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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
3666a048 | 3 | Copyright (C) 1988-2021 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
3b3dac9b | 30 | #include "process-stratum-target.h" |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
76727919 | 39 | #include "observable.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
268a13a5 TT |
45 | #include "gdbsupport/filestuff.h" |
46 | #include "gdbsupport/rsp-low.h" | |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
268a13a5 | 50 | #include "gdbsupport/gdb_sys_time.h" |
c906108c | 51 | |
400b5eca | 52 | #include "gdbsupport/event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
7e10abd1 | 59 | #include "gdbcore.h" |
6240bebf | 60 | |
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
268a13a5 | 71 | #include "gdbsupport/agent.h" |
9accd112 | 72 | #include "btrace.h" |
c0272db5 | 73 | #include "record-btrace.h" |
325fac50 | 74 | #include <algorithm> |
268a13a5 TT |
75 | #include "gdbsupport/scoped_restore.h" |
76 | #include "gdbsupport/environ.h" | |
77 | #include "gdbsupport/byte-vector.h" | |
4a72de73 | 78 | #include "gdbsupport/search.h" |
39ef2f62 | 79 | #include <algorithm> |
9d6eea31 | 80 | #include <unordered_map> |
93b54c8e | 81 | #include "async-event.h" |
754487e2 | 82 | #include "gdbsupport/selftest.h" |
35b1e5cc | 83 | |
f6ac5f3d PA |
84 | /* The remote target. */ |
85 | ||
d9f719f1 PA |
86 | static const char remote_doc[] = N_("\ |
87 | Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
88 | Specify the serial device it is connected to\n\ | |
89 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
90 | ||
cda09ec9 SM |
91 | /* See remote.h */ |
92 | ||
02349803 | 93 | bool remote_debug = false; |
cda09ec9 | 94 | |
6b8edb51 PA |
95 | #define OPAQUETHREADBYTES 8 |
96 | ||
97 | /* a 64 bit opaque identifier */ | |
98 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
99 | ||
100 | struct gdb_ext_thread_info; | |
101 | struct threads_listing_context; | |
102 | typedef int (*rmt_thread_action) (threadref *ref, void *context); | |
103 | struct protocol_feature; | |
104 | struct packet_reg; | |
105 | ||
106 | struct stop_reply; | |
32603266 | 107 | typedef std::unique_ptr<stop_reply> stop_reply_up; |
6b8edb51 PA |
108 | |
109 | /* Generic configuration support for packets the stub optionally | |
110 | supports. Allows the user to specify the use of the packet as well | |
111 | as allowing GDB to auto-detect support in the remote stub. */ | |
112 | ||
113 | enum packet_support | |
114 | { | |
115 | PACKET_SUPPORT_UNKNOWN = 0, | |
116 | PACKET_ENABLE, | |
117 | PACKET_DISABLE | |
118 | }; | |
119 | ||
120 | /* Analyze a packet's return value and update the packet config | |
121 | accordingly. */ | |
122 | ||
123 | enum packet_result | |
124 | { | |
125 | PACKET_ERROR, | |
126 | PACKET_OK, | |
127 | PACKET_UNKNOWN | |
128 | }; | |
129 | ||
130 | struct threads_listing_context; | |
3c69da40 PA |
131 | |
132 | /* Stub vCont actions support. | |
133 | ||
134 | Each field is a boolean flag indicating whether the stub reports | |
135 | support for the corresponding action. */ | |
136 | ||
137 | struct vCont_action_support | |
138 | { | |
139 | /* vCont;t */ | |
140 | bool t = false; | |
141 | ||
142 | /* vCont;r */ | |
143 | bool r = false; | |
144 | ||
145 | /* vCont;s */ | |
146 | bool s = false; | |
147 | ||
148 | /* vCont;S */ | |
149 | bool S = false; | |
150 | }; | |
151 | ||
405feb71 | 152 | /* About this many threadids fit in a packet. */ |
3c69da40 PA |
153 | |
154 | #define MAXTHREADLISTRESULTS 32 | |
155 | ||
156 | /* Data for the vFile:pread readahead cache. */ | |
157 | ||
158 | struct readahead_cache | |
159 | { | |
160 | /* Invalidate the readahead cache. */ | |
161 | void invalidate (); | |
162 | ||
163 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
164 | void invalidate_fd (int fd); | |
165 | ||
166 | /* Serve pread from the readahead cache. Returns number of bytes | |
167 | read, or 0 if the request can't be served from the cache. */ | |
168 | int pread (int fd, gdb_byte *read_buf, size_t len, ULONGEST offset); | |
169 | ||
170 | /* The file descriptor for the file that is being cached. -1 if the | |
171 | cache is invalid. */ | |
172 | int fd = -1; | |
173 | ||
174 | /* The offset into the file that the cache buffer corresponds | |
175 | to. */ | |
176 | ULONGEST offset = 0; | |
177 | ||
178 | /* The buffer holding the cache contents. */ | |
179 | gdb_byte *buf = nullptr; | |
180 | /* The buffer's size. We try to read as much as fits into a packet | |
181 | at a time. */ | |
182 | size_t bufsize = 0; | |
183 | ||
184 | /* Cache hit and miss counters. */ | |
185 | ULONGEST hit_count = 0; | |
186 | ULONGEST miss_count = 0; | |
187 | }; | |
188 | ||
189 | /* Description of the remote protocol for a given architecture. */ | |
190 | ||
191 | struct packet_reg | |
192 | { | |
193 | long offset; /* Offset into G packet. */ | |
194 | long regnum; /* GDB's internal register number. */ | |
195 | LONGEST pnum; /* Remote protocol register number. */ | |
196 | int in_g_packet; /* Always part of G packet. */ | |
197 | /* long size in bytes; == register_size (target_gdbarch (), regnum); | |
198 | at present. */ | |
199 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); | |
200 | at present. */ | |
201 | }; | |
202 | ||
203 | struct remote_arch_state | |
204 | { | |
205 | explicit remote_arch_state (struct gdbarch *gdbarch); | |
206 | ||
207 | /* Description of the remote protocol registers. */ | |
208 | long sizeof_g_packet; | |
209 | ||
210 | /* Description of the remote protocol registers indexed by REGNUM | |
211 | (making an array gdbarch_num_regs in size). */ | |
212 | std::unique_ptr<packet_reg[]> regs; | |
213 | ||
214 | /* This is the size (in chars) of the first response to the ``g'' | |
215 | packet. It is used as a heuristic when determining the maximum | |
216 | size of memory-read and memory-write packets. A target will | |
217 | typically only reserve a buffer large enough to hold the ``g'' | |
218 | packet. The size does not include packet overhead (headers and | |
219 | trailers). */ | |
220 | long actual_register_packet_size; | |
221 | ||
222 | /* This is the maximum size (in chars) of a non read/write packet. | |
223 | It is also used as a cap on the size of read/write packets. */ | |
224 | long remote_packet_size; | |
225 | }; | |
226 | ||
227 | /* Description of the remote protocol state for the currently | |
228 | connected target. This is per-target state, and independent of the | |
229 | selected architecture. */ | |
230 | ||
231 | class remote_state | |
232 | { | |
233 | public: | |
234 | ||
235 | remote_state (); | |
236 | ~remote_state (); | |
237 | ||
238 | /* Get the remote arch state for GDBARCH. */ | |
239 | struct remote_arch_state *get_remote_arch_state (struct gdbarch *gdbarch); | |
240 | ||
241 | public: /* data */ | |
242 | ||
243 | /* A buffer to use for incoming packets, and its current size. The | |
244 | buffer is grown dynamically for larger incoming packets. | |
245 | Outgoing packets may also be constructed in this buffer. | |
8d64371b | 246 | The size of the buffer is always at least REMOTE_PACKET_SIZE; |
3c69da40 PA |
247 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing |
248 | packets. */ | |
8d64371b | 249 | gdb::char_vector buf; |
3c69da40 PA |
250 | |
251 | /* True if we're going through initial connection setup (finding out | |
252 | about the remote side's threads, relocating symbols, etc.). */ | |
253 | bool starting_up = false; | |
254 | ||
255 | /* If we negotiated packet size explicitly (and thus can bypass | |
256 | heuristics for the largest packet size that will not overflow | |
257 | a buffer in the stub), this will be set to that packet size. | |
258 | Otherwise zero, meaning to use the guessed size. */ | |
259 | long explicit_packet_size = 0; | |
260 | ||
261 | /* remote_wait is normally called when the target is running and | |
262 | waits for a stop reply packet. But sometimes we need to call it | |
263 | when the target is already stopped. We can send a "?" packet | |
264 | and have remote_wait read the response. Or, if we already have | |
265 | the response, we can stash it in BUF and tell remote_wait to | |
266 | skip calling getpkt. This flag is set when BUF contains a | |
267 | stop reply packet and the target is not waiting. */ | |
268 | int cached_wait_status = 0; | |
269 | ||
270 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
271 | expect acks from each other. The connection is assumed to be | |
272 | reliable. */ | |
273 | bool noack_mode = false; | |
274 | ||
275 | /* True if we're connected in extended remote mode. */ | |
276 | bool extended = false; | |
277 | ||
278 | /* True if we resumed the target and we're waiting for the target to | |
279 | stop. In the mean time, we can't start another command/query. | |
280 | The remote server wouldn't be ready to process it, so we'd | |
281 | timeout waiting for a reply that would never come and eventually | |
282 | we'd close the connection. This can happen in asynchronous mode | |
283 | because we allow GDB commands while the target is running. */ | |
284 | bool waiting_for_stop_reply = false; | |
285 | ||
286 | /* The status of the stub support for the various vCont actions. */ | |
287 | vCont_action_support supports_vCont; | |
5b6d1e4f PA |
288 | /* Whether vCont support was probed already. This is a workaround |
289 | until packet_support is per-connection. */ | |
290 | bool supports_vCont_probed; | |
3c69da40 PA |
291 | |
292 | /* True if the user has pressed Ctrl-C, but the target hasn't | |
293 | responded to that. */ | |
294 | bool ctrlc_pending_p = false; | |
295 | ||
296 | /* True if we saw a Ctrl-C while reading or writing from/to the | |
297 | remote descriptor. At that point it is not safe to send a remote | |
298 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
299 | process it once we're done with sending/receiving the current | |
300 | packet, which should be shortly. If however that takes too long, | |
301 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
302 | bool got_ctrlc_during_io = false; | |
303 | ||
304 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
305 | remote_open knows that we don't have a file open when the program | |
306 | starts. */ | |
307 | struct serial *remote_desc = nullptr; | |
308 | ||
309 | /* These are the threads which we last sent to the remote system. The | |
310 | TID member will be -1 for all or -2 for not sent yet. */ | |
311 | ptid_t general_thread = null_ptid; | |
312 | ptid_t continue_thread = null_ptid; | |
313 | ||
314 | /* This is the traceframe which we last selected on the remote system. | |
315 | It will be -1 if no traceframe is selected. */ | |
316 | int remote_traceframe_number = -1; | |
317 | ||
318 | char *last_pass_packet = nullptr; | |
319 | ||
320 | /* The last QProgramSignals packet sent to the target. We bypass | |
321 | sending a new program signals list down to the target if the new | |
322 | packet is exactly the same as the last we sent. IOW, we only let | |
323 | the target know about program signals list changes. */ | |
324 | char *last_program_signals_packet = nullptr; | |
325 | ||
326 | gdb_signal last_sent_signal = GDB_SIGNAL_0; | |
327 | ||
328 | bool last_sent_step = false; | |
329 | ||
330 | /* The execution direction of the last resume we got. */ | |
331 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; | |
332 | ||
333 | char *finished_object = nullptr; | |
334 | char *finished_annex = nullptr; | |
335 | ULONGEST finished_offset = 0; | |
336 | ||
337 | /* Should we try the 'ThreadInfo' query packet? | |
338 | ||
339 | This variable (NOT available to the user: auto-detect only!) | |
340 | determines whether GDB will use the new, simpler "ThreadInfo" | |
341 | query or the older, more complex syntax for thread queries. | |
342 | This is an auto-detect variable (set to true at each connect, | |
343 | and set to false when the target fails to recognize it). */ | |
344 | bool use_threadinfo_query = false; | |
345 | bool use_threadextra_query = false; | |
346 | ||
347 | threadref echo_nextthread {}; | |
348 | threadref nextthread {}; | |
349 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
350 | ||
351 | /* The state of remote notification. */ | |
352 | struct remote_notif_state *notif_state = nullptr; | |
353 | ||
354 | /* The branch trace configuration. */ | |
355 | struct btrace_config btrace_config {}; | |
356 | ||
357 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
358 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
359 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
360 | has yet been sent. */ | |
361 | int fs_pid = -1; | |
362 | ||
363 | /* A readahead cache for vFile:pread. Often, reading a binary | |
364 | involves a sequence of small reads. E.g., when parsing an ELF | |
365 | file. A readahead cache helps mostly the case of remote | |
366 | debugging on a connection with higher latency, due to the | |
367 | request/reply nature of the RSP. We only cache data for a single | |
368 | file descriptor at a time. */ | |
369 | struct readahead_cache readahead_cache; | |
370 | ||
371 | /* The list of already fetched and acknowledged stop events. This | |
372 | queue is used for notification Stop, and other notifications | |
373 | don't need queue for their events, because the notification | |
374 | events of Stop can't be consumed immediately, so that events | |
375 | should be queued first, and be consumed by remote_wait_{ns,as} | |
376 | one per time. Other notifications can consume their events | |
377 | immediately, so queue is not needed for them. */ | |
953edf2b | 378 | std::vector<stop_reply_up> stop_reply_queue; |
3c69da40 PA |
379 | |
380 | /* Asynchronous signal handle registered as event loop source for | |
381 | when we have pending events ready to be passed to the core. */ | |
382 | struct async_event_handler *remote_async_inferior_event_token = nullptr; | |
383 | ||
384 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with | |
385 | ``forever'' still use the normal timeout mechanism. This is | |
386 | currently used by the ASYNC code to guarentee that target reads | |
387 | during the initial connect always time-out. Once getpkt has been | |
388 | modified to return a timeout indication and, in turn | |
389 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
390 | this can go away. */ | |
391 | int wait_forever_enabled_p = 1; | |
392 | ||
393 | private: | |
394 | /* Mapping of remote protocol data for each gdbarch. Usually there | |
395 | is only one entry here, though we may see more with stubs that | |
396 | support multi-process. */ | |
397 | std::unordered_map<struct gdbarch *, remote_arch_state> | |
398 | m_arch_states; | |
399 | }; | |
6b8edb51 | 400 | |
d9f719f1 PA |
401 | static const target_info remote_target_info = { |
402 | "remote", | |
403 | N_("Remote serial target in gdb-specific protocol"), | |
404 | remote_doc | |
405 | }; | |
406 | ||
3b3dac9b | 407 | class remote_target : public process_stratum_target |
f6ac5f3d PA |
408 | { |
409 | public: | |
3b3dac9b | 410 | remote_target () = default; |
6b8edb51 | 411 | ~remote_target () override; |
f6ac5f3d | 412 | |
d9f719f1 PA |
413 | const target_info &info () const override |
414 | { return remote_target_info; } | |
f6ac5f3d | 415 | |
121b3efd PA |
416 | const char *connection_string () override; |
417 | ||
f6ac5f3d PA |
418 | thread_control_capabilities get_thread_control_capabilities () override |
419 | { return tc_schedlock; } | |
420 | ||
d9f719f1 PA |
421 | /* Open a remote connection. */ |
422 | static void open (const char *, int); | |
423 | ||
f6ac5f3d PA |
424 | void close () override; |
425 | ||
426 | void detach (inferior *, int) override; | |
427 | void disconnect (const char *, int) override; | |
428 | ||
1192f124 | 429 | void commit_resumed () override; |
f6ac5f3d | 430 | void resume (ptid_t, int, enum gdb_signal) override; |
b60cea74 | 431 | ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override; |
b4b1a226 | 432 | bool has_pending_events () override; |
f6ac5f3d PA |
433 | |
434 | void fetch_registers (struct regcache *, int) override; | |
435 | void store_registers (struct regcache *, int) override; | |
436 | void prepare_to_store (struct regcache *) override; | |
437 | ||
438 | void files_info () override; | |
439 | ||
440 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
441 | ||
442 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
443 | enum remove_bp_reason) override; | |
444 | ||
445 | ||
57810aa7 PA |
446 | bool stopped_by_sw_breakpoint () override; |
447 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 448 | |
57810aa7 | 449 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 450 | |
57810aa7 | 451 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 452 | |
57810aa7 | 453 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 454 | |
57810aa7 | 455 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 456 | |
57810aa7 | 457 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
458 | |
459 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
460 | ||
461 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
462 | ||
463 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
464 | ||
465 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
466 | ||
467 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
468 | struct expression *) override; | |
469 | ||
470 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
471 | struct expression *) override; | |
472 | ||
473 | void kill () override; | |
474 | ||
475 | void load (const char *, int) override; | |
476 | ||
477 | void mourn_inferior () override; | |
478 | ||
adc6a863 | 479 | void pass_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d PA |
480 | |
481 | int set_syscall_catchpoint (int, bool, int, | |
482 | gdb::array_view<const int>) override; | |
483 | ||
adc6a863 | 484 | void program_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d | 485 | |
57810aa7 | 486 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
487 | |
488 | const char *thread_name (struct thread_info *) override; | |
489 | ||
490 | void update_thread_list () override; | |
491 | ||
a068643d | 492 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
493 | |
494 | const char *extra_thread_info (struct thread_info *) override; | |
495 | ||
c80e29db | 496 | ptid_t get_ada_task_ptid (long lwp, ULONGEST thread) override; |
f6ac5f3d PA |
497 | |
498 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
499 | int handle_len, | |
500 | inferior *inf) override; | |
501 | ||
3d6c6204 KB |
502 | gdb::byte_vector thread_info_to_thread_handle (struct thread_info *tp) |
503 | override; | |
504 | ||
f6ac5f3d PA |
505 | void stop (ptid_t) override; |
506 | ||
507 | void interrupt () override; | |
508 | ||
509 | void pass_ctrlc () override; | |
510 | ||
511 | enum target_xfer_status xfer_partial (enum target_object object, | |
512 | const char *annex, | |
513 | gdb_byte *readbuf, | |
514 | const gdb_byte *writebuf, | |
515 | ULONGEST offset, ULONGEST len, | |
516 | ULONGEST *xfered_len) override; | |
517 | ||
518 | ULONGEST get_memory_xfer_limit () override; | |
519 | ||
520 | void rcmd (const char *command, struct ui_file *output) override; | |
521 | ||
522 | char *pid_to_exec_file (int pid) override; | |
523 | ||
524 | void log_command (const char *cmd) override | |
525 | { | |
526 | serial_log_command (this, cmd); | |
527 | } | |
528 | ||
529 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
530 | CORE_ADDR load_module_addr, | |
531 | CORE_ADDR offset) override; | |
532 | ||
57810aa7 | 533 | bool can_execute_reverse () override; |
f6ac5f3d PA |
534 | |
535 | std::vector<mem_region> memory_map () override; | |
536 | ||
537 | void flash_erase (ULONGEST address, LONGEST length) override; | |
538 | ||
539 | void flash_done () override; | |
540 | ||
541 | const struct target_desc *read_description () override; | |
542 | ||
543 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
544 | const gdb_byte *pattern, ULONGEST pattern_len, | |
545 | CORE_ADDR *found_addrp) override; | |
546 | ||
57810aa7 | 547 | bool can_async_p () override; |
f6ac5f3d | 548 | |
57810aa7 | 549 | bool is_async_p () override; |
f6ac5f3d PA |
550 | |
551 | void async (int) override; | |
552 | ||
5b6d1e4f PA |
553 | int async_wait_fd () override; |
554 | ||
f6ac5f3d PA |
555 | void thread_events (int) override; |
556 | ||
557 | int can_do_single_step () override; | |
558 | ||
559 | void terminal_inferior () override; | |
560 | ||
561 | void terminal_ours () override; | |
562 | ||
57810aa7 | 563 | bool supports_non_stop () override; |
f6ac5f3d | 564 | |
57810aa7 | 565 | bool supports_multi_process () override; |
f6ac5f3d | 566 | |
57810aa7 | 567 | bool supports_disable_randomization () override; |
f6ac5f3d | 568 | |
57810aa7 | 569 | bool filesystem_is_local () override; |
f6ac5f3d PA |
570 | |
571 | ||
572 | int fileio_open (struct inferior *inf, const char *filename, | |
573 | int flags, int mode, int warn_if_slow, | |
574 | int *target_errno) override; | |
575 | ||
576 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
577 | ULONGEST offset, int *target_errno) override; | |
578 | ||
579 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
580 | ULONGEST offset, int *target_errno) override; | |
581 | ||
582 | int fileio_fstat (int fd, struct stat *sb, int *target_errno) override; | |
583 | ||
584 | int fileio_close (int fd, int *target_errno) override; | |
585 | ||
586 | int fileio_unlink (struct inferior *inf, | |
587 | const char *filename, | |
588 | int *target_errno) override; | |
589 | ||
590 | gdb::optional<std::string> | |
591 | fileio_readlink (struct inferior *inf, | |
592 | const char *filename, | |
593 | int *target_errno) override; | |
594 | ||
57810aa7 | 595 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 596 | |
57810aa7 | 597 | bool supports_string_tracing () override; |
f6ac5f3d | 598 | |
57810aa7 | 599 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 600 | |
57810aa7 | 601 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
602 | |
603 | void trace_init () override; | |
604 | ||
605 | void download_tracepoint (struct bp_location *location) override; | |
606 | ||
57810aa7 | 607 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
608 | |
609 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
610 | ||
611 | void enable_tracepoint (struct bp_location *location) override; | |
612 | ||
613 | void disable_tracepoint (struct bp_location *location) override; | |
614 | ||
615 | void trace_set_readonly_regions () override; | |
616 | ||
617 | void trace_start () override; | |
618 | ||
619 | int get_trace_status (struct trace_status *ts) override; | |
620 | ||
621 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
622 | override; | |
623 | ||
624 | void trace_stop () override; | |
625 | ||
626 | int trace_find (enum trace_find_type type, int num, | |
627 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
628 | ||
57810aa7 | 629 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
630 | |
631 | int save_trace_data (const char *filename) override; | |
632 | ||
633 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
634 | ||
635 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
636 | ||
637 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
638 | ||
639 | int get_min_fast_tracepoint_insn_len () override; | |
640 | ||
641 | void set_disconnected_tracing (int val) override; | |
642 | ||
643 | void set_circular_trace_buffer (int val) override; | |
644 | ||
645 | void set_trace_buffer_size (LONGEST val) override; | |
646 | ||
57810aa7 PA |
647 | bool set_trace_notes (const char *user, const char *notes, |
648 | const char *stopnotes) override; | |
f6ac5f3d PA |
649 | |
650 | int core_of_thread (ptid_t ptid) override; | |
651 | ||
652 | int verify_memory (const gdb_byte *data, | |
653 | CORE_ADDR memaddr, ULONGEST size) override; | |
654 | ||
655 | ||
57810aa7 | 656 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
657 | |
658 | void set_permissions () override; | |
659 | ||
660 | bool static_tracepoint_marker_at (CORE_ADDR, | |
661 | struct static_tracepoint_marker *marker) | |
662 | override; | |
663 | ||
664 | std::vector<static_tracepoint_marker> | |
665 | static_tracepoint_markers_by_strid (const char *id) override; | |
666 | ||
667 | traceframe_info_up traceframe_info () override; | |
668 | ||
57810aa7 PA |
669 | bool use_agent (bool use) override; |
670 | bool can_use_agent () override; | |
f6ac5f3d PA |
671 | |
672 | struct btrace_target_info *enable_btrace (ptid_t ptid, | |
673 | const struct btrace_config *conf) override; | |
674 | ||
675 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
676 | ||
677 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
678 | ||
679 | enum btrace_error read_btrace (struct btrace_data *data, | |
680 | struct btrace_target_info *btinfo, | |
681 | enum btrace_read_type type) override; | |
682 | ||
683 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 684 | bool augmented_libraries_svr4_read () override; |
82d1f134 | 685 | void follow_fork (inferior *, ptid_t, target_waitkind, bool, bool) override; |
294c36eb | 686 | void follow_exec (inferior *, ptid_t, const char *) override; |
f6ac5f3d PA |
687 | int insert_fork_catchpoint (int) override; |
688 | int remove_fork_catchpoint (int) override; | |
689 | int insert_vfork_catchpoint (int) override; | |
690 | int remove_vfork_catchpoint (int) override; | |
691 | int insert_exec_catchpoint (int) override; | |
692 | int remove_exec_catchpoint (int) override; | |
693 | enum exec_direction_kind execution_direction () override; | |
694 | ||
dbe692af LM |
695 | bool supports_memory_tagging () override; |
696 | ||
697 | bool fetch_memtags (CORE_ADDR address, size_t len, | |
698 | gdb::byte_vector &tags, int type) override; | |
699 | ||
700 | bool store_memtags (CORE_ADDR address, size_t len, | |
701 | const gdb::byte_vector &tags, int type) override; | |
702 | ||
6b8edb51 PA |
703 | public: /* Remote specific methods. */ |
704 | ||
705 | void remote_download_command_source (int num, ULONGEST addr, | |
706 | struct command_line *cmds); | |
707 | ||
708 | void remote_file_put (const char *local_file, const char *remote_file, | |
709 | int from_tty); | |
710 | void remote_file_get (const char *remote_file, const char *local_file, | |
711 | int from_tty); | |
712 | void remote_file_delete (const char *remote_file, int from_tty); | |
713 | ||
714 | int remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
715 | ULONGEST offset, int *remote_errno); | |
716 | int remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
717 | ULONGEST offset, int *remote_errno); | |
718 | int remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
719 | ULONGEST offset, int *remote_errno); | |
720 | ||
721 | int remote_hostio_send_command (int command_bytes, int which_packet, | |
aa2838cc | 722 | int *remote_errno, const char **attachment, |
6b8edb51 PA |
723 | int *attachment_len); |
724 | int remote_hostio_set_filesystem (struct inferior *inf, | |
725 | int *remote_errno); | |
726 | /* We should get rid of this and use fileio_open directly. */ | |
727 | int remote_hostio_open (struct inferior *inf, const char *filename, | |
728 | int flags, int mode, int warn_if_slow, | |
729 | int *remote_errno); | |
730 | int remote_hostio_close (int fd, int *remote_errno); | |
731 | ||
732 | int remote_hostio_unlink (inferior *inf, const char *filename, | |
733 | int *remote_errno); | |
734 | ||
735 | struct remote_state *get_remote_state (); | |
736 | ||
737 | long get_remote_packet_size (void); | |
738 | long get_memory_packet_size (struct memory_packet_config *config); | |
739 | ||
740 | long get_memory_write_packet_size (); | |
741 | long get_memory_read_packet_size (); | |
742 | ||
743 | char *append_pending_thread_resumptions (char *p, char *endp, | |
744 | ptid_t ptid); | |
d9f719f1 | 745 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d | 746 | void start_remote (int from_tty, int extended_p); |
00431a78 | 747 | void remote_detach_1 (struct inferior *inf, int from_tty); |
6b8edb51 PA |
748 | |
749 | char *append_resumption (char *p, char *endp, | |
750 | ptid_t ptid, int step, gdb_signal siggnal); | |
751 | int remote_resume_with_vcont (ptid_t ptid, int step, | |
752 | gdb_signal siggnal); | |
753 | ||
64d38fdd | 754 | thread_info *add_current_inferior_and_thread (const char *wait_status); |
6b8edb51 PA |
755 | |
756 | ptid_t wait_ns (ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 757 | target_wait_flags options); |
6b8edb51 | 758 | ptid_t wait_as (ptid_t ptid, target_waitstatus *status, |
b60cea74 | 759 | target_wait_flags options); |
6b8edb51 PA |
760 | |
761 | ptid_t process_stop_reply (struct stop_reply *stop_reply, | |
762 | target_waitstatus *status); | |
763 | ||
8f66807b | 764 | ptid_t select_thread_for_ambiguous_stop_reply |
c272a98c | 765 | (const struct target_waitstatus &status); |
8f66807b | 766 | |
8a82de58 | 767 | void remote_notice_new_inferior (ptid_t currthread, bool executing); |
6b8edb51 | 768 | |
1edb66d8 | 769 | void print_one_stopped_thread (thread_info *thread); |
6b8edb51 PA |
770 | void process_initial_stop_replies (int from_tty); |
771 | ||
00431a78 | 772 | thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing); |
6b8edb51 PA |
773 | |
774 | void btrace_sync_conf (const btrace_config *conf); | |
775 | ||
776 | void remote_btrace_maybe_reopen (); | |
777 | ||
778 | void remove_new_fork_children (threads_listing_context *context); | |
28561a65 | 779 | void kill_new_fork_children (inferior *inf); |
6b8edb51 PA |
780 | void discard_pending_stop_replies (struct inferior *inf); |
781 | int stop_reply_queue_length (); | |
782 | ||
783 | void check_pending_events_prevent_wildcard_vcont | |
2f63ec5c | 784 | (bool *may_global_wildcard_vcont); |
6b8edb51 PA |
785 | |
786 | void discard_pending_stop_replies_in_queue (); | |
787 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
788 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
789 | int peek_stop_reply (ptid_t ptid); | |
bb277751 | 790 | void remote_parse_stop_reply (const char *buf, stop_reply *event); |
6b8edb51 PA |
791 | |
792 | void remote_stop_ns (ptid_t ptid); | |
793 | void remote_interrupt_as (); | |
794 | void remote_interrupt_ns (); | |
795 | ||
796 | char *remote_get_noisy_reply (); | |
797 | int remote_query_attached (int pid); | |
9ab8741a | 798 | inferior *remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 PA |
799 | int try_open_exec); |
800 | ||
801 | ptid_t remote_current_thread (ptid_t oldpid); | |
e3b2741b | 802 | ptid_t get_current_thread (const char *wait_status); |
6b8edb51 PA |
803 | |
804 | void set_thread (ptid_t ptid, int gen); | |
805 | void set_general_thread (ptid_t ptid); | |
806 | void set_continue_thread (ptid_t ptid); | |
807 | void set_general_process (); | |
808 | ||
809 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
810 | ||
cecb1912 | 811 | int remote_unpack_thread_info_response (const char *pkt, threadref *expectedref, |
6b8edb51 PA |
812 | gdb_ext_thread_info *info); |
813 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
814 | gdb_ext_thread_info *info); | |
815 | ||
cecb1912 | 816 | int parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
817 | threadref *original_echo, |
818 | threadref *resultlist, | |
819 | int *doneflag); | |
820 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
821 | int result_limit, int *done, int *result_count, | |
822 | threadref *threadlist); | |
823 | ||
824 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
825 | void *context, int looplimit); | |
826 | ||
827 | int remote_get_threads_with_ql (threads_listing_context *context); | |
828 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
829 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
830 | ||
831 | void extended_remote_restart (); | |
832 | ||
833 | void get_offsets (); | |
834 | ||
835 | void remote_check_symbols (); | |
836 | ||
837 | void remote_supported_packet (const struct protocol_feature *feature, | |
838 | enum packet_support support, | |
839 | const char *argument); | |
840 | ||
841 | void remote_query_supported (); | |
842 | ||
843 | void remote_packet_size (const protocol_feature *feature, | |
844 | packet_support support, const char *value); | |
845 | ||
846 | void remote_serial_quit_handler (); | |
847 | ||
848 | void remote_detach_pid (int pid); | |
849 | ||
850 | void remote_vcont_probe (); | |
851 | ||
852 | void remote_resume_with_hc (ptid_t ptid, int step, | |
853 | gdb_signal siggnal); | |
854 | ||
855 | void send_interrupt_sequence (); | |
856 | void interrupt_query (); | |
857 | ||
858 | void remote_notif_get_pending_events (notif_client *nc); | |
859 | ||
860 | int fetch_register_using_p (struct regcache *regcache, | |
861 | packet_reg *reg); | |
862 | int send_g_packet (); | |
863 | void process_g_packet (struct regcache *regcache); | |
864 | void fetch_registers_using_g (struct regcache *regcache); | |
865 | int store_register_using_P (const struct regcache *regcache, | |
866 | packet_reg *reg); | |
867 | void store_registers_using_G (const struct regcache *regcache); | |
868 | ||
869 | void set_remote_traceframe (); | |
870 | ||
871 | void check_binary_download (CORE_ADDR addr); | |
872 | ||
873 | target_xfer_status remote_write_bytes_aux (const char *header, | |
874 | CORE_ADDR memaddr, | |
875 | const gdb_byte *myaddr, | |
876 | ULONGEST len_units, | |
877 | int unit_size, | |
878 | ULONGEST *xfered_len_units, | |
879 | char packet_format, | |
880 | int use_length); | |
881 | ||
882 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
883 | const gdb_byte *myaddr, ULONGEST len, | |
884 | int unit_size, ULONGEST *xfered_len); | |
885 | ||
886 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
887 | ULONGEST len_units, | |
888 | int unit_size, ULONGEST *xfered_len_units); | |
889 | ||
890 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
891 | ULONGEST memaddr, | |
892 | ULONGEST len, | |
893 | int unit_size, | |
894 | ULONGEST *xfered_len); | |
895 | ||
896 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
897 | gdb_byte *myaddr, ULONGEST len, | |
898 | int unit_size, | |
899 | ULONGEST *xfered_len); | |
900 | ||
901 | packet_result remote_send_printf (const char *format, ...) | |
902 | ATTRIBUTE_PRINTF (2, 3); | |
903 | ||
904 | target_xfer_status remote_flash_write (ULONGEST address, | |
905 | ULONGEST length, ULONGEST *xfered_len, | |
906 | const gdb_byte *data); | |
907 | ||
908 | int readchar (int timeout); | |
909 | ||
910 | void remote_serial_write (const char *str, int len); | |
911 | ||
912 | int putpkt (const char *buf); | |
913 | int putpkt_binary (const char *buf, int cnt); | |
914 | ||
8d64371b TT |
915 | int putpkt (const gdb::char_vector &buf) |
916 | { | |
917 | return putpkt (buf.data ()); | |
918 | } | |
919 | ||
6b8edb51 | 920 | void skip_frame (); |
8d64371b TT |
921 | long read_frame (gdb::char_vector *buf_p); |
922 | void getpkt (gdb::char_vector *buf, int forever); | |
923 | int getpkt_or_notif_sane_1 (gdb::char_vector *buf, int forever, | |
6b8edb51 | 924 | int expecting_notif, int *is_notif); |
8d64371b TT |
925 | int getpkt_sane (gdb::char_vector *buf, int forever); |
926 | int getpkt_or_notif_sane (gdb::char_vector *buf, int forever, | |
6b8edb51 PA |
927 | int *is_notif); |
928 | int remote_vkill (int pid); | |
929 | void remote_kill_k (); | |
930 | ||
931 | void extended_remote_disable_randomization (int val); | |
932 | int extended_remote_run (const std::string &args); | |
933 | ||
934 | void send_environment_packet (const char *action, | |
935 | const char *packet, | |
936 | const char *value); | |
937 | ||
938 | void extended_remote_environment_support (); | |
3c69da40 | 939 | void extended_remote_set_inferior_cwd (); |
80152258 | 940 | |
3c69da40 PA |
941 | target_xfer_status remote_write_qxfer (const char *object_name, |
942 | const char *annex, | |
943 | const gdb_byte *writebuf, | |
944 | ULONGEST offset, LONGEST len, | |
945 | ULONGEST *xfered_len, | |
946 | struct packet_config *packet); | |
43c3a0e4 | 947 | |
3c69da40 PA |
948 | target_xfer_status remote_read_qxfer (const char *object_name, |
949 | const char *annex, | |
950 | gdb_byte *readbuf, ULONGEST offset, | |
951 | LONGEST len, | |
952 | ULONGEST *xfered_len, | |
953 | struct packet_config *packet); | |
43c3a0e4 | 954 | |
3c69da40 | 955 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 956 | |
3c69da40 | 957 | bool vcont_r_supported (); |
43c3a0e4 | 958 | |
288712bb AB |
959 | private: |
960 | ||
961 | bool start_remote_1 (int from_tty, int extended_p); | |
43c3a0e4 | 962 | |
3c69da40 PA |
963 | /* The remote state. Don't reference this directly. Use the |
964 | get_remote_state method instead. */ | |
965 | remote_state m_remote_state; | |
43c3a0e4 PA |
966 | }; |
967 | ||
3c69da40 PA |
968 | static const target_info extended_remote_target_info = { |
969 | "extended-remote", | |
970 | N_("Extended remote serial target in gdb-specific protocol"), | |
971 | remote_doc | |
972 | }; | |
ea9c271d | 973 | |
3c69da40 PA |
974 | /* Set up the extended remote target by extending the standard remote |
975 | target and adding to it. */ | |
976 | ||
977 | class extended_remote_target final : public remote_target | |
ea9c271d | 978 | { |
9d6eea31 | 979 | public: |
3c69da40 PA |
980 | const target_info &info () const override |
981 | { return extended_remote_target_info; } | |
9d6eea31 | 982 | |
3c69da40 PA |
983 | /* Open an extended-remote connection. */ |
984 | static void open (const char *, int); | |
de44f5a7 | 985 | |
3c69da40 PA |
986 | bool can_create_inferior () override { return true; } |
987 | void create_inferior (const char *, const std::string &, | |
988 | char **, int) override; | |
9d6eea31 | 989 | |
3c69da40 | 990 | void detach (inferior *, int) override; |
9d6eea31 | 991 | |
3c69da40 PA |
992 | bool can_attach () override { return true; } |
993 | void attach (const char *, int) override; | |
be2a5f71 | 994 | |
3c69da40 PA |
995 | void post_attach (int) override; |
996 | bool supports_disable_randomization () override; | |
997 | }; | |
1e51243a | 998 | |
a4543480 SM |
999 | struct stop_reply : public notif_event |
1000 | { | |
1001 | ~stop_reply (); | |
1002 | ||
1003 | /* The identifier of the thread about this event */ | |
1004 | ptid_t ptid; | |
1005 | ||
1006 | /* The remote state this event is associated with. When the remote | |
1007 | connection, represented by a remote_state object, is closed, | |
1008 | all the associated stop_reply events should be released. */ | |
1009 | struct remote_state *rs; | |
1010 | ||
1011 | struct target_waitstatus ws; | |
1012 | ||
1013 | /* The architecture associated with the expedited registers. */ | |
1014 | gdbarch *arch; | |
1015 | ||
1016 | /* Expedited registers. This makes remote debugging a bit more | |
1017 | efficient for those targets that provide critical registers as | |
1018 | part of their normal status mechanism (as another roundtrip to | |
1019 | fetch them is avoided). */ | |
1020 | std::vector<cached_reg_t> regcache; | |
1021 | ||
1022 | enum target_stop_reason stop_reason; | |
1023 | ||
1024 | CORE_ADDR watch_data_address; | |
1025 | ||
1026 | int core; | |
1027 | }; | |
1028 | ||
24b2de7b AB |
1029 | /* See remote.h. */ |
1030 | ||
1031 | bool | |
1032 | is_remote_target (process_stratum_target *target) | |
1033 | { | |
1034 | remote_target *rt = dynamic_cast<remote_target *> (target); | |
1035 | return rt != nullptr; | |
1036 | } | |
1037 | ||
3c69da40 | 1038 | /* Per-program-space data key. */ |
7b4a314f TT |
1039 | static const struct program_space_key<char, gdb::xfree_deleter<char>> |
1040 | remote_pspace_data; | |
2d717e4f | 1041 | |
3c69da40 PA |
1042 | /* The variable registered as the control variable used by the |
1043 | remote exec-file commands. While the remote exec-file setting is | |
1044 | per-program-space, the set/show machinery uses this as the | |
1045 | location of the remote exec-file value. */ | |
e0700ba4 | 1046 | static std::string remote_exec_file_var; |
a6f3e723 | 1047 | |
3c69da40 PA |
1048 | /* The size to align memory write packets, when practical. The protocol |
1049 | does not guarantee any alignment, and gdb will generate short | |
1050 | writes and unaligned writes, but even as a best-effort attempt this | |
1051 | can improve bulk transfers. For instance, if a write is misaligned | |
1052 | relative to the target's data bus, the stub may need to make an extra | |
1053 | round trip fetching data from the target. This doesn't make a | |
1054 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 1055 | |
3c69da40 PA |
1056 | The alignment chosen is arbitrary; usually data bus width is |
1057 | important here, not the possibly larger cache line size. */ | |
1058 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 1059 | |
3c69da40 | 1060 | /* Prototypes for local functions. */ |
74531fed | 1061 | |
3c69da40 | 1062 | static int hexnumlen (ULONGEST num); |
782b2b07 | 1063 | |
3c69da40 | 1064 | static int stubhex (int ch); |
5d93a237 | 1065 | |
3c69da40 | 1066 | static int hexnumstr (char *, ULONGEST); |
048094ac | 1067 | |
3c69da40 | 1068 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 1069 | |
3c69da40 | 1070 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1071 | |
cecb1912 | 1072 | static int stub_unpack_int (const char *buff, int fieldlength); |
5e4a05c4 | 1073 | |
3c69da40 | 1074 | struct packet_config; |
b73be471 | 1075 | |
3c69da40 | 1076 | static void show_packet_config_cmd (struct packet_config *config); |
280ceea3 | 1077 | |
3c69da40 PA |
1078 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1079 | int from_tty, | |
1080 | struct cmd_list_element *c, | |
1081 | const char *value); | |
8e88304f | 1082 | |
3c69da40 | 1083 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1084 | |
3c69da40 | 1085 | static void remote_async_inferior_event_handler (gdb_client_data); |
b80fafe3 | 1086 | |
eefce37f | 1087 | static bool remote_read_description_p (struct target_ops *target); |
88b496c3 | 1088 | |
05be00a8 | 1089 | static void remote_console_output (const char *msg); |
5965e028 | 1090 | |
3c69da40 | 1091 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1092 | |
5b6d1e4f | 1093 | static void remote_unpush_and_throw (remote_target *target); |
15a201c8 | 1094 | |
3c69da40 | 1095 | /* For "remote". */ |
80152258 | 1096 | |
3c69da40 | 1097 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1098 | |
3c69da40 | 1099 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1100 | |
3c69da40 PA |
1101 | static struct cmd_list_element *remote_set_cmdlist; |
1102 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1103 | |
3c69da40 | 1104 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1105 | |
491144b5 | 1106 | static bool use_range_stepping = true; |
3c69da40 | 1107 | |
c9d22089 SM |
1108 | /* From the remote target's point of view, each thread is in one of these three |
1109 | states. */ | |
1110 | enum class resume_state | |
1111 | { | |
1112 | /* Not resumed - we haven't been asked to resume this thread. */ | |
1113 | NOT_RESUMED, | |
1114 | ||
1115 | /* We have been asked to resume this thread, but haven't sent a vCont action | |
1116 | for it yet. We'll need to consider it next time commit_resume is | |
1117 | called. */ | |
1118 | RESUMED_PENDING_VCONT, | |
1119 | ||
1120 | /* We have been asked to resume this thread, and we have sent a vCont action | |
1121 | for it. */ | |
1122 | RESUMED, | |
1123 | }; | |
1124 | ||
1125 | /* Information about a thread's pending vCont-resume. Used when a thread is in | |
1126 | the remote_resume_state::RESUMED_PENDING_VCONT state. remote_target::resume | |
1127 | stores this information which is then picked up by | |
1128 | remote_target::commit_resume to know which is the proper action for this | |
1129 | thread to include in the vCont packet. */ | |
1130 | struct resumed_pending_vcont_info | |
1131 | { | |
1132 | /* True if the last resume call for this thread was a step request, false | |
1133 | if a continue request. */ | |
1134 | bool step; | |
1135 | ||
1136 | /* The signal specified in the last resume call for this thread. */ | |
1137 | gdb_signal sig; | |
1138 | }; | |
1139 | ||
7aabaf9d SM |
1140 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1141 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1142 | { |
7aabaf9d SM |
1143 | std::string extra; |
1144 | std::string name; | |
1145 | int core = -1; | |
799a2abe | 1146 | |
f6327dcb KB |
1147 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1148 | sequence of bytes. */ | |
7aabaf9d | 1149 | gdb::byte_vector thread_handle; |
f6327dcb | 1150 | |
799a2abe | 1151 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1152 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1153 | |
1154 | /* This is set to the data address of the access causing the target | |
1155 | to stop for a watchpoint. */ | |
7aabaf9d | 1156 | CORE_ADDR watch_data_address = 0; |
85ad3aaf | 1157 | |
c9d22089 | 1158 | /* Get the thread's resume state. */ |
a6c11cbb | 1159 | enum resume_state get_resume_state () const |
c9d22089 SM |
1160 | { |
1161 | return m_resume_state; | |
1162 | } | |
1163 | ||
1164 | /* Put the thread in the NOT_RESUMED state. */ | |
1165 | void set_not_resumed () | |
1166 | { | |
1167 | m_resume_state = resume_state::NOT_RESUMED; | |
1168 | } | |
85ad3aaf | 1169 | |
c9d22089 SM |
1170 | /* Put the thread in the RESUMED_PENDING_VCONT state. */ |
1171 | void set_resumed_pending_vcont (bool step, gdb_signal sig) | |
1172 | { | |
1173 | m_resume_state = resume_state::RESUMED_PENDING_VCONT; | |
1174 | m_resumed_pending_vcont_info.step = step; | |
1175 | m_resumed_pending_vcont_info.sig = sig; | |
1176 | } | |
85ad3aaf | 1177 | |
c9d22089 | 1178 | /* Get the information this thread's pending vCont-resumption. |
85ad3aaf | 1179 | |
c9d22089 SM |
1180 | Must only be called if the thread is in the RESUMED_PENDING_VCONT resume |
1181 | state. */ | |
1182 | const struct resumed_pending_vcont_info &resumed_pending_vcont_info () const | |
1183 | { | |
1184 | gdb_assert (m_resume_state == resume_state::RESUMED_PENDING_VCONT); | |
1185 | ||
1186 | return m_resumed_pending_vcont_info; | |
1187 | } | |
1188 | ||
1189 | /* Put the thread in the VCONT_RESUMED state. */ | |
1190 | void set_resumed () | |
1191 | { | |
1192 | m_resume_state = resume_state::RESUMED; | |
1193 | } | |
1194 | ||
1195 | private: | |
1196 | /* Resume state for this thread. This is used to implement vCont action | |
1197 | coalescing (only when the target operates in non-stop mode). | |
1198 | ||
1199 | remote_target::resume moves the thread to the RESUMED_PENDING_VCONT state, | |
1200 | which notes that this thread must be considered in the next commit_resume | |
1201 | call. | |
1202 | ||
1203 | remote_target::commit_resume sends a vCont packet with actions for the | |
1204 | threads in the RESUMED_PENDING_VCONT state and moves them to the | |
1205 | VCONT_RESUMED state. | |
1206 | ||
1207 | When reporting a stop to the core for a thread, that thread is moved back | |
1208 | to the NOT_RESUMED state. */ | |
1209 | enum resume_state m_resume_state = resume_state::NOT_RESUMED; | |
1210 | ||
1211 | /* Extra info used if the thread is in the RESUMED_PENDING_VCONT state. */ | |
1212 | struct resumed_pending_vcont_info m_resumed_pending_vcont_info; | |
dc146f7c VP |
1213 | }; |
1214 | ||
de44f5a7 | 1215 | remote_state::remote_state () |
8d64371b | 1216 | : buf (400) |
de44f5a7 | 1217 | { |
de44f5a7 PA |
1218 | } |
1219 | ||
1220 | remote_state::~remote_state () | |
1221 | { | |
1222 | xfree (this->last_pass_packet); | |
1223 | xfree (this->last_program_signals_packet); | |
de44f5a7 PA |
1224 | xfree (this->finished_object); |
1225 | xfree (this->finished_annex); | |
cf792862 TT |
1226 | } |
1227 | ||
35b1e5cc SS |
1228 | /* Utility: generate error from an incoming stub packet. */ |
1229 | static void | |
1230 | trace_error (char *buf) | |
1231 | { | |
1232 | if (*buf++ != 'E') | |
1233 | return; /* not an error msg */ | |
1234 | switch (*buf) | |
1235 | { | |
1236 | case '1': /* malformed packet error */ | |
1237 | if (*++buf == '0') /* general case: */ | |
1238 | error (_("remote.c: error in outgoing packet.")); | |
1239 | else | |
1240 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1241 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1242 | default: |
1243 | error (_("Target returns error code '%s'."), buf); | |
1244 | } | |
1245 | } | |
1246 | ||
1247 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1248 | |
6b8edb51 PA |
1249 | char * |
1250 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1251 | { |
b6bb3468 PA |
1252 | struct remote_state *rs = get_remote_state (); |
1253 | ||
35b1e5cc SS |
1254 | do /* Loop on reply from remote stub. */ |
1255 | { | |
1256 | char *buf; | |
a744cf53 | 1257 | |
0df8b418 | 1258 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b TT |
1259 | getpkt (&rs->buf, 0); |
1260 | buf = rs->buf.data (); | |
ad91cd99 | 1261 | if (buf[0] == 'E') |
35b1e5cc | 1262 | trace_error (buf); |
61012eef | 1263 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1264 | { |
1265 | ULONGEST ul; | |
1266 | CORE_ADDR from, to, org_to; | |
256642e8 | 1267 | const char *p, *pp; |
dde08ee1 | 1268 | int adjusted_size = 0; |
7556d4a4 | 1269 | int relocated = 0; |
dde08ee1 PA |
1270 | |
1271 | p = buf + strlen ("qRelocInsn:"); | |
1272 | pp = unpack_varlen_hex (p, &ul); | |
1273 | if (*pp != ';') | |
cb91c06a | 1274 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1275 | from = ul; |
1276 | ||
1277 | p = pp + 1; | |
a9cbf802 | 1278 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1279 | to = ul; |
1280 | ||
1281 | org_to = to; | |
1282 | ||
a70b8144 | 1283 | try |
dde08ee1 | 1284 | { |
f5656ead | 1285 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 1286 | relocated = 1; |
dde08ee1 | 1287 | } |
230d2906 | 1288 | catch (const gdb_exception &ex) |
7556d4a4 PA |
1289 | { |
1290 | if (ex.error == MEMORY_ERROR) | |
1291 | { | |
1292 | /* Propagate memory errors silently back to the | |
1293 | target. The stub may have limited the range of | |
1294 | addresses we can write to, for example. */ | |
1295 | } | |
1296 | else | |
1297 | { | |
1298 | /* Something unexpectedly bad happened. Be verbose | |
1299 | so we can tell what, and propagate the error back | |
1300 | to the stub, so it doesn't get stuck waiting for | |
1301 | a response. */ | |
1302 | exception_fprintf (gdb_stderr, ex, | |
1303 | _("warning: relocating instruction: ")); | |
1304 | } | |
1305 | putpkt ("E01"); | |
1306 | } | |
1307 | ||
1308 | if (relocated) | |
dde08ee1 PA |
1309 | { |
1310 | adjusted_size = to - org_to; | |
1311 | ||
8d64371b | 1312 | xsnprintf (buf, rs->buf.size (), "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1313 | putpkt (buf); |
1314 | } | |
dde08ee1 | 1315 | } |
ad91cd99 | 1316 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1317 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1318 | else | |
0df8b418 | 1319 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1320 | } |
1321 | while (1); | |
1322 | } | |
3c3bea1c | 1323 | |
9d6eea31 PA |
1324 | struct remote_arch_state * |
1325 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1326 | { |
43c3a0e4 PA |
1327 | remote_arch_state *rsa; |
1328 | ||
1329 | auto it = this->m_arch_states.find (gdbarch); | |
1330 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1331 | { |
43c3a0e4 PA |
1332 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1333 | std::forward_as_tuple (gdbarch), | |
1334 | std::forward_as_tuple (gdbarch)); | |
1335 | rsa = &p.first->second; | |
9d6eea31 PA |
1336 | |
1337 | /* Make sure that the packet buffer is plenty big enough for | |
1338 | this architecture. */ | |
8d64371b TT |
1339 | if (this->buf.size () < rsa->remote_packet_size) |
1340 | this->buf.resize (2 * rsa->remote_packet_size); | |
9d6eea31 | 1341 | } |
43c3a0e4 PA |
1342 | else |
1343 | rsa = &it->second; | |
1344 | ||
1345 | return rsa; | |
d01949b6 AC |
1346 | } |
1347 | ||
0b83947e DJ |
1348 | /* Fetch the global remote target state. */ |
1349 | ||
6b8edb51 PA |
1350 | remote_state * |
1351 | remote_target::get_remote_state () | |
0b83947e DJ |
1352 | { |
1353 | /* Make sure that the remote architecture state has been | |
1354 | initialized, because doing so might reallocate rs->buf. Any | |
1355 | function which calls getpkt also needs to be mindful of changes | |
1356 | to rs->buf, but this call limits the number of places which run | |
1357 | into trouble. */ | |
3c69da40 | 1358 | m_remote_state.get_remote_arch_state (target_gdbarch ()); |
0b83947e | 1359 | |
3c69da40 | 1360 | return &m_remote_state; |
0b83947e DJ |
1361 | } |
1362 | ||
94585166 DB |
1363 | /* Fetch the remote exec-file from the current program space. */ |
1364 | ||
1365 | static const char * | |
1366 | get_remote_exec_file (void) | |
1367 | { | |
1368 | char *remote_exec_file; | |
1369 | ||
7b4a314f | 1370 | remote_exec_file = remote_pspace_data.get (current_program_space); |
94585166 DB |
1371 | if (remote_exec_file == NULL) |
1372 | return ""; | |
1373 | ||
1374 | return remote_exec_file; | |
1375 | } | |
1376 | ||
1377 | /* Set the remote exec file for PSPACE. */ | |
1378 | ||
1379 | static void | |
1380 | set_pspace_remote_exec_file (struct program_space *pspace, | |
7b4a314f | 1381 | const char *remote_exec_file) |
94585166 | 1382 | { |
7b4a314f | 1383 | char *old_file = remote_pspace_data.get (pspace); |
94585166 DB |
1384 | |
1385 | xfree (old_file); | |
7b4a314f | 1386 | remote_pspace_data.set (pspace, xstrdup (remote_exec_file)); |
94585166 DB |
1387 | } |
1388 | ||
1389 | /* The "set/show remote exec-file" set command hook. */ | |
1390 | ||
1391 | static void | |
eb4c3f4a | 1392 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1393 | struct cmd_list_element *c) |
1394 | { | |
e0700ba4 SM |
1395 | set_pspace_remote_exec_file (current_program_space, |
1396 | remote_exec_file_var.c_str ()); | |
94585166 DB |
1397 | } |
1398 | ||
1399 | /* The "set/show remote exec-file" show command hook. */ | |
1400 | ||
1401 | static void | |
1402 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1403 | struct cmd_list_element *cmd, const char *value) | |
1404 | { | |
acdf84a6 | 1405 | fprintf_filtered (file, "%s\n", get_remote_exec_file ()); |
94585166 DB |
1406 | } |
1407 | ||
c21236dc PA |
1408 | static int |
1409 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1410 | { |
74ca34ce | 1411 | int regnum, num_remote_regs, offset; |
74ca34ce | 1412 | struct packet_reg **remote_regs; |
ea9c271d | 1413 | |
4a22f64d | 1414 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1415 | { |
c21236dc | 1416 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1417 | |
4a22f64d | 1418 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1419 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1420 | r->pnum = -1; | |
1421 | else | |
1422 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1423 | ||
b323314b | 1424 | r->regnum = regnum; |
74ca34ce DJ |
1425 | } |
1426 | ||
1427 | /* Define the g/G packet format as the contents of each register | |
1428 | with a remote protocol number, in order of ascending protocol | |
1429 | number. */ | |
1430 | ||
224c3ddb | 1431 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1432 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1433 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1434 | regnum++) |
c21236dc PA |
1435 | if (regs[regnum].pnum != -1) |
1436 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1437 | |
39ef2f62 CB |
1438 | std::sort (remote_regs, remote_regs + num_remote_regs, |
1439 | [] (const packet_reg *a, const packet_reg *b) | |
1440 | { return a->pnum < b->pnum; }); | |
74ca34ce DJ |
1441 | |
1442 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1443 | { | |
1444 | remote_regs[regnum]->in_g_packet = 1; | |
1445 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1446 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1447 | } |
1448 | ||
c21236dc PA |
1449 | return offset; |
1450 | } | |
1451 | ||
1452 | /* Given the architecture described by GDBARCH, return the remote | |
1453 | protocol register's number and the register's offset in the g/G | |
1454 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1455 | If the target does not have a mapping for REGNUM, return false, | |
1456 | otherwise, return true. */ | |
1457 | ||
1458 | int | |
1459 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1460 | int *pnum, int *poffset) | |
1461 | { | |
c21236dc PA |
1462 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1463 | ||
b80406ac | 1464 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1465 | |
b80406ac | 1466 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1467 | |
1468 | *pnum = regs[regnum].pnum; | |
1469 | *poffset = regs[regnum].offset; | |
1470 | ||
c21236dc PA |
1471 | return *pnum != -1; |
1472 | } | |
1473 | ||
9d6eea31 | 1474 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1475 | { |
c21236dc PA |
1476 | /* Use the architecture to build a regnum<->pnum table, which will be |
1477 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1478 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1479 | |
74ca34ce DJ |
1480 | /* Record the maximum possible size of the g packet - it may turn out |
1481 | to be smaller. */ | |
9d6eea31 PA |
1482 | this->sizeof_g_packet |
1483 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1484 | |
0df8b418 | 1485 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1486 | remote stubs have a hardwired buffer size of 400 bytes |
1487 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1488 | as the maximum packet-size to ensure that the packet and an extra | |
1489 | NUL character can always fit in the buffer. This stops GDB | |
1490 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1491 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1492 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1493 | |
ea9c271d | 1494 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1495 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1496 | |
1497 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1498 | default, adjust the size accordingly. Remember that each byte is |
1499 | encoded as two characters. 32 is the overhead for the packet | |
1500 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1501 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1502 | little. */ |
9d6eea31 PA |
1503 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1504 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1505 | } |
1506 | ||
6b8edb51 PA |
1507 | /* Get a pointer to the current remote target. If not connected to a |
1508 | remote target, return NULL. */ | |
1509 | ||
1510 | static remote_target * | |
1511 | get_current_remote_target () | |
1512 | { | |
5b6d1e4f | 1513 | target_ops *proc_target = current_inferior ()->process_target (); |
6b8edb51 PA |
1514 | return dynamic_cast<remote_target *> (proc_target); |
1515 | } | |
1516 | ||
ea9c271d DJ |
1517 | /* Return the current allowed size of a remote packet. This is |
1518 | inferred from the current architecture, and should be used to | |
1519 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1520 | long |
1521 | remote_target::get_remote_packet_size () | |
ea9c271d | 1522 | { |
be2a5f71 | 1523 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1524 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1525 | |
be2a5f71 DJ |
1526 | if (rs->explicit_packet_size) |
1527 | return rs->explicit_packet_size; | |
1528 | ||
ea9c271d | 1529 | return rsa->remote_packet_size; |
d01949b6 AC |
1530 | } |
1531 | ||
ad10f812 | 1532 | static struct packet_reg * |
5cd63fda PA |
1533 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1534 | long regnum) | |
ad10f812 | 1535 | { |
5cd63fda | 1536 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1537 | return NULL; |
1538 | else | |
ad10f812 | 1539 | { |
ea9c271d | 1540 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1541 | |
b323314b AC |
1542 | gdb_assert (r->regnum == regnum); |
1543 | return r; | |
ad10f812 | 1544 | } |
ad10f812 AC |
1545 | } |
1546 | ||
1547 | static struct packet_reg * | |
5cd63fda PA |
1548 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1549 | LONGEST pnum) | |
ad10f812 | 1550 | { |
b323314b | 1551 | int i; |
a744cf53 | 1552 | |
5cd63fda | 1553 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1554 | { |
ea9c271d | 1555 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1556 | |
b323314b AC |
1557 | if (r->pnum == pnum) |
1558 | return r; | |
ad10f812 AC |
1559 | } |
1560 | return NULL; | |
d01949b6 AC |
1561 | } |
1562 | ||
9a7071a8 JB |
1563 | /* Allow the user to specify what sequence to send to the remote |
1564 | when he requests a program interruption: Although ^C is usually | |
1565 | what remote systems expect (this is the default, here), it is | |
1566 | sometimes preferable to send a break. On other systems such | |
1567 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1568 | is required in order to interrupt the execution. */ | |
1569 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1570 | const char interrupt_sequence_break[] = "BREAK"; | |
1571 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1572 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1573 | { |
1574 | interrupt_sequence_control_c, | |
1575 | interrupt_sequence_break, | |
1576 | interrupt_sequence_break_g, | |
1577 | NULL | |
1578 | }; | |
1579 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1580 | ||
1581 | static void | |
1582 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1583 | struct cmd_list_element *c, | |
1584 | const char *value) | |
1585 | { | |
1586 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
1587 | fprintf_filtered (file, | |
1588 | _("Send the ASCII ETX character (Ctrl-c) " | |
1589 | "to the remote target to interrupt the " | |
1590 | "execution of the program.\n")); | |
1591 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
1592 | fprintf_filtered (file, | |
1593 | _("send a break signal to the remote target " | |
1594 | "to interrupt the execution of the program.\n")); | |
1595 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
1596 | fprintf_filtered (file, | |
1597 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1598 | "the remote target to interrupt the execution " | |
1599 | "of Linux kernel.\n")); | |
1600 | else | |
1601 | internal_error (__FILE__, __LINE__, | |
1602 | _("Invalid value for interrupt_sequence_mode: %s."), | |
1603 | interrupt_sequence_mode); | |
1604 | } | |
6426a772 | 1605 | |
9a7071a8 JB |
1606 | /* This boolean variable specifies whether interrupt_sequence is sent |
1607 | to the remote target when gdb connects to it. | |
1608 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1609 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
491144b5 | 1610 | static bool interrupt_on_connect = false; |
c906108c | 1611 | |
9a7071a8 JB |
1612 | /* This variable is used to implement the "set/show remotebreak" commands. |
1613 | Since these commands are now deprecated in favor of "set/show remote | |
1614 | interrupt-sequence", it no longer has any effect on the code. */ | |
491144b5 | 1615 | static bool remote_break; |
c906108c | 1616 | |
9a7071a8 | 1617 | static void |
eb4c3f4a | 1618 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1619 | { |
1620 | if (remote_break) | |
1621 | interrupt_sequence_mode = interrupt_sequence_break; | |
1622 | else | |
1623 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1624 | } | |
1625 | ||
1626 | static void | |
1627 | show_remotebreak (struct ui_file *file, int from_tty, | |
1628 | struct cmd_list_element *c, | |
1629 | const char *value) | |
1630 | { | |
1631 | } | |
1632 | ||
c906108c SS |
1633 | /* This variable sets the number of bits in an address that are to be |
1634 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1635 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1636 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1637 | initial implementation of remote.c restricted the address sent in | |
1638 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1639 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1640 | address was never sent. Since fixing this bug may cause a break in | |
85102364 | 1641 | some remote targets this variable is principally provided to |
23860348 | 1642 | facilitate backward compatibility. */ |
c906108c | 1643 | |
883b9c6c | 1644 | static unsigned int remote_address_size; |
c906108c | 1645 | |
11cf8741 | 1646 | \f |
11cf8741 | 1647 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1648 | memory read/write packet. MIN (rsa->remote_packet_size, |
1649 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1650 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1651 | (speed up transfers). The variables ``preferred_*'' (the user |
1652 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1653 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1654 | |
1655 | struct memory_packet_config | |
1656 | { | |
a121b7c1 | 1657 | const char *name; |
11cf8741 JM |
1658 | long size; |
1659 | int fixed_p; | |
1660 | }; | |
1661 | ||
cc0be08f PA |
1662 | /* The default max memory-write-packet-size, when the setting is |
1663 | "fixed". The 16k is historical. (It came from older GDB's using | |
1664 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1665 | don't cope very well with large alloca calls.) */ | |
1666 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1667 | |
1668 | /* The minimum remote packet size for memory transfers. Ensures we | |
1669 | can write at least one byte. */ | |
1670 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1671 | ||
cc0be08f PA |
1672 | /* Get the memory packet size, assuming it is fixed. */ |
1673 | ||
1674 | static long | |
1675 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1676 | { | |
1677 | gdb_assert (config->fixed_p); | |
1678 | ||
1679 | if (config->size <= 0) | |
1680 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1681 | else | |
1682 | return config->size; | |
1683 | } | |
1684 | ||
11cf8741 JM |
1685 | /* Compute the current size of a read/write packet. Since this makes |
1686 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1687 | ||
6b8edb51 PA |
1688 | long |
1689 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 1690 | { |
d01949b6 | 1691 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1692 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1693 | |
11cf8741 JM |
1694 | long what_they_get; |
1695 | if (config->fixed_p) | |
cc0be08f | 1696 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1697 | else |
1698 | { | |
ea9c271d | 1699 | what_they_get = get_remote_packet_size (); |
23860348 | 1700 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1701 | if (config->size > 0 |
1702 | && what_they_get > config->size) | |
1703 | what_they_get = config->size; | |
be2a5f71 DJ |
1704 | |
1705 | /* Limit it to the size of the targets ``g'' response unless we have | |
1706 | permission from the stub to use a larger packet size. */ | |
1707 | if (rs->explicit_packet_size == 0 | |
1708 | && rsa->actual_register_packet_size > 0 | |
1709 | && what_they_get > rsa->actual_register_packet_size) | |
1710 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1711 | } |
a5c0808e PA |
1712 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1713 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1714 | |
1715 | /* Make sure there is room in the global buffer for this packet | |
1716 | (including its trailing NUL byte). */ | |
8d64371b TT |
1717 | if (rs->buf.size () < what_they_get + 1) |
1718 | rs->buf.resize (2 * what_they_get); | |
6d820c5c | 1719 | |
11cf8741 JM |
1720 | return what_they_get; |
1721 | } | |
1722 | ||
0df8b418 | 1723 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1724 | something really big then do a sanity check. */ |
11cf8741 JM |
1725 | |
1726 | static void | |
ac88e2de | 1727 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1728 | { |
1729 | int fixed_p = config->fixed_p; | |
1730 | long size = config->size; | |
a744cf53 | 1731 | |
11cf8741 | 1732 | if (args == NULL) |
8a3fe4f8 | 1733 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1734 | else if (strcmp (args, "hard") == 0 |
1735 | || strcmp (args, "fixed") == 0) | |
1736 | fixed_p = 1; | |
1737 | else if (strcmp (args, "soft") == 0 | |
1738 | || strcmp (args, "limit") == 0) | |
1739 | fixed_p = 0; | |
1740 | else | |
1741 | { | |
1742 | char *end; | |
a744cf53 | 1743 | |
11cf8741 JM |
1744 | size = strtoul (args, &end, 0); |
1745 | if (args == end) | |
8a3fe4f8 | 1746 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1747 | |
1748 | /* Instead of explicitly capping the size of a packet to or | |
1749 | disallowing it, the user is allowed to set the size to | |
1750 | something arbitrarily large. */ | |
11cf8741 | 1751 | } |
a5c0808e | 1752 | |
23860348 | 1753 | /* Extra checks? */ |
11cf8741 JM |
1754 | if (fixed_p && !config->fixed_p) |
1755 | { | |
cc0be08f PA |
1756 | /* So that the query shows the correct value. */ |
1757 | long query_size = (size <= 0 | |
1758 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
1759 | : size); | |
1760 | ||
e2e0b3e5 AC |
1761 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1762 | "of %ld bytes. Change the packet size? "), | |
cc0be08f | 1763 | config->name, query_size)) |
8a3fe4f8 | 1764 | error (_("Packet size not changed.")); |
11cf8741 | 1765 | } |
23860348 | 1766 | /* Update the config. */ |
11cf8741 JM |
1767 | config->fixed_p = fixed_p; |
1768 | config->size = size; | |
1769 | } | |
1770 | ||
1771 | static void | |
1772 | show_memory_packet_size (struct memory_packet_config *config) | |
1773 | { | |
cc0be08f PA |
1774 | if (config->size == 0) |
1775 | printf_filtered (_("The %s is 0 (default). "), config->name); | |
1776 | else | |
1777 | printf_filtered (_("The %s is %ld. "), config->name, config->size); | |
11cf8741 | 1778 | if (config->fixed_p) |
a3f17187 | 1779 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
cc0be08f | 1780 | get_fixed_memory_packet_size (config)); |
11cf8741 | 1781 | else |
cc0be08f | 1782 | { |
6b8edb51 | 1783 | remote_target *remote = get_current_remote_target (); |
cc0be08f | 1784 | |
6b8edb51 | 1785 | if (remote != NULL) |
cc0be08f | 1786 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
6b8edb51 | 1787 | remote->get_memory_packet_size (config)); |
cc0be08f PA |
1788 | else |
1789 | puts_filtered ("The actual limit will be further reduced " | |
1790 | "dependent on the target.\n"); | |
1791 | } | |
11cf8741 JM |
1792 | } |
1793 | ||
5b6d1e4f | 1794 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1795 | static struct memory_packet_config memory_write_packet_config = |
1796 | { | |
1797 | "memory-write-packet-size", | |
1798 | }; | |
1799 | ||
1800 | static void | |
ac88e2de | 1801 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1802 | { |
1803 | set_memory_packet_size (args, &memory_write_packet_config); | |
1804 | } | |
1805 | ||
1806 | static void | |
ac88e2de | 1807 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1808 | { |
1809 | show_memory_packet_size (&memory_write_packet_config); | |
1810 | } | |
1811 | ||
055303e2 AB |
1812 | /* Show the number of hardware watchpoints that can be used. */ |
1813 | ||
1814 | static void | |
1815 | show_hardware_watchpoint_limit (struct ui_file *file, int from_tty, | |
1816 | struct cmd_list_element *c, | |
1817 | const char *value) | |
1818 | { | |
1819 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1820 | "watchpoints is %s.\n"), value); | |
1821 | } | |
1822 | ||
1823 | /* Show the length limit (in bytes) for hardware watchpoints. */ | |
1824 | ||
1825 | static void | |
1826 | show_hardware_watchpoint_length_limit (struct ui_file *file, int from_tty, | |
1827 | struct cmd_list_element *c, | |
1828 | const char *value) | |
1829 | { | |
1830 | fprintf_filtered (file, _("The maximum length (in bytes) of a target " | |
1831 | "hardware watchpoint is %s.\n"), value); | |
1832 | } | |
1833 | ||
1834 | /* Show the number of hardware breakpoints that can be used. */ | |
1835 | ||
1836 | static void | |
1837 | show_hardware_breakpoint_limit (struct ui_file *file, int from_tty, | |
1838 | struct cmd_list_element *c, | |
1839 | const char *value) | |
1840 | { | |
1841 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1842 | "breakpoints is %s.\n"), value); | |
1843 | } | |
1844 | ||
6cc8564b LM |
1845 | /* Controls the maximum number of characters to display in the debug output |
1846 | for each remote packet. The remaining characters are omitted. */ | |
1847 | ||
1848 | static int remote_packet_max_chars = 512; | |
1849 | ||
1850 | /* Show the maximum number of characters to display for each remote packet | |
1851 | when remote debugging is enabled. */ | |
1852 | ||
1853 | static void | |
1854 | show_remote_packet_max_chars (struct ui_file *file, int from_tty, | |
1855 | struct cmd_list_element *c, | |
1856 | const char *value) | |
1857 | { | |
1858 | fprintf_filtered (file, _("Number of remote packet characters to " | |
1859 | "display is %s.\n"), value); | |
1860 | } | |
1861 | ||
6b8edb51 PA |
1862 | long |
1863 | remote_target::get_memory_write_packet_size () | |
11cf8741 JM |
1864 | { |
1865 | return get_memory_packet_size (&memory_write_packet_config); | |
1866 | } | |
1867 | ||
5b6d1e4f | 1868 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1869 | static struct memory_packet_config memory_read_packet_config = |
1870 | { | |
1871 | "memory-read-packet-size", | |
1872 | }; | |
1873 | ||
1874 | static void | |
ac88e2de | 1875 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1876 | { |
1877 | set_memory_packet_size (args, &memory_read_packet_config); | |
1878 | } | |
1879 | ||
1880 | static void | |
ac88e2de | 1881 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1882 | { |
1883 | show_memory_packet_size (&memory_read_packet_config); | |
1884 | } | |
1885 | ||
6b8edb51 PA |
1886 | long |
1887 | remote_target::get_memory_read_packet_size () | |
11cf8741 JM |
1888 | { |
1889 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1890 | |
11cf8741 JM |
1891 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1892 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1893 | increased beyond this. */ |
1894 | if (size > get_remote_packet_size ()) | |
1895 | size = get_remote_packet_size (); | |
11cf8741 JM |
1896 | return size; |
1897 | } | |
1898 | ||
11cf8741 | 1899 | \f |
5a2468f5 | 1900 | |
5a2468f5 JM |
1901 | struct packet_config |
1902 | { | |
bb572ddd DJ |
1903 | const char *name; |
1904 | const char *title; | |
4082afcc PA |
1905 | |
1906 | /* If auto, GDB auto-detects support for this packet or feature, | |
1907 | either through qSupported, or by trying the packet and looking | |
1908 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1909 | packet. If false, the packet is disabled. Configs that don't |
1910 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1911 | enum auto_boolean detect; |
4082afcc | 1912 | |
fcef6471 SM |
1913 | /* The "show remote foo-packet" command created for this packet. */ |
1914 | cmd_list_element *show_cmd; | |
1915 | ||
4082afcc | 1916 | /* Does the target support this packet? */ |
5a2468f5 JM |
1917 | enum packet_support support; |
1918 | }; | |
1919 | ||
4082afcc PA |
1920 | static enum packet_support packet_config_support (struct packet_config *config); |
1921 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1922 | |
1923 | static void | |
fba45db2 | 1924 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1925 | { |
a121b7c1 | 1926 | const char *support = "internal-error"; |
a744cf53 | 1927 | |
4082afcc | 1928 | switch (packet_config_support (config)) |
5a2468f5 JM |
1929 | { |
1930 | case PACKET_ENABLE: | |
1931 | support = "enabled"; | |
1932 | break; | |
1933 | case PACKET_DISABLE: | |
1934 | support = "disabled"; | |
1935 | break; | |
1936 | case PACKET_SUPPORT_UNKNOWN: | |
1937 | support = "unknown"; | |
1938 | break; | |
1939 | } | |
1940 | switch (config->detect) | |
1941 | { | |
7f19b9a2 | 1942 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1943 | printf_filtered (_("Support for the `%s' packet " |
1944 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1945 | config->name, support); |
5a2468f5 | 1946 | break; |
7f19b9a2 AC |
1947 | case AUTO_BOOLEAN_TRUE: |
1948 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1949 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1950 | config->name, support); | |
8e248173 | 1951 | break; |
5a2468f5 JM |
1952 | } |
1953 | } | |
1954 | ||
1955 | static void | |
bb572ddd DJ |
1956 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1957 | const char *title, int legacy) | |
d471ea57 | 1958 | { |
5a2468f5 JM |
1959 | config->name = name; |
1960 | config->title = title; | |
8579fd13 AB |
1961 | gdb::unique_xmalloc_ptr<char> set_doc |
1962 | = xstrprintf ("Set use of remote protocol `%s' (%s) packet.", | |
1963 | name, title); | |
1964 | gdb::unique_xmalloc_ptr<char> show_doc | |
1965 | = xstrprintf ("Show current use of remote protocol `%s' (%s) packet.", | |
1966 | name, title); | |
d471ea57 | 1967 | /* set/show TITLE-packet {auto,on,off} */ |
8579fd13 | 1968 | gdb::unique_xmalloc_ptr<char> cmd_name = xstrprintf ("%s-packet", title); |
5e84b7ee | 1969 | set_show_commands cmds |
8579fd13 AB |
1970 | = add_setshow_auto_boolean_cmd (cmd_name.release (), class_obscure, |
1971 | &config->detect, set_doc.get (), | |
1972 | show_doc.get (), NULL, /* help_doc */ | |
5e84b7ee SM |
1973 | NULL, |
1974 | show_remote_protocol_packet_cmd, | |
1975 | &remote_set_cmdlist, &remote_show_cmdlist); | |
fcef6471 | 1976 | config->show_cmd = cmds.show; |
5e84b7ee | 1977 | |
23860348 | 1978 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1979 | if (legacy) |
1980 | { | |
8579fd13 AB |
1981 | /* It's not clear who should take ownership of this string, so, for |
1982 | now, make it static, and give copies to each of the add_alias_cmd | |
1983 | calls below. */ | |
1984 | static gdb::unique_xmalloc_ptr<char> legacy_name | |
1985 | = xstrprintf ("%s-packet", name); | |
1986 | add_alias_cmd (legacy_name.get (), cmds.set, class_obscure, 0, | |
bb572ddd | 1987 | &remote_set_cmdlist); |
8579fd13 | 1988 | add_alias_cmd (legacy_name.get (), cmds.show, class_obscure, 0, |
bb572ddd | 1989 | &remote_show_cmdlist); |
d471ea57 | 1990 | } |
5a2468f5 JM |
1991 | } |
1992 | ||
d471ea57 | 1993 | static enum packet_result |
a76d924d | 1994 | packet_check_result (const char *buf) |
5a2468f5 | 1995 | { |
d471ea57 | 1996 | if (buf[0] != '\0') |
5a2468f5 | 1997 | { |
d471ea57 | 1998 | /* The stub recognized the packet request. Check that the |
23860348 | 1999 | operation succeeded. */ |
a76d924d DJ |
2000 | if (buf[0] == 'E' |
2001 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
2002 | && buf[3] == '\0') | |
85102364 | 2003 | /* "Enn" - definitely an error. */ |
a76d924d DJ |
2004 | return PACKET_ERROR; |
2005 | ||
2006 | /* Always treat "E." as an error. This will be used for | |
2007 | more verbose error messages, such as E.memtypes. */ | |
2008 | if (buf[0] == 'E' && buf[1] == '.') | |
2009 | return PACKET_ERROR; | |
2010 | ||
2011 | /* The packet may or may not be OK. Just assume it is. */ | |
2012 | return PACKET_OK; | |
2013 | } | |
2014 | else | |
2015 | /* The stub does not support the packet. */ | |
2016 | return PACKET_UNKNOWN; | |
2017 | } | |
2018 | ||
8d64371b TT |
2019 | static enum packet_result |
2020 | packet_check_result (const gdb::char_vector &buf) | |
2021 | { | |
2022 | return packet_check_result (buf.data ()); | |
2023 | } | |
2024 | ||
a76d924d DJ |
2025 | static enum packet_result |
2026 | packet_ok (const char *buf, struct packet_config *config) | |
2027 | { | |
2028 | enum packet_result result; | |
2029 | ||
4082afcc PA |
2030 | if (config->detect != AUTO_BOOLEAN_TRUE |
2031 | && config->support == PACKET_DISABLE) | |
2032 | internal_error (__FILE__, __LINE__, | |
2033 | _("packet_ok: attempt to use a disabled packet")); | |
2034 | ||
a76d924d DJ |
2035 | result = packet_check_result (buf); |
2036 | switch (result) | |
2037 | { | |
2038 | case PACKET_OK: | |
2039 | case PACKET_ERROR: | |
2040 | /* The stub recognized the packet request. */ | |
4082afcc | 2041 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 2042 | { |
2189c312 SM |
2043 | remote_debug_printf ("Packet %s (%s) is supported", |
2044 | config->name, config->title); | |
d471ea57 | 2045 | config->support = PACKET_ENABLE; |
d471ea57 | 2046 | } |
a76d924d DJ |
2047 | break; |
2048 | case PACKET_UNKNOWN: | |
23860348 | 2049 | /* The stub does not support the packet. */ |
4082afcc PA |
2050 | if (config->detect == AUTO_BOOLEAN_AUTO |
2051 | && config->support == PACKET_ENABLE) | |
d471ea57 | 2052 | { |
4082afcc PA |
2053 | /* If the stub previously indicated that the packet was |
2054 | supported then there is a protocol error. */ | |
2055 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
2056 | config->name, config->title); | |
2057 | } | |
2058 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
2059 | { | |
2060 | /* The user set it wrong. */ | |
2061 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
2062 | config->name, config->title); | |
d471ea57 | 2063 | } |
4082afcc | 2064 | |
2189c312 SM |
2065 | remote_debug_printf ("Packet %s (%s) is NOT supported", |
2066 | config->name, config->title); | |
4082afcc | 2067 | config->support = PACKET_DISABLE; |
a76d924d | 2068 | break; |
5a2468f5 | 2069 | } |
a76d924d DJ |
2070 | |
2071 | return result; | |
5a2468f5 JM |
2072 | } |
2073 | ||
8d64371b TT |
2074 | static enum packet_result |
2075 | packet_ok (const gdb::char_vector &buf, struct packet_config *config) | |
2076 | { | |
2077 | return packet_ok (buf.data (), config); | |
2078 | } | |
2079 | ||
444abaca DJ |
2080 | enum { |
2081 | PACKET_vCont = 0, | |
2082 | PACKET_X, | |
2083 | PACKET_qSymbol, | |
2084 | PACKET_P, | |
2085 | PACKET_p, | |
2086 | PACKET_Z0, | |
2087 | PACKET_Z1, | |
2088 | PACKET_Z2, | |
2089 | PACKET_Z3, | |
2090 | PACKET_Z4, | |
15a201c8 | 2091 | PACKET_vFile_setfs, |
a6b151f1 DJ |
2092 | PACKET_vFile_open, |
2093 | PACKET_vFile_pread, | |
2094 | PACKET_vFile_pwrite, | |
2095 | PACKET_vFile_close, | |
2096 | PACKET_vFile_unlink, | |
b9e7b9c3 | 2097 | PACKET_vFile_readlink, |
0a93529c | 2098 | PACKET_vFile_fstat, |
0876f84a | 2099 | PACKET_qXfer_auxv, |
23181151 | 2100 | PACKET_qXfer_features, |
c78fa86a | 2101 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 2102 | PACKET_qXfer_libraries, |
2268b414 | 2103 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 2104 | PACKET_qXfer_memory_map, |
07e059b5 | 2105 | PACKET_qXfer_osdata, |
dc146f7c | 2106 | PACKET_qXfer_threads, |
0fb4aa4b | 2107 | PACKET_qXfer_statictrace_read, |
b3b9301e | 2108 | PACKET_qXfer_traceframe_info, |
169081d0 | 2109 | PACKET_qXfer_uib, |
711e434b | 2110 | PACKET_qGetTIBAddr, |
444abaca | 2111 | PACKET_qGetTLSAddr, |
be2a5f71 | 2112 | PACKET_qSupported, |
bd3eecc3 | 2113 | PACKET_qTStatus, |
89be2091 | 2114 | PACKET_QPassSignals, |
82075af2 | 2115 | PACKET_QCatchSyscalls, |
9b224c5e | 2116 | PACKET_QProgramSignals, |
bc3b087d | 2117 | PACKET_QSetWorkingDir, |
aefd8b33 | 2118 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
2119 | PACKET_QEnvironmentHexEncoded, |
2120 | PACKET_QEnvironmentReset, | |
2121 | PACKET_QEnvironmentUnset, | |
936d2992 | 2122 | PACKET_qCRC, |
08388c79 | 2123 | PACKET_qSearch_memory, |
2d717e4f DJ |
2124 | PACKET_vAttach, |
2125 | PACKET_vRun, | |
a6f3e723 | 2126 | PACKET_QStartNoAckMode, |
82f73884 | 2127 | PACKET_vKill, |
4aa995e1 PA |
2128 | PACKET_qXfer_siginfo_read, |
2129 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 2130 | PACKET_qAttached, |
4082afcc PA |
2131 | |
2132 | /* Support for conditional tracepoints. */ | |
782b2b07 | 2133 | PACKET_ConditionalTracepoints, |
4082afcc PA |
2134 | |
2135 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 2136 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
2137 | |
2138 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 2139 | PACKET_BreakpointCommands, |
4082afcc PA |
2140 | |
2141 | /* Support for fast tracepoints. */ | |
7a697b8d | 2142 | PACKET_FastTracepoints, |
4082afcc PA |
2143 | |
2144 | /* Support for static tracepoints. */ | |
0fb4aa4b | 2145 | PACKET_StaticTracepoints, |
4082afcc PA |
2146 | |
2147 | /* Support for installing tracepoints while a trace experiment is | |
2148 | running. */ | |
1e4d1764 | 2149 | PACKET_InstallInTrace, |
4082afcc | 2150 | |
40ab02ce MS |
2151 | PACKET_bc, |
2152 | PACKET_bs, | |
409873ef | 2153 | PACKET_TracepointSource, |
d914c394 | 2154 | PACKET_QAllow, |
78d85199 | 2155 | PACKET_qXfer_fdpic, |
03583c20 | 2156 | PACKET_QDisableRandomization, |
d1feda86 | 2157 | PACKET_QAgent, |
f6f899bf | 2158 | PACKET_QTBuffer_size, |
9accd112 MM |
2159 | PACKET_Qbtrace_off, |
2160 | PACKET_Qbtrace_bts, | |
b20a6524 | 2161 | PACKET_Qbtrace_pt, |
9accd112 | 2162 | PACKET_qXfer_btrace, |
4082afcc PA |
2163 | |
2164 | /* Support for the QNonStop packet. */ | |
2165 | PACKET_QNonStop, | |
2166 | ||
65706a29 PA |
2167 | /* Support for the QThreadEvents packet. */ |
2168 | PACKET_QThreadEvents, | |
2169 | ||
4082afcc PA |
2170 | /* Support for multi-process extensions. */ |
2171 | PACKET_multiprocess_feature, | |
2172 | ||
2173 | /* Support for enabling and disabling tracepoints while a trace | |
2174 | experiment is running. */ | |
2175 | PACKET_EnableDisableTracepoints_feature, | |
2176 | ||
2177 | /* Support for collecting strings using the tracenz bytecode. */ | |
2178 | PACKET_tracenz_feature, | |
2179 | ||
2180 | /* Support for continuing to run a trace experiment while GDB is | |
2181 | disconnected. */ | |
2182 | PACKET_DisconnectedTracing_feature, | |
2183 | ||
2184 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
2185 | PACKET_augmented_libraries_svr4_read_feature, | |
2186 | ||
f4abbc16 MM |
2187 | /* Support for the qXfer:btrace-conf:read packet. */ |
2188 | PACKET_qXfer_btrace_conf, | |
2189 | ||
d33501a5 MM |
2190 | /* Support for the Qbtrace-conf:bts:size packet. */ |
2191 | PACKET_Qbtrace_conf_bts_size, | |
2192 | ||
f7e6eed5 PA |
2193 | /* Support for swbreak+ feature. */ |
2194 | PACKET_swbreak_feature, | |
2195 | ||
2196 | /* Support for hwbreak+ feature. */ | |
2197 | PACKET_hwbreak_feature, | |
2198 | ||
89245bc0 DB |
2199 | /* Support for fork events. */ |
2200 | PACKET_fork_event_feature, | |
2201 | ||
2202 | /* Support for vfork events. */ | |
2203 | PACKET_vfork_event_feature, | |
2204 | ||
b20a6524 MM |
2205 | /* Support for the Qbtrace-conf:pt:size packet. */ |
2206 | PACKET_Qbtrace_conf_pt_size, | |
2207 | ||
94585166 DB |
2208 | /* Support for exec events. */ |
2209 | PACKET_exec_event_feature, | |
2210 | ||
750ce8d1 YQ |
2211 | /* Support for query supported vCont actions. */ |
2212 | PACKET_vContSupported, | |
2213 | ||
de979965 PA |
2214 | /* Support remote CTRL-C. */ |
2215 | PACKET_vCtrlC, | |
2216 | ||
f2faf941 PA |
2217 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
2218 | PACKET_no_resumed, | |
2219 | ||
2c2e7f87 LM |
2220 | /* Support for memory tagging, allocation tag fetch/store |
2221 | packets and the tag violation stop replies. */ | |
2222 | PACKET_memory_tagging_feature, | |
2223 | ||
444abaca DJ |
2224 | PACKET_MAX |
2225 | }; | |
506fb367 | 2226 | |
5b6d1e4f PA |
2227 | /* FIXME: needs to be per-remote-target. Ignoring this for now, |
2228 | assuming all remote targets are the same server (thus all support | |
2229 | the same packets). */ | |
444abaca | 2230 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 2231 | |
f7e6eed5 PA |
2232 | /* Returns the packet's corresponding "set remote foo-packet" command |
2233 | state. See struct packet_config for more details. */ | |
2234 | ||
2235 | static enum auto_boolean | |
2236 | packet_set_cmd_state (int packet) | |
2237 | { | |
2238 | return remote_protocol_packets[packet].detect; | |
2239 | } | |
2240 | ||
4082afcc PA |
2241 | /* Returns whether a given packet or feature is supported. This takes |
2242 | into account the state of the corresponding "set remote foo-packet" | |
2243 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2244 | |
4082afcc PA |
2245 | static enum packet_support |
2246 | packet_config_support (struct packet_config *config) | |
2247 | { | |
2248 | switch (config->detect) | |
444abaca | 2249 | { |
4082afcc PA |
2250 | case AUTO_BOOLEAN_TRUE: |
2251 | return PACKET_ENABLE; | |
2252 | case AUTO_BOOLEAN_FALSE: | |
2253 | return PACKET_DISABLE; | |
2254 | case AUTO_BOOLEAN_AUTO: | |
2255 | return config->support; | |
2256 | default: | |
557b4d76 | 2257 | gdb_assert_not_reached ("bad switch"); |
444abaca | 2258 | } |
4082afcc PA |
2259 | } |
2260 | ||
2261 | /* Same as packet_config_support, but takes the packet's enum value as | |
2262 | argument. */ | |
2263 | ||
2264 | static enum packet_support | |
2265 | packet_support (int packet) | |
2266 | { | |
2267 | struct packet_config *config = &remote_protocol_packets[packet]; | |
2268 | ||
2269 | return packet_config_support (config); | |
dc8acb97 MS |
2270 | } |
2271 | ||
5a2468f5 | 2272 | static void |
444abaca DJ |
2273 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2274 | struct cmd_list_element *c, | |
2275 | const char *value) | |
5a2468f5 | 2276 | { |
444abaca | 2277 | struct packet_config *packet; |
1d7fe7f0 | 2278 | gdb_assert (c->var.has_value ()); |
5a2468f5 | 2279 | |
444abaca DJ |
2280 | for (packet = remote_protocol_packets; |
2281 | packet < &remote_protocol_packets[PACKET_MAX]; | |
2282 | packet++) | |
2283 | { | |
fcef6471 | 2284 | if (c == packet->show_cmd) |
444abaca DJ |
2285 | { |
2286 | show_packet_config_cmd (packet); | |
2287 | return; | |
2288 | } | |
2289 | } | |
9b20d036 | 2290 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 2291 | c->name); |
5a2468f5 JM |
2292 | } |
2293 | ||
d471ea57 AC |
2294 | /* Should we try one of the 'Z' requests? */ |
2295 | ||
2296 | enum Z_packet_type | |
2297 | { | |
2298 | Z_PACKET_SOFTWARE_BP, | |
2299 | Z_PACKET_HARDWARE_BP, | |
2300 | Z_PACKET_WRITE_WP, | |
2301 | Z_PACKET_READ_WP, | |
2302 | Z_PACKET_ACCESS_WP, | |
2303 | NR_Z_PACKET_TYPES | |
2304 | }; | |
96baa820 | 2305 | |
d471ea57 | 2306 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2307 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2308 | |
7f19b9a2 | 2309 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2310 | |
2311 | static void | |
eb4c3f4a | 2312 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2313 | struct cmd_list_element *c) |
96baa820 | 2314 | { |
d471ea57 | 2315 | int i; |
a744cf53 | 2316 | |
d471ea57 | 2317 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 2318 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
2319 | } |
2320 | ||
2321 | static void | |
08546159 AC |
2322 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2323 | struct cmd_list_element *c, | |
2324 | const char *value) | |
96baa820 | 2325 | { |
d471ea57 | 2326 | int i; |
a744cf53 | 2327 | |
d471ea57 AC |
2328 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2329 | { | |
444abaca | 2330 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 2331 | } |
96baa820 JM |
2332 | } |
2333 | ||
4082afcc PA |
2334 | /* Returns true if the multi-process extensions are in effect. */ |
2335 | ||
2336 | static int | |
2337 | remote_multi_process_p (struct remote_state *rs) | |
2338 | { | |
2339 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
2340 | } | |
2341 | ||
de0d863e DB |
2342 | /* Returns true if fork events are supported. */ |
2343 | ||
2344 | static int | |
2345 | remote_fork_event_p (struct remote_state *rs) | |
2346 | { | |
2347 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
2348 | } | |
2349 | ||
c269dbdb DB |
2350 | /* Returns true if vfork events are supported. */ |
2351 | ||
2352 | static int | |
2353 | remote_vfork_event_p (struct remote_state *rs) | |
2354 | { | |
2355 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
2356 | } | |
2357 | ||
d46addbb DB |
2358 | /* Returns true if exec events are supported. */ |
2359 | ||
2360 | static int | |
2361 | remote_exec_event_p (struct remote_state *rs) | |
2362 | { | |
2363 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
2364 | } | |
2365 | ||
2c2e7f87 LM |
2366 | /* Returns true if memory tagging is supported, false otherwise. */ |
2367 | ||
2368 | static bool | |
2369 | remote_memory_tagging_p () | |
2370 | { | |
2371 | return packet_support (PACKET_memory_tagging_feature) == PACKET_ENABLE; | |
2372 | } | |
2373 | ||
cbb8991c DB |
2374 | /* Insert fork catchpoint target routine. If fork events are enabled |
2375 | then return success, nothing more to do. */ | |
2376 | ||
f6ac5f3d PA |
2377 | int |
2378 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
2379 | { |
2380 | struct remote_state *rs = get_remote_state (); | |
2381 | ||
2382 | return !remote_fork_event_p (rs); | |
2383 | } | |
2384 | ||
2385 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2386 | return success. */ | |
2387 | ||
f6ac5f3d PA |
2388 | int |
2389 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2390 | { |
2391 | return 0; | |
2392 | } | |
2393 | ||
2394 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2395 | then return success, nothing more to do. */ | |
2396 | ||
f6ac5f3d PA |
2397 | int |
2398 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
2399 | { |
2400 | struct remote_state *rs = get_remote_state (); | |
2401 | ||
2402 | return !remote_vfork_event_p (rs); | |
2403 | } | |
2404 | ||
2405 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2406 | return success. */ | |
2407 | ||
f6ac5f3d PA |
2408 | int |
2409 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2410 | { |
2411 | return 0; | |
2412 | } | |
2413 | ||
d46addbb DB |
2414 | /* Insert exec catchpoint target routine. If exec events are |
2415 | enabled, just return success. */ | |
2416 | ||
f6ac5f3d PA |
2417 | int |
2418 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
2419 | { |
2420 | struct remote_state *rs = get_remote_state (); | |
2421 | ||
2422 | return !remote_exec_event_p (rs); | |
2423 | } | |
2424 | ||
2425 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2426 | return success. */ | |
2427 | ||
f6ac5f3d PA |
2428 | int |
2429 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2430 | { |
2431 | return 0; | |
2432 | } | |
2433 | ||
c906108c SS |
2434 | \f |
2435 | ||
ffdd69cf TT |
2436 | /* Take advantage of the fact that the TID field is not used, to tag |
2437 | special ptids with it set to != 0. */ | |
2438 | static const ptid_t magic_null_ptid (42000, -1, 1); | |
2439 | static const ptid_t not_sent_ptid (42000, -2, 1); | |
2440 | static const ptid_t any_thread_ptid (42000, 0, 1); | |
79d7f229 | 2441 | |
0b16c5cf PA |
2442 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2443 | detach instead of killing it when bailing out). */ | |
2444 | ||
6b8edb51 PA |
2445 | int |
2446 | remote_target::remote_query_attached (int pid) | |
0b16c5cf PA |
2447 | { |
2448 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2449 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2450 | |
4082afcc | 2451 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2452 | return 0; |
2453 | ||
2454 | if (remote_multi_process_p (rs)) | |
8d64371b | 2455 | xsnprintf (rs->buf.data (), size, "qAttached:%x", pid); |
0b16c5cf | 2456 | else |
8d64371b | 2457 | xsnprintf (rs->buf.data (), size, "qAttached"); |
0b16c5cf PA |
2458 | |
2459 | putpkt (rs->buf); | |
8d64371b | 2460 | getpkt (&rs->buf, 0); |
0b16c5cf PA |
2461 | |
2462 | switch (packet_ok (rs->buf, | |
1554e9be | 2463 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
2464 | { |
2465 | case PACKET_OK: | |
8d64371b | 2466 | if (strcmp (rs->buf.data (), "1") == 0) |
0b16c5cf PA |
2467 | return 1; |
2468 | break; | |
2469 | case PACKET_ERROR: | |
8d64371b | 2470 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
0b16c5cf PA |
2471 | break; |
2472 | case PACKET_UNKNOWN: | |
2473 | break; | |
2474 | } | |
2475 | ||
2476 | return 0; | |
2477 | } | |
2478 | ||
49c62f2e PA |
2479 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2480 | has been invented by GDB, instead of reported by the target. Since | |
2481 | we can be connected to a remote system before before knowing about | |
2482 | any inferior, mark the target with execution when we find the first | |
2483 | inferior. If ATTACHED is 1, then we had just attached to this | |
2484 | inferior. If it is 0, then we just created this inferior. If it | |
2485 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2486 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2487 | attempt to open this inferior's executable as the main executable | |
2488 | if no main executable is open already. */ | |
1941c569 | 2489 | |
6b8edb51 | 2490 | inferior * |
9ab8741a | 2491 | remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 | 2492 | int try_open_exec) |
1941c569 | 2493 | { |
1941c569 PA |
2494 | struct inferior *inf; |
2495 | ||
0b16c5cf PA |
2496 | /* Check whether this process we're learning about is to be |
2497 | considered attached, or if is to be considered to have been | |
2498 | spawned by the stub. */ | |
2499 | if (attached == -1) | |
2500 | attached = remote_query_attached (pid); | |
2501 | ||
f5656ead | 2502 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2503 | { |
2504 | /* If the target shares code across all inferiors, then every | |
2505 | attach adds a new inferior. */ | |
2506 | inf = add_inferior (pid); | |
2507 | ||
2508 | /* ... and every inferior is bound to the same program space. | |
2509 | However, each inferior may still have its own address | |
2510 | space. */ | |
2511 | inf->aspace = maybe_new_address_space (); | |
2512 | inf->pspace = current_program_space; | |
2513 | } | |
2514 | else | |
2515 | { | |
2516 | /* In the traditional debugging scenario, there's a 1-1 match | |
2517 | between program/address spaces. We simply bind the inferior | |
2518 | to the program space's address space. */ | |
2519 | inf = current_inferior (); | |
78f2c40a PA |
2520 | |
2521 | /* However, if the current inferior is already bound to a | |
2522 | process, find some other empty inferior. */ | |
2523 | if (inf->pid != 0) | |
2524 | { | |
2525 | inf = nullptr; | |
2526 | for (inferior *it : all_inferiors ()) | |
2527 | if (it->pid == 0) | |
2528 | { | |
2529 | inf = it; | |
2530 | break; | |
2531 | } | |
2532 | } | |
2533 | if (inf == nullptr) | |
2534 | { | |
2535 | /* Since all inferiors were already bound to a process, add | |
2536 | a new inferior. */ | |
2537 | inf = add_inferior_with_spaces (); | |
2538 | } | |
2539 | switch_to_inferior_no_thread (inf); | |
02980c56 | 2540 | inf->push_target (this); |
6c95b8df PA |
2541 | inferior_appeared (inf, pid); |
2542 | } | |
1941c569 | 2543 | |
0b16c5cf | 2544 | inf->attach_flag = attached; |
49c62f2e | 2545 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2546 | |
1b6e6f5c GB |
2547 | /* If no main executable is currently open then attempt to |
2548 | open the file that was executed to create this inferior. */ | |
835205d0 | 2549 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2550 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2551 | |
a2fedca9 PW |
2552 | /* Check for exec file mismatch, and let the user solve it. */ |
2553 | validate_exec_file (1); | |
2554 | ||
1941c569 PA |
2555 | return inf; |
2556 | } | |
2557 | ||
7aabaf9d | 2558 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
5b6d1e4f PA |
2559 | static remote_thread_info *get_remote_thread_info (remote_target *target, |
2560 | ptid_t ptid); | |
85ad3aaf | 2561 | |
1941c569 PA |
2562 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
2563 | according to RUNNING. */ | |
2564 | ||
00431a78 | 2565 | thread_info * |
6b8edb51 | 2566 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing) |
c906108c | 2567 | { |
b7ea362b | 2568 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2569 | struct thread_info *thread; |
b7ea362b PA |
2570 | |
2571 | /* GDB historically didn't pull threads in the initial connection | |
2572 | setup. If the remote target doesn't even have a concept of | |
2573 | threads (e.g., a bare-metal target), even if internally we | |
2574 | consider that a single-threaded target, mentioning a new thread | |
2575 | might be confusing to the user. Be silent then, preserving the | |
2576 | age old behavior. */ | |
2577 | if (rs->starting_up) | |
5b6d1e4f | 2578 | thread = add_thread_silent (this, ptid); |
b7ea362b | 2579 | else |
5b6d1e4f | 2580 | thread = add_thread (this, ptid); |
1941c569 | 2581 | |
c9d22089 SM |
2582 | /* We start by assuming threads are resumed. That state then gets updated |
2583 | when we process a matching stop reply. */ | |
2584 | get_remote_thread_info (thread)->set_resumed (); | |
2585 | ||
5b6d1e4f PA |
2586 | set_executing (this, ptid, executing); |
2587 | set_running (this, ptid, running); | |
00431a78 PA |
2588 | |
2589 | return thread; | |
1941c569 PA |
2590 | } |
2591 | ||
2592 | /* Come here when we learn about a thread id from the remote target. | |
2593 | It may be the first time we hear about such thread, so take the | |
2594 | opportunity to add it to GDB's thread list. In case this is the | |
2595 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2596 | GDB's inferior list as well. EXECUTING indicates whether the |
2597 | thread is (internally) executing or stopped. */ | |
1941c569 | 2598 | |
6b8edb51 | 2599 | void |
8a82de58 | 2600 | remote_target::remote_notice_new_inferior (ptid_t currthread, bool executing) |
1941c569 | 2601 | { |
0d5b594f PA |
2602 | /* In non-stop mode, we assume new found threads are (externally) |
2603 | running until proven otherwise with a stop reply. In all-stop, | |
2604 | we can only get here if all threads are stopped. */ | |
8a82de58 | 2605 | bool running = target_is_non_stop_p (); |
0d5b594f | 2606 | |
c906108c SS |
2607 | /* If this is a new thread, add it to GDB's thread list. |
2608 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 | 2609 | |
5b6d1e4f | 2610 | thread_info *tp = find_thread_ptid (this, currthread); |
00431a78 | 2611 | if (tp != NULL && tp->state == THREAD_EXITED) |
82f73884 PA |
2612 | { |
2613 | /* We're seeing an event on a thread id we knew had exited. | |
2614 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 2615 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
2616 | return; |
2617 | } | |
2618 | ||
5b6d1e4f | 2619 | if (!in_thread_list (this, currthread)) |
c0a2216e | 2620 | { |
1941c569 | 2621 | struct inferior *inf = NULL; |
e99b03dc | 2622 | int pid = currthread.pid (); |
1941c569 | 2623 | |
0e998d96 | 2624 | if (inferior_ptid.is_pid () |
e99b03dc | 2625 | && pid == inferior_ptid.pid ()) |
c0a2216e PA |
2626 | { |
2627 | /* inferior_ptid has no thread member yet. This can happen | |
2628 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2629 | stub doesn't support qC. This is the first stop reported | |
2630 | after an attach, so this is the main thread. Update the | |
2631 | ptid in the thread list. */ | |
5b6d1e4f PA |
2632 | if (in_thread_list (this, ptid_t (pid))) |
2633 | thread_change_ptid (this, inferior_ptid, currthread); | |
bad34192 PA |
2634 | else |
2635 | { | |
0ac55310 PA |
2636 | thread_info *thr |
2637 | = remote_add_thread (currthread, running, executing); | |
2638 | switch_to_thread (thr); | |
bad34192 | 2639 | } |
dc146f7c | 2640 | return; |
c0a2216e | 2641 | } |
82f73884 | 2642 | |
d7e15655 | 2643 | if (magic_null_ptid == inferior_ptid) |
c0a2216e PA |
2644 | { |
2645 | /* inferior_ptid is not set yet. This can happen with the | |
2646 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2647 | doesn't support qC. This is the first stop reported | |
2648 | after an attach, so this is the main thread. Update the | |
2649 | ptid in the thread list. */ | |
5b6d1e4f | 2650 | thread_change_ptid (this, inferior_ptid, currthread); |
82f73884 | 2651 | return; |
c0a2216e | 2652 | } |
82f73884 | 2653 | |
29c87f7f PA |
2654 | /* When connecting to a target remote, or to a target |
2655 | extended-remote which already was debugging an inferior, we | |
2656 | may not know about it yet. Add it before adding its child | |
2657 | thread, so notifications are emitted in a sensible order. */ | |
5b6d1e4f | 2658 | if (find_inferior_pid (this, currthread.pid ()) == NULL) |
49c62f2e PA |
2659 | { |
2660 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 2661 | bool fake_pid_p = !remote_multi_process_p (rs); |
49c62f2e PA |
2662 | |
2663 | inf = remote_add_inferior (fake_pid_p, | |
e99b03dc | 2664 | currthread.pid (), -1, 1); |
49c62f2e | 2665 | } |
29c87f7f | 2666 | |
82f73884 | 2667 | /* This is really a new thread. Add it. */ |
00431a78 PA |
2668 | thread_info *new_thr |
2669 | = remote_add_thread (currthread, running, executing); | |
1941c569 PA |
2670 | |
2671 | /* If we found a new inferior, let the common code do whatever | |
2672 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2673 | breakpoints), unless we're just setting up an all-stop |
2674 | connection. */ | |
1941c569 | 2675 | if (inf != NULL) |
b7ea362b PA |
2676 | { |
2677 | struct remote_state *rs = get_remote_state (); | |
2678 | ||
6efcd9a8 | 2679 | if (!rs->starting_up) |
00431a78 | 2680 | notice_new_inferior (new_thr, executing, 0); |
b7ea362b | 2681 | } |
c0a2216e | 2682 | } |
c906108c SS |
2683 | } |
2684 | ||
85ad3aaf | 2685 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2686 | |
7aabaf9d SM |
2687 | static remote_thread_info * |
2688 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2689 | { |
85ad3aaf | 2690 | gdb_assert (thread != NULL); |
dc146f7c | 2691 | |
85ad3aaf | 2692 | if (thread->priv == NULL) |
7aabaf9d | 2693 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2694 | |
7aabaf9d | 2695 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2696 | } |
2697 | ||
5b6d1e4f PA |
2698 | /* Return PTID's private thread data, creating it if necessary. */ |
2699 | ||
7aabaf9d | 2700 | static remote_thread_info * |
5b6d1e4f | 2701 | get_remote_thread_info (remote_target *target, ptid_t ptid) |
85ad3aaf | 2702 | { |
5b6d1e4f | 2703 | thread_info *thr = find_thread_ptid (target, ptid); |
00431a78 | 2704 | return get_remote_thread_info (thr); |
dc146f7c VP |
2705 | } |
2706 | ||
74531fed PA |
2707 | /* Call this function as a result of |
2708 | 1) A halt indication (T packet) containing a thread id | |
2709 | 2) A direct query of currthread | |
0df8b418 | 2710 | 3) Successful execution of set thread */ |
74531fed PA |
2711 | |
2712 | static void | |
47f8a51d | 2713 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2714 | { |
47f8a51d | 2715 | rs->general_thread = currthread; |
74531fed PA |
2716 | } |
2717 | ||
89be2091 DJ |
2718 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2719 | it can simply pass through to the inferior without reporting. */ | |
2720 | ||
f6ac5f3d | 2721 | void |
adc6a863 | 2722 | remote_target::pass_signals (gdb::array_view<const unsigned char> pass_signals) |
89be2091 | 2723 | { |
4082afcc | 2724 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2725 | { |
2726 | char *pass_packet, *p; | |
adc6a863 | 2727 | int count = 0; |
747dc59d | 2728 | struct remote_state *rs = get_remote_state (); |
89be2091 | 2729 | |
adc6a863 PA |
2730 | gdb_assert (pass_signals.size () < 256); |
2731 | for (size_t i = 0; i < pass_signals.size (); i++) | |
89be2091 | 2732 | { |
2455069d | 2733 | if (pass_signals[i]) |
89be2091 DJ |
2734 | count++; |
2735 | } | |
224c3ddb | 2736 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2737 | strcpy (pass_packet, "QPassSignals:"); |
2738 | p = pass_packet + strlen (pass_packet); | |
adc6a863 | 2739 | for (size_t i = 0; i < pass_signals.size (); i++) |
89be2091 | 2740 | { |
2455069d | 2741 | if (pass_signals[i]) |
89be2091 DJ |
2742 | { |
2743 | if (i >= 16) | |
2744 | *p++ = tohex (i >> 4); | |
2745 | *p++ = tohex (i & 15); | |
2746 | if (count) | |
2747 | *p++ = ';'; | |
2748 | else | |
2749 | break; | |
2750 | count--; | |
2751 | } | |
2752 | } | |
2753 | *p = 0; | |
747dc59d | 2754 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2755 | { |
89be2091 | 2756 | putpkt (pass_packet); |
8d64371b | 2757 | getpkt (&rs->buf, 0); |
8dc5b319 | 2758 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
84d53fa9 | 2759 | xfree (rs->last_pass_packet); |
747dc59d | 2760 | rs->last_pass_packet = pass_packet; |
89be2091 DJ |
2761 | } |
2762 | else | |
2763 | xfree (pass_packet); | |
2764 | } | |
2765 | } | |
2766 | ||
82075af2 JS |
2767 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2768 | to report syscalls to GDB. */ | |
2769 | ||
f6ac5f3d PA |
2770 | int |
2771 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2772 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2773 | { |
b80406ac | 2774 | const char *catch_packet; |
82075af2 JS |
2775 | enum packet_result result; |
2776 | int n_sysno = 0; | |
2777 | ||
2778 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2779 | { | |
2780 | /* Not supported. */ | |
2781 | return 1; | |
2782 | } | |
2783 | ||
649a140c | 2784 | if (needed && any_count == 0) |
82075af2 | 2785 | { |
649a140c PA |
2786 | /* Count how many syscalls are to be caught. */ |
2787 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2788 | { |
649a140c | 2789 | if (syscall_counts[i] != 0) |
82075af2 JS |
2790 | n_sysno++; |
2791 | } | |
2792 | } | |
2793 | ||
2189c312 SM |
2794 | remote_debug_printf ("pid %d needed %d any_count %d n_sysno %d", |
2795 | pid, needed, any_count, n_sysno); | |
82075af2 | 2796 | |
1b81856f | 2797 | std::string built_packet; |
82075af2 JS |
2798 | if (needed) |
2799 | { | |
2800 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2801 | characters for a sysno. If the resulting packet size is too | |
2802 | big, fallback on the non-selective packet. */ | |
2803 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2804 | built_packet.reserve (maxpktsz); |
2805 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2806 | if (any_count == 0) |
82075af2 | 2807 | { |
649a140c PA |
2808 | /* Add in each syscall to be caught. */ |
2809 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2810 | { |
649a140c PA |
2811 | if (syscall_counts[i] != 0) |
2812 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2813 | } |
2814 | } | |
1b81856f | 2815 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2816 | { |
2817 | /* catch_packet too big. Fallback to less efficient | |
2818 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2819 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2820 | } |
b80406ac | 2821 | else |
1b81856f | 2822 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2823 | } |
2824 | else | |
b80406ac | 2825 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2826 | |
b80406ac | 2827 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2828 | |
b80406ac | 2829 | putpkt (catch_packet); |
8d64371b | 2830 | getpkt (&rs->buf, 0); |
b80406ac TT |
2831 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); |
2832 | if (result == PACKET_OK) | |
2833 | return 0; | |
2834 | else | |
2835 | return -1; | |
82075af2 JS |
2836 | } |
2837 | ||
9b224c5e PA |
2838 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2839 | signals it should pass through to the inferior when detaching. */ | |
2840 | ||
f6ac5f3d | 2841 | void |
adc6a863 | 2842 | remote_target::program_signals (gdb::array_view<const unsigned char> signals) |
9b224c5e | 2843 | { |
4082afcc | 2844 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2845 | { |
2846 | char *packet, *p; | |
adc6a863 | 2847 | int count = 0; |
5e4a05c4 | 2848 | struct remote_state *rs = get_remote_state (); |
9b224c5e | 2849 | |
adc6a863 PA |
2850 | gdb_assert (signals.size () < 256); |
2851 | for (size_t i = 0; i < signals.size (); i++) | |
9b224c5e PA |
2852 | { |
2853 | if (signals[i]) | |
2854 | count++; | |
2855 | } | |
224c3ddb | 2856 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2857 | strcpy (packet, "QProgramSignals:"); |
2858 | p = packet + strlen (packet); | |
adc6a863 | 2859 | for (size_t i = 0; i < signals.size (); i++) |
9b224c5e PA |
2860 | { |
2861 | if (signal_pass_state (i)) | |
2862 | { | |
2863 | if (i >= 16) | |
2864 | *p++ = tohex (i >> 4); | |
2865 | *p++ = tohex (i & 15); | |
2866 | if (count) | |
2867 | *p++ = ';'; | |
2868 | else | |
2869 | break; | |
2870 | count--; | |
2871 | } | |
2872 | } | |
2873 | *p = 0; | |
5e4a05c4 TT |
2874 | if (!rs->last_program_signals_packet |
2875 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2876 | { |
9b224c5e | 2877 | putpkt (packet); |
8d64371b | 2878 | getpkt (&rs->buf, 0); |
8dc5b319 | 2879 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2880 | xfree (rs->last_program_signals_packet); |
2881 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2882 | } |
2883 | else | |
2884 | xfree (packet); | |
2885 | } | |
2886 | } | |
2887 | ||
79d7f229 PA |
2888 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2889 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2890 | thread. If GEN is set, set the general thread, if not, then set | |
2891 | the step/continue thread. */ | |
6b8edb51 PA |
2892 | void |
2893 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 2894 | { |
d01949b6 | 2895 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2896 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
8d64371b TT |
2897 | char *buf = rs->buf.data (); |
2898 | char *endbuf = buf + get_remote_packet_size (); | |
c906108c | 2899 | |
d7e15655 | 2900 | if (state == ptid) |
c906108c SS |
2901 | return; |
2902 | ||
79d7f229 PA |
2903 | *buf++ = 'H'; |
2904 | *buf++ = gen ? 'g' : 'c'; | |
d7e15655 | 2905 | if (ptid == magic_null_ptid) |
79d7f229 | 2906 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2907 | else if (ptid == any_thread_ptid) |
79d7f229 | 2908 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2909 | else if (ptid == minus_one_ptid) |
79d7f229 PA |
2910 | xsnprintf (buf, endbuf - buf, "-1"); |
2911 | else | |
82f73884 | 2912 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2913 | putpkt (rs->buf); |
8d64371b | 2914 | getpkt (&rs->buf, 0); |
c906108c | 2915 | if (gen) |
47f8a51d | 2916 | rs->general_thread = ptid; |
c906108c | 2917 | else |
47f8a51d | 2918 | rs->continue_thread = ptid; |
c906108c | 2919 | } |
79d7f229 | 2920 | |
6b8edb51 PA |
2921 | void |
2922 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
2923 | { |
2924 | set_thread (ptid, 1); | |
2925 | } | |
2926 | ||
6b8edb51 PA |
2927 | void |
2928 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
2929 | { |
2930 | set_thread (ptid, 0); | |
2931 | } | |
2932 | ||
3c9c4b83 PA |
2933 | /* Change the remote current process. Which thread within the process |
2934 | ends up selected isn't important, as long as it is the same process | |
2935 | as what INFERIOR_PTID points to. | |
2936 | ||
2937 | This comes from that fact that there is no explicit notion of | |
2938 | "selected process" in the protocol. The selected process for | |
2939 | general operations is the process the selected general thread | |
2940 | belongs to. */ | |
2941 | ||
6b8edb51 PA |
2942 | void |
2943 | remote_target::set_general_process () | |
3c9c4b83 PA |
2944 | { |
2945 | struct remote_state *rs = get_remote_state (); | |
2946 | ||
2947 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2948 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2949 | return; |
2950 | ||
2951 | /* We only need to change the remote current thread if it's pointing | |
2952 | at some other process. */ | |
e99b03dc | 2953 | if (rs->general_thread.pid () != inferior_ptid.pid ()) |
3c9c4b83 PA |
2954 | set_general_thread (inferior_ptid); |
2955 | } | |
2956 | ||
c906108c | 2957 | \f |
7d1a114c PA |
2958 | /* Return nonzero if this is the main thread that we made up ourselves |
2959 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2960 | |
2961 | static int | |
f6ac5f3d | 2962 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2963 | { |
d7e15655 | 2964 | if (ptid == magic_null_ptid) |
c0a2216e PA |
2965 | /* The main thread is always alive. */ |
2966 | return 1; | |
2967 | ||
e38504b3 | 2968 | if (ptid.pid () != 0 && ptid.lwp () == 0) |
c0a2216e PA |
2969 | /* The main thread is always alive. This can happen after a |
2970 | vAttach, if the remote side doesn't support | |
2971 | multi-threading. */ | |
2972 | return 1; | |
2973 | ||
7d1a114c PA |
2974 | return 0; |
2975 | } | |
2976 | ||
2977 | /* Return nonzero if the thread PTID is still alive on the remote | |
2978 | system. */ | |
2979 | ||
57810aa7 | 2980 | bool |
f6ac5f3d | 2981 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
2982 | { |
2983 | struct remote_state *rs = get_remote_state (); | |
2984 | char *p, *endp; | |
2985 | ||
2986 | /* Check if this is a thread that we made up ourselves to model | |
2987 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2988 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2989 | return 1; |
2990 | ||
8d64371b TT |
2991 | p = rs->buf.data (); |
2992 | endp = p + get_remote_packet_size (); | |
82f73884 PA |
2993 | |
2994 | *p++ = 'T'; | |
2995 | write_ptid (p, endp, ptid); | |
2996 | ||
2e9f7625 | 2997 | putpkt (rs->buf); |
8d64371b | 2998 | getpkt (&rs->buf, 0); |
2e9f7625 | 2999 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
3000 | } |
3001 | ||
79efa585 SM |
3002 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
3003 | The thread_info object owns the memory for the name. */ | |
3004 | ||
f6ac5f3d PA |
3005 | const char * |
3006 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
3007 | { |
3008 | if (info->priv != NULL) | |
a9334058 SM |
3009 | { |
3010 | const std::string &name = get_remote_thread_info (info)->name; | |
3011 | return !name.empty () ? name.c_str () : NULL; | |
3012 | } | |
79efa585 SM |
3013 | |
3014 | return NULL; | |
3015 | } | |
3016 | ||
c906108c SS |
3017 | /* About these extended threadlist and threadinfo packets. They are |
3018 | variable length packets but, the fields within them are often fixed | |
30baf67b | 3019 | length. They are redundant enough to send over UDP as is the |
c906108c SS |
3020 | remote protocol in general. There is a matching unit test module |
3021 | in libstub. */ | |
3022 | ||
23860348 | 3023 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 3024 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 3025 | changable. */ |
cce74817 JM |
3026 | |
3027 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 3028 | Plan to fix this. */ |
cce74817 | 3029 | |
23860348 | 3030 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 3031 | |
9d1f7ab2 | 3032 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 3033 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
3034 | |
3035 | struct gdb_ext_thread_info | |
c5aa993b | 3036 | { |
23860348 | 3037 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 3038 | int active; /* Has state interesting to GDB? |
23860348 | 3039 | regs, stack. */ |
2bc416ba | 3040 | char display[256]; /* Brief state display, name, |
cedea757 | 3041 | blocked/suspended. */ |
23860348 | 3042 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 3043 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 3044 | whatever. */ |
c5aa993b | 3045 | }; |
cce74817 JM |
3046 | |
3047 | /* The volume of remote transfers can be limited by submitting | |
3048 | a mask containing bits specifying the desired information. | |
3049 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 3050 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
3051 | |
3052 | #define TAG_THREADID 1 | |
3053 | #define TAG_EXISTS 2 | |
3054 | #define TAG_DISPLAY 4 | |
3055 | #define TAG_THREADNAME 8 | |
c5aa993b | 3056 | #define TAG_MOREDISPLAY 16 |
cce74817 | 3057 | |
23860348 | 3058 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 3059 | |
cecb1912 | 3060 | static const char *unpack_nibble (const char *buf, int *val); |
cce74817 | 3061 | |
cecb1912 | 3062 | static const char *unpack_byte (const char *buf, int *value); |
cce74817 | 3063 | |
a14ed312 | 3064 | static char *pack_int (char *buf, int value); |
cce74817 | 3065 | |
cecb1912 | 3066 | static const char *unpack_int (const char *buf, int *value); |
cce74817 | 3067 | |
cecb1912 | 3068 | static const char *unpack_string (const char *src, char *dest, int length); |
cce74817 | 3069 | |
23860348 | 3070 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 3071 | |
cecb1912 | 3072 | static const char *unpack_threadid (const char *inbuf, threadref *id); |
cce74817 | 3073 | |
23860348 | 3074 | void int_to_threadref (threadref *id, int value); |
cce74817 | 3075 | |
23860348 | 3076 | static int threadref_to_int (threadref *ref); |
cce74817 | 3077 | |
23860348 | 3078 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 3079 | |
23860348 | 3080 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 3081 | |
2bc416ba | 3082 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 3083 | threadref *id); |
cce74817 | 3084 | |
a14ed312 KB |
3085 | static char *pack_threadlist_request (char *pkt, int startflag, |
3086 | int threadcount, | |
23860348 | 3087 | threadref *nextthread); |
cce74817 | 3088 | |
23860348 | 3089 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 3090 | |
82f73884 PA |
3091 | |
3092 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
3093 | buffer we're allowed to write to. Returns | |
3094 | BUF+CHARACTERS_WRITTEN. */ | |
3095 | ||
6b8edb51 PA |
3096 | char * |
3097 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
3098 | { |
3099 | int pid, tid; | |
3100 | struct remote_state *rs = get_remote_state (); | |
3101 | ||
3102 | if (remote_multi_process_p (rs)) | |
3103 | { | |
e99b03dc | 3104 | pid = ptid.pid (); |
82f73884 PA |
3105 | if (pid < 0) |
3106 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
3107 | else | |
3108 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
3109 | } | |
e38504b3 | 3110 | tid = ptid.lwp (); |
82f73884 PA |
3111 | if (tid < 0) |
3112 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
3113 | else | |
3114 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
3115 | ||
3116 | return buf; | |
3117 | } | |
3118 | ||
256642e8 PA |
3119 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
3120 | last parsed char. Returns null_ptid if no thread id is found, and | |
3121 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
3122 | |
3123 | static ptid_t | |
256642e8 | 3124 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 3125 | { |
256642e8 PA |
3126 | const char *p = buf; |
3127 | const char *pp; | |
82f73884 | 3128 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
3129 | |
3130 | if (*p == 'p') | |
3131 | { | |
3132 | /* Multi-process ptid. */ | |
3133 | pp = unpack_varlen_hex (p + 1, &pid); | |
3134 | if (*pp != '.') | |
b37520b6 | 3135 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
3136 | |
3137 | p = pp; | |
3138 | pp = unpack_varlen_hex (p + 1, &tid); | |
3139 | if (obuf) | |
3140 | *obuf = pp; | |
184ea2f7 | 3141 | return ptid_t (pid, tid); |
82f73884 PA |
3142 | } |
3143 | ||
3144 | /* No multi-process. Just a tid. */ | |
3145 | pp = unpack_varlen_hex (p, &tid); | |
3146 | ||
c9f35b34 KB |
3147 | /* Return null_ptid when no thread id is found. */ |
3148 | if (p == pp) | |
3149 | { | |
3150 | if (obuf) | |
3151 | *obuf = pp; | |
3152 | return null_ptid; | |
3153 | } | |
3154 | ||
82f73884 | 3155 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
3156 | what's in inferior_ptid, unless it's null at this point. If so, |
3157 | then since there's no way to know the pid of the reported | |
3158 | threads, use the magic number. */ | |
d7e15655 | 3159 | if (inferior_ptid == null_ptid) |
e99b03dc | 3160 | pid = magic_null_ptid.pid (); |
ca19bf23 | 3161 | else |
e99b03dc | 3162 | pid = inferior_ptid.pid (); |
82f73884 PA |
3163 | |
3164 | if (obuf) | |
3165 | *obuf = pp; | |
184ea2f7 | 3166 | return ptid_t (pid, tid); |
82f73884 PA |
3167 | } |
3168 | ||
c906108c | 3169 | static int |
fba45db2 | 3170 | stubhex (int ch) |
c906108c SS |
3171 | { |
3172 | if (ch >= 'a' && ch <= 'f') | |
3173 | return ch - 'a' + 10; | |
3174 | if (ch >= '0' && ch <= '9') | |
3175 | return ch - '0'; | |
3176 | if (ch >= 'A' && ch <= 'F') | |
3177 | return ch - 'A' + 10; | |
3178 | return -1; | |
3179 | } | |
3180 | ||
3181 | static int | |
cecb1912 | 3182 | stub_unpack_int (const char *buff, int fieldlength) |
c906108c SS |
3183 | { |
3184 | int nibble; | |
3185 | int retval = 0; | |
3186 | ||
3187 | while (fieldlength) | |
3188 | { | |
3189 | nibble = stubhex (*buff++); | |
3190 | retval |= nibble; | |
3191 | fieldlength--; | |
3192 | if (fieldlength) | |
3193 | retval = retval << 4; | |
3194 | } | |
3195 | return retval; | |
3196 | } | |
3197 | ||
cecb1912 SM |
3198 | static const char * |
3199 | unpack_nibble (const char *buf, int *val) | |
c906108c | 3200 | { |
b7589f7d | 3201 | *val = fromhex (*buf++); |
c906108c SS |
3202 | return buf; |
3203 | } | |
3204 | ||
cecb1912 SM |
3205 | static const char * |
3206 | unpack_byte (const char *buf, int *value) | |
c906108c SS |
3207 | { |
3208 | *value = stub_unpack_int (buf, 2); | |
3209 | return buf + 2; | |
3210 | } | |
3211 | ||
3212 | static char * | |
fba45db2 | 3213 | pack_int (char *buf, int value) |
c906108c SS |
3214 | { |
3215 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3216 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3217 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3218 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3219 | return buf; | |
3220 | } | |
3221 | ||
cecb1912 SM |
3222 | static const char * |
3223 | unpack_int (const char *buf, int *value) | |
c906108c SS |
3224 | { |
3225 | *value = stub_unpack_int (buf, 8); | |
3226 | return buf + 8; | |
3227 | } | |
3228 | ||
23860348 | 3229 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3230 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3231 | |
3232 | static char * | |
fba45db2 | 3233 | pack_string (char *pkt, char *string) |
c906108c SS |
3234 | { |
3235 | char ch; | |
3236 | int len; | |
3237 | ||
3238 | len = strlen (string); | |
3239 | if (len > 200) | |
23860348 | 3240 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3241 | pkt = pack_hex_byte (pkt, len); |
3242 | while (len-- > 0) | |
3243 | { | |
3244 | ch = *string++; | |
3245 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3246 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3247 | *pkt++ = ch; |
3248 | } | |
3249 | return pkt; | |
3250 | } | |
3251 | #endif /* 0 (unused) */ | |
3252 | ||
cecb1912 SM |
3253 | static const char * |
3254 | unpack_string (const char *src, char *dest, int length) | |
c906108c SS |
3255 | { |
3256 | while (length--) | |
3257 | *dest++ = *src++; | |
3258 | *dest = '\0'; | |
3259 | return src; | |
3260 | } | |
3261 | ||
3262 | static char * | |
fba45db2 | 3263 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3264 | { |
3265 | char *limit; | |
3266 | unsigned char *altid; | |
3267 | ||
3268 | altid = (unsigned char *) id; | |
3269 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3270 | while (pkt < limit) | |
3271 | pkt = pack_hex_byte (pkt, *altid++); | |
3272 | return pkt; | |
3273 | } | |
3274 | ||
3275 | ||
cecb1912 SM |
3276 | static const char * |
3277 | unpack_threadid (const char *inbuf, threadref *id) | |
c906108c SS |
3278 | { |
3279 | char *altref; | |
cecb1912 | 3280 | const char *limit = inbuf + BUF_THREAD_ID_SIZE; |
c906108c SS |
3281 | int x, y; |
3282 | ||
3283 | altref = (char *) id; | |
3284 | ||
3285 | while (inbuf < limit) | |
3286 | { | |
3287 | x = stubhex (*inbuf++); | |
3288 | y = stubhex (*inbuf++); | |
3289 | *altref++ = (x << 4) | y; | |
3290 | } | |
3291 | return inbuf; | |
3292 | } | |
3293 | ||
3294 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3295 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3296 | to use 64bit thread references internally. This is an adapter |
3297 | function. */ | |
3298 | ||
3299 | void | |
fba45db2 | 3300 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3301 | { |
3302 | unsigned char *scan; | |
3303 | ||
3304 | scan = (unsigned char *) id; | |
3305 | { | |
3306 | int i = 4; | |
3307 | while (i--) | |
3308 | *scan++ = 0; | |
3309 | } | |
3310 | *scan++ = (value >> 24) & 0xff; | |
3311 | *scan++ = (value >> 16) & 0xff; | |
3312 | *scan++ = (value >> 8) & 0xff; | |
3313 | *scan++ = (value & 0xff); | |
3314 | } | |
3315 | ||
3316 | static int | |
fba45db2 | 3317 | threadref_to_int (threadref *ref) |
c906108c SS |
3318 | { |
3319 | int i, value = 0; | |
3320 | unsigned char *scan; | |
3321 | ||
cfd77fa1 | 3322 | scan = *ref; |
c906108c SS |
3323 | scan += 4; |
3324 | i = 4; | |
3325 | while (i-- > 0) | |
3326 | value = (value << 8) | ((*scan++) & 0xff); | |
3327 | return value; | |
3328 | } | |
3329 | ||
3330 | static void | |
fba45db2 | 3331 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3332 | { |
3333 | int i; | |
3334 | unsigned char *csrc, *cdest; | |
3335 | ||
3336 | csrc = (unsigned char *) src; | |
3337 | cdest = (unsigned char *) dest; | |
3338 | i = 8; | |
3339 | while (i--) | |
3340 | *cdest++ = *csrc++; | |
3341 | } | |
3342 | ||
3343 | static int | |
fba45db2 | 3344 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3345 | { |
23860348 | 3346 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3347 | #if 0 |
3348 | unsigned char *srcp, *destp; | |
3349 | int i, result; | |
3350 | srcp = (char *) src; | |
3351 | destp = (char *) dest; | |
3352 | ||
3353 | result = 1; | |
3354 | while (i-- > 0) | |
3355 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3356 | return result; | |
3357 | #endif | |
3358 | return 1; | |
3359 | } | |
3360 | ||
3361 | /* | |
c5aa993b JM |
3362 | threadid:1, # always request threadid |
3363 | context_exists:2, | |
3364 | display:4, | |
3365 | unique_name:8, | |
3366 | more_display:16 | |
3367 | */ | |
c906108c SS |
3368 | |
3369 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3370 | ||
3371 | static char * | |
fba45db2 | 3372 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3373 | { |
23860348 MS |
3374 | *pkt++ = 'q'; /* Info Query */ |
3375 | *pkt++ = 'P'; /* process or thread info */ | |
3376 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3377 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3378 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3379 | return pkt; |
3380 | } | |
3381 | ||
23860348 | 3382 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3383 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3384 | add more fields as time goes by. */ |
c906108c | 3385 | |
23860348 | 3386 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3387 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3388 | fetch registers and its stack? */ |
c5aa993b | 3389 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3390 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3391 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3392 | the process. */ |
c906108c | 3393 | |
6b8edb51 | 3394 | int |
cecb1912 | 3395 | remote_target::remote_unpack_thread_info_response (const char *pkt, |
6b8edb51 PA |
3396 | threadref *expectedref, |
3397 | gdb_ext_thread_info *info) | |
c906108c | 3398 | { |
d01949b6 | 3399 | struct remote_state *rs = get_remote_state (); |
c906108c | 3400 | int mask, length; |
cfd77fa1 | 3401 | int tag; |
c906108c | 3402 | threadref ref; |
cecb1912 | 3403 | const char *limit = pkt + rs->buf.size (); /* Plausible parsing limit. */ |
c906108c SS |
3404 | int retval = 1; |
3405 | ||
23860348 | 3406 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3407 | info->active = 0; |
3408 | info->display[0] = '\0'; | |
3409 | info->shortname[0] = '\0'; | |
3410 | info->more_display[0] = '\0'; | |
3411 | ||
23860348 MS |
3412 | /* Assume the characters indicating the packet type have been |
3413 | stripped. */ | |
c906108c SS |
3414 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3415 | pkt = unpack_threadid (pkt, &ref); | |
3416 | ||
3417 | if (mask == 0) | |
8a3fe4f8 | 3418 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3419 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3420 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3421 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3422 | return 0; |
3423 | } | |
3424 | copy_threadref (&info->threadid, &ref); | |
3425 | ||
405feb71 | 3426 | /* Loop on tagged fields , try to bail if something goes wrong. */ |
c906108c | 3427 | |
23860348 MS |
3428 | /* Packets are terminated with nulls. */ |
3429 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3430 | { |
3431 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3432 | pkt = unpack_byte (pkt, &length); /* length */ |
3433 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3434 | { |
8a3fe4f8 | 3435 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3436 | retval = 0; |
3437 | break; | |
3438 | } | |
3439 | if (tag == TAG_THREADID) | |
3440 | { | |
3441 | if (length != 16) | |
3442 | { | |
8a3fe4f8 | 3443 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3444 | retval = 0; |
3445 | break; | |
3446 | } | |
3447 | pkt = unpack_threadid (pkt, &ref); | |
3448 | mask = mask & ~TAG_THREADID; | |
3449 | continue; | |
3450 | } | |
3451 | if (tag == TAG_EXISTS) | |
3452 | { | |
3453 | info->active = stub_unpack_int (pkt, length); | |
3454 | pkt += length; | |
3455 | mask = mask & ~(TAG_EXISTS); | |
3456 | if (length > 8) | |
3457 | { | |
8a3fe4f8 | 3458 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3459 | retval = 0; |
3460 | break; | |
3461 | } | |
3462 | continue; | |
3463 | } | |
3464 | if (tag == TAG_THREADNAME) | |
3465 | { | |
3466 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3467 | mask = mask & ~TAG_THREADNAME; | |
3468 | continue; | |
3469 | } | |
3470 | if (tag == TAG_DISPLAY) | |
3471 | { | |
3472 | pkt = unpack_string (pkt, &info->display[0], length); | |
3473 | mask = mask & ~TAG_DISPLAY; | |
3474 | continue; | |
3475 | } | |
3476 | if (tag == TAG_MOREDISPLAY) | |
3477 | { | |
3478 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3479 | mask = mask & ~TAG_MOREDISPLAY; | |
3480 | continue; | |
3481 | } | |
8a3fe4f8 | 3482 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3483 | break; /* Not a tag we know about. */ |
c906108c SS |
3484 | } |
3485 | return retval; | |
3486 | } | |
3487 | ||
6b8edb51 PA |
3488 | int |
3489 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3490 | int fieldset, | |
3491 | gdb_ext_thread_info *info) | |
c906108c | 3492 | { |
d01949b6 | 3493 | struct remote_state *rs = get_remote_state (); |
c906108c | 3494 | int result; |
c906108c | 3495 | |
8d64371b | 3496 | pack_threadinfo_request (rs->buf.data (), fieldset, threadid); |
2e9f7625 | 3497 | putpkt (rs->buf); |
8d64371b | 3498 | getpkt (&rs->buf, 0); |
3084dd77 PA |
3499 | |
3500 | if (rs->buf[0] == '\0') | |
3501 | return 0; | |
3502 | ||
8d64371b | 3503 | result = remote_unpack_thread_info_response (&rs->buf[2], |
23860348 | 3504 | threadid, info); |
c906108c SS |
3505 | return result; |
3506 | } | |
3507 | ||
c906108c SS |
3508 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3509 | ||
3510 | static char * | |
fba45db2 KB |
3511 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3512 | threadref *nextthread) | |
c906108c SS |
3513 | { |
3514 | *pkt++ = 'q'; /* info query packet */ | |
3515 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3516 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3517 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3518 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3519 | *pkt = '\0'; | |
3520 | return pkt; | |
3521 | } | |
3522 | ||
3523 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3524 | ||
6b8edb51 | 3525 | int |
cecb1912 | 3526 | remote_target::parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
3527 | threadref *original_echo, |
3528 | threadref *resultlist, | |
3529 | int *doneflag) | |
c906108c | 3530 | { |
d01949b6 | 3531 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3532 | int count, resultcount, done; |
3533 | ||
3534 | resultcount = 0; | |
3535 | /* Assume the 'q' and 'M chars have been stripped. */ | |
cecb1912 | 3536 | const char *limit = pkt + (rs->buf.size () - BUF_THREAD_ID_SIZE); |
23860348 | 3537 | /* done parse past here */ |
c906108c SS |
3538 | pkt = unpack_byte (pkt, &count); /* count field */ |
3539 | pkt = unpack_nibble (pkt, &done); | |
3540 | /* The first threadid is the argument threadid. */ | |
3541 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3542 | while ((count-- > 0) && (pkt < limit)) | |
3543 | { | |
3544 | pkt = unpack_threadid (pkt, resultlist++); | |
3545 | if (resultcount++ >= result_limit) | |
3546 | break; | |
3547 | } | |
3548 | if (doneflag) | |
3549 | *doneflag = done; | |
3550 | return resultcount; | |
3551 | } | |
3552 | ||
6dc54d91 PA |
3553 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3554 | qL packet is not supported, 0 on error and 1 on success. */ | |
3555 | ||
6b8edb51 PA |
3556 | int |
3557 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3558 | int result_limit, int *done, int *result_count, | |
3559 | threadref *threadlist) | |
c906108c | 3560 | { |
d01949b6 | 3561 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3562 | int result = 1; |
3563 | ||
405feb71 | 3564 | /* Truncate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3565 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3566 | >= get_remote_packet_size ()) | |
ea9c271d | 3567 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3568 | |
8d64371b TT |
3569 | pack_threadlist_request (rs->buf.data (), startflag, result_limit, |
3570 | nextthread); | |
6d820c5c | 3571 | putpkt (rs->buf); |
8d64371b TT |
3572 | getpkt (&rs->buf, 0); |
3573 | if (rs->buf[0] == '\0') | |
6dc54d91 PA |
3574 | { |
3575 | /* Packet not supported. */ | |
3576 | return -1; | |
3577 | } | |
3578 | ||
3579 | *result_count = | |
8d64371b | 3580 | parse_threadlist_response (&rs->buf[2], result_limit, |
6dc54d91 | 3581 | &rs->echo_nextthread, threadlist, done); |
c906108c | 3582 | |
0d031856 | 3583 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3584 | { |
23860348 | 3585 | /* FIXME: This is a good reason to drop the packet. */ |
405feb71 TV |
3586 | /* Possibly, there is a duplicate response. */ |
3587 | /* Possibilities : | |
dda83cd7 SM |
3588 | retransmit immediatly - race conditions |
3589 | retransmit after timeout - yes | |
3590 | exit | |
3591 | wait for packet, then exit | |
c906108c | 3592 | */ |
8a3fe4f8 | 3593 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3594 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3595 | } |
3596 | if (*result_count <= 0) | |
3597 | { | |
3598 | if (*done != 1) | |
3599 | { | |
8a3fe4f8 | 3600 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3601 | result = 0; |
3602 | } | |
3603 | return result; /* break; */ | |
3604 | } | |
3605 | if (*result_count > result_limit) | |
3606 | { | |
3607 | *result_count = 0; | |
8a3fe4f8 | 3608 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3609 | return 0; |
3610 | } | |
3611 | return result; | |
3612 | } | |
3613 | ||
6dc54d91 PA |
3614 | /* Fetch the list of remote threads, with the qL packet, and call |
3615 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3616 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3617 | STEPFUNCTION returns false. If the packet is not supported, | |
3618 | returns -1. */ | |
c906108c | 3619 | |
6b8edb51 PA |
3620 | int |
3621 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3622 | void *context, int looplimit) | |
c906108c | 3623 | { |
0d031856 | 3624 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3625 | int done, i, result_count; |
3626 | int startflag = 1; | |
3627 | int result = 1; | |
3628 | int loopcount = 0; | |
c906108c SS |
3629 | |
3630 | done = 0; | |
3631 | while (!done) | |
3632 | { | |
3633 | if (loopcount++ > looplimit) | |
3634 | { | |
3635 | result = 0; | |
8a3fe4f8 | 3636 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3637 | break; |
3638 | } | |
6dc54d91 PA |
3639 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3640 | MAXTHREADLISTRESULTS, | |
3641 | &done, &result_count, | |
3642 | rs->resultthreadlist); | |
3643 | if (result <= 0) | |
3644 | break; | |
23860348 | 3645 | /* Clear for later iterations. */ |
c906108c SS |
3646 | startflag = 0; |
3647 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3648 | if (result_count >= 1) | |
0d031856 TT |
3649 | copy_threadref (&rs->nextthread, |
3650 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3651 | i = 0; |
3652 | while (result_count--) | |
6dc54d91 PA |
3653 | { |
3654 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3655 | { | |
3656 | result = 0; | |
3657 | break; | |
3658 | } | |
3659 | } | |
c906108c SS |
3660 | } |
3661 | return result; | |
3662 | } | |
3663 | ||
6dc54d91 PA |
3664 | /* A thread found on the remote target. */ |
3665 | ||
21fe1c75 | 3666 | struct thread_item |
6dc54d91 | 3667 | { |
21fe1c75 SM |
3668 | explicit thread_item (ptid_t ptid_) |
3669 | : ptid (ptid_) | |
3670 | {} | |
3671 | ||
3672 | thread_item (thread_item &&other) = default; | |
3673 | thread_item &operator= (thread_item &&other) = default; | |
3674 | ||
3675 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3676 | ||
6dc54d91 PA |
3677 | /* The thread's PTID. */ |
3678 | ptid_t ptid; | |
3679 | ||
21fe1c75 SM |
3680 | /* The thread's extra info. */ |
3681 | std::string extra; | |
6dc54d91 | 3682 | |
21fe1c75 SM |
3683 | /* The thread's name. */ |
3684 | std::string name; | |
79efa585 | 3685 | |
6dc54d91 | 3686 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3687 | int core = -1; |
f6327dcb KB |
3688 | |
3689 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3690 | gdb::byte_vector thread_handle; |
21fe1c75 | 3691 | }; |
6dc54d91 PA |
3692 | |
3693 | /* Context passed around to the various methods listing remote | |
3694 | threads. As new threads are found, they're added to the ITEMS | |
3695 | vector. */ | |
3696 | ||
3697 | struct threads_listing_context | |
3698 | { | |
21fe1c75 SM |
3699 | /* Return true if this object contains an entry for a thread with ptid |
3700 | PTID. */ | |
6dc54d91 | 3701 | |
21fe1c75 SM |
3702 | bool contains_thread (ptid_t ptid) const |
3703 | { | |
3704 | auto match_ptid = [&] (const thread_item &item) | |
3705 | { | |
3706 | return item.ptid == ptid; | |
3707 | }; | |
80134cf5 | 3708 | |
21fe1c75 SM |
3709 | auto it = std::find_if (this->items.begin (), |
3710 | this->items.end (), | |
3711 | match_ptid); | |
80134cf5 | 3712 | |
21fe1c75 SM |
3713 | return it != this->items.end (); |
3714 | } | |
80134cf5 | 3715 | |
21fe1c75 | 3716 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3717 | |
21fe1c75 SM |
3718 | void remove_thread (ptid_t ptid) |
3719 | { | |
3720 | auto match_ptid = [&] (const thread_item &item) | |
3721 | { | |
dda83cd7 | 3722 | return item.ptid == ptid; |
21fe1c75 | 3723 | }; |
cbb8991c | 3724 | |
21fe1c75 SM |
3725 | auto it = std::remove_if (this->items.begin (), |
3726 | this->items.end (), | |
3727 | match_ptid); | |
cbb8991c | 3728 | |
21fe1c75 SM |
3729 | if (it != this->items.end ()) |
3730 | this->items.erase (it); | |
3731 | } | |
3732 | ||
3733 | /* The threads found on the remote target. */ | |
3734 | std::vector<thread_item> items; | |
3735 | }; | |
cbb8991c | 3736 | |
c906108c | 3737 | static int |
6dc54d91 | 3738 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3739 | { |
19ba03f4 SM |
3740 | struct threads_listing_context *context |
3741 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3742 | int pid = inferior_ptid.pid (); |
3743 | int lwp = threadref_to_int (ref); | |
3744 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3745 | |
21fe1c75 | 3746 | context->items.emplace_back (ptid); |
6dc54d91 | 3747 | |
c906108c SS |
3748 | return 1; /* continue iterator */ |
3749 | } | |
3750 | ||
3751 | #define CRAZY_MAX_THREADS 1000 | |
3752 | ||
6b8edb51 PA |
3753 | ptid_t |
3754 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3755 | { |
d01949b6 | 3756 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3757 | |
3758 | putpkt ("qC"); | |
8d64371b | 3759 | getpkt (&rs->buf, 0); |
2e9f7625 | 3760 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3761 | { |
256642e8 | 3762 | const char *obuf; |
c9f35b34 KB |
3763 | ptid_t result; |
3764 | ||
3765 | result = read_ptid (&rs->buf[2], &obuf); | |
2189c312 SM |
3766 | if (*obuf != '\0') |
3767 | remote_debug_printf ("warning: garbage in qC reply"); | |
c9f35b34 KB |
3768 | |
3769 | return result; | |
3770 | } | |
c906108c SS |
3771 | else |
3772 | return oldpid; | |
3773 | } | |
3774 | ||
6dc54d91 | 3775 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3776 | |
6b8edb51 PA |
3777 | int |
3778 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3779 | { |
6dc54d91 PA |
3780 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3781 | CRAZY_MAX_THREADS) >= 0) | |
3782 | return 1; | |
3783 | ||
3784 | return 0; | |
c906108c SS |
3785 | } |
3786 | ||
dc146f7c VP |
3787 | #if defined(HAVE_LIBEXPAT) |
3788 | ||
dc146f7c VP |
3789 | static void |
3790 | start_thread (struct gdb_xml_parser *parser, | |
3791 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3792 | void *user_data, |
3793 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3794 | { |
19ba03f4 SM |
3795 | struct threads_listing_context *data |
3796 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3797 | struct gdb_xml_value *attr; |
dc146f7c | 3798 | |
4d0fdd9b | 3799 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3800 | ptid_t ptid = read_ptid (id, NULL); |
3801 | ||
3802 | data->items.emplace_back (ptid); | |
3803 | thread_item &item = data->items.back (); | |
dc146f7c | 3804 | |
3d2c1d41 PA |
3805 | attr = xml_find_attribute (attributes, "core"); |
3806 | if (attr != NULL) | |
4d0fdd9b | 3807 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3808 | |
79efa585 | 3809 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3810 | if (attr != NULL) |
4d0fdd9b | 3811 | item.name = (const char *) attr->value.get (); |
79efa585 | 3812 | |
f6327dcb KB |
3813 | attr = xml_find_attribute (attributes, "handle"); |
3814 | if (attr != NULL) | |
4d0fdd9b | 3815 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3816 | } |
3817 | ||
3818 | static void | |
3819 | end_thread (struct gdb_xml_parser *parser, | |
3820 | const struct gdb_xml_element *element, | |
3821 | void *user_data, const char *body_text) | |
3822 | { | |
19ba03f4 SM |
3823 | struct threads_listing_context *data |
3824 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3825 | |
21fe1c75 SM |
3826 | if (body_text != NULL && *body_text != '\0') |
3827 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3828 | } |
3829 | ||
3830 | const struct gdb_xml_attribute thread_attributes[] = { | |
3831 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3832 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3833 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3834 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3835 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3836 | }; | |
3837 | ||
3838 | const struct gdb_xml_element thread_children[] = { | |
3839 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3840 | }; | |
3841 | ||
3842 | const struct gdb_xml_element threads_children[] = { | |
3843 | { "thread", thread_attributes, thread_children, | |
3844 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3845 | start_thread, end_thread }, | |
3846 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3847 | }; | |
3848 | ||
3849 | const struct gdb_xml_element threads_elements[] = { | |
3850 | { "threads", NULL, threads_children, | |
3851 | GDB_XML_EF_NONE, NULL, NULL }, | |
3852 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3853 | }; | |
3854 | ||
3855 | #endif | |
3856 | ||
6dc54d91 | 3857 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3858 | |
6b8edb51 PA |
3859 | int |
3860 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 3861 | { |
dc146f7c | 3862 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3863 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3864 | { |
9018be22 | 3865 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 3866 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3867 | |
9018be22 | 3868 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3869 | { |
6dc54d91 | 3870 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3871 | threads_elements, xml->data (), context); |
dc146f7c VP |
3872 | } |
3873 | ||
6dc54d91 | 3874 | return 1; |
dc146f7c VP |
3875 | } |
3876 | #endif | |
3877 | ||
6dc54d91 PA |
3878 | return 0; |
3879 | } | |
3880 | ||
3881 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3882 | ||
6b8edb51 PA |
3883 | int |
3884 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
3885 | { |
3886 | struct remote_state *rs = get_remote_state (); | |
3887 | ||
b80fafe3 | 3888 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3889 | { |
256642e8 | 3890 | const char *bufp; |
6dc54d91 | 3891 | |
9d1f7ab2 | 3892 | putpkt ("qfThreadInfo"); |
8d64371b TT |
3893 | getpkt (&rs->buf, 0); |
3894 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3895 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3896 | { |
9d1f7ab2 MS |
3897 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3898 | { | |
3899 | do | |
3900 | { | |
21fe1c75 SM |
3901 | ptid_t ptid = read_ptid (bufp, &bufp); |
3902 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3903 | } |
3904 | while (*bufp++ == ','); /* comma-separated list */ | |
3905 | putpkt ("qsThreadInfo"); | |
8d64371b TT |
3906 | getpkt (&rs->buf, 0); |
3907 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3908 | } |
6dc54d91 PA |
3909 | return 1; |
3910 | } | |
3911 | else | |
3912 | { | |
3913 | /* Packet not recognized. */ | |
3914 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3915 | } |
3916 | } | |
3917 | ||
6dc54d91 PA |
3918 | return 0; |
3919 | } | |
3920 | ||
a05575d3 TBA |
3921 | /* Return true if INF only has one non-exited thread. */ |
3922 | ||
3923 | static bool | |
3924 | has_single_non_exited_thread (inferior *inf) | |
3925 | { | |
3926 | int count = 0; | |
3927 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) | |
3928 | if (++count > 1) | |
3929 | break; | |
3930 | return count == 1; | |
3931 | } | |
3932 | ||
e8032dde | 3933 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3934 | targets. */ |
3935 | ||
f6ac5f3d PA |
3936 | void |
3937 | remote_target::update_thread_list () | |
6dc54d91 | 3938 | { |
6dc54d91 | 3939 | struct threads_listing_context context; |
ab970af1 | 3940 | int got_list = 0; |
e8032dde | 3941 | |
6dc54d91 PA |
3942 | /* We have a few different mechanisms to fetch the thread list. Try |
3943 | them all, starting with the most preferred one first, falling | |
3944 | back to older methods. */ | |
6b8edb51 PA |
3945 | if (remote_get_threads_with_qxfer (&context) |
3946 | || remote_get_threads_with_qthreadinfo (&context) | |
3947 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 3948 | { |
ab970af1 PA |
3949 | got_list = 1; |
3950 | ||
21fe1c75 | 3951 | if (context.items.empty () |
f6ac5f3d | 3952 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3953 | { |
3954 | /* Some targets don't really support threads, but still | |
3955 | reply an (empty) thread list in response to the thread | |
3956 | listing packets, instead of replying "packet not | |
3957 | supported". Exit early so we don't delete the main | |
3958 | thread. */ | |
7d1a114c PA |
3959 | return; |
3960 | } | |
3961 | ||
ab970af1 PA |
3962 | /* CONTEXT now holds the current thread list on the remote |
3963 | target end. Delete GDB-side threads no longer found on the | |
3964 | target. */ | |
08036331 | 3965 | for (thread_info *tp : all_threads_safe ()) |
cbb8991c | 3966 | { |
5b6d1e4f PA |
3967 | if (tp->inf->process_target () != this) |
3968 | continue; | |
3969 | ||
21fe1c75 | 3970 | if (!context.contains_thread (tp->ptid)) |
ab970af1 | 3971 | { |
a05575d3 TBA |
3972 | /* Do not remove the thread if it is the last thread in |
3973 | the inferior. This situation happens when we have a | |
3974 | pending exit process status to process. Otherwise we | |
3975 | may end up with a seemingly live inferior (i.e. pid | |
3976 | != 0) that has no threads. */ | |
3977 | if (has_single_non_exited_thread (tp->inf)) | |
3978 | continue; | |
3979 | ||
ab970af1 | 3980 | /* Not found. */ |
00431a78 | 3981 | delete_thread (tp); |
ab970af1 | 3982 | } |
cbb8991c DB |
3983 | } |
3984 | ||
3985 | /* Remove any unreported fork child threads from CONTEXT so | |
3986 | that we don't interfere with follow fork, which is where | |
3987 | creation of such threads is handled. */ | |
3988 | remove_new_fork_children (&context); | |
74531fed | 3989 | |
ab970af1 | 3990 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3991 | for (thread_item &item : context.items) |
6dc54d91 | 3992 | { |
21fe1c75 | 3993 | if (item.ptid != null_ptid) |
6dc54d91 | 3994 | { |
6dc54d91 | 3995 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3996 | executing until proven otherwise with a stop reply. |
3997 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3998 | stopped. */ |
8a82de58 | 3999 | bool executing = target_is_non_stop_p (); |
6dc54d91 | 4000 | |
21fe1c75 | 4001 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 4002 | |
5b6d1e4f | 4003 | thread_info *tp = find_thread_ptid (this, item.ptid); |
00431a78 | 4004 | remote_thread_info *info = get_remote_thread_info (tp); |
21fe1c75 | 4005 | info->core = item.core; |
7aabaf9d SM |
4006 | info->extra = std::move (item.extra); |
4007 | info->name = std::move (item.name); | |
4008 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
4009 | } |
4010 | } | |
4011 | } | |
4012 | ||
ab970af1 PA |
4013 | if (!got_list) |
4014 | { | |
4015 | /* If no thread listing method is supported, then query whether | |
4016 | each known thread is alive, one by one, with the T packet. | |
4017 | If the target doesn't support threads at all, then this is a | |
4018 | no-op. See remote_thread_alive. */ | |
4019 | prune_threads (); | |
4020 | } | |
9d1f7ab2 MS |
4021 | } |
4022 | ||
802188a7 | 4023 | /* |
9d1f7ab2 MS |
4024 | * Collect a descriptive string about the given thread. |
4025 | * The target may say anything it wants to about the thread | |
4026 | * (typically info about its blocked / runnable state, name, etc.). | |
4027 | * This string will appear in the info threads display. | |
802188a7 | 4028 | * |
9d1f7ab2 MS |
4029 | * Optional: targets are not required to implement this function. |
4030 | */ | |
4031 | ||
f6ac5f3d PA |
4032 | const char * |
4033 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 4034 | { |
d01949b6 | 4035 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
4036 | int set; |
4037 | threadref id; | |
4038 | struct gdb_ext_thread_info threadinfo; | |
9d1f7ab2 | 4039 | |
5d93a237 | 4040 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 4041 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4042 | _("remote_threads_extra_info")); |
9d1f7ab2 | 4043 | |
d7e15655 | 4044 | if (tp->ptid == magic_null_ptid |
e38504b3 | 4045 | || (tp->ptid.pid () != 0 && tp->ptid.lwp () == 0)) |
60e569b9 PA |
4046 | /* This is the main thread which was added by GDB. The remote |
4047 | server doesn't know about it. */ | |
4048 | return NULL; | |
4049 | ||
c76a8ea3 PA |
4050 | std::string &extra = get_remote_thread_info (tp)->extra; |
4051 | ||
4052 | /* If already have cached info, use it. */ | |
4053 | if (!extra.empty ()) | |
4054 | return extra.c_str (); | |
4055 | ||
4082afcc | 4056 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 4057 | { |
c76a8ea3 PA |
4058 | /* If we're using qXfer:threads:read, then the extra info is |
4059 | included in the XML. So if we didn't have anything cached, | |
4060 | it's because there's really no extra info. */ | |
4061 | return NULL; | |
dc146f7c VP |
4062 | } |
4063 | ||
b80fafe3 | 4064 | if (rs->use_threadextra_query) |
9d1f7ab2 | 4065 | { |
8d64371b TT |
4066 | char *b = rs->buf.data (); |
4067 | char *endb = b + get_remote_packet_size (); | |
82f73884 PA |
4068 | |
4069 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
4070 | b += strlen (b); | |
4071 | write_ptid (b, endb, tp->ptid); | |
4072 | ||
2e9f7625 | 4073 | putpkt (rs->buf); |
8d64371b | 4074 | getpkt (&rs->buf, 0); |
2e9f7625 | 4075 | if (rs->buf[0] != 0) |
9d1f7ab2 | 4076 | { |
8d64371b TT |
4077 | extra.resize (strlen (rs->buf.data ()) / 2); |
4078 | hex2bin (rs->buf.data (), (gdb_byte *) &extra[0], extra.size ()); | |
c76a8ea3 | 4079 | return extra.c_str (); |
9d1f7ab2 | 4080 | } |
0f71a2f6 | 4081 | } |
9d1f7ab2 MS |
4082 | |
4083 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 4084 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
4085 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
4086 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
e38504b3 | 4087 | int_to_threadref (&id, tp->ptid.lwp ()); |
9d1f7ab2 MS |
4088 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
4089 | if (threadinfo.active) | |
0f71a2f6 | 4090 | { |
9d1f7ab2 | 4091 | if (*threadinfo.shortname) |
c76a8ea3 | 4092 | string_appendf (extra, " Name: %s", threadinfo.shortname); |
9d1f7ab2 | 4093 | if (*threadinfo.display) |
c76a8ea3 PA |
4094 | { |
4095 | if (!extra.empty ()) | |
4096 | extra += ','; | |
4097 | string_appendf (extra, " State: %s", threadinfo.display); | |
4098 | } | |
9d1f7ab2 | 4099 | if (*threadinfo.more_display) |
c5aa993b | 4100 | { |
c76a8ea3 PA |
4101 | if (!extra.empty ()) |
4102 | extra += ','; | |
4103 | string_appendf (extra, " Priority: %s", threadinfo.more_display); | |
c5aa993b | 4104 | } |
c76a8ea3 | 4105 | return extra.c_str (); |
0f71a2f6 | 4106 | } |
9d1f7ab2 | 4107 | return NULL; |
0f71a2f6 | 4108 | } |
c906108c | 4109 | \f |
c5aa993b | 4110 | |
f6ac5f3d PA |
4111 | bool |
4112 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
4113 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
4114 | { |
4115 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 4116 | char *p = rs->buf.data (); |
0fb4aa4b | 4117 | |
bba74b36 | 4118 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
4119 | p += strlen (p); |
4120 | p += hexnumstr (p, addr); | |
4121 | putpkt (rs->buf); | |
8d64371b TT |
4122 | getpkt (&rs->buf, 0); |
4123 | p = rs->buf.data (); | |
0fb4aa4b PA |
4124 | |
4125 | if (*p == 'E') | |
4126 | error (_("Remote failure reply: %s"), p); | |
4127 | ||
4128 | if (*p++ == 'm') | |
4129 | { | |
256642e8 | 4130 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 4131 | return true; |
0fb4aa4b PA |
4132 | } |
4133 | ||
5d9310c4 | 4134 | return false; |
0fb4aa4b PA |
4135 | } |
4136 | ||
f6ac5f3d PA |
4137 | std::vector<static_tracepoint_marker> |
4138 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
4139 | { |
4140 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 4141 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 4142 | const char *p; |
5d9310c4 | 4143 | static_tracepoint_marker marker; |
0fb4aa4b PA |
4144 | |
4145 | /* Ask for a first packet of static tracepoint marker | |
4146 | definition. */ | |
4147 | putpkt ("qTfSTM"); | |
8d64371b TT |
4148 | getpkt (&rs->buf, 0); |
4149 | p = rs->buf.data (); | |
0fb4aa4b PA |
4150 | if (*p == 'E') |
4151 | error (_("Remote failure reply: %s"), p); | |
4152 | ||
0fb4aa4b PA |
4153 | while (*p++ == 'm') |
4154 | { | |
0fb4aa4b PA |
4155 | do |
4156 | { | |
5d9310c4 | 4157 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 4158 | |
5d9310c4 SM |
4159 | if (strid == NULL || marker.str_id == strid) |
4160 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
4161 | } |
4162 | while (*p++ == ','); /* comma-separated list */ | |
4163 | /* Ask for another packet of static tracepoint definition. */ | |
4164 | putpkt ("qTsSTM"); | |
8d64371b TT |
4165 | getpkt (&rs->buf, 0); |
4166 | p = rs->buf.data (); | |
0fb4aa4b PA |
4167 | } |
4168 | ||
0fb4aa4b PA |
4169 | return markers; |
4170 | } | |
4171 | ||
4172 | \f | |
10760264 JB |
4173 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
4174 | ||
f6ac5f3d | 4175 | ptid_t |
c80e29db | 4176 | remote_target::get_ada_task_ptid (long lwp, ULONGEST thread) |
10760264 | 4177 | { |
184ea2f7 | 4178 | return ptid_t (inferior_ptid.pid (), lwp); |
10760264 JB |
4179 | } |
4180 | \f | |
4181 | ||
24b06219 | 4182 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 4183 | |
6b8edb51 PA |
4184 | void |
4185 | remote_target::extended_remote_restart () | |
c906108c | 4186 | { |
d01949b6 | 4187 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4188 | |
4189 | /* Send the restart command; for reasons I don't understand the | |
4190 | remote side really expects a number after the "R". */ | |
8d64371b | 4191 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "R%x", 0); |
6d820c5c | 4192 | putpkt (rs->buf); |
c906108c | 4193 | |
ad9a8f3f | 4194 | remote_fileio_reset (); |
c906108c SS |
4195 | } |
4196 | \f | |
4197 | /* Clean up connection to a remote debugger. */ | |
4198 | ||
f6ac5f3d PA |
4199 | void |
4200 | remote_target::close () | |
c906108c | 4201 | { |
048094ac | 4202 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4203 | terminal_ours (); |
ce5ce7ed | 4204 | |
6b8edb51 PA |
4205 | trace_reset_local_state (); |
4206 | ||
4207 | delete this; | |
4208 | } | |
4209 | ||
4210 | remote_target::~remote_target () | |
4211 | { | |
4212 | struct remote_state *rs = get_remote_state (); | |
4213 | ||
4214 | /* Check for NULL because we may get here with a partially | |
4215 | constructed target/connection. */ | |
4216 | if (rs->remote_desc == nullptr) | |
4217 | return; | |
4218 | ||
4219 | serial_close (rs->remote_desc); | |
4220 | ||
4221 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4222 | everything of this target. */ |
6b8edb51 | 4223 | discard_pending_stop_replies_in_queue (); |
74531fed | 4224 | |
6b8edb51 PA |
4225 | if (rs->remote_async_inferior_event_token) |
4226 | delete_async_event_handler (&rs->remote_async_inferior_event_token); | |
722247f1 | 4227 | |
97dfbadd | 4228 | delete rs->notif_state; |
c906108c SS |
4229 | } |
4230 | ||
23860348 | 4231 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4232 | |
6b8edb51 PA |
4233 | void |
4234 | remote_target::get_offsets () | |
c906108c | 4235 | { |
d01949b6 | 4236 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4237 | char *buf; |
085dd6e6 | 4238 | char *ptr; |
31d99776 DJ |
4239 | int lose, num_segments = 0, do_sections, do_segments; |
4240 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
31d99776 | 4241 | |
a42d7dd8 | 4242 | if (current_program_space->symfile_object_file == NULL) |
31d99776 | 4243 | return; |
c906108c SS |
4244 | |
4245 | putpkt ("qOffsets"); | |
8d64371b TT |
4246 | getpkt (&rs->buf, 0); |
4247 | buf = rs->buf.data (); | |
c906108c SS |
4248 | |
4249 | if (buf[0] == '\000') | |
4250 | return; /* Return silently. Stub doesn't support | |
23860348 | 4251 | this command. */ |
c906108c SS |
4252 | if (buf[0] == 'E') |
4253 | { | |
8a3fe4f8 | 4254 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4255 | return; |
4256 | } | |
4257 | ||
4258 | /* Pick up each field in turn. This used to be done with scanf, but | |
4259 | scanf will make trouble if CORE_ADDR size doesn't match | |
4260 | conversion directives correctly. The following code will work | |
4261 | with any size of CORE_ADDR. */ | |
4262 | text_addr = data_addr = bss_addr = 0; | |
4263 | ptr = buf; | |
4264 | lose = 0; | |
4265 | ||
61012eef | 4266 | if (startswith (ptr, "Text=")) |
c906108c SS |
4267 | { |
4268 | ptr += 5; | |
4269 | /* Don't use strtol, could lose on big values. */ | |
4270 | while (*ptr && *ptr != ';') | |
4271 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4272 | |
61012eef | 4273 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4274 | { |
4275 | ptr += 6; | |
4276 | while (*ptr && *ptr != ';') | |
4277 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4278 | } | |
4279 | else | |
4280 | lose = 1; | |
4281 | ||
61012eef | 4282 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4283 | { |
4284 | ptr += 5; | |
4285 | while (*ptr && *ptr != ';') | |
4286 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4287 | |
31d99776 DJ |
4288 | if (bss_addr != data_addr) |
4289 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4290 | } | |
4291 | else | |
4292 | lose = 1; | |
4293 | } | |
61012eef | 4294 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4295 | { |
31d99776 DJ |
4296 | ptr += 8; |
4297 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4298 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4299 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4300 | num_segments = 1; | |
4301 | ||
61012eef | 4302 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4303 | { |
4304 | ptr += 9; | |
4305 | while (*ptr && *ptr != ';') | |
4306 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4307 | num_segments++; | |
4308 | } | |
c906108c SS |
4309 | } |
4310 | else | |
4311 | lose = 1; | |
4312 | ||
4313 | if (lose) | |
8a3fe4f8 | 4314 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4315 | else if (*ptr != '\0') |
4316 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4317 | |
a42d7dd8 TT |
4318 | objfile *objf = current_program_space->symfile_object_file; |
4319 | section_offsets offs = objf->section_offsets; | |
c906108c | 4320 | |
a42d7dd8 | 4321 | symfile_segment_data_up data = get_symfile_segment_data (objf->obfd); |
31d99776 DJ |
4322 | do_segments = (data != NULL); |
4323 | do_sections = num_segments == 0; | |
c906108c | 4324 | |
28c32713 | 4325 | if (num_segments > 0) |
31d99776 | 4326 | { |
31d99776 DJ |
4327 | segments[0] = text_addr; |
4328 | segments[1] = data_addr; | |
4329 | } | |
28c32713 JB |
4330 | /* If we have two segments, we can still try to relocate everything |
4331 | by assuming that the .text and .data offsets apply to the whole | |
4332 | text and data segments. Convert the offsets given in the packet | |
4333 | to base addresses for symfile_map_offsets_to_segments. */ | |
68b888ff | 4334 | else if (data != nullptr && data->segments.size () == 2) |
28c32713 | 4335 | { |
68b888ff SM |
4336 | segments[0] = data->segments[0].base + text_addr; |
4337 | segments[1] = data->segments[1].base + data_addr; | |
28c32713 JB |
4338 | num_segments = 2; |
4339 | } | |
8d385431 DJ |
4340 | /* If the object file has only one segment, assume that it is text |
4341 | rather than data; main programs with no writable data are rare, | |
4342 | but programs with no code are useless. Of course the code might | |
4343 | have ended up in the data segment... to detect that we would need | |
4344 | the permissions here. */ | |
68b888ff | 4345 | else if (data && data->segments.size () == 1) |
8d385431 | 4346 | { |
68b888ff | 4347 | segments[0] = data->segments[0].base + text_addr; |
8d385431 DJ |
4348 | num_segments = 1; |
4349 | } | |
28c32713 JB |
4350 | /* There's no way to relocate by segment. */ |
4351 | else | |
4352 | do_segments = 0; | |
31d99776 DJ |
4353 | |
4354 | if (do_segments) | |
4355 | { | |
a42d7dd8 | 4356 | int ret = symfile_map_offsets_to_segments (objf->obfd, |
62982abd SM |
4357 | data.get (), offs, |
4358 | num_segments, segments); | |
31d99776 DJ |
4359 | |
4360 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4361 | error (_("Can not handle qOffsets TextSeg " |
4362 | "response with this symbol file")); | |
31d99776 DJ |
4363 | |
4364 | if (ret > 0) | |
4365 | do_sections = 0; | |
4366 | } | |
c906108c | 4367 | |
31d99776 DJ |
4368 | if (do_sections) |
4369 | { | |
a42d7dd8 | 4370 | offs[SECT_OFF_TEXT (objf)] = text_addr; |
31d99776 | 4371 | |
3e43a32a MS |
4372 | /* This is a temporary kludge to force data and bss to use the |
4373 | same offsets because that's what nlmconv does now. The real | |
4374 | solution requires changes to the stub and remote.c that I | |
4375 | don't have time to do right now. */ | |
31d99776 | 4376 | |
a42d7dd8 TT |
4377 | offs[SECT_OFF_DATA (objf)] = data_addr; |
4378 | offs[SECT_OFF_BSS (objf)] = data_addr; | |
31d99776 | 4379 | } |
c906108c | 4380 | |
a42d7dd8 | 4381 | objfile_relocate (objf, offs); |
c906108c SS |
4382 | } |
4383 | ||
9a7071a8 | 4384 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4385 | |
4386 | void | |
4387 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4388 | { |
5d93a237 TT |
4389 | struct remote_state *rs = get_remote_state (); |
4390 | ||
9a7071a8 | 4391 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4392 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4393 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4394 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4395 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4396 | { | |
5d93a237 | 4397 | serial_send_break (rs->remote_desc); |
c33e31fd | 4398 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4399 | } |
4400 | else | |
4401 | internal_error (__FILE__, __LINE__, | |
4402 | _("Invalid value for interrupt_sequence_mode: %s."), | |
4403 | interrupt_sequence_mode); | |
4404 | } | |
4405 | ||
3405876a PA |
4406 | |
4407 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4408 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4409 | ||
4410 | static ptid_t | |
e3b2741b | 4411 | stop_reply_extract_thread (const char *stop_reply) |
3405876a PA |
4412 | { |
4413 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4414 | { | |
256642e8 | 4415 | const char *p; |
3405876a PA |
4416 | |
4417 | /* Txx r:val ; r:val (...) */ | |
4418 | p = &stop_reply[3]; | |
4419 | ||
4420 | /* Look for "register" named "thread". */ | |
4421 | while (*p != '\0') | |
4422 | { | |
256642e8 | 4423 | const char *p1; |
3405876a PA |
4424 | |
4425 | p1 = strchr (p, ':'); | |
4426 | if (p1 == NULL) | |
4427 | return null_ptid; | |
4428 | ||
4429 | if (strncmp (p, "thread", p1 - p) == 0) | |
4430 | return read_ptid (++p1, &p); | |
4431 | ||
4432 | p1 = strchr (p, ';'); | |
4433 | if (p1 == NULL) | |
4434 | return null_ptid; | |
4435 | p1++; | |
4436 | ||
4437 | p = p1; | |
4438 | } | |
4439 | } | |
4440 | ||
4441 | return null_ptid; | |
4442 | } | |
4443 | ||
b7ea362b PA |
4444 | /* Determine the remote side's current thread. If we have a stop |
4445 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4446 | "thread" register we can extract the current thread from. If not, | |
4447 | ask the remote which is the current thread with qC. The former | |
4448 | method avoids a roundtrip. */ | |
4449 | ||
6b8edb51 | 4450 | ptid_t |
e3b2741b | 4451 | remote_target::get_current_thread (const char *wait_status) |
b7ea362b | 4452 | { |
6a49a997 | 4453 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4454 | |
4455 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4456 | the target architecture, which we haven't yet fully determined at | |
4457 | this point. */ | |
4458 | if (wait_status != NULL) | |
4459 | ptid = stop_reply_extract_thread (wait_status); | |
d7e15655 | 4460 | if (ptid == null_ptid) |
b7ea362b PA |
4461 | ptid = remote_current_thread (inferior_ptid); |
4462 | ||
4463 | return ptid; | |
4464 | } | |
4465 | ||
49c62f2e PA |
4466 | /* Query the remote target for which is the current thread/process, |
4467 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4468 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4469 | to return the current thread. |
4470 | ||
4471 | This function is called after handling the '?' or 'vRun' packets, | |
4472 | whose response is a stop reply from which we can also try | |
4473 | extracting the thread. If the target doesn't support the explicit | |
4474 | qC query, we infer the current thread from that stop reply, passed | |
64d38fdd | 4475 | in in WAIT_STATUS, which may be NULL. |
49c62f2e | 4476 | |
64d38fdd JM |
4477 | The function returns pointer to the main thread of the inferior. */ |
4478 | ||
4479 | thread_info * | |
e3b2741b | 4480 | remote_target::add_current_inferior_and_thread (const char *wait_status) |
49c62f2e PA |
4481 | { |
4482 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 4483 | bool fake_pid_p = false; |
49c62f2e | 4484 | |
0ac55310 | 4485 | switch_to_no_thread (); |
49c62f2e | 4486 | |
0ac55310 PA |
4487 | /* Now, if we have thread information, update the current thread's |
4488 | ptid. */ | |
87215ad1 | 4489 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4490 | |
87215ad1 | 4491 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4492 | { |
4493 | if (!remote_multi_process_p (rs)) | |
9ab8741a | 4494 | fake_pid_p = true; |
49c62f2e PA |
4495 | } |
4496 | else | |
4497 | { | |
4498 | /* Without this, some commands which require an active target | |
4499 | (such as kill) won't work. This variable serves (at least) | |
4500 | double duty as both the pid of the target process (if it has | |
4501 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4502 | curr_ptid = magic_null_ptid; |
9ab8741a | 4503 | fake_pid_p = true; |
49c62f2e PA |
4504 | } |
4505 | ||
e99b03dc | 4506 | remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1); |
49c62f2e | 4507 | |
87215ad1 SDJ |
4508 | /* Add the main thread and switch to it. Don't try reading |
4509 | registers yet, since we haven't fetched the target description | |
4510 | yet. */ | |
5b6d1e4f | 4511 | thread_info *tp = add_thread_silent (this, curr_ptid); |
87215ad1 | 4512 | switch_to_thread_no_regs (tp); |
64d38fdd JM |
4513 | |
4514 | return tp; | |
49c62f2e PA |
4515 | } |
4516 | ||
6efcd9a8 PA |
4517 | /* Print info about a thread that was found already stopped on |
4518 | connection. */ | |
4519 | ||
1edb66d8 SM |
4520 | void |
4521 | remote_target::print_one_stopped_thread (thread_info *thread) | |
6efcd9a8 | 4522 | { |
1edb66d8 SM |
4523 | target_waitstatus ws; |
4524 | ||
4525 | /* If there is a pending waitstatus, use it. If there isn't it's because | |
4526 | the thread's stop was reported with TARGET_WAITKIND_STOPPED / GDB_SIGNAL_0 | |
4527 | and process_initial_stop_replies decided it wasn't interesting to save | |
4528 | and report to the core. */ | |
4529 | if (thread->has_pending_waitstatus ()) | |
4530 | { | |
4531 | ws = thread->pending_waitstatus (); | |
4532 | thread->clear_pending_waitstatus (); | |
4533 | } | |
4534 | else | |
4535 | { | |
183be222 | 4536 | ws.set_stopped (GDB_SIGNAL_0); |
1edb66d8 | 4537 | } |
6efcd9a8 | 4538 | |
00431a78 | 4539 | switch_to_thread (thread); |
1edb66d8 | 4540 | thread->set_stop_pc (get_frame_pc (get_current_frame ())); |
6efcd9a8 PA |
4541 | set_current_sal_from_frame (get_current_frame ()); |
4542 | ||
1edb66d8 SM |
4543 | /* For "info program". */ |
4544 | set_last_target_status (this, thread->ptid, ws); | |
6efcd9a8 | 4545 | |
183be222 | 4546 | if (ws.kind () == TARGET_WAITKIND_STOPPED) |
6efcd9a8 | 4547 | { |
183be222 | 4548 | enum gdb_signal sig = ws.sig (); |
6efcd9a8 PA |
4549 | |
4550 | if (signal_print_state (sig)) | |
76727919 | 4551 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4552 | } |
76727919 | 4553 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4554 | } |
4555 | ||
221e1a37 PA |
4556 | /* Process all initial stop replies the remote side sent in response |
4557 | to the ? packet. These indicate threads that were already stopped | |
4558 | on initial connection. We mark these threads as stopped and print | |
4559 | their current frame before giving the user the prompt. */ | |
4560 | ||
6b8edb51 PA |
4561 | void |
4562 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4563 | { |
4564 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4565 | struct thread_info *selected = NULL; |
4566 | struct thread_info *lowest_stopped = NULL; | |
4567 | struct thread_info *first = NULL; | |
221e1a37 | 4568 | |
1edb66d8 SM |
4569 | /* This is only used when the target is non-stop. */ |
4570 | gdb_assert (target_is_non_stop_p ()); | |
4571 | ||
221e1a37 PA |
4572 | /* Consume the initial pending events. */ |
4573 | while (pending_stop_replies-- > 0) | |
4574 | { | |
4575 | ptid_t waiton_ptid = minus_one_ptid; | |
4576 | ptid_t event_ptid; | |
4577 | struct target_waitstatus ws; | |
4578 | int ignore_event = 0; | |
4579 | ||
221e1a37 PA |
4580 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); |
4581 | if (remote_debug) | |
c272a98c | 4582 | print_target_wait_results (waiton_ptid, event_ptid, ws); |
221e1a37 | 4583 | |
183be222 | 4584 | switch (ws.kind ()) |
221e1a37 PA |
4585 | { |
4586 | case TARGET_WAITKIND_IGNORE: | |
4587 | case TARGET_WAITKIND_NO_RESUMED: | |
4588 | case TARGET_WAITKIND_SIGNALLED: | |
4589 | case TARGET_WAITKIND_EXITED: | |
4590 | /* We shouldn't see these, but if we do, just ignore. */ | |
2189c312 | 4591 | remote_debug_printf ("event ignored"); |
221e1a37 PA |
4592 | ignore_event = 1; |
4593 | break; | |
4594 | ||
221e1a37 PA |
4595 | default: |
4596 | break; | |
4597 | } | |
4598 | ||
4599 | if (ignore_event) | |
4600 | continue; | |
4601 | ||
5b6d1e4f | 4602 | thread_info *evthread = find_thread_ptid (this, event_ptid); |
221e1a37 | 4603 | |
183be222 | 4604 | if (ws.kind () == TARGET_WAITKIND_STOPPED) |
221e1a37 | 4605 | { |
183be222 | 4606 | enum gdb_signal sig = ws.sig (); |
221e1a37 PA |
4607 | |
4608 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4609 | instead of signal 0. Suppress it. */ | |
4610 | if (sig == GDB_SIGNAL_TRAP) | |
4611 | sig = GDB_SIGNAL_0; | |
1edb66d8 | 4612 | evthread->set_stop_signal (sig); |
183be222 | 4613 | ws.set_stopped (sig); |
6efcd9a8 | 4614 | } |
221e1a37 | 4615 | |
183be222 SM |
4616 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
4617 | || ws.sig () != GDB_SIGNAL_0) | |
1edb66d8 | 4618 | evthread->set_pending_waitstatus (ws); |
6efcd9a8 | 4619 | |
719546c4 SM |
4620 | set_executing (this, event_ptid, false); |
4621 | set_running (this, event_ptid, false); | |
c9d22089 | 4622 | get_remote_thread_info (evthread)->set_not_resumed (); |
6efcd9a8 PA |
4623 | } |
4624 | ||
4625 | /* "Notice" the new inferiors before anything related to | |
4626 | registers/memory. */ | |
5b6d1e4f | 4627 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4628 | { |
6efcd9a8 PA |
4629 | inf->needs_setup = 1; |
4630 | ||
4631 | if (non_stop) | |
4632 | { | |
08036331 | 4633 | thread_info *thread = any_live_thread_of_inferior (inf); |
00431a78 | 4634 | notice_new_inferior (thread, thread->state == THREAD_RUNNING, |
6efcd9a8 PA |
4635 | from_tty); |
4636 | } | |
4637 | } | |
4638 | ||
4639 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4640 | records the threads' stop pc, so must be done after "noticing" | |
4641 | the inferiors. */ | |
4642 | if (!non_stop) | |
4643 | { | |
abe8cab7 SM |
4644 | { |
4645 | /* At this point, the remote target is not async. It needs to be for | |
4646 | the poll in stop_all_threads to consider events from it, so enable | |
4647 | it temporarily. */ | |
4648 | gdb_assert (!this->is_async_p ()); | |
4649 | SCOPE_EXIT { target_async (0); }; | |
4650 | target_async (1); | |
4651 | stop_all_threads (); | |
4652 | } | |
6efcd9a8 PA |
4653 | |
4654 | /* If all threads of an inferior were already stopped, we | |
4655 | haven't setup the inferior yet. */ | |
5b6d1e4f | 4656 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4657 | { |
6efcd9a8 PA |
4658 | if (inf->needs_setup) |
4659 | { | |
08036331 | 4660 | thread_info *thread = any_live_thread_of_inferior (inf); |
6efcd9a8 PA |
4661 | switch_to_thread_no_regs (thread); |
4662 | setup_inferior (0); | |
4663 | } | |
4664 | } | |
221e1a37 | 4665 | } |
6efcd9a8 PA |
4666 | |
4667 | /* Now go over all threads that are stopped, and print their current | |
4668 | frame. If all-stop, then if there's a signalled thread, pick | |
4669 | that as current. */ | |
5b6d1e4f | 4670 | for (thread_info *thread : all_non_exited_threads (this)) |
6efcd9a8 | 4671 | { |
6efcd9a8 PA |
4672 | if (first == NULL) |
4673 | first = thread; | |
4674 | ||
4675 | if (!non_stop) | |
00431a78 | 4676 | thread->set_running (false); |
6efcd9a8 PA |
4677 | else if (thread->state != THREAD_STOPPED) |
4678 | continue; | |
4679 | ||
1edb66d8 | 4680 | if (selected == nullptr && thread->has_pending_waitstatus ()) |
6efcd9a8 PA |
4681 | selected = thread; |
4682 | ||
5d5658a1 PA |
4683 | if (lowest_stopped == NULL |
4684 | || thread->inf->num < lowest_stopped->inf->num | |
4685 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4686 | lowest_stopped = thread; |
4687 | ||
4688 | if (non_stop) | |
4689 | print_one_stopped_thread (thread); | |
4690 | } | |
4691 | ||
4692 | /* In all-stop, we only print the status of one thread, and leave | |
4693 | others with their status pending. */ | |
4694 | if (!non_stop) | |
4695 | { | |
08036331 | 4696 | thread_info *thread = selected; |
6efcd9a8 PA |
4697 | if (thread == NULL) |
4698 | thread = lowest_stopped; | |
4699 | if (thread == NULL) | |
4700 | thread = first; | |
4701 | ||
4702 | print_one_stopped_thread (thread); | |
4703 | } | |
221e1a37 PA |
4704 | } |
4705 | ||
7a34f66b AB |
4706 | /* Mark a remote_target as marking (by setting the starting_up flag within |
4707 | its remote_state) for the lifetime of this object. The reference count | |
4708 | on the remote target is temporarily incremented, to prevent the target | |
4709 | being deleted under our feet. */ | |
4710 | ||
4711 | struct scoped_mark_target_starting | |
4712 | { | |
4713 | /* Constructor, TARGET is the target to be marked as starting, its | |
4714 | reference count will be incremented. */ | |
4715 | scoped_mark_target_starting (remote_target *target) | |
4716 | : m_remote_target (target) | |
4717 | { | |
4718 | m_remote_target->incref (); | |
4719 | remote_state *rs = m_remote_target->get_remote_state (); | |
4720 | rs->starting_up = true; | |
4721 | } | |
4722 | ||
4723 | /* Destructor, mark the target being worked on as no longer starting, and | |
4724 | decrement the reference count. */ | |
4725 | ~scoped_mark_target_starting () | |
4726 | { | |
4727 | remote_state *rs = m_remote_target->get_remote_state (); | |
4728 | rs->starting_up = false; | |
4729 | decref_target (m_remote_target); | |
4730 | } | |
4731 | ||
4732 | private: | |
4733 | ||
4734 | /* The target on which we are operating. */ | |
4735 | remote_target *m_remote_target; | |
4736 | }; | |
4737 | ||
288712bb AB |
4738 | /* Helper for remote_target::start_remote, start the remote connection and |
4739 | sync state. Return true if everything goes OK, otherwise, return false. | |
4740 | This function exists so that the scoped_restore created within it will | |
4741 | expire before we return to remote_target::start_remote. */ | |
048094ac | 4742 | |
288712bb AB |
4743 | bool |
4744 | remote_target::start_remote_1 (int from_tty, int extended_p) | |
c906108c | 4745 | { |
2189c312 SM |
4746 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
4747 | ||
c8d104ad PA |
4748 | struct remote_state *rs = get_remote_state (); |
4749 | struct packet_config *noack_config; | |
8621d6a9 | 4750 | |
048094ac PA |
4751 | /* Signal other parts that we're going through the initial setup, |
4752 | and so things may not be stable yet. E.g., we don't try to | |
4753 | install tracepoints until we've relocated symbols. Also, a | |
4754 | Ctrl-C before we're connected and synced up can't interrupt the | |
4755 | target. Instead, it offers to drop the (potentially wedged) | |
4756 | connection. */ | |
7a34f66b | 4757 | scoped_mark_target_starting target_is_starting (this); |
048094ac | 4758 | |
522002f9 | 4759 | QUIT; |
c906108c | 4760 | |
9a7071a8 JB |
4761 | if (interrupt_on_connect) |
4762 | send_interrupt_sequence (); | |
4763 | ||
57e12211 | 4764 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4765 | remote_serial_write ("+", 1); |
1e51243a | 4766 | |
c8d104ad PA |
4767 | /* The first packet we send to the target is the optional "supported |
4768 | packets" request. If the target can answer this, it will tell us | |
4769 | which later probes to skip. */ | |
4770 | remote_query_supported (); | |
4771 | ||
d914c394 | 4772 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4773 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4774 | set_permissions (); |
d914c394 | 4775 | |
57809e5e JK |
4776 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4777 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4778 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4779 | invalid reply and GDB would return error in | |
4780 | remote_hostio_set_filesystem, making remote files access impossible. | |
4781 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4782 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4783 | { | |
4784 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4785 | ||
4786 | putpkt (v_mustreplyempty); | |
8d64371b TT |
4787 | getpkt (&rs->buf, 0); |
4788 | if (strcmp (rs->buf.data (), "OK") == 0) | |
57809e5e | 4789 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; |
8d64371b | 4790 | else if (strcmp (rs->buf.data (), "") != 0) |
57809e5e | 4791 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, |
8d64371b | 4792 | rs->buf.data ()); |
57809e5e JK |
4793 | } |
4794 | ||
c8d104ad PA |
4795 | /* Next, we possibly activate noack mode. |
4796 | ||
4797 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4798 | enable noack mode if the stub reported a wish for it with | |
4799 | qSupported. | |
4800 | ||
4801 | If set to TRUE, then enable noack mode even if the stub didn't | |
4802 | report it in qSupported. If the stub doesn't reply OK, the | |
4803 | session ends with an error. | |
4804 | ||
4805 | If FALSE, then don't activate noack mode, regardless of what the | |
4806 | stub claimed should be the default with qSupported. */ | |
4807 | ||
4808 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4809 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4810 | { |
4811 | putpkt ("QStartNoAckMode"); | |
8d64371b | 4812 | getpkt (&rs->buf, 0); |
c8d104ad PA |
4813 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) |
4814 | rs->noack_mode = 1; | |
4815 | } | |
4816 | ||
04bd08de | 4817 | if (extended_p) |
5fe04517 PA |
4818 | { |
4819 | /* Tell the remote that we are using the extended protocol. */ | |
4820 | putpkt ("!"); | |
8d64371b | 4821 | getpkt (&rs->buf, 0); |
5fe04517 PA |
4822 | } |
4823 | ||
9b224c5e PA |
4824 | /* Let the target know which signals it is allowed to pass down to |
4825 | the program. */ | |
4826 | update_signals_program_target (); | |
4827 | ||
d962ef82 DJ |
4828 | /* Next, if the target can specify a description, read it. We do |
4829 | this before anything involving memory or registers. */ | |
4830 | target_find_description (); | |
4831 | ||
6c95b8df PA |
4832 | /* Next, now that we know something about the target, update the |
4833 | address spaces in the program spaces. */ | |
4834 | update_address_spaces (); | |
4835 | ||
50c71eaf PA |
4836 | /* On OSs where the list of libraries is global to all |
4837 | processes, we fetch them early. */ | |
f5656ead | 4838 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4839 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4840 | |
6efcd9a8 | 4841 | if (target_is_non_stop_p ()) |
74531fed | 4842 | { |
4082afcc | 4843 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4844 | error (_("Non-stop mode requested, but remote " |
4845 | "does not support non-stop")); | |
74531fed PA |
4846 | |
4847 | putpkt ("QNonStop:1"); | |
8d64371b | 4848 | getpkt (&rs->buf, 0); |
74531fed | 4849 | |
8d64371b TT |
4850 | if (strcmp (rs->buf.data (), "OK") != 0) |
4851 | error (_("Remote refused setting non-stop mode with: %s"), | |
4852 | rs->buf.data ()); | |
74531fed PA |
4853 | |
4854 | /* Find about threads and processes the stub is already | |
4855 | controlling. We default to adding them in the running state. | |
4856 | The '?' query below will then tell us about which threads are | |
4857 | stopped. */ | |
f6ac5f3d | 4858 | this->update_thread_list (); |
74531fed | 4859 | } |
4082afcc | 4860 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4861 | { |
4862 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4863 | Request it explicitly. */ |
74531fed | 4864 | putpkt ("QNonStop:0"); |
8d64371b | 4865 | getpkt (&rs->buf, 0); |
74531fed | 4866 | |
8d64371b TT |
4867 | if (strcmp (rs->buf.data (), "OK") != 0) |
4868 | error (_("Remote refused setting all-stop mode with: %s"), | |
4869 | rs->buf.data ()); | |
74531fed PA |
4870 | } |
4871 | ||
a0743c90 YQ |
4872 | /* Upload TSVs regardless of whether the target is running or not. The |
4873 | remote stub, such as GDBserver, may have some predefined or builtin | |
4874 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4875 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4876 | { |
4877 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4878 | ||
f6ac5f3d | 4879 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4880 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4881 | } | |
4882 | ||
2d717e4f DJ |
4883 | /* Check whether the target is running now. */ |
4884 | putpkt ("?"); | |
8d64371b | 4885 | getpkt (&rs->buf, 0); |
2d717e4f | 4886 | |
6efcd9a8 | 4887 | if (!target_is_non_stop_p ()) |
2d717e4f | 4888 | { |
b5c8f22d SM |
4889 | char *wait_status = NULL; |
4890 | ||
74531fed | 4891 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4892 | { |
04bd08de | 4893 | if (!extended_p) |
74531fed | 4894 | error (_("The target is not running (try extended-remote?)")); |
288712bb | 4895 | return false; |
2d717e4f DJ |
4896 | } |
4897 | else | |
74531fed | 4898 | { |
74531fed | 4899 | /* Save the reply for later. */ |
8d64371b TT |
4900 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
4901 | strcpy (wait_status, rs->buf.data ()); | |
74531fed PA |
4902 | } |
4903 | ||
b7ea362b | 4904 | /* Fetch thread list. */ |
e8032dde | 4905 | target_update_thread_list (); |
b7ea362b | 4906 | |
74531fed PA |
4907 | /* Let the stub know that we want it to return the thread. */ |
4908 | set_continue_thread (minus_one_ptid); | |
4909 | ||
5b6d1e4f | 4910 | if (thread_count (this) == 0) |
b7ea362b PA |
4911 | { |
4912 | /* Target has no concept of threads at all. GDB treats | |
4913 | non-threaded target as single-threaded; add a main | |
4914 | thread. */ | |
64d38fdd JM |
4915 | thread_info *tp = add_current_inferior_and_thread (wait_status); |
4916 | get_remote_thread_info (tp)->set_resumed (); | |
b7ea362b PA |
4917 | } |
4918 | else | |
4919 | { | |
4920 | /* We have thread information; select the thread the target | |
4921 | says should be current. If we're reconnecting to a | |
4922 | multi-threaded program, this will ideally be the thread | |
4923 | that last reported an event before GDB disconnected. */ | |
75c6c844 PA |
4924 | ptid_t curr_thread = get_current_thread (wait_status); |
4925 | if (curr_thread == null_ptid) | |
b7ea362b PA |
4926 | { |
4927 | /* Odd... The target was able to list threads, but not | |
4928 | tell us which thread was current (no "thread" | |
4929 | register in T stop reply?). Just pick the first | |
4930 | thread in the thread list then. */ | |
2189c312 SM |
4931 | |
4932 | remote_debug_printf ("warning: couldn't determine remote " | |
4933 | "current thread; picking first in list."); | |
c9f35b34 | 4934 | |
5b6d1e4f PA |
4935 | for (thread_info *tp : all_non_exited_threads (this, |
4936 | minus_one_ptid)) | |
75c6c844 PA |
4937 | { |
4938 | switch_to_thread (tp); | |
4939 | break; | |
4940 | } | |
b7ea362b | 4941 | } |
75c6c844 | 4942 | else |
5b6d1e4f | 4943 | switch_to_thread (find_thread_ptid (this, curr_thread)); |
b7ea362b | 4944 | } |
74531fed | 4945 | |
6e586cc5 YQ |
4946 | /* init_wait_for_inferior should be called before get_offsets in order |
4947 | to manage `inserted' flag in bp loc in a correct state. | |
4948 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4949 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4950 | start_remote, set `inserted' flag to 1. In the initialization of | |
4951 | inferior, breakpoint_init_inferior should be called first, and then | |
4952 | breakpoint_re_set can be called. If this order is broken, state of | |
4953 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4954 | manipulation. */ | |
4955 | init_wait_for_inferior (); | |
4956 | ||
74531fed PA |
4957 | get_offsets (); /* Get text, data & bss offsets. */ |
4958 | ||
d962ef82 DJ |
4959 | /* If we could not find a description using qXfer, and we know |
4960 | how to do it some other way, try again. This is not | |
4961 | supported for non-stop; it could be, but it is tricky if | |
4962 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4963 | if (remote_read_description_p (this) |
f5656ead | 4964 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4965 | { |
4966 | target_clear_description (); | |
4967 | target_find_description (); | |
4968 | } | |
4969 | ||
74531fed PA |
4970 | /* Use the previously fetched status. */ |
4971 | gdb_assert (wait_status != NULL); | |
8d64371b | 4972 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
4973 | rs->cached_wait_status = 1; |
4974 | ||
f6ac5f3d | 4975 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4976 | } |
4977 | else | |
4978 | { | |
68c97600 PA |
4979 | /* Clear WFI global state. Do this before finding about new |
4980 | threads and inferiors, and setting the current inferior. | |
4981 | Otherwise we would clear the proceed status of the current | |
4982 | inferior when we want its stop_soon state to be preserved | |
4983 | (see notice_new_inferior). */ | |
4984 | init_wait_for_inferior (); | |
4985 | ||
74531fed PA |
4986 | /* In non-stop, we will either get an "OK", meaning that there |
4987 | are no stopped threads at this time; or, a regular stop | |
4988 | reply. In the latter case, there may be more than one thread | |
4989 | stopped --- we pull them all out using the vStopped | |
4990 | mechanism. */ | |
8d64371b | 4991 | if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 4992 | { |
722247f1 | 4993 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4994 | |
722247f1 YQ |
4995 | /* remote_notif_get_pending_replies acks this one, and gets |
4996 | the rest out. */ | |
f48ff2a7 | 4997 | rs->notif_state->pending_event[notif_client_stop.id] |
8d64371b | 4998 | = remote_notif_parse (this, notif, rs->buf.data ()); |
722247f1 | 4999 | remote_notif_get_pending_events (notif); |
74531fed | 5000 | } |
2d717e4f | 5001 | |
5b6d1e4f | 5002 | if (thread_count (this) == 0) |
74531fed | 5003 | { |
04bd08de | 5004 | if (!extended_p) |
74531fed | 5005 | error (_("The target is not running (try extended-remote?)")); |
288712bb | 5006 | return false; |
c35b1492 | 5007 | } |
74531fed | 5008 | |
2455069d | 5009 | /* Report all signals during attach/startup. */ |
adc6a863 | 5010 | pass_signals ({}); |
221e1a37 PA |
5011 | |
5012 | /* If there are already stopped threads, mark them stopped and | |
5013 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 5014 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
5015 | |
5016 | if (target_can_async_p ()) | |
5017 | target_async (1); | |
74531fed | 5018 | } |
c8d104ad | 5019 | |
c8d104ad | 5020 | /* If we connected to a live target, do some additional setup. */ |
55f6301a | 5021 | if (target_has_execution ()) |
c8d104ad | 5022 | { |
a42d7dd8 TT |
5023 | /* No use without a symbol-file. */ |
5024 | if (current_program_space->symfile_object_file) | |
36d25514 | 5025 | remote_check_symbols (); |
c8d104ad | 5026 | } |
50c71eaf | 5027 | |
d5551862 SS |
5028 | /* Possibly the target has been engaged in a trace run started |
5029 | previously; find out where things are at. */ | |
f6ac5f3d | 5030 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 5031 | { |
00bf0b85 | 5032 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 5033 | |
00bf0b85 SS |
5034 | if (current_trace_status ()->running) |
5035 | printf_filtered (_("Trace is already running on the target.\n")); | |
5036 | ||
f6ac5f3d | 5037 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
5038 | |
5039 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
5040 | } |
5041 | ||
c0272db5 TW |
5042 | /* Possibly the target has been engaged in a btrace record started |
5043 | previously; find out where things are at. */ | |
5044 | remote_btrace_maybe_reopen (); | |
5045 | ||
288712bb AB |
5046 | return true; |
5047 | } | |
5048 | ||
5049 | /* Start the remote connection and sync state. */ | |
1e51243a | 5050 | |
288712bb AB |
5051 | void |
5052 | remote_target::start_remote (int from_tty, int extended_p) | |
5053 | { | |
5054 | if (start_remote_1 (from_tty, extended_p) | |
5055 | && breakpoints_should_be_inserted_now ()) | |
50c71eaf | 5056 | insert_breakpoints (); |
c906108c SS |
5057 | } |
5058 | ||
121b3efd PA |
5059 | const char * |
5060 | remote_target::connection_string () | |
5061 | { | |
5062 | remote_state *rs = get_remote_state (); | |
5063 | ||
5064 | if (rs->remote_desc->name != NULL) | |
5065 | return rs->remote_desc->name; | |
5066 | else | |
5067 | return NULL; | |
5068 | } | |
5069 | ||
c906108c SS |
5070 | /* Open a connection to a remote debugger. |
5071 | NAME is the filename used for communication. */ | |
5072 | ||
f6ac5f3d PA |
5073 | void |
5074 | remote_target::open (const char *name, int from_tty) | |
c906108c | 5075 | { |
f6ac5f3d | 5076 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
5077 | } |
5078 | ||
c906108c SS |
5079 | /* Open a connection to a remote debugger using the extended |
5080 | remote gdb protocol. NAME is the filename used for communication. */ | |
5081 | ||
f6ac5f3d PA |
5082 | void |
5083 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 5084 | { |
f6ac5f3d | 5085 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
5086 | } |
5087 | ||
ca4f7f8b PA |
5088 | /* Reset all packets back to "unknown support". Called when opening a |
5089 | new connection to a remote target. */ | |
c906108c | 5090 | |
d471ea57 | 5091 | static void |
ca4f7f8b | 5092 | reset_all_packet_configs_support (void) |
d471ea57 AC |
5093 | { |
5094 | int i; | |
a744cf53 | 5095 | |
444abaca | 5096 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 5097 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
5098 | } |
5099 | ||
ca4f7f8b PA |
5100 | /* Initialize all packet configs. */ |
5101 | ||
5102 | static void | |
5103 | init_all_packet_configs (void) | |
5104 | { | |
5105 | int i; | |
5106 | ||
5107 | for (i = 0; i < PACKET_MAX; i++) | |
5108 | { | |
5109 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
5110 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
5111 | } | |
5112 | } | |
5113 | ||
23860348 | 5114 | /* Symbol look-up. */ |
dc8acb97 | 5115 | |
6b8edb51 PA |
5116 | void |
5117 | remote_target::remote_check_symbols () | |
dc8acb97 | 5118 | { |
8d64371b | 5119 | char *tmp; |
dc8acb97 MS |
5120 | int end; |
5121 | ||
63154eca PA |
5122 | /* The remote side has no concept of inferiors that aren't running |
5123 | yet, it only knows about running processes. If we're connected | |
5124 | but our current inferior is not running, we should not invite the | |
5125 | remote target to request symbol lookups related to its | |
5126 | (unrelated) current process. */ | |
55f6301a | 5127 | if (!target_has_execution ()) |
63154eca PA |
5128 | return; |
5129 | ||
4082afcc | 5130 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
5131 | return; |
5132 | ||
63154eca PA |
5133 | /* Make sure the remote is pointing at the right process. Note |
5134 | there's no way to select "no process". */ | |
3c9c4b83 PA |
5135 | set_general_process (); |
5136 | ||
6d820c5c DJ |
5137 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
5138 | because we need both at the same time. */ | |
66644cd3 | 5139 | gdb::char_vector msg (get_remote_packet_size ()); |
8d64371b | 5140 | gdb::char_vector reply (get_remote_packet_size ()); |
6d820c5c | 5141 | |
23860348 | 5142 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
5143 | |
5144 | putpkt ("qSymbol::"); | |
8d64371b | 5145 | getpkt (&reply, 0); |
28170b88 | 5146 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); |
dc8acb97 | 5147 | |
8d64371b | 5148 | while (startswith (reply.data (), "qSymbol:")) |
dc8acb97 | 5149 | { |
77e371c0 TT |
5150 | struct bound_minimal_symbol sym; |
5151 | ||
dc8acb97 | 5152 | tmp = &reply[8]; |
66644cd3 AB |
5153 | end = hex2bin (tmp, reinterpret_cast <gdb_byte *> (msg.data ()), |
5154 | strlen (tmp) / 2); | |
dc8acb97 | 5155 | msg[end] = '\0'; |
66644cd3 | 5156 | sym = lookup_minimal_symbol (msg.data (), NULL, NULL); |
3b7344d5 | 5157 | if (sym.minsym == NULL) |
66644cd3 AB |
5158 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol::%s", |
5159 | &reply[8]); | |
dc8acb97 | 5160 | else |
2bbe3cc1 | 5161 | { |
f5656ead | 5162 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 5163 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
5164 | |
5165 | /* If this is a function address, return the start of code | |
5166 | instead of any data function descriptor. */ | |
328d42d8 SM |
5167 | sym_addr = gdbarch_convert_from_func_ptr_addr |
5168 | (target_gdbarch (), sym_addr, current_inferior ()->top_target ()); | |
2bbe3cc1 | 5169 | |
66644cd3 | 5170 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol:%s:%s", |
5af949e3 | 5171 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 | 5172 | } |
66644cd3 AB |
5173 | |
5174 | putpkt (msg.data ()); | |
8d64371b | 5175 | getpkt (&reply, 0); |
dc8acb97 MS |
5176 | } |
5177 | } | |
5178 | ||
9db8d71f | 5179 | static struct serial * |
baa336ce | 5180 | remote_serial_open (const char *name) |
9db8d71f DJ |
5181 | { |
5182 | static int udp_warning = 0; | |
5183 | ||
5184 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
5185 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
5186 | serial connection is reliable and not the serial connection promising | |
5187 | to be. */ | |
61012eef | 5188 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 5189 | { |
3e43a32a MS |
5190 | warning (_("The remote protocol may be unreliable over UDP.\n" |
5191 | "Some events may be lost, rendering further debugging " | |
5192 | "impossible.")); | |
9db8d71f DJ |
5193 | udp_warning = 1; |
5194 | } | |
5195 | ||
5196 | return serial_open (name); | |
5197 | } | |
5198 | ||
d914c394 SS |
5199 | /* Inform the target of our permission settings. The permission flags |
5200 | work without this, but if the target knows the settings, it can do | |
5201 | a couple things. First, it can add its own check, to catch cases | |
5202 | that somehow manage to get by the permissions checks in target | |
5203 | methods. Second, if the target is wired to disallow particular | |
5204 | settings (for instance, a system in the field that is not set up to | |
5205 | be able to stop at a breakpoint), it can object to any unavailable | |
5206 | permissions. */ | |
5207 | ||
5208 | void | |
f6ac5f3d | 5209 | remote_target::set_permissions () |
d914c394 SS |
5210 | { |
5211 | struct remote_state *rs = get_remote_state (); | |
5212 | ||
8d64371b | 5213 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAllow:" |
bba74b36 YQ |
5214 | "WriteReg:%x;WriteMem:%x;" |
5215 | "InsertBreak:%x;InsertTrace:%x;" | |
5216 | "InsertFastTrace:%x;Stop:%x", | |
5217 | may_write_registers, may_write_memory, | |
5218 | may_insert_breakpoints, may_insert_tracepoints, | |
5219 | may_insert_fast_tracepoints, may_stop); | |
d914c394 | 5220 | putpkt (rs->buf); |
8d64371b | 5221 | getpkt (&rs->buf, 0); |
d914c394 SS |
5222 | |
5223 | /* If the target didn't like the packet, warn the user. Do not try | |
5224 | to undo the user's settings, that would just be maddening. */ | |
8d64371b TT |
5225 | if (strcmp (rs->buf.data (), "OK") != 0) |
5226 | warning (_("Remote refused setting permissions with: %s"), | |
5227 | rs->buf.data ()); | |
d914c394 SS |
5228 | } |
5229 | ||
be2a5f71 DJ |
5230 | /* This type describes each known response to the qSupported |
5231 | packet. */ | |
5232 | struct protocol_feature | |
5233 | { | |
5234 | /* The name of this protocol feature. */ | |
5235 | const char *name; | |
5236 | ||
5237 | /* The default for this protocol feature. */ | |
5238 | enum packet_support default_support; | |
5239 | ||
5240 | /* The function to call when this feature is reported, or after | |
5241 | qSupported processing if the feature is not supported. | |
5242 | The first argument points to this structure. The second | |
5243 | argument indicates whether the packet requested support be | |
5244 | enabled, disabled, or probed (or the default, if this function | |
5245 | is being called at the end of processing and this feature was | |
5246 | not reported). The third argument may be NULL; if not NULL, it | |
5247 | is a NUL-terminated string taken from the packet following | |
5248 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5249 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5250 | enum packet_support, const char *); | |
be2a5f71 DJ |
5251 | |
5252 | /* The corresponding packet for this feature. Only used if | |
5253 | FUNC is remote_supported_packet. */ | |
5254 | int packet; | |
5255 | }; | |
5256 | ||
be2a5f71 | 5257 | static void |
6b8edb51 PA |
5258 | remote_supported_packet (remote_target *remote, |
5259 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5260 | enum packet_support support, |
5261 | const char *argument) | |
5262 | { | |
5263 | if (argument) | |
5264 | { | |
5265 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5266 | " \"%s\"."), feature->name); | |
5267 | return; | |
5268 | } | |
5269 | ||
4082afcc | 5270 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5271 | } |
be2a5f71 | 5272 | |
6b8edb51 PA |
5273 | void |
5274 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5275 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5276 | { |
5277 | struct remote_state *rs = get_remote_state (); | |
5278 | ||
5279 | int packet_size; | |
5280 | char *value_end; | |
5281 | ||
5282 | if (support != PACKET_ENABLE) | |
5283 | return; | |
5284 | ||
5285 | if (value == NULL || *value == '\0') | |
5286 | { | |
5287 | warning (_("Remote target reported \"%s\" without a size."), | |
5288 | feature->name); | |
5289 | return; | |
5290 | } | |
5291 | ||
5292 | errno = 0; | |
5293 | packet_size = strtol (value, &value_end, 16); | |
5294 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5295 | { | |
5296 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5297 | feature->name, value); | |
5298 | return; | |
5299 | } | |
5300 | ||
be2a5f71 DJ |
5301 | /* Record the new maximum packet size. */ |
5302 | rs->explicit_packet_size = packet_size; | |
5303 | } | |
5304 | ||
cb8c24b6 | 5305 | static void |
6b8edb51 PA |
5306 | remote_packet_size (remote_target *remote, const protocol_feature *feature, |
5307 | enum packet_support support, const char *value) | |
5308 | { | |
5309 | remote->remote_packet_size (feature, support, value); | |
5310 | } | |
5311 | ||
dc473cfb | 5312 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5313 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5314 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5315 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5316 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5317 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5318 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5319 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5320 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5321 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5322 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5323 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5324 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5325 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5326 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5327 | PACKET_qXfer_memory_map }, |
07e059b5 VP |
5328 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5329 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5330 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5331 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5332 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5333 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5334 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5335 | PACKET_QPassSignals }, | |
82075af2 JS |
5336 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5337 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5338 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5339 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5340 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5341 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5342 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5343 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5344 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5345 | PACKET_QEnvironmentHexEncoded }, | |
5346 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5347 | PACKET_QEnvironmentReset }, | |
5348 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5349 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5350 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5351 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5352 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5353 | PACKET_multiprocess_feature }, | |
5354 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5355 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5356 | PACKET_qXfer_siginfo_read }, | |
5357 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5358 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5359 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5360 | PACKET_ConditionalTracepoints }, |
4082afcc | 5361 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5362 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5363 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5364 | PACKET_BreakpointCommands }, |
4082afcc | 5365 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5366 | PACKET_FastTracepoints }, |
4082afcc | 5367 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5368 | PACKET_StaticTracepoints }, |
4082afcc | 5369 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5370 | PACKET_InstallInTrace}, |
4082afcc PA |
5371 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5372 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5373 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5374 | PACKET_bc }, | |
5375 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5376 | PACKET_bs }, | |
409873ef SS |
5377 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5378 | PACKET_TracepointSource }, | |
d914c394 SS |
5379 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5380 | PACKET_QAllow }, | |
4082afcc PA |
5381 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5382 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5383 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5384 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5385 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5386 | PACKET_qXfer_uib }, | |
03583c20 UW |
5387 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5388 | PACKET_QDisableRandomization }, | |
d1feda86 | 5389 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5390 | { "QTBuffer:size", PACKET_DISABLE, |
5391 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5392 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5393 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5394 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5395 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5396 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5397 | PACKET_qXfer_btrace }, |
5398 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5399 | PACKET_qXfer_btrace_conf }, |
5400 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5401 | PACKET_Qbtrace_conf_bts_size }, |
5402 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5403 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5404 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5405 | PACKET_fork_event_feature }, | |
5406 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5407 | PACKET_vfork_event_feature }, | |
94585166 DB |
5408 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5409 | PACKET_exec_event_feature }, | |
b20a6524 | 5410 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5411 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5412 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5413 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5414 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
2c2e7f87 LM |
5415 | { "memory-tagging", PACKET_DISABLE, remote_supported_packet, |
5416 | PACKET_memory_tagging_feature }, | |
be2a5f71 DJ |
5417 | }; |
5418 | ||
c8d5aac9 L |
5419 | static char *remote_support_xml; |
5420 | ||
5421 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5422 | ||
5423 | void | |
6e39997a | 5424 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5425 | { |
5426 | #if defined(HAVE_LIBEXPAT) | |
5427 | if (remote_support_xml == NULL) | |
c4f7c687 | 5428 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5429 | else |
5430 | { | |
5431 | char *copy = xstrdup (remote_support_xml + 13); | |
ca3a04f6 CB |
5432 | char *saveptr; |
5433 | char *p = strtok_r (copy, ",", &saveptr); | |
c8d5aac9 L |
5434 | |
5435 | do | |
5436 | { | |
5437 | if (strcmp (p, xml) == 0) | |
5438 | { | |
5439 | /* already there */ | |
5440 | xfree (copy); | |
5441 | return; | |
5442 | } | |
5443 | } | |
ca3a04f6 | 5444 | while ((p = strtok_r (NULL, ",", &saveptr)) != NULL); |
c8d5aac9 L |
5445 | xfree (copy); |
5446 | ||
94b0dee1 PA |
5447 | remote_support_xml = reconcat (remote_support_xml, |
5448 | remote_support_xml, ",", xml, | |
5449 | (char *) NULL); | |
c8d5aac9 L |
5450 | } |
5451 | #endif | |
5452 | } | |
5453 | ||
69b6ecb0 TT |
5454 | static void |
5455 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5456 | { |
69b6ecb0 TT |
5457 | if (!msg->empty ()) |
5458 | msg->append (";"); | |
5459 | msg->append (append); | |
c8d5aac9 L |
5460 | } |
5461 | ||
6b8edb51 PA |
5462 | void |
5463 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5464 | { |
5465 | struct remote_state *rs = get_remote_state (); | |
5466 | char *next; | |
5467 | int i; | |
5468 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5469 | ||
5470 | /* The packet support flags are handled differently for this packet | |
5471 | than for most others. We treat an error, a disabled packet, and | |
5472 | an empty response identically: any features which must be reported | |
5473 | to be used will be automatically disabled. An empty buffer | |
5474 | accomplishes this, since that is also the representation for a list | |
5475 | containing no features. */ | |
5476 | ||
5477 | rs->buf[0] = 0; | |
4082afcc | 5478 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5479 | { |
69b6ecb0 | 5480 | std::string q; |
c8d5aac9 | 5481 | |
73b8c1fd | 5482 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5483 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5484 | |
f7e6eed5 | 5485 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5486 | remote_query_supported_append (&q, "swbreak+"); |
f7e6eed5 | 5487 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5488 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5489 | |
69b6ecb0 | 5490 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5491 | |
8020350c DB |
5492 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
5493 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5494 | remote_query_supported_append (&q, "fork-events+"); |
8020350c DB |
5495 | if (packet_set_cmd_state (PACKET_vfork_event_feature) |
5496 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5497 | remote_query_supported_append (&q, "vfork-events+"); |
8020350c DB |
5498 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
5499 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5500 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5501 | |
750ce8d1 | 5502 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5503 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5504 | |
65706a29 | 5505 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5506 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5507 | |
f2faf941 | 5508 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5509 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5510 | |
2c2e7f87 LM |
5511 | if (packet_set_cmd_state (PACKET_memory_tagging_feature) |
5512 | != AUTO_BOOLEAN_FALSE) | |
5513 | remote_query_supported_append (&q, "memory-tagging+"); | |
5514 | ||
b35d5edb PA |
5515 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5516 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5517 | if (remote_support_xml != NULL |
5518 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
69b6ecb0 | 5519 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5520 | |
69b6ecb0 TT |
5521 | q = "qSupported:" + q; |
5522 | putpkt (q.c_str ()); | |
94b0dee1 | 5523 | |
8d64371b | 5524 | getpkt (&rs->buf, 0); |
be2a5f71 DJ |
5525 | |
5526 | /* If an error occured, warn, but do not return - just reset the | |
5527 | buffer to empty and go on to disable features. */ | |
5528 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5529 | == PACKET_ERROR) | |
5530 | { | |
8d64371b | 5531 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
be2a5f71 DJ |
5532 | rs->buf[0] = 0; |
5533 | } | |
5534 | } | |
5535 | ||
5536 | memset (seen, 0, sizeof (seen)); | |
5537 | ||
8d64371b | 5538 | next = rs->buf.data (); |
be2a5f71 DJ |
5539 | while (*next) |
5540 | { | |
5541 | enum packet_support is_supported; | |
5542 | char *p, *end, *name_end, *value; | |
5543 | ||
5544 | /* First separate out this item from the rest of the packet. If | |
5545 | there's another item after this, we overwrite the separator | |
5546 | (terminated strings are much easier to work with). */ | |
5547 | p = next; | |
5548 | end = strchr (p, ';'); | |
5549 | if (end == NULL) | |
5550 | { | |
5551 | end = p + strlen (p); | |
5552 | next = end; | |
5553 | } | |
5554 | else | |
5555 | { | |
89be2091 DJ |
5556 | *end = '\0'; |
5557 | next = end + 1; | |
5558 | ||
be2a5f71 DJ |
5559 | if (end == p) |
5560 | { | |
5561 | warning (_("empty item in \"qSupported\" response")); | |
5562 | continue; | |
5563 | } | |
be2a5f71 DJ |
5564 | } |
5565 | ||
5566 | name_end = strchr (p, '='); | |
5567 | if (name_end) | |
5568 | { | |
5569 | /* This is a name=value entry. */ | |
5570 | is_supported = PACKET_ENABLE; | |
5571 | value = name_end + 1; | |
5572 | *name_end = '\0'; | |
5573 | } | |
5574 | else | |
5575 | { | |
5576 | value = NULL; | |
5577 | switch (end[-1]) | |
5578 | { | |
5579 | case '+': | |
5580 | is_supported = PACKET_ENABLE; | |
5581 | break; | |
5582 | ||
5583 | case '-': | |
5584 | is_supported = PACKET_DISABLE; | |
5585 | break; | |
5586 | ||
5587 | case '?': | |
5588 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5589 | break; | |
5590 | ||
5591 | default: | |
3e43a32a MS |
5592 | warning (_("unrecognized item \"%s\" " |
5593 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5594 | continue; |
5595 | } | |
5596 | end[-1] = '\0'; | |
5597 | } | |
5598 | ||
5599 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5600 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5601 | { | |
5602 | const struct protocol_feature *feature; | |
5603 | ||
5604 | seen[i] = 1; | |
5605 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5606 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5607 | break; |
5608 | } | |
5609 | } | |
5610 | ||
5611 | /* If we increased the packet size, make sure to increase the global | |
5612 | buffer size also. We delay this until after parsing the entire | |
5613 | qSupported packet, because this is the same buffer we were | |
5614 | parsing. */ | |
8d64371b TT |
5615 | if (rs->buf.size () < rs->explicit_packet_size) |
5616 | rs->buf.resize (rs->explicit_packet_size); | |
be2a5f71 DJ |
5617 | |
5618 | /* Handle the defaults for unmentioned features. */ | |
5619 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5620 | if (!seen[i]) | |
5621 | { | |
5622 | const struct protocol_feature *feature; | |
5623 | ||
5624 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5625 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5626 | } |
5627 | } | |
5628 | ||
048094ac PA |
5629 | /* Serial QUIT handler for the remote serial descriptor. |
5630 | ||
5631 | Defers handling a Ctrl-C until we're done with the current | |
5632 | command/response packet sequence, unless: | |
5633 | ||
5634 | - We're setting up the connection. Don't send a remote interrupt | |
5635 | request, as we're not fully synced yet. Quit immediately | |
5636 | instead. | |
5637 | ||
5638 | - The target has been resumed in the foreground | |
223ffa71 | 5639 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5640 | packet, and we're blocked waiting for the stop reply, thus a |
5641 | Ctrl-C should be immediately sent to the target. | |
5642 | ||
5643 | - We get a second Ctrl-C while still within the same serial read or | |
5644 | write. In that case the serial is seemingly wedged --- offer to | |
5645 | quit/disconnect. | |
5646 | ||
5647 | - We see a second Ctrl-C without target response, after having | |
5648 | previously interrupted the target. In that case the target/stub | |
5649 | is probably wedged --- offer to quit/disconnect. | |
5650 | */ | |
5651 | ||
6b8edb51 PA |
5652 | void |
5653 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5654 | { |
5655 | struct remote_state *rs = get_remote_state (); | |
5656 | ||
5657 | if (check_quit_flag ()) | |
5658 | { | |
5659 | /* If we're starting up, we're not fully synced yet. Quit | |
5660 | immediately. */ | |
5661 | if (rs->starting_up) | |
5662 | quit (); | |
5663 | else if (rs->got_ctrlc_during_io) | |
5664 | { | |
5665 | if (query (_("The target is not responding to GDB commands.\n" | |
5666 | "Stop debugging it? "))) | |
5b6d1e4f | 5667 | remote_unpush_and_throw (this); |
048094ac PA |
5668 | } |
5669 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5670 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5671 | interrupt_query (); |
5672 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5673 | an interrupt request. */ | |
223ffa71 | 5674 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5675 | target_interrupt (); |
048094ac PA |
5676 | else |
5677 | rs->got_ctrlc_during_io = 1; | |
5678 | } | |
5679 | } | |
5680 | ||
6b8edb51 PA |
5681 | /* The remote_target that is current while the quit handler is |
5682 | overridden with remote_serial_quit_handler. */ | |
5683 | static remote_target *curr_quit_handler_target; | |
5684 | ||
5685 | static void | |
5686 | remote_serial_quit_handler () | |
5687 | { | |
5688 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5689 | } | |
5690 | ||
5b6d1e4f PA |
5691 | /* Remove the remote target from the target stack of each inferior |
5692 | that is using it. Upper targets depend on it so remove them | |
5693 | first. */ | |
78a095c3 JK |
5694 | |
5695 | static void | |
5b6d1e4f | 5696 | remote_unpush_target (remote_target *target) |
78a095c3 | 5697 | { |
5b6d1e4f PA |
5698 | /* We have to unpush the target from all inferiors, even those that |
5699 | aren't running. */ | |
5700 | scoped_restore_current_inferior restore_current_inferior; | |
5701 | ||
5702 | for (inferior *inf : all_inferiors (target)) | |
5703 | { | |
5704 | switch_to_inferior_no_thread (inf); | |
5705 | pop_all_targets_at_and_above (process_stratum); | |
5706 | generic_mourn_inferior (); | |
5707 | } | |
d7cb0ef3 PA |
5708 | |
5709 | /* Don't rely on target_close doing this when the target is popped | |
5710 | from the last remote inferior above, because something may be | |
5711 | holding a reference to the target higher up on the stack, meaning | |
5712 | target_close won't be called yet. We lost the connection to the | |
5713 | target, so clear these now, otherwise we may later throw | |
5714 | TARGET_CLOSE_ERROR while trying to tell the remote target to | |
5715 | close the file. */ | |
5716 | fileio_handles_invalidate_target (target); | |
78a095c3 | 5717 | } |
be2a5f71 | 5718 | |
048094ac | 5719 | static void |
5b6d1e4f | 5720 | remote_unpush_and_throw (remote_target *target) |
048094ac | 5721 | { |
5b6d1e4f | 5722 | remote_unpush_target (target); |
048094ac PA |
5723 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
5724 | } | |
5725 | ||
f6ac5f3d PA |
5726 | void |
5727 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5728 | { |
6b8edb51 | 5729 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5730 | |
c906108c | 5731 | if (name == 0) |
8a3fe4f8 | 5732 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5733 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5734 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5735 | |
2d717e4f | 5736 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5737 | Ask this question first, before target_preopen has a chance to kill |
5738 | anything. */ | |
55f6301a | 5739 | if (curr_remote != NULL && !target_has_execution ()) |
2d717e4f | 5740 | { |
78a095c3 JK |
5741 | if (from_tty |
5742 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5743 | error (_("Still connected.")); |
5744 | } | |
5745 | ||
78a095c3 | 5746 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5747 | target_preopen (from_tty); |
5748 | ||
ad9a8f3f | 5749 | remote_fileio_reset (); |
1dd41f16 | 5750 | reopen_exec_file (); |
9dec38d3 | 5751 | reread_symbols (from_tty); |
1dd41f16 | 5752 | |
6b8edb51 PA |
5753 | remote_target *remote |
5754 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5755 | target_ops_up target_holder (remote); | |
5756 | ||
5757 | remote_state *rs = remote->get_remote_state (); | |
5758 | ||
5759 | /* See FIXME above. */ | |
5760 | if (!target_async_permitted) | |
5761 | rs->wait_forever_enabled_p = 1; | |
5762 | ||
5d93a237 TT |
5763 | rs->remote_desc = remote_serial_open (name); |
5764 | if (!rs->remote_desc) | |
c906108c SS |
5765 | perror_with_name (name); |
5766 | ||
5767 | if (baud_rate != -1) | |
5768 | { | |
5d93a237 | 5769 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5770 | { |
9b74d5d3 KB |
5771 | /* The requested speed could not be set. Error out to |
5772 | top level after closing remote_desc. Take care to | |
5773 | set remote_desc to NULL to avoid closing remote_desc | |
5774 | more than once. */ | |
5d93a237 TT |
5775 | serial_close (rs->remote_desc); |
5776 | rs->remote_desc = NULL; | |
c906108c SS |
5777 | perror_with_name (name); |
5778 | } | |
5779 | } | |
5780 | ||
236af5e3 | 5781 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5782 | serial_raw (rs->remote_desc); |
c906108c SS |
5783 | |
5784 | /* If there is something sitting in the buffer we might take it as a | |
5785 | response to a command, which would be bad. */ | |
5d93a237 | 5786 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5787 | |
5788 | if (from_tty) | |
5789 | { | |
5790 | puts_filtered ("Remote debugging using "); | |
5791 | puts_filtered (name); | |
5792 | puts_filtered ("\n"); | |
5793 | } | |
d9f719f1 | 5794 | |
6b8edb51 | 5795 | /* Switch to using the remote target now. */ |
02980c56 | 5796 | current_inferior ()->push_target (std::move (target_holder)); |
c906108c | 5797 | |
74531fed | 5798 | /* Register extra event sources in the event loop. */ |
6b8edb51 | 5799 | rs->remote_async_inferior_event_token |
baa8575b | 5800 | = create_async_event_handler (remote_async_inferior_event_handler, nullptr, |
db20ebdf | 5801 | "remote"); |
6b8edb51 | 5802 | rs->notif_state = remote_notif_state_allocate (remote); |
74531fed | 5803 | |
be2a5f71 DJ |
5804 | /* Reset the target state; these things will be queried either by |
5805 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5806 | reset_all_packet_configs_support (); |
74531fed | 5807 | rs->cached_wait_status = 0; |
be2a5f71 | 5808 | rs->explicit_packet_size = 0; |
a6f3e723 | 5809 | rs->noack_mode = 0; |
82f73884 | 5810 | rs->extended = extended_p; |
e24a49d8 | 5811 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5812 | rs->ctrlc_pending_p = 0; |
048094ac | 5813 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5814 | |
47f8a51d TT |
5815 | rs->general_thread = not_sent_ptid; |
5816 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5817 | rs->remote_traceframe_number = -1; |
c906108c | 5818 | |
3a00c802 PA |
5819 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5820 | ||
9d1f7ab2 | 5821 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5822 | rs->use_threadinfo_query = 1; |
5823 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5824 | |
dd194f6b | 5825 | rs->readahead_cache.invalidate (); |
80152258 | 5826 | |
c6ebd6cf | 5827 | if (target_async_permitted) |
92d1e331 | 5828 | { |
92d1e331 DJ |
5829 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5830 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5831 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5832 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5833 | around this. Eventually a mechanism that allows |
92d1e331 | 5834 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5835 | implemented. */ |
6b8edb51 | 5836 | rs->wait_forever_enabled_p = 0; |
92d1e331 DJ |
5837 | } |
5838 | ||
23860348 | 5839 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5840 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5841 | |
36918e70 | 5842 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5843 | target (we'd otherwise be in an inconsistent state) and then |
5844 | propogate the error on up the exception chain. This ensures that | |
5845 | the caller doesn't stumble along blindly assuming that the | |
5846 | function succeeded. The CLI doesn't have this problem but other | |
5847 | UI's, such as MI do. | |
36918e70 AC |
5848 | |
5849 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5850 | this function should return an error indication letting the | |
ce2826aa | 5851 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5852 | ``target remote'' is directly wired to this function making that |
5853 | impossible. On a positive note, the CLI side of this problem has | |
5854 | been fixed - the function set_cmd_context() makes it possible for | |
5855 | all the ``target ....'' commands to share a common callback | |
5856 | function. See cli-dump.c. */ | |
109c3e39 | 5857 | { |
2d717e4f | 5858 | |
a70b8144 | 5859 | try |
04bd08de | 5860 | { |
6b8edb51 | 5861 | remote->start_remote (from_tty, extended_p); |
04bd08de | 5862 | } |
230d2906 | 5863 | catch (const gdb_exception &ex) |
109c3e39 | 5864 | { |
c8d104ad PA |
5865 | /* Pop the partially set up target - unless something else did |
5866 | already before throwing the exception. */ | |
6b8edb51 | 5867 | if (ex.error != TARGET_CLOSE_ERROR) |
5b6d1e4f | 5868 | remote_unpush_target (remote); |
eedc3f4f | 5869 | throw; |
109c3e39 AC |
5870 | } |
5871 | } | |
c906108c | 5872 | |
6b8edb51 | 5873 | remote_btrace_reset (rs); |
f4abbc16 | 5874 | |
c6ebd6cf | 5875 | if (target_async_permitted) |
6b8edb51 | 5876 | rs->wait_forever_enabled_p = 1; |
43ff13b4 JM |
5877 | } |
5878 | ||
28561a65 | 5879 | /* Determine if WS represents a fork status. */ |
a4543480 | 5880 | |
28561a65 SM |
5881 | static bool |
5882 | is_fork_status (target_waitkind kind) | |
a4543480 | 5883 | { |
28561a65 SM |
5884 | return (kind == TARGET_WAITKIND_FORKED |
5885 | || kind == TARGET_WAITKIND_VFORKED); | |
a4543480 SM |
5886 | } |
5887 | ||
28561a65 SM |
5888 | /* Return THREAD's pending status if it is a pending fork parent, else |
5889 | return nullptr. */ | |
a4543480 | 5890 | |
28561a65 | 5891 | static const target_waitstatus * |
a4543480 SM |
5892 | thread_pending_fork_status (struct thread_info *thread) |
5893 | { | |
28561a65 SM |
5894 | const target_waitstatus &ws |
5895 | = (thread->has_pending_waitstatus () | |
5896 | ? thread->pending_waitstatus () | |
5897 | : thread->pending_follow); | |
a4543480 | 5898 | |
28561a65 SM |
5899 | if (!is_fork_status (ws.kind ())) |
5900 | return nullptr; | |
a4543480 | 5901 | |
28561a65 | 5902 | return &ws; |
a4543480 SM |
5903 | } |
5904 | ||
de0d863e DB |
5905 | /* Detach the specified process. */ |
5906 | ||
6b8edb51 PA |
5907 | void |
5908 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
5909 | { |
5910 | struct remote_state *rs = get_remote_state (); | |
5911 | ||
4c7333b3 PA |
5912 | /* This should not be necessary, but the handling for D;PID in |
5913 | GDBserver versions prior to 8.2 incorrectly assumes that the | |
5914 | selected process points to the same process we're detaching, | |
5915 | leading to misbehavior (and possibly GDBserver crashing) when it | |
5916 | does not. Since it's easy and cheap, work around it by forcing | |
5917 | GDBserver to select GDB's current process. */ | |
5918 | set_general_process (); | |
5919 | ||
de0d863e | 5920 | if (remote_multi_process_p (rs)) |
8d64371b | 5921 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "D;%x", pid); |
de0d863e | 5922 | else |
8d64371b | 5923 | strcpy (rs->buf.data (), "D"); |
de0d863e DB |
5924 | |
5925 | putpkt (rs->buf); | |
8d64371b | 5926 | getpkt (&rs->buf, 0); |
de0d863e DB |
5927 | |
5928 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5929 | ; | |
5930 | else if (rs->buf[0] == '\0') | |
5931 | error (_("Remote doesn't know how to detach")); | |
5932 | else | |
5933 | error (_("Can't detach process.")); | |
5934 | } | |
5935 | ||
5936 | /* This detaches a program to which we previously attached, using | |
5937 | inferior_ptid to identify the process. After this is done, GDB | |
5938 | can be used to debug some other program. We better not have left | |
5939 | any breakpoints in the target program or it'll die when it hits | |
5940 | one. */ | |
c906108c | 5941 | |
6b8edb51 | 5942 | void |
00431a78 | 5943 | remote_target::remote_detach_1 (inferior *inf, int from_tty) |
c906108c | 5944 | { |
e99b03dc | 5945 | int pid = inferior_ptid.pid (); |
d01949b6 | 5946 | struct remote_state *rs = get_remote_state (); |
de0d863e | 5947 | int is_fork_parent; |
c906108c | 5948 | |
55f6301a | 5949 | if (!target_has_execution ()) |
2d717e4f DJ |
5950 | error (_("No process to detach from.")); |
5951 | ||
0f48b757 | 5952 | target_announce_detach (from_tty); |
7cee1e54 | 5953 | |
e87f0fe8 PA |
5954 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) |
5955 | { | |
5956 | /* If we're in breakpoints-always-inserted mode, or the inferior | |
5957 | is running, we have to remove breakpoints before detaching. | |
5958 | We don't do this in common code instead because not all | |
5959 | targets support removing breakpoints while the target is | |
5960 | running. The remote target / gdbserver does, though. */ | |
5961 | remove_breakpoints_inf (current_inferior ()); | |
5962 | } | |
5963 | ||
c906108c | 5964 | /* Tell the remote target to detach. */ |
de0d863e | 5965 | remote_detach_pid (pid); |
82f73884 | 5966 | |
8020350c | 5967 | /* Exit only if this is the only active inferior. */ |
5b6d1e4f | 5968 | if (from_tty && !rs->extended && number_of_live_inferiors (this) == 1) |
7cee1e54 | 5969 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5970 | |
df5ad102 SM |
5971 | /* See if any thread of the inferior we are detaching has a pending fork |
5972 | status. In that case, we must detach from the child resulting from | |
5973 | that fork. */ | |
5974 | for (thread_info *thread : inf->non_exited_threads ()) | |
5975 | { | |
5976 | const target_waitstatus *ws = thread_pending_fork_status (thread); | |
5977 | ||
5978 | if (ws == nullptr) | |
5979 | continue; | |
5980 | ||
5981 | remote_detach_pid (ws->child_ptid ().pid ()); | |
5982 | } | |
5983 | ||
5984 | /* Check also for any pending fork events in the stop reply queue. */ | |
5985 | remote_notif_get_pending_events (¬if_client_stop); | |
5986 | for (stop_reply_up &reply : rs->stop_reply_queue) | |
5987 | { | |
5988 | if (reply->ptid.pid () != pid) | |
5989 | continue; | |
5990 | ||
5991 | if (!is_fork_status (reply->ws.kind ())) | |
5992 | continue; | |
5993 | ||
5994 | remote_detach_pid (reply->ws.child_ptid ().pid ()); | |
5995 | } | |
5996 | ||
5b6d1e4f | 5997 | thread_info *tp = find_thread_ptid (this, inferior_ptid); |
00431a78 | 5998 | |
de0d863e DB |
5999 | /* Check to see if we are detaching a fork parent. Note that if we |
6000 | are detaching a fork child, tp == NULL. */ | |
6001 | is_fork_parent = (tp != NULL | |
183be222 | 6002 | && tp->pending_follow.kind () == TARGET_WAITKIND_FORKED); |
de0d863e DB |
6003 | |
6004 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
6005 | breakpoints that should be available for the followed inferior. */ | |
6006 | if (!is_fork_parent) | |
f67c0c91 | 6007 | { |
249b5733 PA |
6008 | /* Save the pid as a string before mourning, since that will |
6009 | unpush the remote target, and we need the string after. */ | |
f2907e49 | 6010 | std::string infpid = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
6011 | |
6012 | target_mourn_inferior (inferior_ptid); | |
6013 | if (print_inferior_events) | |
6014 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
6015 | inf->num, infpid.c_str ()); | |
6016 | } | |
de0d863e DB |
6017 | else |
6018 | { | |
0ac55310 | 6019 | switch_to_no_thread (); |
00431a78 | 6020 | detach_inferior (current_inferior ()); |
de0d863e | 6021 | } |
2d717e4f DJ |
6022 | } |
6023 | ||
f6ac5f3d PA |
6024 | void |
6025 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 6026 | { |
00431a78 | 6027 | remote_detach_1 (inf, from_tty); |
2d717e4f DJ |
6028 | } |
6029 | ||
f6ac5f3d PA |
6030 | void |
6031 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 6032 | { |
00431a78 | 6033 | remote_detach_1 (inf, from_tty); |
de0d863e DB |
6034 | } |
6035 | ||
6036 | /* Target follow-fork function for remote targets. On entry, and | |
6037 | at return, the current inferior is the fork parent. | |
6038 | ||
6039 | Note that although this is currently only used for extended-remote, | |
6040 | it is named remote_follow_fork in anticipation of using it for the | |
6041 | remote target as well. */ | |
6042 | ||
e97007b6 | 6043 | void |
82d1f134 SM |
6044 | remote_target::follow_fork (inferior *child_inf, ptid_t child_ptid, |
6045 | target_waitkind fork_kind, bool follow_child, | |
6046 | bool detach_fork) | |
de0d863e | 6047 | { |
82d1f134 SM |
6048 | process_stratum_target::follow_fork (child_inf, child_ptid, |
6049 | fork_kind, follow_child, detach_fork); | |
6050 | ||
de0d863e DB |
6051 | struct remote_state *rs = get_remote_state (); |
6052 | ||
3a849a34 SM |
6053 | if ((fork_kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
6054 | || (fork_kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
6055 | { |
6056 | /* When following the parent and detaching the child, we detach | |
6057 | the child here. For the case of following the child and | |
6058 | detaching the parent, the detach is done in the target- | |
6059 | independent follow fork code in infrun.c. We can't use | |
6060 | target_detach when detaching an unfollowed child because | |
6061 | the client side doesn't know anything about the child. */ | |
6062 | if (detach_fork && !follow_child) | |
6063 | { | |
6064 | /* Detach the fork child. */ | |
3a849a34 | 6065 | remote_detach_pid (child_ptid.pid ()); |
de0d863e DB |
6066 | } |
6067 | } | |
c906108c SS |
6068 | } |
6069 | ||
94585166 | 6070 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
294c36eb | 6071 | in the program space of the new inferior. */ |
94585166 | 6072 | |
f6ac5f3d | 6073 | void |
294c36eb SM |
6074 | remote_target::follow_exec (inferior *follow_inf, ptid_t ptid, |
6075 | const char *execd_pathname) | |
94585166 | 6076 | { |
294c36eb SM |
6077 | process_stratum_target::follow_exec (follow_inf, ptid, execd_pathname); |
6078 | ||
94585166 DB |
6079 | /* We know that this is a target file name, so if it has the "target:" |
6080 | prefix we strip it off before saving it in the program space. */ | |
6081 | if (is_target_filename (execd_pathname)) | |
6082 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
6083 | ||
294c36eb | 6084 | set_pspace_remote_exec_file (follow_inf->pspace, execd_pathname); |
94585166 DB |
6085 | } |
6086 | ||
6ad8ae5c DJ |
6087 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
6088 | ||
f6ac5f3d PA |
6089 | void |
6090 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 6091 | { |
43ff13b4 | 6092 | if (args) |
2d717e4f | 6093 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 6094 | |
8020350c | 6095 | /* Make sure we unpush even the extended remote targets. Calling |
5b6d1e4f PA |
6096 | target_mourn_inferior won't unpush, and |
6097 | remote_target::mourn_inferior won't unpush if there is more than | |
6098 | one inferior left. */ | |
6099 | remote_unpush_target (this); | |
2d717e4f | 6100 | |
43ff13b4 JM |
6101 | if (from_tty) |
6102 | puts_filtered ("Ending remote debugging.\n"); | |
6103 | } | |
6104 | ||
2d717e4f DJ |
6105 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
6106 | be chatty about it. */ | |
6107 | ||
f6ac5f3d PA |
6108 | void |
6109 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
6110 | { |
6111 | struct remote_state *rs = get_remote_state (); | |
be86555c | 6112 | int pid; |
96ef3384 | 6113 | char *wait_status = NULL; |
2d717e4f | 6114 | |
74164c56 | 6115 | pid = parse_pid_to_attach (args); |
2d717e4f | 6116 | |
74164c56 JK |
6117 | /* Remote PID can be freely equal to getpid, do not check it here the same |
6118 | way as in other targets. */ | |
2d717e4f | 6119 | |
4082afcc | 6120 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
6121 | error (_("This target does not support attaching to a process")); |
6122 | ||
7cee1e54 PA |
6123 | if (from_tty) |
6124 | { | |
d9fa87f4 | 6125 | const char *exec_file = get_exec_file (0); |
7cee1e54 PA |
6126 | |
6127 | if (exec_file) | |
6128 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
a068643d | 6129 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
6130 | else |
6131 | printf_unfiltered (_("Attaching to %s\n"), | |
a068643d | 6132 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
6133 | } |
6134 | ||
8d64371b | 6135 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f | 6136 | putpkt (rs->buf); |
8d64371b | 6137 | getpkt (&rs->buf, 0); |
2d717e4f | 6138 | |
4082afcc PA |
6139 | switch (packet_ok (rs->buf, |
6140 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 6141 | { |
4082afcc | 6142 | case PACKET_OK: |
6efcd9a8 | 6143 | if (!target_is_non_stop_p ()) |
74531fed PA |
6144 | { |
6145 | /* Save the reply for later. */ | |
8d64371b TT |
6146 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
6147 | strcpy (wait_status, rs->buf.data ()); | |
74531fed | 6148 | } |
8d64371b | 6149 | else if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 6150 | error (_("Attaching to %s failed with: %s"), |
a068643d | 6151 | target_pid_to_str (ptid_t (pid)).c_str (), |
8d64371b | 6152 | rs->buf.data ()); |
4082afcc PA |
6153 | break; |
6154 | case PACKET_UNKNOWN: | |
6155 | error (_("This target does not support attaching to a process")); | |
6156 | default: | |
50fa3001 SDJ |
6157 | error (_("Attaching to %s failed"), |
6158 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
2d717e4f | 6159 | } |
2d717e4f | 6160 | |
0ac55310 | 6161 | switch_to_inferior_no_thread (remote_add_inferior (false, pid, 1, 0)); |
bad34192 | 6162 | |
f2907e49 | 6163 | inferior_ptid = ptid_t (pid); |
79d7f229 | 6164 | |
6efcd9a8 | 6165 | if (target_is_non_stop_p ()) |
bad34192 | 6166 | { |
bad34192 | 6167 | /* Get list of threads. */ |
f6ac5f3d | 6168 | update_thread_list (); |
82f73884 | 6169 | |
0ac55310 PA |
6170 | thread_info *thread = first_thread_of_inferior (current_inferior ()); |
6171 | if (thread != nullptr) | |
6172 | switch_to_thread (thread); | |
bad34192 PA |
6173 | |
6174 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 6175 | record_currthread (rs, minus_one_ptid); |
bad34192 | 6176 | } |
74531fed | 6177 | else |
bad34192 | 6178 | { |
0ac55310 PA |
6179 | /* Now, if we have thread information, update the main thread's |
6180 | ptid. */ | |
6181 | ptid_t curr_ptid = remote_current_thread (ptid_t (pid)); | |
bad34192 PA |
6182 | |
6183 | /* Add the main thread to the thread list. */ | |
0ac55310 PA |
6184 | thread_info *thr = add_thread_silent (this, curr_ptid); |
6185 | ||
6186 | switch_to_thread (thr); | |
6187 | ||
00aecdcf PA |
6188 | /* Don't consider the thread stopped until we've processed the |
6189 | saved stop reply. */ | |
5b6d1e4f | 6190 | set_executing (this, thr->ptid, true); |
bad34192 | 6191 | } |
c0a2216e | 6192 | |
96ef3384 UW |
6193 | /* Next, if the target can specify a description, read it. We do |
6194 | this before anything involving memory or registers. */ | |
6195 | target_find_description (); | |
6196 | ||
6efcd9a8 | 6197 | if (!target_is_non_stop_p ()) |
74531fed PA |
6198 | { |
6199 | /* Use the previously fetched status. */ | |
6200 | gdb_assert (wait_status != NULL); | |
6201 | ||
6202 | if (target_can_async_p ()) | |
6203 | { | |
722247f1 | 6204 | struct notif_event *reply |
6b8edb51 | 6205 | = remote_notif_parse (this, ¬if_client_stop, wait_status); |
74531fed | 6206 | |
722247f1 | 6207 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 6208 | |
6a3753b3 | 6209 | target_async (1); |
74531fed PA |
6210 | } |
6211 | else | |
6212 | { | |
6213 | gdb_assert (wait_status != NULL); | |
8d64371b | 6214 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
6215 | rs->cached_wait_status = 1; |
6216 | } | |
6217 | } | |
6218 | else | |
621cc310 PA |
6219 | { |
6220 | gdb_assert (wait_status == NULL); | |
6221 | ||
6222 | gdb_assert (target_can_async_p ()); | |
6223 | target_async (1); | |
6224 | } | |
2d717e4f DJ |
6225 | } |
6226 | ||
b9c1d481 AS |
6227 | /* Implementation of the to_post_attach method. */ |
6228 | ||
f6ac5f3d PA |
6229 | void |
6230 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 6231 | { |
6efcd9a8 PA |
6232 | /* Get text, data & bss offsets. */ |
6233 | get_offsets (); | |
6234 | ||
b9c1d481 AS |
6235 | /* In certain cases GDB might not have had the chance to start |
6236 | symbol lookup up until now. This could happen if the debugged | |
6237 | binary is not using shared libraries, the vsyscall page is not | |
6238 | present (on Linux) and the binary itself hadn't changed since the | |
6239 | debugging process was started. */ | |
a42d7dd8 | 6240 | if (current_program_space->symfile_object_file != NULL) |
b9c1d481 AS |
6241 | remote_check_symbols(); |
6242 | } | |
6243 | ||
c906108c | 6244 | \f |
506fb367 DJ |
6245 | /* Check for the availability of vCont. This function should also check |
6246 | the response. */ | |
c906108c | 6247 | |
6b8edb51 PA |
6248 | void |
6249 | remote_target::remote_vcont_probe () | |
c906108c | 6250 | { |
6b8edb51 | 6251 | remote_state *rs = get_remote_state (); |
2e9f7625 | 6252 | char *buf; |
6d820c5c | 6253 | |
8d64371b | 6254 | strcpy (rs->buf.data (), "vCont?"); |
2e9f7625 | 6255 | putpkt (rs->buf); |
8d64371b TT |
6256 | getpkt (&rs->buf, 0); |
6257 | buf = rs->buf.data (); | |
c906108c | 6258 | |
506fb367 | 6259 | /* Make sure that the features we assume are supported. */ |
61012eef | 6260 | if (startswith (buf, "vCont")) |
506fb367 DJ |
6261 | { |
6262 | char *p = &buf[5]; | |
750ce8d1 | 6263 | int support_c, support_C; |
506fb367 | 6264 | |
750ce8d1 YQ |
6265 | rs->supports_vCont.s = 0; |
6266 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
6267 | support_c = 0; |
6268 | support_C = 0; | |
d458bd84 | 6269 | rs->supports_vCont.t = 0; |
c1e36e3e | 6270 | rs->supports_vCont.r = 0; |
506fb367 DJ |
6271 | while (p && *p == ';') |
6272 | { | |
6273 | p++; | |
6274 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 6275 | rs->supports_vCont.s = 1; |
506fb367 | 6276 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 6277 | rs->supports_vCont.S = 1; |
506fb367 DJ |
6278 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6279 | support_c = 1; | |
6280 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
6281 | support_C = 1; | |
74531fed | 6282 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 6283 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
6284 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6285 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
6286 | |
6287 | p = strchr (p, ';'); | |
6288 | } | |
c906108c | 6289 | |
750ce8d1 YQ |
6290 | /* If c, and C are not all supported, we can't use vCont. Clearing |
6291 | BUF will make packet_ok disable the packet. */ | |
6292 | if (!support_c || !support_C) | |
506fb367 DJ |
6293 | buf[0] = 0; |
6294 | } | |
c906108c | 6295 | |
8d64371b | 6296 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCont]); |
5b6d1e4f | 6297 | rs->supports_vCont_probed = true; |
506fb367 | 6298 | } |
c906108c | 6299 | |
0d8f58ca PA |
6300 | /* Helper function for building "vCont" resumptions. Write a |
6301 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
6302 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
6303 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
6304 | resumed thread should be single-stepped and/or signalled. If PTID | |
6305 | equals minus_one_ptid, then all threads are resumed; if PTID | |
6306 | represents a process, then all threads of the process are resumed; | |
6307 | the thread to be stepped and/or signalled is given in the global | |
6308 | INFERIOR_PTID. */ | |
6309 | ||
6b8edb51 PA |
6310 | char * |
6311 | remote_target::append_resumption (char *p, char *endp, | |
6312 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
6313 | { |
6314 | struct remote_state *rs = get_remote_state (); | |
6315 | ||
a493e3e2 | 6316 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 6317 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
6318 | else if (step |
6319 | /* GDB is willing to range step. */ | |
6320 | && use_range_stepping | |
6321 | /* Target supports range stepping. */ | |
6322 | && rs->supports_vCont.r | |
6323 | /* We don't currently support range stepping multiple | |
6324 | threads with a wildcard (though the protocol allows it, | |
6325 | so stubs shouldn't make an active effort to forbid | |
6326 | it). */ | |
0e998d96 | 6327 | && !(remote_multi_process_p (rs) && ptid.is_pid ())) |
c1e36e3e PA |
6328 | { |
6329 | struct thread_info *tp; | |
6330 | ||
d7e15655 | 6331 | if (ptid == minus_one_ptid) |
c1e36e3e PA |
6332 | { |
6333 | /* If we don't know about the target thread's tid, then | |
6334 | we're resuming magic_null_ptid (see caller). */ | |
5b6d1e4f | 6335 | tp = find_thread_ptid (this, magic_null_ptid); |
c1e36e3e PA |
6336 | } |
6337 | else | |
5b6d1e4f | 6338 | tp = find_thread_ptid (this, ptid); |
c1e36e3e PA |
6339 | gdb_assert (tp != NULL); |
6340 | ||
6341 | if (tp->control.may_range_step) | |
6342 | { | |
6343 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
6344 | ||
6345 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6346 | phex_nz (tp->control.step_range_start, | |
6347 | addr_size), | |
6348 | phex_nz (tp->control.step_range_end, | |
6349 | addr_size)); | |
6350 | } | |
6351 | else | |
6352 | p += xsnprintf (p, endp - p, ";s"); | |
6353 | } | |
0d8f58ca PA |
6354 | else if (step) |
6355 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6356 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6357 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6358 | else | |
6359 | p += xsnprintf (p, endp - p, ";c"); | |
6360 | ||
0e998d96 | 6361 | if (remote_multi_process_p (rs) && ptid.is_pid ()) |
0d8f58ca PA |
6362 | { |
6363 | ptid_t nptid; | |
6364 | ||
6365 | /* All (-1) threads of process. */ | |
184ea2f7 | 6366 | nptid = ptid_t (ptid.pid (), -1); |
0d8f58ca PA |
6367 | |
6368 | p += xsnprintf (p, endp - p, ":"); | |
6369 | p = write_ptid (p, endp, nptid); | |
6370 | } | |
d7e15655 | 6371 | else if (ptid != minus_one_ptid) |
0d8f58ca PA |
6372 | { |
6373 | p += xsnprintf (p, endp - p, ":"); | |
6374 | p = write_ptid (p, endp, ptid); | |
6375 | } | |
6376 | ||
6377 | return p; | |
6378 | } | |
6379 | ||
799a2abe PA |
6380 | /* Clear the thread's private info on resume. */ |
6381 | ||
6382 | static void | |
6383 | resume_clear_thread_private_info (struct thread_info *thread) | |
6384 | { | |
6385 | if (thread->priv != NULL) | |
6386 | { | |
7aabaf9d SM |
6387 | remote_thread_info *priv = get_remote_thread_info (thread); |
6388 | ||
6389 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6390 | priv->watch_data_address = 0; | |
799a2abe PA |
6391 | } |
6392 | } | |
6393 | ||
e5ef252a PA |
6394 | /* Append a vCont continue-with-signal action for threads that have a |
6395 | non-zero stop signal. */ | |
6396 | ||
6b8edb51 PA |
6397 | char * |
6398 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6399 | ptid_t ptid) | |
e5ef252a | 6400 | { |
5b6d1e4f | 6401 | for (thread_info *thread : all_non_exited_threads (this, ptid)) |
08036331 | 6402 | if (inferior_ptid != thread->ptid |
1edb66d8 | 6403 | && thread->stop_signal () != GDB_SIGNAL_0) |
e5ef252a PA |
6404 | { |
6405 | p = append_resumption (p, endp, thread->ptid, | |
1edb66d8 SM |
6406 | 0, thread->stop_signal ()); |
6407 | thread->set_stop_signal (GDB_SIGNAL_0); | |
799a2abe | 6408 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6409 | } |
6410 | ||
6411 | return p; | |
6412 | } | |
6413 | ||
7b68ffbb PA |
6414 | /* Set the target running, using the packets that use Hc |
6415 | (c/s/C/S). */ | |
6416 | ||
6b8edb51 PA |
6417 | void |
6418 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6419 | gdb_signal siggnal) | |
7b68ffbb PA |
6420 | { |
6421 | struct remote_state *rs = get_remote_state (); | |
7b68ffbb PA |
6422 | char *buf; |
6423 | ||
6424 | rs->last_sent_signal = siggnal; | |
6425 | rs->last_sent_step = step; | |
6426 | ||
6427 | /* The c/s/C/S resume packets use Hc, so set the continue | |
6428 | thread. */ | |
d7e15655 | 6429 | if (ptid == minus_one_ptid) |
7b68ffbb PA |
6430 | set_continue_thread (any_thread_ptid); |
6431 | else | |
6432 | set_continue_thread (ptid); | |
6433 | ||
5b6d1e4f | 6434 | for (thread_info *thread : all_non_exited_threads (this)) |
7b68ffbb PA |
6435 | resume_clear_thread_private_info (thread); |
6436 | ||
8d64371b | 6437 | buf = rs->buf.data (); |
6b8edb51 | 6438 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6439 | { |
6440 | /* We don't pass signals to the target in reverse exec mode. */ | |
6441 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
6442 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
6443 | siggnal); | |
6444 | ||
6445 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
6446 | error (_("Remote reverse-step not supported.")); | |
6447 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
6448 | error (_("Remote reverse-continue not supported.")); | |
6449 | ||
6450 | strcpy (buf, step ? "bs" : "bc"); | |
6451 | } | |
6452 | else if (siggnal != GDB_SIGNAL_0) | |
6453 | { | |
6454 | buf[0] = step ? 'S' : 'C'; | |
6455 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
6456 | buf[2] = tohex (((int) siggnal) & 0xf); | |
6457 | buf[3] = '\0'; | |
6458 | } | |
6459 | else | |
6460 | strcpy (buf, step ? "s" : "c"); | |
6461 | ||
6462 | putpkt (buf); | |
6463 | } | |
6464 | ||
506fb367 DJ |
6465 | /* Resume the remote inferior by using a "vCont" packet. The thread |
6466 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
6467 | resumed thread should be single-stepped and/or signalled. If PTID |
6468 | equals minus_one_ptid, then all threads are resumed; the thread to | |
6469 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
6470 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 6471 | |
7b68ffbb PA |
6472 | This function issues a strict subset of all possible vCont commands |
6473 | at the moment. */ | |
44eaed12 | 6474 | |
6b8edb51 PA |
6475 | int |
6476 | remote_target::remote_resume_with_vcont (ptid_t ptid, int step, | |
6477 | enum gdb_signal siggnal) | |
506fb367 DJ |
6478 | { |
6479 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
6480 | char *p; |
6481 | char *endp; | |
44eaed12 | 6482 | |
7b68ffbb | 6483 | /* No reverse execution actions defined for vCont. */ |
6b8edb51 | 6484 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6485 | return 0; |
6486 | ||
4082afcc | 6487 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6488 | remote_vcont_probe (); |
44eaed12 | 6489 | |
4082afcc | 6490 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 6491 | return 0; |
44eaed12 | 6492 | |
8d64371b TT |
6493 | p = rs->buf.data (); |
6494 | endp = p + get_remote_packet_size (); | |
82f73884 | 6495 | |
506fb367 DJ |
6496 | /* If we could generate a wider range of packets, we'd have to worry |
6497 | about overflowing BUF. Should there be a generic | |
6498 | "multi-part-packet" packet? */ | |
6499 | ||
0d8f58ca PA |
6500 | p += xsnprintf (p, endp - p, "vCont"); |
6501 | ||
d7e15655 | 6502 | if (ptid == magic_null_ptid) |
c906108c | 6503 | { |
79d7f229 PA |
6504 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
6505 | so we don't have any TID numbers the inferior will | |
6506 | understand. Make sure to only send forms that do not specify | |
6507 | a TID. */ | |
a9cbf802 | 6508 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 6509 | } |
d7e15655 | 6510 | else if (ptid == minus_one_ptid || ptid.is_pid ()) |
506fb367 | 6511 | { |
0d8f58ca PA |
6512 | /* Resume all threads (of all processes, or of a single |
6513 | process), with preference for INFERIOR_PTID. This assumes | |
6514 | inferior_ptid belongs to the set of all threads we are about | |
6515 | to resume. */ | |
a493e3e2 | 6516 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 6517 | { |
0d8f58ca PA |
6518 | /* Step inferior_ptid, with or without signal. */ |
6519 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 6520 | } |
0d8f58ca | 6521 | |
e5ef252a PA |
6522 | /* Also pass down any pending signaled resumption for other |
6523 | threads not the current. */ | |
6524 | p = append_pending_thread_resumptions (p, endp, ptid); | |
6525 | ||
0d8f58ca | 6526 | /* And continue others without a signal. */ |
a493e3e2 | 6527 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
6528 | } |
6529 | else | |
506fb367 DJ |
6530 | { |
6531 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 6532 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 6533 | } |
c906108c | 6534 | |
8d64371b | 6535 | gdb_assert (strlen (rs->buf.data ()) < get_remote_packet_size ()); |
82f73884 | 6536 | putpkt (rs->buf); |
506fb367 | 6537 | |
6efcd9a8 | 6538 | if (target_is_non_stop_p ()) |
74531fed PA |
6539 | { |
6540 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6541 | reply will be reported asynchronously by means of a `%Stop' | |
6542 | notification. */ | |
8d64371b TT |
6543 | getpkt (&rs->buf, 0); |
6544 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6545 | error (_("Unexpected vCont reply in non-stop mode: %s"), | |
6546 | rs->buf.data ()); | |
74531fed PA |
6547 | } |
6548 | ||
506fb367 | 6549 | return 1; |
c906108c | 6550 | } |
43ff13b4 | 6551 | |
506fb367 DJ |
6552 | /* Tell the remote machine to resume. */ |
6553 | ||
f6ac5f3d PA |
6554 | void |
6555 | remote_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal) | |
43ff13b4 | 6556 | { |
d01949b6 | 6557 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6558 | |
85ad3aaf PA |
6559 | /* When connected in non-stop mode, the core resumes threads |
6560 | individually. Resuming remote threads directly in target_resume | |
6561 | would thus result in sending one packet per thread. Instead, to | |
6562 | minimize roundtrip latency, here we just store the resume | |
c9d22089 SM |
6563 | request (put the thread in RESUMED_PENDING_VCONT state); the actual remote |
6564 | resumption will be done in remote_target::commit_resume, where we'll be | |
6565 | able to do vCont action coalescing. */ | |
f6ac5f3d | 6566 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6567 | { |
7aabaf9d | 6568 | remote_thread_info *remote_thr; |
85ad3aaf | 6569 | |
d7e15655 | 6570 | if (minus_one_ptid == ptid || ptid.is_pid ()) |
5b6d1e4f | 6571 | remote_thr = get_remote_thread_info (this, inferior_ptid); |
85ad3aaf | 6572 | else |
5b6d1e4f | 6573 | remote_thr = get_remote_thread_info (this, ptid); |
7aabaf9d | 6574 | |
c9d22089 SM |
6575 | /* We don't expect the core to ask to resume an already resumed (from |
6576 | its point of view) thread. */ | |
a6c11cbb | 6577 | gdb_assert (remote_thr->get_resume_state () == resume_state::NOT_RESUMED); |
c9d22089 SM |
6578 | |
6579 | remote_thr->set_resumed_pending_vcont (step, siggnal); | |
85ad3aaf PA |
6580 | return; |
6581 | } | |
6582 | ||
722247f1 YQ |
6583 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6584 | (explained in remote-notif.c:handle_notification) so | |
6585 | remote_notif_process is not called. We need find a place where | |
6586 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6587 | before resuming inferior, because inferior was stopped and no RSP | |
6588 | traffic at that moment. */ | |
6efcd9a8 | 6589 | if (!target_is_non_stop_p ()) |
5965e028 | 6590 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6591 | |
f6ac5f3d | 6592 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6593 | |
7b68ffbb PA |
6594 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
6595 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
6b8edb51 | 6596 | remote_resume_with_hc (ptid, step, siggnal); |
43ff13b4 | 6597 | |
c9d22089 SM |
6598 | /* Update resumed state tracked by the remote target. */ |
6599 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
6600 | get_remote_thread_info (tp)->set_resumed (); | |
6601 | ||
2acceee2 | 6602 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
6603 | with the event loop. NOTE: this is the one place where all the |
6604 | execution commands end up. We could alternatively do this in each | |
23860348 | 6605 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
6606 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
6607 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 6608 | NOT asynchronously. */ |
362646f5 | 6609 | if (target_can_async_p ()) |
6a3753b3 | 6610 | target_async (1); |
e24a49d8 PA |
6611 | |
6612 | /* We've just told the target to resume. The remote server will | |
6613 | wait for the inferior to stop, and then send a stop reply. In | |
6614 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6615 | because the stub wouldn't be ready to process it. This applies |
6616 | only to the base all-stop protocol, however. In non-stop (which | |
6617 | only supports vCont), the stub replies with an "OK", and is | |
6618 | immediate able to process further serial input. */ | |
6efcd9a8 | 6619 | if (!target_is_non_stop_p ()) |
74531fed | 6620 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6621 | } |
85ad3aaf | 6622 | |
85ad3aaf PA |
6623 | /* Private per-inferior info for target remote processes. */ |
6624 | ||
089354bb | 6625 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6626 | { |
6627 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6628 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6629 | }; |
6630 | ||
089354bb SM |
6631 | /* Get the remote private inferior data associated to INF. */ |
6632 | ||
6633 | static remote_inferior * | |
6634 | get_remote_inferior (inferior *inf) | |
6635 | { | |
6636 | if (inf->priv == NULL) | |
6637 | inf->priv.reset (new remote_inferior); | |
6638 | ||
6639 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6640 | } | |
6641 | ||
f5db4863 | 6642 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6643 | outgoing packet buffer. This is used to send multiple vCont |
6644 | packets if we have more actions than would fit a single packet. */ | |
6645 | ||
f5db4863 | 6646 | class vcont_builder |
85ad3aaf | 6647 | { |
f5db4863 | 6648 | public: |
6b8edb51 PA |
6649 | explicit vcont_builder (remote_target *remote) |
6650 | : m_remote (remote) | |
f5db4863 PA |
6651 | { |
6652 | restart (); | |
6653 | } | |
6654 | ||
6655 | void flush (); | |
6656 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6657 | ||
6658 | private: | |
6659 | void restart (); | |
6660 | ||
6b8edb51 PA |
6661 | /* The remote target. */ |
6662 | remote_target *m_remote; | |
6663 | ||
85ad3aaf PA |
6664 | /* Pointer to the first action. P points here if no action has been |
6665 | appended yet. */ | |
f5db4863 | 6666 | char *m_first_action; |
85ad3aaf PA |
6667 | |
6668 | /* Where the next action will be appended. */ | |
f5db4863 | 6669 | char *m_p; |
85ad3aaf PA |
6670 | |
6671 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6672 | char *m_endp; |
85ad3aaf PA |
6673 | }; |
6674 | ||
6675 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6676 | ||
f5db4863 PA |
6677 | void |
6678 | vcont_builder::restart () | |
85ad3aaf | 6679 | { |
6b8edb51 | 6680 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6681 | |
8d64371b TT |
6682 | m_p = rs->buf.data (); |
6683 | m_endp = m_p + m_remote->get_remote_packet_size (); | |
f5db4863 PA |
6684 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6685 | m_first_action = m_p; | |
85ad3aaf PA |
6686 | } |
6687 | ||
6688 | /* If the vCont packet being built has any action, send it to the | |
6689 | remote end. */ | |
6690 | ||
f5db4863 PA |
6691 | void |
6692 | vcont_builder::flush () | |
85ad3aaf PA |
6693 | { |
6694 | struct remote_state *rs; | |
6695 | ||
f5db4863 | 6696 | if (m_p == m_first_action) |
85ad3aaf PA |
6697 | return; |
6698 | ||
6b8edb51 PA |
6699 | rs = m_remote->get_remote_state (); |
6700 | m_remote->putpkt (rs->buf); | |
8d64371b TT |
6701 | m_remote->getpkt (&rs->buf, 0); |
6702 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6703 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf.data ()); | |
85ad3aaf PA |
6704 | } |
6705 | ||
6706 | /* The largest action is range-stepping, with its two addresses. This | |
6707 | is more than sufficient. If a new, bigger action is created, it'll | |
6708 | quickly trigger a failed assertion in append_resumption (and we'll | |
6709 | just bump this). */ | |
6710 | #define MAX_ACTION_SIZE 200 | |
6711 | ||
6712 | /* Append a new vCont action in the outgoing packet being built. If | |
6713 | the action doesn't fit the packet along with previous actions, push | |
6714 | what we've got so far to the remote end and start over a new vCont | |
6715 | packet (with the new action). */ | |
6716 | ||
f5db4863 PA |
6717 | void |
6718 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6719 | { |
6720 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6721 | |
6b8edb51 PA |
6722 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6723 | ptid, step, siggnal); | |
85ad3aaf PA |
6724 | |
6725 | /* Check whether this new action would fit in the vCont packet along | |
6726 | with previous actions. If not, send what we've got so far and | |
6727 | start a new vCont packet. */ | |
f5db4863 PA |
6728 | size_t rsize = endp - buf; |
6729 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6730 | { |
f5db4863 PA |
6731 | flush (); |
6732 | restart (); | |
85ad3aaf PA |
6733 | |
6734 | /* Should now fit. */ | |
f5db4863 | 6735 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6736 | } |
6737 | ||
f5db4863 PA |
6738 | memcpy (m_p, buf, rsize); |
6739 | m_p += rsize; | |
6740 | *m_p = '\0'; | |
85ad3aaf PA |
6741 | } |
6742 | ||
6743 | /* to_commit_resume implementation. */ | |
6744 | ||
f6ac5f3d | 6745 | void |
1192f124 | 6746 | remote_target::commit_resumed () |
85ad3aaf | 6747 | { |
85ad3aaf PA |
6748 | /* If connected in all-stop mode, we'd send the remote resume |
6749 | request directly from remote_resume. Likewise if | |
6750 | reverse-debugging, as there are no defined vCont actions for | |
6751 | reverse execution. */ | |
f6ac5f3d | 6752 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6753 | return; |
6754 | ||
6755 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6756 | instead of resuming all threads of each process individually. | |
6757 | However, if any thread of a process must remain halted, we can't | |
6758 | send wildcard resumes and must send one action per thread. | |
6759 | ||
6760 | Care must be taken to not resume threads/processes the server | |
6761 | side already told us are stopped, but the core doesn't know about | |
6762 | yet, because the events are still in the vStopped notification | |
6763 | queue. For example: | |
6764 | ||
6765 | #1 => vCont s:p1.1;c | |
6766 | #2 <= OK | |
6767 | #3 <= %Stopped T05 p1.1 | |
6768 | #4 => vStopped | |
6769 | #5 <= T05 p1.2 | |
6770 | #6 => vStopped | |
6771 | #7 <= OK | |
6772 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6773 | #9 => vCont s:p1.1;c | |
6774 | ||
6775 | The last vCont above would resume thread p1.2 by mistake, because | |
6776 | the server has no idea that the event for p1.2 had not been | |
6777 | handled yet. | |
6778 | ||
6779 | The server side must similarly ignore resume actions for the | |
6780 | thread that has a pending %Stopped notification (and any other | |
6781 | threads with events pending), until GDB acks the notification | |
6782 | with vStopped. Otherwise, e.g., the following case is | |
6783 | mishandled: | |
6784 | ||
6785 | #1 => g (or any other packet) | |
6786 | #2 <= [registers] | |
6787 | #3 <= %Stopped T05 p1.2 | |
6788 | #4 => vCont s:p1.1;c | |
6789 | #5 <= OK | |
6790 | ||
6791 | Above, the server must not resume thread p1.2. GDB can't know | |
6792 | that p1.2 stopped until it acks the %Stopped notification, and | |
6793 | since from GDB's perspective all threads should be running, it | |
6794 | sends a "c" action. | |
6795 | ||
6796 | Finally, special care must also be given to handling fork/vfork | |
6797 | events. A (v)fork event actually tells us that two processes | |
6798 | stopped -- the parent and the child. Until we follow the fork, | |
6799 | we must not resume the child. Therefore, if we have a pending | |
6800 | fork follow, we must not send a global wildcard resume action | |
6801 | (vCont;c). We can still send process-wide wildcards though. */ | |
6802 | ||
6803 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
2f63ec5c | 6804 | bool may_global_wildcard_vcont = true; |
85ad3aaf PA |
6805 | |
6806 | /* And assume every process is individually wildcard-able too. */ | |
5b6d1e4f | 6807 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6808 | { |
089354bb SM |
6809 | remote_inferior *priv = get_remote_inferior (inf); |
6810 | ||
6811 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6812 | } |
6813 | ||
6814 | /* Check for any pending events (not reported or processed yet) and | |
6815 | disable process and global wildcard resumes appropriately. */ | |
6816 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6817 | ||
1192f124 SM |
6818 | bool any_pending_vcont_resume = false; |
6819 | ||
5b6d1e4f | 6820 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6821 | { |
c9d22089 SM |
6822 | remote_thread_info *priv = get_remote_thread_info (tp); |
6823 | ||
85ad3aaf PA |
6824 | /* If a thread of a process is not meant to be resumed, then we |
6825 | can't wildcard that process. */ | |
a6c11cbb | 6826 | if (priv->get_resume_state () == resume_state::NOT_RESUMED) |
85ad3aaf | 6827 | { |
089354bb | 6828 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6829 | |
6830 | /* And if we can't wildcard a process, we can't wildcard | |
6831 | everything either. */ | |
2f63ec5c | 6832 | may_global_wildcard_vcont = false; |
85ad3aaf PA |
6833 | continue; |
6834 | } | |
6835 | ||
1192f124 SM |
6836 | if (priv->get_resume_state () == resume_state::RESUMED_PENDING_VCONT) |
6837 | any_pending_vcont_resume = true; | |
6838 | ||
85ad3aaf PA |
6839 | /* If a thread is the parent of an unfollowed fork, then we |
6840 | can't do a global wildcard, as that would resume the fork | |
6841 | child. */ | |
28561a65 | 6842 | if (thread_pending_fork_status (tp) != nullptr) |
2f63ec5c | 6843 | may_global_wildcard_vcont = false; |
85ad3aaf PA |
6844 | } |
6845 | ||
1192f124 SM |
6846 | /* We didn't have any resumed thread pending a vCont resume, so nothing to |
6847 | do. */ | |
6848 | if (!any_pending_vcont_resume) | |
6849 | return; | |
6850 | ||
85ad3aaf PA |
6851 | /* Now let's build the vCont packet(s). Actions must be appended |
6852 | from narrower to wider scopes (thread -> process -> global). If | |
6853 | we end up with too many actions for a single packet vcont_builder | |
6854 | flushes the current vCont packet to the remote side and starts a | |
6855 | new one. */ | |
6b8edb51 | 6856 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
6857 | |
6858 | /* Threads first. */ | |
5b6d1e4f | 6859 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6860 | { |
7aabaf9d | 6861 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf | 6862 | |
c9d22089 SM |
6863 | /* If the thread was previously vCont-resumed, no need to send a specific |
6864 | action for it. If we didn't receive a resume request for it, don't | |
6865 | send an action for it either. */ | |
a6c11cbb | 6866 | if (remote_thr->get_resume_state () != resume_state::RESUMED_PENDING_VCONT) |
85ad3aaf PA |
6867 | continue; |
6868 | ||
6869 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6870 | ||
1192f124 SM |
6871 | /* We should never be commit-resuming a thread that has a stop reply. |
6872 | Otherwise, we would end up reporting a stop event for a thread while | |
6873 | it is running on the remote target. */ | |
6874 | remote_state *rs = get_remote_state (); | |
6875 | for (const auto &stop_reply : rs->stop_reply_queue) | |
6876 | gdb_assert (stop_reply->ptid != tp->ptid); | |
6877 | ||
c9d22089 SM |
6878 | const resumed_pending_vcont_info &info |
6879 | = remote_thr->resumed_pending_vcont_info (); | |
85ad3aaf | 6880 | |
c9d22089 SM |
6881 | /* Check if we need to send a specific action for this thread. If not, |
6882 | it will be included in a wildcard resume instead. */ | |
6883 | if (info.step || info.sig != GDB_SIGNAL_0 | |
6884 | || !get_remote_inferior (tp->inf)->may_wildcard_vcont) | |
6885 | vcont_builder.push_action (tp->ptid, info.step, info.sig); | |
6886 | ||
6887 | remote_thr->set_resumed (); | |
85ad3aaf PA |
6888 | } |
6889 | ||
6890 | /* Now check whether we can send any process-wide wildcard. This is | |
6891 | to avoid sending a global wildcard in the case nothing is | |
6892 | supposed to be resumed. */ | |
2f63ec5c | 6893 | bool any_process_wildcard = false; |
85ad3aaf | 6894 | |
5b6d1e4f | 6895 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6896 | { |
089354bb | 6897 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6898 | { |
2f63ec5c | 6899 | any_process_wildcard = true; |
85ad3aaf PA |
6900 | break; |
6901 | } | |
6902 | } | |
6903 | ||
6904 | if (any_process_wildcard) | |
6905 | { | |
6906 | /* If all processes are wildcard-able, then send a single "c" | |
6907 | action, otherwise, send an "all (-1) threads of process" | |
6908 | continue action for each running process, if any. */ | |
6909 | if (may_global_wildcard_vcont) | |
6910 | { | |
f5db4863 PA |
6911 | vcont_builder.push_action (minus_one_ptid, |
6912 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6913 | } |
6914 | else | |
6915 | { | |
5b6d1e4f | 6916 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6917 | { |
089354bb | 6918 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6919 | { |
f2907e49 | 6920 | vcont_builder.push_action (ptid_t (inf->pid), |
f5db4863 | 6921 | false, GDB_SIGNAL_0); |
85ad3aaf PA |
6922 | } |
6923 | } | |
6924 | } | |
6925 | } | |
6926 | ||
f5db4863 | 6927 | vcont_builder.flush (); |
85ad3aaf PA |
6928 | } |
6929 | ||
b4b1a226 SM |
6930 | /* Implementation of target_has_pending_events. */ |
6931 | ||
6932 | bool | |
6933 | remote_target::has_pending_events () | |
6934 | { | |
6935 | if (target_can_async_p ()) | |
6936 | { | |
6937 | remote_state *rs = get_remote_state (); | |
6938 | ||
6939 | if (async_event_handler_marked (rs->remote_async_inferior_event_token)) | |
6940 | return true; | |
6941 | ||
6942 | /* Note that BUFCNT can be negative, indicating sticky | |
6943 | error. */ | |
6944 | if (rs->remote_desc->bufcnt != 0) | |
6945 | return true; | |
6946 | } | |
6947 | return false; | |
6948 | } | |
6949 | ||
c906108c | 6950 | \f |
43ff13b4 | 6951 | |
74531fed PA |
6952 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6953 | thread, all threads of a remote process, or all threads of all | |
6954 | processes. */ | |
6955 | ||
6b8edb51 PA |
6956 | void |
6957 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
6958 | { |
6959 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6960 | char *p = rs->buf.data (); |
6961 | char *endp = p + get_remote_packet_size (); | |
74531fed | 6962 | |
1192f124 SM |
6963 | /* If any thread that needs to stop was resumed but pending a vCont |
6964 | resume, generate a phony stop_reply. However, first check | |
6965 | whether the thread wasn't resumed with a signal. Generating a | |
6966 | phony stop in that case would result in losing the signal. */ | |
6967 | bool needs_commit = false; | |
6968 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
6969 | { | |
6970 | remote_thread_info *remote_thr = get_remote_thread_info (tp); | |
6971 | ||
6972 | if (remote_thr->get_resume_state () | |
6973 | == resume_state::RESUMED_PENDING_VCONT) | |
6974 | { | |
6975 | const resumed_pending_vcont_info &info | |
6976 | = remote_thr->resumed_pending_vcont_info (); | |
6977 | if (info.sig != GDB_SIGNAL_0) | |
6978 | { | |
6979 | /* This signal must be forwarded to the inferior. We | |
6980 | could commit-resume just this thread, but its simpler | |
6981 | to just commit-resume everything. */ | |
6982 | needs_commit = true; | |
6983 | break; | |
6984 | } | |
6985 | } | |
6986 | } | |
6987 | ||
6988 | if (needs_commit) | |
6989 | commit_resumed (); | |
6990 | else | |
6991 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
6992 | { | |
6993 | remote_thread_info *remote_thr = get_remote_thread_info (tp); | |
6994 | ||
6995 | if (remote_thr->get_resume_state () | |
6996 | == resume_state::RESUMED_PENDING_VCONT) | |
6997 | { | |
6998 | remote_debug_printf ("Enqueueing phony stop reply for thread pending " | |
96bbe3ef TT |
6999 | "vCont-resume (%d, %ld, %s)", tp->ptid.pid(), |
7000 | tp->ptid.lwp (), | |
7001 | pulongest (tp->ptid.tid ())); | |
1192f124 SM |
7002 | |
7003 | /* Check that the thread wasn't resumed with a signal. | |
7004 | Generating a phony stop would result in losing the | |
7005 | signal. */ | |
7006 | const resumed_pending_vcont_info &info | |
7007 | = remote_thr->resumed_pending_vcont_info (); | |
7008 | gdb_assert (info.sig == GDB_SIGNAL_0); | |
7009 | ||
7010 | stop_reply *sr = new stop_reply (); | |
7011 | sr->ptid = tp->ptid; | |
7012 | sr->rs = rs; | |
183be222 | 7013 | sr->ws.set_stopped (GDB_SIGNAL_0); |
1192f124 SM |
7014 | sr->arch = tp->inf->gdbarch; |
7015 | sr->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
7016 | sr->watch_data_address = 0; | |
7017 | sr->core = 0; | |
7018 | this->push_stop_reply (sr); | |
7019 | ||
7020 | /* Pretend that this thread was actually resumed on the | |
7021 | remote target, then stopped. If we leave it in the | |
7022 | RESUMED_PENDING_VCONT state and the commit_resumed | |
7023 | method is called while the stop reply is still in the | |
7024 | queue, we'll end up reporting a stop event to the core | |
7025 | for that thread while it is running on the remote | |
7026 | target... that would be bad. */ | |
7027 | remote_thr->set_resumed (); | |
7028 | } | |
7029 | } | |
7030 | ||
5b6d1e4f PA |
7031 | /* FIXME: This supports_vCont_probed check is a workaround until |
7032 | packet_support is per-connection. */ | |
7033 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN | |
7034 | || !rs->supports_vCont_probed) | |
6b8edb51 | 7035 | remote_vcont_probe (); |
74531fed | 7036 | |
d458bd84 | 7037 | if (!rs->supports_vCont.t) |
74531fed PA |
7038 | error (_("Remote server does not support stopping threads")); |
7039 | ||
d7e15655 | 7040 | if (ptid == minus_one_ptid |
0e998d96 | 7041 | || (!remote_multi_process_p (rs) && ptid.is_pid ())) |
74531fed PA |
7042 | p += xsnprintf (p, endp - p, "vCont;t"); |
7043 | else | |
7044 | { | |
7045 | ptid_t nptid; | |
7046 | ||
74531fed PA |
7047 | p += xsnprintf (p, endp - p, "vCont;t:"); |
7048 | ||
0e998d96 | 7049 | if (ptid.is_pid ()) |
74531fed | 7050 | /* All (-1) threads of process. */ |
184ea2f7 | 7051 | nptid = ptid_t (ptid.pid (), -1); |
74531fed PA |
7052 | else |
7053 | { | |
7054 | /* Small optimization: if we already have a stop reply for | |
7055 | this thread, no use in telling the stub we want this | |
7056 | stopped. */ | |
7057 | if (peek_stop_reply (ptid)) | |
7058 | return; | |
7059 | ||
7060 | nptid = ptid; | |
7061 | } | |
7062 | ||
a9cbf802 | 7063 | write_ptid (p, endp, nptid); |
74531fed PA |
7064 | } |
7065 | ||
7066 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
7067 | come in asynchronously by notification. */ | |
7068 | putpkt (rs->buf); | |
8d64371b TT |
7069 | getpkt (&rs->buf, 0); |
7070 | if (strcmp (rs->buf.data (), "OK") != 0) | |
a068643d | 7071 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid).c_str (), |
8d64371b | 7072 | rs->buf.data ()); |
74531fed PA |
7073 | } |
7074 | ||
bfedc46a PA |
7075 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
7076 | interrupt the remote target. It is undefined which thread of which | |
7077 | process reports the interrupt. */ | |
74531fed | 7078 | |
6b8edb51 PA |
7079 | void |
7080 | remote_target::remote_interrupt_as () | |
74531fed PA |
7081 | { |
7082 | struct remote_state *rs = get_remote_state (); | |
7083 | ||
3a29589a DJ |
7084 | rs->ctrlc_pending_p = 1; |
7085 | ||
74531fed PA |
7086 | /* If the inferior is stopped already, but the core didn't know |
7087 | about it yet, just ignore the request. The cached wait status | |
7088 | will be collected in remote_wait. */ | |
7089 | if (rs->cached_wait_status) | |
7090 | return; | |
7091 | ||
9a7071a8 JB |
7092 | /* Send interrupt_sequence to remote target. */ |
7093 | send_interrupt_sequence (); | |
74531fed PA |
7094 | } |
7095 | ||
de979965 PA |
7096 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
7097 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
7098 | reports the interrupt. Throws an error if the packet is not |
7099 | supported by the server. */ | |
de979965 | 7100 | |
6b8edb51 PA |
7101 | void |
7102 | remote_target::remote_interrupt_ns () | |
de979965 PA |
7103 | { |
7104 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
7105 | char *p = rs->buf.data (); |
7106 | char *endp = p + get_remote_packet_size (); | |
de979965 PA |
7107 | |
7108 | xsnprintf (p, endp - p, "vCtrlC"); | |
7109 | ||
7110 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
7111 | come in asynchronously by notification. */ | |
7112 | putpkt (rs->buf); | |
8d64371b | 7113 | getpkt (&rs->buf, 0); |
de979965 PA |
7114 | |
7115 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
7116 | { | |
7117 | case PACKET_OK: | |
7118 | break; | |
7119 | case PACKET_UNKNOWN: | |
e42de8c7 | 7120 | error (_("No support for interrupting the remote target.")); |
de979965 | 7121 | case PACKET_ERROR: |
8d64371b | 7122 | error (_("Interrupting target failed: %s"), rs->buf.data ()); |
de979965 | 7123 | } |
de979965 PA |
7124 | } |
7125 | ||
bfedc46a | 7126 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 7127 | |
f6ac5f3d PA |
7128 | void |
7129 | remote_target::stop (ptid_t ptid) | |
c906108c | 7130 | { |
2189c312 | 7131 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
c906108c | 7132 | |
6efcd9a8 | 7133 | if (target_is_non_stop_p ()) |
74531fed | 7134 | remote_stop_ns (ptid); |
c906108c | 7135 | else |
bfedc46a PA |
7136 | { |
7137 | /* We don't currently have a way to transparently pause the | |
7138 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 7139 | remote_interrupt_as (); |
bfedc46a PA |
7140 | } |
7141 | } | |
7142 | ||
7143 | /* Implement the to_interrupt function for the remote targets. */ | |
7144 | ||
f6ac5f3d PA |
7145 | void |
7146 | remote_target::interrupt () | |
bfedc46a | 7147 | { |
2189c312 | 7148 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
bfedc46a | 7149 | |
e42de8c7 PA |
7150 | if (target_is_non_stop_p ()) |
7151 | remote_interrupt_ns (); | |
bfedc46a | 7152 | else |
e42de8c7 | 7153 | remote_interrupt_as (); |
c906108c SS |
7154 | } |
7155 | ||
93692b58 PA |
7156 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
7157 | ||
f6ac5f3d PA |
7158 | void |
7159 | remote_target::pass_ctrlc () | |
93692b58 | 7160 | { |
2189c312 | 7161 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
93692b58 | 7162 | |
2189c312 | 7163 | struct remote_state *rs = get_remote_state (); |
93692b58 PA |
7164 | |
7165 | /* If we're starting up, we're not fully synced yet. Quit | |
7166 | immediately. */ | |
7167 | if (rs->starting_up) | |
7168 | quit (); | |
7169 | /* If ^C has already been sent once, offer to disconnect. */ | |
7170 | else if (rs->ctrlc_pending_p) | |
7171 | interrupt_query (); | |
7172 | else | |
e671cd59 | 7173 | target_interrupt (); |
93692b58 PA |
7174 | } |
7175 | ||
c906108c SS |
7176 | /* Ask the user what to do when an interrupt is received. */ |
7177 | ||
6b8edb51 PA |
7178 | void |
7179 | remote_target::interrupt_query () | |
c906108c | 7180 | { |
abc56d60 | 7181 | struct remote_state *rs = get_remote_state (); |
c906108c | 7182 | |
abc56d60 | 7183 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 7184 | { |
abc56d60 PA |
7185 | if (query (_("The target is not responding to interrupt requests.\n" |
7186 | "Stop debugging it? "))) | |
74531fed | 7187 | { |
5b6d1e4f | 7188 | remote_unpush_target (this); |
abc56d60 | 7189 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
7190 | } |
7191 | } | |
abc56d60 PA |
7192 | else |
7193 | { | |
7194 | if (query (_("Interrupted while waiting for the program.\n" | |
7195 | "Give up waiting? "))) | |
7196 | quit (); | |
7197 | } | |
c906108c SS |
7198 | } |
7199 | ||
6426a772 JM |
7200 | /* Enable/disable target terminal ownership. Most targets can use |
7201 | terminal groups to control terminal ownership. Remote targets are | |
7202 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 7203 | is required. */ |
6426a772 | 7204 | |
f6ac5f3d PA |
7205 | void |
7206 | remote_target::terminal_inferior () | |
6426a772 | 7207 | { |
6426a772 JM |
7208 | /* NOTE: At this point we could also register our selves as the |
7209 | recipient of all input. Any characters typed could then be | |
23860348 | 7210 | passed on down to the target. */ |
6426a772 JM |
7211 | } |
7212 | ||
f6ac5f3d PA |
7213 | void |
7214 | remote_target::terminal_ours () | |
6426a772 | 7215 | { |
6426a772 JM |
7216 | } |
7217 | ||
176a6961 | 7218 | static void |
05be00a8 | 7219 | remote_console_output (const char *msg) |
c906108c | 7220 | { |
05be00a8 | 7221 | const char *p; |
c906108c | 7222 | |
c5aa993b | 7223 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
7224 | { |
7225 | char tb[2]; | |
7226 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 7227 | |
c906108c SS |
7228 | tb[0] = c; |
7229 | tb[1] = 0; | |
da5bd37e | 7230 | gdb_stdtarg->puts (tb); |
c906108c | 7231 | } |
da5bd37e | 7232 | gdb_stdtarg->flush (); |
00db5b94 | 7233 | } |
74531fed | 7234 | |
221e1a37 PA |
7235 | /* Return the length of the stop reply queue. */ |
7236 | ||
6b8edb51 PA |
7237 | int |
7238 | remote_target::stop_reply_queue_length () | |
221e1a37 | 7239 | { |
6b8edb51 | 7240 | remote_state *rs = get_remote_state (); |
953edf2b | 7241 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
7242 | } |
7243 | ||
cb8c24b6 | 7244 | static void |
6b8edb51 | 7245 | remote_notif_stop_parse (remote_target *remote, |
bb277751 | 7246 | struct notif_client *self, const char *buf, |
722247f1 YQ |
7247 | struct notif_event *event) |
7248 | { | |
6b8edb51 | 7249 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
7250 | } |
7251 | ||
7252 | static void | |
6b8edb51 | 7253 | remote_notif_stop_ack (remote_target *remote, |
bb277751 | 7254 | struct notif_client *self, const char *buf, |
722247f1 YQ |
7255 | struct notif_event *event) |
7256 | { | |
7257 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
7258 | ||
7259 | /* acknowledge */ | |
6b8edb51 | 7260 | putpkt (remote, self->ack_command); |
722247f1 | 7261 | |
b0083dd7 PA |
7262 | /* Kind can be TARGET_WAITKIND_IGNORE if we have meanwhile discarded |
7263 | the notification. It was left in the queue because we need to | |
7264 | acknowledge it and pull the rest of the notifications out. */ | |
183be222 | 7265 | if (stop_reply->ws.kind () != TARGET_WAITKIND_IGNORE) |
b0083dd7 | 7266 | remote->push_stop_reply (stop_reply); |
722247f1 YQ |
7267 | } |
7268 | ||
7269 | static int | |
6b8edb51 PA |
7270 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
7271 | struct notif_client *self) | |
722247f1 YQ |
7272 | { |
7273 | /* We can't get pending events in remote_notif_process for | |
7274 | notification stop, and we have to do this in remote_wait_ns | |
7275 | instead. If we fetch all queued events from stub, remote stub | |
7276 | may exit and we have no chance to process them back in | |
7277 | remote_wait_ns. */ | |
6b8edb51 PA |
7278 | remote_state *rs = remote->get_remote_state (); |
7279 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
722247f1 YQ |
7280 | return 0; |
7281 | } | |
7282 | ||
32603266 | 7283 | stop_reply::~stop_reply () |
722247f1 | 7284 | { |
32603266 TT |
7285 | for (cached_reg_t ® : regcache) |
7286 | xfree (reg.data); | |
722247f1 YQ |
7287 | } |
7288 | ||
32603266 TT |
7289 | static notif_event_up |
7290 | remote_notif_stop_alloc_reply () | |
722247f1 | 7291 | { |
32603266 | 7292 | return notif_event_up (new struct stop_reply ()); |
722247f1 YQ |
7293 | } |
7294 | ||
7295 | /* A client of notification Stop. */ | |
7296 | ||
7297 | struct notif_client notif_client_stop = | |
7298 | { | |
7299 | "Stop", | |
7300 | "vStopped", | |
7301 | remote_notif_stop_parse, | |
7302 | remote_notif_stop_ack, | |
7303 | remote_notif_stop_can_get_pending_events, | |
7304 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 7305 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
7306 | }; |
7307 | ||
cbb8991c DB |
7308 | /* If CONTEXT contains any fork child threads that have not been |
7309 | reported yet, remove them from the CONTEXT list. If such a | |
7310 | thread exists it is because we are stopped at a fork catchpoint | |
7311 | and have not yet called follow_fork, which will set up the | |
7312 | host-side data structures for the new process. */ | |
7313 | ||
6b8edb51 PA |
7314 | void |
7315 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c | 7316 | { |
cbb8991c | 7317 | struct notif_client *notif = ¬if_client_stop; |
cbb8991c DB |
7318 | |
7319 | /* For any threads stopped at a fork event, remove the corresponding | |
7320 | fork child threads from the CONTEXT list. */ | |
5b6d1e4f | 7321 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c | 7322 | { |
28561a65 SM |
7323 | const target_waitstatus *ws = thread_pending_fork_status (thread); |
7324 | ||
7325 | if (ws == nullptr) | |
7326 | continue; | |
cbb8991c | 7327 | |
28561a65 | 7328 | context->remove_thread (ws->child_ptid ()); |
cbb8991c DB |
7329 | } |
7330 | ||
7331 | /* Check for any pending fork events (not reported or processed yet) | |
7332 | in process PID and remove those fork child threads from the | |
7333 | CONTEXT list as well. */ | |
7334 | remote_notif_get_pending_events (notif); | |
953edf2b | 7335 | for (auto &event : get_remote_state ()->stop_reply_queue) |
183be222 SM |
7336 | if (event->ws.kind () == TARGET_WAITKIND_FORKED |
7337 | || event->ws.kind () == TARGET_WAITKIND_VFORKED | |
7338 | || event->ws.kind () == TARGET_WAITKIND_THREAD_EXITED) | |
7339 | context->remove_thread (event->ws.child_ptid ()); | |
85ad3aaf PA |
7340 | } |
7341 | ||
2f63ec5c AB |
7342 | /* Check whether any event pending in the vStopped queue would prevent a |
7343 | global or process wildcard vCont action. Set *may_global_wildcard to | |
7344 | false if we can't do a global wildcard (vCont;c), and clear the event | |
7345 | inferior's may_wildcard_vcont flag if we can't do a process-wide | |
7346 | wildcard resume (vCont;c:pPID.-1). */ | |
85ad3aaf | 7347 | |
6b8edb51 PA |
7348 | void |
7349 | remote_target::check_pending_events_prevent_wildcard_vcont | |
2f63ec5c | 7350 | (bool *may_global_wildcard) |
85ad3aaf PA |
7351 | { |
7352 | struct notif_client *notif = ¬if_client_stop; | |
7353 | ||
7354 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7355 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7356 | { | |
183be222 SM |
7357 | if (event->ws.kind () == TARGET_WAITKIND_NO_RESUMED |
7358 | || event->ws.kind () == TARGET_WAITKIND_NO_HISTORY) | |
953edf2b | 7359 | continue; |
85ad3aaf | 7360 | |
183be222 SM |
7361 | if (event->ws.kind () == TARGET_WAITKIND_FORKED |
7362 | || event->ws.kind () == TARGET_WAITKIND_VFORKED) | |
2f63ec5c | 7363 | *may_global_wildcard = false; |
722247f1 | 7364 | |
953edf2b TT |
7365 | /* This may be the first time we heard about this process. |
7366 | Regardless, we must not do a global wildcard resume, otherwise | |
7367 | we'd resume this process too. */ | |
2f63ec5c | 7368 | *may_global_wildcard = false; |
323fd5b9 PA |
7369 | if (event->ptid != null_ptid) |
7370 | { | |
7371 | inferior *inf = find_inferior_ptid (this, event->ptid); | |
7372 | if (inf != NULL) | |
7373 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
7374 | } | |
722247f1 | 7375 | } |
722247f1 YQ |
7376 | } |
7377 | ||
f48ff2a7 | 7378 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7379 | |
6b8edb51 PA |
7380 | void |
7381 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7382 | { |
f48ff2a7 YQ |
7383 | struct stop_reply *reply; |
7384 | struct remote_state *rs = get_remote_state (); | |
7385 | struct remote_notif_state *rns = rs->notif_state; | |
7386 | ||
7387 | /* This function can be notified when an inferior exists. When the | |
7388 | target is not remote, the notification state is NULL. */ | |
7389 | if (rs->remote_desc == NULL) | |
7390 | return; | |
7391 | ||
7392 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7393 | |
74531fed | 7394 | /* Discard the in-flight notification. */ |
e99b03dc | 7395 | if (reply != NULL && reply->ptid.pid () == inf->pid) |
74531fed | 7396 | { |
b0083dd7 PA |
7397 | /* Leave the notification pending, since the server expects that |
7398 | we acknowledge it with vStopped. But clear its contents, so | |
7399 | that later on when we acknowledge it, we also discard it. */ | |
df5ad102 SM |
7400 | remote_debug_printf |
7401 | ("discarding in-flight notification: ptid: %s, ws: %s\n", | |
7402 | reply->ptid.to_string().c_str(), | |
7403 | reply->ws.to_string ().c_str ()); | |
183be222 | 7404 | reply->ws.set_ignore (); |
74531fed | 7405 | } |
c906108c | 7406 | |
74531fed PA |
7407 | /* Discard the stop replies we have already pulled with |
7408 | vStopped. */ | |
953edf2b TT |
7409 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7410 | rs->stop_reply_queue.end (), | |
7411 | [=] (const stop_reply_up &event) | |
7412 | { | |
7413 | return event->ptid.pid () == inf->pid; | |
7414 | }); | |
df5ad102 SM |
7415 | for (auto it = iter; it != rs->stop_reply_queue.end (); ++it) |
7416 | remote_debug_printf | |
7417 | ("discarding queued stop reply: ptid: %s, ws: %s\n", | |
7418 | reply->ptid.to_string().c_str(), | |
7419 | reply->ws.to_string ().c_str ()); | |
953edf2b | 7420 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); |
bcc75809 YQ |
7421 | } |
7422 | ||
7423 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7424 | |
6b8edb51 PA |
7425 | void |
7426 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7427 | { |
6b8edb51 | 7428 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7429 | |
f48ff2a7 YQ |
7430 | /* Discard the stop replies we have already pulled with |
7431 | vStopped. */ | |
953edf2b TT |
7432 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7433 | rs->stop_reply_queue.end (), | |
7434 | [=] (const stop_reply_up &event) | |
7435 | { | |
7436 | return event->rs == rs; | |
7437 | }); | |
7438 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7439 | } |
43ff13b4 | 7440 | |
722247f1 YQ |
7441 | /* Remove the first reply in 'stop_reply_queue' which matches |
7442 | PTID. */ | |
2e9f7625 | 7443 | |
6b8edb51 PA |
7444 | struct stop_reply * |
7445 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7446 | { |
953edf2b | 7447 | remote_state *rs = get_remote_state (); |
722247f1 | 7448 | |
953edf2b TT |
7449 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7450 | rs->stop_reply_queue.end (), | |
7451 | [=] (const stop_reply_up &event) | |
7452 | { | |
7453 | return event->ptid.matches (ptid); | |
7454 | }); | |
7455 | struct stop_reply *result; | |
7456 | if (iter == rs->stop_reply_queue.end ()) | |
7457 | result = nullptr; | |
7458 | else | |
7459 | { | |
7460 | result = iter->release (); | |
7461 | rs->stop_reply_queue.erase (iter); | |
7462 | } | |
722247f1 | 7463 | |
722247f1 YQ |
7464 | if (notif_debug) |
7465 | fprintf_unfiltered (gdb_stdlog, | |
7466 | "notif: discard queued event: 'Stop' in %s\n", | |
a068643d | 7467 | target_pid_to_str (ptid).c_str ()); |
a744cf53 | 7468 | |
953edf2b | 7469 | return result; |
74531fed | 7470 | } |
75c99385 | 7471 | |
74531fed PA |
7472 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7473 | remove it from the queue, and return it. Returns NULL if none is | |
7474 | found. If there are still queued events left to process, tell the | |
7475 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7476 | |
6b8edb51 PA |
7477 | struct stop_reply * |
7478 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7479 | { |
953edf2b | 7480 | remote_state *rs = get_remote_state (); |
722247f1 | 7481 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7482 | |
953edf2b | 7483 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7484 | { |
6b8edb51 PA |
7485 | /* There's still at least an event left. */ |
7486 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
7487 | } | |
74531fed | 7488 | |
722247f1 | 7489 | return r; |
74531fed PA |
7490 | } |
7491 | ||
7492 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7493 | know that we now have at least one queued event left to pass to the | |
7494 | core side, tell the event loop to get back to target_wait soon. */ | |
7495 | ||
6b8edb51 PA |
7496 | void |
7497 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7498 | { |
6b8edb51 | 7499 | remote_state *rs = get_remote_state (); |
953edf2b | 7500 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7501 | |
722247f1 YQ |
7502 | if (notif_debug) |
7503 | fprintf_unfiltered (gdb_stdlog, | |
7504 | "notif: push 'Stop' %s to queue %d\n", | |
a068643d | 7505 | target_pid_to_str (new_event->ptid).c_str (), |
953edf2b | 7506 | int (rs->stop_reply_queue.size ())); |
74531fed | 7507 | |
6b8edb51 | 7508 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
74531fed PA |
7509 | } |
7510 | ||
7511 | /* Returns true if we have a stop reply for PTID. */ | |
7512 | ||
6b8edb51 PA |
7513 | int |
7514 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7515 | { |
6b8edb51 | 7516 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7517 | for (auto &event : rs->stop_reply_queue) |
7518 | if (ptid == event->ptid | |
183be222 | 7519 | && event->ws.kind () == TARGET_WAITKIND_STOPPED) |
953edf2b TT |
7520 | return 1; |
7521 | return 0; | |
74531fed PA |
7522 | } |
7523 | ||
26d56a93 SL |
7524 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7525 | starting with P and ending with PEND matches PREFIX. */ | |
7526 | ||
7527 | static int | |
7528 | strprefix (const char *p, const char *pend, const char *prefix) | |
7529 | { | |
7530 | for ( ; p < pend; p++, prefix++) | |
7531 | if (*p != *prefix) | |
7532 | return 0; | |
7533 | return *prefix == '\0'; | |
7534 | } | |
7535 | ||
74531fed PA |
7536 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7537 | result is stored in EVENT, or throws an error. */ | |
7538 | ||
6b8edb51 | 7539 | void |
bb277751 | 7540 | remote_target::remote_parse_stop_reply (const char *buf, stop_reply *event) |
74531fed | 7541 | { |
5cd63fda | 7542 | remote_arch_state *rsa = NULL; |
74531fed | 7543 | ULONGEST addr; |
256642e8 | 7544 | const char *p; |
94585166 | 7545 | int skipregs = 0; |
74531fed PA |
7546 | |
7547 | event->ptid = null_ptid; | |
bcc75809 | 7548 | event->rs = get_remote_state (); |
183be222 | 7549 | event->ws.set_ignore (); |
f7e6eed5 | 7550 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
32603266 | 7551 | event->regcache.clear (); |
dc146f7c | 7552 | event->core = -1; |
74531fed PA |
7553 | |
7554 | switch (buf[0]) | |
7555 | { | |
7556 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7557 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7558 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7559 | ss = signal number | |
7560 | n... = register number | |
7561 | r... = register contents | |
7562 | */ | |
7563 | ||
7564 | p = &buf[3]; /* after Txx */ | |
7565 | while (*p) | |
7566 | { | |
256642e8 | 7567 | const char *p1; |
cea39f65 | 7568 | int fieldsize; |
43ff13b4 | 7569 | |
1f10ba14 PA |
7570 | p1 = strchr (p, ':'); |
7571 | if (p1 == NULL) | |
7572 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7573 | Packet: '%s'\n"), | |
7574 | p, buf); | |
7575 | if (p == p1) | |
7576 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7577 | Packet: '%s'\n"), | |
7578 | p, buf); | |
3c3bea1c | 7579 | |
1f10ba14 PA |
7580 | /* Some "registers" are actually extended stop information. |
7581 | Note if you're adding a new entry here: GDB 7.9 and | |
7582 | earlier assume that all register "numbers" that start | |
7583 | with an hex digit are real register numbers. Make sure | |
7584 | the server only sends such a packet if it knows the | |
7585 | client understands it. */ | |
c8e38a49 | 7586 | |
26d56a93 | 7587 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7588 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7589 | else if (strprefix (p, p1, "syscall_entry")) |
7590 | { | |
7591 | ULONGEST sysno; | |
7592 | ||
82075af2 | 7593 | p = unpack_varlen_hex (++p1, &sysno); |
183be222 | 7594 | event->ws.set_syscall_entry ((int) sysno); |
82075af2 JS |
7595 | } |
7596 | else if (strprefix (p, p1, "syscall_return")) | |
7597 | { | |
7598 | ULONGEST sysno; | |
7599 | ||
82075af2 | 7600 | p = unpack_varlen_hex (++p1, &sysno); |
183be222 | 7601 | event->ws.set_syscall_return ((int) sysno); |
82075af2 | 7602 | } |
26d56a93 SL |
7603 | else if (strprefix (p, p1, "watch") |
7604 | || strprefix (p, p1, "rwatch") | |
7605 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7606 | { |
f7e6eed5 | 7607 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7608 | p = unpack_varlen_hex (++p1, &addr); |
7609 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7610 | } |
26d56a93 | 7611 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7612 | { |
7613 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7614 | ||
7615 | /* Make sure the stub doesn't forget to indicate support | |
7616 | with qSupported. */ | |
7617 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7618 | error (_("Unexpected swbreak stop reason")); | |
7619 | ||
7620 | /* The value part is documented as "must be empty", | |
7621 | though we ignore it, in case we ever decide to make | |
7622 | use of it in a backward compatible way. */ | |
8424cc97 | 7623 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7624 | } |
26d56a93 | 7625 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7626 | { |
7627 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7628 | ||
7629 | /* Make sure the stub doesn't forget to indicate support | |
7630 | with qSupported. */ | |
7631 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7632 | error (_("Unexpected hwbreak stop reason")); | |
7633 | ||
7634 | /* See above. */ | |
8424cc97 | 7635 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7636 | } |
26d56a93 | 7637 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7638 | { |
183be222 | 7639 | event->ws.set_loaded (); |
8424cc97 | 7640 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7641 | } |
26d56a93 | 7642 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 | 7643 | { |
183be222 | 7644 | event->ws.set_no_history (); |
1f10ba14 PA |
7645 | /* p1 will indicate "begin" or "end", but it makes |
7646 | no difference for now, so ignore it. */ | |
8424cc97 | 7647 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7648 | } |
26d56a93 | 7649 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7650 | { |
7651 | ULONGEST c; | |
a744cf53 | 7652 | |
1f10ba14 PA |
7653 | p = unpack_varlen_hex (++p1, &c); |
7654 | event->core = c; | |
cea39f65 | 7655 | } |
26d56a93 | 7656 | else if (strprefix (p, p1, "fork")) |
183be222 | 7657 | event->ws.set_forked (read_ptid (++p1, &p)); |
26d56a93 | 7658 | else if (strprefix (p, p1, "vfork")) |
183be222 | 7659 | event->ws.set_vforked (read_ptid (++p1, &p)); |
26d56a93 | 7660 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb | 7661 | { |
183be222 | 7662 | event->ws.set_vfork_done (); |
8424cc97 | 7663 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7664 | } |
6ab24463 | 7665 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7666 | { |
7667 | ULONGEST ignored; | |
94585166 DB |
7668 | int pathlen; |
7669 | ||
7670 | /* Determine the length of the execd pathname. */ | |
7671 | p = unpack_varlen_hex (++p1, &ignored); | |
7672 | pathlen = (p - p1) / 2; | |
7673 | ||
7674 | /* Save the pathname for event reporting and for | |
7675 | the next run command. */ | |
183be222 | 7676 | gdb::unique_xmalloc_ptr<char> pathname |
c6321f19 TT |
7677 | ((char *) xmalloc (pathlen + 1)); |
7678 | hex2bin (p1, (gdb_byte *) pathname.get (), pathlen); | |
183be222 | 7679 | pathname.get ()[pathlen] = '\0'; |
94585166 DB |
7680 | |
7681 | /* This is freed during event handling. */ | |
183be222 | 7682 | event->ws.set_execd (std::move (pathname)); |
94585166 DB |
7683 | |
7684 | /* Skip the registers included in this packet, since | |
7685 | they may be for an architecture different from the | |
7686 | one used by the original program. */ | |
7687 | skipregs = 1; | |
7688 | } | |
65706a29 PA |
7689 | else if (strprefix (p, p1, "create")) |
7690 | { | |
183be222 | 7691 | event->ws.set_thread_created (); |
8424cc97 | 7692 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7693 | } |
cea39f65 MS |
7694 | else |
7695 | { | |
1f10ba14 | 7696 | ULONGEST pnum; |
256642e8 | 7697 | const char *p_temp; |
1f10ba14 | 7698 | |
94585166 DB |
7699 | if (skipregs) |
7700 | { | |
8424cc97 | 7701 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7702 | p++; |
7703 | continue; | |
7704 | } | |
7705 | ||
1f10ba14 PA |
7706 | /* Maybe a real ``P'' register number. */ |
7707 | p_temp = unpack_varlen_hex (p, &pnum); | |
7708 | /* If the first invalid character is the colon, we got a | |
7709 | register number. Otherwise, it's an unknown stop | |
7710 | reason. */ | |
7711 | if (p_temp == p1) | |
7712 | { | |
5cd63fda PA |
7713 | /* If we haven't parsed the event's thread yet, find |
7714 | it now, in order to find the architecture of the | |
7715 | reported expedited registers. */ | |
7716 | if (event->ptid == null_ptid) | |
7717 | { | |
24ed6739 AB |
7718 | /* If there is no thread-id information then leave |
7719 | the event->ptid as null_ptid. Later in | |
7720 | process_stop_reply we will pick a suitable | |
7721 | thread. */ | |
5cd63fda PA |
7722 | const char *thr = strstr (p1 + 1, ";thread:"); |
7723 | if (thr != NULL) | |
7724 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7725 | NULL); | |
5cd63fda PA |
7726 | } |
7727 | ||
7728 | if (rsa == NULL) | |
7729 | { | |
5b6d1e4f PA |
7730 | inferior *inf |
7731 | = (event->ptid == null_ptid | |
7732 | ? NULL | |
7733 | : find_inferior_ptid (this, event->ptid)); | |
5cd63fda PA |
7734 | /* If this is the first time we learn anything |
7735 | about this process, skip the registers | |
7736 | included in this packet, since we don't yet | |
7737 | know which architecture to use to parse them. | |
7738 | We'll determine the architecture later when | |
7739 | we process the stop reply and retrieve the | |
7740 | target description, via | |
7741 | remote_notice_new_inferior -> | |
7742 | post_create_inferior. */ | |
7743 | if (inf == NULL) | |
7744 | { | |
7745 | p = strchrnul (p1 + 1, ';'); | |
7746 | p++; | |
7747 | continue; | |
7748 | } | |
7749 | ||
7750 | event->arch = inf->gdbarch; | |
9d6eea31 | 7751 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7752 | } |
7753 | ||
7754 | packet_reg *reg | |
7755 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7756 | cached_reg_t cached_reg; |
43ff13b4 | 7757 | |
1f10ba14 PA |
7758 | if (reg == NULL) |
7759 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7760 | Packet: '%s'\n"), |
1f10ba14 | 7761 | hex_string (pnum), p, buf); |
c8e38a49 | 7762 | |
1f10ba14 | 7763 | cached_reg.num = reg->regnum; |
d1dff226 | 7764 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7765 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7766 | |
1f10ba14 PA |
7767 | p = p1 + 1; |
7768 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7769 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7770 | p += 2 * fieldsize; |
5cd63fda | 7771 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7772 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7773 | |
32603266 | 7774 | event->regcache.push_back (cached_reg); |
1f10ba14 PA |
7775 | } |
7776 | else | |
7777 | { | |
7778 | /* Not a number. Silently skip unknown optional | |
7779 | info. */ | |
8424cc97 | 7780 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7781 | } |
cea39f65 | 7782 | } |
c8e38a49 | 7783 | |
cea39f65 MS |
7784 | if (*p != ';') |
7785 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7786 | buf, p); | |
7787 | ++p; | |
7788 | } | |
5b5596ff | 7789 | |
183be222 | 7790 | if (event->ws.kind () != TARGET_WAITKIND_IGNORE) |
5b5596ff PA |
7791 | break; |
7792 | ||
c8e38a49 PA |
7793 | /* fall through */ |
7794 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7795 | { |
7796 | int sig; | |
7797 | ||
3a09da41 PA |
7798 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); |
7799 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
183be222 | 7800 | event->ws.set_stopped ((enum gdb_signal) sig); |
3a09da41 | 7801 | else |
183be222 | 7802 | event->ws.set_stopped (GDB_SIGNAL_UNKNOWN); |
3a09da41 | 7803 | } |
c8e38a49 | 7804 | break; |
65706a29 PA |
7805 | case 'w': /* Thread exited. */ |
7806 | { | |
65706a29 PA |
7807 | ULONGEST value; |
7808 | ||
65706a29 | 7809 | p = unpack_varlen_hex (&buf[1], &value); |
183be222 | 7810 | event->ws.set_thread_exited (value); |
65706a29 PA |
7811 | if (*p != ';') |
7812 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7813 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7814 | break; |
7815 | } | |
c8e38a49 PA |
7816 | case 'W': /* Target exited. */ |
7817 | case 'X': | |
7818 | { | |
c8e38a49 | 7819 | ULONGEST value; |
82f73884 | 7820 | |
c8e38a49 PA |
7821 | /* GDB used to accept only 2 hex chars here. Stubs should |
7822 | only send more if they detect GDB supports multi-process | |
7823 | support. */ | |
7824 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7825 | |
c8e38a49 PA |
7826 | if (buf[0] == 'W') |
7827 | { | |
7828 | /* The remote process exited. */ | |
183be222 | 7829 | event->ws.set_exited (value); |
c8e38a49 PA |
7830 | } |
7831 | else | |
7832 | { | |
7833 | /* The remote process exited with a signal. */ | |
3a09da41 | 7834 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
183be222 | 7835 | event->ws.set_signalled ((enum gdb_signal) value); |
3a09da41 | 7836 | else |
183be222 | 7837 | event->ws.set_signalled (GDB_SIGNAL_UNKNOWN); |
c8e38a49 | 7838 | } |
82f73884 | 7839 | |
e7af6c70 TBA |
7840 | /* If no process is specified, return null_ptid, and let the |
7841 | caller figure out the right process to use. */ | |
7842 | int pid = 0; | |
c8e38a49 PA |
7843 | if (*p == '\0') |
7844 | ; | |
7845 | else if (*p == ';') | |
7846 | { | |
7847 | p++; | |
7848 | ||
0b24eb2d | 7849 | if (*p == '\0') |
82f73884 | 7850 | ; |
61012eef | 7851 | else if (startswith (p, "process:")) |
82f73884 | 7852 | { |
c8e38a49 | 7853 | ULONGEST upid; |
a744cf53 | 7854 | |
c8e38a49 PA |
7855 | p += sizeof ("process:") - 1; |
7856 | unpack_varlen_hex (p, &upid); | |
7857 | pid = upid; | |
82f73884 PA |
7858 | } |
7859 | else | |
7860 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7861 | } |
c8e38a49 PA |
7862 | else |
7863 | error (_("unknown stop reply packet: %s"), buf); | |
f2907e49 | 7864 | event->ptid = ptid_t (pid); |
74531fed PA |
7865 | } |
7866 | break; | |
f2faf941 | 7867 | case 'N': |
183be222 | 7868 | event->ws.set_no_resumed (); |
f2faf941 PA |
7869 | event->ptid = minus_one_ptid; |
7870 | break; | |
74531fed | 7871 | } |
74531fed PA |
7872 | } |
7873 | ||
722247f1 YQ |
7874 | /* When the stub wants to tell GDB about a new notification reply, it |
7875 | sends a notification (%Stop, for example). Those can come it at | |
7876 | any time, hence, we have to make sure that any pending | |
7877 | putpkt/getpkt sequence we're making is finished, before querying | |
7878 | the stub for more events with the corresponding ack command | |
7879 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7880 | immediately upon receiving the notification, something like this | |
7881 | could happen: | |
74531fed PA |
7882 | |
7883 | 1.1) --> Hg 1 | |
7884 | 1.2) <-- OK | |
7885 | 1.3) --> g | |
7886 | 1.4) <-- %Stop | |
7887 | 1.5) --> vStopped | |
7888 | 1.6) <-- (registers reply to step #1.3) | |
7889 | ||
7890 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7891 | query. | |
7892 | ||
796cb314 | 7893 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7894 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7895 | doing whatever we were doing: | |
7896 | ||
7897 | 2.1) --> Hg 1 | |
7898 | 2.2) <-- OK | |
7899 | 2.3) --> g | |
7900 | 2.4) <-- %Stop | |
7901 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7902 | 2.5) <-- (registers reply to step #2.3) | |
7903 | ||
85102364 | 7904 | Eventually after step #2.5, we return to the event loop, which |
74531fed PA |
7905 | notices there's an event on the |
7906 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7907 | associated callback --- the function below. At this point, we're | |
7908 | always safe to start a vStopped sequence. : | |
7909 | ||
7910 | 2.6) --> vStopped | |
7911 | 2.7) <-- T05 thread:2 | |
7912 | 2.8) --> vStopped | |
7913 | 2.9) --> OK | |
7914 | */ | |
7915 | ||
722247f1 | 7916 | void |
6b8edb51 | 7917 | remote_target::remote_notif_get_pending_events (notif_client *nc) |
74531fed PA |
7918 | { |
7919 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7920 | |
f48ff2a7 | 7921 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7922 | { |
722247f1 YQ |
7923 | if (notif_debug) |
7924 | fprintf_unfiltered (gdb_stdlog, | |
7925 | "notif: process: '%s' ack pending event\n", | |
7926 | nc->name); | |
74531fed | 7927 | |
722247f1 | 7928 | /* acknowledge */ |
8d64371b TT |
7929 | nc->ack (this, nc, rs->buf.data (), |
7930 | rs->notif_state->pending_event[nc->id]); | |
f48ff2a7 | 7931 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
7932 | |
7933 | while (1) | |
7934 | { | |
8d64371b TT |
7935 | getpkt (&rs->buf, 0); |
7936 | if (strcmp (rs->buf.data (), "OK") == 0) | |
74531fed PA |
7937 | break; |
7938 | else | |
8d64371b | 7939 | remote_notif_ack (this, nc, rs->buf.data ()); |
74531fed PA |
7940 | } |
7941 | } | |
722247f1 YQ |
7942 | else |
7943 | { | |
7944 | if (notif_debug) | |
7945 | fprintf_unfiltered (gdb_stdlog, | |
7946 | "notif: process: '%s' no pending reply\n", | |
7947 | nc->name); | |
7948 | } | |
74531fed PA |
7949 | } |
7950 | ||
6b8edb51 PA |
7951 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
7952 | avoid having to export the whole remote_target class. */ | |
7953 | ||
7954 | void | |
7955 | remote_notif_get_pending_events (remote_target *remote, notif_client *nc) | |
7956 | { | |
7957 | remote->remote_notif_get_pending_events (nc); | |
7958 | } | |
7959 | ||
8f66807b AB |
7960 | /* Called from process_stop_reply when the stop packet we are responding |
7961 | to didn't include a process-id or thread-id. STATUS is the stop event | |
7962 | we are responding to. | |
7963 | ||
7964 | It is the task of this function to select a suitable thread (or process) | |
7965 | and return its ptid, this is the thread (or process) we will assume the | |
7966 | stop event came from. | |
7967 | ||
7968 | In some cases there isn't really any choice about which thread (or | |
7969 | process) is selected, a basic remote with a single process containing a | |
7970 | single thread might choose not to send any process-id or thread-id in | |
7971 | its stop packets, this function will select and return the one and only | |
7972 | thread. | |
7973 | ||
7974 | However, if a target supports multiple threads (or processes) and still | |
7975 | doesn't include a thread-id (or process-id) in its stop packet then | |
7976 | first, this is a badly behaving target, and second, we're going to have | |
7977 | to select a thread (or process) at random and use that. This function | |
7978 | will print a warning to the user if it detects that there is the | |
7979 | possibility that GDB is guessing which thread (or process) to | |
7980 | report. | |
7981 | ||
7982 | Note that this is called before GDB fetches the updated thread list from the | |
7983 | target. So it's possible for the stop reply to be ambiguous and for GDB to | |
7984 | not realize it. For example, if there's initially one thread, the target | |
7985 | spawns a second thread, and then sends a stop reply without an id that | |
7986 | concerns the first thread. GDB will assume the stop reply is about the | |
7987 | first thread - the only thread it knows about - without printing a warning. | |
7988 | Anyway, if the remote meant for the stop reply to be about the second thread, | |
7989 | then it would be really broken, because GDB doesn't know about that thread | |
7990 | yet. */ | |
74531fed | 7991 | |
6b8edb51 | 7992 | ptid_t |
8f66807b | 7993 | remote_target::select_thread_for_ambiguous_stop_reply |
c272a98c | 7994 | (const target_waitstatus &status) |
74531fed | 7995 | { |
4351271e AB |
7996 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
7997 | ||
8f66807b AB |
7998 | /* Some stop events apply to all threads in an inferior, while others |
7999 | only apply to a single thread. */ | |
8000 | bool process_wide_stop | |
c272a98c SM |
8001 | = (status.kind () == TARGET_WAITKIND_EXITED |
8002 | || status.kind () == TARGET_WAITKIND_SIGNALLED); | |
74531fed | 8003 | |
4351271e AB |
8004 | remote_debug_printf ("process_wide_stop = %d", process_wide_stop); |
8005 | ||
8f66807b AB |
8006 | thread_info *first_resumed_thread = nullptr; |
8007 | bool ambiguous = false; | |
74531fed | 8008 | |
8f66807b AB |
8009 | /* Consider all non-exited threads of the target, find the first resumed |
8010 | one. */ | |
8011 | for (thread_info *thr : all_non_exited_threads (this)) | |
24ed6739 | 8012 | { |
8f66807b | 8013 | remote_thread_info *remote_thr = get_remote_thread_info (thr); |
cada5fc9 | 8014 | |
a6c11cbb | 8015 | if (remote_thr->get_resume_state () != resume_state::RESUMED) |
8f66807b | 8016 | continue; |
24ed6739 | 8017 | |
8f66807b AB |
8018 | if (first_resumed_thread == nullptr) |
8019 | first_resumed_thread = thr; | |
8020 | else if (!process_wide_stop | |
8021 | || first_resumed_thread->ptid.pid () != thr->ptid.pid ()) | |
8022 | ambiguous = true; | |
8023 | } | |
8024 | ||
4351271e AB |
8025 | remote_debug_printf ("first resumed thread is %s", |
8026 | pid_to_str (first_resumed_thread->ptid).c_str ()); | |
8027 | remote_debug_printf ("is this guess ambiguous? = %d", ambiguous); | |
8028 | ||
8f66807b | 8029 | gdb_assert (first_resumed_thread != nullptr); |
cada5fc9 | 8030 | |
8f66807b AB |
8031 | /* Warn if the remote target is sending ambiguous stop replies. */ |
8032 | if (ambiguous) | |
8033 | { | |
8034 | static bool warned = false; | |
8035 | ||
8036 | if (!warned) | |
8037 | { | |
8038 | /* If you are seeing this warning then the remote target has | |
8039 | stopped without specifying a thread-id, but the target | |
8040 | does have multiple threads (or inferiors), and so GDB is | |
8041 | having to guess which thread stopped. | |
8042 | ||
8043 | Examples of what might cause this are the target sending | |
8044 | and 'S' stop packet, or a 'T' stop packet and not | |
8045 | including a thread-id. | |
8046 | ||
8047 | Additionally, the target might send a 'W' or 'X packet | |
8048 | without including a process-id, when the target has | |
8049 | multiple running inferiors. */ | |
8050 | if (process_wide_stop) | |
8051 | warning (_("multi-inferior target stopped without " | |
8052 | "sending a process-id, using first " | |
8053 | "non-exited inferior")); | |
cada5fc9 | 8054 | else |
8f66807b AB |
8055 | warning (_("multi-threaded target stopped without " |
8056 | "sending a thread-id, using first " | |
8057 | "non-exited thread")); | |
8058 | warned = true; | |
24ed6739 | 8059 | } |
24ed6739 | 8060 | } |
74531fed | 8061 | |
8f66807b AB |
8062 | /* If this is a stop for all threads then don't use a particular threads |
8063 | ptid, instead create a new ptid where only the pid field is set. */ | |
8064 | if (process_wide_stop) | |
8065 | return ptid_t (first_resumed_thread->ptid.pid ()); | |
8066 | else | |
8067 | return first_resumed_thread->ptid; | |
8068 | } | |
8069 | ||
8070 | /* Called when it is decided that STOP_REPLY holds the info of the | |
8071 | event that is to be returned to the core. This function always | |
8072 | destroys STOP_REPLY. */ | |
8073 | ||
8074 | ptid_t | |
8075 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
8076 | struct target_waitstatus *status) | |
8077 | { | |
8078 | *status = stop_reply->ws; | |
8079 | ptid_t ptid = stop_reply->ptid; | |
8080 | ||
8081 | /* If no thread/process was reported by the stub then select a suitable | |
8082 | thread/process. */ | |
8083 | if (ptid == null_ptid) | |
c272a98c | 8084 | ptid = select_thread_for_ambiguous_stop_reply (*status); |
8f66807b AB |
8085 | gdb_assert (ptid != null_ptid); |
8086 | ||
183be222 SM |
8087 | if (status->kind () != TARGET_WAITKIND_EXITED |
8088 | && status->kind () != TARGET_WAITKIND_SIGNALLED | |
8089 | && status->kind () != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 8090 | { |
5f3563ea | 8091 | /* Expedited registers. */ |
32603266 | 8092 | if (!stop_reply->regcache.empty ()) |
5f3563ea | 8093 | { |
217f1f79 | 8094 | struct regcache *regcache |
5b6d1e4f | 8095 | = get_thread_arch_regcache (this, ptid, stop_reply->arch); |
5f3563ea | 8096 | |
32603266 TT |
8097 | for (cached_reg_t ® : stop_reply->regcache) |
8098 | { | |
8099 | regcache->raw_supply (reg.num, reg.data); | |
8100 | xfree (reg.data); | |
8101 | } | |
d1dff226 | 8102 | |
32603266 | 8103 | stop_reply->regcache.clear (); |
5f3563ea | 8104 | } |
74531fed | 8105 | |
8a82de58 | 8106 | remote_notice_new_inferior (ptid, false); |
5b6d1e4f | 8107 | remote_thread_info *remote_thr = get_remote_thread_info (this, ptid); |
799a2abe PA |
8108 | remote_thr->core = stop_reply->core; |
8109 | remote_thr->stop_reason = stop_reply->stop_reason; | |
8110 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
c9d22089 SM |
8111 | |
8112 | if (target_is_non_stop_p ()) | |
8113 | { | |
8114 | /* If the target works in non-stop mode, a stop-reply indicates that | |
8115 | only this thread stopped. */ | |
8116 | remote_thr->set_not_resumed (); | |
8117 | } | |
8118 | else | |
8119 | { | |
8120 | /* If the target works in all-stop mode, a stop-reply indicates that | |
8121 | all the target's threads stopped. */ | |
8122 | for (thread_info *tp : all_non_exited_threads (this)) | |
8123 | get_remote_thread_info (tp)->set_not_resumed (); | |
8124 | } | |
74531fed PA |
8125 | } |
8126 | ||
32603266 | 8127 | delete stop_reply; |
74531fed PA |
8128 | return ptid; |
8129 | } | |
8130 | ||
8131 | /* The non-stop mode version of target_wait. */ | |
8132 | ||
6b8edb51 | 8133 | ptid_t |
b60cea74 TT |
8134 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, |
8135 | target_wait_flags options) | |
74531fed PA |
8136 | { |
8137 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
8138 | struct stop_reply *stop_reply; |
8139 | int ret; | |
fee9eda9 | 8140 | int is_notif = 0; |
74531fed PA |
8141 | |
8142 | /* If in non-stop mode, get out of getpkt even if a | |
8143 | notification is received. */ | |
8144 | ||
8d64371b | 8145 | ret = getpkt_or_notif_sane (&rs->buf, 0 /* forever */, &is_notif); |
74531fed PA |
8146 | while (1) |
8147 | { | |
fee9eda9 | 8148 | if (ret != -1 && !is_notif) |
74531fed PA |
8149 | switch (rs->buf[0]) |
8150 | { | |
8151 | case 'E': /* Error of some sort. */ | |
8152 | /* We're out of sync with the target now. Did it continue | |
8153 | or not? We can't tell which thread it was in non-stop, | |
8154 | so just ignore this. */ | |
8d64371b | 8155 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
74531fed PA |
8156 | break; |
8157 | case 'O': /* Console output. */ | |
8d64371b | 8158 | remote_console_output (&rs->buf[1]); |
74531fed PA |
8159 | break; |
8160 | default: | |
8d64371b | 8161 | warning (_("Invalid remote reply: %s"), rs->buf.data ()); |
74531fed PA |
8162 | break; |
8163 | } | |
8164 | ||
8165 | /* Acknowledge a pending stop reply that may have arrived in the | |
8166 | mean time. */ | |
f48ff2a7 | 8167 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 8168 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
8169 | |
8170 | /* If indeed we noticed a stop reply, we're done. */ | |
8171 | stop_reply = queued_stop_reply (ptid); | |
8172 | if (stop_reply != NULL) | |
8173 | return process_stop_reply (stop_reply, status); | |
8174 | ||
47608cb1 | 8175 | /* Still no event. If we're just polling for an event, then |
74531fed | 8176 | return to the event loop. */ |
47608cb1 | 8177 | if (options & TARGET_WNOHANG) |
74531fed | 8178 | { |
183be222 | 8179 | status->set_ignore (); |
74531fed PA |
8180 | return minus_one_ptid; |
8181 | } | |
8182 | ||
47608cb1 | 8183 | /* Otherwise do a blocking wait. */ |
8d64371b | 8184 | ret = getpkt_or_notif_sane (&rs->buf, 1 /* forever */, &is_notif); |
74531fed PA |
8185 | } |
8186 | } | |
8187 | ||
31ba933e PA |
8188 | /* Return the first resumed thread. */ |
8189 | ||
8190 | static ptid_t | |
5b6d1e4f | 8191 | first_remote_resumed_thread (remote_target *target) |
31ba933e | 8192 | { |
5b6d1e4f | 8193 | for (thread_info *tp : all_non_exited_threads (target, minus_one_ptid)) |
7846f3aa | 8194 | if (tp->resumed ()) |
31ba933e PA |
8195 | return tp->ptid; |
8196 | return null_ptid; | |
8197 | } | |
8198 | ||
74531fed PA |
8199 | /* Wait until the remote machine stops, then return, storing status in |
8200 | STATUS just as `wait' would. */ | |
8201 | ||
6b8edb51 | 8202 | ptid_t |
b60cea74 TT |
8203 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, |
8204 | target_wait_flags options) | |
74531fed PA |
8205 | { |
8206 | struct remote_state *rs = get_remote_state (); | |
74531fed | 8207 | ptid_t event_ptid = null_ptid; |
cea39f65 | 8208 | char *buf; |
74531fed PA |
8209 | struct stop_reply *stop_reply; |
8210 | ||
47608cb1 PA |
8211 | again: |
8212 | ||
183be222 | 8213 | status->set_ignore (); |
74531fed PA |
8214 | |
8215 | stop_reply = queued_stop_reply (ptid); | |
8216 | if (stop_reply != NULL) | |
8217 | return process_stop_reply (stop_reply, status); | |
8218 | ||
8219 | if (rs->cached_wait_status) | |
8220 | /* Use the cached wait status, but only once. */ | |
8221 | rs->cached_wait_status = 0; | |
8222 | else | |
8223 | { | |
8224 | int ret; | |
722247f1 | 8225 | int is_notif; |
567420d1 | 8226 | int forever = ((options & TARGET_WNOHANG) == 0 |
6b8edb51 | 8227 | && rs->wait_forever_enabled_p); |
567420d1 PA |
8228 | |
8229 | if (!rs->waiting_for_stop_reply) | |
8230 | { | |
183be222 | 8231 | status->set_no_resumed (); |
567420d1 PA |
8232 | return minus_one_ptid; |
8233 | } | |
74531fed | 8234 | |
74531fed PA |
8235 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
8236 | _never_ wait for ever -> test on target_is_async_p(). | |
8237 | However, before we do that we need to ensure that the caller | |
8238 | knows how to take the target into/out of async mode. */ | |
8d64371b | 8239 | ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif); |
722247f1 YQ |
8240 | |
8241 | /* GDB gets a notification. Return to core as this event is | |
8242 | not interesting. */ | |
8243 | if (ret != -1 && is_notif) | |
8244 | return minus_one_ptid; | |
567420d1 PA |
8245 | |
8246 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
8247 | return minus_one_ptid; | |
74531fed PA |
8248 | } |
8249 | ||
8d64371b | 8250 | buf = rs->buf.data (); |
74531fed | 8251 | |
3a29589a DJ |
8252 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
8253 | an 'F' or 'O' packet. */ | |
8254 | if (buf[0] != 'F' && buf[0] != 'O') | |
8255 | rs->ctrlc_pending_p = 0; | |
8256 | ||
74531fed PA |
8257 | switch (buf[0]) |
8258 | { | |
8259 | case 'E': /* Error of some sort. */ | |
8260 | /* We're out of sync with the target now. Did it continue or | |
8261 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
8262 | rs->waiting_for_stop_reply = 0; |
8263 | ||
74531fed | 8264 | warning (_("Remote failure reply: %s"), buf); |
183be222 | 8265 | status->set_stopped (GDB_SIGNAL_0); |
74531fed PA |
8266 | break; |
8267 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
8268 | /* GDB may access the inferior memory while handling the File-I/O |
8269 | request, but we don't want GDB accessing memory while waiting | |
8270 | for a stop reply. See the comments in putpkt_binary. Set | |
8271 | waiting_for_stop_reply to 0 temporarily. */ | |
8272 | rs->waiting_for_stop_reply = 0; | |
6b8edb51 | 8273 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); |
3a29589a | 8274 | rs->ctrlc_pending_p = 0; |
e42e5352 YQ |
8275 | /* GDB handled the File-I/O request, and the target is running |
8276 | again. Keep waiting for events. */ | |
8277 | rs->waiting_for_stop_reply = 1; | |
74531fed | 8278 | break; |
f2faf941 | 8279 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 8280 | { |
29090fb6 LM |
8281 | /* There is a stop reply to handle. */ |
8282 | rs->waiting_for_stop_reply = 0; | |
8283 | ||
8284 | stop_reply | |
6b8edb51 PA |
8285 | = (struct stop_reply *) remote_notif_parse (this, |
8286 | ¬if_client_stop, | |
8d64371b | 8287 | rs->buf.data ()); |
74531fed | 8288 | |
74531fed | 8289 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
8290 | break; |
8291 | } | |
8292 | case 'O': /* Console output. */ | |
8293 | remote_console_output (buf + 1); | |
c8e38a49 PA |
8294 | break; |
8295 | case '\0': | |
b73be471 | 8296 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
8297 | { |
8298 | /* Zero length reply means that we tried 'S' or 'C' and the | |
8299 | remote system doesn't support it. */ | |
223ffa71 | 8300 | target_terminal::ours_for_output (); |
c8e38a49 PA |
8301 | printf_filtered |
8302 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
8303 | gdb_signal_to_name (rs->last_sent_signal)); |
8304 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 8305 | target_terminal::inferior (); |
c8e38a49 | 8306 | |
f5c4fcd9 TT |
8307 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
8308 | putpkt (buf); | |
c8e38a49 | 8309 | break; |
43ff13b4 | 8310 | } |
86a73007 | 8311 | /* fallthrough */ |
c8e38a49 PA |
8312 | default: |
8313 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 8314 | break; |
43ff13b4 | 8315 | } |
c8e38a49 | 8316 | |
183be222 | 8317 | if (status->kind () == TARGET_WAITKIND_NO_RESUMED) |
f2faf941 | 8318 | return minus_one_ptid; |
183be222 | 8319 | else if (status->kind () == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
8320 | { |
8321 | /* Nothing interesting happened. If we're doing a non-blocking | |
8322 | poll, we're done. Otherwise, go back to waiting. */ | |
8323 | if (options & TARGET_WNOHANG) | |
8324 | return minus_one_ptid; | |
8325 | else | |
8326 | goto again; | |
8327 | } | |
183be222 SM |
8328 | else if (status->kind () != TARGET_WAITKIND_EXITED |
8329 | && status->kind () != TARGET_WAITKIND_SIGNALLED) | |
82f73884 | 8330 | { |
d7e15655 | 8331 | if (event_ptid != null_ptid) |
47f8a51d | 8332 | record_currthread (rs, event_ptid); |
82f73884 | 8333 | else |
5b6d1e4f | 8334 | event_ptid = first_remote_resumed_thread (this); |
43ff13b4 | 8335 | } |
74531fed | 8336 | else |
e7af6c70 TBA |
8337 | { |
8338 | /* A process exit. Invalidate our notion of current thread. */ | |
8339 | record_currthread (rs, minus_one_ptid); | |
8340 | /* It's possible that the packet did not include a pid. */ | |
8341 | if (event_ptid == null_ptid) | |
5b6d1e4f | 8342 | event_ptid = first_remote_resumed_thread (this); |
e7af6c70 TBA |
8343 | /* EVENT_PTID could still be NULL_PTID. Double-check. */ |
8344 | if (event_ptid == null_ptid) | |
8345 | event_ptid = magic_null_ptid; | |
8346 | } | |
79d7f229 | 8347 | |
82f73884 | 8348 | return event_ptid; |
43ff13b4 JM |
8349 | } |
8350 | ||
74531fed PA |
8351 | /* Wait until the remote machine stops, then return, storing status in |
8352 | STATUS just as `wait' would. */ | |
8353 | ||
f6ac5f3d | 8354 | ptid_t |
b60cea74 TT |
8355 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, |
8356 | target_wait_flags options) | |
c8e38a49 | 8357 | { |
2189c312 SM |
8358 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
8359 | ||
baa8575b SM |
8360 | remote_state *rs = get_remote_state (); |
8361 | ||
8362 | /* Start by clearing the flag that asks for our wait method to be called, | |
7719facb | 8363 | we'll mark it again at the end if needed. */ |
baa8575b SM |
8364 | if (target_is_async_p ()) |
8365 | clear_async_event_handler (rs->remote_async_inferior_event_token); | |
8366 | ||
c8e38a49 PA |
8367 | ptid_t event_ptid; |
8368 | ||
6efcd9a8 | 8369 | if (target_is_non_stop_p ()) |
6b8edb51 | 8370 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 8371 | else |
6b8edb51 | 8372 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 8373 | |
d9d41e78 | 8374 | if (target_is_async_p ()) |
c8e38a49 | 8375 | { |
baa8575b SM |
8376 | /* If there are events left in the queue, or unacknowledged |
8377 | notifications, then tell the event loop to call us again. */ | |
8378 | if (!rs->stop_reply_queue.empty () | |
8379 | || rs->notif_state->pending_event[notif_client_stop.id] != nullptr) | |
6b8edb51 | 8380 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
c8e38a49 | 8381 | } |
c8e38a49 PA |
8382 | |
8383 | return event_ptid; | |
8384 | } | |
8385 | ||
74ca34ce | 8386 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 8387 | |
6b8edb51 PA |
8388 | int |
8389 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
8390 | packet_reg *reg) | |
b96ec7ac | 8391 | { |
ac7936df | 8392 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 8393 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8394 | char *buf, *p; |
9890e433 | 8395 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
8396 | int i; |
8397 | ||
4082afcc | 8398 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
8399 | return 0; |
8400 | ||
8401 | if (reg->pnum == -1) | |
8402 | return 0; | |
8403 | ||
8d64371b | 8404 | p = rs->buf.data (); |
fcad0fa4 | 8405 | *p++ = 'p'; |
74ca34ce | 8406 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 8407 | *p++ = '\0'; |
1f4437a4 | 8408 | putpkt (rs->buf); |
8d64371b | 8409 | getpkt (&rs->buf, 0); |
3f9a994c | 8410 | |
8d64371b | 8411 | buf = rs->buf.data (); |
2e9f7625 | 8412 | |
8d64371b | 8413 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_p])) |
74ca34ce DJ |
8414 | { |
8415 | case PACKET_OK: | |
8416 | break; | |
8417 | case PACKET_UNKNOWN: | |
8418 | return 0; | |
8419 | case PACKET_ERROR: | |
27a9c0bf | 8420 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 8421 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
8422 | reg->regnum), |
8423 | buf); | |
74ca34ce | 8424 | } |
3f9a994c JB |
8425 | |
8426 | /* If this register is unfetchable, tell the regcache. */ | |
8427 | if (buf[0] == 'x') | |
8480adf2 | 8428 | { |
73e1c03f | 8429 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 8430 | return 1; |
b96ec7ac | 8431 | } |
b96ec7ac | 8432 | |
3f9a994c JB |
8433 | /* Otherwise, parse and supply the value. */ |
8434 | p = buf; | |
8435 | i = 0; | |
8436 | while (p[0] != 0) | |
8437 | { | |
8438 | if (p[1] == 0) | |
74ca34ce | 8439 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
8440 | |
8441 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8442 | p += 2; | |
8443 | } | |
73e1c03f | 8444 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 8445 | return 1; |
b96ec7ac AC |
8446 | } |
8447 | ||
74ca34ce DJ |
8448 | /* Fetch the registers included in the target's 'g' packet. */ |
8449 | ||
6b8edb51 PA |
8450 | int |
8451 | remote_target::send_g_packet () | |
c906108c | 8452 | { |
d01949b6 | 8453 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 8454 | int buf_len; |
c906108c | 8455 | |
8d64371b | 8456 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "g"); |
b75abf5b | 8457 | putpkt (rs->buf); |
8d64371b | 8458 | getpkt (&rs->buf, 0); |
b75abf5b AK |
8459 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
8460 | error (_("Could not read registers; remote failure reply '%s'"), | |
dda83cd7 | 8461 | rs->buf.data ()); |
c906108c | 8462 | |
29709017 DJ |
8463 | /* We can get out of synch in various cases. If the first character |
8464 | in the buffer is not a hex character, assume that has happened | |
8465 | and try to fetch another packet to read. */ | |
8466 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
8467 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
8468 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
8469 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
8470 | { | |
2189c312 | 8471 | remote_debug_printf ("Bad register packet; fetching a new packet"); |
8d64371b | 8472 | getpkt (&rs->buf, 0); |
29709017 DJ |
8473 | } |
8474 | ||
8d64371b | 8475 | buf_len = strlen (rs->buf.data ()); |
74ca34ce DJ |
8476 | |
8477 | /* Sanity check the received packet. */ | |
8478 | if (buf_len % 2 != 0) | |
8d64371b | 8479 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf.data ()); |
29709017 DJ |
8480 | |
8481 | return buf_len / 2; | |
8482 | } | |
8483 | ||
6b8edb51 PA |
8484 | void |
8485 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 8486 | { |
ac7936df | 8487 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 8488 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8489 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
8490 | int i, buf_len; |
8491 | char *p; | |
8492 | char *regs; | |
8493 | ||
8d64371b | 8494 | buf_len = strlen (rs->buf.data ()); |
29709017 DJ |
8495 | |
8496 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 8497 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 | 8498 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8d64371b TT |
8499 | "bytes): %s"), |
8500 | rsa->sizeof_g_packet, buf_len / 2, | |
8501 | rs->buf.data ()); | |
74ca34ce DJ |
8502 | |
8503 | /* Save the size of the packet sent to us by the target. It is used | |
8504 | as a heuristic when determining the max size of packets that the | |
8505 | target can safely receive. */ | |
8506 | if (rsa->actual_register_packet_size == 0) | |
8507 | rsa->actual_register_packet_size = buf_len; | |
8508 | ||
8509 | /* If this is smaller than we guessed the 'g' packet would be, | |
8510 | update our records. A 'g' reply that doesn't include a register's | |
8511 | value implies either that the register is not available, or that | |
8512 | the 'p' packet must be used. */ | |
8513 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8514 | { |
9dc193c3 | 8515 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8516 | |
4a22f64d | 8517 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8518 | { |
9dc193c3 LF |
8519 | long offset = rsa->regs[i].offset; |
8520 | long reg_size = register_size (gdbarch, i); | |
8521 | ||
74ca34ce DJ |
8522 | if (rsa->regs[i].pnum == -1) |
8523 | continue; | |
8524 | ||
9dc193c3 | 8525 | if (offset >= sizeof_g_packet) |
74ca34ce | 8526 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8527 | else if (offset + reg_size > sizeof_g_packet) |
8528 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8529 | else |
74ca34ce | 8530 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8531 | } |
9dc193c3 LF |
8532 | |
8533 | /* Looks valid enough, we can assume this is the correct length | |
dda83cd7 SM |
8534 | for a 'g' packet. It's important not to adjust |
8535 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8536 | this "if" won't be run the next time the method is called | |
8537 | with a packet of the same size and one of the internal errors | |
8538 | below will trigger instead. */ | |
9dc193c3 | 8539 | rsa->sizeof_g_packet = sizeof_g_packet; |
74ca34ce | 8540 | } |
b323314b | 8541 | |
224c3ddb | 8542 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8543 | |
8544 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8545 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8546 | |
c906108c SS |
8547 | /* Reply describes registers byte by byte, each byte encoded as two |
8548 | hex characters. Suck them all up, then supply them to the | |
8549 | register cacheing/storage mechanism. */ | |
8550 | ||
8d64371b | 8551 | p = rs->buf.data (); |
ea9c271d | 8552 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8553 | { |
74ca34ce DJ |
8554 | if (p[0] == 0 || p[1] == 0) |
8555 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
8556 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8557 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 8558 | |
c906108c | 8559 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8560 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8561 | else |
8562 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8563 | p += 2; | |
8564 | } | |
8565 | ||
a744cf53 MS |
8566 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8567 | { | |
8568 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8569 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8570 | |
8571 | if (r->in_g_packet) | |
8572 | { | |
8d64371b | 8573 | if ((r->offset + reg_size) * 2 > strlen (rs->buf.data ())) |
a744cf53 MS |
8574 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
8575 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8576 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8577 | else if (rs->buf[r->offset * 2] == 'x') |
8578 | { | |
8d64371b | 8579 | gdb_assert (r->offset * 2 < strlen (rs->buf.data ())); |
a744cf53 MS |
8580 | /* The register isn't available, mark it as such (at |
8581 | the same time setting the value to zero). */ | |
73e1c03f | 8582 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8583 | } |
8584 | else | |
73e1c03f | 8585 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8586 | } |
8587 | } | |
c906108c SS |
8588 | } |
8589 | ||
6b8edb51 PA |
8590 | void |
8591 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8592 | { |
8593 | send_g_packet (); | |
56be3814 | 8594 | process_g_packet (regcache); |
29709017 DJ |
8595 | } |
8596 | ||
e6e4e701 PA |
8597 | /* Make the remote selected traceframe match GDB's selected |
8598 | traceframe. */ | |
8599 | ||
6b8edb51 PA |
8600 | void |
8601 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8602 | { |
8603 | int newnum; | |
262e1174 | 8604 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8605 | |
262e1174 | 8606 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8607 | return; |
8608 | ||
8609 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8610 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8611 | |
8612 | newnum = target_trace_find (tfind_number, | |
8613 | get_traceframe_number (), 0, 0, NULL); | |
8614 | ||
8615 | /* Should not happen. If it does, all bets are off. */ | |
8616 | if (newnum != get_traceframe_number ()) | |
8617 | warning (_("could not set remote traceframe")); | |
8618 | } | |
8619 | ||
f6ac5f3d PA |
8620 | void |
8621 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8622 | { |
ac7936df | 8623 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8624 | struct remote_state *rs = get_remote_state (); |
8625 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8626 | int i; |
8627 | ||
e6e4e701 | 8628 | set_remote_traceframe (); |
222312d3 | 8629 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8630 | |
8631 | if (regnum >= 0) | |
8632 | { | |
5cd63fda | 8633 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8634 | |
74ca34ce DJ |
8635 | gdb_assert (reg != NULL); |
8636 | ||
8637 | /* If this register might be in the 'g' packet, try that first - | |
8638 | we are likely to read more than one register. If this is the | |
8639 | first 'g' packet, we might be overly optimistic about its | |
8640 | contents, so fall back to 'p'. */ | |
8641 | if (reg->in_g_packet) | |
8642 | { | |
56be3814 | 8643 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8644 | if (reg->in_g_packet) |
8645 | return; | |
8646 | } | |
8647 | ||
56be3814 | 8648 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8649 | return; |
8650 | ||
8651 | /* This register is not available. */ | |
73e1c03f | 8652 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8653 | |
8654 | return; | |
8655 | } | |
8656 | ||
56be3814 | 8657 | fetch_registers_using_g (regcache); |
74ca34ce | 8658 | |
5cd63fda | 8659 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8660 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8661 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8662 | { |
8663 | /* This register is not available. */ | |
73e1c03f | 8664 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8665 | } |
8666 | } | |
8667 | ||
c906108c SS |
8668 | /* Prepare to store registers. Since we may send them all (using a |
8669 | 'G' request), we have to read out the ones we don't want to change | |
8670 | first. */ | |
8671 | ||
f6ac5f3d PA |
8672 | void |
8673 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8674 | { |
9d6eea31 PA |
8675 | struct remote_state *rs = get_remote_state (); |
8676 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8677 | int i; |
cf0e1e0d | 8678 | |
c906108c | 8679 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8680 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8681 | { |
8682 | case PACKET_DISABLE: | |
8683 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8684 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8685 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8686 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8687 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8688 | break; |
8689 | case PACKET_ENABLE: | |
8690 | break; | |
8691 | } | |
8692 | } | |
8693 | ||
ad10f812 | 8694 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8695 | packet was not recognized. */ |
5a2468f5 | 8696 | |
6b8edb51 PA |
8697 | int |
8698 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8699 | packet_reg *reg) | |
5a2468f5 | 8700 | { |
ac7936df | 8701 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8702 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8703 | /* Try storing a single register. */ |
8d64371b | 8704 | char *buf = rs->buf.data (); |
9890e433 | 8705 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8706 | char *p; |
5a2468f5 | 8707 | |
4082afcc | 8708 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8709 | return 0; |
8710 | ||
8711 | if (reg->pnum == -1) | |
8712 | return 0; | |
8713 | ||
ea9c271d | 8714 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8715 | p = buf + strlen (buf); |
34a79281 | 8716 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8717 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 | 8718 | putpkt (rs->buf); |
8d64371b | 8719 | getpkt (&rs->buf, 0); |
5a2468f5 | 8720 | |
74ca34ce DJ |
8721 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8722 | { | |
8723 | case PACKET_OK: | |
8724 | return 1; | |
8725 | case PACKET_ERROR: | |
27a9c0bf | 8726 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8d64371b | 8727 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf.data ()); |
74ca34ce DJ |
8728 | case PACKET_UNKNOWN: |
8729 | return 0; | |
8730 | default: | |
8731 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8732 | } | |
c906108c SS |
8733 | } |
8734 | ||
23860348 MS |
8735 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8736 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8737 | |
6b8edb51 PA |
8738 | void |
8739 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8740 | { |
d01949b6 | 8741 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8742 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8743 | gdb_byte *regs; |
c906108c SS |
8744 | char *p; |
8745 | ||
193cb69f AC |
8746 | /* Extract all the registers in the regcache copying them into a |
8747 | local buffer. */ | |
8748 | { | |
b323314b | 8749 | int i; |
a744cf53 | 8750 | |
224c3ddb | 8751 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8752 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8753 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8754 | { |
ea9c271d | 8755 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8756 | |
b323314b | 8757 | if (r->in_g_packet) |
34a79281 | 8758 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8759 | } |
8760 | } | |
c906108c SS |
8761 | |
8762 | /* Command describes registers byte by byte, | |
8763 | each byte encoded as two hex characters. */ | |
8d64371b | 8764 | p = rs->buf.data (); |
193cb69f | 8765 | *p++ = 'G'; |
74ca34ce | 8766 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 | 8767 | putpkt (rs->buf); |
8d64371b | 8768 | getpkt (&rs->buf, 0); |
1f4437a4 | 8769 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
27a9c0bf | 8770 | error (_("Could not write registers; remote failure reply '%s'"), |
8d64371b | 8771 | rs->buf.data ()); |
c906108c | 8772 | } |
74ca34ce DJ |
8773 | |
8774 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8775 | of the register cache buffer. FIXME: ignores errors. */ | |
8776 | ||
f6ac5f3d PA |
8777 | void |
8778 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8779 | { |
5cd63fda | 8780 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8781 | struct remote_state *rs = get_remote_state (); |
8782 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8783 | int i; |
8784 | ||
e6e4e701 | 8785 | set_remote_traceframe (); |
222312d3 | 8786 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8787 | |
8788 | if (regnum >= 0) | |
8789 | { | |
5cd63fda | 8790 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8791 | |
74ca34ce DJ |
8792 | gdb_assert (reg != NULL); |
8793 | ||
8794 | /* Always prefer to store registers using the 'P' packet if | |
8795 | possible; we often change only a small number of registers. | |
8796 | Sometimes we change a larger number; we'd need help from a | |
8797 | higher layer to know to use 'G'. */ | |
56be3814 | 8798 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8799 | return; |
8800 | ||
8801 | /* For now, don't complain if we have no way to write the | |
8802 | register. GDB loses track of unavailable registers too | |
8803 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8804 | any way to read the register, either... */ |
74ca34ce DJ |
8805 | if (!reg->in_g_packet) |
8806 | return; | |
8807 | ||
56be3814 | 8808 | store_registers_using_G (regcache); |
74ca34ce DJ |
8809 | return; |
8810 | } | |
8811 | ||
56be3814 | 8812 | store_registers_using_G (regcache); |
74ca34ce | 8813 | |
5cd63fda | 8814 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8815 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8816 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8817 | /* See above for why we do not issue an error here. */ |
8818 | continue; | |
8819 | } | |
c906108c SS |
8820 | \f |
8821 | ||
8822 | /* Return the number of hex digits in num. */ | |
8823 | ||
8824 | static int | |
fba45db2 | 8825 | hexnumlen (ULONGEST num) |
c906108c SS |
8826 | { |
8827 | int i; | |
8828 | ||
8829 | for (i = 0; num != 0; i++) | |
8830 | num >>= 4; | |
8831 | ||
325fac50 | 8832 | return std::max (i, 1); |
c906108c SS |
8833 | } |
8834 | ||
2df3850c | 8835 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8836 | |
8837 | static int | |
fba45db2 | 8838 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8839 | { |
c906108c | 8840 | int len = hexnumlen (num); |
a744cf53 | 8841 | |
2df3850c JM |
8842 | return hexnumnstr (buf, num, len); |
8843 | } | |
8844 | ||
c906108c | 8845 | |
2df3850c | 8846 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8847 | |
2df3850c | 8848 | static int |
fba45db2 | 8849 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8850 | { |
8851 | int i; | |
8852 | ||
8853 | buf[width] = '\0'; | |
8854 | ||
8855 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8856 | { |
c5aa993b | 8857 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8858 | num >>= 4; |
8859 | } | |
8860 | ||
2df3850c | 8861 | return width; |
c906108c SS |
8862 | } |
8863 | ||
23860348 | 8864 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8865 | |
8866 | static CORE_ADDR | |
fba45db2 | 8867 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8868 | { |
883b9c6c | 8869 | unsigned int address_size = remote_address_size; |
a744cf53 | 8870 | |
911c95a5 UW |
8871 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8872 | if (!address_size) | |
f5656ead | 8873 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8874 | |
8875 | if (address_size > 0 | |
8876 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8877 | { |
8878 | /* Only create a mask when that mask can safely be constructed | |
dda83cd7 | 8879 | in a ULONGEST variable. */ |
c906108c | 8880 | ULONGEST mask = 1; |
a744cf53 | 8881 | |
911c95a5 | 8882 | mask = (mask << address_size) - 1; |
c906108c SS |
8883 | addr &= mask; |
8884 | } | |
8885 | return addr; | |
8886 | } | |
8887 | ||
8888 | /* Determine whether the remote target supports binary downloading. | |
8889 | This is accomplished by sending a no-op memory write of zero length | |
8890 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8891 | the whole packet, since many stubs strip the eighth bit and |
8892 | subsequently compute a wrong checksum, which causes real havoc with | |
8893 | remote_write_bytes. | |
7a292a7a | 8894 | |
96baa820 | 8895 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8896 | clean. In cases like this, the user should clear "remote |
23860348 | 8897 | X-packet". */ |
96baa820 | 8898 | |
6b8edb51 PA |
8899 | void |
8900 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 8901 | { |
d01949b6 | 8902 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8903 | |
4082afcc | 8904 | switch (packet_support (PACKET_X)) |
c906108c | 8905 | { |
96baa820 JM |
8906 | case PACKET_DISABLE: |
8907 | break; | |
8908 | case PACKET_ENABLE: | |
8909 | break; | |
8910 | case PACKET_SUPPORT_UNKNOWN: | |
8911 | { | |
96baa820 | 8912 | char *p; |
802188a7 | 8913 | |
8d64371b | 8914 | p = rs->buf.data (); |
96baa820 JM |
8915 | *p++ = 'X'; |
8916 | p += hexnumstr (p, (ULONGEST) addr); | |
8917 | *p++ = ','; | |
8918 | p += hexnumstr (p, (ULONGEST) 0); | |
8919 | *p++ = ':'; | |
8920 | *p = '\0'; | |
802188a7 | 8921 | |
8d64371b TT |
8922 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8923 | getpkt (&rs->buf, 0); | |
c906108c | 8924 | |
2e9f7625 | 8925 | if (rs->buf[0] == '\0') |
96baa820 | 8926 | { |
2189c312 | 8927 | remote_debug_printf ("binary downloading NOT supported by target"); |
444abaca | 8928 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8929 | } |
8930 | else | |
8931 | { | |
2189c312 | 8932 | remote_debug_printf ("binary downloading supported by target"); |
444abaca | 8933 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8934 | } |
8935 | break; | |
8936 | } | |
c906108c SS |
8937 | } |
8938 | } | |
8939 | ||
124e13d9 SM |
8940 | /* Helper function to resize the payload in order to try to get a good |
8941 | alignment. We try to write an amount of data such that the next write will | |
8942 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8943 | ||
8944 | static int | |
8945 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8946 | { | |
8947 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8948 | } | |
8949 | ||
c906108c SS |
8950 | /* Write memory data directly to the remote machine. |
8951 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8952 | HEADER is the starting part of the packet. |
c906108c SS |
8953 | MEMADDR is the address in the remote memory space. |
8954 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8955 | LEN_UNITS is the number of addressable units to write. |
8956 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8957 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8958 | should send data as binary ('X'), or hex-encoded ('M'). | |
8959 | ||
8960 | The function creates packet of the form | |
8961 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8962 | ||
124e13d9 | 8963 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8964 | |
8965 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8966 | are omitted. | |
8967 | ||
9b409511 | 8968 | Return the transferred status, error or OK (an |
124e13d9 SM |
8969 | 'enum target_xfer_status' value). Save the number of addressable units |
8970 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8971 | ||
8972 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8973 | exchange between gdb and the stub could look like (?? in place of the | |
8974 | checksum): | |
8975 | ||
8976 | -> $m1000,4#?? | |
8977 | <- aaaabbbbccccdddd | |
8978 | ||
8979 | -> $M1000,3:eeeeffffeeee#?? | |
8980 | <- OK | |
8981 | ||
8982 | -> $m1000,4#?? | |
8983 | <- eeeeffffeeeedddd */ | |
c906108c | 8984 | |
6b8edb51 PA |
8985 | target_xfer_status |
8986 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
8987 | const gdb_byte *myaddr, | |
8988 | ULONGEST len_units, | |
8989 | int unit_size, | |
8990 | ULONGEST *xfered_len_units, | |
8991 | char packet_format, int use_length) | |
c906108c | 8992 | { |
6d820c5c | 8993 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8994 | char *p; |
a76d924d DJ |
8995 | char *plen = NULL; |
8996 | int plenlen = 0; | |
124e13d9 SM |
8997 | int todo_units; |
8998 | int units_written; | |
8999 | int payload_capacity_bytes; | |
9000 | int payload_length_bytes; | |
a76d924d DJ |
9001 | |
9002 | if (packet_format != 'X' && packet_format != 'M') | |
9003 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 9004 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 9005 | |
124e13d9 | 9006 | if (len_units == 0) |
9b409511 | 9007 | return TARGET_XFER_EOF; |
b2182ed2 | 9008 | |
124e13d9 | 9009 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 9010 | |
6d820c5c DJ |
9011 | /* The packet buffer will be large enough for the payload; |
9012 | get_memory_packet_size ensures this. */ | |
a76d924d | 9013 | rs->buf[0] = '\0'; |
c906108c | 9014 | |
a257b5bb | 9015 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
9016 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
9017 | ||
124e13d9 | 9018 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 9019 | if (!use_length) |
0df8b418 | 9020 | /* The comma won't be used. */ |
124e13d9 SM |
9021 | payload_capacity_bytes += 1; |
9022 | payload_capacity_bytes -= strlen (header); | |
9023 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 9024 | |
a76d924d | 9025 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 9026 | |
8d64371b TT |
9027 | strcat (rs->buf.data (), header); |
9028 | p = rs->buf.data () + strlen (header); | |
a76d924d DJ |
9029 | |
9030 | /* Compute a best guess of the number of bytes actually transfered. */ | |
9031 | if (packet_format == 'X') | |
c906108c | 9032 | { |
23860348 | 9033 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
9034 | todo_units = std::min (len_units, |
9035 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 9036 | if (use_length) |
124e13d9 | 9037 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 9038 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
9039 | } |
9040 | else | |
9041 | { | |
124e13d9 | 9042 | /* Number of bytes that will fit. */ |
325fac50 PA |
9043 | todo_units |
9044 | = std::min (len_units, | |
9045 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 9046 | if (use_length) |
124e13d9 | 9047 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
9048 | todo_units = std::min (todo_units, |
9049 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 9050 | } |
a76d924d | 9051 | |
124e13d9 | 9052 | if (todo_units <= 0) |
3de11b2e | 9053 | internal_error (__FILE__, __LINE__, |
405f8e94 | 9054 | _("minimum packet size too small to write data")); |
802188a7 | 9055 | |
6765f3e5 DJ |
9056 | /* If we already need another packet, then try to align the end |
9057 | of this packet to a useful boundary. */ | |
124e13d9 SM |
9058 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
9059 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 9060 | |
a257b5bb | 9061 | /* Append "<memaddr>". */ |
917317f4 JM |
9062 | memaddr = remote_address_masked (memaddr); |
9063 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 9064 | |
a76d924d DJ |
9065 | if (use_length) |
9066 | { | |
9067 | /* Append ",". */ | |
9068 | *p++ = ','; | |
802188a7 | 9069 | |
124e13d9 | 9070 | /* Append the length and retain its location and size. It may need to be |
dda83cd7 | 9071 | adjusted once the packet body has been created. */ |
a76d924d | 9072 | plen = p; |
124e13d9 | 9073 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
9074 | p += plenlen; |
9075 | } | |
a257b5bb AC |
9076 | |
9077 | /* Append ":". */ | |
917317f4 JM |
9078 | *p++ = ':'; |
9079 | *p = '\0'; | |
802188a7 | 9080 | |
a257b5bb | 9081 | /* Append the packet body. */ |
a76d924d | 9082 | if (packet_format == 'X') |
917317f4 | 9083 | { |
917317f4 JM |
9084 | /* Binary mode. Send target system values byte by byte, in |
9085 | increasing byte addresses. Only escape certain critical | |
9086 | characters. */ | |
124e13d9 SM |
9087 | payload_length_bytes = |
9088 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
9089 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 9090 | |
124e13d9 | 9091 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
9092 | a second try to keep the end of the packet aligned. Don't do |
9093 | this if the packet is tiny. */ | |
124e13d9 | 9094 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 9095 | { |
124e13d9 SM |
9096 | int new_todo_units; |
9097 | ||
9098 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
9099 | ||
9100 | if (new_todo_units != units_written) | |
9101 | payload_length_bytes = | |
9102 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
9103 | (gdb_byte *) p, &units_written, | |
9104 | payload_capacity_bytes); | |
6765f3e5 DJ |
9105 | } |
9106 | ||
124e13d9 SM |
9107 | p += payload_length_bytes; |
9108 | if (use_length && units_written < todo_units) | |
c906108c | 9109 | { |
802188a7 | 9110 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 9111 | and we have actually sent fewer units than planned. |
917317f4 JM |
9112 | Fix-up the length field of the packet. Use the same |
9113 | number of characters as before. */ | |
124e13d9 SM |
9114 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
9115 | plenlen); | |
917317f4 | 9116 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 9117 | } |
a76d924d DJ |
9118 | } |
9119 | else | |
9120 | { | |
917317f4 JM |
9121 | /* Normal mode: Send target system values byte by byte, in |
9122 | increasing byte addresses. Each byte is encoded as a two hex | |
9123 | value. */ | |
124e13d9 SM |
9124 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
9125 | units_written = todo_units; | |
c906108c | 9126 | } |
802188a7 | 9127 | |
8d64371b TT |
9128 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
9129 | getpkt (&rs->buf, 0); | |
802188a7 | 9130 | |
2e9f7625 | 9131 | if (rs->buf[0] == 'E') |
00d84524 | 9132 | return TARGET_XFER_E_IO; |
802188a7 | 9133 | |
124e13d9 SM |
9134 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
9135 | send fewer units than we'd planned. */ | |
9136 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 9137 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
9138 | } |
9139 | ||
a76d924d DJ |
9140 | /* Write memory data directly to the remote machine. |
9141 | This does not inform the data cache; the data cache uses this. | |
9142 | MEMADDR is the address in the remote memory space. | |
9143 | MYADDR is the address of the buffer in our space. | |
9144 | LEN is the number of bytes. | |
9145 | ||
9b409511 YQ |
9146 | Return the transferred status, error or OK (an |
9147 | 'enum target_xfer_status' value). Save the number of bytes | |
9148 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 9149 | |
6b8edb51 PA |
9150 | target_xfer_status |
9151 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
9152 | ULONGEST len, int unit_size, | |
9153 | ULONGEST *xfered_len) | |
a76d924d | 9154 | { |
a121b7c1 | 9155 | const char *packet_format = NULL; |
a76d924d DJ |
9156 | |
9157 | /* Check whether the target supports binary download. */ | |
9158 | check_binary_download (memaddr); | |
9159 | ||
4082afcc | 9160 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
9161 | { |
9162 | case PACKET_ENABLE: | |
9163 | packet_format = "X"; | |
9164 | break; | |
9165 | case PACKET_DISABLE: | |
9166 | packet_format = "M"; | |
9167 | break; | |
9168 | case PACKET_SUPPORT_UNKNOWN: | |
9169 | internal_error (__FILE__, __LINE__, | |
9170 | _("remote_write_bytes: bad internal state")); | |
9171 | default: | |
9172 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
9173 | } | |
9174 | ||
9175 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 9176 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 9177 | packet_format[0], 1); |
a76d924d DJ |
9178 | } |
9179 | ||
9217e74e YQ |
9180 | /* Read memory data directly from the remote machine. |
9181 | This does not use the data cache; the data cache uses this. | |
9182 | MEMADDR is the address in the remote memory space. | |
9183 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
9184 | LEN_UNITS is the number of addressable memory units to read.. |
9185 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
9186 | |
9187 | Return the transferred status, error or OK (an | |
9188 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
9189 | transferred in *XFERED_LEN_UNITS. |
9190 | ||
9191 | See the comment of remote_write_bytes_aux for an example of | |
9192 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 9193 | |
6b8edb51 PA |
9194 | target_xfer_status |
9195 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
9196 | ULONGEST len_units, | |
9197 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
9198 | { |
9199 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 9200 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 9201 | char *p; |
124e13d9 SM |
9202 | int todo_units; |
9203 | int decoded_bytes; | |
9217e74e | 9204 | |
124e13d9 | 9205 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
9206 | /* The packet buffer will be large enough for the payload; |
9207 | get_memory_packet_size ensures this. */ | |
9208 | ||
124e13d9 | 9209 | /* Number of units that will fit. */ |
325fac50 PA |
9210 | todo_units = std::min (len_units, |
9211 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
9212 | |
9213 | /* Construct "m"<memaddr>","<len>". */ | |
9214 | memaddr = remote_address_masked (memaddr); | |
8d64371b | 9215 | p = rs->buf.data (); |
9217e74e YQ |
9216 | *p++ = 'm'; |
9217 | p += hexnumstr (p, (ULONGEST) memaddr); | |
9218 | *p++ = ','; | |
124e13d9 | 9219 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
9220 | *p = '\0'; |
9221 | putpkt (rs->buf); | |
8d64371b | 9222 | getpkt (&rs->buf, 0); |
9217e74e YQ |
9223 | if (rs->buf[0] == 'E' |
9224 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
9225 | && rs->buf[3] == '\0') | |
9226 | return TARGET_XFER_E_IO; | |
9227 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
9228 | characters. */ | |
8d64371b | 9229 | p = rs->buf.data (); |
124e13d9 | 9230 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 9231 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 9232 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 9233 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
9234 | } |
9235 | ||
b55fbac4 YQ |
9236 | /* Using the set of read-only target sections of remote, read live |
9237 | read-only memory. | |
8acf9577 YQ |
9238 | |
9239 | For interface/parameters/return description see target.h, | |
9240 | to_xfer_partial. */ | |
9241 | ||
6b8edb51 PA |
9242 | target_xfer_status |
9243 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
9244 | ULONGEST memaddr, | |
9245 | ULONGEST len, | |
9246 | int unit_size, | |
9247 | ULONGEST *xfered_len) | |
8acf9577 | 9248 | { |
19cf757a | 9249 | const struct target_section *secp; |
8acf9577 | 9250 | |
6b8edb51 | 9251 | secp = target_section_by_addr (this, memaddr); |
8acf9577 | 9252 | if (secp != NULL |
fd361982 | 9253 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
8acf9577 | 9254 | { |
8acf9577 YQ |
9255 | ULONGEST memend = memaddr + len; |
9256 | ||
19cf757a AB |
9257 | const target_section_table *table = target_get_section_table (this); |
9258 | for (const target_section &p : *table) | |
8acf9577 | 9259 | { |
bb2a6777 | 9260 | if (memaddr >= p.addr) |
8acf9577 | 9261 | { |
bb2a6777 | 9262 | if (memend <= p.endaddr) |
8acf9577 YQ |
9263 | { |
9264 | /* Entire transfer is within this section. */ | |
124e13d9 | 9265 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9266 | xfered_len); |
8acf9577 | 9267 | } |
bb2a6777 | 9268 | else if (memaddr >= p.endaddr) |
8acf9577 YQ |
9269 | { |
9270 | /* This section ends before the transfer starts. */ | |
9271 | continue; | |
9272 | } | |
9273 | else | |
9274 | { | |
9275 | /* This section overlaps the transfer. Just do half. */ | |
bb2a6777 | 9276 | len = p.endaddr - memaddr; |
124e13d9 | 9277 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9278 | xfered_len); |
8acf9577 YQ |
9279 | } |
9280 | } | |
9281 | } | |
9282 | } | |
9283 | ||
9284 | return TARGET_XFER_EOF; | |
9285 | } | |
9286 | ||
9217e74e YQ |
9287 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
9288 | first if the requested memory is unavailable in traceframe. | |
9289 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 9290 | |
6b8edb51 PA |
9291 | target_xfer_status |
9292 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
9293 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
9294 | ULONGEST *xfered_len) | |
c906108c | 9295 | { |
6b6aa828 | 9296 | if (len == 0) |
96c4f946 | 9297 | return TARGET_XFER_EOF; |
b2182ed2 | 9298 | |
8acf9577 YQ |
9299 | if (get_traceframe_number () != -1) |
9300 | { | |
a79b1bc6 | 9301 | std::vector<mem_range> available; |
8acf9577 YQ |
9302 | |
9303 | /* If we fail to get the set of available memory, then the | |
9304 | target does not support querying traceframe info, and so we | |
9305 | attempt reading from the traceframe anyway (assuming the | |
9306 | target implements the old QTro packet then). */ | |
9307 | if (traceframe_available_memory (&available, memaddr, len)) | |
9308 | { | |
a79b1bc6 | 9309 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
9310 | { |
9311 | enum target_xfer_status res; | |
9312 | ||
9313 | /* Don't read into the traceframe's available | |
9314 | memory. */ | |
a79b1bc6 | 9315 | if (!available.empty ()) |
8acf9577 YQ |
9316 | { |
9317 | LONGEST oldlen = len; | |
9318 | ||
a79b1bc6 | 9319 | len = available[0].start - memaddr; |
8acf9577 YQ |
9320 | gdb_assert (len <= oldlen); |
9321 | } | |
9322 | ||
8acf9577 | 9323 | /* This goes through the topmost target again. */ |
6b8edb51 | 9324 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 9325 | len, unit_size, xfered_len); |
8acf9577 YQ |
9326 | if (res == TARGET_XFER_OK) |
9327 | return TARGET_XFER_OK; | |
9328 | else | |
9329 | { | |
9330 | /* No use trying further, we know some memory starting | |
9331 | at MEMADDR isn't available. */ | |
9332 | *xfered_len = len; | |
92ffd475 PC |
9333 | return (*xfered_len != 0) ? |
9334 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
9335 | } |
9336 | } | |
9337 | ||
9338 | /* Don't try to read more than how much is available, in | |
9339 | case the target implements the deprecated QTro packet to | |
9340 | cater for older GDBs (the target's knowledge of read-only | |
9341 | sections may be outdated by now). */ | |
a79b1bc6 | 9342 | len = available[0].length; |
8acf9577 YQ |
9343 | } |
9344 | } | |
9345 | ||
124e13d9 | 9346 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 9347 | } |
74531fed | 9348 | |
c906108c | 9349 | \f |
c906108c | 9350 | |
a76d924d DJ |
9351 | /* Sends a packet with content determined by the printf format string |
9352 | FORMAT and the remaining arguments, then gets the reply. Returns | |
9353 | whether the packet was a success, a failure, or unknown. */ | |
9354 | ||
6b8edb51 PA |
9355 | packet_result |
9356 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
9357 | { |
9358 | struct remote_state *rs = get_remote_state (); | |
9359 | int max_size = get_remote_packet_size (); | |
a76d924d | 9360 | va_list ap; |
a744cf53 | 9361 | |
a76d924d DJ |
9362 | va_start (ap, format); |
9363 | ||
9364 | rs->buf[0] = '\0'; | |
8d64371b | 9365 | int size = vsnprintf (rs->buf.data (), max_size, format, ap); |
33b031ce GB |
9366 | |
9367 | va_end (ap); | |
9368 | ||
9369 | if (size >= max_size) | |
9b20d036 | 9370 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
9371 | |
9372 | if (putpkt (rs->buf) < 0) | |
9373 | error (_("Communication problem with target.")); | |
9374 | ||
9375 | rs->buf[0] = '\0'; | |
8d64371b | 9376 | getpkt (&rs->buf, 0); |
a76d924d DJ |
9377 | |
9378 | return packet_check_result (rs->buf); | |
9379 | } | |
9380 | ||
a76d924d DJ |
9381 | /* Flash writing can take quite some time. We'll set |
9382 | effectively infinite timeout for flash operations. | |
9383 | In future, we'll need to decide on a better approach. */ | |
9384 | static const int remote_flash_timeout = 1000; | |
9385 | ||
f6ac5f3d PA |
9386 | void |
9387 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 9388 | { |
f5656ead | 9389 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 9390 | enum packet_result ret; |
2ec845e7 TT |
9391 | scoped_restore restore_timeout |
9392 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
9393 | |
9394 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 9395 | phex (address, addr_size), |
a76d924d DJ |
9396 | phex (length, 4)); |
9397 | switch (ret) | |
9398 | { | |
9399 | case PACKET_UNKNOWN: | |
9400 | error (_("Remote target does not support flash erase")); | |
9401 | case PACKET_ERROR: | |
9402 | error (_("Error erasing flash with vFlashErase packet")); | |
9403 | default: | |
9404 | break; | |
9405 | } | |
a76d924d DJ |
9406 | } |
9407 | ||
6b8edb51 PA |
9408 | target_xfer_status |
9409 | remote_target::remote_flash_write (ULONGEST address, | |
9410 | ULONGEST length, ULONGEST *xfered_len, | |
9411 | const gdb_byte *data) | |
a76d924d | 9412 | { |
2ec845e7 TT |
9413 | scoped_restore restore_timeout |
9414 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9415 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
9416 | xfered_len,'X', 0); | |
a76d924d DJ |
9417 | } |
9418 | ||
f6ac5f3d PA |
9419 | void |
9420 | remote_target::flash_done () | |
a76d924d | 9421 | { |
a76d924d | 9422 | int ret; |
a76d924d | 9423 | |
2ec845e7 TT |
9424 | scoped_restore restore_timeout |
9425 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9426 | ||
a76d924d | 9427 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
9428 | |
9429 | switch (ret) | |
9430 | { | |
9431 | case PACKET_UNKNOWN: | |
9432 | error (_("Remote target does not support vFlashDone")); | |
9433 | case PACKET_ERROR: | |
9434 | error (_("Error finishing flash operation")); | |
9435 | default: | |
9436 | break; | |
9437 | } | |
9438 | } | |
9439 | ||
f6ac5f3d PA |
9440 | void |
9441 | remote_target::files_info () | |
c906108c SS |
9442 | { |
9443 | puts_filtered ("Debugging a target over a serial line.\n"); | |
9444 | } | |
9445 | \f | |
9446 | /* Stuff for dealing with the packets which are part of this protocol. | |
9447 | See comment at top of file for details. */ | |
9448 | ||
1927e618 PA |
9449 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
9450 | error to higher layers. Called when a serial error is detected. | |
9451 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
9452 | the system error message for errno at function entry and final dot |
9453 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
9454 | |
9455 | static void | |
5b6d1e4f | 9456 | unpush_and_perror (remote_target *target, const char *string) |
1927e618 | 9457 | { |
d6cb50a2 | 9458 | int saved_errno = errno; |
1927e618 | 9459 | |
5b6d1e4f | 9460 | remote_unpush_target (target); |
d6cb50a2 JK |
9461 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
9462 | safe_strerror (saved_errno)); | |
1927e618 PA |
9463 | } |
9464 | ||
048094ac PA |
9465 | /* Read a single character from the remote end. The current quit |
9466 | handler is overridden to avoid quitting in the middle of packet | |
9467 | sequence, as that would break communication with the remote server. | |
9468 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 9469 | |
6b8edb51 PA |
9470 | int |
9471 | remote_target::readchar (int timeout) | |
c906108c SS |
9472 | { |
9473 | int ch; | |
5d93a237 | 9474 | struct remote_state *rs = get_remote_state (); |
048094ac | 9475 | |
2ec845e7 | 9476 | { |
6b8edb51 PA |
9477 | scoped_restore restore_quit_target |
9478 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9479 | scoped_restore restore_quit |
6b8edb51 | 9480 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 9481 | |
2ec845e7 | 9482 | rs->got_ctrlc_during_io = 0; |
c906108c | 9483 | |
2ec845e7 | 9484 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 9485 | |
2ec845e7 TT |
9486 | if (rs->got_ctrlc_during_io) |
9487 | set_quit_flag (); | |
9488 | } | |
048094ac | 9489 | |
2acceee2 | 9490 | if (ch >= 0) |
0876f84a | 9491 | return ch; |
2acceee2 JM |
9492 | |
9493 | switch ((enum serial_rc) ch) | |
c906108c SS |
9494 | { |
9495 | case SERIAL_EOF: | |
5b6d1e4f | 9496 | remote_unpush_target (this); |
598d3636 | 9497 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 9498 | /* no return */ |
c906108c | 9499 | case SERIAL_ERROR: |
5b6d1e4f PA |
9500 | unpush_and_perror (this, _("Remote communication error. " |
9501 | "Target disconnected.")); | |
2acceee2 | 9502 | /* no return */ |
c906108c | 9503 | case SERIAL_TIMEOUT: |
2acceee2 | 9504 | break; |
c906108c | 9505 | } |
2acceee2 | 9506 | return ch; |
c906108c SS |
9507 | } |
9508 | ||
c33e31fd | 9509 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9510 | writing fails. The current quit handler is overridden to avoid |
9511 | quitting in the middle of packet sequence, as that would break | |
9512 | communication with the remote server. See | |
9513 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9514 | |
6b8edb51 PA |
9515 | void |
9516 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9517 | { |
5d93a237 | 9518 | struct remote_state *rs = get_remote_state (); |
048094ac | 9519 | |
6b8edb51 PA |
9520 | scoped_restore restore_quit_target |
9521 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9522 | scoped_restore restore_quit |
6b8edb51 | 9523 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9524 | |
9525 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9526 | |
9527 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9528 | { |
5b6d1e4f PA |
9529 | unpush_and_perror (this, _("Remote communication error. " |
9530 | "Target disconnected.")); | |
c33e31fd | 9531 | } |
048094ac PA |
9532 | |
9533 | if (rs->got_ctrlc_during_io) | |
9534 | set_quit_flag (); | |
c33e31fd PA |
9535 | } |
9536 | ||
b3ced9ba PA |
9537 | /* Return a string representing an escaped version of BUF, of len N. |
9538 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9539 | |
b3ced9ba | 9540 | static std::string |
6e5abd65 PA |
9541 | escape_buffer (const char *buf, int n) |
9542 | { | |
d7e74731 | 9543 | string_file stb; |
6e5abd65 | 9544 | |
d7e74731 PA |
9545 | stb.putstrn (buf, n, '\\'); |
9546 | return std::move (stb.string ()); | |
6e5abd65 PA |
9547 | } |
9548 | ||
c906108c | 9549 | int |
6b8edb51 | 9550 | remote_target::putpkt (const char *buf) |
c906108c SS |
9551 | { |
9552 | return putpkt_binary (buf, strlen (buf)); | |
9553 | } | |
9554 | ||
6b8edb51 PA |
9555 | /* Wrapper around remote_target::putpkt to avoid exporting |
9556 | remote_target. */ | |
9557 | ||
9558 | int | |
9559 | putpkt (remote_target *remote, const char *buf) | |
9560 | { | |
9561 | return remote->putpkt (buf); | |
9562 | } | |
9563 | ||
c906108c | 9564 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9565 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9566 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9567 | and for a possible /0 if we are debugging (remote_debug) and want |
9568 | to print the sent packet as a string. */ | |
c906108c | 9569 | |
6b8edb51 PA |
9570 | int |
9571 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9572 | { |
2d717e4f | 9573 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9574 | int i; |
9575 | unsigned char csum = 0; | |
b80406ac TT |
9576 | gdb::def_vector<char> data (cnt + 6); |
9577 | char *buf2 = data.data (); | |
085dd6e6 | 9578 | |
c906108c SS |
9579 | int ch; |
9580 | int tcount = 0; | |
9581 | char *p; | |
9582 | ||
e24a49d8 PA |
9583 | /* Catch cases like trying to read memory or listing threads while |
9584 | we're waiting for a stop reply. The remote server wouldn't be | |
9585 | ready to handle this request, so we'd hang and timeout. We don't | |
9586 | have to worry about this in synchronous mode, because in that | |
9587 | case it's not possible to issue a command while the target is | |
74531fed PA |
9588 | running. This is not a problem in non-stop mode, because in that |
9589 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9590 | if (!target_is_non_stop_p () |
9591 | && target_is_async_p () | |
9592 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9593 | { |
9594 | error (_("Cannot execute this command while the target is running.\n" | |
9595 | "Use the \"interrupt\" command to stop the target\n" | |
9596 | "and then try again.")); | |
9597 | } | |
e24a49d8 | 9598 | |
2d717e4f DJ |
9599 | /* We're sending out a new packet. Make sure we don't look at a |
9600 | stale cached response. */ | |
9601 | rs->cached_wait_status = 0; | |
9602 | ||
c906108c SS |
9603 | /* Copy the packet into buffer BUF2, encapsulating it |
9604 | and giving it a checksum. */ | |
9605 | ||
c906108c SS |
9606 | p = buf2; |
9607 | *p++ = '$'; | |
9608 | ||
9609 | for (i = 0; i < cnt; i++) | |
9610 | { | |
9611 | csum += buf[i]; | |
9612 | *p++ = buf[i]; | |
9613 | } | |
9614 | *p++ = '#'; | |
9615 | *p++ = tohex ((csum >> 4) & 0xf); | |
9616 | *p++ = tohex (csum & 0xf); | |
9617 | ||
9618 | /* Send it over and over until we get a positive ack. */ | |
9619 | ||
9620 | while (1) | |
9621 | { | |
c906108c SS |
9622 | if (remote_debug) |
9623 | { | |
9624 | *p = '\0'; | |
b3ced9ba | 9625 | |
6f8976bf | 9626 | int len = (int) (p - buf2); |
6cc8564b LM |
9627 | int max_chars; |
9628 | ||
9629 | if (remote_packet_max_chars < 0) | |
9630 | max_chars = len; | |
9631 | else | |
9632 | max_chars = remote_packet_max_chars; | |
6f8976bf YQ |
9633 | |
9634 | std::string str | |
6cc8564b | 9635 | = escape_buffer (buf2, std::min (len, max_chars)); |
6f8976bf | 9636 | |
6cc8564b | 9637 | if (len > max_chars) |
2189c312 SM |
9638 | remote_debug_printf_nofunc |
9639 | ("Sending packet: %s [%d bytes omitted]", str.c_str (), | |
9640 | len - max_chars); | |
9641 | else | |
9642 | remote_debug_printf_nofunc ("Sending packet: %s", str.c_str ()); | |
c906108c | 9643 | } |
c33e31fd | 9644 | remote_serial_write (buf2, p - buf2); |
c906108c | 9645 | |
a6f3e723 SL |
9646 | /* If this is a no acks version of the remote protocol, send the |
9647 | packet and move on. */ | |
9648 | if (rs->noack_mode) | |
dda83cd7 | 9649 | break; |
a6f3e723 | 9650 | |
74531fed PA |
9651 | /* Read until either a timeout occurs (-2) or '+' is read. |
9652 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9653 | while (1) |
9654 | { | |
9655 | ch = readchar (remote_timeout); | |
9656 | ||
c906108c SS |
9657 | switch (ch) |
9658 | { | |
9659 | case '+': | |
2189c312 | 9660 | remote_debug_printf_nofunc ("Received Ack"); |
c906108c | 9661 | return 1; |
1216fa2c | 9662 | case '-': |
2189c312 | 9663 | remote_debug_printf_nofunc ("Received Nak"); |
a17d146e | 9664 | /* FALLTHROUGH */ |
c906108c | 9665 | case SERIAL_TIMEOUT: |
c5aa993b | 9666 | tcount++; |
c906108c | 9667 | if (tcount > 3) |
b80406ac | 9668 | return 0; |
23860348 | 9669 | break; /* Retransmit buffer. */ |
c906108c SS |
9670 | case '$': |
9671 | { | |
2189c312 | 9672 | remote_debug_printf ("Packet instead of Ack, ignoring it"); |
d6f7abdf AC |
9673 | /* It's probably an old response sent because an ACK |
9674 | was lost. Gobble up the packet and ack it so it | |
9675 | doesn't get retransmitted when we resend this | |
9676 | packet. */ | |
6d820c5c | 9677 | skip_frame (); |
c33e31fd | 9678 | remote_serial_write ("+", 1); |
23860348 | 9679 | continue; /* Now, go look for +. */ |
c906108c | 9680 | } |
74531fed PA |
9681 | |
9682 | case '%': | |
9683 | { | |
9684 | int val; | |
9685 | ||
9686 | /* If we got a notification, handle it, and go back to looking | |
9687 | for an ack. */ | |
9688 | /* We've found the start of a notification. Now | |
9689 | collect the data. */ | |
8d64371b | 9690 | val = read_frame (&rs->buf); |
74531fed PA |
9691 | if (val >= 0) |
9692 | { | |
2189c312 SM |
9693 | remote_debug_printf_nofunc |
9694 | (" Notification received: %s", | |
9695 | escape_buffer (rs->buf.data (), val).c_str ()); | |
6e5abd65 | 9696 | |
8d64371b | 9697 | handle_notification (rs->notif_state, rs->buf.data ()); |
74531fed PA |
9698 | /* We're in sync now, rewait for the ack. */ |
9699 | tcount = 0; | |
9700 | } | |
9701 | else | |
2189c312 SM |
9702 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9703 | rs->buf.data ()); | |
74531fed PA |
9704 | continue; |
9705 | } | |
9706 | /* fall-through */ | |
c906108c | 9707 | default: |
2189c312 SM |
9708 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9709 | rs->buf.data ()); | |
c906108c SS |
9710 | continue; |
9711 | } | |
23860348 | 9712 | break; /* Here to retransmit. */ |
c906108c SS |
9713 | } |
9714 | ||
9715 | #if 0 | |
9716 | /* This is wrong. If doing a long backtrace, the user should be | |
dda83cd7 SM |
9717 | able to get out next time we call QUIT, without anything as |
9718 | violent as interrupt_query. If we want to provide a way out of | |
9719 | here without getting to the next QUIT, it should be based on | |
9720 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9721 | if (quit_flag) |
9722 | { | |
9723 | quit_flag = 0; | |
9724 | interrupt_query (); | |
9725 | } | |
9726 | #endif | |
9727 | } | |
a5c0808e | 9728 | |
a6f3e723 | 9729 | return 0; |
c906108c SS |
9730 | } |
9731 | ||
6d820c5c DJ |
9732 | /* Come here after finding the start of a frame when we expected an |
9733 | ack. Do our best to discard the rest of this packet. */ | |
9734 | ||
6b8edb51 PA |
9735 | void |
9736 | remote_target::skip_frame () | |
6d820c5c DJ |
9737 | { |
9738 | int c; | |
9739 | ||
9740 | while (1) | |
9741 | { | |
9742 | c = readchar (remote_timeout); | |
9743 | switch (c) | |
9744 | { | |
9745 | case SERIAL_TIMEOUT: | |
9746 | /* Nothing we can do. */ | |
9747 | return; | |
9748 | case '#': | |
9749 | /* Discard the two bytes of checksum and stop. */ | |
9750 | c = readchar (remote_timeout); | |
9751 | if (c >= 0) | |
9752 | c = readchar (remote_timeout); | |
9753 | ||
9754 | return; | |
9755 | case '*': /* Run length encoding. */ | |
9756 | /* Discard the repeat count. */ | |
9757 | c = readchar (remote_timeout); | |
9758 | if (c < 0) | |
9759 | return; | |
9760 | break; | |
9761 | default: | |
9762 | /* A regular character. */ | |
9763 | break; | |
9764 | } | |
9765 | } | |
9766 | } | |
9767 | ||
c906108c | 9768 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9769 | into *BUF, verifying the checksum, length, and handling run-length |
9770 | compression. NUL terminate the buffer. If there is not enough room, | |
8d64371b | 9771 | expand *BUF. |
c906108c | 9772 | |
c2d11a7d JM |
9773 | Returns -1 on error, number of characters in buffer (ignoring the |
9774 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9775 | SERIAL status indications). */ |
c2d11a7d | 9776 | |
6b8edb51 | 9777 | long |
8d64371b | 9778 | remote_target::read_frame (gdb::char_vector *buf_p) |
c906108c SS |
9779 | { |
9780 | unsigned char csum; | |
c2d11a7d | 9781 | long bc; |
c906108c | 9782 | int c; |
8d64371b | 9783 | char *buf = buf_p->data (); |
a6f3e723 | 9784 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9785 | |
9786 | csum = 0; | |
c2d11a7d | 9787 | bc = 0; |
c906108c SS |
9788 | |
9789 | while (1) | |
9790 | { | |
9791 | c = readchar (remote_timeout); | |
c906108c SS |
9792 | switch (c) |
9793 | { | |
9794 | case SERIAL_TIMEOUT: | |
2189c312 | 9795 | remote_debug_printf ("Timeout in mid-packet, retrying"); |
c2d11a7d | 9796 | return -1; |
2189c312 | 9797 | |
c906108c | 9798 | case '$': |
2189c312 | 9799 | remote_debug_printf ("Saw new packet start in middle of old one"); |
23860348 | 9800 | return -1; /* Start a new packet, count retries. */ |
2189c312 | 9801 | |
c906108c SS |
9802 | case '#': |
9803 | { | |
9804 | unsigned char pktcsum; | |
e1b09194 AC |
9805 | int check_0 = 0; |
9806 | int check_1 = 0; | |
c906108c | 9807 | |
c2d11a7d | 9808 | buf[bc] = '\0'; |
c906108c | 9809 | |
e1b09194 AC |
9810 | check_0 = readchar (remote_timeout); |
9811 | if (check_0 >= 0) | |
9812 | check_1 = readchar (remote_timeout); | |
802188a7 | 9813 | |
e1b09194 AC |
9814 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9815 | { | |
2189c312 | 9816 | remote_debug_printf ("Timeout in checksum, retrying"); |
e1b09194 AC |
9817 | return -1; |
9818 | } | |
9819 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 | 9820 | { |
2189c312 | 9821 | remote_debug_printf ("Communication error in checksum"); |
40e3f985 FN |
9822 | return -1; |
9823 | } | |
c906108c | 9824 | |
a6f3e723 SL |
9825 | /* Don't recompute the checksum; with no ack packets we |
9826 | don't have any way to indicate a packet retransmission | |
9827 | is necessary. */ | |
9828 | if (rs->noack_mode) | |
9829 | return bc; | |
9830 | ||
e1b09194 | 9831 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9832 | if (csum == pktcsum) |
dda83cd7 | 9833 | return bc; |
c906108c | 9834 | |
2189c312 SM |
9835 | remote_debug_printf |
9836 | ("Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s", | |
9837 | pktcsum, csum, escape_buffer (buf, bc).c_str ()); | |
6e5abd65 | 9838 | |
c2d11a7d | 9839 | /* Number of characters in buffer ignoring trailing |
dda83cd7 | 9840 | NULL. */ |
c2d11a7d | 9841 | return -1; |
c906108c | 9842 | } |
23860348 | 9843 | case '*': /* Run length encoding. */ |
dda83cd7 | 9844 | { |
c2c6d25f | 9845 | int repeat; |
c906108c | 9846 | |
24b21115 | 9847 | csum += c; |
b4501125 AC |
9848 | c = readchar (remote_timeout); |
9849 | csum += c; | |
23860348 | 9850 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9851 | |
23860348 | 9852 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9853 | |
6d820c5c | 9854 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9855 | { |
8d64371b | 9856 | if (bc + repeat - 1 >= buf_p->size () - 1) |
6d820c5c DJ |
9857 | { |
9858 | /* Make some more room in the buffer. */ | |
8d64371b TT |
9859 | buf_p->resize (buf_p->size () + repeat); |
9860 | buf = buf_p->data (); | |
6d820c5c DJ |
9861 | } |
9862 | ||
c2d11a7d JM |
9863 | memset (&buf[bc], buf[bc - 1], repeat); |
9864 | bc += repeat; | |
c2c6d25f JM |
9865 | continue; |
9866 | } | |
9867 | ||
c2d11a7d | 9868 | buf[bc] = '\0'; |
6d820c5c | 9869 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9870 | return -1; |
c2c6d25f | 9871 | } |
c906108c | 9872 | default: |
8d64371b | 9873 | if (bc >= buf_p->size () - 1) |
c906108c | 9874 | { |
6d820c5c | 9875 | /* Make some more room in the buffer. */ |
8d64371b TT |
9876 | buf_p->resize (buf_p->size () * 2); |
9877 | buf = buf_p->data (); | |
c906108c SS |
9878 | } |
9879 | ||
6d820c5c DJ |
9880 | buf[bc++] = c; |
9881 | csum += c; | |
9882 | continue; | |
c906108c SS |
9883 | } |
9884 | } | |
9885 | } | |
9886 | ||
ed2b7c17 TT |
9887 | /* Set this to the maximum number of seconds to wait instead of waiting forever |
9888 | in target_wait(). If this timer times out, then it generates an error and | |
9889 | the command is aborted. This replaces most of the need for timeouts in the | |
9890 | GDB test suite, and makes it possible to distinguish between a hung target | |
9891 | and one with slow communications. */ | |
9892 | ||
9893 | static int watchdog = 0; | |
9894 | static void | |
9895 | show_watchdog (struct ui_file *file, int from_tty, | |
9896 | struct cmd_list_element *c, const char *value) | |
9897 | { | |
9898 | fprintf_filtered (file, _("Watchdog timer is %s.\n"), value); | |
9899 | } | |
9900 | ||
c906108c | 9901 | /* Read a packet from the remote machine, with error checking, and |
8d64371b TT |
9902 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9903 | FOREVER, wait forever rather than timing out; this is used (in | |
9904 | synchronous mode) to wait for a target that is is executing user | |
9905 | code to stop. */ | |
d9fcf2fb JM |
9906 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9907 | don't have to change all the calls to getpkt to deal with the | |
9908 | return value, because at the moment I don't know what the right | |
23860348 | 9909 | thing to do it for those. */ |
6b8edb51 | 9910 | |
c906108c | 9911 | void |
8d64371b | 9912 | remote_target::getpkt (gdb::char_vector *buf, int forever) |
d9fcf2fb | 9913 | { |
8d64371b | 9914 | getpkt_sane (buf, forever); |
d9fcf2fb JM |
9915 | } |
9916 | ||
9917 | ||
9918 | /* Read a packet from the remote machine, with error checking, and | |
8d64371b TT |
9919 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9920 | FOREVER, wait forever rather than timing out; this is used (in | |
9921 | synchronous mode) to wait for a target that is is executing user | |
9922 | code to stop. If FOREVER == 0, this function is allowed to time | |
9923 | out gracefully and return an indication of this to the caller. | |
9924 | Otherwise return the number of bytes read. If EXPECTING_NOTIF, | |
9925 | consider receiving a notification enough reason to return to the | |
9926 | caller. *IS_NOTIF is an output boolean that indicates whether *BUF | |
9927 | holds a notification or not (a regular packet). */ | |
74531fed | 9928 | |
6b8edb51 | 9929 | int |
8d64371b | 9930 | remote_target::getpkt_or_notif_sane_1 (gdb::char_vector *buf, |
6b8edb51 PA |
9931 | int forever, int expecting_notif, |
9932 | int *is_notif) | |
c906108c | 9933 | { |
2d717e4f | 9934 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9935 | int c; |
9936 | int tries; | |
9937 | int timeout; | |
df4b58fe | 9938 | int val = -1; |
c906108c | 9939 | |
2d717e4f DJ |
9940 | /* We're reading a new response. Make sure we don't look at a |
9941 | previously cached response. */ | |
9942 | rs->cached_wait_status = 0; | |
9943 | ||
8d64371b | 9944 | strcpy (buf->data (), "timeout"); |
c906108c SS |
9945 | |
9946 | if (forever) | |
74531fed PA |
9947 | timeout = watchdog > 0 ? watchdog : -1; |
9948 | else if (expecting_notif) | |
9949 | timeout = 0; /* There should already be a char in the buffer. If | |
9950 | not, bail out. */ | |
c906108c SS |
9951 | else |
9952 | timeout = remote_timeout; | |
9953 | ||
9954 | #define MAX_TRIES 3 | |
9955 | ||
74531fed PA |
9956 | /* Process any number of notifications, and then return when |
9957 | we get a packet. */ | |
9958 | for (;;) | |
c906108c | 9959 | { |
d9c43928 | 9960 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9961 | times. */ |
9962 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9963 | { |
74531fed PA |
9964 | /* This can loop forever if the remote side sends us |
9965 | characters continuously, but if it pauses, we'll get | |
9966 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9967 | we'll count that as a retry. | |
9968 | ||
9969 | Note that even when forever is set, we will only wait | |
9970 | forever prior to the start of a packet. After that, we | |
9971 | expect characters to arrive at a brisk pace. They should | |
9972 | show up within remote_timeout intervals. */ | |
9973 | do | |
9974 | c = readchar (timeout); | |
9975 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9976 | |
9977 | if (c == SERIAL_TIMEOUT) | |
9978 | { | |
74531fed PA |
9979 | if (expecting_notif) |
9980 | return -1; /* Don't complain, it's normal to not get | |
9981 | anything in this case. */ | |
9982 | ||
23860348 | 9983 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9984 | { |
5b6d1e4f | 9985 | remote_unpush_target (this); |
598d3636 JK |
9986 | throw_error (TARGET_CLOSE_ERROR, |
9987 | _("Watchdog timeout has expired. " | |
9988 | "Target detached.")); | |
c906108c | 9989 | } |
2189c312 SM |
9990 | |
9991 | remote_debug_printf ("Timed out."); | |
c906108c | 9992 | } |
74531fed PA |
9993 | else |
9994 | { | |
9995 | /* We've found the start of a packet or notification. | |
9996 | Now collect the data. */ | |
8d64371b | 9997 | val = read_frame (buf); |
74531fed PA |
9998 | if (val >= 0) |
9999 | break; | |
10000 | } | |
10001 | ||
c33e31fd | 10002 | remote_serial_write ("-", 1); |
c906108c | 10003 | } |
c906108c | 10004 | |
74531fed PA |
10005 | if (tries > MAX_TRIES) |
10006 | { | |
10007 | /* We have tried hard enough, and just can't receive the | |
10008 | packet/notification. Give up. */ | |
10009 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 10010 | |
74531fed PA |
10011 | /* Skip the ack char if we're in no-ack mode. */ |
10012 | if (!rs->noack_mode) | |
c33e31fd | 10013 | remote_serial_write ("+", 1); |
74531fed PA |
10014 | return -1; |
10015 | } | |
c906108c | 10016 | |
74531fed PA |
10017 | /* If we got an ordinary packet, return that to our caller. */ |
10018 | if (c == '$') | |
c906108c SS |
10019 | { |
10020 | if (remote_debug) | |
43e526b9 | 10021 | { |
6cc8564b LM |
10022 | int max_chars; |
10023 | ||
10024 | if (remote_packet_max_chars < 0) | |
10025 | max_chars = val; | |
10026 | else | |
10027 | max_chars = remote_packet_max_chars; | |
10028 | ||
6f8976bf | 10029 | std::string str |
8d64371b | 10030 | = escape_buffer (buf->data (), |
6cc8564b | 10031 | std::min (val, max_chars)); |
6f8976bf | 10032 | |
6cc8564b | 10033 | if (val > max_chars) |
2189c312 SM |
10034 | remote_debug_printf_nofunc |
10035 | ("Packet received: %s [%d bytes omitted]", str.c_str (), | |
10036 | val - max_chars); | |
10037 | else | |
10038 | remote_debug_printf_nofunc ("Packet received: %s", | |
10039 | str.c_str ()); | |
43e526b9 | 10040 | } |
a6f3e723 SL |
10041 | |
10042 | /* Skip the ack char if we're in no-ack mode. */ | |
10043 | if (!rs->noack_mode) | |
c33e31fd | 10044 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
10045 | if (is_notif != NULL) |
10046 | *is_notif = 0; | |
0876f84a | 10047 | return val; |
c906108c SS |
10048 | } |
10049 | ||
74531fed PA |
10050 | /* If we got a notification, handle it, and go back to looking |
10051 | for a packet. */ | |
10052 | else | |
10053 | { | |
10054 | gdb_assert (c == '%'); | |
10055 | ||
2189c312 SM |
10056 | remote_debug_printf_nofunc |
10057 | (" Notification received: %s", | |
10058 | escape_buffer (buf->data (), val).c_str ()); | |
6e5abd65 | 10059 | |
fee9eda9 YQ |
10060 | if (is_notif != NULL) |
10061 | *is_notif = 1; | |
c906108c | 10062 | |
8d64371b | 10063 | handle_notification (rs->notif_state, buf->data ()); |
c906108c | 10064 | |
74531fed | 10065 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 10066 | |
74531fed | 10067 | if (expecting_notif) |
fee9eda9 | 10068 | return val; |
74531fed PA |
10069 | } |
10070 | } | |
10071 | } | |
10072 | ||
6b8edb51 | 10073 | int |
8d64371b | 10074 | remote_target::getpkt_sane (gdb::char_vector *buf, int forever) |
74531fed | 10075 | { |
8d64371b | 10076 | return getpkt_or_notif_sane_1 (buf, forever, 0, NULL); |
74531fed PA |
10077 | } |
10078 | ||
6b8edb51 | 10079 | int |
8d64371b | 10080 | remote_target::getpkt_or_notif_sane (gdb::char_vector *buf, int forever, |
6b8edb51 | 10081 | int *is_notif) |
74531fed | 10082 | { |
8d64371b | 10083 | return getpkt_or_notif_sane_1 (buf, forever, 1, is_notif); |
c906108c | 10084 | } |
74531fed | 10085 | |
28561a65 | 10086 | /* Kill any new fork children of inferior INF that haven't been |
cbb8991c DB |
10087 | processed by follow_fork. */ |
10088 | ||
6b8edb51 | 10089 | void |
28561a65 | 10090 | remote_target::kill_new_fork_children (inferior *inf) |
cbb8991c | 10091 | { |
6b8edb51 | 10092 | remote_state *rs = get_remote_state (); |
cbb8991c | 10093 | struct notif_client *notif = ¬if_client_stop; |
cbb8991c | 10094 | |
28561a65 SM |
10095 | /* Kill the fork child threads of any threads in inferior INF that are stopped |
10096 | at a fork event. */ | |
10097 | for (thread_info *thread : inf->non_exited_threads ()) | |
cbb8991c | 10098 | { |
28561a65 | 10099 | const target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c | 10100 | |
28561a65 SM |
10101 | if (ws == nullptr) |
10102 | continue; | |
cbb8991c | 10103 | |
28561a65 SM |
10104 | int child_pid = ws->child_ptid ().pid (); |
10105 | int res = remote_vkill (child_pid); | |
10106 | ||
10107 | if (res != 0) | |
10108 | error (_("Can't kill fork child process %d"), child_pid); | |
cbb8991c DB |
10109 | } |
10110 | ||
10111 | /* Check for any pending fork events (not reported or processed yet) | |
28561a65 | 10112 | in inferior INF and kill those fork child threads as well. */ |
cbb8991c | 10113 | remote_notif_get_pending_events (notif); |
953edf2b | 10114 | for (auto &event : rs->stop_reply_queue) |
28561a65 SM |
10115 | { |
10116 | if (event->ptid.pid () != inf->pid) | |
10117 | continue; | |
953edf2b | 10118 | |
28561a65 SM |
10119 | if (!is_fork_status (event->ws.kind ())) |
10120 | continue; | |
10121 | ||
10122 | int child_pid = event->ws.child_ptid ().pid (); | |
10123 | int res = remote_vkill (child_pid); | |
10124 | ||
10125 | if (res != 0) | |
10126 | error (_("Can't kill fork child process %d"), child_pid); | |
10127 | } | |
cbb8991c DB |
10128 | } |
10129 | ||
c906108c | 10130 | \f |
8020350c DB |
10131 | /* Target hook to kill the current inferior. */ |
10132 | ||
f6ac5f3d PA |
10133 | void |
10134 | remote_target::kill () | |
43ff13b4 | 10135 | { |
8020350c | 10136 | int res = -1; |
28561a65 | 10137 | inferior *inf = find_inferior_pid (this, inferior_ptid.pid ()); |
8020350c | 10138 | struct remote_state *rs = get_remote_state (); |
0fdf84ca | 10139 | |
28561a65 SM |
10140 | gdb_assert (inf != nullptr); |
10141 | ||
8020350c | 10142 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 10143 | { |
8020350c DB |
10144 | /* If we're stopped while forking and we haven't followed yet, |
10145 | kill the child task. We need to do this before killing the | |
10146 | parent task because if this is a vfork then the parent will | |
10147 | be sleeping. */ | |
28561a65 | 10148 | kill_new_fork_children (inf); |
8020350c | 10149 | |
28561a65 | 10150 | res = remote_vkill (inf->pid); |
8020350c | 10151 | if (res == 0) |
0fdf84ca | 10152 | { |
bc1e6c81 | 10153 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
10154 | return; |
10155 | } | |
8020350c | 10156 | } |
0fdf84ca | 10157 | |
8020350c DB |
10158 | /* If we are in 'target remote' mode and we are killing the only |
10159 | inferior, then we will tell gdbserver to exit and unpush the | |
10160 | target. */ | |
10161 | if (res == -1 && !remote_multi_process_p (rs) | |
5b6d1e4f | 10162 | && number_of_live_inferiors (this) == 1) |
8020350c DB |
10163 | { |
10164 | remote_kill_k (); | |
10165 | ||
10166 | /* We've killed the remote end, we get to mourn it. If we are | |
10167 | not in extended mode, mourning the inferior also unpushes | |
10168 | remote_ops from the target stack, which closes the remote | |
10169 | connection. */ | |
bc1e6c81 | 10170 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
10171 | |
10172 | return; | |
0fdf84ca | 10173 | } |
43ff13b4 | 10174 | |
8020350c | 10175 | error (_("Can't kill process")); |
43ff13b4 JM |
10176 | } |
10177 | ||
8020350c DB |
10178 | /* Send a kill request to the target using the 'vKill' packet. */ |
10179 | ||
6b8edb51 PA |
10180 | int |
10181 | remote_target::remote_vkill (int pid) | |
82f73884 | 10182 | { |
4082afcc | 10183 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
10184 | return -1; |
10185 | ||
6b8edb51 PA |
10186 | remote_state *rs = get_remote_state (); |
10187 | ||
82f73884 | 10188 | /* Tell the remote target to detach. */ |
8d64371b | 10189 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vKill;%x", pid); |
82f73884 | 10190 | putpkt (rs->buf); |
8d64371b | 10191 | getpkt (&rs->buf, 0); |
82f73884 | 10192 | |
4082afcc PA |
10193 | switch (packet_ok (rs->buf, |
10194 | &remote_protocol_packets[PACKET_vKill])) | |
10195 | { | |
10196 | case PACKET_OK: | |
10197 | return 0; | |
10198 | case PACKET_ERROR: | |
10199 | return 1; | |
10200 | case PACKET_UNKNOWN: | |
10201 | return -1; | |
10202 | default: | |
10203 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
10204 | } | |
82f73884 PA |
10205 | } |
10206 | ||
8020350c DB |
10207 | /* Send a kill request to the target using the 'k' packet. */ |
10208 | ||
6b8edb51 PA |
10209 | void |
10210 | remote_target::remote_kill_k () | |
82f73884 | 10211 | { |
8020350c DB |
10212 | /* Catch errors so the user can quit from gdb even when we |
10213 | aren't on speaking terms with the remote system. */ | |
a70b8144 | 10214 | try |
82f73884 | 10215 | { |
82f73884 | 10216 | putpkt ("k"); |
82f73884 | 10217 | } |
230d2906 | 10218 | catch (const gdb_exception_error &ex) |
8020350c DB |
10219 | { |
10220 | if (ex.error == TARGET_CLOSE_ERROR) | |
10221 | { | |
10222 | /* If we got an (EOF) error that caused the target | |
10223 | to go away, then we're done, that's what we wanted. | |
10224 | "k" is susceptible to cause a premature EOF, given | |
10225 | that the remote server isn't actually required to | |
10226 | reply to "k", and it can happen that it doesn't | |
10227 | even get to reply ACK to the "k". */ | |
10228 | return; | |
10229 | } | |
82f73884 | 10230 | |
8020350c DB |
10231 | /* Otherwise, something went wrong. We didn't actually kill |
10232 | the target. Just propagate the exception, and let the | |
10233 | user or higher layers decide what to do. */ | |
eedc3f4f | 10234 | throw; |
8020350c | 10235 | } |
82f73884 PA |
10236 | } |
10237 | ||
f6ac5f3d PA |
10238 | void |
10239 | remote_target::mourn_inferior () | |
c906108c | 10240 | { |
8020350c | 10241 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 10242 | |
9607784a PA |
10243 | /* We're no longer interested in notification events of an inferior |
10244 | that exited or was killed/detached. */ | |
10245 | discard_pending_stop_replies (current_inferior ()); | |
10246 | ||
8020350c | 10247 | /* In 'target remote' mode with one inferior, we close the connection. */ |
5b6d1e4f | 10248 | if (!rs->extended && number_of_live_inferiors (this) <= 1) |
8020350c | 10249 | { |
5b6d1e4f | 10250 | remote_unpush_target (this); |
8020350c DB |
10251 | return; |
10252 | } | |
c906108c | 10253 | |
e24a49d8 PA |
10254 | /* In case we got here due to an error, but we're going to stay |
10255 | connected. */ | |
10256 | rs->waiting_for_stop_reply = 0; | |
10257 | ||
dc1981d7 PA |
10258 | /* If the current general thread belonged to the process we just |
10259 | detached from or has exited, the remote side current general | |
10260 | thread becomes undefined. Considering a case like this: | |
10261 | ||
10262 | - We just got here due to a detach. | |
10263 | - The process that we're detaching from happens to immediately | |
10264 | report a global breakpoint being hit in non-stop mode, in the | |
10265 | same thread we had selected before. | |
10266 | - GDB attaches to this process again. | |
10267 | - This event happens to be the next event we handle. | |
10268 | ||
10269 | GDB would consider that the current general thread didn't need to | |
10270 | be set on the stub side (with Hg), since for all it knew, | |
10271 | GENERAL_THREAD hadn't changed. | |
10272 | ||
10273 | Notice that although in all-stop mode, the remote server always | |
10274 | sets the current thread to the thread reporting the stop event, | |
10275 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
10276 | not* change the current thread when reporting a breakpoint hit, | |
10277 | due to the decoupling of event reporting and event handling. | |
10278 | ||
10279 | To keep things simple, we always invalidate our notion of the | |
10280 | current thread. */ | |
47f8a51d | 10281 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 10282 | |
8020350c | 10283 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 | 10284 | generic_mourn_inferior (); |
2d717e4f | 10285 | } |
c906108c | 10286 | |
57810aa7 | 10287 | bool |
f6ac5f3d | 10288 | extended_remote_target::supports_disable_randomization () |
03583c20 | 10289 | { |
4082afcc | 10290 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
10291 | } |
10292 | ||
6b8edb51 PA |
10293 | void |
10294 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
10295 | { |
10296 | struct remote_state *rs = get_remote_state (); | |
10297 | char *reply; | |
10298 | ||
8d64371b TT |
10299 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
10300 | "QDisableRandomization:%x", val); | |
03583c20 | 10301 | putpkt (rs->buf); |
b6bb3468 | 10302 | reply = remote_get_noisy_reply (); |
03583c20 UW |
10303 | if (*reply == '\0') |
10304 | error (_("Target does not support QDisableRandomization.")); | |
10305 | if (strcmp (reply, "OK") != 0) | |
10306 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
10307 | } | |
10308 | ||
6b8edb51 PA |
10309 | int |
10310 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
10311 | { |
10312 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 10313 | int len; |
94585166 | 10314 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 10315 | |
2d717e4f DJ |
10316 | /* If the user has disabled vRun support, or we have detected that |
10317 | support is not available, do not try it. */ | |
4082afcc | 10318 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 10319 | return -1; |
424163ea | 10320 | |
8d64371b TT |
10321 | strcpy (rs->buf.data (), "vRun;"); |
10322 | len = strlen (rs->buf.data ()); | |
c906108c | 10323 | |
2d717e4f DJ |
10324 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
10325 | error (_("Remote file name too long for run packet")); | |
8d64371b | 10326 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf.data () + len, |
9f1b45b0 | 10327 | strlen (remote_exec_file)); |
2d717e4f | 10328 | |
7c5ded6a | 10329 | if (!args.empty ()) |
2d717e4f | 10330 | { |
2d717e4f | 10331 | int i; |
2d717e4f | 10332 | |
773a1edc | 10333 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
10334 | for (i = 0; argv[i] != NULL; i++) |
10335 | { | |
10336 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
10337 | error (_("Argument list too long for run packet")); | |
10338 | rs->buf[len++] = ';'; | |
8d64371b | 10339 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf.data () + len, |
9f1b45b0 | 10340 | strlen (argv[i])); |
2d717e4f | 10341 | } |
2d717e4f DJ |
10342 | } |
10343 | ||
10344 | rs->buf[len++] = '\0'; | |
10345 | ||
10346 | putpkt (rs->buf); | |
8d64371b | 10347 | getpkt (&rs->buf, 0); |
2d717e4f | 10348 | |
4082afcc | 10349 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 10350 | { |
4082afcc | 10351 | case PACKET_OK: |
3405876a | 10352 | /* We have a wait response. All is well. */ |
2d717e4f | 10353 | return 0; |
4082afcc PA |
10354 | case PACKET_UNKNOWN: |
10355 | return -1; | |
10356 | case PACKET_ERROR: | |
2d717e4f DJ |
10357 | if (remote_exec_file[0] == '\0') |
10358 | error (_("Running the default executable on the remote target failed; " | |
10359 | "try \"set remote exec-file\"?")); | |
10360 | else | |
10361 | error (_("Running \"%s\" on the remote target failed"), | |
10362 | remote_exec_file); | |
4082afcc | 10363 | default: |
557b4d76 | 10364 | gdb_assert_not_reached ("bad switch"); |
2d717e4f | 10365 | } |
c906108c SS |
10366 | } |
10367 | ||
0a2dde4a SDJ |
10368 | /* Helper function to send set/unset environment packets. ACTION is |
10369 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
10370 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
10371 | sent. */ | |
10372 | ||
6b8edb51 PA |
10373 | void |
10374 | remote_target::send_environment_packet (const char *action, | |
10375 | const char *packet, | |
10376 | const char *value) | |
0a2dde4a | 10377 | { |
6b8edb51 PA |
10378 | remote_state *rs = get_remote_state (); |
10379 | ||
0a2dde4a SDJ |
10380 | /* Convert the environment variable to an hex string, which |
10381 | is the best format to be transmitted over the wire. */ | |
10382 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
10383 | strlen (value)); | |
10384 | ||
8d64371b | 10385 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
0a2dde4a SDJ |
10386 | "%s:%s", packet, encoded_value.c_str ()); |
10387 | ||
10388 | putpkt (rs->buf); | |
8d64371b TT |
10389 | getpkt (&rs->buf, 0); |
10390 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10391 | warning (_("Unable to %s environment variable '%s' on remote."), |
10392 | action, value); | |
10393 | } | |
10394 | ||
10395 | /* Helper function to handle the QEnvironment* packets. */ | |
10396 | ||
6b8edb51 PA |
10397 | void |
10398 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 10399 | { |
6b8edb51 PA |
10400 | remote_state *rs = get_remote_state (); |
10401 | ||
0a2dde4a SDJ |
10402 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
10403 | { | |
10404 | putpkt ("QEnvironmentReset"); | |
8d64371b TT |
10405 | getpkt (&rs->buf, 0); |
10406 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10407 | warning (_("Unable to reset environment on remote.")); |
10408 | } | |
10409 | ||
10410 | gdb_environ *e = ¤t_inferior ()->environment; | |
10411 | ||
10412 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
10413 | for (const std::string &el : e->user_set_env ()) | |
6b8edb51 | 10414 | send_environment_packet ("set", "QEnvironmentHexEncoded", |
0a2dde4a SDJ |
10415 | el.c_str ()); |
10416 | ||
10417 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
10418 | for (const std::string &el : e->user_unset_env ()) | |
6b8edb51 | 10419 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
10420 | } |
10421 | ||
bc3b087d SDJ |
10422 | /* Helper function to set the current working directory for the |
10423 | inferior in the remote target. */ | |
10424 | ||
6b8edb51 PA |
10425 | void |
10426 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d SDJ |
10427 | { |
10428 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
10429 | { | |
11bd012e | 10430 | const std::string &inferior_cwd = current_inferior ()->cwd (); |
6b8edb51 | 10431 | remote_state *rs = get_remote_state (); |
bc3b087d | 10432 | |
11bd012e | 10433 | if (!inferior_cwd.empty ()) |
bc3b087d | 10434 | { |
11bd012e SM |
10435 | std::string hexpath |
10436 | = bin2hex ((const gdb_byte *) inferior_cwd.data (), | |
10437 | inferior_cwd.size ()); | |
bc3b087d | 10438 | |
8d64371b | 10439 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10440 | "QSetWorkingDir:%s", hexpath.c_str ()); |
10441 | } | |
10442 | else | |
10443 | { | |
10444 | /* An empty inferior_cwd means that the user wants us to | |
10445 | reset the remote server's inferior's cwd. */ | |
8d64371b | 10446 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10447 | "QSetWorkingDir:"); |
10448 | } | |
10449 | ||
10450 | putpkt (rs->buf); | |
8d64371b | 10451 | getpkt (&rs->buf, 0); |
bc3b087d SDJ |
10452 | if (packet_ok (rs->buf, |
10453 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
10454 | != PACKET_OK) | |
10455 | error (_("\ | |
10456 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10457 | directory: %s"), | |
8d64371b | 10458 | rs->buf.data ()); |
bc3b087d SDJ |
10459 | |
10460 | } | |
10461 | } | |
10462 | ||
2d717e4f DJ |
10463 | /* In the extended protocol we want to be able to do things like |
10464 | "run" and have them basically work as expected. So we need | |
10465 | a special create_inferior function. We support changing the | |
10466 | executable file and the command line arguments, but not the | |
10467 | environment. */ | |
10468 | ||
f6ac5f3d PA |
10469 | void |
10470 | extended_remote_target::create_inferior (const char *exec_file, | |
10471 | const std::string &args, | |
10472 | char **env, int from_tty) | |
43ff13b4 | 10473 | { |
3405876a PA |
10474 | int run_worked; |
10475 | char *stop_reply; | |
10476 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10477 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10478 | |
43ff13b4 | 10479 | /* If running asynchronously, register the target file descriptor |
23860348 | 10480 | with the event loop. */ |
75c99385 | 10481 | if (target_can_async_p ()) |
6a3753b3 | 10482 | target_async (1); |
43ff13b4 | 10483 | |
03583c20 | 10484 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10485 | if (supports_disable_randomization ()) |
03583c20 UW |
10486 | extended_remote_disable_randomization (disable_randomization); |
10487 | ||
aefd8b33 SDJ |
10488 | /* If startup-with-shell is on, we inform gdbserver to start the |
10489 | remote inferior using a shell. */ | |
10490 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
10491 | { | |
8d64371b | 10492 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
aefd8b33 SDJ |
10493 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); |
10494 | putpkt (rs->buf); | |
8d64371b TT |
10495 | getpkt (&rs->buf, 0); |
10496 | if (strcmp (rs->buf.data (), "OK") != 0) | |
aefd8b33 SDJ |
10497 | error (_("\ |
10498 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
8d64371b | 10499 | rs->buf.data ()); |
aefd8b33 SDJ |
10500 | } |
10501 | ||
6b8edb51 | 10502 | extended_remote_environment_support (); |
0a2dde4a | 10503 | |
6b8edb51 | 10504 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10505 | |
43ff13b4 | 10506 | /* Now restart the remote server. */ |
3405876a PA |
10507 | run_worked = extended_remote_run (args) != -1; |
10508 | if (!run_worked) | |
2d717e4f DJ |
10509 | { |
10510 | /* vRun was not supported. Fail if we need it to do what the | |
10511 | user requested. */ | |
10512 | if (remote_exec_file[0]) | |
10513 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10514 | if (!args.empty ()) |
65e65158 | 10515 | error (_("Remote target does not support \"set args\" or run ARGS")); |
43ff13b4 | 10516 | |
2d717e4f DJ |
10517 | /* Fall back to "R". */ |
10518 | extended_remote_restart (); | |
10519 | } | |
424163ea | 10520 | |
3405876a | 10521 | /* vRun's success return is a stop reply. */ |
8d64371b | 10522 | stop_reply = run_worked ? rs->buf.data () : NULL; |
3405876a | 10523 | add_current_inferior_and_thread (stop_reply); |
c0a2216e | 10524 | |
2d717e4f DJ |
10525 | /* Get updated offsets, if the stub uses qOffsets. */ |
10526 | get_offsets (); | |
2d717e4f | 10527 | } |
c906108c | 10528 | \f |
c5aa993b | 10529 | |
b775012e LM |
10530 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10531 | the list of conditions (in agent expression bytecode format), if any, the | |
10532 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10533 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10534 | |
10535 | static int | |
10536 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10537 | struct bp_target_info *bp_tgt, char *buf, |
10538 | char *buf_end) | |
b775012e | 10539 | { |
3cde5c42 | 10540 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10541 | return 0; |
10542 | ||
10543 | buf += strlen (buf); | |
bba74b36 | 10544 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10545 | buf++; |
10546 | ||
83621223 | 10547 | /* Send conditions to the target. */ |
d538e36d | 10548 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10549 | { |
bba74b36 | 10550 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10551 | buf += strlen (buf); |
3cde5c42 | 10552 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10553 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10554 | *buf = '\0'; | |
10555 | } | |
b775012e LM |
10556 | return 0; |
10557 | } | |
10558 | ||
d3ce09f5 SS |
10559 | static void |
10560 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10561 | struct bp_target_info *bp_tgt, char *buf) | |
10562 | { | |
3cde5c42 | 10563 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10564 | return; |
10565 | ||
10566 | buf += strlen (buf); | |
10567 | ||
10568 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10569 | buf += strlen (buf); | |
10570 | ||
10571 | /* Concatenate all the agent expressions that are commands into the | |
10572 | cmds parameter. */ | |
df97be55 | 10573 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10574 | { |
10575 | sprintf (buf, "X%x,", aexpr->len); | |
10576 | buf += strlen (buf); | |
3cde5c42 | 10577 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10578 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10579 | *buf = '\0'; | |
10580 | } | |
d3ce09f5 SS |
10581 | } |
10582 | ||
8181d85f DJ |
10583 | /* Insert a breakpoint. On targets that have software breakpoint |
10584 | support, we ask the remote target to do the work; on targets | |
10585 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10586 | |
f6ac5f3d PA |
10587 | int |
10588 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10589 | struct bp_target_info *bp_tgt) | |
c906108c | 10590 | { |
d471ea57 AC |
10591 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10592 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10593 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10594 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10595 | |
4082afcc | 10596 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10597 | { |
0d5ed153 | 10598 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10599 | struct remote_state *rs; |
bba74b36 | 10600 | char *p, *endbuf; |
4fff2411 | 10601 | |
28439a30 PA |
10602 | /* Make sure the remote is pointing at the right process, if |
10603 | necessary. */ | |
10604 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10605 | set_general_process (); | |
10606 | ||
4fff2411 | 10607 | rs = get_remote_state (); |
8d64371b TT |
10608 | p = rs->buf.data (); |
10609 | endbuf = p + get_remote_packet_size (); | |
802188a7 | 10610 | |
96baa820 JM |
10611 | *(p++) = 'Z'; |
10612 | *(p++) = '0'; | |
10613 | *(p++) = ','; | |
7c0f6dcc | 10614 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10615 | p += hexnumstr (p, addr); |
579c6ad9 | 10616 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10617 | |
f6ac5f3d | 10618 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10619 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10620 | |
f6ac5f3d | 10621 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10622 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10623 | ||
6d820c5c | 10624 | putpkt (rs->buf); |
8d64371b | 10625 | getpkt (&rs->buf, 0); |
96baa820 | 10626 | |
6d820c5c | 10627 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10628 | { |
d471ea57 AC |
10629 | case PACKET_ERROR: |
10630 | return -1; | |
10631 | case PACKET_OK: | |
10632 | return 0; | |
10633 | case PACKET_UNKNOWN: | |
10634 | break; | |
96baa820 JM |
10635 | } |
10636 | } | |
c906108c | 10637 | |
0000e5cc PA |
10638 | /* If this breakpoint has target-side commands but this stub doesn't |
10639 | support Z0 packets, throw error. */ | |
3cde5c42 | 10640 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10641 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10642 | Target doesn't support breakpoints that have target side commands.")); | |
10643 | ||
f6ac5f3d | 10644 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10645 | } |
10646 | ||
f6ac5f3d PA |
10647 | int |
10648 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10649 | struct bp_target_info *bp_tgt, | |
10650 | enum remove_bp_reason reason) | |
c906108c | 10651 | { |
8181d85f | 10652 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10653 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10654 | |
4082afcc | 10655 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10656 | { |
8d64371b TT |
10657 | char *p = rs->buf.data (); |
10658 | char *endbuf = p + get_remote_packet_size (); | |
802188a7 | 10659 | |
28439a30 PA |
10660 | /* Make sure the remote is pointing at the right process, if |
10661 | necessary. */ | |
10662 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10663 | set_general_process (); | |
10664 | ||
96baa820 JM |
10665 | *(p++) = 'z'; |
10666 | *(p++) = '0'; | |
10667 | *(p++) = ','; | |
10668 | ||
8181d85f DJ |
10669 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10670 | p += hexnumstr (p, addr); | |
579c6ad9 | 10671 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10672 | |
6d820c5c | 10673 | putpkt (rs->buf); |
8d64371b | 10674 | getpkt (&rs->buf, 0); |
96baa820 | 10675 | |
6d820c5c | 10676 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10677 | } |
10678 | ||
f6ac5f3d | 10679 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10680 | } |
10681 | ||
f486487f | 10682 | static enum Z_packet_type |
d471ea57 AC |
10683 | watchpoint_to_Z_packet (int type) |
10684 | { | |
10685 | switch (type) | |
10686 | { | |
10687 | case hw_write: | |
bb858e6a | 10688 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10689 | break; |
10690 | case hw_read: | |
bb858e6a | 10691 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10692 | break; |
10693 | case hw_access: | |
bb858e6a | 10694 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10695 | break; |
10696 | default: | |
8e65ff28 | 10697 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10698 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10699 | } |
10700 | } | |
10701 | ||
f6ac5f3d PA |
10702 | int |
10703 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10704 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10705 | { |
d01949b6 | 10706 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10707 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10708 | char *p; |
d471ea57 | 10709 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10710 | |
4082afcc | 10711 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10712 | return 1; |
802188a7 | 10713 | |
28439a30 PA |
10714 | /* Make sure the remote is pointing at the right process, if |
10715 | necessary. */ | |
10716 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10717 | set_general_process (); | |
10718 | ||
8d64371b TT |
10719 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "Z%x,", packet); |
10720 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10721 | addr = remote_address_masked (addr); |
10722 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10723 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10724 | |
6d820c5c | 10725 | putpkt (rs->buf); |
8d64371b | 10726 | getpkt (&rs->buf, 0); |
96baa820 | 10727 | |
6d820c5c | 10728 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10729 | { |
10730 | case PACKET_ERROR: | |
d471ea57 | 10731 | return -1; |
85d721b8 PA |
10732 | case PACKET_UNKNOWN: |
10733 | return 1; | |
d471ea57 AC |
10734 | case PACKET_OK: |
10735 | return 0; | |
10736 | } | |
8e65ff28 | 10737 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10738 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10739 | } |
10740 | ||
57810aa7 | 10741 | bool |
f6ac5f3d PA |
10742 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10743 | CORE_ADDR start, int length) | |
283002cf MR |
10744 | { |
10745 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10746 | ||
10747 | return diff < length; | |
10748 | } | |
10749 | ||
d471ea57 | 10750 | |
f6ac5f3d PA |
10751 | int |
10752 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10753 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10754 | { |
d01949b6 | 10755 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10756 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10757 | char *p; |
d471ea57 AC |
10758 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10759 | ||
4082afcc | 10760 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10761 | return -1; |
802188a7 | 10762 | |
28439a30 PA |
10763 | /* Make sure the remote is pointing at the right process, if |
10764 | necessary. */ | |
10765 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10766 | set_general_process (); | |
10767 | ||
8d64371b TT |
10768 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "z%x,", packet); |
10769 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10770 | addr = remote_address_masked (addr); |
10771 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10772 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c | 10773 | putpkt (rs->buf); |
8d64371b | 10774 | getpkt (&rs->buf, 0); |
96baa820 | 10775 | |
6d820c5c | 10776 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10777 | { |
10778 | case PACKET_ERROR: | |
10779 | case PACKET_UNKNOWN: | |
10780 | return -1; | |
10781 | case PACKET_OK: | |
10782 | return 0; | |
10783 | } | |
8e65ff28 | 10784 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10785 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10786 | } |
10787 | ||
3c3bea1c | 10788 | |
60fcc1c3 TT |
10789 | static int remote_hw_watchpoint_limit = -1; |
10790 | static int remote_hw_watchpoint_length_limit = -1; | |
10791 | static int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 10792 | |
f6ac5f3d PA |
10793 | int |
10794 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10795 | { |
10796 | if (remote_hw_watchpoint_length_limit == 0) | |
10797 | return 0; | |
10798 | else if (remote_hw_watchpoint_length_limit < 0) | |
10799 | return 1; | |
10800 | else if (len <= remote_hw_watchpoint_length_limit) | |
10801 | return 1; | |
10802 | else | |
10803 | return 0; | |
10804 | } | |
10805 | ||
f6ac5f3d PA |
10806 | int |
10807 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10808 | { |
3c3bea1c GS |
10809 | if (type == bp_hardware_breakpoint) |
10810 | { | |
10811 | if (remote_hw_breakpoint_limit == 0) | |
10812 | return 0; | |
501eef12 AC |
10813 | else if (remote_hw_breakpoint_limit < 0) |
10814 | return 1; | |
3c3bea1c GS |
10815 | else if (cnt <= remote_hw_breakpoint_limit) |
10816 | return 1; | |
10817 | } | |
10818 | else | |
10819 | { | |
10820 | if (remote_hw_watchpoint_limit == 0) | |
10821 | return 0; | |
501eef12 AC |
10822 | else if (remote_hw_watchpoint_limit < 0) |
10823 | return 1; | |
3c3bea1c GS |
10824 | else if (ot) |
10825 | return -1; | |
10826 | else if (cnt <= remote_hw_watchpoint_limit) | |
10827 | return 1; | |
10828 | } | |
10829 | return -1; | |
10830 | } | |
10831 | ||
f7e6eed5 PA |
10832 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10833 | ||
57810aa7 | 10834 | bool |
f6ac5f3d | 10835 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10836 | { |
799a2abe | 10837 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10838 | |
799a2abe | 10839 | return (thread->priv != NULL |
7aabaf9d SM |
10840 | && (get_remote_thread_info (thread)->stop_reason |
10841 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10842 | } |
10843 | ||
10844 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10845 | remote. */ | |
10846 | ||
57810aa7 | 10847 | bool |
f6ac5f3d | 10848 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10849 | { |
f7e6eed5 PA |
10850 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10851 | } | |
10852 | ||
10853 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10854 | ||
57810aa7 | 10855 | bool |
f6ac5f3d | 10856 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10857 | { |
799a2abe | 10858 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10859 | |
799a2abe | 10860 | return (thread->priv != NULL |
7aabaf9d SM |
10861 | && (get_remote_thread_info (thread)->stop_reason |
10862 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10863 | } |
10864 | ||
10865 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10866 | remote. */ | |
10867 | ||
57810aa7 | 10868 | bool |
f6ac5f3d | 10869 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10870 | { |
f7e6eed5 PA |
10871 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10872 | } | |
10873 | ||
57810aa7 | 10874 | bool |
f6ac5f3d | 10875 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10876 | { |
799a2abe | 10877 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10878 | |
799a2abe | 10879 | return (thread->priv != NULL |
7aabaf9d SM |
10880 | && (get_remote_thread_info (thread)->stop_reason |
10881 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10882 | } |
10883 | ||
57810aa7 | 10884 | bool |
f6ac5f3d | 10885 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10886 | { |
799a2abe | 10887 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10888 | |
799a2abe | 10889 | if (thread->priv != NULL |
7aabaf9d SM |
10890 | && (get_remote_thread_info (thread)->stop_reason |
10891 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10892 | { |
7aabaf9d | 10893 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10894 | return true; |
4aa7a7f5 JJ |
10895 | } |
10896 | ||
57810aa7 | 10897 | return false; |
3c3bea1c GS |
10898 | } |
10899 | ||
10900 | ||
f6ac5f3d PA |
10901 | int |
10902 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10903 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10904 | { |
0d5ed153 | 10905 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10906 | struct remote_state *rs; |
bba74b36 | 10907 | char *p, *endbuf; |
dd61ec5c | 10908 | char *message; |
3c3bea1c | 10909 | |
4082afcc | 10910 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10911 | return -1; |
2bc416ba | 10912 | |
28439a30 PA |
10913 | /* Make sure the remote is pointing at the right process, if |
10914 | necessary. */ | |
10915 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10916 | set_general_process (); | |
10917 | ||
4fff2411 | 10918 | rs = get_remote_state (); |
8d64371b TT |
10919 | p = rs->buf.data (); |
10920 | endbuf = p + get_remote_packet_size (); | |
4fff2411 | 10921 | |
96baa820 JM |
10922 | *(p++) = 'Z'; |
10923 | *(p++) = '1'; | |
10924 | *(p++) = ','; | |
802188a7 | 10925 | |
0d5ed153 | 10926 | addr = remote_address_masked (addr); |
96baa820 | 10927 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10928 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10929 | |
f6ac5f3d | 10930 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10931 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10932 | |
f6ac5f3d | 10933 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10934 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10935 | ||
6d820c5c | 10936 | putpkt (rs->buf); |
8d64371b | 10937 | getpkt (&rs->buf, 0); |
96baa820 | 10938 | |
6d820c5c | 10939 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10940 | { |
10941 | case PACKET_ERROR: | |
dd61ec5c | 10942 | if (rs->buf[1] == '.') |
dda83cd7 SM |
10943 | { |
10944 | message = strchr (&rs->buf[2], '.'); | |
10945 | if (message) | |
10946 | error (_("Remote failure reply: %s"), message + 1); | |
10947 | } | |
dd61ec5c | 10948 | return -1; |
d471ea57 AC |
10949 | case PACKET_UNKNOWN: |
10950 | return -1; | |
10951 | case PACKET_OK: | |
10952 | return 0; | |
10953 | } | |
8e65ff28 | 10954 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10955 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10956 | } |
10957 | ||
d471ea57 | 10958 | |
f6ac5f3d PA |
10959 | int |
10960 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10961 | struct bp_target_info *bp_tgt) | |
96baa820 | 10962 | { |
8181d85f | 10963 | CORE_ADDR addr; |
d01949b6 | 10964 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
10965 | char *p = rs->buf.data (); |
10966 | char *endbuf = p + get_remote_packet_size (); | |
c8189ed1 | 10967 | |
4082afcc | 10968 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10969 | return -1; |
802188a7 | 10970 | |
28439a30 PA |
10971 | /* Make sure the remote is pointing at the right process, if |
10972 | necessary. */ | |
10973 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10974 | set_general_process (); | |
10975 | ||
96baa820 JM |
10976 | *(p++) = 'z'; |
10977 | *(p++) = '1'; | |
10978 | *(p++) = ','; | |
802188a7 | 10979 | |
8181d85f | 10980 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10981 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10982 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10983 | |
6d820c5c | 10984 | putpkt (rs->buf); |
8d64371b | 10985 | getpkt (&rs->buf, 0); |
802188a7 | 10986 | |
6d820c5c | 10987 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10988 | { |
10989 | case PACKET_ERROR: | |
10990 | case PACKET_UNKNOWN: | |
10991 | return -1; | |
10992 | case PACKET_OK: | |
10993 | return 0; | |
10994 | } | |
8e65ff28 | 10995 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10996 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10997 | } |
96baa820 | 10998 | |
4a5e7a5b PA |
10999 | /* Verify memory using the "qCRC:" request. */ |
11000 | ||
f6ac5f3d PA |
11001 | int |
11002 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
11003 | { |
11004 | struct remote_state *rs = get_remote_state (); | |
11005 | unsigned long host_crc, target_crc; | |
11006 | char *tmp; | |
11007 | ||
936d2992 PA |
11008 | /* It doesn't make sense to use qCRC if the remote target is |
11009 | connected but not running. */ | |
55f6301a TT |
11010 | if (target_has_execution () |
11011 | && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
936d2992 PA |
11012 | { |
11013 | enum packet_result result; | |
28439a30 | 11014 | |
936d2992 PA |
11015 | /* Make sure the remote is pointing at the right process. */ |
11016 | set_general_process (); | |
4a5e7a5b | 11017 | |
936d2992 | 11018 | /* FIXME: assumes lma can fit into long. */ |
8d64371b | 11019 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qCRC:%lx,%lx", |
936d2992 PA |
11020 | (long) lma, (long) size); |
11021 | putpkt (rs->buf); | |
4a5e7a5b | 11022 | |
936d2992 PA |
11023 | /* Be clever; compute the host_crc before waiting for target |
11024 | reply. */ | |
11025 | host_crc = xcrc32 (data, size, 0xffffffff); | |
11026 | ||
8d64371b | 11027 | getpkt (&rs->buf, 0); |
4a5e7a5b | 11028 | |
936d2992 PA |
11029 | result = packet_ok (rs->buf, |
11030 | &remote_protocol_packets[PACKET_qCRC]); | |
11031 | if (result == PACKET_ERROR) | |
11032 | return -1; | |
11033 | else if (result == PACKET_OK) | |
11034 | { | |
11035 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
11036 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 11037 | |
936d2992 PA |
11038 | return (host_crc == target_crc); |
11039 | } | |
11040 | } | |
4a5e7a5b | 11041 | |
f6ac5f3d | 11042 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
11043 | } |
11044 | ||
c906108c SS |
11045 | /* compare-sections command |
11046 | ||
11047 | With no arguments, compares each loadable section in the exec bfd | |
11048 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 11049 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 11050 | |
c906108c | 11051 | static void |
ac88e2de | 11052 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
11053 | { |
11054 | asection *s; | |
ce359b09 | 11055 | const char *sectname; |
c906108c SS |
11056 | bfd_size_type size; |
11057 | bfd_vma lma; | |
11058 | int matched = 0; | |
11059 | int mismatched = 0; | |
4a5e7a5b | 11060 | int res; |
95cf3b38 | 11061 | int read_only = 0; |
c906108c | 11062 | |
7e10abd1 | 11063 | if (!current_program_space->exec_bfd ()) |
8a3fe4f8 | 11064 | error (_("command cannot be used without an exec file")); |
c906108c | 11065 | |
95cf3b38 DT |
11066 | if (args != NULL && strcmp (args, "-r") == 0) |
11067 | { | |
11068 | read_only = 1; | |
11069 | args = NULL; | |
11070 | } | |
11071 | ||
7e10abd1 | 11072 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
c906108c SS |
11073 | { |
11074 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 11075 | continue; /* Skip non-loadable section. */ |
c906108c | 11076 | |
95cf3b38 DT |
11077 | if (read_only && (s->flags & SEC_READONLY) == 0) |
11078 | continue; /* Skip writeable sections */ | |
11079 | ||
fd361982 | 11080 | size = bfd_section_size (s); |
c906108c | 11081 | if (size == 0) |
0df8b418 | 11082 | continue; /* Skip zero-length section. */ |
c906108c | 11083 | |
fd361982 | 11084 | sectname = bfd_section_name (s); |
c906108c | 11085 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 11086 | continue; /* Not the section selected by user. */ |
c906108c | 11087 | |
0df8b418 | 11088 | matched = 1; /* Do this section. */ |
c906108c | 11089 | lma = s->lma; |
c906108c | 11090 | |
b80406ac | 11091 | gdb::byte_vector sectdata (size); |
7e10abd1 TT |
11092 | bfd_get_section_contents (current_program_space->exec_bfd (), s, |
11093 | sectdata.data (), 0, size); | |
c906108c | 11094 | |
b80406ac | 11095 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
11096 | |
11097 | if (res == -1) | |
5af949e3 | 11098 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
11099 | paddress (target_gdbarch (), lma), |
11100 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 11101 | |
5af949e3 | 11102 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
11103 | paddress (target_gdbarch (), lma), |
11104 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 11105 | if (res) |
c906108c SS |
11106 | printf_filtered ("matched.\n"); |
11107 | else | |
c5aa993b JM |
11108 | { |
11109 | printf_filtered ("MIS-MATCHED!\n"); | |
11110 | mismatched++; | |
11111 | } | |
c906108c SS |
11112 | } |
11113 | if (mismatched > 0) | |
936d2992 | 11114 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 11115 | the loaded file\n")); |
c906108c | 11116 | if (args && !matched) |
a3f17187 | 11117 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
11118 | } |
11119 | ||
0e7f50da UW |
11120 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
11121 | into remote target. The number of bytes written to the remote | |
11122 | target is returned, or -1 for error. */ | |
11123 | ||
6b8edb51 PA |
11124 | target_xfer_status |
11125 | remote_target::remote_write_qxfer (const char *object_name, | |
11126 | const char *annex, const gdb_byte *writebuf, | |
11127 | ULONGEST offset, LONGEST len, | |
11128 | ULONGEST *xfered_len, | |
11129 | struct packet_config *packet) | |
0e7f50da UW |
11130 | { |
11131 | int i, buf_len; | |
11132 | ULONGEST n; | |
0e7f50da UW |
11133 | struct remote_state *rs = get_remote_state (); |
11134 | int max_size = get_memory_write_packet_size (); | |
11135 | ||
7cc244de | 11136 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 11137 | return TARGET_XFER_E_IO; |
0e7f50da UW |
11138 | |
11139 | /* Insert header. */ | |
8d64371b | 11140 | i = snprintf (rs->buf.data (), max_size, |
0e7f50da UW |
11141 | "qXfer:%s:write:%s:%s:", |
11142 | object_name, annex ? annex : "", | |
11143 | phex_nz (offset, sizeof offset)); | |
11144 | max_size -= (i + 1); | |
11145 | ||
11146 | /* Escape as much data as fits into rs->buf. */ | |
11147 | buf_len = remote_escape_output | |
8d64371b | 11148 | (writebuf, len, 1, (gdb_byte *) rs->buf.data () + i, &max_size, max_size); |
0e7f50da | 11149 | |
8d64371b TT |
11150 | if (putpkt_binary (rs->buf.data (), i + buf_len) < 0 |
11151 | || getpkt_sane (&rs->buf, 0) < 0 | |
0e7f50da | 11152 | || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 11153 | return TARGET_XFER_E_IO; |
0e7f50da | 11154 | |
8d64371b | 11155 | unpack_varlen_hex (rs->buf.data (), &n); |
9b409511 YQ |
11156 | |
11157 | *xfered_len = n; | |
92ffd475 | 11158 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
11159 | } |
11160 | ||
0876f84a DJ |
11161 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
11162 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
11163 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
11164 | The number of bytes read may be less than LEN without indicating an | |
11165 | EOF. PACKET is checked and updated to indicate whether the remote | |
11166 | target supports this object. */ | |
11167 | ||
6b8edb51 PA |
11168 | target_xfer_status |
11169 | remote_target::remote_read_qxfer (const char *object_name, | |
11170 | const char *annex, | |
11171 | gdb_byte *readbuf, ULONGEST offset, | |
11172 | LONGEST len, | |
11173 | ULONGEST *xfered_len, | |
11174 | struct packet_config *packet) | |
0876f84a | 11175 | { |
0876f84a | 11176 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
11177 | LONGEST i, n, packet_len; |
11178 | ||
7cc244de | 11179 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 11180 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11181 | |
11182 | /* Check whether we've cached an end-of-object packet that matches | |
11183 | this request. */ | |
8e88304f | 11184 | if (rs->finished_object) |
0876f84a | 11185 | { |
8e88304f TT |
11186 | if (strcmp (object_name, rs->finished_object) == 0 |
11187 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
11188 | && offset == rs->finished_offset) | |
9b409511 YQ |
11189 | return TARGET_XFER_EOF; |
11190 | ||
0876f84a DJ |
11191 | |
11192 | /* Otherwise, we're now reading something different. Discard | |
11193 | the cache. */ | |
8e88304f TT |
11194 | xfree (rs->finished_object); |
11195 | xfree (rs->finished_annex); | |
11196 | rs->finished_object = NULL; | |
11197 | rs->finished_annex = NULL; | |
0876f84a DJ |
11198 | } |
11199 | ||
11200 | /* Request only enough to fit in a single packet. The actual data | |
11201 | may not, since we don't know how much of it will need to be escaped; | |
11202 | the target is free to respond with slightly less data. We subtract | |
11203 | five to account for the response type and the protocol frame. */ | |
768adc05 | 11204 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
8d64371b TT |
11205 | snprintf (rs->buf.data (), get_remote_packet_size () - 4, |
11206 | "qXfer:%s:read:%s:%s,%s", | |
0876f84a DJ |
11207 | object_name, annex ? annex : "", |
11208 | phex_nz (offset, sizeof offset), | |
11209 | phex_nz (n, sizeof n)); | |
11210 | i = putpkt (rs->buf); | |
11211 | if (i < 0) | |
2ed4b548 | 11212 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11213 | |
11214 | rs->buf[0] = '\0'; | |
8d64371b | 11215 | packet_len = getpkt_sane (&rs->buf, 0); |
0876f84a | 11216 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 11217 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11218 | |
11219 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8d64371b | 11220 | error (_("Unknown remote qXfer reply: %s"), rs->buf.data ()); |
0876f84a DJ |
11221 | |
11222 | /* 'm' means there is (or at least might be) more data after this | |
11223 | batch. That does not make sense unless there's at least one byte | |
11224 | of data in this reply. */ | |
11225 | if (rs->buf[0] == 'm' && packet_len == 1) | |
11226 | error (_("Remote qXfer reply contained no data.")); | |
11227 | ||
11228 | /* Got some data. */ | |
8d64371b | 11229 | i = remote_unescape_input ((gdb_byte *) rs->buf.data () + 1, |
bc20a4af | 11230 | packet_len - 1, readbuf, n); |
0876f84a DJ |
11231 | |
11232 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
11233 | or possibly empty. If we have the final block of a non-empty |
11234 | object, record this fact to bypass a subsequent partial read. */ | |
11235 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 11236 | { |
8e88304f TT |
11237 | rs->finished_object = xstrdup (object_name); |
11238 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
11239 | rs->finished_offset = offset + i; | |
0876f84a DJ |
11240 | } |
11241 | ||
9b409511 YQ |
11242 | if (i == 0) |
11243 | return TARGET_XFER_EOF; | |
11244 | else | |
11245 | { | |
11246 | *xfered_len = i; | |
11247 | return TARGET_XFER_OK; | |
11248 | } | |
0876f84a DJ |
11249 | } |
11250 | ||
f6ac5f3d PA |
11251 | enum target_xfer_status |
11252 | remote_target::xfer_partial (enum target_object object, | |
11253 | const char *annex, gdb_byte *readbuf, | |
11254 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
11255 | ULONGEST *xfered_len) | |
c906108c | 11256 | { |
82f73884 | 11257 | struct remote_state *rs; |
c906108c | 11258 | int i; |
6d820c5c | 11259 | char *p2; |
1e3ff5ad | 11260 | char query_type; |
124e13d9 | 11261 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 11262 | |
e6e4e701 | 11263 | set_remote_traceframe (); |
82f73884 PA |
11264 | set_general_thread (inferior_ptid); |
11265 | ||
11266 | rs = get_remote_state (); | |
11267 | ||
b2182ed2 | 11268 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
11269 | if (object == TARGET_OBJECT_MEMORY) |
11270 | { | |
2d717e4f DJ |
11271 | /* If the remote target is connected but not running, we should |
11272 | pass this request down to a lower stratum (e.g. the executable | |
11273 | file). */ | |
55f6301a | 11274 | if (!target_has_execution ()) |
9b409511 | 11275 | return TARGET_XFER_EOF; |
2d717e4f | 11276 | |
21e3b9b9 | 11277 | if (writebuf != NULL) |
124e13d9 SM |
11278 | return remote_write_bytes (offset, writebuf, len, unit_size, |
11279 | xfered_len); | |
21e3b9b9 | 11280 | else |
6b8edb51 | 11281 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 11282 | xfered_len); |
21e3b9b9 DJ |
11283 | } |
11284 | ||
4aa995e1 PA |
11285 | /* Handle extra signal info using qxfer packets. */ |
11286 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
11287 | { | |
11288 | if (readbuf) | |
f6ac5f3d | 11289 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 11290 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
11291 | [PACKET_qXfer_siginfo_read]); |
11292 | else | |
f6ac5f3d | 11293 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 11294 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
11295 | &remote_protocol_packets |
11296 | [PACKET_qXfer_siginfo_write]); | |
11297 | } | |
11298 | ||
0fb4aa4b PA |
11299 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
11300 | { | |
11301 | if (readbuf) | |
f6ac5f3d | 11302 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 11303 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
11304 | &remote_protocol_packets |
11305 | [PACKET_qXfer_statictrace_read]); | |
11306 | else | |
2ed4b548 | 11307 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
11308 | } |
11309 | ||
a76d924d DJ |
11310 | /* Only handle flash writes. */ |
11311 | if (writebuf != NULL) | |
11312 | { | |
a76d924d DJ |
11313 | switch (object) |
11314 | { | |
11315 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 11316 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 11317 | writebuf); |
a76d924d DJ |
11318 | |
11319 | default: | |
2ed4b548 | 11320 | return TARGET_XFER_E_IO; |
a76d924d DJ |
11321 | } |
11322 | } | |
4b8a223f | 11323 | |
1e3ff5ad AC |
11324 | /* Map pre-existing objects onto letters. DO NOT do this for new |
11325 | objects!!! Instead specify new query packets. */ | |
11326 | switch (object) | |
c906108c | 11327 | { |
1e3ff5ad AC |
11328 | case TARGET_OBJECT_AVR: |
11329 | query_type = 'R'; | |
11330 | break; | |
802188a7 RM |
11331 | |
11332 | case TARGET_OBJECT_AUXV: | |
0876f84a | 11333 | gdb_assert (annex == NULL); |
f6ac5f3d | 11334 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 11335 | xfered_len, |
0876f84a | 11336 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 11337 | |
23181151 DJ |
11338 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
11339 | return remote_read_qxfer | |
f6ac5f3d | 11340 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
11341 | &remote_protocol_packets[PACKET_qXfer_features]); |
11342 | ||
cfa9d6d9 DJ |
11343 | case TARGET_OBJECT_LIBRARIES: |
11344 | return remote_read_qxfer | |
f6ac5f3d | 11345 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
11346 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
11347 | ||
2268b414 JK |
11348 | case TARGET_OBJECT_LIBRARIES_SVR4: |
11349 | return remote_read_qxfer | |
f6ac5f3d | 11350 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
11351 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
11352 | ||
fd79ecee DJ |
11353 | case TARGET_OBJECT_MEMORY_MAP: |
11354 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11355 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 11356 | xfered_len, |
fd79ecee DJ |
11357 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
11358 | ||
07e059b5 VP |
11359 | case TARGET_OBJECT_OSDATA: |
11360 | /* Should only get here if we're connected. */ | |
5d93a237 | 11361 | gdb_assert (rs->remote_desc); |
07e059b5 | 11362 | return remote_read_qxfer |
f6ac5f3d | 11363 | ("osdata", annex, readbuf, offset, len, xfered_len, |
dda83cd7 | 11364 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
07e059b5 | 11365 | |
dc146f7c VP |
11366 | case TARGET_OBJECT_THREADS: |
11367 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11368 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 11369 | xfered_len, |
dc146f7c VP |
11370 | &remote_protocol_packets[PACKET_qXfer_threads]); |
11371 | ||
b3b9301e PA |
11372 | case TARGET_OBJECT_TRACEFRAME_INFO: |
11373 | gdb_assert (annex == NULL); | |
11374 | return remote_read_qxfer | |
f6ac5f3d | 11375 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 11376 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
11377 | |
11378 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 11379 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 11380 | xfered_len, |
78d85199 | 11381 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
11382 | |
11383 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 11384 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 11385 | xfered_len, |
169081d0 TG |
11386 | &remote_protocol_packets[PACKET_qXfer_uib]); |
11387 | ||
9accd112 | 11388 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 11389 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 11390 | xfered_len, |
dda83cd7 | 11391 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9accd112 | 11392 | |
f4abbc16 | 11393 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 11394 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
11395 | len, xfered_len, |
11396 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
11397 | ||
c78fa86a | 11398 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 11399 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
11400 | len, xfered_len, |
11401 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
11402 | ||
1e3ff5ad | 11403 | default: |
2ed4b548 | 11404 | return TARGET_XFER_E_IO; |
c906108c SS |
11405 | } |
11406 | ||
0df8b418 | 11407 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 11408 | large enough let the caller deal with it. */ |
ea9c271d | 11409 | if (len < get_remote_packet_size ()) |
2ed4b548 | 11410 | return TARGET_XFER_E_IO; |
ea9c271d | 11411 | len = get_remote_packet_size (); |
1e3ff5ad | 11412 | |
23860348 | 11413 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 11414 | if (!rs->remote_desc) |
8a3fe4f8 | 11415 | error (_("remote query is only available after target open")); |
c906108c | 11416 | |
1e3ff5ad | 11417 | gdb_assert (annex != NULL); |
4b8a223f | 11418 | gdb_assert (readbuf != NULL); |
c906108c | 11419 | |
8d64371b | 11420 | p2 = rs->buf.data (); |
c906108c SS |
11421 | *p2++ = 'q'; |
11422 | *p2++ = query_type; | |
11423 | ||
23860348 MS |
11424 | /* We used one buffer char for the remote protocol q command and |
11425 | another for the query type. As the remote protocol encapsulation | |
11426 | uses 4 chars plus one extra in case we are debugging | |
11427 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
11428 | string. */ | |
c906108c | 11429 | i = 0; |
ea9c271d | 11430 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11431 | { |
1e3ff5ad AC |
11432 | /* Bad caller may have sent forbidden characters. */ |
11433 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11434 | *p2++ = annex[i]; | |
c906108c SS |
11435 | i++; |
11436 | } | |
1e3ff5ad AC |
11437 | *p2 = '\0'; |
11438 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11439 | |
6d820c5c | 11440 | i = putpkt (rs->buf); |
c5aa993b | 11441 | if (i < 0) |
2ed4b548 | 11442 | return TARGET_XFER_E_IO; |
c906108c | 11443 | |
8d64371b TT |
11444 | getpkt (&rs->buf, 0); |
11445 | strcpy ((char *) readbuf, rs->buf.data ()); | |
c906108c | 11446 | |
9b409511 | 11447 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11448 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11449 | } |
11450 | ||
09c98b44 DB |
11451 | /* Implementation of to_get_memory_xfer_limit. */ |
11452 | ||
f6ac5f3d PA |
11453 | ULONGEST |
11454 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11455 | { |
11456 | return get_memory_write_packet_size (); | |
11457 | } | |
11458 | ||
f6ac5f3d PA |
11459 | int |
11460 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11461 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11462 | CORE_ADDR *found_addrp) | |
08388c79 | 11463 | { |
f5656ead | 11464 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
11465 | struct remote_state *rs = get_remote_state (); |
11466 | int max_size = get_memory_write_packet_size (); | |
11467 | struct packet_config *packet = | |
11468 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
11469 | /* Number of packet bytes used to encode the pattern; |
11470 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11471 | int escaped_pattern_len; |
0df8b418 | 11472 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11473 | int used_pattern_len; |
11474 | int i; | |
11475 | int found; | |
11476 | ULONGEST found_addr; | |
11477 | ||
4a72de73 TT |
11478 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
11479 | { | |
11480 | return (target_read (this, TARGET_OBJECT_MEMORY, NULL, result, addr, len) | |
11481 | == len); | |
11482 | }; | |
11483 | ||
7cc244de PA |
11484 | /* Don't go to the target if we don't have to. This is done before |
11485 | checking packet_config_support to avoid the possibility that a | |
11486 | success for this edge case means the facility works in | |
11487 | general. */ | |
08388c79 DE |
11488 | if (pattern_len > search_space_len) |
11489 | return 0; | |
11490 | if (pattern_len == 0) | |
11491 | { | |
11492 | *found_addrp = start_addr; | |
11493 | return 1; | |
11494 | } | |
11495 | ||
11496 | /* If we already know the packet isn't supported, fall back to the simple | |
11497 | way of searching memory. */ | |
11498 | ||
4082afcc | 11499 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
11500 | { |
11501 | /* Target doesn't provided special support, fall back and use the | |
11502 | standard support (copy memory and do the search here). */ | |
4a72de73 | 11503 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11504 | pattern, pattern_len, found_addrp); |
11505 | } | |
11506 | ||
28439a30 PA |
11507 | /* Make sure the remote is pointing at the right process. */ |
11508 | set_general_process (); | |
11509 | ||
08388c79 | 11510 | /* Insert header. */ |
8d64371b | 11511 | i = snprintf (rs->buf.data (), max_size, |
08388c79 | 11512 | "qSearch:memory:%s;%s;", |
5af949e3 | 11513 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11514 | phex_nz (search_space_len, sizeof (search_space_len))); |
11515 | max_size -= (i + 1); | |
11516 | ||
11517 | /* Escape as much data as fits into rs->buf. */ | |
11518 | escaped_pattern_len = | |
8d64371b TT |
11519 | remote_escape_output (pattern, pattern_len, 1, |
11520 | (gdb_byte *) rs->buf.data () + i, | |
08388c79 DE |
11521 | &used_pattern_len, max_size); |
11522 | ||
11523 | /* Bail if the pattern is too large. */ | |
11524 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11525 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 | 11526 | |
8d64371b TT |
11527 | if (putpkt_binary (rs->buf.data (), i + escaped_pattern_len) < 0 |
11528 | || getpkt_sane (&rs->buf, 0) < 0 | |
08388c79 DE |
11529 | || packet_ok (rs->buf, packet) != PACKET_OK) |
11530 | { | |
11531 | /* The request may not have worked because the command is not | |
11532 | supported. If so, fall back to the simple way. */ | |
7cc244de | 11533 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 11534 | { |
4a72de73 | 11535 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11536 | pattern, pattern_len, found_addrp); |
11537 | } | |
11538 | return -1; | |
11539 | } | |
11540 | ||
11541 | if (rs->buf[0] == '0') | |
11542 | found = 0; | |
11543 | else if (rs->buf[0] == '1') | |
11544 | { | |
11545 | found = 1; | |
11546 | if (rs->buf[1] != ',') | |
8d64371b TT |
11547 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
11548 | unpack_varlen_hex (&rs->buf[2], &found_addr); | |
08388c79 DE |
11549 | *found_addrp = found_addr; |
11550 | } | |
11551 | else | |
8d64371b | 11552 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
08388c79 DE |
11553 | |
11554 | return found; | |
11555 | } | |
11556 | ||
f6ac5f3d PA |
11557 | void |
11558 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11559 | { |
d01949b6 | 11560 | struct remote_state *rs = get_remote_state (); |
8d64371b | 11561 | char *p = rs->buf.data (); |
96baa820 | 11562 | |
5d93a237 | 11563 | if (!rs->remote_desc) |
8a3fe4f8 | 11564 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11565 | |
23860348 | 11566 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11567 | if (command == NULL) |
11568 | command = ""; | |
11569 | ||
23860348 | 11570 | /* The query prefix. */ |
8d64371b TT |
11571 | strcpy (rs->buf.data (), "qRcmd,"); |
11572 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 | 11573 | |
8d64371b | 11574 | if ((strlen (rs->buf.data ()) + strlen (command) * 2 + 8/*misc*/) |
3e43a32a | 11575 | > get_remote_packet_size ()) |
8a3fe4f8 | 11576 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11577 | |
23860348 | 11578 | /* Encode the actual command. */ |
a30bf1f1 | 11579 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11580 | |
6d820c5c | 11581 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11582 | error (_("Communication problem with target.")); |
96baa820 JM |
11583 | |
11584 | /* get/display the response */ | |
11585 | while (1) | |
11586 | { | |
2e9f7625 DJ |
11587 | char *buf; |
11588 | ||
00bf0b85 | 11589 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11590 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11591 | rs->buf[0] = '\0'; |
8d64371b | 11592 | if (getpkt_sane (&rs->buf, 0) == -1) |
dda83cd7 SM |
11593 | { |
11594 | /* Timeout. Continue to (try to) read responses. | |
11595 | This is better than stopping with an error, assuming the stub | |
11596 | is still executing the (long) monitor command. | |
11597 | If needed, the user can interrupt gdb using C-c, obtaining | |
11598 | an effect similar to stop on timeout. */ | |
11599 | continue; | |
11600 | } | |
8d64371b | 11601 | buf = rs->buf.data (); |
96baa820 | 11602 | if (buf[0] == '\0') |
8a3fe4f8 | 11603 | error (_("Target does not support this command.")); |
96baa820 JM |
11604 | if (buf[0] == 'O' && buf[1] != 'K') |
11605 | { | |
23860348 | 11606 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11607 | continue; |
11608 | } | |
11609 | if (strcmp (buf, "OK") == 0) | |
11610 | break; | |
7be570e7 JM |
11611 | if (strlen (buf) == 3 && buf[0] == 'E' |
11612 | && isdigit (buf[1]) && isdigit (buf[2])) | |
11613 | { | |
8a3fe4f8 | 11614 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11615 | } |
96baa820 JM |
11616 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11617 | { | |
11618 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11619 | |
96baa820 JM |
11620 | fputc_unfiltered (c, outbuf); |
11621 | } | |
11622 | break; | |
11623 | } | |
11624 | } | |
11625 | ||
f6ac5f3d PA |
11626 | std::vector<mem_region> |
11627 | remote_target::memory_map () | |
fd79ecee | 11628 | { |
a664f67e | 11629 | std::vector<mem_region> result; |
9018be22 | 11630 | gdb::optional<gdb::char_vector> text |
328d42d8 SM |
11631 | = target_read_stralloc (current_inferior ()->top_target (), |
11632 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
fd79ecee DJ |
11633 | |
11634 | if (text) | |
9018be22 | 11635 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11636 | |
11637 | return result; | |
11638 | } | |
11639 | ||
e5b176f2 AB |
11640 | /* Set of callbacks used to implement the 'maint packet' command. */ |
11641 | ||
11642 | struct cli_packet_command_callbacks : public send_remote_packet_callbacks | |
c906108c | 11643 | { |
e5b176f2 AB |
11644 | /* Called before the packet is sent. BUF is the packet content before |
11645 | the protocol specific prefix, suffix, and escaping is added. */ | |
c906108c | 11646 | |
e5b176f2 AB |
11647 | void sending (gdb::array_view<const char> &buf) override |
11648 | { | |
11649 | puts_filtered ("sending: "); | |
11650 | print_packet (buf); | |
11651 | puts_filtered ("\n"); | |
11652 | } | |
c906108c | 11653 | |
e5b176f2 AB |
11654 | /* Called with BUF, the reply from the remote target. */ |
11655 | ||
11656 | void received (gdb::array_view<const char> &buf) override | |
11657 | { | |
11658 | puts_filtered ("received: \""); | |
11659 | print_packet (buf); | |
11660 | puts_filtered ("\"\n"); | |
11661 | } | |
11662 | ||
11663 | private: | |
11664 | ||
11665 | /* Print BUF o gdb_stdout. Any non-printable bytes in BUF are printed as | |
11666 | '\x??' with '??' replaced by the hexadecimal value of the byte. */ | |
11667 | ||
11668 | static void | |
11669 | print_packet (gdb::array_view<const char> &buf) | |
11670 | { | |
11671 | string_file stb; | |
11672 | ||
11673 | for (int i = 0; i < buf.size (); ++i) | |
11674 | { | |
11675 | gdb_byte c = buf[i]; | |
11676 | if (isprint (c)) | |
11677 | fputc_unfiltered (c, &stb); | |
11678 | else | |
11679 | fprintf_unfiltered (&stb, "\\x%02x", (unsigned char) c); | |
11680 | } | |
11681 | ||
11682 | puts_filtered (stb.string ().c_str ()); | |
11683 | } | |
11684 | }; | |
11685 | ||
11686 | /* See remote.h. */ | |
6b8edb51 PA |
11687 | |
11688 | void | |
e5b176f2 AB |
11689 | send_remote_packet (gdb::array_view<const char> &buf, |
11690 | send_remote_packet_callbacks *callbacks) | |
6b8edb51 | 11691 | { |
e5b176f2 AB |
11692 | if (buf.size () == 0 || buf.data ()[0] == '\0') |
11693 | error (_("a remote packet must not be empty")); | |
c906108c | 11694 | |
e5b176f2 AB |
11695 | remote_target *remote = get_current_remote_target (); |
11696 | if (remote == nullptr) | |
11697 | error (_("packets can only be sent to a remote target")); | |
c906108c | 11698 | |
e5b176f2 | 11699 | callbacks->sending (buf); |
6b8edb51 | 11700 | |
e5b176f2 AB |
11701 | remote->putpkt_binary (buf.data (), buf.size ()); |
11702 | remote_state *rs = remote->get_remote_state (); | |
11703 | int bytes = remote->getpkt_sane (&rs->buf, 0); | |
11704 | ||
11705 | if (bytes < 0) | |
11706 | error (_("error while fetching packet from remote target")); | |
11707 | ||
11708 | gdb::array_view<const char> view (&rs->buf[0], bytes); | |
11709 | callbacks->received (view); | |
11710 | } | |
11711 | ||
11712 | /* Entry point for the 'maint packet' command. */ | |
11713 | ||
11714 | static void | |
11715 | cli_packet_command (const char *args, int from_tty) | |
11716 | { | |
11717 | cli_packet_command_callbacks cb; | |
11718 | gdb::array_view<const char> view | |
11719 | = gdb::make_array_view (args, args == nullptr ? 0 : strlen (args)); | |
11720 | send_remote_packet (view, &cb); | |
c906108c SS |
11721 | } |
11722 | ||
11723 | #if 0 | |
23860348 | 11724 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11725 | |
a14ed312 | 11726 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11727 | |
a14ed312 | 11728 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11729 | |
a14ed312 | 11730 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11731 | |
a14ed312 | 11732 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11733 | |
23860348 | 11734 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11735 | |
a14ed312 | 11736 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11737 | |
23860348 | 11738 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11739 | |
a14ed312 | 11740 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11741 | |
a14ed312 | 11742 | static void init_remote_threadtests (void); |
c906108c | 11743 | |
23860348 | 11744 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11745 | |
11746 | static void | |
0b39b52e | 11747 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11748 | { |
11749 | int sample_thread = SAMPLE_THREAD; | |
11750 | ||
a3f17187 | 11751 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 11752 | set_general_thread (sample_thread); |
c906108c SS |
11753 | } |
11754 | ||
11755 | ||
11756 | static void | |
0b39b52e | 11757 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11758 | { |
11759 | int sample_thread = SAMPLE_THREAD; | |
e99b03dc | 11760 | int pid = inferior_ptid.pid (); |
fd79271b | 11761 | ptid_t ptid = ptid_t (pid, sample_thread, 0); |
c906108c | 11762 | |
79d7f229 | 11763 | if (remote_thread_alive (ptid)) |
c906108c SS |
11764 | printf_filtered ("PASS: Thread alive test\n"); |
11765 | else | |
11766 | printf_filtered ("FAIL: Thread alive test\n"); | |
11767 | } | |
11768 | ||
23860348 | 11769 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11770 | |
11771 | void | |
fba45db2 | 11772 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11773 | { |
11774 | char hexid[20]; | |
11775 | ||
405feb71 | 11776 | pack_threadid (&hexid[0], ref); /* Convert thread id into hex. */ |
c906108c SS |
11777 | hexid[16] = 0; |
11778 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
11779 | } | |
11780 | ||
11781 | static void | |
0b39b52e | 11782 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11783 | { |
11784 | int startflag = 1; | |
11785 | threadref nextthread; | |
11786 | int done, result_count; | |
11787 | threadref threadlist[3]; | |
11788 | ||
11789 | printf_filtered ("Remote Threadlist test\n"); | |
11790 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
11791 | &result_count, &threadlist[0])) | |
11792 | printf_filtered ("FAIL: threadlist test\n"); | |
11793 | else | |
11794 | { | |
11795 | threadref *scan = threadlist; | |
11796 | threadref *limit = scan + result_count; | |
11797 | ||
11798 | while (scan < limit) | |
11799 | output_threadid (" thread ", scan++); | |
11800 | } | |
11801 | } | |
11802 | ||
11803 | void | |
fba45db2 | 11804 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11805 | { |
11806 | output_threadid ("Threadid: ", &info->threadid); | |
11807 | printf_filtered ("Name: %s\n ", info->shortname); | |
11808 | printf_filtered ("State: %s\n", info->display); | |
11809 | printf_filtered ("other: %s\n\n", info->more_display); | |
11810 | } | |
11811 | ||
11812 | int | |
fba45db2 | 11813 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11814 | { |
11815 | int result; | |
11816 | int set; | |
11817 | struct gdb_ext_thread_info threadinfo; | |
11818 | ||
11819 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11820 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11821 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11822 | display_thread_info (&threadinfo); | |
11823 | return result; | |
11824 | } | |
11825 | ||
11826 | static void | |
0b39b52e | 11827 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11828 | { |
11829 | int athread = SAMPLE_THREAD; | |
11830 | threadref thread; | |
11831 | int set; | |
11832 | ||
11833 | int_to_threadref (&thread, athread); | |
11834 | printf_filtered ("Remote Threadinfo test\n"); | |
11835 | if (!get_and_display_threadinfo (&thread)) | |
11836 | printf_filtered ("FAIL cannot get thread info\n"); | |
11837 | } | |
11838 | ||
11839 | static int | |
fba45db2 | 11840 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11841 | { |
11842 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11843 | return get_and_display_threadinfo (ref); | |
11844 | } | |
11845 | ||
11846 | static void | |
0b39b52e | 11847 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
11848 | { |
11849 | printf_filtered ("Remote Threadlist update test\n"); | |
11850 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11851 | } | |
11852 | ||
11853 | static void | |
11854 | init_remote_threadtests (void) | |
11855 | { | |
3e43a32a MS |
11856 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11857 | _("Fetch and print the remote list of " | |
590042fc | 11858 | "thread identifiers, one pkt only.")); |
c906108c | 11859 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
590042fc | 11860 | _("Fetch and display info about one thread.")); |
c906108c | 11861 | add_com ("tset", class_obscure, threadset_test_cmd, |
590042fc | 11862 | _("Test setting to a different thread.")); |
c906108c | 11863 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
590042fc | 11864 | _("Iterate through updating all remote thread info.")); |
c906108c | 11865 | add_com ("talive", class_obscure, threadalive_test, |
590042fc | 11866 | _("Remote thread alive test.")); |
c906108c SS |
11867 | } |
11868 | ||
11869 | #endif /* 0 */ | |
11870 | ||
a068643d | 11871 | /* Convert a thread ID to a string. */ |
f3fb8c85 | 11872 | |
a068643d | 11873 | std::string |
f6ac5f3d | 11874 | remote_target::pid_to_str (ptid_t ptid) |
f3fb8c85 | 11875 | { |
82f73884 | 11876 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11877 | |
d7e15655 | 11878 | if (ptid == null_ptid) |
7cee1e54 | 11879 | return normal_pid_to_str (ptid); |
0e998d96 | 11880 | else if (ptid.is_pid ()) |
ecd0ada5 PA |
11881 | { |
11882 | /* Printing an inferior target id. */ | |
11883 | ||
11884 | /* When multi-process extensions are off, there's no way in the | |
11885 | remote protocol to know the remote process id, if there's any | |
11886 | at all. There's one exception --- when we're connected with | |
11887 | target extended-remote, and we manually attached to a process | |
11888 | with "attach PID". We don't record anywhere a flag that | |
11889 | allows us to distinguish that case from the case of | |
11890 | connecting with extended-remote and the stub already being | |
11891 | attached to a process, and reporting yes to qAttached, hence | |
11892 | no smart special casing here. */ | |
11893 | if (!remote_multi_process_p (rs)) | |
a068643d | 11894 | return "Remote target"; |
ecd0ada5 PA |
11895 | |
11896 | return normal_pid_to_str (ptid); | |
82f73884 | 11897 | } |
ecd0ada5 | 11898 | else |
79d7f229 | 11899 | { |
d7e15655 | 11900 | if (magic_null_ptid == ptid) |
a068643d | 11901 | return "Thread <main>"; |
8020350c | 11902 | else if (remote_multi_process_p (rs)) |
e38504b3 | 11903 | if (ptid.lwp () == 0) |
de0d863e DB |
11904 | return normal_pid_to_str (ptid); |
11905 | else | |
a068643d TT |
11906 | return string_printf ("Thread %d.%ld", |
11907 | ptid.pid (), ptid.lwp ()); | |
ecd0ada5 | 11908 | else |
a068643d | 11909 | return string_printf ("Thread %ld", ptid.lwp ()); |
79d7f229 | 11910 | } |
f3fb8c85 MS |
11911 | } |
11912 | ||
38691318 KB |
11913 | /* Get the address of the thread local variable in OBJFILE which is |
11914 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11915 | ||
f6ac5f3d PA |
11916 | CORE_ADDR |
11917 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11918 | CORE_ADDR offset) | |
38691318 | 11919 | { |
4082afcc | 11920 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11921 | { |
11922 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11923 | char *p = rs->buf.data (); |
11924 | char *endp = p + get_remote_packet_size (); | |
571dd617 | 11925 | enum packet_result result; |
38691318 KB |
11926 | |
11927 | strcpy (p, "qGetTLSAddr:"); | |
11928 | p += strlen (p); | |
82f73884 | 11929 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11930 | *p++ = ','; |
11931 | p += hexnumstr (p, offset); | |
11932 | *p++ = ','; | |
11933 | p += hexnumstr (p, lm); | |
11934 | *p++ = '\0'; | |
11935 | ||
6d820c5c | 11936 | putpkt (rs->buf); |
8d64371b | 11937 | getpkt (&rs->buf, 0); |
3e43a32a MS |
11938 | result = packet_ok (rs->buf, |
11939 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11940 | if (result == PACKET_OK) |
38691318 | 11941 | { |
b926417a | 11942 | ULONGEST addr; |
38691318 | 11943 | |
8d64371b | 11944 | unpack_varlen_hex (rs->buf.data (), &addr); |
b926417a | 11945 | return addr; |
38691318 | 11946 | } |
571dd617 | 11947 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11948 | throw_error (TLS_GENERIC_ERROR, |
11949 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11950 | else |
109c3e39 AC |
11951 | throw_error (TLS_GENERIC_ERROR, |
11952 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11953 | } |
11954 | else | |
109c3e39 AC |
11955 | throw_error (TLS_GENERIC_ERROR, |
11956 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11957 | /* Not reached. */ |
11958 | return 0; | |
11959 | } | |
11960 | ||
711e434b PM |
11961 | /* Provide thread local base, i.e. Thread Information Block address. |
11962 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11963 | ||
57810aa7 | 11964 | bool |
f6ac5f3d | 11965 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11966 | { |
4082afcc | 11967 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11968 | { |
11969 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11970 | char *p = rs->buf.data (); |
11971 | char *endp = p + get_remote_packet_size (); | |
711e434b PM |
11972 | enum packet_result result; |
11973 | ||
11974 | strcpy (p, "qGetTIBAddr:"); | |
11975 | p += strlen (p); | |
11976 | p = write_ptid (p, endp, ptid); | |
11977 | *p++ = '\0'; | |
11978 | ||
11979 | putpkt (rs->buf); | |
8d64371b | 11980 | getpkt (&rs->buf, 0); |
711e434b PM |
11981 | result = packet_ok (rs->buf, |
11982 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11983 | if (result == PACKET_OK) | |
11984 | { | |
b926417a | 11985 | ULONGEST val; |
8d64371b | 11986 | unpack_varlen_hex (rs->buf.data (), &val); |
711e434b | 11987 | if (addr) |
b926417a | 11988 | *addr = (CORE_ADDR) val; |
57810aa7 | 11989 | return true; |
711e434b PM |
11990 | } |
11991 | else if (result == PACKET_UNKNOWN) | |
11992 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11993 | else | |
11994 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11995 | } | |
11996 | else | |
11997 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11998 | /* Not reached. */ | |
57810aa7 | 11999 | return false; |
711e434b PM |
12000 | } |
12001 | ||
29709017 DJ |
12002 | /* Support for inferring a target description based on the current |
12003 | architecture and the size of a 'g' packet. While the 'g' packet | |
12004 | can have any size (since optional registers can be left off the | |
12005 | end), some sizes are easily recognizable given knowledge of the | |
12006 | approximate architecture. */ | |
12007 | ||
12008 | struct remote_g_packet_guess | |
12009 | { | |
eefce37f TT |
12010 | remote_g_packet_guess (int bytes_, const struct target_desc *tdesc_) |
12011 | : bytes (bytes_), | |
12012 | tdesc (tdesc_) | |
12013 | { | |
12014 | } | |
12015 | ||
29709017 DJ |
12016 | int bytes; |
12017 | const struct target_desc *tdesc; | |
12018 | }; | |
29709017 | 12019 | |
eefce37f | 12020 | struct remote_g_packet_data : public allocate_on_obstack |
29709017 | 12021 | { |
eefce37f | 12022 | std::vector<remote_g_packet_guess> guesses; |
29709017 DJ |
12023 | }; |
12024 | ||
12025 | static struct gdbarch_data *remote_g_packet_data_handle; | |
12026 | ||
12027 | static void * | |
12028 | remote_g_packet_data_init (struct obstack *obstack) | |
12029 | { | |
eefce37f | 12030 | return new (obstack) remote_g_packet_data; |
29709017 DJ |
12031 | } |
12032 | ||
12033 | void | |
12034 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
12035 | const struct target_desc *tdesc) | |
12036 | { | |
12037 | struct remote_g_packet_data *data | |
19ba03f4 SM |
12038 | = ((struct remote_g_packet_data *) |
12039 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
12040 | |
12041 | gdb_assert (tdesc != NULL); | |
12042 | ||
eefce37f TT |
12043 | for (const remote_g_packet_guess &guess : data->guesses) |
12044 | if (guess.bytes == bytes) | |
29709017 | 12045 | internal_error (__FILE__, __LINE__, |
9b20d036 | 12046 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
12047 | bytes); |
12048 | ||
eefce37f | 12049 | data->guesses.emplace_back (bytes, tdesc); |
29709017 DJ |
12050 | } |
12051 | ||
eefce37f TT |
12052 | /* Return true if remote_read_description would do anything on this target |
12053 | and architecture, false otherwise. */ | |
d962ef82 | 12054 | |
eefce37f | 12055 | static bool |
d962ef82 DJ |
12056 | remote_read_description_p (struct target_ops *target) |
12057 | { | |
12058 | struct remote_g_packet_data *data | |
19ba03f4 SM |
12059 | = ((struct remote_g_packet_data *) |
12060 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 | 12061 | |
eefce37f | 12062 | return !data->guesses.empty (); |
d962ef82 DJ |
12063 | } |
12064 | ||
f6ac5f3d PA |
12065 | const struct target_desc * |
12066 | remote_target::read_description () | |
29709017 DJ |
12067 | { |
12068 | struct remote_g_packet_data *data | |
19ba03f4 SM |
12069 | = ((struct remote_g_packet_data *) |
12070 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 12071 | |
d962ef82 DJ |
12072 | /* Do not try this during initial connection, when we do not know |
12073 | whether there is a running but stopped thread. */ | |
55f6301a | 12074 | if (!target_has_execution () || inferior_ptid == null_ptid) |
b6a8c27b | 12075 | return beneath ()->read_description (); |
d962ef82 | 12076 | |
eefce37f | 12077 | if (!data->guesses.empty ()) |
29709017 | 12078 | { |
29709017 DJ |
12079 | int bytes = send_g_packet (); |
12080 | ||
eefce37f TT |
12081 | for (const remote_g_packet_guess &guess : data->guesses) |
12082 | if (guess.bytes == bytes) | |
12083 | return guess.tdesc; | |
29709017 DJ |
12084 | |
12085 | /* We discard the g packet. A minor optimization would be to | |
12086 | hold on to it, and fill the register cache once we have selected | |
12087 | an architecture, but it's too tricky to do safely. */ | |
12088 | } | |
12089 | ||
b6a8c27b | 12090 | return beneath ()->read_description (); |
29709017 DJ |
12091 | } |
12092 | ||
a6b151f1 DJ |
12093 | /* Remote file transfer support. This is host-initiated I/O, not |
12094 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
12095 | ||
12096 | /* If *LEFT is at least the length of STRING, copy STRING to | |
12097 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12098 | decrease *LEFT. Otherwise raise an error. */ | |
12099 | ||
12100 | static void | |
a121b7c1 | 12101 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
12102 | { |
12103 | int len = strlen (string); | |
12104 | ||
12105 | if (len > *left) | |
12106 | error (_("Packet too long for target.")); | |
12107 | ||
12108 | memcpy (*buffer, string, len); | |
12109 | *buffer += len; | |
12110 | *left -= len; | |
12111 | ||
12112 | /* NUL-terminate the buffer as a convenience, if there is | |
12113 | room. */ | |
12114 | if (*left) | |
12115 | **buffer = '\0'; | |
12116 | } | |
12117 | ||
12118 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
12119 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12120 | decrease *LEFT. Otherwise raise an error. */ | |
12121 | ||
12122 | static void | |
12123 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
12124 | int len) | |
12125 | { | |
12126 | if (2 * len > *left) | |
12127 | error (_("Packet too long for target.")); | |
12128 | ||
12129 | bin2hex (bytes, *buffer, len); | |
12130 | *buffer += 2 * len; | |
12131 | *left -= 2 * len; | |
12132 | ||
12133 | /* NUL-terminate the buffer as a convenience, if there is | |
12134 | room. */ | |
12135 | if (*left) | |
12136 | **buffer = '\0'; | |
12137 | } | |
12138 | ||
12139 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
12140 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12141 | decrease *LEFT. Otherwise raise an error. */ | |
12142 | ||
12143 | static void | |
12144 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
12145 | { | |
12146 | int len = hexnumlen (value); | |
12147 | ||
12148 | if (len > *left) | |
12149 | error (_("Packet too long for target.")); | |
12150 | ||
12151 | hexnumstr (*buffer, value); | |
12152 | *buffer += len; | |
12153 | *left -= len; | |
12154 | ||
12155 | /* NUL-terminate the buffer as a convenience, if there is | |
12156 | room. */ | |
12157 | if (*left) | |
12158 | **buffer = '\0'; | |
12159 | } | |
12160 | ||
12161 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
12162 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
12163 | was included, and *ATTACHMENT to point to the start of the annex | |
12164 | if any. The length of the packet isn't needed here; there may | |
12165 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
12166 | ||
12167 | Return 0 if the packet could be parsed, -1 if it could not. If | |
12168 | -1 is returned, the other variables may not be initialized. */ | |
12169 | ||
12170 | static int | |
aa2838cc SM |
12171 | remote_hostio_parse_result (const char *buffer, int *retcode, |
12172 | int *remote_errno, const char **attachment) | |
a6b151f1 DJ |
12173 | { |
12174 | char *p, *p2; | |
12175 | ||
12176 | *remote_errno = 0; | |
12177 | *attachment = NULL; | |
12178 | ||
12179 | if (buffer[0] != 'F') | |
12180 | return -1; | |
12181 | ||
12182 | errno = 0; | |
12183 | *retcode = strtol (&buffer[1], &p, 16); | |
12184 | if (errno != 0 || p == &buffer[1]) | |
12185 | return -1; | |
12186 | ||
12187 | /* Check for ",errno". */ | |
12188 | if (*p == ',') | |
12189 | { | |
12190 | errno = 0; | |
12191 | *remote_errno = strtol (p + 1, &p2, 16); | |
12192 | if (errno != 0 || p + 1 == p2) | |
12193 | return -1; | |
12194 | p = p2; | |
12195 | } | |
12196 | ||
12197 | /* Check for ";attachment". If there is no attachment, the | |
12198 | packet should end here. */ | |
12199 | if (*p == ';') | |
12200 | { | |
12201 | *attachment = p + 1; | |
12202 | return 0; | |
12203 | } | |
12204 | else if (*p == '\0') | |
12205 | return 0; | |
12206 | else | |
12207 | return -1; | |
12208 | } | |
12209 | ||
12210 | /* Send a prepared I/O packet to the target and read its response. | |
12211 | The prepared packet is in the global RS->BUF before this function | |
12212 | is called, and the answer is there when we return. | |
12213 | ||
12214 | COMMAND_BYTES is the length of the request to send, which may include | |
12215 | binary data. WHICH_PACKET is the packet configuration to check | |
12216 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
12217 | is set to the error number and -1 is returned. Otherwise the value | |
12218 | returned by the function is returned. | |
12219 | ||
12220 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
12221 | attachment is expected; an error will be reported if there's a | |
12222 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
12223 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
12224 | attachment's length. */ | |
12225 | ||
6b8edb51 PA |
12226 | int |
12227 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
aa2838cc | 12228 | int *remote_errno, const char **attachment, |
6b8edb51 | 12229 | int *attachment_len) |
a6b151f1 DJ |
12230 | { |
12231 | struct remote_state *rs = get_remote_state (); | |
12232 | int ret, bytes_read; | |
aa2838cc | 12233 | const char *attachment_tmp; |
a6b151f1 | 12234 | |
20db9c52 | 12235 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
12236 | { |
12237 | *remote_errno = FILEIO_ENOSYS; | |
12238 | return -1; | |
12239 | } | |
12240 | ||
8d64371b TT |
12241 | putpkt_binary (rs->buf.data (), command_bytes); |
12242 | bytes_read = getpkt_sane (&rs->buf, 0); | |
a6b151f1 DJ |
12243 | |
12244 | /* If it timed out, something is wrong. Don't try to parse the | |
12245 | buffer. */ | |
12246 | if (bytes_read < 0) | |
12247 | { | |
12248 | *remote_errno = FILEIO_EINVAL; | |
12249 | return -1; | |
12250 | } | |
12251 | ||
12252 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
12253 | { | |
12254 | case PACKET_ERROR: | |
12255 | *remote_errno = FILEIO_EINVAL; | |
12256 | return -1; | |
12257 | case PACKET_UNKNOWN: | |
12258 | *remote_errno = FILEIO_ENOSYS; | |
12259 | return -1; | |
12260 | case PACKET_OK: | |
12261 | break; | |
12262 | } | |
12263 | ||
8d64371b | 12264 | if (remote_hostio_parse_result (rs->buf.data (), &ret, remote_errno, |
a6b151f1 DJ |
12265 | &attachment_tmp)) |
12266 | { | |
12267 | *remote_errno = FILEIO_EINVAL; | |
12268 | return -1; | |
12269 | } | |
12270 | ||
12271 | /* Make sure we saw an attachment if and only if we expected one. */ | |
12272 | if ((attachment_tmp == NULL && attachment != NULL) | |
12273 | || (attachment_tmp != NULL && attachment == NULL)) | |
12274 | { | |
12275 | *remote_errno = FILEIO_EINVAL; | |
12276 | return -1; | |
12277 | } | |
12278 | ||
12279 | /* If an attachment was found, it must point into the packet buffer; | |
12280 | work out how many bytes there were. */ | |
12281 | if (attachment_tmp != NULL) | |
12282 | { | |
12283 | *attachment = attachment_tmp; | |
8d64371b | 12284 | *attachment_len = bytes_read - (*attachment - rs->buf.data ()); |
a6b151f1 DJ |
12285 | } |
12286 | ||
12287 | return ret; | |
12288 | } | |
12289 | ||
dd194f6b | 12290 | /* See declaration.h. */ |
80152258 | 12291 | |
dd194f6b PA |
12292 | void |
12293 | readahead_cache::invalidate () | |
80152258 | 12294 | { |
dd194f6b | 12295 | this->fd = -1; |
80152258 PA |
12296 | } |
12297 | ||
dd194f6b | 12298 | /* See declaration.h. */ |
80152258 | 12299 | |
dd194f6b PA |
12300 | void |
12301 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 12302 | { |
dd194f6b PA |
12303 | if (this->fd == fd) |
12304 | this->fd = -1; | |
80152258 PA |
12305 | } |
12306 | ||
15a201c8 GB |
12307 | /* Set the filesystem remote_hostio functions that take FILENAME |
12308 | arguments will use. Return 0 on success, or -1 if an error | |
12309 | occurs (and set *REMOTE_ERRNO). */ | |
12310 | ||
6b8edb51 PA |
12311 | int |
12312 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
12313 | int *remote_errno) | |
15a201c8 GB |
12314 | { |
12315 | struct remote_state *rs = get_remote_state (); | |
12316 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
8d64371b | 12317 | char *p = rs->buf.data (); |
15a201c8 GB |
12318 | int left = get_remote_packet_size () - 1; |
12319 | char arg[9]; | |
12320 | int ret; | |
12321 | ||
12322 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
12323 | return 0; | |
12324 | ||
12325 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
12326 | return 0; | |
12327 | ||
12328 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
12329 | ||
12330 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
12331 | remote_buffer_add_string (&p, &left, arg); | |
12332 | ||
8d64371b | 12333 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_setfs, |
15a201c8 GB |
12334 | remote_errno, NULL, NULL); |
12335 | ||
12336 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
12337 | return 0; | |
12338 | ||
12339 | if (ret == 0) | |
12340 | rs->fs_pid = required_pid; | |
12341 | ||
12342 | return ret; | |
12343 | } | |
12344 | ||
12e2a5fd | 12345 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 12346 | |
6b8edb51 PA |
12347 | int |
12348 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
12349 | int flags, int mode, int warn_if_slow, | |
12350 | int *remote_errno) | |
a6b151f1 DJ |
12351 | { |
12352 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12353 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12354 | int left = get_remote_packet_size () - 1; |
12355 | ||
4313b8c0 GB |
12356 | if (warn_if_slow) |
12357 | { | |
12358 | static int warning_issued = 0; | |
12359 | ||
12360 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
12361 | filename); | |
12362 | ||
12363 | if (!warning_issued) | |
12364 | { | |
12365 | warning (_("File transfers from remote targets can be slow." | |
12366 | " Use \"set sysroot\" to access files locally" | |
12367 | " instead.")); | |
12368 | warning_issued = 1; | |
12369 | } | |
12370 | } | |
12371 | ||
15a201c8 GB |
12372 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12373 | return -1; | |
12374 | ||
a6b151f1 DJ |
12375 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
12376 | ||
12377 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12378 | strlen (filename)); | |
12379 | remote_buffer_add_string (&p, &left, ","); | |
12380 | ||
12381 | remote_buffer_add_int (&p, &left, flags); | |
12382 | remote_buffer_add_string (&p, &left, ","); | |
12383 | ||
12384 | remote_buffer_add_int (&p, &left, mode); | |
12385 | ||
8d64371b | 12386 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_open, |
a6b151f1 DJ |
12387 | remote_errno, NULL, NULL); |
12388 | } | |
12389 | ||
f6ac5f3d PA |
12390 | int |
12391 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
12392 | int flags, int mode, int warn_if_slow, | |
12393 | int *remote_errno) | |
12394 | { | |
6b8edb51 | 12395 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
12396 | remote_errno); |
12397 | } | |
12398 | ||
12e2a5fd | 12399 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 12400 | |
6b8edb51 PA |
12401 | int |
12402 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12403 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12404 | { |
12405 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12406 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12407 | int left = get_remote_packet_size (); |
12408 | int out_len; | |
12409 | ||
dd194f6b | 12410 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12411 | |
a6b151f1 DJ |
12412 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
12413 | ||
12414 | remote_buffer_add_int (&p, &left, fd); | |
12415 | remote_buffer_add_string (&p, &left, ","); | |
12416 | ||
12417 | remote_buffer_add_int (&p, &left, offset); | |
12418 | remote_buffer_add_string (&p, &left, ","); | |
12419 | ||
124e13d9 | 12420 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
8d64371b TT |
12421 | (get_remote_packet_size () |
12422 | - (p - rs->buf.data ()))); | |
a6b151f1 | 12423 | |
8d64371b | 12424 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pwrite, |
a6b151f1 DJ |
12425 | remote_errno, NULL, NULL); |
12426 | } | |
12427 | ||
f6ac5f3d PA |
12428 | int |
12429 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12430 | ULONGEST offset, int *remote_errno) | |
12431 | { | |
6b8edb51 | 12432 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12433 | } |
12434 | ||
80152258 PA |
12435 | /* Helper for the implementation of to_fileio_pread. Read the file |
12436 | from the remote side with vFile:pread. */ | |
a6b151f1 | 12437 | |
6b8edb51 PA |
12438 | int |
12439 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
12440 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12441 | { |
12442 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12443 | char *p = rs->buf.data (); |
aa2838cc | 12444 | const char *attachment; |
a6b151f1 DJ |
12445 | int left = get_remote_packet_size (); |
12446 | int ret, attachment_len; | |
12447 | int read_len; | |
12448 | ||
12449 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
12450 | ||
12451 | remote_buffer_add_int (&p, &left, fd); | |
12452 | remote_buffer_add_string (&p, &left, ","); | |
12453 | ||
12454 | remote_buffer_add_int (&p, &left, len); | |
12455 | remote_buffer_add_string (&p, &left, ","); | |
12456 | ||
12457 | remote_buffer_add_int (&p, &left, offset); | |
12458 | ||
8d64371b | 12459 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pread, |
a6b151f1 DJ |
12460 | remote_errno, &attachment, |
12461 | &attachment_len); | |
12462 | ||
12463 | if (ret < 0) | |
12464 | return ret; | |
12465 | ||
bc20a4af | 12466 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
12467 | read_buf, len); |
12468 | if (read_len != ret) | |
12469 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
12470 | ||
12471 | return ret; | |
12472 | } | |
12473 | ||
dd194f6b | 12474 | /* See declaration.h. */ |
80152258 | 12475 | |
dd194f6b PA |
12476 | int |
12477 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
12478 | ULONGEST offset) | |
80152258 | 12479 | { |
dd194f6b PA |
12480 | if (this->fd == fd |
12481 | && this->offset <= offset | |
12482 | && offset < this->offset + this->bufsize) | |
80152258 | 12483 | { |
dd194f6b | 12484 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
12485 | |
12486 | if (offset + len > max) | |
12487 | len = max - offset; | |
12488 | ||
dd194f6b | 12489 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
12490 | return len; |
12491 | } | |
12492 | ||
12493 | return 0; | |
12494 | } | |
12495 | ||
12496 | /* Implementation of to_fileio_pread. */ | |
12497 | ||
6b8edb51 PA |
12498 | int |
12499 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
12500 | ULONGEST offset, int *remote_errno) | |
80152258 PA |
12501 | { |
12502 | int ret; | |
12503 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12504 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12505 | |
dd194f6b | 12506 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12507 | if (ret > 0) |
12508 | { | |
12509 | cache->hit_count++; | |
12510 | ||
2189c312 SM |
12511 | remote_debug_printf ("readahead cache hit %s", |
12512 | pulongest (cache->hit_count)); | |
80152258 PA |
12513 | return ret; |
12514 | } | |
12515 | ||
12516 | cache->miss_count++; | |
2189c312 SM |
12517 | |
12518 | remote_debug_printf ("readahead cache miss %s", | |
12519 | pulongest (cache->miss_count)); | |
80152258 PA |
12520 | |
12521 | cache->fd = fd; | |
12522 | cache->offset = offset; | |
12523 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 12524 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 | 12525 | |
6b8edb51 | 12526 | ret = remote_hostio_pread_vFile (cache->fd, cache->buf, cache->bufsize, |
80152258 PA |
12527 | cache->offset, remote_errno); |
12528 | if (ret <= 0) | |
12529 | { | |
dd194f6b | 12530 | cache->invalidate_fd (fd); |
80152258 PA |
12531 | return ret; |
12532 | } | |
12533 | ||
12534 | cache->bufsize = ret; | |
dd194f6b | 12535 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12536 | } |
12537 | ||
f6ac5f3d PA |
12538 | int |
12539 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
12540 | ULONGEST offset, int *remote_errno) | |
12541 | { | |
6b8edb51 | 12542 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12543 | } |
12544 | ||
12e2a5fd | 12545 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12546 | |
6b8edb51 PA |
12547 | int |
12548 | remote_target::remote_hostio_close (int fd, int *remote_errno) | |
a6b151f1 DJ |
12549 | { |
12550 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12551 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12552 | int left = get_remote_packet_size () - 1; |
12553 | ||
dd194f6b | 12554 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12555 | |
a6b151f1 DJ |
12556 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12557 | ||
12558 | remote_buffer_add_int (&p, &left, fd); | |
12559 | ||
8d64371b | 12560 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_close, |
a6b151f1 DJ |
12561 | remote_errno, NULL, NULL); |
12562 | } | |
12563 | ||
f6ac5f3d PA |
12564 | int |
12565 | remote_target::fileio_close (int fd, int *remote_errno) | |
12566 | { | |
6b8edb51 | 12567 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12568 | } |
12569 | ||
12e2a5fd | 12570 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12571 | |
6b8edb51 PA |
12572 | int |
12573 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
12574 | int *remote_errno) | |
a6b151f1 DJ |
12575 | { |
12576 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12577 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12578 | int left = get_remote_packet_size () - 1; |
12579 | ||
15a201c8 GB |
12580 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12581 | return -1; | |
12582 | ||
a6b151f1 DJ |
12583 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12584 | ||
12585 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12586 | strlen (filename)); | |
12587 | ||
8d64371b | 12588 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_unlink, |
a6b151f1 DJ |
12589 | remote_errno, NULL, NULL); |
12590 | } | |
12591 | ||
f6ac5f3d PA |
12592 | int |
12593 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
12594 | int *remote_errno) | |
12595 | { | |
6b8edb51 | 12596 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12597 | } |
12598 | ||
12e2a5fd | 12599 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12600 | |
f6ac5f3d PA |
12601 | gdb::optional<std::string> |
12602 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
12603 | int *remote_errno) | |
b9e7b9c3 UW |
12604 | { |
12605 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12606 | char *p = rs->buf.data (); |
aa2838cc | 12607 | const char *attachment; |
b9e7b9c3 UW |
12608 | int left = get_remote_packet_size (); |
12609 | int len, attachment_len; | |
12610 | int read_len; | |
b9e7b9c3 | 12611 | |
15a201c8 | 12612 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12613 | return {}; |
15a201c8 | 12614 | |
b9e7b9c3 UW |
12615 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12616 | ||
12617 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12618 | strlen (filename)); | |
12619 | ||
8d64371b | 12620 | len = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_readlink, |
b9e7b9c3 UW |
12621 | remote_errno, &attachment, |
12622 | &attachment_len); | |
12623 | ||
12624 | if (len < 0) | |
e0d3522b | 12625 | return {}; |
b9e7b9c3 | 12626 | |
e0d3522b | 12627 | std::string ret (len, '\0'); |
b9e7b9c3 | 12628 | |
bc20a4af | 12629 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12630 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12631 | if (read_len != len) |
12632 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12633 | ||
b9e7b9c3 UW |
12634 | return ret; |
12635 | } | |
12636 | ||
12e2a5fd | 12637 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12638 | |
f6ac5f3d PA |
12639 | int |
12640 | remote_target::fileio_fstat (int fd, struct stat *st, int *remote_errno) | |
0a93529c GB |
12641 | { |
12642 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12643 | char *p = rs->buf.data (); |
0a93529c GB |
12644 | int left = get_remote_packet_size (); |
12645 | int attachment_len, ret; | |
aa2838cc | 12646 | const char *attachment; |
0a93529c GB |
12647 | struct fio_stat fst; |
12648 | int read_len; | |
12649 | ||
464b0089 GB |
12650 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12651 | ||
12652 | remote_buffer_add_int (&p, &left, fd); | |
12653 | ||
8d64371b | 12654 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_fstat, |
464b0089 GB |
12655 | remote_errno, &attachment, |
12656 | &attachment_len); | |
12657 | if (ret < 0) | |
0a93529c | 12658 | { |
464b0089 GB |
12659 | if (*remote_errno != FILEIO_ENOSYS) |
12660 | return ret; | |
12661 | ||
0a93529c GB |
12662 | /* Strictly we should return -1, ENOSYS here, but when |
12663 | "set sysroot remote:" was implemented in August 2008 | |
12664 | BFD's need for a stat function was sidestepped with | |
12665 | this hack. This was not remedied until March 2015 | |
12666 | so we retain the previous behavior to avoid breaking | |
12667 | compatibility. | |
12668 | ||
12669 | Note that the memset is a March 2015 addition; older | |
12670 | GDBs set st_size *and nothing else* so the structure | |
12671 | would have garbage in all other fields. This might | |
12672 | break something but retaining the previous behavior | |
12673 | here would be just too wrong. */ | |
12674 | ||
12675 | memset (st, 0, sizeof (struct stat)); | |
12676 | st->st_size = INT_MAX; | |
12677 | return 0; | |
12678 | } | |
12679 | ||
0a93529c GB |
12680 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12681 | (gdb_byte *) &fst, sizeof (fst)); | |
12682 | ||
12683 | if (read_len != ret) | |
12684 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12685 | ||
12686 | if (read_len != sizeof (fst)) | |
12687 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12688 | read_len, (int) sizeof (fst)); | |
12689 | ||
12690 | remote_fileio_to_host_stat (&fst, st); | |
12691 | ||
12692 | return 0; | |
12693 | } | |
12694 | ||
12e2a5fd | 12695 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12696 | |
57810aa7 | 12697 | bool |
f6ac5f3d | 12698 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12699 | { |
12700 | /* Valgrind GDB presents itself as a remote target but works | |
12701 | on the local filesystem: it does not implement remote get | |
12702 | and users are not expected to set a sysroot. To handle | |
12703 | this case we treat the remote filesystem as local if the | |
12704 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12705 | does not support vFile:open. */ | |
e0700ba4 | 12706 | if (gdb_sysroot == TARGET_SYSROOT_PREFIX) |
e3dd7556 GB |
12707 | { |
12708 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12709 | ||
12710 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12711 | { | |
12712 | int fd, remote_errno; | |
12713 | ||
12714 | /* Try opening a file to probe support. The supplied | |
12715 | filename is irrelevant, we only care about whether | |
12716 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12717 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12718 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12719 | &remote_errno); |
12720 | ||
12721 | if (fd >= 0) | |
6b8edb51 | 12722 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 GB |
12723 | |
12724 | ps = packet_support (PACKET_vFile_open); | |
12725 | } | |
12726 | ||
12727 | if (ps == PACKET_DISABLE) | |
12728 | { | |
12729 | static int warning_issued = 0; | |
12730 | ||
12731 | if (!warning_issued) | |
12732 | { | |
12733 | warning (_("remote target does not support file" | |
12734 | " transfer, attempting to access files" | |
12735 | " from local filesystem.")); | |
12736 | warning_issued = 1; | |
12737 | } | |
12738 | ||
57810aa7 | 12739 | return true; |
e3dd7556 GB |
12740 | } |
12741 | } | |
12742 | ||
57810aa7 | 12743 | return false; |
e3dd7556 GB |
12744 | } |
12745 | ||
a6b151f1 DJ |
12746 | static int |
12747 | remote_fileio_errno_to_host (int errnum) | |
12748 | { | |
12749 | switch (errnum) | |
12750 | { | |
12751 | case FILEIO_EPERM: | |
dda83cd7 | 12752 | return EPERM; |
a6b151f1 | 12753 | case FILEIO_ENOENT: |
dda83cd7 | 12754 | return ENOENT; |
a6b151f1 | 12755 | case FILEIO_EINTR: |
dda83cd7 | 12756 | return EINTR; |
a6b151f1 | 12757 | case FILEIO_EIO: |
dda83cd7 | 12758 | return EIO; |
a6b151f1 | 12759 | case FILEIO_EBADF: |
dda83cd7 | 12760 | return EBADF; |
a6b151f1 | 12761 | case FILEIO_EACCES: |
dda83cd7 | 12762 | return EACCES; |
a6b151f1 | 12763 | case FILEIO_EFAULT: |
dda83cd7 | 12764 | return EFAULT; |
a6b151f1 | 12765 | case FILEIO_EBUSY: |
dda83cd7 | 12766 | return EBUSY; |
a6b151f1 | 12767 | case FILEIO_EEXIST: |
dda83cd7 | 12768 | return EEXIST; |
a6b151f1 | 12769 | case FILEIO_ENODEV: |
dda83cd7 | 12770 | return ENODEV; |
a6b151f1 | 12771 | case FILEIO_ENOTDIR: |
dda83cd7 | 12772 | return ENOTDIR; |
a6b151f1 | 12773 | case FILEIO_EISDIR: |
dda83cd7 | 12774 | return EISDIR; |
a6b151f1 | 12775 | case FILEIO_EINVAL: |
dda83cd7 | 12776 | return EINVAL; |
a6b151f1 | 12777 | case FILEIO_ENFILE: |
dda83cd7 | 12778 | return ENFILE; |
a6b151f1 | 12779 | case FILEIO_EMFILE: |
dda83cd7 | 12780 | return EMFILE; |
a6b151f1 | 12781 | case FILEIO_EFBIG: |
dda83cd7 | 12782 | return EFBIG; |
a6b151f1 | 12783 | case FILEIO_ENOSPC: |
dda83cd7 | 12784 | return ENOSPC; |
a6b151f1 | 12785 | case FILEIO_ESPIPE: |
dda83cd7 | 12786 | return ESPIPE; |
a6b151f1 | 12787 | case FILEIO_EROFS: |
dda83cd7 | 12788 | return EROFS; |
a6b151f1 | 12789 | case FILEIO_ENOSYS: |
dda83cd7 | 12790 | return ENOSYS; |
a6b151f1 | 12791 | case FILEIO_ENAMETOOLONG: |
dda83cd7 | 12792 | return ENAMETOOLONG; |
a6b151f1 DJ |
12793 | } |
12794 | return -1; | |
12795 | } | |
12796 | ||
12797 | static char * | |
12798 | remote_hostio_error (int errnum) | |
12799 | { | |
12800 | int host_error = remote_fileio_errno_to_host (errnum); | |
12801 | ||
12802 | if (host_error == -1) | |
12803 | error (_("Unknown remote I/O error %d"), errnum); | |
12804 | else | |
12805 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12806 | } | |
12807 | ||
440b7aec PA |
12808 | /* A RAII wrapper around a remote file descriptor. */ |
12809 | ||
12810 | class scoped_remote_fd | |
a6b151f1 | 12811 | { |
440b7aec | 12812 | public: |
6b8edb51 PA |
12813 | scoped_remote_fd (remote_target *remote, int fd) |
12814 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12815 | { |
12816 | } | |
a6b151f1 | 12817 | |
440b7aec PA |
12818 | ~scoped_remote_fd () |
12819 | { | |
12820 | if (m_fd != -1) | |
12821 | { | |
12822 | try | |
12823 | { | |
12824 | int remote_errno; | |
6b8edb51 | 12825 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12826 | } |
12827 | catch (...) | |
12828 | { | |
12829 | /* Swallow exception before it escapes the dtor. If | |
12830 | something goes wrong, likely the connection is gone, | |
12831 | and there's nothing else that can be done. */ | |
12832 | } | |
12833 | } | |
12834 | } | |
12835 | ||
12836 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12837 | ||
12838 | /* Release ownership of the file descriptor, and return it. */ | |
88a774b9 | 12839 | ATTRIBUTE_UNUSED_RESULT int release () noexcept |
440b7aec PA |
12840 | { |
12841 | int fd = m_fd; | |
12842 | m_fd = -1; | |
12843 | return fd; | |
12844 | } | |
12845 | ||
12846 | /* Return the owned file descriptor. */ | |
12847 | int get () const noexcept | |
12848 | { | |
12849 | return m_fd; | |
12850 | } | |
12851 | ||
12852 | private: | |
6b8edb51 PA |
12853 | /* The remote target. */ |
12854 | remote_target *m_remote; | |
12855 | ||
440b7aec PA |
12856 | /* The owned remote I/O file descriptor. */ |
12857 | int m_fd; | |
12858 | }; | |
a6b151f1 DJ |
12859 | |
12860 | void | |
12861 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12862 | { |
12863 | remote_target *remote = get_current_remote_target (); | |
12864 | ||
12865 | if (remote == nullptr) | |
12866 | error (_("command can only be used with remote target")); | |
12867 | ||
12868 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12869 | } | |
12870 | ||
12871 | void | |
12872 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12873 | int from_tty) | |
a6b151f1 | 12874 | { |
440b7aec | 12875 | int retcode, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12876 | int bytes_in_buffer; |
12877 | int saw_eof; | |
12878 | ULONGEST offset; | |
a6b151f1 | 12879 | |
d419f42d | 12880 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12881 | if (file == NULL) |
12882 | perror_with_name (local_file); | |
a6b151f1 | 12883 | |
440b7aec | 12884 | scoped_remote_fd fd |
6b8edb51 PA |
12885 | (this, remote_hostio_open (NULL, |
12886 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12887 | | FILEIO_O_TRUNC), | |
12888 | 0700, 0, &remote_errno)); | |
440b7aec | 12889 | if (fd.get () == -1) |
a6b151f1 DJ |
12890 | remote_hostio_error (remote_errno); |
12891 | ||
12892 | /* Send up to this many bytes at once. They won't all fit in the | |
12893 | remote packet limit, so we'll transfer slightly fewer. */ | |
12894 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12895 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12896 | |
a6b151f1 DJ |
12897 | bytes_in_buffer = 0; |
12898 | saw_eof = 0; | |
12899 | offset = 0; | |
12900 | while (bytes_in_buffer || !saw_eof) | |
12901 | { | |
12902 | if (!saw_eof) | |
12903 | { | |
5ca3b260 | 12904 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12905 | io_size - bytes_in_buffer, |
d419f42d | 12906 | file.get ()); |
a6b151f1 DJ |
12907 | if (bytes == 0) |
12908 | { | |
d419f42d | 12909 | if (ferror (file.get ())) |
a6b151f1 DJ |
12910 | error (_("Error reading %s."), local_file); |
12911 | else | |
12912 | { | |
12913 | /* EOF. Unless there is something still in the | |
12914 | buffer from the last iteration, we are done. */ | |
12915 | saw_eof = 1; | |
12916 | if (bytes_in_buffer == 0) | |
12917 | break; | |
12918 | } | |
12919 | } | |
12920 | } | |
12921 | else | |
12922 | bytes = 0; | |
12923 | ||
12924 | bytes += bytes_in_buffer; | |
12925 | bytes_in_buffer = 0; | |
12926 | ||
5ca3b260 | 12927 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 12928 | offset, &remote_errno); |
a6b151f1 DJ |
12929 | |
12930 | if (retcode < 0) | |
12931 | remote_hostio_error (remote_errno); | |
12932 | else if (retcode == 0) | |
12933 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12934 | else if (retcode < bytes) | |
12935 | { | |
12936 | /* Short write. Save the rest of the read data for the next | |
12937 | write. */ | |
12938 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 12939 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
12940 | } |
12941 | ||
12942 | offset += retcode; | |
12943 | } | |
12944 | ||
6b8edb51 | 12945 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12946 | remote_hostio_error (remote_errno); |
12947 | ||
12948 | if (from_tty) | |
12949 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
a6b151f1 DJ |
12950 | } |
12951 | ||
12952 | void | |
12953 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
12954 | { |
12955 | remote_target *remote = get_current_remote_target (); | |
12956 | ||
12957 | if (remote == nullptr) | |
12958 | error (_("command can only be used with remote target")); | |
12959 | ||
12960 | remote->remote_file_get (remote_file, local_file, from_tty); | |
12961 | } | |
12962 | ||
12963 | void | |
12964 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
12965 | int from_tty) | |
a6b151f1 | 12966 | { |
440b7aec | 12967 | int remote_errno, bytes, io_size; |
a6b151f1 | 12968 | ULONGEST offset; |
a6b151f1 | 12969 | |
440b7aec | 12970 | scoped_remote_fd fd |
6b8edb51 PA |
12971 | (this, remote_hostio_open (NULL, |
12972 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12973 | &remote_errno)); | |
440b7aec | 12974 | if (fd.get () == -1) |
a6b151f1 DJ |
12975 | remote_hostio_error (remote_errno); |
12976 | ||
d419f42d | 12977 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12978 | if (file == NULL) |
12979 | perror_with_name (local_file); | |
a6b151f1 DJ |
12980 | |
12981 | /* Send up to this many bytes at once. They won't all fit in the | |
12982 | remote packet limit, so we'll transfer slightly fewer. */ | |
12983 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12984 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12985 | |
a6b151f1 DJ |
12986 | offset = 0; |
12987 | while (1) | |
12988 | { | |
5ca3b260 | 12989 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 12990 | &remote_errno); |
a6b151f1 DJ |
12991 | if (bytes == 0) |
12992 | /* Success, but no bytes, means end-of-file. */ | |
12993 | break; | |
12994 | if (bytes == -1) | |
12995 | remote_hostio_error (remote_errno); | |
12996 | ||
12997 | offset += bytes; | |
12998 | ||
5ca3b260 | 12999 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
13000 | if (bytes == 0) |
13001 | perror_with_name (local_file); | |
13002 | } | |
13003 | ||
6b8edb51 | 13004 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
13005 | remote_hostio_error (remote_errno); |
13006 | ||
13007 | if (from_tty) | |
13008 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
a6b151f1 DJ |
13009 | } |
13010 | ||
13011 | void | |
13012 | remote_file_delete (const char *remote_file, int from_tty) | |
13013 | { | |
6b8edb51 | 13014 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 13015 | |
6b8edb51 | 13016 | if (remote == nullptr) |
a6b151f1 DJ |
13017 | error (_("command can only be used with remote target")); |
13018 | ||
6b8edb51 PA |
13019 | remote->remote_file_delete (remote_file, from_tty); |
13020 | } | |
13021 | ||
13022 | void | |
13023 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
13024 | { | |
13025 | int retcode, remote_errno; | |
13026 | ||
13027 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
13028 | if (retcode == -1) |
13029 | remote_hostio_error (remote_errno); | |
13030 | ||
13031 | if (from_tty) | |
13032 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
13033 | } | |
13034 | ||
13035 | static void | |
ac88e2de | 13036 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 13037 | { |
d1a41061 PP |
13038 | if (args == NULL) |
13039 | error_no_arg (_("file to put")); | |
13040 | ||
773a1edc | 13041 | gdb_argv argv (args); |
a6b151f1 DJ |
13042 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
13043 | error (_("Invalid parameters to remote put")); | |
13044 | ||
13045 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
13046 | } |
13047 | ||
13048 | static void | |
ac88e2de | 13049 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 13050 | { |
d1a41061 PP |
13051 | if (args == NULL) |
13052 | error_no_arg (_("file to get")); | |
13053 | ||
773a1edc | 13054 | gdb_argv argv (args); |
a6b151f1 DJ |
13055 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
13056 | error (_("Invalid parameters to remote get")); | |
13057 | ||
13058 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
13059 | } |
13060 | ||
13061 | static void | |
ac88e2de | 13062 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 13063 | { |
d1a41061 PP |
13064 | if (args == NULL) |
13065 | error_no_arg (_("file to delete")); | |
13066 | ||
773a1edc | 13067 | gdb_argv argv (args); |
a6b151f1 DJ |
13068 | if (argv[0] == NULL || argv[1] != NULL) |
13069 | error (_("Invalid parameters to remote delete")); | |
13070 | ||
13071 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
13072 | } |
13073 | ||
57810aa7 | 13074 | bool |
f6ac5f3d | 13075 | remote_target::can_execute_reverse () |
b2175913 | 13076 | { |
4082afcc PA |
13077 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
13078 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 13079 | return true; |
40ab02ce | 13080 | else |
57810aa7 | 13081 | return false; |
b2175913 MS |
13082 | } |
13083 | ||
57810aa7 | 13084 | bool |
f6ac5f3d | 13085 | remote_target::supports_non_stop () |
74531fed | 13086 | { |
57810aa7 | 13087 | return true; |
74531fed PA |
13088 | } |
13089 | ||
57810aa7 | 13090 | bool |
f6ac5f3d | 13091 | remote_target::supports_disable_randomization () |
03583c20 UW |
13092 | { |
13093 | /* Only supported in extended mode. */ | |
57810aa7 | 13094 | return false; |
03583c20 UW |
13095 | } |
13096 | ||
57810aa7 | 13097 | bool |
f6ac5f3d | 13098 | remote_target::supports_multi_process () |
8a305172 PA |
13099 | { |
13100 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 13101 | |
8020350c | 13102 | return remote_multi_process_p (rs); |
8a305172 PA |
13103 | } |
13104 | ||
70221824 | 13105 | static int |
f6ac5f3d | 13106 | remote_supports_cond_tracepoints () |
782b2b07 | 13107 | { |
4082afcc | 13108 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
13109 | } |
13110 | ||
57810aa7 | 13111 | bool |
f6ac5f3d | 13112 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 13113 | { |
4082afcc | 13114 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
13115 | } |
13116 | ||
70221824 | 13117 | static int |
f6ac5f3d | 13118 | remote_supports_fast_tracepoints () |
7a697b8d | 13119 | { |
4082afcc | 13120 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
13121 | } |
13122 | ||
0fb4aa4b | 13123 | static int |
f6ac5f3d | 13124 | remote_supports_static_tracepoints () |
0fb4aa4b | 13125 | { |
4082afcc | 13126 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
13127 | } |
13128 | ||
1e4d1764 | 13129 | static int |
f6ac5f3d | 13130 | remote_supports_install_in_trace () |
1e4d1764 | 13131 | { |
4082afcc | 13132 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
13133 | } |
13134 | ||
57810aa7 | 13135 | bool |
f6ac5f3d | 13136 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 13137 | { |
4082afcc PA |
13138 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
13139 | == PACKET_ENABLE); | |
d248b706 KY |
13140 | } |
13141 | ||
57810aa7 | 13142 | bool |
f6ac5f3d | 13143 | remote_target::supports_string_tracing () |
3065dfb6 | 13144 | { |
4082afcc | 13145 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
13146 | } |
13147 | ||
57810aa7 | 13148 | bool |
f6ac5f3d | 13149 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 13150 | { |
4082afcc | 13151 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
13152 | } |
13153 | ||
f6ac5f3d PA |
13154 | void |
13155 | remote_target::trace_init () | |
35b1e5cc | 13156 | { |
b6bb3468 PA |
13157 | struct remote_state *rs = get_remote_state (); |
13158 | ||
35b1e5cc | 13159 | putpkt ("QTinit"); |
b6bb3468 | 13160 | remote_get_noisy_reply (); |
8d64371b | 13161 | if (strcmp (rs->buf.data (), "OK") != 0) |
35b1e5cc SS |
13162 | error (_("Target does not support this command.")); |
13163 | } | |
13164 | ||
409873ef SS |
13165 | /* Recursive routine to walk through command list including loops, and |
13166 | download packets for each command. */ | |
13167 | ||
6b8edb51 PA |
13168 | void |
13169 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
13170 | struct command_line *cmds) | |
409873ef SS |
13171 | { |
13172 | struct remote_state *rs = get_remote_state (); | |
13173 | struct command_line *cmd; | |
13174 | ||
13175 | for (cmd = cmds; cmd; cmd = cmd->next) | |
13176 | { | |
0df8b418 | 13177 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 13178 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 13179 | encode_source_string (num, addr, "cmd", cmd->line, |
8d64371b TT |
13180 | rs->buf.data () + strlen (rs->buf.data ()), |
13181 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13182 | putpkt (rs->buf); |
b6bb3468 | 13183 | remote_get_noisy_reply (); |
8d64371b | 13184 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13185 | warning (_("Target does not support source download.")); |
13186 | ||
13187 | if (cmd->control_type == while_control | |
13188 | || cmd->control_type == while_stepping_control) | |
13189 | { | |
12973681 | 13190 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 13191 | |
0df8b418 | 13192 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 13193 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 13194 | encode_source_string (num, addr, "cmd", "end", |
8d64371b TT |
13195 | rs->buf.data () + strlen (rs->buf.data ()), |
13196 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13197 | putpkt (rs->buf); |
b6bb3468 | 13198 | remote_get_noisy_reply (); |
8d64371b | 13199 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13200 | warning (_("Target does not support source download.")); |
13201 | } | |
13202 | } | |
13203 | } | |
13204 | ||
f6ac5f3d PA |
13205 | void |
13206 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc SS |
13207 | { |
13208 | CORE_ADDR tpaddr; | |
409873ef | 13209 | char addrbuf[40]; |
b44ec619 SM |
13210 | std::vector<std::string> tdp_actions; |
13211 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 13212 | char *pkt; |
e8ba3115 | 13213 | struct breakpoint *b = loc->owner; |
d9b3f62e | 13214 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 13215 | struct remote_state *rs = get_remote_state (); |
3df3a985 | 13216 | int ret; |
ff36536c | 13217 | const char *err_msg = _("Tracepoint packet too large for target."); |
3df3a985 PFC |
13218 | size_t size_left; |
13219 | ||
13220 | /* We use a buffer other than rs->buf because we'll build strings | |
13221 | across multiple statements, and other statements in between could | |
13222 | modify rs->buf. */ | |
13223 | gdb::char_vector buf (get_remote_packet_size ()); | |
35b1e5cc | 13224 | |
dc673c81 | 13225 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
13226 | |
13227 | tpaddr = loc->address; | |
53807e9f | 13228 | strcpy (addrbuf, phex (tpaddr, sizeof (CORE_ADDR))); |
3df3a985 PFC |
13229 | ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x", |
13230 | b->number, addrbuf, /* address */ | |
13231 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
13232 | t->step_count, t->pass_count); | |
13233 | ||
13234 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13235 | error ("%s", err_msg); |
3df3a985 | 13236 | |
e8ba3115 YQ |
13237 | /* Fast tracepoints are mostly handled by the target, but we can |
13238 | tell the target how big of an instruction block should be moved | |
13239 | around. */ | |
13240 | if (b->type == bp_fast_tracepoint) | |
13241 | { | |
13242 | /* Only test for support at download time; we may not know | |
13243 | target capabilities at definition time. */ | |
13244 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 13245 | { |
6b940e6a PL |
13246 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
13247 | NULL)) | |
3df3a985 PFC |
13248 | { |
13249 | size_left = buf.size () - strlen (buf.data ()); | |
13250 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13251 | size_left, ":F%x", | |
13252 | gdb_insn_length (loc->gdbarch, tpaddr)); | |
13253 | ||
13254 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13255 | error ("%s", err_msg); |
3df3a985 | 13256 | } |
35b1e5cc | 13257 | else |
e8ba3115 YQ |
13258 | /* If it passed validation at definition but fails now, |
13259 | something is very wrong. */ | |
13260 | internal_error (__FILE__, __LINE__, | |
13261 | _("Fast tracepoint not " | |
13262 | "valid during download")); | |
35b1e5cc | 13263 | } |
e8ba3115 YQ |
13264 | else |
13265 | /* Fast tracepoints are functionally identical to regular | |
13266 | tracepoints, so don't take lack of support as a reason to | |
13267 | give up on the trace run. */ | |
13268 | warning (_("Target does not support fast tracepoints, " | |
13269 | "downloading %d as regular tracepoint"), b->number); | |
13270 | } | |
13271 | else if (b->type == bp_static_tracepoint) | |
13272 | { | |
13273 | /* Only test for support at download time; we may not know | |
13274 | target capabilities at definition time. */ | |
13275 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 13276 | { |
e8ba3115 | 13277 | struct static_tracepoint_marker marker; |
0fb4aa4b | 13278 | |
e8ba3115 | 13279 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
3df3a985 PFC |
13280 | { |
13281 | size_left = buf.size () - strlen (buf.data ()); | |
13282 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13283 | size_left, ":S"); | |
13284 | ||
13285 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13286 | error ("%s", err_msg); |
3df3a985 | 13287 | } |
0fb4aa4b | 13288 | else |
e8ba3115 | 13289 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 13290 | } |
e8ba3115 YQ |
13291 | else |
13292 | /* Fast tracepoints are functionally identical to regular | |
13293 | tracepoints, so don't take lack of support as a reason | |
13294 | to give up on the trace run. */ | |
13295 | error (_("Target does not support static tracepoints")); | |
13296 | } | |
13297 | /* If the tracepoint has a conditional, make it into an agent | |
13298 | expression and append to the definition. */ | |
13299 | if (loc->cond) | |
13300 | { | |
13301 | /* Only test support at download time, we may not know target | |
13302 | capabilities at definition time. */ | |
13303 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 13304 | { |
3df3a985 PFC |
13305 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, |
13306 | loc->cond.get ()); | |
13307 | ||
13308 | size_left = buf.size () - strlen (buf.data ()); | |
13309 | ||
13310 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13311 | size_left, ":X%x,", aexpr->len); | |
13312 | ||
13313 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13314 | error ("%s", err_msg); |
3df3a985 PFC |
13315 | |
13316 | size_left = buf.size () - strlen (buf.data ()); | |
13317 | ||
13318 | /* Two bytes to encode each aexpr byte, plus the terminating | |
13319 | null byte. */ | |
13320 | if (aexpr->len * 2 + 1 > size_left) | |
a7f25a84 | 13321 | error ("%s", err_msg); |
3df3a985 PFC |
13322 | |
13323 | pkt = buf.data () + strlen (buf.data ()); | |
13324 | ||
b44ec619 | 13325 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
13326 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
13327 | *pkt = '\0'; | |
35b1e5cc | 13328 | } |
e8ba3115 YQ |
13329 | else |
13330 | warning (_("Target does not support conditional tracepoints, " | |
13331 | "ignoring tp %d cond"), b->number); | |
13332 | } | |
35b1e5cc | 13333 | |
e0700ba4 | 13334 | if (b->commands || !default_collect.empty ()) |
3df3a985 PFC |
13335 | { |
13336 | size_left = buf.size () - strlen (buf.data ()); | |
13337 | ||
13338 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13339 | size_left, "-"); | |
13340 | ||
13341 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13342 | error ("%s", err_msg); |
3df3a985 PFC |
13343 | } |
13344 | ||
13345 | putpkt (buf.data ()); | |
b6bb3468 | 13346 | remote_get_noisy_reply (); |
8d64371b | 13347 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13348 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 13349 | |
e8ba3115 | 13350 | /* do_single_steps (t); */ |
b44ec619 SM |
13351 | for (auto action_it = tdp_actions.begin (); |
13352 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 13353 | { |
b44ec619 SM |
13354 | QUIT; /* Allow user to bail out with ^C. */ |
13355 | ||
aa6f3694 | 13356 | bool has_more = ((action_it + 1) != tdp_actions.end () |
b44ec619 SM |
13357 | || !stepping_actions.empty ()); |
13358 | ||
3df3a985 PFC |
13359 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c", |
13360 | b->number, addrbuf, /* address */ | |
13361 | action_it->c_str (), | |
13362 | has_more ? '-' : 0); | |
13363 | ||
13364 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13365 | error ("%s", err_msg); |
3df3a985 PFC |
13366 | |
13367 | putpkt (buf.data ()); | |
b44ec619 | 13368 | remote_get_noisy_reply (); |
8d64371b | 13369 | if (strcmp (rs->buf.data (), "OK")) |
b44ec619 | 13370 | error (_("Error on target while setting tracepoints.")); |
e8ba3115 | 13371 | } |
409873ef | 13372 | |
05abfc39 PFC |
13373 | for (auto action_it = stepping_actions.begin (); |
13374 | action_it != stepping_actions.end (); action_it++) | |
13375 | { | |
13376 | QUIT; /* Allow user to bail out with ^C. */ | |
13377 | ||
13378 | bool is_first = action_it == stepping_actions.begin (); | |
aa6f3694 | 13379 | bool has_more = (action_it + 1) != stepping_actions.end (); |
05abfc39 | 13380 | |
3df3a985 PFC |
13381 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s", |
13382 | b->number, addrbuf, /* address */ | |
13383 | is_first ? "S" : "", | |
13384 | action_it->c_str (), | |
13385 | has_more ? "-" : ""); | |
13386 | ||
13387 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13388 | error ("%s", err_msg); |
3df3a985 PFC |
13389 | |
13390 | putpkt (buf.data ()); | |
05abfc39 | 13391 | remote_get_noisy_reply (); |
8d64371b | 13392 | if (strcmp (rs->buf.data (), "OK")) |
05abfc39 PFC |
13393 | error (_("Error on target while setting tracepoints.")); |
13394 | } | |
b44ec619 | 13395 | |
4082afcc | 13396 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 13397 | { |
f00aae0f | 13398 | if (b->location != NULL) |
409873ef | 13399 | { |
3df3a985 PFC |
13400 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13401 | ||
13402 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13403 | error ("%s", err_msg); |
3df3a985 | 13404 | |
f00aae0f | 13405 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 13406 | event_location_to_string (b->location.get ()), |
3df3a985 PFC |
13407 | buf.data () + strlen (buf.data ()), |
13408 | buf.size () - strlen (buf.data ())); | |
13409 | putpkt (buf.data ()); | |
b6bb3468 | 13410 | remote_get_noisy_reply (); |
8d64371b | 13411 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13412 | warning (_("Target does not support source download.")); |
409873ef | 13413 | } |
e8ba3115 YQ |
13414 | if (b->cond_string) |
13415 | { | |
3df3a985 PFC |
13416 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13417 | ||
13418 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13419 | error ("%s", err_msg); |
3df3a985 | 13420 | |
e8ba3115 | 13421 | encode_source_string (b->number, loc->address, |
6f781ee3 | 13422 | "cond", b->cond_string.get (), |
3df3a985 PFC |
13423 | buf.data () + strlen (buf.data ()), |
13424 | buf.size () - strlen (buf.data ())); | |
13425 | putpkt (buf.data ()); | |
b6bb3468 | 13426 | remote_get_noisy_reply (); |
8d64371b | 13427 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 YQ |
13428 | warning (_("Target does not support source download.")); |
13429 | } | |
13430 | remote_download_command_source (b->number, loc->address, | |
13431 | breakpoint_commands (b)); | |
35b1e5cc | 13432 | } |
35b1e5cc SS |
13433 | } |
13434 | ||
57810aa7 | 13435 | bool |
f6ac5f3d | 13436 | remote_target::can_download_tracepoint () |
1e4d1764 | 13437 | { |
1e51243a PA |
13438 | struct remote_state *rs = get_remote_state (); |
13439 | struct trace_status *ts; | |
13440 | int status; | |
13441 | ||
13442 | /* Don't try to install tracepoints until we've relocated our | |
13443 | symbols, and fetched and merged the target's tracepoint list with | |
13444 | ours. */ | |
13445 | if (rs->starting_up) | |
57810aa7 | 13446 | return false; |
1e51243a PA |
13447 | |
13448 | ts = current_trace_status (); | |
f6ac5f3d | 13449 | status = get_trace_status (ts); |
1e4d1764 YQ |
13450 | |
13451 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 13452 | return false; |
1e4d1764 YQ |
13453 | |
13454 | /* If we are in a tracing experiment, but remote stub doesn't support | |
13455 | installing tracepoint in trace, we have to return. */ | |
13456 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 13457 | return false; |
1e4d1764 | 13458 | |
57810aa7 | 13459 | return true; |
1e4d1764 YQ |
13460 | } |
13461 | ||
13462 | ||
f6ac5f3d PA |
13463 | void |
13464 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
13465 | { |
13466 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 13467 | char *p; |
35b1e5cc | 13468 | |
8d64371b | 13469 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
13470 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
13471 | tsv.builtin); | |
8d64371b TT |
13472 | p = rs->buf.data () + strlen (rs->buf.data ()); |
13473 | if ((p - rs->buf.data ()) + tsv.name.length () * 2 | |
13474 | >= get_remote_packet_size ()) | |
00bf0b85 | 13475 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 13476 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 13477 | *p++ = '\0'; |
35b1e5cc | 13478 | putpkt (rs->buf); |
b6bb3468 | 13479 | remote_get_noisy_reply (); |
8d64371b | 13480 | if (rs->buf[0] == '\0') |
ad91cd99 | 13481 | error (_("Target does not support this command.")); |
8d64371b | 13482 | if (strcmp (rs->buf.data (), "OK") != 0) |
ad91cd99 | 13483 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13484 | } |
13485 | ||
f6ac5f3d PA |
13486 | void |
13487 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13488 | { |
13489 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13490 | |
8d64371b | 13491 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTEnable:%x:%s", |
53807e9f TT |
13492 | location->owner->number, |
13493 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13494 | putpkt (rs->buf); |
b6bb3468 | 13495 | remote_get_noisy_reply (); |
8d64371b | 13496 | if (rs->buf[0] == '\0') |
d248b706 | 13497 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13498 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13499 | error (_("Error on target while enabling tracepoint.")); |
13500 | } | |
13501 | ||
f6ac5f3d PA |
13502 | void |
13503 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13504 | { |
13505 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13506 | |
8d64371b | 13507 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDisable:%x:%s", |
53807e9f TT |
13508 | location->owner->number, |
13509 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13510 | putpkt (rs->buf); |
b6bb3468 | 13511 | remote_get_noisy_reply (); |
8d64371b | 13512 | if (rs->buf[0] == '\0') |
d248b706 | 13513 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13514 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13515 | error (_("Error on target while disabling tracepoint.")); |
13516 | } | |
13517 | ||
f6ac5f3d PA |
13518 | void |
13519 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13520 | { |
13521 | asection *s; | |
13522 | bfd_size_type size; | |
608bcef2 | 13523 | bfd_vma vma; |
35b1e5cc | 13524 | int anysecs = 0; |
c2fa21f1 | 13525 | int offset = 0; |
35b1e5cc | 13526 | |
7e10abd1 | 13527 | if (!current_program_space->exec_bfd ()) |
35b1e5cc SS |
13528 | return; /* No information to give. */ |
13529 | ||
b6bb3468 PA |
13530 | struct remote_state *rs = get_remote_state (); |
13531 | ||
8d64371b TT |
13532 | strcpy (rs->buf.data (), "QTro"); |
13533 | offset = strlen (rs->buf.data ()); | |
7e10abd1 | 13534 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
35b1e5cc SS |
13535 | { |
13536 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13537 | int sec_length; |
35b1e5cc SS |
13538 | |
13539 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 13540 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
13541 | (s->flags & SEC_READONLY) == 0) |
13542 | continue; | |
13543 | ||
13544 | anysecs = 1; | |
fd361982 AM |
13545 | vma = bfd_section_vma (s); |
13546 | size = bfd_section_size (s); | |
608bcef2 HZ |
13547 | sprintf_vma (tmp1, vma); |
13548 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 13549 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
8d64371b | 13550 | if (offset + sec_length + 1 > rs->buf.size ()) |
c2fa21f1 | 13551 | { |
4082afcc | 13552 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 13553 | warning (_("\ |
c2fa21f1 HZ |
13554 | Too many sections for read-only sections definition packet.")); |
13555 | break; | |
13556 | } | |
8d64371b | 13557 | xsnprintf (rs->buf.data () + offset, rs->buf.size () - offset, ":%s,%s", |
bba74b36 | 13558 | tmp1, tmp2); |
c2fa21f1 | 13559 | offset += sec_length; |
35b1e5cc SS |
13560 | } |
13561 | if (anysecs) | |
13562 | { | |
b6bb3468 | 13563 | putpkt (rs->buf); |
8d64371b | 13564 | getpkt (&rs->buf, 0); |
35b1e5cc SS |
13565 | } |
13566 | } | |
13567 | ||
f6ac5f3d PA |
13568 | void |
13569 | remote_target::trace_start () | |
35b1e5cc | 13570 | { |
b6bb3468 PA |
13571 | struct remote_state *rs = get_remote_state (); |
13572 | ||
35b1e5cc | 13573 | putpkt ("QTStart"); |
b6bb3468 | 13574 | remote_get_noisy_reply (); |
8d64371b | 13575 | if (rs->buf[0] == '\0') |
ad91cd99 | 13576 | error (_("Target does not support this command.")); |
8d64371b TT |
13577 | if (strcmp (rs->buf.data (), "OK") != 0) |
13578 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13579 | } |
13580 | ||
f6ac5f3d PA |
13581 | int |
13582 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13583 | { |
953b98d1 | 13584 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13585 | char *p = NULL; |
bd3eecc3 | 13586 | enum packet_result result; |
b6bb3468 | 13587 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13588 | |
4082afcc | 13589 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13590 | return -1; |
a744cf53 | 13591 | |
7b9a15e1 | 13592 | /* FIXME we need to get register block size some other way. */ |
5cd63fda | 13593 | trace_regblock_size |
9d6eea31 | 13594 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 13595 | |
049dc89b JK |
13596 | putpkt ("qTStatus"); |
13597 | ||
a70b8144 | 13598 | try |
67f41397 | 13599 | { |
b6bb3468 | 13600 | p = remote_get_noisy_reply (); |
67f41397 | 13601 | } |
230d2906 | 13602 | catch (const gdb_exception_error &ex) |
67f41397 | 13603 | { |
598d3636 JK |
13604 | if (ex.error != TARGET_CLOSE_ERROR) |
13605 | { | |
13606 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13607 | return -1; | |
13608 | } | |
eedc3f4f | 13609 | throw; |
67f41397 | 13610 | } |
00bf0b85 | 13611 | |
bd3eecc3 PA |
13612 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
13613 | ||
00bf0b85 | 13614 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13615 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13616 | return -1; |
35b1e5cc | 13617 | |
00bf0b85 | 13618 | /* We're working with a live target. */ |
f5911ea1 | 13619 | ts->filename = NULL; |
00bf0b85 | 13620 | |
00bf0b85 | 13621 | if (*p++ != 'T') |
8d64371b | 13622 | error (_("Bogus trace status reply from target: %s"), rs->buf.data ()); |
35b1e5cc | 13623 | |
84cebc4a YQ |
13624 | /* Function 'parse_trace_status' sets default value of each field of |
13625 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13626 | parse_trace_status (p, ts); |
13627 | ||
13628 | return ts->running; | |
35b1e5cc SS |
13629 | } |
13630 | ||
f6ac5f3d PA |
13631 | void |
13632 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13633 | struct uploaded_tp *utp) | |
f196051f SS |
13634 | { |
13635 | struct remote_state *rs = get_remote_state (); | |
f196051f | 13636 | char *reply; |
f196051f | 13637 | struct tracepoint *tp = (struct tracepoint *) bp; |
bba74b36 | 13638 | size_t size = get_remote_packet_size (); |
f196051f SS |
13639 | |
13640 | if (tp) | |
13641 | { | |
c1fc2657 | 13642 | tp->hit_count = 0; |
f196051f | 13643 | tp->traceframe_usage = 0; |
40cb8ca5 | 13644 | for (bp_location *loc : tp->locations ()) |
f196051f SS |
13645 | { |
13646 | /* If the tracepoint was never downloaded, don't go asking for | |
13647 | any status. */ | |
13648 | if (tp->number_on_target == 0) | |
13649 | continue; | |
8d64371b | 13650 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", tp->number_on_target, |
bba74b36 | 13651 | phex_nz (loc->address, 0)); |
f196051f | 13652 | putpkt (rs->buf); |
b6bb3468 | 13653 | reply = remote_get_noisy_reply (); |
f196051f SS |
13654 | if (reply && *reply) |
13655 | { | |
13656 | if (*reply == 'V') | |
13657 | parse_tracepoint_status (reply + 1, bp, utp); | |
13658 | } | |
13659 | } | |
13660 | } | |
13661 | else if (utp) | |
13662 | { | |
13663 | utp->hit_count = 0; | |
13664 | utp->traceframe_usage = 0; | |
8d64371b | 13665 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", utp->number, |
bba74b36 | 13666 | phex_nz (utp->addr, 0)); |
f196051f | 13667 | putpkt (rs->buf); |
b6bb3468 | 13668 | reply = remote_get_noisy_reply (); |
f196051f SS |
13669 | if (reply && *reply) |
13670 | { | |
13671 | if (*reply == 'V') | |
13672 | parse_tracepoint_status (reply + 1, bp, utp); | |
13673 | } | |
13674 | } | |
13675 | } | |
13676 | ||
f6ac5f3d PA |
13677 | void |
13678 | remote_target::trace_stop () | |
35b1e5cc | 13679 | { |
b6bb3468 PA |
13680 | struct remote_state *rs = get_remote_state (); |
13681 | ||
35b1e5cc | 13682 | putpkt ("QTStop"); |
b6bb3468 | 13683 | remote_get_noisy_reply (); |
8d64371b | 13684 | if (rs->buf[0] == '\0') |
ad91cd99 | 13685 | error (_("Target does not support this command.")); |
8d64371b TT |
13686 | if (strcmp (rs->buf.data (), "OK") != 0) |
13687 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13688 | } |
13689 | ||
f6ac5f3d PA |
13690 | int |
13691 | remote_target::trace_find (enum trace_find_type type, int num, | |
13692 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13693 | int *tpp) | |
35b1e5cc SS |
13694 | { |
13695 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 13696 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
35b1e5cc SS |
13697 | char *p, *reply; |
13698 | int target_frameno = -1, target_tracept = -1; | |
13699 | ||
e6e4e701 PA |
13700 | /* Lookups other than by absolute frame number depend on the current |
13701 | trace selected, so make sure it is correct on the remote end | |
13702 | first. */ | |
13703 | if (type != tfind_number) | |
13704 | set_remote_traceframe (); | |
13705 | ||
8d64371b | 13706 | p = rs->buf.data (); |
35b1e5cc SS |
13707 | strcpy (p, "QTFrame:"); |
13708 | p = strchr (p, '\0'); | |
13709 | switch (type) | |
13710 | { | |
13711 | case tfind_number: | |
bba74b36 | 13712 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13713 | break; |
13714 | case tfind_pc: | |
bba74b36 | 13715 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13716 | break; |
13717 | case tfind_tp: | |
bba74b36 | 13718 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13719 | break; |
13720 | case tfind_range: | |
bba74b36 YQ |
13721 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13722 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13723 | break; |
13724 | case tfind_outside: | |
bba74b36 YQ |
13725 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13726 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13727 | break; |
13728 | default: | |
9b20d036 | 13729 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13730 | } |
13731 | ||
13732 | putpkt (rs->buf); | |
b6bb3468 | 13733 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13734 | if (*reply == '\0') |
13735 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13736 | |
13737 | while (reply && *reply) | |
13738 | switch (*reply) | |
13739 | { | |
13740 | case 'F': | |
f197e0f1 VP |
13741 | p = ++reply; |
13742 | target_frameno = (int) strtol (p, &reply, 16); | |
13743 | if (reply == p) | |
13744 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13745 | /* Don't update our remote traceframe number cache on failure |
13746 | to select a remote traceframe. */ | |
f197e0f1 VP |
13747 | if (target_frameno == -1) |
13748 | return -1; | |
35b1e5cc SS |
13749 | break; |
13750 | case 'T': | |
f197e0f1 VP |
13751 | p = ++reply; |
13752 | target_tracept = (int) strtol (p, &reply, 16); | |
13753 | if (reply == p) | |
13754 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13755 | break; |
13756 | case 'O': /* "OK"? */ | |
13757 | if (reply[1] == 'K' && reply[2] == '\0') | |
13758 | reply += 2; | |
13759 | else | |
13760 | error (_("Bogus reply from target: %s"), reply); | |
13761 | break; | |
13762 | default: | |
13763 | error (_("Bogus reply from target: %s"), reply); | |
13764 | } | |
13765 | if (tpp) | |
13766 | *tpp = target_tracept; | |
e6e4e701 | 13767 | |
262e1174 | 13768 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13769 | return target_frameno; |
13770 | } | |
13771 | ||
57810aa7 | 13772 | bool |
f6ac5f3d | 13773 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13774 | { |
13775 | struct remote_state *rs = get_remote_state (); | |
13776 | char *reply; | |
13777 | ULONGEST uval; | |
13778 | ||
e6e4e701 PA |
13779 | set_remote_traceframe (); |
13780 | ||
8d64371b | 13781 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13782 | putpkt (rs->buf); |
b6bb3468 | 13783 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13784 | if (reply && *reply) |
13785 | { | |
13786 | if (*reply == 'V') | |
13787 | { | |
13788 | unpack_varlen_hex (reply + 1, &uval); | |
13789 | *val = (LONGEST) uval; | |
57810aa7 | 13790 | return true; |
35b1e5cc SS |
13791 | } |
13792 | } | |
57810aa7 | 13793 | return false; |
35b1e5cc SS |
13794 | } |
13795 | ||
f6ac5f3d PA |
13796 | int |
13797 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13798 | { |
13799 | struct remote_state *rs = get_remote_state (); | |
13800 | char *p, *reply; | |
13801 | ||
8d64371b | 13802 | p = rs->buf.data (); |
00bf0b85 SS |
13803 | strcpy (p, "QTSave:"); |
13804 | p += strlen (p); | |
8d64371b TT |
13805 | if ((p - rs->buf.data ()) + strlen (filename) * 2 |
13806 | >= get_remote_packet_size ()) | |
00bf0b85 | 13807 | error (_("Remote file name too long for trace save packet")); |
9f1b45b0 | 13808 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13809 | *p++ = '\0'; |
13810 | putpkt (rs->buf); | |
b6bb3468 | 13811 | reply = remote_get_noisy_reply (); |
d6c5869f | 13812 | if (*reply == '\0') |
ad91cd99 PA |
13813 | error (_("Target does not support this command.")); |
13814 | if (strcmp (reply, "OK") != 0) | |
13815 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13816 | return 0; |
13817 | } | |
13818 | ||
13819 | /* This is basically a memory transfer, but needs to be its own packet | |
13820 | because we don't know how the target actually organizes its trace | |
13821 | memory, plus we want to be able to ask for as much as possible, but | |
13822 | not be unhappy if we don't get as much as we ask for. */ | |
13823 | ||
f6ac5f3d PA |
13824 | LONGEST |
13825 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13826 | { |
13827 | struct remote_state *rs = get_remote_state (); | |
13828 | char *reply; | |
13829 | char *p; | |
13830 | int rslt; | |
13831 | ||
8d64371b | 13832 | p = rs->buf.data (); |
00bf0b85 SS |
13833 | strcpy (p, "qTBuffer:"); |
13834 | p += strlen (p); | |
13835 | p += hexnumstr (p, offset); | |
13836 | *p++ = ','; | |
13837 | p += hexnumstr (p, len); | |
13838 | *p++ = '\0'; | |
13839 | ||
13840 | putpkt (rs->buf); | |
b6bb3468 | 13841 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13842 | if (reply && *reply) |
13843 | { | |
13844 | /* 'l' by itself means we're at the end of the buffer and | |
13845 | there is nothing more to get. */ | |
13846 | if (*reply == 'l') | |
13847 | return 0; | |
13848 | ||
13849 | /* Convert the reply into binary. Limit the number of bytes to | |
13850 | convert according to our passed-in buffer size, rather than | |
13851 | what was returned in the packet; if the target is | |
13852 | unexpectedly generous and gives us a bigger reply than we | |
13853 | asked for, we don't want to crash. */ | |
b6bb3468 | 13854 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13855 | return rslt; |
13856 | } | |
13857 | ||
13858 | /* Something went wrong, flag as an error. */ | |
13859 | return -1; | |
13860 | } | |
13861 | ||
f6ac5f3d PA |
13862 | void |
13863 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13864 | { |
13865 | struct remote_state *rs = get_remote_state (); | |
13866 | ||
4082afcc | 13867 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13868 | { |
ad91cd99 PA |
13869 | char *reply; |
13870 | ||
8d64371b TT |
13871 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13872 | "QTDisconnected:%x", val); | |
33da3f1c | 13873 | putpkt (rs->buf); |
b6bb3468 | 13874 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13875 | if (*reply == '\0') |
33da3f1c | 13876 | error (_("Target does not support this command.")); |
ad91cd99 | 13877 | if (strcmp (reply, "OK") != 0) |
dda83cd7 | 13878 | error (_("Bogus reply from target: %s"), reply); |
33da3f1c SS |
13879 | } |
13880 | else if (val) | |
13881 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13882 | } |
13883 | ||
f6ac5f3d PA |
13884 | int |
13885 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c | 13886 | { |
5b6d1e4f | 13887 | thread_info *info = find_thread_ptid (this, ptid); |
a744cf53 | 13888 | |
7aabaf9d SM |
13889 | if (info != NULL && info->priv != NULL) |
13890 | return get_remote_thread_info (info)->core; | |
13891 | ||
dc146f7c VP |
13892 | return -1; |
13893 | } | |
13894 | ||
f6ac5f3d PA |
13895 | void |
13896 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13897 | { |
13898 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13899 | char *reply; |
4daf5ac0 | 13900 | |
8d64371b TT |
13901 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13902 | "QTBuffer:circular:%x", val); | |
4daf5ac0 | 13903 | putpkt (rs->buf); |
b6bb3468 | 13904 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13905 | if (*reply == '\0') |
4daf5ac0 | 13906 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13907 | if (strcmp (reply, "OK") != 0) |
13908 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13909 | } |
13910 | ||
f6ac5f3d PA |
13911 | traceframe_info_up |
13912 | remote_target::traceframe_info () | |
b3b9301e | 13913 | { |
9018be22 | 13914 | gdb::optional<gdb::char_vector> text |
328d42d8 SM |
13915 | = target_read_stralloc (current_inferior ()->top_target (), |
13916 | TARGET_OBJECT_TRACEFRAME_INFO, | |
b7b030ad | 13917 | NULL); |
9018be22 SM |
13918 | if (text) |
13919 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13920 | |
13921 | return NULL; | |
13922 | } | |
13923 | ||
405f8e94 SS |
13924 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13925 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13926 | if the packet is not supported, and 0 if the minimum instruction | |
13927 | length is unknown. */ | |
13928 | ||
f6ac5f3d PA |
13929 | int |
13930 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13931 | { |
13932 | struct remote_state *rs = get_remote_state (); | |
13933 | char *reply; | |
13934 | ||
e886a173 PA |
13935 | /* If we're not debugging a process yet, the IPA can't be |
13936 | loaded. */ | |
55f6301a | 13937 | if (!target_has_execution ()) |
e886a173 PA |
13938 | return 0; |
13939 | ||
13940 | /* Make sure the remote is pointing at the right process. */ | |
13941 | set_general_process (); | |
13942 | ||
8d64371b | 13943 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13944 | putpkt (rs->buf); |
b6bb3468 | 13945 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13946 | if (*reply == '\0') |
13947 | return -1; | |
13948 | else | |
13949 | { | |
13950 | ULONGEST min_insn_len; | |
13951 | ||
13952 | unpack_varlen_hex (reply, &min_insn_len); | |
13953 | ||
13954 | return (int) min_insn_len; | |
13955 | } | |
13956 | } | |
13957 | ||
f6ac5f3d PA |
13958 | void |
13959 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13960 | { |
4082afcc | 13961 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13962 | { |
13963 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13964 | char *buf = rs->buf.data (); |
13965 | char *endbuf = buf + get_remote_packet_size (); | |
f6f899bf HAQ |
13966 | enum packet_result result; |
13967 | ||
13968 | gdb_assert (val >= 0 || val == -1); | |
13969 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13970 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13971 | if (val < 0) | |
13972 | { | |
13973 | *buf++ = '-'; | |
dda83cd7 | 13974 | buf += hexnumstr (buf, (ULONGEST) -val); |
f6f899bf HAQ |
13975 | } |
13976 | else | |
13977 | buf += hexnumstr (buf, (ULONGEST) val); | |
13978 | ||
13979 | putpkt (rs->buf); | |
b6bb3468 | 13980 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13981 | result = packet_ok (rs->buf, |
13982 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13983 | ||
13984 | if (result != PACKET_OK) | |
8d64371b | 13985 | warning (_("Bogus reply from target: %s"), rs->buf.data ()); |
f6f899bf HAQ |
13986 | } |
13987 | } | |
13988 | ||
57810aa7 | 13989 | bool |
f6ac5f3d PA |
13990 | remote_target::set_trace_notes (const char *user, const char *notes, |
13991 | const char *stop_notes) | |
f196051f SS |
13992 | { |
13993 | struct remote_state *rs = get_remote_state (); | |
13994 | char *reply; | |
8d64371b TT |
13995 | char *buf = rs->buf.data (); |
13996 | char *endbuf = buf + get_remote_packet_size (); | |
f196051f SS |
13997 | int nbytes; |
13998 | ||
13999 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
14000 | if (user) | |
14001 | { | |
14002 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 14003 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
14004 | buf += 2 * nbytes; |
14005 | *buf++ = ';'; | |
14006 | } | |
14007 | if (notes) | |
14008 | { | |
14009 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 14010 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
14011 | buf += 2 * nbytes; |
14012 | *buf++ = ';'; | |
14013 | } | |
14014 | if (stop_notes) | |
14015 | { | |
14016 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 14017 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
14018 | buf += 2 * nbytes; |
14019 | *buf++ = ';'; | |
14020 | } | |
14021 | /* Ensure the buffer is terminated. */ | |
14022 | *buf = '\0'; | |
14023 | ||
14024 | putpkt (rs->buf); | |
b6bb3468 | 14025 | reply = remote_get_noisy_reply (); |
f196051f | 14026 | if (*reply == '\0') |
57810aa7 | 14027 | return false; |
f196051f SS |
14028 | |
14029 | if (strcmp (reply, "OK") != 0) | |
14030 | error (_("Bogus reply from target: %s"), reply); | |
14031 | ||
57810aa7 | 14032 | return true; |
f196051f SS |
14033 | } |
14034 | ||
57810aa7 PA |
14035 | bool |
14036 | remote_target::use_agent (bool use) | |
d1feda86 | 14037 | { |
4082afcc | 14038 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
14039 | { |
14040 | struct remote_state *rs = get_remote_state (); | |
14041 | ||
14042 | /* If the stub supports QAgent. */ | |
8d64371b | 14043 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 | 14044 | putpkt (rs->buf); |
8d64371b | 14045 | getpkt (&rs->buf, 0); |
d1feda86 | 14046 | |
8d64371b | 14047 | if (strcmp (rs->buf.data (), "OK") == 0) |
d1feda86 | 14048 | { |
f6ac5f3d | 14049 | ::use_agent = use; |
57810aa7 | 14050 | return true; |
d1feda86 YQ |
14051 | } |
14052 | } | |
14053 | ||
57810aa7 | 14054 | return false; |
d1feda86 YQ |
14055 | } |
14056 | ||
57810aa7 | 14057 | bool |
f6ac5f3d | 14058 | remote_target::can_use_agent () |
d1feda86 | 14059 | { |
4082afcc | 14060 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
14061 | } |
14062 | ||
9accd112 MM |
14063 | struct btrace_target_info |
14064 | { | |
14065 | /* The ptid of the traced thread. */ | |
14066 | ptid_t ptid; | |
f4abbc16 MM |
14067 | |
14068 | /* The obtained branch trace configuration. */ | |
14069 | struct btrace_config conf; | |
9accd112 MM |
14070 | }; |
14071 | ||
f4abbc16 MM |
14072 | /* Reset our idea of our target's btrace configuration. */ |
14073 | ||
14074 | static void | |
6b8edb51 | 14075 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 14076 | { |
f4abbc16 MM |
14077 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
14078 | } | |
14079 | ||
f4abbc16 MM |
14080 | /* Synchronize the configuration with the target. */ |
14081 | ||
6b8edb51 PA |
14082 | void |
14083 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 14084 | { |
d33501a5 MM |
14085 | struct packet_config *packet; |
14086 | struct remote_state *rs; | |
14087 | char *buf, *pos, *endbuf; | |
14088 | ||
14089 | rs = get_remote_state (); | |
8d64371b | 14090 | buf = rs->buf.data (); |
d33501a5 MM |
14091 | endbuf = buf + get_remote_packet_size (); |
14092 | ||
14093 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
14094 | if (packet_config_support (packet) == PACKET_ENABLE | |
14095 | && conf->bts.size != rs->btrace_config.bts.size) | |
14096 | { | |
14097 | pos = buf; | |
14098 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
dda83cd7 | 14099 | conf->bts.size); |
d33501a5 MM |
14100 | |
14101 | putpkt (buf); | |
8d64371b | 14102 | getpkt (&rs->buf, 0); |
d33501a5 MM |
14103 | |
14104 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
14105 | { | |
14106 | if (buf[0] == 'E' && buf[1] == '.') | |
14107 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
14108 | else | |
14109 | error (_("Failed to configure the BTS buffer size.")); | |
14110 | } | |
14111 | ||
14112 | rs->btrace_config.bts.size = conf->bts.size; | |
14113 | } | |
b20a6524 MM |
14114 | |
14115 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
14116 | if (packet_config_support (packet) == PACKET_ENABLE | |
14117 | && conf->pt.size != rs->btrace_config.pt.size) | |
14118 | { | |
14119 | pos = buf; | |
14120 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
dda83cd7 | 14121 | conf->pt.size); |
b20a6524 MM |
14122 | |
14123 | putpkt (buf); | |
8d64371b | 14124 | getpkt (&rs->buf, 0); |
b20a6524 MM |
14125 | |
14126 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
14127 | { | |
14128 | if (buf[0] == 'E' && buf[1] == '.') | |
14129 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
14130 | else | |
14131 | error (_("Failed to configure the trace buffer size.")); | |
14132 | } | |
14133 | ||
14134 | rs->btrace_config.pt.size = conf->pt.size; | |
14135 | } | |
f4abbc16 MM |
14136 | } |
14137 | ||
14138 | /* Read the current thread's btrace configuration from the target and | |
14139 | store it into CONF. */ | |
14140 | ||
14141 | static void | |
14142 | btrace_read_config (struct btrace_config *conf) | |
14143 | { | |
9018be22 | 14144 | gdb::optional<gdb::char_vector> xml |
328d42d8 SM |
14145 | = target_read_stralloc (current_inferior ()->top_target (), |
14146 | TARGET_OBJECT_BTRACE_CONF, ""); | |
9018be22 SM |
14147 | if (xml) |
14148 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
14149 | } |
14150 | ||
c0272db5 TW |
14151 | /* Maybe reopen target btrace. */ |
14152 | ||
6b8edb51 PA |
14153 | void |
14154 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
14155 | { |
14156 | struct remote_state *rs = get_remote_state (); | |
c0272db5 | 14157 | int btrace_target_pushed = 0; |
15766370 | 14158 | #if !defined (HAVE_LIBIPT) |
c0272db5 | 14159 | int warned = 0; |
15766370 | 14160 | #endif |
c0272db5 | 14161 | |
aedbe3bb CM |
14162 | /* Don't bother walking the entirety of the remote thread list when |
14163 | we know the feature isn't supported by the remote. */ | |
14164 | if (packet_support (PACKET_qXfer_btrace_conf) != PACKET_ENABLE) | |
14165 | return; | |
14166 | ||
5ed8105e PA |
14167 | scoped_restore_current_thread restore_thread; |
14168 | ||
5b6d1e4f | 14169 | for (thread_info *tp : all_non_exited_threads (this)) |
c0272db5 TW |
14170 | { |
14171 | set_general_thread (tp->ptid); | |
14172 | ||
14173 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
14174 | btrace_read_config (&rs->btrace_config); | |
14175 | ||
14176 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
14177 | continue; | |
14178 | ||
14179 | #if !defined (HAVE_LIBIPT) | |
14180 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
14181 | { | |
14182 | if (!warned) | |
14183 | { | |
14184 | warned = 1; | |
c4e12631 MM |
14185 | warning (_("Target is recording using Intel Processor Trace " |
14186 | "but support was disabled at compile time.")); | |
c0272db5 TW |
14187 | } |
14188 | ||
14189 | continue; | |
14190 | } | |
14191 | #endif /* !defined (HAVE_LIBIPT) */ | |
14192 | ||
14193 | /* Push target, once, but before anything else happens. This way our | |
14194 | changes to the threads will be cleaned up by unpushing the target | |
14195 | in case btrace_read_config () throws. */ | |
14196 | if (!btrace_target_pushed) | |
14197 | { | |
14198 | btrace_target_pushed = 1; | |
14199 | record_btrace_push_target (); | |
14200 | printf_filtered (_("Target is recording using %s.\n"), | |
14201 | btrace_format_string (rs->btrace_config.format)); | |
14202 | } | |
14203 | ||
14204 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
14205 | tp->btrace.target->ptid = tp->ptid; | |
14206 | tp->btrace.target->conf = rs->btrace_config; | |
14207 | } | |
c0272db5 TW |
14208 | } |
14209 | ||
9accd112 MM |
14210 | /* Enable branch tracing. */ |
14211 | ||
f6ac5f3d PA |
14212 | struct btrace_target_info * |
14213 | remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf) | |
9accd112 MM |
14214 | { |
14215 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 14216 | struct packet_config *packet = NULL; |
9accd112 | 14217 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
14218 | char *buf = rs->buf.data (); |
14219 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14220 | |
b20a6524 MM |
14221 | switch (conf->format) |
14222 | { | |
14223 | case BTRACE_FORMAT_BTS: | |
14224 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
14225 | break; | |
14226 | ||
14227 | case BTRACE_FORMAT_PT: | |
14228 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
14229 | break; | |
14230 | } | |
14231 | ||
14232 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
14233 | error (_("Target does not support branch tracing.")); |
14234 | ||
f4abbc16 MM |
14235 | btrace_sync_conf (conf); |
14236 | ||
9accd112 MM |
14237 | set_general_thread (ptid); |
14238 | ||
14239 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
14240 | putpkt (rs->buf); | |
8d64371b | 14241 | getpkt (&rs->buf, 0); |
9accd112 MM |
14242 | |
14243 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
14244 | { | |
14245 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14246 | error (_("Could not enable branch tracing for %s: %s"), | |
a068643d | 14247 | target_pid_to_str (ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14248 | else |
14249 | error (_("Could not enable branch tracing for %s."), | |
a068643d | 14250 | target_pid_to_str (ptid).c_str ()); |
9accd112 MM |
14251 | } |
14252 | ||
8d749320 | 14253 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
14254 | tinfo->ptid = ptid; |
14255 | ||
f4abbc16 MM |
14256 | /* If we fail to read the configuration, we lose some information, but the |
14257 | tracing itself is not impacted. */ | |
a70b8144 | 14258 | try |
492d29ea PA |
14259 | { |
14260 | btrace_read_config (&tinfo->conf); | |
14261 | } | |
230d2906 | 14262 | catch (const gdb_exception_error &err) |
492d29ea PA |
14263 | { |
14264 | if (err.message != NULL) | |
3d6e9d23 | 14265 | warning ("%s", err.what ()); |
492d29ea | 14266 | } |
f4abbc16 | 14267 | |
9accd112 MM |
14268 | return tinfo; |
14269 | } | |
14270 | ||
14271 | /* Disable branch tracing. */ | |
14272 | ||
f6ac5f3d PA |
14273 | void |
14274 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14275 | { |
14276 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
14277 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
14278 | char *buf = rs->buf.data (); |
14279 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14280 | |
4082afcc | 14281 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14282 | error (_("Target does not support branch tracing.")); |
14283 | ||
14284 | set_general_thread (tinfo->ptid); | |
14285 | ||
14286 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
14287 | putpkt (rs->buf); | |
8d64371b | 14288 | getpkt (&rs->buf, 0); |
9accd112 MM |
14289 | |
14290 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
14291 | { | |
14292 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14293 | error (_("Could not disable branch tracing for %s: %s"), | |
a068643d | 14294 | target_pid_to_str (tinfo->ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14295 | else |
14296 | error (_("Could not disable branch tracing for %s."), | |
a068643d | 14297 | target_pid_to_str (tinfo->ptid).c_str ()); |
9accd112 MM |
14298 | } |
14299 | ||
14300 | xfree (tinfo); | |
14301 | } | |
14302 | ||
14303 | /* Teardown branch tracing. */ | |
14304 | ||
f6ac5f3d PA |
14305 | void |
14306 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14307 | { |
14308 | /* We must not talk to the target during teardown. */ | |
14309 | xfree (tinfo); | |
14310 | } | |
14311 | ||
14312 | /* Read the branch trace. */ | |
14313 | ||
f6ac5f3d PA |
14314 | enum btrace_error |
14315 | remote_target::read_btrace (struct btrace_data *btrace, | |
14316 | struct btrace_target_info *tinfo, | |
14317 | enum btrace_read_type type) | |
9accd112 MM |
14318 | { |
14319 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 14320 | const char *annex; |
9accd112 | 14321 | |
4082afcc | 14322 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14323 | error (_("Target does not support branch tracing.")); |
14324 | ||
14325 | #if !defined(HAVE_LIBEXPAT) | |
14326 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
14327 | #endif | |
14328 | ||
14329 | switch (type) | |
14330 | { | |
864089d2 | 14331 | case BTRACE_READ_ALL: |
9accd112 MM |
14332 | annex = "all"; |
14333 | break; | |
864089d2 | 14334 | case BTRACE_READ_NEW: |
9accd112 MM |
14335 | annex = "new"; |
14336 | break; | |
969c39fb MM |
14337 | case BTRACE_READ_DELTA: |
14338 | annex = "delta"; | |
14339 | break; | |
9accd112 MM |
14340 | default: |
14341 | internal_error (__FILE__, __LINE__, | |
14342 | _("Bad branch tracing read type: %u."), | |
14343 | (unsigned int) type); | |
14344 | } | |
14345 | ||
9018be22 | 14346 | gdb::optional<gdb::char_vector> xml |
328d42d8 SM |
14347 | = target_read_stralloc (current_inferior ()->top_target (), |
14348 | TARGET_OBJECT_BTRACE, annex); | |
9018be22 | 14349 | if (!xml) |
969c39fb | 14350 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 14351 | |
9018be22 | 14352 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 14353 | |
969c39fb | 14354 | return BTRACE_ERR_NONE; |
9accd112 MM |
14355 | } |
14356 | ||
f6ac5f3d PA |
14357 | const struct btrace_config * |
14358 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
14359 | { |
14360 | return &tinfo->conf; | |
14361 | } | |
14362 | ||
57810aa7 | 14363 | bool |
f6ac5f3d | 14364 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 14365 | { |
4082afcc PA |
14366 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
14367 | == PACKET_ENABLE); | |
ced63ec0 GB |
14368 | } |
14369 | ||
9dd130a0 TT |
14370 | /* Implementation of to_load. */ |
14371 | ||
f6ac5f3d PA |
14372 | void |
14373 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
14374 | { |
14375 | generic_load (name, from_tty); | |
14376 | } | |
14377 | ||
c78fa86a GB |
14378 | /* Accepts an integer PID; returns a string representing a file that |
14379 | can be opened on the remote side to get the symbols for the child | |
14380 | process. Returns NULL if the operation is not supported. */ | |
14381 | ||
f6ac5f3d PA |
14382 | char * |
14383 | remote_target::pid_to_exec_file (int pid) | |
c78fa86a | 14384 | { |
9018be22 | 14385 | static gdb::optional<gdb::char_vector> filename; |
835205d0 | 14386 | char *annex = NULL; |
c78fa86a GB |
14387 | |
14388 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
14389 | return NULL; | |
14390 | ||
5b6d1e4f | 14391 | inferior *inf = find_inferior_pid (this, pid); |
835205d0 GB |
14392 | if (inf == NULL) |
14393 | internal_error (__FILE__, __LINE__, | |
14394 | _("not currently attached to process %d"), pid); | |
14395 | ||
14396 | if (!inf->fake_pid_p) | |
14397 | { | |
14398 | const int annex_size = 9; | |
14399 | ||
224c3ddb | 14400 | annex = (char *) alloca (annex_size); |
835205d0 GB |
14401 | xsnprintf (annex, annex_size, "%x", pid); |
14402 | } | |
14403 | ||
328d42d8 | 14404 | filename = target_read_stralloc (current_inferior ()->top_target (), |
c78fa86a GB |
14405 | TARGET_OBJECT_EXEC_FILE, annex); |
14406 | ||
9018be22 | 14407 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
14408 | } |
14409 | ||
750ce8d1 YQ |
14410 | /* Implement the to_can_do_single_step target_ops method. */ |
14411 | ||
f6ac5f3d PA |
14412 | int |
14413 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
14414 | { |
14415 | /* We can only tell whether target supports single step or not by | |
14416 | supported s and S vCont actions if the stub supports vContSupported | |
14417 | feature. If the stub doesn't support vContSupported feature, | |
14418 | we have conservatively to think target doesn't supports single | |
14419 | step. */ | |
14420 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
14421 | { | |
14422 | struct remote_state *rs = get_remote_state (); | |
14423 | ||
14424 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
6b8edb51 | 14425 | remote_vcont_probe (); |
750ce8d1 YQ |
14426 | |
14427 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
14428 | } | |
14429 | else | |
14430 | return 0; | |
14431 | } | |
14432 | ||
3a00c802 PA |
14433 | /* Implementation of the to_execution_direction method for the remote |
14434 | target. */ | |
14435 | ||
f6ac5f3d PA |
14436 | enum exec_direction_kind |
14437 | remote_target::execution_direction () | |
3a00c802 PA |
14438 | { |
14439 | struct remote_state *rs = get_remote_state (); | |
14440 | ||
14441 | return rs->last_resume_exec_dir; | |
14442 | } | |
14443 | ||
f6327dcb KB |
14444 | /* Return pointer to the thread_info struct which corresponds to |
14445 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
14446 | ||
f6ac5f3d PA |
14447 | thread_info * |
14448 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
14449 | int handle_len, | |
14450 | inferior *inf) | |
f6327dcb | 14451 | { |
5b6d1e4f | 14452 | for (thread_info *tp : all_non_exited_threads (this)) |
f6327dcb | 14453 | { |
7aabaf9d | 14454 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
14455 | |
14456 | if (tp->inf == inf && priv != NULL) | |
dda83cd7 | 14457 | { |
7aabaf9d | 14458 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 14459 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
dda83cd7 | 14460 | handle_len, priv->thread_handle.size ()); |
7aabaf9d | 14461 | if (memcmp (thread_handle, priv->thread_handle.data (), |
dda83cd7 | 14462 | handle_len) == 0) |
f6327dcb KB |
14463 | return tp; |
14464 | } | |
14465 | } | |
14466 | ||
14467 | return NULL; | |
14468 | } | |
14469 | ||
3d6c6204 KB |
14470 | gdb::byte_vector |
14471 | remote_target::thread_info_to_thread_handle (struct thread_info *tp) | |
14472 | { | |
14473 | remote_thread_info *priv = get_remote_thread_info (tp); | |
14474 | return priv->thread_handle; | |
14475 | } | |
14476 | ||
57810aa7 | 14477 | bool |
f6ac5f3d | 14478 | remote_target::can_async_p () |
6426a772 | 14479 | { |
fce6cd34 AB |
14480 | /* This flag should be checked in the common target.c code. */ |
14481 | gdb_assert (target_async_permitted); | |
75c99385 | 14482 | |
fce6cd34 AB |
14483 | /* We're async whenever the serial device can. */ |
14484 | struct remote_state *rs = get_remote_state (); | |
5d93a237 | 14485 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
14486 | } |
14487 | ||
57810aa7 | 14488 | bool |
f6ac5f3d | 14489 | remote_target::is_async_p () |
6426a772 | 14490 | { |
23860348 | 14491 | /* We're async whenever the serial device is. */ |
7054fa5b | 14492 | struct remote_state *rs = get_remote_state (); |
5d93a237 | 14493 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
14494 | } |
14495 | ||
2acceee2 JM |
14496 | /* Pass the SERIAL event on and up to the client. One day this code |
14497 | will be able to delay notifying the client of an event until the | |
23860348 | 14498 | point where an entire packet has been received. */ |
2acceee2 | 14499 | |
2acceee2 JM |
14500 | static serial_event_ftype remote_async_serial_handler; |
14501 | ||
6426a772 | 14502 | static void |
819cc324 | 14503 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14504 | { |
2acceee2 JM |
14505 | /* Don't propogate error information up to the client. Instead let |
14506 | the client find out about the error by querying the target. */ | |
b1a35af2 | 14507 | inferior_event_handler (INF_REG_EVENT); |
2acceee2 JM |
14508 | } |
14509 | ||
74531fed PA |
14510 | static void |
14511 | remote_async_inferior_event_handler (gdb_client_data data) | |
14512 | { | |
6b36ddeb | 14513 | inferior_event_handler (INF_REG_EVENT); |
74531fed PA |
14514 | } |
14515 | ||
5b6d1e4f PA |
14516 | int |
14517 | remote_target::async_wait_fd () | |
14518 | { | |
14519 | struct remote_state *rs = get_remote_state (); | |
14520 | return rs->remote_desc->fd; | |
14521 | } | |
14522 | ||
f6ac5f3d PA |
14523 | void |
14524 | remote_target::async (int enable) | |
2acceee2 | 14525 | { |
5d93a237 TT |
14526 | struct remote_state *rs = get_remote_state (); |
14527 | ||
6a3753b3 | 14528 | if (enable) |
2acceee2 | 14529 | { |
88b496c3 | 14530 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14531 | |
14532 | /* If there are pending events in the stop reply queue tell the | |
14533 | event loop to process them. */ | |
953edf2b | 14534 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 14535 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14536 | /* For simplicity, below we clear the pending events token |
14537 | without remembering whether it is marked, so here we always | |
14538 | mark it. If there's actually no pending notification to | |
14539 | process, this ends up being a no-op (other than a spurious | |
14540 | event-loop wakeup). */ | |
14541 | if (target_is_non_stop_p ()) | |
14542 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14543 | } |
14544 | else | |
b7d2e916 PA |
14545 | { |
14546 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14547 | /* If the core is disabling async, it doesn't want to be |
14548 | disturbed with target events. Clear all async event sources | |
14549 | too. */ | |
6b8edb51 | 14550 | clear_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14551 | if (target_is_non_stop_p ()) |
14552 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14553 | } |
6426a772 JM |
14554 | } |
14555 | ||
65706a29 PA |
14556 | /* Implementation of the to_thread_events method. */ |
14557 | ||
f6ac5f3d PA |
14558 | void |
14559 | remote_target::thread_events (int enable) | |
65706a29 PA |
14560 | { |
14561 | struct remote_state *rs = get_remote_state (); | |
14562 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
14563 | |
14564 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
14565 | return; | |
14566 | ||
8d64371b | 14567 | xsnprintf (rs->buf.data (), size, "QThreadEvents:%x", enable ? 1 : 0); |
65706a29 | 14568 | putpkt (rs->buf); |
8d64371b | 14569 | getpkt (&rs->buf, 0); |
65706a29 PA |
14570 | |
14571 | switch (packet_ok (rs->buf, | |
14572 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
14573 | { | |
14574 | case PACKET_OK: | |
8d64371b TT |
14575 | if (strcmp (rs->buf.data (), "OK") != 0) |
14576 | error (_("Remote refused setting thread events: %s"), rs->buf.data ()); | |
65706a29 PA |
14577 | break; |
14578 | case PACKET_ERROR: | |
8d64371b | 14579 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
65706a29 PA |
14580 | break; |
14581 | case PACKET_UNKNOWN: | |
14582 | break; | |
14583 | } | |
14584 | } | |
14585 | ||
d471ea57 | 14586 | static void |
981a3fb3 | 14587 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14588 | { |
37a105a1 | 14589 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14590 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14591 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14592 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14593 | |
2e783024 | 14594 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14595 | for (; list != NULL; list = list->next) |
14596 | if (strcmp (list->name, "Z-packet") == 0) | |
14597 | continue; | |
427c3a89 DJ |
14598 | else if (list->type == not_set_cmd) |
14599 | /* Alias commands are exactly like the original, except they | |
14600 | don't have the normal type. */ | |
14601 | continue; | |
14602 | else | |
37a105a1 | 14603 | { |
2e783024 | 14604 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14605 | |
112e8700 SM |
14606 | uiout->field_string ("name", list->name); |
14607 | uiout->text (": "); | |
427c3a89 | 14608 | if (list->type == show_cmd) |
f5c4fcd9 | 14609 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14610 | else |
14611 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 14612 | } |
d471ea57 | 14613 | } |
5a2468f5 | 14614 | |
0f71a2f6 | 14615 | |
23860348 | 14616 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
14617 | static void |
14618 | remote_new_objfile (struct objfile *objfile) | |
14619 | { | |
6b8edb51 | 14620 | remote_target *remote = get_current_remote_target (); |
5d93a237 | 14621 | |
122373f7 SM |
14622 | /* First, check whether the current inferior's process target is a remote |
14623 | target. */ | |
14624 | if (remote == nullptr) | |
14625 | return; | |
14626 | ||
14627 | /* When we are attaching or handling a fork child and the shared library | |
14628 | subsystem reads the list of loaded libraries, we receive new objfile | |
14629 | events in between each found library. The libraries are read in an | |
14630 | undefined order, so if we gave the remote side a chance to look up | |
14631 | symbols between each objfile, we might give it an inconsistent picture | |
14632 | of the inferior. It could appear that a library A appears loaded but | |
14633 | a library B does not, even though library A requires library B. That | |
14634 | would present a state that couldn't normally exist in the inferior. | |
14635 | ||
14636 | So, skip these events, we'll give the remote a chance to look up symbols | |
14637 | once all the loaded libraries and their symbols are known to GDB. */ | |
d424629d JB |
14638 | if (current_inferior ()->in_initial_library_scan) |
14639 | return; | |
122373f7 SM |
14640 | |
14641 | remote->remote_check_symbols (); | |
dc8acb97 MS |
14642 | } |
14643 | ||
00bf0b85 SS |
14644 | /* Pull all the tracepoints defined on the target and create local |
14645 | data structures representing them. We don't want to create real | |
14646 | tracepoints yet, we don't want to mess up the user's existing | |
14647 | collection. */ | |
14648 | ||
f6ac5f3d PA |
14649 | int |
14650 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14651 | { |
00bf0b85 SS |
14652 | struct remote_state *rs = get_remote_state (); |
14653 | char *p; | |
d5551862 | 14654 | |
00bf0b85 SS |
14655 | /* Ask for a first packet of tracepoint definition. */ |
14656 | putpkt ("qTfP"); | |
8d64371b TT |
14657 | getpkt (&rs->buf, 0); |
14658 | p = rs->buf.data (); | |
00bf0b85 | 14659 | while (*p && *p != 'l') |
d5551862 | 14660 | { |
00bf0b85 SS |
14661 | parse_tracepoint_definition (p, utpp); |
14662 | /* Ask for another packet of tracepoint definition. */ | |
14663 | putpkt ("qTsP"); | |
8d64371b TT |
14664 | getpkt (&rs->buf, 0); |
14665 | p = rs->buf.data (); | |
d5551862 | 14666 | } |
00bf0b85 | 14667 | return 0; |
d5551862 SS |
14668 | } |
14669 | ||
f6ac5f3d PA |
14670 | int |
14671 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14672 | { |
00bf0b85 | 14673 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14674 | char *p; |
d5551862 | 14675 | |
00bf0b85 SS |
14676 | /* Ask for a first packet of variable definition. */ |
14677 | putpkt ("qTfV"); | |
8d64371b TT |
14678 | getpkt (&rs->buf, 0); |
14679 | p = rs->buf.data (); | |
00bf0b85 | 14680 | while (*p && *p != 'l') |
d5551862 | 14681 | { |
00bf0b85 SS |
14682 | parse_tsv_definition (p, utsvp); |
14683 | /* Ask for another packet of variable definition. */ | |
14684 | putpkt ("qTsV"); | |
8d64371b TT |
14685 | getpkt (&rs->buf, 0); |
14686 | p = rs->buf.data (); | |
d5551862 | 14687 | } |
00bf0b85 | 14688 | return 0; |
d5551862 SS |
14689 | } |
14690 | ||
c1e36e3e PA |
14691 | /* The "set/show range-stepping" show hook. */ |
14692 | ||
14693 | static void | |
14694 | show_range_stepping (struct ui_file *file, int from_tty, | |
14695 | struct cmd_list_element *c, | |
14696 | const char *value) | |
14697 | { | |
14698 | fprintf_filtered (file, | |
14699 | _("Debugger's willingness to use range stepping " | |
14700 | "is %s.\n"), value); | |
14701 | } | |
14702 | ||
6b8edb51 PA |
14703 | /* Return true if the vCont;r action is supported by the remote |
14704 | stub. */ | |
14705 | ||
14706 | bool | |
14707 | remote_target::vcont_r_supported () | |
14708 | { | |
14709 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
14710 | remote_vcont_probe (); | |
14711 | ||
14712 | return (packet_support (PACKET_vCont) == PACKET_ENABLE | |
14713 | && get_remote_state ()->supports_vCont.r); | |
14714 | } | |
14715 | ||
c1e36e3e PA |
14716 | /* The "set/show range-stepping" set hook. */ |
14717 | ||
14718 | static void | |
eb4c3f4a | 14719 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14720 | struct cmd_list_element *c) |
14721 | { | |
6b8edb51 PA |
14722 | /* When enabling, check whether range stepping is actually supported |
14723 | by the target, and warn if not. */ | |
c1e36e3e PA |
14724 | if (use_range_stepping) |
14725 | { | |
6b8edb51 PA |
14726 | remote_target *remote = get_current_remote_target (); |
14727 | if (remote == NULL | |
14728 | || !remote->vcont_r_supported ()) | |
14729 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
14730 | } |
14731 | } | |
14732 | ||
baf2b57f SM |
14733 | static void |
14734 | show_remote_debug (struct ui_file *file, int from_tty, | |
14735 | struct cmd_list_element *c, const char *value) | |
14736 | { | |
14737 | fprintf_filtered (file, _("Debugging of remote protocol is %s.\n"), | |
14738 | value); | |
14739 | } | |
14740 | ||
14741 | static void | |
14742 | show_remote_timeout (struct ui_file *file, int from_tty, | |
14743 | struct cmd_list_element *c, const char *value) | |
14744 | { | |
14745 | fprintf_filtered (file, | |
14746 | _("Timeout limit to wait for target to respond is %s.\n"), | |
14747 | value); | |
14748 | } | |
14749 | ||
dbe692af LM |
14750 | /* Implement the "supports_memory_tagging" target_ops method. */ |
14751 | ||
14752 | bool | |
14753 | remote_target::supports_memory_tagging () | |
14754 | { | |
2c2e7f87 LM |
14755 | return remote_memory_tagging_p (); |
14756 | } | |
14757 | ||
14758 | /* Create the qMemTags packet given ADDRESS, LEN and TYPE. */ | |
14759 | ||
14760 | static void | |
14761 | create_fetch_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
14762 | size_t len, int type) | |
14763 | { | |
14764 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
14765 | ||
14766 | std::string request = string_printf ("qMemTags:%s,%s:%s", | |
14767 | phex_nz (address, addr_size), | |
14768 | phex_nz (len, sizeof (len)), | |
14769 | phex_nz (type, sizeof (type))); | |
14770 | ||
14771 | strcpy (packet.data (), request.c_str ()); | |
14772 | } | |
14773 | ||
14774 | /* Parse the qMemTags packet reply into TAGS. | |
14775 | ||
14776 | Return true if successful, false otherwise. */ | |
14777 | ||
14778 | static bool | |
14779 | parse_fetch_memtags_reply (const gdb::char_vector &reply, | |
14780 | gdb::byte_vector &tags) | |
14781 | { | |
14782 | if (reply.empty () || reply[0] == 'E' || reply[0] != 'm') | |
14783 | return false; | |
14784 | ||
14785 | /* Copy the tag data. */ | |
14786 | tags = hex2bin (reply.data () + 1); | |
14787 | ||
14788 | return true; | |
14789 | } | |
14790 | ||
14791 | /* Create the QMemTags packet given ADDRESS, LEN, TYPE and TAGS. */ | |
14792 | ||
14793 | static void | |
14794 | create_store_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
14795 | size_t len, int type, | |
14796 | const gdb::byte_vector &tags) | |
14797 | { | |
14798 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
14799 | ||
14800 | /* Put together the main packet, address and length. */ | |
14801 | std::string request = string_printf ("QMemTags:%s,%s:%s:", | |
14802 | phex_nz (address, addr_size), | |
14803 | phex_nz (len, sizeof (len)), | |
14804 | phex_nz (type, sizeof (type))); | |
14805 | request += bin2hex (tags.data (), tags.size ()); | |
14806 | ||
14807 | /* Check if we have exceeded the maximum packet size. */ | |
14808 | if (packet.size () < request.length ()) | |
14809 | error (_("Contents too big for packet QMemTags.")); | |
14810 | ||
14811 | strcpy (packet.data (), request.c_str ()); | |
dbe692af LM |
14812 | } |
14813 | ||
14814 | /* Implement the "fetch_memtags" target_ops method. */ | |
14815 | ||
14816 | bool | |
14817 | remote_target::fetch_memtags (CORE_ADDR address, size_t len, | |
14818 | gdb::byte_vector &tags, int type) | |
14819 | { | |
2c2e7f87 LM |
14820 | /* Make sure the qMemTags packet is supported. */ |
14821 | if (!remote_memory_tagging_p ()) | |
14822 | gdb_assert_not_reached ("remote fetch_memtags called with packet disabled"); | |
14823 | ||
14824 | struct remote_state *rs = get_remote_state (); | |
14825 | ||
14826 | create_fetch_memtags_request (rs->buf, address, len, type); | |
14827 | ||
14828 | putpkt (rs->buf); | |
14829 | getpkt (&rs->buf, 0); | |
14830 | ||
14831 | return parse_fetch_memtags_reply (rs->buf, tags); | |
dbe692af LM |
14832 | } |
14833 | ||
14834 | /* Implement the "store_memtags" target_ops method. */ | |
14835 | ||
14836 | bool | |
14837 | remote_target::store_memtags (CORE_ADDR address, size_t len, | |
14838 | const gdb::byte_vector &tags, int type) | |
14839 | { | |
2c2e7f87 LM |
14840 | /* Make sure the QMemTags packet is supported. */ |
14841 | if (!remote_memory_tagging_p ()) | |
14842 | gdb_assert_not_reached ("remote store_memtags called with packet disabled"); | |
14843 | ||
14844 | struct remote_state *rs = get_remote_state (); | |
14845 | ||
14846 | create_store_memtags_request (rs->buf, address, len, type, tags); | |
14847 | ||
14848 | putpkt (rs->buf); | |
14849 | getpkt (&rs->buf, 0); | |
14850 | ||
14851 | /* Verify if the request was successful. */ | |
14852 | return packet_check_result (rs->buf.data ()) == PACKET_OK; | |
dbe692af LM |
14853 | } |
14854 | ||
c39ebbf4 TV |
14855 | /* Return true if remote target T is non-stop. */ |
14856 | ||
14857 | bool | |
14858 | remote_target_is_non_stop_p (remote_target *t) | |
14859 | { | |
14860 | scoped_restore_current_thread restore_thread; | |
14861 | switch_to_target_no_thread (t); | |
14862 | ||
14863 | return target_is_non_stop_p (); | |
14864 | } | |
14865 | ||
754487e2 LM |
14866 | #if GDB_SELF_TEST |
14867 | ||
14868 | namespace selftests { | |
14869 | ||
14870 | static void | |
14871 | test_memory_tagging_functions () | |
14872 | { | |
14873 | remote_target remote; | |
14874 | ||
14875 | struct packet_config *config | |
14876 | = &remote_protocol_packets[PACKET_memory_tagging_feature]; | |
14877 | ||
14878 | scoped_restore restore_memtag_support_ | |
14879 | = make_scoped_restore (&config->support); | |
14880 | ||
14881 | /* Test memory tagging packet support. */ | |
14882 | config->support = PACKET_SUPPORT_UNKNOWN; | |
14883 | SELF_CHECK (remote.supports_memory_tagging () == false); | |
14884 | config->support = PACKET_DISABLE; | |
14885 | SELF_CHECK (remote.supports_memory_tagging () == false); | |
14886 | config->support = PACKET_ENABLE; | |
14887 | SELF_CHECK (remote.supports_memory_tagging () == true); | |
14888 | ||
14889 | /* Setup testing. */ | |
14890 | gdb::char_vector packet; | |
14891 | gdb::byte_vector tags, bv; | |
14892 | std::string expected, reply; | |
14893 | packet.resize (32000); | |
14894 | ||
14895 | /* Test creating a qMemTags request. */ | |
14896 | ||
14897 | expected = "qMemTags:0,0:0"; | |
14898 | create_fetch_memtags_request (packet, 0x0, 0x0, 0); | |
14899 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
14900 | ||
14901 | expected = "qMemTags:deadbeef,10:1"; | |
14902 | create_fetch_memtags_request (packet, 0xdeadbeef, 16, 1); | |
14903 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
14904 | ||
14905 | /* Test parsing a qMemTags reply. */ | |
14906 | ||
14907 | /* Error reply, tags vector unmodified. */ | |
14908 | reply = "E00"; | |
14909 | strcpy (packet.data (), reply.c_str ()); | |
14910 | tags.resize (0); | |
14911 | SELF_CHECK (parse_fetch_memtags_reply (packet, tags) == false); | |
14912 | SELF_CHECK (tags.size () == 0); | |
14913 | ||
14914 | /* Valid reply, tags vector updated. */ | |
14915 | tags.resize (0); | |
14916 | bv.resize (0); | |
14917 | ||
14918 | for (int i = 0; i < 5; i++) | |
14919 | bv.push_back (i); | |
14920 | ||
14921 | reply = "m" + bin2hex (bv.data (), bv.size ()); | |
14922 | strcpy (packet.data (), reply.c_str ()); | |
14923 | ||
14924 | SELF_CHECK (parse_fetch_memtags_reply (packet, tags) == true); | |
14925 | SELF_CHECK (tags.size () == 5); | |
14926 | ||
14927 | for (int i = 0; i < 5; i++) | |
14928 | SELF_CHECK (tags[i] == i); | |
14929 | ||
14930 | /* Test creating a QMemTags request. */ | |
14931 | ||
14932 | /* Empty tag data. */ | |
14933 | tags.resize (0); | |
14934 | expected = "QMemTags:0,0:0:"; | |
14935 | create_store_memtags_request (packet, 0x0, 0x0, 0, tags); | |
14936 | SELF_CHECK (memcmp (packet.data (), expected.c_str (), | |
14937 | expected.length ()) == 0); | |
14938 | ||
14939 | /* Non-empty tag data. */ | |
14940 | tags.resize (0); | |
14941 | for (int i = 0; i < 5; i++) | |
14942 | tags.push_back (i); | |
14943 | expected = "QMemTags:deadbeef,ff:1:0001020304"; | |
14944 | create_store_memtags_request (packet, 0xdeadbeef, 255, 1, tags); | |
14945 | SELF_CHECK (memcmp (packet.data (), expected.c_str (), | |
14946 | expected.length ()) == 0); | |
14947 | } | |
14948 | ||
14949 | } // namespace selftests | |
14950 | #endif /* GDB_SELF_TEST */ | |
14951 | ||
6c265988 | 14952 | void _initialize_remote (); |
c906108c | 14953 | void |
6c265988 | 14954 | _initialize_remote () |
c906108c | 14955 | { |
0f71a2f6 | 14956 | /* architecture specific data */ |
29709017 DJ |
14957 | remote_g_packet_data_handle = |
14958 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14959 | |
d9f719f1 PA |
14960 | add_target (remote_target_info, remote_target::open); |
14961 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 14962 | |
dc8acb97 | 14963 | /* Hook into new objfile notification. */ |
c90e7d63 | 14964 | gdb::observers::new_objfile.attach (remote_new_objfile, "remote"); |
dc8acb97 | 14965 | |
c906108c SS |
14966 | #if 0 |
14967 | init_remote_threadtests (); | |
14968 | #endif | |
14969 | ||
23860348 | 14970 | /* set/show remote ... */ |
d471ea57 | 14971 | |
0743fc83 | 14972 | add_basic_prefix_cmd ("remote", class_maintenance, _("\ |
590042fc | 14973 | Remote protocol specific variables.\n\ |
5a2468f5 | 14974 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14975 | the packets being used."), |
2f822da5 | 14976 | &remote_set_cmdlist, |
0743fc83 | 14977 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 14978 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
590042fc | 14979 | Remote protocol specific variables.\n\ |
5a2468f5 | 14980 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14981 | the packets being used."), |
2f822da5 | 14982 | &remote_show_cmdlist, |
23860348 | 14983 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14984 | |
1a966eab AC |
14985 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14986 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14987 | Argument is a single section name (default: all loaded sections).\n\ |
14988 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14989 | &cmdlist); |
14990 | ||
e5b176f2 | 14991 | add_cmd ("packet", class_maintenance, cli_packet_command, _("\ |
1a966eab | 14992 | Send an arbitrary packet to a remote target.\n\ |
c906108c SS |
14993 | maintenance packet TEXT\n\ |
14994 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14995 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14996 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14997 | terminating `#' character and checksum."), |
c906108c SS |
14998 | &maintenancelist); |
14999 | ||
9f260536 SM |
15000 | set_show_commands remotebreak_cmds |
15001 | = add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ | |
7915a72c AC |
15002 | Set whether to send break if interrupted."), _("\ |
15003 | Show whether to send break if interrupted."), _("\ | |
15004 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9f260536 SM |
15005 | set_remotebreak, show_remotebreak, |
15006 | &setlist, &showlist); | |
15007 | deprecate_cmd (remotebreak_cmds.set, "set remote interrupt-sequence"); | |
15008 | deprecate_cmd (remotebreak_cmds.show, "show remote interrupt-sequence"); | |
9a7071a8 JB |
15009 | |
15010 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
15011 | interrupt_sequence_modes, &interrupt_sequence_mode, |
15012 | _("\ | |
9a7071a8 JB |
15013 | Set interrupt sequence to remote target."), _("\ |
15014 | Show interrupt sequence to remote target."), _("\ | |
15015 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
15016 | NULL, show_interrupt_sequence, | |
15017 | &remote_set_cmdlist, | |
15018 | &remote_show_cmdlist); | |
15019 | ||
15020 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
15021 | &interrupt_on_connect, _("\ | |
590042fc PW |
15022 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ |
15023 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ | |
9a7071a8 JB |
15024 | If set, interrupt sequence is sent to remote target."), |
15025 | NULL, NULL, | |
15026 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 15027 | |
23860348 | 15028 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 15029 | |
1a966eab AC |
15030 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
15031 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 15032 | &setlist); |
1a966eab AC |
15033 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
15034 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
15035 | &showlist); |
15036 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
15037 | set_memory_write_packet_size, _("\ |
15038 | Set the maximum number of bytes per memory-write packet.\n\ | |
15039 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
15040 | default packet size. The actual limit is further reduced\n\ | |
15041 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
15042 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
15043 | &remote_set_cmdlist); |
15044 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
15045 | set_memory_read_packet_size, _("\ |
15046 | Set the maximum number of bytes per memory-read packet.\n\ | |
15047 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
15048 | default packet size. The actual limit is further reduced\n\ | |
15049 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
15050 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
15051 | &remote_set_cmdlist); |
15052 | add_cmd ("memory-write-packet-size", no_class, | |
15053 | show_memory_write_packet_size, | |
1a966eab | 15054 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
15055 | &remote_show_cmdlist); |
15056 | add_cmd ("memory-read-packet-size", no_class, | |
15057 | show_memory_read_packet_size, | |
1a966eab | 15058 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 15059 | &remote_show_cmdlist); |
c906108c | 15060 | |
055303e2 | 15061 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
15062 | &remote_hw_watchpoint_limit, _("\ |
15063 | Set the maximum number of target hardware watchpoints."), _("\ | |
15064 | Show the maximum number of target hardware watchpoints."), _("\ | |
055303e2 AB |
15065 | Specify \"unlimited\" for unlimited hardware watchpoints."), |
15066 | NULL, show_hardware_watchpoint_limit, | |
15067 | &remote_set_cmdlist, | |
15068 | &remote_show_cmdlist); | |
15069 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-length-limit", | |
15070 | no_class, | |
480a3f21 PW |
15071 | &remote_hw_watchpoint_length_limit, _("\ |
15072 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
15073 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
055303e2 AB |
15074 | Specify \"unlimited\" to allow watchpoints of unlimited size."), |
15075 | NULL, show_hardware_watchpoint_length_limit, | |
480a3f21 | 15076 | &remote_set_cmdlist, &remote_show_cmdlist); |
055303e2 | 15077 | add_setshow_zuinteger_unlimited_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
15078 | &remote_hw_breakpoint_limit, _("\ |
15079 | Set the maximum number of target hardware breakpoints."), _("\ | |
15080 | Show the maximum number of target hardware breakpoints."), _("\ | |
055303e2 AB |
15081 | Specify \"unlimited\" for unlimited hardware breakpoints."), |
15082 | NULL, show_hardware_breakpoint_limit, | |
b3f42336 | 15083 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 15084 | |
1b493192 PA |
15085 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
15086 | &remote_address_size, _("\ | |
4d28ad1e AC |
15087 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
15088 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
15089 | NULL, |
15090 | NULL, /* FIXME: i18n: */ | |
15091 | &setlist, &showlist); | |
c906108c | 15092 | |
ca4f7f8b PA |
15093 | init_all_packet_configs (); |
15094 | ||
444abaca | 15095 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 15096 | "X", "binary-download", 1); |
0f71a2f6 | 15097 | |
444abaca | 15098 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 15099 | "vCont", "verbose-resume", 0); |
506fb367 | 15100 | |
89be2091 DJ |
15101 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
15102 | "QPassSignals", "pass-signals", 0); | |
15103 | ||
82075af2 JS |
15104 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
15105 | "QCatchSyscalls", "catch-syscalls", 0); | |
15106 | ||
9b224c5e PA |
15107 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
15108 | "QProgramSignals", "program-signals", 0); | |
15109 | ||
bc3b087d SDJ |
15110 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
15111 | "QSetWorkingDir", "set-working-dir", 0); | |
15112 | ||
aefd8b33 SDJ |
15113 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
15114 | "QStartupWithShell", "startup-with-shell", 0); | |
15115 | ||
0a2dde4a SDJ |
15116 | add_packet_config_cmd (&remote_protocol_packets |
15117 | [PACKET_QEnvironmentHexEncoded], | |
15118 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
15119 | 0); | |
15120 | ||
15121 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
15122 | "QEnvironmentReset", "environment-reset", | |
15123 | 0); | |
15124 | ||
15125 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
15126 | "QEnvironmentUnset", "environment-unset", | |
15127 | 0); | |
15128 | ||
444abaca | 15129 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 15130 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 15131 | |
444abaca | 15132 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 15133 | "P", "set-register", 1); |
d471ea57 | 15134 | |
444abaca | 15135 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 15136 | "p", "fetch-register", 1); |
b96ec7ac | 15137 | |
444abaca | 15138 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 15139 | "Z0", "software-breakpoint", 0); |
d471ea57 | 15140 | |
444abaca | 15141 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 15142 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 15143 | |
444abaca | 15144 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 15145 | "Z2", "write-watchpoint", 0); |
d471ea57 | 15146 | |
444abaca | 15147 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 15148 | "Z3", "read-watchpoint", 0); |
d471ea57 | 15149 | |
444abaca | 15150 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 15151 | "Z4", "access-watchpoint", 0); |
d471ea57 | 15152 | |
0876f84a DJ |
15153 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
15154 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 15155 | |
c78fa86a GB |
15156 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
15157 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
15158 | ||
23181151 DJ |
15159 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
15160 | "qXfer:features:read", "target-features", 0); | |
15161 | ||
cfa9d6d9 DJ |
15162 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
15163 | "qXfer:libraries:read", "library-info", 0); | |
15164 | ||
2268b414 JK |
15165 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
15166 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
15167 | ||
fd79ecee DJ |
15168 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
15169 | "qXfer:memory-map:read", "memory-map", 0); | |
15170 | ||
07e059b5 | 15171 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
dda83cd7 | 15172 | "qXfer:osdata:read", "osdata", 0); |
07e059b5 | 15173 | |
dc146f7c VP |
15174 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
15175 | "qXfer:threads:read", "threads", 0); | |
15176 | ||
4aa995e1 | 15177 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
dda83cd7 | 15178 | "qXfer:siginfo:read", "read-siginfo-object", 0); |
4aa995e1 PA |
15179 | |
15180 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
dda83cd7 | 15181 | "qXfer:siginfo:write", "write-siginfo-object", 0); |
4aa995e1 | 15182 | |
b3b9301e PA |
15183 | add_packet_config_cmd |
15184 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 15185 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 15186 | |
169081d0 TG |
15187 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
15188 | "qXfer:uib:read", "unwind-info-block", 0); | |
15189 | ||
444abaca | 15190 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 15191 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
15192 | 0); |
15193 | ||
711e434b PM |
15194 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
15195 | "qGetTIBAddr", "get-thread-information-block-address", | |
15196 | 0); | |
15197 | ||
40ab02ce MS |
15198 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
15199 | "bc", "reverse-continue", 0); | |
15200 | ||
15201 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
15202 | "bs", "reverse-step", 0); | |
15203 | ||
be2a5f71 DJ |
15204 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
15205 | "qSupported", "supported-packets", 0); | |
15206 | ||
08388c79 DE |
15207 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
15208 | "qSearch:memory", "search-memory", 0); | |
15209 | ||
bd3eecc3 PA |
15210 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
15211 | "qTStatus", "trace-status", 0); | |
15212 | ||
15a201c8 GB |
15213 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
15214 | "vFile:setfs", "hostio-setfs", 0); | |
15215 | ||
a6b151f1 DJ |
15216 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
15217 | "vFile:open", "hostio-open", 0); | |
15218 | ||
15219 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
15220 | "vFile:pread", "hostio-pread", 0); | |
15221 | ||
15222 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
15223 | "vFile:pwrite", "hostio-pwrite", 0); | |
15224 | ||
15225 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
15226 | "vFile:close", "hostio-close", 0); | |
15227 | ||
15228 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
15229 | "vFile:unlink", "hostio-unlink", 0); | |
15230 | ||
b9e7b9c3 UW |
15231 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
15232 | "vFile:readlink", "hostio-readlink", 0); | |
15233 | ||
0a93529c GB |
15234 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
15235 | "vFile:fstat", "hostio-fstat", 0); | |
15236 | ||
2d717e4f DJ |
15237 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
15238 | "vAttach", "attach", 0); | |
15239 | ||
15240 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
15241 | "vRun", "run", 0); | |
15242 | ||
a6f3e723 SL |
15243 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
15244 | "QStartNoAckMode", "noack", 0); | |
15245 | ||
82f73884 PA |
15246 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
15247 | "vKill", "kill", 0); | |
15248 | ||
0b16c5cf PA |
15249 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
15250 | "qAttached", "query-attached", 0); | |
15251 | ||
782b2b07 | 15252 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
15253 | "ConditionalTracepoints", |
15254 | "conditional-tracepoints", 0); | |
3788aec7 LM |
15255 | |
15256 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
15257 | "ConditionalBreakpoints", | |
15258 | "conditional-breakpoints", 0); | |
15259 | ||
d3ce09f5 SS |
15260 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
15261 | "BreakpointCommands", | |
15262 | "breakpoint-commands", 0); | |
15263 | ||
7a697b8d SS |
15264 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
15265 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 15266 | |
409873ef SS |
15267 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
15268 | "TracepointSource", "TracepointSource", 0); | |
15269 | ||
d914c394 SS |
15270 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
15271 | "QAllow", "allow", 0); | |
15272 | ||
0fb4aa4b PA |
15273 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
15274 | "StaticTracepoints", "static-tracepoints", 0); | |
15275 | ||
1e4d1764 YQ |
15276 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
15277 | "InstallInTrace", "install-in-trace", 0); | |
15278 | ||
0fb4aa4b | 15279 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
dda83cd7 | 15280 | "qXfer:statictrace:read", "read-sdata-object", 0); |
0fb4aa4b | 15281 | |
78d85199 YQ |
15282 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
15283 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
15284 | ||
03583c20 UW |
15285 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
15286 | "QDisableRandomization", "disable-randomization", 0); | |
15287 | ||
d1feda86 YQ |
15288 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
15289 | "QAgent", "agent", 0); | |
15290 | ||
f6f899bf HAQ |
15291 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
15292 | "QTBuffer:size", "trace-buffer-size", 0); | |
15293 | ||
9accd112 MM |
15294 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
15295 | "Qbtrace:off", "disable-btrace", 0); | |
15296 | ||
15297 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
15298 | "Qbtrace:bts", "enable-btrace-bts", 0); |
15299 | ||
15300 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
15301 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
15302 | |
15303 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
15304 | "qXfer:btrace", "read-btrace", 0); | |
15305 | ||
f4abbc16 MM |
15306 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
15307 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
15308 | ||
d33501a5 MM |
15309 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
15310 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
15311 | ||
73b8c1fd PA |
15312 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
15313 | "multiprocess-feature", "multiprocess-feature", 0); | |
15314 | ||
f7e6eed5 | 15315 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
dda83cd7 | 15316 | "swbreak-feature", "swbreak-feature", 0); |
f7e6eed5 PA |
15317 | |
15318 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
dda83cd7 | 15319 | "hwbreak-feature", "hwbreak-feature", 0); |
f7e6eed5 | 15320 | |
89245bc0 DB |
15321 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
15322 | "fork-event-feature", "fork-event-feature", 0); | |
15323 | ||
15324 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
15325 | "vfork-event-feature", "vfork-event-feature", 0); | |
15326 | ||
b20a6524 MM |
15327 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
15328 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
15329 | ||
750ce8d1 YQ |
15330 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
15331 | "vContSupported", "verbose-resume-supported", 0); | |
15332 | ||
94585166 DB |
15333 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
15334 | "exec-event-feature", "exec-event-feature", 0); | |
15335 | ||
de979965 PA |
15336 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
15337 | "vCtrlC", "ctrl-c", 0); | |
15338 | ||
65706a29 PA |
15339 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
15340 | "QThreadEvents", "thread-events", 0); | |
15341 | ||
f2faf941 PA |
15342 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
15343 | "N stop reply", "no-resumed-stop-reply", 0); | |
15344 | ||
2c2e7f87 LM |
15345 | add_packet_config_cmd (&remote_protocol_packets[PACKET_memory_tagging_feature], |
15346 | "memory-tagging-feature", "memory-tagging-feature", 0); | |
15347 | ||
0b736949 DB |
15348 | /* Assert that we've registered "set remote foo-packet" commands |
15349 | for all packet configs. */ | |
ca4f7f8b PA |
15350 | { |
15351 | int i; | |
15352 | ||
15353 | for (i = 0; i < PACKET_MAX; i++) | |
15354 | { | |
15355 | /* Ideally all configs would have a command associated. Some | |
15356 | still don't though. */ | |
15357 | int excepted; | |
15358 | ||
15359 | switch (i) | |
15360 | { | |
15361 | case PACKET_QNonStop: | |
ca4f7f8b PA |
15362 | case PACKET_EnableDisableTracepoints_feature: |
15363 | case PACKET_tracenz_feature: | |
15364 | case PACKET_DisconnectedTracing_feature: | |
15365 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
15366 | case PACKET_qCRC: |
15367 | /* Additions to this list need to be well justified: | |
15368 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
15369 | excepted = 1; |
15370 | break; | |
15371 | default: | |
15372 | excepted = 0; | |
15373 | break; | |
15374 | } | |
15375 | ||
15376 | /* This catches both forgetting to add a config command, and | |
15377 | forgetting to remove a packet from the exception list. */ | |
15378 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
15379 | } | |
15380 | } | |
15381 | ||
37a105a1 DJ |
15382 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
15383 | Z sub-packet has its own set and show commands, but users may | |
15384 | have sets to this variable in their .gdbinit files (or in their | |
15385 | documentation). */ | |
e9e68a56 | 15386 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c | 15387 | &remote_Z_packet_detect, _("\ |
590042fc PW |
15388 | Set use of remote protocol `Z' packets."), _("\ |
15389 | Show use of remote protocol `Z' packets."), _("\ | |
3b64bf98 | 15390 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 15391 | packets."), |
e9e68a56 | 15392 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
15393 | show_remote_protocol_Z_packet_cmd, |
15394 | /* FIXME: i18n: Use of remote protocol | |
15395 | `Z' packets is %s. */ | |
e9e68a56 | 15396 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 15397 | |
0743fc83 | 15398 | add_basic_prefix_cmd ("remote", class_files, _("\ |
590042fc | 15399 | Manipulate files on the remote system.\n\ |
a6b151f1 | 15400 | Transfer files to and from the remote target system."), |
2f822da5 | 15401 | &remote_cmdlist, |
0743fc83 | 15402 | 0 /* allow-unknown */, &cmdlist); |
a6b151f1 DJ |
15403 | |
15404 | add_cmd ("put", class_files, remote_put_command, | |
15405 | _("Copy a local file to the remote system."), | |
15406 | &remote_cmdlist); | |
15407 | ||
15408 | add_cmd ("get", class_files, remote_get_command, | |
15409 | _("Copy a remote file to the local system."), | |
15410 | &remote_cmdlist); | |
15411 | ||
15412 | add_cmd ("delete", class_files, remote_delete_command, | |
15413 | _("Delete a remote file."), | |
15414 | &remote_cmdlist); | |
15415 | ||
2d717e4f | 15416 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 15417 | &remote_exec_file_var, _("\ |
590042fc PW |
15418 | Set the remote pathname for \"run\"."), _("\ |
15419 | Show the remote pathname for \"run\"."), NULL, | |
94585166 DB |
15420 | set_remote_exec_file, |
15421 | show_remote_exec_file, | |
15422 | &remote_set_cmdlist, | |
15423 | &remote_show_cmdlist); | |
2d717e4f | 15424 | |
c1e36e3e PA |
15425 | add_setshow_boolean_cmd ("range-stepping", class_run, |
15426 | &use_range_stepping, _("\ | |
15427 | Enable or disable range stepping."), _("\ | |
15428 | Show whether target-assisted range stepping is enabled."), _("\ | |
15429 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
15430 | tells the target to step the corresponding range of addresses itself instead\n\ | |
15431 | of issuing multiple single-steps. This speeds up source level\n\ | |
15432 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
15433 | stepping is supported by the target. The default is on."), | |
15434 | set_range_stepping, | |
15435 | show_range_stepping, | |
15436 | &setlist, | |
15437 | &showlist); | |
15438 | ||
ed2b7c17 TT |
15439 | add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\ |
15440 | Set watchdog timer."), _("\ | |
15441 | Show watchdog timer."), _("\ | |
15442 | When non-zero, this timeout is used instead of waiting forever for a target\n\ | |
15443 | to finish a low-level step or continue operation. If the specified amount\n\ | |
15444 | of time passes without a response from the target, an error occurs."), | |
15445 | NULL, | |
15446 | show_watchdog, | |
15447 | &setlist, &showlist); | |
15448 | ||
6cc8564b LM |
15449 | add_setshow_zuinteger_unlimited_cmd ("remote-packet-max-chars", no_class, |
15450 | &remote_packet_max_chars, _("\ | |
15451 | Set the maximum number of characters to display for each remote packet."), _("\ | |
15452 | Show the maximum number of characters to display for each remote packet."), _("\ | |
15453 | Specify \"unlimited\" to display all the characters."), | |
15454 | NULL, show_remote_packet_max_chars, | |
15455 | &setdebuglist, &showdebuglist); | |
15456 | ||
02349803 SM |
15457 | add_setshow_boolean_cmd ("remote", no_class, &remote_debug, |
15458 | _("Set debugging of remote protocol."), | |
15459 | _("Show debugging of remote protocol."), | |
15460 | _("\ | |
baf2b57f SM |
15461 | When enabled, each packet sent or received with the remote target\n\ |
15462 | is displayed."), | |
02349803 SM |
15463 | NULL, |
15464 | show_remote_debug, | |
15465 | &setdebuglist, &showdebuglist); | |
baf2b57f SM |
15466 | |
15467 | add_setshow_zuinteger_unlimited_cmd ("remotetimeout", no_class, | |
15468 | &remote_timeout, _("\ | |
15469 | Set timeout limit to wait for target to respond."), _("\ | |
15470 | Show timeout limit to wait for target to respond."), _("\ | |
15471 | This value is used to set the time limit for gdb to wait for a response\n\ | |
15472 | from the target."), | |
15473 | NULL, | |
15474 | show_remote_timeout, | |
15475 | &setlist, &showlist); | |
15476 | ||
449092f6 | 15477 | /* Eventually initialize fileio. See fileio.c */ |
3f4d92eb | 15478 | initialize_remote_fileio (&remote_set_cmdlist, &remote_show_cmdlist); |
754487e2 LM |
15479 | |
15480 | #if GDB_SELF_TEST | |
15481 | selftests::register_test ("remote_memory_tagging", | |
15482 | selftests::test_memory_tagging_functions); | |
15483 | #endif | |
c906108c | 15484 | } |