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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
4a94e368 | 3 | Copyright (C) 1988-2022 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
3b3dac9b | 30 | #include "process-stratum-target.h" |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
76727919 | 39 | #include "observable.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
268a13a5 TT |
45 | #include "gdbsupport/filestuff.h" |
46 | #include "gdbsupport/rsp-low.h" | |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
268a13a5 | 50 | #include "gdbsupport/gdb_sys_time.h" |
c906108c | 51 | |
400b5eca | 52 | #include "gdbsupport/event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
7e10abd1 | 59 | #include "gdbcore.h" |
6240bebf | 60 | |
449092f6 | 61 | #include "remote-fileio.h" |
198f946f | 62 | #include "gdbsupport/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 | ||
3c69da40 PA |
261 | /* True, if in no ack mode. That is, neither GDB nor the stub will |
262 | expect acks from each other. The connection is assumed to be | |
263 | reliable. */ | |
264 | bool noack_mode = false; | |
265 | ||
266 | /* True if we're connected in extended remote mode. */ | |
267 | bool extended = false; | |
268 | ||
269 | /* True if we resumed the target and we're waiting for the target to | |
270 | stop. In the mean time, we can't start another command/query. | |
271 | The remote server wouldn't be ready to process it, so we'd | |
272 | timeout waiting for a reply that would never come and eventually | |
273 | we'd close the connection. This can happen in asynchronous mode | |
274 | because we allow GDB commands while the target is running. */ | |
275 | bool waiting_for_stop_reply = false; | |
276 | ||
277 | /* The status of the stub support for the various vCont actions. */ | |
278 | vCont_action_support supports_vCont; | |
5b6d1e4f PA |
279 | /* Whether vCont support was probed already. This is a workaround |
280 | until packet_support is per-connection. */ | |
281 | bool supports_vCont_probed; | |
3c69da40 PA |
282 | |
283 | /* True if the user has pressed Ctrl-C, but the target hasn't | |
284 | responded to that. */ | |
285 | bool ctrlc_pending_p = false; | |
286 | ||
287 | /* True if we saw a Ctrl-C while reading or writing from/to the | |
288 | remote descriptor. At that point it is not safe to send a remote | |
289 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
290 | process it once we're done with sending/receiving the current | |
291 | packet, which should be shortly. If however that takes too long, | |
292 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
293 | bool got_ctrlc_during_io = false; | |
294 | ||
295 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
296 | remote_open knows that we don't have a file open when the program | |
297 | starts. */ | |
298 | struct serial *remote_desc = nullptr; | |
299 | ||
300 | /* These are the threads which we last sent to the remote system. The | |
301 | TID member will be -1 for all or -2 for not sent yet. */ | |
302 | ptid_t general_thread = null_ptid; | |
303 | ptid_t continue_thread = null_ptid; | |
304 | ||
305 | /* This is the traceframe which we last selected on the remote system. | |
306 | It will be -1 if no traceframe is selected. */ | |
307 | int remote_traceframe_number = -1; | |
308 | ||
309 | char *last_pass_packet = nullptr; | |
310 | ||
311 | /* The last QProgramSignals packet sent to the target. We bypass | |
312 | sending a new program signals list down to the target if the new | |
313 | packet is exactly the same as the last we sent. IOW, we only let | |
314 | the target know about program signals list changes. */ | |
315 | char *last_program_signals_packet = nullptr; | |
316 | ||
317 | gdb_signal last_sent_signal = GDB_SIGNAL_0; | |
318 | ||
319 | bool last_sent_step = false; | |
320 | ||
321 | /* The execution direction of the last resume we got. */ | |
322 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; | |
323 | ||
324 | char *finished_object = nullptr; | |
325 | char *finished_annex = nullptr; | |
326 | ULONGEST finished_offset = 0; | |
327 | ||
328 | /* Should we try the 'ThreadInfo' query packet? | |
329 | ||
330 | This variable (NOT available to the user: auto-detect only!) | |
331 | determines whether GDB will use the new, simpler "ThreadInfo" | |
332 | query or the older, more complex syntax for thread queries. | |
333 | This is an auto-detect variable (set to true at each connect, | |
334 | and set to false when the target fails to recognize it). */ | |
335 | bool use_threadinfo_query = false; | |
336 | bool use_threadextra_query = false; | |
337 | ||
338 | threadref echo_nextthread {}; | |
339 | threadref nextthread {}; | |
340 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
341 | ||
342 | /* The state of remote notification. */ | |
343 | struct remote_notif_state *notif_state = nullptr; | |
344 | ||
345 | /* The branch trace configuration. */ | |
346 | struct btrace_config btrace_config {}; | |
347 | ||
348 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
349 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
350 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
351 | has yet been sent. */ | |
352 | int fs_pid = -1; | |
353 | ||
354 | /* A readahead cache for vFile:pread. Often, reading a binary | |
355 | involves a sequence of small reads. E.g., when parsing an ELF | |
356 | file. A readahead cache helps mostly the case of remote | |
357 | debugging on a connection with higher latency, due to the | |
358 | request/reply nature of the RSP. We only cache data for a single | |
359 | file descriptor at a time. */ | |
360 | struct readahead_cache readahead_cache; | |
361 | ||
362 | /* The list of already fetched and acknowledged stop events. This | |
363 | queue is used for notification Stop, and other notifications | |
364 | don't need queue for their events, because the notification | |
365 | events of Stop can't be consumed immediately, so that events | |
366 | should be queued first, and be consumed by remote_wait_{ns,as} | |
367 | one per time. Other notifications can consume their events | |
368 | immediately, so queue is not needed for them. */ | |
953edf2b | 369 | std::vector<stop_reply_up> stop_reply_queue; |
3c69da40 PA |
370 | |
371 | /* Asynchronous signal handle registered as event loop source for | |
372 | when we have pending events ready to be passed to the core. */ | |
373 | struct async_event_handler *remote_async_inferior_event_token = nullptr; | |
374 | ||
375 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with | |
376 | ``forever'' still use the normal timeout mechanism. This is | |
377 | currently used by the ASYNC code to guarentee that target reads | |
378 | during the initial connect always time-out. Once getpkt has been | |
379 | modified to return a timeout indication and, in turn | |
380 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
381 | this can go away. */ | |
382 | int wait_forever_enabled_p = 1; | |
383 | ||
384 | private: | |
385 | /* Mapping of remote protocol data for each gdbarch. Usually there | |
386 | is only one entry here, though we may see more with stubs that | |
387 | support multi-process. */ | |
388 | std::unordered_map<struct gdbarch *, remote_arch_state> | |
389 | m_arch_states; | |
390 | }; | |
6b8edb51 | 391 | |
d9f719f1 PA |
392 | static const target_info remote_target_info = { |
393 | "remote", | |
ae9adb36 | 394 | N_("Remote target using gdb-specific protocol"), |
d9f719f1 PA |
395 | remote_doc |
396 | }; | |
397 | ||
3b3dac9b | 398 | class remote_target : public process_stratum_target |
f6ac5f3d PA |
399 | { |
400 | public: | |
3b3dac9b | 401 | remote_target () = default; |
6b8edb51 | 402 | ~remote_target () override; |
f6ac5f3d | 403 | |
d9f719f1 PA |
404 | const target_info &info () const override |
405 | { return remote_target_info; } | |
f6ac5f3d | 406 | |
121b3efd PA |
407 | const char *connection_string () override; |
408 | ||
f6ac5f3d PA |
409 | thread_control_capabilities get_thread_control_capabilities () override |
410 | { return tc_schedlock; } | |
411 | ||
d9f719f1 PA |
412 | /* Open a remote connection. */ |
413 | static void open (const char *, int); | |
414 | ||
f6ac5f3d PA |
415 | void close () override; |
416 | ||
417 | void detach (inferior *, int) override; | |
418 | void disconnect (const char *, int) override; | |
419 | ||
1192f124 | 420 | void commit_resumed () override; |
f6ac5f3d | 421 | void resume (ptid_t, int, enum gdb_signal) override; |
b60cea74 | 422 | ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override; |
b4b1a226 | 423 | bool has_pending_events () override; |
f6ac5f3d PA |
424 | |
425 | void fetch_registers (struct regcache *, int) override; | |
426 | void store_registers (struct regcache *, int) override; | |
427 | void prepare_to_store (struct regcache *) override; | |
428 | ||
f6ac5f3d PA |
429 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; |
430 | ||
431 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
432 | enum remove_bp_reason) override; | |
433 | ||
434 | ||
57810aa7 PA |
435 | bool stopped_by_sw_breakpoint () override; |
436 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 437 | |
57810aa7 | 438 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 439 | |
57810aa7 | 440 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 441 | |
57810aa7 | 442 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 443 | |
57810aa7 | 444 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 445 | |
57810aa7 | 446 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
447 | |
448 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
449 | ||
450 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
451 | ||
452 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
453 | ||
454 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
455 | ||
456 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
457 | struct expression *) override; | |
458 | ||
459 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
460 | struct expression *) override; | |
461 | ||
462 | void kill () override; | |
463 | ||
464 | void load (const char *, int) override; | |
465 | ||
466 | void mourn_inferior () override; | |
467 | ||
adc6a863 | 468 | void pass_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d PA |
469 | |
470 | int set_syscall_catchpoint (int, bool, int, | |
471 | gdb::array_view<const int>) override; | |
472 | ||
adc6a863 | 473 | void program_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d | 474 | |
57810aa7 | 475 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
476 | |
477 | const char *thread_name (struct thread_info *) override; | |
478 | ||
479 | void update_thread_list () override; | |
480 | ||
a068643d | 481 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
482 | |
483 | const char *extra_thread_info (struct thread_info *) override; | |
484 | ||
c80e29db | 485 | ptid_t get_ada_task_ptid (long lwp, ULONGEST thread) override; |
f6ac5f3d PA |
486 | |
487 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
488 | int handle_len, | |
489 | inferior *inf) override; | |
490 | ||
3d6c6204 KB |
491 | gdb::byte_vector thread_info_to_thread_handle (struct thread_info *tp) |
492 | override; | |
493 | ||
f6ac5f3d PA |
494 | void stop (ptid_t) override; |
495 | ||
496 | void interrupt () override; | |
497 | ||
498 | void pass_ctrlc () override; | |
499 | ||
500 | enum target_xfer_status xfer_partial (enum target_object object, | |
501 | const char *annex, | |
502 | gdb_byte *readbuf, | |
503 | const gdb_byte *writebuf, | |
504 | ULONGEST offset, ULONGEST len, | |
505 | ULONGEST *xfered_len) override; | |
506 | ||
507 | ULONGEST get_memory_xfer_limit () override; | |
508 | ||
509 | void rcmd (const char *command, struct ui_file *output) override; | |
510 | ||
0e90c441 | 511 | const char *pid_to_exec_file (int pid) override; |
f6ac5f3d PA |
512 | |
513 | void log_command (const char *cmd) override | |
514 | { | |
515 | serial_log_command (this, cmd); | |
516 | } | |
517 | ||
518 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
519 | CORE_ADDR load_module_addr, | |
520 | CORE_ADDR offset) override; | |
521 | ||
57810aa7 | 522 | bool can_execute_reverse () override; |
f6ac5f3d PA |
523 | |
524 | std::vector<mem_region> memory_map () override; | |
525 | ||
526 | void flash_erase (ULONGEST address, LONGEST length) override; | |
527 | ||
528 | void flash_done () override; | |
529 | ||
530 | const struct target_desc *read_description () override; | |
531 | ||
532 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
533 | const gdb_byte *pattern, ULONGEST pattern_len, | |
534 | CORE_ADDR *found_addrp) override; | |
535 | ||
57810aa7 | 536 | bool can_async_p () override; |
f6ac5f3d | 537 | |
57810aa7 | 538 | bool is_async_p () override; |
f6ac5f3d | 539 | |
4a570176 | 540 | void async (bool) override; |
f6ac5f3d | 541 | |
5b6d1e4f PA |
542 | int async_wait_fd () override; |
543 | ||
f6ac5f3d PA |
544 | void thread_events (int) override; |
545 | ||
546 | int can_do_single_step () override; | |
547 | ||
548 | void terminal_inferior () override; | |
549 | ||
550 | void terminal_ours () override; | |
551 | ||
57810aa7 | 552 | bool supports_non_stop () override; |
f6ac5f3d | 553 | |
57810aa7 | 554 | bool supports_multi_process () override; |
f6ac5f3d | 555 | |
57810aa7 | 556 | bool supports_disable_randomization () override; |
f6ac5f3d | 557 | |
57810aa7 | 558 | bool filesystem_is_local () override; |
f6ac5f3d PA |
559 | |
560 | ||
561 | int fileio_open (struct inferior *inf, const char *filename, | |
562 | int flags, int mode, int warn_if_slow, | |
b872057a | 563 | fileio_error *target_errno) override; |
f6ac5f3d PA |
564 | |
565 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 566 | ULONGEST offset, fileio_error *target_errno) override; |
f6ac5f3d PA |
567 | |
568 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 569 | ULONGEST offset, fileio_error *target_errno) override; |
f6ac5f3d | 570 | |
b872057a | 571 | int fileio_fstat (int fd, struct stat *sb, fileio_error *target_errno) override; |
f6ac5f3d | 572 | |
b872057a | 573 | int fileio_close (int fd, fileio_error *target_errno) override; |
f6ac5f3d PA |
574 | |
575 | int fileio_unlink (struct inferior *inf, | |
576 | const char *filename, | |
b872057a | 577 | fileio_error *target_errno) override; |
f6ac5f3d PA |
578 | |
579 | gdb::optional<std::string> | |
580 | fileio_readlink (struct inferior *inf, | |
581 | const char *filename, | |
b872057a | 582 | fileio_error *target_errno) override; |
f6ac5f3d | 583 | |
57810aa7 | 584 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 585 | |
57810aa7 | 586 | bool supports_string_tracing () override; |
f6ac5f3d | 587 | |
57810aa7 | 588 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 589 | |
57810aa7 | 590 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
591 | |
592 | void trace_init () override; | |
593 | ||
594 | void download_tracepoint (struct bp_location *location) override; | |
595 | ||
57810aa7 | 596 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
597 | |
598 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
599 | ||
600 | void enable_tracepoint (struct bp_location *location) override; | |
601 | ||
602 | void disable_tracepoint (struct bp_location *location) override; | |
603 | ||
604 | void trace_set_readonly_regions () override; | |
605 | ||
606 | void trace_start () override; | |
607 | ||
608 | int get_trace_status (struct trace_status *ts) override; | |
609 | ||
610 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
611 | override; | |
612 | ||
613 | void trace_stop () override; | |
614 | ||
615 | int trace_find (enum trace_find_type type, int num, | |
616 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
617 | ||
57810aa7 | 618 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
619 | |
620 | int save_trace_data (const char *filename) override; | |
621 | ||
622 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
623 | ||
624 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
625 | ||
626 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
627 | ||
628 | int get_min_fast_tracepoint_insn_len () override; | |
629 | ||
630 | void set_disconnected_tracing (int val) override; | |
631 | ||
632 | void set_circular_trace_buffer (int val) override; | |
633 | ||
634 | void set_trace_buffer_size (LONGEST val) override; | |
635 | ||
57810aa7 PA |
636 | bool set_trace_notes (const char *user, const char *notes, |
637 | const char *stopnotes) override; | |
f6ac5f3d PA |
638 | |
639 | int core_of_thread (ptid_t ptid) override; | |
640 | ||
641 | int verify_memory (const gdb_byte *data, | |
642 | CORE_ADDR memaddr, ULONGEST size) override; | |
643 | ||
644 | ||
57810aa7 | 645 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
646 | |
647 | void set_permissions () override; | |
648 | ||
649 | bool static_tracepoint_marker_at (CORE_ADDR, | |
650 | struct static_tracepoint_marker *marker) | |
651 | override; | |
652 | ||
653 | std::vector<static_tracepoint_marker> | |
654 | static_tracepoint_markers_by_strid (const char *id) override; | |
655 | ||
656 | traceframe_info_up traceframe_info () override; | |
657 | ||
57810aa7 PA |
658 | bool use_agent (bool use) override; |
659 | bool can_use_agent () override; | |
f6ac5f3d | 660 | |
696c0d5e MM |
661 | struct btrace_target_info * |
662 | enable_btrace (thread_info *tp, const struct btrace_config *conf) override; | |
f6ac5f3d PA |
663 | |
664 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
665 | ||
666 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
667 | ||
668 | enum btrace_error read_btrace (struct btrace_data *data, | |
669 | struct btrace_target_info *btinfo, | |
670 | enum btrace_read_type type) override; | |
671 | ||
672 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 673 | bool augmented_libraries_svr4_read () override; |
82d1f134 | 674 | void follow_fork (inferior *, ptid_t, target_waitkind, bool, bool) override; |
294c36eb | 675 | void follow_exec (inferior *, ptid_t, const char *) override; |
f6ac5f3d PA |
676 | int insert_fork_catchpoint (int) override; |
677 | int remove_fork_catchpoint (int) override; | |
678 | int insert_vfork_catchpoint (int) override; | |
679 | int remove_vfork_catchpoint (int) override; | |
680 | int insert_exec_catchpoint (int) override; | |
681 | int remove_exec_catchpoint (int) override; | |
682 | enum exec_direction_kind execution_direction () override; | |
683 | ||
dbe692af LM |
684 | bool supports_memory_tagging () override; |
685 | ||
686 | bool fetch_memtags (CORE_ADDR address, size_t len, | |
687 | gdb::byte_vector &tags, int type) override; | |
688 | ||
689 | bool store_memtags (CORE_ADDR address, size_t len, | |
690 | const gdb::byte_vector &tags, int type) override; | |
691 | ||
6b8edb51 PA |
692 | public: /* Remote specific methods. */ |
693 | ||
694 | void remote_download_command_source (int num, ULONGEST addr, | |
695 | struct command_line *cmds); | |
696 | ||
697 | void remote_file_put (const char *local_file, const char *remote_file, | |
698 | int from_tty); | |
699 | void remote_file_get (const char *remote_file, const char *local_file, | |
700 | int from_tty); | |
701 | void remote_file_delete (const char *remote_file, int from_tty); | |
702 | ||
703 | int remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 704 | ULONGEST offset, fileio_error *remote_errno); |
6b8edb51 | 705 | int remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, |
b872057a | 706 | ULONGEST offset, fileio_error *remote_errno); |
6b8edb51 | 707 | int remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, |
b872057a | 708 | ULONGEST offset, fileio_error *remote_errno); |
6b8edb51 PA |
709 | |
710 | int remote_hostio_send_command (int command_bytes, int which_packet, | |
b872057a | 711 | fileio_error *remote_errno, const char **attachment, |
6b8edb51 PA |
712 | int *attachment_len); |
713 | int remote_hostio_set_filesystem (struct inferior *inf, | |
b872057a | 714 | fileio_error *remote_errno); |
6b8edb51 PA |
715 | /* We should get rid of this and use fileio_open directly. */ |
716 | int remote_hostio_open (struct inferior *inf, const char *filename, | |
717 | int flags, int mode, int warn_if_slow, | |
b872057a SM |
718 | fileio_error *remote_errno); |
719 | int remote_hostio_close (int fd, fileio_error *remote_errno); | |
6b8edb51 PA |
720 | |
721 | int remote_hostio_unlink (inferior *inf, const char *filename, | |
b872057a | 722 | fileio_error *remote_errno); |
6b8edb51 PA |
723 | |
724 | struct remote_state *get_remote_state (); | |
725 | ||
726 | long get_remote_packet_size (void); | |
727 | long get_memory_packet_size (struct memory_packet_config *config); | |
728 | ||
729 | long get_memory_write_packet_size (); | |
730 | long get_memory_read_packet_size (); | |
731 | ||
732 | char *append_pending_thread_resumptions (char *p, char *endp, | |
733 | ptid_t ptid); | |
d9f719f1 | 734 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d | 735 | void start_remote (int from_tty, int extended_p); |
00431a78 | 736 | void remote_detach_1 (struct inferior *inf, int from_tty); |
6b8edb51 PA |
737 | |
738 | char *append_resumption (char *p, char *endp, | |
739 | ptid_t ptid, int step, gdb_signal siggnal); | |
d51926f0 | 740 | int remote_resume_with_vcont (ptid_t scope_ptid, int step, |
6b8edb51 PA |
741 | gdb_signal siggnal); |
742 | ||
64d38fdd | 743 | thread_info *add_current_inferior_and_thread (const char *wait_status); |
6b8edb51 PA |
744 | |
745 | ptid_t wait_ns (ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 746 | target_wait_flags options); |
6b8edb51 | 747 | ptid_t wait_as (ptid_t ptid, target_waitstatus *status, |
b60cea74 | 748 | target_wait_flags options); |
6b8edb51 PA |
749 | |
750 | ptid_t process_stop_reply (struct stop_reply *stop_reply, | |
751 | target_waitstatus *status); | |
752 | ||
8f66807b | 753 | ptid_t select_thread_for_ambiguous_stop_reply |
c272a98c | 754 | (const struct target_waitstatus &status); |
8f66807b | 755 | |
8a82de58 | 756 | void remote_notice_new_inferior (ptid_t currthread, bool executing); |
6b8edb51 | 757 | |
1edb66d8 | 758 | void print_one_stopped_thread (thread_info *thread); |
6b8edb51 PA |
759 | void process_initial_stop_replies (int from_tty); |
760 | ||
b622494e AB |
761 | thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing, |
762 | bool silent_p); | |
6b8edb51 PA |
763 | |
764 | void btrace_sync_conf (const btrace_config *conf); | |
765 | ||
766 | void remote_btrace_maybe_reopen (); | |
767 | ||
768 | void remove_new_fork_children (threads_listing_context *context); | |
28561a65 | 769 | void kill_new_fork_children (inferior *inf); |
6b8edb51 PA |
770 | void discard_pending_stop_replies (struct inferior *inf); |
771 | int stop_reply_queue_length (); | |
772 | ||
773 | void check_pending_events_prevent_wildcard_vcont | |
2f63ec5c | 774 | (bool *may_global_wildcard_vcont); |
6b8edb51 PA |
775 | |
776 | void discard_pending_stop_replies_in_queue (); | |
777 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
778 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
779 | int peek_stop_reply (ptid_t ptid); | |
bb277751 | 780 | void remote_parse_stop_reply (const char *buf, stop_reply *event); |
6b8edb51 PA |
781 | |
782 | void remote_stop_ns (ptid_t ptid); | |
783 | void remote_interrupt_as (); | |
784 | void remote_interrupt_ns (); | |
785 | ||
786 | char *remote_get_noisy_reply (); | |
787 | int remote_query_attached (int pid); | |
9ab8741a | 788 | inferior *remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 PA |
789 | int try_open_exec); |
790 | ||
791 | ptid_t remote_current_thread (ptid_t oldpid); | |
e3b2741b | 792 | ptid_t get_current_thread (const char *wait_status); |
6b8edb51 PA |
793 | |
794 | void set_thread (ptid_t ptid, int gen); | |
795 | void set_general_thread (ptid_t ptid); | |
796 | void set_continue_thread (ptid_t ptid); | |
797 | void set_general_process (); | |
798 | ||
799 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
800 | ||
cecb1912 | 801 | int remote_unpack_thread_info_response (const char *pkt, threadref *expectedref, |
6b8edb51 PA |
802 | gdb_ext_thread_info *info); |
803 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
804 | gdb_ext_thread_info *info); | |
805 | ||
cecb1912 | 806 | int parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
807 | threadref *original_echo, |
808 | threadref *resultlist, | |
809 | int *doneflag); | |
810 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
811 | int result_limit, int *done, int *result_count, | |
812 | threadref *threadlist); | |
813 | ||
814 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
815 | void *context, int looplimit); | |
816 | ||
817 | int remote_get_threads_with_ql (threads_listing_context *context); | |
818 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
819 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
820 | ||
821 | void extended_remote_restart (); | |
822 | ||
823 | void get_offsets (); | |
824 | ||
825 | void remote_check_symbols (); | |
826 | ||
827 | void remote_supported_packet (const struct protocol_feature *feature, | |
828 | enum packet_support support, | |
829 | const char *argument); | |
830 | ||
831 | void remote_query_supported (); | |
832 | ||
833 | void remote_packet_size (const protocol_feature *feature, | |
834 | packet_support support, const char *value); | |
835 | ||
836 | void remote_serial_quit_handler (); | |
837 | ||
838 | void remote_detach_pid (int pid); | |
839 | ||
840 | void remote_vcont_probe (); | |
841 | ||
842 | void remote_resume_with_hc (ptid_t ptid, int step, | |
843 | gdb_signal siggnal); | |
844 | ||
845 | void send_interrupt_sequence (); | |
846 | void interrupt_query (); | |
847 | ||
848 | void remote_notif_get_pending_events (notif_client *nc); | |
849 | ||
850 | int fetch_register_using_p (struct regcache *regcache, | |
851 | packet_reg *reg); | |
852 | int send_g_packet (); | |
853 | void process_g_packet (struct regcache *regcache); | |
854 | void fetch_registers_using_g (struct regcache *regcache); | |
855 | int store_register_using_P (const struct regcache *regcache, | |
856 | packet_reg *reg); | |
857 | void store_registers_using_G (const struct regcache *regcache); | |
858 | ||
859 | void set_remote_traceframe (); | |
860 | ||
861 | void check_binary_download (CORE_ADDR addr); | |
862 | ||
863 | target_xfer_status remote_write_bytes_aux (const char *header, | |
864 | CORE_ADDR memaddr, | |
865 | const gdb_byte *myaddr, | |
866 | ULONGEST len_units, | |
867 | int unit_size, | |
868 | ULONGEST *xfered_len_units, | |
869 | char packet_format, | |
870 | int use_length); | |
871 | ||
872 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
873 | const gdb_byte *myaddr, ULONGEST len, | |
874 | int unit_size, ULONGEST *xfered_len); | |
875 | ||
876 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
877 | ULONGEST len_units, | |
878 | int unit_size, ULONGEST *xfered_len_units); | |
879 | ||
880 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
881 | ULONGEST memaddr, | |
882 | ULONGEST len, | |
883 | int unit_size, | |
884 | ULONGEST *xfered_len); | |
885 | ||
886 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
887 | gdb_byte *myaddr, ULONGEST len, | |
888 | int unit_size, | |
889 | ULONGEST *xfered_len); | |
890 | ||
891 | packet_result remote_send_printf (const char *format, ...) | |
892 | ATTRIBUTE_PRINTF (2, 3); | |
893 | ||
894 | target_xfer_status remote_flash_write (ULONGEST address, | |
895 | ULONGEST length, ULONGEST *xfered_len, | |
896 | const gdb_byte *data); | |
897 | ||
898 | int readchar (int timeout); | |
899 | ||
900 | void remote_serial_write (const char *str, int len); | |
901 | ||
902 | int putpkt (const char *buf); | |
903 | int putpkt_binary (const char *buf, int cnt); | |
904 | ||
8d64371b TT |
905 | int putpkt (const gdb::char_vector &buf) |
906 | { | |
907 | return putpkt (buf.data ()); | |
908 | } | |
909 | ||
6b8edb51 | 910 | void skip_frame (); |
8d64371b TT |
911 | long read_frame (gdb::char_vector *buf_p); |
912 | void getpkt (gdb::char_vector *buf, int forever); | |
913 | int getpkt_or_notif_sane_1 (gdb::char_vector *buf, int forever, | |
6b8edb51 | 914 | int expecting_notif, int *is_notif); |
8d64371b TT |
915 | int getpkt_sane (gdb::char_vector *buf, int forever); |
916 | int getpkt_or_notif_sane (gdb::char_vector *buf, int forever, | |
6b8edb51 PA |
917 | int *is_notif); |
918 | int remote_vkill (int pid); | |
919 | void remote_kill_k (); | |
920 | ||
921 | void extended_remote_disable_randomization (int val); | |
922 | int extended_remote_run (const std::string &args); | |
923 | ||
924 | void send_environment_packet (const char *action, | |
925 | const char *packet, | |
926 | const char *value); | |
927 | ||
928 | void extended_remote_environment_support (); | |
3c69da40 | 929 | void extended_remote_set_inferior_cwd (); |
80152258 | 930 | |
3c69da40 PA |
931 | target_xfer_status remote_write_qxfer (const char *object_name, |
932 | const char *annex, | |
933 | const gdb_byte *writebuf, | |
934 | ULONGEST offset, LONGEST len, | |
935 | ULONGEST *xfered_len, | |
936 | struct packet_config *packet); | |
43c3a0e4 | 937 | |
3c69da40 PA |
938 | target_xfer_status remote_read_qxfer (const char *object_name, |
939 | const char *annex, | |
940 | gdb_byte *readbuf, ULONGEST offset, | |
941 | LONGEST len, | |
942 | ULONGEST *xfered_len, | |
943 | struct packet_config *packet); | |
43c3a0e4 | 944 | |
3c69da40 | 945 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 946 | |
3c69da40 | 947 | bool vcont_r_supported (); |
43c3a0e4 | 948 | |
288712bb AB |
949 | private: |
950 | ||
951 | bool start_remote_1 (int from_tty, int extended_p); | |
43c3a0e4 | 952 | |
3c69da40 PA |
953 | /* The remote state. Don't reference this directly. Use the |
954 | get_remote_state method instead. */ | |
955 | remote_state m_remote_state; | |
43c3a0e4 PA |
956 | }; |
957 | ||
3c69da40 PA |
958 | static const target_info extended_remote_target_info = { |
959 | "extended-remote", | |
ae9adb36 | 960 | N_("Extended remote target using gdb-specific protocol"), |
3c69da40 PA |
961 | remote_doc |
962 | }; | |
ea9c271d | 963 | |
3c69da40 PA |
964 | /* Set up the extended remote target by extending the standard remote |
965 | target and adding to it. */ | |
966 | ||
967 | class extended_remote_target final : public remote_target | |
ea9c271d | 968 | { |
9d6eea31 | 969 | public: |
3c69da40 PA |
970 | const target_info &info () const override |
971 | { return extended_remote_target_info; } | |
9d6eea31 | 972 | |
3c69da40 PA |
973 | /* Open an extended-remote connection. */ |
974 | static void open (const char *, int); | |
de44f5a7 | 975 | |
3c69da40 PA |
976 | bool can_create_inferior () override { return true; } |
977 | void create_inferior (const char *, const std::string &, | |
978 | char **, int) override; | |
9d6eea31 | 979 | |
3c69da40 | 980 | void detach (inferior *, int) override; |
9d6eea31 | 981 | |
3c69da40 PA |
982 | bool can_attach () override { return true; } |
983 | void attach (const char *, int) override; | |
be2a5f71 | 984 | |
3c69da40 PA |
985 | void post_attach (int) override; |
986 | bool supports_disable_randomization () override; | |
987 | }; | |
1e51243a | 988 | |
a4543480 SM |
989 | struct stop_reply : public notif_event |
990 | { | |
991 | ~stop_reply (); | |
992 | ||
993 | /* The identifier of the thread about this event */ | |
994 | ptid_t ptid; | |
995 | ||
996 | /* The remote state this event is associated with. When the remote | |
997 | connection, represented by a remote_state object, is closed, | |
998 | all the associated stop_reply events should be released. */ | |
999 | struct remote_state *rs; | |
1000 | ||
1001 | struct target_waitstatus ws; | |
1002 | ||
1003 | /* The architecture associated with the expedited registers. */ | |
1004 | gdbarch *arch; | |
1005 | ||
1006 | /* Expedited registers. This makes remote debugging a bit more | |
1007 | efficient for those targets that provide critical registers as | |
1008 | part of their normal status mechanism (as another roundtrip to | |
1009 | fetch them is avoided). */ | |
1010 | std::vector<cached_reg_t> regcache; | |
1011 | ||
1012 | enum target_stop_reason stop_reason; | |
1013 | ||
1014 | CORE_ADDR watch_data_address; | |
1015 | ||
1016 | int core; | |
1017 | }; | |
1018 | ||
06c7226e SM |
1019 | /* Return TARGET as a remote_target if it is one, else nullptr. */ |
1020 | ||
1021 | static remote_target * | |
1022 | as_remote_target (process_stratum_target *target) | |
1023 | { | |
1024 | return dynamic_cast<remote_target *> (target); | |
1025 | } | |
1026 | ||
24b2de7b AB |
1027 | /* See remote.h. */ |
1028 | ||
1029 | bool | |
1030 | is_remote_target (process_stratum_target *target) | |
1031 | { | |
06c7226e | 1032 | return as_remote_target (target) != nullptr; |
24b2de7b AB |
1033 | } |
1034 | ||
3c69da40 | 1035 | /* Per-program-space data key. */ |
08b8a139 | 1036 | static const registry<program_space>::key<char, gdb::xfree_deleter<char>> |
7b4a314f | 1037 | remote_pspace_data; |
2d717e4f | 1038 | |
3c69da40 PA |
1039 | /* The variable registered as the control variable used by the |
1040 | remote exec-file commands. While the remote exec-file setting is | |
1041 | per-program-space, the set/show machinery uses this as the | |
1042 | location of the remote exec-file value. */ | |
e0700ba4 | 1043 | static std::string remote_exec_file_var; |
a6f3e723 | 1044 | |
3c69da40 PA |
1045 | /* The size to align memory write packets, when practical. The protocol |
1046 | does not guarantee any alignment, and gdb will generate short | |
1047 | writes and unaligned writes, but even as a best-effort attempt this | |
1048 | can improve bulk transfers. For instance, if a write is misaligned | |
1049 | relative to the target's data bus, the stub may need to make an extra | |
1050 | round trip fetching data from the target. This doesn't make a | |
1051 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 1052 | |
3c69da40 PA |
1053 | The alignment chosen is arbitrary; usually data bus width is |
1054 | important here, not the possibly larger cache line size. */ | |
1055 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 1056 | |
3c69da40 | 1057 | /* Prototypes for local functions. */ |
74531fed | 1058 | |
3c69da40 | 1059 | static int hexnumlen (ULONGEST num); |
782b2b07 | 1060 | |
3c69da40 | 1061 | static int stubhex (int ch); |
5d93a237 | 1062 | |
3c69da40 | 1063 | static int hexnumstr (char *, ULONGEST); |
048094ac | 1064 | |
3c69da40 | 1065 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 1066 | |
3c69da40 | 1067 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1068 | |
cecb1912 | 1069 | static int stub_unpack_int (const char *buff, int fieldlength); |
5e4a05c4 | 1070 | |
3c69da40 | 1071 | struct packet_config; |
b73be471 | 1072 | |
3c69da40 PA |
1073 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1074 | int from_tty, | |
1075 | struct cmd_list_element *c, | |
1076 | const char *value); | |
8e88304f | 1077 | |
3c69da40 | 1078 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1079 | |
3c69da40 | 1080 | static void remote_async_inferior_event_handler (gdb_client_data); |
b80fafe3 | 1081 | |
eefce37f | 1082 | static bool remote_read_description_p (struct target_ops *target); |
88b496c3 | 1083 | |
05be00a8 | 1084 | static void remote_console_output (const char *msg); |
5965e028 | 1085 | |
3c69da40 | 1086 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1087 | |
5b6d1e4f | 1088 | static void remote_unpush_and_throw (remote_target *target); |
15a201c8 | 1089 | |
3c69da40 | 1090 | /* For "remote". */ |
80152258 | 1091 | |
3c69da40 | 1092 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1093 | |
3c69da40 | 1094 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1095 | |
3c69da40 PA |
1096 | static struct cmd_list_element *remote_set_cmdlist; |
1097 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1098 | |
3c69da40 | 1099 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1100 | |
491144b5 | 1101 | static bool use_range_stepping = true; |
3c69da40 | 1102 | |
c9d22089 SM |
1103 | /* From the remote target's point of view, each thread is in one of these three |
1104 | states. */ | |
1105 | enum class resume_state | |
1106 | { | |
1107 | /* Not resumed - we haven't been asked to resume this thread. */ | |
1108 | NOT_RESUMED, | |
1109 | ||
1110 | /* We have been asked to resume this thread, but haven't sent a vCont action | |
1111 | for it yet. We'll need to consider it next time commit_resume is | |
1112 | called. */ | |
1113 | RESUMED_PENDING_VCONT, | |
1114 | ||
1115 | /* We have been asked to resume this thread, and we have sent a vCont action | |
1116 | for it. */ | |
1117 | RESUMED, | |
1118 | }; | |
1119 | ||
1120 | /* Information about a thread's pending vCont-resume. Used when a thread is in | |
1121 | the remote_resume_state::RESUMED_PENDING_VCONT state. remote_target::resume | |
1122 | stores this information which is then picked up by | |
1123 | remote_target::commit_resume to know which is the proper action for this | |
1124 | thread to include in the vCont packet. */ | |
1125 | struct resumed_pending_vcont_info | |
1126 | { | |
1127 | /* True if the last resume call for this thread was a step request, false | |
1128 | if a continue request. */ | |
1129 | bool step; | |
1130 | ||
1131 | /* The signal specified in the last resume call for this thread. */ | |
1132 | gdb_signal sig; | |
1133 | }; | |
1134 | ||
7aabaf9d SM |
1135 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1136 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1137 | { |
7aabaf9d SM |
1138 | std::string extra; |
1139 | std::string name; | |
1140 | int core = -1; | |
799a2abe | 1141 | |
f6327dcb KB |
1142 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1143 | sequence of bytes. */ | |
7aabaf9d | 1144 | gdb::byte_vector thread_handle; |
f6327dcb | 1145 | |
799a2abe | 1146 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1147 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1148 | |
1149 | /* This is set to the data address of the access causing the target | |
1150 | to stop for a watchpoint. */ | |
7aabaf9d | 1151 | CORE_ADDR watch_data_address = 0; |
85ad3aaf | 1152 | |
c9d22089 | 1153 | /* Get the thread's resume state. */ |
a6c11cbb | 1154 | enum resume_state get_resume_state () const |
c9d22089 SM |
1155 | { |
1156 | return m_resume_state; | |
1157 | } | |
1158 | ||
1159 | /* Put the thread in the NOT_RESUMED state. */ | |
1160 | void set_not_resumed () | |
1161 | { | |
1162 | m_resume_state = resume_state::NOT_RESUMED; | |
1163 | } | |
85ad3aaf | 1164 | |
c9d22089 SM |
1165 | /* Put the thread in the RESUMED_PENDING_VCONT state. */ |
1166 | void set_resumed_pending_vcont (bool step, gdb_signal sig) | |
1167 | { | |
1168 | m_resume_state = resume_state::RESUMED_PENDING_VCONT; | |
1169 | m_resumed_pending_vcont_info.step = step; | |
1170 | m_resumed_pending_vcont_info.sig = sig; | |
1171 | } | |
85ad3aaf | 1172 | |
c9d22089 | 1173 | /* Get the information this thread's pending vCont-resumption. |
85ad3aaf | 1174 | |
c9d22089 SM |
1175 | Must only be called if the thread is in the RESUMED_PENDING_VCONT resume |
1176 | state. */ | |
1177 | const struct resumed_pending_vcont_info &resumed_pending_vcont_info () const | |
1178 | { | |
1179 | gdb_assert (m_resume_state == resume_state::RESUMED_PENDING_VCONT); | |
1180 | ||
1181 | return m_resumed_pending_vcont_info; | |
1182 | } | |
1183 | ||
1184 | /* Put the thread in the VCONT_RESUMED state. */ | |
1185 | void set_resumed () | |
1186 | { | |
1187 | m_resume_state = resume_state::RESUMED; | |
1188 | } | |
1189 | ||
1190 | private: | |
1191 | /* Resume state for this thread. This is used to implement vCont action | |
1192 | coalescing (only when the target operates in non-stop mode). | |
1193 | ||
1194 | remote_target::resume moves the thread to the RESUMED_PENDING_VCONT state, | |
1195 | which notes that this thread must be considered in the next commit_resume | |
1196 | call. | |
1197 | ||
1198 | remote_target::commit_resume sends a vCont packet with actions for the | |
1199 | threads in the RESUMED_PENDING_VCONT state and moves them to the | |
1200 | VCONT_RESUMED state. | |
1201 | ||
1202 | When reporting a stop to the core for a thread, that thread is moved back | |
1203 | to the NOT_RESUMED state. */ | |
1204 | enum resume_state m_resume_state = resume_state::NOT_RESUMED; | |
1205 | ||
1206 | /* Extra info used if the thread is in the RESUMED_PENDING_VCONT state. */ | |
1207 | struct resumed_pending_vcont_info m_resumed_pending_vcont_info; | |
dc146f7c VP |
1208 | }; |
1209 | ||
de44f5a7 | 1210 | remote_state::remote_state () |
8d64371b | 1211 | : buf (400) |
de44f5a7 | 1212 | { |
de44f5a7 PA |
1213 | } |
1214 | ||
1215 | remote_state::~remote_state () | |
1216 | { | |
1217 | xfree (this->last_pass_packet); | |
1218 | xfree (this->last_program_signals_packet); | |
de44f5a7 PA |
1219 | xfree (this->finished_object); |
1220 | xfree (this->finished_annex); | |
cf792862 TT |
1221 | } |
1222 | ||
35b1e5cc SS |
1223 | /* Utility: generate error from an incoming stub packet. */ |
1224 | static void | |
1225 | trace_error (char *buf) | |
1226 | { | |
1227 | if (*buf++ != 'E') | |
1228 | return; /* not an error msg */ | |
1229 | switch (*buf) | |
1230 | { | |
1231 | case '1': /* malformed packet error */ | |
1232 | if (*++buf == '0') /* general case: */ | |
1233 | error (_("remote.c: error in outgoing packet.")); | |
1234 | else | |
1235 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1236 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1237 | default: |
1238 | error (_("Target returns error code '%s'."), buf); | |
1239 | } | |
1240 | } | |
1241 | ||
1242 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1243 | |
6b8edb51 PA |
1244 | char * |
1245 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1246 | { |
b6bb3468 PA |
1247 | struct remote_state *rs = get_remote_state (); |
1248 | ||
35b1e5cc SS |
1249 | do /* Loop on reply from remote stub. */ |
1250 | { | |
1251 | char *buf; | |
a744cf53 | 1252 | |
0df8b418 | 1253 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b TT |
1254 | getpkt (&rs->buf, 0); |
1255 | buf = rs->buf.data (); | |
ad91cd99 | 1256 | if (buf[0] == 'E') |
35b1e5cc | 1257 | trace_error (buf); |
61012eef | 1258 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1259 | { |
1260 | ULONGEST ul; | |
1261 | CORE_ADDR from, to, org_to; | |
256642e8 | 1262 | const char *p, *pp; |
dde08ee1 | 1263 | int adjusted_size = 0; |
7556d4a4 | 1264 | int relocated = 0; |
dde08ee1 PA |
1265 | |
1266 | p = buf + strlen ("qRelocInsn:"); | |
1267 | pp = unpack_varlen_hex (p, &ul); | |
1268 | if (*pp != ';') | |
cb91c06a | 1269 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1270 | from = ul; |
1271 | ||
1272 | p = pp + 1; | |
a9cbf802 | 1273 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1274 | to = ul; |
1275 | ||
1276 | org_to = to; | |
1277 | ||
a70b8144 | 1278 | try |
dde08ee1 | 1279 | { |
f5656ead | 1280 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 1281 | relocated = 1; |
dde08ee1 | 1282 | } |
230d2906 | 1283 | catch (const gdb_exception &ex) |
7556d4a4 PA |
1284 | { |
1285 | if (ex.error == MEMORY_ERROR) | |
1286 | { | |
1287 | /* Propagate memory errors silently back to the | |
1288 | target. The stub may have limited the range of | |
1289 | addresses we can write to, for example. */ | |
1290 | } | |
1291 | else | |
1292 | { | |
1293 | /* Something unexpectedly bad happened. Be verbose | |
1294 | so we can tell what, and propagate the error back | |
1295 | to the stub, so it doesn't get stuck waiting for | |
1296 | a response. */ | |
1297 | exception_fprintf (gdb_stderr, ex, | |
1298 | _("warning: relocating instruction: ")); | |
1299 | } | |
1300 | putpkt ("E01"); | |
1301 | } | |
1302 | ||
1303 | if (relocated) | |
dde08ee1 PA |
1304 | { |
1305 | adjusted_size = to - org_to; | |
1306 | ||
8d64371b | 1307 | xsnprintf (buf, rs->buf.size (), "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1308 | putpkt (buf); |
1309 | } | |
dde08ee1 | 1310 | } |
ad91cd99 | 1311 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1312 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1313 | else | |
0df8b418 | 1314 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1315 | } |
1316 | while (1); | |
1317 | } | |
3c3bea1c | 1318 | |
9d6eea31 PA |
1319 | struct remote_arch_state * |
1320 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1321 | { |
43c3a0e4 PA |
1322 | remote_arch_state *rsa; |
1323 | ||
1324 | auto it = this->m_arch_states.find (gdbarch); | |
1325 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1326 | { |
43c3a0e4 PA |
1327 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1328 | std::forward_as_tuple (gdbarch), | |
1329 | std::forward_as_tuple (gdbarch)); | |
1330 | rsa = &p.first->second; | |
9d6eea31 PA |
1331 | |
1332 | /* Make sure that the packet buffer is plenty big enough for | |
1333 | this architecture. */ | |
8d64371b TT |
1334 | if (this->buf.size () < rsa->remote_packet_size) |
1335 | this->buf.resize (2 * rsa->remote_packet_size); | |
9d6eea31 | 1336 | } |
43c3a0e4 PA |
1337 | else |
1338 | rsa = &it->second; | |
1339 | ||
1340 | return rsa; | |
d01949b6 AC |
1341 | } |
1342 | ||
0b83947e DJ |
1343 | /* Fetch the global remote target state. */ |
1344 | ||
6b8edb51 PA |
1345 | remote_state * |
1346 | remote_target::get_remote_state () | |
0b83947e DJ |
1347 | { |
1348 | /* Make sure that the remote architecture state has been | |
1349 | initialized, because doing so might reallocate rs->buf. Any | |
1350 | function which calls getpkt also needs to be mindful of changes | |
1351 | to rs->buf, but this call limits the number of places which run | |
1352 | into trouble. */ | |
3c69da40 | 1353 | m_remote_state.get_remote_arch_state (target_gdbarch ()); |
0b83947e | 1354 | |
3c69da40 | 1355 | return &m_remote_state; |
0b83947e DJ |
1356 | } |
1357 | ||
94585166 DB |
1358 | /* Fetch the remote exec-file from the current program space. */ |
1359 | ||
1360 | static const char * | |
1361 | get_remote_exec_file (void) | |
1362 | { | |
1363 | char *remote_exec_file; | |
1364 | ||
7b4a314f | 1365 | remote_exec_file = remote_pspace_data.get (current_program_space); |
94585166 DB |
1366 | if (remote_exec_file == NULL) |
1367 | return ""; | |
1368 | ||
1369 | return remote_exec_file; | |
1370 | } | |
1371 | ||
1372 | /* Set the remote exec file for PSPACE. */ | |
1373 | ||
1374 | static void | |
1375 | set_pspace_remote_exec_file (struct program_space *pspace, | |
7b4a314f | 1376 | const char *remote_exec_file) |
94585166 | 1377 | { |
7b4a314f | 1378 | char *old_file = remote_pspace_data.get (pspace); |
94585166 DB |
1379 | |
1380 | xfree (old_file); | |
7b4a314f | 1381 | remote_pspace_data.set (pspace, xstrdup (remote_exec_file)); |
94585166 DB |
1382 | } |
1383 | ||
1384 | /* The "set/show remote exec-file" set command hook. */ | |
1385 | ||
1386 | static void | |
eb4c3f4a | 1387 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1388 | struct cmd_list_element *c) |
1389 | { | |
e0700ba4 SM |
1390 | set_pspace_remote_exec_file (current_program_space, |
1391 | remote_exec_file_var.c_str ()); | |
94585166 DB |
1392 | } |
1393 | ||
1394 | /* The "set/show remote exec-file" show command hook. */ | |
1395 | ||
1396 | static void | |
1397 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1398 | struct cmd_list_element *cmd, const char *value) | |
1399 | { | |
6cb06a8c | 1400 | gdb_printf (file, "%s\n", get_remote_exec_file ()); |
94585166 DB |
1401 | } |
1402 | ||
c21236dc PA |
1403 | static int |
1404 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1405 | { |
74ca34ce | 1406 | int regnum, num_remote_regs, offset; |
74ca34ce | 1407 | struct packet_reg **remote_regs; |
ea9c271d | 1408 | |
4a22f64d | 1409 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1410 | { |
c21236dc | 1411 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1412 | |
4a22f64d | 1413 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1414 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1415 | r->pnum = -1; | |
1416 | else | |
1417 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1418 | ||
b323314b | 1419 | r->regnum = regnum; |
74ca34ce DJ |
1420 | } |
1421 | ||
1422 | /* Define the g/G packet format as the contents of each register | |
1423 | with a remote protocol number, in order of ascending protocol | |
1424 | number. */ | |
1425 | ||
224c3ddb | 1426 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1427 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1428 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1429 | regnum++) |
c21236dc PA |
1430 | if (regs[regnum].pnum != -1) |
1431 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1432 | |
39ef2f62 CB |
1433 | std::sort (remote_regs, remote_regs + num_remote_regs, |
1434 | [] (const packet_reg *a, const packet_reg *b) | |
1435 | { return a->pnum < b->pnum; }); | |
74ca34ce DJ |
1436 | |
1437 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1438 | { | |
1439 | remote_regs[regnum]->in_g_packet = 1; | |
1440 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1441 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1442 | } |
1443 | ||
c21236dc PA |
1444 | return offset; |
1445 | } | |
1446 | ||
1447 | /* Given the architecture described by GDBARCH, return the remote | |
1448 | protocol register's number and the register's offset in the g/G | |
1449 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1450 | If the target does not have a mapping for REGNUM, return false, | |
1451 | otherwise, return true. */ | |
1452 | ||
1453 | int | |
1454 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1455 | int *pnum, int *poffset) | |
1456 | { | |
c21236dc PA |
1457 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1458 | ||
b80406ac | 1459 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1460 | |
b80406ac | 1461 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1462 | |
1463 | *pnum = regs[regnum].pnum; | |
1464 | *poffset = regs[regnum].offset; | |
1465 | ||
c21236dc PA |
1466 | return *pnum != -1; |
1467 | } | |
1468 | ||
9d6eea31 | 1469 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1470 | { |
c21236dc PA |
1471 | /* Use the architecture to build a regnum<->pnum table, which will be |
1472 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1473 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1474 | |
74ca34ce DJ |
1475 | /* Record the maximum possible size of the g packet - it may turn out |
1476 | to be smaller. */ | |
9d6eea31 PA |
1477 | this->sizeof_g_packet |
1478 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1479 | |
0df8b418 | 1480 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1481 | remote stubs have a hardwired buffer size of 400 bytes |
1482 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1483 | as the maximum packet-size to ensure that the packet and an extra | |
1484 | NUL character can always fit in the buffer. This stops GDB | |
1485 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1486 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1487 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1488 | |
ea9c271d | 1489 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1490 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1491 | |
1492 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1493 | default, adjust the size accordingly. Remember that each byte is |
1494 | encoded as two characters. 32 is the overhead for the packet | |
1495 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1496 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1497 | little. */ |
9d6eea31 PA |
1498 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1499 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1500 | } |
1501 | ||
6b8edb51 PA |
1502 | /* Get a pointer to the current remote target. If not connected to a |
1503 | remote target, return NULL. */ | |
1504 | ||
1505 | static remote_target * | |
1506 | get_current_remote_target () | |
1507 | { | |
5b6d1e4f | 1508 | target_ops *proc_target = current_inferior ()->process_target (); |
6b8edb51 PA |
1509 | return dynamic_cast<remote_target *> (proc_target); |
1510 | } | |
1511 | ||
ea9c271d DJ |
1512 | /* Return the current allowed size of a remote packet. This is |
1513 | inferred from the current architecture, and should be used to | |
1514 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1515 | long |
1516 | remote_target::get_remote_packet_size () | |
ea9c271d | 1517 | { |
be2a5f71 | 1518 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1519 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1520 | |
be2a5f71 DJ |
1521 | if (rs->explicit_packet_size) |
1522 | return rs->explicit_packet_size; | |
1523 | ||
ea9c271d | 1524 | return rsa->remote_packet_size; |
d01949b6 AC |
1525 | } |
1526 | ||
ad10f812 | 1527 | static struct packet_reg * |
5cd63fda PA |
1528 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1529 | long regnum) | |
ad10f812 | 1530 | { |
5cd63fda | 1531 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1532 | return NULL; |
1533 | else | |
ad10f812 | 1534 | { |
ea9c271d | 1535 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1536 | |
b323314b AC |
1537 | gdb_assert (r->regnum == regnum); |
1538 | return r; | |
ad10f812 | 1539 | } |
ad10f812 AC |
1540 | } |
1541 | ||
1542 | static struct packet_reg * | |
5cd63fda PA |
1543 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1544 | LONGEST pnum) | |
ad10f812 | 1545 | { |
b323314b | 1546 | int i; |
a744cf53 | 1547 | |
5cd63fda | 1548 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1549 | { |
ea9c271d | 1550 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1551 | |
b323314b AC |
1552 | if (r->pnum == pnum) |
1553 | return r; | |
ad10f812 AC |
1554 | } |
1555 | return NULL; | |
d01949b6 AC |
1556 | } |
1557 | ||
9a7071a8 JB |
1558 | /* Allow the user to specify what sequence to send to the remote |
1559 | when he requests a program interruption: Although ^C is usually | |
1560 | what remote systems expect (this is the default, here), it is | |
1561 | sometimes preferable to send a break. On other systems such | |
1562 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1563 | is required in order to interrupt the execution. */ | |
1564 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1565 | const char interrupt_sequence_break[] = "BREAK"; | |
1566 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1567 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1568 | { |
1569 | interrupt_sequence_control_c, | |
1570 | interrupt_sequence_break, | |
1571 | interrupt_sequence_break_g, | |
1572 | NULL | |
1573 | }; | |
1574 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1575 | ||
1576 | static void | |
1577 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1578 | struct cmd_list_element *c, | |
1579 | const char *value) | |
1580 | { | |
1581 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
6cb06a8c TT |
1582 | gdb_printf (file, |
1583 | _("Send the ASCII ETX character (Ctrl-c) " | |
1584 | "to the remote target to interrupt the " | |
1585 | "execution of the program.\n")); | |
9a7071a8 | 1586 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
6cb06a8c TT |
1587 | gdb_printf (file, |
1588 | _("send a break signal to the remote target " | |
1589 | "to interrupt the execution of the program.\n")); | |
9a7071a8 | 1590 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
6cb06a8c TT |
1591 | gdb_printf (file, |
1592 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1593 | "the remote target to interrupt the execution " | |
1594 | "of Linux kernel.\n")); | |
9a7071a8 JB |
1595 | else |
1596 | internal_error (__FILE__, __LINE__, | |
1597 | _("Invalid value for interrupt_sequence_mode: %s."), | |
1598 | interrupt_sequence_mode); | |
1599 | } | |
6426a772 | 1600 | |
9a7071a8 JB |
1601 | /* This boolean variable specifies whether interrupt_sequence is sent |
1602 | to the remote target when gdb connects to it. | |
1603 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1604 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
491144b5 | 1605 | static bool interrupt_on_connect = false; |
c906108c | 1606 | |
9a7071a8 JB |
1607 | /* This variable is used to implement the "set/show remotebreak" commands. |
1608 | Since these commands are now deprecated in favor of "set/show remote | |
1609 | interrupt-sequence", it no longer has any effect on the code. */ | |
491144b5 | 1610 | static bool remote_break; |
c906108c | 1611 | |
9a7071a8 | 1612 | static void |
eb4c3f4a | 1613 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1614 | { |
1615 | if (remote_break) | |
1616 | interrupt_sequence_mode = interrupt_sequence_break; | |
1617 | else | |
1618 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1619 | } | |
1620 | ||
1621 | static void | |
1622 | show_remotebreak (struct ui_file *file, int from_tty, | |
1623 | struct cmd_list_element *c, | |
1624 | const char *value) | |
1625 | { | |
1626 | } | |
1627 | ||
c906108c SS |
1628 | /* This variable sets the number of bits in an address that are to be |
1629 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1630 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1631 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1632 | initial implementation of remote.c restricted the address sent in | |
1633 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1634 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1635 | address was never sent. Since fixing this bug may cause a break in | |
85102364 | 1636 | some remote targets this variable is principally provided to |
23860348 | 1637 | facilitate backward compatibility. */ |
c906108c | 1638 | |
883b9c6c | 1639 | static unsigned int remote_address_size; |
c906108c | 1640 | |
11cf8741 | 1641 | \f |
11cf8741 | 1642 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1643 | memory read/write packet. MIN (rsa->remote_packet_size, |
1644 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1645 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1646 | (speed up transfers). The variables ``preferred_*'' (the user |
1647 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1648 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1649 | |
1650 | struct memory_packet_config | |
1651 | { | |
a121b7c1 | 1652 | const char *name; |
11cf8741 JM |
1653 | long size; |
1654 | int fixed_p; | |
1655 | }; | |
1656 | ||
cc0be08f PA |
1657 | /* The default max memory-write-packet-size, when the setting is |
1658 | "fixed". The 16k is historical. (It came from older GDB's using | |
1659 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1660 | don't cope very well with large alloca calls.) */ | |
1661 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1662 | |
1663 | /* The minimum remote packet size for memory transfers. Ensures we | |
1664 | can write at least one byte. */ | |
1665 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1666 | ||
cc0be08f PA |
1667 | /* Get the memory packet size, assuming it is fixed. */ |
1668 | ||
1669 | static long | |
1670 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1671 | { | |
1672 | gdb_assert (config->fixed_p); | |
1673 | ||
1674 | if (config->size <= 0) | |
1675 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1676 | else | |
1677 | return config->size; | |
1678 | } | |
1679 | ||
11cf8741 JM |
1680 | /* Compute the current size of a read/write packet. Since this makes |
1681 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1682 | ||
6b8edb51 PA |
1683 | long |
1684 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 1685 | { |
d01949b6 | 1686 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1687 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1688 | |
11cf8741 JM |
1689 | long what_they_get; |
1690 | if (config->fixed_p) | |
cc0be08f | 1691 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1692 | else |
1693 | { | |
ea9c271d | 1694 | what_they_get = get_remote_packet_size (); |
23860348 | 1695 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1696 | if (config->size > 0 |
1697 | && what_they_get > config->size) | |
1698 | what_they_get = config->size; | |
be2a5f71 DJ |
1699 | |
1700 | /* Limit it to the size of the targets ``g'' response unless we have | |
1701 | permission from the stub to use a larger packet size. */ | |
1702 | if (rs->explicit_packet_size == 0 | |
1703 | && rsa->actual_register_packet_size > 0 | |
1704 | && what_they_get > rsa->actual_register_packet_size) | |
1705 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1706 | } |
a5c0808e PA |
1707 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1708 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1709 | |
1710 | /* Make sure there is room in the global buffer for this packet | |
1711 | (including its trailing NUL byte). */ | |
8d64371b TT |
1712 | if (rs->buf.size () < what_they_get + 1) |
1713 | rs->buf.resize (2 * what_they_get); | |
6d820c5c | 1714 | |
11cf8741 JM |
1715 | return what_they_get; |
1716 | } | |
1717 | ||
0df8b418 | 1718 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1719 | something really big then do a sanity check. */ |
11cf8741 JM |
1720 | |
1721 | static void | |
ac88e2de | 1722 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1723 | { |
1724 | int fixed_p = config->fixed_p; | |
1725 | long size = config->size; | |
a744cf53 | 1726 | |
11cf8741 | 1727 | if (args == NULL) |
8a3fe4f8 | 1728 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1729 | else if (strcmp (args, "hard") == 0 |
1730 | || strcmp (args, "fixed") == 0) | |
1731 | fixed_p = 1; | |
1732 | else if (strcmp (args, "soft") == 0 | |
1733 | || strcmp (args, "limit") == 0) | |
1734 | fixed_p = 0; | |
1735 | else | |
1736 | { | |
1737 | char *end; | |
a744cf53 | 1738 | |
11cf8741 JM |
1739 | size = strtoul (args, &end, 0); |
1740 | if (args == end) | |
8a3fe4f8 | 1741 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1742 | |
1743 | /* Instead of explicitly capping the size of a packet to or | |
1744 | disallowing it, the user is allowed to set the size to | |
1745 | something arbitrarily large. */ | |
11cf8741 | 1746 | } |
a5c0808e | 1747 | |
23860348 | 1748 | /* Extra checks? */ |
11cf8741 JM |
1749 | if (fixed_p && !config->fixed_p) |
1750 | { | |
cc0be08f PA |
1751 | /* So that the query shows the correct value. */ |
1752 | long query_size = (size <= 0 | |
1753 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
1754 | : size); | |
1755 | ||
e2e0b3e5 AC |
1756 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1757 | "of %ld bytes. Change the packet size? "), | |
cc0be08f | 1758 | config->name, query_size)) |
8a3fe4f8 | 1759 | error (_("Packet size not changed.")); |
11cf8741 | 1760 | } |
23860348 | 1761 | /* Update the config. */ |
11cf8741 JM |
1762 | config->fixed_p = fixed_p; |
1763 | config->size = size; | |
1764 | } | |
1765 | ||
1766 | static void | |
1767 | show_memory_packet_size (struct memory_packet_config *config) | |
1768 | { | |
cc0be08f | 1769 | if (config->size == 0) |
6cb06a8c | 1770 | gdb_printf (_("The %s is 0 (default). "), config->name); |
cc0be08f | 1771 | else |
6cb06a8c | 1772 | gdb_printf (_("The %s is %ld. "), config->name, config->size); |
11cf8741 | 1773 | if (config->fixed_p) |
6cb06a8c TT |
1774 | gdb_printf (_("Packets are fixed at %ld bytes.\n"), |
1775 | get_fixed_memory_packet_size (config)); | |
11cf8741 | 1776 | else |
cc0be08f | 1777 | { |
6b8edb51 | 1778 | remote_target *remote = get_current_remote_target (); |
cc0be08f | 1779 | |
6b8edb51 | 1780 | if (remote != NULL) |
6cb06a8c TT |
1781 | gdb_printf (_("Packets are limited to %ld bytes.\n"), |
1782 | remote->get_memory_packet_size (config)); | |
cc0be08f | 1783 | else |
0426ad51 TT |
1784 | gdb_puts ("The actual limit will be further reduced " |
1785 | "dependent on the target.\n"); | |
cc0be08f | 1786 | } |
11cf8741 JM |
1787 | } |
1788 | ||
5b6d1e4f | 1789 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1790 | static struct memory_packet_config memory_write_packet_config = |
1791 | { | |
1792 | "memory-write-packet-size", | |
1793 | }; | |
1794 | ||
1795 | static void | |
ac88e2de | 1796 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1797 | { |
1798 | set_memory_packet_size (args, &memory_write_packet_config); | |
1799 | } | |
1800 | ||
1801 | static void | |
ac88e2de | 1802 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1803 | { |
1804 | show_memory_packet_size (&memory_write_packet_config); | |
1805 | } | |
1806 | ||
055303e2 AB |
1807 | /* Show the number of hardware watchpoints that can be used. */ |
1808 | ||
1809 | static void | |
1810 | show_hardware_watchpoint_limit (struct ui_file *file, int from_tty, | |
1811 | struct cmd_list_element *c, | |
1812 | const char *value) | |
1813 | { | |
6cb06a8c TT |
1814 | gdb_printf (file, _("The maximum number of target hardware " |
1815 | "watchpoints is %s.\n"), value); | |
055303e2 AB |
1816 | } |
1817 | ||
1818 | /* Show the length limit (in bytes) for hardware watchpoints. */ | |
1819 | ||
1820 | static void | |
1821 | show_hardware_watchpoint_length_limit (struct ui_file *file, int from_tty, | |
1822 | struct cmd_list_element *c, | |
1823 | const char *value) | |
1824 | { | |
6cb06a8c TT |
1825 | gdb_printf (file, _("The maximum length (in bytes) of a target " |
1826 | "hardware watchpoint is %s.\n"), value); | |
055303e2 AB |
1827 | } |
1828 | ||
1829 | /* Show the number of hardware breakpoints that can be used. */ | |
1830 | ||
1831 | static void | |
1832 | show_hardware_breakpoint_limit (struct ui_file *file, int from_tty, | |
1833 | struct cmd_list_element *c, | |
1834 | const char *value) | |
1835 | { | |
6cb06a8c TT |
1836 | gdb_printf (file, _("The maximum number of target hardware " |
1837 | "breakpoints is %s.\n"), value); | |
055303e2 AB |
1838 | } |
1839 | ||
6cc8564b LM |
1840 | /* Controls the maximum number of characters to display in the debug output |
1841 | for each remote packet. The remaining characters are omitted. */ | |
1842 | ||
1843 | static int remote_packet_max_chars = 512; | |
1844 | ||
1845 | /* Show the maximum number of characters to display for each remote packet | |
1846 | when remote debugging is enabled. */ | |
1847 | ||
1848 | static void | |
1849 | show_remote_packet_max_chars (struct ui_file *file, int from_tty, | |
1850 | struct cmd_list_element *c, | |
1851 | const char *value) | |
1852 | { | |
6cb06a8c TT |
1853 | gdb_printf (file, _("Number of remote packet characters to " |
1854 | "display is %s.\n"), value); | |
6cc8564b LM |
1855 | } |
1856 | ||
6b8edb51 PA |
1857 | long |
1858 | remote_target::get_memory_write_packet_size () | |
11cf8741 JM |
1859 | { |
1860 | return get_memory_packet_size (&memory_write_packet_config); | |
1861 | } | |
1862 | ||
5b6d1e4f | 1863 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1864 | static struct memory_packet_config memory_read_packet_config = |
1865 | { | |
1866 | "memory-read-packet-size", | |
1867 | }; | |
1868 | ||
1869 | static void | |
ac88e2de | 1870 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1871 | { |
1872 | set_memory_packet_size (args, &memory_read_packet_config); | |
1873 | } | |
1874 | ||
1875 | static void | |
ac88e2de | 1876 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1877 | { |
1878 | show_memory_packet_size (&memory_read_packet_config); | |
1879 | } | |
1880 | ||
6b8edb51 PA |
1881 | long |
1882 | remote_target::get_memory_read_packet_size () | |
11cf8741 JM |
1883 | { |
1884 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1885 | |
11cf8741 JM |
1886 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1887 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1888 | increased beyond this. */ |
1889 | if (size > get_remote_packet_size ()) | |
1890 | size = get_remote_packet_size (); | |
11cf8741 JM |
1891 | return size; |
1892 | } | |
1893 | ||
11cf8741 | 1894 | \f |
5a2468f5 | 1895 | |
5a2468f5 JM |
1896 | struct packet_config |
1897 | { | |
bb572ddd DJ |
1898 | const char *name; |
1899 | const char *title; | |
4082afcc PA |
1900 | |
1901 | /* If auto, GDB auto-detects support for this packet or feature, | |
1902 | either through qSupported, or by trying the packet and looking | |
1903 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1904 | packet. If false, the packet is disabled. Configs that don't |
1905 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1906 | enum auto_boolean detect; |
4082afcc | 1907 | |
fcef6471 SM |
1908 | /* The "show remote foo-packet" command created for this packet. */ |
1909 | cmd_list_element *show_cmd; | |
1910 | ||
4082afcc | 1911 | /* Does the target support this packet? */ |
5a2468f5 JM |
1912 | enum packet_support support; |
1913 | }; | |
1914 | ||
4082afcc PA |
1915 | static enum packet_support packet_config_support (struct packet_config *config); |
1916 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1917 | |
1918 | static void | |
7514a661 | 1919 | show_packet_config_cmd (ui_file *file, struct packet_config *config) |
5a2468f5 | 1920 | { |
a121b7c1 | 1921 | const char *support = "internal-error"; |
a744cf53 | 1922 | |
4082afcc | 1923 | switch (packet_config_support (config)) |
5a2468f5 JM |
1924 | { |
1925 | case PACKET_ENABLE: | |
1926 | support = "enabled"; | |
1927 | break; | |
1928 | case PACKET_DISABLE: | |
1929 | support = "disabled"; | |
1930 | break; | |
1931 | case PACKET_SUPPORT_UNKNOWN: | |
1932 | support = "unknown"; | |
1933 | break; | |
1934 | } | |
1935 | switch (config->detect) | |
1936 | { | |
7f19b9a2 | 1937 | case AUTO_BOOLEAN_AUTO: |
6cb06a8c TT |
1938 | gdb_printf (file, |
1939 | _("Support for the `%s' packet " | |
1940 | "is auto-detected, currently %s.\n"), | |
1941 | config->name, support); | |
5a2468f5 | 1942 | break; |
7f19b9a2 AC |
1943 | case AUTO_BOOLEAN_TRUE: |
1944 | case AUTO_BOOLEAN_FALSE: | |
6cb06a8c TT |
1945 | gdb_printf (file, |
1946 | _("Support for the `%s' packet is currently %s.\n"), | |
1947 | config->name, support); | |
8e248173 | 1948 | break; |
5a2468f5 JM |
1949 | } |
1950 | } | |
1951 | ||
1952 | static void | |
bb572ddd DJ |
1953 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1954 | const char *title, int legacy) | |
d471ea57 | 1955 | { |
5a2468f5 JM |
1956 | config->name = name; |
1957 | config->title = title; | |
8579fd13 AB |
1958 | gdb::unique_xmalloc_ptr<char> set_doc |
1959 | = xstrprintf ("Set use of remote protocol `%s' (%s) packet.", | |
1960 | name, title); | |
1961 | gdb::unique_xmalloc_ptr<char> show_doc | |
1962 | = xstrprintf ("Show current use of remote protocol `%s' (%s) packet.", | |
1963 | name, title); | |
d471ea57 | 1964 | /* set/show TITLE-packet {auto,on,off} */ |
8579fd13 | 1965 | gdb::unique_xmalloc_ptr<char> cmd_name = xstrprintf ("%s-packet", title); |
5e84b7ee | 1966 | set_show_commands cmds |
8579fd13 AB |
1967 | = add_setshow_auto_boolean_cmd (cmd_name.release (), class_obscure, |
1968 | &config->detect, set_doc.get (), | |
1969 | show_doc.get (), NULL, /* help_doc */ | |
5e84b7ee SM |
1970 | NULL, |
1971 | show_remote_protocol_packet_cmd, | |
1972 | &remote_set_cmdlist, &remote_show_cmdlist); | |
fcef6471 | 1973 | config->show_cmd = cmds.show; |
5e84b7ee | 1974 | |
23860348 | 1975 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1976 | if (legacy) |
1977 | { | |
5f21c7aa AB |
1978 | /* It's not clear who should take ownership of the LEGACY_NAME string |
1979 | created below, so, for now, place the string into a static vector | |
1980 | which ensures the strings is released when GDB exits. */ | |
1981 | static std::vector<gdb::unique_xmalloc_ptr<char>> legacy_names; | |
1982 | gdb::unique_xmalloc_ptr<char> legacy_name | |
8579fd13 AB |
1983 | = xstrprintf ("%s-packet", name); |
1984 | add_alias_cmd (legacy_name.get (), cmds.set, class_obscure, 0, | |
bb572ddd | 1985 | &remote_set_cmdlist); |
8579fd13 | 1986 | add_alias_cmd (legacy_name.get (), cmds.show, class_obscure, 0, |
bb572ddd | 1987 | &remote_show_cmdlist); |
5f21c7aa | 1988 | legacy_names.emplace_back (std::move (legacy_name)); |
d471ea57 | 1989 | } |
5a2468f5 JM |
1990 | } |
1991 | ||
d471ea57 | 1992 | static enum packet_result |
a76d924d | 1993 | packet_check_result (const char *buf) |
5a2468f5 | 1994 | { |
d471ea57 | 1995 | if (buf[0] != '\0') |
5a2468f5 | 1996 | { |
d471ea57 | 1997 | /* The stub recognized the packet request. Check that the |
23860348 | 1998 | operation succeeded. */ |
a76d924d DJ |
1999 | if (buf[0] == 'E' |
2000 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
2001 | && buf[3] == '\0') | |
85102364 | 2002 | /* "Enn" - definitely an error. */ |
a76d924d DJ |
2003 | return PACKET_ERROR; |
2004 | ||
2005 | /* Always treat "E." as an error. This will be used for | |
2006 | more verbose error messages, such as E.memtypes. */ | |
2007 | if (buf[0] == 'E' && buf[1] == '.') | |
2008 | return PACKET_ERROR; | |
2009 | ||
2010 | /* The packet may or may not be OK. Just assume it is. */ | |
2011 | return PACKET_OK; | |
2012 | } | |
2013 | else | |
2014 | /* The stub does not support the packet. */ | |
2015 | return PACKET_UNKNOWN; | |
2016 | } | |
2017 | ||
8d64371b TT |
2018 | static enum packet_result |
2019 | packet_check_result (const gdb::char_vector &buf) | |
2020 | { | |
2021 | return packet_check_result (buf.data ()); | |
2022 | } | |
2023 | ||
a76d924d DJ |
2024 | static enum packet_result |
2025 | packet_ok (const char *buf, struct packet_config *config) | |
2026 | { | |
2027 | enum packet_result result; | |
2028 | ||
4082afcc PA |
2029 | if (config->detect != AUTO_BOOLEAN_TRUE |
2030 | && config->support == PACKET_DISABLE) | |
2031 | internal_error (__FILE__, __LINE__, | |
2032 | _("packet_ok: attempt to use a disabled packet")); | |
2033 | ||
a76d924d DJ |
2034 | result = packet_check_result (buf); |
2035 | switch (result) | |
2036 | { | |
2037 | case PACKET_OK: | |
2038 | case PACKET_ERROR: | |
2039 | /* The stub recognized the packet request. */ | |
4082afcc | 2040 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 2041 | { |
2189c312 SM |
2042 | remote_debug_printf ("Packet %s (%s) is supported", |
2043 | config->name, config->title); | |
d471ea57 | 2044 | config->support = PACKET_ENABLE; |
d471ea57 | 2045 | } |
a76d924d DJ |
2046 | break; |
2047 | case PACKET_UNKNOWN: | |
23860348 | 2048 | /* The stub does not support the packet. */ |
4082afcc PA |
2049 | if (config->detect == AUTO_BOOLEAN_AUTO |
2050 | && config->support == PACKET_ENABLE) | |
d471ea57 | 2051 | { |
4082afcc PA |
2052 | /* If the stub previously indicated that the packet was |
2053 | supported then there is a protocol error. */ | |
2054 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
2055 | config->name, config->title); | |
2056 | } | |
2057 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
2058 | { | |
2059 | /* The user set it wrong. */ | |
2060 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
2061 | config->name, config->title); | |
d471ea57 | 2062 | } |
4082afcc | 2063 | |
2189c312 SM |
2064 | remote_debug_printf ("Packet %s (%s) is NOT supported", |
2065 | config->name, config->title); | |
4082afcc | 2066 | config->support = PACKET_DISABLE; |
a76d924d | 2067 | break; |
5a2468f5 | 2068 | } |
a76d924d DJ |
2069 | |
2070 | return result; | |
5a2468f5 JM |
2071 | } |
2072 | ||
8d64371b TT |
2073 | static enum packet_result |
2074 | packet_ok (const gdb::char_vector &buf, struct packet_config *config) | |
2075 | { | |
2076 | return packet_ok (buf.data (), config); | |
2077 | } | |
2078 | ||
444abaca DJ |
2079 | enum { |
2080 | PACKET_vCont = 0, | |
2081 | PACKET_X, | |
2082 | PACKET_qSymbol, | |
2083 | PACKET_P, | |
2084 | PACKET_p, | |
2085 | PACKET_Z0, | |
2086 | PACKET_Z1, | |
2087 | PACKET_Z2, | |
2088 | PACKET_Z3, | |
2089 | PACKET_Z4, | |
15a201c8 | 2090 | PACKET_vFile_setfs, |
a6b151f1 DJ |
2091 | PACKET_vFile_open, |
2092 | PACKET_vFile_pread, | |
2093 | PACKET_vFile_pwrite, | |
2094 | PACKET_vFile_close, | |
2095 | PACKET_vFile_unlink, | |
b9e7b9c3 | 2096 | PACKET_vFile_readlink, |
0a93529c | 2097 | PACKET_vFile_fstat, |
0876f84a | 2098 | PACKET_qXfer_auxv, |
23181151 | 2099 | PACKET_qXfer_features, |
c78fa86a | 2100 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 2101 | PACKET_qXfer_libraries, |
2268b414 | 2102 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 2103 | PACKET_qXfer_memory_map, |
07e059b5 | 2104 | PACKET_qXfer_osdata, |
dc146f7c | 2105 | PACKET_qXfer_threads, |
0fb4aa4b | 2106 | PACKET_qXfer_statictrace_read, |
b3b9301e | 2107 | PACKET_qXfer_traceframe_info, |
169081d0 | 2108 | PACKET_qXfer_uib, |
711e434b | 2109 | PACKET_qGetTIBAddr, |
444abaca | 2110 | PACKET_qGetTLSAddr, |
be2a5f71 | 2111 | PACKET_qSupported, |
bd3eecc3 | 2112 | PACKET_qTStatus, |
89be2091 | 2113 | PACKET_QPassSignals, |
82075af2 | 2114 | PACKET_QCatchSyscalls, |
9b224c5e | 2115 | PACKET_QProgramSignals, |
bc3b087d | 2116 | PACKET_QSetWorkingDir, |
aefd8b33 | 2117 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
2118 | PACKET_QEnvironmentHexEncoded, |
2119 | PACKET_QEnvironmentReset, | |
2120 | PACKET_QEnvironmentUnset, | |
936d2992 | 2121 | PACKET_qCRC, |
08388c79 | 2122 | PACKET_qSearch_memory, |
2d717e4f DJ |
2123 | PACKET_vAttach, |
2124 | PACKET_vRun, | |
a6f3e723 | 2125 | PACKET_QStartNoAckMode, |
82f73884 | 2126 | PACKET_vKill, |
4aa995e1 PA |
2127 | PACKET_qXfer_siginfo_read, |
2128 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 2129 | PACKET_qAttached, |
4082afcc PA |
2130 | |
2131 | /* Support for conditional tracepoints. */ | |
782b2b07 | 2132 | PACKET_ConditionalTracepoints, |
4082afcc PA |
2133 | |
2134 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 2135 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
2136 | |
2137 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 2138 | PACKET_BreakpointCommands, |
4082afcc PA |
2139 | |
2140 | /* Support for fast tracepoints. */ | |
7a697b8d | 2141 | PACKET_FastTracepoints, |
4082afcc PA |
2142 | |
2143 | /* Support for static tracepoints. */ | |
0fb4aa4b | 2144 | PACKET_StaticTracepoints, |
4082afcc PA |
2145 | |
2146 | /* Support for installing tracepoints while a trace experiment is | |
2147 | running. */ | |
1e4d1764 | 2148 | PACKET_InstallInTrace, |
4082afcc | 2149 | |
40ab02ce MS |
2150 | PACKET_bc, |
2151 | PACKET_bs, | |
409873ef | 2152 | PACKET_TracepointSource, |
d914c394 | 2153 | PACKET_QAllow, |
78d85199 | 2154 | PACKET_qXfer_fdpic, |
03583c20 | 2155 | PACKET_QDisableRandomization, |
d1feda86 | 2156 | PACKET_QAgent, |
f6f899bf | 2157 | PACKET_QTBuffer_size, |
9accd112 MM |
2158 | PACKET_Qbtrace_off, |
2159 | PACKET_Qbtrace_bts, | |
b20a6524 | 2160 | PACKET_Qbtrace_pt, |
9accd112 | 2161 | PACKET_qXfer_btrace, |
4082afcc PA |
2162 | |
2163 | /* Support for the QNonStop packet. */ | |
2164 | PACKET_QNonStop, | |
2165 | ||
65706a29 PA |
2166 | /* Support for the QThreadEvents packet. */ |
2167 | PACKET_QThreadEvents, | |
2168 | ||
4082afcc PA |
2169 | /* Support for multi-process extensions. */ |
2170 | PACKET_multiprocess_feature, | |
2171 | ||
2172 | /* Support for enabling and disabling tracepoints while a trace | |
2173 | experiment is running. */ | |
2174 | PACKET_EnableDisableTracepoints_feature, | |
2175 | ||
2176 | /* Support for collecting strings using the tracenz bytecode. */ | |
2177 | PACKET_tracenz_feature, | |
2178 | ||
2179 | /* Support for continuing to run a trace experiment while GDB is | |
2180 | disconnected. */ | |
2181 | PACKET_DisconnectedTracing_feature, | |
2182 | ||
2183 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
2184 | PACKET_augmented_libraries_svr4_read_feature, | |
2185 | ||
f4abbc16 MM |
2186 | /* Support for the qXfer:btrace-conf:read packet. */ |
2187 | PACKET_qXfer_btrace_conf, | |
2188 | ||
d33501a5 MM |
2189 | /* Support for the Qbtrace-conf:bts:size packet. */ |
2190 | PACKET_Qbtrace_conf_bts_size, | |
2191 | ||
f7e6eed5 PA |
2192 | /* Support for swbreak+ feature. */ |
2193 | PACKET_swbreak_feature, | |
2194 | ||
2195 | /* Support for hwbreak+ feature. */ | |
2196 | PACKET_hwbreak_feature, | |
2197 | ||
89245bc0 DB |
2198 | /* Support for fork events. */ |
2199 | PACKET_fork_event_feature, | |
2200 | ||
2201 | /* Support for vfork events. */ | |
2202 | PACKET_vfork_event_feature, | |
2203 | ||
b20a6524 MM |
2204 | /* Support for the Qbtrace-conf:pt:size packet. */ |
2205 | PACKET_Qbtrace_conf_pt_size, | |
2206 | ||
94585166 DB |
2207 | /* Support for exec events. */ |
2208 | PACKET_exec_event_feature, | |
2209 | ||
750ce8d1 YQ |
2210 | /* Support for query supported vCont actions. */ |
2211 | PACKET_vContSupported, | |
2212 | ||
de979965 PA |
2213 | /* Support remote CTRL-C. */ |
2214 | PACKET_vCtrlC, | |
2215 | ||
f2faf941 PA |
2216 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
2217 | PACKET_no_resumed, | |
2218 | ||
2c2e7f87 LM |
2219 | /* Support for memory tagging, allocation tag fetch/store |
2220 | packets and the tag violation stop replies. */ | |
2221 | PACKET_memory_tagging_feature, | |
2222 | ||
444abaca DJ |
2223 | PACKET_MAX |
2224 | }; | |
506fb367 | 2225 | |
5b6d1e4f PA |
2226 | /* FIXME: needs to be per-remote-target. Ignoring this for now, |
2227 | assuming all remote targets are the same server (thus all support | |
2228 | the same packets). */ | |
444abaca | 2229 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 2230 | |
f7e6eed5 PA |
2231 | /* Returns the packet's corresponding "set remote foo-packet" command |
2232 | state. See struct packet_config for more details. */ | |
2233 | ||
2234 | static enum auto_boolean | |
2235 | packet_set_cmd_state (int packet) | |
2236 | { | |
2237 | return remote_protocol_packets[packet].detect; | |
2238 | } | |
2239 | ||
4082afcc PA |
2240 | /* Returns whether a given packet or feature is supported. This takes |
2241 | into account the state of the corresponding "set remote foo-packet" | |
2242 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2243 | |
4082afcc PA |
2244 | static enum packet_support |
2245 | packet_config_support (struct packet_config *config) | |
2246 | { | |
2247 | switch (config->detect) | |
444abaca | 2248 | { |
4082afcc PA |
2249 | case AUTO_BOOLEAN_TRUE: |
2250 | return PACKET_ENABLE; | |
2251 | case AUTO_BOOLEAN_FALSE: | |
2252 | return PACKET_DISABLE; | |
2253 | case AUTO_BOOLEAN_AUTO: | |
2254 | return config->support; | |
2255 | default: | |
557b4d76 | 2256 | gdb_assert_not_reached ("bad switch"); |
444abaca | 2257 | } |
4082afcc PA |
2258 | } |
2259 | ||
2260 | /* Same as packet_config_support, but takes the packet's enum value as | |
2261 | argument. */ | |
2262 | ||
2263 | static enum packet_support | |
2264 | packet_support (int packet) | |
2265 | { | |
2266 | struct packet_config *config = &remote_protocol_packets[packet]; | |
2267 | ||
2268 | return packet_config_support (config); | |
dc8acb97 MS |
2269 | } |
2270 | ||
5a2468f5 | 2271 | static void |
444abaca DJ |
2272 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2273 | struct cmd_list_element *c, | |
2274 | const char *value) | |
5a2468f5 | 2275 | { |
444abaca | 2276 | struct packet_config *packet; |
1d7fe7f0 | 2277 | gdb_assert (c->var.has_value ()); |
5a2468f5 | 2278 | |
444abaca DJ |
2279 | for (packet = remote_protocol_packets; |
2280 | packet < &remote_protocol_packets[PACKET_MAX]; | |
2281 | packet++) | |
2282 | { | |
fcef6471 | 2283 | if (c == packet->show_cmd) |
444abaca | 2284 | { |
7514a661 | 2285 | show_packet_config_cmd (file, packet); |
444abaca DJ |
2286 | return; |
2287 | } | |
2288 | } | |
9b20d036 | 2289 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 2290 | c->name); |
5a2468f5 JM |
2291 | } |
2292 | ||
d471ea57 AC |
2293 | /* Should we try one of the 'Z' requests? */ |
2294 | ||
2295 | enum Z_packet_type | |
2296 | { | |
2297 | Z_PACKET_SOFTWARE_BP, | |
2298 | Z_PACKET_HARDWARE_BP, | |
2299 | Z_PACKET_WRITE_WP, | |
2300 | Z_PACKET_READ_WP, | |
2301 | Z_PACKET_ACCESS_WP, | |
2302 | NR_Z_PACKET_TYPES | |
2303 | }; | |
96baa820 | 2304 | |
d471ea57 | 2305 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2306 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2307 | |
7f19b9a2 | 2308 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2309 | |
2310 | static void | |
eb4c3f4a | 2311 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2312 | struct cmd_list_element *c) |
96baa820 | 2313 | { |
d471ea57 | 2314 | int i; |
a744cf53 | 2315 | |
d471ea57 | 2316 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 2317 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
2318 | } |
2319 | ||
2320 | static void | |
08546159 AC |
2321 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2322 | struct cmd_list_element *c, | |
2323 | const char *value) | |
96baa820 | 2324 | { |
d471ea57 | 2325 | int i; |
a744cf53 | 2326 | |
d471ea57 AC |
2327 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2328 | { | |
7514a661 | 2329 | show_packet_config_cmd (file, &remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 2330 | } |
96baa820 JM |
2331 | } |
2332 | ||
4082afcc PA |
2333 | /* Returns true if the multi-process extensions are in effect. */ |
2334 | ||
2335 | static int | |
2336 | remote_multi_process_p (struct remote_state *rs) | |
2337 | { | |
2338 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
2339 | } | |
2340 | ||
de0d863e DB |
2341 | /* Returns true if fork events are supported. */ |
2342 | ||
2343 | static int | |
2344 | remote_fork_event_p (struct remote_state *rs) | |
2345 | { | |
2346 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
2347 | } | |
2348 | ||
c269dbdb DB |
2349 | /* Returns true if vfork events are supported. */ |
2350 | ||
2351 | static int | |
2352 | remote_vfork_event_p (struct remote_state *rs) | |
2353 | { | |
2354 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
2355 | } | |
2356 | ||
d46addbb DB |
2357 | /* Returns true if exec events are supported. */ |
2358 | ||
2359 | static int | |
2360 | remote_exec_event_p (struct remote_state *rs) | |
2361 | { | |
2362 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
2363 | } | |
2364 | ||
2c2e7f87 LM |
2365 | /* Returns true if memory tagging is supported, false otherwise. */ |
2366 | ||
2367 | static bool | |
2368 | remote_memory_tagging_p () | |
2369 | { | |
2370 | return packet_support (PACKET_memory_tagging_feature) == PACKET_ENABLE; | |
2371 | } | |
2372 | ||
cbb8991c DB |
2373 | /* Insert fork catchpoint target routine. If fork events are enabled |
2374 | then return success, nothing more to do. */ | |
2375 | ||
f6ac5f3d PA |
2376 | int |
2377 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
2378 | { |
2379 | struct remote_state *rs = get_remote_state (); | |
2380 | ||
2381 | return !remote_fork_event_p (rs); | |
2382 | } | |
2383 | ||
2384 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2385 | return success. */ | |
2386 | ||
f6ac5f3d PA |
2387 | int |
2388 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2389 | { |
2390 | return 0; | |
2391 | } | |
2392 | ||
2393 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2394 | then return success, nothing more to do. */ | |
2395 | ||
f6ac5f3d PA |
2396 | int |
2397 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
2398 | { |
2399 | struct remote_state *rs = get_remote_state (); | |
2400 | ||
2401 | return !remote_vfork_event_p (rs); | |
2402 | } | |
2403 | ||
2404 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2405 | return success. */ | |
2406 | ||
f6ac5f3d PA |
2407 | int |
2408 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2409 | { |
2410 | return 0; | |
2411 | } | |
2412 | ||
d46addbb DB |
2413 | /* Insert exec catchpoint target routine. If exec events are |
2414 | enabled, just return success. */ | |
2415 | ||
f6ac5f3d PA |
2416 | int |
2417 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
2418 | { |
2419 | struct remote_state *rs = get_remote_state (); | |
2420 | ||
2421 | return !remote_exec_event_p (rs); | |
2422 | } | |
2423 | ||
2424 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2425 | return success. */ | |
2426 | ||
f6ac5f3d PA |
2427 | int |
2428 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2429 | { |
2430 | return 0; | |
2431 | } | |
2432 | ||
c906108c SS |
2433 | \f |
2434 | ||
ffdd69cf TT |
2435 | /* Take advantage of the fact that the TID field is not used, to tag |
2436 | special ptids with it set to != 0. */ | |
2437 | static const ptid_t magic_null_ptid (42000, -1, 1); | |
2438 | static const ptid_t not_sent_ptid (42000, -2, 1); | |
2439 | static const ptid_t any_thread_ptid (42000, 0, 1); | |
79d7f229 | 2440 | |
0b16c5cf PA |
2441 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2442 | detach instead of killing it when bailing out). */ | |
2443 | ||
6b8edb51 PA |
2444 | int |
2445 | remote_target::remote_query_attached (int pid) | |
0b16c5cf PA |
2446 | { |
2447 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2448 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2449 | |
4082afcc | 2450 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2451 | return 0; |
2452 | ||
2453 | if (remote_multi_process_p (rs)) | |
8d64371b | 2454 | xsnprintf (rs->buf.data (), size, "qAttached:%x", pid); |
0b16c5cf | 2455 | else |
8d64371b | 2456 | xsnprintf (rs->buf.data (), size, "qAttached"); |
0b16c5cf PA |
2457 | |
2458 | putpkt (rs->buf); | |
8d64371b | 2459 | getpkt (&rs->buf, 0); |
0b16c5cf PA |
2460 | |
2461 | switch (packet_ok (rs->buf, | |
1554e9be | 2462 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
2463 | { |
2464 | case PACKET_OK: | |
8d64371b | 2465 | if (strcmp (rs->buf.data (), "1") == 0) |
0b16c5cf PA |
2466 | return 1; |
2467 | break; | |
2468 | case PACKET_ERROR: | |
8d64371b | 2469 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
0b16c5cf PA |
2470 | break; |
2471 | case PACKET_UNKNOWN: | |
2472 | break; | |
2473 | } | |
2474 | ||
2475 | return 0; | |
2476 | } | |
2477 | ||
49c62f2e PA |
2478 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2479 | has been invented by GDB, instead of reported by the target. Since | |
2480 | we can be connected to a remote system before before knowing about | |
2481 | any inferior, mark the target with execution when we find the first | |
2482 | inferior. If ATTACHED is 1, then we had just attached to this | |
2483 | inferior. If it is 0, then we just created this inferior. If it | |
2484 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2485 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2486 | attempt to open this inferior's executable as the main executable | |
2487 | if no main executable is open already. */ | |
1941c569 | 2488 | |
6b8edb51 | 2489 | inferior * |
9ab8741a | 2490 | remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 | 2491 | int try_open_exec) |
1941c569 | 2492 | { |
1941c569 PA |
2493 | struct inferior *inf; |
2494 | ||
0b16c5cf PA |
2495 | /* Check whether this process we're learning about is to be |
2496 | considered attached, or if is to be considered to have been | |
2497 | spawned by the stub. */ | |
2498 | if (attached == -1) | |
2499 | attached = remote_query_attached (pid); | |
2500 | ||
f5656ead | 2501 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2502 | { |
2503 | /* If the target shares code across all inferiors, then every | |
2504 | attach adds a new inferior. */ | |
2505 | inf = add_inferior (pid); | |
2506 | ||
2507 | /* ... and every inferior is bound to the same program space. | |
2508 | However, each inferior may still have its own address | |
2509 | space. */ | |
2510 | inf->aspace = maybe_new_address_space (); | |
2511 | inf->pspace = current_program_space; | |
2512 | } | |
2513 | else | |
2514 | { | |
2515 | /* In the traditional debugging scenario, there's a 1-1 match | |
2516 | between program/address spaces. We simply bind the inferior | |
2517 | to the program space's address space. */ | |
2518 | inf = current_inferior (); | |
78f2c40a PA |
2519 | |
2520 | /* However, if the current inferior is already bound to a | |
2521 | process, find some other empty inferior. */ | |
2522 | if (inf->pid != 0) | |
2523 | { | |
2524 | inf = nullptr; | |
2525 | for (inferior *it : all_inferiors ()) | |
2526 | if (it->pid == 0) | |
2527 | { | |
2528 | inf = it; | |
2529 | break; | |
2530 | } | |
2531 | } | |
2532 | if (inf == nullptr) | |
2533 | { | |
2534 | /* Since all inferiors were already bound to a process, add | |
2535 | a new inferior. */ | |
2536 | inf = add_inferior_with_spaces (); | |
2537 | } | |
2538 | switch_to_inferior_no_thread (inf); | |
02980c56 | 2539 | inf->push_target (this); |
6c95b8df PA |
2540 | inferior_appeared (inf, pid); |
2541 | } | |
1941c569 | 2542 | |
0b16c5cf | 2543 | inf->attach_flag = attached; |
49c62f2e | 2544 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2545 | |
1b6e6f5c GB |
2546 | /* If no main executable is currently open then attempt to |
2547 | open the file that was executed to create this inferior. */ | |
835205d0 | 2548 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2549 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2550 | |
a2fedca9 PW |
2551 | /* Check for exec file mismatch, and let the user solve it. */ |
2552 | validate_exec_file (1); | |
2553 | ||
1941c569 PA |
2554 | return inf; |
2555 | } | |
2556 | ||
7aabaf9d | 2557 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
5b6d1e4f PA |
2558 | static remote_thread_info *get_remote_thread_info (remote_target *target, |
2559 | ptid_t ptid); | |
85ad3aaf | 2560 | |
1941c569 | 2561 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
b622494e AB |
2562 | according to EXECUTING and RUNNING respectively. If SILENT_P (or the |
2563 | remote_state::starting_up flag) is true then the new thread is added | |
2564 | silently, otherwise the new thread will be announced to the user. */ | |
1941c569 | 2565 | |
00431a78 | 2566 | thread_info * |
b622494e AB |
2567 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing, |
2568 | bool silent_p) | |
c906108c | 2569 | { |
b7ea362b | 2570 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2571 | struct thread_info *thread; |
b7ea362b PA |
2572 | |
2573 | /* GDB historically didn't pull threads in the initial connection | |
2574 | setup. If the remote target doesn't even have a concept of | |
2575 | threads (e.g., a bare-metal target), even if internally we | |
2576 | consider that a single-threaded target, mentioning a new thread | |
2577 | might be confusing to the user. Be silent then, preserving the | |
2578 | age old behavior. */ | |
b622494e | 2579 | if (rs->starting_up || silent_p) |
5b6d1e4f | 2580 | thread = add_thread_silent (this, ptid); |
b7ea362b | 2581 | else |
5b6d1e4f | 2582 | thread = add_thread (this, ptid); |
1941c569 | 2583 | |
c9d22089 SM |
2584 | /* We start by assuming threads are resumed. That state then gets updated |
2585 | when we process a matching stop reply. */ | |
2586 | get_remote_thread_info (thread)->set_resumed (); | |
2587 | ||
5b6d1e4f PA |
2588 | set_executing (this, ptid, executing); |
2589 | set_running (this, ptid, running); | |
00431a78 PA |
2590 | |
2591 | return thread; | |
1941c569 PA |
2592 | } |
2593 | ||
2594 | /* Come here when we learn about a thread id from the remote target. | |
2595 | It may be the first time we hear about such thread, so take the | |
2596 | opportunity to add it to GDB's thread list. In case this is the | |
2597 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2598 | GDB's inferior list as well. EXECUTING indicates whether the |
2599 | thread is (internally) executing or stopped. */ | |
1941c569 | 2600 | |
6b8edb51 | 2601 | void |
8a82de58 | 2602 | remote_target::remote_notice_new_inferior (ptid_t currthread, bool executing) |
1941c569 | 2603 | { |
0d5b594f PA |
2604 | /* In non-stop mode, we assume new found threads are (externally) |
2605 | running until proven otherwise with a stop reply. In all-stop, | |
2606 | we can only get here if all threads are stopped. */ | |
8a82de58 | 2607 | bool running = target_is_non_stop_p (); |
0d5b594f | 2608 | |
c906108c SS |
2609 | /* If this is a new thread, add it to GDB's thread list. |
2610 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 | 2611 | |
5b6d1e4f | 2612 | thread_info *tp = find_thread_ptid (this, currthread); |
00431a78 | 2613 | if (tp != NULL && tp->state == THREAD_EXITED) |
82f73884 PA |
2614 | { |
2615 | /* We're seeing an event on a thread id we knew had exited. | |
2616 | This has to be a new thread reusing the old id. Add it. */ | |
b622494e | 2617 | remote_add_thread (currthread, running, executing, false); |
82f73884 PA |
2618 | return; |
2619 | } | |
2620 | ||
5b6d1e4f | 2621 | if (!in_thread_list (this, currthread)) |
c0a2216e | 2622 | { |
1941c569 | 2623 | struct inferior *inf = NULL; |
e99b03dc | 2624 | int pid = currthread.pid (); |
1941c569 | 2625 | |
0e998d96 | 2626 | if (inferior_ptid.is_pid () |
e99b03dc | 2627 | && pid == inferior_ptid.pid ()) |
c0a2216e PA |
2628 | { |
2629 | /* inferior_ptid has no thread member yet. This can happen | |
2630 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2631 | stub doesn't support qC. This is the first stop reported | |
2632 | after an attach, so this is the main thread. Update the | |
2633 | ptid in the thread list. */ | |
5b6d1e4f PA |
2634 | if (in_thread_list (this, ptid_t (pid))) |
2635 | thread_change_ptid (this, inferior_ptid, currthread); | |
bad34192 PA |
2636 | else |
2637 | { | |
0ac55310 | 2638 | thread_info *thr |
b622494e | 2639 | = remote_add_thread (currthread, running, executing, false); |
0ac55310 | 2640 | switch_to_thread (thr); |
bad34192 | 2641 | } |
dc146f7c | 2642 | return; |
c0a2216e | 2643 | } |
82f73884 | 2644 | |
d7e15655 | 2645 | if (magic_null_ptid == inferior_ptid) |
c0a2216e PA |
2646 | { |
2647 | /* inferior_ptid is not set yet. This can happen with the | |
2648 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2649 | doesn't support qC. This is the first stop reported | |
2650 | after an attach, so this is the main thread. Update the | |
2651 | ptid in the thread list. */ | |
5b6d1e4f | 2652 | thread_change_ptid (this, inferior_ptid, currthread); |
82f73884 | 2653 | return; |
c0a2216e | 2654 | } |
82f73884 | 2655 | |
29c87f7f PA |
2656 | /* When connecting to a target remote, or to a target |
2657 | extended-remote which already was debugging an inferior, we | |
2658 | may not know about it yet. Add it before adding its child | |
2659 | thread, so notifications are emitted in a sensible order. */ | |
5b6d1e4f | 2660 | if (find_inferior_pid (this, currthread.pid ()) == NULL) |
49c62f2e PA |
2661 | { |
2662 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 2663 | bool fake_pid_p = !remote_multi_process_p (rs); |
49c62f2e PA |
2664 | |
2665 | inf = remote_add_inferior (fake_pid_p, | |
e99b03dc | 2666 | currthread.pid (), -1, 1); |
49c62f2e | 2667 | } |
29c87f7f | 2668 | |
82f73884 | 2669 | /* This is really a new thread. Add it. */ |
00431a78 | 2670 | thread_info *new_thr |
b622494e | 2671 | = remote_add_thread (currthread, running, executing, false); |
1941c569 PA |
2672 | |
2673 | /* If we found a new inferior, let the common code do whatever | |
2674 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2675 | breakpoints), unless we're just setting up an all-stop |
2676 | connection. */ | |
1941c569 | 2677 | if (inf != NULL) |
b7ea362b PA |
2678 | { |
2679 | struct remote_state *rs = get_remote_state (); | |
2680 | ||
6efcd9a8 | 2681 | if (!rs->starting_up) |
00431a78 | 2682 | notice_new_inferior (new_thr, executing, 0); |
b7ea362b | 2683 | } |
c0a2216e | 2684 | } |
c906108c SS |
2685 | } |
2686 | ||
85ad3aaf | 2687 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2688 | |
7aabaf9d SM |
2689 | static remote_thread_info * |
2690 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2691 | { |
85ad3aaf | 2692 | gdb_assert (thread != NULL); |
dc146f7c | 2693 | |
85ad3aaf | 2694 | if (thread->priv == NULL) |
7aabaf9d | 2695 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2696 | |
7aabaf9d | 2697 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2698 | } |
2699 | ||
5b6d1e4f PA |
2700 | /* Return PTID's private thread data, creating it if necessary. */ |
2701 | ||
7aabaf9d | 2702 | static remote_thread_info * |
5b6d1e4f | 2703 | get_remote_thread_info (remote_target *target, ptid_t ptid) |
85ad3aaf | 2704 | { |
5b6d1e4f | 2705 | thread_info *thr = find_thread_ptid (target, ptid); |
00431a78 | 2706 | return get_remote_thread_info (thr); |
dc146f7c VP |
2707 | } |
2708 | ||
74531fed PA |
2709 | /* Call this function as a result of |
2710 | 1) A halt indication (T packet) containing a thread id | |
2711 | 2) A direct query of currthread | |
0df8b418 | 2712 | 3) Successful execution of set thread */ |
74531fed PA |
2713 | |
2714 | static void | |
47f8a51d | 2715 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2716 | { |
47f8a51d | 2717 | rs->general_thread = currthread; |
74531fed PA |
2718 | } |
2719 | ||
89be2091 DJ |
2720 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2721 | it can simply pass through to the inferior without reporting. */ | |
2722 | ||
f6ac5f3d | 2723 | void |
adc6a863 | 2724 | remote_target::pass_signals (gdb::array_view<const unsigned char> pass_signals) |
89be2091 | 2725 | { |
4082afcc | 2726 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2727 | { |
2728 | char *pass_packet, *p; | |
adc6a863 | 2729 | int count = 0; |
747dc59d | 2730 | struct remote_state *rs = get_remote_state (); |
89be2091 | 2731 | |
adc6a863 PA |
2732 | gdb_assert (pass_signals.size () < 256); |
2733 | for (size_t i = 0; i < pass_signals.size (); i++) | |
89be2091 | 2734 | { |
2455069d | 2735 | if (pass_signals[i]) |
89be2091 DJ |
2736 | count++; |
2737 | } | |
224c3ddb | 2738 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2739 | strcpy (pass_packet, "QPassSignals:"); |
2740 | p = pass_packet + strlen (pass_packet); | |
adc6a863 | 2741 | for (size_t i = 0; i < pass_signals.size (); i++) |
89be2091 | 2742 | { |
2455069d | 2743 | if (pass_signals[i]) |
89be2091 DJ |
2744 | { |
2745 | if (i >= 16) | |
2746 | *p++ = tohex (i >> 4); | |
2747 | *p++ = tohex (i & 15); | |
2748 | if (count) | |
2749 | *p++ = ';'; | |
2750 | else | |
2751 | break; | |
2752 | count--; | |
2753 | } | |
2754 | } | |
2755 | *p = 0; | |
747dc59d | 2756 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2757 | { |
89be2091 | 2758 | putpkt (pass_packet); |
8d64371b | 2759 | getpkt (&rs->buf, 0); |
8dc5b319 | 2760 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
84d53fa9 | 2761 | xfree (rs->last_pass_packet); |
747dc59d | 2762 | rs->last_pass_packet = pass_packet; |
89be2091 DJ |
2763 | } |
2764 | else | |
2765 | xfree (pass_packet); | |
2766 | } | |
2767 | } | |
2768 | ||
82075af2 JS |
2769 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2770 | to report syscalls to GDB. */ | |
2771 | ||
f6ac5f3d PA |
2772 | int |
2773 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2774 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2775 | { |
b80406ac | 2776 | const char *catch_packet; |
82075af2 JS |
2777 | enum packet_result result; |
2778 | int n_sysno = 0; | |
2779 | ||
2780 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2781 | { | |
2782 | /* Not supported. */ | |
2783 | return 1; | |
2784 | } | |
2785 | ||
649a140c | 2786 | if (needed && any_count == 0) |
82075af2 | 2787 | { |
649a140c PA |
2788 | /* Count how many syscalls are to be caught. */ |
2789 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2790 | { |
649a140c | 2791 | if (syscall_counts[i] != 0) |
82075af2 JS |
2792 | n_sysno++; |
2793 | } | |
2794 | } | |
2795 | ||
2189c312 SM |
2796 | remote_debug_printf ("pid %d needed %d any_count %d n_sysno %d", |
2797 | pid, needed, any_count, n_sysno); | |
82075af2 | 2798 | |
1b81856f | 2799 | std::string built_packet; |
82075af2 JS |
2800 | if (needed) |
2801 | { | |
2802 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2803 | characters for a sysno. If the resulting packet size is too | |
2804 | big, fallback on the non-selective packet. */ | |
2805 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2806 | built_packet.reserve (maxpktsz); |
2807 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2808 | if (any_count == 0) |
82075af2 | 2809 | { |
649a140c PA |
2810 | /* Add in each syscall to be caught. */ |
2811 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2812 | { |
649a140c PA |
2813 | if (syscall_counts[i] != 0) |
2814 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2815 | } |
2816 | } | |
1b81856f | 2817 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2818 | { |
2819 | /* catch_packet too big. Fallback to less efficient | |
2820 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2821 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2822 | } |
b80406ac | 2823 | else |
1b81856f | 2824 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2825 | } |
2826 | else | |
b80406ac | 2827 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2828 | |
b80406ac | 2829 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2830 | |
b80406ac | 2831 | putpkt (catch_packet); |
8d64371b | 2832 | getpkt (&rs->buf, 0); |
b80406ac TT |
2833 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); |
2834 | if (result == PACKET_OK) | |
2835 | return 0; | |
2836 | else | |
2837 | return -1; | |
82075af2 JS |
2838 | } |
2839 | ||
9b224c5e PA |
2840 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2841 | signals it should pass through to the inferior when detaching. */ | |
2842 | ||
f6ac5f3d | 2843 | void |
adc6a863 | 2844 | remote_target::program_signals (gdb::array_view<const unsigned char> signals) |
9b224c5e | 2845 | { |
4082afcc | 2846 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2847 | { |
2848 | char *packet, *p; | |
adc6a863 | 2849 | int count = 0; |
5e4a05c4 | 2850 | struct remote_state *rs = get_remote_state (); |
9b224c5e | 2851 | |
adc6a863 PA |
2852 | gdb_assert (signals.size () < 256); |
2853 | for (size_t i = 0; i < signals.size (); i++) | |
9b224c5e PA |
2854 | { |
2855 | if (signals[i]) | |
2856 | count++; | |
2857 | } | |
224c3ddb | 2858 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2859 | strcpy (packet, "QProgramSignals:"); |
2860 | p = packet + strlen (packet); | |
adc6a863 | 2861 | for (size_t i = 0; i < signals.size (); i++) |
9b224c5e PA |
2862 | { |
2863 | if (signal_pass_state (i)) | |
2864 | { | |
2865 | if (i >= 16) | |
2866 | *p++ = tohex (i >> 4); | |
2867 | *p++ = tohex (i & 15); | |
2868 | if (count) | |
2869 | *p++ = ';'; | |
2870 | else | |
2871 | break; | |
2872 | count--; | |
2873 | } | |
2874 | } | |
2875 | *p = 0; | |
5e4a05c4 TT |
2876 | if (!rs->last_program_signals_packet |
2877 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2878 | { |
9b224c5e | 2879 | putpkt (packet); |
8d64371b | 2880 | getpkt (&rs->buf, 0); |
8dc5b319 | 2881 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2882 | xfree (rs->last_program_signals_packet); |
2883 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2884 | } |
2885 | else | |
2886 | xfree (packet); | |
2887 | } | |
2888 | } | |
2889 | ||
79d7f229 PA |
2890 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2891 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2892 | thread. If GEN is set, set the general thread, if not, then set | |
2893 | the step/continue thread. */ | |
6b8edb51 PA |
2894 | void |
2895 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 2896 | { |
d01949b6 | 2897 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2898 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
8d64371b TT |
2899 | char *buf = rs->buf.data (); |
2900 | char *endbuf = buf + get_remote_packet_size (); | |
c906108c | 2901 | |
d7e15655 | 2902 | if (state == ptid) |
c906108c SS |
2903 | return; |
2904 | ||
79d7f229 PA |
2905 | *buf++ = 'H'; |
2906 | *buf++ = gen ? 'g' : 'c'; | |
d7e15655 | 2907 | if (ptid == magic_null_ptid) |
79d7f229 | 2908 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2909 | else if (ptid == any_thread_ptid) |
79d7f229 | 2910 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2911 | else if (ptid == minus_one_ptid) |
79d7f229 PA |
2912 | xsnprintf (buf, endbuf - buf, "-1"); |
2913 | else | |
82f73884 | 2914 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2915 | putpkt (rs->buf); |
8d64371b | 2916 | getpkt (&rs->buf, 0); |
c906108c | 2917 | if (gen) |
47f8a51d | 2918 | rs->general_thread = ptid; |
c906108c | 2919 | else |
47f8a51d | 2920 | rs->continue_thread = ptid; |
c906108c | 2921 | } |
79d7f229 | 2922 | |
6b8edb51 PA |
2923 | void |
2924 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
2925 | { |
2926 | set_thread (ptid, 1); | |
2927 | } | |
2928 | ||
6b8edb51 PA |
2929 | void |
2930 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
2931 | { |
2932 | set_thread (ptid, 0); | |
2933 | } | |
2934 | ||
3c9c4b83 PA |
2935 | /* Change the remote current process. Which thread within the process |
2936 | ends up selected isn't important, as long as it is the same process | |
2937 | as what INFERIOR_PTID points to. | |
2938 | ||
2939 | This comes from that fact that there is no explicit notion of | |
2940 | "selected process" in the protocol. The selected process for | |
2941 | general operations is the process the selected general thread | |
2942 | belongs to. */ | |
2943 | ||
6b8edb51 PA |
2944 | void |
2945 | remote_target::set_general_process () | |
3c9c4b83 PA |
2946 | { |
2947 | struct remote_state *rs = get_remote_state (); | |
2948 | ||
2949 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2950 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2951 | return; |
2952 | ||
2953 | /* We only need to change the remote current thread if it's pointing | |
2954 | at some other process. */ | |
e99b03dc | 2955 | if (rs->general_thread.pid () != inferior_ptid.pid ()) |
3c9c4b83 PA |
2956 | set_general_thread (inferior_ptid); |
2957 | } | |
2958 | ||
c906108c | 2959 | \f |
7d1a114c PA |
2960 | /* Return nonzero if this is the main thread that we made up ourselves |
2961 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2962 | |
2963 | static int | |
f6ac5f3d | 2964 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2965 | { |
d7e15655 | 2966 | if (ptid == magic_null_ptid) |
c0a2216e PA |
2967 | /* The main thread is always alive. */ |
2968 | return 1; | |
2969 | ||
e38504b3 | 2970 | if (ptid.pid () != 0 && ptid.lwp () == 0) |
c0a2216e PA |
2971 | /* The main thread is always alive. This can happen after a |
2972 | vAttach, if the remote side doesn't support | |
2973 | multi-threading. */ | |
2974 | return 1; | |
2975 | ||
7d1a114c PA |
2976 | return 0; |
2977 | } | |
2978 | ||
2979 | /* Return nonzero if the thread PTID is still alive on the remote | |
2980 | system. */ | |
2981 | ||
57810aa7 | 2982 | bool |
f6ac5f3d | 2983 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
2984 | { |
2985 | struct remote_state *rs = get_remote_state (); | |
2986 | char *p, *endp; | |
2987 | ||
2988 | /* Check if this is a thread that we made up ourselves to model | |
2989 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2990 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2991 | return 1; |
2992 | ||
8d64371b TT |
2993 | p = rs->buf.data (); |
2994 | endp = p + get_remote_packet_size (); | |
82f73884 PA |
2995 | |
2996 | *p++ = 'T'; | |
2997 | write_ptid (p, endp, ptid); | |
2998 | ||
2e9f7625 | 2999 | putpkt (rs->buf); |
8d64371b | 3000 | getpkt (&rs->buf, 0); |
2e9f7625 | 3001 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
3002 | } |
3003 | ||
79efa585 SM |
3004 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
3005 | The thread_info object owns the memory for the name. */ | |
3006 | ||
f6ac5f3d PA |
3007 | const char * |
3008 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
3009 | { |
3010 | if (info->priv != NULL) | |
a9334058 SM |
3011 | { |
3012 | const std::string &name = get_remote_thread_info (info)->name; | |
3013 | return !name.empty () ? name.c_str () : NULL; | |
3014 | } | |
79efa585 SM |
3015 | |
3016 | return NULL; | |
3017 | } | |
3018 | ||
c906108c SS |
3019 | /* About these extended threadlist and threadinfo packets. They are |
3020 | variable length packets but, the fields within them are often fixed | |
30baf67b | 3021 | length. They are redundant enough to send over UDP as is the |
c906108c SS |
3022 | remote protocol in general. There is a matching unit test module |
3023 | in libstub. */ | |
3024 | ||
23860348 | 3025 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 3026 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 3027 | changable. */ |
cce74817 JM |
3028 | |
3029 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 3030 | Plan to fix this. */ |
cce74817 | 3031 | |
23860348 | 3032 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 3033 | |
9d1f7ab2 | 3034 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 3035 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
3036 | |
3037 | struct gdb_ext_thread_info | |
c5aa993b | 3038 | { |
23860348 | 3039 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 3040 | int active; /* Has state interesting to GDB? |
23860348 | 3041 | regs, stack. */ |
2bc416ba | 3042 | char display[256]; /* Brief state display, name, |
cedea757 | 3043 | blocked/suspended. */ |
23860348 | 3044 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 3045 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 3046 | whatever. */ |
c5aa993b | 3047 | }; |
cce74817 JM |
3048 | |
3049 | /* The volume of remote transfers can be limited by submitting | |
3050 | a mask containing bits specifying the desired information. | |
3051 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 3052 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
3053 | |
3054 | #define TAG_THREADID 1 | |
3055 | #define TAG_EXISTS 2 | |
3056 | #define TAG_DISPLAY 4 | |
3057 | #define TAG_THREADNAME 8 | |
c5aa993b | 3058 | #define TAG_MOREDISPLAY 16 |
cce74817 | 3059 | |
23860348 | 3060 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 3061 | |
cecb1912 | 3062 | static const char *unpack_nibble (const char *buf, int *val); |
cce74817 | 3063 | |
cecb1912 | 3064 | static const char *unpack_byte (const char *buf, int *value); |
cce74817 | 3065 | |
a14ed312 | 3066 | static char *pack_int (char *buf, int value); |
cce74817 | 3067 | |
cecb1912 | 3068 | static const char *unpack_int (const char *buf, int *value); |
cce74817 | 3069 | |
cecb1912 | 3070 | static const char *unpack_string (const char *src, char *dest, int length); |
cce74817 | 3071 | |
23860348 | 3072 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 3073 | |
cecb1912 | 3074 | static const char *unpack_threadid (const char *inbuf, threadref *id); |
cce74817 | 3075 | |
23860348 | 3076 | void int_to_threadref (threadref *id, int value); |
cce74817 | 3077 | |
23860348 | 3078 | static int threadref_to_int (threadref *ref); |
cce74817 | 3079 | |
23860348 | 3080 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 3081 | |
23860348 | 3082 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 3083 | |
2bc416ba | 3084 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 3085 | threadref *id); |
cce74817 | 3086 | |
a14ed312 KB |
3087 | static char *pack_threadlist_request (char *pkt, int startflag, |
3088 | int threadcount, | |
23860348 | 3089 | threadref *nextthread); |
cce74817 | 3090 | |
23860348 | 3091 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 3092 | |
82f73884 PA |
3093 | |
3094 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
3095 | buffer we're allowed to write to. Returns | |
3096 | BUF+CHARACTERS_WRITTEN. */ | |
3097 | ||
6b8edb51 PA |
3098 | char * |
3099 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
3100 | { |
3101 | int pid, tid; | |
3102 | struct remote_state *rs = get_remote_state (); | |
3103 | ||
3104 | if (remote_multi_process_p (rs)) | |
3105 | { | |
e99b03dc | 3106 | pid = ptid.pid (); |
82f73884 PA |
3107 | if (pid < 0) |
3108 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
3109 | else | |
3110 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
3111 | } | |
e38504b3 | 3112 | tid = ptid.lwp (); |
82f73884 PA |
3113 | if (tid < 0) |
3114 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
3115 | else | |
3116 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
3117 | ||
3118 | return buf; | |
3119 | } | |
3120 | ||
256642e8 PA |
3121 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
3122 | last parsed char. Returns null_ptid if no thread id is found, and | |
3123 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
3124 | |
3125 | static ptid_t | |
256642e8 | 3126 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 3127 | { |
256642e8 PA |
3128 | const char *p = buf; |
3129 | const char *pp; | |
82f73884 | 3130 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
3131 | |
3132 | if (*p == 'p') | |
3133 | { | |
3134 | /* Multi-process ptid. */ | |
3135 | pp = unpack_varlen_hex (p + 1, &pid); | |
3136 | if (*pp != '.') | |
b37520b6 | 3137 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
3138 | |
3139 | p = pp; | |
3140 | pp = unpack_varlen_hex (p + 1, &tid); | |
3141 | if (obuf) | |
3142 | *obuf = pp; | |
184ea2f7 | 3143 | return ptid_t (pid, tid); |
82f73884 PA |
3144 | } |
3145 | ||
3146 | /* No multi-process. Just a tid. */ | |
3147 | pp = unpack_varlen_hex (p, &tid); | |
3148 | ||
c9f35b34 KB |
3149 | /* Return null_ptid when no thread id is found. */ |
3150 | if (p == pp) | |
3151 | { | |
3152 | if (obuf) | |
3153 | *obuf = pp; | |
3154 | return null_ptid; | |
3155 | } | |
3156 | ||
2f761de2 TBA |
3157 | /* Since the stub is not sending a process id, default to what's |
3158 | current_inferior, unless it doesn't have a PID yet. If so, | |
ca19bf23 PA |
3159 | then since there's no way to know the pid of the reported |
3160 | threads, use the magic number. */ | |
2f761de2 TBA |
3161 | inferior *inf = current_inferior (); |
3162 | if (inf->pid == 0) | |
e99b03dc | 3163 | pid = magic_null_ptid.pid (); |
ca19bf23 | 3164 | else |
2f761de2 | 3165 | pid = inf->pid; |
82f73884 PA |
3166 | |
3167 | if (obuf) | |
3168 | *obuf = pp; | |
184ea2f7 | 3169 | return ptid_t (pid, tid); |
82f73884 PA |
3170 | } |
3171 | ||
c906108c | 3172 | static int |
fba45db2 | 3173 | stubhex (int ch) |
c906108c SS |
3174 | { |
3175 | if (ch >= 'a' && ch <= 'f') | |
3176 | return ch - 'a' + 10; | |
3177 | if (ch >= '0' && ch <= '9') | |
3178 | return ch - '0'; | |
3179 | if (ch >= 'A' && ch <= 'F') | |
3180 | return ch - 'A' + 10; | |
3181 | return -1; | |
3182 | } | |
3183 | ||
3184 | static int | |
cecb1912 | 3185 | stub_unpack_int (const char *buff, int fieldlength) |
c906108c SS |
3186 | { |
3187 | int nibble; | |
3188 | int retval = 0; | |
3189 | ||
3190 | while (fieldlength) | |
3191 | { | |
3192 | nibble = stubhex (*buff++); | |
3193 | retval |= nibble; | |
3194 | fieldlength--; | |
3195 | if (fieldlength) | |
3196 | retval = retval << 4; | |
3197 | } | |
3198 | return retval; | |
3199 | } | |
3200 | ||
cecb1912 SM |
3201 | static const char * |
3202 | unpack_nibble (const char *buf, int *val) | |
c906108c | 3203 | { |
b7589f7d | 3204 | *val = fromhex (*buf++); |
c906108c SS |
3205 | return buf; |
3206 | } | |
3207 | ||
cecb1912 SM |
3208 | static const char * |
3209 | unpack_byte (const char *buf, int *value) | |
c906108c SS |
3210 | { |
3211 | *value = stub_unpack_int (buf, 2); | |
3212 | return buf + 2; | |
3213 | } | |
3214 | ||
3215 | static char * | |
fba45db2 | 3216 | pack_int (char *buf, int value) |
c906108c SS |
3217 | { |
3218 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3219 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3220 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3221 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3222 | return buf; | |
3223 | } | |
3224 | ||
cecb1912 SM |
3225 | static const char * |
3226 | unpack_int (const char *buf, int *value) | |
c906108c SS |
3227 | { |
3228 | *value = stub_unpack_int (buf, 8); | |
3229 | return buf + 8; | |
3230 | } | |
3231 | ||
23860348 | 3232 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3233 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3234 | |
3235 | static char * | |
fba45db2 | 3236 | pack_string (char *pkt, char *string) |
c906108c SS |
3237 | { |
3238 | char ch; | |
3239 | int len; | |
3240 | ||
3241 | len = strlen (string); | |
3242 | if (len > 200) | |
23860348 | 3243 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3244 | pkt = pack_hex_byte (pkt, len); |
3245 | while (len-- > 0) | |
3246 | { | |
3247 | ch = *string++; | |
3248 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3249 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3250 | *pkt++ = ch; |
3251 | } | |
3252 | return pkt; | |
3253 | } | |
3254 | #endif /* 0 (unused) */ | |
3255 | ||
cecb1912 SM |
3256 | static const char * |
3257 | unpack_string (const char *src, char *dest, int length) | |
c906108c SS |
3258 | { |
3259 | while (length--) | |
3260 | *dest++ = *src++; | |
3261 | *dest = '\0'; | |
3262 | return src; | |
3263 | } | |
3264 | ||
3265 | static char * | |
fba45db2 | 3266 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3267 | { |
3268 | char *limit; | |
3269 | unsigned char *altid; | |
3270 | ||
3271 | altid = (unsigned char *) id; | |
3272 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3273 | while (pkt < limit) | |
3274 | pkt = pack_hex_byte (pkt, *altid++); | |
3275 | return pkt; | |
3276 | } | |
3277 | ||
3278 | ||
cecb1912 SM |
3279 | static const char * |
3280 | unpack_threadid (const char *inbuf, threadref *id) | |
c906108c SS |
3281 | { |
3282 | char *altref; | |
cecb1912 | 3283 | const char *limit = inbuf + BUF_THREAD_ID_SIZE; |
c906108c SS |
3284 | int x, y; |
3285 | ||
3286 | altref = (char *) id; | |
3287 | ||
3288 | while (inbuf < limit) | |
3289 | { | |
3290 | x = stubhex (*inbuf++); | |
3291 | y = stubhex (*inbuf++); | |
3292 | *altref++ = (x << 4) | y; | |
3293 | } | |
3294 | return inbuf; | |
3295 | } | |
3296 | ||
3297 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3298 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3299 | to use 64bit thread references internally. This is an adapter |
3300 | function. */ | |
3301 | ||
3302 | void | |
fba45db2 | 3303 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3304 | { |
3305 | unsigned char *scan; | |
3306 | ||
3307 | scan = (unsigned char *) id; | |
3308 | { | |
3309 | int i = 4; | |
3310 | while (i--) | |
3311 | *scan++ = 0; | |
3312 | } | |
3313 | *scan++ = (value >> 24) & 0xff; | |
3314 | *scan++ = (value >> 16) & 0xff; | |
3315 | *scan++ = (value >> 8) & 0xff; | |
3316 | *scan++ = (value & 0xff); | |
3317 | } | |
3318 | ||
3319 | static int | |
fba45db2 | 3320 | threadref_to_int (threadref *ref) |
c906108c SS |
3321 | { |
3322 | int i, value = 0; | |
3323 | unsigned char *scan; | |
3324 | ||
cfd77fa1 | 3325 | scan = *ref; |
c906108c SS |
3326 | scan += 4; |
3327 | i = 4; | |
3328 | while (i-- > 0) | |
3329 | value = (value << 8) | ((*scan++) & 0xff); | |
3330 | return value; | |
3331 | } | |
3332 | ||
3333 | static void | |
fba45db2 | 3334 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3335 | { |
3336 | int i; | |
3337 | unsigned char *csrc, *cdest; | |
3338 | ||
3339 | csrc = (unsigned char *) src; | |
3340 | cdest = (unsigned char *) dest; | |
3341 | i = 8; | |
3342 | while (i--) | |
3343 | *cdest++ = *csrc++; | |
3344 | } | |
3345 | ||
3346 | static int | |
fba45db2 | 3347 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3348 | { |
23860348 | 3349 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3350 | #if 0 |
3351 | unsigned char *srcp, *destp; | |
3352 | int i, result; | |
3353 | srcp = (char *) src; | |
3354 | destp = (char *) dest; | |
3355 | ||
3356 | result = 1; | |
3357 | while (i-- > 0) | |
3358 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3359 | return result; | |
3360 | #endif | |
3361 | return 1; | |
3362 | } | |
3363 | ||
3364 | /* | |
c5aa993b JM |
3365 | threadid:1, # always request threadid |
3366 | context_exists:2, | |
3367 | display:4, | |
3368 | unique_name:8, | |
3369 | more_display:16 | |
3370 | */ | |
c906108c SS |
3371 | |
3372 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3373 | ||
3374 | static char * | |
fba45db2 | 3375 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3376 | { |
23860348 MS |
3377 | *pkt++ = 'q'; /* Info Query */ |
3378 | *pkt++ = 'P'; /* process or thread info */ | |
3379 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3380 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3381 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3382 | return pkt; |
3383 | } | |
3384 | ||
23860348 | 3385 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3386 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3387 | add more fields as time goes by. */ |
c906108c | 3388 | |
23860348 | 3389 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3390 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3391 | fetch registers and its stack? */ |
c5aa993b | 3392 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3393 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3394 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3395 | the process. */ |
c906108c | 3396 | |
6b8edb51 | 3397 | int |
cecb1912 | 3398 | remote_target::remote_unpack_thread_info_response (const char *pkt, |
6b8edb51 PA |
3399 | threadref *expectedref, |
3400 | gdb_ext_thread_info *info) | |
c906108c | 3401 | { |
d01949b6 | 3402 | struct remote_state *rs = get_remote_state (); |
c906108c | 3403 | int mask, length; |
cfd77fa1 | 3404 | int tag; |
c906108c | 3405 | threadref ref; |
cecb1912 | 3406 | const char *limit = pkt + rs->buf.size (); /* Plausible parsing limit. */ |
c906108c SS |
3407 | int retval = 1; |
3408 | ||
23860348 | 3409 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3410 | info->active = 0; |
3411 | info->display[0] = '\0'; | |
3412 | info->shortname[0] = '\0'; | |
3413 | info->more_display[0] = '\0'; | |
3414 | ||
23860348 MS |
3415 | /* Assume the characters indicating the packet type have been |
3416 | stripped. */ | |
c906108c SS |
3417 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3418 | pkt = unpack_threadid (pkt, &ref); | |
3419 | ||
3420 | if (mask == 0) | |
8a3fe4f8 | 3421 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3422 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3423 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3424 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3425 | return 0; |
3426 | } | |
3427 | copy_threadref (&info->threadid, &ref); | |
3428 | ||
405feb71 | 3429 | /* Loop on tagged fields , try to bail if something goes wrong. */ |
c906108c | 3430 | |
23860348 MS |
3431 | /* Packets are terminated with nulls. */ |
3432 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3433 | { |
3434 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3435 | pkt = unpack_byte (pkt, &length); /* length */ |
3436 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3437 | { |
8a3fe4f8 | 3438 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3439 | retval = 0; |
3440 | break; | |
3441 | } | |
3442 | if (tag == TAG_THREADID) | |
3443 | { | |
3444 | if (length != 16) | |
3445 | { | |
8a3fe4f8 | 3446 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3447 | retval = 0; |
3448 | break; | |
3449 | } | |
3450 | pkt = unpack_threadid (pkt, &ref); | |
3451 | mask = mask & ~TAG_THREADID; | |
3452 | continue; | |
3453 | } | |
3454 | if (tag == TAG_EXISTS) | |
3455 | { | |
3456 | info->active = stub_unpack_int (pkt, length); | |
3457 | pkt += length; | |
3458 | mask = mask & ~(TAG_EXISTS); | |
3459 | if (length > 8) | |
3460 | { | |
8a3fe4f8 | 3461 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3462 | retval = 0; |
3463 | break; | |
3464 | } | |
3465 | continue; | |
3466 | } | |
3467 | if (tag == TAG_THREADNAME) | |
3468 | { | |
3469 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3470 | mask = mask & ~TAG_THREADNAME; | |
3471 | continue; | |
3472 | } | |
3473 | if (tag == TAG_DISPLAY) | |
3474 | { | |
3475 | pkt = unpack_string (pkt, &info->display[0], length); | |
3476 | mask = mask & ~TAG_DISPLAY; | |
3477 | continue; | |
3478 | } | |
3479 | if (tag == TAG_MOREDISPLAY) | |
3480 | { | |
3481 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3482 | mask = mask & ~TAG_MOREDISPLAY; | |
3483 | continue; | |
3484 | } | |
8a3fe4f8 | 3485 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3486 | break; /* Not a tag we know about. */ |
c906108c SS |
3487 | } |
3488 | return retval; | |
3489 | } | |
3490 | ||
6b8edb51 PA |
3491 | int |
3492 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3493 | int fieldset, | |
3494 | gdb_ext_thread_info *info) | |
c906108c | 3495 | { |
d01949b6 | 3496 | struct remote_state *rs = get_remote_state (); |
c906108c | 3497 | int result; |
c906108c | 3498 | |
8d64371b | 3499 | pack_threadinfo_request (rs->buf.data (), fieldset, threadid); |
2e9f7625 | 3500 | putpkt (rs->buf); |
8d64371b | 3501 | getpkt (&rs->buf, 0); |
3084dd77 PA |
3502 | |
3503 | if (rs->buf[0] == '\0') | |
3504 | return 0; | |
3505 | ||
8d64371b | 3506 | result = remote_unpack_thread_info_response (&rs->buf[2], |
23860348 | 3507 | threadid, info); |
c906108c SS |
3508 | return result; |
3509 | } | |
3510 | ||
c906108c SS |
3511 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3512 | ||
3513 | static char * | |
fba45db2 KB |
3514 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3515 | threadref *nextthread) | |
c906108c SS |
3516 | { |
3517 | *pkt++ = 'q'; /* info query packet */ | |
3518 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3519 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3520 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3521 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3522 | *pkt = '\0'; | |
3523 | return pkt; | |
3524 | } | |
3525 | ||
3526 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3527 | ||
6b8edb51 | 3528 | int |
cecb1912 | 3529 | remote_target::parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
3530 | threadref *original_echo, |
3531 | threadref *resultlist, | |
3532 | int *doneflag) | |
c906108c | 3533 | { |
d01949b6 | 3534 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3535 | int count, resultcount, done; |
3536 | ||
3537 | resultcount = 0; | |
3538 | /* Assume the 'q' and 'M chars have been stripped. */ | |
cecb1912 | 3539 | const char *limit = pkt + (rs->buf.size () - BUF_THREAD_ID_SIZE); |
23860348 | 3540 | /* done parse past here */ |
c906108c SS |
3541 | pkt = unpack_byte (pkt, &count); /* count field */ |
3542 | pkt = unpack_nibble (pkt, &done); | |
3543 | /* The first threadid is the argument threadid. */ | |
3544 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3545 | while ((count-- > 0) && (pkt < limit)) | |
3546 | { | |
3547 | pkt = unpack_threadid (pkt, resultlist++); | |
3548 | if (resultcount++ >= result_limit) | |
3549 | break; | |
3550 | } | |
3551 | if (doneflag) | |
3552 | *doneflag = done; | |
3553 | return resultcount; | |
3554 | } | |
3555 | ||
6dc54d91 PA |
3556 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3557 | qL packet is not supported, 0 on error and 1 on success. */ | |
3558 | ||
6b8edb51 PA |
3559 | int |
3560 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3561 | int result_limit, int *done, int *result_count, | |
3562 | threadref *threadlist) | |
c906108c | 3563 | { |
d01949b6 | 3564 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3565 | int result = 1; |
3566 | ||
405feb71 | 3567 | /* Truncate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3568 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3569 | >= get_remote_packet_size ()) | |
ea9c271d | 3570 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3571 | |
8d64371b TT |
3572 | pack_threadlist_request (rs->buf.data (), startflag, result_limit, |
3573 | nextthread); | |
6d820c5c | 3574 | putpkt (rs->buf); |
8d64371b TT |
3575 | getpkt (&rs->buf, 0); |
3576 | if (rs->buf[0] == '\0') | |
6dc54d91 PA |
3577 | { |
3578 | /* Packet not supported. */ | |
3579 | return -1; | |
3580 | } | |
3581 | ||
3582 | *result_count = | |
8d64371b | 3583 | parse_threadlist_response (&rs->buf[2], result_limit, |
6dc54d91 | 3584 | &rs->echo_nextthread, threadlist, done); |
c906108c | 3585 | |
0d031856 | 3586 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3587 | { |
23860348 | 3588 | /* FIXME: This is a good reason to drop the packet. */ |
405feb71 TV |
3589 | /* Possibly, there is a duplicate response. */ |
3590 | /* Possibilities : | |
dda83cd7 SM |
3591 | retransmit immediatly - race conditions |
3592 | retransmit after timeout - yes | |
3593 | exit | |
3594 | wait for packet, then exit | |
c906108c | 3595 | */ |
8a3fe4f8 | 3596 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3597 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3598 | } |
3599 | if (*result_count <= 0) | |
3600 | { | |
3601 | if (*done != 1) | |
3602 | { | |
8a3fe4f8 | 3603 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3604 | result = 0; |
3605 | } | |
3606 | return result; /* break; */ | |
3607 | } | |
3608 | if (*result_count > result_limit) | |
3609 | { | |
3610 | *result_count = 0; | |
8a3fe4f8 | 3611 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3612 | return 0; |
3613 | } | |
3614 | return result; | |
3615 | } | |
3616 | ||
6dc54d91 PA |
3617 | /* Fetch the list of remote threads, with the qL packet, and call |
3618 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3619 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3620 | STEPFUNCTION returns false. If the packet is not supported, | |
3621 | returns -1. */ | |
c906108c | 3622 | |
6b8edb51 PA |
3623 | int |
3624 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3625 | void *context, int looplimit) | |
c906108c | 3626 | { |
0d031856 | 3627 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3628 | int done, i, result_count; |
3629 | int startflag = 1; | |
3630 | int result = 1; | |
3631 | int loopcount = 0; | |
c906108c SS |
3632 | |
3633 | done = 0; | |
3634 | while (!done) | |
3635 | { | |
3636 | if (loopcount++ > looplimit) | |
3637 | { | |
3638 | result = 0; | |
8a3fe4f8 | 3639 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3640 | break; |
3641 | } | |
6dc54d91 PA |
3642 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3643 | MAXTHREADLISTRESULTS, | |
3644 | &done, &result_count, | |
3645 | rs->resultthreadlist); | |
3646 | if (result <= 0) | |
3647 | break; | |
23860348 | 3648 | /* Clear for later iterations. */ |
c906108c SS |
3649 | startflag = 0; |
3650 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3651 | if (result_count >= 1) | |
0d031856 TT |
3652 | copy_threadref (&rs->nextthread, |
3653 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3654 | i = 0; |
3655 | while (result_count--) | |
6dc54d91 PA |
3656 | { |
3657 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3658 | { | |
3659 | result = 0; | |
3660 | break; | |
3661 | } | |
3662 | } | |
c906108c SS |
3663 | } |
3664 | return result; | |
3665 | } | |
3666 | ||
6dc54d91 PA |
3667 | /* A thread found on the remote target. */ |
3668 | ||
21fe1c75 | 3669 | struct thread_item |
6dc54d91 | 3670 | { |
21fe1c75 SM |
3671 | explicit thread_item (ptid_t ptid_) |
3672 | : ptid (ptid_) | |
3673 | {} | |
3674 | ||
3675 | thread_item (thread_item &&other) = default; | |
3676 | thread_item &operator= (thread_item &&other) = default; | |
3677 | ||
3678 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3679 | ||
6dc54d91 PA |
3680 | /* The thread's PTID. */ |
3681 | ptid_t ptid; | |
3682 | ||
21fe1c75 SM |
3683 | /* The thread's extra info. */ |
3684 | std::string extra; | |
6dc54d91 | 3685 | |
21fe1c75 SM |
3686 | /* The thread's name. */ |
3687 | std::string name; | |
79efa585 | 3688 | |
6dc54d91 | 3689 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3690 | int core = -1; |
f6327dcb KB |
3691 | |
3692 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3693 | gdb::byte_vector thread_handle; |
21fe1c75 | 3694 | }; |
6dc54d91 PA |
3695 | |
3696 | /* Context passed around to the various methods listing remote | |
3697 | threads. As new threads are found, they're added to the ITEMS | |
3698 | vector. */ | |
3699 | ||
3700 | struct threads_listing_context | |
3701 | { | |
21fe1c75 SM |
3702 | /* Return true if this object contains an entry for a thread with ptid |
3703 | PTID. */ | |
6dc54d91 | 3704 | |
21fe1c75 SM |
3705 | bool contains_thread (ptid_t ptid) const |
3706 | { | |
3707 | auto match_ptid = [&] (const thread_item &item) | |
3708 | { | |
3709 | return item.ptid == ptid; | |
3710 | }; | |
80134cf5 | 3711 | |
21fe1c75 SM |
3712 | auto it = std::find_if (this->items.begin (), |
3713 | this->items.end (), | |
3714 | match_ptid); | |
80134cf5 | 3715 | |
21fe1c75 SM |
3716 | return it != this->items.end (); |
3717 | } | |
80134cf5 | 3718 | |
21fe1c75 | 3719 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3720 | |
21fe1c75 SM |
3721 | void remove_thread (ptid_t ptid) |
3722 | { | |
3723 | auto match_ptid = [&] (const thread_item &item) | |
3724 | { | |
dda83cd7 | 3725 | return item.ptid == ptid; |
21fe1c75 | 3726 | }; |
cbb8991c | 3727 | |
21fe1c75 SM |
3728 | auto it = std::remove_if (this->items.begin (), |
3729 | this->items.end (), | |
3730 | match_ptid); | |
cbb8991c | 3731 | |
21fe1c75 SM |
3732 | if (it != this->items.end ()) |
3733 | this->items.erase (it); | |
3734 | } | |
3735 | ||
3736 | /* The threads found on the remote target. */ | |
3737 | std::vector<thread_item> items; | |
3738 | }; | |
cbb8991c | 3739 | |
c906108c | 3740 | static int |
6dc54d91 | 3741 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3742 | { |
19ba03f4 SM |
3743 | struct threads_listing_context *context |
3744 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3745 | int pid = inferior_ptid.pid (); |
3746 | int lwp = threadref_to_int (ref); | |
3747 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3748 | |
21fe1c75 | 3749 | context->items.emplace_back (ptid); |
6dc54d91 | 3750 | |
c906108c SS |
3751 | return 1; /* continue iterator */ |
3752 | } | |
3753 | ||
3754 | #define CRAZY_MAX_THREADS 1000 | |
3755 | ||
6b8edb51 PA |
3756 | ptid_t |
3757 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3758 | { |
d01949b6 | 3759 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3760 | |
3761 | putpkt ("qC"); | |
8d64371b | 3762 | getpkt (&rs->buf, 0); |
2e9f7625 | 3763 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3764 | { |
256642e8 | 3765 | const char *obuf; |
c9f35b34 KB |
3766 | ptid_t result; |
3767 | ||
3768 | result = read_ptid (&rs->buf[2], &obuf); | |
2189c312 SM |
3769 | if (*obuf != '\0') |
3770 | remote_debug_printf ("warning: garbage in qC reply"); | |
c9f35b34 KB |
3771 | |
3772 | return result; | |
3773 | } | |
c906108c SS |
3774 | else |
3775 | return oldpid; | |
3776 | } | |
3777 | ||
6dc54d91 | 3778 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3779 | |
6b8edb51 PA |
3780 | int |
3781 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3782 | { |
6dc54d91 PA |
3783 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3784 | CRAZY_MAX_THREADS) >= 0) | |
3785 | return 1; | |
3786 | ||
3787 | return 0; | |
c906108c SS |
3788 | } |
3789 | ||
dc146f7c VP |
3790 | #if defined(HAVE_LIBEXPAT) |
3791 | ||
dc146f7c VP |
3792 | static void |
3793 | start_thread (struct gdb_xml_parser *parser, | |
3794 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3795 | void *user_data, |
3796 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3797 | { |
19ba03f4 SM |
3798 | struct threads_listing_context *data |
3799 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3800 | struct gdb_xml_value *attr; |
dc146f7c | 3801 | |
4d0fdd9b | 3802 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3803 | ptid_t ptid = read_ptid (id, NULL); |
3804 | ||
3805 | data->items.emplace_back (ptid); | |
3806 | thread_item &item = data->items.back (); | |
dc146f7c | 3807 | |
3d2c1d41 PA |
3808 | attr = xml_find_attribute (attributes, "core"); |
3809 | if (attr != NULL) | |
4d0fdd9b | 3810 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3811 | |
79efa585 | 3812 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3813 | if (attr != NULL) |
4d0fdd9b | 3814 | item.name = (const char *) attr->value.get (); |
79efa585 | 3815 | |
f6327dcb KB |
3816 | attr = xml_find_attribute (attributes, "handle"); |
3817 | if (attr != NULL) | |
4d0fdd9b | 3818 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3819 | } |
3820 | ||
3821 | static void | |
3822 | end_thread (struct gdb_xml_parser *parser, | |
3823 | const struct gdb_xml_element *element, | |
3824 | void *user_data, const char *body_text) | |
3825 | { | |
19ba03f4 SM |
3826 | struct threads_listing_context *data |
3827 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3828 | |
21fe1c75 SM |
3829 | if (body_text != NULL && *body_text != '\0') |
3830 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3831 | } |
3832 | ||
3833 | const struct gdb_xml_attribute thread_attributes[] = { | |
3834 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3835 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3836 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3837 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3838 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3839 | }; | |
3840 | ||
3841 | const struct gdb_xml_element thread_children[] = { | |
3842 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3843 | }; | |
3844 | ||
3845 | const struct gdb_xml_element threads_children[] = { | |
3846 | { "thread", thread_attributes, thread_children, | |
3847 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3848 | start_thread, end_thread }, | |
3849 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3850 | }; | |
3851 | ||
3852 | const struct gdb_xml_element threads_elements[] = { | |
3853 | { "threads", NULL, threads_children, | |
3854 | GDB_XML_EF_NONE, NULL, NULL }, | |
3855 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3856 | }; | |
3857 | ||
3858 | #endif | |
3859 | ||
6dc54d91 | 3860 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3861 | |
6b8edb51 PA |
3862 | int |
3863 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 3864 | { |
dc146f7c | 3865 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3866 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3867 | { |
9018be22 | 3868 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 3869 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3870 | |
9018be22 | 3871 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3872 | { |
6dc54d91 | 3873 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3874 | threads_elements, xml->data (), context); |
dc146f7c VP |
3875 | } |
3876 | ||
6dc54d91 | 3877 | return 1; |
dc146f7c VP |
3878 | } |
3879 | #endif | |
3880 | ||
6dc54d91 PA |
3881 | return 0; |
3882 | } | |
3883 | ||
3884 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3885 | ||
6b8edb51 PA |
3886 | int |
3887 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
3888 | { |
3889 | struct remote_state *rs = get_remote_state (); | |
3890 | ||
b80fafe3 | 3891 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3892 | { |
256642e8 | 3893 | const char *bufp; |
6dc54d91 | 3894 | |
9d1f7ab2 | 3895 | putpkt ("qfThreadInfo"); |
8d64371b TT |
3896 | getpkt (&rs->buf, 0); |
3897 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3898 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3899 | { |
9d1f7ab2 MS |
3900 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3901 | { | |
3902 | do | |
3903 | { | |
21fe1c75 SM |
3904 | ptid_t ptid = read_ptid (bufp, &bufp); |
3905 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3906 | } |
3907 | while (*bufp++ == ','); /* comma-separated list */ | |
3908 | putpkt ("qsThreadInfo"); | |
8d64371b TT |
3909 | getpkt (&rs->buf, 0); |
3910 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3911 | } |
6dc54d91 PA |
3912 | return 1; |
3913 | } | |
3914 | else | |
3915 | { | |
3916 | /* Packet not recognized. */ | |
3917 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3918 | } |
3919 | } | |
3920 | ||
6dc54d91 PA |
3921 | return 0; |
3922 | } | |
3923 | ||
a05575d3 TBA |
3924 | /* Return true if INF only has one non-exited thread. */ |
3925 | ||
3926 | static bool | |
3927 | has_single_non_exited_thread (inferior *inf) | |
3928 | { | |
3929 | int count = 0; | |
3930 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) | |
3931 | if (++count > 1) | |
3932 | break; | |
3933 | return count == 1; | |
3934 | } | |
3935 | ||
e8032dde | 3936 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3937 | targets. */ |
3938 | ||
f6ac5f3d PA |
3939 | void |
3940 | remote_target::update_thread_list () | |
6dc54d91 | 3941 | { |
6dc54d91 | 3942 | struct threads_listing_context context; |
ab970af1 | 3943 | int got_list = 0; |
e8032dde | 3944 | |
6dc54d91 PA |
3945 | /* We have a few different mechanisms to fetch the thread list. Try |
3946 | them all, starting with the most preferred one first, falling | |
3947 | back to older methods. */ | |
6b8edb51 PA |
3948 | if (remote_get_threads_with_qxfer (&context) |
3949 | || remote_get_threads_with_qthreadinfo (&context) | |
3950 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 3951 | { |
ab970af1 PA |
3952 | got_list = 1; |
3953 | ||
21fe1c75 | 3954 | if (context.items.empty () |
f6ac5f3d | 3955 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3956 | { |
3957 | /* Some targets don't really support threads, but still | |
3958 | reply an (empty) thread list in response to the thread | |
3959 | listing packets, instead of replying "packet not | |
3960 | supported". Exit early so we don't delete the main | |
3961 | thread. */ | |
7d1a114c PA |
3962 | return; |
3963 | } | |
3964 | ||
ab970af1 PA |
3965 | /* CONTEXT now holds the current thread list on the remote |
3966 | target end. Delete GDB-side threads no longer found on the | |
3967 | target. */ | |
08036331 | 3968 | for (thread_info *tp : all_threads_safe ()) |
cbb8991c | 3969 | { |
5b6d1e4f PA |
3970 | if (tp->inf->process_target () != this) |
3971 | continue; | |
3972 | ||
21fe1c75 | 3973 | if (!context.contains_thread (tp->ptid)) |
ab970af1 | 3974 | { |
a05575d3 TBA |
3975 | /* Do not remove the thread if it is the last thread in |
3976 | the inferior. This situation happens when we have a | |
3977 | pending exit process status to process. Otherwise we | |
3978 | may end up with a seemingly live inferior (i.e. pid | |
3979 | != 0) that has no threads. */ | |
3980 | if (has_single_non_exited_thread (tp->inf)) | |
3981 | continue; | |
3982 | ||
ab970af1 | 3983 | /* Not found. */ |
00431a78 | 3984 | delete_thread (tp); |
ab970af1 | 3985 | } |
cbb8991c DB |
3986 | } |
3987 | ||
3988 | /* Remove any unreported fork child threads from CONTEXT so | |
3989 | that we don't interfere with follow fork, which is where | |
3990 | creation of such threads is handled. */ | |
3991 | remove_new_fork_children (&context); | |
74531fed | 3992 | |
ab970af1 | 3993 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3994 | for (thread_item &item : context.items) |
6dc54d91 | 3995 | { |
21fe1c75 | 3996 | if (item.ptid != null_ptid) |
6dc54d91 | 3997 | { |
6dc54d91 | 3998 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3999 | executing until proven otherwise with a stop reply. |
4000 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 4001 | stopped. */ |
8a82de58 | 4002 | bool executing = target_is_non_stop_p (); |
6dc54d91 | 4003 | |
21fe1c75 | 4004 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 4005 | |
5b6d1e4f | 4006 | thread_info *tp = find_thread_ptid (this, item.ptid); |
00431a78 | 4007 | remote_thread_info *info = get_remote_thread_info (tp); |
21fe1c75 | 4008 | info->core = item.core; |
7aabaf9d SM |
4009 | info->extra = std::move (item.extra); |
4010 | info->name = std::move (item.name); | |
4011 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
4012 | } |
4013 | } | |
4014 | } | |
4015 | ||
ab970af1 PA |
4016 | if (!got_list) |
4017 | { | |
4018 | /* If no thread listing method is supported, then query whether | |
4019 | each known thread is alive, one by one, with the T packet. | |
4020 | If the target doesn't support threads at all, then this is a | |
4021 | no-op. See remote_thread_alive. */ | |
4022 | prune_threads (); | |
4023 | } | |
9d1f7ab2 MS |
4024 | } |
4025 | ||
802188a7 | 4026 | /* |
9d1f7ab2 MS |
4027 | * Collect a descriptive string about the given thread. |
4028 | * The target may say anything it wants to about the thread | |
4029 | * (typically info about its blocked / runnable state, name, etc.). | |
4030 | * This string will appear in the info threads display. | |
802188a7 | 4031 | * |
9d1f7ab2 MS |
4032 | * Optional: targets are not required to implement this function. |
4033 | */ | |
4034 | ||
f6ac5f3d PA |
4035 | const char * |
4036 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 4037 | { |
d01949b6 | 4038 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
4039 | int set; |
4040 | threadref id; | |
4041 | struct gdb_ext_thread_info threadinfo; | |
9d1f7ab2 | 4042 | |
5d93a237 | 4043 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 4044 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4045 | _("remote_threads_extra_info")); |
9d1f7ab2 | 4046 | |
d7e15655 | 4047 | if (tp->ptid == magic_null_ptid |
e38504b3 | 4048 | || (tp->ptid.pid () != 0 && tp->ptid.lwp () == 0)) |
60e569b9 PA |
4049 | /* This is the main thread which was added by GDB. The remote |
4050 | server doesn't know about it. */ | |
4051 | return NULL; | |
4052 | ||
c76a8ea3 PA |
4053 | std::string &extra = get_remote_thread_info (tp)->extra; |
4054 | ||
4055 | /* If already have cached info, use it. */ | |
4056 | if (!extra.empty ()) | |
4057 | return extra.c_str (); | |
4058 | ||
4082afcc | 4059 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 4060 | { |
c76a8ea3 PA |
4061 | /* If we're using qXfer:threads:read, then the extra info is |
4062 | included in the XML. So if we didn't have anything cached, | |
4063 | it's because there's really no extra info. */ | |
4064 | return NULL; | |
dc146f7c VP |
4065 | } |
4066 | ||
b80fafe3 | 4067 | if (rs->use_threadextra_query) |
9d1f7ab2 | 4068 | { |
8d64371b TT |
4069 | char *b = rs->buf.data (); |
4070 | char *endb = b + get_remote_packet_size (); | |
82f73884 PA |
4071 | |
4072 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
4073 | b += strlen (b); | |
4074 | write_ptid (b, endb, tp->ptid); | |
4075 | ||
2e9f7625 | 4076 | putpkt (rs->buf); |
8d64371b | 4077 | getpkt (&rs->buf, 0); |
2e9f7625 | 4078 | if (rs->buf[0] != 0) |
9d1f7ab2 | 4079 | { |
8d64371b TT |
4080 | extra.resize (strlen (rs->buf.data ()) / 2); |
4081 | hex2bin (rs->buf.data (), (gdb_byte *) &extra[0], extra.size ()); | |
c76a8ea3 | 4082 | return extra.c_str (); |
9d1f7ab2 | 4083 | } |
0f71a2f6 | 4084 | } |
9d1f7ab2 MS |
4085 | |
4086 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 4087 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
4088 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
4089 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
e38504b3 | 4090 | int_to_threadref (&id, tp->ptid.lwp ()); |
9d1f7ab2 MS |
4091 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
4092 | if (threadinfo.active) | |
0f71a2f6 | 4093 | { |
9d1f7ab2 | 4094 | if (*threadinfo.shortname) |
c76a8ea3 | 4095 | string_appendf (extra, " Name: %s", threadinfo.shortname); |
9d1f7ab2 | 4096 | if (*threadinfo.display) |
c76a8ea3 PA |
4097 | { |
4098 | if (!extra.empty ()) | |
4099 | extra += ','; | |
4100 | string_appendf (extra, " State: %s", threadinfo.display); | |
4101 | } | |
9d1f7ab2 | 4102 | if (*threadinfo.more_display) |
c5aa993b | 4103 | { |
c76a8ea3 PA |
4104 | if (!extra.empty ()) |
4105 | extra += ','; | |
4106 | string_appendf (extra, " Priority: %s", threadinfo.more_display); | |
c5aa993b | 4107 | } |
c76a8ea3 | 4108 | return extra.c_str (); |
0f71a2f6 | 4109 | } |
9d1f7ab2 | 4110 | return NULL; |
0f71a2f6 | 4111 | } |
c906108c | 4112 | \f |
c5aa993b | 4113 | |
f6ac5f3d PA |
4114 | bool |
4115 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
4116 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
4117 | { |
4118 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 4119 | char *p = rs->buf.data (); |
0fb4aa4b | 4120 | |
bba74b36 | 4121 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
4122 | p += strlen (p); |
4123 | p += hexnumstr (p, addr); | |
4124 | putpkt (rs->buf); | |
8d64371b TT |
4125 | getpkt (&rs->buf, 0); |
4126 | p = rs->buf.data (); | |
0fb4aa4b PA |
4127 | |
4128 | if (*p == 'E') | |
4129 | error (_("Remote failure reply: %s"), p); | |
4130 | ||
4131 | if (*p++ == 'm') | |
4132 | { | |
256642e8 | 4133 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 4134 | return true; |
0fb4aa4b PA |
4135 | } |
4136 | ||
5d9310c4 | 4137 | return false; |
0fb4aa4b PA |
4138 | } |
4139 | ||
f6ac5f3d PA |
4140 | std::vector<static_tracepoint_marker> |
4141 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
4142 | { |
4143 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 4144 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 4145 | const char *p; |
5d9310c4 | 4146 | static_tracepoint_marker marker; |
0fb4aa4b PA |
4147 | |
4148 | /* Ask for a first packet of static tracepoint marker | |
4149 | definition. */ | |
4150 | putpkt ("qTfSTM"); | |
8d64371b TT |
4151 | getpkt (&rs->buf, 0); |
4152 | p = rs->buf.data (); | |
0fb4aa4b PA |
4153 | if (*p == 'E') |
4154 | error (_("Remote failure reply: %s"), p); | |
4155 | ||
0fb4aa4b PA |
4156 | while (*p++ == 'm') |
4157 | { | |
0fb4aa4b PA |
4158 | do |
4159 | { | |
5d9310c4 | 4160 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 4161 | |
5d9310c4 SM |
4162 | if (strid == NULL || marker.str_id == strid) |
4163 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
4164 | } |
4165 | while (*p++ == ','); /* comma-separated list */ | |
4166 | /* Ask for another packet of static tracepoint definition. */ | |
4167 | putpkt ("qTsSTM"); | |
8d64371b TT |
4168 | getpkt (&rs->buf, 0); |
4169 | p = rs->buf.data (); | |
0fb4aa4b PA |
4170 | } |
4171 | ||
0fb4aa4b PA |
4172 | return markers; |
4173 | } | |
4174 | ||
4175 | \f | |
10760264 JB |
4176 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
4177 | ||
f6ac5f3d | 4178 | ptid_t |
c80e29db | 4179 | remote_target::get_ada_task_ptid (long lwp, ULONGEST thread) |
10760264 | 4180 | { |
184ea2f7 | 4181 | return ptid_t (inferior_ptid.pid (), lwp); |
10760264 JB |
4182 | } |
4183 | \f | |
4184 | ||
24b06219 | 4185 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 4186 | |
6b8edb51 PA |
4187 | void |
4188 | remote_target::extended_remote_restart () | |
c906108c | 4189 | { |
d01949b6 | 4190 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4191 | |
4192 | /* Send the restart command; for reasons I don't understand the | |
4193 | remote side really expects a number after the "R". */ | |
8d64371b | 4194 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "R%x", 0); |
6d820c5c | 4195 | putpkt (rs->buf); |
c906108c | 4196 | |
ad9a8f3f | 4197 | remote_fileio_reset (); |
c906108c SS |
4198 | } |
4199 | \f | |
4200 | /* Clean up connection to a remote debugger. */ | |
4201 | ||
f6ac5f3d PA |
4202 | void |
4203 | remote_target::close () | |
c906108c | 4204 | { |
048094ac | 4205 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4206 | terminal_ours (); |
ce5ce7ed | 4207 | |
6b8edb51 PA |
4208 | trace_reset_local_state (); |
4209 | ||
4210 | delete this; | |
4211 | } | |
4212 | ||
4213 | remote_target::~remote_target () | |
4214 | { | |
4215 | struct remote_state *rs = get_remote_state (); | |
4216 | ||
4217 | /* Check for NULL because we may get here with a partially | |
4218 | constructed target/connection. */ | |
4219 | if (rs->remote_desc == nullptr) | |
4220 | return; | |
4221 | ||
4222 | serial_close (rs->remote_desc); | |
4223 | ||
4224 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4225 | everything of this target. */ |
6b8edb51 | 4226 | discard_pending_stop_replies_in_queue (); |
74531fed | 4227 | |
6b8edb51 PA |
4228 | if (rs->remote_async_inferior_event_token) |
4229 | delete_async_event_handler (&rs->remote_async_inferior_event_token); | |
722247f1 | 4230 | |
97dfbadd | 4231 | delete rs->notif_state; |
c906108c SS |
4232 | } |
4233 | ||
23860348 | 4234 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4235 | |
6b8edb51 PA |
4236 | void |
4237 | remote_target::get_offsets () | |
c906108c | 4238 | { |
d01949b6 | 4239 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4240 | char *buf; |
085dd6e6 | 4241 | char *ptr; |
31d99776 DJ |
4242 | int lose, num_segments = 0, do_sections, do_segments; |
4243 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
31d99776 | 4244 | |
a42d7dd8 | 4245 | if (current_program_space->symfile_object_file == NULL) |
31d99776 | 4246 | return; |
c906108c SS |
4247 | |
4248 | putpkt ("qOffsets"); | |
8d64371b TT |
4249 | getpkt (&rs->buf, 0); |
4250 | buf = rs->buf.data (); | |
c906108c SS |
4251 | |
4252 | if (buf[0] == '\000') | |
4253 | return; /* Return silently. Stub doesn't support | |
23860348 | 4254 | this command. */ |
c906108c SS |
4255 | if (buf[0] == 'E') |
4256 | { | |
8a3fe4f8 | 4257 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4258 | return; |
4259 | } | |
4260 | ||
4261 | /* Pick up each field in turn. This used to be done with scanf, but | |
4262 | scanf will make trouble if CORE_ADDR size doesn't match | |
4263 | conversion directives correctly. The following code will work | |
4264 | with any size of CORE_ADDR. */ | |
4265 | text_addr = data_addr = bss_addr = 0; | |
4266 | ptr = buf; | |
4267 | lose = 0; | |
4268 | ||
61012eef | 4269 | if (startswith (ptr, "Text=")) |
c906108c SS |
4270 | { |
4271 | ptr += 5; | |
4272 | /* Don't use strtol, could lose on big values. */ | |
4273 | while (*ptr && *ptr != ';') | |
4274 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4275 | |
61012eef | 4276 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4277 | { |
4278 | ptr += 6; | |
4279 | while (*ptr && *ptr != ';') | |
4280 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4281 | } | |
4282 | else | |
4283 | lose = 1; | |
4284 | ||
61012eef | 4285 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4286 | { |
4287 | ptr += 5; | |
4288 | while (*ptr && *ptr != ';') | |
4289 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4290 | |
31d99776 DJ |
4291 | if (bss_addr != data_addr) |
4292 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4293 | } | |
4294 | else | |
4295 | lose = 1; | |
4296 | } | |
61012eef | 4297 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4298 | { |
31d99776 DJ |
4299 | ptr += 8; |
4300 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4301 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4302 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4303 | num_segments = 1; | |
4304 | ||
61012eef | 4305 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4306 | { |
4307 | ptr += 9; | |
4308 | while (*ptr && *ptr != ';') | |
4309 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4310 | num_segments++; | |
4311 | } | |
c906108c SS |
4312 | } |
4313 | else | |
4314 | lose = 1; | |
4315 | ||
4316 | if (lose) | |
8a3fe4f8 | 4317 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4318 | else if (*ptr != '\0') |
4319 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4320 | |
a42d7dd8 TT |
4321 | objfile *objf = current_program_space->symfile_object_file; |
4322 | section_offsets offs = objf->section_offsets; | |
c906108c | 4323 | |
98badbfd | 4324 | symfile_segment_data_up data = get_symfile_segment_data (objf->obfd.get ()); |
31d99776 DJ |
4325 | do_segments = (data != NULL); |
4326 | do_sections = num_segments == 0; | |
c906108c | 4327 | |
28c32713 | 4328 | if (num_segments > 0) |
31d99776 | 4329 | { |
31d99776 DJ |
4330 | segments[0] = text_addr; |
4331 | segments[1] = data_addr; | |
4332 | } | |
28c32713 JB |
4333 | /* If we have two segments, we can still try to relocate everything |
4334 | by assuming that the .text and .data offsets apply to the whole | |
4335 | text and data segments. Convert the offsets given in the packet | |
4336 | to base addresses for symfile_map_offsets_to_segments. */ | |
68b888ff | 4337 | else if (data != nullptr && data->segments.size () == 2) |
28c32713 | 4338 | { |
68b888ff SM |
4339 | segments[0] = data->segments[0].base + text_addr; |
4340 | segments[1] = data->segments[1].base + data_addr; | |
28c32713 JB |
4341 | num_segments = 2; |
4342 | } | |
8d385431 DJ |
4343 | /* If the object file has only one segment, assume that it is text |
4344 | rather than data; main programs with no writable data are rare, | |
4345 | but programs with no code are useless. Of course the code might | |
4346 | have ended up in the data segment... to detect that we would need | |
4347 | the permissions here. */ | |
68b888ff | 4348 | else if (data && data->segments.size () == 1) |
8d385431 | 4349 | { |
68b888ff | 4350 | segments[0] = data->segments[0].base + text_addr; |
8d385431 DJ |
4351 | num_segments = 1; |
4352 | } | |
28c32713 JB |
4353 | /* There's no way to relocate by segment. */ |
4354 | else | |
4355 | do_segments = 0; | |
31d99776 DJ |
4356 | |
4357 | if (do_segments) | |
4358 | { | |
98badbfd | 4359 | int ret = symfile_map_offsets_to_segments (objf->obfd.get (), |
62982abd SM |
4360 | data.get (), offs, |
4361 | num_segments, segments); | |
31d99776 DJ |
4362 | |
4363 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4364 | error (_("Can not handle qOffsets TextSeg " |
4365 | "response with this symbol file")); | |
31d99776 DJ |
4366 | |
4367 | if (ret > 0) | |
4368 | do_sections = 0; | |
4369 | } | |
c906108c | 4370 | |
31d99776 DJ |
4371 | if (do_sections) |
4372 | { | |
a42d7dd8 | 4373 | offs[SECT_OFF_TEXT (objf)] = text_addr; |
31d99776 | 4374 | |
3e43a32a MS |
4375 | /* This is a temporary kludge to force data and bss to use the |
4376 | same offsets because that's what nlmconv does now. The real | |
4377 | solution requires changes to the stub and remote.c that I | |
4378 | don't have time to do right now. */ | |
31d99776 | 4379 | |
a42d7dd8 TT |
4380 | offs[SECT_OFF_DATA (objf)] = data_addr; |
4381 | offs[SECT_OFF_BSS (objf)] = data_addr; | |
31d99776 | 4382 | } |
c906108c | 4383 | |
a42d7dd8 | 4384 | objfile_relocate (objf, offs); |
c906108c SS |
4385 | } |
4386 | ||
9a7071a8 | 4387 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4388 | |
4389 | void | |
4390 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4391 | { |
5d93a237 TT |
4392 | struct remote_state *rs = get_remote_state (); |
4393 | ||
9a7071a8 | 4394 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4395 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4396 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4397 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4398 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4399 | { | |
5d93a237 | 4400 | serial_send_break (rs->remote_desc); |
c33e31fd | 4401 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4402 | } |
4403 | else | |
4404 | internal_error (__FILE__, __LINE__, | |
4405 | _("Invalid value for interrupt_sequence_mode: %s."), | |
4406 | interrupt_sequence_mode); | |
4407 | } | |
4408 | ||
3405876a PA |
4409 | |
4410 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4411 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4412 | ||
4413 | static ptid_t | |
e3b2741b | 4414 | stop_reply_extract_thread (const char *stop_reply) |
3405876a PA |
4415 | { |
4416 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4417 | { | |
256642e8 | 4418 | const char *p; |
3405876a PA |
4419 | |
4420 | /* Txx r:val ; r:val (...) */ | |
4421 | p = &stop_reply[3]; | |
4422 | ||
4423 | /* Look for "register" named "thread". */ | |
4424 | while (*p != '\0') | |
4425 | { | |
256642e8 | 4426 | const char *p1; |
3405876a PA |
4427 | |
4428 | p1 = strchr (p, ':'); | |
4429 | if (p1 == NULL) | |
4430 | return null_ptid; | |
4431 | ||
4432 | if (strncmp (p, "thread", p1 - p) == 0) | |
4433 | return read_ptid (++p1, &p); | |
4434 | ||
4435 | p1 = strchr (p, ';'); | |
4436 | if (p1 == NULL) | |
4437 | return null_ptid; | |
4438 | p1++; | |
4439 | ||
4440 | p = p1; | |
4441 | } | |
4442 | } | |
4443 | ||
4444 | return null_ptid; | |
4445 | } | |
4446 | ||
b7ea362b PA |
4447 | /* Determine the remote side's current thread. If we have a stop |
4448 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4449 | "thread" register we can extract the current thread from. If not, | |
4450 | ask the remote which is the current thread with qC. The former | |
4451 | method avoids a roundtrip. */ | |
4452 | ||
6b8edb51 | 4453 | ptid_t |
e3b2741b | 4454 | remote_target::get_current_thread (const char *wait_status) |
b7ea362b | 4455 | { |
6a49a997 | 4456 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4457 | |
4458 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4459 | the target architecture, which we haven't yet fully determined at | |
4460 | this point. */ | |
4461 | if (wait_status != NULL) | |
4462 | ptid = stop_reply_extract_thread (wait_status); | |
d7e15655 | 4463 | if (ptid == null_ptid) |
b7ea362b PA |
4464 | ptid = remote_current_thread (inferior_ptid); |
4465 | ||
4466 | return ptid; | |
4467 | } | |
4468 | ||
49c62f2e PA |
4469 | /* Query the remote target for which is the current thread/process, |
4470 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4471 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4472 | to return the current thread. |
4473 | ||
4474 | This function is called after handling the '?' or 'vRun' packets, | |
4475 | whose response is a stop reply from which we can also try | |
4476 | extracting the thread. If the target doesn't support the explicit | |
4477 | qC query, we infer the current thread from that stop reply, passed | |
64d38fdd | 4478 | in in WAIT_STATUS, which may be NULL. |
49c62f2e | 4479 | |
64d38fdd JM |
4480 | The function returns pointer to the main thread of the inferior. */ |
4481 | ||
4482 | thread_info * | |
e3b2741b | 4483 | remote_target::add_current_inferior_and_thread (const char *wait_status) |
49c62f2e PA |
4484 | { |
4485 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 4486 | bool fake_pid_p = false; |
49c62f2e | 4487 | |
0ac55310 | 4488 | switch_to_no_thread (); |
49c62f2e | 4489 | |
0ac55310 PA |
4490 | /* Now, if we have thread information, update the current thread's |
4491 | ptid. */ | |
87215ad1 | 4492 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4493 | |
87215ad1 | 4494 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4495 | { |
4496 | if (!remote_multi_process_p (rs)) | |
9ab8741a | 4497 | fake_pid_p = true; |
49c62f2e PA |
4498 | } |
4499 | else | |
4500 | { | |
4501 | /* Without this, some commands which require an active target | |
4502 | (such as kill) won't work. This variable serves (at least) | |
4503 | double duty as both the pid of the target process (if it has | |
4504 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4505 | curr_ptid = magic_null_ptid; |
9ab8741a | 4506 | fake_pid_p = true; |
49c62f2e PA |
4507 | } |
4508 | ||
e99b03dc | 4509 | remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1); |
49c62f2e | 4510 | |
87215ad1 SDJ |
4511 | /* Add the main thread and switch to it. Don't try reading |
4512 | registers yet, since we haven't fetched the target description | |
4513 | yet. */ | |
5b6d1e4f | 4514 | thread_info *tp = add_thread_silent (this, curr_ptid); |
87215ad1 | 4515 | switch_to_thread_no_regs (tp); |
64d38fdd JM |
4516 | |
4517 | return tp; | |
49c62f2e PA |
4518 | } |
4519 | ||
6efcd9a8 PA |
4520 | /* Print info about a thread that was found already stopped on |
4521 | connection. */ | |
4522 | ||
1edb66d8 SM |
4523 | void |
4524 | remote_target::print_one_stopped_thread (thread_info *thread) | |
6efcd9a8 | 4525 | { |
1edb66d8 SM |
4526 | target_waitstatus ws; |
4527 | ||
4528 | /* If there is a pending waitstatus, use it. If there isn't it's because | |
4529 | the thread's stop was reported with TARGET_WAITKIND_STOPPED / GDB_SIGNAL_0 | |
4530 | and process_initial_stop_replies decided it wasn't interesting to save | |
4531 | and report to the core. */ | |
4532 | if (thread->has_pending_waitstatus ()) | |
4533 | { | |
4534 | ws = thread->pending_waitstatus (); | |
4535 | thread->clear_pending_waitstatus (); | |
4536 | } | |
4537 | else | |
4538 | { | |
183be222 | 4539 | ws.set_stopped (GDB_SIGNAL_0); |
1edb66d8 | 4540 | } |
6efcd9a8 | 4541 | |
00431a78 | 4542 | switch_to_thread (thread); |
1edb66d8 | 4543 | thread->set_stop_pc (get_frame_pc (get_current_frame ())); |
6efcd9a8 PA |
4544 | set_current_sal_from_frame (get_current_frame ()); |
4545 | ||
1edb66d8 SM |
4546 | /* For "info program". */ |
4547 | set_last_target_status (this, thread->ptid, ws); | |
6efcd9a8 | 4548 | |
183be222 | 4549 | if (ws.kind () == TARGET_WAITKIND_STOPPED) |
6efcd9a8 | 4550 | { |
183be222 | 4551 | enum gdb_signal sig = ws.sig (); |
6efcd9a8 PA |
4552 | |
4553 | if (signal_print_state (sig)) | |
76727919 | 4554 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4555 | } |
76727919 | 4556 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4557 | } |
4558 | ||
221e1a37 PA |
4559 | /* Process all initial stop replies the remote side sent in response |
4560 | to the ? packet. These indicate threads that were already stopped | |
4561 | on initial connection. We mark these threads as stopped and print | |
4562 | their current frame before giving the user the prompt. */ | |
4563 | ||
6b8edb51 PA |
4564 | void |
4565 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4566 | { |
4567 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4568 | struct thread_info *selected = NULL; |
4569 | struct thread_info *lowest_stopped = NULL; | |
4570 | struct thread_info *first = NULL; | |
221e1a37 | 4571 | |
1edb66d8 SM |
4572 | /* This is only used when the target is non-stop. */ |
4573 | gdb_assert (target_is_non_stop_p ()); | |
4574 | ||
221e1a37 PA |
4575 | /* Consume the initial pending events. */ |
4576 | while (pending_stop_replies-- > 0) | |
4577 | { | |
4578 | ptid_t waiton_ptid = minus_one_ptid; | |
4579 | ptid_t event_ptid; | |
4580 | struct target_waitstatus ws; | |
4581 | int ignore_event = 0; | |
4582 | ||
221e1a37 PA |
4583 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); |
4584 | if (remote_debug) | |
c272a98c | 4585 | print_target_wait_results (waiton_ptid, event_ptid, ws); |
221e1a37 | 4586 | |
183be222 | 4587 | switch (ws.kind ()) |
221e1a37 PA |
4588 | { |
4589 | case TARGET_WAITKIND_IGNORE: | |
4590 | case TARGET_WAITKIND_NO_RESUMED: | |
4591 | case TARGET_WAITKIND_SIGNALLED: | |
4592 | case TARGET_WAITKIND_EXITED: | |
4593 | /* We shouldn't see these, but if we do, just ignore. */ | |
2189c312 | 4594 | remote_debug_printf ("event ignored"); |
221e1a37 PA |
4595 | ignore_event = 1; |
4596 | break; | |
4597 | ||
221e1a37 PA |
4598 | default: |
4599 | break; | |
4600 | } | |
4601 | ||
4602 | if (ignore_event) | |
4603 | continue; | |
4604 | ||
5b6d1e4f | 4605 | thread_info *evthread = find_thread_ptid (this, event_ptid); |
221e1a37 | 4606 | |
183be222 | 4607 | if (ws.kind () == TARGET_WAITKIND_STOPPED) |
221e1a37 | 4608 | { |
183be222 | 4609 | enum gdb_signal sig = ws.sig (); |
221e1a37 PA |
4610 | |
4611 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4612 | instead of signal 0. Suppress it. */ | |
4613 | if (sig == GDB_SIGNAL_TRAP) | |
4614 | sig = GDB_SIGNAL_0; | |
1edb66d8 | 4615 | evthread->set_stop_signal (sig); |
183be222 | 4616 | ws.set_stopped (sig); |
6efcd9a8 | 4617 | } |
221e1a37 | 4618 | |
183be222 SM |
4619 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
4620 | || ws.sig () != GDB_SIGNAL_0) | |
1edb66d8 | 4621 | evthread->set_pending_waitstatus (ws); |
6efcd9a8 | 4622 | |
719546c4 SM |
4623 | set_executing (this, event_ptid, false); |
4624 | set_running (this, event_ptid, false); | |
c9d22089 | 4625 | get_remote_thread_info (evthread)->set_not_resumed (); |
6efcd9a8 PA |
4626 | } |
4627 | ||
4628 | /* "Notice" the new inferiors before anything related to | |
4629 | registers/memory. */ | |
5b6d1e4f | 4630 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4631 | { |
6efcd9a8 PA |
4632 | inf->needs_setup = 1; |
4633 | ||
4634 | if (non_stop) | |
4635 | { | |
08036331 | 4636 | thread_info *thread = any_live_thread_of_inferior (inf); |
00431a78 | 4637 | notice_new_inferior (thread, thread->state == THREAD_RUNNING, |
6efcd9a8 PA |
4638 | from_tty); |
4639 | } | |
4640 | } | |
4641 | ||
4642 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4643 | records the threads' stop pc, so must be done after "noticing" | |
4644 | the inferiors. */ | |
4645 | if (!non_stop) | |
4646 | { | |
abe8cab7 SM |
4647 | { |
4648 | /* At this point, the remote target is not async. It needs to be for | |
4649 | the poll in stop_all_threads to consider events from it, so enable | |
4650 | it temporarily. */ | |
4651 | gdb_assert (!this->is_async_p ()); | |
4a570176 TT |
4652 | SCOPE_EXIT { target_async (false); }; |
4653 | target_async (true); | |
4f5539f0 | 4654 | stop_all_threads ("remote connect in all-stop"); |
abe8cab7 | 4655 | } |
6efcd9a8 PA |
4656 | |
4657 | /* If all threads of an inferior were already stopped, we | |
4658 | haven't setup the inferior yet. */ | |
5b6d1e4f | 4659 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4660 | { |
6efcd9a8 PA |
4661 | if (inf->needs_setup) |
4662 | { | |
08036331 | 4663 | thread_info *thread = any_live_thread_of_inferior (inf); |
6efcd9a8 PA |
4664 | switch_to_thread_no_regs (thread); |
4665 | setup_inferior (0); | |
4666 | } | |
4667 | } | |
221e1a37 | 4668 | } |
6efcd9a8 PA |
4669 | |
4670 | /* Now go over all threads that are stopped, and print their current | |
4671 | frame. If all-stop, then if there's a signalled thread, pick | |
4672 | that as current. */ | |
5b6d1e4f | 4673 | for (thread_info *thread : all_non_exited_threads (this)) |
6efcd9a8 | 4674 | { |
6efcd9a8 PA |
4675 | if (first == NULL) |
4676 | first = thread; | |
4677 | ||
4678 | if (!non_stop) | |
00431a78 | 4679 | thread->set_running (false); |
6efcd9a8 PA |
4680 | else if (thread->state != THREAD_STOPPED) |
4681 | continue; | |
4682 | ||
1edb66d8 | 4683 | if (selected == nullptr && thread->has_pending_waitstatus ()) |
6efcd9a8 PA |
4684 | selected = thread; |
4685 | ||
5d5658a1 PA |
4686 | if (lowest_stopped == NULL |
4687 | || thread->inf->num < lowest_stopped->inf->num | |
4688 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4689 | lowest_stopped = thread; |
4690 | ||
4691 | if (non_stop) | |
4692 | print_one_stopped_thread (thread); | |
4693 | } | |
4694 | ||
4695 | /* In all-stop, we only print the status of one thread, and leave | |
4696 | others with their status pending. */ | |
4697 | if (!non_stop) | |
4698 | { | |
08036331 | 4699 | thread_info *thread = selected; |
6efcd9a8 PA |
4700 | if (thread == NULL) |
4701 | thread = lowest_stopped; | |
4702 | if (thread == NULL) | |
4703 | thread = first; | |
4704 | ||
4705 | print_one_stopped_thread (thread); | |
4706 | } | |
221e1a37 PA |
4707 | } |
4708 | ||
7a34f66b AB |
4709 | /* Mark a remote_target as marking (by setting the starting_up flag within |
4710 | its remote_state) for the lifetime of this object. The reference count | |
4711 | on the remote target is temporarily incremented, to prevent the target | |
4712 | being deleted under our feet. */ | |
4713 | ||
4714 | struct scoped_mark_target_starting | |
4715 | { | |
4716 | /* Constructor, TARGET is the target to be marked as starting, its | |
4717 | reference count will be incremented. */ | |
4718 | scoped_mark_target_starting (remote_target *target) | |
4719 | : m_remote_target (target) | |
4720 | { | |
4721 | m_remote_target->incref (); | |
4722 | remote_state *rs = m_remote_target->get_remote_state (); | |
4723 | rs->starting_up = true; | |
4724 | } | |
4725 | ||
4726 | /* Destructor, mark the target being worked on as no longer starting, and | |
4727 | decrement the reference count. */ | |
4728 | ~scoped_mark_target_starting () | |
4729 | { | |
4730 | remote_state *rs = m_remote_target->get_remote_state (); | |
4731 | rs->starting_up = false; | |
4732 | decref_target (m_remote_target); | |
4733 | } | |
4734 | ||
4735 | private: | |
4736 | ||
4737 | /* The target on which we are operating. */ | |
4738 | remote_target *m_remote_target; | |
4739 | }; | |
4740 | ||
288712bb AB |
4741 | /* Helper for remote_target::start_remote, start the remote connection and |
4742 | sync state. Return true if everything goes OK, otherwise, return false. | |
4743 | This function exists so that the scoped_restore created within it will | |
4744 | expire before we return to remote_target::start_remote. */ | |
048094ac | 4745 | |
288712bb AB |
4746 | bool |
4747 | remote_target::start_remote_1 (int from_tty, int extended_p) | |
c906108c | 4748 | { |
2189c312 SM |
4749 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
4750 | ||
c8d104ad PA |
4751 | struct remote_state *rs = get_remote_state (); |
4752 | struct packet_config *noack_config; | |
8621d6a9 | 4753 | |
048094ac PA |
4754 | /* Signal other parts that we're going through the initial setup, |
4755 | and so things may not be stable yet. E.g., we don't try to | |
4756 | install tracepoints until we've relocated symbols. Also, a | |
4757 | Ctrl-C before we're connected and synced up can't interrupt the | |
4758 | target. Instead, it offers to drop the (potentially wedged) | |
4759 | connection. */ | |
7a34f66b | 4760 | scoped_mark_target_starting target_is_starting (this); |
048094ac | 4761 | |
522002f9 | 4762 | QUIT; |
c906108c | 4763 | |
9a7071a8 JB |
4764 | if (interrupt_on_connect) |
4765 | send_interrupt_sequence (); | |
4766 | ||
57e12211 | 4767 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4768 | remote_serial_write ("+", 1); |
1e51243a | 4769 | |
c8d104ad PA |
4770 | /* The first packet we send to the target is the optional "supported |
4771 | packets" request. If the target can answer this, it will tell us | |
4772 | which later probes to skip. */ | |
4773 | remote_query_supported (); | |
4774 | ||
d914c394 | 4775 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4776 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4777 | set_permissions (); |
d914c394 | 4778 | |
57809e5e JK |
4779 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4780 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4781 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4782 | invalid reply and GDB would return error in | |
4783 | remote_hostio_set_filesystem, making remote files access impossible. | |
4784 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4785 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4786 | { | |
4787 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4788 | ||
4789 | putpkt (v_mustreplyempty); | |
8d64371b TT |
4790 | getpkt (&rs->buf, 0); |
4791 | if (strcmp (rs->buf.data (), "OK") == 0) | |
57809e5e | 4792 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; |
8d64371b | 4793 | else if (strcmp (rs->buf.data (), "") != 0) |
57809e5e | 4794 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, |
8d64371b | 4795 | rs->buf.data ()); |
57809e5e JK |
4796 | } |
4797 | ||
c8d104ad PA |
4798 | /* Next, we possibly activate noack mode. |
4799 | ||
4800 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4801 | enable noack mode if the stub reported a wish for it with | |
4802 | qSupported. | |
4803 | ||
4804 | If set to TRUE, then enable noack mode even if the stub didn't | |
4805 | report it in qSupported. If the stub doesn't reply OK, the | |
4806 | session ends with an error. | |
4807 | ||
4808 | If FALSE, then don't activate noack mode, regardless of what the | |
4809 | stub claimed should be the default with qSupported. */ | |
4810 | ||
4811 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4812 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4813 | { |
4814 | putpkt ("QStartNoAckMode"); | |
8d64371b | 4815 | getpkt (&rs->buf, 0); |
c8d104ad PA |
4816 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) |
4817 | rs->noack_mode = 1; | |
4818 | } | |
4819 | ||
04bd08de | 4820 | if (extended_p) |
5fe04517 PA |
4821 | { |
4822 | /* Tell the remote that we are using the extended protocol. */ | |
4823 | putpkt ("!"); | |
8d64371b | 4824 | getpkt (&rs->buf, 0); |
5fe04517 PA |
4825 | } |
4826 | ||
9b224c5e PA |
4827 | /* Let the target know which signals it is allowed to pass down to |
4828 | the program. */ | |
4829 | update_signals_program_target (); | |
4830 | ||
d962ef82 DJ |
4831 | /* Next, if the target can specify a description, read it. We do |
4832 | this before anything involving memory or registers. */ | |
4833 | target_find_description (); | |
4834 | ||
6c95b8df PA |
4835 | /* Next, now that we know something about the target, update the |
4836 | address spaces in the program spaces. */ | |
4837 | update_address_spaces (); | |
4838 | ||
50c71eaf PA |
4839 | /* On OSs where the list of libraries is global to all |
4840 | processes, we fetch them early. */ | |
f5656ead | 4841 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4842 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4843 | |
6efcd9a8 | 4844 | if (target_is_non_stop_p ()) |
74531fed | 4845 | { |
4082afcc | 4846 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4847 | error (_("Non-stop mode requested, but remote " |
4848 | "does not support non-stop")); | |
74531fed PA |
4849 | |
4850 | putpkt ("QNonStop:1"); | |
8d64371b | 4851 | getpkt (&rs->buf, 0); |
74531fed | 4852 | |
8d64371b TT |
4853 | if (strcmp (rs->buf.data (), "OK") != 0) |
4854 | error (_("Remote refused setting non-stop mode with: %s"), | |
4855 | rs->buf.data ()); | |
74531fed PA |
4856 | |
4857 | /* Find about threads and processes the stub is already | |
4858 | controlling. We default to adding them in the running state. | |
4859 | The '?' query below will then tell us about which threads are | |
4860 | stopped. */ | |
f6ac5f3d | 4861 | this->update_thread_list (); |
74531fed | 4862 | } |
4082afcc | 4863 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4864 | { |
4865 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4866 | Request it explicitly. */ |
74531fed | 4867 | putpkt ("QNonStop:0"); |
8d64371b | 4868 | getpkt (&rs->buf, 0); |
74531fed | 4869 | |
8d64371b TT |
4870 | if (strcmp (rs->buf.data (), "OK") != 0) |
4871 | error (_("Remote refused setting all-stop mode with: %s"), | |
4872 | rs->buf.data ()); | |
74531fed PA |
4873 | } |
4874 | ||
a0743c90 YQ |
4875 | /* Upload TSVs regardless of whether the target is running or not. The |
4876 | remote stub, such as GDBserver, may have some predefined or builtin | |
4877 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4878 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4879 | { |
4880 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4881 | ||
f6ac5f3d | 4882 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4883 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4884 | } | |
4885 | ||
2d717e4f DJ |
4886 | /* Check whether the target is running now. */ |
4887 | putpkt ("?"); | |
8d64371b | 4888 | getpkt (&rs->buf, 0); |
2d717e4f | 4889 | |
6efcd9a8 | 4890 | if (!target_is_non_stop_p ()) |
2d717e4f | 4891 | { |
b5c8f22d SM |
4892 | char *wait_status = NULL; |
4893 | ||
74531fed | 4894 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4895 | { |
04bd08de | 4896 | if (!extended_p) |
74531fed | 4897 | error (_("The target is not running (try extended-remote?)")); |
288712bb | 4898 | return false; |
2d717e4f DJ |
4899 | } |
4900 | else | |
74531fed | 4901 | { |
74531fed | 4902 | /* Save the reply for later. */ |
8d64371b TT |
4903 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
4904 | strcpy (wait_status, rs->buf.data ()); | |
74531fed PA |
4905 | } |
4906 | ||
b7ea362b | 4907 | /* Fetch thread list. */ |
e8032dde | 4908 | target_update_thread_list (); |
b7ea362b | 4909 | |
74531fed PA |
4910 | /* Let the stub know that we want it to return the thread. */ |
4911 | set_continue_thread (minus_one_ptid); | |
4912 | ||
5b6d1e4f | 4913 | if (thread_count (this) == 0) |
b7ea362b PA |
4914 | { |
4915 | /* Target has no concept of threads at all. GDB treats | |
4916 | non-threaded target as single-threaded; add a main | |
4917 | thread. */ | |
64d38fdd JM |
4918 | thread_info *tp = add_current_inferior_and_thread (wait_status); |
4919 | get_remote_thread_info (tp)->set_resumed (); | |
b7ea362b PA |
4920 | } |
4921 | else | |
4922 | { | |
4923 | /* We have thread information; select the thread the target | |
4924 | says should be current. If we're reconnecting to a | |
4925 | multi-threaded program, this will ideally be the thread | |
4926 | that last reported an event before GDB disconnected. */ | |
75c6c844 PA |
4927 | ptid_t curr_thread = get_current_thread (wait_status); |
4928 | if (curr_thread == null_ptid) | |
b7ea362b PA |
4929 | { |
4930 | /* Odd... The target was able to list threads, but not | |
4931 | tell us which thread was current (no "thread" | |
4932 | register in T stop reply?). Just pick the first | |
4933 | thread in the thread list then. */ | |
2189c312 SM |
4934 | |
4935 | remote_debug_printf ("warning: couldn't determine remote " | |
4936 | "current thread; picking first in list."); | |
c9f35b34 | 4937 | |
5b6d1e4f PA |
4938 | for (thread_info *tp : all_non_exited_threads (this, |
4939 | minus_one_ptid)) | |
75c6c844 PA |
4940 | { |
4941 | switch_to_thread (tp); | |
4942 | break; | |
4943 | } | |
b7ea362b | 4944 | } |
75c6c844 | 4945 | else |
5b6d1e4f | 4946 | switch_to_thread (find_thread_ptid (this, curr_thread)); |
b7ea362b | 4947 | } |
74531fed | 4948 | |
6e586cc5 YQ |
4949 | /* init_wait_for_inferior should be called before get_offsets in order |
4950 | to manage `inserted' flag in bp loc in a correct state. | |
4951 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4952 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4953 | start_remote, set `inserted' flag to 1. In the initialization of | |
4954 | inferior, breakpoint_init_inferior should be called first, and then | |
4955 | breakpoint_re_set can be called. If this order is broken, state of | |
4956 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4957 | manipulation. */ | |
4958 | init_wait_for_inferior (); | |
4959 | ||
74531fed PA |
4960 | get_offsets (); /* Get text, data & bss offsets. */ |
4961 | ||
d962ef82 DJ |
4962 | /* If we could not find a description using qXfer, and we know |
4963 | how to do it some other way, try again. This is not | |
4964 | supported for non-stop; it could be, but it is tricky if | |
4965 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4966 | if (remote_read_description_p (this) |
f5656ead | 4967 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4968 | { |
4969 | target_clear_description (); | |
4970 | target_find_description (); | |
4971 | } | |
4972 | ||
74531fed PA |
4973 | /* Use the previously fetched status. */ |
4974 | gdb_assert (wait_status != NULL); | |
4f626cad AB |
4975 | struct notif_event *reply |
4976 | = remote_notif_parse (this, ¬if_client_stop, wait_status); | |
4977 | push_stop_reply ((struct stop_reply *) reply); | |
74531fed | 4978 | |
f6ac5f3d | 4979 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4980 | } |
4981 | else | |
4982 | { | |
68c97600 PA |
4983 | /* Clear WFI global state. Do this before finding about new |
4984 | threads and inferiors, and setting the current inferior. | |
4985 | Otherwise we would clear the proceed status of the current | |
4986 | inferior when we want its stop_soon state to be preserved | |
4987 | (see notice_new_inferior). */ | |
4988 | init_wait_for_inferior (); | |
4989 | ||
74531fed PA |
4990 | /* In non-stop, we will either get an "OK", meaning that there |
4991 | are no stopped threads at this time; or, a regular stop | |
4992 | reply. In the latter case, there may be more than one thread | |
4993 | stopped --- we pull them all out using the vStopped | |
4994 | mechanism. */ | |
8d64371b | 4995 | if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 4996 | { |
722247f1 | 4997 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4998 | |
722247f1 YQ |
4999 | /* remote_notif_get_pending_replies acks this one, and gets |
5000 | the rest out. */ | |
f48ff2a7 | 5001 | rs->notif_state->pending_event[notif_client_stop.id] |
8d64371b | 5002 | = remote_notif_parse (this, notif, rs->buf.data ()); |
722247f1 | 5003 | remote_notif_get_pending_events (notif); |
74531fed | 5004 | } |
2d717e4f | 5005 | |
5b6d1e4f | 5006 | if (thread_count (this) == 0) |
74531fed | 5007 | { |
04bd08de | 5008 | if (!extended_p) |
74531fed | 5009 | error (_("The target is not running (try extended-remote?)")); |
288712bb | 5010 | return false; |
c35b1492 | 5011 | } |
74531fed | 5012 | |
2455069d | 5013 | /* Report all signals during attach/startup. */ |
adc6a863 | 5014 | pass_signals ({}); |
221e1a37 PA |
5015 | |
5016 | /* If there are already stopped threads, mark them stopped and | |
5017 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 5018 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
5019 | |
5020 | if (target_can_async_p ()) | |
4a570176 | 5021 | target_async (true); |
74531fed | 5022 | } |
c8d104ad | 5023 | |
901e4e8d SM |
5024 | /* Give the target a chance to look up symbols. */ |
5025 | for (inferior *inf : all_inferiors (this)) | |
c8d104ad | 5026 | { |
901e4e8d SM |
5027 | /* The inferiors that exist at this point were created from what |
5028 | was found already running on the remote side, so we know they | |
5029 | have execution. */ | |
5030 | gdb_assert (this->has_execution (inf)); | |
5031 | ||
a42d7dd8 | 5032 | /* No use without a symbol-file. */ |
901e4e8d SM |
5033 | if (inf->pspace->symfile_object_file == nullptr) |
5034 | continue; | |
5035 | ||
5036 | /* Need to switch to a specific thread, because remote_check_symbols | |
5037 | uses INFERIOR_PTID to set the general thread. */ | |
5038 | scoped_restore_current_thread restore_thread; | |
5039 | thread_info *thread = any_thread_of_inferior (inf); | |
5040 | switch_to_thread (thread); | |
5041 | this->remote_check_symbols (); | |
c8d104ad | 5042 | } |
50c71eaf | 5043 | |
d5551862 SS |
5044 | /* Possibly the target has been engaged in a trace run started |
5045 | previously; find out where things are at. */ | |
f6ac5f3d | 5046 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 5047 | { |
00bf0b85 | 5048 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 5049 | |
00bf0b85 | 5050 | if (current_trace_status ()->running) |
6cb06a8c | 5051 | gdb_printf (_("Trace is already running on the target.\n")); |
00bf0b85 | 5052 | |
f6ac5f3d | 5053 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
5054 | |
5055 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
5056 | } |
5057 | ||
c0272db5 TW |
5058 | /* Possibly the target has been engaged in a btrace record started |
5059 | previously; find out where things are at. */ | |
5060 | remote_btrace_maybe_reopen (); | |
5061 | ||
288712bb AB |
5062 | return true; |
5063 | } | |
5064 | ||
5065 | /* Start the remote connection and sync state. */ | |
1e51243a | 5066 | |
288712bb AB |
5067 | void |
5068 | remote_target::start_remote (int from_tty, int extended_p) | |
5069 | { | |
5070 | if (start_remote_1 (from_tty, extended_p) | |
5071 | && breakpoints_should_be_inserted_now ()) | |
50c71eaf | 5072 | insert_breakpoints (); |
c906108c SS |
5073 | } |
5074 | ||
121b3efd PA |
5075 | const char * |
5076 | remote_target::connection_string () | |
5077 | { | |
5078 | remote_state *rs = get_remote_state (); | |
5079 | ||
5080 | if (rs->remote_desc->name != NULL) | |
5081 | return rs->remote_desc->name; | |
5082 | else | |
5083 | return NULL; | |
5084 | } | |
5085 | ||
c906108c SS |
5086 | /* Open a connection to a remote debugger. |
5087 | NAME is the filename used for communication. */ | |
5088 | ||
f6ac5f3d PA |
5089 | void |
5090 | remote_target::open (const char *name, int from_tty) | |
c906108c | 5091 | { |
f6ac5f3d | 5092 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
5093 | } |
5094 | ||
c906108c SS |
5095 | /* Open a connection to a remote debugger using the extended |
5096 | remote gdb protocol. NAME is the filename used for communication. */ | |
5097 | ||
f6ac5f3d PA |
5098 | void |
5099 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 5100 | { |
f6ac5f3d | 5101 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
5102 | } |
5103 | ||
ca4f7f8b PA |
5104 | /* Reset all packets back to "unknown support". Called when opening a |
5105 | new connection to a remote target. */ | |
c906108c | 5106 | |
d471ea57 | 5107 | static void |
ca4f7f8b | 5108 | reset_all_packet_configs_support (void) |
d471ea57 AC |
5109 | { |
5110 | int i; | |
a744cf53 | 5111 | |
444abaca | 5112 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 5113 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
5114 | } |
5115 | ||
ca4f7f8b PA |
5116 | /* Initialize all packet configs. */ |
5117 | ||
5118 | static void | |
5119 | init_all_packet_configs (void) | |
5120 | { | |
5121 | int i; | |
5122 | ||
5123 | for (i = 0; i < PACKET_MAX; i++) | |
5124 | { | |
5125 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
5126 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
5127 | } | |
5128 | } | |
5129 | ||
23860348 | 5130 | /* Symbol look-up. */ |
dc8acb97 | 5131 | |
6b8edb51 PA |
5132 | void |
5133 | remote_target::remote_check_symbols () | |
dc8acb97 | 5134 | { |
8d64371b | 5135 | char *tmp; |
dc8acb97 MS |
5136 | int end; |
5137 | ||
06c7226e SM |
5138 | /* It doesn't make sense to send a qSymbol packet for an inferior that |
5139 | doesn't have execution, because the remote side doesn't know about | |
5140 | inferiors without execution. */ | |
5141 | gdb_assert (target_has_execution ()); | |
63154eca | 5142 | |
4082afcc | 5143 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
5144 | return; |
5145 | ||
63154eca PA |
5146 | /* Make sure the remote is pointing at the right process. Note |
5147 | there's no way to select "no process". */ | |
3c9c4b83 PA |
5148 | set_general_process (); |
5149 | ||
6d820c5c DJ |
5150 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
5151 | because we need both at the same time. */ | |
66644cd3 | 5152 | gdb::char_vector msg (get_remote_packet_size ()); |
8d64371b | 5153 | gdb::char_vector reply (get_remote_packet_size ()); |
6d820c5c | 5154 | |
23860348 | 5155 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
5156 | |
5157 | putpkt ("qSymbol::"); | |
8d64371b | 5158 | getpkt (&reply, 0); |
28170b88 | 5159 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); |
dc8acb97 | 5160 | |
8d64371b | 5161 | while (startswith (reply.data (), "qSymbol:")) |
dc8acb97 | 5162 | { |
77e371c0 TT |
5163 | struct bound_minimal_symbol sym; |
5164 | ||
dc8acb97 | 5165 | tmp = &reply[8]; |
66644cd3 AB |
5166 | end = hex2bin (tmp, reinterpret_cast <gdb_byte *> (msg.data ()), |
5167 | strlen (tmp) / 2); | |
dc8acb97 | 5168 | msg[end] = '\0'; |
66644cd3 | 5169 | sym = lookup_minimal_symbol (msg.data (), NULL, NULL); |
3b7344d5 | 5170 | if (sym.minsym == NULL) |
66644cd3 AB |
5171 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol::%s", |
5172 | &reply[8]); | |
dc8acb97 | 5173 | else |
2bbe3cc1 | 5174 | { |
f5656ead | 5175 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
4aeddc50 | 5176 | CORE_ADDR sym_addr = sym.value_address (); |
2bbe3cc1 DJ |
5177 | |
5178 | /* If this is a function address, return the start of code | |
5179 | instead of any data function descriptor. */ | |
328d42d8 SM |
5180 | sym_addr = gdbarch_convert_from_func_ptr_addr |
5181 | (target_gdbarch (), sym_addr, current_inferior ()->top_target ()); | |
2bbe3cc1 | 5182 | |
66644cd3 | 5183 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol:%s:%s", |
5af949e3 | 5184 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 | 5185 | } |
66644cd3 AB |
5186 | |
5187 | putpkt (msg.data ()); | |
8d64371b | 5188 | getpkt (&reply, 0); |
dc8acb97 MS |
5189 | } |
5190 | } | |
5191 | ||
9db8d71f | 5192 | static struct serial * |
baa336ce | 5193 | remote_serial_open (const char *name) |
9db8d71f DJ |
5194 | { |
5195 | static int udp_warning = 0; | |
5196 | ||
5197 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
5198 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
5199 | serial connection is reliable and not the serial connection promising | |
5200 | to be. */ | |
61012eef | 5201 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 5202 | { |
3e43a32a MS |
5203 | warning (_("The remote protocol may be unreliable over UDP.\n" |
5204 | "Some events may be lost, rendering further debugging " | |
5205 | "impossible.")); | |
9db8d71f DJ |
5206 | udp_warning = 1; |
5207 | } | |
5208 | ||
5209 | return serial_open (name); | |
5210 | } | |
5211 | ||
d914c394 SS |
5212 | /* Inform the target of our permission settings. The permission flags |
5213 | work without this, but if the target knows the settings, it can do | |
5214 | a couple things. First, it can add its own check, to catch cases | |
5215 | that somehow manage to get by the permissions checks in target | |
5216 | methods. Second, if the target is wired to disallow particular | |
5217 | settings (for instance, a system in the field that is not set up to | |
5218 | be able to stop at a breakpoint), it can object to any unavailable | |
5219 | permissions. */ | |
5220 | ||
5221 | void | |
f6ac5f3d | 5222 | remote_target::set_permissions () |
d914c394 SS |
5223 | { |
5224 | struct remote_state *rs = get_remote_state (); | |
5225 | ||
8d64371b | 5226 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAllow:" |
bba74b36 YQ |
5227 | "WriteReg:%x;WriteMem:%x;" |
5228 | "InsertBreak:%x;InsertTrace:%x;" | |
5229 | "InsertFastTrace:%x;Stop:%x", | |
5230 | may_write_registers, may_write_memory, | |
5231 | may_insert_breakpoints, may_insert_tracepoints, | |
5232 | may_insert_fast_tracepoints, may_stop); | |
d914c394 | 5233 | putpkt (rs->buf); |
8d64371b | 5234 | getpkt (&rs->buf, 0); |
d914c394 SS |
5235 | |
5236 | /* If the target didn't like the packet, warn the user. Do not try | |
5237 | to undo the user's settings, that would just be maddening. */ | |
8d64371b TT |
5238 | if (strcmp (rs->buf.data (), "OK") != 0) |
5239 | warning (_("Remote refused setting permissions with: %s"), | |
5240 | rs->buf.data ()); | |
d914c394 SS |
5241 | } |
5242 | ||
be2a5f71 DJ |
5243 | /* This type describes each known response to the qSupported |
5244 | packet. */ | |
5245 | struct protocol_feature | |
5246 | { | |
5247 | /* The name of this protocol feature. */ | |
5248 | const char *name; | |
5249 | ||
5250 | /* The default for this protocol feature. */ | |
5251 | enum packet_support default_support; | |
5252 | ||
5253 | /* The function to call when this feature is reported, or after | |
5254 | qSupported processing if the feature is not supported. | |
5255 | The first argument points to this structure. The second | |
5256 | argument indicates whether the packet requested support be | |
5257 | enabled, disabled, or probed (or the default, if this function | |
5258 | is being called at the end of processing and this feature was | |
5259 | not reported). The third argument may be NULL; if not NULL, it | |
5260 | is a NUL-terminated string taken from the packet following | |
5261 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5262 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5263 | enum packet_support, const char *); | |
be2a5f71 DJ |
5264 | |
5265 | /* The corresponding packet for this feature. Only used if | |
5266 | FUNC is remote_supported_packet. */ | |
5267 | int packet; | |
5268 | }; | |
5269 | ||
be2a5f71 | 5270 | static void |
6b8edb51 PA |
5271 | remote_supported_packet (remote_target *remote, |
5272 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5273 | enum packet_support support, |
5274 | const char *argument) | |
5275 | { | |
5276 | if (argument) | |
5277 | { | |
5278 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5279 | " \"%s\"."), feature->name); | |
5280 | return; | |
5281 | } | |
5282 | ||
4082afcc | 5283 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5284 | } |
be2a5f71 | 5285 | |
6b8edb51 PA |
5286 | void |
5287 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5288 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5289 | { |
5290 | struct remote_state *rs = get_remote_state (); | |
5291 | ||
5292 | int packet_size; | |
5293 | char *value_end; | |
5294 | ||
5295 | if (support != PACKET_ENABLE) | |
5296 | return; | |
5297 | ||
5298 | if (value == NULL || *value == '\0') | |
5299 | { | |
5300 | warning (_("Remote target reported \"%s\" without a size."), | |
5301 | feature->name); | |
5302 | return; | |
5303 | } | |
5304 | ||
5305 | errno = 0; | |
5306 | packet_size = strtol (value, &value_end, 16); | |
5307 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5308 | { | |
5309 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5310 | feature->name, value); | |
5311 | return; | |
5312 | } | |
5313 | ||
be2a5f71 DJ |
5314 | /* Record the new maximum packet size. */ |
5315 | rs->explicit_packet_size = packet_size; | |
5316 | } | |
5317 | ||
cb8c24b6 | 5318 | static void |
6b8edb51 PA |
5319 | remote_packet_size (remote_target *remote, const protocol_feature *feature, |
5320 | enum packet_support support, const char *value) | |
5321 | { | |
5322 | remote->remote_packet_size (feature, support, value); | |
5323 | } | |
5324 | ||
dc473cfb | 5325 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5326 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5327 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5328 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5329 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5330 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5331 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5332 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5333 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5334 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5335 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5336 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5337 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5338 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5339 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5340 | PACKET_qXfer_memory_map }, |
07e059b5 VP |
5341 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5342 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5343 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5344 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5345 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5346 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5347 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5348 | PACKET_QPassSignals }, | |
82075af2 JS |
5349 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5350 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5351 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5352 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5353 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5354 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5355 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5356 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5357 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5358 | PACKET_QEnvironmentHexEncoded }, | |
5359 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5360 | PACKET_QEnvironmentReset }, | |
5361 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5362 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5363 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5364 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5365 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5366 | PACKET_multiprocess_feature }, | |
5367 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5368 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5369 | PACKET_qXfer_siginfo_read }, | |
5370 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5371 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5372 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5373 | PACKET_ConditionalTracepoints }, |
4082afcc | 5374 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5375 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5376 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5377 | PACKET_BreakpointCommands }, |
4082afcc | 5378 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5379 | PACKET_FastTracepoints }, |
4082afcc | 5380 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5381 | PACKET_StaticTracepoints }, |
4082afcc | 5382 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5383 | PACKET_InstallInTrace}, |
4082afcc PA |
5384 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5385 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5386 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5387 | PACKET_bc }, | |
5388 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5389 | PACKET_bs }, | |
409873ef SS |
5390 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5391 | PACKET_TracepointSource }, | |
d914c394 SS |
5392 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5393 | PACKET_QAllow }, | |
4082afcc PA |
5394 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5395 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5396 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5397 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5398 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5399 | PACKET_qXfer_uib }, | |
03583c20 UW |
5400 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5401 | PACKET_QDisableRandomization }, | |
d1feda86 | 5402 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5403 | { "QTBuffer:size", PACKET_DISABLE, |
5404 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5405 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5406 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5407 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5408 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5409 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5410 | PACKET_qXfer_btrace }, |
5411 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5412 | PACKET_qXfer_btrace_conf }, |
5413 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5414 | PACKET_Qbtrace_conf_bts_size }, |
5415 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5416 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5417 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5418 | PACKET_fork_event_feature }, | |
5419 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5420 | PACKET_vfork_event_feature }, | |
94585166 DB |
5421 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5422 | PACKET_exec_event_feature }, | |
b20a6524 | 5423 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5424 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5425 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5426 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5427 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
2c2e7f87 LM |
5428 | { "memory-tagging", PACKET_DISABLE, remote_supported_packet, |
5429 | PACKET_memory_tagging_feature }, | |
be2a5f71 DJ |
5430 | }; |
5431 | ||
c8d5aac9 L |
5432 | static char *remote_support_xml; |
5433 | ||
5434 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5435 | ||
5436 | void | |
6e39997a | 5437 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5438 | { |
5439 | #if defined(HAVE_LIBEXPAT) | |
5440 | if (remote_support_xml == NULL) | |
c4f7c687 | 5441 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5442 | else |
5443 | { | |
5444 | char *copy = xstrdup (remote_support_xml + 13); | |
ca3a04f6 CB |
5445 | char *saveptr; |
5446 | char *p = strtok_r (copy, ",", &saveptr); | |
c8d5aac9 L |
5447 | |
5448 | do | |
5449 | { | |
5450 | if (strcmp (p, xml) == 0) | |
5451 | { | |
5452 | /* already there */ | |
5453 | xfree (copy); | |
5454 | return; | |
5455 | } | |
5456 | } | |
ca3a04f6 | 5457 | while ((p = strtok_r (NULL, ",", &saveptr)) != NULL); |
c8d5aac9 L |
5458 | xfree (copy); |
5459 | ||
94b0dee1 PA |
5460 | remote_support_xml = reconcat (remote_support_xml, |
5461 | remote_support_xml, ",", xml, | |
5462 | (char *) NULL); | |
c8d5aac9 L |
5463 | } |
5464 | #endif | |
5465 | } | |
5466 | ||
69b6ecb0 TT |
5467 | static void |
5468 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5469 | { |
69b6ecb0 TT |
5470 | if (!msg->empty ()) |
5471 | msg->append (";"); | |
5472 | msg->append (append); | |
c8d5aac9 L |
5473 | } |
5474 | ||
6b8edb51 PA |
5475 | void |
5476 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5477 | { |
5478 | struct remote_state *rs = get_remote_state (); | |
5479 | char *next; | |
5480 | int i; | |
5481 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5482 | ||
5483 | /* The packet support flags are handled differently for this packet | |
5484 | than for most others. We treat an error, a disabled packet, and | |
5485 | an empty response identically: any features which must be reported | |
5486 | to be used will be automatically disabled. An empty buffer | |
5487 | accomplishes this, since that is also the representation for a list | |
5488 | containing no features. */ | |
5489 | ||
5490 | rs->buf[0] = 0; | |
4082afcc | 5491 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5492 | { |
69b6ecb0 | 5493 | std::string q; |
c8d5aac9 | 5494 | |
73b8c1fd | 5495 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5496 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5497 | |
f7e6eed5 | 5498 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5499 | remote_query_supported_append (&q, "swbreak+"); |
f7e6eed5 | 5500 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5501 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5502 | |
69b6ecb0 | 5503 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5504 | |
8020350c DB |
5505 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
5506 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5507 | remote_query_supported_append (&q, "fork-events+"); |
8020350c DB |
5508 | if (packet_set_cmd_state (PACKET_vfork_event_feature) |
5509 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5510 | remote_query_supported_append (&q, "vfork-events+"); |
8020350c DB |
5511 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
5512 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5513 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5514 | |
750ce8d1 | 5515 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5516 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5517 | |
65706a29 | 5518 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5519 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5520 | |
f2faf941 | 5521 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5522 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5523 | |
2c2e7f87 LM |
5524 | if (packet_set_cmd_state (PACKET_memory_tagging_feature) |
5525 | != AUTO_BOOLEAN_FALSE) | |
5526 | remote_query_supported_append (&q, "memory-tagging+"); | |
5527 | ||
b35d5edb PA |
5528 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5529 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5530 | if (remote_support_xml != NULL |
5531 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
69b6ecb0 | 5532 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5533 | |
69b6ecb0 TT |
5534 | q = "qSupported:" + q; |
5535 | putpkt (q.c_str ()); | |
94b0dee1 | 5536 | |
8d64371b | 5537 | getpkt (&rs->buf, 0); |
be2a5f71 DJ |
5538 | |
5539 | /* If an error occured, warn, but do not return - just reset the | |
5540 | buffer to empty and go on to disable features. */ | |
5541 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5542 | == PACKET_ERROR) | |
5543 | { | |
8d64371b | 5544 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
be2a5f71 DJ |
5545 | rs->buf[0] = 0; |
5546 | } | |
5547 | } | |
5548 | ||
5549 | memset (seen, 0, sizeof (seen)); | |
5550 | ||
8d64371b | 5551 | next = rs->buf.data (); |
be2a5f71 DJ |
5552 | while (*next) |
5553 | { | |
5554 | enum packet_support is_supported; | |
5555 | char *p, *end, *name_end, *value; | |
5556 | ||
5557 | /* First separate out this item from the rest of the packet. If | |
5558 | there's another item after this, we overwrite the separator | |
5559 | (terminated strings are much easier to work with). */ | |
5560 | p = next; | |
5561 | end = strchr (p, ';'); | |
5562 | if (end == NULL) | |
5563 | { | |
5564 | end = p + strlen (p); | |
5565 | next = end; | |
5566 | } | |
5567 | else | |
5568 | { | |
89be2091 DJ |
5569 | *end = '\0'; |
5570 | next = end + 1; | |
5571 | ||
be2a5f71 DJ |
5572 | if (end == p) |
5573 | { | |
5574 | warning (_("empty item in \"qSupported\" response")); | |
5575 | continue; | |
5576 | } | |
be2a5f71 DJ |
5577 | } |
5578 | ||
5579 | name_end = strchr (p, '='); | |
5580 | if (name_end) | |
5581 | { | |
5582 | /* This is a name=value entry. */ | |
5583 | is_supported = PACKET_ENABLE; | |
5584 | value = name_end + 1; | |
5585 | *name_end = '\0'; | |
5586 | } | |
5587 | else | |
5588 | { | |
5589 | value = NULL; | |
5590 | switch (end[-1]) | |
5591 | { | |
5592 | case '+': | |
5593 | is_supported = PACKET_ENABLE; | |
5594 | break; | |
5595 | ||
5596 | case '-': | |
5597 | is_supported = PACKET_DISABLE; | |
5598 | break; | |
5599 | ||
5600 | case '?': | |
5601 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5602 | break; | |
5603 | ||
5604 | default: | |
3e43a32a MS |
5605 | warning (_("unrecognized item \"%s\" " |
5606 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5607 | continue; |
5608 | } | |
5609 | end[-1] = '\0'; | |
5610 | } | |
5611 | ||
5612 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5613 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5614 | { | |
5615 | const struct protocol_feature *feature; | |
5616 | ||
5617 | seen[i] = 1; | |
5618 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5619 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5620 | break; |
5621 | } | |
5622 | } | |
5623 | ||
5624 | /* If we increased the packet size, make sure to increase the global | |
5625 | buffer size also. We delay this until after parsing the entire | |
5626 | qSupported packet, because this is the same buffer we were | |
5627 | parsing. */ | |
8d64371b TT |
5628 | if (rs->buf.size () < rs->explicit_packet_size) |
5629 | rs->buf.resize (rs->explicit_packet_size); | |
be2a5f71 DJ |
5630 | |
5631 | /* Handle the defaults for unmentioned features. */ | |
5632 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5633 | if (!seen[i]) | |
5634 | { | |
5635 | const struct protocol_feature *feature; | |
5636 | ||
5637 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5638 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5639 | } |
5640 | } | |
5641 | ||
048094ac PA |
5642 | /* Serial QUIT handler for the remote serial descriptor. |
5643 | ||
5644 | Defers handling a Ctrl-C until we're done with the current | |
5645 | command/response packet sequence, unless: | |
5646 | ||
5647 | - We're setting up the connection. Don't send a remote interrupt | |
5648 | request, as we're not fully synced yet. Quit immediately | |
5649 | instead. | |
5650 | ||
5651 | - The target has been resumed in the foreground | |
223ffa71 | 5652 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5653 | packet, and we're blocked waiting for the stop reply, thus a |
5654 | Ctrl-C should be immediately sent to the target. | |
5655 | ||
5656 | - We get a second Ctrl-C while still within the same serial read or | |
5657 | write. In that case the serial is seemingly wedged --- offer to | |
5658 | quit/disconnect. | |
5659 | ||
5660 | - We see a second Ctrl-C without target response, after having | |
5661 | previously interrupted the target. In that case the target/stub | |
5662 | is probably wedged --- offer to quit/disconnect. | |
5663 | */ | |
5664 | ||
6b8edb51 PA |
5665 | void |
5666 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5667 | { |
5668 | struct remote_state *rs = get_remote_state (); | |
5669 | ||
5670 | if (check_quit_flag ()) | |
5671 | { | |
5672 | /* If we're starting up, we're not fully synced yet. Quit | |
5673 | immediately. */ | |
5674 | if (rs->starting_up) | |
5675 | quit (); | |
5676 | else if (rs->got_ctrlc_during_io) | |
5677 | { | |
5678 | if (query (_("The target is not responding to GDB commands.\n" | |
5679 | "Stop debugging it? "))) | |
5b6d1e4f | 5680 | remote_unpush_and_throw (this); |
048094ac PA |
5681 | } |
5682 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5683 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5684 | interrupt_query (); |
5685 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5686 | an interrupt request. */ | |
223ffa71 | 5687 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5688 | target_interrupt (); |
048094ac PA |
5689 | else |
5690 | rs->got_ctrlc_during_io = 1; | |
5691 | } | |
5692 | } | |
5693 | ||
6b8edb51 PA |
5694 | /* The remote_target that is current while the quit handler is |
5695 | overridden with remote_serial_quit_handler. */ | |
5696 | static remote_target *curr_quit_handler_target; | |
5697 | ||
5698 | static void | |
5699 | remote_serial_quit_handler () | |
5700 | { | |
5701 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5702 | } | |
5703 | ||
5b6d1e4f PA |
5704 | /* Remove the remote target from the target stack of each inferior |
5705 | that is using it. Upper targets depend on it so remove them | |
5706 | first. */ | |
78a095c3 JK |
5707 | |
5708 | static void | |
5b6d1e4f | 5709 | remote_unpush_target (remote_target *target) |
78a095c3 | 5710 | { |
5b6d1e4f PA |
5711 | /* We have to unpush the target from all inferiors, even those that |
5712 | aren't running. */ | |
5713 | scoped_restore_current_inferior restore_current_inferior; | |
5714 | ||
5715 | for (inferior *inf : all_inferiors (target)) | |
5716 | { | |
5717 | switch_to_inferior_no_thread (inf); | |
5718 | pop_all_targets_at_and_above (process_stratum); | |
5719 | generic_mourn_inferior (); | |
5720 | } | |
d7cb0ef3 PA |
5721 | |
5722 | /* Don't rely on target_close doing this when the target is popped | |
5723 | from the last remote inferior above, because something may be | |
5724 | holding a reference to the target higher up on the stack, meaning | |
5725 | target_close won't be called yet. We lost the connection to the | |
5726 | target, so clear these now, otherwise we may later throw | |
5727 | TARGET_CLOSE_ERROR while trying to tell the remote target to | |
5728 | close the file. */ | |
5729 | fileio_handles_invalidate_target (target); | |
78a095c3 | 5730 | } |
be2a5f71 | 5731 | |
048094ac | 5732 | static void |
5b6d1e4f | 5733 | remote_unpush_and_throw (remote_target *target) |
048094ac | 5734 | { |
5b6d1e4f | 5735 | remote_unpush_target (target); |
048094ac PA |
5736 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
5737 | } | |
5738 | ||
f6ac5f3d PA |
5739 | void |
5740 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5741 | { |
6b8edb51 | 5742 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5743 | |
c906108c | 5744 | if (name == 0) |
8a3fe4f8 | 5745 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5746 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5747 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5748 | |
2d717e4f | 5749 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5750 | Ask this question first, before target_preopen has a chance to kill |
5751 | anything. */ | |
55f6301a | 5752 | if (curr_remote != NULL && !target_has_execution ()) |
2d717e4f | 5753 | { |
78a095c3 JK |
5754 | if (from_tty |
5755 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5756 | error (_("Still connected.")); |
5757 | } | |
5758 | ||
78a095c3 | 5759 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5760 | target_preopen (from_tty); |
5761 | ||
ad9a8f3f | 5762 | remote_fileio_reset (); |
1dd41f16 | 5763 | reopen_exec_file (); |
9dec38d3 | 5764 | reread_symbols (from_tty); |
1dd41f16 | 5765 | |
6b8edb51 PA |
5766 | remote_target *remote |
5767 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5768 | target_ops_up target_holder (remote); | |
5769 | ||
5770 | remote_state *rs = remote->get_remote_state (); | |
5771 | ||
5772 | /* See FIXME above. */ | |
5773 | if (!target_async_permitted) | |
5774 | rs->wait_forever_enabled_p = 1; | |
5775 | ||
5d93a237 TT |
5776 | rs->remote_desc = remote_serial_open (name); |
5777 | if (!rs->remote_desc) | |
c906108c SS |
5778 | perror_with_name (name); |
5779 | ||
5780 | if (baud_rate != -1) | |
5781 | { | |
5d93a237 | 5782 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5783 | { |
9b74d5d3 KB |
5784 | /* The requested speed could not be set. Error out to |
5785 | top level after closing remote_desc. Take care to | |
5786 | set remote_desc to NULL to avoid closing remote_desc | |
5787 | more than once. */ | |
5d93a237 TT |
5788 | serial_close (rs->remote_desc); |
5789 | rs->remote_desc = NULL; | |
c906108c SS |
5790 | perror_with_name (name); |
5791 | } | |
5792 | } | |
5793 | ||
236af5e3 | 5794 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5795 | serial_raw (rs->remote_desc); |
c906108c SS |
5796 | |
5797 | /* If there is something sitting in the buffer we might take it as a | |
5798 | response to a command, which would be bad. */ | |
5d93a237 | 5799 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5800 | |
5801 | if (from_tty) | |
5802 | { | |
0426ad51 TT |
5803 | gdb_puts ("Remote debugging using "); |
5804 | gdb_puts (name); | |
5805 | gdb_puts ("\n"); | |
c906108c | 5806 | } |
d9f719f1 | 5807 | |
6b8edb51 | 5808 | /* Switch to using the remote target now. */ |
02980c56 | 5809 | current_inferior ()->push_target (std::move (target_holder)); |
c906108c | 5810 | |
74531fed | 5811 | /* Register extra event sources in the event loop. */ |
6b8edb51 | 5812 | rs->remote_async_inferior_event_token |
baa8575b | 5813 | = create_async_event_handler (remote_async_inferior_event_handler, nullptr, |
db20ebdf | 5814 | "remote"); |
6b8edb51 | 5815 | rs->notif_state = remote_notif_state_allocate (remote); |
74531fed | 5816 | |
be2a5f71 DJ |
5817 | /* Reset the target state; these things will be queried either by |
5818 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5819 | reset_all_packet_configs_support (); |
be2a5f71 | 5820 | rs->explicit_packet_size = 0; |
a6f3e723 | 5821 | rs->noack_mode = 0; |
82f73884 | 5822 | rs->extended = extended_p; |
e24a49d8 | 5823 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5824 | rs->ctrlc_pending_p = 0; |
048094ac | 5825 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5826 | |
47f8a51d TT |
5827 | rs->general_thread = not_sent_ptid; |
5828 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5829 | rs->remote_traceframe_number = -1; |
c906108c | 5830 | |
3a00c802 PA |
5831 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5832 | ||
9d1f7ab2 | 5833 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5834 | rs->use_threadinfo_query = 1; |
5835 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5836 | |
dd194f6b | 5837 | rs->readahead_cache.invalidate (); |
80152258 | 5838 | |
c6ebd6cf | 5839 | if (target_async_permitted) |
92d1e331 | 5840 | { |
92d1e331 DJ |
5841 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5842 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5843 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5844 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5845 | around this. Eventually a mechanism that allows |
92d1e331 | 5846 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5847 | implemented. */ |
6b8edb51 | 5848 | rs->wait_forever_enabled_p = 0; |
92d1e331 DJ |
5849 | } |
5850 | ||
23860348 | 5851 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5852 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5853 | |
36918e70 | 5854 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5855 | target (we'd otherwise be in an inconsistent state) and then |
5856 | propogate the error on up the exception chain. This ensures that | |
5857 | the caller doesn't stumble along blindly assuming that the | |
5858 | function succeeded. The CLI doesn't have this problem but other | |
5859 | UI's, such as MI do. | |
36918e70 AC |
5860 | |
5861 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5862 | this function should return an error indication letting the | |
ce2826aa | 5863 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5864 | ``target remote'' is directly wired to this function making that |
5865 | impossible. On a positive note, the CLI side of this problem has | |
5866 | been fixed - the function set_cmd_context() makes it possible for | |
5867 | all the ``target ....'' commands to share a common callback | |
5868 | function. See cli-dump.c. */ | |
109c3e39 | 5869 | { |
2d717e4f | 5870 | |
a70b8144 | 5871 | try |
04bd08de | 5872 | { |
6b8edb51 | 5873 | remote->start_remote (from_tty, extended_p); |
04bd08de | 5874 | } |
230d2906 | 5875 | catch (const gdb_exception &ex) |
109c3e39 | 5876 | { |
c8d104ad PA |
5877 | /* Pop the partially set up target - unless something else did |
5878 | already before throwing the exception. */ | |
6b8edb51 | 5879 | if (ex.error != TARGET_CLOSE_ERROR) |
5b6d1e4f | 5880 | remote_unpush_target (remote); |
eedc3f4f | 5881 | throw; |
109c3e39 AC |
5882 | } |
5883 | } | |
c906108c | 5884 | |
6b8edb51 | 5885 | remote_btrace_reset (rs); |
f4abbc16 | 5886 | |
c6ebd6cf | 5887 | if (target_async_permitted) |
6b8edb51 | 5888 | rs->wait_forever_enabled_p = 1; |
43ff13b4 JM |
5889 | } |
5890 | ||
28561a65 | 5891 | /* Determine if WS represents a fork status. */ |
a4543480 | 5892 | |
28561a65 SM |
5893 | static bool |
5894 | is_fork_status (target_waitkind kind) | |
a4543480 | 5895 | { |
28561a65 SM |
5896 | return (kind == TARGET_WAITKIND_FORKED |
5897 | || kind == TARGET_WAITKIND_VFORKED); | |
a4543480 SM |
5898 | } |
5899 | ||
28561a65 SM |
5900 | /* Return THREAD's pending status if it is a pending fork parent, else |
5901 | return nullptr. */ | |
a4543480 | 5902 | |
28561a65 | 5903 | static const target_waitstatus * |
a4543480 SM |
5904 | thread_pending_fork_status (struct thread_info *thread) |
5905 | { | |
28561a65 SM |
5906 | const target_waitstatus &ws |
5907 | = (thread->has_pending_waitstatus () | |
5908 | ? thread->pending_waitstatus () | |
5909 | : thread->pending_follow); | |
a4543480 | 5910 | |
28561a65 SM |
5911 | if (!is_fork_status (ws.kind ())) |
5912 | return nullptr; | |
a4543480 | 5913 | |
28561a65 | 5914 | return &ws; |
a4543480 SM |
5915 | } |
5916 | ||
de0d863e DB |
5917 | /* Detach the specified process. */ |
5918 | ||
6b8edb51 PA |
5919 | void |
5920 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
5921 | { |
5922 | struct remote_state *rs = get_remote_state (); | |
5923 | ||
4c7333b3 PA |
5924 | /* This should not be necessary, but the handling for D;PID in |
5925 | GDBserver versions prior to 8.2 incorrectly assumes that the | |
5926 | selected process points to the same process we're detaching, | |
5927 | leading to misbehavior (and possibly GDBserver crashing) when it | |
5928 | does not. Since it's easy and cheap, work around it by forcing | |
5929 | GDBserver to select GDB's current process. */ | |
5930 | set_general_process (); | |
5931 | ||
de0d863e | 5932 | if (remote_multi_process_p (rs)) |
8d64371b | 5933 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "D;%x", pid); |
de0d863e | 5934 | else |
8d64371b | 5935 | strcpy (rs->buf.data (), "D"); |
de0d863e DB |
5936 | |
5937 | putpkt (rs->buf); | |
8d64371b | 5938 | getpkt (&rs->buf, 0); |
de0d863e DB |
5939 | |
5940 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5941 | ; | |
5942 | else if (rs->buf[0] == '\0') | |
5943 | error (_("Remote doesn't know how to detach")); | |
5944 | else | |
5945 | error (_("Can't detach process.")); | |
5946 | } | |
5947 | ||
5948 | /* This detaches a program to which we previously attached, using | |
5949 | inferior_ptid to identify the process. After this is done, GDB | |
5950 | can be used to debug some other program. We better not have left | |
5951 | any breakpoints in the target program or it'll die when it hits | |
5952 | one. */ | |
c906108c | 5953 | |
6b8edb51 | 5954 | void |
00431a78 | 5955 | remote_target::remote_detach_1 (inferior *inf, int from_tty) |
c906108c | 5956 | { |
e99b03dc | 5957 | int pid = inferior_ptid.pid (); |
d01949b6 | 5958 | struct remote_state *rs = get_remote_state (); |
de0d863e | 5959 | int is_fork_parent; |
c906108c | 5960 | |
55f6301a | 5961 | if (!target_has_execution ()) |
2d717e4f DJ |
5962 | error (_("No process to detach from.")); |
5963 | ||
0f48b757 | 5964 | target_announce_detach (from_tty); |
7cee1e54 | 5965 | |
e87f0fe8 PA |
5966 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) |
5967 | { | |
5968 | /* If we're in breakpoints-always-inserted mode, or the inferior | |
5969 | is running, we have to remove breakpoints before detaching. | |
5970 | We don't do this in common code instead because not all | |
5971 | targets support removing breakpoints while the target is | |
5972 | running. The remote target / gdbserver does, though. */ | |
5973 | remove_breakpoints_inf (current_inferior ()); | |
5974 | } | |
5975 | ||
c906108c | 5976 | /* Tell the remote target to detach. */ |
de0d863e | 5977 | remote_detach_pid (pid); |
82f73884 | 5978 | |
8020350c | 5979 | /* Exit only if this is the only active inferior. */ |
5b6d1e4f | 5980 | if (from_tty && !rs->extended && number_of_live_inferiors (this) == 1) |
0426ad51 | 5981 | gdb_puts (_("Ending remote debugging.\n")); |
82f73884 | 5982 | |
df5ad102 SM |
5983 | /* See if any thread of the inferior we are detaching has a pending fork |
5984 | status. In that case, we must detach from the child resulting from | |
5985 | that fork. */ | |
5986 | for (thread_info *thread : inf->non_exited_threads ()) | |
5987 | { | |
5988 | const target_waitstatus *ws = thread_pending_fork_status (thread); | |
5989 | ||
5990 | if (ws == nullptr) | |
5991 | continue; | |
5992 | ||
5993 | remote_detach_pid (ws->child_ptid ().pid ()); | |
5994 | } | |
5995 | ||
5996 | /* Check also for any pending fork events in the stop reply queue. */ | |
5997 | remote_notif_get_pending_events (¬if_client_stop); | |
5998 | for (stop_reply_up &reply : rs->stop_reply_queue) | |
5999 | { | |
6000 | if (reply->ptid.pid () != pid) | |
6001 | continue; | |
6002 | ||
6003 | if (!is_fork_status (reply->ws.kind ())) | |
6004 | continue; | |
6005 | ||
6006 | remote_detach_pid (reply->ws.child_ptid ().pid ()); | |
6007 | } | |
6008 | ||
5b6d1e4f | 6009 | thread_info *tp = find_thread_ptid (this, inferior_ptid); |
00431a78 | 6010 | |
de0d863e DB |
6011 | /* Check to see if we are detaching a fork parent. Note that if we |
6012 | are detaching a fork child, tp == NULL. */ | |
6013 | is_fork_parent = (tp != NULL | |
183be222 | 6014 | && tp->pending_follow.kind () == TARGET_WAITKIND_FORKED); |
de0d863e DB |
6015 | |
6016 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
6017 | breakpoints that should be available for the followed inferior. */ | |
6018 | if (!is_fork_parent) | |
f67c0c91 | 6019 | { |
249b5733 PA |
6020 | /* Save the pid as a string before mourning, since that will |
6021 | unpush the remote target, and we need the string after. */ | |
f2907e49 | 6022 | std::string infpid = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
6023 | |
6024 | target_mourn_inferior (inferior_ptid); | |
6025 | if (print_inferior_events) | |
6cb06a8c TT |
6026 | gdb_printf (_("[Inferior %d (%s) detached]\n"), |
6027 | inf->num, infpid.c_str ()); | |
f67c0c91 | 6028 | } |
de0d863e DB |
6029 | else |
6030 | { | |
0ac55310 | 6031 | switch_to_no_thread (); |
00431a78 | 6032 | detach_inferior (current_inferior ()); |
de0d863e | 6033 | } |
2d717e4f DJ |
6034 | } |
6035 | ||
f6ac5f3d PA |
6036 | void |
6037 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 6038 | { |
00431a78 | 6039 | remote_detach_1 (inf, from_tty); |
2d717e4f DJ |
6040 | } |
6041 | ||
f6ac5f3d PA |
6042 | void |
6043 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 6044 | { |
00431a78 | 6045 | remote_detach_1 (inf, from_tty); |
de0d863e DB |
6046 | } |
6047 | ||
6048 | /* Target follow-fork function for remote targets. On entry, and | |
6049 | at return, the current inferior is the fork parent. | |
6050 | ||
6051 | Note that although this is currently only used for extended-remote, | |
6052 | it is named remote_follow_fork in anticipation of using it for the | |
6053 | remote target as well. */ | |
6054 | ||
e97007b6 | 6055 | void |
82d1f134 SM |
6056 | remote_target::follow_fork (inferior *child_inf, ptid_t child_ptid, |
6057 | target_waitkind fork_kind, bool follow_child, | |
6058 | bool detach_fork) | |
de0d863e | 6059 | { |
82d1f134 SM |
6060 | process_stratum_target::follow_fork (child_inf, child_ptid, |
6061 | fork_kind, follow_child, detach_fork); | |
6062 | ||
de0d863e DB |
6063 | struct remote_state *rs = get_remote_state (); |
6064 | ||
3a849a34 SM |
6065 | if ((fork_kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
6066 | || (fork_kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
6067 | { |
6068 | /* When following the parent and detaching the child, we detach | |
6069 | the child here. For the case of following the child and | |
6070 | detaching the parent, the detach is done in the target- | |
6071 | independent follow fork code in infrun.c. We can't use | |
6072 | target_detach when detaching an unfollowed child because | |
6073 | the client side doesn't know anything about the child. */ | |
6074 | if (detach_fork && !follow_child) | |
6075 | { | |
6076 | /* Detach the fork child. */ | |
3a849a34 | 6077 | remote_detach_pid (child_ptid.pid ()); |
de0d863e DB |
6078 | } |
6079 | } | |
c906108c SS |
6080 | } |
6081 | ||
94585166 | 6082 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
294c36eb | 6083 | in the program space of the new inferior. */ |
94585166 | 6084 | |
f6ac5f3d | 6085 | void |
294c36eb SM |
6086 | remote_target::follow_exec (inferior *follow_inf, ptid_t ptid, |
6087 | const char *execd_pathname) | |
94585166 | 6088 | { |
294c36eb SM |
6089 | process_stratum_target::follow_exec (follow_inf, ptid, execd_pathname); |
6090 | ||
94585166 DB |
6091 | /* We know that this is a target file name, so if it has the "target:" |
6092 | prefix we strip it off before saving it in the program space. */ | |
6093 | if (is_target_filename (execd_pathname)) | |
6094 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
6095 | ||
294c36eb | 6096 | set_pspace_remote_exec_file (follow_inf->pspace, execd_pathname); |
94585166 DB |
6097 | } |
6098 | ||
6ad8ae5c DJ |
6099 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
6100 | ||
f6ac5f3d PA |
6101 | void |
6102 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 6103 | { |
43ff13b4 | 6104 | if (args) |
2d717e4f | 6105 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 6106 | |
8020350c | 6107 | /* Make sure we unpush even the extended remote targets. Calling |
5b6d1e4f PA |
6108 | target_mourn_inferior won't unpush, and |
6109 | remote_target::mourn_inferior won't unpush if there is more than | |
6110 | one inferior left. */ | |
6111 | remote_unpush_target (this); | |
2d717e4f | 6112 | |
43ff13b4 | 6113 | if (from_tty) |
0426ad51 | 6114 | gdb_puts ("Ending remote debugging.\n"); |
43ff13b4 JM |
6115 | } |
6116 | ||
2d717e4f DJ |
6117 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
6118 | be chatty about it. */ | |
6119 | ||
f6ac5f3d PA |
6120 | void |
6121 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
6122 | { |
6123 | struct remote_state *rs = get_remote_state (); | |
be86555c | 6124 | int pid; |
96ef3384 | 6125 | char *wait_status = NULL; |
2d717e4f | 6126 | |
74164c56 | 6127 | pid = parse_pid_to_attach (args); |
2d717e4f | 6128 | |
74164c56 JK |
6129 | /* Remote PID can be freely equal to getpid, do not check it here the same |
6130 | way as in other targets. */ | |
2d717e4f | 6131 | |
4082afcc | 6132 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
6133 | error (_("This target does not support attaching to a process")); |
6134 | ||
bc521517 | 6135 | target_announce_attach (from_tty, pid); |
7cee1e54 | 6136 | |
8d64371b | 6137 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f | 6138 | putpkt (rs->buf); |
8d64371b | 6139 | getpkt (&rs->buf, 0); |
2d717e4f | 6140 | |
4082afcc PA |
6141 | switch (packet_ok (rs->buf, |
6142 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 6143 | { |
4082afcc | 6144 | case PACKET_OK: |
6efcd9a8 | 6145 | if (!target_is_non_stop_p ()) |
74531fed PA |
6146 | { |
6147 | /* Save the reply for later. */ | |
8d64371b TT |
6148 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
6149 | strcpy (wait_status, rs->buf.data ()); | |
74531fed | 6150 | } |
8d64371b | 6151 | else if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 6152 | error (_("Attaching to %s failed with: %s"), |
a068643d | 6153 | target_pid_to_str (ptid_t (pid)).c_str (), |
8d64371b | 6154 | rs->buf.data ()); |
4082afcc PA |
6155 | break; |
6156 | case PACKET_UNKNOWN: | |
6157 | error (_("This target does not support attaching to a process")); | |
6158 | default: | |
50fa3001 SDJ |
6159 | error (_("Attaching to %s failed"), |
6160 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
2d717e4f | 6161 | } |
2d717e4f | 6162 | |
0ac55310 | 6163 | switch_to_inferior_no_thread (remote_add_inferior (false, pid, 1, 0)); |
bad34192 | 6164 | |
f2907e49 | 6165 | inferior_ptid = ptid_t (pid); |
79d7f229 | 6166 | |
6efcd9a8 | 6167 | if (target_is_non_stop_p ()) |
bad34192 | 6168 | { |
bad34192 | 6169 | /* Get list of threads. */ |
f6ac5f3d | 6170 | update_thread_list (); |
82f73884 | 6171 | |
0ac55310 PA |
6172 | thread_info *thread = first_thread_of_inferior (current_inferior ()); |
6173 | if (thread != nullptr) | |
6174 | switch_to_thread (thread); | |
bad34192 PA |
6175 | |
6176 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 6177 | record_currthread (rs, minus_one_ptid); |
bad34192 | 6178 | } |
74531fed | 6179 | else |
bad34192 | 6180 | { |
0ac55310 PA |
6181 | /* Now, if we have thread information, update the main thread's |
6182 | ptid. */ | |
6183 | ptid_t curr_ptid = remote_current_thread (ptid_t (pid)); | |
bad34192 | 6184 | |
b622494e AB |
6185 | /* Add the main thread to the thread list. We add the thread |
6186 | silently in this case (the final true parameter). */ | |
6187 | thread_info *thr = remote_add_thread (curr_ptid, true, true, true); | |
0ac55310 PA |
6188 | |
6189 | switch_to_thread (thr); | |
bad34192 | 6190 | } |
c0a2216e | 6191 | |
96ef3384 UW |
6192 | /* Next, if the target can specify a description, read it. We do |
6193 | this before anything involving memory or registers. */ | |
6194 | target_find_description (); | |
6195 | ||
6efcd9a8 | 6196 | if (!target_is_non_stop_p ()) |
74531fed PA |
6197 | { |
6198 | /* Use the previously fetched status. */ | |
6199 | gdb_assert (wait_status != NULL); | |
6200 | ||
4f626cad AB |
6201 | struct notif_event *reply |
6202 | = remote_notif_parse (this, ¬if_client_stop, wait_status); | |
74531fed | 6203 | |
4f626cad | 6204 | push_stop_reply ((struct stop_reply *) reply); |
74531fed PA |
6205 | } |
6206 | else | |
621cc310 PA |
6207 | { |
6208 | gdb_assert (wait_status == NULL); | |
6209 | ||
6210 | gdb_assert (target_can_async_p ()); | |
621cc310 | 6211 | } |
2d717e4f DJ |
6212 | } |
6213 | ||
b9c1d481 AS |
6214 | /* Implementation of the to_post_attach method. */ |
6215 | ||
f6ac5f3d PA |
6216 | void |
6217 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 6218 | { |
6efcd9a8 PA |
6219 | /* Get text, data & bss offsets. */ |
6220 | get_offsets (); | |
6221 | ||
b9c1d481 AS |
6222 | /* In certain cases GDB might not have had the chance to start |
6223 | symbol lookup up until now. This could happen if the debugged | |
6224 | binary is not using shared libraries, the vsyscall page is not | |
6225 | present (on Linux) and the binary itself hadn't changed since the | |
6226 | debugging process was started. */ | |
a42d7dd8 | 6227 | if (current_program_space->symfile_object_file != NULL) |
b9c1d481 AS |
6228 | remote_check_symbols(); |
6229 | } | |
6230 | ||
c906108c | 6231 | \f |
506fb367 DJ |
6232 | /* Check for the availability of vCont. This function should also check |
6233 | the response. */ | |
c906108c | 6234 | |
6b8edb51 PA |
6235 | void |
6236 | remote_target::remote_vcont_probe () | |
c906108c | 6237 | { |
6b8edb51 | 6238 | remote_state *rs = get_remote_state (); |
2e9f7625 | 6239 | char *buf; |
6d820c5c | 6240 | |
8d64371b | 6241 | strcpy (rs->buf.data (), "vCont?"); |
2e9f7625 | 6242 | putpkt (rs->buf); |
8d64371b TT |
6243 | getpkt (&rs->buf, 0); |
6244 | buf = rs->buf.data (); | |
c906108c | 6245 | |
506fb367 | 6246 | /* Make sure that the features we assume are supported. */ |
61012eef | 6247 | if (startswith (buf, "vCont")) |
506fb367 DJ |
6248 | { |
6249 | char *p = &buf[5]; | |
750ce8d1 | 6250 | int support_c, support_C; |
506fb367 | 6251 | |
750ce8d1 YQ |
6252 | rs->supports_vCont.s = 0; |
6253 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
6254 | support_c = 0; |
6255 | support_C = 0; | |
d458bd84 | 6256 | rs->supports_vCont.t = 0; |
c1e36e3e | 6257 | rs->supports_vCont.r = 0; |
506fb367 DJ |
6258 | while (p && *p == ';') |
6259 | { | |
6260 | p++; | |
6261 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 6262 | rs->supports_vCont.s = 1; |
506fb367 | 6263 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 6264 | rs->supports_vCont.S = 1; |
506fb367 DJ |
6265 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6266 | support_c = 1; | |
6267 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
6268 | support_C = 1; | |
74531fed | 6269 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 6270 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
6271 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6272 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
6273 | |
6274 | p = strchr (p, ';'); | |
6275 | } | |
c906108c | 6276 | |
750ce8d1 YQ |
6277 | /* If c, and C are not all supported, we can't use vCont. Clearing |
6278 | BUF will make packet_ok disable the packet. */ | |
6279 | if (!support_c || !support_C) | |
506fb367 DJ |
6280 | buf[0] = 0; |
6281 | } | |
c906108c | 6282 | |
8d64371b | 6283 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCont]); |
5b6d1e4f | 6284 | rs->supports_vCont_probed = true; |
506fb367 | 6285 | } |
c906108c | 6286 | |
0d8f58ca PA |
6287 | /* Helper function for building "vCont" resumptions. Write a |
6288 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
6289 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
6290 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
6291 | resumed thread should be single-stepped and/or signalled. If PTID | |
6292 | equals minus_one_ptid, then all threads are resumed; if PTID | |
d51926f0 PA |
6293 | represents a process, then all threads of the process are |
6294 | resumed. */ | |
0d8f58ca | 6295 | |
6b8edb51 PA |
6296 | char * |
6297 | remote_target::append_resumption (char *p, char *endp, | |
6298 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
6299 | { |
6300 | struct remote_state *rs = get_remote_state (); | |
6301 | ||
a493e3e2 | 6302 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 6303 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
6304 | else if (step |
6305 | /* GDB is willing to range step. */ | |
6306 | && use_range_stepping | |
6307 | /* Target supports range stepping. */ | |
6308 | && rs->supports_vCont.r | |
6309 | /* We don't currently support range stepping multiple | |
6310 | threads with a wildcard (though the protocol allows it, | |
6311 | so stubs shouldn't make an active effort to forbid | |
6312 | it). */ | |
0e998d96 | 6313 | && !(remote_multi_process_p (rs) && ptid.is_pid ())) |
c1e36e3e PA |
6314 | { |
6315 | struct thread_info *tp; | |
6316 | ||
d7e15655 | 6317 | if (ptid == minus_one_ptid) |
c1e36e3e PA |
6318 | { |
6319 | /* If we don't know about the target thread's tid, then | |
6320 | we're resuming magic_null_ptid (see caller). */ | |
5b6d1e4f | 6321 | tp = find_thread_ptid (this, magic_null_ptid); |
c1e36e3e PA |
6322 | } |
6323 | else | |
5b6d1e4f | 6324 | tp = find_thread_ptid (this, ptid); |
c1e36e3e PA |
6325 | gdb_assert (tp != NULL); |
6326 | ||
6327 | if (tp->control.may_range_step) | |
6328 | { | |
6329 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
6330 | ||
6331 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6332 | phex_nz (tp->control.step_range_start, | |
6333 | addr_size), | |
6334 | phex_nz (tp->control.step_range_end, | |
6335 | addr_size)); | |
6336 | } | |
6337 | else | |
6338 | p += xsnprintf (p, endp - p, ";s"); | |
6339 | } | |
0d8f58ca PA |
6340 | else if (step) |
6341 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6342 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6343 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6344 | else | |
6345 | p += xsnprintf (p, endp - p, ";c"); | |
6346 | ||
0e998d96 | 6347 | if (remote_multi_process_p (rs) && ptid.is_pid ()) |
0d8f58ca PA |
6348 | { |
6349 | ptid_t nptid; | |
6350 | ||
6351 | /* All (-1) threads of process. */ | |
184ea2f7 | 6352 | nptid = ptid_t (ptid.pid (), -1); |
0d8f58ca PA |
6353 | |
6354 | p += xsnprintf (p, endp - p, ":"); | |
6355 | p = write_ptid (p, endp, nptid); | |
6356 | } | |
d7e15655 | 6357 | else if (ptid != minus_one_ptid) |
0d8f58ca PA |
6358 | { |
6359 | p += xsnprintf (p, endp - p, ":"); | |
6360 | p = write_ptid (p, endp, ptid); | |
6361 | } | |
6362 | ||
6363 | return p; | |
6364 | } | |
6365 | ||
799a2abe PA |
6366 | /* Clear the thread's private info on resume. */ |
6367 | ||
6368 | static void | |
6369 | resume_clear_thread_private_info (struct thread_info *thread) | |
6370 | { | |
6371 | if (thread->priv != NULL) | |
6372 | { | |
7aabaf9d SM |
6373 | remote_thread_info *priv = get_remote_thread_info (thread); |
6374 | ||
6375 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6376 | priv->watch_data_address = 0; | |
799a2abe PA |
6377 | } |
6378 | } | |
6379 | ||
e5ef252a PA |
6380 | /* Append a vCont continue-with-signal action for threads that have a |
6381 | non-zero stop signal. */ | |
6382 | ||
6b8edb51 PA |
6383 | char * |
6384 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6385 | ptid_t ptid) | |
e5ef252a | 6386 | { |
5b6d1e4f | 6387 | for (thread_info *thread : all_non_exited_threads (this, ptid)) |
08036331 | 6388 | if (inferior_ptid != thread->ptid |
1edb66d8 | 6389 | && thread->stop_signal () != GDB_SIGNAL_0) |
e5ef252a PA |
6390 | { |
6391 | p = append_resumption (p, endp, thread->ptid, | |
1edb66d8 SM |
6392 | 0, thread->stop_signal ()); |
6393 | thread->set_stop_signal (GDB_SIGNAL_0); | |
799a2abe | 6394 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6395 | } |
6396 | ||
6397 | return p; | |
6398 | } | |
6399 | ||
7b68ffbb PA |
6400 | /* Set the target running, using the packets that use Hc |
6401 | (c/s/C/S). */ | |
6402 | ||
6b8edb51 PA |
6403 | void |
6404 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6405 | gdb_signal siggnal) | |
7b68ffbb PA |
6406 | { |
6407 | struct remote_state *rs = get_remote_state (); | |
7b68ffbb PA |
6408 | char *buf; |
6409 | ||
6410 | rs->last_sent_signal = siggnal; | |
6411 | rs->last_sent_step = step; | |
6412 | ||
6413 | /* The c/s/C/S resume packets use Hc, so set the continue | |
6414 | thread. */ | |
d7e15655 | 6415 | if (ptid == minus_one_ptid) |
7b68ffbb PA |
6416 | set_continue_thread (any_thread_ptid); |
6417 | else | |
6418 | set_continue_thread (ptid); | |
6419 | ||
5b6d1e4f | 6420 | for (thread_info *thread : all_non_exited_threads (this)) |
7b68ffbb PA |
6421 | resume_clear_thread_private_info (thread); |
6422 | ||
8d64371b | 6423 | buf = rs->buf.data (); |
6b8edb51 | 6424 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6425 | { |
6426 | /* We don't pass signals to the target in reverse exec mode. */ | |
6427 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
6428 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
6429 | siggnal); | |
6430 | ||
6431 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
6432 | error (_("Remote reverse-step not supported.")); | |
6433 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
6434 | error (_("Remote reverse-continue not supported.")); | |
6435 | ||
6436 | strcpy (buf, step ? "bs" : "bc"); | |
6437 | } | |
6438 | else if (siggnal != GDB_SIGNAL_0) | |
6439 | { | |
6440 | buf[0] = step ? 'S' : 'C'; | |
6441 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
6442 | buf[2] = tohex (((int) siggnal) & 0xf); | |
6443 | buf[3] = '\0'; | |
6444 | } | |
6445 | else | |
6446 | strcpy (buf, step ? "s" : "c"); | |
6447 | ||
6448 | putpkt (buf); | |
6449 | } | |
6450 | ||
d51926f0 PA |
6451 | /* Resume the remote inferior by using a "vCont" packet. SCOPE_PTID, |
6452 | STEP, and SIGGNAL have the same meaning as in target_resume. This | |
6453 | function returns non-zero iff it resumes the inferior. | |
44eaed12 | 6454 | |
7b68ffbb PA |
6455 | This function issues a strict subset of all possible vCont commands |
6456 | at the moment. */ | |
44eaed12 | 6457 | |
6b8edb51 | 6458 | int |
d51926f0 | 6459 | remote_target::remote_resume_with_vcont (ptid_t scope_ptid, int step, |
6b8edb51 | 6460 | enum gdb_signal siggnal) |
506fb367 DJ |
6461 | { |
6462 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
6463 | char *p; |
6464 | char *endp; | |
44eaed12 | 6465 | |
7b68ffbb | 6466 | /* No reverse execution actions defined for vCont. */ |
6b8edb51 | 6467 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6468 | return 0; |
6469 | ||
4082afcc | 6470 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6471 | remote_vcont_probe (); |
44eaed12 | 6472 | |
4082afcc | 6473 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 6474 | return 0; |
44eaed12 | 6475 | |
8d64371b TT |
6476 | p = rs->buf.data (); |
6477 | endp = p + get_remote_packet_size (); | |
82f73884 | 6478 | |
506fb367 DJ |
6479 | /* If we could generate a wider range of packets, we'd have to worry |
6480 | about overflowing BUF. Should there be a generic | |
6481 | "multi-part-packet" packet? */ | |
6482 | ||
0d8f58ca PA |
6483 | p += xsnprintf (p, endp - p, "vCont"); |
6484 | ||
d51926f0 | 6485 | if (scope_ptid == magic_null_ptid) |
c906108c | 6486 | { |
79d7f229 PA |
6487 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
6488 | so we don't have any TID numbers the inferior will | |
6489 | understand. Make sure to only send forms that do not specify | |
6490 | a TID. */ | |
a9cbf802 | 6491 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 6492 | } |
d51926f0 | 6493 | else if (scope_ptid == minus_one_ptid || scope_ptid.is_pid ()) |
506fb367 | 6494 | { |
0d8f58ca PA |
6495 | /* Resume all threads (of all processes, or of a single |
6496 | process), with preference for INFERIOR_PTID. This assumes | |
6497 | inferior_ptid belongs to the set of all threads we are about | |
6498 | to resume. */ | |
a493e3e2 | 6499 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 6500 | { |
0d8f58ca PA |
6501 | /* Step inferior_ptid, with or without signal. */ |
6502 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 6503 | } |
0d8f58ca | 6504 | |
e5ef252a PA |
6505 | /* Also pass down any pending signaled resumption for other |
6506 | threads not the current. */ | |
d51926f0 | 6507 | p = append_pending_thread_resumptions (p, endp, scope_ptid); |
e5ef252a | 6508 | |
0d8f58ca | 6509 | /* And continue others without a signal. */ |
d51926f0 | 6510 | append_resumption (p, endp, scope_ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
6511 | } |
6512 | else | |
506fb367 | 6513 | { |
d51926f0 PA |
6514 | /* Scheduler locking; resume only SCOPE_PTID. */ |
6515 | append_resumption (p, endp, scope_ptid, step, siggnal); | |
506fb367 | 6516 | } |
c906108c | 6517 | |
8d64371b | 6518 | gdb_assert (strlen (rs->buf.data ()) < get_remote_packet_size ()); |
82f73884 | 6519 | putpkt (rs->buf); |
506fb367 | 6520 | |
6efcd9a8 | 6521 | if (target_is_non_stop_p ()) |
74531fed PA |
6522 | { |
6523 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6524 | reply will be reported asynchronously by means of a `%Stop' | |
6525 | notification. */ | |
8d64371b TT |
6526 | getpkt (&rs->buf, 0); |
6527 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6528 | error (_("Unexpected vCont reply in non-stop mode: %s"), | |
6529 | rs->buf.data ()); | |
74531fed PA |
6530 | } |
6531 | ||
506fb367 | 6532 | return 1; |
c906108c | 6533 | } |
43ff13b4 | 6534 | |
506fb367 DJ |
6535 | /* Tell the remote machine to resume. */ |
6536 | ||
f6ac5f3d | 6537 | void |
d51926f0 | 6538 | remote_target::resume (ptid_t scope_ptid, int step, enum gdb_signal siggnal) |
43ff13b4 | 6539 | { |
d01949b6 | 6540 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6541 | |
85ad3aaf PA |
6542 | /* When connected in non-stop mode, the core resumes threads |
6543 | individually. Resuming remote threads directly in target_resume | |
6544 | would thus result in sending one packet per thread. Instead, to | |
6545 | minimize roundtrip latency, here we just store the resume | |
c9d22089 SM |
6546 | request (put the thread in RESUMED_PENDING_VCONT state); the actual remote |
6547 | resumption will be done in remote_target::commit_resume, where we'll be | |
6548 | able to do vCont action coalescing. */ | |
f6ac5f3d | 6549 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6550 | { |
d51926f0 PA |
6551 | remote_thread_info *remote_thr |
6552 | = get_remote_thread_info (inferior_thread ()); | |
7aabaf9d | 6553 | |
c9d22089 SM |
6554 | /* We don't expect the core to ask to resume an already resumed (from |
6555 | its point of view) thread. */ | |
a6c11cbb | 6556 | gdb_assert (remote_thr->get_resume_state () == resume_state::NOT_RESUMED); |
c9d22089 SM |
6557 | |
6558 | remote_thr->set_resumed_pending_vcont (step, siggnal); | |
d51926f0 PA |
6559 | |
6560 | /* There's actually nothing that says that the core can't | |
6561 | request a wildcard resume in non-stop mode, though. It's | |
6562 | just that we know it doesn't currently, so we don't bother | |
6563 | with it. */ | |
6564 | gdb_assert (scope_ptid == inferior_ptid); | |
85ad3aaf PA |
6565 | return; |
6566 | } | |
6567 | ||
722247f1 YQ |
6568 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6569 | (explained in remote-notif.c:handle_notification) so | |
6570 | remote_notif_process is not called. We need find a place where | |
6571 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6572 | before resuming inferior, because inferior was stopped and no RSP | |
6573 | traffic at that moment. */ | |
6efcd9a8 | 6574 | if (!target_is_non_stop_p ()) |
5965e028 | 6575 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6576 | |
f6ac5f3d | 6577 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6578 | |
7b68ffbb | 6579 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
d51926f0 PA |
6580 | if (!remote_resume_with_vcont (scope_ptid, step, siggnal)) |
6581 | remote_resume_with_hc (scope_ptid, step, siggnal); | |
43ff13b4 | 6582 | |
c9d22089 | 6583 | /* Update resumed state tracked by the remote target. */ |
d51926f0 | 6584 | for (thread_info *tp : all_non_exited_threads (this, scope_ptid)) |
c9d22089 SM |
6585 | get_remote_thread_info (tp)->set_resumed (); |
6586 | ||
e24a49d8 PA |
6587 | /* We've just told the target to resume. The remote server will |
6588 | wait for the inferior to stop, and then send a stop reply. In | |
6589 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6590 | because the stub wouldn't be ready to process it. This applies |
6591 | only to the base all-stop protocol, however. In non-stop (which | |
6592 | only supports vCont), the stub replies with an "OK", and is | |
6593 | immediate able to process further serial input. */ | |
6efcd9a8 | 6594 | if (!target_is_non_stop_p ()) |
74531fed | 6595 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6596 | } |
85ad3aaf | 6597 | |
85ad3aaf PA |
6598 | /* Private per-inferior info for target remote processes. */ |
6599 | ||
089354bb | 6600 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6601 | { |
6602 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6603 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6604 | }; |
6605 | ||
089354bb SM |
6606 | /* Get the remote private inferior data associated to INF. */ |
6607 | ||
6608 | static remote_inferior * | |
6609 | get_remote_inferior (inferior *inf) | |
6610 | { | |
6611 | if (inf->priv == NULL) | |
6612 | inf->priv.reset (new remote_inferior); | |
6613 | ||
6614 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6615 | } | |
6616 | ||
f5db4863 | 6617 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6618 | outgoing packet buffer. This is used to send multiple vCont |
6619 | packets if we have more actions than would fit a single packet. */ | |
6620 | ||
f5db4863 | 6621 | class vcont_builder |
85ad3aaf | 6622 | { |
f5db4863 | 6623 | public: |
6b8edb51 PA |
6624 | explicit vcont_builder (remote_target *remote) |
6625 | : m_remote (remote) | |
f5db4863 PA |
6626 | { |
6627 | restart (); | |
6628 | } | |
6629 | ||
6630 | void flush (); | |
6631 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6632 | ||
6633 | private: | |
6634 | void restart (); | |
6635 | ||
6b8edb51 PA |
6636 | /* The remote target. */ |
6637 | remote_target *m_remote; | |
6638 | ||
85ad3aaf PA |
6639 | /* Pointer to the first action. P points here if no action has been |
6640 | appended yet. */ | |
f5db4863 | 6641 | char *m_first_action; |
85ad3aaf PA |
6642 | |
6643 | /* Where the next action will be appended. */ | |
f5db4863 | 6644 | char *m_p; |
85ad3aaf PA |
6645 | |
6646 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6647 | char *m_endp; |
85ad3aaf PA |
6648 | }; |
6649 | ||
6650 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6651 | ||
f5db4863 PA |
6652 | void |
6653 | vcont_builder::restart () | |
85ad3aaf | 6654 | { |
6b8edb51 | 6655 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6656 | |
8d64371b TT |
6657 | m_p = rs->buf.data (); |
6658 | m_endp = m_p + m_remote->get_remote_packet_size (); | |
f5db4863 PA |
6659 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6660 | m_first_action = m_p; | |
85ad3aaf PA |
6661 | } |
6662 | ||
6663 | /* If the vCont packet being built has any action, send it to the | |
6664 | remote end. */ | |
6665 | ||
f5db4863 PA |
6666 | void |
6667 | vcont_builder::flush () | |
85ad3aaf PA |
6668 | { |
6669 | struct remote_state *rs; | |
6670 | ||
f5db4863 | 6671 | if (m_p == m_first_action) |
85ad3aaf PA |
6672 | return; |
6673 | ||
6b8edb51 PA |
6674 | rs = m_remote->get_remote_state (); |
6675 | m_remote->putpkt (rs->buf); | |
8d64371b TT |
6676 | m_remote->getpkt (&rs->buf, 0); |
6677 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6678 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf.data ()); | |
85ad3aaf PA |
6679 | } |
6680 | ||
6681 | /* The largest action is range-stepping, with its two addresses. This | |
6682 | is more than sufficient. If a new, bigger action is created, it'll | |
6683 | quickly trigger a failed assertion in append_resumption (and we'll | |
6684 | just bump this). */ | |
6685 | #define MAX_ACTION_SIZE 200 | |
6686 | ||
6687 | /* Append a new vCont action in the outgoing packet being built. If | |
6688 | the action doesn't fit the packet along with previous actions, push | |
6689 | what we've got so far to the remote end and start over a new vCont | |
6690 | packet (with the new action). */ | |
6691 | ||
f5db4863 PA |
6692 | void |
6693 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6694 | { |
6695 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6696 | |
6b8edb51 PA |
6697 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6698 | ptid, step, siggnal); | |
85ad3aaf PA |
6699 | |
6700 | /* Check whether this new action would fit in the vCont packet along | |
6701 | with previous actions. If not, send what we've got so far and | |
6702 | start a new vCont packet. */ | |
f5db4863 PA |
6703 | size_t rsize = endp - buf; |
6704 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6705 | { |
f5db4863 PA |
6706 | flush (); |
6707 | restart (); | |
85ad3aaf PA |
6708 | |
6709 | /* Should now fit. */ | |
f5db4863 | 6710 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6711 | } |
6712 | ||
f5db4863 PA |
6713 | memcpy (m_p, buf, rsize); |
6714 | m_p += rsize; | |
6715 | *m_p = '\0'; | |
85ad3aaf PA |
6716 | } |
6717 | ||
6718 | /* to_commit_resume implementation. */ | |
6719 | ||
f6ac5f3d | 6720 | void |
1192f124 | 6721 | remote_target::commit_resumed () |
85ad3aaf | 6722 | { |
85ad3aaf PA |
6723 | /* If connected in all-stop mode, we'd send the remote resume |
6724 | request directly from remote_resume. Likewise if | |
6725 | reverse-debugging, as there are no defined vCont actions for | |
6726 | reverse execution. */ | |
f6ac5f3d | 6727 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6728 | return; |
6729 | ||
6730 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6731 | instead of resuming all threads of each process individually. | |
6732 | However, if any thread of a process must remain halted, we can't | |
6733 | send wildcard resumes and must send one action per thread. | |
6734 | ||
6735 | Care must be taken to not resume threads/processes the server | |
6736 | side already told us are stopped, but the core doesn't know about | |
6737 | yet, because the events are still in the vStopped notification | |
6738 | queue. For example: | |
6739 | ||
6740 | #1 => vCont s:p1.1;c | |
6741 | #2 <= OK | |
6742 | #3 <= %Stopped T05 p1.1 | |
6743 | #4 => vStopped | |
6744 | #5 <= T05 p1.2 | |
6745 | #6 => vStopped | |
6746 | #7 <= OK | |
6747 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6748 | #9 => vCont s:p1.1;c | |
6749 | ||
6750 | The last vCont above would resume thread p1.2 by mistake, because | |
6751 | the server has no idea that the event for p1.2 had not been | |
6752 | handled yet. | |
6753 | ||
6754 | The server side must similarly ignore resume actions for the | |
6755 | thread that has a pending %Stopped notification (and any other | |
6756 | threads with events pending), until GDB acks the notification | |
6757 | with vStopped. Otherwise, e.g., the following case is | |
6758 | mishandled: | |
6759 | ||
6760 | #1 => g (or any other packet) | |
6761 | #2 <= [registers] | |
6762 | #3 <= %Stopped T05 p1.2 | |
6763 | #4 => vCont s:p1.1;c | |
6764 | #5 <= OK | |
6765 | ||
6766 | Above, the server must not resume thread p1.2. GDB can't know | |
6767 | that p1.2 stopped until it acks the %Stopped notification, and | |
6768 | since from GDB's perspective all threads should be running, it | |
6769 | sends a "c" action. | |
6770 | ||
6771 | Finally, special care must also be given to handling fork/vfork | |
6772 | events. A (v)fork event actually tells us that two processes | |
6773 | stopped -- the parent and the child. Until we follow the fork, | |
6774 | we must not resume the child. Therefore, if we have a pending | |
6775 | fork follow, we must not send a global wildcard resume action | |
6776 | (vCont;c). We can still send process-wide wildcards though. */ | |
6777 | ||
6778 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
2f63ec5c | 6779 | bool may_global_wildcard_vcont = true; |
85ad3aaf PA |
6780 | |
6781 | /* And assume every process is individually wildcard-able too. */ | |
5b6d1e4f | 6782 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6783 | { |
089354bb SM |
6784 | remote_inferior *priv = get_remote_inferior (inf); |
6785 | ||
6786 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6787 | } |
6788 | ||
6789 | /* Check for any pending events (not reported or processed yet) and | |
6790 | disable process and global wildcard resumes appropriately. */ | |
6791 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6792 | ||
1192f124 SM |
6793 | bool any_pending_vcont_resume = false; |
6794 | ||
5b6d1e4f | 6795 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6796 | { |
c9d22089 SM |
6797 | remote_thread_info *priv = get_remote_thread_info (tp); |
6798 | ||
85ad3aaf PA |
6799 | /* If a thread of a process is not meant to be resumed, then we |
6800 | can't wildcard that process. */ | |
a6c11cbb | 6801 | if (priv->get_resume_state () == resume_state::NOT_RESUMED) |
85ad3aaf | 6802 | { |
089354bb | 6803 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6804 | |
6805 | /* And if we can't wildcard a process, we can't wildcard | |
6806 | everything either. */ | |
2f63ec5c | 6807 | may_global_wildcard_vcont = false; |
85ad3aaf PA |
6808 | continue; |
6809 | } | |
6810 | ||
1192f124 SM |
6811 | if (priv->get_resume_state () == resume_state::RESUMED_PENDING_VCONT) |
6812 | any_pending_vcont_resume = true; | |
6813 | ||
85ad3aaf PA |
6814 | /* If a thread is the parent of an unfollowed fork, then we |
6815 | can't do a global wildcard, as that would resume the fork | |
6816 | child. */ | |
28561a65 | 6817 | if (thread_pending_fork_status (tp) != nullptr) |
2f63ec5c | 6818 | may_global_wildcard_vcont = false; |
85ad3aaf PA |
6819 | } |
6820 | ||
1192f124 SM |
6821 | /* We didn't have any resumed thread pending a vCont resume, so nothing to |
6822 | do. */ | |
6823 | if (!any_pending_vcont_resume) | |
6824 | return; | |
6825 | ||
85ad3aaf PA |
6826 | /* Now let's build the vCont packet(s). Actions must be appended |
6827 | from narrower to wider scopes (thread -> process -> global). If | |
6828 | we end up with too many actions for a single packet vcont_builder | |
6829 | flushes the current vCont packet to the remote side and starts a | |
6830 | new one. */ | |
6b8edb51 | 6831 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
6832 | |
6833 | /* Threads first. */ | |
5b6d1e4f | 6834 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6835 | { |
7aabaf9d | 6836 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf | 6837 | |
c9d22089 SM |
6838 | /* If the thread was previously vCont-resumed, no need to send a specific |
6839 | action for it. If we didn't receive a resume request for it, don't | |
6840 | send an action for it either. */ | |
a6c11cbb | 6841 | if (remote_thr->get_resume_state () != resume_state::RESUMED_PENDING_VCONT) |
85ad3aaf PA |
6842 | continue; |
6843 | ||
6844 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6845 | ||
1192f124 SM |
6846 | /* We should never be commit-resuming a thread that has a stop reply. |
6847 | Otherwise, we would end up reporting a stop event for a thread while | |
6848 | it is running on the remote target. */ | |
6849 | remote_state *rs = get_remote_state (); | |
6850 | for (const auto &stop_reply : rs->stop_reply_queue) | |
6851 | gdb_assert (stop_reply->ptid != tp->ptid); | |
6852 | ||
c9d22089 SM |
6853 | const resumed_pending_vcont_info &info |
6854 | = remote_thr->resumed_pending_vcont_info (); | |
85ad3aaf | 6855 | |
c9d22089 SM |
6856 | /* Check if we need to send a specific action for this thread. If not, |
6857 | it will be included in a wildcard resume instead. */ | |
6858 | if (info.step || info.sig != GDB_SIGNAL_0 | |
6859 | || !get_remote_inferior (tp->inf)->may_wildcard_vcont) | |
6860 | vcont_builder.push_action (tp->ptid, info.step, info.sig); | |
6861 | ||
6862 | remote_thr->set_resumed (); | |
85ad3aaf PA |
6863 | } |
6864 | ||
6865 | /* Now check whether we can send any process-wide wildcard. This is | |
6866 | to avoid sending a global wildcard in the case nothing is | |
6867 | supposed to be resumed. */ | |
2f63ec5c | 6868 | bool any_process_wildcard = false; |
85ad3aaf | 6869 | |
5b6d1e4f | 6870 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6871 | { |
089354bb | 6872 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6873 | { |
2f63ec5c | 6874 | any_process_wildcard = true; |
85ad3aaf PA |
6875 | break; |
6876 | } | |
6877 | } | |
6878 | ||
6879 | if (any_process_wildcard) | |
6880 | { | |
6881 | /* If all processes are wildcard-able, then send a single "c" | |
6882 | action, otherwise, send an "all (-1) threads of process" | |
6883 | continue action for each running process, if any. */ | |
6884 | if (may_global_wildcard_vcont) | |
6885 | { | |
f5db4863 PA |
6886 | vcont_builder.push_action (minus_one_ptid, |
6887 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6888 | } |
6889 | else | |
6890 | { | |
5b6d1e4f | 6891 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6892 | { |
089354bb | 6893 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6894 | { |
f2907e49 | 6895 | vcont_builder.push_action (ptid_t (inf->pid), |
f5db4863 | 6896 | false, GDB_SIGNAL_0); |
85ad3aaf PA |
6897 | } |
6898 | } | |
6899 | } | |
6900 | } | |
6901 | ||
f5db4863 | 6902 | vcont_builder.flush (); |
85ad3aaf PA |
6903 | } |
6904 | ||
b4b1a226 SM |
6905 | /* Implementation of target_has_pending_events. */ |
6906 | ||
6907 | bool | |
6908 | remote_target::has_pending_events () | |
6909 | { | |
6910 | if (target_can_async_p ()) | |
6911 | { | |
6912 | remote_state *rs = get_remote_state (); | |
6913 | ||
6914 | if (async_event_handler_marked (rs->remote_async_inferior_event_token)) | |
6915 | return true; | |
6916 | ||
6917 | /* Note that BUFCNT can be negative, indicating sticky | |
6918 | error. */ | |
6919 | if (rs->remote_desc->bufcnt != 0) | |
6920 | return true; | |
6921 | } | |
6922 | return false; | |
6923 | } | |
6924 | ||
c906108c | 6925 | \f |
43ff13b4 | 6926 | |
74531fed PA |
6927 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6928 | thread, all threads of a remote process, or all threads of all | |
6929 | processes. */ | |
6930 | ||
6b8edb51 PA |
6931 | void |
6932 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
6933 | { |
6934 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6935 | char *p = rs->buf.data (); |
6936 | char *endp = p + get_remote_packet_size (); | |
74531fed | 6937 | |
1192f124 SM |
6938 | /* If any thread that needs to stop was resumed but pending a vCont |
6939 | resume, generate a phony stop_reply. However, first check | |
6940 | whether the thread wasn't resumed with a signal. Generating a | |
6941 | phony stop in that case would result in losing the signal. */ | |
6942 | bool needs_commit = false; | |
6943 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
6944 | { | |
6945 | remote_thread_info *remote_thr = get_remote_thread_info (tp); | |
6946 | ||
6947 | if (remote_thr->get_resume_state () | |
6948 | == resume_state::RESUMED_PENDING_VCONT) | |
6949 | { | |
6950 | const resumed_pending_vcont_info &info | |
6951 | = remote_thr->resumed_pending_vcont_info (); | |
6952 | if (info.sig != GDB_SIGNAL_0) | |
6953 | { | |
6954 | /* This signal must be forwarded to the inferior. We | |
6955 | could commit-resume just this thread, but its simpler | |
6956 | to just commit-resume everything. */ | |
6957 | needs_commit = true; | |
6958 | break; | |
6959 | } | |
6960 | } | |
6961 | } | |
6962 | ||
6963 | if (needs_commit) | |
6964 | commit_resumed (); | |
6965 | else | |
6966 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
6967 | { | |
6968 | remote_thread_info *remote_thr = get_remote_thread_info (tp); | |
6969 | ||
6970 | if (remote_thr->get_resume_state () | |
6971 | == resume_state::RESUMED_PENDING_VCONT) | |
6972 | { | |
6973 | remote_debug_printf ("Enqueueing phony stop reply for thread pending " | |
96bbe3ef TT |
6974 | "vCont-resume (%d, %ld, %s)", tp->ptid.pid(), |
6975 | tp->ptid.lwp (), | |
6976 | pulongest (tp->ptid.tid ())); | |
1192f124 SM |
6977 | |
6978 | /* Check that the thread wasn't resumed with a signal. | |
6979 | Generating a phony stop would result in losing the | |
6980 | signal. */ | |
6981 | const resumed_pending_vcont_info &info | |
6982 | = remote_thr->resumed_pending_vcont_info (); | |
6983 | gdb_assert (info.sig == GDB_SIGNAL_0); | |
6984 | ||
6985 | stop_reply *sr = new stop_reply (); | |
6986 | sr->ptid = tp->ptid; | |
6987 | sr->rs = rs; | |
183be222 | 6988 | sr->ws.set_stopped (GDB_SIGNAL_0); |
1192f124 SM |
6989 | sr->arch = tp->inf->gdbarch; |
6990 | sr->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6991 | sr->watch_data_address = 0; | |
6992 | sr->core = 0; | |
6993 | this->push_stop_reply (sr); | |
6994 | ||
6995 | /* Pretend that this thread was actually resumed on the | |
6996 | remote target, then stopped. If we leave it in the | |
6997 | RESUMED_PENDING_VCONT state and the commit_resumed | |
6998 | method is called while the stop reply is still in the | |
6999 | queue, we'll end up reporting a stop event to the core | |
7000 | for that thread while it is running on the remote | |
7001 | target... that would be bad. */ | |
7002 | remote_thr->set_resumed (); | |
7003 | } | |
7004 | } | |
7005 | ||
5b6d1e4f PA |
7006 | /* FIXME: This supports_vCont_probed check is a workaround until |
7007 | packet_support is per-connection. */ | |
7008 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN | |
7009 | || !rs->supports_vCont_probed) | |
6b8edb51 | 7010 | remote_vcont_probe (); |
74531fed | 7011 | |
d458bd84 | 7012 | if (!rs->supports_vCont.t) |
74531fed PA |
7013 | error (_("Remote server does not support stopping threads")); |
7014 | ||
d7e15655 | 7015 | if (ptid == minus_one_ptid |
0e998d96 | 7016 | || (!remote_multi_process_p (rs) && ptid.is_pid ())) |
74531fed PA |
7017 | p += xsnprintf (p, endp - p, "vCont;t"); |
7018 | else | |
7019 | { | |
7020 | ptid_t nptid; | |
7021 | ||
74531fed PA |
7022 | p += xsnprintf (p, endp - p, "vCont;t:"); |
7023 | ||
0e998d96 | 7024 | if (ptid.is_pid ()) |
74531fed | 7025 | /* All (-1) threads of process. */ |
184ea2f7 | 7026 | nptid = ptid_t (ptid.pid (), -1); |
74531fed PA |
7027 | else |
7028 | { | |
7029 | /* Small optimization: if we already have a stop reply for | |
7030 | this thread, no use in telling the stub we want this | |
7031 | stopped. */ | |
7032 | if (peek_stop_reply (ptid)) | |
7033 | return; | |
7034 | ||
7035 | nptid = ptid; | |
7036 | } | |
7037 | ||
a9cbf802 | 7038 | write_ptid (p, endp, nptid); |
74531fed PA |
7039 | } |
7040 | ||
7041 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
7042 | come in asynchronously by notification. */ | |
7043 | putpkt (rs->buf); | |
8d64371b TT |
7044 | getpkt (&rs->buf, 0); |
7045 | if (strcmp (rs->buf.data (), "OK") != 0) | |
a068643d | 7046 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid).c_str (), |
8d64371b | 7047 | rs->buf.data ()); |
74531fed PA |
7048 | } |
7049 | ||
bfedc46a PA |
7050 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
7051 | interrupt the remote target. It is undefined which thread of which | |
7052 | process reports the interrupt. */ | |
74531fed | 7053 | |
6b8edb51 PA |
7054 | void |
7055 | remote_target::remote_interrupt_as () | |
74531fed PA |
7056 | { |
7057 | struct remote_state *rs = get_remote_state (); | |
7058 | ||
3a29589a DJ |
7059 | rs->ctrlc_pending_p = 1; |
7060 | ||
74531fed | 7061 | /* If the inferior is stopped already, but the core didn't know |
4f626cad | 7062 | about it yet, just ignore the request. The pending stop events |
74531fed | 7063 | will be collected in remote_wait. */ |
4f626cad | 7064 | if (stop_reply_queue_length () > 0) |
74531fed PA |
7065 | return; |
7066 | ||
9a7071a8 JB |
7067 | /* Send interrupt_sequence to remote target. */ |
7068 | send_interrupt_sequence (); | |
74531fed PA |
7069 | } |
7070 | ||
de979965 PA |
7071 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
7072 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
7073 | reports the interrupt. Throws an error if the packet is not |
7074 | supported by the server. */ | |
de979965 | 7075 | |
6b8edb51 PA |
7076 | void |
7077 | remote_target::remote_interrupt_ns () | |
de979965 PA |
7078 | { |
7079 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
7080 | char *p = rs->buf.data (); |
7081 | char *endp = p + get_remote_packet_size (); | |
de979965 PA |
7082 | |
7083 | xsnprintf (p, endp - p, "vCtrlC"); | |
7084 | ||
7085 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
7086 | come in asynchronously by notification. */ | |
7087 | putpkt (rs->buf); | |
8d64371b | 7088 | getpkt (&rs->buf, 0); |
de979965 PA |
7089 | |
7090 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
7091 | { | |
7092 | case PACKET_OK: | |
7093 | break; | |
7094 | case PACKET_UNKNOWN: | |
e42de8c7 | 7095 | error (_("No support for interrupting the remote target.")); |
de979965 | 7096 | case PACKET_ERROR: |
8d64371b | 7097 | error (_("Interrupting target failed: %s"), rs->buf.data ()); |
de979965 | 7098 | } |
de979965 PA |
7099 | } |
7100 | ||
bfedc46a | 7101 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 7102 | |
f6ac5f3d PA |
7103 | void |
7104 | remote_target::stop (ptid_t ptid) | |
c906108c | 7105 | { |
2189c312 | 7106 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
c906108c | 7107 | |
6efcd9a8 | 7108 | if (target_is_non_stop_p ()) |
74531fed | 7109 | remote_stop_ns (ptid); |
c906108c | 7110 | else |
bfedc46a PA |
7111 | { |
7112 | /* We don't currently have a way to transparently pause the | |
7113 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 7114 | remote_interrupt_as (); |
bfedc46a PA |
7115 | } |
7116 | } | |
7117 | ||
7118 | /* Implement the to_interrupt function for the remote targets. */ | |
7119 | ||
f6ac5f3d PA |
7120 | void |
7121 | remote_target::interrupt () | |
bfedc46a | 7122 | { |
2189c312 | 7123 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
bfedc46a | 7124 | |
e42de8c7 PA |
7125 | if (target_is_non_stop_p ()) |
7126 | remote_interrupt_ns (); | |
bfedc46a | 7127 | else |
e42de8c7 | 7128 | remote_interrupt_as (); |
c906108c SS |
7129 | } |
7130 | ||
93692b58 PA |
7131 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
7132 | ||
f6ac5f3d PA |
7133 | void |
7134 | remote_target::pass_ctrlc () | |
93692b58 | 7135 | { |
2189c312 | 7136 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
93692b58 | 7137 | |
2189c312 | 7138 | struct remote_state *rs = get_remote_state (); |
93692b58 PA |
7139 | |
7140 | /* If we're starting up, we're not fully synced yet. Quit | |
7141 | immediately. */ | |
7142 | if (rs->starting_up) | |
7143 | quit (); | |
7144 | /* If ^C has already been sent once, offer to disconnect. */ | |
7145 | else if (rs->ctrlc_pending_p) | |
7146 | interrupt_query (); | |
7147 | else | |
e671cd59 | 7148 | target_interrupt (); |
93692b58 PA |
7149 | } |
7150 | ||
c906108c SS |
7151 | /* Ask the user what to do when an interrupt is received. */ |
7152 | ||
6b8edb51 PA |
7153 | void |
7154 | remote_target::interrupt_query () | |
c906108c | 7155 | { |
abc56d60 | 7156 | struct remote_state *rs = get_remote_state (); |
c906108c | 7157 | |
abc56d60 | 7158 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 7159 | { |
abc56d60 PA |
7160 | if (query (_("The target is not responding to interrupt requests.\n" |
7161 | "Stop debugging it? "))) | |
74531fed | 7162 | { |
5b6d1e4f | 7163 | remote_unpush_target (this); |
abc56d60 | 7164 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
7165 | } |
7166 | } | |
abc56d60 PA |
7167 | else |
7168 | { | |
7169 | if (query (_("Interrupted while waiting for the program.\n" | |
7170 | "Give up waiting? "))) | |
7171 | quit (); | |
7172 | } | |
c906108c SS |
7173 | } |
7174 | ||
6426a772 JM |
7175 | /* Enable/disable target terminal ownership. Most targets can use |
7176 | terminal groups to control terminal ownership. Remote targets are | |
7177 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 7178 | is required. */ |
6426a772 | 7179 | |
f6ac5f3d PA |
7180 | void |
7181 | remote_target::terminal_inferior () | |
6426a772 | 7182 | { |
6426a772 JM |
7183 | /* NOTE: At this point we could also register our selves as the |
7184 | recipient of all input. Any characters typed could then be | |
23860348 | 7185 | passed on down to the target. */ |
6426a772 JM |
7186 | } |
7187 | ||
f6ac5f3d PA |
7188 | void |
7189 | remote_target::terminal_ours () | |
6426a772 | 7190 | { |
6426a772 JM |
7191 | } |
7192 | ||
176a6961 | 7193 | static void |
05be00a8 | 7194 | remote_console_output (const char *msg) |
c906108c | 7195 | { |
05be00a8 | 7196 | const char *p; |
c906108c | 7197 | |
c5aa993b | 7198 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
7199 | { |
7200 | char tb[2]; | |
7201 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 7202 | |
c906108c SS |
7203 | tb[0] = c; |
7204 | tb[1] = 0; | |
da5bd37e | 7205 | gdb_stdtarg->puts (tb); |
c906108c | 7206 | } |
da5bd37e | 7207 | gdb_stdtarg->flush (); |
00db5b94 | 7208 | } |
74531fed | 7209 | |
221e1a37 PA |
7210 | /* Return the length of the stop reply queue. */ |
7211 | ||
6b8edb51 PA |
7212 | int |
7213 | remote_target::stop_reply_queue_length () | |
221e1a37 | 7214 | { |
6b8edb51 | 7215 | remote_state *rs = get_remote_state (); |
953edf2b | 7216 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
7217 | } |
7218 | ||
cb8c24b6 | 7219 | static void |
6b8edb51 | 7220 | remote_notif_stop_parse (remote_target *remote, |
bb277751 | 7221 | struct notif_client *self, const char *buf, |
722247f1 YQ |
7222 | struct notif_event *event) |
7223 | { | |
6b8edb51 | 7224 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
7225 | } |
7226 | ||
7227 | static void | |
6b8edb51 | 7228 | remote_notif_stop_ack (remote_target *remote, |
bb277751 | 7229 | struct notif_client *self, const char *buf, |
722247f1 YQ |
7230 | struct notif_event *event) |
7231 | { | |
7232 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
7233 | ||
7234 | /* acknowledge */ | |
6b8edb51 | 7235 | putpkt (remote, self->ack_command); |
722247f1 | 7236 | |
b0083dd7 PA |
7237 | /* Kind can be TARGET_WAITKIND_IGNORE if we have meanwhile discarded |
7238 | the notification. It was left in the queue because we need to | |
7239 | acknowledge it and pull the rest of the notifications out. */ | |
183be222 | 7240 | if (stop_reply->ws.kind () != TARGET_WAITKIND_IGNORE) |
b0083dd7 | 7241 | remote->push_stop_reply (stop_reply); |
722247f1 YQ |
7242 | } |
7243 | ||
7244 | static int | |
6b8edb51 PA |
7245 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
7246 | struct notif_client *self) | |
722247f1 YQ |
7247 | { |
7248 | /* We can't get pending events in remote_notif_process for | |
7249 | notification stop, and we have to do this in remote_wait_ns | |
7250 | instead. If we fetch all queued events from stub, remote stub | |
7251 | may exit and we have no chance to process them back in | |
7252 | remote_wait_ns. */ | |
6b8edb51 PA |
7253 | remote_state *rs = remote->get_remote_state (); |
7254 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
722247f1 YQ |
7255 | return 0; |
7256 | } | |
7257 | ||
32603266 | 7258 | stop_reply::~stop_reply () |
722247f1 | 7259 | { |
32603266 TT |
7260 | for (cached_reg_t ® : regcache) |
7261 | xfree (reg.data); | |
722247f1 YQ |
7262 | } |
7263 | ||
32603266 TT |
7264 | static notif_event_up |
7265 | remote_notif_stop_alloc_reply () | |
722247f1 | 7266 | { |
32603266 | 7267 | return notif_event_up (new struct stop_reply ()); |
722247f1 YQ |
7268 | } |
7269 | ||
7270 | /* A client of notification Stop. */ | |
7271 | ||
7272 | struct notif_client notif_client_stop = | |
7273 | { | |
7274 | "Stop", | |
7275 | "vStopped", | |
7276 | remote_notif_stop_parse, | |
7277 | remote_notif_stop_ack, | |
7278 | remote_notif_stop_can_get_pending_events, | |
7279 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 7280 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
7281 | }; |
7282 | ||
cbb8991c DB |
7283 | /* If CONTEXT contains any fork child threads that have not been |
7284 | reported yet, remove them from the CONTEXT list. If such a | |
7285 | thread exists it is because we are stopped at a fork catchpoint | |
7286 | and have not yet called follow_fork, which will set up the | |
7287 | host-side data structures for the new process. */ | |
7288 | ||
6b8edb51 PA |
7289 | void |
7290 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c | 7291 | { |
cbb8991c | 7292 | struct notif_client *notif = ¬if_client_stop; |
cbb8991c DB |
7293 | |
7294 | /* For any threads stopped at a fork event, remove the corresponding | |
7295 | fork child threads from the CONTEXT list. */ | |
5b6d1e4f | 7296 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c | 7297 | { |
28561a65 SM |
7298 | const target_waitstatus *ws = thread_pending_fork_status (thread); |
7299 | ||
7300 | if (ws == nullptr) | |
7301 | continue; | |
cbb8991c | 7302 | |
28561a65 | 7303 | context->remove_thread (ws->child_ptid ()); |
cbb8991c DB |
7304 | } |
7305 | ||
7306 | /* Check for any pending fork events (not reported or processed yet) | |
7307 | in process PID and remove those fork child threads from the | |
7308 | CONTEXT list as well. */ | |
7309 | remote_notif_get_pending_events (notif); | |
953edf2b | 7310 | for (auto &event : get_remote_state ()->stop_reply_queue) |
183be222 | 7311 | if (event->ws.kind () == TARGET_WAITKIND_FORKED |
3890f02a | 7312 | || event->ws.kind () == TARGET_WAITKIND_VFORKED) |
183be222 | 7313 | context->remove_thread (event->ws.child_ptid ()); |
3890f02a SM |
7314 | else if (event->ws.kind () == TARGET_WAITKIND_THREAD_EXITED) |
7315 | context->remove_thread (event->ptid); | |
85ad3aaf PA |
7316 | } |
7317 | ||
2f63ec5c AB |
7318 | /* Check whether any event pending in the vStopped queue would prevent a |
7319 | global or process wildcard vCont action. Set *may_global_wildcard to | |
7320 | false if we can't do a global wildcard (vCont;c), and clear the event | |
7321 | inferior's may_wildcard_vcont flag if we can't do a process-wide | |
7322 | wildcard resume (vCont;c:pPID.-1). */ | |
85ad3aaf | 7323 | |
6b8edb51 PA |
7324 | void |
7325 | remote_target::check_pending_events_prevent_wildcard_vcont | |
2f63ec5c | 7326 | (bool *may_global_wildcard) |
85ad3aaf PA |
7327 | { |
7328 | struct notif_client *notif = ¬if_client_stop; | |
7329 | ||
7330 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7331 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7332 | { | |
183be222 SM |
7333 | if (event->ws.kind () == TARGET_WAITKIND_NO_RESUMED |
7334 | || event->ws.kind () == TARGET_WAITKIND_NO_HISTORY) | |
953edf2b | 7335 | continue; |
85ad3aaf | 7336 | |
183be222 SM |
7337 | if (event->ws.kind () == TARGET_WAITKIND_FORKED |
7338 | || event->ws.kind () == TARGET_WAITKIND_VFORKED) | |
2f63ec5c | 7339 | *may_global_wildcard = false; |
722247f1 | 7340 | |
953edf2b TT |
7341 | /* This may be the first time we heard about this process. |
7342 | Regardless, we must not do a global wildcard resume, otherwise | |
7343 | we'd resume this process too. */ | |
2f63ec5c | 7344 | *may_global_wildcard = false; |
323fd5b9 PA |
7345 | if (event->ptid != null_ptid) |
7346 | { | |
7347 | inferior *inf = find_inferior_ptid (this, event->ptid); | |
7348 | if (inf != NULL) | |
7349 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
7350 | } | |
722247f1 | 7351 | } |
722247f1 YQ |
7352 | } |
7353 | ||
f48ff2a7 | 7354 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7355 | |
6b8edb51 PA |
7356 | void |
7357 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7358 | { |
f48ff2a7 YQ |
7359 | struct stop_reply *reply; |
7360 | struct remote_state *rs = get_remote_state (); | |
7361 | struct remote_notif_state *rns = rs->notif_state; | |
7362 | ||
7363 | /* This function can be notified when an inferior exists. When the | |
7364 | target is not remote, the notification state is NULL. */ | |
7365 | if (rs->remote_desc == NULL) | |
7366 | return; | |
7367 | ||
7368 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7369 | |
74531fed | 7370 | /* Discard the in-flight notification. */ |
e99b03dc | 7371 | if (reply != NULL && reply->ptid.pid () == inf->pid) |
74531fed | 7372 | { |
b0083dd7 PA |
7373 | /* Leave the notification pending, since the server expects that |
7374 | we acknowledge it with vStopped. But clear its contents, so | |
7375 | that later on when we acknowledge it, we also discard it. */ | |
df5ad102 SM |
7376 | remote_debug_printf |
7377 | ("discarding in-flight notification: ptid: %s, ws: %s\n", | |
7378 | reply->ptid.to_string().c_str(), | |
7379 | reply->ws.to_string ().c_str ()); | |
183be222 | 7380 | reply->ws.set_ignore (); |
74531fed | 7381 | } |
c906108c | 7382 | |
74531fed PA |
7383 | /* Discard the stop replies we have already pulled with |
7384 | vStopped. */ | |
953edf2b TT |
7385 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7386 | rs->stop_reply_queue.end (), | |
7387 | [=] (const stop_reply_up &event) | |
7388 | { | |
7389 | return event->ptid.pid () == inf->pid; | |
7390 | }); | |
df5ad102 SM |
7391 | for (auto it = iter; it != rs->stop_reply_queue.end (); ++it) |
7392 | remote_debug_printf | |
7393 | ("discarding queued stop reply: ptid: %s, ws: %s\n", | |
7394 | reply->ptid.to_string().c_str(), | |
7395 | reply->ws.to_string ().c_str ()); | |
953edf2b | 7396 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); |
bcc75809 YQ |
7397 | } |
7398 | ||
7399 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7400 | |
6b8edb51 PA |
7401 | void |
7402 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7403 | { |
6b8edb51 | 7404 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7405 | |
f48ff2a7 YQ |
7406 | /* Discard the stop replies we have already pulled with |
7407 | vStopped. */ | |
953edf2b TT |
7408 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7409 | rs->stop_reply_queue.end (), | |
7410 | [=] (const stop_reply_up &event) | |
7411 | { | |
7412 | return event->rs == rs; | |
7413 | }); | |
7414 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7415 | } |
43ff13b4 | 7416 | |
722247f1 YQ |
7417 | /* Remove the first reply in 'stop_reply_queue' which matches |
7418 | PTID. */ | |
2e9f7625 | 7419 | |
6b8edb51 PA |
7420 | struct stop_reply * |
7421 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7422 | { |
953edf2b | 7423 | remote_state *rs = get_remote_state (); |
722247f1 | 7424 | |
953edf2b TT |
7425 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7426 | rs->stop_reply_queue.end (), | |
7427 | [=] (const stop_reply_up &event) | |
7428 | { | |
7429 | return event->ptid.matches (ptid); | |
7430 | }); | |
7431 | struct stop_reply *result; | |
7432 | if (iter == rs->stop_reply_queue.end ()) | |
7433 | result = nullptr; | |
7434 | else | |
7435 | { | |
7436 | result = iter->release (); | |
7437 | rs->stop_reply_queue.erase (iter); | |
7438 | } | |
722247f1 | 7439 | |
722247f1 | 7440 | if (notif_debug) |
6cb06a8c TT |
7441 | gdb_printf (gdb_stdlog, |
7442 | "notif: discard queued event: 'Stop' in %s\n", | |
7443 | ptid.to_string ().c_str ()); | |
a744cf53 | 7444 | |
953edf2b | 7445 | return result; |
74531fed | 7446 | } |
75c99385 | 7447 | |
74531fed PA |
7448 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7449 | remove it from the queue, and return it. Returns NULL if none is | |
7450 | found. If there are still queued events left to process, tell the | |
7451 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7452 | |
6b8edb51 PA |
7453 | struct stop_reply * |
7454 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7455 | { |
953edf2b | 7456 | remote_state *rs = get_remote_state (); |
722247f1 | 7457 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7458 | |
4f626cad | 7459 | if (!rs->stop_reply_queue.empty () && target_can_async_p ()) |
6b8edb51 | 7460 | { |
6b8edb51 PA |
7461 | /* There's still at least an event left. */ |
7462 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
7463 | } | |
74531fed | 7464 | |
722247f1 | 7465 | return r; |
74531fed PA |
7466 | } |
7467 | ||
7468 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7469 | know that we now have at least one queued event left to pass to the | |
7470 | core side, tell the event loop to get back to target_wait soon. */ | |
7471 | ||
6b8edb51 PA |
7472 | void |
7473 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7474 | { |
6b8edb51 | 7475 | remote_state *rs = get_remote_state (); |
953edf2b | 7476 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7477 | |
722247f1 | 7478 | if (notif_debug) |
6cb06a8c TT |
7479 | gdb_printf (gdb_stdlog, |
7480 | "notif: push 'Stop' %s to queue %d\n", | |
7481 | new_event->ptid.to_string ().c_str (), | |
7482 | int (rs->stop_reply_queue.size ())); | |
74531fed | 7483 | |
4f626cad AB |
7484 | /* Mark the pending event queue only if async mode is currently enabled. |
7485 | If async mode is not currently enabled, then, if it later becomes | |
7486 | enabled, and there are events in this queue, we will mark the event | |
7487 | token at that point, see remote_target::async. */ | |
7488 | if (target_is_async_p ()) | |
7489 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
74531fed PA |
7490 | } |
7491 | ||
7492 | /* Returns true if we have a stop reply for PTID. */ | |
7493 | ||
6b8edb51 PA |
7494 | int |
7495 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7496 | { |
6b8edb51 | 7497 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7498 | for (auto &event : rs->stop_reply_queue) |
7499 | if (ptid == event->ptid | |
183be222 | 7500 | && event->ws.kind () == TARGET_WAITKIND_STOPPED) |
953edf2b TT |
7501 | return 1; |
7502 | return 0; | |
74531fed PA |
7503 | } |
7504 | ||
26d56a93 SL |
7505 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7506 | starting with P and ending with PEND matches PREFIX. */ | |
7507 | ||
7508 | static int | |
7509 | strprefix (const char *p, const char *pend, const char *prefix) | |
7510 | { | |
7511 | for ( ; p < pend; p++, prefix++) | |
7512 | if (*p != *prefix) | |
7513 | return 0; | |
7514 | return *prefix == '\0'; | |
7515 | } | |
7516 | ||
74531fed PA |
7517 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7518 | result is stored in EVENT, or throws an error. */ | |
7519 | ||
6b8edb51 | 7520 | void |
bb277751 | 7521 | remote_target::remote_parse_stop_reply (const char *buf, stop_reply *event) |
74531fed | 7522 | { |
5cd63fda | 7523 | remote_arch_state *rsa = NULL; |
74531fed | 7524 | ULONGEST addr; |
256642e8 | 7525 | const char *p; |
94585166 | 7526 | int skipregs = 0; |
74531fed PA |
7527 | |
7528 | event->ptid = null_ptid; | |
bcc75809 | 7529 | event->rs = get_remote_state (); |
183be222 | 7530 | event->ws.set_ignore (); |
f7e6eed5 | 7531 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
32603266 | 7532 | event->regcache.clear (); |
dc146f7c | 7533 | event->core = -1; |
74531fed PA |
7534 | |
7535 | switch (buf[0]) | |
7536 | { | |
7537 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7538 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7539 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7540 | ss = signal number | |
7541 | n... = register number | |
7542 | r... = register contents | |
7543 | */ | |
7544 | ||
7545 | p = &buf[3]; /* after Txx */ | |
7546 | while (*p) | |
7547 | { | |
256642e8 | 7548 | const char *p1; |
cea39f65 | 7549 | int fieldsize; |
43ff13b4 | 7550 | |
1f10ba14 PA |
7551 | p1 = strchr (p, ':'); |
7552 | if (p1 == NULL) | |
7553 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7554 | Packet: '%s'\n"), | |
7555 | p, buf); | |
7556 | if (p == p1) | |
7557 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7558 | Packet: '%s'\n"), | |
7559 | p, buf); | |
3c3bea1c | 7560 | |
1f10ba14 PA |
7561 | /* Some "registers" are actually extended stop information. |
7562 | Note if you're adding a new entry here: GDB 7.9 and | |
7563 | earlier assume that all register "numbers" that start | |
7564 | with an hex digit are real register numbers. Make sure | |
7565 | the server only sends such a packet if it knows the | |
7566 | client understands it. */ | |
c8e38a49 | 7567 | |
26d56a93 | 7568 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7569 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7570 | else if (strprefix (p, p1, "syscall_entry")) |
7571 | { | |
7572 | ULONGEST sysno; | |
7573 | ||
82075af2 | 7574 | p = unpack_varlen_hex (++p1, &sysno); |
183be222 | 7575 | event->ws.set_syscall_entry ((int) sysno); |
82075af2 JS |
7576 | } |
7577 | else if (strprefix (p, p1, "syscall_return")) | |
7578 | { | |
7579 | ULONGEST sysno; | |
7580 | ||
82075af2 | 7581 | p = unpack_varlen_hex (++p1, &sysno); |
183be222 | 7582 | event->ws.set_syscall_return ((int) sysno); |
82075af2 | 7583 | } |
26d56a93 SL |
7584 | else if (strprefix (p, p1, "watch") |
7585 | || strprefix (p, p1, "rwatch") | |
7586 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7587 | { |
f7e6eed5 | 7588 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7589 | p = unpack_varlen_hex (++p1, &addr); |
7590 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7591 | } |
26d56a93 | 7592 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7593 | { |
7594 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7595 | ||
7596 | /* Make sure the stub doesn't forget to indicate support | |
7597 | with qSupported. */ | |
7598 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7599 | error (_("Unexpected swbreak stop reason")); | |
7600 | ||
7601 | /* The value part is documented as "must be empty", | |
7602 | though we ignore it, in case we ever decide to make | |
7603 | use of it in a backward compatible way. */ | |
8424cc97 | 7604 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7605 | } |
26d56a93 | 7606 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7607 | { |
7608 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7609 | ||
7610 | /* Make sure the stub doesn't forget to indicate support | |
7611 | with qSupported. */ | |
7612 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7613 | error (_("Unexpected hwbreak stop reason")); | |
7614 | ||
7615 | /* See above. */ | |
8424cc97 | 7616 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7617 | } |
26d56a93 | 7618 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7619 | { |
183be222 | 7620 | event->ws.set_loaded (); |
8424cc97 | 7621 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7622 | } |
26d56a93 | 7623 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 | 7624 | { |
183be222 | 7625 | event->ws.set_no_history (); |
1f10ba14 PA |
7626 | /* p1 will indicate "begin" or "end", but it makes |
7627 | no difference for now, so ignore it. */ | |
8424cc97 | 7628 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7629 | } |
26d56a93 | 7630 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7631 | { |
7632 | ULONGEST c; | |
a744cf53 | 7633 | |
1f10ba14 PA |
7634 | p = unpack_varlen_hex (++p1, &c); |
7635 | event->core = c; | |
cea39f65 | 7636 | } |
26d56a93 | 7637 | else if (strprefix (p, p1, "fork")) |
183be222 | 7638 | event->ws.set_forked (read_ptid (++p1, &p)); |
26d56a93 | 7639 | else if (strprefix (p, p1, "vfork")) |
183be222 | 7640 | event->ws.set_vforked (read_ptid (++p1, &p)); |
26d56a93 | 7641 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb | 7642 | { |
183be222 | 7643 | event->ws.set_vfork_done (); |
8424cc97 | 7644 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7645 | } |
6ab24463 | 7646 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7647 | { |
7648 | ULONGEST ignored; | |
94585166 DB |
7649 | int pathlen; |
7650 | ||
7651 | /* Determine the length of the execd pathname. */ | |
7652 | p = unpack_varlen_hex (++p1, &ignored); | |
7653 | pathlen = (p - p1) / 2; | |
7654 | ||
7655 | /* Save the pathname for event reporting and for | |
7656 | the next run command. */ | |
183be222 | 7657 | gdb::unique_xmalloc_ptr<char> pathname |
c6321f19 TT |
7658 | ((char *) xmalloc (pathlen + 1)); |
7659 | hex2bin (p1, (gdb_byte *) pathname.get (), pathlen); | |
183be222 | 7660 | pathname.get ()[pathlen] = '\0'; |
94585166 DB |
7661 | |
7662 | /* This is freed during event handling. */ | |
183be222 | 7663 | event->ws.set_execd (std::move (pathname)); |
94585166 DB |
7664 | |
7665 | /* Skip the registers included in this packet, since | |
7666 | they may be for an architecture different from the | |
7667 | one used by the original program. */ | |
7668 | skipregs = 1; | |
7669 | } | |
65706a29 PA |
7670 | else if (strprefix (p, p1, "create")) |
7671 | { | |
183be222 | 7672 | event->ws.set_thread_created (); |
8424cc97 | 7673 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7674 | } |
cea39f65 MS |
7675 | else |
7676 | { | |
1f10ba14 | 7677 | ULONGEST pnum; |
256642e8 | 7678 | const char *p_temp; |
1f10ba14 | 7679 | |
94585166 DB |
7680 | if (skipregs) |
7681 | { | |
8424cc97 | 7682 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7683 | p++; |
7684 | continue; | |
7685 | } | |
7686 | ||
1f10ba14 PA |
7687 | /* Maybe a real ``P'' register number. */ |
7688 | p_temp = unpack_varlen_hex (p, &pnum); | |
7689 | /* If the first invalid character is the colon, we got a | |
7690 | register number. Otherwise, it's an unknown stop | |
7691 | reason. */ | |
7692 | if (p_temp == p1) | |
7693 | { | |
5cd63fda PA |
7694 | /* If we haven't parsed the event's thread yet, find |
7695 | it now, in order to find the architecture of the | |
7696 | reported expedited registers. */ | |
7697 | if (event->ptid == null_ptid) | |
7698 | { | |
24ed6739 AB |
7699 | /* If there is no thread-id information then leave |
7700 | the event->ptid as null_ptid. Later in | |
7701 | process_stop_reply we will pick a suitable | |
7702 | thread. */ | |
5cd63fda PA |
7703 | const char *thr = strstr (p1 + 1, ";thread:"); |
7704 | if (thr != NULL) | |
7705 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7706 | NULL); | |
5cd63fda PA |
7707 | } |
7708 | ||
7709 | if (rsa == NULL) | |
7710 | { | |
5b6d1e4f PA |
7711 | inferior *inf |
7712 | = (event->ptid == null_ptid | |
7713 | ? NULL | |
7714 | : find_inferior_ptid (this, event->ptid)); | |
5cd63fda PA |
7715 | /* If this is the first time we learn anything |
7716 | about this process, skip the registers | |
7717 | included in this packet, since we don't yet | |
7718 | know which architecture to use to parse them. | |
7719 | We'll determine the architecture later when | |
7720 | we process the stop reply and retrieve the | |
7721 | target description, via | |
7722 | remote_notice_new_inferior -> | |
7723 | post_create_inferior. */ | |
7724 | if (inf == NULL) | |
7725 | { | |
7726 | p = strchrnul (p1 + 1, ';'); | |
7727 | p++; | |
7728 | continue; | |
7729 | } | |
7730 | ||
7731 | event->arch = inf->gdbarch; | |
9d6eea31 | 7732 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7733 | } |
7734 | ||
7735 | packet_reg *reg | |
7736 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7737 | cached_reg_t cached_reg; |
43ff13b4 | 7738 | |
1f10ba14 PA |
7739 | if (reg == NULL) |
7740 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7741 | Packet: '%s'\n"), |
1f10ba14 | 7742 | hex_string (pnum), p, buf); |
c8e38a49 | 7743 | |
1f10ba14 | 7744 | cached_reg.num = reg->regnum; |
d1dff226 | 7745 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7746 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7747 | |
1f10ba14 PA |
7748 | p = p1 + 1; |
7749 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7750 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7751 | p += 2 * fieldsize; |
5cd63fda | 7752 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7753 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7754 | |
32603266 | 7755 | event->regcache.push_back (cached_reg); |
1f10ba14 PA |
7756 | } |
7757 | else | |
7758 | { | |
7759 | /* Not a number. Silently skip unknown optional | |
7760 | info. */ | |
8424cc97 | 7761 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7762 | } |
cea39f65 | 7763 | } |
c8e38a49 | 7764 | |
cea39f65 MS |
7765 | if (*p != ';') |
7766 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7767 | buf, p); | |
7768 | ++p; | |
7769 | } | |
5b5596ff | 7770 | |
183be222 | 7771 | if (event->ws.kind () != TARGET_WAITKIND_IGNORE) |
5b5596ff PA |
7772 | break; |
7773 | ||
c8e38a49 PA |
7774 | /* fall through */ |
7775 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7776 | { |
7777 | int sig; | |
7778 | ||
3a09da41 PA |
7779 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); |
7780 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
183be222 | 7781 | event->ws.set_stopped ((enum gdb_signal) sig); |
3a09da41 | 7782 | else |
183be222 | 7783 | event->ws.set_stopped (GDB_SIGNAL_UNKNOWN); |
3a09da41 | 7784 | } |
c8e38a49 | 7785 | break; |
65706a29 PA |
7786 | case 'w': /* Thread exited. */ |
7787 | { | |
65706a29 PA |
7788 | ULONGEST value; |
7789 | ||
65706a29 | 7790 | p = unpack_varlen_hex (&buf[1], &value); |
183be222 | 7791 | event->ws.set_thread_exited (value); |
65706a29 PA |
7792 | if (*p != ';') |
7793 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7794 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7795 | break; |
7796 | } | |
c8e38a49 PA |
7797 | case 'W': /* Target exited. */ |
7798 | case 'X': | |
7799 | { | |
c8e38a49 | 7800 | ULONGEST value; |
82f73884 | 7801 | |
c8e38a49 PA |
7802 | /* GDB used to accept only 2 hex chars here. Stubs should |
7803 | only send more if they detect GDB supports multi-process | |
7804 | support. */ | |
7805 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7806 | |
c8e38a49 PA |
7807 | if (buf[0] == 'W') |
7808 | { | |
7809 | /* The remote process exited. */ | |
183be222 | 7810 | event->ws.set_exited (value); |
c8e38a49 PA |
7811 | } |
7812 | else | |
7813 | { | |
7814 | /* The remote process exited with a signal. */ | |
3a09da41 | 7815 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
183be222 | 7816 | event->ws.set_signalled ((enum gdb_signal) value); |
3a09da41 | 7817 | else |
183be222 | 7818 | event->ws.set_signalled (GDB_SIGNAL_UNKNOWN); |
c8e38a49 | 7819 | } |
82f73884 | 7820 | |
e7af6c70 TBA |
7821 | /* If no process is specified, return null_ptid, and let the |
7822 | caller figure out the right process to use. */ | |
7823 | int pid = 0; | |
c8e38a49 PA |
7824 | if (*p == '\0') |
7825 | ; | |
7826 | else if (*p == ';') | |
7827 | { | |
7828 | p++; | |
7829 | ||
0b24eb2d | 7830 | if (*p == '\0') |
82f73884 | 7831 | ; |
61012eef | 7832 | else if (startswith (p, "process:")) |
82f73884 | 7833 | { |
c8e38a49 | 7834 | ULONGEST upid; |
a744cf53 | 7835 | |
c8e38a49 PA |
7836 | p += sizeof ("process:") - 1; |
7837 | unpack_varlen_hex (p, &upid); | |
7838 | pid = upid; | |
82f73884 PA |
7839 | } |
7840 | else | |
7841 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7842 | } |
c8e38a49 PA |
7843 | else |
7844 | error (_("unknown stop reply packet: %s"), buf); | |
f2907e49 | 7845 | event->ptid = ptid_t (pid); |
74531fed PA |
7846 | } |
7847 | break; | |
f2faf941 | 7848 | case 'N': |
183be222 | 7849 | event->ws.set_no_resumed (); |
f2faf941 PA |
7850 | event->ptid = minus_one_ptid; |
7851 | break; | |
74531fed | 7852 | } |
74531fed PA |
7853 | } |
7854 | ||
722247f1 YQ |
7855 | /* When the stub wants to tell GDB about a new notification reply, it |
7856 | sends a notification (%Stop, for example). Those can come it at | |
7857 | any time, hence, we have to make sure that any pending | |
7858 | putpkt/getpkt sequence we're making is finished, before querying | |
7859 | the stub for more events with the corresponding ack command | |
7860 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7861 | immediately upon receiving the notification, something like this | |
7862 | could happen: | |
74531fed PA |
7863 | |
7864 | 1.1) --> Hg 1 | |
7865 | 1.2) <-- OK | |
7866 | 1.3) --> g | |
7867 | 1.4) <-- %Stop | |
7868 | 1.5) --> vStopped | |
7869 | 1.6) <-- (registers reply to step #1.3) | |
7870 | ||
7871 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7872 | query. | |
7873 | ||
796cb314 | 7874 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7875 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7876 | doing whatever we were doing: | |
7877 | ||
7878 | 2.1) --> Hg 1 | |
7879 | 2.2) <-- OK | |
7880 | 2.3) --> g | |
7881 | 2.4) <-- %Stop | |
7882 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7883 | 2.5) <-- (registers reply to step #2.3) | |
7884 | ||
85102364 | 7885 | Eventually after step #2.5, we return to the event loop, which |
74531fed PA |
7886 | notices there's an event on the |
7887 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7888 | associated callback --- the function below. At this point, we're | |
7889 | always safe to start a vStopped sequence. : | |
7890 | ||
7891 | 2.6) --> vStopped | |
7892 | 2.7) <-- T05 thread:2 | |
7893 | 2.8) --> vStopped | |
7894 | 2.9) --> OK | |
7895 | */ | |
7896 | ||
722247f1 | 7897 | void |
6b8edb51 | 7898 | remote_target::remote_notif_get_pending_events (notif_client *nc) |
74531fed PA |
7899 | { |
7900 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7901 | |
f48ff2a7 | 7902 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7903 | { |
722247f1 | 7904 | if (notif_debug) |
6cb06a8c TT |
7905 | gdb_printf (gdb_stdlog, |
7906 | "notif: process: '%s' ack pending event\n", | |
7907 | nc->name); | |
74531fed | 7908 | |
722247f1 | 7909 | /* acknowledge */ |
8d64371b TT |
7910 | nc->ack (this, nc, rs->buf.data (), |
7911 | rs->notif_state->pending_event[nc->id]); | |
f48ff2a7 | 7912 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
7913 | |
7914 | while (1) | |
7915 | { | |
8d64371b TT |
7916 | getpkt (&rs->buf, 0); |
7917 | if (strcmp (rs->buf.data (), "OK") == 0) | |
74531fed PA |
7918 | break; |
7919 | else | |
8d64371b | 7920 | remote_notif_ack (this, nc, rs->buf.data ()); |
74531fed PA |
7921 | } |
7922 | } | |
722247f1 YQ |
7923 | else |
7924 | { | |
7925 | if (notif_debug) | |
6cb06a8c TT |
7926 | gdb_printf (gdb_stdlog, |
7927 | "notif: process: '%s' no pending reply\n", | |
7928 | nc->name); | |
722247f1 | 7929 | } |
74531fed PA |
7930 | } |
7931 | ||
6b8edb51 PA |
7932 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
7933 | avoid having to export the whole remote_target class. */ | |
7934 | ||
7935 | void | |
7936 | remote_notif_get_pending_events (remote_target *remote, notif_client *nc) | |
7937 | { | |
7938 | remote->remote_notif_get_pending_events (nc); | |
7939 | } | |
7940 | ||
8f66807b AB |
7941 | /* Called from process_stop_reply when the stop packet we are responding |
7942 | to didn't include a process-id or thread-id. STATUS is the stop event | |
7943 | we are responding to. | |
7944 | ||
7945 | It is the task of this function to select a suitable thread (or process) | |
7946 | and return its ptid, this is the thread (or process) we will assume the | |
7947 | stop event came from. | |
7948 | ||
7949 | In some cases there isn't really any choice about which thread (or | |
7950 | process) is selected, a basic remote with a single process containing a | |
7951 | single thread might choose not to send any process-id or thread-id in | |
7952 | its stop packets, this function will select and return the one and only | |
7953 | thread. | |
7954 | ||
7955 | However, if a target supports multiple threads (or processes) and still | |
7956 | doesn't include a thread-id (or process-id) in its stop packet then | |
7957 | first, this is a badly behaving target, and second, we're going to have | |
7958 | to select a thread (or process) at random and use that. This function | |
7959 | will print a warning to the user if it detects that there is the | |
7960 | possibility that GDB is guessing which thread (or process) to | |
7961 | report. | |
7962 | ||
7963 | Note that this is called before GDB fetches the updated thread list from the | |
7964 | target. So it's possible for the stop reply to be ambiguous and for GDB to | |
7965 | not realize it. For example, if there's initially one thread, the target | |
7966 | spawns a second thread, and then sends a stop reply without an id that | |
7967 | concerns the first thread. GDB will assume the stop reply is about the | |
7968 | first thread - the only thread it knows about - without printing a warning. | |
7969 | Anyway, if the remote meant for the stop reply to be about the second thread, | |
7970 | then it would be really broken, because GDB doesn't know about that thread | |
7971 | yet. */ | |
74531fed | 7972 | |
6b8edb51 | 7973 | ptid_t |
8f66807b | 7974 | remote_target::select_thread_for_ambiguous_stop_reply |
c272a98c | 7975 | (const target_waitstatus &status) |
74531fed | 7976 | { |
4351271e AB |
7977 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
7978 | ||
8f66807b AB |
7979 | /* Some stop events apply to all threads in an inferior, while others |
7980 | only apply to a single thread. */ | |
7981 | bool process_wide_stop | |
c272a98c SM |
7982 | = (status.kind () == TARGET_WAITKIND_EXITED |
7983 | || status.kind () == TARGET_WAITKIND_SIGNALLED); | |
74531fed | 7984 | |
4351271e AB |
7985 | remote_debug_printf ("process_wide_stop = %d", process_wide_stop); |
7986 | ||
8f66807b AB |
7987 | thread_info *first_resumed_thread = nullptr; |
7988 | bool ambiguous = false; | |
74531fed | 7989 | |
8f66807b AB |
7990 | /* Consider all non-exited threads of the target, find the first resumed |
7991 | one. */ | |
7992 | for (thread_info *thr : all_non_exited_threads (this)) | |
24ed6739 | 7993 | { |
8f66807b | 7994 | remote_thread_info *remote_thr = get_remote_thread_info (thr); |
cada5fc9 | 7995 | |
a6c11cbb | 7996 | if (remote_thr->get_resume_state () != resume_state::RESUMED) |
8f66807b | 7997 | continue; |
24ed6739 | 7998 | |
8f66807b AB |
7999 | if (first_resumed_thread == nullptr) |
8000 | first_resumed_thread = thr; | |
8001 | else if (!process_wide_stop | |
8002 | || first_resumed_thread->ptid.pid () != thr->ptid.pid ()) | |
8003 | ambiguous = true; | |
8004 | } | |
8005 | ||
b622494e AB |
8006 | gdb_assert (first_resumed_thread != nullptr); |
8007 | ||
4351271e AB |
8008 | remote_debug_printf ("first resumed thread is %s", |
8009 | pid_to_str (first_resumed_thread->ptid).c_str ()); | |
8010 | remote_debug_printf ("is this guess ambiguous? = %d", ambiguous); | |
8011 | ||
8f66807b AB |
8012 | /* Warn if the remote target is sending ambiguous stop replies. */ |
8013 | if (ambiguous) | |
8014 | { | |
8015 | static bool warned = false; | |
8016 | ||
8017 | if (!warned) | |
8018 | { | |
8019 | /* If you are seeing this warning then the remote target has | |
8020 | stopped without specifying a thread-id, but the target | |
8021 | does have multiple threads (or inferiors), and so GDB is | |
8022 | having to guess which thread stopped. | |
8023 | ||
8024 | Examples of what might cause this are the target sending | |
8025 | and 'S' stop packet, or a 'T' stop packet and not | |
8026 | including a thread-id. | |
8027 | ||
8028 | Additionally, the target might send a 'W' or 'X packet | |
8029 | without including a process-id, when the target has | |
8030 | multiple running inferiors. */ | |
8031 | if (process_wide_stop) | |
8032 | warning (_("multi-inferior target stopped without " | |
8033 | "sending a process-id, using first " | |
8034 | "non-exited inferior")); | |
cada5fc9 | 8035 | else |
8f66807b AB |
8036 | warning (_("multi-threaded target stopped without " |
8037 | "sending a thread-id, using first " | |
8038 | "non-exited thread")); | |
8039 | warned = true; | |
24ed6739 | 8040 | } |
24ed6739 | 8041 | } |
74531fed | 8042 | |
8f66807b AB |
8043 | /* If this is a stop for all threads then don't use a particular threads |
8044 | ptid, instead create a new ptid where only the pid field is set. */ | |
8045 | if (process_wide_stop) | |
8046 | return ptid_t (first_resumed_thread->ptid.pid ()); | |
8047 | else | |
8048 | return first_resumed_thread->ptid; | |
8049 | } | |
8050 | ||
8051 | /* Called when it is decided that STOP_REPLY holds the info of the | |
8052 | event that is to be returned to the core. This function always | |
8053 | destroys STOP_REPLY. */ | |
8054 | ||
8055 | ptid_t | |
8056 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
8057 | struct target_waitstatus *status) | |
8058 | { | |
8059 | *status = stop_reply->ws; | |
8060 | ptid_t ptid = stop_reply->ptid; | |
8061 | ||
8062 | /* If no thread/process was reported by the stub then select a suitable | |
8063 | thread/process. */ | |
8064 | if (ptid == null_ptid) | |
c272a98c | 8065 | ptid = select_thread_for_ambiguous_stop_reply (*status); |
8f66807b AB |
8066 | gdb_assert (ptid != null_ptid); |
8067 | ||
183be222 SM |
8068 | if (status->kind () != TARGET_WAITKIND_EXITED |
8069 | && status->kind () != TARGET_WAITKIND_SIGNALLED | |
8070 | && status->kind () != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 8071 | { |
5f3563ea | 8072 | /* Expedited registers. */ |
32603266 | 8073 | if (!stop_reply->regcache.empty ()) |
5f3563ea | 8074 | { |
217f1f79 | 8075 | struct regcache *regcache |
5b6d1e4f | 8076 | = get_thread_arch_regcache (this, ptid, stop_reply->arch); |
5f3563ea | 8077 | |
32603266 TT |
8078 | for (cached_reg_t ® : stop_reply->regcache) |
8079 | { | |
8080 | regcache->raw_supply (reg.num, reg.data); | |
8081 | xfree (reg.data); | |
8082 | } | |
d1dff226 | 8083 | |
32603266 | 8084 | stop_reply->regcache.clear (); |
5f3563ea | 8085 | } |
74531fed | 8086 | |
8a82de58 | 8087 | remote_notice_new_inferior (ptid, false); |
5b6d1e4f | 8088 | remote_thread_info *remote_thr = get_remote_thread_info (this, ptid); |
799a2abe PA |
8089 | remote_thr->core = stop_reply->core; |
8090 | remote_thr->stop_reason = stop_reply->stop_reason; | |
8091 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
c9d22089 SM |
8092 | |
8093 | if (target_is_non_stop_p ()) | |
8094 | { | |
8095 | /* If the target works in non-stop mode, a stop-reply indicates that | |
8096 | only this thread stopped. */ | |
8097 | remote_thr->set_not_resumed (); | |
8098 | } | |
8099 | else | |
8100 | { | |
8101 | /* If the target works in all-stop mode, a stop-reply indicates that | |
8102 | all the target's threads stopped. */ | |
8103 | for (thread_info *tp : all_non_exited_threads (this)) | |
8104 | get_remote_thread_info (tp)->set_not_resumed (); | |
8105 | } | |
74531fed PA |
8106 | } |
8107 | ||
32603266 | 8108 | delete stop_reply; |
74531fed PA |
8109 | return ptid; |
8110 | } | |
8111 | ||
8112 | /* The non-stop mode version of target_wait. */ | |
8113 | ||
6b8edb51 | 8114 | ptid_t |
b60cea74 TT |
8115 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, |
8116 | target_wait_flags options) | |
74531fed PA |
8117 | { |
8118 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
8119 | struct stop_reply *stop_reply; |
8120 | int ret; | |
fee9eda9 | 8121 | int is_notif = 0; |
74531fed PA |
8122 | |
8123 | /* If in non-stop mode, get out of getpkt even if a | |
8124 | notification is received. */ | |
8125 | ||
8d64371b | 8126 | ret = getpkt_or_notif_sane (&rs->buf, 0 /* forever */, &is_notif); |
74531fed PA |
8127 | while (1) |
8128 | { | |
fee9eda9 | 8129 | if (ret != -1 && !is_notif) |
74531fed PA |
8130 | switch (rs->buf[0]) |
8131 | { | |
8132 | case 'E': /* Error of some sort. */ | |
8133 | /* We're out of sync with the target now. Did it continue | |
8134 | or not? We can't tell which thread it was in non-stop, | |
8135 | so just ignore this. */ | |
8d64371b | 8136 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
74531fed PA |
8137 | break; |
8138 | case 'O': /* Console output. */ | |
8d64371b | 8139 | remote_console_output (&rs->buf[1]); |
74531fed PA |
8140 | break; |
8141 | default: | |
8d64371b | 8142 | warning (_("Invalid remote reply: %s"), rs->buf.data ()); |
74531fed PA |
8143 | break; |
8144 | } | |
8145 | ||
8146 | /* Acknowledge a pending stop reply that may have arrived in the | |
8147 | mean time. */ | |
f48ff2a7 | 8148 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 8149 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
8150 | |
8151 | /* If indeed we noticed a stop reply, we're done. */ | |
8152 | stop_reply = queued_stop_reply (ptid); | |
8153 | if (stop_reply != NULL) | |
8154 | return process_stop_reply (stop_reply, status); | |
8155 | ||
47608cb1 | 8156 | /* Still no event. If we're just polling for an event, then |
74531fed | 8157 | return to the event loop. */ |
47608cb1 | 8158 | if (options & TARGET_WNOHANG) |
74531fed | 8159 | { |
183be222 | 8160 | status->set_ignore (); |
74531fed PA |
8161 | return minus_one_ptid; |
8162 | } | |
8163 | ||
47608cb1 | 8164 | /* Otherwise do a blocking wait. */ |
8d64371b | 8165 | ret = getpkt_or_notif_sane (&rs->buf, 1 /* forever */, &is_notif); |
74531fed PA |
8166 | } |
8167 | } | |
8168 | ||
31ba933e PA |
8169 | /* Return the first resumed thread. */ |
8170 | ||
8171 | static ptid_t | |
5b6d1e4f | 8172 | first_remote_resumed_thread (remote_target *target) |
31ba933e | 8173 | { |
5b6d1e4f | 8174 | for (thread_info *tp : all_non_exited_threads (target, minus_one_ptid)) |
7846f3aa | 8175 | if (tp->resumed ()) |
31ba933e PA |
8176 | return tp->ptid; |
8177 | return null_ptid; | |
8178 | } | |
8179 | ||
74531fed PA |
8180 | /* Wait until the remote machine stops, then return, storing status in |
8181 | STATUS just as `wait' would. */ | |
8182 | ||
6b8edb51 | 8183 | ptid_t |
b60cea74 TT |
8184 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, |
8185 | target_wait_flags options) | |
74531fed PA |
8186 | { |
8187 | struct remote_state *rs = get_remote_state (); | |
74531fed | 8188 | ptid_t event_ptid = null_ptid; |
cea39f65 | 8189 | char *buf; |
74531fed PA |
8190 | struct stop_reply *stop_reply; |
8191 | ||
47608cb1 PA |
8192 | again: |
8193 | ||
183be222 | 8194 | status->set_ignore (); |
74531fed PA |
8195 | |
8196 | stop_reply = queued_stop_reply (ptid); | |
8197 | if (stop_reply != NULL) | |
4f626cad AB |
8198 | { |
8199 | /* None of the paths that push a stop reply onto the queue should | |
8200 | have set the waiting_for_stop_reply flag. */ | |
8201 | gdb_assert (!rs->waiting_for_stop_reply); | |
8202 | event_ptid = process_stop_reply (stop_reply, status); | |
8203 | } | |
74531fed PA |
8204 | else |
8205 | { | |
567420d1 | 8206 | int forever = ((options & TARGET_WNOHANG) == 0 |
6b8edb51 | 8207 | && rs->wait_forever_enabled_p); |
567420d1 PA |
8208 | |
8209 | if (!rs->waiting_for_stop_reply) | |
8210 | { | |
183be222 | 8211 | status->set_no_resumed (); |
567420d1 PA |
8212 | return minus_one_ptid; |
8213 | } | |
74531fed | 8214 | |
74531fed PA |
8215 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
8216 | _never_ wait for ever -> test on target_is_async_p(). | |
8217 | However, before we do that we need to ensure that the caller | |
8218 | knows how to take the target into/out of async mode. */ | |
4f626cad AB |
8219 | int is_notif; |
8220 | int ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif); | |
722247f1 YQ |
8221 | |
8222 | /* GDB gets a notification. Return to core as this event is | |
8223 | not interesting. */ | |
8224 | if (ret != -1 && is_notif) | |
8225 | return minus_one_ptid; | |
567420d1 PA |
8226 | |
8227 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
8228 | return minus_one_ptid; | |
74531fed | 8229 | |
4f626cad | 8230 | buf = rs->buf.data (); |
74531fed | 8231 | |
4f626cad AB |
8232 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
8233 | an 'F' or 'O' packet. */ | |
8234 | if (buf[0] != 'F' && buf[0] != 'O') | |
8235 | rs->ctrlc_pending_p = 0; | |
3a29589a | 8236 | |
4f626cad AB |
8237 | switch (buf[0]) |
8238 | { | |
8239 | case 'E': /* Error of some sort. */ | |
8240 | /* We're out of sync with the target now. Did it continue or | |
8241 | not? Not is more likely, so report a stop. */ | |
8242 | rs->waiting_for_stop_reply = 0; | |
29090fb6 | 8243 | |
4f626cad AB |
8244 | warning (_("Remote failure reply: %s"), buf); |
8245 | status->set_stopped (GDB_SIGNAL_0); | |
8246 | break; | |
8247 | case 'F': /* File-I/O request. */ | |
8248 | /* GDB may access the inferior memory while handling the File-I/O | |
8249 | request, but we don't want GDB accessing memory while waiting | |
8250 | for a stop reply. See the comments in putpkt_binary. Set | |
8251 | waiting_for_stop_reply to 0 temporarily. */ | |
8252 | rs->waiting_for_stop_reply = 0; | |
8253 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); | |
8254 | rs->ctrlc_pending_p = 0; | |
8255 | /* GDB handled the File-I/O request, and the target is running | |
8256 | again. Keep waiting for events. */ | |
8257 | rs->waiting_for_stop_reply = 1; | |
8258 | break; | |
8259 | case 'N': case 'T': case 'S': case 'X': case 'W': | |
8260 | { | |
8261 | /* There is a stop reply to handle. */ | |
8262 | rs->waiting_for_stop_reply = 0; | |
29090fb6 | 8263 | |
4f626cad AB |
8264 | stop_reply |
8265 | = (struct stop_reply *) remote_notif_parse (this, | |
8266 | ¬if_client_stop, | |
8267 | rs->buf.data ()); | |
74531fed | 8268 | |
4f626cad AB |
8269 | event_ptid = process_stop_reply (stop_reply, status); |
8270 | break; | |
8271 | } | |
8272 | case 'O': /* Console output. */ | |
8273 | remote_console_output (buf + 1); | |
8274 | break; | |
8275 | case '\0': | |
8276 | if (rs->last_sent_signal != GDB_SIGNAL_0) | |
8277 | { | |
8278 | /* Zero length reply means that we tried 'S' or 'C' and the | |
8279 | remote system doesn't support it. */ | |
8280 | target_terminal::ours_for_output (); | |
6cb06a8c | 8281 | gdb_printf |
4f626cad AB |
8282 | ("Can't send signals to this remote system. %s not sent.\n", |
8283 | gdb_signal_to_name (rs->last_sent_signal)); | |
8284 | rs->last_sent_signal = GDB_SIGNAL_0; | |
8285 | target_terminal::inferior (); | |
8286 | ||
8287 | strcpy (buf, rs->last_sent_step ? "s" : "c"); | |
8288 | putpkt (buf); | |
8289 | break; | |
8290 | } | |
8291 | /* fallthrough */ | |
8292 | default: | |
8293 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 8294 | break; |
43ff13b4 JM |
8295 | } |
8296 | } | |
c8e38a49 | 8297 | |
183be222 | 8298 | if (status->kind () == TARGET_WAITKIND_NO_RESUMED) |
f2faf941 | 8299 | return minus_one_ptid; |
183be222 | 8300 | else if (status->kind () == TARGET_WAITKIND_IGNORE) |
47608cb1 PA |
8301 | { |
8302 | /* Nothing interesting happened. If we're doing a non-blocking | |
8303 | poll, we're done. Otherwise, go back to waiting. */ | |
8304 | if (options & TARGET_WNOHANG) | |
8305 | return minus_one_ptid; | |
8306 | else | |
8307 | goto again; | |
8308 | } | |
183be222 SM |
8309 | else if (status->kind () != TARGET_WAITKIND_EXITED |
8310 | && status->kind () != TARGET_WAITKIND_SIGNALLED) | |
82f73884 | 8311 | { |
d7e15655 | 8312 | if (event_ptid != null_ptid) |
47f8a51d | 8313 | record_currthread (rs, event_ptid); |
82f73884 | 8314 | else |
5b6d1e4f | 8315 | event_ptid = first_remote_resumed_thread (this); |
43ff13b4 | 8316 | } |
74531fed | 8317 | else |
e7af6c70 TBA |
8318 | { |
8319 | /* A process exit. Invalidate our notion of current thread. */ | |
8320 | record_currthread (rs, minus_one_ptid); | |
8321 | /* It's possible that the packet did not include a pid. */ | |
8322 | if (event_ptid == null_ptid) | |
5b6d1e4f | 8323 | event_ptid = first_remote_resumed_thread (this); |
e7af6c70 TBA |
8324 | /* EVENT_PTID could still be NULL_PTID. Double-check. */ |
8325 | if (event_ptid == null_ptid) | |
8326 | event_ptid = magic_null_ptid; | |
8327 | } | |
79d7f229 | 8328 | |
82f73884 | 8329 | return event_ptid; |
43ff13b4 JM |
8330 | } |
8331 | ||
74531fed PA |
8332 | /* Wait until the remote machine stops, then return, storing status in |
8333 | STATUS just as `wait' would. */ | |
8334 | ||
f6ac5f3d | 8335 | ptid_t |
b60cea74 TT |
8336 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, |
8337 | target_wait_flags options) | |
c8e38a49 | 8338 | { |
2189c312 SM |
8339 | REMOTE_SCOPED_DEBUG_ENTER_EXIT; |
8340 | ||
baa8575b SM |
8341 | remote_state *rs = get_remote_state (); |
8342 | ||
8343 | /* Start by clearing the flag that asks for our wait method to be called, | |
8d34471f AB |
8344 | we'll mark it again at the end if needed. If the target is not in |
8345 | async mode then the async token should not be marked. */ | |
baa8575b SM |
8346 | if (target_is_async_p ()) |
8347 | clear_async_event_handler (rs->remote_async_inferior_event_token); | |
8d34471f AB |
8348 | else |
8349 | gdb_assert (!async_event_handler_marked | |
8350 | (rs->remote_async_inferior_event_token)); | |
baa8575b | 8351 | |
c8e38a49 PA |
8352 | ptid_t event_ptid; |
8353 | ||
6efcd9a8 | 8354 | if (target_is_non_stop_p ()) |
6b8edb51 | 8355 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 8356 | else |
6b8edb51 | 8357 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 8358 | |
d9d41e78 | 8359 | if (target_is_async_p ()) |
c8e38a49 | 8360 | { |
baa8575b SM |
8361 | /* If there are events left in the queue, or unacknowledged |
8362 | notifications, then tell the event loop to call us again. */ | |
8363 | if (!rs->stop_reply_queue.empty () | |
8364 | || rs->notif_state->pending_event[notif_client_stop.id] != nullptr) | |
6b8edb51 | 8365 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
c8e38a49 | 8366 | } |
c8e38a49 PA |
8367 | |
8368 | return event_ptid; | |
8369 | } | |
8370 | ||
74ca34ce | 8371 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 8372 | |
6b8edb51 PA |
8373 | int |
8374 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
8375 | packet_reg *reg) | |
b96ec7ac | 8376 | { |
ac7936df | 8377 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 8378 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8379 | char *buf, *p; |
9890e433 | 8380 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
8381 | int i; |
8382 | ||
4082afcc | 8383 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
8384 | return 0; |
8385 | ||
8386 | if (reg->pnum == -1) | |
8387 | return 0; | |
8388 | ||
8d64371b | 8389 | p = rs->buf.data (); |
fcad0fa4 | 8390 | *p++ = 'p'; |
74ca34ce | 8391 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 8392 | *p++ = '\0'; |
1f4437a4 | 8393 | putpkt (rs->buf); |
8d64371b | 8394 | getpkt (&rs->buf, 0); |
3f9a994c | 8395 | |
8d64371b | 8396 | buf = rs->buf.data (); |
2e9f7625 | 8397 | |
8d64371b | 8398 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_p])) |
74ca34ce DJ |
8399 | { |
8400 | case PACKET_OK: | |
8401 | break; | |
8402 | case PACKET_UNKNOWN: | |
8403 | return 0; | |
8404 | case PACKET_ERROR: | |
27a9c0bf | 8405 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 8406 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
8407 | reg->regnum), |
8408 | buf); | |
74ca34ce | 8409 | } |
3f9a994c JB |
8410 | |
8411 | /* If this register is unfetchable, tell the regcache. */ | |
8412 | if (buf[0] == 'x') | |
8480adf2 | 8413 | { |
73e1c03f | 8414 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 8415 | return 1; |
b96ec7ac | 8416 | } |
b96ec7ac | 8417 | |
3f9a994c JB |
8418 | /* Otherwise, parse and supply the value. */ |
8419 | p = buf; | |
8420 | i = 0; | |
8421 | while (p[0] != 0) | |
8422 | { | |
8423 | if (p[1] == 0) | |
74ca34ce | 8424 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
8425 | |
8426 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8427 | p += 2; | |
8428 | } | |
73e1c03f | 8429 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 8430 | return 1; |
b96ec7ac AC |
8431 | } |
8432 | ||
74ca34ce DJ |
8433 | /* Fetch the registers included in the target's 'g' packet. */ |
8434 | ||
6b8edb51 PA |
8435 | int |
8436 | remote_target::send_g_packet () | |
c906108c | 8437 | { |
d01949b6 | 8438 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 8439 | int buf_len; |
c906108c | 8440 | |
8d64371b | 8441 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "g"); |
b75abf5b | 8442 | putpkt (rs->buf); |
8d64371b | 8443 | getpkt (&rs->buf, 0); |
b75abf5b AK |
8444 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
8445 | error (_("Could not read registers; remote failure reply '%s'"), | |
dda83cd7 | 8446 | rs->buf.data ()); |
c906108c | 8447 | |
29709017 DJ |
8448 | /* We can get out of synch in various cases. If the first character |
8449 | in the buffer is not a hex character, assume that has happened | |
8450 | and try to fetch another packet to read. */ | |
8451 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
8452 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
8453 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
8454 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
8455 | { | |
2189c312 | 8456 | remote_debug_printf ("Bad register packet; fetching a new packet"); |
8d64371b | 8457 | getpkt (&rs->buf, 0); |
29709017 DJ |
8458 | } |
8459 | ||
8d64371b | 8460 | buf_len = strlen (rs->buf.data ()); |
74ca34ce DJ |
8461 | |
8462 | /* Sanity check the received packet. */ | |
8463 | if (buf_len % 2 != 0) | |
8d64371b | 8464 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf.data ()); |
29709017 DJ |
8465 | |
8466 | return buf_len / 2; | |
8467 | } | |
8468 | ||
6b8edb51 PA |
8469 | void |
8470 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 8471 | { |
ac7936df | 8472 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 8473 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8474 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
8475 | int i, buf_len; |
8476 | char *p; | |
8477 | char *regs; | |
8478 | ||
8d64371b | 8479 | buf_len = strlen (rs->buf.data ()); |
29709017 DJ |
8480 | |
8481 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 8482 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 | 8483 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8d64371b TT |
8484 | "bytes): %s"), |
8485 | rsa->sizeof_g_packet, buf_len / 2, | |
8486 | rs->buf.data ()); | |
74ca34ce DJ |
8487 | |
8488 | /* Save the size of the packet sent to us by the target. It is used | |
8489 | as a heuristic when determining the max size of packets that the | |
8490 | target can safely receive. */ | |
8491 | if (rsa->actual_register_packet_size == 0) | |
8492 | rsa->actual_register_packet_size = buf_len; | |
8493 | ||
8494 | /* If this is smaller than we guessed the 'g' packet would be, | |
8495 | update our records. A 'g' reply that doesn't include a register's | |
8496 | value implies either that the register is not available, or that | |
8497 | the 'p' packet must be used. */ | |
8498 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8499 | { |
9dc193c3 | 8500 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8501 | |
4a22f64d | 8502 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8503 | { |
9dc193c3 LF |
8504 | long offset = rsa->regs[i].offset; |
8505 | long reg_size = register_size (gdbarch, i); | |
8506 | ||
74ca34ce DJ |
8507 | if (rsa->regs[i].pnum == -1) |
8508 | continue; | |
8509 | ||
9dc193c3 | 8510 | if (offset >= sizeof_g_packet) |
74ca34ce | 8511 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8512 | else if (offset + reg_size > sizeof_g_packet) |
8513 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8514 | else |
74ca34ce | 8515 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8516 | } |
9dc193c3 LF |
8517 | |
8518 | /* Looks valid enough, we can assume this is the correct length | |
dda83cd7 SM |
8519 | for a 'g' packet. It's important not to adjust |
8520 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8521 | this "if" won't be run the next time the method is called | |
8522 | with a packet of the same size and one of the internal errors | |
8523 | below will trigger instead. */ | |
9dc193c3 | 8524 | rsa->sizeof_g_packet = sizeof_g_packet; |
74ca34ce | 8525 | } |
b323314b | 8526 | |
224c3ddb | 8527 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8528 | |
8529 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8530 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8531 | |
c906108c SS |
8532 | /* Reply describes registers byte by byte, each byte encoded as two |
8533 | hex characters. Suck them all up, then supply them to the | |
8534 | register cacheing/storage mechanism. */ | |
8535 | ||
8d64371b | 8536 | p = rs->buf.data (); |
ea9c271d | 8537 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8538 | { |
74ca34ce DJ |
8539 | if (p[0] == 0 || p[1] == 0) |
8540 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
8541 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8542 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 8543 | |
c906108c | 8544 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8545 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8546 | else |
8547 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8548 | p += 2; | |
8549 | } | |
8550 | ||
a744cf53 MS |
8551 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8552 | { | |
8553 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8554 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8555 | |
8556 | if (r->in_g_packet) | |
8557 | { | |
8d64371b | 8558 | if ((r->offset + reg_size) * 2 > strlen (rs->buf.data ())) |
a744cf53 MS |
8559 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
8560 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8561 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8562 | else if (rs->buf[r->offset * 2] == 'x') |
8563 | { | |
8d64371b | 8564 | gdb_assert (r->offset * 2 < strlen (rs->buf.data ())); |
a744cf53 MS |
8565 | /* The register isn't available, mark it as such (at |
8566 | the same time setting the value to zero). */ | |
73e1c03f | 8567 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8568 | } |
8569 | else | |
73e1c03f | 8570 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8571 | } |
8572 | } | |
c906108c SS |
8573 | } |
8574 | ||
6b8edb51 PA |
8575 | void |
8576 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8577 | { |
8578 | send_g_packet (); | |
56be3814 | 8579 | process_g_packet (regcache); |
29709017 DJ |
8580 | } |
8581 | ||
e6e4e701 PA |
8582 | /* Make the remote selected traceframe match GDB's selected |
8583 | traceframe. */ | |
8584 | ||
6b8edb51 PA |
8585 | void |
8586 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8587 | { |
8588 | int newnum; | |
262e1174 | 8589 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8590 | |
262e1174 | 8591 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8592 | return; |
8593 | ||
8594 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8595 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8596 | |
8597 | newnum = target_trace_find (tfind_number, | |
8598 | get_traceframe_number (), 0, 0, NULL); | |
8599 | ||
8600 | /* Should not happen. If it does, all bets are off. */ | |
8601 | if (newnum != get_traceframe_number ()) | |
8602 | warning (_("could not set remote traceframe")); | |
8603 | } | |
8604 | ||
f6ac5f3d PA |
8605 | void |
8606 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8607 | { |
ac7936df | 8608 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8609 | struct remote_state *rs = get_remote_state (); |
8610 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8611 | int i; |
8612 | ||
e6e4e701 | 8613 | set_remote_traceframe (); |
222312d3 | 8614 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8615 | |
8616 | if (regnum >= 0) | |
8617 | { | |
5cd63fda | 8618 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8619 | |
74ca34ce DJ |
8620 | gdb_assert (reg != NULL); |
8621 | ||
8622 | /* If this register might be in the 'g' packet, try that first - | |
8623 | we are likely to read more than one register. If this is the | |
8624 | first 'g' packet, we might be overly optimistic about its | |
8625 | contents, so fall back to 'p'. */ | |
8626 | if (reg->in_g_packet) | |
8627 | { | |
56be3814 | 8628 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8629 | if (reg->in_g_packet) |
8630 | return; | |
8631 | } | |
8632 | ||
56be3814 | 8633 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8634 | return; |
8635 | ||
8636 | /* This register is not available. */ | |
73e1c03f | 8637 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8638 | |
8639 | return; | |
8640 | } | |
8641 | ||
56be3814 | 8642 | fetch_registers_using_g (regcache); |
74ca34ce | 8643 | |
5cd63fda | 8644 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8645 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8646 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8647 | { |
8648 | /* This register is not available. */ | |
73e1c03f | 8649 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8650 | } |
8651 | } | |
8652 | ||
c906108c SS |
8653 | /* Prepare to store registers. Since we may send them all (using a |
8654 | 'G' request), we have to read out the ones we don't want to change | |
8655 | first. */ | |
8656 | ||
f6ac5f3d PA |
8657 | void |
8658 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8659 | { |
9d6eea31 PA |
8660 | struct remote_state *rs = get_remote_state (); |
8661 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8662 | int i; |
cf0e1e0d | 8663 | |
c906108c | 8664 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8665 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8666 | { |
8667 | case PACKET_DISABLE: | |
8668 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8669 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8670 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8671 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8672 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8673 | break; |
8674 | case PACKET_ENABLE: | |
8675 | break; | |
8676 | } | |
8677 | } | |
8678 | ||
ad10f812 | 8679 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8680 | packet was not recognized. */ |
5a2468f5 | 8681 | |
6b8edb51 PA |
8682 | int |
8683 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8684 | packet_reg *reg) | |
5a2468f5 | 8685 | { |
ac7936df | 8686 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8687 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8688 | /* Try storing a single register. */ |
8d64371b | 8689 | char *buf = rs->buf.data (); |
9890e433 | 8690 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8691 | char *p; |
5a2468f5 | 8692 | |
4082afcc | 8693 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8694 | return 0; |
8695 | ||
8696 | if (reg->pnum == -1) | |
8697 | return 0; | |
8698 | ||
ea9c271d | 8699 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8700 | p = buf + strlen (buf); |
34a79281 | 8701 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8702 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 | 8703 | putpkt (rs->buf); |
8d64371b | 8704 | getpkt (&rs->buf, 0); |
5a2468f5 | 8705 | |
74ca34ce DJ |
8706 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8707 | { | |
8708 | case PACKET_OK: | |
8709 | return 1; | |
8710 | case PACKET_ERROR: | |
27a9c0bf | 8711 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8d64371b | 8712 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf.data ()); |
74ca34ce DJ |
8713 | case PACKET_UNKNOWN: |
8714 | return 0; | |
8715 | default: | |
8716 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8717 | } | |
c906108c SS |
8718 | } |
8719 | ||
23860348 MS |
8720 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8721 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8722 | |
6b8edb51 PA |
8723 | void |
8724 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8725 | { |
d01949b6 | 8726 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8727 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8728 | gdb_byte *regs; |
c906108c SS |
8729 | char *p; |
8730 | ||
193cb69f AC |
8731 | /* Extract all the registers in the regcache copying them into a |
8732 | local buffer. */ | |
8733 | { | |
b323314b | 8734 | int i; |
a744cf53 | 8735 | |
224c3ddb | 8736 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8737 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8738 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8739 | { |
ea9c271d | 8740 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8741 | |
b323314b | 8742 | if (r->in_g_packet) |
34a79281 | 8743 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8744 | } |
8745 | } | |
c906108c SS |
8746 | |
8747 | /* Command describes registers byte by byte, | |
8748 | each byte encoded as two hex characters. */ | |
8d64371b | 8749 | p = rs->buf.data (); |
193cb69f | 8750 | *p++ = 'G'; |
74ca34ce | 8751 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 | 8752 | putpkt (rs->buf); |
8d64371b | 8753 | getpkt (&rs->buf, 0); |
1f4437a4 | 8754 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
27a9c0bf | 8755 | error (_("Could not write registers; remote failure reply '%s'"), |
8d64371b | 8756 | rs->buf.data ()); |
c906108c | 8757 | } |
74ca34ce DJ |
8758 | |
8759 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8760 | of the register cache buffer. FIXME: ignores errors. */ | |
8761 | ||
f6ac5f3d PA |
8762 | void |
8763 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8764 | { |
5cd63fda | 8765 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8766 | struct remote_state *rs = get_remote_state (); |
8767 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8768 | int i; |
8769 | ||
e6e4e701 | 8770 | set_remote_traceframe (); |
222312d3 | 8771 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8772 | |
8773 | if (regnum >= 0) | |
8774 | { | |
5cd63fda | 8775 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8776 | |
74ca34ce DJ |
8777 | gdb_assert (reg != NULL); |
8778 | ||
8779 | /* Always prefer to store registers using the 'P' packet if | |
8780 | possible; we often change only a small number of registers. | |
8781 | Sometimes we change a larger number; we'd need help from a | |
8782 | higher layer to know to use 'G'. */ | |
56be3814 | 8783 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8784 | return; |
8785 | ||
8786 | /* For now, don't complain if we have no way to write the | |
8787 | register. GDB loses track of unavailable registers too | |
8788 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8789 | any way to read the register, either... */ |
74ca34ce DJ |
8790 | if (!reg->in_g_packet) |
8791 | return; | |
8792 | ||
56be3814 | 8793 | store_registers_using_G (regcache); |
74ca34ce DJ |
8794 | return; |
8795 | } | |
8796 | ||
56be3814 | 8797 | store_registers_using_G (regcache); |
74ca34ce | 8798 | |
5cd63fda | 8799 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8800 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8801 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8802 | /* See above for why we do not issue an error here. */ |
8803 | continue; | |
8804 | } | |
c906108c SS |
8805 | \f |
8806 | ||
8807 | /* Return the number of hex digits in num. */ | |
8808 | ||
8809 | static int | |
fba45db2 | 8810 | hexnumlen (ULONGEST num) |
c906108c SS |
8811 | { |
8812 | int i; | |
8813 | ||
8814 | for (i = 0; num != 0; i++) | |
8815 | num >>= 4; | |
8816 | ||
325fac50 | 8817 | return std::max (i, 1); |
c906108c SS |
8818 | } |
8819 | ||
2df3850c | 8820 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8821 | |
8822 | static int | |
fba45db2 | 8823 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8824 | { |
c906108c | 8825 | int len = hexnumlen (num); |
a744cf53 | 8826 | |
2df3850c JM |
8827 | return hexnumnstr (buf, num, len); |
8828 | } | |
8829 | ||
c906108c | 8830 | |
2df3850c | 8831 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8832 | |
2df3850c | 8833 | static int |
fba45db2 | 8834 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8835 | { |
8836 | int i; | |
8837 | ||
8838 | buf[width] = '\0'; | |
8839 | ||
8840 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8841 | { |
c5aa993b | 8842 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8843 | num >>= 4; |
8844 | } | |
8845 | ||
2df3850c | 8846 | return width; |
c906108c SS |
8847 | } |
8848 | ||
23860348 | 8849 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8850 | |
8851 | static CORE_ADDR | |
fba45db2 | 8852 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8853 | { |
883b9c6c | 8854 | unsigned int address_size = remote_address_size; |
a744cf53 | 8855 | |
911c95a5 UW |
8856 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8857 | if (!address_size) | |
f5656ead | 8858 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8859 | |
8860 | if (address_size > 0 | |
8861 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8862 | { |
8863 | /* Only create a mask when that mask can safely be constructed | |
dda83cd7 | 8864 | in a ULONGEST variable. */ |
c906108c | 8865 | ULONGEST mask = 1; |
a744cf53 | 8866 | |
911c95a5 | 8867 | mask = (mask << address_size) - 1; |
c906108c SS |
8868 | addr &= mask; |
8869 | } | |
8870 | return addr; | |
8871 | } | |
8872 | ||
8873 | /* Determine whether the remote target supports binary downloading. | |
8874 | This is accomplished by sending a no-op memory write of zero length | |
8875 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8876 | the whole packet, since many stubs strip the eighth bit and |
8877 | subsequently compute a wrong checksum, which causes real havoc with | |
8878 | remote_write_bytes. | |
7a292a7a | 8879 | |
96baa820 | 8880 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8881 | clean. In cases like this, the user should clear "remote |
23860348 | 8882 | X-packet". */ |
96baa820 | 8883 | |
6b8edb51 PA |
8884 | void |
8885 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 8886 | { |
d01949b6 | 8887 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8888 | |
4082afcc | 8889 | switch (packet_support (PACKET_X)) |
c906108c | 8890 | { |
96baa820 JM |
8891 | case PACKET_DISABLE: |
8892 | break; | |
8893 | case PACKET_ENABLE: | |
8894 | break; | |
8895 | case PACKET_SUPPORT_UNKNOWN: | |
8896 | { | |
96baa820 | 8897 | char *p; |
802188a7 | 8898 | |
8d64371b | 8899 | p = rs->buf.data (); |
96baa820 JM |
8900 | *p++ = 'X'; |
8901 | p += hexnumstr (p, (ULONGEST) addr); | |
8902 | *p++ = ','; | |
8903 | p += hexnumstr (p, (ULONGEST) 0); | |
8904 | *p++ = ':'; | |
8905 | *p = '\0'; | |
802188a7 | 8906 | |
8d64371b TT |
8907 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8908 | getpkt (&rs->buf, 0); | |
c906108c | 8909 | |
2e9f7625 | 8910 | if (rs->buf[0] == '\0') |
96baa820 | 8911 | { |
2189c312 | 8912 | remote_debug_printf ("binary downloading NOT supported by target"); |
444abaca | 8913 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8914 | } |
8915 | else | |
8916 | { | |
2189c312 | 8917 | remote_debug_printf ("binary downloading supported by target"); |
444abaca | 8918 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8919 | } |
8920 | break; | |
8921 | } | |
c906108c SS |
8922 | } |
8923 | } | |
8924 | ||
124e13d9 SM |
8925 | /* Helper function to resize the payload in order to try to get a good |
8926 | alignment. We try to write an amount of data such that the next write will | |
8927 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8928 | ||
8929 | static int | |
8930 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8931 | { | |
8932 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8933 | } | |
8934 | ||
c906108c SS |
8935 | /* Write memory data directly to the remote machine. |
8936 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8937 | HEADER is the starting part of the packet. |
c906108c SS |
8938 | MEMADDR is the address in the remote memory space. |
8939 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8940 | LEN_UNITS is the number of addressable units to write. |
8941 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8942 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8943 | should send data as binary ('X'), or hex-encoded ('M'). | |
8944 | ||
8945 | The function creates packet of the form | |
8946 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8947 | ||
124e13d9 | 8948 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8949 | |
8950 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8951 | are omitted. | |
8952 | ||
9b409511 | 8953 | Return the transferred status, error or OK (an |
124e13d9 SM |
8954 | 'enum target_xfer_status' value). Save the number of addressable units |
8955 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8956 | ||
8957 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8958 | exchange between gdb and the stub could look like (?? in place of the | |
8959 | checksum): | |
8960 | ||
8961 | -> $m1000,4#?? | |
8962 | <- aaaabbbbccccdddd | |
8963 | ||
8964 | -> $M1000,3:eeeeffffeeee#?? | |
8965 | <- OK | |
8966 | ||
8967 | -> $m1000,4#?? | |
8968 | <- eeeeffffeeeedddd */ | |
c906108c | 8969 | |
6b8edb51 PA |
8970 | target_xfer_status |
8971 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
8972 | const gdb_byte *myaddr, | |
8973 | ULONGEST len_units, | |
8974 | int unit_size, | |
8975 | ULONGEST *xfered_len_units, | |
8976 | char packet_format, int use_length) | |
c906108c | 8977 | { |
6d820c5c | 8978 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8979 | char *p; |
a76d924d DJ |
8980 | char *plen = NULL; |
8981 | int plenlen = 0; | |
124e13d9 SM |
8982 | int todo_units; |
8983 | int units_written; | |
8984 | int payload_capacity_bytes; | |
8985 | int payload_length_bytes; | |
a76d924d DJ |
8986 | |
8987 | if (packet_format != 'X' && packet_format != 'M') | |
8988 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8989 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8990 | |
124e13d9 | 8991 | if (len_units == 0) |
9b409511 | 8992 | return TARGET_XFER_EOF; |
b2182ed2 | 8993 | |
124e13d9 | 8994 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8995 | |
6d820c5c DJ |
8996 | /* The packet buffer will be large enough for the payload; |
8997 | get_memory_packet_size ensures this. */ | |
a76d924d | 8998 | rs->buf[0] = '\0'; |
c906108c | 8999 | |
a257b5bb | 9000 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
9001 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
9002 | ||
124e13d9 | 9003 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 9004 | if (!use_length) |
0df8b418 | 9005 | /* The comma won't be used. */ |
124e13d9 SM |
9006 | payload_capacity_bytes += 1; |
9007 | payload_capacity_bytes -= strlen (header); | |
9008 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 9009 | |
a76d924d | 9010 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 9011 | |
8d64371b TT |
9012 | strcat (rs->buf.data (), header); |
9013 | p = rs->buf.data () + strlen (header); | |
a76d924d DJ |
9014 | |
9015 | /* Compute a best guess of the number of bytes actually transfered. */ | |
9016 | if (packet_format == 'X') | |
c906108c | 9017 | { |
23860348 | 9018 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
9019 | todo_units = std::min (len_units, |
9020 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 9021 | if (use_length) |
124e13d9 | 9022 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 9023 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
9024 | } |
9025 | else | |
9026 | { | |
124e13d9 | 9027 | /* Number of bytes that will fit. */ |
325fac50 PA |
9028 | todo_units |
9029 | = std::min (len_units, | |
9030 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 9031 | if (use_length) |
124e13d9 | 9032 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
9033 | todo_units = std::min (todo_units, |
9034 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 9035 | } |
a76d924d | 9036 | |
124e13d9 | 9037 | if (todo_units <= 0) |
3de11b2e | 9038 | internal_error (__FILE__, __LINE__, |
405f8e94 | 9039 | _("minimum packet size too small to write data")); |
802188a7 | 9040 | |
6765f3e5 DJ |
9041 | /* If we already need another packet, then try to align the end |
9042 | of this packet to a useful boundary. */ | |
124e13d9 SM |
9043 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
9044 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 9045 | |
a257b5bb | 9046 | /* Append "<memaddr>". */ |
917317f4 JM |
9047 | memaddr = remote_address_masked (memaddr); |
9048 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 9049 | |
a76d924d DJ |
9050 | if (use_length) |
9051 | { | |
9052 | /* Append ",". */ | |
9053 | *p++ = ','; | |
802188a7 | 9054 | |
124e13d9 | 9055 | /* Append the length and retain its location and size. It may need to be |
dda83cd7 | 9056 | adjusted once the packet body has been created. */ |
a76d924d | 9057 | plen = p; |
124e13d9 | 9058 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
9059 | p += plenlen; |
9060 | } | |
a257b5bb AC |
9061 | |
9062 | /* Append ":". */ | |
917317f4 JM |
9063 | *p++ = ':'; |
9064 | *p = '\0'; | |
802188a7 | 9065 | |
a257b5bb | 9066 | /* Append the packet body. */ |
a76d924d | 9067 | if (packet_format == 'X') |
917317f4 | 9068 | { |
917317f4 JM |
9069 | /* Binary mode. Send target system values byte by byte, in |
9070 | increasing byte addresses. Only escape certain critical | |
9071 | characters. */ | |
124e13d9 SM |
9072 | payload_length_bytes = |
9073 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
9074 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 9075 | |
124e13d9 | 9076 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
9077 | a second try to keep the end of the packet aligned. Don't do |
9078 | this if the packet is tiny. */ | |
124e13d9 | 9079 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 9080 | { |
124e13d9 SM |
9081 | int new_todo_units; |
9082 | ||
9083 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
9084 | ||
9085 | if (new_todo_units != units_written) | |
9086 | payload_length_bytes = | |
9087 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
9088 | (gdb_byte *) p, &units_written, | |
9089 | payload_capacity_bytes); | |
6765f3e5 DJ |
9090 | } |
9091 | ||
124e13d9 SM |
9092 | p += payload_length_bytes; |
9093 | if (use_length && units_written < todo_units) | |
c906108c | 9094 | { |
802188a7 | 9095 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 9096 | and we have actually sent fewer units than planned. |
917317f4 JM |
9097 | Fix-up the length field of the packet. Use the same |
9098 | number of characters as before. */ | |
124e13d9 SM |
9099 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
9100 | plenlen); | |
917317f4 | 9101 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 9102 | } |
a76d924d DJ |
9103 | } |
9104 | else | |
9105 | { | |
917317f4 JM |
9106 | /* Normal mode: Send target system values byte by byte, in |
9107 | increasing byte addresses. Each byte is encoded as a two hex | |
9108 | value. */ | |
124e13d9 SM |
9109 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
9110 | units_written = todo_units; | |
c906108c | 9111 | } |
802188a7 | 9112 | |
8d64371b TT |
9113 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
9114 | getpkt (&rs->buf, 0); | |
802188a7 | 9115 | |
2e9f7625 | 9116 | if (rs->buf[0] == 'E') |
00d84524 | 9117 | return TARGET_XFER_E_IO; |
802188a7 | 9118 | |
124e13d9 SM |
9119 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
9120 | send fewer units than we'd planned. */ | |
9121 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 9122 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
9123 | } |
9124 | ||
a76d924d DJ |
9125 | /* Write memory data directly to the remote machine. |
9126 | This does not inform the data cache; the data cache uses this. | |
9127 | MEMADDR is the address in the remote memory space. | |
9128 | MYADDR is the address of the buffer in our space. | |
9129 | LEN is the number of bytes. | |
9130 | ||
9b409511 YQ |
9131 | Return the transferred status, error or OK (an |
9132 | 'enum target_xfer_status' value). Save the number of bytes | |
9133 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 9134 | |
6b8edb51 PA |
9135 | target_xfer_status |
9136 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
9137 | ULONGEST len, int unit_size, | |
9138 | ULONGEST *xfered_len) | |
a76d924d | 9139 | { |
a121b7c1 | 9140 | const char *packet_format = NULL; |
a76d924d DJ |
9141 | |
9142 | /* Check whether the target supports binary download. */ | |
9143 | check_binary_download (memaddr); | |
9144 | ||
4082afcc | 9145 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
9146 | { |
9147 | case PACKET_ENABLE: | |
9148 | packet_format = "X"; | |
9149 | break; | |
9150 | case PACKET_DISABLE: | |
9151 | packet_format = "M"; | |
9152 | break; | |
9153 | case PACKET_SUPPORT_UNKNOWN: | |
9154 | internal_error (__FILE__, __LINE__, | |
9155 | _("remote_write_bytes: bad internal state")); | |
9156 | default: | |
9157 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
9158 | } | |
9159 | ||
9160 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 9161 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 9162 | packet_format[0], 1); |
a76d924d DJ |
9163 | } |
9164 | ||
9217e74e YQ |
9165 | /* Read memory data directly from the remote machine. |
9166 | This does not use the data cache; the data cache uses this. | |
9167 | MEMADDR is the address in the remote memory space. | |
9168 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
9169 | LEN_UNITS is the number of addressable memory units to read.. |
9170 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
9171 | |
9172 | Return the transferred status, error or OK (an | |
9173 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
9174 | transferred in *XFERED_LEN_UNITS. |
9175 | ||
9176 | See the comment of remote_write_bytes_aux for an example of | |
9177 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 9178 | |
6b8edb51 PA |
9179 | target_xfer_status |
9180 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
9181 | ULONGEST len_units, | |
9182 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
9183 | { |
9184 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 9185 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 9186 | char *p; |
124e13d9 SM |
9187 | int todo_units; |
9188 | int decoded_bytes; | |
9217e74e | 9189 | |
124e13d9 | 9190 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
9191 | /* The packet buffer will be large enough for the payload; |
9192 | get_memory_packet_size ensures this. */ | |
9193 | ||
124e13d9 | 9194 | /* Number of units that will fit. */ |
325fac50 PA |
9195 | todo_units = std::min (len_units, |
9196 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
9197 | |
9198 | /* Construct "m"<memaddr>","<len>". */ | |
9199 | memaddr = remote_address_masked (memaddr); | |
8d64371b | 9200 | p = rs->buf.data (); |
9217e74e YQ |
9201 | *p++ = 'm'; |
9202 | p += hexnumstr (p, (ULONGEST) memaddr); | |
9203 | *p++ = ','; | |
124e13d9 | 9204 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
9205 | *p = '\0'; |
9206 | putpkt (rs->buf); | |
8d64371b | 9207 | getpkt (&rs->buf, 0); |
9217e74e YQ |
9208 | if (rs->buf[0] == 'E' |
9209 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
9210 | && rs->buf[3] == '\0') | |
9211 | return TARGET_XFER_E_IO; | |
9212 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
9213 | characters. */ | |
8d64371b | 9214 | p = rs->buf.data (); |
124e13d9 | 9215 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 9216 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 9217 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 9218 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
9219 | } |
9220 | ||
b55fbac4 YQ |
9221 | /* Using the set of read-only target sections of remote, read live |
9222 | read-only memory. | |
8acf9577 YQ |
9223 | |
9224 | For interface/parameters/return description see target.h, | |
9225 | to_xfer_partial. */ | |
9226 | ||
6b8edb51 PA |
9227 | target_xfer_status |
9228 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
9229 | ULONGEST memaddr, | |
9230 | ULONGEST len, | |
9231 | int unit_size, | |
9232 | ULONGEST *xfered_len) | |
8acf9577 | 9233 | { |
19cf757a | 9234 | const struct target_section *secp; |
8acf9577 | 9235 | |
6b8edb51 | 9236 | secp = target_section_by_addr (this, memaddr); |
8acf9577 | 9237 | if (secp != NULL |
fd361982 | 9238 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
8acf9577 | 9239 | { |
8acf9577 YQ |
9240 | ULONGEST memend = memaddr + len; |
9241 | ||
19cf757a AB |
9242 | const target_section_table *table = target_get_section_table (this); |
9243 | for (const target_section &p : *table) | |
8acf9577 | 9244 | { |
bb2a6777 | 9245 | if (memaddr >= p.addr) |
8acf9577 | 9246 | { |
bb2a6777 | 9247 | if (memend <= p.endaddr) |
8acf9577 YQ |
9248 | { |
9249 | /* Entire transfer is within this section. */ | |
124e13d9 | 9250 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9251 | xfered_len); |
8acf9577 | 9252 | } |
bb2a6777 | 9253 | else if (memaddr >= p.endaddr) |
8acf9577 YQ |
9254 | { |
9255 | /* This section ends before the transfer starts. */ | |
9256 | continue; | |
9257 | } | |
9258 | else | |
9259 | { | |
9260 | /* This section overlaps the transfer. Just do half. */ | |
bb2a6777 | 9261 | len = p.endaddr - memaddr; |
124e13d9 | 9262 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9263 | xfered_len); |
8acf9577 YQ |
9264 | } |
9265 | } | |
9266 | } | |
9267 | } | |
9268 | ||
9269 | return TARGET_XFER_EOF; | |
9270 | } | |
9271 | ||
9217e74e YQ |
9272 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
9273 | first if the requested memory is unavailable in traceframe. | |
9274 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 9275 | |
6b8edb51 PA |
9276 | target_xfer_status |
9277 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
9278 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
9279 | ULONGEST *xfered_len) | |
c906108c | 9280 | { |
6b6aa828 | 9281 | if (len == 0) |
96c4f946 | 9282 | return TARGET_XFER_EOF; |
b2182ed2 | 9283 | |
8acf9577 YQ |
9284 | if (get_traceframe_number () != -1) |
9285 | { | |
a79b1bc6 | 9286 | std::vector<mem_range> available; |
8acf9577 YQ |
9287 | |
9288 | /* If we fail to get the set of available memory, then the | |
9289 | target does not support querying traceframe info, and so we | |
9290 | attempt reading from the traceframe anyway (assuming the | |
9291 | target implements the old QTro packet then). */ | |
9292 | if (traceframe_available_memory (&available, memaddr, len)) | |
9293 | { | |
a79b1bc6 | 9294 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
9295 | { |
9296 | enum target_xfer_status res; | |
9297 | ||
9298 | /* Don't read into the traceframe's available | |
9299 | memory. */ | |
a79b1bc6 | 9300 | if (!available.empty ()) |
8acf9577 YQ |
9301 | { |
9302 | LONGEST oldlen = len; | |
9303 | ||
a79b1bc6 | 9304 | len = available[0].start - memaddr; |
8acf9577 YQ |
9305 | gdb_assert (len <= oldlen); |
9306 | } | |
9307 | ||
8acf9577 | 9308 | /* This goes through the topmost target again. */ |
6b8edb51 | 9309 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 9310 | len, unit_size, xfered_len); |
8acf9577 YQ |
9311 | if (res == TARGET_XFER_OK) |
9312 | return TARGET_XFER_OK; | |
9313 | else | |
9314 | { | |
9315 | /* No use trying further, we know some memory starting | |
9316 | at MEMADDR isn't available. */ | |
9317 | *xfered_len = len; | |
92ffd475 PC |
9318 | return (*xfered_len != 0) ? |
9319 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
9320 | } |
9321 | } | |
9322 | ||
9323 | /* Don't try to read more than how much is available, in | |
9324 | case the target implements the deprecated QTro packet to | |
9325 | cater for older GDBs (the target's knowledge of read-only | |
9326 | sections may be outdated by now). */ | |
a79b1bc6 | 9327 | len = available[0].length; |
8acf9577 YQ |
9328 | } |
9329 | } | |
9330 | ||
124e13d9 | 9331 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 9332 | } |
74531fed | 9333 | |
c906108c | 9334 | \f |
c906108c | 9335 | |
a76d924d DJ |
9336 | /* Sends a packet with content determined by the printf format string |
9337 | FORMAT and the remaining arguments, then gets the reply. Returns | |
9338 | whether the packet was a success, a failure, or unknown. */ | |
9339 | ||
6b8edb51 PA |
9340 | packet_result |
9341 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
9342 | { |
9343 | struct remote_state *rs = get_remote_state (); | |
9344 | int max_size = get_remote_packet_size (); | |
a76d924d | 9345 | va_list ap; |
a744cf53 | 9346 | |
a76d924d DJ |
9347 | va_start (ap, format); |
9348 | ||
9349 | rs->buf[0] = '\0'; | |
8d64371b | 9350 | int size = vsnprintf (rs->buf.data (), max_size, format, ap); |
33b031ce GB |
9351 | |
9352 | va_end (ap); | |
9353 | ||
9354 | if (size >= max_size) | |
9b20d036 | 9355 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
9356 | |
9357 | if (putpkt (rs->buf) < 0) | |
9358 | error (_("Communication problem with target.")); | |
9359 | ||
9360 | rs->buf[0] = '\0'; | |
8d64371b | 9361 | getpkt (&rs->buf, 0); |
a76d924d DJ |
9362 | |
9363 | return packet_check_result (rs->buf); | |
9364 | } | |
9365 | ||
a76d924d DJ |
9366 | /* Flash writing can take quite some time. We'll set |
9367 | effectively infinite timeout for flash operations. | |
9368 | In future, we'll need to decide on a better approach. */ | |
9369 | static const int remote_flash_timeout = 1000; | |
9370 | ||
f6ac5f3d PA |
9371 | void |
9372 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 9373 | { |
f5656ead | 9374 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 9375 | enum packet_result ret; |
2ec845e7 TT |
9376 | scoped_restore restore_timeout |
9377 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
9378 | |
9379 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 9380 | phex (address, addr_size), |
a76d924d DJ |
9381 | phex (length, 4)); |
9382 | switch (ret) | |
9383 | { | |
9384 | case PACKET_UNKNOWN: | |
9385 | error (_("Remote target does not support flash erase")); | |
9386 | case PACKET_ERROR: | |
9387 | error (_("Error erasing flash with vFlashErase packet")); | |
9388 | default: | |
9389 | break; | |
9390 | } | |
a76d924d DJ |
9391 | } |
9392 | ||
6b8edb51 PA |
9393 | target_xfer_status |
9394 | remote_target::remote_flash_write (ULONGEST address, | |
9395 | ULONGEST length, ULONGEST *xfered_len, | |
9396 | const gdb_byte *data) | |
a76d924d | 9397 | { |
2ec845e7 TT |
9398 | scoped_restore restore_timeout |
9399 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9400 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
9401 | xfered_len,'X', 0); | |
a76d924d DJ |
9402 | } |
9403 | ||
f6ac5f3d PA |
9404 | void |
9405 | remote_target::flash_done () | |
a76d924d | 9406 | { |
a76d924d | 9407 | int ret; |
a76d924d | 9408 | |
2ec845e7 TT |
9409 | scoped_restore restore_timeout |
9410 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9411 | ||
a76d924d | 9412 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
9413 | |
9414 | switch (ret) | |
9415 | { | |
9416 | case PACKET_UNKNOWN: | |
9417 | error (_("Remote target does not support vFlashDone")); | |
9418 | case PACKET_ERROR: | |
9419 | error (_("Error finishing flash operation")); | |
9420 | default: | |
9421 | break; | |
9422 | } | |
9423 | } | |
9424 | ||
c906108c SS |
9425 | \f |
9426 | /* Stuff for dealing with the packets which are part of this protocol. | |
9427 | See comment at top of file for details. */ | |
9428 | ||
1927e618 PA |
9429 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
9430 | error to higher layers. Called when a serial error is detected. | |
9431 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
9432 | the system error message for errno at function entry and final dot |
9433 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
9434 | |
9435 | static void | |
5b6d1e4f | 9436 | unpush_and_perror (remote_target *target, const char *string) |
1927e618 | 9437 | { |
d6cb50a2 | 9438 | int saved_errno = errno; |
1927e618 | 9439 | |
5b6d1e4f | 9440 | remote_unpush_target (target); |
d6cb50a2 JK |
9441 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
9442 | safe_strerror (saved_errno)); | |
1927e618 PA |
9443 | } |
9444 | ||
048094ac PA |
9445 | /* Read a single character from the remote end. The current quit |
9446 | handler is overridden to avoid quitting in the middle of packet | |
9447 | sequence, as that would break communication with the remote server. | |
9448 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 9449 | |
6b8edb51 PA |
9450 | int |
9451 | remote_target::readchar (int timeout) | |
c906108c SS |
9452 | { |
9453 | int ch; | |
5d93a237 | 9454 | struct remote_state *rs = get_remote_state (); |
048094ac | 9455 | |
2ec845e7 | 9456 | { |
6b8edb51 PA |
9457 | scoped_restore restore_quit_target |
9458 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9459 | scoped_restore restore_quit |
6b8edb51 | 9460 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 9461 | |
2ec845e7 | 9462 | rs->got_ctrlc_during_io = 0; |
c906108c | 9463 | |
2ec845e7 | 9464 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 9465 | |
2ec845e7 TT |
9466 | if (rs->got_ctrlc_during_io) |
9467 | set_quit_flag (); | |
9468 | } | |
048094ac | 9469 | |
2acceee2 | 9470 | if (ch >= 0) |
0876f84a | 9471 | return ch; |
2acceee2 JM |
9472 | |
9473 | switch ((enum serial_rc) ch) | |
c906108c SS |
9474 | { |
9475 | case SERIAL_EOF: | |
5b6d1e4f | 9476 | remote_unpush_target (this); |
598d3636 | 9477 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 9478 | /* no return */ |
c906108c | 9479 | case SERIAL_ERROR: |
5b6d1e4f PA |
9480 | unpush_and_perror (this, _("Remote communication error. " |
9481 | "Target disconnected.")); | |
2acceee2 | 9482 | /* no return */ |
c906108c | 9483 | case SERIAL_TIMEOUT: |
2acceee2 | 9484 | break; |
c906108c | 9485 | } |
2acceee2 | 9486 | return ch; |
c906108c SS |
9487 | } |
9488 | ||
c33e31fd | 9489 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9490 | writing fails. The current quit handler is overridden to avoid |
9491 | quitting in the middle of packet sequence, as that would break | |
9492 | communication with the remote server. See | |
9493 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9494 | |
6b8edb51 PA |
9495 | void |
9496 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9497 | { |
5d93a237 | 9498 | struct remote_state *rs = get_remote_state (); |
048094ac | 9499 | |
6b8edb51 PA |
9500 | scoped_restore restore_quit_target |
9501 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9502 | scoped_restore restore_quit |
6b8edb51 | 9503 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9504 | |
9505 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9506 | |
9507 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9508 | { |
5b6d1e4f PA |
9509 | unpush_and_perror (this, _("Remote communication error. " |
9510 | "Target disconnected.")); | |
c33e31fd | 9511 | } |
048094ac PA |
9512 | |
9513 | if (rs->got_ctrlc_during_io) | |
9514 | set_quit_flag (); | |
c33e31fd PA |
9515 | } |
9516 | ||
b3ced9ba PA |
9517 | /* Return a string representing an escaped version of BUF, of len N. |
9518 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9519 | |
b3ced9ba | 9520 | static std::string |
6e5abd65 PA |
9521 | escape_buffer (const char *buf, int n) |
9522 | { | |
d7e74731 | 9523 | string_file stb; |
6e5abd65 | 9524 | |
d7e74731 | 9525 | stb.putstrn (buf, n, '\\'); |
5d10a204 | 9526 | return stb.release (); |
6e5abd65 PA |
9527 | } |
9528 | ||
c906108c | 9529 | int |
6b8edb51 | 9530 | remote_target::putpkt (const char *buf) |
c906108c SS |
9531 | { |
9532 | return putpkt_binary (buf, strlen (buf)); | |
9533 | } | |
9534 | ||
6b8edb51 PA |
9535 | /* Wrapper around remote_target::putpkt to avoid exporting |
9536 | remote_target. */ | |
9537 | ||
9538 | int | |
9539 | putpkt (remote_target *remote, const char *buf) | |
9540 | { | |
9541 | return remote->putpkt (buf); | |
9542 | } | |
9543 | ||
c906108c | 9544 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9545 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9546 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9547 | and for a possible /0 if we are debugging (remote_debug) and want |
9548 | to print the sent packet as a string. */ | |
c906108c | 9549 | |
6b8edb51 PA |
9550 | int |
9551 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9552 | { |
2d717e4f | 9553 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9554 | int i; |
9555 | unsigned char csum = 0; | |
b80406ac TT |
9556 | gdb::def_vector<char> data (cnt + 6); |
9557 | char *buf2 = data.data (); | |
085dd6e6 | 9558 | |
c906108c SS |
9559 | int ch; |
9560 | int tcount = 0; | |
9561 | char *p; | |
9562 | ||
e24a49d8 PA |
9563 | /* Catch cases like trying to read memory or listing threads while |
9564 | we're waiting for a stop reply. The remote server wouldn't be | |
9565 | ready to handle this request, so we'd hang and timeout. We don't | |
9566 | have to worry about this in synchronous mode, because in that | |
9567 | case it's not possible to issue a command while the target is | |
74531fed PA |
9568 | running. This is not a problem in non-stop mode, because in that |
9569 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9570 | if (!target_is_non_stop_p () |
9571 | && target_is_async_p () | |
9572 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9573 | { |
9574 | error (_("Cannot execute this command while the target is running.\n" | |
9575 | "Use the \"interrupt\" command to stop the target\n" | |
9576 | "and then try again.")); | |
9577 | } | |
e24a49d8 | 9578 | |
c906108c SS |
9579 | /* Copy the packet into buffer BUF2, encapsulating it |
9580 | and giving it a checksum. */ | |
9581 | ||
c906108c SS |
9582 | p = buf2; |
9583 | *p++ = '$'; | |
9584 | ||
9585 | for (i = 0; i < cnt; i++) | |
9586 | { | |
9587 | csum += buf[i]; | |
9588 | *p++ = buf[i]; | |
9589 | } | |
9590 | *p++ = '#'; | |
9591 | *p++ = tohex ((csum >> 4) & 0xf); | |
9592 | *p++ = tohex (csum & 0xf); | |
9593 | ||
9594 | /* Send it over and over until we get a positive ack. */ | |
9595 | ||
9596 | while (1) | |
9597 | { | |
c906108c SS |
9598 | if (remote_debug) |
9599 | { | |
9600 | *p = '\0'; | |
b3ced9ba | 9601 | |
6f8976bf | 9602 | int len = (int) (p - buf2); |
6cc8564b LM |
9603 | int max_chars; |
9604 | ||
9605 | if (remote_packet_max_chars < 0) | |
9606 | max_chars = len; | |
9607 | else | |
9608 | max_chars = remote_packet_max_chars; | |
6f8976bf YQ |
9609 | |
9610 | std::string str | |
6cc8564b | 9611 | = escape_buffer (buf2, std::min (len, max_chars)); |
6f8976bf | 9612 | |
6cc8564b | 9613 | if (len > max_chars) |
2189c312 SM |
9614 | remote_debug_printf_nofunc |
9615 | ("Sending packet: %s [%d bytes omitted]", str.c_str (), | |
9616 | len - max_chars); | |
9617 | else | |
9618 | remote_debug_printf_nofunc ("Sending packet: %s", str.c_str ()); | |
c906108c | 9619 | } |
c33e31fd | 9620 | remote_serial_write (buf2, p - buf2); |
c906108c | 9621 | |
a6f3e723 SL |
9622 | /* If this is a no acks version of the remote protocol, send the |
9623 | packet and move on. */ | |
9624 | if (rs->noack_mode) | |
dda83cd7 | 9625 | break; |
a6f3e723 | 9626 | |
74531fed PA |
9627 | /* Read until either a timeout occurs (-2) or '+' is read. |
9628 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9629 | while (1) |
9630 | { | |
9631 | ch = readchar (remote_timeout); | |
9632 | ||
c906108c SS |
9633 | switch (ch) |
9634 | { | |
9635 | case '+': | |
2189c312 | 9636 | remote_debug_printf_nofunc ("Received Ack"); |
c906108c | 9637 | return 1; |
1216fa2c | 9638 | case '-': |
2189c312 | 9639 | remote_debug_printf_nofunc ("Received Nak"); |
a17d146e | 9640 | /* FALLTHROUGH */ |
c906108c | 9641 | case SERIAL_TIMEOUT: |
c5aa993b | 9642 | tcount++; |
c906108c | 9643 | if (tcount > 3) |
b80406ac | 9644 | return 0; |
23860348 | 9645 | break; /* Retransmit buffer. */ |
c906108c SS |
9646 | case '$': |
9647 | { | |
2189c312 | 9648 | remote_debug_printf ("Packet instead of Ack, ignoring it"); |
d6f7abdf AC |
9649 | /* It's probably an old response sent because an ACK |
9650 | was lost. Gobble up the packet and ack it so it | |
9651 | doesn't get retransmitted when we resend this | |
9652 | packet. */ | |
6d820c5c | 9653 | skip_frame (); |
c33e31fd | 9654 | remote_serial_write ("+", 1); |
23860348 | 9655 | continue; /* Now, go look for +. */ |
c906108c | 9656 | } |
74531fed PA |
9657 | |
9658 | case '%': | |
9659 | { | |
9660 | int val; | |
9661 | ||
9662 | /* If we got a notification, handle it, and go back to looking | |
9663 | for an ack. */ | |
9664 | /* We've found the start of a notification. Now | |
9665 | collect the data. */ | |
8d64371b | 9666 | val = read_frame (&rs->buf); |
74531fed PA |
9667 | if (val >= 0) |
9668 | { | |
2189c312 SM |
9669 | remote_debug_printf_nofunc |
9670 | (" Notification received: %s", | |
9671 | escape_buffer (rs->buf.data (), val).c_str ()); | |
6e5abd65 | 9672 | |
8d64371b | 9673 | handle_notification (rs->notif_state, rs->buf.data ()); |
74531fed PA |
9674 | /* We're in sync now, rewait for the ack. */ |
9675 | tcount = 0; | |
9676 | } | |
9677 | else | |
2189c312 SM |
9678 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9679 | rs->buf.data ()); | |
74531fed PA |
9680 | continue; |
9681 | } | |
9682 | /* fall-through */ | |
c906108c | 9683 | default: |
2189c312 SM |
9684 | remote_debug_printf_nofunc ("Junk: %c%s", ch & 0177, |
9685 | rs->buf.data ()); | |
c906108c SS |
9686 | continue; |
9687 | } | |
23860348 | 9688 | break; /* Here to retransmit. */ |
c906108c SS |
9689 | } |
9690 | ||
9691 | #if 0 | |
9692 | /* This is wrong. If doing a long backtrace, the user should be | |
dda83cd7 SM |
9693 | able to get out next time we call QUIT, without anything as |
9694 | violent as interrupt_query. If we want to provide a way out of | |
9695 | here without getting to the next QUIT, it should be based on | |
9696 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9697 | if (quit_flag) |
9698 | { | |
9699 | quit_flag = 0; | |
9700 | interrupt_query (); | |
9701 | } | |
9702 | #endif | |
9703 | } | |
a5c0808e | 9704 | |
a6f3e723 | 9705 | return 0; |
c906108c SS |
9706 | } |
9707 | ||
6d820c5c DJ |
9708 | /* Come here after finding the start of a frame when we expected an |
9709 | ack. Do our best to discard the rest of this packet. */ | |
9710 | ||
6b8edb51 PA |
9711 | void |
9712 | remote_target::skip_frame () | |
6d820c5c DJ |
9713 | { |
9714 | int c; | |
9715 | ||
9716 | while (1) | |
9717 | { | |
9718 | c = readchar (remote_timeout); | |
9719 | switch (c) | |
9720 | { | |
9721 | case SERIAL_TIMEOUT: | |
9722 | /* Nothing we can do. */ | |
9723 | return; | |
9724 | case '#': | |
9725 | /* Discard the two bytes of checksum and stop. */ | |
9726 | c = readchar (remote_timeout); | |
9727 | if (c >= 0) | |
9728 | c = readchar (remote_timeout); | |
9729 | ||
9730 | return; | |
9731 | case '*': /* Run length encoding. */ | |
9732 | /* Discard the repeat count. */ | |
9733 | c = readchar (remote_timeout); | |
9734 | if (c < 0) | |
9735 | return; | |
9736 | break; | |
9737 | default: | |
9738 | /* A regular character. */ | |
9739 | break; | |
9740 | } | |
9741 | } | |
9742 | } | |
9743 | ||
c906108c | 9744 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9745 | into *BUF, verifying the checksum, length, and handling run-length |
9746 | compression. NUL terminate the buffer. If there is not enough room, | |
8d64371b | 9747 | expand *BUF. |
c906108c | 9748 | |
c2d11a7d JM |
9749 | Returns -1 on error, number of characters in buffer (ignoring the |
9750 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9751 | SERIAL status indications). */ |
c2d11a7d | 9752 | |
6b8edb51 | 9753 | long |
8d64371b | 9754 | remote_target::read_frame (gdb::char_vector *buf_p) |
c906108c SS |
9755 | { |
9756 | unsigned char csum; | |
c2d11a7d | 9757 | long bc; |
c906108c | 9758 | int c; |
8d64371b | 9759 | char *buf = buf_p->data (); |
a6f3e723 | 9760 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9761 | |
9762 | csum = 0; | |
c2d11a7d | 9763 | bc = 0; |
c906108c SS |
9764 | |
9765 | while (1) | |
9766 | { | |
9767 | c = readchar (remote_timeout); | |
c906108c SS |
9768 | switch (c) |
9769 | { | |
9770 | case SERIAL_TIMEOUT: | |
2189c312 | 9771 | remote_debug_printf ("Timeout in mid-packet, retrying"); |
c2d11a7d | 9772 | return -1; |
2189c312 | 9773 | |
c906108c | 9774 | case '$': |
2189c312 | 9775 | remote_debug_printf ("Saw new packet start in middle of old one"); |
23860348 | 9776 | return -1; /* Start a new packet, count retries. */ |
2189c312 | 9777 | |
c906108c SS |
9778 | case '#': |
9779 | { | |
9780 | unsigned char pktcsum; | |
e1b09194 AC |
9781 | int check_0 = 0; |
9782 | int check_1 = 0; | |
c906108c | 9783 | |
c2d11a7d | 9784 | buf[bc] = '\0'; |
c906108c | 9785 | |
e1b09194 AC |
9786 | check_0 = readchar (remote_timeout); |
9787 | if (check_0 >= 0) | |
9788 | check_1 = readchar (remote_timeout); | |
802188a7 | 9789 | |
e1b09194 AC |
9790 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9791 | { | |
2189c312 | 9792 | remote_debug_printf ("Timeout in checksum, retrying"); |
e1b09194 AC |
9793 | return -1; |
9794 | } | |
9795 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 | 9796 | { |
2189c312 | 9797 | remote_debug_printf ("Communication error in checksum"); |
40e3f985 FN |
9798 | return -1; |
9799 | } | |
c906108c | 9800 | |
a6f3e723 SL |
9801 | /* Don't recompute the checksum; with no ack packets we |
9802 | don't have any way to indicate a packet retransmission | |
9803 | is necessary. */ | |
9804 | if (rs->noack_mode) | |
9805 | return bc; | |
9806 | ||
e1b09194 | 9807 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9808 | if (csum == pktcsum) |
dda83cd7 | 9809 | return bc; |
c906108c | 9810 | |
2189c312 SM |
9811 | remote_debug_printf |
9812 | ("Bad checksum, sentsum=0x%x, csum=0x%x, buf=%s", | |
9813 | pktcsum, csum, escape_buffer (buf, bc).c_str ()); | |
6e5abd65 | 9814 | |
c2d11a7d | 9815 | /* Number of characters in buffer ignoring trailing |
dda83cd7 | 9816 | NULL. */ |
c2d11a7d | 9817 | return -1; |
c906108c | 9818 | } |
23860348 | 9819 | case '*': /* Run length encoding. */ |
dda83cd7 | 9820 | { |
c2c6d25f | 9821 | int repeat; |
c906108c | 9822 | |
24b21115 | 9823 | csum += c; |
b4501125 AC |
9824 | c = readchar (remote_timeout); |
9825 | csum += c; | |
23860348 | 9826 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9827 | |
23860348 | 9828 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9829 | |
6d820c5c | 9830 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9831 | { |
8d64371b | 9832 | if (bc + repeat - 1 >= buf_p->size () - 1) |
6d820c5c DJ |
9833 | { |
9834 | /* Make some more room in the buffer. */ | |
8d64371b TT |
9835 | buf_p->resize (buf_p->size () + repeat); |
9836 | buf = buf_p->data (); | |
6d820c5c DJ |
9837 | } |
9838 | ||
c2d11a7d JM |
9839 | memset (&buf[bc], buf[bc - 1], repeat); |
9840 | bc += repeat; | |
c2c6d25f JM |
9841 | continue; |
9842 | } | |
9843 | ||
c2d11a7d | 9844 | buf[bc] = '\0'; |
6cb06a8c | 9845 | gdb_printf (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9846 | return -1; |
c2c6d25f | 9847 | } |
c906108c | 9848 | default: |
8d64371b | 9849 | if (bc >= buf_p->size () - 1) |
c906108c | 9850 | { |
6d820c5c | 9851 | /* Make some more room in the buffer. */ |
8d64371b TT |
9852 | buf_p->resize (buf_p->size () * 2); |
9853 | buf = buf_p->data (); | |
c906108c SS |
9854 | } |
9855 | ||
6d820c5c DJ |
9856 | buf[bc++] = c; |
9857 | csum += c; | |
9858 | continue; | |
c906108c SS |
9859 | } |
9860 | } | |
9861 | } | |
9862 | ||
ed2b7c17 TT |
9863 | /* Set this to the maximum number of seconds to wait instead of waiting forever |
9864 | in target_wait(). If this timer times out, then it generates an error and | |
9865 | the command is aborted. This replaces most of the need for timeouts in the | |
9866 | GDB test suite, and makes it possible to distinguish between a hung target | |
9867 | and one with slow communications. */ | |
9868 | ||
9869 | static int watchdog = 0; | |
9870 | static void | |
9871 | show_watchdog (struct ui_file *file, int from_tty, | |
9872 | struct cmd_list_element *c, const char *value) | |
9873 | { | |
6cb06a8c | 9874 | gdb_printf (file, _("Watchdog timer is %s.\n"), value); |
ed2b7c17 TT |
9875 | } |
9876 | ||
c906108c | 9877 | /* Read a packet from the remote machine, with error checking, and |
8d64371b TT |
9878 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9879 | FOREVER, wait forever rather than timing out; this is used (in | |
9880 | synchronous mode) to wait for a target that is is executing user | |
9881 | code to stop. */ | |
d9fcf2fb JM |
9882 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9883 | don't have to change all the calls to getpkt to deal with the | |
9884 | return value, because at the moment I don't know what the right | |
23860348 | 9885 | thing to do it for those. */ |
6b8edb51 | 9886 | |
c906108c | 9887 | void |
8d64371b | 9888 | remote_target::getpkt (gdb::char_vector *buf, int forever) |
d9fcf2fb | 9889 | { |
8d64371b | 9890 | getpkt_sane (buf, forever); |
d9fcf2fb JM |
9891 | } |
9892 | ||
9893 | ||
9894 | /* Read a packet from the remote machine, with error checking, and | |
8d64371b TT |
9895 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9896 | FOREVER, wait forever rather than timing out; this is used (in | |
9897 | synchronous mode) to wait for a target that is is executing user | |
9898 | code to stop. If FOREVER == 0, this function is allowed to time | |
9899 | out gracefully and return an indication of this to the caller. | |
9900 | Otherwise return the number of bytes read. If EXPECTING_NOTIF, | |
9901 | consider receiving a notification enough reason to return to the | |
9902 | caller. *IS_NOTIF is an output boolean that indicates whether *BUF | |
9903 | holds a notification or not (a regular packet). */ | |
74531fed | 9904 | |
6b8edb51 | 9905 | int |
8d64371b | 9906 | remote_target::getpkt_or_notif_sane_1 (gdb::char_vector *buf, |
6b8edb51 PA |
9907 | int forever, int expecting_notif, |
9908 | int *is_notif) | |
c906108c | 9909 | { |
2d717e4f | 9910 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9911 | int c; |
9912 | int tries; | |
9913 | int timeout; | |
df4b58fe | 9914 | int val = -1; |
c906108c | 9915 | |
8d64371b | 9916 | strcpy (buf->data (), "timeout"); |
c906108c SS |
9917 | |
9918 | if (forever) | |
74531fed PA |
9919 | timeout = watchdog > 0 ? watchdog : -1; |
9920 | else if (expecting_notif) | |
9921 | timeout = 0; /* There should already be a char in the buffer. If | |
9922 | not, bail out. */ | |
c906108c SS |
9923 | else |
9924 | timeout = remote_timeout; | |
9925 | ||
9926 | #define MAX_TRIES 3 | |
9927 | ||
74531fed PA |
9928 | /* Process any number of notifications, and then return when |
9929 | we get a packet. */ | |
9930 | for (;;) | |
c906108c | 9931 | { |
d9c43928 | 9932 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9933 | times. */ |
9934 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9935 | { |
74531fed PA |
9936 | /* This can loop forever if the remote side sends us |
9937 | characters continuously, but if it pauses, we'll get | |
9938 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9939 | we'll count that as a retry. | |
9940 | ||
9941 | Note that even when forever is set, we will only wait | |
9942 | forever prior to the start of a packet. After that, we | |
9943 | expect characters to arrive at a brisk pace. They should | |
9944 | show up within remote_timeout intervals. */ | |
9945 | do | |
9946 | c = readchar (timeout); | |
9947 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9948 | |
9949 | if (c == SERIAL_TIMEOUT) | |
9950 | { | |
74531fed PA |
9951 | if (expecting_notif) |
9952 | return -1; /* Don't complain, it's normal to not get | |
9953 | anything in this case. */ | |
9954 | ||
23860348 | 9955 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9956 | { |
5b6d1e4f | 9957 | remote_unpush_target (this); |
598d3636 JK |
9958 | throw_error (TARGET_CLOSE_ERROR, |
9959 | _("Watchdog timeout has expired. " | |
9960 | "Target detached.")); | |
c906108c | 9961 | } |
2189c312 SM |
9962 | |
9963 | remote_debug_printf ("Timed out."); | |
c906108c | 9964 | } |
74531fed PA |
9965 | else |
9966 | { | |
9967 | /* We've found the start of a packet or notification. | |
9968 | Now collect the data. */ | |
8d64371b | 9969 | val = read_frame (buf); |
74531fed PA |
9970 | if (val >= 0) |
9971 | break; | |
9972 | } | |
9973 | ||
c33e31fd | 9974 | remote_serial_write ("-", 1); |
c906108c | 9975 | } |
c906108c | 9976 | |
74531fed PA |
9977 | if (tries > MAX_TRIES) |
9978 | { | |
9979 | /* We have tried hard enough, and just can't receive the | |
9980 | packet/notification. Give up. */ | |
6cb06a8c | 9981 | gdb_printf (_("Ignoring packet error, continuing...\n")); |
c906108c | 9982 | |
74531fed PA |
9983 | /* Skip the ack char if we're in no-ack mode. */ |
9984 | if (!rs->noack_mode) | |
c33e31fd | 9985 | remote_serial_write ("+", 1); |
74531fed PA |
9986 | return -1; |
9987 | } | |
c906108c | 9988 | |
74531fed PA |
9989 | /* If we got an ordinary packet, return that to our caller. */ |
9990 | if (c == '$') | |
c906108c SS |
9991 | { |
9992 | if (remote_debug) | |
43e526b9 | 9993 | { |
6cc8564b LM |
9994 | int max_chars; |
9995 | ||
9996 | if (remote_packet_max_chars < 0) | |
9997 | max_chars = val; | |
9998 | else | |
9999 | max_chars = remote_packet_max_chars; | |
10000 | ||
6f8976bf | 10001 | std::string str |
8d64371b | 10002 | = escape_buffer (buf->data (), |
6cc8564b | 10003 | std::min (val, max_chars)); |
6f8976bf | 10004 | |
6cc8564b | 10005 | if (val > max_chars) |
2189c312 SM |
10006 | remote_debug_printf_nofunc |
10007 | ("Packet received: %s [%d bytes omitted]", str.c_str (), | |
10008 | val - max_chars); | |
10009 | else | |
10010 | remote_debug_printf_nofunc ("Packet received: %s", | |
10011 | str.c_str ()); | |
43e526b9 | 10012 | } |
a6f3e723 SL |
10013 | |
10014 | /* Skip the ack char if we're in no-ack mode. */ | |
10015 | if (!rs->noack_mode) | |
c33e31fd | 10016 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
10017 | if (is_notif != NULL) |
10018 | *is_notif = 0; | |
0876f84a | 10019 | return val; |
c906108c SS |
10020 | } |
10021 | ||
74531fed PA |
10022 | /* If we got a notification, handle it, and go back to looking |
10023 | for a packet. */ | |
10024 | else | |
10025 | { | |
10026 | gdb_assert (c == '%'); | |
10027 | ||
2189c312 SM |
10028 | remote_debug_printf_nofunc |
10029 | (" Notification received: %s", | |
10030 | escape_buffer (buf->data (), val).c_str ()); | |
6e5abd65 | 10031 | |
fee9eda9 YQ |
10032 | if (is_notif != NULL) |
10033 | *is_notif = 1; | |
c906108c | 10034 | |
8d64371b | 10035 | handle_notification (rs->notif_state, buf->data ()); |
c906108c | 10036 | |
74531fed | 10037 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 10038 | |
74531fed | 10039 | if (expecting_notif) |
fee9eda9 | 10040 | return val; |
74531fed PA |
10041 | } |
10042 | } | |
10043 | } | |
10044 | ||
6b8edb51 | 10045 | int |
8d64371b | 10046 | remote_target::getpkt_sane (gdb::char_vector *buf, int forever) |
74531fed | 10047 | { |
8d64371b | 10048 | return getpkt_or_notif_sane_1 (buf, forever, 0, NULL); |
74531fed PA |
10049 | } |
10050 | ||
6b8edb51 | 10051 | int |
8d64371b | 10052 | remote_target::getpkt_or_notif_sane (gdb::char_vector *buf, int forever, |
6b8edb51 | 10053 | int *is_notif) |
74531fed | 10054 | { |
8d64371b | 10055 | return getpkt_or_notif_sane_1 (buf, forever, 1, is_notif); |
c906108c | 10056 | } |
74531fed | 10057 | |
28561a65 | 10058 | /* Kill any new fork children of inferior INF that haven't been |
cbb8991c DB |
10059 | processed by follow_fork. */ |
10060 | ||
6b8edb51 | 10061 | void |
28561a65 | 10062 | remote_target::kill_new_fork_children (inferior *inf) |
cbb8991c | 10063 | { |
6b8edb51 | 10064 | remote_state *rs = get_remote_state (); |
cbb8991c | 10065 | struct notif_client *notif = ¬if_client_stop; |
cbb8991c | 10066 | |
28561a65 SM |
10067 | /* Kill the fork child threads of any threads in inferior INF that are stopped |
10068 | at a fork event. */ | |
10069 | for (thread_info *thread : inf->non_exited_threads ()) | |
cbb8991c | 10070 | { |
28561a65 | 10071 | const target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c | 10072 | |
28561a65 SM |
10073 | if (ws == nullptr) |
10074 | continue; | |
cbb8991c | 10075 | |
28561a65 SM |
10076 | int child_pid = ws->child_ptid ().pid (); |
10077 | int res = remote_vkill (child_pid); | |
10078 | ||
10079 | if (res != 0) | |
10080 | error (_("Can't kill fork child process %d"), child_pid); | |
cbb8991c DB |
10081 | } |
10082 | ||
10083 | /* Check for any pending fork events (not reported or processed yet) | |
28561a65 | 10084 | in inferior INF and kill those fork child threads as well. */ |
cbb8991c | 10085 | remote_notif_get_pending_events (notif); |
953edf2b | 10086 | for (auto &event : rs->stop_reply_queue) |
28561a65 SM |
10087 | { |
10088 | if (event->ptid.pid () != inf->pid) | |
10089 | continue; | |
953edf2b | 10090 | |
28561a65 SM |
10091 | if (!is_fork_status (event->ws.kind ())) |
10092 | continue; | |
10093 | ||
10094 | int child_pid = event->ws.child_ptid ().pid (); | |
10095 | int res = remote_vkill (child_pid); | |
10096 | ||
10097 | if (res != 0) | |
10098 | error (_("Can't kill fork child process %d"), child_pid); | |
10099 | } | |
cbb8991c DB |
10100 | } |
10101 | ||
c906108c | 10102 | \f |
8020350c DB |
10103 | /* Target hook to kill the current inferior. */ |
10104 | ||
f6ac5f3d PA |
10105 | void |
10106 | remote_target::kill () | |
43ff13b4 | 10107 | { |
8020350c | 10108 | int res = -1; |
28561a65 | 10109 | inferior *inf = find_inferior_pid (this, inferior_ptid.pid ()); |
8020350c | 10110 | struct remote_state *rs = get_remote_state (); |
0fdf84ca | 10111 | |
28561a65 SM |
10112 | gdb_assert (inf != nullptr); |
10113 | ||
8020350c | 10114 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 10115 | { |
8020350c DB |
10116 | /* If we're stopped while forking and we haven't followed yet, |
10117 | kill the child task. We need to do this before killing the | |
10118 | parent task because if this is a vfork then the parent will | |
10119 | be sleeping. */ | |
28561a65 | 10120 | kill_new_fork_children (inf); |
8020350c | 10121 | |
28561a65 | 10122 | res = remote_vkill (inf->pid); |
8020350c | 10123 | if (res == 0) |
0fdf84ca | 10124 | { |
bc1e6c81 | 10125 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
10126 | return; |
10127 | } | |
8020350c | 10128 | } |
0fdf84ca | 10129 | |
8020350c DB |
10130 | /* If we are in 'target remote' mode and we are killing the only |
10131 | inferior, then we will tell gdbserver to exit and unpush the | |
10132 | target. */ | |
10133 | if (res == -1 && !remote_multi_process_p (rs) | |
5b6d1e4f | 10134 | && number_of_live_inferiors (this) == 1) |
8020350c DB |
10135 | { |
10136 | remote_kill_k (); | |
10137 | ||
10138 | /* We've killed the remote end, we get to mourn it. If we are | |
10139 | not in extended mode, mourning the inferior also unpushes | |
10140 | remote_ops from the target stack, which closes the remote | |
10141 | connection. */ | |
bc1e6c81 | 10142 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
10143 | |
10144 | return; | |
0fdf84ca | 10145 | } |
43ff13b4 | 10146 | |
8020350c | 10147 | error (_("Can't kill process")); |
43ff13b4 JM |
10148 | } |
10149 | ||
8020350c DB |
10150 | /* Send a kill request to the target using the 'vKill' packet. */ |
10151 | ||
6b8edb51 PA |
10152 | int |
10153 | remote_target::remote_vkill (int pid) | |
82f73884 | 10154 | { |
4082afcc | 10155 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
10156 | return -1; |
10157 | ||
6b8edb51 PA |
10158 | remote_state *rs = get_remote_state (); |
10159 | ||
82f73884 | 10160 | /* Tell the remote target to detach. */ |
8d64371b | 10161 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vKill;%x", pid); |
82f73884 | 10162 | putpkt (rs->buf); |
8d64371b | 10163 | getpkt (&rs->buf, 0); |
82f73884 | 10164 | |
4082afcc PA |
10165 | switch (packet_ok (rs->buf, |
10166 | &remote_protocol_packets[PACKET_vKill])) | |
10167 | { | |
10168 | case PACKET_OK: | |
10169 | return 0; | |
10170 | case PACKET_ERROR: | |
10171 | return 1; | |
10172 | case PACKET_UNKNOWN: | |
10173 | return -1; | |
10174 | default: | |
10175 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
10176 | } | |
82f73884 PA |
10177 | } |
10178 | ||
8020350c DB |
10179 | /* Send a kill request to the target using the 'k' packet. */ |
10180 | ||
6b8edb51 PA |
10181 | void |
10182 | remote_target::remote_kill_k () | |
82f73884 | 10183 | { |
8020350c DB |
10184 | /* Catch errors so the user can quit from gdb even when we |
10185 | aren't on speaking terms with the remote system. */ | |
a70b8144 | 10186 | try |
82f73884 | 10187 | { |
82f73884 | 10188 | putpkt ("k"); |
82f73884 | 10189 | } |
230d2906 | 10190 | catch (const gdb_exception_error &ex) |
8020350c DB |
10191 | { |
10192 | if (ex.error == TARGET_CLOSE_ERROR) | |
10193 | { | |
10194 | /* If we got an (EOF) error that caused the target | |
10195 | to go away, then we're done, that's what we wanted. | |
10196 | "k" is susceptible to cause a premature EOF, given | |
10197 | that the remote server isn't actually required to | |
10198 | reply to "k", and it can happen that it doesn't | |
10199 | even get to reply ACK to the "k". */ | |
10200 | return; | |
10201 | } | |
82f73884 | 10202 | |
8020350c DB |
10203 | /* Otherwise, something went wrong. We didn't actually kill |
10204 | the target. Just propagate the exception, and let the | |
10205 | user or higher layers decide what to do. */ | |
eedc3f4f | 10206 | throw; |
8020350c | 10207 | } |
82f73884 PA |
10208 | } |
10209 | ||
f6ac5f3d PA |
10210 | void |
10211 | remote_target::mourn_inferior () | |
c906108c | 10212 | { |
8020350c | 10213 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 10214 | |
9607784a PA |
10215 | /* We're no longer interested in notification events of an inferior |
10216 | that exited or was killed/detached. */ | |
10217 | discard_pending_stop_replies (current_inferior ()); | |
10218 | ||
8020350c | 10219 | /* In 'target remote' mode with one inferior, we close the connection. */ |
5b6d1e4f | 10220 | if (!rs->extended && number_of_live_inferiors (this) <= 1) |
8020350c | 10221 | { |
5b6d1e4f | 10222 | remote_unpush_target (this); |
8020350c DB |
10223 | return; |
10224 | } | |
c906108c | 10225 | |
e24a49d8 PA |
10226 | /* In case we got here due to an error, but we're going to stay |
10227 | connected. */ | |
10228 | rs->waiting_for_stop_reply = 0; | |
10229 | ||
dc1981d7 PA |
10230 | /* If the current general thread belonged to the process we just |
10231 | detached from or has exited, the remote side current general | |
10232 | thread becomes undefined. Considering a case like this: | |
10233 | ||
10234 | - We just got here due to a detach. | |
10235 | - The process that we're detaching from happens to immediately | |
10236 | report a global breakpoint being hit in non-stop mode, in the | |
10237 | same thread we had selected before. | |
10238 | - GDB attaches to this process again. | |
10239 | - This event happens to be the next event we handle. | |
10240 | ||
10241 | GDB would consider that the current general thread didn't need to | |
10242 | be set on the stub side (with Hg), since for all it knew, | |
10243 | GENERAL_THREAD hadn't changed. | |
10244 | ||
10245 | Notice that although in all-stop mode, the remote server always | |
10246 | sets the current thread to the thread reporting the stop event, | |
10247 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
10248 | not* change the current thread when reporting a breakpoint hit, | |
10249 | due to the decoupling of event reporting and event handling. | |
10250 | ||
10251 | To keep things simple, we always invalidate our notion of the | |
10252 | current thread. */ | |
47f8a51d | 10253 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 10254 | |
8020350c | 10255 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 | 10256 | generic_mourn_inferior (); |
2d717e4f | 10257 | } |
c906108c | 10258 | |
57810aa7 | 10259 | bool |
f6ac5f3d | 10260 | extended_remote_target::supports_disable_randomization () |
03583c20 | 10261 | { |
4082afcc | 10262 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
10263 | } |
10264 | ||
6b8edb51 PA |
10265 | void |
10266 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
10267 | { |
10268 | struct remote_state *rs = get_remote_state (); | |
10269 | char *reply; | |
10270 | ||
8d64371b TT |
10271 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
10272 | "QDisableRandomization:%x", val); | |
03583c20 | 10273 | putpkt (rs->buf); |
b6bb3468 | 10274 | reply = remote_get_noisy_reply (); |
03583c20 UW |
10275 | if (*reply == '\0') |
10276 | error (_("Target does not support QDisableRandomization.")); | |
10277 | if (strcmp (reply, "OK") != 0) | |
10278 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
10279 | } | |
10280 | ||
6b8edb51 PA |
10281 | int |
10282 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
10283 | { |
10284 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 10285 | int len; |
94585166 | 10286 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 10287 | |
2d717e4f DJ |
10288 | /* If the user has disabled vRun support, or we have detected that |
10289 | support is not available, do not try it. */ | |
4082afcc | 10290 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 10291 | return -1; |
424163ea | 10292 | |
8d64371b TT |
10293 | strcpy (rs->buf.data (), "vRun;"); |
10294 | len = strlen (rs->buf.data ()); | |
c906108c | 10295 | |
2d717e4f DJ |
10296 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
10297 | error (_("Remote file name too long for run packet")); | |
8d64371b | 10298 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf.data () + len, |
9f1b45b0 | 10299 | strlen (remote_exec_file)); |
2d717e4f | 10300 | |
7c5ded6a | 10301 | if (!args.empty ()) |
2d717e4f | 10302 | { |
2d717e4f | 10303 | int i; |
2d717e4f | 10304 | |
773a1edc | 10305 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
10306 | for (i = 0; argv[i] != NULL; i++) |
10307 | { | |
10308 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
10309 | error (_("Argument list too long for run packet")); | |
10310 | rs->buf[len++] = ';'; | |
8d64371b | 10311 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf.data () + len, |
9f1b45b0 | 10312 | strlen (argv[i])); |
2d717e4f | 10313 | } |
2d717e4f DJ |
10314 | } |
10315 | ||
10316 | rs->buf[len++] = '\0'; | |
10317 | ||
10318 | putpkt (rs->buf); | |
8d64371b | 10319 | getpkt (&rs->buf, 0); |
2d717e4f | 10320 | |
4082afcc | 10321 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 10322 | { |
4082afcc | 10323 | case PACKET_OK: |
3405876a | 10324 | /* We have a wait response. All is well. */ |
2d717e4f | 10325 | return 0; |
4082afcc PA |
10326 | case PACKET_UNKNOWN: |
10327 | return -1; | |
10328 | case PACKET_ERROR: | |
2d717e4f DJ |
10329 | if (remote_exec_file[0] == '\0') |
10330 | error (_("Running the default executable on the remote target failed; " | |
10331 | "try \"set remote exec-file\"?")); | |
10332 | else | |
10333 | error (_("Running \"%s\" on the remote target failed"), | |
10334 | remote_exec_file); | |
4082afcc | 10335 | default: |
557b4d76 | 10336 | gdb_assert_not_reached ("bad switch"); |
2d717e4f | 10337 | } |
c906108c SS |
10338 | } |
10339 | ||
0a2dde4a SDJ |
10340 | /* Helper function to send set/unset environment packets. ACTION is |
10341 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
10342 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
10343 | sent. */ | |
10344 | ||
6b8edb51 PA |
10345 | void |
10346 | remote_target::send_environment_packet (const char *action, | |
10347 | const char *packet, | |
10348 | const char *value) | |
0a2dde4a | 10349 | { |
6b8edb51 PA |
10350 | remote_state *rs = get_remote_state (); |
10351 | ||
0a2dde4a SDJ |
10352 | /* Convert the environment variable to an hex string, which |
10353 | is the best format to be transmitted over the wire. */ | |
10354 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
10355 | strlen (value)); | |
10356 | ||
8d64371b | 10357 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
0a2dde4a SDJ |
10358 | "%s:%s", packet, encoded_value.c_str ()); |
10359 | ||
10360 | putpkt (rs->buf); | |
8d64371b TT |
10361 | getpkt (&rs->buf, 0); |
10362 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10363 | warning (_("Unable to %s environment variable '%s' on remote."), |
10364 | action, value); | |
10365 | } | |
10366 | ||
10367 | /* Helper function to handle the QEnvironment* packets. */ | |
10368 | ||
6b8edb51 PA |
10369 | void |
10370 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 10371 | { |
6b8edb51 PA |
10372 | remote_state *rs = get_remote_state (); |
10373 | ||
0a2dde4a SDJ |
10374 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
10375 | { | |
10376 | putpkt ("QEnvironmentReset"); | |
8d64371b TT |
10377 | getpkt (&rs->buf, 0); |
10378 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10379 | warning (_("Unable to reset environment on remote.")); |
10380 | } | |
10381 | ||
10382 | gdb_environ *e = ¤t_inferior ()->environment; | |
10383 | ||
10384 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
10385 | for (const std::string &el : e->user_set_env ()) | |
6b8edb51 | 10386 | send_environment_packet ("set", "QEnvironmentHexEncoded", |
0a2dde4a SDJ |
10387 | el.c_str ()); |
10388 | ||
10389 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
10390 | for (const std::string &el : e->user_unset_env ()) | |
6b8edb51 | 10391 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
10392 | } |
10393 | ||
bc3b087d SDJ |
10394 | /* Helper function to set the current working directory for the |
10395 | inferior in the remote target. */ | |
10396 | ||
6b8edb51 PA |
10397 | void |
10398 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d SDJ |
10399 | { |
10400 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
10401 | { | |
11bd012e | 10402 | const std::string &inferior_cwd = current_inferior ()->cwd (); |
6b8edb51 | 10403 | remote_state *rs = get_remote_state (); |
bc3b087d | 10404 | |
11bd012e | 10405 | if (!inferior_cwd.empty ()) |
bc3b087d | 10406 | { |
11bd012e SM |
10407 | std::string hexpath |
10408 | = bin2hex ((const gdb_byte *) inferior_cwd.data (), | |
10409 | inferior_cwd.size ()); | |
bc3b087d | 10410 | |
8d64371b | 10411 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10412 | "QSetWorkingDir:%s", hexpath.c_str ()); |
10413 | } | |
10414 | else | |
10415 | { | |
10416 | /* An empty inferior_cwd means that the user wants us to | |
10417 | reset the remote server's inferior's cwd. */ | |
8d64371b | 10418 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10419 | "QSetWorkingDir:"); |
10420 | } | |
10421 | ||
10422 | putpkt (rs->buf); | |
8d64371b | 10423 | getpkt (&rs->buf, 0); |
bc3b087d SDJ |
10424 | if (packet_ok (rs->buf, |
10425 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
10426 | != PACKET_OK) | |
10427 | error (_("\ | |
10428 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10429 | directory: %s"), | |
8d64371b | 10430 | rs->buf.data ()); |
bc3b087d SDJ |
10431 | |
10432 | } | |
10433 | } | |
10434 | ||
2d717e4f DJ |
10435 | /* In the extended protocol we want to be able to do things like |
10436 | "run" and have them basically work as expected. So we need | |
10437 | a special create_inferior function. We support changing the | |
10438 | executable file and the command line arguments, but not the | |
10439 | environment. */ | |
10440 | ||
f6ac5f3d PA |
10441 | void |
10442 | extended_remote_target::create_inferior (const char *exec_file, | |
10443 | const std::string &args, | |
10444 | char **env, int from_tty) | |
43ff13b4 | 10445 | { |
3405876a PA |
10446 | int run_worked; |
10447 | char *stop_reply; | |
10448 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10449 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10450 | |
43ff13b4 | 10451 | /* If running asynchronously, register the target file descriptor |
23860348 | 10452 | with the event loop. */ |
75c99385 | 10453 | if (target_can_async_p ()) |
4a570176 | 10454 | target_async (true); |
43ff13b4 | 10455 | |
03583c20 | 10456 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10457 | if (supports_disable_randomization ()) |
03583c20 UW |
10458 | extended_remote_disable_randomization (disable_randomization); |
10459 | ||
aefd8b33 SDJ |
10460 | /* If startup-with-shell is on, we inform gdbserver to start the |
10461 | remote inferior using a shell. */ | |
10462 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
10463 | { | |
8d64371b | 10464 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
aefd8b33 SDJ |
10465 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); |
10466 | putpkt (rs->buf); | |
8d64371b TT |
10467 | getpkt (&rs->buf, 0); |
10468 | if (strcmp (rs->buf.data (), "OK") != 0) | |
aefd8b33 SDJ |
10469 | error (_("\ |
10470 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
8d64371b | 10471 | rs->buf.data ()); |
aefd8b33 SDJ |
10472 | } |
10473 | ||
6b8edb51 | 10474 | extended_remote_environment_support (); |
0a2dde4a | 10475 | |
6b8edb51 | 10476 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10477 | |
43ff13b4 | 10478 | /* Now restart the remote server. */ |
3405876a PA |
10479 | run_worked = extended_remote_run (args) != -1; |
10480 | if (!run_worked) | |
2d717e4f DJ |
10481 | { |
10482 | /* vRun was not supported. Fail if we need it to do what the | |
10483 | user requested. */ | |
10484 | if (remote_exec_file[0]) | |
10485 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10486 | if (!args.empty ()) |
65e65158 | 10487 | error (_("Remote target does not support \"set args\" or run ARGS")); |
43ff13b4 | 10488 | |
2d717e4f DJ |
10489 | /* Fall back to "R". */ |
10490 | extended_remote_restart (); | |
10491 | } | |
424163ea | 10492 | |
3405876a | 10493 | /* vRun's success return is a stop reply. */ |
8d64371b | 10494 | stop_reply = run_worked ? rs->buf.data () : NULL; |
3405876a | 10495 | add_current_inferior_and_thread (stop_reply); |
c0a2216e | 10496 | |
2d717e4f DJ |
10497 | /* Get updated offsets, if the stub uses qOffsets. */ |
10498 | get_offsets (); | |
2d717e4f | 10499 | } |
c906108c | 10500 | \f |
c5aa993b | 10501 | |
b775012e LM |
10502 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10503 | the list of conditions (in agent expression bytecode format), if any, the | |
10504 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10505 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10506 | |
10507 | static int | |
10508 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10509 | struct bp_target_info *bp_tgt, char *buf, |
10510 | char *buf_end) | |
b775012e | 10511 | { |
3cde5c42 | 10512 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10513 | return 0; |
10514 | ||
10515 | buf += strlen (buf); | |
bba74b36 | 10516 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10517 | buf++; |
10518 | ||
83621223 | 10519 | /* Send conditions to the target. */ |
d538e36d | 10520 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10521 | { |
bba74b36 | 10522 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10523 | buf += strlen (buf); |
3cde5c42 | 10524 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10525 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10526 | *buf = '\0'; | |
10527 | } | |
b775012e LM |
10528 | return 0; |
10529 | } | |
10530 | ||
d3ce09f5 SS |
10531 | static void |
10532 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10533 | struct bp_target_info *bp_tgt, char *buf) | |
10534 | { | |
3cde5c42 | 10535 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10536 | return; |
10537 | ||
10538 | buf += strlen (buf); | |
10539 | ||
10540 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10541 | buf += strlen (buf); | |
10542 | ||
10543 | /* Concatenate all the agent expressions that are commands into the | |
10544 | cmds parameter. */ | |
df97be55 | 10545 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10546 | { |
10547 | sprintf (buf, "X%x,", aexpr->len); | |
10548 | buf += strlen (buf); | |
3cde5c42 | 10549 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10550 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10551 | *buf = '\0'; | |
10552 | } | |
d3ce09f5 SS |
10553 | } |
10554 | ||
8181d85f DJ |
10555 | /* Insert a breakpoint. On targets that have software breakpoint |
10556 | support, we ask the remote target to do the work; on targets | |
10557 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10558 | |
f6ac5f3d PA |
10559 | int |
10560 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10561 | struct bp_target_info *bp_tgt) | |
c906108c | 10562 | { |
d471ea57 AC |
10563 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10564 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10565 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10566 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10567 | |
4082afcc | 10568 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10569 | { |
0d5ed153 | 10570 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10571 | struct remote_state *rs; |
bba74b36 | 10572 | char *p, *endbuf; |
4fff2411 | 10573 | |
28439a30 PA |
10574 | /* Make sure the remote is pointing at the right process, if |
10575 | necessary. */ | |
10576 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10577 | set_general_process (); | |
10578 | ||
4fff2411 | 10579 | rs = get_remote_state (); |
8d64371b TT |
10580 | p = rs->buf.data (); |
10581 | endbuf = p + get_remote_packet_size (); | |
802188a7 | 10582 | |
96baa820 JM |
10583 | *(p++) = 'Z'; |
10584 | *(p++) = '0'; | |
10585 | *(p++) = ','; | |
7c0f6dcc | 10586 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10587 | p += hexnumstr (p, addr); |
579c6ad9 | 10588 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10589 | |
f6ac5f3d | 10590 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10591 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10592 | |
f6ac5f3d | 10593 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10594 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10595 | ||
6d820c5c | 10596 | putpkt (rs->buf); |
8d64371b | 10597 | getpkt (&rs->buf, 0); |
96baa820 | 10598 | |
6d820c5c | 10599 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10600 | { |
d471ea57 AC |
10601 | case PACKET_ERROR: |
10602 | return -1; | |
10603 | case PACKET_OK: | |
10604 | return 0; | |
10605 | case PACKET_UNKNOWN: | |
10606 | break; | |
96baa820 JM |
10607 | } |
10608 | } | |
c906108c | 10609 | |
0000e5cc PA |
10610 | /* If this breakpoint has target-side commands but this stub doesn't |
10611 | support Z0 packets, throw error. */ | |
3cde5c42 | 10612 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10613 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10614 | Target doesn't support breakpoints that have target side commands.")); | |
10615 | ||
f6ac5f3d | 10616 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10617 | } |
10618 | ||
f6ac5f3d PA |
10619 | int |
10620 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10621 | struct bp_target_info *bp_tgt, | |
10622 | enum remove_bp_reason reason) | |
c906108c | 10623 | { |
8181d85f | 10624 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10625 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10626 | |
4082afcc | 10627 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10628 | { |
8d64371b TT |
10629 | char *p = rs->buf.data (); |
10630 | char *endbuf = p + get_remote_packet_size (); | |
802188a7 | 10631 | |
28439a30 PA |
10632 | /* Make sure the remote is pointing at the right process, if |
10633 | necessary. */ | |
10634 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10635 | set_general_process (); | |
10636 | ||
96baa820 JM |
10637 | *(p++) = 'z'; |
10638 | *(p++) = '0'; | |
10639 | *(p++) = ','; | |
10640 | ||
8181d85f DJ |
10641 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10642 | p += hexnumstr (p, addr); | |
579c6ad9 | 10643 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10644 | |
6d820c5c | 10645 | putpkt (rs->buf); |
8d64371b | 10646 | getpkt (&rs->buf, 0); |
96baa820 | 10647 | |
6d820c5c | 10648 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10649 | } |
10650 | ||
f6ac5f3d | 10651 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10652 | } |
10653 | ||
f486487f | 10654 | static enum Z_packet_type |
d471ea57 AC |
10655 | watchpoint_to_Z_packet (int type) |
10656 | { | |
10657 | switch (type) | |
10658 | { | |
10659 | case hw_write: | |
bb858e6a | 10660 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10661 | break; |
10662 | case hw_read: | |
bb858e6a | 10663 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10664 | break; |
10665 | case hw_access: | |
bb858e6a | 10666 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10667 | break; |
10668 | default: | |
8e65ff28 | 10669 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10670 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10671 | } |
10672 | } | |
10673 | ||
f6ac5f3d PA |
10674 | int |
10675 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10676 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10677 | { |
d01949b6 | 10678 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10679 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10680 | char *p; |
d471ea57 | 10681 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10682 | |
4082afcc | 10683 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10684 | return 1; |
802188a7 | 10685 | |
28439a30 PA |
10686 | /* Make sure the remote is pointing at the right process, if |
10687 | necessary. */ | |
10688 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10689 | set_general_process (); | |
10690 | ||
8d64371b TT |
10691 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "Z%x,", packet); |
10692 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10693 | addr = remote_address_masked (addr); |
10694 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10695 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10696 | |
6d820c5c | 10697 | putpkt (rs->buf); |
8d64371b | 10698 | getpkt (&rs->buf, 0); |
96baa820 | 10699 | |
6d820c5c | 10700 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10701 | { |
10702 | case PACKET_ERROR: | |
d471ea57 | 10703 | return -1; |
85d721b8 PA |
10704 | case PACKET_UNKNOWN: |
10705 | return 1; | |
d471ea57 AC |
10706 | case PACKET_OK: |
10707 | return 0; | |
10708 | } | |
8e65ff28 | 10709 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10710 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10711 | } |
10712 | ||
57810aa7 | 10713 | bool |
f6ac5f3d PA |
10714 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10715 | CORE_ADDR start, int length) | |
283002cf MR |
10716 | { |
10717 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10718 | ||
10719 | return diff < length; | |
10720 | } | |
10721 | ||
d471ea57 | 10722 | |
f6ac5f3d PA |
10723 | int |
10724 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10725 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10726 | { |
d01949b6 | 10727 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10728 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10729 | char *p; |
d471ea57 AC |
10730 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10731 | ||
4082afcc | 10732 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10733 | return -1; |
802188a7 | 10734 | |
28439a30 PA |
10735 | /* Make sure the remote is pointing at the right process, if |
10736 | necessary. */ | |
10737 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10738 | set_general_process (); | |
10739 | ||
8d64371b TT |
10740 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "z%x,", packet); |
10741 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10742 | addr = remote_address_masked (addr); |
10743 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10744 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c | 10745 | putpkt (rs->buf); |
8d64371b | 10746 | getpkt (&rs->buf, 0); |
96baa820 | 10747 | |
6d820c5c | 10748 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10749 | { |
10750 | case PACKET_ERROR: | |
10751 | case PACKET_UNKNOWN: | |
10752 | return -1; | |
10753 | case PACKET_OK: | |
10754 | return 0; | |
10755 | } | |
8e65ff28 | 10756 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10757 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10758 | } |
10759 | ||
3c3bea1c | 10760 | |
60fcc1c3 TT |
10761 | static int remote_hw_watchpoint_limit = -1; |
10762 | static int remote_hw_watchpoint_length_limit = -1; | |
10763 | static int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 10764 | |
f6ac5f3d PA |
10765 | int |
10766 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10767 | { |
10768 | if (remote_hw_watchpoint_length_limit == 0) | |
10769 | return 0; | |
10770 | else if (remote_hw_watchpoint_length_limit < 0) | |
10771 | return 1; | |
10772 | else if (len <= remote_hw_watchpoint_length_limit) | |
10773 | return 1; | |
10774 | else | |
10775 | return 0; | |
10776 | } | |
10777 | ||
f6ac5f3d PA |
10778 | int |
10779 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10780 | { |
3c3bea1c GS |
10781 | if (type == bp_hardware_breakpoint) |
10782 | { | |
10783 | if (remote_hw_breakpoint_limit == 0) | |
10784 | return 0; | |
501eef12 AC |
10785 | else if (remote_hw_breakpoint_limit < 0) |
10786 | return 1; | |
3c3bea1c GS |
10787 | else if (cnt <= remote_hw_breakpoint_limit) |
10788 | return 1; | |
10789 | } | |
10790 | else | |
10791 | { | |
10792 | if (remote_hw_watchpoint_limit == 0) | |
10793 | return 0; | |
501eef12 AC |
10794 | else if (remote_hw_watchpoint_limit < 0) |
10795 | return 1; | |
3c3bea1c GS |
10796 | else if (ot) |
10797 | return -1; | |
10798 | else if (cnt <= remote_hw_watchpoint_limit) | |
10799 | return 1; | |
10800 | } | |
10801 | return -1; | |
10802 | } | |
10803 | ||
f7e6eed5 PA |
10804 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10805 | ||
57810aa7 | 10806 | bool |
f6ac5f3d | 10807 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10808 | { |
799a2abe | 10809 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10810 | |
799a2abe | 10811 | return (thread->priv != NULL |
7aabaf9d SM |
10812 | && (get_remote_thread_info (thread)->stop_reason |
10813 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10814 | } |
10815 | ||
10816 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10817 | remote. */ | |
10818 | ||
57810aa7 | 10819 | bool |
f6ac5f3d | 10820 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10821 | { |
f7e6eed5 PA |
10822 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10823 | } | |
10824 | ||
10825 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10826 | ||
57810aa7 | 10827 | bool |
f6ac5f3d | 10828 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10829 | { |
799a2abe | 10830 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10831 | |
799a2abe | 10832 | return (thread->priv != NULL |
7aabaf9d SM |
10833 | && (get_remote_thread_info (thread)->stop_reason |
10834 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10835 | } |
10836 | ||
10837 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10838 | remote. */ | |
10839 | ||
57810aa7 | 10840 | bool |
f6ac5f3d | 10841 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10842 | { |
f7e6eed5 PA |
10843 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10844 | } | |
10845 | ||
57810aa7 | 10846 | bool |
f6ac5f3d | 10847 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10848 | { |
799a2abe | 10849 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10850 | |
799a2abe | 10851 | return (thread->priv != NULL |
7aabaf9d SM |
10852 | && (get_remote_thread_info (thread)->stop_reason |
10853 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10854 | } |
10855 | ||
57810aa7 | 10856 | bool |
f6ac5f3d | 10857 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10858 | { |
799a2abe | 10859 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10860 | |
799a2abe | 10861 | if (thread->priv != NULL |
7aabaf9d SM |
10862 | && (get_remote_thread_info (thread)->stop_reason |
10863 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10864 | { |
7aabaf9d | 10865 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10866 | return true; |
4aa7a7f5 JJ |
10867 | } |
10868 | ||
57810aa7 | 10869 | return false; |
3c3bea1c GS |
10870 | } |
10871 | ||
10872 | ||
f6ac5f3d PA |
10873 | int |
10874 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10875 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10876 | { |
0d5ed153 | 10877 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10878 | struct remote_state *rs; |
bba74b36 | 10879 | char *p, *endbuf; |
dd61ec5c | 10880 | char *message; |
3c3bea1c | 10881 | |
4082afcc | 10882 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10883 | return -1; |
2bc416ba | 10884 | |
28439a30 PA |
10885 | /* Make sure the remote is pointing at the right process, if |
10886 | necessary. */ | |
10887 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10888 | set_general_process (); | |
10889 | ||
4fff2411 | 10890 | rs = get_remote_state (); |
8d64371b TT |
10891 | p = rs->buf.data (); |
10892 | endbuf = p + get_remote_packet_size (); | |
4fff2411 | 10893 | |
96baa820 JM |
10894 | *(p++) = 'Z'; |
10895 | *(p++) = '1'; | |
10896 | *(p++) = ','; | |
802188a7 | 10897 | |
0d5ed153 | 10898 | addr = remote_address_masked (addr); |
96baa820 | 10899 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10900 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10901 | |
f6ac5f3d | 10902 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10903 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10904 | |
f6ac5f3d | 10905 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10906 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10907 | ||
6d820c5c | 10908 | putpkt (rs->buf); |
8d64371b | 10909 | getpkt (&rs->buf, 0); |
96baa820 | 10910 | |
6d820c5c | 10911 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10912 | { |
10913 | case PACKET_ERROR: | |
dd61ec5c | 10914 | if (rs->buf[1] == '.') |
dda83cd7 SM |
10915 | { |
10916 | message = strchr (&rs->buf[2], '.'); | |
10917 | if (message) | |
10918 | error (_("Remote failure reply: %s"), message + 1); | |
10919 | } | |
dd61ec5c | 10920 | return -1; |
d471ea57 AC |
10921 | case PACKET_UNKNOWN: |
10922 | return -1; | |
10923 | case PACKET_OK: | |
10924 | return 0; | |
10925 | } | |
8e65ff28 | 10926 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10927 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10928 | } |
10929 | ||
d471ea57 | 10930 | |
f6ac5f3d PA |
10931 | int |
10932 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10933 | struct bp_target_info *bp_tgt) | |
96baa820 | 10934 | { |
8181d85f | 10935 | CORE_ADDR addr; |
d01949b6 | 10936 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
10937 | char *p = rs->buf.data (); |
10938 | char *endbuf = p + get_remote_packet_size (); | |
c8189ed1 | 10939 | |
4082afcc | 10940 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10941 | return -1; |
802188a7 | 10942 | |
28439a30 PA |
10943 | /* Make sure the remote is pointing at the right process, if |
10944 | necessary. */ | |
10945 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10946 | set_general_process (); | |
10947 | ||
96baa820 JM |
10948 | *(p++) = 'z'; |
10949 | *(p++) = '1'; | |
10950 | *(p++) = ','; | |
802188a7 | 10951 | |
8181d85f | 10952 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10953 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10954 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10955 | |
6d820c5c | 10956 | putpkt (rs->buf); |
8d64371b | 10957 | getpkt (&rs->buf, 0); |
802188a7 | 10958 | |
6d820c5c | 10959 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10960 | { |
10961 | case PACKET_ERROR: | |
10962 | case PACKET_UNKNOWN: | |
10963 | return -1; | |
10964 | case PACKET_OK: | |
10965 | return 0; | |
10966 | } | |
8e65ff28 | 10967 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10968 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10969 | } |
96baa820 | 10970 | |
4a5e7a5b PA |
10971 | /* Verify memory using the "qCRC:" request. */ |
10972 | ||
f6ac5f3d PA |
10973 | int |
10974 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
10975 | { |
10976 | struct remote_state *rs = get_remote_state (); | |
10977 | unsigned long host_crc, target_crc; | |
10978 | char *tmp; | |
10979 | ||
936d2992 PA |
10980 | /* It doesn't make sense to use qCRC if the remote target is |
10981 | connected but not running. */ | |
55f6301a TT |
10982 | if (target_has_execution () |
10983 | && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
936d2992 PA |
10984 | { |
10985 | enum packet_result result; | |
28439a30 | 10986 | |
936d2992 PA |
10987 | /* Make sure the remote is pointing at the right process. */ |
10988 | set_general_process (); | |
4a5e7a5b | 10989 | |
936d2992 | 10990 | /* FIXME: assumes lma can fit into long. */ |
8d64371b | 10991 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qCRC:%lx,%lx", |
936d2992 PA |
10992 | (long) lma, (long) size); |
10993 | putpkt (rs->buf); | |
4a5e7a5b | 10994 | |
936d2992 PA |
10995 | /* Be clever; compute the host_crc before waiting for target |
10996 | reply. */ | |
10997 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10998 | ||
8d64371b | 10999 | getpkt (&rs->buf, 0); |
4a5e7a5b | 11000 | |
936d2992 PA |
11001 | result = packet_ok (rs->buf, |
11002 | &remote_protocol_packets[PACKET_qCRC]); | |
11003 | if (result == PACKET_ERROR) | |
11004 | return -1; | |
11005 | else if (result == PACKET_OK) | |
11006 | { | |
11007 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
11008 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 11009 | |
936d2992 PA |
11010 | return (host_crc == target_crc); |
11011 | } | |
11012 | } | |
4a5e7a5b | 11013 | |
f6ac5f3d | 11014 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
11015 | } |
11016 | ||
c906108c SS |
11017 | /* compare-sections command |
11018 | ||
11019 | With no arguments, compares each loadable section in the exec bfd | |
11020 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 11021 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 11022 | |
c906108c | 11023 | static void |
ac88e2de | 11024 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
11025 | { |
11026 | asection *s; | |
ce359b09 | 11027 | const char *sectname; |
c906108c SS |
11028 | bfd_size_type size; |
11029 | bfd_vma lma; | |
11030 | int matched = 0; | |
11031 | int mismatched = 0; | |
4a5e7a5b | 11032 | int res; |
95cf3b38 | 11033 | int read_only = 0; |
c906108c | 11034 | |
7e10abd1 | 11035 | if (!current_program_space->exec_bfd ()) |
8a3fe4f8 | 11036 | error (_("command cannot be used without an exec file")); |
c906108c | 11037 | |
95cf3b38 DT |
11038 | if (args != NULL && strcmp (args, "-r") == 0) |
11039 | { | |
11040 | read_only = 1; | |
11041 | args = NULL; | |
11042 | } | |
11043 | ||
7e10abd1 | 11044 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
c906108c SS |
11045 | { |
11046 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 11047 | continue; /* Skip non-loadable section. */ |
c906108c | 11048 | |
95cf3b38 DT |
11049 | if (read_only && (s->flags & SEC_READONLY) == 0) |
11050 | continue; /* Skip writeable sections */ | |
11051 | ||
fd361982 | 11052 | size = bfd_section_size (s); |
c906108c | 11053 | if (size == 0) |
0df8b418 | 11054 | continue; /* Skip zero-length section. */ |
c906108c | 11055 | |
fd361982 | 11056 | sectname = bfd_section_name (s); |
c906108c | 11057 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 11058 | continue; /* Not the section selected by user. */ |
c906108c | 11059 | |
0df8b418 | 11060 | matched = 1; /* Do this section. */ |
c906108c | 11061 | lma = s->lma; |
c906108c | 11062 | |
b80406ac | 11063 | gdb::byte_vector sectdata (size); |
7e10abd1 TT |
11064 | bfd_get_section_contents (current_program_space->exec_bfd (), s, |
11065 | sectdata.data (), 0, size); | |
c906108c | 11066 | |
b80406ac | 11067 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
11068 | |
11069 | if (res == -1) | |
5af949e3 | 11070 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
11071 | paddress (target_gdbarch (), lma), |
11072 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 11073 | |
6cb06a8c TT |
11074 | gdb_printf ("Section %s, range %s -- %s: ", sectname, |
11075 | paddress (target_gdbarch (), lma), | |
11076 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 11077 | if (res) |
6cb06a8c | 11078 | gdb_printf ("matched.\n"); |
c906108c | 11079 | else |
c5aa993b | 11080 | { |
6cb06a8c | 11081 | gdb_printf ("MIS-MATCHED!\n"); |
c5aa993b JM |
11082 | mismatched++; |
11083 | } | |
c906108c SS |
11084 | } |
11085 | if (mismatched > 0) | |
936d2992 | 11086 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 11087 | the loaded file\n")); |
c906108c | 11088 | if (args && !matched) |
6cb06a8c | 11089 | gdb_printf (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
11090 | } |
11091 | ||
0e7f50da UW |
11092 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
11093 | into remote target. The number of bytes written to the remote | |
11094 | target is returned, or -1 for error. */ | |
11095 | ||
6b8edb51 PA |
11096 | target_xfer_status |
11097 | remote_target::remote_write_qxfer (const char *object_name, | |
11098 | const char *annex, const gdb_byte *writebuf, | |
11099 | ULONGEST offset, LONGEST len, | |
11100 | ULONGEST *xfered_len, | |
11101 | struct packet_config *packet) | |
0e7f50da UW |
11102 | { |
11103 | int i, buf_len; | |
11104 | ULONGEST n; | |
0e7f50da UW |
11105 | struct remote_state *rs = get_remote_state (); |
11106 | int max_size = get_memory_write_packet_size (); | |
11107 | ||
7cc244de | 11108 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 11109 | return TARGET_XFER_E_IO; |
0e7f50da UW |
11110 | |
11111 | /* Insert header. */ | |
8d64371b | 11112 | i = snprintf (rs->buf.data (), max_size, |
0e7f50da UW |
11113 | "qXfer:%s:write:%s:%s:", |
11114 | object_name, annex ? annex : "", | |
11115 | phex_nz (offset, sizeof offset)); | |
11116 | max_size -= (i + 1); | |
11117 | ||
11118 | /* Escape as much data as fits into rs->buf. */ | |
11119 | buf_len = remote_escape_output | |
8d64371b | 11120 | (writebuf, len, 1, (gdb_byte *) rs->buf.data () + i, &max_size, max_size); |
0e7f50da | 11121 | |
8d64371b TT |
11122 | if (putpkt_binary (rs->buf.data (), i + buf_len) < 0 |
11123 | || getpkt_sane (&rs->buf, 0) < 0 | |
0e7f50da | 11124 | || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 11125 | return TARGET_XFER_E_IO; |
0e7f50da | 11126 | |
8d64371b | 11127 | unpack_varlen_hex (rs->buf.data (), &n); |
9b409511 YQ |
11128 | |
11129 | *xfered_len = n; | |
92ffd475 | 11130 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
11131 | } |
11132 | ||
0876f84a DJ |
11133 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
11134 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
11135 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
11136 | The number of bytes read may be less than LEN without indicating an | |
11137 | EOF. PACKET is checked and updated to indicate whether the remote | |
11138 | target supports this object. */ | |
11139 | ||
6b8edb51 PA |
11140 | target_xfer_status |
11141 | remote_target::remote_read_qxfer (const char *object_name, | |
11142 | const char *annex, | |
11143 | gdb_byte *readbuf, ULONGEST offset, | |
11144 | LONGEST len, | |
11145 | ULONGEST *xfered_len, | |
11146 | struct packet_config *packet) | |
0876f84a | 11147 | { |
0876f84a | 11148 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
11149 | LONGEST i, n, packet_len; |
11150 | ||
7cc244de | 11151 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 11152 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11153 | |
11154 | /* Check whether we've cached an end-of-object packet that matches | |
11155 | this request. */ | |
8e88304f | 11156 | if (rs->finished_object) |
0876f84a | 11157 | { |
8e88304f TT |
11158 | if (strcmp (object_name, rs->finished_object) == 0 |
11159 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
11160 | && offset == rs->finished_offset) | |
9b409511 YQ |
11161 | return TARGET_XFER_EOF; |
11162 | ||
0876f84a DJ |
11163 | |
11164 | /* Otherwise, we're now reading something different. Discard | |
11165 | the cache. */ | |
8e88304f TT |
11166 | xfree (rs->finished_object); |
11167 | xfree (rs->finished_annex); | |
11168 | rs->finished_object = NULL; | |
11169 | rs->finished_annex = NULL; | |
0876f84a DJ |
11170 | } |
11171 | ||
11172 | /* Request only enough to fit in a single packet. The actual data | |
11173 | may not, since we don't know how much of it will need to be escaped; | |
11174 | the target is free to respond with slightly less data. We subtract | |
11175 | five to account for the response type and the protocol frame. */ | |
768adc05 | 11176 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
8d64371b TT |
11177 | snprintf (rs->buf.data (), get_remote_packet_size () - 4, |
11178 | "qXfer:%s:read:%s:%s,%s", | |
0876f84a DJ |
11179 | object_name, annex ? annex : "", |
11180 | phex_nz (offset, sizeof offset), | |
11181 | phex_nz (n, sizeof n)); | |
11182 | i = putpkt (rs->buf); | |
11183 | if (i < 0) | |
2ed4b548 | 11184 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11185 | |
11186 | rs->buf[0] = '\0'; | |
8d64371b | 11187 | packet_len = getpkt_sane (&rs->buf, 0); |
0876f84a | 11188 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 11189 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11190 | |
11191 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8d64371b | 11192 | error (_("Unknown remote qXfer reply: %s"), rs->buf.data ()); |
0876f84a DJ |
11193 | |
11194 | /* 'm' means there is (or at least might be) more data after this | |
11195 | batch. That does not make sense unless there's at least one byte | |
11196 | of data in this reply. */ | |
11197 | if (rs->buf[0] == 'm' && packet_len == 1) | |
11198 | error (_("Remote qXfer reply contained no data.")); | |
11199 | ||
11200 | /* Got some data. */ | |
8d64371b | 11201 | i = remote_unescape_input ((gdb_byte *) rs->buf.data () + 1, |
bc20a4af | 11202 | packet_len - 1, readbuf, n); |
0876f84a DJ |
11203 | |
11204 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
11205 | or possibly empty. If we have the final block of a non-empty |
11206 | object, record this fact to bypass a subsequent partial read. */ | |
11207 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 11208 | { |
8e88304f TT |
11209 | rs->finished_object = xstrdup (object_name); |
11210 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
11211 | rs->finished_offset = offset + i; | |
0876f84a DJ |
11212 | } |
11213 | ||
9b409511 YQ |
11214 | if (i == 0) |
11215 | return TARGET_XFER_EOF; | |
11216 | else | |
11217 | { | |
11218 | *xfered_len = i; | |
11219 | return TARGET_XFER_OK; | |
11220 | } | |
0876f84a DJ |
11221 | } |
11222 | ||
f6ac5f3d PA |
11223 | enum target_xfer_status |
11224 | remote_target::xfer_partial (enum target_object object, | |
11225 | const char *annex, gdb_byte *readbuf, | |
11226 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
11227 | ULONGEST *xfered_len) | |
c906108c | 11228 | { |
82f73884 | 11229 | struct remote_state *rs; |
c906108c | 11230 | int i; |
6d820c5c | 11231 | char *p2; |
1e3ff5ad | 11232 | char query_type; |
124e13d9 | 11233 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 11234 | |
e6e4e701 | 11235 | set_remote_traceframe (); |
82f73884 PA |
11236 | set_general_thread (inferior_ptid); |
11237 | ||
11238 | rs = get_remote_state (); | |
11239 | ||
b2182ed2 | 11240 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
11241 | if (object == TARGET_OBJECT_MEMORY) |
11242 | { | |
2d717e4f DJ |
11243 | /* If the remote target is connected but not running, we should |
11244 | pass this request down to a lower stratum (e.g. the executable | |
11245 | file). */ | |
55f6301a | 11246 | if (!target_has_execution ()) |
9b409511 | 11247 | return TARGET_XFER_EOF; |
2d717e4f | 11248 | |
21e3b9b9 | 11249 | if (writebuf != NULL) |
124e13d9 SM |
11250 | return remote_write_bytes (offset, writebuf, len, unit_size, |
11251 | xfered_len); | |
21e3b9b9 | 11252 | else |
6b8edb51 | 11253 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 11254 | xfered_len); |
21e3b9b9 DJ |
11255 | } |
11256 | ||
4aa995e1 PA |
11257 | /* Handle extra signal info using qxfer packets. */ |
11258 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
11259 | { | |
11260 | if (readbuf) | |
f6ac5f3d | 11261 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 11262 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
11263 | [PACKET_qXfer_siginfo_read]); |
11264 | else | |
f6ac5f3d | 11265 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 11266 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
11267 | &remote_protocol_packets |
11268 | [PACKET_qXfer_siginfo_write]); | |
11269 | } | |
11270 | ||
0fb4aa4b PA |
11271 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
11272 | { | |
11273 | if (readbuf) | |
f6ac5f3d | 11274 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 11275 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
11276 | &remote_protocol_packets |
11277 | [PACKET_qXfer_statictrace_read]); | |
11278 | else | |
2ed4b548 | 11279 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
11280 | } |
11281 | ||
a76d924d DJ |
11282 | /* Only handle flash writes. */ |
11283 | if (writebuf != NULL) | |
11284 | { | |
a76d924d DJ |
11285 | switch (object) |
11286 | { | |
11287 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 11288 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 11289 | writebuf); |
a76d924d DJ |
11290 | |
11291 | default: | |
2ed4b548 | 11292 | return TARGET_XFER_E_IO; |
a76d924d DJ |
11293 | } |
11294 | } | |
4b8a223f | 11295 | |
1e3ff5ad AC |
11296 | /* Map pre-existing objects onto letters. DO NOT do this for new |
11297 | objects!!! Instead specify new query packets. */ | |
11298 | switch (object) | |
c906108c | 11299 | { |
1e3ff5ad AC |
11300 | case TARGET_OBJECT_AVR: |
11301 | query_type = 'R'; | |
11302 | break; | |
802188a7 RM |
11303 | |
11304 | case TARGET_OBJECT_AUXV: | |
0876f84a | 11305 | gdb_assert (annex == NULL); |
f6ac5f3d | 11306 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 11307 | xfered_len, |
0876f84a | 11308 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 11309 | |
23181151 DJ |
11310 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
11311 | return remote_read_qxfer | |
f6ac5f3d | 11312 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
11313 | &remote_protocol_packets[PACKET_qXfer_features]); |
11314 | ||
cfa9d6d9 DJ |
11315 | case TARGET_OBJECT_LIBRARIES: |
11316 | return remote_read_qxfer | |
f6ac5f3d | 11317 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
11318 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
11319 | ||
2268b414 JK |
11320 | case TARGET_OBJECT_LIBRARIES_SVR4: |
11321 | return remote_read_qxfer | |
f6ac5f3d | 11322 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
11323 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
11324 | ||
fd79ecee DJ |
11325 | case TARGET_OBJECT_MEMORY_MAP: |
11326 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11327 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 11328 | xfered_len, |
fd79ecee DJ |
11329 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
11330 | ||
07e059b5 VP |
11331 | case TARGET_OBJECT_OSDATA: |
11332 | /* Should only get here if we're connected. */ | |
5d93a237 | 11333 | gdb_assert (rs->remote_desc); |
07e059b5 | 11334 | return remote_read_qxfer |
f6ac5f3d | 11335 | ("osdata", annex, readbuf, offset, len, xfered_len, |
dda83cd7 | 11336 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
07e059b5 | 11337 | |
dc146f7c VP |
11338 | case TARGET_OBJECT_THREADS: |
11339 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11340 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 11341 | xfered_len, |
dc146f7c VP |
11342 | &remote_protocol_packets[PACKET_qXfer_threads]); |
11343 | ||
b3b9301e PA |
11344 | case TARGET_OBJECT_TRACEFRAME_INFO: |
11345 | gdb_assert (annex == NULL); | |
11346 | return remote_read_qxfer | |
f6ac5f3d | 11347 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 11348 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
11349 | |
11350 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 11351 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 11352 | xfered_len, |
78d85199 | 11353 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
11354 | |
11355 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 11356 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 11357 | xfered_len, |
169081d0 TG |
11358 | &remote_protocol_packets[PACKET_qXfer_uib]); |
11359 | ||
9accd112 | 11360 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 11361 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 11362 | xfered_len, |
dda83cd7 | 11363 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9accd112 | 11364 | |
f4abbc16 | 11365 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 11366 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
11367 | len, xfered_len, |
11368 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
11369 | ||
c78fa86a | 11370 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 11371 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
11372 | len, xfered_len, |
11373 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
11374 | ||
1e3ff5ad | 11375 | default: |
2ed4b548 | 11376 | return TARGET_XFER_E_IO; |
c906108c SS |
11377 | } |
11378 | ||
0df8b418 | 11379 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 11380 | large enough let the caller deal with it. */ |
ea9c271d | 11381 | if (len < get_remote_packet_size ()) |
2ed4b548 | 11382 | return TARGET_XFER_E_IO; |
ea9c271d | 11383 | len = get_remote_packet_size (); |
1e3ff5ad | 11384 | |
23860348 | 11385 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 11386 | if (!rs->remote_desc) |
8a3fe4f8 | 11387 | error (_("remote query is only available after target open")); |
c906108c | 11388 | |
1e3ff5ad | 11389 | gdb_assert (annex != NULL); |
4b8a223f | 11390 | gdb_assert (readbuf != NULL); |
c906108c | 11391 | |
8d64371b | 11392 | p2 = rs->buf.data (); |
c906108c SS |
11393 | *p2++ = 'q'; |
11394 | *p2++ = query_type; | |
11395 | ||
23860348 MS |
11396 | /* We used one buffer char for the remote protocol q command and |
11397 | another for the query type. As the remote protocol encapsulation | |
11398 | uses 4 chars plus one extra in case we are debugging | |
11399 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
11400 | string. */ | |
c906108c | 11401 | i = 0; |
ea9c271d | 11402 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11403 | { |
1e3ff5ad AC |
11404 | /* Bad caller may have sent forbidden characters. */ |
11405 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11406 | *p2++ = annex[i]; | |
c906108c SS |
11407 | i++; |
11408 | } | |
1e3ff5ad AC |
11409 | *p2 = '\0'; |
11410 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11411 | |
6d820c5c | 11412 | i = putpkt (rs->buf); |
c5aa993b | 11413 | if (i < 0) |
2ed4b548 | 11414 | return TARGET_XFER_E_IO; |
c906108c | 11415 | |
8d64371b TT |
11416 | getpkt (&rs->buf, 0); |
11417 | strcpy ((char *) readbuf, rs->buf.data ()); | |
c906108c | 11418 | |
9b409511 | 11419 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11420 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11421 | } |
11422 | ||
09c98b44 DB |
11423 | /* Implementation of to_get_memory_xfer_limit. */ |
11424 | ||
f6ac5f3d PA |
11425 | ULONGEST |
11426 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11427 | { |
11428 | return get_memory_write_packet_size (); | |
11429 | } | |
11430 | ||
f6ac5f3d PA |
11431 | int |
11432 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11433 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11434 | CORE_ADDR *found_addrp) | |
08388c79 | 11435 | { |
f5656ead | 11436 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
11437 | struct remote_state *rs = get_remote_state (); |
11438 | int max_size = get_memory_write_packet_size (); | |
11439 | struct packet_config *packet = | |
11440 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
11441 | /* Number of packet bytes used to encode the pattern; |
11442 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11443 | int escaped_pattern_len; |
0df8b418 | 11444 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11445 | int used_pattern_len; |
11446 | int i; | |
11447 | int found; | |
11448 | ULONGEST found_addr; | |
11449 | ||
4a72de73 TT |
11450 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
11451 | { | |
11452 | return (target_read (this, TARGET_OBJECT_MEMORY, NULL, result, addr, len) | |
11453 | == len); | |
11454 | }; | |
11455 | ||
7cc244de PA |
11456 | /* Don't go to the target if we don't have to. This is done before |
11457 | checking packet_config_support to avoid the possibility that a | |
11458 | success for this edge case means the facility works in | |
11459 | general. */ | |
08388c79 DE |
11460 | if (pattern_len > search_space_len) |
11461 | return 0; | |
11462 | if (pattern_len == 0) | |
11463 | { | |
11464 | *found_addrp = start_addr; | |
11465 | return 1; | |
11466 | } | |
11467 | ||
11468 | /* If we already know the packet isn't supported, fall back to the simple | |
11469 | way of searching memory. */ | |
11470 | ||
4082afcc | 11471 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
11472 | { |
11473 | /* Target doesn't provided special support, fall back and use the | |
11474 | standard support (copy memory and do the search here). */ | |
4a72de73 | 11475 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11476 | pattern, pattern_len, found_addrp); |
11477 | } | |
11478 | ||
28439a30 PA |
11479 | /* Make sure the remote is pointing at the right process. */ |
11480 | set_general_process (); | |
11481 | ||
08388c79 | 11482 | /* Insert header. */ |
8d64371b | 11483 | i = snprintf (rs->buf.data (), max_size, |
08388c79 | 11484 | "qSearch:memory:%s;%s;", |
5af949e3 | 11485 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11486 | phex_nz (search_space_len, sizeof (search_space_len))); |
11487 | max_size -= (i + 1); | |
11488 | ||
11489 | /* Escape as much data as fits into rs->buf. */ | |
11490 | escaped_pattern_len = | |
8d64371b TT |
11491 | remote_escape_output (pattern, pattern_len, 1, |
11492 | (gdb_byte *) rs->buf.data () + i, | |
08388c79 DE |
11493 | &used_pattern_len, max_size); |
11494 | ||
11495 | /* Bail if the pattern is too large. */ | |
11496 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11497 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 | 11498 | |
8d64371b TT |
11499 | if (putpkt_binary (rs->buf.data (), i + escaped_pattern_len) < 0 |
11500 | || getpkt_sane (&rs->buf, 0) < 0 | |
08388c79 DE |
11501 | || packet_ok (rs->buf, packet) != PACKET_OK) |
11502 | { | |
11503 | /* The request may not have worked because the command is not | |
11504 | supported. If so, fall back to the simple way. */ | |
7cc244de | 11505 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 11506 | { |
4a72de73 | 11507 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11508 | pattern, pattern_len, found_addrp); |
11509 | } | |
11510 | return -1; | |
11511 | } | |
11512 | ||
11513 | if (rs->buf[0] == '0') | |
11514 | found = 0; | |
11515 | else if (rs->buf[0] == '1') | |
11516 | { | |
11517 | found = 1; | |
11518 | if (rs->buf[1] != ',') | |
8d64371b TT |
11519 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
11520 | unpack_varlen_hex (&rs->buf[2], &found_addr); | |
08388c79 DE |
11521 | *found_addrp = found_addr; |
11522 | } | |
11523 | else | |
8d64371b | 11524 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
08388c79 DE |
11525 | |
11526 | return found; | |
11527 | } | |
11528 | ||
f6ac5f3d PA |
11529 | void |
11530 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11531 | { |
d01949b6 | 11532 | struct remote_state *rs = get_remote_state (); |
8d64371b | 11533 | char *p = rs->buf.data (); |
96baa820 | 11534 | |
5d93a237 | 11535 | if (!rs->remote_desc) |
8a3fe4f8 | 11536 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11537 | |
23860348 | 11538 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11539 | if (command == NULL) |
11540 | command = ""; | |
11541 | ||
23860348 | 11542 | /* The query prefix. */ |
8d64371b TT |
11543 | strcpy (rs->buf.data (), "qRcmd,"); |
11544 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 | 11545 | |
8d64371b | 11546 | if ((strlen (rs->buf.data ()) + strlen (command) * 2 + 8/*misc*/) |
3e43a32a | 11547 | > get_remote_packet_size ()) |
8a3fe4f8 | 11548 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11549 | |
23860348 | 11550 | /* Encode the actual command. */ |
a30bf1f1 | 11551 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11552 | |
6d820c5c | 11553 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11554 | error (_("Communication problem with target.")); |
96baa820 JM |
11555 | |
11556 | /* get/display the response */ | |
11557 | while (1) | |
11558 | { | |
2e9f7625 DJ |
11559 | char *buf; |
11560 | ||
00bf0b85 | 11561 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11562 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11563 | rs->buf[0] = '\0'; |
8d64371b | 11564 | if (getpkt_sane (&rs->buf, 0) == -1) |
dda83cd7 SM |
11565 | { |
11566 | /* Timeout. Continue to (try to) read responses. | |
11567 | This is better than stopping with an error, assuming the stub | |
11568 | is still executing the (long) monitor command. | |
11569 | If needed, the user can interrupt gdb using C-c, obtaining | |
11570 | an effect similar to stop on timeout. */ | |
11571 | continue; | |
11572 | } | |
8d64371b | 11573 | buf = rs->buf.data (); |
96baa820 | 11574 | if (buf[0] == '\0') |
8a3fe4f8 | 11575 | error (_("Target does not support this command.")); |
96baa820 JM |
11576 | if (buf[0] == 'O' && buf[1] != 'K') |
11577 | { | |
23860348 | 11578 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11579 | continue; |
11580 | } | |
11581 | if (strcmp (buf, "OK") == 0) | |
11582 | break; | |
7be570e7 | 11583 | if (strlen (buf) == 3 && buf[0] == 'E' |
d5ce6f2d | 11584 | && isxdigit (buf[1]) && isxdigit (buf[2])) |
7be570e7 | 11585 | { |
8a3fe4f8 | 11586 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11587 | } |
96baa820 JM |
11588 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11589 | { | |
11590 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11591 | |
a11ac3b3 | 11592 | gdb_putc (c, outbuf); |
96baa820 JM |
11593 | } |
11594 | break; | |
11595 | } | |
11596 | } | |
11597 | ||
f6ac5f3d PA |
11598 | std::vector<mem_region> |
11599 | remote_target::memory_map () | |
fd79ecee | 11600 | { |
a664f67e | 11601 | std::vector<mem_region> result; |
9018be22 | 11602 | gdb::optional<gdb::char_vector> text |
328d42d8 SM |
11603 | = target_read_stralloc (current_inferior ()->top_target (), |
11604 | TARGET_OBJECT_MEMORY_MAP, NULL); | |
fd79ecee DJ |
11605 | |
11606 | if (text) | |
9018be22 | 11607 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11608 | |
11609 | return result; | |
11610 | } | |
11611 | ||
e5b176f2 AB |
11612 | /* Set of callbacks used to implement the 'maint packet' command. */ |
11613 | ||
11614 | struct cli_packet_command_callbacks : public send_remote_packet_callbacks | |
c906108c | 11615 | { |
e5b176f2 AB |
11616 | /* Called before the packet is sent. BUF is the packet content before |
11617 | the protocol specific prefix, suffix, and escaping is added. */ | |
c906108c | 11618 | |
e5b176f2 AB |
11619 | void sending (gdb::array_view<const char> &buf) override |
11620 | { | |
0426ad51 | 11621 | gdb_puts ("sending: "); |
e5b176f2 | 11622 | print_packet (buf); |
0426ad51 | 11623 | gdb_puts ("\n"); |
e5b176f2 | 11624 | } |
c906108c | 11625 | |
e5b176f2 AB |
11626 | /* Called with BUF, the reply from the remote target. */ |
11627 | ||
11628 | void received (gdb::array_view<const char> &buf) override | |
11629 | { | |
0426ad51 | 11630 | gdb_puts ("received: \""); |
e5b176f2 | 11631 | print_packet (buf); |
0426ad51 | 11632 | gdb_puts ("\"\n"); |
e5b176f2 AB |
11633 | } |
11634 | ||
11635 | private: | |
11636 | ||
11637 | /* Print BUF o gdb_stdout. Any non-printable bytes in BUF are printed as | |
11638 | '\x??' with '??' replaced by the hexadecimal value of the byte. */ | |
11639 | ||
11640 | static void | |
11641 | print_packet (gdb::array_view<const char> &buf) | |
11642 | { | |
11643 | string_file stb; | |
11644 | ||
11645 | for (int i = 0; i < buf.size (); ++i) | |
11646 | { | |
11647 | gdb_byte c = buf[i]; | |
11648 | if (isprint (c)) | |
a11ac3b3 | 11649 | gdb_putc (c, &stb); |
e5b176f2 | 11650 | else |
6cb06a8c | 11651 | gdb_printf (&stb, "\\x%02x", (unsigned char) c); |
e5b176f2 AB |
11652 | } |
11653 | ||
0426ad51 | 11654 | gdb_puts (stb.string ().c_str ()); |
e5b176f2 AB |
11655 | } |
11656 | }; | |
11657 | ||
11658 | /* See remote.h. */ | |
6b8edb51 PA |
11659 | |
11660 | void | |
e5b176f2 AB |
11661 | send_remote_packet (gdb::array_view<const char> &buf, |
11662 | send_remote_packet_callbacks *callbacks) | |
6b8edb51 | 11663 | { |
e5b176f2 AB |
11664 | if (buf.size () == 0 || buf.data ()[0] == '\0') |
11665 | error (_("a remote packet must not be empty")); | |
c906108c | 11666 | |
e5b176f2 AB |
11667 | remote_target *remote = get_current_remote_target (); |
11668 | if (remote == nullptr) | |
11669 | error (_("packets can only be sent to a remote target")); | |
c906108c | 11670 | |
e5b176f2 | 11671 | callbacks->sending (buf); |
6b8edb51 | 11672 | |
e5b176f2 AB |
11673 | remote->putpkt_binary (buf.data (), buf.size ()); |
11674 | remote_state *rs = remote->get_remote_state (); | |
11675 | int bytes = remote->getpkt_sane (&rs->buf, 0); | |
11676 | ||
11677 | if (bytes < 0) | |
11678 | error (_("error while fetching packet from remote target")); | |
11679 | ||
11680 | gdb::array_view<const char> view (&rs->buf[0], bytes); | |
11681 | callbacks->received (view); | |
11682 | } | |
11683 | ||
11684 | /* Entry point for the 'maint packet' command. */ | |
11685 | ||
11686 | static void | |
11687 | cli_packet_command (const char *args, int from_tty) | |
11688 | { | |
11689 | cli_packet_command_callbacks cb; | |
11690 | gdb::array_view<const char> view | |
11691 | = gdb::make_array_view (args, args == nullptr ? 0 : strlen (args)); | |
11692 | send_remote_packet (view, &cb); | |
c906108c SS |
11693 | } |
11694 | ||
11695 | #if 0 | |
23860348 | 11696 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11697 | |
a14ed312 | 11698 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11699 | |
a14ed312 | 11700 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11701 | |
a14ed312 | 11702 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11703 | |
a14ed312 | 11704 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11705 | |
23860348 | 11706 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11707 | |
a14ed312 | 11708 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11709 | |
23860348 | 11710 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11711 | |
a14ed312 | 11712 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11713 | |
a14ed312 | 11714 | static void init_remote_threadtests (void); |
c906108c | 11715 | |
23860348 | 11716 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11717 | |
11718 | static void | |
0b39b52e | 11719 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11720 | { |
11721 | int sample_thread = SAMPLE_THREAD; | |
11722 | ||
6cb06a8c | 11723 | gdb_printf (_("Remote threadset test\n")); |
79d7f229 | 11724 | set_general_thread (sample_thread); |
c906108c SS |
11725 | } |
11726 | ||
11727 | ||
11728 | static void | |
0b39b52e | 11729 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11730 | { |
11731 | int sample_thread = SAMPLE_THREAD; | |
e99b03dc | 11732 | int pid = inferior_ptid.pid (); |
fd79271b | 11733 | ptid_t ptid = ptid_t (pid, sample_thread, 0); |
c906108c | 11734 | |
79d7f229 | 11735 | if (remote_thread_alive (ptid)) |
6cb06a8c | 11736 | gdb_printf ("PASS: Thread alive test\n"); |
c906108c | 11737 | else |
6cb06a8c | 11738 | gdb_printf ("FAIL: Thread alive test\n"); |
c906108c SS |
11739 | } |
11740 | ||
23860348 | 11741 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11742 | |
11743 | void | |
fba45db2 | 11744 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11745 | { |
11746 | char hexid[20]; | |
11747 | ||
405feb71 | 11748 | pack_threadid (&hexid[0], ref); /* Convert thread id into hex. */ |
c906108c | 11749 | hexid[16] = 0; |
6cb06a8c | 11750 | gdb_printf ("%s %s\n", title, (&hexid[0])); |
c906108c SS |
11751 | } |
11752 | ||
11753 | static void | |
0b39b52e | 11754 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11755 | { |
11756 | int startflag = 1; | |
11757 | threadref nextthread; | |
11758 | int done, result_count; | |
11759 | threadref threadlist[3]; | |
11760 | ||
6cb06a8c | 11761 | gdb_printf ("Remote Threadlist test\n"); |
c906108c SS |
11762 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, |
11763 | &result_count, &threadlist[0])) | |
6cb06a8c | 11764 | gdb_printf ("FAIL: threadlist test\n"); |
c906108c SS |
11765 | else |
11766 | { | |
11767 | threadref *scan = threadlist; | |
11768 | threadref *limit = scan + result_count; | |
11769 | ||
11770 | while (scan < limit) | |
11771 | output_threadid (" thread ", scan++); | |
11772 | } | |
11773 | } | |
11774 | ||
11775 | void | |
fba45db2 | 11776 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11777 | { |
11778 | output_threadid ("Threadid: ", &info->threadid); | |
6cb06a8c TT |
11779 | gdb_printf ("Name: %s\n ", info->shortname); |
11780 | gdb_printf ("State: %s\n", info->display); | |
11781 | gdb_printf ("other: %s\n\n", info->more_display); | |
c906108c SS |
11782 | } |
11783 | ||
11784 | int | |
fba45db2 | 11785 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11786 | { |
11787 | int result; | |
11788 | int set; | |
11789 | struct gdb_ext_thread_info threadinfo; | |
11790 | ||
11791 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11792 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11793 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11794 | display_thread_info (&threadinfo); | |
11795 | return result; | |
11796 | } | |
11797 | ||
11798 | static void | |
0b39b52e | 11799 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11800 | { |
11801 | int athread = SAMPLE_THREAD; | |
11802 | threadref thread; | |
11803 | int set; | |
11804 | ||
11805 | int_to_threadref (&thread, athread); | |
6cb06a8c | 11806 | gdb_printf ("Remote Threadinfo test\n"); |
c906108c | 11807 | if (!get_and_display_threadinfo (&thread)) |
6cb06a8c | 11808 | gdb_printf ("FAIL cannot get thread info\n"); |
c906108c SS |
11809 | } |
11810 | ||
11811 | static int | |
fba45db2 | 11812 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11813 | { |
11814 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11815 | return get_and_display_threadinfo (ref); | |
11816 | } | |
11817 | ||
11818 | static void | |
0b39b52e | 11819 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c | 11820 | { |
6cb06a8c | 11821 | gdb_printf ("Remote Threadlist update test\n"); |
c906108c SS |
11822 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); |
11823 | } | |
11824 | ||
11825 | static void | |
11826 | init_remote_threadtests (void) | |
11827 | { | |
3e43a32a MS |
11828 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11829 | _("Fetch and print the remote list of " | |
590042fc | 11830 | "thread identifiers, one pkt only.")); |
c906108c | 11831 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
590042fc | 11832 | _("Fetch and display info about one thread.")); |
c906108c | 11833 | add_com ("tset", class_obscure, threadset_test_cmd, |
590042fc | 11834 | _("Test setting to a different thread.")); |
c906108c | 11835 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
590042fc | 11836 | _("Iterate through updating all remote thread info.")); |
c906108c | 11837 | add_com ("talive", class_obscure, threadalive_test, |
590042fc | 11838 | _("Remote thread alive test.")); |
c906108c SS |
11839 | } |
11840 | ||
11841 | #endif /* 0 */ | |
11842 | ||
a068643d | 11843 | /* Convert a thread ID to a string. */ |
f3fb8c85 | 11844 | |
a068643d | 11845 | std::string |
f6ac5f3d | 11846 | remote_target::pid_to_str (ptid_t ptid) |
f3fb8c85 | 11847 | { |
82f73884 | 11848 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11849 | |
d7e15655 | 11850 | if (ptid == null_ptid) |
7cee1e54 | 11851 | return normal_pid_to_str (ptid); |
0e998d96 | 11852 | else if (ptid.is_pid ()) |
ecd0ada5 PA |
11853 | { |
11854 | /* Printing an inferior target id. */ | |
11855 | ||
11856 | /* When multi-process extensions are off, there's no way in the | |
11857 | remote protocol to know the remote process id, if there's any | |
11858 | at all. There's one exception --- when we're connected with | |
11859 | target extended-remote, and we manually attached to a process | |
11860 | with "attach PID". We don't record anywhere a flag that | |
11861 | allows us to distinguish that case from the case of | |
11862 | connecting with extended-remote and the stub already being | |
11863 | attached to a process, and reporting yes to qAttached, hence | |
11864 | no smart special casing here. */ | |
11865 | if (!remote_multi_process_p (rs)) | |
a068643d | 11866 | return "Remote target"; |
ecd0ada5 PA |
11867 | |
11868 | return normal_pid_to_str (ptid); | |
82f73884 | 11869 | } |
ecd0ada5 | 11870 | else |
79d7f229 | 11871 | { |
d7e15655 | 11872 | if (magic_null_ptid == ptid) |
a068643d | 11873 | return "Thread <main>"; |
8020350c | 11874 | else if (remote_multi_process_p (rs)) |
e38504b3 | 11875 | if (ptid.lwp () == 0) |
de0d863e DB |
11876 | return normal_pid_to_str (ptid); |
11877 | else | |
a068643d TT |
11878 | return string_printf ("Thread %d.%ld", |
11879 | ptid.pid (), ptid.lwp ()); | |
ecd0ada5 | 11880 | else |
a068643d | 11881 | return string_printf ("Thread %ld", ptid.lwp ()); |
79d7f229 | 11882 | } |
f3fb8c85 MS |
11883 | } |
11884 | ||
38691318 KB |
11885 | /* Get the address of the thread local variable in OBJFILE which is |
11886 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11887 | ||
f6ac5f3d PA |
11888 | CORE_ADDR |
11889 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11890 | CORE_ADDR offset) | |
38691318 | 11891 | { |
4082afcc | 11892 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11893 | { |
11894 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11895 | char *p = rs->buf.data (); |
11896 | char *endp = p + get_remote_packet_size (); | |
571dd617 | 11897 | enum packet_result result; |
38691318 KB |
11898 | |
11899 | strcpy (p, "qGetTLSAddr:"); | |
11900 | p += strlen (p); | |
82f73884 | 11901 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11902 | *p++ = ','; |
11903 | p += hexnumstr (p, offset); | |
11904 | *p++ = ','; | |
11905 | p += hexnumstr (p, lm); | |
11906 | *p++ = '\0'; | |
11907 | ||
6d820c5c | 11908 | putpkt (rs->buf); |
8d64371b | 11909 | getpkt (&rs->buf, 0); |
3e43a32a MS |
11910 | result = packet_ok (rs->buf, |
11911 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11912 | if (result == PACKET_OK) |
38691318 | 11913 | { |
b926417a | 11914 | ULONGEST addr; |
38691318 | 11915 | |
8d64371b | 11916 | unpack_varlen_hex (rs->buf.data (), &addr); |
b926417a | 11917 | return addr; |
38691318 | 11918 | } |
571dd617 | 11919 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11920 | throw_error (TLS_GENERIC_ERROR, |
11921 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11922 | else |
109c3e39 AC |
11923 | throw_error (TLS_GENERIC_ERROR, |
11924 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11925 | } |
11926 | else | |
109c3e39 AC |
11927 | throw_error (TLS_GENERIC_ERROR, |
11928 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11929 | /* Not reached. */ |
11930 | return 0; | |
11931 | } | |
11932 | ||
711e434b PM |
11933 | /* Provide thread local base, i.e. Thread Information Block address. |
11934 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11935 | ||
57810aa7 | 11936 | bool |
f6ac5f3d | 11937 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11938 | { |
4082afcc | 11939 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11940 | { |
11941 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11942 | char *p = rs->buf.data (); |
11943 | char *endp = p + get_remote_packet_size (); | |
711e434b PM |
11944 | enum packet_result result; |
11945 | ||
11946 | strcpy (p, "qGetTIBAddr:"); | |
11947 | p += strlen (p); | |
11948 | p = write_ptid (p, endp, ptid); | |
11949 | *p++ = '\0'; | |
11950 | ||
11951 | putpkt (rs->buf); | |
8d64371b | 11952 | getpkt (&rs->buf, 0); |
711e434b PM |
11953 | result = packet_ok (rs->buf, |
11954 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11955 | if (result == PACKET_OK) | |
11956 | { | |
b926417a | 11957 | ULONGEST val; |
8d64371b | 11958 | unpack_varlen_hex (rs->buf.data (), &val); |
711e434b | 11959 | if (addr) |
b926417a | 11960 | *addr = (CORE_ADDR) val; |
57810aa7 | 11961 | return true; |
711e434b PM |
11962 | } |
11963 | else if (result == PACKET_UNKNOWN) | |
11964 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11965 | else | |
11966 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11967 | } | |
11968 | else | |
11969 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11970 | /* Not reached. */ | |
57810aa7 | 11971 | return false; |
711e434b PM |
11972 | } |
11973 | ||
29709017 DJ |
11974 | /* Support for inferring a target description based on the current |
11975 | architecture and the size of a 'g' packet. While the 'g' packet | |
11976 | can have any size (since optional registers can be left off the | |
11977 | end), some sizes are easily recognizable given knowledge of the | |
11978 | approximate architecture. */ | |
11979 | ||
11980 | struct remote_g_packet_guess | |
11981 | { | |
eefce37f TT |
11982 | remote_g_packet_guess (int bytes_, const struct target_desc *tdesc_) |
11983 | : bytes (bytes_), | |
11984 | tdesc (tdesc_) | |
11985 | { | |
11986 | } | |
11987 | ||
29709017 DJ |
11988 | int bytes; |
11989 | const struct target_desc *tdesc; | |
11990 | }; | |
29709017 | 11991 | |
cb275538 | 11992 | struct remote_g_packet_data |
29709017 | 11993 | { |
eefce37f | 11994 | std::vector<remote_g_packet_guess> guesses; |
29709017 DJ |
11995 | }; |
11996 | ||
cb275538 TT |
11997 | static const registry<gdbarch>::key<struct remote_g_packet_data> |
11998 | remote_g_packet_data_handle; | |
29709017 | 11999 | |
cb275538 TT |
12000 | static struct remote_g_packet_data * |
12001 | get_g_packet_data (struct gdbarch *gdbarch) | |
29709017 | 12002 | { |
cb275538 TT |
12003 | struct remote_g_packet_data *data |
12004 | = remote_g_packet_data_handle.get (gdbarch); | |
12005 | if (data == nullptr) | |
12006 | data = remote_g_packet_data_handle.emplace (gdbarch); | |
12007 | return data; | |
29709017 DJ |
12008 | } |
12009 | ||
12010 | void | |
12011 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
12012 | const struct target_desc *tdesc) | |
12013 | { | |
cb275538 | 12014 | struct remote_g_packet_data *data = get_g_packet_data (gdbarch); |
29709017 DJ |
12015 | |
12016 | gdb_assert (tdesc != NULL); | |
12017 | ||
eefce37f TT |
12018 | for (const remote_g_packet_guess &guess : data->guesses) |
12019 | if (guess.bytes == bytes) | |
29709017 | 12020 | internal_error (__FILE__, __LINE__, |
9b20d036 | 12021 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
12022 | bytes); |
12023 | ||
eefce37f | 12024 | data->guesses.emplace_back (bytes, tdesc); |
29709017 DJ |
12025 | } |
12026 | ||
eefce37f TT |
12027 | /* Return true if remote_read_description would do anything on this target |
12028 | and architecture, false otherwise. */ | |
d962ef82 | 12029 | |
eefce37f | 12030 | static bool |
d962ef82 DJ |
12031 | remote_read_description_p (struct target_ops *target) |
12032 | { | |
cb275538 | 12033 | struct remote_g_packet_data *data = get_g_packet_data (target_gdbarch ()); |
d962ef82 | 12034 | |
eefce37f | 12035 | return !data->guesses.empty (); |
d962ef82 DJ |
12036 | } |
12037 | ||
f6ac5f3d PA |
12038 | const struct target_desc * |
12039 | remote_target::read_description () | |
29709017 | 12040 | { |
cb275538 | 12041 | struct remote_g_packet_data *data = get_g_packet_data (target_gdbarch ()); |
29709017 | 12042 | |
d962ef82 DJ |
12043 | /* Do not try this during initial connection, when we do not know |
12044 | whether there is a running but stopped thread. */ | |
55f6301a | 12045 | if (!target_has_execution () || inferior_ptid == null_ptid) |
b6a8c27b | 12046 | return beneath ()->read_description (); |
d962ef82 | 12047 | |
eefce37f | 12048 | if (!data->guesses.empty ()) |
29709017 | 12049 | { |
29709017 DJ |
12050 | int bytes = send_g_packet (); |
12051 | ||
eefce37f TT |
12052 | for (const remote_g_packet_guess &guess : data->guesses) |
12053 | if (guess.bytes == bytes) | |
12054 | return guess.tdesc; | |
29709017 DJ |
12055 | |
12056 | /* We discard the g packet. A minor optimization would be to | |
12057 | hold on to it, and fill the register cache once we have selected | |
12058 | an architecture, but it's too tricky to do safely. */ | |
12059 | } | |
12060 | ||
b6a8c27b | 12061 | return beneath ()->read_description (); |
29709017 DJ |
12062 | } |
12063 | ||
a6b151f1 DJ |
12064 | /* Remote file transfer support. This is host-initiated I/O, not |
12065 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
12066 | ||
12067 | /* If *LEFT is at least the length of STRING, copy STRING to | |
12068 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12069 | decrease *LEFT. Otherwise raise an error. */ | |
12070 | ||
12071 | static void | |
a121b7c1 | 12072 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
12073 | { |
12074 | int len = strlen (string); | |
12075 | ||
12076 | if (len > *left) | |
12077 | error (_("Packet too long for target.")); | |
12078 | ||
12079 | memcpy (*buffer, string, len); | |
12080 | *buffer += len; | |
12081 | *left -= len; | |
12082 | ||
12083 | /* NUL-terminate the buffer as a convenience, if there is | |
12084 | room. */ | |
12085 | if (*left) | |
12086 | **buffer = '\0'; | |
12087 | } | |
12088 | ||
12089 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
12090 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12091 | decrease *LEFT. Otherwise raise an error. */ | |
12092 | ||
12093 | static void | |
12094 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
12095 | int len) | |
12096 | { | |
12097 | if (2 * len > *left) | |
12098 | error (_("Packet too long for target.")); | |
12099 | ||
12100 | bin2hex (bytes, *buffer, len); | |
12101 | *buffer += 2 * len; | |
12102 | *left -= 2 * len; | |
12103 | ||
12104 | /* NUL-terminate the buffer as a convenience, if there is | |
12105 | room. */ | |
12106 | if (*left) | |
12107 | **buffer = '\0'; | |
12108 | } | |
12109 | ||
12110 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
12111 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
12112 | decrease *LEFT. Otherwise raise an error. */ | |
12113 | ||
12114 | static void | |
12115 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
12116 | { | |
12117 | int len = hexnumlen (value); | |
12118 | ||
12119 | if (len > *left) | |
12120 | error (_("Packet too long for target.")); | |
12121 | ||
12122 | hexnumstr (*buffer, value); | |
12123 | *buffer += len; | |
12124 | *left -= len; | |
12125 | ||
12126 | /* NUL-terminate the buffer as a convenience, if there is | |
12127 | room. */ | |
12128 | if (*left) | |
12129 | **buffer = '\0'; | |
12130 | } | |
12131 | ||
12132 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
b872057a | 12133 | value, *REMOTE_ERRNO to the remote error number or FILEIO_SUCCESS if none |
a6b151f1 DJ |
12134 | was included, and *ATTACHMENT to point to the start of the annex |
12135 | if any. The length of the packet isn't needed here; there may | |
12136 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
12137 | ||
12138 | Return 0 if the packet could be parsed, -1 if it could not. If | |
12139 | -1 is returned, the other variables may not be initialized. */ | |
12140 | ||
12141 | static int | |
aa2838cc | 12142 | remote_hostio_parse_result (const char *buffer, int *retcode, |
b872057a | 12143 | fileio_error *remote_errno, const char **attachment) |
a6b151f1 DJ |
12144 | { |
12145 | char *p, *p2; | |
12146 | ||
b872057a | 12147 | *remote_errno = FILEIO_SUCCESS; |
a6b151f1 DJ |
12148 | *attachment = NULL; |
12149 | ||
12150 | if (buffer[0] != 'F') | |
12151 | return -1; | |
12152 | ||
12153 | errno = 0; | |
12154 | *retcode = strtol (&buffer[1], &p, 16); | |
12155 | if (errno != 0 || p == &buffer[1]) | |
12156 | return -1; | |
12157 | ||
12158 | /* Check for ",errno". */ | |
12159 | if (*p == ',') | |
12160 | { | |
12161 | errno = 0; | |
b872057a | 12162 | *remote_errno = (fileio_error) strtol (p + 1, &p2, 16); |
a6b151f1 DJ |
12163 | if (errno != 0 || p + 1 == p2) |
12164 | return -1; | |
12165 | p = p2; | |
12166 | } | |
12167 | ||
12168 | /* Check for ";attachment". If there is no attachment, the | |
12169 | packet should end here. */ | |
12170 | if (*p == ';') | |
12171 | { | |
12172 | *attachment = p + 1; | |
12173 | return 0; | |
12174 | } | |
12175 | else if (*p == '\0') | |
12176 | return 0; | |
12177 | else | |
12178 | return -1; | |
12179 | } | |
12180 | ||
12181 | /* Send a prepared I/O packet to the target and read its response. | |
12182 | The prepared packet is in the global RS->BUF before this function | |
12183 | is called, and the answer is there when we return. | |
12184 | ||
12185 | COMMAND_BYTES is the length of the request to send, which may include | |
12186 | binary data. WHICH_PACKET is the packet configuration to check | |
12187 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
12188 | is set to the error number and -1 is returned. Otherwise the value | |
12189 | returned by the function is returned. | |
12190 | ||
12191 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
12192 | attachment is expected; an error will be reported if there's a | |
12193 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
12194 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
12195 | attachment's length. */ | |
12196 | ||
6b8edb51 PA |
12197 | int |
12198 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
b872057a | 12199 | fileio_error *remote_errno, const char **attachment, |
6b8edb51 | 12200 | int *attachment_len) |
a6b151f1 DJ |
12201 | { |
12202 | struct remote_state *rs = get_remote_state (); | |
12203 | int ret, bytes_read; | |
aa2838cc | 12204 | const char *attachment_tmp; |
a6b151f1 | 12205 | |
20db9c52 | 12206 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
12207 | { |
12208 | *remote_errno = FILEIO_ENOSYS; | |
12209 | return -1; | |
12210 | } | |
12211 | ||
8d64371b TT |
12212 | putpkt_binary (rs->buf.data (), command_bytes); |
12213 | bytes_read = getpkt_sane (&rs->buf, 0); | |
a6b151f1 DJ |
12214 | |
12215 | /* If it timed out, something is wrong. Don't try to parse the | |
12216 | buffer. */ | |
12217 | if (bytes_read < 0) | |
12218 | { | |
12219 | *remote_errno = FILEIO_EINVAL; | |
12220 | return -1; | |
12221 | } | |
12222 | ||
12223 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
12224 | { | |
12225 | case PACKET_ERROR: | |
12226 | *remote_errno = FILEIO_EINVAL; | |
12227 | return -1; | |
12228 | case PACKET_UNKNOWN: | |
12229 | *remote_errno = FILEIO_ENOSYS; | |
12230 | return -1; | |
12231 | case PACKET_OK: | |
12232 | break; | |
12233 | } | |
12234 | ||
8d64371b | 12235 | if (remote_hostio_parse_result (rs->buf.data (), &ret, remote_errno, |
a6b151f1 DJ |
12236 | &attachment_tmp)) |
12237 | { | |
12238 | *remote_errno = FILEIO_EINVAL; | |
12239 | return -1; | |
12240 | } | |
12241 | ||
12242 | /* Make sure we saw an attachment if and only if we expected one. */ | |
12243 | if ((attachment_tmp == NULL && attachment != NULL) | |
12244 | || (attachment_tmp != NULL && attachment == NULL)) | |
12245 | { | |
12246 | *remote_errno = FILEIO_EINVAL; | |
12247 | return -1; | |
12248 | } | |
12249 | ||
12250 | /* If an attachment was found, it must point into the packet buffer; | |
12251 | work out how many bytes there were. */ | |
12252 | if (attachment_tmp != NULL) | |
12253 | { | |
12254 | *attachment = attachment_tmp; | |
8d64371b | 12255 | *attachment_len = bytes_read - (*attachment - rs->buf.data ()); |
a6b151f1 DJ |
12256 | } |
12257 | ||
12258 | return ret; | |
12259 | } | |
12260 | ||
dd194f6b | 12261 | /* See declaration.h. */ |
80152258 | 12262 | |
dd194f6b PA |
12263 | void |
12264 | readahead_cache::invalidate () | |
80152258 | 12265 | { |
dd194f6b | 12266 | this->fd = -1; |
80152258 PA |
12267 | } |
12268 | ||
dd194f6b | 12269 | /* See declaration.h. */ |
80152258 | 12270 | |
dd194f6b PA |
12271 | void |
12272 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 12273 | { |
dd194f6b PA |
12274 | if (this->fd == fd) |
12275 | this->fd = -1; | |
80152258 PA |
12276 | } |
12277 | ||
15a201c8 GB |
12278 | /* Set the filesystem remote_hostio functions that take FILENAME |
12279 | arguments will use. Return 0 on success, or -1 if an error | |
12280 | occurs (and set *REMOTE_ERRNO). */ | |
12281 | ||
6b8edb51 PA |
12282 | int |
12283 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
b872057a | 12284 | fileio_error *remote_errno) |
15a201c8 GB |
12285 | { |
12286 | struct remote_state *rs = get_remote_state (); | |
12287 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
8d64371b | 12288 | char *p = rs->buf.data (); |
15a201c8 GB |
12289 | int left = get_remote_packet_size () - 1; |
12290 | char arg[9]; | |
12291 | int ret; | |
12292 | ||
12293 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
12294 | return 0; | |
12295 | ||
12296 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
12297 | return 0; | |
12298 | ||
12299 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
12300 | ||
12301 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
12302 | remote_buffer_add_string (&p, &left, arg); | |
12303 | ||
8d64371b | 12304 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_setfs, |
15a201c8 GB |
12305 | remote_errno, NULL, NULL); |
12306 | ||
12307 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
12308 | return 0; | |
12309 | ||
12310 | if (ret == 0) | |
12311 | rs->fs_pid = required_pid; | |
12312 | ||
12313 | return ret; | |
12314 | } | |
12315 | ||
12e2a5fd | 12316 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 12317 | |
6b8edb51 PA |
12318 | int |
12319 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
12320 | int flags, int mode, int warn_if_slow, | |
b872057a | 12321 | fileio_error *remote_errno) |
a6b151f1 DJ |
12322 | { |
12323 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12324 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12325 | int left = get_remote_packet_size () - 1; |
12326 | ||
4313b8c0 GB |
12327 | if (warn_if_slow) |
12328 | { | |
12329 | static int warning_issued = 0; | |
12330 | ||
6cb06a8c TT |
12331 | gdb_printf (_("Reading %s from remote target...\n"), |
12332 | filename); | |
4313b8c0 GB |
12333 | |
12334 | if (!warning_issued) | |
12335 | { | |
12336 | warning (_("File transfers from remote targets can be slow." | |
12337 | " Use \"set sysroot\" to access files locally" | |
12338 | " instead.")); | |
12339 | warning_issued = 1; | |
12340 | } | |
12341 | } | |
12342 | ||
15a201c8 GB |
12343 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12344 | return -1; | |
12345 | ||
a6b151f1 DJ |
12346 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
12347 | ||
12348 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12349 | strlen (filename)); | |
12350 | remote_buffer_add_string (&p, &left, ","); | |
12351 | ||
12352 | remote_buffer_add_int (&p, &left, flags); | |
12353 | remote_buffer_add_string (&p, &left, ","); | |
12354 | ||
12355 | remote_buffer_add_int (&p, &left, mode); | |
12356 | ||
8d64371b | 12357 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_open, |
a6b151f1 DJ |
12358 | remote_errno, NULL, NULL); |
12359 | } | |
12360 | ||
f6ac5f3d PA |
12361 | int |
12362 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
12363 | int flags, int mode, int warn_if_slow, | |
b872057a | 12364 | fileio_error *remote_errno) |
f6ac5f3d | 12365 | { |
6b8edb51 | 12366 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
12367 | remote_errno); |
12368 | } | |
12369 | ||
12e2a5fd | 12370 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 12371 | |
6b8edb51 PA |
12372 | int |
12373 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 12374 | ULONGEST offset, fileio_error *remote_errno) |
a6b151f1 DJ |
12375 | { |
12376 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12377 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12378 | int left = get_remote_packet_size (); |
12379 | int out_len; | |
12380 | ||
dd194f6b | 12381 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12382 | |
a6b151f1 DJ |
12383 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
12384 | ||
12385 | remote_buffer_add_int (&p, &left, fd); | |
12386 | remote_buffer_add_string (&p, &left, ","); | |
12387 | ||
12388 | remote_buffer_add_int (&p, &left, offset); | |
12389 | remote_buffer_add_string (&p, &left, ","); | |
12390 | ||
124e13d9 | 12391 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
8d64371b TT |
12392 | (get_remote_packet_size () |
12393 | - (p - rs->buf.data ()))); | |
a6b151f1 | 12394 | |
8d64371b | 12395 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pwrite, |
a6b151f1 DJ |
12396 | remote_errno, NULL, NULL); |
12397 | } | |
12398 | ||
f6ac5f3d PA |
12399 | int |
12400 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
b872057a | 12401 | ULONGEST offset, fileio_error *remote_errno) |
f6ac5f3d | 12402 | { |
6b8edb51 | 12403 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12404 | } |
12405 | ||
80152258 PA |
12406 | /* Helper for the implementation of to_fileio_pread. Read the file |
12407 | from the remote side with vFile:pread. */ | |
a6b151f1 | 12408 | |
6b8edb51 PA |
12409 | int |
12410 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
b872057a | 12411 | ULONGEST offset, fileio_error *remote_errno) |
a6b151f1 DJ |
12412 | { |
12413 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12414 | char *p = rs->buf.data (); |
aa2838cc | 12415 | const char *attachment; |
a6b151f1 DJ |
12416 | int left = get_remote_packet_size (); |
12417 | int ret, attachment_len; | |
12418 | int read_len; | |
12419 | ||
12420 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
12421 | ||
12422 | remote_buffer_add_int (&p, &left, fd); | |
12423 | remote_buffer_add_string (&p, &left, ","); | |
12424 | ||
12425 | remote_buffer_add_int (&p, &left, len); | |
12426 | remote_buffer_add_string (&p, &left, ","); | |
12427 | ||
12428 | remote_buffer_add_int (&p, &left, offset); | |
12429 | ||
8d64371b | 12430 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pread, |
a6b151f1 DJ |
12431 | remote_errno, &attachment, |
12432 | &attachment_len); | |
12433 | ||
12434 | if (ret < 0) | |
12435 | return ret; | |
12436 | ||
bc20a4af | 12437 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
12438 | read_buf, len); |
12439 | if (read_len != ret) | |
12440 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
12441 | ||
12442 | return ret; | |
12443 | } | |
12444 | ||
dd194f6b | 12445 | /* See declaration.h. */ |
80152258 | 12446 | |
dd194f6b PA |
12447 | int |
12448 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
12449 | ULONGEST offset) | |
80152258 | 12450 | { |
dd194f6b PA |
12451 | if (this->fd == fd |
12452 | && this->offset <= offset | |
12453 | && offset < this->offset + this->bufsize) | |
80152258 | 12454 | { |
dd194f6b | 12455 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
12456 | |
12457 | if (offset + len > max) | |
12458 | len = max - offset; | |
12459 | ||
dd194f6b | 12460 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
12461 | return len; |
12462 | } | |
12463 | ||
12464 | return 0; | |
12465 | } | |
12466 | ||
12467 | /* Implementation of to_fileio_pread. */ | |
12468 | ||
6b8edb51 PA |
12469 | int |
12470 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 12471 | ULONGEST offset, fileio_error *remote_errno) |
80152258 PA |
12472 | { |
12473 | int ret; | |
12474 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12475 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12476 | |
dd194f6b | 12477 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12478 | if (ret > 0) |
12479 | { | |
12480 | cache->hit_count++; | |
12481 | ||
2189c312 SM |
12482 | remote_debug_printf ("readahead cache hit %s", |
12483 | pulongest (cache->hit_count)); | |
80152258 PA |
12484 | return ret; |
12485 | } | |
12486 | ||
12487 | cache->miss_count++; | |
2189c312 SM |
12488 | |
12489 | remote_debug_printf ("readahead cache miss %s", | |
12490 | pulongest (cache->miss_count)); | |
80152258 PA |
12491 | |
12492 | cache->fd = fd; | |
12493 | cache->offset = offset; | |
12494 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 12495 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 | 12496 | |
6b8edb51 | 12497 | ret = remote_hostio_pread_vFile (cache->fd, cache->buf, cache->bufsize, |
80152258 PA |
12498 | cache->offset, remote_errno); |
12499 | if (ret <= 0) | |
12500 | { | |
dd194f6b | 12501 | cache->invalidate_fd (fd); |
80152258 PA |
12502 | return ret; |
12503 | } | |
12504 | ||
12505 | cache->bufsize = ret; | |
dd194f6b | 12506 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12507 | } |
12508 | ||
f6ac5f3d PA |
12509 | int |
12510 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
b872057a | 12511 | ULONGEST offset, fileio_error *remote_errno) |
f6ac5f3d | 12512 | { |
6b8edb51 | 12513 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12514 | } |
12515 | ||
12e2a5fd | 12516 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12517 | |
6b8edb51 | 12518 | int |
b872057a | 12519 | remote_target::remote_hostio_close (int fd, fileio_error *remote_errno) |
a6b151f1 DJ |
12520 | { |
12521 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12522 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12523 | int left = get_remote_packet_size () - 1; |
12524 | ||
dd194f6b | 12525 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12526 | |
a6b151f1 DJ |
12527 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12528 | ||
12529 | remote_buffer_add_int (&p, &left, fd); | |
12530 | ||
8d64371b | 12531 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_close, |
a6b151f1 DJ |
12532 | remote_errno, NULL, NULL); |
12533 | } | |
12534 | ||
f6ac5f3d | 12535 | int |
b872057a | 12536 | remote_target::fileio_close (int fd, fileio_error *remote_errno) |
f6ac5f3d | 12537 | { |
6b8edb51 | 12538 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12539 | } |
12540 | ||
12e2a5fd | 12541 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12542 | |
6b8edb51 PA |
12543 | int |
12544 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
b872057a | 12545 | fileio_error *remote_errno) |
a6b151f1 DJ |
12546 | { |
12547 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12548 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12549 | int left = get_remote_packet_size () - 1; |
12550 | ||
15a201c8 GB |
12551 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12552 | return -1; | |
12553 | ||
a6b151f1 DJ |
12554 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12555 | ||
12556 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12557 | strlen (filename)); | |
12558 | ||
8d64371b | 12559 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_unlink, |
a6b151f1 DJ |
12560 | remote_errno, NULL, NULL); |
12561 | } | |
12562 | ||
f6ac5f3d PA |
12563 | int |
12564 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
b872057a | 12565 | fileio_error *remote_errno) |
f6ac5f3d | 12566 | { |
6b8edb51 | 12567 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12568 | } |
12569 | ||
12e2a5fd | 12570 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12571 | |
f6ac5f3d PA |
12572 | gdb::optional<std::string> |
12573 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
b872057a | 12574 | fileio_error *remote_errno) |
b9e7b9c3 UW |
12575 | { |
12576 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12577 | char *p = rs->buf.data (); |
aa2838cc | 12578 | const char *attachment; |
b9e7b9c3 UW |
12579 | int left = get_remote_packet_size (); |
12580 | int len, attachment_len; | |
12581 | int read_len; | |
b9e7b9c3 | 12582 | |
15a201c8 | 12583 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12584 | return {}; |
15a201c8 | 12585 | |
b9e7b9c3 UW |
12586 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12587 | ||
12588 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12589 | strlen (filename)); | |
12590 | ||
8d64371b | 12591 | len = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_readlink, |
b9e7b9c3 UW |
12592 | remote_errno, &attachment, |
12593 | &attachment_len); | |
12594 | ||
12595 | if (len < 0) | |
e0d3522b | 12596 | return {}; |
b9e7b9c3 | 12597 | |
e0d3522b | 12598 | std::string ret (len, '\0'); |
b9e7b9c3 | 12599 | |
bc20a4af | 12600 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12601 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12602 | if (read_len != len) |
12603 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12604 | ||
b9e7b9c3 UW |
12605 | return ret; |
12606 | } | |
12607 | ||
12e2a5fd | 12608 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12609 | |
f6ac5f3d | 12610 | int |
b872057a | 12611 | remote_target::fileio_fstat (int fd, struct stat *st, fileio_error *remote_errno) |
0a93529c GB |
12612 | { |
12613 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12614 | char *p = rs->buf.data (); |
0a93529c GB |
12615 | int left = get_remote_packet_size (); |
12616 | int attachment_len, ret; | |
aa2838cc | 12617 | const char *attachment; |
0a93529c GB |
12618 | struct fio_stat fst; |
12619 | int read_len; | |
12620 | ||
464b0089 GB |
12621 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12622 | ||
12623 | remote_buffer_add_int (&p, &left, fd); | |
12624 | ||
8d64371b | 12625 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_fstat, |
464b0089 GB |
12626 | remote_errno, &attachment, |
12627 | &attachment_len); | |
12628 | if (ret < 0) | |
0a93529c | 12629 | { |
464b0089 GB |
12630 | if (*remote_errno != FILEIO_ENOSYS) |
12631 | return ret; | |
12632 | ||
0a93529c GB |
12633 | /* Strictly we should return -1, ENOSYS here, but when |
12634 | "set sysroot remote:" was implemented in August 2008 | |
12635 | BFD's need for a stat function was sidestepped with | |
12636 | this hack. This was not remedied until March 2015 | |
12637 | so we retain the previous behavior to avoid breaking | |
12638 | compatibility. | |
12639 | ||
12640 | Note that the memset is a March 2015 addition; older | |
12641 | GDBs set st_size *and nothing else* so the structure | |
12642 | would have garbage in all other fields. This might | |
12643 | break something but retaining the previous behavior | |
12644 | here would be just too wrong. */ | |
12645 | ||
12646 | memset (st, 0, sizeof (struct stat)); | |
12647 | st->st_size = INT_MAX; | |
12648 | return 0; | |
12649 | } | |
12650 | ||
0a93529c GB |
12651 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12652 | (gdb_byte *) &fst, sizeof (fst)); | |
12653 | ||
12654 | if (read_len != ret) | |
12655 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12656 | ||
12657 | if (read_len != sizeof (fst)) | |
12658 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12659 | read_len, (int) sizeof (fst)); | |
12660 | ||
12661 | remote_fileio_to_host_stat (&fst, st); | |
12662 | ||
12663 | return 0; | |
12664 | } | |
12665 | ||
12e2a5fd | 12666 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12667 | |
57810aa7 | 12668 | bool |
f6ac5f3d | 12669 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12670 | { |
12671 | /* Valgrind GDB presents itself as a remote target but works | |
12672 | on the local filesystem: it does not implement remote get | |
12673 | and users are not expected to set a sysroot. To handle | |
12674 | this case we treat the remote filesystem as local if the | |
12675 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12676 | does not support vFile:open. */ | |
e0700ba4 | 12677 | if (gdb_sysroot == TARGET_SYSROOT_PREFIX) |
e3dd7556 GB |
12678 | { |
12679 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12680 | ||
12681 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12682 | { | |
b872057a SM |
12683 | int fd; |
12684 | fileio_error remote_errno; | |
e3dd7556 GB |
12685 | |
12686 | /* Try opening a file to probe support. The supplied | |
12687 | filename is irrelevant, we only care about whether | |
12688 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12689 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12690 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12691 | &remote_errno); |
12692 | ||
12693 | if (fd >= 0) | |
6b8edb51 | 12694 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 GB |
12695 | |
12696 | ps = packet_support (PACKET_vFile_open); | |
12697 | } | |
12698 | ||
12699 | if (ps == PACKET_DISABLE) | |
12700 | { | |
12701 | static int warning_issued = 0; | |
12702 | ||
12703 | if (!warning_issued) | |
12704 | { | |
12705 | warning (_("remote target does not support file" | |
12706 | " transfer, attempting to access files" | |
12707 | " from local filesystem.")); | |
12708 | warning_issued = 1; | |
12709 | } | |
12710 | ||
57810aa7 | 12711 | return true; |
e3dd7556 GB |
12712 | } |
12713 | } | |
12714 | ||
57810aa7 | 12715 | return false; |
e3dd7556 GB |
12716 | } |
12717 | ||
a6b151f1 | 12718 | static int |
b872057a | 12719 | remote_fileio_errno_to_host (fileio_error errnum) |
a6b151f1 DJ |
12720 | { |
12721 | switch (errnum) | |
12722 | { | |
12723 | case FILEIO_EPERM: | |
dda83cd7 | 12724 | return EPERM; |
a6b151f1 | 12725 | case FILEIO_ENOENT: |
dda83cd7 | 12726 | return ENOENT; |
a6b151f1 | 12727 | case FILEIO_EINTR: |
dda83cd7 | 12728 | return EINTR; |
a6b151f1 | 12729 | case FILEIO_EIO: |
dda83cd7 | 12730 | return EIO; |
a6b151f1 | 12731 | case FILEIO_EBADF: |
dda83cd7 | 12732 | return EBADF; |
a6b151f1 | 12733 | case FILEIO_EACCES: |
dda83cd7 | 12734 | return EACCES; |
a6b151f1 | 12735 | case FILEIO_EFAULT: |
dda83cd7 | 12736 | return EFAULT; |
a6b151f1 | 12737 | case FILEIO_EBUSY: |
dda83cd7 | 12738 | return EBUSY; |
a6b151f1 | 12739 | case FILEIO_EEXIST: |
dda83cd7 | 12740 | return EEXIST; |
a6b151f1 | 12741 | case FILEIO_ENODEV: |
dda83cd7 | 12742 | return ENODEV; |
a6b151f1 | 12743 | case FILEIO_ENOTDIR: |
dda83cd7 | 12744 | return ENOTDIR; |
a6b151f1 | 12745 | case FILEIO_EISDIR: |
dda83cd7 | 12746 | return EISDIR; |
a6b151f1 | 12747 | case FILEIO_EINVAL: |
dda83cd7 | 12748 | return EINVAL; |
a6b151f1 | 12749 | case FILEIO_ENFILE: |
dda83cd7 | 12750 | return ENFILE; |
a6b151f1 | 12751 | case FILEIO_EMFILE: |
dda83cd7 | 12752 | return EMFILE; |
a6b151f1 | 12753 | case FILEIO_EFBIG: |
dda83cd7 | 12754 | return EFBIG; |
a6b151f1 | 12755 | case FILEIO_ENOSPC: |
dda83cd7 | 12756 | return ENOSPC; |
a6b151f1 | 12757 | case FILEIO_ESPIPE: |
dda83cd7 | 12758 | return ESPIPE; |
a6b151f1 | 12759 | case FILEIO_EROFS: |
dda83cd7 | 12760 | return EROFS; |
a6b151f1 | 12761 | case FILEIO_ENOSYS: |
dda83cd7 | 12762 | return ENOSYS; |
a6b151f1 | 12763 | case FILEIO_ENAMETOOLONG: |
dda83cd7 | 12764 | return ENAMETOOLONG; |
a6b151f1 DJ |
12765 | } |
12766 | return -1; | |
12767 | } | |
12768 | ||
12769 | static char * | |
b872057a | 12770 | remote_hostio_error (fileio_error errnum) |
a6b151f1 DJ |
12771 | { |
12772 | int host_error = remote_fileio_errno_to_host (errnum); | |
12773 | ||
12774 | if (host_error == -1) | |
12775 | error (_("Unknown remote I/O error %d"), errnum); | |
12776 | else | |
12777 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12778 | } | |
12779 | ||
440b7aec PA |
12780 | /* A RAII wrapper around a remote file descriptor. */ |
12781 | ||
12782 | class scoped_remote_fd | |
a6b151f1 | 12783 | { |
440b7aec | 12784 | public: |
6b8edb51 PA |
12785 | scoped_remote_fd (remote_target *remote, int fd) |
12786 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12787 | { |
12788 | } | |
a6b151f1 | 12789 | |
440b7aec PA |
12790 | ~scoped_remote_fd () |
12791 | { | |
12792 | if (m_fd != -1) | |
12793 | { | |
12794 | try | |
12795 | { | |
b872057a | 12796 | fileio_error remote_errno; |
6b8edb51 | 12797 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12798 | } |
12799 | catch (...) | |
12800 | { | |
12801 | /* Swallow exception before it escapes the dtor. If | |
12802 | something goes wrong, likely the connection is gone, | |
12803 | and there's nothing else that can be done. */ | |
12804 | } | |
12805 | } | |
12806 | } | |
12807 | ||
12808 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12809 | ||
12810 | /* Release ownership of the file descriptor, and return it. */ | |
88a774b9 | 12811 | ATTRIBUTE_UNUSED_RESULT int release () noexcept |
440b7aec PA |
12812 | { |
12813 | int fd = m_fd; | |
12814 | m_fd = -1; | |
12815 | return fd; | |
12816 | } | |
12817 | ||
12818 | /* Return the owned file descriptor. */ | |
12819 | int get () const noexcept | |
12820 | { | |
12821 | return m_fd; | |
12822 | } | |
12823 | ||
12824 | private: | |
6b8edb51 PA |
12825 | /* The remote target. */ |
12826 | remote_target *m_remote; | |
12827 | ||
440b7aec PA |
12828 | /* The owned remote I/O file descriptor. */ |
12829 | int m_fd; | |
12830 | }; | |
a6b151f1 DJ |
12831 | |
12832 | void | |
12833 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12834 | { |
12835 | remote_target *remote = get_current_remote_target (); | |
12836 | ||
12837 | if (remote == nullptr) | |
12838 | error (_("command can only be used with remote target")); | |
12839 | ||
12840 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12841 | } | |
12842 | ||
12843 | void | |
12844 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12845 | int from_tty) | |
a6b151f1 | 12846 | { |
b872057a SM |
12847 | int retcode, bytes, io_size; |
12848 | fileio_error remote_errno; | |
a6b151f1 DJ |
12849 | int bytes_in_buffer; |
12850 | int saw_eof; | |
12851 | ULONGEST offset; | |
a6b151f1 | 12852 | |
d419f42d | 12853 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12854 | if (file == NULL) |
12855 | perror_with_name (local_file); | |
a6b151f1 | 12856 | |
440b7aec | 12857 | scoped_remote_fd fd |
6b8edb51 PA |
12858 | (this, remote_hostio_open (NULL, |
12859 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12860 | | FILEIO_O_TRUNC), | |
12861 | 0700, 0, &remote_errno)); | |
440b7aec | 12862 | if (fd.get () == -1) |
a6b151f1 DJ |
12863 | remote_hostio_error (remote_errno); |
12864 | ||
12865 | /* Send up to this many bytes at once. They won't all fit in the | |
12866 | remote packet limit, so we'll transfer slightly fewer. */ | |
12867 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12868 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12869 | |
a6b151f1 DJ |
12870 | bytes_in_buffer = 0; |
12871 | saw_eof = 0; | |
12872 | offset = 0; | |
12873 | while (bytes_in_buffer || !saw_eof) | |
12874 | { | |
12875 | if (!saw_eof) | |
12876 | { | |
5ca3b260 | 12877 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12878 | io_size - bytes_in_buffer, |
d419f42d | 12879 | file.get ()); |
a6b151f1 DJ |
12880 | if (bytes == 0) |
12881 | { | |
d419f42d | 12882 | if (ferror (file.get ())) |
a6b151f1 DJ |
12883 | error (_("Error reading %s."), local_file); |
12884 | else | |
12885 | { | |
12886 | /* EOF. Unless there is something still in the | |
12887 | buffer from the last iteration, we are done. */ | |
12888 | saw_eof = 1; | |
12889 | if (bytes_in_buffer == 0) | |
12890 | break; | |
12891 | } | |
12892 | } | |
12893 | } | |
12894 | else | |
12895 | bytes = 0; | |
12896 | ||
12897 | bytes += bytes_in_buffer; | |
12898 | bytes_in_buffer = 0; | |
12899 | ||
5ca3b260 | 12900 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 12901 | offset, &remote_errno); |
a6b151f1 DJ |
12902 | |
12903 | if (retcode < 0) | |
12904 | remote_hostio_error (remote_errno); | |
12905 | else if (retcode == 0) | |
12906 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12907 | else if (retcode < bytes) | |
12908 | { | |
12909 | /* Short write. Save the rest of the read data for the next | |
12910 | write. */ | |
12911 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 12912 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
12913 | } |
12914 | ||
12915 | offset += retcode; | |
12916 | } | |
12917 | ||
6b8edb51 | 12918 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12919 | remote_hostio_error (remote_errno); |
12920 | ||
12921 | if (from_tty) | |
6cb06a8c | 12922 | gdb_printf (_("Successfully sent file \"%s\".\n"), local_file); |
a6b151f1 DJ |
12923 | } |
12924 | ||
12925 | void | |
12926 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
12927 | { |
12928 | remote_target *remote = get_current_remote_target (); | |
12929 | ||
12930 | if (remote == nullptr) | |
12931 | error (_("command can only be used with remote target")); | |
12932 | ||
12933 | remote->remote_file_get (remote_file, local_file, from_tty); | |
12934 | } | |
12935 | ||
12936 | void | |
12937 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
12938 | int from_tty) | |
a6b151f1 | 12939 | { |
b872057a SM |
12940 | fileio_error remote_errno; |
12941 | int bytes, io_size; | |
a6b151f1 | 12942 | ULONGEST offset; |
a6b151f1 | 12943 | |
440b7aec | 12944 | scoped_remote_fd fd |
6b8edb51 PA |
12945 | (this, remote_hostio_open (NULL, |
12946 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12947 | &remote_errno)); | |
440b7aec | 12948 | if (fd.get () == -1) |
a6b151f1 DJ |
12949 | remote_hostio_error (remote_errno); |
12950 | ||
d419f42d | 12951 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12952 | if (file == NULL) |
12953 | perror_with_name (local_file); | |
a6b151f1 DJ |
12954 | |
12955 | /* Send up to this many bytes at once. They won't all fit in the | |
12956 | remote packet limit, so we'll transfer slightly fewer. */ | |
12957 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12958 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12959 | |
a6b151f1 DJ |
12960 | offset = 0; |
12961 | while (1) | |
12962 | { | |
5ca3b260 | 12963 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 12964 | &remote_errno); |
a6b151f1 DJ |
12965 | if (bytes == 0) |
12966 | /* Success, but no bytes, means end-of-file. */ | |
12967 | break; | |
12968 | if (bytes == -1) | |
12969 | remote_hostio_error (remote_errno); | |
12970 | ||
12971 | offset += bytes; | |
12972 | ||
5ca3b260 | 12973 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
12974 | if (bytes == 0) |
12975 | perror_with_name (local_file); | |
12976 | } | |
12977 | ||
6b8edb51 | 12978 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12979 | remote_hostio_error (remote_errno); |
12980 | ||
12981 | if (from_tty) | |
6cb06a8c | 12982 | gdb_printf (_("Successfully fetched file \"%s\".\n"), remote_file); |
a6b151f1 DJ |
12983 | } |
12984 | ||
12985 | void | |
12986 | remote_file_delete (const char *remote_file, int from_tty) | |
12987 | { | |
6b8edb51 | 12988 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 12989 | |
6b8edb51 | 12990 | if (remote == nullptr) |
a6b151f1 DJ |
12991 | error (_("command can only be used with remote target")); |
12992 | ||
6b8edb51 PA |
12993 | remote->remote_file_delete (remote_file, from_tty); |
12994 | } | |
12995 | ||
12996 | void | |
12997 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
12998 | { | |
b872057a SM |
12999 | int retcode; |
13000 | fileio_error remote_errno; | |
6b8edb51 PA |
13001 | |
13002 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
13003 | if (retcode == -1) |
13004 | remote_hostio_error (remote_errno); | |
13005 | ||
13006 | if (from_tty) | |
6cb06a8c | 13007 | gdb_printf (_("Successfully deleted file \"%s\".\n"), remote_file); |
a6b151f1 DJ |
13008 | } |
13009 | ||
13010 | static void | |
ac88e2de | 13011 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 13012 | { |
d1a41061 PP |
13013 | if (args == NULL) |
13014 | error_no_arg (_("file to put")); | |
13015 | ||
773a1edc | 13016 | gdb_argv argv (args); |
a6b151f1 DJ |
13017 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
13018 | error (_("Invalid parameters to remote put")); | |
13019 | ||
13020 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
13021 | } |
13022 | ||
13023 | static void | |
ac88e2de | 13024 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 13025 | { |
d1a41061 PP |
13026 | if (args == NULL) |
13027 | error_no_arg (_("file to get")); | |
13028 | ||
773a1edc | 13029 | gdb_argv argv (args); |
a6b151f1 DJ |
13030 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
13031 | error (_("Invalid parameters to remote get")); | |
13032 | ||
13033 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
13034 | } |
13035 | ||
13036 | static void | |
ac88e2de | 13037 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 13038 | { |
d1a41061 PP |
13039 | if (args == NULL) |
13040 | error_no_arg (_("file to delete")); | |
13041 | ||
773a1edc | 13042 | gdb_argv argv (args); |
a6b151f1 DJ |
13043 | if (argv[0] == NULL || argv[1] != NULL) |
13044 | error (_("Invalid parameters to remote delete")); | |
13045 | ||
13046 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
13047 | } |
13048 | ||
57810aa7 | 13049 | bool |
f6ac5f3d | 13050 | remote_target::can_execute_reverse () |
b2175913 | 13051 | { |
4082afcc PA |
13052 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
13053 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 13054 | return true; |
40ab02ce | 13055 | else |
57810aa7 | 13056 | return false; |
b2175913 MS |
13057 | } |
13058 | ||
57810aa7 | 13059 | bool |
f6ac5f3d | 13060 | remote_target::supports_non_stop () |
74531fed | 13061 | { |
57810aa7 | 13062 | return true; |
74531fed PA |
13063 | } |
13064 | ||
57810aa7 | 13065 | bool |
f6ac5f3d | 13066 | remote_target::supports_disable_randomization () |
03583c20 UW |
13067 | { |
13068 | /* Only supported in extended mode. */ | |
57810aa7 | 13069 | return false; |
03583c20 UW |
13070 | } |
13071 | ||
57810aa7 | 13072 | bool |
f6ac5f3d | 13073 | remote_target::supports_multi_process () |
8a305172 PA |
13074 | { |
13075 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 13076 | |
8020350c | 13077 | return remote_multi_process_p (rs); |
8a305172 PA |
13078 | } |
13079 | ||
70221824 | 13080 | static int |
f6ac5f3d | 13081 | remote_supports_cond_tracepoints () |
782b2b07 | 13082 | { |
4082afcc | 13083 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
13084 | } |
13085 | ||
57810aa7 | 13086 | bool |
f6ac5f3d | 13087 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 13088 | { |
4082afcc | 13089 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
13090 | } |
13091 | ||
70221824 | 13092 | static int |
f6ac5f3d | 13093 | remote_supports_fast_tracepoints () |
7a697b8d | 13094 | { |
4082afcc | 13095 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
13096 | } |
13097 | ||
0fb4aa4b | 13098 | static int |
f6ac5f3d | 13099 | remote_supports_static_tracepoints () |
0fb4aa4b | 13100 | { |
4082afcc | 13101 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
13102 | } |
13103 | ||
1e4d1764 | 13104 | static int |
f6ac5f3d | 13105 | remote_supports_install_in_trace () |
1e4d1764 | 13106 | { |
4082afcc | 13107 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
13108 | } |
13109 | ||
57810aa7 | 13110 | bool |
f6ac5f3d | 13111 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 13112 | { |
4082afcc PA |
13113 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
13114 | == PACKET_ENABLE); | |
d248b706 KY |
13115 | } |
13116 | ||
57810aa7 | 13117 | bool |
f6ac5f3d | 13118 | remote_target::supports_string_tracing () |
3065dfb6 | 13119 | { |
4082afcc | 13120 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
13121 | } |
13122 | ||
57810aa7 | 13123 | bool |
f6ac5f3d | 13124 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 13125 | { |
4082afcc | 13126 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
13127 | } |
13128 | ||
f6ac5f3d PA |
13129 | void |
13130 | remote_target::trace_init () | |
35b1e5cc | 13131 | { |
b6bb3468 PA |
13132 | struct remote_state *rs = get_remote_state (); |
13133 | ||
35b1e5cc | 13134 | putpkt ("QTinit"); |
b6bb3468 | 13135 | remote_get_noisy_reply (); |
8d64371b | 13136 | if (strcmp (rs->buf.data (), "OK") != 0) |
35b1e5cc SS |
13137 | error (_("Target does not support this command.")); |
13138 | } | |
13139 | ||
409873ef SS |
13140 | /* Recursive routine to walk through command list including loops, and |
13141 | download packets for each command. */ | |
13142 | ||
6b8edb51 PA |
13143 | void |
13144 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
13145 | struct command_line *cmds) | |
409873ef SS |
13146 | { |
13147 | struct remote_state *rs = get_remote_state (); | |
13148 | struct command_line *cmd; | |
13149 | ||
13150 | for (cmd = cmds; cmd; cmd = cmd->next) | |
13151 | { | |
0df8b418 | 13152 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 13153 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 13154 | encode_source_string (num, addr, "cmd", cmd->line, |
8d64371b TT |
13155 | rs->buf.data () + strlen (rs->buf.data ()), |
13156 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13157 | putpkt (rs->buf); |
b6bb3468 | 13158 | remote_get_noisy_reply (); |
8d64371b | 13159 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13160 | warning (_("Target does not support source download.")); |
13161 | ||
13162 | if (cmd->control_type == while_control | |
13163 | || cmd->control_type == while_stepping_control) | |
13164 | { | |
12973681 | 13165 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 13166 | |
0df8b418 | 13167 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 13168 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 13169 | encode_source_string (num, addr, "cmd", "end", |
8d64371b TT |
13170 | rs->buf.data () + strlen (rs->buf.data ()), |
13171 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13172 | putpkt (rs->buf); |
b6bb3468 | 13173 | remote_get_noisy_reply (); |
8d64371b | 13174 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13175 | warning (_("Target does not support source download.")); |
13176 | } | |
13177 | } | |
13178 | } | |
13179 | ||
f6ac5f3d PA |
13180 | void |
13181 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc SS |
13182 | { |
13183 | CORE_ADDR tpaddr; | |
409873ef | 13184 | char addrbuf[40]; |
b44ec619 SM |
13185 | std::vector<std::string> tdp_actions; |
13186 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 13187 | char *pkt; |
e8ba3115 | 13188 | struct breakpoint *b = loc->owner; |
d9b3f62e | 13189 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 13190 | struct remote_state *rs = get_remote_state (); |
3df3a985 | 13191 | int ret; |
ff36536c | 13192 | const char *err_msg = _("Tracepoint packet too large for target."); |
3df3a985 PFC |
13193 | size_t size_left; |
13194 | ||
13195 | /* We use a buffer other than rs->buf because we'll build strings | |
13196 | across multiple statements, and other statements in between could | |
13197 | modify rs->buf. */ | |
13198 | gdb::char_vector buf (get_remote_packet_size ()); | |
35b1e5cc | 13199 | |
dc673c81 | 13200 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
13201 | |
13202 | tpaddr = loc->address; | |
53807e9f | 13203 | strcpy (addrbuf, phex (tpaddr, sizeof (CORE_ADDR))); |
3df3a985 PFC |
13204 | ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x", |
13205 | b->number, addrbuf, /* address */ | |
13206 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
13207 | t->step_count, t->pass_count); | |
13208 | ||
13209 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13210 | error ("%s", err_msg); |
3df3a985 | 13211 | |
e8ba3115 YQ |
13212 | /* Fast tracepoints are mostly handled by the target, but we can |
13213 | tell the target how big of an instruction block should be moved | |
13214 | around. */ | |
13215 | if (b->type == bp_fast_tracepoint) | |
13216 | { | |
13217 | /* Only test for support at download time; we may not know | |
13218 | target capabilities at definition time. */ | |
13219 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 13220 | { |
6b940e6a PL |
13221 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
13222 | NULL)) | |
3df3a985 PFC |
13223 | { |
13224 | size_left = buf.size () - strlen (buf.data ()); | |
13225 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13226 | size_left, ":F%x", | |
13227 | gdb_insn_length (loc->gdbarch, tpaddr)); | |
13228 | ||
13229 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13230 | error ("%s", err_msg); |
3df3a985 | 13231 | } |
35b1e5cc | 13232 | else |
e8ba3115 YQ |
13233 | /* If it passed validation at definition but fails now, |
13234 | something is very wrong. */ | |
13235 | internal_error (__FILE__, __LINE__, | |
13236 | _("Fast tracepoint not " | |
13237 | "valid during download")); | |
35b1e5cc | 13238 | } |
e8ba3115 YQ |
13239 | else |
13240 | /* Fast tracepoints are functionally identical to regular | |
13241 | tracepoints, so don't take lack of support as a reason to | |
13242 | give up on the trace run. */ | |
13243 | warning (_("Target does not support fast tracepoints, " | |
13244 | "downloading %d as regular tracepoint"), b->number); | |
13245 | } | |
7b572efb TT |
13246 | else if (b->type == bp_static_tracepoint |
13247 | || b->type == bp_static_marker_tracepoint) | |
e8ba3115 YQ |
13248 | { |
13249 | /* Only test for support at download time; we may not know | |
13250 | target capabilities at definition time. */ | |
13251 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 13252 | { |
e8ba3115 | 13253 | struct static_tracepoint_marker marker; |
0fb4aa4b | 13254 | |
e8ba3115 | 13255 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
3df3a985 PFC |
13256 | { |
13257 | size_left = buf.size () - strlen (buf.data ()); | |
13258 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13259 | size_left, ":S"); | |
13260 | ||
13261 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13262 | error ("%s", err_msg); |
3df3a985 | 13263 | } |
0fb4aa4b | 13264 | else |
e8ba3115 | 13265 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 13266 | } |
e8ba3115 YQ |
13267 | else |
13268 | /* Fast tracepoints are functionally identical to regular | |
13269 | tracepoints, so don't take lack of support as a reason | |
13270 | to give up on the trace run. */ | |
13271 | error (_("Target does not support static tracepoints")); | |
13272 | } | |
13273 | /* If the tracepoint has a conditional, make it into an agent | |
13274 | expression and append to the definition. */ | |
13275 | if (loc->cond) | |
13276 | { | |
13277 | /* Only test support at download time, we may not know target | |
13278 | capabilities at definition time. */ | |
13279 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 13280 | { |
3df3a985 PFC |
13281 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, |
13282 | loc->cond.get ()); | |
13283 | ||
13284 | size_left = buf.size () - strlen (buf.data ()); | |
13285 | ||
13286 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13287 | size_left, ":X%x,", aexpr->len); | |
13288 | ||
13289 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13290 | error ("%s", err_msg); |
3df3a985 PFC |
13291 | |
13292 | size_left = buf.size () - strlen (buf.data ()); | |
13293 | ||
13294 | /* Two bytes to encode each aexpr byte, plus the terminating | |
13295 | null byte. */ | |
13296 | if (aexpr->len * 2 + 1 > size_left) | |
a7f25a84 | 13297 | error ("%s", err_msg); |
3df3a985 PFC |
13298 | |
13299 | pkt = buf.data () + strlen (buf.data ()); | |
13300 | ||
b44ec619 | 13301 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
13302 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
13303 | *pkt = '\0'; | |
35b1e5cc | 13304 | } |
e8ba3115 YQ |
13305 | else |
13306 | warning (_("Target does not support conditional tracepoints, " | |
13307 | "ignoring tp %d cond"), b->number); | |
13308 | } | |
35b1e5cc | 13309 | |
e0700ba4 | 13310 | if (b->commands || !default_collect.empty ()) |
3df3a985 PFC |
13311 | { |
13312 | size_left = buf.size () - strlen (buf.data ()); | |
13313 | ||
13314 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13315 | size_left, "-"); | |
13316 | ||
13317 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13318 | error ("%s", err_msg); |
3df3a985 PFC |
13319 | } |
13320 | ||
13321 | putpkt (buf.data ()); | |
b6bb3468 | 13322 | remote_get_noisy_reply (); |
8d64371b | 13323 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13324 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 13325 | |
e8ba3115 | 13326 | /* do_single_steps (t); */ |
b44ec619 SM |
13327 | for (auto action_it = tdp_actions.begin (); |
13328 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 13329 | { |
b44ec619 SM |
13330 | QUIT; /* Allow user to bail out with ^C. */ |
13331 | ||
aa6f3694 | 13332 | bool has_more = ((action_it + 1) != tdp_actions.end () |
b44ec619 SM |
13333 | || !stepping_actions.empty ()); |
13334 | ||
3df3a985 PFC |
13335 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c", |
13336 | b->number, addrbuf, /* address */ | |
13337 | action_it->c_str (), | |
13338 | has_more ? '-' : 0); | |
13339 | ||
13340 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13341 | error ("%s", err_msg); |
3df3a985 PFC |
13342 | |
13343 | putpkt (buf.data ()); | |
b44ec619 | 13344 | remote_get_noisy_reply (); |
8d64371b | 13345 | if (strcmp (rs->buf.data (), "OK")) |
b44ec619 | 13346 | error (_("Error on target while setting tracepoints.")); |
e8ba3115 | 13347 | } |
409873ef | 13348 | |
05abfc39 PFC |
13349 | for (auto action_it = stepping_actions.begin (); |
13350 | action_it != stepping_actions.end (); action_it++) | |
13351 | { | |
13352 | QUIT; /* Allow user to bail out with ^C. */ | |
13353 | ||
13354 | bool is_first = action_it == stepping_actions.begin (); | |
aa6f3694 | 13355 | bool has_more = (action_it + 1) != stepping_actions.end (); |
05abfc39 | 13356 | |
3df3a985 PFC |
13357 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s", |
13358 | b->number, addrbuf, /* address */ | |
13359 | is_first ? "S" : "", | |
13360 | action_it->c_str (), | |
13361 | has_more ? "-" : ""); | |
13362 | ||
13363 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13364 | error ("%s", err_msg); |
3df3a985 PFC |
13365 | |
13366 | putpkt (buf.data ()); | |
05abfc39 | 13367 | remote_get_noisy_reply (); |
8d64371b | 13368 | if (strcmp (rs->buf.data (), "OK")) |
05abfc39 PFC |
13369 | error (_("Error on target while setting tracepoints.")); |
13370 | } | |
b44ec619 | 13371 | |
4082afcc | 13372 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 13373 | { |
264f9890 | 13374 | if (b->locspec != nullptr) |
409873ef | 13375 | { |
3df3a985 PFC |
13376 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13377 | ||
13378 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13379 | error ("%s", err_msg); |
3df3a985 | 13380 | |
709438c7 | 13381 | const char *str = b->locspec->to_string (); |
264f9890 | 13382 | encode_source_string (b->number, loc->address, "at", str, |
3df3a985 PFC |
13383 | buf.data () + strlen (buf.data ()), |
13384 | buf.size () - strlen (buf.data ())); | |
13385 | putpkt (buf.data ()); | |
b6bb3468 | 13386 | remote_get_noisy_reply (); |
8d64371b | 13387 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13388 | warning (_("Target does not support source download.")); |
409873ef | 13389 | } |
e8ba3115 YQ |
13390 | if (b->cond_string) |
13391 | { | |
3df3a985 PFC |
13392 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13393 | ||
13394 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13395 | error ("%s", err_msg); |
3df3a985 | 13396 | |
e8ba3115 | 13397 | encode_source_string (b->number, loc->address, |
6f781ee3 | 13398 | "cond", b->cond_string.get (), |
3df3a985 PFC |
13399 | buf.data () + strlen (buf.data ()), |
13400 | buf.size () - strlen (buf.data ())); | |
13401 | putpkt (buf.data ()); | |
b6bb3468 | 13402 | remote_get_noisy_reply (); |
8d64371b | 13403 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 YQ |
13404 | warning (_("Target does not support source download.")); |
13405 | } | |
13406 | remote_download_command_source (b->number, loc->address, | |
13407 | breakpoint_commands (b)); | |
35b1e5cc | 13408 | } |
35b1e5cc SS |
13409 | } |
13410 | ||
57810aa7 | 13411 | bool |
f6ac5f3d | 13412 | remote_target::can_download_tracepoint () |
1e4d1764 | 13413 | { |
1e51243a PA |
13414 | struct remote_state *rs = get_remote_state (); |
13415 | struct trace_status *ts; | |
13416 | int status; | |
13417 | ||
13418 | /* Don't try to install tracepoints until we've relocated our | |
13419 | symbols, and fetched and merged the target's tracepoint list with | |
13420 | ours. */ | |
13421 | if (rs->starting_up) | |
57810aa7 | 13422 | return false; |
1e51243a PA |
13423 | |
13424 | ts = current_trace_status (); | |
f6ac5f3d | 13425 | status = get_trace_status (ts); |
1e4d1764 YQ |
13426 | |
13427 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 13428 | return false; |
1e4d1764 YQ |
13429 | |
13430 | /* If we are in a tracing experiment, but remote stub doesn't support | |
13431 | installing tracepoint in trace, we have to return. */ | |
13432 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 13433 | return false; |
1e4d1764 | 13434 | |
57810aa7 | 13435 | return true; |
1e4d1764 YQ |
13436 | } |
13437 | ||
13438 | ||
f6ac5f3d PA |
13439 | void |
13440 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
13441 | { |
13442 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 13443 | char *p; |
35b1e5cc | 13444 | |
8d64371b | 13445 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
13446 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
13447 | tsv.builtin); | |
8d64371b TT |
13448 | p = rs->buf.data () + strlen (rs->buf.data ()); |
13449 | if ((p - rs->buf.data ()) + tsv.name.length () * 2 | |
13450 | >= get_remote_packet_size ()) | |
00bf0b85 | 13451 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 13452 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 13453 | *p++ = '\0'; |
35b1e5cc | 13454 | putpkt (rs->buf); |
b6bb3468 | 13455 | remote_get_noisy_reply (); |
8d64371b | 13456 | if (rs->buf[0] == '\0') |
ad91cd99 | 13457 | error (_("Target does not support this command.")); |
8d64371b | 13458 | if (strcmp (rs->buf.data (), "OK") != 0) |
ad91cd99 | 13459 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13460 | } |
13461 | ||
f6ac5f3d PA |
13462 | void |
13463 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13464 | { |
13465 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13466 | |
8d64371b | 13467 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTEnable:%x:%s", |
53807e9f TT |
13468 | location->owner->number, |
13469 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13470 | putpkt (rs->buf); |
b6bb3468 | 13471 | remote_get_noisy_reply (); |
8d64371b | 13472 | if (rs->buf[0] == '\0') |
d248b706 | 13473 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13474 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13475 | error (_("Error on target while enabling tracepoint.")); |
13476 | } | |
13477 | ||
f6ac5f3d PA |
13478 | void |
13479 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13480 | { |
13481 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13482 | |
8d64371b | 13483 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDisable:%x:%s", |
53807e9f TT |
13484 | location->owner->number, |
13485 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13486 | putpkt (rs->buf); |
b6bb3468 | 13487 | remote_get_noisy_reply (); |
8d64371b | 13488 | if (rs->buf[0] == '\0') |
d248b706 | 13489 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13490 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13491 | error (_("Error on target while disabling tracepoint.")); |
13492 | } | |
13493 | ||
f6ac5f3d PA |
13494 | void |
13495 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13496 | { |
13497 | asection *s; | |
13498 | bfd_size_type size; | |
608bcef2 | 13499 | bfd_vma vma; |
35b1e5cc | 13500 | int anysecs = 0; |
c2fa21f1 | 13501 | int offset = 0; |
f493c217 | 13502 | bfd *abfd = current_program_space->exec_bfd (); |
35b1e5cc | 13503 | |
f493c217 | 13504 | if (!abfd) |
35b1e5cc SS |
13505 | return; /* No information to give. */ |
13506 | ||
b6bb3468 PA |
13507 | struct remote_state *rs = get_remote_state (); |
13508 | ||
8d64371b TT |
13509 | strcpy (rs->buf.data (), "QTro"); |
13510 | offset = strlen (rs->buf.data ()); | |
f493c217 | 13511 | for (s = abfd->sections; s; s = s->next) |
35b1e5cc SS |
13512 | { |
13513 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13514 | int sec_length; |
35b1e5cc | 13515 | |
f493c217 AM |
13516 | if ((s->flags & SEC_LOAD) == 0 |
13517 | /* || (s->flags & SEC_CODE) == 0 */ | |
13518 | || (s->flags & SEC_READONLY) == 0) | |
35b1e5cc SS |
13519 | continue; |
13520 | ||
13521 | anysecs = 1; | |
fd361982 AM |
13522 | vma = bfd_section_vma (s); |
13523 | size = bfd_section_size (s); | |
f493c217 AM |
13524 | bfd_sprintf_vma (abfd, tmp1, vma); |
13525 | bfd_sprintf_vma (abfd, tmp2, vma + size); | |
c2fa21f1 | 13526 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
8d64371b | 13527 | if (offset + sec_length + 1 > rs->buf.size ()) |
c2fa21f1 | 13528 | { |
4082afcc | 13529 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 13530 | warning (_("\ |
c2fa21f1 HZ |
13531 | Too many sections for read-only sections definition packet.")); |
13532 | break; | |
13533 | } | |
8d64371b | 13534 | xsnprintf (rs->buf.data () + offset, rs->buf.size () - offset, ":%s,%s", |
bba74b36 | 13535 | tmp1, tmp2); |
c2fa21f1 | 13536 | offset += sec_length; |
35b1e5cc SS |
13537 | } |
13538 | if (anysecs) | |
13539 | { | |
b6bb3468 | 13540 | putpkt (rs->buf); |
8d64371b | 13541 | getpkt (&rs->buf, 0); |
35b1e5cc SS |
13542 | } |
13543 | } | |
13544 | ||
f6ac5f3d PA |
13545 | void |
13546 | remote_target::trace_start () | |
35b1e5cc | 13547 | { |
b6bb3468 PA |
13548 | struct remote_state *rs = get_remote_state (); |
13549 | ||
35b1e5cc | 13550 | putpkt ("QTStart"); |
b6bb3468 | 13551 | remote_get_noisy_reply (); |
8d64371b | 13552 | if (rs->buf[0] == '\0') |
ad91cd99 | 13553 | error (_("Target does not support this command.")); |
8d64371b TT |
13554 | if (strcmp (rs->buf.data (), "OK") != 0) |
13555 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13556 | } |
13557 | ||
f6ac5f3d PA |
13558 | int |
13559 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13560 | { |
953b98d1 | 13561 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13562 | char *p = NULL; |
bd3eecc3 | 13563 | enum packet_result result; |
b6bb3468 | 13564 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13565 | |
4082afcc | 13566 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13567 | return -1; |
a744cf53 | 13568 | |
7b9a15e1 | 13569 | /* FIXME we need to get register block size some other way. */ |
5cd63fda | 13570 | trace_regblock_size |
9d6eea31 | 13571 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 13572 | |
049dc89b JK |
13573 | putpkt ("qTStatus"); |
13574 | ||
a70b8144 | 13575 | try |
67f41397 | 13576 | { |
b6bb3468 | 13577 | p = remote_get_noisy_reply (); |
67f41397 | 13578 | } |
230d2906 | 13579 | catch (const gdb_exception_error &ex) |
67f41397 | 13580 | { |
598d3636 JK |
13581 | if (ex.error != TARGET_CLOSE_ERROR) |
13582 | { | |
13583 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13584 | return -1; | |
13585 | } | |
eedc3f4f | 13586 | throw; |
67f41397 | 13587 | } |
00bf0b85 | 13588 | |
bd3eecc3 PA |
13589 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
13590 | ||
00bf0b85 | 13591 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13592 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13593 | return -1; |
35b1e5cc | 13594 | |
00bf0b85 | 13595 | /* We're working with a live target. */ |
f5911ea1 | 13596 | ts->filename = NULL; |
00bf0b85 | 13597 | |
00bf0b85 | 13598 | if (*p++ != 'T') |
8d64371b | 13599 | error (_("Bogus trace status reply from target: %s"), rs->buf.data ()); |
35b1e5cc | 13600 | |
84cebc4a YQ |
13601 | /* Function 'parse_trace_status' sets default value of each field of |
13602 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13603 | parse_trace_status (p, ts); |
13604 | ||
13605 | return ts->running; | |
35b1e5cc SS |
13606 | } |
13607 | ||
f6ac5f3d PA |
13608 | void |
13609 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13610 | struct uploaded_tp *utp) | |
f196051f SS |
13611 | { |
13612 | struct remote_state *rs = get_remote_state (); | |
f196051f | 13613 | char *reply; |
f196051f | 13614 | struct tracepoint *tp = (struct tracepoint *) bp; |
bba74b36 | 13615 | size_t size = get_remote_packet_size (); |
f196051f SS |
13616 | |
13617 | if (tp) | |
13618 | { | |
c1fc2657 | 13619 | tp->hit_count = 0; |
f196051f | 13620 | tp->traceframe_usage = 0; |
40cb8ca5 | 13621 | for (bp_location *loc : tp->locations ()) |
f196051f SS |
13622 | { |
13623 | /* If the tracepoint was never downloaded, don't go asking for | |
13624 | any status. */ | |
13625 | if (tp->number_on_target == 0) | |
13626 | continue; | |
8d64371b | 13627 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", tp->number_on_target, |
bba74b36 | 13628 | phex_nz (loc->address, 0)); |
f196051f | 13629 | putpkt (rs->buf); |
b6bb3468 | 13630 | reply = remote_get_noisy_reply (); |
f196051f SS |
13631 | if (reply && *reply) |
13632 | { | |
13633 | if (*reply == 'V') | |
13634 | parse_tracepoint_status (reply + 1, bp, utp); | |
13635 | } | |
13636 | } | |
13637 | } | |
13638 | else if (utp) | |
13639 | { | |
13640 | utp->hit_count = 0; | |
13641 | utp->traceframe_usage = 0; | |
8d64371b | 13642 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", utp->number, |
bba74b36 | 13643 | phex_nz (utp->addr, 0)); |
f196051f | 13644 | putpkt (rs->buf); |
b6bb3468 | 13645 | reply = remote_get_noisy_reply (); |
f196051f SS |
13646 | if (reply && *reply) |
13647 | { | |
13648 | if (*reply == 'V') | |
13649 | parse_tracepoint_status (reply + 1, bp, utp); | |
13650 | } | |
13651 | } | |
13652 | } | |
13653 | ||
f6ac5f3d PA |
13654 | void |
13655 | remote_target::trace_stop () | |
35b1e5cc | 13656 | { |
b6bb3468 PA |
13657 | struct remote_state *rs = get_remote_state (); |
13658 | ||
35b1e5cc | 13659 | putpkt ("QTStop"); |
b6bb3468 | 13660 | remote_get_noisy_reply (); |
8d64371b | 13661 | if (rs->buf[0] == '\0') |
ad91cd99 | 13662 | error (_("Target does not support this command.")); |
8d64371b TT |
13663 | if (strcmp (rs->buf.data (), "OK") != 0) |
13664 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13665 | } |
13666 | ||
f6ac5f3d PA |
13667 | int |
13668 | remote_target::trace_find (enum trace_find_type type, int num, | |
13669 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13670 | int *tpp) | |
35b1e5cc SS |
13671 | { |
13672 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 13673 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
35b1e5cc SS |
13674 | char *p, *reply; |
13675 | int target_frameno = -1, target_tracept = -1; | |
13676 | ||
e6e4e701 PA |
13677 | /* Lookups other than by absolute frame number depend on the current |
13678 | trace selected, so make sure it is correct on the remote end | |
13679 | first. */ | |
13680 | if (type != tfind_number) | |
13681 | set_remote_traceframe (); | |
13682 | ||
8d64371b | 13683 | p = rs->buf.data (); |
35b1e5cc SS |
13684 | strcpy (p, "QTFrame:"); |
13685 | p = strchr (p, '\0'); | |
13686 | switch (type) | |
13687 | { | |
13688 | case tfind_number: | |
bba74b36 | 13689 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13690 | break; |
13691 | case tfind_pc: | |
bba74b36 | 13692 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13693 | break; |
13694 | case tfind_tp: | |
bba74b36 | 13695 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13696 | break; |
13697 | case tfind_range: | |
bba74b36 YQ |
13698 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13699 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13700 | break; |
13701 | case tfind_outside: | |
bba74b36 YQ |
13702 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13703 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13704 | break; |
13705 | default: | |
9b20d036 | 13706 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13707 | } |
13708 | ||
13709 | putpkt (rs->buf); | |
b6bb3468 | 13710 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13711 | if (*reply == '\0') |
13712 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13713 | |
13714 | while (reply && *reply) | |
13715 | switch (*reply) | |
13716 | { | |
13717 | case 'F': | |
f197e0f1 VP |
13718 | p = ++reply; |
13719 | target_frameno = (int) strtol (p, &reply, 16); | |
13720 | if (reply == p) | |
13721 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13722 | /* Don't update our remote traceframe number cache on failure |
13723 | to select a remote traceframe. */ | |
f197e0f1 VP |
13724 | if (target_frameno == -1) |
13725 | return -1; | |
35b1e5cc SS |
13726 | break; |
13727 | case 'T': | |
f197e0f1 VP |
13728 | p = ++reply; |
13729 | target_tracept = (int) strtol (p, &reply, 16); | |
13730 | if (reply == p) | |
13731 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13732 | break; |
13733 | case 'O': /* "OK"? */ | |
13734 | if (reply[1] == 'K' && reply[2] == '\0') | |
13735 | reply += 2; | |
13736 | else | |
13737 | error (_("Bogus reply from target: %s"), reply); | |
13738 | break; | |
13739 | default: | |
13740 | error (_("Bogus reply from target: %s"), reply); | |
13741 | } | |
13742 | if (tpp) | |
13743 | *tpp = target_tracept; | |
e6e4e701 | 13744 | |
262e1174 | 13745 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13746 | return target_frameno; |
13747 | } | |
13748 | ||
57810aa7 | 13749 | bool |
f6ac5f3d | 13750 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13751 | { |
13752 | struct remote_state *rs = get_remote_state (); | |
13753 | char *reply; | |
13754 | ULONGEST uval; | |
13755 | ||
e6e4e701 PA |
13756 | set_remote_traceframe (); |
13757 | ||
8d64371b | 13758 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13759 | putpkt (rs->buf); |
b6bb3468 | 13760 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13761 | if (reply && *reply) |
13762 | { | |
13763 | if (*reply == 'V') | |
13764 | { | |
13765 | unpack_varlen_hex (reply + 1, &uval); | |
13766 | *val = (LONGEST) uval; | |
57810aa7 | 13767 | return true; |
35b1e5cc SS |
13768 | } |
13769 | } | |
57810aa7 | 13770 | return false; |
35b1e5cc SS |
13771 | } |
13772 | ||
f6ac5f3d PA |
13773 | int |
13774 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13775 | { |
13776 | struct remote_state *rs = get_remote_state (); | |
13777 | char *p, *reply; | |
13778 | ||
8d64371b | 13779 | p = rs->buf.data (); |
00bf0b85 SS |
13780 | strcpy (p, "QTSave:"); |
13781 | p += strlen (p); | |
8d64371b TT |
13782 | if ((p - rs->buf.data ()) + strlen (filename) * 2 |
13783 | >= get_remote_packet_size ()) | |
00bf0b85 | 13784 | error (_("Remote file name too long for trace save packet")); |
9f1b45b0 | 13785 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13786 | *p++ = '\0'; |
13787 | putpkt (rs->buf); | |
b6bb3468 | 13788 | reply = remote_get_noisy_reply (); |
d6c5869f | 13789 | if (*reply == '\0') |
ad91cd99 PA |
13790 | error (_("Target does not support this command.")); |
13791 | if (strcmp (reply, "OK") != 0) | |
13792 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13793 | return 0; |
13794 | } | |
13795 | ||
13796 | /* This is basically a memory transfer, but needs to be its own packet | |
13797 | because we don't know how the target actually organizes its trace | |
13798 | memory, plus we want to be able to ask for as much as possible, but | |
13799 | not be unhappy if we don't get as much as we ask for. */ | |
13800 | ||
f6ac5f3d PA |
13801 | LONGEST |
13802 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13803 | { |
13804 | struct remote_state *rs = get_remote_state (); | |
13805 | char *reply; | |
13806 | char *p; | |
13807 | int rslt; | |
13808 | ||
8d64371b | 13809 | p = rs->buf.data (); |
00bf0b85 SS |
13810 | strcpy (p, "qTBuffer:"); |
13811 | p += strlen (p); | |
13812 | p += hexnumstr (p, offset); | |
13813 | *p++ = ','; | |
13814 | p += hexnumstr (p, len); | |
13815 | *p++ = '\0'; | |
13816 | ||
13817 | putpkt (rs->buf); | |
b6bb3468 | 13818 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13819 | if (reply && *reply) |
13820 | { | |
13821 | /* 'l' by itself means we're at the end of the buffer and | |
13822 | there is nothing more to get. */ | |
13823 | if (*reply == 'l') | |
13824 | return 0; | |
13825 | ||
13826 | /* Convert the reply into binary. Limit the number of bytes to | |
13827 | convert according to our passed-in buffer size, rather than | |
13828 | what was returned in the packet; if the target is | |
13829 | unexpectedly generous and gives us a bigger reply than we | |
13830 | asked for, we don't want to crash. */ | |
b6bb3468 | 13831 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13832 | return rslt; |
13833 | } | |
13834 | ||
13835 | /* Something went wrong, flag as an error. */ | |
13836 | return -1; | |
13837 | } | |
13838 | ||
f6ac5f3d PA |
13839 | void |
13840 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13841 | { |
13842 | struct remote_state *rs = get_remote_state (); | |
13843 | ||
4082afcc | 13844 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13845 | { |
ad91cd99 PA |
13846 | char *reply; |
13847 | ||
8d64371b TT |
13848 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13849 | "QTDisconnected:%x", val); | |
33da3f1c | 13850 | putpkt (rs->buf); |
b6bb3468 | 13851 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13852 | if (*reply == '\0') |
33da3f1c | 13853 | error (_("Target does not support this command.")); |
ad91cd99 | 13854 | if (strcmp (reply, "OK") != 0) |
dda83cd7 | 13855 | error (_("Bogus reply from target: %s"), reply); |
33da3f1c SS |
13856 | } |
13857 | else if (val) | |
13858 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13859 | } |
13860 | ||
f6ac5f3d PA |
13861 | int |
13862 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c | 13863 | { |
5b6d1e4f | 13864 | thread_info *info = find_thread_ptid (this, ptid); |
a744cf53 | 13865 | |
7aabaf9d SM |
13866 | if (info != NULL && info->priv != NULL) |
13867 | return get_remote_thread_info (info)->core; | |
13868 | ||
dc146f7c VP |
13869 | return -1; |
13870 | } | |
13871 | ||
f6ac5f3d PA |
13872 | void |
13873 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13874 | { |
13875 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13876 | char *reply; |
4daf5ac0 | 13877 | |
8d64371b TT |
13878 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13879 | "QTBuffer:circular:%x", val); | |
4daf5ac0 | 13880 | putpkt (rs->buf); |
b6bb3468 | 13881 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13882 | if (*reply == '\0') |
4daf5ac0 | 13883 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13884 | if (strcmp (reply, "OK") != 0) |
13885 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13886 | } |
13887 | ||
f6ac5f3d PA |
13888 | traceframe_info_up |
13889 | remote_target::traceframe_info () | |
b3b9301e | 13890 | { |
9018be22 | 13891 | gdb::optional<gdb::char_vector> text |
328d42d8 SM |
13892 | = target_read_stralloc (current_inferior ()->top_target (), |
13893 | TARGET_OBJECT_TRACEFRAME_INFO, | |
b7b030ad | 13894 | NULL); |
9018be22 SM |
13895 | if (text) |
13896 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13897 | |
13898 | return NULL; | |
13899 | } | |
13900 | ||
405f8e94 SS |
13901 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13902 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13903 | if the packet is not supported, and 0 if the minimum instruction | |
13904 | length is unknown. */ | |
13905 | ||
f6ac5f3d PA |
13906 | int |
13907 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13908 | { |
13909 | struct remote_state *rs = get_remote_state (); | |
13910 | char *reply; | |
13911 | ||
e886a173 PA |
13912 | /* If we're not debugging a process yet, the IPA can't be |
13913 | loaded. */ | |
55f6301a | 13914 | if (!target_has_execution ()) |
e886a173 PA |
13915 | return 0; |
13916 | ||
13917 | /* Make sure the remote is pointing at the right process. */ | |
13918 | set_general_process (); | |
13919 | ||
8d64371b | 13920 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13921 | putpkt (rs->buf); |
b6bb3468 | 13922 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13923 | if (*reply == '\0') |
13924 | return -1; | |
13925 | else | |
13926 | { | |
13927 | ULONGEST min_insn_len; | |
13928 | ||
13929 | unpack_varlen_hex (reply, &min_insn_len); | |
13930 | ||
13931 | return (int) min_insn_len; | |
13932 | } | |
13933 | } | |
13934 | ||
f6ac5f3d PA |
13935 | void |
13936 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13937 | { |
4082afcc | 13938 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13939 | { |
13940 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13941 | char *buf = rs->buf.data (); |
13942 | char *endbuf = buf + get_remote_packet_size (); | |
f6f899bf HAQ |
13943 | enum packet_result result; |
13944 | ||
13945 | gdb_assert (val >= 0 || val == -1); | |
13946 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13947 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13948 | if (val < 0) | |
13949 | { | |
13950 | *buf++ = '-'; | |
dda83cd7 | 13951 | buf += hexnumstr (buf, (ULONGEST) -val); |
f6f899bf HAQ |
13952 | } |
13953 | else | |
13954 | buf += hexnumstr (buf, (ULONGEST) val); | |
13955 | ||
13956 | putpkt (rs->buf); | |
b6bb3468 | 13957 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13958 | result = packet_ok (rs->buf, |
13959 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13960 | ||
13961 | if (result != PACKET_OK) | |
8d64371b | 13962 | warning (_("Bogus reply from target: %s"), rs->buf.data ()); |
f6f899bf HAQ |
13963 | } |
13964 | } | |
13965 | ||
57810aa7 | 13966 | bool |
f6ac5f3d PA |
13967 | remote_target::set_trace_notes (const char *user, const char *notes, |
13968 | const char *stop_notes) | |
f196051f SS |
13969 | { |
13970 | struct remote_state *rs = get_remote_state (); | |
13971 | char *reply; | |
8d64371b TT |
13972 | char *buf = rs->buf.data (); |
13973 | char *endbuf = buf + get_remote_packet_size (); | |
f196051f SS |
13974 | int nbytes; |
13975 | ||
13976 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13977 | if (user) | |
13978 | { | |
13979 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13980 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13981 | buf += 2 * nbytes; |
13982 | *buf++ = ';'; | |
13983 | } | |
13984 | if (notes) | |
13985 | { | |
13986 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13987 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13988 | buf += 2 * nbytes; |
13989 | *buf++ = ';'; | |
13990 | } | |
13991 | if (stop_notes) | |
13992 | { | |
13993 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13994 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13995 | buf += 2 * nbytes; |
13996 | *buf++ = ';'; | |
13997 | } | |
13998 | /* Ensure the buffer is terminated. */ | |
13999 | *buf = '\0'; | |
14000 | ||
14001 | putpkt (rs->buf); | |
b6bb3468 | 14002 | reply = remote_get_noisy_reply (); |
f196051f | 14003 | if (*reply == '\0') |
57810aa7 | 14004 | return false; |
f196051f SS |
14005 | |
14006 | if (strcmp (reply, "OK") != 0) | |
14007 | error (_("Bogus reply from target: %s"), reply); | |
14008 | ||
57810aa7 | 14009 | return true; |
f196051f SS |
14010 | } |
14011 | ||
57810aa7 PA |
14012 | bool |
14013 | remote_target::use_agent (bool use) | |
d1feda86 | 14014 | { |
4082afcc | 14015 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
14016 | { |
14017 | struct remote_state *rs = get_remote_state (); | |
14018 | ||
14019 | /* If the stub supports QAgent. */ | |
8d64371b | 14020 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 | 14021 | putpkt (rs->buf); |
8d64371b | 14022 | getpkt (&rs->buf, 0); |
d1feda86 | 14023 | |
8d64371b | 14024 | if (strcmp (rs->buf.data (), "OK") == 0) |
d1feda86 | 14025 | { |
f6ac5f3d | 14026 | ::use_agent = use; |
57810aa7 | 14027 | return true; |
d1feda86 YQ |
14028 | } |
14029 | } | |
14030 | ||
57810aa7 | 14031 | return false; |
d1feda86 YQ |
14032 | } |
14033 | ||
57810aa7 | 14034 | bool |
f6ac5f3d | 14035 | remote_target::can_use_agent () |
d1feda86 | 14036 | { |
4082afcc | 14037 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
14038 | } |
14039 | ||
9accd112 MM |
14040 | struct btrace_target_info |
14041 | { | |
14042 | /* The ptid of the traced thread. */ | |
14043 | ptid_t ptid; | |
f4abbc16 MM |
14044 | |
14045 | /* The obtained branch trace configuration. */ | |
14046 | struct btrace_config conf; | |
9accd112 MM |
14047 | }; |
14048 | ||
f4abbc16 MM |
14049 | /* Reset our idea of our target's btrace configuration. */ |
14050 | ||
14051 | static void | |
6b8edb51 | 14052 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 14053 | { |
f4abbc16 MM |
14054 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
14055 | } | |
14056 | ||
f4abbc16 MM |
14057 | /* Synchronize the configuration with the target. */ |
14058 | ||
6b8edb51 PA |
14059 | void |
14060 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 14061 | { |
d33501a5 MM |
14062 | struct packet_config *packet; |
14063 | struct remote_state *rs; | |
14064 | char *buf, *pos, *endbuf; | |
14065 | ||
14066 | rs = get_remote_state (); | |
8d64371b | 14067 | buf = rs->buf.data (); |
d33501a5 MM |
14068 | endbuf = buf + get_remote_packet_size (); |
14069 | ||
14070 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
14071 | if (packet_config_support (packet) == PACKET_ENABLE | |
14072 | && conf->bts.size != rs->btrace_config.bts.size) | |
14073 | { | |
14074 | pos = buf; | |
14075 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
dda83cd7 | 14076 | conf->bts.size); |
d33501a5 MM |
14077 | |
14078 | putpkt (buf); | |
8d64371b | 14079 | getpkt (&rs->buf, 0); |
d33501a5 MM |
14080 | |
14081 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
14082 | { | |
14083 | if (buf[0] == 'E' && buf[1] == '.') | |
14084 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
14085 | else | |
14086 | error (_("Failed to configure the BTS buffer size.")); | |
14087 | } | |
14088 | ||
14089 | rs->btrace_config.bts.size = conf->bts.size; | |
14090 | } | |
b20a6524 MM |
14091 | |
14092 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
14093 | if (packet_config_support (packet) == PACKET_ENABLE | |
14094 | && conf->pt.size != rs->btrace_config.pt.size) | |
14095 | { | |
14096 | pos = buf; | |
14097 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
dda83cd7 | 14098 | conf->pt.size); |
b20a6524 MM |
14099 | |
14100 | putpkt (buf); | |
8d64371b | 14101 | getpkt (&rs->buf, 0); |
b20a6524 MM |
14102 | |
14103 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
14104 | { | |
14105 | if (buf[0] == 'E' && buf[1] == '.') | |
14106 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
14107 | else | |
14108 | error (_("Failed to configure the trace buffer size.")); | |
14109 | } | |
14110 | ||
14111 | rs->btrace_config.pt.size = conf->pt.size; | |
14112 | } | |
f4abbc16 MM |
14113 | } |
14114 | ||
0d8cbc5f | 14115 | /* Read TP's btrace configuration from the target and store it into CONF. */ |
f4abbc16 MM |
14116 | |
14117 | static void | |
0d8cbc5f | 14118 | btrace_read_config (thread_info *tp, struct btrace_config *conf) |
f4abbc16 | 14119 | { |
0d8cbc5f MM |
14120 | /* target_read_stralloc relies on INFERIOR_PTID. */ |
14121 | scoped_restore_current_thread restore_thread; | |
14122 | switch_to_thread (tp); | |
14123 | ||
9018be22 | 14124 | gdb::optional<gdb::char_vector> xml |
328d42d8 SM |
14125 | = target_read_stralloc (current_inferior ()->top_target (), |
14126 | TARGET_OBJECT_BTRACE_CONF, ""); | |
9018be22 SM |
14127 | if (xml) |
14128 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
14129 | } |
14130 | ||
c0272db5 TW |
14131 | /* Maybe reopen target btrace. */ |
14132 | ||
6b8edb51 PA |
14133 | void |
14134 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
14135 | { |
14136 | struct remote_state *rs = get_remote_state (); | |
c0272db5 | 14137 | int btrace_target_pushed = 0; |
15766370 | 14138 | #if !defined (HAVE_LIBIPT) |
c0272db5 | 14139 | int warned = 0; |
15766370 | 14140 | #endif |
c0272db5 | 14141 | |
aedbe3bb CM |
14142 | /* Don't bother walking the entirety of the remote thread list when |
14143 | we know the feature isn't supported by the remote. */ | |
14144 | if (packet_support (PACKET_qXfer_btrace_conf) != PACKET_ENABLE) | |
14145 | return; | |
14146 | ||
5b6d1e4f | 14147 | for (thread_info *tp : all_non_exited_threads (this)) |
c0272db5 | 14148 | { |
c0272db5 | 14149 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); |
0d8cbc5f | 14150 | btrace_read_config (tp, &rs->btrace_config); |
c0272db5 TW |
14151 | |
14152 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
14153 | continue; | |
14154 | ||
14155 | #if !defined (HAVE_LIBIPT) | |
14156 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
14157 | { | |
14158 | if (!warned) | |
14159 | { | |
14160 | warned = 1; | |
c4e12631 MM |
14161 | warning (_("Target is recording using Intel Processor Trace " |
14162 | "but support was disabled at compile time.")); | |
c0272db5 TW |
14163 | } |
14164 | ||
14165 | continue; | |
14166 | } | |
14167 | #endif /* !defined (HAVE_LIBIPT) */ | |
14168 | ||
14169 | /* Push target, once, but before anything else happens. This way our | |
14170 | changes to the threads will be cleaned up by unpushing the target | |
14171 | in case btrace_read_config () throws. */ | |
14172 | if (!btrace_target_pushed) | |
14173 | { | |
14174 | btrace_target_pushed = 1; | |
14175 | record_btrace_push_target (); | |
6cb06a8c TT |
14176 | gdb_printf (_("Target is recording using %s.\n"), |
14177 | btrace_format_string (rs->btrace_config.format)); | |
c0272db5 TW |
14178 | } |
14179 | ||
14180 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
14181 | tp->btrace.target->ptid = tp->ptid; | |
14182 | tp->btrace.target->conf = rs->btrace_config; | |
14183 | } | |
c0272db5 TW |
14184 | } |
14185 | ||
9accd112 MM |
14186 | /* Enable branch tracing. */ |
14187 | ||
f6ac5f3d | 14188 | struct btrace_target_info * |
696c0d5e MM |
14189 | remote_target::enable_btrace (thread_info *tp, |
14190 | const struct btrace_config *conf) | |
9accd112 MM |
14191 | { |
14192 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 14193 | struct packet_config *packet = NULL; |
9accd112 | 14194 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
14195 | char *buf = rs->buf.data (); |
14196 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14197 | |
b20a6524 MM |
14198 | switch (conf->format) |
14199 | { | |
14200 | case BTRACE_FORMAT_BTS: | |
14201 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
14202 | break; | |
14203 | ||
14204 | case BTRACE_FORMAT_PT: | |
14205 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
14206 | break; | |
14207 | } | |
14208 | ||
14209 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
14210 | error (_("Target does not support branch tracing.")); |
14211 | ||
f4abbc16 MM |
14212 | btrace_sync_conf (conf); |
14213 | ||
696c0d5e | 14214 | ptid_t ptid = tp->ptid; |
9accd112 MM |
14215 | set_general_thread (ptid); |
14216 | ||
14217 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
14218 | putpkt (rs->buf); | |
8d64371b | 14219 | getpkt (&rs->buf, 0); |
9accd112 MM |
14220 | |
14221 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
14222 | { | |
14223 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14224 | error (_("Could not enable branch tracing for %s: %s"), | |
a068643d | 14225 | target_pid_to_str (ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14226 | else |
14227 | error (_("Could not enable branch tracing for %s."), | |
a068643d | 14228 | target_pid_to_str (ptid).c_str ()); |
9accd112 MM |
14229 | } |
14230 | ||
8d749320 | 14231 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
14232 | tinfo->ptid = ptid; |
14233 | ||
f4abbc16 MM |
14234 | /* If we fail to read the configuration, we lose some information, but the |
14235 | tracing itself is not impacted. */ | |
a70b8144 | 14236 | try |
492d29ea | 14237 | { |
0d8cbc5f | 14238 | btrace_read_config (tp, &tinfo->conf); |
492d29ea | 14239 | } |
230d2906 | 14240 | catch (const gdb_exception_error &err) |
492d29ea PA |
14241 | { |
14242 | if (err.message != NULL) | |
3d6e9d23 | 14243 | warning ("%s", err.what ()); |
492d29ea | 14244 | } |
f4abbc16 | 14245 | |
9accd112 MM |
14246 | return tinfo; |
14247 | } | |
14248 | ||
14249 | /* Disable branch tracing. */ | |
14250 | ||
f6ac5f3d PA |
14251 | void |
14252 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14253 | { |
14254 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
14255 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
14256 | char *buf = rs->buf.data (); |
14257 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14258 | |
4082afcc | 14259 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14260 | error (_("Target does not support branch tracing.")); |
14261 | ||
14262 | set_general_thread (tinfo->ptid); | |
14263 | ||
14264 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
14265 | putpkt (rs->buf); | |
8d64371b | 14266 | getpkt (&rs->buf, 0); |
9accd112 MM |
14267 | |
14268 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
14269 | { | |
14270 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14271 | error (_("Could not disable branch tracing for %s: %s"), | |
a068643d | 14272 | target_pid_to_str (tinfo->ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14273 | else |
14274 | error (_("Could not disable branch tracing for %s."), | |
a068643d | 14275 | target_pid_to_str (tinfo->ptid).c_str ()); |
9accd112 MM |
14276 | } |
14277 | ||
14278 | xfree (tinfo); | |
14279 | } | |
14280 | ||
14281 | /* Teardown branch tracing. */ | |
14282 | ||
f6ac5f3d PA |
14283 | void |
14284 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14285 | { |
14286 | /* We must not talk to the target during teardown. */ | |
14287 | xfree (tinfo); | |
14288 | } | |
14289 | ||
14290 | /* Read the branch trace. */ | |
14291 | ||
f6ac5f3d PA |
14292 | enum btrace_error |
14293 | remote_target::read_btrace (struct btrace_data *btrace, | |
14294 | struct btrace_target_info *tinfo, | |
14295 | enum btrace_read_type type) | |
9accd112 MM |
14296 | { |
14297 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 14298 | const char *annex; |
9accd112 | 14299 | |
4082afcc | 14300 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14301 | error (_("Target does not support branch tracing.")); |
14302 | ||
14303 | #if !defined(HAVE_LIBEXPAT) | |
14304 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
14305 | #endif | |
14306 | ||
14307 | switch (type) | |
14308 | { | |
864089d2 | 14309 | case BTRACE_READ_ALL: |
9accd112 MM |
14310 | annex = "all"; |
14311 | break; | |
864089d2 | 14312 | case BTRACE_READ_NEW: |
9accd112 MM |
14313 | annex = "new"; |
14314 | break; | |
969c39fb MM |
14315 | case BTRACE_READ_DELTA: |
14316 | annex = "delta"; | |
14317 | break; | |
9accd112 MM |
14318 | default: |
14319 | internal_error (__FILE__, __LINE__, | |
14320 | _("Bad branch tracing read type: %u."), | |
14321 | (unsigned int) type); | |
14322 | } | |
14323 | ||
9018be22 | 14324 | gdb::optional<gdb::char_vector> xml |
328d42d8 SM |
14325 | = target_read_stralloc (current_inferior ()->top_target (), |
14326 | TARGET_OBJECT_BTRACE, annex); | |
9018be22 | 14327 | if (!xml) |
969c39fb | 14328 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 14329 | |
9018be22 | 14330 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 14331 | |
969c39fb | 14332 | return BTRACE_ERR_NONE; |
9accd112 MM |
14333 | } |
14334 | ||
f6ac5f3d PA |
14335 | const struct btrace_config * |
14336 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
14337 | { |
14338 | return &tinfo->conf; | |
14339 | } | |
14340 | ||
57810aa7 | 14341 | bool |
f6ac5f3d | 14342 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 14343 | { |
4082afcc PA |
14344 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
14345 | == PACKET_ENABLE); | |
ced63ec0 GB |
14346 | } |
14347 | ||
9dd130a0 TT |
14348 | /* Implementation of to_load. */ |
14349 | ||
f6ac5f3d PA |
14350 | void |
14351 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
14352 | { |
14353 | generic_load (name, from_tty); | |
14354 | } | |
14355 | ||
c78fa86a GB |
14356 | /* Accepts an integer PID; returns a string representing a file that |
14357 | can be opened on the remote side to get the symbols for the child | |
14358 | process. Returns NULL if the operation is not supported. */ | |
14359 | ||
0e90c441 | 14360 | const char * |
f6ac5f3d | 14361 | remote_target::pid_to_exec_file (int pid) |
c78fa86a | 14362 | { |
9018be22 | 14363 | static gdb::optional<gdb::char_vector> filename; |
835205d0 | 14364 | char *annex = NULL; |
c78fa86a GB |
14365 | |
14366 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
14367 | return NULL; | |
14368 | ||
5b6d1e4f | 14369 | inferior *inf = find_inferior_pid (this, pid); |
835205d0 GB |
14370 | if (inf == NULL) |
14371 | internal_error (__FILE__, __LINE__, | |
14372 | _("not currently attached to process %d"), pid); | |
14373 | ||
14374 | if (!inf->fake_pid_p) | |
14375 | { | |
14376 | const int annex_size = 9; | |
14377 | ||
224c3ddb | 14378 | annex = (char *) alloca (annex_size); |
835205d0 GB |
14379 | xsnprintf (annex, annex_size, "%x", pid); |
14380 | } | |
14381 | ||
328d42d8 | 14382 | filename = target_read_stralloc (current_inferior ()->top_target (), |
c78fa86a GB |
14383 | TARGET_OBJECT_EXEC_FILE, annex); |
14384 | ||
9018be22 | 14385 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
14386 | } |
14387 | ||
750ce8d1 YQ |
14388 | /* Implement the to_can_do_single_step target_ops method. */ |
14389 | ||
f6ac5f3d PA |
14390 | int |
14391 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
14392 | { |
14393 | /* We can only tell whether target supports single step or not by | |
14394 | supported s and S vCont actions if the stub supports vContSupported | |
14395 | feature. If the stub doesn't support vContSupported feature, | |
14396 | we have conservatively to think target doesn't supports single | |
14397 | step. */ | |
14398 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
14399 | { | |
14400 | struct remote_state *rs = get_remote_state (); | |
14401 | ||
14402 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
6b8edb51 | 14403 | remote_vcont_probe (); |
750ce8d1 YQ |
14404 | |
14405 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
14406 | } | |
14407 | else | |
14408 | return 0; | |
14409 | } | |
14410 | ||
3a00c802 PA |
14411 | /* Implementation of the to_execution_direction method for the remote |
14412 | target. */ | |
14413 | ||
f6ac5f3d PA |
14414 | enum exec_direction_kind |
14415 | remote_target::execution_direction () | |
3a00c802 PA |
14416 | { |
14417 | struct remote_state *rs = get_remote_state (); | |
14418 | ||
14419 | return rs->last_resume_exec_dir; | |
14420 | } | |
14421 | ||
f6327dcb KB |
14422 | /* Return pointer to the thread_info struct which corresponds to |
14423 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
14424 | ||
f6ac5f3d PA |
14425 | thread_info * |
14426 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
14427 | int handle_len, | |
14428 | inferior *inf) | |
f6327dcb | 14429 | { |
5b6d1e4f | 14430 | for (thread_info *tp : all_non_exited_threads (this)) |
f6327dcb | 14431 | { |
7aabaf9d | 14432 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
14433 | |
14434 | if (tp->inf == inf && priv != NULL) | |
dda83cd7 | 14435 | { |
7aabaf9d | 14436 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 14437 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
dda83cd7 | 14438 | handle_len, priv->thread_handle.size ()); |
7aabaf9d | 14439 | if (memcmp (thread_handle, priv->thread_handle.data (), |
dda83cd7 | 14440 | handle_len) == 0) |
f6327dcb KB |
14441 | return tp; |
14442 | } | |
14443 | } | |
14444 | ||
14445 | return NULL; | |
14446 | } | |
14447 | ||
3d6c6204 KB |
14448 | gdb::byte_vector |
14449 | remote_target::thread_info_to_thread_handle (struct thread_info *tp) | |
14450 | { | |
14451 | remote_thread_info *priv = get_remote_thread_info (tp); | |
14452 | return priv->thread_handle; | |
14453 | } | |
14454 | ||
57810aa7 | 14455 | bool |
f6ac5f3d | 14456 | remote_target::can_async_p () |
6426a772 | 14457 | { |
fce6cd34 AB |
14458 | /* This flag should be checked in the common target.c code. */ |
14459 | gdb_assert (target_async_permitted); | |
75c99385 | 14460 | |
fce6cd34 AB |
14461 | /* We're async whenever the serial device can. */ |
14462 | struct remote_state *rs = get_remote_state (); | |
5d93a237 | 14463 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
14464 | } |
14465 | ||
57810aa7 | 14466 | bool |
f6ac5f3d | 14467 | remote_target::is_async_p () |
6426a772 | 14468 | { |
23860348 | 14469 | /* We're async whenever the serial device is. */ |
7054fa5b | 14470 | struct remote_state *rs = get_remote_state (); |
5d93a237 | 14471 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
14472 | } |
14473 | ||
2acceee2 JM |
14474 | /* Pass the SERIAL event on and up to the client. One day this code |
14475 | will be able to delay notifying the client of an event until the | |
23860348 | 14476 | point where an entire packet has been received. */ |
2acceee2 | 14477 | |
2acceee2 JM |
14478 | static serial_event_ftype remote_async_serial_handler; |
14479 | ||
6426a772 | 14480 | static void |
819cc324 | 14481 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14482 | { |
2acceee2 JM |
14483 | /* Don't propogate error information up to the client. Instead let |
14484 | the client find out about the error by querying the target. */ | |
b1a35af2 | 14485 | inferior_event_handler (INF_REG_EVENT); |
2acceee2 JM |
14486 | } |
14487 | ||
74531fed PA |
14488 | static void |
14489 | remote_async_inferior_event_handler (gdb_client_data data) | |
14490 | { | |
6b36ddeb | 14491 | inferior_event_handler (INF_REG_EVENT); |
74531fed PA |
14492 | } |
14493 | ||
5b6d1e4f PA |
14494 | int |
14495 | remote_target::async_wait_fd () | |
14496 | { | |
14497 | struct remote_state *rs = get_remote_state (); | |
14498 | return rs->remote_desc->fd; | |
14499 | } | |
14500 | ||
f6ac5f3d | 14501 | void |
4a570176 | 14502 | remote_target::async (bool enable) |
2acceee2 | 14503 | { |
5d93a237 TT |
14504 | struct remote_state *rs = get_remote_state (); |
14505 | ||
6a3753b3 | 14506 | if (enable) |
2acceee2 | 14507 | { |
88b496c3 | 14508 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14509 | |
14510 | /* If there are pending events in the stop reply queue tell the | |
14511 | event loop to process them. */ | |
953edf2b | 14512 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 14513 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14514 | /* For simplicity, below we clear the pending events token |
14515 | without remembering whether it is marked, so here we always | |
14516 | mark it. If there's actually no pending notification to | |
14517 | process, this ends up being a no-op (other than a spurious | |
14518 | event-loop wakeup). */ | |
14519 | if (target_is_non_stop_p ()) | |
14520 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14521 | } |
14522 | else | |
b7d2e916 PA |
14523 | { |
14524 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14525 | /* If the core is disabling async, it doesn't want to be |
14526 | disturbed with target events. Clear all async event sources | |
14527 | too. */ | |
6b8edb51 | 14528 | clear_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14529 | if (target_is_non_stop_p ()) |
14530 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14531 | } |
6426a772 JM |
14532 | } |
14533 | ||
65706a29 PA |
14534 | /* Implementation of the to_thread_events method. */ |
14535 | ||
f6ac5f3d PA |
14536 | void |
14537 | remote_target::thread_events (int enable) | |
65706a29 PA |
14538 | { |
14539 | struct remote_state *rs = get_remote_state (); | |
14540 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
14541 | |
14542 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
14543 | return; | |
14544 | ||
8d64371b | 14545 | xsnprintf (rs->buf.data (), size, "QThreadEvents:%x", enable ? 1 : 0); |
65706a29 | 14546 | putpkt (rs->buf); |
8d64371b | 14547 | getpkt (&rs->buf, 0); |
65706a29 PA |
14548 | |
14549 | switch (packet_ok (rs->buf, | |
14550 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
14551 | { | |
14552 | case PACKET_OK: | |
8d64371b TT |
14553 | if (strcmp (rs->buf.data (), "OK") != 0) |
14554 | error (_("Remote refused setting thread events: %s"), rs->buf.data ()); | |
65706a29 PA |
14555 | break; |
14556 | case PACKET_ERROR: | |
8d64371b | 14557 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
65706a29 PA |
14558 | break; |
14559 | case PACKET_UNKNOWN: | |
14560 | break; | |
14561 | } | |
14562 | } | |
14563 | ||
d471ea57 | 14564 | static void |
981a3fb3 | 14565 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14566 | { |
37a105a1 | 14567 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14568 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14569 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14570 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14571 | |
2e783024 | 14572 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14573 | for (; list != NULL; list = list->next) |
14574 | if (strcmp (list->name, "Z-packet") == 0) | |
14575 | continue; | |
427c3a89 DJ |
14576 | else if (list->type == not_set_cmd) |
14577 | /* Alias commands are exactly like the original, except they | |
14578 | don't have the normal type. */ | |
14579 | continue; | |
14580 | else | |
37a105a1 | 14581 | { |
2e783024 | 14582 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14583 | |
112e8700 SM |
14584 | uiout->field_string ("name", list->name); |
14585 | uiout->text (": "); | |
427c3a89 | 14586 | if (list->type == show_cmd) |
f5c4fcd9 | 14587 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14588 | else |
14589 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 14590 | } |
d471ea57 | 14591 | } |
5a2468f5 | 14592 | |
0f71a2f6 | 14593 | |
23860348 | 14594 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
14595 | static void |
14596 | remote_new_objfile (struct objfile *objfile) | |
14597 | { | |
06c7226e SM |
14598 | /* The objfile change happened in that program space. */ |
14599 | program_space *pspace = current_program_space; | |
5d93a237 | 14600 | |
06c7226e SM |
14601 | /* The affected program space is possibly shared by multiple inferiors. |
14602 | Consider sending a qSymbol packet for each of the inferiors using that | |
14603 | program space. */ | |
14604 | for (inferior *inf : all_inferiors ()) | |
14605 | { | |
14606 | if (inf->pspace != pspace) | |
14607 | continue; | |
122373f7 | 14608 | |
06c7226e SM |
14609 | /* Check whether the inferior's process target is a remote target. */ |
14610 | remote_target *remote = as_remote_target (inf->process_target ()); | |
14611 | if (remote == nullptr) | |
14612 | continue; | |
14613 | ||
14614 | /* When we are attaching or handling a fork child and the shared library | |
14615 | subsystem reads the list of loaded libraries, we receive new objfile | |
14616 | events in between each found library. The libraries are read in an | |
14617 | undefined order, so if we gave the remote side a chance to look up | |
14618 | symbols between each objfile, we might give it an inconsistent picture | |
14619 | of the inferior. It could appear that a library A appears loaded but | |
14620 | a library B does not, even though library A requires library B. That | |
14621 | would present a state that couldn't normally exist in the inferior. | |
14622 | ||
14623 | So, skip these events, we'll give the remote a chance to look up | |
14624 | symbols once all the loaded libraries and their symbols are known to | |
14625 | GDB. */ | |
14626 | if (inf->in_initial_library_scan) | |
14627 | continue; | |
14628 | ||
14629 | if (!remote->has_execution (inf)) | |
14630 | continue; | |
14631 | ||
14632 | /* Need to switch to a specific thread, because remote_check_symbols will | |
14633 | set the general thread using INFERIOR_PTID. | |
122373f7 | 14634 | |
06c7226e SM |
14635 | It's possible to have inferiors with no thread here, because we are |
14636 | called very early in the connection process, while the inferior is | |
14637 | being set up, before threads are added. Just skip it, start_remote_1 | |
14638 | also calls remote_check_symbols when it's done setting things up. */ | |
14639 | thread_info *thread = any_thread_of_inferior (inf); | |
14640 | if (thread != nullptr) | |
14641 | { | |
14642 | scoped_restore_current_thread restore_thread; | |
14643 | switch_to_thread (thread); | |
14644 | remote->remote_check_symbols (); | |
14645 | } | |
14646 | } | |
dc8acb97 MS |
14647 | } |
14648 | ||
00bf0b85 SS |
14649 | /* Pull all the tracepoints defined on the target and create local |
14650 | data structures representing them. We don't want to create real | |
14651 | tracepoints yet, we don't want to mess up the user's existing | |
14652 | collection. */ | |
14653 | ||
f6ac5f3d PA |
14654 | int |
14655 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14656 | { |
00bf0b85 SS |
14657 | struct remote_state *rs = get_remote_state (); |
14658 | char *p; | |
d5551862 | 14659 | |
00bf0b85 SS |
14660 | /* Ask for a first packet of tracepoint definition. */ |
14661 | putpkt ("qTfP"); | |
8d64371b TT |
14662 | getpkt (&rs->buf, 0); |
14663 | p = rs->buf.data (); | |
00bf0b85 | 14664 | while (*p && *p != 'l') |
d5551862 | 14665 | { |
00bf0b85 SS |
14666 | parse_tracepoint_definition (p, utpp); |
14667 | /* Ask for another packet of tracepoint definition. */ | |
14668 | putpkt ("qTsP"); | |
8d64371b TT |
14669 | getpkt (&rs->buf, 0); |
14670 | p = rs->buf.data (); | |
d5551862 | 14671 | } |
00bf0b85 | 14672 | return 0; |
d5551862 SS |
14673 | } |
14674 | ||
f6ac5f3d PA |
14675 | int |
14676 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14677 | { |
00bf0b85 | 14678 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14679 | char *p; |
d5551862 | 14680 | |
00bf0b85 SS |
14681 | /* Ask for a first packet of variable definition. */ |
14682 | putpkt ("qTfV"); | |
8d64371b TT |
14683 | getpkt (&rs->buf, 0); |
14684 | p = rs->buf.data (); | |
00bf0b85 | 14685 | while (*p && *p != 'l') |
d5551862 | 14686 | { |
00bf0b85 SS |
14687 | parse_tsv_definition (p, utsvp); |
14688 | /* Ask for another packet of variable definition. */ | |
14689 | putpkt ("qTsV"); | |
8d64371b TT |
14690 | getpkt (&rs->buf, 0); |
14691 | p = rs->buf.data (); | |
d5551862 | 14692 | } |
00bf0b85 | 14693 | return 0; |
d5551862 SS |
14694 | } |
14695 | ||
c1e36e3e PA |
14696 | /* The "set/show range-stepping" show hook. */ |
14697 | ||
14698 | static void | |
14699 | show_range_stepping (struct ui_file *file, int from_tty, | |
14700 | struct cmd_list_element *c, | |
14701 | const char *value) | |
14702 | { | |
6cb06a8c TT |
14703 | gdb_printf (file, |
14704 | _("Debugger's willingness to use range stepping " | |
14705 | "is %s.\n"), value); | |
c1e36e3e PA |
14706 | } |
14707 | ||
6b8edb51 PA |
14708 | /* Return true if the vCont;r action is supported by the remote |
14709 | stub. */ | |
14710 | ||
14711 | bool | |
14712 | remote_target::vcont_r_supported () | |
14713 | { | |
14714 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
14715 | remote_vcont_probe (); | |
14716 | ||
14717 | return (packet_support (PACKET_vCont) == PACKET_ENABLE | |
14718 | && get_remote_state ()->supports_vCont.r); | |
14719 | } | |
14720 | ||
c1e36e3e PA |
14721 | /* The "set/show range-stepping" set hook. */ |
14722 | ||
14723 | static void | |
eb4c3f4a | 14724 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14725 | struct cmd_list_element *c) |
14726 | { | |
6b8edb51 PA |
14727 | /* When enabling, check whether range stepping is actually supported |
14728 | by the target, and warn if not. */ | |
c1e36e3e PA |
14729 | if (use_range_stepping) |
14730 | { | |
6b8edb51 PA |
14731 | remote_target *remote = get_current_remote_target (); |
14732 | if (remote == NULL | |
14733 | || !remote->vcont_r_supported ()) | |
14734 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
14735 | } |
14736 | } | |
14737 | ||
baf2b57f SM |
14738 | static void |
14739 | show_remote_debug (struct ui_file *file, int from_tty, | |
14740 | struct cmd_list_element *c, const char *value) | |
14741 | { | |
6cb06a8c TT |
14742 | gdb_printf (file, _("Debugging of remote protocol is %s.\n"), |
14743 | value); | |
baf2b57f SM |
14744 | } |
14745 | ||
14746 | static void | |
14747 | show_remote_timeout (struct ui_file *file, int from_tty, | |
14748 | struct cmd_list_element *c, const char *value) | |
14749 | { | |
6cb06a8c TT |
14750 | gdb_printf (file, |
14751 | _("Timeout limit to wait for target to respond is %s.\n"), | |
14752 | value); | |
baf2b57f SM |
14753 | } |
14754 | ||
dbe692af LM |
14755 | /* Implement the "supports_memory_tagging" target_ops method. */ |
14756 | ||
14757 | bool | |
14758 | remote_target::supports_memory_tagging () | |
14759 | { | |
2c2e7f87 LM |
14760 | return remote_memory_tagging_p (); |
14761 | } | |
14762 | ||
14763 | /* Create the qMemTags packet given ADDRESS, LEN and TYPE. */ | |
14764 | ||
14765 | static void | |
14766 | create_fetch_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
14767 | size_t len, int type) | |
14768 | { | |
14769 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
14770 | ||
14771 | std::string request = string_printf ("qMemTags:%s,%s:%s", | |
14772 | phex_nz (address, addr_size), | |
14773 | phex_nz (len, sizeof (len)), | |
14774 | phex_nz (type, sizeof (type))); | |
14775 | ||
14776 | strcpy (packet.data (), request.c_str ()); | |
14777 | } | |
14778 | ||
14779 | /* Parse the qMemTags packet reply into TAGS. | |
14780 | ||
14781 | Return true if successful, false otherwise. */ | |
14782 | ||
14783 | static bool | |
14784 | parse_fetch_memtags_reply (const gdb::char_vector &reply, | |
14785 | gdb::byte_vector &tags) | |
14786 | { | |
14787 | if (reply.empty () || reply[0] == 'E' || reply[0] != 'm') | |
14788 | return false; | |
14789 | ||
14790 | /* Copy the tag data. */ | |
14791 | tags = hex2bin (reply.data () + 1); | |
14792 | ||
14793 | return true; | |
14794 | } | |
14795 | ||
14796 | /* Create the QMemTags packet given ADDRESS, LEN, TYPE and TAGS. */ | |
14797 | ||
14798 | static void | |
14799 | create_store_memtags_request (gdb::char_vector &packet, CORE_ADDR address, | |
14800 | size_t len, int type, | |
14801 | const gdb::byte_vector &tags) | |
14802 | { | |
14803 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
14804 | ||
14805 | /* Put together the main packet, address and length. */ | |
14806 | std::string request = string_printf ("QMemTags:%s,%s:%s:", | |
14807 | phex_nz (address, addr_size), | |
14808 | phex_nz (len, sizeof (len)), | |
14809 | phex_nz (type, sizeof (type))); | |
14810 | request += bin2hex (tags.data (), tags.size ()); | |
14811 | ||
14812 | /* Check if we have exceeded the maximum packet size. */ | |
14813 | if (packet.size () < request.length ()) | |
14814 | error (_("Contents too big for packet QMemTags.")); | |
14815 | ||
14816 | strcpy (packet.data (), request.c_str ()); | |
dbe692af LM |
14817 | } |
14818 | ||
14819 | /* Implement the "fetch_memtags" target_ops method. */ | |
14820 | ||
14821 | bool | |
14822 | remote_target::fetch_memtags (CORE_ADDR address, size_t len, | |
14823 | gdb::byte_vector &tags, int type) | |
14824 | { | |
2c2e7f87 LM |
14825 | /* Make sure the qMemTags packet is supported. */ |
14826 | if (!remote_memory_tagging_p ()) | |
14827 | gdb_assert_not_reached ("remote fetch_memtags called with packet disabled"); | |
14828 | ||
14829 | struct remote_state *rs = get_remote_state (); | |
14830 | ||
14831 | create_fetch_memtags_request (rs->buf, address, len, type); | |
14832 | ||
14833 | putpkt (rs->buf); | |
14834 | getpkt (&rs->buf, 0); | |
14835 | ||
14836 | return parse_fetch_memtags_reply (rs->buf, tags); | |
dbe692af LM |
14837 | } |
14838 | ||
14839 | /* Implement the "store_memtags" target_ops method. */ | |
14840 | ||
14841 | bool | |
14842 | remote_target::store_memtags (CORE_ADDR address, size_t len, | |
14843 | const gdb::byte_vector &tags, int type) | |
14844 | { | |
2c2e7f87 LM |
14845 | /* Make sure the QMemTags packet is supported. */ |
14846 | if (!remote_memory_tagging_p ()) | |
14847 | gdb_assert_not_reached ("remote store_memtags called with packet disabled"); | |
14848 | ||
14849 | struct remote_state *rs = get_remote_state (); | |
14850 | ||
14851 | create_store_memtags_request (rs->buf, address, len, type, tags); | |
14852 | ||
14853 | putpkt (rs->buf); | |
14854 | getpkt (&rs->buf, 0); | |
14855 | ||
14856 | /* Verify if the request was successful. */ | |
14857 | return packet_check_result (rs->buf.data ()) == PACKET_OK; | |
dbe692af LM |
14858 | } |
14859 | ||
c39ebbf4 TV |
14860 | /* Return true if remote target T is non-stop. */ |
14861 | ||
14862 | bool | |
14863 | remote_target_is_non_stop_p (remote_target *t) | |
14864 | { | |
14865 | scoped_restore_current_thread restore_thread; | |
14866 | switch_to_target_no_thread (t); | |
14867 | ||
14868 | return target_is_non_stop_p (); | |
14869 | } | |
14870 | ||
754487e2 LM |
14871 | #if GDB_SELF_TEST |
14872 | ||
14873 | namespace selftests { | |
14874 | ||
14875 | static void | |
14876 | test_memory_tagging_functions () | |
14877 | { | |
14878 | remote_target remote; | |
14879 | ||
14880 | struct packet_config *config | |
14881 | = &remote_protocol_packets[PACKET_memory_tagging_feature]; | |
14882 | ||
14883 | scoped_restore restore_memtag_support_ | |
14884 | = make_scoped_restore (&config->support); | |
14885 | ||
14886 | /* Test memory tagging packet support. */ | |
14887 | config->support = PACKET_SUPPORT_UNKNOWN; | |
14888 | SELF_CHECK (remote.supports_memory_tagging () == false); | |
14889 | config->support = PACKET_DISABLE; | |
14890 | SELF_CHECK (remote.supports_memory_tagging () == false); | |
14891 | config->support = PACKET_ENABLE; | |
14892 | SELF_CHECK (remote.supports_memory_tagging () == true); | |
14893 | ||
14894 | /* Setup testing. */ | |
14895 | gdb::char_vector packet; | |
14896 | gdb::byte_vector tags, bv; | |
14897 | std::string expected, reply; | |
14898 | packet.resize (32000); | |
14899 | ||
14900 | /* Test creating a qMemTags request. */ | |
14901 | ||
14902 | expected = "qMemTags:0,0:0"; | |
14903 | create_fetch_memtags_request (packet, 0x0, 0x0, 0); | |
14904 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
14905 | ||
14906 | expected = "qMemTags:deadbeef,10:1"; | |
14907 | create_fetch_memtags_request (packet, 0xdeadbeef, 16, 1); | |
14908 | SELF_CHECK (strcmp (packet.data (), expected.c_str ()) == 0); | |
14909 | ||
14910 | /* Test parsing a qMemTags reply. */ | |
14911 | ||
14912 | /* Error reply, tags vector unmodified. */ | |
14913 | reply = "E00"; | |
14914 | strcpy (packet.data (), reply.c_str ()); | |
14915 | tags.resize (0); | |
14916 | SELF_CHECK (parse_fetch_memtags_reply (packet, tags) == false); | |
14917 | SELF_CHECK (tags.size () == 0); | |
14918 | ||
14919 | /* Valid reply, tags vector updated. */ | |
14920 | tags.resize (0); | |
14921 | bv.resize (0); | |
14922 | ||
14923 | for (int i = 0; i < 5; i++) | |
14924 | bv.push_back (i); | |
14925 | ||
14926 | reply = "m" + bin2hex (bv.data (), bv.size ()); | |
14927 | strcpy (packet.data (), reply.c_str ()); | |
14928 | ||
14929 | SELF_CHECK (parse_fetch_memtags_reply (packet, tags) == true); | |
14930 | SELF_CHECK (tags.size () == 5); | |
14931 | ||
14932 | for (int i = 0; i < 5; i++) | |
14933 | SELF_CHECK (tags[i] == i); | |
14934 | ||
14935 | /* Test creating a QMemTags request. */ | |
14936 | ||
14937 | /* Empty tag data. */ | |
14938 | tags.resize (0); | |
14939 | expected = "QMemTags:0,0:0:"; | |
14940 | create_store_memtags_request (packet, 0x0, 0x0, 0, tags); | |
14941 | SELF_CHECK (memcmp (packet.data (), expected.c_str (), | |
14942 | expected.length ()) == 0); | |
14943 | ||
14944 | /* Non-empty tag data. */ | |
14945 | tags.resize (0); | |
14946 | for (int i = 0; i < 5; i++) | |
14947 | tags.push_back (i); | |
14948 | expected = "QMemTags:deadbeef,ff:1:0001020304"; | |
14949 | create_store_memtags_request (packet, 0xdeadbeef, 255, 1, tags); | |
14950 | SELF_CHECK (memcmp (packet.data (), expected.c_str (), | |
14951 | expected.length ()) == 0); | |
14952 | } | |
14953 | ||
14954 | } // namespace selftests | |
14955 | #endif /* GDB_SELF_TEST */ | |
14956 | ||
6c265988 | 14957 | void _initialize_remote (); |
c906108c | 14958 | void |
6c265988 | 14959 | _initialize_remote () |
c906108c | 14960 | { |
d9f719f1 PA |
14961 | add_target (remote_target_info, remote_target::open); |
14962 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 14963 | |
dc8acb97 | 14964 | /* Hook into new objfile notification. */ |
c90e7d63 | 14965 | gdb::observers::new_objfile.attach (remote_new_objfile, "remote"); |
dc8acb97 | 14966 | |
c906108c SS |
14967 | #if 0 |
14968 | init_remote_threadtests (); | |
14969 | #endif | |
14970 | ||
23860348 | 14971 | /* set/show remote ... */ |
d471ea57 | 14972 | |
0743fc83 | 14973 | add_basic_prefix_cmd ("remote", class_maintenance, _("\ |
590042fc | 14974 | Remote protocol specific variables.\n\ |
5a2468f5 | 14975 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14976 | the packets being used."), |
2f822da5 | 14977 | &remote_set_cmdlist, |
0743fc83 | 14978 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 14979 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
590042fc | 14980 | Remote protocol specific variables.\n\ |
5a2468f5 | 14981 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14982 | the packets being used."), |
2f822da5 | 14983 | &remote_show_cmdlist, |
23860348 | 14984 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14985 | |
1a966eab AC |
14986 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14987 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14988 | Argument is a single section name (default: all loaded sections).\n\ |
14989 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14990 | &cmdlist); |
14991 | ||
e5b176f2 | 14992 | add_cmd ("packet", class_maintenance, cli_packet_command, _("\ |
1a966eab | 14993 | Send an arbitrary packet to a remote target.\n\ |
c906108c SS |
14994 | maintenance packet TEXT\n\ |
14995 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14996 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14997 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14998 | terminating `#' character and checksum."), |
c906108c SS |
14999 | &maintenancelist); |
15000 | ||
9f260536 SM |
15001 | set_show_commands remotebreak_cmds |
15002 | = add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ | |
7915a72c AC |
15003 | Set whether to send break if interrupted."), _("\ |
15004 | Show whether to send break if interrupted."), _("\ | |
15005 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9f260536 SM |
15006 | set_remotebreak, show_remotebreak, |
15007 | &setlist, &showlist); | |
15008 | deprecate_cmd (remotebreak_cmds.set, "set remote interrupt-sequence"); | |
15009 | deprecate_cmd (remotebreak_cmds.show, "show remote interrupt-sequence"); | |
9a7071a8 JB |
15010 | |
15011 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
15012 | interrupt_sequence_modes, &interrupt_sequence_mode, |
15013 | _("\ | |
9a7071a8 JB |
15014 | Set interrupt sequence to remote target."), _("\ |
15015 | Show interrupt sequence to remote target."), _("\ | |
15016 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
15017 | NULL, show_interrupt_sequence, | |
15018 | &remote_set_cmdlist, | |
15019 | &remote_show_cmdlist); | |
15020 | ||
15021 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
15022 | &interrupt_on_connect, _("\ | |
590042fc PW |
15023 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ |
15024 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ | |
9a7071a8 JB |
15025 | If set, interrupt sequence is sent to remote target."), |
15026 | NULL, NULL, | |
15027 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 15028 | |
23860348 | 15029 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 15030 | |
1a966eab AC |
15031 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
15032 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 15033 | &setlist); |
1a966eab AC |
15034 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
15035 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
15036 | &showlist); |
15037 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
15038 | set_memory_write_packet_size, _("\ |
15039 | Set the maximum number of bytes per memory-write packet.\n\ | |
15040 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
15041 | default packet size. The actual limit is further reduced\n\ | |
15042 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
15043 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
15044 | &remote_set_cmdlist); |
15045 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
15046 | set_memory_read_packet_size, _("\ |
15047 | Set the maximum number of bytes per memory-read packet.\n\ | |
15048 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
15049 | default packet size. The actual limit is further reduced\n\ | |
15050 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
15051 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
15052 | &remote_set_cmdlist); |
15053 | add_cmd ("memory-write-packet-size", no_class, | |
15054 | show_memory_write_packet_size, | |
1a966eab | 15055 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
15056 | &remote_show_cmdlist); |
15057 | add_cmd ("memory-read-packet-size", no_class, | |
15058 | show_memory_read_packet_size, | |
1a966eab | 15059 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 15060 | &remote_show_cmdlist); |
c906108c | 15061 | |
055303e2 | 15062 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
15063 | &remote_hw_watchpoint_limit, _("\ |
15064 | Set the maximum number of target hardware watchpoints."), _("\ | |
15065 | Show the maximum number of target hardware watchpoints."), _("\ | |
055303e2 AB |
15066 | Specify \"unlimited\" for unlimited hardware watchpoints."), |
15067 | NULL, show_hardware_watchpoint_limit, | |
15068 | &remote_set_cmdlist, | |
15069 | &remote_show_cmdlist); | |
15070 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-length-limit", | |
15071 | no_class, | |
480a3f21 PW |
15072 | &remote_hw_watchpoint_length_limit, _("\ |
15073 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
15074 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
055303e2 AB |
15075 | Specify \"unlimited\" to allow watchpoints of unlimited size."), |
15076 | NULL, show_hardware_watchpoint_length_limit, | |
480a3f21 | 15077 | &remote_set_cmdlist, &remote_show_cmdlist); |
055303e2 | 15078 | add_setshow_zuinteger_unlimited_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
15079 | &remote_hw_breakpoint_limit, _("\ |
15080 | Set the maximum number of target hardware breakpoints."), _("\ | |
15081 | Show the maximum number of target hardware breakpoints."), _("\ | |
055303e2 AB |
15082 | Specify \"unlimited\" for unlimited hardware breakpoints."), |
15083 | NULL, show_hardware_breakpoint_limit, | |
b3f42336 | 15084 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 15085 | |
1b493192 PA |
15086 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
15087 | &remote_address_size, _("\ | |
4d28ad1e AC |
15088 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
15089 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
15090 | NULL, |
15091 | NULL, /* FIXME: i18n: */ | |
15092 | &setlist, &showlist); | |
c906108c | 15093 | |
ca4f7f8b PA |
15094 | init_all_packet_configs (); |
15095 | ||
444abaca | 15096 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 15097 | "X", "binary-download", 1); |
0f71a2f6 | 15098 | |
444abaca | 15099 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 15100 | "vCont", "verbose-resume", 0); |
506fb367 | 15101 | |
89be2091 DJ |
15102 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
15103 | "QPassSignals", "pass-signals", 0); | |
15104 | ||
82075af2 JS |
15105 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
15106 | "QCatchSyscalls", "catch-syscalls", 0); | |
15107 | ||
9b224c5e PA |
15108 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
15109 | "QProgramSignals", "program-signals", 0); | |
15110 | ||
bc3b087d SDJ |
15111 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
15112 | "QSetWorkingDir", "set-working-dir", 0); | |
15113 | ||
aefd8b33 SDJ |
15114 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
15115 | "QStartupWithShell", "startup-with-shell", 0); | |
15116 | ||
0a2dde4a SDJ |
15117 | add_packet_config_cmd (&remote_protocol_packets |
15118 | [PACKET_QEnvironmentHexEncoded], | |
15119 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
15120 | 0); | |
15121 | ||
15122 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
15123 | "QEnvironmentReset", "environment-reset", | |
15124 | 0); | |
15125 | ||
15126 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
15127 | "QEnvironmentUnset", "environment-unset", | |
15128 | 0); | |
15129 | ||
444abaca | 15130 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 15131 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 15132 | |
444abaca | 15133 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 15134 | "P", "set-register", 1); |
d471ea57 | 15135 | |
444abaca | 15136 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 15137 | "p", "fetch-register", 1); |
b96ec7ac | 15138 | |
444abaca | 15139 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 15140 | "Z0", "software-breakpoint", 0); |
d471ea57 | 15141 | |
444abaca | 15142 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 15143 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 15144 | |
444abaca | 15145 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 15146 | "Z2", "write-watchpoint", 0); |
d471ea57 | 15147 | |
444abaca | 15148 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 15149 | "Z3", "read-watchpoint", 0); |
d471ea57 | 15150 | |
444abaca | 15151 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 15152 | "Z4", "access-watchpoint", 0); |
d471ea57 | 15153 | |
0876f84a DJ |
15154 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
15155 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 15156 | |
c78fa86a GB |
15157 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
15158 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
15159 | ||
23181151 DJ |
15160 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
15161 | "qXfer:features:read", "target-features", 0); | |
15162 | ||
cfa9d6d9 DJ |
15163 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
15164 | "qXfer:libraries:read", "library-info", 0); | |
15165 | ||
2268b414 JK |
15166 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
15167 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
15168 | ||
fd79ecee DJ |
15169 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
15170 | "qXfer:memory-map:read", "memory-map", 0); | |
15171 | ||
07e059b5 | 15172 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
dda83cd7 | 15173 | "qXfer:osdata:read", "osdata", 0); |
07e059b5 | 15174 | |
dc146f7c VP |
15175 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
15176 | "qXfer:threads:read", "threads", 0); | |
15177 | ||
4aa995e1 | 15178 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
dda83cd7 | 15179 | "qXfer:siginfo:read", "read-siginfo-object", 0); |
4aa995e1 PA |
15180 | |
15181 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
dda83cd7 | 15182 | "qXfer:siginfo:write", "write-siginfo-object", 0); |
4aa995e1 | 15183 | |
b3b9301e PA |
15184 | add_packet_config_cmd |
15185 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 15186 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 15187 | |
169081d0 TG |
15188 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
15189 | "qXfer:uib:read", "unwind-info-block", 0); | |
15190 | ||
444abaca | 15191 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 15192 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
15193 | 0); |
15194 | ||
711e434b PM |
15195 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
15196 | "qGetTIBAddr", "get-thread-information-block-address", | |
15197 | 0); | |
15198 | ||
40ab02ce MS |
15199 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
15200 | "bc", "reverse-continue", 0); | |
15201 | ||
15202 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
15203 | "bs", "reverse-step", 0); | |
15204 | ||
be2a5f71 DJ |
15205 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
15206 | "qSupported", "supported-packets", 0); | |
15207 | ||
08388c79 DE |
15208 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
15209 | "qSearch:memory", "search-memory", 0); | |
15210 | ||
bd3eecc3 PA |
15211 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
15212 | "qTStatus", "trace-status", 0); | |
15213 | ||
15a201c8 GB |
15214 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
15215 | "vFile:setfs", "hostio-setfs", 0); | |
15216 | ||
a6b151f1 DJ |
15217 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
15218 | "vFile:open", "hostio-open", 0); | |
15219 | ||
15220 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
15221 | "vFile:pread", "hostio-pread", 0); | |
15222 | ||
15223 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
15224 | "vFile:pwrite", "hostio-pwrite", 0); | |
15225 | ||
15226 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
15227 | "vFile:close", "hostio-close", 0); | |
15228 | ||
15229 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
15230 | "vFile:unlink", "hostio-unlink", 0); | |
15231 | ||
b9e7b9c3 UW |
15232 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
15233 | "vFile:readlink", "hostio-readlink", 0); | |
15234 | ||
0a93529c GB |
15235 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
15236 | "vFile:fstat", "hostio-fstat", 0); | |
15237 | ||
2d717e4f DJ |
15238 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
15239 | "vAttach", "attach", 0); | |
15240 | ||
15241 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
15242 | "vRun", "run", 0); | |
15243 | ||
a6f3e723 SL |
15244 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
15245 | "QStartNoAckMode", "noack", 0); | |
15246 | ||
82f73884 PA |
15247 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
15248 | "vKill", "kill", 0); | |
15249 | ||
0b16c5cf PA |
15250 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
15251 | "qAttached", "query-attached", 0); | |
15252 | ||
782b2b07 | 15253 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
15254 | "ConditionalTracepoints", |
15255 | "conditional-tracepoints", 0); | |
3788aec7 LM |
15256 | |
15257 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
15258 | "ConditionalBreakpoints", | |
15259 | "conditional-breakpoints", 0); | |
15260 | ||
d3ce09f5 SS |
15261 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
15262 | "BreakpointCommands", | |
15263 | "breakpoint-commands", 0); | |
15264 | ||
7a697b8d SS |
15265 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
15266 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 15267 | |
409873ef SS |
15268 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
15269 | "TracepointSource", "TracepointSource", 0); | |
15270 | ||
d914c394 SS |
15271 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
15272 | "QAllow", "allow", 0); | |
15273 | ||
0fb4aa4b PA |
15274 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
15275 | "StaticTracepoints", "static-tracepoints", 0); | |
15276 | ||
1e4d1764 YQ |
15277 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
15278 | "InstallInTrace", "install-in-trace", 0); | |
15279 | ||
0fb4aa4b | 15280 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
dda83cd7 | 15281 | "qXfer:statictrace:read", "read-sdata-object", 0); |
0fb4aa4b | 15282 | |
78d85199 YQ |
15283 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
15284 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
15285 | ||
03583c20 UW |
15286 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
15287 | "QDisableRandomization", "disable-randomization", 0); | |
15288 | ||
d1feda86 YQ |
15289 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
15290 | "QAgent", "agent", 0); | |
15291 | ||
f6f899bf HAQ |
15292 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
15293 | "QTBuffer:size", "trace-buffer-size", 0); | |
15294 | ||
9accd112 MM |
15295 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
15296 | "Qbtrace:off", "disable-btrace", 0); | |
15297 | ||
15298 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
15299 | "Qbtrace:bts", "enable-btrace-bts", 0); |
15300 | ||
15301 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
15302 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
15303 | |
15304 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
15305 | "qXfer:btrace", "read-btrace", 0); | |
15306 | ||
f4abbc16 MM |
15307 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
15308 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
15309 | ||
d33501a5 MM |
15310 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
15311 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
15312 | ||
73b8c1fd PA |
15313 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
15314 | "multiprocess-feature", "multiprocess-feature", 0); | |
15315 | ||
f7e6eed5 | 15316 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
dda83cd7 | 15317 | "swbreak-feature", "swbreak-feature", 0); |
f7e6eed5 PA |
15318 | |
15319 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
dda83cd7 | 15320 | "hwbreak-feature", "hwbreak-feature", 0); |
f7e6eed5 | 15321 | |
89245bc0 DB |
15322 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
15323 | "fork-event-feature", "fork-event-feature", 0); | |
15324 | ||
15325 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
15326 | "vfork-event-feature", "vfork-event-feature", 0); | |
15327 | ||
b20a6524 MM |
15328 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
15329 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
15330 | ||
750ce8d1 YQ |
15331 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
15332 | "vContSupported", "verbose-resume-supported", 0); | |
15333 | ||
94585166 DB |
15334 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
15335 | "exec-event-feature", "exec-event-feature", 0); | |
15336 | ||
de979965 PA |
15337 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
15338 | "vCtrlC", "ctrl-c", 0); | |
15339 | ||
65706a29 PA |
15340 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
15341 | "QThreadEvents", "thread-events", 0); | |
15342 | ||
f2faf941 PA |
15343 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
15344 | "N stop reply", "no-resumed-stop-reply", 0); | |
15345 | ||
2c2e7f87 LM |
15346 | add_packet_config_cmd (&remote_protocol_packets[PACKET_memory_tagging_feature], |
15347 | "memory-tagging-feature", "memory-tagging-feature", 0); | |
15348 | ||
0b736949 DB |
15349 | /* Assert that we've registered "set remote foo-packet" commands |
15350 | for all packet configs. */ | |
ca4f7f8b PA |
15351 | { |
15352 | int i; | |
15353 | ||
15354 | for (i = 0; i < PACKET_MAX; i++) | |
15355 | { | |
15356 | /* Ideally all configs would have a command associated. Some | |
15357 | still don't though. */ | |
15358 | int excepted; | |
15359 | ||
15360 | switch (i) | |
15361 | { | |
15362 | case PACKET_QNonStop: | |
ca4f7f8b PA |
15363 | case PACKET_EnableDisableTracepoints_feature: |
15364 | case PACKET_tracenz_feature: | |
15365 | case PACKET_DisconnectedTracing_feature: | |
15366 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
15367 | case PACKET_qCRC: |
15368 | /* Additions to this list need to be well justified: | |
15369 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
15370 | excepted = 1; |
15371 | break; | |
15372 | default: | |
15373 | excepted = 0; | |
15374 | break; | |
15375 | } | |
15376 | ||
15377 | /* This catches both forgetting to add a config command, and | |
15378 | forgetting to remove a packet from the exception list. */ | |
15379 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
15380 | } | |
15381 | } | |
15382 | ||
37a105a1 DJ |
15383 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
15384 | Z sub-packet has its own set and show commands, but users may | |
15385 | have sets to this variable in their .gdbinit files (or in their | |
15386 | documentation). */ | |
e9e68a56 | 15387 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c | 15388 | &remote_Z_packet_detect, _("\ |
590042fc PW |
15389 | Set use of remote protocol `Z' packets."), _("\ |
15390 | Show use of remote protocol `Z' packets."), _("\ | |
3b64bf98 | 15391 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 15392 | packets."), |
e9e68a56 | 15393 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
15394 | show_remote_protocol_Z_packet_cmd, |
15395 | /* FIXME: i18n: Use of remote protocol | |
15396 | `Z' packets is %s. */ | |
e9e68a56 | 15397 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 15398 | |
0743fc83 | 15399 | add_basic_prefix_cmd ("remote", class_files, _("\ |
590042fc | 15400 | Manipulate files on the remote system.\n\ |
a6b151f1 | 15401 | Transfer files to and from the remote target system."), |
2f822da5 | 15402 | &remote_cmdlist, |
0743fc83 | 15403 | 0 /* allow-unknown */, &cmdlist); |
a6b151f1 DJ |
15404 | |
15405 | add_cmd ("put", class_files, remote_put_command, | |
15406 | _("Copy a local file to the remote system."), | |
15407 | &remote_cmdlist); | |
15408 | ||
15409 | add_cmd ("get", class_files, remote_get_command, | |
15410 | _("Copy a remote file to the local system."), | |
15411 | &remote_cmdlist); | |
15412 | ||
15413 | add_cmd ("delete", class_files, remote_delete_command, | |
15414 | _("Delete a remote file."), | |
15415 | &remote_cmdlist); | |
15416 | ||
2d717e4f | 15417 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 15418 | &remote_exec_file_var, _("\ |
590042fc PW |
15419 | Set the remote pathname for \"run\"."), _("\ |
15420 | Show the remote pathname for \"run\"."), NULL, | |
94585166 DB |
15421 | set_remote_exec_file, |
15422 | show_remote_exec_file, | |
15423 | &remote_set_cmdlist, | |
15424 | &remote_show_cmdlist); | |
2d717e4f | 15425 | |
c1e36e3e PA |
15426 | add_setshow_boolean_cmd ("range-stepping", class_run, |
15427 | &use_range_stepping, _("\ | |
15428 | Enable or disable range stepping."), _("\ | |
15429 | Show whether target-assisted range stepping is enabled."), _("\ | |
15430 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
15431 | tells the target to step the corresponding range of addresses itself instead\n\ | |
15432 | of issuing multiple single-steps. This speeds up source level\n\ | |
15433 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
15434 | stepping is supported by the target. The default is on."), | |
15435 | set_range_stepping, | |
15436 | show_range_stepping, | |
15437 | &setlist, | |
15438 | &showlist); | |
15439 | ||
ed2b7c17 TT |
15440 | add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\ |
15441 | Set watchdog timer."), _("\ | |
15442 | Show watchdog timer."), _("\ | |
15443 | When non-zero, this timeout is used instead of waiting forever for a target\n\ | |
15444 | to finish a low-level step or continue operation. If the specified amount\n\ | |
15445 | of time passes without a response from the target, an error occurs."), | |
15446 | NULL, | |
15447 | show_watchdog, | |
15448 | &setlist, &showlist); | |
15449 | ||
6cc8564b LM |
15450 | add_setshow_zuinteger_unlimited_cmd ("remote-packet-max-chars", no_class, |
15451 | &remote_packet_max_chars, _("\ | |
15452 | Set the maximum number of characters to display for each remote packet."), _("\ | |
15453 | Show the maximum number of characters to display for each remote packet."), _("\ | |
15454 | Specify \"unlimited\" to display all the characters."), | |
15455 | NULL, show_remote_packet_max_chars, | |
15456 | &setdebuglist, &showdebuglist); | |
15457 | ||
02349803 SM |
15458 | add_setshow_boolean_cmd ("remote", no_class, &remote_debug, |
15459 | _("Set debugging of remote protocol."), | |
15460 | _("Show debugging of remote protocol."), | |
15461 | _("\ | |
baf2b57f SM |
15462 | When enabled, each packet sent or received with the remote target\n\ |
15463 | is displayed."), | |
02349803 SM |
15464 | NULL, |
15465 | show_remote_debug, | |
15466 | &setdebuglist, &showdebuglist); | |
baf2b57f SM |
15467 | |
15468 | add_setshow_zuinteger_unlimited_cmd ("remotetimeout", no_class, | |
15469 | &remote_timeout, _("\ | |
15470 | Set timeout limit to wait for target to respond."), _("\ | |
15471 | Show timeout limit to wait for target to respond."), _("\ | |
15472 | This value is used to set the time limit for gdb to wait for a response\n\ | |
15473 | from the target."), | |
15474 | NULL, | |
15475 | show_remote_timeout, | |
15476 | &setlist, &showlist); | |
15477 | ||
449092f6 | 15478 | /* Eventually initialize fileio. See fileio.c */ |
3f4d92eb | 15479 | initialize_remote_fileio (&remote_set_cmdlist, &remote_show_cmdlist); |
754487e2 LM |
15480 | |
15481 | #if GDB_SELF_TEST | |
15482 | selftests::register_test ("remote_memory_tagging", | |
15483 | selftests::test_memory_tagging_functions); | |
15484 | #endif | |
c906108c | 15485 | } |