Commit | Line | Data |
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c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
3666a048 | 3 | Copyright (C) 1988-2021 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b JM |
5 | This file is part of GDB. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b JM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c5aa993b | 19 | |
23860348 | 20 | /* See the GDB User Guide for details of the GDB remote protocol. */ |
c5aa993b | 21 | |
c906108c | 22 | #include "defs.h" |
c906108c SS |
23 | #include <ctype.h> |
24 | #include <fcntl.h> | |
c906108c | 25 | #include "inferior.h" |
45741a9c | 26 | #include "infrun.h" |
c906108c SS |
27 | #include "bfd.h" |
28 | #include "symfile.h" | |
29 | #include "target.h" | |
3b3dac9b | 30 | #include "process-stratum-target.h" |
c906108c SS |
31 | #include "gdbcmd.h" |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "gdbthread.h" | |
c2c6d25f | 35 | #include "remote.h" |
722247f1 | 36 | #include "remote-notif.h" |
4e052eda | 37 | #include "regcache.h" |
fd0407d6 | 38 | #include "value.h" |
76727919 | 39 | #include "observable.h" |
a77053c2 | 40 | #include "solib.h" |
37a105a1 DJ |
41 | #include "cli/cli-decode.h" |
42 | #include "cli/cli-setshow.h" | |
424163ea | 43 | #include "target-descriptions.h" |
a4453b7e | 44 | #include "gdb_bfd.h" |
268a13a5 TT |
45 | #include "gdbsupport/filestuff.h" |
46 | #include "gdbsupport/rsp-low.h" | |
6b940e6a | 47 | #include "disasm.h" |
f00aae0f | 48 | #include "location.h" |
c906108c | 49 | |
268a13a5 | 50 | #include "gdbsupport/gdb_sys_time.h" |
c906108c | 51 | |
400b5eca | 52 | #include "gdbsupport/event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
7e10abd1 | 59 | #include "gdbcore.h" |
6240bebf | 60 | |
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
268a13a5 | 71 | #include "gdbsupport/agent.h" |
9accd112 | 72 | #include "btrace.h" |
c0272db5 | 73 | #include "record-btrace.h" |
325fac50 | 74 | #include <algorithm> |
268a13a5 TT |
75 | #include "gdbsupport/scoped_restore.h" |
76 | #include "gdbsupport/environ.h" | |
77 | #include "gdbsupport/byte-vector.h" | |
4a72de73 | 78 | #include "gdbsupport/search.h" |
39ef2f62 | 79 | #include <algorithm> |
9d6eea31 | 80 | #include <unordered_map> |
93b54c8e | 81 | #include "async-event.h" |
35b1e5cc | 82 | |
f6ac5f3d PA |
83 | /* The remote target. */ |
84 | ||
d9f719f1 PA |
85 | static const char remote_doc[] = N_("\ |
86 | Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
87 | Specify the serial device it is connected to\n\ | |
88 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
89 | ||
6b8edb51 PA |
90 | #define OPAQUETHREADBYTES 8 |
91 | ||
92 | /* a 64 bit opaque identifier */ | |
93 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
94 | ||
95 | struct gdb_ext_thread_info; | |
96 | struct threads_listing_context; | |
97 | typedef int (*rmt_thread_action) (threadref *ref, void *context); | |
98 | struct protocol_feature; | |
99 | struct packet_reg; | |
100 | ||
101 | struct stop_reply; | |
32603266 | 102 | typedef std::unique_ptr<stop_reply> stop_reply_up; |
6b8edb51 PA |
103 | |
104 | /* Generic configuration support for packets the stub optionally | |
105 | supports. Allows the user to specify the use of the packet as well | |
106 | as allowing GDB to auto-detect support in the remote stub. */ | |
107 | ||
108 | enum packet_support | |
109 | { | |
110 | PACKET_SUPPORT_UNKNOWN = 0, | |
111 | PACKET_ENABLE, | |
112 | PACKET_DISABLE | |
113 | }; | |
114 | ||
115 | /* Analyze a packet's return value and update the packet config | |
116 | accordingly. */ | |
117 | ||
118 | enum packet_result | |
119 | { | |
120 | PACKET_ERROR, | |
121 | PACKET_OK, | |
122 | PACKET_UNKNOWN | |
123 | }; | |
124 | ||
125 | struct threads_listing_context; | |
3c69da40 PA |
126 | |
127 | /* Stub vCont actions support. | |
128 | ||
129 | Each field is a boolean flag indicating whether the stub reports | |
130 | support for the corresponding action. */ | |
131 | ||
132 | struct vCont_action_support | |
133 | { | |
134 | /* vCont;t */ | |
135 | bool t = false; | |
136 | ||
137 | /* vCont;r */ | |
138 | bool r = false; | |
139 | ||
140 | /* vCont;s */ | |
141 | bool s = false; | |
142 | ||
143 | /* vCont;S */ | |
144 | bool S = false; | |
145 | }; | |
146 | ||
405feb71 | 147 | /* About this many threadids fit in a packet. */ |
3c69da40 PA |
148 | |
149 | #define MAXTHREADLISTRESULTS 32 | |
150 | ||
151 | /* Data for the vFile:pread readahead cache. */ | |
152 | ||
153 | struct readahead_cache | |
154 | { | |
155 | /* Invalidate the readahead cache. */ | |
156 | void invalidate (); | |
157 | ||
158 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
159 | void invalidate_fd (int fd); | |
160 | ||
161 | /* Serve pread from the readahead cache. Returns number of bytes | |
162 | read, or 0 if the request can't be served from the cache. */ | |
163 | int pread (int fd, gdb_byte *read_buf, size_t len, ULONGEST offset); | |
164 | ||
165 | /* The file descriptor for the file that is being cached. -1 if the | |
166 | cache is invalid. */ | |
167 | int fd = -1; | |
168 | ||
169 | /* The offset into the file that the cache buffer corresponds | |
170 | to. */ | |
171 | ULONGEST offset = 0; | |
172 | ||
173 | /* The buffer holding the cache contents. */ | |
174 | gdb_byte *buf = nullptr; | |
175 | /* The buffer's size. We try to read as much as fits into a packet | |
176 | at a time. */ | |
177 | size_t bufsize = 0; | |
178 | ||
179 | /* Cache hit and miss counters. */ | |
180 | ULONGEST hit_count = 0; | |
181 | ULONGEST miss_count = 0; | |
182 | }; | |
183 | ||
184 | /* Description of the remote protocol for a given architecture. */ | |
185 | ||
186 | struct packet_reg | |
187 | { | |
188 | long offset; /* Offset into G packet. */ | |
189 | long regnum; /* GDB's internal register number. */ | |
190 | LONGEST pnum; /* Remote protocol register number. */ | |
191 | int in_g_packet; /* Always part of G packet. */ | |
192 | /* long size in bytes; == register_size (target_gdbarch (), regnum); | |
193 | at present. */ | |
194 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); | |
195 | at present. */ | |
196 | }; | |
197 | ||
198 | struct remote_arch_state | |
199 | { | |
200 | explicit remote_arch_state (struct gdbarch *gdbarch); | |
201 | ||
202 | /* Description of the remote protocol registers. */ | |
203 | long sizeof_g_packet; | |
204 | ||
205 | /* Description of the remote protocol registers indexed by REGNUM | |
206 | (making an array gdbarch_num_regs in size). */ | |
207 | std::unique_ptr<packet_reg[]> regs; | |
208 | ||
209 | /* This is the size (in chars) of the first response to the ``g'' | |
210 | packet. It is used as a heuristic when determining the maximum | |
211 | size of memory-read and memory-write packets. A target will | |
212 | typically only reserve a buffer large enough to hold the ``g'' | |
213 | packet. The size does not include packet overhead (headers and | |
214 | trailers). */ | |
215 | long actual_register_packet_size; | |
216 | ||
217 | /* This is the maximum size (in chars) of a non read/write packet. | |
218 | It is also used as a cap on the size of read/write packets. */ | |
219 | long remote_packet_size; | |
220 | }; | |
221 | ||
222 | /* Description of the remote protocol state for the currently | |
223 | connected target. This is per-target state, and independent of the | |
224 | selected architecture. */ | |
225 | ||
226 | class remote_state | |
227 | { | |
228 | public: | |
229 | ||
230 | remote_state (); | |
231 | ~remote_state (); | |
232 | ||
233 | /* Get the remote arch state for GDBARCH. */ | |
234 | struct remote_arch_state *get_remote_arch_state (struct gdbarch *gdbarch); | |
235 | ||
236 | public: /* data */ | |
237 | ||
238 | /* A buffer to use for incoming packets, and its current size. The | |
239 | buffer is grown dynamically for larger incoming packets. | |
240 | Outgoing packets may also be constructed in this buffer. | |
8d64371b | 241 | The size of the buffer is always at least REMOTE_PACKET_SIZE; |
3c69da40 PA |
242 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing |
243 | packets. */ | |
8d64371b | 244 | gdb::char_vector buf; |
3c69da40 PA |
245 | |
246 | /* True if we're going through initial connection setup (finding out | |
247 | about the remote side's threads, relocating symbols, etc.). */ | |
248 | bool starting_up = false; | |
249 | ||
250 | /* If we negotiated packet size explicitly (and thus can bypass | |
251 | heuristics for the largest packet size that will not overflow | |
252 | a buffer in the stub), this will be set to that packet size. | |
253 | Otherwise zero, meaning to use the guessed size. */ | |
254 | long explicit_packet_size = 0; | |
255 | ||
256 | /* remote_wait is normally called when the target is running and | |
257 | waits for a stop reply packet. But sometimes we need to call it | |
258 | when the target is already stopped. We can send a "?" packet | |
259 | and have remote_wait read the response. Or, if we already have | |
260 | the response, we can stash it in BUF and tell remote_wait to | |
261 | skip calling getpkt. This flag is set when BUF contains a | |
262 | stop reply packet and the target is not waiting. */ | |
263 | int cached_wait_status = 0; | |
264 | ||
265 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
266 | expect acks from each other. The connection is assumed to be | |
267 | reliable. */ | |
268 | bool noack_mode = false; | |
269 | ||
270 | /* True if we're connected in extended remote mode. */ | |
271 | bool extended = false; | |
272 | ||
273 | /* True if we resumed the target and we're waiting for the target to | |
274 | stop. In the mean time, we can't start another command/query. | |
275 | The remote server wouldn't be ready to process it, so we'd | |
276 | timeout waiting for a reply that would never come and eventually | |
277 | we'd close the connection. This can happen in asynchronous mode | |
278 | because we allow GDB commands while the target is running. */ | |
279 | bool waiting_for_stop_reply = false; | |
280 | ||
281 | /* The status of the stub support for the various vCont actions. */ | |
282 | vCont_action_support supports_vCont; | |
5b6d1e4f PA |
283 | /* Whether vCont support was probed already. This is a workaround |
284 | until packet_support is per-connection. */ | |
285 | bool supports_vCont_probed; | |
3c69da40 PA |
286 | |
287 | /* True if the user has pressed Ctrl-C, but the target hasn't | |
288 | responded to that. */ | |
289 | bool ctrlc_pending_p = false; | |
290 | ||
291 | /* True if we saw a Ctrl-C while reading or writing from/to the | |
292 | remote descriptor. At that point it is not safe to send a remote | |
293 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
294 | process it once we're done with sending/receiving the current | |
295 | packet, which should be shortly. If however that takes too long, | |
296 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
297 | bool got_ctrlc_during_io = false; | |
298 | ||
299 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
300 | remote_open knows that we don't have a file open when the program | |
301 | starts. */ | |
302 | struct serial *remote_desc = nullptr; | |
303 | ||
304 | /* These are the threads which we last sent to the remote system. The | |
305 | TID member will be -1 for all or -2 for not sent yet. */ | |
306 | ptid_t general_thread = null_ptid; | |
307 | ptid_t continue_thread = null_ptid; | |
308 | ||
309 | /* This is the traceframe which we last selected on the remote system. | |
310 | It will be -1 if no traceframe is selected. */ | |
311 | int remote_traceframe_number = -1; | |
312 | ||
313 | char *last_pass_packet = nullptr; | |
314 | ||
315 | /* The last QProgramSignals packet sent to the target. We bypass | |
316 | sending a new program signals list down to the target if the new | |
317 | packet is exactly the same as the last we sent. IOW, we only let | |
318 | the target know about program signals list changes. */ | |
319 | char *last_program_signals_packet = nullptr; | |
320 | ||
321 | gdb_signal last_sent_signal = GDB_SIGNAL_0; | |
322 | ||
323 | bool last_sent_step = false; | |
324 | ||
325 | /* The execution direction of the last resume we got. */ | |
326 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; | |
327 | ||
328 | char *finished_object = nullptr; | |
329 | char *finished_annex = nullptr; | |
330 | ULONGEST finished_offset = 0; | |
331 | ||
332 | /* Should we try the 'ThreadInfo' query packet? | |
333 | ||
334 | This variable (NOT available to the user: auto-detect only!) | |
335 | determines whether GDB will use the new, simpler "ThreadInfo" | |
336 | query or the older, more complex syntax for thread queries. | |
337 | This is an auto-detect variable (set to true at each connect, | |
338 | and set to false when the target fails to recognize it). */ | |
339 | bool use_threadinfo_query = false; | |
340 | bool use_threadextra_query = false; | |
341 | ||
342 | threadref echo_nextthread {}; | |
343 | threadref nextthread {}; | |
344 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
345 | ||
346 | /* The state of remote notification. */ | |
347 | struct remote_notif_state *notif_state = nullptr; | |
348 | ||
349 | /* The branch trace configuration. */ | |
350 | struct btrace_config btrace_config {}; | |
351 | ||
352 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
353 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
354 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
355 | has yet been sent. */ | |
356 | int fs_pid = -1; | |
357 | ||
358 | /* A readahead cache for vFile:pread. Often, reading a binary | |
359 | involves a sequence of small reads. E.g., when parsing an ELF | |
360 | file. A readahead cache helps mostly the case of remote | |
361 | debugging on a connection with higher latency, due to the | |
362 | request/reply nature of the RSP. We only cache data for a single | |
363 | file descriptor at a time. */ | |
364 | struct readahead_cache readahead_cache; | |
365 | ||
366 | /* The list of already fetched and acknowledged stop events. This | |
367 | queue is used for notification Stop, and other notifications | |
368 | don't need queue for their events, because the notification | |
369 | events of Stop can't be consumed immediately, so that events | |
370 | should be queued first, and be consumed by remote_wait_{ns,as} | |
371 | one per time. Other notifications can consume their events | |
372 | immediately, so queue is not needed for them. */ | |
953edf2b | 373 | std::vector<stop_reply_up> stop_reply_queue; |
3c69da40 PA |
374 | |
375 | /* Asynchronous signal handle registered as event loop source for | |
376 | when we have pending events ready to be passed to the core. */ | |
377 | struct async_event_handler *remote_async_inferior_event_token = nullptr; | |
378 | ||
379 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with | |
380 | ``forever'' still use the normal timeout mechanism. This is | |
381 | currently used by the ASYNC code to guarentee that target reads | |
382 | during the initial connect always time-out. Once getpkt has been | |
383 | modified to return a timeout indication and, in turn | |
384 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
385 | this can go away. */ | |
386 | int wait_forever_enabled_p = 1; | |
387 | ||
388 | private: | |
389 | /* Mapping of remote protocol data for each gdbarch. Usually there | |
390 | is only one entry here, though we may see more with stubs that | |
391 | support multi-process. */ | |
392 | std::unordered_map<struct gdbarch *, remote_arch_state> | |
393 | m_arch_states; | |
394 | }; | |
6b8edb51 | 395 | |
d9f719f1 PA |
396 | static const target_info remote_target_info = { |
397 | "remote", | |
398 | N_("Remote serial target in gdb-specific protocol"), | |
399 | remote_doc | |
400 | }; | |
401 | ||
3b3dac9b | 402 | class remote_target : public process_stratum_target |
f6ac5f3d PA |
403 | { |
404 | public: | |
3b3dac9b | 405 | remote_target () = default; |
6b8edb51 | 406 | ~remote_target () override; |
f6ac5f3d | 407 | |
d9f719f1 PA |
408 | const target_info &info () const override |
409 | { return remote_target_info; } | |
f6ac5f3d | 410 | |
121b3efd PA |
411 | const char *connection_string () override; |
412 | ||
f6ac5f3d PA |
413 | thread_control_capabilities get_thread_control_capabilities () override |
414 | { return tc_schedlock; } | |
415 | ||
d9f719f1 PA |
416 | /* Open a remote connection. */ |
417 | static void open (const char *, int); | |
418 | ||
f6ac5f3d PA |
419 | void close () override; |
420 | ||
421 | void detach (inferior *, int) override; | |
422 | void disconnect (const char *, int) override; | |
423 | ||
424 | void commit_resume () override; | |
425 | void resume (ptid_t, int, enum gdb_signal) override; | |
b60cea74 | 426 | ptid_t wait (ptid_t, struct target_waitstatus *, target_wait_flags) override; |
f6ac5f3d PA |
427 | |
428 | void fetch_registers (struct regcache *, int) override; | |
429 | void store_registers (struct regcache *, int) override; | |
430 | void prepare_to_store (struct regcache *) override; | |
431 | ||
432 | void files_info () override; | |
433 | ||
434 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
435 | ||
436 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
437 | enum remove_bp_reason) override; | |
438 | ||
439 | ||
57810aa7 PA |
440 | bool stopped_by_sw_breakpoint () override; |
441 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 442 | |
57810aa7 | 443 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 444 | |
57810aa7 | 445 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 446 | |
57810aa7 | 447 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 448 | |
57810aa7 | 449 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 450 | |
57810aa7 | 451 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
452 | |
453 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
454 | ||
455 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
456 | ||
457 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
458 | ||
459 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
460 | ||
461 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
462 | struct expression *) override; | |
463 | ||
464 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
465 | struct expression *) override; | |
466 | ||
467 | void kill () override; | |
468 | ||
469 | void load (const char *, int) override; | |
470 | ||
471 | void mourn_inferior () override; | |
472 | ||
adc6a863 | 473 | void pass_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d PA |
474 | |
475 | int set_syscall_catchpoint (int, bool, int, | |
476 | gdb::array_view<const int>) override; | |
477 | ||
adc6a863 | 478 | void program_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d | 479 | |
57810aa7 | 480 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
481 | |
482 | const char *thread_name (struct thread_info *) override; | |
483 | ||
484 | void update_thread_list () override; | |
485 | ||
a068643d | 486 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
487 | |
488 | const char *extra_thread_info (struct thread_info *) override; | |
489 | ||
490 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
491 | ||
492 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
493 | int handle_len, | |
494 | inferior *inf) override; | |
495 | ||
3d6c6204 KB |
496 | gdb::byte_vector thread_info_to_thread_handle (struct thread_info *tp) |
497 | override; | |
498 | ||
f6ac5f3d PA |
499 | void stop (ptid_t) override; |
500 | ||
501 | void interrupt () override; | |
502 | ||
503 | void pass_ctrlc () override; | |
504 | ||
505 | enum target_xfer_status xfer_partial (enum target_object object, | |
506 | const char *annex, | |
507 | gdb_byte *readbuf, | |
508 | const gdb_byte *writebuf, | |
509 | ULONGEST offset, ULONGEST len, | |
510 | ULONGEST *xfered_len) override; | |
511 | ||
512 | ULONGEST get_memory_xfer_limit () override; | |
513 | ||
514 | void rcmd (const char *command, struct ui_file *output) override; | |
515 | ||
516 | char *pid_to_exec_file (int pid) override; | |
517 | ||
518 | void log_command (const char *cmd) override | |
519 | { | |
520 | serial_log_command (this, cmd); | |
521 | } | |
522 | ||
523 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
524 | CORE_ADDR load_module_addr, | |
525 | CORE_ADDR offset) override; | |
526 | ||
57810aa7 | 527 | bool can_execute_reverse () override; |
f6ac5f3d PA |
528 | |
529 | std::vector<mem_region> memory_map () override; | |
530 | ||
531 | void flash_erase (ULONGEST address, LONGEST length) override; | |
532 | ||
533 | void flash_done () override; | |
534 | ||
535 | const struct target_desc *read_description () override; | |
536 | ||
537 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
538 | const gdb_byte *pattern, ULONGEST pattern_len, | |
539 | CORE_ADDR *found_addrp) override; | |
540 | ||
57810aa7 | 541 | bool can_async_p () override; |
f6ac5f3d | 542 | |
57810aa7 | 543 | bool is_async_p () override; |
f6ac5f3d PA |
544 | |
545 | void async (int) override; | |
546 | ||
5b6d1e4f PA |
547 | int async_wait_fd () override; |
548 | ||
f6ac5f3d PA |
549 | void thread_events (int) override; |
550 | ||
551 | int can_do_single_step () override; | |
552 | ||
553 | void terminal_inferior () override; | |
554 | ||
555 | void terminal_ours () override; | |
556 | ||
57810aa7 | 557 | bool supports_non_stop () override; |
f6ac5f3d | 558 | |
57810aa7 | 559 | bool supports_multi_process () override; |
f6ac5f3d | 560 | |
57810aa7 | 561 | bool supports_disable_randomization () override; |
f6ac5f3d | 562 | |
57810aa7 | 563 | bool filesystem_is_local () override; |
f6ac5f3d PA |
564 | |
565 | ||
566 | int fileio_open (struct inferior *inf, const char *filename, | |
567 | int flags, int mode, int warn_if_slow, | |
568 | int *target_errno) override; | |
569 | ||
570 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
571 | ULONGEST offset, int *target_errno) override; | |
572 | ||
573 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
574 | ULONGEST offset, int *target_errno) override; | |
575 | ||
576 | int fileio_fstat (int fd, struct stat *sb, int *target_errno) override; | |
577 | ||
578 | int fileio_close (int fd, int *target_errno) override; | |
579 | ||
580 | int fileio_unlink (struct inferior *inf, | |
581 | const char *filename, | |
582 | int *target_errno) override; | |
583 | ||
584 | gdb::optional<std::string> | |
585 | fileio_readlink (struct inferior *inf, | |
586 | const char *filename, | |
587 | int *target_errno) override; | |
588 | ||
57810aa7 | 589 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 590 | |
57810aa7 | 591 | bool supports_string_tracing () override; |
f6ac5f3d | 592 | |
57810aa7 | 593 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 594 | |
57810aa7 | 595 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
596 | |
597 | void trace_init () override; | |
598 | ||
599 | void download_tracepoint (struct bp_location *location) override; | |
600 | ||
57810aa7 | 601 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
602 | |
603 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
604 | ||
605 | void enable_tracepoint (struct bp_location *location) override; | |
606 | ||
607 | void disable_tracepoint (struct bp_location *location) override; | |
608 | ||
609 | void trace_set_readonly_regions () override; | |
610 | ||
611 | void trace_start () override; | |
612 | ||
613 | int get_trace_status (struct trace_status *ts) override; | |
614 | ||
615 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
616 | override; | |
617 | ||
618 | void trace_stop () override; | |
619 | ||
620 | int trace_find (enum trace_find_type type, int num, | |
621 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
622 | ||
57810aa7 | 623 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
624 | |
625 | int save_trace_data (const char *filename) override; | |
626 | ||
627 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
628 | ||
629 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
630 | ||
631 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
632 | ||
633 | int get_min_fast_tracepoint_insn_len () override; | |
634 | ||
635 | void set_disconnected_tracing (int val) override; | |
636 | ||
637 | void set_circular_trace_buffer (int val) override; | |
638 | ||
639 | void set_trace_buffer_size (LONGEST val) override; | |
640 | ||
57810aa7 PA |
641 | bool set_trace_notes (const char *user, const char *notes, |
642 | const char *stopnotes) override; | |
f6ac5f3d PA |
643 | |
644 | int core_of_thread (ptid_t ptid) override; | |
645 | ||
646 | int verify_memory (const gdb_byte *data, | |
647 | CORE_ADDR memaddr, ULONGEST size) override; | |
648 | ||
649 | ||
57810aa7 | 650 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
651 | |
652 | void set_permissions () override; | |
653 | ||
654 | bool static_tracepoint_marker_at (CORE_ADDR, | |
655 | struct static_tracepoint_marker *marker) | |
656 | override; | |
657 | ||
658 | std::vector<static_tracepoint_marker> | |
659 | static_tracepoint_markers_by_strid (const char *id) override; | |
660 | ||
661 | traceframe_info_up traceframe_info () override; | |
662 | ||
57810aa7 PA |
663 | bool use_agent (bool use) override; |
664 | bool can_use_agent () override; | |
f6ac5f3d PA |
665 | |
666 | struct btrace_target_info *enable_btrace (ptid_t ptid, | |
667 | const struct btrace_config *conf) override; | |
668 | ||
669 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
670 | ||
671 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
672 | ||
673 | enum btrace_error read_btrace (struct btrace_data *data, | |
674 | struct btrace_target_info *btinfo, | |
675 | enum btrace_read_type type) override; | |
676 | ||
677 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 678 | bool augmented_libraries_svr4_read () override; |
5ab2fbf1 | 679 | bool follow_fork (bool, bool) override; |
4ca51187 | 680 | void follow_exec (struct inferior *, const char *) override; |
f6ac5f3d PA |
681 | int insert_fork_catchpoint (int) override; |
682 | int remove_fork_catchpoint (int) override; | |
683 | int insert_vfork_catchpoint (int) override; | |
684 | int remove_vfork_catchpoint (int) override; | |
685 | int insert_exec_catchpoint (int) override; | |
686 | int remove_exec_catchpoint (int) override; | |
687 | enum exec_direction_kind execution_direction () override; | |
688 | ||
6b8edb51 PA |
689 | public: /* Remote specific methods. */ |
690 | ||
691 | void remote_download_command_source (int num, ULONGEST addr, | |
692 | struct command_line *cmds); | |
693 | ||
694 | void remote_file_put (const char *local_file, const char *remote_file, | |
695 | int from_tty); | |
696 | void remote_file_get (const char *remote_file, const char *local_file, | |
697 | int from_tty); | |
698 | void remote_file_delete (const char *remote_file, int from_tty); | |
699 | ||
700 | int remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
701 | ULONGEST offset, int *remote_errno); | |
702 | int remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
703 | ULONGEST offset, int *remote_errno); | |
704 | int remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
705 | ULONGEST offset, int *remote_errno); | |
706 | ||
707 | int remote_hostio_send_command (int command_bytes, int which_packet, | |
708 | int *remote_errno, char **attachment, | |
709 | int *attachment_len); | |
710 | int remote_hostio_set_filesystem (struct inferior *inf, | |
711 | int *remote_errno); | |
712 | /* We should get rid of this and use fileio_open directly. */ | |
713 | int remote_hostio_open (struct inferior *inf, const char *filename, | |
714 | int flags, int mode, int warn_if_slow, | |
715 | int *remote_errno); | |
716 | int remote_hostio_close (int fd, int *remote_errno); | |
717 | ||
718 | int remote_hostio_unlink (inferior *inf, const char *filename, | |
719 | int *remote_errno); | |
720 | ||
721 | struct remote_state *get_remote_state (); | |
722 | ||
723 | long get_remote_packet_size (void); | |
724 | long get_memory_packet_size (struct memory_packet_config *config); | |
725 | ||
726 | long get_memory_write_packet_size (); | |
727 | long get_memory_read_packet_size (); | |
728 | ||
729 | char *append_pending_thread_resumptions (char *p, char *endp, | |
730 | ptid_t ptid); | |
d9f719f1 | 731 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d | 732 | void start_remote (int from_tty, int extended_p); |
00431a78 | 733 | void remote_detach_1 (struct inferior *inf, int from_tty); |
6b8edb51 PA |
734 | |
735 | char *append_resumption (char *p, char *endp, | |
736 | ptid_t ptid, int step, gdb_signal siggnal); | |
737 | int remote_resume_with_vcont (ptid_t ptid, int step, | |
738 | gdb_signal siggnal); | |
739 | ||
e3b2741b | 740 | void add_current_inferior_and_thread (const char *wait_status); |
6b8edb51 PA |
741 | |
742 | ptid_t wait_ns (ptid_t ptid, struct target_waitstatus *status, | |
b60cea74 | 743 | target_wait_flags options); |
6b8edb51 | 744 | ptid_t wait_as (ptid_t ptid, target_waitstatus *status, |
b60cea74 | 745 | target_wait_flags options); |
6b8edb51 PA |
746 | |
747 | ptid_t process_stop_reply (struct stop_reply *stop_reply, | |
748 | target_waitstatus *status); | |
749 | ||
8f66807b AB |
750 | ptid_t select_thread_for_ambiguous_stop_reply |
751 | (const struct target_waitstatus *status); | |
752 | ||
6b8edb51 PA |
753 | void remote_notice_new_inferior (ptid_t currthread, int executing); |
754 | ||
755 | void process_initial_stop_replies (int from_tty); | |
756 | ||
00431a78 | 757 | thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing); |
6b8edb51 PA |
758 | |
759 | void btrace_sync_conf (const btrace_config *conf); | |
760 | ||
761 | void remote_btrace_maybe_reopen (); | |
762 | ||
763 | void remove_new_fork_children (threads_listing_context *context); | |
764 | void kill_new_fork_children (int pid); | |
765 | void discard_pending_stop_replies (struct inferior *inf); | |
766 | int stop_reply_queue_length (); | |
767 | ||
768 | void check_pending_events_prevent_wildcard_vcont | |
769 | (int *may_global_wildcard_vcont); | |
770 | ||
771 | void discard_pending_stop_replies_in_queue (); | |
772 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
773 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
774 | int peek_stop_reply (ptid_t ptid); | |
bb277751 | 775 | void remote_parse_stop_reply (const char *buf, stop_reply *event); |
6b8edb51 PA |
776 | |
777 | void remote_stop_ns (ptid_t ptid); | |
778 | void remote_interrupt_as (); | |
779 | void remote_interrupt_ns (); | |
780 | ||
781 | char *remote_get_noisy_reply (); | |
782 | int remote_query_attached (int pid); | |
9ab8741a | 783 | inferior *remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 PA |
784 | int try_open_exec); |
785 | ||
786 | ptid_t remote_current_thread (ptid_t oldpid); | |
e3b2741b | 787 | ptid_t get_current_thread (const char *wait_status); |
6b8edb51 PA |
788 | |
789 | void set_thread (ptid_t ptid, int gen); | |
790 | void set_general_thread (ptid_t ptid); | |
791 | void set_continue_thread (ptid_t ptid); | |
792 | void set_general_process (); | |
793 | ||
794 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
795 | ||
cecb1912 | 796 | int remote_unpack_thread_info_response (const char *pkt, threadref *expectedref, |
6b8edb51 PA |
797 | gdb_ext_thread_info *info); |
798 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
799 | gdb_ext_thread_info *info); | |
800 | ||
cecb1912 | 801 | int parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
802 | threadref *original_echo, |
803 | threadref *resultlist, | |
804 | int *doneflag); | |
805 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
806 | int result_limit, int *done, int *result_count, | |
807 | threadref *threadlist); | |
808 | ||
809 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
810 | void *context, int looplimit); | |
811 | ||
812 | int remote_get_threads_with_ql (threads_listing_context *context); | |
813 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
814 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
815 | ||
816 | void extended_remote_restart (); | |
817 | ||
818 | void get_offsets (); | |
819 | ||
820 | void remote_check_symbols (); | |
821 | ||
822 | void remote_supported_packet (const struct protocol_feature *feature, | |
823 | enum packet_support support, | |
824 | const char *argument); | |
825 | ||
826 | void remote_query_supported (); | |
827 | ||
828 | void remote_packet_size (const protocol_feature *feature, | |
829 | packet_support support, const char *value); | |
830 | ||
831 | void remote_serial_quit_handler (); | |
832 | ||
833 | void remote_detach_pid (int pid); | |
834 | ||
835 | void remote_vcont_probe (); | |
836 | ||
837 | void remote_resume_with_hc (ptid_t ptid, int step, | |
838 | gdb_signal siggnal); | |
839 | ||
840 | void send_interrupt_sequence (); | |
841 | void interrupt_query (); | |
842 | ||
843 | void remote_notif_get_pending_events (notif_client *nc); | |
844 | ||
845 | int fetch_register_using_p (struct regcache *regcache, | |
846 | packet_reg *reg); | |
847 | int send_g_packet (); | |
848 | void process_g_packet (struct regcache *regcache); | |
849 | void fetch_registers_using_g (struct regcache *regcache); | |
850 | int store_register_using_P (const struct regcache *regcache, | |
851 | packet_reg *reg); | |
852 | void store_registers_using_G (const struct regcache *regcache); | |
853 | ||
854 | void set_remote_traceframe (); | |
855 | ||
856 | void check_binary_download (CORE_ADDR addr); | |
857 | ||
858 | target_xfer_status remote_write_bytes_aux (const char *header, | |
859 | CORE_ADDR memaddr, | |
860 | const gdb_byte *myaddr, | |
861 | ULONGEST len_units, | |
862 | int unit_size, | |
863 | ULONGEST *xfered_len_units, | |
864 | char packet_format, | |
865 | int use_length); | |
866 | ||
867 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
868 | const gdb_byte *myaddr, ULONGEST len, | |
869 | int unit_size, ULONGEST *xfered_len); | |
870 | ||
871 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
872 | ULONGEST len_units, | |
873 | int unit_size, ULONGEST *xfered_len_units); | |
874 | ||
875 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
876 | ULONGEST memaddr, | |
877 | ULONGEST len, | |
878 | int unit_size, | |
879 | ULONGEST *xfered_len); | |
880 | ||
881 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
882 | gdb_byte *myaddr, ULONGEST len, | |
883 | int unit_size, | |
884 | ULONGEST *xfered_len); | |
885 | ||
886 | packet_result remote_send_printf (const char *format, ...) | |
887 | ATTRIBUTE_PRINTF (2, 3); | |
888 | ||
889 | target_xfer_status remote_flash_write (ULONGEST address, | |
890 | ULONGEST length, ULONGEST *xfered_len, | |
891 | const gdb_byte *data); | |
892 | ||
893 | int readchar (int timeout); | |
894 | ||
895 | void remote_serial_write (const char *str, int len); | |
896 | ||
897 | int putpkt (const char *buf); | |
898 | int putpkt_binary (const char *buf, int cnt); | |
899 | ||
8d64371b TT |
900 | int putpkt (const gdb::char_vector &buf) |
901 | { | |
902 | return putpkt (buf.data ()); | |
903 | } | |
904 | ||
6b8edb51 | 905 | void skip_frame (); |
8d64371b TT |
906 | long read_frame (gdb::char_vector *buf_p); |
907 | void getpkt (gdb::char_vector *buf, int forever); | |
908 | int getpkt_or_notif_sane_1 (gdb::char_vector *buf, int forever, | |
6b8edb51 | 909 | int expecting_notif, int *is_notif); |
8d64371b TT |
910 | int getpkt_sane (gdb::char_vector *buf, int forever); |
911 | int getpkt_or_notif_sane (gdb::char_vector *buf, int forever, | |
6b8edb51 PA |
912 | int *is_notif); |
913 | int remote_vkill (int pid); | |
914 | void remote_kill_k (); | |
915 | ||
916 | void extended_remote_disable_randomization (int val); | |
917 | int extended_remote_run (const std::string &args); | |
918 | ||
919 | void send_environment_packet (const char *action, | |
920 | const char *packet, | |
921 | const char *value); | |
922 | ||
923 | void extended_remote_environment_support (); | |
3c69da40 | 924 | void extended_remote_set_inferior_cwd (); |
80152258 | 925 | |
3c69da40 PA |
926 | target_xfer_status remote_write_qxfer (const char *object_name, |
927 | const char *annex, | |
928 | const gdb_byte *writebuf, | |
929 | ULONGEST offset, LONGEST len, | |
930 | ULONGEST *xfered_len, | |
931 | struct packet_config *packet); | |
43c3a0e4 | 932 | |
3c69da40 PA |
933 | target_xfer_status remote_read_qxfer (const char *object_name, |
934 | const char *annex, | |
935 | gdb_byte *readbuf, ULONGEST offset, | |
936 | LONGEST len, | |
937 | ULONGEST *xfered_len, | |
938 | struct packet_config *packet); | |
43c3a0e4 | 939 | |
3c69da40 | 940 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 941 | |
3c69da40 | 942 | bool vcont_r_supported (); |
43c3a0e4 | 943 | |
3c69da40 | 944 | void packet_command (const char *args, int from_tty); |
43c3a0e4 | 945 | |
3c69da40 | 946 | private: /* data fields */ |
43c3a0e4 | 947 | |
3c69da40 PA |
948 | /* The remote state. Don't reference this directly. Use the |
949 | get_remote_state method instead. */ | |
950 | remote_state m_remote_state; | |
43c3a0e4 PA |
951 | }; |
952 | ||
3c69da40 PA |
953 | static const target_info extended_remote_target_info = { |
954 | "extended-remote", | |
955 | N_("Extended remote serial target in gdb-specific protocol"), | |
956 | remote_doc | |
957 | }; | |
ea9c271d | 958 | |
3c69da40 PA |
959 | /* Set up the extended remote target by extending the standard remote |
960 | target and adding to it. */ | |
961 | ||
962 | class extended_remote_target final : public remote_target | |
ea9c271d | 963 | { |
9d6eea31 | 964 | public: |
3c69da40 PA |
965 | const target_info &info () const override |
966 | { return extended_remote_target_info; } | |
9d6eea31 | 967 | |
3c69da40 PA |
968 | /* Open an extended-remote connection. */ |
969 | static void open (const char *, int); | |
de44f5a7 | 970 | |
3c69da40 PA |
971 | bool can_create_inferior () override { return true; } |
972 | void create_inferior (const char *, const std::string &, | |
973 | char **, int) override; | |
9d6eea31 | 974 | |
3c69da40 | 975 | void detach (inferior *, int) override; |
9d6eea31 | 976 | |
3c69da40 PA |
977 | bool can_attach () override { return true; } |
978 | void attach (const char *, int) override; | |
be2a5f71 | 979 | |
3c69da40 PA |
980 | void post_attach (int) override; |
981 | bool supports_disable_randomization () override; | |
982 | }; | |
1e51243a | 983 | |
3c69da40 | 984 | /* Per-program-space data key. */ |
7b4a314f TT |
985 | static const struct program_space_key<char, gdb::xfree_deleter<char>> |
986 | remote_pspace_data; | |
2d717e4f | 987 | |
3c69da40 PA |
988 | /* The variable registered as the control variable used by the |
989 | remote exec-file commands. While the remote exec-file setting is | |
990 | per-program-space, the set/show machinery uses this as the | |
991 | location of the remote exec-file value. */ | |
992 | static char *remote_exec_file_var; | |
a6f3e723 | 993 | |
3c69da40 PA |
994 | /* The size to align memory write packets, when practical. The protocol |
995 | does not guarantee any alignment, and gdb will generate short | |
996 | writes and unaligned writes, but even as a best-effort attempt this | |
997 | can improve bulk transfers. For instance, if a write is misaligned | |
998 | relative to the target's data bus, the stub may need to make an extra | |
999 | round trip fetching data from the target. This doesn't make a | |
1000 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 1001 | |
3c69da40 PA |
1002 | The alignment chosen is arbitrary; usually data bus width is |
1003 | important here, not the possibly larger cache line size. */ | |
1004 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 1005 | |
3c69da40 | 1006 | /* Prototypes for local functions. */ |
74531fed | 1007 | |
3c69da40 | 1008 | static int hexnumlen (ULONGEST num); |
782b2b07 | 1009 | |
3c69da40 | 1010 | static int stubhex (int ch); |
5d93a237 | 1011 | |
3c69da40 | 1012 | static int hexnumstr (char *, ULONGEST); |
048094ac | 1013 | |
3c69da40 | 1014 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 1015 | |
3c69da40 | 1016 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1017 | |
3c69da40 | 1018 | static void print_packet (const char *); |
747dc59d | 1019 | |
cecb1912 | 1020 | static int stub_unpack_int (const char *buff, int fieldlength); |
5e4a05c4 | 1021 | |
3c69da40 | 1022 | struct packet_config; |
b73be471 | 1023 | |
3c69da40 | 1024 | static void show_packet_config_cmd (struct packet_config *config); |
280ceea3 | 1025 | |
3c69da40 PA |
1026 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1027 | int from_tty, | |
1028 | struct cmd_list_element *c, | |
1029 | const char *value); | |
8e88304f | 1030 | |
3c69da40 | 1031 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1032 | |
3c69da40 | 1033 | static void remote_async_inferior_event_handler (gdb_client_data); |
b80fafe3 | 1034 | |
eefce37f | 1035 | static bool remote_read_description_p (struct target_ops *target); |
88b496c3 | 1036 | |
05be00a8 | 1037 | static void remote_console_output (const char *msg); |
5965e028 | 1038 | |
3c69da40 | 1039 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1040 | |
5b6d1e4f | 1041 | static void remote_unpush_and_throw (remote_target *target); |
15a201c8 | 1042 | |
3c69da40 | 1043 | /* For "remote". */ |
80152258 | 1044 | |
3c69da40 | 1045 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1046 | |
3c69da40 | 1047 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1048 | |
3c69da40 PA |
1049 | static struct cmd_list_element *remote_set_cmdlist; |
1050 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1051 | |
3c69da40 | 1052 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1053 | |
491144b5 | 1054 | static bool use_range_stepping = true; |
3c69da40 | 1055 | |
c9d22089 SM |
1056 | /* From the remote target's point of view, each thread is in one of these three |
1057 | states. */ | |
1058 | enum class resume_state | |
1059 | { | |
1060 | /* Not resumed - we haven't been asked to resume this thread. */ | |
1061 | NOT_RESUMED, | |
1062 | ||
1063 | /* We have been asked to resume this thread, but haven't sent a vCont action | |
1064 | for it yet. We'll need to consider it next time commit_resume is | |
1065 | called. */ | |
1066 | RESUMED_PENDING_VCONT, | |
1067 | ||
1068 | /* We have been asked to resume this thread, and we have sent a vCont action | |
1069 | for it. */ | |
1070 | RESUMED, | |
1071 | }; | |
1072 | ||
1073 | /* Information about a thread's pending vCont-resume. Used when a thread is in | |
1074 | the remote_resume_state::RESUMED_PENDING_VCONT state. remote_target::resume | |
1075 | stores this information which is then picked up by | |
1076 | remote_target::commit_resume to know which is the proper action for this | |
1077 | thread to include in the vCont packet. */ | |
1078 | struct resumed_pending_vcont_info | |
1079 | { | |
1080 | /* True if the last resume call for this thread was a step request, false | |
1081 | if a continue request. */ | |
1082 | bool step; | |
1083 | ||
1084 | /* The signal specified in the last resume call for this thread. */ | |
1085 | gdb_signal sig; | |
1086 | }; | |
1087 | ||
7aabaf9d SM |
1088 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1089 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1090 | { |
7aabaf9d SM |
1091 | std::string extra; |
1092 | std::string name; | |
1093 | int core = -1; | |
799a2abe | 1094 | |
f6327dcb KB |
1095 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1096 | sequence of bytes. */ | |
7aabaf9d | 1097 | gdb::byte_vector thread_handle; |
f6327dcb | 1098 | |
799a2abe | 1099 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1100 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1101 | |
1102 | /* This is set to the data address of the access causing the target | |
1103 | to stop for a watchpoint. */ | |
7aabaf9d | 1104 | CORE_ADDR watch_data_address = 0; |
85ad3aaf | 1105 | |
c9d22089 SM |
1106 | /* Get the thread's resume state. */ |
1107 | enum resume_state resume_state () const | |
1108 | { | |
1109 | return m_resume_state; | |
1110 | } | |
1111 | ||
1112 | /* Put the thread in the NOT_RESUMED state. */ | |
1113 | void set_not_resumed () | |
1114 | { | |
1115 | m_resume_state = resume_state::NOT_RESUMED; | |
1116 | } | |
85ad3aaf | 1117 | |
c9d22089 SM |
1118 | /* Put the thread in the RESUMED_PENDING_VCONT state. */ |
1119 | void set_resumed_pending_vcont (bool step, gdb_signal sig) | |
1120 | { | |
1121 | m_resume_state = resume_state::RESUMED_PENDING_VCONT; | |
1122 | m_resumed_pending_vcont_info.step = step; | |
1123 | m_resumed_pending_vcont_info.sig = sig; | |
1124 | } | |
85ad3aaf | 1125 | |
c9d22089 | 1126 | /* Get the information this thread's pending vCont-resumption. |
85ad3aaf | 1127 | |
c9d22089 SM |
1128 | Must only be called if the thread is in the RESUMED_PENDING_VCONT resume |
1129 | state. */ | |
1130 | const struct resumed_pending_vcont_info &resumed_pending_vcont_info () const | |
1131 | { | |
1132 | gdb_assert (m_resume_state == resume_state::RESUMED_PENDING_VCONT); | |
1133 | ||
1134 | return m_resumed_pending_vcont_info; | |
1135 | } | |
1136 | ||
1137 | /* Put the thread in the VCONT_RESUMED state. */ | |
1138 | void set_resumed () | |
1139 | { | |
1140 | m_resume_state = resume_state::RESUMED; | |
1141 | } | |
1142 | ||
1143 | private: | |
1144 | /* Resume state for this thread. This is used to implement vCont action | |
1145 | coalescing (only when the target operates in non-stop mode). | |
1146 | ||
1147 | remote_target::resume moves the thread to the RESUMED_PENDING_VCONT state, | |
1148 | which notes that this thread must be considered in the next commit_resume | |
1149 | call. | |
1150 | ||
1151 | remote_target::commit_resume sends a vCont packet with actions for the | |
1152 | threads in the RESUMED_PENDING_VCONT state and moves them to the | |
1153 | VCONT_RESUMED state. | |
1154 | ||
1155 | When reporting a stop to the core for a thread, that thread is moved back | |
1156 | to the NOT_RESUMED state. */ | |
1157 | enum resume_state m_resume_state = resume_state::NOT_RESUMED; | |
1158 | ||
1159 | /* Extra info used if the thread is in the RESUMED_PENDING_VCONT state. */ | |
1160 | struct resumed_pending_vcont_info m_resumed_pending_vcont_info; | |
dc146f7c VP |
1161 | }; |
1162 | ||
de44f5a7 | 1163 | remote_state::remote_state () |
8d64371b | 1164 | : buf (400) |
de44f5a7 | 1165 | { |
de44f5a7 PA |
1166 | } |
1167 | ||
1168 | remote_state::~remote_state () | |
1169 | { | |
1170 | xfree (this->last_pass_packet); | |
1171 | xfree (this->last_program_signals_packet); | |
de44f5a7 PA |
1172 | xfree (this->finished_object); |
1173 | xfree (this->finished_annex); | |
cf792862 TT |
1174 | } |
1175 | ||
35b1e5cc SS |
1176 | /* Utility: generate error from an incoming stub packet. */ |
1177 | static void | |
1178 | trace_error (char *buf) | |
1179 | { | |
1180 | if (*buf++ != 'E') | |
1181 | return; /* not an error msg */ | |
1182 | switch (*buf) | |
1183 | { | |
1184 | case '1': /* malformed packet error */ | |
1185 | if (*++buf == '0') /* general case: */ | |
1186 | error (_("remote.c: error in outgoing packet.")); | |
1187 | else | |
1188 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1189 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1190 | default: |
1191 | error (_("Target returns error code '%s'."), buf); | |
1192 | } | |
1193 | } | |
1194 | ||
1195 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1196 | |
6b8edb51 PA |
1197 | char * |
1198 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1199 | { |
b6bb3468 PA |
1200 | struct remote_state *rs = get_remote_state (); |
1201 | ||
35b1e5cc SS |
1202 | do /* Loop on reply from remote stub. */ |
1203 | { | |
1204 | char *buf; | |
a744cf53 | 1205 | |
0df8b418 | 1206 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b TT |
1207 | getpkt (&rs->buf, 0); |
1208 | buf = rs->buf.data (); | |
ad91cd99 | 1209 | if (buf[0] == 'E') |
35b1e5cc | 1210 | trace_error (buf); |
61012eef | 1211 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1212 | { |
1213 | ULONGEST ul; | |
1214 | CORE_ADDR from, to, org_to; | |
256642e8 | 1215 | const char *p, *pp; |
dde08ee1 | 1216 | int adjusted_size = 0; |
7556d4a4 | 1217 | int relocated = 0; |
dde08ee1 PA |
1218 | |
1219 | p = buf + strlen ("qRelocInsn:"); | |
1220 | pp = unpack_varlen_hex (p, &ul); | |
1221 | if (*pp != ';') | |
cb91c06a | 1222 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1223 | from = ul; |
1224 | ||
1225 | p = pp + 1; | |
a9cbf802 | 1226 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1227 | to = ul; |
1228 | ||
1229 | org_to = to; | |
1230 | ||
a70b8144 | 1231 | try |
dde08ee1 | 1232 | { |
f5656ead | 1233 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 1234 | relocated = 1; |
dde08ee1 | 1235 | } |
230d2906 | 1236 | catch (const gdb_exception &ex) |
7556d4a4 PA |
1237 | { |
1238 | if (ex.error == MEMORY_ERROR) | |
1239 | { | |
1240 | /* Propagate memory errors silently back to the | |
1241 | target. The stub may have limited the range of | |
1242 | addresses we can write to, for example. */ | |
1243 | } | |
1244 | else | |
1245 | { | |
1246 | /* Something unexpectedly bad happened. Be verbose | |
1247 | so we can tell what, and propagate the error back | |
1248 | to the stub, so it doesn't get stuck waiting for | |
1249 | a response. */ | |
1250 | exception_fprintf (gdb_stderr, ex, | |
1251 | _("warning: relocating instruction: ")); | |
1252 | } | |
1253 | putpkt ("E01"); | |
1254 | } | |
1255 | ||
1256 | if (relocated) | |
dde08ee1 PA |
1257 | { |
1258 | adjusted_size = to - org_to; | |
1259 | ||
8d64371b | 1260 | xsnprintf (buf, rs->buf.size (), "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1261 | putpkt (buf); |
1262 | } | |
dde08ee1 | 1263 | } |
ad91cd99 | 1264 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1265 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1266 | else | |
0df8b418 | 1267 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1268 | } |
1269 | while (1); | |
1270 | } | |
3c3bea1c | 1271 | |
9d6eea31 PA |
1272 | struct remote_arch_state * |
1273 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1274 | { |
43c3a0e4 PA |
1275 | remote_arch_state *rsa; |
1276 | ||
1277 | auto it = this->m_arch_states.find (gdbarch); | |
1278 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1279 | { |
43c3a0e4 PA |
1280 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1281 | std::forward_as_tuple (gdbarch), | |
1282 | std::forward_as_tuple (gdbarch)); | |
1283 | rsa = &p.first->second; | |
9d6eea31 PA |
1284 | |
1285 | /* Make sure that the packet buffer is plenty big enough for | |
1286 | this architecture. */ | |
8d64371b TT |
1287 | if (this->buf.size () < rsa->remote_packet_size) |
1288 | this->buf.resize (2 * rsa->remote_packet_size); | |
9d6eea31 | 1289 | } |
43c3a0e4 PA |
1290 | else |
1291 | rsa = &it->second; | |
1292 | ||
1293 | return rsa; | |
d01949b6 AC |
1294 | } |
1295 | ||
0b83947e DJ |
1296 | /* Fetch the global remote target state. */ |
1297 | ||
6b8edb51 PA |
1298 | remote_state * |
1299 | remote_target::get_remote_state () | |
0b83947e DJ |
1300 | { |
1301 | /* Make sure that the remote architecture state has been | |
1302 | initialized, because doing so might reallocate rs->buf. Any | |
1303 | function which calls getpkt also needs to be mindful of changes | |
1304 | to rs->buf, but this call limits the number of places which run | |
1305 | into trouble. */ | |
3c69da40 | 1306 | m_remote_state.get_remote_arch_state (target_gdbarch ()); |
0b83947e | 1307 | |
3c69da40 | 1308 | return &m_remote_state; |
0b83947e DJ |
1309 | } |
1310 | ||
94585166 DB |
1311 | /* Fetch the remote exec-file from the current program space. */ |
1312 | ||
1313 | static const char * | |
1314 | get_remote_exec_file (void) | |
1315 | { | |
1316 | char *remote_exec_file; | |
1317 | ||
7b4a314f | 1318 | remote_exec_file = remote_pspace_data.get (current_program_space); |
94585166 DB |
1319 | if (remote_exec_file == NULL) |
1320 | return ""; | |
1321 | ||
1322 | return remote_exec_file; | |
1323 | } | |
1324 | ||
1325 | /* Set the remote exec file for PSPACE. */ | |
1326 | ||
1327 | static void | |
1328 | set_pspace_remote_exec_file (struct program_space *pspace, | |
7b4a314f | 1329 | const char *remote_exec_file) |
94585166 | 1330 | { |
7b4a314f | 1331 | char *old_file = remote_pspace_data.get (pspace); |
94585166 DB |
1332 | |
1333 | xfree (old_file); | |
7b4a314f | 1334 | remote_pspace_data.set (pspace, xstrdup (remote_exec_file)); |
94585166 DB |
1335 | } |
1336 | ||
1337 | /* The "set/show remote exec-file" set command hook. */ | |
1338 | ||
1339 | static void | |
eb4c3f4a | 1340 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1341 | struct cmd_list_element *c) |
1342 | { | |
1343 | gdb_assert (remote_exec_file_var != NULL); | |
1344 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
1345 | } | |
1346 | ||
1347 | /* The "set/show remote exec-file" show command hook. */ | |
1348 | ||
1349 | static void | |
1350 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1351 | struct cmd_list_element *cmd, const char *value) | |
1352 | { | |
acdf84a6 | 1353 | fprintf_filtered (file, "%s\n", get_remote_exec_file ()); |
94585166 DB |
1354 | } |
1355 | ||
c21236dc PA |
1356 | static int |
1357 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1358 | { |
74ca34ce | 1359 | int regnum, num_remote_regs, offset; |
74ca34ce | 1360 | struct packet_reg **remote_regs; |
ea9c271d | 1361 | |
4a22f64d | 1362 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1363 | { |
c21236dc | 1364 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1365 | |
4a22f64d | 1366 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1367 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1368 | r->pnum = -1; | |
1369 | else | |
1370 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1371 | ||
b323314b | 1372 | r->regnum = regnum; |
74ca34ce DJ |
1373 | } |
1374 | ||
1375 | /* Define the g/G packet format as the contents of each register | |
1376 | with a remote protocol number, in order of ascending protocol | |
1377 | number. */ | |
1378 | ||
224c3ddb | 1379 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1380 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1381 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1382 | regnum++) |
c21236dc PA |
1383 | if (regs[regnum].pnum != -1) |
1384 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1385 | |
39ef2f62 CB |
1386 | std::sort (remote_regs, remote_regs + num_remote_regs, |
1387 | [] (const packet_reg *a, const packet_reg *b) | |
1388 | { return a->pnum < b->pnum; }); | |
74ca34ce DJ |
1389 | |
1390 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1391 | { | |
1392 | remote_regs[regnum]->in_g_packet = 1; | |
1393 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1394 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1395 | } |
1396 | ||
c21236dc PA |
1397 | return offset; |
1398 | } | |
1399 | ||
1400 | /* Given the architecture described by GDBARCH, return the remote | |
1401 | protocol register's number and the register's offset in the g/G | |
1402 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1403 | If the target does not have a mapping for REGNUM, return false, | |
1404 | otherwise, return true. */ | |
1405 | ||
1406 | int | |
1407 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1408 | int *pnum, int *poffset) | |
1409 | { | |
c21236dc PA |
1410 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1411 | ||
b80406ac | 1412 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1413 | |
b80406ac | 1414 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1415 | |
1416 | *pnum = regs[regnum].pnum; | |
1417 | *poffset = regs[regnum].offset; | |
1418 | ||
c21236dc PA |
1419 | return *pnum != -1; |
1420 | } | |
1421 | ||
9d6eea31 | 1422 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1423 | { |
c21236dc PA |
1424 | /* Use the architecture to build a regnum<->pnum table, which will be |
1425 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1426 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1427 | |
74ca34ce DJ |
1428 | /* Record the maximum possible size of the g packet - it may turn out |
1429 | to be smaller. */ | |
9d6eea31 PA |
1430 | this->sizeof_g_packet |
1431 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1432 | |
0df8b418 | 1433 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1434 | remote stubs have a hardwired buffer size of 400 bytes |
1435 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1436 | as the maximum packet-size to ensure that the packet and an extra | |
1437 | NUL character can always fit in the buffer. This stops GDB | |
1438 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1439 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1440 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1441 | |
ea9c271d | 1442 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1443 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1444 | |
1445 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1446 | default, adjust the size accordingly. Remember that each byte is |
1447 | encoded as two characters. 32 is the overhead for the packet | |
1448 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1449 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1450 | little. */ |
9d6eea31 PA |
1451 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1452 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1453 | } |
1454 | ||
6b8edb51 PA |
1455 | /* Get a pointer to the current remote target. If not connected to a |
1456 | remote target, return NULL. */ | |
1457 | ||
1458 | static remote_target * | |
1459 | get_current_remote_target () | |
1460 | { | |
5b6d1e4f | 1461 | target_ops *proc_target = current_inferior ()->process_target (); |
6b8edb51 PA |
1462 | return dynamic_cast<remote_target *> (proc_target); |
1463 | } | |
1464 | ||
ea9c271d DJ |
1465 | /* Return the current allowed size of a remote packet. This is |
1466 | inferred from the current architecture, and should be used to | |
1467 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1468 | long |
1469 | remote_target::get_remote_packet_size () | |
ea9c271d | 1470 | { |
be2a5f71 | 1471 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1472 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1473 | |
be2a5f71 DJ |
1474 | if (rs->explicit_packet_size) |
1475 | return rs->explicit_packet_size; | |
1476 | ||
ea9c271d | 1477 | return rsa->remote_packet_size; |
d01949b6 AC |
1478 | } |
1479 | ||
ad10f812 | 1480 | static struct packet_reg * |
5cd63fda PA |
1481 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1482 | long regnum) | |
ad10f812 | 1483 | { |
5cd63fda | 1484 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1485 | return NULL; |
1486 | else | |
ad10f812 | 1487 | { |
ea9c271d | 1488 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1489 | |
b323314b AC |
1490 | gdb_assert (r->regnum == regnum); |
1491 | return r; | |
ad10f812 | 1492 | } |
ad10f812 AC |
1493 | } |
1494 | ||
1495 | static struct packet_reg * | |
5cd63fda PA |
1496 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1497 | LONGEST pnum) | |
ad10f812 | 1498 | { |
b323314b | 1499 | int i; |
a744cf53 | 1500 | |
5cd63fda | 1501 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1502 | { |
ea9c271d | 1503 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1504 | |
b323314b AC |
1505 | if (r->pnum == pnum) |
1506 | return r; | |
ad10f812 AC |
1507 | } |
1508 | return NULL; | |
d01949b6 AC |
1509 | } |
1510 | ||
9a7071a8 JB |
1511 | /* Allow the user to specify what sequence to send to the remote |
1512 | when he requests a program interruption: Although ^C is usually | |
1513 | what remote systems expect (this is the default, here), it is | |
1514 | sometimes preferable to send a break. On other systems such | |
1515 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1516 | is required in order to interrupt the execution. */ | |
1517 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1518 | const char interrupt_sequence_break[] = "BREAK"; | |
1519 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1520 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1521 | { |
1522 | interrupt_sequence_control_c, | |
1523 | interrupt_sequence_break, | |
1524 | interrupt_sequence_break_g, | |
1525 | NULL | |
1526 | }; | |
1527 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1528 | ||
1529 | static void | |
1530 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1531 | struct cmd_list_element *c, | |
1532 | const char *value) | |
1533 | { | |
1534 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
1535 | fprintf_filtered (file, | |
1536 | _("Send the ASCII ETX character (Ctrl-c) " | |
1537 | "to the remote target to interrupt the " | |
1538 | "execution of the program.\n")); | |
1539 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
1540 | fprintf_filtered (file, | |
1541 | _("send a break signal to the remote target " | |
1542 | "to interrupt the execution of the program.\n")); | |
1543 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
1544 | fprintf_filtered (file, | |
1545 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1546 | "the remote target to interrupt the execution " | |
1547 | "of Linux kernel.\n")); | |
1548 | else | |
1549 | internal_error (__FILE__, __LINE__, | |
1550 | _("Invalid value for interrupt_sequence_mode: %s."), | |
1551 | interrupt_sequence_mode); | |
1552 | } | |
6426a772 | 1553 | |
9a7071a8 JB |
1554 | /* This boolean variable specifies whether interrupt_sequence is sent |
1555 | to the remote target when gdb connects to it. | |
1556 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1557 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
491144b5 | 1558 | static bool interrupt_on_connect = false; |
c906108c | 1559 | |
9a7071a8 JB |
1560 | /* This variable is used to implement the "set/show remotebreak" commands. |
1561 | Since these commands are now deprecated in favor of "set/show remote | |
1562 | interrupt-sequence", it no longer has any effect on the code. */ | |
491144b5 | 1563 | static bool remote_break; |
c906108c | 1564 | |
9a7071a8 | 1565 | static void |
eb4c3f4a | 1566 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1567 | { |
1568 | if (remote_break) | |
1569 | interrupt_sequence_mode = interrupt_sequence_break; | |
1570 | else | |
1571 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1572 | } | |
1573 | ||
1574 | static void | |
1575 | show_remotebreak (struct ui_file *file, int from_tty, | |
1576 | struct cmd_list_element *c, | |
1577 | const char *value) | |
1578 | { | |
1579 | } | |
1580 | ||
c906108c SS |
1581 | /* This variable sets the number of bits in an address that are to be |
1582 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1583 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1584 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1585 | initial implementation of remote.c restricted the address sent in | |
1586 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1587 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1588 | address was never sent. Since fixing this bug may cause a break in | |
85102364 | 1589 | some remote targets this variable is principally provided to |
23860348 | 1590 | facilitate backward compatibility. */ |
c906108c | 1591 | |
883b9c6c | 1592 | static unsigned int remote_address_size; |
c906108c | 1593 | |
11cf8741 | 1594 | \f |
11cf8741 | 1595 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1596 | memory read/write packet. MIN (rsa->remote_packet_size, |
1597 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1598 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1599 | (speed up transfers). The variables ``preferred_*'' (the user |
1600 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1601 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1602 | |
1603 | struct memory_packet_config | |
1604 | { | |
a121b7c1 | 1605 | const char *name; |
11cf8741 JM |
1606 | long size; |
1607 | int fixed_p; | |
1608 | }; | |
1609 | ||
cc0be08f PA |
1610 | /* The default max memory-write-packet-size, when the setting is |
1611 | "fixed". The 16k is historical. (It came from older GDB's using | |
1612 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1613 | don't cope very well with large alloca calls.) */ | |
1614 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1615 | |
1616 | /* The minimum remote packet size for memory transfers. Ensures we | |
1617 | can write at least one byte. */ | |
1618 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1619 | ||
cc0be08f PA |
1620 | /* Get the memory packet size, assuming it is fixed. */ |
1621 | ||
1622 | static long | |
1623 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1624 | { | |
1625 | gdb_assert (config->fixed_p); | |
1626 | ||
1627 | if (config->size <= 0) | |
1628 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1629 | else | |
1630 | return config->size; | |
1631 | } | |
1632 | ||
11cf8741 JM |
1633 | /* Compute the current size of a read/write packet. Since this makes |
1634 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1635 | ||
6b8edb51 PA |
1636 | long |
1637 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 1638 | { |
d01949b6 | 1639 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1640 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1641 | |
11cf8741 JM |
1642 | long what_they_get; |
1643 | if (config->fixed_p) | |
cc0be08f | 1644 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1645 | else |
1646 | { | |
ea9c271d | 1647 | what_they_get = get_remote_packet_size (); |
23860348 | 1648 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1649 | if (config->size > 0 |
1650 | && what_they_get > config->size) | |
1651 | what_they_get = config->size; | |
be2a5f71 DJ |
1652 | |
1653 | /* Limit it to the size of the targets ``g'' response unless we have | |
1654 | permission from the stub to use a larger packet size. */ | |
1655 | if (rs->explicit_packet_size == 0 | |
1656 | && rsa->actual_register_packet_size > 0 | |
1657 | && what_they_get > rsa->actual_register_packet_size) | |
1658 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1659 | } |
a5c0808e PA |
1660 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1661 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1662 | |
1663 | /* Make sure there is room in the global buffer for this packet | |
1664 | (including its trailing NUL byte). */ | |
8d64371b TT |
1665 | if (rs->buf.size () < what_they_get + 1) |
1666 | rs->buf.resize (2 * what_they_get); | |
6d820c5c | 1667 | |
11cf8741 JM |
1668 | return what_they_get; |
1669 | } | |
1670 | ||
0df8b418 | 1671 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1672 | something really big then do a sanity check. */ |
11cf8741 JM |
1673 | |
1674 | static void | |
ac88e2de | 1675 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1676 | { |
1677 | int fixed_p = config->fixed_p; | |
1678 | long size = config->size; | |
a744cf53 | 1679 | |
11cf8741 | 1680 | if (args == NULL) |
8a3fe4f8 | 1681 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1682 | else if (strcmp (args, "hard") == 0 |
1683 | || strcmp (args, "fixed") == 0) | |
1684 | fixed_p = 1; | |
1685 | else if (strcmp (args, "soft") == 0 | |
1686 | || strcmp (args, "limit") == 0) | |
1687 | fixed_p = 0; | |
1688 | else | |
1689 | { | |
1690 | char *end; | |
a744cf53 | 1691 | |
11cf8741 JM |
1692 | size = strtoul (args, &end, 0); |
1693 | if (args == end) | |
8a3fe4f8 | 1694 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1695 | |
1696 | /* Instead of explicitly capping the size of a packet to or | |
1697 | disallowing it, the user is allowed to set the size to | |
1698 | something arbitrarily large. */ | |
11cf8741 | 1699 | } |
a5c0808e | 1700 | |
23860348 | 1701 | /* Extra checks? */ |
11cf8741 JM |
1702 | if (fixed_p && !config->fixed_p) |
1703 | { | |
cc0be08f PA |
1704 | /* So that the query shows the correct value. */ |
1705 | long query_size = (size <= 0 | |
1706 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
1707 | : size); | |
1708 | ||
e2e0b3e5 AC |
1709 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1710 | "of %ld bytes. Change the packet size? "), | |
cc0be08f | 1711 | config->name, query_size)) |
8a3fe4f8 | 1712 | error (_("Packet size not changed.")); |
11cf8741 | 1713 | } |
23860348 | 1714 | /* Update the config. */ |
11cf8741 JM |
1715 | config->fixed_p = fixed_p; |
1716 | config->size = size; | |
1717 | } | |
1718 | ||
1719 | static void | |
1720 | show_memory_packet_size (struct memory_packet_config *config) | |
1721 | { | |
cc0be08f PA |
1722 | if (config->size == 0) |
1723 | printf_filtered (_("The %s is 0 (default). "), config->name); | |
1724 | else | |
1725 | printf_filtered (_("The %s is %ld. "), config->name, config->size); | |
11cf8741 | 1726 | if (config->fixed_p) |
a3f17187 | 1727 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
cc0be08f | 1728 | get_fixed_memory_packet_size (config)); |
11cf8741 | 1729 | else |
cc0be08f | 1730 | { |
6b8edb51 | 1731 | remote_target *remote = get_current_remote_target (); |
cc0be08f | 1732 | |
6b8edb51 | 1733 | if (remote != NULL) |
cc0be08f | 1734 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
6b8edb51 | 1735 | remote->get_memory_packet_size (config)); |
cc0be08f PA |
1736 | else |
1737 | puts_filtered ("The actual limit will be further reduced " | |
1738 | "dependent on the target.\n"); | |
1739 | } | |
11cf8741 JM |
1740 | } |
1741 | ||
5b6d1e4f | 1742 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1743 | static struct memory_packet_config memory_write_packet_config = |
1744 | { | |
1745 | "memory-write-packet-size", | |
1746 | }; | |
1747 | ||
1748 | static void | |
ac88e2de | 1749 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1750 | { |
1751 | set_memory_packet_size (args, &memory_write_packet_config); | |
1752 | } | |
1753 | ||
1754 | static void | |
ac88e2de | 1755 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1756 | { |
1757 | show_memory_packet_size (&memory_write_packet_config); | |
1758 | } | |
1759 | ||
055303e2 AB |
1760 | /* Show the number of hardware watchpoints that can be used. */ |
1761 | ||
1762 | static void | |
1763 | show_hardware_watchpoint_limit (struct ui_file *file, int from_tty, | |
1764 | struct cmd_list_element *c, | |
1765 | const char *value) | |
1766 | { | |
1767 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1768 | "watchpoints is %s.\n"), value); | |
1769 | } | |
1770 | ||
1771 | /* Show the length limit (in bytes) for hardware watchpoints. */ | |
1772 | ||
1773 | static void | |
1774 | show_hardware_watchpoint_length_limit (struct ui_file *file, int from_tty, | |
1775 | struct cmd_list_element *c, | |
1776 | const char *value) | |
1777 | { | |
1778 | fprintf_filtered (file, _("The maximum length (in bytes) of a target " | |
1779 | "hardware watchpoint is %s.\n"), value); | |
1780 | } | |
1781 | ||
1782 | /* Show the number of hardware breakpoints that can be used. */ | |
1783 | ||
1784 | static void | |
1785 | show_hardware_breakpoint_limit (struct ui_file *file, int from_tty, | |
1786 | struct cmd_list_element *c, | |
1787 | const char *value) | |
1788 | { | |
1789 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1790 | "breakpoints is %s.\n"), value); | |
1791 | } | |
1792 | ||
6cc8564b LM |
1793 | /* Controls the maximum number of characters to display in the debug output |
1794 | for each remote packet. The remaining characters are omitted. */ | |
1795 | ||
1796 | static int remote_packet_max_chars = 512; | |
1797 | ||
1798 | /* Show the maximum number of characters to display for each remote packet | |
1799 | when remote debugging is enabled. */ | |
1800 | ||
1801 | static void | |
1802 | show_remote_packet_max_chars (struct ui_file *file, int from_tty, | |
1803 | struct cmd_list_element *c, | |
1804 | const char *value) | |
1805 | { | |
1806 | fprintf_filtered (file, _("Number of remote packet characters to " | |
1807 | "display is %s.\n"), value); | |
1808 | } | |
1809 | ||
6b8edb51 PA |
1810 | long |
1811 | remote_target::get_memory_write_packet_size () | |
11cf8741 JM |
1812 | { |
1813 | return get_memory_packet_size (&memory_write_packet_config); | |
1814 | } | |
1815 | ||
5b6d1e4f | 1816 | /* FIXME: needs to be per-remote-target. */ |
11cf8741 JM |
1817 | static struct memory_packet_config memory_read_packet_config = |
1818 | { | |
1819 | "memory-read-packet-size", | |
1820 | }; | |
1821 | ||
1822 | static void | |
ac88e2de | 1823 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1824 | { |
1825 | set_memory_packet_size (args, &memory_read_packet_config); | |
1826 | } | |
1827 | ||
1828 | static void | |
ac88e2de | 1829 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1830 | { |
1831 | show_memory_packet_size (&memory_read_packet_config); | |
1832 | } | |
1833 | ||
6b8edb51 PA |
1834 | long |
1835 | remote_target::get_memory_read_packet_size () | |
11cf8741 JM |
1836 | { |
1837 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1838 | |
11cf8741 JM |
1839 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1840 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1841 | increased beyond this. */ |
1842 | if (size > get_remote_packet_size ()) | |
1843 | size = get_remote_packet_size (); | |
11cf8741 JM |
1844 | return size; |
1845 | } | |
1846 | ||
11cf8741 | 1847 | \f |
5a2468f5 | 1848 | |
5a2468f5 JM |
1849 | struct packet_config |
1850 | { | |
bb572ddd DJ |
1851 | const char *name; |
1852 | const char *title; | |
4082afcc PA |
1853 | |
1854 | /* If auto, GDB auto-detects support for this packet or feature, | |
1855 | either through qSupported, or by trying the packet and looking | |
1856 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1857 | packet. If false, the packet is disabled. Configs that don't |
1858 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1859 | enum auto_boolean detect; |
4082afcc PA |
1860 | |
1861 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1862 | enum packet_support support; |
1863 | }; | |
1864 | ||
4082afcc PA |
1865 | static enum packet_support packet_config_support (struct packet_config *config); |
1866 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1867 | |
1868 | static void | |
fba45db2 | 1869 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1870 | { |
a121b7c1 | 1871 | const char *support = "internal-error"; |
a744cf53 | 1872 | |
4082afcc | 1873 | switch (packet_config_support (config)) |
5a2468f5 JM |
1874 | { |
1875 | case PACKET_ENABLE: | |
1876 | support = "enabled"; | |
1877 | break; | |
1878 | case PACKET_DISABLE: | |
1879 | support = "disabled"; | |
1880 | break; | |
1881 | case PACKET_SUPPORT_UNKNOWN: | |
1882 | support = "unknown"; | |
1883 | break; | |
1884 | } | |
1885 | switch (config->detect) | |
1886 | { | |
7f19b9a2 | 1887 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1888 | printf_filtered (_("Support for the `%s' packet " |
1889 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1890 | config->name, support); |
5a2468f5 | 1891 | break; |
7f19b9a2 AC |
1892 | case AUTO_BOOLEAN_TRUE: |
1893 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1894 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1895 | config->name, support); | |
8e248173 | 1896 | break; |
5a2468f5 JM |
1897 | } |
1898 | } | |
1899 | ||
1900 | static void | |
bb572ddd DJ |
1901 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1902 | const char *title, int legacy) | |
d471ea57 | 1903 | { |
5a2468f5 JM |
1904 | char *set_doc; |
1905 | char *show_doc; | |
d471ea57 | 1906 | char *cmd_name; |
3ed07be4 | 1907 | |
5a2468f5 JM |
1908 | config->name = name; |
1909 | config->title = title; | |
590042fc | 1910 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet.", |
b435e160 | 1911 | name, title); |
3e43a32a | 1912 | show_doc = xstrprintf ("Show current use of remote " |
590042fc | 1913 | "protocol `%s' (%s) packet.", |
b435e160 | 1914 | name, title); |
d471ea57 | 1915 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1916 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1917 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1918 | &config->detect, set_doc, |
1919 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1920 | NULL, |
bb572ddd DJ |
1921 | show_remote_protocol_packet_cmd, |
1922 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1923 | /* The command code copies the documentation strings. */ |
1924 | xfree (set_doc); | |
1925 | xfree (show_doc); | |
23860348 | 1926 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1927 | if (legacy) |
1928 | { | |
1929 | char *legacy_name; | |
a744cf53 | 1930 | |
b435e160 | 1931 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1932 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1933 | &remote_set_cmdlist); |
d471ea57 | 1934 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1935 | &remote_show_cmdlist); |
d471ea57 | 1936 | } |
5a2468f5 JM |
1937 | } |
1938 | ||
d471ea57 | 1939 | static enum packet_result |
a76d924d | 1940 | packet_check_result (const char *buf) |
5a2468f5 | 1941 | { |
d471ea57 | 1942 | if (buf[0] != '\0') |
5a2468f5 | 1943 | { |
d471ea57 | 1944 | /* The stub recognized the packet request. Check that the |
23860348 | 1945 | operation succeeded. */ |
a76d924d DJ |
1946 | if (buf[0] == 'E' |
1947 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1948 | && buf[3] == '\0') | |
85102364 | 1949 | /* "Enn" - definitely an error. */ |
a76d924d DJ |
1950 | return PACKET_ERROR; |
1951 | ||
1952 | /* Always treat "E." as an error. This will be used for | |
1953 | more verbose error messages, such as E.memtypes. */ | |
1954 | if (buf[0] == 'E' && buf[1] == '.') | |
1955 | return PACKET_ERROR; | |
1956 | ||
1957 | /* The packet may or may not be OK. Just assume it is. */ | |
1958 | return PACKET_OK; | |
1959 | } | |
1960 | else | |
1961 | /* The stub does not support the packet. */ | |
1962 | return PACKET_UNKNOWN; | |
1963 | } | |
1964 | ||
8d64371b TT |
1965 | static enum packet_result |
1966 | packet_check_result (const gdb::char_vector &buf) | |
1967 | { | |
1968 | return packet_check_result (buf.data ()); | |
1969 | } | |
1970 | ||
a76d924d DJ |
1971 | static enum packet_result |
1972 | packet_ok (const char *buf, struct packet_config *config) | |
1973 | { | |
1974 | enum packet_result result; | |
1975 | ||
4082afcc PA |
1976 | if (config->detect != AUTO_BOOLEAN_TRUE |
1977 | && config->support == PACKET_DISABLE) | |
1978 | internal_error (__FILE__, __LINE__, | |
1979 | _("packet_ok: attempt to use a disabled packet")); | |
1980 | ||
a76d924d DJ |
1981 | result = packet_check_result (buf); |
1982 | switch (result) | |
1983 | { | |
1984 | case PACKET_OK: | |
1985 | case PACKET_ERROR: | |
1986 | /* The stub recognized the packet request. */ | |
4082afcc | 1987 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1988 | { |
d471ea57 AC |
1989 | if (remote_debug) |
1990 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1991 | "Packet %s (%s) is supported\n", |
1992 | config->name, config->title); | |
d471ea57 | 1993 | config->support = PACKET_ENABLE; |
d471ea57 | 1994 | } |
a76d924d DJ |
1995 | break; |
1996 | case PACKET_UNKNOWN: | |
23860348 | 1997 | /* The stub does not support the packet. */ |
4082afcc PA |
1998 | if (config->detect == AUTO_BOOLEAN_AUTO |
1999 | && config->support == PACKET_ENABLE) | |
d471ea57 | 2000 | { |
4082afcc PA |
2001 | /* If the stub previously indicated that the packet was |
2002 | supported then there is a protocol error. */ | |
2003 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
2004 | config->name, config->title); | |
2005 | } | |
2006 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
2007 | { | |
2008 | /* The user set it wrong. */ | |
2009 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
2010 | config->name, config->title); | |
d471ea57 | 2011 | } |
4082afcc PA |
2012 | |
2013 | if (remote_debug) | |
2014 | fprintf_unfiltered (gdb_stdlog, | |
2015 | "Packet %s (%s) is NOT supported\n", | |
2016 | config->name, config->title); | |
2017 | config->support = PACKET_DISABLE; | |
a76d924d | 2018 | break; |
5a2468f5 | 2019 | } |
a76d924d DJ |
2020 | |
2021 | return result; | |
5a2468f5 JM |
2022 | } |
2023 | ||
8d64371b TT |
2024 | static enum packet_result |
2025 | packet_ok (const gdb::char_vector &buf, struct packet_config *config) | |
2026 | { | |
2027 | return packet_ok (buf.data (), config); | |
2028 | } | |
2029 | ||
444abaca DJ |
2030 | enum { |
2031 | PACKET_vCont = 0, | |
2032 | PACKET_X, | |
2033 | PACKET_qSymbol, | |
2034 | PACKET_P, | |
2035 | PACKET_p, | |
2036 | PACKET_Z0, | |
2037 | PACKET_Z1, | |
2038 | PACKET_Z2, | |
2039 | PACKET_Z3, | |
2040 | PACKET_Z4, | |
15a201c8 | 2041 | PACKET_vFile_setfs, |
a6b151f1 DJ |
2042 | PACKET_vFile_open, |
2043 | PACKET_vFile_pread, | |
2044 | PACKET_vFile_pwrite, | |
2045 | PACKET_vFile_close, | |
2046 | PACKET_vFile_unlink, | |
b9e7b9c3 | 2047 | PACKET_vFile_readlink, |
0a93529c | 2048 | PACKET_vFile_fstat, |
0876f84a | 2049 | PACKET_qXfer_auxv, |
23181151 | 2050 | PACKET_qXfer_features, |
c78fa86a | 2051 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 2052 | PACKET_qXfer_libraries, |
2268b414 | 2053 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 2054 | PACKET_qXfer_memory_map, |
07e059b5 | 2055 | PACKET_qXfer_osdata, |
dc146f7c | 2056 | PACKET_qXfer_threads, |
0fb4aa4b | 2057 | PACKET_qXfer_statictrace_read, |
b3b9301e | 2058 | PACKET_qXfer_traceframe_info, |
169081d0 | 2059 | PACKET_qXfer_uib, |
711e434b | 2060 | PACKET_qGetTIBAddr, |
444abaca | 2061 | PACKET_qGetTLSAddr, |
be2a5f71 | 2062 | PACKET_qSupported, |
bd3eecc3 | 2063 | PACKET_qTStatus, |
89be2091 | 2064 | PACKET_QPassSignals, |
82075af2 | 2065 | PACKET_QCatchSyscalls, |
9b224c5e | 2066 | PACKET_QProgramSignals, |
bc3b087d | 2067 | PACKET_QSetWorkingDir, |
aefd8b33 | 2068 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
2069 | PACKET_QEnvironmentHexEncoded, |
2070 | PACKET_QEnvironmentReset, | |
2071 | PACKET_QEnvironmentUnset, | |
936d2992 | 2072 | PACKET_qCRC, |
08388c79 | 2073 | PACKET_qSearch_memory, |
2d717e4f DJ |
2074 | PACKET_vAttach, |
2075 | PACKET_vRun, | |
a6f3e723 | 2076 | PACKET_QStartNoAckMode, |
82f73884 | 2077 | PACKET_vKill, |
4aa995e1 PA |
2078 | PACKET_qXfer_siginfo_read, |
2079 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 2080 | PACKET_qAttached, |
4082afcc PA |
2081 | |
2082 | /* Support for conditional tracepoints. */ | |
782b2b07 | 2083 | PACKET_ConditionalTracepoints, |
4082afcc PA |
2084 | |
2085 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 2086 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
2087 | |
2088 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 2089 | PACKET_BreakpointCommands, |
4082afcc PA |
2090 | |
2091 | /* Support for fast tracepoints. */ | |
7a697b8d | 2092 | PACKET_FastTracepoints, |
4082afcc PA |
2093 | |
2094 | /* Support for static tracepoints. */ | |
0fb4aa4b | 2095 | PACKET_StaticTracepoints, |
4082afcc PA |
2096 | |
2097 | /* Support for installing tracepoints while a trace experiment is | |
2098 | running. */ | |
1e4d1764 | 2099 | PACKET_InstallInTrace, |
4082afcc | 2100 | |
40ab02ce MS |
2101 | PACKET_bc, |
2102 | PACKET_bs, | |
409873ef | 2103 | PACKET_TracepointSource, |
d914c394 | 2104 | PACKET_QAllow, |
78d85199 | 2105 | PACKET_qXfer_fdpic, |
03583c20 | 2106 | PACKET_QDisableRandomization, |
d1feda86 | 2107 | PACKET_QAgent, |
f6f899bf | 2108 | PACKET_QTBuffer_size, |
9accd112 MM |
2109 | PACKET_Qbtrace_off, |
2110 | PACKET_Qbtrace_bts, | |
b20a6524 | 2111 | PACKET_Qbtrace_pt, |
9accd112 | 2112 | PACKET_qXfer_btrace, |
4082afcc PA |
2113 | |
2114 | /* Support for the QNonStop packet. */ | |
2115 | PACKET_QNonStop, | |
2116 | ||
65706a29 PA |
2117 | /* Support for the QThreadEvents packet. */ |
2118 | PACKET_QThreadEvents, | |
2119 | ||
4082afcc PA |
2120 | /* Support for multi-process extensions. */ |
2121 | PACKET_multiprocess_feature, | |
2122 | ||
2123 | /* Support for enabling and disabling tracepoints while a trace | |
2124 | experiment is running. */ | |
2125 | PACKET_EnableDisableTracepoints_feature, | |
2126 | ||
2127 | /* Support for collecting strings using the tracenz bytecode. */ | |
2128 | PACKET_tracenz_feature, | |
2129 | ||
2130 | /* Support for continuing to run a trace experiment while GDB is | |
2131 | disconnected. */ | |
2132 | PACKET_DisconnectedTracing_feature, | |
2133 | ||
2134 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
2135 | PACKET_augmented_libraries_svr4_read_feature, | |
2136 | ||
f4abbc16 MM |
2137 | /* Support for the qXfer:btrace-conf:read packet. */ |
2138 | PACKET_qXfer_btrace_conf, | |
2139 | ||
d33501a5 MM |
2140 | /* Support for the Qbtrace-conf:bts:size packet. */ |
2141 | PACKET_Qbtrace_conf_bts_size, | |
2142 | ||
f7e6eed5 PA |
2143 | /* Support for swbreak+ feature. */ |
2144 | PACKET_swbreak_feature, | |
2145 | ||
2146 | /* Support for hwbreak+ feature. */ | |
2147 | PACKET_hwbreak_feature, | |
2148 | ||
89245bc0 DB |
2149 | /* Support for fork events. */ |
2150 | PACKET_fork_event_feature, | |
2151 | ||
2152 | /* Support for vfork events. */ | |
2153 | PACKET_vfork_event_feature, | |
2154 | ||
b20a6524 MM |
2155 | /* Support for the Qbtrace-conf:pt:size packet. */ |
2156 | PACKET_Qbtrace_conf_pt_size, | |
2157 | ||
94585166 DB |
2158 | /* Support for exec events. */ |
2159 | PACKET_exec_event_feature, | |
2160 | ||
750ce8d1 YQ |
2161 | /* Support for query supported vCont actions. */ |
2162 | PACKET_vContSupported, | |
2163 | ||
de979965 PA |
2164 | /* Support remote CTRL-C. */ |
2165 | PACKET_vCtrlC, | |
2166 | ||
f2faf941 PA |
2167 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
2168 | PACKET_no_resumed, | |
2169 | ||
444abaca DJ |
2170 | PACKET_MAX |
2171 | }; | |
506fb367 | 2172 | |
5b6d1e4f PA |
2173 | /* FIXME: needs to be per-remote-target. Ignoring this for now, |
2174 | assuming all remote targets are the same server (thus all support | |
2175 | the same packets). */ | |
444abaca | 2176 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 2177 | |
f7e6eed5 PA |
2178 | /* Returns the packet's corresponding "set remote foo-packet" command |
2179 | state. See struct packet_config for more details. */ | |
2180 | ||
2181 | static enum auto_boolean | |
2182 | packet_set_cmd_state (int packet) | |
2183 | { | |
2184 | return remote_protocol_packets[packet].detect; | |
2185 | } | |
2186 | ||
4082afcc PA |
2187 | /* Returns whether a given packet or feature is supported. This takes |
2188 | into account the state of the corresponding "set remote foo-packet" | |
2189 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2190 | |
4082afcc PA |
2191 | static enum packet_support |
2192 | packet_config_support (struct packet_config *config) | |
2193 | { | |
2194 | switch (config->detect) | |
444abaca | 2195 | { |
4082afcc PA |
2196 | case AUTO_BOOLEAN_TRUE: |
2197 | return PACKET_ENABLE; | |
2198 | case AUTO_BOOLEAN_FALSE: | |
2199 | return PACKET_DISABLE; | |
2200 | case AUTO_BOOLEAN_AUTO: | |
2201 | return config->support; | |
2202 | default: | |
2203 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 2204 | } |
4082afcc PA |
2205 | } |
2206 | ||
2207 | /* Same as packet_config_support, but takes the packet's enum value as | |
2208 | argument. */ | |
2209 | ||
2210 | static enum packet_support | |
2211 | packet_support (int packet) | |
2212 | { | |
2213 | struct packet_config *config = &remote_protocol_packets[packet]; | |
2214 | ||
2215 | return packet_config_support (config); | |
dc8acb97 MS |
2216 | } |
2217 | ||
5a2468f5 | 2218 | static void |
444abaca DJ |
2219 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2220 | struct cmd_list_element *c, | |
2221 | const char *value) | |
5a2468f5 | 2222 | { |
444abaca | 2223 | struct packet_config *packet; |
5a2468f5 | 2224 | |
444abaca DJ |
2225 | for (packet = remote_protocol_packets; |
2226 | packet < &remote_protocol_packets[PACKET_MAX]; | |
2227 | packet++) | |
2228 | { | |
2229 | if (&packet->detect == c->var) | |
2230 | { | |
2231 | show_packet_config_cmd (packet); | |
2232 | return; | |
2233 | } | |
2234 | } | |
9b20d036 | 2235 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 2236 | c->name); |
5a2468f5 JM |
2237 | } |
2238 | ||
d471ea57 AC |
2239 | /* Should we try one of the 'Z' requests? */ |
2240 | ||
2241 | enum Z_packet_type | |
2242 | { | |
2243 | Z_PACKET_SOFTWARE_BP, | |
2244 | Z_PACKET_HARDWARE_BP, | |
2245 | Z_PACKET_WRITE_WP, | |
2246 | Z_PACKET_READ_WP, | |
2247 | Z_PACKET_ACCESS_WP, | |
2248 | NR_Z_PACKET_TYPES | |
2249 | }; | |
96baa820 | 2250 | |
d471ea57 | 2251 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2252 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2253 | |
7f19b9a2 | 2254 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2255 | |
2256 | static void | |
eb4c3f4a | 2257 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2258 | struct cmd_list_element *c) |
96baa820 | 2259 | { |
d471ea57 | 2260 | int i; |
a744cf53 | 2261 | |
d471ea57 | 2262 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 2263 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
2264 | } |
2265 | ||
2266 | static void | |
08546159 AC |
2267 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2268 | struct cmd_list_element *c, | |
2269 | const char *value) | |
96baa820 | 2270 | { |
d471ea57 | 2271 | int i; |
a744cf53 | 2272 | |
d471ea57 AC |
2273 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2274 | { | |
444abaca | 2275 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 2276 | } |
96baa820 JM |
2277 | } |
2278 | ||
4082afcc PA |
2279 | /* Returns true if the multi-process extensions are in effect. */ |
2280 | ||
2281 | static int | |
2282 | remote_multi_process_p (struct remote_state *rs) | |
2283 | { | |
2284 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
2285 | } | |
2286 | ||
de0d863e DB |
2287 | /* Returns true if fork events are supported. */ |
2288 | ||
2289 | static int | |
2290 | remote_fork_event_p (struct remote_state *rs) | |
2291 | { | |
2292 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
2293 | } | |
2294 | ||
c269dbdb DB |
2295 | /* Returns true if vfork events are supported. */ |
2296 | ||
2297 | static int | |
2298 | remote_vfork_event_p (struct remote_state *rs) | |
2299 | { | |
2300 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
2301 | } | |
2302 | ||
d46addbb DB |
2303 | /* Returns true if exec events are supported. */ |
2304 | ||
2305 | static int | |
2306 | remote_exec_event_p (struct remote_state *rs) | |
2307 | { | |
2308 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
2309 | } | |
2310 | ||
cbb8991c DB |
2311 | /* Insert fork catchpoint target routine. If fork events are enabled |
2312 | then return success, nothing more to do. */ | |
2313 | ||
f6ac5f3d PA |
2314 | int |
2315 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
2316 | { |
2317 | struct remote_state *rs = get_remote_state (); | |
2318 | ||
2319 | return !remote_fork_event_p (rs); | |
2320 | } | |
2321 | ||
2322 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2323 | return success. */ | |
2324 | ||
f6ac5f3d PA |
2325 | int |
2326 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2327 | { |
2328 | return 0; | |
2329 | } | |
2330 | ||
2331 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2332 | then return success, nothing more to do. */ | |
2333 | ||
f6ac5f3d PA |
2334 | int |
2335 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
2336 | { |
2337 | struct remote_state *rs = get_remote_state (); | |
2338 | ||
2339 | return !remote_vfork_event_p (rs); | |
2340 | } | |
2341 | ||
2342 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2343 | return success. */ | |
2344 | ||
f6ac5f3d PA |
2345 | int |
2346 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2347 | { |
2348 | return 0; | |
2349 | } | |
2350 | ||
d46addbb DB |
2351 | /* Insert exec catchpoint target routine. If exec events are |
2352 | enabled, just return success. */ | |
2353 | ||
f6ac5f3d PA |
2354 | int |
2355 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
2356 | { |
2357 | struct remote_state *rs = get_remote_state (); | |
2358 | ||
2359 | return !remote_exec_event_p (rs); | |
2360 | } | |
2361 | ||
2362 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2363 | return success. */ | |
2364 | ||
f6ac5f3d PA |
2365 | int |
2366 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2367 | { |
2368 | return 0; | |
2369 | } | |
2370 | ||
c906108c SS |
2371 | \f |
2372 | ||
ffdd69cf TT |
2373 | /* Take advantage of the fact that the TID field is not used, to tag |
2374 | special ptids with it set to != 0. */ | |
2375 | static const ptid_t magic_null_ptid (42000, -1, 1); | |
2376 | static const ptid_t not_sent_ptid (42000, -2, 1); | |
2377 | static const ptid_t any_thread_ptid (42000, 0, 1); | |
79d7f229 | 2378 | |
0b16c5cf PA |
2379 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2380 | detach instead of killing it when bailing out). */ | |
2381 | ||
6b8edb51 PA |
2382 | int |
2383 | remote_target::remote_query_attached (int pid) | |
0b16c5cf PA |
2384 | { |
2385 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2386 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2387 | |
4082afcc | 2388 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2389 | return 0; |
2390 | ||
2391 | if (remote_multi_process_p (rs)) | |
8d64371b | 2392 | xsnprintf (rs->buf.data (), size, "qAttached:%x", pid); |
0b16c5cf | 2393 | else |
8d64371b | 2394 | xsnprintf (rs->buf.data (), size, "qAttached"); |
0b16c5cf PA |
2395 | |
2396 | putpkt (rs->buf); | |
8d64371b | 2397 | getpkt (&rs->buf, 0); |
0b16c5cf PA |
2398 | |
2399 | switch (packet_ok (rs->buf, | |
1554e9be | 2400 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
2401 | { |
2402 | case PACKET_OK: | |
8d64371b | 2403 | if (strcmp (rs->buf.data (), "1") == 0) |
0b16c5cf PA |
2404 | return 1; |
2405 | break; | |
2406 | case PACKET_ERROR: | |
8d64371b | 2407 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
0b16c5cf PA |
2408 | break; |
2409 | case PACKET_UNKNOWN: | |
2410 | break; | |
2411 | } | |
2412 | ||
2413 | return 0; | |
2414 | } | |
2415 | ||
49c62f2e PA |
2416 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2417 | has been invented by GDB, instead of reported by the target. Since | |
2418 | we can be connected to a remote system before before knowing about | |
2419 | any inferior, mark the target with execution when we find the first | |
2420 | inferior. If ATTACHED is 1, then we had just attached to this | |
2421 | inferior. If it is 0, then we just created this inferior. If it | |
2422 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2423 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2424 | attempt to open this inferior's executable as the main executable | |
2425 | if no main executable is open already. */ | |
1941c569 | 2426 | |
6b8edb51 | 2427 | inferior * |
9ab8741a | 2428 | remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 | 2429 | int try_open_exec) |
1941c569 | 2430 | { |
1941c569 PA |
2431 | struct inferior *inf; |
2432 | ||
0b16c5cf PA |
2433 | /* Check whether this process we're learning about is to be |
2434 | considered attached, or if is to be considered to have been | |
2435 | spawned by the stub. */ | |
2436 | if (attached == -1) | |
2437 | attached = remote_query_attached (pid); | |
2438 | ||
f5656ead | 2439 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2440 | { |
2441 | /* If the target shares code across all inferiors, then every | |
2442 | attach adds a new inferior. */ | |
2443 | inf = add_inferior (pid); | |
2444 | ||
2445 | /* ... and every inferior is bound to the same program space. | |
2446 | However, each inferior may still have its own address | |
2447 | space. */ | |
2448 | inf->aspace = maybe_new_address_space (); | |
2449 | inf->pspace = current_program_space; | |
2450 | } | |
2451 | else | |
2452 | { | |
2453 | /* In the traditional debugging scenario, there's a 1-1 match | |
2454 | between program/address spaces. We simply bind the inferior | |
2455 | to the program space's address space. */ | |
2456 | inf = current_inferior (); | |
78f2c40a PA |
2457 | |
2458 | /* However, if the current inferior is already bound to a | |
2459 | process, find some other empty inferior. */ | |
2460 | if (inf->pid != 0) | |
2461 | { | |
2462 | inf = nullptr; | |
2463 | for (inferior *it : all_inferiors ()) | |
2464 | if (it->pid == 0) | |
2465 | { | |
2466 | inf = it; | |
2467 | break; | |
2468 | } | |
2469 | } | |
2470 | if (inf == nullptr) | |
2471 | { | |
2472 | /* Since all inferiors were already bound to a process, add | |
2473 | a new inferior. */ | |
2474 | inf = add_inferior_with_spaces (); | |
2475 | } | |
2476 | switch_to_inferior_no_thread (inf); | |
5b6d1e4f | 2477 | push_target (this); |
6c95b8df PA |
2478 | inferior_appeared (inf, pid); |
2479 | } | |
1941c569 | 2480 | |
0b16c5cf | 2481 | inf->attach_flag = attached; |
49c62f2e | 2482 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2483 | |
1b6e6f5c GB |
2484 | /* If no main executable is currently open then attempt to |
2485 | open the file that was executed to create this inferior. */ | |
835205d0 | 2486 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2487 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2488 | |
a2fedca9 PW |
2489 | /* Check for exec file mismatch, and let the user solve it. */ |
2490 | validate_exec_file (1); | |
2491 | ||
1941c569 PA |
2492 | return inf; |
2493 | } | |
2494 | ||
7aabaf9d | 2495 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
5b6d1e4f PA |
2496 | static remote_thread_info *get_remote_thread_info (remote_target *target, |
2497 | ptid_t ptid); | |
85ad3aaf | 2498 | |
1941c569 PA |
2499 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
2500 | according to RUNNING. */ | |
2501 | ||
00431a78 | 2502 | thread_info * |
6b8edb51 | 2503 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing) |
c906108c | 2504 | { |
b7ea362b | 2505 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2506 | struct thread_info *thread; |
b7ea362b PA |
2507 | |
2508 | /* GDB historically didn't pull threads in the initial connection | |
2509 | setup. If the remote target doesn't even have a concept of | |
2510 | threads (e.g., a bare-metal target), even if internally we | |
2511 | consider that a single-threaded target, mentioning a new thread | |
2512 | might be confusing to the user. Be silent then, preserving the | |
2513 | age old behavior. */ | |
2514 | if (rs->starting_up) | |
5b6d1e4f | 2515 | thread = add_thread_silent (this, ptid); |
b7ea362b | 2516 | else |
5b6d1e4f | 2517 | thread = add_thread (this, ptid); |
1941c569 | 2518 | |
c9d22089 SM |
2519 | /* We start by assuming threads are resumed. That state then gets updated |
2520 | when we process a matching stop reply. */ | |
2521 | get_remote_thread_info (thread)->set_resumed (); | |
2522 | ||
5b6d1e4f PA |
2523 | set_executing (this, ptid, executing); |
2524 | set_running (this, ptid, running); | |
00431a78 PA |
2525 | |
2526 | return thread; | |
1941c569 PA |
2527 | } |
2528 | ||
2529 | /* Come here when we learn about a thread id from the remote target. | |
2530 | It may be the first time we hear about such thread, so take the | |
2531 | opportunity to add it to GDB's thread list. In case this is the | |
2532 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2533 | GDB's inferior list as well. EXECUTING indicates whether the |
2534 | thread is (internally) executing or stopped. */ | |
1941c569 | 2535 | |
6b8edb51 PA |
2536 | void |
2537 | remote_target::remote_notice_new_inferior (ptid_t currthread, int executing) | |
1941c569 | 2538 | { |
0d5b594f PA |
2539 | /* In non-stop mode, we assume new found threads are (externally) |
2540 | running until proven otherwise with a stop reply. In all-stop, | |
2541 | we can only get here if all threads are stopped. */ | |
2542 | int running = target_is_non_stop_p () ? 1 : 0; | |
2543 | ||
c906108c SS |
2544 | /* If this is a new thread, add it to GDB's thread list. |
2545 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 | 2546 | |
5b6d1e4f | 2547 | thread_info *tp = find_thread_ptid (this, currthread); |
00431a78 | 2548 | if (tp != NULL && tp->state == THREAD_EXITED) |
82f73884 PA |
2549 | { |
2550 | /* We're seeing an event on a thread id we knew had exited. | |
2551 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 2552 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
2553 | return; |
2554 | } | |
2555 | ||
5b6d1e4f | 2556 | if (!in_thread_list (this, currthread)) |
c0a2216e | 2557 | { |
1941c569 | 2558 | struct inferior *inf = NULL; |
e99b03dc | 2559 | int pid = currthread.pid (); |
1941c569 | 2560 | |
0e998d96 | 2561 | if (inferior_ptid.is_pid () |
e99b03dc | 2562 | && pid == inferior_ptid.pid ()) |
c0a2216e PA |
2563 | { |
2564 | /* inferior_ptid has no thread member yet. This can happen | |
2565 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2566 | stub doesn't support qC. This is the first stop reported | |
2567 | after an attach, so this is the main thread. Update the | |
2568 | ptid in the thread list. */ | |
5b6d1e4f PA |
2569 | if (in_thread_list (this, ptid_t (pid))) |
2570 | thread_change_ptid (this, inferior_ptid, currthread); | |
bad34192 PA |
2571 | else |
2572 | { | |
0ac55310 PA |
2573 | thread_info *thr |
2574 | = remote_add_thread (currthread, running, executing); | |
2575 | switch_to_thread (thr); | |
bad34192 | 2576 | } |
dc146f7c | 2577 | return; |
c0a2216e | 2578 | } |
82f73884 | 2579 | |
d7e15655 | 2580 | if (magic_null_ptid == inferior_ptid) |
c0a2216e PA |
2581 | { |
2582 | /* inferior_ptid is not set yet. This can happen with the | |
2583 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2584 | doesn't support qC. This is the first stop reported | |
2585 | after an attach, so this is the main thread. Update the | |
2586 | ptid in the thread list. */ | |
5b6d1e4f | 2587 | thread_change_ptid (this, inferior_ptid, currthread); |
82f73884 | 2588 | return; |
c0a2216e | 2589 | } |
82f73884 | 2590 | |
29c87f7f PA |
2591 | /* When connecting to a target remote, or to a target |
2592 | extended-remote which already was debugging an inferior, we | |
2593 | may not know about it yet. Add it before adding its child | |
2594 | thread, so notifications are emitted in a sensible order. */ | |
5b6d1e4f | 2595 | if (find_inferior_pid (this, currthread.pid ()) == NULL) |
49c62f2e PA |
2596 | { |
2597 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 2598 | bool fake_pid_p = !remote_multi_process_p (rs); |
49c62f2e PA |
2599 | |
2600 | inf = remote_add_inferior (fake_pid_p, | |
e99b03dc | 2601 | currthread.pid (), -1, 1); |
49c62f2e | 2602 | } |
29c87f7f | 2603 | |
82f73884 | 2604 | /* This is really a new thread. Add it. */ |
00431a78 PA |
2605 | thread_info *new_thr |
2606 | = remote_add_thread (currthread, running, executing); | |
1941c569 PA |
2607 | |
2608 | /* If we found a new inferior, let the common code do whatever | |
2609 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2610 | breakpoints), unless we're just setting up an all-stop |
2611 | connection. */ | |
1941c569 | 2612 | if (inf != NULL) |
b7ea362b PA |
2613 | { |
2614 | struct remote_state *rs = get_remote_state (); | |
2615 | ||
6efcd9a8 | 2616 | if (!rs->starting_up) |
00431a78 | 2617 | notice_new_inferior (new_thr, executing, 0); |
b7ea362b | 2618 | } |
c0a2216e | 2619 | } |
c906108c SS |
2620 | } |
2621 | ||
85ad3aaf | 2622 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2623 | |
7aabaf9d SM |
2624 | static remote_thread_info * |
2625 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2626 | { |
85ad3aaf | 2627 | gdb_assert (thread != NULL); |
dc146f7c | 2628 | |
85ad3aaf | 2629 | if (thread->priv == NULL) |
7aabaf9d | 2630 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2631 | |
7aabaf9d | 2632 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2633 | } |
2634 | ||
5b6d1e4f PA |
2635 | /* Return PTID's private thread data, creating it if necessary. */ |
2636 | ||
7aabaf9d | 2637 | static remote_thread_info * |
5b6d1e4f | 2638 | get_remote_thread_info (remote_target *target, ptid_t ptid) |
85ad3aaf | 2639 | { |
5b6d1e4f | 2640 | thread_info *thr = find_thread_ptid (target, ptid); |
00431a78 | 2641 | return get_remote_thread_info (thr); |
dc146f7c VP |
2642 | } |
2643 | ||
74531fed PA |
2644 | /* Call this function as a result of |
2645 | 1) A halt indication (T packet) containing a thread id | |
2646 | 2) A direct query of currthread | |
0df8b418 | 2647 | 3) Successful execution of set thread */ |
74531fed PA |
2648 | |
2649 | static void | |
47f8a51d | 2650 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2651 | { |
47f8a51d | 2652 | rs->general_thread = currthread; |
74531fed PA |
2653 | } |
2654 | ||
89be2091 DJ |
2655 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2656 | it can simply pass through to the inferior without reporting. */ | |
2657 | ||
f6ac5f3d | 2658 | void |
adc6a863 | 2659 | remote_target::pass_signals (gdb::array_view<const unsigned char> pass_signals) |
89be2091 | 2660 | { |
4082afcc | 2661 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2662 | { |
2663 | char *pass_packet, *p; | |
adc6a863 | 2664 | int count = 0; |
747dc59d | 2665 | struct remote_state *rs = get_remote_state (); |
89be2091 | 2666 | |
adc6a863 PA |
2667 | gdb_assert (pass_signals.size () < 256); |
2668 | for (size_t i = 0; i < pass_signals.size (); i++) | |
89be2091 | 2669 | { |
2455069d | 2670 | if (pass_signals[i]) |
89be2091 DJ |
2671 | count++; |
2672 | } | |
224c3ddb | 2673 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2674 | strcpy (pass_packet, "QPassSignals:"); |
2675 | p = pass_packet + strlen (pass_packet); | |
adc6a863 | 2676 | for (size_t i = 0; i < pass_signals.size (); i++) |
89be2091 | 2677 | { |
2455069d | 2678 | if (pass_signals[i]) |
89be2091 DJ |
2679 | { |
2680 | if (i >= 16) | |
2681 | *p++ = tohex (i >> 4); | |
2682 | *p++ = tohex (i & 15); | |
2683 | if (count) | |
2684 | *p++ = ';'; | |
2685 | else | |
2686 | break; | |
2687 | count--; | |
2688 | } | |
2689 | } | |
2690 | *p = 0; | |
747dc59d | 2691 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2692 | { |
89be2091 | 2693 | putpkt (pass_packet); |
8d64371b | 2694 | getpkt (&rs->buf, 0); |
8dc5b319 | 2695 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
84d53fa9 | 2696 | xfree (rs->last_pass_packet); |
747dc59d | 2697 | rs->last_pass_packet = pass_packet; |
89be2091 DJ |
2698 | } |
2699 | else | |
2700 | xfree (pass_packet); | |
2701 | } | |
2702 | } | |
2703 | ||
82075af2 JS |
2704 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2705 | to report syscalls to GDB. */ | |
2706 | ||
f6ac5f3d PA |
2707 | int |
2708 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2709 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2710 | { |
b80406ac | 2711 | const char *catch_packet; |
82075af2 JS |
2712 | enum packet_result result; |
2713 | int n_sysno = 0; | |
2714 | ||
2715 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2716 | { | |
2717 | /* Not supported. */ | |
2718 | return 1; | |
2719 | } | |
2720 | ||
649a140c | 2721 | if (needed && any_count == 0) |
82075af2 | 2722 | { |
649a140c PA |
2723 | /* Count how many syscalls are to be caught. */ |
2724 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2725 | { |
649a140c | 2726 | if (syscall_counts[i] != 0) |
82075af2 JS |
2727 | n_sysno++; |
2728 | } | |
2729 | } | |
2730 | ||
2731 | if (remote_debug) | |
2732 | { | |
2733 | fprintf_unfiltered (gdb_stdlog, | |
2734 | "remote_set_syscall_catchpoint " | |
2735 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2736 | pid, needed, any_count, n_sysno); | |
2737 | } | |
2738 | ||
1b81856f | 2739 | std::string built_packet; |
82075af2 JS |
2740 | if (needed) |
2741 | { | |
2742 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2743 | characters for a sysno. If the resulting packet size is too | |
2744 | big, fallback on the non-selective packet. */ | |
2745 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2746 | built_packet.reserve (maxpktsz); |
2747 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2748 | if (any_count == 0) |
82075af2 | 2749 | { |
649a140c PA |
2750 | /* Add in each syscall to be caught. */ |
2751 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2752 | { |
649a140c PA |
2753 | if (syscall_counts[i] != 0) |
2754 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2755 | } |
2756 | } | |
1b81856f | 2757 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2758 | { |
2759 | /* catch_packet too big. Fallback to less efficient | |
2760 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2761 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2762 | } |
b80406ac | 2763 | else |
1b81856f | 2764 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2765 | } |
2766 | else | |
b80406ac | 2767 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2768 | |
b80406ac | 2769 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2770 | |
b80406ac | 2771 | putpkt (catch_packet); |
8d64371b | 2772 | getpkt (&rs->buf, 0); |
b80406ac TT |
2773 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); |
2774 | if (result == PACKET_OK) | |
2775 | return 0; | |
2776 | else | |
2777 | return -1; | |
82075af2 JS |
2778 | } |
2779 | ||
9b224c5e PA |
2780 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2781 | signals it should pass through to the inferior when detaching. */ | |
2782 | ||
f6ac5f3d | 2783 | void |
adc6a863 | 2784 | remote_target::program_signals (gdb::array_view<const unsigned char> signals) |
9b224c5e | 2785 | { |
4082afcc | 2786 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2787 | { |
2788 | char *packet, *p; | |
adc6a863 | 2789 | int count = 0; |
5e4a05c4 | 2790 | struct remote_state *rs = get_remote_state (); |
9b224c5e | 2791 | |
adc6a863 PA |
2792 | gdb_assert (signals.size () < 256); |
2793 | for (size_t i = 0; i < signals.size (); i++) | |
9b224c5e PA |
2794 | { |
2795 | if (signals[i]) | |
2796 | count++; | |
2797 | } | |
224c3ddb | 2798 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2799 | strcpy (packet, "QProgramSignals:"); |
2800 | p = packet + strlen (packet); | |
adc6a863 | 2801 | for (size_t i = 0; i < signals.size (); i++) |
9b224c5e PA |
2802 | { |
2803 | if (signal_pass_state (i)) | |
2804 | { | |
2805 | if (i >= 16) | |
2806 | *p++ = tohex (i >> 4); | |
2807 | *p++ = tohex (i & 15); | |
2808 | if (count) | |
2809 | *p++ = ';'; | |
2810 | else | |
2811 | break; | |
2812 | count--; | |
2813 | } | |
2814 | } | |
2815 | *p = 0; | |
5e4a05c4 TT |
2816 | if (!rs->last_program_signals_packet |
2817 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2818 | { |
9b224c5e | 2819 | putpkt (packet); |
8d64371b | 2820 | getpkt (&rs->buf, 0); |
8dc5b319 | 2821 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2822 | xfree (rs->last_program_signals_packet); |
2823 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2824 | } |
2825 | else | |
2826 | xfree (packet); | |
2827 | } | |
2828 | } | |
2829 | ||
79d7f229 PA |
2830 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2831 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2832 | thread. If GEN is set, set the general thread, if not, then set | |
2833 | the step/continue thread. */ | |
6b8edb51 PA |
2834 | void |
2835 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 2836 | { |
d01949b6 | 2837 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2838 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
8d64371b TT |
2839 | char *buf = rs->buf.data (); |
2840 | char *endbuf = buf + get_remote_packet_size (); | |
c906108c | 2841 | |
d7e15655 | 2842 | if (state == ptid) |
c906108c SS |
2843 | return; |
2844 | ||
79d7f229 PA |
2845 | *buf++ = 'H'; |
2846 | *buf++ = gen ? 'g' : 'c'; | |
d7e15655 | 2847 | if (ptid == magic_null_ptid) |
79d7f229 | 2848 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2849 | else if (ptid == any_thread_ptid) |
79d7f229 | 2850 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2851 | else if (ptid == minus_one_ptid) |
79d7f229 PA |
2852 | xsnprintf (buf, endbuf - buf, "-1"); |
2853 | else | |
82f73884 | 2854 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2855 | putpkt (rs->buf); |
8d64371b | 2856 | getpkt (&rs->buf, 0); |
c906108c | 2857 | if (gen) |
47f8a51d | 2858 | rs->general_thread = ptid; |
c906108c | 2859 | else |
47f8a51d | 2860 | rs->continue_thread = ptid; |
c906108c | 2861 | } |
79d7f229 | 2862 | |
6b8edb51 PA |
2863 | void |
2864 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
2865 | { |
2866 | set_thread (ptid, 1); | |
2867 | } | |
2868 | ||
6b8edb51 PA |
2869 | void |
2870 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
2871 | { |
2872 | set_thread (ptid, 0); | |
2873 | } | |
2874 | ||
3c9c4b83 PA |
2875 | /* Change the remote current process. Which thread within the process |
2876 | ends up selected isn't important, as long as it is the same process | |
2877 | as what INFERIOR_PTID points to. | |
2878 | ||
2879 | This comes from that fact that there is no explicit notion of | |
2880 | "selected process" in the protocol. The selected process for | |
2881 | general operations is the process the selected general thread | |
2882 | belongs to. */ | |
2883 | ||
6b8edb51 PA |
2884 | void |
2885 | remote_target::set_general_process () | |
3c9c4b83 PA |
2886 | { |
2887 | struct remote_state *rs = get_remote_state (); | |
2888 | ||
2889 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2890 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2891 | return; |
2892 | ||
2893 | /* We only need to change the remote current thread if it's pointing | |
2894 | at some other process. */ | |
e99b03dc | 2895 | if (rs->general_thread.pid () != inferior_ptid.pid ()) |
3c9c4b83 PA |
2896 | set_general_thread (inferior_ptid); |
2897 | } | |
2898 | ||
c906108c | 2899 | \f |
7d1a114c PA |
2900 | /* Return nonzero if this is the main thread that we made up ourselves |
2901 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2902 | |
2903 | static int | |
f6ac5f3d | 2904 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2905 | { |
d7e15655 | 2906 | if (ptid == magic_null_ptid) |
c0a2216e PA |
2907 | /* The main thread is always alive. */ |
2908 | return 1; | |
2909 | ||
e38504b3 | 2910 | if (ptid.pid () != 0 && ptid.lwp () == 0) |
c0a2216e PA |
2911 | /* The main thread is always alive. This can happen after a |
2912 | vAttach, if the remote side doesn't support | |
2913 | multi-threading. */ | |
2914 | return 1; | |
2915 | ||
7d1a114c PA |
2916 | return 0; |
2917 | } | |
2918 | ||
2919 | /* Return nonzero if the thread PTID is still alive on the remote | |
2920 | system. */ | |
2921 | ||
57810aa7 | 2922 | bool |
f6ac5f3d | 2923 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
2924 | { |
2925 | struct remote_state *rs = get_remote_state (); | |
2926 | char *p, *endp; | |
2927 | ||
2928 | /* Check if this is a thread that we made up ourselves to model | |
2929 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2930 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2931 | return 1; |
2932 | ||
8d64371b TT |
2933 | p = rs->buf.data (); |
2934 | endp = p + get_remote_packet_size (); | |
82f73884 PA |
2935 | |
2936 | *p++ = 'T'; | |
2937 | write_ptid (p, endp, ptid); | |
2938 | ||
2e9f7625 | 2939 | putpkt (rs->buf); |
8d64371b | 2940 | getpkt (&rs->buf, 0); |
2e9f7625 | 2941 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2942 | } |
2943 | ||
79efa585 SM |
2944 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2945 | The thread_info object owns the memory for the name. */ | |
2946 | ||
f6ac5f3d PA |
2947 | const char * |
2948 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
2949 | { |
2950 | if (info->priv != NULL) | |
a9334058 SM |
2951 | { |
2952 | const std::string &name = get_remote_thread_info (info)->name; | |
2953 | return !name.empty () ? name.c_str () : NULL; | |
2954 | } | |
79efa585 SM |
2955 | |
2956 | return NULL; | |
2957 | } | |
2958 | ||
c906108c SS |
2959 | /* About these extended threadlist and threadinfo packets. They are |
2960 | variable length packets but, the fields within them are often fixed | |
30baf67b | 2961 | length. They are redundant enough to send over UDP as is the |
c906108c SS |
2962 | remote protocol in general. There is a matching unit test module |
2963 | in libstub. */ | |
2964 | ||
23860348 | 2965 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2966 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2967 | changable. */ |
cce74817 JM |
2968 | |
2969 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2970 | Plan to fix this. */ |
cce74817 | 2971 | |
23860348 | 2972 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2973 | |
9d1f7ab2 | 2974 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2975 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2976 | |
2977 | struct gdb_ext_thread_info | |
c5aa993b | 2978 | { |
23860348 | 2979 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2980 | int active; /* Has state interesting to GDB? |
23860348 | 2981 | regs, stack. */ |
2bc416ba | 2982 | char display[256]; /* Brief state display, name, |
cedea757 | 2983 | blocked/suspended. */ |
23860348 | 2984 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2985 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2986 | whatever. */ |
c5aa993b | 2987 | }; |
cce74817 JM |
2988 | |
2989 | /* The volume of remote transfers can be limited by submitting | |
2990 | a mask containing bits specifying the desired information. | |
2991 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2992 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2993 | |
2994 | #define TAG_THREADID 1 | |
2995 | #define TAG_EXISTS 2 | |
2996 | #define TAG_DISPLAY 4 | |
2997 | #define TAG_THREADNAME 8 | |
c5aa993b | 2998 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2999 | |
23860348 | 3000 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 3001 | |
cecb1912 | 3002 | static const char *unpack_nibble (const char *buf, int *val); |
cce74817 | 3003 | |
cecb1912 | 3004 | static const char *unpack_byte (const char *buf, int *value); |
cce74817 | 3005 | |
a14ed312 | 3006 | static char *pack_int (char *buf, int value); |
cce74817 | 3007 | |
cecb1912 | 3008 | static const char *unpack_int (const char *buf, int *value); |
cce74817 | 3009 | |
cecb1912 | 3010 | static const char *unpack_string (const char *src, char *dest, int length); |
cce74817 | 3011 | |
23860348 | 3012 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 3013 | |
cecb1912 | 3014 | static const char *unpack_threadid (const char *inbuf, threadref *id); |
cce74817 | 3015 | |
23860348 | 3016 | void int_to_threadref (threadref *id, int value); |
cce74817 | 3017 | |
23860348 | 3018 | static int threadref_to_int (threadref *ref); |
cce74817 | 3019 | |
23860348 | 3020 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 3021 | |
23860348 | 3022 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 3023 | |
2bc416ba | 3024 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 3025 | threadref *id); |
cce74817 | 3026 | |
a14ed312 KB |
3027 | static char *pack_threadlist_request (char *pkt, int startflag, |
3028 | int threadcount, | |
23860348 | 3029 | threadref *nextthread); |
cce74817 | 3030 | |
23860348 | 3031 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 3032 | |
82f73884 PA |
3033 | |
3034 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
3035 | buffer we're allowed to write to. Returns | |
3036 | BUF+CHARACTERS_WRITTEN. */ | |
3037 | ||
6b8edb51 PA |
3038 | char * |
3039 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
3040 | { |
3041 | int pid, tid; | |
3042 | struct remote_state *rs = get_remote_state (); | |
3043 | ||
3044 | if (remote_multi_process_p (rs)) | |
3045 | { | |
e99b03dc | 3046 | pid = ptid.pid (); |
82f73884 PA |
3047 | if (pid < 0) |
3048 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
3049 | else | |
3050 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
3051 | } | |
e38504b3 | 3052 | tid = ptid.lwp (); |
82f73884 PA |
3053 | if (tid < 0) |
3054 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
3055 | else | |
3056 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
3057 | ||
3058 | return buf; | |
3059 | } | |
3060 | ||
256642e8 PA |
3061 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
3062 | last parsed char. Returns null_ptid if no thread id is found, and | |
3063 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
3064 | |
3065 | static ptid_t | |
256642e8 | 3066 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 3067 | { |
256642e8 PA |
3068 | const char *p = buf; |
3069 | const char *pp; | |
82f73884 | 3070 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
3071 | |
3072 | if (*p == 'p') | |
3073 | { | |
3074 | /* Multi-process ptid. */ | |
3075 | pp = unpack_varlen_hex (p + 1, &pid); | |
3076 | if (*pp != '.') | |
b37520b6 | 3077 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
3078 | |
3079 | p = pp; | |
3080 | pp = unpack_varlen_hex (p + 1, &tid); | |
3081 | if (obuf) | |
3082 | *obuf = pp; | |
fd79271b | 3083 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3084 | } |
3085 | ||
3086 | /* No multi-process. Just a tid. */ | |
3087 | pp = unpack_varlen_hex (p, &tid); | |
3088 | ||
c9f35b34 KB |
3089 | /* Return null_ptid when no thread id is found. */ |
3090 | if (p == pp) | |
3091 | { | |
3092 | if (obuf) | |
3093 | *obuf = pp; | |
3094 | return null_ptid; | |
3095 | } | |
3096 | ||
82f73884 | 3097 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
3098 | what's in inferior_ptid, unless it's null at this point. If so, |
3099 | then since there's no way to know the pid of the reported | |
3100 | threads, use the magic number. */ | |
d7e15655 | 3101 | if (inferior_ptid == null_ptid) |
e99b03dc | 3102 | pid = magic_null_ptid.pid (); |
ca19bf23 | 3103 | else |
e99b03dc | 3104 | pid = inferior_ptid.pid (); |
82f73884 PA |
3105 | |
3106 | if (obuf) | |
3107 | *obuf = pp; | |
fd79271b | 3108 | return ptid_t (pid, tid, 0); |
82f73884 PA |
3109 | } |
3110 | ||
c906108c | 3111 | static int |
fba45db2 | 3112 | stubhex (int ch) |
c906108c SS |
3113 | { |
3114 | if (ch >= 'a' && ch <= 'f') | |
3115 | return ch - 'a' + 10; | |
3116 | if (ch >= '0' && ch <= '9') | |
3117 | return ch - '0'; | |
3118 | if (ch >= 'A' && ch <= 'F') | |
3119 | return ch - 'A' + 10; | |
3120 | return -1; | |
3121 | } | |
3122 | ||
3123 | static int | |
cecb1912 | 3124 | stub_unpack_int (const char *buff, int fieldlength) |
c906108c SS |
3125 | { |
3126 | int nibble; | |
3127 | int retval = 0; | |
3128 | ||
3129 | while (fieldlength) | |
3130 | { | |
3131 | nibble = stubhex (*buff++); | |
3132 | retval |= nibble; | |
3133 | fieldlength--; | |
3134 | if (fieldlength) | |
3135 | retval = retval << 4; | |
3136 | } | |
3137 | return retval; | |
3138 | } | |
3139 | ||
cecb1912 SM |
3140 | static const char * |
3141 | unpack_nibble (const char *buf, int *val) | |
c906108c | 3142 | { |
b7589f7d | 3143 | *val = fromhex (*buf++); |
c906108c SS |
3144 | return buf; |
3145 | } | |
3146 | ||
cecb1912 SM |
3147 | static const char * |
3148 | unpack_byte (const char *buf, int *value) | |
c906108c SS |
3149 | { |
3150 | *value = stub_unpack_int (buf, 2); | |
3151 | return buf + 2; | |
3152 | } | |
3153 | ||
3154 | static char * | |
fba45db2 | 3155 | pack_int (char *buf, int value) |
c906108c SS |
3156 | { |
3157 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3158 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3159 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3160 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3161 | return buf; | |
3162 | } | |
3163 | ||
cecb1912 SM |
3164 | static const char * |
3165 | unpack_int (const char *buf, int *value) | |
c906108c SS |
3166 | { |
3167 | *value = stub_unpack_int (buf, 8); | |
3168 | return buf + 8; | |
3169 | } | |
3170 | ||
23860348 | 3171 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3172 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3173 | |
3174 | static char * | |
fba45db2 | 3175 | pack_string (char *pkt, char *string) |
c906108c SS |
3176 | { |
3177 | char ch; | |
3178 | int len; | |
3179 | ||
3180 | len = strlen (string); | |
3181 | if (len > 200) | |
23860348 | 3182 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3183 | pkt = pack_hex_byte (pkt, len); |
3184 | while (len-- > 0) | |
3185 | { | |
3186 | ch = *string++; | |
3187 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3188 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3189 | *pkt++ = ch; |
3190 | } | |
3191 | return pkt; | |
3192 | } | |
3193 | #endif /* 0 (unused) */ | |
3194 | ||
cecb1912 SM |
3195 | static const char * |
3196 | unpack_string (const char *src, char *dest, int length) | |
c906108c SS |
3197 | { |
3198 | while (length--) | |
3199 | *dest++ = *src++; | |
3200 | *dest = '\0'; | |
3201 | return src; | |
3202 | } | |
3203 | ||
3204 | static char * | |
fba45db2 | 3205 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3206 | { |
3207 | char *limit; | |
3208 | unsigned char *altid; | |
3209 | ||
3210 | altid = (unsigned char *) id; | |
3211 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3212 | while (pkt < limit) | |
3213 | pkt = pack_hex_byte (pkt, *altid++); | |
3214 | return pkt; | |
3215 | } | |
3216 | ||
3217 | ||
cecb1912 SM |
3218 | static const char * |
3219 | unpack_threadid (const char *inbuf, threadref *id) | |
c906108c SS |
3220 | { |
3221 | char *altref; | |
cecb1912 | 3222 | const char *limit = inbuf + BUF_THREAD_ID_SIZE; |
c906108c SS |
3223 | int x, y; |
3224 | ||
3225 | altref = (char *) id; | |
3226 | ||
3227 | while (inbuf < limit) | |
3228 | { | |
3229 | x = stubhex (*inbuf++); | |
3230 | y = stubhex (*inbuf++); | |
3231 | *altref++ = (x << 4) | y; | |
3232 | } | |
3233 | return inbuf; | |
3234 | } | |
3235 | ||
3236 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3237 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3238 | to use 64bit thread references internally. This is an adapter |
3239 | function. */ | |
3240 | ||
3241 | void | |
fba45db2 | 3242 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3243 | { |
3244 | unsigned char *scan; | |
3245 | ||
3246 | scan = (unsigned char *) id; | |
3247 | { | |
3248 | int i = 4; | |
3249 | while (i--) | |
3250 | *scan++ = 0; | |
3251 | } | |
3252 | *scan++ = (value >> 24) & 0xff; | |
3253 | *scan++ = (value >> 16) & 0xff; | |
3254 | *scan++ = (value >> 8) & 0xff; | |
3255 | *scan++ = (value & 0xff); | |
3256 | } | |
3257 | ||
3258 | static int | |
fba45db2 | 3259 | threadref_to_int (threadref *ref) |
c906108c SS |
3260 | { |
3261 | int i, value = 0; | |
3262 | unsigned char *scan; | |
3263 | ||
cfd77fa1 | 3264 | scan = *ref; |
c906108c SS |
3265 | scan += 4; |
3266 | i = 4; | |
3267 | while (i-- > 0) | |
3268 | value = (value << 8) | ((*scan++) & 0xff); | |
3269 | return value; | |
3270 | } | |
3271 | ||
3272 | static void | |
fba45db2 | 3273 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3274 | { |
3275 | int i; | |
3276 | unsigned char *csrc, *cdest; | |
3277 | ||
3278 | csrc = (unsigned char *) src; | |
3279 | cdest = (unsigned char *) dest; | |
3280 | i = 8; | |
3281 | while (i--) | |
3282 | *cdest++ = *csrc++; | |
3283 | } | |
3284 | ||
3285 | static int | |
fba45db2 | 3286 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3287 | { |
23860348 | 3288 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3289 | #if 0 |
3290 | unsigned char *srcp, *destp; | |
3291 | int i, result; | |
3292 | srcp = (char *) src; | |
3293 | destp = (char *) dest; | |
3294 | ||
3295 | result = 1; | |
3296 | while (i-- > 0) | |
3297 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3298 | return result; | |
3299 | #endif | |
3300 | return 1; | |
3301 | } | |
3302 | ||
3303 | /* | |
c5aa993b JM |
3304 | threadid:1, # always request threadid |
3305 | context_exists:2, | |
3306 | display:4, | |
3307 | unique_name:8, | |
3308 | more_display:16 | |
3309 | */ | |
c906108c SS |
3310 | |
3311 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3312 | ||
3313 | static char * | |
fba45db2 | 3314 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3315 | { |
23860348 MS |
3316 | *pkt++ = 'q'; /* Info Query */ |
3317 | *pkt++ = 'P'; /* process or thread info */ | |
3318 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3319 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3320 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3321 | return pkt; |
3322 | } | |
3323 | ||
23860348 | 3324 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3325 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3326 | add more fields as time goes by. */ |
c906108c | 3327 | |
23860348 | 3328 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3329 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3330 | fetch registers and its stack? */ |
c5aa993b | 3331 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3332 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3333 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3334 | the process. */ |
c906108c | 3335 | |
6b8edb51 | 3336 | int |
cecb1912 | 3337 | remote_target::remote_unpack_thread_info_response (const char *pkt, |
6b8edb51 PA |
3338 | threadref *expectedref, |
3339 | gdb_ext_thread_info *info) | |
c906108c | 3340 | { |
d01949b6 | 3341 | struct remote_state *rs = get_remote_state (); |
c906108c | 3342 | int mask, length; |
cfd77fa1 | 3343 | int tag; |
c906108c | 3344 | threadref ref; |
cecb1912 | 3345 | const char *limit = pkt + rs->buf.size (); /* Plausible parsing limit. */ |
c906108c SS |
3346 | int retval = 1; |
3347 | ||
23860348 | 3348 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3349 | info->active = 0; |
3350 | info->display[0] = '\0'; | |
3351 | info->shortname[0] = '\0'; | |
3352 | info->more_display[0] = '\0'; | |
3353 | ||
23860348 MS |
3354 | /* Assume the characters indicating the packet type have been |
3355 | stripped. */ | |
c906108c SS |
3356 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3357 | pkt = unpack_threadid (pkt, &ref); | |
3358 | ||
3359 | if (mask == 0) | |
8a3fe4f8 | 3360 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3361 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3362 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3363 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3364 | return 0; |
3365 | } | |
3366 | copy_threadref (&info->threadid, &ref); | |
3367 | ||
405feb71 | 3368 | /* Loop on tagged fields , try to bail if something goes wrong. */ |
c906108c | 3369 | |
23860348 MS |
3370 | /* Packets are terminated with nulls. */ |
3371 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3372 | { |
3373 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3374 | pkt = unpack_byte (pkt, &length); /* length */ |
3375 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3376 | { |
8a3fe4f8 | 3377 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3378 | retval = 0; |
3379 | break; | |
3380 | } | |
3381 | if (tag == TAG_THREADID) | |
3382 | { | |
3383 | if (length != 16) | |
3384 | { | |
8a3fe4f8 | 3385 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3386 | retval = 0; |
3387 | break; | |
3388 | } | |
3389 | pkt = unpack_threadid (pkt, &ref); | |
3390 | mask = mask & ~TAG_THREADID; | |
3391 | continue; | |
3392 | } | |
3393 | if (tag == TAG_EXISTS) | |
3394 | { | |
3395 | info->active = stub_unpack_int (pkt, length); | |
3396 | pkt += length; | |
3397 | mask = mask & ~(TAG_EXISTS); | |
3398 | if (length > 8) | |
3399 | { | |
8a3fe4f8 | 3400 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3401 | retval = 0; |
3402 | break; | |
3403 | } | |
3404 | continue; | |
3405 | } | |
3406 | if (tag == TAG_THREADNAME) | |
3407 | { | |
3408 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3409 | mask = mask & ~TAG_THREADNAME; | |
3410 | continue; | |
3411 | } | |
3412 | if (tag == TAG_DISPLAY) | |
3413 | { | |
3414 | pkt = unpack_string (pkt, &info->display[0], length); | |
3415 | mask = mask & ~TAG_DISPLAY; | |
3416 | continue; | |
3417 | } | |
3418 | if (tag == TAG_MOREDISPLAY) | |
3419 | { | |
3420 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3421 | mask = mask & ~TAG_MOREDISPLAY; | |
3422 | continue; | |
3423 | } | |
8a3fe4f8 | 3424 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3425 | break; /* Not a tag we know about. */ |
c906108c SS |
3426 | } |
3427 | return retval; | |
3428 | } | |
3429 | ||
6b8edb51 PA |
3430 | int |
3431 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3432 | int fieldset, | |
3433 | gdb_ext_thread_info *info) | |
c906108c | 3434 | { |
d01949b6 | 3435 | struct remote_state *rs = get_remote_state (); |
c906108c | 3436 | int result; |
c906108c | 3437 | |
8d64371b | 3438 | pack_threadinfo_request (rs->buf.data (), fieldset, threadid); |
2e9f7625 | 3439 | putpkt (rs->buf); |
8d64371b | 3440 | getpkt (&rs->buf, 0); |
3084dd77 PA |
3441 | |
3442 | if (rs->buf[0] == '\0') | |
3443 | return 0; | |
3444 | ||
8d64371b | 3445 | result = remote_unpack_thread_info_response (&rs->buf[2], |
23860348 | 3446 | threadid, info); |
c906108c SS |
3447 | return result; |
3448 | } | |
3449 | ||
c906108c SS |
3450 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3451 | ||
3452 | static char * | |
fba45db2 KB |
3453 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3454 | threadref *nextthread) | |
c906108c SS |
3455 | { |
3456 | *pkt++ = 'q'; /* info query packet */ | |
3457 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3458 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3459 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3460 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3461 | *pkt = '\0'; | |
3462 | return pkt; | |
3463 | } | |
3464 | ||
3465 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3466 | ||
6b8edb51 | 3467 | int |
cecb1912 | 3468 | remote_target::parse_threadlist_response (const char *pkt, int result_limit, |
6b8edb51 PA |
3469 | threadref *original_echo, |
3470 | threadref *resultlist, | |
3471 | int *doneflag) | |
c906108c | 3472 | { |
d01949b6 | 3473 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3474 | int count, resultcount, done; |
3475 | ||
3476 | resultcount = 0; | |
3477 | /* Assume the 'q' and 'M chars have been stripped. */ | |
cecb1912 | 3478 | const char *limit = pkt + (rs->buf.size () - BUF_THREAD_ID_SIZE); |
23860348 | 3479 | /* done parse past here */ |
c906108c SS |
3480 | pkt = unpack_byte (pkt, &count); /* count field */ |
3481 | pkt = unpack_nibble (pkt, &done); | |
3482 | /* The first threadid is the argument threadid. */ | |
3483 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3484 | while ((count-- > 0) && (pkt < limit)) | |
3485 | { | |
3486 | pkt = unpack_threadid (pkt, resultlist++); | |
3487 | if (resultcount++ >= result_limit) | |
3488 | break; | |
3489 | } | |
3490 | if (doneflag) | |
3491 | *doneflag = done; | |
3492 | return resultcount; | |
3493 | } | |
3494 | ||
6dc54d91 PA |
3495 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3496 | qL packet is not supported, 0 on error and 1 on success. */ | |
3497 | ||
6b8edb51 PA |
3498 | int |
3499 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3500 | int result_limit, int *done, int *result_count, | |
3501 | threadref *threadlist) | |
c906108c | 3502 | { |
d01949b6 | 3503 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3504 | int result = 1; |
3505 | ||
405feb71 | 3506 | /* Truncate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3507 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3508 | >= get_remote_packet_size ()) | |
ea9c271d | 3509 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3510 | |
8d64371b TT |
3511 | pack_threadlist_request (rs->buf.data (), startflag, result_limit, |
3512 | nextthread); | |
6d820c5c | 3513 | putpkt (rs->buf); |
8d64371b TT |
3514 | getpkt (&rs->buf, 0); |
3515 | if (rs->buf[0] == '\0') | |
6dc54d91 PA |
3516 | { |
3517 | /* Packet not supported. */ | |
3518 | return -1; | |
3519 | } | |
3520 | ||
3521 | *result_count = | |
8d64371b | 3522 | parse_threadlist_response (&rs->buf[2], result_limit, |
6dc54d91 | 3523 | &rs->echo_nextthread, threadlist, done); |
c906108c | 3524 | |
0d031856 | 3525 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3526 | { |
23860348 | 3527 | /* FIXME: This is a good reason to drop the packet. */ |
405feb71 TV |
3528 | /* Possibly, there is a duplicate response. */ |
3529 | /* Possibilities : | |
dda83cd7 SM |
3530 | retransmit immediatly - race conditions |
3531 | retransmit after timeout - yes | |
3532 | exit | |
3533 | wait for packet, then exit | |
c906108c | 3534 | */ |
8a3fe4f8 | 3535 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3536 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3537 | } |
3538 | if (*result_count <= 0) | |
3539 | { | |
3540 | if (*done != 1) | |
3541 | { | |
8a3fe4f8 | 3542 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3543 | result = 0; |
3544 | } | |
3545 | return result; /* break; */ | |
3546 | } | |
3547 | if (*result_count > result_limit) | |
3548 | { | |
3549 | *result_count = 0; | |
8a3fe4f8 | 3550 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3551 | return 0; |
3552 | } | |
3553 | return result; | |
3554 | } | |
3555 | ||
6dc54d91 PA |
3556 | /* Fetch the list of remote threads, with the qL packet, and call |
3557 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3558 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3559 | STEPFUNCTION returns false. If the packet is not supported, | |
3560 | returns -1. */ | |
c906108c | 3561 | |
6b8edb51 PA |
3562 | int |
3563 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3564 | void *context, int looplimit) | |
c906108c | 3565 | { |
0d031856 | 3566 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3567 | int done, i, result_count; |
3568 | int startflag = 1; | |
3569 | int result = 1; | |
3570 | int loopcount = 0; | |
c906108c SS |
3571 | |
3572 | done = 0; | |
3573 | while (!done) | |
3574 | { | |
3575 | if (loopcount++ > looplimit) | |
3576 | { | |
3577 | result = 0; | |
8a3fe4f8 | 3578 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3579 | break; |
3580 | } | |
6dc54d91 PA |
3581 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3582 | MAXTHREADLISTRESULTS, | |
3583 | &done, &result_count, | |
3584 | rs->resultthreadlist); | |
3585 | if (result <= 0) | |
3586 | break; | |
23860348 | 3587 | /* Clear for later iterations. */ |
c906108c SS |
3588 | startflag = 0; |
3589 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3590 | if (result_count >= 1) | |
0d031856 TT |
3591 | copy_threadref (&rs->nextthread, |
3592 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3593 | i = 0; |
3594 | while (result_count--) | |
6dc54d91 PA |
3595 | { |
3596 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3597 | { | |
3598 | result = 0; | |
3599 | break; | |
3600 | } | |
3601 | } | |
c906108c SS |
3602 | } |
3603 | return result; | |
3604 | } | |
3605 | ||
6dc54d91 PA |
3606 | /* A thread found on the remote target. */ |
3607 | ||
21fe1c75 | 3608 | struct thread_item |
6dc54d91 | 3609 | { |
21fe1c75 SM |
3610 | explicit thread_item (ptid_t ptid_) |
3611 | : ptid (ptid_) | |
3612 | {} | |
3613 | ||
3614 | thread_item (thread_item &&other) = default; | |
3615 | thread_item &operator= (thread_item &&other) = default; | |
3616 | ||
3617 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3618 | ||
6dc54d91 PA |
3619 | /* The thread's PTID. */ |
3620 | ptid_t ptid; | |
3621 | ||
21fe1c75 SM |
3622 | /* The thread's extra info. */ |
3623 | std::string extra; | |
6dc54d91 | 3624 | |
21fe1c75 SM |
3625 | /* The thread's name. */ |
3626 | std::string name; | |
79efa585 | 3627 | |
6dc54d91 | 3628 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3629 | int core = -1; |
f6327dcb KB |
3630 | |
3631 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3632 | gdb::byte_vector thread_handle; |
21fe1c75 | 3633 | }; |
6dc54d91 PA |
3634 | |
3635 | /* Context passed around to the various methods listing remote | |
3636 | threads. As new threads are found, they're added to the ITEMS | |
3637 | vector. */ | |
3638 | ||
3639 | struct threads_listing_context | |
3640 | { | |
21fe1c75 SM |
3641 | /* Return true if this object contains an entry for a thread with ptid |
3642 | PTID. */ | |
6dc54d91 | 3643 | |
21fe1c75 SM |
3644 | bool contains_thread (ptid_t ptid) const |
3645 | { | |
3646 | auto match_ptid = [&] (const thread_item &item) | |
3647 | { | |
3648 | return item.ptid == ptid; | |
3649 | }; | |
80134cf5 | 3650 | |
21fe1c75 SM |
3651 | auto it = std::find_if (this->items.begin (), |
3652 | this->items.end (), | |
3653 | match_ptid); | |
80134cf5 | 3654 | |
21fe1c75 SM |
3655 | return it != this->items.end (); |
3656 | } | |
80134cf5 | 3657 | |
21fe1c75 | 3658 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3659 | |
21fe1c75 SM |
3660 | void remove_thread (ptid_t ptid) |
3661 | { | |
3662 | auto match_ptid = [&] (const thread_item &item) | |
3663 | { | |
dda83cd7 | 3664 | return item.ptid == ptid; |
21fe1c75 | 3665 | }; |
cbb8991c | 3666 | |
21fe1c75 SM |
3667 | auto it = std::remove_if (this->items.begin (), |
3668 | this->items.end (), | |
3669 | match_ptid); | |
cbb8991c | 3670 | |
21fe1c75 SM |
3671 | if (it != this->items.end ()) |
3672 | this->items.erase (it); | |
3673 | } | |
3674 | ||
3675 | /* The threads found on the remote target. */ | |
3676 | std::vector<thread_item> items; | |
3677 | }; | |
cbb8991c | 3678 | |
c906108c | 3679 | static int |
6dc54d91 | 3680 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3681 | { |
19ba03f4 SM |
3682 | struct threads_listing_context *context |
3683 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3684 | int pid = inferior_ptid.pid (); |
3685 | int lwp = threadref_to_int (ref); | |
3686 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3687 | |
21fe1c75 | 3688 | context->items.emplace_back (ptid); |
6dc54d91 | 3689 | |
c906108c SS |
3690 | return 1; /* continue iterator */ |
3691 | } | |
3692 | ||
3693 | #define CRAZY_MAX_THREADS 1000 | |
3694 | ||
6b8edb51 PA |
3695 | ptid_t |
3696 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3697 | { |
d01949b6 | 3698 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3699 | |
3700 | putpkt ("qC"); | |
8d64371b | 3701 | getpkt (&rs->buf, 0); |
2e9f7625 | 3702 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3703 | { |
256642e8 | 3704 | const char *obuf; |
c9f35b34 KB |
3705 | ptid_t result; |
3706 | ||
3707 | result = read_ptid (&rs->buf[2], &obuf); | |
3708 | if (*obuf != '\0' && remote_debug) | |
dda83cd7 SM |
3709 | fprintf_unfiltered (gdb_stdlog, |
3710 | "warning: garbage in qC reply\n"); | |
c9f35b34 KB |
3711 | |
3712 | return result; | |
3713 | } | |
c906108c SS |
3714 | else |
3715 | return oldpid; | |
3716 | } | |
3717 | ||
6dc54d91 | 3718 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3719 | |
6b8edb51 PA |
3720 | int |
3721 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3722 | { |
6dc54d91 PA |
3723 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3724 | CRAZY_MAX_THREADS) >= 0) | |
3725 | return 1; | |
3726 | ||
3727 | return 0; | |
c906108c SS |
3728 | } |
3729 | ||
dc146f7c VP |
3730 | #if defined(HAVE_LIBEXPAT) |
3731 | ||
dc146f7c VP |
3732 | static void |
3733 | start_thread (struct gdb_xml_parser *parser, | |
3734 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3735 | void *user_data, |
3736 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3737 | { |
19ba03f4 SM |
3738 | struct threads_listing_context *data |
3739 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3740 | struct gdb_xml_value *attr; |
dc146f7c | 3741 | |
4d0fdd9b | 3742 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3743 | ptid_t ptid = read_ptid (id, NULL); |
3744 | ||
3745 | data->items.emplace_back (ptid); | |
3746 | thread_item &item = data->items.back (); | |
dc146f7c | 3747 | |
3d2c1d41 PA |
3748 | attr = xml_find_attribute (attributes, "core"); |
3749 | if (attr != NULL) | |
4d0fdd9b | 3750 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3751 | |
79efa585 | 3752 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3753 | if (attr != NULL) |
4d0fdd9b | 3754 | item.name = (const char *) attr->value.get (); |
79efa585 | 3755 | |
f6327dcb KB |
3756 | attr = xml_find_attribute (attributes, "handle"); |
3757 | if (attr != NULL) | |
4d0fdd9b | 3758 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3759 | } |
3760 | ||
3761 | static void | |
3762 | end_thread (struct gdb_xml_parser *parser, | |
3763 | const struct gdb_xml_element *element, | |
3764 | void *user_data, const char *body_text) | |
3765 | { | |
19ba03f4 SM |
3766 | struct threads_listing_context *data |
3767 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3768 | |
21fe1c75 SM |
3769 | if (body_text != NULL && *body_text != '\0') |
3770 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3771 | } |
3772 | ||
3773 | const struct gdb_xml_attribute thread_attributes[] = { | |
3774 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3775 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3776 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3777 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3778 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3779 | }; | |
3780 | ||
3781 | const struct gdb_xml_element thread_children[] = { | |
3782 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3783 | }; | |
3784 | ||
3785 | const struct gdb_xml_element threads_children[] = { | |
3786 | { "thread", thread_attributes, thread_children, | |
3787 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3788 | start_thread, end_thread }, | |
3789 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3790 | }; | |
3791 | ||
3792 | const struct gdb_xml_element threads_elements[] = { | |
3793 | { "threads", NULL, threads_children, | |
3794 | GDB_XML_EF_NONE, NULL, NULL }, | |
3795 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3796 | }; | |
3797 | ||
3798 | #endif | |
3799 | ||
6dc54d91 | 3800 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3801 | |
6b8edb51 PA |
3802 | int |
3803 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 3804 | { |
dc146f7c | 3805 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3806 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3807 | { |
9018be22 | 3808 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 3809 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3810 | |
9018be22 | 3811 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3812 | { |
6dc54d91 | 3813 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3814 | threads_elements, xml->data (), context); |
dc146f7c VP |
3815 | } |
3816 | ||
6dc54d91 | 3817 | return 1; |
dc146f7c VP |
3818 | } |
3819 | #endif | |
3820 | ||
6dc54d91 PA |
3821 | return 0; |
3822 | } | |
3823 | ||
3824 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3825 | ||
6b8edb51 PA |
3826 | int |
3827 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
3828 | { |
3829 | struct remote_state *rs = get_remote_state (); | |
3830 | ||
b80fafe3 | 3831 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3832 | { |
256642e8 | 3833 | const char *bufp; |
6dc54d91 | 3834 | |
9d1f7ab2 | 3835 | putpkt ("qfThreadInfo"); |
8d64371b TT |
3836 | getpkt (&rs->buf, 0); |
3837 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3838 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3839 | { |
9d1f7ab2 MS |
3840 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3841 | { | |
3842 | do | |
3843 | { | |
21fe1c75 SM |
3844 | ptid_t ptid = read_ptid (bufp, &bufp); |
3845 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3846 | } |
3847 | while (*bufp++ == ','); /* comma-separated list */ | |
3848 | putpkt ("qsThreadInfo"); | |
8d64371b TT |
3849 | getpkt (&rs->buf, 0); |
3850 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3851 | } |
6dc54d91 PA |
3852 | return 1; |
3853 | } | |
3854 | else | |
3855 | { | |
3856 | /* Packet not recognized. */ | |
3857 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3858 | } |
3859 | } | |
3860 | ||
6dc54d91 PA |
3861 | return 0; |
3862 | } | |
3863 | ||
a05575d3 TBA |
3864 | /* Return true if INF only has one non-exited thread. */ |
3865 | ||
3866 | static bool | |
3867 | has_single_non_exited_thread (inferior *inf) | |
3868 | { | |
3869 | int count = 0; | |
3870 | for (thread_info *tp ATTRIBUTE_UNUSED : inf->non_exited_threads ()) | |
3871 | if (++count > 1) | |
3872 | break; | |
3873 | return count == 1; | |
3874 | } | |
3875 | ||
e8032dde | 3876 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3877 | targets. */ |
3878 | ||
f6ac5f3d PA |
3879 | void |
3880 | remote_target::update_thread_list () | |
6dc54d91 | 3881 | { |
6dc54d91 | 3882 | struct threads_listing_context context; |
ab970af1 | 3883 | int got_list = 0; |
e8032dde | 3884 | |
6dc54d91 PA |
3885 | /* We have a few different mechanisms to fetch the thread list. Try |
3886 | them all, starting with the most preferred one first, falling | |
3887 | back to older methods. */ | |
6b8edb51 PA |
3888 | if (remote_get_threads_with_qxfer (&context) |
3889 | || remote_get_threads_with_qthreadinfo (&context) | |
3890 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 3891 | { |
ab970af1 PA |
3892 | got_list = 1; |
3893 | ||
21fe1c75 | 3894 | if (context.items.empty () |
f6ac5f3d | 3895 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3896 | { |
3897 | /* Some targets don't really support threads, but still | |
3898 | reply an (empty) thread list in response to the thread | |
3899 | listing packets, instead of replying "packet not | |
3900 | supported". Exit early so we don't delete the main | |
3901 | thread. */ | |
7d1a114c PA |
3902 | return; |
3903 | } | |
3904 | ||
ab970af1 PA |
3905 | /* CONTEXT now holds the current thread list on the remote |
3906 | target end. Delete GDB-side threads no longer found on the | |
3907 | target. */ | |
08036331 | 3908 | for (thread_info *tp : all_threads_safe ()) |
cbb8991c | 3909 | { |
5b6d1e4f PA |
3910 | if (tp->inf->process_target () != this) |
3911 | continue; | |
3912 | ||
21fe1c75 | 3913 | if (!context.contains_thread (tp->ptid)) |
ab970af1 | 3914 | { |
a05575d3 TBA |
3915 | /* Do not remove the thread if it is the last thread in |
3916 | the inferior. This situation happens when we have a | |
3917 | pending exit process status to process. Otherwise we | |
3918 | may end up with a seemingly live inferior (i.e. pid | |
3919 | != 0) that has no threads. */ | |
3920 | if (has_single_non_exited_thread (tp->inf)) | |
3921 | continue; | |
3922 | ||
ab970af1 | 3923 | /* Not found. */ |
00431a78 | 3924 | delete_thread (tp); |
ab970af1 | 3925 | } |
cbb8991c DB |
3926 | } |
3927 | ||
3928 | /* Remove any unreported fork child threads from CONTEXT so | |
3929 | that we don't interfere with follow fork, which is where | |
3930 | creation of such threads is handled. */ | |
3931 | remove_new_fork_children (&context); | |
74531fed | 3932 | |
ab970af1 | 3933 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3934 | for (thread_item &item : context.items) |
6dc54d91 | 3935 | { |
21fe1c75 | 3936 | if (item.ptid != null_ptid) |
6dc54d91 | 3937 | { |
6dc54d91 | 3938 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3939 | executing until proven otherwise with a stop reply. |
3940 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3941 | stopped. */ |
0d5b594f | 3942 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3943 | |
21fe1c75 | 3944 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3945 | |
5b6d1e4f | 3946 | thread_info *tp = find_thread_ptid (this, item.ptid); |
00431a78 | 3947 | remote_thread_info *info = get_remote_thread_info (tp); |
21fe1c75 | 3948 | info->core = item.core; |
7aabaf9d SM |
3949 | info->extra = std::move (item.extra); |
3950 | info->name = std::move (item.name); | |
3951 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3952 | } |
3953 | } | |
3954 | } | |
3955 | ||
ab970af1 PA |
3956 | if (!got_list) |
3957 | { | |
3958 | /* If no thread listing method is supported, then query whether | |
3959 | each known thread is alive, one by one, with the T packet. | |
3960 | If the target doesn't support threads at all, then this is a | |
3961 | no-op. See remote_thread_alive. */ | |
3962 | prune_threads (); | |
3963 | } | |
9d1f7ab2 MS |
3964 | } |
3965 | ||
802188a7 | 3966 | /* |
9d1f7ab2 MS |
3967 | * Collect a descriptive string about the given thread. |
3968 | * The target may say anything it wants to about the thread | |
3969 | * (typically info about its blocked / runnable state, name, etc.). | |
3970 | * This string will appear in the info threads display. | |
802188a7 | 3971 | * |
9d1f7ab2 MS |
3972 | * Optional: targets are not required to implement this function. |
3973 | */ | |
3974 | ||
f6ac5f3d PA |
3975 | const char * |
3976 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 3977 | { |
d01949b6 | 3978 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3979 | int set; |
3980 | threadref id; | |
3981 | struct gdb_ext_thread_info threadinfo; | |
9d1f7ab2 | 3982 | |
5d93a237 | 3983 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3984 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3985 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3986 | |
d7e15655 | 3987 | if (tp->ptid == magic_null_ptid |
e38504b3 | 3988 | || (tp->ptid.pid () != 0 && tp->ptid.lwp () == 0)) |
60e569b9 PA |
3989 | /* This is the main thread which was added by GDB. The remote |
3990 | server doesn't know about it. */ | |
3991 | return NULL; | |
3992 | ||
c76a8ea3 PA |
3993 | std::string &extra = get_remote_thread_info (tp)->extra; |
3994 | ||
3995 | /* If already have cached info, use it. */ | |
3996 | if (!extra.empty ()) | |
3997 | return extra.c_str (); | |
3998 | ||
4082afcc | 3999 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 4000 | { |
c76a8ea3 PA |
4001 | /* If we're using qXfer:threads:read, then the extra info is |
4002 | included in the XML. So if we didn't have anything cached, | |
4003 | it's because there's really no extra info. */ | |
4004 | return NULL; | |
dc146f7c VP |
4005 | } |
4006 | ||
b80fafe3 | 4007 | if (rs->use_threadextra_query) |
9d1f7ab2 | 4008 | { |
8d64371b TT |
4009 | char *b = rs->buf.data (); |
4010 | char *endb = b + get_remote_packet_size (); | |
82f73884 PA |
4011 | |
4012 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
4013 | b += strlen (b); | |
4014 | write_ptid (b, endb, tp->ptid); | |
4015 | ||
2e9f7625 | 4016 | putpkt (rs->buf); |
8d64371b | 4017 | getpkt (&rs->buf, 0); |
2e9f7625 | 4018 | if (rs->buf[0] != 0) |
9d1f7ab2 | 4019 | { |
8d64371b TT |
4020 | extra.resize (strlen (rs->buf.data ()) / 2); |
4021 | hex2bin (rs->buf.data (), (gdb_byte *) &extra[0], extra.size ()); | |
c76a8ea3 | 4022 | return extra.c_str (); |
9d1f7ab2 | 4023 | } |
0f71a2f6 | 4024 | } |
9d1f7ab2 MS |
4025 | |
4026 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 4027 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
4028 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
4029 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
e38504b3 | 4030 | int_to_threadref (&id, tp->ptid.lwp ()); |
9d1f7ab2 MS |
4031 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
4032 | if (threadinfo.active) | |
0f71a2f6 | 4033 | { |
9d1f7ab2 | 4034 | if (*threadinfo.shortname) |
c76a8ea3 | 4035 | string_appendf (extra, " Name: %s", threadinfo.shortname); |
9d1f7ab2 | 4036 | if (*threadinfo.display) |
c76a8ea3 PA |
4037 | { |
4038 | if (!extra.empty ()) | |
4039 | extra += ','; | |
4040 | string_appendf (extra, " State: %s", threadinfo.display); | |
4041 | } | |
9d1f7ab2 | 4042 | if (*threadinfo.more_display) |
c5aa993b | 4043 | { |
c76a8ea3 PA |
4044 | if (!extra.empty ()) |
4045 | extra += ','; | |
4046 | string_appendf (extra, " Priority: %s", threadinfo.more_display); | |
c5aa993b | 4047 | } |
c76a8ea3 | 4048 | return extra.c_str (); |
0f71a2f6 | 4049 | } |
9d1f7ab2 | 4050 | return NULL; |
0f71a2f6 | 4051 | } |
c906108c | 4052 | \f |
c5aa993b | 4053 | |
f6ac5f3d PA |
4054 | bool |
4055 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
4056 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
4057 | { |
4058 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 4059 | char *p = rs->buf.data (); |
0fb4aa4b | 4060 | |
bba74b36 | 4061 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
4062 | p += strlen (p); |
4063 | p += hexnumstr (p, addr); | |
4064 | putpkt (rs->buf); | |
8d64371b TT |
4065 | getpkt (&rs->buf, 0); |
4066 | p = rs->buf.data (); | |
0fb4aa4b PA |
4067 | |
4068 | if (*p == 'E') | |
4069 | error (_("Remote failure reply: %s"), p); | |
4070 | ||
4071 | if (*p++ == 'm') | |
4072 | { | |
256642e8 | 4073 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 4074 | return true; |
0fb4aa4b PA |
4075 | } |
4076 | ||
5d9310c4 | 4077 | return false; |
0fb4aa4b PA |
4078 | } |
4079 | ||
f6ac5f3d PA |
4080 | std::vector<static_tracepoint_marker> |
4081 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
4082 | { |
4083 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 4084 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 4085 | const char *p; |
5d9310c4 | 4086 | static_tracepoint_marker marker; |
0fb4aa4b PA |
4087 | |
4088 | /* Ask for a first packet of static tracepoint marker | |
4089 | definition. */ | |
4090 | putpkt ("qTfSTM"); | |
8d64371b TT |
4091 | getpkt (&rs->buf, 0); |
4092 | p = rs->buf.data (); | |
0fb4aa4b PA |
4093 | if (*p == 'E') |
4094 | error (_("Remote failure reply: %s"), p); | |
4095 | ||
0fb4aa4b PA |
4096 | while (*p++ == 'm') |
4097 | { | |
0fb4aa4b PA |
4098 | do |
4099 | { | |
5d9310c4 | 4100 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 4101 | |
5d9310c4 SM |
4102 | if (strid == NULL || marker.str_id == strid) |
4103 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
4104 | } |
4105 | while (*p++ == ','); /* comma-separated list */ | |
4106 | /* Ask for another packet of static tracepoint definition. */ | |
4107 | putpkt ("qTsSTM"); | |
8d64371b TT |
4108 | getpkt (&rs->buf, 0); |
4109 | p = rs->buf.data (); | |
0fb4aa4b PA |
4110 | } |
4111 | ||
0fb4aa4b PA |
4112 | return markers; |
4113 | } | |
4114 | ||
4115 | \f | |
10760264 JB |
4116 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
4117 | ||
f6ac5f3d PA |
4118 | ptid_t |
4119 | remote_target::get_ada_task_ptid (long lwp, long thread) | |
10760264 | 4120 | { |
e99b03dc | 4121 | return ptid_t (inferior_ptid.pid (), lwp, 0); |
10760264 JB |
4122 | } |
4123 | \f | |
4124 | ||
24b06219 | 4125 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 4126 | |
6b8edb51 PA |
4127 | void |
4128 | remote_target::extended_remote_restart () | |
c906108c | 4129 | { |
d01949b6 | 4130 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
4131 | |
4132 | /* Send the restart command; for reasons I don't understand the | |
4133 | remote side really expects a number after the "R". */ | |
8d64371b | 4134 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "R%x", 0); |
6d820c5c | 4135 | putpkt (rs->buf); |
c906108c | 4136 | |
ad9a8f3f | 4137 | remote_fileio_reset (); |
c906108c SS |
4138 | } |
4139 | \f | |
4140 | /* Clean up connection to a remote debugger. */ | |
4141 | ||
f6ac5f3d PA |
4142 | void |
4143 | remote_target::close () | |
c906108c | 4144 | { |
048094ac | 4145 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4146 | terminal_ours (); |
ce5ce7ed | 4147 | |
6b8edb51 PA |
4148 | trace_reset_local_state (); |
4149 | ||
4150 | delete this; | |
4151 | } | |
4152 | ||
4153 | remote_target::~remote_target () | |
4154 | { | |
4155 | struct remote_state *rs = get_remote_state (); | |
4156 | ||
4157 | /* Check for NULL because we may get here with a partially | |
4158 | constructed target/connection. */ | |
4159 | if (rs->remote_desc == nullptr) | |
4160 | return; | |
4161 | ||
4162 | serial_close (rs->remote_desc); | |
4163 | ||
4164 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4165 | everything of this target. */ |
6b8edb51 | 4166 | discard_pending_stop_replies_in_queue (); |
74531fed | 4167 | |
6b8edb51 PA |
4168 | if (rs->remote_async_inferior_event_token) |
4169 | delete_async_event_handler (&rs->remote_async_inferior_event_token); | |
722247f1 | 4170 | |
97dfbadd | 4171 | delete rs->notif_state; |
c906108c SS |
4172 | } |
4173 | ||
23860348 | 4174 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4175 | |
6b8edb51 PA |
4176 | void |
4177 | remote_target::get_offsets () | |
c906108c | 4178 | { |
d01949b6 | 4179 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4180 | char *buf; |
085dd6e6 | 4181 | char *ptr; |
31d99776 DJ |
4182 | int lose, num_segments = 0, do_sections, do_segments; |
4183 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
31d99776 | 4184 | |
a42d7dd8 | 4185 | if (current_program_space->symfile_object_file == NULL) |
31d99776 | 4186 | return; |
c906108c SS |
4187 | |
4188 | putpkt ("qOffsets"); | |
8d64371b TT |
4189 | getpkt (&rs->buf, 0); |
4190 | buf = rs->buf.data (); | |
c906108c SS |
4191 | |
4192 | if (buf[0] == '\000') | |
4193 | return; /* Return silently. Stub doesn't support | |
23860348 | 4194 | this command. */ |
c906108c SS |
4195 | if (buf[0] == 'E') |
4196 | { | |
8a3fe4f8 | 4197 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4198 | return; |
4199 | } | |
4200 | ||
4201 | /* Pick up each field in turn. This used to be done with scanf, but | |
4202 | scanf will make trouble if CORE_ADDR size doesn't match | |
4203 | conversion directives correctly. The following code will work | |
4204 | with any size of CORE_ADDR. */ | |
4205 | text_addr = data_addr = bss_addr = 0; | |
4206 | ptr = buf; | |
4207 | lose = 0; | |
4208 | ||
61012eef | 4209 | if (startswith (ptr, "Text=")) |
c906108c SS |
4210 | { |
4211 | ptr += 5; | |
4212 | /* Don't use strtol, could lose on big values. */ | |
4213 | while (*ptr && *ptr != ';') | |
4214 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4215 | |
61012eef | 4216 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4217 | { |
4218 | ptr += 6; | |
4219 | while (*ptr && *ptr != ';') | |
4220 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4221 | } | |
4222 | else | |
4223 | lose = 1; | |
4224 | ||
61012eef | 4225 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4226 | { |
4227 | ptr += 5; | |
4228 | while (*ptr && *ptr != ';') | |
4229 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4230 | |
31d99776 DJ |
4231 | if (bss_addr != data_addr) |
4232 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4233 | } | |
4234 | else | |
4235 | lose = 1; | |
4236 | } | |
61012eef | 4237 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4238 | { |
31d99776 DJ |
4239 | ptr += 8; |
4240 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4241 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4242 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4243 | num_segments = 1; | |
4244 | ||
61012eef | 4245 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4246 | { |
4247 | ptr += 9; | |
4248 | while (*ptr && *ptr != ';') | |
4249 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4250 | num_segments++; | |
4251 | } | |
c906108c SS |
4252 | } |
4253 | else | |
4254 | lose = 1; | |
4255 | ||
4256 | if (lose) | |
8a3fe4f8 | 4257 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4258 | else if (*ptr != '\0') |
4259 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4260 | |
a42d7dd8 TT |
4261 | objfile *objf = current_program_space->symfile_object_file; |
4262 | section_offsets offs = objf->section_offsets; | |
c906108c | 4263 | |
a42d7dd8 | 4264 | symfile_segment_data_up data = get_symfile_segment_data (objf->obfd); |
31d99776 DJ |
4265 | do_segments = (data != NULL); |
4266 | do_sections = num_segments == 0; | |
c906108c | 4267 | |
28c32713 | 4268 | if (num_segments > 0) |
31d99776 | 4269 | { |
31d99776 DJ |
4270 | segments[0] = text_addr; |
4271 | segments[1] = data_addr; | |
4272 | } | |
28c32713 JB |
4273 | /* If we have two segments, we can still try to relocate everything |
4274 | by assuming that the .text and .data offsets apply to the whole | |
4275 | text and data segments. Convert the offsets given in the packet | |
4276 | to base addresses for symfile_map_offsets_to_segments. */ | |
68b888ff | 4277 | else if (data != nullptr && data->segments.size () == 2) |
28c32713 | 4278 | { |
68b888ff SM |
4279 | segments[0] = data->segments[0].base + text_addr; |
4280 | segments[1] = data->segments[1].base + data_addr; | |
28c32713 JB |
4281 | num_segments = 2; |
4282 | } | |
8d385431 DJ |
4283 | /* If the object file has only one segment, assume that it is text |
4284 | rather than data; main programs with no writable data are rare, | |
4285 | but programs with no code are useless. Of course the code might | |
4286 | have ended up in the data segment... to detect that we would need | |
4287 | the permissions here. */ | |
68b888ff | 4288 | else if (data && data->segments.size () == 1) |
8d385431 | 4289 | { |
68b888ff | 4290 | segments[0] = data->segments[0].base + text_addr; |
8d385431 DJ |
4291 | num_segments = 1; |
4292 | } | |
28c32713 JB |
4293 | /* There's no way to relocate by segment. */ |
4294 | else | |
4295 | do_segments = 0; | |
31d99776 DJ |
4296 | |
4297 | if (do_segments) | |
4298 | { | |
a42d7dd8 | 4299 | int ret = symfile_map_offsets_to_segments (objf->obfd, |
62982abd SM |
4300 | data.get (), offs, |
4301 | num_segments, segments); | |
31d99776 DJ |
4302 | |
4303 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4304 | error (_("Can not handle qOffsets TextSeg " |
4305 | "response with this symbol file")); | |
31d99776 DJ |
4306 | |
4307 | if (ret > 0) | |
4308 | do_sections = 0; | |
4309 | } | |
c906108c | 4310 | |
31d99776 DJ |
4311 | if (do_sections) |
4312 | { | |
a42d7dd8 | 4313 | offs[SECT_OFF_TEXT (objf)] = text_addr; |
31d99776 | 4314 | |
3e43a32a MS |
4315 | /* This is a temporary kludge to force data and bss to use the |
4316 | same offsets because that's what nlmconv does now. The real | |
4317 | solution requires changes to the stub and remote.c that I | |
4318 | don't have time to do right now. */ | |
31d99776 | 4319 | |
a42d7dd8 TT |
4320 | offs[SECT_OFF_DATA (objf)] = data_addr; |
4321 | offs[SECT_OFF_BSS (objf)] = data_addr; | |
31d99776 | 4322 | } |
c906108c | 4323 | |
a42d7dd8 | 4324 | objfile_relocate (objf, offs); |
c906108c SS |
4325 | } |
4326 | ||
9a7071a8 | 4327 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4328 | |
4329 | void | |
4330 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4331 | { |
5d93a237 TT |
4332 | struct remote_state *rs = get_remote_state (); |
4333 | ||
9a7071a8 | 4334 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4335 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4336 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4337 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4338 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4339 | { | |
5d93a237 | 4340 | serial_send_break (rs->remote_desc); |
c33e31fd | 4341 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4342 | } |
4343 | else | |
4344 | internal_error (__FILE__, __LINE__, | |
4345 | _("Invalid value for interrupt_sequence_mode: %s."), | |
4346 | interrupt_sequence_mode); | |
4347 | } | |
4348 | ||
3405876a PA |
4349 | |
4350 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4351 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4352 | ||
4353 | static ptid_t | |
e3b2741b | 4354 | stop_reply_extract_thread (const char *stop_reply) |
3405876a PA |
4355 | { |
4356 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4357 | { | |
256642e8 | 4358 | const char *p; |
3405876a PA |
4359 | |
4360 | /* Txx r:val ; r:val (...) */ | |
4361 | p = &stop_reply[3]; | |
4362 | ||
4363 | /* Look for "register" named "thread". */ | |
4364 | while (*p != '\0') | |
4365 | { | |
256642e8 | 4366 | const char *p1; |
3405876a PA |
4367 | |
4368 | p1 = strchr (p, ':'); | |
4369 | if (p1 == NULL) | |
4370 | return null_ptid; | |
4371 | ||
4372 | if (strncmp (p, "thread", p1 - p) == 0) | |
4373 | return read_ptid (++p1, &p); | |
4374 | ||
4375 | p1 = strchr (p, ';'); | |
4376 | if (p1 == NULL) | |
4377 | return null_ptid; | |
4378 | p1++; | |
4379 | ||
4380 | p = p1; | |
4381 | } | |
4382 | } | |
4383 | ||
4384 | return null_ptid; | |
4385 | } | |
4386 | ||
b7ea362b PA |
4387 | /* Determine the remote side's current thread. If we have a stop |
4388 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4389 | "thread" register we can extract the current thread from. If not, | |
4390 | ask the remote which is the current thread with qC. The former | |
4391 | method avoids a roundtrip. */ | |
4392 | ||
6b8edb51 | 4393 | ptid_t |
e3b2741b | 4394 | remote_target::get_current_thread (const char *wait_status) |
b7ea362b | 4395 | { |
6a49a997 | 4396 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4397 | |
4398 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4399 | the target architecture, which we haven't yet fully determined at | |
4400 | this point. */ | |
4401 | if (wait_status != NULL) | |
4402 | ptid = stop_reply_extract_thread (wait_status); | |
d7e15655 | 4403 | if (ptid == null_ptid) |
b7ea362b PA |
4404 | ptid = remote_current_thread (inferior_ptid); |
4405 | ||
4406 | return ptid; | |
4407 | } | |
4408 | ||
49c62f2e PA |
4409 | /* Query the remote target for which is the current thread/process, |
4410 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4411 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4412 | to return the current thread. |
4413 | ||
4414 | This function is called after handling the '?' or 'vRun' packets, | |
4415 | whose response is a stop reply from which we can also try | |
4416 | extracting the thread. If the target doesn't support the explicit | |
4417 | qC query, we infer the current thread from that stop reply, passed | |
4418 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e | 4419 | |
6b8edb51 | 4420 | void |
e3b2741b | 4421 | remote_target::add_current_inferior_and_thread (const char *wait_status) |
49c62f2e PA |
4422 | { |
4423 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 4424 | bool fake_pid_p = false; |
49c62f2e | 4425 | |
0ac55310 | 4426 | switch_to_no_thread (); |
49c62f2e | 4427 | |
0ac55310 PA |
4428 | /* Now, if we have thread information, update the current thread's |
4429 | ptid. */ | |
87215ad1 | 4430 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4431 | |
87215ad1 | 4432 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4433 | { |
4434 | if (!remote_multi_process_p (rs)) | |
9ab8741a | 4435 | fake_pid_p = true; |
49c62f2e PA |
4436 | } |
4437 | else | |
4438 | { | |
4439 | /* Without this, some commands which require an active target | |
4440 | (such as kill) won't work. This variable serves (at least) | |
4441 | double duty as both the pid of the target process (if it has | |
4442 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4443 | curr_ptid = magic_null_ptid; |
9ab8741a | 4444 | fake_pid_p = true; |
49c62f2e PA |
4445 | } |
4446 | ||
e99b03dc | 4447 | remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1); |
49c62f2e | 4448 | |
87215ad1 SDJ |
4449 | /* Add the main thread and switch to it. Don't try reading |
4450 | registers yet, since we haven't fetched the target description | |
4451 | yet. */ | |
5b6d1e4f | 4452 | thread_info *tp = add_thread_silent (this, curr_ptid); |
87215ad1 | 4453 | switch_to_thread_no_regs (tp); |
49c62f2e PA |
4454 | } |
4455 | ||
6efcd9a8 PA |
4456 | /* Print info about a thread that was found already stopped on |
4457 | connection. */ | |
4458 | ||
4459 | static void | |
4460 | print_one_stopped_thread (struct thread_info *thread) | |
4461 | { | |
4462 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
4463 | ||
00431a78 | 4464 | switch_to_thread (thread); |
f2ffa92b | 4465 | thread->suspend.stop_pc = get_frame_pc (get_current_frame ()); |
6efcd9a8 PA |
4466 | set_current_sal_from_frame (get_current_frame ()); |
4467 | ||
4468 | thread->suspend.waitstatus_pending_p = 0; | |
4469 | ||
4470 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
4471 | { | |
4472 | enum gdb_signal sig = ws->value.sig; | |
4473 | ||
4474 | if (signal_print_state (sig)) | |
76727919 | 4475 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4476 | } |
76727919 | 4477 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4478 | } |
4479 | ||
221e1a37 PA |
4480 | /* Process all initial stop replies the remote side sent in response |
4481 | to the ? packet. These indicate threads that were already stopped | |
4482 | on initial connection. We mark these threads as stopped and print | |
4483 | their current frame before giving the user the prompt. */ | |
4484 | ||
6b8edb51 PA |
4485 | void |
4486 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4487 | { |
4488 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4489 | struct thread_info *selected = NULL; |
4490 | struct thread_info *lowest_stopped = NULL; | |
4491 | struct thread_info *first = NULL; | |
221e1a37 PA |
4492 | |
4493 | /* Consume the initial pending events. */ | |
4494 | while (pending_stop_replies-- > 0) | |
4495 | { | |
4496 | ptid_t waiton_ptid = minus_one_ptid; | |
4497 | ptid_t event_ptid; | |
4498 | struct target_waitstatus ws; | |
4499 | int ignore_event = 0; | |
4500 | ||
4501 | memset (&ws, 0, sizeof (ws)); | |
4502 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
4503 | if (remote_debug) | |
4504 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
4505 | ||
4506 | switch (ws.kind) | |
4507 | { | |
4508 | case TARGET_WAITKIND_IGNORE: | |
4509 | case TARGET_WAITKIND_NO_RESUMED: | |
4510 | case TARGET_WAITKIND_SIGNALLED: | |
4511 | case TARGET_WAITKIND_EXITED: | |
4512 | /* We shouldn't see these, but if we do, just ignore. */ | |
4513 | if (remote_debug) | |
4514 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
4515 | ignore_event = 1; | |
4516 | break; | |
4517 | ||
4518 | case TARGET_WAITKIND_EXECD: | |
4519 | xfree (ws.value.execd_pathname); | |
4520 | break; | |
4521 | default: | |
4522 | break; | |
4523 | } | |
4524 | ||
4525 | if (ignore_event) | |
4526 | continue; | |
4527 | ||
5b6d1e4f | 4528 | thread_info *evthread = find_thread_ptid (this, event_ptid); |
221e1a37 PA |
4529 | |
4530 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
4531 | { | |
4532 | enum gdb_signal sig = ws.value.sig; | |
4533 | ||
4534 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4535 | instead of signal 0. Suppress it. */ | |
4536 | if (sig == GDB_SIGNAL_TRAP) | |
4537 | sig = GDB_SIGNAL_0; | |
b926417a | 4538 | evthread->suspend.stop_signal = sig; |
6efcd9a8 PA |
4539 | ws.value.sig = sig; |
4540 | } | |
221e1a37 | 4541 | |
b926417a | 4542 | evthread->suspend.waitstatus = ws; |
6efcd9a8 PA |
4543 | |
4544 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
4545 | || ws.value.sig != GDB_SIGNAL_0) | |
b926417a | 4546 | evthread->suspend.waitstatus_pending_p = 1; |
6efcd9a8 | 4547 | |
719546c4 SM |
4548 | set_executing (this, event_ptid, false); |
4549 | set_running (this, event_ptid, false); | |
c9d22089 | 4550 | get_remote_thread_info (evthread)->set_not_resumed (); |
6efcd9a8 PA |
4551 | } |
4552 | ||
4553 | /* "Notice" the new inferiors before anything related to | |
4554 | registers/memory. */ | |
5b6d1e4f | 4555 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4556 | { |
6efcd9a8 PA |
4557 | inf->needs_setup = 1; |
4558 | ||
4559 | if (non_stop) | |
4560 | { | |
08036331 | 4561 | thread_info *thread = any_live_thread_of_inferior (inf); |
00431a78 | 4562 | notice_new_inferior (thread, thread->state == THREAD_RUNNING, |
6efcd9a8 PA |
4563 | from_tty); |
4564 | } | |
4565 | } | |
4566 | ||
4567 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4568 | records the threads' stop pc, so must be done after "noticing" | |
4569 | the inferiors. */ | |
4570 | if (!non_stop) | |
4571 | { | |
4572 | stop_all_threads (); | |
4573 | ||
4574 | /* If all threads of an inferior were already stopped, we | |
4575 | haven't setup the inferior yet. */ | |
5b6d1e4f | 4576 | for (inferior *inf : all_non_exited_inferiors (this)) |
6efcd9a8 | 4577 | { |
6efcd9a8 PA |
4578 | if (inf->needs_setup) |
4579 | { | |
08036331 | 4580 | thread_info *thread = any_live_thread_of_inferior (inf); |
6efcd9a8 PA |
4581 | switch_to_thread_no_regs (thread); |
4582 | setup_inferior (0); | |
4583 | } | |
4584 | } | |
221e1a37 | 4585 | } |
6efcd9a8 PA |
4586 | |
4587 | /* Now go over all threads that are stopped, and print their current | |
4588 | frame. If all-stop, then if there's a signalled thread, pick | |
4589 | that as current. */ | |
5b6d1e4f | 4590 | for (thread_info *thread : all_non_exited_threads (this)) |
6efcd9a8 | 4591 | { |
6efcd9a8 PA |
4592 | if (first == NULL) |
4593 | first = thread; | |
4594 | ||
4595 | if (!non_stop) | |
00431a78 | 4596 | thread->set_running (false); |
6efcd9a8 PA |
4597 | else if (thread->state != THREAD_STOPPED) |
4598 | continue; | |
4599 | ||
6efcd9a8 PA |
4600 | if (selected == NULL |
4601 | && thread->suspend.waitstatus_pending_p) | |
4602 | selected = thread; | |
4603 | ||
5d5658a1 PA |
4604 | if (lowest_stopped == NULL |
4605 | || thread->inf->num < lowest_stopped->inf->num | |
4606 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4607 | lowest_stopped = thread; |
4608 | ||
4609 | if (non_stop) | |
4610 | print_one_stopped_thread (thread); | |
4611 | } | |
4612 | ||
4613 | /* In all-stop, we only print the status of one thread, and leave | |
4614 | others with their status pending. */ | |
4615 | if (!non_stop) | |
4616 | { | |
08036331 | 4617 | thread_info *thread = selected; |
6efcd9a8 PA |
4618 | if (thread == NULL) |
4619 | thread = lowest_stopped; | |
4620 | if (thread == NULL) | |
4621 | thread = first; | |
4622 | ||
4623 | print_one_stopped_thread (thread); | |
4624 | } | |
4625 | ||
4626 | /* For "info program". */ | |
08036331 | 4627 | thread_info *thread = inferior_thread (); |
6efcd9a8 | 4628 | if (thread->state == THREAD_STOPPED) |
5b6d1e4f | 4629 | set_last_target_status (this, inferior_ptid, thread->suspend.waitstatus); |
221e1a37 PA |
4630 | } |
4631 | ||
048094ac PA |
4632 | /* Start the remote connection and sync state. */ |
4633 | ||
f6ac5f3d PA |
4634 | void |
4635 | remote_target::start_remote (int from_tty, int extended_p) | |
c906108c | 4636 | { |
c8d104ad PA |
4637 | struct remote_state *rs = get_remote_state (); |
4638 | struct packet_config *noack_config; | |
2d717e4f | 4639 | char *wait_status = NULL; |
8621d6a9 | 4640 | |
048094ac PA |
4641 | /* Signal other parts that we're going through the initial setup, |
4642 | and so things may not be stable yet. E.g., we don't try to | |
4643 | install tracepoints until we've relocated symbols. Also, a | |
4644 | Ctrl-C before we're connected and synced up can't interrupt the | |
4645 | target. Instead, it offers to drop the (potentially wedged) | |
4646 | connection. */ | |
4647 | rs->starting_up = 1; | |
4648 | ||
522002f9 | 4649 | QUIT; |
c906108c | 4650 | |
9a7071a8 JB |
4651 | if (interrupt_on_connect) |
4652 | send_interrupt_sequence (); | |
4653 | ||
57e12211 | 4654 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4655 | remote_serial_write ("+", 1); |
1e51243a | 4656 | |
c8d104ad PA |
4657 | /* The first packet we send to the target is the optional "supported |
4658 | packets" request. If the target can answer this, it will tell us | |
4659 | which later probes to skip. */ | |
4660 | remote_query_supported (); | |
4661 | ||
d914c394 | 4662 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4663 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4664 | set_permissions (); |
d914c394 | 4665 | |
57809e5e JK |
4666 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4667 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4668 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4669 | invalid reply and GDB would return error in | |
4670 | remote_hostio_set_filesystem, making remote files access impossible. | |
4671 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4672 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4673 | { | |
4674 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4675 | ||
4676 | putpkt (v_mustreplyempty); | |
8d64371b TT |
4677 | getpkt (&rs->buf, 0); |
4678 | if (strcmp (rs->buf.data (), "OK") == 0) | |
57809e5e | 4679 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; |
8d64371b | 4680 | else if (strcmp (rs->buf.data (), "") != 0) |
57809e5e | 4681 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, |
8d64371b | 4682 | rs->buf.data ()); |
57809e5e JK |
4683 | } |
4684 | ||
c8d104ad PA |
4685 | /* Next, we possibly activate noack mode. |
4686 | ||
4687 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4688 | enable noack mode if the stub reported a wish for it with | |
4689 | qSupported. | |
4690 | ||
4691 | If set to TRUE, then enable noack mode even if the stub didn't | |
4692 | report it in qSupported. If the stub doesn't reply OK, the | |
4693 | session ends with an error. | |
4694 | ||
4695 | If FALSE, then don't activate noack mode, regardless of what the | |
4696 | stub claimed should be the default with qSupported. */ | |
4697 | ||
4698 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4699 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4700 | { |
4701 | putpkt ("QStartNoAckMode"); | |
8d64371b | 4702 | getpkt (&rs->buf, 0); |
c8d104ad PA |
4703 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) |
4704 | rs->noack_mode = 1; | |
4705 | } | |
4706 | ||
04bd08de | 4707 | if (extended_p) |
5fe04517 PA |
4708 | { |
4709 | /* Tell the remote that we are using the extended protocol. */ | |
4710 | putpkt ("!"); | |
8d64371b | 4711 | getpkt (&rs->buf, 0); |
5fe04517 PA |
4712 | } |
4713 | ||
9b224c5e PA |
4714 | /* Let the target know which signals it is allowed to pass down to |
4715 | the program. */ | |
4716 | update_signals_program_target (); | |
4717 | ||
d962ef82 DJ |
4718 | /* Next, if the target can specify a description, read it. We do |
4719 | this before anything involving memory or registers. */ | |
4720 | target_find_description (); | |
4721 | ||
6c95b8df PA |
4722 | /* Next, now that we know something about the target, update the |
4723 | address spaces in the program spaces. */ | |
4724 | update_address_spaces (); | |
4725 | ||
50c71eaf PA |
4726 | /* On OSs where the list of libraries is global to all |
4727 | processes, we fetch them early. */ | |
f5656ead | 4728 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4729 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4730 | |
6efcd9a8 | 4731 | if (target_is_non_stop_p ()) |
74531fed | 4732 | { |
4082afcc | 4733 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4734 | error (_("Non-stop mode requested, but remote " |
4735 | "does not support non-stop")); | |
74531fed PA |
4736 | |
4737 | putpkt ("QNonStop:1"); | |
8d64371b | 4738 | getpkt (&rs->buf, 0); |
74531fed | 4739 | |
8d64371b TT |
4740 | if (strcmp (rs->buf.data (), "OK") != 0) |
4741 | error (_("Remote refused setting non-stop mode with: %s"), | |
4742 | rs->buf.data ()); | |
74531fed PA |
4743 | |
4744 | /* Find about threads and processes the stub is already | |
4745 | controlling. We default to adding them in the running state. | |
4746 | The '?' query below will then tell us about which threads are | |
4747 | stopped. */ | |
f6ac5f3d | 4748 | this->update_thread_list (); |
74531fed | 4749 | } |
4082afcc | 4750 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4751 | { |
4752 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4753 | Request it explicitly. */ |
74531fed | 4754 | putpkt ("QNonStop:0"); |
8d64371b | 4755 | getpkt (&rs->buf, 0); |
74531fed | 4756 | |
8d64371b TT |
4757 | if (strcmp (rs->buf.data (), "OK") != 0) |
4758 | error (_("Remote refused setting all-stop mode with: %s"), | |
4759 | rs->buf.data ()); | |
74531fed PA |
4760 | } |
4761 | ||
a0743c90 YQ |
4762 | /* Upload TSVs regardless of whether the target is running or not. The |
4763 | remote stub, such as GDBserver, may have some predefined or builtin | |
4764 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4765 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4766 | { |
4767 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4768 | ||
f6ac5f3d | 4769 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4770 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4771 | } | |
4772 | ||
2d717e4f DJ |
4773 | /* Check whether the target is running now. */ |
4774 | putpkt ("?"); | |
8d64371b | 4775 | getpkt (&rs->buf, 0); |
2d717e4f | 4776 | |
6efcd9a8 | 4777 | if (!target_is_non_stop_p ()) |
2d717e4f | 4778 | { |
74531fed | 4779 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4780 | { |
04bd08de | 4781 | if (!extended_p) |
74531fed | 4782 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4783 | |
4784 | /* We're connected, but not running. Drop out before we | |
4785 | call start_remote. */ | |
e278ad5b | 4786 | rs->starting_up = 0; |
c35b1492 | 4787 | return; |
2d717e4f DJ |
4788 | } |
4789 | else | |
74531fed | 4790 | { |
74531fed | 4791 | /* Save the reply for later. */ |
8d64371b TT |
4792 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
4793 | strcpy (wait_status, rs->buf.data ()); | |
74531fed PA |
4794 | } |
4795 | ||
b7ea362b | 4796 | /* Fetch thread list. */ |
e8032dde | 4797 | target_update_thread_list (); |
b7ea362b | 4798 | |
74531fed PA |
4799 | /* Let the stub know that we want it to return the thread. */ |
4800 | set_continue_thread (minus_one_ptid); | |
4801 | ||
5b6d1e4f | 4802 | if (thread_count (this) == 0) |
b7ea362b PA |
4803 | { |
4804 | /* Target has no concept of threads at all. GDB treats | |
4805 | non-threaded target as single-threaded; add a main | |
4806 | thread. */ | |
4807 | add_current_inferior_and_thread (wait_status); | |
4808 | } | |
4809 | else | |
4810 | { | |
4811 | /* We have thread information; select the thread the target | |
4812 | says should be current. If we're reconnecting to a | |
4813 | multi-threaded program, this will ideally be the thread | |
4814 | that last reported an event before GDB disconnected. */ | |
75c6c844 PA |
4815 | ptid_t curr_thread = get_current_thread (wait_status); |
4816 | if (curr_thread == null_ptid) | |
b7ea362b PA |
4817 | { |
4818 | /* Odd... The target was able to list threads, but not | |
4819 | tell us which thread was current (no "thread" | |
4820 | register in T stop reply?). Just pick the first | |
4821 | thread in the thread list then. */ | |
c9f35b34 KB |
4822 | |
4823 | if (remote_debug) | |
4824 | fprintf_unfiltered (gdb_stdlog, | |
dda83cd7 | 4825 | "warning: couldn't determine remote " |
c9f35b34 KB |
4826 | "current thread; picking first in list.\n"); |
4827 | ||
5b6d1e4f PA |
4828 | for (thread_info *tp : all_non_exited_threads (this, |
4829 | minus_one_ptid)) | |
75c6c844 PA |
4830 | { |
4831 | switch_to_thread (tp); | |
4832 | break; | |
4833 | } | |
b7ea362b | 4834 | } |
75c6c844 | 4835 | else |
5b6d1e4f | 4836 | switch_to_thread (find_thread_ptid (this, curr_thread)); |
b7ea362b | 4837 | } |
74531fed | 4838 | |
6e586cc5 YQ |
4839 | /* init_wait_for_inferior should be called before get_offsets in order |
4840 | to manage `inserted' flag in bp loc in a correct state. | |
4841 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4842 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4843 | start_remote, set `inserted' flag to 1. In the initialization of | |
4844 | inferior, breakpoint_init_inferior should be called first, and then | |
4845 | breakpoint_re_set can be called. If this order is broken, state of | |
4846 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4847 | manipulation. */ | |
4848 | init_wait_for_inferior (); | |
4849 | ||
74531fed PA |
4850 | get_offsets (); /* Get text, data & bss offsets. */ |
4851 | ||
d962ef82 DJ |
4852 | /* If we could not find a description using qXfer, and we know |
4853 | how to do it some other way, try again. This is not | |
4854 | supported for non-stop; it could be, but it is tricky if | |
4855 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4856 | if (remote_read_description_p (this) |
f5656ead | 4857 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4858 | { |
4859 | target_clear_description (); | |
4860 | target_find_description (); | |
4861 | } | |
4862 | ||
74531fed PA |
4863 | /* Use the previously fetched status. */ |
4864 | gdb_assert (wait_status != NULL); | |
8d64371b | 4865 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
4866 | rs->cached_wait_status = 1; |
4867 | ||
f6ac5f3d | 4868 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4869 | } |
4870 | else | |
4871 | { | |
68c97600 PA |
4872 | /* Clear WFI global state. Do this before finding about new |
4873 | threads and inferiors, and setting the current inferior. | |
4874 | Otherwise we would clear the proceed status of the current | |
4875 | inferior when we want its stop_soon state to be preserved | |
4876 | (see notice_new_inferior). */ | |
4877 | init_wait_for_inferior (); | |
4878 | ||
74531fed PA |
4879 | /* In non-stop, we will either get an "OK", meaning that there |
4880 | are no stopped threads at this time; or, a regular stop | |
4881 | reply. In the latter case, there may be more than one thread | |
4882 | stopped --- we pull them all out using the vStopped | |
4883 | mechanism. */ | |
8d64371b | 4884 | if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 4885 | { |
722247f1 | 4886 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4887 | |
722247f1 YQ |
4888 | /* remote_notif_get_pending_replies acks this one, and gets |
4889 | the rest out. */ | |
f48ff2a7 | 4890 | rs->notif_state->pending_event[notif_client_stop.id] |
8d64371b | 4891 | = remote_notif_parse (this, notif, rs->buf.data ()); |
722247f1 | 4892 | remote_notif_get_pending_events (notif); |
74531fed | 4893 | } |
2d717e4f | 4894 | |
5b6d1e4f | 4895 | if (thread_count (this) == 0) |
74531fed | 4896 | { |
04bd08de | 4897 | if (!extended_p) |
74531fed | 4898 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4899 | |
c35b1492 PA |
4900 | /* We're connected, but not running. Drop out before we |
4901 | call start_remote. */ | |
e278ad5b | 4902 | rs->starting_up = 0; |
c35b1492 PA |
4903 | return; |
4904 | } | |
74531fed | 4905 | |
74531fed PA |
4906 | /* In non-stop mode, any cached wait status will be stored in |
4907 | the stop reply queue. */ | |
4908 | gdb_assert (wait_status == NULL); | |
f0223081 | 4909 | |
2455069d | 4910 | /* Report all signals during attach/startup. */ |
adc6a863 | 4911 | pass_signals ({}); |
221e1a37 PA |
4912 | |
4913 | /* If there are already stopped threads, mark them stopped and | |
4914 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4915 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4916 | |
4917 | if (target_can_async_p ()) | |
4918 | target_async (1); | |
74531fed | 4919 | } |
c8d104ad | 4920 | |
c8d104ad | 4921 | /* If we connected to a live target, do some additional setup. */ |
55f6301a | 4922 | if (target_has_execution ()) |
c8d104ad | 4923 | { |
a42d7dd8 TT |
4924 | /* No use without a symbol-file. */ |
4925 | if (current_program_space->symfile_object_file) | |
36d25514 | 4926 | remote_check_symbols (); |
c8d104ad | 4927 | } |
50c71eaf | 4928 | |
d5551862 SS |
4929 | /* Possibly the target has been engaged in a trace run started |
4930 | previously; find out where things are at. */ | |
f6ac5f3d | 4931 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 4932 | { |
00bf0b85 | 4933 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4934 | |
00bf0b85 SS |
4935 | if (current_trace_status ()->running) |
4936 | printf_filtered (_("Trace is already running on the target.\n")); | |
4937 | ||
f6ac5f3d | 4938 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
4939 | |
4940 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4941 | } |
4942 | ||
c0272db5 TW |
4943 | /* Possibly the target has been engaged in a btrace record started |
4944 | previously; find out where things are at. */ | |
4945 | remote_btrace_maybe_reopen (); | |
4946 | ||
1e51243a PA |
4947 | /* The thread and inferior lists are now synchronized with the |
4948 | target, our symbols have been relocated, and we're merged the | |
4949 | target's tracepoints with ours. We're done with basic start | |
4950 | up. */ | |
4951 | rs->starting_up = 0; | |
4952 | ||
a25a5a45 PA |
4953 | /* Maybe breakpoints are global and need to be inserted now. */ |
4954 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4955 | insert_breakpoints (); |
c906108c SS |
4956 | } |
4957 | ||
121b3efd PA |
4958 | const char * |
4959 | remote_target::connection_string () | |
4960 | { | |
4961 | remote_state *rs = get_remote_state (); | |
4962 | ||
4963 | if (rs->remote_desc->name != NULL) | |
4964 | return rs->remote_desc->name; | |
4965 | else | |
4966 | return NULL; | |
4967 | } | |
4968 | ||
c906108c SS |
4969 | /* Open a connection to a remote debugger. |
4970 | NAME is the filename used for communication. */ | |
4971 | ||
f6ac5f3d PA |
4972 | void |
4973 | remote_target::open (const char *name, int from_tty) | |
c906108c | 4974 | { |
f6ac5f3d | 4975 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
4976 | } |
4977 | ||
c906108c SS |
4978 | /* Open a connection to a remote debugger using the extended |
4979 | remote gdb protocol. NAME is the filename used for communication. */ | |
4980 | ||
f6ac5f3d PA |
4981 | void |
4982 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 4983 | { |
f6ac5f3d | 4984 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
4985 | } |
4986 | ||
ca4f7f8b PA |
4987 | /* Reset all packets back to "unknown support". Called when opening a |
4988 | new connection to a remote target. */ | |
c906108c | 4989 | |
d471ea57 | 4990 | static void |
ca4f7f8b | 4991 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4992 | { |
4993 | int i; | |
a744cf53 | 4994 | |
444abaca | 4995 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4996 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4997 | } |
4998 | ||
ca4f7f8b PA |
4999 | /* Initialize all packet configs. */ |
5000 | ||
5001 | static void | |
5002 | init_all_packet_configs (void) | |
5003 | { | |
5004 | int i; | |
5005 | ||
5006 | for (i = 0; i < PACKET_MAX; i++) | |
5007 | { | |
5008 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
5009 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
5010 | } | |
5011 | } | |
5012 | ||
23860348 | 5013 | /* Symbol look-up. */ |
dc8acb97 | 5014 | |
6b8edb51 PA |
5015 | void |
5016 | remote_target::remote_check_symbols () | |
dc8acb97 | 5017 | { |
8d64371b | 5018 | char *tmp; |
dc8acb97 MS |
5019 | int end; |
5020 | ||
63154eca PA |
5021 | /* The remote side has no concept of inferiors that aren't running |
5022 | yet, it only knows about running processes. If we're connected | |
5023 | but our current inferior is not running, we should not invite the | |
5024 | remote target to request symbol lookups related to its | |
5025 | (unrelated) current process. */ | |
55f6301a | 5026 | if (!target_has_execution ()) |
63154eca PA |
5027 | return; |
5028 | ||
4082afcc | 5029 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
5030 | return; |
5031 | ||
63154eca PA |
5032 | /* Make sure the remote is pointing at the right process. Note |
5033 | there's no way to select "no process". */ | |
3c9c4b83 PA |
5034 | set_general_process (); |
5035 | ||
6d820c5c DJ |
5036 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
5037 | because we need both at the same time. */ | |
66644cd3 | 5038 | gdb::char_vector msg (get_remote_packet_size ()); |
8d64371b | 5039 | gdb::char_vector reply (get_remote_packet_size ()); |
6d820c5c | 5040 | |
23860348 | 5041 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
5042 | |
5043 | putpkt ("qSymbol::"); | |
8d64371b | 5044 | getpkt (&reply, 0); |
28170b88 | 5045 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); |
dc8acb97 | 5046 | |
8d64371b | 5047 | while (startswith (reply.data (), "qSymbol:")) |
dc8acb97 | 5048 | { |
77e371c0 TT |
5049 | struct bound_minimal_symbol sym; |
5050 | ||
dc8acb97 | 5051 | tmp = &reply[8]; |
66644cd3 AB |
5052 | end = hex2bin (tmp, reinterpret_cast <gdb_byte *> (msg.data ()), |
5053 | strlen (tmp) / 2); | |
dc8acb97 | 5054 | msg[end] = '\0'; |
66644cd3 | 5055 | sym = lookup_minimal_symbol (msg.data (), NULL, NULL); |
3b7344d5 | 5056 | if (sym.minsym == NULL) |
66644cd3 AB |
5057 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol::%s", |
5058 | &reply[8]); | |
dc8acb97 | 5059 | else |
2bbe3cc1 | 5060 | { |
f5656ead | 5061 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 5062 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
5063 | |
5064 | /* If this is a function address, return the start of code | |
5065 | instead of any data function descriptor. */ | |
f5656ead | 5066 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 | 5067 | sym_addr, |
8b88a78e | 5068 | current_top_target ()); |
2bbe3cc1 | 5069 | |
66644cd3 | 5070 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol:%s:%s", |
5af949e3 | 5071 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 | 5072 | } |
66644cd3 AB |
5073 | |
5074 | putpkt (msg.data ()); | |
8d64371b | 5075 | getpkt (&reply, 0); |
dc8acb97 MS |
5076 | } |
5077 | } | |
5078 | ||
9db8d71f | 5079 | static struct serial * |
baa336ce | 5080 | remote_serial_open (const char *name) |
9db8d71f DJ |
5081 | { |
5082 | static int udp_warning = 0; | |
5083 | ||
5084 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
5085 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
5086 | serial connection is reliable and not the serial connection promising | |
5087 | to be. */ | |
61012eef | 5088 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 5089 | { |
3e43a32a MS |
5090 | warning (_("The remote protocol may be unreliable over UDP.\n" |
5091 | "Some events may be lost, rendering further debugging " | |
5092 | "impossible.")); | |
9db8d71f DJ |
5093 | udp_warning = 1; |
5094 | } | |
5095 | ||
5096 | return serial_open (name); | |
5097 | } | |
5098 | ||
d914c394 SS |
5099 | /* Inform the target of our permission settings. The permission flags |
5100 | work without this, but if the target knows the settings, it can do | |
5101 | a couple things. First, it can add its own check, to catch cases | |
5102 | that somehow manage to get by the permissions checks in target | |
5103 | methods. Second, if the target is wired to disallow particular | |
5104 | settings (for instance, a system in the field that is not set up to | |
5105 | be able to stop at a breakpoint), it can object to any unavailable | |
5106 | permissions. */ | |
5107 | ||
5108 | void | |
f6ac5f3d | 5109 | remote_target::set_permissions () |
d914c394 SS |
5110 | { |
5111 | struct remote_state *rs = get_remote_state (); | |
5112 | ||
8d64371b | 5113 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAllow:" |
bba74b36 YQ |
5114 | "WriteReg:%x;WriteMem:%x;" |
5115 | "InsertBreak:%x;InsertTrace:%x;" | |
5116 | "InsertFastTrace:%x;Stop:%x", | |
5117 | may_write_registers, may_write_memory, | |
5118 | may_insert_breakpoints, may_insert_tracepoints, | |
5119 | may_insert_fast_tracepoints, may_stop); | |
d914c394 | 5120 | putpkt (rs->buf); |
8d64371b | 5121 | getpkt (&rs->buf, 0); |
d914c394 SS |
5122 | |
5123 | /* If the target didn't like the packet, warn the user. Do not try | |
5124 | to undo the user's settings, that would just be maddening. */ | |
8d64371b TT |
5125 | if (strcmp (rs->buf.data (), "OK") != 0) |
5126 | warning (_("Remote refused setting permissions with: %s"), | |
5127 | rs->buf.data ()); | |
d914c394 SS |
5128 | } |
5129 | ||
be2a5f71 DJ |
5130 | /* This type describes each known response to the qSupported |
5131 | packet. */ | |
5132 | struct protocol_feature | |
5133 | { | |
5134 | /* The name of this protocol feature. */ | |
5135 | const char *name; | |
5136 | ||
5137 | /* The default for this protocol feature. */ | |
5138 | enum packet_support default_support; | |
5139 | ||
5140 | /* The function to call when this feature is reported, or after | |
5141 | qSupported processing if the feature is not supported. | |
5142 | The first argument points to this structure. The second | |
5143 | argument indicates whether the packet requested support be | |
5144 | enabled, disabled, or probed (or the default, if this function | |
5145 | is being called at the end of processing and this feature was | |
5146 | not reported). The third argument may be NULL; if not NULL, it | |
5147 | is a NUL-terminated string taken from the packet following | |
5148 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5149 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5150 | enum packet_support, const char *); | |
be2a5f71 DJ |
5151 | |
5152 | /* The corresponding packet for this feature. Only used if | |
5153 | FUNC is remote_supported_packet. */ | |
5154 | int packet; | |
5155 | }; | |
5156 | ||
be2a5f71 | 5157 | static void |
6b8edb51 PA |
5158 | remote_supported_packet (remote_target *remote, |
5159 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5160 | enum packet_support support, |
5161 | const char *argument) | |
5162 | { | |
5163 | if (argument) | |
5164 | { | |
5165 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5166 | " \"%s\"."), feature->name); | |
5167 | return; | |
5168 | } | |
5169 | ||
4082afcc | 5170 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5171 | } |
be2a5f71 | 5172 | |
6b8edb51 PA |
5173 | void |
5174 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5175 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5176 | { |
5177 | struct remote_state *rs = get_remote_state (); | |
5178 | ||
5179 | int packet_size; | |
5180 | char *value_end; | |
5181 | ||
5182 | if (support != PACKET_ENABLE) | |
5183 | return; | |
5184 | ||
5185 | if (value == NULL || *value == '\0') | |
5186 | { | |
5187 | warning (_("Remote target reported \"%s\" without a size."), | |
5188 | feature->name); | |
5189 | return; | |
5190 | } | |
5191 | ||
5192 | errno = 0; | |
5193 | packet_size = strtol (value, &value_end, 16); | |
5194 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5195 | { | |
5196 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5197 | feature->name, value); | |
5198 | return; | |
5199 | } | |
5200 | ||
be2a5f71 DJ |
5201 | /* Record the new maximum packet size. */ |
5202 | rs->explicit_packet_size = packet_size; | |
5203 | } | |
5204 | ||
cb8c24b6 | 5205 | static void |
6b8edb51 PA |
5206 | remote_packet_size (remote_target *remote, const protocol_feature *feature, |
5207 | enum packet_support support, const char *value) | |
5208 | { | |
5209 | remote->remote_packet_size (feature, support, value); | |
5210 | } | |
5211 | ||
dc473cfb | 5212 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5213 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5214 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5215 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5216 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5217 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5218 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5219 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5220 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5221 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5222 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5223 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5224 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5225 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5226 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5227 | PACKET_qXfer_memory_map }, |
07e059b5 VP |
5228 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5229 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5230 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5231 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5232 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5233 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5234 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5235 | PACKET_QPassSignals }, | |
82075af2 JS |
5236 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5237 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5238 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5239 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5240 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5241 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5242 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5243 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5244 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5245 | PACKET_QEnvironmentHexEncoded }, | |
5246 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5247 | PACKET_QEnvironmentReset }, | |
5248 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5249 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5250 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5251 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5252 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5253 | PACKET_multiprocess_feature }, | |
5254 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5255 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5256 | PACKET_qXfer_siginfo_read }, | |
5257 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5258 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5259 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5260 | PACKET_ConditionalTracepoints }, |
4082afcc | 5261 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5262 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5263 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5264 | PACKET_BreakpointCommands }, |
4082afcc | 5265 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5266 | PACKET_FastTracepoints }, |
4082afcc | 5267 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5268 | PACKET_StaticTracepoints }, |
4082afcc | 5269 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5270 | PACKET_InstallInTrace}, |
4082afcc PA |
5271 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5272 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5273 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5274 | PACKET_bc }, | |
5275 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5276 | PACKET_bs }, | |
409873ef SS |
5277 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5278 | PACKET_TracepointSource }, | |
d914c394 SS |
5279 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5280 | PACKET_QAllow }, | |
4082afcc PA |
5281 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5282 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5283 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5284 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5285 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5286 | PACKET_qXfer_uib }, | |
03583c20 UW |
5287 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5288 | PACKET_QDisableRandomization }, | |
d1feda86 | 5289 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5290 | { "QTBuffer:size", PACKET_DISABLE, |
5291 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5292 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5293 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5294 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5295 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5296 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5297 | PACKET_qXfer_btrace }, |
5298 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5299 | PACKET_qXfer_btrace_conf }, |
5300 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5301 | PACKET_Qbtrace_conf_bts_size }, |
5302 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5303 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5304 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5305 | PACKET_fork_event_feature }, | |
5306 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5307 | PACKET_vfork_event_feature }, | |
94585166 DB |
5308 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5309 | PACKET_exec_event_feature }, | |
b20a6524 | 5310 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5311 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5312 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5313 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5314 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
5315 | }; |
5316 | ||
c8d5aac9 L |
5317 | static char *remote_support_xml; |
5318 | ||
5319 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5320 | ||
5321 | void | |
6e39997a | 5322 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5323 | { |
5324 | #if defined(HAVE_LIBEXPAT) | |
5325 | if (remote_support_xml == NULL) | |
c4f7c687 | 5326 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5327 | else |
5328 | { | |
5329 | char *copy = xstrdup (remote_support_xml + 13); | |
ca3a04f6 CB |
5330 | char *saveptr; |
5331 | char *p = strtok_r (copy, ",", &saveptr); | |
c8d5aac9 L |
5332 | |
5333 | do | |
5334 | { | |
5335 | if (strcmp (p, xml) == 0) | |
5336 | { | |
5337 | /* already there */ | |
5338 | xfree (copy); | |
5339 | return; | |
5340 | } | |
5341 | } | |
ca3a04f6 | 5342 | while ((p = strtok_r (NULL, ",", &saveptr)) != NULL); |
c8d5aac9 L |
5343 | xfree (copy); |
5344 | ||
94b0dee1 PA |
5345 | remote_support_xml = reconcat (remote_support_xml, |
5346 | remote_support_xml, ",", xml, | |
5347 | (char *) NULL); | |
c8d5aac9 L |
5348 | } |
5349 | #endif | |
5350 | } | |
5351 | ||
69b6ecb0 TT |
5352 | static void |
5353 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5354 | { |
69b6ecb0 TT |
5355 | if (!msg->empty ()) |
5356 | msg->append (";"); | |
5357 | msg->append (append); | |
c8d5aac9 L |
5358 | } |
5359 | ||
6b8edb51 PA |
5360 | void |
5361 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5362 | { |
5363 | struct remote_state *rs = get_remote_state (); | |
5364 | char *next; | |
5365 | int i; | |
5366 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5367 | ||
5368 | /* The packet support flags are handled differently for this packet | |
5369 | than for most others. We treat an error, a disabled packet, and | |
5370 | an empty response identically: any features which must be reported | |
5371 | to be used will be automatically disabled. An empty buffer | |
5372 | accomplishes this, since that is also the representation for a list | |
5373 | containing no features. */ | |
5374 | ||
5375 | rs->buf[0] = 0; | |
4082afcc | 5376 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5377 | { |
69b6ecb0 | 5378 | std::string q; |
c8d5aac9 | 5379 | |
73b8c1fd | 5380 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5381 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5382 | |
f7e6eed5 | 5383 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5384 | remote_query_supported_append (&q, "swbreak+"); |
f7e6eed5 | 5385 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5386 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5387 | |
69b6ecb0 | 5388 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5389 | |
8020350c DB |
5390 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
5391 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5392 | remote_query_supported_append (&q, "fork-events+"); |
8020350c DB |
5393 | if (packet_set_cmd_state (PACKET_vfork_event_feature) |
5394 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5395 | remote_query_supported_append (&q, "vfork-events+"); |
8020350c DB |
5396 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
5397 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5398 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5399 | |
750ce8d1 | 5400 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5401 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5402 | |
65706a29 | 5403 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5404 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5405 | |
f2faf941 | 5406 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5407 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5408 | |
b35d5edb PA |
5409 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5410 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5411 | if (remote_support_xml != NULL |
5412 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
69b6ecb0 | 5413 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5414 | |
69b6ecb0 TT |
5415 | q = "qSupported:" + q; |
5416 | putpkt (q.c_str ()); | |
94b0dee1 | 5417 | |
8d64371b | 5418 | getpkt (&rs->buf, 0); |
be2a5f71 DJ |
5419 | |
5420 | /* If an error occured, warn, but do not return - just reset the | |
5421 | buffer to empty and go on to disable features. */ | |
5422 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5423 | == PACKET_ERROR) | |
5424 | { | |
8d64371b | 5425 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
be2a5f71 DJ |
5426 | rs->buf[0] = 0; |
5427 | } | |
5428 | } | |
5429 | ||
5430 | memset (seen, 0, sizeof (seen)); | |
5431 | ||
8d64371b | 5432 | next = rs->buf.data (); |
be2a5f71 DJ |
5433 | while (*next) |
5434 | { | |
5435 | enum packet_support is_supported; | |
5436 | char *p, *end, *name_end, *value; | |
5437 | ||
5438 | /* First separate out this item from the rest of the packet. If | |
5439 | there's another item after this, we overwrite the separator | |
5440 | (terminated strings are much easier to work with). */ | |
5441 | p = next; | |
5442 | end = strchr (p, ';'); | |
5443 | if (end == NULL) | |
5444 | { | |
5445 | end = p + strlen (p); | |
5446 | next = end; | |
5447 | } | |
5448 | else | |
5449 | { | |
89be2091 DJ |
5450 | *end = '\0'; |
5451 | next = end + 1; | |
5452 | ||
be2a5f71 DJ |
5453 | if (end == p) |
5454 | { | |
5455 | warning (_("empty item in \"qSupported\" response")); | |
5456 | continue; | |
5457 | } | |
be2a5f71 DJ |
5458 | } |
5459 | ||
5460 | name_end = strchr (p, '='); | |
5461 | if (name_end) | |
5462 | { | |
5463 | /* This is a name=value entry. */ | |
5464 | is_supported = PACKET_ENABLE; | |
5465 | value = name_end + 1; | |
5466 | *name_end = '\0'; | |
5467 | } | |
5468 | else | |
5469 | { | |
5470 | value = NULL; | |
5471 | switch (end[-1]) | |
5472 | { | |
5473 | case '+': | |
5474 | is_supported = PACKET_ENABLE; | |
5475 | break; | |
5476 | ||
5477 | case '-': | |
5478 | is_supported = PACKET_DISABLE; | |
5479 | break; | |
5480 | ||
5481 | case '?': | |
5482 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5483 | break; | |
5484 | ||
5485 | default: | |
3e43a32a MS |
5486 | warning (_("unrecognized item \"%s\" " |
5487 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5488 | continue; |
5489 | } | |
5490 | end[-1] = '\0'; | |
5491 | } | |
5492 | ||
5493 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5494 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5495 | { | |
5496 | const struct protocol_feature *feature; | |
5497 | ||
5498 | seen[i] = 1; | |
5499 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5500 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5501 | break; |
5502 | } | |
5503 | } | |
5504 | ||
5505 | /* If we increased the packet size, make sure to increase the global | |
5506 | buffer size also. We delay this until after parsing the entire | |
5507 | qSupported packet, because this is the same buffer we were | |
5508 | parsing. */ | |
8d64371b TT |
5509 | if (rs->buf.size () < rs->explicit_packet_size) |
5510 | rs->buf.resize (rs->explicit_packet_size); | |
be2a5f71 DJ |
5511 | |
5512 | /* Handle the defaults for unmentioned features. */ | |
5513 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5514 | if (!seen[i]) | |
5515 | { | |
5516 | const struct protocol_feature *feature; | |
5517 | ||
5518 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5519 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5520 | } |
5521 | } | |
5522 | ||
048094ac PA |
5523 | /* Serial QUIT handler for the remote serial descriptor. |
5524 | ||
5525 | Defers handling a Ctrl-C until we're done with the current | |
5526 | command/response packet sequence, unless: | |
5527 | ||
5528 | - We're setting up the connection. Don't send a remote interrupt | |
5529 | request, as we're not fully synced yet. Quit immediately | |
5530 | instead. | |
5531 | ||
5532 | - The target has been resumed in the foreground | |
223ffa71 | 5533 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5534 | packet, and we're blocked waiting for the stop reply, thus a |
5535 | Ctrl-C should be immediately sent to the target. | |
5536 | ||
5537 | - We get a second Ctrl-C while still within the same serial read or | |
5538 | write. In that case the serial is seemingly wedged --- offer to | |
5539 | quit/disconnect. | |
5540 | ||
5541 | - We see a second Ctrl-C without target response, after having | |
5542 | previously interrupted the target. In that case the target/stub | |
5543 | is probably wedged --- offer to quit/disconnect. | |
5544 | */ | |
5545 | ||
6b8edb51 PA |
5546 | void |
5547 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5548 | { |
5549 | struct remote_state *rs = get_remote_state (); | |
5550 | ||
5551 | if (check_quit_flag ()) | |
5552 | { | |
5553 | /* If we're starting up, we're not fully synced yet. Quit | |
5554 | immediately. */ | |
5555 | if (rs->starting_up) | |
5556 | quit (); | |
5557 | else if (rs->got_ctrlc_during_io) | |
5558 | { | |
5559 | if (query (_("The target is not responding to GDB commands.\n" | |
5560 | "Stop debugging it? "))) | |
5b6d1e4f | 5561 | remote_unpush_and_throw (this); |
048094ac PA |
5562 | } |
5563 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5564 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5565 | interrupt_query (); |
5566 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5567 | an interrupt request. */ | |
223ffa71 | 5568 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5569 | target_interrupt (); |
048094ac PA |
5570 | else |
5571 | rs->got_ctrlc_during_io = 1; | |
5572 | } | |
5573 | } | |
5574 | ||
6b8edb51 PA |
5575 | /* The remote_target that is current while the quit handler is |
5576 | overridden with remote_serial_quit_handler. */ | |
5577 | static remote_target *curr_quit_handler_target; | |
5578 | ||
5579 | static void | |
5580 | remote_serial_quit_handler () | |
5581 | { | |
5582 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5583 | } | |
5584 | ||
5b6d1e4f PA |
5585 | /* Remove the remote target from the target stack of each inferior |
5586 | that is using it. Upper targets depend on it so remove them | |
5587 | first. */ | |
78a095c3 JK |
5588 | |
5589 | static void | |
5b6d1e4f | 5590 | remote_unpush_target (remote_target *target) |
78a095c3 | 5591 | { |
5b6d1e4f PA |
5592 | /* We have to unpush the target from all inferiors, even those that |
5593 | aren't running. */ | |
5594 | scoped_restore_current_inferior restore_current_inferior; | |
5595 | ||
5596 | for (inferior *inf : all_inferiors (target)) | |
5597 | { | |
5598 | switch_to_inferior_no_thread (inf); | |
5599 | pop_all_targets_at_and_above (process_stratum); | |
5600 | generic_mourn_inferior (); | |
5601 | } | |
78a095c3 | 5602 | } |
be2a5f71 | 5603 | |
048094ac | 5604 | static void |
5b6d1e4f | 5605 | remote_unpush_and_throw (remote_target *target) |
048094ac | 5606 | { |
5b6d1e4f | 5607 | remote_unpush_target (target); |
048094ac PA |
5608 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
5609 | } | |
5610 | ||
f6ac5f3d PA |
5611 | void |
5612 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5613 | { |
6b8edb51 | 5614 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5615 | |
c906108c | 5616 | if (name == 0) |
8a3fe4f8 | 5617 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5618 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5619 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5620 | |
2d717e4f | 5621 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5622 | Ask this question first, before target_preopen has a chance to kill |
5623 | anything. */ | |
55f6301a | 5624 | if (curr_remote != NULL && !target_has_execution ()) |
2d717e4f | 5625 | { |
78a095c3 JK |
5626 | if (from_tty |
5627 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5628 | error (_("Still connected.")); |
5629 | } | |
5630 | ||
78a095c3 | 5631 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5632 | target_preopen (from_tty); |
5633 | ||
ad9a8f3f | 5634 | remote_fileio_reset (); |
1dd41f16 NS |
5635 | reopen_exec_file (); |
5636 | reread_symbols (); | |
5637 | ||
6b8edb51 PA |
5638 | remote_target *remote |
5639 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5640 | target_ops_up target_holder (remote); | |
5641 | ||
5642 | remote_state *rs = remote->get_remote_state (); | |
5643 | ||
5644 | /* See FIXME above. */ | |
5645 | if (!target_async_permitted) | |
5646 | rs->wait_forever_enabled_p = 1; | |
5647 | ||
5d93a237 TT |
5648 | rs->remote_desc = remote_serial_open (name); |
5649 | if (!rs->remote_desc) | |
c906108c SS |
5650 | perror_with_name (name); |
5651 | ||
5652 | if (baud_rate != -1) | |
5653 | { | |
5d93a237 | 5654 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5655 | { |
9b74d5d3 KB |
5656 | /* The requested speed could not be set. Error out to |
5657 | top level after closing remote_desc. Take care to | |
5658 | set remote_desc to NULL to avoid closing remote_desc | |
5659 | more than once. */ | |
5d93a237 TT |
5660 | serial_close (rs->remote_desc); |
5661 | rs->remote_desc = NULL; | |
c906108c SS |
5662 | perror_with_name (name); |
5663 | } | |
5664 | } | |
5665 | ||
236af5e3 | 5666 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5667 | serial_raw (rs->remote_desc); |
c906108c SS |
5668 | |
5669 | /* If there is something sitting in the buffer we might take it as a | |
5670 | response to a command, which would be bad. */ | |
5d93a237 | 5671 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5672 | |
5673 | if (from_tty) | |
5674 | { | |
5675 | puts_filtered ("Remote debugging using "); | |
5676 | puts_filtered (name); | |
5677 | puts_filtered ("\n"); | |
5678 | } | |
d9f719f1 | 5679 | |
6b8edb51 | 5680 | /* Switch to using the remote target now. */ |
dea57a62 | 5681 | push_target (std::move (target_holder)); |
c906108c | 5682 | |
74531fed | 5683 | /* Register extra event sources in the event loop. */ |
6b8edb51 | 5684 | rs->remote_async_inferior_event_token |
db20ebdf SM |
5685 | = create_async_event_handler (remote_async_inferior_event_handler, remote, |
5686 | "remote"); | |
6b8edb51 | 5687 | rs->notif_state = remote_notif_state_allocate (remote); |
74531fed | 5688 | |
be2a5f71 DJ |
5689 | /* Reset the target state; these things will be queried either by |
5690 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5691 | reset_all_packet_configs_support (); |
74531fed | 5692 | rs->cached_wait_status = 0; |
be2a5f71 | 5693 | rs->explicit_packet_size = 0; |
a6f3e723 | 5694 | rs->noack_mode = 0; |
82f73884 | 5695 | rs->extended = extended_p; |
e24a49d8 | 5696 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5697 | rs->ctrlc_pending_p = 0; |
048094ac | 5698 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5699 | |
47f8a51d TT |
5700 | rs->general_thread = not_sent_ptid; |
5701 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5702 | rs->remote_traceframe_number = -1; |
c906108c | 5703 | |
3a00c802 PA |
5704 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5705 | ||
9d1f7ab2 | 5706 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5707 | rs->use_threadinfo_query = 1; |
5708 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5709 | |
dd194f6b | 5710 | rs->readahead_cache.invalidate (); |
80152258 | 5711 | |
c6ebd6cf | 5712 | if (target_async_permitted) |
92d1e331 | 5713 | { |
92d1e331 DJ |
5714 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5715 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5716 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5717 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5718 | around this. Eventually a mechanism that allows |
92d1e331 | 5719 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5720 | implemented. */ |
6b8edb51 | 5721 | rs->wait_forever_enabled_p = 0; |
92d1e331 DJ |
5722 | } |
5723 | ||
23860348 | 5724 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5725 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5726 | |
36918e70 | 5727 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5728 | target (we'd otherwise be in an inconsistent state) and then |
5729 | propogate the error on up the exception chain. This ensures that | |
5730 | the caller doesn't stumble along blindly assuming that the | |
5731 | function succeeded. The CLI doesn't have this problem but other | |
5732 | UI's, such as MI do. | |
36918e70 AC |
5733 | |
5734 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5735 | this function should return an error indication letting the | |
ce2826aa | 5736 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5737 | ``target remote'' is directly wired to this function making that |
5738 | impossible. On a positive note, the CLI side of this problem has | |
5739 | been fixed - the function set_cmd_context() makes it possible for | |
5740 | all the ``target ....'' commands to share a common callback | |
5741 | function. See cli-dump.c. */ | |
109c3e39 | 5742 | { |
2d717e4f | 5743 | |
a70b8144 | 5744 | try |
04bd08de | 5745 | { |
6b8edb51 | 5746 | remote->start_remote (from_tty, extended_p); |
04bd08de | 5747 | } |
230d2906 | 5748 | catch (const gdb_exception &ex) |
109c3e39 | 5749 | { |
c8d104ad PA |
5750 | /* Pop the partially set up target - unless something else did |
5751 | already before throwing the exception. */ | |
6b8edb51 | 5752 | if (ex.error != TARGET_CLOSE_ERROR) |
5b6d1e4f | 5753 | remote_unpush_target (remote); |
eedc3f4f | 5754 | throw; |
109c3e39 AC |
5755 | } |
5756 | } | |
c906108c | 5757 | |
6b8edb51 | 5758 | remote_btrace_reset (rs); |
f4abbc16 | 5759 | |
c6ebd6cf | 5760 | if (target_async_permitted) |
6b8edb51 | 5761 | rs->wait_forever_enabled_p = 1; |
43ff13b4 JM |
5762 | } |
5763 | ||
de0d863e DB |
5764 | /* Detach the specified process. */ |
5765 | ||
6b8edb51 PA |
5766 | void |
5767 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
5768 | { |
5769 | struct remote_state *rs = get_remote_state (); | |
5770 | ||
4c7333b3 PA |
5771 | /* This should not be necessary, but the handling for D;PID in |
5772 | GDBserver versions prior to 8.2 incorrectly assumes that the | |
5773 | selected process points to the same process we're detaching, | |
5774 | leading to misbehavior (and possibly GDBserver crashing) when it | |
5775 | does not. Since it's easy and cheap, work around it by forcing | |
5776 | GDBserver to select GDB's current process. */ | |
5777 | set_general_process (); | |
5778 | ||
de0d863e | 5779 | if (remote_multi_process_p (rs)) |
8d64371b | 5780 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "D;%x", pid); |
de0d863e | 5781 | else |
8d64371b | 5782 | strcpy (rs->buf.data (), "D"); |
de0d863e DB |
5783 | |
5784 | putpkt (rs->buf); | |
8d64371b | 5785 | getpkt (&rs->buf, 0); |
de0d863e DB |
5786 | |
5787 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5788 | ; | |
5789 | else if (rs->buf[0] == '\0') | |
5790 | error (_("Remote doesn't know how to detach")); | |
5791 | else | |
5792 | error (_("Can't detach process.")); | |
5793 | } | |
5794 | ||
5795 | /* This detaches a program to which we previously attached, using | |
5796 | inferior_ptid to identify the process. After this is done, GDB | |
5797 | can be used to debug some other program. We better not have left | |
5798 | any breakpoints in the target program or it'll die when it hits | |
5799 | one. */ | |
c906108c | 5800 | |
6b8edb51 | 5801 | void |
00431a78 | 5802 | remote_target::remote_detach_1 (inferior *inf, int from_tty) |
c906108c | 5803 | { |
e99b03dc | 5804 | int pid = inferior_ptid.pid (); |
d01949b6 | 5805 | struct remote_state *rs = get_remote_state (); |
de0d863e | 5806 | int is_fork_parent; |
c906108c | 5807 | |
55f6301a | 5808 | if (!target_has_execution ()) |
2d717e4f DJ |
5809 | error (_("No process to detach from.")); |
5810 | ||
0f48b757 | 5811 | target_announce_detach (from_tty); |
7cee1e54 | 5812 | |
c906108c | 5813 | /* Tell the remote target to detach. */ |
de0d863e | 5814 | remote_detach_pid (pid); |
82f73884 | 5815 | |
8020350c | 5816 | /* Exit only if this is the only active inferior. */ |
5b6d1e4f | 5817 | if (from_tty && !rs->extended && number_of_live_inferiors (this) == 1) |
7cee1e54 | 5818 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5819 | |
5b6d1e4f | 5820 | thread_info *tp = find_thread_ptid (this, inferior_ptid); |
00431a78 | 5821 | |
de0d863e DB |
5822 | /* Check to see if we are detaching a fork parent. Note that if we |
5823 | are detaching a fork child, tp == NULL. */ | |
5824 | is_fork_parent = (tp != NULL | |
5825 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5826 | ||
5827 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5828 | breakpoints that should be available for the followed inferior. */ | |
5829 | if (!is_fork_parent) | |
f67c0c91 | 5830 | { |
249b5733 PA |
5831 | /* Save the pid as a string before mourning, since that will |
5832 | unpush the remote target, and we need the string after. */ | |
f2907e49 | 5833 | std::string infpid = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
5834 | |
5835 | target_mourn_inferior (inferior_ptid); | |
5836 | if (print_inferior_events) | |
5837 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
5838 | inf->num, infpid.c_str ()); | |
5839 | } | |
de0d863e DB |
5840 | else |
5841 | { | |
0ac55310 | 5842 | switch_to_no_thread (); |
00431a78 | 5843 | detach_inferior (current_inferior ()); |
de0d863e | 5844 | } |
2d717e4f DJ |
5845 | } |
5846 | ||
f6ac5f3d PA |
5847 | void |
5848 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5849 | { |
00431a78 | 5850 | remote_detach_1 (inf, from_tty); |
2d717e4f DJ |
5851 | } |
5852 | ||
f6ac5f3d PA |
5853 | void |
5854 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5855 | { |
00431a78 | 5856 | remote_detach_1 (inf, from_tty); |
de0d863e DB |
5857 | } |
5858 | ||
5859 | /* Target follow-fork function for remote targets. On entry, and | |
5860 | at return, the current inferior is the fork parent. | |
5861 | ||
5862 | Note that although this is currently only used for extended-remote, | |
5863 | it is named remote_follow_fork in anticipation of using it for the | |
5864 | remote target as well. */ | |
5865 | ||
5ab2fbf1 SM |
5866 | bool |
5867 | remote_target::follow_fork (bool follow_child, bool detach_fork) | |
de0d863e DB |
5868 | { |
5869 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5870 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5871 | |
c269dbdb DB |
5872 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5873 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5874 | { |
5875 | /* When following the parent and detaching the child, we detach | |
5876 | the child here. For the case of following the child and | |
5877 | detaching the parent, the detach is done in the target- | |
5878 | independent follow fork code in infrun.c. We can't use | |
5879 | target_detach when detaching an unfollowed child because | |
5880 | the client side doesn't know anything about the child. */ | |
5881 | if (detach_fork && !follow_child) | |
5882 | { | |
5883 | /* Detach the fork child. */ | |
5884 | ptid_t child_ptid; | |
5885 | pid_t child_pid; | |
5886 | ||
5887 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
e99b03dc | 5888 | child_pid = child_ptid.pid (); |
de0d863e DB |
5889 | |
5890 | remote_detach_pid (child_pid); | |
de0d863e DB |
5891 | } |
5892 | } | |
5ab2fbf1 SM |
5893 | |
5894 | return false; | |
c906108c SS |
5895 | } |
5896 | ||
94585166 DB |
5897 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5898 | in the program space of the new inferior. On entry and at return the | |
5899 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5900 | inferior, which may be the same as the exec'ing inferior unless | |
5901 | follow-exec-mode is "new". */ | |
5902 | ||
f6ac5f3d | 5903 | void |
4ca51187 | 5904 | remote_target::follow_exec (struct inferior *inf, const char *execd_pathname) |
94585166 DB |
5905 | { |
5906 | /* We know that this is a target file name, so if it has the "target:" | |
5907 | prefix we strip it off before saving it in the program space. */ | |
5908 | if (is_target_filename (execd_pathname)) | |
5909 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5910 | ||
5911 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5912 | } | |
5913 | ||
6ad8ae5c DJ |
5914 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5915 | ||
f6ac5f3d PA |
5916 | void |
5917 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 5918 | { |
43ff13b4 | 5919 | if (args) |
2d717e4f | 5920 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5921 | |
8020350c | 5922 | /* Make sure we unpush even the extended remote targets. Calling |
5b6d1e4f PA |
5923 | target_mourn_inferior won't unpush, and |
5924 | remote_target::mourn_inferior won't unpush if there is more than | |
5925 | one inferior left. */ | |
5926 | remote_unpush_target (this); | |
2d717e4f | 5927 | |
43ff13b4 JM |
5928 | if (from_tty) |
5929 | puts_filtered ("Ending remote debugging.\n"); | |
5930 | } | |
5931 | ||
2d717e4f DJ |
5932 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5933 | be chatty about it. */ | |
5934 | ||
f6ac5f3d PA |
5935 | void |
5936 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
5937 | { |
5938 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5939 | int pid; |
96ef3384 | 5940 | char *wait_status = NULL; |
2d717e4f | 5941 | |
74164c56 | 5942 | pid = parse_pid_to_attach (args); |
2d717e4f | 5943 | |
74164c56 JK |
5944 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5945 | way as in other targets. */ | |
2d717e4f | 5946 | |
4082afcc | 5947 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5948 | error (_("This target does not support attaching to a process")); |
5949 | ||
7cee1e54 PA |
5950 | if (from_tty) |
5951 | { | |
d9fa87f4 | 5952 | const char *exec_file = get_exec_file (0); |
7cee1e54 PA |
5953 | |
5954 | if (exec_file) | |
5955 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
a068643d | 5956 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
5957 | else |
5958 | printf_unfiltered (_("Attaching to %s\n"), | |
a068643d | 5959 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
5960 | } |
5961 | ||
8d64371b | 5962 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f | 5963 | putpkt (rs->buf); |
8d64371b | 5964 | getpkt (&rs->buf, 0); |
2d717e4f | 5965 | |
4082afcc PA |
5966 | switch (packet_ok (rs->buf, |
5967 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5968 | { |
4082afcc | 5969 | case PACKET_OK: |
6efcd9a8 | 5970 | if (!target_is_non_stop_p ()) |
74531fed PA |
5971 | { |
5972 | /* Save the reply for later. */ | |
8d64371b TT |
5973 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
5974 | strcpy (wait_status, rs->buf.data ()); | |
74531fed | 5975 | } |
8d64371b | 5976 | else if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 5977 | error (_("Attaching to %s failed with: %s"), |
a068643d | 5978 | target_pid_to_str (ptid_t (pid)).c_str (), |
8d64371b | 5979 | rs->buf.data ()); |
4082afcc PA |
5980 | break; |
5981 | case PACKET_UNKNOWN: | |
5982 | error (_("This target does not support attaching to a process")); | |
5983 | default: | |
50fa3001 SDJ |
5984 | error (_("Attaching to %s failed"), |
5985 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
2d717e4f | 5986 | } |
2d717e4f | 5987 | |
0ac55310 | 5988 | switch_to_inferior_no_thread (remote_add_inferior (false, pid, 1, 0)); |
bad34192 | 5989 | |
f2907e49 | 5990 | inferior_ptid = ptid_t (pid); |
79d7f229 | 5991 | |
6efcd9a8 | 5992 | if (target_is_non_stop_p ()) |
bad34192 | 5993 | { |
bad34192 | 5994 | /* Get list of threads. */ |
f6ac5f3d | 5995 | update_thread_list (); |
82f73884 | 5996 | |
0ac55310 PA |
5997 | thread_info *thread = first_thread_of_inferior (current_inferior ()); |
5998 | if (thread != nullptr) | |
5999 | switch_to_thread (thread); | |
bad34192 PA |
6000 | |
6001 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 6002 | record_currthread (rs, minus_one_ptid); |
bad34192 | 6003 | } |
74531fed | 6004 | else |
bad34192 | 6005 | { |
0ac55310 PA |
6006 | /* Now, if we have thread information, update the main thread's |
6007 | ptid. */ | |
6008 | ptid_t curr_ptid = remote_current_thread (ptid_t (pid)); | |
bad34192 PA |
6009 | |
6010 | /* Add the main thread to the thread list. */ | |
0ac55310 PA |
6011 | thread_info *thr = add_thread_silent (this, curr_ptid); |
6012 | ||
6013 | switch_to_thread (thr); | |
6014 | ||
00aecdcf PA |
6015 | /* Don't consider the thread stopped until we've processed the |
6016 | saved stop reply. */ | |
5b6d1e4f | 6017 | set_executing (this, thr->ptid, true); |
bad34192 | 6018 | } |
c0a2216e | 6019 | |
96ef3384 UW |
6020 | /* Next, if the target can specify a description, read it. We do |
6021 | this before anything involving memory or registers. */ | |
6022 | target_find_description (); | |
6023 | ||
6efcd9a8 | 6024 | if (!target_is_non_stop_p ()) |
74531fed PA |
6025 | { |
6026 | /* Use the previously fetched status. */ | |
6027 | gdb_assert (wait_status != NULL); | |
6028 | ||
6029 | if (target_can_async_p ()) | |
6030 | { | |
722247f1 | 6031 | struct notif_event *reply |
6b8edb51 | 6032 | = remote_notif_parse (this, ¬if_client_stop, wait_status); |
74531fed | 6033 | |
722247f1 | 6034 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 6035 | |
6a3753b3 | 6036 | target_async (1); |
74531fed PA |
6037 | } |
6038 | else | |
6039 | { | |
6040 | gdb_assert (wait_status != NULL); | |
8d64371b | 6041 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
6042 | rs->cached_wait_status = 1; |
6043 | } | |
6044 | } | |
6045 | else | |
6046 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
6047 | } |
6048 | ||
b9c1d481 AS |
6049 | /* Implementation of the to_post_attach method. */ |
6050 | ||
f6ac5f3d PA |
6051 | void |
6052 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 6053 | { |
6efcd9a8 PA |
6054 | /* Get text, data & bss offsets. */ |
6055 | get_offsets (); | |
6056 | ||
b9c1d481 AS |
6057 | /* In certain cases GDB might not have had the chance to start |
6058 | symbol lookup up until now. This could happen if the debugged | |
6059 | binary is not using shared libraries, the vsyscall page is not | |
6060 | present (on Linux) and the binary itself hadn't changed since the | |
6061 | debugging process was started. */ | |
a42d7dd8 | 6062 | if (current_program_space->symfile_object_file != NULL) |
b9c1d481 AS |
6063 | remote_check_symbols(); |
6064 | } | |
6065 | ||
c906108c | 6066 | \f |
506fb367 DJ |
6067 | /* Check for the availability of vCont. This function should also check |
6068 | the response. */ | |
c906108c | 6069 | |
6b8edb51 PA |
6070 | void |
6071 | remote_target::remote_vcont_probe () | |
c906108c | 6072 | { |
6b8edb51 | 6073 | remote_state *rs = get_remote_state (); |
2e9f7625 | 6074 | char *buf; |
6d820c5c | 6075 | |
8d64371b | 6076 | strcpy (rs->buf.data (), "vCont?"); |
2e9f7625 | 6077 | putpkt (rs->buf); |
8d64371b TT |
6078 | getpkt (&rs->buf, 0); |
6079 | buf = rs->buf.data (); | |
c906108c | 6080 | |
506fb367 | 6081 | /* Make sure that the features we assume are supported. */ |
61012eef | 6082 | if (startswith (buf, "vCont")) |
506fb367 DJ |
6083 | { |
6084 | char *p = &buf[5]; | |
750ce8d1 | 6085 | int support_c, support_C; |
506fb367 | 6086 | |
750ce8d1 YQ |
6087 | rs->supports_vCont.s = 0; |
6088 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
6089 | support_c = 0; |
6090 | support_C = 0; | |
d458bd84 | 6091 | rs->supports_vCont.t = 0; |
c1e36e3e | 6092 | rs->supports_vCont.r = 0; |
506fb367 DJ |
6093 | while (p && *p == ';') |
6094 | { | |
6095 | p++; | |
6096 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 6097 | rs->supports_vCont.s = 1; |
506fb367 | 6098 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 6099 | rs->supports_vCont.S = 1; |
506fb367 DJ |
6100 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6101 | support_c = 1; | |
6102 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
6103 | support_C = 1; | |
74531fed | 6104 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 6105 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
6106 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
6107 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
6108 | |
6109 | p = strchr (p, ';'); | |
6110 | } | |
c906108c | 6111 | |
750ce8d1 YQ |
6112 | /* If c, and C are not all supported, we can't use vCont. Clearing |
6113 | BUF will make packet_ok disable the packet. */ | |
6114 | if (!support_c || !support_C) | |
506fb367 DJ |
6115 | buf[0] = 0; |
6116 | } | |
c906108c | 6117 | |
8d64371b | 6118 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCont]); |
5b6d1e4f | 6119 | rs->supports_vCont_probed = true; |
506fb367 | 6120 | } |
c906108c | 6121 | |
0d8f58ca PA |
6122 | /* Helper function for building "vCont" resumptions. Write a |
6123 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
6124 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
6125 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
6126 | resumed thread should be single-stepped and/or signalled. If PTID | |
6127 | equals minus_one_ptid, then all threads are resumed; if PTID | |
6128 | represents a process, then all threads of the process are resumed; | |
6129 | the thread to be stepped and/or signalled is given in the global | |
6130 | INFERIOR_PTID. */ | |
6131 | ||
6b8edb51 PA |
6132 | char * |
6133 | remote_target::append_resumption (char *p, char *endp, | |
6134 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
6135 | { |
6136 | struct remote_state *rs = get_remote_state (); | |
6137 | ||
a493e3e2 | 6138 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 6139 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
6140 | else if (step |
6141 | /* GDB is willing to range step. */ | |
6142 | && use_range_stepping | |
6143 | /* Target supports range stepping. */ | |
6144 | && rs->supports_vCont.r | |
6145 | /* We don't currently support range stepping multiple | |
6146 | threads with a wildcard (though the protocol allows it, | |
6147 | so stubs shouldn't make an active effort to forbid | |
6148 | it). */ | |
0e998d96 | 6149 | && !(remote_multi_process_p (rs) && ptid.is_pid ())) |
c1e36e3e PA |
6150 | { |
6151 | struct thread_info *tp; | |
6152 | ||
d7e15655 | 6153 | if (ptid == minus_one_ptid) |
c1e36e3e PA |
6154 | { |
6155 | /* If we don't know about the target thread's tid, then | |
6156 | we're resuming magic_null_ptid (see caller). */ | |
5b6d1e4f | 6157 | tp = find_thread_ptid (this, magic_null_ptid); |
c1e36e3e PA |
6158 | } |
6159 | else | |
5b6d1e4f | 6160 | tp = find_thread_ptid (this, ptid); |
c1e36e3e PA |
6161 | gdb_assert (tp != NULL); |
6162 | ||
6163 | if (tp->control.may_range_step) | |
6164 | { | |
6165 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
6166 | ||
6167 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6168 | phex_nz (tp->control.step_range_start, | |
6169 | addr_size), | |
6170 | phex_nz (tp->control.step_range_end, | |
6171 | addr_size)); | |
6172 | } | |
6173 | else | |
6174 | p += xsnprintf (p, endp - p, ";s"); | |
6175 | } | |
0d8f58ca PA |
6176 | else if (step) |
6177 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6178 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6179 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6180 | else | |
6181 | p += xsnprintf (p, endp - p, ";c"); | |
6182 | ||
0e998d96 | 6183 | if (remote_multi_process_p (rs) && ptid.is_pid ()) |
0d8f58ca PA |
6184 | { |
6185 | ptid_t nptid; | |
6186 | ||
6187 | /* All (-1) threads of process. */ | |
e99b03dc | 6188 | nptid = ptid_t (ptid.pid (), -1, 0); |
0d8f58ca PA |
6189 | |
6190 | p += xsnprintf (p, endp - p, ":"); | |
6191 | p = write_ptid (p, endp, nptid); | |
6192 | } | |
d7e15655 | 6193 | else if (ptid != minus_one_ptid) |
0d8f58ca PA |
6194 | { |
6195 | p += xsnprintf (p, endp - p, ":"); | |
6196 | p = write_ptid (p, endp, ptid); | |
6197 | } | |
6198 | ||
6199 | return p; | |
6200 | } | |
6201 | ||
799a2abe PA |
6202 | /* Clear the thread's private info on resume. */ |
6203 | ||
6204 | static void | |
6205 | resume_clear_thread_private_info (struct thread_info *thread) | |
6206 | { | |
6207 | if (thread->priv != NULL) | |
6208 | { | |
7aabaf9d SM |
6209 | remote_thread_info *priv = get_remote_thread_info (thread); |
6210 | ||
6211 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6212 | priv->watch_data_address = 0; | |
799a2abe PA |
6213 | } |
6214 | } | |
6215 | ||
e5ef252a PA |
6216 | /* Append a vCont continue-with-signal action for threads that have a |
6217 | non-zero stop signal. */ | |
6218 | ||
6b8edb51 PA |
6219 | char * |
6220 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6221 | ptid_t ptid) | |
e5ef252a | 6222 | { |
5b6d1e4f | 6223 | for (thread_info *thread : all_non_exited_threads (this, ptid)) |
08036331 | 6224 | if (inferior_ptid != thread->ptid |
70509625 | 6225 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
6226 | { |
6227 | p = append_resumption (p, endp, thread->ptid, | |
6228 | 0, thread->suspend.stop_signal); | |
6229 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 6230 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6231 | } |
6232 | ||
6233 | return p; | |
6234 | } | |
6235 | ||
7b68ffbb PA |
6236 | /* Set the target running, using the packets that use Hc |
6237 | (c/s/C/S). */ | |
6238 | ||
6b8edb51 PA |
6239 | void |
6240 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6241 | gdb_signal siggnal) | |
7b68ffbb PA |
6242 | { |
6243 | struct remote_state *rs = get_remote_state (); | |
7b68ffbb PA |
6244 | char *buf; |
6245 | ||
6246 | rs->last_sent_signal = siggnal; | |
6247 | rs->last_sent_step = step; | |
6248 | ||
6249 | /* The c/s/C/S resume packets use Hc, so set the continue | |
6250 | thread. */ | |
d7e15655 | 6251 | if (ptid == minus_one_ptid) |
7b68ffbb PA |
6252 | set_continue_thread (any_thread_ptid); |
6253 | else | |
6254 | set_continue_thread (ptid); | |
6255 | ||
5b6d1e4f | 6256 | for (thread_info *thread : all_non_exited_threads (this)) |
7b68ffbb PA |
6257 | resume_clear_thread_private_info (thread); |
6258 | ||
8d64371b | 6259 | buf = rs->buf.data (); |
6b8edb51 | 6260 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6261 | { |
6262 | /* We don't pass signals to the target in reverse exec mode. */ | |
6263 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
6264 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
6265 | siggnal); | |
6266 | ||
6267 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
6268 | error (_("Remote reverse-step not supported.")); | |
6269 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
6270 | error (_("Remote reverse-continue not supported.")); | |
6271 | ||
6272 | strcpy (buf, step ? "bs" : "bc"); | |
6273 | } | |
6274 | else if (siggnal != GDB_SIGNAL_0) | |
6275 | { | |
6276 | buf[0] = step ? 'S' : 'C'; | |
6277 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
6278 | buf[2] = tohex (((int) siggnal) & 0xf); | |
6279 | buf[3] = '\0'; | |
6280 | } | |
6281 | else | |
6282 | strcpy (buf, step ? "s" : "c"); | |
6283 | ||
6284 | putpkt (buf); | |
6285 | } | |
6286 | ||
506fb367 DJ |
6287 | /* Resume the remote inferior by using a "vCont" packet. The thread |
6288 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
6289 | resumed thread should be single-stepped and/or signalled. If PTID |
6290 | equals minus_one_ptid, then all threads are resumed; the thread to | |
6291 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
6292 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 6293 | |
7b68ffbb PA |
6294 | This function issues a strict subset of all possible vCont commands |
6295 | at the moment. */ | |
44eaed12 | 6296 | |
6b8edb51 PA |
6297 | int |
6298 | remote_target::remote_resume_with_vcont (ptid_t ptid, int step, | |
6299 | enum gdb_signal siggnal) | |
506fb367 DJ |
6300 | { |
6301 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
6302 | char *p; |
6303 | char *endp; | |
44eaed12 | 6304 | |
7b68ffbb | 6305 | /* No reverse execution actions defined for vCont. */ |
6b8edb51 | 6306 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6307 | return 0; |
6308 | ||
4082afcc | 6309 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6310 | remote_vcont_probe (); |
44eaed12 | 6311 | |
4082afcc | 6312 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 6313 | return 0; |
44eaed12 | 6314 | |
8d64371b TT |
6315 | p = rs->buf.data (); |
6316 | endp = p + get_remote_packet_size (); | |
82f73884 | 6317 | |
506fb367 DJ |
6318 | /* If we could generate a wider range of packets, we'd have to worry |
6319 | about overflowing BUF. Should there be a generic | |
6320 | "multi-part-packet" packet? */ | |
6321 | ||
0d8f58ca PA |
6322 | p += xsnprintf (p, endp - p, "vCont"); |
6323 | ||
d7e15655 | 6324 | if (ptid == magic_null_ptid) |
c906108c | 6325 | { |
79d7f229 PA |
6326 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
6327 | so we don't have any TID numbers the inferior will | |
6328 | understand. Make sure to only send forms that do not specify | |
6329 | a TID. */ | |
a9cbf802 | 6330 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 6331 | } |
d7e15655 | 6332 | else if (ptid == minus_one_ptid || ptid.is_pid ()) |
506fb367 | 6333 | { |
0d8f58ca PA |
6334 | /* Resume all threads (of all processes, or of a single |
6335 | process), with preference for INFERIOR_PTID. This assumes | |
6336 | inferior_ptid belongs to the set of all threads we are about | |
6337 | to resume. */ | |
a493e3e2 | 6338 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 6339 | { |
0d8f58ca PA |
6340 | /* Step inferior_ptid, with or without signal. */ |
6341 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 6342 | } |
0d8f58ca | 6343 | |
e5ef252a PA |
6344 | /* Also pass down any pending signaled resumption for other |
6345 | threads not the current. */ | |
6346 | p = append_pending_thread_resumptions (p, endp, ptid); | |
6347 | ||
0d8f58ca | 6348 | /* And continue others without a signal. */ |
a493e3e2 | 6349 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
6350 | } |
6351 | else | |
506fb367 DJ |
6352 | { |
6353 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 6354 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 6355 | } |
c906108c | 6356 | |
8d64371b | 6357 | gdb_assert (strlen (rs->buf.data ()) < get_remote_packet_size ()); |
82f73884 | 6358 | putpkt (rs->buf); |
506fb367 | 6359 | |
6efcd9a8 | 6360 | if (target_is_non_stop_p ()) |
74531fed PA |
6361 | { |
6362 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6363 | reply will be reported asynchronously by means of a `%Stop' | |
6364 | notification. */ | |
8d64371b TT |
6365 | getpkt (&rs->buf, 0); |
6366 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6367 | error (_("Unexpected vCont reply in non-stop mode: %s"), | |
6368 | rs->buf.data ()); | |
74531fed PA |
6369 | } |
6370 | ||
506fb367 | 6371 | return 1; |
c906108c | 6372 | } |
43ff13b4 | 6373 | |
506fb367 DJ |
6374 | /* Tell the remote machine to resume. */ |
6375 | ||
f6ac5f3d PA |
6376 | void |
6377 | remote_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal) | |
43ff13b4 | 6378 | { |
d01949b6 | 6379 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6380 | |
85ad3aaf PA |
6381 | /* When connected in non-stop mode, the core resumes threads |
6382 | individually. Resuming remote threads directly in target_resume | |
6383 | would thus result in sending one packet per thread. Instead, to | |
6384 | minimize roundtrip latency, here we just store the resume | |
c9d22089 SM |
6385 | request (put the thread in RESUMED_PENDING_VCONT state); the actual remote |
6386 | resumption will be done in remote_target::commit_resume, where we'll be | |
6387 | able to do vCont action coalescing. */ | |
f6ac5f3d | 6388 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6389 | { |
7aabaf9d | 6390 | remote_thread_info *remote_thr; |
85ad3aaf | 6391 | |
d7e15655 | 6392 | if (minus_one_ptid == ptid || ptid.is_pid ()) |
5b6d1e4f | 6393 | remote_thr = get_remote_thread_info (this, inferior_ptid); |
85ad3aaf | 6394 | else |
5b6d1e4f | 6395 | remote_thr = get_remote_thread_info (this, ptid); |
7aabaf9d | 6396 | |
c9d22089 SM |
6397 | /* We don't expect the core to ask to resume an already resumed (from |
6398 | its point of view) thread. */ | |
6399 | gdb_assert (remote_thr->resume_state () == resume_state::NOT_RESUMED); | |
6400 | ||
6401 | remote_thr->set_resumed_pending_vcont (step, siggnal); | |
85ad3aaf PA |
6402 | return; |
6403 | } | |
6404 | ||
722247f1 YQ |
6405 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6406 | (explained in remote-notif.c:handle_notification) so | |
6407 | remote_notif_process is not called. We need find a place where | |
6408 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6409 | before resuming inferior, because inferior was stopped and no RSP | |
6410 | traffic at that moment. */ | |
6efcd9a8 | 6411 | if (!target_is_non_stop_p ()) |
5965e028 | 6412 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6413 | |
f6ac5f3d | 6414 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6415 | |
7b68ffbb PA |
6416 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
6417 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
6b8edb51 | 6418 | remote_resume_with_hc (ptid, step, siggnal); |
43ff13b4 | 6419 | |
c9d22089 SM |
6420 | /* Update resumed state tracked by the remote target. */ |
6421 | for (thread_info *tp : all_non_exited_threads (this, ptid)) | |
6422 | get_remote_thread_info (tp)->set_resumed (); | |
6423 | ||
2acceee2 | 6424 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
6425 | with the event loop. NOTE: this is the one place where all the |
6426 | execution commands end up. We could alternatively do this in each | |
23860348 | 6427 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
6428 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
6429 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 6430 | NOT asynchronously. */ |
362646f5 | 6431 | if (target_can_async_p ()) |
6a3753b3 | 6432 | target_async (1); |
e24a49d8 PA |
6433 | |
6434 | /* We've just told the target to resume. The remote server will | |
6435 | wait for the inferior to stop, and then send a stop reply. In | |
6436 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6437 | because the stub wouldn't be ready to process it. This applies |
6438 | only to the base all-stop protocol, however. In non-stop (which | |
6439 | only supports vCont), the stub replies with an "OK", and is | |
6440 | immediate able to process further serial input. */ | |
6efcd9a8 | 6441 | if (!target_is_non_stop_p ()) |
74531fed | 6442 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6443 | } |
85ad3aaf | 6444 | |
85ad3aaf PA |
6445 | static int is_pending_fork_parent_thread (struct thread_info *thread); |
6446 | ||
6447 | /* Private per-inferior info for target remote processes. */ | |
6448 | ||
089354bb | 6449 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6450 | { |
6451 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6452 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6453 | }; |
6454 | ||
089354bb SM |
6455 | /* Get the remote private inferior data associated to INF. */ |
6456 | ||
6457 | static remote_inferior * | |
6458 | get_remote_inferior (inferior *inf) | |
6459 | { | |
6460 | if (inf->priv == NULL) | |
6461 | inf->priv.reset (new remote_inferior); | |
6462 | ||
6463 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6464 | } | |
6465 | ||
f5db4863 | 6466 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6467 | outgoing packet buffer. This is used to send multiple vCont |
6468 | packets if we have more actions than would fit a single packet. */ | |
6469 | ||
f5db4863 | 6470 | class vcont_builder |
85ad3aaf | 6471 | { |
f5db4863 | 6472 | public: |
6b8edb51 PA |
6473 | explicit vcont_builder (remote_target *remote) |
6474 | : m_remote (remote) | |
f5db4863 PA |
6475 | { |
6476 | restart (); | |
6477 | } | |
6478 | ||
6479 | void flush (); | |
6480 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6481 | ||
6482 | private: | |
6483 | void restart (); | |
6484 | ||
6b8edb51 PA |
6485 | /* The remote target. */ |
6486 | remote_target *m_remote; | |
6487 | ||
85ad3aaf PA |
6488 | /* Pointer to the first action. P points here if no action has been |
6489 | appended yet. */ | |
f5db4863 | 6490 | char *m_first_action; |
85ad3aaf PA |
6491 | |
6492 | /* Where the next action will be appended. */ | |
f5db4863 | 6493 | char *m_p; |
85ad3aaf PA |
6494 | |
6495 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6496 | char *m_endp; |
85ad3aaf PA |
6497 | }; |
6498 | ||
6499 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6500 | ||
f5db4863 PA |
6501 | void |
6502 | vcont_builder::restart () | |
85ad3aaf | 6503 | { |
6b8edb51 | 6504 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6505 | |
8d64371b TT |
6506 | m_p = rs->buf.data (); |
6507 | m_endp = m_p + m_remote->get_remote_packet_size (); | |
f5db4863 PA |
6508 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6509 | m_first_action = m_p; | |
85ad3aaf PA |
6510 | } |
6511 | ||
6512 | /* If the vCont packet being built has any action, send it to the | |
6513 | remote end. */ | |
6514 | ||
f5db4863 PA |
6515 | void |
6516 | vcont_builder::flush () | |
85ad3aaf PA |
6517 | { |
6518 | struct remote_state *rs; | |
6519 | ||
f5db4863 | 6520 | if (m_p == m_first_action) |
85ad3aaf PA |
6521 | return; |
6522 | ||
6b8edb51 PA |
6523 | rs = m_remote->get_remote_state (); |
6524 | m_remote->putpkt (rs->buf); | |
8d64371b TT |
6525 | m_remote->getpkt (&rs->buf, 0); |
6526 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6527 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf.data ()); | |
85ad3aaf PA |
6528 | } |
6529 | ||
6530 | /* The largest action is range-stepping, with its two addresses. This | |
6531 | is more than sufficient. If a new, bigger action is created, it'll | |
6532 | quickly trigger a failed assertion in append_resumption (and we'll | |
6533 | just bump this). */ | |
6534 | #define MAX_ACTION_SIZE 200 | |
6535 | ||
6536 | /* Append a new vCont action in the outgoing packet being built. If | |
6537 | the action doesn't fit the packet along with previous actions, push | |
6538 | what we've got so far to the remote end and start over a new vCont | |
6539 | packet (with the new action). */ | |
6540 | ||
f5db4863 PA |
6541 | void |
6542 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6543 | { |
6544 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6545 | |
6b8edb51 PA |
6546 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6547 | ptid, step, siggnal); | |
85ad3aaf PA |
6548 | |
6549 | /* Check whether this new action would fit in the vCont packet along | |
6550 | with previous actions. If not, send what we've got so far and | |
6551 | start a new vCont packet. */ | |
f5db4863 PA |
6552 | size_t rsize = endp - buf; |
6553 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6554 | { |
f5db4863 PA |
6555 | flush (); |
6556 | restart (); | |
85ad3aaf PA |
6557 | |
6558 | /* Should now fit. */ | |
f5db4863 | 6559 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6560 | } |
6561 | ||
f5db4863 PA |
6562 | memcpy (m_p, buf, rsize); |
6563 | m_p += rsize; | |
6564 | *m_p = '\0'; | |
85ad3aaf PA |
6565 | } |
6566 | ||
6567 | /* to_commit_resume implementation. */ | |
6568 | ||
f6ac5f3d PA |
6569 | void |
6570 | remote_target::commit_resume () | |
85ad3aaf | 6571 | { |
85ad3aaf PA |
6572 | int any_process_wildcard; |
6573 | int may_global_wildcard_vcont; | |
85ad3aaf PA |
6574 | |
6575 | /* If connected in all-stop mode, we'd send the remote resume | |
6576 | request directly from remote_resume. Likewise if | |
6577 | reverse-debugging, as there are no defined vCont actions for | |
6578 | reverse execution. */ | |
f6ac5f3d | 6579 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6580 | return; |
6581 | ||
6582 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6583 | instead of resuming all threads of each process individually. | |
6584 | However, if any thread of a process must remain halted, we can't | |
6585 | send wildcard resumes and must send one action per thread. | |
6586 | ||
6587 | Care must be taken to not resume threads/processes the server | |
6588 | side already told us are stopped, but the core doesn't know about | |
6589 | yet, because the events are still in the vStopped notification | |
6590 | queue. For example: | |
6591 | ||
6592 | #1 => vCont s:p1.1;c | |
6593 | #2 <= OK | |
6594 | #3 <= %Stopped T05 p1.1 | |
6595 | #4 => vStopped | |
6596 | #5 <= T05 p1.2 | |
6597 | #6 => vStopped | |
6598 | #7 <= OK | |
6599 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6600 | #9 => vCont s:p1.1;c | |
6601 | ||
6602 | The last vCont above would resume thread p1.2 by mistake, because | |
6603 | the server has no idea that the event for p1.2 had not been | |
6604 | handled yet. | |
6605 | ||
6606 | The server side must similarly ignore resume actions for the | |
6607 | thread that has a pending %Stopped notification (and any other | |
6608 | threads with events pending), until GDB acks the notification | |
6609 | with vStopped. Otherwise, e.g., the following case is | |
6610 | mishandled: | |
6611 | ||
6612 | #1 => g (or any other packet) | |
6613 | #2 <= [registers] | |
6614 | #3 <= %Stopped T05 p1.2 | |
6615 | #4 => vCont s:p1.1;c | |
6616 | #5 <= OK | |
6617 | ||
6618 | Above, the server must not resume thread p1.2. GDB can't know | |
6619 | that p1.2 stopped until it acks the %Stopped notification, and | |
6620 | since from GDB's perspective all threads should be running, it | |
6621 | sends a "c" action. | |
6622 | ||
6623 | Finally, special care must also be given to handling fork/vfork | |
6624 | events. A (v)fork event actually tells us that two processes | |
6625 | stopped -- the parent and the child. Until we follow the fork, | |
6626 | we must not resume the child. Therefore, if we have a pending | |
6627 | fork follow, we must not send a global wildcard resume action | |
6628 | (vCont;c). We can still send process-wide wildcards though. */ | |
6629 | ||
6630 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
6631 | may_global_wildcard_vcont = 1; | |
6632 | ||
6633 | /* And assume every process is individually wildcard-able too. */ | |
5b6d1e4f | 6634 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6635 | { |
089354bb SM |
6636 | remote_inferior *priv = get_remote_inferior (inf); |
6637 | ||
6638 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6639 | } |
6640 | ||
6641 | /* Check for any pending events (not reported or processed yet) and | |
6642 | disable process and global wildcard resumes appropriately. */ | |
6643 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6644 | ||
5b6d1e4f | 6645 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6646 | { |
c9d22089 SM |
6647 | remote_thread_info *priv = get_remote_thread_info (tp); |
6648 | ||
85ad3aaf PA |
6649 | /* If a thread of a process is not meant to be resumed, then we |
6650 | can't wildcard that process. */ | |
c9d22089 | 6651 | if (priv->resume_state () == resume_state::NOT_RESUMED) |
85ad3aaf | 6652 | { |
089354bb | 6653 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6654 | |
6655 | /* And if we can't wildcard a process, we can't wildcard | |
6656 | everything either. */ | |
6657 | may_global_wildcard_vcont = 0; | |
6658 | continue; | |
6659 | } | |
6660 | ||
6661 | /* If a thread is the parent of an unfollowed fork, then we | |
6662 | can't do a global wildcard, as that would resume the fork | |
6663 | child. */ | |
6664 | if (is_pending_fork_parent_thread (tp)) | |
6665 | may_global_wildcard_vcont = 0; | |
6666 | } | |
6667 | ||
6668 | /* Now let's build the vCont packet(s). Actions must be appended | |
6669 | from narrower to wider scopes (thread -> process -> global). If | |
6670 | we end up with too many actions for a single packet vcont_builder | |
6671 | flushes the current vCont packet to the remote side and starts a | |
6672 | new one. */ | |
6b8edb51 | 6673 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
6674 | |
6675 | /* Threads first. */ | |
5b6d1e4f | 6676 | for (thread_info *tp : all_non_exited_threads (this)) |
85ad3aaf | 6677 | { |
7aabaf9d | 6678 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf | 6679 | |
c9d22089 SM |
6680 | /* If the thread was previously vCont-resumed, no need to send a specific |
6681 | action for it. If we didn't receive a resume request for it, don't | |
6682 | send an action for it either. */ | |
6683 | if (remote_thr->resume_state () != resume_state::RESUMED_PENDING_VCONT) | |
85ad3aaf PA |
6684 | continue; |
6685 | ||
6686 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6687 | ||
c9d22089 SM |
6688 | const resumed_pending_vcont_info &info |
6689 | = remote_thr->resumed_pending_vcont_info (); | |
85ad3aaf | 6690 | |
c9d22089 SM |
6691 | /* Check if we need to send a specific action for this thread. If not, |
6692 | it will be included in a wildcard resume instead. */ | |
6693 | if (info.step || info.sig != GDB_SIGNAL_0 | |
6694 | || !get_remote_inferior (tp->inf)->may_wildcard_vcont) | |
6695 | vcont_builder.push_action (tp->ptid, info.step, info.sig); | |
6696 | ||
6697 | remote_thr->set_resumed (); | |
85ad3aaf PA |
6698 | } |
6699 | ||
6700 | /* Now check whether we can send any process-wide wildcard. This is | |
6701 | to avoid sending a global wildcard in the case nothing is | |
6702 | supposed to be resumed. */ | |
6703 | any_process_wildcard = 0; | |
6704 | ||
5b6d1e4f | 6705 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6706 | { |
089354bb | 6707 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6708 | { |
6709 | any_process_wildcard = 1; | |
6710 | break; | |
6711 | } | |
6712 | } | |
6713 | ||
6714 | if (any_process_wildcard) | |
6715 | { | |
6716 | /* If all processes are wildcard-able, then send a single "c" | |
6717 | action, otherwise, send an "all (-1) threads of process" | |
6718 | continue action for each running process, if any. */ | |
6719 | if (may_global_wildcard_vcont) | |
6720 | { | |
f5db4863 PA |
6721 | vcont_builder.push_action (minus_one_ptid, |
6722 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6723 | } |
6724 | else | |
6725 | { | |
5b6d1e4f | 6726 | for (inferior *inf : all_non_exited_inferiors (this)) |
85ad3aaf | 6727 | { |
089354bb | 6728 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6729 | { |
f2907e49 | 6730 | vcont_builder.push_action (ptid_t (inf->pid), |
f5db4863 | 6731 | false, GDB_SIGNAL_0); |
85ad3aaf PA |
6732 | } |
6733 | } | |
6734 | } | |
6735 | } | |
6736 | ||
f5db4863 | 6737 | vcont_builder.flush (); |
85ad3aaf PA |
6738 | } |
6739 | ||
c906108c | 6740 | \f |
43ff13b4 | 6741 | |
74531fed PA |
6742 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6743 | thread, all threads of a remote process, or all threads of all | |
6744 | processes. */ | |
6745 | ||
6b8edb51 PA |
6746 | void |
6747 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
6748 | { |
6749 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6750 | char *p = rs->buf.data (); |
6751 | char *endp = p + get_remote_packet_size (); | |
74531fed | 6752 | |
5b6d1e4f PA |
6753 | /* FIXME: This supports_vCont_probed check is a workaround until |
6754 | packet_support is per-connection. */ | |
6755 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN | |
6756 | || !rs->supports_vCont_probed) | |
6b8edb51 | 6757 | remote_vcont_probe (); |
74531fed | 6758 | |
d458bd84 | 6759 | if (!rs->supports_vCont.t) |
74531fed PA |
6760 | error (_("Remote server does not support stopping threads")); |
6761 | ||
d7e15655 | 6762 | if (ptid == minus_one_ptid |
0e998d96 | 6763 | || (!remote_multi_process_p (rs) && ptid.is_pid ())) |
74531fed PA |
6764 | p += xsnprintf (p, endp - p, "vCont;t"); |
6765 | else | |
6766 | { | |
6767 | ptid_t nptid; | |
6768 | ||
74531fed PA |
6769 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6770 | ||
0e998d96 | 6771 | if (ptid.is_pid ()) |
74531fed | 6772 | /* All (-1) threads of process. */ |
e99b03dc | 6773 | nptid = ptid_t (ptid.pid (), -1, 0); |
74531fed PA |
6774 | else |
6775 | { | |
6776 | /* Small optimization: if we already have a stop reply for | |
6777 | this thread, no use in telling the stub we want this | |
6778 | stopped. */ | |
6779 | if (peek_stop_reply (ptid)) | |
6780 | return; | |
6781 | ||
6782 | nptid = ptid; | |
6783 | } | |
6784 | ||
a9cbf802 | 6785 | write_ptid (p, endp, nptid); |
74531fed PA |
6786 | } |
6787 | ||
6788 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6789 | come in asynchronously by notification. */ | |
6790 | putpkt (rs->buf); | |
8d64371b TT |
6791 | getpkt (&rs->buf, 0); |
6792 | if (strcmp (rs->buf.data (), "OK") != 0) | |
a068643d | 6793 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid).c_str (), |
8d64371b | 6794 | rs->buf.data ()); |
74531fed PA |
6795 | } |
6796 | ||
bfedc46a PA |
6797 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6798 | interrupt the remote target. It is undefined which thread of which | |
6799 | process reports the interrupt. */ | |
74531fed | 6800 | |
6b8edb51 PA |
6801 | void |
6802 | remote_target::remote_interrupt_as () | |
74531fed PA |
6803 | { |
6804 | struct remote_state *rs = get_remote_state (); | |
6805 | ||
3a29589a DJ |
6806 | rs->ctrlc_pending_p = 1; |
6807 | ||
74531fed PA |
6808 | /* If the inferior is stopped already, but the core didn't know |
6809 | about it yet, just ignore the request. The cached wait status | |
6810 | will be collected in remote_wait. */ | |
6811 | if (rs->cached_wait_status) | |
6812 | return; | |
6813 | ||
9a7071a8 JB |
6814 | /* Send interrupt_sequence to remote target. */ |
6815 | send_interrupt_sequence (); | |
74531fed PA |
6816 | } |
6817 | ||
de979965 PA |
6818 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6819 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6820 | reports the interrupt. Throws an error if the packet is not |
6821 | supported by the server. */ | |
de979965 | 6822 | |
6b8edb51 PA |
6823 | void |
6824 | remote_target::remote_interrupt_ns () | |
de979965 PA |
6825 | { |
6826 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6827 | char *p = rs->buf.data (); |
6828 | char *endp = p + get_remote_packet_size (); | |
de979965 PA |
6829 | |
6830 | xsnprintf (p, endp - p, "vCtrlC"); | |
6831 | ||
6832 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6833 | come in asynchronously by notification. */ | |
6834 | putpkt (rs->buf); | |
8d64371b | 6835 | getpkt (&rs->buf, 0); |
de979965 PA |
6836 | |
6837 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6838 | { | |
6839 | case PACKET_OK: | |
6840 | break; | |
6841 | case PACKET_UNKNOWN: | |
e42de8c7 | 6842 | error (_("No support for interrupting the remote target.")); |
de979965 | 6843 | case PACKET_ERROR: |
8d64371b | 6844 | error (_("Interrupting target failed: %s"), rs->buf.data ()); |
de979965 | 6845 | } |
de979965 PA |
6846 | } |
6847 | ||
bfedc46a | 6848 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6849 | |
f6ac5f3d PA |
6850 | void |
6851 | remote_target::stop (ptid_t ptid) | |
c906108c | 6852 | { |
7a292a7a | 6853 | if (remote_debug) |
0f71a2f6 | 6854 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6855 | |
6efcd9a8 | 6856 | if (target_is_non_stop_p ()) |
74531fed | 6857 | remote_stop_ns (ptid); |
c906108c | 6858 | else |
bfedc46a PA |
6859 | { |
6860 | /* We don't currently have a way to transparently pause the | |
6861 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6862 | remote_interrupt_as (); |
bfedc46a PA |
6863 | } |
6864 | } | |
6865 | ||
6866 | /* Implement the to_interrupt function for the remote targets. */ | |
6867 | ||
f6ac5f3d PA |
6868 | void |
6869 | remote_target::interrupt () | |
bfedc46a PA |
6870 | { |
6871 | if (remote_debug) | |
6872 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6873 | ||
e42de8c7 PA |
6874 | if (target_is_non_stop_p ()) |
6875 | remote_interrupt_ns (); | |
bfedc46a | 6876 | else |
e42de8c7 | 6877 | remote_interrupt_as (); |
c906108c SS |
6878 | } |
6879 | ||
93692b58 PA |
6880 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6881 | ||
f6ac5f3d PA |
6882 | void |
6883 | remote_target::pass_ctrlc () | |
93692b58 PA |
6884 | { |
6885 | struct remote_state *rs = get_remote_state (); | |
6886 | ||
6887 | if (remote_debug) | |
6888 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6889 | ||
6890 | /* If we're starting up, we're not fully synced yet. Quit | |
6891 | immediately. */ | |
6892 | if (rs->starting_up) | |
6893 | quit (); | |
6894 | /* If ^C has already been sent once, offer to disconnect. */ | |
6895 | else if (rs->ctrlc_pending_p) | |
6896 | interrupt_query (); | |
6897 | else | |
e671cd59 | 6898 | target_interrupt (); |
93692b58 PA |
6899 | } |
6900 | ||
c906108c SS |
6901 | /* Ask the user what to do when an interrupt is received. */ |
6902 | ||
6b8edb51 PA |
6903 | void |
6904 | remote_target::interrupt_query () | |
c906108c | 6905 | { |
abc56d60 | 6906 | struct remote_state *rs = get_remote_state (); |
c906108c | 6907 | |
abc56d60 | 6908 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6909 | { |
abc56d60 PA |
6910 | if (query (_("The target is not responding to interrupt requests.\n" |
6911 | "Stop debugging it? "))) | |
74531fed | 6912 | { |
5b6d1e4f | 6913 | remote_unpush_target (this); |
abc56d60 | 6914 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6915 | } |
6916 | } | |
abc56d60 PA |
6917 | else |
6918 | { | |
6919 | if (query (_("Interrupted while waiting for the program.\n" | |
6920 | "Give up waiting? "))) | |
6921 | quit (); | |
6922 | } | |
c906108c SS |
6923 | } |
6924 | ||
6426a772 JM |
6925 | /* Enable/disable target terminal ownership. Most targets can use |
6926 | terminal groups to control terminal ownership. Remote targets are | |
6927 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6928 | is required. */ |
6426a772 | 6929 | |
f6ac5f3d PA |
6930 | void |
6931 | remote_target::terminal_inferior () | |
6426a772 | 6932 | { |
6426a772 JM |
6933 | /* NOTE: At this point we could also register our selves as the |
6934 | recipient of all input. Any characters typed could then be | |
23860348 | 6935 | passed on down to the target. */ |
6426a772 JM |
6936 | } |
6937 | ||
f6ac5f3d PA |
6938 | void |
6939 | remote_target::terminal_ours () | |
6426a772 | 6940 | { |
6426a772 JM |
6941 | } |
6942 | ||
176a6961 | 6943 | static void |
05be00a8 | 6944 | remote_console_output (const char *msg) |
c906108c | 6945 | { |
05be00a8 | 6946 | const char *p; |
c906108c | 6947 | |
c5aa993b | 6948 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6949 | { |
6950 | char tb[2]; | |
6951 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6952 | |
c906108c SS |
6953 | tb[0] = c; |
6954 | tb[1] = 0; | |
da5bd37e | 6955 | gdb_stdtarg->puts (tb); |
c906108c | 6956 | } |
da5bd37e | 6957 | gdb_stdtarg->flush (); |
00db5b94 | 6958 | } |
74531fed | 6959 | |
32603266 | 6960 | struct stop_reply : public notif_event |
74531fed | 6961 | { |
32603266 | 6962 | ~stop_reply (); |
74531fed | 6963 | |
722247f1 | 6964 | /* The identifier of the thread about this event */ |
74531fed PA |
6965 | ptid_t ptid; |
6966 | ||
340e3c99 | 6967 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6968 | connection, represented by a remote_state object, is closed, |
6969 | all the associated stop_reply events should be released. */ | |
6970 | struct remote_state *rs; | |
6971 | ||
74531fed PA |
6972 | struct target_waitstatus ws; |
6973 | ||
5cd63fda PA |
6974 | /* The architecture associated with the expedited registers. */ |
6975 | gdbarch *arch; | |
6976 | ||
15148d6a PA |
6977 | /* Expedited registers. This makes remote debugging a bit more |
6978 | efficient for those targets that provide critical registers as | |
6979 | part of their normal status mechanism (as another roundtrip to | |
6980 | fetch them is avoided). */ | |
32603266 | 6981 | std::vector<cached_reg_t> regcache; |
74531fed | 6982 | |
f7e6eed5 PA |
6983 | enum target_stop_reason stop_reason; |
6984 | ||
74531fed PA |
6985 | CORE_ADDR watch_data_address; |
6986 | ||
dc146f7c | 6987 | int core; |
32603266 | 6988 | }; |
c906108c | 6989 | |
221e1a37 PA |
6990 | /* Return the length of the stop reply queue. */ |
6991 | ||
6b8edb51 PA |
6992 | int |
6993 | remote_target::stop_reply_queue_length () | |
221e1a37 | 6994 | { |
6b8edb51 | 6995 | remote_state *rs = get_remote_state (); |
953edf2b | 6996 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
6997 | } |
6998 | ||
cb8c24b6 | 6999 | static void |
6b8edb51 | 7000 | remote_notif_stop_parse (remote_target *remote, |
bb277751 | 7001 | struct notif_client *self, const char *buf, |
722247f1 YQ |
7002 | struct notif_event *event) |
7003 | { | |
6b8edb51 | 7004 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
7005 | } |
7006 | ||
7007 | static void | |
6b8edb51 | 7008 | remote_notif_stop_ack (remote_target *remote, |
bb277751 | 7009 | struct notif_client *self, const char *buf, |
722247f1 YQ |
7010 | struct notif_event *event) |
7011 | { | |
7012 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
7013 | ||
7014 | /* acknowledge */ | |
6b8edb51 | 7015 | putpkt (remote, self->ack_command); |
722247f1 YQ |
7016 | |
7017 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6b8edb51 | 7018 | { |
722247f1 YQ |
7019 | /* We got an unknown stop reply. */ |
7020 | error (_("Unknown stop reply")); | |
6b8edb51 | 7021 | } |
722247f1 | 7022 | |
6b8edb51 | 7023 | remote->push_stop_reply (stop_reply); |
722247f1 YQ |
7024 | } |
7025 | ||
7026 | static int | |
6b8edb51 PA |
7027 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
7028 | struct notif_client *self) | |
722247f1 YQ |
7029 | { |
7030 | /* We can't get pending events in remote_notif_process for | |
7031 | notification stop, and we have to do this in remote_wait_ns | |
7032 | instead. If we fetch all queued events from stub, remote stub | |
7033 | may exit and we have no chance to process them back in | |
7034 | remote_wait_ns. */ | |
6b8edb51 PA |
7035 | remote_state *rs = remote->get_remote_state (); |
7036 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
722247f1 YQ |
7037 | return 0; |
7038 | } | |
7039 | ||
32603266 | 7040 | stop_reply::~stop_reply () |
722247f1 | 7041 | { |
32603266 TT |
7042 | for (cached_reg_t ® : regcache) |
7043 | xfree (reg.data); | |
722247f1 YQ |
7044 | } |
7045 | ||
32603266 TT |
7046 | static notif_event_up |
7047 | remote_notif_stop_alloc_reply () | |
722247f1 | 7048 | { |
32603266 | 7049 | return notif_event_up (new struct stop_reply ()); |
722247f1 YQ |
7050 | } |
7051 | ||
7052 | /* A client of notification Stop. */ | |
7053 | ||
7054 | struct notif_client notif_client_stop = | |
7055 | { | |
7056 | "Stop", | |
7057 | "vStopped", | |
7058 | remote_notif_stop_parse, | |
7059 | remote_notif_stop_ack, | |
7060 | remote_notif_stop_can_get_pending_events, | |
7061 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 7062 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
7063 | }; |
7064 | ||
85ad3aaf | 7065 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
7066 | the pid of the process that owns the threads we want to check, or |
7067 | -1 if we want to check all threads. */ | |
7068 | ||
7069 | static int | |
7070 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
7071 | ptid_t thread_ptid) | |
7072 | { | |
7073 | if (ws->kind == TARGET_WAITKIND_FORKED | |
7074 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
7075 | { | |
e99b03dc | 7076 | if (event_pid == -1 || event_pid == thread_ptid.pid ()) |
cbb8991c DB |
7077 | return 1; |
7078 | } | |
7079 | ||
7080 | return 0; | |
7081 | } | |
7082 | ||
85ad3aaf PA |
7083 | /* Return the thread's pending status used to determine whether the |
7084 | thread is a fork parent stopped at a fork event. */ | |
7085 | ||
7086 | static struct target_waitstatus * | |
7087 | thread_pending_fork_status (struct thread_info *thread) | |
7088 | { | |
7089 | if (thread->suspend.waitstatus_pending_p) | |
7090 | return &thread->suspend.waitstatus; | |
7091 | else | |
7092 | return &thread->pending_follow; | |
7093 | } | |
7094 | ||
7095 | /* Determine if THREAD is a pending fork parent thread. */ | |
7096 | ||
7097 | static int | |
7098 | is_pending_fork_parent_thread (struct thread_info *thread) | |
7099 | { | |
7100 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
7101 | int pid = -1; | |
7102 | ||
7103 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
7104 | } | |
7105 | ||
cbb8991c DB |
7106 | /* If CONTEXT contains any fork child threads that have not been |
7107 | reported yet, remove them from the CONTEXT list. If such a | |
7108 | thread exists it is because we are stopped at a fork catchpoint | |
7109 | and have not yet called follow_fork, which will set up the | |
7110 | host-side data structures for the new process. */ | |
7111 | ||
6b8edb51 PA |
7112 | void |
7113 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c | 7114 | { |
cbb8991c DB |
7115 | int pid = -1; |
7116 | struct notif_client *notif = ¬if_client_stop; | |
cbb8991c DB |
7117 | |
7118 | /* For any threads stopped at a fork event, remove the corresponding | |
7119 | fork child threads from the CONTEXT list. */ | |
5b6d1e4f | 7120 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c | 7121 | { |
85ad3aaf | 7122 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
7123 | |
7124 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 7125 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
7126 | } |
7127 | ||
7128 | /* Check for any pending fork events (not reported or processed yet) | |
7129 | in process PID and remove those fork child threads from the | |
7130 | CONTEXT list as well. */ | |
7131 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7132 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7133 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
7134 | || event->ws.kind == TARGET_WAITKIND_VFORKED | |
7135 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
7136 | context->remove_thread (event->ws.value.related_pid); | |
85ad3aaf PA |
7137 | } |
7138 | ||
7139 | /* Check whether any event pending in the vStopped queue would prevent | |
7140 | a global or process wildcard vCont action. Clear | |
7141 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
7142 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
7143 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
7144 | ||
6b8edb51 PA |
7145 | void |
7146 | remote_target::check_pending_events_prevent_wildcard_vcont | |
7147 | (int *may_global_wildcard) | |
85ad3aaf PA |
7148 | { |
7149 | struct notif_client *notif = ¬if_client_stop; | |
7150 | ||
7151 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
7152 | for (auto &event : get_remote_state ()->stop_reply_queue) |
7153 | { | |
7154 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
7155 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
7156 | continue; | |
85ad3aaf | 7157 | |
953edf2b TT |
7158 | if (event->ws.kind == TARGET_WAITKIND_FORKED |
7159 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
7160 | *may_global_wildcard = 0; | |
722247f1 | 7161 | |
5b6d1e4f | 7162 | struct inferior *inf = find_inferior_ptid (this, event->ptid); |
722247f1 | 7163 | |
953edf2b TT |
7164 | /* This may be the first time we heard about this process. |
7165 | Regardless, we must not do a global wildcard resume, otherwise | |
7166 | we'd resume this process too. */ | |
7167 | *may_global_wildcard = 0; | |
7168 | if (inf != NULL) | |
7169 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
722247f1 | 7170 | } |
722247f1 YQ |
7171 | } |
7172 | ||
f48ff2a7 | 7173 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7174 | |
6b8edb51 PA |
7175 | void |
7176 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7177 | { |
f48ff2a7 YQ |
7178 | struct stop_reply *reply; |
7179 | struct remote_state *rs = get_remote_state (); | |
7180 | struct remote_notif_state *rns = rs->notif_state; | |
7181 | ||
7182 | /* This function can be notified when an inferior exists. When the | |
7183 | target is not remote, the notification state is NULL. */ | |
7184 | if (rs->remote_desc == NULL) | |
7185 | return; | |
7186 | ||
7187 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7188 | |
74531fed | 7189 | /* Discard the in-flight notification. */ |
e99b03dc | 7190 | if (reply != NULL && reply->ptid.pid () == inf->pid) |
74531fed | 7191 | { |
32603266 | 7192 | delete reply; |
f48ff2a7 | 7193 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 7194 | } |
c906108c | 7195 | |
74531fed PA |
7196 | /* Discard the stop replies we have already pulled with |
7197 | vStopped. */ | |
953edf2b TT |
7198 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7199 | rs->stop_reply_queue.end (), | |
7200 | [=] (const stop_reply_up &event) | |
7201 | { | |
7202 | return event->ptid.pid () == inf->pid; | |
7203 | }); | |
7204 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
bcc75809 YQ |
7205 | } |
7206 | ||
7207 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7208 | |
6b8edb51 PA |
7209 | void |
7210 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7211 | { |
6b8edb51 | 7212 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7213 | |
f48ff2a7 YQ |
7214 | /* Discard the stop replies we have already pulled with |
7215 | vStopped. */ | |
953edf2b TT |
7216 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7217 | rs->stop_reply_queue.end (), | |
7218 | [=] (const stop_reply_up &event) | |
7219 | { | |
7220 | return event->rs == rs; | |
7221 | }); | |
7222 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7223 | } |
43ff13b4 | 7224 | |
722247f1 YQ |
7225 | /* Remove the first reply in 'stop_reply_queue' which matches |
7226 | PTID. */ | |
2e9f7625 | 7227 | |
6b8edb51 PA |
7228 | struct stop_reply * |
7229 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7230 | { |
953edf2b | 7231 | remote_state *rs = get_remote_state (); |
722247f1 | 7232 | |
953edf2b TT |
7233 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7234 | rs->stop_reply_queue.end (), | |
7235 | [=] (const stop_reply_up &event) | |
7236 | { | |
7237 | return event->ptid.matches (ptid); | |
7238 | }); | |
7239 | struct stop_reply *result; | |
7240 | if (iter == rs->stop_reply_queue.end ()) | |
7241 | result = nullptr; | |
7242 | else | |
7243 | { | |
7244 | result = iter->release (); | |
7245 | rs->stop_reply_queue.erase (iter); | |
7246 | } | |
722247f1 | 7247 | |
722247f1 YQ |
7248 | if (notif_debug) |
7249 | fprintf_unfiltered (gdb_stdlog, | |
7250 | "notif: discard queued event: 'Stop' in %s\n", | |
a068643d | 7251 | target_pid_to_str (ptid).c_str ()); |
a744cf53 | 7252 | |
953edf2b | 7253 | return result; |
74531fed | 7254 | } |
75c99385 | 7255 | |
74531fed PA |
7256 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7257 | remove it from the queue, and return it. Returns NULL if none is | |
7258 | found. If there are still queued events left to process, tell the | |
7259 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7260 | |
6b8edb51 PA |
7261 | struct stop_reply * |
7262 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7263 | { |
953edf2b | 7264 | remote_state *rs = get_remote_state (); |
722247f1 | 7265 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7266 | |
953edf2b | 7267 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7268 | { |
6b8edb51 PA |
7269 | /* There's still at least an event left. */ |
7270 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
7271 | } | |
74531fed | 7272 | |
722247f1 | 7273 | return r; |
74531fed PA |
7274 | } |
7275 | ||
7276 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7277 | know that we now have at least one queued event left to pass to the | |
7278 | core side, tell the event loop to get back to target_wait soon. */ | |
7279 | ||
6b8edb51 PA |
7280 | void |
7281 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7282 | { |
6b8edb51 | 7283 | remote_state *rs = get_remote_state (); |
953edf2b | 7284 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7285 | |
722247f1 YQ |
7286 | if (notif_debug) |
7287 | fprintf_unfiltered (gdb_stdlog, | |
7288 | "notif: push 'Stop' %s to queue %d\n", | |
a068643d | 7289 | target_pid_to_str (new_event->ptid).c_str (), |
953edf2b | 7290 | int (rs->stop_reply_queue.size ())); |
74531fed | 7291 | |
6b8edb51 | 7292 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
74531fed PA |
7293 | } |
7294 | ||
7295 | /* Returns true if we have a stop reply for PTID. */ | |
7296 | ||
6b8edb51 PA |
7297 | int |
7298 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7299 | { |
6b8edb51 | 7300 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7301 | for (auto &event : rs->stop_reply_queue) |
7302 | if (ptid == event->ptid | |
7303 | && event->ws.kind == TARGET_WAITKIND_STOPPED) | |
7304 | return 1; | |
7305 | return 0; | |
74531fed PA |
7306 | } |
7307 | ||
26d56a93 SL |
7308 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7309 | starting with P and ending with PEND matches PREFIX. */ | |
7310 | ||
7311 | static int | |
7312 | strprefix (const char *p, const char *pend, const char *prefix) | |
7313 | { | |
7314 | for ( ; p < pend; p++, prefix++) | |
7315 | if (*p != *prefix) | |
7316 | return 0; | |
7317 | return *prefix == '\0'; | |
7318 | } | |
7319 | ||
74531fed PA |
7320 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7321 | result is stored in EVENT, or throws an error. */ | |
7322 | ||
6b8edb51 | 7323 | void |
bb277751 | 7324 | remote_target::remote_parse_stop_reply (const char *buf, stop_reply *event) |
74531fed | 7325 | { |
5cd63fda | 7326 | remote_arch_state *rsa = NULL; |
74531fed | 7327 | ULONGEST addr; |
256642e8 | 7328 | const char *p; |
94585166 | 7329 | int skipregs = 0; |
74531fed PA |
7330 | |
7331 | event->ptid = null_ptid; | |
bcc75809 | 7332 | event->rs = get_remote_state (); |
74531fed PA |
7333 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
7334 | event->ws.value.integer = 0; | |
f7e6eed5 | 7335 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
32603266 | 7336 | event->regcache.clear (); |
dc146f7c | 7337 | event->core = -1; |
74531fed PA |
7338 | |
7339 | switch (buf[0]) | |
7340 | { | |
7341 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7342 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7343 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7344 | ss = signal number | |
7345 | n... = register number | |
7346 | r... = register contents | |
7347 | */ | |
7348 | ||
7349 | p = &buf[3]; /* after Txx */ | |
7350 | while (*p) | |
7351 | { | |
256642e8 | 7352 | const char *p1; |
cea39f65 | 7353 | int fieldsize; |
43ff13b4 | 7354 | |
1f10ba14 PA |
7355 | p1 = strchr (p, ':'); |
7356 | if (p1 == NULL) | |
7357 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7358 | Packet: '%s'\n"), | |
7359 | p, buf); | |
7360 | if (p == p1) | |
7361 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7362 | Packet: '%s'\n"), | |
7363 | p, buf); | |
3c3bea1c | 7364 | |
1f10ba14 PA |
7365 | /* Some "registers" are actually extended stop information. |
7366 | Note if you're adding a new entry here: GDB 7.9 and | |
7367 | earlier assume that all register "numbers" that start | |
7368 | with an hex digit are real register numbers. Make sure | |
7369 | the server only sends such a packet if it knows the | |
7370 | client understands it. */ | |
c8e38a49 | 7371 | |
26d56a93 | 7372 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7373 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7374 | else if (strprefix (p, p1, "syscall_entry")) |
7375 | { | |
7376 | ULONGEST sysno; | |
7377 | ||
7378 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
7379 | p = unpack_varlen_hex (++p1, &sysno); | |
7380 | event->ws.value.syscall_number = (int) sysno; | |
7381 | } | |
7382 | else if (strprefix (p, p1, "syscall_return")) | |
7383 | { | |
7384 | ULONGEST sysno; | |
7385 | ||
7386 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
7387 | p = unpack_varlen_hex (++p1, &sysno); | |
7388 | event->ws.value.syscall_number = (int) sysno; | |
7389 | } | |
26d56a93 SL |
7390 | else if (strprefix (p, p1, "watch") |
7391 | || strprefix (p, p1, "rwatch") | |
7392 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7393 | { |
f7e6eed5 | 7394 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7395 | p = unpack_varlen_hex (++p1, &addr); |
7396 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7397 | } |
26d56a93 | 7398 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7399 | { |
7400 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7401 | ||
7402 | /* Make sure the stub doesn't forget to indicate support | |
7403 | with qSupported. */ | |
7404 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7405 | error (_("Unexpected swbreak stop reason")); | |
7406 | ||
7407 | /* The value part is documented as "must be empty", | |
7408 | though we ignore it, in case we ever decide to make | |
7409 | use of it in a backward compatible way. */ | |
8424cc97 | 7410 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7411 | } |
26d56a93 | 7412 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7413 | { |
7414 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7415 | ||
7416 | /* Make sure the stub doesn't forget to indicate support | |
7417 | with qSupported. */ | |
7418 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7419 | error (_("Unexpected hwbreak stop reason")); | |
7420 | ||
7421 | /* See above. */ | |
8424cc97 | 7422 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7423 | } |
26d56a93 | 7424 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7425 | { |
1f10ba14 | 7426 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 7427 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7428 | } |
26d56a93 | 7429 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
7430 | { |
7431 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
7432 | /* p1 will indicate "begin" or "end", but it makes | |
7433 | no difference for now, so ignore it. */ | |
8424cc97 | 7434 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7435 | } |
26d56a93 | 7436 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7437 | { |
7438 | ULONGEST c; | |
a744cf53 | 7439 | |
1f10ba14 PA |
7440 | p = unpack_varlen_hex (++p1, &c); |
7441 | event->core = c; | |
cea39f65 | 7442 | } |
26d56a93 | 7443 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
7444 | { |
7445 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7446 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
7447 | } | |
26d56a93 | 7448 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
7449 | { |
7450 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7451 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
7452 | } | |
26d56a93 | 7453 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
7454 | { |
7455 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 7456 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7457 | } |
6ab24463 | 7458 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7459 | { |
7460 | ULONGEST ignored; | |
94585166 DB |
7461 | int pathlen; |
7462 | ||
7463 | /* Determine the length of the execd pathname. */ | |
7464 | p = unpack_varlen_hex (++p1, &ignored); | |
7465 | pathlen = (p - p1) / 2; | |
7466 | ||
7467 | /* Save the pathname for event reporting and for | |
7468 | the next run command. */ | |
c6321f19 TT |
7469 | gdb::unique_xmalloc_ptr<char[]> pathname |
7470 | ((char *) xmalloc (pathlen + 1)); | |
7471 | hex2bin (p1, (gdb_byte *) pathname.get (), pathlen); | |
94585166 DB |
7472 | pathname[pathlen] = '\0'; |
7473 | ||
7474 | /* This is freed during event handling. */ | |
c6321f19 | 7475 | event->ws.value.execd_pathname = pathname.release (); |
94585166 DB |
7476 | event->ws.kind = TARGET_WAITKIND_EXECD; |
7477 | ||
7478 | /* Skip the registers included in this packet, since | |
7479 | they may be for an architecture different from the | |
7480 | one used by the original program. */ | |
7481 | skipregs = 1; | |
7482 | } | |
65706a29 PA |
7483 | else if (strprefix (p, p1, "create")) |
7484 | { | |
7485 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 7486 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7487 | } |
cea39f65 MS |
7488 | else |
7489 | { | |
1f10ba14 | 7490 | ULONGEST pnum; |
256642e8 | 7491 | const char *p_temp; |
1f10ba14 | 7492 | |
94585166 DB |
7493 | if (skipregs) |
7494 | { | |
8424cc97 | 7495 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7496 | p++; |
7497 | continue; | |
7498 | } | |
7499 | ||
1f10ba14 PA |
7500 | /* Maybe a real ``P'' register number. */ |
7501 | p_temp = unpack_varlen_hex (p, &pnum); | |
7502 | /* If the first invalid character is the colon, we got a | |
7503 | register number. Otherwise, it's an unknown stop | |
7504 | reason. */ | |
7505 | if (p_temp == p1) | |
7506 | { | |
5cd63fda PA |
7507 | /* If we haven't parsed the event's thread yet, find |
7508 | it now, in order to find the architecture of the | |
7509 | reported expedited registers. */ | |
7510 | if (event->ptid == null_ptid) | |
7511 | { | |
24ed6739 AB |
7512 | /* If there is no thread-id information then leave |
7513 | the event->ptid as null_ptid. Later in | |
7514 | process_stop_reply we will pick a suitable | |
7515 | thread. */ | |
5cd63fda PA |
7516 | const char *thr = strstr (p1 + 1, ";thread:"); |
7517 | if (thr != NULL) | |
7518 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7519 | NULL); | |
5cd63fda PA |
7520 | } |
7521 | ||
7522 | if (rsa == NULL) | |
7523 | { | |
5b6d1e4f PA |
7524 | inferior *inf |
7525 | = (event->ptid == null_ptid | |
7526 | ? NULL | |
7527 | : find_inferior_ptid (this, event->ptid)); | |
5cd63fda PA |
7528 | /* If this is the first time we learn anything |
7529 | about this process, skip the registers | |
7530 | included in this packet, since we don't yet | |
7531 | know which architecture to use to parse them. | |
7532 | We'll determine the architecture later when | |
7533 | we process the stop reply and retrieve the | |
7534 | target description, via | |
7535 | remote_notice_new_inferior -> | |
7536 | post_create_inferior. */ | |
7537 | if (inf == NULL) | |
7538 | { | |
7539 | p = strchrnul (p1 + 1, ';'); | |
7540 | p++; | |
7541 | continue; | |
7542 | } | |
7543 | ||
7544 | event->arch = inf->gdbarch; | |
9d6eea31 | 7545 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7546 | } |
7547 | ||
7548 | packet_reg *reg | |
7549 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7550 | cached_reg_t cached_reg; |
43ff13b4 | 7551 | |
1f10ba14 PA |
7552 | if (reg == NULL) |
7553 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7554 | Packet: '%s'\n"), |
1f10ba14 | 7555 | hex_string (pnum), p, buf); |
c8e38a49 | 7556 | |
1f10ba14 | 7557 | cached_reg.num = reg->regnum; |
d1dff226 | 7558 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7559 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7560 | |
1f10ba14 PA |
7561 | p = p1 + 1; |
7562 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7563 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7564 | p += 2 * fieldsize; |
5cd63fda | 7565 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7566 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7567 | |
32603266 | 7568 | event->regcache.push_back (cached_reg); |
1f10ba14 PA |
7569 | } |
7570 | else | |
7571 | { | |
7572 | /* Not a number. Silently skip unknown optional | |
7573 | info. */ | |
8424cc97 | 7574 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7575 | } |
cea39f65 | 7576 | } |
c8e38a49 | 7577 | |
cea39f65 MS |
7578 | if (*p != ';') |
7579 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7580 | buf, p); | |
7581 | ++p; | |
7582 | } | |
5b5596ff PA |
7583 | |
7584 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7585 | break; | |
7586 | ||
c8e38a49 PA |
7587 | /* fall through */ |
7588 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7589 | { |
7590 | int sig; | |
7591 | ||
7592 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7593 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7594 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7595 | event->ws.value.sig = (enum gdb_signal) sig; | |
7596 | else | |
7597 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7598 | } | |
c8e38a49 | 7599 | break; |
65706a29 PA |
7600 | case 'w': /* Thread exited. */ |
7601 | { | |
65706a29 PA |
7602 | ULONGEST value; |
7603 | ||
7604 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7605 | p = unpack_varlen_hex (&buf[1], &value); | |
7606 | event->ws.value.integer = value; | |
7607 | if (*p != ';') | |
7608 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7609 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7610 | break; |
7611 | } | |
c8e38a49 PA |
7612 | case 'W': /* Target exited. */ |
7613 | case 'X': | |
7614 | { | |
c8e38a49 | 7615 | ULONGEST value; |
82f73884 | 7616 | |
c8e38a49 PA |
7617 | /* GDB used to accept only 2 hex chars here. Stubs should |
7618 | only send more if they detect GDB supports multi-process | |
7619 | support. */ | |
7620 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7621 | |
c8e38a49 PA |
7622 | if (buf[0] == 'W') |
7623 | { | |
7624 | /* The remote process exited. */ | |
74531fed PA |
7625 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7626 | event->ws.value.integer = value; | |
c8e38a49 PA |
7627 | } |
7628 | else | |
7629 | { | |
7630 | /* The remote process exited with a signal. */ | |
74531fed | 7631 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7632 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7633 | event->ws.value.sig = (enum gdb_signal) value; | |
7634 | else | |
7635 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7636 | } |
82f73884 | 7637 | |
e7af6c70 TBA |
7638 | /* If no process is specified, return null_ptid, and let the |
7639 | caller figure out the right process to use. */ | |
7640 | int pid = 0; | |
c8e38a49 PA |
7641 | if (*p == '\0') |
7642 | ; | |
7643 | else if (*p == ';') | |
7644 | { | |
7645 | p++; | |
7646 | ||
0b24eb2d | 7647 | if (*p == '\0') |
82f73884 | 7648 | ; |
61012eef | 7649 | else if (startswith (p, "process:")) |
82f73884 | 7650 | { |
c8e38a49 | 7651 | ULONGEST upid; |
a744cf53 | 7652 | |
c8e38a49 PA |
7653 | p += sizeof ("process:") - 1; |
7654 | unpack_varlen_hex (p, &upid); | |
7655 | pid = upid; | |
82f73884 PA |
7656 | } |
7657 | else | |
7658 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7659 | } |
c8e38a49 PA |
7660 | else |
7661 | error (_("unknown stop reply packet: %s"), buf); | |
f2907e49 | 7662 | event->ptid = ptid_t (pid); |
74531fed PA |
7663 | } |
7664 | break; | |
f2faf941 PA |
7665 | case 'N': |
7666 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7667 | event->ptid = minus_one_ptid; | |
7668 | break; | |
74531fed | 7669 | } |
74531fed PA |
7670 | } |
7671 | ||
722247f1 YQ |
7672 | /* When the stub wants to tell GDB about a new notification reply, it |
7673 | sends a notification (%Stop, for example). Those can come it at | |
7674 | any time, hence, we have to make sure that any pending | |
7675 | putpkt/getpkt sequence we're making is finished, before querying | |
7676 | the stub for more events with the corresponding ack command | |
7677 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7678 | immediately upon receiving the notification, something like this | |
7679 | could happen: | |
74531fed PA |
7680 | |
7681 | 1.1) --> Hg 1 | |
7682 | 1.2) <-- OK | |
7683 | 1.3) --> g | |
7684 | 1.4) <-- %Stop | |
7685 | 1.5) --> vStopped | |
7686 | 1.6) <-- (registers reply to step #1.3) | |
7687 | ||
7688 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7689 | query. | |
7690 | ||
796cb314 | 7691 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7692 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7693 | doing whatever we were doing: | |
7694 | ||
7695 | 2.1) --> Hg 1 | |
7696 | 2.2) <-- OK | |
7697 | 2.3) --> g | |
7698 | 2.4) <-- %Stop | |
7699 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7700 | 2.5) <-- (registers reply to step #2.3) | |
7701 | ||
85102364 | 7702 | Eventually after step #2.5, we return to the event loop, which |
74531fed PA |
7703 | notices there's an event on the |
7704 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7705 | associated callback --- the function below. At this point, we're | |
7706 | always safe to start a vStopped sequence. : | |
7707 | ||
7708 | 2.6) --> vStopped | |
7709 | 2.7) <-- T05 thread:2 | |
7710 | 2.8) --> vStopped | |
7711 | 2.9) --> OK | |
7712 | */ | |
7713 | ||
722247f1 | 7714 | void |
6b8edb51 | 7715 | remote_target::remote_notif_get_pending_events (notif_client *nc) |
74531fed PA |
7716 | { |
7717 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7718 | |
f48ff2a7 | 7719 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7720 | { |
722247f1 YQ |
7721 | if (notif_debug) |
7722 | fprintf_unfiltered (gdb_stdlog, | |
7723 | "notif: process: '%s' ack pending event\n", | |
7724 | nc->name); | |
74531fed | 7725 | |
722247f1 | 7726 | /* acknowledge */ |
8d64371b TT |
7727 | nc->ack (this, nc, rs->buf.data (), |
7728 | rs->notif_state->pending_event[nc->id]); | |
f48ff2a7 | 7729 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
7730 | |
7731 | while (1) | |
7732 | { | |
8d64371b TT |
7733 | getpkt (&rs->buf, 0); |
7734 | if (strcmp (rs->buf.data (), "OK") == 0) | |
74531fed PA |
7735 | break; |
7736 | else | |
8d64371b | 7737 | remote_notif_ack (this, nc, rs->buf.data ()); |
74531fed PA |
7738 | } |
7739 | } | |
722247f1 YQ |
7740 | else |
7741 | { | |
7742 | if (notif_debug) | |
7743 | fprintf_unfiltered (gdb_stdlog, | |
7744 | "notif: process: '%s' no pending reply\n", | |
7745 | nc->name); | |
7746 | } | |
74531fed PA |
7747 | } |
7748 | ||
6b8edb51 PA |
7749 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
7750 | avoid having to export the whole remote_target class. */ | |
7751 | ||
7752 | void | |
7753 | remote_notif_get_pending_events (remote_target *remote, notif_client *nc) | |
7754 | { | |
7755 | remote->remote_notif_get_pending_events (nc); | |
7756 | } | |
7757 | ||
8f66807b AB |
7758 | /* Called from process_stop_reply when the stop packet we are responding |
7759 | to didn't include a process-id or thread-id. STATUS is the stop event | |
7760 | we are responding to. | |
7761 | ||
7762 | It is the task of this function to select a suitable thread (or process) | |
7763 | and return its ptid, this is the thread (or process) we will assume the | |
7764 | stop event came from. | |
7765 | ||
7766 | In some cases there isn't really any choice about which thread (or | |
7767 | process) is selected, a basic remote with a single process containing a | |
7768 | single thread might choose not to send any process-id or thread-id in | |
7769 | its stop packets, this function will select and return the one and only | |
7770 | thread. | |
7771 | ||
7772 | However, if a target supports multiple threads (or processes) and still | |
7773 | doesn't include a thread-id (or process-id) in its stop packet then | |
7774 | first, this is a badly behaving target, and second, we're going to have | |
7775 | to select a thread (or process) at random and use that. This function | |
7776 | will print a warning to the user if it detects that there is the | |
7777 | possibility that GDB is guessing which thread (or process) to | |
7778 | report. | |
7779 | ||
7780 | Note that this is called before GDB fetches the updated thread list from the | |
7781 | target. So it's possible for the stop reply to be ambiguous and for GDB to | |
7782 | not realize it. For example, if there's initially one thread, the target | |
7783 | spawns a second thread, and then sends a stop reply without an id that | |
7784 | concerns the first thread. GDB will assume the stop reply is about the | |
7785 | first thread - the only thread it knows about - without printing a warning. | |
7786 | Anyway, if the remote meant for the stop reply to be about the second thread, | |
7787 | then it would be really broken, because GDB doesn't know about that thread | |
7788 | yet. */ | |
74531fed | 7789 | |
6b8edb51 | 7790 | ptid_t |
8f66807b AB |
7791 | remote_target::select_thread_for_ambiguous_stop_reply |
7792 | (const struct target_waitstatus *status) | |
74531fed | 7793 | { |
8f66807b AB |
7794 | /* Some stop events apply to all threads in an inferior, while others |
7795 | only apply to a single thread. */ | |
7796 | bool process_wide_stop | |
7797 | = (status->kind == TARGET_WAITKIND_EXITED | |
7798 | || status->kind == TARGET_WAITKIND_SIGNALLED); | |
74531fed | 7799 | |
8f66807b AB |
7800 | thread_info *first_resumed_thread = nullptr; |
7801 | bool ambiguous = false; | |
74531fed | 7802 | |
8f66807b AB |
7803 | /* Consider all non-exited threads of the target, find the first resumed |
7804 | one. */ | |
7805 | for (thread_info *thr : all_non_exited_threads (this)) | |
24ed6739 | 7806 | { |
8f66807b | 7807 | remote_thread_info *remote_thr = get_remote_thread_info (thr); |
cada5fc9 | 7808 | |
8f66807b AB |
7809 | if (remote_thr->resume_state () != resume_state::RESUMED) |
7810 | continue; | |
24ed6739 | 7811 | |
8f66807b AB |
7812 | if (first_resumed_thread == nullptr) |
7813 | first_resumed_thread = thr; | |
7814 | else if (!process_wide_stop | |
7815 | || first_resumed_thread->ptid.pid () != thr->ptid.pid ()) | |
7816 | ambiguous = true; | |
7817 | } | |
7818 | ||
7819 | gdb_assert (first_resumed_thread != nullptr); | |
cada5fc9 | 7820 | |
8f66807b AB |
7821 | /* Warn if the remote target is sending ambiguous stop replies. */ |
7822 | if (ambiguous) | |
7823 | { | |
7824 | static bool warned = false; | |
7825 | ||
7826 | if (!warned) | |
7827 | { | |
7828 | /* If you are seeing this warning then the remote target has | |
7829 | stopped without specifying a thread-id, but the target | |
7830 | does have multiple threads (or inferiors), and so GDB is | |
7831 | having to guess which thread stopped. | |
7832 | ||
7833 | Examples of what might cause this are the target sending | |
7834 | and 'S' stop packet, or a 'T' stop packet and not | |
7835 | including a thread-id. | |
7836 | ||
7837 | Additionally, the target might send a 'W' or 'X packet | |
7838 | without including a process-id, when the target has | |
7839 | multiple running inferiors. */ | |
7840 | if (process_wide_stop) | |
7841 | warning (_("multi-inferior target stopped without " | |
7842 | "sending a process-id, using first " | |
7843 | "non-exited inferior")); | |
cada5fc9 | 7844 | else |
8f66807b AB |
7845 | warning (_("multi-threaded target stopped without " |
7846 | "sending a thread-id, using first " | |
7847 | "non-exited thread")); | |
7848 | warned = true; | |
24ed6739 | 7849 | } |
24ed6739 | 7850 | } |
74531fed | 7851 | |
8f66807b AB |
7852 | /* If this is a stop for all threads then don't use a particular threads |
7853 | ptid, instead create a new ptid where only the pid field is set. */ | |
7854 | if (process_wide_stop) | |
7855 | return ptid_t (first_resumed_thread->ptid.pid ()); | |
7856 | else | |
7857 | return first_resumed_thread->ptid; | |
7858 | } | |
7859 | ||
7860 | /* Called when it is decided that STOP_REPLY holds the info of the | |
7861 | event that is to be returned to the core. This function always | |
7862 | destroys STOP_REPLY. */ | |
7863 | ||
7864 | ptid_t | |
7865 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
7866 | struct target_waitstatus *status) | |
7867 | { | |
7868 | *status = stop_reply->ws; | |
7869 | ptid_t ptid = stop_reply->ptid; | |
7870 | ||
7871 | /* If no thread/process was reported by the stub then select a suitable | |
7872 | thread/process. */ | |
7873 | if (ptid == null_ptid) | |
7874 | ptid = select_thread_for_ambiguous_stop_reply (status); | |
7875 | gdb_assert (ptid != null_ptid); | |
7876 | ||
5f3563ea | 7877 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7878 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7879 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7880 | { |
5f3563ea | 7881 | /* Expedited registers. */ |
32603266 | 7882 | if (!stop_reply->regcache.empty ()) |
5f3563ea | 7883 | { |
217f1f79 | 7884 | struct regcache *regcache |
5b6d1e4f | 7885 | = get_thread_arch_regcache (this, ptid, stop_reply->arch); |
5f3563ea | 7886 | |
32603266 TT |
7887 | for (cached_reg_t ® : stop_reply->regcache) |
7888 | { | |
7889 | regcache->raw_supply (reg.num, reg.data); | |
7890 | xfree (reg.data); | |
7891 | } | |
d1dff226 | 7892 | |
32603266 | 7893 | stop_reply->regcache.clear (); |
5f3563ea | 7894 | } |
74531fed | 7895 | |
1941c569 | 7896 | remote_notice_new_inferior (ptid, 0); |
5b6d1e4f | 7897 | remote_thread_info *remote_thr = get_remote_thread_info (this, ptid); |
799a2abe PA |
7898 | remote_thr->core = stop_reply->core; |
7899 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7900 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
c9d22089 SM |
7901 | |
7902 | if (target_is_non_stop_p ()) | |
7903 | { | |
7904 | /* If the target works in non-stop mode, a stop-reply indicates that | |
7905 | only this thread stopped. */ | |
7906 | remote_thr->set_not_resumed (); | |
7907 | } | |
7908 | else | |
7909 | { | |
7910 | /* If the target works in all-stop mode, a stop-reply indicates that | |
7911 | all the target's threads stopped. */ | |
7912 | for (thread_info *tp : all_non_exited_threads (this)) | |
7913 | get_remote_thread_info (tp)->set_not_resumed (); | |
7914 | } | |
74531fed PA |
7915 | } |
7916 | ||
32603266 | 7917 | delete stop_reply; |
74531fed PA |
7918 | return ptid; |
7919 | } | |
7920 | ||
7921 | /* The non-stop mode version of target_wait. */ | |
7922 | ||
6b8edb51 | 7923 | ptid_t |
b60cea74 TT |
7924 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, |
7925 | target_wait_flags options) | |
74531fed PA |
7926 | { |
7927 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7928 | struct stop_reply *stop_reply; |
7929 | int ret; | |
fee9eda9 | 7930 | int is_notif = 0; |
74531fed PA |
7931 | |
7932 | /* If in non-stop mode, get out of getpkt even if a | |
7933 | notification is received. */ | |
7934 | ||
8d64371b | 7935 | ret = getpkt_or_notif_sane (&rs->buf, 0 /* forever */, &is_notif); |
74531fed PA |
7936 | while (1) |
7937 | { | |
fee9eda9 | 7938 | if (ret != -1 && !is_notif) |
74531fed PA |
7939 | switch (rs->buf[0]) |
7940 | { | |
7941 | case 'E': /* Error of some sort. */ | |
7942 | /* We're out of sync with the target now. Did it continue | |
7943 | or not? We can't tell which thread it was in non-stop, | |
7944 | so just ignore this. */ | |
8d64371b | 7945 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
74531fed PA |
7946 | break; |
7947 | case 'O': /* Console output. */ | |
8d64371b | 7948 | remote_console_output (&rs->buf[1]); |
74531fed PA |
7949 | break; |
7950 | default: | |
8d64371b | 7951 | warning (_("Invalid remote reply: %s"), rs->buf.data ()); |
74531fed PA |
7952 | break; |
7953 | } | |
7954 | ||
7955 | /* Acknowledge a pending stop reply that may have arrived in the | |
7956 | mean time. */ | |
f48ff2a7 | 7957 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7958 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7959 | |
7960 | /* If indeed we noticed a stop reply, we're done. */ | |
7961 | stop_reply = queued_stop_reply (ptid); | |
7962 | if (stop_reply != NULL) | |
7963 | return process_stop_reply (stop_reply, status); | |
7964 | ||
47608cb1 | 7965 | /* Still no event. If we're just polling for an event, then |
74531fed | 7966 | return to the event loop. */ |
47608cb1 | 7967 | if (options & TARGET_WNOHANG) |
74531fed PA |
7968 | { |
7969 | status->kind = TARGET_WAITKIND_IGNORE; | |
7970 | return minus_one_ptid; | |
7971 | } | |
7972 | ||
47608cb1 | 7973 | /* Otherwise do a blocking wait. */ |
8d64371b | 7974 | ret = getpkt_or_notif_sane (&rs->buf, 1 /* forever */, &is_notif); |
74531fed PA |
7975 | } |
7976 | } | |
7977 | ||
31ba933e PA |
7978 | /* Return the first resumed thread. */ |
7979 | ||
7980 | static ptid_t | |
5b6d1e4f | 7981 | first_remote_resumed_thread (remote_target *target) |
31ba933e | 7982 | { |
5b6d1e4f | 7983 | for (thread_info *tp : all_non_exited_threads (target, minus_one_ptid)) |
31ba933e PA |
7984 | if (tp->resumed) |
7985 | return tp->ptid; | |
7986 | return null_ptid; | |
7987 | } | |
7988 | ||
74531fed PA |
7989 | /* Wait until the remote machine stops, then return, storing status in |
7990 | STATUS just as `wait' would. */ | |
7991 | ||
6b8edb51 | 7992 | ptid_t |
b60cea74 TT |
7993 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, |
7994 | target_wait_flags options) | |
74531fed PA |
7995 | { |
7996 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7997 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7998 | char *buf; |
74531fed PA |
7999 | struct stop_reply *stop_reply; |
8000 | ||
47608cb1 PA |
8001 | again: |
8002 | ||
74531fed PA |
8003 | status->kind = TARGET_WAITKIND_IGNORE; |
8004 | status->value.integer = 0; | |
8005 | ||
8006 | stop_reply = queued_stop_reply (ptid); | |
8007 | if (stop_reply != NULL) | |
8008 | return process_stop_reply (stop_reply, status); | |
8009 | ||
8010 | if (rs->cached_wait_status) | |
8011 | /* Use the cached wait status, but only once. */ | |
8012 | rs->cached_wait_status = 0; | |
8013 | else | |
8014 | { | |
8015 | int ret; | |
722247f1 | 8016 | int is_notif; |
567420d1 | 8017 | int forever = ((options & TARGET_WNOHANG) == 0 |
6b8edb51 | 8018 | && rs->wait_forever_enabled_p); |
567420d1 PA |
8019 | |
8020 | if (!rs->waiting_for_stop_reply) | |
8021 | { | |
8022 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
8023 | return minus_one_ptid; | |
8024 | } | |
74531fed | 8025 | |
74531fed PA |
8026 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
8027 | _never_ wait for ever -> test on target_is_async_p(). | |
8028 | However, before we do that we need to ensure that the caller | |
8029 | knows how to take the target into/out of async mode. */ | |
8d64371b | 8030 | ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif); |
722247f1 YQ |
8031 | |
8032 | /* GDB gets a notification. Return to core as this event is | |
8033 | not interesting. */ | |
8034 | if (ret != -1 && is_notif) | |
8035 | return minus_one_ptid; | |
567420d1 PA |
8036 | |
8037 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
8038 | return minus_one_ptid; | |
74531fed PA |
8039 | } |
8040 | ||
8d64371b | 8041 | buf = rs->buf.data (); |
74531fed | 8042 | |
3a29589a DJ |
8043 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
8044 | an 'F' or 'O' packet. */ | |
8045 | if (buf[0] != 'F' && buf[0] != 'O') | |
8046 | rs->ctrlc_pending_p = 0; | |
8047 | ||
74531fed PA |
8048 | switch (buf[0]) |
8049 | { | |
8050 | case 'E': /* Error of some sort. */ | |
8051 | /* We're out of sync with the target now. Did it continue or | |
8052 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
8053 | rs->waiting_for_stop_reply = 0; |
8054 | ||
74531fed PA |
8055 | warning (_("Remote failure reply: %s"), buf); |
8056 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 8057 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
8058 | break; |
8059 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
8060 | /* GDB may access the inferior memory while handling the File-I/O |
8061 | request, but we don't want GDB accessing memory while waiting | |
8062 | for a stop reply. See the comments in putpkt_binary. Set | |
8063 | waiting_for_stop_reply to 0 temporarily. */ | |
8064 | rs->waiting_for_stop_reply = 0; | |
6b8edb51 | 8065 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); |
3a29589a | 8066 | rs->ctrlc_pending_p = 0; |
e42e5352 YQ |
8067 | /* GDB handled the File-I/O request, and the target is running |
8068 | again. Keep waiting for events. */ | |
8069 | rs->waiting_for_stop_reply = 1; | |
74531fed | 8070 | break; |
f2faf941 | 8071 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 8072 | { |
29090fb6 LM |
8073 | /* There is a stop reply to handle. */ |
8074 | rs->waiting_for_stop_reply = 0; | |
8075 | ||
8076 | stop_reply | |
6b8edb51 PA |
8077 | = (struct stop_reply *) remote_notif_parse (this, |
8078 | ¬if_client_stop, | |
8d64371b | 8079 | rs->buf.data ()); |
74531fed | 8080 | |
74531fed | 8081 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
8082 | break; |
8083 | } | |
8084 | case 'O': /* Console output. */ | |
8085 | remote_console_output (buf + 1); | |
c8e38a49 PA |
8086 | break; |
8087 | case '\0': | |
b73be471 | 8088 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
8089 | { |
8090 | /* Zero length reply means that we tried 'S' or 'C' and the | |
8091 | remote system doesn't support it. */ | |
223ffa71 | 8092 | target_terminal::ours_for_output (); |
c8e38a49 PA |
8093 | printf_filtered |
8094 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
8095 | gdb_signal_to_name (rs->last_sent_signal)); |
8096 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 8097 | target_terminal::inferior (); |
c8e38a49 | 8098 | |
f5c4fcd9 TT |
8099 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
8100 | putpkt (buf); | |
c8e38a49 | 8101 | break; |
43ff13b4 | 8102 | } |
86a73007 | 8103 | /* fallthrough */ |
c8e38a49 PA |
8104 | default: |
8105 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 8106 | break; |
43ff13b4 | 8107 | } |
c8e38a49 | 8108 | |
f2faf941 PA |
8109 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
8110 | return minus_one_ptid; | |
8111 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
8112 | { |
8113 | /* Nothing interesting happened. If we're doing a non-blocking | |
8114 | poll, we're done. Otherwise, go back to waiting. */ | |
8115 | if (options & TARGET_WNOHANG) | |
8116 | return minus_one_ptid; | |
8117 | else | |
8118 | goto again; | |
8119 | } | |
74531fed PA |
8120 | else if (status->kind != TARGET_WAITKIND_EXITED |
8121 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 | 8122 | { |
d7e15655 | 8123 | if (event_ptid != null_ptid) |
47f8a51d | 8124 | record_currthread (rs, event_ptid); |
82f73884 | 8125 | else |
5b6d1e4f | 8126 | event_ptid = first_remote_resumed_thread (this); |
43ff13b4 | 8127 | } |
74531fed | 8128 | else |
e7af6c70 TBA |
8129 | { |
8130 | /* A process exit. Invalidate our notion of current thread. */ | |
8131 | record_currthread (rs, minus_one_ptid); | |
8132 | /* It's possible that the packet did not include a pid. */ | |
8133 | if (event_ptid == null_ptid) | |
5b6d1e4f | 8134 | event_ptid = first_remote_resumed_thread (this); |
e7af6c70 TBA |
8135 | /* EVENT_PTID could still be NULL_PTID. Double-check. */ |
8136 | if (event_ptid == null_ptid) | |
8137 | event_ptid = magic_null_ptid; | |
8138 | } | |
79d7f229 | 8139 | |
82f73884 | 8140 | return event_ptid; |
43ff13b4 JM |
8141 | } |
8142 | ||
74531fed PA |
8143 | /* Wait until the remote machine stops, then return, storing status in |
8144 | STATUS just as `wait' would. */ | |
8145 | ||
f6ac5f3d | 8146 | ptid_t |
b60cea74 TT |
8147 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, |
8148 | target_wait_flags options) | |
c8e38a49 PA |
8149 | { |
8150 | ptid_t event_ptid; | |
8151 | ||
6efcd9a8 | 8152 | if (target_is_non_stop_p ()) |
6b8edb51 | 8153 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 8154 | else |
6b8edb51 | 8155 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 8156 | |
d9d41e78 | 8157 | if (target_is_async_p ()) |
c8e38a49 | 8158 | { |
6b8edb51 PA |
8159 | remote_state *rs = get_remote_state (); |
8160 | ||
74531fed PA |
8161 | /* If there are are events left in the queue tell the event loop |
8162 | to return here. */ | |
953edf2b | 8163 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 8164 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
c8e38a49 | 8165 | } |
c8e38a49 PA |
8166 | |
8167 | return event_ptid; | |
8168 | } | |
8169 | ||
74ca34ce | 8170 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 8171 | |
6b8edb51 PA |
8172 | int |
8173 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
8174 | packet_reg *reg) | |
b96ec7ac | 8175 | { |
ac7936df | 8176 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 8177 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 8178 | char *buf, *p; |
9890e433 | 8179 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
8180 | int i; |
8181 | ||
4082afcc | 8182 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
8183 | return 0; |
8184 | ||
8185 | if (reg->pnum == -1) | |
8186 | return 0; | |
8187 | ||
8d64371b | 8188 | p = rs->buf.data (); |
fcad0fa4 | 8189 | *p++ = 'p'; |
74ca34ce | 8190 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 8191 | *p++ = '\0'; |
1f4437a4 | 8192 | putpkt (rs->buf); |
8d64371b | 8193 | getpkt (&rs->buf, 0); |
3f9a994c | 8194 | |
8d64371b | 8195 | buf = rs->buf.data (); |
2e9f7625 | 8196 | |
8d64371b | 8197 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_p])) |
74ca34ce DJ |
8198 | { |
8199 | case PACKET_OK: | |
8200 | break; | |
8201 | case PACKET_UNKNOWN: | |
8202 | return 0; | |
8203 | case PACKET_ERROR: | |
27a9c0bf | 8204 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 8205 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
8206 | reg->regnum), |
8207 | buf); | |
74ca34ce | 8208 | } |
3f9a994c JB |
8209 | |
8210 | /* If this register is unfetchable, tell the regcache. */ | |
8211 | if (buf[0] == 'x') | |
8480adf2 | 8212 | { |
73e1c03f | 8213 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 8214 | return 1; |
b96ec7ac | 8215 | } |
b96ec7ac | 8216 | |
3f9a994c JB |
8217 | /* Otherwise, parse and supply the value. */ |
8218 | p = buf; | |
8219 | i = 0; | |
8220 | while (p[0] != 0) | |
8221 | { | |
8222 | if (p[1] == 0) | |
74ca34ce | 8223 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
8224 | |
8225 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8226 | p += 2; | |
8227 | } | |
73e1c03f | 8228 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 8229 | return 1; |
b96ec7ac AC |
8230 | } |
8231 | ||
74ca34ce DJ |
8232 | /* Fetch the registers included in the target's 'g' packet. */ |
8233 | ||
6b8edb51 PA |
8234 | int |
8235 | remote_target::send_g_packet () | |
c906108c | 8236 | { |
d01949b6 | 8237 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 8238 | int buf_len; |
c906108c | 8239 | |
8d64371b | 8240 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "g"); |
b75abf5b | 8241 | putpkt (rs->buf); |
8d64371b | 8242 | getpkt (&rs->buf, 0); |
b75abf5b AK |
8243 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
8244 | error (_("Could not read registers; remote failure reply '%s'"), | |
dda83cd7 | 8245 | rs->buf.data ()); |
c906108c | 8246 | |
29709017 DJ |
8247 | /* We can get out of synch in various cases. If the first character |
8248 | in the buffer is not a hex character, assume that has happened | |
8249 | and try to fetch another packet to read. */ | |
8250 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
8251 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
8252 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
8253 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
8254 | { | |
8255 | if (remote_debug) | |
8256 | fprintf_unfiltered (gdb_stdlog, | |
8257 | "Bad register packet; fetching a new packet\n"); | |
8d64371b | 8258 | getpkt (&rs->buf, 0); |
29709017 DJ |
8259 | } |
8260 | ||
8d64371b | 8261 | buf_len = strlen (rs->buf.data ()); |
74ca34ce DJ |
8262 | |
8263 | /* Sanity check the received packet. */ | |
8264 | if (buf_len % 2 != 0) | |
8d64371b | 8265 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf.data ()); |
29709017 DJ |
8266 | |
8267 | return buf_len / 2; | |
8268 | } | |
8269 | ||
6b8edb51 PA |
8270 | void |
8271 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 8272 | { |
ac7936df | 8273 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 8274 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8275 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
8276 | int i, buf_len; |
8277 | char *p; | |
8278 | char *regs; | |
8279 | ||
8d64371b | 8280 | buf_len = strlen (rs->buf.data ()); |
29709017 DJ |
8281 | |
8282 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 8283 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 | 8284 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8d64371b TT |
8285 | "bytes): %s"), |
8286 | rsa->sizeof_g_packet, buf_len / 2, | |
8287 | rs->buf.data ()); | |
74ca34ce DJ |
8288 | |
8289 | /* Save the size of the packet sent to us by the target. It is used | |
8290 | as a heuristic when determining the max size of packets that the | |
8291 | target can safely receive. */ | |
8292 | if (rsa->actual_register_packet_size == 0) | |
8293 | rsa->actual_register_packet_size = buf_len; | |
8294 | ||
8295 | /* If this is smaller than we guessed the 'g' packet would be, | |
8296 | update our records. A 'g' reply that doesn't include a register's | |
8297 | value implies either that the register is not available, or that | |
8298 | the 'p' packet must be used. */ | |
8299 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8300 | { |
9dc193c3 | 8301 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8302 | |
4a22f64d | 8303 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8304 | { |
9dc193c3 LF |
8305 | long offset = rsa->regs[i].offset; |
8306 | long reg_size = register_size (gdbarch, i); | |
8307 | ||
74ca34ce DJ |
8308 | if (rsa->regs[i].pnum == -1) |
8309 | continue; | |
8310 | ||
9dc193c3 | 8311 | if (offset >= sizeof_g_packet) |
74ca34ce | 8312 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8313 | else if (offset + reg_size > sizeof_g_packet) |
8314 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8315 | else |
74ca34ce | 8316 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8317 | } |
9dc193c3 LF |
8318 | |
8319 | /* Looks valid enough, we can assume this is the correct length | |
dda83cd7 SM |
8320 | for a 'g' packet. It's important not to adjust |
8321 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8322 | this "if" won't be run the next time the method is called | |
8323 | with a packet of the same size and one of the internal errors | |
8324 | below will trigger instead. */ | |
9dc193c3 | 8325 | rsa->sizeof_g_packet = sizeof_g_packet; |
74ca34ce | 8326 | } |
b323314b | 8327 | |
224c3ddb | 8328 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8329 | |
8330 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8331 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8332 | |
c906108c SS |
8333 | /* Reply describes registers byte by byte, each byte encoded as two |
8334 | hex characters. Suck them all up, then supply them to the | |
8335 | register cacheing/storage mechanism. */ | |
8336 | ||
8d64371b | 8337 | p = rs->buf.data (); |
ea9c271d | 8338 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8339 | { |
74ca34ce DJ |
8340 | if (p[0] == 0 || p[1] == 0) |
8341 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
8342 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8343 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 8344 | |
c906108c | 8345 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8346 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8347 | else |
8348 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8349 | p += 2; | |
8350 | } | |
8351 | ||
a744cf53 MS |
8352 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8353 | { | |
8354 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8355 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8356 | |
8357 | if (r->in_g_packet) | |
8358 | { | |
8d64371b | 8359 | if ((r->offset + reg_size) * 2 > strlen (rs->buf.data ())) |
a744cf53 MS |
8360 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
8361 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8362 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8363 | else if (rs->buf[r->offset * 2] == 'x') |
8364 | { | |
8d64371b | 8365 | gdb_assert (r->offset * 2 < strlen (rs->buf.data ())); |
a744cf53 MS |
8366 | /* The register isn't available, mark it as such (at |
8367 | the same time setting the value to zero). */ | |
73e1c03f | 8368 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8369 | } |
8370 | else | |
73e1c03f | 8371 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8372 | } |
8373 | } | |
c906108c SS |
8374 | } |
8375 | ||
6b8edb51 PA |
8376 | void |
8377 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8378 | { |
8379 | send_g_packet (); | |
56be3814 | 8380 | process_g_packet (regcache); |
29709017 DJ |
8381 | } |
8382 | ||
e6e4e701 PA |
8383 | /* Make the remote selected traceframe match GDB's selected |
8384 | traceframe. */ | |
8385 | ||
6b8edb51 PA |
8386 | void |
8387 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8388 | { |
8389 | int newnum; | |
262e1174 | 8390 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8391 | |
262e1174 | 8392 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8393 | return; |
8394 | ||
8395 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8396 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8397 | |
8398 | newnum = target_trace_find (tfind_number, | |
8399 | get_traceframe_number (), 0, 0, NULL); | |
8400 | ||
8401 | /* Should not happen. If it does, all bets are off. */ | |
8402 | if (newnum != get_traceframe_number ()) | |
8403 | warning (_("could not set remote traceframe")); | |
8404 | } | |
8405 | ||
f6ac5f3d PA |
8406 | void |
8407 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8408 | { |
ac7936df | 8409 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8410 | struct remote_state *rs = get_remote_state (); |
8411 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8412 | int i; |
8413 | ||
e6e4e701 | 8414 | set_remote_traceframe (); |
222312d3 | 8415 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8416 | |
8417 | if (regnum >= 0) | |
8418 | { | |
5cd63fda | 8419 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8420 | |
74ca34ce DJ |
8421 | gdb_assert (reg != NULL); |
8422 | ||
8423 | /* If this register might be in the 'g' packet, try that first - | |
8424 | we are likely to read more than one register. If this is the | |
8425 | first 'g' packet, we might be overly optimistic about its | |
8426 | contents, so fall back to 'p'. */ | |
8427 | if (reg->in_g_packet) | |
8428 | { | |
56be3814 | 8429 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8430 | if (reg->in_g_packet) |
8431 | return; | |
8432 | } | |
8433 | ||
56be3814 | 8434 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8435 | return; |
8436 | ||
8437 | /* This register is not available. */ | |
73e1c03f | 8438 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8439 | |
8440 | return; | |
8441 | } | |
8442 | ||
56be3814 | 8443 | fetch_registers_using_g (regcache); |
74ca34ce | 8444 | |
5cd63fda | 8445 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8446 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8447 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8448 | { |
8449 | /* This register is not available. */ | |
73e1c03f | 8450 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8451 | } |
8452 | } | |
8453 | ||
c906108c SS |
8454 | /* Prepare to store registers. Since we may send them all (using a |
8455 | 'G' request), we have to read out the ones we don't want to change | |
8456 | first. */ | |
8457 | ||
f6ac5f3d PA |
8458 | void |
8459 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8460 | { |
9d6eea31 PA |
8461 | struct remote_state *rs = get_remote_state (); |
8462 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8463 | int i; |
cf0e1e0d | 8464 | |
c906108c | 8465 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8466 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8467 | { |
8468 | case PACKET_DISABLE: | |
8469 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8470 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8471 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8472 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8473 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8474 | break; |
8475 | case PACKET_ENABLE: | |
8476 | break; | |
8477 | } | |
8478 | } | |
8479 | ||
ad10f812 | 8480 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8481 | packet was not recognized. */ |
5a2468f5 | 8482 | |
6b8edb51 PA |
8483 | int |
8484 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8485 | packet_reg *reg) | |
5a2468f5 | 8486 | { |
ac7936df | 8487 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8488 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8489 | /* Try storing a single register. */ |
8d64371b | 8490 | char *buf = rs->buf.data (); |
9890e433 | 8491 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8492 | char *p; |
5a2468f5 | 8493 | |
4082afcc | 8494 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8495 | return 0; |
8496 | ||
8497 | if (reg->pnum == -1) | |
8498 | return 0; | |
8499 | ||
ea9c271d | 8500 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8501 | p = buf + strlen (buf); |
34a79281 | 8502 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8503 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 | 8504 | putpkt (rs->buf); |
8d64371b | 8505 | getpkt (&rs->buf, 0); |
5a2468f5 | 8506 | |
74ca34ce DJ |
8507 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8508 | { | |
8509 | case PACKET_OK: | |
8510 | return 1; | |
8511 | case PACKET_ERROR: | |
27a9c0bf | 8512 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8d64371b | 8513 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf.data ()); |
74ca34ce DJ |
8514 | case PACKET_UNKNOWN: |
8515 | return 0; | |
8516 | default: | |
8517 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8518 | } | |
c906108c SS |
8519 | } |
8520 | ||
23860348 MS |
8521 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8522 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8523 | |
6b8edb51 PA |
8524 | void |
8525 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8526 | { |
d01949b6 | 8527 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8528 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8529 | gdb_byte *regs; |
c906108c SS |
8530 | char *p; |
8531 | ||
193cb69f AC |
8532 | /* Extract all the registers in the regcache copying them into a |
8533 | local buffer. */ | |
8534 | { | |
b323314b | 8535 | int i; |
a744cf53 | 8536 | |
224c3ddb | 8537 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8538 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8539 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8540 | { |
ea9c271d | 8541 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8542 | |
b323314b | 8543 | if (r->in_g_packet) |
34a79281 | 8544 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8545 | } |
8546 | } | |
c906108c SS |
8547 | |
8548 | /* Command describes registers byte by byte, | |
8549 | each byte encoded as two hex characters. */ | |
8d64371b | 8550 | p = rs->buf.data (); |
193cb69f | 8551 | *p++ = 'G'; |
74ca34ce | 8552 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 | 8553 | putpkt (rs->buf); |
8d64371b | 8554 | getpkt (&rs->buf, 0); |
1f4437a4 | 8555 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
27a9c0bf | 8556 | error (_("Could not write registers; remote failure reply '%s'"), |
8d64371b | 8557 | rs->buf.data ()); |
c906108c | 8558 | } |
74ca34ce DJ |
8559 | |
8560 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8561 | of the register cache buffer. FIXME: ignores errors. */ | |
8562 | ||
f6ac5f3d PA |
8563 | void |
8564 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8565 | { |
5cd63fda | 8566 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8567 | struct remote_state *rs = get_remote_state (); |
8568 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8569 | int i; |
8570 | ||
e6e4e701 | 8571 | set_remote_traceframe (); |
222312d3 | 8572 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8573 | |
8574 | if (regnum >= 0) | |
8575 | { | |
5cd63fda | 8576 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8577 | |
74ca34ce DJ |
8578 | gdb_assert (reg != NULL); |
8579 | ||
8580 | /* Always prefer to store registers using the 'P' packet if | |
8581 | possible; we often change only a small number of registers. | |
8582 | Sometimes we change a larger number; we'd need help from a | |
8583 | higher layer to know to use 'G'. */ | |
56be3814 | 8584 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8585 | return; |
8586 | ||
8587 | /* For now, don't complain if we have no way to write the | |
8588 | register. GDB loses track of unavailable registers too | |
8589 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8590 | any way to read the register, either... */ |
74ca34ce DJ |
8591 | if (!reg->in_g_packet) |
8592 | return; | |
8593 | ||
56be3814 | 8594 | store_registers_using_G (regcache); |
74ca34ce DJ |
8595 | return; |
8596 | } | |
8597 | ||
56be3814 | 8598 | store_registers_using_G (regcache); |
74ca34ce | 8599 | |
5cd63fda | 8600 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8601 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8602 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8603 | /* See above for why we do not issue an error here. */ |
8604 | continue; | |
8605 | } | |
c906108c SS |
8606 | \f |
8607 | ||
8608 | /* Return the number of hex digits in num. */ | |
8609 | ||
8610 | static int | |
fba45db2 | 8611 | hexnumlen (ULONGEST num) |
c906108c SS |
8612 | { |
8613 | int i; | |
8614 | ||
8615 | for (i = 0; num != 0; i++) | |
8616 | num >>= 4; | |
8617 | ||
325fac50 | 8618 | return std::max (i, 1); |
c906108c SS |
8619 | } |
8620 | ||
2df3850c | 8621 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8622 | |
8623 | static int | |
fba45db2 | 8624 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8625 | { |
c906108c | 8626 | int len = hexnumlen (num); |
a744cf53 | 8627 | |
2df3850c JM |
8628 | return hexnumnstr (buf, num, len); |
8629 | } | |
8630 | ||
c906108c | 8631 | |
2df3850c | 8632 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8633 | |
2df3850c | 8634 | static int |
fba45db2 | 8635 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8636 | { |
8637 | int i; | |
8638 | ||
8639 | buf[width] = '\0'; | |
8640 | ||
8641 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8642 | { |
c5aa993b | 8643 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8644 | num >>= 4; |
8645 | } | |
8646 | ||
2df3850c | 8647 | return width; |
c906108c SS |
8648 | } |
8649 | ||
23860348 | 8650 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8651 | |
8652 | static CORE_ADDR | |
fba45db2 | 8653 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8654 | { |
883b9c6c | 8655 | unsigned int address_size = remote_address_size; |
a744cf53 | 8656 | |
911c95a5 UW |
8657 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8658 | if (!address_size) | |
f5656ead | 8659 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8660 | |
8661 | if (address_size > 0 | |
8662 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8663 | { |
8664 | /* Only create a mask when that mask can safely be constructed | |
dda83cd7 | 8665 | in a ULONGEST variable. */ |
c906108c | 8666 | ULONGEST mask = 1; |
a744cf53 | 8667 | |
911c95a5 | 8668 | mask = (mask << address_size) - 1; |
c906108c SS |
8669 | addr &= mask; |
8670 | } | |
8671 | return addr; | |
8672 | } | |
8673 | ||
8674 | /* Determine whether the remote target supports binary downloading. | |
8675 | This is accomplished by sending a no-op memory write of zero length | |
8676 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8677 | the whole packet, since many stubs strip the eighth bit and |
8678 | subsequently compute a wrong checksum, which causes real havoc with | |
8679 | remote_write_bytes. | |
7a292a7a | 8680 | |
96baa820 | 8681 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8682 | clean. In cases like this, the user should clear "remote |
23860348 | 8683 | X-packet". */ |
96baa820 | 8684 | |
6b8edb51 PA |
8685 | void |
8686 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 8687 | { |
d01949b6 | 8688 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8689 | |
4082afcc | 8690 | switch (packet_support (PACKET_X)) |
c906108c | 8691 | { |
96baa820 JM |
8692 | case PACKET_DISABLE: |
8693 | break; | |
8694 | case PACKET_ENABLE: | |
8695 | break; | |
8696 | case PACKET_SUPPORT_UNKNOWN: | |
8697 | { | |
96baa820 | 8698 | char *p; |
802188a7 | 8699 | |
8d64371b | 8700 | p = rs->buf.data (); |
96baa820 JM |
8701 | *p++ = 'X'; |
8702 | p += hexnumstr (p, (ULONGEST) addr); | |
8703 | *p++ = ','; | |
8704 | p += hexnumstr (p, (ULONGEST) 0); | |
8705 | *p++ = ':'; | |
8706 | *p = '\0'; | |
802188a7 | 8707 | |
8d64371b TT |
8708 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8709 | getpkt (&rs->buf, 0); | |
c906108c | 8710 | |
2e9f7625 | 8711 | if (rs->buf[0] == '\0') |
96baa820 JM |
8712 | { |
8713 | if (remote_debug) | |
8714 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8715 | "binary downloading NOT " |
8716 | "supported by target\n"); | |
444abaca | 8717 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8718 | } |
8719 | else | |
8720 | { | |
8721 | if (remote_debug) | |
8722 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8723 | "binary downloading supported by target\n"); |
444abaca | 8724 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8725 | } |
8726 | break; | |
8727 | } | |
c906108c SS |
8728 | } |
8729 | } | |
8730 | ||
124e13d9 SM |
8731 | /* Helper function to resize the payload in order to try to get a good |
8732 | alignment. We try to write an amount of data such that the next write will | |
8733 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8734 | ||
8735 | static int | |
8736 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8737 | { | |
8738 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8739 | } | |
8740 | ||
c906108c SS |
8741 | /* Write memory data directly to the remote machine. |
8742 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8743 | HEADER is the starting part of the packet. |
c906108c SS |
8744 | MEMADDR is the address in the remote memory space. |
8745 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8746 | LEN_UNITS is the number of addressable units to write. |
8747 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8748 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8749 | should send data as binary ('X'), or hex-encoded ('M'). | |
8750 | ||
8751 | The function creates packet of the form | |
8752 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8753 | ||
124e13d9 | 8754 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8755 | |
8756 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8757 | are omitted. | |
8758 | ||
9b409511 | 8759 | Return the transferred status, error or OK (an |
124e13d9 SM |
8760 | 'enum target_xfer_status' value). Save the number of addressable units |
8761 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8762 | ||
8763 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8764 | exchange between gdb and the stub could look like (?? in place of the | |
8765 | checksum): | |
8766 | ||
8767 | -> $m1000,4#?? | |
8768 | <- aaaabbbbccccdddd | |
8769 | ||
8770 | -> $M1000,3:eeeeffffeeee#?? | |
8771 | <- OK | |
8772 | ||
8773 | -> $m1000,4#?? | |
8774 | <- eeeeffffeeeedddd */ | |
c906108c | 8775 | |
6b8edb51 PA |
8776 | target_xfer_status |
8777 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
8778 | const gdb_byte *myaddr, | |
8779 | ULONGEST len_units, | |
8780 | int unit_size, | |
8781 | ULONGEST *xfered_len_units, | |
8782 | char packet_format, int use_length) | |
c906108c | 8783 | { |
6d820c5c | 8784 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8785 | char *p; |
a76d924d DJ |
8786 | char *plen = NULL; |
8787 | int plenlen = 0; | |
124e13d9 SM |
8788 | int todo_units; |
8789 | int units_written; | |
8790 | int payload_capacity_bytes; | |
8791 | int payload_length_bytes; | |
a76d924d DJ |
8792 | |
8793 | if (packet_format != 'X' && packet_format != 'M') | |
8794 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8795 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8796 | |
124e13d9 | 8797 | if (len_units == 0) |
9b409511 | 8798 | return TARGET_XFER_EOF; |
b2182ed2 | 8799 | |
124e13d9 | 8800 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8801 | |
6d820c5c DJ |
8802 | /* The packet buffer will be large enough for the payload; |
8803 | get_memory_packet_size ensures this. */ | |
a76d924d | 8804 | rs->buf[0] = '\0'; |
c906108c | 8805 | |
a257b5bb | 8806 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8807 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8808 | ||
124e13d9 | 8809 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8810 | if (!use_length) |
0df8b418 | 8811 | /* The comma won't be used. */ |
124e13d9 SM |
8812 | payload_capacity_bytes += 1; |
8813 | payload_capacity_bytes -= strlen (header); | |
8814 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8815 | |
a76d924d | 8816 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8817 | |
8d64371b TT |
8818 | strcat (rs->buf.data (), header); |
8819 | p = rs->buf.data () + strlen (header); | |
a76d924d DJ |
8820 | |
8821 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8822 | if (packet_format == 'X') | |
c906108c | 8823 | { |
23860348 | 8824 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8825 | todo_units = std::min (len_units, |
8826 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8827 | if (use_length) |
124e13d9 | 8828 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8829 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8830 | } |
8831 | else | |
8832 | { | |
124e13d9 | 8833 | /* Number of bytes that will fit. */ |
325fac50 PA |
8834 | todo_units |
8835 | = std::min (len_units, | |
8836 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8837 | if (use_length) |
124e13d9 | 8838 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8839 | todo_units = std::min (todo_units, |
8840 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8841 | } |
a76d924d | 8842 | |
124e13d9 | 8843 | if (todo_units <= 0) |
3de11b2e | 8844 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8845 | _("minimum packet size too small to write data")); |
802188a7 | 8846 | |
6765f3e5 DJ |
8847 | /* If we already need another packet, then try to align the end |
8848 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8849 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8850 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8851 | |
a257b5bb | 8852 | /* Append "<memaddr>". */ |
917317f4 JM |
8853 | memaddr = remote_address_masked (memaddr); |
8854 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8855 | |
a76d924d DJ |
8856 | if (use_length) |
8857 | { | |
8858 | /* Append ",". */ | |
8859 | *p++ = ','; | |
802188a7 | 8860 | |
124e13d9 | 8861 | /* Append the length and retain its location and size. It may need to be |
dda83cd7 | 8862 | adjusted once the packet body has been created. */ |
a76d924d | 8863 | plen = p; |
124e13d9 | 8864 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8865 | p += plenlen; |
8866 | } | |
a257b5bb AC |
8867 | |
8868 | /* Append ":". */ | |
917317f4 JM |
8869 | *p++ = ':'; |
8870 | *p = '\0'; | |
802188a7 | 8871 | |
a257b5bb | 8872 | /* Append the packet body. */ |
a76d924d | 8873 | if (packet_format == 'X') |
917317f4 | 8874 | { |
917317f4 JM |
8875 | /* Binary mode. Send target system values byte by byte, in |
8876 | increasing byte addresses. Only escape certain critical | |
8877 | characters. */ | |
124e13d9 SM |
8878 | payload_length_bytes = |
8879 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8880 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8881 | |
124e13d9 | 8882 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8883 | a second try to keep the end of the packet aligned. Don't do |
8884 | this if the packet is tiny. */ | |
124e13d9 | 8885 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8886 | { |
124e13d9 SM |
8887 | int new_todo_units; |
8888 | ||
8889 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8890 | ||
8891 | if (new_todo_units != units_written) | |
8892 | payload_length_bytes = | |
8893 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8894 | (gdb_byte *) p, &units_written, | |
8895 | payload_capacity_bytes); | |
6765f3e5 DJ |
8896 | } |
8897 | ||
124e13d9 SM |
8898 | p += payload_length_bytes; |
8899 | if (use_length && units_written < todo_units) | |
c906108c | 8900 | { |
802188a7 | 8901 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8902 | and we have actually sent fewer units than planned. |
917317f4 JM |
8903 | Fix-up the length field of the packet. Use the same |
8904 | number of characters as before. */ | |
124e13d9 SM |
8905 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8906 | plenlen); | |
917317f4 | 8907 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8908 | } |
a76d924d DJ |
8909 | } |
8910 | else | |
8911 | { | |
917317f4 JM |
8912 | /* Normal mode: Send target system values byte by byte, in |
8913 | increasing byte addresses. Each byte is encoded as a two hex | |
8914 | value. */ | |
124e13d9 SM |
8915 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8916 | units_written = todo_units; | |
c906108c | 8917 | } |
802188a7 | 8918 | |
8d64371b TT |
8919 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8920 | getpkt (&rs->buf, 0); | |
802188a7 | 8921 | |
2e9f7625 | 8922 | if (rs->buf[0] == 'E') |
00d84524 | 8923 | return TARGET_XFER_E_IO; |
802188a7 | 8924 | |
124e13d9 SM |
8925 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8926 | send fewer units than we'd planned. */ | |
8927 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 8928 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
8929 | } |
8930 | ||
a76d924d DJ |
8931 | /* Write memory data directly to the remote machine. |
8932 | This does not inform the data cache; the data cache uses this. | |
8933 | MEMADDR is the address in the remote memory space. | |
8934 | MYADDR is the address of the buffer in our space. | |
8935 | LEN is the number of bytes. | |
8936 | ||
9b409511 YQ |
8937 | Return the transferred status, error or OK (an |
8938 | 'enum target_xfer_status' value). Save the number of bytes | |
8939 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8940 | |
6b8edb51 PA |
8941 | target_xfer_status |
8942 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
8943 | ULONGEST len, int unit_size, | |
8944 | ULONGEST *xfered_len) | |
a76d924d | 8945 | { |
a121b7c1 | 8946 | const char *packet_format = NULL; |
a76d924d DJ |
8947 | |
8948 | /* Check whether the target supports binary download. */ | |
8949 | check_binary_download (memaddr); | |
8950 | ||
4082afcc | 8951 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8952 | { |
8953 | case PACKET_ENABLE: | |
8954 | packet_format = "X"; | |
8955 | break; | |
8956 | case PACKET_DISABLE: | |
8957 | packet_format = "M"; | |
8958 | break; | |
8959 | case PACKET_SUPPORT_UNKNOWN: | |
8960 | internal_error (__FILE__, __LINE__, | |
8961 | _("remote_write_bytes: bad internal state")); | |
8962 | default: | |
8963 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8964 | } | |
8965 | ||
8966 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8967 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8968 | packet_format[0], 1); |
a76d924d DJ |
8969 | } |
8970 | ||
9217e74e YQ |
8971 | /* Read memory data directly from the remote machine. |
8972 | This does not use the data cache; the data cache uses this. | |
8973 | MEMADDR is the address in the remote memory space. | |
8974 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8975 | LEN_UNITS is the number of addressable memory units to read.. |
8976 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8977 | |
8978 | Return the transferred status, error or OK (an | |
8979 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8980 | transferred in *XFERED_LEN_UNITS. |
8981 | ||
8982 | See the comment of remote_write_bytes_aux for an example of | |
8983 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 8984 | |
6b8edb51 PA |
8985 | target_xfer_status |
8986 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
8987 | ULONGEST len_units, | |
8988 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8989 | { |
8990 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8991 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8992 | char *p; |
124e13d9 SM |
8993 | int todo_units; |
8994 | int decoded_bytes; | |
9217e74e | 8995 | |
124e13d9 | 8996 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8997 | /* The packet buffer will be large enough for the payload; |
8998 | get_memory_packet_size ensures this. */ | |
8999 | ||
124e13d9 | 9000 | /* Number of units that will fit. */ |
325fac50 PA |
9001 | todo_units = std::min (len_units, |
9002 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
9003 | |
9004 | /* Construct "m"<memaddr>","<len>". */ | |
9005 | memaddr = remote_address_masked (memaddr); | |
8d64371b | 9006 | p = rs->buf.data (); |
9217e74e YQ |
9007 | *p++ = 'm'; |
9008 | p += hexnumstr (p, (ULONGEST) memaddr); | |
9009 | *p++ = ','; | |
124e13d9 | 9010 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
9011 | *p = '\0'; |
9012 | putpkt (rs->buf); | |
8d64371b | 9013 | getpkt (&rs->buf, 0); |
9217e74e YQ |
9014 | if (rs->buf[0] == 'E' |
9015 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
9016 | && rs->buf[3] == '\0') | |
9017 | return TARGET_XFER_E_IO; | |
9018 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
9019 | characters. */ | |
8d64371b | 9020 | p = rs->buf.data (); |
124e13d9 | 9021 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 9022 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 9023 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 9024 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
9025 | } |
9026 | ||
b55fbac4 YQ |
9027 | /* Using the set of read-only target sections of remote, read live |
9028 | read-only memory. | |
8acf9577 YQ |
9029 | |
9030 | For interface/parameters/return description see target.h, | |
9031 | to_xfer_partial. */ | |
9032 | ||
6b8edb51 PA |
9033 | target_xfer_status |
9034 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
9035 | ULONGEST memaddr, | |
9036 | ULONGEST len, | |
9037 | int unit_size, | |
9038 | ULONGEST *xfered_len) | |
8acf9577 YQ |
9039 | { |
9040 | struct target_section *secp; | |
8acf9577 | 9041 | |
6b8edb51 | 9042 | secp = target_section_by_addr (this, memaddr); |
8acf9577 | 9043 | if (secp != NULL |
fd361982 | 9044 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
8acf9577 | 9045 | { |
8acf9577 YQ |
9046 | ULONGEST memend = memaddr + len; |
9047 | ||
d7a78e5c TT |
9048 | target_section_table *table = target_get_section_table (this); |
9049 | for (target_section &p : *table) | |
8acf9577 | 9050 | { |
bb2a6777 | 9051 | if (memaddr >= p.addr) |
8acf9577 | 9052 | { |
bb2a6777 | 9053 | if (memend <= p.endaddr) |
8acf9577 YQ |
9054 | { |
9055 | /* Entire transfer is within this section. */ | |
124e13d9 | 9056 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9057 | xfered_len); |
8acf9577 | 9058 | } |
bb2a6777 | 9059 | else if (memaddr >= p.endaddr) |
8acf9577 YQ |
9060 | { |
9061 | /* This section ends before the transfer starts. */ | |
9062 | continue; | |
9063 | } | |
9064 | else | |
9065 | { | |
9066 | /* This section overlaps the transfer. Just do half. */ | |
bb2a6777 | 9067 | len = p.endaddr - memaddr; |
124e13d9 | 9068 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 9069 | xfered_len); |
8acf9577 YQ |
9070 | } |
9071 | } | |
9072 | } | |
9073 | } | |
9074 | ||
9075 | return TARGET_XFER_EOF; | |
9076 | } | |
9077 | ||
9217e74e YQ |
9078 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
9079 | first if the requested memory is unavailable in traceframe. | |
9080 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 9081 | |
6b8edb51 PA |
9082 | target_xfer_status |
9083 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
9084 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
9085 | ULONGEST *xfered_len) | |
c906108c | 9086 | { |
6b6aa828 | 9087 | if (len == 0) |
96c4f946 | 9088 | return TARGET_XFER_EOF; |
b2182ed2 | 9089 | |
8acf9577 YQ |
9090 | if (get_traceframe_number () != -1) |
9091 | { | |
a79b1bc6 | 9092 | std::vector<mem_range> available; |
8acf9577 YQ |
9093 | |
9094 | /* If we fail to get the set of available memory, then the | |
9095 | target does not support querying traceframe info, and so we | |
9096 | attempt reading from the traceframe anyway (assuming the | |
9097 | target implements the old QTro packet then). */ | |
9098 | if (traceframe_available_memory (&available, memaddr, len)) | |
9099 | { | |
a79b1bc6 | 9100 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
9101 | { |
9102 | enum target_xfer_status res; | |
9103 | ||
9104 | /* Don't read into the traceframe's available | |
9105 | memory. */ | |
a79b1bc6 | 9106 | if (!available.empty ()) |
8acf9577 YQ |
9107 | { |
9108 | LONGEST oldlen = len; | |
9109 | ||
a79b1bc6 | 9110 | len = available[0].start - memaddr; |
8acf9577 YQ |
9111 | gdb_assert (len <= oldlen); |
9112 | } | |
9113 | ||
8acf9577 | 9114 | /* This goes through the topmost target again. */ |
6b8edb51 | 9115 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 9116 | len, unit_size, xfered_len); |
8acf9577 YQ |
9117 | if (res == TARGET_XFER_OK) |
9118 | return TARGET_XFER_OK; | |
9119 | else | |
9120 | { | |
9121 | /* No use trying further, we know some memory starting | |
9122 | at MEMADDR isn't available. */ | |
9123 | *xfered_len = len; | |
92ffd475 PC |
9124 | return (*xfered_len != 0) ? |
9125 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
9126 | } |
9127 | } | |
9128 | ||
9129 | /* Don't try to read more than how much is available, in | |
9130 | case the target implements the deprecated QTro packet to | |
9131 | cater for older GDBs (the target's knowledge of read-only | |
9132 | sections may be outdated by now). */ | |
a79b1bc6 | 9133 | len = available[0].length; |
8acf9577 YQ |
9134 | } |
9135 | } | |
9136 | ||
124e13d9 | 9137 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 9138 | } |
74531fed | 9139 | |
c906108c | 9140 | \f |
c906108c | 9141 | |
a76d924d DJ |
9142 | /* Sends a packet with content determined by the printf format string |
9143 | FORMAT and the remaining arguments, then gets the reply. Returns | |
9144 | whether the packet was a success, a failure, or unknown. */ | |
9145 | ||
6b8edb51 PA |
9146 | packet_result |
9147 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
9148 | { |
9149 | struct remote_state *rs = get_remote_state (); | |
9150 | int max_size = get_remote_packet_size (); | |
a76d924d | 9151 | va_list ap; |
a744cf53 | 9152 | |
a76d924d DJ |
9153 | va_start (ap, format); |
9154 | ||
9155 | rs->buf[0] = '\0'; | |
8d64371b | 9156 | int size = vsnprintf (rs->buf.data (), max_size, format, ap); |
33b031ce GB |
9157 | |
9158 | va_end (ap); | |
9159 | ||
9160 | if (size >= max_size) | |
9b20d036 | 9161 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
9162 | |
9163 | if (putpkt (rs->buf) < 0) | |
9164 | error (_("Communication problem with target.")); | |
9165 | ||
9166 | rs->buf[0] = '\0'; | |
8d64371b | 9167 | getpkt (&rs->buf, 0); |
a76d924d DJ |
9168 | |
9169 | return packet_check_result (rs->buf); | |
9170 | } | |
9171 | ||
a76d924d DJ |
9172 | /* Flash writing can take quite some time. We'll set |
9173 | effectively infinite timeout for flash operations. | |
9174 | In future, we'll need to decide on a better approach. */ | |
9175 | static const int remote_flash_timeout = 1000; | |
9176 | ||
f6ac5f3d PA |
9177 | void |
9178 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 9179 | { |
f5656ead | 9180 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 9181 | enum packet_result ret; |
2ec845e7 TT |
9182 | scoped_restore restore_timeout |
9183 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
9184 | |
9185 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 9186 | phex (address, addr_size), |
a76d924d DJ |
9187 | phex (length, 4)); |
9188 | switch (ret) | |
9189 | { | |
9190 | case PACKET_UNKNOWN: | |
9191 | error (_("Remote target does not support flash erase")); | |
9192 | case PACKET_ERROR: | |
9193 | error (_("Error erasing flash with vFlashErase packet")); | |
9194 | default: | |
9195 | break; | |
9196 | } | |
a76d924d DJ |
9197 | } |
9198 | ||
6b8edb51 PA |
9199 | target_xfer_status |
9200 | remote_target::remote_flash_write (ULONGEST address, | |
9201 | ULONGEST length, ULONGEST *xfered_len, | |
9202 | const gdb_byte *data) | |
a76d924d | 9203 | { |
2ec845e7 TT |
9204 | scoped_restore restore_timeout |
9205 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9206 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
9207 | xfered_len,'X', 0); | |
a76d924d DJ |
9208 | } |
9209 | ||
f6ac5f3d PA |
9210 | void |
9211 | remote_target::flash_done () | |
a76d924d | 9212 | { |
a76d924d | 9213 | int ret; |
a76d924d | 9214 | |
2ec845e7 TT |
9215 | scoped_restore restore_timeout |
9216 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
9217 | ||
a76d924d | 9218 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
9219 | |
9220 | switch (ret) | |
9221 | { | |
9222 | case PACKET_UNKNOWN: | |
9223 | error (_("Remote target does not support vFlashDone")); | |
9224 | case PACKET_ERROR: | |
9225 | error (_("Error finishing flash operation")); | |
9226 | default: | |
9227 | break; | |
9228 | } | |
9229 | } | |
9230 | ||
f6ac5f3d PA |
9231 | void |
9232 | remote_target::files_info () | |
c906108c SS |
9233 | { |
9234 | puts_filtered ("Debugging a target over a serial line.\n"); | |
9235 | } | |
9236 | \f | |
9237 | /* Stuff for dealing with the packets which are part of this protocol. | |
9238 | See comment at top of file for details. */ | |
9239 | ||
1927e618 PA |
9240 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
9241 | error to higher layers. Called when a serial error is detected. | |
9242 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
9243 | the system error message for errno at function entry and final dot |
9244 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
9245 | |
9246 | static void | |
5b6d1e4f | 9247 | unpush_and_perror (remote_target *target, const char *string) |
1927e618 | 9248 | { |
d6cb50a2 | 9249 | int saved_errno = errno; |
1927e618 | 9250 | |
5b6d1e4f | 9251 | remote_unpush_target (target); |
d6cb50a2 JK |
9252 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
9253 | safe_strerror (saved_errno)); | |
1927e618 PA |
9254 | } |
9255 | ||
048094ac PA |
9256 | /* Read a single character from the remote end. The current quit |
9257 | handler is overridden to avoid quitting in the middle of packet | |
9258 | sequence, as that would break communication with the remote server. | |
9259 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 9260 | |
6b8edb51 PA |
9261 | int |
9262 | remote_target::readchar (int timeout) | |
c906108c SS |
9263 | { |
9264 | int ch; | |
5d93a237 | 9265 | struct remote_state *rs = get_remote_state (); |
048094ac | 9266 | |
2ec845e7 | 9267 | { |
6b8edb51 PA |
9268 | scoped_restore restore_quit_target |
9269 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9270 | scoped_restore restore_quit |
6b8edb51 | 9271 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 9272 | |
2ec845e7 | 9273 | rs->got_ctrlc_during_io = 0; |
c906108c | 9274 | |
2ec845e7 | 9275 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 9276 | |
2ec845e7 TT |
9277 | if (rs->got_ctrlc_during_io) |
9278 | set_quit_flag (); | |
9279 | } | |
048094ac | 9280 | |
2acceee2 | 9281 | if (ch >= 0) |
0876f84a | 9282 | return ch; |
2acceee2 JM |
9283 | |
9284 | switch ((enum serial_rc) ch) | |
c906108c SS |
9285 | { |
9286 | case SERIAL_EOF: | |
5b6d1e4f | 9287 | remote_unpush_target (this); |
598d3636 | 9288 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 9289 | /* no return */ |
c906108c | 9290 | case SERIAL_ERROR: |
5b6d1e4f PA |
9291 | unpush_and_perror (this, _("Remote communication error. " |
9292 | "Target disconnected.")); | |
2acceee2 | 9293 | /* no return */ |
c906108c | 9294 | case SERIAL_TIMEOUT: |
2acceee2 | 9295 | break; |
c906108c | 9296 | } |
2acceee2 | 9297 | return ch; |
c906108c SS |
9298 | } |
9299 | ||
c33e31fd | 9300 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9301 | writing fails. The current quit handler is overridden to avoid |
9302 | quitting in the middle of packet sequence, as that would break | |
9303 | communication with the remote server. See | |
9304 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9305 | |
6b8edb51 PA |
9306 | void |
9307 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9308 | { |
5d93a237 | 9309 | struct remote_state *rs = get_remote_state (); |
048094ac | 9310 | |
6b8edb51 PA |
9311 | scoped_restore restore_quit_target |
9312 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9313 | scoped_restore restore_quit |
6b8edb51 | 9314 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9315 | |
9316 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9317 | |
9318 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9319 | { |
5b6d1e4f PA |
9320 | unpush_and_perror (this, _("Remote communication error. " |
9321 | "Target disconnected.")); | |
c33e31fd | 9322 | } |
048094ac PA |
9323 | |
9324 | if (rs->got_ctrlc_during_io) | |
9325 | set_quit_flag (); | |
c33e31fd PA |
9326 | } |
9327 | ||
b3ced9ba PA |
9328 | /* Return a string representing an escaped version of BUF, of len N. |
9329 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9330 | |
b3ced9ba | 9331 | static std::string |
6e5abd65 PA |
9332 | escape_buffer (const char *buf, int n) |
9333 | { | |
d7e74731 | 9334 | string_file stb; |
6e5abd65 | 9335 | |
d7e74731 PA |
9336 | stb.putstrn (buf, n, '\\'); |
9337 | return std::move (stb.string ()); | |
6e5abd65 PA |
9338 | } |
9339 | ||
c906108c SS |
9340 | /* Display a null-terminated packet on stdout, for debugging, using C |
9341 | string notation. */ | |
9342 | ||
9343 | static void | |
baa336ce | 9344 | print_packet (const char *buf) |
c906108c SS |
9345 | { |
9346 | puts_filtered ("\""); | |
43e526b9 | 9347 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
9348 | puts_filtered ("\""); |
9349 | } | |
9350 | ||
9351 | int | |
6b8edb51 | 9352 | remote_target::putpkt (const char *buf) |
c906108c SS |
9353 | { |
9354 | return putpkt_binary (buf, strlen (buf)); | |
9355 | } | |
9356 | ||
6b8edb51 PA |
9357 | /* Wrapper around remote_target::putpkt to avoid exporting |
9358 | remote_target. */ | |
9359 | ||
9360 | int | |
9361 | putpkt (remote_target *remote, const char *buf) | |
9362 | { | |
9363 | return remote->putpkt (buf); | |
9364 | } | |
9365 | ||
c906108c | 9366 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9367 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9368 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9369 | and for a possible /0 if we are debugging (remote_debug) and want |
9370 | to print the sent packet as a string. */ | |
c906108c | 9371 | |
6b8edb51 PA |
9372 | int |
9373 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9374 | { |
2d717e4f | 9375 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9376 | int i; |
9377 | unsigned char csum = 0; | |
b80406ac TT |
9378 | gdb::def_vector<char> data (cnt + 6); |
9379 | char *buf2 = data.data (); | |
085dd6e6 | 9380 | |
c906108c SS |
9381 | int ch; |
9382 | int tcount = 0; | |
9383 | char *p; | |
9384 | ||
e24a49d8 PA |
9385 | /* Catch cases like trying to read memory or listing threads while |
9386 | we're waiting for a stop reply. The remote server wouldn't be | |
9387 | ready to handle this request, so we'd hang and timeout. We don't | |
9388 | have to worry about this in synchronous mode, because in that | |
9389 | case it's not possible to issue a command while the target is | |
74531fed PA |
9390 | running. This is not a problem in non-stop mode, because in that |
9391 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9392 | if (!target_is_non_stop_p () |
9393 | && target_is_async_p () | |
9394 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9395 | { |
9396 | error (_("Cannot execute this command while the target is running.\n" | |
9397 | "Use the \"interrupt\" command to stop the target\n" | |
9398 | "and then try again.")); | |
9399 | } | |
e24a49d8 | 9400 | |
2d717e4f DJ |
9401 | /* We're sending out a new packet. Make sure we don't look at a |
9402 | stale cached response. */ | |
9403 | rs->cached_wait_status = 0; | |
9404 | ||
c906108c SS |
9405 | /* Copy the packet into buffer BUF2, encapsulating it |
9406 | and giving it a checksum. */ | |
9407 | ||
c906108c SS |
9408 | p = buf2; |
9409 | *p++ = '$'; | |
9410 | ||
9411 | for (i = 0; i < cnt; i++) | |
9412 | { | |
9413 | csum += buf[i]; | |
9414 | *p++ = buf[i]; | |
9415 | } | |
9416 | *p++ = '#'; | |
9417 | *p++ = tohex ((csum >> 4) & 0xf); | |
9418 | *p++ = tohex (csum & 0xf); | |
9419 | ||
9420 | /* Send it over and over until we get a positive ack. */ | |
9421 | ||
9422 | while (1) | |
9423 | { | |
9424 | int started_error_output = 0; | |
9425 | ||
9426 | if (remote_debug) | |
9427 | { | |
9428 | *p = '\0'; | |
b3ced9ba | 9429 | |
6f8976bf | 9430 | int len = (int) (p - buf2); |
6cc8564b LM |
9431 | int max_chars; |
9432 | ||
9433 | if (remote_packet_max_chars < 0) | |
9434 | max_chars = len; | |
9435 | else | |
9436 | max_chars = remote_packet_max_chars; | |
6f8976bf YQ |
9437 | |
9438 | std::string str | |
6cc8564b | 9439 | = escape_buffer (buf2, std::min (len, max_chars)); |
6f8976bf YQ |
9440 | |
9441 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
9442 | ||
6cc8564b | 9443 | if (len > max_chars) |
567a3e54 | 9444 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", |
6cc8564b | 9445 | len - max_chars); |
6f8976bf YQ |
9446 | |
9447 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 9448 | |
0f71a2f6 | 9449 | gdb_flush (gdb_stdlog); |
c906108c | 9450 | } |
c33e31fd | 9451 | remote_serial_write (buf2, p - buf2); |
c906108c | 9452 | |
a6f3e723 SL |
9453 | /* If this is a no acks version of the remote protocol, send the |
9454 | packet and move on. */ | |
9455 | if (rs->noack_mode) | |
dda83cd7 | 9456 | break; |
a6f3e723 | 9457 | |
74531fed PA |
9458 | /* Read until either a timeout occurs (-2) or '+' is read. |
9459 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9460 | while (1) |
9461 | { | |
9462 | ch = readchar (remote_timeout); | |
9463 | ||
c5aa993b | 9464 | if (remote_debug) |
c906108c SS |
9465 | { |
9466 | switch (ch) | |
9467 | { | |
9468 | case '+': | |
1216fa2c | 9469 | case '-': |
c906108c SS |
9470 | case SERIAL_TIMEOUT: |
9471 | case '$': | |
74531fed | 9472 | case '%': |
c906108c SS |
9473 | if (started_error_output) |
9474 | { | |
9475 | putchar_unfiltered ('\n'); | |
9476 | started_error_output = 0; | |
9477 | } | |
9478 | } | |
9479 | } | |
9480 | ||
9481 | switch (ch) | |
9482 | { | |
9483 | case '+': | |
9484 | if (remote_debug) | |
0f71a2f6 | 9485 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 9486 | return 1; |
1216fa2c AC |
9487 | case '-': |
9488 | if (remote_debug) | |
9489 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 9490 | /* FALLTHROUGH */ |
c906108c | 9491 | case SERIAL_TIMEOUT: |
c5aa993b | 9492 | tcount++; |
c906108c | 9493 | if (tcount > 3) |
b80406ac | 9494 | return 0; |
23860348 | 9495 | break; /* Retransmit buffer. */ |
c906108c SS |
9496 | case '$': |
9497 | { | |
dda83cd7 | 9498 | if (remote_debug) |
2bc416ba | 9499 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 9500 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
9501 | /* It's probably an old response sent because an ACK |
9502 | was lost. Gobble up the packet and ack it so it | |
9503 | doesn't get retransmitted when we resend this | |
9504 | packet. */ | |
6d820c5c | 9505 | skip_frame (); |
c33e31fd | 9506 | remote_serial_write ("+", 1); |
23860348 | 9507 | continue; /* Now, go look for +. */ |
c906108c | 9508 | } |
74531fed PA |
9509 | |
9510 | case '%': | |
9511 | { | |
9512 | int val; | |
9513 | ||
9514 | /* If we got a notification, handle it, and go back to looking | |
9515 | for an ack. */ | |
9516 | /* We've found the start of a notification. Now | |
9517 | collect the data. */ | |
8d64371b | 9518 | val = read_frame (&rs->buf); |
74531fed PA |
9519 | if (val >= 0) |
9520 | { | |
9521 | if (remote_debug) | |
9522 | { | |
8d64371b | 9523 | std::string str = escape_buffer (rs->buf.data (), val); |
6e5abd65 | 9524 | |
6e5abd65 PA |
9525 | fprintf_unfiltered (gdb_stdlog, |
9526 | " Notification received: %s\n", | |
b3ced9ba | 9527 | str.c_str ()); |
74531fed | 9528 | } |
8d64371b | 9529 | handle_notification (rs->notif_state, rs->buf.data ()); |
74531fed PA |
9530 | /* We're in sync now, rewait for the ack. */ |
9531 | tcount = 0; | |
9532 | } | |
9533 | else | |
9534 | { | |
9535 | if (remote_debug) | |
9536 | { | |
9537 | if (!started_error_output) | |
9538 | { | |
9539 | started_error_output = 1; | |
9540 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
9541 | } | |
9542 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8d64371b | 9543 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf.data ()); |
74531fed PA |
9544 | } |
9545 | } | |
9546 | continue; | |
9547 | } | |
9548 | /* fall-through */ | |
c906108c SS |
9549 | default: |
9550 | if (remote_debug) | |
9551 | { | |
9552 | if (!started_error_output) | |
9553 | { | |
9554 | started_error_output = 1; | |
0f71a2f6 | 9555 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 9556 | } |
0f71a2f6 | 9557 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
9558 | } |
9559 | continue; | |
9560 | } | |
23860348 | 9561 | break; /* Here to retransmit. */ |
c906108c SS |
9562 | } |
9563 | ||
9564 | #if 0 | |
9565 | /* This is wrong. If doing a long backtrace, the user should be | |
dda83cd7 SM |
9566 | able to get out next time we call QUIT, without anything as |
9567 | violent as interrupt_query. If we want to provide a way out of | |
9568 | here without getting to the next QUIT, it should be based on | |
9569 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9570 | if (quit_flag) |
9571 | { | |
9572 | quit_flag = 0; | |
9573 | interrupt_query (); | |
9574 | } | |
9575 | #endif | |
9576 | } | |
a5c0808e | 9577 | |
a6f3e723 | 9578 | return 0; |
c906108c SS |
9579 | } |
9580 | ||
6d820c5c DJ |
9581 | /* Come here after finding the start of a frame when we expected an |
9582 | ack. Do our best to discard the rest of this packet. */ | |
9583 | ||
6b8edb51 PA |
9584 | void |
9585 | remote_target::skip_frame () | |
6d820c5c DJ |
9586 | { |
9587 | int c; | |
9588 | ||
9589 | while (1) | |
9590 | { | |
9591 | c = readchar (remote_timeout); | |
9592 | switch (c) | |
9593 | { | |
9594 | case SERIAL_TIMEOUT: | |
9595 | /* Nothing we can do. */ | |
9596 | return; | |
9597 | case '#': | |
9598 | /* Discard the two bytes of checksum and stop. */ | |
9599 | c = readchar (remote_timeout); | |
9600 | if (c >= 0) | |
9601 | c = readchar (remote_timeout); | |
9602 | ||
9603 | return; | |
9604 | case '*': /* Run length encoding. */ | |
9605 | /* Discard the repeat count. */ | |
9606 | c = readchar (remote_timeout); | |
9607 | if (c < 0) | |
9608 | return; | |
9609 | break; | |
9610 | default: | |
9611 | /* A regular character. */ | |
9612 | break; | |
9613 | } | |
9614 | } | |
9615 | } | |
9616 | ||
c906108c | 9617 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9618 | into *BUF, verifying the checksum, length, and handling run-length |
9619 | compression. NUL terminate the buffer. If there is not enough room, | |
8d64371b | 9620 | expand *BUF. |
c906108c | 9621 | |
c2d11a7d JM |
9622 | Returns -1 on error, number of characters in buffer (ignoring the |
9623 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9624 | SERIAL status indications). */ |
c2d11a7d | 9625 | |
6b8edb51 | 9626 | long |
8d64371b | 9627 | remote_target::read_frame (gdb::char_vector *buf_p) |
c906108c SS |
9628 | { |
9629 | unsigned char csum; | |
c2d11a7d | 9630 | long bc; |
c906108c | 9631 | int c; |
8d64371b | 9632 | char *buf = buf_p->data (); |
a6f3e723 | 9633 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9634 | |
9635 | csum = 0; | |
c2d11a7d | 9636 | bc = 0; |
c906108c SS |
9637 | |
9638 | while (1) | |
9639 | { | |
9640 | c = readchar (remote_timeout); | |
c906108c SS |
9641 | switch (c) |
9642 | { | |
9643 | case SERIAL_TIMEOUT: | |
9644 | if (remote_debug) | |
0f71a2f6 | 9645 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 9646 | return -1; |
c906108c SS |
9647 | case '$': |
9648 | if (remote_debug) | |
0f71a2f6 JM |
9649 | fputs_filtered ("Saw new packet start in middle of old one\n", |
9650 | gdb_stdlog); | |
23860348 | 9651 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
9652 | case '#': |
9653 | { | |
9654 | unsigned char pktcsum; | |
e1b09194 AC |
9655 | int check_0 = 0; |
9656 | int check_1 = 0; | |
c906108c | 9657 | |
c2d11a7d | 9658 | buf[bc] = '\0'; |
c906108c | 9659 | |
e1b09194 AC |
9660 | check_0 = readchar (remote_timeout); |
9661 | if (check_0 >= 0) | |
9662 | check_1 = readchar (remote_timeout); | |
802188a7 | 9663 | |
e1b09194 AC |
9664 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9665 | { | |
9666 | if (remote_debug) | |
2bc416ba | 9667 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 9668 | gdb_stdlog); |
e1b09194 AC |
9669 | return -1; |
9670 | } | |
9671 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
9672 | { |
9673 | if (remote_debug) | |
2bc416ba | 9674 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 9675 | gdb_stdlog); |
40e3f985 FN |
9676 | return -1; |
9677 | } | |
c906108c | 9678 | |
a6f3e723 SL |
9679 | /* Don't recompute the checksum; with no ack packets we |
9680 | don't have any way to indicate a packet retransmission | |
9681 | is necessary. */ | |
9682 | if (rs->noack_mode) | |
9683 | return bc; | |
9684 | ||
e1b09194 | 9685 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9686 | if (csum == pktcsum) |
dda83cd7 | 9687 | return bc; |
c906108c | 9688 | |
c5aa993b | 9689 | if (remote_debug) |
c906108c | 9690 | { |
b3ced9ba | 9691 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 9692 | |
6e5abd65 | 9693 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
9694 | "Bad checksum, sentsum=0x%x, " |
9695 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 9696 | pktcsum, csum, str.c_str ()); |
c906108c | 9697 | } |
c2d11a7d | 9698 | /* Number of characters in buffer ignoring trailing |
dda83cd7 | 9699 | NULL. */ |
c2d11a7d | 9700 | return -1; |
c906108c | 9701 | } |
23860348 | 9702 | case '*': /* Run length encoding. */ |
dda83cd7 | 9703 | { |
c2c6d25f | 9704 | int repeat; |
c906108c | 9705 | |
a744cf53 | 9706 | csum += c; |
b4501125 AC |
9707 | c = readchar (remote_timeout); |
9708 | csum += c; | |
23860348 | 9709 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9710 | |
23860348 | 9711 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9712 | |
6d820c5c | 9713 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9714 | { |
8d64371b | 9715 | if (bc + repeat - 1 >= buf_p->size () - 1) |
6d820c5c DJ |
9716 | { |
9717 | /* Make some more room in the buffer. */ | |
8d64371b TT |
9718 | buf_p->resize (buf_p->size () + repeat); |
9719 | buf = buf_p->data (); | |
6d820c5c DJ |
9720 | } |
9721 | ||
c2d11a7d JM |
9722 | memset (&buf[bc], buf[bc - 1], repeat); |
9723 | bc += repeat; | |
c2c6d25f JM |
9724 | continue; |
9725 | } | |
9726 | ||
c2d11a7d | 9727 | buf[bc] = '\0'; |
6d820c5c | 9728 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9729 | return -1; |
c2c6d25f | 9730 | } |
c906108c | 9731 | default: |
8d64371b | 9732 | if (bc >= buf_p->size () - 1) |
c906108c | 9733 | { |
6d820c5c | 9734 | /* Make some more room in the buffer. */ |
8d64371b TT |
9735 | buf_p->resize (buf_p->size () * 2); |
9736 | buf = buf_p->data (); | |
c906108c SS |
9737 | } |
9738 | ||
6d820c5c DJ |
9739 | buf[bc++] = c; |
9740 | csum += c; | |
9741 | continue; | |
c906108c SS |
9742 | } |
9743 | } | |
9744 | } | |
9745 | ||
ed2b7c17 TT |
9746 | /* Set this to the maximum number of seconds to wait instead of waiting forever |
9747 | in target_wait(). If this timer times out, then it generates an error and | |
9748 | the command is aborted. This replaces most of the need for timeouts in the | |
9749 | GDB test suite, and makes it possible to distinguish between a hung target | |
9750 | and one with slow communications. */ | |
9751 | ||
9752 | static int watchdog = 0; | |
9753 | static void | |
9754 | show_watchdog (struct ui_file *file, int from_tty, | |
9755 | struct cmd_list_element *c, const char *value) | |
9756 | { | |
9757 | fprintf_filtered (file, _("Watchdog timer is %s.\n"), value); | |
9758 | } | |
9759 | ||
c906108c | 9760 | /* Read a packet from the remote machine, with error checking, and |
8d64371b TT |
9761 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9762 | FOREVER, wait forever rather than timing out; this is used (in | |
9763 | synchronous mode) to wait for a target that is is executing user | |
9764 | code to stop. */ | |
d9fcf2fb JM |
9765 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9766 | don't have to change all the calls to getpkt to deal with the | |
9767 | return value, because at the moment I don't know what the right | |
23860348 | 9768 | thing to do it for those. */ |
6b8edb51 | 9769 | |
c906108c | 9770 | void |
8d64371b | 9771 | remote_target::getpkt (gdb::char_vector *buf, int forever) |
d9fcf2fb | 9772 | { |
8d64371b | 9773 | getpkt_sane (buf, forever); |
d9fcf2fb JM |
9774 | } |
9775 | ||
9776 | ||
9777 | /* Read a packet from the remote machine, with error checking, and | |
8d64371b TT |
9778 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9779 | FOREVER, wait forever rather than timing out; this is used (in | |
9780 | synchronous mode) to wait for a target that is is executing user | |
9781 | code to stop. If FOREVER == 0, this function is allowed to time | |
9782 | out gracefully and return an indication of this to the caller. | |
9783 | Otherwise return the number of bytes read. If EXPECTING_NOTIF, | |
9784 | consider receiving a notification enough reason to return to the | |
9785 | caller. *IS_NOTIF is an output boolean that indicates whether *BUF | |
9786 | holds a notification or not (a regular packet). */ | |
74531fed | 9787 | |
6b8edb51 | 9788 | int |
8d64371b | 9789 | remote_target::getpkt_or_notif_sane_1 (gdb::char_vector *buf, |
6b8edb51 PA |
9790 | int forever, int expecting_notif, |
9791 | int *is_notif) | |
c906108c | 9792 | { |
2d717e4f | 9793 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9794 | int c; |
9795 | int tries; | |
9796 | int timeout; | |
df4b58fe | 9797 | int val = -1; |
c906108c | 9798 | |
2d717e4f DJ |
9799 | /* We're reading a new response. Make sure we don't look at a |
9800 | previously cached response. */ | |
9801 | rs->cached_wait_status = 0; | |
9802 | ||
8d64371b | 9803 | strcpy (buf->data (), "timeout"); |
c906108c SS |
9804 | |
9805 | if (forever) | |
74531fed PA |
9806 | timeout = watchdog > 0 ? watchdog : -1; |
9807 | else if (expecting_notif) | |
9808 | timeout = 0; /* There should already be a char in the buffer. If | |
9809 | not, bail out. */ | |
c906108c SS |
9810 | else |
9811 | timeout = remote_timeout; | |
9812 | ||
9813 | #define MAX_TRIES 3 | |
9814 | ||
74531fed PA |
9815 | /* Process any number of notifications, and then return when |
9816 | we get a packet. */ | |
9817 | for (;;) | |
c906108c | 9818 | { |
d9c43928 | 9819 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9820 | times. */ |
9821 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9822 | { |
74531fed PA |
9823 | /* This can loop forever if the remote side sends us |
9824 | characters continuously, but if it pauses, we'll get | |
9825 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9826 | we'll count that as a retry. | |
9827 | ||
9828 | Note that even when forever is set, we will only wait | |
9829 | forever prior to the start of a packet. After that, we | |
9830 | expect characters to arrive at a brisk pace. They should | |
9831 | show up within remote_timeout intervals. */ | |
9832 | do | |
9833 | c = readchar (timeout); | |
9834 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9835 | |
9836 | if (c == SERIAL_TIMEOUT) | |
9837 | { | |
74531fed PA |
9838 | if (expecting_notif) |
9839 | return -1; /* Don't complain, it's normal to not get | |
9840 | anything in this case. */ | |
9841 | ||
23860348 | 9842 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9843 | { |
5b6d1e4f | 9844 | remote_unpush_target (this); |
598d3636 JK |
9845 | throw_error (TARGET_CLOSE_ERROR, |
9846 | _("Watchdog timeout has expired. " | |
9847 | "Target detached.")); | |
c906108c | 9848 | } |
c906108c | 9849 | if (remote_debug) |
0f71a2f6 | 9850 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9851 | } |
74531fed PA |
9852 | else |
9853 | { | |
9854 | /* We've found the start of a packet or notification. | |
9855 | Now collect the data. */ | |
8d64371b | 9856 | val = read_frame (buf); |
74531fed PA |
9857 | if (val >= 0) |
9858 | break; | |
9859 | } | |
9860 | ||
c33e31fd | 9861 | remote_serial_write ("-", 1); |
c906108c | 9862 | } |
c906108c | 9863 | |
74531fed PA |
9864 | if (tries > MAX_TRIES) |
9865 | { | |
9866 | /* We have tried hard enough, and just can't receive the | |
9867 | packet/notification. Give up. */ | |
9868 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9869 | |
74531fed PA |
9870 | /* Skip the ack char if we're in no-ack mode. */ |
9871 | if (!rs->noack_mode) | |
c33e31fd | 9872 | remote_serial_write ("+", 1); |
74531fed PA |
9873 | return -1; |
9874 | } | |
c906108c | 9875 | |
74531fed PA |
9876 | /* If we got an ordinary packet, return that to our caller. */ |
9877 | if (c == '$') | |
c906108c SS |
9878 | { |
9879 | if (remote_debug) | |
43e526b9 | 9880 | { |
6cc8564b LM |
9881 | int max_chars; |
9882 | ||
9883 | if (remote_packet_max_chars < 0) | |
9884 | max_chars = val; | |
9885 | else | |
9886 | max_chars = remote_packet_max_chars; | |
9887 | ||
6f8976bf | 9888 | std::string str |
8d64371b | 9889 | = escape_buffer (buf->data (), |
6cc8564b | 9890 | std::min (val, max_chars)); |
6f8976bf YQ |
9891 | |
9892 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9893 | str.c_str ()); | |
9894 | ||
6cc8564b | 9895 | if (val > max_chars) |
567a3e54 | 9896 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", |
6cc8564b | 9897 | val - max_chars); |
6e5abd65 | 9898 | |
6f8976bf | 9899 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9900 | } |
a6f3e723 SL |
9901 | |
9902 | /* Skip the ack char if we're in no-ack mode. */ | |
9903 | if (!rs->noack_mode) | |
c33e31fd | 9904 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9905 | if (is_notif != NULL) |
9906 | *is_notif = 0; | |
0876f84a | 9907 | return val; |
c906108c SS |
9908 | } |
9909 | ||
74531fed PA |
9910 | /* If we got a notification, handle it, and go back to looking |
9911 | for a packet. */ | |
9912 | else | |
9913 | { | |
9914 | gdb_assert (c == '%'); | |
9915 | ||
9916 | if (remote_debug) | |
9917 | { | |
8d64371b | 9918 | std::string str = escape_buffer (buf->data (), val); |
6e5abd65 | 9919 | |
6e5abd65 PA |
9920 | fprintf_unfiltered (gdb_stdlog, |
9921 | " Notification received: %s\n", | |
b3ced9ba | 9922 | str.c_str ()); |
74531fed | 9923 | } |
fee9eda9 YQ |
9924 | if (is_notif != NULL) |
9925 | *is_notif = 1; | |
c906108c | 9926 | |
8d64371b | 9927 | handle_notification (rs->notif_state, buf->data ()); |
c906108c | 9928 | |
74531fed | 9929 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9930 | |
74531fed | 9931 | if (expecting_notif) |
fee9eda9 | 9932 | return val; |
74531fed PA |
9933 | } |
9934 | } | |
9935 | } | |
9936 | ||
6b8edb51 | 9937 | int |
8d64371b | 9938 | remote_target::getpkt_sane (gdb::char_vector *buf, int forever) |
74531fed | 9939 | { |
8d64371b | 9940 | return getpkt_or_notif_sane_1 (buf, forever, 0, NULL); |
74531fed PA |
9941 | } |
9942 | ||
6b8edb51 | 9943 | int |
8d64371b | 9944 | remote_target::getpkt_or_notif_sane (gdb::char_vector *buf, int forever, |
6b8edb51 | 9945 | int *is_notif) |
74531fed | 9946 | { |
8d64371b | 9947 | return getpkt_or_notif_sane_1 (buf, forever, 1, is_notif); |
c906108c | 9948 | } |
74531fed | 9949 | |
cbb8991c DB |
9950 | /* Kill any new fork children of process PID that haven't been |
9951 | processed by follow_fork. */ | |
9952 | ||
6b8edb51 PA |
9953 | void |
9954 | remote_target::kill_new_fork_children (int pid) | |
cbb8991c | 9955 | { |
6b8edb51 | 9956 | remote_state *rs = get_remote_state (); |
cbb8991c | 9957 | struct notif_client *notif = ¬if_client_stop; |
cbb8991c DB |
9958 | |
9959 | /* Kill the fork child threads of any threads in process PID | |
9960 | that are stopped at a fork event. */ | |
5b6d1e4f | 9961 | for (thread_info *thread : all_non_exited_threads (this)) |
cbb8991c DB |
9962 | { |
9963 | struct target_waitstatus *ws = &thread->pending_follow; | |
9964 | ||
9965 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9966 | { | |
953edf2b | 9967 | int child_pid = ws->value.related_pid.pid (); |
cbb8991c DB |
9968 | int res; |
9969 | ||
6b8edb51 | 9970 | res = remote_vkill (child_pid); |
cbb8991c DB |
9971 | if (res != 0) |
9972 | error (_("Can't kill fork child process %d"), child_pid); | |
9973 | } | |
9974 | } | |
9975 | ||
9976 | /* Check for any pending fork events (not reported or processed yet) | |
9977 | in process PID and kill those fork child threads as well. */ | |
9978 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
9979 | for (auto &event : rs->stop_reply_queue) |
9980 | if (is_pending_fork_parent (&event->ws, pid, event->ptid)) | |
9981 | { | |
9982 | int child_pid = event->ws.value.related_pid.pid (); | |
9983 | int res; | |
9984 | ||
9985 | res = remote_vkill (child_pid); | |
9986 | if (res != 0) | |
9987 | error (_("Can't kill fork child process %d"), child_pid); | |
9988 | } | |
cbb8991c DB |
9989 | } |
9990 | ||
c906108c | 9991 | \f |
8020350c DB |
9992 | /* Target hook to kill the current inferior. */ |
9993 | ||
f6ac5f3d PA |
9994 | void |
9995 | remote_target::kill () | |
43ff13b4 | 9996 | { |
8020350c | 9997 | int res = -1; |
e99b03dc | 9998 | int pid = inferior_ptid.pid (); |
8020350c | 9999 | struct remote_state *rs = get_remote_state (); |
0fdf84ca | 10000 | |
8020350c | 10001 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 10002 | { |
8020350c DB |
10003 | /* If we're stopped while forking and we haven't followed yet, |
10004 | kill the child task. We need to do this before killing the | |
10005 | parent task because if this is a vfork then the parent will | |
10006 | be sleeping. */ | |
6b8edb51 | 10007 | kill_new_fork_children (pid); |
8020350c | 10008 | |
6b8edb51 | 10009 | res = remote_vkill (pid); |
8020350c | 10010 | if (res == 0) |
0fdf84ca | 10011 | { |
bc1e6c81 | 10012 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
10013 | return; |
10014 | } | |
8020350c | 10015 | } |
0fdf84ca | 10016 | |
8020350c DB |
10017 | /* If we are in 'target remote' mode and we are killing the only |
10018 | inferior, then we will tell gdbserver to exit and unpush the | |
10019 | target. */ | |
10020 | if (res == -1 && !remote_multi_process_p (rs) | |
5b6d1e4f | 10021 | && number_of_live_inferiors (this) == 1) |
8020350c DB |
10022 | { |
10023 | remote_kill_k (); | |
10024 | ||
10025 | /* We've killed the remote end, we get to mourn it. If we are | |
10026 | not in extended mode, mourning the inferior also unpushes | |
10027 | remote_ops from the target stack, which closes the remote | |
10028 | connection. */ | |
bc1e6c81 | 10029 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
10030 | |
10031 | return; | |
0fdf84ca | 10032 | } |
43ff13b4 | 10033 | |
8020350c | 10034 | error (_("Can't kill process")); |
43ff13b4 JM |
10035 | } |
10036 | ||
8020350c DB |
10037 | /* Send a kill request to the target using the 'vKill' packet. */ |
10038 | ||
6b8edb51 PA |
10039 | int |
10040 | remote_target::remote_vkill (int pid) | |
82f73884 | 10041 | { |
4082afcc | 10042 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
10043 | return -1; |
10044 | ||
6b8edb51 PA |
10045 | remote_state *rs = get_remote_state (); |
10046 | ||
82f73884 | 10047 | /* Tell the remote target to detach. */ |
8d64371b | 10048 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vKill;%x", pid); |
82f73884 | 10049 | putpkt (rs->buf); |
8d64371b | 10050 | getpkt (&rs->buf, 0); |
82f73884 | 10051 | |
4082afcc PA |
10052 | switch (packet_ok (rs->buf, |
10053 | &remote_protocol_packets[PACKET_vKill])) | |
10054 | { | |
10055 | case PACKET_OK: | |
10056 | return 0; | |
10057 | case PACKET_ERROR: | |
10058 | return 1; | |
10059 | case PACKET_UNKNOWN: | |
10060 | return -1; | |
10061 | default: | |
10062 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
10063 | } | |
82f73884 PA |
10064 | } |
10065 | ||
8020350c DB |
10066 | /* Send a kill request to the target using the 'k' packet. */ |
10067 | ||
6b8edb51 PA |
10068 | void |
10069 | remote_target::remote_kill_k () | |
82f73884 | 10070 | { |
8020350c DB |
10071 | /* Catch errors so the user can quit from gdb even when we |
10072 | aren't on speaking terms with the remote system. */ | |
a70b8144 | 10073 | try |
82f73884 | 10074 | { |
82f73884 | 10075 | putpkt ("k"); |
82f73884 | 10076 | } |
230d2906 | 10077 | catch (const gdb_exception_error &ex) |
8020350c DB |
10078 | { |
10079 | if (ex.error == TARGET_CLOSE_ERROR) | |
10080 | { | |
10081 | /* If we got an (EOF) error that caused the target | |
10082 | to go away, then we're done, that's what we wanted. | |
10083 | "k" is susceptible to cause a premature EOF, given | |
10084 | that the remote server isn't actually required to | |
10085 | reply to "k", and it can happen that it doesn't | |
10086 | even get to reply ACK to the "k". */ | |
10087 | return; | |
10088 | } | |
82f73884 | 10089 | |
8020350c DB |
10090 | /* Otherwise, something went wrong. We didn't actually kill |
10091 | the target. Just propagate the exception, and let the | |
10092 | user or higher layers decide what to do. */ | |
eedc3f4f | 10093 | throw; |
8020350c | 10094 | } |
82f73884 PA |
10095 | } |
10096 | ||
f6ac5f3d PA |
10097 | void |
10098 | remote_target::mourn_inferior () | |
c906108c | 10099 | { |
8020350c | 10100 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 10101 | |
9607784a PA |
10102 | /* We're no longer interested in notification events of an inferior |
10103 | that exited or was killed/detached. */ | |
10104 | discard_pending_stop_replies (current_inferior ()); | |
10105 | ||
8020350c | 10106 | /* In 'target remote' mode with one inferior, we close the connection. */ |
5b6d1e4f | 10107 | if (!rs->extended && number_of_live_inferiors (this) <= 1) |
8020350c | 10108 | { |
5b6d1e4f | 10109 | remote_unpush_target (this); |
8020350c DB |
10110 | return; |
10111 | } | |
c906108c | 10112 | |
e24a49d8 PA |
10113 | /* In case we got here due to an error, but we're going to stay |
10114 | connected. */ | |
10115 | rs->waiting_for_stop_reply = 0; | |
10116 | ||
dc1981d7 PA |
10117 | /* If the current general thread belonged to the process we just |
10118 | detached from or has exited, the remote side current general | |
10119 | thread becomes undefined. Considering a case like this: | |
10120 | ||
10121 | - We just got here due to a detach. | |
10122 | - The process that we're detaching from happens to immediately | |
10123 | report a global breakpoint being hit in non-stop mode, in the | |
10124 | same thread we had selected before. | |
10125 | - GDB attaches to this process again. | |
10126 | - This event happens to be the next event we handle. | |
10127 | ||
10128 | GDB would consider that the current general thread didn't need to | |
10129 | be set on the stub side (with Hg), since for all it knew, | |
10130 | GENERAL_THREAD hadn't changed. | |
10131 | ||
10132 | Notice that although in all-stop mode, the remote server always | |
10133 | sets the current thread to the thread reporting the stop event, | |
10134 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
10135 | not* change the current thread when reporting a breakpoint hit, | |
10136 | due to the decoupling of event reporting and event handling. | |
10137 | ||
10138 | To keep things simple, we always invalidate our notion of the | |
10139 | current thread. */ | |
47f8a51d | 10140 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 10141 | |
8020350c | 10142 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 | 10143 | generic_mourn_inferior (); |
2d717e4f | 10144 | } |
c906108c | 10145 | |
57810aa7 | 10146 | bool |
f6ac5f3d | 10147 | extended_remote_target::supports_disable_randomization () |
03583c20 | 10148 | { |
4082afcc | 10149 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
10150 | } |
10151 | ||
6b8edb51 PA |
10152 | void |
10153 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
10154 | { |
10155 | struct remote_state *rs = get_remote_state (); | |
10156 | char *reply; | |
10157 | ||
8d64371b TT |
10158 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
10159 | "QDisableRandomization:%x", val); | |
03583c20 | 10160 | putpkt (rs->buf); |
b6bb3468 | 10161 | reply = remote_get_noisy_reply (); |
03583c20 UW |
10162 | if (*reply == '\0') |
10163 | error (_("Target does not support QDisableRandomization.")); | |
10164 | if (strcmp (reply, "OK") != 0) | |
10165 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
10166 | } | |
10167 | ||
6b8edb51 PA |
10168 | int |
10169 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
10170 | { |
10171 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 10172 | int len; |
94585166 | 10173 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 10174 | |
2d717e4f DJ |
10175 | /* If the user has disabled vRun support, or we have detected that |
10176 | support is not available, do not try it. */ | |
4082afcc | 10177 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 10178 | return -1; |
424163ea | 10179 | |
8d64371b TT |
10180 | strcpy (rs->buf.data (), "vRun;"); |
10181 | len = strlen (rs->buf.data ()); | |
c906108c | 10182 | |
2d717e4f DJ |
10183 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
10184 | error (_("Remote file name too long for run packet")); | |
8d64371b | 10185 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf.data () + len, |
9f1b45b0 | 10186 | strlen (remote_exec_file)); |
2d717e4f | 10187 | |
7c5ded6a | 10188 | if (!args.empty ()) |
2d717e4f | 10189 | { |
2d717e4f | 10190 | int i; |
2d717e4f | 10191 | |
773a1edc | 10192 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
10193 | for (i = 0; argv[i] != NULL; i++) |
10194 | { | |
10195 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
10196 | error (_("Argument list too long for run packet")); | |
10197 | rs->buf[len++] = ';'; | |
8d64371b | 10198 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf.data () + len, |
9f1b45b0 | 10199 | strlen (argv[i])); |
2d717e4f | 10200 | } |
2d717e4f DJ |
10201 | } |
10202 | ||
10203 | rs->buf[len++] = '\0'; | |
10204 | ||
10205 | putpkt (rs->buf); | |
8d64371b | 10206 | getpkt (&rs->buf, 0); |
2d717e4f | 10207 | |
4082afcc | 10208 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 10209 | { |
4082afcc | 10210 | case PACKET_OK: |
3405876a | 10211 | /* We have a wait response. All is well. */ |
2d717e4f | 10212 | return 0; |
4082afcc PA |
10213 | case PACKET_UNKNOWN: |
10214 | return -1; | |
10215 | case PACKET_ERROR: | |
2d717e4f DJ |
10216 | if (remote_exec_file[0] == '\0') |
10217 | error (_("Running the default executable on the remote target failed; " | |
10218 | "try \"set remote exec-file\"?")); | |
10219 | else | |
10220 | error (_("Running \"%s\" on the remote target failed"), | |
10221 | remote_exec_file); | |
4082afcc PA |
10222 | default: |
10223 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 10224 | } |
c906108c SS |
10225 | } |
10226 | ||
0a2dde4a SDJ |
10227 | /* Helper function to send set/unset environment packets. ACTION is |
10228 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
10229 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
10230 | sent. */ | |
10231 | ||
6b8edb51 PA |
10232 | void |
10233 | remote_target::send_environment_packet (const char *action, | |
10234 | const char *packet, | |
10235 | const char *value) | |
0a2dde4a | 10236 | { |
6b8edb51 PA |
10237 | remote_state *rs = get_remote_state (); |
10238 | ||
0a2dde4a SDJ |
10239 | /* Convert the environment variable to an hex string, which |
10240 | is the best format to be transmitted over the wire. */ | |
10241 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
10242 | strlen (value)); | |
10243 | ||
8d64371b | 10244 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
0a2dde4a SDJ |
10245 | "%s:%s", packet, encoded_value.c_str ()); |
10246 | ||
10247 | putpkt (rs->buf); | |
8d64371b TT |
10248 | getpkt (&rs->buf, 0); |
10249 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10250 | warning (_("Unable to %s environment variable '%s' on remote."), |
10251 | action, value); | |
10252 | } | |
10253 | ||
10254 | /* Helper function to handle the QEnvironment* packets. */ | |
10255 | ||
6b8edb51 PA |
10256 | void |
10257 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 10258 | { |
6b8edb51 PA |
10259 | remote_state *rs = get_remote_state (); |
10260 | ||
0a2dde4a SDJ |
10261 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
10262 | { | |
10263 | putpkt ("QEnvironmentReset"); | |
8d64371b TT |
10264 | getpkt (&rs->buf, 0); |
10265 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
10266 | warning (_("Unable to reset environment on remote.")); |
10267 | } | |
10268 | ||
10269 | gdb_environ *e = ¤t_inferior ()->environment; | |
10270 | ||
10271 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
10272 | for (const std::string &el : e->user_set_env ()) | |
6b8edb51 | 10273 | send_environment_packet ("set", "QEnvironmentHexEncoded", |
0a2dde4a SDJ |
10274 | el.c_str ()); |
10275 | ||
10276 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
10277 | for (const std::string &el : e->user_unset_env ()) | |
6b8edb51 | 10278 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
10279 | } |
10280 | ||
bc3b087d SDJ |
10281 | /* Helper function to set the current working directory for the |
10282 | inferior in the remote target. */ | |
10283 | ||
6b8edb51 PA |
10284 | void |
10285 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d SDJ |
10286 | { |
10287 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
10288 | { | |
10289 | const char *inferior_cwd = get_inferior_cwd (); | |
6b8edb51 | 10290 | remote_state *rs = get_remote_state (); |
bc3b087d SDJ |
10291 | |
10292 | if (inferior_cwd != NULL) | |
10293 | { | |
10294 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
10295 | strlen (inferior_cwd)); | |
10296 | ||
8d64371b | 10297 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10298 | "QSetWorkingDir:%s", hexpath.c_str ()); |
10299 | } | |
10300 | else | |
10301 | { | |
10302 | /* An empty inferior_cwd means that the user wants us to | |
10303 | reset the remote server's inferior's cwd. */ | |
8d64371b | 10304 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10305 | "QSetWorkingDir:"); |
10306 | } | |
10307 | ||
10308 | putpkt (rs->buf); | |
8d64371b | 10309 | getpkt (&rs->buf, 0); |
bc3b087d SDJ |
10310 | if (packet_ok (rs->buf, |
10311 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
10312 | != PACKET_OK) | |
10313 | error (_("\ | |
10314 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10315 | directory: %s"), | |
8d64371b | 10316 | rs->buf.data ()); |
bc3b087d SDJ |
10317 | |
10318 | } | |
10319 | } | |
10320 | ||
2d717e4f DJ |
10321 | /* In the extended protocol we want to be able to do things like |
10322 | "run" and have them basically work as expected. So we need | |
10323 | a special create_inferior function. We support changing the | |
10324 | executable file and the command line arguments, but not the | |
10325 | environment. */ | |
10326 | ||
f6ac5f3d PA |
10327 | void |
10328 | extended_remote_target::create_inferior (const char *exec_file, | |
10329 | const std::string &args, | |
10330 | char **env, int from_tty) | |
43ff13b4 | 10331 | { |
3405876a PA |
10332 | int run_worked; |
10333 | char *stop_reply; | |
10334 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10335 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10336 | |
43ff13b4 | 10337 | /* If running asynchronously, register the target file descriptor |
23860348 | 10338 | with the event loop. */ |
75c99385 | 10339 | if (target_can_async_p ()) |
6a3753b3 | 10340 | target_async (1); |
43ff13b4 | 10341 | |
03583c20 | 10342 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10343 | if (supports_disable_randomization ()) |
03583c20 UW |
10344 | extended_remote_disable_randomization (disable_randomization); |
10345 | ||
aefd8b33 SDJ |
10346 | /* If startup-with-shell is on, we inform gdbserver to start the |
10347 | remote inferior using a shell. */ | |
10348 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
10349 | { | |
8d64371b | 10350 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
aefd8b33 SDJ |
10351 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); |
10352 | putpkt (rs->buf); | |
8d64371b TT |
10353 | getpkt (&rs->buf, 0); |
10354 | if (strcmp (rs->buf.data (), "OK") != 0) | |
aefd8b33 SDJ |
10355 | error (_("\ |
10356 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
8d64371b | 10357 | rs->buf.data ()); |
aefd8b33 SDJ |
10358 | } |
10359 | ||
6b8edb51 | 10360 | extended_remote_environment_support (); |
0a2dde4a | 10361 | |
6b8edb51 | 10362 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10363 | |
43ff13b4 | 10364 | /* Now restart the remote server. */ |
3405876a PA |
10365 | run_worked = extended_remote_run (args) != -1; |
10366 | if (!run_worked) | |
2d717e4f DJ |
10367 | { |
10368 | /* vRun was not supported. Fail if we need it to do what the | |
10369 | user requested. */ | |
10370 | if (remote_exec_file[0]) | |
10371 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10372 | if (!args.empty ()) |
65e65158 | 10373 | error (_("Remote target does not support \"set args\" or run ARGS")); |
43ff13b4 | 10374 | |
2d717e4f DJ |
10375 | /* Fall back to "R". */ |
10376 | extended_remote_restart (); | |
10377 | } | |
424163ea | 10378 | |
3405876a | 10379 | /* vRun's success return is a stop reply. */ |
8d64371b | 10380 | stop_reply = run_worked ? rs->buf.data () : NULL; |
3405876a | 10381 | add_current_inferior_and_thread (stop_reply); |
c0a2216e | 10382 | |
2d717e4f DJ |
10383 | /* Get updated offsets, if the stub uses qOffsets. */ |
10384 | get_offsets (); | |
2d717e4f | 10385 | } |
c906108c | 10386 | \f |
c5aa993b | 10387 | |
b775012e LM |
10388 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10389 | the list of conditions (in agent expression bytecode format), if any, the | |
10390 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10391 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10392 | |
10393 | static int | |
10394 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10395 | struct bp_target_info *bp_tgt, char *buf, |
10396 | char *buf_end) | |
b775012e | 10397 | { |
3cde5c42 | 10398 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10399 | return 0; |
10400 | ||
10401 | buf += strlen (buf); | |
bba74b36 | 10402 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10403 | buf++; |
10404 | ||
83621223 | 10405 | /* Send conditions to the target. */ |
d538e36d | 10406 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10407 | { |
bba74b36 | 10408 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10409 | buf += strlen (buf); |
3cde5c42 | 10410 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10411 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10412 | *buf = '\0'; | |
10413 | } | |
b775012e LM |
10414 | return 0; |
10415 | } | |
10416 | ||
d3ce09f5 SS |
10417 | static void |
10418 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10419 | struct bp_target_info *bp_tgt, char *buf) | |
10420 | { | |
3cde5c42 | 10421 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10422 | return; |
10423 | ||
10424 | buf += strlen (buf); | |
10425 | ||
10426 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10427 | buf += strlen (buf); | |
10428 | ||
10429 | /* Concatenate all the agent expressions that are commands into the | |
10430 | cmds parameter. */ | |
df97be55 | 10431 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10432 | { |
10433 | sprintf (buf, "X%x,", aexpr->len); | |
10434 | buf += strlen (buf); | |
3cde5c42 | 10435 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10436 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10437 | *buf = '\0'; | |
10438 | } | |
d3ce09f5 SS |
10439 | } |
10440 | ||
8181d85f DJ |
10441 | /* Insert a breakpoint. On targets that have software breakpoint |
10442 | support, we ask the remote target to do the work; on targets | |
10443 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10444 | |
f6ac5f3d PA |
10445 | int |
10446 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10447 | struct bp_target_info *bp_tgt) | |
c906108c | 10448 | { |
d471ea57 AC |
10449 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10450 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10451 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10452 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10453 | |
4082afcc | 10454 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10455 | { |
0d5ed153 | 10456 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10457 | struct remote_state *rs; |
bba74b36 | 10458 | char *p, *endbuf; |
4fff2411 | 10459 | |
28439a30 PA |
10460 | /* Make sure the remote is pointing at the right process, if |
10461 | necessary. */ | |
10462 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10463 | set_general_process (); | |
10464 | ||
4fff2411 | 10465 | rs = get_remote_state (); |
8d64371b TT |
10466 | p = rs->buf.data (); |
10467 | endbuf = p + get_remote_packet_size (); | |
802188a7 | 10468 | |
96baa820 JM |
10469 | *(p++) = 'Z'; |
10470 | *(p++) = '0'; | |
10471 | *(p++) = ','; | |
7c0f6dcc | 10472 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10473 | p += hexnumstr (p, addr); |
579c6ad9 | 10474 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10475 | |
f6ac5f3d | 10476 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10477 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10478 | |
f6ac5f3d | 10479 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10480 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10481 | ||
6d820c5c | 10482 | putpkt (rs->buf); |
8d64371b | 10483 | getpkt (&rs->buf, 0); |
96baa820 | 10484 | |
6d820c5c | 10485 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10486 | { |
d471ea57 AC |
10487 | case PACKET_ERROR: |
10488 | return -1; | |
10489 | case PACKET_OK: | |
10490 | return 0; | |
10491 | case PACKET_UNKNOWN: | |
10492 | break; | |
96baa820 JM |
10493 | } |
10494 | } | |
c906108c | 10495 | |
0000e5cc PA |
10496 | /* If this breakpoint has target-side commands but this stub doesn't |
10497 | support Z0 packets, throw error. */ | |
3cde5c42 | 10498 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10499 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10500 | Target doesn't support breakpoints that have target side commands.")); | |
10501 | ||
f6ac5f3d | 10502 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10503 | } |
10504 | ||
f6ac5f3d PA |
10505 | int |
10506 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10507 | struct bp_target_info *bp_tgt, | |
10508 | enum remove_bp_reason reason) | |
c906108c | 10509 | { |
8181d85f | 10510 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10511 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10512 | |
4082afcc | 10513 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10514 | { |
8d64371b TT |
10515 | char *p = rs->buf.data (); |
10516 | char *endbuf = p + get_remote_packet_size (); | |
802188a7 | 10517 | |
28439a30 PA |
10518 | /* Make sure the remote is pointing at the right process, if |
10519 | necessary. */ | |
10520 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10521 | set_general_process (); | |
10522 | ||
96baa820 JM |
10523 | *(p++) = 'z'; |
10524 | *(p++) = '0'; | |
10525 | *(p++) = ','; | |
10526 | ||
8181d85f DJ |
10527 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10528 | p += hexnumstr (p, addr); | |
579c6ad9 | 10529 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10530 | |
6d820c5c | 10531 | putpkt (rs->buf); |
8d64371b | 10532 | getpkt (&rs->buf, 0); |
96baa820 | 10533 | |
6d820c5c | 10534 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10535 | } |
10536 | ||
f6ac5f3d | 10537 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10538 | } |
10539 | ||
f486487f | 10540 | static enum Z_packet_type |
d471ea57 AC |
10541 | watchpoint_to_Z_packet (int type) |
10542 | { | |
10543 | switch (type) | |
10544 | { | |
10545 | case hw_write: | |
bb858e6a | 10546 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10547 | break; |
10548 | case hw_read: | |
bb858e6a | 10549 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10550 | break; |
10551 | case hw_access: | |
bb858e6a | 10552 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10553 | break; |
10554 | default: | |
8e65ff28 | 10555 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10556 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10557 | } |
10558 | } | |
10559 | ||
f6ac5f3d PA |
10560 | int |
10561 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10562 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10563 | { |
d01949b6 | 10564 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10565 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10566 | char *p; |
d471ea57 | 10567 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10568 | |
4082afcc | 10569 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10570 | return 1; |
802188a7 | 10571 | |
28439a30 PA |
10572 | /* Make sure the remote is pointing at the right process, if |
10573 | necessary. */ | |
10574 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10575 | set_general_process (); | |
10576 | ||
8d64371b TT |
10577 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "Z%x,", packet); |
10578 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10579 | addr = remote_address_masked (addr); |
10580 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10581 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10582 | |
6d820c5c | 10583 | putpkt (rs->buf); |
8d64371b | 10584 | getpkt (&rs->buf, 0); |
96baa820 | 10585 | |
6d820c5c | 10586 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10587 | { |
10588 | case PACKET_ERROR: | |
d471ea57 | 10589 | return -1; |
85d721b8 PA |
10590 | case PACKET_UNKNOWN: |
10591 | return 1; | |
d471ea57 AC |
10592 | case PACKET_OK: |
10593 | return 0; | |
10594 | } | |
8e65ff28 | 10595 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10596 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10597 | } |
10598 | ||
57810aa7 | 10599 | bool |
f6ac5f3d PA |
10600 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10601 | CORE_ADDR start, int length) | |
283002cf MR |
10602 | { |
10603 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10604 | ||
10605 | return diff < length; | |
10606 | } | |
10607 | ||
d471ea57 | 10608 | |
f6ac5f3d PA |
10609 | int |
10610 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10611 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10612 | { |
d01949b6 | 10613 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10614 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10615 | char *p; |
d471ea57 AC |
10616 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10617 | ||
4082afcc | 10618 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10619 | return -1; |
802188a7 | 10620 | |
28439a30 PA |
10621 | /* Make sure the remote is pointing at the right process, if |
10622 | necessary. */ | |
10623 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10624 | set_general_process (); | |
10625 | ||
8d64371b TT |
10626 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "z%x,", packet); |
10627 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10628 | addr = remote_address_masked (addr); |
10629 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10630 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c | 10631 | putpkt (rs->buf); |
8d64371b | 10632 | getpkt (&rs->buf, 0); |
96baa820 | 10633 | |
6d820c5c | 10634 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10635 | { |
10636 | case PACKET_ERROR: | |
10637 | case PACKET_UNKNOWN: | |
10638 | return -1; | |
10639 | case PACKET_OK: | |
10640 | return 0; | |
10641 | } | |
8e65ff28 | 10642 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10643 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10644 | } |
10645 | ||
3c3bea1c | 10646 | |
60fcc1c3 TT |
10647 | static int remote_hw_watchpoint_limit = -1; |
10648 | static int remote_hw_watchpoint_length_limit = -1; | |
10649 | static int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 10650 | |
f6ac5f3d PA |
10651 | int |
10652 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10653 | { |
10654 | if (remote_hw_watchpoint_length_limit == 0) | |
10655 | return 0; | |
10656 | else if (remote_hw_watchpoint_length_limit < 0) | |
10657 | return 1; | |
10658 | else if (len <= remote_hw_watchpoint_length_limit) | |
10659 | return 1; | |
10660 | else | |
10661 | return 0; | |
10662 | } | |
10663 | ||
f6ac5f3d PA |
10664 | int |
10665 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10666 | { |
3c3bea1c GS |
10667 | if (type == bp_hardware_breakpoint) |
10668 | { | |
10669 | if (remote_hw_breakpoint_limit == 0) | |
10670 | return 0; | |
501eef12 AC |
10671 | else if (remote_hw_breakpoint_limit < 0) |
10672 | return 1; | |
3c3bea1c GS |
10673 | else if (cnt <= remote_hw_breakpoint_limit) |
10674 | return 1; | |
10675 | } | |
10676 | else | |
10677 | { | |
10678 | if (remote_hw_watchpoint_limit == 0) | |
10679 | return 0; | |
501eef12 AC |
10680 | else if (remote_hw_watchpoint_limit < 0) |
10681 | return 1; | |
3c3bea1c GS |
10682 | else if (ot) |
10683 | return -1; | |
10684 | else if (cnt <= remote_hw_watchpoint_limit) | |
10685 | return 1; | |
10686 | } | |
10687 | return -1; | |
10688 | } | |
10689 | ||
f7e6eed5 PA |
10690 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10691 | ||
57810aa7 | 10692 | bool |
f6ac5f3d | 10693 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10694 | { |
799a2abe | 10695 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10696 | |
799a2abe | 10697 | return (thread->priv != NULL |
7aabaf9d SM |
10698 | && (get_remote_thread_info (thread)->stop_reason |
10699 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10700 | } |
10701 | ||
10702 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10703 | remote. */ | |
10704 | ||
57810aa7 | 10705 | bool |
f6ac5f3d | 10706 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10707 | { |
f7e6eed5 PA |
10708 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10709 | } | |
10710 | ||
10711 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10712 | ||
57810aa7 | 10713 | bool |
f6ac5f3d | 10714 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10715 | { |
799a2abe | 10716 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10717 | |
799a2abe | 10718 | return (thread->priv != NULL |
7aabaf9d SM |
10719 | && (get_remote_thread_info (thread)->stop_reason |
10720 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10721 | } |
10722 | ||
10723 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10724 | remote. */ | |
10725 | ||
57810aa7 | 10726 | bool |
f6ac5f3d | 10727 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10728 | { |
f7e6eed5 PA |
10729 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10730 | } | |
10731 | ||
57810aa7 | 10732 | bool |
f6ac5f3d | 10733 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10734 | { |
799a2abe | 10735 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10736 | |
799a2abe | 10737 | return (thread->priv != NULL |
7aabaf9d SM |
10738 | && (get_remote_thread_info (thread)->stop_reason |
10739 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10740 | } |
10741 | ||
57810aa7 | 10742 | bool |
f6ac5f3d | 10743 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10744 | { |
799a2abe | 10745 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10746 | |
799a2abe | 10747 | if (thread->priv != NULL |
7aabaf9d SM |
10748 | && (get_remote_thread_info (thread)->stop_reason |
10749 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10750 | { |
7aabaf9d | 10751 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10752 | return true; |
4aa7a7f5 JJ |
10753 | } |
10754 | ||
57810aa7 | 10755 | return false; |
3c3bea1c GS |
10756 | } |
10757 | ||
10758 | ||
f6ac5f3d PA |
10759 | int |
10760 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10761 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10762 | { |
0d5ed153 | 10763 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10764 | struct remote_state *rs; |
bba74b36 | 10765 | char *p, *endbuf; |
dd61ec5c | 10766 | char *message; |
3c3bea1c | 10767 | |
4082afcc | 10768 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10769 | return -1; |
2bc416ba | 10770 | |
28439a30 PA |
10771 | /* Make sure the remote is pointing at the right process, if |
10772 | necessary. */ | |
10773 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10774 | set_general_process (); | |
10775 | ||
4fff2411 | 10776 | rs = get_remote_state (); |
8d64371b TT |
10777 | p = rs->buf.data (); |
10778 | endbuf = p + get_remote_packet_size (); | |
4fff2411 | 10779 | |
96baa820 JM |
10780 | *(p++) = 'Z'; |
10781 | *(p++) = '1'; | |
10782 | *(p++) = ','; | |
802188a7 | 10783 | |
0d5ed153 | 10784 | addr = remote_address_masked (addr); |
96baa820 | 10785 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10786 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10787 | |
f6ac5f3d | 10788 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10789 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10790 | |
f6ac5f3d | 10791 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10792 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10793 | ||
6d820c5c | 10794 | putpkt (rs->buf); |
8d64371b | 10795 | getpkt (&rs->buf, 0); |
96baa820 | 10796 | |
6d820c5c | 10797 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10798 | { |
10799 | case PACKET_ERROR: | |
dd61ec5c | 10800 | if (rs->buf[1] == '.') |
dda83cd7 SM |
10801 | { |
10802 | message = strchr (&rs->buf[2], '.'); | |
10803 | if (message) | |
10804 | error (_("Remote failure reply: %s"), message + 1); | |
10805 | } | |
dd61ec5c | 10806 | return -1; |
d471ea57 AC |
10807 | case PACKET_UNKNOWN: |
10808 | return -1; | |
10809 | case PACKET_OK: | |
10810 | return 0; | |
10811 | } | |
8e65ff28 | 10812 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10813 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10814 | } |
10815 | ||
d471ea57 | 10816 | |
f6ac5f3d PA |
10817 | int |
10818 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10819 | struct bp_target_info *bp_tgt) | |
96baa820 | 10820 | { |
8181d85f | 10821 | CORE_ADDR addr; |
d01949b6 | 10822 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
10823 | char *p = rs->buf.data (); |
10824 | char *endbuf = p + get_remote_packet_size (); | |
c8189ed1 | 10825 | |
4082afcc | 10826 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10827 | return -1; |
802188a7 | 10828 | |
28439a30 PA |
10829 | /* Make sure the remote is pointing at the right process, if |
10830 | necessary. */ | |
10831 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10832 | set_general_process (); | |
10833 | ||
96baa820 JM |
10834 | *(p++) = 'z'; |
10835 | *(p++) = '1'; | |
10836 | *(p++) = ','; | |
802188a7 | 10837 | |
8181d85f | 10838 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10839 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10840 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10841 | |
6d820c5c | 10842 | putpkt (rs->buf); |
8d64371b | 10843 | getpkt (&rs->buf, 0); |
802188a7 | 10844 | |
6d820c5c | 10845 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10846 | { |
10847 | case PACKET_ERROR: | |
10848 | case PACKET_UNKNOWN: | |
10849 | return -1; | |
10850 | case PACKET_OK: | |
10851 | return 0; | |
10852 | } | |
8e65ff28 | 10853 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10854 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10855 | } |
96baa820 | 10856 | |
4a5e7a5b PA |
10857 | /* Verify memory using the "qCRC:" request. */ |
10858 | ||
f6ac5f3d PA |
10859 | int |
10860 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
10861 | { |
10862 | struct remote_state *rs = get_remote_state (); | |
10863 | unsigned long host_crc, target_crc; | |
10864 | char *tmp; | |
10865 | ||
936d2992 PA |
10866 | /* It doesn't make sense to use qCRC if the remote target is |
10867 | connected but not running. */ | |
55f6301a TT |
10868 | if (target_has_execution () |
10869 | && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
936d2992 PA |
10870 | { |
10871 | enum packet_result result; | |
28439a30 | 10872 | |
936d2992 PA |
10873 | /* Make sure the remote is pointing at the right process. */ |
10874 | set_general_process (); | |
4a5e7a5b | 10875 | |
936d2992 | 10876 | /* FIXME: assumes lma can fit into long. */ |
8d64371b | 10877 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qCRC:%lx,%lx", |
936d2992 PA |
10878 | (long) lma, (long) size); |
10879 | putpkt (rs->buf); | |
4a5e7a5b | 10880 | |
936d2992 PA |
10881 | /* Be clever; compute the host_crc before waiting for target |
10882 | reply. */ | |
10883 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10884 | ||
8d64371b | 10885 | getpkt (&rs->buf, 0); |
4a5e7a5b | 10886 | |
936d2992 PA |
10887 | result = packet_ok (rs->buf, |
10888 | &remote_protocol_packets[PACKET_qCRC]); | |
10889 | if (result == PACKET_ERROR) | |
10890 | return -1; | |
10891 | else if (result == PACKET_OK) | |
10892 | { | |
10893 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10894 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10895 | |
936d2992 PA |
10896 | return (host_crc == target_crc); |
10897 | } | |
10898 | } | |
4a5e7a5b | 10899 | |
f6ac5f3d | 10900 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
10901 | } |
10902 | ||
c906108c SS |
10903 | /* compare-sections command |
10904 | ||
10905 | With no arguments, compares each loadable section in the exec bfd | |
10906 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10907 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10908 | |
c906108c | 10909 | static void |
ac88e2de | 10910 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
10911 | { |
10912 | asection *s; | |
ce359b09 | 10913 | const char *sectname; |
c906108c SS |
10914 | bfd_size_type size; |
10915 | bfd_vma lma; | |
10916 | int matched = 0; | |
10917 | int mismatched = 0; | |
4a5e7a5b | 10918 | int res; |
95cf3b38 | 10919 | int read_only = 0; |
c906108c | 10920 | |
7e10abd1 | 10921 | if (!current_program_space->exec_bfd ()) |
8a3fe4f8 | 10922 | error (_("command cannot be used without an exec file")); |
c906108c | 10923 | |
95cf3b38 DT |
10924 | if (args != NULL && strcmp (args, "-r") == 0) |
10925 | { | |
10926 | read_only = 1; | |
10927 | args = NULL; | |
10928 | } | |
10929 | ||
7e10abd1 | 10930 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
c906108c SS |
10931 | { |
10932 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10933 | continue; /* Skip non-loadable section. */ |
c906108c | 10934 | |
95cf3b38 DT |
10935 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10936 | continue; /* Skip writeable sections */ | |
10937 | ||
fd361982 | 10938 | size = bfd_section_size (s); |
c906108c | 10939 | if (size == 0) |
0df8b418 | 10940 | continue; /* Skip zero-length section. */ |
c906108c | 10941 | |
fd361982 | 10942 | sectname = bfd_section_name (s); |
c906108c | 10943 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10944 | continue; /* Not the section selected by user. */ |
c906108c | 10945 | |
0df8b418 | 10946 | matched = 1; /* Do this section. */ |
c906108c | 10947 | lma = s->lma; |
c906108c | 10948 | |
b80406ac | 10949 | gdb::byte_vector sectdata (size); |
7e10abd1 TT |
10950 | bfd_get_section_contents (current_program_space->exec_bfd (), s, |
10951 | sectdata.data (), 0, size); | |
c906108c | 10952 | |
b80406ac | 10953 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
10954 | |
10955 | if (res == -1) | |
5af949e3 | 10956 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10957 | paddress (target_gdbarch (), lma), |
10958 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10959 | |
5af949e3 | 10960 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10961 | paddress (target_gdbarch (), lma), |
10962 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10963 | if (res) |
c906108c SS |
10964 | printf_filtered ("matched.\n"); |
10965 | else | |
c5aa993b JM |
10966 | { |
10967 | printf_filtered ("MIS-MATCHED!\n"); | |
10968 | mismatched++; | |
10969 | } | |
c906108c SS |
10970 | } |
10971 | if (mismatched > 0) | |
936d2992 | 10972 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10973 | the loaded file\n")); |
c906108c | 10974 | if (args && !matched) |
a3f17187 | 10975 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10976 | } |
10977 | ||
0e7f50da UW |
10978 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10979 | into remote target. The number of bytes written to the remote | |
10980 | target is returned, or -1 for error. */ | |
10981 | ||
6b8edb51 PA |
10982 | target_xfer_status |
10983 | remote_target::remote_write_qxfer (const char *object_name, | |
10984 | const char *annex, const gdb_byte *writebuf, | |
10985 | ULONGEST offset, LONGEST len, | |
10986 | ULONGEST *xfered_len, | |
10987 | struct packet_config *packet) | |
0e7f50da UW |
10988 | { |
10989 | int i, buf_len; | |
10990 | ULONGEST n; | |
0e7f50da UW |
10991 | struct remote_state *rs = get_remote_state (); |
10992 | int max_size = get_memory_write_packet_size (); | |
10993 | ||
7cc244de | 10994 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10995 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10996 | |
10997 | /* Insert header. */ | |
8d64371b | 10998 | i = snprintf (rs->buf.data (), max_size, |
0e7f50da UW |
10999 | "qXfer:%s:write:%s:%s:", |
11000 | object_name, annex ? annex : "", | |
11001 | phex_nz (offset, sizeof offset)); | |
11002 | max_size -= (i + 1); | |
11003 | ||
11004 | /* Escape as much data as fits into rs->buf. */ | |
11005 | buf_len = remote_escape_output | |
8d64371b | 11006 | (writebuf, len, 1, (gdb_byte *) rs->buf.data () + i, &max_size, max_size); |
0e7f50da | 11007 | |
8d64371b TT |
11008 | if (putpkt_binary (rs->buf.data (), i + buf_len) < 0 |
11009 | || getpkt_sane (&rs->buf, 0) < 0 | |
0e7f50da | 11010 | || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 11011 | return TARGET_XFER_E_IO; |
0e7f50da | 11012 | |
8d64371b | 11013 | unpack_varlen_hex (rs->buf.data (), &n); |
9b409511 YQ |
11014 | |
11015 | *xfered_len = n; | |
92ffd475 | 11016 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
11017 | } |
11018 | ||
0876f84a DJ |
11019 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
11020 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
11021 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
11022 | The number of bytes read may be less than LEN without indicating an | |
11023 | EOF. PACKET is checked and updated to indicate whether the remote | |
11024 | target supports this object. */ | |
11025 | ||
6b8edb51 PA |
11026 | target_xfer_status |
11027 | remote_target::remote_read_qxfer (const char *object_name, | |
11028 | const char *annex, | |
11029 | gdb_byte *readbuf, ULONGEST offset, | |
11030 | LONGEST len, | |
11031 | ULONGEST *xfered_len, | |
11032 | struct packet_config *packet) | |
0876f84a | 11033 | { |
0876f84a | 11034 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
11035 | LONGEST i, n, packet_len; |
11036 | ||
7cc244de | 11037 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 11038 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11039 | |
11040 | /* Check whether we've cached an end-of-object packet that matches | |
11041 | this request. */ | |
8e88304f | 11042 | if (rs->finished_object) |
0876f84a | 11043 | { |
8e88304f TT |
11044 | if (strcmp (object_name, rs->finished_object) == 0 |
11045 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
11046 | && offset == rs->finished_offset) | |
9b409511 YQ |
11047 | return TARGET_XFER_EOF; |
11048 | ||
0876f84a DJ |
11049 | |
11050 | /* Otherwise, we're now reading something different. Discard | |
11051 | the cache. */ | |
8e88304f TT |
11052 | xfree (rs->finished_object); |
11053 | xfree (rs->finished_annex); | |
11054 | rs->finished_object = NULL; | |
11055 | rs->finished_annex = NULL; | |
0876f84a DJ |
11056 | } |
11057 | ||
11058 | /* Request only enough to fit in a single packet. The actual data | |
11059 | may not, since we don't know how much of it will need to be escaped; | |
11060 | the target is free to respond with slightly less data. We subtract | |
11061 | five to account for the response type and the protocol frame. */ | |
768adc05 | 11062 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
8d64371b TT |
11063 | snprintf (rs->buf.data (), get_remote_packet_size () - 4, |
11064 | "qXfer:%s:read:%s:%s,%s", | |
0876f84a DJ |
11065 | object_name, annex ? annex : "", |
11066 | phex_nz (offset, sizeof offset), | |
11067 | phex_nz (n, sizeof n)); | |
11068 | i = putpkt (rs->buf); | |
11069 | if (i < 0) | |
2ed4b548 | 11070 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11071 | |
11072 | rs->buf[0] = '\0'; | |
8d64371b | 11073 | packet_len = getpkt_sane (&rs->buf, 0); |
0876f84a | 11074 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 11075 | return TARGET_XFER_E_IO; |
0876f84a DJ |
11076 | |
11077 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8d64371b | 11078 | error (_("Unknown remote qXfer reply: %s"), rs->buf.data ()); |
0876f84a DJ |
11079 | |
11080 | /* 'm' means there is (or at least might be) more data after this | |
11081 | batch. That does not make sense unless there's at least one byte | |
11082 | of data in this reply. */ | |
11083 | if (rs->buf[0] == 'm' && packet_len == 1) | |
11084 | error (_("Remote qXfer reply contained no data.")); | |
11085 | ||
11086 | /* Got some data. */ | |
8d64371b | 11087 | i = remote_unescape_input ((gdb_byte *) rs->buf.data () + 1, |
bc20a4af | 11088 | packet_len - 1, readbuf, n); |
0876f84a DJ |
11089 | |
11090 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
11091 | or possibly empty. If we have the final block of a non-empty |
11092 | object, record this fact to bypass a subsequent partial read. */ | |
11093 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 11094 | { |
8e88304f TT |
11095 | rs->finished_object = xstrdup (object_name); |
11096 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
11097 | rs->finished_offset = offset + i; | |
0876f84a DJ |
11098 | } |
11099 | ||
9b409511 YQ |
11100 | if (i == 0) |
11101 | return TARGET_XFER_EOF; | |
11102 | else | |
11103 | { | |
11104 | *xfered_len = i; | |
11105 | return TARGET_XFER_OK; | |
11106 | } | |
0876f84a DJ |
11107 | } |
11108 | ||
f6ac5f3d PA |
11109 | enum target_xfer_status |
11110 | remote_target::xfer_partial (enum target_object object, | |
11111 | const char *annex, gdb_byte *readbuf, | |
11112 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
11113 | ULONGEST *xfered_len) | |
c906108c | 11114 | { |
82f73884 | 11115 | struct remote_state *rs; |
c906108c | 11116 | int i; |
6d820c5c | 11117 | char *p2; |
1e3ff5ad | 11118 | char query_type; |
124e13d9 | 11119 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 11120 | |
e6e4e701 | 11121 | set_remote_traceframe (); |
82f73884 PA |
11122 | set_general_thread (inferior_ptid); |
11123 | ||
11124 | rs = get_remote_state (); | |
11125 | ||
b2182ed2 | 11126 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
11127 | if (object == TARGET_OBJECT_MEMORY) |
11128 | { | |
2d717e4f DJ |
11129 | /* If the remote target is connected but not running, we should |
11130 | pass this request down to a lower stratum (e.g. the executable | |
11131 | file). */ | |
55f6301a | 11132 | if (!target_has_execution ()) |
9b409511 | 11133 | return TARGET_XFER_EOF; |
2d717e4f | 11134 | |
21e3b9b9 | 11135 | if (writebuf != NULL) |
124e13d9 SM |
11136 | return remote_write_bytes (offset, writebuf, len, unit_size, |
11137 | xfered_len); | |
21e3b9b9 | 11138 | else |
6b8edb51 | 11139 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 11140 | xfered_len); |
21e3b9b9 DJ |
11141 | } |
11142 | ||
4aa995e1 PA |
11143 | /* Handle extra signal info using qxfer packets. */ |
11144 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
11145 | { | |
11146 | if (readbuf) | |
f6ac5f3d | 11147 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 11148 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
11149 | [PACKET_qXfer_siginfo_read]); |
11150 | else | |
f6ac5f3d | 11151 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 11152 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
11153 | &remote_protocol_packets |
11154 | [PACKET_qXfer_siginfo_write]); | |
11155 | } | |
11156 | ||
0fb4aa4b PA |
11157 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
11158 | { | |
11159 | if (readbuf) | |
f6ac5f3d | 11160 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 11161 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
11162 | &remote_protocol_packets |
11163 | [PACKET_qXfer_statictrace_read]); | |
11164 | else | |
2ed4b548 | 11165 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
11166 | } |
11167 | ||
a76d924d DJ |
11168 | /* Only handle flash writes. */ |
11169 | if (writebuf != NULL) | |
11170 | { | |
a76d924d DJ |
11171 | switch (object) |
11172 | { | |
11173 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 11174 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 11175 | writebuf); |
a76d924d DJ |
11176 | |
11177 | default: | |
2ed4b548 | 11178 | return TARGET_XFER_E_IO; |
a76d924d DJ |
11179 | } |
11180 | } | |
4b8a223f | 11181 | |
1e3ff5ad AC |
11182 | /* Map pre-existing objects onto letters. DO NOT do this for new |
11183 | objects!!! Instead specify new query packets. */ | |
11184 | switch (object) | |
c906108c | 11185 | { |
1e3ff5ad AC |
11186 | case TARGET_OBJECT_AVR: |
11187 | query_type = 'R'; | |
11188 | break; | |
802188a7 RM |
11189 | |
11190 | case TARGET_OBJECT_AUXV: | |
0876f84a | 11191 | gdb_assert (annex == NULL); |
f6ac5f3d | 11192 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 11193 | xfered_len, |
0876f84a | 11194 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 11195 | |
23181151 DJ |
11196 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
11197 | return remote_read_qxfer | |
f6ac5f3d | 11198 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
11199 | &remote_protocol_packets[PACKET_qXfer_features]); |
11200 | ||
cfa9d6d9 DJ |
11201 | case TARGET_OBJECT_LIBRARIES: |
11202 | return remote_read_qxfer | |
f6ac5f3d | 11203 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
11204 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
11205 | ||
2268b414 JK |
11206 | case TARGET_OBJECT_LIBRARIES_SVR4: |
11207 | return remote_read_qxfer | |
f6ac5f3d | 11208 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
11209 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
11210 | ||
fd79ecee DJ |
11211 | case TARGET_OBJECT_MEMORY_MAP: |
11212 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11213 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 11214 | xfered_len, |
fd79ecee DJ |
11215 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
11216 | ||
07e059b5 VP |
11217 | case TARGET_OBJECT_OSDATA: |
11218 | /* Should only get here if we're connected. */ | |
5d93a237 | 11219 | gdb_assert (rs->remote_desc); |
07e059b5 | 11220 | return remote_read_qxfer |
f6ac5f3d | 11221 | ("osdata", annex, readbuf, offset, len, xfered_len, |
dda83cd7 | 11222 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
07e059b5 | 11223 | |
dc146f7c VP |
11224 | case TARGET_OBJECT_THREADS: |
11225 | gdb_assert (annex == NULL); | |
f6ac5f3d | 11226 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 11227 | xfered_len, |
dc146f7c VP |
11228 | &remote_protocol_packets[PACKET_qXfer_threads]); |
11229 | ||
b3b9301e PA |
11230 | case TARGET_OBJECT_TRACEFRAME_INFO: |
11231 | gdb_assert (annex == NULL); | |
11232 | return remote_read_qxfer | |
f6ac5f3d | 11233 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 11234 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
11235 | |
11236 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 11237 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 11238 | xfered_len, |
78d85199 | 11239 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
11240 | |
11241 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 11242 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 11243 | xfered_len, |
169081d0 TG |
11244 | &remote_protocol_packets[PACKET_qXfer_uib]); |
11245 | ||
9accd112 | 11246 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 11247 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 11248 | xfered_len, |
dda83cd7 | 11249 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
9accd112 | 11250 | |
f4abbc16 | 11251 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 11252 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
11253 | len, xfered_len, |
11254 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
11255 | ||
c78fa86a | 11256 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 11257 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
11258 | len, xfered_len, |
11259 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
11260 | ||
1e3ff5ad | 11261 | default: |
2ed4b548 | 11262 | return TARGET_XFER_E_IO; |
c906108c SS |
11263 | } |
11264 | ||
0df8b418 | 11265 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 11266 | large enough let the caller deal with it. */ |
ea9c271d | 11267 | if (len < get_remote_packet_size ()) |
2ed4b548 | 11268 | return TARGET_XFER_E_IO; |
ea9c271d | 11269 | len = get_remote_packet_size (); |
1e3ff5ad | 11270 | |
23860348 | 11271 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 11272 | if (!rs->remote_desc) |
8a3fe4f8 | 11273 | error (_("remote query is only available after target open")); |
c906108c | 11274 | |
1e3ff5ad | 11275 | gdb_assert (annex != NULL); |
4b8a223f | 11276 | gdb_assert (readbuf != NULL); |
c906108c | 11277 | |
8d64371b | 11278 | p2 = rs->buf.data (); |
c906108c SS |
11279 | *p2++ = 'q'; |
11280 | *p2++ = query_type; | |
11281 | ||
23860348 MS |
11282 | /* We used one buffer char for the remote protocol q command and |
11283 | another for the query type. As the remote protocol encapsulation | |
11284 | uses 4 chars plus one extra in case we are debugging | |
11285 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
11286 | string. */ | |
c906108c | 11287 | i = 0; |
ea9c271d | 11288 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11289 | { |
1e3ff5ad AC |
11290 | /* Bad caller may have sent forbidden characters. */ |
11291 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11292 | *p2++ = annex[i]; | |
c906108c SS |
11293 | i++; |
11294 | } | |
1e3ff5ad AC |
11295 | *p2 = '\0'; |
11296 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11297 | |
6d820c5c | 11298 | i = putpkt (rs->buf); |
c5aa993b | 11299 | if (i < 0) |
2ed4b548 | 11300 | return TARGET_XFER_E_IO; |
c906108c | 11301 | |
8d64371b TT |
11302 | getpkt (&rs->buf, 0); |
11303 | strcpy ((char *) readbuf, rs->buf.data ()); | |
c906108c | 11304 | |
9b409511 | 11305 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11306 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11307 | } |
11308 | ||
09c98b44 DB |
11309 | /* Implementation of to_get_memory_xfer_limit. */ |
11310 | ||
f6ac5f3d PA |
11311 | ULONGEST |
11312 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11313 | { |
11314 | return get_memory_write_packet_size (); | |
11315 | } | |
11316 | ||
f6ac5f3d PA |
11317 | int |
11318 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11319 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11320 | CORE_ADDR *found_addrp) | |
08388c79 | 11321 | { |
f5656ead | 11322 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
11323 | struct remote_state *rs = get_remote_state (); |
11324 | int max_size = get_memory_write_packet_size (); | |
11325 | struct packet_config *packet = | |
11326 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
11327 | /* Number of packet bytes used to encode the pattern; |
11328 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11329 | int escaped_pattern_len; |
0df8b418 | 11330 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11331 | int used_pattern_len; |
11332 | int i; | |
11333 | int found; | |
11334 | ULONGEST found_addr; | |
11335 | ||
4a72de73 TT |
11336 | auto read_memory = [=] (CORE_ADDR addr, gdb_byte *result, size_t len) |
11337 | { | |
11338 | return (target_read (this, TARGET_OBJECT_MEMORY, NULL, result, addr, len) | |
11339 | == len); | |
11340 | }; | |
11341 | ||
7cc244de PA |
11342 | /* Don't go to the target if we don't have to. This is done before |
11343 | checking packet_config_support to avoid the possibility that a | |
11344 | success for this edge case means the facility works in | |
11345 | general. */ | |
08388c79 DE |
11346 | if (pattern_len > search_space_len) |
11347 | return 0; | |
11348 | if (pattern_len == 0) | |
11349 | { | |
11350 | *found_addrp = start_addr; | |
11351 | return 1; | |
11352 | } | |
11353 | ||
11354 | /* If we already know the packet isn't supported, fall back to the simple | |
11355 | way of searching memory. */ | |
11356 | ||
4082afcc | 11357 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
11358 | { |
11359 | /* Target doesn't provided special support, fall back and use the | |
11360 | standard support (copy memory and do the search here). */ | |
4a72de73 | 11361 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11362 | pattern, pattern_len, found_addrp); |
11363 | } | |
11364 | ||
28439a30 PA |
11365 | /* Make sure the remote is pointing at the right process. */ |
11366 | set_general_process (); | |
11367 | ||
08388c79 | 11368 | /* Insert header. */ |
8d64371b | 11369 | i = snprintf (rs->buf.data (), max_size, |
08388c79 | 11370 | "qSearch:memory:%s;%s;", |
5af949e3 | 11371 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11372 | phex_nz (search_space_len, sizeof (search_space_len))); |
11373 | max_size -= (i + 1); | |
11374 | ||
11375 | /* Escape as much data as fits into rs->buf. */ | |
11376 | escaped_pattern_len = | |
8d64371b TT |
11377 | remote_escape_output (pattern, pattern_len, 1, |
11378 | (gdb_byte *) rs->buf.data () + i, | |
08388c79 DE |
11379 | &used_pattern_len, max_size); |
11380 | ||
11381 | /* Bail if the pattern is too large. */ | |
11382 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11383 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 | 11384 | |
8d64371b TT |
11385 | if (putpkt_binary (rs->buf.data (), i + escaped_pattern_len) < 0 |
11386 | || getpkt_sane (&rs->buf, 0) < 0 | |
08388c79 DE |
11387 | || packet_ok (rs->buf, packet) != PACKET_OK) |
11388 | { | |
11389 | /* The request may not have worked because the command is not | |
11390 | supported. If so, fall back to the simple way. */ | |
7cc244de | 11391 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 11392 | { |
4a72de73 | 11393 | return simple_search_memory (read_memory, start_addr, search_space_len, |
08388c79 DE |
11394 | pattern, pattern_len, found_addrp); |
11395 | } | |
11396 | return -1; | |
11397 | } | |
11398 | ||
11399 | if (rs->buf[0] == '0') | |
11400 | found = 0; | |
11401 | else if (rs->buf[0] == '1') | |
11402 | { | |
11403 | found = 1; | |
11404 | if (rs->buf[1] != ',') | |
8d64371b TT |
11405 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
11406 | unpack_varlen_hex (&rs->buf[2], &found_addr); | |
08388c79 DE |
11407 | *found_addrp = found_addr; |
11408 | } | |
11409 | else | |
8d64371b | 11410 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
08388c79 DE |
11411 | |
11412 | return found; | |
11413 | } | |
11414 | ||
f6ac5f3d PA |
11415 | void |
11416 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11417 | { |
d01949b6 | 11418 | struct remote_state *rs = get_remote_state (); |
8d64371b | 11419 | char *p = rs->buf.data (); |
96baa820 | 11420 | |
5d93a237 | 11421 | if (!rs->remote_desc) |
8a3fe4f8 | 11422 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11423 | |
23860348 | 11424 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11425 | if (command == NULL) |
11426 | command = ""; | |
11427 | ||
23860348 | 11428 | /* The query prefix. */ |
8d64371b TT |
11429 | strcpy (rs->buf.data (), "qRcmd,"); |
11430 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 | 11431 | |
8d64371b | 11432 | if ((strlen (rs->buf.data ()) + strlen (command) * 2 + 8/*misc*/) |
3e43a32a | 11433 | > get_remote_packet_size ()) |
8a3fe4f8 | 11434 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11435 | |
23860348 | 11436 | /* Encode the actual command. */ |
a30bf1f1 | 11437 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11438 | |
6d820c5c | 11439 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11440 | error (_("Communication problem with target.")); |
96baa820 JM |
11441 | |
11442 | /* get/display the response */ | |
11443 | while (1) | |
11444 | { | |
2e9f7625 DJ |
11445 | char *buf; |
11446 | ||
00bf0b85 | 11447 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11448 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11449 | rs->buf[0] = '\0'; |
8d64371b | 11450 | if (getpkt_sane (&rs->buf, 0) == -1) |
dda83cd7 SM |
11451 | { |
11452 | /* Timeout. Continue to (try to) read responses. | |
11453 | This is better than stopping with an error, assuming the stub | |
11454 | is still executing the (long) monitor command. | |
11455 | If needed, the user can interrupt gdb using C-c, obtaining | |
11456 | an effect similar to stop on timeout. */ | |
11457 | continue; | |
11458 | } | |
8d64371b | 11459 | buf = rs->buf.data (); |
96baa820 | 11460 | if (buf[0] == '\0') |
8a3fe4f8 | 11461 | error (_("Target does not support this command.")); |
96baa820 JM |
11462 | if (buf[0] == 'O' && buf[1] != 'K') |
11463 | { | |
23860348 | 11464 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11465 | continue; |
11466 | } | |
11467 | if (strcmp (buf, "OK") == 0) | |
11468 | break; | |
7be570e7 JM |
11469 | if (strlen (buf) == 3 && buf[0] == 'E' |
11470 | && isdigit (buf[1]) && isdigit (buf[2])) | |
11471 | { | |
8a3fe4f8 | 11472 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11473 | } |
96baa820 JM |
11474 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11475 | { | |
11476 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11477 | |
96baa820 JM |
11478 | fputc_unfiltered (c, outbuf); |
11479 | } | |
11480 | break; | |
11481 | } | |
11482 | } | |
11483 | ||
f6ac5f3d PA |
11484 | std::vector<mem_region> |
11485 | remote_target::memory_map () | |
fd79ecee | 11486 | { |
a664f67e | 11487 | std::vector<mem_region> result; |
9018be22 | 11488 | gdb::optional<gdb::char_vector> text |
8b88a78e | 11489 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_MEMORY_MAP, NULL); |
fd79ecee DJ |
11490 | |
11491 | if (text) | |
9018be22 | 11492 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11493 | |
11494 | return result; | |
11495 | } | |
11496 | ||
c906108c | 11497 | static void |
ac88e2de | 11498 | packet_command (const char *args, int from_tty) |
c906108c | 11499 | { |
6b8edb51 | 11500 | remote_target *remote = get_current_remote_target (); |
c906108c | 11501 | |
6b8edb51 | 11502 | if (remote == nullptr) |
8a3fe4f8 | 11503 | error (_("command can only be used with remote target")); |
c906108c | 11504 | |
6b8edb51 PA |
11505 | remote->packet_command (args, from_tty); |
11506 | } | |
11507 | ||
11508 | void | |
11509 | remote_target::packet_command (const char *args, int from_tty) | |
11510 | { | |
c5aa993b | 11511 | if (!args) |
8a3fe4f8 | 11512 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
11513 | |
11514 | puts_filtered ("sending: "); | |
11515 | print_packet (args); | |
11516 | puts_filtered ("\n"); | |
11517 | putpkt (args); | |
11518 | ||
6b8edb51 PA |
11519 | remote_state *rs = get_remote_state (); |
11520 | ||
8d64371b | 11521 | getpkt (&rs->buf, 0); |
c906108c | 11522 | puts_filtered ("received: "); |
8d64371b | 11523 | print_packet (rs->buf.data ()); |
c906108c SS |
11524 | puts_filtered ("\n"); |
11525 | } | |
11526 | ||
11527 | #if 0 | |
23860348 | 11528 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11529 | |
a14ed312 | 11530 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11531 | |
a14ed312 | 11532 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11533 | |
a14ed312 | 11534 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11535 | |
a14ed312 | 11536 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11537 | |
23860348 | 11538 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11539 | |
a14ed312 | 11540 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11541 | |
23860348 | 11542 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11543 | |
a14ed312 | 11544 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11545 | |
a14ed312 | 11546 | static void init_remote_threadtests (void); |
c906108c | 11547 | |
23860348 | 11548 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11549 | |
11550 | static void | |
0b39b52e | 11551 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11552 | { |
11553 | int sample_thread = SAMPLE_THREAD; | |
11554 | ||
a3f17187 | 11555 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 11556 | set_general_thread (sample_thread); |
c906108c SS |
11557 | } |
11558 | ||
11559 | ||
11560 | static void | |
0b39b52e | 11561 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11562 | { |
11563 | int sample_thread = SAMPLE_THREAD; | |
e99b03dc | 11564 | int pid = inferior_ptid.pid (); |
fd79271b | 11565 | ptid_t ptid = ptid_t (pid, sample_thread, 0); |
c906108c | 11566 | |
79d7f229 | 11567 | if (remote_thread_alive (ptid)) |
c906108c SS |
11568 | printf_filtered ("PASS: Thread alive test\n"); |
11569 | else | |
11570 | printf_filtered ("FAIL: Thread alive test\n"); | |
11571 | } | |
11572 | ||
23860348 | 11573 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11574 | |
11575 | void | |
fba45db2 | 11576 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11577 | { |
11578 | char hexid[20]; | |
11579 | ||
405feb71 | 11580 | pack_threadid (&hexid[0], ref); /* Convert thread id into hex. */ |
c906108c SS |
11581 | hexid[16] = 0; |
11582 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
11583 | } | |
11584 | ||
11585 | static void | |
0b39b52e | 11586 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11587 | { |
11588 | int startflag = 1; | |
11589 | threadref nextthread; | |
11590 | int done, result_count; | |
11591 | threadref threadlist[3]; | |
11592 | ||
11593 | printf_filtered ("Remote Threadlist test\n"); | |
11594 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
11595 | &result_count, &threadlist[0])) | |
11596 | printf_filtered ("FAIL: threadlist test\n"); | |
11597 | else | |
11598 | { | |
11599 | threadref *scan = threadlist; | |
11600 | threadref *limit = scan + result_count; | |
11601 | ||
11602 | while (scan < limit) | |
11603 | output_threadid (" thread ", scan++); | |
11604 | } | |
11605 | } | |
11606 | ||
11607 | void | |
fba45db2 | 11608 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11609 | { |
11610 | output_threadid ("Threadid: ", &info->threadid); | |
11611 | printf_filtered ("Name: %s\n ", info->shortname); | |
11612 | printf_filtered ("State: %s\n", info->display); | |
11613 | printf_filtered ("other: %s\n\n", info->more_display); | |
11614 | } | |
11615 | ||
11616 | int | |
fba45db2 | 11617 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11618 | { |
11619 | int result; | |
11620 | int set; | |
11621 | struct gdb_ext_thread_info threadinfo; | |
11622 | ||
11623 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11624 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11625 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11626 | display_thread_info (&threadinfo); | |
11627 | return result; | |
11628 | } | |
11629 | ||
11630 | static void | |
0b39b52e | 11631 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11632 | { |
11633 | int athread = SAMPLE_THREAD; | |
11634 | threadref thread; | |
11635 | int set; | |
11636 | ||
11637 | int_to_threadref (&thread, athread); | |
11638 | printf_filtered ("Remote Threadinfo test\n"); | |
11639 | if (!get_and_display_threadinfo (&thread)) | |
11640 | printf_filtered ("FAIL cannot get thread info\n"); | |
11641 | } | |
11642 | ||
11643 | static int | |
fba45db2 | 11644 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11645 | { |
11646 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11647 | return get_and_display_threadinfo (ref); | |
11648 | } | |
11649 | ||
11650 | static void | |
0b39b52e | 11651 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
11652 | { |
11653 | printf_filtered ("Remote Threadlist update test\n"); | |
11654 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11655 | } | |
11656 | ||
11657 | static void | |
11658 | init_remote_threadtests (void) | |
11659 | { | |
3e43a32a MS |
11660 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11661 | _("Fetch and print the remote list of " | |
590042fc | 11662 | "thread identifiers, one pkt only.")); |
c906108c | 11663 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
590042fc | 11664 | _("Fetch and display info about one thread.")); |
c906108c | 11665 | add_com ("tset", class_obscure, threadset_test_cmd, |
590042fc | 11666 | _("Test setting to a different thread.")); |
c906108c | 11667 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
590042fc | 11668 | _("Iterate through updating all remote thread info.")); |
c906108c | 11669 | add_com ("talive", class_obscure, threadalive_test, |
590042fc | 11670 | _("Remote thread alive test.")); |
c906108c SS |
11671 | } |
11672 | ||
11673 | #endif /* 0 */ | |
11674 | ||
a068643d | 11675 | /* Convert a thread ID to a string. */ |
f3fb8c85 | 11676 | |
a068643d | 11677 | std::string |
f6ac5f3d | 11678 | remote_target::pid_to_str (ptid_t ptid) |
f3fb8c85 | 11679 | { |
82f73884 | 11680 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11681 | |
d7e15655 | 11682 | if (ptid == null_ptid) |
7cee1e54 | 11683 | return normal_pid_to_str (ptid); |
0e998d96 | 11684 | else if (ptid.is_pid ()) |
ecd0ada5 PA |
11685 | { |
11686 | /* Printing an inferior target id. */ | |
11687 | ||
11688 | /* When multi-process extensions are off, there's no way in the | |
11689 | remote protocol to know the remote process id, if there's any | |
11690 | at all. There's one exception --- when we're connected with | |
11691 | target extended-remote, and we manually attached to a process | |
11692 | with "attach PID". We don't record anywhere a flag that | |
11693 | allows us to distinguish that case from the case of | |
11694 | connecting with extended-remote and the stub already being | |
11695 | attached to a process, and reporting yes to qAttached, hence | |
11696 | no smart special casing here. */ | |
11697 | if (!remote_multi_process_p (rs)) | |
a068643d | 11698 | return "Remote target"; |
ecd0ada5 PA |
11699 | |
11700 | return normal_pid_to_str (ptid); | |
82f73884 | 11701 | } |
ecd0ada5 | 11702 | else |
79d7f229 | 11703 | { |
d7e15655 | 11704 | if (magic_null_ptid == ptid) |
a068643d | 11705 | return "Thread <main>"; |
8020350c | 11706 | else if (remote_multi_process_p (rs)) |
e38504b3 | 11707 | if (ptid.lwp () == 0) |
de0d863e DB |
11708 | return normal_pid_to_str (ptid); |
11709 | else | |
a068643d TT |
11710 | return string_printf ("Thread %d.%ld", |
11711 | ptid.pid (), ptid.lwp ()); | |
ecd0ada5 | 11712 | else |
a068643d | 11713 | return string_printf ("Thread %ld", ptid.lwp ()); |
79d7f229 | 11714 | } |
f3fb8c85 MS |
11715 | } |
11716 | ||
38691318 KB |
11717 | /* Get the address of the thread local variable in OBJFILE which is |
11718 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11719 | ||
f6ac5f3d PA |
11720 | CORE_ADDR |
11721 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11722 | CORE_ADDR offset) | |
38691318 | 11723 | { |
4082afcc | 11724 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11725 | { |
11726 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11727 | char *p = rs->buf.data (); |
11728 | char *endp = p + get_remote_packet_size (); | |
571dd617 | 11729 | enum packet_result result; |
38691318 KB |
11730 | |
11731 | strcpy (p, "qGetTLSAddr:"); | |
11732 | p += strlen (p); | |
82f73884 | 11733 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11734 | *p++ = ','; |
11735 | p += hexnumstr (p, offset); | |
11736 | *p++ = ','; | |
11737 | p += hexnumstr (p, lm); | |
11738 | *p++ = '\0'; | |
11739 | ||
6d820c5c | 11740 | putpkt (rs->buf); |
8d64371b | 11741 | getpkt (&rs->buf, 0); |
3e43a32a MS |
11742 | result = packet_ok (rs->buf, |
11743 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11744 | if (result == PACKET_OK) |
38691318 | 11745 | { |
b926417a | 11746 | ULONGEST addr; |
38691318 | 11747 | |
8d64371b | 11748 | unpack_varlen_hex (rs->buf.data (), &addr); |
b926417a | 11749 | return addr; |
38691318 | 11750 | } |
571dd617 | 11751 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11752 | throw_error (TLS_GENERIC_ERROR, |
11753 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11754 | else |
109c3e39 AC |
11755 | throw_error (TLS_GENERIC_ERROR, |
11756 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11757 | } |
11758 | else | |
109c3e39 AC |
11759 | throw_error (TLS_GENERIC_ERROR, |
11760 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11761 | /* Not reached. */ |
11762 | return 0; | |
11763 | } | |
11764 | ||
711e434b PM |
11765 | /* Provide thread local base, i.e. Thread Information Block address. |
11766 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11767 | ||
57810aa7 | 11768 | bool |
f6ac5f3d | 11769 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11770 | { |
4082afcc | 11771 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11772 | { |
11773 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11774 | char *p = rs->buf.data (); |
11775 | char *endp = p + get_remote_packet_size (); | |
711e434b PM |
11776 | enum packet_result result; |
11777 | ||
11778 | strcpy (p, "qGetTIBAddr:"); | |
11779 | p += strlen (p); | |
11780 | p = write_ptid (p, endp, ptid); | |
11781 | *p++ = '\0'; | |
11782 | ||
11783 | putpkt (rs->buf); | |
8d64371b | 11784 | getpkt (&rs->buf, 0); |
711e434b PM |
11785 | result = packet_ok (rs->buf, |
11786 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11787 | if (result == PACKET_OK) | |
11788 | { | |
b926417a | 11789 | ULONGEST val; |
8d64371b | 11790 | unpack_varlen_hex (rs->buf.data (), &val); |
711e434b | 11791 | if (addr) |
b926417a | 11792 | *addr = (CORE_ADDR) val; |
57810aa7 | 11793 | return true; |
711e434b PM |
11794 | } |
11795 | else if (result == PACKET_UNKNOWN) | |
11796 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11797 | else | |
11798 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11799 | } | |
11800 | else | |
11801 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11802 | /* Not reached. */ | |
57810aa7 | 11803 | return false; |
711e434b PM |
11804 | } |
11805 | ||
29709017 DJ |
11806 | /* Support for inferring a target description based on the current |
11807 | architecture and the size of a 'g' packet. While the 'g' packet | |
11808 | can have any size (since optional registers can be left off the | |
11809 | end), some sizes are easily recognizable given knowledge of the | |
11810 | approximate architecture. */ | |
11811 | ||
11812 | struct remote_g_packet_guess | |
11813 | { | |
eefce37f TT |
11814 | remote_g_packet_guess (int bytes_, const struct target_desc *tdesc_) |
11815 | : bytes (bytes_), | |
11816 | tdesc (tdesc_) | |
11817 | { | |
11818 | } | |
11819 | ||
29709017 DJ |
11820 | int bytes; |
11821 | const struct target_desc *tdesc; | |
11822 | }; | |
29709017 | 11823 | |
eefce37f | 11824 | struct remote_g_packet_data : public allocate_on_obstack |
29709017 | 11825 | { |
eefce37f | 11826 | std::vector<remote_g_packet_guess> guesses; |
29709017 DJ |
11827 | }; |
11828 | ||
11829 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11830 | ||
11831 | static void * | |
11832 | remote_g_packet_data_init (struct obstack *obstack) | |
11833 | { | |
eefce37f | 11834 | return new (obstack) remote_g_packet_data; |
29709017 DJ |
11835 | } |
11836 | ||
11837 | void | |
11838 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11839 | const struct target_desc *tdesc) | |
11840 | { | |
11841 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11842 | = ((struct remote_g_packet_data *) |
11843 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11844 | |
11845 | gdb_assert (tdesc != NULL); | |
11846 | ||
eefce37f TT |
11847 | for (const remote_g_packet_guess &guess : data->guesses) |
11848 | if (guess.bytes == bytes) | |
29709017 | 11849 | internal_error (__FILE__, __LINE__, |
9b20d036 | 11850 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11851 | bytes); |
11852 | ||
eefce37f | 11853 | data->guesses.emplace_back (bytes, tdesc); |
29709017 DJ |
11854 | } |
11855 | ||
eefce37f TT |
11856 | /* Return true if remote_read_description would do anything on this target |
11857 | and architecture, false otherwise. */ | |
d962ef82 | 11858 | |
eefce37f | 11859 | static bool |
d962ef82 DJ |
11860 | remote_read_description_p (struct target_ops *target) |
11861 | { | |
11862 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11863 | = ((struct remote_g_packet_data *) |
11864 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 | 11865 | |
eefce37f | 11866 | return !data->guesses.empty (); |
d962ef82 DJ |
11867 | } |
11868 | ||
f6ac5f3d PA |
11869 | const struct target_desc * |
11870 | remote_target::read_description () | |
29709017 DJ |
11871 | { |
11872 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11873 | = ((struct remote_g_packet_data *) |
11874 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11875 | |
d962ef82 DJ |
11876 | /* Do not try this during initial connection, when we do not know |
11877 | whether there is a running but stopped thread. */ | |
55f6301a | 11878 | if (!target_has_execution () || inferior_ptid == null_ptid) |
b6a8c27b | 11879 | return beneath ()->read_description (); |
d962ef82 | 11880 | |
eefce37f | 11881 | if (!data->guesses.empty ()) |
29709017 | 11882 | { |
29709017 DJ |
11883 | int bytes = send_g_packet (); |
11884 | ||
eefce37f TT |
11885 | for (const remote_g_packet_guess &guess : data->guesses) |
11886 | if (guess.bytes == bytes) | |
11887 | return guess.tdesc; | |
29709017 DJ |
11888 | |
11889 | /* We discard the g packet. A minor optimization would be to | |
11890 | hold on to it, and fill the register cache once we have selected | |
11891 | an architecture, but it's too tricky to do safely. */ | |
11892 | } | |
11893 | ||
b6a8c27b | 11894 | return beneath ()->read_description (); |
29709017 DJ |
11895 | } |
11896 | ||
a6b151f1 DJ |
11897 | /* Remote file transfer support. This is host-initiated I/O, not |
11898 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11899 | ||
11900 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11901 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11902 | decrease *LEFT. Otherwise raise an error. */ | |
11903 | ||
11904 | static void | |
a121b7c1 | 11905 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11906 | { |
11907 | int len = strlen (string); | |
11908 | ||
11909 | if (len > *left) | |
11910 | error (_("Packet too long for target.")); | |
11911 | ||
11912 | memcpy (*buffer, string, len); | |
11913 | *buffer += len; | |
11914 | *left -= len; | |
11915 | ||
11916 | /* NUL-terminate the buffer as a convenience, if there is | |
11917 | room. */ | |
11918 | if (*left) | |
11919 | **buffer = '\0'; | |
11920 | } | |
11921 | ||
11922 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11923 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11924 | decrease *LEFT. Otherwise raise an error. */ | |
11925 | ||
11926 | static void | |
11927 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11928 | int len) | |
11929 | { | |
11930 | if (2 * len > *left) | |
11931 | error (_("Packet too long for target.")); | |
11932 | ||
11933 | bin2hex (bytes, *buffer, len); | |
11934 | *buffer += 2 * len; | |
11935 | *left -= 2 * len; | |
11936 | ||
11937 | /* NUL-terminate the buffer as a convenience, if there is | |
11938 | room. */ | |
11939 | if (*left) | |
11940 | **buffer = '\0'; | |
11941 | } | |
11942 | ||
11943 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11944 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11945 | decrease *LEFT. Otherwise raise an error. */ | |
11946 | ||
11947 | static void | |
11948 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11949 | { | |
11950 | int len = hexnumlen (value); | |
11951 | ||
11952 | if (len > *left) | |
11953 | error (_("Packet too long for target.")); | |
11954 | ||
11955 | hexnumstr (*buffer, value); | |
11956 | *buffer += len; | |
11957 | *left -= len; | |
11958 | ||
11959 | /* NUL-terminate the buffer as a convenience, if there is | |
11960 | room. */ | |
11961 | if (*left) | |
11962 | **buffer = '\0'; | |
11963 | } | |
11964 | ||
11965 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11966 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11967 | was included, and *ATTACHMENT to point to the start of the annex | |
11968 | if any. The length of the packet isn't needed here; there may | |
11969 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11970 | ||
11971 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11972 | -1 is returned, the other variables may not be initialized. */ | |
11973 | ||
11974 | static int | |
11975 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11976 | int *remote_errno, char **attachment) | |
11977 | { | |
11978 | char *p, *p2; | |
11979 | ||
11980 | *remote_errno = 0; | |
11981 | *attachment = NULL; | |
11982 | ||
11983 | if (buffer[0] != 'F') | |
11984 | return -1; | |
11985 | ||
11986 | errno = 0; | |
11987 | *retcode = strtol (&buffer[1], &p, 16); | |
11988 | if (errno != 0 || p == &buffer[1]) | |
11989 | return -1; | |
11990 | ||
11991 | /* Check for ",errno". */ | |
11992 | if (*p == ',') | |
11993 | { | |
11994 | errno = 0; | |
11995 | *remote_errno = strtol (p + 1, &p2, 16); | |
11996 | if (errno != 0 || p + 1 == p2) | |
11997 | return -1; | |
11998 | p = p2; | |
11999 | } | |
12000 | ||
12001 | /* Check for ";attachment". If there is no attachment, the | |
12002 | packet should end here. */ | |
12003 | if (*p == ';') | |
12004 | { | |
12005 | *attachment = p + 1; | |
12006 | return 0; | |
12007 | } | |
12008 | else if (*p == '\0') | |
12009 | return 0; | |
12010 | else | |
12011 | return -1; | |
12012 | } | |
12013 | ||
12014 | /* Send a prepared I/O packet to the target and read its response. | |
12015 | The prepared packet is in the global RS->BUF before this function | |
12016 | is called, and the answer is there when we return. | |
12017 | ||
12018 | COMMAND_BYTES is the length of the request to send, which may include | |
12019 | binary data. WHICH_PACKET is the packet configuration to check | |
12020 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
12021 | is set to the error number and -1 is returned. Otherwise the value | |
12022 | returned by the function is returned. | |
12023 | ||
12024 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
12025 | attachment is expected; an error will be reported if there's a | |
12026 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
12027 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
12028 | attachment's length. */ | |
12029 | ||
6b8edb51 PA |
12030 | int |
12031 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
12032 | int *remote_errno, char **attachment, | |
12033 | int *attachment_len) | |
a6b151f1 DJ |
12034 | { |
12035 | struct remote_state *rs = get_remote_state (); | |
12036 | int ret, bytes_read; | |
12037 | char *attachment_tmp; | |
12038 | ||
20db9c52 | 12039 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
12040 | { |
12041 | *remote_errno = FILEIO_ENOSYS; | |
12042 | return -1; | |
12043 | } | |
12044 | ||
8d64371b TT |
12045 | putpkt_binary (rs->buf.data (), command_bytes); |
12046 | bytes_read = getpkt_sane (&rs->buf, 0); | |
a6b151f1 DJ |
12047 | |
12048 | /* If it timed out, something is wrong. Don't try to parse the | |
12049 | buffer. */ | |
12050 | if (bytes_read < 0) | |
12051 | { | |
12052 | *remote_errno = FILEIO_EINVAL; | |
12053 | return -1; | |
12054 | } | |
12055 | ||
12056 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
12057 | { | |
12058 | case PACKET_ERROR: | |
12059 | *remote_errno = FILEIO_EINVAL; | |
12060 | return -1; | |
12061 | case PACKET_UNKNOWN: | |
12062 | *remote_errno = FILEIO_ENOSYS; | |
12063 | return -1; | |
12064 | case PACKET_OK: | |
12065 | break; | |
12066 | } | |
12067 | ||
8d64371b | 12068 | if (remote_hostio_parse_result (rs->buf.data (), &ret, remote_errno, |
a6b151f1 DJ |
12069 | &attachment_tmp)) |
12070 | { | |
12071 | *remote_errno = FILEIO_EINVAL; | |
12072 | return -1; | |
12073 | } | |
12074 | ||
12075 | /* Make sure we saw an attachment if and only if we expected one. */ | |
12076 | if ((attachment_tmp == NULL && attachment != NULL) | |
12077 | || (attachment_tmp != NULL && attachment == NULL)) | |
12078 | { | |
12079 | *remote_errno = FILEIO_EINVAL; | |
12080 | return -1; | |
12081 | } | |
12082 | ||
12083 | /* If an attachment was found, it must point into the packet buffer; | |
12084 | work out how many bytes there were. */ | |
12085 | if (attachment_tmp != NULL) | |
12086 | { | |
12087 | *attachment = attachment_tmp; | |
8d64371b | 12088 | *attachment_len = bytes_read - (*attachment - rs->buf.data ()); |
a6b151f1 DJ |
12089 | } |
12090 | ||
12091 | return ret; | |
12092 | } | |
12093 | ||
dd194f6b | 12094 | /* See declaration.h. */ |
80152258 | 12095 | |
dd194f6b PA |
12096 | void |
12097 | readahead_cache::invalidate () | |
80152258 | 12098 | { |
dd194f6b | 12099 | this->fd = -1; |
80152258 PA |
12100 | } |
12101 | ||
dd194f6b | 12102 | /* See declaration.h. */ |
80152258 | 12103 | |
dd194f6b PA |
12104 | void |
12105 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 12106 | { |
dd194f6b PA |
12107 | if (this->fd == fd) |
12108 | this->fd = -1; | |
80152258 PA |
12109 | } |
12110 | ||
15a201c8 GB |
12111 | /* Set the filesystem remote_hostio functions that take FILENAME |
12112 | arguments will use. Return 0 on success, or -1 if an error | |
12113 | occurs (and set *REMOTE_ERRNO). */ | |
12114 | ||
6b8edb51 PA |
12115 | int |
12116 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
12117 | int *remote_errno) | |
15a201c8 GB |
12118 | { |
12119 | struct remote_state *rs = get_remote_state (); | |
12120 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
8d64371b | 12121 | char *p = rs->buf.data (); |
15a201c8 GB |
12122 | int left = get_remote_packet_size () - 1; |
12123 | char arg[9]; | |
12124 | int ret; | |
12125 | ||
12126 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
12127 | return 0; | |
12128 | ||
12129 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
12130 | return 0; | |
12131 | ||
12132 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
12133 | ||
12134 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
12135 | remote_buffer_add_string (&p, &left, arg); | |
12136 | ||
8d64371b | 12137 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_setfs, |
15a201c8 GB |
12138 | remote_errno, NULL, NULL); |
12139 | ||
12140 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
12141 | return 0; | |
12142 | ||
12143 | if (ret == 0) | |
12144 | rs->fs_pid = required_pid; | |
12145 | ||
12146 | return ret; | |
12147 | } | |
12148 | ||
12e2a5fd | 12149 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 12150 | |
6b8edb51 PA |
12151 | int |
12152 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
12153 | int flags, int mode, int warn_if_slow, | |
12154 | int *remote_errno) | |
a6b151f1 DJ |
12155 | { |
12156 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12157 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12158 | int left = get_remote_packet_size () - 1; |
12159 | ||
4313b8c0 GB |
12160 | if (warn_if_slow) |
12161 | { | |
12162 | static int warning_issued = 0; | |
12163 | ||
12164 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
12165 | filename); | |
12166 | ||
12167 | if (!warning_issued) | |
12168 | { | |
12169 | warning (_("File transfers from remote targets can be slow." | |
12170 | " Use \"set sysroot\" to access files locally" | |
12171 | " instead.")); | |
12172 | warning_issued = 1; | |
12173 | } | |
12174 | } | |
12175 | ||
15a201c8 GB |
12176 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12177 | return -1; | |
12178 | ||
a6b151f1 DJ |
12179 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
12180 | ||
12181 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12182 | strlen (filename)); | |
12183 | remote_buffer_add_string (&p, &left, ","); | |
12184 | ||
12185 | remote_buffer_add_int (&p, &left, flags); | |
12186 | remote_buffer_add_string (&p, &left, ","); | |
12187 | ||
12188 | remote_buffer_add_int (&p, &left, mode); | |
12189 | ||
8d64371b | 12190 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_open, |
a6b151f1 DJ |
12191 | remote_errno, NULL, NULL); |
12192 | } | |
12193 | ||
f6ac5f3d PA |
12194 | int |
12195 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
12196 | int flags, int mode, int warn_if_slow, | |
12197 | int *remote_errno) | |
12198 | { | |
6b8edb51 | 12199 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
12200 | remote_errno); |
12201 | } | |
12202 | ||
12e2a5fd | 12203 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 12204 | |
6b8edb51 PA |
12205 | int |
12206 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12207 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12208 | { |
12209 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12210 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12211 | int left = get_remote_packet_size (); |
12212 | int out_len; | |
12213 | ||
dd194f6b | 12214 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12215 | |
a6b151f1 DJ |
12216 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
12217 | ||
12218 | remote_buffer_add_int (&p, &left, fd); | |
12219 | remote_buffer_add_string (&p, &left, ","); | |
12220 | ||
12221 | remote_buffer_add_int (&p, &left, offset); | |
12222 | remote_buffer_add_string (&p, &left, ","); | |
12223 | ||
124e13d9 | 12224 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
8d64371b TT |
12225 | (get_remote_packet_size () |
12226 | - (p - rs->buf.data ()))); | |
a6b151f1 | 12227 | |
8d64371b | 12228 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pwrite, |
a6b151f1 DJ |
12229 | remote_errno, NULL, NULL); |
12230 | } | |
12231 | ||
f6ac5f3d PA |
12232 | int |
12233 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
12234 | ULONGEST offset, int *remote_errno) | |
12235 | { | |
6b8edb51 | 12236 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12237 | } |
12238 | ||
80152258 PA |
12239 | /* Helper for the implementation of to_fileio_pread. Read the file |
12240 | from the remote side with vFile:pread. */ | |
a6b151f1 | 12241 | |
6b8edb51 PA |
12242 | int |
12243 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
12244 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
12245 | { |
12246 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12247 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12248 | char *attachment; |
12249 | int left = get_remote_packet_size (); | |
12250 | int ret, attachment_len; | |
12251 | int read_len; | |
12252 | ||
12253 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
12254 | ||
12255 | remote_buffer_add_int (&p, &left, fd); | |
12256 | remote_buffer_add_string (&p, &left, ","); | |
12257 | ||
12258 | remote_buffer_add_int (&p, &left, len); | |
12259 | remote_buffer_add_string (&p, &left, ","); | |
12260 | ||
12261 | remote_buffer_add_int (&p, &left, offset); | |
12262 | ||
8d64371b | 12263 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pread, |
a6b151f1 DJ |
12264 | remote_errno, &attachment, |
12265 | &attachment_len); | |
12266 | ||
12267 | if (ret < 0) | |
12268 | return ret; | |
12269 | ||
bc20a4af | 12270 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
12271 | read_buf, len); |
12272 | if (read_len != ret) | |
12273 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
12274 | ||
12275 | return ret; | |
12276 | } | |
12277 | ||
dd194f6b | 12278 | /* See declaration.h. */ |
80152258 | 12279 | |
dd194f6b PA |
12280 | int |
12281 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
12282 | ULONGEST offset) | |
80152258 | 12283 | { |
dd194f6b PA |
12284 | if (this->fd == fd |
12285 | && this->offset <= offset | |
12286 | && offset < this->offset + this->bufsize) | |
80152258 | 12287 | { |
dd194f6b | 12288 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
12289 | |
12290 | if (offset + len > max) | |
12291 | len = max - offset; | |
12292 | ||
dd194f6b | 12293 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
12294 | return len; |
12295 | } | |
12296 | ||
12297 | return 0; | |
12298 | } | |
12299 | ||
12300 | /* Implementation of to_fileio_pread. */ | |
12301 | ||
6b8edb51 PA |
12302 | int |
12303 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
12304 | ULONGEST offset, int *remote_errno) | |
80152258 PA |
12305 | { |
12306 | int ret; | |
12307 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12308 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12309 | |
dd194f6b | 12310 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12311 | if (ret > 0) |
12312 | { | |
12313 | cache->hit_count++; | |
12314 | ||
12315 | if (remote_debug) | |
12316 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
12317 | pulongest (cache->hit_count)); | |
12318 | return ret; | |
12319 | } | |
12320 | ||
12321 | cache->miss_count++; | |
12322 | if (remote_debug) | |
12323 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
12324 | pulongest (cache->miss_count)); | |
12325 | ||
12326 | cache->fd = fd; | |
12327 | cache->offset = offset; | |
12328 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 12329 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 | 12330 | |
6b8edb51 | 12331 | ret = remote_hostio_pread_vFile (cache->fd, cache->buf, cache->bufsize, |
80152258 PA |
12332 | cache->offset, remote_errno); |
12333 | if (ret <= 0) | |
12334 | { | |
dd194f6b | 12335 | cache->invalidate_fd (fd); |
80152258 PA |
12336 | return ret; |
12337 | } | |
12338 | ||
12339 | cache->bufsize = ret; | |
dd194f6b | 12340 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12341 | } |
12342 | ||
f6ac5f3d PA |
12343 | int |
12344 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
12345 | ULONGEST offset, int *remote_errno) | |
12346 | { | |
6b8edb51 | 12347 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12348 | } |
12349 | ||
12e2a5fd | 12350 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12351 | |
6b8edb51 PA |
12352 | int |
12353 | remote_target::remote_hostio_close (int fd, int *remote_errno) | |
a6b151f1 DJ |
12354 | { |
12355 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12356 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12357 | int left = get_remote_packet_size () - 1; |
12358 | ||
dd194f6b | 12359 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12360 | |
a6b151f1 DJ |
12361 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12362 | ||
12363 | remote_buffer_add_int (&p, &left, fd); | |
12364 | ||
8d64371b | 12365 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_close, |
a6b151f1 DJ |
12366 | remote_errno, NULL, NULL); |
12367 | } | |
12368 | ||
f6ac5f3d PA |
12369 | int |
12370 | remote_target::fileio_close (int fd, int *remote_errno) | |
12371 | { | |
6b8edb51 | 12372 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12373 | } |
12374 | ||
12e2a5fd | 12375 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12376 | |
6b8edb51 PA |
12377 | int |
12378 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
12379 | int *remote_errno) | |
a6b151f1 DJ |
12380 | { |
12381 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12382 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12383 | int left = get_remote_packet_size () - 1; |
12384 | ||
15a201c8 GB |
12385 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12386 | return -1; | |
12387 | ||
a6b151f1 DJ |
12388 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12389 | ||
12390 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12391 | strlen (filename)); | |
12392 | ||
8d64371b | 12393 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_unlink, |
a6b151f1 DJ |
12394 | remote_errno, NULL, NULL); |
12395 | } | |
12396 | ||
f6ac5f3d PA |
12397 | int |
12398 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
12399 | int *remote_errno) | |
12400 | { | |
6b8edb51 | 12401 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12402 | } |
12403 | ||
12e2a5fd | 12404 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12405 | |
f6ac5f3d PA |
12406 | gdb::optional<std::string> |
12407 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
12408 | int *remote_errno) | |
b9e7b9c3 UW |
12409 | { |
12410 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12411 | char *p = rs->buf.data (); |
b9e7b9c3 UW |
12412 | char *attachment; |
12413 | int left = get_remote_packet_size (); | |
12414 | int len, attachment_len; | |
12415 | int read_len; | |
b9e7b9c3 | 12416 | |
15a201c8 | 12417 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12418 | return {}; |
15a201c8 | 12419 | |
b9e7b9c3 UW |
12420 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12421 | ||
12422 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12423 | strlen (filename)); | |
12424 | ||
8d64371b | 12425 | len = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_readlink, |
b9e7b9c3 UW |
12426 | remote_errno, &attachment, |
12427 | &attachment_len); | |
12428 | ||
12429 | if (len < 0) | |
e0d3522b | 12430 | return {}; |
b9e7b9c3 | 12431 | |
e0d3522b | 12432 | std::string ret (len, '\0'); |
b9e7b9c3 | 12433 | |
bc20a4af | 12434 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12435 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12436 | if (read_len != len) |
12437 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12438 | ||
b9e7b9c3 UW |
12439 | return ret; |
12440 | } | |
12441 | ||
12e2a5fd | 12442 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12443 | |
f6ac5f3d PA |
12444 | int |
12445 | remote_target::fileio_fstat (int fd, struct stat *st, int *remote_errno) | |
0a93529c GB |
12446 | { |
12447 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12448 | char *p = rs->buf.data (); |
0a93529c GB |
12449 | int left = get_remote_packet_size (); |
12450 | int attachment_len, ret; | |
12451 | char *attachment; | |
12452 | struct fio_stat fst; | |
12453 | int read_len; | |
12454 | ||
464b0089 GB |
12455 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12456 | ||
12457 | remote_buffer_add_int (&p, &left, fd); | |
12458 | ||
8d64371b | 12459 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_fstat, |
464b0089 GB |
12460 | remote_errno, &attachment, |
12461 | &attachment_len); | |
12462 | if (ret < 0) | |
0a93529c | 12463 | { |
464b0089 GB |
12464 | if (*remote_errno != FILEIO_ENOSYS) |
12465 | return ret; | |
12466 | ||
0a93529c GB |
12467 | /* Strictly we should return -1, ENOSYS here, but when |
12468 | "set sysroot remote:" was implemented in August 2008 | |
12469 | BFD's need for a stat function was sidestepped with | |
12470 | this hack. This was not remedied until March 2015 | |
12471 | so we retain the previous behavior to avoid breaking | |
12472 | compatibility. | |
12473 | ||
12474 | Note that the memset is a March 2015 addition; older | |
12475 | GDBs set st_size *and nothing else* so the structure | |
12476 | would have garbage in all other fields. This might | |
12477 | break something but retaining the previous behavior | |
12478 | here would be just too wrong. */ | |
12479 | ||
12480 | memset (st, 0, sizeof (struct stat)); | |
12481 | st->st_size = INT_MAX; | |
12482 | return 0; | |
12483 | } | |
12484 | ||
0a93529c GB |
12485 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12486 | (gdb_byte *) &fst, sizeof (fst)); | |
12487 | ||
12488 | if (read_len != ret) | |
12489 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12490 | ||
12491 | if (read_len != sizeof (fst)) | |
12492 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12493 | read_len, (int) sizeof (fst)); | |
12494 | ||
12495 | remote_fileio_to_host_stat (&fst, st); | |
12496 | ||
12497 | return 0; | |
12498 | } | |
12499 | ||
12e2a5fd | 12500 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12501 | |
57810aa7 | 12502 | bool |
f6ac5f3d | 12503 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12504 | { |
12505 | /* Valgrind GDB presents itself as a remote target but works | |
12506 | on the local filesystem: it does not implement remote get | |
12507 | and users are not expected to set a sysroot. To handle | |
12508 | this case we treat the remote filesystem as local if the | |
12509 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12510 | does not support vFile:open. */ | |
a3be80c3 | 12511 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
12512 | { |
12513 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12514 | ||
12515 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12516 | { | |
12517 | int fd, remote_errno; | |
12518 | ||
12519 | /* Try opening a file to probe support. The supplied | |
12520 | filename is irrelevant, we only care about whether | |
12521 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12522 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12523 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12524 | &remote_errno); |
12525 | ||
12526 | if (fd >= 0) | |
6b8edb51 | 12527 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 GB |
12528 | |
12529 | ps = packet_support (PACKET_vFile_open); | |
12530 | } | |
12531 | ||
12532 | if (ps == PACKET_DISABLE) | |
12533 | { | |
12534 | static int warning_issued = 0; | |
12535 | ||
12536 | if (!warning_issued) | |
12537 | { | |
12538 | warning (_("remote target does not support file" | |
12539 | " transfer, attempting to access files" | |
12540 | " from local filesystem.")); | |
12541 | warning_issued = 1; | |
12542 | } | |
12543 | ||
57810aa7 | 12544 | return true; |
e3dd7556 GB |
12545 | } |
12546 | } | |
12547 | ||
57810aa7 | 12548 | return false; |
e3dd7556 GB |
12549 | } |
12550 | ||
a6b151f1 DJ |
12551 | static int |
12552 | remote_fileio_errno_to_host (int errnum) | |
12553 | { | |
12554 | switch (errnum) | |
12555 | { | |
12556 | case FILEIO_EPERM: | |
dda83cd7 | 12557 | return EPERM; |
a6b151f1 | 12558 | case FILEIO_ENOENT: |
dda83cd7 | 12559 | return ENOENT; |
a6b151f1 | 12560 | case FILEIO_EINTR: |
dda83cd7 | 12561 | return EINTR; |
a6b151f1 | 12562 | case FILEIO_EIO: |
dda83cd7 | 12563 | return EIO; |
a6b151f1 | 12564 | case FILEIO_EBADF: |
dda83cd7 | 12565 | return EBADF; |
a6b151f1 | 12566 | case FILEIO_EACCES: |
dda83cd7 | 12567 | return EACCES; |
a6b151f1 | 12568 | case FILEIO_EFAULT: |
dda83cd7 | 12569 | return EFAULT; |
a6b151f1 | 12570 | case FILEIO_EBUSY: |
dda83cd7 | 12571 | return EBUSY; |
a6b151f1 | 12572 | case FILEIO_EEXIST: |
dda83cd7 | 12573 | return EEXIST; |
a6b151f1 | 12574 | case FILEIO_ENODEV: |
dda83cd7 | 12575 | return ENODEV; |
a6b151f1 | 12576 | case FILEIO_ENOTDIR: |
dda83cd7 | 12577 | return ENOTDIR; |
a6b151f1 | 12578 | case FILEIO_EISDIR: |
dda83cd7 | 12579 | return EISDIR; |
a6b151f1 | 12580 | case FILEIO_EINVAL: |
dda83cd7 | 12581 | return EINVAL; |
a6b151f1 | 12582 | case FILEIO_ENFILE: |
dda83cd7 | 12583 | return ENFILE; |
a6b151f1 | 12584 | case FILEIO_EMFILE: |
dda83cd7 | 12585 | return EMFILE; |
a6b151f1 | 12586 | case FILEIO_EFBIG: |
dda83cd7 | 12587 | return EFBIG; |
a6b151f1 | 12588 | case FILEIO_ENOSPC: |
dda83cd7 | 12589 | return ENOSPC; |
a6b151f1 | 12590 | case FILEIO_ESPIPE: |
dda83cd7 | 12591 | return ESPIPE; |
a6b151f1 | 12592 | case FILEIO_EROFS: |
dda83cd7 | 12593 | return EROFS; |
a6b151f1 | 12594 | case FILEIO_ENOSYS: |
dda83cd7 | 12595 | return ENOSYS; |
a6b151f1 | 12596 | case FILEIO_ENAMETOOLONG: |
dda83cd7 | 12597 | return ENAMETOOLONG; |
a6b151f1 DJ |
12598 | } |
12599 | return -1; | |
12600 | } | |
12601 | ||
12602 | static char * | |
12603 | remote_hostio_error (int errnum) | |
12604 | { | |
12605 | int host_error = remote_fileio_errno_to_host (errnum); | |
12606 | ||
12607 | if (host_error == -1) | |
12608 | error (_("Unknown remote I/O error %d"), errnum); | |
12609 | else | |
12610 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12611 | } | |
12612 | ||
440b7aec PA |
12613 | /* A RAII wrapper around a remote file descriptor. */ |
12614 | ||
12615 | class scoped_remote_fd | |
a6b151f1 | 12616 | { |
440b7aec | 12617 | public: |
6b8edb51 PA |
12618 | scoped_remote_fd (remote_target *remote, int fd) |
12619 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12620 | { |
12621 | } | |
a6b151f1 | 12622 | |
440b7aec PA |
12623 | ~scoped_remote_fd () |
12624 | { | |
12625 | if (m_fd != -1) | |
12626 | { | |
12627 | try | |
12628 | { | |
12629 | int remote_errno; | |
6b8edb51 | 12630 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12631 | } |
12632 | catch (...) | |
12633 | { | |
12634 | /* Swallow exception before it escapes the dtor. If | |
12635 | something goes wrong, likely the connection is gone, | |
12636 | and there's nothing else that can be done. */ | |
12637 | } | |
12638 | } | |
12639 | } | |
12640 | ||
12641 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12642 | ||
12643 | /* Release ownership of the file descriptor, and return it. */ | |
88a774b9 | 12644 | ATTRIBUTE_UNUSED_RESULT int release () noexcept |
440b7aec PA |
12645 | { |
12646 | int fd = m_fd; | |
12647 | m_fd = -1; | |
12648 | return fd; | |
12649 | } | |
12650 | ||
12651 | /* Return the owned file descriptor. */ | |
12652 | int get () const noexcept | |
12653 | { | |
12654 | return m_fd; | |
12655 | } | |
12656 | ||
12657 | private: | |
6b8edb51 PA |
12658 | /* The remote target. */ |
12659 | remote_target *m_remote; | |
12660 | ||
440b7aec PA |
12661 | /* The owned remote I/O file descriptor. */ |
12662 | int m_fd; | |
12663 | }; | |
a6b151f1 DJ |
12664 | |
12665 | void | |
12666 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12667 | { |
12668 | remote_target *remote = get_current_remote_target (); | |
12669 | ||
12670 | if (remote == nullptr) | |
12671 | error (_("command can only be used with remote target")); | |
12672 | ||
12673 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12674 | } | |
12675 | ||
12676 | void | |
12677 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12678 | int from_tty) | |
a6b151f1 | 12679 | { |
440b7aec | 12680 | int retcode, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12681 | int bytes_in_buffer; |
12682 | int saw_eof; | |
12683 | ULONGEST offset; | |
a6b151f1 | 12684 | |
d419f42d | 12685 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12686 | if (file == NULL) |
12687 | perror_with_name (local_file); | |
a6b151f1 | 12688 | |
440b7aec | 12689 | scoped_remote_fd fd |
6b8edb51 PA |
12690 | (this, remote_hostio_open (NULL, |
12691 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12692 | | FILEIO_O_TRUNC), | |
12693 | 0700, 0, &remote_errno)); | |
440b7aec | 12694 | if (fd.get () == -1) |
a6b151f1 DJ |
12695 | remote_hostio_error (remote_errno); |
12696 | ||
12697 | /* Send up to this many bytes at once. They won't all fit in the | |
12698 | remote packet limit, so we'll transfer slightly fewer. */ | |
12699 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12700 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12701 | |
a6b151f1 DJ |
12702 | bytes_in_buffer = 0; |
12703 | saw_eof = 0; | |
12704 | offset = 0; | |
12705 | while (bytes_in_buffer || !saw_eof) | |
12706 | { | |
12707 | if (!saw_eof) | |
12708 | { | |
5ca3b260 | 12709 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12710 | io_size - bytes_in_buffer, |
d419f42d | 12711 | file.get ()); |
a6b151f1 DJ |
12712 | if (bytes == 0) |
12713 | { | |
d419f42d | 12714 | if (ferror (file.get ())) |
a6b151f1 DJ |
12715 | error (_("Error reading %s."), local_file); |
12716 | else | |
12717 | { | |
12718 | /* EOF. Unless there is something still in the | |
12719 | buffer from the last iteration, we are done. */ | |
12720 | saw_eof = 1; | |
12721 | if (bytes_in_buffer == 0) | |
12722 | break; | |
12723 | } | |
12724 | } | |
12725 | } | |
12726 | else | |
12727 | bytes = 0; | |
12728 | ||
12729 | bytes += bytes_in_buffer; | |
12730 | bytes_in_buffer = 0; | |
12731 | ||
5ca3b260 | 12732 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 12733 | offset, &remote_errno); |
a6b151f1 DJ |
12734 | |
12735 | if (retcode < 0) | |
12736 | remote_hostio_error (remote_errno); | |
12737 | else if (retcode == 0) | |
12738 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12739 | else if (retcode < bytes) | |
12740 | { | |
12741 | /* Short write. Save the rest of the read data for the next | |
12742 | write. */ | |
12743 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 12744 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
12745 | } |
12746 | ||
12747 | offset += retcode; | |
12748 | } | |
12749 | ||
6b8edb51 | 12750 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12751 | remote_hostio_error (remote_errno); |
12752 | ||
12753 | if (from_tty) | |
12754 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
a6b151f1 DJ |
12755 | } |
12756 | ||
12757 | void | |
12758 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
12759 | { |
12760 | remote_target *remote = get_current_remote_target (); | |
12761 | ||
12762 | if (remote == nullptr) | |
12763 | error (_("command can only be used with remote target")); | |
12764 | ||
12765 | remote->remote_file_get (remote_file, local_file, from_tty); | |
12766 | } | |
12767 | ||
12768 | void | |
12769 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
12770 | int from_tty) | |
a6b151f1 | 12771 | { |
440b7aec | 12772 | int remote_errno, bytes, io_size; |
a6b151f1 | 12773 | ULONGEST offset; |
a6b151f1 | 12774 | |
440b7aec | 12775 | scoped_remote_fd fd |
6b8edb51 PA |
12776 | (this, remote_hostio_open (NULL, |
12777 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12778 | &remote_errno)); | |
440b7aec | 12779 | if (fd.get () == -1) |
a6b151f1 DJ |
12780 | remote_hostio_error (remote_errno); |
12781 | ||
d419f42d | 12782 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12783 | if (file == NULL) |
12784 | perror_with_name (local_file); | |
a6b151f1 DJ |
12785 | |
12786 | /* Send up to this many bytes at once. They won't all fit in the | |
12787 | remote packet limit, so we'll transfer slightly fewer. */ | |
12788 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12789 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12790 | |
a6b151f1 DJ |
12791 | offset = 0; |
12792 | while (1) | |
12793 | { | |
5ca3b260 | 12794 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 12795 | &remote_errno); |
a6b151f1 DJ |
12796 | if (bytes == 0) |
12797 | /* Success, but no bytes, means end-of-file. */ | |
12798 | break; | |
12799 | if (bytes == -1) | |
12800 | remote_hostio_error (remote_errno); | |
12801 | ||
12802 | offset += bytes; | |
12803 | ||
5ca3b260 | 12804 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
12805 | if (bytes == 0) |
12806 | perror_with_name (local_file); | |
12807 | } | |
12808 | ||
6b8edb51 | 12809 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12810 | remote_hostio_error (remote_errno); |
12811 | ||
12812 | if (from_tty) | |
12813 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
a6b151f1 DJ |
12814 | } |
12815 | ||
12816 | void | |
12817 | remote_file_delete (const char *remote_file, int from_tty) | |
12818 | { | |
6b8edb51 | 12819 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 12820 | |
6b8edb51 | 12821 | if (remote == nullptr) |
a6b151f1 DJ |
12822 | error (_("command can only be used with remote target")); |
12823 | ||
6b8edb51 PA |
12824 | remote->remote_file_delete (remote_file, from_tty); |
12825 | } | |
12826 | ||
12827 | void | |
12828 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
12829 | { | |
12830 | int retcode, remote_errno; | |
12831 | ||
12832 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
12833 | if (retcode == -1) |
12834 | remote_hostio_error (remote_errno); | |
12835 | ||
12836 | if (from_tty) | |
12837 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12838 | } | |
12839 | ||
12840 | static void | |
ac88e2de | 12841 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12842 | { |
d1a41061 PP |
12843 | if (args == NULL) |
12844 | error_no_arg (_("file to put")); | |
12845 | ||
773a1edc | 12846 | gdb_argv argv (args); |
a6b151f1 DJ |
12847 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12848 | error (_("Invalid parameters to remote put")); | |
12849 | ||
12850 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12851 | } |
12852 | ||
12853 | static void | |
ac88e2de | 12854 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12855 | { |
d1a41061 PP |
12856 | if (args == NULL) |
12857 | error_no_arg (_("file to get")); | |
12858 | ||
773a1edc | 12859 | gdb_argv argv (args); |
a6b151f1 DJ |
12860 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12861 | error (_("Invalid parameters to remote get")); | |
12862 | ||
12863 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12864 | } |
12865 | ||
12866 | static void | |
ac88e2de | 12867 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12868 | { |
d1a41061 PP |
12869 | if (args == NULL) |
12870 | error_no_arg (_("file to delete")); | |
12871 | ||
773a1edc | 12872 | gdb_argv argv (args); |
a6b151f1 DJ |
12873 | if (argv[0] == NULL || argv[1] != NULL) |
12874 | error (_("Invalid parameters to remote delete")); | |
12875 | ||
12876 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12877 | } |
12878 | ||
57810aa7 | 12879 | bool |
f6ac5f3d | 12880 | remote_target::can_execute_reverse () |
b2175913 | 12881 | { |
4082afcc PA |
12882 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12883 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 12884 | return true; |
40ab02ce | 12885 | else |
57810aa7 | 12886 | return false; |
b2175913 MS |
12887 | } |
12888 | ||
57810aa7 | 12889 | bool |
f6ac5f3d | 12890 | remote_target::supports_non_stop () |
74531fed | 12891 | { |
57810aa7 | 12892 | return true; |
74531fed PA |
12893 | } |
12894 | ||
57810aa7 | 12895 | bool |
f6ac5f3d | 12896 | remote_target::supports_disable_randomization () |
03583c20 UW |
12897 | { |
12898 | /* Only supported in extended mode. */ | |
57810aa7 | 12899 | return false; |
03583c20 UW |
12900 | } |
12901 | ||
57810aa7 | 12902 | bool |
f6ac5f3d | 12903 | remote_target::supports_multi_process () |
8a305172 PA |
12904 | { |
12905 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12906 | |
8020350c | 12907 | return remote_multi_process_p (rs); |
8a305172 PA |
12908 | } |
12909 | ||
70221824 | 12910 | static int |
f6ac5f3d | 12911 | remote_supports_cond_tracepoints () |
782b2b07 | 12912 | { |
4082afcc | 12913 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12914 | } |
12915 | ||
57810aa7 | 12916 | bool |
f6ac5f3d | 12917 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 12918 | { |
4082afcc | 12919 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12920 | } |
12921 | ||
70221824 | 12922 | static int |
f6ac5f3d | 12923 | remote_supports_fast_tracepoints () |
7a697b8d | 12924 | { |
4082afcc | 12925 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12926 | } |
12927 | ||
0fb4aa4b | 12928 | static int |
f6ac5f3d | 12929 | remote_supports_static_tracepoints () |
0fb4aa4b | 12930 | { |
4082afcc | 12931 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12932 | } |
12933 | ||
1e4d1764 | 12934 | static int |
f6ac5f3d | 12935 | remote_supports_install_in_trace () |
1e4d1764 | 12936 | { |
4082afcc | 12937 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12938 | } |
12939 | ||
57810aa7 | 12940 | bool |
f6ac5f3d | 12941 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 12942 | { |
4082afcc PA |
12943 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12944 | == PACKET_ENABLE); | |
d248b706 KY |
12945 | } |
12946 | ||
57810aa7 | 12947 | bool |
f6ac5f3d | 12948 | remote_target::supports_string_tracing () |
3065dfb6 | 12949 | { |
4082afcc | 12950 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12951 | } |
12952 | ||
57810aa7 | 12953 | bool |
f6ac5f3d | 12954 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 12955 | { |
4082afcc | 12956 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12957 | } |
12958 | ||
f6ac5f3d PA |
12959 | void |
12960 | remote_target::trace_init () | |
35b1e5cc | 12961 | { |
b6bb3468 PA |
12962 | struct remote_state *rs = get_remote_state (); |
12963 | ||
35b1e5cc | 12964 | putpkt ("QTinit"); |
b6bb3468 | 12965 | remote_get_noisy_reply (); |
8d64371b | 12966 | if (strcmp (rs->buf.data (), "OK") != 0) |
35b1e5cc SS |
12967 | error (_("Target does not support this command.")); |
12968 | } | |
12969 | ||
409873ef SS |
12970 | /* Recursive routine to walk through command list including loops, and |
12971 | download packets for each command. */ | |
12972 | ||
6b8edb51 PA |
12973 | void |
12974 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
12975 | struct command_line *cmds) | |
409873ef SS |
12976 | { |
12977 | struct remote_state *rs = get_remote_state (); | |
12978 | struct command_line *cmd; | |
12979 | ||
12980 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12981 | { | |
0df8b418 | 12982 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 12983 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 12984 | encode_source_string (num, addr, "cmd", cmd->line, |
8d64371b TT |
12985 | rs->buf.data () + strlen (rs->buf.data ()), |
12986 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 12987 | putpkt (rs->buf); |
b6bb3468 | 12988 | remote_get_noisy_reply (); |
8d64371b | 12989 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
12990 | warning (_("Target does not support source download.")); |
12991 | ||
12992 | if (cmd->control_type == while_control | |
12993 | || cmd->control_type == while_stepping_control) | |
12994 | { | |
12973681 | 12995 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 12996 | |
0df8b418 | 12997 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 12998 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 12999 | encode_source_string (num, addr, "cmd", "end", |
8d64371b TT |
13000 | rs->buf.data () + strlen (rs->buf.data ()), |
13001 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 13002 | putpkt (rs->buf); |
b6bb3468 | 13003 | remote_get_noisy_reply (); |
8d64371b | 13004 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
13005 | warning (_("Target does not support source download.")); |
13006 | } | |
13007 | } | |
13008 | } | |
13009 | ||
f6ac5f3d PA |
13010 | void |
13011 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc SS |
13012 | { |
13013 | CORE_ADDR tpaddr; | |
409873ef | 13014 | char addrbuf[40]; |
b44ec619 SM |
13015 | std::vector<std::string> tdp_actions; |
13016 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 13017 | char *pkt; |
e8ba3115 | 13018 | struct breakpoint *b = loc->owner; |
d9b3f62e | 13019 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 13020 | struct remote_state *rs = get_remote_state (); |
3df3a985 | 13021 | int ret; |
ff36536c | 13022 | const char *err_msg = _("Tracepoint packet too large for target."); |
3df3a985 PFC |
13023 | size_t size_left; |
13024 | ||
13025 | /* We use a buffer other than rs->buf because we'll build strings | |
13026 | across multiple statements, and other statements in between could | |
13027 | modify rs->buf. */ | |
13028 | gdb::char_vector buf (get_remote_packet_size ()); | |
35b1e5cc | 13029 | |
dc673c81 | 13030 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
13031 | |
13032 | tpaddr = loc->address; | |
53807e9f | 13033 | strcpy (addrbuf, phex (tpaddr, sizeof (CORE_ADDR))); |
3df3a985 PFC |
13034 | ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x", |
13035 | b->number, addrbuf, /* address */ | |
13036 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
13037 | t->step_count, t->pass_count); | |
13038 | ||
13039 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13040 | error ("%s", err_msg); |
3df3a985 | 13041 | |
e8ba3115 YQ |
13042 | /* Fast tracepoints are mostly handled by the target, but we can |
13043 | tell the target how big of an instruction block should be moved | |
13044 | around. */ | |
13045 | if (b->type == bp_fast_tracepoint) | |
13046 | { | |
13047 | /* Only test for support at download time; we may not know | |
13048 | target capabilities at definition time. */ | |
13049 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 13050 | { |
6b940e6a PL |
13051 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
13052 | NULL)) | |
3df3a985 PFC |
13053 | { |
13054 | size_left = buf.size () - strlen (buf.data ()); | |
13055 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13056 | size_left, ":F%x", | |
13057 | gdb_insn_length (loc->gdbarch, tpaddr)); | |
13058 | ||
13059 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13060 | error ("%s", err_msg); |
3df3a985 | 13061 | } |
35b1e5cc | 13062 | else |
e8ba3115 YQ |
13063 | /* If it passed validation at definition but fails now, |
13064 | something is very wrong. */ | |
13065 | internal_error (__FILE__, __LINE__, | |
13066 | _("Fast tracepoint not " | |
13067 | "valid during download")); | |
35b1e5cc | 13068 | } |
e8ba3115 YQ |
13069 | else |
13070 | /* Fast tracepoints are functionally identical to regular | |
13071 | tracepoints, so don't take lack of support as a reason to | |
13072 | give up on the trace run. */ | |
13073 | warning (_("Target does not support fast tracepoints, " | |
13074 | "downloading %d as regular tracepoint"), b->number); | |
13075 | } | |
13076 | else if (b->type == bp_static_tracepoint) | |
13077 | { | |
13078 | /* Only test for support at download time; we may not know | |
13079 | target capabilities at definition time. */ | |
13080 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 13081 | { |
e8ba3115 | 13082 | struct static_tracepoint_marker marker; |
0fb4aa4b | 13083 | |
e8ba3115 | 13084 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
3df3a985 PFC |
13085 | { |
13086 | size_left = buf.size () - strlen (buf.data ()); | |
13087 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13088 | size_left, ":S"); | |
13089 | ||
13090 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13091 | error ("%s", err_msg); |
3df3a985 | 13092 | } |
0fb4aa4b | 13093 | else |
e8ba3115 | 13094 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 13095 | } |
e8ba3115 YQ |
13096 | else |
13097 | /* Fast tracepoints are functionally identical to regular | |
13098 | tracepoints, so don't take lack of support as a reason | |
13099 | to give up on the trace run. */ | |
13100 | error (_("Target does not support static tracepoints")); | |
13101 | } | |
13102 | /* If the tracepoint has a conditional, make it into an agent | |
13103 | expression and append to the definition. */ | |
13104 | if (loc->cond) | |
13105 | { | |
13106 | /* Only test support at download time, we may not know target | |
13107 | capabilities at definition time. */ | |
13108 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 13109 | { |
3df3a985 PFC |
13110 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, |
13111 | loc->cond.get ()); | |
13112 | ||
13113 | size_left = buf.size () - strlen (buf.data ()); | |
13114 | ||
13115 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13116 | size_left, ":X%x,", aexpr->len); | |
13117 | ||
13118 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13119 | error ("%s", err_msg); |
3df3a985 PFC |
13120 | |
13121 | size_left = buf.size () - strlen (buf.data ()); | |
13122 | ||
13123 | /* Two bytes to encode each aexpr byte, plus the terminating | |
13124 | null byte. */ | |
13125 | if (aexpr->len * 2 + 1 > size_left) | |
a7f25a84 | 13126 | error ("%s", err_msg); |
3df3a985 PFC |
13127 | |
13128 | pkt = buf.data () + strlen (buf.data ()); | |
13129 | ||
b44ec619 | 13130 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
13131 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
13132 | *pkt = '\0'; | |
35b1e5cc | 13133 | } |
e8ba3115 YQ |
13134 | else |
13135 | warning (_("Target does not support conditional tracepoints, " | |
13136 | "ignoring tp %d cond"), b->number); | |
13137 | } | |
35b1e5cc | 13138 | |
d9b3f62e | 13139 | if (b->commands || *default_collect) |
3df3a985 PFC |
13140 | { |
13141 | size_left = buf.size () - strlen (buf.data ()); | |
13142 | ||
13143 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
13144 | size_left, "-"); | |
13145 | ||
13146 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 13147 | error ("%s", err_msg); |
3df3a985 PFC |
13148 | } |
13149 | ||
13150 | putpkt (buf.data ()); | |
b6bb3468 | 13151 | remote_get_noisy_reply (); |
8d64371b | 13152 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13153 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 13154 | |
e8ba3115 | 13155 | /* do_single_steps (t); */ |
b44ec619 SM |
13156 | for (auto action_it = tdp_actions.begin (); |
13157 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 13158 | { |
b44ec619 SM |
13159 | QUIT; /* Allow user to bail out with ^C. */ |
13160 | ||
aa6f3694 | 13161 | bool has_more = ((action_it + 1) != tdp_actions.end () |
b44ec619 SM |
13162 | || !stepping_actions.empty ()); |
13163 | ||
3df3a985 PFC |
13164 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c", |
13165 | b->number, addrbuf, /* address */ | |
13166 | action_it->c_str (), | |
13167 | has_more ? '-' : 0); | |
13168 | ||
13169 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13170 | error ("%s", err_msg); |
3df3a985 PFC |
13171 | |
13172 | putpkt (buf.data ()); | |
b44ec619 | 13173 | remote_get_noisy_reply (); |
8d64371b | 13174 | if (strcmp (rs->buf.data (), "OK")) |
b44ec619 | 13175 | error (_("Error on target while setting tracepoints.")); |
e8ba3115 | 13176 | } |
409873ef | 13177 | |
05abfc39 PFC |
13178 | for (auto action_it = stepping_actions.begin (); |
13179 | action_it != stepping_actions.end (); action_it++) | |
13180 | { | |
13181 | QUIT; /* Allow user to bail out with ^C. */ | |
13182 | ||
13183 | bool is_first = action_it == stepping_actions.begin (); | |
aa6f3694 | 13184 | bool has_more = (action_it + 1) != stepping_actions.end (); |
05abfc39 | 13185 | |
3df3a985 PFC |
13186 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s", |
13187 | b->number, addrbuf, /* address */ | |
13188 | is_first ? "S" : "", | |
13189 | action_it->c_str (), | |
13190 | has_more ? "-" : ""); | |
13191 | ||
13192 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13193 | error ("%s", err_msg); |
3df3a985 PFC |
13194 | |
13195 | putpkt (buf.data ()); | |
05abfc39 | 13196 | remote_get_noisy_reply (); |
8d64371b | 13197 | if (strcmp (rs->buf.data (), "OK")) |
05abfc39 PFC |
13198 | error (_("Error on target while setting tracepoints.")); |
13199 | } | |
b44ec619 | 13200 | |
4082afcc | 13201 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 13202 | { |
f00aae0f | 13203 | if (b->location != NULL) |
409873ef | 13204 | { |
3df3a985 PFC |
13205 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13206 | ||
13207 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13208 | error ("%s", err_msg); |
3df3a985 | 13209 | |
f00aae0f | 13210 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 13211 | event_location_to_string (b->location.get ()), |
3df3a985 PFC |
13212 | buf.data () + strlen (buf.data ()), |
13213 | buf.size () - strlen (buf.data ())); | |
13214 | putpkt (buf.data ()); | |
b6bb3468 | 13215 | remote_get_noisy_reply (); |
8d64371b | 13216 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 13217 | warning (_("Target does not support source download.")); |
409873ef | 13218 | } |
e8ba3115 YQ |
13219 | if (b->cond_string) |
13220 | { | |
3df3a985 PFC |
13221 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
13222 | ||
13223 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 13224 | error ("%s", err_msg); |
3df3a985 | 13225 | |
e8ba3115 | 13226 | encode_source_string (b->number, loc->address, |
3df3a985 PFC |
13227 | "cond", b->cond_string, |
13228 | buf.data () + strlen (buf.data ()), | |
13229 | buf.size () - strlen (buf.data ())); | |
13230 | putpkt (buf.data ()); | |
b6bb3468 | 13231 | remote_get_noisy_reply (); |
8d64371b | 13232 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 YQ |
13233 | warning (_("Target does not support source download.")); |
13234 | } | |
13235 | remote_download_command_source (b->number, loc->address, | |
13236 | breakpoint_commands (b)); | |
35b1e5cc | 13237 | } |
35b1e5cc SS |
13238 | } |
13239 | ||
57810aa7 | 13240 | bool |
f6ac5f3d | 13241 | remote_target::can_download_tracepoint () |
1e4d1764 | 13242 | { |
1e51243a PA |
13243 | struct remote_state *rs = get_remote_state (); |
13244 | struct trace_status *ts; | |
13245 | int status; | |
13246 | ||
13247 | /* Don't try to install tracepoints until we've relocated our | |
13248 | symbols, and fetched and merged the target's tracepoint list with | |
13249 | ours. */ | |
13250 | if (rs->starting_up) | |
57810aa7 | 13251 | return false; |
1e51243a PA |
13252 | |
13253 | ts = current_trace_status (); | |
f6ac5f3d | 13254 | status = get_trace_status (ts); |
1e4d1764 YQ |
13255 | |
13256 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 13257 | return false; |
1e4d1764 YQ |
13258 | |
13259 | /* If we are in a tracing experiment, but remote stub doesn't support | |
13260 | installing tracepoint in trace, we have to return. */ | |
13261 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 13262 | return false; |
1e4d1764 | 13263 | |
57810aa7 | 13264 | return true; |
1e4d1764 YQ |
13265 | } |
13266 | ||
13267 | ||
f6ac5f3d PA |
13268 | void |
13269 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
13270 | { |
13271 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 13272 | char *p; |
35b1e5cc | 13273 | |
8d64371b | 13274 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
13275 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
13276 | tsv.builtin); | |
8d64371b TT |
13277 | p = rs->buf.data () + strlen (rs->buf.data ()); |
13278 | if ((p - rs->buf.data ()) + tsv.name.length () * 2 | |
13279 | >= get_remote_packet_size ()) | |
00bf0b85 | 13280 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 13281 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 13282 | *p++ = '\0'; |
35b1e5cc | 13283 | putpkt (rs->buf); |
b6bb3468 | 13284 | remote_get_noisy_reply (); |
8d64371b | 13285 | if (rs->buf[0] == '\0') |
ad91cd99 | 13286 | error (_("Target does not support this command.")); |
8d64371b | 13287 | if (strcmp (rs->buf.data (), "OK") != 0) |
ad91cd99 | 13288 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13289 | } |
13290 | ||
f6ac5f3d PA |
13291 | void |
13292 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13293 | { |
13294 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13295 | |
8d64371b | 13296 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTEnable:%x:%s", |
53807e9f TT |
13297 | location->owner->number, |
13298 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13299 | putpkt (rs->buf); |
b6bb3468 | 13300 | remote_get_noisy_reply (); |
8d64371b | 13301 | if (rs->buf[0] == '\0') |
d248b706 | 13302 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13303 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13304 | error (_("Error on target while enabling tracepoint.")); |
13305 | } | |
13306 | ||
f6ac5f3d PA |
13307 | void |
13308 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13309 | { |
13310 | struct remote_state *rs = get_remote_state (); | |
d248b706 | 13311 | |
8d64371b | 13312 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDisable:%x:%s", |
53807e9f TT |
13313 | location->owner->number, |
13314 | phex (location->address, sizeof (CORE_ADDR))); | |
d248b706 | 13315 | putpkt (rs->buf); |
b6bb3468 | 13316 | remote_get_noisy_reply (); |
8d64371b | 13317 | if (rs->buf[0] == '\0') |
d248b706 | 13318 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13319 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13320 | error (_("Error on target while disabling tracepoint.")); |
13321 | } | |
13322 | ||
f6ac5f3d PA |
13323 | void |
13324 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13325 | { |
13326 | asection *s; | |
13327 | bfd_size_type size; | |
608bcef2 | 13328 | bfd_vma vma; |
35b1e5cc | 13329 | int anysecs = 0; |
c2fa21f1 | 13330 | int offset = 0; |
35b1e5cc | 13331 | |
7e10abd1 | 13332 | if (!current_program_space->exec_bfd ()) |
35b1e5cc SS |
13333 | return; /* No information to give. */ |
13334 | ||
b6bb3468 PA |
13335 | struct remote_state *rs = get_remote_state (); |
13336 | ||
8d64371b TT |
13337 | strcpy (rs->buf.data (), "QTro"); |
13338 | offset = strlen (rs->buf.data ()); | |
7e10abd1 | 13339 | for (s = current_program_space->exec_bfd ()->sections; s; s = s->next) |
35b1e5cc SS |
13340 | { |
13341 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13342 | int sec_length; |
35b1e5cc SS |
13343 | |
13344 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 13345 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
13346 | (s->flags & SEC_READONLY) == 0) |
13347 | continue; | |
13348 | ||
13349 | anysecs = 1; | |
fd361982 AM |
13350 | vma = bfd_section_vma (s); |
13351 | size = bfd_section_size (s); | |
608bcef2 HZ |
13352 | sprintf_vma (tmp1, vma); |
13353 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 13354 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
8d64371b | 13355 | if (offset + sec_length + 1 > rs->buf.size ()) |
c2fa21f1 | 13356 | { |
4082afcc | 13357 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 13358 | warning (_("\ |
c2fa21f1 HZ |
13359 | Too many sections for read-only sections definition packet.")); |
13360 | break; | |
13361 | } | |
8d64371b | 13362 | xsnprintf (rs->buf.data () + offset, rs->buf.size () - offset, ":%s,%s", |
bba74b36 | 13363 | tmp1, tmp2); |
c2fa21f1 | 13364 | offset += sec_length; |
35b1e5cc SS |
13365 | } |
13366 | if (anysecs) | |
13367 | { | |
b6bb3468 | 13368 | putpkt (rs->buf); |
8d64371b | 13369 | getpkt (&rs->buf, 0); |
35b1e5cc SS |
13370 | } |
13371 | } | |
13372 | ||
f6ac5f3d PA |
13373 | void |
13374 | remote_target::trace_start () | |
35b1e5cc | 13375 | { |
b6bb3468 PA |
13376 | struct remote_state *rs = get_remote_state (); |
13377 | ||
35b1e5cc | 13378 | putpkt ("QTStart"); |
b6bb3468 | 13379 | remote_get_noisy_reply (); |
8d64371b | 13380 | if (rs->buf[0] == '\0') |
ad91cd99 | 13381 | error (_("Target does not support this command.")); |
8d64371b TT |
13382 | if (strcmp (rs->buf.data (), "OK") != 0) |
13383 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13384 | } |
13385 | ||
f6ac5f3d PA |
13386 | int |
13387 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13388 | { |
953b98d1 | 13389 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13390 | char *p = NULL; |
bd3eecc3 | 13391 | enum packet_result result; |
b6bb3468 | 13392 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13393 | |
4082afcc | 13394 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13395 | return -1; |
a744cf53 | 13396 | |
7b9a15e1 | 13397 | /* FIXME we need to get register block size some other way. */ |
5cd63fda | 13398 | trace_regblock_size |
9d6eea31 | 13399 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 13400 | |
049dc89b JK |
13401 | putpkt ("qTStatus"); |
13402 | ||
a70b8144 | 13403 | try |
67f41397 | 13404 | { |
b6bb3468 | 13405 | p = remote_get_noisy_reply (); |
67f41397 | 13406 | } |
230d2906 | 13407 | catch (const gdb_exception_error &ex) |
67f41397 | 13408 | { |
598d3636 JK |
13409 | if (ex.error != TARGET_CLOSE_ERROR) |
13410 | { | |
13411 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13412 | return -1; | |
13413 | } | |
eedc3f4f | 13414 | throw; |
67f41397 | 13415 | } |
00bf0b85 | 13416 | |
bd3eecc3 PA |
13417 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
13418 | ||
00bf0b85 | 13419 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13420 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13421 | return -1; |
35b1e5cc | 13422 | |
00bf0b85 | 13423 | /* We're working with a live target. */ |
f5911ea1 | 13424 | ts->filename = NULL; |
00bf0b85 | 13425 | |
00bf0b85 | 13426 | if (*p++ != 'T') |
8d64371b | 13427 | error (_("Bogus trace status reply from target: %s"), rs->buf.data ()); |
35b1e5cc | 13428 | |
84cebc4a YQ |
13429 | /* Function 'parse_trace_status' sets default value of each field of |
13430 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13431 | parse_trace_status (p, ts); |
13432 | ||
13433 | return ts->running; | |
35b1e5cc SS |
13434 | } |
13435 | ||
f6ac5f3d PA |
13436 | void |
13437 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13438 | struct uploaded_tp *utp) | |
f196051f SS |
13439 | { |
13440 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
13441 | char *reply; |
13442 | struct bp_location *loc; | |
13443 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 13444 | size_t size = get_remote_packet_size (); |
f196051f SS |
13445 | |
13446 | if (tp) | |
13447 | { | |
c1fc2657 | 13448 | tp->hit_count = 0; |
f196051f | 13449 | tp->traceframe_usage = 0; |
c1fc2657 | 13450 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
13451 | { |
13452 | /* If the tracepoint was never downloaded, don't go asking for | |
13453 | any status. */ | |
13454 | if (tp->number_on_target == 0) | |
13455 | continue; | |
8d64371b | 13456 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", tp->number_on_target, |
bba74b36 | 13457 | phex_nz (loc->address, 0)); |
f196051f | 13458 | putpkt (rs->buf); |
b6bb3468 | 13459 | reply = remote_get_noisy_reply (); |
f196051f SS |
13460 | if (reply && *reply) |
13461 | { | |
13462 | if (*reply == 'V') | |
13463 | parse_tracepoint_status (reply + 1, bp, utp); | |
13464 | } | |
13465 | } | |
13466 | } | |
13467 | else if (utp) | |
13468 | { | |
13469 | utp->hit_count = 0; | |
13470 | utp->traceframe_usage = 0; | |
8d64371b | 13471 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", utp->number, |
bba74b36 | 13472 | phex_nz (utp->addr, 0)); |
f196051f | 13473 | putpkt (rs->buf); |
b6bb3468 | 13474 | reply = remote_get_noisy_reply (); |
f196051f SS |
13475 | if (reply && *reply) |
13476 | { | |
13477 | if (*reply == 'V') | |
13478 | parse_tracepoint_status (reply + 1, bp, utp); | |
13479 | } | |
13480 | } | |
13481 | } | |
13482 | ||
f6ac5f3d PA |
13483 | void |
13484 | remote_target::trace_stop () | |
35b1e5cc | 13485 | { |
b6bb3468 PA |
13486 | struct remote_state *rs = get_remote_state (); |
13487 | ||
35b1e5cc | 13488 | putpkt ("QTStop"); |
b6bb3468 | 13489 | remote_get_noisy_reply (); |
8d64371b | 13490 | if (rs->buf[0] == '\0') |
ad91cd99 | 13491 | error (_("Target does not support this command.")); |
8d64371b TT |
13492 | if (strcmp (rs->buf.data (), "OK") != 0) |
13493 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13494 | } |
13495 | ||
f6ac5f3d PA |
13496 | int |
13497 | remote_target::trace_find (enum trace_find_type type, int num, | |
13498 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13499 | int *tpp) | |
35b1e5cc SS |
13500 | { |
13501 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 13502 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
35b1e5cc SS |
13503 | char *p, *reply; |
13504 | int target_frameno = -1, target_tracept = -1; | |
13505 | ||
e6e4e701 PA |
13506 | /* Lookups other than by absolute frame number depend on the current |
13507 | trace selected, so make sure it is correct on the remote end | |
13508 | first. */ | |
13509 | if (type != tfind_number) | |
13510 | set_remote_traceframe (); | |
13511 | ||
8d64371b | 13512 | p = rs->buf.data (); |
35b1e5cc SS |
13513 | strcpy (p, "QTFrame:"); |
13514 | p = strchr (p, '\0'); | |
13515 | switch (type) | |
13516 | { | |
13517 | case tfind_number: | |
bba74b36 | 13518 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13519 | break; |
13520 | case tfind_pc: | |
bba74b36 | 13521 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13522 | break; |
13523 | case tfind_tp: | |
bba74b36 | 13524 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13525 | break; |
13526 | case tfind_range: | |
bba74b36 YQ |
13527 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13528 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13529 | break; |
13530 | case tfind_outside: | |
bba74b36 YQ |
13531 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13532 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13533 | break; |
13534 | default: | |
9b20d036 | 13535 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13536 | } |
13537 | ||
13538 | putpkt (rs->buf); | |
b6bb3468 | 13539 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13540 | if (*reply == '\0') |
13541 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13542 | |
13543 | while (reply && *reply) | |
13544 | switch (*reply) | |
13545 | { | |
13546 | case 'F': | |
f197e0f1 VP |
13547 | p = ++reply; |
13548 | target_frameno = (int) strtol (p, &reply, 16); | |
13549 | if (reply == p) | |
13550 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13551 | /* Don't update our remote traceframe number cache on failure |
13552 | to select a remote traceframe. */ | |
f197e0f1 VP |
13553 | if (target_frameno == -1) |
13554 | return -1; | |
35b1e5cc SS |
13555 | break; |
13556 | case 'T': | |
f197e0f1 VP |
13557 | p = ++reply; |
13558 | target_tracept = (int) strtol (p, &reply, 16); | |
13559 | if (reply == p) | |
13560 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13561 | break; |
13562 | case 'O': /* "OK"? */ | |
13563 | if (reply[1] == 'K' && reply[2] == '\0') | |
13564 | reply += 2; | |
13565 | else | |
13566 | error (_("Bogus reply from target: %s"), reply); | |
13567 | break; | |
13568 | default: | |
13569 | error (_("Bogus reply from target: %s"), reply); | |
13570 | } | |
13571 | if (tpp) | |
13572 | *tpp = target_tracept; | |
e6e4e701 | 13573 | |
262e1174 | 13574 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13575 | return target_frameno; |
13576 | } | |
13577 | ||
57810aa7 | 13578 | bool |
f6ac5f3d | 13579 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13580 | { |
13581 | struct remote_state *rs = get_remote_state (); | |
13582 | char *reply; | |
13583 | ULONGEST uval; | |
13584 | ||
e6e4e701 PA |
13585 | set_remote_traceframe (); |
13586 | ||
8d64371b | 13587 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13588 | putpkt (rs->buf); |
b6bb3468 | 13589 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13590 | if (reply && *reply) |
13591 | { | |
13592 | if (*reply == 'V') | |
13593 | { | |
13594 | unpack_varlen_hex (reply + 1, &uval); | |
13595 | *val = (LONGEST) uval; | |
57810aa7 | 13596 | return true; |
35b1e5cc SS |
13597 | } |
13598 | } | |
57810aa7 | 13599 | return false; |
35b1e5cc SS |
13600 | } |
13601 | ||
f6ac5f3d PA |
13602 | int |
13603 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13604 | { |
13605 | struct remote_state *rs = get_remote_state (); | |
13606 | char *p, *reply; | |
13607 | ||
8d64371b | 13608 | p = rs->buf.data (); |
00bf0b85 SS |
13609 | strcpy (p, "QTSave:"); |
13610 | p += strlen (p); | |
8d64371b TT |
13611 | if ((p - rs->buf.data ()) + strlen (filename) * 2 |
13612 | >= get_remote_packet_size ()) | |
00bf0b85 | 13613 | error (_("Remote file name too long for trace save packet")); |
9f1b45b0 | 13614 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13615 | *p++ = '\0'; |
13616 | putpkt (rs->buf); | |
b6bb3468 | 13617 | reply = remote_get_noisy_reply (); |
d6c5869f | 13618 | if (*reply == '\0') |
ad91cd99 PA |
13619 | error (_("Target does not support this command.")); |
13620 | if (strcmp (reply, "OK") != 0) | |
13621 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13622 | return 0; |
13623 | } | |
13624 | ||
13625 | /* This is basically a memory transfer, but needs to be its own packet | |
13626 | because we don't know how the target actually organizes its trace | |
13627 | memory, plus we want to be able to ask for as much as possible, but | |
13628 | not be unhappy if we don't get as much as we ask for. */ | |
13629 | ||
f6ac5f3d PA |
13630 | LONGEST |
13631 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13632 | { |
13633 | struct remote_state *rs = get_remote_state (); | |
13634 | char *reply; | |
13635 | char *p; | |
13636 | int rslt; | |
13637 | ||
8d64371b | 13638 | p = rs->buf.data (); |
00bf0b85 SS |
13639 | strcpy (p, "qTBuffer:"); |
13640 | p += strlen (p); | |
13641 | p += hexnumstr (p, offset); | |
13642 | *p++ = ','; | |
13643 | p += hexnumstr (p, len); | |
13644 | *p++ = '\0'; | |
13645 | ||
13646 | putpkt (rs->buf); | |
b6bb3468 | 13647 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13648 | if (reply && *reply) |
13649 | { | |
13650 | /* 'l' by itself means we're at the end of the buffer and | |
13651 | there is nothing more to get. */ | |
13652 | if (*reply == 'l') | |
13653 | return 0; | |
13654 | ||
13655 | /* Convert the reply into binary. Limit the number of bytes to | |
13656 | convert according to our passed-in buffer size, rather than | |
13657 | what was returned in the packet; if the target is | |
13658 | unexpectedly generous and gives us a bigger reply than we | |
13659 | asked for, we don't want to crash. */ | |
b6bb3468 | 13660 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13661 | return rslt; |
13662 | } | |
13663 | ||
13664 | /* Something went wrong, flag as an error. */ | |
13665 | return -1; | |
13666 | } | |
13667 | ||
f6ac5f3d PA |
13668 | void |
13669 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13670 | { |
13671 | struct remote_state *rs = get_remote_state (); | |
13672 | ||
4082afcc | 13673 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13674 | { |
ad91cd99 PA |
13675 | char *reply; |
13676 | ||
8d64371b TT |
13677 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13678 | "QTDisconnected:%x", val); | |
33da3f1c | 13679 | putpkt (rs->buf); |
b6bb3468 | 13680 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13681 | if (*reply == '\0') |
33da3f1c | 13682 | error (_("Target does not support this command.")); |
ad91cd99 | 13683 | if (strcmp (reply, "OK") != 0) |
dda83cd7 | 13684 | error (_("Bogus reply from target: %s"), reply); |
33da3f1c SS |
13685 | } |
13686 | else if (val) | |
13687 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13688 | } |
13689 | ||
f6ac5f3d PA |
13690 | int |
13691 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c | 13692 | { |
5b6d1e4f | 13693 | thread_info *info = find_thread_ptid (this, ptid); |
a744cf53 | 13694 | |
7aabaf9d SM |
13695 | if (info != NULL && info->priv != NULL) |
13696 | return get_remote_thread_info (info)->core; | |
13697 | ||
dc146f7c VP |
13698 | return -1; |
13699 | } | |
13700 | ||
f6ac5f3d PA |
13701 | void |
13702 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13703 | { |
13704 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13705 | char *reply; |
4daf5ac0 | 13706 | |
8d64371b TT |
13707 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13708 | "QTBuffer:circular:%x", val); | |
4daf5ac0 | 13709 | putpkt (rs->buf); |
b6bb3468 | 13710 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13711 | if (*reply == '\0') |
4daf5ac0 | 13712 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13713 | if (strcmp (reply, "OK") != 0) |
13714 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13715 | } |
13716 | ||
f6ac5f3d PA |
13717 | traceframe_info_up |
13718 | remote_target::traceframe_info () | |
b3b9301e | 13719 | { |
9018be22 | 13720 | gdb::optional<gdb::char_vector> text |
8b88a78e | 13721 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_TRACEFRAME_INFO, |
b7b030ad | 13722 | NULL); |
9018be22 SM |
13723 | if (text) |
13724 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13725 | |
13726 | return NULL; | |
13727 | } | |
13728 | ||
405f8e94 SS |
13729 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13730 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13731 | if the packet is not supported, and 0 if the minimum instruction | |
13732 | length is unknown. */ | |
13733 | ||
f6ac5f3d PA |
13734 | int |
13735 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13736 | { |
13737 | struct remote_state *rs = get_remote_state (); | |
13738 | char *reply; | |
13739 | ||
e886a173 PA |
13740 | /* If we're not debugging a process yet, the IPA can't be |
13741 | loaded. */ | |
55f6301a | 13742 | if (!target_has_execution ()) |
e886a173 PA |
13743 | return 0; |
13744 | ||
13745 | /* Make sure the remote is pointing at the right process. */ | |
13746 | set_general_process (); | |
13747 | ||
8d64371b | 13748 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13749 | putpkt (rs->buf); |
b6bb3468 | 13750 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13751 | if (*reply == '\0') |
13752 | return -1; | |
13753 | else | |
13754 | { | |
13755 | ULONGEST min_insn_len; | |
13756 | ||
13757 | unpack_varlen_hex (reply, &min_insn_len); | |
13758 | ||
13759 | return (int) min_insn_len; | |
13760 | } | |
13761 | } | |
13762 | ||
f6ac5f3d PA |
13763 | void |
13764 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13765 | { |
4082afcc | 13766 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13767 | { |
13768 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13769 | char *buf = rs->buf.data (); |
13770 | char *endbuf = buf + get_remote_packet_size (); | |
f6f899bf HAQ |
13771 | enum packet_result result; |
13772 | ||
13773 | gdb_assert (val >= 0 || val == -1); | |
13774 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13775 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13776 | if (val < 0) | |
13777 | { | |
13778 | *buf++ = '-'; | |
dda83cd7 | 13779 | buf += hexnumstr (buf, (ULONGEST) -val); |
f6f899bf HAQ |
13780 | } |
13781 | else | |
13782 | buf += hexnumstr (buf, (ULONGEST) val); | |
13783 | ||
13784 | putpkt (rs->buf); | |
b6bb3468 | 13785 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13786 | result = packet_ok (rs->buf, |
13787 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13788 | ||
13789 | if (result != PACKET_OK) | |
8d64371b | 13790 | warning (_("Bogus reply from target: %s"), rs->buf.data ()); |
f6f899bf HAQ |
13791 | } |
13792 | } | |
13793 | ||
57810aa7 | 13794 | bool |
f6ac5f3d PA |
13795 | remote_target::set_trace_notes (const char *user, const char *notes, |
13796 | const char *stop_notes) | |
f196051f SS |
13797 | { |
13798 | struct remote_state *rs = get_remote_state (); | |
13799 | char *reply; | |
8d64371b TT |
13800 | char *buf = rs->buf.data (); |
13801 | char *endbuf = buf + get_remote_packet_size (); | |
f196051f SS |
13802 | int nbytes; |
13803 | ||
13804 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13805 | if (user) | |
13806 | { | |
13807 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13808 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13809 | buf += 2 * nbytes; |
13810 | *buf++ = ';'; | |
13811 | } | |
13812 | if (notes) | |
13813 | { | |
13814 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13815 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13816 | buf += 2 * nbytes; |
13817 | *buf++ = ';'; | |
13818 | } | |
13819 | if (stop_notes) | |
13820 | { | |
13821 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13822 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13823 | buf += 2 * nbytes; |
13824 | *buf++ = ';'; | |
13825 | } | |
13826 | /* Ensure the buffer is terminated. */ | |
13827 | *buf = '\0'; | |
13828 | ||
13829 | putpkt (rs->buf); | |
b6bb3468 | 13830 | reply = remote_get_noisy_reply (); |
f196051f | 13831 | if (*reply == '\0') |
57810aa7 | 13832 | return false; |
f196051f SS |
13833 | |
13834 | if (strcmp (reply, "OK") != 0) | |
13835 | error (_("Bogus reply from target: %s"), reply); | |
13836 | ||
57810aa7 | 13837 | return true; |
f196051f SS |
13838 | } |
13839 | ||
57810aa7 PA |
13840 | bool |
13841 | remote_target::use_agent (bool use) | |
d1feda86 | 13842 | { |
4082afcc | 13843 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13844 | { |
13845 | struct remote_state *rs = get_remote_state (); | |
13846 | ||
13847 | /* If the stub supports QAgent. */ | |
8d64371b | 13848 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 | 13849 | putpkt (rs->buf); |
8d64371b | 13850 | getpkt (&rs->buf, 0); |
d1feda86 | 13851 | |
8d64371b | 13852 | if (strcmp (rs->buf.data (), "OK") == 0) |
d1feda86 | 13853 | { |
f6ac5f3d | 13854 | ::use_agent = use; |
57810aa7 | 13855 | return true; |
d1feda86 YQ |
13856 | } |
13857 | } | |
13858 | ||
57810aa7 | 13859 | return false; |
d1feda86 YQ |
13860 | } |
13861 | ||
57810aa7 | 13862 | bool |
f6ac5f3d | 13863 | remote_target::can_use_agent () |
d1feda86 | 13864 | { |
4082afcc | 13865 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13866 | } |
13867 | ||
9accd112 MM |
13868 | struct btrace_target_info |
13869 | { | |
13870 | /* The ptid of the traced thread. */ | |
13871 | ptid_t ptid; | |
f4abbc16 MM |
13872 | |
13873 | /* The obtained branch trace configuration. */ | |
13874 | struct btrace_config conf; | |
9accd112 MM |
13875 | }; |
13876 | ||
f4abbc16 MM |
13877 | /* Reset our idea of our target's btrace configuration. */ |
13878 | ||
13879 | static void | |
6b8edb51 | 13880 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 13881 | { |
f4abbc16 MM |
13882 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
13883 | } | |
13884 | ||
f4abbc16 MM |
13885 | /* Synchronize the configuration with the target. */ |
13886 | ||
6b8edb51 PA |
13887 | void |
13888 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 13889 | { |
d33501a5 MM |
13890 | struct packet_config *packet; |
13891 | struct remote_state *rs; | |
13892 | char *buf, *pos, *endbuf; | |
13893 | ||
13894 | rs = get_remote_state (); | |
8d64371b | 13895 | buf = rs->buf.data (); |
d33501a5 MM |
13896 | endbuf = buf + get_remote_packet_size (); |
13897 | ||
13898 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13899 | if (packet_config_support (packet) == PACKET_ENABLE | |
13900 | && conf->bts.size != rs->btrace_config.bts.size) | |
13901 | { | |
13902 | pos = buf; | |
13903 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
dda83cd7 | 13904 | conf->bts.size); |
d33501a5 MM |
13905 | |
13906 | putpkt (buf); | |
8d64371b | 13907 | getpkt (&rs->buf, 0); |
d33501a5 MM |
13908 | |
13909 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13910 | { | |
13911 | if (buf[0] == 'E' && buf[1] == '.') | |
13912 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13913 | else | |
13914 | error (_("Failed to configure the BTS buffer size.")); | |
13915 | } | |
13916 | ||
13917 | rs->btrace_config.bts.size = conf->bts.size; | |
13918 | } | |
b20a6524 MM |
13919 | |
13920 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13921 | if (packet_config_support (packet) == PACKET_ENABLE | |
13922 | && conf->pt.size != rs->btrace_config.pt.size) | |
13923 | { | |
13924 | pos = buf; | |
13925 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
dda83cd7 | 13926 | conf->pt.size); |
b20a6524 MM |
13927 | |
13928 | putpkt (buf); | |
8d64371b | 13929 | getpkt (&rs->buf, 0); |
b20a6524 MM |
13930 | |
13931 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13932 | { | |
13933 | if (buf[0] == 'E' && buf[1] == '.') | |
13934 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13935 | else | |
13936 | error (_("Failed to configure the trace buffer size.")); | |
13937 | } | |
13938 | ||
13939 | rs->btrace_config.pt.size = conf->pt.size; | |
13940 | } | |
f4abbc16 MM |
13941 | } |
13942 | ||
13943 | /* Read the current thread's btrace configuration from the target and | |
13944 | store it into CONF. */ | |
13945 | ||
13946 | static void | |
13947 | btrace_read_config (struct btrace_config *conf) | |
13948 | { | |
9018be22 | 13949 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 13950 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE_CONF, ""); |
9018be22 SM |
13951 | if (xml) |
13952 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
13953 | } |
13954 | ||
c0272db5 TW |
13955 | /* Maybe reopen target btrace. */ |
13956 | ||
6b8edb51 PA |
13957 | void |
13958 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
13959 | { |
13960 | struct remote_state *rs = get_remote_state (); | |
c0272db5 | 13961 | int btrace_target_pushed = 0; |
15766370 | 13962 | #if !defined (HAVE_LIBIPT) |
c0272db5 | 13963 | int warned = 0; |
15766370 | 13964 | #endif |
c0272db5 | 13965 | |
aedbe3bb CM |
13966 | /* Don't bother walking the entirety of the remote thread list when |
13967 | we know the feature isn't supported by the remote. */ | |
13968 | if (packet_support (PACKET_qXfer_btrace_conf) != PACKET_ENABLE) | |
13969 | return; | |
13970 | ||
5ed8105e PA |
13971 | scoped_restore_current_thread restore_thread; |
13972 | ||
5b6d1e4f | 13973 | for (thread_info *tp : all_non_exited_threads (this)) |
c0272db5 TW |
13974 | { |
13975 | set_general_thread (tp->ptid); | |
13976 | ||
13977 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13978 | btrace_read_config (&rs->btrace_config); | |
13979 | ||
13980 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13981 | continue; | |
13982 | ||
13983 | #if !defined (HAVE_LIBIPT) | |
13984 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13985 | { | |
13986 | if (!warned) | |
13987 | { | |
13988 | warned = 1; | |
c4e12631 MM |
13989 | warning (_("Target is recording using Intel Processor Trace " |
13990 | "but support was disabled at compile time.")); | |
c0272db5 TW |
13991 | } |
13992 | ||
13993 | continue; | |
13994 | } | |
13995 | #endif /* !defined (HAVE_LIBIPT) */ | |
13996 | ||
13997 | /* Push target, once, but before anything else happens. This way our | |
13998 | changes to the threads will be cleaned up by unpushing the target | |
13999 | in case btrace_read_config () throws. */ | |
14000 | if (!btrace_target_pushed) | |
14001 | { | |
14002 | btrace_target_pushed = 1; | |
14003 | record_btrace_push_target (); | |
14004 | printf_filtered (_("Target is recording using %s.\n"), | |
14005 | btrace_format_string (rs->btrace_config.format)); | |
14006 | } | |
14007 | ||
14008 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
14009 | tp->btrace.target->ptid = tp->ptid; | |
14010 | tp->btrace.target->conf = rs->btrace_config; | |
14011 | } | |
c0272db5 TW |
14012 | } |
14013 | ||
9accd112 MM |
14014 | /* Enable branch tracing. */ |
14015 | ||
f6ac5f3d PA |
14016 | struct btrace_target_info * |
14017 | remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf) | |
9accd112 MM |
14018 | { |
14019 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 14020 | struct packet_config *packet = NULL; |
9accd112 | 14021 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
14022 | char *buf = rs->buf.data (); |
14023 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14024 | |
b20a6524 MM |
14025 | switch (conf->format) |
14026 | { | |
14027 | case BTRACE_FORMAT_BTS: | |
14028 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
14029 | break; | |
14030 | ||
14031 | case BTRACE_FORMAT_PT: | |
14032 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
14033 | break; | |
14034 | } | |
14035 | ||
14036 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
14037 | error (_("Target does not support branch tracing.")); |
14038 | ||
f4abbc16 MM |
14039 | btrace_sync_conf (conf); |
14040 | ||
9accd112 MM |
14041 | set_general_thread (ptid); |
14042 | ||
14043 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
14044 | putpkt (rs->buf); | |
8d64371b | 14045 | getpkt (&rs->buf, 0); |
9accd112 MM |
14046 | |
14047 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
14048 | { | |
14049 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14050 | error (_("Could not enable branch tracing for %s: %s"), | |
a068643d | 14051 | target_pid_to_str (ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14052 | else |
14053 | error (_("Could not enable branch tracing for %s."), | |
a068643d | 14054 | target_pid_to_str (ptid).c_str ()); |
9accd112 MM |
14055 | } |
14056 | ||
8d749320 | 14057 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
14058 | tinfo->ptid = ptid; |
14059 | ||
f4abbc16 MM |
14060 | /* If we fail to read the configuration, we lose some information, but the |
14061 | tracing itself is not impacted. */ | |
a70b8144 | 14062 | try |
492d29ea PA |
14063 | { |
14064 | btrace_read_config (&tinfo->conf); | |
14065 | } | |
230d2906 | 14066 | catch (const gdb_exception_error &err) |
492d29ea PA |
14067 | { |
14068 | if (err.message != NULL) | |
3d6e9d23 | 14069 | warning ("%s", err.what ()); |
492d29ea | 14070 | } |
f4abbc16 | 14071 | |
9accd112 MM |
14072 | return tinfo; |
14073 | } | |
14074 | ||
14075 | /* Disable branch tracing. */ | |
14076 | ||
f6ac5f3d PA |
14077 | void |
14078 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14079 | { |
14080 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
14081 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
14082 | char *buf = rs->buf.data (); |
14083 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 14084 | |
4082afcc | 14085 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14086 | error (_("Target does not support branch tracing.")); |
14087 | ||
14088 | set_general_thread (tinfo->ptid); | |
14089 | ||
14090 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
14091 | putpkt (rs->buf); | |
8d64371b | 14092 | getpkt (&rs->buf, 0); |
9accd112 MM |
14093 | |
14094 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
14095 | { | |
14096 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
14097 | error (_("Could not disable branch tracing for %s: %s"), | |
a068643d | 14098 | target_pid_to_str (tinfo->ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
14099 | else |
14100 | error (_("Could not disable branch tracing for %s."), | |
a068643d | 14101 | target_pid_to_str (tinfo->ptid).c_str ()); |
9accd112 MM |
14102 | } |
14103 | ||
14104 | xfree (tinfo); | |
14105 | } | |
14106 | ||
14107 | /* Teardown branch tracing. */ | |
14108 | ||
f6ac5f3d PA |
14109 | void |
14110 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
14111 | { |
14112 | /* We must not talk to the target during teardown. */ | |
14113 | xfree (tinfo); | |
14114 | } | |
14115 | ||
14116 | /* Read the branch trace. */ | |
14117 | ||
f6ac5f3d PA |
14118 | enum btrace_error |
14119 | remote_target::read_btrace (struct btrace_data *btrace, | |
14120 | struct btrace_target_info *tinfo, | |
14121 | enum btrace_read_type type) | |
9accd112 MM |
14122 | { |
14123 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 14124 | const char *annex; |
9accd112 | 14125 | |
4082afcc | 14126 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
14127 | error (_("Target does not support branch tracing.")); |
14128 | ||
14129 | #if !defined(HAVE_LIBEXPAT) | |
14130 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
14131 | #endif | |
14132 | ||
14133 | switch (type) | |
14134 | { | |
864089d2 | 14135 | case BTRACE_READ_ALL: |
9accd112 MM |
14136 | annex = "all"; |
14137 | break; | |
864089d2 | 14138 | case BTRACE_READ_NEW: |
9accd112 MM |
14139 | annex = "new"; |
14140 | break; | |
969c39fb MM |
14141 | case BTRACE_READ_DELTA: |
14142 | annex = "delta"; | |
14143 | break; | |
9accd112 MM |
14144 | default: |
14145 | internal_error (__FILE__, __LINE__, | |
14146 | _("Bad branch tracing read type: %u."), | |
14147 | (unsigned int) type); | |
14148 | } | |
14149 | ||
9018be22 | 14150 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 14151 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE, annex); |
9018be22 | 14152 | if (!xml) |
969c39fb | 14153 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 14154 | |
9018be22 | 14155 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 14156 | |
969c39fb | 14157 | return BTRACE_ERR_NONE; |
9accd112 MM |
14158 | } |
14159 | ||
f6ac5f3d PA |
14160 | const struct btrace_config * |
14161 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
14162 | { |
14163 | return &tinfo->conf; | |
14164 | } | |
14165 | ||
57810aa7 | 14166 | bool |
f6ac5f3d | 14167 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 14168 | { |
4082afcc PA |
14169 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
14170 | == PACKET_ENABLE); | |
ced63ec0 GB |
14171 | } |
14172 | ||
9dd130a0 TT |
14173 | /* Implementation of to_load. */ |
14174 | ||
f6ac5f3d PA |
14175 | void |
14176 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
14177 | { |
14178 | generic_load (name, from_tty); | |
14179 | } | |
14180 | ||
c78fa86a GB |
14181 | /* Accepts an integer PID; returns a string representing a file that |
14182 | can be opened on the remote side to get the symbols for the child | |
14183 | process. Returns NULL if the operation is not supported. */ | |
14184 | ||
f6ac5f3d PA |
14185 | char * |
14186 | remote_target::pid_to_exec_file (int pid) | |
c78fa86a | 14187 | { |
9018be22 | 14188 | static gdb::optional<gdb::char_vector> filename; |
835205d0 | 14189 | char *annex = NULL; |
c78fa86a GB |
14190 | |
14191 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
14192 | return NULL; | |
14193 | ||
5b6d1e4f | 14194 | inferior *inf = find_inferior_pid (this, pid); |
835205d0 GB |
14195 | if (inf == NULL) |
14196 | internal_error (__FILE__, __LINE__, | |
14197 | _("not currently attached to process %d"), pid); | |
14198 | ||
14199 | if (!inf->fake_pid_p) | |
14200 | { | |
14201 | const int annex_size = 9; | |
14202 | ||
224c3ddb | 14203 | annex = (char *) alloca (annex_size); |
835205d0 GB |
14204 | xsnprintf (annex, annex_size, "%x", pid); |
14205 | } | |
14206 | ||
8b88a78e | 14207 | filename = target_read_stralloc (current_top_target (), |
c78fa86a GB |
14208 | TARGET_OBJECT_EXEC_FILE, annex); |
14209 | ||
9018be22 | 14210 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
14211 | } |
14212 | ||
750ce8d1 YQ |
14213 | /* Implement the to_can_do_single_step target_ops method. */ |
14214 | ||
f6ac5f3d PA |
14215 | int |
14216 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
14217 | { |
14218 | /* We can only tell whether target supports single step or not by | |
14219 | supported s and S vCont actions if the stub supports vContSupported | |
14220 | feature. If the stub doesn't support vContSupported feature, | |
14221 | we have conservatively to think target doesn't supports single | |
14222 | step. */ | |
14223 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
14224 | { | |
14225 | struct remote_state *rs = get_remote_state (); | |
14226 | ||
14227 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
6b8edb51 | 14228 | remote_vcont_probe (); |
750ce8d1 YQ |
14229 | |
14230 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
14231 | } | |
14232 | else | |
14233 | return 0; | |
14234 | } | |
14235 | ||
3a00c802 PA |
14236 | /* Implementation of the to_execution_direction method for the remote |
14237 | target. */ | |
14238 | ||
f6ac5f3d PA |
14239 | enum exec_direction_kind |
14240 | remote_target::execution_direction () | |
3a00c802 PA |
14241 | { |
14242 | struct remote_state *rs = get_remote_state (); | |
14243 | ||
14244 | return rs->last_resume_exec_dir; | |
14245 | } | |
14246 | ||
f6327dcb KB |
14247 | /* Return pointer to the thread_info struct which corresponds to |
14248 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
14249 | ||
f6ac5f3d PA |
14250 | thread_info * |
14251 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
14252 | int handle_len, | |
14253 | inferior *inf) | |
f6327dcb | 14254 | { |
5b6d1e4f | 14255 | for (thread_info *tp : all_non_exited_threads (this)) |
f6327dcb | 14256 | { |
7aabaf9d | 14257 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
14258 | |
14259 | if (tp->inf == inf && priv != NULL) | |
dda83cd7 | 14260 | { |
7aabaf9d | 14261 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 14262 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
dda83cd7 | 14263 | handle_len, priv->thread_handle.size ()); |
7aabaf9d | 14264 | if (memcmp (thread_handle, priv->thread_handle.data (), |
dda83cd7 | 14265 | handle_len) == 0) |
f6327dcb KB |
14266 | return tp; |
14267 | } | |
14268 | } | |
14269 | ||
14270 | return NULL; | |
14271 | } | |
14272 | ||
3d6c6204 KB |
14273 | gdb::byte_vector |
14274 | remote_target::thread_info_to_thread_handle (struct thread_info *tp) | |
14275 | { | |
14276 | remote_thread_info *priv = get_remote_thread_info (tp); | |
14277 | return priv->thread_handle; | |
14278 | } | |
14279 | ||
57810aa7 | 14280 | bool |
f6ac5f3d | 14281 | remote_target::can_async_p () |
6426a772 | 14282 | { |
5d93a237 TT |
14283 | struct remote_state *rs = get_remote_state (); |
14284 | ||
3015c064 SM |
14285 | /* We don't go async if the user has explicitly prevented it with the |
14286 | "maint set target-async" command. */ | |
c6ebd6cf | 14287 | if (!target_async_permitted) |
57810aa7 | 14288 | return false; |
75c99385 | 14289 | |
23860348 | 14290 | /* We're async whenever the serial device is. */ |
5d93a237 | 14291 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
14292 | } |
14293 | ||
57810aa7 | 14294 | bool |
f6ac5f3d | 14295 | remote_target::is_async_p () |
6426a772 | 14296 | { |
5d93a237 TT |
14297 | struct remote_state *rs = get_remote_state (); |
14298 | ||
c6ebd6cf | 14299 | if (!target_async_permitted) |
75c99385 | 14300 | /* We only enable async when the user specifically asks for it. */ |
57810aa7 | 14301 | return false; |
75c99385 | 14302 | |
23860348 | 14303 | /* We're async whenever the serial device is. */ |
5d93a237 | 14304 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
14305 | } |
14306 | ||
2acceee2 JM |
14307 | /* Pass the SERIAL event on and up to the client. One day this code |
14308 | will be able to delay notifying the client of an event until the | |
23860348 | 14309 | point where an entire packet has been received. */ |
2acceee2 | 14310 | |
2acceee2 JM |
14311 | static serial_event_ftype remote_async_serial_handler; |
14312 | ||
6426a772 | 14313 | static void |
819cc324 | 14314 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14315 | { |
2acceee2 JM |
14316 | /* Don't propogate error information up to the client. Instead let |
14317 | the client find out about the error by querying the target. */ | |
b1a35af2 | 14318 | inferior_event_handler (INF_REG_EVENT); |
2acceee2 JM |
14319 | } |
14320 | ||
74531fed PA |
14321 | static void |
14322 | remote_async_inferior_event_handler (gdb_client_data data) | |
14323 | { | |
b1a35af2 | 14324 | inferior_event_handler (INF_REG_EVENT); |
96118d11 PA |
14325 | |
14326 | remote_target *remote = (remote_target *) data; | |
14327 | remote_state *rs = remote->get_remote_state (); | |
14328 | ||
14329 | /* inferior_event_handler may have consumed an event pending on the | |
14330 | infrun side without calling target_wait on the REMOTE target, or | |
14331 | may have pulled an event out of a different target. Keep trying | |
14332 | for this remote target as long it still has either pending events | |
14333 | or unacknowledged notifications. */ | |
14334 | ||
14335 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL | |
14336 | || !rs->stop_reply_queue.empty ()) | |
14337 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
74531fed PA |
14338 | } |
14339 | ||
5b6d1e4f PA |
14340 | int |
14341 | remote_target::async_wait_fd () | |
14342 | { | |
14343 | struct remote_state *rs = get_remote_state (); | |
14344 | return rs->remote_desc->fd; | |
14345 | } | |
14346 | ||
f6ac5f3d PA |
14347 | void |
14348 | remote_target::async (int enable) | |
2acceee2 | 14349 | { |
5d93a237 TT |
14350 | struct remote_state *rs = get_remote_state (); |
14351 | ||
6a3753b3 | 14352 | if (enable) |
2acceee2 | 14353 | { |
88b496c3 | 14354 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14355 | |
14356 | /* If there are pending events in the stop reply queue tell the | |
14357 | event loop to process them. */ | |
953edf2b | 14358 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 14359 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14360 | /* For simplicity, below we clear the pending events token |
14361 | without remembering whether it is marked, so here we always | |
14362 | mark it. If there's actually no pending notification to | |
14363 | process, this ends up being a no-op (other than a spurious | |
14364 | event-loop wakeup). */ | |
14365 | if (target_is_non_stop_p ()) | |
14366 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14367 | } |
14368 | else | |
b7d2e916 PA |
14369 | { |
14370 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14371 | /* If the core is disabling async, it doesn't want to be |
14372 | disturbed with target events. Clear all async event sources | |
14373 | too. */ | |
6b8edb51 | 14374 | clear_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14375 | if (target_is_non_stop_p ()) |
14376 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14377 | } |
6426a772 JM |
14378 | } |
14379 | ||
65706a29 PA |
14380 | /* Implementation of the to_thread_events method. */ |
14381 | ||
f6ac5f3d PA |
14382 | void |
14383 | remote_target::thread_events (int enable) | |
65706a29 PA |
14384 | { |
14385 | struct remote_state *rs = get_remote_state (); | |
14386 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
14387 | |
14388 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
14389 | return; | |
14390 | ||
8d64371b | 14391 | xsnprintf (rs->buf.data (), size, "QThreadEvents:%x", enable ? 1 : 0); |
65706a29 | 14392 | putpkt (rs->buf); |
8d64371b | 14393 | getpkt (&rs->buf, 0); |
65706a29 PA |
14394 | |
14395 | switch (packet_ok (rs->buf, | |
14396 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
14397 | { | |
14398 | case PACKET_OK: | |
8d64371b TT |
14399 | if (strcmp (rs->buf.data (), "OK") != 0) |
14400 | error (_("Remote refused setting thread events: %s"), rs->buf.data ()); | |
65706a29 PA |
14401 | break; |
14402 | case PACKET_ERROR: | |
8d64371b | 14403 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
65706a29 PA |
14404 | break; |
14405 | case PACKET_UNKNOWN: | |
14406 | break; | |
14407 | } | |
14408 | } | |
14409 | ||
d471ea57 | 14410 | static void |
981a3fb3 | 14411 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14412 | { |
37a105a1 | 14413 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14414 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14415 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14416 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14417 | |
2e783024 | 14418 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14419 | for (; list != NULL; list = list->next) |
14420 | if (strcmp (list->name, "Z-packet") == 0) | |
14421 | continue; | |
427c3a89 DJ |
14422 | else if (list->type == not_set_cmd) |
14423 | /* Alias commands are exactly like the original, except they | |
14424 | don't have the normal type. */ | |
14425 | continue; | |
14426 | else | |
37a105a1 | 14427 | { |
2e783024 | 14428 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14429 | |
112e8700 SM |
14430 | uiout->field_string ("name", list->name); |
14431 | uiout->text (": "); | |
427c3a89 | 14432 | if (list->type == show_cmd) |
f5c4fcd9 | 14433 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14434 | else |
14435 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 14436 | } |
d471ea57 | 14437 | } |
5a2468f5 | 14438 | |
0f71a2f6 | 14439 | |
23860348 | 14440 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
14441 | static void |
14442 | remote_new_objfile (struct objfile *objfile) | |
14443 | { | |
6b8edb51 | 14444 | remote_target *remote = get_current_remote_target (); |
5d93a237 | 14445 | |
6b8edb51 PA |
14446 | if (remote != NULL) /* Have a remote connection. */ |
14447 | remote->remote_check_symbols (); | |
dc8acb97 MS |
14448 | } |
14449 | ||
00bf0b85 SS |
14450 | /* Pull all the tracepoints defined on the target and create local |
14451 | data structures representing them. We don't want to create real | |
14452 | tracepoints yet, we don't want to mess up the user's existing | |
14453 | collection. */ | |
14454 | ||
f6ac5f3d PA |
14455 | int |
14456 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14457 | { |
00bf0b85 SS |
14458 | struct remote_state *rs = get_remote_state (); |
14459 | char *p; | |
d5551862 | 14460 | |
00bf0b85 SS |
14461 | /* Ask for a first packet of tracepoint definition. */ |
14462 | putpkt ("qTfP"); | |
8d64371b TT |
14463 | getpkt (&rs->buf, 0); |
14464 | p = rs->buf.data (); | |
00bf0b85 | 14465 | while (*p && *p != 'l') |
d5551862 | 14466 | { |
00bf0b85 SS |
14467 | parse_tracepoint_definition (p, utpp); |
14468 | /* Ask for another packet of tracepoint definition. */ | |
14469 | putpkt ("qTsP"); | |
8d64371b TT |
14470 | getpkt (&rs->buf, 0); |
14471 | p = rs->buf.data (); | |
d5551862 | 14472 | } |
00bf0b85 | 14473 | return 0; |
d5551862 SS |
14474 | } |
14475 | ||
f6ac5f3d PA |
14476 | int |
14477 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14478 | { |
00bf0b85 | 14479 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14480 | char *p; |
d5551862 | 14481 | |
00bf0b85 SS |
14482 | /* Ask for a first packet of variable definition. */ |
14483 | putpkt ("qTfV"); | |
8d64371b TT |
14484 | getpkt (&rs->buf, 0); |
14485 | p = rs->buf.data (); | |
00bf0b85 | 14486 | while (*p && *p != 'l') |
d5551862 | 14487 | { |
00bf0b85 SS |
14488 | parse_tsv_definition (p, utsvp); |
14489 | /* Ask for another packet of variable definition. */ | |
14490 | putpkt ("qTsV"); | |
8d64371b TT |
14491 | getpkt (&rs->buf, 0); |
14492 | p = rs->buf.data (); | |
d5551862 | 14493 | } |
00bf0b85 | 14494 | return 0; |
d5551862 SS |
14495 | } |
14496 | ||
c1e36e3e PA |
14497 | /* The "set/show range-stepping" show hook. */ |
14498 | ||
14499 | static void | |
14500 | show_range_stepping (struct ui_file *file, int from_tty, | |
14501 | struct cmd_list_element *c, | |
14502 | const char *value) | |
14503 | { | |
14504 | fprintf_filtered (file, | |
14505 | _("Debugger's willingness to use range stepping " | |
14506 | "is %s.\n"), value); | |
14507 | } | |
14508 | ||
6b8edb51 PA |
14509 | /* Return true if the vCont;r action is supported by the remote |
14510 | stub. */ | |
14511 | ||
14512 | bool | |
14513 | remote_target::vcont_r_supported () | |
14514 | { | |
14515 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
14516 | remote_vcont_probe (); | |
14517 | ||
14518 | return (packet_support (PACKET_vCont) == PACKET_ENABLE | |
14519 | && get_remote_state ()->supports_vCont.r); | |
14520 | } | |
14521 | ||
c1e36e3e PA |
14522 | /* The "set/show range-stepping" set hook. */ |
14523 | ||
14524 | static void | |
eb4c3f4a | 14525 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14526 | struct cmd_list_element *c) |
14527 | { | |
6b8edb51 PA |
14528 | /* When enabling, check whether range stepping is actually supported |
14529 | by the target, and warn if not. */ | |
c1e36e3e PA |
14530 | if (use_range_stepping) |
14531 | { | |
6b8edb51 PA |
14532 | remote_target *remote = get_current_remote_target (); |
14533 | if (remote == NULL | |
14534 | || !remote->vcont_r_supported ()) | |
14535 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
14536 | } |
14537 | } | |
14538 | ||
6c265988 | 14539 | void _initialize_remote (); |
c906108c | 14540 | void |
6c265988 | 14541 | _initialize_remote () |
c906108c | 14542 | { |
9a7071a8 | 14543 | struct cmd_list_element *cmd; |
6f937416 | 14544 | const char *cmd_name; |
ea9c271d | 14545 | |
0f71a2f6 | 14546 | /* architecture specific data */ |
29709017 DJ |
14547 | remote_g_packet_data_handle = |
14548 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14549 | |
d9f719f1 PA |
14550 | add_target (remote_target_info, remote_target::open); |
14551 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 14552 | |
dc8acb97 | 14553 | /* Hook into new objfile notification. */ |
76727919 | 14554 | gdb::observers::new_objfile.attach (remote_new_objfile); |
dc8acb97 | 14555 | |
c906108c SS |
14556 | #if 0 |
14557 | init_remote_threadtests (); | |
14558 | #endif | |
14559 | ||
23860348 | 14560 | /* set/show remote ... */ |
d471ea57 | 14561 | |
0743fc83 | 14562 | add_basic_prefix_cmd ("remote", class_maintenance, _("\ |
590042fc | 14563 | Remote protocol specific variables.\n\ |
5a2468f5 | 14564 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14565 | the packets being used."), |
0743fc83 TT |
14566 | &remote_set_cmdlist, "set remote ", |
14567 | 0 /* allow-unknown */, &setlist); | |
1bedd215 | 14568 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
590042fc | 14569 | Remote protocol specific variables.\n\ |
5a2468f5 | 14570 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14571 | the packets being used."), |
cff3e48b | 14572 | &remote_show_cmdlist, "show remote ", |
23860348 | 14573 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14574 | |
1a966eab AC |
14575 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14576 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14577 | Argument is a single section name (default: all loaded sections).\n\ |
14578 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14579 | &cmdlist); |
14580 | ||
1a966eab AC |
14581 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14582 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14583 | maintenance packet TEXT\n\ |
14584 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14585 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14586 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14587 | terminating `#' character and checksum."), |
c906108c SS |
14588 | &maintenancelist); |
14589 | ||
7915a72c AC |
14590 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
14591 | Set whether to send break if interrupted."), _("\ | |
14592 | Show whether to send break if interrupted."), _("\ | |
14593 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 14594 | set_remotebreak, show_remotebreak, |
e707bbc2 | 14595 | &setlist, &showlist); |
9a7071a8 | 14596 | cmd_name = "remotebreak"; |
cf00cd6f | 14597 | cmd = lookup_cmd (&cmd_name, setlist, "", NULL, -1, 1); |
9a7071a8 JB |
14598 | deprecate_cmd (cmd, "set remote interrupt-sequence"); |
14599 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
cf00cd6f | 14600 | cmd = lookup_cmd (&cmd_name, showlist, "", NULL, -1, 1); |
9a7071a8 JB |
14601 | deprecate_cmd (cmd, "show remote interrupt-sequence"); |
14602 | ||
14603 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14604 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14605 | _("\ | |
9a7071a8 JB |
14606 | Set interrupt sequence to remote target."), _("\ |
14607 | Show interrupt sequence to remote target."), _("\ | |
14608 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14609 | NULL, show_interrupt_sequence, | |
14610 | &remote_set_cmdlist, | |
14611 | &remote_show_cmdlist); | |
14612 | ||
14613 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14614 | &interrupt_on_connect, _("\ | |
590042fc PW |
14615 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ |
14616 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ | |
9a7071a8 JB |
14617 | If set, interrupt sequence is sent to remote target."), |
14618 | NULL, NULL, | |
14619 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14620 | |
23860348 | 14621 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14622 | |
1a966eab AC |
14623 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14624 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14625 | &setlist); |
1a966eab AC |
14626 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14627 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14628 | &showlist); |
14629 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14630 | set_memory_write_packet_size, _("\ |
14631 | Set the maximum number of bytes per memory-write packet.\n\ | |
14632 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14633 | default packet size. The actual limit is further reduced\n\ | |
14634 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14635 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14636 | &remote_set_cmdlist); |
14637 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14638 | set_memory_read_packet_size, _("\ |
14639 | Set the maximum number of bytes per memory-read packet.\n\ | |
14640 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14641 | default packet size. The actual limit is further reduced\n\ | |
14642 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14643 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14644 | &remote_set_cmdlist); |
14645 | add_cmd ("memory-write-packet-size", no_class, | |
14646 | show_memory_write_packet_size, | |
1a966eab | 14647 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14648 | &remote_show_cmdlist); |
14649 | add_cmd ("memory-read-packet-size", no_class, | |
14650 | show_memory_read_packet_size, | |
1a966eab | 14651 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14652 | &remote_show_cmdlist); |
c906108c | 14653 | |
055303e2 | 14654 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14655 | &remote_hw_watchpoint_limit, _("\ |
14656 | Set the maximum number of target hardware watchpoints."), _("\ | |
14657 | Show the maximum number of target hardware watchpoints."), _("\ | |
055303e2 AB |
14658 | Specify \"unlimited\" for unlimited hardware watchpoints."), |
14659 | NULL, show_hardware_watchpoint_limit, | |
14660 | &remote_set_cmdlist, | |
14661 | &remote_show_cmdlist); | |
14662 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-length-limit", | |
14663 | no_class, | |
480a3f21 PW |
14664 | &remote_hw_watchpoint_length_limit, _("\ |
14665 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14666 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
055303e2 AB |
14667 | Specify \"unlimited\" to allow watchpoints of unlimited size."), |
14668 | NULL, show_hardware_watchpoint_length_limit, | |
480a3f21 | 14669 | &remote_set_cmdlist, &remote_show_cmdlist); |
055303e2 | 14670 | add_setshow_zuinteger_unlimited_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14671 | &remote_hw_breakpoint_limit, _("\ |
14672 | Set the maximum number of target hardware breakpoints."), _("\ | |
14673 | Show the maximum number of target hardware breakpoints."), _("\ | |
055303e2 AB |
14674 | Specify \"unlimited\" for unlimited hardware breakpoints."), |
14675 | NULL, show_hardware_breakpoint_limit, | |
b3f42336 | 14676 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14677 | |
1b493192 PA |
14678 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14679 | &remote_address_size, _("\ | |
4d28ad1e AC |
14680 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14681 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14682 | NULL, |
14683 | NULL, /* FIXME: i18n: */ | |
14684 | &setlist, &showlist); | |
c906108c | 14685 | |
ca4f7f8b PA |
14686 | init_all_packet_configs (); |
14687 | ||
444abaca | 14688 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14689 | "X", "binary-download", 1); |
0f71a2f6 | 14690 | |
444abaca | 14691 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14692 | "vCont", "verbose-resume", 0); |
506fb367 | 14693 | |
89be2091 DJ |
14694 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14695 | "QPassSignals", "pass-signals", 0); | |
14696 | ||
82075af2 JS |
14697 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14698 | "QCatchSyscalls", "catch-syscalls", 0); | |
14699 | ||
9b224c5e PA |
14700 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14701 | "QProgramSignals", "program-signals", 0); | |
14702 | ||
bc3b087d SDJ |
14703 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
14704 | "QSetWorkingDir", "set-working-dir", 0); | |
14705 | ||
aefd8b33 SDJ |
14706 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14707 | "QStartupWithShell", "startup-with-shell", 0); | |
14708 | ||
0a2dde4a SDJ |
14709 | add_packet_config_cmd (&remote_protocol_packets |
14710 | [PACKET_QEnvironmentHexEncoded], | |
14711 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14712 | 0); | |
14713 | ||
14714 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14715 | "QEnvironmentReset", "environment-reset", | |
14716 | 0); | |
14717 | ||
14718 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14719 | "QEnvironmentUnset", "environment-unset", | |
14720 | 0); | |
14721 | ||
444abaca | 14722 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14723 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14724 | |
444abaca | 14725 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14726 | "P", "set-register", 1); |
d471ea57 | 14727 | |
444abaca | 14728 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14729 | "p", "fetch-register", 1); |
b96ec7ac | 14730 | |
444abaca | 14731 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14732 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14733 | |
444abaca | 14734 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14735 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14736 | |
444abaca | 14737 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14738 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14739 | |
444abaca | 14740 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14741 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14742 | |
444abaca | 14743 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14744 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14745 | |
0876f84a DJ |
14746 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14747 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14748 | |
c78fa86a GB |
14749 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14750 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14751 | ||
23181151 DJ |
14752 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14753 | "qXfer:features:read", "target-features", 0); | |
14754 | ||
cfa9d6d9 DJ |
14755 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14756 | "qXfer:libraries:read", "library-info", 0); | |
14757 | ||
2268b414 JK |
14758 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14759 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14760 | ||
fd79ecee DJ |
14761 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14762 | "qXfer:memory-map:read", "memory-map", 0); | |
14763 | ||
07e059b5 | 14764 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
dda83cd7 | 14765 | "qXfer:osdata:read", "osdata", 0); |
07e059b5 | 14766 | |
dc146f7c VP |
14767 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14768 | "qXfer:threads:read", "threads", 0); | |
14769 | ||
4aa995e1 | 14770 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
dda83cd7 | 14771 | "qXfer:siginfo:read", "read-siginfo-object", 0); |
4aa995e1 PA |
14772 | |
14773 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
dda83cd7 | 14774 | "qXfer:siginfo:write", "write-siginfo-object", 0); |
4aa995e1 | 14775 | |
b3b9301e PA |
14776 | add_packet_config_cmd |
14777 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14778 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14779 | |
169081d0 TG |
14780 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14781 | "qXfer:uib:read", "unwind-info-block", 0); | |
14782 | ||
444abaca | 14783 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14784 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14785 | 0); |
14786 | ||
711e434b PM |
14787 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14788 | "qGetTIBAddr", "get-thread-information-block-address", | |
14789 | 0); | |
14790 | ||
40ab02ce MS |
14791 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14792 | "bc", "reverse-continue", 0); | |
14793 | ||
14794 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14795 | "bs", "reverse-step", 0); | |
14796 | ||
be2a5f71 DJ |
14797 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14798 | "qSupported", "supported-packets", 0); | |
14799 | ||
08388c79 DE |
14800 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14801 | "qSearch:memory", "search-memory", 0); | |
14802 | ||
bd3eecc3 PA |
14803 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14804 | "qTStatus", "trace-status", 0); | |
14805 | ||
15a201c8 GB |
14806 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14807 | "vFile:setfs", "hostio-setfs", 0); | |
14808 | ||
a6b151f1 DJ |
14809 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14810 | "vFile:open", "hostio-open", 0); | |
14811 | ||
14812 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14813 | "vFile:pread", "hostio-pread", 0); | |
14814 | ||
14815 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14816 | "vFile:pwrite", "hostio-pwrite", 0); | |
14817 | ||
14818 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14819 | "vFile:close", "hostio-close", 0); | |
14820 | ||
14821 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14822 | "vFile:unlink", "hostio-unlink", 0); | |
14823 | ||
b9e7b9c3 UW |
14824 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14825 | "vFile:readlink", "hostio-readlink", 0); | |
14826 | ||
0a93529c GB |
14827 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14828 | "vFile:fstat", "hostio-fstat", 0); | |
14829 | ||
2d717e4f DJ |
14830 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14831 | "vAttach", "attach", 0); | |
14832 | ||
14833 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14834 | "vRun", "run", 0); | |
14835 | ||
a6f3e723 SL |
14836 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14837 | "QStartNoAckMode", "noack", 0); | |
14838 | ||
82f73884 PA |
14839 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14840 | "vKill", "kill", 0); | |
14841 | ||
0b16c5cf PA |
14842 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14843 | "qAttached", "query-attached", 0); | |
14844 | ||
782b2b07 | 14845 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14846 | "ConditionalTracepoints", |
14847 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14848 | |
14849 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14850 | "ConditionalBreakpoints", | |
14851 | "conditional-breakpoints", 0); | |
14852 | ||
d3ce09f5 SS |
14853 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14854 | "BreakpointCommands", | |
14855 | "breakpoint-commands", 0); | |
14856 | ||
7a697b8d SS |
14857 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14858 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14859 | |
409873ef SS |
14860 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14861 | "TracepointSource", "TracepointSource", 0); | |
14862 | ||
d914c394 SS |
14863 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14864 | "QAllow", "allow", 0); | |
14865 | ||
0fb4aa4b PA |
14866 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14867 | "StaticTracepoints", "static-tracepoints", 0); | |
14868 | ||
1e4d1764 YQ |
14869 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14870 | "InstallInTrace", "install-in-trace", 0); | |
14871 | ||
0fb4aa4b | 14872 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
dda83cd7 | 14873 | "qXfer:statictrace:read", "read-sdata-object", 0); |
0fb4aa4b | 14874 | |
78d85199 YQ |
14875 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14876 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14877 | ||
03583c20 UW |
14878 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14879 | "QDisableRandomization", "disable-randomization", 0); | |
14880 | ||
d1feda86 YQ |
14881 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14882 | "QAgent", "agent", 0); | |
14883 | ||
f6f899bf HAQ |
14884 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14885 | "QTBuffer:size", "trace-buffer-size", 0); | |
14886 | ||
9accd112 MM |
14887 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14888 | "Qbtrace:off", "disable-btrace", 0); | |
14889 | ||
14890 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14891 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14892 | ||
14893 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14894 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14895 | |
14896 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14897 | "qXfer:btrace", "read-btrace", 0); | |
14898 | ||
f4abbc16 MM |
14899 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14900 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14901 | ||
d33501a5 MM |
14902 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14903 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14904 | ||
73b8c1fd PA |
14905 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14906 | "multiprocess-feature", "multiprocess-feature", 0); | |
14907 | ||
f7e6eed5 | 14908 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
dda83cd7 | 14909 | "swbreak-feature", "swbreak-feature", 0); |
f7e6eed5 PA |
14910 | |
14911 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
dda83cd7 | 14912 | "hwbreak-feature", "hwbreak-feature", 0); |
f7e6eed5 | 14913 | |
89245bc0 DB |
14914 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14915 | "fork-event-feature", "fork-event-feature", 0); | |
14916 | ||
14917 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14918 | "vfork-event-feature", "vfork-event-feature", 0); | |
14919 | ||
b20a6524 MM |
14920 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14921 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14922 | ||
750ce8d1 YQ |
14923 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14924 | "vContSupported", "verbose-resume-supported", 0); | |
14925 | ||
94585166 DB |
14926 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14927 | "exec-event-feature", "exec-event-feature", 0); | |
14928 | ||
de979965 PA |
14929 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14930 | "vCtrlC", "ctrl-c", 0); | |
14931 | ||
65706a29 PA |
14932 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14933 | "QThreadEvents", "thread-events", 0); | |
14934 | ||
f2faf941 PA |
14935 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14936 | "N stop reply", "no-resumed-stop-reply", 0); | |
14937 | ||
0b736949 DB |
14938 | /* Assert that we've registered "set remote foo-packet" commands |
14939 | for all packet configs. */ | |
ca4f7f8b PA |
14940 | { |
14941 | int i; | |
14942 | ||
14943 | for (i = 0; i < PACKET_MAX; i++) | |
14944 | { | |
14945 | /* Ideally all configs would have a command associated. Some | |
14946 | still don't though. */ | |
14947 | int excepted; | |
14948 | ||
14949 | switch (i) | |
14950 | { | |
14951 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14952 | case PACKET_EnableDisableTracepoints_feature: |
14953 | case PACKET_tracenz_feature: | |
14954 | case PACKET_DisconnectedTracing_feature: | |
14955 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14956 | case PACKET_qCRC: |
14957 | /* Additions to this list need to be well justified: | |
14958 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14959 | excepted = 1; |
14960 | break; | |
14961 | default: | |
14962 | excepted = 0; | |
14963 | break; | |
14964 | } | |
14965 | ||
14966 | /* This catches both forgetting to add a config command, and | |
14967 | forgetting to remove a packet from the exception list. */ | |
14968 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14969 | } | |
14970 | } | |
14971 | ||
37a105a1 DJ |
14972 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14973 | Z sub-packet has its own set and show commands, but users may | |
14974 | have sets to this variable in their .gdbinit files (or in their | |
14975 | documentation). */ | |
e9e68a56 | 14976 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c | 14977 | &remote_Z_packet_detect, _("\ |
590042fc PW |
14978 | Set use of remote protocol `Z' packets."), _("\ |
14979 | Show use of remote protocol `Z' packets."), _("\ | |
3b64bf98 | 14980 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14981 | packets."), |
e9e68a56 | 14982 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14983 | show_remote_protocol_Z_packet_cmd, |
14984 | /* FIXME: i18n: Use of remote protocol | |
14985 | `Z' packets is %s. */ | |
e9e68a56 | 14986 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14987 | |
0743fc83 | 14988 | add_basic_prefix_cmd ("remote", class_files, _("\ |
590042fc | 14989 | Manipulate files on the remote system.\n\ |
a6b151f1 | 14990 | Transfer files to and from the remote target system."), |
0743fc83 TT |
14991 | &remote_cmdlist, "remote ", |
14992 | 0 /* allow-unknown */, &cmdlist); | |
a6b151f1 DJ |
14993 | |
14994 | add_cmd ("put", class_files, remote_put_command, | |
14995 | _("Copy a local file to the remote system."), | |
14996 | &remote_cmdlist); | |
14997 | ||
14998 | add_cmd ("get", class_files, remote_get_command, | |
14999 | _("Copy a remote file to the local system."), | |
15000 | &remote_cmdlist); | |
15001 | ||
15002 | add_cmd ("delete", class_files, remote_delete_command, | |
15003 | _("Delete a remote file."), | |
15004 | &remote_cmdlist); | |
15005 | ||
2d717e4f | 15006 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 15007 | &remote_exec_file_var, _("\ |
590042fc PW |
15008 | Set the remote pathname for \"run\"."), _("\ |
15009 | Show the remote pathname for \"run\"."), NULL, | |
94585166 DB |
15010 | set_remote_exec_file, |
15011 | show_remote_exec_file, | |
15012 | &remote_set_cmdlist, | |
15013 | &remote_show_cmdlist); | |
2d717e4f | 15014 | |
c1e36e3e PA |
15015 | add_setshow_boolean_cmd ("range-stepping", class_run, |
15016 | &use_range_stepping, _("\ | |
15017 | Enable or disable range stepping."), _("\ | |
15018 | Show whether target-assisted range stepping is enabled."), _("\ | |
15019 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
15020 | tells the target to step the corresponding range of addresses itself instead\n\ | |
15021 | of issuing multiple single-steps. This speeds up source level\n\ | |
15022 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
15023 | stepping is supported by the target. The default is on."), | |
15024 | set_range_stepping, | |
15025 | show_range_stepping, | |
15026 | &setlist, | |
15027 | &showlist); | |
15028 | ||
ed2b7c17 TT |
15029 | add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\ |
15030 | Set watchdog timer."), _("\ | |
15031 | Show watchdog timer."), _("\ | |
15032 | When non-zero, this timeout is used instead of waiting forever for a target\n\ | |
15033 | to finish a low-level step or continue operation. If the specified amount\n\ | |
15034 | of time passes without a response from the target, an error occurs."), | |
15035 | NULL, | |
15036 | show_watchdog, | |
15037 | &setlist, &showlist); | |
15038 | ||
6cc8564b LM |
15039 | add_setshow_zuinteger_unlimited_cmd ("remote-packet-max-chars", no_class, |
15040 | &remote_packet_max_chars, _("\ | |
15041 | Set the maximum number of characters to display for each remote packet."), _("\ | |
15042 | Show the maximum number of characters to display for each remote packet."), _("\ | |
15043 | Specify \"unlimited\" to display all the characters."), | |
15044 | NULL, show_remote_packet_max_chars, | |
15045 | &setdebuglist, &showdebuglist); | |
15046 | ||
449092f6 | 15047 | /* Eventually initialize fileio. See fileio.c */ |
3f4d92eb | 15048 | initialize_remote_fileio (&remote_set_cmdlist, &remote_show_cmdlist); |
c906108c | 15049 | } |