 | { |
10564 | case PACKET_ERROR: | |
d471ea57 | 10565 | return -1; |
85d721b8 PA |
10566 | case PACKET_UNKNOWN: |
10567 | return 1; | |
d471ea57 AC |
10568 | case PACKET_OK: |
10569 | return 0; | |
10570 | } | |
8e65ff28 | 10571 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10572 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10573 | } |
10574 | ||
57810aa7 | 10575 | bool |
f6ac5f3d PA |
10576 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10577 | CORE_ADDR start, int length) | |
283002cf MR |
10578 | { |
10579 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10580 | ||
10581 | return diff < length; | |
10582 | } | |
10583 | ||
d471ea57 | 10584 | |
f6ac5f3d PA |
10585 | int |
10586 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10587 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10588 | { |
d01949b6 | 10589 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10590 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10591 | char *p; |
d471ea57 AC |
10592 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10593 | ||
4082afcc | 10594 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10595 | return -1; |
802188a7 | 10596 | |
28439a30 PA |
10597 | /* Make sure the remote is pointing at the right process, if |
10598 | necessary. */ | |
10599 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10600 | set_general_process (); | |
10601 | ||
8d64371b TT |
10602 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "z%x,", packet); |
10603 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10604 | addr = remote_address_masked (addr); |
10605 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10606 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c | 10607 | putpkt (rs->buf); |
8d64371b | 10608 | getpkt (&rs->buf, 0); |
96baa820 | 10609 | |
6d820c5c | 10610 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10611 | { |
10612 | case PACKET_ERROR: | |
10613 | case PACKET_UNKNOWN: | |
10614 | return -1; | |
10615 | case PACKET_OK: | |
10616 | return 0; | |
10617 | } | |
8e65ff28 | 10618 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10619 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10620 | } |
10621 | ||
3c3bea1c | 10622 | |
60fcc1c3 TT |
10623 | static int remote_hw_watchpoint_limit = -1; |
10624 | static int remote_hw_watchpoint_length_limit = -1; | |
10625 | static int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 10626 | |
f6ac5f3d PA |
10627 | int |
10628 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10629 | { |
10630 | if (remote_hw_watchpoint_length_limit == 0) | |
10631 | return 0; | |
10632 | else if (remote_hw_watchpoint_length_limit < 0) | |
10633 | return 1; | |
10634 | else if (len <= remote_hw_watchpoint_length_limit) | |
10635 | return 1; | |
10636 | else | |
10637 | return 0; | |
10638 | } | |
10639 | ||
f6ac5f3d PA |
10640 | int |
10641 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10642 | { |
3c3bea1c GS |
10643 | if (type == bp_hardware_breakpoint) |
10644 | { | |
10645 | if (remote_hw_breakpoint_limit == 0) | |
10646 | return 0; | |
501eef12 AC |
10647 | else if (remote_hw_breakpoint_limit < 0) |
10648 | return 1; | |
3c3bea1c GS |
10649 | else if (cnt <= remote_hw_breakpoint_limit) |
10650 | return 1; | |
10651 | } | |
10652 | else | |
10653 | { | |
10654 | if (remote_hw_watchpoint_limit == 0) | |
10655 | return 0; | |
501eef12 AC |
10656 | else if (remote_hw_watchpoint_limit < 0) |
10657 | return 1; | |
3c3bea1c GS |
10658 | else if (ot) |
10659 | return -1; | |
10660 | else if (cnt <= remote_hw_watchpoint_limit) | |
10661 | return 1; | |
10662 | } | |
10663 | return -1; | |
10664 | } | |
10665 | ||
f7e6eed5 PA |
10666 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10667 | ||
57810aa7 | 10668 | bool |
f6ac5f3d | 10669 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10670 | { |
799a2abe | 10671 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10672 | |
799a2abe | 10673 | return (thread->priv != NULL |
7aabaf9d SM |
10674 | && (get_remote_thread_info (thread)->stop_reason |
10675 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10676 | } |
10677 | ||
10678 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10679 | remote. */ | |
10680 | ||
57810aa7 | 10681 | bool |
f6ac5f3d | 10682 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10683 | { |
f7e6eed5 PA |
10684 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10685 | } | |
10686 | ||
10687 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10688 | ||
57810aa7 | 10689 | bool |
f6ac5f3d | 10690 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10691 | { |
799a2abe | 10692 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10693 | |
799a2abe | 10694 | return (thread->priv != NULL |
7aabaf9d SM |
10695 | && (get_remote_thread_info (thread)->stop_reason |
10696 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10697 | } |
10698 | ||
10699 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10700 | remote. */ | |
10701 | ||
57810aa7 | 10702 | bool |
f6ac5f3d | 10703 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10704 | { |
f7e6eed5 PA |
10705 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10706 | } | |
10707 | ||
57810aa7 | 10708 | bool |
f6ac5f3d | 10709 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10710 | { |
799a2abe | 10711 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10712 | |
799a2abe | 10713 | return (thread->priv != NULL |
7aabaf9d SM |
10714 | && (get_remote_thread_info (thread)->stop_reason |
10715 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10716 | } |
10717 | ||
57810aa7 | 10718 | bool |
f6ac5f3d | 10719 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10720 | { |
799a2abe | 10721 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10722 | |
799a2abe | 10723 | if (thread->priv != NULL |
7aabaf9d SM |
10724 | && (get_remote_thread_info (thread)->stop_reason |
10725 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10726 | { |
7aabaf9d | 10727 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10728 | return true; |
4aa7a7f5 JJ |
10729 | } |
10730 | ||
57810aa7 | 10731 | return false; |
3c3bea1c GS |
10732 | } |
10733 | ||
10734 | ||
f6ac5f3d PA |
10735 | int |
10736 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10737 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10738 | { |
0d5ed153 | 10739 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10740 | struct remote_state *rs; |
bba74b36 | 10741 | char *p, *endbuf; |
dd61ec5c | 10742 | char *message; |
3c3bea1c | 10743 | |
4082afcc | 10744 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10745 | return -1; |
2bc416ba | 10746 | |
28439a30 PA |
10747 | /* Make sure the remote is pointing at the right process, if |
10748 | necessary. */ | |
10749 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10750 | set_general_process (); | |
10751 | ||
4fff2411 | 10752 | rs = get_remote_state (); |
8d64371b TT |
10753 | p = rs->buf.data (); |
10754 | endbuf = p + get_remote_packet_size (); | |
4fff2411 | 10755 | |
96baa820 JM |
10756 | *(p++) = 'Z'; |
10757 | *(p++) = '1'; | |
10758 | *(p++) = ','; | |
802188a7 | 10759 | |
0d5ed153 | 10760 | addr = remote_address_masked (addr); |
96baa820 | 10761 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10762 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10763 | |
f6ac5f3d | 10764 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10765 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10766 | |
f6ac5f3d | 10767 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10768 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10769 | ||
6d820c5c | 10770 | putpkt (rs->buf); |
8d64371b | 10771 | getpkt (&rs->buf, 0); |
96baa820 | 10772 | |
6d820c5c | 10773 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10774 | { |
10775 | case PACKET_ERROR: | |
dd61ec5c | 10776 | if (rs->buf[1] == '.') |
dda83cd7 SM |
10777 | { |
10778 | message = strchr (&rs->buf[2], '.'); | |
10779 | if (message) | |
10780 | error (_("Remote failure reply: %s"), message + 1); | |
10781 | } | |
dd61ec5c | 10782 | return -1; |
d471ea57 AC |
10783 | case PACKET_UNKNOWN: |
10784 | return -1; | |
10785 | case PACKET_OK: | |
10786 | return 0; | |
10787 | } | |
8e65ff28 | 10788 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10789 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10790 | } |
10791 | ||
d471ea57 | 10792 | |
f6ac5f3d PA |
10793 | int |
10794 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10795 | struct bp_target_info *bp_tgt) | |
96baa820 | 10796 | { |
8181d85f | 10797 | CORE_ADDR addr; |
d01949b6 | 10798 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
10799 | char *p = rs->buf.data (); |
10800 | char *endbuf = p + get_remote_packet_size (); | |
c8189ed1 | 10801 | |
4082afcc | 10802 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10803 | return -1; |
802188a7 | 10804 | |
28439a30 PA |
10805 | /* Make sure the remote is pointing at the right process, if |
10806 | necessary. */ | |
10807 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10808 | set_general_process (); | |
10809 | ||
96baa820 JM |
10810 | *(p++) = 'z'; |
10811 | *(p++) = '1'; | |
10812 | *(p++) = ','; | |
802188a7 | 10813 | |
8181d85f | 10814 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10815 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10816 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10817 | |
6d820c5c | 10818 | putpkt (rs->buf); |
8d64371b | 10819 | getpkt (&rs->buf, 0); |
802188a7 | 10820 | |
6d820c5c | 10821 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10822 | { |
10823 | case PACKET_ERROR: | |
10824 | case PACKET_UNKNOWN: | |
10825 | return -1; | |
10826 | case PACKET_OK: | |
10827 | return 0; | |
10828 | } | |
8e65ff28 | 10829 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10830 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10831 | } |
96baa820 | 10832 | |
4a5e7a5b PA |
10833 | /* Verify memory using the "qCRC:" request. */ |
10834 | ||
f6ac5f3d PA |
10835 | int |
10836 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
10837 | { |
10838 | struct remote_state *rs = get_remote_state (); | |
10839 | unsigned long host_crc, target_crc; | |
10840 | char *tmp; | |
10841 | ||
936d2992 PA |
10842 | /* It doesn't make sense to use qCRC if the remote target is |
10843 | connected but not running. */ | |
55f6301a TT |
10844 | if (target_has_execution () |
10845 | && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
936d2992 PA |
10846 | { |
10847 | enum packet_result result; | |
28439a30 | 10848 | |
936d2992 PA |
10849 | /* Make sure the remote is pointing at the right process. */ |
10850 | set_general_process (); | |
4a5e7a5b | 10851 | |
936d2992 | 10852 | /* FIXME: assumes lma can fit into long. */ |
8d64371b | 10853 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qCRC:%lx,%lx", |
936d2992 PA |
10854 | (long) lma, (long) size); |
10855 | putpkt (rs->buf); | |
4a5e7a5b | 10856 | |
936d2992 PA |
10857 | /* Be clever; compute the host_crc before waiting for target |
10858 | reply. */ | |
10859 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10860 | ||
8d64371b | 10861 | getpkt (&rs->buf, 0); |
4a5e7a5b | 10862 | |
936d2992 PA |
10863 | result = packet_ok (rs->buf, |
10864 | &remote_protocol_packets[PACKET_qCRC]); | |
10865 | if (result == PACKET_ERROR) | |
10866 | return -1; | |
10867 | else if (result == PACKET_OK) | |
10868 | { | |
10869 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10870 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10871 | |
936d2992 PA |
10872 | return (host_crc == target_crc); |
10873 | } | |
10874 | } | |
4a5e7a5b | 10875 | |
f6ac5f3d | 10876 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
10877 | } |
10878 | ||
c906108c SS |
10879 | /* compare-sections command |
10880 | ||
10881 | With no arguments, compares each loadable section in the exec bfd | |
10882 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10883 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10884 | |
c906108c | 10885 | static void |
ac88e2de | 10886 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
10887 | { |
10888 | asection *s; | |
ce359b09 | 10889 | const char *sectname; |
c906108c SS |
10890 | bfd_size_type size; |
10891 | bfd_vma lma; | |
10892 | int matched = 0; | |
10893 | int mismatched = 0; | |
4a5e7a5b | 10894 | int res; |
95cf3b38 | 10895 | int read_only = 0; |
c906108c | 10896 | |
7e10abd1 | 10897 | if (!current_program_space->exec_bfd ()) |
8a3fe4f8 | 10898 | error (_("command cannot be used without an exec file")); |
c906108c | 10899 | |
95cf3b38 DT |
10900 | if (args != NULL && strcmp (args, "-r") == 0) |
10901 | { | |
10902 | read_only = 1; | |
10903 | args = NULL; | |
10904 | } | |
10905 | ||
7e10abd1 | 10906 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
c906108c SS |
10907 | { |
10908 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10909 | continue; /* Skip non-loadable section. */ |
c906108c | 10910 | |
95cf3b38 DT |
10911 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10912 | continue; /* Skip writeable sections */ | |
10913 | ||
fd361982 | 10914 | size = bfd_section_size (s); |
c906108c | 10915 | if (size == 0) |
0df8b418 | 10916 | continue; /* Skip zero-length section. */ |
c906108c | 10917 | |
fd361982 | 10918 | sectname = bfd_section_name (s); |
c906108c | 10919 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10920 | continue; /* Not the section selected by user. */ |
c906108c | 10921 | |
0df8b418 | 10922 | matched = 1; /* Do this section. */ |
c906108c | 10923 | lma = s->lma; |
c906108c | 10924 | |
b80406ac | 10925 | gdb::byte_vector sectdata (size); |
7e10abd1 TT |
10926 | bfd_get_section_contents (current_program_space->exec_bfd (), s, |
10927 | sectdata.data (), 0, size); | |
c906108c | 10928 | |
b80406ac | 10929 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
10930 | |
10931 | if (res == -1) | |
5af949e3 | 10932 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10933 | paddress (target_gdbarch (), lma), |
10934 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10935 | |
5af949e3 | 10936 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10937 | paddress (target_gdbarch (), lma), |
10938 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10939 | if (res) |
c906108c SS |
10940 | printf_filtered ("matched.\n"); |
10941 | else | |
c5aa993b JM |
10942 | { |
10943 | printf_filtered ("MIS-MATCHED!\n"); | |
10944 | mismatched++; | |
10945 | } | |
c906108c SS |
10946 | } |
10947 | if (mismatched > 0) | |
936d2992 | 10948 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10949 | the loaded file\n")); |
c906108c | 10950 | if (args && !matched) |
a3f17187 | 10951 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10952 | } |
10953 | ||
0e7f50da UW |
10954 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10955 | into remote target. The number of bytes written to the remote | |
10956 | target is returned, or -1 for error. */ | |
10957 | ||
6b8edb51 PA |
10958 | target_xfer_status |
10959 | remote_target::remote_write_qxfer (const char *object_name, | |
10960 | const char *annex, const gdb_byte *writebuf, | |
10961 | ULONGEST offset, LONGEST len, | |
10962 | ULONGEST *xfered_len, | |
10963 | struct packet_config *packet) | |
0e7f50da UW |
10964 | { |
10965 | int i, buf_len; | |
10966 | ULONGEST n; | |
0e7f50da UW |
10967 | struct remote_state *rs = get_remote_state (); |
10968 | int max_size = get_memory_write_packet_size (); | |
10969 | ||
7cc244de | 10970 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10971 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10972 | |
10973 | /* Insert header. */ | |
8d64371b | 10974 | i = snprintf (rs->buf.data (), max_size, |
0e7f50da UW |
10975 | "qXfer:%s:write:%s:%s:", |
10976 | object_name, annex ? annex : "", | |
10977 | phex_nz (offset, sizeof offset)); | |
10978 | max_size -= (i + 1); | |
10979 | ||
10980 | /* Escape as much data as fits into rs->buf. */ | |
10981 | buf_len = remote_escape_output | |
8d64371b | 10982 | (writebuf, len, 1, (gdb_byte *) rs->buf.data () + i, &max_size, max_size); |
0e7f50da | 10983 | |
8d64371b TT |
10984 | if (putpkt_binary (rs->buf.data (), i + buf_len) < 0 |
10985 | || getpkt_sane (&rs->buf, 0) < 0 | |
0e7f50da | 10986 | || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 10987 | return TARGET_XFER_E_IO; |
0e7f50da | 10988 | |
8d64371b | 10989 | unpack_varlen_hex (rs->buf.data (), &n); |
9b409511 YQ |
10990 | |
10991 | *xfered_len = n; | |
92ffd475 | 10992 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
10993 | } |
10994 | ||
0876f84a DJ |
10995 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10996 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10997 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10998 | The number of bytes read may be less than LEN without indicating an | |
10999 | EOF. PACKET is checked and updated to indicate whether the remote | |
11000 | target supports this object. */ | |
11001 | ||
6b8edb51 PA |
11002 | target_xfer_status |
11003 | remote_target::remote_read_qxfer (const char *object_name, | |
11004 | const char *annex, | |
11005 | gdb_byte *readbuf, ULONGEST offset, | |
11006 | LONGEST len, | |
11007 | ULONGEST *xfered_len, | |
11008 | struct packet_config *packet) | |
0876f84a | 11009 | { |
0876f84a | 11010 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
11011 | LONGEST i, n, packet_len; |
11012 | ||
7cc244de | 11013 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 11014 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11015 | |
11016 | /* Check whether we've cached an end-of-object packet that matches | |
11017 | this request. */ | |
8e88304f | 11018 | if (rs->finished_object) |
0876f84a | 11019 | { |
8e88304f TT |
11020 | if (strcmp (object_name, rs->finished_object) == 0 |
11021 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
11022 | && offset == rs->finished_offset) | |
9b409511 YQ |
11023 | return TARGET_XFER_EOF; |
11024 | ||
0876f84a DJ |
11025 | |
11026 | /* Otherwise, we're now reading something different. Discard | |
11027 | the cache. */ | |
8e88304f TT |
11028 | xfree (rs->finished_object); |
11029 | xfree (rs->finished_annex); | |
11030 | rs->finished_object = NULL; | |
11031 | rs->finished_annex = NULL; | |
0876f84a DJ |
11032 | } |
11033 | ||
11034 | /* Request only enough to fit in a single packet. The actual data | |
11035 | may not, since we don't know how much of it will need to be escaped; | |
11036 | the target is free to respond with slightly less data. We subtract | |
11037 | five to account for the response type and the protocol frame. */ | |
768adc05 | 11038 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
8d64371b TT |
11039 | snprintf (rs->buf.data (), get_remote_packet_size () - 4, |
11040 | "qXfer:%s:read:%s:%s,%s", | |
0876f84a DJ |
11041 | object_name, annex ? annex : "", |
11042 | phex_nz (offset, sizeof offset), | |
11043 | phex_nz (n, sizeof n)); | |
11044 | i = putpkt (rs->buf); | |
11045 | if (i < 0) | |
2ed4b548 | 11046 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11047 | |
11048 | rs->buf[0] = '\0'; | |
8d64371b | 11049 | packet_len = getpkt_sane (&rs->buf, 0); |
0876f84a | 11050 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 11051 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11052 | |
11053 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8d64371b | 11054 | error (_("Unknown remote qXfer reply: %s"), rs->buf.data ()); |
0876f84a DJ |
11055 | |
11056 | /* 'm' means there is (or at least might be) more data after this | |
11057 | batch. That does not make sense unless there's at least one byte | |
11058 | of data in this reply. */ | |
11059 | if (rs->buf[0] == 'm' && packet_len == 1) | |
11060 | error (_("Remote qXfer reply contained no data.")); | |
11061 | ||
11062 | /* Got some data. */ | |
8d64371b | 11063 | i = remote_unescape_input ((gdb_byte *) rs->buf.data () + 1, |
bc20a4af | 11064 | packet_len - 1, readbuf, n); |
0876f84a DJ |
11065 | |
11066 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
11067 | or possibly empty. If we have the final block of a non-empty |
11068 | object, record this fact to bypass a subsequent partial read. */ | |
11069 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 11070 | { |
8e88304f TT |
11071 | rs->finished_object = xstrdup (object_name); |
11072 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
11073 | rs->finished_offset = offset + i; | |
0876f84a DJ |
11074 | } |
11075 | ||
9b409511 YQ |
11076 | if (i == 0) |
11077 | return TARGET_XFER_EOF; | |
11078 | else | |
11079 | { | |
11080 | *xfered_len = i; | |
11081 | return TARGET_XFER_OK; | |
11082 | } | |
0876f84a DJ |
11083 | } |
11084 | ||
f6ac5f3d PA |
11085 | enum target_xfer_status |
11086 | remote_target::xfer_partial (enum target_object object, | |
11087 | const char *annex, gdb_byte *readbuf, | |
11088 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
11089 | ULONGEST *xfered_len) | |
c906108c | 11090 | { |
82f73884 | 11091 | struct remote_state *rs; |
c906108c | 11092 | int i; |
6d820c5c | 11093 | char *p2; |
1e3ff5ad | 11094 | char query_type; |
124e13d9 | 11095 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 11096 | |
e6e4e701 | 11097 | set_remote_traceframe (); |
82f73884 PA |
11098 | set_general_thread (inferior_ptid); |
11099 | ||
11100 | rs = get_remote_state (); | |
11101 | ||
b2182ed2 | 11102 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
11103 | if (object == TARGET_OBJECT_MEMORY) |
11104 | { | |
2d717e4f DJ |
11105 | /* If the remote target is connected but not running, we should |
11106 | pass this request down to a lower stratum (e.g. the executable | |
11107 | file). */ | |
55f6301a | 11108 | if (!target_has_execution ()) |
9b409511 | 11109 | return TARGET_XFER_EOF; |
2d717e4f | 11110 | |
21e3b9b9 | 11111 | if (writebuf != NULL) |
124e13d9 SM |
11112 | return remote_write_bytes (offset, writebuf, len, unit_size, |
11113 | xfered_len); | |
21e3b9b9 | 11114 | else |
6b8edb51 | 11115 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 11116 | xfered_len); |
21e3b9b9 DJ |
11117 | } |
11118 | ||
4aa995e1 PA |
11119 | /* Handle extra signal info using qxfer packets. */ |
11120 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
11121 | { | |
11122 | if (readbuf) | |
f6ac5f3d | 11123 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 11124 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
11125 | [PACKET_qXfer_siginfo_read]); |
11126 | else | |
f6ac5f3d | 11127 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 11128 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
11129 | &remote_protocol_packets |
11130 | [PACKET_qXfer_siginfo_write]); | |
11131 | } | |
11132 | ||
0fb4aa4b PA |
11133 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
11134 | { | |
11135 | if (readbuf) | |
f6ac5f3d | 11136 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 11137 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
11138 | &remote_protocol_packets |
11139 | [PACKET_qXfer_statictrace_read]); | |
11140 | else | |
2ed4b548 | 11141 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
11142 | } |
11143 | ||
a76d924d DJ |
11144 | /* Only handle flash writes. */ |
11145 | if (writebuf != NULL) | |
11146 | { | |
a76d924d DJ |
11147 | switch (object) |
11148 | { | |
11149 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 11150 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 11151 | writebuf); |
a76d924d DJ |
11152 | |
11153 | default: | |
2ed4b548 | 11154 | return TARGET_XFER_E_IO; |
a76d924d DJ |
11155 | } |
11156 | } | |
4b8a223f | 11157 | |
1e3ff5ad AC |
11158 | /* Map pre-existing objects onto letters. DO NOT do this for new |
11159 | objects!!! Instead specify new query packets. */ | |
11160 | switch (object) | |
c906108c | 11161 | { |
1e3ff5ad AC |
11162 | case TARGET_OBJECT_AVR: |
11163 | query_type = 'R'; | |
11164 | break; | |
802188a7 RM |
11165 | |
11166 | case TARGET_OBJECT_AUXV: | |
0876f84a | 11167 | gdb_assert (annex == NULL); |
f6ac5f3d | 11168 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 11169 | xfered_len, |
0876f84a | 11170 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 11171 | |
23181151 DJ |
11172 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
11173 | return remote_read_qxfer | |
f6ac5f3d | 11174 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
11175 | &remote_protocol_packets[PACKET_qXfer_features]); |
11176 | ||
cfa9d6d9 DJ |
11177 | case TARGET_OBJECT_LIBRARIES: |
11178 | return remote_read_qxfer | |
f6ac5f3d | 11179 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
11180 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
11181 | ||
2268b414 JK |
11182 | case TARGET_OBJECT_LIBRARIES_SVR4: |
11183 | return remote_read_qxfer | |
f6ac5f3d | 11184 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
11185 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
11186 | ||
fd79ecee DJ |
11187 | case TARGET_OBJECT_MEMORY_MAP: |
11188 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11189 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 11190 | xfered_len, |
fd79ecee DJ |
11191 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
11192 | ||
07e059b5 VP |
11193 | case TARGET_OBJECT_OSDATA: |
11194 | /* Should only get here if we're connected. */ | |
5d93a237 | 11195 | gdb_assert (rs->remote_desc); |
07e059b5 | 11196 | return remote_read_qxfer |
f6ac5f3d | 11197 | ("osdata", annex, readbuf, offset, len, xfered_len, |
dda83cd7 | 11198 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
07e059b5 | 11199 | |
dc146f7c VP |
11200 | case TARGET_OBJECT_THREADS: |
11201 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11202 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 11203 | xfered_len, |
dc146f7c VP |
11204 | &remote_protocol_packets[PACKET_qXfer_threads]); |
11205 | ||
b3b9301e PA |
11206 | case TARGET_OBJECT_TRACEFRAME_INFO: |
11207 | gdb_assert (annex == NULL); | |
11208 | return remote_read_qxfer | |
f6ac5f3d | 11209 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 11210 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
11211 | |
11212 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 11213 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 11214 | xfered_len, |
78d85199 | 11215 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
11216 | |
11217 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 11218 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 11219 | xfered_len, |
169081d0 TG |
11220 | &remote_protocol_packets[PACKET_qXfer_uib]); |
11221 | ||
9accd112 | 11222 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 11223 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 11224 | xfered_len, |
dda83cd7 | 11225 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9accd112 | 11226 | |
f4abbc16 | 11227 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 11228 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
11229 | len, xfered_len, |
11230 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
11231 | ||
c78fa86a | 11232 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 11233 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
11234 | len, xfered_len, |
11235 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
11236 | ||
1e3ff5ad | 11237 | default: |
2ed4b548 | 11238 | return TARGET_XFER_E_IO; |
c906108c SS |
11239 | } |
11240 | ||
0df8b418 | 11241 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 11242 | large enough let the caller deal with it. */ |
ea9c271d | 11243 | if (len < get_remote_packet_size ()) |
2ed4b548 | 11244 | return TARGET_XFER_E_IO; |
ea9c271d | 11245 | len = get_remote_packet_size (); |
1e3ff5ad | 11246 | |
23860348 | 11247 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 11248 | if (!rs->remote_desc) |
8a3fe4f8 | 11249 | error (_("remote query is only available after target open")); |
c906108c | 11250 | |
1e3ff5ad | 11251 | gdb_assert (annex != NULL); |
4b8a223f | 11252 | gdb_assert (readbuf != NULL); |
c906108c | 11253 | |
8d64371b | 11254 | p2 = rs->buf.data (); |
c906108c SS |
11255 | *p2++ = 'q'; |
11256 | *p2++ = query_type; | |
11257 | ||
23860348 MS |
11258 | /* We used one buffer char for the remote protocol q command and |
11259 | another for the query type. As the remote protocol encapsulation | |
11260 | uses 4 chars plus one extra in case we are debugging | |
11261 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
11262 | string. */ | |
c906108c | 11263 | i = 0; |
ea9c271d | 11264 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11265 | { |
1e3ff5ad AC |
11266 | /* Bad caller may have sent forbidden characters. */ |
11267 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11268 | *p2++ = annex[i]; | |
c906108c SS |
11269 | i++; |
11270 | } | |
1e3ff5ad AC |
11271 | *p2 = '\0'; |
11272 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11273 | |
6d820c5c | 11274 | i = putpkt (rs->buf); |
c5aa993b | 11275 | if (i < 0) |
2ed4b548 | 11276 | return TARGET_XFER_E_IO; |
c906108c | 11277 | |
8d64371b TT |
11278 | getpkt (&rs->buf, 0); |
11279 | strcpy ((char *) readbuf, rs->buf.data ()); | |
c906108c | 11280 | |
9b409511 | 11281 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11282 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11283 | } |
11284 | ||
09c98b44 DB |
11285 | /* Implementation of to_get_memory_xfer_limit. */ |
11286 | ||
f6ac5f3d PA |
11287 | ULONGEST |
11288 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11289 | { |
11290 | return get_memory_write_packet_size (); | |
11291 | } | |
11292 | ||
f6ac5f3d PA |
11293 | int |
11294 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11295 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11296 | CORE_ADDR *found_addrp) | |
08388c79 | 11297 | { |
f5656ead | 11298 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
11299 | struct remote_state *rs = get_remote_state (); |
11300 | int max_size = get_memory_write_packet_size (); | |
11301 | struct packet_config *packet = | |
11302 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
11303 | /* Number of packet bytes used to encode the pattern; |
11304 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11305 | int escaped_pattern_len; |
0df8b418 | 11306 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11307 | int used_pattern_len; |
11308 | int i; | |
11309 | int found; | |
11310 | ULONGEST found_addr; | |
11311 | ||
4a72de73 TT |
11312 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
11313 | { | |
11314 | return (target_read (this, TARGET_OBJECT_MEMORY, NULL, result, addr, len) | |
11315 | == len); | |
11316 | }; | |
11317 | ||
7cc244de PA |
11318 | /* Don't go to the target if we don't have to. This is done before |
11319 | checking packet_config_support to avoid the possibility that a | |
11320 | success for this edge case means the facility works in | |
11321 | general. */ | |
08388c79 DE |
11322 | if (pattern_len > search_space_len) |
11323 | return 0; | |
11324 | if (pattern_len == 0) | |
11325 | { | |
11326 | *found_addrp = start_addr; | |
11327 | return 1; | |
11328 | } | |
11329 | ||
11330 | /* If we already know the packet isn't supported, fall back to the simple | |
11331 | way of searching memory. */ | |
11332 | ||
4082afcc | 11333 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
11334 | { |
11335 | /* Target doesn't provided special support, fall back and use the | |
11336 | standard support (copy memory and do the search here). */ | |
4a72de73 | 11337 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11338 | pattern, pattern_len, found_addrp); |
11339 | } | |
11340 | ||
28439a30 PA |
11341 | /* Make sure the remote is pointing at the right process. */ |
11342 | set_general_process (); | |
11343 | ||
08388c79 | 11344 | /* Insert header. */ |
8d64371b | 11345 | i = snprintf (rs->buf.data (), max_size, |
08388c79 | 11346 | "qSearch:memory:%s;%s;", |
5af949e3 | 11347 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11348 | phex_nz (search_space_len, sizeof (search_space_len))); |
11349 | max_size -= (i + 1); | |
11350 | ||
11351 | /* Escape as much data as fits into rs->buf. */ | |
11352 | escaped_pattern_len = | |
8d64371b TT |
11353 | remote_escape_output (pattern, pattern_len, 1, |
11354 | (gdb_byte *) rs->buf.data () + i, | |
08388c79 DE |
11355 | &used_pattern_len, max_size); |
11356 | ||
11357 | /* Bail if the pattern is too large. */ | |
11358 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11359 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 | 11360 | |
8d64371b TT |
11361 | if (putpkt_binary (rs->buf.data (), i + escaped_pattern_len) < 0 |
11362 | || getpkt_sane (&rs->buf, 0) < 0 | |
08388c79 DE |
11363 | || packet_ok (rs->buf, packet) != PACKET_OK) |
11364 | { | |
11365 | /* The request may not have worked because the command is not | |
11366 | supported. If so, fall back to the simple way. */ | |
7cc244de | 11367 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 11368 | { |
4a72de73 | 11369 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11370 | pattern, pattern_len, found_addrp); |
11371 | } | |
11372 | return -1; | |
11373 | } | |
11374 | ||
11375 | if (rs->buf[0] == '0') | |
11376 | found = 0; | |
11377 | else if (rs->buf[0] == '1') | |
11378 | { | |
11379 | found = 1; | |
11380 | if (rs->buf[1] != ',') | |
8d64371b TT |
11381 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
11382 | unpack_varlen_hex (&rs->buf[2], &found_addr); | |
08388c79 DE |
11383 | *found_addrp = found_addr; |
11384 | } | |
11385 | else | |
8d64371b | 11386 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
08388c79 DE |
11387 | |
11388 | return found; | |
11389 | } | |
11390 | ||
f6ac5f3d PA |
11391 | void |
11392 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11393 | { |
d01949b6 | 11394 | struct remote_state *rs = get_remote_state (); |
8d64371b | 11395 | char *p = rs->buf.data (); |
96baa820 | 11396 | |
5d93a237 | 11397 | if (!rs->remote_desc) |
8a3fe4f8 | 11398 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11399 | |
23860348 | 11400 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11401 | if (command == NULL) |
11402 | command = ""; | |
11403 | ||
23860348 | 11404 | /* The query prefix. */ |
8d64371b TT |
11405 | strcpy (rs->buf.data (), "qRcmd,"); |
11406 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 | 11407 | |
8d64371b | 11408 | if ((strlen (rs->buf.data ()) + strlen (command) * 2 + 8/*misc*/) |
3e43a32a | 11409 | > get_remote_packet_size ()) |
8a3fe4f8 | 11410 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11411 | |
23860348 | 11412 | /* Encode the actual command. */ |
a30bf1f1 | 11413 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11414 | |
6d820c5c | 11415 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11416 | error (_("Communication problem with target.")); |
96baa820 JM |
11417 | |
11418 | /* get/display the response */ | |
11419 | while (1) | |
11420 | { | |
2e9f7625 DJ |
11421 | char *buf; |
11422 | ||
00bf0b85 | 11423 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11424 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11425 | rs->buf[0] = '\0'; |
8d64371b | 11426 | if (getpkt_sane (&rs->buf, 0) == -1) |
dda83cd7 SM |
11427 | { |
11428 | /* Timeout. Continue to (try to) read responses. | |
11429 | This is better than stopping with an error, assuming the stub | |
11430 | is still executing the (long) monitor command. | |
11431 | If needed, the user can interrupt gdb using C-c, obtaining | |
11432 | an effect similar to stop on timeout. */ | |
11433 | continue; | |
11434 | } | |
8d64371b | 11435 | buf = rs->buf.data (); |
96baa820 | 11436 | if (buf[0] == '\0') |
8a3fe4f8 | 11437 | error (_("Target does not support this command.")); |
96baa820 JM |
11438 | if (buf[0] == 'O' && buf[1] != 'K') |
11439 | { | |
23860348 | 11440 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11441 | continue; |
11442 | } | |
11443 | if (strcmp (buf, "OK") == 0) | |
11444 | break; | |
7be570e7 JM |
11445 | if (strlen (buf) == 3 && buf[0] == 'E' |
11446 | && isdigit (buf[1]) && isdigit (buf[2])) | |
11447 | { | |
8a3fe4f8 | 11448 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11449 | } |
96baa820 JM |
11450 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11451 | { | |
11452 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11453 | |
96baa820 JM |
11454 | fputc_unfiltered (c, outbuf); |
11455 | } | |
11456 | break; | |
11457 | } | |
11458 | } | |
11459 | ||
f6ac5f3d PA |
11460 | std::vector<mem_region> |
11461 | remote_target::memory_map () | |
fd79ecee | 11462 | { |
a664f67e | 11463 | std::vector<mem_region> result; |
9018be22 | 11464 | gdb::optional<gdb::char_vector> text |
8b88a78e | 11465 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_MEMORY_MAP, NULL); |
fd79ecee DJ |
11466 | |
11467 | if (text) | |
9018be22 | 11468 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11469 | |
11470 | return result; | |
11471 | } | |
11472 | ||
c906108c | 11473 | static void |
ac88e2de | 11474 | packet_command (const char *args, int from_tty) |
c906108c | 11475 | { |
6b8edb51 | 11476 | remote_target *remote = get_current_remote_target (); |
c906108c | 11477 | |
6b8edb51 | 11478 | if (remote == nullptr) |
8a3fe4f8 | 11479 | error (_("command can only be used with remote target")); |
c906108c | 11480 | |
6b8edb51 PA |
11481 | remote->packet_command (args, from_tty); |
11482 | } | |
11483 | ||
11484 | void | |
11485 | remote_target::packet_command (const char *args, int from_tty) | |
11486 | { | |
c5aa993b | 11487 | if (!args) |
8a3fe4f8 | 11488 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
11489 | |
11490 | puts_filtered ("sending: "); | |
11491 | print_packet (args); | |
11492 | puts_filtered ("\n"); | |
11493 | putpkt (args); | |
11494 | ||
6b8edb51 PA |
11495 | remote_state *rs = get_remote_state (); |
11496 | ||
8d64371b | 11497 | getpkt (&rs->buf, 0); |
c906108c | 11498 | puts_filtered ("received: "); |
8d64371b | 11499 | print_packet (rs->buf.data ()); |
c906108c SS |
11500 | puts_filtered ("\n"); |
11501 | } | |
11502 | ||
11503 | #if 0 | |
23860348 | 11504 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11505 | |
a14ed312 | 11506 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11507 | |
a14ed312 | 11508 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11509 | |
a14ed312 | 11510 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11511 | |
a14ed312 | 11512 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11513 | |
23860348 | 11514 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11515 | |
a14ed312 | 11516 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11517 | |
23860348 | 11518 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11519 | |
a14ed312 | 11520 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11521 | |
a14ed312 | 11522 | static void init_remote_threadtests (void); |
c906108c | 11523 | |
23860348 | 11524 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11525 | |
11526 | static void | |
0b39b52e | 11527 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11528 | { |
11529 | int sample_thread = SAMPLE_THREAD; | |
11530 | ||
a3f17187 | 11531 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 11532 | set_general_thread (sample_thread); |
c906108c SS |
11533 | } |
11534 | ||
11535 | ||
11536 | static void | |
0b39b52e | 11537 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11538 | { |
11539 | int sample_thread = SAMPLE_THREAD; | |
e99b03dc | 11540 | int pid = inferior_ptid.pid (); |
fd79271b | 11541 | ptid_t ptid = ptid_t (pid, sample_thread, 0); |
c906108c | 11542 | |
79d7f229 | 11543 | if (remote_thread_alive (ptid)) |
c906108c SS |
11544 | printf_filtered ("PASS: Thread alive test\n"); |
11545 | else | |
11546 | printf_filtered ("FAIL: Thread alive test\n"); | |
11547 | } | |
11548 | ||
23860348 | 11549 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11550 | |
11551 | void | |
fba45db2 | 11552 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11553 | { |
11554 | char hexid[20]; | |
11555 | ||
405feb71 | 11556 | pack_threadid (&hexid[0], ref); /* Convert thread id into hex. */ |
c906108c SS |
11557 | hexid[16] = 0; |
11558 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
11559 | } | |
11560 | ||
11561 | static void | |
0b39b52e | 11562 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11563 | { |
11564 | int startflag = 1; | |
11565 | threadref nextthread; | |
11566 | int done, result_count; | |
11567 | threadref threadlist[3]; | |
11568 | ||
11569 | printf_filtered ("Remote Threadlist test\n"); | |
11570 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
11571 | &result_count, &threadlist[0])) | |
11572 | printf_filtered ("FAIL: threadlist test\n"); | |
11573 | else | |
11574 | { | |
11575 | threadref *scan = threadlist; | |
11576 | threadref *limit = scan + result_count; | |
11577 | ||
11578 | while (scan < limit) | |
11579 | output_threadid (" thread ", scan++); | |
11580 | } | |
11581 | } | |
11582 | ||
11583 | void | |
fba45db2 | 11584 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11585 | { |
11586 | output_threadid ("Threadid: ", &info->threadid); | |
11587 | printf_filtered ("Name: %s\n ", info->shortname); | |
11588 | printf_filtered ("State: %s\n", info->display); | |
11589 | printf_filtered ("other: %s\n\n", info->more_display); | |
11590 | } | |
11591 | ||
11592 | int | |
fba45db2 | 11593 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11594 | { |
11595 | int result; | |
11596 | int set; | |
11597 | struct gdb_ext_thread_info threadinfo; | |
11598 | ||
11599 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11600 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11601 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11602 | display_thread_info (&threadinfo); | |
11603 | return result; | |
11604 | } | |
11605 | ||
11606 | static void | |
0b39b52e | 11607 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11608 | { |
11609 | int athread = SAMPLE_THREAD; | |
11610 | threadref thread; | |
11611 | int set; | |
11612 | ||
11613 | int_to_threadref (&thread, athread); | |
11614 | printf_filtered ("Remote Threadinfo test\n"); | |
11615 | if (!get_and_display_threadinfo (&thread)) | |
11616 | printf_filtered ("FAIL cannot get thread info\n"); | |
11617 | } | |
11618 | ||
11619 | static int | |
fba45db2 | 11620 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11621 | { |
11622 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11623 | return get_and_display_threadinfo (ref); | |
11624 | } | |
11625 | ||
11626 | static void | |
0b39b52e | 11627 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
11628 | { |
11629 | printf_filtered ("Remote Threadlist update test\n"); | |
11630 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11631 | } | |
11632 | ||
11633 | static void | |
11634 | init_remote_threadtests (void) | |
11635 | { | |
3e43a32a MS |
11636 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11637 | _("Fetch and print the remote list of " | |
590042fc | 11638 | "thread identifiers, one pkt only.")); |
c906108c | 11639 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
590042fc | 11640 | _("Fetch and display info about one thread.")); |
c906108c | 11641 | add_com ("tset", class_obscure, threadset_test_cmd, |
590042fc | 11642 | _("Test setting to a different thread.")); |
c906108c | 11643 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
590042fc | 11644 | _("Iterate through updating all remote thread info.")); |
c906108c | 11645 | add_com ("talive", class_obscure, threadalive_test, |
590042fc | 11646 | _("Remote thread alive test.")); |
c906108c SS |
11647 | } |
11648 | ||
11649 | #endif /* 0 */ | |
11650 | ||
a068643d | 11651 | /* Convert a thread ID to a string. */ |
f3fb8c85 | 11652 | |
a068643d | 11653 | std::string |
f6ac5f3d | 11654 | remote_target::pid_to_str (ptid_t ptid) |
f3fb8c85 | 11655 | { |
82f73884 | 11656 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11657 | |
d7e15655 | 11658 | if (ptid == null_ptid) |
7cee1e54 | 11659 | return normal_pid_to_str (ptid); |
0e998d96 | 11660 | else if (ptid.is_pid ()) |
ecd0ada5 PA |
11661 | { |
11662 | /* Printing an inferior target id. */ | |
11663 | ||
11664 | /* When multi-process extensions are off, there's no way in the | |
11665 | remote protocol to know the remote process id, if there's any | |
11666 | at all. There's one exception --- when we're connected with | |
11667 | target extended-remote, and we manually attached to a process | |
11668 | with "attach PID". We don't record anywhere a flag that | |
11669 | allows us to distinguish that case from the case of | |
11670 | connecting with extended-remote and the stub already being | |
11671 | attached to a process, and reporting yes to qAttached, hence | |
11672 | no smart special casing here. */ | |
11673 | if (!remote_multi_process_p (rs)) | |
a068643d | 11674 | return "Remote target"; |
ecd0ada5 PA |
11675 | |
11676 | return normal_pid_to_str (ptid); | |
82f73884 | 11677 | } |
ecd0ada5 | 11678 | else |
79d7f229 | 11679 | { |
d7e15655 | 11680 | if (magic_null_ptid == ptid) |
a068643d | 11681 | return "Thread <main>"; |
8020350c | 11682 | else if (remote_multi_process_p (rs)) |
e38504b3 | 11683 | if (ptid.lwp () == 0) |
de0d863e DB |
11684 | return normal_pid_to_str (ptid); |
11685 | else | |
a068643d TT |
11686 | return string_printf ("Thread %d.%ld", |
11687 | ptid.pid (), ptid.lwp ()); | |
ecd0ada5 | 11688 | else |
a068643d | 11689 | return string_printf ("Thread %ld", ptid.lwp ()); |
79d7f229 | 11690 | } |
f3fb8c85 MS |
11691 | } |
11692 | ||
38691318 KB |
11693 | /* Get the address of the thread local variable in OBJFILE which is |
11694 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11695 | ||
f6ac5f3d PA |
11696 | CORE_ADDR |
11697 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11698 | CORE_ADDR offset) | |
38691318 | 11699 | { |
4082afcc | 11700 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11701 | { |
11702 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11703 | char *p = rs->buf.data (); |
11704 | char *endp = p + get_remote_packet_size (); | |
571dd617 | 11705 | enum packet_result result; |
38691318 KB |
11706 | |
11707 | strcpy (p, "qGetTLSAddr:"); | |
11708 | p += strlen (p); | |
82f73884 | 11709 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11710 | *p++ = ','; |
11711 | p += hexnumstr (p, offset); | |
11712 | *p++ = ','; | |
11713 | p += hexnumstr (p, lm); | |
11714 | *p++ = '\0'; | |
11715 | ||
6d820c5c | 11716 | putpkt (rs->buf); |
8d64371b | 11717 | getpkt (&rs->buf, 0); |
3e43a32a MS |
11718 | result = packet_ok (rs->buf, |
11719 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11720 | if (result == PACKET_OK) |
38691318 | 11721 | { |
b926417a | 11722 | ULONGEST addr; |
38691318 | 11723 | |
8d64371b | 11724 | unpack_varlen_hex (rs->buf.data (), &addr); |
b926417a | 11725 | return addr; |
38691318 | 11726 | } |
571dd617 | 11727 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11728 | throw_error (TLS_GENERIC_ERROR, |
11729 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11730 | else |
109c3e39 AC |
11731 | throw_error (TLS_GENERIC_ERROR, |
11732 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11733 | } |
11734 | else | |
109c3e39 AC |
11735 | throw_error (TLS_GENERIC_ERROR, |
11736 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11737 | /* Not reached. */ |
11738 | return 0; | |
11739 | } | |
11740 | ||
711e434b PM |
11741 | /* Provide thread local base, i.e. Thread Information Block address. |
11742 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11743 | ||
57810aa7 | 11744 | bool |
f6ac5f3d | 11745 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11746 | { |
4082afcc | 11747 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11748 | { |
11749 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11750 | char *p = rs->buf.data (); |
11751 | char *endp = p + get_remote_packet_size (); | |
711e434b PM |
11752 | enum packet_result result; |
11753 | ||
11754 | strcpy (p, "qGetTIBAddr:"); | |
11755 | p += strlen (p); | |
11756 | p = write_ptid (p, endp, ptid); | |
11757 | *p++ = '\0'; | |
11758 | ||
11759 | putpkt (rs->buf); | |
8d64371b | 11760 | getpkt (&rs->buf, 0); |
711e434b PM |
11761 | result = packet_ok (rs->buf, |
11762 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11763 | if (result == PACKET_OK) | |
11764 | { | |
b926417a | 11765 | ULONGEST val; |
8d64371b | 11766 | unpack_varlen_hex (rs->buf.data (), &val); |
711e434b | 11767 | if (addr) |
b926417a | 11768 | *addr = (CORE_ADDR) val; |
57810aa7 | 11769 | return true; |
711e434b PM |
11770 | } |
11771 | else if (result == PACKET_UNKNOWN) | |
11772 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11773 | else | |
11774 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11775 | } | |
11776 | else | |
11777 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11778 | /* Not reached. */ | |
57810aa7 | 11779 | return false; |
711e434b PM |
11780 | } |
11781 | ||
29709017 DJ |
11782 | /* Support for inferring a target description based on the current |
11783 | architecture and the size of a 'g' packet. While the 'g' packet | |
11784 | can have any size (since optional registers can be left off the | |
11785 | end), some sizes are easily recognizable given knowledge of the | |
11786 | approximate architecture. */ | |
11787 | ||
11788 | struct remote_g_packet_guess | |
11789 | { | |
eefce37f TT |
11790 | remote_g_packet_guess (int bytes_, const struct target_desc *tdesc_) |
11791 | : bytes (bytes_), | |
11792 | tdesc (tdesc_) | |
11793 | { | |
11794 | } | |
11795 | ||
29709017 DJ |
11796 | int bytes; |
11797 | const struct target_desc *tdesc; | |
11798 | }; | |
29709017 | 11799 | |
eefce37f | 11800 | struct remote_g_packet_data : public allocate_on_obstack |
29709017 | 11801 | { |
eefce37f | 11802 | std::vector<remote_g_packet_guess> guesses; |
29709017 DJ |
11803 | }; |
11804 | ||
11805 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11806 | ||
11807 | static void * | |
11808 | remote_g_packet_data_init (struct obstack *obstack) | |
11809 | { | |
eefce37f | 11810 | return new (obstack) remote_g_packet_data; |
29709017 DJ |
11811 | } |
11812 | ||
11813 | void | |
11814 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11815 | const struct target_desc *tdesc) | |
11816 | { | |
11817 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11818 | = ((struct remote_g_packet_data *) |
11819 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11820 | |
11821 | gdb_assert (tdesc != NULL); | |
11822 | ||
eefce37f TT |
11823 | for (const remote_g_packet_guess &guess : data->guesses) |
11824 | if (guess.bytes == bytes) | |
29709017 | 11825 | internal_error (__FILE__, __LINE__, |
9b20d036 | 11826 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11827 | bytes); |
11828 | ||
eefce37f | 11829 | data->guesses.emplace_back (bytes, tdesc); |
29709017 DJ |
11830 | } |
11831 | ||
eefce37f TT |
11832 | /* Return true if remote_read_description would do anything on this target |
11833 | and architecture, false otherwise. */ | |
d962ef82 | 11834 | |
eefce37f | 11835 | static bool |
d962ef82 DJ |
11836 | remote_read_description_p (struct target_ops *target) |
11837 | { | |
11838 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11839 | = ((struct remote_g_packet_data *) |
11840 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 | 11841 | |
eefce37f | 11842 | return !data->guesses.empty (); |
d962ef82 DJ |
11843 | } |
11844 | ||
f6ac5f3d PA |
11845 | const struct target_desc * |
11846 | remote_target::read_description () | |
29709017 DJ |
11847 | { |
11848 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11849 | = ((struct remote_g_packet_data *) |
11850 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11851 | |
d962ef82 DJ |
11852 | /* Do not try this during initial connection, when we do not know |
11853 | whether there is a running but stopped thread. */ | |
55f6301a | 11854 | if (!target_has_execution () || inferior_ptid == null_ptid) |
b6a8c27b | 11855 | return beneath ()->read_description (); |
d962ef82 | 11856 | |
eefce37f | 11857 | if (!data->guesses.empty ()) |
29709017 | 11858 | { |
29709017 DJ |
11859 | int bytes = send_g_packet (); |
11860 | ||
eefce37f TT |
11861 | for (const remote_g_packet_guess &guess : data->guesses) |
11862 | if (guess.bytes == bytes) | |
11863 | return guess.tdesc; | |
29709017 DJ |
11864 | |
11865 | /* We discard the g packet. A minor optimization would be to | |
11866 | hold on to it, and fill the register cache once we have selected | |
11867 | an architecture, but it's too tricky to do safely. */ | |
11868 | } | |
11869 | ||
b6a8c27b | 11870 | return beneath ()->read_description (); |
29709017 DJ |
11871 | } |
11872 | ||
a6b151f1 DJ |
11873 | /* Remote file transfer support. This is host-initiated I/O, not |
11874 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11875 | ||
11876 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11877 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11878 | decrease *LEFT. Otherwise raise an error. */ | |
11879 | ||
11880 | static void | |
a121b7c1 | 11881 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11882 | { |
11883 | int len = strlen (string); | |
11884 | ||
11885 | if (len > *left) | |
11886 | error (_("Packet too long for target.")); | |
11887 | ||
11888 | memcpy (*buffer, string, len); | |
11889 | *buffer += len; | |
11890 | *left -= len; | |
11891 | ||
11892 | /* NUL-terminate the buffer as a convenience, if there is | |
11893 | room. */ | |
11894 | if (*left) | |
11895 | **buffer = '\0'; | |
11896 | } | |
11897 | ||
11898 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11899 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11900 | decrease *LEFT. Otherwise raise an error. */ | |
11901 | ||
11902 | static void | |
11903 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11904 | int len) | |
11905 | { | |
11906 | if (2 * len > *left) | |
11907 | error (_("Packet too long for target.")); | |
11908 | ||
11909 | bin2hex (bytes, *buffer, len); | |
11910 | *buffer += 2 * len; | |
11911 | *left -= 2 * len; | |
11912 | ||
11913 | /* NUL-terminate the buffer as a convenience, if there is | |
11914 | room. */ | |
11915 | if (*left) | |
11916 | **buffer = '\0'; | |
11917 | } | |
11918 | ||
11919 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11920 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11921 | decrease *LEFT. Otherwise raise an error. */ | |
11922 | ||
11923 | static void | |
11924 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11925 | { | |
11926 | int len = hexnumlen (value); | |
11927 | ||
11928 | if (len > *left) | |
11929 | error (_("Packet too long for target.")); | |
11930 | ||
11931 | hexnumstr (*buffer, value); | |
11932 | *buffer += len; | |
11933 | *left -= len; | |
11934 | ||
11935 | /* NUL-terminate the buffer as a convenience, if there is | |
11936 | room. */ | |
11937 | if (*left) | |
11938 | **buffer = '\0'; | |
11939 | } | |
11940 | ||
11941 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11942 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11943 | was included, and *ATTACHMENT to point to the start of the annex | |
11944 | if any. The length of the packet isn't needed here; there may | |
11945 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11946 | ||
11947 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11948 | -1 is returned, the other variables may not be initialized. */ | |
11949 | ||
11950 | static int | |
aa2838cc SM |
11951 | remote_hostio_parse_result (const char *buffer, int *retcode, |
11952 | int *remote_errno, const char **attachment) | |
a6b151f1 DJ |
11953 | { |
11954 | char *p, *p2; | |
11955 | ||
11956 | *remote_errno = 0; | |
11957 | *attachment = NULL; | |
11958 | ||
11959 | if (buffer[0] != 'F') | |
11960 | return -1; | |
11961 | ||
11962 | errno = 0; | |
11963 | *retcode = strtol (&buffer[1], &p, 16); | |
11964 | if (errno != 0 || p == &buffer[1]) | |
11965 | return -1; | |
11966 | ||
11967 | /* Check for ",errno". */ | |
11968 | if (*p == ',') | |
11969 | { | |
11970 | errno = 0; | |
11971 | *remote_errno = strtol (p + 1, &p2, 16); | |
11972 | if (errno != 0 || p + 1 == p2) | |
11973 | return -1; | |
11974 | p = p2; | |
11975 | } | |
11976 | ||
11977 | /* Check for ";attachment". If there is no attachment, the | |
11978 | packet should end here. */ | |
11979 | if (*p == ';') | |
11980 | { | |
11981 | *attachment = p + 1; | |
11982 | return 0; | |
11983 | } | |
11984 | else if (*p == '\0') | |
11985 | return 0; | |
11986 | else | |
11987 | return -1; | |
11988 | } | |
11989 | ||
11990 | /* Send a prepared I/O packet to the target and read its response. | |
11991 | The prepared packet is in the global RS->BUF before this function | |
11992 | is called, and the answer is there when we return. | |
11993 | ||
11994 | COMMAND_BYTES is the length of the request to send, which may include | |
11995 | binary data. WHICH_PACKET is the packet configuration to check | |
11996 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11997 | is set to the error number and -1 is returned. Otherwise the value | |
11998 | returned by the function is returned. | |
11999 | ||
12000 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
12001 | attachment is expected; an error will be reported if there's a | |
12002 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
12003 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
12004 | attachment's length. */ | |
12005 | ||
6b8edb51 PA |
12006 | int |
12007 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
aa2838cc | 12008 | int *remote_errno, const char **attachment, |
6b8edb51 | 12009 | int *attachment_len) |
a6b151f1 DJ |
12010 | { |
12011 | struct remote_state *rs = get_remote_state (); | |
12012 | int ret, bytes_read; | |
aa2838cc | 12013 | const char *attachment_tmp; |
a6b151f1 | 12014 | |
20db9c52 | 12015 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
12016 | { |
12017 | *remote_errno = FILEIO_ENOSYS; | |
12018 | return -1; | |
12019 | } | |
12020 | ||
8d64371b TT |
12021 | putpkt_binary (rs->buf.data (), command_bytes); |
12022 | bytes_read = getpkt_sane (&rs->buf, 0); | |
a6b151f1 DJ |
12023 | |
12024 | /* If it timed out, something is wrong. Don't try to parse the | |
12025 | buffer. */ | |
12026 | if (bytes_read < 0) | |
12027 | { | |
12028 | *remote_errno = FILEIO_EINVAL; | |
12029 | return -1; | |
12030 | } | |
12031 | ||
12032 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
12033 | { | |
12034 | case PACKET_ERROR: | |
12035 | *remote_errno = FILEIO_EINVAL; | |
12036 | return -1; | |
12037 | case PACKET_UNKNOWN: | |
12038 | *remote_errno = FILEIO_ENOSYS; | |
12039 | return -1; | |
12040 | case PACKET_OK: | |
12041 | break; | |
12042 | } | |
12043 | ||
8d64371b | 12044 | if (remote_hostio_parse_result (rs->buf.data (), &ret, remote_errno, |
a6b151f1 DJ |
12045 | &attachment_tmp)) |
12046 | { | |
12047 | *remote_errno = FILEIO_EINVAL; | |
12048 | return -1; | |
12049 | } | |
12050 | ||
12051 | /* Make sure we saw an attachment if and only if we expected one. */ | |
12052 | if ((attachment_tmp == NULL && attachment != NULL) | |
12053 | || (attachment_tmp != NULL && attachment == NULL)) | |
12054 | { | |
12055 | *remote_errno = FILEIO_EINVAL; | |
12056 | return -1; | |
12057 | } | |
12058 | ||
12059 | /* If an attachment was found, it must point into the packet buffer; | |
12060 | work out how many bytes there were. */ | |
12061 | if (attachment_tmp != NULL) | |
12062 | { | |
12063 | *attachment = attachment_tmp; | |
8d64371b | 12064 | *attachment_len = bytes_read - (*attachment - rs->buf.data ()); |
a6b151f1 DJ |
12065 | } |
12066 | ||
12067 | return ret; | |
12068 | } | |
12069 | ||
dd194f6b | 12070 | /* See declaration.h. */ |
80152258 | 12071 | |
dd194f6b PA |
12072 | void |
12073 | readahead_cache::invalidate () | |
80152258 | 12074 | { |
dd194f6b | 12075 | this->fd = -1; |
80152258 PA |
12076 | } |
12077 | ||
dd194f6b | 12078 | /* See declaration.h. */ |
80152258 | 12079 | |
dd194f6b PA |
12080 | void |
12081 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 12082 | { |
dd194f6b PA |
12083 | if (this->fd == fd) |
12084 | this->fd = -1; | |
80152258 PA |
12085 | } |
12086 | ||
15a201c8 GB |
12087 | /* Set the filesystem remote_hostio functions that take FILENAME |
12088 | arguments will use. Return 0 on success, or -1 if an error | |
12089 | occurs (and set *REMOTE_ERRNO). */ | |
12090 | ||
6b8edb51 PA |
12091 | int |
12092 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
12093 | int *remote_errno) | |
15a201c8 GB |
12094 | { |
12095 | struct remote_state *rs = get_remote_state (); | |
12096 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
8d64371b | 12097 | char *p = rs->buf.data (); |
15a201c8 GB |
12098 | int left = get_remote_packet_size () - 1; |
12099 | char arg[9]; | |
12100 | int ret; | |
12101 | ||
12102 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
12103 | return 0; | |
12104 | ||
12105 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
12106 | return 0; | |
12107 | ||
12108 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
12109 | ||
12110 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
12111 | remote_buffer_add_string (&p, &left, arg); | |
12112 | ||
8d64371b | 12113 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_setfs, |
15a201c8 GB |
12114 | remote_errno, NULL, NULL); |
12115 | ||
12116 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
12117 | return 0; | |
12118 | ||
12119 | if (ret == 0) | |
12120 | rs->fs_pid = required_pid; | |
12121 | ||
12122 | return ret; | |
12123 | } | |
12124 | ||
12e2a5fd | 12125 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 12126 | |
6b8edb51 PA |
12127 | int |
12128 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
12129 | int flags, int mode, int warn_if_slow, | |
12130 | int *remote_errno) | |
a6b151f1 DJ |
12131 | { |
12132 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12133 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12134 | int left = get_remote_packet_size () - 1; |
12135 | ||
4313b8c0 GB |
12136 | if (warn_if_slow) |
12137 | { | |
12138 | static int warning_issued = 0; | |
12139 | ||
12140 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
12141 | filename); | |
12142 | ||
12143 | if (!warning_issued) | |
12144 | { | |
12145 | warning (_("File transfers from remote targets can be slow." | |
12146 | " Use \"set sysroot\" to access files locally" | |
12147 | " instead.")); | |
12148 | warning_issued = 1; | |
12149 | } | |
12150 | } | |
12151 | ||
15a201c8 GB |
12152 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12153 | return -1; | |
12154 | ||
a6b151f1 DJ |
12155 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
12156 | ||
12157 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12158 | strlen (filename)); | |
12159 | remote_buffer_add_string (&p, &left, ","); | |
12160 | ||
12161 | remote_buffer_add_int (&p, &left, flags); | |
12162 | remote_buffer_add_string (&p, &left, ","); | |
12163 | ||
12164 | remote_buffer_add_int (&p, &left, mode); | |
12165 | ||
8d64371b | 12166 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_open, |
a6b151f1 DJ |
12167 | remote_errno, NULL, NULL); |
12168 | } | |
12169 | ||
f6ac5f3d PA |
12170 | int |
12171 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
12172 | int flags, int mode, int warn_if_slow, | |
12173 | int *remote_errno) | |
12174 | { | |
6b8edb51 | 12175 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
12176 | remote_errno); |
12177 | } | |
12178 | ||
12e2a5fd | 12179 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 12180 | |
6b8edb51 PA |
12181 | int |
12182 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12183 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12184 | { |
12185 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12186 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12187 | int left = get_remote_packet_size (); |
12188 | int out_len; | |
12189 | ||
dd194f6b | 12190 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12191 | |
a6b151f1 DJ |
12192 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
12193 | ||
12194 | remote_buffer_add_int (&p, &left, fd); | |
12195 | remote_buffer_add_string (&p, &left, ","); | |
12196 | ||
12197 | remote_buffer_add_int (&p, &left, offset); | |
12198 | remote_buffer_add_string (&p, &left, ","); | |
12199 | ||
124e13d9 | 12200 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
8d64371b TT |
12201 | (get_remote_packet_size () |
12202 | - (p - rs->buf.data ()))); | |
a6b151f1 | 12203 | |
8d64371b | 12204 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pwrite, |
a6b151f1 DJ |
12205 | remote_errno, NULL, NULL); |
12206 | } | |
12207 | ||
f6ac5f3d PA |
12208 | int |
12209 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12210 | ULONGEST offset, int *remote_errno) | |
12211 | { | |
6b8edb51 | 12212 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12213 | } |
12214 | ||
80152258 PA |
12215 | /* Helper for the implementation of to_fileio_pread. Read the file |
12216 | from the remote side with vFile:pread. */ | |
a6b151f1 | 12217 | |
6b8edb51 PA |
12218 | int |
12219 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
12220 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12221 | { |
12222 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12223 | char *p = rs->buf.data (); |
aa2838cc | 12224 | const char *attachment; |
a6b151f1 DJ |
12225 | int left = get_remote_packet_size (); |
12226 | int ret, attachment_len; | |
12227 | int read_len; | |
12228 | ||
12229 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
12230 | ||
12231 | remote_buffer_add_int (&p, &left, fd); | |
12232 | remote_buffer_add_string (&p, &left, ","); | |
12233 | ||
12234 | remote_buffer_add_int (&p, &left, len); | |
12235 | remote_buffer_add_string (&p, &left, ","); | |
12236 | ||
12237 | remote_buffer_add_int (&p, &left, offset); | |
12238 | ||
8d64371b | 12239 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pread, |
a6b151f1 DJ |
12240 | remote_errno, &attachment, |
12241 | &attachment_len); | |
12242 | ||
12243 | if (ret < 0) | |
12244 | return ret; | |
12245 | ||
bc20a4af | 12246 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
12247 | read_buf, len); |
12248 | if (read_len != ret) | |
12249 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
12250 | ||
12251 | return ret; | |
12252 | } | |
12253 | ||
dd194f6b | 12254 | /* See declaration.h. */ |
80152258 | 12255 | |
dd194f6b PA |
12256 | int |
12257 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
12258 | ULONGEST offset) | |
80152258 | 12259 | { |
dd194f6b PA |
12260 | if (this->fd == fd |
12261 | && this->offset <= offset | |
12262 | && offset < this->offset + this->bufsize) | |
80152258 | 12263 | { |
dd194f6b | 12264 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
12265 | |
12266 | if (offset + len > max) | |
12267 | len = max - offset; | |
12268 | ||
dd194f6b | 12269 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
12270 | return len; |
12271 | } | |
12272 | ||
12273 | return 0; | |
12274 | } | |
12275 | ||
12276 | /* Implementation of to_fileio_pread. */ | |
12277 | ||
6b8edb51 PA |
12278 | int |
12279 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
12280 | ULONGEST offset, int *remote_errno) | |
80152258 PA |
12281 | { |
12282 | int ret; | |
12283 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12284 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12285 | |
dd194f6b | 12286 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12287 | if (ret > 0) |
12288 | { | |
12289 | cache->hit_count++; | |
12290 | ||
2189c312 SM |
12291 | remote_debug_printf ("readahead cache hit %s", |
12292 | pulongest (cache->hit_count)); | |
80152258 PA |
12293 | return ret; |
12294 | } | |
12295 | ||
12296 | cache->miss_count++; | |
2189c312 SM |
12297 | |
12298 | remote_debug_printf ("readahead cache miss %s", | |
12299 | pulongest (cache->miss_count)); | |
80152258 PA |
12300 | |
12301 | cache->fd = fd; | |
12302 | cache->offset = offset; | |
12303 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 12304 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 | 12305 | |
6b8edb51 | 12306 | ret = remote_hostio_pread_vFile (cache->fd, cache->buf, cache->bufsize, |
80152258 PA |
12307 | cache->offset, remote_errno); |
12308 | if (ret <= 0) | |
12309 | { | |
dd194f6b | 12310 | cache->invalidate_fd (fd); |
80152258 PA |
12311 | return ret; |
12312 | } | |
12313 | ||
12314 | cache->bufsize = ret; | |
dd194f6b | 12315 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12316 | } |
12317 | ||
f6ac5f3d PA |
12318 | int |
12319 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
12320 | ULONGEST offset, int *remote_errno) | |
12321 | { | |
6b8edb51 | 12322 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12323 | } |
12324 | ||
12e2a5fd | 12325 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12326 | |
6b8edb51 PA |
12327 | int |
12328 | remote_target::remote_hostio_close (int fd, int *remote_errno) | |
a6b151f1 DJ |
12329 | { |
12330 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12331 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12332 | int left = get_remote_packet_size () - 1; |
12333 | ||
dd194f6b | 12334 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12335 | |
a6b151f1 DJ |
12336 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12337 | ||
12338 | remote_buffer_add_int (&p, &left, fd); | |
12339 | ||
8d64371b | 12340 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_close, |
a6b151f1 DJ |
12341 | remote_errno, NULL, NULL); |
12342 | } | |
12343 | ||
f6ac5f3d PA |
12344 | int |
12345 | remote_target::fileio_close (int fd, int *remote_errno) | |
12346 | { | |
6b8edb51 | 12347 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12348 | } |
12349 | ||
12e2a5fd | 12350 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12351 | |
6b8edb51 PA |
12352 | int |
12353 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
12354 | int *remote_errno) | |
a6b151f1 DJ |
12355 | { |
12356 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12357 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12358 | int left = get_remote_packet_size () - 1; |
12359 | ||
15a201c8 GB |
12360 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12361 | return -1; | |
12362 | ||
a6b151f1 DJ |
12363 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12364 | ||
12365 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12366 | strlen (filename)); | |
12367 | ||
8d64371b | 12368 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_unlink, |
a6b151f1 DJ |
12369 | remote_errno, NULL, NULL); |
12370 | } | |
12371 | ||
f6ac5f3d PA |
12372 | int |
12373 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
12374 | int *remote_errno) | |
12375 | { | |
6b8edb51 | 12376 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12377 | } |
12378 | ||
12e2a5fd | 12379 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12380 | |
f6ac5f3d PA |
12381 | gdb::optional<std::string> |
12382 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
12383 | int *remote_errno) | |
b9e7b9c3 UW |
12384 | { |
12385 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12386 | char *p = rs->buf.data (); |
aa2838cc | 12387 | const char *attachment; |
b9e7b9c3 UW |
12388 | int left = get_remote_packet_size (); |
12389 | int len, attachment_len; | |
12390 | int read_len; | |
b9e7b9c3 | 12391 | |
15a201c8 | 12392 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12393 | return {}; |
15a201c8 | 12394 | |
b9e7b9c3 UW |
12395 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12396 | ||
12397 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12398 | strlen (filename)); | |
12399 | ||
8d64371b | 12400 | len = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_readlink, |
b9e7b9c3 UW |
12401 | remote_errno, &attachment, |
12402 | &attachment_len); | |
12403 | ||
12404 | if (len < 0) | |
e0d3522b | 12405 | return {}; |
b9e7b9c3 | 12406 | |
e0d3522b | 12407 | std::string ret (len, '\0'); |
b9e7b9c3 | 12408 | |
bc20a4af | 12409 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12410 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12411 | if (read_len != len) |
12412 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12413 | ||
b9e7b9c3 UW |
12414 | return ret; |
12415 | } | |
12416 | ||
12e2a5fd | 12417 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12418 | |
f6ac5f3d PA |
12419 | int |
12420 | remote_target::fileio_fstat (int fd, struct stat *st, int *remote_errno) | |
0a93529c GB |
12421 | { |
12422 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12423 | char *p = rs->buf.data (); |
0a93529c GB |
12424 | int left = get_remote_packet_size (); |
12425 | int attachment_len, ret; | |
aa2838cc | 12426 | const char *attachment; |
0a93529c GB |
12427 | struct fio_stat fst; |
12428 | int read_len; | |
12429 | ||
464b0089 GB |
12430 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12431 | ||
12432 | remote_buffer_add_int (&p, &left, fd); | |
12433 | ||
8d64371b | 12434 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_fstat, |
464b0089 GB |
12435 | remote_errno, &attachment, |
12436 | &attachment_len); | |
12437 | if (ret < 0) | |
0a93529c | 12438 | { |
464b0089 GB |
12439 | if (*remote_errno != FILEIO_ENOSYS) |
12440 | return ret; | |
12441 | ||
0a93529c GB |
12442 | /* Strictly we should return -1, ENOSYS here, but when |
12443 | "set sysroot remote:" was implemented in August 2008 | |
12444 | BFD's need for a stat function was sidestepped with | |
12445 | this hack. This was not remedied until March 2015 | |
12446 | so we retain the previous behavior to avoid breaking | |
12447 | compatibility. | |
12448 | ||
12449 | Note that the memset is a March 2015 addition; older | |
12450 | GDBs set st_size *and nothing else* so the structure | |
12451 | would have garbage in all other fields. This might | |
12452 | break something but retaining the previous behavior | |
12453 | here would be just too wrong. */ | |
12454 | ||
12455 | memset (st, 0, sizeof (struct stat)); | |
12456 | st->st_size = INT_MAX; | |
12457 | return 0; | |
12458 | } | |
12459 | ||
0a93529c GB |
12460 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12461 | (gdb_byte *) &fst, sizeof (fst)); | |
12462 | ||
12463 | if (read_len != ret) | |
12464 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12465 | ||
12466 | if (read_len != sizeof (fst)) | |
12467 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12468 | read_len, (int) sizeof (fst)); | |
12469 | ||
12470 | remote_fileio_to_host_stat (&fst, st); | |
12471 | ||
12472 | return 0; | |
12473 | } | |
12474 | ||
12e2a5fd | 12475 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12476 | |
57810aa7 | 12477 | bool |
f6ac5f3d | 12478 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12479 | { |
12480 | /* Valgrind GDB presents itself as a remote target but works | |
12481 | on the local filesystem: it does not implement remote get | |
12482 | and users are not expected to set a sysroot. To handle | |
12483 | this case we treat the remote filesystem as local if the | |
12484 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12485 | does not support vFile:open. */ | |
a3be80c3 | 12486 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
12487 | { |
12488 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12489 | ||
12490 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12491 | { | |
12492 | int fd, remote_errno; | |
12493 | ||
12494 | /* Try opening a file to probe support. The supplied | |
12495 | filename is irrelevant, we only care about whether | |
12496 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12497 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12498 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12499 | &remote_errno); |
12500 | ||
12501 | if (fd >= 0) | |
6b8edb51 | 12502 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 GB |
12503 | |
12504 | ps = packet_support (PACKET_vFile_open); | |
12505 | } | |
12506 | ||
12507 | if (ps == PACKET_DISABLE) | |
12508 | { | |
12509 | static int warning_issued = 0; | |
12510 | ||
12511 | if (!warning_issued) | |
12512 | { | |
12513 | warning (_("remote target does not support file" | |
12514 | " transfer, attempting to access files" | |
12515 | " from local filesystem.")); | |
12516 | warning_issued = 1; | |
12517 | } | |
12518 | ||
57810aa7 | 12519 | return true; |
e3dd7556 GB |
12520 | } |
12521 | } | |
12522 | ||
57810aa7 | 12523 | return false; |
e3dd7556 GB |
12524 | } |
12525 | ||
a6b151f1 DJ |
12526 | static int |
12527 | remote_fileio_errno_to_host (int errnum) | |
12528 | { | |
12529 | switch (errnum) | |
12530 | { | |
12531 | case FILEIO_EPERM: | |
dda83cd7 | 12532 | return EPERM; |
a6b151f1 | 12533 | case FILEIO_ENOENT: |
dda83cd7 | 12534 | return ENOENT; |
a6b151f1 | 12535 | case FILEIO_EINTR: |
dda83cd7 | 12536 | return EINTR; |
a6b151f1 | 12537 | case FILEIO_EIO: |
dda83cd7 | 12538 | return EIO; |
a6b151f1 | 12539 | case FILEIO_EBADF: |
dda83cd7 | 12540 | return EBADF; |
a6b151f1 | 12541 | case FILEIO_EACCES: |
dda83cd7 | 12542 | return EACCES; |
a6b151f1 | 12543 | case FILEIO_EFAULT: |
dda83cd7 | 12544 | return EFAULT; |
a6b151f1 | 12545 | case FILEIO_EBUSY: |
dda83cd7 | 12546 | return EBUSY; |
a6b151f1 | 12547 | case FILEIO_EEXIST: |
dda83cd7 | 12548 | return EEXIST; |
a6b151f1 | 12549 | case FILEIO_ENODEV: |
dda83cd7 | 12550 | return ENODEV; |
a6b151f1 | 12551 | case FILEIO_ENOTDIR: |
dda83cd7 | 12552 | return ENOTDIR; |
a6b151f1 | 12553 | case FILEIO_EISDIR: |
dda83cd7 | 12554 | return EISDIR; |
a6b151f1 | 12555 | case FILEIO_EINVAL: |
dda83cd7 | 12556 | return EINVAL; |
a6b151f1 | 12557 | case FILEIO_ENFILE: |
dda83cd7 | 12558 | return ENFILE; |
a6b151f1 | 12559 | case FILEIO_EMFILE: |
dda83cd7 | 12560 | return EMFILE; |
a6b151f1 | 12561 | case FILEIO_EFBIG: |
dda83cd7 | 12562 | return EFBIG; |
a6b151f1 | 12563 | case FILEIO_ENOSPC: |
dda83cd7 | 12564 | return ENOSPC; |
a6b151f1 | 12565 | case FILEIO_ESPIPE: |
dda83cd7 | 12566 | return ESPIPE; |
a6b151f1 | 12567 | case FILEIO_EROFS: |
dda83cd7 | 12568 | return EROFS; |
a6b151f1 | 12569 | case FILEIO_ENOSYS: |
dda83cd7 | 12570 | return ENOSYS; |
a6b151f1 | 12571 | case FILEIO_ENAMETOOLONG: |
dda83cd7 | 12572 | return ENAMETOOLONG; |
a6b151f1 DJ |
12573 | } |
12574 | return -1; | |
12575 | } | |
12576 | ||
12577 | static char * | |
12578 | remote_hostio_error (int errnum) | |
12579 | { | |
12580 | int host_error = remote_fileio_errno_to_host (errnum); | |
12581 | ||
12582 | if (host_error == -1) | |
12583 | error (_("Unknown remote I/O error %d"), errnum); | |
12584 | else | |
12585 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12586 | } | |
12587 | ||
440b7aec PA |
12588 | /* A RAII wrapper around a remote file descriptor. */ |
12589 | ||
12590 | class scoped_remote_fd | |
a6b151f1 | 12591 | { |
440b7aec | 12592 | public: |
6b8edb51 PA |
12593 | scoped_remote_fd (remote_target *remote, int fd) |
12594 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12595 | { |
12596 | } | |
a6b151f1 | 12597 | |
440b7aec PA |
12598 | ~scoped_remote_fd () |
12599 | { | |
12600 | if (m_fd != -1) | |
12601 | { | |
12602 | try | |
12603 | { | |
12604 | int remote_errno; | |
6b8edb51 | 12605 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12606 | } |
12607 | catch (...) | |
12608 | { | |
12609 | /* Swallow exception before it escapes the dtor. If | |
12610 | something goes wrong, likely the connection is gone, | |
12611 | and there's nothing else that can be done. */ | |
12612 | } | |
12613 | } | |
12614 | } | |
12615 | ||
12616 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12617 | ||
12618 | /* Release ownership of the file descriptor, and return it. */ | |
88a774b9 | 12619 | ATTRIBUTE_UNUSED_RESULT int release () noexcept |
440b7aec PA |
12620 | { |
12621 | int fd = m_fd; | |
12622 | m_fd = -1; | |
12623 | return fd; | |
12624 | } | |
12625 | ||
12626 | /* Return the owned file descriptor. */ | |
12627 | int get () const noexcept | |
12628 | { | |
12629 | return m_fd; | |
12630 | } | |
12631 | ||
12632 | private: | |
6b8edb51 PA |
12633 | /* The remote target. */ |
12634 | remote_target *m_remote; | |
12635 | ||
440b7aec PA |
12636 | /* The owned remote I/O file descriptor. */ |
12637 | int m_fd; | |
12638 | }; | |
a6b151f1 DJ |
12639 | |
12640 | void | |
12641 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12642 | { |
12643 | remote_target *remote = get_current_remote_target (); | |
12644 | ||
12645 | if (remote == nullptr) | |
12646 | error (_("command can only be used with remote target")); | |
12647 | ||
12648 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12649 | } | |
12650 | ||
12651 | void | |
12652 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12653 | int from_tty) | |
a6b151f1 | 12654 | { |
440b7aec | 12655 | int retcode, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12656 | int bytes_in_buffer; |
12657 | int saw_eof; | |
12658 | ULONGEST offset; | |
a6b151f1 | 12659 | |
d419f42d | 12660 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12661 | if (file == NULL) |
12662 | perror_with_name (local_file); | |
a6b151f1 | 12663 | |
440b7aec | 12664 | scoped_remote_fd fd |
6b8edb51 PA |
12665 | (this, remote_hostio_open (NULL, |
12666 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12667 | | FILEIO_O_TRUNC), | |
12668 | 0700, 0, &remote_errno)); | |
440b7aec | 12669 | if (fd.get () == -1) |
a6b151f1 DJ |
12670 | remote_hostio_error (remote_errno); |
12671 | ||
12672 | /* Send up to this many bytes at once. They won't all fit in the | |
12673 | remote packet limit, so we'll transfer slightly fewer. */ | |
12674 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12675 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12676 | |
a6b151f1 DJ |
12677 | bytes_in_buffer = 0; |
12678 | saw_eof = 0; | |
12679 | offset = 0; | |
12680 | while (bytes_in_buffer || !saw_eof) | |
12681 | { | |
12682 | if (!saw_eof) | |
12683 | { | |
5ca3b260 | 12684 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12685 | io_size - bytes_in_buffer, |
d419f42d | 12686 | file.get ()); |
a6b151f1 DJ |
12687 | if (bytes == 0) |
12688 | { | |
d419f42d | 12689 | if (ferror (file.get ())) |
a6b151f1 DJ |
12690 | error (_("Error reading %s."), local_file); |
12691 | else | |
12692 | { | |
12693 | /* EOF. Unless there is something still in the | |
12694 | buffer from the last iteration, we are done. */ | |
12695 | saw_eof = 1; | |
12696 | if (bytes_in_buffer == 0) | |
12697 | break; | |
12698 | } | |
12699 | } | |
12700 | } | |
12701 | else | |
12702 | bytes = 0; | |
12703 | ||
12704 | bytes += bytes_in_buffer; | |
12705 | bytes_in_buffer = 0; | |
12706 | ||
5ca3b260 | 12707 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 12708 | offset, &remote_errno); |
a6b151f1 DJ |
12709 | |
12710 | if (retcode < 0) | |
12711 | remote_hostio_error (remote_errno); | |
12712 | else if (retcode == 0) | |
12713 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12714 | else if (retcode < bytes) | |
12715 | { | |
12716 | /* Short write. Save the rest of the read data for the next | |
12717 | write. */ | |
12718 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 12719 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
12720 | } |
12721 | ||
12722 | offset += retcode; | |
12723 | } | |
12724 | ||
6b8edb51 | 12725 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12726 | remote_hostio_error (remote_errno); |
12727 | ||
12728 | if (from_tty) | |
12729 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
a6b151f1 DJ |
12730 | } |
12731 | ||
12732 | void | |
12733 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
12734 | { |
12735 | remote_target *remote = get_current_remote_target (); | |
12736 | ||
12737 | if (remote == nullptr) | |
12738 | error (_("command can only be used with remote target")); | |
12739 | ||
12740 | remote->remote_file_get (remote_file, local_file, from_tty); | |
12741 | } | |
12742 | ||
12743 | void | |
12744 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
12745 | int from_tty) | |
a6b151f1 | 12746 | { |
440b7aec | 12747 | int remote_errno, bytes, io_size; |
a6b151f1 | 12748 | ULONGEST offset; |
a6b151f1 | 12749 | |
440b7aec | 12750 | scoped_remote_fd fd |
6b8edb51 PA |
12751 | (this, remote_hostio_open (NULL, |
12752 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12753 | &remote_errno)); | |
440b7aec | 12754 | if (fd.get () == -1) |
a6b151f1 DJ |
12755 | remote_hostio_error (remote_errno); |
12756 | ||
d419f42d | 12757 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12758 | if (file == NULL) |
12759 | perror_with_name (local_file); | |
a6b151f1 DJ |
12760 | |
12761 | /* Send up to this many bytes at once. They won't all fit in the | |
12762 | remote packet limit, so we'll transfer slightly fewer. */ | |
12763 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12764 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12765 | |
a6b151f1 DJ |
12766 | offset = 0; |
12767 | while (1) | |
12768 | { | |
5ca3b260 | 12769 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 12770 | &remote_errno); |
a6b151f1 DJ |
12771 | if (bytes == 0) |
12772 | /* Success, but no bytes, means end-of-file. */ | |
12773 | break; | |
12774 | if (bytes == -1) | |
12775 | remote_hostio_error (remote_errno); | |
12776 | ||
12777 | offset += bytes; | |
12778 | ||
5ca3b260 | 12779 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
12780 | if (bytes == 0) |
12781 | perror_with_name (local_file); | |
12782 | } | |
12783 | ||
6b8edb51 | 12784 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12785 | remote_hostio_error (remote_errno); |
12786 | ||
12787 | if (from_tty) | |
12788 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
a6b151f1 DJ |
12789 | } |
12790 | ||
12791 | void | |
12792 | remote_file_delete (const char *remote_file, int from_tty) | |
12793 | { | |
6b8edb51 | 12794 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 12795 | |
6b8edb51 | 12796 | if (remote == nullptr) |
a6b151f1 DJ |
12797 | error (_("command can only be used with remote target")); |
12798 | ||
6b8edb51 PA |
12799 | remote->remote_file_delete (remote_file, from_tty); |
12800 | } | |
12801 | ||
12802 | void | |
12803 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
12804 | { | |
12805 | int retcode, remote_errno; | |
12806 | ||
12807 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
12808 | if (retcode == -1) |
12809 | remote_hostio_error (remote_errno); | |
12810 | ||
12811 | if (from_tty) | |
12812 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12813 | } | |
12814 | ||
12815 | static void | |
ac88e2de | 12816 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12817 | { |
d1a41061 PP |
12818 | if (args == NULL) |
12819 | error_no_arg (_("file to put")); | |
12820 | ||
773a1edc | 12821 | gdb_argv argv (args); |
a6b151f1 DJ |
12822 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12823 | error (_("Invalid parameters to remote put")); | |
12824 | ||
12825 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12826 | } |
12827 | ||
12828 | static void | |
ac88e2de | 12829 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12830 | { |
d1a41061 PP |
12831 | if (args == NULL) |
12832 | error_no_arg (_("file to get")); | |
12833 | ||
773a1edc | 12834 | gdb_argv argv (args); |
a6b151f1 DJ |
12835 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12836 | error (_("Invalid parameters to remote get")); | |
12837 | ||
12838 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12839 | } |
12840 | ||
12841 | static void | |
ac88e2de | 12842 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12843 | { |
d1a41061 PP |
12844 | if (args == NULL) |
12845 | error_no_arg (_("file to delete")); | |
12846 | ||
773a1edc | 12847 | gdb_argv argv (args); |
a6b151f1 DJ |
12848 | if (argv[0] == NULL || argv[1] != NULL) |
12849 | error (_("Invalid parameters to remote delete")); | |
12850 | ||
12851 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12852 | } |
12853 | ||
57810aa7 | 12854 | bool |
f6ac5f3d | 12855 | remote_target::can_execute_reverse () |
b2175913 | 12856 | { |
4082afcc PA |
12857 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12858 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 12859 | return true; |
40ab02ce | 12860 | else |
57810aa7 | 12861 | return false; |
b2175913 MS |
12862 | } |
12863 | ||
57810aa7 | 12864 | bool |
f6ac5f3d | 12865 | remote_target::supports_non_stop () |
74531fed | 12866 | { |
57810aa7 | 12867 | return true; |
74531fed PA |
12868 | } |
12869 | ||
57810aa7 | 12870 | bool |
f6ac5f3d | 12871 | remote_target::supports_disable_randomization () |
03583c20 UW |
12872 | { |
12873 | /* Only supported in extended mode. */ | |
57810aa7 | 12874 | return false; |
03583c20 UW |
12875 | } |
12876 | ||
57810aa7 | 12877 | bool |
f6ac5f3d | 12878 | remote_target::supports_multi_process () |
8a305172 PA |
12879 | { |
12880 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12881 | |
8020350c | 12882 | return remote_multi_process_p (rs); |
8a305172 PA |
12883 | } |
12884 | ||
70221824 | 12885 | static int |
f6ac5f3d | 12886 | remote_supports_cond_tracepoints () |
782b2b07 | 12887 | { |
4082afcc | 12888 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12889 | } |
12890 | ||
57810aa7 | 12891 | bool |
f6ac5f3d | 12892 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 12893 | { |
4082afcc | 12894 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12895 | } |
12896 | ||
70221824 | 12897 | static int |
f6ac5f3d | 12898 | remote_supports_fast_tracepoints () |
7a697b8d | 12899 | { |
4082afcc | 12900 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12901 | } |
12902 | ||
0fb4aa4b | 12903 | static int |
f6ac5f3d | 12904 | remote_supports_static_tracepoints () |
0fb4aa4b | 12905 | { |
4082afcc | 12906 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12907 | } |
12908 | ||
1e4d1764 | 12909 | static int |
f6ac5f3d | 12910 | remote_supports_install_in_trace () |
1e4d1764 | 12911 | { |
4082afcc | 12912 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12913 | } |
12914 | ||
57810aa7 | 12915 | bool |
f6ac5f3d | 12916 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 12917 | { |
4082afcc PA |
12918 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12919 | == PACKET_ENABLE); | |
d248b706 KY |
12920 | } |
12921 | ||
57810aa7 | 12922 | bool |
f6ac5f3d | 12923 | remote_target::supports_string_tracing () |
3065dfb6 | 12924 | { |
4082afcc | 12925 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12926 | } |
12927 | ||
57810aa7 | 12928 | bool |
f6ac5f3d | 12929 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 12930 | { |
4082afcc | 12931 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12932 | } |
12933 | ||
f6ac5f3d PA |
12934 | void |
12935 | remote_target::trace_init () | |
35b1e5cc | 12936 | { |
b6bb3468 PA |
12937 | struct remote_state *rs = get_remote_state (); |
12938 | ||
35b1e5cc | 12939 | putpkt ("QTinit"); |
b6bb3468 | 12940 | remote_get_noisy_reply (); |
8d64371b | 12941 | if (strcmp (rs->buf.data (), "OK") != 0) |
35b1e5cc SS |
12942 | error (_("Target does not support this command.")); |
12943 | } | |
12944 | ||
409873ef SS |
12945 | /* Recursive routine to walk through command list including loops, and |
12946 | download packets for each command. */ | |
12947 | ||
6b8edb51 PA |
12948 | void |
12949 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
12950 | struct command_line *cmds) | |
409873ef SS |
12951 | { |
12952 | struct remote_state *rs = get_remote_state (); | |
12953 | struct command_line *cmd; | |
12954 | ||
12955 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12956 | { | |
0df8b418 | 12957 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 12958 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 12959 | encode_source_string (num, addr, "cmd", cmd->line, |
8d64371b TT |
12960 | rs->buf.data () + strlen (rs->buf.data ()), |
12961 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 12962 | putpkt (rs->buf); |
b6bb3468 | 12963 | remote_get_noisy_reply (); |
8d64371b | 12964 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
12965 | warning (_("Target does not support source download.")); |
12966 | ||
12967 | if (cmd->control_type == while_control | |
12968 | || cmd->control_type == while_stepping_control) | |
12969 | { | |
12973681 | 12970 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 12971 | |
0df8b418 | 12972 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 12973 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 12974 | encode_source_string (num, addr, "cmd", "end", |
8d64371b TT |
12975 | rs->buf.data () + strlen (rs->buf.data ()), |
12976 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 12977 | putpkt (rs->buf); |
b6bb3468 | 12978 | remote_get_noisy_reply (); |
8d64371b | 12979 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
12980 | warning (_("Target does not support source download.")); |
12981 | } | |
12982 | } | |
12983 | } | |
12984 | ||
f6ac5f3d PA |
12985 | void |
12986 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc SS |
12987 | { |
12988 | CORE_ADDR tpaddr; | |
409873ef | 12989 | char addrbuf[40]; |
b44ec619 SM |
12990 | std::vector<std::string> tdp_actions; |
12991 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 12992 | char *pkt; |
e8ba3115 | 12993 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12994 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 12995 | struct remote_state *rs = get_remote_state (); |
3df3a985 | 12996 | int ret; |
ff36536c | 12997 | const char *err_msg = _("Tracepoint packet too large for target."); |
3df3a985 PFC |
12998 | size_t size_left; |
12999 | ||
13000 | /* We use a buffer other than rs->buf because we'll build strings | |
13001 | across multiple statements, and other statements in between could | |
13002 | modify rs->buf. */ | |
13003 | gdb::char_vector buf (get_remote_packet_size ()); | |
35b1e5cc | 13004 | |
dc673c81 | 13005 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
13006 | |
13007 | tpaddr = loc->address; | |
53807e9f | 13008 | strcpy (addrbuf, phex (tpaddr, sizeof (CORE_ADDR))); |
3df3a985 PFC |
13009 | ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x", |
13010 | b->number, addrbuf, /* address */ | |
13011 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
13012 | t->step_count, t->pass_count); | |
13013 | ||
13014 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13015 | error ("%s", err_msg); |
3df3a985 | 13016 | |
e8ba3115 YQ |
13017 | /* Fast tracepoints are mostly handled by the target, but we can |
13018 | tell the target how big of an instruction block should be moved | |
13019 | around. */ | |
13020 | if (b->type == bp_fast_tracepoint) | |
13021 | { | |
13022 | /* Only test for support at download time; we may not know | |
13023 | target capabilities at definition time. */ | |
13024 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 13025 | { |
6b940e6a PL |
13026 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
13027 | NULL)) | |
3df3a985 PFC |
13028 | { |
13029 | size_left = buf.size () - strlen (buf.data ()); | |
13030 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13031 | size_left, ":F%x", | |
13032 | gdb_insn_length (loc->gdbarch, tpaddr)); | |
13033 | ||
13034 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13035 | error ("%s", err_msg); |
3df3a985 | 13036 | } |
35b1e5cc | 13037 | else |
e8ba3115 YQ |
13038 | /* If it passed validation at definition but fails now, |
13039 | something is very wrong. */ | |
13040 | internal_error (__FILE__, __LINE__, | |
13041 | _("Fast tracepoint not " | |
13042 | "valid during download")); | |
35b1e5cc | 13043 | } |
e8ba3115 YQ |
13044 | else |
13045 | /* Fast tracepoints are functionally identical to regular | |
13046 | tracepoints, so don't take lack of support as a reason to | |
13047 | give up on the trace run. */ | |
13048 | warning (_("Target does not support fast tracepoints, " | |
13049 | "downloading %d as regular tracepoint"), b->number); | |
13050 | } | |
13051 | else if (b->type == bp_static_tracepoint) | |
13052 | { | |
13053 | /* Only test for support at download time; we may not know | |
13054 | target capabilities at definition time. */ | |
13055 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 13056 | { |
e8ba3115 | 13057 | struct static_tracepoint_marker marker; |
0fb4aa4b | 13058 | |
e8ba3115 | 13059 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
3df3a985 PFC |
13060 | { |
13061 | size_left = buf.size () - strlen (buf.data ()); | |
13062 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13063 | size_left, ":S"); | |
13064 | ||
13065 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13066 | error ("%s", err_msg); |
3df3a985 | 13067 | } |
0fb4aa4b | 13068 | else |
e8ba3115 | 13069 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 13070 | } |
e8ba3115 YQ |
13071 | else |
13072 | /* Fast tracepoints are functionally identical to regular | |
13073 | tracepoints, so don't take lack of support as a reason | |
13074 | to give up on the trace run. */ | |
13075 | error (_("Target does not support static tracepoints")); | |
13076 | } | |
13077 | /* If the tracepoint has a conditional, make it into an agent | |
13078 | expression and append to the definition. */ | |
13079 | if (loc->cond) | |
13080 | { | |
13081 | /* Only test support at download time, we may not know target | |
13082 | capabilities at definition time. */ | |
13083 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 13084 | { |
3df3a985 PFC |
13085 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, |
13086 | loc->cond.get ()); | |
13087 | ||
13088 | size_left = buf.size () - strlen (buf.data ()); | |
13089 | ||
13090 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13091 | size_left, ":X%x,", aexpr->len); | |
13092 | ||
13093 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13094 | error ("%s", err_msg); |
3df3a985 PFC |
13095 | |
13096 | size_left = buf.size () - strlen (buf.data ()); | |
13097 | ||
13098 | /* Two bytes to encode each aexpr byte, plus the terminating | |
13099 | null byte. */ | |
13100 | if (aexpr->len * 2 + 1 > size_left) | |
a7f25a84 | 13101 | error ("%s", err_msg); |
3df3a985 PFC |
13102 | |
13103 | pkt = buf.data () + strlen (buf.data ()); | |
13104 | ||
b44ec619 | 13105 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
13106 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
13107 | *pkt = '\0'; | |
35b1e5cc | 13108 | } |
e8ba3115 YQ |
13109 | else |
13110 | warning (_("Target does not support conditional tracepoints, " | |
13111 | "ignoring tp %d cond"), b->number); | |
13112 | } | |
35b1e5cc | 13113 | |
d9b3f62e | 13114 | if (b->commands || *default_collect) |
3df3a985 PFC |
13115 | { |
13116 | size_left = buf.size () - strlen (buf.data ()); | |
13117 | ||
13118 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13119 | size_left, "-"); | |
13120 | ||
13121 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13122 | error ("%s", err_msg); |
3df3a985 PFC |
13123 | } |
13124 | ||
13125 | putpkt (buf.data ()); | |
b6bb3468 | 13126 | remote_get_noisy_reply (); |
8d64371b | 13127 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13128 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 13129 | |
e8ba3115 | 13130 | /* do_single_steps (t); */ |
b44ec619 SM |
13131 | for (auto action_it = tdp_actions.begin (); |
13132 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 13133 | { |
b44ec619 SM |
13134 | QUIT; /* Allow user to bail out with ^C. */ |
13135 | ||
aa6f3694 | 13136 | bool has_more = ((action_it + 1) != tdp_actions.end () |
b44ec619 SM |
13137 | || !stepping_actions.empty ()); |
13138 | ||
3df3a985 PFC |
13139 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c", |
13140 | b->number, addrbuf, /* address */ | |
13141 | action_it->c_str (), | |
13142 | has_more ? '-' : 0); | |
13143 | ||
13144 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13145 | error ("%s", err_msg); |
3df3a985 PFC |
13146 | |
13147 | putpkt (buf.data ()); | |
b44ec619 | 13148 | remote_get_noisy_reply (); |
8d64371b | 13149 | if (strcmp (rs->buf.data (), "OK")) |
b44ec619 | 13150 | error (_("Error on target while setting tracepoints.")); |
e8ba3115 | 13151 | } |
409873ef | 13152 | |
05abfc39 PFC |
13153 | for (auto action_it = stepping_actions.begin (); |
13154 | action_it != stepping_actions.end (); action_it++) | |
13155 | { | |
13156 | QUIT; /* Allow user to bail out with ^C. */ | |
13157 | ||
13158 | bool is_first = action_it == stepping_actions.begin (); | |
aa6f3694 | 13159 | bool has_more = (action_it + 1) != stepping_actions.end (); |
05abfc39 | 13160 | |
3df3a985 PFC |
13161 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s", |
13162 | b->number, addrbuf, /* address */ | |
13163 | is_first ? "S" : "", | |
13164 | action_it->c_str (), | |
13165 | has_more ? "-" : ""); | |
13166 | ||
13167 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13168 | error ("%s", err_msg); |
3df3a985 PFC |
13169 | |
13170 | putpkt (buf.data ()); | |
05abfc39 | 13171 | remote_get_noisy_reply (); |
8d64371b | 13172 | if (strcmp (rs->buf.data (), "OK")) |
05abfc39 PFC |
13173 | error (_("Error on target while setting tracepoints.")); |
13174 | } | |
b44ec619 | 13175 | |
4082afcc | 13176 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 13177 | { |
f00aae0f | 13178 | if (b->location != NULL) |
409873ef | 13179 | { |
3df3a985 PFC |
13180 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13181 | ||
13182 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13183 | error ("%s", err_msg); |
3df3a985 | 13184 | |
f00aae0f | 13185 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 13186 | event_location_to_string (b->location.get ()), |
3df3a985 PFC |
13187 | buf.data () + strlen (buf.data ()), |
13188 | buf.size () - strlen (buf.data ())); | |
13189 | putpkt (buf.data ()); | |
b6bb3468 | 13190 | remote_get_noisy_reply (); |
8d64371b | 13191 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13192 | warning (_("Target does not support source download.")); |
409873ef | 13193 | } |
e8ba3115 YQ |
13194 | if (b->cond_string) |
13195 | { | |
3df3a985 PFC |
13196 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13197 | ||
13198 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13199 | error ("%s", err_msg); |
3df3a985 | 13200 | |
e8ba3115 | 13201 | encode_source_string (b->number, loc->address, |
3df3a985 PFC |
13202 | "cond", b->cond_string, |
13203 | buf.data () + strlen (buf.data ()), | |
13204 | buf.size () - strlen (buf.data ())); | |
13205 | putpkt (buf.data ()); | |
b6bb3468 | 13206 | remote_get_noisy_reply (); |
8d64371b | 13207 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 YQ |
13208 | warning (_("Target does not support source download.")); |
13209 | } | |
13210 | remote_download_command_source (b->number, loc->address, | |
13211 | breakpoint_commands (b)); | |
35b1e5cc | 13212 | } |
35b1e5cc SS |
13213 | } |
13214 | ||
57810aa7 | 13215 | bool |
f6ac5f3d | 13216 | remote_target::can_download_tracepoint () |
1e4d1764 | 13217 | { |
1e51243a PA |
13218 | struct remote_state *rs = get_remote_state (); |
13219 | struct trace_status *ts; | |
13220 | int status; | |
13221 | ||
13222 | /* Don't try to install tracepoints until we've relocated our | |
13223 | symbols, and fetched and merged the target's tracepoint list with | |
13224 | ours. */ | |
13225 | if (rs->starting_up) | |
57810aa7 | 13226 | return false; |
1e51243a PA |
13227 | |
13228 | ts = current_trace_status (); | |
f6ac5f3d | 13229 | status = get_trace_status (ts); |
1e4d1764 YQ |
13230 | |
13231 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 13232 | return false; |
1e4d1764 YQ |
13233 | |
13234 | /* If we are in a tracing experiment, but remote stub doesn't support | |
13235 | installing tracepoint in trace, we have to return. */ | |
13236 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 13237 | return false; |
1e4d1764 | 13238 | |
57810aa7 | 13239 | return true; |
1e4d1764 YQ |
13240 | } |
13241 | ||
13242 | ||
f6ac5f3d PA |
13243 | void |
13244 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
13245 | { |
13246 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 13247 | char *p; |
35b1e5cc | 13248 | |
8d64371b | 13249 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
13250 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
13251 | tsv.builtin); | |
8d64371b TT |
13252 | p = rs->buf.data () + strlen (rs->buf.data ()); |
13253 | if ((p - rs->buf.data ()) + tsv.name.length () * 2 | |
13254 | >= get_remote_packet_size ()) | |
00bf0b85 | 13255 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 13256 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 13257 | *p++ = '\0'; |
35b1e5cc | 13258 | putpkt (rs->buf); |
b6bb3468 | 13259 | remote_get_noisy_reply (); |
8d64371b | 13260 | if (rs->buf[0] == '\0') |
ad91cd99 | 13261 | error (_("Target does not support this command.")); |
8d64371b | 13262 | if (strcmp (rs->buf.data (), "OK") != 0) |
ad91cd99 | 13263 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13264 | } |
13265 | ||
f6ac5f3d PA |
13266 | void |
13267 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13268 | { |
13269 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13270 | |
8d64371b | 13271 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTEnable:%x:%s", |
53807e9f TT |
13272 | location->owner->number, |
13273 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13274 | putpkt (rs->buf); |
b6bb3468 | 13275 | remote_get_noisy_reply (); |
8d64371b | 13276 | if (rs->buf[0] == '\0') |
d248b706 | 13277 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13278 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13279 | error (_("Error on target while enabling tracepoint.")); |
13280 | } | |
13281 | ||
f6ac5f3d PA |
13282 | void |
13283 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13284 | { |
13285 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13286 | |
8d64371b | 13287 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDisable:%x:%s", |
53807e9f TT |
13288 | location->owner->number, |
13289 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13290 | putpkt (rs->buf); |
b6bb3468 | 13291 | remote_get_noisy_reply (); |
8d64371b | 13292 | if (rs->buf[0] == '\0') |
d248b706 | 13293 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13294 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13295 | error (_("Error on target while disabling tracepoint.")); |
13296 | } | |
13297 | ||
f6ac5f3d PA |
13298 | void |
13299 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13300 | { |
13301 | asection *s; | |
13302 | bfd_size_type size; | |
608bcef2 | 13303 | bfd_vma vma; |
35b1e5cc | 13304 | int anysecs = 0; |
c2fa21f1 | 13305 | int offset = 0; |
35b1e5cc | 13306 | |
7e10abd1 | 13307 | if (!current_program_space->exec_bfd ()) |
35b1e5cc SS |
13308 | return; /* No information to give. */ |
13309 | ||
b6bb3468 PA |
13310 | struct remote_state *rs = get_remote_state (); |
13311 | ||
8d64371b TT |
13312 | strcpy (rs->buf.data (), "QTro"); |
13313 | offset = strlen (rs->buf.data ()); | |
7e10abd1 | 13314 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
35b1e5cc SS |
13315 | { |
13316 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13317 | int sec_length; |
35b1e5cc SS |
13318 | |
13319 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 13320 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
13321 | (s->flags & SEC_READONLY) == 0) |
13322 | continue; | |
13323 | ||
13324 | anysecs = 1; | |
fd361982 AM |
13325 | vma = bfd_section_vma (s); |
13326 | size = bfd_section_size (s); | |
608bcef2 HZ |
13327 | sprintf_vma (tmp1, vma); |
13328 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 13329 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
8d64371b | 13330 | if (offset + sec_length + 1 > rs->buf.size ()) |
c2fa21f1 | 13331 | { |
4082afcc | 13332 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 13333 | warning (_("\ |
c2fa21f1 HZ |
13334 | Too many sections for read-only sections definition packet.")); |
13335 | break; | |
13336 | } | |
8d64371b | 13337 | xsnprintf (rs->buf.data () + offset, rs->buf.size () - offset, ":%s,%s", |
bba74b36 | 13338 | tmp1, tmp2); |
c2fa21f1 | 13339 | offset += sec_length; |
35b1e5cc SS |
13340 | } |
13341 | if (anysecs) | |
13342 | { | |
b6bb3468 | 13343 | putpkt (rs->buf); |
8d64371b | 13344 | getpkt (&rs->buf, 0); |
35b1e5cc SS |
13345 | } |
13346 | } | |
13347 | ||
f6ac5f3d PA |
13348 | void |
13349 | remote_target::trace_start () | |
35b1e5cc | 13350 | { |
b6bb3468 PA |
13351 | struct remote_state *rs = get_remote_state (); |
13352 | ||
35b1e5cc | 13353 | putpkt ("QTStart"); |
b6bb3468 | 13354 | remote_get_noisy_reply (); |
8d64371b | 13355 | if (rs->buf[0] == '\0') |
ad91cd99 | 13356 | error (_("Target does not support this command.")); |
8d64371b TT |
13357 | if (strcmp (rs->buf.data (), "OK") != 0) |
13358 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13359 | } |
13360 | ||
f6ac5f3d PA |
13361 | int |
13362 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13363 | { |
953b98d1 | 13364 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13365 | char *p = NULL; |
bd3eecc3 | 13366 | enum packet_result result; |
b6bb3468 | 13367 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13368 | |
4082afcc | 13369 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13370 | return -1; |
a744cf53 | 13371 | |
7b9a15e1 | 13372 | /* FIXME we need to get register block size some other way. */ |
5cd63fda | 13373 | trace_regblock_size |
9d6eea31 | 13374 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 13375 | |
049dc89b JK |
13376 | putpkt ("qTStatus"); |
13377 | ||
a70b8144 | 13378 | try |
67f41397 | 13379 | { |
b6bb3468 | 13380 | p = remote_get_noisy_reply (); |
67f41397 | 13381 | } |
230d2906 | 13382 | catch (const gdb_exception_error &ex) |
67f41397 | 13383 | { |
598d3636 JK |
13384 | if (ex.error != TARGET_CLOSE_ERROR) |
13385 | { | |
13386 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13387 | return -1; | |
13388 | } | |
eedc3f4f | 13389 | throw; |
67f41397 | 13390 | } |
00bf0b85 | 13391 | |
bd3eecc3 PA |
13392 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
13393 | ||
00bf0b85 | 13394 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13395 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13396 | return -1; |
35b1e5cc | 13397 | |
00bf0b85 | 13398 | /* We're working with a live target. */ |
f5911ea1 | 13399 | ts->filename = NULL; |
00bf0b85 | 13400 | |
00bf0b85 | 13401 | if (*p++ != 'T') |
8d64371b | 13402 | error (_("Bogus trace status reply from target: %s"), rs->buf.data ()); |
35b1e5cc | 13403 | |
84cebc4a YQ |
13404 | /* Function 'parse_trace_status' sets default value of each field of |
13405 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13406 | parse_trace_status (p, ts); |
13407 | ||
13408 | return ts->running; | |
35b1e5cc SS |
13409 | } |
13410 | ||
f6ac5f3d PA |
13411 | void |
13412 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13413 | struct uploaded_tp *utp) | |
f196051f SS |
13414 | { |
13415 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
13416 | char *reply; |
13417 | struct bp_location *loc; | |
13418 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 13419 | size_t size = get_remote_packet_size (); |
f196051f SS |
13420 | |
13421 | if (tp) | |
13422 | { | |
c1fc2657 | 13423 | tp->hit_count = 0; |
f196051f | 13424 | tp->traceframe_usage = 0; |
c1fc2657 | 13425 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
13426 | { |
13427 | /* If the tracepoint was never downloaded, don't go asking for | |
13428 | any status. */ | |
13429 | if (tp->number_on_target == 0) | |
13430 | continue; | |
8d64371b | 13431 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", tp->number_on_target, |
bba74b36 | 13432 | phex_nz (loc->address, 0)); |
f196051f | 13433 | putpkt (rs->buf); |
b6bb3468 | 13434 | reply = remote_get_noisy_reply (); |
f196051f SS |
13435 | if (reply && *reply) |
13436 | { | |
13437 | if (*reply == 'V') | |
13438 | parse_tracepoint_status (reply + 1, bp, utp); | |
13439 | } | |
13440 | } | |
13441 | } | |
13442 | else if (utp) | |
13443 | { | |
13444 | utp->hit_count = 0; | |
13445 | utp->traceframe_usage = 0; | |
8d64371b | 13446 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", utp->number, |
bba74b36 | 13447 | phex_nz (utp->addr, 0)); |
f196051f | 13448 | putpkt (rs->buf); |
b6bb3468 | 13449 | reply = remote_get_noisy_reply (); |
f196051f SS |
13450 | if (reply && *reply) |
13451 | { | |
13452 | if (*reply == 'V') | |
13453 | parse_tracepoint_status (reply + 1, bp, utp); | |
13454 | } | |
13455 | } | |
13456 | } | |
13457 | ||
f6ac5f3d PA |
13458 | void |
13459 | remote_target::trace_stop () | |
35b1e5cc | 13460 | { |
b6bb3468 PA |
13461 | struct remote_state *rs = get_remote_state (); |
13462 | ||
35b1e5cc | 13463 | putpkt ("QTStop"); |
b6bb3468 | 13464 | remote_get_noisy_reply (); |
8d64371b | 13465 | if (rs->buf[0] == '\0') |
ad91cd99 | 13466 | error (_("Target does not support this command.")); |
8d64371b TT |
13467 | if (strcmp (rs->buf.data (), "OK") != 0) |
13468 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13469 | } |
13470 | ||
f6ac5f3d PA |
13471 | int |
13472 | remote_target::trace_find (enum trace_find_type type, int num, | |
13473 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13474 | int *tpp) | |
35b1e5cc SS |
13475 | { |
13476 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 13477 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
35b1e5cc SS |
13478 | char *p, *reply; |
13479 | int target_frameno = -1, target_tracept = -1; | |
13480 | ||
e6e4e701 PA |
13481 | /* Lookups other than by absolute frame number depend on the current |
13482 | trace selected, so make sure it is correct on the remote end | |
13483 | first. */ | |
13484 | if (type != tfind_number) | |
13485 | set_remote_traceframe (); | |
13486 | ||
8d64371b | 13487 | p = rs->buf.data (); |
35b1e5cc SS |
13488 | strcpy (p, "QTFrame:"); |
13489 | p = strchr (p, '\0'); | |
13490 | switch (type) | |
13491 | { | |
13492 | case tfind_number: | |
bba74b36 | 13493 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13494 | break; |
13495 | case tfind_pc: | |
bba74b36 | 13496 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13497 | break; |
13498 | case tfind_tp: | |
bba74b36 | 13499 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13500 | break; |
13501 | case tfind_range: | |
bba74b36 YQ |
13502 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13503 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13504 | break; |
13505 | case tfind_outside: | |
bba74b36 YQ |
13506 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13507 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13508 | break; |
13509 | default: | |
9b20d036 | 13510 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13511 | } |
13512 | ||
13513 | putpkt (rs->buf); | |
b6bb3468 | 13514 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13515 | if (*reply == '\0') |
13516 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13517 | |
13518 | while (reply && *reply) | |
13519 | switch (*reply) | |
13520 | { | |
13521 | case 'F': | |
f197e0f1 VP |
13522 | p = ++reply; |
13523 | target_frameno = (int) strtol (p, &reply, 16); | |
13524 | if (reply == p) | |
13525 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13526 | /* Don't update our remote traceframe number cache on failure |
13527 | to select a remote traceframe. */ | |
f197e0f1 VP |
13528 | if (target_frameno == -1) |
13529 | return -1; | |
35b1e5cc SS |
13530 | break; |
13531 | case 'T': | |
f197e0f1 VP |
13532 | p = ++reply; |
13533 | target_tracept = (int) strtol (p, &reply, 16); | |
13534 | if (reply == p) | |
13535 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13536 | break; |
13537 | case 'O': /* "OK"? */ | |
13538 | if (reply[1] == 'K' && reply[2] == '\0') | |
13539 | reply += 2; | |
13540 | else | |
13541 | error (_("Bogus reply from target: %s"), reply); | |
13542 | break; | |
13543 | default: | |
13544 | error (_("Bogus reply from target: %s"), reply); | |
13545 | } | |
13546 | if (tpp) | |
13547 | *tpp = target_tracept; | |
e6e4e701 | 13548 | |
262e1174 | 13549 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13550 | return target_frameno; |
13551 | } | |
13552 | ||
57810aa7 | 13553 | bool |
f6ac5f3d | 13554 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13555 | { |
13556 | struct remote_state *rs = get_remote_state (); | |
13557 | char *reply; | |
13558 | ULONGEST uval; | |
13559 | ||
e6e4e701 PA |
13560 | set_remote_traceframe (); |
13561 | ||
8d64371b | 13562 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13563 | putpkt (rs->buf); |
b6bb3468 | 13564 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13565 | if (reply && *reply) |
13566 | { | |
13567 | if (*reply == 'V') | |
13568 | { | |
13569 | unpack_varlen_hex (reply + 1, &uval); | |
13570 | *val = (LONGEST) uval; | |
57810aa7 | 13571 | return true; |
35b1e5cc SS |
13572 | } |
13573 | } | |
57810aa7 | 13574 | return false; |
35b1e5cc SS |
13575 | } |
13576 | ||
f6ac5f3d PA |
13577 | int |
13578 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13579 | { |
13580 | struct remote_state *rs = get_remote_state (); | |
13581 | char *p, *reply; | |
13582 | ||
8d64371b | 13583 | p = rs->buf.data (); |
00bf0b85 SS |
13584 | strcpy (p, "QTSave:"); |
13585 | p += strlen (p); | |
8d64371b TT |
13586 | if ((p - rs->buf.data ()) + strlen (filename) * 2 |
13587 | >= get_remote_packet_size ()) | |
00bf0b85 | 13588 | error (_("Remote file name too long for trace save packet")); |
9f1b45b0 | 13589 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13590 | *p++ = '\0'; |
13591 | putpkt (rs->buf); | |
b6bb3468 | 13592 | reply = remote_get_noisy_reply (); |
d6c5869f | 13593 | if (*reply == '\0') |
ad91cd99 PA |
13594 | error (_("Target does not support this command.")); |
13595 | if (strcmp (reply, "OK") != 0) | |
13596 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13597 | return 0; |
13598 | } | |
13599 | ||
13600 | /* This is basically a memory transfer, but needs to be its own packet | |
13601 | because we don't know how the target actually organizes its trace | |
13602 | memory, plus we want to be able to ask for as much as possible, but | |
13603 | not be unhappy if we don't get as much as we ask for. */ | |
13604 | ||
f6ac5f3d PA |
13605 | LONGEST |
13606 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13607 | { |
13608 | struct remote_state *rs = get_remote_state (); | |
13609 | char *reply; | |
13610 | char *p; | |
13611 | int rslt; | |
13612 | ||
8d64371b | 13613 | p = rs->buf.data (); |
00bf0b85 SS |
13614 | strcpy (p, "qTBuffer:"); |
13615 | p += strlen (p); | |
13616 | p += hexnumstr (p, offset); | |
13617 | *p++ = ','; | |
13618 | p += hexnumstr (p, len); | |
13619 | *p++ = '\0'; | |
13620 | ||
13621 | putpkt (rs->buf); | |
b6bb3468 | 13622 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13623 | if (reply && *reply) |
13624 | { | |
13625 | /* 'l' by itself means we're at the end of the buffer and | |
13626 | there is nothing more to get. */ | |
13627 | if (*reply == 'l') | |
13628 | return 0; | |
13629 | ||
13630 | /* Convert the reply into binary. Limit the number of bytes to | |
13631 | convert according to our passed-in buffer size, rather than | |
13632 | what was returned in the packet; if the target is | |
13633 | unexpectedly generous and gives us a bigger reply than we | |
13634 | asked for, we don't want to crash. */ | |
b6bb3468 | 13635 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13636 | return rslt; |
13637 | } | |
13638 | ||
13639 | /* Something went wrong, flag as an error. */ | |
13640 | return -1; | |
13641 | } | |
13642 | ||
f6ac5f3d PA |
13643 | void |
13644 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13645 | { |
13646 | struct remote_state *rs = get_remote_state (); | |
13647 | ||
4082afcc | 13648 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13649 | { |
ad91cd99 PA |
13650 | char *reply; |
13651 | ||
8d64371b TT |
13652 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13653 | "QTDisconnected:%x", val); | |
33da3f1c | 13654 | putpkt (rs->buf); |
b6bb3468 | 13655 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13656 | if (*reply == '\0') |
33da3f1c | 13657 | error (_("Target does not support this command.")); |
ad91cd99 | 13658 | if (strcmp (reply, "OK") != 0) |
dda83cd7 | 13659 | error (_("Bogus reply from target: %s"), reply); |
33da3f1c SS |
13660 | } |
13661 | else if (val) | |
13662 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13663 | } |
13664 | ||
f6ac5f3d PA |
13665 | int |
13666 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c | 13667 | { |
5b6d1e4f | 13668 | thread_info *info = find_thread_ptid (this, ptid); |
a744cf53 | 13669 | |
7aabaf9d SM |
13670 | if (info != NULL && info->priv != NULL) |
13671 | return get_remote_thread_info (info)->core; | |
13672 | ||
dc146f7c VP |
13673 | return -1; |
13674 | } | |
13675 | ||
f6ac5f3d PA |
13676 | void |
13677 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13678 | { |
13679 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13680 | char *reply; |
4daf5ac0 | 13681 | |
8d64371b TT |
13682 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13683 | "QTBuffer:circular:%x", val); | |
4daf5ac0 | 13684 | putpkt (rs->buf); |
b6bb3468 | 13685 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13686 | if (*reply == '\0') |
4daf5ac0 | 13687 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13688 | if (strcmp (reply, "OK") != 0) |
13689 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13690 | } |
13691 | ||
f6ac5f3d PA |
13692 | traceframe_info_up |
13693 | remote_target::traceframe_info () | |
b3b9301e | 13694 | { |
9018be22 | 13695 | gdb::optional<gdb::char_vector> text |
8b88a78e | 13696 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_TRACEFRAME_INFO, |
b7b030ad | 13697 | NULL); |
9018be22 SM |
13698 | if (text) |
13699 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13700 | |
13701 | return NULL; | |
13702 | } | |
13703 | ||
405f8e94 SS |
13704 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13705 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13706 | if the packet is not supported, and 0 if the minimum instruction | |
13707 | length is unknown. */ | |
13708 | ||
f6ac5f3d PA |
13709 | int |
13710 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13711 | { |
13712 | struct remote_state *rs = get_remote_state (); | |
13713 | char *reply; | |
13714 | ||
e886a173 PA |
13715 | /* If we're not debugging a process yet, the IPA can't be |
13716 | loaded. */ | |
55f6301a | 13717 | if (!target_has_execution ()) |
e886a173 PA |
13718 | return 0; |
13719 | ||
13720 | /* Make sure the remote is pointing at the right process. */ | |
13721 | set_general_process (); | |
13722 | ||
8d64371b | 13723 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13724 | putpkt (rs->buf); |
b6bb3468 | 13725 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13726 | if (*reply == '\0') |
13727 | return -1; | |
13728 | else | |
13729 | { | |
13730 | ULONGEST min_insn_len; | |
13731 | ||
13732 | unpack_varlen_hex (reply, &min_insn_len); | |
13733 | ||
13734 | return (int) min_insn_len; | |
13735 | } | |
13736 | } | |
13737 | ||
f6ac5f3d PA |
13738 | void |
13739 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13740 | { |
4082afcc | 13741 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13742 | { |
13743 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13744 | char *buf = rs->buf.data (); |
13745 | char *endbuf = buf + get_remote_packet_size (); | |
f6f899bf HAQ |
13746 | enum packet_result result; |
13747 | ||
13748 | gdb_assert (val >= 0 || val == -1); | |
13749 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13750 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13751 | if (val < 0) | |
13752 | { | |
13753 | *buf++ = '-'; | |
dda83cd7 | 13754 | buf += hexnumstr (buf, (ULONGEST) -val); |
f6f899bf HAQ |
13755 | } |
13756 | else | |
13757 | buf += hexnumstr (buf, (ULONGEST) val); | |
13758 | ||
13759 | putpkt (rs->buf); | |
b6bb3468 | 13760 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13761 | result = packet_ok (rs->buf, |
13762 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13763 | ||
13764 | if (result != PACKET_OK) | |
8d64371b | 13765 | warning (_("Bogus reply from target: %s"), rs->buf.data ()); |
f6f899bf HAQ |
13766 | } |
13767 | } | |
13768 | ||
57810aa7 | 13769 | bool |
f6ac5f3d PA |
13770 | remote_target::set_trace_notes (const char *user, const char *notes, |
13771 | const char *stop_notes) | |
f196051f SS |
13772 | { |
13773 | struct remote_state *rs = get_remote_state (); | |
13774 | char *reply; | |
8d64371b TT |
13775 | char *buf = rs->buf.data (); |
13776 | char *endbuf = buf + get_remote_packet_size (); | |
f196051f SS |
13777 | int nbytes; |
13778 | ||
13779 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13780 | if (user) | |
13781 | { | |
13782 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13783 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13784 | buf += 2 * nbytes; |
13785 | *buf++ = ';'; | |
13786 | } | |
13787 | if (notes) | |
13788 | { | |
13789 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13790 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13791 | buf += 2 * nbytes; |
13792 | *buf++ = ';'; | |
13793 | } | |
13794 | if (stop_notes) | |
13795 | { | |
13796 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13797 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13798 | buf += 2 * nbytes; |
13799 | *buf++ = ';'; | |
13800 | } | |
13801 | /* Ensure the buffer is terminated. */ | |
13802 | *buf = '\0'; | |
13803 | ||
13804 | putpkt (rs->buf); | |
b6bb3468 | 13805 | reply = remote_get_noisy_reply (); |
f196051f | 13806 | if (*reply == '\0') |
57810aa7 | 13807 | return false; |
f196051f SS |
13808 | |
13809 | if (strcmp (reply, "OK") != 0) | |
13810 | error (_("Bogus reply from target: %s"), reply); | |
13811 | ||
57810aa7 | 13812 | return true; |
f196051f SS |
13813 | } |
13814 | ||
57810aa7 PA |
13815 | bool |
13816 | remote_target::use_agent (bool use) | |
d1feda86 | 13817 | { |
4082afcc | 13818 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13819 | { |
13820 | struct remote_state *rs = get_remote_state (); | |
13821 | ||
13822 | /* If the stub supports QAgent. */ | |
8d64371b | 13823 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 | 13824 | putpkt (rs->buf); |
8d64371b | 13825 | getpkt (&rs->buf, 0); |
d1feda86 | 13826 | |
8d64371b | 13827 | if (strcmp (rs->buf.data (), "OK") == 0) |
d1feda86 | 13828 | { |
f6ac5f3d | 13829 | ::use_agent = use; |
57810aa7 | 13830 | return true; |
d1feda86 YQ |
13831 | } |
13832 | } | |
13833 | ||
57810aa7 | 13834 | return false; |
d1feda86 YQ |
13835 | } |
13836 | ||
57810aa7 | 13837 | bool |
f6ac5f3d | 13838 | remote_target::can_use_agent () |
d1feda86 | 13839 | { |
4082afcc | 13840 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13841 | } |
13842 | ||
9accd112 MM |
13843 | struct btrace_target_info |
13844 | { | |
13845 | /* The ptid of the traced thread. */ | |
13846 | ptid_t ptid; | |
f4abbc16 MM |
13847 | |
13848 | /* The obtained branch trace configuration. */ | |
13849 | struct btrace_config conf; | |
9accd112 MM |
13850 | }; |
13851 | ||
f4abbc16 MM |
13852 | /* Reset our idea of our target's btrace configuration. */ |
13853 | ||
13854 | static void | |
6b8edb51 | 13855 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 13856 | { |
f4abbc16 MM |
13857 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
13858 | } | |
13859 | ||
f4abbc16 MM |
13860 | /* Synchronize the configuration with the target. */ |
13861 | ||
6b8edb51 PA |
13862 | void |
13863 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 13864 | { |
d33501a5 MM |
13865 | struct packet_config *packet; |
13866 | struct remote_state *rs; | |
13867 | char *buf, *pos, *endbuf; | |
13868 | ||
13869 | rs = get_remote_state (); | |
8d64371b | 13870 | buf = rs->buf.data (); |
d33501a5 MM |
13871 | endbuf = buf + get_remote_packet_size (); |
13872 | ||
13873 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13874 | if (packet_config_support (packet) == PACKET_ENABLE | |
13875 | && conf->bts.size != rs->btrace_config.bts.size) | |
13876 | { | |
13877 | pos = buf; | |
13878 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
dda83cd7 | 13879 | conf->bts.size); |
d33501a5 MM |
13880 | |
13881 | putpkt (buf); | |
8d64371b | 13882 | getpkt (&rs->buf, 0); |
d33501a5 MM |
13883 | |
13884 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13885 | { | |
13886 | if (buf[0] == 'E' && buf[1] == '.') | |
13887 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13888 | else | |
13889 | error (_("Failed to configure the BTS buffer size.")); | |
13890 | } | |
13891 | ||
13892 | rs->btrace_config.bts.size = conf->bts.size; | |
13893 | } | |
b20a6524 MM |
13894 | |
13895 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13896 | if (packet_config_support (packet) == PACKET_ENABLE | |
13897 | && conf->pt.size != rs->btrace_config.pt.size) | |
13898 | { | |
13899 | pos = buf; | |
13900 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
dda83cd7 | 13901 | conf->pt.size); |
b20a6524 MM |
13902 | |
13903 | putpkt (buf); | |
8d64371b | 13904 | getpkt (&rs->buf, 0); |
b20a6524 MM |
13905 | |
13906 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13907 | { | |
13908 | if (buf[0] == 'E' && buf[1] == '.') | |
13909 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13910 | else | |
13911 | error (_("Failed to configure the trace buffer size.")); | |
13912 | } | |
13913 | ||
13914 | rs->btrace_config.pt.size = conf->pt.size; | |
13915 | } | |
f4abbc16 MM |
13916 | } |
13917 | ||
13918 | /* Read the current thread's btrace configuration from the target and | |
13919 | store it into CONF. */ | |
13920 | ||
13921 | static void | |
13922 | btrace_read_config (struct btrace_config *conf) | |
13923 | { | |
9018be22 | 13924 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 13925 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE_CONF, ""); |
9018be22 SM |
13926 | if (xml) |
13927 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
13928 | } |
13929 | ||
c0272db5 TW |
13930 | /* Maybe reopen target btrace. */ |
13931 | ||
6b8edb51 PA |
13932 | void |
13933 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
13934 | { |
13935 | struct remote_state *rs = get_remote_state (); | |
c0272db5 | 13936 | int btrace_target_pushed = 0; |
15766370 | 13937 | #if !defined (HAVE_LIBIPT) |
c0272db5 | 13938 | int warned = 0; |
15766370 | 13939 | #endif |
c0272db5 | 13940 | |
aedbe3bb CM |
13941 | /* Don't bother walking the entirety of the remote thread list when |
13942 | we know the feature isn't supported by the remote. */ | |
13943 | if (packet_support (PACKET_qXfer_btrace_conf) != PACKET_ENABLE) | |
13944 | return; | |
13945 | ||
5ed8105e PA |
13946 | scoped_restore_current_thread restore_thread; |
13947 | ||
5b6d1e4f | 13948 | for (thread_info *tp : all_non_exited_threads (this)) |
c0272db5 TW |
13949 | { |
13950 | set_general_thread (tp->ptid); | |
13951 | ||
13952 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13953 | btrace_read_config (&rs->btrace_config); | |
13954 | ||
13955 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13956 | continue; | |
13957 | ||
13958 | #if !defined (HAVE_LIBIPT) | |
13959 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13960 | { | |
13961 | if (!warned) | |
13962 | { | |
13963 | warned = 1; | |
c4e12631 MM |
13964 | warning (_("Target is recording using Intel Processor Trace " |
13965 | "but support was disabled at compile time.")); | |
c0272db5 TW |
13966 | } |
13967 | ||
13968 | continue; | |
13969 | } | |
13970 | #endif /* !defined (HAVE_LIBIPT) */ | |
13971 | ||
13972 | /* Push target, once, but before anything else happens. This way our | |
13973 | changes to the threads will be cleaned up by unpushing the target | |
13974 | in case btrace_read_config () throws. */ | |
13975 | if (!btrace_target_pushed) | |
13976 | { | |
13977 | btrace_target_pushed = 1; | |
13978 | record_btrace_push_target (); | |
13979 | printf_filtered (_("Target is recording using %s.\n"), | |
13980 | btrace_format_string (rs->btrace_config.format)); | |
13981 | } | |
13982 | ||
13983 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13984 | tp->btrace.target->ptid = tp->ptid; | |
13985 | tp->btrace.target->conf = rs->btrace_config; | |
13986 | } | |
c0272db5 TW |
13987 | } |
13988 | ||
9accd112 MM |
13989 | /* Enable branch tracing. */ |
13990 | ||
f6ac5f3d PA |
13991 | struct btrace_target_info * |
13992 | remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf) | |
9accd112 MM |
13993 | { |
13994 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13995 | struct packet_config *packet = NULL; |
9accd112 | 13996 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
13997 | char *buf = rs->buf.data (); |
13998 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 13999 | |
b20a6524 MM |
14000 | switch (conf->format) |
14001 | { | |
14002 | case BTRACE_FORMAT_BTS: | |
14003 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
14004 | break; | |
14005 | ||
14006 | case BTRACE_FORMAT_PT: | |
14007 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
14008 | break; | |
14009 | } | |
14010 | ||
14011 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
14012 | error (_("Target does not support branch tracing.")); |
14013 | ||
f4abbc16 MM |
14014 | btrace_sync_conf (conf); |
14015 | ||
9accd112 MM |
14016 | set_general_thread (ptid); |
14017 | ||
14018 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
14019 | putpkt (rs->buf); | |
8d64371b | 14020 | getpkt (&rs->buf, 0); |
9accd112 MM |
14021 | |
14022 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
14023 | { | |
14024 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14025 | error (_("Could not enable branch tracing for %s: %s"), | |
a068643d | 14026 | target_pid_to_str (ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14027 | else |
14028 | error (_("Could not enable branch tracing for %s."), | |
a068643d | 14029 | target_pid_to_str (ptid).c_str ()); |
9accd112 MM |
14030 | } |
14031 | ||
8d749320 | 14032 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
14033 | tinfo->ptid = ptid; |
14034 | ||
f4abbc16 MM |
14035 | /* If we fail to read the configuration, we lose some information, but the |
14036 | tracing itself is not impacted. */ | |
a70b8144 | 14037 | try |
492d29ea PA |
14038 | { |
14039 | btrace_read_config (&tinfo->conf); | |
14040 | } | |
230d2906 | 14041 | catch (const gdb_exception_error &err) |
492d29ea PA |
14042 | { |
14043 | if (err.message != NULL) | |
3d6e9d23 | 14044 | warning ("%s", err.what ()); |
492d29ea | 14045 | } |
f4abbc16 | 14046 | |
9accd112 MM |
14047 | return tinfo; |
14048 | } | |
14049 | ||
14050 | /* Disable branch tracing. */ | |
14051 | ||
f6ac5f3d PA |
14052 | void |
14053 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14054 | { |
14055 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
14056 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
14057 | char *buf = rs->buf.data (); |
14058 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14059 | |
4082afcc | 14060 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14061 | error (_("Target does not support branch tracing.")); |
14062 | ||
14063 | set_general_thread (tinfo->ptid); | |
14064 | ||
14065 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
14066 | putpkt (rs->buf); | |
8d64371b | 14067 | getpkt (&rs->buf, 0); |
9accd112 MM |
14068 | |
14069 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
14070 | { | |
14071 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14072 | error (_("Could not disable branch tracing for %s: %s"), | |
a068643d | 14073 | target_pid_to_str (tinfo->ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14074 | else |
14075 | error (_("Could not disable branch tracing for %s."), | |
a068643d | 14076 | target_pid_to_str (tinfo->ptid).c_str ()); |
9accd112 MM |
14077 | } |
14078 | ||
14079 | xfree (tinfo); | |
14080 | } | |
14081 | ||
14082 | /* Teardown branch tracing. */ | |
14083 | ||
f6ac5f3d PA |
14084 | void |
14085 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14086 | { |
14087 | /* We must not talk to the target during teardown. */ | |
14088 | xfree (tinfo); | |
14089 | } | |
14090 | ||
14091 | /* Read the branch trace. */ | |
14092 | ||
f6ac5f3d PA |
14093 | enum btrace_error |
14094 | remote_target::read_btrace (struct btrace_data *btrace, | |
14095 | struct btrace_target_info *tinfo, | |
14096 | enum btrace_read_type type) | |
9accd112 MM |
14097 | { |
14098 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 14099 | const char *annex; |
9accd112 | 14100 | |
4082afcc | 14101 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14102 | error (_("Target does not support branch tracing.")); |
14103 | ||
14104 | #if !defined(HAVE_LIBEXPAT) | |
14105 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
14106 | #endif | |
14107 | ||
14108 | switch (type) | |
14109 | { | |
864089d2 | 14110 | case BTRACE_READ_ALL: |
9accd112 MM |
14111 | annex = "all"; |
14112 | break; | |
864089d2 | 14113 | case BTRACE_READ_NEW: |
9accd112 MM |
14114 | annex = "new"; |
14115 | break; | |
969c39fb MM |
14116 | case BTRACE_READ_DELTA: |
14117 | annex = "delta"; | |
14118 | break; | |
9accd112 MM |
14119 | default: |
14120 | internal_error (__FILE__, __LINE__, | |
14121 | _("Bad branch tracing read type: %u."), | |
14122 | (unsigned int) type); | |
14123 | } | |
14124 | ||
9018be22 | 14125 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 14126 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE, annex); |
9018be22 | 14127 | if (!xml) |
969c39fb | 14128 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 14129 | |
9018be22 | 14130 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 14131 | |
969c39fb | 14132 | return BTRACE_ERR_NONE; |
9accd112 MM |
14133 | } |
14134 | ||
f6ac5f3d PA |
14135 | const struct btrace_config * |
14136 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
14137 | { |
14138 | return &tinfo->conf; | |
14139 | } | |
14140 | ||
57810aa7 | 14141 | bool |
f6ac5f3d | 14142 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 14143 | { |
4082afcc PA |
14144 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
14145 | == PACKET_ENABLE); | |
ced63ec0 GB |
14146 | } |
14147 | ||
9dd130a0 TT |
14148 | /* Implementation of to_load. */ |
14149 | ||
f6ac5f3d PA |
14150 | void |
14151 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
14152 | { |
14153 | generic_load (name, from_tty); | |
14154 | } | |
14155 | ||
c78fa86a GB |
14156 | /* Accepts an integer PID; returns a string representing a file that |
14157 | can be opened on the remote side to get the symbols for the child | |
14158 | process. Returns NULL if the operation is not supported. */ | |
14159 | ||
f6ac5f3d PA |
14160 | char * |
14161 | remote_target::pid_to_exec_file (int pid) | |
c78fa86a | 14162 | { |
9018be22 | 14163 | static gdb::optional<gdb::char_vector> filename; |
835205d0 | 14164 | char *annex = NULL; |
c78fa86a GB |
14165 | |
14166 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
14167 | return NULL; | |
14168 | ||
5b6d1e4f | 14169 | inferior *inf = find_inferior_pid (this, pid); |
835205d0 GB |
14170 | if (inf == NULL) |
14171 | internal_error (__FILE__, __LINE__, | |
14172 | _("not currently attached to process %d"), pid); | |
14173 | ||
14174 | if (!inf->fake_pid_p) | |
14175 | { | |
14176 | const int annex_size = 9; | |
14177 | ||
224c3ddb | 14178 | annex = (char *) alloca (annex_size); |
835205d0 GB |
14179 | xsnprintf (annex, annex_size, "%x", pid); |
14180 | } | |
14181 | ||
8b88a78e | 14182 | filename = target_read_stralloc (current_top_target (), |
c78fa86a GB |
14183 | TARGET_OBJECT_EXEC_FILE, annex); |
14184 | ||
9018be22 | 14185 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
14186 | } |
14187 | ||
750ce8d1 YQ |
14188 | /* Implement the to_can_do_single_step target_ops method. */ |
14189 | ||
f6ac5f3d PA |
14190 | int |
14191 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
14192 | { |
14193 | /* We can only tell whether target supports single step or not by | |
14194 | supported s and S vCont actions if the stub supports vContSupported | |
14195 | feature. If the stub doesn't support vContSupported feature, | |
14196 | we have conservatively to think target doesn't supports single | |
14197 | step. */ | |
14198 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
14199 | { | |
14200 | struct remote_state *rs = get_remote_state (); | |
14201 | ||
14202 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
6b8edb51 | 14203 | remote_vcont_probe (); |
750ce8d1 YQ |
14204 | |
14205 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
14206 | } | |
14207 | else | |
14208 | return 0; | |
14209 | } | |
14210 | ||
3a00c802 PA |
14211 | /* Implementation of the to_execution_direction method for the remote |
14212 | target. */ | |
14213 | ||
f6ac5f3d PA |
14214 | enum exec_direction_kind |
14215 | remote_target::execution_direction () | |
3a00c802 PA |
14216 | { |
14217 | struct remote_state *rs = get_remote_state (); | |
14218 | ||
14219 | return rs->last_resume_exec_dir; | |
14220 | } | |
14221 | ||
f6327dcb KB |
14222 | /* Return pointer to the thread_info struct which corresponds to |
14223 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
14224 | ||
f6ac5f3d PA |
14225 | thread_info * |
14226 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
14227 | int handle_len, | |
14228 | inferior *inf) | |
f6327dcb | 14229 | { |
5b6d1e4f | 14230 | for (thread_info *tp : all_non_exited_threads (this)) |
f6327dcb | 14231 | { |
7aabaf9d | 14232 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
14233 | |
14234 | if (tp->inf == inf && priv != NULL) | |
dda83cd7 | 14235 | { |
7aabaf9d | 14236 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 14237 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
dda83cd7 | 14238 | handle_len, priv->thread_handle.size ()); |
7aabaf9d | 14239 | if (memcmp (thread_handle, priv->thread_handle.data (), |
dda83cd7 | 14240 | handle_len) == 0) |
f6327dcb KB |
14241 | return tp; |
14242 | } | |
14243 | } | |
14244 | ||
14245 | return NULL; | |
14246 | } | |
14247 | ||
3d6c6204 KB |
14248 | gdb::byte_vector |
14249 | remote_target::thread_info_to_thread_handle (struct thread_info *tp) | |
14250 | { | |
14251 | remote_thread_info *priv = get_remote_thread_info (tp); | |
14252 | return priv->thread_handle; | |
14253 | } | |
14254 | ||
57810aa7 | 14255 | bool |
f6ac5f3d | 14256 | remote_target::can_async_p () |
6426a772 | 14257 | { |
5d93a237 TT |
14258 | struct remote_state *rs = get_remote_state (); |
14259 | ||
3015c064 SM |
14260 | /* We don't go async if the user has explicitly prevented it with the |
14261 | "maint set target-async" command. */ | |
c6ebd6cf | 14262 | if (!target_async_permitted) |
57810aa7 | 14263 | return false; |
75c99385 | 14264 | |
23860348 | 14265 | /* We're async whenever the serial device is. */ |
5d93a237 | 14266 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
14267 | } |
14268 | ||
57810aa7 | 14269 | bool |
f6ac5f3d | 14270 | remote_target::is_async_p () |
6426a772 | 14271 | { |
5d93a237 TT |
14272 | struct remote_state *rs = get_remote_state (); |
14273 | ||
c6ebd6cf | 14274 | if (!target_async_permitted) |
75c99385 | 14275 | /* We only enable async when the user specifically asks for it. */ |
57810aa7 | 14276 | return false; |
75c99385 | 14277 | |
23860348 | 14278 | /* We're async whenever the serial device is. */ |
5d93a237 | 14279 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
14280 | } |
14281 | ||
2acceee2 JM |
14282 | /* Pass the SERIAL event on and up to the client. One day this code |
14283 | will be able to delay notifying the client of an event until the | |
23860348 | 14284 | point where an entire packet has been received. */ |
2acceee2 | 14285 | |
2acceee2 JM |
14286 | static serial_event_ftype remote_async_serial_handler; |
14287 | ||
6426a772 | 14288 | static void |
819cc324 | 14289 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14290 | { |
2acceee2 JM |
14291 | /* Don't propogate error information up to the client. Instead let |
14292 | the client find out about the error by querying the target. */ | |
b1a35af2 | 14293 | inferior_event_handler (INF_REG_EVENT); |
2acceee2 JM |
14294 | } |
14295 | ||
74531fed PA |
14296 | static void |
14297 | remote_async_inferior_event_handler (gdb_client_data data) | |
14298 | { | |
6b36ddeb | 14299 | inferior_event_handler (INF_REG_EVENT); |
74531fed PA |
14300 | } |
14301 | ||
5b6d1e4f PA |
14302 | int |
14303 | remote_target::async_wait_fd () | |
14304 | { | |
14305 | struct remote_state *rs = get_remote_state (); | |
14306 | return rs->remote_desc->fd; | |
14307 | } | |
14308 | ||
f6ac5f3d PA |
14309 | void |
14310 | remote_target::async (int enable) | |
2acceee2 | 14311 | { |
5d93a237 TT |
14312 | struct remote_state *rs = get_remote_state (); |
14313 | ||
6a3753b3 | 14314 | if (enable) |
2acceee2 | 14315 | { |
88b496c3 | 14316 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14317 | |
14318 | /* If there are pending events in the stop reply queue tell the | |
14319 | event loop to process them. */ | |
953edf2b | 14320 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 14321 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14322 | /* For simplicity, below we clear the pending events token |
14323 | without remembering whether it is marked, so here we always | |
14324 | mark it. If there's actually no pending notification to | |
14325 | process, this ends up being a no-op (other than a spurious | |
14326 | event-loop wakeup). */ | |
14327 | if (target_is_non_stop_p ()) | |
14328 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14329 | } |
14330 | else | |
b7d2e916 PA |
14331 | { |
14332 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14333 | /* If the core is disabling async, it doesn't want to be |
14334 | disturbed with target events. Clear all async event sources | |
14335 | too. */ | |
6b8edb51 | 14336 | clear_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14337 | if (target_is_non_stop_p ()) |
14338 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14339 | } |
6426a772 JM |
14340 | } |
14341 | ||
65706a29 PA |
14342 | /* Implementation of the to_thread_events method. */ |
14343 | ||
f6ac5f3d PA |
14344 | void |
14345 | remote_target::thread_events (int enable) | |
65706a29 PA |
14346 | { |
14347 | struct remote_state *rs = get_remote_state (); | |
14348 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
14349 | |
14350 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
14351 | return; | |
14352 | ||
8d64371b | 14353 | xsnprintf (rs->buf.data (), size, "QThreadEvents:%x", enable ? 1 : 0); |
65706a29 | 14354 | putpkt (rs->buf); |
8d64371b | 14355 | getpkt (&rs->buf, 0); |
65706a29 PA |
14356 | |
14357 | switch (packet_ok (rs->buf, | |
14358 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
14359 | { | |
14360 | case PACKET_OK: | |
8d64371b TT |
14361 | if (strcmp (rs->buf.data (), "OK") != 0) |
14362 | error (_("Remote refused setting thread events: %s"), rs->buf.data ()); | |
65706a29 PA |
14363 | break; |
14364 | case PACKET_ERROR: | |
8d64371b | 14365 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
65706a29 PA |
14366 | break; |
14367 | case PACKET_UNKNOWN: | |
14368 | break; | |
14369 | } | |
14370 | } | |
14371 | ||
d471ea57 | 14372 | static void |
981a3fb3 | 14373 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14374 | { |
37a105a1 | 14375 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14376 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14377 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14378 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14379 | |
2e783024 | 14380 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14381 | for (; list != NULL; list = list->next) |
14382 | if (strcmp (list->name, "Z-packet") == 0) | |
14383 | continue; | |
427c3a89 DJ |
14384 | else if (list->type == not_set_cmd) |
14385 | /* Alias commands are exactly like the original, except they | |
14386 | don't have the normal type. */ | |
14387 | continue; | |
14388 | else | |
37a105a1 | 14389 | { |
2e783024 | 14390 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14391 | |
112e8700 SM |
14392 | uiout->field_string ("name", list->name); |
14393 | uiout->text (": "); | |
427c3a89 | 14394 | if (list->type == show_cmd) |
f5c4fcd9 | 14395 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14396 | else |
14397 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 14398 | } |
d471ea57 | 14399 | } |
5a2468f5 | 14400 | |
0f71a2f6 | 14401 | |
23860348 | 14402 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
14403 | static void |
14404 | remote_new_objfile (struct objfile *objfile) | |
14405 | { | |
6b8edb51 | 14406 | remote_target *remote = get_current_remote_target (); |
5d93a237 | 14407 | |
6b8edb51 PA |
14408 | if (remote != NULL) /* Have a remote connection. */ |
14409 | remote->remote_check_symbols (); | |
dc8acb97 MS |
14410 | } |
14411 | ||
00bf0b85 SS |
14412 | /* Pull all the tracepoints defined on the target and create local |
14413 | data structures representing them. We don't want to create real | |
14414 | tracepoints yet, we don't want to mess up the user's existing | |
14415 | collection. */ | |
14416 | ||
f6ac5f3d PA |
14417 | int |
14418 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14419 | { |
00bf0b85 SS |
14420 | struct remote_state *rs = get_remote_state (); |
14421 | char *p; | |
d5551862 | 14422 | |
00bf0b85 SS |
14423 | /* Ask for a first packet of tracepoint definition. */ |
14424 | putpkt ("qTfP"); | |
8d64371b TT |
14425 | getpkt (&rs->buf, 0); |
14426 | p = rs->buf.data (); | |
00bf0b85 | 14427 | while (*p && *p != 'l') |
d5551862 | 14428 | { |
00bf0b85 SS |
14429 | parse_tracepoint_definition (p, utpp); |
14430 | /* Ask for another packet of tracepoint definition. */ | |
14431 | putpkt ("qTsP"); | |
8d64371b TT |
14432 | getpkt (&rs->buf, 0); |
14433 | p = rs->buf.data (); | |
d5551862 | 14434 | } |
00bf0b85 | 14435 | return 0; |
d5551862 SS |
14436 | } |
14437 | ||
f6ac5f3d PA |
14438 | int |
14439 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14440 | { |
00bf0b85 | 14441 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14442 | char *p; |
d5551862 | 14443 | |
00bf0b85 SS |
14444 | /* Ask for a first packet of variable definition. */ |
14445 | putpkt ("qTfV"); | |
8d64371b TT |
14446 | getpkt (&rs->buf, 0); |
14447 | p = rs->buf.data (); | |
00bf0b85 | 14448 | while (*p && *p != 'l') |
d5551862 | 14449 | { |
00bf0b85 SS |
14450 | parse_tsv_definition (p, utsvp); |
14451 | /* Ask for another packet of variable definition. */ | |
14452 | putpkt ("qTsV"); | |
8d64371b TT |
14453 | getpkt (&rs->buf, 0); |
14454 | p = rs->buf.data (); | |
d5551862 | 14455 | } |
00bf0b85 | 14456 | return 0; |
d5551862 SS |
14457 | } |
14458 | ||
c1e36e3e PA |
14459 | /* The "set/show range-stepping" show hook. */ |
14460 | ||
14461 | static void | |
14462 | show_range_stepping (struct ui_file *file, int from_tty, | |
14463 | struct cmd_list_element *c, | |
14464 | const char *value) | |
14465 | { | |
14466 | fprintf_filtered (file, | |
14467 | _("Debugger's willingness to use range stepping " | |
14468 | "is %s.\n"), value); | |
14469 | } | |
14470 | ||
6b8edb51 PA |
14471 | /* Return true if the vCont;r action is supported by the remote |
14472 | stub. */ | |
14473 | ||
14474 | bool | |
14475 | remote_target::vcont_r_supported () | |
14476 | { | |
14477 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
14478 | remote_vcont_probe (); | |
14479 | ||
14480 | return (packet_support (PACKET_vCont) == PACKET_ENABLE | |
14481 | && get_remote_state ()->supports_vCont.r); | |
14482 | } | |
14483 | ||
c1e36e3e PA |
14484 | /* The "set/show range-stepping" set hook. */ |
14485 | ||
14486 | static void | |
eb4c3f4a | 14487 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14488 | struct cmd_list_element *c) |
14489 | { | |
6b8edb51 PA |
14490 | /* When enabling, check whether range stepping is actually supported |
14491 | by the target, and warn if not. */ | |
c1e36e3e PA |
14492 | if (use_range_stepping) |
14493 | { | |
6b8edb51 PA |
14494 | remote_target *remote = get_current_remote_target (); |
14495 | if (remote == NULL | |
14496 | || !remote->vcont_r_supported ()) | |
14497 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
14498 | } |
14499 | } | |
14500 | ||
baf2b57f SM |
14501 | static void |
14502 | show_remote_debug (struct ui_file *file, int from_tty, | |
14503 | struct cmd_list_element *c, const char *value) | |
14504 | { | |
14505 | fprintf_filtered (file, _("Debugging of remote protocol is %s.\n"), | |
14506 | value); | |
14507 | } | |
14508 | ||
14509 | static void | |
14510 | show_remote_timeout (struct ui_file *file, int from_tty, | |
14511 | struct cmd_list_element *c, const char *value) | |
14512 | { | |
14513 | fprintf_filtered (file, | |
14514 | _("Timeout limit to wait for target to respond is %s.\n"), | |
14515 | value); | |
14516 | } | |
14517 | ||
dbe692af LM |
14518 | /* Implement the "supports_memory_tagging" target_ops method. */ |
14519 | ||
14520 | bool | |
14521 | remote_target::supports_memory_tagging () | |
14522 | { | |
2c2e7f87 LM |
14523 | return remote_memory_tagging_p (); |
14524 | } | |
14525 | ||
14526 | /* Create the qMemTags packet given ADDRESS, LEN and TYPE. */ | |
14527 | ||
14528 | static void | |
14529 | create_fetch_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
14530 | size_t len, int type) | |
14531 | { | |
14532 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
14533 | ||
14534 | std::string request = string_printf ("qMemTags:%s,%s:%s", | |
14535 | phex_nz (address, addr_size), | |
14536 | phex_nz (len, sizeof (len)), | |
14537 | phex_nz (type, sizeof (type))); | |
14538 | ||
14539 | strcpy (packet.data (), request.c_str ()); | |
14540 | } | |
14541 | ||
14542 | /* Parse the qMemTags packet reply into TAGS. | |
14543 | ||
14544 | Return true if successful, false otherwise. */ | |
14545 | ||
14546 | static bool | |
14547 | parse_fetch_memtags_reply (const gdb::char_vector &reply, | |
14548 | gdb::byte_vector &tags) | |
14549 | { | |
14550 | if (reply.empty () || reply[0] == 'E' || reply[0] != 'm') | |
14551 | return false; | |
14552 | ||
14553 | /* Copy the tag data. */ | |
14554 | tags = hex2bin (reply.data () + 1); | |
14555 | ||
14556 | return true; | |
14557 | } | |
14558 | ||
14559 | /* Create the QMemTags packet given ADDRESS, LEN, TYPE and TAGS. */ | |
14560 | ||
14561 | static void | |
14562 | create_store_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
14563 | size_t len, int type, | |
14564 | const gdb::byte_vector &tags) | |
14565 | { | |
14566 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
14567 | ||
14568 | /* Put together the main packet, address and length. */ | |
14569 | std::string request = string_printf ("QMemTags:%s,%s:%s:", | |
14570 | phex_nz (address, addr_size), | |
14571 | phex_nz (len, sizeof (len)), | |
14572 | phex_nz (type, sizeof (type))); | |
14573 | request += bin2hex (tags.data (), tags.size ()); | |
14574 | ||
14575 | /* Check if we have exceeded the maximum packet size. */ | |
14576 | if (packet.size () < request.length ()) | |
14577 | error (_("Contents too big for packet QMemTags.")); | |
14578 | ||
14579 | strcpy (packet.data (), request.c_str ()); | |
dbe692af LM |
14580 | } |
14581 | ||
14582 | /* Implement the "fetch_memtags" target_ops method. */ | |
14583 | ||
14584 | bool | |
14585 | remote_target::fetch_memtags (CORE_ADDR address, size_t len, | |
14586 | gdb::byte_vector &tags, int type) | |
14587 | { | |
2c2e7f87 LM |
14588 | /* Make sure the qMemTags packet is supported. */ |
14589 | if (!remote_memory_tagging_p ()) | |
14590 | gdb_assert_not_reached ("remote fetch_memtags called with packet disabled"); | |
14591 | ||
14592 | struct remote_state *rs = get_remote_state (); | |
14593 | ||
14594 | create_fetch_memtags_request (rs->buf, address, len, type); | |
14595 | ||
14596 | putpkt (rs->buf); | |
14597 | getpkt (&rs->buf, 0); | |
14598 | ||
14599 | return parse_fetch_memtags_reply (rs->buf, tags); | |
dbe692af LM |
14600 | } |
14601 | ||
14602 | /* Implement the "store_memtags" target_ops method. */ | |
14603 | ||
14604 | bool | |
14605 | remote_target::store_memtags (CORE_ADDR address, size_t len, | |
14606 | const gdb::byte_vector &tags, int type) | |
14607 | { | |
2c2e7f87 LM |
14608 | /* Make sure the QMemTags packet is supported. */ |
14609 | if (!remote_memory_tagging_p ()) | |
14610 | gdb_assert_not_reached ("remote store_memtags called with packet disabled"); | |
14611 | ||
14612 | struct remote_state *rs = get_remote_state (); | |
14613 | ||
14614 | create_store_memtags_request (rs->buf, address, len, type, tags); | |
14615 | ||
14616 | putpkt (rs->buf); | |
14617 | getpkt (&rs->buf, 0); | |
14618 | ||
14619 | /* Verify if the request was successful. */ | |
14620 | return packet_check_result (rs->buf.data ()) == PACKET_OK; | |
dbe692af LM |
14621 | } |
14622 | ||
6c265988 | 14623 | void _initialize_remote (); |
c906108c | 14624 | void |
6c265988 | 14625 | _initialize_remote () |
c906108c | 14626 | { |
9a7071a8 | 14627 | struct cmd_list_element *cmd; |
6f937416 | 14628 | const char *cmd_name; |
ea9c271d | 14629 | |
0f71a2f6 | 14630 | /* architecture specific data */ |
29709017 DJ |
14631 | remote_g_packet_data_handle = |
14632 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14633 | |
d9f719f1 PA |
14634 | add_target (remote_target_info, remote_target::open); |
14635 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 14636 | |
dc8acb97 | 14637 | /* Hook into new objfile notification. */ |
76727919 | 14638 | gdb::observers::new_objfile.attach (remote_new_objfile); |
dc8acb97 | 14639 | |
c906108c SS |
14640 | #if 0 |
14641 | init_remote_threadtests (); | |
14642 | #endif | |
14643 | ||
23860348 | 14644 | /* set/show remote ... */ |
d471ea57 | 14645 | |
0743fc83 | 14646 | add_basic_prefix_cmd ("remote", class_maintenance, _("\ |
590042fc | 14647 | Remote protocol specific variables.\n\ |
5a2468f5 | 14648 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14649 | the packets being used."), |
0743fc83 TT |
14650 | &remote_set_cmdlist, "set remote ", |
14651 | 0 /* allow-unknown */, &setlist); | |
1bedd215 | 14652 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
590042fc | 14653 | Remote protocol specific variables.\n\ |
5a2468f5 | 14654 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14655 | the packets being used."), |
cff3e48b | 14656 | &remote_show_cmdlist, "show remote ", |
23860348 | 14657 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14658 | |
1a966eab AC |
14659 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14660 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14661 | Argument is a single section name (default: all loaded sections).\n\ |
14662 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14663 | &cmdlist); |
14664 | ||
1a966eab AC |
14665 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14666 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14667 | maintenance packet TEXT\n\ |
14668 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14669 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14670 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14671 | terminating `#' character and checksum."), |
c906108c SS |
14672 | &maintenancelist); |
14673 | ||
7915a72c AC |
14674 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
14675 | Set whether to send break if interrupted."), _("\ | |
14676 | Show whether to send break if interrupted."), _("\ | |
14677 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 14678 | set_remotebreak, show_remotebreak, |
e707bbc2 | 14679 | &setlist, &showlist); |
9a7071a8 | 14680 | cmd_name = "remotebreak"; |
cf00cd6f | 14681 | cmd = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
9a7071a8 JB |
14682 | deprecate_cmd (cmd, "set remote interrupt-sequence"); |
14683 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
cf00cd6f | 14684 | cmd = lookup_cmd (&cmd_name, showlist, "", NULL, -1, 1); |
9a7071a8 JB |
14685 | deprecate_cmd (cmd, "show remote interrupt-sequence"); |
14686 | ||
14687 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14688 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14689 | _("\ | |
9a7071a8 JB |
14690 | Set interrupt sequence to remote target."), _("\ |
14691 | Show interrupt sequence to remote target."), _("\ | |
14692 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14693 | NULL, show_interrupt_sequence, | |
14694 | &remote_set_cmdlist, | |
14695 | &remote_show_cmdlist); | |
14696 | ||
14697 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14698 | &interrupt_on_connect, _("\ | |
590042fc PW |
14699 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ |
14700 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ | |
9a7071a8 JB |
14701 | If set, interrupt sequence is sent to remote target."), |
14702 | NULL, NULL, | |
14703 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14704 | |
23860348 | 14705 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14706 | |
1a966eab AC |
14707 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14708 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14709 | &setlist); |
1a966eab AC |
14710 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14711 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14712 | &showlist); |
14713 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14714 | set_memory_write_packet_size, _("\ |
14715 | Set the maximum number of bytes per memory-write packet.\n\ | |
14716 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14717 | default packet size. The actual limit is further reduced\n\ | |
14718 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14719 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14720 | &remote_set_cmdlist); |
14721 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14722 | set_memory_read_packet_size, _("\ |
14723 | Set the maximum number of bytes per memory-read packet.\n\ | |
14724 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14725 | default packet size. The actual limit is further reduced\n\ | |
14726 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14727 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14728 | &remote_set_cmdlist); |
14729 | add_cmd ("memory-write-packet-size", no_class, | |
14730 | show_memory_write_packet_size, | |
1a966eab | 14731 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14732 | &remote_show_cmdlist); |
14733 | add_cmd ("memory-read-packet-size", no_class, | |
14734 | show_memory_read_packet_size, | |
1a966eab | 14735 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14736 | &remote_show_cmdlist); |
c906108c | 14737 | |
055303e2 | 14738 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14739 | &remote_hw_watchpoint_limit, _("\ |
14740 | Set the maximum number of target hardware watchpoints."), _("\ | |
14741 | Show the maximum number of target hardware watchpoints."), _("\ | |
055303e2 AB |
14742 | Specify \"unlimited\" for unlimited hardware watchpoints."), |
14743 | NULL, show_hardware_watchpoint_limit, | |
14744 | &remote_set_cmdlist, | |
14745 | &remote_show_cmdlist); | |
14746 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-length-limit", | |
14747 | no_class, | |
480a3f21 PW |
14748 | &remote_hw_watchpoint_length_limit, _("\ |
14749 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14750 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
055303e2 AB |
14751 | Specify \"unlimited\" to allow watchpoints of unlimited size."), |
14752 | NULL, show_hardware_watchpoint_length_limit, | |
480a3f21 | 14753 | &remote_set_cmdlist, &remote_show_cmdlist); |
055303e2 | 14754 | add_setshow_zuinteger_unlimited_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14755 | &remote_hw_breakpoint_limit, _("\ |
14756 | Set the maximum number of target hardware breakpoints."), _("\ | |
14757 | Show the maximum number of target hardware breakpoints."), _("\ | |
055303e2 AB |
14758 | Specify \"unlimited\" for unlimited hardware breakpoints."), |
14759 | NULL, show_hardware_breakpoint_limit, | |
b3f42336 | 14760 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14761 | |
1b493192 PA |
14762 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14763 | &remote_address_size, _("\ | |
4d28ad1e AC |
14764 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14765 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14766 | NULL, |
14767 | NULL, /* FIXME: i18n: */ | |
14768 | &setlist, &showlist); | |
c906108c | 14769 | |
ca4f7f8b PA |
14770 | init_all_packet_configs (); |
14771 | ||
444abaca | 14772 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14773 | "X", "binary-download", 1); |
0f71a2f6 | 14774 | |
444abaca | 14775 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14776 | "vCont", "verbose-resume", 0); |
506fb367 | 14777 | |
89be2091 DJ |
14778 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14779 | "QPassSignals", "pass-signals", 0); | |
14780 | ||
82075af2 JS |
14781 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14782 | "QCatchSyscalls", "catch-syscalls", 0); | |
14783 | ||
9b224c5e PA |
14784 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14785 | "QProgramSignals", "program-signals", 0); | |
14786 | ||
bc3b087d SDJ |
14787 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
14788 | "QSetWorkingDir", "set-working-dir", 0); | |
14789 | ||
aefd8b33 SDJ |
14790 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14791 | "QStartupWithShell", "startup-with-shell", 0); | |
14792 | ||
0a2dde4a SDJ |
14793 | add_packet_config_cmd (&remote_protocol_packets |
14794 | [PACKET_QEnvironmentHexEncoded], | |
14795 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14796 | 0); | |
14797 | ||
14798 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14799 | "QEnvironmentReset", "environment-reset", | |
14800 | 0); | |
14801 | ||
14802 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14803 | "QEnvironmentUnset", "environment-unset", | |
14804 | 0); | |
14805 | ||
444abaca | 14806 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14807 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14808 | |
444abaca | 14809 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14810 | "P", "set-register", 1); |
d471ea57 | 14811 | |
444abaca | 14812 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14813 | "p", "fetch-register", 1); |
b96ec7ac | 14814 | |
444abaca | 14815 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14816 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14817 | |
444abaca | 14818 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14819 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14820 | |
444abaca | 14821 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14822 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14823 | |
444abaca | 14824 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14825 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14826 | |
444abaca | 14827 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14828 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14829 | |
0876f84a DJ |
14830 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14831 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14832 | |
c78fa86a GB |
14833 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14834 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14835 | ||
23181151 DJ |
14836 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14837 | "qXfer:features:read", "target-features", 0); | |
14838 | ||
cfa9d6d9 DJ |
14839 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14840 | "qXfer:libraries:read", "library-info", 0); | |
14841 | ||
2268b414 JK |
14842 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14843 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14844 | ||
fd79ecee DJ |
14845 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14846 | "qXfer:memory-map:read", "memory-map", 0); | |
14847 | ||
07e059b5 | 14848 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
dda83cd7 | 14849 | "qXfer:osdata:read", "osdata", 0); |
07e059b5 | 14850 | |
dc146f7c VP |
14851 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14852 | "qXfer:threads:read", "threads", 0); | |
14853 | ||
4aa995e1 | 14854 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
dda83cd7 | 14855 | "qXfer:siginfo:read", "read-siginfo-object", 0); |
4aa995e1 PA |
14856 | |
14857 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
dda83cd7 | 14858 | "qXfer:siginfo:write", "write-siginfo-object", 0); |
4aa995e1 | 14859 | |
b3b9301e PA |
14860 | add_packet_config_cmd |
14861 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14862 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14863 | |
169081d0 TG |
14864 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14865 | "qXfer:uib:read", "unwind-info-block", 0); | |
14866 | ||
444abaca | 14867 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14868 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14869 | 0); |
14870 | ||
711e434b PM |
14871 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14872 | "qGetTIBAddr", "get-thread-information-block-address", | |
14873 | 0); | |
14874 | ||
40ab02ce MS |
14875 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14876 | "bc", "reverse-continue", 0); | |
14877 | ||
14878 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14879 | "bs", "reverse-step", 0); | |
14880 | ||
be2a5f71 DJ |
14881 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14882 | "qSupported", "supported-packets", 0); | |
14883 | ||
08388c79 DE |
14884 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14885 | "qSearch:memory", "search-memory", 0); | |
14886 | ||
bd3eecc3 PA |
14887 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14888 | "qTStatus", "trace-status", 0); | |
14889 | ||
15a201c8 GB |
14890 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14891 | "vFile:setfs", "hostio-setfs", 0); | |
14892 | ||
a6b151f1 DJ |
14893 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14894 | "vFile:open", "hostio-open", 0); | |
14895 | ||
14896 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14897 | "vFile:pread", "hostio-pread", 0); | |
14898 | ||
14899 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14900 | "vFile:pwrite", "hostio-pwrite", 0); | |
14901 | ||
14902 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14903 | "vFile:close", "hostio-close", 0); | |
14904 | ||
14905 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14906 | "vFile:unlink", "hostio-unlink", 0); | |
14907 | ||
b9e7b9c3 UW |
14908 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14909 | "vFile:readlink", "hostio-readlink", 0); | |
14910 | ||
0a93529c GB |
14911 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14912 | "vFile:fstat", "hostio-fstat", 0); | |
14913 | ||
2d717e4f DJ |
14914 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14915 | "vAttach", "attach", 0); | |
14916 | ||
14917 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14918 | "vRun", "run", 0); | |
14919 | ||
a6f3e723 SL |
14920 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14921 | "QStartNoAckMode", "noack", 0); | |
14922 | ||
82f73884 PA |
14923 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14924 | "vKill", "kill", 0); | |
14925 | ||
0b16c5cf PA |
14926 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14927 | "qAttached", "query-attached", 0); | |
14928 | ||
782b2b07 | 14929 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14930 | "ConditionalTracepoints", |
14931 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14932 | |
14933 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14934 | "ConditionalBreakpoints", | |
14935 | "conditional-breakpoints", 0); | |
14936 | ||
d3ce09f5 SS |
14937 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14938 | "BreakpointCommands", | |
14939 | "breakpoint-commands", 0); | |
14940 | ||
7a697b8d SS |
14941 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14942 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14943 | |
409873ef SS |
14944 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14945 | "TracepointSource", "TracepointSource", 0); | |
14946 | ||
d914c394 SS |
14947 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14948 | "QAllow", "allow", 0); | |
14949 | ||
0fb4aa4b PA |
14950 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14951 | "StaticTracepoints", "static-tracepoints", 0); | |
14952 | ||
1e4d1764 YQ |
14953 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14954 | "InstallInTrace", "install-in-trace", 0); | |
14955 | ||
0fb4aa4b | 14956 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
dda83cd7 | 14957 | "qXfer:statictrace:read", "read-sdata-object", 0); |
0fb4aa4b | 14958 | |
78d85199 YQ |
14959 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14960 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14961 | ||
03583c20 UW |
14962 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14963 | "QDisableRandomization", "disable-randomization", 0); | |
14964 | ||
d1feda86 YQ |
14965 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14966 | "QAgent", "agent", 0); | |
14967 | ||
f6f899bf HAQ |
14968 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14969 | "QTBuffer:size", "trace-buffer-size", 0); | |
14970 | ||
9accd112 MM |
14971 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14972 | "Qbtrace:off", "disable-btrace", 0); | |
14973 | ||
14974 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14975 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14976 | ||
14977 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14978 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14979 | |
14980 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14981 | "qXfer:btrace", "read-btrace", 0); | |
14982 | ||
f4abbc16 MM |
14983 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14984 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14985 | ||
d33501a5 MM |
14986 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14987 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14988 | ||
73b8c1fd PA |
14989 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14990 | "multiprocess-feature", "multiprocess-feature", 0); | |
14991 | ||
f7e6eed5 | 14992 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
dda83cd7 | 14993 | "swbreak-feature", "swbreak-feature", 0); |
f7e6eed5 PA |
14994 | |
14995 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
dda83cd7 | 14996 | "hwbreak-feature", "hwbreak-feature", 0); |
f7e6eed5 | 14997 | |
89245bc0 DB |
14998 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14999 | "fork-event-feature", "fork-event-feature", 0); | |
15000 | ||
15001 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
15002 | "vfork-event-feature", "vfork-event-feature", 0); | |
15003 | ||
b20a6524 MM |
15004 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
15005 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
15006 | ||
750ce8d1 YQ |
15007 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
15008 | "vContSupported", "verbose-resume-supported", 0); | |
15009 | ||
94585166 DB |
15010 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
15011 | "exec-event-feature", "exec-event-feature", 0); | |
15012 | ||
de979965 PA |
15013 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
15014 | "vCtrlC", "ctrl-c", 0); | |
15015 | ||
65706a29 PA |
15016 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
15017 | "QThreadEvents", "thread-events", 0); | |
15018 | ||
f2faf941 PA |
15019 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
15020 | "N stop reply", "no-resumed-stop-reply", 0); | |
15021 | ||
2c2e7f87 LM |
15022 | add_packet_config_cmd (&remote_protocol_packets[PACKET_memory_tagging_feature], |
15023 | "memory-tagging-feature", "memory-tagging-feature", 0); | |
15024 | ||
0b736949 DB |
15025 | /* Assert that we've registered "set remote foo-packet" commands |
15026 | for all packet configs. */ | |
ca4f7f8b PA |
15027 | { |
15028 | int i; | |
15029 | ||
15030 | for (i = 0; i < PACKET_MAX; i++) | |
15031 | { | |
15032 | /* Ideally all configs would have a command associated. Some | |
15033 | still don't though. */ | |
15034 | int excepted; | |
15035 | ||
15036 | switch (i) | |
15037 | { | |
15038 | case PACKET_QNonStop: | |
ca4f7f8b PA |
15039 | case PACKET_EnableDisableTracepoints_feature: |
15040 | case PACKET_tracenz_feature: | |
15041 | case PACKET_DisconnectedTracing_feature: | |
15042 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
15043 | case PACKET_qCRC: |
15044 | /* Additions to this list need to be well justified: | |
15045 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
15046 | excepted = 1; |
15047 | break; | |
15048 | default: | |
15049 | excepted = 0; | |
15050 | break; | |
15051 | } | |
15052 | ||
15053 | /* This catches both forgetting to add a config command, and | |
15054 | forgetting to remove a packet from the exception list. */ | |
15055 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
15056 | } | |
15057 | } | |
15058 | ||
37a105a1 DJ |
15059 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
15060 | Z sub-packet has its own set and show commands, but users may | |
15061 | have sets to this variable in their .gdbinit files (or in their | |
15062 | documentation). */ | |
e9e68a56 | 15063 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c | 15064 | &remote_Z_packet_detect, _("\ |
590042fc PW |
15065 | Set use of remote protocol `Z' packets."), _("\ |
15066 | Show use of remote protocol `Z' packets."), _("\ | |
3b64bf98 | 15067 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 15068 | packets."), |
e9e68a56 | 15069 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
15070 | show_remote_protocol_Z_packet_cmd, |
15071 | /* FIXME: i18n: Use of remote protocol | |
15072 | `Z' packets is %s. */ | |
e9e68a56 | 15073 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 15074 | |
0743fc83 | 15075 | add_basic_prefix_cmd ("remote", class_files, _("\ |
590042fc | 15076 | Manipulate files on the remote system.\n\ |
a6b151f1 | 15077 | Transfer files to and from the remote target system."), |
0743fc83 TT |
15078 | &remote_cmdlist, "remote ", |
15079 | 0 /* allow-unknown */, &cmdlist); | |
a6b151f1 DJ |
15080 | |
15081 | add_cmd ("put", class_files, remote_put_command, | |
15082 | _("Copy a local file to the remote system."), | |
15083 | &remote_cmdlist); | |
15084 | ||
15085 | add_cmd ("get", class_files, remote_get_command, | |
15086 | _("Copy a remote file to the local system."), | |
15087 | &remote_cmdlist); | |
15088 | ||
15089 | add_cmd ("delete", class_files, remote_delete_command, | |
15090 | _("Delete a remote file."), | |
15091 | &remote_cmdlist); | |
15092 | ||
2d717e4f | 15093 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 15094 | &remote_exec_file_var, _("\ |
590042fc PW |
15095 | Set the remote pathname for \"run\"."), _("\ |
15096 | Show the remote pathname for \"run\"."), NULL, | |
94585166 DB |
15097 | set_remote_exec_file, |
15098 | show_remote_exec_file, | |
15099 | &remote_set_cmdlist, | |
15100 | &remote_show_cmdlist); | |
2d717e4f | 15101 | |
c1e36e3e PA |
15102 | add_setshow_boolean_cmd ("range-stepping", class_run, |
15103 | &use_range_stepping, _("\ | |
15104 | Enable or disable range stepping."), _("\ | |
15105 | Show whether target-assisted range stepping is enabled."), _("\ | |
15106 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
15107 | tells the target to step the corresponding range of addresses itself instead\n\ | |
15108 | of issuing multiple single-steps. This speeds up source level\n\ | |
15109 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
15110 | stepping is supported by the target. The default is on."), | |
15111 | set_range_stepping, | |
15112 | show_range_stepping, | |
15113 | &setlist, | |
15114 | &showlist); | |
15115 | ||
ed2b7c17 TT |
15116 | add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\ |
15117 | Set watchdog timer."), _("\ | |
15118 | Show watchdog timer."), _("\ | |
15119 | When non-zero, this timeout is used instead of waiting forever for a target\n\ | |
15120 | to finish a low-level step or continue operation. If the specified amount\n\ | |
15121 | of time passes without a response from the target, an error occurs."), | |
15122 | NULL, | |
15123 | show_watchdog, | |
15124 | &setlist, &showlist); | |
15125 | ||
6cc8564b LM |
15126 | add_setshow_zuinteger_unlimited_cmd ("remote-packet-max-chars", no_class, |
15127 | &remote_packet_max_chars, _("\ | |
15128 | Set the maximum number of characters to display for each remote packet."), _("\ | |
15129 | Show the maximum number of characters to display for each remote packet."), _("\ | |
15130 | Specify \"unlimited\" to display all the characters."), | |
15131 | NULL, show_remote_packet_max_chars, | |
15132 | &setdebuglist, &showdebuglist); | |
15133 | ||
02349803 SM |
15134 | add_setshow_boolean_cmd ("remote", no_class, &remote_debug, |
15135 | _("Set debugging of remote protocol."), | |
15136 | _("Show debugging of remote protocol."), | |
15137 | _("\ | |
baf2b57f SM |
15138 | When enabled, each packet sent or received with the remote target\n\ |
15139 | is displayed."), | |
02349803 SM |
15140 | NULL, |
15141 | show_remote_debug, | |
15142 | &setdebuglist, &showdebuglist); | |
baf2b57f SM |
15143 | |
15144 | add_setshow_zuinteger_unlimited_cmd ("remotetimeout", no_class, | |
15145 | &remote_timeout, _("\ | |
15146 | Set timeout limit to wait for target to respond."), _("\ | |
15147 | Show timeout limit to wait for target to respond."), _("\ | |
15148 | This value is used to set the time limit for gdb to wait for a response\n\ | |
15149 | from the target."), | |
15150 | NULL, | |
15151 | show_remote_timeout, | |
15152 | &setlist, &showlist); | |
15153 | ||
449092f6 | 15154 | /* Eventually initialize fileio. See fileio.c */ |
3f4d92eb | 15155 | initialize_remote_fileio (&remote_set_cmdlist, &remote_show_cmdlist); |
c906108c | 15156 | } |