Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
b811d2c2 | 3 | Copyright (C) 1988-2020 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 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
268a13a5 | 71 | #include "gdbsupport/agent.h" |
9accd112 | 72 | #include "btrace.h" |
c0272db5 | 73 | #include "record-btrace.h" |
325fac50 | 74 | #include <algorithm> |
268a13a5 TT |
75 | #include "gdbsupport/scoped_restore.h" |
76 | #include "gdbsupport/environ.h" | |
77 | #include "gdbsupport/byte-vector.h" | |
39ef2f62 | 78 | #include <algorithm> |
9d6eea31 | 79 | #include <unordered_map> |
93b54c8e | 80 | #include "async-event.h" |
35b1e5cc | 81 | |
f6ac5f3d PA |
82 | /* The remote target. */ |
83 | ||
d9f719f1 PA |
84 | static const char remote_doc[] = N_("\ |
85 | Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
86 | Specify the serial device it is connected to\n\ | |
87 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
88 | ||
6b8edb51 PA |
89 | #define OPAQUETHREADBYTES 8 |
90 | ||
91 | /* a 64 bit opaque identifier */ | |
92 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
93 | ||
94 | struct gdb_ext_thread_info; | |
95 | struct threads_listing_context; | |
96 | typedef int (*rmt_thread_action) (threadref *ref, void *context); | |
97 | struct protocol_feature; | |
98 | struct packet_reg; | |
99 | ||
100 | struct stop_reply; | |
32603266 | 101 | typedef std::unique_ptr<stop_reply> stop_reply_up; |
6b8edb51 PA |
102 | |
103 | /* Generic configuration support for packets the stub optionally | |
104 | supports. Allows the user to specify the use of the packet as well | |
105 | as allowing GDB to auto-detect support in the remote stub. */ | |
106 | ||
107 | enum packet_support | |
108 | { | |
109 | PACKET_SUPPORT_UNKNOWN = 0, | |
110 | PACKET_ENABLE, | |
111 | PACKET_DISABLE | |
112 | }; | |
113 | ||
114 | /* Analyze a packet's return value and update the packet config | |
115 | accordingly. */ | |
116 | ||
117 | enum packet_result | |
118 | { | |
119 | PACKET_ERROR, | |
120 | PACKET_OK, | |
121 | PACKET_UNKNOWN | |
122 | }; | |
123 | ||
124 | struct threads_listing_context; | |
3c69da40 PA |
125 | |
126 | /* Stub vCont actions support. | |
127 | ||
128 | Each field is a boolean flag indicating whether the stub reports | |
129 | support for the corresponding action. */ | |
130 | ||
131 | struct vCont_action_support | |
132 | { | |
133 | /* vCont;t */ | |
134 | bool t = false; | |
135 | ||
136 | /* vCont;r */ | |
137 | bool r = false; | |
138 | ||
139 | /* vCont;s */ | |
140 | bool s = false; | |
141 | ||
142 | /* vCont;S */ | |
143 | bool S = false; | |
144 | }; | |
145 | ||
405feb71 | 146 | /* About this many threadids fit in a packet. */ |
3c69da40 PA |
147 | |
148 | #define MAXTHREADLISTRESULTS 32 | |
149 | ||
150 | /* Data for the vFile:pread readahead cache. */ | |
151 | ||
152 | struct readahead_cache | |
153 | { | |
154 | /* Invalidate the readahead cache. */ | |
155 | void invalidate (); | |
156 | ||
157 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
158 | void invalidate_fd (int fd); | |
159 | ||
160 | /* Serve pread from the readahead cache. Returns number of bytes | |
161 | read, or 0 if the request can't be served from the cache. */ | |
162 | int pread (int fd, gdb_byte *read_buf, size_t len, ULONGEST offset); | |
163 | ||
164 | /* The file descriptor for the file that is being cached. -1 if the | |
165 | cache is invalid. */ | |
166 | int fd = -1; | |
167 | ||
168 | /* The offset into the file that the cache buffer corresponds | |
169 | to. */ | |
170 | ULONGEST offset = 0; | |
171 | ||
172 | /* The buffer holding the cache contents. */ | |
173 | gdb_byte *buf = nullptr; | |
174 | /* The buffer's size. We try to read as much as fits into a packet | |
175 | at a time. */ | |
176 | size_t bufsize = 0; | |
177 | ||
178 | /* Cache hit and miss counters. */ | |
179 | ULONGEST hit_count = 0; | |
180 | ULONGEST miss_count = 0; | |
181 | }; | |
182 | ||
183 | /* Description of the remote protocol for a given architecture. */ | |
184 | ||
185 | struct packet_reg | |
186 | { | |
187 | long offset; /* Offset into G packet. */ | |
188 | long regnum; /* GDB's internal register number. */ | |
189 | LONGEST pnum; /* Remote protocol register number. */ | |
190 | int in_g_packet; /* Always part of G packet. */ | |
191 | /* long size in bytes; == register_size (target_gdbarch (), regnum); | |
192 | at present. */ | |
193 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); | |
194 | at present. */ | |
195 | }; | |
196 | ||
197 | struct remote_arch_state | |
198 | { | |
199 | explicit remote_arch_state (struct gdbarch *gdbarch); | |
200 | ||
201 | /* Description of the remote protocol registers. */ | |
202 | long sizeof_g_packet; | |
203 | ||
204 | /* Description of the remote protocol registers indexed by REGNUM | |
205 | (making an array gdbarch_num_regs in size). */ | |
206 | std::unique_ptr<packet_reg[]> regs; | |
207 | ||
208 | /* This is the size (in chars) of the first response to the ``g'' | |
209 | packet. It is used as a heuristic when determining the maximum | |
210 | size of memory-read and memory-write packets. A target will | |
211 | typically only reserve a buffer large enough to hold the ``g'' | |
212 | packet. The size does not include packet overhead (headers and | |
213 | trailers). */ | |
214 | long actual_register_packet_size; | |
215 | ||
216 | /* This is the maximum size (in chars) of a non read/write packet. | |
217 | It is also used as a cap on the size of read/write packets. */ | |
218 | long remote_packet_size; | |
219 | }; | |
220 | ||
221 | /* Description of the remote protocol state for the currently | |
222 | connected target. This is per-target state, and independent of the | |
223 | selected architecture. */ | |
224 | ||
225 | class remote_state | |
226 | { | |
227 | public: | |
228 | ||
229 | remote_state (); | |
230 | ~remote_state (); | |
231 | ||
232 | /* Get the remote arch state for GDBARCH. */ | |
233 | struct remote_arch_state *get_remote_arch_state (struct gdbarch *gdbarch); | |
234 | ||
235 | public: /* data */ | |
236 | ||
237 | /* A buffer to use for incoming packets, and its current size. The | |
238 | buffer is grown dynamically for larger incoming packets. | |
239 | Outgoing packets may also be constructed in this buffer. | |
8d64371b | 240 | The size of the buffer is always at least REMOTE_PACKET_SIZE; |
3c69da40 PA |
241 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing |
242 | packets. */ | |
8d64371b | 243 | gdb::char_vector buf; |
3c69da40 PA |
244 | |
245 | /* True if we're going through initial connection setup (finding out | |
246 | about the remote side's threads, relocating symbols, etc.). */ | |
247 | bool starting_up = false; | |
248 | ||
249 | /* If we negotiated packet size explicitly (and thus can bypass | |
250 | heuristics for the largest packet size that will not overflow | |
251 | a buffer in the stub), this will be set to that packet size. | |
252 | Otherwise zero, meaning to use the guessed size. */ | |
253 | long explicit_packet_size = 0; | |
254 | ||
255 | /* remote_wait is normally called when the target is running and | |
256 | waits for a stop reply packet. But sometimes we need to call it | |
257 | when the target is already stopped. We can send a "?" packet | |
258 | and have remote_wait read the response. Or, if we already have | |
259 | the response, we can stash it in BUF and tell remote_wait to | |
260 | skip calling getpkt. This flag is set when BUF contains a | |
261 | stop reply packet and the target is not waiting. */ | |
262 | int cached_wait_status = 0; | |
263 | ||
264 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
265 | expect acks from each other. The connection is assumed to be | |
266 | reliable. */ | |
267 | bool noack_mode = false; | |
268 | ||
269 | /* True if we're connected in extended remote mode. */ | |
270 | bool extended = false; | |
271 | ||
272 | /* True if we resumed the target and we're waiting for the target to | |
273 | stop. In the mean time, we can't start another command/query. | |
274 | The remote server wouldn't be ready to process it, so we'd | |
275 | timeout waiting for a reply that would never come and eventually | |
276 | we'd close the connection. This can happen in asynchronous mode | |
277 | because we allow GDB commands while the target is running. */ | |
278 | bool waiting_for_stop_reply = false; | |
279 | ||
280 | /* The status of the stub support for the various vCont actions. */ | |
281 | vCont_action_support supports_vCont; | |
5b6d1e4f PA |
282 | /* Whether vCont support was probed already. This is a workaround |
283 | until packet_support is per-connection. */ | |
284 | bool supports_vCont_probed; | |
3c69da40 PA |
285 | |
286 | /* True if the user has pressed Ctrl-C, but the target hasn't | |
287 | responded to that. */ | |
288 | bool ctrlc_pending_p = false; | |
289 | ||
290 | /* True if we saw a Ctrl-C while reading or writing from/to the | |
291 | remote descriptor. At that point it is not safe to send a remote | |
292 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
293 | process it once we're done with sending/receiving the current | |
294 | packet, which should be shortly. If however that takes too long, | |
295 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
296 | bool got_ctrlc_during_io = false; | |
297 | ||
298 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
299 | remote_open knows that we don't have a file open when the program | |
300 | starts. */ | |
301 | struct serial *remote_desc = nullptr; | |
302 | ||
303 | /* These are the threads which we last sent to the remote system. The | |
304 | TID member will be -1 for all or -2 for not sent yet. */ | |
305 | ptid_t general_thread = null_ptid; | |
306 | ptid_t continue_thread = null_ptid; | |
307 | ||
308 | /* This is the traceframe which we last selected on the remote system. | |
309 | It will be -1 if no traceframe is selected. */ | |
310 | int remote_traceframe_number = -1; | |
311 | ||
312 | char *last_pass_packet = nullptr; | |
313 | ||
314 | /* The last QProgramSignals packet sent to the target. We bypass | |
315 | sending a new program signals list down to the target if the new | |
316 | packet is exactly the same as the last we sent. IOW, we only let | |
317 | the target know about program signals list changes. */ | |
318 | char *last_program_signals_packet = nullptr; | |
319 | ||
320 | gdb_signal last_sent_signal = GDB_SIGNAL_0; | |
321 | ||
322 | bool last_sent_step = false; | |
323 | ||
324 | /* The execution direction of the last resume we got. */ | |
325 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; | |
326 | ||
327 | char *finished_object = nullptr; | |
328 | char *finished_annex = nullptr; | |
329 | ULONGEST finished_offset = 0; | |
330 | ||
331 | /* Should we try the 'ThreadInfo' query packet? | |
332 | ||
333 | This variable (NOT available to the user: auto-detect only!) | |
334 | determines whether GDB will use the new, simpler "ThreadInfo" | |
335 | query or the older, more complex syntax for thread queries. | |
336 | This is an auto-detect variable (set to true at each connect, | |
337 | and set to false when the target fails to recognize it). */ | |
338 | bool use_threadinfo_query = false; | |
339 | bool use_threadextra_query = false; | |
340 | ||
341 | threadref echo_nextthread {}; | |
342 | threadref nextthread {}; | |
343 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
344 | ||
345 | /* The state of remote notification. */ | |
346 | struct remote_notif_state *notif_state = nullptr; | |
347 | ||
348 | /* The branch trace configuration. */ | |
349 | struct btrace_config btrace_config {}; | |
350 | ||
351 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
352 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
353 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
354 | has yet been sent. */ | |
355 | int fs_pid = -1; | |
356 | ||
357 | /* A readahead cache for vFile:pread. Often, reading a binary | |
358 | involves a sequence of small reads. E.g., when parsing an ELF | |
359 | file. A readahead cache helps mostly the case of remote | |
360 | debugging on a connection with higher latency, due to the | |
361 | request/reply nature of the RSP. We only cache data for a single | |
362 | file descriptor at a time. */ | |
363 | struct readahead_cache readahead_cache; | |
364 | ||
365 | /* The list of already fetched and acknowledged stop events. This | |
366 | queue is used for notification Stop, and other notifications | |
367 | don't need queue for their events, because the notification | |
368 | events of Stop can't be consumed immediately, so that events | |
369 | should be queued first, and be consumed by remote_wait_{ns,as} | |
370 | one per time. Other notifications can consume their events | |
371 | immediately, so queue is not needed for them. */ | |
953edf2b | 372 | std::vector<stop_reply_up> stop_reply_queue; |
3c69da40 PA |
373 | |
374 | /* Asynchronous signal handle registered as event loop source for | |
375 | when we have pending events ready to be passed to the core. */ | |
376 | struct async_event_handler *remote_async_inferior_event_token = nullptr; | |
377 | ||
378 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with | |
379 | ``forever'' still use the normal timeout mechanism. This is | |
380 | currently used by the ASYNC code to guarentee that target reads | |
381 | during the initial connect always time-out. Once getpkt has been | |
382 | modified to return a timeout indication and, in turn | |
383 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
384 | this can go away. */ | |
385 | int wait_forever_enabled_p = 1; | |
386 | ||
387 | private: | |
388 | /* Mapping of remote protocol data for each gdbarch. Usually there | |
389 | is only one entry here, though we may see more with stubs that | |
390 | support multi-process. */ | |
391 | std::unordered_map<struct gdbarch *, remote_arch_state> | |
392 | m_arch_states; | |
393 | }; | |
6b8edb51 | 394 | |
d9f719f1 PA |
395 | static const target_info remote_target_info = { |
396 | "remote", | |
397 | N_("Remote serial target in gdb-specific protocol"), | |
398 | remote_doc | |
399 | }; | |
400 | ||
3b3dac9b | 401 | class remote_target : public process_stratum_target |
f6ac5f3d PA |
402 | { |
403 | public: | |
3b3dac9b | 404 | remote_target () = default; |
6b8edb51 | 405 | ~remote_target () override; |
f6ac5f3d | 406 | |
d9f719f1 PA |
407 | const target_info &info () const override |
408 | { return remote_target_info; } | |
f6ac5f3d | 409 | |
121b3efd PA |
410 | const char *connection_string () override; |
411 | ||
f6ac5f3d PA |
412 | thread_control_capabilities get_thread_control_capabilities () override |
413 | { return tc_schedlock; } | |
414 | ||
d9f719f1 PA |
415 | /* Open a remote connection. */ |
416 | static void open (const char *, int); | |
417 | ||
f6ac5f3d PA |
418 | void close () override; |
419 | ||
420 | void detach (inferior *, int) override; | |
421 | void disconnect (const char *, int) override; | |
422 | ||
423 | void commit_resume () override; | |
424 | void resume (ptid_t, int, enum gdb_signal) override; | |
425 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
426 | ||
427 | void fetch_registers (struct regcache *, int) override; | |
428 | void store_registers (struct regcache *, int) override; | |
429 | void prepare_to_store (struct regcache *) override; | |
430 | ||
431 | void files_info () override; | |
432 | ||
433 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
434 | ||
435 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
436 | enum remove_bp_reason) override; | |
437 | ||
438 | ||
57810aa7 PA |
439 | bool stopped_by_sw_breakpoint () override; |
440 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 441 | |
57810aa7 | 442 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 443 | |
57810aa7 | 444 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 445 | |
57810aa7 | 446 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 447 | |
57810aa7 | 448 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 449 | |
57810aa7 | 450 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
451 | |
452 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
453 | ||
454 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
455 | ||
456 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
457 | ||
458 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
459 | ||
460 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
461 | struct expression *) override; | |
462 | ||
463 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
464 | struct expression *) override; | |
465 | ||
466 | void kill () override; | |
467 | ||
468 | void load (const char *, int) override; | |
469 | ||
470 | void mourn_inferior () override; | |
471 | ||
adc6a863 | 472 | void pass_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d PA |
473 | |
474 | int set_syscall_catchpoint (int, bool, int, | |
475 | gdb::array_view<const int>) override; | |
476 | ||
adc6a863 | 477 | void program_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d | 478 | |
57810aa7 | 479 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
480 | |
481 | const char *thread_name (struct thread_info *) override; | |
482 | ||
483 | void update_thread_list () override; | |
484 | ||
a068643d | 485 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
486 | |
487 | const char *extra_thread_info (struct thread_info *) override; | |
488 | ||
489 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
490 | ||
491 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
492 | int handle_len, | |
493 | inferior *inf) override; | |
494 | ||
3d6c6204 KB |
495 | gdb::byte_vector thread_info_to_thread_handle (struct thread_info *tp) |
496 | override; | |
497 | ||
f6ac5f3d PA |
498 | void stop (ptid_t) override; |
499 | ||
500 | void interrupt () override; | |
501 | ||
502 | void pass_ctrlc () override; | |
503 | ||
504 | enum target_xfer_status xfer_partial (enum target_object object, | |
505 | const char *annex, | |
506 | gdb_byte *readbuf, | |
507 | const gdb_byte *writebuf, | |
508 | ULONGEST offset, ULONGEST len, | |
509 | ULONGEST *xfered_len) override; | |
510 | ||
511 | ULONGEST get_memory_xfer_limit () override; | |
512 | ||
513 | void rcmd (const char *command, struct ui_file *output) override; | |
514 | ||
515 | char *pid_to_exec_file (int pid) override; | |
516 | ||
517 | void log_command (const char *cmd) override | |
518 | { | |
519 | serial_log_command (this, cmd); | |
520 | } | |
521 | ||
522 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
523 | CORE_ADDR load_module_addr, | |
524 | CORE_ADDR offset) override; | |
525 | ||
57810aa7 | 526 | bool can_execute_reverse () override; |
f6ac5f3d PA |
527 | |
528 | std::vector<mem_region> memory_map () override; | |
529 | ||
530 | void flash_erase (ULONGEST address, LONGEST length) override; | |
531 | ||
532 | void flash_done () override; | |
533 | ||
534 | const struct target_desc *read_description () override; | |
535 | ||
536 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
537 | const gdb_byte *pattern, ULONGEST pattern_len, | |
538 | CORE_ADDR *found_addrp) override; | |
539 | ||
57810aa7 | 540 | bool can_async_p () override; |
f6ac5f3d | 541 | |
57810aa7 | 542 | bool is_async_p () override; |
f6ac5f3d PA |
543 | |
544 | void async (int) override; | |
545 | ||
5b6d1e4f PA |
546 | int async_wait_fd () override; |
547 | ||
f6ac5f3d PA |
548 | void thread_events (int) override; |
549 | ||
550 | int can_do_single_step () override; | |
551 | ||
552 | void terminal_inferior () override; | |
553 | ||
554 | void terminal_ours () override; | |
555 | ||
57810aa7 | 556 | bool supports_non_stop () override; |
f6ac5f3d | 557 | |
57810aa7 | 558 | bool supports_multi_process () override; |
f6ac5f3d | 559 | |
57810aa7 | 560 | bool supports_disable_randomization () override; |
f6ac5f3d | 561 | |
57810aa7 | 562 | bool filesystem_is_local () override; |
f6ac5f3d PA |
563 | |
564 | ||
565 | int fileio_open (struct inferior *inf, const char *filename, | |
566 | int flags, int mode, int warn_if_slow, | |
567 | int *target_errno) override; | |
568 | ||
569 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
570 | ULONGEST offset, int *target_errno) override; | |
571 | ||
572 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
573 | ULONGEST offset, int *target_errno) override; | |
574 | ||
575 | int fileio_fstat (int fd, struct stat *sb, int *target_errno) override; | |
576 | ||
577 | int fileio_close (int fd, int *target_errno) override; | |
578 | ||
579 | int fileio_unlink (struct inferior *inf, | |
580 | const char *filename, | |
581 | int *target_errno) override; | |
582 | ||
583 | gdb::optional<std::string> | |
584 | fileio_readlink (struct inferior *inf, | |
585 | const char *filename, | |
586 | int *target_errno) override; | |
587 | ||
57810aa7 | 588 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 589 | |
57810aa7 | 590 | bool supports_string_tracing () override; |
f6ac5f3d | 591 | |
57810aa7 | 592 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 593 | |
57810aa7 | 594 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
595 | |
596 | void trace_init () override; | |
597 | ||
598 | void download_tracepoint (struct bp_location *location) override; | |
599 | ||
57810aa7 | 600 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
601 | |
602 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
603 | ||
604 | void enable_tracepoint (struct bp_location *location) override; | |
605 | ||
606 | void disable_tracepoint (struct bp_location *location) override; | |
607 | ||
608 | void trace_set_readonly_regions () override; | |
609 | ||
610 | void trace_start () override; | |
611 | ||
612 | int get_trace_status (struct trace_status *ts) override; | |
613 | ||
614 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
615 | override; | |
616 | ||
617 | void trace_stop () override; | |
618 | ||
619 | int trace_find (enum trace_find_type type, int num, | |
620 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
621 | ||
57810aa7 | 622 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
623 | |
624 | int save_trace_data (const char *filename) override; | |
625 | ||
626 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
627 | ||
628 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
629 | ||
630 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
631 | ||
632 | int get_min_fast_tracepoint_insn_len () override; | |
633 | ||
634 | void set_disconnected_tracing (int val) override; | |
635 | ||
636 | void set_circular_trace_buffer (int val) override; | |
637 | ||
638 | void set_trace_buffer_size (LONGEST val) override; | |
639 | ||
57810aa7 PA |
640 | bool set_trace_notes (const char *user, const char *notes, |
641 | const char *stopnotes) override; | |
f6ac5f3d PA |
642 | |
643 | int core_of_thread (ptid_t ptid) override; | |
644 | ||
645 | int verify_memory (const gdb_byte *data, | |
646 | CORE_ADDR memaddr, ULONGEST size) override; | |
647 | ||
648 | ||
57810aa7 | 649 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
650 | |
651 | void set_permissions () override; | |
652 | ||
653 | bool static_tracepoint_marker_at (CORE_ADDR, | |
654 | struct static_tracepoint_marker *marker) | |
655 | override; | |
656 | ||
657 | std::vector<static_tracepoint_marker> | |
658 | static_tracepoint_markers_by_strid (const char *id) override; | |
659 | ||
660 | traceframe_info_up traceframe_info () override; | |
661 | ||
57810aa7 PA |
662 | bool use_agent (bool use) override; |
663 | bool can_use_agent () override; | |
f6ac5f3d PA |
664 | |
665 | struct btrace_target_info *enable_btrace (ptid_t ptid, | |
666 | const struct btrace_config *conf) override; | |
667 | ||
668 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
669 | ||
670 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
671 | ||
672 | enum btrace_error read_btrace (struct btrace_data *data, | |
673 | struct btrace_target_info *btinfo, | |
674 | enum btrace_read_type type) override; | |
675 | ||
676 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 677 | bool augmented_libraries_svr4_read () override; |
5ab2fbf1 | 678 | bool follow_fork (bool, bool) override; |
4ca51187 | 679 | void follow_exec (struct inferior *, const char *) override; |
f6ac5f3d PA |
680 | int insert_fork_catchpoint (int) override; |
681 | int remove_fork_catchpoint (int) override; | |
682 | int insert_vfork_catchpoint (int) override; | |
683 | int remove_vfork_catchpoint (int) override; | |
684 | int insert_exec_catchpoint (int) override; | |
685 | int remove_exec_catchpoint (int) override; | |
686 | enum exec_direction_kind execution_direction () override; | |
687 | ||
6b8edb51 PA |
688 | public: /* Remote specific methods. */ |
689 | ||
690 | void remote_download_command_source (int num, ULONGEST addr, | |
691 | struct command_line *cmds); | |
692 | ||
693 | void remote_file_put (const char *local_file, const char *remote_file, | |
694 | int from_tty); | |
695 | void remote_file_get (const char *remote_file, const char *local_file, | |
696 | int from_tty); | |
697 | void remote_file_delete (const char *remote_file, int from_tty); | |
698 | ||
699 | int remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
700 | ULONGEST offset, int *remote_errno); | |
701 | int remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
702 | ULONGEST offset, int *remote_errno); | |
703 | int remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
704 | ULONGEST offset, int *remote_errno); | |
705 | ||
706 | int remote_hostio_send_command (int command_bytes, int which_packet, | |
707 | int *remote_errno, char **attachment, | |
708 | int *attachment_len); | |
709 | int remote_hostio_set_filesystem (struct inferior *inf, | |
710 | int *remote_errno); | |
711 | /* We should get rid of this and use fileio_open directly. */ | |
712 | int remote_hostio_open (struct inferior *inf, const char *filename, | |
713 | int flags, int mode, int warn_if_slow, | |
714 | int *remote_errno); | |
715 | int remote_hostio_close (int fd, int *remote_errno); | |
716 | ||
717 | int remote_hostio_unlink (inferior *inf, const char *filename, | |
718 | int *remote_errno); | |
719 | ||
720 | struct remote_state *get_remote_state (); | |
721 | ||
722 | long get_remote_packet_size (void); | |
723 | long get_memory_packet_size (struct memory_packet_config *config); | |
724 | ||
725 | long get_memory_write_packet_size (); | |
726 | long get_memory_read_packet_size (); | |
727 | ||
728 | char *append_pending_thread_resumptions (char *p, char *endp, | |
729 | ptid_t ptid); | |
d9f719f1 | 730 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d | 731 | void start_remote (int from_tty, int extended_p); |
00431a78 | 732 | void remote_detach_1 (struct inferior *inf, int from_tty); |
6b8edb51 PA |
733 | |
734 | char *append_resumption (char *p, char *endp, | |
735 | ptid_t ptid, int step, gdb_signal siggnal); | |
736 | int remote_resume_with_vcont (ptid_t ptid, int step, | |
737 | gdb_signal siggnal); | |
738 | ||
739 | void add_current_inferior_and_thread (char *wait_status); | |
740 | ||
741 | ptid_t wait_ns (ptid_t ptid, struct target_waitstatus *status, | |
742 | int options); | |
743 | ptid_t wait_as (ptid_t ptid, target_waitstatus *status, | |
744 | int options); | |
745 | ||
746 | ptid_t process_stop_reply (struct stop_reply *stop_reply, | |
747 | target_waitstatus *status); | |
748 | ||
749 | void remote_notice_new_inferior (ptid_t currthread, int executing); | |
750 | ||
751 | void process_initial_stop_replies (int from_tty); | |
752 | ||
00431a78 | 753 | thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing); |
6b8edb51 PA |
754 | |
755 | void btrace_sync_conf (const btrace_config *conf); | |
756 | ||
757 | void remote_btrace_maybe_reopen (); | |
758 | ||
759 | void remove_new_fork_children (threads_listing_context *context); | |
760 | void kill_new_fork_children (int pid); | |
761 | void discard_pending_stop_replies (struct inferior *inf); | |
762 | int stop_reply_queue_length (); | |
763 | ||
764 | void check_pending_events_prevent_wildcard_vcont | |
765 | (int *may_global_wildcard_vcont); | |
766 | ||
767 | void discard_pending_stop_replies_in_queue (); | |
768 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
769 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
770 | int peek_stop_reply (ptid_t ptid); | |
bb277751 | 771 | void remote_parse_stop_reply (const char *buf, stop_reply *event); |
6b8edb51 PA |
772 | |
773 | void remote_stop_ns (ptid_t ptid); | |
774 | void remote_interrupt_as (); | |
775 | void remote_interrupt_ns (); | |
776 | ||
777 | char *remote_get_noisy_reply (); | |
778 | int remote_query_attached (int pid); | |
9ab8741a | 779 | inferior *remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 PA |
780 | int try_open_exec); |
781 | ||
782 | ptid_t remote_current_thread (ptid_t oldpid); | |
783 | ptid_t get_current_thread (char *wait_status); | |
784 | ||
785 | void set_thread (ptid_t ptid, int gen); | |
786 | void set_general_thread (ptid_t ptid); | |
787 | void set_continue_thread (ptid_t ptid); | |
788 | void set_general_process (); | |
789 | ||
790 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
791 | ||
792 | int remote_unpack_thread_info_response (char *pkt, threadref *expectedref, | |
793 | gdb_ext_thread_info *info); | |
794 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
795 | gdb_ext_thread_info *info); | |
796 | ||
797 | int parse_threadlist_response (char *pkt, int result_limit, | |
798 | threadref *original_echo, | |
799 | threadref *resultlist, | |
800 | int *doneflag); | |
801 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
802 | int result_limit, int *done, int *result_count, | |
803 | threadref *threadlist); | |
804 | ||
805 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
806 | void *context, int looplimit); | |
807 | ||
808 | int remote_get_threads_with_ql (threads_listing_context *context); | |
809 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
810 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
811 | ||
812 | void extended_remote_restart (); | |
813 | ||
814 | void get_offsets (); | |
815 | ||
816 | void remote_check_symbols (); | |
817 | ||
818 | void remote_supported_packet (const struct protocol_feature *feature, | |
819 | enum packet_support support, | |
820 | const char *argument); | |
821 | ||
822 | void remote_query_supported (); | |
823 | ||
824 | void remote_packet_size (const protocol_feature *feature, | |
825 | packet_support support, const char *value); | |
826 | ||
827 | void remote_serial_quit_handler (); | |
828 | ||
829 | void remote_detach_pid (int pid); | |
830 | ||
831 | void remote_vcont_probe (); | |
832 | ||
833 | void remote_resume_with_hc (ptid_t ptid, int step, | |
834 | gdb_signal siggnal); | |
835 | ||
836 | void send_interrupt_sequence (); | |
837 | void interrupt_query (); | |
838 | ||
839 | void remote_notif_get_pending_events (notif_client *nc); | |
840 | ||
841 | int fetch_register_using_p (struct regcache *regcache, | |
842 | packet_reg *reg); | |
843 | int send_g_packet (); | |
844 | void process_g_packet (struct regcache *regcache); | |
845 | void fetch_registers_using_g (struct regcache *regcache); | |
846 | int store_register_using_P (const struct regcache *regcache, | |
847 | packet_reg *reg); | |
848 | void store_registers_using_G (const struct regcache *regcache); | |
849 | ||
850 | void set_remote_traceframe (); | |
851 | ||
852 | void check_binary_download (CORE_ADDR addr); | |
853 | ||
854 | target_xfer_status remote_write_bytes_aux (const char *header, | |
855 | CORE_ADDR memaddr, | |
856 | const gdb_byte *myaddr, | |
857 | ULONGEST len_units, | |
858 | int unit_size, | |
859 | ULONGEST *xfered_len_units, | |
860 | char packet_format, | |
861 | int use_length); | |
862 | ||
863 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
864 | const gdb_byte *myaddr, ULONGEST len, | |
865 | int unit_size, ULONGEST *xfered_len); | |
866 | ||
867 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
868 | ULONGEST len_units, | |
869 | int unit_size, ULONGEST *xfered_len_units); | |
870 | ||
871 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
872 | ULONGEST memaddr, | |
873 | ULONGEST len, | |
874 | int unit_size, | |
875 | ULONGEST *xfered_len); | |
876 | ||
877 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
878 | gdb_byte *myaddr, ULONGEST len, | |
879 | int unit_size, | |
880 | ULONGEST *xfered_len); | |
881 | ||
882 | packet_result remote_send_printf (const char *format, ...) | |
883 | ATTRIBUTE_PRINTF (2, 3); | |
884 | ||
885 | target_xfer_status remote_flash_write (ULONGEST address, | |
886 | ULONGEST length, ULONGEST *xfered_len, | |
887 | const gdb_byte *data); | |
888 | ||
889 | int readchar (int timeout); | |
890 | ||
891 | void remote_serial_write (const char *str, int len); | |
892 | ||
893 | int putpkt (const char *buf); | |
894 | int putpkt_binary (const char *buf, int cnt); | |
895 | ||
8d64371b TT |
896 | int putpkt (const gdb::char_vector &buf) |
897 | { | |
898 | return putpkt (buf.data ()); | |
899 | } | |
900 | ||
6b8edb51 | 901 | void skip_frame (); |
8d64371b TT |
902 | long read_frame (gdb::char_vector *buf_p); |
903 | void getpkt (gdb::char_vector *buf, int forever); | |
904 | int getpkt_or_notif_sane_1 (gdb::char_vector *buf, int forever, | |
6b8edb51 | 905 | int expecting_notif, int *is_notif); |
8d64371b TT |
906 | int getpkt_sane (gdb::char_vector *buf, int forever); |
907 | int getpkt_or_notif_sane (gdb::char_vector *buf, int forever, | |
6b8edb51 PA |
908 | int *is_notif); |
909 | int remote_vkill (int pid); | |
910 | void remote_kill_k (); | |
911 | ||
912 | void extended_remote_disable_randomization (int val); | |
913 | int extended_remote_run (const std::string &args); | |
914 | ||
915 | void send_environment_packet (const char *action, | |
916 | const char *packet, | |
917 | const char *value); | |
918 | ||
919 | void extended_remote_environment_support (); | |
3c69da40 | 920 | void extended_remote_set_inferior_cwd (); |
80152258 | 921 | |
3c69da40 PA |
922 | target_xfer_status remote_write_qxfer (const char *object_name, |
923 | const char *annex, | |
924 | const gdb_byte *writebuf, | |
925 | ULONGEST offset, LONGEST len, | |
926 | ULONGEST *xfered_len, | |
927 | struct packet_config *packet); | |
43c3a0e4 | 928 | |
3c69da40 PA |
929 | target_xfer_status remote_read_qxfer (const char *object_name, |
930 | const char *annex, | |
931 | gdb_byte *readbuf, ULONGEST offset, | |
932 | LONGEST len, | |
933 | ULONGEST *xfered_len, | |
934 | struct packet_config *packet); | |
43c3a0e4 | 935 | |
3c69da40 | 936 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 937 | |
3c69da40 | 938 | bool vcont_r_supported (); |
43c3a0e4 | 939 | |
3c69da40 | 940 | void packet_command (const char *args, int from_tty); |
43c3a0e4 | 941 | |
3c69da40 | 942 | private: /* data fields */ |
43c3a0e4 | 943 | |
3c69da40 PA |
944 | /* The remote state. Don't reference this directly. Use the |
945 | get_remote_state method instead. */ | |
946 | remote_state m_remote_state; | |
43c3a0e4 PA |
947 | }; |
948 | ||
3c69da40 PA |
949 | static const target_info extended_remote_target_info = { |
950 | "extended-remote", | |
951 | N_("Extended remote serial target in gdb-specific protocol"), | |
952 | remote_doc | |
953 | }; | |
ea9c271d | 954 | |
3c69da40 PA |
955 | /* Set up the extended remote target by extending the standard remote |
956 | target and adding to it. */ | |
957 | ||
958 | class extended_remote_target final : public remote_target | |
ea9c271d | 959 | { |
9d6eea31 | 960 | public: |
3c69da40 PA |
961 | const target_info &info () const override |
962 | { return extended_remote_target_info; } | |
9d6eea31 | 963 | |
3c69da40 PA |
964 | /* Open an extended-remote connection. */ |
965 | static void open (const char *, int); | |
de44f5a7 | 966 | |
3c69da40 PA |
967 | bool can_create_inferior () override { return true; } |
968 | void create_inferior (const char *, const std::string &, | |
969 | char **, int) override; | |
9d6eea31 | 970 | |
3c69da40 | 971 | void detach (inferior *, int) override; |
9d6eea31 | 972 | |
3c69da40 PA |
973 | bool can_attach () override { return true; } |
974 | void attach (const char *, int) override; | |
be2a5f71 | 975 | |
3c69da40 PA |
976 | void post_attach (int) override; |
977 | bool supports_disable_randomization () override; | |
978 | }; | |
1e51243a | 979 | |
3c69da40 | 980 | /* Per-program-space data key. */ |
7b4a314f TT |
981 | static const struct program_space_key<char, gdb::xfree_deleter<char>> |
982 | remote_pspace_data; | |
2d717e4f | 983 | |
3c69da40 PA |
984 | /* The variable registered as the control variable used by the |
985 | remote exec-file commands. While the remote exec-file setting is | |
986 | per-program-space, the set/show machinery uses this as the | |
987 | location of the remote exec-file value. */ | |
988 | static char *remote_exec_file_var; | |
a6f3e723 | 989 | |
3c69da40 PA |
990 | /* The size to align memory write packets, when practical. The protocol |
991 | does not guarantee any alignment, and gdb will generate short | |
992 | writes and unaligned writes, but even as a best-effort attempt this | |
993 | can improve bulk transfers. For instance, if a write is misaligned | |
994 | relative to the target's data bus, the stub may need to make an extra | |
995 | round trip fetching data from the target. This doesn't make a | |
996 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 997 | |
3c69da40 PA |
998 | The alignment chosen is arbitrary; usually data bus width is |
999 | important here, not the possibly larger cache line size. */ | |
1000 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 1001 | |
3c69da40 | 1002 | /* Prototypes for local functions. */ |
74531fed | 1003 | |
3c69da40 | 1004 | static int hexnumlen (ULONGEST num); |
782b2b07 | 1005 | |
3c69da40 | 1006 | static int stubhex (int ch); |
5d93a237 | 1007 | |
3c69da40 | 1008 | static int hexnumstr (char *, ULONGEST); |
048094ac | 1009 | |
3c69da40 | 1010 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 1011 | |
3c69da40 | 1012 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1013 | |
3c69da40 | 1014 | static void print_packet (const char *); |
747dc59d | 1015 | |
3c69da40 | 1016 | static int stub_unpack_int (char *buff, int fieldlength); |
5e4a05c4 | 1017 | |
3c69da40 | 1018 | struct packet_config; |
b73be471 | 1019 | |
3c69da40 | 1020 | static void show_packet_config_cmd (struct packet_config *config); |
280ceea3 | 1021 | |
3c69da40 PA |
1022 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1023 | int from_tty, | |
1024 | struct cmd_list_element *c, | |
1025 | const char *value); | |
8e88304f | 1026 | |
3c69da40 | 1027 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1028 | |
3c69da40 | 1029 | static void remote_async_inferior_event_handler (gdb_client_data); |
b80fafe3 | 1030 | |
eefce37f | 1031 | static bool remote_read_description_p (struct target_ops *target); |
88b496c3 | 1032 | |
05be00a8 | 1033 | static void remote_console_output (const char *msg); |
5965e028 | 1034 | |
3c69da40 | 1035 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1036 | |
5b6d1e4f | 1037 | static void remote_unpush_and_throw (remote_target *target); |
15a201c8 | 1038 | |
3c69da40 | 1039 | /* For "remote". */ |
80152258 | 1040 | |
3c69da40 | 1041 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1042 | |
3c69da40 | 1043 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1044 | |
3c69da40 PA |
1045 | static struct cmd_list_element *remote_set_cmdlist; |
1046 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1047 | |
3c69da40 | 1048 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1049 | |
491144b5 | 1050 | static bool use_range_stepping = true; |
3c69da40 | 1051 | |
7aabaf9d SM |
1052 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1053 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1054 | { |
7aabaf9d SM |
1055 | std::string extra; |
1056 | std::string name; | |
1057 | int core = -1; | |
799a2abe | 1058 | |
f6327dcb KB |
1059 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1060 | sequence of bytes. */ | |
7aabaf9d | 1061 | gdb::byte_vector thread_handle; |
f6327dcb | 1062 | |
799a2abe | 1063 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1064 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1065 | |
1066 | /* This is set to the data address of the access causing the target | |
1067 | to stop for a watchpoint. */ | |
7aabaf9d | 1068 | CORE_ADDR watch_data_address = 0; |
85ad3aaf PA |
1069 | |
1070 | /* Fields used by the vCont action coalescing implemented in | |
1071 | remote_resume / remote_commit_resume. remote_resume stores each | |
1072 | thread's last resume request in these fields, so that a later | |
1073 | remote_commit_resume knows which is the proper action for this | |
1074 | thread to include in the vCont packet. */ | |
1075 | ||
1076 | /* True if the last target_resume call for this thread was a step | |
1077 | request, false if a continue request. */ | |
7aabaf9d | 1078 | int last_resume_step = 0; |
85ad3aaf PA |
1079 | |
1080 | /* The signal specified in the last target_resume call for this | |
1081 | thread. */ | |
7aabaf9d | 1082 | gdb_signal last_resume_sig = GDB_SIGNAL_0; |
85ad3aaf PA |
1083 | |
1084 | /* Whether this thread was already vCont-resumed on the remote | |
1085 | side. */ | |
7aabaf9d | 1086 | int vcont_resumed = 0; |
dc146f7c VP |
1087 | }; |
1088 | ||
de44f5a7 | 1089 | remote_state::remote_state () |
8d64371b | 1090 | : buf (400) |
de44f5a7 | 1091 | { |
de44f5a7 PA |
1092 | } |
1093 | ||
1094 | remote_state::~remote_state () | |
1095 | { | |
1096 | xfree (this->last_pass_packet); | |
1097 | xfree (this->last_program_signals_packet); | |
de44f5a7 PA |
1098 | xfree (this->finished_object); |
1099 | xfree (this->finished_annex); | |
cf792862 TT |
1100 | } |
1101 | ||
35b1e5cc SS |
1102 | /* Utility: generate error from an incoming stub packet. */ |
1103 | static void | |
1104 | trace_error (char *buf) | |
1105 | { | |
1106 | if (*buf++ != 'E') | |
1107 | return; /* not an error msg */ | |
1108 | switch (*buf) | |
1109 | { | |
1110 | case '1': /* malformed packet error */ | |
1111 | if (*++buf == '0') /* general case: */ | |
1112 | error (_("remote.c: error in outgoing packet.")); | |
1113 | else | |
1114 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1115 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1116 | default: |
1117 | error (_("Target returns error code '%s'."), buf); | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1122 | |
6b8edb51 PA |
1123 | char * |
1124 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1125 | { |
b6bb3468 PA |
1126 | struct remote_state *rs = get_remote_state (); |
1127 | ||
35b1e5cc SS |
1128 | do /* Loop on reply from remote stub. */ |
1129 | { | |
1130 | char *buf; | |
a744cf53 | 1131 | |
0df8b418 | 1132 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b TT |
1133 | getpkt (&rs->buf, 0); |
1134 | buf = rs->buf.data (); | |
ad91cd99 | 1135 | if (buf[0] == 'E') |
35b1e5cc | 1136 | trace_error (buf); |
61012eef | 1137 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1138 | { |
1139 | ULONGEST ul; | |
1140 | CORE_ADDR from, to, org_to; | |
256642e8 | 1141 | const char *p, *pp; |
dde08ee1 | 1142 | int adjusted_size = 0; |
7556d4a4 | 1143 | int relocated = 0; |
dde08ee1 PA |
1144 | |
1145 | p = buf + strlen ("qRelocInsn:"); | |
1146 | pp = unpack_varlen_hex (p, &ul); | |
1147 | if (*pp != ';') | |
cb91c06a | 1148 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1149 | from = ul; |
1150 | ||
1151 | p = pp + 1; | |
a9cbf802 | 1152 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1153 | to = ul; |
1154 | ||
1155 | org_to = to; | |
1156 | ||
a70b8144 | 1157 | try |
dde08ee1 | 1158 | { |
f5656ead | 1159 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 1160 | relocated = 1; |
dde08ee1 | 1161 | } |
230d2906 | 1162 | catch (const gdb_exception &ex) |
7556d4a4 PA |
1163 | { |
1164 | if (ex.error == MEMORY_ERROR) | |
1165 | { | |
1166 | /* Propagate memory errors silently back to the | |
1167 | target. The stub may have limited the range of | |
1168 | addresses we can write to, for example. */ | |
1169 | } | |
1170 | else | |
1171 | { | |
1172 | /* Something unexpectedly bad happened. Be verbose | |
1173 | so we can tell what, and propagate the error back | |
1174 | to the stub, so it doesn't get stuck waiting for | |
1175 | a response. */ | |
1176 | exception_fprintf (gdb_stderr, ex, | |
1177 | _("warning: relocating instruction: ")); | |
1178 | } | |
1179 | putpkt ("E01"); | |
1180 | } | |
1181 | ||
1182 | if (relocated) | |
dde08ee1 PA |
1183 | { |
1184 | adjusted_size = to - org_to; | |
1185 | ||
8d64371b | 1186 | xsnprintf (buf, rs->buf.size (), "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1187 | putpkt (buf); |
1188 | } | |
dde08ee1 | 1189 | } |
ad91cd99 | 1190 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1191 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1192 | else | |
0df8b418 | 1193 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1194 | } |
1195 | while (1); | |
1196 | } | |
3c3bea1c | 1197 | |
9d6eea31 PA |
1198 | struct remote_arch_state * |
1199 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1200 | { |
43c3a0e4 PA |
1201 | remote_arch_state *rsa; |
1202 | ||
1203 | auto it = this->m_arch_states.find (gdbarch); | |
1204 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1205 | { |
43c3a0e4 PA |
1206 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1207 | std::forward_as_tuple (gdbarch), | |
1208 | std::forward_as_tuple (gdbarch)); | |
1209 | rsa = &p.first->second; | |
9d6eea31 PA |
1210 | |
1211 | /* Make sure that the packet buffer is plenty big enough for | |
1212 | this architecture. */ | |
8d64371b TT |
1213 | if (this->buf.size () < rsa->remote_packet_size) |
1214 | this->buf.resize (2 * rsa->remote_packet_size); | |
9d6eea31 | 1215 | } |
43c3a0e4 PA |
1216 | else |
1217 | rsa = &it->second; | |
1218 | ||
1219 | return rsa; | |
d01949b6 AC |
1220 | } |
1221 | ||
0b83947e DJ |
1222 | /* Fetch the global remote target state. */ |
1223 | ||
6b8edb51 PA |
1224 | remote_state * |
1225 | remote_target::get_remote_state () | |
0b83947e DJ |
1226 | { |
1227 | /* Make sure that the remote architecture state has been | |
1228 | initialized, because doing so might reallocate rs->buf. Any | |
1229 | function which calls getpkt also needs to be mindful of changes | |
1230 | to rs->buf, but this call limits the number of places which run | |
1231 | into trouble. */ | |
3c69da40 | 1232 | m_remote_state.get_remote_arch_state (target_gdbarch ()); |
0b83947e | 1233 | |
3c69da40 | 1234 | return &m_remote_state; |
0b83947e DJ |
1235 | } |
1236 | ||
94585166 DB |
1237 | /* Fetch the remote exec-file from the current program space. */ |
1238 | ||
1239 | static const char * | |
1240 | get_remote_exec_file (void) | |
1241 | { | |
1242 | char *remote_exec_file; | |
1243 | ||
7b4a314f | 1244 | remote_exec_file = remote_pspace_data.get (current_program_space); |
94585166 DB |
1245 | if (remote_exec_file == NULL) |
1246 | return ""; | |
1247 | ||
1248 | return remote_exec_file; | |
1249 | } | |
1250 | ||
1251 | /* Set the remote exec file for PSPACE. */ | |
1252 | ||
1253 | static void | |
1254 | set_pspace_remote_exec_file (struct program_space *pspace, | |
7b4a314f | 1255 | const char *remote_exec_file) |
94585166 | 1256 | { |
7b4a314f | 1257 | char *old_file = remote_pspace_data.get (pspace); |
94585166 DB |
1258 | |
1259 | xfree (old_file); | |
7b4a314f | 1260 | remote_pspace_data.set (pspace, xstrdup (remote_exec_file)); |
94585166 DB |
1261 | } |
1262 | ||
1263 | /* The "set/show remote exec-file" set command hook. */ | |
1264 | ||
1265 | static void | |
eb4c3f4a | 1266 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1267 | struct cmd_list_element *c) |
1268 | { | |
1269 | gdb_assert (remote_exec_file_var != NULL); | |
1270 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
1271 | } | |
1272 | ||
1273 | /* The "set/show remote exec-file" show command hook. */ | |
1274 | ||
1275 | static void | |
1276 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1277 | struct cmd_list_element *cmd, const char *value) | |
1278 | { | |
acdf84a6 | 1279 | fprintf_filtered (file, "%s\n", get_remote_exec_file ()); |
94585166 DB |
1280 | } |
1281 | ||
c21236dc PA |
1282 | static int |
1283 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1284 | { |
74ca34ce | 1285 | int regnum, num_remote_regs, offset; |
74ca34ce | 1286 | struct packet_reg **remote_regs; |
ea9c271d | 1287 | |
4a22f64d | 1288 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1289 | { |
c21236dc | 1290 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1291 | |
4a22f64d | 1292 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1293 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1294 | r->pnum = -1; | |
1295 | else | |
1296 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1297 | ||
b323314b | 1298 | r->regnum = regnum; |
74ca34ce DJ |
1299 | } |
1300 | ||
1301 | /* Define the g/G packet format as the contents of each register | |
1302 | with a remote protocol number, in order of ascending protocol | |
1303 | number. */ | |
1304 | ||
224c3ddb | 1305 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1306 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1307 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1308 | regnum++) |
c21236dc PA |
1309 | if (regs[regnum].pnum != -1) |
1310 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1311 | |
39ef2f62 CB |
1312 | std::sort (remote_regs, remote_regs + num_remote_regs, |
1313 | [] (const packet_reg *a, const packet_reg *b) | |
1314 | { return a->pnum < b->pnum; }); | |
74ca34ce DJ |
1315 | |
1316 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1317 | { | |
1318 | remote_regs[regnum]->in_g_packet = 1; | |
1319 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1320 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1321 | } |
1322 | ||
c21236dc PA |
1323 | return offset; |
1324 | } | |
1325 | ||
1326 | /* Given the architecture described by GDBARCH, return the remote | |
1327 | protocol register's number and the register's offset in the g/G | |
1328 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1329 | If the target does not have a mapping for REGNUM, return false, | |
1330 | otherwise, return true. */ | |
1331 | ||
1332 | int | |
1333 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1334 | int *pnum, int *poffset) | |
1335 | { | |
c21236dc PA |
1336 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1337 | ||
b80406ac | 1338 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1339 | |
b80406ac | 1340 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1341 | |
1342 | *pnum = regs[regnum].pnum; | |
1343 | *poffset = regs[regnum].offset; | |
1344 | ||
c21236dc PA |
1345 | return *pnum != -1; |
1346 | } | |
1347 | ||
9d6eea31 | 1348 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1349 | { |
c21236dc PA |
1350 | /* Use the architecture to build a regnum<->pnum table, which will be |
1351 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1352 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1353 | |
74ca34ce DJ |
1354 | /* Record the maximum possible size of the g packet - it may turn out |
1355 | to be smaller. */ | |
9d6eea31 PA |
1356 | this->sizeof_g_packet |
1357 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1358 | |
0df8b418 | 1359 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1360 | remote stubs have a hardwired buffer size of 400 bytes |
1361 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1362 | as the maximum packet-size to ensure that the packet and an extra | |
1363 | NUL character can always fit in the buffer. This stops GDB | |
1364 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1365 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1366 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1367 | |
ea9c271d | 1368 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1369 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1370 | |
1371 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1372 | default, adjust the size accordingly. Remember that each byte is |
1373 | encoded as two characters. 32 is the overhead for the packet | |
1374 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1375 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1376 | little. */ |
9d6eea31 PA |
1377 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1378 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1379 | } |
1380 | ||
6b8edb51 PA |
1381 | /* Get a pointer to the current remote target. If not connected to a |
1382 | remote target, return NULL. */ | |
1383 | ||
1384 | static remote_target * | |
1385 | get_current_remote_target () | |
1386 | { | |
5b6d1e4f | 1387 | target_ops *proc_target = current_inferior ()->process_target (); |
6b8edb51 PA |
1388 | return dynamic_cast<remote_target *> (proc_target); |
1389 | } | |
1390 | ||
ea9c271d DJ |
1391 | /* Return the current allowed size of a remote packet. This is |
1392 | inferred from the current architecture, and should be used to | |
1393 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1394 | long |
1395 | remote_target::get_remote_packet_size () | |
ea9c271d | 1396 | { |
be2a5f71 | 1397 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1398 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1399 | |
be2a5f71 DJ |
1400 | if (rs->explicit_packet_size) |
1401 | return rs->explicit_packet_size; | |
1402 | ||
ea9c271d | 1403 | return rsa->remote_packet_size; |
d01949b6 AC |
1404 | } |
1405 | ||
ad10f812 | 1406 | static struct packet_reg * |
5cd63fda PA |
1407 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1408 | long regnum) | |
ad10f812 | 1409 | { |
5cd63fda | 1410 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1411 | return NULL; |
1412 | else | |
ad10f812 | 1413 | { |
ea9c271d | 1414 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1415 | |
b323314b AC |
1416 | gdb_assert (r->regnum == regnum); |
1417 | return r; | |
ad10f812 | 1418 | } |
ad10f812 AC |
1419 | } |
1420 | ||
1421 | static struct packet_reg * | |
5cd63fda PA |
1422 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1423 | LONGEST pnum) | |
ad10f812 | 1424 | { |
b323314b | 1425 | int i; |
a744cf53 | 1426 | |
5cd63fda | 1427 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1428 | { |
ea9c271d | 1429 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1430 | |
b323314b AC |
1431 | if (r->pnum == pnum) |
1432 | return r; | |
ad10f812 AC |
1433 | } |
1434 | return NULL; | |
d01949b6 AC |
1435 | } |
1436 | ||
9a7071a8 JB |
1437 | /* Allow the user to specify what sequence to send to the remote |
1438 | when he requests a program interruption: Although ^C is usually | |
1439 | what remote systems expect (this is the default, here), it is | |
1440 | sometimes preferable to send a break. On other systems such | |
1441 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1442 | is required in order to interrupt the execution. */ | |
1443 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1444 | const char interrupt_sequence_break[] = "BREAK"; | |
1445 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1446 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1447 | { |
1448 | interrupt_sequence_control_c, | |
1449 | interrupt_sequence_break, | |
1450 | interrupt_sequence_break_g, | |
1451 | NULL | |
1452 | }; | |
1453 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1454 | ||
1455 | static void | |
1456 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1457 | struct cmd_list_element *c, | |
1458 | const char *value) | |
1459 | { | |
1460 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
1461 | fprintf_filtered (file, | |
1462 | _("Send the ASCII ETX character (Ctrl-c) " | |
1463 | "to the remote target to interrupt the " | |
1464 | "execution of the program.\n")); | |
1465 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
1466 | fprintf_filtered (file, | |
1467 | _("send a break signal to the remote target " | |
1468 | "to interrupt the execution of the program.\n")); | |
1469 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
1470 | fprintf_filtered (file, | |
1471 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1472 | "the remote target to interrupt the execution " | |
1473 | "of Linux kernel.\n")); | |
1474 | else | |
1475 | internal_error (__FILE__, __LINE__, | |
1476 | _("Invalid value for interrupt_sequence_mode: %s."), | |
1477 | interrupt_sequence_mode); | |
1478 | } | |
6426a772 | 1479 | |
9a7071a8 JB |
1480 | /* This boolean variable specifies whether interrupt_sequence is sent |
1481 | to the remote target when gdb connects to it. | |
1482 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1483 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
491144b5 | 1484 | static bool interrupt_on_connect = false; |
c906108c | 1485 | |
9a7071a8 JB |
1486 | /* This variable is used to implement the "set/show remotebreak" commands. |
1487 | Since these commands are now deprecated in favor of "set/show remote | |
1488 | interrupt-sequence", it no longer has any effect on the code. */ | |
491144b5 | 1489 | static bool remote_break; |
c906108c | 1490 | |
9a7071a8 | 1491 | static void |
eb4c3f4a | 1492 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1493 | { |
1494 | if (remote_break) | |
1495 | interrupt_sequence_mode = interrupt_sequence_break; | |
1496 | else | |
1497 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1498 | } | |
1499 | ||
1500 | static void | |
1501 | show_remotebreak (struct ui_file *file, int from_tty, | |
1502 | struct cmd_list_element *c, | |
1503 | const char *value) | |
1504 | { | |
1505 | } | |
1506 | ||
c906108c SS |
1507 | /* This variable sets the number of bits in an address that are to be |
1508 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1509 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1510 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1511 | initial implementation of remote.c restricted the address sent in | |
1512 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1513 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1514 | address was never sent. Since fixing this bug may cause a break in | |
85102364 | 1515 | some remote targets this variable is principally provided to |
23860348 | 1516 | facilitate backward compatibility. */ |
c906108c | 1517 | |
883b9c6c | 1518 | static unsigned int remote_address_size; |
c906108c | 1519 | |
11cf8741 | 1520 | \f |
11cf8741 | 1521 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1522 | memory read/write packet. MIN (rsa->remote_packet_size, |
1523 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1524 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1525 | (speed up transfers). The variables ``preferred_*'' (the user |
1526 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1527 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1528 | |
1529 | struct memory_packet_config | |
1530 | { | |
a121b7c1 | 1531 | const char *name; |
11cf8741 JM |
1532 | long size; |
1533 | int fixed_p; | |
1534 | }; | |
1535 | ||
cc0be08f PA |
1536 | /* The default max memory-write-packet-size, when the setting is |
1537 | "fixed". The 16k is historical. (It came from older GDB's using | |
1538 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1539 | don't cope very well with large alloca calls.) */ | |
1540 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1541 | |
1542 | /* The minimum remote packet size for memory transfers. Ensures we | |
1543 | can write at least one byte. */ | |
1544 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1545 | ||
cc0be08f PA |
1546 | /* Get the memory packet size, assuming it is fixed. */ |
1547 | ||
1548 | static long | |
1549 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1550 | { | |
1551 | gdb_assert (config->fixed_p); | |
1552 | ||
1553 | if (config->size <= 0) | |
1554 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1555 | else | |
1556 | return config->size; | |
1557 | } | |
1558 | ||
11cf8741 JM |
1559 | /* Compute the current size of a read/write packet. Since this makes |
1560 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1561 | ||
6b8edb51 PA |
1562 | long |
1563 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 1564 | { |
d01949b6 | 1565 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1566 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1567 | |
11cf8741 JM |
1568 | long what_they_get; |
1569 | if (config->fixed_p) | |
cc0be08f | 1570 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1571 | else |
1572 | { | |
ea9c271d | 1573 | what_they_get = get_remote_packet_size (); |
23860348 | 1574 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1575 | if (config->size > 0 |
1576 | && what_they_get > config->size) | |
1577 | what_they_get = config->size; | |
be2a5f71 DJ |
1578 | |
1579 | /* Limit it to the size of the targets ``g'' response unless we have | |
1580 | permission from the stub to use a larger packet size. */ | |
1581 | if (rs->explicit_packet_size == 0 | |
1582 | && rsa->actual_register_packet_size > 0 | |
1583 | && what_they_get > rsa->actual_register_packet_size) | |
1584 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1585 | } |
a5c0808e PA |
1586 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1587 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1588 | |
1589 | /* Make sure there is room in the global buffer for this packet | |
1590 | (including its trailing NUL byte). */ | |
8d64371b TT |
1591 | if (rs->buf.size () < what_they_get + 1) |
1592 | rs->buf.resize (2 * what_they_get); | |
6d820c5c | 1593 | |
11cf8741 JM |
1594 | return what_they_get; |
1595 | } | |
1596 | ||
0df8b418 | 1597 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1598 | something really big then do a sanity check. */ |
11cf8741 JM |
1599 | |
1600 | static void | |
ac88e2de | 1601 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1602 | { |
1603 | int fixed_p = config->fixed_p; | |
1604 | long size = config->size; | |
a744cf53 | 1605 | |
11cf8741 | 1606 | if (args == NULL) |
8a3fe4f8 | 1607 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1608 | else if (strcmp (args, "hard") == 0 |
1609 | || strcmp (args, "fixed") == 0) | |
1610 | fixed_p = 1; | |
1611 | else if (strcmp (args, "soft") == 0 | |
1612 | || strcmp (args, "limit") == 0) | |
1613 | fixed_p = 0; | |
1614 | else | |
1615 | { | |
1616 | char *end; | |
a744cf53 | 1617 | |
11cf8741 JM |
1618 | size = strtoul (args, &end, 0); |
1619 | if (args == end) | |
8a3fe4f8 | 1620 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1621 | |
1622 | /* Instead of explicitly capping the size of a packet to or | |
1623 | disallowing it, the user is allowed to set the size to | |
1624 | something arbitrarily large. */ | |
11cf8741 | 1625 | } |
a5c0808e | 1626 | |
23860348 | 1627 | /* Extra checks? */ |
11cf8741 JM |
1628 | if (fixed_p && !config->fixed_p) |
1629 | { | |
cc0be08f PA |
1630 | /* So that the query shows the correct value. */ |
1631 | long query_size = (size <= 0 | |
1632 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
1633 | : size); | |
1634 | ||
e2e0b3e5 AC |
1635 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1636 | "of %ld bytes. Change the packet size? "), | |
cc0be08f | 1637 | config->name, query_size)) |
8a3fe4f8 | 1638 | error (_("Packet size not changed.")); |
11cf8741 | 1639 | } |
23860348 | 1640 | /* Update the config. */ |
11cf8741 JM |
1641 | config->fixed_p = fixed_p; |
1642 | config->size = size; | |
1643 | } | |
1644 | ||
1645 | static void | |
1646 | show_memory_packet_size (struct memory_packet_config *config) | |
1647 | { | |
cc0be08f PA |
1648 | if (config->size == 0) |
1649 | printf_filtered (_("The %s is 0 (default). "), config->name); | |
1650 | else | |
1651 | printf_filtered (_("The %s is %ld. "), config->name, config->size); | |
11cf8741 | 1652 | if (config->fixed_p) |
a3f17187 | 1653 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
cc0be08f | 1654 | get_fixed_memory_packet_size (config)); |
11cf8741 | 1655 | else |
cc0be08f | 1656 | { |
6b8edb51 | 1657 | remote_target *remote = get_current_remote_target (); |
cc0be08f | 1658 | |
6b8edb51 | 1659 | if (remote != NULL) |
cc0be08f | 1660 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
6b8edb51 | 1661 | remote->get_memory_packet_size (config)); |
cc0be08f PA |
1662 | else |
1663 | puts_filtered ("The actual limit will be further reduced " | |
1664 | "dependent on the target.\n"); | |
1665 | } | |
11cf8741 JM |
1666 | } |
1667 | ||
5b6d1e4f | 1668 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1669 | static struct memory_packet_config memory_write_packet_config = |
1670 | { | |
1671 | "memory-write-packet-size", | |
1672 | }; | |
1673 | ||
1674 | static void | |
ac88e2de | 1675 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1676 | { |
1677 | set_memory_packet_size (args, &memory_write_packet_config); | |
1678 | } | |
1679 | ||
1680 | static void | |
ac88e2de | 1681 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1682 | { |
1683 | show_memory_packet_size (&memory_write_packet_config); | |
1684 | } | |
1685 | ||
055303e2 AB |
1686 | /* Show the number of hardware watchpoints that can be used. */ |
1687 | ||
1688 | static void | |
1689 | show_hardware_watchpoint_limit (struct ui_file *file, int from_tty, | |
1690 | struct cmd_list_element *c, | |
1691 | const char *value) | |
1692 | { | |
1693 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1694 | "watchpoints is %s.\n"), value); | |
1695 | } | |
1696 | ||
1697 | /* Show the length limit (in bytes) for hardware watchpoints. */ | |
1698 | ||
1699 | static void | |
1700 | show_hardware_watchpoint_length_limit (struct ui_file *file, int from_tty, | |
1701 | struct cmd_list_element *c, | |
1702 | const char *value) | |
1703 | { | |
1704 | fprintf_filtered (file, _("The maximum length (in bytes) of a target " | |
1705 | "hardware watchpoint is %s.\n"), value); | |
1706 | } | |
1707 | ||
1708 | /* Show the number of hardware breakpoints that can be used. */ | |
1709 | ||
1710 | static void | |
1711 | show_hardware_breakpoint_limit (struct ui_file *file, int from_tty, | |
1712 | struct cmd_list_element *c, | |
1713 | const char *value) | |
1714 | { | |
1715 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1716 | "breakpoints is %s.\n"), value); | |
1717 | } | |
1718 | ||
6cc8564b LM |
1719 | /* Controls the maximum number of characters to display in the debug output |
1720 | for each remote packet. The remaining characters are omitted. */ | |
1721 | ||
1722 | static int remote_packet_max_chars = 512; | |
1723 | ||
1724 | /* Show the maximum number of characters to display for each remote packet | |
1725 | when remote debugging is enabled. */ | |
1726 | ||
1727 | static void | |
1728 | show_remote_packet_max_chars (struct ui_file *file, int from_tty, | |
1729 | struct cmd_list_element *c, | |
1730 | const char *value) | |
1731 | { | |
1732 | fprintf_filtered (file, _("Number of remote packet characters to " | |
1733 | "display is %s.\n"), value); | |
1734 | } | |
1735 | ||
6b8edb51 PA |
1736 | long |
1737 | remote_target::get_memory_write_packet_size () | |
11cf8741 JM |
1738 | { |
1739 | return get_memory_packet_size (&memory_write_packet_config); | |
1740 | } | |
1741 | ||
5b6d1e4f | 1742 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1743 | static struct memory_packet_config memory_read_packet_config = |
1744 | { | |
1745 | "memory-read-packet-size", | |
1746 | }; | |
1747 | ||
1748 | static void | |
ac88e2de | 1749 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1750 | { |
1751 | set_memory_packet_size (args, &memory_read_packet_config); | |
1752 | } | |
1753 | ||
1754 | static void | |
ac88e2de | 1755 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1756 | { |
1757 | show_memory_packet_size (&memory_read_packet_config); | |
1758 | } | |
1759 | ||
6b8edb51 PA |
1760 | long |
1761 | remote_target::get_memory_read_packet_size () | |
11cf8741 JM |
1762 | { |
1763 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1764 | |
11cf8741 JM |
1765 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1766 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1767 | increased beyond this. */ |
1768 | if (size > get_remote_packet_size ()) | |
1769 | size = get_remote_packet_size (); | |
11cf8741 JM |
1770 | return size; |
1771 | } | |
1772 | ||
11cf8741 | 1773 | \f |
5a2468f5 | 1774 | |
5a2468f5 JM |
1775 | struct packet_config |
1776 | { | |
bb572ddd DJ |
1777 | const char *name; |
1778 | const char *title; | |
4082afcc PA |
1779 | |
1780 | /* If auto, GDB auto-detects support for this packet or feature, | |
1781 | either through qSupported, or by trying the packet and looking | |
1782 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1783 | packet. If false, the packet is disabled. Configs that don't |
1784 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1785 | enum auto_boolean detect; |
4082afcc PA |
1786 | |
1787 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1788 | enum packet_support support; |
1789 | }; | |
1790 | ||
4082afcc PA |
1791 | static enum packet_support packet_config_support (struct packet_config *config); |
1792 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1793 | |
1794 | static void | |
fba45db2 | 1795 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1796 | { |
a121b7c1 | 1797 | const char *support = "internal-error"; |
a744cf53 | 1798 | |
4082afcc | 1799 | switch (packet_config_support (config)) |
5a2468f5 JM |
1800 | { |
1801 | case PACKET_ENABLE: | |
1802 | support = "enabled"; | |
1803 | break; | |
1804 | case PACKET_DISABLE: | |
1805 | support = "disabled"; | |
1806 | break; | |
1807 | case PACKET_SUPPORT_UNKNOWN: | |
1808 | support = "unknown"; | |
1809 | break; | |
1810 | } | |
1811 | switch (config->detect) | |
1812 | { | |
7f19b9a2 | 1813 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1814 | printf_filtered (_("Support for the `%s' packet " |
1815 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1816 | config->name, support); |
5a2468f5 | 1817 | break; |
7f19b9a2 AC |
1818 | case AUTO_BOOLEAN_TRUE: |
1819 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1820 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1821 | config->name, support); | |
8e248173 | 1822 | break; |
5a2468f5 JM |
1823 | } |
1824 | } | |
1825 | ||
1826 | static void | |
bb572ddd DJ |
1827 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1828 | const char *title, int legacy) | |
d471ea57 | 1829 | { |
5a2468f5 JM |
1830 | char *set_doc; |
1831 | char *show_doc; | |
d471ea57 | 1832 | char *cmd_name; |
3ed07be4 | 1833 | |
5a2468f5 JM |
1834 | config->name = name; |
1835 | config->title = title; | |
590042fc | 1836 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet.", |
b435e160 | 1837 | name, title); |
3e43a32a | 1838 | show_doc = xstrprintf ("Show current use of remote " |
590042fc | 1839 | "protocol `%s' (%s) packet.", |
b435e160 | 1840 | name, title); |
d471ea57 | 1841 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1842 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1843 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1844 | &config->detect, set_doc, |
1845 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1846 | NULL, |
bb572ddd DJ |
1847 | show_remote_protocol_packet_cmd, |
1848 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1849 | /* The command code copies the documentation strings. */ |
1850 | xfree (set_doc); | |
1851 | xfree (show_doc); | |
23860348 | 1852 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1853 | if (legacy) |
1854 | { | |
1855 | char *legacy_name; | |
a744cf53 | 1856 | |
b435e160 | 1857 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1858 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1859 | &remote_set_cmdlist); |
d471ea57 | 1860 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1861 | &remote_show_cmdlist); |
d471ea57 | 1862 | } |
5a2468f5 JM |
1863 | } |
1864 | ||
d471ea57 | 1865 | static enum packet_result |
a76d924d | 1866 | packet_check_result (const char *buf) |
5a2468f5 | 1867 | { |
d471ea57 | 1868 | if (buf[0] != '\0') |
5a2468f5 | 1869 | { |
d471ea57 | 1870 | /* The stub recognized the packet request. Check that the |
23860348 | 1871 | operation succeeded. */ |
a76d924d DJ |
1872 | if (buf[0] == 'E' |
1873 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1874 | && buf[3] == '\0') | |
85102364 | 1875 | /* "Enn" - definitely an error. */ |
a76d924d DJ |
1876 | return PACKET_ERROR; |
1877 | ||
1878 | /* Always treat "E." as an error. This will be used for | |
1879 | more verbose error messages, such as E.memtypes. */ | |
1880 | if (buf[0] == 'E' && buf[1] == '.') | |
1881 | return PACKET_ERROR; | |
1882 | ||
1883 | /* The packet may or may not be OK. Just assume it is. */ | |
1884 | return PACKET_OK; | |
1885 | } | |
1886 | else | |
1887 | /* The stub does not support the packet. */ | |
1888 | return PACKET_UNKNOWN; | |
1889 | } | |
1890 | ||
8d64371b TT |
1891 | static enum packet_result |
1892 | packet_check_result (const gdb::char_vector &buf) | |
1893 | { | |
1894 | return packet_check_result (buf.data ()); | |
1895 | } | |
1896 | ||
a76d924d DJ |
1897 | static enum packet_result |
1898 | packet_ok (const char *buf, struct packet_config *config) | |
1899 | { | |
1900 | enum packet_result result; | |
1901 | ||
4082afcc PA |
1902 | if (config->detect != AUTO_BOOLEAN_TRUE |
1903 | && config->support == PACKET_DISABLE) | |
1904 | internal_error (__FILE__, __LINE__, | |
1905 | _("packet_ok: attempt to use a disabled packet")); | |
1906 | ||
a76d924d DJ |
1907 | result = packet_check_result (buf); |
1908 | switch (result) | |
1909 | { | |
1910 | case PACKET_OK: | |
1911 | case PACKET_ERROR: | |
1912 | /* The stub recognized the packet request. */ | |
4082afcc | 1913 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1914 | { |
d471ea57 AC |
1915 | if (remote_debug) |
1916 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1917 | "Packet %s (%s) is supported\n", |
1918 | config->name, config->title); | |
d471ea57 | 1919 | config->support = PACKET_ENABLE; |
d471ea57 | 1920 | } |
a76d924d DJ |
1921 | break; |
1922 | case PACKET_UNKNOWN: | |
23860348 | 1923 | /* The stub does not support the packet. */ |
4082afcc PA |
1924 | if (config->detect == AUTO_BOOLEAN_AUTO |
1925 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1926 | { |
4082afcc PA |
1927 | /* If the stub previously indicated that the packet was |
1928 | supported then there is a protocol error. */ | |
1929 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1930 | config->name, config->title); | |
1931 | } | |
1932 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1933 | { | |
1934 | /* The user set it wrong. */ | |
1935 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1936 | config->name, config->title); | |
d471ea57 | 1937 | } |
4082afcc PA |
1938 | |
1939 | if (remote_debug) | |
1940 | fprintf_unfiltered (gdb_stdlog, | |
1941 | "Packet %s (%s) is NOT supported\n", | |
1942 | config->name, config->title); | |
1943 | config->support = PACKET_DISABLE; | |
a76d924d | 1944 | break; |
5a2468f5 | 1945 | } |
a76d924d DJ |
1946 | |
1947 | return result; | |
5a2468f5 JM |
1948 | } |
1949 | ||
8d64371b TT |
1950 | static enum packet_result |
1951 | packet_ok (const gdb::char_vector &buf, struct packet_config *config) | |
1952 | { | |
1953 | return packet_ok (buf.data (), config); | |
1954 | } | |
1955 | ||
444abaca DJ |
1956 | enum { |
1957 | PACKET_vCont = 0, | |
1958 | PACKET_X, | |
1959 | PACKET_qSymbol, | |
1960 | PACKET_P, | |
1961 | PACKET_p, | |
1962 | PACKET_Z0, | |
1963 | PACKET_Z1, | |
1964 | PACKET_Z2, | |
1965 | PACKET_Z3, | |
1966 | PACKET_Z4, | |
15a201c8 | 1967 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1968 | PACKET_vFile_open, |
1969 | PACKET_vFile_pread, | |
1970 | PACKET_vFile_pwrite, | |
1971 | PACKET_vFile_close, | |
1972 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1973 | PACKET_vFile_readlink, |
0a93529c | 1974 | PACKET_vFile_fstat, |
0876f84a | 1975 | PACKET_qXfer_auxv, |
23181151 | 1976 | PACKET_qXfer_features, |
c78fa86a | 1977 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1978 | PACKET_qXfer_libraries, |
2268b414 | 1979 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1980 | PACKET_qXfer_memory_map, |
07e059b5 | 1981 | PACKET_qXfer_osdata, |
dc146f7c | 1982 | PACKET_qXfer_threads, |
0fb4aa4b | 1983 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1984 | PACKET_qXfer_traceframe_info, |
169081d0 | 1985 | PACKET_qXfer_uib, |
711e434b | 1986 | PACKET_qGetTIBAddr, |
444abaca | 1987 | PACKET_qGetTLSAddr, |
be2a5f71 | 1988 | PACKET_qSupported, |
bd3eecc3 | 1989 | PACKET_qTStatus, |
89be2091 | 1990 | PACKET_QPassSignals, |
82075af2 | 1991 | PACKET_QCatchSyscalls, |
9b224c5e | 1992 | PACKET_QProgramSignals, |
bc3b087d | 1993 | PACKET_QSetWorkingDir, |
aefd8b33 | 1994 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
1995 | PACKET_QEnvironmentHexEncoded, |
1996 | PACKET_QEnvironmentReset, | |
1997 | PACKET_QEnvironmentUnset, | |
936d2992 | 1998 | PACKET_qCRC, |
08388c79 | 1999 | PACKET_qSearch_memory, |
2d717e4f DJ |
2000 | PACKET_vAttach, |
2001 | PACKET_vRun, | |
a6f3e723 | 2002 | PACKET_QStartNoAckMode, |
82f73884 | 2003 | PACKET_vKill, |
4aa995e1 PA |
2004 | PACKET_qXfer_siginfo_read, |
2005 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 2006 | PACKET_qAttached, |
4082afcc PA |
2007 | |
2008 | /* Support for conditional tracepoints. */ | |
782b2b07 | 2009 | PACKET_ConditionalTracepoints, |
4082afcc PA |
2010 | |
2011 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 2012 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
2013 | |
2014 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 2015 | PACKET_BreakpointCommands, |
4082afcc PA |
2016 | |
2017 | /* Support for fast tracepoints. */ | |
7a697b8d | 2018 | PACKET_FastTracepoints, |
4082afcc PA |
2019 | |
2020 | /* Support for static tracepoints. */ | |
0fb4aa4b | 2021 | PACKET_StaticTracepoints, |
4082afcc PA |
2022 | |
2023 | /* Support for installing tracepoints while a trace experiment is | |
2024 | running. */ | |
1e4d1764 | 2025 | PACKET_InstallInTrace, |
4082afcc | 2026 | |
40ab02ce MS |
2027 | PACKET_bc, |
2028 | PACKET_bs, | |
409873ef | 2029 | PACKET_TracepointSource, |
d914c394 | 2030 | PACKET_QAllow, |
78d85199 | 2031 | PACKET_qXfer_fdpic, |
03583c20 | 2032 | PACKET_QDisableRandomization, |
d1feda86 | 2033 | PACKET_QAgent, |
f6f899bf | 2034 | PACKET_QTBuffer_size, |
9accd112 MM |
2035 | PACKET_Qbtrace_off, |
2036 | PACKET_Qbtrace_bts, | |
b20a6524 | 2037 | PACKET_Qbtrace_pt, |
9accd112 | 2038 | PACKET_qXfer_btrace, |
4082afcc PA |
2039 | |
2040 | /* Support for the QNonStop packet. */ | |
2041 | PACKET_QNonStop, | |
2042 | ||
65706a29 PA |
2043 | /* Support for the QThreadEvents packet. */ |
2044 | PACKET_QThreadEvents, | |
2045 | ||
4082afcc PA |
2046 | /* Support for multi-process extensions. */ |
2047 | PACKET_multiprocess_feature, | |
2048 | ||
2049 | /* Support for enabling and disabling tracepoints while a trace | |
2050 | experiment is running. */ | |
2051 | PACKET_EnableDisableTracepoints_feature, | |
2052 | ||
2053 | /* Support for collecting strings using the tracenz bytecode. */ | |
2054 | PACKET_tracenz_feature, | |
2055 | ||
2056 | /* Support for continuing to run a trace experiment while GDB is | |
2057 | disconnected. */ | |
2058 | PACKET_DisconnectedTracing_feature, | |
2059 | ||
2060 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
2061 | PACKET_augmented_libraries_svr4_read_feature, | |
2062 | ||
f4abbc16 MM |
2063 | /* Support for the qXfer:btrace-conf:read packet. */ |
2064 | PACKET_qXfer_btrace_conf, | |
2065 | ||
d33501a5 MM |
2066 | /* Support for the Qbtrace-conf:bts:size packet. */ |
2067 | PACKET_Qbtrace_conf_bts_size, | |
2068 | ||
f7e6eed5 PA |
2069 | /* Support for swbreak+ feature. */ |
2070 | PACKET_swbreak_feature, | |
2071 | ||
2072 | /* Support for hwbreak+ feature. */ | |
2073 | PACKET_hwbreak_feature, | |
2074 | ||
89245bc0 DB |
2075 | /* Support for fork events. */ |
2076 | PACKET_fork_event_feature, | |
2077 | ||
2078 | /* Support for vfork events. */ | |
2079 | PACKET_vfork_event_feature, | |
2080 | ||
b20a6524 MM |
2081 | /* Support for the Qbtrace-conf:pt:size packet. */ |
2082 | PACKET_Qbtrace_conf_pt_size, | |
2083 | ||
94585166 DB |
2084 | /* Support for exec events. */ |
2085 | PACKET_exec_event_feature, | |
2086 | ||
750ce8d1 YQ |
2087 | /* Support for query supported vCont actions. */ |
2088 | PACKET_vContSupported, | |
2089 | ||
de979965 PA |
2090 | /* Support remote CTRL-C. */ |
2091 | PACKET_vCtrlC, | |
2092 | ||
f2faf941 PA |
2093 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
2094 | PACKET_no_resumed, | |
2095 | ||
444abaca DJ |
2096 | PACKET_MAX |
2097 | }; | |
506fb367 | 2098 | |
5b6d1e4f PA |
2099 | /* FIXME: needs to be per-remote-target. Ignoring this for now, |
2100 | assuming all remote targets are the same server (thus all support | |
2101 | the same packets). */ | |
444abaca | 2102 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 2103 | |
f7e6eed5 PA |
2104 | /* Returns the packet's corresponding "set remote foo-packet" command |
2105 | state. See struct packet_config for more details. */ | |
2106 | ||
2107 | static enum auto_boolean | |
2108 | packet_set_cmd_state (int packet) | |
2109 | { | |
2110 | return remote_protocol_packets[packet].detect; | |
2111 | } | |
2112 | ||
4082afcc PA |
2113 | /* Returns whether a given packet or feature is supported. This takes |
2114 | into account the state of the corresponding "set remote foo-packet" | |
2115 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2116 | |
4082afcc PA |
2117 | static enum packet_support |
2118 | packet_config_support (struct packet_config *config) | |
2119 | { | |
2120 | switch (config->detect) | |
444abaca | 2121 | { |
4082afcc PA |
2122 | case AUTO_BOOLEAN_TRUE: |
2123 | return PACKET_ENABLE; | |
2124 | case AUTO_BOOLEAN_FALSE: | |
2125 | return PACKET_DISABLE; | |
2126 | case AUTO_BOOLEAN_AUTO: | |
2127 | return config->support; | |
2128 | default: | |
2129 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 2130 | } |
4082afcc PA |
2131 | } |
2132 | ||
2133 | /* Same as packet_config_support, but takes the packet's enum value as | |
2134 | argument. */ | |
2135 | ||
2136 | static enum packet_support | |
2137 | packet_support (int packet) | |
2138 | { | |
2139 | struct packet_config *config = &remote_protocol_packets[packet]; | |
2140 | ||
2141 | return packet_config_support (config); | |
dc8acb97 MS |
2142 | } |
2143 | ||
5a2468f5 | 2144 | static void |
444abaca DJ |
2145 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2146 | struct cmd_list_element *c, | |
2147 | const char *value) | |
5a2468f5 | 2148 | { |
444abaca | 2149 | struct packet_config *packet; |
5a2468f5 | 2150 | |
444abaca DJ |
2151 | for (packet = remote_protocol_packets; |
2152 | packet < &remote_protocol_packets[PACKET_MAX]; | |
2153 | packet++) | |
2154 | { | |
2155 | if (&packet->detect == c->var) | |
2156 | { | |
2157 | show_packet_config_cmd (packet); | |
2158 | return; | |
2159 | } | |
2160 | } | |
9b20d036 | 2161 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 2162 | c->name); |
5a2468f5 JM |
2163 | } |
2164 | ||
d471ea57 AC |
2165 | /* Should we try one of the 'Z' requests? */ |
2166 | ||
2167 | enum Z_packet_type | |
2168 | { | |
2169 | Z_PACKET_SOFTWARE_BP, | |
2170 | Z_PACKET_HARDWARE_BP, | |
2171 | Z_PACKET_WRITE_WP, | |
2172 | Z_PACKET_READ_WP, | |
2173 | Z_PACKET_ACCESS_WP, | |
2174 | NR_Z_PACKET_TYPES | |
2175 | }; | |
96baa820 | 2176 | |
d471ea57 | 2177 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2178 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2179 | |
7f19b9a2 | 2180 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2181 | |
2182 | static void | |
eb4c3f4a | 2183 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2184 | struct cmd_list_element *c) |
96baa820 | 2185 | { |
d471ea57 | 2186 | int i; |
a744cf53 | 2187 | |
d471ea57 | 2188 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 2189 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
2190 | } |
2191 | ||
2192 | static void | |
08546159 AC |
2193 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2194 | struct cmd_list_element *c, | |
2195 | const char *value) | |
96baa820 | 2196 | { |
d471ea57 | 2197 | int i; |
a744cf53 | 2198 | |
d471ea57 AC |
2199 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2200 | { | |
444abaca | 2201 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 2202 | } |
96baa820 JM |
2203 | } |
2204 | ||
4082afcc PA |
2205 | /* Returns true if the multi-process extensions are in effect. */ |
2206 | ||
2207 | static int | |
2208 | remote_multi_process_p (struct remote_state *rs) | |
2209 | { | |
2210 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
2211 | } | |
2212 | ||
de0d863e DB |
2213 | /* Returns true if fork events are supported. */ |
2214 | ||
2215 | static int | |
2216 | remote_fork_event_p (struct remote_state *rs) | |
2217 | { | |
2218 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
2219 | } | |
2220 | ||
c269dbdb DB |
2221 | /* Returns true if vfork events are supported. */ |
2222 | ||
2223 | static int | |
2224 | remote_vfork_event_p (struct remote_state *rs) | |
2225 | { | |
2226 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
2227 | } | |
2228 | ||
d46addbb DB |
2229 | /* Returns true if exec events are supported. */ |
2230 | ||
2231 | static int | |
2232 | remote_exec_event_p (struct remote_state *rs) | |
2233 | { | |
2234 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
2235 | } | |
2236 | ||
cbb8991c DB |
2237 | /* Insert fork catchpoint target routine. If fork events are enabled |
2238 | then return success, nothing more to do. */ | |
2239 | ||
f6ac5f3d PA |
2240 | int |
2241 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
2242 | { |
2243 | struct remote_state *rs = get_remote_state (); | |
2244 | ||
2245 | return !remote_fork_event_p (rs); | |
2246 | } | |
2247 | ||
2248 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2249 | return success. */ | |
2250 | ||
f6ac5f3d PA |
2251 | int |
2252 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2253 | { |
2254 | return 0; | |
2255 | } | |
2256 | ||
2257 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2258 | then return success, nothing more to do. */ | |
2259 | ||
f6ac5f3d PA |
2260 | int |
2261 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
2262 | { |
2263 | struct remote_state *rs = get_remote_state (); | |
2264 | ||
2265 | return !remote_vfork_event_p (rs); | |
2266 | } | |
2267 | ||
2268 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2269 | return success. */ | |
2270 | ||
f6ac5f3d PA |
2271 | int |
2272 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2273 | { |
2274 | return 0; | |
2275 | } | |
2276 | ||
d46addbb DB |
2277 | /* Insert exec catchpoint target routine. If exec events are |
2278 | enabled, just return success. */ | |
2279 | ||
f6ac5f3d PA |
2280 | int |
2281 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
2282 | { |
2283 | struct remote_state *rs = get_remote_state (); | |
2284 | ||
2285 | return !remote_exec_event_p (rs); | |
2286 | } | |
2287 | ||
2288 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2289 | return success. */ | |
2290 | ||
f6ac5f3d PA |
2291 | int |
2292 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2293 | { |
2294 | return 0; | |
2295 | } | |
2296 | ||
c906108c SS |
2297 | \f |
2298 | ||
ffdd69cf TT |
2299 | /* Take advantage of the fact that the TID field is not used, to tag |
2300 | special ptids with it set to != 0. */ | |
2301 | static const ptid_t magic_null_ptid (42000, -1, 1); | |
2302 | static const ptid_t not_sent_ptid (42000, -2, 1); | |
2303 | static const ptid_t any_thread_ptid (42000, 0, 1); | |
79d7f229 | 2304 | |
0b16c5cf PA |
2305 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2306 | detach instead of killing it when bailing out). */ | |
2307 | ||
6b8edb51 PA |
2308 | int |
2309 | remote_target::remote_query_attached (int pid) | |
0b16c5cf PA |
2310 | { |
2311 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2312 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2313 | |
4082afcc | 2314 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2315 | return 0; |
2316 | ||
2317 | if (remote_multi_process_p (rs)) | |
8d64371b | 2318 | xsnprintf (rs->buf.data (), size, "qAttached:%x", pid); |
0b16c5cf | 2319 | else |
8d64371b | 2320 | xsnprintf (rs->buf.data (), size, "qAttached"); |
0b16c5cf PA |
2321 | |
2322 | putpkt (rs->buf); | |
8d64371b | 2323 | getpkt (&rs->buf, 0); |
0b16c5cf PA |
2324 | |
2325 | switch (packet_ok (rs->buf, | |
1554e9be | 2326 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
2327 | { |
2328 | case PACKET_OK: | |
8d64371b | 2329 | if (strcmp (rs->buf.data (), "1") == 0) |
0b16c5cf PA |
2330 | return 1; |
2331 | break; | |
2332 | case PACKET_ERROR: | |
8d64371b | 2333 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
0b16c5cf PA |
2334 | break; |
2335 | case PACKET_UNKNOWN: | |
2336 | break; | |
2337 | } | |
2338 | ||
2339 | return 0; | |
2340 | } | |
2341 | ||
49c62f2e PA |
2342 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2343 | has been invented by GDB, instead of reported by the target. Since | |
2344 | we can be connected to a remote system before before knowing about | |
2345 | any inferior, mark the target with execution when we find the first | |
2346 | inferior. If ATTACHED is 1, then we had just attached to this | |
2347 | inferior. If it is 0, then we just created this inferior. If it | |
2348 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2349 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2350 | attempt to open this inferior's executable as the main executable | |
2351 | if no main executable is open already. */ | |
1941c569 | 2352 | |
6b8edb51 | 2353 | inferior * |
9ab8741a | 2354 | remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 | 2355 | int try_open_exec) |
1941c569 | 2356 | { |
1941c569 PA |
2357 | struct inferior *inf; |
2358 | ||
0b16c5cf PA |
2359 | /* Check whether this process we're learning about is to be |
2360 | considered attached, or if is to be considered to have been | |
2361 | spawned by the stub. */ | |
2362 | if (attached == -1) | |
2363 | attached = remote_query_attached (pid); | |
2364 | ||
f5656ead | 2365 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2366 | { |
2367 | /* If the target shares code across all inferiors, then every | |
2368 | attach adds a new inferior. */ | |
2369 | inf = add_inferior (pid); | |
2370 | ||
2371 | /* ... and every inferior is bound to the same program space. | |
2372 | However, each inferior may still have its own address | |
2373 | space. */ | |
2374 | inf->aspace = maybe_new_address_space (); | |
2375 | inf->pspace = current_program_space; | |
2376 | } | |
2377 | else | |
2378 | { | |
2379 | /* In the traditional debugging scenario, there's a 1-1 match | |
2380 | between program/address spaces. We simply bind the inferior | |
2381 | to the program space's address space. */ | |
2382 | inf = current_inferior (); | |
78f2c40a PA |
2383 | |
2384 | /* However, if the current inferior is already bound to a | |
2385 | process, find some other empty inferior. */ | |
2386 | if (inf->pid != 0) | |
2387 | { | |
2388 | inf = nullptr; | |
2389 | for (inferior *it : all_inferiors ()) | |
2390 | if (it->pid == 0) | |
2391 | { | |
2392 | inf = it; | |
2393 | break; | |
2394 | } | |
2395 | } | |
2396 | if (inf == nullptr) | |
2397 | { | |
2398 | /* Since all inferiors were already bound to a process, add | |
2399 | a new inferior. */ | |
2400 | inf = add_inferior_with_spaces (); | |
2401 | } | |
2402 | switch_to_inferior_no_thread (inf); | |
5b6d1e4f | 2403 | push_target (this); |
6c95b8df PA |
2404 | inferior_appeared (inf, pid); |
2405 | } | |
1941c569 | 2406 | |
0b16c5cf | 2407 | inf->attach_flag = attached; |
49c62f2e | 2408 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2409 | |
1b6e6f5c GB |
2410 | /* If no main executable is currently open then attempt to |
2411 | open the file that was executed to create this inferior. */ | |
835205d0 | 2412 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2413 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2414 | |
a2fedca9 PW |
2415 | /* Check for exec file mismatch, and let the user solve it. */ |
2416 | validate_exec_file (1); | |
2417 | ||
1941c569 PA |
2418 | return inf; |
2419 | } | |
2420 | ||
7aabaf9d | 2421 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
5b6d1e4f PA |
2422 | static remote_thread_info *get_remote_thread_info (remote_target *target, |
2423 | ptid_t ptid); | |
85ad3aaf | 2424 | |
1941c569 PA |
2425 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
2426 | according to RUNNING. */ | |
2427 | ||
00431a78 | 2428 | thread_info * |
6b8edb51 | 2429 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing) |
c906108c | 2430 | { |
b7ea362b | 2431 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2432 | struct thread_info *thread; |
b7ea362b PA |
2433 | |
2434 | /* GDB historically didn't pull threads in the initial connection | |
2435 | setup. If the remote target doesn't even have a concept of | |
2436 | threads (e.g., a bare-metal target), even if internally we | |
2437 | consider that a single-threaded target, mentioning a new thread | |
2438 | might be confusing to the user. Be silent then, preserving the | |
2439 | age old behavior. */ | |
2440 | if (rs->starting_up) | |
5b6d1e4f | 2441 | thread = add_thread_silent (this, ptid); |
b7ea362b | 2442 | else |
5b6d1e4f | 2443 | thread = add_thread (this, ptid); |
1941c569 | 2444 | |
7aabaf9d | 2445 | get_remote_thread_info (thread)->vcont_resumed = executing; |
5b6d1e4f PA |
2446 | set_executing (this, ptid, executing); |
2447 | set_running (this, ptid, running); | |
00431a78 PA |
2448 | |
2449 | return thread; | |
1941c569 PA |
2450 | } |
2451 | ||
2452 | /* Come here when we learn about a thread id from the remote target. | |
2453 | It may be the first time we hear about such thread, so take the | |
2454 | opportunity to add it to GDB's thread list. In case this is the | |
2455 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2456 | GDB's inferior list as well. EXECUTING indicates whether the |
2457 | thread is (internally) executing or stopped. */ | |
1941c569 | 2458 | |
6b8edb51 PA |
2459 | void |
2460 | remote_target::remote_notice_new_inferior (ptid_t currthread, int executing) | |
1941c569 | 2461 | { |
0d5b594f PA |
2462 | /* In non-stop mode, we assume new found threads are (externally) |
2463 | running until proven otherwise with a stop reply. In all-stop, | |
2464 | we can only get here if all threads are stopped. */ | |
2465 | int running = target_is_non_stop_p () ? 1 : 0; | |
2466 | ||
c906108c SS |
2467 | /* If this is a new thread, add it to GDB's thread list. |
2468 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 | 2469 | |
5b6d1e4f | 2470 | thread_info *tp = find_thread_ptid (this, currthread); |
00431a78 | 2471 | if (tp != NULL && tp->state == THREAD_EXITED) |
82f73884 PA |
2472 | { |
2473 | /* We're seeing an event on a thread id we knew had exited. | |
2474 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 2475 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
2476 | return; |
2477 | } | |
2478 | ||
5b6d1e4f | 2479 | if (!in_thread_list (this, currthread)) |
c0a2216e | 2480 | { |
1941c569 | 2481 | struct inferior *inf = NULL; |
e99b03dc | 2482 | int pid = currthread.pid (); |
1941c569 | 2483 | |
0e998d96 | 2484 | if (inferior_ptid.is_pid () |
e99b03dc | 2485 | && pid == inferior_ptid.pid ()) |
c0a2216e PA |
2486 | { |
2487 | /* inferior_ptid has no thread member yet. This can happen | |
2488 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2489 | stub doesn't support qC. This is the first stop reported | |
2490 | after an attach, so this is the main thread. Update the | |
2491 | ptid in the thread list. */ | |
5b6d1e4f PA |
2492 | if (in_thread_list (this, ptid_t (pid))) |
2493 | thread_change_ptid (this, inferior_ptid, currthread); | |
bad34192 PA |
2494 | else |
2495 | { | |
0d5b594f | 2496 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
2497 | inferior_ptid = currthread; |
2498 | } | |
dc146f7c | 2499 | return; |
c0a2216e | 2500 | } |
82f73884 | 2501 | |
d7e15655 | 2502 | if (magic_null_ptid == inferior_ptid) |
c0a2216e PA |
2503 | { |
2504 | /* inferior_ptid is not set yet. This can happen with the | |
2505 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2506 | doesn't support qC. This is the first stop reported | |
2507 | after an attach, so this is the main thread. Update the | |
2508 | ptid in the thread list. */ | |
5b6d1e4f | 2509 | thread_change_ptid (this, inferior_ptid, currthread); |
82f73884 | 2510 | return; |
c0a2216e | 2511 | } |
82f73884 | 2512 | |
29c87f7f PA |
2513 | /* When connecting to a target remote, or to a target |
2514 | extended-remote which already was debugging an inferior, we | |
2515 | may not know about it yet. Add it before adding its child | |
2516 | thread, so notifications are emitted in a sensible order. */ | |
5b6d1e4f | 2517 | if (find_inferior_pid (this, currthread.pid ()) == NULL) |
49c62f2e PA |
2518 | { |
2519 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 2520 | bool fake_pid_p = !remote_multi_process_p (rs); |
49c62f2e PA |
2521 | |
2522 | inf = remote_add_inferior (fake_pid_p, | |
e99b03dc | 2523 | currthread.pid (), -1, 1); |
49c62f2e | 2524 | } |
29c87f7f | 2525 | |
82f73884 | 2526 | /* This is really a new thread. Add it. */ |
00431a78 PA |
2527 | thread_info *new_thr |
2528 | = remote_add_thread (currthread, running, executing); | |
1941c569 PA |
2529 | |
2530 | /* If we found a new inferior, let the common code do whatever | |
2531 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2532 | breakpoints), unless we're just setting up an all-stop |
2533 | connection. */ | |
1941c569 | 2534 | if (inf != NULL) |
b7ea362b PA |
2535 | { |
2536 | struct remote_state *rs = get_remote_state (); | |
2537 | ||
6efcd9a8 | 2538 | if (!rs->starting_up) |
00431a78 | 2539 | notice_new_inferior (new_thr, executing, 0); |
b7ea362b | 2540 | } |
c0a2216e | 2541 | } |
c906108c SS |
2542 | } |
2543 | ||
85ad3aaf | 2544 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2545 | |
7aabaf9d SM |
2546 | static remote_thread_info * |
2547 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2548 | { |
85ad3aaf | 2549 | gdb_assert (thread != NULL); |
dc146f7c | 2550 | |
85ad3aaf | 2551 | if (thread->priv == NULL) |
7aabaf9d | 2552 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2553 | |
7aabaf9d | 2554 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2555 | } |
2556 | ||
5b6d1e4f PA |
2557 | /* Return PTID's private thread data, creating it if necessary. */ |
2558 | ||
7aabaf9d | 2559 | static remote_thread_info * |
5b6d1e4f | 2560 | get_remote_thread_info (remote_target *target, ptid_t ptid) |
85ad3aaf | 2561 | { |
5b6d1e4f | 2562 | thread_info *thr = find_thread_ptid (target, ptid); |
00431a78 | 2563 | return get_remote_thread_info (thr); |
dc146f7c VP |
2564 | } |
2565 | ||
74531fed PA |
2566 | /* Call this function as a result of |
2567 | 1) A halt indication (T packet) containing a thread id | |
2568 | 2) A direct query of currthread | |
0df8b418 | 2569 | 3) Successful execution of set thread */ |
74531fed PA |
2570 | |
2571 | static void | |
47f8a51d | 2572 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2573 | { |
47f8a51d | 2574 | rs->general_thread = currthread; |
74531fed PA |
2575 | } |
2576 | ||
89be2091 DJ |
2577 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2578 | it can simply pass through to the inferior without reporting. */ | |
2579 | ||
f6ac5f3d | 2580 | void |
adc6a863 | 2581 | remote_target::pass_signals (gdb::array_view<const unsigned char> pass_signals) |
89be2091 | 2582 | { |
4082afcc | 2583 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2584 | { |
2585 | char *pass_packet, *p; | |
adc6a863 | 2586 | int count = 0; |
747dc59d | 2587 | struct remote_state *rs = get_remote_state (); |
89be2091 | 2588 | |
adc6a863 PA |
2589 | gdb_assert (pass_signals.size () < 256); |
2590 | for (size_t i = 0; i < pass_signals.size (); i++) | |
89be2091 | 2591 | { |
2455069d | 2592 | if (pass_signals[i]) |
89be2091 DJ |
2593 | count++; |
2594 | } | |
224c3ddb | 2595 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2596 | strcpy (pass_packet, "QPassSignals:"); |
2597 | p = pass_packet + strlen (pass_packet); | |
adc6a863 | 2598 | for (size_t i = 0; i < pass_signals.size (); i++) |
89be2091 | 2599 | { |
2455069d | 2600 | if (pass_signals[i]) |
89be2091 DJ |
2601 | { |
2602 | if (i >= 16) | |
2603 | *p++ = tohex (i >> 4); | |
2604 | *p++ = tohex (i & 15); | |
2605 | if (count) | |
2606 | *p++ = ';'; | |
2607 | else | |
2608 | break; | |
2609 | count--; | |
2610 | } | |
2611 | } | |
2612 | *p = 0; | |
747dc59d | 2613 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2614 | { |
89be2091 | 2615 | putpkt (pass_packet); |
8d64371b | 2616 | getpkt (&rs->buf, 0); |
8dc5b319 | 2617 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
2618 | if (rs->last_pass_packet) |
2619 | xfree (rs->last_pass_packet); | |
2620 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2621 | } |
2622 | else | |
2623 | xfree (pass_packet); | |
2624 | } | |
2625 | } | |
2626 | ||
82075af2 JS |
2627 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2628 | to report syscalls to GDB. */ | |
2629 | ||
f6ac5f3d PA |
2630 | int |
2631 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2632 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2633 | { |
b80406ac | 2634 | const char *catch_packet; |
82075af2 JS |
2635 | enum packet_result result; |
2636 | int n_sysno = 0; | |
2637 | ||
2638 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2639 | { | |
2640 | /* Not supported. */ | |
2641 | return 1; | |
2642 | } | |
2643 | ||
649a140c | 2644 | if (needed && any_count == 0) |
82075af2 | 2645 | { |
649a140c PA |
2646 | /* Count how many syscalls are to be caught. */ |
2647 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2648 | { |
649a140c | 2649 | if (syscall_counts[i] != 0) |
82075af2 JS |
2650 | n_sysno++; |
2651 | } | |
2652 | } | |
2653 | ||
2654 | if (remote_debug) | |
2655 | { | |
2656 | fprintf_unfiltered (gdb_stdlog, | |
2657 | "remote_set_syscall_catchpoint " | |
2658 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2659 | pid, needed, any_count, n_sysno); | |
2660 | } | |
2661 | ||
1b81856f | 2662 | std::string built_packet; |
82075af2 JS |
2663 | if (needed) |
2664 | { | |
2665 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2666 | characters for a sysno. If the resulting packet size is too | |
2667 | big, fallback on the non-selective packet. */ | |
2668 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2669 | built_packet.reserve (maxpktsz); |
2670 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2671 | if (any_count == 0) |
82075af2 | 2672 | { |
649a140c PA |
2673 | /* Add in each syscall to be caught. */ |
2674 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2675 | { |
649a140c PA |
2676 | if (syscall_counts[i] != 0) |
2677 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2678 | } |
2679 | } | |
1b81856f | 2680 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2681 | { |
2682 | /* catch_packet too big. Fallback to less efficient | |
2683 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2684 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2685 | } |
b80406ac | 2686 | else |
1b81856f | 2687 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2688 | } |
2689 | else | |
b80406ac | 2690 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2691 | |
b80406ac | 2692 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2693 | |
b80406ac | 2694 | putpkt (catch_packet); |
8d64371b | 2695 | getpkt (&rs->buf, 0); |
b80406ac TT |
2696 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); |
2697 | if (result == PACKET_OK) | |
2698 | return 0; | |
2699 | else | |
2700 | return -1; | |
82075af2 JS |
2701 | } |
2702 | ||
9b224c5e PA |
2703 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2704 | signals it should pass through to the inferior when detaching. */ | |
2705 | ||
f6ac5f3d | 2706 | void |
adc6a863 | 2707 | remote_target::program_signals (gdb::array_view<const unsigned char> signals) |
9b224c5e | 2708 | { |
4082afcc | 2709 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2710 | { |
2711 | char *packet, *p; | |
adc6a863 | 2712 | int count = 0; |
5e4a05c4 | 2713 | struct remote_state *rs = get_remote_state (); |
9b224c5e | 2714 | |
adc6a863 PA |
2715 | gdb_assert (signals.size () < 256); |
2716 | for (size_t i = 0; i < signals.size (); i++) | |
9b224c5e PA |
2717 | { |
2718 | if (signals[i]) | |
2719 | count++; | |
2720 | } | |
224c3ddb | 2721 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2722 | strcpy (packet, "QProgramSignals:"); |
2723 | p = packet + strlen (packet); | |
adc6a863 | 2724 | for (size_t i = 0; i < signals.size (); i++) |
9b224c5e PA |
2725 | { |
2726 | if (signal_pass_state (i)) | |
2727 | { | |
2728 | if (i >= 16) | |
2729 | *p++ = tohex (i >> 4); | |
2730 | *p++ = tohex (i & 15); | |
2731 | if (count) | |
2732 | *p++ = ';'; | |
2733 | else | |
2734 | break; | |
2735 | count--; | |
2736 | } | |
2737 | } | |
2738 | *p = 0; | |
5e4a05c4 TT |
2739 | if (!rs->last_program_signals_packet |
2740 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2741 | { |
9b224c5e | 2742 | putpkt (packet); |
8d64371b | 2743 | getpkt (&rs->buf, 0); |
8dc5b319 | 2744 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2745 | xfree (rs->last_program_signals_packet); |
2746 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2747 | } |
2748 | else | |
2749 | xfree (packet); | |
2750 | } | |
2751 | } | |
2752 | ||
79d7f229 PA |
2753 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2754 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2755 | thread. If GEN is set, set the general thread, if not, then set | |
2756 | the step/continue thread. */ | |
6b8edb51 PA |
2757 | void |
2758 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 2759 | { |
d01949b6 | 2760 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2761 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
8d64371b TT |
2762 | char *buf = rs->buf.data (); |
2763 | char *endbuf = buf + get_remote_packet_size (); | |
c906108c | 2764 | |
d7e15655 | 2765 | if (state == ptid) |
c906108c SS |
2766 | return; |
2767 | ||
79d7f229 PA |
2768 | *buf++ = 'H'; |
2769 | *buf++ = gen ? 'g' : 'c'; | |
d7e15655 | 2770 | if (ptid == magic_null_ptid) |
79d7f229 | 2771 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2772 | else if (ptid == any_thread_ptid) |
79d7f229 | 2773 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2774 | else if (ptid == minus_one_ptid) |
79d7f229 PA |
2775 | xsnprintf (buf, endbuf - buf, "-1"); |
2776 | else | |
82f73884 | 2777 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2778 | putpkt (rs->buf); |
8d64371b | 2779 | getpkt (&rs->buf, 0); |
c906108c | 2780 | if (gen) |
47f8a51d | 2781 | rs->general_thread = ptid; |
c906108c | 2782 | else |
47f8a51d | 2783 | rs->continue_thread = ptid; |
c906108c | 2784 | } |
79d7f229 | 2785 | |
6b8edb51 PA |
2786 | void |
2787 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
2788 | { |
2789 | set_thread (ptid, 1); | |
2790 | } | |
2791 | ||
6b8edb51 PA |
2792 | void |
2793 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
2794 | { |
2795 | set_thread (ptid, 0); | |
2796 | } | |
2797 | ||
3c9c4b83 PA |
2798 | /* Change the remote current process. Which thread within the process |
2799 | ends up selected isn't important, as long as it is the same process | |
2800 | as what INFERIOR_PTID points to. | |
2801 | ||
2802 | This comes from that fact that there is no explicit notion of | |
2803 | "selected process" in the protocol. The selected process for | |
2804 | general operations is the process the selected general thread | |
2805 | belongs to. */ | |
2806 | ||
6b8edb51 PA |
2807 | void |
2808 | remote_target::set_general_process () | |
3c9c4b83 PA |
2809 | { |
2810 | struct remote_state *rs = get_remote_state (); | |
2811 | ||
2812 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2813 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2814 | return; |
2815 | ||
2816 | /* We only need to change the remote current thread if it's pointing | |
2817 | at some other process. */ | |
e99b03dc | 2818 | if (rs->general_thread.pid () != inferior_ptid.pid ()) |
3c9c4b83 PA |
2819 | set_general_thread (inferior_ptid); |
2820 | } | |
2821 | ||
c906108c | 2822 | \f |
7d1a114c PA |
2823 | /* Return nonzero if this is the main thread that we made up ourselves |
2824 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2825 | |
2826 | static int | |
f6ac5f3d | 2827 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2828 | { |
d7e15655 | 2829 | if (ptid == magic_null_ptid) |
c0a2216e PA |
2830 | /* The main thread is always alive. */ |
2831 | return 1; | |
2832 | ||
e38504b3 | 2833 | if (ptid.pid () != 0 && ptid.lwp () == 0) |
c0a2216e PA |
2834 | /* The main thread is always alive. This can happen after a |
2835 | vAttach, if the remote side doesn't support | |
2836 | multi-threading. */ | |
2837 | return 1; | |
2838 | ||
7d1a114c PA |
2839 | return 0; |
2840 | } | |
2841 | ||
2842 | /* Return nonzero if the thread PTID is still alive on the remote | |
2843 | system. */ | |
2844 | ||
57810aa7 | 2845 | bool |
f6ac5f3d | 2846 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
2847 | { |
2848 | struct remote_state *rs = get_remote_state (); | |
2849 | char *p, *endp; | |
2850 | ||
2851 | /* Check if this is a thread that we made up ourselves to model | |
2852 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2853 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2854 | return 1; |
2855 | ||
8d64371b TT |
2856 | p = rs->buf.data (); |
2857 | endp = p + get_remote_packet_size (); | |
82f73884 PA |
2858 | |
2859 | *p++ = 'T'; | |
2860 | write_ptid (p, endp, ptid); | |
2861 | ||
2e9f7625 | 2862 | putpkt (rs->buf); |
8d64371b | 2863 | getpkt (&rs->buf, 0); |
2e9f7625 | 2864 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2865 | } |
2866 | ||
79efa585 SM |
2867 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2868 | The thread_info object owns the memory for the name. */ | |
2869 | ||
f6ac5f3d PA |
2870 | const char * |
2871 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
2872 | { |
2873 | if (info->priv != NULL) | |
a9334058 SM |
2874 | { |
2875 | const std::string &name = get_remote_thread_info (info)->name; | |
2876 | return !name.empty () ? name.c_str () : NULL; | |
2877 | } | |
79efa585 SM |
2878 | |
2879 | return NULL; | |
2880 | } | |
2881 | ||
c906108c SS |
2882 | /* About these extended threadlist and threadinfo packets. They are |
2883 | variable length packets but, the fields within them are often fixed | |
30baf67b | 2884 | length. They are redundant enough to send over UDP as is the |
c906108c SS |
2885 | remote protocol in general. There is a matching unit test module |
2886 | in libstub. */ | |
2887 | ||
23860348 | 2888 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2889 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2890 | changable. */ |
cce74817 JM |
2891 | |
2892 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2893 | Plan to fix this. */ |
cce74817 | 2894 | |
23860348 | 2895 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2896 | |
9d1f7ab2 | 2897 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2898 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2899 | |
2900 | struct gdb_ext_thread_info | |
c5aa993b | 2901 | { |
23860348 | 2902 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2903 | int active; /* Has state interesting to GDB? |
23860348 | 2904 | regs, stack. */ |
2bc416ba | 2905 | char display[256]; /* Brief state display, name, |
cedea757 | 2906 | blocked/suspended. */ |
23860348 | 2907 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2908 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2909 | whatever. */ |
c5aa993b | 2910 | }; |
cce74817 JM |
2911 | |
2912 | /* The volume of remote transfers can be limited by submitting | |
2913 | a mask containing bits specifying the desired information. | |
2914 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2915 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2916 | |
2917 | #define TAG_THREADID 1 | |
2918 | #define TAG_EXISTS 2 | |
2919 | #define TAG_DISPLAY 4 | |
2920 | #define TAG_THREADNAME 8 | |
c5aa993b | 2921 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2922 | |
23860348 | 2923 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2924 | |
a14ed312 | 2925 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2926 | |
a14ed312 | 2927 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2928 | |
a14ed312 | 2929 | static char *pack_int (char *buf, int value); |
cce74817 | 2930 | |
a14ed312 | 2931 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2932 | |
a14ed312 | 2933 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2934 | |
23860348 | 2935 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2936 | |
23860348 | 2937 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2938 | |
23860348 | 2939 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2940 | |
23860348 | 2941 | static int threadref_to_int (threadref *ref); |
cce74817 | 2942 | |
23860348 | 2943 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2944 | |
23860348 | 2945 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2946 | |
2bc416ba | 2947 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2948 | threadref *id); |
cce74817 | 2949 | |
a14ed312 KB |
2950 | static char *pack_threadlist_request (char *pkt, int startflag, |
2951 | int threadcount, | |
23860348 | 2952 | threadref *nextthread); |
cce74817 | 2953 | |
23860348 | 2954 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2955 | |
82f73884 PA |
2956 | |
2957 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2958 | buffer we're allowed to write to. Returns | |
2959 | BUF+CHARACTERS_WRITTEN. */ | |
2960 | ||
6b8edb51 PA |
2961 | char * |
2962 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
2963 | { |
2964 | int pid, tid; | |
2965 | struct remote_state *rs = get_remote_state (); | |
2966 | ||
2967 | if (remote_multi_process_p (rs)) | |
2968 | { | |
e99b03dc | 2969 | pid = ptid.pid (); |
82f73884 PA |
2970 | if (pid < 0) |
2971 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2972 | else | |
2973 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2974 | } | |
e38504b3 | 2975 | tid = ptid.lwp (); |
82f73884 PA |
2976 | if (tid < 0) |
2977 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2978 | else | |
2979 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2980 | ||
2981 | return buf; | |
2982 | } | |
2983 | ||
256642e8 PA |
2984 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
2985 | last parsed char. Returns null_ptid if no thread id is found, and | |
2986 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
2987 | |
2988 | static ptid_t | |
256642e8 | 2989 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 2990 | { |
256642e8 PA |
2991 | const char *p = buf; |
2992 | const char *pp; | |
82f73884 | 2993 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
2994 | |
2995 | if (*p == 'p') | |
2996 | { | |
2997 | /* Multi-process ptid. */ | |
2998 | pp = unpack_varlen_hex (p + 1, &pid); | |
2999 | if (*pp != '.') | |
b37520b6 | 3000 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
3001 | |
3002 | p = pp; | |
3003 | pp = unpack_varlen_hex (p + 1, &tid); | |
3004 | if (obuf) | |
3005 | *obuf = pp; | |
fd79271b | 3006 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3007 | } |
3008 | ||
3009 | /* No multi-process. Just a tid. */ | |
3010 | pp = unpack_varlen_hex (p, &tid); | |
3011 | ||
c9f35b34 KB |
3012 | /* Return null_ptid when no thread id is found. */ |
3013 | if (p == pp) | |
3014 | { | |
3015 | if (obuf) | |
3016 | *obuf = pp; | |
3017 | return null_ptid; | |
3018 | } | |
3019 | ||
82f73884 | 3020 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
3021 | what's in inferior_ptid, unless it's null at this point. If so, |
3022 | then since there's no way to know the pid of the reported | |
3023 | threads, use the magic number. */ | |
d7e15655 | 3024 | if (inferior_ptid == null_ptid) |
e99b03dc | 3025 | pid = magic_null_ptid.pid (); |
ca19bf23 | 3026 | else |
e99b03dc | 3027 | pid = inferior_ptid.pid (); |
82f73884 PA |
3028 | |
3029 | if (obuf) | |
3030 | *obuf = pp; | |
fd79271b | 3031 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3032 | } |
3033 | ||
c906108c | 3034 | static int |
fba45db2 | 3035 | stubhex (int ch) |
c906108c SS |
3036 | { |
3037 | if (ch >= 'a' && ch <= 'f') | |
3038 | return ch - 'a' + 10; | |
3039 | if (ch >= '0' && ch <= '9') | |
3040 | return ch - '0'; | |
3041 | if (ch >= 'A' && ch <= 'F') | |
3042 | return ch - 'A' + 10; | |
3043 | return -1; | |
3044 | } | |
3045 | ||
3046 | static int | |
fba45db2 | 3047 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
3048 | { |
3049 | int nibble; | |
3050 | int retval = 0; | |
3051 | ||
3052 | while (fieldlength) | |
3053 | { | |
3054 | nibble = stubhex (*buff++); | |
3055 | retval |= nibble; | |
3056 | fieldlength--; | |
3057 | if (fieldlength) | |
3058 | retval = retval << 4; | |
3059 | } | |
3060 | return retval; | |
3061 | } | |
3062 | ||
c906108c | 3063 | static char * |
fba45db2 | 3064 | unpack_nibble (char *buf, int *val) |
c906108c | 3065 | { |
b7589f7d | 3066 | *val = fromhex (*buf++); |
c906108c SS |
3067 | return buf; |
3068 | } | |
3069 | ||
c906108c | 3070 | static char * |
fba45db2 | 3071 | unpack_byte (char *buf, int *value) |
c906108c SS |
3072 | { |
3073 | *value = stub_unpack_int (buf, 2); | |
3074 | return buf + 2; | |
3075 | } | |
3076 | ||
3077 | static char * | |
fba45db2 | 3078 | pack_int (char *buf, int value) |
c906108c SS |
3079 | { |
3080 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3081 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3082 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3083 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3084 | return buf; | |
3085 | } | |
3086 | ||
3087 | static char * | |
fba45db2 | 3088 | unpack_int (char *buf, int *value) |
c906108c SS |
3089 | { |
3090 | *value = stub_unpack_int (buf, 8); | |
3091 | return buf + 8; | |
3092 | } | |
3093 | ||
23860348 | 3094 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3095 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3096 | |
3097 | static char * | |
fba45db2 | 3098 | pack_string (char *pkt, char *string) |
c906108c SS |
3099 | { |
3100 | char ch; | |
3101 | int len; | |
3102 | ||
3103 | len = strlen (string); | |
3104 | if (len > 200) | |
23860348 | 3105 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3106 | pkt = pack_hex_byte (pkt, len); |
3107 | while (len-- > 0) | |
3108 | { | |
3109 | ch = *string++; | |
3110 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3111 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3112 | *pkt++ = ch; |
3113 | } | |
3114 | return pkt; | |
3115 | } | |
3116 | #endif /* 0 (unused) */ | |
3117 | ||
3118 | static char * | |
fba45db2 | 3119 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
3120 | { |
3121 | while (length--) | |
3122 | *dest++ = *src++; | |
3123 | *dest = '\0'; | |
3124 | return src; | |
3125 | } | |
3126 | ||
3127 | static char * | |
fba45db2 | 3128 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3129 | { |
3130 | char *limit; | |
3131 | unsigned char *altid; | |
3132 | ||
3133 | altid = (unsigned char *) id; | |
3134 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3135 | while (pkt < limit) | |
3136 | pkt = pack_hex_byte (pkt, *altid++); | |
3137 | return pkt; | |
3138 | } | |
3139 | ||
3140 | ||
3141 | static char * | |
fba45db2 | 3142 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
3143 | { |
3144 | char *altref; | |
3145 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
3146 | int x, y; | |
3147 | ||
3148 | altref = (char *) id; | |
3149 | ||
3150 | while (inbuf < limit) | |
3151 | { | |
3152 | x = stubhex (*inbuf++); | |
3153 | y = stubhex (*inbuf++); | |
3154 | *altref++ = (x << 4) | y; | |
3155 | } | |
3156 | return inbuf; | |
3157 | } | |
3158 | ||
3159 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3160 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3161 | to use 64bit thread references internally. This is an adapter |
3162 | function. */ | |
3163 | ||
3164 | void | |
fba45db2 | 3165 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3166 | { |
3167 | unsigned char *scan; | |
3168 | ||
3169 | scan = (unsigned char *) id; | |
3170 | { | |
3171 | int i = 4; | |
3172 | while (i--) | |
3173 | *scan++ = 0; | |
3174 | } | |
3175 | *scan++ = (value >> 24) & 0xff; | |
3176 | *scan++ = (value >> 16) & 0xff; | |
3177 | *scan++ = (value >> 8) & 0xff; | |
3178 | *scan++ = (value & 0xff); | |
3179 | } | |
3180 | ||
3181 | static int | |
fba45db2 | 3182 | threadref_to_int (threadref *ref) |
c906108c SS |
3183 | { |
3184 | int i, value = 0; | |
3185 | unsigned char *scan; | |
3186 | ||
cfd77fa1 | 3187 | scan = *ref; |
c906108c SS |
3188 | scan += 4; |
3189 | i = 4; | |
3190 | while (i-- > 0) | |
3191 | value = (value << 8) | ((*scan++) & 0xff); | |
3192 | return value; | |
3193 | } | |
3194 | ||
3195 | static void | |
fba45db2 | 3196 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3197 | { |
3198 | int i; | |
3199 | unsigned char *csrc, *cdest; | |
3200 | ||
3201 | csrc = (unsigned char *) src; | |
3202 | cdest = (unsigned char *) dest; | |
3203 | i = 8; | |
3204 | while (i--) | |
3205 | *cdest++ = *csrc++; | |
3206 | } | |
3207 | ||
3208 | static int | |
fba45db2 | 3209 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3210 | { |
23860348 | 3211 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3212 | #if 0 |
3213 | unsigned char *srcp, *destp; | |
3214 | int i, result; | |
3215 | srcp = (char *) src; | |
3216 | destp = (char *) dest; | |
3217 | ||
3218 | result = 1; | |
3219 | while (i-- > 0) | |
3220 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3221 | return result; | |
3222 | #endif | |
3223 | return 1; | |
3224 | } | |
3225 | ||
3226 | /* | |
c5aa993b JM |
3227 | threadid:1, # always request threadid |
3228 | context_exists:2, | |
3229 | display:4, | |
3230 | unique_name:8, | |
3231 | more_display:16 | |
3232 | */ | |
c906108c SS |
3233 | |
3234 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3235 | ||
3236 | static char * | |
fba45db2 | 3237 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3238 | { |
23860348 MS |
3239 | *pkt++ = 'q'; /* Info Query */ |
3240 | *pkt++ = 'P'; /* process or thread info */ | |
3241 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3242 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3243 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3244 | return pkt; |
3245 | } | |
3246 | ||
23860348 | 3247 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3248 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3249 | add more fields as time goes by. */ |
c906108c | 3250 | |
23860348 | 3251 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3252 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3253 | fetch registers and its stack? */ |
c5aa993b | 3254 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3255 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3256 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3257 | the process. */ |
c906108c | 3258 | |
6b8edb51 PA |
3259 | int |
3260 | remote_target::remote_unpack_thread_info_response (char *pkt, | |
3261 | threadref *expectedref, | |
3262 | gdb_ext_thread_info *info) | |
c906108c | 3263 | { |
d01949b6 | 3264 | struct remote_state *rs = get_remote_state (); |
c906108c | 3265 | int mask, length; |
cfd77fa1 | 3266 | int tag; |
c906108c | 3267 | threadref ref; |
8d64371b | 3268 | char *limit = pkt + rs->buf.size (); /* Plausible parsing limit. */ |
c906108c SS |
3269 | int retval = 1; |
3270 | ||
23860348 | 3271 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3272 | info->active = 0; |
3273 | info->display[0] = '\0'; | |
3274 | info->shortname[0] = '\0'; | |
3275 | info->more_display[0] = '\0'; | |
3276 | ||
23860348 MS |
3277 | /* Assume the characters indicating the packet type have been |
3278 | stripped. */ | |
c906108c SS |
3279 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3280 | pkt = unpack_threadid (pkt, &ref); | |
3281 | ||
3282 | if (mask == 0) | |
8a3fe4f8 | 3283 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3284 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3285 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3286 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3287 | return 0; |
3288 | } | |
3289 | copy_threadref (&info->threadid, &ref); | |
3290 | ||
405feb71 | 3291 | /* Loop on tagged fields , try to bail if something goes wrong. */ |
c906108c | 3292 | |
23860348 MS |
3293 | /* Packets are terminated with nulls. */ |
3294 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3295 | { |
3296 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3297 | pkt = unpack_byte (pkt, &length); /* length */ |
3298 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3299 | { |
8a3fe4f8 | 3300 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3301 | retval = 0; |
3302 | break; | |
3303 | } | |
3304 | if (tag == TAG_THREADID) | |
3305 | { | |
3306 | if (length != 16) | |
3307 | { | |
8a3fe4f8 | 3308 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3309 | retval = 0; |
3310 | break; | |
3311 | } | |
3312 | pkt = unpack_threadid (pkt, &ref); | |
3313 | mask = mask & ~TAG_THREADID; | |
3314 | continue; | |
3315 | } | |
3316 | if (tag == TAG_EXISTS) | |
3317 | { | |
3318 | info->active = stub_unpack_int (pkt, length); | |
3319 | pkt += length; | |
3320 | mask = mask & ~(TAG_EXISTS); | |
3321 | if (length > 8) | |
3322 | { | |
8a3fe4f8 | 3323 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3324 | retval = 0; |
3325 | break; | |
3326 | } | |
3327 | continue; | |
3328 | } | |
3329 | if (tag == TAG_THREADNAME) | |
3330 | { | |
3331 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3332 | mask = mask & ~TAG_THREADNAME; | |
3333 | continue; | |
3334 | } | |
3335 | if (tag == TAG_DISPLAY) | |
3336 | { | |
3337 | pkt = unpack_string (pkt, &info->display[0], length); | |
3338 | mask = mask & ~TAG_DISPLAY; | |
3339 | continue; | |
3340 | } | |
3341 | if (tag == TAG_MOREDISPLAY) | |
3342 | { | |
3343 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3344 | mask = mask & ~TAG_MOREDISPLAY; | |
3345 | continue; | |
3346 | } | |
8a3fe4f8 | 3347 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3348 | break; /* Not a tag we know about. */ |
c906108c SS |
3349 | } |
3350 | return retval; | |
3351 | } | |
3352 | ||
6b8edb51 PA |
3353 | int |
3354 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3355 | int fieldset, | |
3356 | gdb_ext_thread_info *info) | |
c906108c | 3357 | { |
d01949b6 | 3358 | struct remote_state *rs = get_remote_state (); |
c906108c | 3359 | int result; |
c906108c | 3360 | |
8d64371b | 3361 | pack_threadinfo_request (rs->buf.data (), fieldset, threadid); |
2e9f7625 | 3362 | putpkt (rs->buf); |
8d64371b | 3363 | getpkt (&rs->buf, 0); |
3084dd77 PA |
3364 | |
3365 | if (rs->buf[0] == '\0') | |
3366 | return 0; | |
3367 | ||
8d64371b | 3368 | result = remote_unpack_thread_info_response (&rs->buf[2], |
23860348 | 3369 | threadid, info); |
c906108c SS |
3370 | return result; |
3371 | } | |
3372 | ||
c906108c SS |
3373 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3374 | ||
3375 | static char * | |
fba45db2 KB |
3376 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3377 | threadref *nextthread) | |
c906108c SS |
3378 | { |
3379 | *pkt++ = 'q'; /* info query packet */ | |
3380 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3381 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3382 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3383 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3384 | *pkt = '\0'; | |
3385 | return pkt; | |
3386 | } | |
3387 | ||
3388 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3389 | ||
6b8edb51 PA |
3390 | int |
3391 | remote_target::parse_threadlist_response (char *pkt, int result_limit, | |
3392 | threadref *original_echo, | |
3393 | threadref *resultlist, | |
3394 | int *doneflag) | |
c906108c | 3395 | { |
d01949b6 | 3396 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3397 | char *limit; |
3398 | int count, resultcount, done; | |
3399 | ||
3400 | resultcount = 0; | |
3401 | /* Assume the 'q' and 'M chars have been stripped. */ | |
8d64371b | 3402 | limit = pkt + (rs->buf.size () - BUF_THREAD_ID_SIZE); |
23860348 | 3403 | /* done parse past here */ |
c906108c SS |
3404 | pkt = unpack_byte (pkt, &count); /* count field */ |
3405 | pkt = unpack_nibble (pkt, &done); | |
3406 | /* The first threadid is the argument threadid. */ | |
3407 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3408 | while ((count-- > 0) && (pkt < limit)) | |
3409 | { | |
3410 | pkt = unpack_threadid (pkt, resultlist++); | |
3411 | if (resultcount++ >= result_limit) | |
3412 | break; | |
3413 | } | |
3414 | if (doneflag) | |
3415 | *doneflag = done; | |
3416 | return resultcount; | |
3417 | } | |
3418 | ||
6dc54d91 PA |
3419 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3420 | qL packet is not supported, 0 on error and 1 on success. */ | |
3421 | ||
6b8edb51 PA |
3422 | int |
3423 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3424 | int result_limit, int *done, int *result_count, | |
3425 | threadref *threadlist) | |
c906108c | 3426 | { |
d01949b6 | 3427 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3428 | int result = 1; |
3429 | ||
405feb71 | 3430 | /* Truncate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3431 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3432 | >= get_remote_packet_size ()) | |
ea9c271d | 3433 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3434 | |
8d64371b TT |
3435 | pack_threadlist_request (rs->buf.data (), startflag, result_limit, |
3436 | nextthread); | |
6d820c5c | 3437 | putpkt (rs->buf); |
8d64371b TT |
3438 | getpkt (&rs->buf, 0); |
3439 | if (rs->buf[0] == '\0') | |
6dc54d91 PA |
3440 | { |
3441 | /* Packet not supported. */ | |
3442 | return -1; | |
3443 | } | |
3444 | ||
3445 | *result_count = | |
8d64371b | 3446 | parse_threadlist_response (&rs->buf[2], result_limit, |
6dc54d91 | 3447 | &rs->echo_nextthread, threadlist, done); |
c906108c | 3448 | |
0d031856 | 3449 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3450 | { |
23860348 | 3451 | /* FIXME: This is a good reason to drop the packet. */ |
405feb71 TV |
3452 | /* Possibly, there is a duplicate response. */ |
3453 | /* Possibilities : | |
c906108c SS |
3454 | retransmit immediatly - race conditions |
3455 | retransmit after timeout - yes | |
3456 | exit | |
3457 | wait for packet, then exit | |
3458 | */ | |
8a3fe4f8 | 3459 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3460 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3461 | } |
3462 | if (*result_count <= 0) | |
3463 | { | |
3464 | if (*done != 1) | |
3465 | { | |
8a3fe4f8 | 3466 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3467 | result = 0; |
3468 | } | |
3469 | return result; /* break; */ | |
3470 | } | |
3471 | if (*result_count > result_limit) | |
3472 | { | |
3473 | *result_count = 0; | |
8a3fe4f8 | 3474 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3475 | return 0; |
3476 | } | |
3477 | return result; | |
3478 | } | |
3479 | ||
6dc54d91 PA |
3480 | /* Fetch the list of remote threads, with the qL packet, and call |
3481 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3482 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3483 | STEPFUNCTION returns false. If the packet is not supported, | |
3484 | returns -1. */ | |
c906108c | 3485 | |
6b8edb51 PA |
3486 | int |
3487 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3488 | void *context, int looplimit) | |
c906108c | 3489 | { |
0d031856 | 3490 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3491 | int done, i, result_count; |
3492 | int startflag = 1; | |
3493 | int result = 1; | |
3494 | int loopcount = 0; | |
c906108c SS |
3495 | |
3496 | done = 0; | |
3497 | while (!done) | |
3498 | { | |
3499 | if (loopcount++ > looplimit) | |
3500 | { | |
3501 | result = 0; | |
8a3fe4f8 | 3502 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3503 | break; |
3504 | } | |
6dc54d91 PA |
3505 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3506 | MAXTHREADLISTRESULTS, | |
3507 | &done, &result_count, | |
3508 | rs->resultthreadlist); | |
3509 | if (result <= 0) | |
3510 | break; | |
23860348 | 3511 | /* Clear for later iterations. */ |
c906108c SS |
3512 | startflag = 0; |
3513 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3514 | if (result_count >= 1) | |
0d031856 TT |
3515 | copy_threadref (&rs->nextthread, |
3516 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3517 | i = 0; |
3518 | while (result_count--) | |
6dc54d91 PA |
3519 | { |
3520 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3521 | { | |
3522 | result = 0; | |
3523 | break; | |
3524 | } | |
3525 | } | |
c906108c SS |
3526 | } |
3527 | return result; | |
3528 | } | |
3529 | ||
6dc54d91 PA |
3530 | /* A thread found on the remote target. */ |
3531 | ||
21fe1c75 | 3532 | struct thread_item |
6dc54d91 | 3533 | { |
21fe1c75 SM |
3534 | explicit thread_item (ptid_t ptid_) |
3535 | : ptid (ptid_) | |
3536 | {} | |
3537 | ||
3538 | thread_item (thread_item &&other) = default; | |
3539 | thread_item &operator= (thread_item &&other) = default; | |
3540 | ||
3541 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3542 | ||
6dc54d91 PA |
3543 | /* The thread's PTID. */ |
3544 | ptid_t ptid; | |
3545 | ||
21fe1c75 SM |
3546 | /* The thread's extra info. */ |
3547 | std::string extra; | |
6dc54d91 | 3548 | |
21fe1c75 SM |
3549 | /* The thread's name. */ |
3550 | std::string name; | |
79efa585 | 3551 | |
6dc54d91 | 3552 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3553 | int core = -1; |
f6327dcb KB |
3554 | |
3555 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3556 | gdb::byte_vector thread_handle; |
21fe1c75 | 3557 | }; |
6dc54d91 PA |
3558 | |
3559 | /* Context passed around to the various methods listing remote | |
3560 | threads. As new threads are found, they're added to the ITEMS | |
3561 | vector. */ | |
3562 | ||
3563 | struct threads_listing_context | |
3564 | { | |
21fe1c75 SM |
3565 | /* Return true if this object contains an entry for a thread with ptid |
3566 | PTID. */ | |
6dc54d91 | 3567 | |
21fe1c75 SM |
3568 | bool contains_thread (ptid_t ptid) const |
3569 | { | |
3570 | auto match_ptid = [&] (const thread_item &item) | |
3571 | { | |
3572 | return item.ptid == ptid; | |
3573 | }; | |
80134cf5 | 3574 | |
21fe1c75 SM |
3575 | auto it = std::find_if (this->items.begin (), |
3576 | this->items.end (), | |
3577 | match_ptid); | |
80134cf5 | 3578 | |
21fe1c75 SM |
3579 | return it != this->items.end (); |
3580 | } | |
80134cf5 | 3581 | |
21fe1c75 | 3582 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3583 | |
21fe1c75 SM |
3584 | void remove_thread (ptid_t ptid) |
3585 | { | |
3586 | auto match_ptid = [&] (const thread_item &item) | |
3587 | { | |
3588 | return item.ptid == ptid; | |
3589 | }; | |
cbb8991c | 3590 | |
21fe1c75 SM |
3591 | auto it = std::remove_if (this->items.begin (), |
3592 | this->items.end (), | |
3593 | match_ptid); | |
cbb8991c | 3594 | |
21fe1c75 SM |
3595 | if (it != this->items.end ()) |
3596 | this->items.erase (it); | |
3597 | } | |
3598 | ||
3599 | /* The threads found on the remote target. */ | |
3600 | std::vector<thread_item> items; | |
3601 | }; | |
cbb8991c | 3602 | |
c906108c | 3603 | static int |
6dc54d91 | 3604 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3605 | { |
19ba03f4 SM |
3606 | struct threads_listing_context *context |
3607 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3608 | int pid = inferior_ptid.pid (); |
3609 | int lwp = threadref_to_int (ref); | |
3610 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3611 | |
21fe1c75 | 3612 | context->items.emplace_back (ptid); |
6dc54d91 | 3613 | |
c906108c SS |
3614 | return 1; /* continue iterator */ |
3615 | } | |
3616 | ||
3617 | #define CRAZY_MAX_THREADS 1000 | |
3618 | ||
6b8edb51 PA |
3619 | ptid_t |
3620 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3621 | { |
d01949b6 | 3622 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3623 | |
3624 | putpkt ("qC"); | |
8d64371b | 3625 | getpkt (&rs->buf, 0); |
2e9f7625 | 3626 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3627 | { |
256642e8 | 3628 | const char *obuf; |
c9f35b34 KB |
3629 | ptid_t result; |
3630 | ||
3631 | result = read_ptid (&rs->buf[2], &obuf); | |
3632 | if (*obuf != '\0' && remote_debug) | |
3633 | fprintf_unfiltered (gdb_stdlog, | |
3634 | "warning: garbage in qC reply\n"); | |
3635 | ||
3636 | return result; | |
3637 | } | |
c906108c SS |
3638 | else |
3639 | return oldpid; | |
3640 | } | |
3641 | ||
6dc54d91 | 3642 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3643 | |
6b8edb51 PA |
3644 | int |
3645 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3646 | { |
6dc54d91 PA |
3647 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3648 | CRAZY_MAX_THREADS) >= 0) | |
3649 | return 1; | |
3650 | ||
3651 | return 0; | |
c906108c SS |
3652 | } |
3653 | ||
dc146f7c VP |
3654 | #if defined(HAVE_LIBEXPAT) |
3655 | ||
dc146f7c VP |
3656 | static void |
3657 | start_thread (struct gdb_xml_parser *parser, | |
3658 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3659 | void *user_data, |
3660 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3661 | { |
19ba03f4 SM |
3662 | struct threads_listing_context *data |
3663 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3664 | struct gdb_xml_value *attr; |
dc146f7c | 3665 | |
4d0fdd9b | 3666 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3667 | ptid_t ptid = read_ptid (id, NULL); |
3668 | ||
3669 | data->items.emplace_back (ptid); | |
3670 | thread_item &item = data->items.back (); | |
dc146f7c | 3671 | |
3d2c1d41 PA |
3672 | attr = xml_find_attribute (attributes, "core"); |
3673 | if (attr != NULL) | |
4d0fdd9b | 3674 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3675 | |
79efa585 | 3676 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3677 | if (attr != NULL) |
4d0fdd9b | 3678 | item.name = (const char *) attr->value.get (); |
79efa585 | 3679 | |
f6327dcb KB |
3680 | attr = xml_find_attribute (attributes, "handle"); |
3681 | if (attr != NULL) | |
4d0fdd9b | 3682 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3683 | } |
3684 | ||
3685 | static void | |
3686 | end_thread (struct gdb_xml_parser *parser, | |
3687 | const struct gdb_xml_element *element, | |
3688 | void *user_data, const char *body_text) | |
3689 | { | |
19ba03f4 SM |
3690 | struct threads_listing_context *data |
3691 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3692 | |
21fe1c75 SM |
3693 | if (body_text != NULL && *body_text != '\0') |
3694 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3695 | } |
3696 | ||
3697 | const struct gdb_xml_attribute thread_attributes[] = { | |
3698 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3699 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3700 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3701 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3702 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3703 | }; | |
3704 | ||
3705 | const struct gdb_xml_element thread_children[] = { | |
3706 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3707 | }; | |
3708 | ||
3709 | const struct gdb_xml_element threads_children[] = { | |
3710 | { "thread", thread_attributes, thread_children, | |
3711 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3712 | start_thread, end_thread }, | |
3713 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3714 | }; | |
3715 | ||
3716 | const struct gdb_xml_element threads_elements[] = { | |
3717 | { "threads", NULL, threads_children, | |
3718 | GDB_XML_EF_NONE, NULL, NULL }, | |
3719 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3720 | }; | |
3721 | ||
3722 | #endif | |
3723 | ||
6dc54d91 | 3724 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3725 | |
6b8edb51 PA |
3726 | int |
3727 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 3728 | { |
dc146f7c | 3729 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3730 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3731 | { |
9018be22 | 3732 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 3733 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3734 | |
9018be22 | 3735 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3736 | { |
6dc54d91 | 3737 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3738 | threads_elements, xml->data (), context); |
dc146f7c VP |
3739 | } |
3740 | ||
6dc54d91 | 3741 | return 1; |
dc146f7c VP |
3742 | } |
3743 | #endif | |
3744 | ||
6dc54d91 PA |
3745 | return 0; |
3746 | } | |
3747 | ||
3748 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3749 | ||
6b8edb51 PA |
3750 | int |
3751 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
3752 | { |
3753 | struct remote_state *rs = get_remote_state (); | |
3754 | ||
b80fafe3 | 3755 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3756 | { |
256642e8 | 3757 | const char *bufp; |
6dc54d91 | 3758 | |
9d1f7ab2 | 3759 | putpkt ("qfThreadInfo"); |
8d64371b TT |
3760 | getpkt (&rs->buf, 0); |
3761 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3762 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3763 | { |
9d1f7ab2 MS |
3764 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3765 | { | |
3766 | do | |
3767 | { | |
21fe1c75 SM |
3768 | ptid_t ptid = read_ptid (bufp, &bufp); |
3769 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3770 | } |
3771 | while (*bufp++ == ','); /* comma-separated list */ | |
3772 | putpkt ("qsThreadInfo"); | |
8d64371b TT |
3773 | getpkt (&rs->buf, 0); |
3774 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3775 | } |
6dc54d91 PA |
3776 | return 1; |
3777 | } | |
3778 | else | |
3779 | { | |
3780 | /* Packet not recognized. */ | |
3781 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3782 | } |
3783 | } | |
3784 | ||
6dc54d91 PA |
3785 | return 0; |
3786 | } | |
3787 | ||
e8032dde | 3788 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3789 | targets. */ |
3790 | ||
f6ac5f3d PA |
3791 | void |
3792 | remote_target::update_thread_list () | |
6dc54d91 | 3793 | { |
6dc54d91 | 3794 | struct threads_listing_context context; |
ab970af1 | 3795 | int got_list = 0; |
e8032dde | 3796 | |
6dc54d91 PA |
3797 | /* We have a few different mechanisms to fetch the thread list. Try |
3798 | them all, starting with the most preferred one first, falling | |
3799 | back to older methods. */ | |
6b8edb51 PA |
3800 | if (remote_get_threads_with_qxfer (&context) |
3801 | || remote_get_threads_with_qthreadinfo (&context) | |
3802 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 3803 | { |
ab970af1 PA |
3804 | got_list = 1; |
3805 | ||
21fe1c75 | 3806 | if (context.items.empty () |
f6ac5f3d | 3807 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3808 | { |
3809 | /* Some targets don't really support threads, but still | |
3810 | reply an (empty) thread list in response to the thread | |
3811 | listing packets, instead of replying "packet not | |
3812 | supported". Exit early so we don't delete the main | |
3813 | thread. */ | |
7d1a114c PA |
3814 | return; |
3815 | } | |
3816 | ||
ab970af1 PA |
3817 | /* CONTEXT now holds the current thread list on the remote |
3818 | target end. Delete GDB-side threads no longer found on the | |
3819 | target. */ | |
08036331 | 3820 | for (thread_info *tp : all_threads_safe ()) |
cbb8991c | 3821 | { |
5b6d1e4f PA |
3822 | if (tp->inf->process_target () != this) |
3823 | continue; | |
3824 | ||
21fe1c75 | 3825 | if (!context.contains_thread (tp->ptid)) |
ab970af1 PA |
3826 | { |
3827 | /* Not found. */ | |
00431a78 | 3828 | delete_thread (tp); |
ab970af1 | 3829 | } |
cbb8991c DB |
3830 | } |
3831 | ||
3832 | /* Remove any unreported fork child threads from CONTEXT so | |
3833 | that we don't interfere with follow fork, which is where | |
3834 | creation of such threads is handled. */ | |
3835 | remove_new_fork_children (&context); | |
74531fed | 3836 | |
ab970af1 | 3837 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3838 | for (thread_item &item : context.items) |
6dc54d91 | 3839 | { |
21fe1c75 | 3840 | if (item.ptid != null_ptid) |
6dc54d91 | 3841 | { |
6dc54d91 | 3842 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3843 | executing until proven otherwise with a stop reply. |
3844 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3845 | stopped. */ |
0d5b594f | 3846 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3847 | |
21fe1c75 | 3848 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3849 | |
5b6d1e4f | 3850 | thread_info *tp = find_thread_ptid (this, item.ptid); |
00431a78 | 3851 | remote_thread_info *info = get_remote_thread_info (tp); |
21fe1c75 | 3852 | info->core = item.core; |
7aabaf9d SM |
3853 | info->extra = std::move (item.extra); |
3854 | info->name = std::move (item.name); | |
3855 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3856 | } |
3857 | } | |
3858 | } | |
3859 | ||
ab970af1 PA |
3860 | if (!got_list) |
3861 | { | |
3862 | /* If no thread listing method is supported, then query whether | |
3863 | each known thread is alive, one by one, with the T packet. | |
3864 | If the target doesn't support threads at all, then this is a | |
3865 | no-op. See remote_thread_alive. */ | |
3866 | prune_threads (); | |
3867 | } | |
9d1f7ab2 MS |
3868 | } |
3869 | ||
802188a7 | 3870 | /* |
9d1f7ab2 MS |
3871 | * Collect a descriptive string about the given thread. |
3872 | * The target may say anything it wants to about the thread | |
3873 | * (typically info about its blocked / runnable state, name, etc.). | |
3874 | * This string will appear in the info threads display. | |
802188a7 | 3875 | * |
9d1f7ab2 MS |
3876 | * Optional: targets are not required to implement this function. |
3877 | */ | |
3878 | ||
f6ac5f3d PA |
3879 | const char * |
3880 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 3881 | { |
d01949b6 | 3882 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3883 | int set; |
3884 | threadref id; | |
3885 | struct gdb_ext_thread_info threadinfo; | |
9d1f7ab2 | 3886 | |
5d93a237 | 3887 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3888 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3889 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3890 | |
d7e15655 | 3891 | if (tp->ptid == magic_null_ptid |
e38504b3 | 3892 | || (tp->ptid.pid () != 0 && tp->ptid.lwp () == 0)) |
60e569b9 PA |
3893 | /* This is the main thread which was added by GDB. The remote |
3894 | server doesn't know about it. */ | |
3895 | return NULL; | |
3896 | ||
c76a8ea3 PA |
3897 | std::string &extra = get_remote_thread_info (tp)->extra; |
3898 | ||
3899 | /* If already have cached info, use it. */ | |
3900 | if (!extra.empty ()) | |
3901 | return extra.c_str (); | |
3902 | ||
4082afcc | 3903 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3904 | { |
c76a8ea3 PA |
3905 | /* If we're using qXfer:threads:read, then the extra info is |
3906 | included in the XML. So if we didn't have anything cached, | |
3907 | it's because there's really no extra info. */ | |
3908 | return NULL; | |
dc146f7c VP |
3909 | } |
3910 | ||
b80fafe3 | 3911 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3912 | { |
8d64371b TT |
3913 | char *b = rs->buf.data (); |
3914 | char *endb = b + get_remote_packet_size (); | |
82f73884 PA |
3915 | |
3916 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3917 | b += strlen (b); | |
3918 | write_ptid (b, endb, tp->ptid); | |
3919 | ||
2e9f7625 | 3920 | putpkt (rs->buf); |
8d64371b | 3921 | getpkt (&rs->buf, 0); |
2e9f7625 | 3922 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3923 | { |
8d64371b TT |
3924 | extra.resize (strlen (rs->buf.data ()) / 2); |
3925 | hex2bin (rs->buf.data (), (gdb_byte *) &extra[0], extra.size ()); | |
c76a8ea3 | 3926 | return extra.c_str (); |
9d1f7ab2 | 3927 | } |
0f71a2f6 | 3928 | } |
9d1f7ab2 MS |
3929 | |
3930 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3931 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3932 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3933 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
e38504b3 | 3934 | int_to_threadref (&id, tp->ptid.lwp ()); |
9d1f7ab2 MS |
3935 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3936 | if (threadinfo.active) | |
0f71a2f6 | 3937 | { |
9d1f7ab2 | 3938 | if (*threadinfo.shortname) |
c76a8ea3 | 3939 | string_appendf (extra, " Name: %s", threadinfo.shortname); |
9d1f7ab2 | 3940 | if (*threadinfo.display) |
c76a8ea3 PA |
3941 | { |
3942 | if (!extra.empty ()) | |
3943 | extra += ','; | |
3944 | string_appendf (extra, " State: %s", threadinfo.display); | |
3945 | } | |
9d1f7ab2 | 3946 | if (*threadinfo.more_display) |
c5aa993b | 3947 | { |
c76a8ea3 PA |
3948 | if (!extra.empty ()) |
3949 | extra += ','; | |
3950 | string_appendf (extra, " Priority: %s", threadinfo.more_display); | |
c5aa993b | 3951 | } |
c76a8ea3 | 3952 | return extra.c_str (); |
0f71a2f6 | 3953 | } |
9d1f7ab2 | 3954 | return NULL; |
0f71a2f6 | 3955 | } |
c906108c | 3956 | \f |
c5aa993b | 3957 | |
f6ac5f3d PA |
3958 | bool |
3959 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
3960 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
3961 | { |
3962 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 3963 | char *p = rs->buf.data (); |
0fb4aa4b | 3964 | |
bba74b36 | 3965 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3966 | p += strlen (p); |
3967 | p += hexnumstr (p, addr); | |
3968 | putpkt (rs->buf); | |
8d64371b TT |
3969 | getpkt (&rs->buf, 0); |
3970 | p = rs->buf.data (); | |
0fb4aa4b PA |
3971 | |
3972 | if (*p == 'E') | |
3973 | error (_("Remote failure reply: %s"), p); | |
3974 | ||
3975 | if (*p++ == 'm') | |
3976 | { | |
256642e8 | 3977 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 3978 | return true; |
0fb4aa4b PA |
3979 | } |
3980 | ||
5d9310c4 | 3981 | return false; |
0fb4aa4b PA |
3982 | } |
3983 | ||
f6ac5f3d PA |
3984 | std::vector<static_tracepoint_marker> |
3985 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
3986 | { |
3987 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 3988 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 3989 | const char *p; |
5d9310c4 | 3990 | static_tracepoint_marker marker; |
0fb4aa4b PA |
3991 | |
3992 | /* Ask for a first packet of static tracepoint marker | |
3993 | definition. */ | |
3994 | putpkt ("qTfSTM"); | |
8d64371b TT |
3995 | getpkt (&rs->buf, 0); |
3996 | p = rs->buf.data (); | |
0fb4aa4b PA |
3997 | if (*p == 'E') |
3998 | error (_("Remote failure reply: %s"), p); | |
3999 | ||
0fb4aa4b PA |
4000 | while (*p++ == 'm') |
4001 | { | |
0fb4aa4b PA |
4002 | do |
4003 | { | |
5d9310c4 | 4004 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 4005 | |
5d9310c4 SM |
4006 | if (strid == NULL || marker.str_id == strid) |
4007 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
4008 | } |
4009 | while (*p++ == ','); /* comma-separated list */ | |
4010 | /* Ask for another packet of static tracepoint definition. */ | |
4011 | putpkt ("qTsSTM"); | |
8d64371b TT |
4012 | getpkt (&rs->buf, 0); |
4013 | p = rs->buf.data (); | |
0fb4aa4b PA |
4014 | } |
4015 | ||
0fb4aa4b PA |
4016 | return markers; |
4017 | } | |
4018 | ||
4019 | \f | |
10760264 JB |
4020 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
4021 | ||
f6ac5f3d PA |
4022 | ptid_t |
4023 | remote_target::get_ada_task_ptid (long lwp, long thread) | |
10760264 | 4024 | { |
e99b03dc | 4025 | return ptid_t (inferior_ptid.pid (), lwp, 0); |
10760264 JB |
4026 | } |
4027 | \f | |
4028 | ||
24b06219 | 4029 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 4030 | |
6b8edb51 PA |
4031 | void |
4032 | remote_target::extended_remote_restart () | |
c906108c | 4033 | { |
d01949b6 | 4034 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4035 | |
4036 | /* Send the restart command; for reasons I don't understand the | |
4037 | remote side really expects a number after the "R". */ | |
8d64371b | 4038 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "R%x", 0); |
6d820c5c | 4039 | putpkt (rs->buf); |
c906108c | 4040 | |
ad9a8f3f | 4041 | remote_fileio_reset (); |
c906108c SS |
4042 | } |
4043 | \f | |
4044 | /* Clean up connection to a remote debugger. */ | |
4045 | ||
f6ac5f3d PA |
4046 | void |
4047 | remote_target::close () | |
c906108c | 4048 | { |
048094ac | 4049 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4050 | terminal_ours (); |
ce5ce7ed | 4051 | |
6b8edb51 PA |
4052 | trace_reset_local_state (); |
4053 | ||
4054 | delete this; | |
4055 | } | |
4056 | ||
4057 | remote_target::~remote_target () | |
4058 | { | |
4059 | struct remote_state *rs = get_remote_state (); | |
4060 | ||
4061 | /* Check for NULL because we may get here with a partially | |
4062 | constructed target/connection. */ | |
4063 | if (rs->remote_desc == nullptr) | |
4064 | return; | |
4065 | ||
4066 | serial_close (rs->remote_desc); | |
4067 | ||
4068 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4069 | everything of this target. */ |
6b8edb51 | 4070 | discard_pending_stop_replies_in_queue (); |
74531fed | 4071 | |
6b8edb51 PA |
4072 | if (rs->remote_async_inferior_event_token) |
4073 | delete_async_event_handler (&rs->remote_async_inferior_event_token); | |
722247f1 | 4074 | |
97dfbadd | 4075 | delete rs->notif_state; |
c906108c SS |
4076 | } |
4077 | ||
23860348 | 4078 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4079 | |
6b8edb51 PA |
4080 | void |
4081 | remote_target::get_offsets () | |
c906108c | 4082 | { |
d01949b6 | 4083 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4084 | char *buf; |
085dd6e6 | 4085 | char *ptr; |
31d99776 DJ |
4086 | int lose, num_segments = 0, do_sections, do_segments; |
4087 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
31d99776 DJ |
4088 | struct symfile_segment_data *data; |
4089 | ||
4090 | if (symfile_objfile == NULL) | |
4091 | return; | |
c906108c SS |
4092 | |
4093 | putpkt ("qOffsets"); | |
8d64371b TT |
4094 | getpkt (&rs->buf, 0); |
4095 | buf = rs->buf.data (); | |
c906108c SS |
4096 | |
4097 | if (buf[0] == '\000') | |
4098 | return; /* Return silently. Stub doesn't support | |
23860348 | 4099 | this command. */ |
c906108c SS |
4100 | if (buf[0] == 'E') |
4101 | { | |
8a3fe4f8 | 4102 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4103 | return; |
4104 | } | |
4105 | ||
4106 | /* Pick up each field in turn. This used to be done with scanf, but | |
4107 | scanf will make trouble if CORE_ADDR size doesn't match | |
4108 | conversion directives correctly. The following code will work | |
4109 | with any size of CORE_ADDR. */ | |
4110 | text_addr = data_addr = bss_addr = 0; | |
4111 | ptr = buf; | |
4112 | lose = 0; | |
4113 | ||
61012eef | 4114 | if (startswith (ptr, "Text=")) |
c906108c SS |
4115 | { |
4116 | ptr += 5; | |
4117 | /* Don't use strtol, could lose on big values. */ | |
4118 | while (*ptr && *ptr != ';') | |
4119 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4120 | |
61012eef | 4121 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4122 | { |
4123 | ptr += 6; | |
4124 | while (*ptr && *ptr != ';') | |
4125 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4126 | } | |
4127 | else | |
4128 | lose = 1; | |
4129 | ||
61012eef | 4130 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4131 | { |
4132 | ptr += 5; | |
4133 | while (*ptr && *ptr != ';') | |
4134 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4135 | |
31d99776 DJ |
4136 | if (bss_addr != data_addr) |
4137 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4138 | } | |
4139 | else | |
4140 | lose = 1; | |
4141 | } | |
61012eef | 4142 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4143 | { |
31d99776 DJ |
4144 | ptr += 8; |
4145 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4146 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4147 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4148 | num_segments = 1; | |
4149 | ||
61012eef | 4150 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4151 | { |
4152 | ptr += 9; | |
4153 | while (*ptr && *ptr != ';') | |
4154 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4155 | num_segments++; | |
4156 | } | |
c906108c SS |
4157 | } |
4158 | else | |
4159 | lose = 1; | |
4160 | ||
4161 | if (lose) | |
8a3fe4f8 | 4162 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4163 | else if (*ptr != '\0') |
4164 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4165 | |
6a053cb1 | 4166 | section_offsets offs = symfile_objfile->section_offsets; |
c906108c | 4167 | |
31d99776 DJ |
4168 | data = get_symfile_segment_data (symfile_objfile->obfd); |
4169 | do_segments = (data != NULL); | |
4170 | do_sections = num_segments == 0; | |
c906108c | 4171 | |
28c32713 | 4172 | if (num_segments > 0) |
31d99776 | 4173 | { |
31d99776 DJ |
4174 | segments[0] = text_addr; |
4175 | segments[1] = data_addr; | |
4176 | } | |
28c32713 JB |
4177 | /* If we have two segments, we can still try to relocate everything |
4178 | by assuming that the .text and .data offsets apply to the whole | |
4179 | text and data segments. Convert the offsets given in the packet | |
4180 | to base addresses for symfile_map_offsets_to_segments. */ | |
4181 | else if (data && data->num_segments == 2) | |
4182 | { | |
4183 | segments[0] = data->segment_bases[0] + text_addr; | |
4184 | segments[1] = data->segment_bases[1] + data_addr; | |
4185 | num_segments = 2; | |
4186 | } | |
8d385431 DJ |
4187 | /* If the object file has only one segment, assume that it is text |
4188 | rather than data; main programs with no writable data are rare, | |
4189 | but programs with no code are useless. Of course the code might | |
4190 | have ended up in the data segment... to detect that we would need | |
4191 | the permissions here. */ | |
4192 | else if (data && data->num_segments == 1) | |
4193 | { | |
4194 | segments[0] = data->segment_bases[0] + text_addr; | |
4195 | num_segments = 1; | |
4196 | } | |
28c32713 JB |
4197 | /* There's no way to relocate by segment. */ |
4198 | else | |
4199 | do_segments = 0; | |
31d99776 DJ |
4200 | |
4201 | if (do_segments) | |
4202 | { | |
4203 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
4204 | offs, num_segments, segments); | |
4205 | ||
4206 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4207 | error (_("Can not handle qOffsets TextSeg " |
4208 | "response with this symbol file")); | |
31d99776 DJ |
4209 | |
4210 | if (ret > 0) | |
4211 | do_sections = 0; | |
4212 | } | |
c906108c | 4213 | |
9ef895d6 DJ |
4214 | if (data) |
4215 | free_symfile_segment_data (data); | |
31d99776 DJ |
4216 | |
4217 | if (do_sections) | |
4218 | { | |
6a053cb1 | 4219 | offs[SECT_OFF_TEXT (symfile_objfile)] = text_addr; |
31d99776 | 4220 | |
3e43a32a MS |
4221 | /* This is a temporary kludge to force data and bss to use the |
4222 | same offsets because that's what nlmconv does now. The real | |
4223 | solution requires changes to the stub and remote.c that I | |
4224 | don't have time to do right now. */ | |
31d99776 | 4225 | |
6a053cb1 TT |
4226 | offs[SECT_OFF_DATA (symfile_objfile)] = data_addr; |
4227 | offs[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
31d99776 | 4228 | } |
c906108c SS |
4229 | |
4230 | objfile_relocate (symfile_objfile, offs); | |
4231 | } | |
4232 | ||
9a7071a8 | 4233 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4234 | |
4235 | void | |
4236 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4237 | { |
5d93a237 TT |
4238 | struct remote_state *rs = get_remote_state (); |
4239 | ||
9a7071a8 | 4240 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4241 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4242 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4243 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4244 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4245 | { | |
5d93a237 | 4246 | serial_send_break (rs->remote_desc); |
c33e31fd | 4247 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4248 | } |
4249 | else | |
4250 | internal_error (__FILE__, __LINE__, | |
4251 | _("Invalid value for interrupt_sequence_mode: %s."), | |
4252 | interrupt_sequence_mode); | |
4253 | } | |
4254 | ||
3405876a PA |
4255 | |
4256 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4257 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4258 | ||
4259 | static ptid_t | |
4260 | stop_reply_extract_thread (char *stop_reply) | |
4261 | { | |
4262 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4263 | { | |
256642e8 | 4264 | const char *p; |
3405876a PA |
4265 | |
4266 | /* Txx r:val ; r:val (...) */ | |
4267 | p = &stop_reply[3]; | |
4268 | ||
4269 | /* Look for "register" named "thread". */ | |
4270 | while (*p != '\0') | |
4271 | { | |
256642e8 | 4272 | const char *p1; |
3405876a PA |
4273 | |
4274 | p1 = strchr (p, ':'); | |
4275 | if (p1 == NULL) | |
4276 | return null_ptid; | |
4277 | ||
4278 | if (strncmp (p, "thread", p1 - p) == 0) | |
4279 | return read_ptid (++p1, &p); | |
4280 | ||
4281 | p1 = strchr (p, ';'); | |
4282 | if (p1 == NULL) | |
4283 | return null_ptid; | |
4284 | p1++; | |
4285 | ||
4286 | p = p1; | |
4287 | } | |
4288 | } | |
4289 | ||
4290 | return null_ptid; | |
4291 | } | |
4292 | ||
b7ea362b PA |
4293 | /* Determine the remote side's current thread. If we have a stop |
4294 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4295 | "thread" register we can extract the current thread from. If not, | |
4296 | ask the remote which is the current thread with qC. The former | |
4297 | method avoids a roundtrip. */ | |
4298 | ||
6b8edb51 PA |
4299 | ptid_t |
4300 | remote_target::get_current_thread (char *wait_status) | |
b7ea362b | 4301 | { |
6a49a997 | 4302 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4303 | |
4304 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4305 | the target architecture, which we haven't yet fully determined at | |
4306 | this point. */ | |
4307 | if (wait_status != NULL) | |
4308 | ptid = stop_reply_extract_thread (wait_status); | |
d7e15655 | 4309 | if (ptid == null_ptid) |
b7ea362b PA |
4310 | ptid = remote_current_thread (inferior_ptid); |
4311 | ||
4312 | return ptid; | |
4313 | } | |
4314 | ||
49c62f2e PA |
4315 | /* Query the remote target for which is the current thread/process, |
4316 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4317 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4318 | to return the current thread. |
4319 | ||
4320 | This function is called after handling the '?' or 'vRun' packets, | |
4321 | whose response is a stop reply from which we can also try | |
4322 | extracting the thread. If the target doesn't support the explicit | |
4323 | qC query, we infer the current thread from that stop reply, passed | |
4324 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e | 4325 | |
6b8edb51 PA |
4326 | void |
4327 | remote_target::add_current_inferior_and_thread (char *wait_status) | |
49c62f2e PA |
4328 | { |
4329 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 4330 | bool fake_pid_p = false; |
49c62f2e PA |
4331 | |
4332 | inferior_ptid = null_ptid; | |
4333 | ||
b7ea362b | 4334 | /* Now, if we have thread information, update inferior_ptid. */ |
87215ad1 | 4335 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4336 | |
87215ad1 | 4337 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4338 | { |
4339 | if (!remote_multi_process_p (rs)) | |
9ab8741a | 4340 | fake_pid_p = true; |
49c62f2e PA |
4341 | } |
4342 | else | |
4343 | { | |
4344 | /* Without this, some commands which require an active target | |
4345 | (such as kill) won't work. This variable serves (at least) | |
4346 | double duty as both the pid of the target process (if it has | |
4347 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4348 | curr_ptid = magic_null_ptid; |
9ab8741a | 4349 | fake_pid_p = true; |
49c62f2e PA |
4350 | } |
4351 | ||
e99b03dc | 4352 | remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1); |
49c62f2e | 4353 | |
87215ad1 SDJ |
4354 | /* Add the main thread and switch to it. Don't try reading |
4355 | registers yet, since we haven't fetched the target description | |
4356 | yet. */ | |
5b6d1e4f | 4357 | thread_info *tp = add_thread_silent (this, curr_ptid); |
87215ad1 | 4358 | switch_to_thread_no_regs (tp); |
49c62f2e PA |
4359 | } |
4360 | ||
6efcd9a8 PA |
4361 | /* Print info about a thread that was found already stopped on |
4362 | connection. */ | |
4363 | ||
4364 | static void | |
4365 | print_one_stopped_thread (struct thread_info *thread) | |
4366 | { | |
4367 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
4368 | ||
00431a78 | 4369 | switch_to_thread (thread); |
f2ffa92b | 4370 | thread->suspend.stop_pc = get_frame_pc (get_current_frame ()); |
6efcd9a8 PA |
4371 | set_current_sal_from_frame (get_current_frame ()); |
4372 | ||
4373 | thread->suspend.waitstatus_pending_p = 0; | |
4374 | ||
4375 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
4376 | { | |
4377 | enum gdb_signal sig = ws->value.sig; | |
4378 | ||
4379 | if (signal_print_state (sig)) | |
76727919 | 4380 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4381 | } |
76727919 | 4382 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4383 | } |
4384 | ||
221e1a37 PA |
4385 | /* Process all initial stop replies the remote side sent in response |
4386 | to the ? packet. These indicate threads that were already stopped | |
4387 | on initial connection. We mark these threads as stopped and print | |
4388 | their current frame before giving the user the prompt. */ | |
4389 | ||
6b8edb51 PA |
4390 | void |
4391 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4392 | { |
4393 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4394 | struct thread_info *selected = NULL; |
4395 | struct thread_info *lowest_stopped = NULL; | |
4396 | struct thread_info *first = NULL; | |
221e1a37 PA |
4397 | |
4398 | /* Consume the initial pending events. */ | |
4399 | while (pending_stop_replies-- > 0) | |
4400 | { | |
4401 | ptid_t waiton_ptid = minus_one_ptid; | |
4402 | ptid_t event_ptid; | |
4403 | struct target_waitstatus ws; | |
4404 | int ignore_event = 0; | |
4405 | ||
4406 | memset (&ws, 0, sizeof (ws)); | |
4407 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
4408 | if (remote_debug) | |
4409 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
4410 | ||
4411 | switch (ws.kind) | |
4412 | { | |
4413 | case TARGET_WAITKIND_IGNORE: | |
4414 | case TARGET_WAITKIND_NO_RESUMED: | |
4415 | case TARGET_WAITKIND_SIGNALLED: | |
4416 | case TARGET_WAITKIND_EXITED: | |
4417 | /* We shouldn't see these, but if we do, just ignore. */ | |
4418 | if (remote_debug) | |
4419 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
4420 | ignore_event = 1; | |
4421 | break; | |
4422 | ||
4423 | case TARGET_WAITKIND_EXECD: | |
4424 | xfree (ws.value.execd_pathname); | |
4425 | break; | |
4426 | default: | |
4427 | break; | |
4428 | } | |
4429 | ||
4430 | if (ignore_event) | |
4431 | continue; | |
4432 | ||
5b6d1e4f | 4433 | thread_info *evthread = find_thread_ptid (this, event_ptid); |
221e1a37 PA |
4434 | |
4435 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
4436 | { | |
4437 | enum gdb_signal sig = ws.value.sig; | |
4438 | ||
4439 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4440 | instead of signal 0. Suppress it. */ | |
4441 | if (sig == GDB_SIGNAL_TRAP) | |
4442 | sig = GDB_SIGNAL_0; | |
b926417a | 4443 | evthread->suspend.stop_signal = sig; |
6efcd9a8 PA |
4444 | ws.value.sig = sig; |
4445 | } | |
221e1a37 | 4446 | |
b926417a | 4447 | evthread->suspend.waitstatus = ws; |
6efcd9a8 PA |
4448 | |
4449 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
4450 | || ws.value.sig != GDB_SIGNAL_0) | |
b926417a | 4451 | evthread->suspend.waitstatus_pending_p = 1; |
6efcd9a8 | 4452 | |
719546c4 SM |
4453 | set_executing (this, event_ptid, false); |
4454 | set_running (this, event_ptid, false); | |
b926417a | 4455 | get_remote_thread_info (evthread)->vcont_resumed = 0; |
6efcd9a8 PA |
4456 | } |
4457 | ||
4458 | /* "Notice" the new inferiors before anything related to | |
4459 | registers/memory. */ | |
5b6d1e4f | 4460 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4461 | { |
6efcd9a8 PA |
4462 | inf->needs_setup = 1; |
4463 | ||
4464 | if (non_stop) | |
4465 | { | |
08036331 | 4466 | thread_info *thread = any_live_thread_of_inferior (inf); |
00431a78 | 4467 | notice_new_inferior (thread, thread->state == THREAD_RUNNING, |
6efcd9a8 PA |
4468 | from_tty); |
4469 | } | |
4470 | } | |
4471 | ||
4472 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4473 | records the threads' stop pc, so must be done after "noticing" | |
4474 | the inferiors. */ | |
4475 | if (!non_stop) | |
4476 | { | |
4477 | stop_all_threads (); | |
4478 | ||
4479 | /* If all threads of an inferior were already stopped, we | |
4480 | haven't setup the inferior yet. */ | |
5b6d1e4f | 4481 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4482 | { |
6efcd9a8 PA |
4483 | if (inf->needs_setup) |
4484 | { | |
08036331 | 4485 | thread_info *thread = any_live_thread_of_inferior (inf); |
6efcd9a8 PA |
4486 | switch_to_thread_no_regs (thread); |
4487 | setup_inferior (0); | |
4488 | } | |
4489 | } | |
221e1a37 | 4490 | } |
6efcd9a8 PA |
4491 | |
4492 | /* Now go over all threads that are stopped, and print their current | |
4493 | frame. If all-stop, then if there's a signalled thread, pick | |
4494 | that as current. */ | |
5b6d1e4f | 4495 | for (thread_info *thread : all_non_exited_threads (this)) |
6efcd9a8 | 4496 | { |
6efcd9a8 PA |
4497 | if (first == NULL) |
4498 | first = thread; | |
4499 | ||
4500 | if (!non_stop) | |
00431a78 | 4501 | thread->set_running (false); |
6efcd9a8 PA |
4502 | else if (thread->state != THREAD_STOPPED) |
4503 | continue; | |
4504 | ||
6efcd9a8 PA |
4505 | if (selected == NULL |
4506 | && thread->suspend.waitstatus_pending_p) | |
4507 | selected = thread; | |
4508 | ||
5d5658a1 PA |
4509 | if (lowest_stopped == NULL |
4510 | || thread->inf->num < lowest_stopped->inf->num | |
4511 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4512 | lowest_stopped = thread; |
4513 | ||
4514 | if (non_stop) | |
4515 | print_one_stopped_thread (thread); | |
4516 | } | |
4517 | ||
4518 | /* In all-stop, we only print the status of one thread, and leave | |
4519 | others with their status pending. */ | |
4520 | if (!non_stop) | |
4521 | { | |
08036331 | 4522 | thread_info *thread = selected; |
6efcd9a8 PA |
4523 | if (thread == NULL) |
4524 | thread = lowest_stopped; | |
4525 | if (thread == NULL) | |
4526 | thread = first; | |
4527 | ||
4528 | print_one_stopped_thread (thread); | |
4529 | } | |
4530 | ||
4531 | /* For "info program". */ | |
08036331 | 4532 | thread_info *thread = inferior_thread (); |
6efcd9a8 | 4533 | if (thread->state == THREAD_STOPPED) |
5b6d1e4f | 4534 | set_last_target_status (this, inferior_ptid, thread->suspend.waitstatus); |
221e1a37 PA |
4535 | } |
4536 | ||
048094ac PA |
4537 | /* Start the remote connection and sync state. */ |
4538 | ||
f6ac5f3d PA |
4539 | void |
4540 | remote_target::start_remote (int from_tty, int extended_p) | |
c906108c | 4541 | { |
c8d104ad PA |
4542 | struct remote_state *rs = get_remote_state (); |
4543 | struct packet_config *noack_config; | |
2d717e4f | 4544 | char *wait_status = NULL; |
8621d6a9 | 4545 | |
048094ac PA |
4546 | /* Signal other parts that we're going through the initial setup, |
4547 | and so things may not be stable yet. E.g., we don't try to | |
4548 | install tracepoints until we've relocated symbols. Also, a | |
4549 | Ctrl-C before we're connected and synced up can't interrupt the | |
4550 | target. Instead, it offers to drop the (potentially wedged) | |
4551 | connection. */ | |
4552 | rs->starting_up = 1; | |
4553 | ||
522002f9 | 4554 | QUIT; |
c906108c | 4555 | |
9a7071a8 JB |
4556 | if (interrupt_on_connect) |
4557 | send_interrupt_sequence (); | |
4558 | ||
57e12211 | 4559 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4560 | remote_serial_write ("+", 1); |
1e51243a | 4561 | |
c8d104ad PA |
4562 | /* The first packet we send to the target is the optional "supported |
4563 | packets" request. If the target can answer this, it will tell us | |
4564 | which later probes to skip. */ | |
4565 | remote_query_supported (); | |
4566 | ||
d914c394 | 4567 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4568 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4569 | set_permissions (); |
d914c394 | 4570 | |
57809e5e JK |
4571 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4572 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4573 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4574 | invalid reply and GDB would return error in | |
4575 | remote_hostio_set_filesystem, making remote files access impossible. | |
4576 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4577 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4578 | { | |
4579 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4580 | ||
4581 | putpkt (v_mustreplyempty); | |
8d64371b TT |
4582 | getpkt (&rs->buf, 0); |
4583 | if (strcmp (rs->buf.data (), "OK") == 0) | |
57809e5e | 4584 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; |
8d64371b | 4585 | else if (strcmp (rs->buf.data (), "") != 0) |
57809e5e | 4586 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, |
8d64371b | 4587 | rs->buf.data ()); |
57809e5e JK |
4588 | } |
4589 | ||
c8d104ad PA |
4590 | /* Next, we possibly activate noack mode. |
4591 | ||
4592 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4593 | enable noack mode if the stub reported a wish for it with | |
4594 | qSupported. | |
4595 | ||
4596 | If set to TRUE, then enable noack mode even if the stub didn't | |
4597 | report it in qSupported. If the stub doesn't reply OK, the | |
4598 | session ends with an error. | |
4599 | ||
4600 | If FALSE, then don't activate noack mode, regardless of what the | |
4601 | stub claimed should be the default with qSupported. */ | |
4602 | ||
4603 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4604 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4605 | { |
4606 | putpkt ("QStartNoAckMode"); | |
8d64371b | 4607 | getpkt (&rs->buf, 0); |
c8d104ad PA |
4608 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) |
4609 | rs->noack_mode = 1; | |
4610 | } | |
4611 | ||
04bd08de | 4612 | if (extended_p) |
5fe04517 PA |
4613 | { |
4614 | /* Tell the remote that we are using the extended protocol. */ | |
4615 | putpkt ("!"); | |
8d64371b | 4616 | getpkt (&rs->buf, 0); |
5fe04517 PA |
4617 | } |
4618 | ||
9b224c5e PA |
4619 | /* Let the target know which signals it is allowed to pass down to |
4620 | the program. */ | |
4621 | update_signals_program_target (); | |
4622 | ||
d962ef82 DJ |
4623 | /* Next, if the target can specify a description, read it. We do |
4624 | this before anything involving memory or registers. */ | |
4625 | target_find_description (); | |
4626 | ||
6c95b8df PA |
4627 | /* Next, now that we know something about the target, update the |
4628 | address spaces in the program spaces. */ | |
4629 | update_address_spaces (); | |
4630 | ||
50c71eaf PA |
4631 | /* On OSs where the list of libraries is global to all |
4632 | processes, we fetch them early. */ | |
f5656ead | 4633 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4634 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4635 | |
6efcd9a8 | 4636 | if (target_is_non_stop_p ()) |
74531fed | 4637 | { |
4082afcc | 4638 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4639 | error (_("Non-stop mode requested, but remote " |
4640 | "does not support non-stop")); | |
74531fed PA |
4641 | |
4642 | putpkt ("QNonStop:1"); | |
8d64371b | 4643 | getpkt (&rs->buf, 0); |
74531fed | 4644 | |
8d64371b TT |
4645 | if (strcmp (rs->buf.data (), "OK") != 0) |
4646 | error (_("Remote refused setting non-stop mode with: %s"), | |
4647 | rs->buf.data ()); | |
74531fed PA |
4648 | |
4649 | /* Find about threads and processes the stub is already | |
4650 | controlling. We default to adding them in the running state. | |
4651 | The '?' query below will then tell us about which threads are | |
4652 | stopped. */ | |
f6ac5f3d | 4653 | this->update_thread_list (); |
74531fed | 4654 | } |
4082afcc | 4655 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4656 | { |
4657 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4658 | Request it explicitly. */ |
74531fed | 4659 | putpkt ("QNonStop:0"); |
8d64371b | 4660 | getpkt (&rs->buf, 0); |
74531fed | 4661 | |
8d64371b TT |
4662 | if (strcmp (rs->buf.data (), "OK") != 0) |
4663 | error (_("Remote refused setting all-stop mode with: %s"), | |
4664 | rs->buf.data ()); | |
74531fed PA |
4665 | } |
4666 | ||
a0743c90 YQ |
4667 | /* Upload TSVs regardless of whether the target is running or not. The |
4668 | remote stub, such as GDBserver, may have some predefined or builtin | |
4669 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4670 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4671 | { |
4672 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4673 | ||
f6ac5f3d | 4674 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4675 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4676 | } | |
4677 | ||
2d717e4f DJ |
4678 | /* Check whether the target is running now. */ |
4679 | putpkt ("?"); | |
8d64371b | 4680 | getpkt (&rs->buf, 0); |
2d717e4f | 4681 | |
6efcd9a8 | 4682 | if (!target_is_non_stop_p ()) |
2d717e4f | 4683 | { |
74531fed | 4684 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4685 | { |
04bd08de | 4686 | if (!extended_p) |
74531fed | 4687 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4688 | |
4689 | /* We're connected, but not running. Drop out before we | |
4690 | call start_remote. */ | |
e278ad5b | 4691 | rs->starting_up = 0; |
c35b1492 | 4692 | return; |
2d717e4f DJ |
4693 | } |
4694 | else | |
74531fed | 4695 | { |
74531fed | 4696 | /* Save the reply for later. */ |
8d64371b TT |
4697 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
4698 | strcpy (wait_status, rs->buf.data ()); | |
74531fed PA |
4699 | } |
4700 | ||
b7ea362b | 4701 | /* Fetch thread list. */ |
e8032dde | 4702 | target_update_thread_list (); |
b7ea362b | 4703 | |
74531fed PA |
4704 | /* Let the stub know that we want it to return the thread. */ |
4705 | set_continue_thread (minus_one_ptid); | |
4706 | ||
5b6d1e4f | 4707 | if (thread_count (this) == 0) |
b7ea362b PA |
4708 | { |
4709 | /* Target has no concept of threads at all. GDB treats | |
4710 | non-threaded target as single-threaded; add a main | |
4711 | thread. */ | |
4712 | add_current_inferior_and_thread (wait_status); | |
4713 | } | |
4714 | else | |
4715 | { | |
4716 | /* We have thread information; select the thread the target | |
4717 | says should be current. If we're reconnecting to a | |
4718 | multi-threaded program, this will ideally be the thread | |
4719 | that last reported an event before GDB disconnected. */ | |
75c6c844 PA |
4720 | ptid_t curr_thread = get_current_thread (wait_status); |
4721 | if (curr_thread == null_ptid) | |
b7ea362b PA |
4722 | { |
4723 | /* Odd... The target was able to list threads, but not | |
4724 | tell us which thread was current (no "thread" | |
4725 | register in T stop reply?). Just pick the first | |
4726 | thread in the thread list then. */ | |
c9f35b34 KB |
4727 | |
4728 | if (remote_debug) | |
4729 | fprintf_unfiltered (gdb_stdlog, | |
4730 | "warning: couldn't determine remote " | |
4731 | "current thread; picking first in list.\n"); | |
4732 | ||
5b6d1e4f PA |
4733 | for (thread_info *tp : all_non_exited_threads (this, |
4734 | minus_one_ptid)) | |
75c6c844 PA |
4735 | { |
4736 | switch_to_thread (tp); | |
4737 | break; | |
4738 | } | |
b7ea362b | 4739 | } |
75c6c844 | 4740 | else |
5b6d1e4f | 4741 | switch_to_thread (find_thread_ptid (this, curr_thread)); |
b7ea362b | 4742 | } |
74531fed | 4743 | |
6e586cc5 YQ |
4744 | /* init_wait_for_inferior should be called before get_offsets in order |
4745 | to manage `inserted' flag in bp loc in a correct state. | |
4746 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4747 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4748 | start_remote, set `inserted' flag to 1. In the initialization of | |
4749 | inferior, breakpoint_init_inferior should be called first, and then | |
4750 | breakpoint_re_set can be called. If this order is broken, state of | |
4751 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4752 | manipulation. */ | |
4753 | init_wait_for_inferior (); | |
4754 | ||
74531fed PA |
4755 | get_offsets (); /* Get text, data & bss offsets. */ |
4756 | ||
d962ef82 DJ |
4757 | /* If we could not find a description using qXfer, and we know |
4758 | how to do it some other way, try again. This is not | |
4759 | supported for non-stop; it could be, but it is tricky if | |
4760 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4761 | if (remote_read_description_p (this) |
f5656ead | 4762 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4763 | { |
4764 | target_clear_description (); | |
4765 | target_find_description (); | |
4766 | } | |
4767 | ||
74531fed PA |
4768 | /* Use the previously fetched status. */ |
4769 | gdb_assert (wait_status != NULL); | |
8d64371b | 4770 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
4771 | rs->cached_wait_status = 1; |
4772 | ||
f6ac5f3d | 4773 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4774 | } |
4775 | else | |
4776 | { | |
68c97600 PA |
4777 | /* Clear WFI global state. Do this before finding about new |
4778 | threads and inferiors, and setting the current inferior. | |
4779 | Otherwise we would clear the proceed status of the current | |
4780 | inferior when we want its stop_soon state to be preserved | |
4781 | (see notice_new_inferior). */ | |
4782 | init_wait_for_inferior (); | |
4783 | ||
74531fed PA |
4784 | /* In non-stop, we will either get an "OK", meaning that there |
4785 | are no stopped threads at this time; or, a regular stop | |
4786 | reply. In the latter case, there may be more than one thread | |
4787 | stopped --- we pull them all out using the vStopped | |
4788 | mechanism. */ | |
8d64371b | 4789 | if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 4790 | { |
722247f1 | 4791 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4792 | |
722247f1 YQ |
4793 | /* remote_notif_get_pending_replies acks this one, and gets |
4794 | the rest out. */ | |
f48ff2a7 | 4795 | rs->notif_state->pending_event[notif_client_stop.id] |
8d64371b | 4796 | = remote_notif_parse (this, notif, rs->buf.data ()); |
722247f1 | 4797 | remote_notif_get_pending_events (notif); |
74531fed | 4798 | } |
2d717e4f | 4799 | |
5b6d1e4f | 4800 | if (thread_count (this) == 0) |
74531fed | 4801 | { |
04bd08de | 4802 | if (!extended_p) |
74531fed | 4803 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4804 | |
c35b1492 PA |
4805 | /* We're connected, but not running. Drop out before we |
4806 | call start_remote. */ | |
e278ad5b | 4807 | rs->starting_up = 0; |
c35b1492 PA |
4808 | return; |
4809 | } | |
74531fed | 4810 | |
74531fed PA |
4811 | /* In non-stop mode, any cached wait status will be stored in |
4812 | the stop reply queue. */ | |
4813 | gdb_assert (wait_status == NULL); | |
f0223081 | 4814 | |
2455069d | 4815 | /* Report all signals during attach/startup. */ |
adc6a863 | 4816 | pass_signals ({}); |
221e1a37 PA |
4817 | |
4818 | /* If there are already stopped threads, mark them stopped and | |
4819 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4820 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4821 | |
4822 | if (target_can_async_p ()) | |
4823 | target_async (1); | |
74531fed | 4824 | } |
c8d104ad | 4825 | |
c8d104ad PA |
4826 | /* If we connected to a live target, do some additional setup. */ |
4827 | if (target_has_execution) | |
4828 | { | |
f4ccffad | 4829 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4830 | remote_check_symbols (); |
c8d104ad | 4831 | } |
50c71eaf | 4832 | |
d5551862 SS |
4833 | /* Possibly the target has been engaged in a trace run started |
4834 | previously; find out where things are at. */ | |
f6ac5f3d | 4835 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 4836 | { |
00bf0b85 | 4837 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4838 | |
00bf0b85 SS |
4839 | if (current_trace_status ()->running) |
4840 | printf_filtered (_("Trace is already running on the target.\n")); | |
4841 | ||
f6ac5f3d | 4842 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
4843 | |
4844 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4845 | } |
4846 | ||
c0272db5 TW |
4847 | /* Possibly the target has been engaged in a btrace record started |
4848 | previously; find out where things are at. */ | |
4849 | remote_btrace_maybe_reopen (); | |
4850 | ||
1e51243a PA |
4851 | /* The thread and inferior lists are now synchronized with the |
4852 | target, our symbols have been relocated, and we're merged the | |
4853 | target's tracepoints with ours. We're done with basic start | |
4854 | up. */ | |
4855 | rs->starting_up = 0; | |
4856 | ||
a25a5a45 PA |
4857 | /* Maybe breakpoints are global and need to be inserted now. */ |
4858 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4859 | insert_breakpoints (); |
c906108c SS |
4860 | } |
4861 | ||
121b3efd PA |
4862 | const char * |
4863 | remote_target::connection_string () | |
4864 | { | |
4865 | remote_state *rs = get_remote_state (); | |
4866 | ||
4867 | if (rs->remote_desc->name != NULL) | |
4868 | return rs->remote_desc->name; | |
4869 | else | |
4870 | return NULL; | |
4871 | } | |
4872 | ||
c906108c SS |
4873 | /* Open a connection to a remote debugger. |
4874 | NAME is the filename used for communication. */ | |
4875 | ||
f6ac5f3d PA |
4876 | void |
4877 | remote_target::open (const char *name, int from_tty) | |
c906108c | 4878 | { |
f6ac5f3d | 4879 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
4880 | } |
4881 | ||
c906108c SS |
4882 | /* Open a connection to a remote debugger using the extended |
4883 | remote gdb protocol. NAME is the filename used for communication. */ | |
4884 | ||
f6ac5f3d PA |
4885 | void |
4886 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 4887 | { |
f6ac5f3d | 4888 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
4889 | } |
4890 | ||
ca4f7f8b PA |
4891 | /* Reset all packets back to "unknown support". Called when opening a |
4892 | new connection to a remote target. */ | |
c906108c | 4893 | |
d471ea57 | 4894 | static void |
ca4f7f8b | 4895 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4896 | { |
4897 | int i; | |
a744cf53 | 4898 | |
444abaca | 4899 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4900 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4901 | } |
4902 | ||
ca4f7f8b PA |
4903 | /* Initialize all packet configs. */ |
4904 | ||
4905 | static void | |
4906 | init_all_packet_configs (void) | |
4907 | { | |
4908 | int i; | |
4909 | ||
4910 | for (i = 0; i < PACKET_MAX; i++) | |
4911 | { | |
4912 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4913 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4914 | } | |
4915 | } | |
4916 | ||
23860348 | 4917 | /* Symbol look-up. */ |
dc8acb97 | 4918 | |
6b8edb51 PA |
4919 | void |
4920 | remote_target::remote_check_symbols () | |
dc8acb97 | 4921 | { |
8d64371b | 4922 | char *tmp; |
dc8acb97 MS |
4923 | int end; |
4924 | ||
63154eca PA |
4925 | /* The remote side has no concept of inferiors that aren't running |
4926 | yet, it only knows about running processes. If we're connected | |
4927 | but our current inferior is not running, we should not invite the | |
4928 | remote target to request symbol lookups related to its | |
4929 | (unrelated) current process. */ | |
4930 | if (!target_has_execution) | |
4931 | return; | |
4932 | ||
4082afcc | 4933 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4934 | return; |
4935 | ||
63154eca PA |
4936 | /* Make sure the remote is pointing at the right process. Note |
4937 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4938 | set_general_process (); |
4939 | ||
6d820c5c DJ |
4940 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4941 | because we need both at the same time. */ | |
66644cd3 | 4942 | gdb::char_vector msg (get_remote_packet_size ()); |
8d64371b | 4943 | gdb::char_vector reply (get_remote_packet_size ()); |
6d820c5c | 4944 | |
23860348 | 4945 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4946 | |
4947 | putpkt ("qSymbol::"); | |
8d64371b | 4948 | getpkt (&reply, 0); |
28170b88 | 4949 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); |
dc8acb97 | 4950 | |
8d64371b | 4951 | while (startswith (reply.data (), "qSymbol:")) |
dc8acb97 | 4952 | { |
77e371c0 TT |
4953 | struct bound_minimal_symbol sym; |
4954 | ||
dc8acb97 | 4955 | tmp = &reply[8]; |
66644cd3 AB |
4956 | end = hex2bin (tmp, reinterpret_cast <gdb_byte *> (msg.data ()), |
4957 | strlen (tmp) / 2); | |
dc8acb97 | 4958 | msg[end] = '\0'; |
66644cd3 | 4959 | sym = lookup_minimal_symbol (msg.data (), NULL, NULL); |
3b7344d5 | 4960 | if (sym.minsym == NULL) |
66644cd3 AB |
4961 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol::%s", |
4962 | &reply[8]); | |
dc8acb97 | 4963 | else |
2bbe3cc1 | 4964 | { |
f5656ead | 4965 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4966 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4967 | |
4968 | /* If this is a function address, return the start of code | |
4969 | instead of any data function descriptor. */ | |
f5656ead | 4970 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 | 4971 | sym_addr, |
8b88a78e | 4972 | current_top_target ()); |
2bbe3cc1 | 4973 | |
66644cd3 | 4974 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol:%s:%s", |
5af949e3 | 4975 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 | 4976 | } |
66644cd3 AB |
4977 | |
4978 | putpkt (msg.data ()); | |
8d64371b | 4979 | getpkt (&reply, 0); |
dc8acb97 MS |
4980 | } |
4981 | } | |
4982 | ||
9db8d71f | 4983 | static struct serial * |
baa336ce | 4984 | remote_serial_open (const char *name) |
9db8d71f DJ |
4985 | { |
4986 | static int udp_warning = 0; | |
4987 | ||
4988 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4989 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4990 | serial connection is reliable and not the serial connection promising | |
4991 | to be. */ | |
61012eef | 4992 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4993 | { |
3e43a32a MS |
4994 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4995 | "Some events may be lost, rendering further debugging " | |
4996 | "impossible.")); | |
9db8d71f DJ |
4997 | udp_warning = 1; |
4998 | } | |
4999 | ||
5000 | return serial_open (name); | |
5001 | } | |
5002 | ||
d914c394 SS |
5003 | /* Inform the target of our permission settings. The permission flags |
5004 | work without this, but if the target knows the settings, it can do | |
5005 | a couple things. First, it can add its own check, to catch cases | |
5006 | that somehow manage to get by the permissions checks in target | |
5007 | methods. Second, if the target is wired to disallow particular | |
5008 | settings (for instance, a system in the field that is not set up to | |
5009 | be able to stop at a breakpoint), it can object to any unavailable | |
5010 | permissions. */ | |
5011 | ||
5012 | void | |
f6ac5f3d | 5013 | remote_target::set_permissions () |
d914c394 SS |
5014 | { |
5015 | struct remote_state *rs = get_remote_state (); | |
5016 | ||
8d64371b | 5017 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAllow:" |
bba74b36 YQ |
5018 | "WriteReg:%x;WriteMem:%x;" |
5019 | "InsertBreak:%x;InsertTrace:%x;" | |
5020 | "InsertFastTrace:%x;Stop:%x", | |
5021 | may_write_registers, may_write_memory, | |
5022 | may_insert_breakpoints, may_insert_tracepoints, | |
5023 | may_insert_fast_tracepoints, may_stop); | |
d914c394 | 5024 | putpkt (rs->buf); |
8d64371b | 5025 | getpkt (&rs->buf, 0); |
d914c394 SS |
5026 | |
5027 | /* If the target didn't like the packet, warn the user. Do not try | |
5028 | to undo the user's settings, that would just be maddening. */ | |
8d64371b TT |
5029 | if (strcmp (rs->buf.data (), "OK") != 0) |
5030 | warning (_("Remote refused setting permissions with: %s"), | |
5031 | rs->buf.data ()); | |
d914c394 SS |
5032 | } |
5033 | ||
be2a5f71 DJ |
5034 | /* This type describes each known response to the qSupported |
5035 | packet. */ | |
5036 | struct protocol_feature | |
5037 | { | |
5038 | /* The name of this protocol feature. */ | |
5039 | const char *name; | |
5040 | ||
5041 | /* The default for this protocol feature. */ | |
5042 | enum packet_support default_support; | |
5043 | ||
5044 | /* The function to call when this feature is reported, or after | |
5045 | qSupported processing if the feature is not supported. | |
5046 | The first argument points to this structure. The second | |
5047 | argument indicates whether the packet requested support be | |
5048 | enabled, disabled, or probed (or the default, if this function | |
5049 | is being called at the end of processing and this feature was | |
5050 | not reported). The third argument may be NULL; if not NULL, it | |
5051 | is a NUL-terminated string taken from the packet following | |
5052 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5053 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5054 | enum packet_support, const char *); | |
be2a5f71 DJ |
5055 | |
5056 | /* The corresponding packet for this feature. Only used if | |
5057 | FUNC is remote_supported_packet. */ | |
5058 | int packet; | |
5059 | }; | |
5060 | ||
be2a5f71 | 5061 | static void |
6b8edb51 PA |
5062 | remote_supported_packet (remote_target *remote, |
5063 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5064 | enum packet_support support, |
5065 | const char *argument) | |
5066 | { | |
5067 | if (argument) | |
5068 | { | |
5069 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5070 | " \"%s\"."), feature->name); | |
5071 | return; | |
5072 | } | |
5073 | ||
4082afcc | 5074 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5075 | } |
be2a5f71 | 5076 | |
6b8edb51 PA |
5077 | void |
5078 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5079 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5080 | { |
5081 | struct remote_state *rs = get_remote_state (); | |
5082 | ||
5083 | int packet_size; | |
5084 | char *value_end; | |
5085 | ||
5086 | if (support != PACKET_ENABLE) | |
5087 | return; | |
5088 | ||
5089 | if (value == NULL || *value == '\0') | |
5090 | { | |
5091 | warning (_("Remote target reported \"%s\" without a size."), | |
5092 | feature->name); | |
5093 | return; | |
5094 | } | |
5095 | ||
5096 | errno = 0; | |
5097 | packet_size = strtol (value, &value_end, 16); | |
5098 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5099 | { | |
5100 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5101 | feature->name, value); | |
5102 | return; | |
5103 | } | |
5104 | ||
be2a5f71 DJ |
5105 | /* Record the new maximum packet size. */ |
5106 | rs->explicit_packet_size = packet_size; | |
5107 | } | |
5108 | ||
cb8c24b6 | 5109 | static void |
6b8edb51 PA |
5110 | remote_packet_size (remote_target *remote, const protocol_feature *feature, |
5111 | enum packet_support support, const char *value) | |
5112 | { | |
5113 | remote->remote_packet_size (feature, support, value); | |
5114 | } | |
5115 | ||
dc473cfb | 5116 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5117 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5118 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5119 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5120 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5121 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5122 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5123 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5124 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5125 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5126 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5127 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5128 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5129 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5130 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5131 | PACKET_qXfer_memory_map }, |
07e059b5 VP |
5132 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5133 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5134 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5135 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5136 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5137 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5138 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5139 | PACKET_QPassSignals }, | |
82075af2 JS |
5140 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5141 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5142 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5143 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5144 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5145 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5146 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5147 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5148 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5149 | PACKET_QEnvironmentHexEncoded }, | |
5150 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5151 | PACKET_QEnvironmentReset }, | |
5152 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5153 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5154 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5155 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5156 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5157 | PACKET_multiprocess_feature }, | |
5158 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5159 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5160 | PACKET_qXfer_siginfo_read }, | |
5161 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5162 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5163 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5164 | PACKET_ConditionalTracepoints }, |
4082afcc | 5165 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5166 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5167 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5168 | PACKET_BreakpointCommands }, |
4082afcc | 5169 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5170 | PACKET_FastTracepoints }, |
4082afcc | 5171 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5172 | PACKET_StaticTracepoints }, |
4082afcc | 5173 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5174 | PACKET_InstallInTrace}, |
4082afcc PA |
5175 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5176 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5177 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5178 | PACKET_bc }, | |
5179 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5180 | PACKET_bs }, | |
409873ef SS |
5181 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5182 | PACKET_TracepointSource }, | |
d914c394 SS |
5183 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5184 | PACKET_QAllow }, | |
4082afcc PA |
5185 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5186 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5187 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5188 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5189 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5190 | PACKET_qXfer_uib }, | |
03583c20 UW |
5191 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5192 | PACKET_QDisableRandomization }, | |
d1feda86 | 5193 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5194 | { "QTBuffer:size", PACKET_DISABLE, |
5195 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5196 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5197 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5198 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5199 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5200 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5201 | PACKET_qXfer_btrace }, |
5202 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5203 | PACKET_qXfer_btrace_conf }, |
5204 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5205 | PACKET_Qbtrace_conf_bts_size }, |
5206 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5207 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5208 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5209 | PACKET_fork_event_feature }, | |
5210 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5211 | PACKET_vfork_event_feature }, | |
94585166 DB |
5212 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5213 | PACKET_exec_event_feature }, | |
b20a6524 | 5214 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5215 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5216 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5217 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5218 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
5219 | }; |
5220 | ||
c8d5aac9 L |
5221 | static char *remote_support_xml; |
5222 | ||
5223 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5224 | ||
5225 | void | |
6e39997a | 5226 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5227 | { |
5228 | #if defined(HAVE_LIBEXPAT) | |
5229 | if (remote_support_xml == NULL) | |
c4f7c687 | 5230 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5231 | else |
5232 | { | |
5233 | char *copy = xstrdup (remote_support_xml + 13); | |
ca3a04f6 CB |
5234 | char *saveptr; |
5235 | char *p = strtok_r (copy, ",", &saveptr); | |
c8d5aac9 L |
5236 | |
5237 | do | |
5238 | { | |
5239 | if (strcmp (p, xml) == 0) | |
5240 | { | |
5241 | /* already there */ | |
5242 | xfree (copy); | |
5243 | return; | |
5244 | } | |
5245 | } | |
ca3a04f6 | 5246 | while ((p = strtok_r (NULL, ",", &saveptr)) != NULL); |
c8d5aac9 L |
5247 | xfree (copy); |
5248 | ||
94b0dee1 PA |
5249 | remote_support_xml = reconcat (remote_support_xml, |
5250 | remote_support_xml, ",", xml, | |
5251 | (char *) NULL); | |
c8d5aac9 L |
5252 | } |
5253 | #endif | |
5254 | } | |
5255 | ||
69b6ecb0 TT |
5256 | static void |
5257 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5258 | { |
69b6ecb0 TT |
5259 | if (!msg->empty ()) |
5260 | msg->append (";"); | |
5261 | msg->append (append); | |
c8d5aac9 L |
5262 | } |
5263 | ||
6b8edb51 PA |
5264 | void |
5265 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5266 | { |
5267 | struct remote_state *rs = get_remote_state (); | |
5268 | char *next; | |
5269 | int i; | |
5270 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5271 | ||
5272 | /* The packet support flags are handled differently for this packet | |
5273 | than for most others. We treat an error, a disabled packet, and | |
5274 | an empty response identically: any features which must be reported | |
5275 | to be used will be automatically disabled. An empty buffer | |
5276 | accomplishes this, since that is also the representation for a list | |
5277 | containing no features. */ | |
5278 | ||
5279 | rs->buf[0] = 0; | |
4082afcc | 5280 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5281 | { |
69b6ecb0 | 5282 | std::string q; |
c8d5aac9 | 5283 | |
73b8c1fd | 5284 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5285 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5286 | |
f7e6eed5 | 5287 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5288 | remote_query_supported_append (&q, "swbreak+"); |
f7e6eed5 | 5289 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5290 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5291 | |
69b6ecb0 | 5292 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5293 | |
8020350c DB |
5294 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
5295 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5296 | remote_query_supported_append (&q, "fork-events+"); |
8020350c DB |
5297 | if (packet_set_cmd_state (PACKET_vfork_event_feature) |
5298 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5299 | remote_query_supported_append (&q, "vfork-events+"); |
8020350c DB |
5300 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
5301 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5302 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5303 | |
750ce8d1 | 5304 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5305 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5306 | |
65706a29 | 5307 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5308 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5309 | |
f2faf941 | 5310 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5311 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5312 | |
b35d5edb PA |
5313 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5314 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5315 | if (remote_support_xml != NULL |
5316 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
69b6ecb0 | 5317 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5318 | |
69b6ecb0 TT |
5319 | q = "qSupported:" + q; |
5320 | putpkt (q.c_str ()); | |
94b0dee1 | 5321 | |
8d64371b | 5322 | getpkt (&rs->buf, 0); |
be2a5f71 DJ |
5323 | |
5324 | /* If an error occured, warn, but do not return - just reset the | |
5325 | buffer to empty and go on to disable features. */ | |
5326 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5327 | == PACKET_ERROR) | |
5328 | { | |
8d64371b | 5329 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
be2a5f71 DJ |
5330 | rs->buf[0] = 0; |
5331 | } | |
5332 | } | |
5333 | ||
5334 | memset (seen, 0, sizeof (seen)); | |
5335 | ||
8d64371b | 5336 | next = rs->buf.data (); |
be2a5f71 DJ |
5337 | while (*next) |
5338 | { | |
5339 | enum packet_support is_supported; | |
5340 | char *p, *end, *name_end, *value; | |
5341 | ||
5342 | /* First separate out this item from the rest of the packet. If | |
5343 | there's another item after this, we overwrite the separator | |
5344 | (terminated strings are much easier to work with). */ | |
5345 | p = next; | |
5346 | end = strchr (p, ';'); | |
5347 | if (end == NULL) | |
5348 | { | |
5349 | end = p + strlen (p); | |
5350 | next = end; | |
5351 | } | |
5352 | else | |
5353 | { | |
89be2091 DJ |
5354 | *end = '\0'; |
5355 | next = end + 1; | |
5356 | ||
be2a5f71 DJ |
5357 | if (end == p) |
5358 | { | |
5359 | warning (_("empty item in \"qSupported\" response")); | |
5360 | continue; | |
5361 | } | |
be2a5f71 DJ |
5362 | } |
5363 | ||
5364 | name_end = strchr (p, '='); | |
5365 | if (name_end) | |
5366 | { | |
5367 | /* This is a name=value entry. */ | |
5368 | is_supported = PACKET_ENABLE; | |
5369 | value = name_end + 1; | |
5370 | *name_end = '\0'; | |
5371 | } | |
5372 | else | |
5373 | { | |
5374 | value = NULL; | |
5375 | switch (end[-1]) | |
5376 | { | |
5377 | case '+': | |
5378 | is_supported = PACKET_ENABLE; | |
5379 | break; | |
5380 | ||
5381 | case '-': | |
5382 | is_supported = PACKET_DISABLE; | |
5383 | break; | |
5384 | ||
5385 | case '?': | |
5386 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5387 | break; | |
5388 | ||
5389 | default: | |
3e43a32a MS |
5390 | warning (_("unrecognized item \"%s\" " |
5391 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5392 | continue; |
5393 | } | |
5394 | end[-1] = '\0'; | |
5395 | } | |
5396 | ||
5397 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5398 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5399 | { | |
5400 | const struct protocol_feature *feature; | |
5401 | ||
5402 | seen[i] = 1; | |
5403 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5404 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5405 | break; |
5406 | } | |
5407 | } | |
5408 | ||
5409 | /* If we increased the packet size, make sure to increase the global | |
5410 | buffer size also. We delay this until after parsing the entire | |
5411 | qSupported packet, because this is the same buffer we were | |
5412 | parsing. */ | |
8d64371b TT |
5413 | if (rs->buf.size () < rs->explicit_packet_size) |
5414 | rs->buf.resize (rs->explicit_packet_size); | |
be2a5f71 DJ |
5415 | |
5416 | /* Handle the defaults for unmentioned features. */ | |
5417 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5418 | if (!seen[i]) | |
5419 | { | |
5420 | const struct protocol_feature *feature; | |
5421 | ||
5422 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5423 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5424 | } |
5425 | } | |
5426 | ||
048094ac PA |
5427 | /* Serial QUIT handler for the remote serial descriptor. |
5428 | ||
5429 | Defers handling a Ctrl-C until we're done with the current | |
5430 | command/response packet sequence, unless: | |
5431 | ||
5432 | - We're setting up the connection. Don't send a remote interrupt | |
5433 | request, as we're not fully synced yet. Quit immediately | |
5434 | instead. | |
5435 | ||
5436 | - The target has been resumed in the foreground | |
223ffa71 | 5437 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5438 | packet, and we're blocked waiting for the stop reply, thus a |
5439 | Ctrl-C should be immediately sent to the target. | |
5440 | ||
5441 | - We get a second Ctrl-C while still within the same serial read or | |
5442 | write. In that case the serial is seemingly wedged --- offer to | |
5443 | quit/disconnect. | |
5444 | ||
5445 | - We see a second Ctrl-C without target response, after having | |
5446 | previously interrupted the target. In that case the target/stub | |
5447 | is probably wedged --- offer to quit/disconnect. | |
5448 | */ | |
5449 | ||
6b8edb51 PA |
5450 | void |
5451 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5452 | { |
5453 | struct remote_state *rs = get_remote_state (); | |
5454 | ||
5455 | if (check_quit_flag ()) | |
5456 | { | |
5457 | /* If we're starting up, we're not fully synced yet. Quit | |
5458 | immediately. */ | |
5459 | if (rs->starting_up) | |
5460 | quit (); | |
5461 | else if (rs->got_ctrlc_during_io) | |
5462 | { | |
5463 | if (query (_("The target is not responding to GDB commands.\n" | |
5464 | "Stop debugging it? "))) | |
5b6d1e4f | 5465 | remote_unpush_and_throw (this); |
048094ac PA |
5466 | } |
5467 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5468 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5469 | interrupt_query (); |
5470 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5471 | an interrupt request. */ | |
223ffa71 | 5472 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5473 | target_interrupt (); |
048094ac PA |
5474 | else |
5475 | rs->got_ctrlc_during_io = 1; | |
5476 | } | |
5477 | } | |
5478 | ||
6b8edb51 PA |
5479 | /* The remote_target that is current while the quit handler is |
5480 | overridden with remote_serial_quit_handler. */ | |
5481 | static remote_target *curr_quit_handler_target; | |
5482 | ||
5483 | static void | |
5484 | remote_serial_quit_handler () | |
5485 | { | |
5486 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5487 | } | |
5488 | ||
5b6d1e4f PA |
5489 | /* Remove the remote target from the target stack of each inferior |
5490 | that is using it. Upper targets depend on it so remove them | |
5491 | first. */ | |
78a095c3 JK |
5492 | |
5493 | static void | |
5b6d1e4f | 5494 | remote_unpush_target (remote_target *target) |
78a095c3 | 5495 | { |
5b6d1e4f PA |
5496 | /* We have to unpush the target from all inferiors, even those that |
5497 | aren't running. */ | |
5498 | scoped_restore_current_inferior restore_current_inferior; | |
5499 | ||
5500 | for (inferior *inf : all_inferiors (target)) | |
5501 | { | |
5502 | switch_to_inferior_no_thread (inf); | |
5503 | pop_all_targets_at_and_above (process_stratum); | |
5504 | generic_mourn_inferior (); | |
5505 | } | |
78a095c3 | 5506 | } |
be2a5f71 | 5507 | |
048094ac | 5508 | static void |
5b6d1e4f | 5509 | remote_unpush_and_throw (remote_target *target) |
048094ac | 5510 | { |
5b6d1e4f | 5511 | remote_unpush_target (target); |
048094ac PA |
5512 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
5513 | } | |
5514 | ||
f6ac5f3d PA |
5515 | void |
5516 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5517 | { |
6b8edb51 | 5518 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5519 | |
c906108c | 5520 | if (name == 0) |
8a3fe4f8 | 5521 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5522 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5523 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5524 | |
2d717e4f | 5525 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5526 | Ask this question first, before target_preopen has a chance to kill |
5527 | anything. */ | |
5b6d1e4f | 5528 | if (curr_remote != NULL && !target_has_execution) |
2d717e4f | 5529 | { |
78a095c3 JK |
5530 | if (from_tty |
5531 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5532 | error (_("Still connected.")); |
5533 | } | |
5534 | ||
78a095c3 | 5535 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5536 | target_preopen (from_tty); |
5537 | ||
ad9a8f3f | 5538 | remote_fileio_reset (); |
1dd41f16 NS |
5539 | reopen_exec_file (); |
5540 | reread_symbols (); | |
5541 | ||
6b8edb51 PA |
5542 | remote_target *remote |
5543 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5544 | target_ops_up target_holder (remote); | |
5545 | ||
5546 | remote_state *rs = remote->get_remote_state (); | |
5547 | ||
5548 | /* See FIXME above. */ | |
5549 | if (!target_async_permitted) | |
5550 | rs->wait_forever_enabled_p = 1; | |
5551 | ||
5d93a237 TT |
5552 | rs->remote_desc = remote_serial_open (name); |
5553 | if (!rs->remote_desc) | |
c906108c SS |
5554 | perror_with_name (name); |
5555 | ||
5556 | if (baud_rate != -1) | |
5557 | { | |
5d93a237 | 5558 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5559 | { |
9b74d5d3 KB |
5560 | /* The requested speed could not be set. Error out to |
5561 | top level after closing remote_desc. Take care to | |
5562 | set remote_desc to NULL to avoid closing remote_desc | |
5563 | more than once. */ | |
5d93a237 TT |
5564 | serial_close (rs->remote_desc); |
5565 | rs->remote_desc = NULL; | |
c906108c SS |
5566 | perror_with_name (name); |
5567 | } | |
5568 | } | |
5569 | ||
236af5e3 | 5570 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5571 | serial_raw (rs->remote_desc); |
c906108c SS |
5572 | |
5573 | /* If there is something sitting in the buffer we might take it as a | |
5574 | response to a command, which would be bad. */ | |
5d93a237 | 5575 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5576 | |
5577 | if (from_tty) | |
5578 | { | |
5579 | puts_filtered ("Remote debugging using "); | |
5580 | puts_filtered (name); | |
5581 | puts_filtered ("\n"); | |
5582 | } | |
d9f719f1 | 5583 | |
6b8edb51 | 5584 | /* Switch to using the remote target now. */ |
dea57a62 | 5585 | push_target (std::move (target_holder)); |
c906108c | 5586 | |
74531fed | 5587 | /* Register extra event sources in the event loop. */ |
6b8edb51 | 5588 | rs->remote_async_inferior_event_token |
74531fed | 5589 | = create_async_event_handler (remote_async_inferior_event_handler, |
6b8edb51 PA |
5590 | remote); |
5591 | rs->notif_state = remote_notif_state_allocate (remote); | |
74531fed | 5592 | |
be2a5f71 DJ |
5593 | /* Reset the target state; these things will be queried either by |
5594 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5595 | reset_all_packet_configs_support (); |
74531fed | 5596 | rs->cached_wait_status = 0; |
be2a5f71 | 5597 | rs->explicit_packet_size = 0; |
a6f3e723 | 5598 | rs->noack_mode = 0; |
82f73884 | 5599 | rs->extended = extended_p; |
e24a49d8 | 5600 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5601 | rs->ctrlc_pending_p = 0; |
048094ac | 5602 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5603 | |
47f8a51d TT |
5604 | rs->general_thread = not_sent_ptid; |
5605 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5606 | rs->remote_traceframe_number = -1; |
c906108c | 5607 | |
3a00c802 PA |
5608 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5609 | ||
9d1f7ab2 | 5610 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5611 | rs->use_threadinfo_query = 1; |
5612 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5613 | |
dd194f6b | 5614 | rs->readahead_cache.invalidate (); |
80152258 | 5615 | |
c6ebd6cf | 5616 | if (target_async_permitted) |
92d1e331 | 5617 | { |
92d1e331 DJ |
5618 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5619 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5620 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5621 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5622 | around this. Eventually a mechanism that allows |
92d1e331 | 5623 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5624 | implemented. */ |
6b8edb51 | 5625 | rs->wait_forever_enabled_p = 0; |
92d1e331 DJ |
5626 | } |
5627 | ||
23860348 | 5628 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5629 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5630 | |
36918e70 | 5631 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5632 | target (we'd otherwise be in an inconsistent state) and then |
5633 | propogate the error on up the exception chain. This ensures that | |
5634 | the caller doesn't stumble along blindly assuming that the | |
5635 | function succeeded. The CLI doesn't have this problem but other | |
5636 | UI's, such as MI do. | |
36918e70 AC |
5637 | |
5638 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5639 | this function should return an error indication letting the | |
ce2826aa | 5640 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5641 | ``target remote'' is directly wired to this function making that |
5642 | impossible. On a positive note, the CLI side of this problem has | |
5643 | been fixed - the function set_cmd_context() makes it possible for | |
5644 | all the ``target ....'' commands to share a common callback | |
5645 | function. See cli-dump.c. */ | |
109c3e39 | 5646 | { |
2d717e4f | 5647 | |
a70b8144 | 5648 | try |
04bd08de | 5649 | { |
6b8edb51 | 5650 | remote->start_remote (from_tty, extended_p); |
04bd08de | 5651 | } |
230d2906 | 5652 | catch (const gdb_exception &ex) |
109c3e39 | 5653 | { |
c8d104ad PA |
5654 | /* Pop the partially set up target - unless something else did |
5655 | already before throwing the exception. */ | |
6b8edb51 | 5656 | if (ex.error != TARGET_CLOSE_ERROR) |
5b6d1e4f | 5657 | remote_unpush_target (remote); |
eedc3f4f | 5658 | throw; |
109c3e39 AC |
5659 | } |
5660 | } | |
c906108c | 5661 | |
6b8edb51 | 5662 | remote_btrace_reset (rs); |
f4abbc16 | 5663 | |
c6ebd6cf | 5664 | if (target_async_permitted) |
6b8edb51 | 5665 | rs->wait_forever_enabled_p = 1; |
43ff13b4 JM |
5666 | } |
5667 | ||
de0d863e DB |
5668 | /* Detach the specified process. */ |
5669 | ||
6b8edb51 PA |
5670 | void |
5671 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
5672 | { |
5673 | struct remote_state *rs = get_remote_state (); | |
5674 | ||
4c7333b3 PA |
5675 | /* This should not be necessary, but the handling for D;PID in |
5676 | GDBserver versions prior to 8.2 incorrectly assumes that the | |
5677 | selected process points to the same process we're detaching, | |
5678 | leading to misbehavior (and possibly GDBserver crashing) when it | |
5679 | does not. Since it's easy and cheap, work around it by forcing | |
5680 | GDBserver to select GDB's current process. */ | |
5681 | set_general_process (); | |
5682 | ||
de0d863e | 5683 | if (remote_multi_process_p (rs)) |
8d64371b | 5684 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "D;%x", pid); |
de0d863e | 5685 | else |
8d64371b | 5686 | strcpy (rs->buf.data (), "D"); |
de0d863e DB |
5687 | |
5688 | putpkt (rs->buf); | |
8d64371b | 5689 | getpkt (&rs->buf, 0); |
de0d863e DB |
5690 | |
5691 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5692 | ; | |
5693 | else if (rs->buf[0] == '\0') | |
5694 | error (_("Remote doesn't know how to detach")); | |
5695 | else | |
5696 | error (_("Can't detach process.")); | |
5697 | } | |
5698 | ||
5699 | /* This detaches a program to which we previously attached, using | |
5700 | inferior_ptid to identify the process. After this is done, GDB | |
5701 | can be used to debug some other program. We better not have left | |
5702 | any breakpoints in the target program or it'll die when it hits | |
5703 | one. */ | |
c906108c | 5704 | |
6b8edb51 | 5705 | void |
00431a78 | 5706 | remote_target::remote_detach_1 (inferior *inf, int from_tty) |
c906108c | 5707 | { |
e99b03dc | 5708 | int pid = inferior_ptid.pid (); |
d01949b6 | 5709 | struct remote_state *rs = get_remote_state (); |
de0d863e | 5710 | int is_fork_parent; |
c906108c | 5711 | |
2d717e4f DJ |
5712 | if (!target_has_execution) |
5713 | error (_("No process to detach from.")); | |
5714 | ||
0f48b757 | 5715 | target_announce_detach (from_tty); |
7cee1e54 | 5716 | |
c906108c | 5717 | /* Tell the remote target to detach. */ |
de0d863e | 5718 | remote_detach_pid (pid); |
82f73884 | 5719 | |
8020350c | 5720 | /* Exit only if this is the only active inferior. */ |
5b6d1e4f | 5721 | if (from_tty && !rs->extended && number_of_live_inferiors (this) == 1) |
7cee1e54 | 5722 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5723 | |
5b6d1e4f | 5724 | thread_info *tp = find_thread_ptid (this, inferior_ptid); |
00431a78 | 5725 | |
de0d863e DB |
5726 | /* Check to see if we are detaching a fork parent. Note that if we |
5727 | are detaching a fork child, tp == NULL. */ | |
5728 | is_fork_parent = (tp != NULL | |
5729 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5730 | ||
5731 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5732 | breakpoints that should be available for the followed inferior. */ | |
5733 | if (!is_fork_parent) | |
f67c0c91 | 5734 | { |
249b5733 PA |
5735 | /* Save the pid as a string before mourning, since that will |
5736 | unpush the remote target, and we need the string after. */ | |
f2907e49 | 5737 | std::string infpid = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
5738 | |
5739 | target_mourn_inferior (inferior_ptid); | |
5740 | if (print_inferior_events) | |
5741 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
5742 | inf->num, infpid.c_str ()); | |
5743 | } | |
de0d863e DB |
5744 | else |
5745 | { | |
5746 | inferior_ptid = null_ptid; | |
00431a78 | 5747 | detach_inferior (current_inferior ()); |
de0d863e | 5748 | } |
2d717e4f DJ |
5749 | } |
5750 | ||
f6ac5f3d PA |
5751 | void |
5752 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5753 | { |
00431a78 | 5754 | remote_detach_1 (inf, from_tty); |
2d717e4f DJ |
5755 | } |
5756 | ||
f6ac5f3d PA |
5757 | void |
5758 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5759 | { |
00431a78 | 5760 | remote_detach_1 (inf, from_tty); |
de0d863e DB |
5761 | } |
5762 | ||
5763 | /* Target follow-fork function for remote targets. On entry, and | |
5764 | at return, the current inferior is the fork parent. | |
5765 | ||
5766 | Note that although this is currently only used for extended-remote, | |
5767 | it is named remote_follow_fork in anticipation of using it for the | |
5768 | remote target as well. */ | |
5769 | ||
5ab2fbf1 SM |
5770 | bool |
5771 | remote_target::follow_fork (bool follow_child, bool detach_fork) | |
de0d863e DB |
5772 | { |
5773 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5774 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5775 | |
c269dbdb DB |
5776 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5777 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5778 | { |
5779 | /* When following the parent and detaching the child, we detach | |
5780 | the child here. For the case of following the child and | |
5781 | detaching the parent, the detach is done in the target- | |
5782 | independent follow fork code in infrun.c. We can't use | |
5783 | target_detach when detaching an unfollowed child because | |
5784 | the client side doesn't know anything about the child. */ | |
5785 | if (detach_fork && !follow_child) | |
5786 | { | |
5787 | /* Detach the fork child. */ | |
5788 | ptid_t child_ptid; | |
5789 | pid_t child_pid; | |
5790 | ||
5791 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
e99b03dc | 5792 | child_pid = child_ptid.pid (); |
de0d863e DB |
5793 | |
5794 | remote_detach_pid (child_pid); | |
de0d863e DB |
5795 | } |
5796 | } | |
5ab2fbf1 SM |
5797 | |
5798 | return false; | |
c906108c SS |
5799 | } |
5800 | ||
94585166 DB |
5801 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5802 | in the program space of the new inferior. On entry and at return the | |
5803 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5804 | inferior, which may be the same as the exec'ing inferior unless | |
5805 | follow-exec-mode is "new". */ | |
5806 | ||
f6ac5f3d | 5807 | void |
4ca51187 | 5808 | remote_target::follow_exec (struct inferior *inf, const char *execd_pathname) |
94585166 DB |
5809 | { |
5810 | /* We know that this is a target file name, so if it has the "target:" | |
5811 | prefix we strip it off before saving it in the program space. */ | |
5812 | if (is_target_filename (execd_pathname)) | |
5813 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5814 | ||
5815 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5816 | } | |
5817 | ||
6ad8ae5c DJ |
5818 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5819 | ||
f6ac5f3d PA |
5820 | void |
5821 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 5822 | { |
43ff13b4 | 5823 | if (args) |
2d717e4f | 5824 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5825 | |
8020350c | 5826 | /* Make sure we unpush even the extended remote targets. Calling |
5b6d1e4f PA |
5827 | target_mourn_inferior won't unpush, and |
5828 | remote_target::mourn_inferior won't unpush if there is more than | |
5829 | one inferior left. */ | |
5830 | remote_unpush_target (this); | |
2d717e4f | 5831 | |
43ff13b4 JM |
5832 | if (from_tty) |
5833 | puts_filtered ("Ending remote debugging.\n"); | |
5834 | } | |
5835 | ||
2d717e4f DJ |
5836 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5837 | be chatty about it. */ | |
5838 | ||
f6ac5f3d PA |
5839 | void |
5840 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
5841 | { |
5842 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5843 | int pid; |
96ef3384 | 5844 | char *wait_status = NULL; |
2d717e4f | 5845 | |
74164c56 | 5846 | pid = parse_pid_to_attach (args); |
2d717e4f | 5847 | |
74164c56 JK |
5848 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5849 | way as in other targets. */ | |
2d717e4f | 5850 | |
4082afcc | 5851 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5852 | error (_("This target does not support attaching to a process")); |
5853 | ||
7cee1e54 PA |
5854 | if (from_tty) |
5855 | { | |
d9fa87f4 | 5856 | const char *exec_file = get_exec_file (0); |
7cee1e54 PA |
5857 | |
5858 | if (exec_file) | |
5859 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
a068643d | 5860 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
5861 | else |
5862 | printf_unfiltered (_("Attaching to %s\n"), | |
a068643d | 5863 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
5864 | } |
5865 | ||
8d64371b | 5866 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f | 5867 | putpkt (rs->buf); |
8d64371b | 5868 | getpkt (&rs->buf, 0); |
2d717e4f | 5869 | |
4082afcc PA |
5870 | switch (packet_ok (rs->buf, |
5871 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5872 | { |
4082afcc | 5873 | case PACKET_OK: |
6efcd9a8 | 5874 | if (!target_is_non_stop_p ()) |
74531fed PA |
5875 | { |
5876 | /* Save the reply for later. */ | |
8d64371b TT |
5877 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
5878 | strcpy (wait_status, rs->buf.data ()); | |
74531fed | 5879 | } |
8d64371b | 5880 | else if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 5881 | error (_("Attaching to %s failed with: %s"), |
a068643d | 5882 | target_pid_to_str (ptid_t (pid)).c_str (), |
8d64371b | 5883 | rs->buf.data ()); |
4082afcc PA |
5884 | break; |
5885 | case PACKET_UNKNOWN: | |
5886 | error (_("This target does not support attaching to a process")); | |
5887 | default: | |
50fa3001 SDJ |
5888 | error (_("Attaching to %s failed"), |
5889 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
2d717e4f | 5890 | } |
2d717e4f | 5891 | |
9ab8741a | 5892 | set_current_inferior (remote_add_inferior (false, pid, 1, 0)); |
bad34192 | 5893 | |
f2907e49 | 5894 | inferior_ptid = ptid_t (pid); |
79d7f229 | 5895 | |
6efcd9a8 | 5896 | if (target_is_non_stop_p ()) |
bad34192 PA |
5897 | { |
5898 | struct thread_info *thread; | |
79d7f229 | 5899 | |
bad34192 | 5900 | /* Get list of threads. */ |
f6ac5f3d | 5901 | update_thread_list (); |
82f73884 | 5902 | |
00431a78 | 5903 | thread = first_thread_of_inferior (current_inferior ()); |
bad34192 PA |
5904 | if (thread) |
5905 | inferior_ptid = thread->ptid; | |
5906 | else | |
f2907e49 | 5907 | inferior_ptid = ptid_t (pid); |
bad34192 PA |
5908 | |
5909 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5910 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5911 | } |
74531fed | 5912 | else |
bad34192 PA |
5913 | { |
5914 | /* Now, if we have thread information, update inferior_ptid. */ | |
5915 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5916 | ||
5917 | /* Add the main thread to the thread list. */ | |
5b6d1e4f | 5918 | thread_info *thr = add_thread_silent (this, inferior_ptid); |
00aecdcf PA |
5919 | /* Don't consider the thread stopped until we've processed the |
5920 | saved stop reply. */ | |
5b6d1e4f | 5921 | set_executing (this, thr->ptid, true); |
bad34192 | 5922 | } |
c0a2216e | 5923 | |
96ef3384 UW |
5924 | /* Next, if the target can specify a description, read it. We do |
5925 | this before anything involving memory or registers. */ | |
5926 | target_find_description (); | |
5927 | ||
6efcd9a8 | 5928 | if (!target_is_non_stop_p ()) |
74531fed PA |
5929 | { |
5930 | /* Use the previously fetched status. */ | |
5931 | gdb_assert (wait_status != NULL); | |
5932 | ||
5933 | if (target_can_async_p ()) | |
5934 | { | |
722247f1 | 5935 | struct notif_event *reply |
6b8edb51 | 5936 | = remote_notif_parse (this, ¬if_client_stop, wait_status); |
74531fed | 5937 | |
722247f1 | 5938 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5939 | |
6a3753b3 | 5940 | target_async (1); |
74531fed PA |
5941 | } |
5942 | else | |
5943 | { | |
5944 | gdb_assert (wait_status != NULL); | |
8d64371b | 5945 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
5946 | rs->cached_wait_status = 1; |
5947 | } | |
5948 | } | |
5949 | else | |
5950 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5951 | } |
5952 | ||
b9c1d481 AS |
5953 | /* Implementation of the to_post_attach method. */ |
5954 | ||
f6ac5f3d PA |
5955 | void |
5956 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 5957 | { |
6efcd9a8 PA |
5958 | /* Get text, data & bss offsets. */ |
5959 | get_offsets (); | |
5960 | ||
b9c1d481 AS |
5961 | /* In certain cases GDB might not have had the chance to start |
5962 | symbol lookup up until now. This could happen if the debugged | |
5963 | binary is not using shared libraries, the vsyscall page is not | |
5964 | present (on Linux) and the binary itself hadn't changed since the | |
5965 | debugging process was started. */ | |
5966 | if (symfile_objfile != NULL) | |
5967 | remote_check_symbols(); | |
5968 | } | |
5969 | ||
c906108c | 5970 | \f |
506fb367 DJ |
5971 | /* Check for the availability of vCont. This function should also check |
5972 | the response. */ | |
c906108c | 5973 | |
6b8edb51 PA |
5974 | void |
5975 | remote_target::remote_vcont_probe () | |
c906108c | 5976 | { |
6b8edb51 | 5977 | remote_state *rs = get_remote_state (); |
2e9f7625 | 5978 | char *buf; |
6d820c5c | 5979 | |
8d64371b | 5980 | strcpy (rs->buf.data (), "vCont?"); |
2e9f7625 | 5981 | putpkt (rs->buf); |
8d64371b TT |
5982 | getpkt (&rs->buf, 0); |
5983 | buf = rs->buf.data (); | |
c906108c | 5984 | |
506fb367 | 5985 | /* Make sure that the features we assume are supported. */ |
61012eef | 5986 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5987 | { |
5988 | char *p = &buf[5]; | |
750ce8d1 | 5989 | int support_c, support_C; |
506fb367 | 5990 | |
750ce8d1 YQ |
5991 | rs->supports_vCont.s = 0; |
5992 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5993 | support_c = 0; |
5994 | support_C = 0; | |
d458bd84 | 5995 | rs->supports_vCont.t = 0; |
c1e36e3e | 5996 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5997 | while (p && *p == ';') |
5998 | { | |
5999 | p++; | |
6000 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 6001 | rs->supports_vCont.s = 1; |
506fb367 | 6002 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 6003 | rs->supports_vCont.S = 1; |
506fb367 DJ |
6004 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6005 | support_c = 1; | |
6006 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
6007 | support_C = 1; | |
74531fed | 6008 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 6009 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
6010 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6011 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
6012 | |
6013 | p = strchr (p, ';'); | |
6014 | } | |
c906108c | 6015 | |
750ce8d1 YQ |
6016 | /* If c, and C are not all supported, we can't use vCont. Clearing |
6017 | BUF will make packet_ok disable the packet. */ | |
6018 | if (!support_c || !support_C) | |
506fb367 DJ |
6019 | buf[0] = 0; |
6020 | } | |
c906108c | 6021 | |
8d64371b | 6022 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCont]); |
5b6d1e4f | 6023 | rs->supports_vCont_probed = true; |
506fb367 | 6024 | } |
c906108c | 6025 | |
0d8f58ca PA |
6026 | /* Helper function for building "vCont" resumptions. Write a |
6027 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
6028 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
6029 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
6030 | resumed thread should be single-stepped and/or signalled. If PTID | |
6031 | equals minus_one_ptid, then all threads are resumed; if PTID | |
6032 | represents a process, then all threads of the process are resumed; | |
6033 | the thread to be stepped and/or signalled is given in the global | |
6034 | INFERIOR_PTID. */ | |
6035 | ||
6b8edb51 PA |
6036 | char * |
6037 | remote_target::append_resumption (char *p, char *endp, | |
6038 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
6039 | { |
6040 | struct remote_state *rs = get_remote_state (); | |
6041 | ||
a493e3e2 | 6042 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 6043 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
6044 | else if (step |
6045 | /* GDB is willing to range step. */ | |
6046 | && use_range_stepping | |
6047 | /* Target supports range stepping. */ | |
6048 | && rs->supports_vCont.r | |
6049 | /* We don't currently support range stepping multiple | |
6050 | threads with a wildcard (though the protocol allows it, | |
6051 | so stubs shouldn't make an active effort to forbid | |
6052 | it). */ | |
0e998d96 | 6053 | && !(remote_multi_process_p (rs) && ptid.is_pid ())) |
c1e36e3e PA |
6054 | { |
6055 | struct thread_info *tp; | |
6056 | ||
d7e15655 | 6057 | if (ptid == minus_one_ptid) |
c1e36e3e PA |
6058 | { |
6059 | /* If we don't know about the target thread's tid, then | |
6060 | we're resuming magic_null_ptid (see caller). */ | |
5b6d1e4f | 6061 | tp = find_thread_ptid (this, magic_null_ptid); |
c1e36e3e PA |
6062 | } |
6063 | else | |
5b6d1e4f | 6064 | tp = find_thread_ptid (this, ptid); |
c1e36e3e PA |
6065 | gdb_assert (tp != NULL); |
6066 | ||
6067 | if (tp->control.may_range_step) | |
6068 | { | |
6069 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
6070 | ||
6071 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6072 | phex_nz (tp->control.step_range_start, | |
6073 | addr_size), | |
6074 | phex_nz (tp->control.step_range_end, | |
6075 | addr_size)); | |
6076 | } | |
6077 | else | |
6078 | p += xsnprintf (p, endp - p, ";s"); | |
6079 | } | |
0d8f58ca PA |
6080 | else if (step) |
6081 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6082 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6083 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6084 | else | |
6085 | p += xsnprintf (p, endp - p, ";c"); | |
6086 | ||
0e998d96 | 6087 | if (remote_multi_process_p (rs) && ptid.is_pid ()) |
0d8f58ca PA |
6088 | { |
6089 | ptid_t nptid; | |
6090 | ||
6091 | /* All (-1) threads of process. */ | |
e99b03dc | 6092 | nptid = ptid_t (ptid.pid (), -1, 0); |
0d8f58ca PA |
6093 | |
6094 | p += xsnprintf (p, endp - p, ":"); | |
6095 | p = write_ptid (p, endp, nptid); | |
6096 | } | |
d7e15655 | 6097 | else if (ptid != minus_one_ptid) |
0d8f58ca PA |
6098 | { |
6099 | p += xsnprintf (p, endp - p, ":"); | |
6100 | p = write_ptid (p, endp, ptid); | |
6101 | } | |
6102 | ||
6103 | return p; | |
6104 | } | |
6105 | ||
799a2abe PA |
6106 | /* Clear the thread's private info on resume. */ |
6107 | ||
6108 | static void | |
6109 | resume_clear_thread_private_info (struct thread_info *thread) | |
6110 | { | |
6111 | if (thread->priv != NULL) | |
6112 | { | |
7aabaf9d SM |
6113 | remote_thread_info *priv = get_remote_thread_info (thread); |
6114 | ||
6115 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6116 | priv->watch_data_address = 0; | |
799a2abe PA |
6117 | } |
6118 | } | |
6119 | ||
e5ef252a PA |
6120 | /* Append a vCont continue-with-signal action for threads that have a |
6121 | non-zero stop signal. */ | |
6122 | ||
6b8edb51 PA |
6123 | char * |
6124 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6125 | ptid_t ptid) | |
e5ef252a | 6126 | { |
5b6d1e4f | 6127 | for (thread_info *thread : all_non_exited_threads (this, ptid)) |
08036331 | 6128 | if (inferior_ptid != thread->ptid |
70509625 | 6129 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
6130 | { |
6131 | p = append_resumption (p, endp, thread->ptid, | |
6132 | 0, thread->suspend.stop_signal); | |
6133 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 6134 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6135 | } |
6136 | ||
6137 | return p; | |
6138 | } | |
6139 | ||
7b68ffbb PA |
6140 | /* Set the target running, using the packets that use Hc |
6141 | (c/s/C/S). */ | |
6142 | ||
6b8edb51 PA |
6143 | void |
6144 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6145 | gdb_signal siggnal) | |
7b68ffbb PA |
6146 | { |
6147 | struct remote_state *rs = get_remote_state (); | |
7b68ffbb PA |
6148 | char *buf; |
6149 | ||
6150 | rs->last_sent_signal = siggnal; | |
6151 | rs->last_sent_step = step; | |
6152 | ||
6153 | /* The c/s/C/S resume packets use Hc, so set the continue | |
6154 | thread. */ | |
d7e15655 | 6155 | if (ptid == minus_one_ptid) |
7b68ffbb PA |
6156 | set_continue_thread (any_thread_ptid); |
6157 | else | |
6158 | set_continue_thread (ptid); | |
6159 | ||
5b6d1e4f | 6160 | for (thread_info *thread : all_non_exited_threads (this)) |
7b68ffbb PA |
6161 | resume_clear_thread_private_info (thread); |
6162 | ||
8d64371b | 6163 | buf = rs->buf.data (); |
6b8edb51 | 6164 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6165 | { |
6166 | /* We don't pass signals to the target in reverse exec mode. */ | |
6167 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
6168 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
6169 | siggnal); | |
6170 | ||
6171 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
6172 | error (_("Remote reverse-step not supported.")); | |
6173 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
6174 | error (_("Remote reverse-continue not supported.")); | |
6175 | ||
6176 | strcpy (buf, step ? "bs" : "bc"); | |
6177 | } | |
6178 | else if (siggnal != GDB_SIGNAL_0) | |
6179 | { | |
6180 | buf[0] = step ? 'S' : 'C'; | |
6181 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
6182 | buf[2] = tohex (((int) siggnal) & 0xf); | |
6183 | buf[3] = '\0'; | |
6184 | } | |
6185 | else | |
6186 | strcpy (buf, step ? "s" : "c"); | |
6187 | ||
6188 | putpkt (buf); | |
6189 | } | |
6190 | ||
506fb367 DJ |
6191 | /* Resume the remote inferior by using a "vCont" packet. The thread |
6192 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
6193 | resumed thread should be single-stepped and/or signalled. If PTID |
6194 | equals minus_one_ptid, then all threads are resumed; the thread to | |
6195 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
6196 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 6197 | |
7b68ffbb PA |
6198 | This function issues a strict subset of all possible vCont commands |
6199 | at the moment. */ | |
44eaed12 | 6200 | |
6b8edb51 PA |
6201 | int |
6202 | remote_target::remote_resume_with_vcont (ptid_t ptid, int step, | |
6203 | enum gdb_signal siggnal) | |
506fb367 DJ |
6204 | { |
6205 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
6206 | char *p; |
6207 | char *endp; | |
44eaed12 | 6208 | |
7b68ffbb | 6209 | /* No reverse execution actions defined for vCont. */ |
6b8edb51 | 6210 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6211 | return 0; |
6212 | ||
4082afcc | 6213 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6214 | remote_vcont_probe (); |
44eaed12 | 6215 | |
4082afcc | 6216 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 6217 | return 0; |
44eaed12 | 6218 | |
8d64371b TT |
6219 | p = rs->buf.data (); |
6220 | endp = p + get_remote_packet_size (); | |
82f73884 | 6221 | |
506fb367 DJ |
6222 | /* If we could generate a wider range of packets, we'd have to worry |
6223 | about overflowing BUF. Should there be a generic | |
6224 | "multi-part-packet" packet? */ | |
6225 | ||
0d8f58ca PA |
6226 | p += xsnprintf (p, endp - p, "vCont"); |
6227 | ||
d7e15655 | 6228 | if (ptid == magic_null_ptid) |
c906108c | 6229 | { |
79d7f229 PA |
6230 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
6231 | so we don't have any TID numbers the inferior will | |
6232 | understand. Make sure to only send forms that do not specify | |
6233 | a TID. */ | |
a9cbf802 | 6234 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 6235 | } |
d7e15655 | 6236 | else if (ptid == minus_one_ptid || ptid.is_pid ()) |
506fb367 | 6237 | { |
0d8f58ca PA |
6238 | /* Resume all threads (of all processes, or of a single |
6239 | process), with preference for INFERIOR_PTID. This assumes | |
6240 | inferior_ptid belongs to the set of all threads we are about | |
6241 | to resume. */ | |
a493e3e2 | 6242 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 6243 | { |
0d8f58ca PA |
6244 | /* Step inferior_ptid, with or without signal. */ |
6245 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 6246 | } |
0d8f58ca | 6247 | |
e5ef252a PA |
6248 | /* Also pass down any pending signaled resumption for other |
6249 | threads not the current. */ | |
6250 | p = append_pending_thread_resumptions (p, endp, ptid); | |
6251 | ||
0d8f58ca | 6252 | /* And continue others without a signal. */ |
a493e3e2 | 6253 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
6254 | } |
6255 | else | |
506fb367 DJ |
6256 | { |
6257 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 6258 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 6259 | } |
c906108c | 6260 | |
8d64371b | 6261 | gdb_assert (strlen (rs->buf.data ()) < get_remote_packet_size ()); |
82f73884 | 6262 | putpkt (rs->buf); |
506fb367 | 6263 | |
6efcd9a8 | 6264 | if (target_is_non_stop_p ()) |
74531fed PA |
6265 | { |
6266 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6267 | reply will be reported asynchronously by means of a `%Stop' | |
6268 | notification. */ | |
8d64371b TT |
6269 | getpkt (&rs->buf, 0); |
6270 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6271 | error (_("Unexpected vCont reply in non-stop mode: %s"), | |
6272 | rs->buf.data ()); | |
74531fed PA |
6273 | } |
6274 | ||
506fb367 | 6275 | return 1; |
c906108c | 6276 | } |
43ff13b4 | 6277 | |
506fb367 DJ |
6278 | /* Tell the remote machine to resume. */ |
6279 | ||
f6ac5f3d PA |
6280 | void |
6281 | remote_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal) | |
43ff13b4 | 6282 | { |
d01949b6 | 6283 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6284 | |
85ad3aaf PA |
6285 | /* When connected in non-stop mode, the core resumes threads |
6286 | individually. Resuming remote threads directly in target_resume | |
6287 | would thus result in sending one packet per thread. Instead, to | |
6288 | minimize roundtrip latency, here we just store the resume | |
6289 | request; the actual remote resumption will be done in | |
6290 | target_commit_resume / remote_commit_resume, where we'll be able | |
6291 | to do vCont action coalescing. */ | |
f6ac5f3d | 6292 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6293 | { |
7aabaf9d | 6294 | remote_thread_info *remote_thr; |
85ad3aaf | 6295 | |
d7e15655 | 6296 | if (minus_one_ptid == ptid || ptid.is_pid ()) |
5b6d1e4f | 6297 | remote_thr = get_remote_thread_info (this, inferior_ptid); |
85ad3aaf | 6298 | else |
5b6d1e4f | 6299 | remote_thr = get_remote_thread_info (this, ptid); |
7aabaf9d | 6300 | |
85ad3aaf PA |
6301 | remote_thr->last_resume_step = step; |
6302 | remote_thr->last_resume_sig = siggnal; | |
6303 | return; | |
6304 | } | |
6305 | ||
722247f1 YQ |
6306 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6307 | (explained in remote-notif.c:handle_notification) so | |
6308 | remote_notif_process is not called. We need find a place where | |
6309 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6310 | before resuming inferior, because inferior was stopped and no RSP | |
6311 | traffic at that moment. */ | |
6efcd9a8 | 6312 | if (!target_is_non_stop_p ()) |
5965e028 | 6313 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6314 | |
f6ac5f3d | 6315 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6316 | |
7b68ffbb PA |
6317 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
6318 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
6b8edb51 | 6319 | remote_resume_with_hc (ptid, step, siggnal); |
43ff13b4 | 6320 | |
2acceee2 | 6321 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
6322 | with the event loop. NOTE: this is the one place where all the |
6323 | execution commands end up. We could alternatively do this in each | |
23860348 | 6324 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
6325 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
6326 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 6327 | NOT asynchronously. */ |
362646f5 | 6328 | if (target_can_async_p ()) |
6a3753b3 | 6329 | target_async (1); |
e24a49d8 PA |
6330 | |
6331 | /* We've just told the target to resume. The remote server will | |
6332 | wait for the inferior to stop, and then send a stop reply. In | |
6333 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6334 | because the stub wouldn't be ready to process it. This applies |
6335 | only to the base all-stop protocol, however. In non-stop (which | |
6336 | only supports vCont), the stub replies with an "OK", and is | |
6337 | immediate able to process further serial input. */ | |
6efcd9a8 | 6338 | if (!target_is_non_stop_p ()) |
74531fed | 6339 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6340 | } |
85ad3aaf | 6341 | |
85ad3aaf PA |
6342 | static int is_pending_fork_parent_thread (struct thread_info *thread); |
6343 | ||
6344 | /* Private per-inferior info for target remote processes. */ | |
6345 | ||
089354bb | 6346 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6347 | { |
6348 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6349 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6350 | }; |
6351 | ||
089354bb SM |
6352 | /* Get the remote private inferior data associated to INF. */ |
6353 | ||
6354 | static remote_inferior * | |
6355 | get_remote_inferior (inferior *inf) | |
6356 | { | |
6357 | if (inf->priv == NULL) | |
6358 | inf->priv.reset (new remote_inferior); | |
6359 | ||
6360 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6361 | } | |
6362 | ||
f5db4863 | 6363 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6364 | outgoing packet buffer. This is used to send multiple vCont |
6365 | packets if we have more actions than would fit a single packet. */ | |
6366 | ||
f5db4863 | 6367 | class vcont_builder |
85ad3aaf | 6368 | { |
f5db4863 | 6369 | public: |
6b8edb51 PA |
6370 | explicit vcont_builder (remote_target *remote) |
6371 | : m_remote (remote) | |
f5db4863 PA |
6372 | { |
6373 | restart (); | |
6374 | } | |
6375 | ||
6376 | void flush (); | |
6377 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6378 | ||
6379 | private: | |
6380 | void restart (); | |
6381 | ||
6b8edb51 PA |
6382 | /* The remote target. */ |
6383 | remote_target *m_remote; | |
6384 | ||
85ad3aaf PA |
6385 | /* Pointer to the first action. P points here if no action has been |
6386 | appended yet. */ | |
f5db4863 | 6387 | char *m_first_action; |
85ad3aaf PA |
6388 | |
6389 | /* Where the next action will be appended. */ | |
f5db4863 | 6390 | char *m_p; |
85ad3aaf PA |
6391 | |
6392 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6393 | char *m_endp; |
85ad3aaf PA |
6394 | }; |
6395 | ||
6396 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6397 | ||
f5db4863 PA |
6398 | void |
6399 | vcont_builder::restart () | |
85ad3aaf | 6400 | { |
6b8edb51 | 6401 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6402 | |
8d64371b TT |
6403 | m_p = rs->buf.data (); |
6404 | m_endp = m_p + m_remote->get_remote_packet_size (); | |
f5db4863 PA |
6405 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6406 | m_first_action = m_p; | |
85ad3aaf PA |
6407 | } |
6408 | ||
6409 | /* If the vCont packet being built has any action, send it to the | |
6410 | remote end. */ | |
6411 | ||
f5db4863 PA |
6412 | void |
6413 | vcont_builder::flush () | |
85ad3aaf PA |
6414 | { |
6415 | struct remote_state *rs; | |
6416 | ||
f5db4863 | 6417 | if (m_p == m_first_action) |
85ad3aaf PA |
6418 | return; |
6419 | ||
6b8edb51 PA |
6420 | rs = m_remote->get_remote_state (); |
6421 | m_remote->putpkt (rs->buf); | |
8d64371b TT |
6422 | m_remote->getpkt (&rs->buf, 0); |
6423 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6424 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf.data ()); | |
85ad3aaf PA |
6425 | } |
6426 | ||
6427 | /* The largest action is range-stepping, with its two addresses. This | |
6428 | is more than sufficient. If a new, bigger action is created, it'll | |
6429 | quickly trigger a failed assertion in append_resumption (and we'll | |
6430 | just bump this). */ | |
6431 | #define MAX_ACTION_SIZE 200 | |
6432 | ||
6433 | /* Append a new vCont action in the outgoing packet being built. If | |
6434 | the action doesn't fit the packet along with previous actions, push | |
6435 | what we've got so far to the remote end and start over a new vCont | |
6436 | packet (with the new action). */ | |
6437 | ||
f5db4863 PA |
6438 | void |
6439 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6440 | { |
6441 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6442 | |
6b8edb51 PA |
6443 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6444 | ptid, step, siggnal); | |
85ad3aaf PA |
6445 | |
6446 | /* Check whether this new action would fit in the vCont packet along | |
6447 | with previous actions. If not, send what we've got so far and | |
6448 | start a new vCont packet. */ | |
f5db4863 PA |
6449 | size_t rsize = endp - buf; |
6450 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6451 | { |
f5db4863 PA |
6452 | flush (); |
6453 | restart (); | |
85ad3aaf PA |
6454 | |
6455 | /* Should now fit. */ | |
f5db4863 | 6456 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6457 | } |
6458 | ||
f5db4863 PA |
6459 | memcpy (m_p, buf, rsize); |
6460 | m_p += rsize; | |
6461 | *m_p = '\0'; | |
85ad3aaf PA |
6462 | } |
6463 | ||
6464 | /* to_commit_resume implementation. */ | |
6465 | ||
f6ac5f3d PA |
6466 | void |
6467 | remote_target::commit_resume () | |
85ad3aaf | 6468 | { |
85ad3aaf PA |
6469 | int any_process_wildcard; |
6470 | int may_global_wildcard_vcont; | |
85ad3aaf PA |
6471 | |
6472 | /* If connected in all-stop mode, we'd send the remote resume | |
6473 | request directly from remote_resume. Likewise if | |
6474 | reverse-debugging, as there are no defined vCont actions for | |
6475 | reverse execution. */ | |
f6ac5f3d | 6476 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6477 | return; |
6478 | ||
6479 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6480 | instead of resuming all threads of each process individually. | |
6481 | However, if any thread of a process must remain halted, we can't | |
6482 | send wildcard resumes and must send one action per thread. | |
6483 | ||
6484 | Care must be taken to not resume threads/processes the server | |
6485 | side already told us are stopped, but the core doesn't know about | |
6486 | yet, because the events are still in the vStopped notification | |
6487 | queue. For example: | |
6488 | ||
6489 | #1 => vCont s:p1.1;c | |
6490 | #2 <= OK | |
6491 | #3 <= %Stopped T05 p1.1 | |
6492 | #4 => vStopped | |
6493 | #5 <= T05 p1.2 | |
6494 | #6 => vStopped | |
6495 | #7 <= OK | |
6496 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6497 | #9 => vCont s:p1.1;c | |
6498 | ||
6499 | The last vCont above would resume thread p1.2 by mistake, because | |
6500 | the server has no idea that the event for p1.2 had not been | |
6501 | handled yet. | |
6502 | ||
6503 | The server side must similarly ignore resume actions for the | |
6504 | thread that has a pending %Stopped notification (and any other | |
6505 | threads with events pending), until GDB acks the notification | |
6506 | with vStopped. Otherwise, e.g., the following case is | |
6507 | mishandled: | |
6508 | ||
6509 | #1 => g (or any other packet) | |
6510 | #2 <= [registers] | |
6511 | #3 <= %Stopped T05 p1.2 | |
6512 | #4 => vCont s:p1.1;c | |
6513 | #5 <= OK | |
6514 | ||
6515 | Above, the server must not resume thread p1.2. GDB can't know | |
6516 | that p1.2 stopped until it acks the %Stopped notification, and | |
6517 | since from GDB's perspective all threads should be running, it | |
6518 | sends a "c" action. | |
6519 | ||
6520 | Finally, special care must also be given to handling fork/vfork | |
6521 | events. A (v)fork event actually tells us that two processes | |
6522 | stopped -- the parent and the child. Until we follow the fork, | |
6523 | we must not resume the child. Therefore, if we have a pending | |
6524 | fork follow, we must not send a global wildcard resume action | |
6525 | (vCont;c). We can still send process-wide wildcards though. */ | |
6526 | ||
6527 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
6528 | may_global_wildcard_vcont = 1; | |
6529 | ||
6530 | /* And assume every process is individually wildcard-able too. */ | |
5b6d1e4f | 6531 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6532 | { |
089354bb SM |
6533 | remote_inferior *priv = get_remote_inferior (inf); |
6534 | ||
6535 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6536 | } |
6537 | ||
6538 | /* Check for any pending events (not reported or processed yet) and | |
6539 | disable process and global wildcard resumes appropriately. */ | |
6540 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6541 | ||
5b6d1e4f | 6542 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf PA |
6543 | { |
6544 | /* If a thread of a process is not meant to be resumed, then we | |
6545 | can't wildcard that process. */ | |
6546 | if (!tp->executing) | |
6547 | { | |
089354bb | 6548 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6549 | |
6550 | /* And if we can't wildcard a process, we can't wildcard | |
6551 | everything either. */ | |
6552 | may_global_wildcard_vcont = 0; | |
6553 | continue; | |
6554 | } | |
6555 | ||
6556 | /* If a thread is the parent of an unfollowed fork, then we | |
6557 | can't do a global wildcard, as that would resume the fork | |
6558 | child. */ | |
6559 | if (is_pending_fork_parent_thread (tp)) | |
6560 | may_global_wildcard_vcont = 0; | |
6561 | } | |
6562 | ||
6563 | /* Now let's build the vCont packet(s). Actions must be appended | |
6564 | from narrower to wider scopes (thread -> process -> global). If | |
6565 | we end up with too many actions for a single packet vcont_builder | |
6566 | flushes the current vCont packet to the remote side and starts a | |
6567 | new one. */ | |
6b8edb51 | 6568 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
6569 | |
6570 | /* Threads first. */ | |
5b6d1e4f | 6571 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6572 | { |
7aabaf9d | 6573 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf PA |
6574 | |
6575 | if (!tp->executing || remote_thr->vcont_resumed) | |
6576 | continue; | |
6577 | ||
6578 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6579 | ||
6580 | if (!remote_thr->last_resume_step | |
6581 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
089354bb | 6582 | && get_remote_inferior (tp->inf)->may_wildcard_vcont) |
85ad3aaf PA |
6583 | { |
6584 | /* We'll send a wildcard resume instead. */ | |
6585 | remote_thr->vcont_resumed = 1; | |
6586 | continue; | |
6587 | } | |
6588 | ||
f5db4863 | 6589 | vcont_builder.push_action (tp->ptid, |
85ad3aaf PA |
6590 | remote_thr->last_resume_step, |
6591 | remote_thr->last_resume_sig); | |
6592 | remote_thr->vcont_resumed = 1; | |
6593 | } | |
6594 | ||
6595 | /* Now check whether we can send any process-wide wildcard. This is | |
6596 | to avoid sending a global wildcard in the case nothing is | |
6597 | supposed to be resumed. */ | |
6598 | any_process_wildcard = 0; | |
6599 | ||
5b6d1e4f | 6600 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6601 | { |
089354bb | 6602 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6603 | { |
6604 | any_process_wildcard = 1; | |
6605 | break; | |
6606 | } | |
6607 | } | |
6608 | ||
6609 | if (any_process_wildcard) | |
6610 | { | |
6611 | /* If all processes are wildcard-able, then send a single "c" | |
6612 | action, otherwise, send an "all (-1) threads of process" | |
6613 | continue action for each running process, if any. */ | |
6614 | if (may_global_wildcard_vcont) | |
6615 | { | |
f5db4863 PA |
6616 | vcont_builder.push_action (minus_one_ptid, |
6617 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6618 | } |
6619 | else | |
6620 | { | |
5b6d1e4f | 6621 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6622 | { |
089354bb | 6623 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6624 | { |
f2907e49 | 6625 | vcont_builder.push_action (ptid_t (inf->pid), |
f5db4863 | 6626 | false, GDB_SIGNAL_0); |
85ad3aaf PA |
6627 | } |
6628 | } | |
6629 | } | |
6630 | } | |
6631 | ||
f5db4863 | 6632 | vcont_builder.flush (); |
85ad3aaf PA |
6633 | } |
6634 | ||
c906108c | 6635 | \f |
43ff13b4 | 6636 | |
74531fed PA |
6637 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6638 | thread, all threads of a remote process, or all threads of all | |
6639 | processes. */ | |
6640 | ||
6b8edb51 PA |
6641 | void |
6642 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
6643 | { |
6644 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6645 | char *p = rs->buf.data (); |
6646 | char *endp = p + get_remote_packet_size (); | |
74531fed | 6647 | |
5b6d1e4f PA |
6648 | /* FIXME: This supports_vCont_probed check is a workaround until |
6649 | packet_support is per-connection. */ | |
6650 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN | |
6651 | || !rs->supports_vCont_probed) | |
6b8edb51 | 6652 | remote_vcont_probe (); |
74531fed | 6653 | |
d458bd84 | 6654 | if (!rs->supports_vCont.t) |
74531fed PA |
6655 | error (_("Remote server does not support stopping threads")); |
6656 | ||
d7e15655 | 6657 | if (ptid == minus_one_ptid |
0e998d96 | 6658 | || (!remote_multi_process_p (rs) && ptid.is_pid ())) |
74531fed PA |
6659 | p += xsnprintf (p, endp - p, "vCont;t"); |
6660 | else | |
6661 | { | |
6662 | ptid_t nptid; | |
6663 | ||
74531fed PA |
6664 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6665 | ||
0e998d96 | 6666 | if (ptid.is_pid ()) |
74531fed | 6667 | /* All (-1) threads of process. */ |
e99b03dc | 6668 | nptid = ptid_t (ptid.pid (), -1, 0); |
74531fed PA |
6669 | else |
6670 | { | |
6671 | /* Small optimization: if we already have a stop reply for | |
6672 | this thread, no use in telling the stub we want this | |
6673 | stopped. */ | |
6674 | if (peek_stop_reply (ptid)) | |
6675 | return; | |
6676 | ||
6677 | nptid = ptid; | |
6678 | } | |
6679 | ||
a9cbf802 | 6680 | write_ptid (p, endp, nptid); |
74531fed PA |
6681 | } |
6682 | ||
6683 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6684 | come in asynchronously by notification. */ | |
6685 | putpkt (rs->buf); | |
8d64371b TT |
6686 | getpkt (&rs->buf, 0); |
6687 | if (strcmp (rs->buf.data (), "OK") != 0) | |
a068643d | 6688 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid).c_str (), |
8d64371b | 6689 | rs->buf.data ()); |
74531fed PA |
6690 | } |
6691 | ||
bfedc46a PA |
6692 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6693 | interrupt the remote target. It is undefined which thread of which | |
6694 | process reports the interrupt. */ | |
74531fed | 6695 | |
6b8edb51 PA |
6696 | void |
6697 | remote_target::remote_interrupt_as () | |
74531fed PA |
6698 | { |
6699 | struct remote_state *rs = get_remote_state (); | |
6700 | ||
3a29589a DJ |
6701 | rs->ctrlc_pending_p = 1; |
6702 | ||
74531fed PA |
6703 | /* If the inferior is stopped already, but the core didn't know |
6704 | about it yet, just ignore the request. The cached wait status | |
6705 | will be collected in remote_wait. */ | |
6706 | if (rs->cached_wait_status) | |
6707 | return; | |
6708 | ||
9a7071a8 JB |
6709 | /* Send interrupt_sequence to remote target. */ |
6710 | send_interrupt_sequence (); | |
74531fed PA |
6711 | } |
6712 | ||
de979965 PA |
6713 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6714 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6715 | reports the interrupt. Throws an error if the packet is not |
6716 | supported by the server. */ | |
de979965 | 6717 | |
6b8edb51 PA |
6718 | void |
6719 | remote_target::remote_interrupt_ns () | |
de979965 PA |
6720 | { |
6721 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6722 | char *p = rs->buf.data (); |
6723 | char *endp = p + get_remote_packet_size (); | |
de979965 PA |
6724 | |
6725 | xsnprintf (p, endp - p, "vCtrlC"); | |
6726 | ||
6727 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6728 | come in asynchronously by notification. */ | |
6729 | putpkt (rs->buf); | |
8d64371b | 6730 | getpkt (&rs->buf, 0); |
de979965 PA |
6731 | |
6732 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6733 | { | |
6734 | case PACKET_OK: | |
6735 | break; | |
6736 | case PACKET_UNKNOWN: | |
e42de8c7 | 6737 | error (_("No support for interrupting the remote target.")); |
de979965 | 6738 | case PACKET_ERROR: |
8d64371b | 6739 | error (_("Interrupting target failed: %s"), rs->buf.data ()); |
de979965 | 6740 | } |
de979965 PA |
6741 | } |
6742 | ||
bfedc46a | 6743 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6744 | |
f6ac5f3d PA |
6745 | void |
6746 | remote_target::stop (ptid_t ptid) | |
c906108c | 6747 | { |
7a292a7a | 6748 | if (remote_debug) |
0f71a2f6 | 6749 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6750 | |
6efcd9a8 | 6751 | if (target_is_non_stop_p ()) |
74531fed | 6752 | remote_stop_ns (ptid); |
c906108c | 6753 | else |
bfedc46a PA |
6754 | { |
6755 | /* We don't currently have a way to transparently pause the | |
6756 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6757 | remote_interrupt_as (); |
bfedc46a PA |
6758 | } |
6759 | } | |
6760 | ||
6761 | /* Implement the to_interrupt function for the remote targets. */ | |
6762 | ||
f6ac5f3d PA |
6763 | void |
6764 | remote_target::interrupt () | |
bfedc46a PA |
6765 | { |
6766 | if (remote_debug) | |
6767 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6768 | ||
e42de8c7 PA |
6769 | if (target_is_non_stop_p ()) |
6770 | remote_interrupt_ns (); | |
bfedc46a | 6771 | else |
e42de8c7 | 6772 | remote_interrupt_as (); |
c906108c SS |
6773 | } |
6774 | ||
93692b58 PA |
6775 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6776 | ||
f6ac5f3d PA |
6777 | void |
6778 | remote_target::pass_ctrlc () | |
93692b58 PA |
6779 | { |
6780 | struct remote_state *rs = get_remote_state (); | |
6781 | ||
6782 | if (remote_debug) | |
6783 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6784 | ||
6785 | /* If we're starting up, we're not fully synced yet. Quit | |
6786 | immediately. */ | |
6787 | if (rs->starting_up) | |
6788 | quit (); | |
6789 | /* If ^C has already been sent once, offer to disconnect. */ | |
6790 | else if (rs->ctrlc_pending_p) | |
6791 | interrupt_query (); | |
6792 | else | |
e671cd59 | 6793 | target_interrupt (); |
93692b58 PA |
6794 | } |
6795 | ||
c906108c SS |
6796 | /* Ask the user what to do when an interrupt is received. */ |
6797 | ||
6b8edb51 PA |
6798 | void |
6799 | remote_target::interrupt_query () | |
c906108c | 6800 | { |
abc56d60 | 6801 | struct remote_state *rs = get_remote_state (); |
c906108c | 6802 | |
abc56d60 | 6803 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6804 | { |
abc56d60 PA |
6805 | if (query (_("The target is not responding to interrupt requests.\n" |
6806 | "Stop debugging it? "))) | |
74531fed | 6807 | { |
5b6d1e4f | 6808 | remote_unpush_target (this); |
abc56d60 | 6809 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6810 | } |
6811 | } | |
abc56d60 PA |
6812 | else |
6813 | { | |
6814 | if (query (_("Interrupted while waiting for the program.\n" | |
6815 | "Give up waiting? "))) | |
6816 | quit (); | |
6817 | } | |
c906108c SS |
6818 | } |
6819 | ||
6426a772 JM |
6820 | /* Enable/disable target terminal ownership. Most targets can use |
6821 | terminal groups to control terminal ownership. Remote targets are | |
6822 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6823 | is required. */ |
6426a772 | 6824 | |
f6ac5f3d PA |
6825 | void |
6826 | remote_target::terminal_inferior () | |
6426a772 | 6827 | { |
6426a772 JM |
6828 | /* NOTE: At this point we could also register our selves as the |
6829 | recipient of all input. Any characters typed could then be | |
23860348 | 6830 | passed on down to the target. */ |
6426a772 JM |
6831 | } |
6832 | ||
f6ac5f3d PA |
6833 | void |
6834 | remote_target::terminal_ours () | |
6426a772 | 6835 | { |
6426a772 JM |
6836 | } |
6837 | ||
176a6961 | 6838 | static void |
05be00a8 | 6839 | remote_console_output (const char *msg) |
c906108c | 6840 | { |
05be00a8 | 6841 | const char *p; |
c906108c | 6842 | |
c5aa993b | 6843 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6844 | { |
6845 | char tb[2]; | |
6846 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6847 | |
c906108c SS |
6848 | tb[0] = c; |
6849 | tb[1] = 0; | |
da5bd37e | 6850 | gdb_stdtarg->puts (tb); |
c906108c | 6851 | } |
da5bd37e | 6852 | gdb_stdtarg->flush (); |
00db5b94 | 6853 | } |
74531fed | 6854 | |
32603266 | 6855 | struct stop_reply : public notif_event |
74531fed | 6856 | { |
32603266 | 6857 | ~stop_reply (); |
74531fed | 6858 | |
722247f1 | 6859 | /* The identifier of the thread about this event */ |
74531fed PA |
6860 | ptid_t ptid; |
6861 | ||
340e3c99 | 6862 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6863 | connection, represented by a remote_state object, is closed, |
6864 | all the associated stop_reply events should be released. */ | |
6865 | struct remote_state *rs; | |
6866 | ||
74531fed PA |
6867 | struct target_waitstatus ws; |
6868 | ||
5cd63fda PA |
6869 | /* The architecture associated with the expedited registers. */ |
6870 | gdbarch *arch; | |
6871 | ||
15148d6a PA |
6872 | /* Expedited registers. This makes remote debugging a bit more |
6873 | efficient for those targets that provide critical registers as | |
6874 | part of their normal status mechanism (as another roundtrip to | |
6875 | fetch them is avoided). */ | |
32603266 | 6876 | std::vector<cached_reg_t> regcache; |
74531fed | 6877 | |
f7e6eed5 PA |
6878 | enum target_stop_reason stop_reason; |
6879 | ||
74531fed PA |
6880 | CORE_ADDR watch_data_address; |
6881 | ||
dc146f7c | 6882 | int core; |
32603266 | 6883 | }; |
c906108c | 6884 | |
221e1a37 PA |
6885 | /* Return the length of the stop reply queue. */ |
6886 | ||
6b8edb51 PA |
6887 | int |
6888 | remote_target::stop_reply_queue_length () | |
221e1a37 | 6889 | { |
6b8edb51 | 6890 | remote_state *rs = get_remote_state (); |
953edf2b | 6891 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
6892 | } |
6893 | ||
cb8c24b6 | 6894 | static void |
6b8edb51 | 6895 | remote_notif_stop_parse (remote_target *remote, |
bb277751 | 6896 | struct notif_client *self, const char *buf, |
722247f1 YQ |
6897 | struct notif_event *event) |
6898 | { | |
6b8edb51 | 6899 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
6900 | } |
6901 | ||
6902 | static void | |
6b8edb51 | 6903 | remote_notif_stop_ack (remote_target *remote, |
bb277751 | 6904 | struct notif_client *self, const char *buf, |
722247f1 YQ |
6905 | struct notif_event *event) |
6906 | { | |
6907 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6908 | ||
6909 | /* acknowledge */ | |
6b8edb51 | 6910 | putpkt (remote, self->ack_command); |
722247f1 YQ |
6911 | |
6912 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6b8edb51 | 6913 | { |
722247f1 YQ |
6914 | /* We got an unknown stop reply. */ |
6915 | error (_("Unknown stop reply")); | |
6b8edb51 | 6916 | } |
722247f1 | 6917 | |
6b8edb51 | 6918 | remote->push_stop_reply (stop_reply); |
722247f1 YQ |
6919 | } |
6920 | ||
6921 | static int | |
6b8edb51 PA |
6922 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
6923 | struct notif_client *self) | |
722247f1 YQ |
6924 | { |
6925 | /* We can't get pending events in remote_notif_process for | |
6926 | notification stop, and we have to do this in remote_wait_ns | |
6927 | instead. If we fetch all queued events from stub, remote stub | |
6928 | may exit and we have no chance to process them back in | |
6929 | remote_wait_ns. */ | |
6b8edb51 PA |
6930 | remote_state *rs = remote->get_remote_state (); |
6931 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
722247f1 YQ |
6932 | return 0; |
6933 | } | |
6934 | ||
32603266 | 6935 | stop_reply::~stop_reply () |
722247f1 | 6936 | { |
32603266 TT |
6937 | for (cached_reg_t ® : regcache) |
6938 | xfree (reg.data); | |
722247f1 YQ |
6939 | } |
6940 | ||
32603266 TT |
6941 | static notif_event_up |
6942 | remote_notif_stop_alloc_reply () | |
722247f1 | 6943 | { |
32603266 | 6944 | return notif_event_up (new struct stop_reply ()); |
722247f1 YQ |
6945 | } |
6946 | ||
6947 | /* A client of notification Stop. */ | |
6948 | ||
6949 | struct notif_client notif_client_stop = | |
6950 | { | |
6951 | "Stop", | |
6952 | "vStopped", | |
6953 | remote_notif_stop_parse, | |
6954 | remote_notif_stop_ack, | |
6955 | remote_notif_stop_can_get_pending_events, | |
6956 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6957 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6958 | }; |
6959 | ||
85ad3aaf | 6960 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6961 | the pid of the process that owns the threads we want to check, or |
6962 | -1 if we want to check all threads. */ | |
6963 | ||
6964 | static int | |
6965 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6966 | ptid_t thread_ptid) | |
6967 | { | |
6968 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6969 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6970 | { | |
e99b03dc | 6971 | if (event_pid == -1 || event_pid == thread_ptid.pid ()) |
cbb8991c DB |
6972 | return 1; |
6973 | } | |
6974 | ||
6975 | return 0; | |
6976 | } | |
6977 | ||
85ad3aaf PA |
6978 | /* Return the thread's pending status used to determine whether the |
6979 | thread is a fork parent stopped at a fork event. */ | |
6980 | ||
6981 | static struct target_waitstatus * | |
6982 | thread_pending_fork_status (struct thread_info *thread) | |
6983 | { | |
6984 | if (thread->suspend.waitstatus_pending_p) | |
6985 | return &thread->suspend.waitstatus; | |
6986 | else | |
6987 | return &thread->pending_follow; | |
6988 | } | |
6989 | ||
6990 | /* Determine if THREAD is a pending fork parent thread. */ | |
6991 | ||
6992 | static int | |
6993 | is_pending_fork_parent_thread (struct thread_info *thread) | |
6994 | { | |
6995 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
6996 | int pid = -1; | |
6997 | ||
6998 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
6999 | } | |
7000 | ||
cbb8991c DB |
7001 | /* If CONTEXT contains any fork child threads that have not been |
7002 | reported yet, remove them from the CONTEXT list. If such a | |
7003 | thread exists it is because we are stopped at a fork catchpoint | |
7004 | and have not yet called follow_fork, which will set up the | |
7005 | host-side data structures for the new process. */ | |
7006 | ||
6b8edb51 PA |
7007 | void |
7008 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c | 7009 | { |
cbb8991c DB |
7010 | int pid = -1; |
7011 | struct notif_client *notif = ¬if_client_stop; | |
cbb8991c DB |
7012 | |
7013 | /* For any threads stopped at a fork event, remove the corresponding | |
7014 | fork child threads from the CONTEXT list. */ | |
5b6d1e4f | 7015 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c | 7016 | { |
85ad3aaf | 7017 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
7018 | |
7019 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 7020 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
7021 | } |
7022 | ||
7023 | /* Check for any pending fork events (not reported or processed yet) | |
7024 | in process PID and remove those fork child threads from the | |
7025 | CONTEXT list as well. */ | |
7026 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7027 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7028 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
7029 | || event->ws.kind == TARGET_WAITKIND_VFORKED | |
7030 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
7031 | context->remove_thread (event->ws.value.related_pid); | |
85ad3aaf PA |
7032 | } |
7033 | ||
7034 | /* Check whether any event pending in the vStopped queue would prevent | |
7035 | a global or process wildcard vCont action. Clear | |
7036 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
7037 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
7038 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
7039 | ||
6b8edb51 PA |
7040 | void |
7041 | remote_target::check_pending_events_prevent_wildcard_vcont | |
7042 | (int *may_global_wildcard) | |
85ad3aaf PA |
7043 | { |
7044 | struct notif_client *notif = ¬if_client_stop; | |
7045 | ||
7046 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7047 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7048 | { | |
7049 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
7050 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
7051 | continue; | |
85ad3aaf | 7052 | |
953edf2b TT |
7053 | if (event->ws.kind == TARGET_WAITKIND_FORKED |
7054 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
7055 | *may_global_wildcard = 0; | |
722247f1 | 7056 | |
5b6d1e4f | 7057 | struct inferior *inf = find_inferior_ptid (this, event->ptid); |
722247f1 | 7058 | |
953edf2b TT |
7059 | /* This may be the first time we heard about this process. |
7060 | Regardless, we must not do a global wildcard resume, otherwise | |
7061 | we'd resume this process too. */ | |
7062 | *may_global_wildcard = 0; | |
7063 | if (inf != NULL) | |
7064 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
722247f1 | 7065 | } |
722247f1 YQ |
7066 | } |
7067 | ||
f48ff2a7 | 7068 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7069 | |
6b8edb51 PA |
7070 | void |
7071 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7072 | { |
f48ff2a7 YQ |
7073 | struct stop_reply *reply; |
7074 | struct remote_state *rs = get_remote_state (); | |
7075 | struct remote_notif_state *rns = rs->notif_state; | |
7076 | ||
7077 | /* This function can be notified when an inferior exists. When the | |
7078 | target is not remote, the notification state is NULL. */ | |
7079 | if (rs->remote_desc == NULL) | |
7080 | return; | |
7081 | ||
7082 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7083 | |
74531fed | 7084 | /* Discard the in-flight notification. */ |
e99b03dc | 7085 | if (reply != NULL && reply->ptid.pid () == inf->pid) |
74531fed | 7086 | { |
32603266 | 7087 | delete reply; |
f48ff2a7 | 7088 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 7089 | } |
c906108c | 7090 | |
74531fed PA |
7091 | /* Discard the stop replies we have already pulled with |
7092 | vStopped. */ | |
953edf2b TT |
7093 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7094 | rs->stop_reply_queue.end (), | |
7095 | [=] (const stop_reply_up &event) | |
7096 | { | |
7097 | return event->ptid.pid () == inf->pid; | |
7098 | }); | |
7099 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
bcc75809 YQ |
7100 | } |
7101 | ||
7102 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7103 | |
6b8edb51 PA |
7104 | void |
7105 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7106 | { |
6b8edb51 | 7107 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7108 | |
f48ff2a7 YQ |
7109 | /* Discard the stop replies we have already pulled with |
7110 | vStopped. */ | |
953edf2b TT |
7111 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7112 | rs->stop_reply_queue.end (), | |
7113 | [=] (const stop_reply_up &event) | |
7114 | { | |
7115 | return event->rs == rs; | |
7116 | }); | |
7117 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7118 | } |
43ff13b4 | 7119 | |
722247f1 YQ |
7120 | /* Remove the first reply in 'stop_reply_queue' which matches |
7121 | PTID. */ | |
2e9f7625 | 7122 | |
6b8edb51 PA |
7123 | struct stop_reply * |
7124 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7125 | { |
953edf2b | 7126 | remote_state *rs = get_remote_state (); |
722247f1 | 7127 | |
953edf2b TT |
7128 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7129 | rs->stop_reply_queue.end (), | |
7130 | [=] (const stop_reply_up &event) | |
7131 | { | |
7132 | return event->ptid.matches (ptid); | |
7133 | }); | |
7134 | struct stop_reply *result; | |
7135 | if (iter == rs->stop_reply_queue.end ()) | |
7136 | result = nullptr; | |
7137 | else | |
7138 | { | |
7139 | result = iter->release (); | |
7140 | rs->stop_reply_queue.erase (iter); | |
7141 | } | |
722247f1 | 7142 | |
722247f1 YQ |
7143 | if (notif_debug) |
7144 | fprintf_unfiltered (gdb_stdlog, | |
7145 | "notif: discard queued event: 'Stop' in %s\n", | |
a068643d | 7146 | target_pid_to_str (ptid).c_str ()); |
a744cf53 | 7147 | |
953edf2b | 7148 | return result; |
74531fed | 7149 | } |
75c99385 | 7150 | |
74531fed PA |
7151 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7152 | remove it from the queue, and return it. Returns NULL if none is | |
7153 | found. If there are still queued events left to process, tell the | |
7154 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7155 | |
6b8edb51 PA |
7156 | struct stop_reply * |
7157 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7158 | { |
953edf2b | 7159 | remote_state *rs = get_remote_state (); |
722247f1 | 7160 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7161 | |
953edf2b | 7162 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7163 | { |
6b8edb51 PA |
7164 | /* There's still at least an event left. */ |
7165 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
7166 | } | |
74531fed | 7167 | |
722247f1 | 7168 | return r; |
74531fed PA |
7169 | } |
7170 | ||
7171 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7172 | know that we now have at least one queued event left to pass to the | |
7173 | core side, tell the event loop to get back to target_wait soon. */ | |
7174 | ||
6b8edb51 PA |
7175 | void |
7176 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7177 | { |
6b8edb51 | 7178 | remote_state *rs = get_remote_state (); |
953edf2b | 7179 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7180 | |
722247f1 YQ |
7181 | if (notif_debug) |
7182 | fprintf_unfiltered (gdb_stdlog, | |
7183 | "notif: push 'Stop' %s to queue %d\n", | |
a068643d | 7184 | target_pid_to_str (new_event->ptid).c_str (), |
953edf2b | 7185 | int (rs->stop_reply_queue.size ())); |
74531fed | 7186 | |
6b8edb51 | 7187 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
74531fed PA |
7188 | } |
7189 | ||
7190 | /* Returns true if we have a stop reply for PTID. */ | |
7191 | ||
6b8edb51 PA |
7192 | int |
7193 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7194 | { |
6b8edb51 | 7195 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7196 | for (auto &event : rs->stop_reply_queue) |
7197 | if (ptid == event->ptid | |
7198 | && event->ws.kind == TARGET_WAITKIND_STOPPED) | |
7199 | return 1; | |
7200 | return 0; | |
74531fed PA |
7201 | } |
7202 | ||
26d56a93 SL |
7203 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7204 | starting with P and ending with PEND matches PREFIX. */ | |
7205 | ||
7206 | static int | |
7207 | strprefix (const char *p, const char *pend, const char *prefix) | |
7208 | { | |
7209 | for ( ; p < pend; p++, prefix++) | |
7210 | if (*p != *prefix) | |
7211 | return 0; | |
7212 | return *prefix == '\0'; | |
7213 | } | |
7214 | ||
74531fed PA |
7215 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7216 | result is stored in EVENT, or throws an error. */ | |
7217 | ||
6b8edb51 | 7218 | void |
bb277751 | 7219 | remote_target::remote_parse_stop_reply (const char *buf, stop_reply *event) |
74531fed | 7220 | { |
5cd63fda | 7221 | remote_arch_state *rsa = NULL; |
74531fed | 7222 | ULONGEST addr; |
256642e8 | 7223 | const char *p; |
94585166 | 7224 | int skipregs = 0; |
74531fed PA |
7225 | |
7226 | event->ptid = null_ptid; | |
bcc75809 | 7227 | event->rs = get_remote_state (); |
74531fed PA |
7228 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
7229 | event->ws.value.integer = 0; | |
f7e6eed5 | 7230 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
32603266 | 7231 | event->regcache.clear (); |
dc146f7c | 7232 | event->core = -1; |
74531fed PA |
7233 | |
7234 | switch (buf[0]) | |
7235 | { | |
7236 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7237 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7238 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7239 | ss = signal number | |
7240 | n... = register number | |
7241 | r... = register contents | |
7242 | */ | |
7243 | ||
7244 | p = &buf[3]; /* after Txx */ | |
7245 | while (*p) | |
7246 | { | |
256642e8 | 7247 | const char *p1; |
cea39f65 | 7248 | int fieldsize; |
43ff13b4 | 7249 | |
1f10ba14 PA |
7250 | p1 = strchr (p, ':'); |
7251 | if (p1 == NULL) | |
7252 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7253 | Packet: '%s'\n"), | |
7254 | p, buf); | |
7255 | if (p == p1) | |
7256 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7257 | Packet: '%s'\n"), | |
7258 | p, buf); | |
3c3bea1c | 7259 | |
1f10ba14 PA |
7260 | /* Some "registers" are actually extended stop information. |
7261 | Note if you're adding a new entry here: GDB 7.9 and | |
7262 | earlier assume that all register "numbers" that start | |
7263 | with an hex digit are real register numbers. Make sure | |
7264 | the server only sends such a packet if it knows the | |
7265 | client understands it. */ | |
c8e38a49 | 7266 | |
26d56a93 | 7267 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7268 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7269 | else if (strprefix (p, p1, "syscall_entry")) |
7270 | { | |
7271 | ULONGEST sysno; | |
7272 | ||
7273 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
7274 | p = unpack_varlen_hex (++p1, &sysno); | |
7275 | event->ws.value.syscall_number = (int) sysno; | |
7276 | } | |
7277 | else if (strprefix (p, p1, "syscall_return")) | |
7278 | { | |
7279 | ULONGEST sysno; | |
7280 | ||
7281 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
7282 | p = unpack_varlen_hex (++p1, &sysno); | |
7283 | event->ws.value.syscall_number = (int) sysno; | |
7284 | } | |
26d56a93 SL |
7285 | else if (strprefix (p, p1, "watch") |
7286 | || strprefix (p, p1, "rwatch") | |
7287 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7288 | { |
f7e6eed5 | 7289 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7290 | p = unpack_varlen_hex (++p1, &addr); |
7291 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7292 | } |
26d56a93 | 7293 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7294 | { |
7295 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7296 | ||
7297 | /* Make sure the stub doesn't forget to indicate support | |
7298 | with qSupported. */ | |
7299 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7300 | error (_("Unexpected swbreak stop reason")); | |
7301 | ||
7302 | /* The value part is documented as "must be empty", | |
7303 | though we ignore it, in case we ever decide to make | |
7304 | use of it in a backward compatible way. */ | |
8424cc97 | 7305 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7306 | } |
26d56a93 | 7307 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7308 | { |
7309 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7310 | ||
7311 | /* Make sure the stub doesn't forget to indicate support | |
7312 | with qSupported. */ | |
7313 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7314 | error (_("Unexpected hwbreak stop reason")); | |
7315 | ||
7316 | /* See above. */ | |
8424cc97 | 7317 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7318 | } |
26d56a93 | 7319 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7320 | { |
1f10ba14 | 7321 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 7322 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7323 | } |
26d56a93 | 7324 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
7325 | { |
7326 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
7327 | /* p1 will indicate "begin" or "end", but it makes | |
7328 | no difference for now, so ignore it. */ | |
8424cc97 | 7329 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7330 | } |
26d56a93 | 7331 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7332 | { |
7333 | ULONGEST c; | |
a744cf53 | 7334 | |
1f10ba14 PA |
7335 | p = unpack_varlen_hex (++p1, &c); |
7336 | event->core = c; | |
cea39f65 | 7337 | } |
26d56a93 | 7338 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
7339 | { |
7340 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7341 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
7342 | } | |
26d56a93 | 7343 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
7344 | { |
7345 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7346 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
7347 | } | |
26d56a93 | 7348 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
7349 | { |
7350 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 7351 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7352 | } |
6ab24463 | 7353 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7354 | { |
7355 | ULONGEST ignored; | |
94585166 DB |
7356 | int pathlen; |
7357 | ||
7358 | /* Determine the length of the execd pathname. */ | |
7359 | p = unpack_varlen_hex (++p1, &ignored); | |
7360 | pathlen = (p - p1) / 2; | |
7361 | ||
7362 | /* Save the pathname for event reporting and for | |
7363 | the next run command. */ | |
c6321f19 TT |
7364 | gdb::unique_xmalloc_ptr<char[]> pathname |
7365 | ((char *) xmalloc (pathlen + 1)); | |
7366 | hex2bin (p1, (gdb_byte *) pathname.get (), pathlen); | |
94585166 DB |
7367 | pathname[pathlen] = '\0'; |
7368 | ||
7369 | /* This is freed during event handling. */ | |
c6321f19 | 7370 | event->ws.value.execd_pathname = pathname.release (); |
94585166 DB |
7371 | event->ws.kind = TARGET_WAITKIND_EXECD; |
7372 | ||
7373 | /* Skip the registers included in this packet, since | |
7374 | they may be for an architecture different from the | |
7375 | one used by the original program. */ | |
7376 | skipregs = 1; | |
7377 | } | |
65706a29 PA |
7378 | else if (strprefix (p, p1, "create")) |
7379 | { | |
7380 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 7381 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7382 | } |
cea39f65 MS |
7383 | else |
7384 | { | |
1f10ba14 | 7385 | ULONGEST pnum; |
256642e8 | 7386 | const char *p_temp; |
1f10ba14 | 7387 | |
94585166 DB |
7388 | if (skipregs) |
7389 | { | |
8424cc97 | 7390 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7391 | p++; |
7392 | continue; | |
7393 | } | |
7394 | ||
1f10ba14 PA |
7395 | /* Maybe a real ``P'' register number. */ |
7396 | p_temp = unpack_varlen_hex (p, &pnum); | |
7397 | /* If the first invalid character is the colon, we got a | |
7398 | register number. Otherwise, it's an unknown stop | |
7399 | reason. */ | |
7400 | if (p_temp == p1) | |
7401 | { | |
5cd63fda PA |
7402 | /* If we haven't parsed the event's thread yet, find |
7403 | it now, in order to find the architecture of the | |
7404 | reported expedited registers. */ | |
7405 | if (event->ptid == null_ptid) | |
7406 | { | |
24ed6739 AB |
7407 | /* If there is no thread-id information then leave |
7408 | the event->ptid as null_ptid. Later in | |
7409 | process_stop_reply we will pick a suitable | |
7410 | thread. */ | |
5cd63fda PA |
7411 | const char *thr = strstr (p1 + 1, ";thread:"); |
7412 | if (thr != NULL) | |
7413 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7414 | NULL); | |
5cd63fda PA |
7415 | } |
7416 | ||
7417 | if (rsa == NULL) | |
7418 | { | |
5b6d1e4f PA |
7419 | inferior *inf |
7420 | = (event->ptid == null_ptid | |
7421 | ? NULL | |
7422 | : find_inferior_ptid (this, event->ptid)); | |
5cd63fda PA |
7423 | /* If this is the first time we learn anything |
7424 | about this process, skip the registers | |
7425 | included in this packet, since we don't yet | |
7426 | know which architecture to use to parse them. | |
7427 | We'll determine the architecture later when | |
7428 | we process the stop reply and retrieve the | |
7429 | target description, via | |
7430 | remote_notice_new_inferior -> | |
7431 | post_create_inferior. */ | |
7432 | if (inf == NULL) | |
7433 | { | |
7434 | p = strchrnul (p1 + 1, ';'); | |
7435 | p++; | |
7436 | continue; | |
7437 | } | |
7438 | ||
7439 | event->arch = inf->gdbarch; | |
9d6eea31 | 7440 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7441 | } |
7442 | ||
7443 | packet_reg *reg | |
7444 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7445 | cached_reg_t cached_reg; |
43ff13b4 | 7446 | |
1f10ba14 PA |
7447 | if (reg == NULL) |
7448 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7449 | Packet: '%s'\n"), |
1f10ba14 | 7450 | hex_string (pnum), p, buf); |
c8e38a49 | 7451 | |
1f10ba14 | 7452 | cached_reg.num = reg->regnum; |
d1dff226 | 7453 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7454 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7455 | |
1f10ba14 PA |
7456 | p = p1 + 1; |
7457 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7458 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7459 | p += 2 * fieldsize; |
5cd63fda | 7460 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7461 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7462 | |
32603266 | 7463 | event->regcache.push_back (cached_reg); |
1f10ba14 PA |
7464 | } |
7465 | else | |
7466 | { | |
7467 | /* Not a number. Silently skip unknown optional | |
7468 | info. */ | |
8424cc97 | 7469 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7470 | } |
cea39f65 | 7471 | } |
c8e38a49 | 7472 | |
cea39f65 MS |
7473 | if (*p != ';') |
7474 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7475 | buf, p); | |
7476 | ++p; | |
7477 | } | |
5b5596ff PA |
7478 | |
7479 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7480 | break; | |
7481 | ||
c8e38a49 PA |
7482 | /* fall through */ |
7483 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7484 | { |
7485 | int sig; | |
7486 | ||
7487 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7488 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7489 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7490 | event->ws.value.sig = (enum gdb_signal) sig; | |
7491 | else | |
7492 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7493 | } | |
c8e38a49 | 7494 | break; |
65706a29 PA |
7495 | case 'w': /* Thread exited. */ |
7496 | { | |
65706a29 PA |
7497 | ULONGEST value; |
7498 | ||
7499 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7500 | p = unpack_varlen_hex (&buf[1], &value); | |
7501 | event->ws.value.integer = value; | |
7502 | if (*p != ';') | |
7503 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7504 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7505 | break; |
7506 | } | |
c8e38a49 PA |
7507 | case 'W': /* Target exited. */ |
7508 | case 'X': | |
7509 | { | |
c8e38a49 | 7510 | ULONGEST value; |
82f73884 | 7511 | |
c8e38a49 PA |
7512 | /* GDB used to accept only 2 hex chars here. Stubs should |
7513 | only send more if they detect GDB supports multi-process | |
7514 | support. */ | |
7515 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7516 | |
c8e38a49 PA |
7517 | if (buf[0] == 'W') |
7518 | { | |
7519 | /* The remote process exited. */ | |
74531fed PA |
7520 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7521 | event->ws.value.integer = value; | |
c8e38a49 PA |
7522 | } |
7523 | else | |
7524 | { | |
7525 | /* The remote process exited with a signal. */ | |
74531fed | 7526 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7527 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7528 | event->ws.value.sig = (enum gdb_signal) value; | |
7529 | else | |
7530 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7531 | } |
82f73884 | 7532 | |
e7af6c70 TBA |
7533 | /* If no process is specified, return null_ptid, and let the |
7534 | caller figure out the right process to use. */ | |
7535 | int pid = 0; | |
c8e38a49 PA |
7536 | if (*p == '\0') |
7537 | ; | |
7538 | else if (*p == ';') | |
7539 | { | |
7540 | p++; | |
7541 | ||
0b24eb2d | 7542 | if (*p == '\0') |
82f73884 | 7543 | ; |
61012eef | 7544 | else if (startswith (p, "process:")) |
82f73884 | 7545 | { |
c8e38a49 | 7546 | ULONGEST upid; |
a744cf53 | 7547 | |
c8e38a49 PA |
7548 | p += sizeof ("process:") - 1; |
7549 | unpack_varlen_hex (p, &upid); | |
7550 | pid = upid; | |
82f73884 PA |
7551 | } |
7552 | else | |
7553 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7554 | } |
c8e38a49 PA |
7555 | else |
7556 | error (_("unknown stop reply packet: %s"), buf); | |
f2907e49 | 7557 | event->ptid = ptid_t (pid); |
74531fed PA |
7558 | } |
7559 | break; | |
f2faf941 PA |
7560 | case 'N': |
7561 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7562 | event->ptid = minus_one_ptid; | |
7563 | break; | |
74531fed | 7564 | } |
74531fed PA |
7565 | } |
7566 | ||
722247f1 YQ |
7567 | /* When the stub wants to tell GDB about a new notification reply, it |
7568 | sends a notification (%Stop, for example). Those can come it at | |
7569 | any time, hence, we have to make sure that any pending | |
7570 | putpkt/getpkt sequence we're making is finished, before querying | |
7571 | the stub for more events with the corresponding ack command | |
7572 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7573 | immediately upon receiving the notification, something like this | |
7574 | could happen: | |
74531fed PA |
7575 | |
7576 | 1.1) --> Hg 1 | |
7577 | 1.2) <-- OK | |
7578 | 1.3) --> g | |
7579 | 1.4) <-- %Stop | |
7580 | 1.5) --> vStopped | |
7581 | 1.6) <-- (registers reply to step #1.3) | |
7582 | ||
7583 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7584 | query. | |
7585 | ||
796cb314 | 7586 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7587 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7588 | doing whatever we were doing: | |
7589 | ||
7590 | 2.1) --> Hg 1 | |
7591 | 2.2) <-- OK | |
7592 | 2.3) --> g | |
7593 | 2.4) <-- %Stop | |
7594 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7595 | 2.5) <-- (registers reply to step #2.3) | |
7596 | ||
85102364 | 7597 | Eventually after step #2.5, we return to the event loop, which |
74531fed PA |
7598 | notices there's an event on the |
7599 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7600 | associated callback --- the function below. At this point, we're | |
7601 | always safe to start a vStopped sequence. : | |
7602 | ||
7603 | 2.6) --> vStopped | |
7604 | 2.7) <-- T05 thread:2 | |
7605 | 2.8) --> vStopped | |
7606 | 2.9) --> OK | |
7607 | */ | |
7608 | ||
722247f1 | 7609 | void |
6b8edb51 | 7610 | remote_target::remote_notif_get_pending_events (notif_client *nc) |
74531fed PA |
7611 | { |
7612 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7613 | |
f48ff2a7 | 7614 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7615 | { |
722247f1 YQ |
7616 | if (notif_debug) |
7617 | fprintf_unfiltered (gdb_stdlog, | |
7618 | "notif: process: '%s' ack pending event\n", | |
7619 | nc->name); | |
74531fed | 7620 | |
722247f1 | 7621 | /* acknowledge */ |
8d64371b TT |
7622 | nc->ack (this, nc, rs->buf.data (), |
7623 | rs->notif_state->pending_event[nc->id]); | |
f48ff2a7 | 7624 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
7625 | |
7626 | while (1) | |
7627 | { | |
8d64371b TT |
7628 | getpkt (&rs->buf, 0); |
7629 | if (strcmp (rs->buf.data (), "OK") == 0) | |
74531fed PA |
7630 | break; |
7631 | else | |
8d64371b | 7632 | remote_notif_ack (this, nc, rs->buf.data ()); |
74531fed PA |
7633 | } |
7634 | } | |
722247f1 YQ |
7635 | else |
7636 | { | |
7637 | if (notif_debug) | |
7638 | fprintf_unfiltered (gdb_stdlog, | |
7639 | "notif: process: '%s' no pending reply\n", | |
7640 | nc->name); | |
7641 | } | |
74531fed PA |
7642 | } |
7643 | ||
6b8edb51 PA |
7644 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
7645 | avoid having to export the whole remote_target class. */ | |
7646 | ||
7647 | void | |
7648 | remote_notif_get_pending_events (remote_target *remote, notif_client *nc) | |
7649 | { | |
7650 | remote->remote_notif_get_pending_events (nc); | |
7651 | } | |
7652 | ||
74531fed PA |
7653 | /* Called when it is decided that STOP_REPLY holds the info of the |
7654 | event that is to be returned to the core. This function always | |
7655 | destroys STOP_REPLY. */ | |
7656 | ||
6b8edb51 PA |
7657 | ptid_t |
7658 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
7659 | struct target_waitstatus *status) | |
74531fed PA |
7660 | { |
7661 | ptid_t ptid; | |
7662 | ||
7663 | *status = stop_reply->ws; | |
7664 | ptid = stop_reply->ptid; | |
7665 | ||
24ed6739 AB |
7666 | /* If no thread/process was reported by the stub then use the first |
7667 | non-exited thread in the current target. */ | |
d7e15655 | 7668 | if (ptid == null_ptid) |
24ed6739 | 7669 | { |
cada5fc9 AB |
7670 | /* Some stop events apply to all threads in an inferior, while others |
7671 | only apply to a single thread. */ | |
7672 | bool is_stop_for_all_threads | |
7673 | = (status->kind == TARGET_WAITKIND_EXITED | |
7674 | || status->kind == TARGET_WAITKIND_SIGNALLED); | |
7675 | ||
24ed6739 AB |
7676 | for (thread_info *thr : all_non_exited_threads (this)) |
7677 | { | |
cada5fc9 AB |
7678 | if (ptid != null_ptid |
7679 | && (!is_stop_for_all_threads | |
7680 | || ptid.pid () != thr->ptid.pid ())) | |
24ed6739 AB |
7681 | { |
7682 | static bool warned = false; | |
7683 | ||
7684 | if (!warned) | |
7685 | { | |
7686 | /* If you are seeing this warning then the remote target | |
cada5fc9 AB |
7687 | has stopped without specifying a thread-id, but the |
7688 | target does have multiple threads (or inferiors), and | |
7689 | so GDB is having to guess which thread stopped. | |
7690 | ||
7691 | Examples of what might cause this are the target | |
7692 | sending and 'S' stop packet, or a 'T' stop packet and | |
7693 | not including a thread-id. | |
7694 | ||
7695 | Additionally, the target might send a 'W' or 'X | |
7696 | packet without including a process-id, when the target | |
7697 | has multiple running inferiors. */ | |
7698 | if (is_stop_for_all_threads) | |
7699 | warning (_("multi-inferior target stopped without " | |
7700 | "sending a process-id, using first " | |
7701 | "non-exited inferior")); | |
7702 | else | |
7703 | warning (_("multi-threaded target stopped without " | |
7704 | "sending a thread-id, using first " | |
7705 | "non-exited thread")); | |
24ed6739 AB |
7706 | warned = true; |
7707 | } | |
7708 | break; | |
7709 | } | |
cada5fc9 AB |
7710 | |
7711 | /* If this is a stop for all threads then don't use a particular | |
7712 | threads ptid, instead create a new ptid where only the pid | |
7713 | field is set. */ | |
7714 | if (is_stop_for_all_threads) | |
7715 | ptid = ptid_t (thr->ptid.pid ()); | |
7716 | else | |
7717 | ptid = thr->ptid; | |
24ed6739 AB |
7718 | } |
7719 | gdb_assert (ptid != null_ptid); | |
7720 | } | |
74531fed | 7721 | |
5f3563ea | 7722 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7723 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7724 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7725 | { |
5f3563ea | 7726 | /* Expedited registers. */ |
32603266 | 7727 | if (!stop_reply->regcache.empty ()) |
5f3563ea | 7728 | { |
217f1f79 | 7729 | struct regcache *regcache |
5b6d1e4f | 7730 | = get_thread_arch_regcache (this, ptid, stop_reply->arch); |
5f3563ea | 7731 | |
32603266 TT |
7732 | for (cached_reg_t ® : stop_reply->regcache) |
7733 | { | |
7734 | regcache->raw_supply (reg.num, reg.data); | |
7735 | xfree (reg.data); | |
7736 | } | |
d1dff226 | 7737 | |
32603266 | 7738 | stop_reply->regcache.clear (); |
5f3563ea | 7739 | } |
74531fed | 7740 | |
1941c569 | 7741 | remote_notice_new_inferior (ptid, 0); |
5b6d1e4f | 7742 | remote_thread_info *remote_thr = get_remote_thread_info (this, ptid); |
799a2abe PA |
7743 | remote_thr->core = stop_reply->core; |
7744 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7745 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7746 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7747 | } |
7748 | ||
32603266 | 7749 | delete stop_reply; |
74531fed PA |
7750 | return ptid; |
7751 | } | |
7752 | ||
7753 | /* The non-stop mode version of target_wait. */ | |
7754 | ||
6b8edb51 PA |
7755 | ptid_t |
7756 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) | |
74531fed PA |
7757 | { |
7758 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7759 | struct stop_reply *stop_reply; |
7760 | int ret; | |
fee9eda9 | 7761 | int is_notif = 0; |
74531fed PA |
7762 | |
7763 | /* If in non-stop mode, get out of getpkt even if a | |
7764 | notification is received. */ | |
7765 | ||
8d64371b | 7766 | ret = getpkt_or_notif_sane (&rs->buf, 0 /* forever */, &is_notif); |
74531fed PA |
7767 | while (1) |
7768 | { | |
fee9eda9 | 7769 | if (ret != -1 && !is_notif) |
74531fed PA |
7770 | switch (rs->buf[0]) |
7771 | { | |
7772 | case 'E': /* Error of some sort. */ | |
7773 | /* We're out of sync with the target now. Did it continue | |
7774 | or not? We can't tell which thread it was in non-stop, | |
7775 | so just ignore this. */ | |
8d64371b | 7776 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
74531fed PA |
7777 | break; |
7778 | case 'O': /* Console output. */ | |
8d64371b | 7779 | remote_console_output (&rs->buf[1]); |
74531fed PA |
7780 | break; |
7781 | default: | |
8d64371b | 7782 | warning (_("Invalid remote reply: %s"), rs->buf.data ()); |
74531fed PA |
7783 | break; |
7784 | } | |
7785 | ||
7786 | /* Acknowledge a pending stop reply that may have arrived in the | |
7787 | mean time. */ | |
f48ff2a7 | 7788 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7789 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7790 | |
7791 | /* If indeed we noticed a stop reply, we're done. */ | |
7792 | stop_reply = queued_stop_reply (ptid); | |
7793 | if (stop_reply != NULL) | |
7794 | return process_stop_reply (stop_reply, status); | |
7795 | ||
47608cb1 | 7796 | /* Still no event. If we're just polling for an event, then |
74531fed | 7797 | return to the event loop. */ |
47608cb1 | 7798 | if (options & TARGET_WNOHANG) |
74531fed PA |
7799 | { |
7800 | status->kind = TARGET_WAITKIND_IGNORE; | |
7801 | return minus_one_ptid; | |
7802 | } | |
7803 | ||
47608cb1 | 7804 | /* Otherwise do a blocking wait. */ |
8d64371b | 7805 | ret = getpkt_or_notif_sane (&rs->buf, 1 /* forever */, &is_notif); |
74531fed PA |
7806 | } |
7807 | } | |
7808 | ||
31ba933e PA |
7809 | /* Return the first resumed thread. */ |
7810 | ||
7811 | static ptid_t | |
5b6d1e4f | 7812 | first_remote_resumed_thread (remote_target *target) |
31ba933e | 7813 | { |
5b6d1e4f | 7814 | for (thread_info *tp : all_non_exited_threads (target, minus_one_ptid)) |
31ba933e PA |
7815 | if (tp->resumed) |
7816 | return tp->ptid; | |
7817 | return null_ptid; | |
7818 | } | |
7819 | ||
74531fed PA |
7820 | /* Wait until the remote machine stops, then return, storing status in |
7821 | STATUS just as `wait' would. */ | |
7822 | ||
6b8edb51 PA |
7823 | ptid_t |
7824 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, int options) | |
74531fed PA |
7825 | { |
7826 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7827 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7828 | char *buf; |
74531fed PA |
7829 | struct stop_reply *stop_reply; |
7830 | ||
47608cb1 PA |
7831 | again: |
7832 | ||
74531fed PA |
7833 | status->kind = TARGET_WAITKIND_IGNORE; |
7834 | status->value.integer = 0; | |
7835 | ||
7836 | stop_reply = queued_stop_reply (ptid); | |
7837 | if (stop_reply != NULL) | |
7838 | return process_stop_reply (stop_reply, status); | |
7839 | ||
7840 | if (rs->cached_wait_status) | |
7841 | /* Use the cached wait status, but only once. */ | |
7842 | rs->cached_wait_status = 0; | |
7843 | else | |
7844 | { | |
7845 | int ret; | |
722247f1 | 7846 | int is_notif; |
567420d1 | 7847 | int forever = ((options & TARGET_WNOHANG) == 0 |
6b8edb51 | 7848 | && rs->wait_forever_enabled_p); |
567420d1 PA |
7849 | |
7850 | if (!rs->waiting_for_stop_reply) | |
7851 | { | |
7852 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7853 | return minus_one_ptid; | |
7854 | } | |
74531fed | 7855 | |
74531fed PA |
7856 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7857 | _never_ wait for ever -> test on target_is_async_p(). | |
7858 | However, before we do that we need to ensure that the caller | |
7859 | knows how to take the target into/out of async mode. */ | |
8d64371b | 7860 | ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif); |
722247f1 YQ |
7861 | |
7862 | /* GDB gets a notification. Return to core as this event is | |
7863 | not interesting. */ | |
7864 | if (ret != -1 && is_notif) | |
7865 | return minus_one_ptid; | |
567420d1 PA |
7866 | |
7867 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7868 | return minus_one_ptid; | |
74531fed PA |
7869 | } |
7870 | ||
8d64371b | 7871 | buf = rs->buf.data (); |
74531fed | 7872 | |
3a29589a DJ |
7873 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7874 | an 'F' or 'O' packet. */ | |
7875 | if (buf[0] != 'F' && buf[0] != 'O') | |
7876 | rs->ctrlc_pending_p = 0; | |
7877 | ||
74531fed PA |
7878 | switch (buf[0]) |
7879 | { | |
7880 | case 'E': /* Error of some sort. */ | |
7881 | /* We're out of sync with the target now. Did it continue or | |
7882 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7883 | rs->waiting_for_stop_reply = 0; |
7884 | ||
74531fed PA |
7885 | warning (_("Remote failure reply: %s"), buf); |
7886 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7887 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7888 | break; |
7889 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7890 | /* GDB may access the inferior memory while handling the File-I/O |
7891 | request, but we don't want GDB accessing memory while waiting | |
7892 | for a stop reply. See the comments in putpkt_binary. Set | |
7893 | waiting_for_stop_reply to 0 temporarily. */ | |
7894 | rs->waiting_for_stop_reply = 0; | |
6b8edb51 | 7895 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); |
3a29589a | 7896 | rs->ctrlc_pending_p = 0; |
e42e5352 YQ |
7897 | /* GDB handled the File-I/O request, and the target is running |
7898 | again. Keep waiting for events. */ | |
7899 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7900 | break; |
f2faf941 | 7901 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7902 | { |
29090fb6 LM |
7903 | /* There is a stop reply to handle. */ |
7904 | rs->waiting_for_stop_reply = 0; | |
7905 | ||
7906 | stop_reply | |
6b8edb51 PA |
7907 | = (struct stop_reply *) remote_notif_parse (this, |
7908 | ¬if_client_stop, | |
8d64371b | 7909 | rs->buf.data ()); |
74531fed | 7910 | |
74531fed | 7911 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7912 | break; |
7913 | } | |
7914 | case 'O': /* Console output. */ | |
7915 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7916 | break; |
7917 | case '\0': | |
b73be471 | 7918 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7919 | { |
7920 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7921 | remote system doesn't support it. */ | |
223ffa71 | 7922 | target_terminal::ours_for_output (); |
c8e38a49 PA |
7923 | printf_filtered |
7924 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7925 | gdb_signal_to_name (rs->last_sent_signal)); |
7926 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 7927 | target_terminal::inferior (); |
c8e38a49 | 7928 | |
f5c4fcd9 TT |
7929 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7930 | putpkt (buf); | |
c8e38a49 | 7931 | break; |
43ff13b4 | 7932 | } |
86a73007 | 7933 | /* fallthrough */ |
c8e38a49 PA |
7934 | default: |
7935 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7936 | break; |
43ff13b4 | 7937 | } |
c8e38a49 | 7938 | |
f2faf941 PA |
7939 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7940 | return minus_one_ptid; | |
7941 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7942 | { |
7943 | /* Nothing interesting happened. If we're doing a non-blocking | |
7944 | poll, we're done. Otherwise, go back to waiting. */ | |
7945 | if (options & TARGET_WNOHANG) | |
7946 | return minus_one_ptid; | |
7947 | else | |
7948 | goto again; | |
7949 | } | |
74531fed PA |
7950 | else if (status->kind != TARGET_WAITKIND_EXITED |
7951 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 | 7952 | { |
d7e15655 | 7953 | if (event_ptid != null_ptid) |
47f8a51d | 7954 | record_currthread (rs, event_ptid); |
82f73884 | 7955 | else |
5b6d1e4f | 7956 | event_ptid = first_remote_resumed_thread (this); |
43ff13b4 | 7957 | } |
74531fed | 7958 | else |
e7af6c70 TBA |
7959 | { |
7960 | /* A process exit. Invalidate our notion of current thread. */ | |
7961 | record_currthread (rs, minus_one_ptid); | |
7962 | /* It's possible that the packet did not include a pid. */ | |
7963 | if (event_ptid == null_ptid) | |
5b6d1e4f | 7964 | event_ptid = first_remote_resumed_thread (this); |
e7af6c70 TBA |
7965 | /* EVENT_PTID could still be NULL_PTID. Double-check. */ |
7966 | if (event_ptid == null_ptid) | |
7967 | event_ptid = magic_null_ptid; | |
7968 | } | |
79d7f229 | 7969 | |
82f73884 | 7970 | return event_ptid; |
43ff13b4 JM |
7971 | } |
7972 | ||
74531fed PA |
7973 | /* Wait until the remote machine stops, then return, storing status in |
7974 | STATUS just as `wait' would. */ | |
7975 | ||
f6ac5f3d PA |
7976 | ptid_t |
7977 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, int options) | |
c8e38a49 PA |
7978 | { |
7979 | ptid_t event_ptid; | |
7980 | ||
6efcd9a8 | 7981 | if (target_is_non_stop_p ()) |
6b8edb51 | 7982 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 7983 | else |
6b8edb51 | 7984 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 7985 | |
d9d41e78 | 7986 | if (target_is_async_p ()) |
c8e38a49 | 7987 | { |
6b8edb51 PA |
7988 | remote_state *rs = get_remote_state (); |
7989 | ||
74531fed PA |
7990 | /* If there are are events left in the queue tell the event loop |
7991 | to return here. */ | |
953edf2b | 7992 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7993 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
c8e38a49 | 7994 | } |
c8e38a49 PA |
7995 | |
7996 | return event_ptid; | |
7997 | } | |
7998 | ||
74ca34ce | 7999 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 8000 | |
6b8edb51 PA |
8001 | int |
8002 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
8003 | packet_reg *reg) | |
b96ec7ac | 8004 | { |
ac7936df | 8005 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 8006 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8007 | char *buf, *p; |
9890e433 | 8008 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
8009 | int i; |
8010 | ||
4082afcc | 8011 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
8012 | return 0; |
8013 | ||
8014 | if (reg->pnum == -1) | |
8015 | return 0; | |
8016 | ||
8d64371b | 8017 | p = rs->buf.data (); |
fcad0fa4 | 8018 | *p++ = 'p'; |
74ca34ce | 8019 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 8020 | *p++ = '\0'; |
1f4437a4 | 8021 | putpkt (rs->buf); |
8d64371b | 8022 | getpkt (&rs->buf, 0); |
3f9a994c | 8023 | |
8d64371b | 8024 | buf = rs->buf.data (); |
2e9f7625 | 8025 | |
8d64371b | 8026 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_p])) |
74ca34ce DJ |
8027 | { |
8028 | case PACKET_OK: | |
8029 | break; | |
8030 | case PACKET_UNKNOWN: | |
8031 | return 0; | |
8032 | case PACKET_ERROR: | |
27a9c0bf | 8033 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 8034 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
8035 | reg->regnum), |
8036 | buf); | |
74ca34ce | 8037 | } |
3f9a994c JB |
8038 | |
8039 | /* If this register is unfetchable, tell the regcache. */ | |
8040 | if (buf[0] == 'x') | |
8480adf2 | 8041 | { |
73e1c03f | 8042 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 8043 | return 1; |
b96ec7ac | 8044 | } |
b96ec7ac | 8045 | |
3f9a994c JB |
8046 | /* Otherwise, parse and supply the value. */ |
8047 | p = buf; | |
8048 | i = 0; | |
8049 | while (p[0] != 0) | |
8050 | { | |
8051 | if (p[1] == 0) | |
74ca34ce | 8052 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
8053 | |
8054 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8055 | p += 2; | |
8056 | } | |
73e1c03f | 8057 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 8058 | return 1; |
b96ec7ac AC |
8059 | } |
8060 | ||
74ca34ce DJ |
8061 | /* Fetch the registers included in the target's 'g' packet. */ |
8062 | ||
6b8edb51 PA |
8063 | int |
8064 | remote_target::send_g_packet () | |
c906108c | 8065 | { |
d01949b6 | 8066 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 8067 | int buf_len; |
c906108c | 8068 | |
8d64371b | 8069 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "g"); |
b75abf5b | 8070 | putpkt (rs->buf); |
8d64371b | 8071 | getpkt (&rs->buf, 0); |
b75abf5b AK |
8072 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
8073 | error (_("Could not read registers; remote failure reply '%s'"), | |
8d64371b | 8074 | rs->buf.data ()); |
c906108c | 8075 | |
29709017 DJ |
8076 | /* We can get out of synch in various cases. If the first character |
8077 | in the buffer is not a hex character, assume that has happened | |
8078 | and try to fetch another packet to read. */ | |
8079 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
8080 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
8081 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
8082 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
8083 | { | |
8084 | if (remote_debug) | |
8085 | fprintf_unfiltered (gdb_stdlog, | |
8086 | "Bad register packet; fetching a new packet\n"); | |
8d64371b | 8087 | getpkt (&rs->buf, 0); |
29709017 DJ |
8088 | } |
8089 | ||
8d64371b | 8090 | buf_len = strlen (rs->buf.data ()); |
74ca34ce DJ |
8091 | |
8092 | /* Sanity check the received packet. */ | |
8093 | if (buf_len % 2 != 0) | |
8d64371b | 8094 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf.data ()); |
29709017 DJ |
8095 | |
8096 | return buf_len / 2; | |
8097 | } | |
8098 | ||
6b8edb51 PA |
8099 | void |
8100 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 8101 | { |
ac7936df | 8102 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 8103 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8104 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
8105 | int i, buf_len; |
8106 | char *p; | |
8107 | char *regs; | |
8108 | ||
8d64371b | 8109 | buf_len = strlen (rs->buf.data ()); |
29709017 DJ |
8110 | |
8111 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 8112 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 | 8113 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8d64371b TT |
8114 | "bytes): %s"), |
8115 | rsa->sizeof_g_packet, buf_len / 2, | |
8116 | rs->buf.data ()); | |
74ca34ce DJ |
8117 | |
8118 | /* Save the size of the packet sent to us by the target. It is used | |
8119 | as a heuristic when determining the max size of packets that the | |
8120 | target can safely receive. */ | |
8121 | if (rsa->actual_register_packet_size == 0) | |
8122 | rsa->actual_register_packet_size = buf_len; | |
8123 | ||
8124 | /* If this is smaller than we guessed the 'g' packet would be, | |
8125 | update our records. A 'g' reply that doesn't include a register's | |
8126 | value implies either that the register is not available, or that | |
8127 | the 'p' packet must be used. */ | |
8128 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8129 | { |
9dc193c3 | 8130 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8131 | |
4a22f64d | 8132 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8133 | { |
9dc193c3 LF |
8134 | long offset = rsa->regs[i].offset; |
8135 | long reg_size = register_size (gdbarch, i); | |
8136 | ||
74ca34ce DJ |
8137 | if (rsa->regs[i].pnum == -1) |
8138 | continue; | |
8139 | ||
9dc193c3 | 8140 | if (offset >= sizeof_g_packet) |
74ca34ce | 8141 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8142 | else if (offset + reg_size > sizeof_g_packet) |
8143 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8144 | else |
74ca34ce | 8145 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8146 | } |
9dc193c3 LF |
8147 | |
8148 | /* Looks valid enough, we can assume this is the correct length | |
8149 | for a 'g' packet. It's important not to adjust | |
8150 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8151 | this "if" won't be run the next time the method is called | |
8152 | with a packet of the same size and one of the internal errors | |
8153 | below will trigger instead. */ | |
8154 | rsa->sizeof_g_packet = sizeof_g_packet; | |
74ca34ce | 8155 | } |
b323314b | 8156 | |
224c3ddb | 8157 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8158 | |
8159 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8160 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8161 | |
c906108c SS |
8162 | /* Reply describes registers byte by byte, each byte encoded as two |
8163 | hex characters. Suck them all up, then supply them to the | |
8164 | register cacheing/storage mechanism. */ | |
8165 | ||
8d64371b | 8166 | p = rs->buf.data (); |
ea9c271d | 8167 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8168 | { |
74ca34ce DJ |
8169 | if (p[0] == 0 || p[1] == 0) |
8170 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
8171 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8172 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 8173 | |
c906108c | 8174 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8175 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8176 | else |
8177 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8178 | p += 2; | |
8179 | } | |
8180 | ||
a744cf53 MS |
8181 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8182 | { | |
8183 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8184 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8185 | |
8186 | if (r->in_g_packet) | |
8187 | { | |
8d64371b | 8188 | if ((r->offset + reg_size) * 2 > strlen (rs->buf.data ())) |
a744cf53 MS |
8189 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
8190 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8191 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8192 | else if (rs->buf[r->offset * 2] == 'x') |
8193 | { | |
8d64371b | 8194 | gdb_assert (r->offset * 2 < strlen (rs->buf.data ())); |
a744cf53 MS |
8195 | /* The register isn't available, mark it as such (at |
8196 | the same time setting the value to zero). */ | |
73e1c03f | 8197 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8198 | } |
8199 | else | |
73e1c03f | 8200 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8201 | } |
8202 | } | |
c906108c SS |
8203 | } |
8204 | ||
6b8edb51 PA |
8205 | void |
8206 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8207 | { |
8208 | send_g_packet (); | |
56be3814 | 8209 | process_g_packet (regcache); |
29709017 DJ |
8210 | } |
8211 | ||
e6e4e701 PA |
8212 | /* Make the remote selected traceframe match GDB's selected |
8213 | traceframe. */ | |
8214 | ||
6b8edb51 PA |
8215 | void |
8216 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8217 | { |
8218 | int newnum; | |
262e1174 | 8219 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8220 | |
262e1174 | 8221 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8222 | return; |
8223 | ||
8224 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8225 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8226 | |
8227 | newnum = target_trace_find (tfind_number, | |
8228 | get_traceframe_number (), 0, 0, NULL); | |
8229 | ||
8230 | /* Should not happen. If it does, all bets are off. */ | |
8231 | if (newnum != get_traceframe_number ()) | |
8232 | warning (_("could not set remote traceframe")); | |
8233 | } | |
8234 | ||
f6ac5f3d PA |
8235 | void |
8236 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8237 | { |
ac7936df | 8238 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8239 | struct remote_state *rs = get_remote_state (); |
8240 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8241 | int i; |
8242 | ||
e6e4e701 | 8243 | set_remote_traceframe (); |
222312d3 | 8244 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8245 | |
8246 | if (regnum >= 0) | |
8247 | { | |
5cd63fda | 8248 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8249 | |
74ca34ce DJ |
8250 | gdb_assert (reg != NULL); |
8251 | ||
8252 | /* If this register might be in the 'g' packet, try that first - | |
8253 | we are likely to read more than one register. If this is the | |
8254 | first 'g' packet, we might be overly optimistic about its | |
8255 | contents, so fall back to 'p'. */ | |
8256 | if (reg->in_g_packet) | |
8257 | { | |
56be3814 | 8258 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8259 | if (reg->in_g_packet) |
8260 | return; | |
8261 | } | |
8262 | ||
56be3814 | 8263 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8264 | return; |
8265 | ||
8266 | /* This register is not available. */ | |
73e1c03f | 8267 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8268 | |
8269 | return; | |
8270 | } | |
8271 | ||
56be3814 | 8272 | fetch_registers_using_g (regcache); |
74ca34ce | 8273 | |
5cd63fda | 8274 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8275 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8276 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8277 | { |
8278 | /* This register is not available. */ | |
73e1c03f | 8279 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8280 | } |
8281 | } | |
8282 | ||
c906108c SS |
8283 | /* Prepare to store registers. Since we may send them all (using a |
8284 | 'G' request), we have to read out the ones we don't want to change | |
8285 | first. */ | |
8286 | ||
f6ac5f3d PA |
8287 | void |
8288 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8289 | { |
9d6eea31 PA |
8290 | struct remote_state *rs = get_remote_state (); |
8291 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8292 | int i; |
cf0e1e0d | 8293 | |
c906108c | 8294 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8295 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8296 | { |
8297 | case PACKET_DISABLE: | |
8298 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8299 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8300 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8301 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8302 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8303 | break; |
8304 | case PACKET_ENABLE: | |
8305 | break; | |
8306 | } | |
8307 | } | |
8308 | ||
ad10f812 | 8309 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8310 | packet was not recognized. */ |
5a2468f5 | 8311 | |
6b8edb51 PA |
8312 | int |
8313 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8314 | packet_reg *reg) | |
5a2468f5 | 8315 | { |
ac7936df | 8316 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8317 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8318 | /* Try storing a single register. */ |
8d64371b | 8319 | char *buf = rs->buf.data (); |
9890e433 | 8320 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8321 | char *p; |
5a2468f5 | 8322 | |
4082afcc | 8323 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8324 | return 0; |
8325 | ||
8326 | if (reg->pnum == -1) | |
8327 | return 0; | |
8328 | ||
ea9c271d | 8329 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8330 | p = buf + strlen (buf); |
34a79281 | 8331 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8332 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 | 8333 | putpkt (rs->buf); |
8d64371b | 8334 | getpkt (&rs->buf, 0); |
5a2468f5 | 8335 | |
74ca34ce DJ |
8336 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8337 | { | |
8338 | case PACKET_OK: | |
8339 | return 1; | |
8340 | case PACKET_ERROR: | |
27a9c0bf | 8341 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8d64371b | 8342 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf.data ()); |
74ca34ce DJ |
8343 | case PACKET_UNKNOWN: |
8344 | return 0; | |
8345 | default: | |
8346 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8347 | } | |
c906108c SS |
8348 | } |
8349 | ||
23860348 MS |
8350 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8351 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8352 | |
6b8edb51 PA |
8353 | void |
8354 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8355 | { |
d01949b6 | 8356 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8357 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8358 | gdb_byte *regs; |
c906108c SS |
8359 | char *p; |
8360 | ||
193cb69f AC |
8361 | /* Extract all the registers in the regcache copying them into a |
8362 | local buffer. */ | |
8363 | { | |
b323314b | 8364 | int i; |
a744cf53 | 8365 | |
224c3ddb | 8366 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8367 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8368 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8369 | { |
ea9c271d | 8370 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8371 | |
b323314b | 8372 | if (r->in_g_packet) |
34a79281 | 8373 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8374 | } |
8375 | } | |
c906108c SS |
8376 | |
8377 | /* Command describes registers byte by byte, | |
8378 | each byte encoded as two hex characters. */ | |
8d64371b | 8379 | p = rs->buf.data (); |
193cb69f | 8380 | *p++ = 'G'; |
74ca34ce | 8381 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 | 8382 | putpkt (rs->buf); |
8d64371b | 8383 | getpkt (&rs->buf, 0); |
1f4437a4 | 8384 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
27a9c0bf | 8385 | error (_("Could not write registers; remote failure reply '%s'"), |
8d64371b | 8386 | rs->buf.data ()); |
c906108c | 8387 | } |
74ca34ce DJ |
8388 | |
8389 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8390 | of the register cache buffer. FIXME: ignores errors. */ | |
8391 | ||
f6ac5f3d PA |
8392 | void |
8393 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8394 | { |
5cd63fda | 8395 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8396 | struct remote_state *rs = get_remote_state (); |
8397 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8398 | int i; |
8399 | ||
e6e4e701 | 8400 | set_remote_traceframe (); |
222312d3 | 8401 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8402 | |
8403 | if (regnum >= 0) | |
8404 | { | |
5cd63fda | 8405 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8406 | |
74ca34ce DJ |
8407 | gdb_assert (reg != NULL); |
8408 | ||
8409 | /* Always prefer to store registers using the 'P' packet if | |
8410 | possible; we often change only a small number of registers. | |
8411 | Sometimes we change a larger number; we'd need help from a | |
8412 | higher layer to know to use 'G'. */ | |
56be3814 | 8413 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8414 | return; |
8415 | ||
8416 | /* For now, don't complain if we have no way to write the | |
8417 | register. GDB loses track of unavailable registers too | |
8418 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8419 | any way to read the register, either... */ |
74ca34ce DJ |
8420 | if (!reg->in_g_packet) |
8421 | return; | |
8422 | ||
56be3814 | 8423 | store_registers_using_G (regcache); |
74ca34ce DJ |
8424 | return; |
8425 | } | |
8426 | ||
56be3814 | 8427 | store_registers_using_G (regcache); |
74ca34ce | 8428 | |
5cd63fda | 8429 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8430 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8431 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8432 | /* See above for why we do not issue an error here. */ |
8433 | continue; | |
8434 | } | |
c906108c SS |
8435 | \f |
8436 | ||
8437 | /* Return the number of hex digits in num. */ | |
8438 | ||
8439 | static int | |
fba45db2 | 8440 | hexnumlen (ULONGEST num) |
c906108c SS |
8441 | { |
8442 | int i; | |
8443 | ||
8444 | for (i = 0; num != 0; i++) | |
8445 | num >>= 4; | |
8446 | ||
325fac50 | 8447 | return std::max (i, 1); |
c906108c SS |
8448 | } |
8449 | ||
2df3850c | 8450 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8451 | |
8452 | static int | |
fba45db2 | 8453 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8454 | { |
c906108c | 8455 | int len = hexnumlen (num); |
a744cf53 | 8456 | |
2df3850c JM |
8457 | return hexnumnstr (buf, num, len); |
8458 | } | |
8459 | ||
c906108c | 8460 | |
2df3850c | 8461 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8462 | |
2df3850c | 8463 | static int |
fba45db2 | 8464 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8465 | { |
8466 | int i; | |
8467 | ||
8468 | buf[width] = '\0'; | |
8469 | ||
8470 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8471 | { |
c5aa993b | 8472 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8473 | num >>= 4; |
8474 | } | |
8475 | ||
2df3850c | 8476 | return width; |
c906108c SS |
8477 | } |
8478 | ||
23860348 | 8479 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8480 | |
8481 | static CORE_ADDR | |
fba45db2 | 8482 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8483 | { |
883b9c6c | 8484 | unsigned int address_size = remote_address_size; |
a744cf53 | 8485 | |
911c95a5 UW |
8486 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8487 | if (!address_size) | |
f5656ead | 8488 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8489 | |
8490 | if (address_size > 0 | |
8491 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8492 | { |
8493 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 8494 | in a ULONGEST variable. */ |
c906108c | 8495 | ULONGEST mask = 1; |
a744cf53 | 8496 | |
911c95a5 | 8497 | mask = (mask << address_size) - 1; |
c906108c SS |
8498 | addr &= mask; |
8499 | } | |
8500 | return addr; | |
8501 | } | |
8502 | ||
8503 | /* Determine whether the remote target supports binary downloading. | |
8504 | This is accomplished by sending a no-op memory write of zero length | |
8505 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8506 | the whole packet, since many stubs strip the eighth bit and |
8507 | subsequently compute a wrong checksum, which causes real havoc with | |
8508 | remote_write_bytes. | |
7a292a7a | 8509 | |
96baa820 | 8510 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8511 | clean. In cases like this, the user should clear "remote |
23860348 | 8512 | X-packet". */ |
96baa820 | 8513 | |
6b8edb51 PA |
8514 | void |
8515 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 8516 | { |
d01949b6 | 8517 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8518 | |
4082afcc | 8519 | switch (packet_support (PACKET_X)) |
c906108c | 8520 | { |
96baa820 JM |
8521 | case PACKET_DISABLE: |
8522 | break; | |
8523 | case PACKET_ENABLE: | |
8524 | break; | |
8525 | case PACKET_SUPPORT_UNKNOWN: | |
8526 | { | |
96baa820 | 8527 | char *p; |
802188a7 | 8528 | |
8d64371b | 8529 | p = rs->buf.data (); |
96baa820 JM |
8530 | *p++ = 'X'; |
8531 | p += hexnumstr (p, (ULONGEST) addr); | |
8532 | *p++ = ','; | |
8533 | p += hexnumstr (p, (ULONGEST) 0); | |
8534 | *p++ = ':'; | |
8535 | *p = '\0'; | |
802188a7 | 8536 | |
8d64371b TT |
8537 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8538 | getpkt (&rs->buf, 0); | |
c906108c | 8539 | |
2e9f7625 | 8540 | if (rs->buf[0] == '\0') |
96baa820 JM |
8541 | { |
8542 | if (remote_debug) | |
8543 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8544 | "binary downloading NOT " |
8545 | "supported by target\n"); | |
444abaca | 8546 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8547 | } |
8548 | else | |
8549 | { | |
8550 | if (remote_debug) | |
8551 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8552 | "binary downloading supported by target\n"); |
444abaca | 8553 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8554 | } |
8555 | break; | |
8556 | } | |
c906108c SS |
8557 | } |
8558 | } | |
8559 | ||
124e13d9 SM |
8560 | /* Helper function to resize the payload in order to try to get a good |
8561 | alignment. We try to write an amount of data such that the next write will | |
8562 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8563 | ||
8564 | static int | |
8565 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8566 | { | |
8567 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8568 | } | |
8569 | ||
c906108c SS |
8570 | /* Write memory data directly to the remote machine. |
8571 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8572 | HEADER is the starting part of the packet. |
c906108c SS |
8573 | MEMADDR is the address in the remote memory space. |
8574 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8575 | LEN_UNITS is the number of addressable units to write. |
8576 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8577 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8578 | should send data as binary ('X'), or hex-encoded ('M'). | |
8579 | ||
8580 | The function creates packet of the form | |
8581 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8582 | ||
124e13d9 | 8583 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8584 | |
8585 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8586 | are omitted. | |
8587 | ||
9b409511 | 8588 | Return the transferred status, error or OK (an |
124e13d9 SM |
8589 | 'enum target_xfer_status' value). Save the number of addressable units |
8590 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8591 | ||
8592 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8593 | exchange between gdb and the stub could look like (?? in place of the | |
8594 | checksum): | |
8595 | ||
8596 | -> $m1000,4#?? | |
8597 | <- aaaabbbbccccdddd | |
8598 | ||
8599 | -> $M1000,3:eeeeffffeeee#?? | |
8600 | <- OK | |
8601 | ||
8602 | -> $m1000,4#?? | |
8603 | <- eeeeffffeeeedddd */ | |
c906108c | 8604 | |
6b8edb51 PA |
8605 | target_xfer_status |
8606 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
8607 | const gdb_byte *myaddr, | |
8608 | ULONGEST len_units, | |
8609 | int unit_size, | |
8610 | ULONGEST *xfered_len_units, | |
8611 | char packet_format, int use_length) | |
c906108c | 8612 | { |
6d820c5c | 8613 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8614 | char *p; |
a76d924d DJ |
8615 | char *plen = NULL; |
8616 | int plenlen = 0; | |
124e13d9 SM |
8617 | int todo_units; |
8618 | int units_written; | |
8619 | int payload_capacity_bytes; | |
8620 | int payload_length_bytes; | |
a76d924d DJ |
8621 | |
8622 | if (packet_format != 'X' && packet_format != 'M') | |
8623 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8624 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8625 | |
124e13d9 | 8626 | if (len_units == 0) |
9b409511 | 8627 | return TARGET_XFER_EOF; |
b2182ed2 | 8628 | |
124e13d9 | 8629 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8630 | |
6d820c5c DJ |
8631 | /* The packet buffer will be large enough for the payload; |
8632 | get_memory_packet_size ensures this. */ | |
a76d924d | 8633 | rs->buf[0] = '\0'; |
c906108c | 8634 | |
a257b5bb | 8635 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8636 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8637 | ||
124e13d9 | 8638 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8639 | if (!use_length) |
0df8b418 | 8640 | /* The comma won't be used. */ |
124e13d9 SM |
8641 | payload_capacity_bytes += 1; |
8642 | payload_capacity_bytes -= strlen (header); | |
8643 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8644 | |
a76d924d | 8645 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8646 | |
8d64371b TT |
8647 | strcat (rs->buf.data (), header); |
8648 | p = rs->buf.data () + strlen (header); | |
a76d924d DJ |
8649 | |
8650 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8651 | if (packet_format == 'X') | |
c906108c | 8652 | { |
23860348 | 8653 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8654 | todo_units = std::min (len_units, |
8655 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8656 | if (use_length) |
124e13d9 | 8657 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8658 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8659 | } |
8660 | else | |
8661 | { | |
124e13d9 | 8662 | /* Number of bytes that will fit. */ |
325fac50 PA |
8663 | todo_units |
8664 | = std::min (len_units, | |
8665 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8666 | if (use_length) |
124e13d9 | 8667 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8668 | todo_units = std::min (todo_units, |
8669 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8670 | } |
a76d924d | 8671 | |
124e13d9 | 8672 | if (todo_units <= 0) |
3de11b2e | 8673 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8674 | _("minimum packet size too small to write data")); |
802188a7 | 8675 | |
6765f3e5 DJ |
8676 | /* If we already need another packet, then try to align the end |
8677 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8678 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8679 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8680 | |
a257b5bb | 8681 | /* Append "<memaddr>". */ |
917317f4 JM |
8682 | memaddr = remote_address_masked (memaddr); |
8683 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8684 | |
a76d924d DJ |
8685 | if (use_length) |
8686 | { | |
8687 | /* Append ",". */ | |
8688 | *p++ = ','; | |
802188a7 | 8689 | |
124e13d9 SM |
8690 | /* Append the length and retain its location and size. It may need to be |
8691 | adjusted once the packet body has been created. */ | |
a76d924d | 8692 | plen = p; |
124e13d9 | 8693 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8694 | p += plenlen; |
8695 | } | |
a257b5bb AC |
8696 | |
8697 | /* Append ":". */ | |
917317f4 JM |
8698 | *p++ = ':'; |
8699 | *p = '\0'; | |
802188a7 | 8700 | |
a257b5bb | 8701 | /* Append the packet body. */ |
a76d924d | 8702 | if (packet_format == 'X') |
917317f4 | 8703 | { |
917317f4 JM |
8704 | /* Binary mode. Send target system values byte by byte, in |
8705 | increasing byte addresses. Only escape certain critical | |
8706 | characters. */ | |
124e13d9 SM |
8707 | payload_length_bytes = |
8708 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8709 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8710 | |
124e13d9 | 8711 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8712 | a second try to keep the end of the packet aligned. Don't do |
8713 | this if the packet is tiny. */ | |
124e13d9 | 8714 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8715 | { |
124e13d9 SM |
8716 | int new_todo_units; |
8717 | ||
8718 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8719 | ||
8720 | if (new_todo_units != units_written) | |
8721 | payload_length_bytes = | |
8722 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8723 | (gdb_byte *) p, &units_written, | |
8724 | payload_capacity_bytes); | |
6765f3e5 DJ |
8725 | } |
8726 | ||
124e13d9 SM |
8727 | p += payload_length_bytes; |
8728 | if (use_length && units_written < todo_units) | |
c906108c | 8729 | { |
802188a7 | 8730 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8731 | and we have actually sent fewer units than planned. |
917317f4 JM |
8732 | Fix-up the length field of the packet. Use the same |
8733 | number of characters as before. */ | |
124e13d9 SM |
8734 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8735 | plenlen); | |
917317f4 | 8736 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8737 | } |
a76d924d DJ |
8738 | } |
8739 | else | |
8740 | { | |
917317f4 JM |
8741 | /* Normal mode: Send target system values byte by byte, in |
8742 | increasing byte addresses. Each byte is encoded as a two hex | |
8743 | value. */ | |
124e13d9 SM |
8744 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8745 | units_written = todo_units; | |
c906108c | 8746 | } |
802188a7 | 8747 | |
8d64371b TT |
8748 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8749 | getpkt (&rs->buf, 0); | |
802188a7 | 8750 | |
2e9f7625 | 8751 | if (rs->buf[0] == 'E') |
00d84524 | 8752 | return TARGET_XFER_E_IO; |
802188a7 | 8753 | |
124e13d9 SM |
8754 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8755 | send fewer units than we'd planned. */ | |
8756 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 8757 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
8758 | } |
8759 | ||
a76d924d DJ |
8760 | /* Write memory data directly to the remote machine. |
8761 | This does not inform the data cache; the data cache uses this. | |
8762 | MEMADDR is the address in the remote memory space. | |
8763 | MYADDR is the address of the buffer in our space. | |
8764 | LEN is the number of bytes. | |
8765 | ||
9b409511 YQ |
8766 | Return the transferred status, error or OK (an |
8767 | 'enum target_xfer_status' value). Save the number of bytes | |
8768 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8769 | |
6b8edb51 PA |
8770 | target_xfer_status |
8771 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
8772 | ULONGEST len, int unit_size, | |
8773 | ULONGEST *xfered_len) | |
a76d924d | 8774 | { |
a121b7c1 | 8775 | const char *packet_format = NULL; |
a76d924d DJ |
8776 | |
8777 | /* Check whether the target supports binary download. */ | |
8778 | check_binary_download (memaddr); | |
8779 | ||
4082afcc | 8780 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8781 | { |
8782 | case PACKET_ENABLE: | |
8783 | packet_format = "X"; | |
8784 | break; | |
8785 | case PACKET_DISABLE: | |
8786 | packet_format = "M"; | |
8787 | break; | |
8788 | case PACKET_SUPPORT_UNKNOWN: | |
8789 | internal_error (__FILE__, __LINE__, | |
8790 | _("remote_write_bytes: bad internal state")); | |
8791 | default: | |
8792 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8793 | } | |
8794 | ||
8795 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8796 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8797 | packet_format[0], 1); |
a76d924d DJ |
8798 | } |
8799 | ||
9217e74e YQ |
8800 | /* Read memory data directly from the remote machine. |
8801 | This does not use the data cache; the data cache uses this. | |
8802 | MEMADDR is the address in the remote memory space. | |
8803 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8804 | LEN_UNITS is the number of addressable memory units to read.. |
8805 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8806 | |
8807 | Return the transferred status, error or OK (an | |
8808 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8809 | transferred in *XFERED_LEN_UNITS. |
8810 | ||
8811 | See the comment of remote_write_bytes_aux for an example of | |
8812 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 8813 | |
6b8edb51 PA |
8814 | target_xfer_status |
8815 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
8816 | ULONGEST len_units, | |
8817 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8818 | { |
8819 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8820 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8821 | char *p; |
124e13d9 SM |
8822 | int todo_units; |
8823 | int decoded_bytes; | |
9217e74e | 8824 | |
124e13d9 | 8825 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8826 | /* The packet buffer will be large enough for the payload; |
8827 | get_memory_packet_size ensures this. */ | |
8828 | ||
124e13d9 | 8829 | /* Number of units that will fit. */ |
325fac50 PA |
8830 | todo_units = std::min (len_units, |
8831 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8832 | |
8833 | /* Construct "m"<memaddr>","<len>". */ | |
8834 | memaddr = remote_address_masked (memaddr); | |
8d64371b | 8835 | p = rs->buf.data (); |
9217e74e YQ |
8836 | *p++ = 'm'; |
8837 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8838 | *p++ = ','; | |
124e13d9 | 8839 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8840 | *p = '\0'; |
8841 | putpkt (rs->buf); | |
8d64371b | 8842 | getpkt (&rs->buf, 0); |
9217e74e YQ |
8843 | if (rs->buf[0] == 'E' |
8844 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8845 | && rs->buf[3] == '\0') | |
8846 | return TARGET_XFER_E_IO; | |
8847 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8848 | characters. */ | |
8d64371b | 8849 | p = rs->buf.data (); |
124e13d9 | 8850 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8851 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8852 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 8853 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
8854 | } |
8855 | ||
b55fbac4 YQ |
8856 | /* Using the set of read-only target sections of remote, read live |
8857 | read-only memory. | |
8acf9577 YQ |
8858 | |
8859 | For interface/parameters/return description see target.h, | |
8860 | to_xfer_partial. */ | |
8861 | ||
6b8edb51 PA |
8862 | target_xfer_status |
8863 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
8864 | ULONGEST memaddr, | |
8865 | ULONGEST len, | |
8866 | int unit_size, | |
8867 | ULONGEST *xfered_len) | |
8acf9577 YQ |
8868 | { |
8869 | struct target_section *secp; | |
8870 | struct target_section_table *table; | |
8871 | ||
6b8edb51 | 8872 | secp = target_section_by_addr (this, memaddr); |
8acf9577 | 8873 | if (secp != NULL |
fd361982 | 8874 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
8acf9577 YQ |
8875 | { |
8876 | struct target_section *p; | |
8877 | ULONGEST memend = memaddr + len; | |
8878 | ||
6b8edb51 | 8879 | table = target_get_section_table (this); |
8acf9577 YQ |
8880 | |
8881 | for (p = table->sections; p < table->sections_end; p++) | |
8882 | { | |
8883 | if (memaddr >= p->addr) | |
8884 | { | |
8885 | if (memend <= p->endaddr) | |
8886 | { | |
8887 | /* Entire transfer is within this section. */ | |
124e13d9 | 8888 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8889 | xfered_len); |
8acf9577 YQ |
8890 | } |
8891 | else if (memaddr >= p->endaddr) | |
8892 | { | |
8893 | /* This section ends before the transfer starts. */ | |
8894 | continue; | |
8895 | } | |
8896 | else | |
8897 | { | |
8898 | /* This section overlaps the transfer. Just do half. */ | |
8899 | len = p->endaddr - memaddr; | |
124e13d9 | 8900 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8901 | xfered_len); |
8acf9577 YQ |
8902 | } |
8903 | } | |
8904 | } | |
8905 | } | |
8906 | ||
8907 | return TARGET_XFER_EOF; | |
8908 | } | |
8909 | ||
9217e74e YQ |
8910 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8911 | first if the requested memory is unavailable in traceframe. | |
8912 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8913 | |
6b8edb51 PA |
8914 | target_xfer_status |
8915 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
8916 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
8917 | ULONGEST *xfered_len) | |
c906108c | 8918 | { |
6b6aa828 | 8919 | if (len == 0) |
96c4f946 | 8920 | return TARGET_XFER_EOF; |
b2182ed2 | 8921 | |
8acf9577 YQ |
8922 | if (get_traceframe_number () != -1) |
8923 | { | |
a79b1bc6 | 8924 | std::vector<mem_range> available; |
8acf9577 YQ |
8925 | |
8926 | /* If we fail to get the set of available memory, then the | |
8927 | target does not support querying traceframe info, and so we | |
8928 | attempt reading from the traceframe anyway (assuming the | |
8929 | target implements the old QTro packet then). */ | |
8930 | if (traceframe_available_memory (&available, memaddr, len)) | |
8931 | { | |
a79b1bc6 | 8932 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
8933 | { |
8934 | enum target_xfer_status res; | |
8935 | ||
8936 | /* Don't read into the traceframe's available | |
8937 | memory. */ | |
a79b1bc6 | 8938 | if (!available.empty ()) |
8acf9577 YQ |
8939 | { |
8940 | LONGEST oldlen = len; | |
8941 | ||
a79b1bc6 | 8942 | len = available[0].start - memaddr; |
8acf9577 YQ |
8943 | gdb_assert (len <= oldlen); |
8944 | } | |
8945 | ||
8acf9577 | 8946 | /* This goes through the topmost target again. */ |
6b8edb51 | 8947 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 8948 | len, unit_size, xfered_len); |
8acf9577 YQ |
8949 | if (res == TARGET_XFER_OK) |
8950 | return TARGET_XFER_OK; | |
8951 | else | |
8952 | { | |
8953 | /* No use trying further, we know some memory starting | |
8954 | at MEMADDR isn't available. */ | |
8955 | *xfered_len = len; | |
92ffd475 PC |
8956 | return (*xfered_len != 0) ? |
8957 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
8958 | } |
8959 | } | |
8960 | ||
8961 | /* Don't try to read more than how much is available, in | |
8962 | case the target implements the deprecated QTro packet to | |
8963 | cater for older GDBs (the target's knowledge of read-only | |
8964 | sections may be outdated by now). */ | |
a79b1bc6 | 8965 | len = available[0].length; |
8acf9577 YQ |
8966 | } |
8967 | } | |
8968 | ||
124e13d9 | 8969 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8970 | } |
74531fed | 8971 | |
c906108c | 8972 | \f |
c906108c | 8973 | |
a76d924d DJ |
8974 | /* Sends a packet with content determined by the printf format string |
8975 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8976 | whether the packet was a success, a failure, or unknown. */ | |
8977 | ||
6b8edb51 PA |
8978 | packet_result |
8979 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
8980 | { |
8981 | struct remote_state *rs = get_remote_state (); | |
8982 | int max_size = get_remote_packet_size (); | |
a76d924d | 8983 | va_list ap; |
a744cf53 | 8984 | |
a76d924d DJ |
8985 | va_start (ap, format); |
8986 | ||
8987 | rs->buf[0] = '\0'; | |
8d64371b | 8988 | int size = vsnprintf (rs->buf.data (), max_size, format, ap); |
33b031ce GB |
8989 | |
8990 | va_end (ap); | |
8991 | ||
8992 | if (size >= max_size) | |
9b20d036 | 8993 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8994 | |
8995 | if (putpkt (rs->buf) < 0) | |
8996 | error (_("Communication problem with target.")); | |
8997 | ||
8998 | rs->buf[0] = '\0'; | |
8d64371b | 8999 | getpkt (&rs->buf, 0); |
a76d924d DJ |
9000 | |
9001 | return packet_check_result (rs->buf); | |
9002 | } | |
9003 | ||
a76d924d DJ |
9004 | /* Flash writing can take quite some time. We'll set |
9005 | effectively infinite timeout for flash operations. | |
9006 | In future, we'll need to decide on a better approach. */ | |
9007 | static const int remote_flash_timeout = 1000; | |
9008 | ||
f6ac5f3d PA |
9009 | void |
9010 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 9011 | { |
f5656ead | 9012 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 9013 | enum packet_result ret; |
2ec845e7 TT |
9014 | scoped_restore restore_timeout |
9015 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
9016 | |
9017 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 9018 | phex (address, addr_size), |
a76d924d DJ |
9019 | phex (length, 4)); |
9020 | switch (ret) | |
9021 | { | |
9022 | case PACKET_UNKNOWN: | |
9023 | error (_("Remote target does not support flash erase")); | |
9024 | case PACKET_ERROR: | |
9025 | error (_("Error erasing flash with vFlashErase packet")); | |
9026 | default: | |
9027 | break; | |
9028 | } | |
a76d924d DJ |
9029 | } |
9030 | ||
6b8edb51 PA |
9031 | target_xfer_status |
9032 | remote_target::remote_flash_write (ULONGEST address, | |
9033 | ULONGEST length, ULONGEST *xfered_len, | |
9034 | const gdb_byte *data) | |
a76d924d | 9035 | { |
2ec845e7 TT |
9036 | scoped_restore restore_timeout |
9037 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9038 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
9039 | xfered_len,'X', 0); | |
a76d924d DJ |
9040 | } |
9041 | ||
f6ac5f3d PA |
9042 | void |
9043 | remote_target::flash_done () | |
a76d924d | 9044 | { |
a76d924d | 9045 | int ret; |
a76d924d | 9046 | |
2ec845e7 TT |
9047 | scoped_restore restore_timeout |
9048 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9049 | ||
a76d924d | 9050 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
9051 | |
9052 | switch (ret) | |
9053 | { | |
9054 | case PACKET_UNKNOWN: | |
9055 | error (_("Remote target does not support vFlashDone")); | |
9056 | case PACKET_ERROR: | |
9057 | error (_("Error finishing flash operation")); | |
9058 | default: | |
9059 | break; | |
9060 | } | |
9061 | } | |
9062 | ||
f6ac5f3d PA |
9063 | void |
9064 | remote_target::files_info () | |
c906108c SS |
9065 | { |
9066 | puts_filtered ("Debugging a target over a serial line.\n"); | |
9067 | } | |
9068 | \f | |
9069 | /* Stuff for dealing with the packets which are part of this protocol. | |
9070 | See comment at top of file for details. */ | |
9071 | ||
1927e618 PA |
9072 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
9073 | error to higher layers. Called when a serial error is detected. | |
9074 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
9075 | the system error message for errno at function entry and final dot |
9076 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
9077 | |
9078 | static void | |
5b6d1e4f | 9079 | unpush_and_perror (remote_target *target, const char *string) |
1927e618 | 9080 | { |
d6cb50a2 | 9081 | int saved_errno = errno; |
1927e618 | 9082 | |
5b6d1e4f | 9083 | remote_unpush_target (target); |
d6cb50a2 JK |
9084 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
9085 | safe_strerror (saved_errno)); | |
1927e618 PA |
9086 | } |
9087 | ||
048094ac PA |
9088 | /* Read a single character from the remote end. The current quit |
9089 | handler is overridden to avoid quitting in the middle of packet | |
9090 | sequence, as that would break communication with the remote server. | |
9091 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 9092 | |
6b8edb51 PA |
9093 | int |
9094 | remote_target::readchar (int timeout) | |
c906108c SS |
9095 | { |
9096 | int ch; | |
5d93a237 | 9097 | struct remote_state *rs = get_remote_state (); |
048094ac | 9098 | |
2ec845e7 | 9099 | { |
6b8edb51 PA |
9100 | scoped_restore restore_quit_target |
9101 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9102 | scoped_restore restore_quit |
6b8edb51 | 9103 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 9104 | |
2ec845e7 | 9105 | rs->got_ctrlc_during_io = 0; |
c906108c | 9106 | |
2ec845e7 | 9107 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 9108 | |
2ec845e7 TT |
9109 | if (rs->got_ctrlc_during_io) |
9110 | set_quit_flag (); | |
9111 | } | |
048094ac | 9112 | |
2acceee2 | 9113 | if (ch >= 0) |
0876f84a | 9114 | return ch; |
2acceee2 JM |
9115 | |
9116 | switch ((enum serial_rc) ch) | |
c906108c SS |
9117 | { |
9118 | case SERIAL_EOF: | |
5b6d1e4f | 9119 | remote_unpush_target (this); |
598d3636 | 9120 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 9121 | /* no return */ |
c906108c | 9122 | case SERIAL_ERROR: |
5b6d1e4f PA |
9123 | unpush_and_perror (this, _("Remote communication error. " |
9124 | "Target disconnected.")); | |
2acceee2 | 9125 | /* no return */ |
c906108c | 9126 | case SERIAL_TIMEOUT: |
2acceee2 | 9127 | break; |
c906108c | 9128 | } |
2acceee2 | 9129 | return ch; |
c906108c SS |
9130 | } |
9131 | ||
c33e31fd | 9132 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9133 | writing fails. The current quit handler is overridden to avoid |
9134 | quitting in the middle of packet sequence, as that would break | |
9135 | communication with the remote server. See | |
9136 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9137 | |
6b8edb51 PA |
9138 | void |
9139 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9140 | { |
5d93a237 | 9141 | struct remote_state *rs = get_remote_state (); |
048094ac | 9142 | |
6b8edb51 PA |
9143 | scoped_restore restore_quit_target |
9144 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9145 | scoped_restore restore_quit |
6b8edb51 | 9146 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9147 | |
9148 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9149 | |
9150 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9151 | { |
5b6d1e4f PA |
9152 | unpush_and_perror (this, _("Remote communication error. " |
9153 | "Target disconnected.")); | |
c33e31fd | 9154 | } |
048094ac PA |
9155 | |
9156 | if (rs->got_ctrlc_during_io) | |
9157 | set_quit_flag (); | |
c33e31fd PA |
9158 | } |
9159 | ||
b3ced9ba PA |
9160 | /* Return a string representing an escaped version of BUF, of len N. |
9161 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9162 | |
b3ced9ba | 9163 | static std::string |
6e5abd65 PA |
9164 | escape_buffer (const char *buf, int n) |
9165 | { | |
d7e74731 | 9166 | string_file stb; |
6e5abd65 | 9167 | |
d7e74731 PA |
9168 | stb.putstrn (buf, n, '\\'); |
9169 | return std::move (stb.string ()); | |
6e5abd65 PA |
9170 | } |
9171 | ||
c906108c SS |
9172 | /* Display a null-terminated packet on stdout, for debugging, using C |
9173 | string notation. */ | |
9174 | ||
9175 | static void | |
baa336ce | 9176 | print_packet (const char *buf) |
c906108c SS |
9177 | { |
9178 | puts_filtered ("\""); | |
43e526b9 | 9179 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
9180 | puts_filtered ("\""); |
9181 | } | |
9182 | ||
9183 | int | |
6b8edb51 | 9184 | remote_target::putpkt (const char *buf) |
c906108c SS |
9185 | { |
9186 | return putpkt_binary (buf, strlen (buf)); | |
9187 | } | |
9188 | ||
6b8edb51 PA |
9189 | /* Wrapper around remote_target::putpkt to avoid exporting |
9190 | remote_target. */ | |
9191 | ||
9192 | int | |
9193 | putpkt (remote_target *remote, const char *buf) | |
9194 | { | |
9195 | return remote->putpkt (buf); | |
9196 | } | |
9197 | ||
c906108c | 9198 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9199 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9200 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9201 | and for a possible /0 if we are debugging (remote_debug) and want |
9202 | to print the sent packet as a string. */ | |
c906108c | 9203 | |
6b8edb51 PA |
9204 | int |
9205 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9206 | { |
2d717e4f | 9207 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9208 | int i; |
9209 | unsigned char csum = 0; | |
b80406ac TT |
9210 | gdb::def_vector<char> data (cnt + 6); |
9211 | char *buf2 = data.data (); | |
085dd6e6 | 9212 | |
c906108c SS |
9213 | int ch; |
9214 | int tcount = 0; | |
9215 | char *p; | |
9216 | ||
e24a49d8 PA |
9217 | /* Catch cases like trying to read memory or listing threads while |
9218 | we're waiting for a stop reply. The remote server wouldn't be | |
9219 | ready to handle this request, so we'd hang and timeout. We don't | |
9220 | have to worry about this in synchronous mode, because in that | |
9221 | case it's not possible to issue a command while the target is | |
74531fed PA |
9222 | running. This is not a problem in non-stop mode, because in that |
9223 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9224 | if (!target_is_non_stop_p () |
9225 | && target_is_async_p () | |
9226 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9227 | { |
9228 | error (_("Cannot execute this command while the target is running.\n" | |
9229 | "Use the \"interrupt\" command to stop the target\n" | |
9230 | "and then try again.")); | |
9231 | } | |
e24a49d8 | 9232 | |
2d717e4f DJ |
9233 | /* We're sending out a new packet. Make sure we don't look at a |
9234 | stale cached response. */ | |
9235 | rs->cached_wait_status = 0; | |
9236 | ||
c906108c SS |
9237 | /* Copy the packet into buffer BUF2, encapsulating it |
9238 | and giving it a checksum. */ | |
9239 | ||
c906108c SS |
9240 | p = buf2; |
9241 | *p++ = '$'; | |
9242 | ||
9243 | for (i = 0; i < cnt; i++) | |
9244 | { | |
9245 | csum += buf[i]; | |
9246 | *p++ = buf[i]; | |
9247 | } | |
9248 | *p++ = '#'; | |
9249 | *p++ = tohex ((csum >> 4) & 0xf); | |
9250 | *p++ = tohex (csum & 0xf); | |
9251 | ||
9252 | /* Send it over and over until we get a positive ack. */ | |
9253 | ||
9254 | while (1) | |
9255 | { | |
9256 | int started_error_output = 0; | |
9257 | ||
9258 | if (remote_debug) | |
9259 | { | |
9260 | *p = '\0'; | |
b3ced9ba | 9261 | |
6f8976bf | 9262 | int len = (int) (p - buf2); |
6cc8564b LM |
9263 | int max_chars; |
9264 | ||
9265 | if (remote_packet_max_chars < 0) | |
9266 | max_chars = len; | |
9267 | else | |
9268 | max_chars = remote_packet_max_chars; | |
6f8976bf YQ |
9269 | |
9270 | std::string str | |
6cc8564b | 9271 | = escape_buffer (buf2, std::min (len, max_chars)); |
6f8976bf YQ |
9272 | |
9273 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
9274 | ||
6cc8564b | 9275 | if (len > max_chars) |
567a3e54 | 9276 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", |
6cc8564b | 9277 | len - max_chars); |
6f8976bf YQ |
9278 | |
9279 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 9280 | |
0f71a2f6 | 9281 | gdb_flush (gdb_stdlog); |
c906108c | 9282 | } |
c33e31fd | 9283 | remote_serial_write (buf2, p - buf2); |
c906108c | 9284 | |
a6f3e723 SL |
9285 | /* If this is a no acks version of the remote protocol, send the |
9286 | packet and move on. */ | |
9287 | if (rs->noack_mode) | |
9288 | break; | |
9289 | ||
74531fed PA |
9290 | /* Read until either a timeout occurs (-2) or '+' is read. |
9291 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9292 | while (1) |
9293 | { | |
9294 | ch = readchar (remote_timeout); | |
9295 | ||
c5aa993b | 9296 | if (remote_debug) |
c906108c SS |
9297 | { |
9298 | switch (ch) | |
9299 | { | |
9300 | case '+': | |
1216fa2c | 9301 | case '-': |
c906108c SS |
9302 | case SERIAL_TIMEOUT: |
9303 | case '$': | |
74531fed | 9304 | case '%': |
c906108c SS |
9305 | if (started_error_output) |
9306 | { | |
9307 | putchar_unfiltered ('\n'); | |
9308 | started_error_output = 0; | |
9309 | } | |
9310 | } | |
9311 | } | |
9312 | ||
9313 | switch (ch) | |
9314 | { | |
9315 | case '+': | |
9316 | if (remote_debug) | |
0f71a2f6 | 9317 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 9318 | return 1; |
1216fa2c AC |
9319 | case '-': |
9320 | if (remote_debug) | |
9321 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 9322 | /* FALLTHROUGH */ |
c906108c | 9323 | case SERIAL_TIMEOUT: |
c5aa993b | 9324 | tcount++; |
c906108c | 9325 | if (tcount > 3) |
b80406ac | 9326 | return 0; |
23860348 | 9327 | break; /* Retransmit buffer. */ |
c906108c SS |
9328 | case '$': |
9329 | { | |
40e3f985 | 9330 | if (remote_debug) |
2bc416ba | 9331 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 9332 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
9333 | /* It's probably an old response sent because an ACK |
9334 | was lost. Gobble up the packet and ack it so it | |
9335 | doesn't get retransmitted when we resend this | |
9336 | packet. */ | |
6d820c5c | 9337 | skip_frame (); |
c33e31fd | 9338 | remote_serial_write ("+", 1); |
23860348 | 9339 | continue; /* Now, go look for +. */ |
c906108c | 9340 | } |
74531fed PA |
9341 | |
9342 | case '%': | |
9343 | { | |
9344 | int val; | |
9345 | ||
9346 | /* If we got a notification, handle it, and go back to looking | |
9347 | for an ack. */ | |
9348 | /* We've found the start of a notification. Now | |
9349 | collect the data. */ | |
8d64371b | 9350 | val = read_frame (&rs->buf); |
74531fed PA |
9351 | if (val >= 0) |
9352 | { | |
9353 | if (remote_debug) | |
9354 | { | |
8d64371b | 9355 | std::string str = escape_buffer (rs->buf.data (), val); |
6e5abd65 | 9356 | |
6e5abd65 PA |
9357 | fprintf_unfiltered (gdb_stdlog, |
9358 | " Notification received: %s\n", | |
b3ced9ba | 9359 | str.c_str ()); |
74531fed | 9360 | } |
8d64371b | 9361 | handle_notification (rs->notif_state, rs->buf.data ()); |
74531fed PA |
9362 | /* We're in sync now, rewait for the ack. */ |
9363 | tcount = 0; | |
9364 | } | |
9365 | else | |
9366 | { | |
9367 | if (remote_debug) | |
9368 | { | |
9369 | if (!started_error_output) | |
9370 | { | |
9371 | started_error_output = 1; | |
9372 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
9373 | } | |
9374 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8d64371b | 9375 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf.data ()); |
74531fed PA |
9376 | } |
9377 | } | |
9378 | continue; | |
9379 | } | |
9380 | /* fall-through */ | |
c906108c SS |
9381 | default: |
9382 | if (remote_debug) | |
9383 | { | |
9384 | if (!started_error_output) | |
9385 | { | |
9386 | started_error_output = 1; | |
0f71a2f6 | 9387 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 9388 | } |
0f71a2f6 | 9389 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
9390 | } |
9391 | continue; | |
9392 | } | |
23860348 | 9393 | break; /* Here to retransmit. */ |
c906108c SS |
9394 | } |
9395 | ||
9396 | #if 0 | |
9397 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
9398 | able to get out next time we call QUIT, without anything as |
9399 | violent as interrupt_query. If we want to provide a way out of | |
9400 | here without getting to the next QUIT, it should be based on | |
9401 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9402 | if (quit_flag) |
9403 | { | |
9404 | quit_flag = 0; | |
9405 | interrupt_query (); | |
9406 | } | |
9407 | #endif | |
9408 | } | |
a5c0808e | 9409 | |
a6f3e723 | 9410 | return 0; |
c906108c SS |
9411 | } |
9412 | ||
6d820c5c DJ |
9413 | /* Come here after finding the start of a frame when we expected an |
9414 | ack. Do our best to discard the rest of this packet. */ | |
9415 | ||
6b8edb51 PA |
9416 | void |
9417 | remote_target::skip_frame () | |
6d820c5c DJ |
9418 | { |
9419 | int c; | |
9420 | ||
9421 | while (1) | |
9422 | { | |
9423 | c = readchar (remote_timeout); | |
9424 | switch (c) | |
9425 | { | |
9426 | case SERIAL_TIMEOUT: | |
9427 | /* Nothing we can do. */ | |
9428 | return; | |
9429 | case '#': | |
9430 | /* Discard the two bytes of checksum and stop. */ | |
9431 | c = readchar (remote_timeout); | |
9432 | if (c >= 0) | |
9433 | c = readchar (remote_timeout); | |
9434 | ||
9435 | return; | |
9436 | case '*': /* Run length encoding. */ | |
9437 | /* Discard the repeat count. */ | |
9438 | c = readchar (remote_timeout); | |
9439 | if (c < 0) | |
9440 | return; | |
9441 | break; | |
9442 | default: | |
9443 | /* A regular character. */ | |
9444 | break; | |
9445 | } | |
9446 | } | |
9447 | } | |
9448 | ||
c906108c | 9449 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9450 | into *BUF, verifying the checksum, length, and handling run-length |
9451 | compression. NUL terminate the buffer. If there is not enough room, | |
8d64371b | 9452 | expand *BUF. |
c906108c | 9453 | |
c2d11a7d JM |
9454 | Returns -1 on error, number of characters in buffer (ignoring the |
9455 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9456 | SERIAL status indications). */ |
c2d11a7d | 9457 | |
6b8edb51 | 9458 | long |
8d64371b | 9459 | remote_target::read_frame (gdb::char_vector *buf_p) |
c906108c SS |
9460 | { |
9461 | unsigned char csum; | |
c2d11a7d | 9462 | long bc; |
c906108c | 9463 | int c; |
8d64371b | 9464 | char *buf = buf_p->data (); |
a6f3e723 | 9465 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9466 | |
9467 | csum = 0; | |
c2d11a7d | 9468 | bc = 0; |
c906108c SS |
9469 | |
9470 | while (1) | |
9471 | { | |
9472 | c = readchar (remote_timeout); | |
c906108c SS |
9473 | switch (c) |
9474 | { | |
9475 | case SERIAL_TIMEOUT: | |
9476 | if (remote_debug) | |
0f71a2f6 | 9477 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 9478 | return -1; |
c906108c SS |
9479 | case '$': |
9480 | if (remote_debug) | |
0f71a2f6 JM |
9481 | fputs_filtered ("Saw new packet start in middle of old one\n", |
9482 | gdb_stdlog); | |
23860348 | 9483 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
9484 | case '#': |
9485 | { | |
9486 | unsigned char pktcsum; | |
e1b09194 AC |
9487 | int check_0 = 0; |
9488 | int check_1 = 0; | |
c906108c | 9489 | |
c2d11a7d | 9490 | buf[bc] = '\0'; |
c906108c | 9491 | |
e1b09194 AC |
9492 | check_0 = readchar (remote_timeout); |
9493 | if (check_0 >= 0) | |
9494 | check_1 = readchar (remote_timeout); | |
802188a7 | 9495 | |
e1b09194 AC |
9496 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9497 | { | |
9498 | if (remote_debug) | |
2bc416ba | 9499 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 9500 | gdb_stdlog); |
e1b09194 AC |
9501 | return -1; |
9502 | } | |
9503 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
9504 | { |
9505 | if (remote_debug) | |
2bc416ba | 9506 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 9507 | gdb_stdlog); |
40e3f985 FN |
9508 | return -1; |
9509 | } | |
c906108c | 9510 | |
a6f3e723 SL |
9511 | /* Don't recompute the checksum; with no ack packets we |
9512 | don't have any way to indicate a packet retransmission | |
9513 | is necessary. */ | |
9514 | if (rs->noack_mode) | |
9515 | return bc; | |
9516 | ||
e1b09194 | 9517 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9518 | if (csum == pktcsum) |
c2d11a7d | 9519 | return bc; |
c906108c | 9520 | |
c5aa993b | 9521 | if (remote_debug) |
c906108c | 9522 | { |
b3ced9ba | 9523 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 9524 | |
6e5abd65 | 9525 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
9526 | "Bad checksum, sentsum=0x%x, " |
9527 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 9528 | pktcsum, csum, str.c_str ()); |
c906108c | 9529 | } |
c2d11a7d | 9530 | /* Number of characters in buffer ignoring trailing |
23860348 | 9531 | NULL. */ |
c2d11a7d | 9532 | return -1; |
c906108c | 9533 | } |
23860348 | 9534 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
9535 | { |
9536 | int repeat; | |
c906108c | 9537 | |
a744cf53 | 9538 | csum += c; |
b4501125 AC |
9539 | c = readchar (remote_timeout); |
9540 | csum += c; | |
23860348 | 9541 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9542 | |
23860348 | 9543 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9544 | |
6d820c5c | 9545 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9546 | { |
8d64371b | 9547 | if (bc + repeat - 1 >= buf_p->size () - 1) |
6d820c5c DJ |
9548 | { |
9549 | /* Make some more room in the buffer. */ | |
8d64371b TT |
9550 | buf_p->resize (buf_p->size () + repeat); |
9551 | buf = buf_p->data (); | |
6d820c5c DJ |
9552 | } |
9553 | ||
c2d11a7d JM |
9554 | memset (&buf[bc], buf[bc - 1], repeat); |
9555 | bc += repeat; | |
c2c6d25f JM |
9556 | continue; |
9557 | } | |
9558 | ||
c2d11a7d | 9559 | buf[bc] = '\0'; |
6d820c5c | 9560 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9561 | return -1; |
c2c6d25f | 9562 | } |
c906108c | 9563 | default: |
8d64371b | 9564 | if (bc >= buf_p->size () - 1) |
c906108c | 9565 | { |
6d820c5c | 9566 | /* Make some more room in the buffer. */ |
8d64371b TT |
9567 | buf_p->resize (buf_p->size () * 2); |
9568 | buf = buf_p->data (); | |
c906108c SS |
9569 | } |
9570 | ||
6d820c5c DJ |
9571 | buf[bc++] = c; |
9572 | csum += c; | |
9573 | continue; | |
c906108c SS |
9574 | } |
9575 | } | |
9576 | } | |
9577 | ||
ed2b7c17 TT |
9578 | /* Set this to the maximum number of seconds to wait instead of waiting forever |
9579 | in target_wait(). If this timer times out, then it generates an error and | |
9580 | the command is aborted. This replaces most of the need for timeouts in the | |
9581 | GDB test suite, and makes it possible to distinguish between a hung target | |
9582 | and one with slow communications. */ | |
9583 | ||
9584 | static int watchdog = 0; | |
9585 | static void | |
9586 | show_watchdog (struct ui_file *file, int from_tty, | |
9587 | struct cmd_list_element *c, const char *value) | |
9588 | { | |
9589 | fprintf_filtered (file, _("Watchdog timer is %s.\n"), value); | |
9590 | } | |
9591 | ||
c906108c | 9592 | /* Read a packet from the remote machine, with error checking, and |
8d64371b TT |
9593 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9594 | FOREVER, wait forever rather than timing out; this is used (in | |
9595 | synchronous mode) to wait for a target that is is executing user | |
9596 | code to stop. */ | |
d9fcf2fb JM |
9597 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9598 | don't have to change all the calls to getpkt to deal with the | |
9599 | return value, because at the moment I don't know what the right | |
23860348 | 9600 | thing to do it for those. */ |
6b8edb51 | 9601 | |
c906108c | 9602 | void |
8d64371b | 9603 | remote_target::getpkt (gdb::char_vector *buf, int forever) |
d9fcf2fb | 9604 | { |
8d64371b | 9605 | getpkt_sane (buf, forever); |
d9fcf2fb JM |
9606 | } |
9607 | ||
9608 | ||
9609 | /* Read a packet from the remote machine, with error checking, and | |
8d64371b TT |
9610 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9611 | FOREVER, wait forever rather than timing out; this is used (in | |
9612 | synchronous mode) to wait for a target that is is executing user | |
9613 | code to stop. If FOREVER == 0, this function is allowed to time | |
9614 | out gracefully and return an indication of this to the caller. | |
9615 | Otherwise return the number of bytes read. If EXPECTING_NOTIF, | |
9616 | consider receiving a notification enough reason to return to the | |
9617 | caller. *IS_NOTIF is an output boolean that indicates whether *BUF | |
9618 | holds a notification or not (a regular packet). */ | |
74531fed | 9619 | |
6b8edb51 | 9620 | int |
8d64371b | 9621 | remote_target::getpkt_or_notif_sane_1 (gdb::char_vector *buf, |
6b8edb51 PA |
9622 | int forever, int expecting_notif, |
9623 | int *is_notif) | |
c906108c | 9624 | { |
2d717e4f | 9625 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9626 | int c; |
9627 | int tries; | |
9628 | int timeout; | |
df4b58fe | 9629 | int val = -1; |
c906108c | 9630 | |
2d717e4f DJ |
9631 | /* We're reading a new response. Make sure we don't look at a |
9632 | previously cached response. */ | |
9633 | rs->cached_wait_status = 0; | |
9634 | ||
8d64371b | 9635 | strcpy (buf->data (), "timeout"); |
c906108c SS |
9636 | |
9637 | if (forever) | |
74531fed PA |
9638 | timeout = watchdog > 0 ? watchdog : -1; |
9639 | else if (expecting_notif) | |
9640 | timeout = 0; /* There should already be a char in the buffer. If | |
9641 | not, bail out. */ | |
c906108c SS |
9642 | else |
9643 | timeout = remote_timeout; | |
9644 | ||
9645 | #define MAX_TRIES 3 | |
9646 | ||
74531fed PA |
9647 | /* Process any number of notifications, and then return when |
9648 | we get a packet. */ | |
9649 | for (;;) | |
c906108c | 9650 | { |
d9c43928 | 9651 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9652 | times. */ |
9653 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9654 | { |
74531fed PA |
9655 | /* This can loop forever if the remote side sends us |
9656 | characters continuously, but if it pauses, we'll get | |
9657 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9658 | we'll count that as a retry. | |
9659 | ||
9660 | Note that even when forever is set, we will only wait | |
9661 | forever prior to the start of a packet. After that, we | |
9662 | expect characters to arrive at a brisk pace. They should | |
9663 | show up within remote_timeout intervals. */ | |
9664 | do | |
9665 | c = readchar (timeout); | |
9666 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9667 | |
9668 | if (c == SERIAL_TIMEOUT) | |
9669 | { | |
74531fed PA |
9670 | if (expecting_notif) |
9671 | return -1; /* Don't complain, it's normal to not get | |
9672 | anything in this case. */ | |
9673 | ||
23860348 | 9674 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9675 | { |
5b6d1e4f | 9676 | remote_unpush_target (this); |
598d3636 JK |
9677 | throw_error (TARGET_CLOSE_ERROR, |
9678 | _("Watchdog timeout has expired. " | |
9679 | "Target detached.")); | |
c906108c | 9680 | } |
c906108c | 9681 | if (remote_debug) |
0f71a2f6 | 9682 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9683 | } |
74531fed PA |
9684 | else |
9685 | { | |
9686 | /* We've found the start of a packet or notification. | |
9687 | Now collect the data. */ | |
8d64371b | 9688 | val = read_frame (buf); |
74531fed PA |
9689 | if (val >= 0) |
9690 | break; | |
9691 | } | |
9692 | ||
c33e31fd | 9693 | remote_serial_write ("-", 1); |
c906108c | 9694 | } |
c906108c | 9695 | |
74531fed PA |
9696 | if (tries > MAX_TRIES) |
9697 | { | |
9698 | /* We have tried hard enough, and just can't receive the | |
9699 | packet/notification. Give up. */ | |
9700 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9701 | |
74531fed PA |
9702 | /* Skip the ack char if we're in no-ack mode. */ |
9703 | if (!rs->noack_mode) | |
c33e31fd | 9704 | remote_serial_write ("+", 1); |
74531fed PA |
9705 | return -1; |
9706 | } | |
c906108c | 9707 | |
74531fed PA |
9708 | /* If we got an ordinary packet, return that to our caller. */ |
9709 | if (c == '$') | |
c906108c SS |
9710 | { |
9711 | if (remote_debug) | |
43e526b9 | 9712 | { |
6cc8564b LM |
9713 | int max_chars; |
9714 | ||
9715 | if (remote_packet_max_chars < 0) | |
9716 | max_chars = val; | |
9717 | else | |
9718 | max_chars = remote_packet_max_chars; | |
9719 | ||
6f8976bf | 9720 | std::string str |
8d64371b | 9721 | = escape_buffer (buf->data (), |
6cc8564b | 9722 | std::min (val, max_chars)); |
6f8976bf YQ |
9723 | |
9724 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9725 | str.c_str ()); | |
9726 | ||
6cc8564b | 9727 | if (val > max_chars) |
567a3e54 | 9728 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", |
6cc8564b | 9729 | val - max_chars); |
6e5abd65 | 9730 | |
6f8976bf | 9731 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9732 | } |
a6f3e723 SL |
9733 | |
9734 | /* Skip the ack char if we're in no-ack mode. */ | |
9735 | if (!rs->noack_mode) | |
c33e31fd | 9736 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9737 | if (is_notif != NULL) |
9738 | *is_notif = 0; | |
0876f84a | 9739 | return val; |
c906108c SS |
9740 | } |
9741 | ||
74531fed PA |
9742 | /* If we got a notification, handle it, and go back to looking |
9743 | for a packet. */ | |
9744 | else | |
9745 | { | |
9746 | gdb_assert (c == '%'); | |
9747 | ||
9748 | if (remote_debug) | |
9749 | { | |
8d64371b | 9750 | std::string str = escape_buffer (buf->data (), val); |
6e5abd65 | 9751 | |
6e5abd65 PA |
9752 | fprintf_unfiltered (gdb_stdlog, |
9753 | " Notification received: %s\n", | |
b3ced9ba | 9754 | str.c_str ()); |
74531fed | 9755 | } |
fee9eda9 YQ |
9756 | if (is_notif != NULL) |
9757 | *is_notif = 1; | |
c906108c | 9758 | |
8d64371b | 9759 | handle_notification (rs->notif_state, buf->data ()); |
c906108c | 9760 | |
74531fed | 9761 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9762 | |
74531fed | 9763 | if (expecting_notif) |
fee9eda9 | 9764 | return val; |
74531fed PA |
9765 | } |
9766 | } | |
9767 | } | |
9768 | ||
6b8edb51 | 9769 | int |
8d64371b | 9770 | remote_target::getpkt_sane (gdb::char_vector *buf, int forever) |
74531fed | 9771 | { |
8d64371b | 9772 | return getpkt_or_notif_sane_1 (buf, forever, 0, NULL); |
74531fed PA |
9773 | } |
9774 | ||
6b8edb51 | 9775 | int |
8d64371b | 9776 | remote_target::getpkt_or_notif_sane (gdb::char_vector *buf, int forever, |
6b8edb51 | 9777 | int *is_notif) |
74531fed | 9778 | { |
8d64371b | 9779 | return getpkt_or_notif_sane_1 (buf, forever, 1, is_notif); |
c906108c | 9780 | } |
74531fed | 9781 | |
cbb8991c DB |
9782 | /* Kill any new fork children of process PID that haven't been |
9783 | processed by follow_fork. */ | |
9784 | ||
6b8edb51 PA |
9785 | void |
9786 | remote_target::kill_new_fork_children (int pid) | |
cbb8991c | 9787 | { |
6b8edb51 | 9788 | remote_state *rs = get_remote_state (); |
cbb8991c | 9789 | struct notif_client *notif = ¬if_client_stop; |
cbb8991c DB |
9790 | |
9791 | /* Kill the fork child threads of any threads in process PID | |
9792 | that are stopped at a fork event. */ | |
5b6d1e4f | 9793 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c DB |
9794 | { |
9795 | struct target_waitstatus *ws = &thread->pending_follow; | |
9796 | ||
9797 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9798 | { | |
953edf2b | 9799 | int child_pid = ws->value.related_pid.pid (); |
cbb8991c DB |
9800 | int res; |
9801 | ||
6b8edb51 | 9802 | res = remote_vkill (child_pid); |
cbb8991c DB |
9803 | if (res != 0) |
9804 | error (_("Can't kill fork child process %d"), child_pid); | |
9805 | } | |
9806 | } | |
9807 | ||
9808 | /* Check for any pending fork events (not reported or processed yet) | |
9809 | in process PID and kill those fork child threads as well. */ | |
9810 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
9811 | for (auto &event : rs->stop_reply_queue) |
9812 | if (is_pending_fork_parent (&event->ws, pid, event->ptid)) | |
9813 | { | |
9814 | int child_pid = event->ws.value.related_pid.pid (); | |
9815 | int res; | |
9816 | ||
9817 | res = remote_vkill (child_pid); | |
9818 | if (res != 0) | |
9819 | error (_("Can't kill fork child process %d"), child_pid); | |
9820 | } | |
cbb8991c DB |
9821 | } |
9822 | ||
c906108c | 9823 | \f |
8020350c DB |
9824 | /* Target hook to kill the current inferior. */ |
9825 | ||
f6ac5f3d PA |
9826 | void |
9827 | remote_target::kill () | |
43ff13b4 | 9828 | { |
8020350c | 9829 | int res = -1; |
e99b03dc | 9830 | int pid = inferior_ptid.pid (); |
8020350c | 9831 | struct remote_state *rs = get_remote_state (); |
0fdf84ca | 9832 | |
8020350c | 9833 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9834 | { |
8020350c DB |
9835 | /* If we're stopped while forking and we haven't followed yet, |
9836 | kill the child task. We need to do this before killing the | |
9837 | parent task because if this is a vfork then the parent will | |
9838 | be sleeping. */ | |
6b8edb51 | 9839 | kill_new_fork_children (pid); |
8020350c | 9840 | |
6b8edb51 | 9841 | res = remote_vkill (pid); |
8020350c | 9842 | if (res == 0) |
0fdf84ca | 9843 | { |
bc1e6c81 | 9844 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9845 | return; |
9846 | } | |
8020350c | 9847 | } |
0fdf84ca | 9848 | |
8020350c DB |
9849 | /* If we are in 'target remote' mode and we are killing the only |
9850 | inferior, then we will tell gdbserver to exit and unpush the | |
9851 | target. */ | |
9852 | if (res == -1 && !remote_multi_process_p (rs) | |
5b6d1e4f | 9853 | && number_of_live_inferiors (this) == 1) |
8020350c DB |
9854 | { |
9855 | remote_kill_k (); | |
9856 | ||
9857 | /* We've killed the remote end, we get to mourn it. If we are | |
9858 | not in extended mode, mourning the inferior also unpushes | |
9859 | remote_ops from the target stack, which closes the remote | |
9860 | connection. */ | |
bc1e6c81 | 9861 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9862 | |
9863 | return; | |
0fdf84ca | 9864 | } |
43ff13b4 | 9865 | |
8020350c | 9866 | error (_("Can't kill process")); |
43ff13b4 JM |
9867 | } |
9868 | ||
8020350c DB |
9869 | /* Send a kill request to the target using the 'vKill' packet. */ |
9870 | ||
6b8edb51 PA |
9871 | int |
9872 | remote_target::remote_vkill (int pid) | |
82f73884 | 9873 | { |
4082afcc | 9874 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9875 | return -1; |
9876 | ||
6b8edb51 PA |
9877 | remote_state *rs = get_remote_state (); |
9878 | ||
82f73884 | 9879 | /* Tell the remote target to detach. */ |
8d64371b | 9880 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vKill;%x", pid); |
82f73884 | 9881 | putpkt (rs->buf); |
8d64371b | 9882 | getpkt (&rs->buf, 0); |
82f73884 | 9883 | |
4082afcc PA |
9884 | switch (packet_ok (rs->buf, |
9885 | &remote_protocol_packets[PACKET_vKill])) | |
9886 | { | |
9887 | case PACKET_OK: | |
9888 | return 0; | |
9889 | case PACKET_ERROR: | |
9890 | return 1; | |
9891 | case PACKET_UNKNOWN: | |
9892 | return -1; | |
9893 | default: | |
9894 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9895 | } | |
82f73884 PA |
9896 | } |
9897 | ||
8020350c DB |
9898 | /* Send a kill request to the target using the 'k' packet. */ |
9899 | ||
6b8edb51 PA |
9900 | void |
9901 | remote_target::remote_kill_k () | |
82f73884 | 9902 | { |
8020350c DB |
9903 | /* Catch errors so the user can quit from gdb even when we |
9904 | aren't on speaking terms with the remote system. */ | |
a70b8144 | 9905 | try |
82f73884 | 9906 | { |
82f73884 | 9907 | putpkt ("k"); |
82f73884 | 9908 | } |
230d2906 | 9909 | catch (const gdb_exception_error &ex) |
8020350c DB |
9910 | { |
9911 | if (ex.error == TARGET_CLOSE_ERROR) | |
9912 | { | |
9913 | /* If we got an (EOF) error that caused the target | |
9914 | to go away, then we're done, that's what we wanted. | |
9915 | "k" is susceptible to cause a premature EOF, given | |
9916 | that the remote server isn't actually required to | |
9917 | reply to "k", and it can happen that it doesn't | |
9918 | even get to reply ACK to the "k". */ | |
9919 | return; | |
9920 | } | |
82f73884 | 9921 | |
8020350c DB |
9922 | /* Otherwise, something went wrong. We didn't actually kill |
9923 | the target. Just propagate the exception, and let the | |
9924 | user or higher layers decide what to do. */ | |
eedc3f4f | 9925 | throw; |
8020350c | 9926 | } |
82f73884 PA |
9927 | } |
9928 | ||
f6ac5f3d PA |
9929 | void |
9930 | remote_target::mourn_inferior () | |
c906108c | 9931 | { |
8020350c | 9932 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9933 | |
9607784a PA |
9934 | /* We're no longer interested in notification events of an inferior |
9935 | that exited or was killed/detached. */ | |
9936 | discard_pending_stop_replies (current_inferior ()); | |
9937 | ||
8020350c | 9938 | /* In 'target remote' mode with one inferior, we close the connection. */ |
5b6d1e4f | 9939 | if (!rs->extended && number_of_live_inferiors (this) <= 1) |
8020350c | 9940 | { |
5b6d1e4f | 9941 | remote_unpush_target (this); |
8020350c DB |
9942 | return; |
9943 | } | |
c906108c | 9944 | |
e24a49d8 PA |
9945 | /* In case we got here due to an error, but we're going to stay |
9946 | connected. */ | |
9947 | rs->waiting_for_stop_reply = 0; | |
9948 | ||
dc1981d7 PA |
9949 | /* If the current general thread belonged to the process we just |
9950 | detached from or has exited, the remote side current general | |
9951 | thread becomes undefined. Considering a case like this: | |
9952 | ||
9953 | - We just got here due to a detach. | |
9954 | - The process that we're detaching from happens to immediately | |
9955 | report a global breakpoint being hit in non-stop mode, in the | |
9956 | same thread we had selected before. | |
9957 | - GDB attaches to this process again. | |
9958 | - This event happens to be the next event we handle. | |
9959 | ||
9960 | GDB would consider that the current general thread didn't need to | |
9961 | be set on the stub side (with Hg), since for all it knew, | |
9962 | GENERAL_THREAD hadn't changed. | |
9963 | ||
9964 | Notice that although in all-stop mode, the remote server always | |
9965 | sets the current thread to the thread reporting the stop event, | |
9966 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9967 | not* change the current thread when reporting a breakpoint hit, | |
9968 | due to the decoupling of event reporting and event handling. | |
9969 | ||
9970 | To keep things simple, we always invalidate our notion of the | |
9971 | current thread. */ | |
47f8a51d | 9972 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9973 | |
8020350c | 9974 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 | 9975 | generic_mourn_inferior (); |
2d717e4f | 9976 | } |
c906108c | 9977 | |
57810aa7 | 9978 | bool |
f6ac5f3d | 9979 | extended_remote_target::supports_disable_randomization () |
03583c20 | 9980 | { |
4082afcc | 9981 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9982 | } |
9983 | ||
6b8edb51 PA |
9984 | void |
9985 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
9986 | { |
9987 | struct remote_state *rs = get_remote_state (); | |
9988 | char *reply; | |
9989 | ||
8d64371b TT |
9990 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
9991 | "QDisableRandomization:%x", val); | |
03583c20 | 9992 | putpkt (rs->buf); |
b6bb3468 | 9993 | reply = remote_get_noisy_reply (); |
03583c20 UW |
9994 | if (*reply == '\0') |
9995 | error (_("Target does not support QDisableRandomization.")); | |
9996 | if (strcmp (reply, "OK") != 0) | |
9997 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9998 | } | |
9999 | ||
6b8edb51 PA |
10000 | int |
10001 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
10002 | { |
10003 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 10004 | int len; |
94585166 | 10005 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 10006 | |
2d717e4f DJ |
10007 | /* If the user has disabled vRun support, or we have detected that |
10008 | support is not available, do not try it. */ | |
4082afcc | 10009 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 10010 | return -1; |
424163ea | 10011 | |
8d64371b TT |
10012 | strcpy (rs->buf.data (), "vRun;"); |
10013 | len = strlen (rs->buf.data ()); | |
c906108c | 10014 | |
2d717e4f DJ |
10015 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
10016 | error (_("Remote file name too long for run packet")); | |
8d64371b | 10017 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf.data () + len, |
9f1b45b0 | 10018 | strlen (remote_exec_file)); |
2d717e4f | 10019 | |
7c5ded6a | 10020 | if (!args.empty ()) |
2d717e4f | 10021 | { |
2d717e4f | 10022 | int i; |
2d717e4f | 10023 | |
773a1edc | 10024 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
10025 | for (i = 0; argv[i] != NULL; i++) |
10026 | { | |
10027 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
10028 | error (_("Argument list too long for run packet")); | |
10029 | rs->buf[len++] = ';'; | |
8d64371b | 10030 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf.data () + len, |
9f1b45b0 | 10031 | strlen (argv[i])); |
2d717e4f | 10032 | } |
2d717e4f DJ |
10033 | } |
10034 | ||
10035 | rs->buf[len++] = '\0'; | |
10036 | ||
10037 | putpkt (rs->buf); | |
8d64371b | 10038 | getpkt (&rs->buf, 0); |
2d717e4f | 10039 | |
4082afcc | 10040 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 10041 | { |
4082afcc | 10042 | case PACKET_OK: |
3405876a | 10043 | /* We have a wait response. All is well. */ |
2d717e4f | 10044 | return 0; |
4082afcc PA |
10045 | case PACKET_UNKNOWN: |
10046 | return -1; | |
10047 | case PACKET_ERROR: | |
2d717e4f DJ |
10048 | if (remote_exec_file[0] == '\0') |
10049 | error (_("Running the default executable on the remote target failed; " | |
10050 | "try \"set remote exec-file\"?")); | |
10051 | else | |
10052 | error (_("Running \"%s\" on the remote target failed"), | |
10053 | remote_exec_file); | |
4082afcc PA |
10054 | default: |
10055 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 10056 | } |
c906108c SS |
10057 | } |
10058 | ||
0a2dde4a SDJ |
10059 | /* Helper function to send set/unset environment packets. ACTION is |
10060 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
10061 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
10062 | sent. */ | |
10063 | ||
6b8edb51 PA |
10064 | void |
10065 | remote_target::send_environment_packet (const char *action, | |
10066 | const char *packet, | |
10067 | const char *value) | |
0a2dde4a | 10068 | { |
6b8edb51 PA |
10069 | remote_state *rs = get_remote_state (); |
10070 | ||
0a2dde4a SDJ |
10071 | /* Convert the environment variable to an hex string, which |
10072 | is the best format to be transmitted over the wire. */ | |
10073 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
10074 | strlen (value)); | |
10075 | ||
8d64371b | 10076 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
0a2dde4a SDJ |
10077 | "%s:%s", packet, encoded_value.c_str ()); |
10078 | ||
10079 | putpkt (rs->buf); | |
8d64371b TT |
10080 | getpkt (&rs->buf, 0); |
10081 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10082 | warning (_("Unable to %s environment variable '%s' on remote."), |
10083 | action, value); | |
10084 | } | |
10085 | ||
10086 | /* Helper function to handle the QEnvironment* packets. */ | |
10087 | ||
6b8edb51 PA |
10088 | void |
10089 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 10090 | { |
6b8edb51 PA |
10091 | remote_state *rs = get_remote_state (); |
10092 | ||
0a2dde4a SDJ |
10093 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
10094 | { | |
10095 | putpkt ("QEnvironmentReset"); | |
8d64371b TT |
10096 | getpkt (&rs->buf, 0); |
10097 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10098 | warning (_("Unable to reset environment on remote.")); |
10099 | } | |
10100 | ||
10101 | gdb_environ *e = ¤t_inferior ()->environment; | |
10102 | ||
10103 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
10104 | for (const std::string &el : e->user_set_env ()) | |
6b8edb51 | 10105 | send_environment_packet ("set", "QEnvironmentHexEncoded", |
0a2dde4a SDJ |
10106 | el.c_str ()); |
10107 | ||
10108 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
10109 | for (const std::string &el : e->user_unset_env ()) | |
6b8edb51 | 10110 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
10111 | } |
10112 | ||
bc3b087d SDJ |
10113 | /* Helper function to set the current working directory for the |
10114 | inferior in the remote target. */ | |
10115 | ||
6b8edb51 PA |
10116 | void |
10117 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d SDJ |
10118 | { |
10119 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
10120 | { | |
10121 | const char *inferior_cwd = get_inferior_cwd (); | |
6b8edb51 | 10122 | remote_state *rs = get_remote_state (); |
bc3b087d SDJ |
10123 | |
10124 | if (inferior_cwd != NULL) | |
10125 | { | |
10126 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
10127 | strlen (inferior_cwd)); | |
10128 | ||
8d64371b | 10129 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10130 | "QSetWorkingDir:%s", hexpath.c_str ()); |
10131 | } | |
10132 | else | |
10133 | { | |
10134 | /* An empty inferior_cwd means that the user wants us to | |
10135 | reset the remote server's inferior's cwd. */ | |
8d64371b | 10136 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10137 | "QSetWorkingDir:"); |
10138 | } | |
10139 | ||
10140 | putpkt (rs->buf); | |
8d64371b | 10141 | getpkt (&rs->buf, 0); |
bc3b087d SDJ |
10142 | if (packet_ok (rs->buf, |
10143 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
10144 | != PACKET_OK) | |
10145 | error (_("\ | |
10146 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10147 | directory: %s"), | |
8d64371b | 10148 | rs->buf.data ()); |
bc3b087d SDJ |
10149 | |
10150 | } | |
10151 | } | |
10152 | ||
2d717e4f DJ |
10153 | /* In the extended protocol we want to be able to do things like |
10154 | "run" and have them basically work as expected. So we need | |
10155 | a special create_inferior function. We support changing the | |
10156 | executable file and the command line arguments, but not the | |
10157 | environment. */ | |
10158 | ||
f6ac5f3d PA |
10159 | void |
10160 | extended_remote_target::create_inferior (const char *exec_file, | |
10161 | const std::string &args, | |
10162 | char **env, int from_tty) | |
43ff13b4 | 10163 | { |
3405876a PA |
10164 | int run_worked; |
10165 | char *stop_reply; | |
10166 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10167 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10168 | |
43ff13b4 | 10169 | /* If running asynchronously, register the target file descriptor |
23860348 | 10170 | with the event loop. */ |
75c99385 | 10171 | if (target_can_async_p ()) |
6a3753b3 | 10172 | target_async (1); |
43ff13b4 | 10173 | |
03583c20 | 10174 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10175 | if (supports_disable_randomization ()) |
03583c20 UW |
10176 | extended_remote_disable_randomization (disable_randomization); |
10177 | ||
aefd8b33 SDJ |
10178 | /* If startup-with-shell is on, we inform gdbserver to start the |
10179 | remote inferior using a shell. */ | |
10180 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
10181 | { | |
8d64371b | 10182 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
aefd8b33 SDJ |
10183 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); |
10184 | putpkt (rs->buf); | |
8d64371b TT |
10185 | getpkt (&rs->buf, 0); |
10186 | if (strcmp (rs->buf.data (), "OK") != 0) | |
aefd8b33 SDJ |
10187 | error (_("\ |
10188 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
8d64371b | 10189 | rs->buf.data ()); |
aefd8b33 SDJ |
10190 | } |
10191 | ||
6b8edb51 | 10192 | extended_remote_environment_support (); |
0a2dde4a | 10193 | |
6b8edb51 | 10194 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10195 | |
43ff13b4 | 10196 | /* Now restart the remote server. */ |
3405876a PA |
10197 | run_worked = extended_remote_run (args) != -1; |
10198 | if (!run_worked) | |
2d717e4f DJ |
10199 | { |
10200 | /* vRun was not supported. Fail if we need it to do what the | |
10201 | user requested. */ | |
10202 | if (remote_exec_file[0]) | |
10203 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10204 | if (!args.empty ()) |
65e65158 | 10205 | error (_("Remote target does not support \"set args\" or run ARGS")); |
43ff13b4 | 10206 | |
2d717e4f DJ |
10207 | /* Fall back to "R". */ |
10208 | extended_remote_restart (); | |
10209 | } | |
424163ea | 10210 | |
3405876a | 10211 | /* vRun's success return is a stop reply. */ |
8d64371b | 10212 | stop_reply = run_worked ? rs->buf.data () : NULL; |
3405876a | 10213 | add_current_inferior_and_thread (stop_reply); |
c0a2216e | 10214 | |
2d717e4f DJ |
10215 | /* Get updated offsets, if the stub uses qOffsets. */ |
10216 | get_offsets (); | |
2d717e4f | 10217 | } |
c906108c | 10218 | \f |
c5aa993b | 10219 | |
b775012e LM |
10220 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10221 | the list of conditions (in agent expression bytecode format), if any, the | |
10222 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10223 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10224 | |
10225 | static int | |
10226 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10227 | struct bp_target_info *bp_tgt, char *buf, |
10228 | char *buf_end) | |
b775012e | 10229 | { |
3cde5c42 | 10230 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10231 | return 0; |
10232 | ||
10233 | buf += strlen (buf); | |
bba74b36 | 10234 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10235 | buf++; |
10236 | ||
83621223 | 10237 | /* Send conditions to the target. */ |
d538e36d | 10238 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10239 | { |
bba74b36 | 10240 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10241 | buf += strlen (buf); |
3cde5c42 | 10242 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10243 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10244 | *buf = '\0'; | |
10245 | } | |
b775012e LM |
10246 | return 0; |
10247 | } | |
10248 | ||
d3ce09f5 SS |
10249 | static void |
10250 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10251 | struct bp_target_info *bp_tgt, char *buf) | |
10252 | { | |
3cde5c42 | 10253 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10254 | return; |
10255 | ||
10256 | buf += strlen (buf); | |
10257 | ||
10258 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10259 | buf += strlen (buf); | |
10260 | ||
10261 | /* Concatenate all the agent expressions that are commands into the | |
10262 | cmds parameter. */ | |
df97be55 | 10263 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10264 | { |
10265 | sprintf (buf, "X%x,", aexpr->len); | |
10266 | buf += strlen (buf); | |
3cde5c42 | 10267 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10268 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10269 | *buf = '\0'; | |
10270 | } | |
d3ce09f5 SS |
10271 | } |
10272 | ||
8181d85f DJ |
10273 | /* Insert a breakpoint. On targets that have software breakpoint |
10274 | support, we ask the remote target to do the work; on targets | |
10275 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10276 | |
f6ac5f3d PA |
10277 | int |
10278 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10279 | struct bp_target_info *bp_tgt) | |
c906108c | 10280 | { |
d471ea57 AC |
10281 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10282 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10283 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10284 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10285 | |
4082afcc | 10286 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10287 | { |
0d5ed153 | 10288 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10289 | struct remote_state *rs; |
bba74b36 | 10290 | char *p, *endbuf; |
4fff2411 | 10291 | |
28439a30 PA |
10292 | /* Make sure the remote is pointing at the right process, if |
10293 | necessary. */ | |
10294 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10295 | set_general_process (); | |
10296 | ||
4fff2411 | 10297 | rs = get_remote_state (); |
8d64371b TT |
10298 | p = rs->buf.data (); |
10299 | endbuf = p + get_remote_packet_size (); | |
802188a7 | 10300 | |
96baa820 JM |
10301 | *(p++) = 'Z'; |
10302 | *(p++) = '0'; | |
10303 | *(p++) = ','; | |
7c0f6dcc | 10304 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10305 | p += hexnumstr (p, addr); |
579c6ad9 | 10306 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10307 | |
f6ac5f3d | 10308 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10309 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10310 | |
f6ac5f3d | 10311 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10312 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10313 | ||
6d820c5c | 10314 | putpkt (rs->buf); |
8d64371b | 10315 | getpkt (&rs->buf, 0); |
96baa820 | 10316 | |
6d820c5c | 10317 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10318 | { |
d471ea57 AC |
10319 | case PACKET_ERROR: |
10320 | return -1; | |
10321 | case PACKET_OK: | |
10322 | return 0; | |
10323 | case PACKET_UNKNOWN: | |
10324 | break; | |
96baa820 JM |
10325 | } |
10326 | } | |
c906108c | 10327 | |
0000e5cc PA |
10328 | /* If this breakpoint has target-side commands but this stub doesn't |
10329 | support Z0 packets, throw error. */ | |
3cde5c42 | 10330 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10331 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10332 | Target doesn't support breakpoints that have target side commands.")); | |
10333 | ||
f6ac5f3d | 10334 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10335 | } |
10336 | ||
f6ac5f3d PA |
10337 | int |
10338 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10339 | struct bp_target_info *bp_tgt, | |
10340 | enum remove_bp_reason reason) | |
c906108c | 10341 | { |
8181d85f | 10342 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10343 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10344 | |
4082afcc | 10345 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10346 | { |
8d64371b TT |
10347 | char *p = rs->buf.data (); |
10348 | char *endbuf = p + get_remote_packet_size (); | |
802188a7 | 10349 | |
28439a30 PA |
10350 | /* Make sure the remote is pointing at the right process, if |
10351 | necessary. */ | |
10352 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10353 | set_general_process (); | |
10354 | ||
96baa820 JM |
10355 | *(p++) = 'z'; |
10356 | *(p++) = '0'; | |
10357 | *(p++) = ','; | |
10358 | ||
8181d85f DJ |
10359 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10360 | p += hexnumstr (p, addr); | |
579c6ad9 | 10361 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10362 | |
6d820c5c | 10363 | putpkt (rs->buf); |
8d64371b | 10364 | getpkt (&rs->buf, 0); |
96baa820 | 10365 | |
6d820c5c | 10366 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10367 | } |
10368 | ||
f6ac5f3d | 10369 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10370 | } |
10371 | ||
f486487f | 10372 | static enum Z_packet_type |
d471ea57 AC |
10373 | watchpoint_to_Z_packet (int type) |
10374 | { | |
10375 | switch (type) | |
10376 | { | |
10377 | case hw_write: | |
bb858e6a | 10378 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10379 | break; |
10380 | case hw_read: | |
bb858e6a | 10381 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10382 | break; |
10383 | case hw_access: | |
bb858e6a | 10384 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10385 | break; |
10386 | default: | |
8e65ff28 | 10387 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10388 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10389 | } |
10390 | } | |
10391 | ||
f6ac5f3d PA |
10392 | int |
10393 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10394 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10395 | { |
d01949b6 | 10396 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10397 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10398 | char *p; |
d471ea57 | 10399 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10400 | |
4082afcc | 10401 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10402 | return 1; |
802188a7 | 10403 | |
28439a30 PA |
10404 | /* Make sure the remote is pointing at the right process, if |
10405 | necessary. */ | |
10406 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10407 | set_general_process (); | |
10408 | ||
8d64371b TT |
10409 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "Z%x,", packet); |
10410 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10411 | addr = remote_address_masked (addr); |
10412 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10413 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10414 | |
6d820c5c | 10415 | putpkt (rs->buf); |
8d64371b | 10416 | getpkt (&rs->buf, 0); |
96baa820 | 10417 | |
6d820c5c | 10418 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10419 | { |
10420 | case PACKET_ERROR: | |
d471ea57 | 10421 | return -1; |
85d721b8 PA |
10422 | case PACKET_UNKNOWN: |
10423 | return 1; | |
d471ea57 AC |
10424 | case PACKET_OK: |
10425 | return 0; | |
10426 | } | |
8e65ff28 | 10427 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10428 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10429 | } |
10430 | ||
57810aa7 | 10431 | bool |
f6ac5f3d PA |
10432 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10433 | CORE_ADDR start, int length) | |
283002cf MR |
10434 | { |
10435 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10436 | ||
10437 | return diff < length; | |
10438 | } | |
10439 | ||
d471ea57 | 10440 | |
f6ac5f3d PA |
10441 | int |
10442 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10443 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10444 | { |
d01949b6 | 10445 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10446 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10447 | char *p; |
d471ea57 AC |
10448 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10449 | ||
4082afcc | 10450 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10451 | return -1; |
802188a7 | 10452 | |
28439a30 PA |
10453 | /* Make sure the remote is pointing at the right process, if |
10454 | necessary. */ | |
10455 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10456 | set_general_process (); | |
10457 | ||
8d64371b TT |
10458 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "z%x,", packet); |
10459 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10460 | addr = remote_address_masked (addr); |
10461 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10462 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c | 10463 | putpkt (rs->buf); |
8d64371b | 10464 | getpkt (&rs->buf, 0); |
96baa820 | 10465 | |
6d820c5c | 10466 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10467 | { |
10468 | case PACKET_ERROR: | |
10469 | case PACKET_UNKNOWN: | |
10470 | return -1; | |
10471 | case PACKET_OK: | |
10472 | return 0; | |
10473 | } | |
8e65ff28 | 10474 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10475 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10476 | } |
10477 | ||
3c3bea1c | 10478 | |
60fcc1c3 TT |
10479 | static int remote_hw_watchpoint_limit = -1; |
10480 | static int remote_hw_watchpoint_length_limit = -1; | |
10481 | static int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 10482 | |
f6ac5f3d PA |
10483 | int |
10484 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10485 | { |
10486 | if (remote_hw_watchpoint_length_limit == 0) | |
10487 | return 0; | |
10488 | else if (remote_hw_watchpoint_length_limit < 0) | |
10489 | return 1; | |
10490 | else if (len <= remote_hw_watchpoint_length_limit) | |
10491 | return 1; | |
10492 | else | |
10493 | return 0; | |
10494 | } | |
10495 | ||
f6ac5f3d PA |
10496 | int |
10497 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10498 | { |
3c3bea1c GS |
10499 | if (type == bp_hardware_breakpoint) |
10500 | { | |
10501 | if (remote_hw_breakpoint_limit == 0) | |
10502 | return 0; | |
501eef12 AC |
10503 | else if (remote_hw_breakpoint_limit < 0) |
10504 | return 1; | |
3c3bea1c GS |
10505 | else if (cnt <= remote_hw_breakpoint_limit) |
10506 | return 1; | |
10507 | } | |
10508 | else | |
10509 | { | |
10510 | if (remote_hw_watchpoint_limit == 0) | |
10511 | return 0; | |
501eef12 AC |
10512 | else if (remote_hw_watchpoint_limit < 0) |
10513 | return 1; | |
3c3bea1c GS |
10514 | else if (ot) |
10515 | return -1; | |
10516 | else if (cnt <= remote_hw_watchpoint_limit) | |
10517 | return 1; | |
10518 | } | |
10519 | return -1; | |
10520 | } | |
10521 | ||
f7e6eed5 PA |
10522 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10523 | ||
57810aa7 | 10524 | bool |
f6ac5f3d | 10525 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10526 | { |
799a2abe | 10527 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10528 | |
799a2abe | 10529 | return (thread->priv != NULL |
7aabaf9d SM |
10530 | && (get_remote_thread_info (thread)->stop_reason |
10531 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10532 | } |
10533 | ||
10534 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10535 | remote. */ | |
10536 | ||
57810aa7 | 10537 | bool |
f6ac5f3d | 10538 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10539 | { |
f7e6eed5 PA |
10540 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10541 | } | |
10542 | ||
10543 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10544 | ||
57810aa7 | 10545 | bool |
f6ac5f3d | 10546 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10547 | { |
799a2abe | 10548 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10549 | |
799a2abe | 10550 | return (thread->priv != NULL |
7aabaf9d SM |
10551 | && (get_remote_thread_info (thread)->stop_reason |
10552 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10553 | } |
10554 | ||
10555 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10556 | remote. */ | |
10557 | ||
57810aa7 | 10558 | bool |
f6ac5f3d | 10559 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10560 | { |
f7e6eed5 PA |
10561 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10562 | } | |
10563 | ||
57810aa7 | 10564 | bool |
f6ac5f3d | 10565 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10566 | { |
799a2abe | 10567 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10568 | |
799a2abe | 10569 | return (thread->priv != NULL |
7aabaf9d SM |
10570 | && (get_remote_thread_info (thread)->stop_reason |
10571 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10572 | } |
10573 | ||
57810aa7 | 10574 | bool |
f6ac5f3d | 10575 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10576 | { |
799a2abe | 10577 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10578 | |
799a2abe | 10579 | if (thread->priv != NULL |
7aabaf9d SM |
10580 | && (get_remote_thread_info (thread)->stop_reason |
10581 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10582 | { |
7aabaf9d | 10583 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10584 | return true; |
4aa7a7f5 JJ |
10585 | } |
10586 | ||
57810aa7 | 10587 | return false; |
3c3bea1c GS |
10588 | } |
10589 | ||
10590 | ||
f6ac5f3d PA |
10591 | int |
10592 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10593 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10594 | { |
0d5ed153 | 10595 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10596 | struct remote_state *rs; |
bba74b36 | 10597 | char *p, *endbuf; |
dd61ec5c | 10598 | char *message; |
3c3bea1c | 10599 | |
4082afcc | 10600 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10601 | return -1; |
2bc416ba | 10602 | |
28439a30 PA |
10603 | /* Make sure the remote is pointing at the right process, if |
10604 | necessary. */ | |
10605 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10606 | set_general_process (); | |
10607 | ||
4fff2411 | 10608 | rs = get_remote_state (); |
8d64371b TT |
10609 | p = rs->buf.data (); |
10610 | endbuf = p + get_remote_packet_size (); | |
4fff2411 | 10611 | |
96baa820 JM |
10612 | *(p++) = 'Z'; |
10613 | *(p++) = '1'; | |
10614 | *(p++) = ','; | |
802188a7 | 10615 | |
0d5ed153 | 10616 | addr = remote_address_masked (addr); |
96baa820 | 10617 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10618 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10619 | |
f6ac5f3d | 10620 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10621 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10622 | |
f6ac5f3d | 10623 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10624 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10625 | ||
6d820c5c | 10626 | putpkt (rs->buf); |
8d64371b | 10627 | getpkt (&rs->buf, 0); |
96baa820 | 10628 | |
6d820c5c | 10629 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10630 | { |
10631 | case PACKET_ERROR: | |
dd61ec5c MW |
10632 | if (rs->buf[1] == '.') |
10633 | { | |
8d64371b | 10634 | message = strchr (&rs->buf[2], '.'); |
dd61ec5c | 10635 | if (message) |
0316657e | 10636 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
10637 | } |
10638 | return -1; | |
d471ea57 AC |
10639 | case PACKET_UNKNOWN: |
10640 | return -1; | |
10641 | case PACKET_OK: | |
10642 | return 0; | |
10643 | } | |
8e65ff28 | 10644 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10645 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10646 | } |
10647 | ||
d471ea57 | 10648 | |
f6ac5f3d PA |
10649 | int |
10650 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10651 | struct bp_target_info *bp_tgt) | |
96baa820 | 10652 | { |
8181d85f | 10653 | CORE_ADDR addr; |
d01949b6 | 10654 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
10655 | char *p = rs->buf.data (); |
10656 | char *endbuf = p + get_remote_packet_size (); | |
c8189ed1 | 10657 | |
4082afcc | 10658 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10659 | return -1; |
802188a7 | 10660 | |
28439a30 PA |
10661 | /* Make sure the remote is pointing at the right process, if |
10662 | necessary. */ | |
10663 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10664 | set_general_process (); | |
10665 | ||
96baa820 JM |
10666 | *(p++) = 'z'; |
10667 | *(p++) = '1'; | |
10668 | *(p++) = ','; | |
802188a7 | 10669 | |
8181d85f | 10670 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10671 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10672 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10673 | |
6d820c5c | 10674 | putpkt (rs->buf); |
8d64371b | 10675 | getpkt (&rs->buf, 0); |
802188a7 | 10676 | |
6d820c5c | 10677 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10678 | { |
10679 | case PACKET_ERROR: | |
10680 | case PACKET_UNKNOWN: | |
10681 | return -1; | |
10682 | case PACKET_OK: | |
10683 | return 0; | |
10684 | } | |
8e65ff28 | 10685 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10686 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10687 | } |
96baa820 | 10688 | |
4a5e7a5b PA |
10689 | /* Verify memory using the "qCRC:" request. */ |
10690 | ||
f6ac5f3d PA |
10691 | int |
10692 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
10693 | { |
10694 | struct remote_state *rs = get_remote_state (); | |
10695 | unsigned long host_crc, target_crc; | |
10696 | char *tmp; | |
10697 | ||
936d2992 PA |
10698 | /* It doesn't make sense to use qCRC if the remote target is |
10699 | connected but not running. */ | |
10700 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
10701 | { | |
10702 | enum packet_result result; | |
28439a30 | 10703 | |
936d2992 PA |
10704 | /* Make sure the remote is pointing at the right process. */ |
10705 | set_general_process (); | |
4a5e7a5b | 10706 | |
936d2992 | 10707 | /* FIXME: assumes lma can fit into long. */ |
8d64371b | 10708 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qCRC:%lx,%lx", |
936d2992 PA |
10709 | (long) lma, (long) size); |
10710 | putpkt (rs->buf); | |
4a5e7a5b | 10711 | |
936d2992 PA |
10712 | /* Be clever; compute the host_crc before waiting for target |
10713 | reply. */ | |
10714 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10715 | ||
8d64371b | 10716 | getpkt (&rs->buf, 0); |
4a5e7a5b | 10717 | |
936d2992 PA |
10718 | result = packet_ok (rs->buf, |
10719 | &remote_protocol_packets[PACKET_qCRC]); | |
10720 | if (result == PACKET_ERROR) | |
10721 | return -1; | |
10722 | else if (result == PACKET_OK) | |
10723 | { | |
10724 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10725 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10726 | |
936d2992 PA |
10727 | return (host_crc == target_crc); |
10728 | } | |
10729 | } | |
4a5e7a5b | 10730 | |
f6ac5f3d | 10731 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
10732 | } |
10733 | ||
c906108c SS |
10734 | /* compare-sections command |
10735 | ||
10736 | With no arguments, compares each loadable section in the exec bfd | |
10737 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10738 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10739 | |
c906108c | 10740 | static void |
ac88e2de | 10741 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
10742 | { |
10743 | asection *s; | |
ce359b09 | 10744 | const char *sectname; |
c906108c SS |
10745 | bfd_size_type size; |
10746 | bfd_vma lma; | |
10747 | int matched = 0; | |
10748 | int mismatched = 0; | |
4a5e7a5b | 10749 | int res; |
95cf3b38 | 10750 | int read_only = 0; |
c906108c SS |
10751 | |
10752 | if (!exec_bfd) | |
8a3fe4f8 | 10753 | error (_("command cannot be used without an exec file")); |
c906108c | 10754 | |
95cf3b38 DT |
10755 | if (args != NULL && strcmp (args, "-r") == 0) |
10756 | { | |
10757 | read_only = 1; | |
10758 | args = NULL; | |
10759 | } | |
10760 | ||
c5aa993b | 10761 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
10762 | { |
10763 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10764 | continue; /* Skip non-loadable section. */ |
c906108c | 10765 | |
95cf3b38 DT |
10766 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10767 | continue; /* Skip writeable sections */ | |
10768 | ||
fd361982 | 10769 | size = bfd_section_size (s); |
c906108c | 10770 | if (size == 0) |
0df8b418 | 10771 | continue; /* Skip zero-length section. */ |
c906108c | 10772 | |
fd361982 | 10773 | sectname = bfd_section_name (s); |
c906108c | 10774 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10775 | continue; /* Not the section selected by user. */ |
c906108c | 10776 | |
0df8b418 | 10777 | matched = 1; /* Do this section. */ |
c906108c | 10778 | lma = s->lma; |
c906108c | 10779 | |
b80406ac TT |
10780 | gdb::byte_vector sectdata (size); |
10781 | bfd_get_section_contents (exec_bfd, s, sectdata.data (), 0, size); | |
c906108c | 10782 | |
b80406ac | 10783 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
10784 | |
10785 | if (res == -1) | |
5af949e3 | 10786 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10787 | paddress (target_gdbarch (), lma), |
10788 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10789 | |
5af949e3 | 10790 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10791 | paddress (target_gdbarch (), lma), |
10792 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10793 | if (res) |
c906108c SS |
10794 | printf_filtered ("matched.\n"); |
10795 | else | |
c5aa993b JM |
10796 | { |
10797 | printf_filtered ("MIS-MATCHED!\n"); | |
10798 | mismatched++; | |
10799 | } | |
c906108c SS |
10800 | } |
10801 | if (mismatched > 0) | |
936d2992 | 10802 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10803 | the loaded file\n")); |
c906108c | 10804 | if (args && !matched) |
a3f17187 | 10805 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10806 | } |
10807 | ||
0e7f50da UW |
10808 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10809 | into remote target. The number of bytes written to the remote | |
10810 | target is returned, or -1 for error. */ | |
10811 | ||
6b8edb51 PA |
10812 | target_xfer_status |
10813 | remote_target::remote_write_qxfer (const char *object_name, | |
10814 | const char *annex, const gdb_byte *writebuf, | |
10815 | ULONGEST offset, LONGEST len, | |
10816 | ULONGEST *xfered_len, | |
10817 | struct packet_config *packet) | |
0e7f50da UW |
10818 | { |
10819 | int i, buf_len; | |
10820 | ULONGEST n; | |
0e7f50da UW |
10821 | struct remote_state *rs = get_remote_state (); |
10822 | int max_size = get_memory_write_packet_size (); | |
10823 | ||
7cc244de | 10824 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10825 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10826 | |
10827 | /* Insert header. */ | |
8d64371b | 10828 | i = snprintf (rs->buf.data (), max_size, |
0e7f50da UW |
10829 | "qXfer:%s:write:%s:%s:", |
10830 | object_name, annex ? annex : "", | |
10831 | phex_nz (offset, sizeof offset)); | |
10832 | max_size -= (i + 1); | |
10833 | ||
10834 | /* Escape as much data as fits into rs->buf. */ | |
10835 | buf_len = remote_escape_output | |
8d64371b | 10836 | (writebuf, len, 1, (gdb_byte *) rs->buf.data () + i, &max_size, max_size); |
0e7f50da | 10837 | |
8d64371b TT |
10838 | if (putpkt_binary (rs->buf.data (), i + buf_len) < 0 |
10839 | || getpkt_sane (&rs->buf, 0) < 0 | |
0e7f50da | 10840 | || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 10841 | return TARGET_XFER_E_IO; |
0e7f50da | 10842 | |
8d64371b | 10843 | unpack_varlen_hex (rs->buf.data (), &n); |
9b409511 YQ |
10844 | |
10845 | *xfered_len = n; | |
92ffd475 | 10846 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
10847 | } |
10848 | ||
0876f84a DJ |
10849 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10850 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10851 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10852 | The number of bytes read may be less than LEN without indicating an | |
10853 | EOF. PACKET is checked and updated to indicate whether the remote | |
10854 | target supports this object. */ | |
10855 | ||
6b8edb51 PA |
10856 | target_xfer_status |
10857 | remote_target::remote_read_qxfer (const char *object_name, | |
10858 | const char *annex, | |
10859 | gdb_byte *readbuf, ULONGEST offset, | |
10860 | LONGEST len, | |
10861 | ULONGEST *xfered_len, | |
10862 | struct packet_config *packet) | |
0876f84a | 10863 | { |
0876f84a | 10864 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10865 | LONGEST i, n, packet_len; |
10866 | ||
7cc244de | 10867 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10868 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10869 | |
10870 | /* Check whether we've cached an end-of-object packet that matches | |
10871 | this request. */ | |
8e88304f | 10872 | if (rs->finished_object) |
0876f84a | 10873 | { |
8e88304f TT |
10874 | if (strcmp (object_name, rs->finished_object) == 0 |
10875 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10876 | && offset == rs->finished_offset) | |
9b409511 YQ |
10877 | return TARGET_XFER_EOF; |
10878 | ||
0876f84a DJ |
10879 | |
10880 | /* Otherwise, we're now reading something different. Discard | |
10881 | the cache. */ | |
8e88304f TT |
10882 | xfree (rs->finished_object); |
10883 | xfree (rs->finished_annex); | |
10884 | rs->finished_object = NULL; | |
10885 | rs->finished_annex = NULL; | |
0876f84a DJ |
10886 | } |
10887 | ||
10888 | /* Request only enough to fit in a single packet. The actual data | |
10889 | may not, since we don't know how much of it will need to be escaped; | |
10890 | the target is free to respond with slightly less data. We subtract | |
10891 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10892 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
8d64371b TT |
10893 | snprintf (rs->buf.data (), get_remote_packet_size () - 4, |
10894 | "qXfer:%s:read:%s:%s,%s", | |
0876f84a DJ |
10895 | object_name, annex ? annex : "", |
10896 | phex_nz (offset, sizeof offset), | |
10897 | phex_nz (n, sizeof n)); | |
10898 | i = putpkt (rs->buf); | |
10899 | if (i < 0) | |
2ed4b548 | 10900 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10901 | |
10902 | rs->buf[0] = '\0'; | |
8d64371b | 10903 | packet_len = getpkt_sane (&rs->buf, 0); |
0876f84a | 10904 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 10905 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10906 | |
10907 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8d64371b | 10908 | error (_("Unknown remote qXfer reply: %s"), rs->buf.data ()); |
0876f84a DJ |
10909 | |
10910 | /* 'm' means there is (or at least might be) more data after this | |
10911 | batch. That does not make sense unless there's at least one byte | |
10912 | of data in this reply. */ | |
10913 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10914 | error (_("Remote qXfer reply contained no data.")); | |
10915 | ||
10916 | /* Got some data. */ | |
8d64371b | 10917 | i = remote_unescape_input ((gdb_byte *) rs->buf.data () + 1, |
bc20a4af | 10918 | packet_len - 1, readbuf, n); |
0876f84a DJ |
10919 | |
10920 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10921 | or possibly empty. If we have the final block of a non-empty |
10922 | object, record this fact to bypass a subsequent partial read. */ | |
10923 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10924 | { |
8e88304f TT |
10925 | rs->finished_object = xstrdup (object_name); |
10926 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10927 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10928 | } |
10929 | ||
9b409511 YQ |
10930 | if (i == 0) |
10931 | return TARGET_XFER_EOF; | |
10932 | else | |
10933 | { | |
10934 | *xfered_len = i; | |
10935 | return TARGET_XFER_OK; | |
10936 | } | |
0876f84a DJ |
10937 | } |
10938 | ||
f6ac5f3d PA |
10939 | enum target_xfer_status |
10940 | remote_target::xfer_partial (enum target_object object, | |
10941 | const char *annex, gdb_byte *readbuf, | |
10942 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
10943 | ULONGEST *xfered_len) | |
c906108c | 10944 | { |
82f73884 | 10945 | struct remote_state *rs; |
c906108c | 10946 | int i; |
6d820c5c | 10947 | char *p2; |
1e3ff5ad | 10948 | char query_type; |
124e13d9 | 10949 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10950 | |
e6e4e701 | 10951 | set_remote_traceframe (); |
82f73884 PA |
10952 | set_general_thread (inferior_ptid); |
10953 | ||
10954 | rs = get_remote_state (); | |
10955 | ||
b2182ed2 | 10956 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10957 | if (object == TARGET_OBJECT_MEMORY) |
10958 | { | |
2d717e4f DJ |
10959 | /* If the remote target is connected but not running, we should |
10960 | pass this request down to a lower stratum (e.g. the executable | |
10961 | file). */ | |
10962 | if (!target_has_execution) | |
9b409511 | 10963 | return TARGET_XFER_EOF; |
2d717e4f | 10964 | |
21e3b9b9 | 10965 | if (writebuf != NULL) |
124e13d9 SM |
10966 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10967 | xfered_len); | |
21e3b9b9 | 10968 | else |
6b8edb51 | 10969 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 10970 | xfered_len); |
21e3b9b9 DJ |
10971 | } |
10972 | ||
4aa995e1 PA |
10973 | /* Handle extra signal info using qxfer packets. */ |
10974 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10975 | { | |
10976 | if (readbuf) | |
f6ac5f3d | 10977 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 10978 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10979 | [PACKET_qXfer_siginfo_read]); |
10980 | else | |
f6ac5f3d | 10981 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 10982 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10983 | &remote_protocol_packets |
10984 | [PACKET_qXfer_siginfo_write]); | |
10985 | } | |
10986 | ||
0fb4aa4b PA |
10987 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10988 | { | |
10989 | if (readbuf) | |
f6ac5f3d | 10990 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 10991 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10992 | &remote_protocol_packets |
10993 | [PACKET_qXfer_statictrace_read]); | |
10994 | else | |
2ed4b548 | 10995 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10996 | } |
10997 | ||
a76d924d DJ |
10998 | /* Only handle flash writes. */ |
10999 | if (writebuf != NULL) | |
11000 | { | |
a76d924d DJ |
11001 | switch (object) |
11002 | { | |
11003 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 11004 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 11005 | writebuf); |
a76d924d DJ |
11006 | |
11007 | default: | |
2ed4b548 | 11008 | return TARGET_XFER_E_IO; |
a76d924d DJ |
11009 | } |
11010 | } | |
4b8a223f | 11011 | |
1e3ff5ad AC |
11012 | /* Map pre-existing objects onto letters. DO NOT do this for new |
11013 | objects!!! Instead specify new query packets. */ | |
11014 | switch (object) | |
c906108c | 11015 | { |
1e3ff5ad AC |
11016 | case TARGET_OBJECT_AVR: |
11017 | query_type = 'R'; | |
11018 | break; | |
802188a7 RM |
11019 | |
11020 | case TARGET_OBJECT_AUXV: | |
0876f84a | 11021 | gdb_assert (annex == NULL); |
f6ac5f3d | 11022 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 11023 | xfered_len, |
0876f84a | 11024 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 11025 | |
23181151 DJ |
11026 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
11027 | return remote_read_qxfer | |
f6ac5f3d | 11028 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
11029 | &remote_protocol_packets[PACKET_qXfer_features]); |
11030 | ||
cfa9d6d9 DJ |
11031 | case TARGET_OBJECT_LIBRARIES: |
11032 | return remote_read_qxfer | |
f6ac5f3d | 11033 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
11034 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
11035 | ||
2268b414 JK |
11036 | case TARGET_OBJECT_LIBRARIES_SVR4: |
11037 | return remote_read_qxfer | |
f6ac5f3d | 11038 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
11039 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
11040 | ||
fd79ecee DJ |
11041 | case TARGET_OBJECT_MEMORY_MAP: |
11042 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11043 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 11044 | xfered_len, |
fd79ecee DJ |
11045 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
11046 | ||
07e059b5 VP |
11047 | case TARGET_OBJECT_OSDATA: |
11048 | /* Should only get here if we're connected. */ | |
5d93a237 | 11049 | gdb_assert (rs->remote_desc); |
07e059b5 | 11050 | return remote_read_qxfer |
f6ac5f3d | 11051 | ("osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
11052 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
11053 | ||
dc146f7c VP |
11054 | case TARGET_OBJECT_THREADS: |
11055 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11056 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 11057 | xfered_len, |
dc146f7c VP |
11058 | &remote_protocol_packets[PACKET_qXfer_threads]); |
11059 | ||
b3b9301e PA |
11060 | case TARGET_OBJECT_TRACEFRAME_INFO: |
11061 | gdb_assert (annex == NULL); | |
11062 | return remote_read_qxfer | |
f6ac5f3d | 11063 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 11064 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
11065 | |
11066 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 11067 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 11068 | xfered_len, |
78d85199 | 11069 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
11070 | |
11071 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 11072 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 11073 | xfered_len, |
169081d0 TG |
11074 | &remote_protocol_packets[PACKET_qXfer_uib]); |
11075 | ||
9accd112 | 11076 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 11077 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 11078 | xfered_len, |
9accd112 MM |
11079 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
11080 | ||
f4abbc16 | 11081 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 11082 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
11083 | len, xfered_len, |
11084 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
11085 | ||
c78fa86a | 11086 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 11087 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
11088 | len, xfered_len, |
11089 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
11090 | ||
1e3ff5ad | 11091 | default: |
2ed4b548 | 11092 | return TARGET_XFER_E_IO; |
c906108c SS |
11093 | } |
11094 | ||
0df8b418 | 11095 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 11096 | large enough let the caller deal with it. */ |
ea9c271d | 11097 | if (len < get_remote_packet_size ()) |
2ed4b548 | 11098 | return TARGET_XFER_E_IO; |
ea9c271d | 11099 | len = get_remote_packet_size (); |
1e3ff5ad | 11100 | |
23860348 | 11101 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 11102 | if (!rs->remote_desc) |
8a3fe4f8 | 11103 | error (_("remote query is only available after target open")); |
c906108c | 11104 | |
1e3ff5ad | 11105 | gdb_assert (annex != NULL); |
4b8a223f | 11106 | gdb_assert (readbuf != NULL); |
c906108c | 11107 | |
8d64371b | 11108 | p2 = rs->buf.data (); |
c906108c SS |
11109 | *p2++ = 'q'; |
11110 | *p2++ = query_type; | |
11111 | ||
23860348 MS |
11112 | /* We used one buffer char for the remote protocol q command and |
11113 | another for the query type. As the remote protocol encapsulation | |
11114 | uses 4 chars plus one extra in case we are debugging | |
11115 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
11116 | string. */ | |
c906108c | 11117 | i = 0; |
ea9c271d | 11118 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11119 | { |
1e3ff5ad AC |
11120 | /* Bad caller may have sent forbidden characters. */ |
11121 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11122 | *p2++ = annex[i]; | |
c906108c SS |
11123 | i++; |
11124 | } | |
1e3ff5ad AC |
11125 | *p2 = '\0'; |
11126 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11127 | |
6d820c5c | 11128 | i = putpkt (rs->buf); |
c5aa993b | 11129 | if (i < 0) |
2ed4b548 | 11130 | return TARGET_XFER_E_IO; |
c906108c | 11131 | |
8d64371b TT |
11132 | getpkt (&rs->buf, 0); |
11133 | strcpy ((char *) readbuf, rs->buf.data ()); | |
c906108c | 11134 | |
9b409511 | 11135 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11136 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11137 | } |
11138 | ||
09c98b44 DB |
11139 | /* Implementation of to_get_memory_xfer_limit. */ |
11140 | ||
f6ac5f3d PA |
11141 | ULONGEST |
11142 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11143 | { |
11144 | return get_memory_write_packet_size (); | |
11145 | } | |
11146 | ||
f6ac5f3d PA |
11147 | int |
11148 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11149 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11150 | CORE_ADDR *found_addrp) | |
08388c79 | 11151 | { |
f5656ead | 11152 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
11153 | struct remote_state *rs = get_remote_state (); |
11154 | int max_size = get_memory_write_packet_size (); | |
11155 | struct packet_config *packet = | |
11156 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
11157 | /* Number of packet bytes used to encode the pattern; |
11158 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11159 | int escaped_pattern_len; |
0df8b418 | 11160 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11161 | int used_pattern_len; |
11162 | int i; | |
11163 | int found; | |
11164 | ULONGEST found_addr; | |
11165 | ||
7cc244de PA |
11166 | /* Don't go to the target if we don't have to. This is done before |
11167 | checking packet_config_support to avoid the possibility that a | |
11168 | success for this edge case means the facility works in | |
11169 | general. */ | |
08388c79 DE |
11170 | if (pattern_len > search_space_len) |
11171 | return 0; | |
11172 | if (pattern_len == 0) | |
11173 | { | |
11174 | *found_addrp = start_addr; | |
11175 | return 1; | |
11176 | } | |
11177 | ||
11178 | /* If we already know the packet isn't supported, fall back to the simple | |
11179 | way of searching memory. */ | |
11180 | ||
4082afcc | 11181 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
11182 | { |
11183 | /* Target doesn't provided special support, fall back and use the | |
11184 | standard support (copy memory and do the search here). */ | |
f6ac5f3d | 11185 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
11186 | pattern, pattern_len, found_addrp); |
11187 | } | |
11188 | ||
28439a30 PA |
11189 | /* Make sure the remote is pointing at the right process. */ |
11190 | set_general_process (); | |
11191 | ||
08388c79 | 11192 | /* Insert header. */ |
8d64371b | 11193 | i = snprintf (rs->buf.data (), max_size, |
08388c79 | 11194 | "qSearch:memory:%s;%s;", |
5af949e3 | 11195 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11196 | phex_nz (search_space_len, sizeof (search_space_len))); |
11197 | max_size -= (i + 1); | |
11198 | ||
11199 | /* Escape as much data as fits into rs->buf. */ | |
11200 | escaped_pattern_len = | |
8d64371b TT |
11201 | remote_escape_output (pattern, pattern_len, 1, |
11202 | (gdb_byte *) rs->buf.data () + i, | |
08388c79 DE |
11203 | &used_pattern_len, max_size); |
11204 | ||
11205 | /* Bail if the pattern is too large. */ | |
11206 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11207 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 | 11208 | |
8d64371b TT |
11209 | if (putpkt_binary (rs->buf.data (), i + escaped_pattern_len) < 0 |
11210 | || getpkt_sane (&rs->buf, 0) < 0 | |
08388c79 DE |
11211 | || packet_ok (rs->buf, packet) != PACKET_OK) |
11212 | { | |
11213 | /* The request may not have worked because the command is not | |
11214 | supported. If so, fall back to the simple way. */ | |
7cc244de | 11215 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 11216 | { |
f6ac5f3d | 11217 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
11218 | pattern, pattern_len, found_addrp); |
11219 | } | |
11220 | return -1; | |
11221 | } | |
11222 | ||
11223 | if (rs->buf[0] == '0') | |
11224 | found = 0; | |
11225 | else if (rs->buf[0] == '1') | |
11226 | { | |
11227 | found = 1; | |
11228 | if (rs->buf[1] != ',') | |
8d64371b TT |
11229 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
11230 | unpack_varlen_hex (&rs->buf[2], &found_addr); | |
08388c79 DE |
11231 | *found_addrp = found_addr; |
11232 | } | |
11233 | else | |
8d64371b | 11234 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
08388c79 DE |
11235 | |
11236 | return found; | |
11237 | } | |
11238 | ||
f6ac5f3d PA |
11239 | void |
11240 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11241 | { |
d01949b6 | 11242 | struct remote_state *rs = get_remote_state (); |
8d64371b | 11243 | char *p = rs->buf.data (); |
96baa820 | 11244 | |
5d93a237 | 11245 | if (!rs->remote_desc) |
8a3fe4f8 | 11246 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11247 | |
23860348 | 11248 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11249 | if (command == NULL) |
11250 | command = ""; | |
11251 | ||
23860348 | 11252 | /* The query prefix. */ |
8d64371b TT |
11253 | strcpy (rs->buf.data (), "qRcmd,"); |
11254 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 | 11255 | |
8d64371b | 11256 | if ((strlen (rs->buf.data ()) + strlen (command) * 2 + 8/*misc*/) |
3e43a32a | 11257 | > get_remote_packet_size ()) |
8a3fe4f8 | 11258 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11259 | |
23860348 | 11260 | /* Encode the actual command. */ |
a30bf1f1 | 11261 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11262 | |
6d820c5c | 11263 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11264 | error (_("Communication problem with target.")); |
96baa820 JM |
11265 | |
11266 | /* get/display the response */ | |
11267 | while (1) | |
11268 | { | |
2e9f7625 DJ |
11269 | char *buf; |
11270 | ||
00bf0b85 | 11271 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11272 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11273 | rs->buf[0] = '\0'; |
8d64371b | 11274 | if (getpkt_sane (&rs->buf, 0) == -1) |
5b37825d PW |
11275 | { |
11276 | /* Timeout. Continue to (try to) read responses. | |
11277 | This is better than stopping with an error, assuming the stub | |
11278 | is still executing the (long) monitor command. | |
11279 | If needed, the user can interrupt gdb using C-c, obtaining | |
11280 | an effect similar to stop on timeout. */ | |
11281 | continue; | |
11282 | } | |
8d64371b | 11283 | buf = rs->buf.data (); |
96baa820 | 11284 | if (buf[0] == '\0') |
8a3fe4f8 | 11285 | error (_("Target does not support this command.")); |
96baa820 JM |
11286 | if (buf[0] == 'O' && buf[1] != 'K') |
11287 | { | |
23860348 | 11288 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11289 | continue; |
11290 | } | |
11291 | if (strcmp (buf, "OK") == 0) | |
11292 | break; | |
7be570e7 JM |
11293 | if (strlen (buf) == 3 && buf[0] == 'E' |
11294 | && isdigit (buf[1]) && isdigit (buf[2])) | |
11295 | { | |
8a3fe4f8 | 11296 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11297 | } |
96baa820 JM |
11298 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11299 | { | |
11300 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11301 | |
96baa820 JM |
11302 | fputc_unfiltered (c, outbuf); |
11303 | } | |
11304 | break; | |
11305 | } | |
11306 | } | |
11307 | ||
f6ac5f3d PA |
11308 | std::vector<mem_region> |
11309 | remote_target::memory_map () | |
fd79ecee | 11310 | { |
a664f67e | 11311 | std::vector<mem_region> result; |
9018be22 | 11312 | gdb::optional<gdb::char_vector> text |
8b88a78e | 11313 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_MEMORY_MAP, NULL); |
fd79ecee DJ |
11314 | |
11315 | if (text) | |
9018be22 | 11316 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11317 | |
11318 | return result; | |
11319 | } | |
11320 | ||
c906108c | 11321 | static void |
ac88e2de | 11322 | packet_command (const char *args, int from_tty) |
c906108c | 11323 | { |
6b8edb51 | 11324 | remote_target *remote = get_current_remote_target (); |
c906108c | 11325 | |
6b8edb51 | 11326 | if (remote == nullptr) |
8a3fe4f8 | 11327 | error (_("command can only be used with remote target")); |
c906108c | 11328 | |
6b8edb51 PA |
11329 | remote->packet_command (args, from_tty); |
11330 | } | |
11331 | ||
11332 | void | |
11333 | remote_target::packet_command (const char *args, int from_tty) | |
11334 | { | |
c5aa993b | 11335 | if (!args) |
8a3fe4f8 | 11336 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
11337 | |
11338 | puts_filtered ("sending: "); | |
11339 | print_packet (args); | |
11340 | puts_filtered ("\n"); | |
11341 | putpkt (args); | |
11342 | ||
6b8edb51 PA |
11343 | remote_state *rs = get_remote_state (); |
11344 | ||
8d64371b | 11345 | getpkt (&rs->buf, 0); |
c906108c | 11346 | puts_filtered ("received: "); |
8d64371b | 11347 | print_packet (rs->buf.data ()); |
c906108c SS |
11348 | puts_filtered ("\n"); |
11349 | } | |
11350 | ||
11351 | #if 0 | |
23860348 | 11352 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11353 | |
a14ed312 | 11354 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11355 | |
a14ed312 | 11356 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11357 | |
a14ed312 | 11358 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11359 | |
a14ed312 | 11360 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11361 | |
23860348 | 11362 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11363 | |
a14ed312 | 11364 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11365 | |
23860348 | 11366 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11367 | |
a14ed312 | 11368 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11369 | |
a14ed312 | 11370 | static void init_remote_threadtests (void); |
c906108c | 11371 | |
23860348 | 11372 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11373 | |
11374 | static void | |
0b39b52e | 11375 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11376 | { |
11377 | int sample_thread = SAMPLE_THREAD; | |
11378 | ||
a3f17187 | 11379 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 11380 | set_general_thread (sample_thread); |
c906108c SS |
11381 | } |
11382 | ||
11383 | ||
11384 | static void | |
0b39b52e | 11385 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11386 | { |
11387 | int sample_thread = SAMPLE_THREAD; | |
e99b03dc | 11388 | int pid = inferior_ptid.pid (); |
fd79271b | 11389 | ptid_t ptid = ptid_t (pid, sample_thread, 0); |
c906108c | 11390 | |
79d7f229 | 11391 | if (remote_thread_alive (ptid)) |
c906108c SS |
11392 | printf_filtered ("PASS: Thread alive test\n"); |
11393 | else | |
11394 | printf_filtered ("FAIL: Thread alive test\n"); | |
11395 | } | |
11396 | ||
23860348 | 11397 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11398 | |
11399 | void | |
fba45db2 | 11400 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11401 | { |
11402 | char hexid[20]; | |
11403 | ||
405feb71 | 11404 | pack_threadid (&hexid[0], ref); /* Convert thread id into hex. */ |
c906108c SS |
11405 | hexid[16] = 0; |
11406 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
11407 | } | |
11408 | ||
11409 | static void | |
0b39b52e | 11410 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11411 | { |
11412 | int startflag = 1; | |
11413 | threadref nextthread; | |
11414 | int done, result_count; | |
11415 | threadref threadlist[3]; | |
11416 | ||
11417 | printf_filtered ("Remote Threadlist test\n"); | |
11418 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
11419 | &result_count, &threadlist[0])) | |
11420 | printf_filtered ("FAIL: threadlist test\n"); | |
11421 | else | |
11422 | { | |
11423 | threadref *scan = threadlist; | |
11424 | threadref *limit = scan + result_count; | |
11425 | ||
11426 | while (scan < limit) | |
11427 | output_threadid (" thread ", scan++); | |
11428 | } | |
11429 | } | |
11430 | ||
11431 | void | |
fba45db2 | 11432 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11433 | { |
11434 | output_threadid ("Threadid: ", &info->threadid); | |
11435 | printf_filtered ("Name: %s\n ", info->shortname); | |
11436 | printf_filtered ("State: %s\n", info->display); | |
11437 | printf_filtered ("other: %s\n\n", info->more_display); | |
11438 | } | |
11439 | ||
11440 | int | |
fba45db2 | 11441 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11442 | { |
11443 | int result; | |
11444 | int set; | |
11445 | struct gdb_ext_thread_info threadinfo; | |
11446 | ||
11447 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11448 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11449 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11450 | display_thread_info (&threadinfo); | |
11451 | return result; | |
11452 | } | |
11453 | ||
11454 | static void | |
0b39b52e | 11455 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11456 | { |
11457 | int athread = SAMPLE_THREAD; | |
11458 | threadref thread; | |
11459 | int set; | |
11460 | ||
11461 | int_to_threadref (&thread, athread); | |
11462 | printf_filtered ("Remote Threadinfo test\n"); | |
11463 | if (!get_and_display_threadinfo (&thread)) | |
11464 | printf_filtered ("FAIL cannot get thread info\n"); | |
11465 | } | |
11466 | ||
11467 | static int | |
fba45db2 | 11468 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11469 | { |
11470 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11471 | return get_and_display_threadinfo (ref); | |
11472 | } | |
11473 | ||
11474 | static void | |
0b39b52e | 11475 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
11476 | { |
11477 | printf_filtered ("Remote Threadlist update test\n"); | |
11478 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11479 | } | |
11480 | ||
11481 | static void | |
11482 | init_remote_threadtests (void) | |
11483 | { | |
3e43a32a MS |
11484 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11485 | _("Fetch and print the remote list of " | |
590042fc | 11486 | "thread identifiers, one pkt only.")); |
c906108c | 11487 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
590042fc | 11488 | _("Fetch and display info about one thread.")); |
c906108c | 11489 | add_com ("tset", class_obscure, threadset_test_cmd, |
590042fc | 11490 | _("Test setting to a different thread.")); |
c906108c | 11491 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
590042fc | 11492 | _("Iterate through updating all remote thread info.")); |
c906108c | 11493 | add_com ("talive", class_obscure, threadalive_test, |
590042fc | 11494 | _("Remote thread alive test.")); |
c906108c SS |
11495 | } |
11496 | ||
11497 | #endif /* 0 */ | |
11498 | ||
a068643d | 11499 | /* Convert a thread ID to a string. */ |
f3fb8c85 | 11500 | |
a068643d | 11501 | std::string |
f6ac5f3d | 11502 | remote_target::pid_to_str (ptid_t ptid) |
f3fb8c85 | 11503 | { |
82f73884 | 11504 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11505 | |
d7e15655 | 11506 | if (ptid == null_ptid) |
7cee1e54 | 11507 | return normal_pid_to_str (ptid); |
0e998d96 | 11508 | else if (ptid.is_pid ()) |
ecd0ada5 PA |
11509 | { |
11510 | /* Printing an inferior target id. */ | |
11511 | ||
11512 | /* When multi-process extensions are off, there's no way in the | |
11513 | remote protocol to know the remote process id, if there's any | |
11514 | at all. There's one exception --- when we're connected with | |
11515 | target extended-remote, and we manually attached to a process | |
11516 | with "attach PID". We don't record anywhere a flag that | |
11517 | allows us to distinguish that case from the case of | |
11518 | connecting with extended-remote and the stub already being | |
11519 | attached to a process, and reporting yes to qAttached, hence | |
11520 | no smart special casing here. */ | |
11521 | if (!remote_multi_process_p (rs)) | |
a068643d | 11522 | return "Remote target"; |
ecd0ada5 PA |
11523 | |
11524 | return normal_pid_to_str (ptid); | |
82f73884 | 11525 | } |
ecd0ada5 | 11526 | else |
79d7f229 | 11527 | { |
d7e15655 | 11528 | if (magic_null_ptid == ptid) |
a068643d | 11529 | return "Thread <main>"; |
8020350c | 11530 | else if (remote_multi_process_p (rs)) |
e38504b3 | 11531 | if (ptid.lwp () == 0) |
de0d863e DB |
11532 | return normal_pid_to_str (ptid); |
11533 | else | |
a068643d TT |
11534 | return string_printf ("Thread %d.%ld", |
11535 | ptid.pid (), ptid.lwp ()); | |
ecd0ada5 | 11536 | else |
a068643d | 11537 | return string_printf ("Thread %ld", ptid.lwp ()); |
79d7f229 | 11538 | } |
f3fb8c85 MS |
11539 | } |
11540 | ||
38691318 KB |
11541 | /* Get the address of the thread local variable in OBJFILE which is |
11542 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11543 | ||
f6ac5f3d PA |
11544 | CORE_ADDR |
11545 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11546 | CORE_ADDR offset) | |
38691318 | 11547 | { |
4082afcc | 11548 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11549 | { |
11550 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11551 | char *p = rs->buf.data (); |
11552 | char *endp = p + get_remote_packet_size (); | |
571dd617 | 11553 | enum packet_result result; |
38691318 KB |
11554 | |
11555 | strcpy (p, "qGetTLSAddr:"); | |
11556 | p += strlen (p); | |
82f73884 | 11557 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11558 | *p++ = ','; |
11559 | p += hexnumstr (p, offset); | |
11560 | *p++ = ','; | |
11561 | p += hexnumstr (p, lm); | |
11562 | *p++ = '\0'; | |
11563 | ||
6d820c5c | 11564 | putpkt (rs->buf); |
8d64371b | 11565 | getpkt (&rs->buf, 0); |
3e43a32a MS |
11566 | result = packet_ok (rs->buf, |
11567 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11568 | if (result == PACKET_OK) |
38691318 | 11569 | { |
b926417a | 11570 | ULONGEST addr; |
38691318 | 11571 | |
8d64371b | 11572 | unpack_varlen_hex (rs->buf.data (), &addr); |
b926417a | 11573 | return addr; |
38691318 | 11574 | } |
571dd617 | 11575 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11576 | throw_error (TLS_GENERIC_ERROR, |
11577 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11578 | else |
109c3e39 AC |
11579 | throw_error (TLS_GENERIC_ERROR, |
11580 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11581 | } |
11582 | else | |
109c3e39 AC |
11583 | throw_error (TLS_GENERIC_ERROR, |
11584 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11585 | /* Not reached. */ |
11586 | return 0; | |
11587 | } | |
11588 | ||
711e434b PM |
11589 | /* Provide thread local base, i.e. Thread Information Block address. |
11590 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11591 | ||
57810aa7 | 11592 | bool |
f6ac5f3d | 11593 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11594 | { |
4082afcc | 11595 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11596 | { |
11597 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11598 | char *p = rs->buf.data (); |
11599 | char *endp = p + get_remote_packet_size (); | |
711e434b PM |
11600 | enum packet_result result; |
11601 | ||
11602 | strcpy (p, "qGetTIBAddr:"); | |
11603 | p += strlen (p); | |
11604 | p = write_ptid (p, endp, ptid); | |
11605 | *p++ = '\0'; | |
11606 | ||
11607 | putpkt (rs->buf); | |
8d64371b | 11608 | getpkt (&rs->buf, 0); |
711e434b PM |
11609 | result = packet_ok (rs->buf, |
11610 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11611 | if (result == PACKET_OK) | |
11612 | { | |
b926417a | 11613 | ULONGEST val; |
8d64371b | 11614 | unpack_varlen_hex (rs->buf.data (), &val); |
711e434b | 11615 | if (addr) |
b926417a | 11616 | *addr = (CORE_ADDR) val; |
57810aa7 | 11617 | return true; |
711e434b PM |
11618 | } |
11619 | else if (result == PACKET_UNKNOWN) | |
11620 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11621 | else | |
11622 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11623 | } | |
11624 | else | |
11625 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11626 | /* Not reached. */ | |
57810aa7 | 11627 | return false; |
711e434b PM |
11628 | } |
11629 | ||
29709017 DJ |
11630 | /* Support for inferring a target description based on the current |
11631 | architecture and the size of a 'g' packet. While the 'g' packet | |
11632 | can have any size (since optional registers can be left off the | |
11633 | end), some sizes are easily recognizable given knowledge of the | |
11634 | approximate architecture. */ | |
11635 | ||
11636 | struct remote_g_packet_guess | |
11637 | { | |
eefce37f TT |
11638 | remote_g_packet_guess (int bytes_, const struct target_desc *tdesc_) |
11639 | : bytes (bytes_), | |
11640 | tdesc (tdesc_) | |
11641 | { | |
11642 | } | |
11643 | ||
29709017 DJ |
11644 | int bytes; |
11645 | const struct target_desc *tdesc; | |
11646 | }; | |
29709017 | 11647 | |
eefce37f | 11648 | struct remote_g_packet_data : public allocate_on_obstack |
29709017 | 11649 | { |
eefce37f | 11650 | std::vector<remote_g_packet_guess> guesses; |
29709017 DJ |
11651 | }; |
11652 | ||
11653 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11654 | ||
11655 | static void * | |
11656 | remote_g_packet_data_init (struct obstack *obstack) | |
11657 | { | |
eefce37f | 11658 | return new (obstack) remote_g_packet_data; |
29709017 DJ |
11659 | } |
11660 | ||
11661 | void | |
11662 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11663 | const struct target_desc *tdesc) | |
11664 | { | |
11665 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11666 | = ((struct remote_g_packet_data *) |
11667 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11668 | |
11669 | gdb_assert (tdesc != NULL); | |
11670 | ||
eefce37f TT |
11671 | for (const remote_g_packet_guess &guess : data->guesses) |
11672 | if (guess.bytes == bytes) | |
29709017 | 11673 | internal_error (__FILE__, __LINE__, |
9b20d036 | 11674 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11675 | bytes); |
11676 | ||
eefce37f | 11677 | data->guesses.emplace_back (bytes, tdesc); |
29709017 DJ |
11678 | } |
11679 | ||
eefce37f TT |
11680 | /* Return true if remote_read_description would do anything on this target |
11681 | and architecture, false otherwise. */ | |
d962ef82 | 11682 | |
eefce37f | 11683 | static bool |
d962ef82 DJ |
11684 | remote_read_description_p (struct target_ops *target) |
11685 | { | |
11686 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11687 | = ((struct remote_g_packet_data *) |
11688 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 | 11689 | |
eefce37f | 11690 | return !data->guesses.empty (); |
d962ef82 DJ |
11691 | } |
11692 | ||
f6ac5f3d PA |
11693 | const struct target_desc * |
11694 | remote_target::read_description () | |
29709017 DJ |
11695 | { |
11696 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11697 | = ((struct remote_g_packet_data *) |
11698 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11699 | |
d962ef82 DJ |
11700 | /* Do not try this during initial connection, when we do not know |
11701 | whether there is a running but stopped thread. */ | |
d7e15655 | 11702 | if (!target_has_execution || inferior_ptid == null_ptid) |
b6a8c27b | 11703 | return beneath ()->read_description (); |
d962ef82 | 11704 | |
eefce37f | 11705 | if (!data->guesses.empty ()) |
29709017 | 11706 | { |
29709017 DJ |
11707 | int bytes = send_g_packet (); |
11708 | ||
eefce37f TT |
11709 | for (const remote_g_packet_guess &guess : data->guesses) |
11710 | if (guess.bytes == bytes) | |
11711 | return guess.tdesc; | |
29709017 DJ |
11712 | |
11713 | /* We discard the g packet. A minor optimization would be to | |
11714 | hold on to it, and fill the register cache once we have selected | |
11715 | an architecture, but it's too tricky to do safely. */ | |
11716 | } | |
11717 | ||
b6a8c27b | 11718 | return beneath ()->read_description (); |
29709017 DJ |
11719 | } |
11720 | ||
a6b151f1 DJ |
11721 | /* Remote file transfer support. This is host-initiated I/O, not |
11722 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11723 | ||
11724 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11725 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11726 | decrease *LEFT. Otherwise raise an error. */ | |
11727 | ||
11728 | static void | |
a121b7c1 | 11729 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11730 | { |
11731 | int len = strlen (string); | |
11732 | ||
11733 | if (len > *left) | |
11734 | error (_("Packet too long for target.")); | |
11735 | ||
11736 | memcpy (*buffer, string, len); | |
11737 | *buffer += len; | |
11738 | *left -= len; | |
11739 | ||
11740 | /* NUL-terminate the buffer as a convenience, if there is | |
11741 | room. */ | |
11742 | if (*left) | |
11743 | **buffer = '\0'; | |
11744 | } | |
11745 | ||
11746 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11747 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11748 | decrease *LEFT. Otherwise raise an error. */ | |
11749 | ||
11750 | static void | |
11751 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11752 | int len) | |
11753 | { | |
11754 | if (2 * len > *left) | |
11755 | error (_("Packet too long for target.")); | |
11756 | ||
11757 | bin2hex (bytes, *buffer, len); | |
11758 | *buffer += 2 * len; | |
11759 | *left -= 2 * len; | |
11760 | ||
11761 | /* NUL-terminate the buffer as a convenience, if there is | |
11762 | room. */ | |
11763 | if (*left) | |
11764 | **buffer = '\0'; | |
11765 | } | |
11766 | ||
11767 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11768 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11769 | decrease *LEFT. Otherwise raise an error. */ | |
11770 | ||
11771 | static void | |
11772 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11773 | { | |
11774 | int len = hexnumlen (value); | |
11775 | ||
11776 | if (len > *left) | |
11777 | error (_("Packet too long for target.")); | |
11778 | ||
11779 | hexnumstr (*buffer, value); | |
11780 | *buffer += len; | |
11781 | *left -= len; | |
11782 | ||
11783 | /* NUL-terminate the buffer as a convenience, if there is | |
11784 | room. */ | |
11785 | if (*left) | |
11786 | **buffer = '\0'; | |
11787 | } | |
11788 | ||
11789 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11790 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11791 | was included, and *ATTACHMENT to point to the start of the annex | |
11792 | if any. The length of the packet isn't needed here; there may | |
11793 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11794 | ||
11795 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11796 | -1 is returned, the other variables may not be initialized. */ | |
11797 | ||
11798 | static int | |
11799 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11800 | int *remote_errno, char **attachment) | |
11801 | { | |
11802 | char *p, *p2; | |
11803 | ||
11804 | *remote_errno = 0; | |
11805 | *attachment = NULL; | |
11806 | ||
11807 | if (buffer[0] != 'F') | |
11808 | return -1; | |
11809 | ||
11810 | errno = 0; | |
11811 | *retcode = strtol (&buffer[1], &p, 16); | |
11812 | if (errno != 0 || p == &buffer[1]) | |
11813 | return -1; | |
11814 | ||
11815 | /* Check for ",errno". */ | |
11816 | if (*p == ',') | |
11817 | { | |
11818 | errno = 0; | |
11819 | *remote_errno = strtol (p + 1, &p2, 16); | |
11820 | if (errno != 0 || p + 1 == p2) | |
11821 | return -1; | |
11822 | p = p2; | |
11823 | } | |
11824 | ||
11825 | /* Check for ";attachment". If there is no attachment, the | |
11826 | packet should end here. */ | |
11827 | if (*p == ';') | |
11828 | { | |
11829 | *attachment = p + 1; | |
11830 | return 0; | |
11831 | } | |
11832 | else if (*p == '\0') | |
11833 | return 0; | |
11834 | else | |
11835 | return -1; | |
11836 | } | |
11837 | ||
11838 | /* Send a prepared I/O packet to the target and read its response. | |
11839 | The prepared packet is in the global RS->BUF before this function | |
11840 | is called, and the answer is there when we return. | |
11841 | ||
11842 | COMMAND_BYTES is the length of the request to send, which may include | |
11843 | binary data. WHICH_PACKET is the packet configuration to check | |
11844 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11845 | is set to the error number and -1 is returned. Otherwise the value | |
11846 | returned by the function is returned. | |
11847 | ||
11848 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11849 | attachment is expected; an error will be reported if there's a | |
11850 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11851 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11852 | attachment's length. */ | |
11853 | ||
6b8edb51 PA |
11854 | int |
11855 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
11856 | int *remote_errno, char **attachment, | |
11857 | int *attachment_len) | |
a6b151f1 DJ |
11858 | { |
11859 | struct remote_state *rs = get_remote_state (); | |
11860 | int ret, bytes_read; | |
11861 | char *attachment_tmp; | |
11862 | ||
20db9c52 | 11863 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11864 | { |
11865 | *remote_errno = FILEIO_ENOSYS; | |
11866 | return -1; | |
11867 | } | |
11868 | ||
8d64371b TT |
11869 | putpkt_binary (rs->buf.data (), command_bytes); |
11870 | bytes_read = getpkt_sane (&rs->buf, 0); | |
a6b151f1 DJ |
11871 | |
11872 | /* If it timed out, something is wrong. Don't try to parse the | |
11873 | buffer. */ | |
11874 | if (bytes_read < 0) | |
11875 | { | |
11876 | *remote_errno = FILEIO_EINVAL; | |
11877 | return -1; | |
11878 | } | |
11879 | ||
11880 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11881 | { | |
11882 | case PACKET_ERROR: | |
11883 | *remote_errno = FILEIO_EINVAL; | |
11884 | return -1; | |
11885 | case PACKET_UNKNOWN: | |
11886 | *remote_errno = FILEIO_ENOSYS; | |
11887 | return -1; | |
11888 | case PACKET_OK: | |
11889 | break; | |
11890 | } | |
11891 | ||
8d64371b | 11892 | if (remote_hostio_parse_result (rs->buf.data (), &ret, remote_errno, |
a6b151f1 DJ |
11893 | &attachment_tmp)) |
11894 | { | |
11895 | *remote_errno = FILEIO_EINVAL; | |
11896 | return -1; | |
11897 | } | |
11898 | ||
11899 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11900 | if ((attachment_tmp == NULL && attachment != NULL) | |
11901 | || (attachment_tmp != NULL && attachment == NULL)) | |
11902 | { | |
11903 | *remote_errno = FILEIO_EINVAL; | |
11904 | return -1; | |
11905 | } | |
11906 | ||
11907 | /* If an attachment was found, it must point into the packet buffer; | |
11908 | work out how many bytes there were. */ | |
11909 | if (attachment_tmp != NULL) | |
11910 | { | |
11911 | *attachment = attachment_tmp; | |
8d64371b | 11912 | *attachment_len = bytes_read - (*attachment - rs->buf.data ()); |
a6b151f1 DJ |
11913 | } |
11914 | ||
11915 | return ret; | |
11916 | } | |
11917 | ||
dd194f6b | 11918 | /* See declaration.h. */ |
80152258 | 11919 | |
dd194f6b PA |
11920 | void |
11921 | readahead_cache::invalidate () | |
80152258 | 11922 | { |
dd194f6b | 11923 | this->fd = -1; |
80152258 PA |
11924 | } |
11925 | ||
dd194f6b | 11926 | /* See declaration.h. */ |
80152258 | 11927 | |
dd194f6b PA |
11928 | void |
11929 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 11930 | { |
dd194f6b PA |
11931 | if (this->fd == fd) |
11932 | this->fd = -1; | |
80152258 PA |
11933 | } |
11934 | ||
15a201c8 GB |
11935 | /* Set the filesystem remote_hostio functions that take FILENAME |
11936 | arguments will use. Return 0 on success, or -1 if an error | |
11937 | occurs (and set *REMOTE_ERRNO). */ | |
11938 | ||
6b8edb51 PA |
11939 | int |
11940 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
11941 | int *remote_errno) | |
15a201c8 GB |
11942 | { |
11943 | struct remote_state *rs = get_remote_state (); | |
11944 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
8d64371b | 11945 | char *p = rs->buf.data (); |
15a201c8 GB |
11946 | int left = get_remote_packet_size () - 1; |
11947 | char arg[9]; | |
11948 | int ret; | |
11949 | ||
11950 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11951 | return 0; | |
11952 | ||
11953 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11954 | return 0; | |
11955 | ||
11956 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11957 | ||
11958 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11959 | remote_buffer_add_string (&p, &left, arg); | |
11960 | ||
8d64371b | 11961 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_setfs, |
15a201c8 GB |
11962 | remote_errno, NULL, NULL); |
11963 | ||
11964 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11965 | return 0; | |
11966 | ||
11967 | if (ret == 0) | |
11968 | rs->fs_pid = required_pid; | |
11969 | ||
11970 | return ret; | |
11971 | } | |
11972 | ||
12e2a5fd | 11973 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 11974 | |
6b8edb51 PA |
11975 | int |
11976 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
11977 | int flags, int mode, int warn_if_slow, | |
11978 | int *remote_errno) | |
a6b151f1 DJ |
11979 | { |
11980 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 11981 | char *p = rs->buf.data (); |
a6b151f1 DJ |
11982 | int left = get_remote_packet_size () - 1; |
11983 | ||
4313b8c0 GB |
11984 | if (warn_if_slow) |
11985 | { | |
11986 | static int warning_issued = 0; | |
11987 | ||
11988 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11989 | filename); | |
11990 | ||
11991 | if (!warning_issued) | |
11992 | { | |
11993 | warning (_("File transfers from remote targets can be slow." | |
11994 | " Use \"set sysroot\" to access files locally" | |
11995 | " instead.")); | |
11996 | warning_issued = 1; | |
11997 | } | |
11998 | } | |
11999 | ||
15a201c8 GB |
12000 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12001 | return -1; | |
12002 | ||
a6b151f1 DJ |
12003 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
12004 | ||
12005 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12006 | strlen (filename)); | |
12007 | remote_buffer_add_string (&p, &left, ","); | |
12008 | ||
12009 | remote_buffer_add_int (&p, &left, flags); | |
12010 | remote_buffer_add_string (&p, &left, ","); | |
12011 | ||
12012 | remote_buffer_add_int (&p, &left, mode); | |
12013 | ||
8d64371b | 12014 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_open, |
a6b151f1 DJ |
12015 | remote_errno, NULL, NULL); |
12016 | } | |
12017 | ||
f6ac5f3d PA |
12018 | int |
12019 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
12020 | int flags, int mode, int warn_if_slow, | |
12021 | int *remote_errno) | |
12022 | { | |
6b8edb51 | 12023 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
12024 | remote_errno); |
12025 | } | |
12026 | ||
12e2a5fd | 12027 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 12028 | |
6b8edb51 PA |
12029 | int |
12030 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12031 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12032 | { |
12033 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12034 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12035 | int left = get_remote_packet_size (); |
12036 | int out_len; | |
12037 | ||
dd194f6b | 12038 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12039 | |
a6b151f1 DJ |
12040 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
12041 | ||
12042 | remote_buffer_add_int (&p, &left, fd); | |
12043 | remote_buffer_add_string (&p, &left, ","); | |
12044 | ||
12045 | remote_buffer_add_int (&p, &left, offset); | |
12046 | remote_buffer_add_string (&p, &left, ","); | |
12047 | ||
124e13d9 | 12048 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
8d64371b TT |
12049 | (get_remote_packet_size () |
12050 | - (p - rs->buf.data ()))); | |
a6b151f1 | 12051 | |
8d64371b | 12052 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pwrite, |
a6b151f1 DJ |
12053 | remote_errno, NULL, NULL); |
12054 | } | |
12055 | ||
f6ac5f3d PA |
12056 | int |
12057 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12058 | ULONGEST offset, int *remote_errno) | |
12059 | { | |
6b8edb51 | 12060 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12061 | } |
12062 | ||
80152258 PA |
12063 | /* Helper for the implementation of to_fileio_pread. Read the file |
12064 | from the remote side with vFile:pread. */ | |
a6b151f1 | 12065 | |
6b8edb51 PA |
12066 | int |
12067 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
12068 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12069 | { |
12070 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12071 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12072 | char *attachment; |
12073 | int left = get_remote_packet_size (); | |
12074 | int ret, attachment_len; | |
12075 | int read_len; | |
12076 | ||
12077 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
12078 | ||
12079 | remote_buffer_add_int (&p, &left, fd); | |
12080 | remote_buffer_add_string (&p, &left, ","); | |
12081 | ||
12082 | remote_buffer_add_int (&p, &left, len); | |
12083 | remote_buffer_add_string (&p, &left, ","); | |
12084 | ||
12085 | remote_buffer_add_int (&p, &left, offset); | |
12086 | ||
8d64371b | 12087 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pread, |
a6b151f1 DJ |
12088 | remote_errno, &attachment, |
12089 | &attachment_len); | |
12090 | ||
12091 | if (ret < 0) | |
12092 | return ret; | |
12093 | ||
bc20a4af | 12094 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
12095 | read_buf, len); |
12096 | if (read_len != ret) | |
12097 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
12098 | ||
12099 | return ret; | |
12100 | } | |
12101 | ||
dd194f6b | 12102 | /* See declaration.h. */ |
80152258 | 12103 | |
dd194f6b PA |
12104 | int |
12105 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
12106 | ULONGEST offset) | |
80152258 | 12107 | { |
dd194f6b PA |
12108 | if (this->fd == fd |
12109 | && this->offset <= offset | |
12110 | && offset < this->offset + this->bufsize) | |
80152258 | 12111 | { |
dd194f6b | 12112 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
12113 | |
12114 | if (offset + len > max) | |
12115 | len = max - offset; | |
12116 | ||
dd194f6b | 12117 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
12118 | return len; |
12119 | } | |
12120 | ||
12121 | return 0; | |
12122 | } | |
12123 | ||
12124 | /* Implementation of to_fileio_pread. */ | |
12125 | ||
6b8edb51 PA |
12126 | int |
12127 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
12128 | ULONGEST offset, int *remote_errno) | |
80152258 PA |
12129 | { |
12130 | int ret; | |
12131 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12132 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12133 | |
dd194f6b | 12134 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12135 | if (ret > 0) |
12136 | { | |
12137 | cache->hit_count++; | |
12138 | ||
12139 | if (remote_debug) | |
12140 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
12141 | pulongest (cache->hit_count)); | |
12142 | return ret; | |
12143 | } | |
12144 | ||
12145 | cache->miss_count++; | |
12146 | if (remote_debug) | |
12147 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
12148 | pulongest (cache->miss_count)); | |
12149 | ||
12150 | cache->fd = fd; | |
12151 | cache->offset = offset; | |
12152 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 12153 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 | 12154 | |
6b8edb51 | 12155 | ret = remote_hostio_pread_vFile (cache->fd, cache->buf, cache->bufsize, |
80152258 PA |
12156 | cache->offset, remote_errno); |
12157 | if (ret <= 0) | |
12158 | { | |
dd194f6b | 12159 | cache->invalidate_fd (fd); |
80152258 PA |
12160 | return ret; |
12161 | } | |
12162 | ||
12163 | cache->bufsize = ret; | |
dd194f6b | 12164 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12165 | } |
12166 | ||
f6ac5f3d PA |
12167 | int |
12168 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
12169 | ULONGEST offset, int *remote_errno) | |
12170 | { | |
6b8edb51 | 12171 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12172 | } |
12173 | ||
12e2a5fd | 12174 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12175 | |
6b8edb51 PA |
12176 | int |
12177 | remote_target::remote_hostio_close (int fd, int *remote_errno) | |
a6b151f1 DJ |
12178 | { |
12179 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12180 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12181 | int left = get_remote_packet_size () - 1; |
12182 | ||
dd194f6b | 12183 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12184 | |
a6b151f1 DJ |
12185 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12186 | ||
12187 | remote_buffer_add_int (&p, &left, fd); | |
12188 | ||
8d64371b | 12189 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_close, |
a6b151f1 DJ |
12190 | remote_errno, NULL, NULL); |
12191 | } | |
12192 | ||
f6ac5f3d PA |
12193 | int |
12194 | remote_target::fileio_close (int fd, int *remote_errno) | |
12195 | { | |
6b8edb51 | 12196 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12197 | } |
12198 | ||
12e2a5fd | 12199 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12200 | |
6b8edb51 PA |
12201 | int |
12202 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
12203 | int *remote_errno) | |
a6b151f1 DJ |
12204 | { |
12205 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12206 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12207 | int left = get_remote_packet_size () - 1; |
12208 | ||
15a201c8 GB |
12209 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12210 | return -1; | |
12211 | ||
a6b151f1 DJ |
12212 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12213 | ||
12214 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12215 | strlen (filename)); | |
12216 | ||
8d64371b | 12217 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_unlink, |
a6b151f1 DJ |
12218 | remote_errno, NULL, NULL); |
12219 | } | |
12220 | ||
f6ac5f3d PA |
12221 | int |
12222 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
12223 | int *remote_errno) | |
12224 | { | |
6b8edb51 | 12225 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12226 | } |
12227 | ||
12e2a5fd | 12228 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12229 | |
f6ac5f3d PA |
12230 | gdb::optional<std::string> |
12231 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
12232 | int *remote_errno) | |
b9e7b9c3 UW |
12233 | { |
12234 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12235 | char *p = rs->buf.data (); |
b9e7b9c3 UW |
12236 | char *attachment; |
12237 | int left = get_remote_packet_size (); | |
12238 | int len, attachment_len; | |
12239 | int read_len; | |
b9e7b9c3 | 12240 | |
15a201c8 | 12241 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12242 | return {}; |
15a201c8 | 12243 | |
b9e7b9c3 UW |
12244 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12245 | ||
12246 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12247 | strlen (filename)); | |
12248 | ||
8d64371b | 12249 | len = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_readlink, |
b9e7b9c3 UW |
12250 | remote_errno, &attachment, |
12251 | &attachment_len); | |
12252 | ||
12253 | if (len < 0) | |
e0d3522b | 12254 | return {}; |
b9e7b9c3 | 12255 | |
e0d3522b | 12256 | std::string ret (len, '\0'); |
b9e7b9c3 | 12257 | |
bc20a4af | 12258 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12259 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12260 | if (read_len != len) |
12261 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12262 | ||
b9e7b9c3 UW |
12263 | return ret; |
12264 | } | |
12265 | ||
12e2a5fd | 12266 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12267 | |
f6ac5f3d PA |
12268 | int |
12269 | remote_target::fileio_fstat (int fd, struct stat *st, int *remote_errno) | |
0a93529c GB |
12270 | { |
12271 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12272 | char *p = rs->buf.data (); |
0a93529c GB |
12273 | int left = get_remote_packet_size (); |
12274 | int attachment_len, ret; | |
12275 | char *attachment; | |
12276 | struct fio_stat fst; | |
12277 | int read_len; | |
12278 | ||
464b0089 GB |
12279 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12280 | ||
12281 | remote_buffer_add_int (&p, &left, fd); | |
12282 | ||
8d64371b | 12283 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_fstat, |
464b0089 GB |
12284 | remote_errno, &attachment, |
12285 | &attachment_len); | |
12286 | if (ret < 0) | |
0a93529c | 12287 | { |
464b0089 GB |
12288 | if (*remote_errno != FILEIO_ENOSYS) |
12289 | return ret; | |
12290 | ||
0a93529c GB |
12291 | /* Strictly we should return -1, ENOSYS here, but when |
12292 | "set sysroot remote:" was implemented in August 2008 | |
12293 | BFD's need for a stat function was sidestepped with | |
12294 | this hack. This was not remedied until March 2015 | |
12295 | so we retain the previous behavior to avoid breaking | |
12296 | compatibility. | |
12297 | ||
12298 | Note that the memset is a March 2015 addition; older | |
12299 | GDBs set st_size *and nothing else* so the structure | |
12300 | would have garbage in all other fields. This might | |
12301 | break something but retaining the previous behavior | |
12302 | here would be just too wrong. */ | |
12303 | ||
12304 | memset (st, 0, sizeof (struct stat)); | |
12305 | st->st_size = INT_MAX; | |
12306 | return 0; | |
12307 | } | |
12308 | ||
0a93529c GB |
12309 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12310 | (gdb_byte *) &fst, sizeof (fst)); | |
12311 | ||
12312 | if (read_len != ret) | |
12313 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12314 | ||
12315 | if (read_len != sizeof (fst)) | |
12316 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12317 | read_len, (int) sizeof (fst)); | |
12318 | ||
12319 | remote_fileio_to_host_stat (&fst, st); | |
12320 | ||
12321 | return 0; | |
12322 | } | |
12323 | ||
12e2a5fd | 12324 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12325 | |
57810aa7 | 12326 | bool |
f6ac5f3d | 12327 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12328 | { |
12329 | /* Valgrind GDB presents itself as a remote target but works | |
12330 | on the local filesystem: it does not implement remote get | |
12331 | and users are not expected to set a sysroot. To handle | |
12332 | this case we treat the remote filesystem as local if the | |
12333 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12334 | does not support vFile:open. */ | |
a3be80c3 | 12335 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
12336 | { |
12337 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12338 | ||
12339 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12340 | { | |
12341 | int fd, remote_errno; | |
12342 | ||
12343 | /* Try opening a file to probe support. The supplied | |
12344 | filename is irrelevant, we only care about whether | |
12345 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12346 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12347 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12348 | &remote_errno); |
12349 | ||
12350 | if (fd >= 0) | |
6b8edb51 | 12351 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 GB |
12352 | |
12353 | ps = packet_support (PACKET_vFile_open); | |
12354 | } | |
12355 | ||
12356 | if (ps == PACKET_DISABLE) | |
12357 | { | |
12358 | static int warning_issued = 0; | |
12359 | ||
12360 | if (!warning_issued) | |
12361 | { | |
12362 | warning (_("remote target does not support file" | |
12363 | " transfer, attempting to access files" | |
12364 | " from local filesystem.")); | |
12365 | warning_issued = 1; | |
12366 | } | |
12367 | ||
57810aa7 | 12368 | return true; |
e3dd7556 GB |
12369 | } |
12370 | } | |
12371 | ||
57810aa7 | 12372 | return false; |
e3dd7556 GB |
12373 | } |
12374 | ||
a6b151f1 DJ |
12375 | static int |
12376 | remote_fileio_errno_to_host (int errnum) | |
12377 | { | |
12378 | switch (errnum) | |
12379 | { | |
12380 | case FILEIO_EPERM: | |
12381 | return EPERM; | |
12382 | case FILEIO_ENOENT: | |
12383 | return ENOENT; | |
12384 | case FILEIO_EINTR: | |
12385 | return EINTR; | |
12386 | case FILEIO_EIO: | |
12387 | return EIO; | |
12388 | case FILEIO_EBADF: | |
12389 | return EBADF; | |
12390 | case FILEIO_EACCES: | |
12391 | return EACCES; | |
12392 | case FILEIO_EFAULT: | |
12393 | return EFAULT; | |
12394 | case FILEIO_EBUSY: | |
12395 | return EBUSY; | |
12396 | case FILEIO_EEXIST: | |
12397 | return EEXIST; | |
12398 | case FILEIO_ENODEV: | |
12399 | return ENODEV; | |
12400 | case FILEIO_ENOTDIR: | |
12401 | return ENOTDIR; | |
12402 | case FILEIO_EISDIR: | |
12403 | return EISDIR; | |
12404 | case FILEIO_EINVAL: | |
12405 | return EINVAL; | |
12406 | case FILEIO_ENFILE: | |
12407 | return ENFILE; | |
12408 | case FILEIO_EMFILE: | |
12409 | return EMFILE; | |
12410 | case FILEIO_EFBIG: | |
12411 | return EFBIG; | |
12412 | case FILEIO_ENOSPC: | |
12413 | return ENOSPC; | |
12414 | case FILEIO_ESPIPE: | |
12415 | return ESPIPE; | |
12416 | case FILEIO_EROFS: | |
12417 | return EROFS; | |
12418 | case FILEIO_ENOSYS: | |
12419 | return ENOSYS; | |
12420 | case FILEIO_ENAMETOOLONG: | |
12421 | return ENAMETOOLONG; | |
12422 | } | |
12423 | return -1; | |
12424 | } | |
12425 | ||
12426 | static char * | |
12427 | remote_hostio_error (int errnum) | |
12428 | { | |
12429 | int host_error = remote_fileio_errno_to_host (errnum); | |
12430 | ||
12431 | if (host_error == -1) | |
12432 | error (_("Unknown remote I/O error %d"), errnum); | |
12433 | else | |
12434 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12435 | } | |
12436 | ||
440b7aec PA |
12437 | /* A RAII wrapper around a remote file descriptor. */ |
12438 | ||
12439 | class scoped_remote_fd | |
a6b151f1 | 12440 | { |
440b7aec | 12441 | public: |
6b8edb51 PA |
12442 | scoped_remote_fd (remote_target *remote, int fd) |
12443 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12444 | { |
12445 | } | |
a6b151f1 | 12446 | |
440b7aec PA |
12447 | ~scoped_remote_fd () |
12448 | { | |
12449 | if (m_fd != -1) | |
12450 | { | |
12451 | try | |
12452 | { | |
12453 | int remote_errno; | |
6b8edb51 | 12454 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12455 | } |
12456 | catch (...) | |
12457 | { | |
12458 | /* Swallow exception before it escapes the dtor. If | |
12459 | something goes wrong, likely the connection is gone, | |
12460 | and there's nothing else that can be done. */ | |
12461 | } | |
12462 | } | |
12463 | } | |
12464 | ||
12465 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12466 | ||
12467 | /* Release ownership of the file descriptor, and return it. */ | |
88a774b9 | 12468 | ATTRIBUTE_UNUSED_RESULT int release () noexcept |
440b7aec PA |
12469 | { |
12470 | int fd = m_fd; | |
12471 | m_fd = -1; | |
12472 | return fd; | |
12473 | } | |
12474 | ||
12475 | /* Return the owned file descriptor. */ | |
12476 | int get () const noexcept | |
12477 | { | |
12478 | return m_fd; | |
12479 | } | |
12480 | ||
12481 | private: | |
6b8edb51 PA |
12482 | /* The remote target. */ |
12483 | remote_target *m_remote; | |
12484 | ||
440b7aec PA |
12485 | /* The owned remote I/O file descriptor. */ |
12486 | int m_fd; | |
12487 | }; | |
a6b151f1 DJ |
12488 | |
12489 | void | |
12490 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12491 | { |
12492 | remote_target *remote = get_current_remote_target (); | |
12493 | ||
12494 | if (remote == nullptr) | |
12495 | error (_("command can only be used with remote target")); | |
12496 | ||
12497 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12498 | } | |
12499 | ||
12500 | void | |
12501 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12502 | int from_tty) | |
a6b151f1 | 12503 | { |
440b7aec | 12504 | int retcode, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12505 | int bytes_in_buffer; |
12506 | int saw_eof; | |
12507 | ULONGEST offset; | |
a6b151f1 | 12508 | |
d419f42d | 12509 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12510 | if (file == NULL) |
12511 | perror_with_name (local_file); | |
a6b151f1 | 12512 | |
440b7aec | 12513 | scoped_remote_fd fd |
6b8edb51 PA |
12514 | (this, remote_hostio_open (NULL, |
12515 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12516 | | FILEIO_O_TRUNC), | |
12517 | 0700, 0, &remote_errno)); | |
440b7aec | 12518 | if (fd.get () == -1) |
a6b151f1 DJ |
12519 | remote_hostio_error (remote_errno); |
12520 | ||
12521 | /* Send up to this many bytes at once. They won't all fit in the | |
12522 | remote packet limit, so we'll transfer slightly fewer. */ | |
12523 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12524 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12525 | |
a6b151f1 DJ |
12526 | bytes_in_buffer = 0; |
12527 | saw_eof = 0; | |
12528 | offset = 0; | |
12529 | while (bytes_in_buffer || !saw_eof) | |
12530 | { | |
12531 | if (!saw_eof) | |
12532 | { | |
5ca3b260 | 12533 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12534 | io_size - bytes_in_buffer, |
d419f42d | 12535 | file.get ()); |
a6b151f1 DJ |
12536 | if (bytes == 0) |
12537 | { | |
d419f42d | 12538 | if (ferror (file.get ())) |
a6b151f1 DJ |
12539 | error (_("Error reading %s."), local_file); |
12540 | else | |
12541 | { | |
12542 | /* EOF. Unless there is something still in the | |
12543 | buffer from the last iteration, we are done. */ | |
12544 | saw_eof = 1; | |
12545 | if (bytes_in_buffer == 0) | |
12546 | break; | |
12547 | } | |
12548 | } | |
12549 | } | |
12550 | else | |
12551 | bytes = 0; | |
12552 | ||
12553 | bytes += bytes_in_buffer; | |
12554 | bytes_in_buffer = 0; | |
12555 | ||
5ca3b260 | 12556 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 12557 | offset, &remote_errno); |
a6b151f1 DJ |
12558 | |
12559 | if (retcode < 0) | |
12560 | remote_hostio_error (remote_errno); | |
12561 | else if (retcode == 0) | |
12562 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12563 | else if (retcode < bytes) | |
12564 | { | |
12565 | /* Short write. Save the rest of the read data for the next | |
12566 | write. */ | |
12567 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 12568 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
12569 | } |
12570 | ||
12571 | offset += retcode; | |
12572 | } | |
12573 | ||
6b8edb51 | 12574 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12575 | remote_hostio_error (remote_errno); |
12576 | ||
12577 | if (from_tty) | |
12578 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
a6b151f1 DJ |
12579 | } |
12580 | ||
12581 | void | |
12582 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
12583 | { |
12584 | remote_target *remote = get_current_remote_target (); | |
12585 | ||
12586 | if (remote == nullptr) | |
12587 | error (_("command can only be used with remote target")); | |
12588 | ||
12589 | remote->remote_file_get (remote_file, local_file, from_tty); | |
12590 | } | |
12591 | ||
12592 | void | |
12593 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
12594 | int from_tty) | |
a6b151f1 | 12595 | { |
440b7aec | 12596 | int remote_errno, bytes, io_size; |
a6b151f1 | 12597 | ULONGEST offset; |
a6b151f1 | 12598 | |
440b7aec | 12599 | scoped_remote_fd fd |
6b8edb51 PA |
12600 | (this, remote_hostio_open (NULL, |
12601 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12602 | &remote_errno)); | |
440b7aec | 12603 | if (fd.get () == -1) |
a6b151f1 DJ |
12604 | remote_hostio_error (remote_errno); |
12605 | ||
d419f42d | 12606 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12607 | if (file == NULL) |
12608 | perror_with_name (local_file); | |
a6b151f1 DJ |
12609 | |
12610 | /* Send up to this many bytes at once. They won't all fit in the | |
12611 | remote packet limit, so we'll transfer slightly fewer. */ | |
12612 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12613 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12614 | |
a6b151f1 DJ |
12615 | offset = 0; |
12616 | while (1) | |
12617 | { | |
5ca3b260 | 12618 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 12619 | &remote_errno); |
a6b151f1 DJ |
12620 | if (bytes == 0) |
12621 | /* Success, but no bytes, means end-of-file. */ | |
12622 | break; | |
12623 | if (bytes == -1) | |
12624 | remote_hostio_error (remote_errno); | |
12625 | ||
12626 | offset += bytes; | |
12627 | ||
5ca3b260 | 12628 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
12629 | if (bytes == 0) |
12630 | perror_with_name (local_file); | |
12631 | } | |
12632 | ||
6b8edb51 | 12633 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12634 | remote_hostio_error (remote_errno); |
12635 | ||
12636 | if (from_tty) | |
12637 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
a6b151f1 DJ |
12638 | } |
12639 | ||
12640 | void | |
12641 | remote_file_delete (const char *remote_file, int from_tty) | |
12642 | { | |
6b8edb51 | 12643 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 12644 | |
6b8edb51 | 12645 | if (remote == nullptr) |
a6b151f1 DJ |
12646 | error (_("command can only be used with remote target")); |
12647 | ||
6b8edb51 PA |
12648 | remote->remote_file_delete (remote_file, from_tty); |
12649 | } | |
12650 | ||
12651 | void | |
12652 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
12653 | { | |
12654 | int retcode, remote_errno; | |
12655 | ||
12656 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
12657 | if (retcode == -1) |
12658 | remote_hostio_error (remote_errno); | |
12659 | ||
12660 | if (from_tty) | |
12661 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12662 | } | |
12663 | ||
12664 | static void | |
ac88e2de | 12665 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12666 | { |
d1a41061 PP |
12667 | if (args == NULL) |
12668 | error_no_arg (_("file to put")); | |
12669 | ||
773a1edc | 12670 | gdb_argv argv (args); |
a6b151f1 DJ |
12671 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12672 | error (_("Invalid parameters to remote put")); | |
12673 | ||
12674 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12675 | } |
12676 | ||
12677 | static void | |
ac88e2de | 12678 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12679 | { |
d1a41061 PP |
12680 | if (args == NULL) |
12681 | error_no_arg (_("file to get")); | |
12682 | ||
773a1edc | 12683 | gdb_argv argv (args); |
a6b151f1 DJ |
12684 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12685 | error (_("Invalid parameters to remote get")); | |
12686 | ||
12687 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12688 | } |
12689 | ||
12690 | static void | |
ac88e2de | 12691 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12692 | { |
d1a41061 PP |
12693 | if (args == NULL) |
12694 | error_no_arg (_("file to delete")); | |
12695 | ||
773a1edc | 12696 | gdb_argv argv (args); |
a6b151f1 DJ |
12697 | if (argv[0] == NULL || argv[1] != NULL) |
12698 | error (_("Invalid parameters to remote delete")); | |
12699 | ||
12700 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12701 | } |
12702 | ||
57810aa7 | 12703 | bool |
f6ac5f3d | 12704 | remote_target::can_execute_reverse () |
b2175913 | 12705 | { |
4082afcc PA |
12706 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12707 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 12708 | return true; |
40ab02ce | 12709 | else |
57810aa7 | 12710 | return false; |
b2175913 MS |
12711 | } |
12712 | ||
57810aa7 | 12713 | bool |
f6ac5f3d | 12714 | remote_target::supports_non_stop () |
74531fed | 12715 | { |
57810aa7 | 12716 | return true; |
74531fed PA |
12717 | } |
12718 | ||
57810aa7 | 12719 | bool |
f6ac5f3d | 12720 | remote_target::supports_disable_randomization () |
03583c20 UW |
12721 | { |
12722 | /* Only supported in extended mode. */ | |
57810aa7 | 12723 | return false; |
03583c20 UW |
12724 | } |
12725 | ||
57810aa7 | 12726 | bool |
f6ac5f3d | 12727 | remote_target::supports_multi_process () |
8a305172 PA |
12728 | { |
12729 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12730 | |
8020350c | 12731 | return remote_multi_process_p (rs); |
8a305172 PA |
12732 | } |
12733 | ||
70221824 | 12734 | static int |
f6ac5f3d | 12735 | remote_supports_cond_tracepoints () |
782b2b07 | 12736 | { |
4082afcc | 12737 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12738 | } |
12739 | ||
57810aa7 | 12740 | bool |
f6ac5f3d | 12741 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 12742 | { |
4082afcc | 12743 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12744 | } |
12745 | ||
70221824 | 12746 | static int |
f6ac5f3d | 12747 | remote_supports_fast_tracepoints () |
7a697b8d | 12748 | { |
4082afcc | 12749 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12750 | } |
12751 | ||
0fb4aa4b | 12752 | static int |
f6ac5f3d | 12753 | remote_supports_static_tracepoints () |
0fb4aa4b | 12754 | { |
4082afcc | 12755 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12756 | } |
12757 | ||
1e4d1764 | 12758 | static int |
f6ac5f3d | 12759 | remote_supports_install_in_trace () |
1e4d1764 | 12760 | { |
4082afcc | 12761 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12762 | } |
12763 | ||
57810aa7 | 12764 | bool |
f6ac5f3d | 12765 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 12766 | { |
4082afcc PA |
12767 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12768 | == PACKET_ENABLE); | |
d248b706 KY |
12769 | } |
12770 | ||
57810aa7 | 12771 | bool |
f6ac5f3d | 12772 | remote_target::supports_string_tracing () |
3065dfb6 | 12773 | { |
4082afcc | 12774 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12775 | } |
12776 | ||
57810aa7 | 12777 | bool |
f6ac5f3d | 12778 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 12779 | { |
4082afcc | 12780 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12781 | } |
12782 | ||
f6ac5f3d PA |
12783 | void |
12784 | remote_target::trace_init () | |
35b1e5cc | 12785 | { |
b6bb3468 PA |
12786 | struct remote_state *rs = get_remote_state (); |
12787 | ||
35b1e5cc | 12788 | putpkt ("QTinit"); |
b6bb3468 | 12789 | remote_get_noisy_reply (); |
8d64371b | 12790 | if (strcmp (rs->buf.data (), "OK") != 0) |
35b1e5cc SS |
12791 | error (_("Target does not support this command.")); |
12792 | } | |
12793 | ||
409873ef SS |
12794 | /* Recursive routine to walk through command list including loops, and |
12795 | download packets for each command. */ | |
12796 | ||
6b8edb51 PA |
12797 | void |
12798 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
12799 | struct command_line *cmds) | |
409873ef SS |
12800 | { |
12801 | struct remote_state *rs = get_remote_state (); | |
12802 | struct command_line *cmd; | |
12803 | ||
12804 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12805 | { | |
0df8b418 | 12806 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 12807 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 12808 | encode_source_string (num, addr, "cmd", cmd->line, |
8d64371b TT |
12809 | rs->buf.data () + strlen (rs->buf.data ()), |
12810 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 12811 | putpkt (rs->buf); |
b6bb3468 | 12812 | remote_get_noisy_reply (); |
8d64371b | 12813 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
12814 | warning (_("Target does not support source download.")); |
12815 | ||
12816 | if (cmd->control_type == while_control | |
12817 | || cmd->control_type == while_stepping_control) | |
12818 | { | |
12973681 | 12819 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 12820 | |
0df8b418 | 12821 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 12822 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 12823 | encode_source_string (num, addr, "cmd", "end", |
8d64371b TT |
12824 | rs->buf.data () + strlen (rs->buf.data ()), |
12825 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 12826 | putpkt (rs->buf); |
b6bb3468 | 12827 | remote_get_noisy_reply (); |
8d64371b | 12828 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
12829 | warning (_("Target does not support source download.")); |
12830 | } | |
12831 | } | |
12832 | } | |
12833 | ||
f6ac5f3d PA |
12834 | void |
12835 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc SS |
12836 | { |
12837 | CORE_ADDR tpaddr; | |
409873ef | 12838 | char addrbuf[40]; |
b44ec619 SM |
12839 | std::vector<std::string> tdp_actions; |
12840 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 12841 | char *pkt; |
e8ba3115 | 12842 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12843 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 12844 | struct remote_state *rs = get_remote_state (); |
3df3a985 | 12845 | int ret; |
ff36536c | 12846 | const char *err_msg = _("Tracepoint packet too large for target."); |
3df3a985 PFC |
12847 | size_t size_left; |
12848 | ||
12849 | /* We use a buffer other than rs->buf because we'll build strings | |
12850 | across multiple statements, and other statements in between could | |
12851 | modify rs->buf. */ | |
12852 | gdb::char_vector buf (get_remote_packet_size ()); | |
35b1e5cc | 12853 | |
dc673c81 | 12854 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12855 | |
12856 | tpaddr = loc->address; | |
53807e9f | 12857 | strcpy (addrbuf, phex (tpaddr, sizeof (CORE_ADDR))); |
3df3a985 PFC |
12858 | ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x", |
12859 | b->number, addrbuf, /* address */ | |
12860 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12861 | t->step_count, t->pass_count); | |
12862 | ||
12863 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12864 | error ("%s", err_msg); |
3df3a985 | 12865 | |
e8ba3115 YQ |
12866 | /* Fast tracepoints are mostly handled by the target, but we can |
12867 | tell the target how big of an instruction block should be moved | |
12868 | around. */ | |
12869 | if (b->type == bp_fast_tracepoint) | |
12870 | { | |
12871 | /* Only test for support at download time; we may not know | |
12872 | target capabilities at definition time. */ | |
12873 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12874 | { |
6b940e6a PL |
12875 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12876 | NULL)) | |
3df3a985 PFC |
12877 | { |
12878 | size_left = buf.size () - strlen (buf.data ()); | |
12879 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12880 | size_left, ":F%x", | |
12881 | gdb_insn_length (loc->gdbarch, tpaddr)); | |
12882 | ||
12883 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12884 | error ("%s", err_msg); |
3df3a985 | 12885 | } |
35b1e5cc | 12886 | else |
e8ba3115 YQ |
12887 | /* If it passed validation at definition but fails now, |
12888 | something is very wrong. */ | |
12889 | internal_error (__FILE__, __LINE__, | |
12890 | _("Fast tracepoint not " | |
12891 | "valid during download")); | |
35b1e5cc | 12892 | } |
e8ba3115 YQ |
12893 | else |
12894 | /* Fast tracepoints are functionally identical to regular | |
12895 | tracepoints, so don't take lack of support as a reason to | |
12896 | give up on the trace run. */ | |
12897 | warning (_("Target does not support fast tracepoints, " | |
12898 | "downloading %d as regular tracepoint"), b->number); | |
12899 | } | |
12900 | else if (b->type == bp_static_tracepoint) | |
12901 | { | |
12902 | /* Only test for support at download time; we may not know | |
12903 | target capabilities at definition time. */ | |
12904 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12905 | { |
e8ba3115 | 12906 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12907 | |
e8ba3115 | 12908 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
3df3a985 PFC |
12909 | { |
12910 | size_left = buf.size () - strlen (buf.data ()); | |
12911 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12912 | size_left, ":S"); | |
12913 | ||
12914 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12915 | error ("%s", err_msg); |
3df3a985 | 12916 | } |
0fb4aa4b | 12917 | else |
e8ba3115 | 12918 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12919 | } |
e8ba3115 YQ |
12920 | else |
12921 | /* Fast tracepoints are functionally identical to regular | |
12922 | tracepoints, so don't take lack of support as a reason | |
12923 | to give up on the trace run. */ | |
12924 | error (_("Target does not support static tracepoints")); | |
12925 | } | |
12926 | /* If the tracepoint has a conditional, make it into an agent | |
12927 | expression and append to the definition. */ | |
12928 | if (loc->cond) | |
12929 | { | |
12930 | /* Only test support at download time, we may not know target | |
12931 | capabilities at definition time. */ | |
12932 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12933 | { |
3df3a985 PFC |
12934 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, |
12935 | loc->cond.get ()); | |
12936 | ||
12937 | size_left = buf.size () - strlen (buf.data ()); | |
12938 | ||
12939 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12940 | size_left, ":X%x,", aexpr->len); | |
12941 | ||
12942 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12943 | error ("%s", err_msg); |
3df3a985 PFC |
12944 | |
12945 | size_left = buf.size () - strlen (buf.data ()); | |
12946 | ||
12947 | /* Two bytes to encode each aexpr byte, plus the terminating | |
12948 | null byte. */ | |
12949 | if (aexpr->len * 2 + 1 > size_left) | |
a7f25a84 | 12950 | error ("%s", err_msg); |
3df3a985 PFC |
12951 | |
12952 | pkt = buf.data () + strlen (buf.data ()); | |
12953 | ||
b44ec619 | 12954 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
12955 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
12956 | *pkt = '\0'; | |
35b1e5cc | 12957 | } |
e8ba3115 YQ |
12958 | else |
12959 | warning (_("Target does not support conditional tracepoints, " | |
12960 | "ignoring tp %d cond"), b->number); | |
12961 | } | |
35b1e5cc | 12962 | |
d9b3f62e | 12963 | if (b->commands || *default_collect) |
3df3a985 PFC |
12964 | { |
12965 | size_left = buf.size () - strlen (buf.data ()); | |
12966 | ||
12967 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12968 | size_left, "-"); | |
12969 | ||
12970 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12971 | error ("%s", err_msg); |
3df3a985 PFC |
12972 | } |
12973 | ||
12974 | putpkt (buf.data ()); | |
b6bb3468 | 12975 | remote_get_noisy_reply (); |
8d64371b | 12976 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 12977 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 12978 | |
e8ba3115 | 12979 | /* do_single_steps (t); */ |
b44ec619 SM |
12980 | for (auto action_it = tdp_actions.begin (); |
12981 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 12982 | { |
b44ec619 SM |
12983 | QUIT; /* Allow user to bail out with ^C. */ |
12984 | ||
aa6f3694 | 12985 | bool has_more = ((action_it + 1) != tdp_actions.end () |
b44ec619 SM |
12986 | || !stepping_actions.empty ()); |
12987 | ||
3df3a985 PFC |
12988 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c", |
12989 | b->number, addrbuf, /* address */ | |
12990 | action_it->c_str (), | |
12991 | has_more ? '-' : 0); | |
12992 | ||
12993 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12994 | error ("%s", err_msg); |
3df3a985 PFC |
12995 | |
12996 | putpkt (buf.data ()); | |
b44ec619 | 12997 | remote_get_noisy_reply (); |
8d64371b | 12998 | if (strcmp (rs->buf.data (), "OK")) |
b44ec619 | 12999 | error (_("Error on target while setting tracepoints.")); |
e8ba3115 | 13000 | } |
409873ef | 13001 | |
05abfc39 PFC |
13002 | for (auto action_it = stepping_actions.begin (); |
13003 | action_it != stepping_actions.end (); action_it++) | |
13004 | { | |
13005 | QUIT; /* Allow user to bail out with ^C. */ | |
13006 | ||
13007 | bool is_first = action_it == stepping_actions.begin (); | |
aa6f3694 | 13008 | bool has_more = (action_it + 1) != stepping_actions.end (); |
05abfc39 | 13009 | |
3df3a985 PFC |
13010 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s", |
13011 | b->number, addrbuf, /* address */ | |
13012 | is_first ? "S" : "", | |
13013 | action_it->c_str (), | |
13014 | has_more ? "-" : ""); | |
13015 | ||
13016 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13017 | error ("%s", err_msg); |
3df3a985 PFC |
13018 | |
13019 | putpkt (buf.data ()); | |
05abfc39 | 13020 | remote_get_noisy_reply (); |
8d64371b | 13021 | if (strcmp (rs->buf.data (), "OK")) |
05abfc39 PFC |
13022 | error (_("Error on target while setting tracepoints.")); |
13023 | } | |
b44ec619 | 13024 | |
4082afcc | 13025 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 13026 | { |
f00aae0f | 13027 | if (b->location != NULL) |
409873ef | 13028 | { |
3df3a985 PFC |
13029 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13030 | ||
13031 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13032 | error ("%s", err_msg); |
3df3a985 | 13033 | |
f00aae0f | 13034 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 13035 | event_location_to_string (b->location.get ()), |
3df3a985 PFC |
13036 | buf.data () + strlen (buf.data ()), |
13037 | buf.size () - strlen (buf.data ())); | |
13038 | putpkt (buf.data ()); | |
b6bb3468 | 13039 | remote_get_noisy_reply (); |
8d64371b | 13040 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13041 | warning (_("Target does not support source download.")); |
409873ef | 13042 | } |
e8ba3115 YQ |
13043 | if (b->cond_string) |
13044 | { | |
3df3a985 PFC |
13045 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13046 | ||
13047 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13048 | error ("%s", err_msg); |
3df3a985 | 13049 | |
e8ba3115 | 13050 | encode_source_string (b->number, loc->address, |
3df3a985 PFC |
13051 | "cond", b->cond_string, |
13052 | buf.data () + strlen (buf.data ()), | |
13053 | buf.size () - strlen (buf.data ())); | |
13054 | putpkt (buf.data ()); | |
b6bb3468 | 13055 | remote_get_noisy_reply (); |
8d64371b | 13056 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 YQ |
13057 | warning (_("Target does not support source download.")); |
13058 | } | |
13059 | remote_download_command_source (b->number, loc->address, | |
13060 | breakpoint_commands (b)); | |
35b1e5cc | 13061 | } |
35b1e5cc SS |
13062 | } |
13063 | ||
57810aa7 | 13064 | bool |
f6ac5f3d | 13065 | remote_target::can_download_tracepoint () |
1e4d1764 | 13066 | { |
1e51243a PA |
13067 | struct remote_state *rs = get_remote_state (); |
13068 | struct trace_status *ts; | |
13069 | int status; | |
13070 | ||
13071 | /* Don't try to install tracepoints until we've relocated our | |
13072 | symbols, and fetched and merged the target's tracepoint list with | |
13073 | ours. */ | |
13074 | if (rs->starting_up) | |
57810aa7 | 13075 | return false; |
1e51243a PA |
13076 | |
13077 | ts = current_trace_status (); | |
f6ac5f3d | 13078 | status = get_trace_status (ts); |
1e4d1764 YQ |
13079 | |
13080 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 13081 | return false; |
1e4d1764 YQ |
13082 | |
13083 | /* If we are in a tracing experiment, but remote stub doesn't support | |
13084 | installing tracepoint in trace, we have to return. */ | |
13085 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 13086 | return false; |
1e4d1764 | 13087 | |
57810aa7 | 13088 | return true; |
1e4d1764 YQ |
13089 | } |
13090 | ||
13091 | ||
f6ac5f3d PA |
13092 | void |
13093 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
13094 | { |
13095 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 13096 | char *p; |
35b1e5cc | 13097 | |
8d64371b | 13098 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
13099 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
13100 | tsv.builtin); | |
8d64371b TT |
13101 | p = rs->buf.data () + strlen (rs->buf.data ()); |
13102 | if ((p - rs->buf.data ()) + tsv.name.length () * 2 | |
13103 | >= get_remote_packet_size ()) | |
00bf0b85 | 13104 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 13105 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 13106 | *p++ = '\0'; |
35b1e5cc | 13107 | putpkt (rs->buf); |
b6bb3468 | 13108 | remote_get_noisy_reply (); |
8d64371b | 13109 | if (rs->buf[0] == '\0') |
ad91cd99 | 13110 | error (_("Target does not support this command.")); |
8d64371b | 13111 | if (strcmp (rs->buf.data (), "OK") != 0) |
ad91cd99 | 13112 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13113 | } |
13114 | ||
f6ac5f3d PA |
13115 | void |
13116 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13117 | { |
13118 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13119 | |
8d64371b | 13120 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTEnable:%x:%s", |
53807e9f TT |
13121 | location->owner->number, |
13122 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13123 | putpkt (rs->buf); |
b6bb3468 | 13124 | remote_get_noisy_reply (); |
8d64371b | 13125 | if (rs->buf[0] == '\0') |
d248b706 | 13126 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13127 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13128 | error (_("Error on target while enabling tracepoint.")); |
13129 | } | |
13130 | ||
f6ac5f3d PA |
13131 | void |
13132 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13133 | { |
13134 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13135 | |
8d64371b | 13136 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDisable:%x:%s", |
53807e9f TT |
13137 | location->owner->number, |
13138 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13139 | putpkt (rs->buf); |
b6bb3468 | 13140 | remote_get_noisy_reply (); |
8d64371b | 13141 | if (rs->buf[0] == '\0') |
d248b706 | 13142 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13143 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13144 | error (_("Error on target while disabling tracepoint.")); |
13145 | } | |
13146 | ||
f6ac5f3d PA |
13147 | void |
13148 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13149 | { |
13150 | asection *s; | |
13151 | bfd_size_type size; | |
608bcef2 | 13152 | bfd_vma vma; |
35b1e5cc | 13153 | int anysecs = 0; |
c2fa21f1 | 13154 | int offset = 0; |
35b1e5cc SS |
13155 | |
13156 | if (!exec_bfd) | |
13157 | return; /* No information to give. */ | |
13158 | ||
b6bb3468 PA |
13159 | struct remote_state *rs = get_remote_state (); |
13160 | ||
8d64371b TT |
13161 | strcpy (rs->buf.data (), "QTro"); |
13162 | offset = strlen (rs->buf.data ()); | |
35b1e5cc SS |
13163 | for (s = exec_bfd->sections; s; s = s->next) |
13164 | { | |
13165 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13166 | int sec_length; |
35b1e5cc SS |
13167 | |
13168 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 13169 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
13170 | (s->flags & SEC_READONLY) == 0) |
13171 | continue; | |
13172 | ||
13173 | anysecs = 1; | |
fd361982 AM |
13174 | vma = bfd_section_vma (s); |
13175 | size = bfd_section_size (s); | |
608bcef2 HZ |
13176 | sprintf_vma (tmp1, vma); |
13177 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 13178 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
8d64371b | 13179 | if (offset + sec_length + 1 > rs->buf.size ()) |
c2fa21f1 | 13180 | { |
4082afcc | 13181 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 13182 | warning (_("\ |
c2fa21f1 HZ |
13183 | Too many sections for read-only sections definition packet.")); |
13184 | break; | |
13185 | } | |
8d64371b | 13186 | xsnprintf (rs->buf.data () + offset, rs->buf.size () - offset, ":%s,%s", |
bba74b36 | 13187 | tmp1, tmp2); |
c2fa21f1 | 13188 | offset += sec_length; |
35b1e5cc SS |
13189 | } |
13190 | if (anysecs) | |
13191 | { | |
b6bb3468 | 13192 | putpkt (rs->buf); |
8d64371b | 13193 | getpkt (&rs->buf, 0); |
35b1e5cc SS |
13194 | } |
13195 | } | |
13196 | ||
f6ac5f3d PA |
13197 | void |
13198 | remote_target::trace_start () | |
35b1e5cc | 13199 | { |
b6bb3468 PA |
13200 | struct remote_state *rs = get_remote_state (); |
13201 | ||
35b1e5cc | 13202 | putpkt ("QTStart"); |
b6bb3468 | 13203 | remote_get_noisy_reply (); |
8d64371b | 13204 | if (rs->buf[0] == '\0') |
ad91cd99 | 13205 | error (_("Target does not support this command.")); |
8d64371b TT |
13206 | if (strcmp (rs->buf.data (), "OK") != 0) |
13207 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13208 | } |
13209 | ||
f6ac5f3d PA |
13210 | int |
13211 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13212 | { |
953b98d1 | 13213 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13214 | char *p = NULL; |
bd3eecc3 | 13215 | enum packet_result result; |
b6bb3468 | 13216 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13217 | |
4082afcc | 13218 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13219 | return -1; |
a744cf53 | 13220 | |
7b9a15e1 | 13221 | /* FIXME we need to get register block size some other way. */ |
5cd63fda | 13222 | trace_regblock_size |
9d6eea31 | 13223 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 13224 | |
049dc89b JK |
13225 | putpkt ("qTStatus"); |
13226 | ||
a70b8144 | 13227 | try |
67f41397 | 13228 | { |
b6bb3468 | 13229 | p = remote_get_noisy_reply (); |
67f41397 | 13230 | } |
230d2906 | 13231 | catch (const gdb_exception_error &ex) |
67f41397 | 13232 | { |
598d3636 JK |
13233 | if (ex.error != TARGET_CLOSE_ERROR) |
13234 | { | |
13235 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13236 | return -1; | |
13237 | } | |
eedc3f4f | 13238 | throw; |
67f41397 | 13239 | } |
00bf0b85 | 13240 | |
bd3eecc3 PA |
13241 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
13242 | ||
00bf0b85 | 13243 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13244 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13245 | return -1; |
35b1e5cc | 13246 | |
00bf0b85 | 13247 | /* We're working with a live target. */ |
f5911ea1 | 13248 | ts->filename = NULL; |
00bf0b85 | 13249 | |
00bf0b85 | 13250 | if (*p++ != 'T') |
8d64371b | 13251 | error (_("Bogus trace status reply from target: %s"), rs->buf.data ()); |
35b1e5cc | 13252 | |
84cebc4a YQ |
13253 | /* Function 'parse_trace_status' sets default value of each field of |
13254 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13255 | parse_trace_status (p, ts); |
13256 | ||
13257 | return ts->running; | |
35b1e5cc SS |
13258 | } |
13259 | ||
f6ac5f3d PA |
13260 | void |
13261 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13262 | struct uploaded_tp *utp) | |
f196051f SS |
13263 | { |
13264 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
13265 | char *reply; |
13266 | struct bp_location *loc; | |
13267 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 13268 | size_t size = get_remote_packet_size (); |
f196051f SS |
13269 | |
13270 | if (tp) | |
13271 | { | |
c1fc2657 | 13272 | tp->hit_count = 0; |
f196051f | 13273 | tp->traceframe_usage = 0; |
c1fc2657 | 13274 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
13275 | { |
13276 | /* If the tracepoint was never downloaded, don't go asking for | |
13277 | any status. */ | |
13278 | if (tp->number_on_target == 0) | |
13279 | continue; | |
8d64371b | 13280 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", tp->number_on_target, |
bba74b36 | 13281 | phex_nz (loc->address, 0)); |
f196051f | 13282 | putpkt (rs->buf); |
b6bb3468 | 13283 | reply = remote_get_noisy_reply (); |
f196051f SS |
13284 | if (reply && *reply) |
13285 | { | |
13286 | if (*reply == 'V') | |
13287 | parse_tracepoint_status (reply + 1, bp, utp); | |
13288 | } | |
13289 | } | |
13290 | } | |
13291 | else if (utp) | |
13292 | { | |
13293 | utp->hit_count = 0; | |
13294 | utp->traceframe_usage = 0; | |
8d64371b | 13295 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", utp->number, |
bba74b36 | 13296 | phex_nz (utp->addr, 0)); |
f196051f | 13297 | putpkt (rs->buf); |
b6bb3468 | 13298 | reply = remote_get_noisy_reply (); |
f196051f SS |
13299 | if (reply && *reply) |
13300 | { | |
13301 | if (*reply == 'V') | |
13302 | parse_tracepoint_status (reply + 1, bp, utp); | |
13303 | } | |
13304 | } | |
13305 | } | |
13306 | ||
f6ac5f3d PA |
13307 | void |
13308 | remote_target::trace_stop () | |
35b1e5cc | 13309 | { |
b6bb3468 PA |
13310 | struct remote_state *rs = get_remote_state (); |
13311 | ||
35b1e5cc | 13312 | putpkt ("QTStop"); |
b6bb3468 | 13313 | remote_get_noisy_reply (); |
8d64371b | 13314 | if (rs->buf[0] == '\0') |
ad91cd99 | 13315 | error (_("Target does not support this command.")); |
8d64371b TT |
13316 | if (strcmp (rs->buf.data (), "OK") != 0) |
13317 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13318 | } |
13319 | ||
f6ac5f3d PA |
13320 | int |
13321 | remote_target::trace_find (enum trace_find_type type, int num, | |
13322 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13323 | int *tpp) | |
35b1e5cc SS |
13324 | { |
13325 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 13326 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
35b1e5cc SS |
13327 | char *p, *reply; |
13328 | int target_frameno = -1, target_tracept = -1; | |
13329 | ||
e6e4e701 PA |
13330 | /* Lookups other than by absolute frame number depend on the current |
13331 | trace selected, so make sure it is correct on the remote end | |
13332 | first. */ | |
13333 | if (type != tfind_number) | |
13334 | set_remote_traceframe (); | |
13335 | ||
8d64371b | 13336 | p = rs->buf.data (); |
35b1e5cc SS |
13337 | strcpy (p, "QTFrame:"); |
13338 | p = strchr (p, '\0'); | |
13339 | switch (type) | |
13340 | { | |
13341 | case tfind_number: | |
bba74b36 | 13342 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13343 | break; |
13344 | case tfind_pc: | |
bba74b36 | 13345 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13346 | break; |
13347 | case tfind_tp: | |
bba74b36 | 13348 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13349 | break; |
13350 | case tfind_range: | |
bba74b36 YQ |
13351 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13352 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13353 | break; |
13354 | case tfind_outside: | |
bba74b36 YQ |
13355 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13356 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13357 | break; |
13358 | default: | |
9b20d036 | 13359 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13360 | } |
13361 | ||
13362 | putpkt (rs->buf); | |
b6bb3468 | 13363 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13364 | if (*reply == '\0') |
13365 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13366 | |
13367 | while (reply && *reply) | |
13368 | switch (*reply) | |
13369 | { | |
13370 | case 'F': | |
f197e0f1 VP |
13371 | p = ++reply; |
13372 | target_frameno = (int) strtol (p, &reply, 16); | |
13373 | if (reply == p) | |
13374 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13375 | /* Don't update our remote traceframe number cache on failure |
13376 | to select a remote traceframe. */ | |
f197e0f1 VP |
13377 | if (target_frameno == -1) |
13378 | return -1; | |
35b1e5cc SS |
13379 | break; |
13380 | case 'T': | |
f197e0f1 VP |
13381 | p = ++reply; |
13382 | target_tracept = (int) strtol (p, &reply, 16); | |
13383 | if (reply == p) | |
13384 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13385 | break; |
13386 | case 'O': /* "OK"? */ | |
13387 | if (reply[1] == 'K' && reply[2] == '\0') | |
13388 | reply += 2; | |
13389 | else | |
13390 | error (_("Bogus reply from target: %s"), reply); | |
13391 | break; | |
13392 | default: | |
13393 | error (_("Bogus reply from target: %s"), reply); | |
13394 | } | |
13395 | if (tpp) | |
13396 | *tpp = target_tracept; | |
e6e4e701 | 13397 | |
262e1174 | 13398 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13399 | return target_frameno; |
13400 | } | |
13401 | ||
57810aa7 | 13402 | bool |
f6ac5f3d | 13403 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13404 | { |
13405 | struct remote_state *rs = get_remote_state (); | |
13406 | char *reply; | |
13407 | ULONGEST uval; | |
13408 | ||
e6e4e701 PA |
13409 | set_remote_traceframe (); |
13410 | ||
8d64371b | 13411 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13412 | putpkt (rs->buf); |
b6bb3468 | 13413 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13414 | if (reply && *reply) |
13415 | { | |
13416 | if (*reply == 'V') | |
13417 | { | |
13418 | unpack_varlen_hex (reply + 1, &uval); | |
13419 | *val = (LONGEST) uval; | |
57810aa7 | 13420 | return true; |
35b1e5cc SS |
13421 | } |
13422 | } | |
57810aa7 | 13423 | return false; |
35b1e5cc SS |
13424 | } |
13425 | ||
f6ac5f3d PA |
13426 | int |
13427 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13428 | { |
13429 | struct remote_state *rs = get_remote_state (); | |
13430 | char *p, *reply; | |
13431 | ||
8d64371b | 13432 | p = rs->buf.data (); |
00bf0b85 SS |
13433 | strcpy (p, "QTSave:"); |
13434 | p += strlen (p); | |
8d64371b TT |
13435 | if ((p - rs->buf.data ()) + strlen (filename) * 2 |
13436 | >= get_remote_packet_size ()) | |
00bf0b85 | 13437 | error (_("Remote file name too long for trace save packet")); |
9f1b45b0 | 13438 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13439 | *p++ = '\0'; |
13440 | putpkt (rs->buf); | |
b6bb3468 | 13441 | reply = remote_get_noisy_reply (); |
d6c5869f | 13442 | if (*reply == '\0') |
ad91cd99 PA |
13443 | error (_("Target does not support this command.")); |
13444 | if (strcmp (reply, "OK") != 0) | |
13445 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13446 | return 0; |
13447 | } | |
13448 | ||
13449 | /* This is basically a memory transfer, but needs to be its own packet | |
13450 | because we don't know how the target actually organizes its trace | |
13451 | memory, plus we want to be able to ask for as much as possible, but | |
13452 | not be unhappy if we don't get as much as we ask for. */ | |
13453 | ||
f6ac5f3d PA |
13454 | LONGEST |
13455 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13456 | { |
13457 | struct remote_state *rs = get_remote_state (); | |
13458 | char *reply; | |
13459 | char *p; | |
13460 | int rslt; | |
13461 | ||
8d64371b | 13462 | p = rs->buf.data (); |
00bf0b85 SS |
13463 | strcpy (p, "qTBuffer:"); |
13464 | p += strlen (p); | |
13465 | p += hexnumstr (p, offset); | |
13466 | *p++ = ','; | |
13467 | p += hexnumstr (p, len); | |
13468 | *p++ = '\0'; | |
13469 | ||
13470 | putpkt (rs->buf); | |
b6bb3468 | 13471 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13472 | if (reply && *reply) |
13473 | { | |
13474 | /* 'l' by itself means we're at the end of the buffer and | |
13475 | there is nothing more to get. */ | |
13476 | if (*reply == 'l') | |
13477 | return 0; | |
13478 | ||
13479 | /* Convert the reply into binary. Limit the number of bytes to | |
13480 | convert according to our passed-in buffer size, rather than | |
13481 | what was returned in the packet; if the target is | |
13482 | unexpectedly generous and gives us a bigger reply than we | |
13483 | asked for, we don't want to crash. */ | |
b6bb3468 | 13484 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13485 | return rslt; |
13486 | } | |
13487 | ||
13488 | /* Something went wrong, flag as an error. */ | |
13489 | return -1; | |
13490 | } | |
13491 | ||
f6ac5f3d PA |
13492 | void |
13493 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13494 | { |
13495 | struct remote_state *rs = get_remote_state (); | |
13496 | ||
4082afcc | 13497 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13498 | { |
ad91cd99 PA |
13499 | char *reply; |
13500 | ||
8d64371b TT |
13501 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13502 | "QTDisconnected:%x", val); | |
33da3f1c | 13503 | putpkt (rs->buf); |
b6bb3468 | 13504 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13505 | if (*reply == '\0') |
33da3f1c | 13506 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13507 | if (strcmp (reply, "OK") != 0) |
13508 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
13509 | } |
13510 | else if (val) | |
13511 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13512 | } |
13513 | ||
f6ac5f3d PA |
13514 | int |
13515 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c | 13516 | { |
5b6d1e4f | 13517 | thread_info *info = find_thread_ptid (this, ptid); |
a744cf53 | 13518 | |
7aabaf9d SM |
13519 | if (info != NULL && info->priv != NULL) |
13520 | return get_remote_thread_info (info)->core; | |
13521 | ||
dc146f7c VP |
13522 | return -1; |
13523 | } | |
13524 | ||
f6ac5f3d PA |
13525 | void |
13526 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13527 | { |
13528 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13529 | char *reply; |
4daf5ac0 | 13530 | |
8d64371b TT |
13531 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13532 | "QTBuffer:circular:%x", val); | |
4daf5ac0 | 13533 | putpkt (rs->buf); |
b6bb3468 | 13534 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13535 | if (*reply == '\0') |
4daf5ac0 | 13536 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13537 | if (strcmp (reply, "OK") != 0) |
13538 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13539 | } |
13540 | ||
f6ac5f3d PA |
13541 | traceframe_info_up |
13542 | remote_target::traceframe_info () | |
b3b9301e | 13543 | { |
9018be22 | 13544 | gdb::optional<gdb::char_vector> text |
8b88a78e | 13545 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_TRACEFRAME_INFO, |
b7b030ad | 13546 | NULL); |
9018be22 SM |
13547 | if (text) |
13548 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13549 | |
13550 | return NULL; | |
13551 | } | |
13552 | ||
405f8e94 SS |
13553 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13554 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13555 | if the packet is not supported, and 0 if the minimum instruction | |
13556 | length is unknown. */ | |
13557 | ||
f6ac5f3d PA |
13558 | int |
13559 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13560 | { |
13561 | struct remote_state *rs = get_remote_state (); | |
13562 | char *reply; | |
13563 | ||
e886a173 PA |
13564 | /* If we're not debugging a process yet, the IPA can't be |
13565 | loaded. */ | |
13566 | if (!target_has_execution) | |
13567 | return 0; | |
13568 | ||
13569 | /* Make sure the remote is pointing at the right process. */ | |
13570 | set_general_process (); | |
13571 | ||
8d64371b | 13572 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13573 | putpkt (rs->buf); |
b6bb3468 | 13574 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13575 | if (*reply == '\0') |
13576 | return -1; | |
13577 | else | |
13578 | { | |
13579 | ULONGEST min_insn_len; | |
13580 | ||
13581 | unpack_varlen_hex (reply, &min_insn_len); | |
13582 | ||
13583 | return (int) min_insn_len; | |
13584 | } | |
13585 | } | |
13586 | ||
f6ac5f3d PA |
13587 | void |
13588 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13589 | { |
4082afcc | 13590 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13591 | { |
13592 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13593 | char *buf = rs->buf.data (); |
13594 | char *endbuf = buf + get_remote_packet_size (); | |
f6f899bf HAQ |
13595 | enum packet_result result; |
13596 | ||
13597 | gdb_assert (val >= 0 || val == -1); | |
13598 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13599 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13600 | if (val < 0) | |
13601 | { | |
13602 | *buf++ = '-'; | |
13603 | buf += hexnumstr (buf, (ULONGEST) -val); | |
13604 | } | |
13605 | else | |
13606 | buf += hexnumstr (buf, (ULONGEST) val); | |
13607 | ||
13608 | putpkt (rs->buf); | |
b6bb3468 | 13609 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13610 | result = packet_ok (rs->buf, |
13611 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13612 | ||
13613 | if (result != PACKET_OK) | |
8d64371b | 13614 | warning (_("Bogus reply from target: %s"), rs->buf.data ()); |
f6f899bf HAQ |
13615 | } |
13616 | } | |
13617 | ||
57810aa7 | 13618 | bool |
f6ac5f3d PA |
13619 | remote_target::set_trace_notes (const char *user, const char *notes, |
13620 | const char *stop_notes) | |
f196051f SS |
13621 | { |
13622 | struct remote_state *rs = get_remote_state (); | |
13623 | char *reply; | |
8d64371b TT |
13624 | char *buf = rs->buf.data (); |
13625 | char *endbuf = buf + get_remote_packet_size (); | |
f196051f SS |
13626 | int nbytes; |
13627 | ||
13628 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13629 | if (user) | |
13630 | { | |
13631 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13632 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13633 | buf += 2 * nbytes; |
13634 | *buf++ = ';'; | |
13635 | } | |
13636 | if (notes) | |
13637 | { | |
13638 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13639 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13640 | buf += 2 * nbytes; |
13641 | *buf++ = ';'; | |
13642 | } | |
13643 | if (stop_notes) | |
13644 | { | |
13645 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13646 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13647 | buf += 2 * nbytes; |
13648 | *buf++ = ';'; | |
13649 | } | |
13650 | /* Ensure the buffer is terminated. */ | |
13651 | *buf = '\0'; | |
13652 | ||
13653 | putpkt (rs->buf); | |
b6bb3468 | 13654 | reply = remote_get_noisy_reply (); |
f196051f | 13655 | if (*reply == '\0') |
57810aa7 | 13656 | return false; |
f196051f SS |
13657 | |
13658 | if (strcmp (reply, "OK") != 0) | |
13659 | error (_("Bogus reply from target: %s"), reply); | |
13660 | ||
57810aa7 | 13661 | return true; |
f196051f SS |
13662 | } |
13663 | ||
57810aa7 PA |
13664 | bool |
13665 | remote_target::use_agent (bool use) | |
d1feda86 | 13666 | { |
4082afcc | 13667 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13668 | { |
13669 | struct remote_state *rs = get_remote_state (); | |
13670 | ||
13671 | /* If the stub supports QAgent. */ | |
8d64371b | 13672 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 | 13673 | putpkt (rs->buf); |
8d64371b | 13674 | getpkt (&rs->buf, 0); |
d1feda86 | 13675 | |
8d64371b | 13676 | if (strcmp (rs->buf.data (), "OK") == 0) |
d1feda86 | 13677 | { |
f6ac5f3d | 13678 | ::use_agent = use; |
57810aa7 | 13679 | return true; |
d1feda86 YQ |
13680 | } |
13681 | } | |
13682 | ||
57810aa7 | 13683 | return false; |
d1feda86 YQ |
13684 | } |
13685 | ||
57810aa7 | 13686 | bool |
f6ac5f3d | 13687 | remote_target::can_use_agent () |
d1feda86 | 13688 | { |
4082afcc | 13689 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13690 | } |
13691 | ||
9accd112 MM |
13692 | struct btrace_target_info |
13693 | { | |
13694 | /* The ptid of the traced thread. */ | |
13695 | ptid_t ptid; | |
f4abbc16 MM |
13696 | |
13697 | /* The obtained branch trace configuration. */ | |
13698 | struct btrace_config conf; | |
9accd112 MM |
13699 | }; |
13700 | ||
f4abbc16 MM |
13701 | /* Reset our idea of our target's btrace configuration. */ |
13702 | ||
13703 | static void | |
6b8edb51 | 13704 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 13705 | { |
f4abbc16 MM |
13706 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
13707 | } | |
13708 | ||
f4abbc16 MM |
13709 | /* Synchronize the configuration with the target. */ |
13710 | ||
6b8edb51 PA |
13711 | void |
13712 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 13713 | { |
d33501a5 MM |
13714 | struct packet_config *packet; |
13715 | struct remote_state *rs; | |
13716 | char *buf, *pos, *endbuf; | |
13717 | ||
13718 | rs = get_remote_state (); | |
8d64371b | 13719 | buf = rs->buf.data (); |
d33501a5 MM |
13720 | endbuf = buf + get_remote_packet_size (); |
13721 | ||
13722 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13723 | if (packet_config_support (packet) == PACKET_ENABLE | |
13724 | && conf->bts.size != rs->btrace_config.bts.size) | |
13725 | { | |
13726 | pos = buf; | |
13727 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13728 | conf->bts.size); | |
13729 | ||
13730 | putpkt (buf); | |
8d64371b | 13731 | getpkt (&rs->buf, 0); |
d33501a5 MM |
13732 | |
13733 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13734 | { | |
13735 | if (buf[0] == 'E' && buf[1] == '.') | |
13736 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13737 | else | |
13738 | error (_("Failed to configure the BTS buffer size.")); | |
13739 | } | |
13740 | ||
13741 | rs->btrace_config.bts.size = conf->bts.size; | |
13742 | } | |
b20a6524 MM |
13743 | |
13744 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13745 | if (packet_config_support (packet) == PACKET_ENABLE | |
13746 | && conf->pt.size != rs->btrace_config.pt.size) | |
13747 | { | |
13748 | pos = buf; | |
13749 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13750 | conf->pt.size); | |
13751 | ||
13752 | putpkt (buf); | |
8d64371b | 13753 | getpkt (&rs->buf, 0); |
b20a6524 MM |
13754 | |
13755 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13756 | { | |
13757 | if (buf[0] == 'E' && buf[1] == '.') | |
13758 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13759 | else | |
13760 | error (_("Failed to configure the trace buffer size.")); | |
13761 | } | |
13762 | ||
13763 | rs->btrace_config.pt.size = conf->pt.size; | |
13764 | } | |
f4abbc16 MM |
13765 | } |
13766 | ||
13767 | /* Read the current thread's btrace configuration from the target and | |
13768 | store it into CONF. */ | |
13769 | ||
13770 | static void | |
13771 | btrace_read_config (struct btrace_config *conf) | |
13772 | { | |
9018be22 | 13773 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 13774 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE_CONF, ""); |
9018be22 SM |
13775 | if (xml) |
13776 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
13777 | } |
13778 | ||
c0272db5 TW |
13779 | /* Maybe reopen target btrace. */ |
13780 | ||
6b8edb51 PA |
13781 | void |
13782 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
13783 | { |
13784 | struct remote_state *rs = get_remote_state (); | |
c0272db5 | 13785 | int btrace_target_pushed = 0; |
15766370 | 13786 | #if !defined (HAVE_LIBIPT) |
c0272db5 | 13787 | int warned = 0; |
15766370 | 13788 | #endif |
c0272db5 | 13789 | |
aedbe3bb CM |
13790 | /* Don't bother walking the entirety of the remote thread list when |
13791 | we know the feature isn't supported by the remote. */ | |
13792 | if (packet_support (PACKET_qXfer_btrace_conf) != PACKET_ENABLE) | |
13793 | return; | |
13794 | ||
5ed8105e PA |
13795 | scoped_restore_current_thread restore_thread; |
13796 | ||
5b6d1e4f | 13797 | for (thread_info *tp : all_non_exited_threads (this)) |
c0272db5 TW |
13798 | { |
13799 | set_general_thread (tp->ptid); | |
13800 | ||
13801 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13802 | btrace_read_config (&rs->btrace_config); | |
13803 | ||
13804 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13805 | continue; | |
13806 | ||
13807 | #if !defined (HAVE_LIBIPT) | |
13808 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13809 | { | |
13810 | if (!warned) | |
13811 | { | |
13812 | warned = 1; | |
c4e12631 MM |
13813 | warning (_("Target is recording using Intel Processor Trace " |
13814 | "but support was disabled at compile time.")); | |
c0272db5 TW |
13815 | } |
13816 | ||
13817 | continue; | |
13818 | } | |
13819 | #endif /* !defined (HAVE_LIBIPT) */ | |
13820 | ||
13821 | /* Push target, once, but before anything else happens. This way our | |
13822 | changes to the threads will be cleaned up by unpushing the target | |
13823 | in case btrace_read_config () throws. */ | |
13824 | if (!btrace_target_pushed) | |
13825 | { | |
13826 | btrace_target_pushed = 1; | |
13827 | record_btrace_push_target (); | |
13828 | printf_filtered (_("Target is recording using %s.\n"), | |
13829 | btrace_format_string (rs->btrace_config.format)); | |
13830 | } | |
13831 | ||
13832 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13833 | tp->btrace.target->ptid = tp->ptid; | |
13834 | tp->btrace.target->conf = rs->btrace_config; | |
13835 | } | |
c0272db5 TW |
13836 | } |
13837 | ||
9accd112 MM |
13838 | /* Enable branch tracing. */ |
13839 | ||
f6ac5f3d PA |
13840 | struct btrace_target_info * |
13841 | remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf) | |
9accd112 MM |
13842 | { |
13843 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13844 | struct packet_config *packet = NULL; |
9accd112 | 13845 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
13846 | char *buf = rs->buf.data (); |
13847 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 13848 | |
b20a6524 MM |
13849 | switch (conf->format) |
13850 | { | |
13851 | case BTRACE_FORMAT_BTS: | |
13852 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13853 | break; | |
13854 | ||
13855 | case BTRACE_FORMAT_PT: | |
13856 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13857 | break; | |
13858 | } | |
13859 | ||
13860 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13861 | error (_("Target does not support branch tracing.")); |
13862 | ||
f4abbc16 MM |
13863 | btrace_sync_conf (conf); |
13864 | ||
9accd112 MM |
13865 | set_general_thread (ptid); |
13866 | ||
13867 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13868 | putpkt (rs->buf); | |
8d64371b | 13869 | getpkt (&rs->buf, 0); |
9accd112 MM |
13870 | |
13871 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13872 | { | |
13873 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13874 | error (_("Could not enable branch tracing for %s: %s"), | |
a068643d | 13875 | target_pid_to_str (ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
13876 | else |
13877 | error (_("Could not enable branch tracing for %s."), | |
a068643d | 13878 | target_pid_to_str (ptid).c_str ()); |
9accd112 MM |
13879 | } |
13880 | ||
8d749320 | 13881 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13882 | tinfo->ptid = ptid; |
13883 | ||
f4abbc16 MM |
13884 | /* If we fail to read the configuration, we lose some information, but the |
13885 | tracing itself is not impacted. */ | |
a70b8144 | 13886 | try |
492d29ea PA |
13887 | { |
13888 | btrace_read_config (&tinfo->conf); | |
13889 | } | |
230d2906 | 13890 | catch (const gdb_exception_error &err) |
492d29ea PA |
13891 | { |
13892 | if (err.message != NULL) | |
3d6e9d23 | 13893 | warning ("%s", err.what ()); |
492d29ea | 13894 | } |
f4abbc16 | 13895 | |
9accd112 MM |
13896 | return tinfo; |
13897 | } | |
13898 | ||
13899 | /* Disable branch tracing. */ | |
13900 | ||
f6ac5f3d PA |
13901 | void |
13902 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13903 | { |
13904 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13905 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13906 | char *buf = rs->buf.data (); |
13907 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 13908 | |
4082afcc | 13909 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13910 | error (_("Target does not support branch tracing.")); |
13911 | ||
13912 | set_general_thread (tinfo->ptid); | |
13913 | ||
13914 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13915 | putpkt (rs->buf); | |
8d64371b | 13916 | getpkt (&rs->buf, 0); |
9accd112 MM |
13917 | |
13918 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13919 | { | |
13920 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13921 | error (_("Could not disable branch tracing for %s: %s"), | |
a068643d | 13922 | target_pid_to_str (tinfo->ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
13923 | else |
13924 | error (_("Could not disable branch tracing for %s."), | |
a068643d | 13925 | target_pid_to_str (tinfo->ptid).c_str ()); |
9accd112 MM |
13926 | } |
13927 | ||
13928 | xfree (tinfo); | |
13929 | } | |
13930 | ||
13931 | /* Teardown branch tracing. */ | |
13932 | ||
f6ac5f3d PA |
13933 | void |
13934 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13935 | { |
13936 | /* We must not talk to the target during teardown. */ | |
13937 | xfree (tinfo); | |
13938 | } | |
13939 | ||
13940 | /* Read the branch trace. */ | |
13941 | ||
f6ac5f3d PA |
13942 | enum btrace_error |
13943 | remote_target::read_btrace (struct btrace_data *btrace, | |
13944 | struct btrace_target_info *tinfo, | |
13945 | enum btrace_read_type type) | |
9accd112 MM |
13946 | { |
13947 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 13948 | const char *annex; |
9accd112 | 13949 | |
4082afcc | 13950 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13951 | error (_("Target does not support branch tracing.")); |
13952 | ||
13953 | #if !defined(HAVE_LIBEXPAT) | |
13954 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13955 | #endif | |
13956 | ||
13957 | switch (type) | |
13958 | { | |
864089d2 | 13959 | case BTRACE_READ_ALL: |
9accd112 MM |
13960 | annex = "all"; |
13961 | break; | |
864089d2 | 13962 | case BTRACE_READ_NEW: |
9accd112 MM |
13963 | annex = "new"; |
13964 | break; | |
969c39fb MM |
13965 | case BTRACE_READ_DELTA: |
13966 | annex = "delta"; | |
13967 | break; | |
9accd112 MM |
13968 | default: |
13969 | internal_error (__FILE__, __LINE__, | |
13970 | _("Bad branch tracing read type: %u."), | |
13971 | (unsigned int) type); | |
13972 | } | |
13973 | ||
9018be22 | 13974 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 13975 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE, annex); |
9018be22 | 13976 | if (!xml) |
969c39fb | 13977 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 13978 | |
9018be22 | 13979 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 13980 | |
969c39fb | 13981 | return BTRACE_ERR_NONE; |
9accd112 MM |
13982 | } |
13983 | ||
f6ac5f3d PA |
13984 | const struct btrace_config * |
13985 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
13986 | { |
13987 | return &tinfo->conf; | |
13988 | } | |
13989 | ||
57810aa7 | 13990 | bool |
f6ac5f3d | 13991 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 13992 | { |
4082afcc PA |
13993 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13994 | == PACKET_ENABLE); | |
ced63ec0 GB |
13995 | } |
13996 | ||
9dd130a0 TT |
13997 | /* Implementation of to_load. */ |
13998 | ||
f6ac5f3d PA |
13999 | void |
14000 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
14001 | { |
14002 | generic_load (name, from_tty); | |
14003 | } | |
14004 | ||
c78fa86a GB |
14005 | /* Accepts an integer PID; returns a string representing a file that |
14006 | can be opened on the remote side to get the symbols for the child | |
14007 | process. Returns NULL if the operation is not supported. */ | |
14008 | ||
f6ac5f3d PA |
14009 | char * |
14010 | remote_target::pid_to_exec_file (int pid) | |
c78fa86a | 14011 | { |
9018be22 | 14012 | static gdb::optional<gdb::char_vector> filename; |
835205d0 | 14013 | char *annex = NULL; |
c78fa86a GB |
14014 | |
14015 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
14016 | return NULL; | |
14017 | ||
5b6d1e4f | 14018 | inferior *inf = find_inferior_pid (this, pid); |
835205d0 GB |
14019 | if (inf == NULL) |
14020 | internal_error (__FILE__, __LINE__, | |
14021 | _("not currently attached to process %d"), pid); | |
14022 | ||
14023 | if (!inf->fake_pid_p) | |
14024 | { | |
14025 | const int annex_size = 9; | |
14026 | ||
224c3ddb | 14027 | annex = (char *) alloca (annex_size); |
835205d0 GB |
14028 | xsnprintf (annex, annex_size, "%x", pid); |
14029 | } | |
14030 | ||
8b88a78e | 14031 | filename = target_read_stralloc (current_top_target (), |
c78fa86a GB |
14032 | TARGET_OBJECT_EXEC_FILE, annex); |
14033 | ||
9018be22 | 14034 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
14035 | } |
14036 | ||
750ce8d1 YQ |
14037 | /* Implement the to_can_do_single_step target_ops method. */ |
14038 | ||
f6ac5f3d PA |
14039 | int |
14040 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
14041 | { |
14042 | /* We can only tell whether target supports single step or not by | |
14043 | supported s and S vCont actions if the stub supports vContSupported | |
14044 | feature. If the stub doesn't support vContSupported feature, | |
14045 | we have conservatively to think target doesn't supports single | |
14046 | step. */ | |
14047 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
14048 | { | |
14049 | struct remote_state *rs = get_remote_state (); | |
14050 | ||
14051 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
6b8edb51 | 14052 | remote_vcont_probe (); |
750ce8d1 YQ |
14053 | |
14054 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
14055 | } | |
14056 | else | |
14057 | return 0; | |
14058 | } | |
14059 | ||
3a00c802 PA |
14060 | /* Implementation of the to_execution_direction method for the remote |
14061 | target. */ | |
14062 | ||
f6ac5f3d PA |
14063 | enum exec_direction_kind |
14064 | remote_target::execution_direction () | |
3a00c802 PA |
14065 | { |
14066 | struct remote_state *rs = get_remote_state (); | |
14067 | ||
14068 | return rs->last_resume_exec_dir; | |
14069 | } | |
14070 | ||
f6327dcb KB |
14071 | /* Return pointer to the thread_info struct which corresponds to |
14072 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
14073 | ||
f6ac5f3d PA |
14074 | thread_info * |
14075 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
14076 | int handle_len, | |
14077 | inferior *inf) | |
f6327dcb | 14078 | { |
5b6d1e4f | 14079 | for (thread_info *tp : all_non_exited_threads (this)) |
f6327dcb | 14080 | { |
7aabaf9d | 14081 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
14082 | |
14083 | if (tp->inf == inf && priv != NULL) | |
14084 | { | |
7aabaf9d | 14085 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 14086 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
7aabaf9d SM |
14087 | handle_len, priv->thread_handle.size ()); |
14088 | if (memcmp (thread_handle, priv->thread_handle.data (), | |
f6327dcb KB |
14089 | handle_len) == 0) |
14090 | return tp; | |
14091 | } | |
14092 | } | |
14093 | ||
14094 | return NULL; | |
14095 | } | |
14096 | ||
3d6c6204 KB |
14097 | gdb::byte_vector |
14098 | remote_target::thread_info_to_thread_handle (struct thread_info *tp) | |
14099 | { | |
14100 | remote_thread_info *priv = get_remote_thread_info (tp); | |
14101 | return priv->thread_handle; | |
14102 | } | |
14103 | ||
57810aa7 | 14104 | bool |
f6ac5f3d | 14105 | remote_target::can_async_p () |
6426a772 | 14106 | { |
5d93a237 TT |
14107 | struct remote_state *rs = get_remote_state (); |
14108 | ||
3015c064 SM |
14109 | /* We don't go async if the user has explicitly prevented it with the |
14110 | "maint set target-async" command. */ | |
c6ebd6cf | 14111 | if (!target_async_permitted) |
57810aa7 | 14112 | return false; |
75c99385 | 14113 | |
23860348 | 14114 | /* We're async whenever the serial device is. */ |
5d93a237 | 14115 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
14116 | } |
14117 | ||
57810aa7 | 14118 | bool |
f6ac5f3d | 14119 | remote_target::is_async_p () |
6426a772 | 14120 | { |
5d93a237 TT |
14121 | struct remote_state *rs = get_remote_state (); |
14122 | ||
c6ebd6cf | 14123 | if (!target_async_permitted) |
75c99385 | 14124 | /* We only enable async when the user specifically asks for it. */ |
57810aa7 | 14125 | return false; |
75c99385 | 14126 | |
23860348 | 14127 | /* We're async whenever the serial device is. */ |
5d93a237 | 14128 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
14129 | } |
14130 | ||
2acceee2 JM |
14131 | /* Pass the SERIAL event on and up to the client. One day this code |
14132 | will be able to delay notifying the client of an event until the | |
23860348 | 14133 | point where an entire packet has been received. */ |
2acceee2 | 14134 | |
2acceee2 JM |
14135 | static serial_event_ftype remote_async_serial_handler; |
14136 | ||
6426a772 | 14137 | static void |
819cc324 | 14138 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14139 | { |
2acceee2 JM |
14140 | /* Don't propogate error information up to the client. Instead let |
14141 | the client find out about the error by querying the target. */ | |
6a3753b3 | 14142 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
14143 | } |
14144 | ||
74531fed PA |
14145 | static void |
14146 | remote_async_inferior_event_handler (gdb_client_data data) | |
14147 | { | |
6b8edb51 | 14148 | inferior_event_handler (INF_REG_EVENT, data); |
74531fed PA |
14149 | } |
14150 | ||
5b6d1e4f PA |
14151 | int |
14152 | remote_target::async_wait_fd () | |
14153 | { | |
14154 | struct remote_state *rs = get_remote_state (); | |
14155 | return rs->remote_desc->fd; | |
14156 | } | |
14157 | ||
f6ac5f3d PA |
14158 | void |
14159 | remote_target::async (int enable) | |
2acceee2 | 14160 | { |
5d93a237 TT |
14161 | struct remote_state *rs = get_remote_state (); |
14162 | ||
6a3753b3 | 14163 | if (enable) |
2acceee2 | 14164 | { |
88b496c3 | 14165 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14166 | |
14167 | /* If there are pending events in the stop reply queue tell the | |
14168 | event loop to process them. */ | |
953edf2b | 14169 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 14170 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14171 | /* For simplicity, below we clear the pending events token |
14172 | without remembering whether it is marked, so here we always | |
14173 | mark it. If there's actually no pending notification to | |
14174 | process, this ends up being a no-op (other than a spurious | |
14175 | event-loop wakeup). */ | |
14176 | if (target_is_non_stop_p ()) | |
14177 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14178 | } |
14179 | else | |
b7d2e916 PA |
14180 | { |
14181 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14182 | /* If the core is disabling async, it doesn't want to be |
14183 | disturbed with target events. Clear all async event sources | |
14184 | too. */ | |
6b8edb51 | 14185 | clear_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14186 | if (target_is_non_stop_p ()) |
14187 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14188 | } |
6426a772 JM |
14189 | } |
14190 | ||
65706a29 PA |
14191 | /* Implementation of the to_thread_events method. */ |
14192 | ||
f6ac5f3d PA |
14193 | void |
14194 | remote_target::thread_events (int enable) | |
65706a29 PA |
14195 | { |
14196 | struct remote_state *rs = get_remote_state (); | |
14197 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
14198 | |
14199 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
14200 | return; | |
14201 | ||
8d64371b | 14202 | xsnprintf (rs->buf.data (), size, "QThreadEvents:%x", enable ? 1 : 0); |
65706a29 | 14203 | putpkt (rs->buf); |
8d64371b | 14204 | getpkt (&rs->buf, 0); |
65706a29 PA |
14205 | |
14206 | switch (packet_ok (rs->buf, | |
14207 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
14208 | { | |
14209 | case PACKET_OK: | |
8d64371b TT |
14210 | if (strcmp (rs->buf.data (), "OK") != 0) |
14211 | error (_("Remote refused setting thread events: %s"), rs->buf.data ()); | |
65706a29 PA |
14212 | break; |
14213 | case PACKET_ERROR: | |
8d64371b | 14214 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
65706a29 PA |
14215 | break; |
14216 | case PACKET_UNKNOWN: | |
14217 | break; | |
14218 | } | |
14219 | } | |
14220 | ||
d471ea57 | 14221 | static void |
981a3fb3 | 14222 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14223 | { |
37a105a1 | 14224 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14225 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14226 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14227 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14228 | |
2e783024 | 14229 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14230 | for (; list != NULL; list = list->next) |
14231 | if (strcmp (list->name, "Z-packet") == 0) | |
14232 | continue; | |
427c3a89 DJ |
14233 | else if (list->type == not_set_cmd) |
14234 | /* Alias commands are exactly like the original, except they | |
14235 | don't have the normal type. */ | |
14236 | continue; | |
14237 | else | |
37a105a1 | 14238 | { |
2e783024 | 14239 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14240 | |
112e8700 SM |
14241 | uiout->field_string ("name", list->name); |
14242 | uiout->text (": "); | |
427c3a89 | 14243 | if (list->type == show_cmd) |
f5c4fcd9 | 14244 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14245 | else |
14246 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 14247 | } |
d471ea57 | 14248 | } |
5a2468f5 | 14249 | |
0f71a2f6 | 14250 | |
23860348 | 14251 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
14252 | static void |
14253 | remote_new_objfile (struct objfile *objfile) | |
14254 | { | |
6b8edb51 | 14255 | remote_target *remote = get_current_remote_target (); |
5d93a237 | 14256 | |
6b8edb51 PA |
14257 | if (remote != NULL) /* Have a remote connection. */ |
14258 | remote->remote_check_symbols (); | |
dc8acb97 MS |
14259 | } |
14260 | ||
00bf0b85 SS |
14261 | /* Pull all the tracepoints defined on the target and create local |
14262 | data structures representing them. We don't want to create real | |
14263 | tracepoints yet, we don't want to mess up the user's existing | |
14264 | collection. */ | |
14265 | ||
f6ac5f3d PA |
14266 | int |
14267 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14268 | { |
00bf0b85 SS |
14269 | struct remote_state *rs = get_remote_state (); |
14270 | char *p; | |
d5551862 | 14271 | |
00bf0b85 SS |
14272 | /* Ask for a first packet of tracepoint definition. */ |
14273 | putpkt ("qTfP"); | |
8d64371b TT |
14274 | getpkt (&rs->buf, 0); |
14275 | p = rs->buf.data (); | |
00bf0b85 | 14276 | while (*p && *p != 'l') |
d5551862 | 14277 | { |
00bf0b85 SS |
14278 | parse_tracepoint_definition (p, utpp); |
14279 | /* Ask for another packet of tracepoint definition. */ | |
14280 | putpkt ("qTsP"); | |
8d64371b TT |
14281 | getpkt (&rs->buf, 0); |
14282 | p = rs->buf.data (); | |
d5551862 | 14283 | } |
00bf0b85 | 14284 | return 0; |
d5551862 SS |
14285 | } |
14286 | ||
f6ac5f3d PA |
14287 | int |
14288 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14289 | { |
00bf0b85 | 14290 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14291 | char *p; |
d5551862 | 14292 | |
00bf0b85 SS |
14293 | /* Ask for a first packet of variable definition. */ |
14294 | putpkt ("qTfV"); | |
8d64371b TT |
14295 | getpkt (&rs->buf, 0); |
14296 | p = rs->buf.data (); | |
00bf0b85 | 14297 | while (*p && *p != 'l') |
d5551862 | 14298 | { |
00bf0b85 SS |
14299 | parse_tsv_definition (p, utsvp); |
14300 | /* Ask for another packet of variable definition. */ | |
14301 | putpkt ("qTsV"); | |
8d64371b TT |
14302 | getpkt (&rs->buf, 0); |
14303 | p = rs->buf.data (); | |
d5551862 | 14304 | } |
00bf0b85 | 14305 | return 0; |
d5551862 SS |
14306 | } |
14307 | ||
c1e36e3e PA |
14308 | /* The "set/show range-stepping" show hook. */ |
14309 | ||
14310 | static void | |
14311 | show_range_stepping (struct ui_file *file, int from_tty, | |
14312 | struct cmd_list_element *c, | |
14313 | const char *value) | |
14314 | { | |
14315 | fprintf_filtered (file, | |
14316 | _("Debugger's willingness to use range stepping " | |
14317 | "is %s.\n"), value); | |
14318 | } | |
14319 | ||
6b8edb51 PA |
14320 | /* Return true if the vCont;r action is supported by the remote |
14321 | stub. */ | |
14322 | ||
14323 | bool | |
14324 | remote_target::vcont_r_supported () | |
14325 | { | |
14326 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
14327 | remote_vcont_probe (); | |
14328 | ||
14329 | return (packet_support (PACKET_vCont) == PACKET_ENABLE | |
14330 | && get_remote_state ()->supports_vCont.r); | |
14331 | } | |
14332 | ||
c1e36e3e PA |
14333 | /* The "set/show range-stepping" set hook. */ |
14334 | ||
14335 | static void | |
eb4c3f4a | 14336 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14337 | struct cmd_list_element *c) |
14338 | { | |
6b8edb51 PA |
14339 | /* When enabling, check whether range stepping is actually supported |
14340 | by the target, and warn if not. */ | |
c1e36e3e PA |
14341 | if (use_range_stepping) |
14342 | { | |
6b8edb51 PA |
14343 | remote_target *remote = get_current_remote_target (); |
14344 | if (remote == NULL | |
14345 | || !remote->vcont_r_supported ()) | |
14346 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
14347 | } |
14348 | } | |
14349 | ||
6c265988 | 14350 | void _initialize_remote (); |
c906108c | 14351 | void |
6c265988 | 14352 | _initialize_remote () |
c906108c | 14353 | { |
9a7071a8 | 14354 | struct cmd_list_element *cmd; |
6f937416 | 14355 | const char *cmd_name; |
ea9c271d | 14356 | |
0f71a2f6 | 14357 | /* architecture specific data */ |
29709017 DJ |
14358 | remote_g_packet_data_handle = |
14359 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14360 | |
d9f719f1 PA |
14361 | add_target (remote_target_info, remote_target::open); |
14362 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 14363 | |
dc8acb97 | 14364 | /* Hook into new objfile notification. */ |
76727919 | 14365 | gdb::observers::new_objfile.attach (remote_new_objfile); |
dc8acb97 | 14366 | |
c906108c SS |
14367 | #if 0 |
14368 | init_remote_threadtests (); | |
14369 | #endif | |
14370 | ||
23860348 | 14371 | /* set/show remote ... */ |
d471ea57 | 14372 | |
0743fc83 | 14373 | add_basic_prefix_cmd ("remote", class_maintenance, _("\ |
590042fc | 14374 | Remote protocol specific variables.\n\ |
5a2468f5 | 14375 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14376 | the packets being used."), |
0743fc83 TT |
14377 | &remote_set_cmdlist, "set remote ", |
14378 | 0 /* allow-unknown */, &setlist); | |
1bedd215 | 14379 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
590042fc | 14380 | Remote protocol specific variables.\n\ |
5a2468f5 | 14381 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14382 | the packets being used."), |
cff3e48b | 14383 | &remote_show_cmdlist, "show remote ", |
23860348 | 14384 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14385 | |
1a966eab AC |
14386 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14387 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14388 | Argument is a single section name (default: all loaded sections).\n\ |
14389 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14390 | &cmdlist); |
14391 | ||
1a966eab AC |
14392 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14393 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14394 | maintenance packet TEXT\n\ |
14395 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14396 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14397 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14398 | terminating `#' character and checksum."), |
c906108c SS |
14399 | &maintenancelist); |
14400 | ||
7915a72c AC |
14401 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
14402 | Set whether to send break if interrupted."), _("\ | |
14403 | Show whether to send break if interrupted."), _("\ | |
14404 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 14405 | set_remotebreak, show_remotebreak, |
e707bbc2 | 14406 | &setlist, &showlist); |
9a7071a8 JB |
14407 | cmd_name = "remotebreak"; |
14408 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
14409 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
14410 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
14411 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
14412 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
14413 | ||
14414 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14415 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14416 | _("\ | |
9a7071a8 JB |
14417 | Set interrupt sequence to remote target."), _("\ |
14418 | Show interrupt sequence to remote target."), _("\ | |
14419 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14420 | NULL, show_interrupt_sequence, | |
14421 | &remote_set_cmdlist, | |
14422 | &remote_show_cmdlist); | |
14423 | ||
14424 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14425 | &interrupt_on_connect, _("\ | |
590042fc PW |
14426 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ |
14427 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ | |
9a7071a8 JB |
14428 | If set, interrupt sequence is sent to remote target."), |
14429 | NULL, NULL, | |
14430 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14431 | |
23860348 | 14432 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14433 | |
1a966eab AC |
14434 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14435 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14436 | &setlist); |
1a966eab AC |
14437 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14438 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14439 | &showlist); |
14440 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14441 | set_memory_write_packet_size, _("\ |
14442 | Set the maximum number of bytes per memory-write packet.\n\ | |
14443 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14444 | default packet size. The actual limit is further reduced\n\ | |
14445 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14446 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14447 | &remote_set_cmdlist); |
14448 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14449 | set_memory_read_packet_size, _("\ |
14450 | Set the maximum number of bytes per memory-read packet.\n\ | |
14451 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14452 | default packet size. The actual limit is further reduced\n\ | |
14453 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14454 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14455 | &remote_set_cmdlist); |
14456 | add_cmd ("memory-write-packet-size", no_class, | |
14457 | show_memory_write_packet_size, | |
1a966eab | 14458 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14459 | &remote_show_cmdlist); |
14460 | add_cmd ("memory-read-packet-size", no_class, | |
14461 | show_memory_read_packet_size, | |
1a966eab | 14462 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14463 | &remote_show_cmdlist); |
c906108c | 14464 | |
055303e2 | 14465 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14466 | &remote_hw_watchpoint_limit, _("\ |
14467 | Set the maximum number of target hardware watchpoints."), _("\ | |
14468 | Show the maximum number of target hardware watchpoints."), _("\ | |
055303e2 AB |
14469 | Specify \"unlimited\" for unlimited hardware watchpoints."), |
14470 | NULL, show_hardware_watchpoint_limit, | |
14471 | &remote_set_cmdlist, | |
14472 | &remote_show_cmdlist); | |
14473 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-length-limit", | |
14474 | no_class, | |
480a3f21 PW |
14475 | &remote_hw_watchpoint_length_limit, _("\ |
14476 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14477 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
055303e2 AB |
14478 | Specify \"unlimited\" to allow watchpoints of unlimited size."), |
14479 | NULL, show_hardware_watchpoint_length_limit, | |
480a3f21 | 14480 | &remote_set_cmdlist, &remote_show_cmdlist); |
055303e2 | 14481 | add_setshow_zuinteger_unlimited_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14482 | &remote_hw_breakpoint_limit, _("\ |
14483 | Set the maximum number of target hardware breakpoints."), _("\ | |
14484 | Show the maximum number of target hardware breakpoints."), _("\ | |
055303e2 AB |
14485 | Specify \"unlimited\" for unlimited hardware breakpoints."), |
14486 | NULL, show_hardware_breakpoint_limit, | |
b3f42336 | 14487 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14488 | |
1b493192 PA |
14489 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14490 | &remote_address_size, _("\ | |
4d28ad1e AC |
14491 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14492 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14493 | NULL, |
14494 | NULL, /* FIXME: i18n: */ | |
14495 | &setlist, &showlist); | |
c906108c | 14496 | |
ca4f7f8b PA |
14497 | init_all_packet_configs (); |
14498 | ||
444abaca | 14499 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14500 | "X", "binary-download", 1); |
0f71a2f6 | 14501 | |
444abaca | 14502 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14503 | "vCont", "verbose-resume", 0); |
506fb367 | 14504 | |
89be2091 DJ |
14505 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14506 | "QPassSignals", "pass-signals", 0); | |
14507 | ||
82075af2 JS |
14508 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14509 | "QCatchSyscalls", "catch-syscalls", 0); | |
14510 | ||
9b224c5e PA |
14511 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14512 | "QProgramSignals", "program-signals", 0); | |
14513 | ||
bc3b087d SDJ |
14514 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
14515 | "QSetWorkingDir", "set-working-dir", 0); | |
14516 | ||
aefd8b33 SDJ |
14517 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14518 | "QStartupWithShell", "startup-with-shell", 0); | |
14519 | ||
0a2dde4a SDJ |
14520 | add_packet_config_cmd (&remote_protocol_packets |
14521 | [PACKET_QEnvironmentHexEncoded], | |
14522 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14523 | 0); | |
14524 | ||
14525 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14526 | "QEnvironmentReset", "environment-reset", | |
14527 | 0); | |
14528 | ||
14529 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14530 | "QEnvironmentUnset", "environment-unset", | |
14531 | 0); | |
14532 | ||
444abaca | 14533 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14534 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14535 | |
444abaca | 14536 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14537 | "P", "set-register", 1); |
d471ea57 | 14538 | |
444abaca | 14539 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14540 | "p", "fetch-register", 1); |
b96ec7ac | 14541 | |
444abaca | 14542 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14543 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14544 | |
444abaca | 14545 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14546 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14547 | |
444abaca | 14548 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14549 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14550 | |
444abaca | 14551 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14552 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14553 | |
444abaca | 14554 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14555 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14556 | |
0876f84a DJ |
14557 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14558 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14559 | |
c78fa86a GB |
14560 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14561 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14562 | ||
23181151 DJ |
14563 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14564 | "qXfer:features:read", "target-features", 0); | |
14565 | ||
cfa9d6d9 DJ |
14566 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14567 | "qXfer:libraries:read", "library-info", 0); | |
14568 | ||
2268b414 JK |
14569 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14570 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14571 | ||
fd79ecee DJ |
14572 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14573 | "qXfer:memory-map:read", "memory-map", 0); | |
14574 | ||
07e059b5 VP |
14575 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
14576 | "qXfer:osdata:read", "osdata", 0); | |
14577 | ||
dc146f7c VP |
14578 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14579 | "qXfer:threads:read", "threads", 0); | |
14580 | ||
4aa995e1 PA |
14581 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
14582 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
14583 | ||
14584 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
14585 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
14586 | ||
b3b9301e PA |
14587 | add_packet_config_cmd |
14588 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14589 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14590 | |
169081d0 TG |
14591 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14592 | "qXfer:uib:read", "unwind-info-block", 0); | |
14593 | ||
444abaca | 14594 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14595 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14596 | 0); |
14597 | ||
711e434b PM |
14598 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14599 | "qGetTIBAddr", "get-thread-information-block-address", | |
14600 | 0); | |
14601 | ||
40ab02ce MS |
14602 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14603 | "bc", "reverse-continue", 0); | |
14604 | ||
14605 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14606 | "bs", "reverse-step", 0); | |
14607 | ||
be2a5f71 DJ |
14608 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14609 | "qSupported", "supported-packets", 0); | |
14610 | ||
08388c79 DE |
14611 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14612 | "qSearch:memory", "search-memory", 0); | |
14613 | ||
bd3eecc3 PA |
14614 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14615 | "qTStatus", "trace-status", 0); | |
14616 | ||
15a201c8 GB |
14617 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14618 | "vFile:setfs", "hostio-setfs", 0); | |
14619 | ||
a6b151f1 DJ |
14620 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14621 | "vFile:open", "hostio-open", 0); | |
14622 | ||
14623 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14624 | "vFile:pread", "hostio-pread", 0); | |
14625 | ||
14626 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14627 | "vFile:pwrite", "hostio-pwrite", 0); | |
14628 | ||
14629 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14630 | "vFile:close", "hostio-close", 0); | |
14631 | ||
14632 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14633 | "vFile:unlink", "hostio-unlink", 0); | |
14634 | ||
b9e7b9c3 UW |
14635 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14636 | "vFile:readlink", "hostio-readlink", 0); | |
14637 | ||
0a93529c GB |
14638 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14639 | "vFile:fstat", "hostio-fstat", 0); | |
14640 | ||
2d717e4f DJ |
14641 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14642 | "vAttach", "attach", 0); | |
14643 | ||
14644 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14645 | "vRun", "run", 0); | |
14646 | ||
a6f3e723 SL |
14647 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14648 | "QStartNoAckMode", "noack", 0); | |
14649 | ||
82f73884 PA |
14650 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14651 | "vKill", "kill", 0); | |
14652 | ||
0b16c5cf PA |
14653 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14654 | "qAttached", "query-attached", 0); | |
14655 | ||
782b2b07 | 14656 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14657 | "ConditionalTracepoints", |
14658 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14659 | |
14660 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14661 | "ConditionalBreakpoints", | |
14662 | "conditional-breakpoints", 0); | |
14663 | ||
d3ce09f5 SS |
14664 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14665 | "BreakpointCommands", | |
14666 | "breakpoint-commands", 0); | |
14667 | ||
7a697b8d SS |
14668 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14669 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14670 | |
409873ef SS |
14671 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14672 | "TracepointSource", "TracepointSource", 0); | |
14673 | ||
d914c394 SS |
14674 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14675 | "QAllow", "allow", 0); | |
14676 | ||
0fb4aa4b PA |
14677 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14678 | "StaticTracepoints", "static-tracepoints", 0); | |
14679 | ||
1e4d1764 YQ |
14680 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14681 | "InstallInTrace", "install-in-trace", 0); | |
14682 | ||
0fb4aa4b PA |
14683 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
14684 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
14685 | ||
78d85199 YQ |
14686 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14687 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14688 | ||
03583c20 UW |
14689 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14690 | "QDisableRandomization", "disable-randomization", 0); | |
14691 | ||
d1feda86 YQ |
14692 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14693 | "QAgent", "agent", 0); | |
14694 | ||
f6f899bf HAQ |
14695 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14696 | "QTBuffer:size", "trace-buffer-size", 0); | |
14697 | ||
9accd112 MM |
14698 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14699 | "Qbtrace:off", "disable-btrace", 0); | |
14700 | ||
14701 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14702 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14703 | ||
14704 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14705 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14706 | |
14707 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14708 | "qXfer:btrace", "read-btrace", 0); | |
14709 | ||
f4abbc16 MM |
14710 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14711 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14712 | ||
d33501a5 MM |
14713 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14714 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14715 | ||
73b8c1fd PA |
14716 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14717 | "multiprocess-feature", "multiprocess-feature", 0); | |
14718 | ||
f7e6eed5 PA |
14719 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
14720 | "swbreak-feature", "swbreak-feature", 0); | |
14721 | ||
14722 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
14723 | "hwbreak-feature", "hwbreak-feature", 0); | |
14724 | ||
89245bc0 DB |
14725 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14726 | "fork-event-feature", "fork-event-feature", 0); | |
14727 | ||
14728 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14729 | "vfork-event-feature", "vfork-event-feature", 0); | |
14730 | ||
b20a6524 MM |
14731 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14732 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14733 | ||
750ce8d1 YQ |
14734 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14735 | "vContSupported", "verbose-resume-supported", 0); | |
14736 | ||
94585166 DB |
14737 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14738 | "exec-event-feature", "exec-event-feature", 0); | |
14739 | ||
de979965 PA |
14740 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14741 | "vCtrlC", "ctrl-c", 0); | |
14742 | ||
65706a29 PA |
14743 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14744 | "QThreadEvents", "thread-events", 0); | |
14745 | ||
f2faf941 PA |
14746 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14747 | "N stop reply", "no-resumed-stop-reply", 0); | |
14748 | ||
0b736949 DB |
14749 | /* Assert that we've registered "set remote foo-packet" commands |
14750 | for all packet configs. */ | |
ca4f7f8b PA |
14751 | { |
14752 | int i; | |
14753 | ||
14754 | for (i = 0; i < PACKET_MAX; i++) | |
14755 | { | |
14756 | /* Ideally all configs would have a command associated. Some | |
14757 | still don't though. */ | |
14758 | int excepted; | |
14759 | ||
14760 | switch (i) | |
14761 | { | |
14762 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14763 | case PACKET_EnableDisableTracepoints_feature: |
14764 | case PACKET_tracenz_feature: | |
14765 | case PACKET_DisconnectedTracing_feature: | |
14766 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14767 | case PACKET_qCRC: |
14768 | /* Additions to this list need to be well justified: | |
14769 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14770 | excepted = 1; |
14771 | break; | |
14772 | default: | |
14773 | excepted = 0; | |
14774 | break; | |
14775 | } | |
14776 | ||
14777 | /* This catches both forgetting to add a config command, and | |
14778 | forgetting to remove a packet from the exception list. */ | |
14779 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14780 | } | |
14781 | } | |
14782 | ||
37a105a1 DJ |
14783 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14784 | Z sub-packet has its own set and show commands, but users may | |
14785 | have sets to this variable in their .gdbinit files (or in their | |
14786 | documentation). */ | |
e9e68a56 | 14787 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c | 14788 | &remote_Z_packet_detect, _("\ |
590042fc PW |
14789 | Set use of remote protocol `Z' packets."), _("\ |
14790 | Show use of remote protocol `Z' packets."), _("\ | |
3b64bf98 | 14791 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14792 | packets."), |
e9e68a56 | 14793 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14794 | show_remote_protocol_Z_packet_cmd, |
14795 | /* FIXME: i18n: Use of remote protocol | |
14796 | `Z' packets is %s. */ | |
e9e68a56 | 14797 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14798 | |
0743fc83 | 14799 | add_basic_prefix_cmd ("remote", class_files, _("\ |
590042fc | 14800 | Manipulate files on the remote system.\n\ |
a6b151f1 | 14801 | Transfer files to and from the remote target system."), |
0743fc83 TT |
14802 | &remote_cmdlist, "remote ", |
14803 | 0 /* allow-unknown */, &cmdlist); | |
a6b151f1 DJ |
14804 | |
14805 | add_cmd ("put", class_files, remote_put_command, | |
14806 | _("Copy a local file to the remote system."), | |
14807 | &remote_cmdlist); | |
14808 | ||
14809 | add_cmd ("get", class_files, remote_get_command, | |
14810 | _("Copy a remote file to the local system."), | |
14811 | &remote_cmdlist); | |
14812 | ||
14813 | add_cmd ("delete", class_files, remote_delete_command, | |
14814 | _("Delete a remote file."), | |
14815 | &remote_cmdlist); | |
14816 | ||
2d717e4f | 14817 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14818 | &remote_exec_file_var, _("\ |
590042fc PW |
14819 | Set the remote pathname for \"run\"."), _("\ |
14820 | Show the remote pathname for \"run\"."), NULL, | |
94585166 DB |
14821 | set_remote_exec_file, |
14822 | show_remote_exec_file, | |
14823 | &remote_set_cmdlist, | |
14824 | &remote_show_cmdlist); | |
2d717e4f | 14825 | |
c1e36e3e PA |
14826 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14827 | &use_range_stepping, _("\ | |
14828 | Enable or disable range stepping."), _("\ | |
14829 | Show whether target-assisted range stepping is enabled."), _("\ | |
14830 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14831 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14832 | of issuing multiple single-steps. This speeds up source level\n\ | |
14833 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14834 | stepping is supported by the target. The default is on."), | |
14835 | set_range_stepping, | |
14836 | show_range_stepping, | |
14837 | &setlist, | |
14838 | &showlist); | |
14839 | ||
ed2b7c17 TT |
14840 | add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\ |
14841 | Set watchdog timer."), _("\ | |
14842 | Show watchdog timer."), _("\ | |
14843 | When non-zero, this timeout is used instead of waiting forever for a target\n\ | |
14844 | to finish a low-level step or continue operation. If the specified amount\n\ | |
14845 | of time passes without a response from the target, an error occurs."), | |
14846 | NULL, | |
14847 | show_watchdog, | |
14848 | &setlist, &showlist); | |
14849 | ||
6cc8564b LM |
14850 | add_setshow_zuinteger_unlimited_cmd ("remote-packet-max-chars", no_class, |
14851 | &remote_packet_max_chars, _("\ | |
14852 | Set the maximum number of characters to display for each remote packet."), _("\ | |
14853 | Show the maximum number of characters to display for each remote packet."), _("\ | |
14854 | Specify \"unlimited\" to display all the characters."), | |
14855 | NULL, show_remote_packet_max_chars, | |
14856 | &setdebuglist, &showdebuglist); | |
14857 | ||
449092f6 CV |
14858 | /* Eventually initialize fileio. See fileio.c */ |
14859 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 14860 | } |