Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Remote target communications for serial-line targets in custom GDB protocol |
8926118c | 2 | |
42a4f53d | 3 | Copyright (C) 1988-2019 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 | |
43ff13b4 | 52 | #include "event-loop.h" |
c2c6d25f | 53 | #include "event-top.h" |
2acceee2 | 54 | #include "inf-loop.h" |
43ff13b4 | 55 | |
c906108c SS |
56 | #include <signal.h> |
57 | #include "serial.h" | |
58 | ||
6240bebf MS |
59 | #include "gdbcore.h" /* for exec_bfd */ |
60 | ||
449092f6 | 61 | #include "remote-fileio.h" |
a6b151f1 | 62 | #include "gdb/fileio.h" |
53ce3c39 | 63 | #include <sys/stat.h> |
dc146f7c | 64 | #include "xml-support.h" |
449092f6 | 65 | |
fd79ecee DJ |
66 | #include "memory-map.h" |
67 | ||
35b1e5cc SS |
68 | #include "tracepoint.h" |
69 | #include "ax.h" | |
70 | #include "ax-gdb.h" | |
268a13a5 | 71 | #include "gdbsupport/agent.h" |
9accd112 | 72 | #include "btrace.h" |
c0272db5 | 73 | #include "record-btrace.h" |
325fac50 | 74 | #include <algorithm> |
268a13a5 TT |
75 | #include "gdbsupport/scoped_restore.h" |
76 | #include "gdbsupport/environ.h" | |
77 | #include "gdbsupport/byte-vector.h" | |
9d6eea31 | 78 | #include <unordered_map> |
35b1e5cc | 79 | |
f6ac5f3d PA |
80 | /* The remote target. */ |
81 | ||
d9f719f1 PA |
82 | static const char remote_doc[] = N_("\ |
83 | Use a remote computer via a serial line, using a gdb-specific protocol.\n\ | |
84 | Specify the serial device it is connected to\n\ | |
85 | (e.g. /dev/ttyS0, /dev/ttya, COM1, etc.)."); | |
86 | ||
6b8edb51 PA |
87 | #define OPAQUETHREADBYTES 8 |
88 | ||
89 | /* a 64 bit opaque identifier */ | |
90 | typedef unsigned char threadref[OPAQUETHREADBYTES]; | |
91 | ||
92 | struct gdb_ext_thread_info; | |
93 | struct threads_listing_context; | |
94 | typedef int (*rmt_thread_action) (threadref *ref, void *context); | |
95 | struct protocol_feature; | |
96 | struct packet_reg; | |
97 | ||
98 | struct stop_reply; | |
32603266 | 99 | typedef std::unique_ptr<stop_reply> stop_reply_up; |
6b8edb51 PA |
100 | |
101 | /* Generic configuration support for packets the stub optionally | |
102 | supports. Allows the user to specify the use of the packet as well | |
103 | as allowing GDB to auto-detect support in the remote stub. */ | |
104 | ||
105 | enum packet_support | |
106 | { | |
107 | PACKET_SUPPORT_UNKNOWN = 0, | |
108 | PACKET_ENABLE, | |
109 | PACKET_DISABLE | |
110 | }; | |
111 | ||
112 | /* Analyze a packet's return value and update the packet config | |
113 | accordingly. */ | |
114 | ||
115 | enum packet_result | |
116 | { | |
117 | PACKET_ERROR, | |
118 | PACKET_OK, | |
119 | PACKET_UNKNOWN | |
120 | }; | |
121 | ||
122 | struct threads_listing_context; | |
3c69da40 PA |
123 | |
124 | /* Stub vCont actions support. | |
125 | ||
126 | Each field is a boolean flag indicating whether the stub reports | |
127 | support for the corresponding action. */ | |
128 | ||
129 | struct vCont_action_support | |
130 | { | |
131 | /* vCont;t */ | |
132 | bool t = false; | |
133 | ||
134 | /* vCont;r */ | |
135 | bool r = false; | |
136 | ||
137 | /* vCont;s */ | |
138 | bool s = false; | |
139 | ||
140 | /* vCont;S */ | |
141 | bool S = false; | |
142 | }; | |
143 | ||
144 | /* About this many threadisds fit in a packet. */ | |
145 | ||
146 | #define MAXTHREADLISTRESULTS 32 | |
147 | ||
148 | /* Data for the vFile:pread readahead cache. */ | |
149 | ||
150 | struct readahead_cache | |
151 | { | |
152 | /* Invalidate the readahead cache. */ | |
153 | void invalidate (); | |
154 | ||
155 | /* Invalidate the readahead cache if it is holding data for FD. */ | |
156 | void invalidate_fd (int fd); | |
157 | ||
158 | /* Serve pread from the readahead cache. Returns number of bytes | |
159 | read, or 0 if the request can't be served from the cache. */ | |
160 | int pread (int fd, gdb_byte *read_buf, size_t len, ULONGEST offset); | |
161 | ||
162 | /* The file descriptor for the file that is being cached. -1 if the | |
163 | cache is invalid. */ | |
164 | int fd = -1; | |
165 | ||
166 | /* The offset into the file that the cache buffer corresponds | |
167 | to. */ | |
168 | ULONGEST offset = 0; | |
169 | ||
170 | /* The buffer holding the cache contents. */ | |
171 | gdb_byte *buf = nullptr; | |
172 | /* The buffer's size. We try to read as much as fits into a packet | |
173 | at a time. */ | |
174 | size_t bufsize = 0; | |
175 | ||
176 | /* Cache hit and miss counters. */ | |
177 | ULONGEST hit_count = 0; | |
178 | ULONGEST miss_count = 0; | |
179 | }; | |
180 | ||
181 | /* Description of the remote protocol for a given architecture. */ | |
182 | ||
183 | struct packet_reg | |
184 | { | |
185 | long offset; /* Offset into G packet. */ | |
186 | long regnum; /* GDB's internal register number. */ | |
187 | LONGEST pnum; /* Remote protocol register number. */ | |
188 | int in_g_packet; /* Always part of G packet. */ | |
189 | /* long size in bytes; == register_size (target_gdbarch (), regnum); | |
190 | at present. */ | |
191 | /* char *name; == gdbarch_register_name (target_gdbarch (), regnum); | |
192 | at present. */ | |
193 | }; | |
194 | ||
195 | struct remote_arch_state | |
196 | { | |
197 | explicit remote_arch_state (struct gdbarch *gdbarch); | |
198 | ||
199 | /* Description of the remote protocol registers. */ | |
200 | long sizeof_g_packet; | |
201 | ||
202 | /* Description of the remote protocol registers indexed by REGNUM | |
203 | (making an array gdbarch_num_regs in size). */ | |
204 | std::unique_ptr<packet_reg[]> regs; | |
205 | ||
206 | /* This is the size (in chars) of the first response to the ``g'' | |
207 | packet. It is used as a heuristic when determining the maximum | |
208 | size of memory-read and memory-write packets. A target will | |
209 | typically only reserve a buffer large enough to hold the ``g'' | |
210 | packet. The size does not include packet overhead (headers and | |
211 | trailers). */ | |
212 | long actual_register_packet_size; | |
213 | ||
214 | /* This is the maximum size (in chars) of a non read/write packet. | |
215 | It is also used as a cap on the size of read/write packets. */ | |
216 | long remote_packet_size; | |
217 | }; | |
218 | ||
219 | /* Description of the remote protocol state for the currently | |
220 | connected target. This is per-target state, and independent of the | |
221 | selected architecture. */ | |
222 | ||
223 | class remote_state | |
224 | { | |
225 | public: | |
226 | ||
227 | remote_state (); | |
228 | ~remote_state (); | |
229 | ||
230 | /* Get the remote arch state for GDBARCH. */ | |
231 | struct remote_arch_state *get_remote_arch_state (struct gdbarch *gdbarch); | |
232 | ||
233 | public: /* data */ | |
234 | ||
235 | /* A buffer to use for incoming packets, and its current size. The | |
236 | buffer is grown dynamically for larger incoming packets. | |
237 | Outgoing packets may also be constructed in this buffer. | |
8d64371b | 238 | The size of the buffer is always at least REMOTE_PACKET_SIZE; |
3c69da40 PA |
239 | REMOTE_PACKET_SIZE should be used to limit the length of outgoing |
240 | packets. */ | |
8d64371b | 241 | gdb::char_vector buf; |
3c69da40 PA |
242 | |
243 | /* True if we're going through initial connection setup (finding out | |
244 | about the remote side's threads, relocating symbols, etc.). */ | |
245 | bool starting_up = false; | |
246 | ||
247 | /* If we negotiated packet size explicitly (and thus can bypass | |
248 | heuristics for the largest packet size that will not overflow | |
249 | a buffer in the stub), this will be set to that packet size. | |
250 | Otherwise zero, meaning to use the guessed size. */ | |
251 | long explicit_packet_size = 0; | |
252 | ||
253 | /* remote_wait is normally called when the target is running and | |
254 | waits for a stop reply packet. But sometimes we need to call it | |
255 | when the target is already stopped. We can send a "?" packet | |
256 | and have remote_wait read the response. Or, if we already have | |
257 | the response, we can stash it in BUF and tell remote_wait to | |
258 | skip calling getpkt. This flag is set when BUF contains a | |
259 | stop reply packet and the target is not waiting. */ | |
260 | int cached_wait_status = 0; | |
261 | ||
262 | /* True, if in no ack mode. That is, neither GDB nor the stub will | |
263 | expect acks from each other. The connection is assumed to be | |
264 | reliable. */ | |
265 | bool noack_mode = false; | |
266 | ||
267 | /* True if we're connected in extended remote mode. */ | |
268 | bool extended = false; | |
269 | ||
270 | /* True if we resumed the target and we're waiting for the target to | |
271 | stop. In the mean time, we can't start another command/query. | |
272 | The remote server wouldn't be ready to process it, so we'd | |
273 | timeout waiting for a reply that would never come and eventually | |
274 | we'd close the connection. This can happen in asynchronous mode | |
275 | because we allow GDB commands while the target is running. */ | |
276 | bool waiting_for_stop_reply = false; | |
277 | ||
278 | /* The status of the stub support for the various vCont actions. */ | |
279 | vCont_action_support supports_vCont; | |
280 | ||
281 | /* True if the user has pressed Ctrl-C, but the target hasn't | |
282 | responded to that. */ | |
283 | bool ctrlc_pending_p = false; | |
284 | ||
285 | /* True if we saw a Ctrl-C while reading or writing from/to the | |
286 | remote descriptor. At that point it is not safe to send a remote | |
287 | interrupt packet, so we instead remember we saw the Ctrl-C and | |
288 | process it once we're done with sending/receiving the current | |
289 | packet, which should be shortly. If however that takes too long, | |
290 | and the user presses Ctrl-C again, we offer to disconnect. */ | |
291 | bool got_ctrlc_during_io = false; | |
292 | ||
293 | /* Descriptor for I/O to remote machine. Initialize it to NULL so that | |
294 | remote_open knows that we don't have a file open when the program | |
295 | starts. */ | |
296 | struct serial *remote_desc = nullptr; | |
297 | ||
298 | /* These are the threads which we last sent to the remote system. The | |
299 | TID member will be -1 for all or -2 for not sent yet. */ | |
300 | ptid_t general_thread = null_ptid; | |
301 | ptid_t continue_thread = null_ptid; | |
302 | ||
303 | /* This is the traceframe which we last selected on the remote system. | |
304 | It will be -1 if no traceframe is selected. */ | |
305 | int remote_traceframe_number = -1; | |
306 | ||
307 | char *last_pass_packet = nullptr; | |
308 | ||
309 | /* The last QProgramSignals packet sent to the target. We bypass | |
310 | sending a new program signals list down to the target if the new | |
311 | packet is exactly the same as the last we sent. IOW, we only let | |
312 | the target know about program signals list changes. */ | |
313 | char *last_program_signals_packet = nullptr; | |
314 | ||
315 | gdb_signal last_sent_signal = GDB_SIGNAL_0; | |
316 | ||
317 | bool last_sent_step = false; | |
318 | ||
319 | /* The execution direction of the last resume we got. */ | |
320 | exec_direction_kind last_resume_exec_dir = EXEC_FORWARD; | |
321 | ||
322 | char *finished_object = nullptr; | |
323 | char *finished_annex = nullptr; | |
324 | ULONGEST finished_offset = 0; | |
325 | ||
326 | /* Should we try the 'ThreadInfo' query packet? | |
327 | ||
328 | This variable (NOT available to the user: auto-detect only!) | |
329 | determines whether GDB will use the new, simpler "ThreadInfo" | |
330 | query or the older, more complex syntax for thread queries. | |
331 | This is an auto-detect variable (set to true at each connect, | |
332 | and set to false when the target fails to recognize it). */ | |
333 | bool use_threadinfo_query = false; | |
334 | bool use_threadextra_query = false; | |
335 | ||
336 | threadref echo_nextthread {}; | |
337 | threadref nextthread {}; | |
338 | threadref resultthreadlist[MAXTHREADLISTRESULTS] {}; | |
339 | ||
340 | /* The state of remote notification. */ | |
341 | struct remote_notif_state *notif_state = nullptr; | |
342 | ||
343 | /* The branch trace configuration. */ | |
344 | struct btrace_config btrace_config {}; | |
345 | ||
346 | /* The argument to the last "vFile:setfs:" packet we sent, used | |
347 | to avoid sending repeated unnecessary "vFile:setfs:" packets. | |
348 | Initialized to -1 to indicate that no "vFile:setfs:" packet | |
349 | has yet been sent. */ | |
350 | int fs_pid = -1; | |
351 | ||
352 | /* A readahead cache for vFile:pread. Often, reading a binary | |
353 | involves a sequence of small reads. E.g., when parsing an ELF | |
354 | file. A readahead cache helps mostly the case of remote | |
355 | debugging on a connection with higher latency, due to the | |
356 | request/reply nature of the RSP. We only cache data for a single | |
357 | file descriptor at a time. */ | |
358 | struct readahead_cache readahead_cache; | |
359 | ||
360 | /* The list of already fetched and acknowledged stop events. This | |
361 | queue is used for notification Stop, and other notifications | |
362 | don't need queue for their events, because the notification | |
363 | events of Stop can't be consumed immediately, so that events | |
364 | should be queued first, and be consumed by remote_wait_{ns,as} | |
365 | one per time. Other notifications can consume their events | |
366 | immediately, so queue is not needed for them. */ | |
953edf2b | 367 | std::vector<stop_reply_up> stop_reply_queue; |
3c69da40 PA |
368 | |
369 | /* Asynchronous signal handle registered as event loop source for | |
370 | when we have pending events ready to be passed to the core. */ | |
371 | struct async_event_handler *remote_async_inferior_event_token = nullptr; | |
372 | ||
373 | /* FIXME: cagney/1999-09-23: Even though getpkt was called with | |
374 | ``forever'' still use the normal timeout mechanism. This is | |
375 | currently used by the ASYNC code to guarentee that target reads | |
376 | during the initial connect always time-out. Once getpkt has been | |
377 | modified to return a timeout indication and, in turn | |
378 | remote_wait()/wait_for_inferior() have gained a timeout parameter | |
379 | this can go away. */ | |
380 | int wait_forever_enabled_p = 1; | |
381 | ||
382 | private: | |
383 | /* Mapping of remote protocol data for each gdbarch. Usually there | |
384 | is only one entry here, though we may see more with stubs that | |
385 | support multi-process. */ | |
386 | std::unordered_map<struct gdbarch *, remote_arch_state> | |
387 | m_arch_states; | |
388 | }; | |
6b8edb51 | 389 | |
d9f719f1 PA |
390 | static const target_info remote_target_info = { |
391 | "remote", | |
392 | N_("Remote serial target in gdb-specific protocol"), | |
393 | remote_doc | |
394 | }; | |
395 | ||
3b3dac9b | 396 | class remote_target : public process_stratum_target |
f6ac5f3d PA |
397 | { |
398 | public: | |
3b3dac9b | 399 | remote_target () = default; |
6b8edb51 | 400 | ~remote_target () override; |
f6ac5f3d | 401 | |
d9f719f1 PA |
402 | const target_info &info () const override |
403 | { return remote_target_info; } | |
f6ac5f3d PA |
404 | |
405 | thread_control_capabilities get_thread_control_capabilities () override | |
406 | { return tc_schedlock; } | |
407 | ||
d9f719f1 PA |
408 | /* Open a remote connection. */ |
409 | static void open (const char *, int); | |
410 | ||
f6ac5f3d PA |
411 | void close () override; |
412 | ||
413 | void detach (inferior *, int) override; | |
414 | void disconnect (const char *, int) override; | |
415 | ||
416 | void commit_resume () override; | |
417 | void resume (ptid_t, int, enum gdb_signal) override; | |
418 | ptid_t wait (ptid_t, struct target_waitstatus *, int) override; | |
419 | ||
420 | void fetch_registers (struct regcache *, int) override; | |
421 | void store_registers (struct regcache *, int) override; | |
422 | void prepare_to_store (struct regcache *) override; | |
423 | ||
424 | void files_info () override; | |
425 | ||
426 | int insert_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
427 | ||
428 | int remove_breakpoint (struct gdbarch *, struct bp_target_info *, | |
429 | enum remove_bp_reason) override; | |
430 | ||
431 | ||
57810aa7 PA |
432 | bool stopped_by_sw_breakpoint () override; |
433 | bool supports_stopped_by_sw_breakpoint () override; | |
f6ac5f3d | 434 | |
57810aa7 | 435 | bool stopped_by_hw_breakpoint () override; |
f6ac5f3d | 436 | |
57810aa7 | 437 | bool supports_stopped_by_hw_breakpoint () override; |
f6ac5f3d | 438 | |
57810aa7 | 439 | bool stopped_by_watchpoint () override; |
f6ac5f3d | 440 | |
57810aa7 | 441 | bool stopped_data_address (CORE_ADDR *) override; |
f6ac5f3d | 442 | |
57810aa7 | 443 | bool watchpoint_addr_within_range (CORE_ADDR, CORE_ADDR, int) override; |
f6ac5f3d PA |
444 | |
445 | int can_use_hw_breakpoint (enum bptype, int, int) override; | |
446 | ||
447 | int insert_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
448 | ||
449 | int remove_hw_breakpoint (struct gdbarch *, struct bp_target_info *) override; | |
450 | ||
451 | int region_ok_for_hw_watchpoint (CORE_ADDR, int) override; | |
452 | ||
453 | int insert_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
454 | struct expression *) override; | |
455 | ||
456 | int remove_watchpoint (CORE_ADDR, int, enum target_hw_bp_type, | |
457 | struct expression *) override; | |
458 | ||
459 | void kill () override; | |
460 | ||
461 | void load (const char *, int) override; | |
462 | ||
463 | void mourn_inferior () override; | |
464 | ||
adc6a863 | 465 | void pass_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d PA |
466 | |
467 | int set_syscall_catchpoint (int, bool, int, | |
468 | gdb::array_view<const int>) override; | |
469 | ||
adc6a863 | 470 | void program_signals (gdb::array_view<const unsigned char>) override; |
f6ac5f3d | 471 | |
57810aa7 | 472 | bool thread_alive (ptid_t ptid) override; |
f6ac5f3d PA |
473 | |
474 | const char *thread_name (struct thread_info *) override; | |
475 | ||
476 | void update_thread_list () override; | |
477 | ||
a068643d | 478 | std::string pid_to_str (ptid_t) override; |
f6ac5f3d PA |
479 | |
480 | const char *extra_thread_info (struct thread_info *) override; | |
481 | ||
482 | ptid_t get_ada_task_ptid (long lwp, long thread) override; | |
483 | ||
484 | thread_info *thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
485 | int handle_len, | |
486 | inferior *inf) override; | |
487 | ||
3d6c6204 KB |
488 | gdb::byte_vector thread_info_to_thread_handle (struct thread_info *tp) |
489 | override; | |
490 | ||
f6ac5f3d PA |
491 | void stop (ptid_t) override; |
492 | ||
493 | void interrupt () override; | |
494 | ||
495 | void pass_ctrlc () override; | |
496 | ||
497 | enum target_xfer_status xfer_partial (enum target_object object, | |
498 | const char *annex, | |
499 | gdb_byte *readbuf, | |
500 | const gdb_byte *writebuf, | |
501 | ULONGEST offset, ULONGEST len, | |
502 | ULONGEST *xfered_len) override; | |
503 | ||
504 | ULONGEST get_memory_xfer_limit () override; | |
505 | ||
506 | void rcmd (const char *command, struct ui_file *output) override; | |
507 | ||
508 | char *pid_to_exec_file (int pid) override; | |
509 | ||
510 | void log_command (const char *cmd) override | |
511 | { | |
512 | serial_log_command (this, cmd); | |
513 | } | |
514 | ||
515 | CORE_ADDR get_thread_local_address (ptid_t ptid, | |
516 | CORE_ADDR load_module_addr, | |
517 | CORE_ADDR offset) override; | |
518 | ||
57810aa7 | 519 | bool can_execute_reverse () override; |
f6ac5f3d PA |
520 | |
521 | std::vector<mem_region> memory_map () override; | |
522 | ||
523 | void flash_erase (ULONGEST address, LONGEST length) override; | |
524 | ||
525 | void flash_done () override; | |
526 | ||
527 | const struct target_desc *read_description () override; | |
528 | ||
529 | int search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
530 | const gdb_byte *pattern, ULONGEST pattern_len, | |
531 | CORE_ADDR *found_addrp) override; | |
532 | ||
57810aa7 | 533 | bool can_async_p () override; |
f6ac5f3d | 534 | |
57810aa7 | 535 | bool is_async_p () override; |
f6ac5f3d PA |
536 | |
537 | void async (int) override; | |
538 | ||
539 | void thread_events (int) override; | |
540 | ||
541 | int can_do_single_step () override; | |
542 | ||
543 | void terminal_inferior () override; | |
544 | ||
545 | void terminal_ours () override; | |
546 | ||
57810aa7 | 547 | bool supports_non_stop () override; |
f6ac5f3d | 548 | |
57810aa7 | 549 | bool supports_multi_process () override; |
f6ac5f3d | 550 | |
57810aa7 | 551 | bool supports_disable_randomization () override; |
f6ac5f3d | 552 | |
57810aa7 | 553 | bool filesystem_is_local () override; |
f6ac5f3d PA |
554 | |
555 | ||
556 | int fileio_open (struct inferior *inf, const char *filename, | |
557 | int flags, int mode, int warn_if_slow, | |
558 | int *target_errno) override; | |
559 | ||
560 | int fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
561 | ULONGEST offset, int *target_errno) override; | |
562 | ||
563 | int fileio_pread (int fd, gdb_byte *read_buf, int len, | |
564 | ULONGEST offset, int *target_errno) override; | |
565 | ||
566 | int fileio_fstat (int fd, struct stat *sb, int *target_errno) override; | |
567 | ||
568 | int fileio_close (int fd, int *target_errno) override; | |
569 | ||
570 | int fileio_unlink (struct inferior *inf, | |
571 | const char *filename, | |
572 | int *target_errno) override; | |
573 | ||
574 | gdb::optional<std::string> | |
575 | fileio_readlink (struct inferior *inf, | |
576 | const char *filename, | |
577 | int *target_errno) override; | |
578 | ||
57810aa7 | 579 | bool supports_enable_disable_tracepoint () override; |
f6ac5f3d | 580 | |
57810aa7 | 581 | bool supports_string_tracing () override; |
f6ac5f3d | 582 | |
57810aa7 | 583 | bool supports_evaluation_of_breakpoint_conditions () override; |
f6ac5f3d | 584 | |
57810aa7 | 585 | bool can_run_breakpoint_commands () override; |
f6ac5f3d PA |
586 | |
587 | void trace_init () override; | |
588 | ||
589 | void download_tracepoint (struct bp_location *location) override; | |
590 | ||
57810aa7 | 591 | bool can_download_tracepoint () override; |
f6ac5f3d PA |
592 | |
593 | void download_trace_state_variable (const trace_state_variable &tsv) override; | |
594 | ||
595 | void enable_tracepoint (struct bp_location *location) override; | |
596 | ||
597 | void disable_tracepoint (struct bp_location *location) override; | |
598 | ||
599 | void trace_set_readonly_regions () override; | |
600 | ||
601 | void trace_start () override; | |
602 | ||
603 | int get_trace_status (struct trace_status *ts) override; | |
604 | ||
605 | void get_tracepoint_status (struct breakpoint *tp, struct uploaded_tp *utp) | |
606 | override; | |
607 | ||
608 | void trace_stop () override; | |
609 | ||
610 | int trace_find (enum trace_find_type type, int num, | |
611 | CORE_ADDR addr1, CORE_ADDR addr2, int *tpp) override; | |
612 | ||
57810aa7 | 613 | bool get_trace_state_variable_value (int tsv, LONGEST *val) override; |
f6ac5f3d PA |
614 | |
615 | int save_trace_data (const char *filename) override; | |
616 | ||
617 | int upload_tracepoints (struct uploaded_tp **utpp) override; | |
618 | ||
619 | int upload_trace_state_variables (struct uploaded_tsv **utsvp) override; | |
620 | ||
621 | LONGEST get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) override; | |
622 | ||
623 | int get_min_fast_tracepoint_insn_len () override; | |
624 | ||
625 | void set_disconnected_tracing (int val) override; | |
626 | ||
627 | void set_circular_trace_buffer (int val) override; | |
628 | ||
629 | void set_trace_buffer_size (LONGEST val) override; | |
630 | ||
57810aa7 PA |
631 | bool set_trace_notes (const char *user, const char *notes, |
632 | const char *stopnotes) override; | |
f6ac5f3d PA |
633 | |
634 | int core_of_thread (ptid_t ptid) override; | |
635 | ||
636 | int verify_memory (const gdb_byte *data, | |
637 | CORE_ADDR memaddr, ULONGEST size) override; | |
638 | ||
639 | ||
57810aa7 | 640 | bool get_tib_address (ptid_t ptid, CORE_ADDR *addr) override; |
f6ac5f3d PA |
641 | |
642 | void set_permissions () override; | |
643 | ||
644 | bool static_tracepoint_marker_at (CORE_ADDR, | |
645 | struct static_tracepoint_marker *marker) | |
646 | override; | |
647 | ||
648 | std::vector<static_tracepoint_marker> | |
649 | static_tracepoint_markers_by_strid (const char *id) override; | |
650 | ||
651 | traceframe_info_up traceframe_info () override; | |
652 | ||
57810aa7 PA |
653 | bool use_agent (bool use) override; |
654 | bool can_use_agent () override; | |
f6ac5f3d PA |
655 | |
656 | struct btrace_target_info *enable_btrace (ptid_t ptid, | |
657 | const struct btrace_config *conf) override; | |
658 | ||
659 | void disable_btrace (struct btrace_target_info *tinfo) override; | |
660 | ||
661 | void teardown_btrace (struct btrace_target_info *tinfo) override; | |
662 | ||
663 | enum btrace_error read_btrace (struct btrace_data *data, | |
664 | struct btrace_target_info *btinfo, | |
665 | enum btrace_read_type type) override; | |
666 | ||
667 | const struct btrace_config *btrace_conf (const struct btrace_target_info *) override; | |
57810aa7 | 668 | bool augmented_libraries_svr4_read () override; |
f6ac5f3d | 669 | int follow_fork (int, int) override; |
4ca51187 | 670 | void follow_exec (struct inferior *, const char *) override; |
f6ac5f3d PA |
671 | int insert_fork_catchpoint (int) override; |
672 | int remove_fork_catchpoint (int) override; | |
673 | int insert_vfork_catchpoint (int) override; | |
674 | int remove_vfork_catchpoint (int) override; | |
675 | int insert_exec_catchpoint (int) override; | |
676 | int remove_exec_catchpoint (int) override; | |
677 | enum exec_direction_kind execution_direction () override; | |
678 | ||
6b8edb51 PA |
679 | public: /* Remote specific methods. */ |
680 | ||
681 | void remote_download_command_source (int num, ULONGEST addr, | |
682 | struct command_line *cmds); | |
683 | ||
684 | void remote_file_put (const char *local_file, const char *remote_file, | |
685 | int from_tty); | |
686 | void remote_file_get (const char *remote_file, const char *local_file, | |
687 | int from_tty); | |
688 | void remote_file_delete (const char *remote_file, int from_tty); | |
689 | ||
690 | int remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
691 | ULONGEST offset, int *remote_errno); | |
692 | int remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
693 | ULONGEST offset, int *remote_errno); | |
694 | int remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
695 | ULONGEST offset, int *remote_errno); | |
696 | ||
697 | int remote_hostio_send_command (int command_bytes, int which_packet, | |
698 | int *remote_errno, char **attachment, | |
699 | int *attachment_len); | |
700 | int remote_hostio_set_filesystem (struct inferior *inf, | |
701 | int *remote_errno); | |
702 | /* We should get rid of this and use fileio_open directly. */ | |
703 | int remote_hostio_open (struct inferior *inf, const char *filename, | |
704 | int flags, int mode, int warn_if_slow, | |
705 | int *remote_errno); | |
706 | int remote_hostio_close (int fd, int *remote_errno); | |
707 | ||
708 | int remote_hostio_unlink (inferior *inf, const char *filename, | |
709 | int *remote_errno); | |
710 | ||
711 | struct remote_state *get_remote_state (); | |
712 | ||
713 | long get_remote_packet_size (void); | |
714 | long get_memory_packet_size (struct memory_packet_config *config); | |
715 | ||
716 | long get_memory_write_packet_size (); | |
717 | long get_memory_read_packet_size (); | |
718 | ||
719 | char *append_pending_thread_resumptions (char *p, char *endp, | |
720 | ptid_t ptid); | |
d9f719f1 | 721 | static void open_1 (const char *name, int from_tty, int extended_p); |
f6ac5f3d | 722 | void start_remote (int from_tty, int extended_p); |
00431a78 | 723 | void remote_detach_1 (struct inferior *inf, int from_tty); |
6b8edb51 PA |
724 | |
725 | char *append_resumption (char *p, char *endp, | |
726 | ptid_t ptid, int step, gdb_signal siggnal); | |
727 | int remote_resume_with_vcont (ptid_t ptid, int step, | |
728 | gdb_signal siggnal); | |
729 | ||
730 | void add_current_inferior_and_thread (char *wait_status); | |
731 | ||
732 | ptid_t wait_ns (ptid_t ptid, struct target_waitstatus *status, | |
733 | int options); | |
734 | ptid_t wait_as (ptid_t ptid, target_waitstatus *status, | |
735 | int options); | |
736 | ||
737 | ptid_t process_stop_reply (struct stop_reply *stop_reply, | |
738 | target_waitstatus *status); | |
739 | ||
740 | void remote_notice_new_inferior (ptid_t currthread, int executing); | |
741 | ||
742 | void process_initial_stop_replies (int from_tty); | |
743 | ||
00431a78 | 744 | thread_info *remote_add_thread (ptid_t ptid, bool running, bool executing); |
6b8edb51 PA |
745 | |
746 | void btrace_sync_conf (const btrace_config *conf); | |
747 | ||
748 | void remote_btrace_maybe_reopen (); | |
749 | ||
750 | void remove_new_fork_children (threads_listing_context *context); | |
751 | void kill_new_fork_children (int pid); | |
752 | void discard_pending_stop_replies (struct inferior *inf); | |
753 | int stop_reply_queue_length (); | |
754 | ||
755 | void check_pending_events_prevent_wildcard_vcont | |
756 | (int *may_global_wildcard_vcont); | |
757 | ||
758 | void discard_pending_stop_replies_in_queue (); | |
759 | struct stop_reply *remote_notif_remove_queued_reply (ptid_t ptid); | |
760 | struct stop_reply *queued_stop_reply (ptid_t ptid); | |
761 | int peek_stop_reply (ptid_t ptid); | |
bb277751 | 762 | void remote_parse_stop_reply (const char *buf, stop_reply *event); |
6b8edb51 PA |
763 | |
764 | void remote_stop_ns (ptid_t ptid); | |
765 | void remote_interrupt_as (); | |
766 | void remote_interrupt_ns (); | |
767 | ||
768 | char *remote_get_noisy_reply (); | |
769 | int remote_query_attached (int pid); | |
9ab8741a | 770 | inferior *remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 PA |
771 | int try_open_exec); |
772 | ||
773 | ptid_t remote_current_thread (ptid_t oldpid); | |
774 | ptid_t get_current_thread (char *wait_status); | |
775 | ||
776 | void set_thread (ptid_t ptid, int gen); | |
777 | void set_general_thread (ptid_t ptid); | |
778 | void set_continue_thread (ptid_t ptid); | |
779 | void set_general_process (); | |
780 | ||
781 | char *write_ptid (char *buf, const char *endbuf, ptid_t ptid); | |
782 | ||
783 | int remote_unpack_thread_info_response (char *pkt, threadref *expectedref, | |
784 | gdb_ext_thread_info *info); | |
785 | int remote_get_threadinfo (threadref *threadid, int fieldset, | |
786 | gdb_ext_thread_info *info); | |
787 | ||
788 | int parse_threadlist_response (char *pkt, int result_limit, | |
789 | threadref *original_echo, | |
790 | threadref *resultlist, | |
791 | int *doneflag); | |
792 | int remote_get_threadlist (int startflag, threadref *nextthread, | |
793 | int result_limit, int *done, int *result_count, | |
794 | threadref *threadlist); | |
795 | ||
796 | int remote_threadlist_iterator (rmt_thread_action stepfunction, | |
797 | void *context, int looplimit); | |
798 | ||
799 | int remote_get_threads_with_ql (threads_listing_context *context); | |
800 | int remote_get_threads_with_qxfer (threads_listing_context *context); | |
801 | int remote_get_threads_with_qthreadinfo (threads_listing_context *context); | |
802 | ||
803 | void extended_remote_restart (); | |
804 | ||
805 | void get_offsets (); | |
806 | ||
807 | void remote_check_symbols (); | |
808 | ||
809 | void remote_supported_packet (const struct protocol_feature *feature, | |
810 | enum packet_support support, | |
811 | const char *argument); | |
812 | ||
813 | void remote_query_supported (); | |
814 | ||
815 | void remote_packet_size (const protocol_feature *feature, | |
816 | packet_support support, const char *value); | |
817 | ||
818 | void remote_serial_quit_handler (); | |
819 | ||
820 | void remote_detach_pid (int pid); | |
821 | ||
822 | void remote_vcont_probe (); | |
823 | ||
824 | void remote_resume_with_hc (ptid_t ptid, int step, | |
825 | gdb_signal siggnal); | |
826 | ||
827 | void send_interrupt_sequence (); | |
828 | void interrupt_query (); | |
829 | ||
830 | void remote_notif_get_pending_events (notif_client *nc); | |
831 | ||
832 | int fetch_register_using_p (struct regcache *regcache, | |
833 | packet_reg *reg); | |
834 | int send_g_packet (); | |
835 | void process_g_packet (struct regcache *regcache); | |
836 | void fetch_registers_using_g (struct regcache *regcache); | |
837 | int store_register_using_P (const struct regcache *regcache, | |
838 | packet_reg *reg); | |
839 | void store_registers_using_G (const struct regcache *regcache); | |
840 | ||
841 | void set_remote_traceframe (); | |
842 | ||
843 | void check_binary_download (CORE_ADDR addr); | |
844 | ||
845 | target_xfer_status remote_write_bytes_aux (const char *header, | |
846 | CORE_ADDR memaddr, | |
847 | const gdb_byte *myaddr, | |
848 | ULONGEST len_units, | |
849 | int unit_size, | |
850 | ULONGEST *xfered_len_units, | |
851 | char packet_format, | |
852 | int use_length); | |
853 | ||
854 | target_xfer_status remote_write_bytes (CORE_ADDR memaddr, | |
855 | const gdb_byte *myaddr, ULONGEST len, | |
856 | int unit_size, ULONGEST *xfered_len); | |
857 | ||
858 | target_xfer_status remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
859 | ULONGEST len_units, | |
860 | int unit_size, ULONGEST *xfered_len_units); | |
861 | ||
862 | target_xfer_status remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
863 | ULONGEST memaddr, | |
864 | ULONGEST len, | |
865 | int unit_size, | |
866 | ULONGEST *xfered_len); | |
867 | ||
868 | target_xfer_status remote_read_bytes (CORE_ADDR memaddr, | |
869 | gdb_byte *myaddr, ULONGEST len, | |
870 | int unit_size, | |
871 | ULONGEST *xfered_len); | |
872 | ||
873 | packet_result remote_send_printf (const char *format, ...) | |
874 | ATTRIBUTE_PRINTF (2, 3); | |
875 | ||
876 | target_xfer_status remote_flash_write (ULONGEST address, | |
877 | ULONGEST length, ULONGEST *xfered_len, | |
878 | const gdb_byte *data); | |
879 | ||
880 | int readchar (int timeout); | |
881 | ||
882 | void remote_serial_write (const char *str, int len); | |
883 | ||
884 | int putpkt (const char *buf); | |
885 | int putpkt_binary (const char *buf, int cnt); | |
886 | ||
8d64371b TT |
887 | int putpkt (const gdb::char_vector &buf) |
888 | { | |
889 | return putpkt (buf.data ()); | |
890 | } | |
891 | ||
6b8edb51 | 892 | void skip_frame (); |
8d64371b TT |
893 | long read_frame (gdb::char_vector *buf_p); |
894 | void getpkt (gdb::char_vector *buf, int forever); | |
895 | int getpkt_or_notif_sane_1 (gdb::char_vector *buf, int forever, | |
6b8edb51 | 896 | int expecting_notif, int *is_notif); |
8d64371b TT |
897 | int getpkt_sane (gdb::char_vector *buf, int forever); |
898 | int getpkt_or_notif_sane (gdb::char_vector *buf, int forever, | |
6b8edb51 PA |
899 | int *is_notif); |
900 | int remote_vkill (int pid); | |
901 | void remote_kill_k (); | |
902 | ||
903 | void extended_remote_disable_randomization (int val); | |
904 | int extended_remote_run (const std::string &args); | |
905 | ||
906 | void send_environment_packet (const char *action, | |
907 | const char *packet, | |
908 | const char *value); | |
909 | ||
910 | void extended_remote_environment_support (); | |
3c69da40 | 911 | void extended_remote_set_inferior_cwd (); |
80152258 | 912 | |
3c69da40 PA |
913 | target_xfer_status remote_write_qxfer (const char *object_name, |
914 | const char *annex, | |
915 | const gdb_byte *writebuf, | |
916 | ULONGEST offset, LONGEST len, | |
917 | ULONGEST *xfered_len, | |
918 | struct packet_config *packet); | |
43c3a0e4 | 919 | |
3c69da40 PA |
920 | target_xfer_status remote_read_qxfer (const char *object_name, |
921 | const char *annex, | |
922 | gdb_byte *readbuf, ULONGEST offset, | |
923 | LONGEST len, | |
924 | ULONGEST *xfered_len, | |
925 | struct packet_config *packet); | |
43c3a0e4 | 926 | |
3c69da40 | 927 | void push_stop_reply (struct stop_reply *new_event); |
43c3a0e4 | 928 | |
3c69da40 | 929 | bool vcont_r_supported (); |
43c3a0e4 | 930 | |
3c69da40 | 931 | void packet_command (const char *args, int from_tty); |
43c3a0e4 | 932 | |
3c69da40 | 933 | private: /* data fields */ |
43c3a0e4 | 934 | |
3c69da40 PA |
935 | /* The remote state. Don't reference this directly. Use the |
936 | get_remote_state method instead. */ | |
937 | remote_state m_remote_state; | |
43c3a0e4 PA |
938 | }; |
939 | ||
3c69da40 PA |
940 | static const target_info extended_remote_target_info = { |
941 | "extended-remote", | |
942 | N_("Extended remote serial target in gdb-specific protocol"), | |
943 | remote_doc | |
944 | }; | |
ea9c271d | 945 | |
3c69da40 PA |
946 | /* Set up the extended remote target by extending the standard remote |
947 | target and adding to it. */ | |
948 | ||
949 | class extended_remote_target final : public remote_target | |
ea9c271d | 950 | { |
9d6eea31 | 951 | public: |
3c69da40 PA |
952 | const target_info &info () const override |
953 | { return extended_remote_target_info; } | |
9d6eea31 | 954 | |
3c69da40 PA |
955 | /* Open an extended-remote connection. */ |
956 | static void open (const char *, int); | |
de44f5a7 | 957 | |
3c69da40 PA |
958 | bool can_create_inferior () override { return true; } |
959 | void create_inferior (const char *, const std::string &, | |
960 | char **, int) override; | |
9d6eea31 | 961 | |
3c69da40 | 962 | void detach (inferior *, int) override; |
9d6eea31 | 963 | |
3c69da40 PA |
964 | bool can_attach () override { return true; } |
965 | void attach (const char *, int) override; | |
be2a5f71 | 966 | |
3c69da40 PA |
967 | void post_attach (int) override; |
968 | bool supports_disable_randomization () override; | |
969 | }; | |
1e51243a | 970 | |
3c69da40 | 971 | /* Per-program-space data key. */ |
7b4a314f TT |
972 | static const struct program_space_key<char, gdb::xfree_deleter<char>> |
973 | remote_pspace_data; | |
2d717e4f | 974 | |
3c69da40 PA |
975 | /* The variable registered as the control variable used by the |
976 | remote exec-file commands. While the remote exec-file setting is | |
977 | per-program-space, the set/show machinery uses this as the | |
978 | location of the remote exec-file value. */ | |
979 | static char *remote_exec_file_var; | |
a6f3e723 | 980 | |
3c69da40 PA |
981 | /* The size to align memory write packets, when practical. The protocol |
982 | does not guarantee any alignment, and gdb will generate short | |
983 | writes and unaligned writes, but even as a best-effort attempt this | |
984 | can improve bulk transfers. For instance, if a write is misaligned | |
985 | relative to the target's data bus, the stub may need to make an extra | |
986 | round trip fetching data from the target. This doesn't make a | |
987 | huge difference, but it's easy to do, so we try to be helpful. | |
82f73884 | 988 | |
3c69da40 PA |
989 | The alignment chosen is arbitrary; usually data bus width is |
990 | important here, not the possibly larger cache line size. */ | |
991 | enum { REMOTE_ALIGN_WRITES = 16 }; | |
82f73884 | 992 | |
3c69da40 | 993 | /* Prototypes for local functions. */ |
74531fed | 994 | |
3c69da40 | 995 | static int hexnumlen (ULONGEST num); |
782b2b07 | 996 | |
3c69da40 | 997 | static int stubhex (int ch); |
5d93a237 | 998 | |
3c69da40 | 999 | static int hexnumstr (char *, ULONGEST); |
048094ac | 1000 | |
3c69da40 | 1001 | static int hexnumnstr (char *, ULONGEST, int); |
47f8a51d | 1002 | |
3c69da40 | 1003 | static CORE_ADDR remote_address_masked (CORE_ADDR); |
262e1174 | 1004 | |
3c69da40 | 1005 | static void print_packet (const char *); |
747dc59d | 1006 | |
3c69da40 | 1007 | static int stub_unpack_int (char *buff, int fieldlength); |
5e4a05c4 | 1008 | |
3c69da40 | 1009 | struct packet_config; |
b73be471 | 1010 | |
3c69da40 | 1011 | static void show_packet_config_cmd (struct packet_config *config); |
280ceea3 | 1012 | |
3c69da40 PA |
1013 | static void show_remote_protocol_packet_cmd (struct ui_file *file, |
1014 | int from_tty, | |
1015 | struct cmd_list_element *c, | |
1016 | const char *value); | |
8e88304f | 1017 | |
3c69da40 | 1018 | static ptid_t read_ptid (const char *buf, const char **obuf); |
3a00c802 | 1019 | |
3c69da40 | 1020 | static void remote_async_inferior_event_handler (gdb_client_data); |
b80fafe3 | 1021 | |
eefce37f | 1022 | static bool remote_read_description_p (struct target_ops *target); |
88b496c3 | 1023 | |
05be00a8 | 1024 | static void remote_console_output (const char *msg); |
5965e028 | 1025 | |
3c69da40 | 1026 | static void remote_btrace_reset (remote_state *rs); |
f4abbc16 | 1027 | |
3c69da40 | 1028 | static void remote_unpush_and_throw (void); |
15a201c8 | 1029 | |
3c69da40 | 1030 | /* For "remote". */ |
80152258 | 1031 | |
3c69da40 | 1032 | static struct cmd_list_element *remote_cmdlist; |
9d6eea31 | 1033 | |
3c69da40 | 1034 | /* For "set remote" and "show remote". */ |
6b8edb51 | 1035 | |
3c69da40 PA |
1036 | static struct cmd_list_element *remote_set_cmdlist; |
1037 | static struct cmd_list_element *remote_show_cmdlist; | |
6b8edb51 | 1038 | |
3c69da40 | 1039 | /* Controls whether GDB is willing to use range stepping. */ |
6b8edb51 | 1040 | |
491144b5 | 1041 | static bool use_range_stepping = true; |
3c69da40 PA |
1042 | |
1043 | /* The max number of chars in debug output. The rest of chars are | |
1044 | omitted. */ | |
1045 | ||
1046 | #define REMOTE_DEBUG_MAX_CHAR 512 | |
ea9c271d | 1047 | |
7aabaf9d SM |
1048 | /* Private data that we'll store in (struct thread_info)->priv. */ |
1049 | struct remote_thread_info : public private_thread_info | |
dc146f7c | 1050 | { |
7aabaf9d SM |
1051 | std::string extra; |
1052 | std::string name; | |
1053 | int core = -1; | |
799a2abe | 1054 | |
f6327dcb KB |
1055 | /* Thread handle, perhaps a pthread_t or thread_t value, stored as a |
1056 | sequence of bytes. */ | |
7aabaf9d | 1057 | gdb::byte_vector thread_handle; |
f6327dcb | 1058 | |
799a2abe | 1059 | /* Whether the target stopped for a breakpoint/watchpoint. */ |
7aabaf9d | 1060 | enum target_stop_reason stop_reason = TARGET_STOPPED_BY_NO_REASON; |
799a2abe PA |
1061 | |
1062 | /* This is set to the data address of the access causing the target | |
1063 | to stop for a watchpoint. */ | |
7aabaf9d | 1064 | CORE_ADDR watch_data_address = 0; |
85ad3aaf PA |
1065 | |
1066 | /* Fields used by the vCont action coalescing implemented in | |
1067 | remote_resume / remote_commit_resume. remote_resume stores each | |
1068 | thread's last resume request in these fields, so that a later | |
1069 | remote_commit_resume knows which is the proper action for this | |
1070 | thread to include in the vCont packet. */ | |
1071 | ||
1072 | /* True if the last target_resume call for this thread was a step | |
1073 | request, false if a continue request. */ | |
7aabaf9d | 1074 | int last_resume_step = 0; |
85ad3aaf PA |
1075 | |
1076 | /* The signal specified in the last target_resume call for this | |
1077 | thread. */ | |
7aabaf9d | 1078 | gdb_signal last_resume_sig = GDB_SIGNAL_0; |
85ad3aaf PA |
1079 | |
1080 | /* Whether this thread was already vCont-resumed on the remote | |
1081 | side. */ | |
7aabaf9d | 1082 | int vcont_resumed = 0; |
dc146f7c VP |
1083 | }; |
1084 | ||
de44f5a7 | 1085 | remote_state::remote_state () |
8d64371b | 1086 | : buf (400) |
de44f5a7 | 1087 | { |
de44f5a7 PA |
1088 | } |
1089 | ||
1090 | remote_state::~remote_state () | |
1091 | { | |
1092 | xfree (this->last_pass_packet); | |
1093 | xfree (this->last_program_signals_packet); | |
de44f5a7 PA |
1094 | xfree (this->finished_object); |
1095 | xfree (this->finished_annex); | |
cf792862 TT |
1096 | } |
1097 | ||
35b1e5cc SS |
1098 | /* Utility: generate error from an incoming stub packet. */ |
1099 | static void | |
1100 | trace_error (char *buf) | |
1101 | { | |
1102 | if (*buf++ != 'E') | |
1103 | return; /* not an error msg */ | |
1104 | switch (*buf) | |
1105 | { | |
1106 | case '1': /* malformed packet error */ | |
1107 | if (*++buf == '0') /* general case: */ | |
1108 | error (_("remote.c: error in outgoing packet.")); | |
1109 | else | |
1110 | error (_("remote.c: error in outgoing packet at field #%ld."), | |
1111 | strtol (buf, NULL, 16)); | |
35b1e5cc SS |
1112 | default: |
1113 | error (_("Target returns error code '%s'."), buf); | |
1114 | } | |
1115 | } | |
1116 | ||
1117 | /* Utility: wait for reply from stub, while accepting "O" packets. */ | |
b6bb3468 | 1118 | |
6b8edb51 PA |
1119 | char * |
1120 | remote_target::remote_get_noisy_reply () | |
35b1e5cc | 1121 | { |
b6bb3468 PA |
1122 | struct remote_state *rs = get_remote_state (); |
1123 | ||
35b1e5cc SS |
1124 | do /* Loop on reply from remote stub. */ |
1125 | { | |
1126 | char *buf; | |
a744cf53 | 1127 | |
0df8b418 | 1128 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b TT |
1129 | getpkt (&rs->buf, 0); |
1130 | buf = rs->buf.data (); | |
ad91cd99 | 1131 | if (buf[0] == 'E') |
35b1e5cc | 1132 | trace_error (buf); |
61012eef | 1133 | else if (startswith (buf, "qRelocInsn:")) |
dde08ee1 PA |
1134 | { |
1135 | ULONGEST ul; | |
1136 | CORE_ADDR from, to, org_to; | |
256642e8 | 1137 | const char *p, *pp; |
dde08ee1 | 1138 | int adjusted_size = 0; |
7556d4a4 | 1139 | int relocated = 0; |
dde08ee1 PA |
1140 | |
1141 | p = buf + strlen ("qRelocInsn:"); | |
1142 | pp = unpack_varlen_hex (p, &ul); | |
1143 | if (*pp != ';') | |
cb91c06a | 1144 | error (_("invalid qRelocInsn packet: %s"), buf); |
dde08ee1 PA |
1145 | from = ul; |
1146 | ||
1147 | p = pp + 1; | |
a9cbf802 | 1148 | unpack_varlen_hex (p, &ul); |
dde08ee1 PA |
1149 | to = ul; |
1150 | ||
1151 | org_to = to; | |
1152 | ||
a70b8144 | 1153 | try |
dde08ee1 | 1154 | { |
f5656ead | 1155 | gdbarch_relocate_instruction (target_gdbarch (), &to, from); |
7556d4a4 | 1156 | relocated = 1; |
dde08ee1 | 1157 | } |
230d2906 | 1158 | catch (const gdb_exception &ex) |
7556d4a4 PA |
1159 | { |
1160 | if (ex.error == MEMORY_ERROR) | |
1161 | { | |
1162 | /* Propagate memory errors silently back to the | |
1163 | target. The stub may have limited the range of | |
1164 | addresses we can write to, for example. */ | |
1165 | } | |
1166 | else | |
1167 | { | |
1168 | /* Something unexpectedly bad happened. Be verbose | |
1169 | so we can tell what, and propagate the error back | |
1170 | to the stub, so it doesn't get stuck waiting for | |
1171 | a response. */ | |
1172 | exception_fprintf (gdb_stderr, ex, | |
1173 | _("warning: relocating instruction: ")); | |
1174 | } | |
1175 | putpkt ("E01"); | |
1176 | } | |
1177 | ||
1178 | if (relocated) | |
dde08ee1 PA |
1179 | { |
1180 | adjusted_size = to - org_to; | |
1181 | ||
8d64371b | 1182 | xsnprintf (buf, rs->buf.size (), "qRelocInsn:%x", adjusted_size); |
dde08ee1 PA |
1183 | putpkt (buf); |
1184 | } | |
dde08ee1 | 1185 | } |
ad91cd99 | 1186 | else if (buf[0] == 'O' && buf[1] != 'K') |
35b1e5cc SS |
1187 | remote_console_output (buf + 1); /* 'O' message from stub */ |
1188 | else | |
0df8b418 | 1189 | return buf; /* Here's the actual reply. */ |
35b1e5cc SS |
1190 | } |
1191 | while (1); | |
1192 | } | |
3c3bea1c | 1193 | |
9d6eea31 PA |
1194 | struct remote_arch_state * |
1195 | remote_state::get_remote_arch_state (struct gdbarch *gdbarch) | |
d01949b6 | 1196 | { |
43c3a0e4 PA |
1197 | remote_arch_state *rsa; |
1198 | ||
1199 | auto it = this->m_arch_states.find (gdbarch); | |
1200 | if (it == this->m_arch_states.end ()) | |
9d6eea31 | 1201 | { |
43c3a0e4 PA |
1202 | auto p = this->m_arch_states.emplace (std::piecewise_construct, |
1203 | std::forward_as_tuple (gdbarch), | |
1204 | std::forward_as_tuple (gdbarch)); | |
1205 | rsa = &p.first->second; | |
9d6eea31 PA |
1206 | |
1207 | /* Make sure that the packet buffer is plenty big enough for | |
1208 | this architecture. */ | |
8d64371b TT |
1209 | if (this->buf.size () < rsa->remote_packet_size) |
1210 | this->buf.resize (2 * rsa->remote_packet_size); | |
9d6eea31 | 1211 | } |
43c3a0e4 PA |
1212 | else |
1213 | rsa = &it->second; | |
1214 | ||
1215 | return rsa; | |
d01949b6 AC |
1216 | } |
1217 | ||
0b83947e DJ |
1218 | /* Fetch the global remote target state. */ |
1219 | ||
6b8edb51 PA |
1220 | remote_state * |
1221 | remote_target::get_remote_state () | |
0b83947e DJ |
1222 | { |
1223 | /* Make sure that the remote architecture state has been | |
1224 | initialized, because doing so might reallocate rs->buf. Any | |
1225 | function which calls getpkt also needs to be mindful of changes | |
1226 | to rs->buf, but this call limits the number of places which run | |
1227 | into trouble. */ | |
3c69da40 | 1228 | m_remote_state.get_remote_arch_state (target_gdbarch ()); |
0b83947e | 1229 | |
3c69da40 | 1230 | return &m_remote_state; |
0b83947e DJ |
1231 | } |
1232 | ||
94585166 DB |
1233 | /* Fetch the remote exec-file from the current program space. */ |
1234 | ||
1235 | static const char * | |
1236 | get_remote_exec_file (void) | |
1237 | { | |
1238 | char *remote_exec_file; | |
1239 | ||
7b4a314f | 1240 | remote_exec_file = remote_pspace_data.get (current_program_space); |
94585166 DB |
1241 | if (remote_exec_file == NULL) |
1242 | return ""; | |
1243 | ||
1244 | return remote_exec_file; | |
1245 | } | |
1246 | ||
1247 | /* Set the remote exec file for PSPACE. */ | |
1248 | ||
1249 | static void | |
1250 | set_pspace_remote_exec_file (struct program_space *pspace, | |
7b4a314f | 1251 | const char *remote_exec_file) |
94585166 | 1252 | { |
7b4a314f | 1253 | char *old_file = remote_pspace_data.get (pspace); |
94585166 DB |
1254 | |
1255 | xfree (old_file); | |
7b4a314f | 1256 | remote_pspace_data.set (pspace, xstrdup (remote_exec_file)); |
94585166 DB |
1257 | } |
1258 | ||
1259 | /* The "set/show remote exec-file" set command hook. */ | |
1260 | ||
1261 | static void | |
eb4c3f4a | 1262 | set_remote_exec_file (const char *ignored, int from_tty, |
94585166 DB |
1263 | struct cmd_list_element *c) |
1264 | { | |
1265 | gdb_assert (remote_exec_file_var != NULL); | |
1266 | set_pspace_remote_exec_file (current_program_space, remote_exec_file_var); | |
1267 | } | |
1268 | ||
1269 | /* The "set/show remote exec-file" show command hook. */ | |
1270 | ||
1271 | static void | |
1272 | show_remote_exec_file (struct ui_file *file, int from_tty, | |
1273 | struct cmd_list_element *cmd, const char *value) | |
1274 | { | |
1275 | fprintf_filtered (file, "%s\n", remote_exec_file_var); | |
1276 | } | |
1277 | ||
74ca34ce DJ |
1278 | static int |
1279 | compare_pnums (const void *lhs_, const void *rhs_) | |
1280 | { | |
19ba03f4 SM |
1281 | const struct packet_reg * const *lhs |
1282 | = (const struct packet_reg * const *) lhs_; | |
1283 | const struct packet_reg * const *rhs | |
1284 | = (const struct packet_reg * const *) rhs_; | |
74ca34ce DJ |
1285 | |
1286 | if ((*lhs)->pnum < (*rhs)->pnum) | |
1287 | return -1; | |
1288 | else if ((*lhs)->pnum == (*rhs)->pnum) | |
1289 | return 0; | |
1290 | else | |
1291 | return 1; | |
1292 | } | |
1293 | ||
c21236dc PA |
1294 | static int |
1295 | map_regcache_remote_table (struct gdbarch *gdbarch, struct packet_reg *regs) | |
d01949b6 | 1296 | { |
74ca34ce | 1297 | int regnum, num_remote_regs, offset; |
74ca34ce | 1298 | struct packet_reg **remote_regs; |
ea9c271d | 1299 | |
4a22f64d | 1300 | for (regnum = 0; regnum < gdbarch_num_regs (gdbarch); regnum++) |
ad10f812 | 1301 | { |
c21236dc | 1302 | struct packet_reg *r = ®s[regnum]; |
baef701f | 1303 | |
4a22f64d | 1304 | if (register_size (gdbarch, regnum) == 0) |
baef701f DJ |
1305 | /* Do not try to fetch zero-sized (placeholder) registers. */ |
1306 | r->pnum = -1; | |
1307 | else | |
1308 | r->pnum = gdbarch_remote_register_number (gdbarch, regnum); | |
1309 | ||
b323314b | 1310 | r->regnum = regnum; |
74ca34ce DJ |
1311 | } |
1312 | ||
1313 | /* Define the g/G packet format as the contents of each register | |
1314 | with a remote protocol number, in order of ascending protocol | |
1315 | number. */ | |
1316 | ||
224c3ddb | 1317 | remote_regs = XALLOCAVEC (struct packet_reg *, gdbarch_num_regs (gdbarch)); |
f57d151a | 1318 | for (num_remote_regs = 0, regnum = 0; |
4a22f64d | 1319 | regnum < gdbarch_num_regs (gdbarch); |
f57d151a | 1320 | regnum++) |
c21236dc PA |
1321 | if (regs[regnum].pnum != -1) |
1322 | remote_regs[num_remote_regs++] = ®s[regnum]; | |
7d58c67d | 1323 | |
74ca34ce DJ |
1324 | qsort (remote_regs, num_remote_regs, sizeof (struct packet_reg *), |
1325 | compare_pnums); | |
1326 | ||
1327 | for (regnum = 0, offset = 0; regnum < num_remote_regs; regnum++) | |
1328 | { | |
1329 | remote_regs[regnum]->in_g_packet = 1; | |
1330 | remote_regs[regnum]->offset = offset; | |
4a22f64d | 1331 | offset += register_size (gdbarch, remote_regs[regnum]->regnum); |
ad10f812 AC |
1332 | } |
1333 | ||
c21236dc PA |
1334 | return offset; |
1335 | } | |
1336 | ||
1337 | /* Given the architecture described by GDBARCH, return the remote | |
1338 | protocol register's number and the register's offset in the g/G | |
1339 | packets of GDB register REGNUM, in PNUM and POFFSET respectively. | |
1340 | If the target does not have a mapping for REGNUM, return false, | |
1341 | otherwise, return true. */ | |
1342 | ||
1343 | int | |
1344 | remote_register_number_and_offset (struct gdbarch *gdbarch, int regnum, | |
1345 | int *pnum, int *poffset) | |
1346 | { | |
c21236dc PA |
1347 | gdb_assert (regnum < gdbarch_num_regs (gdbarch)); |
1348 | ||
b80406ac | 1349 | std::vector<packet_reg> regs (gdbarch_num_regs (gdbarch)); |
c21236dc | 1350 | |
b80406ac | 1351 | map_regcache_remote_table (gdbarch, regs.data ()); |
c21236dc PA |
1352 | |
1353 | *pnum = regs[regnum].pnum; | |
1354 | *poffset = regs[regnum].offset; | |
1355 | ||
c21236dc PA |
1356 | return *pnum != -1; |
1357 | } | |
1358 | ||
9d6eea31 | 1359 | remote_arch_state::remote_arch_state (struct gdbarch *gdbarch) |
c21236dc | 1360 | { |
c21236dc PA |
1361 | /* Use the architecture to build a regnum<->pnum table, which will be |
1362 | 1:1 unless a feature set specifies otherwise. */ | |
9d6eea31 | 1363 | this->regs.reset (new packet_reg [gdbarch_num_regs (gdbarch)] ()); |
c21236dc | 1364 | |
74ca34ce DJ |
1365 | /* Record the maximum possible size of the g packet - it may turn out |
1366 | to be smaller. */ | |
9d6eea31 PA |
1367 | this->sizeof_g_packet |
1368 | = map_regcache_remote_table (gdbarch, this->regs.get ()); | |
74ca34ce | 1369 | |
0df8b418 | 1370 | /* Default maximum number of characters in a packet body. Many |
d01949b6 AC |
1371 | remote stubs have a hardwired buffer size of 400 bytes |
1372 | (c.f. BUFMAX in m68k-stub.c and i386-stub.c). BUFMAX-1 is used | |
1373 | as the maximum packet-size to ensure that the packet and an extra | |
1374 | NUL character can always fit in the buffer. This stops GDB | |
1375 | trashing stubs that try to squeeze an extra NUL into what is | |
ea9c271d | 1376 | already a full buffer (As of 1999-12-04 that was most stubs). */ |
9d6eea31 | 1377 | this->remote_packet_size = 400 - 1; |
d01949b6 | 1378 | |
ea9c271d | 1379 | /* This one is filled in when a ``g'' packet is received. */ |
9d6eea31 | 1380 | this->actual_register_packet_size = 0; |
ea9c271d DJ |
1381 | |
1382 | /* Should rsa->sizeof_g_packet needs more space than the | |
0df8b418 MS |
1383 | default, adjust the size accordingly. Remember that each byte is |
1384 | encoded as two characters. 32 is the overhead for the packet | |
1385 | header / footer. NOTE: cagney/1999-10-26: I suspect that 8 | |
d01949b6 | 1386 | (``$NN:G...#NN'') is a better guess, the below has been padded a |
23860348 | 1387 | little. */ |
9d6eea31 PA |
1388 | if (this->sizeof_g_packet > ((this->remote_packet_size - 32) / 2)) |
1389 | this->remote_packet_size = (this->sizeof_g_packet * 2 + 32); | |
ea9c271d DJ |
1390 | } |
1391 | ||
6b8edb51 PA |
1392 | /* Get a pointer to the current remote target. If not connected to a |
1393 | remote target, return NULL. */ | |
1394 | ||
1395 | static remote_target * | |
1396 | get_current_remote_target () | |
1397 | { | |
1398 | target_ops *proc_target = find_target_at (process_stratum); | |
1399 | return dynamic_cast<remote_target *> (proc_target); | |
1400 | } | |
1401 | ||
ea9c271d DJ |
1402 | /* Return the current allowed size of a remote packet. This is |
1403 | inferred from the current architecture, and should be used to | |
1404 | limit the length of outgoing packets. */ | |
6b8edb51 PA |
1405 | long |
1406 | remote_target::get_remote_packet_size () | |
ea9c271d | 1407 | { |
be2a5f71 | 1408 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1409 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1410 | |
be2a5f71 DJ |
1411 | if (rs->explicit_packet_size) |
1412 | return rs->explicit_packet_size; | |
1413 | ||
ea9c271d | 1414 | return rsa->remote_packet_size; |
d01949b6 AC |
1415 | } |
1416 | ||
ad10f812 | 1417 | static struct packet_reg * |
5cd63fda PA |
1418 | packet_reg_from_regnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1419 | long regnum) | |
ad10f812 | 1420 | { |
5cd63fda | 1421 | if (regnum < 0 && regnum >= gdbarch_num_regs (gdbarch)) |
b323314b AC |
1422 | return NULL; |
1423 | else | |
ad10f812 | 1424 | { |
ea9c271d | 1425 | struct packet_reg *r = &rsa->regs[regnum]; |
a744cf53 | 1426 | |
b323314b AC |
1427 | gdb_assert (r->regnum == regnum); |
1428 | return r; | |
ad10f812 | 1429 | } |
ad10f812 AC |
1430 | } |
1431 | ||
1432 | static struct packet_reg * | |
5cd63fda PA |
1433 | packet_reg_from_pnum (struct gdbarch *gdbarch, struct remote_arch_state *rsa, |
1434 | LONGEST pnum) | |
ad10f812 | 1435 | { |
b323314b | 1436 | int i; |
a744cf53 | 1437 | |
5cd63fda | 1438 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
ad10f812 | 1439 | { |
ea9c271d | 1440 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 1441 | |
b323314b AC |
1442 | if (r->pnum == pnum) |
1443 | return r; | |
ad10f812 AC |
1444 | } |
1445 | return NULL; | |
d01949b6 AC |
1446 | } |
1447 | ||
9a7071a8 JB |
1448 | /* Allow the user to specify what sequence to send to the remote |
1449 | when he requests a program interruption: Although ^C is usually | |
1450 | what remote systems expect (this is the default, here), it is | |
1451 | sometimes preferable to send a break. On other systems such | |
1452 | as the Linux kernel, a break followed by g, which is Magic SysRq g | |
1453 | is required in order to interrupt the execution. */ | |
1454 | const char interrupt_sequence_control_c[] = "Ctrl-C"; | |
1455 | const char interrupt_sequence_break[] = "BREAK"; | |
1456 | const char interrupt_sequence_break_g[] = "BREAK-g"; | |
40478521 | 1457 | static const char *const interrupt_sequence_modes[] = |
9a7071a8 JB |
1458 | { |
1459 | interrupt_sequence_control_c, | |
1460 | interrupt_sequence_break, | |
1461 | interrupt_sequence_break_g, | |
1462 | NULL | |
1463 | }; | |
1464 | static const char *interrupt_sequence_mode = interrupt_sequence_control_c; | |
1465 | ||
1466 | static void | |
1467 | show_interrupt_sequence (struct ui_file *file, int from_tty, | |
1468 | struct cmd_list_element *c, | |
1469 | const char *value) | |
1470 | { | |
1471 | if (interrupt_sequence_mode == interrupt_sequence_control_c) | |
1472 | fprintf_filtered (file, | |
1473 | _("Send the ASCII ETX character (Ctrl-c) " | |
1474 | "to the remote target to interrupt the " | |
1475 | "execution of the program.\n")); | |
1476 | else if (interrupt_sequence_mode == interrupt_sequence_break) | |
1477 | fprintf_filtered (file, | |
1478 | _("send a break signal to the remote target " | |
1479 | "to interrupt the execution of the program.\n")); | |
1480 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) | |
1481 | fprintf_filtered (file, | |
1482 | _("Send a break signal and 'g' a.k.a. Magic SysRq g to " | |
1483 | "the remote target to interrupt the execution " | |
1484 | "of Linux kernel.\n")); | |
1485 | else | |
1486 | internal_error (__FILE__, __LINE__, | |
1487 | _("Invalid value for interrupt_sequence_mode: %s."), | |
1488 | interrupt_sequence_mode); | |
1489 | } | |
6426a772 | 1490 | |
9a7071a8 JB |
1491 | /* This boolean variable specifies whether interrupt_sequence is sent |
1492 | to the remote target when gdb connects to it. | |
1493 | This is mostly needed when you debug the Linux kernel: The Linux kernel | |
1494 | expects BREAK g which is Magic SysRq g for connecting gdb. */ | |
491144b5 | 1495 | static bool interrupt_on_connect = false; |
c906108c | 1496 | |
9a7071a8 JB |
1497 | /* This variable is used to implement the "set/show remotebreak" commands. |
1498 | Since these commands are now deprecated in favor of "set/show remote | |
1499 | interrupt-sequence", it no longer has any effect on the code. */ | |
491144b5 | 1500 | static bool remote_break; |
c906108c | 1501 | |
9a7071a8 | 1502 | static void |
eb4c3f4a | 1503 | set_remotebreak (const char *args, int from_tty, struct cmd_list_element *c) |
9a7071a8 JB |
1504 | { |
1505 | if (remote_break) | |
1506 | interrupt_sequence_mode = interrupt_sequence_break; | |
1507 | else | |
1508 | interrupt_sequence_mode = interrupt_sequence_control_c; | |
1509 | } | |
1510 | ||
1511 | static void | |
1512 | show_remotebreak (struct ui_file *file, int from_tty, | |
1513 | struct cmd_list_element *c, | |
1514 | const char *value) | |
1515 | { | |
1516 | } | |
1517 | ||
c906108c SS |
1518 | /* This variable sets the number of bits in an address that are to be |
1519 | sent in a memory ("M" or "m") packet. Normally, after stripping | |
0df8b418 | 1520 | leading zeros, the entire address would be sent. This variable |
c906108c SS |
1521 | restricts the address to REMOTE_ADDRESS_SIZE bits. HISTORY: The |
1522 | initial implementation of remote.c restricted the address sent in | |
1523 | memory packets to ``host::sizeof long'' bytes - (typically 32 | |
1524 | bits). Consequently, for 64 bit targets, the upper 32 bits of an | |
1525 | address was never sent. Since fixing this bug may cause a break in | |
1526 | some remote targets this variable is principly provided to | |
23860348 | 1527 | facilitate backward compatibility. */ |
c906108c | 1528 | |
883b9c6c | 1529 | static unsigned int remote_address_size; |
c906108c | 1530 | |
11cf8741 | 1531 | \f |
11cf8741 | 1532 | /* User configurable variables for the number of characters in a |
ea9c271d DJ |
1533 | memory read/write packet. MIN (rsa->remote_packet_size, |
1534 | rsa->sizeof_g_packet) is the default. Some targets need smaller | |
24b06219 | 1535 | values (fifo overruns, et.al.) and some users need larger values |
ad10f812 AC |
1536 | (speed up transfers). The variables ``preferred_*'' (the user |
1537 | request), ``current_*'' (what was actually set) and ``forced_*'' | |
23860348 | 1538 | (Positive - a soft limit, negative - a hard limit). */ |
11cf8741 JM |
1539 | |
1540 | struct memory_packet_config | |
1541 | { | |
a121b7c1 | 1542 | const char *name; |
11cf8741 JM |
1543 | long size; |
1544 | int fixed_p; | |
1545 | }; | |
1546 | ||
cc0be08f PA |
1547 | /* The default max memory-write-packet-size, when the setting is |
1548 | "fixed". The 16k is historical. (It came from older GDB's using | |
1549 | alloca for buffers and the knowledge (folklore?) that some hosts | |
1550 | don't cope very well with large alloca calls.) */ | |
1551 | #define DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED 16384 | |
a5c0808e PA |
1552 | |
1553 | /* The minimum remote packet size for memory transfers. Ensures we | |
1554 | can write at least one byte. */ | |
1555 | #define MIN_MEMORY_PACKET_SIZE 20 | |
1556 | ||
cc0be08f PA |
1557 | /* Get the memory packet size, assuming it is fixed. */ |
1558 | ||
1559 | static long | |
1560 | get_fixed_memory_packet_size (struct memory_packet_config *config) | |
1561 | { | |
1562 | gdb_assert (config->fixed_p); | |
1563 | ||
1564 | if (config->size <= 0) | |
1565 | return DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED; | |
1566 | else | |
1567 | return config->size; | |
1568 | } | |
1569 | ||
11cf8741 JM |
1570 | /* Compute the current size of a read/write packet. Since this makes |
1571 | use of ``actual_register_packet_size'' the computation is dynamic. */ | |
1572 | ||
6b8edb51 PA |
1573 | long |
1574 | remote_target::get_memory_packet_size (struct memory_packet_config *config) | |
11cf8741 | 1575 | { |
d01949b6 | 1576 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 1577 | remote_arch_state *rsa = rs->get_remote_arch_state (target_gdbarch ()); |
ea9c271d | 1578 | |
11cf8741 JM |
1579 | long what_they_get; |
1580 | if (config->fixed_p) | |
cc0be08f | 1581 | what_they_get = get_fixed_memory_packet_size (config); |
11cf8741 JM |
1582 | else |
1583 | { | |
ea9c271d | 1584 | what_they_get = get_remote_packet_size (); |
23860348 | 1585 | /* Limit the packet to the size specified by the user. */ |
11cf8741 JM |
1586 | if (config->size > 0 |
1587 | && what_they_get > config->size) | |
1588 | what_they_get = config->size; | |
be2a5f71 DJ |
1589 | |
1590 | /* Limit it to the size of the targets ``g'' response unless we have | |
1591 | permission from the stub to use a larger packet size. */ | |
1592 | if (rs->explicit_packet_size == 0 | |
1593 | && rsa->actual_register_packet_size > 0 | |
1594 | && what_they_get > rsa->actual_register_packet_size) | |
1595 | what_they_get = rsa->actual_register_packet_size; | |
11cf8741 | 1596 | } |
a5c0808e PA |
1597 | if (what_they_get < MIN_MEMORY_PACKET_SIZE) |
1598 | what_they_get = MIN_MEMORY_PACKET_SIZE; | |
6d820c5c DJ |
1599 | |
1600 | /* Make sure there is room in the global buffer for this packet | |
1601 | (including its trailing NUL byte). */ | |
8d64371b TT |
1602 | if (rs->buf.size () < what_they_get + 1) |
1603 | rs->buf.resize (2 * what_they_get); | |
6d820c5c | 1604 | |
11cf8741 JM |
1605 | return what_they_get; |
1606 | } | |
1607 | ||
0df8b418 | 1608 | /* Update the size of a read/write packet. If they user wants |
23860348 | 1609 | something really big then do a sanity check. */ |
11cf8741 JM |
1610 | |
1611 | static void | |
ac88e2de | 1612 | set_memory_packet_size (const char *args, struct memory_packet_config *config) |
11cf8741 JM |
1613 | { |
1614 | int fixed_p = config->fixed_p; | |
1615 | long size = config->size; | |
a744cf53 | 1616 | |
11cf8741 | 1617 | if (args == NULL) |
8a3fe4f8 | 1618 | error (_("Argument required (integer, `fixed' or `limited').")); |
11cf8741 JM |
1619 | else if (strcmp (args, "hard") == 0 |
1620 | || strcmp (args, "fixed") == 0) | |
1621 | fixed_p = 1; | |
1622 | else if (strcmp (args, "soft") == 0 | |
1623 | || strcmp (args, "limit") == 0) | |
1624 | fixed_p = 0; | |
1625 | else | |
1626 | { | |
1627 | char *end; | |
a744cf53 | 1628 | |
11cf8741 JM |
1629 | size = strtoul (args, &end, 0); |
1630 | if (args == end) | |
8a3fe4f8 | 1631 | error (_("Invalid %s (bad syntax)."), config->name); |
a5c0808e PA |
1632 | |
1633 | /* Instead of explicitly capping the size of a packet to or | |
1634 | disallowing it, the user is allowed to set the size to | |
1635 | something arbitrarily large. */ | |
11cf8741 | 1636 | } |
a5c0808e | 1637 | |
23860348 | 1638 | /* Extra checks? */ |
11cf8741 JM |
1639 | if (fixed_p && !config->fixed_p) |
1640 | { | |
cc0be08f PA |
1641 | /* So that the query shows the correct value. */ |
1642 | long query_size = (size <= 0 | |
1643 | ? DEFAULT_MAX_MEMORY_PACKET_SIZE_FIXED | |
1644 | : size); | |
1645 | ||
e2e0b3e5 AC |
1646 | if (! query (_("The target may not be able to correctly handle a %s\n" |
1647 | "of %ld bytes. Change the packet size? "), | |
cc0be08f | 1648 | config->name, query_size)) |
8a3fe4f8 | 1649 | error (_("Packet size not changed.")); |
11cf8741 | 1650 | } |
23860348 | 1651 | /* Update the config. */ |
11cf8741 JM |
1652 | config->fixed_p = fixed_p; |
1653 | config->size = size; | |
1654 | } | |
1655 | ||
1656 | static void | |
1657 | show_memory_packet_size (struct memory_packet_config *config) | |
1658 | { | |
cc0be08f PA |
1659 | if (config->size == 0) |
1660 | printf_filtered (_("The %s is 0 (default). "), config->name); | |
1661 | else | |
1662 | printf_filtered (_("The %s is %ld. "), config->name, config->size); | |
11cf8741 | 1663 | if (config->fixed_p) |
a3f17187 | 1664 | printf_filtered (_("Packets are fixed at %ld bytes.\n"), |
cc0be08f | 1665 | get_fixed_memory_packet_size (config)); |
11cf8741 | 1666 | else |
cc0be08f | 1667 | { |
6b8edb51 | 1668 | remote_target *remote = get_current_remote_target (); |
cc0be08f | 1669 | |
6b8edb51 | 1670 | if (remote != NULL) |
cc0be08f | 1671 | printf_filtered (_("Packets are limited to %ld bytes.\n"), |
6b8edb51 | 1672 | remote->get_memory_packet_size (config)); |
cc0be08f PA |
1673 | else |
1674 | puts_filtered ("The actual limit will be further reduced " | |
1675 | "dependent on the target.\n"); | |
1676 | } | |
11cf8741 JM |
1677 | } |
1678 | ||
1679 | static struct memory_packet_config memory_write_packet_config = | |
1680 | { | |
1681 | "memory-write-packet-size", | |
1682 | }; | |
1683 | ||
1684 | static void | |
ac88e2de | 1685 | set_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1686 | { |
1687 | set_memory_packet_size (args, &memory_write_packet_config); | |
1688 | } | |
1689 | ||
1690 | static void | |
ac88e2de | 1691 | show_memory_write_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1692 | { |
1693 | show_memory_packet_size (&memory_write_packet_config); | |
1694 | } | |
1695 | ||
055303e2 AB |
1696 | /* Show the number of hardware watchpoints that can be used. */ |
1697 | ||
1698 | static void | |
1699 | show_hardware_watchpoint_limit (struct ui_file *file, int from_tty, | |
1700 | struct cmd_list_element *c, | |
1701 | const char *value) | |
1702 | { | |
1703 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1704 | "watchpoints is %s.\n"), value); | |
1705 | } | |
1706 | ||
1707 | /* Show the length limit (in bytes) for hardware watchpoints. */ | |
1708 | ||
1709 | static void | |
1710 | show_hardware_watchpoint_length_limit (struct ui_file *file, int from_tty, | |
1711 | struct cmd_list_element *c, | |
1712 | const char *value) | |
1713 | { | |
1714 | fprintf_filtered (file, _("The maximum length (in bytes) of a target " | |
1715 | "hardware watchpoint is %s.\n"), value); | |
1716 | } | |
1717 | ||
1718 | /* Show the number of hardware breakpoints that can be used. */ | |
1719 | ||
1720 | static void | |
1721 | show_hardware_breakpoint_limit (struct ui_file *file, int from_tty, | |
1722 | struct cmd_list_element *c, | |
1723 | const char *value) | |
1724 | { | |
1725 | fprintf_filtered (file, _("The maximum number of target hardware " | |
1726 | "breakpoints is %s.\n"), value); | |
1727 | } | |
1728 | ||
6b8edb51 PA |
1729 | long |
1730 | remote_target::get_memory_write_packet_size () | |
11cf8741 JM |
1731 | { |
1732 | return get_memory_packet_size (&memory_write_packet_config); | |
1733 | } | |
1734 | ||
1735 | static struct memory_packet_config memory_read_packet_config = | |
1736 | { | |
1737 | "memory-read-packet-size", | |
1738 | }; | |
1739 | ||
1740 | static void | |
ac88e2de | 1741 | set_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1742 | { |
1743 | set_memory_packet_size (args, &memory_read_packet_config); | |
1744 | } | |
1745 | ||
1746 | static void | |
ac88e2de | 1747 | show_memory_read_packet_size (const char *args, int from_tty) |
11cf8741 JM |
1748 | { |
1749 | show_memory_packet_size (&memory_read_packet_config); | |
1750 | } | |
1751 | ||
6b8edb51 PA |
1752 | long |
1753 | remote_target::get_memory_read_packet_size () | |
11cf8741 JM |
1754 | { |
1755 | long size = get_memory_packet_size (&memory_read_packet_config); | |
a744cf53 | 1756 | |
11cf8741 JM |
1757 | /* FIXME: cagney/1999-11-07: Functions like getpkt() need to get an |
1758 | extra buffer size argument before the memory read size can be | |
ea9c271d DJ |
1759 | increased beyond this. */ |
1760 | if (size > get_remote_packet_size ()) | |
1761 | size = get_remote_packet_size (); | |
11cf8741 JM |
1762 | return size; |
1763 | } | |
1764 | ||
11cf8741 | 1765 | \f |
5a2468f5 | 1766 | |
5a2468f5 JM |
1767 | struct packet_config |
1768 | { | |
bb572ddd DJ |
1769 | const char *name; |
1770 | const char *title; | |
4082afcc PA |
1771 | |
1772 | /* If auto, GDB auto-detects support for this packet or feature, | |
1773 | either through qSupported, or by trying the packet and looking | |
1774 | at the response. If true, GDB assumes the target supports this | |
ca4f7f8b PA |
1775 | packet. If false, the packet is disabled. Configs that don't |
1776 | have an associated command always have this set to auto. */ | |
7f19b9a2 | 1777 | enum auto_boolean detect; |
4082afcc PA |
1778 | |
1779 | /* Does the target support this packet? */ | |
5a2468f5 JM |
1780 | enum packet_support support; |
1781 | }; | |
1782 | ||
4082afcc PA |
1783 | static enum packet_support packet_config_support (struct packet_config *config); |
1784 | static enum packet_support packet_support (int packet); | |
5a2468f5 JM |
1785 | |
1786 | static void | |
fba45db2 | 1787 | show_packet_config_cmd (struct packet_config *config) |
5a2468f5 | 1788 | { |
a121b7c1 | 1789 | const char *support = "internal-error"; |
a744cf53 | 1790 | |
4082afcc | 1791 | switch (packet_config_support (config)) |
5a2468f5 JM |
1792 | { |
1793 | case PACKET_ENABLE: | |
1794 | support = "enabled"; | |
1795 | break; | |
1796 | case PACKET_DISABLE: | |
1797 | support = "disabled"; | |
1798 | break; | |
1799 | case PACKET_SUPPORT_UNKNOWN: | |
1800 | support = "unknown"; | |
1801 | break; | |
1802 | } | |
1803 | switch (config->detect) | |
1804 | { | |
7f19b9a2 | 1805 | case AUTO_BOOLEAN_AUTO: |
3e43a32a MS |
1806 | printf_filtered (_("Support for the `%s' packet " |
1807 | "is auto-detected, currently %s.\n"), | |
37a105a1 | 1808 | config->name, support); |
5a2468f5 | 1809 | break; |
7f19b9a2 AC |
1810 | case AUTO_BOOLEAN_TRUE: |
1811 | case AUTO_BOOLEAN_FALSE: | |
37a105a1 DJ |
1812 | printf_filtered (_("Support for the `%s' packet is currently %s.\n"), |
1813 | config->name, support); | |
8e248173 | 1814 | break; |
5a2468f5 JM |
1815 | } |
1816 | } | |
1817 | ||
1818 | static void | |
bb572ddd DJ |
1819 | add_packet_config_cmd (struct packet_config *config, const char *name, |
1820 | const char *title, int legacy) | |
d471ea57 | 1821 | { |
5a2468f5 JM |
1822 | char *set_doc; |
1823 | char *show_doc; | |
d471ea57 | 1824 | char *cmd_name; |
3ed07be4 | 1825 | |
5a2468f5 JM |
1826 | config->name = name; |
1827 | config->title = title; | |
590042fc | 1828 | set_doc = xstrprintf ("Set use of remote protocol `%s' (%s) packet.", |
b435e160 | 1829 | name, title); |
3e43a32a | 1830 | show_doc = xstrprintf ("Show current use of remote " |
590042fc | 1831 | "protocol `%s' (%s) packet.", |
b435e160 | 1832 | name, title); |
d471ea57 | 1833 | /* set/show TITLE-packet {auto,on,off} */ |
b435e160 | 1834 | cmd_name = xstrprintf ("%s-packet", title); |
e9e68a56 | 1835 | add_setshow_auto_boolean_cmd (cmd_name, class_obscure, |
3e43a32a MS |
1836 | &config->detect, set_doc, |
1837 | show_doc, NULL, /* help_doc */ | |
4082afcc | 1838 | NULL, |
bb572ddd DJ |
1839 | show_remote_protocol_packet_cmd, |
1840 | &remote_set_cmdlist, &remote_show_cmdlist); | |
1eefb858 TT |
1841 | /* The command code copies the documentation strings. */ |
1842 | xfree (set_doc); | |
1843 | xfree (show_doc); | |
23860348 | 1844 | /* set/show remote NAME-packet {auto,on,off} -- legacy. */ |
d471ea57 AC |
1845 | if (legacy) |
1846 | { | |
1847 | char *legacy_name; | |
a744cf53 | 1848 | |
b435e160 | 1849 | legacy_name = xstrprintf ("%s-packet", name); |
d471ea57 | 1850 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1851 | &remote_set_cmdlist); |
d471ea57 | 1852 | add_alias_cmd (legacy_name, cmd_name, class_obscure, 0, |
bb572ddd | 1853 | &remote_show_cmdlist); |
d471ea57 | 1854 | } |
5a2468f5 JM |
1855 | } |
1856 | ||
d471ea57 | 1857 | static enum packet_result |
a76d924d | 1858 | packet_check_result (const char *buf) |
5a2468f5 | 1859 | { |
d471ea57 | 1860 | if (buf[0] != '\0') |
5a2468f5 | 1861 | { |
d471ea57 | 1862 | /* The stub recognized the packet request. Check that the |
23860348 | 1863 | operation succeeded. */ |
a76d924d DJ |
1864 | if (buf[0] == 'E' |
1865 | && isxdigit (buf[1]) && isxdigit (buf[2]) | |
1866 | && buf[3] == '\0') | |
1867 | /* "Enn" - definitly an error. */ | |
1868 | return PACKET_ERROR; | |
1869 | ||
1870 | /* Always treat "E." as an error. This will be used for | |
1871 | more verbose error messages, such as E.memtypes. */ | |
1872 | if (buf[0] == 'E' && buf[1] == '.') | |
1873 | return PACKET_ERROR; | |
1874 | ||
1875 | /* The packet may or may not be OK. Just assume it is. */ | |
1876 | return PACKET_OK; | |
1877 | } | |
1878 | else | |
1879 | /* The stub does not support the packet. */ | |
1880 | return PACKET_UNKNOWN; | |
1881 | } | |
1882 | ||
8d64371b TT |
1883 | static enum packet_result |
1884 | packet_check_result (const gdb::char_vector &buf) | |
1885 | { | |
1886 | return packet_check_result (buf.data ()); | |
1887 | } | |
1888 | ||
a76d924d DJ |
1889 | static enum packet_result |
1890 | packet_ok (const char *buf, struct packet_config *config) | |
1891 | { | |
1892 | enum packet_result result; | |
1893 | ||
4082afcc PA |
1894 | if (config->detect != AUTO_BOOLEAN_TRUE |
1895 | && config->support == PACKET_DISABLE) | |
1896 | internal_error (__FILE__, __LINE__, | |
1897 | _("packet_ok: attempt to use a disabled packet")); | |
1898 | ||
a76d924d DJ |
1899 | result = packet_check_result (buf); |
1900 | switch (result) | |
1901 | { | |
1902 | case PACKET_OK: | |
1903 | case PACKET_ERROR: | |
1904 | /* The stub recognized the packet request. */ | |
4082afcc | 1905 | if (config->support == PACKET_SUPPORT_UNKNOWN) |
d471ea57 | 1906 | { |
d471ea57 AC |
1907 | if (remote_debug) |
1908 | fprintf_unfiltered (gdb_stdlog, | |
4082afcc PA |
1909 | "Packet %s (%s) is supported\n", |
1910 | config->name, config->title); | |
d471ea57 | 1911 | config->support = PACKET_ENABLE; |
d471ea57 | 1912 | } |
a76d924d DJ |
1913 | break; |
1914 | case PACKET_UNKNOWN: | |
23860348 | 1915 | /* The stub does not support the packet. */ |
4082afcc PA |
1916 | if (config->detect == AUTO_BOOLEAN_AUTO |
1917 | && config->support == PACKET_ENABLE) | |
d471ea57 | 1918 | { |
4082afcc PA |
1919 | /* If the stub previously indicated that the packet was |
1920 | supported then there is a protocol error. */ | |
1921 | error (_("Protocol error: %s (%s) conflicting enabled responses."), | |
1922 | config->name, config->title); | |
1923 | } | |
1924 | else if (config->detect == AUTO_BOOLEAN_TRUE) | |
1925 | { | |
1926 | /* The user set it wrong. */ | |
1927 | error (_("Enabled packet %s (%s) not recognized by stub"), | |
1928 | config->name, config->title); | |
d471ea57 | 1929 | } |
4082afcc PA |
1930 | |
1931 | if (remote_debug) | |
1932 | fprintf_unfiltered (gdb_stdlog, | |
1933 | "Packet %s (%s) is NOT supported\n", | |
1934 | config->name, config->title); | |
1935 | config->support = PACKET_DISABLE; | |
a76d924d | 1936 | break; |
5a2468f5 | 1937 | } |
a76d924d DJ |
1938 | |
1939 | return result; | |
5a2468f5 JM |
1940 | } |
1941 | ||
8d64371b TT |
1942 | static enum packet_result |
1943 | packet_ok (const gdb::char_vector &buf, struct packet_config *config) | |
1944 | { | |
1945 | return packet_ok (buf.data (), config); | |
1946 | } | |
1947 | ||
444abaca DJ |
1948 | enum { |
1949 | PACKET_vCont = 0, | |
1950 | PACKET_X, | |
1951 | PACKET_qSymbol, | |
1952 | PACKET_P, | |
1953 | PACKET_p, | |
1954 | PACKET_Z0, | |
1955 | PACKET_Z1, | |
1956 | PACKET_Z2, | |
1957 | PACKET_Z3, | |
1958 | PACKET_Z4, | |
15a201c8 | 1959 | PACKET_vFile_setfs, |
a6b151f1 DJ |
1960 | PACKET_vFile_open, |
1961 | PACKET_vFile_pread, | |
1962 | PACKET_vFile_pwrite, | |
1963 | PACKET_vFile_close, | |
1964 | PACKET_vFile_unlink, | |
b9e7b9c3 | 1965 | PACKET_vFile_readlink, |
0a93529c | 1966 | PACKET_vFile_fstat, |
0876f84a | 1967 | PACKET_qXfer_auxv, |
23181151 | 1968 | PACKET_qXfer_features, |
c78fa86a | 1969 | PACKET_qXfer_exec_file, |
cfa9d6d9 | 1970 | PACKET_qXfer_libraries, |
2268b414 | 1971 | PACKET_qXfer_libraries_svr4, |
fd79ecee | 1972 | PACKET_qXfer_memory_map, |
07e059b5 | 1973 | PACKET_qXfer_osdata, |
dc146f7c | 1974 | PACKET_qXfer_threads, |
0fb4aa4b | 1975 | PACKET_qXfer_statictrace_read, |
b3b9301e | 1976 | PACKET_qXfer_traceframe_info, |
169081d0 | 1977 | PACKET_qXfer_uib, |
711e434b | 1978 | PACKET_qGetTIBAddr, |
444abaca | 1979 | PACKET_qGetTLSAddr, |
be2a5f71 | 1980 | PACKET_qSupported, |
bd3eecc3 | 1981 | PACKET_qTStatus, |
89be2091 | 1982 | PACKET_QPassSignals, |
82075af2 | 1983 | PACKET_QCatchSyscalls, |
9b224c5e | 1984 | PACKET_QProgramSignals, |
bc3b087d | 1985 | PACKET_QSetWorkingDir, |
aefd8b33 | 1986 | PACKET_QStartupWithShell, |
0a2dde4a SDJ |
1987 | PACKET_QEnvironmentHexEncoded, |
1988 | PACKET_QEnvironmentReset, | |
1989 | PACKET_QEnvironmentUnset, | |
936d2992 | 1990 | PACKET_qCRC, |
08388c79 | 1991 | PACKET_qSearch_memory, |
2d717e4f DJ |
1992 | PACKET_vAttach, |
1993 | PACKET_vRun, | |
a6f3e723 | 1994 | PACKET_QStartNoAckMode, |
82f73884 | 1995 | PACKET_vKill, |
4aa995e1 PA |
1996 | PACKET_qXfer_siginfo_read, |
1997 | PACKET_qXfer_siginfo_write, | |
0b16c5cf | 1998 | PACKET_qAttached, |
4082afcc PA |
1999 | |
2000 | /* Support for conditional tracepoints. */ | |
782b2b07 | 2001 | PACKET_ConditionalTracepoints, |
4082afcc PA |
2002 | |
2003 | /* Support for target-side breakpoint conditions. */ | |
3788aec7 | 2004 | PACKET_ConditionalBreakpoints, |
4082afcc PA |
2005 | |
2006 | /* Support for target-side breakpoint commands. */ | |
d3ce09f5 | 2007 | PACKET_BreakpointCommands, |
4082afcc PA |
2008 | |
2009 | /* Support for fast tracepoints. */ | |
7a697b8d | 2010 | PACKET_FastTracepoints, |
4082afcc PA |
2011 | |
2012 | /* Support for static tracepoints. */ | |
0fb4aa4b | 2013 | PACKET_StaticTracepoints, |
4082afcc PA |
2014 | |
2015 | /* Support for installing tracepoints while a trace experiment is | |
2016 | running. */ | |
1e4d1764 | 2017 | PACKET_InstallInTrace, |
4082afcc | 2018 | |
40ab02ce MS |
2019 | PACKET_bc, |
2020 | PACKET_bs, | |
409873ef | 2021 | PACKET_TracepointSource, |
d914c394 | 2022 | PACKET_QAllow, |
78d85199 | 2023 | PACKET_qXfer_fdpic, |
03583c20 | 2024 | PACKET_QDisableRandomization, |
d1feda86 | 2025 | PACKET_QAgent, |
f6f899bf | 2026 | PACKET_QTBuffer_size, |
9accd112 MM |
2027 | PACKET_Qbtrace_off, |
2028 | PACKET_Qbtrace_bts, | |
b20a6524 | 2029 | PACKET_Qbtrace_pt, |
9accd112 | 2030 | PACKET_qXfer_btrace, |
4082afcc PA |
2031 | |
2032 | /* Support for the QNonStop packet. */ | |
2033 | PACKET_QNonStop, | |
2034 | ||
65706a29 PA |
2035 | /* Support for the QThreadEvents packet. */ |
2036 | PACKET_QThreadEvents, | |
2037 | ||
4082afcc PA |
2038 | /* Support for multi-process extensions. */ |
2039 | PACKET_multiprocess_feature, | |
2040 | ||
2041 | /* Support for enabling and disabling tracepoints while a trace | |
2042 | experiment is running. */ | |
2043 | PACKET_EnableDisableTracepoints_feature, | |
2044 | ||
2045 | /* Support for collecting strings using the tracenz bytecode. */ | |
2046 | PACKET_tracenz_feature, | |
2047 | ||
2048 | /* Support for continuing to run a trace experiment while GDB is | |
2049 | disconnected. */ | |
2050 | PACKET_DisconnectedTracing_feature, | |
2051 | ||
2052 | /* Support for qXfer:libraries-svr4:read with a non-empty annex. */ | |
2053 | PACKET_augmented_libraries_svr4_read_feature, | |
2054 | ||
f4abbc16 MM |
2055 | /* Support for the qXfer:btrace-conf:read packet. */ |
2056 | PACKET_qXfer_btrace_conf, | |
2057 | ||
d33501a5 MM |
2058 | /* Support for the Qbtrace-conf:bts:size packet. */ |
2059 | PACKET_Qbtrace_conf_bts_size, | |
2060 | ||
f7e6eed5 PA |
2061 | /* Support for swbreak+ feature. */ |
2062 | PACKET_swbreak_feature, | |
2063 | ||
2064 | /* Support for hwbreak+ feature. */ | |
2065 | PACKET_hwbreak_feature, | |
2066 | ||
89245bc0 DB |
2067 | /* Support for fork events. */ |
2068 | PACKET_fork_event_feature, | |
2069 | ||
2070 | /* Support for vfork events. */ | |
2071 | PACKET_vfork_event_feature, | |
2072 | ||
b20a6524 MM |
2073 | /* Support for the Qbtrace-conf:pt:size packet. */ |
2074 | PACKET_Qbtrace_conf_pt_size, | |
2075 | ||
94585166 DB |
2076 | /* Support for exec events. */ |
2077 | PACKET_exec_event_feature, | |
2078 | ||
750ce8d1 YQ |
2079 | /* Support for query supported vCont actions. */ |
2080 | PACKET_vContSupported, | |
2081 | ||
de979965 PA |
2082 | /* Support remote CTRL-C. */ |
2083 | PACKET_vCtrlC, | |
2084 | ||
f2faf941 PA |
2085 | /* Support TARGET_WAITKIND_NO_RESUMED. */ |
2086 | PACKET_no_resumed, | |
2087 | ||
444abaca DJ |
2088 | PACKET_MAX |
2089 | }; | |
506fb367 | 2090 | |
444abaca | 2091 | static struct packet_config remote_protocol_packets[PACKET_MAX]; |
dc8acb97 | 2092 | |
f7e6eed5 PA |
2093 | /* Returns the packet's corresponding "set remote foo-packet" command |
2094 | state. See struct packet_config for more details. */ | |
2095 | ||
2096 | static enum auto_boolean | |
2097 | packet_set_cmd_state (int packet) | |
2098 | { | |
2099 | return remote_protocol_packets[packet].detect; | |
2100 | } | |
2101 | ||
4082afcc PA |
2102 | /* Returns whether a given packet or feature is supported. This takes |
2103 | into account the state of the corresponding "set remote foo-packet" | |
2104 | command, which may be used to bypass auto-detection. */ | |
dc8acb97 | 2105 | |
4082afcc PA |
2106 | static enum packet_support |
2107 | packet_config_support (struct packet_config *config) | |
2108 | { | |
2109 | switch (config->detect) | |
444abaca | 2110 | { |
4082afcc PA |
2111 | case AUTO_BOOLEAN_TRUE: |
2112 | return PACKET_ENABLE; | |
2113 | case AUTO_BOOLEAN_FALSE: | |
2114 | return PACKET_DISABLE; | |
2115 | case AUTO_BOOLEAN_AUTO: | |
2116 | return config->support; | |
2117 | default: | |
2118 | gdb_assert_not_reached (_("bad switch")); | |
444abaca | 2119 | } |
4082afcc PA |
2120 | } |
2121 | ||
2122 | /* Same as packet_config_support, but takes the packet's enum value as | |
2123 | argument. */ | |
2124 | ||
2125 | static enum packet_support | |
2126 | packet_support (int packet) | |
2127 | { | |
2128 | struct packet_config *config = &remote_protocol_packets[packet]; | |
2129 | ||
2130 | return packet_config_support (config); | |
dc8acb97 MS |
2131 | } |
2132 | ||
5a2468f5 | 2133 | static void |
444abaca DJ |
2134 | show_remote_protocol_packet_cmd (struct ui_file *file, int from_tty, |
2135 | struct cmd_list_element *c, | |
2136 | const char *value) | |
5a2468f5 | 2137 | { |
444abaca | 2138 | struct packet_config *packet; |
5a2468f5 | 2139 | |
444abaca DJ |
2140 | for (packet = remote_protocol_packets; |
2141 | packet < &remote_protocol_packets[PACKET_MAX]; | |
2142 | packet++) | |
2143 | { | |
2144 | if (&packet->detect == c->var) | |
2145 | { | |
2146 | show_packet_config_cmd (packet); | |
2147 | return; | |
2148 | } | |
2149 | } | |
9b20d036 | 2150 | internal_error (__FILE__, __LINE__, _("Could not find config for %s"), |
444abaca | 2151 | c->name); |
5a2468f5 JM |
2152 | } |
2153 | ||
d471ea57 AC |
2154 | /* Should we try one of the 'Z' requests? */ |
2155 | ||
2156 | enum Z_packet_type | |
2157 | { | |
2158 | Z_PACKET_SOFTWARE_BP, | |
2159 | Z_PACKET_HARDWARE_BP, | |
2160 | Z_PACKET_WRITE_WP, | |
2161 | Z_PACKET_READ_WP, | |
2162 | Z_PACKET_ACCESS_WP, | |
2163 | NR_Z_PACKET_TYPES | |
2164 | }; | |
96baa820 | 2165 | |
d471ea57 | 2166 | /* For compatibility with older distributions. Provide a ``set remote |
23860348 | 2167 | Z-packet ...'' command that updates all the Z packet types. */ |
d471ea57 | 2168 | |
7f19b9a2 | 2169 | static enum auto_boolean remote_Z_packet_detect; |
96baa820 JM |
2170 | |
2171 | static void | |
eb4c3f4a | 2172 | set_remote_protocol_Z_packet_cmd (const char *args, int from_tty, |
fba45db2 | 2173 | struct cmd_list_element *c) |
96baa820 | 2174 | { |
d471ea57 | 2175 | int i; |
a744cf53 | 2176 | |
d471ea57 | 2177 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
4082afcc | 2178 | remote_protocol_packets[PACKET_Z0 + i].detect = remote_Z_packet_detect; |
96baa820 JM |
2179 | } |
2180 | ||
2181 | static void | |
08546159 AC |
2182 | show_remote_protocol_Z_packet_cmd (struct ui_file *file, int from_tty, |
2183 | struct cmd_list_element *c, | |
2184 | const char *value) | |
96baa820 | 2185 | { |
d471ea57 | 2186 | int i; |
a744cf53 | 2187 | |
d471ea57 AC |
2188 | for (i = 0; i < NR_Z_PACKET_TYPES; i++) |
2189 | { | |
444abaca | 2190 | show_packet_config_cmd (&remote_protocol_packets[PACKET_Z0 + i]); |
d471ea57 | 2191 | } |
96baa820 JM |
2192 | } |
2193 | ||
4082afcc PA |
2194 | /* Returns true if the multi-process extensions are in effect. */ |
2195 | ||
2196 | static int | |
2197 | remote_multi_process_p (struct remote_state *rs) | |
2198 | { | |
2199 | return packet_support (PACKET_multiprocess_feature) == PACKET_ENABLE; | |
2200 | } | |
2201 | ||
de0d863e DB |
2202 | /* Returns true if fork events are supported. */ |
2203 | ||
2204 | static int | |
2205 | remote_fork_event_p (struct remote_state *rs) | |
2206 | { | |
2207 | return packet_support (PACKET_fork_event_feature) == PACKET_ENABLE; | |
2208 | } | |
2209 | ||
c269dbdb DB |
2210 | /* Returns true if vfork events are supported. */ |
2211 | ||
2212 | static int | |
2213 | remote_vfork_event_p (struct remote_state *rs) | |
2214 | { | |
2215 | return packet_support (PACKET_vfork_event_feature) == PACKET_ENABLE; | |
2216 | } | |
2217 | ||
d46addbb DB |
2218 | /* Returns true if exec events are supported. */ |
2219 | ||
2220 | static int | |
2221 | remote_exec_event_p (struct remote_state *rs) | |
2222 | { | |
2223 | return packet_support (PACKET_exec_event_feature) == PACKET_ENABLE; | |
2224 | } | |
2225 | ||
cbb8991c DB |
2226 | /* Insert fork catchpoint target routine. If fork events are enabled |
2227 | then return success, nothing more to do. */ | |
2228 | ||
f6ac5f3d PA |
2229 | int |
2230 | remote_target::insert_fork_catchpoint (int pid) | |
cbb8991c DB |
2231 | { |
2232 | struct remote_state *rs = get_remote_state (); | |
2233 | ||
2234 | return !remote_fork_event_p (rs); | |
2235 | } | |
2236 | ||
2237 | /* Remove fork catchpoint target routine. Nothing to do, just | |
2238 | return success. */ | |
2239 | ||
f6ac5f3d PA |
2240 | int |
2241 | remote_target::remove_fork_catchpoint (int pid) | |
cbb8991c DB |
2242 | { |
2243 | return 0; | |
2244 | } | |
2245 | ||
2246 | /* Insert vfork catchpoint target routine. If vfork events are enabled | |
2247 | then return success, nothing more to do. */ | |
2248 | ||
f6ac5f3d PA |
2249 | int |
2250 | remote_target::insert_vfork_catchpoint (int pid) | |
cbb8991c DB |
2251 | { |
2252 | struct remote_state *rs = get_remote_state (); | |
2253 | ||
2254 | return !remote_vfork_event_p (rs); | |
2255 | } | |
2256 | ||
2257 | /* Remove vfork catchpoint target routine. Nothing to do, just | |
2258 | return success. */ | |
2259 | ||
f6ac5f3d PA |
2260 | int |
2261 | remote_target::remove_vfork_catchpoint (int pid) | |
cbb8991c DB |
2262 | { |
2263 | return 0; | |
2264 | } | |
2265 | ||
d46addbb DB |
2266 | /* Insert exec catchpoint target routine. If exec events are |
2267 | enabled, just return success. */ | |
2268 | ||
f6ac5f3d PA |
2269 | int |
2270 | remote_target::insert_exec_catchpoint (int pid) | |
d46addbb DB |
2271 | { |
2272 | struct remote_state *rs = get_remote_state (); | |
2273 | ||
2274 | return !remote_exec_event_p (rs); | |
2275 | } | |
2276 | ||
2277 | /* Remove exec catchpoint target routine. Nothing to do, just | |
2278 | return success. */ | |
2279 | ||
f6ac5f3d PA |
2280 | int |
2281 | remote_target::remove_exec_catchpoint (int pid) | |
d46addbb DB |
2282 | { |
2283 | return 0; | |
2284 | } | |
2285 | ||
c906108c SS |
2286 | \f |
2287 | ||
ffdd69cf TT |
2288 | /* Take advantage of the fact that the TID field is not used, to tag |
2289 | special ptids with it set to != 0. */ | |
2290 | static const ptid_t magic_null_ptid (42000, -1, 1); | |
2291 | static const ptid_t not_sent_ptid (42000, -2, 1); | |
2292 | static const ptid_t any_thread_ptid (42000, 0, 1); | |
79d7f229 | 2293 | |
0b16c5cf PA |
2294 | /* Find out if the stub attached to PID (and hence GDB should offer to |
2295 | detach instead of killing it when bailing out). */ | |
2296 | ||
6b8edb51 PA |
2297 | int |
2298 | remote_target::remote_query_attached (int pid) | |
0b16c5cf PA |
2299 | { |
2300 | struct remote_state *rs = get_remote_state (); | |
bba74b36 | 2301 | size_t size = get_remote_packet_size (); |
0b16c5cf | 2302 | |
4082afcc | 2303 | if (packet_support (PACKET_qAttached) == PACKET_DISABLE) |
0b16c5cf PA |
2304 | return 0; |
2305 | ||
2306 | if (remote_multi_process_p (rs)) | |
8d64371b | 2307 | xsnprintf (rs->buf.data (), size, "qAttached:%x", pid); |
0b16c5cf | 2308 | else |
8d64371b | 2309 | xsnprintf (rs->buf.data (), size, "qAttached"); |
0b16c5cf PA |
2310 | |
2311 | putpkt (rs->buf); | |
8d64371b | 2312 | getpkt (&rs->buf, 0); |
0b16c5cf PA |
2313 | |
2314 | switch (packet_ok (rs->buf, | |
1554e9be | 2315 | &remote_protocol_packets[PACKET_qAttached])) |
0b16c5cf PA |
2316 | { |
2317 | case PACKET_OK: | |
8d64371b | 2318 | if (strcmp (rs->buf.data (), "1") == 0) |
0b16c5cf PA |
2319 | return 1; |
2320 | break; | |
2321 | case PACKET_ERROR: | |
8d64371b | 2322 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
0b16c5cf PA |
2323 | break; |
2324 | case PACKET_UNKNOWN: | |
2325 | break; | |
2326 | } | |
2327 | ||
2328 | return 0; | |
2329 | } | |
2330 | ||
49c62f2e PA |
2331 | /* Add PID to GDB's inferior table. If FAKE_PID_P is true, then PID |
2332 | has been invented by GDB, instead of reported by the target. Since | |
2333 | we can be connected to a remote system before before knowing about | |
2334 | any inferior, mark the target with execution when we find the first | |
2335 | inferior. If ATTACHED is 1, then we had just attached to this | |
2336 | inferior. If it is 0, then we just created this inferior. If it | |
2337 | is -1, then try querying the remote stub to find out if it had | |
1b6e6f5c GB |
2338 | attached to the inferior or not. If TRY_OPEN_EXEC is true then |
2339 | attempt to open this inferior's executable as the main executable | |
2340 | if no main executable is open already. */ | |
1941c569 | 2341 | |
6b8edb51 | 2342 | inferior * |
9ab8741a | 2343 | remote_target::remote_add_inferior (bool fake_pid_p, int pid, int attached, |
6b8edb51 | 2344 | int try_open_exec) |
1941c569 | 2345 | { |
1941c569 PA |
2346 | struct inferior *inf; |
2347 | ||
0b16c5cf PA |
2348 | /* Check whether this process we're learning about is to be |
2349 | considered attached, or if is to be considered to have been | |
2350 | spawned by the stub. */ | |
2351 | if (attached == -1) | |
2352 | attached = remote_query_attached (pid); | |
2353 | ||
f5656ead | 2354 | if (gdbarch_has_global_solist (target_gdbarch ())) |
6c95b8df PA |
2355 | { |
2356 | /* If the target shares code across all inferiors, then every | |
2357 | attach adds a new inferior. */ | |
2358 | inf = add_inferior (pid); | |
2359 | ||
2360 | /* ... and every inferior is bound to the same program space. | |
2361 | However, each inferior may still have its own address | |
2362 | space. */ | |
2363 | inf->aspace = maybe_new_address_space (); | |
2364 | inf->pspace = current_program_space; | |
2365 | } | |
2366 | else | |
2367 | { | |
2368 | /* In the traditional debugging scenario, there's a 1-1 match | |
2369 | between program/address spaces. We simply bind the inferior | |
2370 | to the program space's address space. */ | |
2371 | inf = current_inferior (); | |
2372 | inferior_appeared (inf, pid); | |
2373 | } | |
1941c569 | 2374 | |
0b16c5cf | 2375 | inf->attach_flag = attached; |
49c62f2e | 2376 | inf->fake_pid_p = fake_pid_p; |
0b16c5cf | 2377 | |
1b6e6f5c GB |
2378 | /* If no main executable is currently open then attempt to |
2379 | open the file that was executed to create this inferior. */ | |
835205d0 | 2380 | if (try_open_exec && get_exec_file (0) == NULL) |
bb805577 | 2381 | exec_file_locate_attach (pid, 0, 1); |
1b6e6f5c | 2382 | |
1941c569 PA |
2383 | return inf; |
2384 | } | |
2385 | ||
7aabaf9d | 2386 | static remote_thread_info *get_remote_thread_info (thread_info *thread); |
00431a78 | 2387 | static remote_thread_info *get_remote_thread_info (ptid_t ptid); |
85ad3aaf | 2388 | |
1941c569 PA |
2389 | /* Add thread PTID to GDB's thread list. Tag it as executing/running |
2390 | according to RUNNING. */ | |
2391 | ||
00431a78 | 2392 | thread_info * |
6b8edb51 | 2393 | remote_target::remote_add_thread (ptid_t ptid, bool running, bool executing) |
c906108c | 2394 | { |
b7ea362b | 2395 | struct remote_state *rs = get_remote_state (); |
85ad3aaf | 2396 | struct thread_info *thread; |
b7ea362b PA |
2397 | |
2398 | /* GDB historically didn't pull threads in the initial connection | |
2399 | setup. If the remote target doesn't even have a concept of | |
2400 | threads (e.g., a bare-metal target), even if internally we | |
2401 | consider that a single-threaded target, mentioning a new thread | |
2402 | might be confusing to the user. Be silent then, preserving the | |
2403 | age old behavior. */ | |
2404 | if (rs->starting_up) | |
85ad3aaf | 2405 | thread = add_thread_silent (ptid); |
b7ea362b | 2406 | else |
85ad3aaf | 2407 | thread = add_thread (ptid); |
1941c569 | 2408 | |
7aabaf9d | 2409 | get_remote_thread_info (thread)->vcont_resumed = executing; |
0d5b594f | 2410 | set_executing (ptid, executing); |
1941c569 | 2411 | set_running (ptid, running); |
00431a78 PA |
2412 | |
2413 | return thread; | |
1941c569 PA |
2414 | } |
2415 | ||
2416 | /* Come here when we learn about a thread id from the remote target. | |
2417 | It may be the first time we hear about such thread, so take the | |
2418 | opportunity to add it to GDB's thread list. In case this is the | |
2419 | first time we're noticing its corresponding inferior, add it to | |
0d5b594f PA |
2420 | GDB's inferior list as well. EXECUTING indicates whether the |
2421 | thread is (internally) executing or stopped. */ | |
1941c569 | 2422 | |
6b8edb51 PA |
2423 | void |
2424 | remote_target::remote_notice_new_inferior (ptid_t currthread, int executing) | |
1941c569 | 2425 | { |
0d5b594f PA |
2426 | /* In non-stop mode, we assume new found threads are (externally) |
2427 | running until proven otherwise with a stop reply. In all-stop, | |
2428 | we can only get here if all threads are stopped. */ | |
2429 | int running = target_is_non_stop_p () ? 1 : 0; | |
2430 | ||
c906108c SS |
2431 | /* If this is a new thread, add it to GDB's thread list. |
2432 | If we leave it up to WFI to do this, bad things will happen. */ | |
82f73884 | 2433 | |
00431a78 PA |
2434 | thread_info *tp = find_thread_ptid (currthread); |
2435 | if (tp != NULL && tp->state == THREAD_EXITED) | |
82f73884 PA |
2436 | { |
2437 | /* We're seeing an event on a thread id we knew had exited. | |
2438 | This has to be a new thread reusing the old id. Add it. */ | |
0d5b594f | 2439 | remote_add_thread (currthread, running, executing); |
82f73884 PA |
2440 | return; |
2441 | } | |
2442 | ||
79d7f229 | 2443 | if (!in_thread_list (currthread)) |
c0a2216e | 2444 | { |
1941c569 | 2445 | struct inferior *inf = NULL; |
e99b03dc | 2446 | int pid = currthread.pid (); |
1941c569 | 2447 | |
0e998d96 | 2448 | if (inferior_ptid.is_pid () |
e99b03dc | 2449 | && pid == inferior_ptid.pid ()) |
c0a2216e PA |
2450 | { |
2451 | /* inferior_ptid has no thread member yet. This can happen | |
2452 | with the vAttach -> remote_wait,"TAAthread:" path if the | |
2453 | stub doesn't support qC. This is the first stop reported | |
2454 | after an attach, so this is the main thread. Update the | |
2455 | ptid in the thread list. */ | |
f2907e49 | 2456 | if (in_thread_list (ptid_t (pid))) |
bad34192 PA |
2457 | thread_change_ptid (inferior_ptid, currthread); |
2458 | else | |
2459 | { | |
0d5b594f | 2460 | remote_add_thread (currthread, running, executing); |
bad34192 PA |
2461 | inferior_ptid = currthread; |
2462 | } | |
dc146f7c | 2463 | return; |
c0a2216e | 2464 | } |
82f73884 | 2465 | |
d7e15655 | 2466 | if (magic_null_ptid == inferior_ptid) |
c0a2216e PA |
2467 | { |
2468 | /* inferior_ptid is not set yet. This can happen with the | |
2469 | vRun -> remote_wait,"TAAthread:" path if the stub | |
2470 | doesn't support qC. This is the first stop reported | |
2471 | after an attach, so this is the main thread. Update the | |
2472 | ptid in the thread list. */ | |
dc146f7c | 2473 | thread_change_ptid (inferior_ptid, currthread); |
82f73884 | 2474 | return; |
c0a2216e | 2475 | } |
82f73884 | 2476 | |
29c87f7f PA |
2477 | /* When connecting to a target remote, or to a target |
2478 | extended-remote which already was debugging an inferior, we | |
2479 | may not know about it yet. Add it before adding its child | |
2480 | thread, so notifications are emitted in a sensible order. */ | |
e99b03dc | 2481 | if (find_inferior_pid (currthread.pid ()) == NULL) |
49c62f2e PA |
2482 | { |
2483 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 2484 | bool fake_pid_p = !remote_multi_process_p (rs); |
49c62f2e PA |
2485 | |
2486 | inf = remote_add_inferior (fake_pid_p, | |
e99b03dc | 2487 | currthread.pid (), -1, 1); |
49c62f2e | 2488 | } |
29c87f7f | 2489 | |
82f73884 | 2490 | /* This is really a new thread. Add it. */ |
00431a78 PA |
2491 | thread_info *new_thr |
2492 | = remote_add_thread (currthread, running, executing); | |
1941c569 PA |
2493 | |
2494 | /* If we found a new inferior, let the common code do whatever | |
2495 | it needs to with it (e.g., read shared libraries, insert | |
b7ea362b PA |
2496 | breakpoints), unless we're just setting up an all-stop |
2497 | connection. */ | |
1941c569 | 2498 | if (inf != NULL) |
b7ea362b PA |
2499 | { |
2500 | struct remote_state *rs = get_remote_state (); | |
2501 | ||
6efcd9a8 | 2502 | if (!rs->starting_up) |
00431a78 | 2503 | notice_new_inferior (new_thr, executing, 0); |
b7ea362b | 2504 | } |
c0a2216e | 2505 | } |
c906108c SS |
2506 | } |
2507 | ||
85ad3aaf | 2508 | /* Return THREAD's private thread data, creating it if necessary. */ |
dc146f7c | 2509 | |
7aabaf9d SM |
2510 | static remote_thread_info * |
2511 | get_remote_thread_info (thread_info *thread) | |
dc146f7c | 2512 | { |
85ad3aaf | 2513 | gdb_assert (thread != NULL); |
dc146f7c | 2514 | |
85ad3aaf | 2515 | if (thread->priv == NULL) |
7aabaf9d | 2516 | thread->priv.reset (new remote_thread_info); |
dc146f7c | 2517 | |
7aabaf9d | 2518 | return static_cast<remote_thread_info *> (thread->priv.get ()); |
85ad3aaf PA |
2519 | } |
2520 | ||
7aabaf9d SM |
2521 | static remote_thread_info * |
2522 | get_remote_thread_info (ptid_t ptid) | |
85ad3aaf | 2523 | { |
00431a78 PA |
2524 | thread_info *thr = find_thread_ptid (ptid); |
2525 | return get_remote_thread_info (thr); | |
dc146f7c VP |
2526 | } |
2527 | ||
74531fed PA |
2528 | /* Call this function as a result of |
2529 | 1) A halt indication (T packet) containing a thread id | |
2530 | 2) A direct query of currthread | |
0df8b418 | 2531 | 3) Successful execution of set thread */ |
74531fed PA |
2532 | |
2533 | static void | |
47f8a51d | 2534 | record_currthread (struct remote_state *rs, ptid_t currthread) |
74531fed | 2535 | { |
47f8a51d | 2536 | rs->general_thread = currthread; |
74531fed PA |
2537 | } |
2538 | ||
89be2091 DJ |
2539 | /* If 'QPassSignals' is supported, tell the remote stub what signals |
2540 | it can simply pass through to the inferior without reporting. */ | |
2541 | ||
f6ac5f3d | 2542 | void |
adc6a863 | 2543 | remote_target::pass_signals (gdb::array_view<const unsigned char> pass_signals) |
89be2091 | 2544 | { |
4082afcc | 2545 | if (packet_support (PACKET_QPassSignals) != PACKET_DISABLE) |
89be2091 DJ |
2546 | { |
2547 | char *pass_packet, *p; | |
adc6a863 | 2548 | int count = 0; |
747dc59d | 2549 | struct remote_state *rs = get_remote_state (); |
89be2091 | 2550 | |
adc6a863 PA |
2551 | gdb_assert (pass_signals.size () < 256); |
2552 | for (size_t i = 0; i < pass_signals.size (); i++) | |
89be2091 | 2553 | { |
2455069d | 2554 | if (pass_signals[i]) |
89be2091 DJ |
2555 | count++; |
2556 | } | |
224c3ddb | 2557 | pass_packet = (char *) xmalloc (count * 3 + strlen ("QPassSignals:") + 1); |
89be2091 DJ |
2558 | strcpy (pass_packet, "QPassSignals:"); |
2559 | p = pass_packet + strlen (pass_packet); | |
adc6a863 | 2560 | for (size_t i = 0; i < pass_signals.size (); i++) |
89be2091 | 2561 | { |
2455069d | 2562 | if (pass_signals[i]) |
89be2091 DJ |
2563 | { |
2564 | if (i >= 16) | |
2565 | *p++ = tohex (i >> 4); | |
2566 | *p++ = tohex (i & 15); | |
2567 | if (count) | |
2568 | *p++ = ';'; | |
2569 | else | |
2570 | break; | |
2571 | count--; | |
2572 | } | |
2573 | } | |
2574 | *p = 0; | |
747dc59d | 2575 | if (!rs->last_pass_packet || strcmp (rs->last_pass_packet, pass_packet)) |
89be2091 | 2576 | { |
89be2091 | 2577 | putpkt (pass_packet); |
8d64371b | 2578 | getpkt (&rs->buf, 0); |
8dc5b319 | 2579 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QPassSignals]); |
747dc59d TT |
2580 | if (rs->last_pass_packet) |
2581 | xfree (rs->last_pass_packet); | |
2582 | rs->last_pass_packet = pass_packet; | |
89be2091 DJ |
2583 | } |
2584 | else | |
2585 | xfree (pass_packet); | |
2586 | } | |
2587 | } | |
2588 | ||
82075af2 JS |
2589 | /* If 'QCatchSyscalls' is supported, tell the remote stub |
2590 | to report syscalls to GDB. */ | |
2591 | ||
f6ac5f3d PA |
2592 | int |
2593 | remote_target::set_syscall_catchpoint (int pid, bool needed, int any_count, | |
2594 | gdb::array_view<const int> syscall_counts) | |
82075af2 | 2595 | { |
b80406ac | 2596 | const char *catch_packet; |
82075af2 JS |
2597 | enum packet_result result; |
2598 | int n_sysno = 0; | |
2599 | ||
2600 | if (packet_support (PACKET_QCatchSyscalls) == PACKET_DISABLE) | |
2601 | { | |
2602 | /* Not supported. */ | |
2603 | return 1; | |
2604 | } | |
2605 | ||
649a140c | 2606 | if (needed && any_count == 0) |
82075af2 | 2607 | { |
649a140c PA |
2608 | /* Count how many syscalls are to be caught. */ |
2609 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2610 | { |
649a140c | 2611 | if (syscall_counts[i] != 0) |
82075af2 JS |
2612 | n_sysno++; |
2613 | } | |
2614 | } | |
2615 | ||
2616 | if (remote_debug) | |
2617 | { | |
2618 | fprintf_unfiltered (gdb_stdlog, | |
2619 | "remote_set_syscall_catchpoint " | |
2620 | "pid %d needed %d any_count %d n_sysno %d\n", | |
2621 | pid, needed, any_count, n_sysno); | |
2622 | } | |
2623 | ||
1b81856f | 2624 | std::string built_packet; |
82075af2 JS |
2625 | if (needed) |
2626 | { | |
2627 | /* Prepare a packet with the sysno list, assuming max 8+1 | |
2628 | characters for a sysno. If the resulting packet size is too | |
2629 | big, fallback on the non-selective packet. */ | |
2630 | const int maxpktsz = strlen ("QCatchSyscalls:1") + n_sysno * 9 + 1; | |
1b81856f PA |
2631 | built_packet.reserve (maxpktsz); |
2632 | built_packet = "QCatchSyscalls:1"; | |
649a140c | 2633 | if (any_count == 0) |
82075af2 | 2634 | { |
649a140c PA |
2635 | /* Add in each syscall to be caught. */ |
2636 | for (size_t i = 0; i < syscall_counts.size (); i++) | |
82075af2 | 2637 | { |
649a140c PA |
2638 | if (syscall_counts[i] != 0) |
2639 | string_appendf (built_packet, ";%zx", i); | |
82075af2 JS |
2640 | } |
2641 | } | |
1b81856f | 2642 | if (built_packet.size () > get_remote_packet_size ()) |
82075af2 JS |
2643 | { |
2644 | /* catch_packet too big. Fallback to less efficient | |
2645 | non selective mode, with GDB doing the filtering. */ | |
b80406ac | 2646 | catch_packet = "QCatchSyscalls:1"; |
82075af2 | 2647 | } |
b80406ac | 2648 | else |
1b81856f | 2649 | catch_packet = built_packet.c_str (); |
82075af2 JS |
2650 | } |
2651 | else | |
b80406ac | 2652 | catch_packet = "QCatchSyscalls:0"; |
82075af2 | 2653 | |
b80406ac | 2654 | struct remote_state *rs = get_remote_state (); |
82075af2 | 2655 | |
b80406ac | 2656 | putpkt (catch_packet); |
8d64371b | 2657 | getpkt (&rs->buf, 0); |
b80406ac TT |
2658 | result = packet_ok (rs->buf, &remote_protocol_packets[PACKET_QCatchSyscalls]); |
2659 | if (result == PACKET_OK) | |
2660 | return 0; | |
2661 | else | |
2662 | return -1; | |
82075af2 JS |
2663 | } |
2664 | ||
9b224c5e PA |
2665 | /* If 'QProgramSignals' is supported, tell the remote stub what |
2666 | signals it should pass through to the inferior when detaching. */ | |
2667 | ||
f6ac5f3d | 2668 | void |
adc6a863 | 2669 | remote_target::program_signals (gdb::array_view<const unsigned char> signals) |
9b224c5e | 2670 | { |
4082afcc | 2671 | if (packet_support (PACKET_QProgramSignals) != PACKET_DISABLE) |
9b224c5e PA |
2672 | { |
2673 | char *packet, *p; | |
adc6a863 | 2674 | int count = 0; |
5e4a05c4 | 2675 | struct remote_state *rs = get_remote_state (); |
9b224c5e | 2676 | |
adc6a863 PA |
2677 | gdb_assert (signals.size () < 256); |
2678 | for (size_t i = 0; i < signals.size (); i++) | |
9b224c5e PA |
2679 | { |
2680 | if (signals[i]) | |
2681 | count++; | |
2682 | } | |
224c3ddb | 2683 | packet = (char *) xmalloc (count * 3 + strlen ("QProgramSignals:") + 1); |
9b224c5e PA |
2684 | strcpy (packet, "QProgramSignals:"); |
2685 | p = packet + strlen (packet); | |
adc6a863 | 2686 | for (size_t i = 0; i < signals.size (); i++) |
9b224c5e PA |
2687 | { |
2688 | if (signal_pass_state (i)) | |
2689 | { | |
2690 | if (i >= 16) | |
2691 | *p++ = tohex (i >> 4); | |
2692 | *p++ = tohex (i & 15); | |
2693 | if (count) | |
2694 | *p++ = ';'; | |
2695 | else | |
2696 | break; | |
2697 | count--; | |
2698 | } | |
2699 | } | |
2700 | *p = 0; | |
5e4a05c4 TT |
2701 | if (!rs->last_program_signals_packet |
2702 | || strcmp (rs->last_program_signals_packet, packet) != 0) | |
9b224c5e | 2703 | { |
9b224c5e | 2704 | putpkt (packet); |
8d64371b | 2705 | getpkt (&rs->buf, 0); |
8dc5b319 | 2706 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_QProgramSignals]); |
5e4a05c4 TT |
2707 | xfree (rs->last_program_signals_packet); |
2708 | rs->last_program_signals_packet = packet; | |
9b224c5e PA |
2709 | } |
2710 | else | |
2711 | xfree (packet); | |
2712 | } | |
2713 | } | |
2714 | ||
79d7f229 PA |
2715 | /* If PTID is MAGIC_NULL_PTID, don't set any thread. If PTID is |
2716 | MINUS_ONE_PTID, set the thread to -1, so the stub returns the | |
2717 | thread. If GEN is set, set the general thread, if not, then set | |
2718 | the step/continue thread. */ | |
6b8edb51 PA |
2719 | void |
2720 | remote_target::set_thread (ptid_t ptid, int gen) | |
c906108c | 2721 | { |
d01949b6 | 2722 | struct remote_state *rs = get_remote_state (); |
47f8a51d | 2723 | ptid_t state = gen ? rs->general_thread : rs->continue_thread; |
8d64371b TT |
2724 | char *buf = rs->buf.data (); |
2725 | char *endbuf = buf + get_remote_packet_size (); | |
c906108c | 2726 | |
d7e15655 | 2727 | if (state == ptid) |
c906108c SS |
2728 | return; |
2729 | ||
79d7f229 PA |
2730 | *buf++ = 'H'; |
2731 | *buf++ = gen ? 'g' : 'c'; | |
d7e15655 | 2732 | if (ptid == magic_null_ptid) |
79d7f229 | 2733 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2734 | else if (ptid == any_thread_ptid) |
79d7f229 | 2735 | xsnprintf (buf, endbuf - buf, "0"); |
d7e15655 | 2736 | else if (ptid == minus_one_ptid) |
79d7f229 PA |
2737 | xsnprintf (buf, endbuf - buf, "-1"); |
2738 | else | |
82f73884 | 2739 | write_ptid (buf, endbuf, ptid); |
79d7f229 | 2740 | putpkt (rs->buf); |
8d64371b | 2741 | getpkt (&rs->buf, 0); |
c906108c | 2742 | if (gen) |
47f8a51d | 2743 | rs->general_thread = ptid; |
c906108c | 2744 | else |
47f8a51d | 2745 | rs->continue_thread = ptid; |
c906108c | 2746 | } |
79d7f229 | 2747 | |
6b8edb51 PA |
2748 | void |
2749 | remote_target::set_general_thread (ptid_t ptid) | |
79d7f229 PA |
2750 | { |
2751 | set_thread (ptid, 1); | |
2752 | } | |
2753 | ||
6b8edb51 PA |
2754 | void |
2755 | remote_target::set_continue_thread (ptid_t ptid) | |
79d7f229 PA |
2756 | { |
2757 | set_thread (ptid, 0); | |
2758 | } | |
2759 | ||
3c9c4b83 PA |
2760 | /* Change the remote current process. Which thread within the process |
2761 | ends up selected isn't important, as long as it is the same process | |
2762 | as what INFERIOR_PTID points to. | |
2763 | ||
2764 | This comes from that fact that there is no explicit notion of | |
2765 | "selected process" in the protocol. The selected process for | |
2766 | general operations is the process the selected general thread | |
2767 | belongs to. */ | |
2768 | ||
6b8edb51 PA |
2769 | void |
2770 | remote_target::set_general_process () | |
3c9c4b83 PA |
2771 | { |
2772 | struct remote_state *rs = get_remote_state (); | |
2773 | ||
2774 | /* If the remote can't handle multiple processes, don't bother. */ | |
8020350c | 2775 | if (!remote_multi_process_p (rs)) |
3c9c4b83 PA |
2776 | return; |
2777 | ||
2778 | /* We only need to change the remote current thread if it's pointing | |
2779 | at some other process. */ | |
e99b03dc | 2780 | if (rs->general_thread.pid () != inferior_ptid.pid ()) |
3c9c4b83 PA |
2781 | set_general_thread (inferior_ptid); |
2782 | } | |
2783 | ||
c906108c | 2784 | \f |
7d1a114c PA |
2785 | /* Return nonzero if this is the main thread that we made up ourselves |
2786 | to model non-threaded targets as single-threaded. */ | |
c906108c SS |
2787 | |
2788 | static int | |
f6ac5f3d | 2789 | remote_thread_always_alive (ptid_t ptid) |
c906108c | 2790 | { |
d7e15655 | 2791 | if (ptid == magic_null_ptid) |
c0a2216e PA |
2792 | /* The main thread is always alive. */ |
2793 | return 1; | |
2794 | ||
e38504b3 | 2795 | if (ptid.pid () != 0 && ptid.lwp () == 0) |
c0a2216e PA |
2796 | /* The main thread is always alive. This can happen after a |
2797 | vAttach, if the remote side doesn't support | |
2798 | multi-threading. */ | |
2799 | return 1; | |
2800 | ||
7d1a114c PA |
2801 | return 0; |
2802 | } | |
2803 | ||
2804 | /* Return nonzero if the thread PTID is still alive on the remote | |
2805 | system. */ | |
2806 | ||
57810aa7 | 2807 | bool |
f6ac5f3d | 2808 | remote_target::thread_alive (ptid_t ptid) |
7d1a114c PA |
2809 | { |
2810 | struct remote_state *rs = get_remote_state (); | |
2811 | char *p, *endp; | |
2812 | ||
2813 | /* Check if this is a thread that we made up ourselves to model | |
2814 | non-threaded targets as single-threaded. */ | |
f6ac5f3d | 2815 | if (remote_thread_always_alive (ptid)) |
7d1a114c PA |
2816 | return 1; |
2817 | ||
8d64371b TT |
2818 | p = rs->buf.data (); |
2819 | endp = p + get_remote_packet_size (); | |
82f73884 PA |
2820 | |
2821 | *p++ = 'T'; | |
2822 | write_ptid (p, endp, ptid); | |
2823 | ||
2e9f7625 | 2824 | putpkt (rs->buf); |
8d64371b | 2825 | getpkt (&rs->buf, 0); |
2e9f7625 | 2826 | return (rs->buf[0] == 'O' && rs->buf[1] == 'K'); |
c906108c SS |
2827 | } |
2828 | ||
79efa585 SM |
2829 | /* Return a pointer to a thread name if we know it and NULL otherwise. |
2830 | The thread_info object owns the memory for the name. */ | |
2831 | ||
f6ac5f3d PA |
2832 | const char * |
2833 | remote_target::thread_name (struct thread_info *info) | |
79efa585 SM |
2834 | { |
2835 | if (info->priv != NULL) | |
a9334058 SM |
2836 | { |
2837 | const std::string &name = get_remote_thread_info (info)->name; | |
2838 | return !name.empty () ? name.c_str () : NULL; | |
2839 | } | |
79efa585 SM |
2840 | |
2841 | return NULL; | |
2842 | } | |
2843 | ||
c906108c SS |
2844 | /* About these extended threadlist and threadinfo packets. They are |
2845 | variable length packets but, the fields within them are often fixed | |
2846 | length. They are redundent enough to send over UDP as is the | |
2847 | remote protocol in general. There is a matching unit test module | |
2848 | in libstub. */ | |
2849 | ||
23860348 | 2850 | /* WARNING: This threadref data structure comes from the remote O.S., |
0df8b418 | 2851 | libstub protocol encoding, and remote.c. It is not particularly |
23860348 | 2852 | changable. */ |
cce74817 JM |
2853 | |
2854 | /* Right now, the internal structure is int. We want it to be bigger. | |
0df8b418 | 2855 | Plan to fix this. */ |
cce74817 | 2856 | |
23860348 | 2857 | typedef int gdb_threadref; /* Internal GDB thread reference. */ |
cce74817 | 2858 | |
9d1f7ab2 | 2859 | /* gdb_ext_thread_info is an internal GDB data structure which is |
cfde0993 | 2860 | equivalent to the reply of the remote threadinfo packet. */ |
cce74817 JM |
2861 | |
2862 | struct gdb_ext_thread_info | |
c5aa993b | 2863 | { |
23860348 | 2864 | threadref threadid; /* External form of thread reference. */ |
2bc416ba | 2865 | int active; /* Has state interesting to GDB? |
23860348 | 2866 | regs, stack. */ |
2bc416ba | 2867 | char display[256]; /* Brief state display, name, |
cedea757 | 2868 | blocked/suspended. */ |
23860348 | 2869 | char shortname[32]; /* To be used to name threads. */ |
2bc416ba | 2870 | char more_display[256]; /* Long info, statistics, queue depth, |
23860348 | 2871 | whatever. */ |
c5aa993b | 2872 | }; |
cce74817 JM |
2873 | |
2874 | /* The volume of remote transfers can be limited by submitting | |
2875 | a mask containing bits specifying the desired information. | |
2876 | Use a union of these values as the 'selection' parameter to | |
0df8b418 | 2877 | get_thread_info. FIXME: Make these TAG names more thread specific. */ |
cce74817 JM |
2878 | |
2879 | #define TAG_THREADID 1 | |
2880 | #define TAG_EXISTS 2 | |
2881 | #define TAG_DISPLAY 4 | |
2882 | #define TAG_THREADNAME 8 | |
c5aa993b | 2883 | #define TAG_MOREDISPLAY 16 |
cce74817 | 2884 | |
23860348 | 2885 | #define BUF_THREAD_ID_SIZE (OPAQUETHREADBYTES * 2) |
c906108c | 2886 | |
a14ed312 | 2887 | static char *unpack_nibble (char *buf, int *val); |
cce74817 | 2888 | |
a14ed312 | 2889 | static char *unpack_byte (char *buf, int *value); |
cce74817 | 2890 | |
a14ed312 | 2891 | static char *pack_int (char *buf, int value); |
cce74817 | 2892 | |
a14ed312 | 2893 | static char *unpack_int (char *buf, int *value); |
cce74817 | 2894 | |
a14ed312 | 2895 | static char *unpack_string (char *src, char *dest, int length); |
cce74817 | 2896 | |
23860348 | 2897 | static char *pack_threadid (char *pkt, threadref *id); |
cce74817 | 2898 | |
23860348 | 2899 | static char *unpack_threadid (char *inbuf, threadref *id); |
cce74817 | 2900 | |
23860348 | 2901 | void int_to_threadref (threadref *id, int value); |
cce74817 | 2902 | |
23860348 | 2903 | static int threadref_to_int (threadref *ref); |
cce74817 | 2904 | |
23860348 | 2905 | static void copy_threadref (threadref *dest, threadref *src); |
cce74817 | 2906 | |
23860348 | 2907 | static int threadmatch (threadref *dest, threadref *src); |
cce74817 | 2908 | |
2bc416ba | 2909 | static char *pack_threadinfo_request (char *pkt, int mode, |
23860348 | 2910 | threadref *id); |
cce74817 | 2911 | |
a14ed312 KB |
2912 | static char *pack_threadlist_request (char *pkt, int startflag, |
2913 | int threadcount, | |
23860348 | 2914 | threadref *nextthread); |
cce74817 | 2915 | |
23860348 | 2916 | static int remote_newthread_step (threadref *ref, void *context); |
cce74817 | 2917 | |
82f73884 PA |
2918 | |
2919 | /* Write a PTID to BUF. ENDBUF points to one-passed-the-end of the | |
2920 | buffer we're allowed to write to. Returns | |
2921 | BUF+CHARACTERS_WRITTEN. */ | |
2922 | ||
6b8edb51 PA |
2923 | char * |
2924 | remote_target::write_ptid (char *buf, const char *endbuf, ptid_t ptid) | |
82f73884 PA |
2925 | { |
2926 | int pid, tid; | |
2927 | struct remote_state *rs = get_remote_state (); | |
2928 | ||
2929 | if (remote_multi_process_p (rs)) | |
2930 | { | |
e99b03dc | 2931 | pid = ptid.pid (); |
82f73884 PA |
2932 | if (pid < 0) |
2933 | buf += xsnprintf (buf, endbuf - buf, "p-%x.", -pid); | |
2934 | else | |
2935 | buf += xsnprintf (buf, endbuf - buf, "p%x.", pid); | |
2936 | } | |
e38504b3 | 2937 | tid = ptid.lwp (); |
82f73884 PA |
2938 | if (tid < 0) |
2939 | buf += xsnprintf (buf, endbuf - buf, "-%x", -tid); | |
2940 | else | |
2941 | buf += xsnprintf (buf, endbuf - buf, "%x", tid); | |
2942 | ||
2943 | return buf; | |
2944 | } | |
2945 | ||
256642e8 PA |
2946 | /* Extract a PTID from BUF. If non-null, OBUF is set to one past the |
2947 | last parsed char. Returns null_ptid if no thread id is found, and | |
2948 | throws an error if the thread id has an invalid format. */ | |
82f73884 PA |
2949 | |
2950 | static ptid_t | |
256642e8 | 2951 | read_ptid (const char *buf, const char **obuf) |
82f73884 | 2952 | { |
256642e8 PA |
2953 | const char *p = buf; |
2954 | const char *pp; | |
82f73884 | 2955 | ULONGEST pid = 0, tid = 0; |
82f73884 PA |
2956 | |
2957 | if (*p == 'p') | |
2958 | { | |
2959 | /* Multi-process ptid. */ | |
2960 | pp = unpack_varlen_hex (p + 1, &pid); | |
2961 | if (*pp != '.') | |
b37520b6 | 2962 | error (_("invalid remote ptid: %s"), p); |
82f73884 PA |
2963 | |
2964 | p = pp; | |
2965 | pp = unpack_varlen_hex (p + 1, &tid); | |
2966 | if (obuf) | |
2967 | *obuf = pp; | |
fd79271b | 2968 | return ptid_t (pid, tid, 0); |
82f73884 PA |
2969 | } |
2970 | ||
2971 | /* No multi-process. Just a tid. */ | |
2972 | pp = unpack_varlen_hex (p, &tid); | |
2973 | ||
c9f35b34 KB |
2974 | /* Return null_ptid when no thread id is found. */ |
2975 | if (p == pp) | |
2976 | { | |
2977 | if (obuf) | |
2978 | *obuf = pp; | |
2979 | return null_ptid; | |
2980 | } | |
2981 | ||
82f73884 | 2982 | /* Since the stub is not sending a process id, then default to |
ca19bf23 PA |
2983 | what's in inferior_ptid, unless it's null at this point. If so, |
2984 | then since there's no way to know the pid of the reported | |
2985 | threads, use the magic number. */ | |
d7e15655 | 2986 | if (inferior_ptid == null_ptid) |
e99b03dc | 2987 | pid = magic_null_ptid.pid (); |
ca19bf23 | 2988 | else |
e99b03dc | 2989 | pid = inferior_ptid.pid (); |
82f73884 PA |
2990 | |
2991 | if (obuf) | |
2992 | *obuf = pp; | |
fd79271b | 2993 | return ptid_t (pid, tid, 0); |
82f73884 PA |
2994 | } |
2995 | ||
c906108c | 2996 | static int |
fba45db2 | 2997 | stubhex (int ch) |
c906108c SS |
2998 | { |
2999 | if (ch >= 'a' && ch <= 'f') | |
3000 | return ch - 'a' + 10; | |
3001 | if (ch >= '0' && ch <= '9') | |
3002 | return ch - '0'; | |
3003 | if (ch >= 'A' && ch <= 'F') | |
3004 | return ch - 'A' + 10; | |
3005 | return -1; | |
3006 | } | |
3007 | ||
3008 | static int | |
fba45db2 | 3009 | stub_unpack_int (char *buff, int fieldlength) |
c906108c SS |
3010 | { |
3011 | int nibble; | |
3012 | int retval = 0; | |
3013 | ||
3014 | while (fieldlength) | |
3015 | { | |
3016 | nibble = stubhex (*buff++); | |
3017 | retval |= nibble; | |
3018 | fieldlength--; | |
3019 | if (fieldlength) | |
3020 | retval = retval << 4; | |
3021 | } | |
3022 | return retval; | |
3023 | } | |
3024 | ||
c906108c | 3025 | static char * |
fba45db2 | 3026 | unpack_nibble (char *buf, int *val) |
c906108c | 3027 | { |
b7589f7d | 3028 | *val = fromhex (*buf++); |
c906108c SS |
3029 | return buf; |
3030 | } | |
3031 | ||
c906108c | 3032 | static char * |
fba45db2 | 3033 | unpack_byte (char *buf, int *value) |
c906108c SS |
3034 | { |
3035 | *value = stub_unpack_int (buf, 2); | |
3036 | return buf + 2; | |
3037 | } | |
3038 | ||
3039 | static char * | |
fba45db2 | 3040 | pack_int (char *buf, int value) |
c906108c SS |
3041 | { |
3042 | buf = pack_hex_byte (buf, (value >> 24) & 0xff); | |
3043 | buf = pack_hex_byte (buf, (value >> 16) & 0xff); | |
3044 | buf = pack_hex_byte (buf, (value >> 8) & 0x0ff); | |
3045 | buf = pack_hex_byte (buf, (value & 0xff)); | |
3046 | return buf; | |
3047 | } | |
3048 | ||
3049 | static char * | |
fba45db2 | 3050 | unpack_int (char *buf, int *value) |
c906108c SS |
3051 | { |
3052 | *value = stub_unpack_int (buf, 8); | |
3053 | return buf + 8; | |
3054 | } | |
3055 | ||
23860348 | 3056 | #if 0 /* Currently unused, uncomment when needed. */ |
a14ed312 | 3057 | static char *pack_string (char *pkt, char *string); |
c906108c SS |
3058 | |
3059 | static char * | |
fba45db2 | 3060 | pack_string (char *pkt, char *string) |
c906108c SS |
3061 | { |
3062 | char ch; | |
3063 | int len; | |
3064 | ||
3065 | len = strlen (string); | |
3066 | if (len > 200) | |
23860348 | 3067 | len = 200; /* Bigger than most GDB packets, junk??? */ |
c906108c SS |
3068 | pkt = pack_hex_byte (pkt, len); |
3069 | while (len-- > 0) | |
3070 | { | |
3071 | ch = *string++; | |
3072 | if ((ch == '\0') || (ch == '#')) | |
23860348 | 3073 | ch = '*'; /* Protect encapsulation. */ |
c906108c SS |
3074 | *pkt++ = ch; |
3075 | } | |
3076 | return pkt; | |
3077 | } | |
3078 | #endif /* 0 (unused) */ | |
3079 | ||
3080 | static char * | |
fba45db2 | 3081 | unpack_string (char *src, char *dest, int length) |
c906108c SS |
3082 | { |
3083 | while (length--) | |
3084 | *dest++ = *src++; | |
3085 | *dest = '\0'; | |
3086 | return src; | |
3087 | } | |
3088 | ||
3089 | static char * | |
fba45db2 | 3090 | pack_threadid (char *pkt, threadref *id) |
c906108c SS |
3091 | { |
3092 | char *limit; | |
3093 | unsigned char *altid; | |
3094 | ||
3095 | altid = (unsigned char *) id; | |
3096 | limit = pkt + BUF_THREAD_ID_SIZE; | |
3097 | while (pkt < limit) | |
3098 | pkt = pack_hex_byte (pkt, *altid++); | |
3099 | return pkt; | |
3100 | } | |
3101 | ||
3102 | ||
3103 | static char * | |
fba45db2 | 3104 | unpack_threadid (char *inbuf, threadref *id) |
c906108c SS |
3105 | { |
3106 | char *altref; | |
3107 | char *limit = inbuf + BUF_THREAD_ID_SIZE; | |
3108 | int x, y; | |
3109 | ||
3110 | altref = (char *) id; | |
3111 | ||
3112 | while (inbuf < limit) | |
3113 | { | |
3114 | x = stubhex (*inbuf++); | |
3115 | y = stubhex (*inbuf++); | |
3116 | *altref++ = (x << 4) | y; | |
3117 | } | |
3118 | return inbuf; | |
3119 | } | |
3120 | ||
3121 | /* Externally, threadrefs are 64 bits but internally, they are still | |
0df8b418 | 3122 | ints. This is due to a mismatch of specifications. We would like |
c906108c SS |
3123 | to use 64bit thread references internally. This is an adapter |
3124 | function. */ | |
3125 | ||
3126 | void | |
fba45db2 | 3127 | int_to_threadref (threadref *id, int value) |
c906108c SS |
3128 | { |
3129 | unsigned char *scan; | |
3130 | ||
3131 | scan = (unsigned char *) id; | |
3132 | { | |
3133 | int i = 4; | |
3134 | while (i--) | |
3135 | *scan++ = 0; | |
3136 | } | |
3137 | *scan++ = (value >> 24) & 0xff; | |
3138 | *scan++ = (value >> 16) & 0xff; | |
3139 | *scan++ = (value >> 8) & 0xff; | |
3140 | *scan++ = (value & 0xff); | |
3141 | } | |
3142 | ||
3143 | static int | |
fba45db2 | 3144 | threadref_to_int (threadref *ref) |
c906108c SS |
3145 | { |
3146 | int i, value = 0; | |
3147 | unsigned char *scan; | |
3148 | ||
cfd77fa1 | 3149 | scan = *ref; |
c906108c SS |
3150 | scan += 4; |
3151 | i = 4; | |
3152 | while (i-- > 0) | |
3153 | value = (value << 8) | ((*scan++) & 0xff); | |
3154 | return value; | |
3155 | } | |
3156 | ||
3157 | static void | |
fba45db2 | 3158 | copy_threadref (threadref *dest, threadref *src) |
c906108c SS |
3159 | { |
3160 | int i; | |
3161 | unsigned char *csrc, *cdest; | |
3162 | ||
3163 | csrc = (unsigned char *) src; | |
3164 | cdest = (unsigned char *) dest; | |
3165 | i = 8; | |
3166 | while (i--) | |
3167 | *cdest++ = *csrc++; | |
3168 | } | |
3169 | ||
3170 | static int | |
fba45db2 | 3171 | threadmatch (threadref *dest, threadref *src) |
c906108c | 3172 | { |
23860348 | 3173 | /* Things are broken right now, so just assume we got a match. */ |
c906108c SS |
3174 | #if 0 |
3175 | unsigned char *srcp, *destp; | |
3176 | int i, result; | |
3177 | srcp = (char *) src; | |
3178 | destp = (char *) dest; | |
3179 | ||
3180 | result = 1; | |
3181 | while (i-- > 0) | |
3182 | result &= (*srcp++ == *destp++) ? 1 : 0; | |
3183 | return result; | |
3184 | #endif | |
3185 | return 1; | |
3186 | } | |
3187 | ||
3188 | /* | |
c5aa993b JM |
3189 | threadid:1, # always request threadid |
3190 | context_exists:2, | |
3191 | display:4, | |
3192 | unique_name:8, | |
3193 | more_display:16 | |
3194 | */ | |
c906108c SS |
3195 | |
3196 | /* Encoding: 'Q':8,'P':8,mask:32,threadid:64 */ | |
3197 | ||
3198 | static char * | |
fba45db2 | 3199 | pack_threadinfo_request (char *pkt, int mode, threadref *id) |
c906108c | 3200 | { |
23860348 MS |
3201 | *pkt++ = 'q'; /* Info Query */ |
3202 | *pkt++ = 'P'; /* process or thread info */ | |
3203 | pkt = pack_int (pkt, mode); /* mode */ | |
c906108c | 3204 | pkt = pack_threadid (pkt, id); /* threadid */ |
23860348 | 3205 | *pkt = '\0'; /* terminate */ |
c906108c SS |
3206 | return pkt; |
3207 | } | |
3208 | ||
23860348 | 3209 | /* These values tag the fields in a thread info response packet. */ |
c906108c | 3210 | /* Tagging the fields allows us to request specific fields and to |
23860348 | 3211 | add more fields as time goes by. */ |
c906108c | 3212 | |
23860348 | 3213 | #define TAG_THREADID 1 /* Echo the thread identifier. */ |
c5aa993b | 3214 | #define TAG_EXISTS 2 /* Is this process defined enough to |
23860348 | 3215 | fetch registers and its stack? */ |
c5aa993b | 3216 | #define TAG_DISPLAY 4 /* A short thing maybe to put on a window */ |
23860348 | 3217 | #define TAG_THREADNAME 8 /* string, maps 1-to-1 with a thread is. */ |
802188a7 | 3218 | #define TAG_MOREDISPLAY 16 /* Whatever the kernel wants to say about |
23860348 | 3219 | the process. */ |
c906108c | 3220 | |
6b8edb51 PA |
3221 | int |
3222 | remote_target::remote_unpack_thread_info_response (char *pkt, | |
3223 | threadref *expectedref, | |
3224 | gdb_ext_thread_info *info) | |
c906108c | 3225 | { |
d01949b6 | 3226 | struct remote_state *rs = get_remote_state (); |
c906108c | 3227 | int mask, length; |
cfd77fa1 | 3228 | int tag; |
c906108c | 3229 | threadref ref; |
8d64371b | 3230 | char *limit = pkt + rs->buf.size (); /* Plausible parsing limit. */ |
c906108c SS |
3231 | int retval = 1; |
3232 | ||
23860348 | 3233 | /* info->threadid = 0; FIXME: implement zero_threadref. */ |
c906108c SS |
3234 | info->active = 0; |
3235 | info->display[0] = '\0'; | |
3236 | info->shortname[0] = '\0'; | |
3237 | info->more_display[0] = '\0'; | |
3238 | ||
23860348 MS |
3239 | /* Assume the characters indicating the packet type have been |
3240 | stripped. */ | |
c906108c SS |
3241 | pkt = unpack_int (pkt, &mask); /* arg mask */ |
3242 | pkt = unpack_threadid (pkt, &ref); | |
3243 | ||
3244 | if (mask == 0) | |
8a3fe4f8 | 3245 | warning (_("Incomplete response to threadinfo request.")); |
c906108c | 3246 | if (!threadmatch (&ref, expectedref)) |
23860348 | 3247 | { /* This is an answer to a different request. */ |
8a3fe4f8 | 3248 | warning (_("ERROR RMT Thread info mismatch.")); |
c906108c SS |
3249 | return 0; |
3250 | } | |
3251 | copy_threadref (&info->threadid, &ref); | |
3252 | ||
23860348 | 3253 | /* Loop on tagged fields , try to bail if somthing goes wrong. */ |
c906108c | 3254 | |
23860348 MS |
3255 | /* Packets are terminated with nulls. */ |
3256 | while ((pkt < limit) && mask && *pkt) | |
c906108c SS |
3257 | { |
3258 | pkt = unpack_int (pkt, &tag); /* tag */ | |
23860348 MS |
3259 | pkt = unpack_byte (pkt, &length); /* length */ |
3260 | if (!(tag & mask)) /* Tags out of synch with mask. */ | |
c906108c | 3261 | { |
8a3fe4f8 | 3262 | warning (_("ERROR RMT: threadinfo tag mismatch.")); |
c906108c SS |
3263 | retval = 0; |
3264 | break; | |
3265 | } | |
3266 | if (tag == TAG_THREADID) | |
3267 | { | |
3268 | if (length != 16) | |
3269 | { | |
8a3fe4f8 | 3270 | warning (_("ERROR RMT: length of threadid is not 16.")); |
c906108c SS |
3271 | retval = 0; |
3272 | break; | |
3273 | } | |
3274 | pkt = unpack_threadid (pkt, &ref); | |
3275 | mask = mask & ~TAG_THREADID; | |
3276 | continue; | |
3277 | } | |
3278 | if (tag == TAG_EXISTS) | |
3279 | { | |
3280 | info->active = stub_unpack_int (pkt, length); | |
3281 | pkt += length; | |
3282 | mask = mask & ~(TAG_EXISTS); | |
3283 | if (length > 8) | |
3284 | { | |
8a3fe4f8 | 3285 | warning (_("ERROR RMT: 'exists' length too long.")); |
c906108c SS |
3286 | retval = 0; |
3287 | break; | |
3288 | } | |
3289 | continue; | |
3290 | } | |
3291 | if (tag == TAG_THREADNAME) | |
3292 | { | |
3293 | pkt = unpack_string (pkt, &info->shortname[0], length); | |
3294 | mask = mask & ~TAG_THREADNAME; | |
3295 | continue; | |
3296 | } | |
3297 | if (tag == TAG_DISPLAY) | |
3298 | { | |
3299 | pkt = unpack_string (pkt, &info->display[0], length); | |
3300 | mask = mask & ~TAG_DISPLAY; | |
3301 | continue; | |
3302 | } | |
3303 | if (tag == TAG_MOREDISPLAY) | |
3304 | { | |
3305 | pkt = unpack_string (pkt, &info->more_display[0], length); | |
3306 | mask = mask & ~TAG_MOREDISPLAY; | |
3307 | continue; | |
3308 | } | |
8a3fe4f8 | 3309 | warning (_("ERROR RMT: unknown thread info tag.")); |
23860348 | 3310 | break; /* Not a tag we know about. */ |
c906108c SS |
3311 | } |
3312 | return retval; | |
3313 | } | |
3314 | ||
6b8edb51 PA |
3315 | int |
3316 | remote_target::remote_get_threadinfo (threadref *threadid, | |
3317 | int fieldset, | |
3318 | gdb_ext_thread_info *info) | |
c906108c | 3319 | { |
d01949b6 | 3320 | struct remote_state *rs = get_remote_state (); |
c906108c | 3321 | int result; |
c906108c | 3322 | |
8d64371b | 3323 | pack_threadinfo_request (rs->buf.data (), fieldset, threadid); |
2e9f7625 | 3324 | putpkt (rs->buf); |
8d64371b | 3325 | getpkt (&rs->buf, 0); |
3084dd77 PA |
3326 | |
3327 | if (rs->buf[0] == '\0') | |
3328 | return 0; | |
3329 | ||
8d64371b | 3330 | result = remote_unpack_thread_info_response (&rs->buf[2], |
23860348 | 3331 | threadid, info); |
c906108c SS |
3332 | return result; |
3333 | } | |
3334 | ||
c906108c SS |
3335 | /* Format: i'Q':8,i"L":8,initflag:8,batchsize:16,lastthreadid:32 */ |
3336 | ||
3337 | static char * | |
fba45db2 KB |
3338 | pack_threadlist_request (char *pkt, int startflag, int threadcount, |
3339 | threadref *nextthread) | |
c906108c SS |
3340 | { |
3341 | *pkt++ = 'q'; /* info query packet */ | |
3342 | *pkt++ = 'L'; /* Process LIST or threadLIST request */ | |
23860348 | 3343 | pkt = pack_nibble (pkt, startflag); /* initflag 1 bytes */ |
c906108c SS |
3344 | pkt = pack_hex_byte (pkt, threadcount); /* threadcount 2 bytes */ |
3345 | pkt = pack_threadid (pkt, nextthread); /* 64 bit thread identifier */ | |
3346 | *pkt = '\0'; | |
3347 | return pkt; | |
3348 | } | |
3349 | ||
3350 | /* Encoding: 'q':8,'M':8,count:16,done:8,argthreadid:64,(threadid:64)* */ | |
3351 | ||
6b8edb51 PA |
3352 | int |
3353 | remote_target::parse_threadlist_response (char *pkt, int result_limit, | |
3354 | threadref *original_echo, | |
3355 | threadref *resultlist, | |
3356 | int *doneflag) | |
c906108c | 3357 | { |
d01949b6 | 3358 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3359 | char *limit; |
3360 | int count, resultcount, done; | |
3361 | ||
3362 | resultcount = 0; | |
3363 | /* Assume the 'q' and 'M chars have been stripped. */ | |
8d64371b | 3364 | limit = pkt + (rs->buf.size () - BUF_THREAD_ID_SIZE); |
23860348 | 3365 | /* done parse past here */ |
c906108c SS |
3366 | pkt = unpack_byte (pkt, &count); /* count field */ |
3367 | pkt = unpack_nibble (pkt, &done); | |
3368 | /* The first threadid is the argument threadid. */ | |
3369 | pkt = unpack_threadid (pkt, original_echo); /* should match query packet */ | |
3370 | while ((count-- > 0) && (pkt < limit)) | |
3371 | { | |
3372 | pkt = unpack_threadid (pkt, resultlist++); | |
3373 | if (resultcount++ >= result_limit) | |
3374 | break; | |
3375 | } | |
3376 | if (doneflag) | |
3377 | *doneflag = done; | |
3378 | return resultcount; | |
3379 | } | |
3380 | ||
6dc54d91 PA |
3381 | /* Fetch the next batch of threads from the remote. Returns -1 if the |
3382 | qL packet is not supported, 0 on error and 1 on success. */ | |
3383 | ||
6b8edb51 PA |
3384 | int |
3385 | remote_target::remote_get_threadlist (int startflag, threadref *nextthread, | |
3386 | int result_limit, int *done, int *result_count, | |
3387 | threadref *threadlist) | |
c906108c | 3388 | { |
d01949b6 | 3389 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3390 | int result = 1; |
3391 | ||
23860348 | 3392 | /* Trancate result limit to be smaller than the packet size. */ |
3e43a32a MS |
3393 | if ((((result_limit + 1) * BUF_THREAD_ID_SIZE) + 10) |
3394 | >= get_remote_packet_size ()) | |
ea9c271d | 3395 | result_limit = (get_remote_packet_size () / BUF_THREAD_ID_SIZE) - 2; |
c906108c | 3396 | |
8d64371b TT |
3397 | pack_threadlist_request (rs->buf.data (), startflag, result_limit, |
3398 | nextthread); | |
6d820c5c | 3399 | putpkt (rs->buf); |
8d64371b TT |
3400 | getpkt (&rs->buf, 0); |
3401 | if (rs->buf[0] == '\0') | |
6dc54d91 PA |
3402 | { |
3403 | /* Packet not supported. */ | |
3404 | return -1; | |
3405 | } | |
3406 | ||
3407 | *result_count = | |
8d64371b | 3408 | parse_threadlist_response (&rs->buf[2], result_limit, |
6dc54d91 | 3409 | &rs->echo_nextthread, threadlist, done); |
c906108c | 3410 | |
0d031856 | 3411 | if (!threadmatch (&rs->echo_nextthread, nextthread)) |
c906108c | 3412 | { |
23860348 MS |
3413 | /* FIXME: This is a good reason to drop the packet. */ |
3414 | /* Possably, there is a duplicate response. */ | |
c906108c SS |
3415 | /* Possabilities : |
3416 | retransmit immediatly - race conditions | |
3417 | retransmit after timeout - yes | |
3418 | exit | |
3419 | wait for packet, then exit | |
3420 | */ | |
8a3fe4f8 | 3421 | warning (_("HMM: threadlist did not echo arg thread, dropping it.")); |
23860348 | 3422 | return 0; /* I choose simply exiting. */ |
c906108c SS |
3423 | } |
3424 | if (*result_count <= 0) | |
3425 | { | |
3426 | if (*done != 1) | |
3427 | { | |
8a3fe4f8 | 3428 | warning (_("RMT ERROR : failed to get remote thread list.")); |
c906108c SS |
3429 | result = 0; |
3430 | } | |
3431 | return result; /* break; */ | |
3432 | } | |
3433 | if (*result_count > result_limit) | |
3434 | { | |
3435 | *result_count = 0; | |
8a3fe4f8 | 3436 | warning (_("RMT ERROR: threadlist response longer than requested.")); |
c906108c SS |
3437 | return 0; |
3438 | } | |
3439 | return result; | |
3440 | } | |
3441 | ||
6dc54d91 PA |
3442 | /* Fetch the list of remote threads, with the qL packet, and call |
3443 | STEPFUNCTION for each thread found. Stops iterating and returns 1 | |
3444 | if STEPFUNCTION returns true. Stops iterating and returns 0 if the | |
3445 | STEPFUNCTION returns false. If the packet is not supported, | |
3446 | returns -1. */ | |
c906108c | 3447 | |
6b8edb51 PA |
3448 | int |
3449 | remote_target::remote_threadlist_iterator (rmt_thread_action stepfunction, | |
3450 | void *context, int looplimit) | |
c906108c | 3451 | { |
0d031856 | 3452 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3453 | int done, i, result_count; |
3454 | int startflag = 1; | |
3455 | int result = 1; | |
3456 | int loopcount = 0; | |
c906108c SS |
3457 | |
3458 | done = 0; | |
3459 | while (!done) | |
3460 | { | |
3461 | if (loopcount++ > looplimit) | |
3462 | { | |
3463 | result = 0; | |
8a3fe4f8 | 3464 | warning (_("Remote fetch threadlist -infinite loop-.")); |
c906108c SS |
3465 | break; |
3466 | } | |
6dc54d91 PA |
3467 | result = remote_get_threadlist (startflag, &rs->nextthread, |
3468 | MAXTHREADLISTRESULTS, | |
3469 | &done, &result_count, | |
3470 | rs->resultthreadlist); | |
3471 | if (result <= 0) | |
3472 | break; | |
23860348 | 3473 | /* Clear for later iterations. */ |
c906108c SS |
3474 | startflag = 0; |
3475 | /* Setup to resume next batch of thread references, set nextthread. */ | |
3476 | if (result_count >= 1) | |
0d031856 TT |
3477 | copy_threadref (&rs->nextthread, |
3478 | &rs->resultthreadlist[result_count - 1]); | |
c906108c SS |
3479 | i = 0; |
3480 | while (result_count--) | |
6dc54d91 PA |
3481 | { |
3482 | if (!(*stepfunction) (&rs->resultthreadlist[i++], context)) | |
3483 | { | |
3484 | result = 0; | |
3485 | break; | |
3486 | } | |
3487 | } | |
c906108c SS |
3488 | } |
3489 | return result; | |
3490 | } | |
3491 | ||
6dc54d91 PA |
3492 | /* A thread found on the remote target. */ |
3493 | ||
21fe1c75 | 3494 | struct thread_item |
6dc54d91 | 3495 | { |
21fe1c75 SM |
3496 | explicit thread_item (ptid_t ptid_) |
3497 | : ptid (ptid_) | |
3498 | {} | |
3499 | ||
3500 | thread_item (thread_item &&other) = default; | |
3501 | thread_item &operator= (thread_item &&other) = default; | |
3502 | ||
3503 | DISABLE_COPY_AND_ASSIGN (thread_item); | |
3504 | ||
6dc54d91 PA |
3505 | /* The thread's PTID. */ |
3506 | ptid_t ptid; | |
3507 | ||
21fe1c75 SM |
3508 | /* The thread's extra info. */ |
3509 | std::string extra; | |
6dc54d91 | 3510 | |
21fe1c75 SM |
3511 | /* The thread's name. */ |
3512 | std::string name; | |
79efa585 | 3513 | |
6dc54d91 | 3514 | /* The core the thread was running on. -1 if not known. */ |
21fe1c75 | 3515 | int core = -1; |
f6327dcb KB |
3516 | |
3517 | /* The thread handle associated with the thread. */ | |
21fe1c75 | 3518 | gdb::byte_vector thread_handle; |
21fe1c75 | 3519 | }; |
6dc54d91 PA |
3520 | |
3521 | /* Context passed around to the various methods listing remote | |
3522 | threads. As new threads are found, they're added to the ITEMS | |
3523 | vector. */ | |
3524 | ||
3525 | struct threads_listing_context | |
3526 | { | |
21fe1c75 SM |
3527 | /* Return true if this object contains an entry for a thread with ptid |
3528 | PTID. */ | |
6dc54d91 | 3529 | |
21fe1c75 SM |
3530 | bool contains_thread (ptid_t ptid) const |
3531 | { | |
3532 | auto match_ptid = [&] (const thread_item &item) | |
3533 | { | |
3534 | return item.ptid == ptid; | |
3535 | }; | |
80134cf5 | 3536 | |
21fe1c75 SM |
3537 | auto it = std::find_if (this->items.begin (), |
3538 | this->items.end (), | |
3539 | match_ptid); | |
80134cf5 | 3540 | |
21fe1c75 SM |
3541 | return it != this->items.end (); |
3542 | } | |
80134cf5 | 3543 | |
21fe1c75 | 3544 | /* Remove the thread with ptid PTID. */ |
80134cf5 | 3545 | |
21fe1c75 SM |
3546 | void remove_thread (ptid_t ptid) |
3547 | { | |
3548 | auto match_ptid = [&] (const thread_item &item) | |
3549 | { | |
3550 | return item.ptid == ptid; | |
3551 | }; | |
cbb8991c | 3552 | |
21fe1c75 SM |
3553 | auto it = std::remove_if (this->items.begin (), |
3554 | this->items.end (), | |
3555 | match_ptid); | |
cbb8991c | 3556 | |
21fe1c75 SM |
3557 | if (it != this->items.end ()) |
3558 | this->items.erase (it); | |
3559 | } | |
3560 | ||
3561 | /* The threads found on the remote target. */ | |
3562 | std::vector<thread_item> items; | |
3563 | }; | |
cbb8991c | 3564 | |
c906108c | 3565 | static int |
6dc54d91 | 3566 | remote_newthread_step (threadref *ref, void *data) |
c906108c | 3567 | { |
19ba03f4 SM |
3568 | struct threads_listing_context *context |
3569 | = (struct threads_listing_context *) data; | |
21fe1c75 SM |
3570 | int pid = inferior_ptid.pid (); |
3571 | int lwp = threadref_to_int (ref); | |
3572 | ptid_t ptid (pid, lwp); | |
6dc54d91 | 3573 | |
21fe1c75 | 3574 | context->items.emplace_back (ptid); |
6dc54d91 | 3575 | |
c906108c SS |
3576 | return 1; /* continue iterator */ |
3577 | } | |
3578 | ||
3579 | #define CRAZY_MAX_THREADS 1000 | |
3580 | ||
6b8edb51 PA |
3581 | ptid_t |
3582 | remote_target::remote_current_thread (ptid_t oldpid) | |
c906108c | 3583 | { |
d01949b6 | 3584 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3585 | |
3586 | putpkt ("qC"); | |
8d64371b | 3587 | getpkt (&rs->buf, 0); |
2e9f7625 | 3588 | if (rs->buf[0] == 'Q' && rs->buf[1] == 'C') |
c9f35b34 | 3589 | { |
256642e8 | 3590 | const char *obuf; |
c9f35b34 KB |
3591 | ptid_t result; |
3592 | ||
3593 | result = read_ptid (&rs->buf[2], &obuf); | |
3594 | if (*obuf != '\0' && remote_debug) | |
3595 | fprintf_unfiltered (gdb_stdlog, | |
3596 | "warning: garbage in qC reply\n"); | |
3597 | ||
3598 | return result; | |
3599 | } | |
c906108c SS |
3600 | else |
3601 | return oldpid; | |
3602 | } | |
3603 | ||
6dc54d91 | 3604 | /* List remote threads using the deprecated qL packet. */ |
cce74817 | 3605 | |
6b8edb51 PA |
3606 | int |
3607 | remote_target::remote_get_threads_with_ql (threads_listing_context *context) | |
c906108c | 3608 | { |
6dc54d91 PA |
3609 | if (remote_threadlist_iterator (remote_newthread_step, context, |
3610 | CRAZY_MAX_THREADS) >= 0) | |
3611 | return 1; | |
3612 | ||
3613 | return 0; | |
c906108c SS |
3614 | } |
3615 | ||
dc146f7c VP |
3616 | #if defined(HAVE_LIBEXPAT) |
3617 | ||
dc146f7c VP |
3618 | static void |
3619 | start_thread (struct gdb_xml_parser *parser, | |
3620 | const struct gdb_xml_element *element, | |
4d0fdd9b SM |
3621 | void *user_data, |
3622 | std::vector<gdb_xml_value> &attributes) | |
dc146f7c | 3623 | { |
19ba03f4 SM |
3624 | struct threads_listing_context *data |
3625 | = (struct threads_listing_context *) user_data; | |
3d2c1d41 | 3626 | struct gdb_xml_value *attr; |
dc146f7c | 3627 | |
4d0fdd9b | 3628 | char *id = (char *) xml_find_attribute (attributes, "id")->value.get (); |
21fe1c75 SM |
3629 | ptid_t ptid = read_ptid (id, NULL); |
3630 | ||
3631 | data->items.emplace_back (ptid); | |
3632 | thread_item &item = data->items.back (); | |
dc146f7c | 3633 | |
3d2c1d41 PA |
3634 | attr = xml_find_attribute (attributes, "core"); |
3635 | if (attr != NULL) | |
4d0fdd9b | 3636 | item.core = *(ULONGEST *) attr->value.get (); |
dc146f7c | 3637 | |
79efa585 | 3638 | attr = xml_find_attribute (attributes, "name"); |
21fe1c75 | 3639 | if (attr != NULL) |
4d0fdd9b | 3640 | item.name = (const char *) attr->value.get (); |
79efa585 | 3641 | |
f6327dcb KB |
3642 | attr = xml_find_attribute (attributes, "handle"); |
3643 | if (attr != NULL) | |
4d0fdd9b | 3644 | item.thread_handle = hex2bin ((const char *) attr->value.get ()); |
dc146f7c VP |
3645 | } |
3646 | ||
3647 | static void | |
3648 | end_thread (struct gdb_xml_parser *parser, | |
3649 | const struct gdb_xml_element *element, | |
3650 | void *user_data, const char *body_text) | |
3651 | { | |
19ba03f4 SM |
3652 | struct threads_listing_context *data |
3653 | = (struct threads_listing_context *) user_data; | |
dc146f7c | 3654 | |
21fe1c75 SM |
3655 | if (body_text != NULL && *body_text != '\0') |
3656 | data->items.back ().extra = body_text; | |
dc146f7c VP |
3657 | } |
3658 | ||
3659 | const struct gdb_xml_attribute thread_attributes[] = { | |
3660 | { "id", GDB_XML_AF_NONE, NULL, NULL }, | |
3661 | { "core", GDB_XML_AF_OPTIONAL, gdb_xml_parse_attr_ulongest, NULL }, | |
79efa585 | 3662 | { "name", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
f6327dcb | 3663 | { "handle", GDB_XML_AF_OPTIONAL, NULL, NULL }, |
dc146f7c VP |
3664 | { NULL, GDB_XML_AF_NONE, NULL, NULL } |
3665 | }; | |
3666 | ||
3667 | const struct gdb_xml_element thread_children[] = { | |
3668 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3669 | }; | |
3670 | ||
3671 | const struct gdb_xml_element threads_children[] = { | |
3672 | { "thread", thread_attributes, thread_children, | |
3673 | GDB_XML_EF_REPEATABLE | GDB_XML_EF_OPTIONAL, | |
3674 | start_thread, end_thread }, | |
3675 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3676 | }; | |
3677 | ||
3678 | const struct gdb_xml_element threads_elements[] = { | |
3679 | { "threads", NULL, threads_children, | |
3680 | GDB_XML_EF_NONE, NULL, NULL }, | |
3681 | { NULL, NULL, NULL, GDB_XML_EF_NONE, NULL, NULL } | |
3682 | }; | |
3683 | ||
3684 | #endif | |
3685 | ||
6dc54d91 | 3686 | /* List remote threads using qXfer:threads:read. */ |
9d1f7ab2 | 3687 | |
6b8edb51 PA |
3688 | int |
3689 | remote_target::remote_get_threads_with_qxfer (threads_listing_context *context) | |
0f71a2f6 | 3690 | { |
dc146f7c | 3691 | #if defined(HAVE_LIBEXPAT) |
4082afcc | 3692 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3693 | { |
9018be22 | 3694 | gdb::optional<gdb::char_vector> xml |
6b8edb51 | 3695 | = target_read_stralloc (this, TARGET_OBJECT_THREADS, NULL); |
efc0eabd | 3696 | |
9018be22 | 3697 | if (xml && (*xml)[0] != '\0') |
dc146f7c | 3698 | { |
6dc54d91 | 3699 | gdb_xml_parse_quick (_("threads"), "threads.dtd", |
9018be22 | 3700 | threads_elements, xml->data (), context); |
dc146f7c VP |
3701 | } |
3702 | ||
6dc54d91 | 3703 | return 1; |
dc146f7c VP |
3704 | } |
3705 | #endif | |
3706 | ||
6dc54d91 PA |
3707 | return 0; |
3708 | } | |
3709 | ||
3710 | /* List remote threads using qfThreadInfo/qsThreadInfo. */ | |
3711 | ||
6b8edb51 PA |
3712 | int |
3713 | remote_target::remote_get_threads_with_qthreadinfo (threads_listing_context *context) | |
6dc54d91 PA |
3714 | { |
3715 | struct remote_state *rs = get_remote_state (); | |
3716 | ||
b80fafe3 | 3717 | if (rs->use_threadinfo_query) |
9d1f7ab2 | 3718 | { |
256642e8 | 3719 | const char *bufp; |
6dc54d91 | 3720 | |
9d1f7ab2 | 3721 | putpkt ("qfThreadInfo"); |
8d64371b TT |
3722 | getpkt (&rs->buf, 0); |
3723 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3724 | if (bufp[0] != '\0') /* q packet recognized */ |
802188a7 | 3725 | { |
9d1f7ab2 MS |
3726 | while (*bufp++ == 'm') /* reply contains one or more TID */ |
3727 | { | |
3728 | do | |
3729 | { | |
21fe1c75 SM |
3730 | ptid_t ptid = read_ptid (bufp, &bufp); |
3731 | context->items.emplace_back (ptid); | |
9d1f7ab2 MS |
3732 | } |
3733 | while (*bufp++ == ','); /* comma-separated list */ | |
3734 | putpkt ("qsThreadInfo"); | |
8d64371b TT |
3735 | getpkt (&rs->buf, 0); |
3736 | bufp = rs->buf.data (); | |
9d1f7ab2 | 3737 | } |
6dc54d91 PA |
3738 | return 1; |
3739 | } | |
3740 | else | |
3741 | { | |
3742 | /* Packet not recognized. */ | |
3743 | rs->use_threadinfo_query = 0; | |
9d1f7ab2 MS |
3744 | } |
3745 | } | |
3746 | ||
6dc54d91 PA |
3747 | return 0; |
3748 | } | |
3749 | ||
e8032dde | 3750 | /* Implement the to_update_thread_list function for the remote |
6dc54d91 PA |
3751 | targets. */ |
3752 | ||
f6ac5f3d PA |
3753 | void |
3754 | remote_target::update_thread_list () | |
6dc54d91 | 3755 | { |
6dc54d91 | 3756 | struct threads_listing_context context; |
ab970af1 | 3757 | int got_list = 0; |
e8032dde | 3758 | |
6dc54d91 PA |
3759 | /* We have a few different mechanisms to fetch the thread list. Try |
3760 | them all, starting with the most preferred one first, falling | |
3761 | back to older methods. */ | |
6b8edb51 PA |
3762 | if (remote_get_threads_with_qxfer (&context) |
3763 | || remote_get_threads_with_qthreadinfo (&context) | |
3764 | || remote_get_threads_with_ql (&context)) | |
6dc54d91 | 3765 | { |
ab970af1 PA |
3766 | got_list = 1; |
3767 | ||
21fe1c75 | 3768 | if (context.items.empty () |
f6ac5f3d | 3769 | && remote_thread_always_alive (inferior_ptid)) |
7d1a114c PA |
3770 | { |
3771 | /* Some targets don't really support threads, but still | |
3772 | reply an (empty) thread list in response to the thread | |
3773 | listing packets, instead of replying "packet not | |
3774 | supported". Exit early so we don't delete the main | |
3775 | thread. */ | |
7d1a114c PA |
3776 | return; |
3777 | } | |
3778 | ||
ab970af1 PA |
3779 | /* CONTEXT now holds the current thread list on the remote |
3780 | target end. Delete GDB-side threads no longer found on the | |
3781 | target. */ | |
08036331 | 3782 | for (thread_info *tp : all_threads_safe ()) |
cbb8991c | 3783 | { |
21fe1c75 | 3784 | if (!context.contains_thread (tp->ptid)) |
ab970af1 PA |
3785 | { |
3786 | /* Not found. */ | |
00431a78 | 3787 | delete_thread (tp); |
ab970af1 | 3788 | } |
cbb8991c DB |
3789 | } |
3790 | ||
3791 | /* Remove any unreported fork child threads from CONTEXT so | |
3792 | that we don't interfere with follow fork, which is where | |
3793 | creation of such threads is handled. */ | |
3794 | remove_new_fork_children (&context); | |
74531fed | 3795 | |
ab970af1 | 3796 | /* And now add threads we don't know about yet to our list. */ |
21fe1c75 | 3797 | for (thread_item &item : context.items) |
6dc54d91 | 3798 | { |
21fe1c75 | 3799 | if (item.ptid != null_ptid) |
6dc54d91 | 3800 | { |
6dc54d91 | 3801 | /* In non-stop mode, we assume new found threads are |
0d5b594f PA |
3802 | executing until proven otherwise with a stop reply. |
3803 | In all-stop, we can only get here if all threads are | |
6dc54d91 | 3804 | stopped. */ |
0d5b594f | 3805 | int executing = target_is_non_stop_p () ? 1 : 0; |
6dc54d91 | 3806 | |
21fe1c75 | 3807 | remote_notice_new_inferior (item.ptid, executing); |
6dc54d91 | 3808 | |
08036331 | 3809 | thread_info *tp = find_thread_ptid (item.ptid); |
00431a78 | 3810 | remote_thread_info *info = get_remote_thread_info (tp); |
21fe1c75 | 3811 | info->core = item.core; |
7aabaf9d SM |
3812 | info->extra = std::move (item.extra); |
3813 | info->name = std::move (item.name); | |
3814 | info->thread_handle = std::move (item.thread_handle); | |
6dc54d91 PA |
3815 | } |
3816 | } | |
3817 | } | |
3818 | ||
ab970af1 PA |
3819 | if (!got_list) |
3820 | { | |
3821 | /* If no thread listing method is supported, then query whether | |
3822 | each known thread is alive, one by one, with the T packet. | |
3823 | If the target doesn't support threads at all, then this is a | |
3824 | no-op. See remote_thread_alive. */ | |
3825 | prune_threads (); | |
3826 | } | |
9d1f7ab2 MS |
3827 | } |
3828 | ||
802188a7 | 3829 | /* |
9d1f7ab2 MS |
3830 | * Collect a descriptive string about the given thread. |
3831 | * The target may say anything it wants to about the thread | |
3832 | * (typically info about its blocked / runnable state, name, etc.). | |
3833 | * This string will appear in the info threads display. | |
802188a7 | 3834 | * |
9d1f7ab2 MS |
3835 | * Optional: targets are not required to implement this function. |
3836 | */ | |
3837 | ||
f6ac5f3d PA |
3838 | const char * |
3839 | remote_target::extra_thread_info (thread_info *tp) | |
9d1f7ab2 | 3840 | { |
d01949b6 | 3841 | struct remote_state *rs = get_remote_state (); |
9d1f7ab2 MS |
3842 | int set; |
3843 | threadref id; | |
3844 | struct gdb_ext_thread_info threadinfo; | |
9d1f7ab2 | 3845 | |
5d93a237 | 3846 | if (rs->remote_desc == 0) /* paranoia */ |
8e65ff28 | 3847 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3848 | _("remote_threads_extra_info")); |
9d1f7ab2 | 3849 | |
d7e15655 | 3850 | if (tp->ptid == magic_null_ptid |
e38504b3 | 3851 | || (tp->ptid.pid () != 0 && tp->ptid.lwp () == 0)) |
60e569b9 PA |
3852 | /* This is the main thread which was added by GDB. The remote |
3853 | server doesn't know about it. */ | |
3854 | return NULL; | |
3855 | ||
c76a8ea3 PA |
3856 | std::string &extra = get_remote_thread_info (tp)->extra; |
3857 | ||
3858 | /* If already have cached info, use it. */ | |
3859 | if (!extra.empty ()) | |
3860 | return extra.c_str (); | |
3861 | ||
4082afcc | 3862 | if (packet_support (PACKET_qXfer_threads) == PACKET_ENABLE) |
dc146f7c | 3863 | { |
c76a8ea3 PA |
3864 | /* If we're using qXfer:threads:read, then the extra info is |
3865 | included in the XML. So if we didn't have anything cached, | |
3866 | it's because there's really no extra info. */ | |
3867 | return NULL; | |
dc146f7c VP |
3868 | } |
3869 | ||
b80fafe3 | 3870 | if (rs->use_threadextra_query) |
9d1f7ab2 | 3871 | { |
8d64371b TT |
3872 | char *b = rs->buf.data (); |
3873 | char *endb = b + get_remote_packet_size (); | |
82f73884 PA |
3874 | |
3875 | xsnprintf (b, endb - b, "qThreadExtraInfo,"); | |
3876 | b += strlen (b); | |
3877 | write_ptid (b, endb, tp->ptid); | |
3878 | ||
2e9f7625 | 3879 | putpkt (rs->buf); |
8d64371b | 3880 | getpkt (&rs->buf, 0); |
2e9f7625 | 3881 | if (rs->buf[0] != 0) |
9d1f7ab2 | 3882 | { |
8d64371b TT |
3883 | extra.resize (strlen (rs->buf.data ()) / 2); |
3884 | hex2bin (rs->buf.data (), (gdb_byte *) &extra[0], extra.size ()); | |
c76a8ea3 | 3885 | return extra.c_str (); |
9d1f7ab2 | 3886 | } |
0f71a2f6 | 3887 | } |
9d1f7ab2 MS |
3888 | |
3889 | /* If the above query fails, fall back to the old method. */ | |
b80fafe3 | 3890 | rs->use_threadextra_query = 0; |
9d1f7ab2 MS |
3891 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME |
3892 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
e38504b3 | 3893 | int_to_threadref (&id, tp->ptid.lwp ()); |
9d1f7ab2 MS |
3894 | if (remote_get_threadinfo (&id, set, &threadinfo)) |
3895 | if (threadinfo.active) | |
0f71a2f6 | 3896 | { |
9d1f7ab2 | 3897 | if (*threadinfo.shortname) |
c76a8ea3 | 3898 | string_appendf (extra, " Name: %s", threadinfo.shortname); |
9d1f7ab2 | 3899 | if (*threadinfo.display) |
c76a8ea3 PA |
3900 | { |
3901 | if (!extra.empty ()) | |
3902 | extra += ','; | |
3903 | string_appendf (extra, " State: %s", threadinfo.display); | |
3904 | } | |
9d1f7ab2 | 3905 | if (*threadinfo.more_display) |
c5aa993b | 3906 | { |
c76a8ea3 PA |
3907 | if (!extra.empty ()) |
3908 | extra += ','; | |
3909 | string_appendf (extra, " Priority: %s", threadinfo.more_display); | |
c5aa993b | 3910 | } |
c76a8ea3 | 3911 | return extra.c_str (); |
0f71a2f6 | 3912 | } |
9d1f7ab2 | 3913 | return NULL; |
0f71a2f6 | 3914 | } |
c906108c | 3915 | \f |
c5aa993b | 3916 | |
f6ac5f3d PA |
3917 | bool |
3918 | remote_target::static_tracepoint_marker_at (CORE_ADDR addr, | |
3919 | struct static_tracepoint_marker *marker) | |
0fb4aa4b PA |
3920 | { |
3921 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 3922 | char *p = rs->buf.data (); |
0fb4aa4b | 3923 | |
bba74b36 | 3924 | xsnprintf (p, get_remote_packet_size (), "qTSTMat:"); |
0fb4aa4b PA |
3925 | p += strlen (p); |
3926 | p += hexnumstr (p, addr); | |
3927 | putpkt (rs->buf); | |
8d64371b TT |
3928 | getpkt (&rs->buf, 0); |
3929 | p = rs->buf.data (); | |
0fb4aa4b PA |
3930 | |
3931 | if (*p == 'E') | |
3932 | error (_("Remote failure reply: %s"), p); | |
3933 | ||
3934 | if (*p++ == 'm') | |
3935 | { | |
256642e8 | 3936 | parse_static_tracepoint_marker_definition (p, NULL, marker); |
5d9310c4 | 3937 | return true; |
0fb4aa4b PA |
3938 | } |
3939 | ||
5d9310c4 | 3940 | return false; |
0fb4aa4b PA |
3941 | } |
3942 | ||
f6ac5f3d PA |
3943 | std::vector<static_tracepoint_marker> |
3944 | remote_target::static_tracepoint_markers_by_strid (const char *strid) | |
0fb4aa4b PA |
3945 | { |
3946 | struct remote_state *rs = get_remote_state (); | |
5d9310c4 | 3947 | std::vector<static_tracepoint_marker> markers; |
256642e8 | 3948 | const char *p; |
5d9310c4 | 3949 | static_tracepoint_marker marker; |
0fb4aa4b PA |
3950 | |
3951 | /* Ask for a first packet of static tracepoint marker | |
3952 | definition. */ | |
3953 | putpkt ("qTfSTM"); | |
8d64371b TT |
3954 | getpkt (&rs->buf, 0); |
3955 | p = rs->buf.data (); | |
0fb4aa4b PA |
3956 | if (*p == 'E') |
3957 | error (_("Remote failure reply: %s"), p); | |
3958 | ||
0fb4aa4b PA |
3959 | while (*p++ == 'm') |
3960 | { | |
0fb4aa4b PA |
3961 | do |
3962 | { | |
5d9310c4 | 3963 | parse_static_tracepoint_marker_definition (p, &p, &marker); |
0fb4aa4b | 3964 | |
5d9310c4 SM |
3965 | if (strid == NULL || marker.str_id == strid) |
3966 | markers.push_back (std::move (marker)); | |
0fb4aa4b PA |
3967 | } |
3968 | while (*p++ == ','); /* comma-separated list */ | |
3969 | /* Ask for another packet of static tracepoint definition. */ | |
3970 | putpkt ("qTsSTM"); | |
8d64371b TT |
3971 | getpkt (&rs->buf, 0); |
3972 | p = rs->buf.data (); | |
0fb4aa4b PA |
3973 | } |
3974 | ||
0fb4aa4b PA |
3975 | return markers; |
3976 | } | |
3977 | ||
3978 | \f | |
10760264 JB |
3979 | /* Implement the to_get_ada_task_ptid function for the remote targets. */ |
3980 | ||
f6ac5f3d PA |
3981 | ptid_t |
3982 | remote_target::get_ada_task_ptid (long lwp, long thread) | |
10760264 | 3983 | { |
e99b03dc | 3984 | return ptid_t (inferior_ptid.pid (), lwp, 0); |
10760264 JB |
3985 | } |
3986 | \f | |
3987 | ||
24b06219 | 3988 | /* Restart the remote side; this is an extended protocol operation. */ |
c906108c | 3989 | |
6b8edb51 PA |
3990 | void |
3991 | remote_target::extended_remote_restart () | |
c906108c | 3992 | { |
d01949b6 | 3993 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
3994 | |
3995 | /* Send the restart command; for reasons I don't understand the | |
3996 | remote side really expects a number after the "R". */ | |
8d64371b | 3997 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "R%x", 0); |
6d820c5c | 3998 | putpkt (rs->buf); |
c906108c | 3999 | |
ad9a8f3f | 4000 | remote_fileio_reset (); |
c906108c SS |
4001 | } |
4002 | \f | |
4003 | /* Clean up connection to a remote debugger. */ | |
4004 | ||
f6ac5f3d PA |
4005 | void |
4006 | remote_target::close () | |
c906108c | 4007 | { |
048094ac | 4008 | /* Make sure we leave stdin registered in the event loop. */ |
f6ac5f3d | 4009 | terminal_ours (); |
ce5ce7ed | 4010 | |
ce5ce7ed | 4011 | /* We don't have a connection to the remote stub anymore. Get rid |
f67fd822 PM |
4012 | of all the inferiors and their threads we were controlling. |
4013 | Reset inferior_ptid to null_ptid first, as otherwise has_stack_frame | |
4014 | will be unable to find the thread corresponding to (pid, 0, 0). */ | |
0f2caa1b | 4015 | inferior_ptid = null_ptid; |
f67fd822 | 4016 | discard_all_inferiors (); |
ce5ce7ed | 4017 | |
6b8edb51 PA |
4018 | trace_reset_local_state (); |
4019 | ||
4020 | delete this; | |
4021 | } | |
4022 | ||
4023 | remote_target::~remote_target () | |
4024 | { | |
4025 | struct remote_state *rs = get_remote_state (); | |
4026 | ||
4027 | /* Check for NULL because we may get here with a partially | |
4028 | constructed target/connection. */ | |
4029 | if (rs->remote_desc == nullptr) | |
4030 | return; | |
4031 | ||
4032 | serial_close (rs->remote_desc); | |
4033 | ||
4034 | /* We are destroying the remote target, so we should discard | |
f48ff2a7 | 4035 | everything of this target. */ |
6b8edb51 | 4036 | discard_pending_stop_replies_in_queue (); |
74531fed | 4037 | |
6b8edb51 PA |
4038 | if (rs->remote_async_inferior_event_token) |
4039 | delete_async_event_handler (&rs->remote_async_inferior_event_token); | |
722247f1 | 4040 | |
97dfbadd | 4041 | delete rs->notif_state; |
c906108c SS |
4042 | } |
4043 | ||
23860348 | 4044 | /* Query the remote side for the text, data and bss offsets. */ |
c906108c | 4045 | |
6b8edb51 PA |
4046 | void |
4047 | remote_target::get_offsets () | |
c906108c | 4048 | { |
d01949b6 | 4049 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 4050 | char *buf; |
085dd6e6 | 4051 | char *ptr; |
31d99776 DJ |
4052 | int lose, num_segments = 0, do_sections, do_segments; |
4053 | CORE_ADDR text_addr, data_addr, bss_addr, segments[2]; | |
c906108c | 4054 | struct section_offsets *offs; |
31d99776 DJ |
4055 | struct symfile_segment_data *data; |
4056 | ||
4057 | if (symfile_objfile == NULL) | |
4058 | return; | |
c906108c SS |
4059 | |
4060 | putpkt ("qOffsets"); | |
8d64371b TT |
4061 | getpkt (&rs->buf, 0); |
4062 | buf = rs->buf.data (); | |
c906108c SS |
4063 | |
4064 | if (buf[0] == '\000') | |
4065 | return; /* Return silently. Stub doesn't support | |
23860348 | 4066 | this command. */ |
c906108c SS |
4067 | if (buf[0] == 'E') |
4068 | { | |
8a3fe4f8 | 4069 | warning (_("Remote failure reply: %s"), buf); |
c906108c SS |
4070 | return; |
4071 | } | |
4072 | ||
4073 | /* Pick up each field in turn. This used to be done with scanf, but | |
4074 | scanf will make trouble if CORE_ADDR size doesn't match | |
4075 | conversion directives correctly. The following code will work | |
4076 | with any size of CORE_ADDR. */ | |
4077 | text_addr = data_addr = bss_addr = 0; | |
4078 | ptr = buf; | |
4079 | lose = 0; | |
4080 | ||
61012eef | 4081 | if (startswith (ptr, "Text=")) |
c906108c SS |
4082 | { |
4083 | ptr += 5; | |
4084 | /* Don't use strtol, could lose on big values. */ | |
4085 | while (*ptr && *ptr != ';') | |
4086 | text_addr = (text_addr << 4) + fromhex (*ptr++); | |
c906108c | 4087 | |
61012eef | 4088 | if (startswith (ptr, ";Data=")) |
31d99776 DJ |
4089 | { |
4090 | ptr += 6; | |
4091 | while (*ptr && *ptr != ';') | |
4092 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4093 | } | |
4094 | else | |
4095 | lose = 1; | |
4096 | ||
61012eef | 4097 | if (!lose && startswith (ptr, ";Bss=")) |
31d99776 DJ |
4098 | { |
4099 | ptr += 5; | |
4100 | while (*ptr && *ptr != ';') | |
4101 | bss_addr = (bss_addr << 4) + fromhex (*ptr++); | |
c906108c | 4102 | |
31d99776 DJ |
4103 | if (bss_addr != data_addr) |
4104 | warning (_("Target reported unsupported offsets: %s"), buf); | |
4105 | } | |
4106 | else | |
4107 | lose = 1; | |
4108 | } | |
61012eef | 4109 | else if (startswith (ptr, "TextSeg=")) |
c906108c | 4110 | { |
31d99776 DJ |
4111 | ptr += 8; |
4112 | /* Don't use strtol, could lose on big values. */ | |
c906108c | 4113 | while (*ptr && *ptr != ';') |
31d99776 DJ |
4114 | text_addr = (text_addr << 4) + fromhex (*ptr++); |
4115 | num_segments = 1; | |
4116 | ||
61012eef | 4117 | if (startswith (ptr, ";DataSeg=")) |
31d99776 DJ |
4118 | { |
4119 | ptr += 9; | |
4120 | while (*ptr && *ptr != ';') | |
4121 | data_addr = (data_addr << 4) + fromhex (*ptr++); | |
4122 | num_segments++; | |
4123 | } | |
c906108c SS |
4124 | } |
4125 | else | |
4126 | lose = 1; | |
4127 | ||
4128 | if (lose) | |
8a3fe4f8 | 4129 | error (_("Malformed response to offset query, %s"), buf); |
31d99776 DJ |
4130 | else if (*ptr != '\0') |
4131 | warning (_("Target reported unsupported offsets: %s"), buf); | |
c906108c | 4132 | |
802188a7 | 4133 | offs = ((struct section_offsets *) |
a39a16c4 | 4134 | alloca (SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections))); |
802188a7 | 4135 | memcpy (offs, symfile_objfile->section_offsets, |
a39a16c4 | 4136 | SIZEOF_N_SECTION_OFFSETS (symfile_objfile->num_sections)); |
c906108c | 4137 | |
31d99776 DJ |
4138 | data = get_symfile_segment_data (symfile_objfile->obfd); |
4139 | do_segments = (data != NULL); | |
4140 | do_sections = num_segments == 0; | |
c906108c | 4141 | |
28c32713 | 4142 | if (num_segments > 0) |
31d99776 | 4143 | { |
31d99776 DJ |
4144 | segments[0] = text_addr; |
4145 | segments[1] = data_addr; | |
4146 | } | |
28c32713 JB |
4147 | /* If we have two segments, we can still try to relocate everything |
4148 | by assuming that the .text and .data offsets apply to the whole | |
4149 | text and data segments. Convert the offsets given in the packet | |
4150 | to base addresses for symfile_map_offsets_to_segments. */ | |
4151 | else if (data && data->num_segments == 2) | |
4152 | { | |
4153 | segments[0] = data->segment_bases[0] + text_addr; | |
4154 | segments[1] = data->segment_bases[1] + data_addr; | |
4155 | num_segments = 2; | |
4156 | } | |
8d385431 DJ |
4157 | /* If the object file has only one segment, assume that it is text |
4158 | rather than data; main programs with no writable data are rare, | |
4159 | but programs with no code are useless. Of course the code might | |
4160 | have ended up in the data segment... to detect that we would need | |
4161 | the permissions here. */ | |
4162 | else if (data && data->num_segments == 1) | |
4163 | { | |
4164 | segments[0] = data->segment_bases[0] + text_addr; | |
4165 | num_segments = 1; | |
4166 | } | |
28c32713 JB |
4167 | /* There's no way to relocate by segment. */ |
4168 | else | |
4169 | do_segments = 0; | |
31d99776 DJ |
4170 | |
4171 | if (do_segments) | |
4172 | { | |
4173 | int ret = symfile_map_offsets_to_segments (symfile_objfile->obfd, data, | |
4174 | offs, num_segments, segments); | |
4175 | ||
4176 | if (ret == 0 && !do_sections) | |
3e43a32a MS |
4177 | error (_("Can not handle qOffsets TextSeg " |
4178 | "response with this symbol file")); | |
31d99776 DJ |
4179 | |
4180 | if (ret > 0) | |
4181 | do_sections = 0; | |
4182 | } | |
c906108c | 4183 | |
9ef895d6 DJ |
4184 | if (data) |
4185 | free_symfile_segment_data (data); | |
31d99776 DJ |
4186 | |
4187 | if (do_sections) | |
4188 | { | |
4189 | offs->offsets[SECT_OFF_TEXT (symfile_objfile)] = text_addr; | |
4190 | ||
3e43a32a MS |
4191 | /* This is a temporary kludge to force data and bss to use the |
4192 | same offsets because that's what nlmconv does now. The real | |
4193 | solution requires changes to the stub and remote.c that I | |
4194 | don't have time to do right now. */ | |
31d99776 DJ |
4195 | |
4196 | offs->offsets[SECT_OFF_DATA (symfile_objfile)] = data_addr; | |
4197 | offs->offsets[SECT_OFF_BSS (symfile_objfile)] = data_addr; | |
4198 | } | |
c906108c SS |
4199 | |
4200 | objfile_relocate (symfile_objfile, offs); | |
4201 | } | |
4202 | ||
9a7071a8 | 4203 | /* Send interrupt_sequence to remote target. */ |
6b8edb51 PA |
4204 | |
4205 | void | |
4206 | remote_target::send_interrupt_sequence () | |
9a7071a8 | 4207 | { |
5d93a237 TT |
4208 | struct remote_state *rs = get_remote_state (); |
4209 | ||
9a7071a8 | 4210 | if (interrupt_sequence_mode == interrupt_sequence_control_c) |
c33e31fd | 4211 | remote_serial_write ("\x03", 1); |
9a7071a8 | 4212 | else if (interrupt_sequence_mode == interrupt_sequence_break) |
5d93a237 | 4213 | serial_send_break (rs->remote_desc); |
9a7071a8 JB |
4214 | else if (interrupt_sequence_mode == interrupt_sequence_break_g) |
4215 | { | |
5d93a237 | 4216 | serial_send_break (rs->remote_desc); |
c33e31fd | 4217 | remote_serial_write ("g", 1); |
9a7071a8 JB |
4218 | } |
4219 | else | |
4220 | internal_error (__FILE__, __LINE__, | |
4221 | _("Invalid value for interrupt_sequence_mode: %s."), | |
4222 | interrupt_sequence_mode); | |
4223 | } | |
4224 | ||
3405876a PA |
4225 | |
4226 | /* If STOP_REPLY is a T stop reply, look for the "thread" register, | |
4227 | and extract the PTID. Returns NULL_PTID if not found. */ | |
4228 | ||
4229 | static ptid_t | |
4230 | stop_reply_extract_thread (char *stop_reply) | |
4231 | { | |
4232 | if (stop_reply[0] == 'T' && strlen (stop_reply) > 3) | |
4233 | { | |
256642e8 | 4234 | const char *p; |
3405876a PA |
4235 | |
4236 | /* Txx r:val ; r:val (...) */ | |
4237 | p = &stop_reply[3]; | |
4238 | ||
4239 | /* Look for "register" named "thread". */ | |
4240 | while (*p != '\0') | |
4241 | { | |
256642e8 | 4242 | const char *p1; |
3405876a PA |
4243 | |
4244 | p1 = strchr (p, ':'); | |
4245 | if (p1 == NULL) | |
4246 | return null_ptid; | |
4247 | ||
4248 | if (strncmp (p, "thread", p1 - p) == 0) | |
4249 | return read_ptid (++p1, &p); | |
4250 | ||
4251 | p1 = strchr (p, ';'); | |
4252 | if (p1 == NULL) | |
4253 | return null_ptid; | |
4254 | p1++; | |
4255 | ||
4256 | p = p1; | |
4257 | } | |
4258 | } | |
4259 | ||
4260 | return null_ptid; | |
4261 | } | |
4262 | ||
b7ea362b PA |
4263 | /* Determine the remote side's current thread. If we have a stop |
4264 | reply handy (in WAIT_STATUS), maybe it's a T stop reply with a | |
4265 | "thread" register we can extract the current thread from. If not, | |
4266 | ask the remote which is the current thread with qC. The former | |
4267 | method avoids a roundtrip. */ | |
4268 | ||
6b8edb51 PA |
4269 | ptid_t |
4270 | remote_target::get_current_thread (char *wait_status) | |
b7ea362b | 4271 | { |
6a49a997 | 4272 | ptid_t ptid = null_ptid; |
b7ea362b PA |
4273 | |
4274 | /* Note we don't use remote_parse_stop_reply as that makes use of | |
4275 | the target architecture, which we haven't yet fully determined at | |
4276 | this point. */ | |
4277 | if (wait_status != NULL) | |
4278 | ptid = stop_reply_extract_thread (wait_status); | |
d7e15655 | 4279 | if (ptid == null_ptid) |
b7ea362b PA |
4280 | ptid = remote_current_thread (inferior_ptid); |
4281 | ||
4282 | return ptid; | |
4283 | } | |
4284 | ||
49c62f2e PA |
4285 | /* Query the remote target for which is the current thread/process, |
4286 | add it to our tables, and update INFERIOR_PTID. The caller is | |
4287 | responsible for setting the state such that the remote end is ready | |
3405876a PA |
4288 | to return the current thread. |
4289 | ||
4290 | This function is called after handling the '?' or 'vRun' packets, | |
4291 | whose response is a stop reply from which we can also try | |
4292 | extracting the thread. If the target doesn't support the explicit | |
4293 | qC query, we infer the current thread from that stop reply, passed | |
4294 | in in WAIT_STATUS, which may be NULL. */ | |
49c62f2e | 4295 | |
6b8edb51 PA |
4296 | void |
4297 | remote_target::add_current_inferior_and_thread (char *wait_status) | |
49c62f2e PA |
4298 | { |
4299 | struct remote_state *rs = get_remote_state (); | |
9ab8741a | 4300 | bool fake_pid_p = false; |
49c62f2e PA |
4301 | |
4302 | inferior_ptid = null_ptid; | |
4303 | ||
b7ea362b | 4304 | /* Now, if we have thread information, update inferior_ptid. */ |
87215ad1 | 4305 | ptid_t curr_ptid = get_current_thread (wait_status); |
3405876a | 4306 | |
87215ad1 | 4307 | if (curr_ptid != null_ptid) |
49c62f2e PA |
4308 | { |
4309 | if (!remote_multi_process_p (rs)) | |
9ab8741a | 4310 | fake_pid_p = true; |
49c62f2e PA |
4311 | } |
4312 | else | |
4313 | { | |
4314 | /* Without this, some commands which require an active target | |
4315 | (such as kill) won't work. This variable serves (at least) | |
4316 | double duty as both the pid of the target process (if it has | |
4317 | such), and as a flag indicating that a target is active. */ | |
87215ad1 | 4318 | curr_ptid = magic_null_ptid; |
9ab8741a | 4319 | fake_pid_p = true; |
49c62f2e PA |
4320 | } |
4321 | ||
e99b03dc | 4322 | remote_add_inferior (fake_pid_p, curr_ptid.pid (), -1, 1); |
49c62f2e | 4323 | |
87215ad1 SDJ |
4324 | /* Add the main thread and switch to it. Don't try reading |
4325 | registers yet, since we haven't fetched the target description | |
4326 | yet. */ | |
4327 | thread_info *tp = add_thread_silent (curr_ptid); | |
4328 | switch_to_thread_no_regs (tp); | |
49c62f2e PA |
4329 | } |
4330 | ||
6efcd9a8 PA |
4331 | /* Print info about a thread that was found already stopped on |
4332 | connection. */ | |
4333 | ||
4334 | static void | |
4335 | print_one_stopped_thread (struct thread_info *thread) | |
4336 | { | |
4337 | struct target_waitstatus *ws = &thread->suspend.waitstatus; | |
4338 | ||
00431a78 | 4339 | switch_to_thread (thread); |
f2ffa92b | 4340 | thread->suspend.stop_pc = get_frame_pc (get_current_frame ()); |
6efcd9a8 PA |
4341 | set_current_sal_from_frame (get_current_frame ()); |
4342 | ||
4343 | thread->suspend.waitstatus_pending_p = 0; | |
4344 | ||
4345 | if (ws->kind == TARGET_WAITKIND_STOPPED) | |
4346 | { | |
4347 | enum gdb_signal sig = ws->value.sig; | |
4348 | ||
4349 | if (signal_print_state (sig)) | |
76727919 | 4350 | gdb::observers::signal_received.notify (sig); |
6efcd9a8 | 4351 | } |
76727919 | 4352 | gdb::observers::normal_stop.notify (NULL, 1); |
6efcd9a8 PA |
4353 | } |
4354 | ||
221e1a37 PA |
4355 | /* Process all initial stop replies the remote side sent in response |
4356 | to the ? packet. These indicate threads that were already stopped | |
4357 | on initial connection. We mark these threads as stopped and print | |
4358 | their current frame before giving the user the prompt. */ | |
4359 | ||
6b8edb51 PA |
4360 | void |
4361 | remote_target::process_initial_stop_replies (int from_tty) | |
221e1a37 PA |
4362 | { |
4363 | int pending_stop_replies = stop_reply_queue_length (); | |
6efcd9a8 PA |
4364 | struct thread_info *selected = NULL; |
4365 | struct thread_info *lowest_stopped = NULL; | |
4366 | struct thread_info *first = NULL; | |
221e1a37 PA |
4367 | |
4368 | /* Consume the initial pending events. */ | |
4369 | while (pending_stop_replies-- > 0) | |
4370 | { | |
4371 | ptid_t waiton_ptid = minus_one_ptid; | |
4372 | ptid_t event_ptid; | |
4373 | struct target_waitstatus ws; | |
4374 | int ignore_event = 0; | |
4375 | ||
4376 | memset (&ws, 0, sizeof (ws)); | |
4377 | event_ptid = target_wait (waiton_ptid, &ws, TARGET_WNOHANG); | |
4378 | if (remote_debug) | |
4379 | print_target_wait_results (waiton_ptid, event_ptid, &ws); | |
4380 | ||
4381 | switch (ws.kind) | |
4382 | { | |
4383 | case TARGET_WAITKIND_IGNORE: | |
4384 | case TARGET_WAITKIND_NO_RESUMED: | |
4385 | case TARGET_WAITKIND_SIGNALLED: | |
4386 | case TARGET_WAITKIND_EXITED: | |
4387 | /* We shouldn't see these, but if we do, just ignore. */ | |
4388 | if (remote_debug) | |
4389 | fprintf_unfiltered (gdb_stdlog, "remote: event ignored\n"); | |
4390 | ignore_event = 1; | |
4391 | break; | |
4392 | ||
4393 | case TARGET_WAITKIND_EXECD: | |
4394 | xfree (ws.value.execd_pathname); | |
4395 | break; | |
4396 | default: | |
4397 | break; | |
4398 | } | |
4399 | ||
4400 | if (ignore_event) | |
4401 | continue; | |
4402 | ||
b926417a | 4403 | struct thread_info *evthread = find_thread_ptid (event_ptid); |
221e1a37 PA |
4404 | |
4405 | if (ws.kind == TARGET_WAITKIND_STOPPED) | |
4406 | { | |
4407 | enum gdb_signal sig = ws.value.sig; | |
4408 | ||
4409 | /* Stubs traditionally report SIGTRAP as initial signal, | |
4410 | instead of signal 0. Suppress it. */ | |
4411 | if (sig == GDB_SIGNAL_TRAP) | |
4412 | sig = GDB_SIGNAL_0; | |
b926417a | 4413 | evthread->suspend.stop_signal = sig; |
6efcd9a8 PA |
4414 | ws.value.sig = sig; |
4415 | } | |
221e1a37 | 4416 | |
b926417a | 4417 | evthread->suspend.waitstatus = ws; |
6efcd9a8 PA |
4418 | |
4419 | if (ws.kind != TARGET_WAITKIND_STOPPED | |
4420 | || ws.value.sig != GDB_SIGNAL_0) | |
b926417a | 4421 | evthread->suspend.waitstatus_pending_p = 1; |
6efcd9a8 PA |
4422 | |
4423 | set_executing (event_ptid, 0); | |
4424 | set_running (event_ptid, 0); | |
b926417a | 4425 | get_remote_thread_info (evthread)->vcont_resumed = 0; |
6efcd9a8 PA |
4426 | } |
4427 | ||
4428 | /* "Notice" the new inferiors before anything related to | |
4429 | registers/memory. */ | |
08036331 | 4430 | for (inferior *inf : all_non_exited_inferiors ()) |
6efcd9a8 | 4431 | { |
6efcd9a8 PA |
4432 | inf->needs_setup = 1; |
4433 | ||
4434 | if (non_stop) | |
4435 | { | |
08036331 | 4436 | thread_info *thread = any_live_thread_of_inferior (inf); |
00431a78 | 4437 | notice_new_inferior (thread, thread->state == THREAD_RUNNING, |
6efcd9a8 PA |
4438 | from_tty); |
4439 | } | |
4440 | } | |
4441 | ||
4442 | /* If all-stop on top of non-stop, pause all threads. Note this | |
4443 | records the threads' stop pc, so must be done after "noticing" | |
4444 | the inferiors. */ | |
4445 | if (!non_stop) | |
4446 | { | |
4447 | stop_all_threads (); | |
4448 | ||
4449 | /* If all threads of an inferior were already stopped, we | |
4450 | haven't setup the inferior yet. */ | |
08036331 | 4451 | for (inferior *inf : all_non_exited_inferiors ()) |
6efcd9a8 | 4452 | { |
6efcd9a8 PA |
4453 | if (inf->needs_setup) |
4454 | { | |
08036331 | 4455 | thread_info *thread = any_live_thread_of_inferior (inf); |
6efcd9a8 PA |
4456 | switch_to_thread_no_regs (thread); |
4457 | setup_inferior (0); | |
4458 | } | |
4459 | } | |
221e1a37 | 4460 | } |
6efcd9a8 PA |
4461 | |
4462 | /* Now go over all threads that are stopped, and print their current | |
4463 | frame. If all-stop, then if there's a signalled thread, pick | |
4464 | that as current. */ | |
08036331 | 4465 | for (thread_info *thread : all_non_exited_threads ()) |
6efcd9a8 | 4466 | { |
6efcd9a8 PA |
4467 | if (first == NULL) |
4468 | first = thread; | |
4469 | ||
4470 | if (!non_stop) | |
00431a78 | 4471 | thread->set_running (false); |
6efcd9a8 PA |
4472 | else if (thread->state != THREAD_STOPPED) |
4473 | continue; | |
4474 | ||
6efcd9a8 PA |
4475 | if (selected == NULL |
4476 | && thread->suspend.waitstatus_pending_p) | |
4477 | selected = thread; | |
4478 | ||
5d5658a1 PA |
4479 | if (lowest_stopped == NULL |
4480 | || thread->inf->num < lowest_stopped->inf->num | |
4481 | || thread->per_inf_num < lowest_stopped->per_inf_num) | |
6efcd9a8 PA |
4482 | lowest_stopped = thread; |
4483 | ||
4484 | if (non_stop) | |
4485 | print_one_stopped_thread (thread); | |
4486 | } | |
4487 | ||
4488 | /* In all-stop, we only print the status of one thread, and leave | |
4489 | others with their status pending. */ | |
4490 | if (!non_stop) | |
4491 | { | |
08036331 | 4492 | thread_info *thread = selected; |
6efcd9a8 PA |
4493 | if (thread == NULL) |
4494 | thread = lowest_stopped; | |
4495 | if (thread == NULL) | |
4496 | thread = first; | |
4497 | ||
4498 | print_one_stopped_thread (thread); | |
4499 | } | |
4500 | ||
4501 | /* For "info program". */ | |
08036331 | 4502 | thread_info *thread = inferior_thread (); |
6efcd9a8 PA |
4503 | if (thread->state == THREAD_STOPPED) |
4504 | set_last_target_status (inferior_ptid, thread->suspend.waitstatus); | |
221e1a37 PA |
4505 | } |
4506 | ||
048094ac PA |
4507 | /* Start the remote connection and sync state. */ |
4508 | ||
f6ac5f3d PA |
4509 | void |
4510 | remote_target::start_remote (int from_tty, int extended_p) | |
c906108c | 4511 | { |
c8d104ad PA |
4512 | struct remote_state *rs = get_remote_state (); |
4513 | struct packet_config *noack_config; | |
2d717e4f | 4514 | char *wait_status = NULL; |
8621d6a9 | 4515 | |
048094ac PA |
4516 | /* Signal other parts that we're going through the initial setup, |
4517 | and so things may not be stable yet. E.g., we don't try to | |
4518 | install tracepoints until we've relocated symbols. Also, a | |
4519 | Ctrl-C before we're connected and synced up can't interrupt the | |
4520 | target. Instead, it offers to drop the (potentially wedged) | |
4521 | connection. */ | |
4522 | rs->starting_up = 1; | |
4523 | ||
522002f9 | 4524 | QUIT; |
c906108c | 4525 | |
9a7071a8 JB |
4526 | if (interrupt_on_connect) |
4527 | send_interrupt_sequence (); | |
4528 | ||
57e12211 | 4529 | /* Ack any packet which the remote side has already sent. */ |
048094ac | 4530 | remote_serial_write ("+", 1); |
1e51243a | 4531 | |
c8d104ad PA |
4532 | /* The first packet we send to the target is the optional "supported |
4533 | packets" request. If the target can answer this, it will tell us | |
4534 | which later probes to skip. */ | |
4535 | remote_query_supported (); | |
4536 | ||
d914c394 | 4537 | /* If the stub wants to get a QAllow, compose one and send it. */ |
4082afcc | 4538 | if (packet_support (PACKET_QAllow) != PACKET_DISABLE) |
f6ac5f3d | 4539 | set_permissions (); |
d914c394 | 4540 | |
57809e5e JK |
4541 | /* gdbserver < 7.7 (before its fix from 2013-12-11) did reply to any |
4542 | unknown 'v' packet with string "OK". "OK" gets interpreted by GDB | |
4543 | as a reply to known packet. For packet "vFile:setfs:" it is an | |
4544 | invalid reply and GDB would return error in | |
4545 | remote_hostio_set_filesystem, making remote files access impossible. | |
4546 | Disable "vFile:setfs:" in such case. Do not disable other 'v' packets as | |
4547 | other "vFile" packets get correctly detected even on gdbserver < 7.7. */ | |
4548 | { | |
4549 | const char v_mustreplyempty[] = "vMustReplyEmpty"; | |
4550 | ||
4551 | putpkt (v_mustreplyempty); | |
8d64371b TT |
4552 | getpkt (&rs->buf, 0); |
4553 | if (strcmp (rs->buf.data (), "OK") == 0) | |
57809e5e | 4554 | remote_protocol_packets[PACKET_vFile_setfs].support = PACKET_DISABLE; |
8d64371b | 4555 | else if (strcmp (rs->buf.data (), "") != 0) |
57809e5e | 4556 | error (_("Remote replied unexpectedly to '%s': %s"), v_mustreplyempty, |
8d64371b | 4557 | rs->buf.data ()); |
57809e5e JK |
4558 | } |
4559 | ||
c8d104ad PA |
4560 | /* Next, we possibly activate noack mode. |
4561 | ||
4562 | If the QStartNoAckMode packet configuration is set to AUTO, | |
4563 | enable noack mode if the stub reported a wish for it with | |
4564 | qSupported. | |
4565 | ||
4566 | If set to TRUE, then enable noack mode even if the stub didn't | |
4567 | report it in qSupported. If the stub doesn't reply OK, the | |
4568 | session ends with an error. | |
4569 | ||
4570 | If FALSE, then don't activate noack mode, regardless of what the | |
4571 | stub claimed should be the default with qSupported. */ | |
4572 | ||
4573 | noack_config = &remote_protocol_packets[PACKET_QStartNoAckMode]; | |
4082afcc | 4574 | if (packet_config_support (noack_config) != PACKET_DISABLE) |
c8d104ad PA |
4575 | { |
4576 | putpkt ("QStartNoAckMode"); | |
8d64371b | 4577 | getpkt (&rs->buf, 0); |
c8d104ad PA |
4578 | if (packet_ok (rs->buf, noack_config) == PACKET_OK) |
4579 | rs->noack_mode = 1; | |
4580 | } | |
4581 | ||
04bd08de | 4582 | if (extended_p) |
5fe04517 PA |
4583 | { |
4584 | /* Tell the remote that we are using the extended protocol. */ | |
4585 | putpkt ("!"); | |
8d64371b | 4586 | getpkt (&rs->buf, 0); |
5fe04517 PA |
4587 | } |
4588 | ||
9b224c5e PA |
4589 | /* Let the target know which signals it is allowed to pass down to |
4590 | the program. */ | |
4591 | update_signals_program_target (); | |
4592 | ||
d962ef82 DJ |
4593 | /* Next, if the target can specify a description, read it. We do |
4594 | this before anything involving memory or registers. */ | |
4595 | target_find_description (); | |
4596 | ||
6c95b8df PA |
4597 | /* Next, now that we know something about the target, update the |
4598 | address spaces in the program spaces. */ | |
4599 | update_address_spaces (); | |
4600 | ||
50c71eaf PA |
4601 | /* On OSs where the list of libraries is global to all |
4602 | processes, we fetch them early. */ | |
f5656ead | 4603 | if (gdbarch_has_global_solist (target_gdbarch ())) |
e696b3ad | 4604 | solib_add (NULL, from_tty, auto_solib_add); |
50c71eaf | 4605 | |
6efcd9a8 | 4606 | if (target_is_non_stop_p ()) |
74531fed | 4607 | { |
4082afcc | 4608 | if (packet_support (PACKET_QNonStop) != PACKET_ENABLE) |
3e43a32a MS |
4609 | error (_("Non-stop mode requested, but remote " |
4610 | "does not support non-stop")); | |
74531fed PA |
4611 | |
4612 | putpkt ("QNonStop:1"); | |
8d64371b | 4613 | getpkt (&rs->buf, 0); |
74531fed | 4614 | |
8d64371b TT |
4615 | if (strcmp (rs->buf.data (), "OK") != 0) |
4616 | error (_("Remote refused setting non-stop mode with: %s"), | |
4617 | rs->buf.data ()); | |
74531fed PA |
4618 | |
4619 | /* Find about threads and processes the stub is already | |
4620 | controlling. We default to adding them in the running state. | |
4621 | The '?' query below will then tell us about which threads are | |
4622 | stopped. */ | |
f6ac5f3d | 4623 | this->update_thread_list (); |
74531fed | 4624 | } |
4082afcc | 4625 | else if (packet_support (PACKET_QNonStop) == PACKET_ENABLE) |
74531fed PA |
4626 | { |
4627 | /* Don't assume that the stub can operate in all-stop mode. | |
e6f3fa52 | 4628 | Request it explicitly. */ |
74531fed | 4629 | putpkt ("QNonStop:0"); |
8d64371b | 4630 | getpkt (&rs->buf, 0); |
74531fed | 4631 | |
8d64371b TT |
4632 | if (strcmp (rs->buf.data (), "OK") != 0) |
4633 | error (_("Remote refused setting all-stop mode with: %s"), | |
4634 | rs->buf.data ()); | |
74531fed PA |
4635 | } |
4636 | ||
a0743c90 YQ |
4637 | /* Upload TSVs regardless of whether the target is running or not. The |
4638 | remote stub, such as GDBserver, may have some predefined or builtin | |
4639 | TSVs, even if the target is not running. */ | |
f6ac5f3d | 4640 | if (get_trace_status (current_trace_status ()) != -1) |
a0743c90 YQ |
4641 | { |
4642 | struct uploaded_tsv *uploaded_tsvs = NULL; | |
4643 | ||
f6ac5f3d | 4644 | upload_trace_state_variables (&uploaded_tsvs); |
a0743c90 YQ |
4645 | merge_uploaded_trace_state_variables (&uploaded_tsvs); |
4646 | } | |
4647 | ||
2d717e4f DJ |
4648 | /* Check whether the target is running now. */ |
4649 | putpkt ("?"); | |
8d64371b | 4650 | getpkt (&rs->buf, 0); |
2d717e4f | 4651 | |
6efcd9a8 | 4652 | if (!target_is_non_stop_p ()) |
2d717e4f | 4653 | { |
74531fed | 4654 | if (rs->buf[0] == 'W' || rs->buf[0] == 'X') |
2d717e4f | 4655 | { |
04bd08de | 4656 | if (!extended_p) |
74531fed | 4657 | error (_("The target is not running (try extended-remote?)")); |
c35b1492 PA |
4658 | |
4659 | /* We're connected, but not running. Drop out before we | |
4660 | call start_remote. */ | |
e278ad5b | 4661 | rs->starting_up = 0; |
c35b1492 | 4662 | return; |
2d717e4f DJ |
4663 | } |
4664 | else | |
74531fed | 4665 | { |
74531fed | 4666 | /* Save the reply for later. */ |
8d64371b TT |
4667 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
4668 | strcpy (wait_status, rs->buf.data ()); | |
74531fed PA |
4669 | } |
4670 | ||
b7ea362b | 4671 | /* Fetch thread list. */ |
e8032dde | 4672 | target_update_thread_list (); |
b7ea362b | 4673 | |
74531fed PA |
4674 | /* Let the stub know that we want it to return the thread. */ |
4675 | set_continue_thread (minus_one_ptid); | |
4676 | ||
b7ea362b PA |
4677 | if (thread_count () == 0) |
4678 | { | |
4679 | /* Target has no concept of threads at all. GDB treats | |
4680 | non-threaded target as single-threaded; add a main | |
4681 | thread. */ | |
4682 | add_current_inferior_and_thread (wait_status); | |
4683 | } | |
4684 | else | |
4685 | { | |
4686 | /* We have thread information; select the thread the target | |
4687 | says should be current. If we're reconnecting to a | |
4688 | multi-threaded program, this will ideally be the thread | |
4689 | that last reported an event before GDB disconnected. */ | |
4690 | inferior_ptid = get_current_thread (wait_status); | |
d7e15655 | 4691 | if (inferior_ptid == null_ptid) |
b7ea362b PA |
4692 | { |
4693 | /* Odd... The target was able to list threads, but not | |
4694 | tell us which thread was current (no "thread" | |
4695 | register in T stop reply?). Just pick the first | |
4696 | thread in the thread list then. */ | |
c9f35b34 KB |
4697 | |
4698 | if (remote_debug) | |
4699 | fprintf_unfiltered (gdb_stdlog, | |
4700 | "warning: couldn't determine remote " | |
4701 | "current thread; picking first in list.\n"); | |
4702 | ||
08036331 | 4703 | inferior_ptid = inferior_list->thread_list->ptid; |
b7ea362b PA |
4704 | } |
4705 | } | |
74531fed | 4706 | |
6e586cc5 YQ |
4707 | /* init_wait_for_inferior should be called before get_offsets in order |
4708 | to manage `inserted' flag in bp loc in a correct state. | |
4709 | breakpoint_init_inferior, called from init_wait_for_inferior, set | |
4710 | `inserted' flag to 0, while before breakpoint_re_set, called from | |
4711 | start_remote, set `inserted' flag to 1. In the initialization of | |
4712 | inferior, breakpoint_init_inferior should be called first, and then | |
4713 | breakpoint_re_set can be called. If this order is broken, state of | |
4714 | `inserted' flag is wrong, and cause some problems on breakpoint | |
4715 | manipulation. */ | |
4716 | init_wait_for_inferior (); | |
4717 | ||
74531fed PA |
4718 | get_offsets (); /* Get text, data & bss offsets. */ |
4719 | ||
d962ef82 DJ |
4720 | /* If we could not find a description using qXfer, and we know |
4721 | how to do it some other way, try again. This is not | |
4722 | supported for non-stop; it could be, but it is tricky if | |
4723 | there are no stopped threads when we connect. */ | |
f6ac5f3d | 4724 | if (remote_read_description_p (this) |
f5656ead | 4725 | && gdbarch_target_desc (target_gdbarch ()) == NULL) |
d962ef82 DJ |
4726 | { |
4727 | target_clear_description (); | |
4728 | target_find_description (); | |
4729 | } | |
4730 | ||
74531fed PA |
4731 | /* Use the previously fetched status. */ |
4732 | gdb_assert (wait_status != NULL); | |
8d64371b | 4733 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
4734 | rs->cached_wait_status = 1; |
4735 | ||
f6ac5f3d | 4736 | ::start_remote (from_tty); /* Initialize gdb process mechanisms. */ |
2d717e4f DJ |
4737 | } |
4738 | else | |
4739 | { | |
68c97600 PA |
4740 | /* Clear WFI global state. Do this before finding about new |
4741 | threads and inferiors, and setting the current inferior. | |
4742 | Otherwise we would clear the proceed status of the current | |
4743 | inferior when we want its stop_soon state to be preserved | |
4744 | (see notice_new_inferior). */ | |
4745 | init_wait_for_inferior (); | |
4746 | ||
74531fed PA |
4747 | /* In non-stop, we will either get an "OK", meaning that there |
4748 | are no stopped threads at this time; or, a regular stop | |
4749 | reply. In the latter case, there may be more than one thread | |
4750 | stopped --- we pull them all out using the vStopped | |
4751 | mechanism. */ | |
8d64371b | 4752 | if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 4753 | { |
722247f1 | 4754 | struct notif_client *notif = ¬if_client_stop; |
2d717e4f | 4755 | |
722247f1 YQ |
4756 | /* remote_notif_get_pending_replies acks this one, and gets |
4757 | the rest out. */ | |
f48ff2a7 | 4758 | rs->notif_state->pending_event[notif_client_stop.id] |
8d64371b | 4759 | = remote_notif_parse (this, notif, rs->buf.data ()); |
722247f1 | 4760 | remote_notif_get_pending_events (notif); |
74531fed | 4761 | } |
2d717e4f | 4762 | |
74531fed PA |
4763 | if (thread_count () == 0) |
4764 | { | |
04bd08de | 4765 | if (!extended_p) |
74531fed | 4766 | error (_("The target is not running (try extended-remote?)")); |
82f73884 | 4767 | |
c35b1492 PA |
4768 | /* We're connected, but not running. Drop out before we |
4769 | call start_remote. */ | |
e278ad5b | 4770 | rs->starting_up = 0; |
c35b1492 PA |
4771 | return; |
4772 | } | |
74531fed | 4773 | |
74531fed PA |
4774 | /* In non-stop mode, any cached wait status will be stored in |
4775 | the stop reply queue. */ | |
4776 | gdb_assert (wait_status == NULL); | |
f0223081 | 4777 | |
2455069d | 4778 | /* Report all signals during attach/startup. */ |
adc6a863 | 4779 | pass_signals ({}); |
221e1a37 PA |
4780 | |
4781 | /* If there are already stopped threads, mark them stopped and | |
4782 | report their stops before giving the prompt to the user. */ | |
6efcd9a8 | 4783 | process_initial_stop_replies (from_tty); |
221e1a37 PA |
4784 | |
4785 | if (target_can_async_p ()) | |
4786 | target_async (1); | |
74531fed | 4787 | } |
c8d104ad | 4788 | |
c8d104ad PA |
4789 | /* If we connected to a live target, do some additional setup. */ |
4790 | if (target_has_execution) | |
4791 | { | |
f4ccffad | 4792 | if (symfile_objfile) /* No use without a symbol-file. */ |
36d25514 | 4793 | remote_check_symbols (); |
c8d104ad | 4794 | } |
50c71eaf | 4795 | |
d5551862 SS |
4796 | /* Possibly the target has been engaged in a trace run started |
4797 | previously; find out where things are at. */ | |
f6ac5f3d | 4798 | if (get_trace_status (current_trace_status ()) != -1) |
d5551862 | 4799 | { |
00bf0b85 | 4800 | struct uploaded_tp *uploaded_tps = NULL; |
00bf0b85 | 4801 | |
00bf0b85 SS |
4802 | if (current_trace_status ()->running) |
4803 | printf_filtered (_("Trace is already running on the target.\n")); | |
4804 | ||
f6ac5f3d | 4805 | upload_tracepoints (&uploaded_tps); |
00bf0b85 SS |
4806 | |
4807 | merge_uploaded_tracepoints (&uploaded_tps); | |
d5551862 SS |
4808 | } |
4809 | ||
c0272db5 TW |
4810 | /* Possibly the target has been engaged in a btrace record started |
4811 | previously; find out where things are at. */ | |
4812 | remote_btrace_maybe_reopen (); | |
4813 | ||
1e51243a PA |
4814 | /* The thread and inferior lists are now synchronized with the |
4815 | target, our symbols have been relocated, and we're merged the | |
4816 | target's tracepoints with ours. We're done with basic start | |
4817 | up. */ | |
4818 | rs->starting_up = 0; | |
4819 | ||
a25a5a45 PA |
4820 | /* Maybe breakpoints are global and need to be inserted now. */ |
4821 | if (breakpoints_should_be_inserted_now ()) | |
50c71eaf | 4822 | insert_breakpoints (); |
c906108c SS |
4823 | } |
4824 | ||
4825 | /* Open a connection to a remote debugger. | |
4826 | NAME is the filename used for communication. */ | |
4827 | ||
f6ac5f3d PA |
4828 | void |
4829 | remote_target::open (const char *name, int from_tty) | |
c906108c | 4830 | { |
f6ac5f3d | 4831 | open_1 (name, from_tty, 0); |
43ff13b4 JM |
4832 | } |
4833 | ||
c906108c SS |
4834 | /* Open a connection to a remote debugger using the extended |
4835 | remote gdb protocol. NAME is the filename used for communication. */ | |
4836 | ||
f6ac5f3d PA |
4837 | void |
4838 | extended_remote_target::open (const char *name, int from_tty) | |
c906108c | 4839 | { |
f6ac5f3d | 4840 | open_1 (name, from_tty, 1 /*extended_p */); |
43ff13b4 JM |
4841 | } |
4842 | ||
ca4f7f8b PA |
4843 | /* Reset all packets back to "unknown support". Called when opening a |
4844 | new connection to a remote target. */ | |
c906108c | 4845 | |
d471ea57 | 4846 | static void |
ca4f7f8b | 4847 | reset_all_packet_configs_support (void) |
d471ea57 AC |
4848 | { |
4849 | int i; | |
a744cf53 | 4850 | |
444abaca | 4851 | for (i = 0; i < PACKET_MAX; i++) |
4082afcc | 4852 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; |
d471ea57 AC |
4853 | } |
4854 | ||
ca4f7f8b PA |
4855 | /* Initialize all packet configs. */ |
4856 | ||
4857 | static void | |
4858 | init_all_packet_configs (void) | |
4859 | { | |
4860 | int i; | |
4861 | ||
4862 | for (i = 0; i < PACKET_MAX; i++) | |
4863 | { | |
4864 | remote_protocol_packets[i].detect = AUTO_BOOLEAN_AUTO; | |
4865 | remote_protocol_packets[i].support = PACKET_SUPPORT_UNKNOWN; | |
4866 | } | |
4867 | } | |
4868 | ||
23860348 | 4869 | /* Symbol look-up. */ |
dc8acb97 | 4870 | |
6b8edb51 PA |
4871 | void |
4872 | remote_target::remote_check_symbols () | |
dc8acb97 | 4873 | { |
8d64371b | 4874 | char *tmp; |
dc8acb97 MS |
4875 | int end; |
4876 | ||
63154eca PA |
4877 | /* The remote side has no concept of inferiors that aren't running |
4878 | yet, it only knows about running processes. If we're connected | |
4879 | but our current inferior is not running, we should not invite the | |
4880 | remote target to request symbol lookups related to its | |
4881 | (unrelated) current process. */ | |
4882 | if (!target_has_execution) | |
4883 | return; | |
4884 | ||
4082afcc | 4885 | if (packet_support (PACKET_qSymbol) == PACKET_DISABLE) |
dc8acb97 MS |
4886 | return; |
4887 | ||
63154eca PA |
4888 | /* Make sure the remote is pointing at the right process. Note |
4889 | there's no way to select "no process". */ | |
3c9c4b83 PA |
4890 | set_general_process (); |
4891 | ||
6d820c5c DJ |
4892 | /* Allocate a message buffer. We can't reuse the input buffer in RS, |
4893 | because we need both at the same time. */ | |
66644cd3 | 4894 | gdb::char_vector msg (get_remote_packet_size ()); |
8d64371b | 4895 | gdb::char_vector reply (get_remote_packet_size ()); |
6d820c5c | 4896 | |
23860348 | 4897 | /* Invite target to request symbol lookups. */ |
dc8acb97 MS |
4898 | |
4899 | putpkt ("qSymbol::"); | |
8d64371b | 4900 | getpkt (&reply, 0); |
28170b88 | 4901 | packet_ok (reply, &remote_protocol_packets[PACKET_qSymbol]); |
dc8acb97 | 4902 | |
8d64371b | 4903 | while (startswith (reply.data (), "qSymbol:")) |
dc8acb97 | 4904 | { |
77e371c0 TT |
4905 | struct bound_minimal_symbol sym; |
4906 | ||
dc8acb97 | 4907 | tmp = &reply[8]; |
66644cd3 AB |
4908 | end = hex2bin (tmp, reinterpret_cast <gdb_byte *> (msg.data ()), |
4909 | strlen (tmp) / 2); | |
dc8acb97 | 4910 | msg[end] = '\0'; |
66644cd3 | 4911 | sym = lookup_minimal_symbol (msg.data (), NULL, NULL); |
3b7344d5 | 4912 | if (sym.minsym == NULL) |
66644cd3 AB |
4913 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol::%s", |
4914 | &reply[8]); | |
dc8acb97 | 4915 | else |
2bbe3cc1 | 4916 | { |
f5656ead | 4917 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
77e371c0 | 4918 | CORE_ADDR sym_addr = BMSYMBOL_VALUE_ADDRESS (sym); |
2bbe3cc1 DJ |
4919 | |
4920 | /* If this is a function address, return the start of code | |
4921 | instead of any data function descriptor. */ | |
f5656ead | 4922 | sym_addr = gdbarch_convert_from_func_ptr_addr (target_gdbarch (), |
2bbe3cc1 | 4923 | sym_addr, |
8b88a78e | 4924 | current_top_target ()); |
2bbe3cc1 | 4925 | |
66644cd3 | 4926 | xsnprintf (msg.data (), get_remote_packet_size (), "qSymbol:%s:%s", |
5af949e3 | 4927 | phex_nz (sym_addr, addr_size), &reply[8]); |
2bbe3cc1 | 4928 | } |
66644cd3 AB |
4929 | |
4930 | putpkt (msg.data ()); | |
8d64371b | 4931 | getpkt (&reply, 0); |
dc8acb97 MS |
4932 | } |
4933 | } | |
4934 | ||
9db8d71f | 4935 | static struct serial * |
baa336ce | 4936 | remote_serial_open (const char *name) |
9db8d71f DJ |
4937 | { |
4938 | static int udp_warning = 0; | |
4939 | ||
4940 | /* FIXME: Parsing NAME here is a hack. But we want to warn here instead | |
4941 | of in ser-tcp.c, because it is the remote protocol assuming that the | |
4942 | serial connection is reliable and not the serial connection promising | |
4943 | to be. */ | |
61012eef | 4944 | if (!udp_warning && startswith (name, "udp:")) |
9db8d71f | 4945 | { |
3e43a32a MS |
4946 | warning (_("The remote protocol may be unreliable over UDP.\n" |
4947 | "Some events may be lost, rendering further debugging " | |
4948 | "impossible.")); | |
9db8d71f DJ |
4949 | udp_warning = 1; |
4950 | } | |
4951 | ||
4952 | return serial_open (name); | |
4953 | } | |
4954 | ||
d914c394 SS |
4955 | /* Inform the target of our permission settings. The permission flags |
4956 | work without this, but if the target knows the settings, it can do | |
4957 | a couple things. First, it can add its own check, to catch cases | |
4958 | that somehow manage to get by the permissions checks in target | |
4959 | methods. Second, if the target is wired to disallow particular | |
4960 | settings (for instance, a system in the field that is not set up to | |
4961 | be able to stop at a breakpoint), it can object to any unavailable | |
4962 | permissions. */ | |
4963 | ||
4964 | void | |
f6ac5f3d | 4965 | remote_target::set_permissions () |
d914c394 SS |
4966 | { |
4967 | struct remote_state *rs = get_remote_state (); | |
4968 | ||
8d64371b | 4969 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAllow:" |
bba74b36 YQ |
4970 | "WriteReg:%x;WriteMem:%x;" |
4971 | "InsertBreak:%x;InsertTrace:%x;" | |
4972 | "InsertFastTrace:%x;Stop:%x", | |
4973 | may_write_registers, may_write_memory, | |
4974 | may_insert_breakpoints, may_insert_tracepoints, | |
4975 | may_insert_fast_tracepoints, may_stop); | |
d914c394 | 4976 | putpkt (rs->buf); |
8d64371b | 4977 | getpkt (&rs->buf, 0); |
d914c394 SS |
4978 | |
4979 | /* If the target didn't like the packet, warn the user. Do not try | |
4980 | to undo the user's settings, that would just be maddening. */ | |
8d64371b TT |
4981 | if (strcmp (rs->buf.data (), "OK") != 0) |
4982 | warning (_("Remote refused setting permissions with: %s"), | |
4983 | rs->buf.data ()); | |
d914c394 SS |
4984 | } |
4985 | ||
be2a5f71 DJ |
4986 | /* This type describes each known response to the qSupported |
4987 | packet. */ | |
4988 | struct protocol_feature | |
4989 | { | |
4990 | /* The name of this protocol feature. */ | |
4991 | const char *name; | |
4992 | ||
4993 | /* The default for this protocol feature. */ | |
4994 | enum packet_support default_support; | |
4995 | ||
4996 | /* The function to call when this feature is reported, or after | |
4997 | qSupported processing if the feature is not supported. | |
4998 | The first argument points to this structure. The second | |
4999 | argument indicates whether the packet requested support be | |
5000 | enabled, disabled, or probed (or the default, if this function | |
5001 | is being called at the end of processing and this feature was | |
5002 | not reported). The third argument may be NULL; if not NULL, it | |
5003 | is a NUL-terminated string taken from the packet following | |
5004 | this feature's name and an equals sign. */ | |
6b8edb51 PA |
5005 | void (*func) (remote_target *remote, const struct protocol_feature *, |
5006 | enum packet_support, const char *); | |
be2a5f71 DJ |
5007 | |
5008 | /* The corresponding packet for this feature. Only used if | |
5009 | FUNC is remote_supported_packet. */ | |
5010 | int packet; | |
5011 | }; | |
5012 | ||
be2a5f71 | 5013 | static void |
6b8edb51 PA |
5014 | remote_supported_packet (remote_target *remote, |
5015 | const struct protocol_feature *feature, | |
be2a5f71 DJ |
5016 | enum packet_support support, |
5017 | const char *argument) | |
5018 | { | |
5019 | if (argument) | |
5020 | { | |
5021 | warning (_("Remote qSupported response supplied an unexpected value for" | |
5022 | " \"%s\"."), feature->name); | |
5023 | return; | |
5024 | } | |
5025 | ||
4082afcc | 5026 | remote_protocol_packets[feature->packet].support = support; |
be2a5f71 | 5027 | } |
be2a5f71 | 5028 | |
6b8edb51 PA |
5029 | void |
5030 | remote_target::remote_packet_size (const protocol_feature *feature, | |
5031 | enum packet_support support, const char *value) | |
be2a5f71 DJ |
5032 | { |
5033 | struct remote_state *rs = get_remote_state (); | |
5034 | ||
5035 | int packet_size; | |
5036 | char *value_end; | |
5037 | ||
5038 | if (support != PACKET_ENABLE) | |
5039 | return; | |
5040 | ||
5041 | if (value == NULL || *value == '\0') | |
5042 | { | |
5043 | warning (_("Remote target reported \"%s\" without a size."), | |
5044 | feature->name); | |
5045 | return; | |
5046 | } | |
5047 | ||
5048 | errno = 0; | |
5049 | packet_size = strtol (value, &value_end, 16); | |
5050 | if (errno != 0 || *value_end != '\0' || packet_size < 0) | |
5051 | { | |
5052 | warning (_("Remote target reported \"%s\" with a bad size: \"%s\"."), | |
5053 | feature->name, value); | |
5054 | return; | |
5055 | } | |
5056 | ||
be2a5f71 DJ |
5057 | /* Record the new maximum packet size. */ |
5058 | rs->explicit_packet_size = packet_size; | |
5059 | } | |
5060 | ||
6b8edb51 PA |
5061 | void |
5062 | remote_packet_size (remote_target *remote, const protocol_feature *feature, | |
5063 | enum packet_support support, const char *value) | |
5064 | { | |
5065 | remote->remote_packet_size (feature, support, value); | |
5066 | } | |
5067 | ||
dc473cfb | 5068 | static const struct protocol_feature remote_protocol_features[] = { |
0876f84a | 5069 | { "PacketSize", PACKET_DISABLE, remote_packet_size, -1 }, |
40e57cf2 | 5070 | { "qXfer:auxv:read", PACKET_DISABLE, remote_supported_packet, |
fd79ecee | 5071 | PACKET_qXfer_auxv }, |
c78fa86a GB |
5072 | { "qXfer:exec-file:read", PACKET_DISABLE, remote_supported_packet, |
5073 | PACKET_qXfer_exec_file }, | |
23181151 DJ |
5074 | { "qXfer:features:read", PACKET_DISABLE, remote_supported_packet, |
5075 | PACKET_qXfer_features }, | |
cfa9d6d9 DJ |
5076 | { "qXfer:libraries:read", PACKET_DISABLE, remote_supported_packet, |
5077 | PACKET_qXfer_libraries }, | |
2268b414 JK |
5078 | { "qXfer:libraries-svr4:read", PACKET_DISABLE, remote_supported_packet, |
5079 | PACKET_qXfer_libraries_svr4 }, | |
ced63ec0 | 5080 | { "augmented-libraries-svr4-read", PACKET_DISABLE, |
4082afcc | 5081 | remote_supported_packet, PACKET_augmented_libraries_svr4_read_feature }, |
fd79ecee | 5082 | { "qXfer:memory-map:read", PACKET_DISABLE, remote_supported_packet, |
89be2091 | 5083 | PACKET_qXfer_memory_map }, |
07e059b5 VP |
5084 | { "qXfer:osdata:read", PACKET_DISABLE, remote_supported_packet, |
5085 | PACKET_qXfer_osdata }, | |
dc146f7c VP |
5086 | { "qXfer:threads:read", PACKET_DISABLE, remote_supported_packet, |
5087 | PACKET_qXfer_threads }, | |
b3b9301e PA |
5088 | { "qXfer:traceframe-info:read", PACKET_DISABLE, remote_supported_packet, |
5089 | PACKET_qXfer_traceframe_info }, | |
89be2091 DJ |
5090 | { "QPassSignals", PACKET_DISABLE, remote_supported_packet, |
5091 | PACKET_QPassSignals }, | |
82075af2 JS |
5092 | { "QCatchSyscalls", PACKET_DISABLE, remote_supported_packet, |
5093 | PACKET_QCatchSyscalls }, | |
9b224c5e PA |
5094 | { "QProgramSignals", PACKET_DISABLE, remote_supported_packet, |
5095 | PACKET_QProgramSignals }, | |
bc3b087d SDJ |
5096 | { "QSetWorkingDir", PACKET_DISABLE, remote_supported_packet, |
5097 | PACKET_QSetWorkingDir }, | |
aefd8b33 SDJ |
5098 | { "QStartupWithShell", PACKET_DISABLE, remote_supported_packet, |
5099 | PACKET_QStartupWithShell }, | |
0a2dde4a SDJ |
5100 | { "QEnvironmentHexEncoded", PACKET_DISABLE, remote_supported_packet, |
5101 | PACKET_QEnvironmentHexEncoded }, | |
5102 | { "QEnvironmentReset", PACKET_DISABLE, remote_supported_packet, | |
5103 | PACKET_QEnvironmentReset }, | |
5104 | { "QEnvironmentUnset", PACKET_DISABLE, remote_supported_packet, | |
5105 | PACKET_QEnvironmentUnset }, | |
a6f3e723 SL |
5106 | { "QStartNoAckMode", PACKET_DISABLE, remote_supported_packet, |
5107 | PACKET_QStartNoAckMode }, | |
4082afcc PA |
5108 | { "multiprocess", PACKET_DISABLE, remote_supported_packet, |
5109 | PACKET_multiprocess_feature }, | |
5110 | { "QNonStop", PACKET_DISABLE, remote_supported_packet, PACKET_QNonStop }, | |
4aa995e1 PA |
5111 | { "qXfer:siginfo:read", PACKET_DISABLE, remote_supported_packet, |
5112 | PACKET_qXfer_siginfo_read }, | |
5113 | { "qXfer:siginfo:write", PACKET_DISABLE, remote_supported_packet, | |
5114 | PACKET_qXfer_siginfo_write }, | |
4082afcc | 5115 | { "ConditionalTracepoints", PACKET_DISABLE, remote_supported_packet, |
782b2b07 | 5116 | PACKET_ConditionalTracepoints }, |
4082afcc | 5117 | { "ConditionalBreakpoints", PACKET_DISABLE, remote_supported_packet, |
3788aec7 | 5118 | PACKET_ConditionalBreakpoints }, |
4082afcc | 5119 | { "BreakpointCommands", PACKET_DISABLE, remote_supported_packet, |
d3ce09f5 | 5120 | PACKET_BreakpointCommands }, |
4082afcc | 5121 | { "FastTracepoints", PACKET_DISABLE, remote_supported_packet, |
7a697b8d | 5122 | PACKET_FastTracepoints }, |
4082afcc | 5123 | { "StaticTracepoints", PACKET_DISABLE, remote_supported_packet, |
0fb4aa4b | 5124 | PACKET_StaticTracepoints }, |
4082afcc | 5125 | {"InstallInTrace", PACKET_DISABLE, remote_supported_packet, |
1e4d1764 | 5126 | PACKET_InstallInTrace}, |
4082afcc PA |
5127 | { "DisconnectedTracing", PACKET_DISABLE, remote_supported_packet, |
5128 | PACKET_DisconnectedTracing_feature }, | |
40ab02ce MS |
5129 | { "ReverseContinue", PACKET_DISABLE, remote_supported_packet, |
5130 | PACKET_bc }, | |
5131 | { "ReverseStep", PACKET_DISABLE, remote_supported_packet, | |
5132 | PACKET_bs }, | |
409873ef SS |
5133 | { "TracepointSource", PACKET_DISABLE, remote_supported_packet, |
5134 | PACKET_TracepointSource }, | |
d914c394 SS |
5135 | { "QAllow", PACKET_DISABLE, remote_supported_packet, |
5136 | PACKET_QAllow }, | |
4082afcc PA |
5137 | { "EnableDisableTracepoints", PACKET_DISABLE, remote_supported_packet, |
5138 | PACKET_EnableDisableTracepoints_feature }, | |
78d85199 YQ |
5139 | { "qXfer:fdpic:read", PACKET_DISABLE, remote_supported_packet, |
5140 | PACKET_qXfer_fdpic }, | |
169081d0 TG |
5141 | { "qXfer:uib:read", PACKET_DISABLE, remote_supported_packet, |
5142 | PACKET_qXfer_uib }, | |
03583c20 UW |
5143 | { "QDisableRandomization", PACKET_DISABLE, remote_supported_packet, |
5144 | PACKET_QDisableRandomization }, | |
d1feda86 | 5145 | { "QAgent", PACKET_DISABLE, remote_supported_packet, PACKET_QAgent}, |
f6f899bf HAQ |
5146 | { "QTBuffer:size", PACKET_DISABLE, |
5147 | remote_supported_packet, PACKET_QTBuffer_size}, | |
4082afcc | 5148 | { "tracenz", PACKET_DISABLE, remote_supported_packet, PACKET_tracenz_feature }, |
9accd112 MM |
5149 | { "Qbtrace:off", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_off }, |
5150 | { "Qbtrace:bts", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_bts }, | |
b20a6524 | 5151 | { "Qbtrace:pt", PACKET_DISABLE, remote_supported_packet, PACKET_Qbtrace_pt }, |
9accd112 | 5152 | { "qXfer:btrace:read", PACKET_DISABLE, remote_supported_packet, |
f4abbc16 MM |
5153 | PACKET_qXfer_btrace }, |
5154 | { "qXfer:btrace-conf:read", PACKET_DISABLE, remote_supported_packet, | |
d33501a5 MM |
5155 | PACKET_qXfer_btrace_conf }, |
5156 | { "Qbtrace-conf:bts:size", PACKET_DISABLE, remote_supported_packet, | |
f7e6eed5 PA |
5157 | PACKET_Qbtrace_conf_bts_size }, |
5158 | { "swbreak", PACKET_DISABLE, remote_supported_packet, PACKET_swbreak_feature }, | |
0a93529c | 5159 | { "hwbreak", PACKET_DISABLE, remote_supported_packet, PACKET_hwbreak_feature }, |
89245bc0 DB |
5160 | { "fork-events", PACKET_DISABLE, remote_supported_packet, |
5161 | PACKET_fork_event_feature }, | |
5162 | { "vfork-events", PACKET_DISABLE, remote_supported_packet, | |
5163 | PACKET_vfork_event_feature }, | |
94585166 DB |
5164 | { "exec-events", PACKET_DISABLE, remote_supported_packet, |
5165 | PACKET_exec_event_feature }, | |
b20a6524 | 5166 | { "Qbtrace-conf:pt:size", PACKET_DISABLE, remote_supported_packet, |
750ce8d1 | 5167 | PACKET_Qbtrace_conf_pt_size }, |
65706a29 PA |
5168 | { "vContSupported", PACKET_DISABLE, remote_supported_packet, PACKET_vContSupported }, |
5169 | { "QThreadEvents", PACKET_DISABLE, remote_supported_packet, PACKET_QThreadEvents }, | |
f2faf941 | 5170 | { "no-resumed", PACKET_DISABLE, remote_supported_packet, PACKET_no_resumed }, |
be2a5f71 DJ |
5171 | }; |
5172 | ||
c8d5aac9 L |
5173 | static char *remote_support_xml; |
5174 | ||
5175 | /* Register string appended to "xmlRegisters=" in qSupported query. */ | |
5176 | ||
5177 | void | |
6e39997a | 5178 | register_remote_support_xml (const char *xml) |
c8d5aac9 L |
5179 | { |
5180 | #if defined(HAVE_LIBEXPAT) | |
5181 | if (remote_support_xml == NULL) | |
c4f7c687 | 5182 | remote_support_xml = concat ("xmlRegisters=", xml, (char *) NULL); |
c8d5aac9 L |
5183 | else |
5184 | { | |
5185 | char *copy = xstrdup (remote_support_xml + 13); | |
5186 | char *p = strtok (copy, ","); | |
5187 | ||
5188 | do | |
5189 | { | |
5190 | if (strcmp (p, xml) == 0) | |
5191 | { | |
5192 | /* already there */ | |
5193 | xfree (copy); | |
5194 | return; | |
5195 | } | |
5196 | } | |
5197 | while ((p = strtok (NULL, ",")) != NULL); | |
5198 | xfree (copy); | |
5199 | ||
94b0dee1 PA |
5200 | remote_support_xml = reconcat (remote_support_xml, |
5201 | remote_support_xml, ",", xml, | |
5202 | (char *) NULL); | |
c8d5aac9 L |
5203 | } |
5204 | #endif | |
5205 | } | |
5206 | ||
69b6ecb0 TT |
5207 | static void |
5208 | remote_query_supported_append (std::string *msg, const char *append) | |
c8d5aac9 | 5209 | { |
69b6ecb0 TT |
5210 | if (!msg->empty ()) |
5211 | msg->append (";"); | |
5212 | msg->append (append); | |
c8d5aac9 L |
5213 | } |
5214 | ||
6b8edb51 PA |
5215 | void |
5216 | remote_target::remote_query_supported () | |
be2a5f71 DJ |
5217 | { |
5218 | struct remote_state *rs = get_remote_state (); | |
5219 | char *next; | |
5220 | int i; | |
5221 | unsigned char seen [ARRAY_SIZE (remote_protocol_features)]; | |
5222 | ||
5223 | /* The packet support flags are handled differently for this packet | |
5224 | than for most others. We treat an error, a disabled packet, and | |
5225 | an empty response identically: any features which must be reported | |
5226 | to be used will be automatically disabled. An empty buffer | |
5227 | accomplishes this, since that is also the representation for a list | |
5228 | containing no features. */ | |
5229 | ||
5230 | rs->buf[0] = 0; | |
4082afcc | 5231 | if (packet_support (PACKET_qSupported) != PACKET_DISABLE) |
be2a5f71 | 5232 | { |
69b6ecb0 | 5233 | std::string q; |
c8d5aac9 | 5234 | |
73b8c1fd | 5235 | if (packet_set_cmd_state (PACKET_multiprocess_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5236 | remote_query_supported_append (&q, "multiprocess+"); |
c8d5aac9 | 5237 | |
f7e6eed5 | 5238 | if (packet_set_cmd_state (PACKET_swbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5239 | remote_query_supported_append (&q, "swbreak+"); |
f7e6eed5 | 5240 | if (packet_set_cmd_state (PACKET_hwbreak_feature) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5241 | remote_query_supported_append (&q, "hwbreak+"); |
f7e6eed5 | 5242 | |
69b6ecb0 | 5243 | remote_query_supported_append (&q, "qRelocInsn+"); |
dde08ee1 | 5244 | |
8020350c DB |
5245 | if (packet_set_cmd_state (PACKET_fork_event_feature) |
5246 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5247 | remote_query_supported_append (&q, "fork-events+"); |
8020350c DB |
5248 | if (packet_set_cmd_state (PACKET_vfork_event_feature) |
5249 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5250 | remote_query_supported_append (&q, "vfork-events+"); |
8020350c DB |
5251 | if (packet_set_cmd_state (PACKET_exec_event_feature) |
5252 | != AUTO_BOOLEAN_FALSE) | |
69b6ecb0 | 5253 | remote_query_supported_append (&q, "exec-events+"); |
89245bc0 | 5254 | |
750ce8d1 | 5255 | if (packet_set_cmd_state (PACKET_vContSupported) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5256 | remote_query_supported_append (&q, "vContSupported+"); |
750ce8d1 | 5257 | |
65706a29 | 5258 | if (packet_set_cmd_state (PACKET_QThreadEvents) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5259 | remote_query_supported_append (&q, "QThreadEvents+"); |
65706a29 | 5260 | |
f2faf941 | 5261 | if (packet_set_cmd_state (PACKET_no_resumed) != AUTO_BOOLEAN_FALSE) |
69b6ecb0 | 5262 | remote_query_supported_append (&q, "no-resumed+"); |
f2faf941 | 5263 | |
b35d5edb PA |
5264 | /* Keep this one last to work around a gdbserver <= 7.10 bug in |
5265 | the qSupported:xmlRegisters=i386 handling. */ | |
7cc244de PA |
5266 | if (remote_support_xml != NULL |
5267 | && packet_support (PACKET_qXfer_features) != PACKET_DISABLE) | |
69b6ecb0 | 5268 | remote_query_supported_append (&q, remote_support_xml); |
82f73884 | 5269 | |
69b6ecb0 TT |
5270 | q = "qSupported:" + q; |
5271 | putpkt (q.c_str ()); | |
94b0dee1 | 5272 | |
8d64371b | 5273 | getpkt (&rs->buf, 0); |
be2a5f71 DJ |
5274 | |
5275 | /* If an error occured, warn, but do not return - just reset the | |
5276 | buffer to empty and go on to disable features. */ | |
5277 | if (packet_ok (rs->buf, &remote_protocol_packets[PACKET_qSupported]) | |
5278 | == PACKET_ERROR) | |
5279 | { | |
8d64371b | 5280 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
be2a5f71 DJ |
5281 | rs->buf[0] = 0; |
5282 | } | |
5283 | } | |
5284 | ||
5285 | memset (seen, 0, sizeof (seen)); | |
5286 | ||
8d64371b | 5287 | next = rs->buf.data (); |
be2a5f71 DJ |
5288 | while (*next) |
5289 | { | |
5290 | enum packet_support is_supported; | |
5291 | char *p, *end, *name_end, *value; | |
5292 | ||
5293 | /* First separate out this item from the rest of the packet. If | |
5294 | there's another item after this, we overwrite the separator | |
5295 | (terminated strings are much easier to work with). */ | |
5296 | p = next; | |
5297 | end = strchr (p, ';'); | |
5298 | if (end == NULL) | |
5299 | { | |
5300 | end = p + strlen (p); | |
5301 | next = end; | |
5302 | } | |
5303 | else | |
5304 | { | |
89be2091 DJ |
5305 | *end = '\0'; |
5306 | next = end + 1; | |
5307 | ||
be2a5f71 DJ |
5308 | if (end == p) |
5309 | { | |
5310 | warning (_("empty item in \"qSupported\" response")); | |
5311 | continue; | |
5312 | } | |
be2a5f71 DJ |
5313 | } |
5314 | ||
5315 | name_end = strchr (p, '='); | |
5316 | if (name_end) | |
5317 | { | |
5318 | /* This is a name=value entry. */ | |
5319 | is_supported = PACKET_ENABLE; | |
5320 | value = name_end + 1; | |
5321 | *name_end = '\0'; | |
5322 | } | |
5323 | else | |
5324 | { | |
5325 | value = NULL; | |
5326 | switch (end[-1]) | |
5327 | { | |
5328 | case '+': | |
5329 | is_supported = PACKET_ENABLE; | |
5330 | break; | |
5331 | ||
5332 | case '-': | |
5333 | is_supported = PACKET_DISABLE; | |
5334 | break; | |
5335 | ||
5336 | case '?': | |
5337 | is_supported = PACKET_SUPPORT_UNKNOWN; | |
5338 | break; | |
5339 | ||
5340 | default: | |
3e43a32a MS |
5341 | warning (_("unrecognized item \"%s\" " |
5342 | "in \"qSupported\" response"), p); | |
be2a5f71 DJ |
5343 | continue; |
5344 | } | |
5345 | end[-1] = '\0'; | |
5346 | } | |
5347 | ||
5348 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5349 | if (strcmp (remote_protocol_features[i].name, p) == 0) | |
5350 | { | |
5351 | const struct protocol_feature *feature; | |
5352 | ||
5353 | seen[i] = 1; | |
5354 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5355 | feature->func (this, feature, is_supported, value); |
be2a5f71 DJ |
5356 | break; |
5357 | } | |
5358 | } | |
5359 | ||
5360 | /* If we increased the packet size, make sure to increase the global | |
5361 | buffer size also. We delay this until after parsing the entire | |
5362 | qSupported packet, because this is the same buffer we were | |
5363 | parsing. */ | |
8d64371b TT |
5364 | if (rs->buf.size () < rs->explicit_packet_size) |
5365 | rs->buf.resize (rs->explicit_packet_size); | |
be2a5f71 DJ |
5366 | |
5367 | /* Handle the defaults for unmentioned features. */ | |
5368 | for (i = 0; i < ARRAY_SIZE (remote_protocol_features); i++) | |
5369 | if (!seen[i]) | |
5370 | { | |
5371 | const struct protocol_feature *feature; | |
5372 | ||
5373 | feature = &remote_protocol_features[i]; | |
6b8edb51 | 5374 | feature->func (this, feature, feature->default_support, NULL); |
be2a5f71 DJ |
5375 | } |
5376 | } | |
5377 | ||
048094ac PA |
5378 | /* Serial QUIT handler for the remote serial descriptor. |
5379 | ||
5380 | Defers handling a Ctrl-C until we're done with the current | |
5381 | command/response packet sequence, unless: | |
5382 | ||
5383 | - We're setting up the connection. Don't send a remote interrupt | |
5384 | request, as we're not fully synced yet. Quit immediately | |
5385 | instead. | |
5386 | ||
5387 | - The target has been resumed in the foreground | |
223ffa71 | 5388 | (target_terminal::is_ours is false) with a synchronous resume |
048094ac PA |
5389 | packet, and we're blocked waiting for the stop reply, thus a |
5390 | Ctrl-C should be immediately sent to the target. | |
5391 | ||
5392 | - We get a second Ctrl-C while still within the same serial read or | |
5393 | write. In that case the serial is seemingly wedged --- offer to | |
5394 | quit/disconnect. | |
5395 | ||
5396 | - We see a second Ctrl-C without target response, after having | |
5397 | previously interrupted the target. In that case the target/stub | |
5398 | is probably wedged --- offer to quit/disconnect. | |
5399 | */ | |
5400 | ||
6b8edb51 PA |
5401 | void |
5402 | remote_target::remote_serial_quit_handler () | |
048094ac PA |
5403 | { |
5404 | struct remote_state *rs = get_remote_state (); | |
5405 | ||
5406 | if (check_quit_flag ()) | |
5407 | { | |
5408 | /* If we're starting up, we're not fully synced yet. Quit | |
5409 | immediately. */ | |
5410 | if (rs->starting_up) | |
5411 | quit (); | |
5412 | else if (rs->got_ctrlc_during_io) | |
5413 | { | |
5414 | if (query (_("The target is not responding to GDB commands.\n" | |
5415 | "Stop debugging it? "))) | |
5416 | remote_unpush_and_throw (); | |
5417 | } | |
5418 | /* If ^C has already been sent once, offer to disconnect. */ | |
223ffa71 | 5419 | else if (!target_terminal::is_ours () && rs->ctrlc_pending_p) |
048094ac PA |
5420 | interrupt_query (); |
5421 | /* All-stop protocol, and blocked waiting for stop reply. Send | |
5422 | an interrupt request. */ | |
223ffa71 | 5423 | else if (!target_terminal::is_ours () && rs->waiting_for_stop_reply) |
e671cd59 | 5424 | target_interrupt (); |
048094ac PA |
5425 | else |
5426 | rs->got_ctrlc_during_io = 1; | |
5427 | } | |
5428 | } | |
5429 | ||
6b8edb51 PA |
5430 | /* The remote_target that is current while the quit handler is |
5431 | overridden with remote_serial_quit_handler. */ | |
5432 | static remote_target *curr_quit_handler_target; | |
5433 | ||
5434 | static void | |
5435 | remote_serial_quit_handler () | |
5436 | { | |
5437 | curr_quit_handler_target->remote_serial_quit_handler (); | |
5438 | } | |
5439 | ||
78a095c3 JK |
5440 | /* Remove any of the remote.c targets from target stack. Upper targets depend |
5441 | on it so remove them first. */ | |
5442 | ||
5443 | static void | |
5444 | remote_unpush_target (void) | |
5445 | { | |
915ef8b1 | 5446 | pop_all_targets_at_and_above (process_stratum); |
78a095c3 | 5447 | } |
be2a5f71 | 5448 | |
048094ac PA |
5449 | static void |
5450 | remote_unpush_and_throw (void) | |
5451 | { | |
5452 | remote_unpush_target (); | |
5453 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); | |
5454 | } | |
5455 | ||
f6ac5f3d PA |
5456 | void |
5457 | remote_target::open_1 (const char *name, int from_tty, int extended_p) | |
c906108c | 5458 | { |
6b8edb51 | 5459 | remote_target *curr_remote = get_current_remote_target (); |
a6f3e723 | 5460 | |
c906108c | 5461 | if (name == 0) |
8a3fe4f8 | 5462 | error (_("To open a remote debug connection, you need to specify what\n" |
22e04375 | 5463 | "serial device is attached to the remote system\n" |
8a3fe4f8 | 5464 | "(e.g. /dev/ttyS0, /dev/ttya, COM1, etc.).")); |
c906108c | 5465 | |
2d717e4f | 5466 | /* If we're connected to a running target, target_preopen will kill it. |
78a095c3 JK |
5467 | Ask this question first, before target_preopen has a chance to kill |
5468 | anything. */ | |
6b8edb51 | 5469 | if (curr_remote != NULL && !have_inferiors ()) |
2d717e4f | 5470 | { |
78a095c3 JK |
5471 | if (from_tty |
5472 | && !query (_("Already connected to a remote target. Disconnect? "))) | |
2d717e4f DJ |
5473 | error (_("Still connected.")); |
5474 | } | |
5475 | ||
78a095c3 | 5476 | /* Here the possibly existing remote target gets unpushed. */ |
c906108c SS |
5477 | target_preopen (from_tty); |
5478 | ||
ad9a8f3f | 5479 | remote_fileio_reset (); |
1dd41f16 NS |
5480 | reopen_exec_file (); |
5481 | reread_symbols (); | |
5482 | ||
6b8edb51 PA |
5483 | remote_target *remote |
5484 | = (extended_p ? new extended_remote_target () : new remote_target ()); | |
5485 | target_ops_up target_holder (remote); | |
5486 | ||
5487 | remote_state *rs = remote->get_remote_state (); | |
5488 | ||
5489 | /* See FIXME above. */ | |
5490 | if (!target_async_permitted) | |
5491 | rs->wait_forever_enabled_p = 1; | |
5492 | ||
5d93a237 TT |
5493 | rs->remote_desc = remote_serial_open (name); |
5494 | if (!rs->remote_desc) | |
c906108c SS |
5495 | perror_with_name (name); |
5496 | ||
5497 | if (baud_rate != -1) | |
5498 | { | |
5d93a237 | 5499 | if (serial_setbaudrate (rs->remote_desc, baud_rate)) |
c906108c | 5500 | { |
9b74d5d3 KB |
5501 | /* The requested speed could not be set. Error out to |
5502 | top level after closing remote_desc. Take care to | |
5503 | set remote_desc to NULL to avoid closing remote_desc | |
5504 | more than once. */ | |
5d93a237 TT |
5505 | serial_close (rs->remote_desc); |
5506 | rs->remote_desc = NULL; | |
c906108c SS |
5507 | perror_with_name (name); |
5508 | } | |
5509 | } | |
5510 | ||
236af5e3 | 5511 | serial_setparity (rs->remote_desc, serial_parity); |
5d93a237 | 5512 | serial_raw (rs->remote_desc); |
c906108c SS |
5513 | |
5514 | /* If there is something sitting in the buffer we might take it as a | |
5515 | response to a command, which would be bad. */ | |
5d93a237 | 5516 | serial_flush_input (rs->remote_desc); |
c906108c SS |
5517 | |
5518 | if (from_tty) | |
5519 | { | |
5520 | puts_filtered ("Remote debugging using "); | |
5521 | puts_filtered (name); | |
5522 | puts_filtered ("\n"); | |
5523 | } | |
d9f719f1 | 5524 | |
6b8edb51 | 5525 | /* Switch to using the remote target now. */ |
dea57a62 | 5526 | push_target (std::move (target_holder)); |
c906108c | 5527 | |
74531fed | 5528 | /* Register extra event sources in the event loop. */ |
6b8edb51 | 5529 | rs->remote_async_inferior_event_token |
74531fed | 5530 | = create_async_event_handler (remote_async_inferior_event_handler, |
6b8edb51 PA |
5531 | remote); |
5532 | rs->notif_state = remote_notif_state_allocate (remote); | |
74531fed | 5533 | |
be2a5f71 DJ |
5534 | /* Reset the target state; these things will be queried either by |
5535 | remote_query_supported or as they are needed. */ | |
ca4f7f8b | 5536 | reset_all_packet_configs_support (); |
74531fed | 5537 | rs->cached_wait_status = 0; |
be2a5f71 | 5538 | rs->explicit_packet_size = 0; |
a6f3e723 | 5539 | rs->noack_mode = 0; |
82f73884 | 5540 | rs->extended = extended_p; |
e24a49d8 | 5541 | rs->waiting_for_stop_reply = 0; |
3a29589a | 5542 | rs->ctrlc_pending_p = 0; |
048094ac | 5543 | rs->got_ctrlc_during_io = 0; |
802188a7 | 5544 | |
47f8a51d TT |
5545 | rs->general_thread = not_sent_ptid; |
5546 | rs->continue_thread = not_sent_ptid; | |
262e1174 | 5547 | rs->remote_traceframe_number = -1; |
c906108c | 5548 | |
3a00c802 PA |
5549 | rs->last_resume_exec_dir = EXEC_FORWARD; |
5550 | ||
9d1f7ab2 | 5551 | /* Probe for ability to use "ThreadInfo" query, as required. */ |
b80fafe3 TT |
5552 | rs->use_threadinfo_query = 1; |
5553 | rs->use_threadextra_query = 1; | |
9d1f7ab2 | 5554 | |
dd194f6b | 5555 | rs->readahead_cache.invalidate (); |
80152258 | 5556 | |
c6ebd6cf | 5557 | if (target_async_permitted) |
92d1e331 | 5558 | { |
92d1e331 DJ |
5559 | /* FIXME: cagney/1999-09-23: During the initial connection it is |
5560 | assumed that the target is already ready and able to respond to | |
0df8b418 | 5561 | requests. Unfortunately remote_start_remote() eventually calls |
92d1e331 | 5562 | wait_for_inferior() with no timeout. wait_forever_enabled_p gets |
0df8b418 | 5563 | around this. Eventually a mechanism that allows |
92d1e331 | 5564 | wait_for_inferior() to expect/get timeouts will be |
23860348 | 5565 | implemented. */ |
6b8edb51 | 5566 | rs->wait_forever_enabled_p = 0; |
92d1e331 DJ |
5567 | } |
5568 | ||
23860348 | 5569 | /* First delete any symbols previously loaded from shared libraries. */ |
f78f6cf1 | 5570 | no_shared_libraries (NULL, 0); |
f78f6cf1 | 5571 | |
36918e70 | 5572 | /* Start the remote connection. If error() or QUIT, discard this |
165b8e33 AC |
5573 | target (we'd otherwise be in an inconsistent state) and then |
5574 | propogate the error on up the exception chain. This ensures that | |
5575 | the caller doesn't stumble along blindly assuming that the | |
5576 | function succeeded. The CLI doesn't have this problem but other | |
5577 | UI's, such as MI do. | |
36918e70 AC |
5578 | |
5579 | FIXME: cagney/2002-05-19: Instead of re-throwing the exception, | |
5580 | this function should return an error indication letting the | |
ce2826aa | 5581 | caller restore the previous state. Unfortunately the command |
36918e70 AC |
5582 | ``target remote'' is directly wired to this function making that |
5583 | impossible. On a positive note, the CLI side of this problem has | |
5584 | been fixed - the function set_cmd_context() makes it possible for | |
5585 | all the ``target ....'' commands to share a common callback | |
5586 | function. See cli-dump.c. */ | |
109c3e39 | 5587 | { |
2d717e4f | 5588 | |
a70b8144 | 5589 | try |
04bd08de | 5590 | { |
6b8edb51 | 5591 | remote->start_remote (from_tty, extended_p); |
04bd08de | 5592 | } |
230d2906 | 5593 | catch (const gdb_exception &ex) |
109c3e39 | 5594 | { |
c8d104ad PA |
5595 | /* Pop the partially set up target - unless something else did |
5596 | already before throwing the exception. */ | |
6b8edb51 | 5597 | if (ex.error != TARGET_CLOSE_ERROR) |
78a095c3 | 5598 | remote_unpush_target (); |
eedc3f4f | 5599 | throw; |
109c3e39 AC |
5600 | } |
5601 | } | |
c906108c | 5602 | |
6b8edb51 | 5603 | remote_btrace_reset (rs); |
f4abbc16 | 5604 | |
c6ebd6cf | 5605 | if (target_async_permitted) |
6b8edb51 | 5606 | rs->wait_forever_enabled_p = 1; |
43ff13b4 JM |
5607 | } |
5608 | ||
de0d863e DB |
5609 | /* Detach the specified process. */ |
5610 | ||
6b8edb51 PA |
5611 | void |
5612 | remote_target::remote_detach_pid (int pid) | |
de0d863e DB |
5613 | { |
5614 | struct remote_state *rs = get_remote_state (); | |
5615 | ||
4c7333b3 PA |
5616 | /* This should not be necessary, but the handling for D;PID in |
5617 | GDBserver versions prior to 8.2 incorrectly assumes that the | |
5618 | selected process points to the same process we're detaching, | |
5619 | leading to misbehavior (and possibly GDBserver crashing) when it | |
5620 | does not. Since it's easy and cheap, work around it by forcing | |
5621 | GDBserver to select GDB's current process. */ | |
5622 | set_general_process (); | |
5623 | ||
de0d863e | 5624 | if (remote_multi_process_p (rs)) |
8d64371b | 5625 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "D;%x", pid); |
de0d863e | 5626 | else |
8d64371b | 5627 | strcpy (rs->buf.data (), "D"); |
de0d863e DB |
5628 | |
5629 | putpkt (rs->buf); | |
8d64371b | 5630 | getpkt (&rs->buf, 0); |
de0d863e DB |
5631 | |
5632 | if (rs->buf[0] == 'O' && rs->buf[1] == 'K') | |
5633 | ; | |
5634 | else if (rs->buf[0] == '\0') | |
5635 | error (_("Remote doesn't know how to detach")); | |
5636 | else | |
5637 | error (_("Can't detach process.")); | |
5638 | } | |
5639 | ||
5640 | /* This detaches a program to which we previously attached, using | |
5641 | inferior_ptid to identify the process. After this is done, GDB | |
5642 | can be used to debug some other program. We better not have left | |
5643 | any breakpoints in the target program or it'll die when it hits | |
5644 | one. */ | |
c906108c | 5645 | |
6b8edb51 | 5646 | void |
00431a78 | 5647 | remote_target::remote_detach_1 (inferior *inf, int from_tty) |
c906108c | 5648 | { |
e99b03dc | 5649 | int pid = inferior_ptid.pid (); |
d01949b6 | 5650 | struct remote_state *rs = get_remote_state (); |
de0d863e | 5651 | int is_fork_parent; |
c906108c | 5652 | |
2d717e4f DJ |
5653 | if (!target_has_execution) |
5654 | error (_("No process to detach from.")); | |
5655 | ||
0f48b757 | 5656 | target_announce_detach (from_tty); |
7cee1e54 | 5657 | |
c906108c | 5658 | /* Tell the remote target to detach. */ |
de0d863e | 5659 | remote_detach_pid (pid); |
82f73884 | 5660 | |
8020350c DB |
5661 | /* Exit only if this is the only active inferior. */ |
5662 | if (from_tty && !rs->extended && number_of_live_inferiors () == 1) | |
7cee1e54 | 5663 | puts_filtered (_("Ending remote debugging.\n")); |
82f73884 | 5664 | |
00431a78 PA |
5665 | struct thread_info *tp = find_thread_ptid (inferior_ptid); |
5666 | ||
de0d863e DB |
5667 | /* Check to see if we are detaching a fork parent. Note that if we |
5668 | are detaching a fork child, tp == NULL. */ | |
5669 | is_fork_parent = (tp != NULL | |
5670 | && tp->pending_follow.kind == TARGET_WAITKIND_FORKED); | |
5671 | ||
5672 | /* If doing detach-on-fork, we don't mourn, because that will delete | |
5673 | breakpoints that should be available for the followed inferior. */ | |
5674 | if (!is_fork_parent) | |
f67c0c91 | 5675 | { |
249b5733 PA |
5676 | /* Save the pid as a string before mourning, since that will |
5677 | unpush the remote target, and we need the string after. */ | |
f2907e49 | 5678 | std::string infpid = target_pid_to_str (ptid_t (pid)); |
f67c0c91 SDJ |
5679 | |
5680 | target_mourn_inferior (inferior_ptid); | |
5681 | if (print_inferior_events) | |
5682 | printf_unfiltered (_("[Inferior %d (%s) detached]\n"), | |
5683 | inf->num, infpid.c_str ()); | |
5684 | } | |
de0d863e DB |
5685 | else |
5686 | { | |
5687 | inferior_ptid = null_ptid; | |
00431a78 | 5688 | detach_inferior (current_inferior ()); |
de0d863e | 5689 | } |
2d717e4f DJ |
5690 | } |
5691 | ||
f6ac5f3d PA |
5692 | void |
5693 | remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5694 | { |
00431a78 | 5695 | remote_detach_1 (inf, from_tty); |
2d717e4f DJ |
5696 | } |
5697 | ||
f6ac5f3d PA |
5698 | void |
5699 | extended_remote_target::detach (inferior *inf, int from_tty) | |
2d717e4f | 5700 | { |
00431a78 | 5701 | remote_detach_1 (inf, from_tty); |
de0d863e DB |
5702 | } |
5703 | ||
5704 | /* Target follow-fork function for remote targets. On entry, and | |
5705 | at return, the current inferior is the fork parent. | |
5706 | ||
5707 | Note that although this is currently only used for extended-remote, | |
5708 | it is named remote_follow_fork in anticipation of using it for the | |
5709 | remote target as well. */ | |
5710 | ||
f6ac5f3d PA |
5711 | int |
5712 | remote_target::follow_fork (int follow_child, int detach_fork) | |
de0d863e DB |
5713 | { |
5714 | struct remote_state *rs = get_remote_state (); | |
c269dbdb | 5715 | enum target_waitkind kind = inferior_thread ()->pending_follow.kind; |
de0d863e | 5716 | |
c269dbdb DB |
5717 | if ((kind == TARGET_WAITKIND_FORKED && remote_fork_event_p (rs)) |
5718 | || (kind == TARGET_WAITKIND_VFORKED && remote_vfork_event_p (rs))) | |
de0d863e DB |
5719 | { |
5720 | /* When following the parent and detaching the child, we detach | |
5721 | the child here. For the case of following the child and | |
5722 | detaching the parent, the detach is done in the target- | |
5723 | independent follow fork code in infrun.c. We can't use | |
5724 | target_detach when detaching an unfollowed child because | |
5725 | the client side doesn't know anything about the child. */ | |
5726 | if (detach_fork && !follow_child) | |
5727 | { | |
5728 | /* Detach the fork child. */ | |
5729 | ptid_t child_ptid; | |
5730 | pid_t child_pid; | |
5731 | ||
5732 | child_ptid = inferior_thread ()->pending_follow.value.related_pid; | |
e99b03dc | 5733 | child_pid = child_ptid.pid (); |
de0d863e DB |
5734 | |
5735 | remote_detach_pid (child_pid); | |
de0d863e DB |
5736 | } |
5737 | } | |
5738 | return 0; | |
c906108c SS |
5739 | } |
5740 | ||
94585166 DB |
5741 | /* Target follow-exec function for remote targets. Save EXECD_PATHNAME |
5742 | in the program space of the new inferior. On entry and at return the | |
5743 | current inferior is the exec'ing inferior. INF is the new exec'd | |
5744 | inferior, which may be the same as the exec'ing inferior unless | |
5745 | follow-exec-mode is "new". */ | |
5746 | ||
f6ac5f3d | 5747 | void |
4ca51187 | 5748 | remote_target::follow_exec (struct inferior *inf, const char *execd_pathname) |
94585166 DB |
5749 | { |
5750 | /* We know that this is a target file name, so if it has the "target:" | |
5751 | prefix we strip it off before saving it in the program space. */ | |
5752 | if (is_target_filename (execd_pathname)) | |
5753 | execd_pathname += strlen (TARGET_SYSROOT_PREFIX); | |
5754 | ||
5755 | set_pspace_remote_exec_file (inf->pspace, execd_pathname); | |
5756 | } | |
5757 | ||
6ad8ae5c DJ |
5758 | /* Same as remote_detach, but don't send the "D" packet; just disconnect. */ |
5759 | ||
f6ac5f3d PA |
5760 | void |
5761 | remote_target::disconnect (const char *args, int from_tty) | |
43ff13b4 | 5762 | { |
43ff13b4 | 5763 | if (args) |
2d717e4f | 5764 | error (_("Argument given to \"disconnect\" when remotely debugging.")); |
43ff13b4 | 5765 | |
8020350c DB |
5766 | /* Make sure we unpush even the extended remote targets. Calling |
5767 | target_mourn_inferior won't unpush, and remote_mourn won't | |
5768 | unpush if there is more than one inferior left. */ | |
f6ac5f3d | 5769 | unpush_target (this); |
8020350c | 5770 | generic_mourn_inferior (); |
2d717e4f | 5771 | |
43ff13b4 JM |
5772 | if (from_tty) |
5773 | puts_filtered ("Ending remote debugging.\n"); | |
5774 | } | |
5775 | ||
2d717e4f DJ |
5776 | /* Attach to the process specified by ARGS. If FROM_TTY is non-zero, |
5777 | be chatty about it. */ | |
5778 | ||
f6ac5f3d PA |
5779 | void |
5780 | extended_remote_target::attach (const char *args, int from_tty) | |
2d717e4f DJ |
5781 | { |
5782 | struct remote_state *rs = get_remote_state (); | |
be86555c | 5783 | int pid; |
96ef3384 | 5784 | char *wait_status = NULL; |
2d717e4f | 5785 | |
74164c56 | 5786 | pid = parse_pid_to_attach (args); |
2d717e4f | 5787 | |
74164c56 JK |
5788 | /* Remote PID can be freely equal to getpid, do not check it here the same |
5789 | way as in other targets. */ | |
2d717e4f | 5790 | |
4082afcc | 5791 | if (packet_support (PACKET_vAttach) == PACKET_DISABLE) |
2d717e4f DJ |
5792 | error (_("This target does not support attaching to a process")); |
5793 | ||
7cee1e54 PA |
5794 | if (from_tty) |
5795 | { | |
5796 | char *exec_file = get_exec_file (0); | |
5797 | ||
5798 | if (exec_file) | |
5799 | printf_unfiltered (_("Attaching to program: %s, %s\n"), exec_file, | |
a068643d | 5800 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
5801 | else |
5802 | printf_unfiltered (_("Attaching to %s\n"), | |
a068643d | 5803 | target_pid_to_str (ptid_t (pid)).c_str ()); |
7cee1e54 PA |
5804 | } |
5805 | ||
8d64371b | 5806 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vAttach;%x", pid); |
2d717e4f | 5807 | putpkt (rs->buf); |
8d64371b | 5808 | getpkt (&rs->buf, 0); |
2d717e4f | 5809 | |
4082afcc PA |
5810 | switch (packet_ok (rs->buf, |
5811 | &remote_protocol_packets[PACKET_vAttach])) | |
2d717e4f | 5812 | { |
4082afcc | 5813 | case PACKET_OK: |
6efcd9a8 | 5814 | if (!target_is_non_stop_p ()) |
74531fed PA |
5815 | { |
5816 | /* Save the reply for later. */ | |
8d64371b TT |
5817 | wait_status = (char *) alloca (strlen (rs->buf.data ()) + 1); |
5818 | strcpy (wait_status, rs->buf.data ()); | |
74531fed | 5819 | } |
8d64371b | 5820 | else if (strcmp (rs->buf.data (), "OK") != 0) |
74531fed | 5821 | error (_("Attaching to %s failed with: %s"), |
a068643d | 5822 | target_pid_to_str (ptid_t (pid)).c_str (), |
8d64371b | 5823 | rs->buf.data ()); |
4082afcc PA |
5824 | break; |
5825 | case PACKET_UNKNOWN: | |
5826 | error (_("This target does not support attaching to a process")); | |
5827 | default: | |
50fa3001 SDJ |
5828 | error (_("Attaching to %s failed"), |
5829 | target_pid_to_str (ptid_t (pid)).c_str ()); | |
2d717e4f | 5830 | } |
2d717e4f | 5831 | |
9ab8741a | 5832 | set_current_inferior (remote_add_inferior (false, pid, 1, 0)); |
bad34192 | 5833 | |
f2907e49 | 5834 | inferior_ptid = ptid_t (pid); |
79d7f229 | 5835 | |
6efcd9a8 | 5836 | if (target_is_non_stop_p ()) |
bad34192 PA |
5837 | { |
5838 | struct thread_info *thread; | |
79d7f229 | 5839 | |
bad34192 | 5840 | /* Get list of threads. */ |
f6ac5f3d | 5841 | update_thread_list (); |
82f73884 | 5842 | |
00431a78 | 5843 | thread = first_thread_of_inferior (current_inferior ()); |
bad34192 PA |
5844 | if (thread) |
5845 | inferior_ptid = thread->ptid; | |
5846 | else | |
f2907e49 | 5847 | inferior_ptid = ptid_t (pid); |
bad34192 PA |
5848 | |
5849 | /* Invalidate our notion of the remote current thread. */ | |
47f8a51d | 5850 | record_currthread (rs, minus_one_ptid); |
bad34192 | 5851 | } |
74531fed | 5852 | else |
bad34192 PA |
5853 | { |
5854 | /* Now, if we have thread information, update inferior_ptid. */ | |
5855 | inferior_ptid = remote_current_thread (inferior_ptid); | |
5856 | ||
5857 | /* Add the main thread to the thread list. */ | |
00aecdcf PA |
5858 | thread_info *thr = add_thread_silent (inferior_ptid); |
5859 | /* Don't consider the thread stopped until we've processed the | |
5860 | saved stop reply. */ | |
5861 | set_executing (thr->ptid, true); | |
bad34192 | 5862 | } |
c0a2216e | 5863 | |
96ef3384 UW |
5864 | /* Next, if the target can specify a description, read it. We do |
5865 | this before anything involving memory or registers. */ | |
5866 | target_find_description (); | |
5867 | ||
6efcd9a8 | 5868 | if (!target_is_non_stop_p ()) |
74531fed PA |
5869 | { |
5870 | /* Use the previously fetched status. */ | |
5871 | gdb_assert (wait_status != NULL); | |
5872 | ||
5873 | if (target_can_async_p ()) | |
5874 | { | |
722247f1 | 5875 | struct notif_event *reply |
6b8edb51 | 5876 | = remote_notif_parse (this, ¬if_client_stop, wait_status); |
74531fed | 5877 | |
722247f1 | 5878 | push_stop_reply ((struct stop_reply *) reply); |
74531fed | 5879 | |
6a3753b3 | 5880 | target_async (1); |
74531fed PA |
5881 | } |
5882 | else | |
5883 | { | |
5884 | gdb_assert (wait_status != NULL); | |
8d64371b | 5885 | strcpy (rs->buf.data (), wait_status); |
74531fed PA |
5886 | rs->cached_wait_status = 1; |
5887 | } | |
5888 | } | |
5889 | else | |
5890 | gdb_assert (wait_status == NULL); | |
2d717e4f DJ |
5891 | } |
5892 | ||
b9c1d481 AS |
5893 | /* Implementation of the to_post_attach method. */ |
5894 | ||
f6ac5f3d PA |
5895 | void |
5896 | extended_remote_target::post_attach (int pid) | |
b9c1d481 | 5897 | { |
6efcd9a8 PA |
5898 | /* Get text, data & bss offsets. */ |
5899 | get_offsets (); | |
5900 | ||
b9c1d481 AS |
5901 | /* In certain cases GDB might not have had the chance to start |
5902 | symbol lookup up until now. This could happen if the debugged | |
5903 | binary is not using shared libraries, the vsyscall page is not | |
5904 | present (on Linux) and the binary itself hadn't changed since the | |
5905 | debugging process was started. */ | |
5906 | if (symfile_objfile != NULL) | |
5907 | remote_check_symbols(); | |
5908 | } | |
5909 | ||
c906108c | 5910 | \f |
506fb367 DJ |
5911 | /* Check for the availability of vCont. This function should also check |
5912 | the response. */ | |
c906108c | 5913 | |
6b8edb51 PA |
5914 | void |
5915 | remote_target::remote_vcont_probe () | |
c906108c | 5916 | { |
6b8edb51 | 5917 | remote_state *rs = get_remote_state (); |
2e9f7625 | 5918 | char *buf; |
6d820c5c | 5919 | |
8d64371b | 5920 | strcpy (rs->buf.data (), "vCont?"); |
2e9f7625 | 5921 | putpkt (rs->buf); |
8d64371b TT |
5922 | getpkt (&rs->buf, 0); |
5923 | buf = rs->buf.data (); | |
c906108c | 5924 | |
506fb367 | 5925 | /* Make sure that the features we assume are supported. */ |
61012eef | 5926 | if (startswith (buf, "vCont")) |
506fb367 DJ |
5927 | { |
5928 | char *p = &buf[5]; | |
750ce8d1 | 5929 | int support_c, support_C; |
506fb367 | 5930 | |
750ce8d1 YQ |
5931 | rs->supports_vCont.s = 0; |
5932 | rs->supports_vCont.S = 0; | |
506fb367 DJ |
5933 | support_c = 0; |
5934 | support_C = 0; | |
d458bd84 | 5935 | rs->supports_vCont.t = 0; |
c1e36e3e | 5936 | rs->supports_vCont.r = 0; |
506fb367 DJ |
5937 | while (p && *p == ';') |
5938 | { | |
5939 | p++; | |
5940 | if (*p == 's' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
750ce8d1 | 5941 | rs->supports_vCont.s = 1; |
506fb367 | 5942 | else if (*p == 'S' && (*(p + 1) == ';' || *(p + 1) == 0)) |
750ce8d1 | 5943 | rs->supports_vCont.S = 1; |
506fb367 DJ |
5944 | else if (*p == 'c' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5945 | support_c = 1; | |
5946 | else if (*p == 'C' && (*(p + 1) == ';' || *(p + 1) == 0)) | |
5947 | support_C = 1; | |
74531fed | 5948 | else if (*p == 't' && (*(p + 1) == ';' || *(p + 1) == 0)) |
d458bd84 | 5949 | rs->supports_vCont.t = 1; |
c1e36e3e PA |
5950 | else if (*p == 'r' && (*(p + 1) == ';' || *(p + 1) == 0)) |
5951 | rs->supports_vCont.r = 1; | |
506fb367 DJ |
5952 | |
5953 | p = strchr (p, ';'); | |
5954 | } | |
c906108c | 5955 | |
750ce8d1 YQ |
5956 | /* If c, and C are not all supported, we can't use vCont. Clearing |
5957 | BUF will make packet_ok disable the packet. */ | |
5958 | if (!support_c || !support_C) | |
506fb367 DJ |
5959 | buf[0] = 0; |
5960 | } | |
c906108c | 5961 | |
8d64371b | 5962 | packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCont]); |
506fb367 | 5963 | } |
c906108c | 5964 | |
0d8f58ca PA |
5965 | /* Helper function for building "vCont" resumptions. Write a |
5966 | resumption to P. ENDP points to one-passed-the-end of the buffer | |
5967 | we're allowed to write to. Returns BUF+CHARACTERS_WRITTEN. The | |
5968 | thread to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
5969 | resumed thread should be single-stepped and/or signalled. If PTID | |
5970 | equals minus_one_ptid, then all threads are resumed; if PTID | |
5971 | represents a process, then all threads of the process are resumed; | |
5972 | the thread to be stepped and/or signalled is given in the global | |
5973 | INFERIOR_PTID. */ | |
5974 | ||
6b8edb51 PA |
5975 | char * |
5976 | remote_target::append_resumption (char *p, char *endp, | |
5977 | ptid_t ptid, int step, gdb_signal siggnal) | |
0d8f58ca PA |
5978 | { |
5979 | struct remote_state *rs = get_remote_state (); | |
5980 | ||
a493e3e2 | 5981 | if (step && siggnal != GDB_SIGNAL_0) |
0d8f58ca | 5982 | p += xsnprintf (p, endp - p, ";S%02x", siggnal); |
c1e36e3e PA |
5983 | else if (step |
5984 | /* GDB is willing to range step. */ | |
5985 | && use_range_stepping | |
5986 | /* Target supports range stepping. */ | |
5987 | && rs->supports_vCont.r | |
5988 | /* We don't currently support range stepping multiple | |
5989 | threads with a wildcard (though the protocol allows it, | |
5990 | so stubs shouldn't make an active effort to forbid | |
5991 | it). */ | |
0e998d96 | 5992 | && !(remote_multi_process_p (rs) && ptid.is_pid ())) |
c1e36e3e PA |
5993 | { |
5994 | struct thread_info *tp; | |
5995 | ||
d7e15655 | 5996 | if (ptid == minus_one_ptid) |
c1e36e3e PA |
5997 | { |
5998 | /* If we don't know about the target thread's tid, then | |
5999 | we're resuming magic_null_ptid (see caller). */ | |
6000 | tp = find_thread_ptid (magic_null_ptid); | |
6001 | } | |
6002 | else | |
6003 | tp = find_thread_ptid (ptid); | |
6004 | gdb_assert (tp != NULL); | |
6005 | ||
6006 | if (tp->control.may_range_step) | |
6007 | { | |
6008 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; | |
6009 | ||
6010 | p += xsnprintf (p, endp - p, ";r%s,%s", | |
6011 | phex_nz (tp->control.step_range_start, | |
6012 | addr_size), | |
6013 | phex_nz (tp->control.step_range_end, | |
6014 | addr_size)); | |
6015 | } | |
6016 | else | |
6017 | p += xsnprintf (p, endp - p, ";s"); | |
6018 | } | |
0d8f58ca PA |
6019 | else if (step) |
6020 | p += xsnprintf (p, endp - p, ";s"); | |
a493e3e2 | 6021 | else if (siggnal != GDB_SIGNAL_0) |
0d8f58ca PA |
6022 | p += xsnprintf (p, endp - p, ";C%02x", siggnal); |
6023 | else | |
6024 | p += xsnprintf (p, endp - p, ";c"); | |
6025 | ||
0e998d96 | 6026 | if (remote_multi_process_p (rs) && ptid.is_pid ()) |
0d8f58ca PA |
6027 | { |
6028 | ptid_t nptid; | |
6029 | ||
6030 | /* All (-1) threads of process. */ | |
e99b03dc | 6031 | nptid = ptid_t (ptid.pid (), -1, 0); |
0d8f58ca PA |
6032 | |
6033 | p += xsnprintf (p, endp - p, ":"); | |
6034 | p = write_ptid (p, endp, nptid); | |
6035 | } | |
d7e15655 | 6036 | else if (ptid != minus_one_ptid) |
0d8f58ca PA |
6037 | { |
6038 | p += xsnprintf (p, endp - p, ":"); | |
6039 | p = write_ptid (p, endp, ptid); | |
6040 | } | |
6041 | ||
6042 | return p; | |
6043 | } | |
6044 | ||
799a2abe PA |
6045 | /* Clear the thread's private info on resume. */ |
6046 | ||
6047 | static void | |
6048 | resume_clear_thread_private_info (struct thread_info *thread) | |
6049 | { | |
6050 | if (thread->priv != NULL) | |
6051 | { | |
7aabaf9d SM |
6052 | remote_thread_info *priv = get_remote_thread_info (thread); |
6053 | ||
6054 | priv->stop_reason = TARGET_STOPPED_BY_NO_REASON; | |
6055 | priv->watch_data_address = 0; | |
799a2abe PA |
6056 | } |
6057 | } | |
6058 | ||
e5ef252a PA |
6059 | /* Append a vCont continue-with-signal action for threads that have a |
6060 | non-zero stop signal. */ | |
6061 | ||
6b8edb51 PA |
6062 | char * |
6063 | remote_target::append_pending_thread_resumptions (char *p, char *endp, | |
6064 | ptid_t ptid) | |
e5ef252a | 6065 | { |
08036331 PA |
6066 | for (thread_info *thread : all_non_exited_threads (ptid)) |
6067 | if (inferior_ptid != thread->ptid | |
70509625 | 6068 | && thread->suspend.stop_signal != GDB_SIGNAL_0) |
e5ef252a PA |
6069 | { |
6070 | p = append_resumption (p, endp, thread->ptid, | |
6071 | 0, thread->suspend.stop_signal); | |
6072 | thread->suspend.stop_signal = GDB_SIGNAL_0; | |
799a2abe | 6073 | resume_clear_thread_private_info (thread); |
e5ef252a PA |
6074 | } |
6075 | ||
6076 | return p; | |
6077 | } | |
6078 | ||
7b68ffbb PA |
6079 | /* Set the target running, using the packets that use Hc |
6080 | (c/s/C/S). */ | |
6081 | ||
6b8edb51 PA |
6082 | void |
6083 | remote_target::remote_resume_with_hc (ptid_t ptid, int step, | |
6084 | gdb_signal siggnal) | |
7b68ffbb PA |
6085 | { |
6086 | struct remote_state *rs = get_remote_state (); | |
7b68ffbb PA |
6087 | char *buf; |
6088 | ||
6089 | rs->last_sent_signal = siggnal; | |
6090 | rs->last_sent_step = step; | |
6091 | ||
6092 | /* The c/s/C/S resume packets use Hc, so set the continue | |
6093 | thread. */ | |
d7e15655 | 6094 | if (ptid == minus_one_ptid) |
7b68ffbb PA |
6095 | set_continue_thread (any_thread_ptid); |
6096 | else | |
6097 | set_continue_thread (ptid); | |
6098 | ||
08036331 | 6099 | for (thread_info *thread : all_non_exited_threads ()) |
7b68ffbb PA |
6100 | resume_clear_thread_private_info (thread); |
6101 | ||
8d64371b | 6102 | buf = rs->buf.data (); |
6b8edb51 | 6103 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6104 | { |
6105 | /* We don't pass signals to the target in reverse exec mode. */ | |
6106 | if (info_verbose && siggnal != GDB_SIGNAL_0) | |
6107 | warning (_(" - Can't pass signal %d to target in reverse: ignored."), | |
6108 | siggnal); | |
6109 | ||
6110 | if (step && packet_support (PACKET_bs) == PACKET_DISABLE) | |
6111 | error (_("Remote reverse-step not supported.")); | |
6112 | if (!step && packet_support (PACKET_bc) == PACKET_DISABLE) | |
6113 | error (_("Remote reverse-continue not supported.")); | |
6114 | ||
6115 | strcpy (buf, step ? "bs" : "bc"); | |
6116 | } | |
6117 | else if (siggnal != GDB_SIGNAL_0) | |
6118 | { | |
6119 | buf[0] = step ? 'S' : 'C'; | |
6120 | buf[1] = tohex (((int) siggnal >> 4) & 0xf); | |
6121 | buf[2] = tohex (((int) siggnal) & 0xf); | |
6122 | buf[3] = '\0'; | |
6123 | } | |
6124 | else | |
6125 | strcpy (buf, step ? "s" : "c"); | |
6126 | ||
6127 | putpkt (buf); | |
6128 | } | |
6129 | ||
506fb367 DJ |
6130 | /* Resume the remote inferior by using a "vCont" packet. The thread |
6131 | to be resumed is PTID; STEP and SIGGNAL indicate whether the | |
79d7f229 PA |
6132 | resumed thread should be single-stepped and/or signalled. If PTID |
6133 | equals minus_one_ptid, then all threads are resumed; the thread to | |
6134 | be stepped and/or signalled is given in the global INFERIOR_PTID. | |
6135 | This function returns non-zero iff it resumes the inferior. | |
44eaed12 | 6136 | |
7b68ffbb PA |
6137 | This function issues a strict subset of all possible vCont commands |
6138 | at the moment. */ | |
44eaed12 | 6139 | |
6b8edb51 PA |
6140 | int |
6141 | remote_target::remote_resume_with_vcont (ptid_t ptid, int step, | |
6142 | enum gdb_signal siggnal) | |
506fb367 DJ |
6143 | { |
6144 | struct remote_state *rs = get_remote_state (); | |
82f73884 PA |
6145 | char *p; |
6146 | char *endp; | |
44eaed12 | 6147 | |
7b68ffbb | 6148 | /* No reverse execution actions defined for vCont. */ |
6b8edb51 | 6149 | if (::execution_direction == EXEC_REVERSE) |
7b68ffbb PA |
6150 | return 0; |
6151 | ||
4082afcc | 6152 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6153 | remote_vcont_probe (); |
44eaed12 | 6154 | |
4082afcc | 6155 | if (packet_support (PACKET_vCont) == PACKET_DISABLE) |
6d820c5c | 6156 | return 0; |
44eaed12 | 6157 | |
8d64371b TT |
6158 | p = rs->buf.data (); |
6159 | endp = p + get_remote_packet_size (); | |
82f73884 | 6160 | |
506fb367 DJ |
6161 | /* If we could generate a wider range of packets, we'd have to worry |
6162 | about overflowing BUF. Should there be a generic | |
6163 | "multi-part-packet" packet? */ | |
6164 | ||
0d8f58ca PA |
6165 | p += xsnprintf (p, endp - p, "vCont"); |
6166 | ||
d7e15655 | 6167 | if (ptid == magic_null_ptid) |
c906108c | 6168 | { |
79d7f229 PA |
6169 | /* MAGIC_NULL_PTID means that we don't have any active threads, |
6170 | so we don't have any TID numbers the inferior will | |
6171 | understand. Make sure to only send forms that do not specify | |
6172 | a TID. */ | |
a9cbf802 | 6173 | append_resumption (p, endp, minus_one_ptid, step, siggnal); |
506fb367 | 6174 | } |
d7e15655 | 6175 | else if (ptid == minus_one_ptid || ptid.is_pid ()) |
506fb367 | 6176 | { |
0d8f58ca PA |
6177 | /* Resume all threads (of all processes, or of a single |
6178 | process), with preference for INFERIOR_PTID. This assumes | |
6179 | inferior_ptid belongs to the set of all threads we are about | |
6180 | to resume. */ | |
a493e3e2 | 6181 | if (step || siggnal != GDB_SIGNAL_0) |
82f73884 | 6182 | { |
0d8f58ca PA |
6183 | /* Step inferior_ptid, with or without signal. */ |
6184 | p = append_resumption (p, endp, inferior_ptid, step, siggnal); | |
82f73884 | 6185 | } |
0d8f58ca | 6186 | |
e5ef252a PA |
6187 | /* Also pass down any pending signaled resumption for other |
6188 | threads not the current. */ | |
6189 | p = append_pending_thread_resumptions (p, endp, ptid); | |
6190 | ||
0d8f58ca | 6191 | /* And continue others without a signal. */ |
a493e3e2 | 6192 | append_resumption (p, endp, ptid, /*step=*/ 0, GDB_SIGNAL_0); |
c906108c SS |
6193 | } |
6194 | else | |
506fb367 DJ |
6195 | { |
6196 | /* Scheduler locking; resume only PTID. */ | |
a9cbf802 | 6197 | append_resumption (p, endp, ptid, step, siggnal); |
506fb367 | 6198 | } |
c906108c | 6199 | |
8d64371b | 6200 | gdb_assert (strlen (rs->buf.data ()) < get_remote_packet_size ()); |
82f73884 | 6201 | putpkt (rs->buf); |
506fb367 | 6202 | |
6efcd9a8 | 6203 | if (target_is_non_stop_p ()) |
74531fed PA |
6204 | { |
6205 | /* In non-stop, the stub replies to vCont with "OK". The stop | |
6206 | reply will be reported asynchronously by means of a `%Stop' | |
6207 | notification. */ | |
8d64371b TT |
6208 | getpkt (&rs->buf, 0); |
6209 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6210 | error (_("Unexpected vCont reply in non-stop mode: %s"), | |
6211 | rs->buf.data ()); | |
74531fed PA |
6212 | } |
6213 | ||
506fb367 | 6214 | return 1; |
c906108c | 6215 | } |
43ff13b4 | 6216 | |
506fb367 DJ |
6217 | /* Tell the remote machine to resume. */ |
6218 | ||
f6ac5f3d PA |
6219 | void |
6220 | remote_target::resume (ptid_t ptid, int step, enum gdb_signal siggnal) | |
43ff13b4 | 6221 | { |
d01949b6 | 6222 | struct remote_state *rs = get_remote_state (); |
43ff13b4 | 6223 | |
85ad3aaf PA |
6224 | /* When connected in non-stop mode, the core resumes threads |
6225 | individually. Resuming remote threads directly in target_resume | |
6226 | would thus result in sending one packet per thread. Instead, to | |
6227 | minimize roundtrip latency, here we just store the resume | |
6228 | request; the actual remote resumption will be done in | |
6229 | target_commit_resume / remote_commit_resume, where we'll be able | |
6230 | to do vCont action coalescing. */ | |
f6ac5f3d | 6231 | if (target_is_non_stop_p () && ::execution_direction != EXEC_REVERSE) |
85ad3aaf | 6232 | { |
7aabaf9d | 6233 | remote_thread_info *remote_thr; |
85ad3aaf | 6234 | |
d7e15655 | 6235 | if (minus_one_ptid == ptid || ptid.is_pid ()) |
7aabaf9d | 6236 | remote_thr = get_remote_thread_info (inferior_ptid); |
85ad3aaf | 6237 | else |
7aabaf9d SM |
6238 | remote_thr = get_remote_thread_info (ptid); |
6239 | ||
85ad3aaf PA |
6240 | remote_thr->last_resume_step = step; |
6241 | remote_thr->last_resume_sig = siggnal; | |
6242 | return; | |
6243 | } | |
6244 | ||
722247f1 YQ |
6245 | /* In all-stop, we can't mark REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN |
6246 | (explained in remote-notif.c:handle_notification) so | |
6247 | remote_notif_process is not called. We need find a place where | |
6248 | it is safe to start a 'vNotif' sequence. It is good to do it | |
6249 | before resuming inferior, because inferior was stopped and no RSP | |
6250 | traffic at that moment. */ | |
6efcd9a8 | 6251 | if (!target_is_non_stop_p ()) |
5965e028 | 6252 | remote_notif_process (rs->notif_state, ¬if_client_stop); |
722247f1 | 6253 | |
f6ac5f3d | 6254 | rs->last_resume_exec_dir = ::execution_direction; |
3a00c802 | 6255 | |
7b68ffbb PA |
6256 | /* Prefer vCont, and fallback to s/c/S/C, which use Hc. */ |
6257 | if (!remote_resume_with_vcont (ptid, step, siggnal)) | |
6b8edb51 | 6258 | remote_resume_with_hc (ptid, step, siggnal); |
43ff13b4 | 6259 | |
2acceee2 | 6260 | /* We are about to start executing the inferior, let's register it |
0df8b418 MS |
6261 | with the event loop. NOTE: this is the one place where all the |
6262 | execution commands end up. We could alternatively do this in each | |
23860348 | 6263 | of the execution commands in infcmd.c. */ |
2acceee2 JM |
6264 | /* FIXME: ezannoni 1999-09-28: We may need to move this out of here |
6265 | into infcmd.c in order to allow inferior function calls to work | |
23860348 | 6266 | NOT asynchronously. */ |
362646f5 | 6267 | if (target_can_async_p ()) |
6a3753b3 | 6268 | target_async (1); |
e24a49d8 PA |
6269 | |
6270 | /* We've just told the target to resume. The remote server will | |
6271 | wait for the inferior to stop, and then send a stop reply. In | |
6272 | the mean time, we can't start another command/query ourselves | |
74531fed PA |
6273 | because the stub wouldn't be ready to process it. This applies |
6274 | only to the base all-stop protocol, however. In non-stop (which | |
6275 | only supports vCont), the stub replies with an "OK", and is | |
6276 | immediate able to process further serial input. */ | |
6efcd9a8 | 6277 | if (!target_is_non_stop_p ()) |
74531fed | 6278 | rs->waiting_for_stop_reply = 1; |
43ff13b4 | 6279 | } |
85ad3aaf | 6280 | |
85ad3aaf PA |
6281 | static int is_pending_fork_parent_thread (struct thread_info *thread); |
6282 | ||
6283 | /* Private per-inferior info for target remote processes. */ | |
6284 | ||
089354bb | 6285 | struct remote_inferior : public private_inferior |
85ad3aaf PA |
6286 | { |
6287 | /* Whether we can send a wildcard vCont for this process. */ | |
089354bb | 6288 | bool may_wildcard_vcont = true; |
85ad3aaf PA |
6289 | }; |
6290 | ||
089354bb SM |
6291 | /* Get the remote private inferior data associated to INF. */ |
6292 | ||
6293 | static remote_inferior * | |
6294 | get_remote_inferior (inferior *inf) | |
6295 | { | |
6296 | if (inf->priv == NULL) | |
6297 | inf->priv.reset (new remote_inferior); | |
6298 | ||
6299 | return static_cast<remote_inferior *> (inf->priv.get ()); | |
6300 | } | |
6301 | ||
f5db4863 | 6302 | /* Class used to track the construction of a vCont packet in the |
85ad3aaf PA |
6303 | outgoing packet buffer. This is used to send multiple vCont |
6304 | packets if we have more actions than would fit a single packet. */ | |
6305 | ||
f5db4863 | 6306 | class vcont_builder |
85ad3aaf | 6307 | { |
f5db4863 | 6308 | public: |
6b8edb51 PA |
6309 | explicit vcont_builder (remote_target *remote) |
6310 | : m_remote (remote) | |
f5db4863 PA |
6311 | { |
6312 | restart (); | |
6313 | } | |
6314 | ||
6315 | void flush (); | |
6316 | void push_action (ptid_t ptid, bool step, gdb_signal siggnal); | |
6317 | ||
6318 | private: | |
6319 | void restart (); | |
6320 | ||
6b8edb51 PA |
6321 | /* The remote target. */ |
6322 | remote_target *m_remote; | |
6323 | ||
85ad3aaf PA |
6324 | /* Pointer to the first action. P points here if no action has been |
6325 | appended yet. */ | |
f5db4863 | 6326 | char *m_first_action; |
85ad3aaf PA |
6327 | |
6328 | /* Where the next action will be appended. */ | |
f5db4863 | 6329 | char *m_p; |
85ad3aaf PA |
6330 | |
6331 | /* The end of the buffer. Must never write past this. */ | |
f5db4863 | 6332 | char *m_endp; |
85ad3aaf PA |
6333 | }; |
6334 | ||
6335 | /* Prepare the outgoing buffer for a new vCont packet. */ | |
6336 | ||
f5db4863 PA |
6337 | void |
6338 | vcont_builder::restart () | |
85ad3aaf | 6339 | { |
6b8edb51 | 6340 | struct remote_state *rs = m_remote->get_remote_state (); |
85ad3aaf | 6341 | |
8d64371b TT |
6342 | m_p = rs->buf.data (); |
6343 | m_endp = m_p + m_remote->get_remote_packet_size (); | |
f5db4863 PA |
6344 | m_p += xsnprintf (m_p, m_endp - m_p, "vCont"); |
6345 | m_first_action = m_p; | |
85ad3aaf PA |
6346 | } |
6347 | ||
6348 | /* If the vCont packet being built has any action, send it to the | |
6349 | remote end. */ | |
6350 | ||
f5db4863 PA |
6351 | void |
6352 | vcont_builder::flush () | |
85ad3aaf PA |
6353 | { |
6354 | struct remote_state *rs; | |
6355 | ||
f5db4863 | 6356 | if (m_p == m_first_action) |
85ad3aaf PA |
6357 | return; |
6358 | ||
6b8edb51 PA |
6359 | rs = m_remote->get_remote_state (); |
6360 | m_remote->putpkt (rs->buf); | |
8d64371b TT |
6361 | m_remote->getpkt (&rs->buf, 0); |
6362 | if (strcmp (rs->buf.data (), "OK") != 0) | |
6363 | error (_("Unexpected vCont reply in non-stop mode: %s"), rs->buf.data ()); | |
85ad3aaf PA |
6364 | } |
6365 | ||
6366 | /* The largest action is range-stepping, with its two addresses. This | |
6367 | is more than sufficient. If a new, bigger action is created, it'll | |
6368 | quickly trigger a failed assertion in append_resumption (and we'll | |
6369 | just bump this). */ | |
6370 | #define MAX_ACTION_SIZE 200 | |
6371 | ||
6372 | /* Append a new vCont action in the outgoing packet being built. If | |
6373 | the action doesn't fit the packet along with previous actions, push | |
6374 | what we've got so far to the remote end and start over a new vCont | |
6375 | packet (with the new action). */ | |
6376 | ||
f5db4863 PA |
6377 | void |
6378 | vcont_builder::push_action (ptid_t ptid, bool step, gdb_signal siggnal) | |
85ad3aaf PA |
6379 | { |
6380 | char buf[MAX_ACTION_SIZE + 1]; | |
85ad3aaf | 6381 | |
6b8edb51 PA |
6382 | char *endp = m_remote->append_resumption (buf, buf + sizeof (buf), |
6383 | ptid, step, siggnal); | |
85ad3aaf PA |
6384 | |
6385 | /* Check whether this new action would fit in the vCont packet along | |
6386 | with previous actions. If not, send what we've got so far and | |
6387 | start a new vCont packet. */ | |
f5db4863 PA |
6388 | size_t rsize = endp - buf; |
6389 | if (rsize > m_endp - m_p) | |
85ad3aaf | 6390 | { |
f5db4863 PA |
6391 | flush (); |
6392 | restart (); | |
85ad3aaf PA |
6393 | |
6394 | /* Should now fit. */ | |
f5db4863 | 6395 | gdb_assert (rsize <= m_endp - m_p); |
85ad3aaf PA |
6396 | } |
6397 | ||
f5db4863 PA |
6398 | memcpy (m_p, buf, rsize); |
6399 | m_p += rsize; | |
6400 | *m_p = '\0'; | |
85ad3aaf PA |
6401 | } |
6402 | ||
6403 | /* to_commit_resume implementation. */ | |
6404 | ||
f6ac5f3d PA |
6405 | void |
6406 | remote_target::commit_resume () | |
85ad3aaf | 6407 | { |
85ad3aaf PA |
6408 | int any_process_wildcard; |
6409 | int may_global_wildcard_vcont; | |
85ad3aaf PA |
6410 | |
6411 | /* If connected in all-stop mode, we'd send the remote resume | |
6412 | request directly from remote_resume. Likewise if | |
6413 | reverse-debugging, as there are no defined vCont actions for | |
6414 | reverse execution. */ | |
f6ac5f3d | 6415 | if (!target_is_non_stop_p () || ::execution_direction == EXEC_REVERSE) |
85ad3aaf PA |
6416 | return; |
6417 | ||
6418 | /* Try to send wildcard actions ("vCont;c" or "vCont;c:pPID.-1") | |
6419 | instead of resuming all threads of each process individually. | |
6420 | However, if any thread of a process must remain halted, we can't | |
6421 | send wildcard resumes and must send one action per thread. | |
6422 | ||
6423 | Care must be taken to not resume threads/processes the server | |
6424 | side already told us are stopped, but the core doesn't know about | |
6425 | yet, because the events are still in the vStopped notification | |
6426 | queue. For example: | |
6427 | ||
6428 | #1 => vCont s:p1.1;c | |
6429 | #2 <= OK | |
6430 | #3 <= %Stopped T05 p1.1 | |
6431 | #4 => vStopped | |
6432 | #5 <= T05 p1.2 | |
6433 | #6 => vStopped | |
6434 | #7 <= OK | |
6435 | #8 (infrun handles the stop for p1.1 and continues stepping) | |
6436 | #9 => vCont s:p1.1;c | |
6437 | ||
6438 | The last vCont above would resume thread p1.2 by mistake, because | |
6439 | the server has no idea that the event for p1.2 had not been | |
6440 | handled yet. | |
6441 | ||
6442 | The server side must similarly ignore resume actions for the | |
6443 | thread that has a pending %Stopped notification (and any other | |
6444 | threads with events pending), until GDB acks the notification | |
6445 | with vStopped. Otherwise, e.g., the following case is | |
6446 | mishandled: | |
6447 | ||
6448 | #1 => g (or any other packet) | |
6449 | #2 <= [registers] | |
6450 | #3 <= %Stopped T05 p1.2 | |
6451 | #4 => vCont s:p1.1;c | |
6452 | #5 <= OK | |
6453 | ||
6454 | Above, the server must not resume thread p1.2. GDB can't know | |
6455 | that p1.2 stopped until it acks the %Stopped notification, and | |
6456 | since from GDB's perspective all threads should be running, it | |
6457 | sends a "c" action. | |
6458 | ||
6459 | Finally, special care must also be given to handling fork/vfork | |
6460 | events. A (v)fork event actually tells us that two processes | |
6461 | stopped -- the parent and the child. Until we follow the fork, | |
6462 | we must not resume the child. Therefore, if we have a pending | |
6463 | fork follow, we must not send a global wildcard resume action | |
6464 | (vCont;c). We can still send process-wide wildcards though. */ | |
6465 | ||
6466 | /* Start by assuming a global wildcard (vCont;c) is possible. */ | |
6467 | may_global_wildcard_vcont = 1; | |
6468 | ||
6469 | /* And assume every process is individually wildcard-able too. */ | |
08036331 | 6470 | for (inferior *inf : all_non_exited_inferiors ()) |
85ad3aaf | 6471 | { |
089354bb SM |
6472 | remote_inferior *priv = get_remote_inferior (inf); |
6473 | ||
6474 | priv->may_wildcard_vcont = true; | |
85ad3aaf PA |
6475 | } |
6476 | ||
6477 | /* Check for any pending events (not reported or processed yet) and | |
6478 | disable process and global wildcard resumes appropriately. */ | |
6479 | check_pending_events_prevent_wildcard_vcont (&may_global_wildcard_vcont); | |
6480 | ||
08036331 | 6481 | for (thread_info *tp : all_non_exited_threads ()) |
85ad3aaf PA |
6482 | { |
6483 | /* If a thread of a process is not meant to be resumed, then we | |
6484 | can't wildcard that process. */ | |
6485 | if (!tp->executing) | |
6486 | { | |
089354bb | 6487 | get_remote_inferior (tp->inf)->may_wildcard_vcont = false; |
85ad3aaf PA |
6488 | |
6489 | /* And if we can't wildcard a process, we can't wildcard | |
6490 | everything either. */ | |
6491 | may_global_wildcard_vcont = 0; | |
6492 | continue; | |
6493 | } | |
6494 | ||
6495 | /* If a thread is the parent of an unfollowed fork, then we | |
6496 | can't do a global wildcard, as that would resume the fork | |
6497 | child. */ | |
6498 | if (is_pending_fork_parent_thread (tp)) | |
6499 | may_global_wildcard_vcont = 0; | |
6500 | } | |
6501 | ||
6502 | /* Now let's build the vCont packet(s). Actions must be appended | |
6503 | from narrower to wider scopes (thread -> process -> global). If | |
6504 | we end up with too many actions for a single packet vcont_builder | |
6505 | flushes the current vCont packet to the remote side and starts a | |
6506 | new one. */ | |
6b8edb51 | 6507 | struct vcont_builder vcont_builder (this); |
85ad3aaf PA |
6508 | |
6509 | /* Threads first. */ | |
08036331 | 6510 | for (thread_info *tp : all_non_exited_threads ()) |
85ad3aaf | 6511 | { |
7aabaf9d | 6512 | remote_thread_info *remote_thr = get_remote_thread_info (tp); |
85ad3aaf PA |
6513 | |
6514 | if (!tp->executing || remote_thr->vcont_resumed) | |
6515 | continue; | |
6516 | ||
6517 | gdb_assert (!thread_is_in_step_over_chain (tp)); | |
6518 | ||
6519 | if (!remote_thr->last_resume_step | |
6520 | && remote_thr->last_resume_sig == GDB_SIGNAL_0 | |
089354bb | 6521 | && get_remote_inferior (tp->inf)->may_wildcard_vcont) |
85ad3aaf PA |
6522 | { |
6523 | /* We'll send a wildcard resume instead. */ | |
6524 | remote_thr->vcont_resumed = 1; | |
6525 | continue; | |
6526 | } | |
6527 | ||
f5db4863 | 6528 | vcont_builder.push_action (tp->ptid, |
85ad3aaf PA |
6529 | remote_thr->last_resume_step, |
6530 | remote_thr->last_resume_sig); | |
6531 | remote_thr->vcont_resumed = 1; | |
6532 | } | |
6533 | ||
6534 | /* Now check whether we can send any process-wide wildcard. This is | |
6535 | to avoid sending a global wildcard in the case nothing is | |
6536 | supposed to be resumed. */ | |
6537 | any_process_wildcard = 0; | |
6538 | ||
08036331 | 6539 | for (inferior *inf : all_non_exited_inferiors ()) |
85ad3aaf | 6540 | { |
089354bb | 6541 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf PA |
6542 | { |
6543 | any_process_wildcard = 1; | |
6544 | break; | |
6545 | } | |
6546 | } | |
6547 | ||
6548 | if (any_process_wildcard) | |
6549 | { | |
6550 | /* If all processes are wildcard-able, then send a single "c" | |
6551 | action, otherwise, send an "all (-1) threads of process" | |
6552 | continue action for each running process, if any. */ | |
6553 | if (may_global_wildcard_vcont) | |
6554 | { | |
f5db4863 PA |
6555 | vcont_builder.push_action (minus_one_ptid, |
6556 | false, GDB_SIGNAL_0); | |
85ad3aaf PA |
6557 | } |
6558 | else | |
6559 | { | |
08036331 | 6560 | for (inferior *inf : all_non_exited_inferiors ()) |
85ad3aaf | 6561 | { |
089354bb | 6562 | if (get_remote_inferior (inf)->may_wildcard_vcont) |
85ad3aaf | 6563 | { |
f2907e49 | 6564 | vcont_builder.push_action (ptid_t (inf->pid), |
f5db4863 | 6565 | false, GDB_SIGNAL_0); |
85ad3aaf PA |
6566 | } |
6567 | } | |
6568 | } | |
6569 | } | |
6570 | ||
f5db4863 | 6571 | vcont_builder.flush (); |
85ad3aaf PA |
6572 | } |
6573 | ||
c906108c | 6574 | \f |
43ff13b4 | 6575 | |
74531fed PA |
6576 | /* Non-stop version of target_stop. Uses `vCont;t' to stop a remote |
6577 | thread, all threads of a remote process, or all threads of all | |
6578 | processes. */ | |
6579 | ||
6b8edb51 PA |
6580 | void |
6581 | remote_target::remote_stop_ns (ptid_t ptid) | |
74531fed PA |
6582 | { |
6583 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6584 | char *p = rs->buf.data (); |
6585 | char *endp = p + get_remote_packet_size (); | |
74531fed | 6586 | |
4082afcc | 6587 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) |
6b8edb51 | 6588 | remote_vcont_probe (); |
74531fed | 6589 | |
d458bd84 | 6590 | if (!rs->supports_vCont.t) |
74531fed PA |
6591 | error (_("Remote server does not support stopping threads")); |
6592 | ||
d7e15655 | 6593 | if (ptid == minus_one_ptid |
0e998d96 | 6594 | || (!remote_multi_process_p (rs) && ptid.is_pid ())) |
74531fed PA |
6595 | p += xsnprintf (p, endp - p, "vCont;t"); |
6596 | else | |
6597 | { | |
6598 | ptid_t nptid; | |
6599 | ||
74531fed PA |
6600 | p += xsnprintf (p, endp - p, "vCont;t:"); |
6601 | ||
0e998d96 | 6602 | if (ptid.is_pid ()) |
74531fed | 6603 | /* All (-1) threads of process. */ |
e99b03dc | 6604 | nptid = ptid_t (ptid.pid (), -1, 0); |
74531fed PA |
6605 | else |
6606 | { | |
6607 | /* Small optimization: if we already have a stop reply for | |
6608 | this thread, no use in telling the stub we want this | |
6609 | stopped. */ | |
6610 | if (peek_stop_reply (ptid)) | |
6611 | return; | |
6612 | ||
6613 | nptid = ptid; | |
6614 | } | |
6615 | ||
a9cbf802 | 6616 | write_ptid (p, endp, nptid); |
74531fed PA |
6617 | } |
6618 | ||
6619 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6620 | come in asynchronously by notification. */ | |
6621 | putpkt (rs->buf); | |
8d64371b TT |
6622 | getpkt (&rs->buf, 0); |
6623 | if (strcmp (rs->buf.data (), "OK") != 0) | |
a068643d | 6624 | error (_("Stopping %s failed: %s"), target_pid_to_str (ptid).c_str (), |
8d64371b | 6625 | rs->buf.data ()); |
74531fed PA |
6626 | } |
6627 | ||
bfedc46a PA |
6628 | /* All-stop version of target_interrupt. Sends a break or a ^C to |
6629 | interrupt the remote target. It is undefined which thread of which | |
6630 | process reports the interrupt. */ | |
74531fed | 6631 | |
6b8edb51 PA |
6632 | void |
6633 | remote_target::remote_interrupt_as () | |
74531fed PA |
6634 | { |
6635 | struct remote_state *rs = get_remote_state (); | |
6636 | ||
3a29589a DJ |
6637 | rs->ctrlc_pending_p = 1; |
6638 | ||
74531fed PA |
6639 | /* If the inferior is stopped already, but the core didn't know |
6640 | about it yet, just ignore the request. The cached wait status | |
6641 | will be collected in remote_wait. */ | |
6642 | if (rs->cached_wait_status) | |
6643 | return; | |
6644 | ||
9a7071a8 JB |
6645 | /* Send interrupt_sequence to remote target. */ |
6646 | send_interrupt_sequence (); | |
74531fed PA |
6647 | } |
6648 | ||
de979965 PA |
6649 | /* Non-stop version of target_interrupt. Uses `vCtrlC' to interrupt |
6650 | the remote target. It is undefined which thread of which process | |
e42de8c7 PA |
6651 | reports the interrupt. Throws an error if the packet is not |
6652 | supported by the server. */ | |
de979965 | 6653 | |
6b8edb51 PA |
6654 | void |
6655 | remote_target::remote_interrupt_ns () | |
de979965 PA |
6656 | { |
6657 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
6658 | char *p = rs->buf.data (); |
6659 | char *endp = p + get_remote_packet_size (); | |
de979965 PA |
6660 | |
6661 | xsnprintf (p, endp - p, "vCtrlC"); | |
6662 | ||
6663 | /* In non-stop, we get an immediate OK reply. The stop reply will | |
6664 | come in asynchronously by notification. */ | |
6665 | putpkt (rs->buf); | |
8d64371b | 6666 | getpkt (&rs->buf, 0); |
de979965 PA |
6667 | |
6668 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vCtrlC])) | |
6669 | { | |
6670 | case PACKET_OK: | |
6671 | break; | |
6672 | case PACKET_UNKNOWN: | |
e42de8c7 | 6673 | error (_("No support for interrupting the remote target.")); |
de979965 | 6674 | case PACKET_ERROR: |
8d64371b | 6675 | error (_("Interrupting target failed: %s"), rs->buf.data ()); |
de979965 | 6676 | } |
de979965 PA |
6677 | } |
6678 | ||
bfedc46a | 6679 | /* Implement the to_stop function for the remote targets. */ |
74531fed | 6680 | |
f6ac5f3d PA |
6681 | void |
6682 | remote_target::stop (ptid_t ptid) | |
c906108c | 6683 | { |
7a292a7a | 6684 | if (remote_debug) |
0f71a2f6 | 6685 | fprintf_unfiltered (gdb_stdlog, "remote_stop called\n"); |
c906108c | 6686 | |
6efcd9a8 | 6687 | if (target_is_non_stop_p ()) |
74531fed | 6688 | remote_stop_ns (ptid); |
c906108c | 6689 | else |
bfedc46a PA |
6690 | { |
6691 | /* We don't currently have a way to transparently pause the | |
6692 | remote target in all-stop mode. Interrupt it instead. */ | |
de979965 | 6693 | remote_interrupt_as (); |
bfedc46a PA |
6694 | } |
6695 | } | |
6696 | ||
6697 | /* Implement the to_interrupt function for the remote targets. */ | |
6698 | ||
f6ac5f3d PA |
6699 | void |
6700 | remote_target::interrupt () | |
bfedc46a PA |
6701 | { |
6702 | if (remote_debug) | |
6703 | fprintf_unfiltered (gdb_stdlog, "remote_interrupt called\n"); | |
6704 | ||
e42de8c7 PA |
6705 | if (target_is_non_stop_p ()) |
6706 | remote_interrupt_ns (); | |
bfedc46a | 6707 | else |
e42de8c7 | 6708 | remote_interrupt_as (); |
c906108c SS |
6709 | } |
6710 | ||
93692b58 PA |
6711 | /* Implement the to_pass_ctrlc function for the remote targets. */ |
6712 | ||
f6ac5f3d PA |
6713 | void |
6714 | remote_target::pass_ctrlc () | |
93692b58 PA |
6715 | { |
6716 | struct remote_state *rs = get_remote_state (); | |
6717 | ||
6718 | if (remote_debug) | |
6719 | fprintf_unfiltered (gdb_stdlog, "remote_pass_ctrlc called\n"); | |
6720 | ||
6721 | /* If we're starting up, we're not fully synced yet. Quit | |
6722 | immediately. */ | |
6723 | if (rs->starting_up) | |
6724 | quit (); | |
6725 | /* If ^C has already been sent once, offer to disconnect. */ | |
6726 | else if (rs->ctrlc_pending_p) | |
6727 | interrupt_query (); | |
6728 | else | |
e671cd59 | 6729 | target_interrupt (); |
93692b58 PA |
6730 | } |
6731 | ||
c906108c SS |
6732 | /* Ask the user what to do when an interrupt is received. */ |
6733 | ||
6b8edb51 PA |
6734 | void |
6735 | remote_target::interrupt_query () | |
c906108c | 6736 | { |
abc56d60 | 6737 | struct remote_state *rs = get_remote_state (); |
c906108c | 6738 | |
abc56d60 | 6739 | if (rs->waiting_for_stop_reply && rs->ctrlc_pending_p) |
74531fed | 6740 | { |
abc56d60 PA |
6741 | if (query (_("The target is not responding to interrupt requests.\n" |
6742 | "Stop debugging it? "))) | |
74531fed | 6743 | { |
78a095c3 | 6744 | remote_unpush_target (); |
abc56d60 | 6745 | throw_error (TARGET_CLOSE_ERROR, _("Disconnected from target.")); |
74531fed PA |
6746 | } |
6747 | } | |
abc56d60 PA |
6748 | else |
6749 | { | |
6750 | if (query (_("Interrupted while waiting for the program.\n" | |
6751 | "Give up waiting? "))) | |
6752 | quit (); | |
6753 | } | |
c906108c SS |
6754 | } |
6755 | ||
6426a772 JM |
6756 | /* Enable/disable target terminal ownership. Most targets can use |
6757 | terminal groups to control terminal ownership. Remote targets are | |
6758 | different in that explicit transfer of ownership to/from GDB/target | |
23860348 | 6759 | is required. */ |
6426a772 | 6760 | |
f6ac5f3d PA |
6761 | void |
6762 | remote_target::terminal_inferior () | |
6426a772 | 6763 | { |
6426a772 JM |
6764 | /* NOTE: At this point we could also register our selves as the |
6765 | recipient of all input. Any characters typed could then be | |
23860348 | 6766 | passed on down to the target. */ |
6426a772 JM |
6767 | } |
6768 | ||
f6ac5f3d PA |
6769 | void |
6770 | remote_target::terminal_ours () | |
6426a772 | 6771 | { |
6426a772 JM |
6772 | } |
6773 | ||
176a6961 | 6774 | static void |
05be00a8 | 6775 | remote_console_output (const char *msg) |
c906108c | 6776 | { |
05be00a8 | 6777 | const char *p; |
c906108c | 6778 | |
c5aa993b | 6779 | for (p = msg; p[0] && p[1]; p += 2) |
c906108c SS |
6780 | { |
6781 | char tb[2]; | |
6782 | char c = fromhex (p[0]) * 16 + fromhex (p[1]); | |
a744cf53 | 6783 | |
c906108c SS |
6784 | tb[0] = c; |
6785 | tb[1] = 0; | |
43ff13b4 | 6786 | fputs_unfiltered (tb, gdb_stdtarg); |
c906108c | 6787 | } |
00db5b94 PA |
6788 | gdb_flush (gdb_stdtarg); |
6789 | } | |
74531fed | 6790 | |
32603266 | 6791 | struct stop_reply : public notif_event |
74531fed | 6792 | { |
32603266 | 6793 | ~stop_reply (); |
74531fed | 6794 | |
722247f1 | 6795 | /* The identifier of the thread about this event */ |
74531fed PA |
6796 | ptid_t ptid; |
6797 | ||
340e3c99 | 6798 | /* The remote state this event is associated with. When the remote |
bcc75809 YQ |
6799 | connection, represented by a remote_state object, is closed, |
6800 | all the associated stop_reply events should be released. */ | |
6801 | struct remote_state *rs; | |
6802 | ||
74531fed PA |
6803 | struct target_waitstatus ws; |
6804 | ||
5cd63fda PA |
6805 | /* The architecture associated with the expedited registers. */ |
6806 | gdbarch *arch; | |
6807 | ||
15148d6a PA |
6808 | /* Expedited registers. This makes remote debugging a bit more |
6809 | efficient for those targets that provide critical registers as | |
6810 | part of their normal status mechanism (as another roundtrip to | |
6811 | fetch them is avoided). */ | |
32603266 | 6812 | std::vector<cached_reg_t> regcache; |
74531fed | 6813 | |
f7e6eed5 PA |
6814 | enum target_stop_reason stop_reason; |
6815 | ||
74531fed PA |
6816 | CORE_ADDR watch_data_address; |
6817 | ||
dc146f7c | 6818 | int core; |
32603266 | 6819 | }; |
c906108c | 6820 | |
221e1a37 PA |
6821 | /* Return the length of the stop reply queue. */ |
6822 | ||
6b8edb51 PA |
6823 | int |
6824 | remote_target::stop_reply_queue_length () | |
221e1a37 | 6825 | { |
6b8edb51 | 6826 | remote_state *rs = get_remote_state (); |
953edf2b | 6827 | return rs->stop_reply_queue.size (); |
221e1a37 PA |
6828 | } |
6829 | ||
6b8edb51 PA |
6830 | void |
6831 | remote_notif_stop_parse (remote_target *remote, | |
bb277751 | 6832 | struct notif_client *self, const char *buf, |
722247f1 YQ |
6833 | struct notif_event *event) |
6834 | { | |
6b8edb51 | 6835 | remote->remote_parse_stop_reply (buf, (struct stop_reply *) event); |
722247f1 YQ |
6836 | } |
6837 | ||
6838 | static void | |
6b8edb51 | 6839 | remote_notif_stop_ack (remote_target *remote, |
bb277751 | 6840 | struct notif_client *self, const char *buf, |
722247f1 YQ |
6841 | struct notif_event *event) |
6842 | { | |
6843 | struct stop_reply *stop_reply = (struct stop_reply *) event; | |
6844 | ||
6845 | /* acknowledge */ | |
6b8edb51 | 6846 | putpkt (remote, self->ack_command); |
722247f1 YQ |
6847 | |
6848 | if (stop_reply->ws.kind == TARGET_WAITKIND_IGNORE) | |
6b8edb51 | 6849 | { |
722247f1 YQ |
6850 | /* We got an unknown stop reply. */ |
6851 | error (_("Unknown stop reply")); | |
6b8edb51 | 6852 | } |
722247f1 | 6853 | |
6b8edb51 | 6854 | remote->push_stop_reply (stop_reply); |
722247f1 YQ |
6855 | } |
6856 | ||
6857 | static int | |
6b8edb51 PA |
6858 | remote_notif_stop_can_get_pending_events (remote_target *remote, |
6859 | struct notif_client *self) | |
722247f1 YQ |
6860 | { |
6861 | /* We can't get pending events in remote_notif_process for | |
6862 | notification stop, and we have to do this in remote_wait_ns | |
6863 | instead. If we fetch all queued events from stub, remote stub | |
6864 | may exit and we have no chance to process them back in | |
6865 | remote_wait_ns. */ | |
6b8edb51 PA |
6866 | remote_state *rs = remote->get_remote_state (); |
6867 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
722247f1 YQ |
6868 | return 0; |
6869 | } | |
6870 | ||
32603266 | 6871 | stop_reply::~stop_reply () |
722247f1 | 6872 | { |
32603266 TT |
6873 | for (cached_reg_t ® : regcache) |
6874 | xfree (reg.data); | |
722247f1 YQ |
6875 | } |
6876 | ||
32603266 TT |
6877 | static notif_event_up |
6878 | remote_notif_stop_alloc_reply () | |
722247f1 | 6879 | { |
32603266 | 6880 | return notif_event_up (new struct stop_reply ()); |
722247f1 YQ |
6881 | } |
6882 | ||
6883 | /* A client of notification Stop. */ | |
6884 | ||
6885 | struct notif_client notif_client_stop = | |
6886 | { | |
6887 | "Stop", | |
6888 | "vStopped", | |
6889 | remote_notif_stop_parse, | |
6890 | remote_notif_stop_ack, | |
6891 | remote_notif_stop_can_get_pending_events, | |
6892 | remote_notif_stop_alloc_reply, | |
f48ff2a7 | 6893 | REMOTE_NOTIF_STOP, |
722247f1 YQ |
6894 | }; |
6895 | ||
85ad3aaf | 6896 | /* Determine if THREAD_PTID is a pending fork parent thread. ARG contains |
cbb8991c DB |
6897 | the pid of the process that owns the threads we want to check, or |
6898 | -1 if we want to check all threads. */ | |
6899 | ||
6900 | static int | |
6901 | is_pending_fork_parent (struct target_waitstatus *ws, int event_pid, | |
6902 | ptid_t thread_ptid) | |
6903 | { | |
6904 | if (ws->kind == TARGET_WAITKIND_FORKED | |
6905 | || ws->kind == TARGET_WAITKIND_VFORKED) | |
6906 | { | |
e99b03dc | 6907 | if (event_pid == -1 || event_pid == thread_ptid.pid ()) |
cbb8991c DB |
6908 | return 1; |
6909 | } | |
6910 | ||
6911 | return 0; | |
6912 | } | |
6913 | ||
85ad3aaf PA |
6914 | /* Return the thread's pending status used to determine whether the |
6915 | thread is a fork parent stopped at a fork event. */ | |
6916 | ||
6917 | static struct target_waitstatus * | |
6918 | thread_pending_fork_status (struct thread_info *thread) | |
6919 | { | |
6920 | if (thread->suspend.waitstatus_pending_p) | |
6921 | return &thread->suspend.waitstatus; | |
6922 | else | |
6923 | return &thread->pending_follow; | |
6924 | } | |
6925 | ||
6926 | /* Determine if THREAD is a pending fork parent thread. */ | |
6927 | ||
6928 | static int | |
6929 | is_pending_fork_parent_thread (struct thread_info *thread) | |
6930 | { | |
6931 | struct target_waitstatus *ws = thread_pending_fork_status (thread); | |
6932 | int pid = -1; | |
6933 | ||
6934 | return is_pending_fork_parent (ws, pid, thread->ptid); | |
6935 | } | |
6936 | ||
cbb8991c DB |
6937 | /* If CONTEXT contains any fork child threads that have not been |
6938 | reported yet, remove them from the CONTEXT list. If such a | |
6939 | thread exists it is because we are stopped at a fork catchpoint | |
6940 | and have not yet called follow_fork, which will set up the | |
6941 | host-side data structures for the new process. */ | |
6942 | ||
6b8edb51 PA |
6943 | void |
6944 | remote_target::remove_new_fork_children (threads_listing_context *context) | |
cbb8991c | 6945 | { |
cbb8991c DB |
6946 | int pid = -1; |
6947 | struct notif_client *notif = ¬if_client_stop; | |
cbb8991c DB |
6948 | |
6949 | /* For any threads stopped at a fork event, remove the corresponding | |
6950 | fork child threads from the CONTEXT list. */ | |
08036331 | 6951 | for (thread_info *thread : all_non_exited_threads ()) |
cbb8991c | 6952 | { |
85ad3aaf | 6953 | struct target_waitstatus *ws = thread_pending_fork_status (thread); |
cbb8991c DB |
6954 | |
6955 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
21fe1c75 | 6956 | context->remove_thread (ws->value.related_pid); |
cbb8991c DB |
6957 | } |
6958 | ||
6959 | /* Check for any pending fork events (not reported or processed yet) | |
6960 | in process PID and remove those fork child threads from the | |
6961 | CONTEXT list as well. */ | |
6962 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
6963 | for (auto &event : get_remote_state ()->stop_reply_queue) |
6964 | if (event->ws.kind == TARGET_WAITKIND_FORKED | |
6965 | || event->ws.kind == TARGET_WAITKIND_VFORKED | |
6966 | || event->ws.kind == TARGET_WAITKIND_THREAD_EXITED) | |
6967 | context->remove_thread (event->ws.value.related_pid); | |
85ad3aaf PA |
6968 | } |
6969 | ||
6970 | /* Check whether any event pending in the vStopped queue would prevent | |
6971 | a global or process wildcard vCont action. Clear | |
6972 | *may_global_wildcard if we can't do a global wildcard (vCont;c), | |
6973 | and clear the event inferior's may_wildcard_vcont flag if we can't | |
6974 | do a process-wide wildcard resume (vCont;c:pPID.-1). */ | |
6975 | ||
6b8edb51 PA |
6976 | void |
6977 | remote_target::check_pending_events_prevent_wildcard_vcont | |
6978 | (int *may_global_wildcard) | |
85ad3aaf PA |
6979 | { |
6980 | struct notif_client *notif = ¬if_client_stop; | |
6981 | ||
6982 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
6983 | for (auto &event : get_remote_state ()->stop_reply_queue) |
6984 | { | |
6985 | if (event->ws.kind == TARGET_WAITKIND_NO_RESUMED | |
6986 | || event->ws.kind == TARGET_WAITKIND_NO_HISTORY) | |
6987 | continue; | |
85ad3aaf | 6988 | |
953edf2b TT |
6989 | if (event->ws.kind == TARGET_WAITKIND_FORKED |
6990 | || event->ws.kind == TARGET_WAITKIND_VFORKED) | |
6991 | *may_global_wildcard = 0; | |
722247f1 | 6992 | |
953edf2b | 6993 | struct inferior *inf = find_inferior_ptid (event->ptid); |
722247f1 | 6994 | |
953edf2b TT |
6995 | /* This may be the first time we heard about this process. |
6996 | Regardless, we must not do a global wildcard resume, otherwise | |
6997 | we'd resume this process too. */ | |
6998 | *may_global_wildcard = 0; | |
6999 | if (inf != NULL) | |
7000 | get_remote_inferior (inf)->may_wildcard_vcont = false; | |
722247f1 | 7001 | } |
722247f1 YQ |
7002 | } |
7003 | ||
f48ff2a7 | 7004 | /* Discard all pending stop replies of inferior INF. */ |
c906108c | 7005 | |
6b8edb51 PA |
7006 | void |
7007 | remote_target::discard_pending_stop_replies (struct inferior *inf) | |
c906108c | 7008 | { |
f48ff2a7 YQ |
7009 | struct stop_reply *reply; |
7010 | struct remote_state *rs = get_remote_state (); | |
7011 | struct remote_notif_state *rns = rs->notif_state; | |
7012 | ||
7013 | /* This function can be notified when an inferior exists. When the | |
7014 | target is not remote, the notification state is NULL. */ | |
7015 | if (rs->remote_desc == NULL) | |
7016 | return; | |
7017 | ||
7018 | reply = (struct stop_reply *) rns->pending_event[notif_client_stop.id]; | |
c906108c | 7019 | |
74531fed | 7020 | /* Discard the in-flight notification. */ |
e99b03dc | 7021 | if (reply != NULL && reply->ptid.pid () == inf->pid) |
74531fed | 7022 | { |
32603266 | 7023 | delete reply; |
f48ff2a7 | 7024 | rns->pending_event[notif_client_stop.id] = NULL; |
74531fed | 7025 | } |
c906108c | 7026 | |
74531fed PA |
7027 | /* Discard the stop replies we have already pulled with |
7028 | vStopped. */ | |
953edf2b TT |
7029 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7030 | rs->stop_reply_queue.end (), | |
7031 | [=] (const stop_reply_up &event) | |
7032 | { | |
7033 | return event->ptid.pid () == inf->pid; | |
7034 | }); | |
7035 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
bcc75809 YQ |
7036 | } |
7037 | ||
7038 | /* Discard the stop replies for RS in stop_reply_queue. */ | |
f48ff2a7 | 7039 | |
6b8edb51 PA |
7040 | void |
7041 | remote_target::discard_pending_stop_replies_in_queue () | |
f48ff2a7 | 7042 | { |
6b8edb51 | 7043 | remote_state *rs = get_remote_state (); |
f48ff2a7 | 7044 | |
f48ff2a7 YQ |
7045 | /* Discard the stop replies we have already pulled with |
7046 | vStopped. */ | |
953edf2b TT |
7047 | auto iter = std::remove_if (rs->stop_reply_queue.begin (), |
7048 | rs->stop_reply_queue.end (), | |
7049 | [=] (const stop_reply_up &event) | |
7050 | { | |
7051 | return event->rs == rs; | |
7052 | }); | |
7053 | rs->stop_reply_queue.erase (iter, rs->stop_reply_queue.end ()); | |
74531fed | 7054 | } |
43ff13b4 | 7055 | |
722247f1 YQ |
7056 | /* Remove the first reply in 'stop_reply_queue' which matches |
7057 | PTID. */ | |
2e9f7625 | 7058 | |
6b8edb51 PA |
7059 | struct stop_reply * |
7060 | remote_target::remote_notif_remove_queued_reply (ptid_t ptid) | |
74531fed | 7061 | { |
953edf2b | 7062 | remote_state *rs = get_remote_state (); |
722247f1 | 7063 | |
953edf2b TT |
7064 | auto iter = std::find_if (rs->stop_reply_queue.begin (), |
7065 | rs->stop_reply_queue.end (), | |
7066 | [=] (const stop_reply_up &event) | |
7067 | { | |
7068 | return event->ptid.matches (ptid); | |
7069 | }); | |
7070 | struct stop_reply *result; | |
7071 | if (iter == rs->stop_reply_queue.end ()) | |
7072 | result = nullptr; | |
7073 | else | |
7074 | { | |
7075 | result = iter->release (); | |
7076 | rs->stop_reply_queue.erase (iter); | |
7077 | } | |
722247f1 | 7078 | |
722247f1 YQ |
7079 | if (notif_debug) |
7080 | fprintf_unfiltered (gdb_stdlog, | |
7081 | "notif: discard queued event: 'Stop' in %s\n", | |
a068643d | 7082 | target_pid_to_str (ptid).c_str ()); |
a744cf53 | 7083 | |
953edf2b | 7084 | return result; |
74531fed | 7085 | } |
75c99385 | 7086 | |
74531fed PA |
7087 | /* Look for a queued stop reply belonging to PTID. If one is found, |
7088 | remove it from the queue, and return it. Returns NULL if none is | |
7089 | found. If there are still queued events left to process, tell the | |
7090 | event loop to get back to target_wait soon. */ | |
e24a49d8 | 7091 | |
6b8edb51 PA |
7092 | struct stop_reply * |
7093 | remote_target::queued_stop_reply (ptid_t ptid) | |
74531fed | 7094 | { |
953edf2b | 7095 | remote_state *rs = get_remote_state (); |
722247f1 | 7096 | struct stop_reply *r = remote_notif_remove_queued_reply (ptid); |
74531fed | 7097 | |
953edf2b | 7098 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7099 | { |
6b8edb51 PA |
7100 | /* There's still at least an event left. */ |
7101 | mark_async_event_handler (rs->remote_async_inferior_event_token); | |
7102 | } | |
74531fed | 7103 | |
722247f1 | 7104 | return r; |
74531fed PA |
7105 | } |
7106 | ||
7107 | /* Push a fully parsed stop reply in the stop reply queue. Since we | |
7108 | know that we now have at least one queued event left to pass to the | |
7109 | core side, tell the event loop to get back to target_wait soon. */ | |
7110 | ||
6b8edb51 PA |
7111 | void |
7112 | remote_target::push_stop_reply (struct stop_reply *new_event) | |
74531fed | 7113 | { |
6b8edb51 | 7114 | remote_state *rs = get_remote_state (); |
953edf2b | 7115 | rs->stop_reply_queue.push_back (stop_reply_up (new_event)); |
74531fed | 7116 | |
722247f1 YQ |
7117 | if (notif_debug) |
7118 | fprintf_unfiltered (gdb_stdlog, | |
7119 | "notif: push 'Stop' %s to queue %d\n", | |
a068643d | 7120 | target_pid_to_str (new_event->ptid).c_str (), |
953edf2b | 7121 | int (rs->stop_reply_queue.size ())); |
74531fed | 7122 | |
6b8edb51 | 7123 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
74531fed PA |
7124 | } |
7125 | ||
7126 | /* Returns true if we have a stop reply for PTID. */ | |
7127 | ||
6b8edb51 PA |
7128 | int |
7129 | remote_target::peek_stop_reply (ptid_t ptid) | |
74531fed | 7130 | { |
6b8edb51 | 7131 | remote_state *rs = get_remote_state (); |
953edf2b TT |
7132 | for (auto &event : rs->stop_reply_queue) |
7133 | if (ptid == event->ptid | |
7134 | && event->ws.kind == TARGET_WAITKIND_STOPPED) | |
7135 | return 1; | |
7136 | return 0; | |
74531fed PA |
7137 | } |
7138 | ||
26d56a93 SL |
7139 | /* Helper for remote_parse_stop_reply. Return nonzero if the substring |
7140 | starting with P and ending with PEND matches PREFIX. */ | |
7141 | ||
7142 | static int | |
7143 | strprefix (const char *p, const char *pend, const char *prefix) | |
7144 | { | |
7145 | for ( ; p < pend; p++, prefix++) | |
7146 | if (*p != *prefix) | |
7147 | return 0; | |
7148 | return *prefix == '\0'; | |
7149 | } | |
7150 | ||
74531fed PA |
7151 | /* Parse the stop reply in BUF. Either the function succeeds, and the |
7152 | result is stored in EVENT, or throws an error. */ | |
7153 | ||
6b8edb51 | 7154 | void |
bb277751 | 7155 | remote_target::remote_parse_stop_reply (const char *buf, stop_reply *event) |
74531fed | 7156 | { |
5cd63fda | 7157 | remote_arch_state *rsa = NULL; |
74531fed | 7158 | ULONGEST addr; |
256642e8 | 7159 | const char *p; |
94585166 | 7160 | int skipregs = 0; |
74531fed PA |
7161 | |
7162 | event->ptid = null_ptid; | |
bcc75809 | 7163 | event->rs = get_remote_state (); |
74531fed PA |
7164 | event->ws.kind = TARGET_WAITKIND_IGNORE; |
7165 | event->ws.value.integer = 0; | |
f7e6eed5 | 7166 | event->stop_reason = TARGET_STOPPED_BY_NO_REASON; |
32603266 | 7167 | event->regcache.clear (); |
dc146f7c | 7168 | event->core = -1; |
74531fed PA |
7169 | |
7170 | switch (buf[0]) | |
7171 | { | |
7172 | case 'T': /* Status with PC, SP, FP, ... */ | |
cea39f65 MS |
7173 | /* Expedited reply, containing Signal, {regno, reg} repeat. */ |
7174 | /* format is: 'Tssn...:r...;n...:r...;n...:r...;#cc', where | |
7175 | ss = signal number | |
7176 | n... = register number | |
7177 | r... = register contents | |
7178 | */ | |
7179 | ||
7180 | p = &buf[3]; /* after Txx */ | |
7181 | while (*p) | |
7182 | { | |
256642e8 | 7183 | const char *p1; |
cea39f65 | 7184 | int fieldsize; |
43ff13b4 | 7185 | |
1f10ba14 PA |
7186 | p1 = strchr (p, ':'); |
7187 | if (p1 == NULL) | |
7188 | error (_("Malformed packet(a) (missing colon): %s\n\ | |
7189 | Packet: '%s'\n"), | |
7190 | p, buf); | |
7191 | if (p == p1) | |
7192 | error (_("Malformed packet(a) (missing register number): %s\n\ | |
7193 | Packet: '%s'\n"), | |
7194 | p, buf); | |
3c3bea1c | 7195 | |
1f10ba14 PA |
7196 | /* Some "registers" are actually extended stop information. |
7197 | Note if you're adding a new entry here: GDB 7.9 and | |
7198 | earlier assume that all register "numbers" that start | |
7199 | with an hex digit are real register numbers. Make sure | |
7200 | the server only sends such a packet if it knows the | |
7201 | client understands it. */ | |
c8e38a49 | 7202 | |
26d56a93 | 7203 | if (strprefix (p, p1, "thread")) |
1f10ba14 | 7204 | event->ptid = read_ptid (++p1, &p); |
82075af2 JS |
7205 | else if (strprefix (p, p1, "syscall_entry")) |
7206 | { | |
7207 | ULONGEST sysno; | |
7208 | ||
7209 | event->ws.kind = TARGET_WAITKIND_SYSCALL_ENTRY; | |
7210 | p = unpack_varlen_hex (++p1, &sysno); | |
7211 | event->ws.value.syscall_number = (int) sysno; | |
7212 | } | |
7213 | else if (strprefix (p, p1, "syscall_return")) | |
7214 | { | |
7215 | ULONGEST sysno; | |
7216 | ||
7217 | event->ws.kind = TARGET_WAITKIND_SYSCALL_RETURN; | |
7218 | p = unpack_varlen_hex (++p1, &sysno); | |
7219 | event->ws.value.syscall_number = (int) sysno; | |
7220 | } | |
26d56a93 SL |
7221 | else if (strprefix (p, p1, "watch") |
7222 | || strprefix (p, p1, "rwatch") | |
7223 | || strprefix (p, p1, "awatch")) | |
cea39f65 | 7224 | { |
f7e6eed5 | 7225 | event->stop_reason = TARGET_STOPPED_BY_WATCHPOINT; |
1f10ba14 PA |
7226 | p = unpack_varlen_hex (++p1, &addr); |
7227 | event->watch_data_address = (CORE_ADDR) addr; | |
cea39f65 | 7228 | } |
26d56a93 | 7229 | else if (strprefix (p, p1, "swbreak")) |
f7e6eed5 PA |
7230 | { |
7231 | event->stop_reason = TARGET_STOPPED_BY_SW_BREAKPOINT; | |
7232 | ||
7233 | /* Make sure the stub doesn't forget to indicate support | |
7234 | with qSupported. */ | |
7235 | if (packet_support (PACKET_swbreak_feature) != PACKET_ENABLE) | |
7236 | error (_("Unexpected swbreak stop reason")); | |
7237 | ||
7238 | /* The value part is documented as "must be empty", | |
7239 | though we ignore it, in case we ever decide to make | |
7240 | use of it in a backward compatible way. */ | |
8424cc97 | 7241 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7242 | } |
26d56a93 | 7243 | else if (strprefix (p, p1, "hwbreak")) |
f7e6eed5 PA |
7244 | { |
7245 | event->stop_reason = TARGET_STOPPED_BY_HW_BREAKPOINT; | |
7246 | ||
7247 | /* Make sure the stub doesn't forget to indicate support | |
7248 | with qSupported. */ | |
7249 | if (packet_support (PACKET_hwbreak_feature) != PACKET_ENABLE) | |
7250 | error (_("Unexpected hwbreak stop reason")); | |
7251 | ||
7252 | /* See above. */ | |
8424cc97 | 7253 | p = strchrnul (p1 + 1, ';'); |
f7e6eed5 | 7254 | } |
26d56a93 | 7255 | else if (strprefix (p, p1, "library")) |
cea39f65 | 7256 | { |
1f10ba14 | 7257 | event->ws.kind = TARGET_WAITKIND_LOADED; |
8424cc97 | 7258 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7259 | } |
26d56a93 | 7260 | else if (strprefix (p, p1, "replaylog")) |
1f10ba14 PA |
7261 | { |
7262 | event->ws.kind = TARGET_WAITKIND_NO_HISTORY; | |
7263 | /* p1 will indicate "begin" or "end", but it makes | |
7264 | no difference for now, so ignore it. */ | |
8424cc97 | 7265 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7266 | } |
26d56a93 | 7267 | else if (strprefix (p, p1, "core")) |
1f10ba14 PA |
7268 | { |
7269 | ULONGEST c; | |
a744cf53 | 7270 | |
1f10ba14 PA |
7271 | p = unpack_varlen_hex (++p1, &c); |
7272 | event->core = c; | |
cea39f65 | 7273 | } |
26d56a93 | 7274 | else if (strprefix (p, p1, "fork")) |
de0d863e DB |
7275 | { |
7276 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7277 | event->ws.kind = TARGET_WAITKIND_FORKED; | |
7278 | } | |
26d56a93 | 7279 | else if (strprefix (p, p1, "vfork")) |
c269dbdb DB |
7280 | { |
7281 | event->ws.value.related_pid = read_ptid (++p1, &p); | |
7282 | event->ws.kind = TARGET_WAITKIND_VFORKED; | |
7283 | } | |
26d56a93 | 7284 | else if (strprefix (p, p1, "vforkdone")) |
c269dbdb DB |
7285 | { |
7286 | event->ws.kind = TARGET_WAITKIND_VFORK_DONE; | |
8424cc97 | 7287 | p = strchrnul (p1 + 1, ';'); |
c269dbdb | 7288 | } |
6ab24463 | 7289 | else if (strprefix (p, p1, "exec")) |
94585166 DB |
7290 | { |
7291 | ULONGEST ignored; | |
94585166 DB |
7292 | int pathlen; |
7293 | ||
7294 | /* Determine the length of the execd pathname. */ | |
7295 | p = unpack_varlen_hex (++p1, &ignored); | |
7296 | pathlen = (p - p1) / 2; | |
7297 | ||
7298 | /* Save the pathname for event reporting and for | |
7299 | the next run command. */ | |
c6321f19 TT |
7300 | gdb::unique_xmalloc_ptr<char[]> pathname |
7301 | ((char *) xmalloc (pathlen + 1)); | |
7302 | hex2bin (p1, (gdb_byte *) pathname.get (), pathlen); | |
94585166 DB |
7303 | pathname[pathlen] = '\0'; |
7304 | ||
7305 | /* This is freed during event handling. */ | |
c6321f19 | 7306 | event->ws.value.execd_pathname = pathname.release (); |
94585166 DB |
7307 | event->ws.kind = TARGET_WAITKIND_EXECD; |
7308 | ||
7309 | /* Skip the registers included in this packet, since | |
7310 | they may be for an architecture different from the | |
7311 | one used by the original program. */ | |
7312 | skipregs = 1; | |
7313 | } | |
65706a29 PA |
7314 | else if (strprefix (p, p1, "create")) |
7315 | { | |
7316 | event->ws.kind = TARGET_WAITKIND_THREAD_CREATED; | |
8424cc97 | 7317 | p = strchrnul (p1 + 1, ';'); |
65706a29 | 7318 | } |
cea39f65 MS |
7319 | else |
7320 | { | |
1f10ba14 | 7321 | ULONGEST pnum; |
256642e8 | 7322 | const char *p_temp; |
1f10ba14 | 7323 | |
94585166 DB |
7324 | if (skipregs) |
7325 | { | |
8424cc97 | 7326 | p = strchrnul (p1 + 1, ';'); |
94585166 DB |
7327 | p++; |
7328 | continue; | |
7329 | } | |
7330 | ||
1f10ba14 PA |
7331 | /* Maybe a real ``P'' register number. */ |
7332 | p_temp = unpack_varlen_hex (p, &pnum); | |
7333 | /* If the first invalid character is the colon, we got a | |
7334 | register number. Otherwise, it's an unknown stop | |
7335 | reason. */ | |
7336 | if (p_temp == p1) | |
7337 | { | |
5cd63fda PA |
7338 | /* If we haven't parsed the event's thread yet, find |
7339 | it now, in order to find the architecture of the | |
7340 | reported expedited registers. */ | |
7341 | if (event->ptid == null_ptid) | |
7342 | { | |
7343 | const char *thr = strstr (p1 + 1, ";thread:"); | |
7344 | if (thr != NULL) | |
7345 | event->ptid = read_ptid (thr + strlen (";thread:"), | |
7346 | NULL); | |
7347 | else | |
3cada740 PA |
7348 | { |
7349 | /* Either the current thread hasn't changed, | |
7350 | or the inferior is not multi-threaded. | |
7351 | The event must be for the thread we last | |
7352 | set as (or learned as being) current. */ | |
7353 | event->ptid = event->rs->general_thread; | |
7354 | } | |
5cd63fda PA |
7355 | } |
7356 | ||
7357 | if (rsa == NULL) | |
7358 | { | |
7359 | inferior *inf = (event->ptid == null_ptid | |
7360 | ? NULL | |
7361 | : find_inferior_ptid (event->ptid)); | |
7362 | /* If this is the first time we learn anything | |
7363 | about this process, skip the registers | |
7364 | included in this packet, since we don't yet | |
7365 | know which architecture to use to parse them. | |
7366 | We'll determine the architecture later when | |
7367 | we process the stop reply and retrieve the | |
7368 | target description, via | |
7369 | remote_notice_new_inferior -> | |
7370 | post_create_inferior. */ | |
7371 | if (inf == NULL) | |
7372 | { | |
7373 | p = strchrnul (p1 + 1, ';'); | |
7374 | p++; | |
7375 | continue; | |
7376 | } | |
7377 | ||
7378 | event->arch = inf->gdbarch; | |
9d6eea31 | 7379 | rsa = event->rs->get_remote_arch_state (event->arch); |
5cd63fda PA |
7380 | } |
7381 | ||
7382 | packet_reg *reg | |
7383 | = packet_reg_from_pnum (event->arch, rsa, pnum); | |
1f10ba14 | 7384 | cached_reg_t cached_reg; |
43ff13b4 | 7385 | |
1f10ba14 PA |
7386 | if (reg == NULL) |
7387 | error (_("Remote sent bad register number %s: %s\n\ | |
8a3fe4f8 | 7388 | Packet: '%s'\n"), |
1f10ba14 | 7389 | hex_string (pnum), p, buf); |
c8e38a49 | 7390 | |
1f10ba14 | 7391 | cached_reg.num = reg->regnum; |
d1dff226 | 7392 | cached_reg.data = (gdb_byte *) |
5cd63fda | 7393 | xmalloc (register_size (event->arch, reg->regnum)); |
4100683b | 7394 | |
1f10ba14 PA |
7395 | p = p1 + 1; |
7396 | fieldsize = hex2bin (p, cached_reg.data, | |
5cd63fda | 7397 | register_size (event->arch, reg->regnum)); |
1f10ba14 | 7398 | p += 2 * fieldsize; |
5cd63fda | 7399 | if (fieldsize < register_size (event->arch, reg->regnum)) |
1f10ba14 | 7400 | warning (_("Remote reply is too short: %s"), buf); |
74531fed | 7401 | |
32603266 | 7402 | event->regcache.push_back (cached_reg); |
1f10ba14 PA |
7403 | } |
7404 | else | |
7405 | { | |
7406 | /* Not a number. Silently skip unknown optional | |
7407 | info. */ | |
8424cc97 | 7408 | p = strchrnul (p1 + 1, ';'); |
1f10ba14 | 7409 | } |
cea39f65 | 7410 | } |
c8e38a49 | 7411 | |
cea39f65 MS |
7412 | if (*p != ';') |
7413 | error (_("Remote register badly formatted: %s\nhere: %s"), | |
7414 | buf, p); | |
7415 | ++p; | |
7416 | } | |
5b5596ff PA |
7417 | |
7418 | if (event->ws.kind != TARGET_WAITKIND_IGNORE) | |
7419 | break; | |
7420 | ||
c8e38a49 PA |
7421 | /* fall through */ |
7422 | case 'S': /* Old style status, just signal only. */ | |
3a09da41 PA |
7423 | { |
7424 | int sig; | |
7425 | ||
7426 | event->ws.kind = TARGET_WAITKIND_STOPPED; | |
7427 | sig = (fromhex (buf[1]) << 4) + fromhex (buf[2]); | |
7428 | if (GDB_SIGNAL_FIRST <= sig && sig < GDB_SIGNAL_LAST) | |
7429 | event->ws.value.sig = (enum gdb_signal) sig; | |
7430 | else | |
7431 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
7432 | } | |
c8e38a49 | 7433 | break; |
65706a29 PA |
7434 | case 'w': /* Thread exited. */ |
7435 | { | |
65706a29 PA |
7436 | ULONGEST value; |
7437 | ||
7438 | event->ws.kind = TARGET_WAITKIND_THREAD_EXITED; | |
7439 | p = unpack_varlen_hex (&buf[1], &value); | |
7440 | event->ws.value.integer = value; | |
7441 | if (*p != ';') | |
7442 | error (_("stop reply packet badly formatted: %s"), buf); | |
974eac9d | 7443 | event->ptid = read_ptid (++p, NULL); |
65706a29 PA |
7444 | break; |
7445 | } | |
c8e38a49 PA |
7446 | case 'W': /* Target exited. */ |
7447 | case 'X': | |
7448 | { | |
c8e38a49 PA |
7449 | int pid; |
7450 | ULONGEST value; | |
82f73884 | 7451 | |
c8e38a49 PA |
7452 | /* GDB used to accept only 2 hex chars here. Stubs should |
7453 | only send more if they detect GDB supports multi-process | |
7454 | support. */ | |
7455 | p = unpack_varlen_hex (&buf[1], &value); | |
82f73884 | 7456 | |
c8e38a49 PA |
7457 | if (buf[0] == 'W') |
7458 | { | |
7459 | /* The remote process exited. */ | |
74531fed PA |
7460 | event->ws.kind = TARGET_WAITKIND_EXITED; |
7461 | event->ws.value.integer = value; | |
c8e38a49 PA |
7462 | } |
7463 | else | |
7464 | { | |
7465 | /* The remote process exited with a signal. */ | |
74531fed | 7466 | event->ws.kind = TARGET_WAITKIND_SIGNALLED; |
3a09da41 PA |
7467 | if (GDB_SIGNAL_FIRST <= value && value < GDB_SIGNAL_LAST) |
7468 | event->ws.value.sig = (enum gdb_signal) value; | |
7469 | else | |
7470 | event->ws.value.sig = GDB_SIGNAL_UNKNOWN; | |
c8e38a49 | 7471 | } |
82f73884 | 7472 | |
c8e38a49 | 7473 | /* If no process is specified, assume inferior_ptid. */ |
e99b03dc | 7474 | pid = inferior_ptid.pid (); |
c8e38a49 PA |
7475 | if (*p == '\0') |
7476 | ; | |
7477 | else if (*p == ';') | |
7478 | { | |
7479 | p++; | |
7480 | ||
0b24eb2d | 7481 | if (*p == '\0') |
82f73884 | 7482 | ; |
61012eef | 7483 | else if (startswith (p, "process:")) |
82f73884 | 7484 | { |
c8e38a49 | 7485 | ULONGEST upid; |
a744cf53 | 7486 | |
c8e38a49 PA |
7487 | p += sizeof ("process:") - 1; |
7488 | unpack_varlen_hex (p, &upid); | |
7489 | pid = upid; | |
82f73884 PA |
7490 | } |
7491 | else | |
7492 | error (_("unknown stop reply packet: %s"), buf); | |
43ff13b4 | 7493 | } |
c8e38a49 PA |
7494 | else |
7495 | error (_("unknown stop reply packet: %s"), buf); | |
f2907e49 | 7496 | event->ptid = ptid_t (pid); |
74531fed PA |
7497 | } |
7498 | break; | |
f2faf941 PA |
7499 | case 'N': |
7500 | event->ws.kind = TARGET_WAITKIND_NO_RESUMED; | |
7501 | event->ptid = minus_one_ptid; | |
7502 | break; | |
74531fed PA |
7503 | } |
7504 | ||
d7e15655 | 7505 | if (target_is_non_stop_p () && event->ptid == null_ptid) |
74531fed PA |
7506 | error (_("No process or thread specified in stop reply: %s"), buf); |
7507 | } | |
7508 | ||
722247f1 YQ |
7509 | /* When the stub wants to tell GDB about a new notification reply, it |
7510 | sends a notification (%Stop, for example). Those can come it at | |
7511 | any time, hence, we have to make sure that any pending | |
7512 | putpkt/getpkt sequence we're making is finished, before querying | |
7513 | the stub for more events with the corresponding ack command | |
7514 | (vStopped, for example). E.g., if we started a vStopped sequence | |
7515 | immediately upon receiving the notification, something like this | |
7516 | could happen: | |
74531fed PA |
7517 | |
7518 | 1.1) --> Hg 1 | |
7519 | 1.2) <-- OK | |
7520 | 1.3) --> g | |
7521 | 1.4) <-- %Stop | |
7522 | 1.5) --> vStopped | |
7523 | 1.6) <-- (registers reply to step #1.3) | |
7524 | ||
7525 | Obviously, the reply in step #1.6 would be unexpected to a vStopped | |
7526 | query. | |
7527 | ||
796cb314 | 7528 | To solve this, whenever we parse a %Stop notification successfully, |
74531fed PA |
7529 | we mark the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN, and carry on |
7530 | doing whatever we were doing: | |
7531 | ||
7532 | 2.1) --> Hg 1 | |
7533 | 2.2) <-- OK | |
7534 | 2.3) --> g | |
7535 | 2.4) <-- %Stop | |
7536 | <GDB marks the REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN> | |
7537 | 2.5) <-- (registers reply to step #2.3) | |
7538 | ||
7539 | Eventualy after step #2.5, we return to the event loop, which | |
7540 | notices there's an event on the | |
7541 | REMOTE_ASYNC_GET_PENDING_EVENTS_TOKEN event and calls the | |
7542 | associated callback --- the function below. At this point, we're | |
7543 | always safe to start a vStopped sequence. : | |
7544 | ||
7545 | 2.6) --> vStopped | |
7546 | 2.7) <-- T05 thread:2 | |
7547 | 2.8) --> vStopped | |
7548 | 2.9) --> OK | |
7549 | */ | |
7550 | ||
722247f1 | 7551 | void |
6b8edb51 | 7552 | remote_target::remote_notif_get_pending_events (notif_client *nc) |
74531fed PA |
7553 | { |
7554 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7555 | |
f48ff2a7 | 7556 | if (rs->notif_state->pending_event[nc->id] != NULL) |
74531fed | 7557 | { |
722247f1 YQ |
7558 | if (notif_debug) |
7559 | fprintf_unfiltered (gdb_stdlog, | |
7560 | "notif: process: '%s' ack pending event\n", | |
7561 | nc->name); | |
74531fed | 7562 | |
722247f1 | 7563 | /* acknowledge */ |
8d64371b TT |
7564 | nc->ack (this, nc, rs->buf.data (), |
7565 | rs->notif_state->pending_event[nc->id]); | |
f48ff2a7 | 7566 | rs->notif_state->pending_event[nc->id] = NULL; |
74531fed PA |
7567 | |
7568 | while (1) | |
7569 | { | |
8d64371b TT |
7570 | getpkt (&rs->buf, 0); |
7571 | if (strcmp (rs->buf.data (), "OK") == 0) | |
74531fed PA |
7572 | break; |
7573 | else | |
8d64371b | 7574 | remote_notif_ack (this, nc, rs->buf.data ()); |
74531fed PA |
7575 | } |
7576 | } | |
722247f1 YQ |
7577 | else |
7578 | { | |
7579 | if (notif_debug) | |
7580 | fprintf_unfiltered (gdb_stdlog, | |
7581 | "notif: process: '%s' no pending reply\n", | |
7582 | nc->name); | |
7583 | } | |
74531fed PA |
7584 | } |
7585 | ||
6b8edb51 PA |
7586 | /* Wrapper around remote_target::remote_notif_get_pending_events to |
7587 | avoid having to export the whole remote_target class. */ | |
7588 | ||
7589 | void | |
7590 | remote_notif_get_pending_events (remote_target *remote, notif_client *nc) | |
7591 | { | |
7592 | remote->remote_notif_get_pending_events (nc); | |
7593 | } | |
7594 | ||
74531fed PA |
7595 | /* Called when it is decided that STOP_REPLY holds the info of the |
7596 | event that is to be returned to the core. This function always | |
7597 | destroys STOP_REPLY. */ | |
7598 | ||
6b8edb51 PA |
7599 | ptid_t |
7600 | remote_target::process_stop_reply (struct stop_reply *stop_reply, | |
7601 | struct target_waitstatus *status) | |
74531fed PA |
7602 | { |
7603 | ptid_t ptid; | |
7604 | ||
7605 | *status = stop_reply->ws; | |
7606 | ptid = stop_reply->ptid; | |
7607 | ||
7608 | /* If no thread/process was reported by the stub, assume the current | |
7609 | inferior. */ | |
d7e15655 | 7610 | if (ptid == null_ptid) |
74531fed PA |
7611 | ptid = inferior_ptid; |
7612 | ||
5f3563ea | 7613 | if (status->kind != TARGET_WAITKIND_EXITED |
f2faf941 PA |
7614 | && status->kind != TARGET_WAITKIND_SIGNALLED |
7615 | && status->kind != TARGET_WAITKIND_NO_RESUMED) | |
74531fed | 7616 | { |
5f3563ea | 7617 | /* Expedited registers. */ |
32603266 | 7618 | if (!stop_reply->regcache.empty ()) |
5f3563ea | 7619 | { |
217f1f79 | 7620 | struct regcache *regcache |
5cd63fda | 7621 | = get_thread_arch_regcache (ptid, stop_reply->arch); |
5f3563ea | 7622 | |
32603266 TT |
7623 | for (cached_reg_t ® : stop_reply->regcache) |
7624 | { | |
7625 | regcache->raw_supply (reg.num, reg.data); | |
7626 | xfree (reg.data); | |
7627 | } | |
d1dff226 | 7628 | |
32603266 | 7629 | stop_reply->regcache.clear (); |
5f3563ea | 7630 | } |
74531fed | 7631 | |
1941c569 | 7632 | remote_notice_new_inferior (ptid, 0); |
7aabaf9d | 7633 | remote_thread_info *remote_thr = get_remote_thread_info (ptid); |
799a2abe PA |
7634 | remote_thr->core = stop_reply->core; |
7635 | remote_thr->stop_reason = stop_reply->stop_reason; | |
7636 | remote_thr->watch_data_address = stop_reply->watch_data_address; | |
85ad3aaf | 7637 | remote_thr->vcont_resumed = 0; |
74531fed PA |
7638 | } |
7639 | ||
32603266 | 7640 | delete stop_reply; |
74531fed PA |
7641 | return ptid; |
7642 | } | |
7643 | ||
7644 | /* The non-stop mode version of target_wait. */ | |
7645 | ||
6b8edb51 PA |
7646 | ptid_t |
7647 | remote_target::wait_ns (ptid_t ptid, struct target_waitstatus *status, int options) | |
74531fed PA |
7648 | { |
7649 | struct remote_state *rs = get_remote_state (); | |
74531fed PA |
7650 | struct stop_reply *stop_reply; |
7651 | int ret; | |
fee9eda9 | 7652 | int is_notif = 0; |
74531fed PA |
7653 | |
7654 | /* If in non-stop mode, get out of getpkt even if a | |
7655 | notification is received. */ | |
7656 | ||
8d64371b | 7657 | ret = getpkt_or_notif_sane (&rs->buf, 0 /* forever */, &is_notif); |
74531fed PA |
7658 | while (1) |
7659 | { | |
fee9eda9 | 7660 | if (ret != -1 && !is_notif) |
74531fed PA |
7661 | switch (rs->buf[0]) |
7662 | { | |
7663 | case 'E': /* Error of some sort. */ | |
7664 | /* We're out of sync with the target now. Did it continue | |
7665 | or not? We can't tell which thread it was in non-stop, | |
7666 | so just ignore this. */ | |
8d64371b | 7667 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
74531fed PA |
7668 | break; |
7669 | case 'O': /* Console output. */ | |
8d64371b | 7670 | remote_console_output (&rs->buf[1]); |
74531fed PA |
7671 | break; |
7672 | default: | |
8d64371b | 7673 | warning (_("Invalid remote reply: %s"), rs->buf.data ()); |
74531fed PA |
7674 | break; |
7675 | } | |
7676 | ||
7677 | /* Acknowledge a pending stop reply that may have arrived in the | |
7678 | mean time. */ | |
f48ff2a7 | 7679 | if (rs->notif_state->pending_event[notif_client_stop.id] != NULL) |
722247f1 | 7680 | remote_notif_get_pending_events (¬if_client_stop); |
74531fed PA |
7681 | |
7682 | /* If indeed we noticed a stop reply, we're done. */ | |
7683 | stop_reply = queued_stop_reply (ptid); | |
7684 | if (stop_reply != NULL) | |
7685 | return process_stop_reply (stop_reply, status); | |
7686 | ||
47608cb1 | 7687 | /* Still no event. If we're just polling for an event, then |
74531fed | 7688 | return to the event loop. */ |
47608cb1 | 7689 | if (options & TARGET_WNOHANG) |
74531fed PA |
7690 | { |
7691 | status->kind = TARGET_WAITKIND_IGNORE; | |
7692 | return minus_one_ptid; | |
7693 | } | |
7694 | ||
47608cb1 | 7695 | /* Otherwise do a blocking wait. */ |
8d64371b | 7696 | ret = getpkt_or_notif_sane (&rs->buf, 1 /* forever */, &is_notif); |
74531fed PA |
7697 | } |
7698 | } | |
7699 | ||
7700 | /* Wait until the remote machine stops, then return, storing status in | |
7701 | STATUS just as `wait' would. */ | |
7702 | ||
6b8edb51 PA |
7703 | ptid_t |
7704 | remote_target::wait_as (ptid_t ptid, target_waitstatus *status, int options) | |
74531fed PA |
7705 | { |
7706 | struct remote_state *rs = get_remote_state (); | |
74531fed | 7707 | ptid_t event_ptid = null_ptid; |
cea39f65 | 7708 | char *buf; |
74531fed PA |
7709 | struct stop_reply *stop_reply; |
7710 | ||
47608cb1 PA |
7711 | again: |
7712 | ||
74531fed PA |
7713 | status->kind = TARGET_WAITKIND_IGNORE; |
7714 | status->value.integer = 0; | |
7715 | ||
7716 | stop_reply = queued_stop_reply (ptid); | |
7717 | if (stop_reply != NULL) | |
7718 | return process_stop_reply (stop_reply, status); | |
7719 | ||
7720 | if (rs->cached_wait_status) | |
7721 | /* Use the cached wait status, but only once. */ | |
7722 | rs->cached_wait_status = 0; | |
7723 | else | |
7724 | { | |
7725 | int ret; | |
722247f1 | 7726 | int is_notif; |
567420d1 | 7727 | int forever = ((options & TARGET_WNOHANG) == 0 |
6b8edb51 | 7728 | && rs->wait_forever_enabled_p); |
567420d1 PA |
7729 | |
7730 | if (!rs->waiting_for_stop_reply) | |
7731 | { | |
7732 | status->kind = TARGET_WAITKIND_NO_RESUMED; | |
7733 | return minus_one_ptid; | |
7734 | } | |
74531fed | 7735 | |
74531fed PA |
7736 | /* FIXME: cagney/1999-09-27: If we're in async mode we should |
7737 | _never_ wait for ever -> test on target_is_async_p(). | |
7738 | However, before we do that we need to ensure that the caller | |
7739 | knows how to take the target into/out of async mode. */ | |
8d64371b | 7740 | ret = getpkt_or_notif_sane (&rs->buf, forever, &is_notif); |
722247f1 YQ |
7741 | |
7742 | /* GDB gets a notification. Return to core as this event is | |
7743 | not interesting. */ | |
7744 | if (ret != -1 && is_notif) | |
7745 | return minus_one_ptid; | |
567420d1 PA |
7746 | |
7747 | if (ret == -1 && (options & TARGET_WNOHANG) != 0) | |
7748 | return minus_one_ptid; | |
74531fed PA |
7749 | } |
7750 | ||
8d64371b | 7751 | buf = rs->buf.data (); |
74531fed | 7752 | |
3a29589a DJ |
7753 | /* Assume that the target has acknowledged Ctrl-C unless we receive |
7754 | an 'F' or 'O' packet. */ | |
7755 | if (buf[0] != 'F' && buf[0] != 'O') | |
7756 | rs->ctrlc_pending_p = 0; | |
7757 | ||
74531fed PA |
7758 | switch (buf[0]) |
7759 | { | |
7760 | case 'E': /* Error of some sort. */ | |
7761 | /* We're out of sync with the target now. Did it continue or | |
7762 | not? Not is more likely, so report a stop. */ | |
29090fb6 LM |
7763 | rs->waiting_for_stop_reply = 0; |
7764 | ||
74531fed PA |
7765 | warning (_("Remote failure reply: %s"), buf); |
7766 | status->kind = TARGET_WAITKIND_STOPPED; | |
a493e3e2 | 7767 | status->value.sig = GDB_SIGNAL_0; |
74531fed PA |
7768 | break; |
7769 | case 'F': /* File-I/O request. */ | |
e42e5352 YQ |
7770 | /* GDB may access the inferior memory while handling the File-I/O |
7771 | request, but we don't want GDB accessing memory while waiting | |
7772 | for a stop reply. See the comments in putpkt_binary. Set | |
7773 | waiting_for_stop_reply to 0 temporarily. */ | |
7774 | rs->waiting_for_stop_reply = 0; | |
6b8edb51 | 7775 | remote_fileio_request (this, buf, rs->ctrlc_pending_p); |
3a29589a | 7776 | rs->ctrlc_pending_p = 0; |
e42e5352 YQ |
7777 | /* GDB handled the File-I/O request, and the target is running |
7778 | again. Keep waiting for events. */ | |
7779 | rs->waiting_for_stop_reply = 1; | |
74531fed | 7780 | break; |
f2faf941 | 7781 | case 'N': case 'T': case 'S': case 'X': case 'W': |
74531fed | 7782 | { |
29090fb6 LM |
7783 | /* There is a stop reply to handle. */ |
7784 | rs->waiting_for_stop_reply = 0; | |
7785 | ||
7786 | stop_reply | |
6b8edb51 PA |
7787 | = (struct stop_reply *) remote_notif_parse (this, |
7788 | ¬if_client_stop, | |
8d64371b | 7789 | rs->buf.data ()); |
74531fed | 7790 | |
74531fed | 7791 | event_ptid = process_stop_reply (stop_reply, status); |
c8e38a49 PA |
7792 | break; |
7793 | } | |
7794 | case 'O': /* Console output. */ | |
7795 | remote_console_output (buf + 1); | |
c8e38a49 PA |
7796 | break; |
7797 | case '\0': | |
b73be471 | 7798 | if (rs->last_sent_signal != GDB_SIGNAL_0) |
c8e38a49 PA |
7799 | { |
7800 | /* Zero length reply means that we tried 'S' or 'C' and the | |
7801 | remote system doesn't support it. */ | |
223ffa71 | 7802 | target_terminal::ours_for_output (); |
c8e38a49 PA |
7803 | printf_filtered |
7804 | ("Can't send signals to this remote system. %s not sent.\n", | |
b73be471 TT |
7805 | gdb_signal_to_name (rs->last_sent_signal)); |
7806 | rs->last_sent_signal = GDB_SIGNAL_0; | |
223ffa71 | 7807 | target_terminal::inferior (); |
c8e38a49 | 7808 | |
f5c4fcd9 TT |
7809 | strcpy (buf, rs->last_sent_step ? "s" : "c"); |
7810 | putpkt (buf); | |
c8e38a49 | 7811 | break; |
43ff13b4 | 7812 | } |
86a73007 | 7813 | /* fallthrough */ |
c8e38a49 PA |
7814 | default: |
7815 | warning (_("Invalid remote reply: %s"), buf); | |
c8e38a49 | 7816 | break; |
43ff13b4 | 7817 | } |
c8e38a49 | 7818 | |
f2faf941 PA |
7819 | if (status->kind == TARGET_WAITKIND_NO_RESUMED) |
7820 | return minus_one_ptid; | |
7821 | else if (status->kind == TARGET_WAITKIND_IGNORE) | |
47608cb1 PA |
7822 | { |
7823 | /* Nothing interesting happened. If we're doing a non-blocking | |
7824 | poll, we're done. Otherwise, go back to waiting. */ | |
7825 | if (options & TARGET_WNOHANG) | |
7826 | return minus_one_ptid; | |
7827 | else | |
7828 | goto again; | |
7829 | } | |
74531fed PA |
7830 | else if (status->kind != TARGET_WAITKIND_EXITED |
7831 | && status->kind != TARGET_WAITKIND_SIGNALLED) | |
82f73884 | 7832 | { |
d7e15655 | 7833 | if (event_ptid != null_ptid) |
47f8a51d | 7834 | record_currthread (rs, event_ptid); |
82f73884 PA |
7835 | else |
7836 | event_ptid = inferior_ptid; | |
43ff13b4 | 7837 | } |
74531fed PA |
7838 | else |
7839 | /* A process exit. Invalidate our notion of current thread. */ | |
47f8a51d | 7840 | record_currthread (rs, minus_one_ptid); |
79d7f229 | 7841 | |
82f73884 | 7842 | return event_ptid; |
43ff13b4 JM |
7843 | } |
7844 | ||
74531fed PA |
7845 | /* Wait until the remote machine stops, then return, storing status in |
7846 | STATUS just as `wait' would. */ | |
7847 | ||
f6ac5f3d PA |
7848 | ptid_t |
7849 | remote_target::wait (ptid_t ptid, struct target_waitstatus *status, int options) | |
c8e38a49 PA |
7850 | { |
7851 | ptid_t event_ptid; | |
7852 | ||
6efcd9a8 | 7853 | if (target_is_non_stop_p ()) |
6b8edb51 | 7854 | event_ptid = wait_ns (ptid, status, options); |
74531fed | 7855 | else |
6b8edb51 | 7856 | event_ptid = wait_as (ptid, status, options); |
c8e38a49 | 7857 | |
d9d41e78 | 7858 | if (target_is_async_p ()) |
c8e38a49 | 7859 | { |
6b8edb51 PA |
7860 | remote_state *rs = get_remote_state (); |
7861 | ||
74531fed PA |
7862 | /* If there are are events left in the queue tell the event loop |
7863 | to return here. */ | |
953edf2b | 7864 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 7865 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
c8e38a49 | 7866 | } |
c8e38a49 PA |
7867 | |
7868 | return event_ptid; | |
7869 | } | |
7870 | ||
74ca34ce | 7871 | /* Fetch a single register using a 'p' packet. */ |
c906108c | 7872 | |
6b8edb51 PA |
7873 | int |
7874 | remote_target::fetch_register_using_p (struct regcache *regcache, | |
7875 | packet_reg *reg) | |
b96ec7ac | 7876 | { |
ac7936df | 7877 | struct gdbarch *gdbarch = regcache->arch (); |
b96ec7ac | 7878 | struct remote_state *rs = get_remote_state (); |
2e9f7625 | 7879 | char *buf, *p; |
9890e433 | 7880 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
b96ec7ac AC |
7881 | int i; |
7882 | ||
4082afcc | 7883 | if (packet_support (PACKET_p) == PACKET_DISABLE) |
74ca34ce DJ |
7884 | return 0; |
7885 | ||
7886 | if (reg->pnum == -1) | |
7887 | return 0; | |
7888 | ||
8d64371b | 7889 | p = rs->buf.data (); |
fcad0fa4 | 7890 | *p++ = 'p'; |
74ca34ce | 7891 | p += hexnumstr (p, reg->pnum); |
fcad0fa4 | 7892 | *p++ = '\0'; |
1f4437a4 | 7893 | putpkt (rs->buf); |
8d64371b | 7894 | getpkt (&rs->buf, 0); |
3f9a994c | 7895 | |
8d64371b | 7896 | buf = rs->buf.data (); |
2e9f7625 | 7897 | |
8d64371b | 7898 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_p])) |
74ca34ce DJ |
7899 | { |
7900 | case PACKET_OK: | |
7901 | break; | |
7902 | case PACKET_UNKNOWN: | |
7903 | return 0; | |
7904 | case PACKET_ERROR: | |
27a9c0bf | 7905 | error (_("Could not fetch register \"%s\"; remote failure reply '%s'"), |
ac7936df | 7906 | gdbarch_register_name (regcache->arch (), |
27a9c0bf MS |
7907 | reg->regnum), |
7908 | buf); | |
74ca34ce | 7909 | } |
3f9a994c JB |
7910 | |
7911 | /* If this register is unfetchable, tell the regcache. */ | |
7912 | if (buf[0] == 'x') | |
8480adf2 | 7913 | { |
73e1c03f | 7914 | regcache->raw_supply (reg->regnum, NULL); |
8480adf2 | 7915 | return 1; |
b96ec7ac | 7916 | } |
b96ec7ac | 7917 | |
3f9a994c JB |
7918 | /* Otherwise, parse and supply the value. */ |
7919 | p = buf; | |
7920 | i = 0; | |
7921 | while (p[0] != 0) | |
7922 | { | |
7923 | if (p[1] == 0) | |
74ca34ce | 7924 | error (_("fetch_register_using_p: early buf termination")); |
3f9a994c JB |
7925 | |
7926 | regp[i++] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
7927 | p += 2; | |
7928 | } | |
73e1c03f | 7929 | regcache->raw_supply (reg->regnum, regp); |
3f9a994c | 7930 | return 1; |
b96ec7ac AC |
7931 | } |
7932 | ||
74ca34ce DJ |
7933 | /* Fetch the registers included in the target's 'g' packet. */ |
7934 | ||
6b8edb51 PA |
7935 | int |
7936 | remote_target::send_g_packet () | |
c906108c | 7937 | { |
d01949b6 | 7938 | struct remote_state *rs = get_remote_state (); |
cea39f65 | 7939 | int buf_len; |
c906108c | 7940 | |
8d64371b | 7941 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "g"); |
b75abf5b | 7942 | putpkt (rs->buf); |
8d64371b | 7943 | getpkt (&rs->buf, 0); |
b75abf5b AK |
7944 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
7945 | error (_("Could not read registers; remote failure reply '%s'"), | |
8d64371b | 7946 | rs->buf.data ()); |
c906108c | 7947 | |
29709017 DJ |
7948 | /* We can get out of synch in various cases. If the first character |
7949 | in the buffer is not a hex character, assume that has happened | |
7950 | and try to fetch another packet to read. */ | |
7951 | while ((rs->buf[0] < '0' || rs->buf[0] > '9') | |
7952 | && (rs->buf[0] < 'A' || rs->buf[0] > 'F') | |
7953 | && (rs->buf[0] < 'a' || rs->buf[0] > 'f') | |
7954 | && rs->buf[0] != 'x') /* New: unavailable register value. */ | |
7955 | { | |
7956 | if (remote_debug) | |
7957 | fprintf_unfiltered (gdb_stdlog, | |
7958 | "Bad register packet; fetching a new packet\n"); | |
8d64371b | 7959 | getpkt (&rs->buf, 0); |
29709017 DJ |
7960 | } |
7961 | ||
8d64371b | 7962 | buf_len = strlen (rs->buf.data ()); |
74ca34ce DJ |
7963 | |
7964 | /* Sanity check the received packet. */ | |
7965 | if (buf_len % 2 != 0) | |
8d64371b | 7966 | error (_("Remote 'g' packet reply is of odd length: %s"), rs->buf.data ()); |
29709017 DJ |
7967 | |
7968 | return buf_len / 2; | |
7969 | } | |
7970 | ||
6b8edb51 PA |
7971 | void |
7972 | remote_target::process_g_packet (struct regcache *regcache) | |
29709017 | 7973 | { |
ac7936df | 7974 | struct gdbarch *gdbarch = regcache->arch (); |
29709017 | 7975 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 7976 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); |
29709017 DJ |
7977 | int i, buf_len; |
7978 | char *p; | |
7979 | char *regs; | |
7980 | ||
8d64371b | 7981 | buf_len = strlen (rs->buf.data ()); |
29709017 DJ |
7982 | |
7983 | /* Further sanity checks, with knowledge of the architecture. */ | |
74ca34ce | 7984 | if (buf_len > 2 * rsa->sizeof_g_packet) |
fc809827 | 7985 | error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d " |
8d64371b TT |
7986 | "bytes): %s"), |
7987 | rsa->sizeof_g_packet, buf_len / 2, | |
7988 | rs->buf.data ()); | |
74ca34ce DJ |
7989 | |
7990 | /* Save the size of the packet sent to us by the target. It is used | |
7991 | as a heuristic when determining the max size of packets that the | |
7992 | target can safely receive. */ | |
7993 | if (rsa->actual_register_packet_size == 0) | |
7994 | rsa->actual_register_packet_size = buf_len; | |
7995 | ||
7996 | /* If this is smaller than we guessed the 'g' packet would be, | |
7997 | update our records. A 'g' reply that doesn't include a register's | |
7998 | value implies either that the register is not available, or that | |
7999 | the 'p' packet must be used. */ | |
8000 | if (buf_len < 2 * rsa->sizeof_g_packet) | |
b323314b | 8001 | { |
9dc193c3 | 8002 | long sizeof_g_packet = buf_len / 2; |
74ca34ce | 8003 | |
4a22f64d | 8004 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
b96ec7ac | 8005 | { |
9dc193c3 LF |
8006 | long offset = rsa->regs[i].offset; |
8007 | long reg_size = register_size (gdbarch, i); | |
8008 | ||
74ca34ce DJ |
8009 | if (rsa->regs[i].pnum == -1) |
8010 | continue; | |
8011 | ||
9dc193c3 | 8012 | if (offset >= sizeof_g_packet) |
74ca34ce | 8013 | rsa->regs[i].in_g_packet = 0; |
9dc193c3 LF |
8014 | else if (offset + reg_size > sizeof_g_packet) |
8015 | error (_("Truncated register %d in remote 'g' packet"), i); | |
b96ec7ac | 8016 | else |
74ca34ce | 8017 | rsa->regs[i].in_g_packet = 1; |
b96ec7ac | 8018 | } |
9dc193c3 LF |
8019 | |
8020 | /* Looks valid enough, we can assume this is the correct length | |
8021 | for a 'g' packet. It's important not to adjust | |
8022 | rsa->sizeof_g_packet if we have truncated registers otherwise | |
8023 | this "if" won't be run the next time the method is called | |
8024 | with a packet of the same size and one of the internal errors | |
8025 | below will trigger instead. */ | |
8026 | rsa->sizeof_g_packet = sizeof_g_packet; | |
74ca34ce | 8027 | } |
b323314b | 8028 | |
224c3ddb | 8029 | regs = (char *) alloca (rsa->sizeof_g_packet); |
c906108c SS |
8030 | |
8031 | /* Unimplemented registers read as all bits zero. */ | |
ea9c271d | 8032 | memset (regs, 0, rsa->sizeof_g_packet); |
c906108c | 8033 | |
c906108c SS |
8034 | /* Reply describes registers byte by byte, each byte encoded as two |
8035 | hex characters. Suck them all up, then supply them to the | |
8036 | register cacheing/storage mechanism. */ | |
8037 | ||
8d64371b | 8038 | p = rs->buf.data (); |
ea9c271d | 8039 | for (i = 0; i < rsa->sizeof_g_packet; i++) |
c906108c | 8040 | { |
74ca34ce DJ |
8041 | if (p[0] == 0 || p[1] == 0) |
8042 | /* This shouldn't happen - we adjusted sizeof_g_packet above. */ | |
8043 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8044 | _("unexpected end of 'g' packet reply")); |
74ca34ce | 8045 | |
c906108c | 8046 | if (p[0] == 'x' && p[1] == 'x') |
c5aa993b | 8047 | regs[i] = 0; /* 'x' */ |
c906108c SS |
8048 | else |
8049 | regs[i] = fromhex (p[0]) * 16 + fromhex (p[1]); | |
8050 | p += 2; | |
8051 | } | |
8052 | ||
a744cf53 MS |
8053 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
8054 | { | |
8055 | struct packet_reg *r = &rsa->regs[i]; | |
9dc193c3 | 8056 | long reg_size = register_size (gdbarch, i); |
a744cf53 MS |
8057 | |
8058 | if (r->in_g_packet) | |
8059 | { | |
8d64371b | 8060 | if ((r->offset + reg_size) * 2 > strlen (rs->buf.data ())) |
a744cf53 MS |
8061 | /* This shouldn't happen - we adjusted in_g_packet above. */ |
8062 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8063 | _("unexpected end of 'g' packet reply")); |
a744cf53 MS |
8064 | else if (rs->buf[r->offset * 2] == 'x') |
8065 | { | |
8d64371b | 8066 | gdb_assert (r->offset * 2 < strlen (rs->buf.data ())); |
a744cf53 MS |
8067 | /* The register isn't available, mark it as such (at |
8068 | the same time setting the value to zero). */ | |
73e1c03f | 8069 | regcache->raw_supply (r->regnum, NULL); |
a744cf53 MS |
8070 | } |
8071 | else | |
73e1c03f | 8072 | regcache->raw_supply (r->regnum, regs + r->offset); |
a744cf53 MS |
8073 | } |
8074 | } | |
c906108c SS |
8075 | } |
8076 | ||
6b8edb51 PA |
8077 | void |
8078 | remote_target::fetch_registers_using_g (struct regcache *regcache) | |
29709017 DJ |
8079 | { |
8080 | send_g_packet (); | |
56be3814 | 8081 | process_g_packet (regcache); |
29709017 DJ |
8082 | } |
8083 | ||
e6e4e701 PA |
8084 | /* Make the remote selected traceframe match GDB's selected |
8085 | traceframe. */ | |
8086 | ||
6b8edb51 PA |
8087 | void |
8088 | remote_target::set_remote_traceframe () | |
e6e4e701 PA |
8089 | { |
8090 | int newnum; | |
262e1174 | 8091 | struct remote_state *rs = get_remote_state (); |
e6e4e701 | 8092 | |
262e1174 | 8093 | if (rs->remote_traceframe_number == get_traceframe_number ()) |
e6e4e701 PA |
8094 | return; |
8095 | ||
8096 | /* Avoid recursion, remote_trace_find calls us again. */ | |
262e1174 | 8097 | rs->remote_traceframe_number = get_traceframe_number (); |
e6e4e701 PA |
8098 | |
8099 | newnum = target_trace_find (tfind_number, | |
8100 | get_traceframe_number (), 0, 0, NULL); | |
8101 | ||
8102 | /* Should not happen. If it does, all bets are off. */ | |
8103 | if (newnum != get_traceframe_number ()) | |
8104 | warning (_("could not set remote traceframe")); | |
8105 | } | |
8106 | ||
f6ac5f3d PA |
8107 | void |
8108 | remote_target::fetch_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8109 | { |
ac7936df | 8110 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8111 | struct remote_state *rs = get_remote_state (); |
8112 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8113 | int i; |
8114 | ||
e6e4e701 | 8115 | set_remote_traceframe (); |
222312d3 | 8116 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8117 | |
8118 | if (regnum >= 0) | |
8119 | { | |
5cd63fda | 8120 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8121 | |
74ca34ce DJ |
8122 | gdb_assert (reg != NULL); |
8123 | ||
8124 | /* If this register might be in the 'g' packet, try that first - | |
8125 | we are likely to read more than one register. If this is the | |
8126 | first 'g' packet, we might be overly optimistic about its | |
8127 | contents, so fall back to 'p'. */ | |
8128 | if (reg->in_g_packet) | |
8129 | { | |
56be3814 | 8130 | fetch_registers_using_g (regcache); |
74ca34ce DJ |
8131 | if (reg->in_g_packet) |
8132 | return; | |
8133 | } | |
8134 | ||
56be3814 | 8135 | if (fetch_register_using_p (regcache, reg)) |
74ca34ce DJ |
8136 | return; |
8137 | ||
8138 | /* This register is not available. */ | |
73e1c03f | 8139 | regcache->raw_supply (reg->regnum, NULL); |
74ca34ce DJ |
8140 | |
8141 | return; | |
8142 | } | |
8143 | ||
56be3814 | 8144 | fetch_registers_using_g (regcache); |
74ca34ce | 8145 | |
5cd63fda | 8146 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8147 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8148 | if (!fetch_register_using_p (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8149 | { |
8150 | /* This register is not available. */ | |
73e1c03f | 8151 | regcache->raw_supply (i, NULL); |
74ca34ce DJ |
8152 | } |
8153 | } | |
8154 | ||
c906108c SS |
8155 | /* Prepare to store registers. Since we may send them all (using a |
8156 | 'G' request), we have to read out the ones we don't want to change | |
8157 | first. */ | |
8158 | ||
f6ac5f3d PA |
8159 | void |
8160 | remote_target::prepare_to_store (struct regcache *regcache) | |
c906108c | 8161 | { |
9d6eea31 PA |
8162 | struct remote_state *rs = get_remote_state (); |
8163 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); | |
cf0e1e0d | 8164 | int i; |
cf0e1e0d | 8165 | |
c906108c | 8166 | /* Make sure the entire registers array is valid. */ |
4082afcc | 8167 | switch (packet_support (PACKET_P)) |
5a2468f5 JM |
8168 | { |
8169 | case PACKET_DISABLE: | |
8170 | case PACKET_SUPPORT_UNKNOWN: | |
cf0e1e0d | 8171 | /* Make sure all the necessary registers are cached. */ |
ac7936df | 8172 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
ea9c271d | 8173 | if (rsa->regs[i].in_g_packet) |
0b47d985 | 8174 | regcache->raw_update (rsa->regs[i].regnum); |
5a2468f5 JM |
8175 | break; |
8176 | case PACKET_ENABLE: | |
8177 | break; | |
8178 | } | |
8179 | } | |
8180 | ||
ad10f812 | 8181 | /* Helper: Attempt to store REGNUM using the P packet. Return fail IFF |
23860348 | 8182 | packet was not recognized. */ |
5a2468f5 | 8183 | |
6b8edb51 PA |
8184 | int |
8185 | remote_target::store_register_using_P (const struct regcache *regcache, | |
8186 | packet_reg *reg) | |
5a2468f5 | 8187 | { |
ac7936df | 8188 | struct gdbarch *gdbarch = regcache->arch (); |
d01949b6 | 8189 | struct remote_state *rs = get_remote_state (); |
5a2468f5 | 8190 | /* Try storing a single register. */ |
8d64371b | 8191 | char *buf = rs->buf.data (); |
9890e433 | 8192 | gdb_byte *regp = (gdb_byte *) alloca (register_size (gdbarch, reg->regnum)); |
5a2468f5 | 8193 | char *p; |
5a2468f5 | 8194 | |
4082afcc | 8195 | if (packet_support (PACKET_P) == PACKET_DISABLE) |
74ca34ce DJ |
8196 | return 0; |
8197 | ||
8198 | if (reg->pnum == -1) | |
8199 | return 0; | |
8200 | ||
ea9c271d | 8201 | xsnprintf (buf, get_remote_packet_size (), "P%s=", phex_nz (reg->pnum, 0)); |
5a2468f5 | 8202 | p = buf + strlen (buf); |
34a79281 | 8203 | regcache->raw_collect (reg->regnum, regp); |
4a22f64d | 8204 | bin2hex (regp, p, register_size (gdbarch, reg->regnum)); |
1f4437a4 | 8205 | putpkt (rs->buf); |
8d64371b | 8206 | getpkt (&rs->buf, 0); |
5a2468f5 | 8207 | |
74ca34ce DJ |
8208 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_P])) |
8209 | { | |
8210 | case PACKET_OK: | |
8211 | return 1; | |
8212 | case PACKET_ERROR: | |
27a9c0bf | 8213 | error (_("Could not write register \"%s\"; remote failure reply '%s'"), |
8d64371b | 8214 | gdbarch_register_name (gdbarch, reg->regnum), rs->buf.data ()); |
74ca34ce DJ |
8215 | case PACKET_UNKNOWN: |
8216 | return 0; | |
8217 | default: | |
8218 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
8219 | } | |
c906108c SS |
8220 | } |
8221 | ||
23860348 MS |
8222 | /* Store register REGNUM, or all registers if REGNUM == -1, from the |
8223 | contents of the register cache buffer. FIXME: ignores errors. */ | |
c906108c | 8224 | |
6b8edb51 PA |
8225 | void |
8226 | remote_target::store_registers_using_G (const struct regcache *regcache) | |
c906108c | 8227 | { |
d01949b6 | 8228 | struct remote_state *rs = get_remote_state (); |
9d6eea31 | 8229 | remote_arch_state *rsa = rs->get_remote_arch_state (regcache->arch ()); |
cfd77fa1 | 8230 | gdb_byte *regs; |
c906108c SS |
8231 | char *p; |
8232 | ||
193cb69f AC |
8233 | /* Extract all the registers in the regcache copying them into a |
8234 | local buffer. */ | |
8235 | { | |
b323314b | 8236 | int i; |
a744cf53 | 8237 | |
224c3ddb | 8238 | regs = (gdb_byte *) alloca (rsa->sizeof_g_packet); |
ea9c271d | 8239 | memset (regs, 0, rsa->sizeof_g_packet); |
ac7936df | 8240 | for (i = 0; i < gdbarch_num_regs (regcache->arch ()); i++) |
193cb69f | 8241 | { |
ea9c271d | 8242 | struct packet_reg *r = &rsa->regs[i]; |
a744cf53 | 8243 | |
b323314b | 8244 | if (r->in_g_packet) |
34a79281 | 8245 | regcache->raw_collect (r->regnum, regs + r->offset); |
193cb69f AC |
8246 | } |
8247 | } | |
c906108c SS |
8248 | |
8249 | /* Command describes registers byte by byte, | |
8250 | each byte encoded as two hex characters. */ | |
8d64371b | 8251 | p = rs->buf.data (); |
193cb69f | 8252 | *p++ = 'G'; |
74ca34ce | 8253 | bin2hex (regs, p, rsa->sizeof_g_packet); |
1f4437a4 | 8254 | putpkt (rs->buf); |
8d64371b | 8255 | getpkt (&rs->buf, 0); |
1f4437a4 | 8256 | if (packet_check_result (rs->buf) == PACKET_ERROR) |
27a9c0bf | 8257 | error (_("Could not write registers; remote failure reply '%s'"), |
8d64371b | 8258 | rs->buf.data ()); |
c906108c | 8259 | } |
74ca34ce DJ |
8260 | |
8261 | /* Store register REGNUM, or all registers if REGNUM == -1, from the contents | |
8262 | of the register cache buffer. FIXME: ignores errors. */ | |
8263 | ||
f6ac5f3d PA |
8264 | void |
8265 | remote_target::store_registers (struct regcache *regcache, int regnum) | |
74ca34ce | 8266 | { |
5cd63fda | 8267 | struct gdbarch *gdbarch = regcache->arch (); |
9d6eea31 PA |
8268 | struct remote_state *rs = get_remote_state (); |
8269 | remote_arch_state *rsa = rs->get_remote_arch_state (gdbarch); | |
74ca34ce DJ |
8270 | int i; |
8271 | ||
e6e4e701 | 8272 | set_remote_traceframe (); |
222312d3 | 8273 | set_general_thread (regcache->ptid ()); |
74ca34ce DJ |
8274 | |
8275 | if (regnum >= 0) | |
8276 | { | |
5cd63fda | 8277 | packet_reg *reg = packet_reg_from_regnum (gdbarch, rsa, regnum); |
a744cf53 | 8278 | |
74ca34ce DJ |
8279 | gdb_assert (reg != NULL); |
8280 | ||
8281 | /* Always prefer to store registers using the 'P' packet if | |
8282 | possible; we often change only a small number of registers. | |
8283 | Sometimes we change a larger number; we'd need help from a | |
8284 | higher layer to know to use 'G'. */ | |
56be3814 | 8285 | if (store_register_using_P (regcache, reg)) |
74ca34ce DJ |
8286 | return; |
8287 | ||
8288 | /* For now, don't complain if we have no way to write the | |
8289 | register. GDB loses track of unavailable registers too | |
8290 | easily. Some day, this may be an error. We don't have | |
0df8b418 | 8291 | any way to read the register, either... */ |
74ca34ce DJ |
8292 | if (!reg->in_g_packet) |
8293 | return; | |
8294 | ||
56be3814 | 8295 | store_registers_using_G (regcache); |
74ca34ce DJ |
8296 | return; |
8297 | } | |
8298 | ||
56be3814 | 8299 | store_registers_using_G (regcache); |
74ca34ce | 8300 | |
5cd63fda | 8301 | for (i = 0; i < gdbarch_num_regs (gdbarch); i++) |
74ca34ce | 8302 | if (!rsa->regs[i].in_g_packet) |
56be3814 | 8303 | if (!store_register_using_P (regcache, &rsa->regs[i])) |
74ca34ce DJ |
8304 | /* See above for why we do not issue an error here. */ |
8305 | continue; | |
8306 | } | |
c906108c SS |
8307 | \f |
8308 | ||
8309 | /* Return the number of hex digits in num. */ | |
8310 | ||
8311 | static int | |
fba45db2 | 8312 | hexnumlen (ULONGEST num) |
c906108c SS |
8313 | { |
8314 | int i; | |
8315 | ||
8316 | for (i = 0; num != 0; i++) | |
8317 | num >>= 4; | |
8318 | ||
325fac50 | 8319 | return std::max (i, 1); |
c906108c SS |
8320 | } |
8321 | ||
2df3850c | 8322 | /* Set BUF to the minimum number of hex digits representing NUM. */ |
c906108c SS |
8323 | |
8324 | static int | |
fba45db2 | 8325 | hexnumstr (char *buf, ULONGEST num) |
c906108c | 8326 | { |
c906108c | 8327 | int len = hexnumlen (num); |
a744cf53 | 8328 | |
2df3850c JM |
8329 | return hexnumnstr (buf, num, len); |
8330 | } | |
8331 | ||
c906108c | 8332 | |
2df3850c | 8333 | /* Set BUF to the hex digits representing NUM, padded to WIDTH characters. */ |
c906108c | 8334 | |
2df3850c | 8335 | static int |
fba45db2 | 8336 | hexnumnstr (char *buf, ULONGEST num, int width) |
2df3850c JM |
8337 | { |
8338 | int i; | |
8339 | ||
8340 | buf[width] = '\0'; | |
8341 | ||
8342 | for (i = width - 1; i >= 0; i--) | |
c906108c | 8343 | { |
c5aa993b | 8344 | buf[i] = "0123456789abcdef"[(num & 0xf)]; |
c906108c SS |
8345 | num >>= 4; |
8346 | } | |
8347 | ||
2df3850c | 8348 | return width; |
c906108c SS |
8349 | } |
8350 | ||
23860348 | 8351 | /* Mask all but the least significant REMOTE_ADDRESS_SIZE bits. */ |
c906108c SS |
8352 | |
8353 | static CORE_ADDR | |
fba45db2 | 8354 | remote_address_masked (CORE_ADDR addr) |
c906108c | 8355 | { |
883b9c6c | 8356 | unsigned int address_size = remote_address_size; |
a744cf53 | 8357 | |
911c95a5 UW |
8358 | /* If "remoteaddresssize" was not set, default to target address size. */ |
8359 | if (!address_size) | |
f5656ead | 8360 | address_size = gdbarch_addr_bit (target_gdbarch ()); |
911c95a5 UW |
8361 | |
8362 | if (address_size > 0 | |
8363 | && address_size < (sizeof (ULONGEST) * 8)) | |
c906108c SS |
8364 | { |
8365 | /* Only create a mask when that mask can safely be constructed | |
23860348 | 8366 | in a ULONGEST variable. */ |
c906108c | 8367 | ULONGEST mask = 1; |
a744cf53 | 8368 | |
911c95a5 | 8369 | mask = (mask << address_size) - 1; |
c906108c SS |
8370 | addr &= mask; |
8371 | } | |
8372 | return addr; | |
8373 | } | |
8374 | ||
8375 | /* Determine whether the remote target supports binary downloading. | |
8376 | This is accomplished by sending a no-op memory write of zero length | |
8377 | to the target at the specified address. It does not suffice to send | |
23860348 MS |
8378 | the whole packet, since many stubs strip the eighth bit and |
8379 | subsequently compute a wrong checksum, which causes real havoc with | |
8380 | remote_write_bytes. | |
7a292a7a | 8381 | |
96baa820 | 8382 | NOTE: This can still lose if the serial line is not eight-bit |
0df8b418 | 8383 | clean. In cases like this, the user should clear "remote |
23860348 | 8384 | X-packet". */ |
96baa820 | 8385 | |
6b8edb51 PA |
8386 | void |
8387 | remote_target::check_binary_download (CORE_ADDR addr) | |
c906108c | 8388 | { |
d01949b6 | 8389 | struct remote_state *rs = get_remote_state (); |
24b06219 | 8390 | |
4082afcc | 8391 | switch (packet_support (PACKET_X)) |
c906108c | 8392 | { |
96baa820 JM |
8393 | case PACKET_DISABLE: |
8394 | break; | |
8395 | case PACKET_ENABLE: | |
8396 | break; | |
8397 | case PACKET_SUPPORT_UNKNOWN: | |
8398 | { | |
96baa820 | 8399 | char *p; |
802188a7 | 8400 | |
8d64371b | 8401 | p = rs->buf.data (); |
96baa820 JM |
8402 | *p++ = 'X'; |
8403 | p += hexnumstr (p, (ULONGEST) addr); | |
8404 | *p++ = ','; | |
8405 | p += hexnumstr (p, (ULONGEST) 0); | |
8406 | *p++ = ':'; | |
8407 | *p = '\0'; | |
802188a7 | 8408 | |
8d64371b TT |
8409 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8410 | getpkt (&rs->buf, 0); | |
c906108c | 8411 | |
2e9f7625 | 8412 | if (rs->buf[0] == '\0') |
96baa820 JM |
8413 | { |
8414 | if (remote_debug) | |
8415 | fprintf_unfiltered (gdb_stdlog, | |
3e43a32a MS |
8416 | "binary downloading NOT " |
8417 | "supported by target\n"); | |
444abaca | 8418 | remote_protocol_packets[PACKET_X].support = PACKET_DISABLE; |
96baa820 JM |
8419 | } |
8420 | else | |
8421 | { | |
8422 | if (remote_debug) | |
8423 | fprintf_unfiltered (gdb_stdlog, | |
64b9b334 | 8424 | "binary downloading supported by target\n"); |
444abaca | 8425 | remote_protocol_packets[PACKET_X].support = PACKET_ENABLE; |
96baa820 JM |
8426 | } |
8427 | break; | |
8428 | } | |
c906108c SS |
8429 | } |
8430 | } | |
8431 | ||
124e13d9 SM |
8432 | /* Helper function to resize the payload in order to try to get a good |
8433 | alignment. We try to write an amount of data such that the next write will | |
8434 | start on an address aligned on REMOTE_ALIGN_WRITES. */ | |
8435 | ||
8436 | static int | |
8437 | align_for_efficient_write (int todo, CORE_ADDR memaddr) | |
8438 | { | |
8439 | return ((memaddr + todo) & ~(REMOTE_ALIGN_WRITES - 1)) - memaddr; | |
8440 | } | |
8441 | ||
c906108c SS |
8442 | /* Write memory data directly to the remote machine. |
8443 | This does not inform the data cache; the data cache uses this. | |
a76d924d | 8444 | HEADER is the starting part of the packet. |
c906108c SS |
8445 | MEMADDR is the address in the remote memory space. |
8446 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8447 | LEN_UNITS is the number of addressable units to write. |
8448 | UNIT_SIZE is the length in bytes of an addressable unit. | |
a76d924d DJ |
8449 | PACKET_FORMAT should be either 'X' or 'M', and indicates if we |
8450 | should send data as binary ('X'), or hex-encoded ('M'). | |
8451 | ||
8452 | The function creates packet of the form | |
8453 | <HEADER><ADDRESS>,<LENGTH>:<DATA> | |
8454 | ||
124e13d9 | 8455 | where encoding of <DATA> is terminated by PACKET_FORMAT. |
a76d924d DJ |
8456 | |
8457 | If USE_LENGTH is 0, then the <LENGTH> field and the preceding comma | |
8458 | are omitted. | |
8459 | ||
9b409511 | 8460 | Return the transferred status, error or OK (an |
124e13d9 SM |
8461 | 'enum target_xfer_status' value). Save the number of addressable units |
8462 | transferred in *XFERED_LEN_UNITS. Only transfer a single packet. | |
8463 | ||
8464 | On a platform with an addressable memory size of 2 bytes (UNIT_SIZE == 2), an | |
8465 | exchange between gdb and the stub could look like (?? in place of the | |
8466 | checksum): | |
8467 | ||
8468 | -> $m1000,4#?? | |
8469 | <- aaaabbbbccccdddd | |
8470 | ||
8471 | -> $M1000,3:eeeeffffeeee#?? | |
8472 | <- OK | |
8473 | ||
8474 | -> $m1000,4#?? | |
8475 | <- eeeeffffeeeedddd */ | |
c906108c | 8476 | |
6b8edb51 PA |
8477 | target_xfer_status |
8478 | remote_target::remote_write_bytes_aux (const char *header, CORE_ADDR memaddr, | |
8479 | const gdb_byte *myaddr, | |
8480 | ULONGEST len_units, | |
8481 | int unit_size, | |
8482 | ULONGEST *xfered_len_units, | |
8483 | char packet_format, int use_length) | |
c906108c | 8484 | { |
6d820c5c | 8485 | struct remote_state *rs = get_remote_state (); |
cfd77fa1 | 8486 | char *p; |
a76d924d DJ |
8487 | char *plen = NULL; |
8488 | int plenlen = 0; | |
124e13d9 SM |
8489 | int todo_units; |
8490 | int units_written; | |
8491 | int payload_capacity_bytes; | |
8492 | int payload_length_bytes; | |
a76d924d DJ |
8493 | |
8494 | if (packet_format != 'X' && packet_format != 'M') | |
8495 | internal_error (__FILE__, __LINE__, | |
9b20d036 | 8496 | _("remote_write_bytes_aux: bad packet format")); |
c906108c | 8497 | |
124e13d9 | 8498 | if (len_units == 0) |
9b409511 | 8499 | return TARGET_XFER_EOF; |
b2182ed2 | 8500 | |
124e13d9 | 8501 | payload_capacity_bytes = get_memory_write_packet_size (); |
2bc416ba | 8502 | |
6d820c5c DJ |
8503 | /* The packet buffer will be large enough for the payload; |
8504 | get_memory_packet_size ensures this. */ | |
a76d924d | 8505 | rs->buf[0] = '\0'; |
c906108c | 8506 | |
a257b5bb | 8507 | /* Compute the size of the actual payload by subtracting out the |
0df8b418 MS |
8508 | packet header and footer overhead: "$M<memaddr>,<len>:...#nn". */ |
8509 | ||
124e13d9 | 8510 | payload_capacity_bytes -= strlen ("$,:#NN"); |
a76d924d | 8511 | if (!use_length) |
0df8b418 | 8512 | /* The comma won't be used. */ |
124e13d9 SM |
8513 | payload_capacity_bytes += 1; |
8514 | payload_capacity_bytes -= strlen (header); | |
8515 | payload_capacity_bytes -= hexnumlen (memaddr); | |
c906108c | 8516 | |
a76d924d | 8517 | /* Construct the packet excluding the data: "<header><memaddr>,<len>:". */ |
917317f4 | 8518 | |
8d64371b TT |
8519 | strcat (rs->buf.data (), header); |
8520 | p = rs->buf.data () + strlen (header); | |
a76d924d DJ |
8521 | |
8522 | /* Compute a best guess of the number of bytes actually transfered. */ | |
8523 | if (packet_format == 'X') | |
c906108c | 8524 | { |
23860348 | 8525 | /* Best guess at number of bytes that will fit. */ |
325fac50 PA |
8526 | todo_units = std::min (len_units, |
8527 | (ULONGEST) payload_capacity_bytes / unit_size); | |
a76d924d | 8528 | if (use_length) |
124e13d9 | 8529 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 | 8530 | todo_units = std::min (todo_units, payload_capacity_bytes / unit_size); |
a76d924d DJ |
8531 | } |
8532 | else | |
8533 | { | |
124e13d9 | 8534 | /* Number of bytes that will fit. */ |
325fac50 PA |
8535 | todo_units |
8536 | = std::min (len_units, | |
8537 | (ULONGEST) (payload_capacity_bytes / unit_size) / 2); | |
a76d924d | 8538 | if (use_length) |
124e13d9 | 8539 | payload_capacity_bytes -= hexnumlen (todo_units); |
325fac50 PA |
8540 | todo_units = std::min (todo_units, |
8541 | (payload_capacity_bytes / unit_size) / 2); | |
917317f4 | 8542 | } |
a76d924d | 8543 | |
124e13d9 | 8544 | if (todo_units <= 0) |
3de11b2e | 8545 | internal_error (__FILE__, __LINE__, |
405f8e94 | 8546 | _("minimum packet size too small to write data")); |
802188a7 | 8547 | |
6765f3e5 DJ |
8548 | /* If we already need another packet, then try to align the end |
8549 | of this packet to a useful boundary. */ | |
124e13d9 SM |
8550 | if (todo_units > 2 * REMOTE_ALIGN_WRITES && todo_units < len_units) |
8551 | todo_units = align_for_efficient_write (todo_units, memaddr); | |
6765f3e5 | 8552 | |
a257b5bb | 8553 | /* Append "<memaddr>". */ |
917317f4 JM |
8554 | memaddr = remote_address_masked (memaddr); |
8555 | p += hexnumstr (p, (ULONGEST) memaddr); | |
a257b5bb | 8556 | |
a76d924d DJ |
8557 | if (use_length) |
8558 | { | |
8559 | /* Append ",". */ | |
8560 | *p++ = ','; | |
802188a7 | 8561 | |
124e13d9 SM |
8562 | /* Append the length and retain its location and size. It may need to be |
8563 | adjusted once the packet body has been created. */ | |
a76d924d | 8564 | plen = p; |
124e13d9 | 8565 | plenlen = hexnumstr (p, (ULONGEST) todo_units); |
a76d924d DJ |
8566 | p += plenlen; |
8567 | } | |
a257b5bb AC |
8568 | |
8569 | /* Append ":". */ | |
917317f4 JM |
8570 | *p++ = ':'; |
8571 | *p = '\0'; | |
802188a7 | 8572 | |
a257b5bb | 8573 | /* Append the packet body. */ |
a76d924d | 8574 | if (packet_format == 'X') |
917317f4 | 8575 | { |
917317f4 JM |
8576 | /* Binary mode. Send target system values byte by byte, in |
8577 | increasing byte addresses. Only escape certain critical | |
8578 | characters. */ | |
124e13d9 SM |
8579 | payload_length_bytes = |
8580 | remote_escape_output (myaddr, todo_units, unit_size, (gdb_byte *) p, | |
8581 | &units_written, payload_capacity_bytes); | |
6765f3e5 | 8582 | |
124e13d9 | 8583 | /* If not all TODO units fit, then we'll need another packet. Make |
9b7194bc DJ |
8584 | a second try to keep the end of the packet aligned. Don't do |
8585 | this if the packet is tiny. */ | |
124e13d9 | 8586 | if (units_written < todo_units && units_written > 2 * REMOTE_ALIGN_WRITES) |
6765f3e5 | 8587 | { |
124e13d9 SM |
8588 | int new_todo_units; |
8589 | ||
8590 | new_todo_units = align_for_efficient_write (units_written, memaddr); | |
8591 | ||
8592 | if (new_todo_units != units_written) | |
8593 | payload_length_bytes = | |
8594 | remote_escape_output (myaddr, new_todo_units, unit_size, | |
8595 | (gdb_byte *) p, &units_written, | |
8596 | payload_capacity_bytes); | |
6765f3e5 DJ |
8597 | } |
8598 | ||
124e13d9 SM |
8599 | p += payload_length_bytes; |
8600 | if (use_length && units_written < todo_units) | |
c906108c | 8601 | { |
802188a7 | 8602 | /* Escape chars have filled up the buffer prematurely, |
124e13d9 | 8603 | and we have actually sent fewer units than planned. |
917317f4 JM |
8604 | Fix-up the length field of the packet. Use the same |
8605 | number of characters as before. */ | |
124e13d9 SM |
8606 | plen += hexnumnstr (plen, (ULONGEST) units_written, |
8607 | plenlen); | |
917317f4 | 8608 | *plen = ':'; /* overwrite \0 from hexnumnstr() */ |
c906108c | 8609 | } |
a76d924d DJ |
8610 | } |
8611 | else | |
8612 | { | |
917317f4 JM |
8613 | /* Normal mode: Send target system values byte by byte, in |
8614 | increasing byte addresses. Each byte is encoded as a two hex | |
8615 | value. */ | |
124e13d9 SM |
8616 | p += 2 * bin2hex (myaddr, p, todo_units * unit_size); |
8617 | units_written = todo_units; | |
c906108c | 8618 | } |
802188a7 | 8619 | |
8d64371b TT |
8620 | putpkt_binary (rs->buf.data (), (int) (p - rs->buf.data ())); |
8621 | getpkt (&rs->buf, 0); | |
802188a7 | 8622 | |
2e9f7625 | 8623 | if (rs->buf[0] == 'E') |
00d84524 | 8624 | return TARGET_XFER_E_IO; |
802188a7 | 8625 | |
124e13d9 SM |
8626 | /* Return UNITS_WRITTEN, not TODO_UNITS, in case escape chars caused us to |
8627 | send fewer units than we'd planned. */ | |
8628 | *xfered_len_units = (ULONGEST) units_written; | |
92ffd475 | 8629 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
8630 | } |
8631 | ||
a76d924d DJ |
8632 | /* Write memory data directly to the remote machine. |
8633 | This does not inform the data cache; the data cache uses this. | |
8634 | MEMADDR is the address in the remote memory space. | |
8635 | MYADDR is the address of the buffer in our space. | |
8636 | LEN is the number of bytes. | |
8637 | ||
9b409511 YQ |
8638 | Return the transferred status, error or OK (an |
8639 | 'enum target_xfer_status' value). Save the number of bytes | |
8640 | transferred in *XFERED_LEN. Only transfer a single packet. */ | |
a76d924d | 8641 | |
6b8edb51 PA |
8642 | target_xfer_status |
8643 | remote_target::remote_write_bytes (CORE_ADDR memaddr, const gdb_byte *myaddr, | |
8644 | ULONGEST len, int unit_size, | |
8645 | ULONGEST *xfered_len) | |
a76d924d | 8646 | { |
a121b7c1 | 8647 | const char *packet_format = NULL; |
a76d924d DJ |
8648 | |
8649 | /* Check whether the target supports binary download. */ | |
8650 | check_binary_download (memaddr); | |
8651 | ||
4082afcc | 8652 | switch (packet_support (PACKET_X)) |
a76d924d DJ |
8653 | { |
8654 | case PACKET_ENABLE: | |
8655 | packet_format = "X"; | |
8656 | break; | |
8657 | case PACKET_DISABLE: | |
8658 | packet_format = "M"; | |
8659 | break; | |
8660 | case PACKET_SUPPORT_UNKNOWN: | |
8661 | internal_error (__FILE__, __LINE__, | |
8662 | _("remote_write_bytes: bad internal state")); | |
8663 | default: | |
8664 | internal_error (__FILE__, __LINE__, _("bad switch")); | |
8665 | } | |
8666 | ||
8667 | return remote_write_bytes_aux (packet_format, | |
124e13d9 | 8668 | memaddr, myaddr, len, unit_size, xfered_len, |
9b409511 | 8669 | packet_format[0], 1); |
a76d924d DJ |
8670 | } |
8671 | ||
9217e74e YQ |
8672 | /* Read memory data directly from the remote machine. |
8673 | This does not use the data cache; the data cache uses this. | |
8674 | MEMADDR is the address in the remote memory space. | |
8675 | MYADDR is the address of the buffer in our space. | |
124e13d9 SM |
8676 | LEN_UNITS is the number of addressable memory units to read.. |
8677 | UNIT_SIZE is the length in bytes of an addressable unit. | |
9217e74e YQ |
8678 | |
8679 | Return the transferred status, error or OK (an | |
8680 | 'enum target_xfer_status' value). Save the number of bytes | |
124e13d9 SM |
8681 | transferred in *XFERED_LEN_UNITS. |
8682 | ||
8683 | See the comment of remote_write_bytes_aux for an example of | |
8684 | memory read/write exchange between gdb and the stub. */ | |
9217e74e | 8685 | |
6b8edb51 PA |
8686 | target_xfer_status |
8687 | remote_target::remote_read_bytes_1 (CORE_ADDR memaddr, gdb_byte *myaddr, | |
8688 | ULONGEST len_units, | |
8689 | int unit_size, ULONGEST *xfered_len_units) | |
9217e74e YQ |
8690 | { |
8691 | struct remote_state *rs = get_remote_state (); | |
124e13d9 | 8692 | int buf_size_bytes; /* Max size of packet output buffer. */ |
9217e74e | 8693 | char *p; |
124e13d9 SM |
8694 | int todo_units; |
8695 | int decoded_bytes; | |
9217e74e | 8696 | |
124e13d9 | 8697 | buf_size_bytes = get_memory_read_packet_size (); |
9217e74e YQ |
8698 | /* The packet buffer will be large enough for the payload; |
8699 | get_memory_packet_size ensures this. */ | |
8700 | ||
124e13d9 | 8701 | /* Number of units that will fit. */ |
325fac50 PA |
8702 | todo_units = std::min (len_units, |
8703 | (ULONGEST) (buf_size_bytes / unit_size) / 2); | |
9217e74e YQ |
8704 | |
8705 | /* Construct "m"<memaddr>","<len>". */ | |
8706 | memaddr = remote_address_masked (memaddr); | |
8d64371b | 8707 | p = rs->buf.data (); |
9217e74e YQ |
8708 | *p++ = 'm'; |
8709 | p += hexnumstr (p, (ULONGEST) memaddr); | |
8710 | *p++ = ','; | |
124e13d9 | 8711 | p += hexnumstr (p, (ULONGEST) todo_units); |
9217e74e YQ |
8712 | *p = '\0'; |
8713 | putpkt (rs->buf); | |
8d64371b | 8714 | getpkt (&rs->buf, 0); |
9217e74e YQ |
8715 | if (rs->buf[0] == 'E' |
8716 | && isxdigit (rs->buf[1]) && isxdigit (rs->buf[2]) | |
8717 | && rs->buf[3] == '\0') | |
8718 | return TARGET_XFER_E_IO; | |
8719 | /* Reply describes memory byte by byte, each byte encoded as two hex | |
8720 | characters. */ | |
8d64371b | 8721 | p = rs->buf.data (); |
124e13d9 | 8722 | decoded_bytes = hex2bin (p, myaddr, todo_units * unit_size); |
9217e74e | 8723 | /* Return what we have. Let higher layers handle partial reads. */ |
124e13d9 | 8724 | *xfered_len_units = (ULONGEST) (decoded_bytes / unit_size); |
92ffd475 | 8725 | return (*xfered_len_units != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
9217e74e YQ |
8726 | } |
8727 | ||
b55fbac4 YQ |
8728 | /* Using the set of read-only target sections of remote, read live |
8729 | read-only memory. | |
8acf9577 YQ |
8730 | |
8731 | For interface/parameters/return description see target.h, | |
8732 | to_xfer_partial. */ | |
8733 | ||
6b8edb51 PA |
8734 | target_xfer_status |
8735 | remote_target::remote_xfer_live_readonly_partial (gdb_byte *readbuf, | |
8736 | ULONGEST memaddr, | |
8737 | ULONGEST len, | |
8738 | int unit_size, | |
8739 | ULONGEST *xfered_len) | |
8acf9577 YQ |
8740 | { |
8741 | struct target_section *secp; | |
8742 | struct target_section_table *table; | |
8743 | ||
6b8edb51 | 8744 | secp = target_section_by_addr (this, memaddr); |
8acf9577 | 8745 | if (secp != NULL |
fd361982 | 8746 | && (bfd_section_flags (secp->the_bfd_section) & SEC_READONLY)) |
8acf9577 YQ |
8747 | { |
8748 | struct target_section *p; | |
8749 | ULONGEST memend = memaddr + len; | |
8750 | ||
6b8edb51 | 8751 | table = target_get_section_table (this); |
8acf9577 YQ |
8752 | |
8753 | for (p = table->sections; p < table->sections_end; p++) | |
8754 | { | |
8755 | if (memaddr >= p->addr) | |
8756 | { | |
8757 | if (memend <= p->endaddr) | |
8758 | { | |
8759 | /* Entire transfer is within this section. */ | |
124e13d9 | 8760 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8761 | xfered_len); |
8acf9577 YQ |
8762 | } |
8763 | else if (memaddr >= p->endaddr) | |
8764 | { | |
8765 | /* This section ends before the transfer starts. */ | |
8766 | continue; | |
8767 | } | |
8768 | else | |
8769 | { | |
8770 | /* This section overlaps the transfer. Just do half. */ | |
8771 | len = p->endaddr - memaddr; | |
124e13d9 | 8772 | return remote_read_bytes_1 (memaddr, readbuf, len, unit_size, |
b55fbac4 | 8773 | xfered_len); |
8acf9577 YQ |
8774 | } |
8775 | } | |
8776 | } | |
8777 | } | |
8778 | ||
8779 | return TARGET_XFER_EOF; | |
8780 | } | |
8781 | ||
9217e74e YQ |
8782 | /* Similar to remote_read_bytes_1, but it reads from the remote stub |
8783 | first if the requested memory is unavailable in traceframe. | |
8784 | Otherwise, fall back to remote_read_bytes_1. */ | |
c906108c | 8785 | |
6b8edb51 PA |
8786 | target_xfer_status |
8787 | remote_target::remote_read_bytes (CORE_ADDR memaddr, | |
8788 | gdb_byte *myaddr, ULONGEST len, int unit_size, | |
8789 | ULONGEST *xfered_len) | |
c906108c | 8790 | { |
6b6aa828 | 8791 | if (len == 0) |
96c4f946 | 8792 | return TARGET_XFER_EOF; |
b2182ed2 | 8793 | |
8acf9577 YQ |
8794 | if (get_traceframe_number () != -1) |
8795 | { | |
a79b1bc6 | 8796 | std::vector<mem_range> available; |
8acf9577 YQ |
8797 | |
8798 | /* If we fail to get the set of available memory, then the | |
8799 | target does not support querying traceframe info, and so we | |
8800 | attempt reading from the traceframe anyway (assuming the | |
8801 | target implements the old QTro packet then). */ | |
8802 | if (traceframe_available_memory (&available, memaddr, len)) | |
8803 | { | |
a79b1bc6 | 8804 | if (available.empty () || available[0].start != memaddr) |
8acf9577 YQ |
8805 | { |
8806 | enum target_xfer_status res; | |
8807 | ||
8808 | /* Don't read into the traceframe's available | |
8809 | memory. */ | |
a79b1bc6 | 8810 | if (!available.empty ()) |
8acf9577 YQ |
8811 | { |
8812 | LONGEST oldlen = len; | |
8813 | ||
a79b1bc6 | 8814 | len = available[0].start - memaddr; |
8acf9577 YQ |
8815 | gdb_assert (len <= oldlen); |
8816 | } | |
8817 | ||
8acf9577 | 8818 | /* This goes through the topmost target again. */ |
6b8edb51 | 8819 | res = remote_xfer_live_readonly_partial (myaddr, memaddr, |
124e13d9 | 8820 | len, unit_size, xfered_len); |
8acf9577 YQ |
8821 | if (res == TARGET_XFER_OK) |
8822 | return TARGET_XFER_OK; | |
8823 | else | |
8824 | { | |
8825 | /* No use trying further, we know some memory starting | |
8826 | at MEMADDR isn't available. */ | |
8827 | *xfered_len = len; | |
92ffd475 PC |
8828 | return (*xfered_len != 0) ? |
8829 | TARGET_XFER_UNAVAILABLE : TARGET_XFER_EOF; | |
8acf9577 YQ |
8830 | } |
8831 | } | |
8832 | ||
8833 | /* Don't try to read more than how much is available, in | |
8834 | case the target implements the deprecated QTro packet to | |
8835 | cater for older GDBs (the target's knowledge of read-only | |
8836 | sections may be outdated by now). */ | |
a79b1bc6 | 8837 | len = available[0].length; |
8acf9577 YQ |
8838 | } |
8839 | } | |
8840 | ||
124e13d9 | 8841 | return remote_read_bytes_1 (memaddr, myaddr, len, unit_size, xfered_len); |
c906108c | 8842 | } |
74531fed | 8843 | |
c906108c | 8844 | \f |
c906108c | 8845 | |
a76d924d DJ |
8846 | /* Sends a packet with content determined by the printf format string |
8847 | FORMAT and the remaining arguments, then gets the reply. Returns | |
8848 | whether the packet was a success, a failure, or unknown. */ | |
8849 | ||
6b8edb51 PA |
8850 | packet_result |
8851 | remote_target::remote_send_printf (const char *format, ...) | |
a76d924d DJ |
8852 | { |
8853 | struct remote_state *rs = get_remote_state (); | |
8854 | int max_size = get_remote_packet_size (); | |
a76d924d | 8855 | va_list ap; |
a744cf53 | 8856 | |
a76d924d DJ |
8857 | va_start (ap, format); |
8858 | ||
8859 | rs->buf[0] = '\0'; | |
8d64371b | 8860 | int size = vsnprintf (rs->buf.data (), max_size, format, ap); |
33b031ce GB |
8861 | |
8862 | va_end (ap); | |
8863 | ||
8864 | if (size >= max_size) | |
9b20d036 | 8865 | internal_error (__FILE__, __LINE__, _("Too long remote packet.")); |
a76d924d DJ |
8866 | |
8867 | if (putpkt (rs->buf) < 0) | |
8868 | error (_("Communication problem with target.")); | |
8869 | ||
8870 | rs->buf[0] = '\0'; | |
8d64371b | 8871 | getpkt (&rs->buf, 0); |
a76d924d DJ |
8872 | |
8873 | return packet_check_result (rs->buf); | |
8874 | } | |
8875 | ||
a76d924d DJ |
8876 | /* Flash writing can take quite some time. We'll set |
8877 | effectively infinite timeout for flash operations. | |
8878 | In future, we'll need to decide on a better approach. */ | |
8879 | static const int remote_flash_timeout = 1000; | |
8880 | ||
f6ac5f3d PA |
8881 | void |
8882 | remote_target::flash_erase (ULONGEST address, LONGEST length) | |
a76d924d | 8883 | { |
f5656ead | 8884 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
a76d924d | 8885 | enum packet_result ret; |
2ec845e7 TT |
8886 | scoped_restore restore_timeout |
8887 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
a76d924d DJ |
8888 | |
8889 | ret = remote_send_printf ("vFlashErase:%s,%s", | |
5af949e3 | 8890 | phex (address, addr_size), |
a76d924d DJ |
8891 | phex (length, 4)); |
8892 | switch (ret) | |
8893 | { | |
8894 | case PACKET_UNKNOWN: | |
8895 | error (_("Remote target does not support flash erase")); | |
8896 | case PACKET_ERROR: | |
8897 | error (_("Error erasing flash with vFlashErase packet")); | |
8898 | default: | |
8899 | break; | |
8900 | } | |
a76d924d DJ |
8901 | } |
8902 | ||
6b8edb51 PA |
8903 | target_xfer_status |
8904 | remote_target::remote_flash_write (ULONGEST address, | |
8905 | ULONGEST length, ULONGEST *xfered_len, | |
8906 | const gdb_byte *data) | |
a76d924d | 8907 | { |
2ec845e7 TT |
8908 | scoped_restore restore_timeout |
8909 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8910 | return remote_write_bytes_aux ("vFlashWrite:", address, data, length, 1, | |
8911 | xfered_len,'X', 0); | |
a76d924d DJ |
8912 | } |
8913 | ||
f6ac5f3d PA |
8914 | void |
8915 | remote_target::flash_done () | |
a76d924d | 8916 | { |
a76d924d | 8917 | int ret; |
a76d924d | 8918 | |
2ec845e7 TT |
8919 | scoped_restore restore_timeout |
8920 | = make_scoped_restore (&remote_timeout, remote_flash_timeout); | |
8921 | ||
a76d924d | 8922 | ret = remote_send_printf ("vFlashDone"); |
a76d924d DJ |
8923 | |
8924 | switch (ret) | |
8925 | { | |
8926 | case PACKET_UNKNOWN: | |
8927 | error (_("Remote target does not support vFlashDone")); | |
8928 | case PACKET_ERROR: | |
8929 | error (_("Error finishing flash operation")); | |
8930 | default: | |
8931 | break; | |
8932 | } | |
8933 | } | |
8934 | ||
f6ac5f3d PA |
8935 | void |
8936 | remote_target::files_info () | |
c906108c SS |
8937 | { |
8938 | puts_filtered ("Debugging a target over a serial line.\n"); | |
8939 | } | |
8940 | \f | |
8941 | /* Stuff for dealing with the packets which are part of this protocol. | |
8942 | See comment at top of file for details. */ | |
8943 | ||
1927e618 PA |
8944 | /* Close/unpush the remote target, and throw a TARGET_CLOSE_ERROR |
8945 | error to higher layers. Called when a serial error is detected. | |
8946 | The exception message is STRING, followed by a colon and a blank, | |
d6cb50a2 JK |
8947 | the system error message for errno at function entry and final dot |
8948 | for output compatibility with throw_perror_with_name. */ | |
1927e618 PA |
8949 | |
8950 | static void | |
8951 | unpush_and_perror (const char *string) | |
8952 | { | |
d6cb50a2 | 8953 | int saved_errno = errno; |
1927e618 PA |
8954 | |
8955 | remote_unpush_target (); | |
d6cb50a2 JK |
8956 | throw_error (TARGET_CLOSE_ERROR, "%s: %s.", string, |
8957 | safe_strerror (saved_errno)); | |
1927e618 PA |
8958 | } |
8959 | ||
048094ac PA |
8960 | /* Read a single character from the remote end. The current quit |
8961 | handler is overridden to avoid quitting in the middle of packet | |
8962 | sequence, as that would break communication with the remote server. | |
8963 | See remote_serial_quit_handler for more detail. */ | |
c906108c | 8964 | |
6b8edb51 PA |
8965 | int |
8966 | remote_target::readchar (int timeout) | |
c906108c SS |
8967 | { |
8968 | int ch; | |
5d93a237 | 8969 | struct remote_state *rs = get_remote_state (); |
048094ac | 8970 | |
2ec845e7 | 8971 | { |
6b8edb51 PA |
8972 | scoped_restore restore_quit_target |
8973 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 8974 | scoped_restore restore_quit |
6b8edb51 | 8975 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
c906108c | 8976 | |
2ec845e7 | 8977 | rs->got_ctrlc_during_io = 0; |
c906108c | 8978 | |
2ec845e7 | 8979 | ch = serial_readchar (rs->remote_desc, timeout); |
048094ac | 8980 | |
2ec845e7 TT |
8981 | if (rs->got_ctrlc_during_io) |
8982 | set_quit_flag (); | |
8983 | } | |
048094ac | 8984 | |
2acceee2 | 8985 | if (ch >= 0) |
0876f84a | 8986 | return ch; |
2acceee2 JM |
8987 | |
8988 | switch ((enum serial_rc) ch) | |
c906108c SS |
8989 | { |
8990 | case SERIAL_EOF: | |
78a095c3 | 8991 | remote_unpush_target (); |
598d3636 | 8992 | throw_error (TARGET_CLOSE_ERROR, _("Remote connection closed")); |
2acceee2 | 8993 | /* no return */ |
c906108c | 8994 | case SERIAL_ERROR: |
1927e618 PA |
8995 | unpush_and_perror (_("Remote communication error. " |
8996 | "Target disconnected.")); | |
2acceee2 | 8997 | /* no return */ |
c906108c | 8998 | case SERIAL_TIMEOUT: |
2acceee2 | 8999 | break; |
c906108c | 9000 | } |
2acceee2 | 9001 | return ch; |
c906108c SS |
9002 | } |
9003 | ||
c33e31fd | 9004 | /* Wrapper for serial_write that closes the target and throws if |
048094ac PA |
9005 | writing fails. The current quit handler is overridden to avoid |
9006 | quitting in the middle of packet sequence, as that would break | |
9007 | communication with the remote server. See | |
9008 | remote_serial_quit_handler for more detail. */ | |
c33e31fd | 9009 | |
6b8edb51 PA |
9010 | void |
9011 | remote_target::remote_serial_write (const char *str, int len) | |
c33e31fd | 9012 | { |
5d93a237 | 9013 | struct remote_state *rs = get_remote_state (); |
048094ac | 9014 | |
6b8edb51 PA |
9015 | scoped_restore restore_quit_target |
9016 | = make_scoped_restore (&curr_quit_handler_target, this); | |
2ec845e7 | 9017 | scoped_restore restore_quit |
6b8edb51 | 9018 | = make_scoped_restore (&quit_handler, ::remote_serial_quit_handler); |
048094ac PA |
9019 | |
9020 | rs->got_ctrlc_during_io = 0; | |
5d93a237 TT |
9021 | |
9022 | if (serial_write (rs->remote_desc, str, len)) | |
c33e31fd | 9023 | { |
1927e618 PA |
9024 | unpush_and_perror (_("Remote communication error. " |
9025 | "Target disconnected.")); | |
c33e31fd | 9026 | } |
048094ac PA |
9027 | |
9028 | if (rs->got_ctrlc_during_io) | |
9029 | set_quit_flag (); | |
c33e31fd PA |
9030 | } |
9031 | ||
b3ced9ba PA |
9032 | /* Return a string representing an escaped version of BUF, of len N. |
9033 | E.g. \n is converted to \\n, \t to \\t, etc. */ | |
6e5abd65 | 9034 | |
b3ced9ba | 9035 | static std::string |
6e5abd65 PA |
9036 | escape_buffer (const char *buf, int n) |
9037 | { | |
d7e74731 | 9038 | string_file stb; |
6e5abd65 | 9039 | |
d7e74731 PA |
9040 | stb.putstrn (buf, n, '\\'); |
9041 | return std::move (stb.string ()); | |
6e5abd65 PA |
9042 | } |
9043 | ||
c906108c SS |
9044 | /* Display a null-terminated packet on stdout, for debugging, using C |
9045 | string notation. */ | |
9046 | ||
9047 | static void | |
baa336ce | 9048 | print_packet (const char *buf) |
c906108c SS |
9049 | { |
9050 | puts_filtered ("\""); | |
43e526b9 | 9051 | fputstr_filtered (buf, '"', gdb_stdout); |
c906108c SS |
9052 | puts_filtered ("\""); |
9053 | } | |
9054 | ||
9055 | int | |
6b8edb51 | 9056 | remote_target::putpkt (const char *buf) |
c906108c SS |
9057 | { |
9058 | return putpkt_binary (buf, strlen (buf)); | |
9059 | } | |
9060 | ||
6b8edb51 PA |
9061 | /* Wrapper around remote_target::putpkt to avoid exporting |
9062 | remote_target. */ | |
9063 | ||
9064 | int | |
9065 | putpkt (remote_target *remote, const char *buf) | |
9066 | { | |
9067 | return remote->putpkt (buf); | |
9068 | } | |
9069 | ||
c906108c | 9070 | /* Send a packet to the remote machine, with error checking. The data |
23860348 | 9071 | of the packet is in BUF. The string in BUF can be at most |
ea9c271d | 9072 | get_remote_packet_size () - 5 to account for the $, # and checksum, |
23860348 MS |
9073 | and for a possible /0 if we are debugging (remote_debug) and want |
9074 | to print the sent packet as a string. */ | |
c906108c | 9075 | |
6b8edb51 PA |
9076 | int |
9077 | remote_target::putpkt_binary (const char *buf, int cnt) | |
c906108c | 9078 | { |
2d717e4f | 9079 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9080 | int i; |
9081 | unsigned char csum = 0; | |
b80406ac TT |
9082 | gdb::def_vector<char> data (cnt + 6); |
9083 | char *buf2 = data.data (); | |
085dd6e6 | 9084 | |
c906108c SS |
9085 | int ch; |
9086 | int tcount = 0; | |
9087 | char *p; | |
9088 | ||
e24a49d8 PA |
9089 | /* Catch cases like trying to read memory or listing threads while |
9090 | we're waiting for a stop reply. The remote server wouldn't be | |
9091 | ready to handle this request, so we'd hang and timeout. We don't | |
9092 | have to worry about this in synchronous mode, because in that | |
9093 | case it's not possible to issue a command while the target is | |
74531fed PA |
9094 | running. This is not a problem in non-stop mode, because in that |
9095 | case, the stub is always ready to process serial input. */ | |
6efcd9a8 PA |
9096 | if (!target_is_non_stop_p () |
9097 | && target_is_async_p () | |
9098 | && rs->waiting_for_stop_reply) | |
9597b22a DE |
9099 | { |
9100 | error (_("Cannot execute this command while the target is running.\n" | |
9101 | "Use the \"interrupt\" command to stop the target\n" | |
9102 | "and then try again.")); | |
9103 | } | |
e24a49d8 | 9104 | |
2d717e4f DJ |
9105 | /* We're sending out a new packet. Make sure we don't look at a |
9106 | stale cached response. */ | |
9107 | rs->cached_wait_status = 0; | |
9108 | ||
c906108c SS |
9109 | /* Copy the packet into buffer BUF2, encapsulating it |
9110 | and giving it a checksum. */ | |
9111 | ||
c906108c SS |
9112 | p = buf2; |
9113 | *p++ = '$'; | |
9114 | ||
9115 | for (i = 0; i < cnt; i++) | |
9116 | { | |
9117 | csum += buf[i]; | |
9118 | *p++ = buf[i]; | |
9119 | } | |
9120 | *p++ = '#'; | |
9121 | *p++ = tohex ((csum >> 4) & 0xf); | |
9122 | *p++ = tohex (csum & 0xf); | |
9123 | ||
9124 | /* Send it over and over until we get a positive ack. */ | |
9125 | ||
9126 | while (1) | |
9127 | { | |
9128 | int started_error_output = 0; | |
9129 | ||
9130 | if (remote_debug) | |
9131 | { | |
9132 | *p = '\0'; | |
b3ced9ba | 9133 | |
6f8976bf YQ |
9134 | int len = (int) (p - buf2); |
9135 | ||
9136 | std::string str | |
9137 | = escape_buffer (buf2, std::min (len, REMOTE_DEBUG_MAX_CHAR)); | |
9138 | ||
9139 | fprintf_unfiltered (gdb_stdlog, "Sending packet: %s", str.c_str ()); | |
9140 | ||
567a3e54 SM |
9141 | if (len > REMOTE_DEBUG_MAX_CHAR) |
9142 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
9143 | len - REMOTE_DEBUG_MAX_CHAR); | |
6f8976bf YQ |
9144 | |
9145 | fprintf_unfiltered (gdb_stdlog, "..."); | |
b3ced9ba | 9146 | |
0f71a2f6 | 9147 | gdb_flush (gdb_stdlog); |
c906108c | 9148 | } |
c33e31fd | 9149 | remote_serial_write (buf2, p - buf2); |
c906108c | 9150 | |
a6f3e723 SL |
9151 | /* If this is a no acks version of the remote protocol, send the |
9152 | packet and move on. */ | |
9153 | if (rs->noack_mode) | |
9154 | break; | |
9155 | ||
74531fed PA |
9156 | /* Read until either a timeout occurs (-2) or '+' is read. |
9157 | Handle any notification that arrives in the mean time. */ | |
c906108c SS |
9158 | while (1) |
9159 | { | |
9160 | ch = readchar (remote_timeout); | |
9161 | ||
c5aa993b | 9162 | if (remote_debug) |
c906108c SS |
9163 | { |
9164 | switch (ch) | |
9165 | { | |
9166 | case '+': | |
1216fa2c | 9167 | case '-': |
c906108c SS |
9168 | case SERIAL_TIMEOUT: |
9169 | case '$': | |
74531fed | 9170 | case '%': |
c906108c SS |
9171 | if (started_error_output) |
9172 | { | |
9173 | putchar_unfiltered ('\n'); | |
9174 | started_error_output = 0; | |
9175 | } | |
9176 | } | |
9177 | } | |
9178 | ||
9179 | switch (ch) | |
9180 | { | |
9181 | case '+': | |
9182 | if (remote_debug) | |
0f71a2f6 | 9183 | fprintf_unfiltered (gdb_stdlog, "Ack\n"); |
c906108c | 9184 | return 1; |
1216fa2c AC |
9185 | case '-': |
9186 | if (remote_debug) | |
9187 | fprintf_unfiltered (gdb_stdlog, "Nak\n"); | |
a17d146e | 9188 | /* FALLTHROUGH */ |
c906108c | 9189 | case SERIAL_TIMEOUT: |
c5aa993b | 9190 | tcount++; |
c906108c | 9191 | if (tcount > 3) |
b80406ac | 9192 | return 0; |
23860348 | 9193 | break; /* Retransmit buffer. */ |
c906108c SS |
9194 | case '$': |
9195 | { | |
40e3f985 | 9196 | if (remote_debug) |
2bc416ba | 9197 | fprintf_unfiltered (gdb_stdlog, |
23860348 | 9198 | "Packet instead of Ack, ignoring it\n"); |
d6f7abdf AC |
9199 | /* It's probably an old response sent because an ACK |
9200 | was lost. Gobble up the packet and ack it so it | |
9201 | doesn't get retransmitted when we resend this | |
9202 | packet. */ | |
6d820c5c | 9203 | skip_frame (); |
c33e31fd | 9204 | remote_serial_write ("+", 1); |
23860348 | 9205 | continue; /* Now, go look for +. */ |
c906108c | 9206 | } |
74531fed PA |
9207 | |
9208 | case '%': | |
9209 | { | |
9210 | int val; | |
9211 | ||
9212 | /* If we got a notification, handle it, and go back to looking | |
9213 | for an ack. */ | |
9214 | /* We've found the start of a notification. Now | |
9215 | collect the data. */ | |
8d64371b | 9216 | val = read_frame (&rs->buf); |
74531fed PA |
9217 | if (val >= 0) |
9218 | { | |
9219 | if (remote_debug) | |
9220 | { | |
8d64371b | 9221 | std::string str = escape_buffer (rs->buf.data (), val); |
6e5abd65 | 9222 | |
6e5abd65 PA |
9223 | fprintf_unfiltered (gdb_stdlog, |
9224 | " Notification received: %s\n", | |
b3ced9ba | 9225 | str.c_str ()); |
74531fed | 9226 | } |
8d64371b | 9227 | handle_notification (rs->notif_state, rs->buf.data ()); |
74531fed PA |
9228 | /* We're in sync now, rewait for the ack. */ |
9229 | tcount = 0; | |
9230 | } | |
9231 | else | |
9232 | { | |
9233 | if (remote_debug) | |
9234 | { | |
9235 | if (!started_error_output) | |
9236 | { | |
9237 | started_error_output = 1; | |
9238 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); | |
9239 | } | |
9240 | fputc_unfiltered (ch & 0177, gdb_stdlog); | |
8d64371b | 9241 | fprintf_unfiltered (gdb_stdlog, "%s", rs->buf.data ()); |
74531fed PA |
9242 | } |
9243 | } | |
9244 | continue; | |
9245 | } | |
9246 | /* fall-through */ | |
c906108c SS |
9247 | default: |
9248 | if (remote_debug) | |
9249 | { | |
9250 | if (!started_error_output) | |
9251 | { | |
9252 | started_error_output = 1; | |
0f71a2f6 | 9253 | fprintf_unfiltered (gdb_stdlog, "putpkt: Junk: "); |
c906108c | 9254 | } |
0f71a2f6 | 9255 | fputc_unfiltered (ch & 0177, gdb_stdlog); |
c906108c SS |
9256 | } |
9257 | continue; | |
9258 | } | |
23860348 | 9259 | break; /* Here to retransmit. */ |
c906108c SS |
9260 | } |
9261 | ||
9262 | #if 0 | |
9263 | /* This is wrong. If doing a long backtrace, the user should be | |
c5aa993b JM |
9264 | able to get out next time we call QUIT, without anything as |
9265 | violent as interrupt_query. If we want to provide a way out of | |
9266 | here without getting to the next QUIT, it should be based on | |
9267 | hitting ^C twice as in remote_wait. */ | |
c906108c SS |
9268 | if (quit_flag) |
9269 | { | |
9270 | quit_flag = 0; | |
9271 | interrupt_query (); | |
9272 | } | |
9273 | #endif | |
9274 | } | |
a5c0808e | 9275 | |
a6f3e723 | 9276 | return 0; |
c906108c SS |
9277 | } |
9278 | ||
6d820c5c DJ |
9279 | /* Come here after finding the start of a frame when we expected an |
9280 | ack. Do our best to discard the rest of this packet. */ | |
9281 | ||
6b8edb51 PA |
9282 | void |
9283 | remote_target::skip_frame () | |
6d820c5c DJ |
9284 | { |
9285 | int c; | |
9286 | ||
9287 | while (1) | |
9288 | { | |
9289 | c = readchar (remote_timeout); | |
9290 | switch (c) | |
9291 | { | |
9292 | case SERIAL_TIMEOUT: | |
9293 | /* Nothing we can do. */ | |
9294 | return; | |
9295 | case '#': | |
9296 | /* Discard the two bytes of checksum and stop. */ | |
9297 | c = readchar (remote_timeout); | |
9298 | if (c >= 0) | |
9299 | c = readchar (remote_timeout); | |
9300 | ||
9301 | return; | |
9302 | case '*': /* Run length encoding. */ | |
9303 | /* Discard the repeat count. */ | |
9304 | c = readchar (remote_timeout); | |
9305 | if (c < 0) | |
9306 | return; | |
9307 | break; | |
9308 | default: | |
9309 | /* A regular character. */ | |
9310 | break; | |
9311 | } | |
9312 | } | |
9313 | } | |
9314 | ||
c906108c | 9315 | /* Come here after finding the start of the frame. Collect the rest |
6d820c5c DJ |
9316 | into *BUF, verifying the checksum, length, and handling run-length |
9317 | compression. NUL terminate the buffer. If there is not enough room, | |
8d64371b | 9318 | expand *BUF. |
c906108c | 9319 | |
c2d11a7d JM |
9320 | Returns -1 on error, number of characters in buffer (ignoring the |
9321 | trailing NULL) on success. (could be extended to return one of the | |
23860348 | 9322 | SERIAL status indications). */ |
c2d11a7d | 9323 | |
6b8edb51 | 9324 | long |
8d64371b | 9325 | remote_target::read_frame (gdb::char_vector *buf_p) |
c906108c SS |
9326 | { |
9327 | unsigned char csum; | |
c2d11a7d | 9328 | long bc; |
c906108c | 9329 | int c; |
8d64371b | 9330 | char *buf = buf_p->data (); |
a6f3e723 | 9331 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9332 | |
9333 | csum = 0; | |
c2d11a7d | 9334 | bc = 0; |
c906108c SS |
9335 | |
9336 | while (1) | |
9337 | { | |
9338 | c = readchar (remote_timeout); | |
c906108c SS |
9339 | switch (c) |
9340 | { | |
9341 | case SERIAL_TIMEOUT: | |
9342 | if (remote_debug) | |
0f71a2f6 | 9343 | fputs_filtered ("Timeout in mid-packet, retrying\n", gdb_stdlog); |
c2d11a7d | 9344 | return -1; |
c906108c SS |
9345 | case '$': |
9346 | if (remote_debug) | |
0f71a2f6 JM |
9347 | fputs_filtered ("Saw new packet start in middle of old one\n", |
9348 | gdb_stdlog); | |
23860348 | 9349 | return -1; /* Start a new packet, count retries. */ |
c906108c SS |
9350 | case '#': |
9351 | { | |
9352 | unsigned char pktcsum; | |
e1b09194 AC |
9353 | int check_0 = 0; |
9354 | int check_1 = 0; | |
c906108c | 9355 | |
c2d11a7d | 9356 | buf[bc] = '\0'; |
c906108c | 9357 | |
e1b09194 AC |
9358 | check_0 = readchar (remote_timeout); |
9359 | if (check_0 >= 0) | |
9360 | check_1 = readchar (remote_timeout); | |
802188a7 | 9361 | |
e1b09194 AC |
9362 | if (check_0 == SERIAL_TIMEOUT || check_1 == SERIAL_TIMEOUT) |
9363 | { | |
9364 | if (remote_debug) | |
2bc416ba | 9365 | fputs_filtered ("Timeout in checksum, retrying\n", |
23860348 | 9366 | gdb_stdlog); |
e1b09194 AC |
9367 | return -1; |
9368 | } | |
9369 | else if (check_0 < 0 || check_1 < 0) | |
40e3f985 FN |
9370 | { |
9371 | if (remote_debug) | |
2bc416ba | 9372 | fputs_filtered ("Communication error in checksum\n", |
23860348 | 9373 | gdb_stdlog); |
40e3f985 FN |
9374 | return -1; |
9375 | } | |
c906108c | 9376 | |
a6f3e723 SL |
9377 | /* Don't recompute the checksum; with no ack packets we |
9378 | don't have any way to indicate a packet retransmission | |
9379 | is necessary. */ | |
9380 | if (rs->noack_mode) | |
9381 | return bc; | |
9382 | ||
e1b09194 | 9383 | pktcsum = (fromhex (check_0) << 4) | fromhex (check_1); |
c906108c | 9384 | if (csum == pktcsum) |
c2d11a7d | 9385 | return bc; |
c906108c | 9386 | |
c5aa993b | 9387 | if (remote_debug) |
c906108c | 9388 | { |
b3ced9ba | 9389 | std::string str = escape_buffer (buf, bc); |
6e5abd65 | 9390 | |
6e5abd65 | 9391 | fprintf_unfiltered (gdb_stdlog, |
3e43a32a MS |
9392 | "Bad checksum, sentsum=0x%x, " |
9393 | "csum=0x%x, buf=%s\n", | |
b3ced9ba | 9394 | pktcsum, csum, str.c_str ()); |
c906108c | 9395 | } |
c2d11a7d | 9396 | /* Number of characters in buffer ignoring trailing |
23860348 | 9397 | NULL. */ |
c2d11a7d | 9398 | return -1; |
c906108c | 9399 | } |
23860348 | 9400 | case '*': /* Run length encoding. */ |
c2c6d25f JM |
9401 | { |
9402 | int repeat; | |
c906108c | 9403 | |
a744cf53 | 9404 | csum += c; |
b4501125 AC |
9405 | c = readchar (remote_timeout); |
9406 | csum += c; | |
23860348 | 9407 | repeat = c - ' ' + 3; /* Compute repeat count. */ |
c906108c | 9408 | |
23860348 | 9409 | /* The character before ``*'' is repeated. */ |
c2d11a7d | 9410 | |
6d820c5c | 9411 | if (repeat > 0 && repeat <= 255 && bc > 0) |
c2c6d25f | 9412 | { |
8d64371b | 9413 | if (bc + repeat - 1 >= buf_p->size () - 1) |
6d820c5c DJ |
9414 | { |
9415 | /* Make some more room in the buffer. */ | |
8d64371b TT |
9416 | buf_p->resize (buf_p->size () + repeat); |
9417 | buf = buf_p->data (); | |
6d820c5c DJ |
9418 | } |
9419 | ||
c2d11a7d JM |
9420 | memset (&buf[bc], buf[bc - 1], repeat); |
9421 | bc += repeat; | |
c2c6d25f JM |
9422 | continue; |
9423 | } | |
9424 | ||
c2d11a7d | 9425 | buf[bc] = '\0'; |
6d820c5c | 9426 | printf_filtered (_("Invalid run length encoding: %s\n"), buf); |
c2d11a7d | 9427 | return -1; |
c2c6d25f | 9428 | } |
c906108c | 9429 | default: |
8d64371b | 9430 | if (bc >= buf_p->size () - 1) |
c906108c | 9431 | { |
6d820c5c | 9432 | /* Make some more room in the buffer. */ |
8d64371b TT |
9433 | buf_p->resize (buf_p->size () * 2); |
9434 | buf = buf_p->data (); | |
c906108c SS |
9435 | } |
9436 | ||
6d820c5c DJ |
9437 | buf[bc++] = c; |
9438 | csum += c; | |
9439 | continue; | |
c906108c SS |
9440 | } |
9441 | } | |
9442 | } | |
9443 | ||
ed2b7c17 TT |
9444 | /* Set this to the maximum number of seconds to wait instead of waiting forever |
9445 | in target_wait(). If this timer times out, then it generates an error and | |
9446 | the command is aborted. This replaces most of the need for timeouts in the | |
9447 | GDB test suite, and makes it possible to distinguish between a hung target | |
9448 | and one with slow communications. */ | |
9449 | ||
9450 | static int watchdog = 0; | |
9451 | static void | |
9452 | show_watchdog (struct ui_file *file, int from_tty, | |
9453 | struct cmd_list_element *c, const char *value) | |
9454 | { | |
9455 | fprintf_filtered (file, _("Watchdog timer is %s.\n"), value); | |
9456 | } | |
9457 | ||
c906108c | 9458 | /* Read a packet from the remote machine, with error checking, and |
8d64371b TT |
9459 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9460 | FOREVER, wait forever rather than timing out; this is used (in | |
9461 | synchronous mode) to wait for a target that is is executing user | |
9462 | code to stop. */ | |
d9fcf2fb JM |
9463 | /* FIXME: ezannoni 2000-02-01 this wrapper is necessary so that we |
9464 | don't have to change all the calls to getpkt to deal with the | |
9465 | return value, because at the moment I don't know what the right | |
23860348 | 9466 | thing to do it for those. */ |
6b8edb51 | 9467 | |
c906108c | 9468 | void |
8d64371b | 9469 | remote_target::getpkt (gdb::char_vector *buf, int forever) |
d9fcf2fb | 9470 | { |
8d64371b | 9471 | getpkt_sane (buf, forever); |
d9fcf2fb JM |
9472 | } |
9473 | ||
9474 | ||
9475 | /* Read a packet from the remote machine, with error checking, and | |
8d64371b TT |
9476 | store it in *BUF. Resize *BUF if necessary to hold the result. If |
9477 | FOREVER, wait forever rather than timing out; this is used (in | |
9478 | synchronous mode) to wait for a target that is is executing user | |
9479 | code to stop. If FOREVER == 0, this function is allowed to time | |
9480 | out gracefully and return an indication of this to the caller. | |
9481 | Otherwise return the number of bytes read. If EXPECTING_NOTIF, | |
9482 | consider receiving a notification enough reason to return to the | |
9483 | caller. *IS_NOTIF is an output boolean that indicates whether *BUF | |
9484 | holds a notification or not (a regular packet). */ | |
74531fed | 9485 | |
6b8edb51 | 9486 | int |
8d64371b | 9487 | remote_target::getpkt_or_notif_sane_1 (gdb::char_vector *buf, |
6b8edb51 PA |
9488 | int forever, int expecting_notif, |
9489 | int *is_notif) | |
c906108c | 9490 | { |
2d717e4f | 9491 | struct remote_state *rs = get_remote_state (); |
c906108c SS |
9492 | int c; |
9493 | int tries; | |
9494 | int timeout; | |
df4b58fe | 9495 | int val = -1; |
c906108c | 9496 | |
2d717e4f DJ |
9497 | /* We're reading a new response. Make sure we don't look at a |
9498 | previously cached response. */ | |
9499 | rs->cached_wait_status = 0; | |
9500 | ||
8d64371b | 9501 | strcpy (buf->data (), "timeout"); |
c906108c SS |
9502 | |
9503 | if (forever) | |
74531fed PA |
9504 | timeout = watchdog > 0 ? watchdog : -1; |
9505 | else if (expecting_notif) | |
9506 | timeout = 0; /* There should already be a char in the buffer. If | |
9507 | not, bail out. */ | |
c906108c SS |
9508 | else |
9509 | timeout = remote_timeout; | |
9510 | ||
9511 | #define MAX_TRIES 3 | |
9512 | ||
74531fed PA |
9513 | /* Process any number of notifications, and then return when |
9514 | we get a packet. */ | |
9515 | for (;;) | |
c906108c | 9516 | { |
d9c43928 | 9517 | /* If we get a timeout or bad checksum, retry up to MAX_TRIES |
74531fed PA |
9518 | times. */ |
9519 | for (tries = 1; tries <= MAX_TRIES; tries++) | |
c906108c | 9520 | { |
74531fed PA |
9521 | /* This can loop forever if the remote side sends us |
9522 | characters continuously, but if it pauses, we'll get | |
9523 | SERIAL_TIMEOUT from readchar because of timeout. Then | |
9524 | we'll count that as a retry. | |
9525 | ||
9526 | Note that even when forever is set, we will only wait | |
9527 | forever prior to the start of a packet. After that, we | |
9528 | expect characters to arrive at a brisk pace. They should | |
9529 | show up within remote_timeout intervals. */ | |
9530 | do | |
9531 | c = readchar (timeout); | |
9532 | while (c != SERIAL_TIMEOUT && c != '$' && c != '%'); | |
c906108c SS |
9533 | |
9534 | if (c == SERIAL_TIMEOUT) | |
9535 | { | |
74531fed PA |
9536 | if (expecting_notif) |
9537 | return -1; /* Don't complain, it's normal to not get | |
9538 | anything in this case. */ | |
9539 | ||
23860348 | 9540 | if (forever) /* Watchdog went off? Kill the target. */ |
c906108c | 9541 | { |
78a095c3 | 9542 | remote_unpush_target (); |
598d3636 JK |
9543 | throw_error (TARGET_CLOSE_ERROR, |
9544 | _("Watchdog timeout has expired. " | |
9545 | "Target detached.")); | |
c906108c | 9546 | } |
c906108c | 9547 | if (remote_debug) |
0f71a2f6 | 9548 | fputs_filtered ("Timed out.\n", gdb_stdlog); |
c906108c | 9549 | } |
74531fed PA |
9550 | else |
9551 | { | |
9552 | /* We've found the start of a packet or notification. | |
9553 | Now collect the data. */ | |
8d64371b | 9554 | val = read_frame (buf); |
74531fed PA |
9555 | if (val >= 0) |
9556 | break; | |
9557 | } | |
9558 | ||
c33e31fd | 9559 | remote_serial_write ("-", 1); |
c906108c | 9560 | } |
c906108c | 9561 | |
74531fed PA |
9562 | if (tries > MAX_TRIES) |
9563 | { | |
9564 | /* We have tried hard enough, and just can't receive the | |
9565 | packet/notification. Give up. */ | |
9566 | printf_unfiltered (_("Ignoring packet error, continuing...\n")); | |
c906108c | 9567 | |
74531fed PA |
9568 | /* Skip the ack char if we're in no-ack mode. */ |
9569 | if (!rs->noack_mode) | |
c33e31fd | 9570 | remote_serial_write ("+", 1); |
74531fed PA |
9571 | return -1; |
9572 | } | |
c906108c | 9573 | |
74531fed PA |
9574 | /* If we got an ordinary packet, return that to our caller. */ |
9575 | if (c == '$') | |
c906108c SS |
9576 | { |
9577 | if (remote_debug) | |
43e526b9 | 9578 | { |
6f8976bf | 9579 | std::string str |
8d64371b | 9580 | = escape_buffer (buf->data (), |
6f8976bf YQ |
9581 | std::min (val, REMOTE_DEBUG_MAX_CHAR)); |
9582 | ||
9583 | fprintf_unfiltered (gdb_stdlog, "Packet received: %s", | |
9584 | str.c_str ()); | |
9585 | ||
567a3e54 SM |
9586 | if (val > REMOTE_DEBUG_MAX_CHAR) |
9587 | fprintf_unfiltered (gdb_stdlog, "[%d bytes omitted]", | |
9588 | val - REMOTE_DEBUG_MAX_CHAR); | |
6e5abd65 | 9589 | |
6f8976bf | 9590 | fprintf_unfiltered (gdb_stdlog, "\n"); |
43e526b9 | 9591 | } |
a6f3e723 SL |
9592 | |
9593 | /* Skip the ack char if we're in no-ack mode. */ | |
9594 | if (!rs->noack_mode) | |
c33e31fd | 9595 | remote_serial_write ("+", 1); |
fee9eda9 YQ |
9596 | if (is_notif != NULL) |
9597 | *is_notif = 0; | |
0876f84a | 9598 | return val; |
c906108c SS |
9599 | } |
9600 | ||
74531fed PA |
9601 | /* If we got a notification, handle it, and go back to looking |
9602 | for a packet. */ | |
9603 | else | |
9604 | { | |
9605 | gdb_assert (c == '%'); | |
9606 | ||
9607 | if (remote_debug) | |
9608 | { | |
8d64371b | 9609 | std::string str = escape_buffer (buf->data (), val); |
6e5abd65 | 9610 | |
6e5abd65 PA |
9611 | fprintf_unfiltered (gdb_stdlog, |
9612 | " Notification received: %s\n", | |
b3ced9ba | 9613 | str.c_str ()); |
74531fed | 9614 | } |
fee9eda9 YQ |
9615 | if (is_notif != NULL) |
9616 | *is_notif = 1; | |
c906108c | 9617 | |
8d64371b | 9618 | handle_notification (rs->notif_state, buf->data ()); |
c906108c | 9619 | |
74531fed | 9620 | /* Notifications require no acknowledgement. */ |
a6f3e723 | 9621 | |
74531fed | 9622 | if (expecting_notif) |
fee9eda9 | 9623 | return val; |
74531fed PA |
9624 | } |
9625 | } | |
9626 | } | |
9627 | ||
6b8edb51 | 9628 | int |
8d64371b | 9629 | remote_target::getpkt_sane (gdb::char_vector *buf, int forever) |
74531fed | 9630 | { |
8d64371b | 9631 | return getpkt_or_notif_sane_1 (buf, forever, 0, NULL); |
74531fed PA |
9632 | } |
9633 | ||
6b8edb51 | 9634 | int |
8d64371b | 9635 | remote_target::getpkt_or_notif_sane (gdb::char_vector *buf, int forever, |
6b8edb51 | 9636 | int *is_notif) |
74531fed | 9637 | { |
8d64371b | 9638 | return getpkt_or_notif_sane_1 (buf, forever, 1, is_notif); |
c906108c | 9639 | } |
74531fed | 9640 | |
cbb8991c DB |
9641 | /* Kill any new fork children of process PID that haven't been |
9642 | processed by follow_fork. */ | |
9643 | ||
6b8edb51 PA |
9644 | void |
9645 | remote_target::kill_new_fork_children (int pid) | |
cbb8991c | 9646 | { |
6b8edb51 | 9647 | remote_state *rs = get_remote_state (); |
cbb8991c | 9648 | struct notif_client *notif = ¬if_client_stop; |
cbb8991c DB |
9649 | |
9650 | /* Kill the fork child threads of any threads in process PID | |
9651 | that are stopped at a fork event. */ | |
08036331 | 9652 | for (thread_info *thread : all_non_exited_threads ()) |
cbb8991c DB |
9653 | { |
9654 | struct target_waitstatus *ws = &thread->pending_follow; | |
9655 | ||
9656 | if (is_pending_fork_parent (ws, pid, thread->ptid)) | |
9657 | { | |
953edf2b | 9658 | int child_pid = ws->value.related_pid.pid (); |
cbb8991c DB |
9659 | int res; |
9660 | ||
6b8edb51 | 9661 | res = remote_vkill (child_pid); |
cbb8991c DB |
9662 | if (res != 0) |
9663 | error (_("Can't kill fork child process %d"), child_pid); | |
9664 | } | |
9665 | } | |
9666 | ||
9667 | /* Check for any pending fork events (not reported or processed yet) | |
9668 | in process PID and kill those fork child threads as well. */ | |
9669 | remote_notif_get_pending_events (notif); | |
953edf2b TT |
9670 | for (auto &event : rs->stop_reply_queue) |
9671 | if (is_pending_fork_parent (&event->ws, pid, event->ptid)) | |
9672 | { | |
9673 | int child_pid = event->ws.value.related_pid.pid (); | |
9674 | int res; | |
9675 | ||
9676 | res = remote_vkill (child_pid); | |
9677 | if (res != 0) | |
9678 | error (_("Can't kill fork child process %d"), child_pid); | |
9679 | } | |
cbb8991c DB |
9680 | } |
9681 | ||
c906108c | 9682 | \f |
8020350c DB |
9683 | /* Target hook to kill the current inferior. */ |
9684 | ||
f6ac5f3d PA |
9685 | void |
9686 | remote_target::kill () | |
43ff13b4 | 9687 | { |
8020350c | 9688 | int res = -1; |
e99b03dc | 9689 | int pid = inferior_ptid.pid (); |
8020350c | 9690 | struct remote_state *rs = get_remote_state (); |
0fdf84ca | 9691 | |
8020350c | 9692 | if (packet_support (PACKET_vKill) != PACKET_DISABLE) |
0fdf84ca | 9693 | { |
8020350c DB |
9694 | /* If we're stopped while forking and we haven't followed yet, |
9695 | kill the child task. We need to do this before killing the | |
9696 | parent task because if this is a vfork then the parent will | |
9697 | be sleeping. */ | |
6b8edb51 | 9698 | kill_new_fork_children (pid); |
8020350c | 9699 | |
6b8edb51 | 9700 | res = remote_vkill (pid); |
8020350c | 9701 | if (res == 0) |
0fdf84ca | 9702 | { |
bc1e6c81 | 9703 | target_mourn_inferior (inferior_ptid); |
0fdf84ca PA |
9704 | return; |
9705 | } | |
8020350c | 9706 | } |
0fdf84ca | 9707 | |
8020350c DB |
9708 | /* If we are in 'target remote' mode and we are killing the only |
9709 | inferior, then we will tell gdbserver to exit and unpush the | |
9710 | target. */ | |
9711 | if (res == -1 && !remote_multi_process_p (rs) | |
9712 | && number_of_live_inferiors () == 1) | |
9713 | { | |
9714 | remote_kill_k (); | |
9715 | ||
9716 | /* We've killed the remote end, we get to mourn it. If we are | |
9717 | not in extended mode, mourning the inferior also unpushes | |
9718 | remote_ops from the target stack, which closes the remote | |
9719 | connection. */ | |
bc1e6c81 | 9720 | target_mourn_inferior (inferior_ptid); |
8020350c DB |
9721 | |
9722 | return; | |
0fdf84ca | 9723 | } |
43ff13b4 | 9724 | |
8020350c | 9725 | error (_("Can't kill process")); |
43ff13b4 JM |
9726 | } |
9727 | ||
8020350c DB |
9728 | /* Send a kill request to the target using the 'vKill' packet. */ |
9729 | ||
6b8edb51 PA |
9730 | int |
9731 | remote_target::remote_vkill (int pid) | |
82f73884 | 9732 | { |
4082afcc | 9733 | if (packet_support (PACKET_vKill) == PACKET_DISABLE) |
82f73884 PA |
9734 | return -1; |
9735 | ||
6b8edb51 PA |
9736 | remote_state *rs = get_remote_state (); |
9737 | ||
82f73884 | 9738 | /* Tell the remote target to detach. */ |
8d64371b | 9739 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "vKill;%x", pid); |
82f73884 | 9740 | putpkt (rs->buf); |
8d64371b | 9741 | getpkt (&rs->buf, 0); |
82f73884 | 9742 | |
4082afcc PA |
9743 | switch (packet_ok (rs->buf, |
9744 | &remote_protocol_packets[PACKET_vKill])) | |
9745 | { | |
9746 | case PACKET_OK: | |
9747 | return 0; | |
9748 | case PACKET_ERROR: | |
9749 | return 1; | |
9750 | case PACKET_UNKNOWN: | |
9751 | return -1; | |
9752 | default: | |
9753 | internal_error (__FILE__, __LINE__, _("Bad result from packet_ok")); | |
9754 | } | |
82f73884 PA |
9755 | } |
9756 | ||
8020350c DB |
9757 | /* Send a kill request to the target using the 'k' packet. */ |
9758 | ||
6b8edb51 PA |
9759 | void |
9760 | remote_target::remote_kill_k () | |
82f73884 | 9761 | { |
8020350c DB |
9762 | /* Catch errors so the user can quit from gdb even when we |
9763 | aren't on speaking terms with the remote system. */ | |
a70b8144 | 9764 | try |
82f73884 | 9765 | { |
82f73884 | 9766 | putpkt ("k"); |
82f73884 | 9767 | } |
230d2906 | 9768 | catch (const gdb_exception_error &ex) |
8020350c DB |
9769 | { |
9770 | if (ex.error == TARGET_CLOSE_ERROR) | |
9771 | { | |
9772 | /* If we got an (EOF) error that caused the target | |
9773 | to go away, then we're done, that's what we wanted. | |
9774 | "k" is susceptible to cause a premature EOF, given | |
9775 | that the remote server isn't actually required to | |
9776 | reply to "k", and it can happen that it doesn't | |
9777 | even get to reply ACK to the "k". */ | |
9778 | return; | |
9779 | } | |
82f73884 | 9780 | |
8020350c DB |
9781 | /* Otherwise, something went wrong. We didn't actually kill |
9782 | the target. Just propagate the exception, and let the | |
9783 | user or higher layers decide what to do. */ | |
eedc3f4f | 9784 | throw; |
8020350c | 9785 | } |
82f73884 PA |
9786 | } |
9787 | ||
f6ac5f3d PA |
9788 | void |
9789 | remote_target::mourn_inferior () | |
c906108c | 9790 | { |
8020350c | 9791 | struct remote_state *rs = get_remote_state (); |
ce5ce7ed | 9792 | |
9607784a PA |
9793 | /* We're no longer interested in notification events of an inferior |
9794 | that exited or was killed/detached. */ | |
9795 | discard_pending_stop_replies (current_inferior ()); | |
9796 | ||
8020350c DB |
9797 | /* In 'target remote' mode with one inferior, we close the connection. */ |
9798 | if (!rs->extended && number_of_live_inferiors () <= 1) | |
9799 | { | |
f6ac5f3d | 9800 | unpush_target (this); |
c906108c | 9801 | |
8020350c DB |
9802 | /* remote_close takes care of doing most of the clean up. */ |
9803 | generic_mourn_inferior (); | |
9804 | return; | |
9805 | } | |
c906108c | 9806 | |
e24a49d8 PA |
9807 | /* In case we got here due to an error, but we're going to stay |
9808 | connected. */ | |
9809 | rs->waiting_for_stop_reply = 0; | |
9810 | ||
dc1981d7 PA |
9811 | /* If the current general thread belonged to the process we just |
9812 | detached from or has exited, the remote side current general | |
9813 | thread becomes undefined. Considering a case like this: | |
9814 | ||
9815 | - We just got here due to a detach. | |
9816 | - The process that we're detaching from happens to immediately | |
9817 | report a global breakpoint being hit in non-stop mode, in the | |
9818 | same thread we had selected before. | |
9819 | - GDB attaches to this process again. | |
9820 | - This event happens to be the next event we handle. | |
9821 | ||
9822 | GDB would consider that the current general thread didn't need to | |
9823 | be set on the stub side (with Hg), since for all it knew, | |
9824 | GENERAL_THREAD hadn't changed. | |
9825 | ||
9826 | Notice that although in all-stop mode, the remote server always | |
9827 | sets the current thread to the thread reporting the stop event, | |
9828 | that doesn't happen in non-stop mode; in non-stop, the stub *must | |
9829 | not* change the current thread when reporting a breakpoint hit, | |
9830 | due to the decoupling of event reporting and event handling. | |
9831 | ||
9832 | To keep things simple, we always invalidate our notion of the | |
9833 | current thread. */ | |
47f8a51d | 9834 | record_currthread (rs, minus_one_ptid); |
dc1981d7 | 9835 | |
8020350c | 9836 | /* Call common code to mark the inferior as not running. */ |
48aa3c27 PA |
9837 | generic_mourn_inferior (); |
9838 | ||
d729566a | 9839 | if (!have_inferiors ()) |
2d717e4f | 9840 | { |
82f73884 PA |
9841 | if (!remote_multi_process_p (rs)) |
9842 | { | |
9843 | /* Check whether the target is running now - some remote stubs | |
9844 | automatically restart after kill. */ | |
9845 | putpkt ("?"); | |
8d64371b | 9846 | getpkt (&rs->buf, 0); |
82f73884 PA |
9847 | |
9848 | if (rs->buf[0] == 'S' || rs->buf[0] == 'T') | |
9849 | { | |
3e43a32a MS |
9850 | /* Assume that the target has been restarted. Set |
9851 | inferior_ptid so that bits of core GDB realizes | |
9852 | there's something here, e.g., so that the user can | |
9853 | say "kill" again. */ | |
82f73884 PA |
9854 | inferior_ptid = magic_null_ptid; |
9855 | } | |
82f73884 | 9856 | } |
2d717e4f DJ |
9857 | } |
9858 | } | |
c906108c | 9859 | |
57810aa7 | 9860 | bool |
f6ac5f3d | 9861 | extended_remote_target::supports_disable_randomization () |
03583c20 | 9862 | { |
4082afcc | 9863 | return packet_support (PACKET_QDisableRandomization) == PACKET_ENABLE; |
03583c20 UW |
9864 | } |
9865 | ||
6b8edb51 PA |
9866 | void |
9867 | remote_target::extended_remote_disable_randomization (int val) | |
03583c20 UW |
9868 | { |
9869 | struct remote_state *rs = get_remote_state (); | |
9870 | char *reply; | |
9871 | ||
8d64371b TT |
9872 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
9873 | "QDisableRandomization:%x", val); | |
03583c20 | 9874 | putpkt (rs->buf); |
b6bb3468 | 9875 | reply = remote_get_noisy_reply (); |
03583c20 UW |
9876 | if (*reply == '\0') |
9877 | error (_("Target does not support QDisableRandomization.")); | |
9878 | if (strcmp (reply, "OK") != 0) | |
9879 | error (_("Bogus QDisableRandomization reply from target: %s"), reply); | |
9880 | } | |
9881 | ||
6b8edb51 PA |
9882 | int |
9883 | remote_target::extended_remote_run (const std::string &args) | |
2d717e4f DJ |
9884 | { |
9885 | struct remote_state *rs = get_remote_state (); | |
2d717e4f | 9886 | int len; |
94585166 | 9887 | const char *remote_exec_file = get_remote_exec_file (); |
c906108c | 9888 | |
2d717e4f DJ |
9889 | /* If the user has disabled vRun support, or we have detected that |
9890 | support is not available, do not try it. */ | |
4082afcc | 9891 | if (packet_support (PACKET_vRun) == PACKET_DISABLE) |
2d717e4f | 9892 | return -1; |
424163ea | 9893 | |
8d64371b TT |
9894 | strcpy (rs->buf.data (), "vRun;"); |
9895 | len = strlen (rs->buf.data ()); | |
c906108c | 9896 | |
2d717e4f DJ |
9897 | if (strlen (remote_exec_file) * 2 + len >= get_remote_packet_size ()) |
9898 | error (_("Remote file name too long for run packet")); | |
8d64371b | 9899 | len += 2 * bin2hex ((gdb_byte *) remote_exec_file, rs->buf.data () + len, |
9f1b45b0 | 9900 | strlen (remote_exec_file)); |
2d717e4f | 9901 | |
7c5ded6a | 9902 | if (!args.empty ()) |
2d717e4f | 9903 | { |
2d717e4f | 9904 | int i; |
2d717e4f | 9905 | |
773a1edc | 9906 | gdb_argv argv (args.c_str ()); |
2d717e4f DJ |
9907 | for (i = 0; argv[i] != NULL; i++) |
9908 | { | |
9909 | if (strlen (argv[i]) * 2 + 1 + len >= get_remote_packet_size ()) | |
9910 | error (_("Argument list too long for run packet")); | |
9911 | rs->buf[len++] = ';'; | |
8d64371b | 9912 | len += 2 * bin2hex ((gdb_byte *) argv[i], rs->buf.data () + len, |
9f1b45b0 | 9913 | strlen (argv[i])); |
2d717e4f | 9914 | } |
2d717e4f DJ |
9915 | } |
9916 | ||
9917 | rs->buf[len++] = '\0'; | |
9918 | ||
9919 | putpkt (rs->buf); | |
8d64371b | 9920 | getpkt (&rs->buf, 0); |
2d717e4f | 9921 | |
4082afcc | 9922 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_vRun])) |
2d717e4f | 9923 | { |
4082afcc | 9924 | case PACKET_OK: |
3405876a | 9925 | /* We have a wait response. All is well. */ |
2d717e4f | 9926 | return 0; |
4082afcc PA |
9927 | case PACKET_UNKNOWN: |
9928 | return -1; | |
9929 | case PACKET_ERROR: | |
2d717e4f DJ |
9930 | if (remote_exec_file[0] == '\0') |
9931 | error (_("Running the default executable on the remote target failed; " | |
9932 | "try \"set remote exec-file\"?")); | |
9933 | else | |
9934 | error (_("Running \"%s\" on the remote target failed"), | |
9935 | remote_exec_file); | |
4082afcc PA |
9936 | default: |
9937 | gdb_assert_not_reached (_("bad switch")); | |
2d717e4f | 9938 | } |
c906108c SS |
9939 | } |
9940 | ||
0a2dde4a SDJ |
9941 | /* Helper function to send set/unset environment packets. ACTION is |
9942 | either "set" or "unset". PACKET is either "QEnvironmentHexEncoded" | |
9943 | or "QEnvironmentUnsetVariable". VALUE is the variable to be | |
9944 | sent. */ | |
9945 | ||
6b8edb51 PA |
9946 | void |
9947 | remote_target::send_environment_packet (const char *action, | |
9948 | const char *packet, | |
9949 | const char *value) | |
0a2dde4a | 9950 | { |
6b8edb51 PA |
9951 | remote_state *rs = get_remote_state (); |
9952 | ||
0a2dde4a SDJ |
9953 | /* Convert the environment variable to an hex string, which |
9954 | is the best format to be transmitted over the wire. */ | |
9955 | std::string encoded_value = bin2hex ((const gdb_byte *) value, | |
9956 | strlen (value)); | |
9957 | ||
8d64371b | 9958 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
0a2dde4a SDJ |
9959 | "%s:%s", packet, encoded_value.c_str ()); |
9960 | ||
9961 | putpkt (rs->buf); | |
8d64371b TT |
9962 | getpkt (&rs->buf, 0); |
9963 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
9964 | warning (_("Unable to %s environment variable '%s' on remote."), |
9965 | action, value); | |
9966 | } | |
9967 | ||
9968 | /* Helper function to handle the QEnvironment* packets. */ | |
9969 | ||
6b8edb51 PA |
9970 | void |
9971 | remote_target::extended_remote_environment_support () | |
0a2dde4a | 9972 | { |
6b8edb51 PA |
9973 | remote_state *rs = get_remote_state (); |
9974 | ||
0a2dde4a SDJ |
9975 | if (packet_support (PACKET_QEnvironmentReset) != PACKET_DISABLE) |
9976 | { | |
9977 | putpkt ("QEnvironmentReset"); | |
8d64371b TT |
9978 | getpkt (&rs->buf, 0); |
9979 | if (strcmp (rs->buf.data (), "OK") != 0) | |
0a2dde4a SDJ |
9980 | warning (_("Unable to reset environment on remote.")); |
9981 | } | |
9982 | ||
9983 | gdb_environ *e = ¤t_inferior ()->environment; | |
9984 | ||
9985 | if (packet_support (PACKET_QEnvironmentHexEncoded) != PACKET_DISABLE) | |
9986 | for (const std::string &el : e->user_set_env ()) | |
6b8edb51 | 9987 | send_environment_packet ("set", "QEnvironmentHexEncoded", |
0a2dde4a SDJ |
9988 | el.c_str ()); |
9989 | ||
9990 | if (packet_support (PACKET_QEnvironmentUnset) != PACKET_DISABLE) | |
9991 | for (const std::string &el : e->user_unset_env ()) | |
6b8edb51 | 9992 | send_environment_packet ("unset", "QEnvironmentUnset", el.c_str ()); |
0a2dde4a SDJ |
9993 | } |
9994 | ||
bc3b087d SDJ |
9995 | /* Helper function to set the current working directory for the |
9996 | inferior in the remote target. */ | |
9997 | ||
6b8edb51 PA |
9998 | void |
9999 | remote_target::extended_remote_set_inferior_cwd () | |
bc3b087d SDJ |
10000 | { |
10001 | if (packet_support (PACKET_QSetWorkingDir) != PACKET_DISABLE) | |
10002 | { | |
10003 | const char *inferior_cwd = get_inferior_cwd (); | |
6b8edb51 | 10004 | remote_state *rs = get_remote_state (); |
bc3b087d SDJ |
10005 | |
10006 | if (inferior_cwd != NULL) | |
10007 | { | |
10008 | std::string hexpath = bin2hex ((const gdb_byte *) inferior_cwd, | |
10009 | strlen (inferior_cwd)); | |
10010 | ||
8d64371b | 10011 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10012 | "QSetWorkingDir:%s", hexpath.c_str ()); |
10013 | } | |
10014 | else | |
10015 | { | |
10016 | /* An empty inferior_cwd means that the user wants us to | |
10017 | reset the remote server's inferior's cwd. */ | |
8d64371b | 10018 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
bc3b087d SDJ |
10019 | "QSetWorkingDir:"); |
10020 | } | |
10021 | ||
10022 | putpkt (rs->buf); | |
8d64371b | 10023 | getpkt (&rs->buf, 0); |
bc3b087d SDJ |
10024 | if (packet_ok (rs->buf, |
10025 | &remote_protocol_packets[PACKET_QSetWorkingDir]) | |
10026 | != PACKET_OK) | |
10027 | error (_("\ | |
10028 | Remote replied unexpectedly while setting the inferior's working\n\ | |
10029 | directory: %s"), | |
8d64371b | 10030 | rs->buf.data ()); |
bc3b087d SDJ |
10031 | |
10032 | } | |
10033 | } | |
10034 | ||
2d717e4f DJ |
10035 | /* In the extended protocol we want to be able to do things like |
10036 | "run" and have them basically work as expected. So we need | |
10037 | a special create_inferior function. We support changing the | |
10038 | executable file and the command line arguments, but not the | |
10039 | environment. */ | |
10040 | ||
f6ac5f3d PA |
10041 | void |
10042 | extended_remote_target::create_inferior (const char *exec_file, | |
10043 | const std::string &args, | |
10044 | char **env, int from_tty) | |
43ff13b4 | 10045 | { |
3405876a PA |
10046 | int run_worked; |
10047 | char *stop_reply; | |
10048 | struct remote_state *rs = get_remote_state (); | |
94585166 | 10049 | const char *remote_exec_file = get_remote_exec_file (); |
3405876a | 10050 | |
43ff13b4 | 10051 | /* If running asynchronously, register the target file descriptor |
23860348 | 10052 | with the event loop. */ |
75c99385 | 10053 | if (target_can_async_p ()) |
6a3753b3 | 10054 | target_async (1); |
43ff13b4 | 10055 | |
03583c20 | 10056 | /* Disable address space randomization if requested (and supported). */ |
f6ac5f3d | 10057 | if (supports_disable_randomization ()) |
03583c20 UW |
10058 | extended_remote_disable_randomization (disable_randomization); |
10059 | ||
aefd8b33 SDJ |
10060 | /* If startup-with-shell is on, we inform gdbserver to start the |
10061 | remote inferior using a shell. */ | |
10062 | if (packet_support (PACKET_QStartupWithShell) != PACKET_DISABLE) | |
10063 | { | |
8d64371b | 10064 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
aefd8b33 SDJ |
10065 | "QStartupWithShell:%d", startup_with_shell ? 1 : 0); |
10066 | putpkt (rs->buf); | |
8d64371b TT |
10067 | getpkt (&rs->buf, 0); |
10068 | if (strcmp (rs->buf.data (), "OK") != 0) | |
aefd8b33 SDJ |
10069 | error (_("\ |
10070 | Remote replied unexpectedly while setting startup-with-shell: %s"), | |
8d64371b | 10071 | rs->buf.data ()); |
aefd8b33 SDJ |
10072 | } |
10073 | ||
6b8edb51 | 10074 | extended_remote_environment_support (); |
0a2dde4a | 10075 | |
6b8edb51 | 10076 | extended_remote_set_inferior_cwd (); |
bc3b087d | 10077 | |
43ff13b4 | 10078 | /* Now restart the remote server. */ |
3405876a PA |
10079 | run_worked = extended_remote_run (args) != -1; |
10080 | if (!run_worked) | |
2d717e4f DJ |
10081 | { |
10082 | /* vRun was not supported. Fail if we need it to do what the | |
10083 | user requested. */ | |
10084 | if (remote_exec_file[0]) | |
10085 | error (_("Remote target does not support \"set remote exec-file\"")); | |
7c5ded6a | 10086 | if (!args.empty ()) |
65e65158 | 10087 | error (_("Remote target does not support \"set args\" or run ARGS")); |
43ff13b4 | 10088 | |
2d717e4f DJ |
10089 | /* Fall back to "R". */ |
10090 | extended_remote_restart (); | |
10091 | } | |
424163ea | 10092 | |
3405876a | 10093 | /* vRun's success return is a stop reply. */ |
8d64371b | 10094 | stop_reply = run_worked ? rs->buf.data () : NULL; |
3405876a | 10095 | add_current_inferior_and_thread (stop_reply); |
c0a2216e | 10096 | |
2d717e4f DJ |
10097 | /* Get updated offsets, if the stub uses qOffsets. */ |
10098 | get_offsets (); | |
2d717e4f | 10099 | } |
c906108c | 10100 | \f |
c5aa993b | 10101 | |
b775012e LM |
10102 | /* Given a location's target info BP_TGT and the packet buffer BUF, output |
10103 | the list of conditions (in agent expression bytecode format), if any, the | |
10104 | target needs to evaluate. The output is placed into the packet buffer | |
bba74b36 | 10105 | started from BUF and ended at BUF_END. */ |
b775012e LM |
10106 | |
10107 | static int | |
10108 | remote_add_target_side_condition (struct gdbarch *gdbarch, | |
bba74b36 YQ |
10109 | struct bp_target_info *bp_tgt, char *buf, |
10110 | char *buf_end) | |
b775012e | 10111 | { |
3cde5c42 | 10112 | if (bp_tgt->conditions.empty ()) |
b775012e LM |
10113 | return 0; |
10114 | ||
10115 | buf += strlen (buf); | |
bba74b36 | 10116 | xsnprintf (buf, buf_end - buf, "%s", ";"); |
b775012e LM |
10117 | buf++; |
10118 | ||
83621223 | 10119 | /* Send conditions to the target. */ |
d538e36d | 10120 | for (agent_expr *aexpr : bp_tgt->conditions) |
b775012e | 10121 | { |
bba74b36 | 10122 | xsnprintf (buf, buf_end - buf, "X%x,", aexpr->len); |
b775012e | 10123 | buf += strlen (buf); |
3cde5c42 | 10124 | for (int i = 0; i < aexpr->len; ++i) |
b775012e LM |
10125 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10126 | *buf = '\0'; | |
10127 | } | |
b775012e LM |
10128 | return 0; |
10129 | } | |
10130 | ||
d3ce09f5 SS |
10131 | static void |
10132 | remote_add_target_side_commands (struct gdbarch *gdbarch, | |
10133 | struct bp_target_info *bp_tgt, char *buf) | |
10134 | { | |
3cde5c42 | 10135 | if (bp_tgt->tcommands.empty ()) |
d3ce09f5 SS |
10136 | return; |
10137 | ||
10138 | buf += strlen (buf); | |
10139 | ||
10140 | sprintf (buf, ";cmds:%x,", bp_tgt->persist); | |
10141 | buf += strlen (buf); | |
10142 | ||
10143 | /* Concatenate all the agent expressions that are commands into the | |
10144 | cmds parameter. */ | |
df97be55 | 10145 | for (agent_expr *aexpr : bp_tgt->tcommands) |
d3ce09f5 SS |
10146 | { |
10147 | sprintf (buf, "X%x,", aexpr->len); | |
10148 | buf += strlen (buf); | |
3cde5c42 | 10149 | for (int i = 0; i < aexpr->len; ++i) |
d3ce09f5 SS |
10150 | buf = pack_hex_byte (buf, aexpr->buf[i]); |
10151 | *buf = '\0'; | |
10152 | } | |
d3ce09f5 SS |
10153 | } |
10154 | ||
8181d85f DJ |
10155 | /* Insert a breakpoint. On targets that have software breakpoint |
10156 | support, we ask the remote target to do the work; on targets | |
10157 | which don't, we insert a traditional memory breakpoint. */ | |
c906108c | 10158 | |
f6ac5f3d PA |
10159 | int |
10160 | remote_target::insert_breakpoint (struct gdbarch *gdbarch, | |
10161 | struct bp_target_info *bp_tgt) | |
c906108c | 10162 | { |
d471ea57 AC |
10163 | /* Try the "Z" s/w breakpoint packet if it is not already disabled. |
10164 | If it succeeds, then set the support to PACKET_ENABLE. If it | |
10165 | fails, and the user has explicitly requested the Z support then | |
23860348 | 10166 | report an error, otherwise, mark it disabled and go on. */ |
802188a7 | 10167 | |
4082afcc | 10168 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10169 | { |
0d5ed153 | 10170 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10171 | struct remote_state *rs; |
bba74b36 | 10172 | char *p, *endbuf; |
4fff2411 | 10173 | |
28439a30 PA |
10174 | /* Make sure the remote is pointing at the right process, if |
10175 | necessary. */ | |
10176 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10177 | set_general_process (); | |
10178 | ||
4fff2411 | 10179 | rs = get_remote_state (); |
8d64371b TT |
10180 | p = rs->buf.data (); |
10181 | endbuf = p + get_remote_packet_size (); | |
802188a7 | 10182 | |
96baa820 JM |
10183 | *(p++) = 'Z'; |
10184 | *(p++) = '0'; | |
10185 | *(p++) = ','; | |
7c0f6dcc | 10186 | addr = (ULONGEST) remote_address_masked (addr); |
8181d85f | 10187 | p += hexnumstr (p, addr); |
579c6ad9 | 10188 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10189 | |
f6ac5f3d | 10190 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10191 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10192 | |
f6ac5f3d | 10193 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10194 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10195 | ||
6d820c5c | 10196 | putpkt (rs->buf); |
8d64371b | 10197 | getpkt (&rs->buf, 0); |
96baa820 | 10198 | |
6d820c5c | 10199 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0])) |
96baa820 | 10200 | { |
d471ea57 AC |
10201 | case PACKET_ERROR: |
10202 | return -1; | |
10203 | case PACKET_OK: | |
10204 | return 0; | |
10205 | case PACKET_UNKNOWN: | |
10206 | break; | |
96baa820 JM |
10207 | } |
10208 | } | |
c906108c | 10209 | |
0000e5cc PA |
10210 | /* If this breakpoint has target-side commands but this stub doesn't |
10211 | support Z0 packets, throw error. */ | |
3cde5c42 | 10212 | if (!bp_tgt->tcommands.empty ()) |
0000e5cc PA |
10213 | throw_error (NOT_SUPPORTED_ERROR, _("\ |
10214 | Target doesn't support breakpoints that have target side commands.")); | |
10215 | ||
f6ac5f3d | 10216 | return memory_insert_breakpoint (this, gdbarch, bp_tgt); |
c906108c SS |
10217 | } |
10218 | ||
f6ac5f3d PA |
10219 | int |
10220 | remote_target::remove_breakpoint (struct gdbarch *gdbarch, | |
10221 | struct bp_target_info *bp_tgt, | |
10222 | enum remove_bp_reason reason) | |
c906108c | 10223 | { |
8181d85f | 10224 | CORE_ADDR addr = bp_tgt->placed_address; |
d01949b6 | 10225 | struct remote_state *rs = get_remote_state (); |
96baa820 | 10226 | |
4082afcc | 10227 | if (packet_support (PACKET_Z0) != PACKET_DISABLE) |
96baa820 | 10228 | { |
8d64371b TT |
10229 | char *p = rs->buf.data (); |
10230 | char *endbuf = p + get_remote_packet_size (); | |
802188a7 | 10231 | |
28439a30 PA |
10232 | /* Make sure the remote is pointing at the right process, if |
10233 | necessary. */ | |
10234 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10235 | set_general_process (); | |
10236 | ||
96baa820 JM |
10237 | *(p++) = 'z'; |
10238 | *(p++) = '0'; | |
10239 | *(p++) = ','; | |
10240 | ||
8181d85f DJ |
10241 | addr = (ULONGEST) remote_address_masked (bp_tgt->placed_address); |
10242 | p += hexnumstr (p, addr); | |
579c6ad9 | 10243 | xsnprintf (p, endbuf - p, ",%d", bp_tgt->kind); |
802188a7 | 10244 | |
6d820c5c | 10245 | putpkt (rs->buf); |
8d64371b | 10246 | getpkt (&rs->buf, 0); |
96baa820 | 10247 | |
6d820c5c | 10248 | return (rs->buf[0] == 'E'); |
96baa820 JM |
10249 | } |
10250 | ||
f6ac5f3d | 10251 | return memory_remove_breakpoint (this, gdbarch, bp_tgt, reason); |
c906108c SS |
10252 | } |
10253 | ||
f486487f | 10254 | static enum Z_packet_type |
d471ea57 AC |
10255 | watchpoint_to_Z_packet (int type) |
10256 | { | |
10257 | switch (type) | |
10258 | { | |
10259 | case hw_write: | |
bb858e6a | 10260 | return Z_PACKET_WRITE_WP; |
d471ea57 AC |
10261 | break; |
10262 | case hw_read: | |
bb858e6a | 10263 | return Z_PACKET_READ_WP; |
d471ea57 AC |
10264 | break; |
10265 | case hw_access: | |
bb858e6a | 10266 | return Z_PACKET_ACCESS_WP; |
d471ea57 AC |
10267 | break; |
10268 | default: | |
8e65ff28 | 10269 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10270 | _("hw_bp_to_z: bad watchpoint type %d"), type); |
d471ea57 AC |
10271 | } |
10272 | } | |
10273 | ||
f6ac5f3d PA |
10274 | int |
10275 | remote_target::insert_watchpoint (CORE_ADDR addr, int len, | |
10276 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10277 | { |
d01949b6 | 10278 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10279 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10280 | char *p; |
d471ea57 | 10281 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
96baa820 | 10282 | |
4082afcc | 10283 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
85d721b8 | 10284 | return 1; |
802188a7 | 10285 | |
28439a30 PA |
10286 | /* Make sure the remote is pointing at the right process, if |
10287 | necessary. */ | |
10288 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10289 | set_general_process (); | |
10290 | ||
8d64371b TT |
10291 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "Z%x,", packet); |
10292 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10293 | addr = remote_address_masked (addr); |
10294 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10295 | xsnprintf (p, endbuf - p, ",%x", len); |
802188a7 | 10296 | |
6d820c5c | 10297 | putpkt (rs->buf); |
8d64371b | 10298 | getpkt (&rs->buf, 0); |
96baa820 | 10299 | |
6d820c5c | 10300 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10301 | { |
10302 | case PACKET_ERROR: | |
d471ea57 | 10303 | return -1; |
85d721b8 PA |
10304 | case PACKET_UNKNOWN: |
10305 | return 1; | |
d471ea57 AC |
10306 | case PACKET_OK: |
10307 | return 0; | |
10308 | } | |
8e65ff28 | 10309 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10310 | _("remote_insert_watchpoint: reached end of function")); |
96baa820 JM |
10311 | } |
10312 | ||
57810aa7 | 10313 | bool |
f6ac5f3d PA |
10314 | remote_target::watchpoint_addr_within_range (CORE_ADDR addr, |
10315 | CORE_ADDR start, int length) | |
283002cf MR |
10316 | { |
10317 | CORE_ADDR diff = remote_address_masked (addr - start); | |
10318 | ||
10319 | return diff < length; | |
10320 | } | |
10321 | ||
d471ea57 | 10322 | |
f6ac5f3d PA |
10323 | int |
10324 | remote_target::remove_watchpoint (CORE_ADDR addr, int len, | |
10325 | enum target_hw_bp_type type, struct expression *cond) | |
96baa820 | 10326 | { |
d01949b6 | 10327 | struct remote_state *rs = get_remote_state (); |
8d64371b | 10328 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
e514a9d6 | 10329 | char *p; |
d471ea57 AC |
10330 | enum Z_packet_type packet = watchpoint_to_Z_packet (type); |
10331 | ||
4082afcc | 10332 | if (packet_support (PACKET_Z0 + packet) == PACKET_DISABLE) |
5cffb350 | 10333 | return -1; |
802188a7 | 10334 | |
28439a30 PA |
10335 | /* Make sure the remote is pointing at the right process, if |
10336 | necessary. */ | |
10337 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10338 | set_general_process (); | |
10339 | ||
8d64371b TT |
10340 | xsnprintf (rs->buf.data (), endbuf - rs->buf.data (), "z%x,", packet); |
10341 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 JM |
10342 | addr = remote_address_masked (addr); |
10343 | p += hexnumstr (p, (ULONGEST) addr); | |
bba74b36 | 10344 | xsnprintf (p, endbuf - p, ",%x", len); |
6d820c5c | 10345 | putpkt (rs->buf); |
8d64371b | 10346 | getpkt (&rs->buf, 0); |
96baa820 | 10347 | |
6d820c5c | 10348 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z0 + packet])) |
d471ea57 AC |
10349 | { |
10350 | case PACKET_ERROR: | |
10351 | case PACKET_UNKNOWN: | |
10352 | return -1; | |
10353 | case PACKET_OK: | |
10354 | return 0; | |
10355 | } | |
8e65ff28 | 10356 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10357 | _("remote_remove_watchpoint: reached end of function")); |
96baa820 JM |
10358 | } |
10359 | ||
3c3bea1c | 10360 | |
60fcc1c3 TT |
10361 | static int remote_hw_watchpoint_limit = -1; |
10362 | static int remote_hw_watchpoint_length_limit = -1; | |
10363 | static int remote_hw_breakpoint_limit = -1; | |
d471ea57 | 10364 | |
f6ac5f3d PA |
10365 | int |
10366 | remote_target::region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) | |
480a3f21 PW |
10367 | { |
10368 | if (remote_hw_watchpoint_length_limit == 0) | |
10369 | return 0; | |
10370 | else if (remote_hw_watchpoint_length_limit < 0) | |
10371 | return 1; | |
10372 | else if (len <= remote_hw_watchpoint_length_limit) | |
10373 | return 1; | |
10374 | else | |
10375 | return 0; | |
10376 | } | |
10377 | ||
f6ac5f3d PA |
10378 | int |
10379 | remote_target::can_use_hw_breakpoint (enum bptype type, int cnt, int ot) | |
96baa820 | 10380 | { |
3c3bea1c GS |
10381 | if (type == bp_hardware_breakpoint) |
10382 | { | |
10383 | if (remote_hw_breakpoint_limit == 0) | |
10384 | return 0; | |
501eef12 AC |
10385 | else if (remote_hw_breakpoint_limit < 0) |
10386 | return 1; | |
3c3bea1c GS |
10387 | else if (cnt <= remote_hw_breakpoint_limit) |
10388 | return 1; | |
10389 | } | |
10390 | else | |
10391 | { | |
10392 | if (remote_hw_watchpoint_limit == 0) | |
10393 | return 0; | |
501eef12 AC |
10394 | else if (remote_hw_watchpoint_limit < 0) |
10395 | return 1; | |
3c3bea1c GS |
10396 | else if (ot) |
10397 | return -1; | |
10398 | else if (cnt <= remote_hw_watchpoint_limit) | |
10399 | return 1; | |
10400 | } | |
10401 | return -1; | |
10402 | } | |
10403 | ||
f7e6eed5 PA |
10404 | /* The to_stopped_by_sw_breakpoint method of target remote. */ |
10405 | ||
57810aa7 | 10406 | bool |
f6ac5f3d | 10407 | remote_target::stopped_by_sw_breakpoint () |
f7e6eed5 | 10408 | { |
799a2abe | 10409 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10410 | |
799a2abe | 10411 | return (thread->priv != NULL |
7aabaf9d SM |
10412 | && (get_remote_thread_info (thread)->stop_reason |
10413 | == TARGET_STOPPED_BY_SW_BREAKPOINT)); | |
f7e6eed5 PA |
10414 | } |
10415 | ||
10416 | /* The to_supports_stopped_by_sw_breakpoint method of target | |
10417 | remote. */ | |
10418 | ||
57810aa7 | 10419 | bool |
f6ac5f3d | 10420 | remote_target::supports_stopped_by_sw_breakpoint () |
f7e6eed5 | 10421 | { |
f7e6eed5 PA |
10422 | return (packet_support (PACKET_swbreak_feature) == PACKET_ENABLE); |
10423 | } | |
10424 | ||
10425 | /* The to_stopped_by_hw_breakpoint method of target remote. */ | |
10426 | ||
57810aa7 | 10427 | bool |
f6ac5f3d | 10428 | remote_target::stopped_by_hw_breakpoint () |
f7e6eed5 | 10429 | { |
799a2abe | 10430 | struct thread_info *thread = inferior_thread (); |
f7e6eed5 | 10431 | |
799a2abe | 10432 | return (thread->priv != NULL |
7aabaf9d SM |
10433 | && (get_remote_thread_info (thread)->stop_reason |
10434 | == TARGET_STOPPED_BY_HW_BREAKPOINT)); | |
f7e6eed5 PA |
10435 | } |
10436 | ||
10437 | /* The to_supports_stopped_by_hw_breakpoint method of target | |
10438 | remote. */ | |
10439 | ||
57810aa7 | 10440 | bool |
f6ac5f3d | 10441 | remote_target::supports_stopped_by_hw_breakpoint () |
f7e6eed5 | 10442 | { |
f7e6eed5 PA |
10443 | return (packet_support (PACKET_hwbreak_feature) == PACKET_ENABLE); |
10444 | } | |
10445 | ||
57810aa7 | 10446 | bool |
f6ac5f3d | 10447 | remote_target::stopped_by_watchpoint () |
3c3bea1c | 10448 | { |
799a2abe | 10449 | struct thread_info *thread = inferior_thread (); |
ee154bee | 10450 | |
799a2abe | 10451 | return (thread->priv != NULL |
7aabaf9d SM |
10452 | && (get_remote_thread_info (thread)->stop_reason |
10453 | == TARGET_STOPPED_BY_WATCHPOINT)); | |
3c3bea1c GS |
10454 | } |
10455 | ||
57810aa7 | 10456 | bool |
f6ac5f3d | 10457 | remote_target::stopped_data_address (CORE_ADDR *addr_p) |
3c3bea1c | 10458 | { |
799a2abe | 10459 | struct thread_info *thread = inferior_thread (); |
a744cf53 | 10460 | |
799a2abe | 10461 | if (thread->priv != NULL |
7aabaf9d SM |
10462 | && (get_remote_thread_info (thread)->stop_reason |
10463 | == TARGET_STOPPED_BY_WATCHPOINT)) | |
4aa7a7f5 | 10464 | { |
7aabaf9d | 10465 | *addr_p = get_remote_thread_info (thread)->watch_data_address; |
57810aa7 | 10466 | return true; |
4aa7a7f5 JJ |
10467 | } |
10468 | ||
57810aa7 | 10469 | return false; |
3c3bea1c GS |
10470 | } |
10471 | ||
10472 | ||
f6ac5f3d PA |
10473 | int |
10474 | remote_target::insert_hw_breakpoint (struct gdbarch *gdbarch, | |
10475 | struct bp_target_info *bp_tgt) | |
3c3bea1c | 10476 | { |
0d5ed153 | 10477 | CORE_ADDR addr = bp_tgt->reqstd_address; |
4fff2411 | 10478 | struct remote_state *rs; |
bba74b36 | 10479 | char *p, *endbuf; |
dd61ec5c | 10480 | char *message; |
3c3bea1c | 10481 | |
4082afcc | 10482 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10483 | return -1; |
2bc416ba | 10484 | |
28439a30 PA |
10485 | /* Make sure the remote is pointing at the right process, if |
10486 | necessary. */ | |
10487 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10488 | set_general_process (); | |
10489 | ||
4fff2411 | 10490 | rs = get_remote_state (); |
8d64371b TT |
10491 | p = rs->buf.data (); |
10492 | endbuf = p + get_remote_packet_size (); | |
4fff2411 | 10493 | |
96baa820 JM |
10494 | *(p++) = 'Z'; |
10495 | *(p++) = '1'; | |
10496 | *(p++) = ','; | |
802188a7 | 10497 | |
0d5ed153 | 10498 | addr = remote_address_masked (addr); |
96baa820 | 10499 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10500 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10501 | |
f6ac5f3d | 10502 | if (supports_evaluation_of_breakpoint_conditions ()) |
bba74b36 | 10503 | remote_add_target_side_condition (gdbarch, bp_tgt, p, endbuf); |
b775012e | 10504 | |
f6ac5f3d | 10505 | if (can_run_breakpoint_commands ()) |
d3ce09f5 SS |
10506 | remote_add_target_side_commands (gdbarch, bp_tgt, p); |
10507 | ||
6d820c5c | 10508 | putpkt (rs->buf); |
8d64371b | 10509 | getpkt (&rs->buf, 0); |
96baa820 | 10510 | |
6d820c5c | 10511 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10512 | { |
10513 | case PACKET_ERROR: | |
dd61ec5c MW |
10514 | if (rs->buf[1] == '.') |
10515 | { | |
8d64371b | 10516 | message = strchr (&rs->buf[2], '.'); |
dd61ec5c | 10517 | if (message) |
0316657e | 10518 | error (_("Remote failure reply: %s"), message + 1); |
dd61ec5c MW |
10519 | } |
10520 | return -1; | |
d471ea57 AC |
10521 | case PACKET_UNKNOWN: |
10522 | return -1; | |
10523 | case PACKET_OK: | |
10524 | return 0; | |
10525 | } | |
8e65ff28 | 10526 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10527 | _("remote_insert_hw_breakpoint: reached end of function")); |
96baa820 JM |
10528 | } |
10529 | ||
d471ea57 | 10530 | |
f6ac5f3d PA |
10531 | int |
10532 | remote_target::remove_hw_breakpoint (struct gdbarch *gdbarch, | |
10533 | struct bp_target_info *bp_tgt) | |
96baa820 | 10534 | { |
8181d85f | 10535 | CORE_ADDR addr; |
d01949b6 | 10536 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
10537 | char *p = rs->buf.data (); |
10538 | char *endbuf = p + get_remote_packet_size (); | |
c8189ed1 | 10539 | |
4082afcc | 10540 | if (packet_support (PACKET_Z1) == PACKET_DISABLE) |
5cffb350 | 10541 | return -1; |
802188a7 | 10542 | |
28439a30 PA |
10543 | /* Make sure the remote is pointing at the right process, if |
10544 | necessary. */ | |
10545 | if (!gdbarch_has_global_breakpoints (target_gdbarch ())) | |
10546 | set_general_process (); | |
10547 | ||
96baa820 JM |
10548 | *(p++) = 'z'; |
10549 | *(p++) = '1'; | |
10550 | *(p++) = ','; | |
802188a7 | 10551 | |
8181d85f | 10552 | addr = remote_address_masked (bp_tgt->placed_address); |
96baa820 | 10553 | p += hexnumstr (p, (ULONGEST) addr); |
579c6ad9 | 10554 | xsnprintf (p, endbuf - p, ",%x", bp_tgt->kind); |
96baa820 | 10555 | |
6d820c5c | 10556 | putpkt (rs->buf); |
8d64371b | 10557 | getpkt (&rs->buf, 0); |
802188a7 | 10558 | |
6d820c5c | 10559 | switch (packet_ok (rs->buf, &remote_protocol_packets[PACKET_Z1])) |
d471ea57 AC |
10560 | { |
10561 | case PACKET_ERROR: | |
10562 | case PACKET_UNKNOWN: | |
10563 | return -1; | |
10564 | case PACKET_OK: | |
10565 | return 0; | |
10566 | } | |
8e65ff28 | 10567 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 10568 | _("remote_remove_hw_breakpoint: reached end of function")); |
96baa820 | 10569 | } |
96baa820 | 10570 | |
4a5e7a5b PA |
10571 | /* Verify memory using the "qCRC:" request. */ |
10572 | ||
f6ac5f3d PA |
10573 | int |
10574 | remote_target::verify_memory (const gdb_byte *data, CORE_ADDR lma, ULONGEST size) | |
4a5e7a5b PA |
10575 | { |
10576 | struct remote_state *rs = get_remote_state (); | |
10577 | unsigned long host_crc, target_crc; | |
10578 | char *tmp; | |
10579 | ||
936d2992 PA |
10580 | /* It doesn't make sense to use qCRC if the remote target is |
10581 | connected but not running. */ | |
10582 | if (target_has_execution && packet_support (PACKET_qCRC) != PACKET_DISABLE) | |
10583 | { | |
10584 | enum packet_result result; | |
28439a30 | 10585 | |
936d2992 PA |
10586 | /* Make sure the remote is pointing at the right process. */ |
10587 | set_general_process (); | |
4a5e7a5b | 10588 | |
936d2992 | 10589 | /* FIXME: assumes lma can fit into long. */ |
8d64371b | 10590 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qCRC:%lx,%lx", |
936d2992 PA |
10591 | (long) lma, (long) size); |
10592 | putpkt (rs->buf); | |
4a5e7a5b | 10593 | |
936d2992 PA |
10594 | /* Be clever; compute the host_crc before waiting for target |
10595 | reply. */ | |
10596 | host_crc = xcrc32 (data, size, 0xffffffff); | |
10597 | ||
8d64371b | 10598 | getpkt (&rs->buf, 0); |
4a5e7a5b | 10599 | |
936d2992 PA |
10600 | result = packet_ok (rs->buf, |
10601 | &remote_protocol_packets[PACKET_qCRC]); | |
10602 | if (result == PACKET_ERROR) | |
10603 | return -1; | |
10604 | else if (result == PACKET_OK) | |
10605 | { | |
10606 | for (target_crc = 0, tmp = &rs->buf[1]; *tmp; tmp++) | |
10607 | target_crc = target_crc * 16 + fromhex (*tmp); | |
4a5e7a5b | 10608 | |
936d2992 PA |
10609 | return (host_crc == target_crc); |
10610 | } | |
10611 | } | |
4a5e7a5b | 10612 | |
f6ac5f3d | 10613 | return simple_verify_memory (this, data, lma, size); |
4a5e7a5b PA |
10614 | } |
10615 | ||
c906108c SS |
10616 | /* compare-sections command |
10617 | ||
10618 | With no arguments, compares each loadable section in the exec bfd | |
10619 | with the same memory range on the target, and reports mismatches. | |
4a5e7a5b | 10620 | Useful for verifying the image on the target against the exec file. */ |
e514a9d6 | 10621 | |
c906108c | 10622 | static void |
ac88e2de | 10623 | compare_sections_command (const char *args, int from_tty) |
c906108c SS |
10624 | { |
10625 | asection *s; | |
ce359b09 | 10626 | const char *sectname; |
c906108c SS |
10627 | bfd_size_type size; |
10628 | bfd_vma lma; | |
10629 | int matched = 0; | |
10630 | int mismatched = 0; | |
4a5e7a5b | 10631 | int res; |
95cf3b38 | 10632 | int read_only = 0; |
c906108c SS |
10633 | |
10634 | if (!exec_bfd) | |
8a3fe4f8 | 10635 | error (_("command cannot be used without an exec file")); |
c906108c | 10636 | |
95cf3b38 DT |
10637 | if (args != NULL && strcmp (args, "-r") == 0) |
10638 | { | |
10639 | read_only = 1; | |
10640 | args = NULL; | |
10641 | } | |
10642 | ||
c5aa993b | 10643 | for (s = exec_bfd->sections; s; s = s->next) |
c906108c SS |
10644 | { |
10645 | if (!(s->flags & SEC_LOAD)) | |
0df8b418 | 10646 | continue; /* Skip non-loadable section. */ |
c906108c | 10647 | |
95cf3b38 DT |
10648 | if (read_only && (s->flags & SEC_READONLY) == 0) |
10649 | continue; /* Skip writeable sections */ | |
10650 | ||
fd361982 | 10651 | size = bfd_section_size (s); |
c906108c | 10652 | if (size == 0) |
0df8b418 | 10653 | continue; /* Skip zero-length section. */ |
c906108c | 10654 | |
fd361982 | 10655 | sectname = bfd_section_name (s); |
c906108c | 10656 | if (args && strcmp (args, sectname) != 0) |
0df8b418 | 10657 | continue; /* Not the section selected by user. */ |
c906108c | 10658 | |
0df8b418 | 10659 | matched = 1; /* Do this section. */ |
c906108c | 10660 | lma = s->lma; |
c906108c | 10661 | |
b80406ac TT |
10662 | gdb::byte_vector sectdata (size); |
10663 | bfd_get_section_contents (exec_bfd, s, sectdata.data (), 0, size); | |
c906108c | 10664 | |
b80406ac | 10665 | res = target_verify_memory (sectdata.data (), lma, size); |
4a5e7a5b PA |
10666 | |
10667 | if (res == -1) | |
5af949e3 | 10668 | error (_("target memory fault, section %s, range %s -- %s"), sectname, |
f5656ead TT |
10669 | paddress (target_gdbarch (), lma), |
10670 | paddress (target_gdbarch (), lma + size)); | |
c906108c | 10671 | |
5af949e3 | 10672 | printf_filtered ("Section %s, range %s -- %s: ", sectname, |
f5656ead TT |
10673 | paddress (target_gdbarch (), lma), |
10674 | paddress (target_gdbarch (), lma + size)); | |
4a5e7a5b | 10675 | if (res) |
c906108c SS |
10676 | printf_filtered ("matched.\n"); |
10677 | else | |
c5aa993b JM |
10678 | { |
10679 | printf_filtered ("MIS-MATCHED!\n"); | |
10680 | mismatched++; | |
10681 | } | |
c906108c SS |
10682 | } |
10683 | if (mismatched > 0) | |
936d2992 | 10684 | warning (_("One or more sections of the target image does not match\n\ |
8a3fe4f8 | 10685 | the loaded file\n")); |
c906108c | 10686 | if (args && !matched) |
a3f17187 | 10687 | printf_filtered (_("No loaded section named '%s'.\n"), args); |
c906108c SS |
10688 | } |
10689 | ||
0e7f50da UW |
10690 | /* Write LEN bytes from WRITEBUF into OBJECT_NAME/ANNEX at OFFSET |
10691 | into remote target. The number of bytes written to the remote | |
10692 | target is returned, or -1 for error. */ | |
10693 | ||
6b8edb51 PA |
10694 | target_xfer_status |
10695 | remote_target::remote_write_qxfer (const char *object_name, | |
10696 | const char *annex, const gdb_byte *writebuf, | |
10697 | ULONGEST offset, LONGEST len, | |
10698 | ULONGEST *xfered_len, | |
10699 | struct packet_config *packet) | |
0e7f50da UW |
10700 | { |
10701 | int i, buf_len; | |
10702 | ULONGEST n; | |
0e7f50da UW |
10703 | struct remote_state *rs = get_remote_state (); |
10704 | int max_size = get_memory_write_packet_size (); | |
10705 | ||
7cc244de | 10706 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10707 | return TARGET_XFER_E_IO; |
0e7f50da UW |
10708 | |
10709 | /* Insert header. */ | |
8d64371b | 10710 | i = snprintf (rs->buf.data (), max_size, |
0e7f50da UW |
10711 | "qXfer:%s:write:%s:%s:", |
10712 | object_name, annex ? annex : "", | |
10713 | phex_nz (offset, sizeof offset)); | |
10714 | max_size -= (i + 1); | |
10715 | ||
10716 | /* Escape as much data as fits into rs->buf. */ | |
10717 | buf_len = remote_escape_output | |
8d64371b | 10718 | (writebuf, len, 1, (gdb_byte *) rs->buf.data () + i, &max_size, max_size); |
0e7f50da | 10719 | |
8d64371b TT |
10720 | if (putpkt_binary (rs->buf.data (), i + buf_len) < 0 |
10721 | || getpkt_sane (&rs->buf, 0) < 0 | |
0e7f50da | 10722 | || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 10723 | return TARGET_XFER_E_IO; |
0e7f50da | 10724 | |
8d64371b | 10725 | unpack_varlen_hex (rs->buf.data (), &n); |
9b409511 YQ |
10726 | |
10727 | *xfered_len = n; | |
92ffd475 | 10728 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
0e7f50da UW |
10729 | } |
10730 | ||
0876f84a DJ |
10731 | /* Read OBJECT_NAME/ANNEX from the remote target using a qXfer packet. |
10732 | Data at OFFSET, of up to LEN bytes, is read into READBUF; the | |
10733 | number of bytes read is returned, or 0 for EOF, or -1 for error. | |
10734 | The number of bytes read may be less than LEN without indicating an | |
10735 | EOF. PACKET is checked and updated to indicate whether the remote | |
10736 | target supports this object. */ | |
10737 | ||
6b8edb51 PA |
10738 | target_xfer_status |
10739 | remote_target::remote_read_qxfer (const char *object_name, | |
10740 | const char *annex, | |
10741 | gdb_byte *readbuf, ULONGEST offset, | |
10742 | LONGEST len, | |
10743 | ULONGEST *xfered_len, | |
10744 | struct packet_config *packet) | |
0876f84a | 10745 | { |
0876f84a | 10746 | struct remote_state *rs = get_remote_state (); |
0876f84a DJ |
10747 | LONGEST i, n, packet_len; |
10748 | ||
7cc244de | 10749 | if (packet_config_support (packet) == PACKET_DISABLE) |
2ed4b548 | 10750 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10751 | |
10752 | /* Check whether we've cached an end-of-object packet that matches | |
10753 | this request. */ | |
8e88304f | 10754 | if (rs->finished_object) |
0876f84a | 10755 | { |
8e88304f TT |
10756 | if (strcmp (object_name, rs->finished_object) == 0 |
10757 | && strcmp (annex ? annex : "", rs->finished_annex) == 0 | |
10758 | && offset == rs->finished_offset) | |
9b409511 YQ |
10759 | return TARGET_XFER_EOF; |
10760 | ||
0876f84a DJ |
10761 | |
10762 | /* Otherwise, we're now reading something different. Discard | |
10763 | the cache. */ | |
8e88304f TT |
10764 | xfree (rs->finished_object); |
10765 | xfree (rs->finished_annex); | |
10766 | rs->finished_object = NULL; | |
10767 | rs->finished_annex = NULL; | |
0876f84a DJ |
10768 | } |
10769 | ||
10770 | /* Request only enough to fit in a single packet. The actual data | |
10771 | may not, since we don't know how much of it will need to be escaped; | |
10772 | the target is free to respond with slightly less data. We subtract | |
10773 | five to account for the response type and the protocol frame. */ | |
768adc05 | 10774 | n = std::min<LONGEST> (get_remote_packet_size () - 5, len); |
8d64371b TT |
10775 | snprintf (rs->buf.data (), get_remote_packet_size () - 4, |
10776 | "qXfer:%s:read:%s:%s,%s", | |
0876f84a DJ |
10777 | object_name, annex ? annex : "", |
10778 | phex_nz (offset, sizeof offset), | |
10779 | phex_nz (n, sizeof n)); | |
10780 | i = putpkt (rs->buf); | |
10781 | if (i < 0) | |
2ed4b548 | 10782 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10783 | |
10784 | rs->buf[0] = '\0'; | |
8d64371b | 10785 | packet_len = getpkt_sane (&rs->buf, 0); |
0876f84a | 10786 | if (packet_len < 0 || packet_ok (rs->buf, packet) != PACKET_OK) |
2ed4b548 | 10787 | return TARGET_XFER_E_IO; |
0876f84a DJ |
10788 | |
10789 | if (rs->buf[0] != 'l' && rs->buf[0] != 'm') | |
8d64371b | 10790 | error (_("Unknown remote qXfer reply: %s"), rs->buf.data ()); |
0876f84a DJ |
10791 | |
10792 | /* 'm' means there is (or at least might be) more data after this | |
10793 | batch. That does not make sense unless there's at least one byte | |
10794 | of data in this reply. */ | |
10795 | if (rs->buf[0] == 'm' && packet_len == 1) | |
10796 | error (_("Remote qXfer reply contained no data.")); | |
10797 | ||
10798 | /* Got some data. */ | |
8d64371b | 10799 | i = remote_unescape_input ((gdb_byte *) rs->buf.data () + 1, |
bc20a4af | 10800 | packet_len - 1, readbuf, n); |
0876f84a DJ |
10801 | |
10802 | /* 'l' is an EOF marker, possibly including a final block of data, | |
0e7f50da UW |
10803 | or possibly empty. If we have the final block of a non-empty |
10804 | object, record this fact to bypass a subsequent partial read. */ | |
10805 | if (rs->buf[0] == 'l' && offset + i > 0) | |
0876f84a | 10806 | { |
8e88304f TT |
10807 | rs->finished_object = xstrdup (object_name); |
10808 | rs->finished_annex = xstrdup (annex ? annex : ""); | |
10809 | rs->finished_offset = offset + i; | |
0876f84a DJ |
10810 | } |
10811 | ||
9b409511 YQ |
10812 | if (i == 0) |
10813 | return TARGET_XFER_EOF; | |
10814 | else | |
10815 | { | |
10816 | *xfered_len = i; | |
10817 | return TARGET_XFER_OK; | |
10818 | } | |
0876f84a DJ |
10819 | } |
10820 | ||
f6ac5f3d PA |
10821 | enum target_xfer_status |
10822 | remote_target::xfer_partial (enum target_object object, | |
10823 | const char *annex, gdb_byte *readbuf, | |
10824 | const gdb_byte *writebuf, ULONGEST offset, ULONGEST len, | |
10825 | ULONGEST *xfered_len) | |
c906108c | 10826 | { |
82f73884 | 10827 | struct remote_state *rs; |
c906108c | 10828 | int i; |
6d820c5c | 10829 | char *p2; |
1e3ff5ad | 10830 | char query_type; |
124e13d9 | 10831 | int unit_size = gdbarch_addressable_memory_unit_size (target_gdbarch ()); |
c906108c | 10832 | |
e6e4e701 | 10833 | set_remote_traceframe (); |
82f73884 PA |
10834 | set_general_thread (inferior_ptid); |
10835 | ||
10836 | rs = get_remote_state (); | |
10837 | ||
b2182ed2 | 10838 | /* Handle memory using the standard memory routines. */ |
21e3b9b9 DJ |
10839 | if (object == TARGET_OBJECT_MEMORY) |
10840 | { | |
2d717e4f DJ |
10841 | /* If the remote target is connected but not running, we should |
10842 | pass this request down to a lower stratum (e.g. the executable | |
10843 | file). */ | |
10844 | if (!target_has_execution) | |
9b409511 | 10845 | return TARGET_XFER_EOF; |
2d717e4f | 10846 | |
21e3b9b9 | 10847 | if (writebuf != NULL) |
124e13d9 SM |
10848 | return remote_write_bytes (offset, writebuf, len, unit_size, |
10849 | xfered_len); | |
21e3b9b9 | 10850 | else |
6b8edb51 | 10851 | return remote_read_bytes (offset, readbuf, len, unit_size, |
124e13d9 | 10852 | xfered_len); |
21e3b9b9 DJ |
10853 | } |
10854 | ||
4aa995e1 PA |
10855 | /* Handle extra signal info using qxfer packets. */ |
10856 | if (object == TARGET_OBJECT_SIGNAL_INFO) | |
10857 | { | |
10858 | if (readbuf) | |
f6ac5f3d | 10859 | return remote_read_qxfer ("siginfo", annex, readbuf, offset, len, |
9b409511 | 10860 | xfered_len, &remote_protocol_packets |
4aa995e1 PA |
10861 | [PACKET_qXfer_siginfo_read]); |
10862 | else | |
f6ac5f3d | 10863 | return remote_write_qxfer ("siginfo", annex, |
9b409511 | 10864 | writebuf, offset, len, xfered_len, |
4aa995e1 PA |
10865 | &remote_protocol_packets |
10866 | [PACKET_qXfer_siginfo_write]); | |
10867 | } | |
10868 | ||
0fb4aa4b PA |
10869 | if (object == TARGET_OBJECT_STATIC_TRACE_DATA) |
10870 | { | |
10871 | if (readbuf) | |
f6ac5f3d | 10872 | return remote_read_qxfer ("statictrace", annex, |
9b409511 | 10873 | readbuf, offset, len, xfered_len, |
0fb4aa4b PA |
10874 | &remote_protocol_packets |
10875 | [PACKET_qXfer_statictrace_read]); | |
10876 | else | |
2ed4b548 | 10877 | return TARGET_XFER_E_IO; |
0fb4aa4b PA |
10878 | } |
10879 | ||
a76d924d DJ |
10880 | /* Only handle flash writes. */ |
10881 | if (writebuf != NULL) | |
10882 | { | |
a76d924d DJ |
10883 | switch (object) |
10884 | { | |
10885 | case TARGET_OBJECT_FLASH: | |
6b8edb51 | 10886 | return remote_flash_write (offset, len, xfered_len, |
9b409511 | 10887 | writebuf); |
a76d924d DJ |
10888 | |
10889 | default: | |
2ed4b548 | 10890 | return TARGET_XFER_E_IO; |
a76d924d DJ |
10891 | } |
10892 | } | |
4b8a223f | 10893 | |
1e3ff5ad AC |
10894 | /* Map pre-existing objects onto letters. DO NOT do this for new |
10895 | objects!!! Instead specify new query packets. */ | |
10896 | switch (object) | |
c906108c | 10897 | { |
1e3ff5ad AC |
10898 | case TARGET_OBJECT_AVR: |
10899 | query_type = 'R'; | |
10900 | break; | |
802188a7 RM |
10901 | |
10902 | case TARGET_OBJECT_AUXV: | |
0876f84a | 10903 | gdb_assert (annex == NULL); |
f6ac5f3d | 10904 | return remote_read_qxfer ("auxv", annex, readbuf, offset, len, |
9b409511 | 10905 | xfered_len, |
0876f84a | 10906 | &remote_protocol_packets[PACKET_qXfer_auxv]); |
802188a7 | 10907 | |
23181151 DJ |
10908 | case TARGET_OBJECT_AVAILABLE_FEATURES: |
10909 | return remote_read_qxfer | |
f6ac5f3d | 10910 | ("features", annex, readbuf, offset, len, xfered_len, |
23181151 DJ |
10911 | &remote_protocol_packets[PACKET_qXfer_features]); |
10912 | ||
cfa9d6d9 DJ |
10913 | case TARGET_OBJECT_LIBRARIES: |
10914 | return remote_read_qxfer | |
f6ac5f3d | 10915 | ("libraries", annex, readbuf, offset, len, xfered_len, |
cfa9d6d9 DJ |
10916 | &remote_protocol_packets[PACKET_qXfer_libraries]); |
10917 | ||
2268b414 JK |
10918 | case TARGET_OBJECT_LIBRARIES_SVR4: |
10919 | return remote_read_qxfer | |
f6ac5f3d | 10920 | ("libraries-svr4", annex, readbuf, offset, len, xfered_len, |
2268b414 JK |
10921 | &remote_protocol_packets[PACKET_qXfer_libraries_svr4]); |
10922 | ||
fd79ecee DJ |
10923 | case TARGET_OBJECT_MEMORY_MAP: |
10924 | gdb_assert (annex == NULL); | |
f6ac5f3d | 10925 | return remote_read_qxfer ("memory-map", annex, readbuf, offset, len, |
9b409511 | 10926 | xfered_len, |
fd79ecee DJ |
10927 | &remote_protocol_packets[PACKET_qXfer_memory_map]); |
10928 | ||
07e059b5 VP |
10929 | case TARGET_OBJECT_OSDATA: |
10930 | /* Should only get here if we're connected. */ | |
5d93a237 | 10931 | gdb_assert (rs->remote_desc); |
07e059b5 | 10932 | return remote_read_qxfer |
f6ac5f3d | 10933 | ("osdata", annex, readbuf, offset, len, xfered_len, |
07e059b5 VP |
10934 | &remote_protocol_packets[PACKET_qXfer_osdata]); |
10935 | ||
dc146f7c VP |
10936 | case TARGET_OBJECT_THREADS: |
10937 | gdb_assert (annex == NULL); | |
f6ac5f3d | 10938 | return remote_read_qxfer ("threads", annex, readbuf, offset, len, |
9b409511 | 10939 | xfered_len, |
dc146f7c VP |
10940 | &remote_protocol_packets[PACKET_qXfer_threads]); |
10941 | ||
b3b9301e PA |
10942 | case TARGET_OBJECT_TRACEFRAME_INFO: |
10943 | gdb_assert (annex == NULL); | |
10944 | return remote_read_qxfer | |
f6ac5f3d | 10945 | ("traceframe-info", annex, readbuf, offset, len, xfered_len, |
b3b9301e | 10946 | &remote_protocol_packets[PACKET_qXfer_traceframe_info]); |
78d85199 YQ |
10947 | |
10948 | case TARGET_OBJECT_FDPIC: | |
f6ac5f3d | 10949 | return remote_read_qxfer ("fdpic", annex, readbuf, offset, len, |
9b409511 | 10950 | xfered_len, |
78d85199 | 10951 | &remote_protocol_packets[PACKET_qXfer_fdpic]); |
169081d0 TG |
10952 | |
10953 | case TARGET_OBJECT_OPENVMS_UIB: | |
f6ac5f3d | 10954 | return remote_read_qxfer ("uib", annex, readbuf, offset, len, |
9b409511 | 10955 | xfered_len, |
169081d0 TG |
10956 | &remote_protocol_packets[PACKET_qXfer_uib]); |
10957 | ||
9accd112 | 10958 | case TARGET_OBJECT_BTRACE: |
f6ac5f3d | 10959 | return remote_read_qxfer ("btrace", annex, readbuf, offset, len, |
9b409511 | 10960 | xfered_len, |
9accd112 MM |
10961 | &remote_protocol_packets[PACKET_qXfer_btrace]); |
10962 | ||
f4abbc16 | 10963 | case TARGET_OBJECT_BTRACE_CONF: |
f6ac5f3d | 10964 | return remote_read_qxfer ("btrace-conf", annex, readbuf, offset, |
f4abbc16 MM |
10965 | len, xfered_len, |
10966 | &remote_protocol_packets[PACKET_qXfer_btrace_conf]); | |
10967 | ||
c78fa86a | 10968 | case TARGET_OBJECT_EXEC_FILE: |
f6ac5f3d | 10969 | return remote_read_qxfer ("exec-file", annex, readbuf, offset, |
c78fa86a GB |
10970 | len, xfered_len, |
10971 | &remote_protocol_packets[PACKET_qXfer_exec_file]); | |
10972 | ||
1e3ff5ad | 10973 | default: |
2ed4b548 | 10974 | return TARGET_XFER_E_IO; |
c906108c SS |
10975 | } |
10976 | ||
0df8b418 | 10977 | /* Minimum outbuf size is get_remote_packet_size (). If LEN is not |
24b06219 | 10978 | large enough let the caller deal with it. */ |
ea9c271d | 10979 | if (len < get_remote_packet_size ()) |
2ed4b548 | 10980 | return TARGET_XFER_E_IO; |
ea9c271d | 10981 | len = get_remote_packet_size (); |
1e3ff5ad | 10982 | |
23860348 | 10983 | /* Except for querying the minimum buffer size, target must be open. */ |
5d93a237 | 10984 | if (!rs->remote_desc) |
8a3fe4f8 | 10985 | error (_("remote query is only available after target open")); |
c906108c | 10986 | |
1e3ff5ad | 10987 | gdb_assert (annex != NULL); |
4b8a223f | 10988 | gdb_assert (readbuf != NULL); |
c906108c | 10989 | |
8d64371b | 10990 | p2 = rs->buf.data (); |
c906108c SS |
10991 | *p2++ = 'q'; |
10992 | *p2++ = query_type; | |
10993 | ||
23860348 MS |
10994 | /* We used one buffer char for the remote protocol q command and |
10995 | another for the query type. As the remote protocol encapsulation | |
10996 | uses 4 chars plus one extra in case we are debugging | |
10997 | (remote_debug), we have PBUFZIZ - 7 left to pack the query | |
10998 | string. */ | |
c906108c | 10999 | i = 0; |
ea9c271d | 11000 | while (annex[i] && (i < (get_remote_packet_size () - 8))) |
c906108c | 11001 | { |
1e3ff5ad AC |
11002 | /* Bad caller may have sent forbidden characters. */ |
11003 | gdb_assert (isprint (annex[i]) && annex[i] != '$' && annex[i] != '#'); | |
11004 | *p2++ = annex[i]; | |
c906108c SS |
11005 | i++; |
11006 | } | |
1e3ff5ad AC |
11007 | *p2 = '\0'; |
11008 | gdb_assert (annex[i] == '\0'); | |
c906108c | 11009 | |
6d820c5c | 11010 | i = putpkt (rs->buf); |
c5aa993b | 11011 | if (i < 0) |
2ed4b548 | 11012 | return TARGET_XFER_E_IO; |
c906108c | 11013 | |
8d64371b TT |
11014 | getpkt (&rs->buf, 0); |
11015 | strcpy ((char *) readbuf, rs->buf.data ()); | |
c906108c | 11016 | |
9b409511 | 11017 | *xfered_len = strlen ((char *) readbuf); |
92ffd475 | 11018 | return (*xfered_len != 0) ? TARGET_XFER_OK : TARGET_XFER_EOF; |
c906108c SS |
11019 | } |
11020 | ||
09c98b44 DB |
11021 | /* Implementation of to_get_memory_xfer_limit. */ |
11022 | ||
f6ac5f3d PA |
11023 | ULONGEST |
11024 | remote_target::get_memory_xfer_limit () | |
09c98b44 DB |
11025 | { |
11026 | return get_memory_write_packet_size (); | |
11027 | } | |
11028 | ||
f6ac5f3d PA |
11029 | int |
11030 | remote_target::search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, | |
11031 | const gdb_byte *pattern, ULONGEST pattern_len, | |
11032 | CORE_ADDR *found_addrp) | |
08388c79 | 11033 | { |
f5656ead | 11034 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
08388c79 DE |
11035 | struct remote_state *rs = get_remote_state (); |
11036 | int max_size = get_memory_write_packet_size (); | |
11037 | struct packet_config *packet = | |
11038 | &remote_protocol_packets[PACKET_qSearch_memory]; | |
0df8b418 MS |
11039 | /* Number of packet bytes used to encode the pattern; |
11040 | this could be more than PATTERN_LEN due to escape characters. */ | |
08388c79 | 11041 | int escaped_pattern_len; |
0df8b418 | 11042 | /* Amount of pattern that was encodable in the packet. */ |
08388c79 DE |
11043 | int used_pattern_len; |
11044 | int i; | |
11045 | int found; | |
11046 | ULONGEST found_addr; | |
11047 | ||
7cc244de PA |
11048 | /* Don't go to the target if we don't have to. This is done before |
11049 | checking packet_config_support to avoid the possibility that a | |
11050 | success for this edge case means the facility works in | |
11051 | general. */ | |
08388c79 DE |
11052 | if (pattern_len > search_space_len) |
11053 | return 0; | |
11054 | if (pattern_len == 0) | |
11055 | { | |
11056 | *found_addrp = start_addr; | |
11057 | return 1; | |
11058 | } | |
11059 | ||
11060 | /* If we already know the packet isn't supported, fall back to the simple | |
11061 | way of searching memory. */ | |
11062 | ||
4082afcc | 11063 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 DE |
11064 | { |
11065 | /* Target doesn't provided special support, fall back and use the | |
11066 | standard support (copy memory and do the search here). */ | |
f6ac5f3d | 11067 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
11068 | pattern, pattern_len, found_addrp); |
11069 | } | |
11070 | ||
28439a30 PA |
11071 | /* Make sure the remote is pointing at the right process. */ |
11072 | set_general_process (); | |
11073 | ||
08388c79 | 11074 | /* Insert header. */ |
8d64371b | 11075 | i = snprintf (rs->buf.data (), max_size, |
08388c79 | 11076 | "qSearch:memory:%s;%s;", |
5af949e3 | 11077 | phex_nz (start_addr, addr_size), |
08388c79 DE |
11078 | phex_nz (search_space_len, sizeof (search_space_len))); |
11079 | max_size -= (i + 1); | |
11080 | ||
11081 | /* Escape as much data as fits into rs->buf. */ | |
11082 | escaped_pattern_len = | |
8d64371b TT |
11083 | remote_escape_output (pattern, pattern_len, 1, |
11084 | (gdb_byte *) rs->buf.data () + i, | |
08388c79 DE |
11085 | &used_pattern_len, max_size); |
11086 | ||
11087 | /* Bail if the pattern is too large. */ | |
11088 | if (used_pattern_len != pattern_len) | |
9b20d036 | 11089 | error (_("Pattern is too large to transmit to remote target.")); |
08388c79 | 11090 | |
8d64371b TT |
11091 | if (putpkt_binary (rs->buf.data (), i + escaped_pattern_len) < 0 |
11092 | || getpkt_sane (&rs->buf, 0) < 0 | |
08388c79 DE |
11093 | || packet_ok (rs->buf, packet) != PACKET_OK) |
11094 | { | |
11095 | /* The request may not have worked because the command is not | |
11096 | supported. If so, fall back to the simple way. */ | |
7cc244de | 11097 | if (packet_config_support (packet) == PACKET_DISABLE) |
08388c79 | 11098 | { |
f6ac5f3d | 11099 | return simple_search_memory (this, start_addr, search_space_len, |
08388c79 DE |
11100 | pattern, pattern_len, found_addrp); |
11101 | } | |
11102 | return -1; | |
11103 | } | |
11104 | ||
11105 | if (rs->buf[0] == '0') | |
11106 | found = 0; | |
11107 | else if (rs->buf[0] == '1') | |
11108 | { | |
11109 | found = 1; | |
11110 | if (rs->buf[1] != ',') | |
8d64371b TT |
11111 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
11112 | unpack_varlen_hex (&rs->buf[2], &found_addr); | |
08388c79 DE |
11113 | *found_addrp = found_addr; |
11114 | } | |
11115 | else | |
8d64371b | 11116 | error (_("Unknown qSearch:memory reply: %s"), rs->buf.data ()); |
08388c79 DE |
11117 | |
11118 | return found; | |
11119 | } | |
11120 | ||
f6ac5f3d PA |
11121 | void |
11122 | remote_target::rcmd (const char *command, struct ui_file *outbuf) | |
96baa820 | 11123 | { |
d01949b6 | 11124 | struct remote_state *rs = get_remote_state (); |
8d64371b | 11125 | char *p = rs->buf.data (); |
96baa820 | 11126 | |
5d93a237 | 11127 | if (!rs->remote_desc) |
8a3fe4f8 | 11128 | error (_("remote rcmd is only available after target open")); |
96baa820 | 11129 | |
23860348 | 11130 | /* Send a NULL command across as an empty command. */ |
7be570e7 JM |
11131 | if (command == NULL) |
11132 | command = ""; | |
11133 | ||
23860348 | 11134 | /* The query prefix. */ |
8d64371b TT |
11135 | strcpy (rs->buf.data (), "qRcmd,"); |
11136 | p = strchr (rs->buf.data (), '\0'); | |
96baa820 | 11137 | |
8d64371b | 11138 | if ((strlen (rs->buf.data ()) + strlen (command) * 2 + 8/*misc*/) |
3e43a32a | 11139 | > get_remote_packet_size ()) |
8a3fe4f8 | 11140 | error (_("\"monitor\" command ``%s'' is too long."), command); |
96baa820 | 11141 | |
23860348 | 11142 | /* Encode the actual command. */ |
a30bf1f1 | 11143 | bin2hex ((const gdb_byte *) command, p, strlen (command)); |
96baa820 | 11144 | |
6d820c5c | 11145 | if (putpkt (rs->buf) < 0) |
8a3fe4f8 | 11146 | error (_("Communication problem with target.")); |
96baa820 JM |
11147 | |
11148 | /* get/display the response */ | |
11149 | while (1) | |
11150 | { | |
2e9f7625 DJ |
11151 | char *buf; |
11152 | ||
00bf0b85 | 11153 | /* XXX - see also remote_get_noisy_reply(). */ |
5b37825d | 11154 | QUIT; /* Allow user to bail out with ^C. */ |
2e9f7625 | 11155 | rs->buf[0] = '\0'; |
8d64371b | 11156 | if (getpkt_sane (&rs->buf, 0) == -1) |
5b37825d PW |
11157 | { |
11158 | /* Timeout. Continue to (try to) read responses. | |
11159 | This is better than stopping with an error, assuming the stub | |
11160 | is still executing the (long) monitor command. | |
11161 | If needed, the user can interrupt gdb using C-c, obtaining | |
11162 | an effect similar to stop on timeout. */ | |
11163 | continue; | |
11164 | } | |
8d64371b | 11165 | buf = rs->buf.data (); |
96baa820 | 11166 | if (buf[0] == '\0') |
8a3fe4f8 | 11167 | error (_("Target does not support this command.")); |
96baa820 JM |
11168 | if (buf[0] == 'O' && buf[1] != 'K') |
11169 | { | |
23860348 | 11170 | remote_console_output (buf + 1); /* 'O' message from stub. */ |
96baa820 JM |
11171 | continue; |
11172 | } | |
11173 | if (strcmp (buf, "OK") == 0) | |
11174 | break; | |
7be570e7 JM |
11175 | if (strlen (buf) == 3 && buf[0] == 'E' |
11176 | && isdigit (buf[1]) && isdigit (buf[2])) | |
11177 | { | |
8a3fe4f8 | 11178 | error (_("Protocol error with Rcmd")); |
7be570e7 | 11179 | } |
96baa820 JM |
11180 | for (p = buf; p[0] != '\0' && p[1] != '\0'; p += 2) |
11181 | { | |
11182 | char c = (fromhex (p[0]) << 4) + fromhex (p[1]); | |
a744cf53 | 11183 | |
96baa820 JM |
11184 | fputc_unfiltered (c, outbuf); |
11185 | } | |
11186 | break; | |
11187 | } | |
11188 | } | |
11189 | ||
f6ac5f3d PA |
11190 | std::vector<mem_region> |
11191 | remote_target::memory_map () | |
fd79ecee | 11192 | { |
a664f67e | 11193 | std::vector<mem_region> result; |
9018be22 | 11194 | gdb::optional<gdb::char_vector> text |
8b88a78e | 11195 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_MEMORY_MAP, NULL); |
fd79ecee DJ |
11196 | |
11197 | if (text) | |
9018be22 | 11198 | result = parse_memory_map (text->data ()); |
fd79ecee DJ |
11199 | |
11200 | return result; | |
11201 | } | |
11202 | ||
c906108c | 11203 | static void |
ac88e2de | 11204 | packet_command (const char *args, int from_tty) |
c906108c | 11205 | { |
6b8edb51 | 11206 | remote_target *remote = get_current_remote_target (); |
c906108c | 11207 | |
6b8edb51 | 11208 | if (remote == nullptr) |
8a3fe4f8 | 11209 | error (_("command can only be used with remote target")); |
c906108c | 11210 | |
6b8edb51 PA |
11211 | remote->packet_command (args, from_tty); |
11212 | } | |
11213 | ||
11214 | void | |
11215 | remote_target::packet_command (const char *args, int from_tty) | |
11216 | { | |
c5aa993b | 11217 | if (!args) |
8a3fe4f8 | 11218 | error (_("remote-packet command requires packet text as argument")); |
c906108c SS |
11219 | |
11220 | puts_filtered ("sending: "); | |
11221 | print_packet (args); | |
11222 | puts_filtered ("\n"); | |
11223 | putpkt (args); | |
11224 | ||
6b8edb51 PA |
11225 | remote_state *rs = get_remote_state (); |
11226 | ||
8d64371b | 11227 | getpkt (&rs->buf, 0); |
c906108c | 11228 | puts_filtered ("received: "); |
8d64371b | 11229 | print_packet (rs->buf.data ()); |
c906108c SS |
11230 | puts_filtered ("\n"); |
11231 | } | |
11232 | ||
11233 | #if 0 | |
23860348 | 11234 | /* --------- UNIT_TEST for THREAD oriented PACKETS ------------------- */ |
c906108c | 11235 | |
a14ed312 | 11236 | static void display_thread_info (struct gdb_ext_thread_info *info); |
c906108c | 11237 | |
a14ed312 | 11238 | static void threadset_test_cmd (char *cmd, int tty); |
c906108c | 11239 | |
a14ed312 | 11240 | static void threadalive_test (char *cmd, int tty); |
c906108c | 11241 | |
a14ed312 | 11242 | static void threadlist_test_cmd (char *cmd, int tty); |
c906108c | 11243 | |
23860348 | 11244 | int get_and_display_threadinfo (threadref *ref); |
c906108c | 11245 | |
a14ed312 | 11246 | static void threadinfo_test_cmd (char *cmd, int tty); |
c906108c | 11247 | |
23860348 | 11248 | static int thread_display_step (threadref *ref, void *context); |
c906108c | 11249 | |
a14ed312 | 11250 | static void threadlist_update_test_cmd (char *cmd, int tty); |
c906108c | 11251 | |
a14ed312 | 11252 | static void init_remote_threadtests (void); |
c906108c | 11253 | |
23860348 | 11254 | #define SAMPLE_THREAD 0x05060708 /* Truncated 64 bit threadid. */ |
c906108c SS |
11255 | |
11256 | static void | |
0b39b52e | 11257 | threadset_test_cmd (const char *cmd, int tty) |
c906108c SS |
11258 | { |
11259 | int sample_thread = SAMPLE_THREAD; | |
11260 | ||
a3f17187 | 11261 | printf_filtered (_("Remote threadset test\n")); |
79d7f229 | 11262 | set_general_thread (sample_thread); |
c906108c SS |
11263 | } |
11264 | ||
11265 | ||
11266 | static void | |
0b39b52e | 11267 | threadalive_test (const char *cmd, int tty) |
c906108c SS |
11268 | { |
11269 | int sample_thread = SAMPLE_THREAD; | |
e99b03dc | 11270 | int pid = inferior_ptid.pid (); |
fd79271b | 11271 | ptid_t ptid = ptid_t (pid, sample_thread, 0); |
c906108c | 11272 | |
79d7f229 | 11273 | if (remote_thread_alive (ptid)) |
c906108c SS |
11274 | printf_filtered ("PASS: Thread alive test\n"); |
11275 | else | |
11276 | printf_filtered ("FAIL: Thread alive test\n"); | |
11277 | } | |
11278 | ||
23860348 | 11279 | void output_threadid (char *title, threadref *ref); |
c906108c SS |
11280 | |
11281 | void | |
fba45db2 | 11282 | output_threadid (char *title, threadref *ref) |
c906108c SS |
11283 | { |
11284 | char hexid[20]; | |
11285 | ||
23860348 | 11286 | pack_threadid (&hexid[0], ref); /* Convert threead id into hex. */ |
c906108c SS |
11287 | hexid[16] = 0; |
11288 | printf_filtered ("%s %s\n", title, (&hexid[0])); | |
11289 | } | |
11290 | ||
11291 | static void | |
0b39b52e | 11292 | threadlist_test_cmd (const char *cmd, int tty) |
c906108c SS |
11293 | { |
11294 | int startflag = 1; | |
11295 | threadref nextthread; | |
11296 | int done, result_count; | |
11297 | threadref threadlist[3]; | |
11298 | ||
11299 | printf_filtered ("Remote Threadlist test\n"); | |
11300 | if (!remote_get_threadlist (startflag, &nextthread, 3, &done, | |
11301 | &result_count, &threadlist[0])) | |
11302 | printf_filtered ("FAIL: threadlist test\n"); | |
11303 | else | |
11304 | { | |
11305 | threadref *scan = threadlist; | |
11306 | threadref *limit = scan + result_count; | |
11307 | ||
11308 | while (scan < limit) | |
11309 | output_threadid (" thread ", scan++); | |
11310 | } | |
11311 | } | |
11312 | ||
11313 | void | |
fba45db2 | 11314 | display_thread_info (struct gdb_ext_thread_info *info) |
c906108c SS |
11315 | { |
11316 | output_threadid ("Threadid: ", &info->threadid); | |
11317 | printf_filtered ("Name: %s\n ", info->shortname); | |
11318 | printf_filtered ("State: %s\n", info->display); | |
11319 | printf_filtered ("other: %s\n\n", info->more_display); | |
11320 | } | |
11321 | ||
11322 | int | |
fba45db2 | 11323 | get_and_display_threadinfo (threadref *ref) |
c906108c SS |
11324 | { |
11325 | int result; | |
11326 | int set; | |
11327 | struct gdb_ext_thread_info threadinfo; | |
11328 | ||
11329 | set = TAG_THREADID | TAG_EXISTS | TAG_THREADNAME | |
11330 | | TAG_MOREDISPLAY | TAG_DISPLAY; | |
11331 | if (0 != (result = remote_get_threadinfo (ref, set, &threadinfo))) | |
11332 | display_thread_info (&threadinfo); | |
11333 | return result; | |
11334 | } | |
11335 | ||
11336 | static void | |
0b39b52e | 11337 | threadinfo_test_cmd (const char *cmd, int tty) |
c906108c SS |
11338 | { |
11339 | int athread = SAMPLE_THREAD; | |
11340 | threadref thread; | |
11341 | int set; | |
11342 | ||
11343 | int_to_threadref (&thread, athread); | |
11344 | printf_filtered ("Remote Threadinfo test\n"); | |
11345 | if (!get_and_display_threadinfo (&thread)) | |
11346 | printf_filtered ("FAIL cannot get thread info\n"); | |
11347 | } | |
11348 | ||
11349 | static int | |
fba45db2 | 11350 | thread_display_step (threadref *ref, void *context) |
c906108c SS |
11351 | { |
11352 | /* output_threadid(" threadstep ",ref); *//* simple test */ | |
11353 | return get_and_display_threadinfo (ref); | |
11354 | } | |
11355 | ||
11356 | static void | |
0b39b52e | 11357 | threadlist_update_test_cmd (const char *cmd, int tty) |
c906108c SS |
11358 | { |
11359 | printf_filtered ("Remote Threadlist update test\n"); | |
11360 | remote_threadlist_iterator (thread_display_step, 0, CRAZY_MAX_THREADS); | |
11361 | } | |
11362 | ||
11363 | static void | |
11364 | init_remote_threadtests (void) | |
11365 | { | |
3e43a32a MS |
11366 | add_com ("tlist", class_obscure, threadlist_test_cmd, |
11367 | _("Fetch and print the remote list of " | |
590042fc | 11368 | "thread identifiers, one pkt only.")); |
c906108c | 11369 | add_com ("tinfo", class_obscure, threadinfo_test_cmd, |
590042fc | 11370 | _("Fetch and display info about one thread.")); |
c906108c | 11371 | add_com ("tset", class_obscure, threadset_test_cmd, |
590042fc | 11372 | _("Test setting to a different thread.")); |
c906108c | 11373 | add_com ("tupd", class_obscure, threadlist_update_test_cmd, |
590042fc | 11374 | _("Iterate through updating all remote thread info.")); |
c906108c | 11375 | add_com ("talive", class_obscure, threadalive_test, |
590042fc | 11376 | _("Remote thread alive test.")); |
c906108c SS |
11377 | } |
11378 | ||
11379 | #endif /* 0 */ | |
11380 | ||
a068643d | 11381 | /* Convert a thread ID to a string. */ |
f3fb8c85 | 11382 | |
a068643d | 11383 | std::string |
f6ac5f3d | 11384 | remote_target::pid_to_str (ptid_t ptid) |
f3fb8c85 | 11385 | { |
82f73884 | 11386 | struct remote_state *rs = get_remote_state (); |
f3fb8c85 | 11387 | |
d7e15655 | 11388 | if (ptid == null_ptid) |
7cee1e54 | 11389 | return normal_pid_to_str (ptid); |
0e998d96 | 11390 | else if (ptid.is_pid ()) |
ecd0ada5 PA |
11391 | { |
11392 | /* Printing an inferior target id. */ | |
11393 | ||
11394 | /* When multi-process extensions are off, there's no way in the | |
11395 | remote protocol to know the remote process id, if there's any | |
11396 | at all. There's one exception --- when we're connected with | |
11397 | target extended-remote, and we manually attached to a process | |
11398 | with "attach PID". We don't record anywhere a flag that | |
11399 | allows us to distinguish that case from the case of | |
11400 | connecting with extended-remote and the stub already being | |
11401 | attached to a process, and reporting yes to qAttached, hence | |
11402 | no smart special casing here. */ | |
11403 | if (!remote_multi_process_p (rs)) | |
a068643d | 11404 | return "Remote target"; |
ecd0ada5 PA |
11405 | |
11406 | return normal_pid_to_str (ptid); | |
82f73884 | 11407 | } |
ecd0ada5 | 11408 | else |
79d7f229 | 11409 | { |
d7e15655 | 11410 | if (magic_null_ptid == ptid) |
a068643d | 11411 | return "Thread <main>"; |
8020350c | 11412 | else if (remote_multi_process_p (rs)) |
e38504b3 | 11413 | if (ptid.lwp () == 0) |
de0d863e DB |
11414 | return normal_pid_to_str (ptid); |
11415 | else | |
a068643d TT |
11416 | return string_printf ("Thread %d.%ld", |
11417 | ptid.pid (), ptid.lwp ()); | |
ecd0ada5 | 11418 | else |
a068643d | 11419 | return string_printf ("Thread %ld", ptid.lwp ()); |
79d7f229 | 11420 | } |
f3fb8c85 MS |
11421 | } |
11422 | ||
38691318 KB |
11423 | /* Get the address of the thread local variable in OBJFILE which is |
11424 | stored at OFFSET within the thread local storage for thread PTID. */ | |
11425 | ||
f6ac5f3d PA |
11426 | CORE_ADDR |
11427 | remote_target::get_thread_local_address (ptid_t ptid, CORE_ADDR lm, | |
11428 | CORE_ADDR offset) | |
38691318 | 11429 | { |
4082afcc | 11430 | if (packet_support (PACKET_qGetTLSAddr) != PACKET_DISABLE) |
38691318 KB |
11431 | { |
11432 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11433 | char *p = rs->buf.data (); |
11434 | char *endp = p + get_remote_packet_size (); | |
571dd617 | 11435 | enum packet_result result; |
38691318 KB |
11436 | |
11437 | strcpy (p, "qGetTLSAddr:"); | |
11438 | p += strlen (p); | |
82f73884 | 11439 | p = write_ptid (p, endp, ptid); |
38691318 KB |
11440 | *p++ = ','; |
11441 | p += hexnumstr (p, offset); | |
11442 | *p++ = ','; | |
11443 | p += hexnumstr (p, lm); | |
11444 | *p++ = '\0'; | |
11445 | ||
6d820c5c | 11446 | putpkt (rs->buf); |
8d64371b | 11447 | getpkt (&rs->buf, 0); |
3e43a32a MS |
11448 | result = packet_ok (rs->buf, |
11449 | &remote_protocol_packets[PACKET_qGetTLSAddr]); | |
571dd617 | 11450 | if (result == PACKET_OK) |
38691318 | 11451 | { |
b926417a | 11452 | ULONGEST addr; |
38691318 | 11453 | |
8d64371b | 11454 | unpack_varlen_hex (rs->buf.data (), &addr); |
b926417a | 11455 | return addr; |
38691318 | 11456 | } |
571dd617 | 11457 | else if (result == PACKET_UNKNOWN) |
109c3e39 AC |
11458 | throw_error (TLS_GENERIC_ERROR, |
11459 | _("Remote target doesn't support qGetTLSAddr packet")); | |
38691318 | 11460 | else |
109c3e39 AC |
11461 | throw_error (TLS_GENERIC_ERROR, |
11462 | _("Remote target failed to process qGetTLSAddr request")); | |
38691318 KB |
11463 | } |
11464 | else | |
109c3e39 AC |
11465 | throw_error (TLS_GENERIC_ERROR, |
11466 | _("TLS not supported or disabled on this target")); | |
38691318 KB |
11467 | /* Not reached. */ |
11468 | return 0; | |
11469 | } | |
11470 | ||
711e434b PM |
11471 | /* Provide thread local base, i.e. Thread Information Block address. |
11472 | Returns 1 if ptid is found and thread_local_base is non zero. */ | |
11473 | ||
57810aa7 | 11474 | bool |
f6ac5f3d | 11475 | remote_target::get_tib_address (ptid_t ptid, CORE_ADDR *addr) |
711e434b | 11476 | { |
4082afcc | 11477 | if (packet_support (PACKET_qGetTIBAddr) != PACKET_DISABLE) |
711e434b PM |
11478 | { |
11479 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
11480 | char *p = rs->buf.data (); |
11481 | char *endp = p + get_remote_packet_size (); | |
711e434b PM |
11482 | enum packet_result result; |
11483 | ||
11484 | strcpy (p, "qGetTIBAddr:"); | |
11485 | p += strlen (p); | |
11486 | p = write_ptid (p, endp, ptid); | |
11487 | *p++ = '\0'; | |
11488 | ||
11489 | putpkt (rs->buf); | |
8d64371b | 11490 | getpkt (&rs->buf, 0); |
711e434b PM |
11491 | result = packet_ok (rs->buf, |
11492 | &remote_protocol_packets[PACKET_qGetTIBAddr]); | |
11493 | if (result == PACKET_OK) | |
11494 | { | |
b926417a | 11495 | ULONGEST val; |
8d64371b | 11496 | unpack_varlen_hex (rs->buf.data (), &val); |
711e434b | 11497 | if (addr) |
b926417a | 11498 | *addr = (CORE_ADDR) val; |
57810aa7 | 11499 | return true; |
711e434b PM |
11500 | } |
11501 | else if (result == PACKET_UNKNOWN) | |
11502 | error (_("Remote target doesn't support qGetTIBAddr packet")); | |
11503 | else | |
11504 | error (_("Remote target failed to process qGetTIBAddr request")); | |
11505 | } | |
11506 | else | |
11507 | error (_("qGetTIBAddr not supported or disabled on this target")); | |
11508 | /* Not reached. */ | |
57810aa7 | 11509 | return false; |
711e434b PM |
11510 | } |
11511 | ||
29709017 DJ |
11512 | /* Support for inferring a target description based on the current |
11513 | architecture and the size of a 'g' packet. While the 'g' packet | |
11514 | can have any size (since optional registers can be left off the | |
11515 | end), some sizes are easily recognizable given knowledge of the | |
11516 | approximate architecture. */ | |
11517 | ||
11518 | struct remote_g_packet_guess | |
11519 | { | |
eefce37f TT |
11520 | remote_g_packet_guess (int bytes_, const struct target_desc *tdesc_) |
11521 | : bytes (bytes_), | |
11522 | tdesc (tdesc_) | |
11523 | { | |
11524 | } | |
11525 | ||
29709017 DJ |
11526 | int bytes; |
11527 | const struct target_desc *tdesc; | |
11528 | }; | |
29709017 | 11529 | |
eefce37f | 11530 | struct remote_g_packet_data : public allocate_on_obstack |
29709017 | 11531 | { |
eefce37f | 11532 | std::vector<remote_g_packet_guess> guesses; |
29709017 DJ |
11533 | }; |
11534 | ||
11535 | static struct gdbarch_data *remote_g_packet_data_handle; | |
11536 | ||
11537 | static void * | |
11538 | remote_g_packet_data_init (struct obstack *obstack) | |
11539 | { | |
eefce37f | 11540 | return new (obstack) remote_g_packet_data; |
29709017 DJ |
11541 | } |
11542 | ||
11543 | void | |
11544 | register_remote_g_packet_guess (struct gdbarch *gdbarch, int bytes, | |
11545 | const struct target_desc *tdesc) | |
11546 | { | |
11547 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11548 | = ((struct remote_g_packet_data *) |
11549 | gdbarch_data (gdbarch, remote_g_packet_data_handle)); | |
29709017 DJ |
11550 | |
11551 | gdb_assert (tdesc != NULL); | |
11552 | ||
eefce37f TT |
11553 | for (const remote_g_packet_guess &guess : data->guesses) |
11554 | if (guess.bytes == bytes) | |
29709017 | 11555 | internal_error (__FILE__, __LINE__, |
9b20d036 | 11556 | _("Duplicate g packet description added for size %d"), |
29709017 DJ |
11557 | bytes); |
11558 | ||
eefce37f | 11559 | data->guesses.emplace_back (bytes, tdesc); |
29709017 DJ |
11560 | } |
11561 | ||
eefce37f TT |
11562 | /* Return true if remote_read_description would do anything on this target |
11563 | and architecture, false otherwise. */ | |
d962ef82 | 11564 | |
eefce37f | 11565 | static bool |
d962ef82 DJ |
11566 | remote_read_description_p (struct target_ops *target) |
11567 | { | |
11568 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11569 | = ((struct remote_g_packet_data *) |
11570 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
d962ef82 | 11571 | |
eefce37f | 11572 | return !data->guesses.empty (); |
d962ef82 DJ |
11573 | } |
11574 | ||
f6ac5f3d PA |
11575 | const struct target_desc * |
11576 | remote_target::read_description () | |
29709017 DJ |
11577 | { |
11578 | struct remote_g_packet_data *data | |
19ba03f4 SM |
11579 | = ((struct remote_g_packet_data *) |
11580 | gdbarch_data (target_gdbarch (), remote_g_packet_data_handle)); | |
29709017 | 11581 | |
d962ef82 DJ |
11582 | /* Do not try this during initial connection, when we do not know |
11583 | whether there is a running but stopped thread. */ | |
d7e15655 | 11584 | if (!target_has_execution || inferior_ptid == null_ptid) |
b6a8c27b | 11585 | return beneath ()->read_description (); |
d962ef82 | 11586 | |
eefce37f | 11587 | if (!data->guesses.empty ()) |
29709017 | 11588 | { |
29709017 DJ |
11589 | int bytes = send_g_packet (); |
11590 | ||
eefce37f TT |
11591 | for (const remote_g_packet_guess &guess : data->guesses) |
11592 | if (guess.bytes == bytes) | |
11593 | return guess.tdesc; | |
29709017 DJ |
11594 | |
11595 | /* We discard the g packet. A minor optimization would be to | |
11596 | hold on to it, and fill the register cache once we have selected | |
11597 | an architecture, but it's too tricky to do safely. */ | |
11598 | } | |
11599 | ||
b6a8c27b | 11600 | return beneath ()->read_description (); |
29709017 DJ |
11601 | } |
11602 | ||
a6b151f1 DJ |
11603 | /* Remote file transfer support. This is host-initiated I/O, not |
11604 | target-initiated; for target-initiated, see remote-fileio.c. */ | |
11605 | ||
11606 | /* If *LEFT is at least the length of STRING, copy STRING to | |
11607 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11608 | decrease *LEFT. Otherwise raise an error. */ | |
11609 | ||
11610 | static void | |
a121b7c1 | 11611 | remote_buffer_add_string (char **buffer, int *left, const char *string) |
a6b151f1 DJ |
11612 | { |
11613 | int len = strlen (string); | |
11614 | ||
11615 | if (len > *left) | |
11616 | error (_("Packet too long for target.")); | |
11617 | ||
11618 | memcpy (*buffer, string, len); | |
11619 | *buffer += len; | |
11620 | *left -= len; | |
11621 | ||
11622 | /* NUL-terminate the buffer as a convenience, if there is | |
11623 | room. */ | |
11624 | if (*left) | |
11625 | **buffer = '\0'; | |
11626 | } | |
11627 | ||
11628 | /* If *LEFT is large enough, hex encode LEN bytes from BYTES into | |
11629 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11630 | decrease *LEFT. Otherwise raise an error. */ | |
11631 | ||
11632 | static void | |
11633 | remote_buffer_add_bytes (char **buffer, int *left, const gdb_byte *bytes, | |
11634 | int len) | |
11635 | { | |
11636 | if (2 * len > *left) | |
11637 | error (_("Packet too long for target.")); | |
11638 | ||
11639 | bin2hex (bytes, *buffer, len); | |
11640 | *buffer += 2 * len; | |
11641 | *left -= 2 * len; | |
11642 | ||
11643 | /* NUL-terminate the buffer as a convenience, if there is | |
11644 | room. */ | |
11645 | if (*left) | |
11646 | **buffer = '\0'; | |
11647 | } | |
11648 | ||
11649 | /* If *LEFT is large enough, convert VALUE to hex and add it to | |
11650 | *BUFFER, update *BUFFER to point to the new end of the buffer, and | |
11651 | decrease *LEFT. Otherwise raise an error. */ | |
11652 | ||
11653 | static void | |
11654 | remote_buffer_add_int (char **buffer, int *left, ULONGEST value) | |
11655 | { | |
11656 | int len = hexnumlen (value); | |
11657 | ||
11658 | if (len > *left) | |
11659 | error (_("Packet too long for target.")); | |
11660 | ||
11661 | hexnumstr (*buffer, value); | |
11662 | *buffer += len; | |
11663 | *left -= len; | |
11664 | ||
11665 | /* NUL-terminate the buffer as a convenience, if there is | |
11666 | room. */ | |
11667 | if (*left) | |
11668 | **buffer = '\0'; | |
11669 | } | |
11670 | ||
11671 | /* Parse an I/O result packet from BUFFER. Set RETCODE to the return | |
11672 | value, *REMOTE_ERRNO to the remote error number or zero if none | |
11673 | was included, and *ATTACHMENT to point to the start of the annex | |
11674 | if any. The length of the packet isn't needed here; there may | |
11675 | be NUL bytes in BUFFER, but they will be after *ATTACHMENT. | |
11676 | ||
11677 | Return 0 if the packet could be parsed, -1 if it could not. If | |
11678 | -1 is returned, the other variables may not be initialized. */ | |
11679 | ||
11680 | static int | |
11681 | remote_hostio_parse_result (char *buffer, int *retcode, | |
11682 | int *remote_errno, char **attachment) | |
11683 | { | |
11684 | char *p, *p2; | |
11685 | ||
11686 | *remote_errno = 0; | |
11687 | *attachment = NULL; | |
11688 | ||
11689 | if (buffer[0] != 'F') | |
11690 | return -1; | |
11691 | ||
11692 | errno = 0; | |
11693 | *retcode = strtol (&buffer[1], &p, 16); | |
11694 | if (errno != 0 || p == &buffer[1]) | |
11695 | return -1; | |
11696 | ||
11697 | /* Check for ",errno". */ | |
11698 | if (*p == ',') | |
11699 | { | |
11700 | errno = 0; | |
11701 | *remote_errno = strtol (p + 1, &p2, 16); | |
11702 | if (errno != 0 || p + 1 == p2) | |
11703 | return -1; | |
11704 | p = p2; | |
11705 | } | |
11706 | ||
11707 | /* Check for ";attachment". If there is no attachment, the | |
11708 | packet should end here. */ | |
11709 | if (*p == ';') | |
11710 | { | |
11711 | *attachment = p + 1; | |
11712 | return 0; | |
11713 | } | |
11714 | else if (*p == '\0') | |
11715 | return 0; | |
11716 | else | |
11717 | return -1; | |
11718 | } | |
11719 | ||
11720 | /* Send a prepared I/O packet to the target and read its response. | |
11721 | The prepared packet is in the global RS->BUF before this function | |
11722 | is called, and the answer is there when we return. | |
11723 | ||
11724 | COMMAND_BYTES is the length of the request to send, which may include | |
11725 | binary data. WHICH_PACKET is the packet configuration to check | |
11726 | before attempting a packet. If an error occurs, *REMOTE_ERRNO | |
11727 | is set to the error number and -1 is returned. Otherwise the value | |
11728 | returned by the function is returned. | |
11729 | ||
11730 | ATTACHMENT and ATTACHMENT_LEN should be non-NULL if and only if an | |
11731 | attachment is expected; an error will be reported if there's a | |
11732 | mismatch. If one is found, *ATTACHMENT will be set to point into | |
11733 | the packet buffer and *ATTACHMENT_LEN will be set to the | |
11734 | attachment's length. */ | |
11735 | ||
6b8edb51 PA |
11736 | int |
11737 | remote_target::remote_hostio_send_command (int command_bytes, int which_packet, | |
11738 | int *remote_errno, char **attachment, | |
11739 | int *attachment_len) | |
a6b151f1 DJ |
11740 | { |
11741 | struct remote_state *rs = get_remote_state (); | |
11742 | int ret, bytes_read; | |
11743 | char *attachment_tmp; | |
11744 | ||
20db9c52 | 11745 | if (packet_support (which_packet) == PACKET_DISABLE) |
a6b151f1 DJ |
11746 | { |
11747 | *remote_errno = FILEIO_ENOSYS; | |
11748 | return -1; | |
11749 | } | |
11750 | ||
8d64371b TT |
11751 | putpkt_binary (rs->buf.data (), command_bytes); |
11752 | bytes_read = getpkt_sane (&rs->buf, 0); | |
a6b151f1 DJ |
11753 | |
11754 | /* If it timed out, something is wrong. Don't try to parse the | |
11755 | buffer. */ | |
11756 | if (bytes_read < 0) | |
11757 | { | |
11758 | *remote_errno = FILEIO_EINVAL; | |
11759 | return -1; | |
11760 | } | |
11761 | ||
11762 | switch (packet_ok (rs->buf, &remote_protocol_packets[which_packet])) | |
11763 | { | |
11764 | case PACKET_ERROR: | |
11765 | *remote_errno = FILEIO_EINVAL; | |
11766 | return -1; | |
11767 | case PACKET_UNKNOWN: | |
11768 | *remote_errno = FILEIO_ENOSYS; | |
11769 | return -1; | |
11770 | case PACKET_OK: | |
11771 | break; | |
11772 | } | |
11773 | ||
8d64371b | 11774 | if (remote_hostio_parse_result (rs->buf.data (), &ret, remote_errno, |
a6b151f1 DJ |
11775 | &attachment_tmp)) |
11776 | { | |
11777 | *remote_errno = FILEIO_EINVAL; | |
11778 | return -1; | |
11779 | } | |
11780 | ||
11781 | /* Make sure we saw an attachment if and only if we expected one. */ | |
11782 | if ((attachment_tmp == NULL && attachment != NULL) | |
11783 | || (attachment_tmp != NULL && attachment == NULL)) | |
11784 | { | |
11785 | *remote_errno = FILEIO_EINVAL; | |
11786 | return -1; | |
11787 | } | |
11788 | ||
11789 | /* If an attachment was found, it must point into the packet buffer; | |
11790 | work out how many bytes there were. */ | |
11791 | if (attachment_tmp != NULL) | |
11792 | { | |
11793 | *attachment = attachment_tmp; | |
8d64371b | 11794 | *attachment_len = bytes_read - (*attachment - rs->buf.data ()); |
a6b151f1 DJ |
11795 | } |
11796 | ||
11797 | return ret; | |
11798 | } | |
11799 | ||
dd194f6b | 11800 | /* See declaration.h. */ |
80152258 | 11801 | |
dd194f6b PA |
11802 | void |
11803 | readahead_cache::invalidate () | |
80152258 | 11804 | { |
dd194f6b | 11805 | this->fd = -1; |
80152258 PA |
11806 | } |
11807 | ||
dd194f6b | 11808 | /* See declaration.h. */ |
80152258 | 11809 | |
dd194f6b PA |
11810 | void |
11811 | readahead_cache::invalidate_fd (int fd) | |
80152258 | 11812 | { |
dd194f6b PA |
11813 | if (this->fd == fd) |
11814 | this->fd = -1; | |
80152258 PA |
11815 | } |
11816 | ||
15a201c8 GB |
11817 | /* Set the filesystem remote_hostio functions that take FILENAME |
11818 | arguments will use. Return 0 on success, or -1 if an error | |
11819 | occurs (and set *REMOTE_ERRNO). */ | |
11820 | ||
6b8edb51 PA |
11821 | int |
11822 | remote_target::remote_hostio_set_filesystem (struct inferior *inf, | |
11823 | int *remote_errno) | |
15a201c8 GB |
11824 | { |
11825 | struct remote_state *rs = get_remote_state (); | |
11826 | int required_pid = (inf == NULL || inf->fake_pid_p) ? 0 : inf->pid; | |
8d64371b | 11827 | char *p = rs->buf.data (); |
15a201c8 GB |
11828 | int left = get_remote_packet_size () - 1; |
11829 | char arg[9]; | |
11830 | int ret; | |
11831 | ||
11832 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11833 | return 0; | |
11834 | ||
11835 | if (rs->fs_pid != -1 && required_pid == rs->fs_pid) | |
11836 | return 0; | |
11837 | ||
11838 | remote_buffer_add_string (&p, &left, "vFile:setfs:"); | |
11839 | ||
11840 | xsnprintf (arg, sizeof (arg), "%x", required_pid); | |
11841 | remote_buffer_add_string (&p, &left, arg); | |
11842 | ||
8d64371b | 11843 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_setfs, |
15a201c8 GB |
11844 | remote_errno, NULL, NULL); |
11845 | ||
11846 | if (packet_support (PACKET_vFile_setfs) == PACKET_DISABLE) | |
11847 | return 0; | |
11848 | ||
11849 | if (ret == 0) | |
11850 | rs->fs_pid = required_pid; | |
11851 | ||
11852 | return ret; | |
11853 | } | |
11854 | ||
12e2a5fd | 11855 | /* Implementation of to_fileio_open. */ |
a6b151f1 | 11856 | |
6b8edb51 PA |
11857 | int |
11858 | remote_target::remote_hostio_open (inferior *inf, const char *filename, | |
11859 | int flags, int mode, int warn_if_slow, | |
11860 | int *remote_errno) | |
a6b151f1 DJ |
11861 | { |
11862 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 11863 | char *p = rs->buf.data (); |
a6b151f1 DJ |
11864 | int left = get_remote_packet_size () - 1; |
11865 | ||
4313b8c0 GB |
11866 | if (warn_if_slow) |
11867 | { | |
11868 | static int warning_issued = 0; | |
11869 | ||
11870 | printf_unfiltered (_("Reading %s from remote target...\n"), | |
11871 | filename); | |
11872 | ||
11873 | if (!warning_issued) | |
11874 | { | |
11875 | warning (_("File transfers from remote targets can be slow." | |
11876 | " Use \"set sysroot\" to access files locally" | |
11877 | " instead.")); | |
11878 | warning_issued = 1; | |
11879 | } | |
11880 | } | |
11881 | ||
15a201c8 GB |
11882 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
11883 | return -1; | |
11884 | ||
a6b151f1 DJ |
11885 | remote_buffer_add_string (&p, &left, "vFile:open:"); |
11886 | ||
11887 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
11888 | strlen (filename)); | |
11889 | remote_buffer_add_string (&p, &left, ","); | |
11890 | ||
11891 | remote_buffer_add_int (&p, &left, flags); | |
11892 | remote_buffer_add_string (&p, &left, ","); | |
11893 | ||
11894 | remote_buffer_add_int (&p, &left, mode); | |
11895 | ||
8d64371b | 11896 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_open, |
a6b151f1 DJ |
11897 | remote_errno, NULL, NULL); |
11898 | } | |
11899 | ||
f6ac5f3d PA |
11900 | int |
11901 | remote_target::fileio_open (struct inferior *inf, const char *filename, | |
11902 | int flags, int mode, int warn_if_slow, | |
11903 | int *remote_errno) | |
11904 | { | |
6b8edb51 | 11905 | return remote_hostio_open (inf, filename, flags, mode, warn_if_slow, |
f6ac5f3d PA |
11906 | remote_errno); |
11907 | } | |
11908 | ||
12e2a5fd | 11909 | /* Implementation of to_fileio_pwrite. */ |
a6b151f1 | 11910 | |
6b8edb51 PA |
11911 | int |
11912 | remote_target::remote_hostio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
11913 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11914 | { |
11915 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 11916 | char *p = rs->buf.data (); |
a6b151f1 DJ |
11917 | int left = get_remote_packet_size (); |
11918 | int out_len; | |
11919 | ||
dd194f6b | 11920 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 11921 | |
a6b151f1 DJ |
11922 | remote_buffer_add_string (&p, &left, "vFile:pwrite:"); |
11923 | ||
11924 | remote_buffer_add_int (&p, &left, fd); | |
11925 | remote_buffer_add_string (&p, &left, ","); | |
11926 | ||
11927 | remote_buffer_add_int (&p, &left, offset); | |
11928 | remote_buffer_add_string (&p, &left, ","); | |
11929 | ||
124e13d9 | 11930 | p += remote_escape_output (write_buf, len, 1, (gdb_byte *) p, &out_len, |
8d64371b TT |
11931 | (get_remote_packet_size () |
11932 | - (p - rs->buf.data ()))); | |
a6b151f1 | 11933 | |
8d64371b | 11934 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pwrite, |
a6b151f1 DJ |
11935 | remote_errno, NULL, NULL); |
11936 | } | |
11937 | ||
f6ac5f3d PA |
11938 | int |
11939 | remote_target::fileio_pwrite (int fd, const gdb_byte *write_buf, int len, | |
11940 | ULONGEST offset, int *remote_errno) | |
11941 | { | |
6b8edb51 | 11942 | return remote_hostio_pwrite (fd, write_buf, len, offset, remote_errno); |
f6ac5f3d PA |
11943 | } |
11944 | ||
80152258 PA |
11945 | /* Helper for the implementation of to_fileio_pread. Read the file |
11946 | from the remote side with vFile:pread. */ | |
a6b151f1 | 11947 | |
6b8edb51 PA |
11948 | int |
11949 | remote_target::remote_hostio_pread_vFile (int fd, gdb_byte *read_buf, int len, | |
11950 | ULONGEST offset, int *remote_errno) | |
a6b151f1 DJ |
11951 | { |
11952 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 11953 | char *p = rs->buf.data (); |
a6b151f1 DJ |
11954 | char *attachment; |
11955 | int left = get_remote_packet_size (); | |
11956 | int ret, attachment_len; | |
11957 | int read_len; | |
11958 | ||
11959 | remote_buffer_add_string (&p, &left, "vFile:pread:"); | |
11960 | ||
11961 | remote_buffer_add_int (&p, &left, fd); | |
11962 | remote_buffer_add_string (&p, &left, ","); | |
11963 | ||
11964 | remote_buffer_add_int (&p, &left, len); | |
11965 | remote_buffer_add_string (&p, &left, ","); | |
11966 | ||
11967 | remote_buffer_add_int (&p, &left, offset); | |
11968 | ||
8d64371b | 11969 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_pread, |
a6b151f1 DJ |
11970 | remote_errno, &attachment, |
11971 | &attachment_len); | |
11972 | ||
11973 | if (ret < 0) | |
11974 | return ret; | |
11975 | ||
bc20a4af | 11976 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
a6b151f1 DJ |
11977 | read_buf, len); |
11978 | if (read_len != ret) | |
11979 | error (_("Read returned %d, but %d bytes."), ret, (int) read_len); | |
11980 | ||
11981 | return ret; | |
11982 | } | |
11983 | ||
dd194f6b | 11984 | /* See declaration.h. */ |
80152258 | 11985 | |
dd194f6b PA |
11986 | int |
11987 | readahead_cache::pread (int fd, gdb_byte *read_buf, size_t len, | |
11988 | ULONGEST offset) | |
80152258 | 11989 | { |
dd194f6b PA |
11990 | if (this->fd == fd |
11991 | && this->offset <= offset | |
11992 | && offset < this->offset + this->bufsize) | |
80152258 | 11993 | { |
dd194f6b | 11994 | ULONGEST max = this->offset + this->bufsize; |
80152258 PA |
11995 | |
11996 | if (offset + len > max) | |
11997 | len = max - offset; | |
11998 | ||
dd194f6b | 11999 | memcpy (read_buf, this->buf + offset - this->offset, len); |
80152258 PA |
12000 | return len; |
12001 | } | |
12002 | ||
12003 | return 0; | |
12004 | } | |
12005 | ||
12006 | /* Implementation of to_fileio_pread. */ | |
12007 | ||
6b8edb51 PA |
12008 | int |
12009 | remote_target::remote_hostio_pread (int fd, gdb_byte *read_buf, int len, | |
12010 | ULONGEST offset, int *remote_errno) | |
80152258 PA |
12011 | { |
12012 | int ret; | |
12013 | struct remote_state *rs = get_remote_state (); | |
dd194f6b | 12014 | readahead_cache *cache = &rs->readahead_cache; |
80152258 | 12015 | |
dd194f6b | 12016 | ret = cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12017 | if (ret > 0) |
12018 | { | |
12019 | cache->hit_count++; | |
12020 | ||
12021 | if (remote_debug) | |
12022 | fprintf_unfiltered (gdb_stdlog, "readahead cache hit %s\n", | |
12023 | pulongest (cache->hit_count)); | |
12024 | return ret; | |
12025 | } | |
12026 | ||
12027 | cache->miss_count++; | |
12028 | if (remote_debug) | |
12029 | fprintf_unfiltered (gdb_stdlog, "readahead cache miss %s\n", | |
12030 | pulongest (cache->miss_count)); | |
12031 | ||
12032 | cache->fd = fd; | |
12033 | cache->offset = offset; | |
12034 | cache->bufsize = get_remote_packet_size (); | |
224c3ddb | 12035 | cache->buf = (gdb_byte *) xrealloc (cache->buf, cache->bufsize); |
80152258 | 12036 | |
6b8edb51 | 12037 | ret = remote_hostio_pread_vFile (cache->fd, cache->buf, cache->bufsize, |
80152258 PA |
12038 | cache->offset, remote_errno); |
12039 | if (ret <= 0) | |
12040 | { | |
dd194f6b | 12041 | cache->invalidate_fd (fd); |
80152258 PA |
12042 | return ret; |
12043 | } | |
12044 | ||
12045 | cache->bufsize = ret; | |
dd194f6b | 12046 | return cache->pread (fd, read_buf, len, offset); |
80152258 PA |
12047 | } |
12048 | ||
f6ac5f3d PA |
12049 | int |
12050 | remote_target::fileio_pread (int fd, gdb_byte *read_buf, int len, | |
12051 | ULONGEST offset, int *remote_errno) | |
12052 | { | |
6b8edb51 | 12053 | return remote_hostio_pread (fd, read_buf, len, offset, remote_errno); |
f6ac5f3d PA |
12054 | } |
12055 | ||
12e2a5fd | 12056 | /* Implementation of to_fileio_close. */ |
a6b151f1 | 12057 | |
6b8edb51 PA |
12058 | int |
12059 | remote_target::remote_hostio_close (int fd, int *remote_errno) | |
a6b151f1 DJ |
12060 | { |
12061 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12062 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12063 | int left = get_remote_packet_size () - 1; |
12064 | ||
dd194f6b | 12065 | rs->readahead_cache.invalidate_fd (fd); |
80152258 | 12066 | |
a6b151f1 DJ |
12067 | remote_buffer_add_string (&p, &left, "vFile:close:"); |
12068 | ||
12069 | remote_buffer_add_int (&p, &left, fd); | |
12070 | ||
8d64371b | 12071 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_close, |
a6b151f1 DJ |
12072 | remote_errno, NULL, NULL); |
12073 | } | |
12074 | ||
f6ac5f3d PA |
12075 | int |
12076 | remote_target::fileio_close (int fd, int *remote_errno) | |
12077 | { | |
6b8edb51 | 12078 | return remote_hostio_close (fd, remote_errno); |
f6ac5f3d PA |
12079 | } |
12080 | ||
12e2a5fd | 12081 | /* Implementation of to_fileio_unlink. */ |
a6b151f1 | 12082 | |
6b8edb51 PA |
12083 | int |
12084 | remote_target::remote_hostio_unlink (inferior *inf, const char *filename, | |
12085 | int *remote_errno) | |
a6b151f1 DJ |
12086 | { |
12087 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12088 | char *p = rs->buf.data (); |
a6b151f1 DJ |
12089 | int left = get_remote_packet_size () - 1; |
12090 | ||
15a201c8 GB |
12091 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
12092 | return -1; | |
12093 | ||
a6b151f1 DJ |
12094 | remote_buffer_add_string (&p, &left, "vFile:unlink:"); |
12095 | ||
12096 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12097 | strlen (filename)); | |
12098 | ||
8d64371b | 12099 | return remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_unlink, |
a6b151f1 DJ |
12100 | remote_errno, NULL, NULL); |
12101 | } | |
12102 | ||
f6ac5f3d PA |
12103 | int |
12104 | remote_target::fileio_unlink (struct inferior *inf, const char *filename, | |
12105 | int *remote_errno) | |
12106 | { | |
6b8edb51 | 12107 | return remote_hostio_unlink (inf, filename, remote_errno); |
f6ac5f3d PA |
12108 | } |
12109 | ||
12e2a5fd | 12110 | /* Implementation of to_fileio_readlink. */ |
b9e7b9c3 | 12111 | |
f6ac5f3d PA |
12112 | gdb::optional<std::string> |
12113 | remote_target::fileio_readlink (struct inferior *inf, const char *filename, | |
12114 | int *remote_errno) | |
b9e7b9c3 UW |
12115 | { |
12116 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12117 | char *p = rs->buf.data (); |
b9e7b9c3 UW |
12118 | char *attachment; |
12119 | int left = get_remote_packet_size (); | |
12120 | int len, attachment_len; | |
12121 | int read_len; | |
b9e7b9c3 | 12122 | |
15a201c8 | 12123 | if (remote_hostio_set_filesystem (inf, remote_errno) != 0) |
e0d3522b | 12124 | return {}; |
15a201c8 | 12125 | |
b9e7b9c3 UW |
12126 | remote_buffer_add_string (&p, &left, "vFile:readlink:"); |
12127 | ||
12128 | remote_buffer_add_bytes (&p, &left, (const gdb_byte *) filename, | |
12129 | strlen (filename)); | |
12130 | ||
8d64371b | 12131 | len = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_readlink, |
b9e7b9c3 UW |
12132 | remote_errno, &attachment, |
12133 | &attachment_len); | |
12134 | ||
12135 | if (len < 0) | |
e0d3522b | 12136 | return {}; |
b9e7b9c3 | 12137 | |
e0d3522b | 12138 | std::string ret (len, '\0'); |
b9e7b9c3 | 12139 | |
bc20a4af | 12140 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
e0d3522b | 12141 | (gdb_byte *) &ret[0], len); |
b9e7b9c3 UW |
12142 | if (read_len != len) |
12143 | error (_("Readlink returned %d, but %d bytes."), len, read_len); | |
12144 | ||
b9e7b9c3 UW |
12145 | return ret; |
12146 | } | |
12147 | ||
12e2a5fd | 12148 | /* Implementation of to_fileio_fstat. */ |
0a93529c | 12149 | |
f6ac5f3d PA |
12150 | int |
12151 | remote_target::fileio_fstat (int fd, struct stat *st, int *remote_errno) | |
0a93529c GB |
12152 | { |
12153 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 12154 | char *p = rs->buf.data (); |
0a93529c GB |
12155 | int left = get_remote_packet_size (); |
12156 | int attachment_len, ret; | |
12157 | char *attachment; | |
12158 | struct fio_stat fst; | |
12159 | int read_len; | |
12160 | ||
464b0089 GB |
12161 | remote_buffer_add_string (&p, &left, "vFile:fstat:"); |
12162 | ||
12163 | remote_buffer_add_int (&p, &left, fd); | |
12164 | ||
8d64371b | 12165 | ret = remote_hostio_send_command (p - rs->buf.data (), PACKET_vFile_fstat, |
464b0089 GB |
12166 | remote_errno, &attachment, |
12167 | &attachment_len); | |
12168 | if (ret < 0) | |
0a93529c | 12169 | { |
464b0089 GB |
12170 | if (*remote_errno != FILEIO_ENOSYS) |
12171 | return ret; | |
12172 | ||
0a93529c GB |
12173 | /* Strictly we should return -1, ENOSYS here, but when |
12174 | "set sysroot remote:" was implemented in August 2008 | |
12175 | BFD's need for a stat function was sidestepped with | |
12176 | this hack. This was not remedied until March 2015 | |
12177 | so we retain the previous behavior to avoid breaking | |
12178 | compatibility. | |
12179 | ||
12180 | Note that the memset is a March 2015 addition; older | |
12181 | GDBs set st_size *and nothing else* so the structure | |
12182 | would have garbage in all other fields. This might | |
12183 | break something but retaining the previous behavior | |
12184 | here would be just too wrong. */ | |
12185 | ||
12186 | memset (st, 0, sizeof (struct stat)); | |
12187 | st->st_size = INT_MAX; | |
12188 | return 0; | |
12189 | } | |
12190 | ||
0a93529c GB |
12191 | read_len = remote_unescape_input ((gdb_byte *) attachment, attachment_len, |
12192 | (gdb_byte *) &fst, sizeof (fst)); | |
12193 | ||
12194 | if (read_len != ret) | |
12195 | error (_("vFile:fstat returned %d, but %d bytes."), ret, read_len); | |
12196 | ||
12197 | if (read_len != sizeof (fst)) | |
12198 | error (_("vFile:fstat returned %d bytes, but expecting %d."), | |
12199 | read_len, (int) sizeof (fst)); | |
12200 | ||
12201 | remote_fileio_to_host_stat (&fst, st); | |
12202 | ||
12203 | return 0; | |
12204 | } | |
12205 | ||
12e2a5fd | 12206 | /* Implementation of to_filesystem_is_local. */ |
e3dd7556 | 12207 | |
57810aa7 | 12208 | bool |
f6ac5f3d | 12209 | remote_target::filesystem_is_local () |
e3dd7556 GB |
12210 | { |
12211 | /* Valgrind GDB presents itself as a remote target but works | |
12212 | on the local filesystem: it does not implement remote get | |
12213 | and users are not expected to set a sysroot. To handle | |
12214 | this case we treat the remote filesystem as local if the | |
12215 | sysroot is exactly TARGET_SYSROOT_PREFIX and if the stub | |
12216 | does not support vFile:open. */ | |
a3be80c3 | 12217 | if (strcmp (gdb_sysroot, TARGET_SYSROOT_PREFIX) == 0) |
e3dd7556 GB |
12218 | { |
12219 | enum packet_support ps = packet_support (PACKET_vFile_open); | |
12220 | ||
12221 | if (ps == PACKET_SUPPORT_UNKNOWN) | |
12222 | { | |
12223 | int fd, remote_errno; | |
12224 | ||
12225 | /* Try opening a file to probe support. The supplied | |
12226 | filename is irrelevant, we only care about whether | |
12227 | the stub recognizes the packet or not. */ | |
6b8edb51 | 12228 | fd = remote_hostio_open (NULL, "just probing", |
4313b8c0 | 12229 | FILEIO_O_RDONLY, 0700, 0, |
e3dd7556 GB |
12230 | &remote_errno); |
12231 | ||
12232 | if (fd >= 0) | |
6b8edb51 | 12233 | remote_hostio_close (fd, &remote_errno); |
e3dd7556 GB |
12234 | |
12235 | ps = packet_support (PACKET_vFile_open); | |
12236 | } | |
12237 | ||
12238 | if (ps == PACKET_DISABLE) | |
12239 | { | |
12240 | static int warning_issued = 0; | |
12241 | ||
12242 | if (!warning_issued) | |
12243 | { | |
12244 | warning (_("remote target does not support file" | |
12245 | " transfer, attempting to access files" | |
12246 | " from local filesystem.")); | |
12247 | warning_issued = 1; | |
12248 | } | |
12249 | ||
57810aa7 | 12250 | return true; |
e3dd7556 GB |
12251 | } |
12252 | } | |
12253 | ||
57810aa7 | 12254 | return false; |
e3dd7556 GB |
12255 | } |
12256 | ||
a6b151f1 DJ |
12257 | static int |
12258 | remote_fileio_errno_to_host (int errnum) | |
12259 | { | |
12260 | switch (errnum) | |
12261 | { | |
12262 | case FILEIO_EPERM: | |
12263 | return EPERM; | |
12264 | case FILEIO_ENOENT: | |
12265 | return ENOENT; | |
12266 | case FILEIO_EINTR: | |
12267 | return EINTR; | |
12268 | case FILEIO_EIO: | |
12269 | return EIO; | |
12270 | case FILEIO_EBADF: | |
12271 | return EBADF; | |
12272 | case FILEIO_EACCES: | |
12273 | return EACCES; | |
12274 | case FILEIO_EFAULT: | |
12275 | return EFAULT; | |
12276 | case FILEIO_EBUSY: | |
12277 | return EBUSY; | |
12278 | case FILEIO_EEXIST: | |
12279 | return EEXIST; | |
12280 | case FILEIO_ENODEV: | |
12281 | return ENODEV; | |
12282 | case FILEIO_ENOTDIR: | |
12283 | return ENOTDIR; | |
12284 | case FILEIO_EISDIR: | |
12285 | return EISDIR; | |
12286 | case FILEIO_EINVAL: | |
12287 | return EINVAL; | |
12288 | case FILEIO_ENFILE: | |
12289 | return ENFILE; | |
12290 | case FILEIO_EMFILE: | |
12291 | return EMFILE; | |
12292 | case FILEIO_EFBIG: | |
12293 | return EFBIG; | |
12294 | case FILEIO_ENOSPC: | |
12295 | return ENOSPC; | |
12296 | case FILEIO_ESPIPE: | |
12297 | return ESPIPE; | |
12298 | case FILEIO_EROFS: | |
12299 | return EROFS; | |
12300 | case FILEIO_ENOSYS: | |
12301 | return ENOSYS; | |
12302 | case FILEIO_ENAMETOOLONG: | |
12303 | return ENAMETOOLONG; | |
12304 | } | |
12305 | return -1; | |
12306 | } | |
12307 | ||
12308 | static char * | |
12309 | remote_hostio_error (int errnum) | |
12310 | { | |
12311 | int host_error = remote_fileio_errno_to_host (errnum); | |
12312 | ||
12313 | if (host_error == -1) | |
12314 | error (_("Unknown remote I/O error %d"), errnum); | |
12315 | else | |
12316 | error (_("Remote I/O error: %s"), safe_strerror (host_error)); | |
12317 | } | |
12318 | ||
440b7aec PA |
12319 | /* A RAII wrapper around a remote file descriptor. */ |
12320 | ||
12321 | class scoped_remote_fd | |
a6b151f1 | 12322 | { |
440b7aec | 12323 | public: |
6b8edb51 PA |
12324 | scoped_remote_fd (remote_target *remote, int fd) |
12325 | : m_remote (remote), m_fd (fd) | |
440b7aec PA |
12326 | { |
12327 | } | |
a6b151f1 | 12328 | |
440b7aec PA |
12329 | ~scoped_remote_fd () |
12330 | { | |
12331 | if (m_fd != -1) | |
12332 | { | |
12333 | try | |
12334 | { | |
12335 | int remote_errno; | |
6b8edb51 | 12336 | m_remote->remote_hostio_close (m_fd, &remote_errno); |
440b7aec PA |
12337 | } |
12338 | catch (...) | |
12339 | { | |
12340 | /* Swallow exception before it escapes the dtor. If | |
12341 | something goes wrong, likely the connection is gone, | |
12342 | and there's nothing else that can be done. */ | |
12343 | } | |
12344 | } | |
12345 | } | |
12346 | ||
12347 | DISABLE_COPY_AND_ASSIGN (scoped_remote_fd); | |
12348 | ||
12349 | /* Release ownership of the file descriptor, and return it. */ | |
88a774b9 | 12350 | ATTRIBUTE_UNUSED_RESULT int release () noexcept |
440b7aec PA |
12351 | { |
12352 | int fd = m_fd; | |
12353 | m_fd = -1; | |
12354 | return fd; | |
12355 | } | |
12356 | ||
12357 | /* Return the owned file descriptor. */ | |
12358 | int get () const noexcept | |
12359 | { | |
12360 | return m_fd; | |
12361 | } | |
12362 | ||
12363 | private: | |
6b8edb51 PA |
12364 | /* The remote target. */ |
12365 | remote_target *m_remote; | |
12366 | ||
440b7aec PA |
12367 | /* The owned remote I/O file descriptor. */ |
12368 | int m_fd; | |
12369 | }; | |
a6b151f1 DJ |
12370 | |
12371 | void | |
12372 | remote_file_put (const char *local_file, const char *remote_file, int from_tty) | |
6b8edb51 PA |
12373 | { |
12374 | remote_target *remote = get_current_remote_target (); | |
12375 | ||
12376 | if (remote == nullptr) | |
12377 | error (_("command can only be used with remote target")); | |
12378 | ||
12379 | remote->remote_file_put (local_file, remote_file, from_tty); | |
12380 | } | |
12381 | ||
12382 | void | |
12383 | remote_target::remote_file_put (const char *local_file, const char *remote_file, | |
12384 | int from_tty) | |
a6b151f1 | 12385 | { |
440b7aec | 12386 | int retcode, remote_errno, bytes, io_size; |
a6b151f1 DJ |
12387 | int bytes_in_buffer; |
12388 | int saw_eof; | |
12389 | ULONGEST offset; | |
a6b151f1 | 12390 | |
d419f42d | 12391 | gdb_file_up file = gdb_fopen_cloexec (local_file, "rb"); |
a6b151f1 DJ |
12392 | if (file == NULL) |
12393 | perror_with_name (local_file); | |
a6b151f1 | 12394 | |
440b7aec | 12395 | scoped_remote_fd fd |
6b8edb51 PA |
12396 | (this, remote_hostio_open (NULL, |
12397 | remote_file, (FILEIO_O_WRONLY | FILEIO_O_CREAT | |
12398 | | FILEIO_O_TRUNC), | |
12399 | 0700, 0, &remote_errno)); | |
440b7aec | 12400 | if (fd.get () == -1) |
a6b151f1 DJ |
12401 | remote_hostio_error (remote_errno); |
12402 | ||
12403 | /* Send up to this many bytes at once. They won't all fit in the | |
12404 | remote packet limit, so we'll transfer slightly fewer. */ | |
12405 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12406 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12407 | |
a6b151f1 DJ |
12408 | bytes_in_buffer = 0; |
12409 | saw_eof = 0; | |
12410 | offset = 0; | |
12411 | while (bytes_in_buffer || !saw_eof) | |
12412 | { | |
12413 | if (!saw_eof) | |
12414 | { | |
5ca3b260 | 12415 | bytes = fread (buffer.data () + bytes_in_buffer, 1, |
3e43a32a | 12416 | io_size - bytes_in_buffer, |
d419f42d | 12417 | file.get ()); |
a6b151f1 DJ |
12418 | if (bytes == 0) |
12419 | { | |
d419f42d | 12420 | if (ferror (file.get ())) |
a6b151f1 DJ |
12421 | error (_("Error reading %s."), local_file); |
12422 | else | |
12423 | { | |
12424 | /* EOF. Unless there is something still in the | |
12425 | buffer from the last iteration, we are done. */ | |
12426 | saw_eof = 1; | |
12427 | if (bytes_in_buffer == 0) | |
12428 | break; | |
12429 | } | |
12430 | } | |
12431 | } | |
12432 | else | |
12433 | bytes = 0; | |
12434 | ||
12435 | bytes += bytes_in_buffer; | |
12436 | bytes_in_buffer = 0; | |
12437 | ||
5ca3b260 | 12438 | retcode = remote_hostio_pwrite (fd.get (), buffer.data (), bytes, |
3e43a32a | 12439 | offset, &remote_errno); |
a6b151f1 DJ |
12440 | |
12441 | if (retcode < 0) | |
12442 | remote_hostio_error (remote_errno); | |
12443 | else if (retcode == 0) | |
12444 | error (_("Remote write of %d bytes returned 0!"), bytes); | |
12445 | else if (retcode < bytes) | |
12446 | { | |
12447 | /* Short write. Save the rest of the read data for the next | |
12448 | write. */ | |
12449 | bytes_in_buffer = bytes - retcode; | |
5ca3b260 | 12450 | memmove (buffer.data (), buffer.data () + retcode, bytes_in_buffer); |
a6b151f1 DJ |
12451 | } |
12452 | ||
12453 | offset += retcode; | |
12454 | } | |
12455 | ||
6b8edb51 | 12456 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12457 | remote_hostio_error (remote_errno); |
12458 | ||
12459 | if (from_tty) | |
12460 | printf_filtered (_("Successfully sent file \"%s\".\n"), local_file); | |
a6b151f1 DJ |
12461 | } |
12462 | ||
12463 | void | |
12464 | remote_file_get (const char *remote_file, const char *local_file, int from_tty) | |
6b8edb51 PA |
12465 | { |
12466 | remote_target *remote = get_current_remote_target (); | |
12467 | ||
12468 | if (remote == nullptr) | |
12469 | error (_("command can only be used with remote target")); | |
12470 | ||
12471 | remote->remote_file_get (remote_file, local_file, from_tty); | |
12472 | } | |
12473 | ||
12474 | void | |
12475 | remote_target::remote_file_get (const char *remote_file, const char *local_file, | |
12476 | int from_tty) | |
a6b151f1 | 12477 | { |
440b7aec | 12478 | int remote_errno, bytes, io_size; |
a6b151f1 | 12479 | ULONGEST offset; |
a6b151f1 | 12480 | |
440b7aec | 12481 | scoped_remote_fd fd |
6b8edb51 PA |
12482 | (this, remote_hostio_open (NULL, |
12483 | remote_file, FILEIO_O_RDONLY, 0, 0, | |
12484 | &remote_errno)); | |
440b7aec | 12485 | if (fd.get () == -1) |
a6b151f1 DJ |
12486 | remote_hostio_error (remote_errno); |
12487 | ||
d419f42d | 12488 | gdb_file_up file = gdb_fopen_cloexec (local_file, "wb"); |
a6b151f1 DJ |
12489 | if (file == NULL) |
12490 | perror_with_name (local_file); | |
a6b151f1 DJ |
12491 | |
12492 | /* Send up to this many bytes at once. They won't all fit in the | |
12493 | remote packet limit, so we'll transfer slightly fewer. */ | |
12494 | io_size = get_remote_packet_size (); | |
5ca3b260 | 12495 | gdb::byte_vector buffer (io_size); |
a6b151f1 | 12496 | |
a6b151f1 DJ |
12497 | offset = 0; |
12498 | while (1) | |
12499 | { | |
5ca3b260 | 12500 | bytes = remote_hostio_pread (fd.get (), buffer.data (), io_size, offset, |
440b7aec | 12501 | &remote_errno); |
a6b151f1 DJ |
12502 | if (bytes == 0) |
12503 | /* Success, but no bytes, means end-of-file. */ | |
12504 | break; | |
12505 | if (bytes == -1) | |
12506 | remote_hostio_error (remote_errno); | |
12507 | ||
12508 | offset += bytes; | |
12509 | ||
5ca3b260 | 12510 | bytes = fwrite (buffer.data (), 1, bytes, file.get ()); |
a6b151f1 DJ |
12511 | if (bytes == 0) |
12512 | perror_with_name (local_file); | |
12513 | } | |
12514 | ||
6b8edb51 | 12515 | if (remote_hostio_close (fd.release (), &remote_errno)) |
a6b151f1 DJ |
12516 | remote_hostio_error (remote_errno); |
12517 | ||
12518 | if (from_tty) | |
12519 | printf_filtered (_("Successfully fetched file \"%s\".\n"), remote_file); | |
a6b151f1 DJ |
12520 | } |
12521 | ||
12522 | void | |
12523 | remote_file_delete (const char *remote_file, int from_tty) | |
12524 | { | |
6b8edb51 | 12525 | remote_target *remote = get_current_remote_target (); |
a6b151f1 | 12526 | |
6b8edb51 | 12527 | if (remote == nullptr) |
a6b151f1 DJ |
12528 | error (_("command can only be used with remote target")); |
12529 | ||
6b8edb51 PA |
12530 | remote->remote_file_delete (remote_file, from_tty); |
12531 | } | |
12532 | ||
12533 | void | |
12534 | remote_target::remote_file_delete (const char *remote_file, int from_tty) | |
12535 | { | |
12536 | int retcode, remote_errno; | |
12537 | ||
12538 | retcode = remote_hostio_unlink (NULL, remote_file, &remote_errno); | |
a6b151f1 DJ |
12539 | if (retcode == -1) |
12540 | remote_hostio_error (remote_errno); | |
12541 | ||
12542 | if (from_tty) | |
12543 | printf_filtered (_("Successfully deleted file \"%s\".\n"), remote_file); | |
12544 | } | |
12545 | ||
12546 | static void | |
ac88e2de | 12547 | remote_put_command (const char *args, int from_tty) |
a6b151f1 | 12548 | { |
d1a41061 PP |
12549 | if (args == NULL) |
12550 | error_no_arg (_("file to put")); | |
12551 | ||
773a1edc | 12552 | gdb_argv argv (args); |
a6b151f1 DJ |
12553 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12554 | error (_("Invalid parameters to remote put")); | |
12555 | ||
12556 | remote_file_put (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12557 | } |
12558 | ||
12559 | static void | |
ac88e2de | 12560 | remote_get_command (const char *args, int from_tty) |
a6b151f1 | 12561 | { |
d1a41061 PP |
12562 | if (args == NULL) |
12563 | error_no_arg (_("file to get")); | |
12564 | ||
773a1edc | 12565 | gdb_argv argv (args); |
a6b151f1 DJ |
12566 | if (argv[0] == NULL || argv[1] == NULL || argv[2] != NULL) |
12567 | error (_("Invalid parameters to remote get")); | |
12568 | ||
12569 | remote_file_get (argv[0], argv[1], from_tty); | |
a6b151f1 DJ |
12570 | } |
12571 | ||
12572 | static void | |
ac88e2de | 12573 | remote_delete_command (const char *args, int from_tty) |
a6b151f1 | 12574 | { |
d1a41061 PP |
12575 | if (args == NULL) |
12576 | error_no_arg (_("file to delete")); | |
12577 | ||
773a1edc | 12578 | gdb_argv argv (args); |
a6b151f1 DJ |
12579 | if (argv[0] == NULL || argv[1] != NULL) |
12580 | error (_("Invalid parameters to remote delete")); | |
12581 | ||
12582 | remote_file_delete (argv[0], from_tty); | |
a6b151f1 DJ |
12583 | } |
12584 | ||
12585 | static void | |
981a3fb3 | 12586 | remote_command (const char *args, int from_tty) |
a6b151f1 | 12587 | { |
635c7e8a | 12588 | help_list (remote_cmdlist, "remote ", all_commands, gdb_stdout); |
a6b151f1 DJ |
12589 | } |
12590 | ||
57810aa7 | 12591 | bool |
f6ac5f3d | 12592 | remote_target::can_execute_reverse () |
b2175913 | 12593 | { |
4082afcc PA |
12594 | if (packet_support (PACKET_bs) == PACKET_ENABLE |
12595 | || packet_support (PACKET_bc) == PACKET_ENABLE) | |
57810aa7 | 12596 | return true; |
40ab02ce | 12597 | else |
57810aa7 | 12598 | return false; |
b2175913 MS |
12599 | } |
12600 | ||
57810aa7 | 12601 | bool |
f6ac5f3d | 12602 | remote_target::supports_non_stop () |
74531fed | 12603 | { |
57810aa7 | 12604 | return true; |
74531fed PA |
12605 | } |
12606 | ||
57810aa7 | 12607 | bool |
f6ac5f3d | 12608 | remote_target::supports_disable_randomization () |
03583c20 UW |
12609 | { |
12610 | /* Only supported in extended mode. */ | |
57810aa7 | 12611 | return false; |
03583c20 UW |
12612 | } |
12613 | ||
57810aa7 | 12614 | bool |
f6ac5f3d | 12615 | remote_target::supports_multi_process () |
8a305172 PA |
12616 | { |
12617 | struct remote_state *rs = get_remote_state (); | |
a744cf53 | 12618 | |
8020350c | 12619 | return remote_multi_process_p (rs); |
8a305172 PA |
12620 | } |
12621 | ||
70221824 | 12622 | static int |
f6ac5f3d | 12623 | remote_supports_cond_tracepoints () |
782b2b07 | 12624 | { |
4082afcc | 12625 | return packet_support (PACKET_ConditionalTracepoints) == PACKET_ENABLE; |
782b2b07 SS |
12626 | } |
12627 | ||
57810aa7 | 12628 | bool |
f6ac5f3d | 12629 | remote_target::supports_evaluation_of_breakpoint_conditions () |
3788aec7 | 12630 | { |
4082afcc | 12631 | return packet_support (PACKET_ConditionalBreakpoints) == PACKET_ENABLE; |
3788aec7 LM |
12632 | } |
12633 | ||
70221824 | 12634 | static int |
f6ac5f3d | 12635 | remote_supports_fast_tracepoints () |
7a697b8d | 12636 | { |
4082afcc | 12637 | return packet_support (PACKET_FastTracepoints) == PACKET_ENABLE; |
7a697b8d SS |
12638 | } |
12639 | ||
0fb4aa4b | 12640 | static int |
f6ac5f3d | 12641 | remote_supports_static_tracepoints () |
0fb4aa4b | 12642 | { |
4082afcc | 12643 | return packet_support (PACKET_StaticTracepoints) == PACKET_ENABLE; |
0fb4aa4b PA |
12644 | } |
12645 | ||
1e4d1764 | 12646 | static int |
f6ac5f3d | 12647 | remote_supports_install_in_trace () |
1e4d1764 | 12648 | { |
4082afcc | 12649 | return packet_support (PACKET_InstallInTrace) == PACKET_ENABLE; |
1e4d1764 YQ |
12650 | } |
12651 | ||
57810aa7 | 12652 | bool |
f6ac5f3d | 12653 | remote_target::supports_enable_disable_tracepoint () |
d248b706 | 12654 | { |
4082afcc PA |
12655 | return (packet_support (PACKET_EnableDisableTracepoints_feature) |
12656 | == PACKET_ENABLE); | |
d248b706 KY |
12657 | } |
12658 | ||
57810aa7 | 12659 | bool |
f6ac5f3d | 12660 | remote_target::supports_string_tracing () |
3065dfb6 | 12661 | { |
4082afcc | 12662 | return packet_support (PACKET_tracenz_feature) == PACKET_ENABLE; |
3065dfb6 SS |
12663 | } |
12664 | ||
57810aa7 | 12665 | bool |
f6ac5f3d | 12666 | remote_target::can_run_breakpoint_commands () |
d3ce09f5 | 12667 | { |
4082afcc | 12668 | return packet_support (PACKET_BreakpointCommands) == PACKET_ENABLE; |
d3ce09f5 SS |
12669 | } |
12670 | ||
f6ac5f3d PA |
12671 | void |
12672 | remote_target::trace_init () | |
35b1e5cc | 12673 | { |
b6bb3468 PA |
12674 | struct remote_state *rs = get_remote_state (); |
12675 | ||
35b1e5cc | 12676 | putpkt ("QTinit"); |
b6bb3468 | 12677 | remote_get_noisy_reply (); |
8d64371b | 12678 | if (strcmp (rs->buf.data (), "OK") != 0) |
35b1e5cc SS |
12679 | error (_("Target does not support this command.")); |
12680 | } | |
12681 | ||
409873ef SS |
12682 | /* Recursive routine to walk through command list including loops, and |
12683 | download packets for each command. */ | |
12684 | ||
6b8edb51 PA |
12685 | void |
12686 | remote_target::remote_download_command_source (int num, ULONGEST addr, | |
12687 | struct command_line *cmds) | |
409873ef SS |
12688 | { |
12689 | struct remote_state *rs = get_remote_state (); | |
12690 | struct command_line *cmd; | |
12691 | ||
12692 | for (cmd = cmds; cmd; cmd = cmd->next) | |
12693 | { | |
0df8b418 | 12694 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 12695 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 12696 | encode_source_string (num, addr, "cmd", cmd->line, |
8d64371b TT |
12697 | rs->buf.data () + strlen (rs->buf.data ()), |
12698 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 12699 | putpkt (rs->buf); |
b6bb3468 | 12700 | remote_get_noisy_reply (); |
8d64371b | 12701 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
12702 | warning (_("Target does not support source download.")); |
12703 | ||
12704 | if (cmd->control_type == while_control | |
12705 | || cmd->control_type == while_stepping_control) | |
12706 | { | |
12973681 | 12707 | remote_download_command_source (num, addr, cmd->body_list_0.get ()); |
409873ef | 12708 | |
0df8b418 | 12709 | QUIT; /* Allow user to bail out with ^C. */ |
8d64371b | 12710 | strcpy (rs->buf.data (), "QTDPsrc:"); |
409873ef | 12711 | encode_source_string (num, addr, "cmd", "end", |
8d64371b TT |
12712 | rs->buf.data () + strlen (rs->buf.data ()), |
12713 | rs->buf.size () - strlen (rs->buf.data ())); | |
409873ef | 12714 | putpkt (rs->buf); |
b6bb3468 | 12715 | remote_get_noisy_reply (); |
8d64371b | 12716 | if (strcmp (rs->buf.data (), "OK")) |
409873ef SS |
12717 | warning (_("Target does not support source download.")); |
12718 | } | |
12719 | } | |
12720 | } | |
12721 | ||
f6ac5f3d PA |
12722 | void |
12723 | remote_target::download_tracepoint (struct bp_location *loc) | |
35b1e5cc SS |
12724 | { |
12725 | CORE_ADDR tpaddr; | |
409873ef | 12726 | char addrbuf[40]; |
b44ec619 SM |
12727 | std::vector<std::string> tdp_actions; |
12728 | std::vector<std::string> stepping_actions; | |
35b1e5cc | 12729 | char *pkt; |
e8ba3115 | 12730 | struct breakpoint *b = loc->owner; |
d9b3f62e | 12731 | struct tracepoint *t = (struct tracepoint *) b; |
b6bb3468 | 12732 | struct remote_state *rs = get_remote_state (); |
3df3a985 | 12733 | int ret; |
ff36536c | 12734 | const char *err_msg = _("Tracepoint packet too large for target."); |
3df3a985 PFC |
12735 | size_t size_left; |
12736 | ||
12737 | /* We use a buffer other than rs->buf because we'll build strings | |
12738 | across multiple statements, and other statements in between could | |
12739 | modify rs->buf. */ | |
12740 | gdb::char_vector buf (get_remote_packet_size ()); | |
35b1e5cc | 12741 | |
dc673c81 | 12742 | encode_actions_rsp (loc, &tdp_actions, &stepping_actions); |
e8ba3115 YQ |
12743 | |
12744 | tpaddr = loc->address; | |
12745 | sprintf_vma (addrbuf, tpaddr); | |
3df3a985 PFC |
12746 | ret = snprintf (buf.data (), buf.size (), "QTDP:%x:%s:%c:%lx:%x", |
12747 | b->number, addrbuf, /* address */ | |
12748 | (b->enable_state == bp_enabled ? 'E' : 'D'), | |
12749 | t->step_count, t->pass_count); | |
12750 | ||
12751 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12752 | error ("%s", err_msg); |
3df3a985 | 12753 | |
e8ba3115 YQ |
12754 | /* Fast tracepoints are mostly handled by the target, but we can |
12755 | tell the target how big of an instruction block should be moved | |
12756 | around. */ | |
12757 | if (b->type == bp_fast_tracepoint) | |
12758 | { | |
12759 | /* Only test for support at download time; we may not know | |
12760 | target capabilities at definition time. */ | |
12761 | if (remote_supports_fast_tracepoints ()) | |
35b1e5cc | 12762 | { |
6b940e6a PL |
12763 | if (gdbarch_fast_tracepoint_valid_at (loc->gdbarch, tpaddr, |
12764 | NULL)) | |
3df3a985 PFC |
12765 | { |
12766 | size_left = buf.size () - strlen (buf.data ()); | |
12767 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12768 | size_left, ":F%x", | |
12769 | gdb_insn_length (loc->gdbarch, tpaddr)); | |
12770 | ||
12771 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12772 | error ("%s", err_msg); |
3df3a985 | 12773 | } |
35b1e5cc | 12774 | else |
e8ba3115 YQ |
12775 | /* If it passed validation at definition but fails now, |
12776 | something is very wrong. */ | |
12777 | internal_error (__FILE__, __LINE__, | |
12778 | _("Fast tracepoint not " | |
12779 | "valid during download")); | |
35b1e5cc | 12780 | } |
e8ba3115 YQ |
12781 | else |
12782 | /* Fast tracepoints are functionally identical to regular | |
12783 | tracepoints, so don't take lack of support as a reason to | |
12784 | give up on the trace run. */ | |
12785 | warning (_("Target does not support fast tracepoints, " | |
12786 | "downloading %d as regular tracepoint"), b->number); | |
12787 | } | |
12788 | else if (b->type == bp_static_tracepoint) | |
12789 | { | |
12790 | /* Only test for support at download time; we may not know | |
12791 | target capabilities at definition time. */ | |
12792 | if (remote_supports_static_tracepoints ()) | |
0fb4aa4b | 12793 | { |
e8ba3115 | 12794 | struct static_tracepoint_marker marker; |
0fb4aa4b | 12795 | |
e8ba3115 | 12796 | if (target_static_tracepoint_marker_at (tpaddr, &marker)) |
3df3a985 PFC |
12797 | { |
12798 | size_left = buf.size () - strlen (buf.data ()); | |
12799 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12800 | size_left, ":S"); | |
12801 | ||
12802 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12803 | error ("%s", err_msg); |
3df3a985 | 12804 | } |
0fb4aa4b | 12805 | else |
e8ba3115 | 12806 | error (_("Static tracepoint not valid during download")); |
0fb4aa4b | 12807 | } |
e8ba3115 YQ |
12808 | else |
12809 | /* Fast tracepoints are functionally identical to regular | |
12810 | tracepoints, so don't take lack of support as a reason | |
12811 | to give up on the trace run. */ | |
12812 | error (_("Target does not support static tracepoints")); | |
12813 | } | |
12814 | /* If the tracepoint has a conditional, make it into an agent | |
12815 | expression and append to the definition. */ | |
12816 | if (loc->cond) | |
12817 | { | |
12818 | /* Only test support at download time, we may not know target | |
12819 | capabilities at definition time. */ | |
12820 | if (remote_supports_cond_tracepoints ()) | |
35b1e5cc | 12821 | { |
3df3a985 PFC |
12822 | agent_expr_up aexpr = gen_eval_for_expr (tpaddr, |
12823 | loc->cond.get ()); | |
12824 | ||
12825 | size_left = buf.size () - strlen (buf.data ()); | |
12826 | ||
12827 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12828 | size_left, ":X%x,", aexpr->len); | |
12829 | ||
12830 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12831 | error ("%s", err_msg); |
3df3a985 PFC |
12832 | |
12833 | size_left = buf.size () - strlen (buf.data ()); | |
12834 | ||
12835 | /* Two bytes to encode each aexpr byte, plus the terminating | |
12836 | null byte. */ | |
12837 | if (aexpr->len * 2 + 1 > size_left) | |
a7f25a84 | 12838 | error ("%s", err_msg); |
3df3a985 PFC |
12839 | |
12840 | pkt = buf.data () + strlen (buf.data ()); | |
12841 | ||
b44ec619 | 12842 | for (int ndx = 0; ndx < aexpr->len; ++ndx) |
e8ba3115 YQ |
12843 | pkt = pack_hex_byte (pkt, aexpr->buf[ndx]); |
12844 | *pkt = '\0'; | |
35b1e5cc | 12845 | } |
e8ba3115 YQ |
12846 | else |
12847 | warning (_("Target does not support conditional tracepoints, " | |
12848 | "ignoring tp %d cond"), b->number); | |
12849 | } | |
35b1e5cc | 12850 | |
d9b3f62e | 12851 | if (b->commands || *default_collect) |
3df3a985 PFC |
12852 | { |
12853 | size_left = buf.size () - strlen (buf.data ()); | |
12854 | ||
12855 | ret = snprintf (buf.data () + strlen (buf.data ()), | |
12856 | size_left, "-"); | |
12857 | ||
12858 | if (ret < 0 || ret >= size_left) | |
a7f25a84 | 12859 | error ("%s", err_msg); |
3df3a985 PFC |
12860 | } |
12861 | ||
12862 | putpkt (buf.data ()); | |
b6bb3468 | 12863 | remote_get_noisy_reply (); |
8d64371b | 12864 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 12865 | error (_("Target does not support tracepoints.")); |
35b1e5cc | 12866 | |
e8ba3115 | 12867 | /* do_single_steps (t); */ |
b44ec619 SM |
12868 | for (auto action_it = tdp_actions.begin (); |
12869 | action_it != tdp_actions.end (); action_it++) | |
e8ba3115 | 12870 | { |
b44ec619 SM |
12871 | QUIT; /* Allow user to bail out with ^C. */ |
12872 | ||
aa6f3694 | 12873 | bool has_more = ((action_it + 1) != tdp_actions.end () |
b44ec619 SM |
12874 | || !stepping_actions.empty ()); |
12875 | ||
3df3a985 PFC |
12876 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%c", |
12877 | b->number, addrbuf, /* address */ | |
12878 | action_it->c_str (), | |
12879 | has_more ? '-' : 0); | |
12880 | ||
12881 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12882 | error ("%s", err_msg); |
3df3a985 PFC |
12883 | |
12884 | putpkt (buf.data ()); | |
b44ec619 | 12885 | remote_get_noisy_reply (); |
8d64371b | 12886 | if (strcmp (rs->buf.data (), "OK")) |
b44ec619 | 12887 | error (_("Error on target while setting tracepoints.")); |
e8ba3115 | 12888 | } |
409873ef | 12889 | |
05abfc39 PFC |
12890 | for (auto action_it = stepping_actions.begin (); |
12891 | action_it != stepping_actions.end (); action_it++) | |
12892 | { | |
12893 | QUIT; /* Allow user to bail out with ^C. */ | |
12894 | ||
12895 | bool is_first = action_it == stepping_actions.begin (); | |
aa6f3694 | 12896 | bool has_more = (action_it + 1) != stepping_actions.end (); |
05abfc39 | 12897 | |
3df3a985 PFC |
12898 | ret = snprintf (buf.data (), buf.size (), "QTDP:-%x:%s:%s%s%s", |
12899 | b->number, addrbuf, /* address */ | |
12900 | is_first ? "S" : "", | |
12901 | action_it->c_str (), | |
12902 | has_more ? "-" : ""); | |
12903 | ||
12904 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12905 | error ("%s", err_msg); |
3df3a985 PFC |
12906 | |
12907 | putpkt (buf.data ()); | |
05abfc39 | 12908 | remote_get_noisy_reply (); |
8d64371b | 12909 | if (strcmp (rs->buf.data (), "OK")) |
05abfc39 PFC |
12910 | error (_("Error on target while setting tracepoints.")); |
12911 | } | |
b44ec619 | 12912 | |
4082afcc | 12913 | if (packet_support (PACKET_TracepointSource) == PACKET_ENABLE) |
e8ba3115 | 12914 | { |
f00aae0f | 12915 | if (b->location != NULL) |
409873ef | 12916 | { |
3df3a985 PFC |
12917 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
12918 | ||
12919 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12920 | error ("%s", err_msg); |
3df3a985 | 12921 | |
f00aae0f | 12922 | encode_source_string (b->number, loc->address, "at", |
d28cd78a | 12923 | event_location_to_string (b->location.get ()), |
3df3a985 PFC |
12924 | buf.data () + strlen (buf.data ()), |
12925 | buf.size () - strlen (buf.data ())); | |
12926 | putpkt (buf.data ()); | |
b6bb3468 | 12927 | remote_get_noisy_reply (); |
8d64371b | 12928 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 | 12929 | warning (_("Target does not support source download.")); |
409873ef | 12930 | } |
e8ba3115 YQ |
12931 | if (b->cond_string) |
12932 | { | |
3df3a985 PFC |
12933 | ret = snprintf (buf.data (), buf.size (), "QTDPsrc:"); |
12934 | ||
12935 | if (ret < 0 || ret >= buf.size ()) | |
a7f25a84 | 12936 | error ("%s", err_msg); |
3df3a985 | 12937 | |
e8ba3115 | 12938 | encode_source_string (b->number, loc->address, |
3df3a985 PFC |
12939 | "cond", b->cond_string, |
12940 | buf.data () + strlen (buf.data ()), | |
12941 | buf.size () - strlen (buf.data ())); | |
12942 | putpkt (buf.data ()); | |
b6bb3468 | 12943 | remote_get_noisy_reply (); |
8d64371b | 12944 | if (strcmp (rs->buf.data (), "OK")) |
e8ba3115 YQ |
12945 | warning (_("Target does not support source download.")); |
12946 | } | |
12947 | remote_download_command_source (b->number, loc->address, | |
12948 | breakpoint_commands (b)); | |
35b1e5cc | 12949 | } |
35b1e5cc SS |
12950 | } |
12951 | ||
57810aa7 | 12952 | bool |
f6ac5f3d | 12953 | remote_target::can_download_tracepoint () |
1e4d1764 | 12954 | { |
1e51243a PA |
12955 | struct remote_state *rs = get_remote_state (); |
12956 | struct trace_status *ts; | |
12957 | int status; | |
12958 | ||
12959 | /* Don't try to install tracepoints until we've relocated our | |
12960 | symbols, and fetched and merged the target's tracepoint list with | |
12961 | ours. */ | |
12962 | if (rs->starting_up) | |
57810aa7 | 12963 | return false; |
1e51243a PA |
12964 | |
12965 | ts = current_trace_status (); | |
f6ac5f3d | 12966 | status = get_trace_status (ts); |
1e4d1764 YQ |
12967 | |
12968 | if (status == -1 || !ts->running_known || !ts->running) | |
57810aa7 | 12969 | return false; |
1e4d1764 YQ |
12970 | |
12971 | /* If we are in a tracing experiment, but remote stub doesn't support | |
12972 | installing tracepoint in trace, we have to return. */ | |
12973 | if (!remote_supports_install_in_trace ()) | |
57810aa7 | 12974 | return false; |
1e4d1764 | 12975 | |
57810aa7 | 12976 | return true; |
1e4d1764 YQ |
12977 | } |
12978 | ||
12979 | ||
f6ac5f3d PA |
12980 | void |
12981 | remote_target::download_trace_state_variable (const trace_state_variable &tsv) | |
35b1e5cc SS |
12982 | { |
12983 | struct remote_state *rs = get_remote_state (); | |
00bf0b85 | 12984 | char *p; |
35b1e5cc | 12985 | |
8d64371b | 12986 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDV:%x:%s:%x:", |
c252925c SM |
12987 | tsv.number, phex ((ULONGEST) tsv.initial_value, 8), |
12988 | tsv.builtin); | |
8d64371b TT |
12989 | p = rs->buf.data () + strlen (rs->buf.data ()); |
12990 | if ((p - rs->buf.data ()) + tsv.name.length () * 2 | |
12991 | >= get_remote_packet_size ()) | |
00bf0b85 | 12992 | error (_("Trace state variable name too long for tsv definition packet")); |
c252925c | 12993 | p += 2 * bin2hex ((gdb_byte *) (tsv.name.data ()), p, tsv.name.length ()); |
00bf0b85 | 12994 | *p++ = '\0'; |
35b1e5cc | 12995 | putpkt (rs->buf); |
b6bb3468 | 12996 | remote_get_noisy_reply (); |
8d64371b | 12997 | if (rs->buf[0] == '\0') |
ad91cd99 | 12998 | error (_("Target does not support this command.")); |
8d64371b | 12999 | if (strcmp (rs->buf.data (), "OK") != 0) |
ad91cd99 | 13000 | error (_("Error on target while downloading trace state variable.")); |
35b1e5cc SS |
13001 | } |
13002 | ||
f6ac5f3d PA |
13003 | void |
13004 | remote_target::enable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13005 | { |
13006 | struct remote_state *rs = get_remote_state (); | |
13007 | char addr_buf[40]; | |
13008 | ||
13009 | sprintf_vma (addr_buf, location->address); | |
8d64371b | 13010 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTEnable:%x:%s", |
bba74b36 | 13011 | location->owner->number, addr_buf); |
d248b706 | 13012 | putpkt (rs->buf); |
b6bb3468 | 13013 | remote_get_noisy_reply (); |
8d64371b | 13014 | if (rs->buf[0] == '\0') |
d248b706 | 13015 | error (_("Target does not support enabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13016 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13017 | error (_("Error on target while enabling tracepoint.")); |
13018 | } | |
13019 | ||
f6ac5f3d PA |
13020 | void |
13021 | remote_target::disable_tracepoint (struct bp_location *location) | |
d248b706 KY |
13022 | { |
13023 | struct remote_state *rs = get_remote_state (); | |
13024 | char addr_buf[40]; | |
13025 | ||
13026 | sprintf_vma (addr_buf, location->address); | |
8d64371b | 13027 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QTDisable:%x:%s", |
bba74b36 | 13028 | location->owner->number, addr_buf); |
d248b706 | 13029 | putpkt (rs->buf); |
b6bb3468 | 13030 | remote_get_noisy_reply (); |
8d64371b | 13031 | if (rs->buf[0] == '\0') |
d248b706 | 13032 | error (_("Target does not support disabling tracepoints while a trace run is ongoing.")); |
8d64371b | 13033 | if (strcmp (rs->buf.data (), "OK") != 0) |
d248b706 KY |
13034 | error (_("Error on target while disabling tracepoint.")); |
13035 | } | |
13036 | ||
f6ac5f3d PA |
13037 | void |
13038 | remote_target::trace_set_readonly_regions () | |
35b1e5cc SS |
13039 | { |
13040 | asection *s; | |
13041 | bfd_size_type size; | |
608bcef2 | 13042 | bfd_vma vma; |
35b1e5cc | 13043 | int anysecs = 0; |
c2fa21f1 | 13044 | int offset = 0; |
35b1e5cc SS |
13045 | |
13046 | if (!exec_bfd) | |
13047 | return; /* No information to give. */ | |
13048 | ||
b6bb3468 PA |
13049 | struct remote_state *rs = get_remote_state (); |
13050 | ||
8d64371b TT |
13051 | strcpy (rs->buf.data (), "QTro"); |
13052 | offset = strlen (rs->buf.data ()); | |
35b1e5cc SS |
13053 | for (s = exec_bfd->sections; s; s = s->next) |
13054 | { | |
13055 | char tmp1[40], tmp2[40]; | |
c2fa21f1 | 13056 | int sec_length; |
35b1e5cc SS |
13057 | |
13058 | if ((s->flags & SEC_LOAD) == 0 || | |
0df8b418 | 13059 | /* (s->flags & SEC_CODE) == 0 || */ |
35b1e5cc SS |
13060 | (s->flags & SEC_READONLY) == 0) |
13061 | continue; | |
13062 | ||
13063 | anysecs = 1; | |
fd361982 AM |
13064 | vma = bfd_section_vma (s); |
13065 | size = bfd_section_size (s); | |
608bcef2 HZ |
13066 | sprintf_vma (tmp1, vma); |
13067 | sprintf_vma (tmp2, vma + size); | |
c2fa21f1 | 13068 | sec_length = 1 + strlen (tmp1) + 1 + strlen (tmp2); |
8d64371b | 13069 | if (offset + sec_length + 1 > rs->buf.size ()) |
c2fa21f1 | 13070 | { |
4082afcc | 13071 | if (packet_support (PACKET_qXfer_traceframe_info) != PACKET_ENABLE) |
864ac8a7 | 13072 | warning (_("\ |
c2fa21f1 HZ |
13073 | Too many sections for read-only sections definition packet.")); |
13074 | break; | |
13075 | } | |
8d64371b | 13076 | xsnprintf (rs->buf.data () + offset, rs->buf.size () - offset, ":%s,%s", |
bba74b36 | 13077 | tmp1, tmp2); |
c2fa21f1 | 13078 | offset += sec_length; |
35b1e5cc SS |
13079 | } |
13080 | if (anysecs) | |
13081 | { | |
b6bb3468 | 13082 | putpkt (rs->buf); |
8d64371b | 13083 | getpkt (&rs->buf, 0); |
35b1e5cc SS |
13084 | } |
13085 | } | |
13086 | ||
f6ac5f3d PA |
13087 | void |
13088 | remote_target::trace_start () | |
35b1e5cc | 13089 | { |
b6bb3468 PA |
13090 | struct remote_state *rs = get_remote_state (); |
13091 | ||
35b1e5cc | 13092 | putpkt ("QTStart"); |
b6bb3468 | 13093 | remote_get_noisy_reply (); |
8d64371b | 13094 | if (rs->buf[0] == '\0') |
ad91cd99 | 13095 | error (_("Target does not support this command.")); |
8d64371b TT |
13096 | if (strcmp (rs->buf.data (), "OK") != 0) |
13097 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13098 | } |
13099 | ||
f6ac5f3d PA |
13100 | int |
13101 | remote_target::get_trace_status (struct trace_status *ts) | |
35b1e5cc | 13102 | { |
953b98d1 | 13103 | /* Initialize it just to avoid a GCC false warning. */ |
f652de6f | 13104 | char *p = NULL; |
0df8b418 | 13105 | /* FIXME we need to get register block size some other way. */ |
00bf0b85 | 13106 | extern int trace_regblock_size; |
bd3eecc3 | 13107 | enum packet_result result; |
b6bb3468 | 13108 | struct remote_state *rs = get_remote_state (); |
bd3eecc3 | 13109 | |
4082afcc | 13110 | if (packet_support (PACKET_qTStatus) == PACKET_DISABLE) |
bd3eecc3 | 13111 | return -1; |
a744cf53 | 13112 | |
5cd63fda | 13113 | trace_regblock_size |
9d6eea31 | 13114 | = rs->get_remote_arch_state (target_gdbarch ())->sizeof_g_packet; |
00bf0b85 | 13115 | |
049dc89b JK |
13116 | putpkt ("qTStatus"); |
13117 | ||
a70b8144 | 13118 | try |
67f41397 | 13119 | { |
b6bb3468 | 13120 | p = remote_get_noisy_reply (); |
67f41397 | 13121 | } |
230d2906 | 13122 | catch (const gdb_exception_error &ex) |
67f41397 | 13123 | { |
598d3636 JK |
13124 | if (ex.error != TARGET_CLOSE_ERROR) |
13125 | { | |
13126 | exception_fprintf (gdb_stderr, ex, "qTStatus: "); | |
13127 | return -1; | |
13128 | } | |
eedc3f4f | 13129 | throw; |
67f41397 | 13130 | } |
00bf0b85 | 13131 | |
bd3eecc3 PA |
13132 | result = packet_ok (p, &remote_protocol_packets[PACKET_qTStatus]); |
13133 | ||
00bf0b85 | 13134 | /* If the remote target doesn't do tracing, flag it. */ |
bd3eecc3 | 13135 | if (result == PACKET_UNKNOWN) |
00bf0b85 | 13136 | return -1; |
35b1e5cc | 13137 | |
00bf0b85 | 13138 | /* We're working with a live target. */ |
f5911ea1 | 13139 | ts->filename = NULL; |
00bf0b85 | 13140 | |
00bf0b85 | 13141 | if (*p++ != 'T') |
8d64371b | 13142 | error (_("Bogus trace status reply from target: %s"), rs->buf.data ()); |
35b1e5cc | 13143 | |
84cebc4a YQ |
13144 | /* Function 'parse_trace_status' sets default value of each field of |
13145 | 'ts' at first, so we don't have to do it here. */ | |
00bf0b85 SS |
13146 | parse_trace_status (p, ts); |
13147 | ||
13148 | return ts->running; | |
35b1e5cc SS |
13149 | } |
13150 | ||
f6ac5f3d PA |
13151 | void |
13152 | remote_target::get_tracepoint_status (struct breakpoint *bp, | |
13153 | struct uploaded_tp *utp) | |
f196051f SS |
13154 | { |
13155 | struct remote_state *rs = get_remote_state (); | |
f196051f SS |
13156 | char *reply; |
13157 | struct bp_location *loc; | |
13158 | struct tracepoint *tp = (struct tracepoint *) bp; | |
bba74b36 | 13159 | size_t size = get_remote_packet_size (); |
f196051f SS |
13160 | |
13161 | if (tp) | |
13162 | { | |
c1fc2657 | 13163 | tp->hit_count = 0; |
f196051f | 13164 | tp->traceframe_usage = 0; |
c1fc2657 | 13165 | for (loc = tp->loc; loc; loc = loc->next) |
f196051f SS |
13166 | { |
13167 | /* If the tracepoint was never downloaded, don't go asking for | |
13168 | any status. */ | |
13169 | if (tp->number_on_target == 0) | |
13170 | continue; | |
8d64371b | 13171 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", tp->number_on_target, |
bba74b36 | 13172 | phex_nz (loc->address, 0)); |
f196051f | 13173 | putpkt (rs->buf); |
b6bb3468 | 13174 | reply = remote_get_noisy_reply (); |
f196051f SS |
13175 | if (reply && *reply) |
13176 | { | |
13177 | if (*reply == 'V') | |
13178 | parse_tracepoint_status (reply + 1, bp, utp); | |
13179 | } | |
13180 | } | |
13181 | } | |
13182 | else if (utp) | |
13183 | { | |
13184 | utp->hit_count = 0; | |
13185 | utp->traceframe_usage = 0; | |
8d64371b | 13186 | xsnprintf (rs->buf.data (), size, "qTP:%x:%s", utp->number, |
bba74b36 | 13187 | phex_nz (utp->addr, 0)); |
f196051f | 13188 | putpkt (rs->buf); |
b6bb3468 | 13189 | reply = remote_get_noisy_reply (); |
f196051f SS |
13190 | if (reply && *reply) |
13191 | { | |
13192 | if (*reply == 'V') | |
13193 | parse_tracepoint_status (reply + 1, bp, utp); | |
13194 | } | |
13195 | } | |
13196 | } | |
13197 | ||
f6ac5f3d PA |
13198 | void |
13199 | remote_target::trace_stop () | |
35b1e5cc | 13200 | { |
b6bb3468 PA |
13201 | struct remote_state *rs = get_remote_state (); |
13202 | ||
35b1e5cc | 13203 | putpkt ("QTStop"); |
b6bb3468 | 13204 | remote_get_noisy_reply (); |
8d64371b | 13205 | if (rs->buf[0] == '\0') |
ad91cd99 | 13206 | error (_("Target does not support this command.")); |
8d64371b TT |
13207 | if (strcmp (rs->buf.data (), "OK") != 0) |
13208 | error (_("Bogus reply from target: %s"), rs->buf.data ()); | |
35b1e5cc SS |
13209 | } |
13210 | ||
f6ac5f3d PA |
13211 | int |
13212 | remote_target::trace_find (enum trace_find_type type, int num, | |
13213 | CORE_ADDR addr1, CORE_ADDR addr2, | |
13214 | int *tpp) | |
35b1e5cc SS |
13215 | { |
13216 | struct remote_state *rs = get_remote_state (); | |
8d64371b | 13217 | char *endbuf = rs->buf.data () + get_remote_packet_size (); |
35b1e5cc SS |
13218 | char *p, *reply; |
13219 | int target_frameno = -1, target_tracept = -1; | |
13220 | ||
e6e4e701 PA |
13221 | /* Lookups other than by absolute frame number depend on the current |
13222 | trace selected, so make sure it is correct on the remote end | |
13223 | first. */ | |
13224 | if (type != tfind_number) | |
13225 | set_remote_traceframe (); | |
13226 | ||
8d64371b | 13227 | p = rs->buf.data (); |
35b1e5cc SS |
13228 | strcpy (p, "QTFrame:"); |
13229 | p = strchr (p, '\0'); | |
13230 | switch (type) | |
13231 | { | |
13232 | case tfind_number: | |
bba74b36 | 13233 | xsnprintf (p, endbuf - p, "%x", num); |
35b1e5cc SS |
13234 | break; |
13235 | case tfind_pc: | |
bba74b36 | 13236 | xsnprintf (p, endbuf - p, "pc:%s", phex_nz (addr1, 0)); |
35b1e5cc SS |
13237 | break; |
13238 | case tfind_tp: | |
bba74b36 | 13239 | xsnprintf (p, endbuf - p, "tdp:%x", num); |
35b1e5cc SS |
13240 | break; |
13241 | case tfind_range: | |
bba74b36 YQ |
13242 | xsnprintf (p, endbuf - p, "range:%s:%s", phex_nz (addr1, 0), |
13243 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13244 | break; |
13245 | case tfind_outside: | |
bba74b36 YQ |
13246 | xsnprintf (p, endbuf - p, "outside:%s:%s", phex_nz (addr1, 0), |
13247 | phex_nz (addr2, 0)); | |
35b1e5cc SS |
13248 | break; |
13249 | default: | |
9b20d036 | 13250 | error (_("Unknown trace find type %d"), type); |
35b1e5cc SS |
13251 | } |
13252 | ||
13253 | putpkt (rs->buf); | |
b6bb3468 | 13254 | reply = remote_get_noisy_reply (); |
ad91cd99 PA |
13255 | if (*reply == '\0') |
13256 | error (_("Target does not support this command.")); | |
35b1e5cc SS |
13257 | |
13258 | while (reply && *reply) | |
13259 | switch (*reply) | |
13260 | { | |
13261 | case 'F': | |
f197e0f1 VP |
13262 | p = ++reply; |
13263 | target_frameno = (int) strtol (p, &reply, 16); | |
13264 | if (reply == p) | |
13265 | error (_("Unable to parse trace frame number")); | |
e6e4e701 PA |
13266 | /* Don't update our remote traceframe number cache on failure |
13267 | to select a remote traceframe. */ | |
f197e0f1 VP |
13268 | if (target_frameno == -1) |
13269 | return -1; | |
35b1e5cc SS |
13270 | break; |
13271 | case 'T': | |
f197e0f1 VP |
13272 | p = ++reply; |
13273 | target_tracept = (int) strtol (p, &reply, 16); | |
13274 | if (reply == p) | |
13275 | error (_("Unable to parse tracepoint number")); | |
35b1e5cc SS |
13276 | break; |
13277 | case 'O': /* "OK"? */ | |
13278 | if (reply[1] == 'K' && reply[2] == '\0') | |
13279 | reply += 2; | |
13280 | else | |
13281 | error (_("Bogus reply from target: %s"), reply); | |
13282 | break; | |
13283 | default: | |
13284 | error (_("Bogus reply from target: %s"), reply); | |
13285 | } | |
13286 | if (tpp) | |
13287 | *tpp = target_tracept; | |
e6e4e701 | 13288 | |
262e1174 | 13289 | rs->remote_traceframe_number = target_frameno; |
35b1e5cc SS |
13290 | return target_frameno; |
13291 | } | |
13292 | ||
57810aa7 | 13293 | bool |
f6ac5f3d | 13294 | remote_target::get_trace_state_variable_value (int tsvnum, LONGEST *val) |
35b1e5cc SS |
13295 | { |
13296 | struct remote_state *rs = get_remote_state (); | |
13297 | char *reply; | |
13298 | ULONGEST uval; | |
13299 | ||
e6e4e701 PA |
13300 | set_remote_traceframe (); |
13301 | ||
8d64371b | 13302 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTV:%x", tsvnum); |
35b1e5cc | 13303 | putpkt (rs->buf); |
b6bb3468 | 13304 | reply = remote_get_noisy_reply (); |
35b1e5cc SS |
13305 | if (reply && *reply) |
13306 | { | |
13307 | if (*reply == 'V') | |
13308 | { | |
13309 | unpack_varlen_hex (reply + 1, &uval); | |
13310 | *val = (LONGEST) uval; | |
57810aa7 | 13311 | return true; |
35b1e5cc SS |
13312 | } |
13313 | } | |
57810aa7 | 13314 | return false; |
35b1e5cc SS |
13315 | } |
13316 | ||
f6ac5f3d PA |
13317 | int |
13318 | remote_target::save_trace_data (const char *filename) | |
00bf0b85 SS |
13319 | { |
13320 | struct remote_state *rs = get_remote_state (); | |
13321 | char *p, *reply; | |
13322 | ||
8d64371b | 13323 | p = rs->buf.data (); |
00bf0b85 SS |
13324 | strcpy (p, "QTSave:"); |
13325 | p += strlen (p); | |
8d64371b TT |
13326 | if ((p - rs->buf.data ()) + strlen (filename) * 2 |
13327 | >= get_remote_packet_size ()) | |
00bf0b85 | 13328 | error (_("Remote file name too long for trace save packet")); |
9f1b45b0 | 13329 | p += 2 * bin2hex ((gdb_byte *) filename, p, strlen (filename)); |
00bf0b85 SS |
13330 | *p++ = '\0'; |
13331 | putpkt (rs->buf); | |
b6bb3468 | 13332 | reply = remote_get_noisy_reply (); |
d6c5869f | 13333 | if (*reply == '\0') |
ad91cd99 PA |
13334 | error (_("Target does not support this command.")); |
13335 | if (strcmp (reply, "OK") != 0) | |
13336 | error (_("Bogus reply from target: %s"), reply); | |
00bf0b85 SS |
13337 | return 0; |
13338 | } | |
13339 | ||
13340 | /* This is basically a memory transfer, but needs to be its own packet | |
13341 | because we don't know how the target actually organizes its trace | |
13342 | memory, plus we want to be able to ask for as much as possible, but | |
13343 | not be unhappy if we don't get as much as we ask for. */ | |
13344 | ||
f6ac5f3d PA |
13345 | LONGEST |
13346 | remote_target::get_raw_trace_data (gdb_byte *buf, ULONGEST offset, LONGEST len) | |
00bf0b85 SS |
13347 | { |
13348 | struct remote_state *rs = get_remote_state (); | |
13349 | char *reply; | |
13350 | char *p; | |
13351 | int rslt; | |
13352 | ||
8d64371b | 13353 | p = rs->buf.data (); |
00bf0b85 SS |
13354 | strcpy (p, "qTBuffer:"); |
13355 | p += strlen (p); | |
13356 | p += hexnumstr (p, offset); | |
13357 | *p++ = ','; | |
13358 | p += hexnumstr (p, len); | |
13359 | *p++ = '\0'; | |
13360 | ||
13361 | putpkt (rs->buf); | |
b6bb3468 | 13362 | reply = remote_get_noisy_reply (); |
00bf0b85 SS |
13363 | if (reply && *reply) |
13364 | { | |
13365 | /* 'l' by itself means we're at the end of the buffer and | |
13366 | there is nothing more to get. */ | |
13367 | if (*reply == 'l') | |
13368 | return 0; | |
13369 | ||
13370 | /* Convert the reply into binary. Limit the number of bytes to | |
13371 | convert according to our passed-in buffer size, rather than | |
13372 | what was returned in the packet; if the target is | |
13373 | unexpectedly generous and gives us a bigger reply than we | |
13374 | asked for, we don't want to crash. */ | |
b6bb3468 | 13375 | rslt = hex2bin (reply, buf, len); |
00bf0b85 SS |
13376 | return rslt; |
13377 | } | |
13378 | ||
13379 | /* Something went wrong, flag as an error. */ | |
13380 | return -1; | |
13381 | } | |
13382 | ||
f6ac5f3d PA |
13383 | void |
13384 | remote_target::set_disconnected_tracing (int val) | |
35b1e5cc SS |
13385 | { |
13386 | struct remote_state *rs = get_remote_state (); | |
13387 | ||
4082afcc | 13388 | if (packet_support (PACKET_DisconnectedTracing_feature) == PACKET_ENABLE) |
33da3f1c | 13389 | { |
ad91cd99 PA |
13390 | char *reply; |
13391 | ||
8d64371b TT |
13392 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13393 | "QTDisconnected:%x", val); | |
33da3f1c | 13394 | putpkt (rs->buf); |
b6bb3468 | 13395 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13396 | if (*reply == '\0') |
33da3f1c | 13397 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13398 | if (strcmp (reply, "OK") != 0) |
13399 | error (_("Bogus reply from target: %s"), reply); | |
33da3f1c SS |
13400 | } |
13401 | else if (val) | |
13402 | warning (_("Target does not support disconnected tracing.")); | |
35b1e5cc SS |
13403 | } |
13404 | ||
f6ac5f3d PA |
13405 | int |
13406 | remote_target::core_of_thread (ptid_t ptid) | |
dc146f7c VP |
13407 | { |
13408 | struct thread_info *info = find_thread_ptid (ptid); | |
a744cf53 | 13409 | |
7aabaf9d SM |
13410 | if (info != NULL && info->priv != NULL) |
13411 | return get_remote_thread_info (info)->core; | |
13412 | ||
dc146f7c VP |
13413 | return -1; |
13414 | } | |
13415 | ||
f6ac5f3d PA |
13416 | void |
13417 | remote_target::set_circular_trace_buffer (int val) | |
4daf5ac0 SS |
13418 | { |
13419 | struct remote_state *rs = get_remote_state (); | |
ad91cd99 | 13420 | char *reply; |
4daf5ac0 | 13421 | |
8d64371b TT |
13422 | xsnprintf (rs->buf.data (), get_remote_packet_size (), |
13423 | "QTBuffer:circular:%x", val); | |
4daf5ac0 | 13424 | putpkt (rs->buf); |
b6bb3468 | 13425 | reply = remote_get_noisy_reply (); |
ad91cd99 | 13426 | if (*reply == '\0') |
4daf5ac0 | 13427 | error (_("Target does not support this command.")); |
ad91cd99 PA |
13428 | if (strcmp (reply, "OK") != 0) |
13429 | error (_("Bogus reply from target: %s"), reply); | |
4daf5ac0 SS |
13430 | } |
13431 | ||
f6ac5f3d PA |
13432 | traceframe_info_up |
13433 | remote_target::traceframe_info () | |
b3b9301e | 13434 | { |
9018be22 | 13435 | gdb::optional<gdb::char_vector> text |
8b88a78e | 13436 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_TRACEFRAME_INFO, |
b7b030ad | 13437 | NULL); |
9018be22 SM |
13438 | if (text) |
13439 | return parse_traceframe_info (text->data ()); | |
b3b9301e PA |
13440 | |
13441 | return NULL; | |
13442 | } | |
13443 | ||
405f8e94 SS |
13444 | /* Handle the qTMinFTPILen packet. Returns the minimum length of |
13445 | instruction on which a fast tracepoint may be placed. Returns -1 | |
13446 | if the packet is not supported, and 0 if the minimum instruction | |
13447 | length is unknown. */ | |
13448 | ||
f6ac5f3d PA |
13449 | int |
13450 | remote_target::get_min_fast_tracepoint_insn_len () | |
405f8e94 SS |
13451 | { |
13452 | struct remote_state *rs = get_remote_state (); | |
13453 | char *reply; | |
13454 | ||
e886a173 PA |
13455 | /* If we're not debugging a process yet, the IPA can't be |
13456 | loaded. */ | |
13457 | if (!target_has_execution) | |
13458 | return 0; | |
13459 | ||
13460 | /* Make sure the remote is pointing at the right process. */ | |
13461 | set_general_process (); | |
13462 | ||
8d64371b | 13463 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "qTMinFTPILen"); |
405f8e94 | 13464 | putpkt (rs->buf); |
b6bb3468 | 13465 | reply = remote_get_noisy_reply (); |
405f8e94 SS |
13466 | if (*reply == '\0') |
13467 | return -1; | |
13468 | else | |
13469 | { | |
13470 | ULONGEST min_insn_len; | |
13471 | ||
13472 | unpack_varlen_hex (reply, &min_insn_len); | |
13473 | ||
13474 | return (int) min_insn_len; | |
13475 | } | |
13476 | } | |
13477 | ||
f6ac5f3d PA |
13478 | void |
13479 | remote_target::set_trace_buffer_size (LONGEST val) | |
f6f899bf | 13480 | { |
4082afcc | 13481 | if (packet_support (PACKET_QTBuffer_size) != PACKET_DISABLE) |
f6f899bf HAQ |
13482 | { |
13483 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13484 | char *buf = rs->buf.data (); |
13485 | char *endbuf = buf + get_remote_packet_size (); | |
f6f899bf HAQ |
13486 | enum packet_result result; |
13487 | ||
13488 | gdb_assert (val >= 0 || val == -1); | |
13489 | buf += xsnprintf (buf, endbuf - buf, "QTBuffer:size:"); | |
13490 | /* Send -1 as literal "-1" to avoid host size dependency. */ | |
13491 | if (val < 0) | |
13492 | { | |
13493 | *buf++ = '-'; | |
13494 | buf += hexnumstr (buf, (ULONGEST) -val); | |
13495 | } | |
13496 | else | |
13497 | buf += hexnumstr (buf, (ULONGEST) val); | |
13498 | ||
13499 | putpkt (rs->buf); | |
b6bb3468 | 13500 | remote_get_noisy_reply (); |
f6f899bf HAQ |
13501 | result = packet_ok (rs->buf, |
13502 | &remote_protocol_packets[PACKET_QTBuffer_size]); | |
13503 | ||
13504 | if (result != PACKET_OK) | |
8d64371b | 13505 | warning (_("Bogus reply from target: %s"), rs->buf.data ()); |
f6f899bf HAQ |
13506 | } |
13507 | } | |
13508 | ||
57810aa7 | 13509 | bool |
f6ac5f3d PA |
13510 | remote_target::set_trace_notes (const char *user, const char *notes, |
13511 | const char *stop_notes) | |
f196051f SS |
13512 | { |
13513 | struct remote_state *rs = get_remote_state (); | |
13514 | char *reply; | |
8d64371b TT |
13515 | char *buf = rs->buf.data (); |
13516 | char *endbuf = buf + get_remote_packet_size (); | |
f196051f SS |
13517 | int nbytes; |
13518 | ||
13519 | buf += xsnprintf (buf, endbuf - buf, "QTNotes:"); | |
13520 | if (user) | |
13521 | { | |
13522 | buf += xsnprintf (buf, endbuf - buf, "user:"); | |
9f1b45b0 | 13523 | nbytes = bin2hex ((gdb_byte *) user, buf, strlen (user)); |
f196051f SS |
13524 | buf += 2 * nbytes; |
13525 | *buf++ = ';'; | |
13526 | } | |
13527 | if (notes) | |
13528 | { | |
13529 | buf += xsnprintf (buf, endbuf - buf, "notes:"); | |
9f1b45b0 | 13530 | nbytes = bin2hex ((gdb_byte *) notes, buf, strlen (notes)); |
f196051f SS |
13531 | buf += 2 * nbytes; |
13532 | *buf++ = ';'; | |
13533 | } | |
13534 | if (stop_notes) | |
13535 | { | |
13536 | buf += xsnprintf (buf, endbuf - buf, "tstop:"); | |
9f1b45b0 | 13537 | nbytes = bin2hex ((gdb_byte *) stop_notes, buf, strlen (stop_notes)); |
f196051f SS |
13538 | buf += 2 * nbytes; |
13539 | *buf++ = ';'; | |
13540 | } | |
13541 | /* Ensure the buffer is terminated. */ | |
13542 | *buf = '\0'; | |
13543 | ||
13544 | putpkt (rs->buf); | |
b6bb3468 | 13545 | reply = remote_get_noisy_reply (); |
f196051f | 13546 | if (*reply == '\0') |
57810aa7 | 13547 | return false; |
f196051f SS |
13548 | |
13549 | if (strcmp (reply, "OK") != 0) | |
13550 | error (_("Bogus reply from target: %s"), reply); | |
13551 | ||
57810aa7 | 13552 | return true; |
f196051f SS |
13553 | } |
13554 | ||
57810aa7 PA |
13555 | bool |
13556 | remote_target::use_agent (bool use) | |
d1feda86 | 13557 | { |
4082afcc | 13558 | if (packet_support (PACKET_QAgent) != PACKET_DISABLE) |
d1feda86 YQ |
13559 | { |
13560 | struct remote_state *rs = get_remote_state (); | |
13561 | ||
13562 | /* If the stub supports QAgent. */ | |
8d64371b | 13563 | xsnprintf (rs->buf.data (), get_remote_packet_size (), "QAgent:%d", use); |
d1feda86 | 13564 | putpkt (rs->buf); |
8d64371b | 13565 | getpkt (&rs->buf, 0); |
d1feda86 | 13566 | |
8d64371b | 13567 | if (strcmp (rs->buf.data (), "OK") == 0) |
d1feda86 | 13568 | { |
f6ac5f3d | 13569 | ::use_agent = use; |
57810aa7 | 13570 | return true; |
d1feda86 YQ |
13571 | } |
13572 | } | |
13573 | ||
57810aa7 | 13574 | return false; |
d1feda86 YQ |
13575 | } |
13576 | ||
57810aa7 | 13577 | bool |
f6ac5f3d | 13578 | remote_target::can_use_agent () |
d1feda86 | 13579 | { |
4082afcc | 13580 | return (packet_support (PACKET_QAgent) != PACKET_DISABLE); |
d1feda86 YQ |
13581 | } |
13582 | ||
9accd112 MM |
13583 | struct btrace_target_info |
13584 | { | |
13585 | /* The ptid of the traced thread. */ | |
13586 | ptid_t ptid; | |
f4abbc16 MM |
13587 | |
13588 | /* The obtained branch trace configuration. */ | |
13589 | struct btrace_config conf; | |
9accd112 MM |
13590 | }; |
13591 | ||
f4abbc16 MM |
13592 | /* Reset our idea of our target's btrace configuration. */ |
13593 | ||
13594 | static void | |
6b8edb51 | 13595 | remote_btrace_reset (remote_state *rs) |
f4abbc16 | 13596 | { |
f4abbc16 MM |
13597 | memset (&rs->btrace_config, 0, sizeof (rs->btrace_config)); |
13598 | } | |
13599 | ||
f4abbc16 MM |
13600 | /* Synchronize the configuration with the target. */ |
13601 | ||
6b8edb51 PA |
13602 | void |
13603 | remote_target::btrace_sync_conf (const btrace_config *conf) | |
f4abbc16 | 13604 | { |
d33501a5 MM |
13605 | struct packet_config *packet; |
13606 | struct remote_state *rs; | |
13607 | char *buf, *pos, *endbuf; | |
13608 | ||
13609 | rs = get_remote_state (); | |
8d64371b | 13610 | buf = rs->buf.data (); |
d33501a5 MM |
13611 | endbuf = buf + get_remote_packet_size (); |
13612 | ||
13613 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_bts_size]; | |
13614 | if (packet_config_support (packet) == PACKET_ENABLE | |
13615 | && conf->bts.size != rs->btrace_config.bts.size) | |
13616 | { | |
13617 | pos = buf; | |
13618 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13619 | conf->bts.size); | |
13620 | ||
13621 | putpkt (buf); | |
8d64371b | 13622 | getpkt (&rs->buf, 0); |
d33501a5 MM |
13623 | |
13624 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13625 | { | |
13626 | if (buf[0] == 'E' && buf[1] == '.') | |
13627 | error (_("Failed to configure the BTS buffer size: %s"), buf + 2); | |
13628 | else | |
13629 | error (_("Failed to configure the BTS buffer size.")); | |
13630 | } | |
13631 | ||
13632 | rs->btrace_config.bts.size = conf->bts.size; | |
13633 | } | |
b20a6524 MM |
13634 | |
13635 | packet = &remote_protocol_packets[PACKET_Qbtrace_conf_pt_size]; | |
13636 | if (packet_config_support (packet) == PACKET_ENABLE | |
13637 | && conf->pt.size != rs->btrace_config.pt.size) | |
13638 | { | |
13639 | pos = buf; | |
13640 | pos += xsnprintf (pos, endbuf - pos, "%s=0x%x", packet->name, | |
13641 | conf->pt.size); | |
13642 | ||
13643 | putpkt (buf); | |
8d64371b | 13644 | getpkt (&rs->buf, 0); |
b20a6524 MM |
13645 | |
13646 | if (packet_ok (buf, packet) == PACKET_ERROR) | |
13647 | { | |
13648 | if (buf[0] == 'E' && buf[1] == '.') | |
13649 | error (_("Failed to configure the trace buffer size: %s"), buf + 2); | |
13650 | else | |
13651 | error (_("Failed to configure the trace buffer size.")); | |
13652 | } | |
13653 | ||
13654 | rs->btrace_config.pt.size = conf->pt.size; | |
13655 | } | |
f4abbc16 MM |
13656 | } |
13657 | ||
13658 | /* Read the current thread's btrace configuration from the target and | |
13659 | store it into CONF. */ | |
13660 | ||
13661 | static void | |
13662 | btrace_read_config (struct btrace_config *conf) | |
13663 | { | |
9018be22 | 13664 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 13665 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE_CONF, ""); |
9018be22 SM |
13666 | if (xml) |
13667 | parse_xml_btrace_conf (conf, xml->data ()); | |
f4abbc16 MM |
13668 | } |
13669 | ||
c0272db5 TW |
13670 | /* Maybe reopen target btrace. */ |
13671 | ||
6b8edb51 PA |
13672 | void |
13673 | remote_target::remote_btrace_maybe_reopen () | |
c0272db5 TW |
13674 | { |
13675 | struct remote_state *rs = get_remote_state (); | |
c0272db5 | 13676 | int btrace_target_pushed = 0; |
15766370 | 13677 | #if !defined (HAVE_LIBIPT) |
c0272db5 | 13678 | int warned = 0; |
15766370 | 13679 | #endif |
c0272db5 | 13680 | |
aedbe3bb CM |
13681 | /* Don't bother walking the entirety of the remote thread list when |
13682 | we know the feature isn't supported by the remote. */ | |
13683 | if (packet_support (PACKET_qXfer_btrace_conf) != PACKET_ENABLE) | |
13684 | return; | |
13685 | ||
5ed8105e PA |
13686 | scoped_restore_current_thread restore_thread; |
13687 | ||
08036331 | 13688 | for (thread_info *tp : all_non_exited_threads ()) |
c0272db5 TW |
13689 | { |
13690 | set_general_thread (tp->ptid); | |
13691 | ||
13692 | memset (&rs->btrace_config, 0x00, sizeof (struct btrace_config)); | |
13693 | btrace_read_config (&rs->btrace_config); | |
13694 | ||
13695 | if (rs->btrace_config.format == BTRACE_FORMAT_NONE) | |
13696 | continue; | |
13697 | ||
13698 | #if !defined (HAVE_LIBIPT) | |
13699 | if (rs->btrace_config.format == BTRACE_FORMAT_PT) | |
13700 | { | |
13701 | if (!warned) | |
13702 | { | |
13703 | warned = 1; | |
c4e12631 MM |
13704 | warning (_("Target is recording using Intel Processor Trace " |
13705 | "but support was disabled at compile time.")); | |
c0272db5 TW |
13706 | } |
13707 | ||
13708 | continue; | |
13709 | } | |
13710 | #endif /* !defined (HAVE_LIBIPT) */ | |
13711 | ||
13712 | /* Push target, once, but before anything else happens. This way our | |
13713 | changes to the threads will be cleaned up by unpushing the target | |
13714 | in case btrace_read_config () throws. */ | |
13715 | if (!btrace_target_pushed) | |
13716 | { | |
13717 | btrace_target_pushed = 1; | |
13718 | record_btrace_push_target (); | |
13719 | printf_filtered (_("Target is recording using %s.\n"), | |
13720 | btrace_format_string (rs->btrace_config.format)); | |
13721 | } | |
13722 | ||
13723 | tp->btrace.target = XCNEW (struct btrace_target_info); | |
13724 | tp->btrace.target->ptid = tp->ptid; | |
13725 | tp->btrace.target->conf = rs->btrace_config; | |
13726 | } | |
c0272db5 TW |
13727 | } |
13728 | ||
9accd112 MM |
13729 | /* Enable branch tracing. */ |
13730 | ||
f6ac5f3d PA |
13731 | struct btrace_target_info * |
13732 | remote_target::enable_btrace (ptid_t ptid, const struct btrace_config *conf) | |
9accd112 MM |
13733 | { |
13734 | struct btrace_target_info *tinfo = NULL; | |
b20a6524 | 13735 | struct packet_config *packet = NULL; |
9accd112 | 13736 | struct remote_state *rs = get_remote_state (); |
8d64371b TT |
13737 | char *buf = rs->buf.data (); |
13738 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 13739 | |
b20a6524 MM |
13740 | switch (conf->format) |
13741 | { | |
13742 | case BTRACE_FORMAT_BTS: | |
13743 | packet = &remote_protocol_packets[PACKET_Qbtrace_bts]; | |
13744 | break; | |
13745 | ||
13746 | case BTRACE_FORMAT_PT: | |
13747 | packet = &remote_protocol_packets[PACKET_Qbtrace_pt]; | |
13748 | break; | |
13749 | } | |
13750 | ||
13751 | if (packet == NULL || packet_config_support (packet) != PACKET_ENABLE) | |
9accd112 MM |
13752 | error (_("Target does not support branch tracing.")); |
13753 | ||
f4abbc16 MM |
13754 | btrace_sync_conf (conf); |
13755 | ||
9accd112 MM |
13756 | set_general_thread (ptid); |
13757 | ||
13758 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13759 | putpkt (rs->buf); | |
8d64371b | 13760 | getpkt (&rs->buf, 0); |
9accd112 MM |
13761 | |
13762 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13763 | { | |
13764 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13765 | error (_("Could not enable branch tracing for %s: %s"), | |
a068643d | 13766 | target_pid_to_str (ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
13767 | else |
13768 | error (_("Could not enable branch tracing for %s."), | |
a068643d | 13769 | target_pid_to_str (ptid).c_str ()); |
9accd112 MM |
13770 | } |
13771 | ||
8d749320 | 13772 | tinfo = XCNEW (struct btrace_target_info); |
9accd112 MM |
13773 | tinfo->ptid = ptid; |
13774 | ||
f4abbc16 MM |
13775 | /* If we fail to read the configuration, we lose some information, but the |
13776 | tracing itself is not impacted. */ | |
a70b8144 | 13777 | try |
492d29ea PA |
13778 | { |
13779 | btrace_read_config (&tinfo->conf); | |
13780 | } | |
230d2906 | 13781 | catch (const gdb_exception_error &err) |
492d29ea PA |
13782 | { |
13783 | if (err.message != NULL) | |
3d6e9d23 | 13784 | warning ("%s", err.what ()); |
492d29ea | 13785 | } |
f4abbc16 | 13786 | |
9accd112 MM |
13787 | return tinfo; |
13788 | } | |
13789 | ||
13790 | /* Disable branch tracing. */ | |
13791 | ||
f6ac5f3d PA |
13792 | void |
13793 | remote_target::disable_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13794 | { |
13795 | struct packet_config *packet = &remote_protocol_packets[PACKET_Qbtrace_off]; | |
13796 | struct remote_state *rs = get_remote_state (); | |
8d64371b TT |
13797 | char *buf = rs->buf.data (); |
13798 | char *endbuf = buf + get_remote_packet_size (); | |
9accd112 | 13799 | |
4082afcc | 13800 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13801 | error (_("Target does not support branch tracing.")); |
13802 | ||
13803 | set_general_thread (tinfo->ptid); | |
13804 | ||
13805 | buf += xsnprintf (buf, endbuf - buf, "%s", packet->name); | |
13806 | putpkt (rs->buf); | |
8d64371b | 13807 | getpkt (&rs->buf, 0); |
9accd112 MM |
13808 | |
13809 | if (packet_ok (rs->buf, packet) == PACKET_ERROR) | |
13810 | { | |
13811 | if (rs->buf[0] == 'E' && rs->buf[1] == '.') | |
13812 | error (_("Could not disable branch tracing for %s: %s"), | |
a068643d | 13813 | target_pid_to_str (tinfo->ptid).c_str (), &rs->buf[2]); |
9accd112 MM |
13814 | else |
13815 | error (_("Could not disable branch tracing for %s."), | |
a068643d | 13816 | target_pid_to_str (tinfo->ptid).c_str ()); |
9accd112 MM |
13817 | } |
13818 | ||
13819 | xfree (tinfo); | |
13820 | } | |
13821 | ||
13822 | /* Teardown branch tracing. */ | |
13823 | ||
f6ac5f3d PA |
13824 | void |
13825 | remote_target::teardown_btrace (struct btrace_target_info *tinfo) | |
9accd112 MM |
13826 | { |
13827 | /* We must not talk to the target during teardown. */ | |
13828 | xfree (tinfo); | |
13829 | } | |
13830 | ||
13831 | /* Read the branch trace. */ | |
13832 | ||
f6ac5f3d PA |
13833 | enum btrace_error |
13834 | remote_target::read_btrace (struct btrace_data *btrace, | |
13835 | struct btrace_target_info *tinfo, | |
13836 | enum btrace_read_type type) | |
9accd112 MM |
13837 | { |
13838 | struct packet_config *packet = &remote_protocol_packets[PACKET_qXfer_btrace]; | |
9accd112 | 13839 | const char *annex; |
9accd112 | 13840 | |
4082afcc | 13841 | if (packet_config_support (packet) != PACKET_ENABLE) |
9accd112 MM |
13842 | error (_("Target does not support branch tracing.")); |
13843 | ||
13844 | #if !defined(HAVE_LIBEXPAT) | |
13845 | error (_("Cannot process branch tracing result. XML parsing not supported.")); | |
13846 | #endif | |
13847 | ||
13848 | switch (type) | |
13849 | { | |
864089d2 | 13850 | case BTRACE_READ_ALL: |
9accd112 MM |
13851 | annex = "all"; |
13852 | break; | |
864089d2 | 13853 | case BTRACE_READ_NEW: |
9accd112 MM |
13854 | annex = "new"; |
13855 | break; | |
969c39fb MM |
13856 | case BTRACE_READ_DELTA: |
13857 | annex = "delta"; | |
13858 | break; | |
9accd112 MM |
13859 | default: |
13860 | internal_error (__FILE__, __LINE__, | |
13861 | _("Bad branch tracing read type: %u."), | |
13862 | (unsigned int) type); | |
13863 | } | |
13864 | ||
9018be22 | 13865 | gdb::optional<gdb::char_vector> xml |
8b88a78e | 13866 | = target_read_stralloc (current_top_target (), TARGET_OBJECT_BTRACE, annex); |
9018be22 | 13867 | if (!xml) |
969c39fb | 13868 | return BTRACE_ERR_UNKNOWN; |
9accd112 | 13869 | |
9018be22 | 13870 | parse_xml_btrace (btrace, xml->data ()); |
9accd112 | 13871 | |
969c39fb | 13872 | return BTRACE_ERR_NONE; |
9accd112 MM |
13873 | } |
13874 | ||
f6ac5f3d PA |
13875 | const struct btrace_config * |
13876 | remote_target::btrace_conf (const struct btrace_target_info *tinfo) | |
f4abbc16 MM |
13877 | { |
13878 | return &tinfo->conf; | |
13879 | } | |
13880 | ||
57810aa7 | 13881 | bool |
f6ac5f3d | 13882 | remote_target::augmented_libraries_svr4_read () |
ced63ec0 | 13883 | { |
4082afcc PA |
13884 | return (packet_support (PACKET_augmented_libraries_svr4_read_feature) |
13885 | == PACKET_ENABLE); | |
ced63ec0 GB |
13886 | } |
13887 | ||
9dd130a0 TT |
13888 | /* Implementation of to_load. */ |
13889 | ||
f6ac5f3d PA |
13890 | void |
13891 | remote_target::load (const char *name, int from_tty) | |
9dd130a0 TT |
13892 | { |
13893 | generic_load (name, from_tty); | |
13894 | } | |
13895 | ||
c78fa86a GB |
13896 | /* Accepts an integer PID; returns a string representing a file that |
13897 | can be opened on the remote side to get the symbols for the child | |
13898 | process. Returns NULL if the operation is not supported. */ | |
13899 | ||
f6ac5f3d PA |
13900 | char * |
13901 | remote_target::pid_to_exec_file (int pid) | |
c78fa86a | 13902 | { |
9018be22 | 13903 | static gdb::optional<gdb::char_vector> filename; |
835205d0 GB |
13904 | struct inferior *inf; |
13905 | char *annex = NULL; | |
c78fa86a GB |
13906 | |
13907 | if (packet_support (PACKET_qXfer_exec_file) != PACKET_ENABLE) | |
13908 | return NULL; | |
13909 | ||
835205d0 GB |
13910 | inf = find_inferior_pid (pid); |
13911 | if (inf == NULL) | |
13912 | internal_error (__FILE__, __LINE__, | |
13913 | _("not currently attached to process %d"), pid); | |
13914 | ||
13915 | if (!inf->fake_pid_p) | |
13916 | { | |
13917 | const int annex_size = 9; | |
13918 | ||
224c3ddb | 13919 | annex = (char *) alloca (annex_size); |
835205d0 GB |
13920 | xsnprintf (annex, annex_size, "%x", pid); |
13921 | } | |
13922 | ||
8b88a78e | 13923 | filename = target_read_stralloc (current_top_target (), |
c78fa86a GB |
13924 | TARGET_OBJECT_EXEC_FILE, annex); |
13925 | ||
9018be22 | 13926 | return filename ? filename->data () : nullptr; |
c78fa86a GB |
13927 | } |
13928 | ||
750ce8d1 YQ |
13929 | /* Implement the to_can_do_single_step target_ops method. */ |
13930 | ||
f6ac5f3d PA |
13931 | int |
13932 | remote_target::can_do_single_step () | |
750ce8d1 YQ |
13933 | { |
13934 | /* We can only tell whether target supports single step or not by | |
13935 | supported s and S vCont actions if the stub supports vContSupported | |
13936 | feature. If the stub doesn't support vContSupported feature, | |
13937 | we have conservatively to think target doesn't supports single | |
13938 | step. */ | |
13939 | if (packet_support (PACKET_vContSupported) == PACKET_ENABLE) | |
13940 | { | |
13941 | struct remote_state *rs = get_remote_state (); | |
13942 | ||
13943 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
6b8edb51 | 13944 | remote_vcont_probe (); |
750ce8d1 YQ |
13945 | |
13946 | return rs->supports_vCont.s && rs->supports_vCont.S; | |
13947 | } | |
13948 | else | |
13949 | return 0; | |
13950 | } | |
13951 | ||
3a00c802 PA |
13952 | /* Implementation of the to_execution_direction method for the remote |
13953 | target. */ | |
13954 | ||
f6ac5f3d PA |
13955 | enum exec_direction_kind |
13956 | remote_target::execution_direction () | |
3a00c802 PA |
13957 | { |
13958 | struct remote_state *rs = get_remote_state (); | |
13959 | ||
13960 | return rs->last_resume_exec_dir; | |
13961 | } | |
13962 | ||
f6327dcb KB |
13963 | /* Return pointer to the thread_info struct which corresponds to |
13964 | THREAD_HANDLE (having length HANDLE_LEN). */ | |
13965 | ||
f6ac5f3d PA |
13966 | thread_info * |
13967 | remote_target::thread_handle_to_thread_info (const gdb_byte *thread_handle, | |
13968 | int handle_len, | |
13969 | inferior *inf) | |
f6327dcb | 13970 | { |
08036331 | 13971 | for (thread_info *tp : all_non_exited_threads ()) |
f6327dcb | 13972 | { |
7aabaf9d | 13973 | remote_thread_info *priv = get_remote_thread_info (tp); |
f6327dcb KB |
13974 | |
13975 | if (tp->inf == inf && priv != NULL) | |
13976 | { | |
7aabaf9d | 13977 | if (handle_len != priv->thread_handle.size ()) |
f6327dcb | 13978 | error (_("Thread handle size mismatch: %d vs %zu (from remote)"), |
7aabaf9d SM |
13979 | handle_len, priv->thread_handle.size ()); |
13980 | if (memcmp (thread_handle, priv->thread_handle.data (), | |
f6327dcb KB |
13981 | handle_len) == 0) |
13982 | return tp; | |
13983 | } | |
13984 | } | |
13985 | ||
13986 | return NULL; | |
13987 | } | |
13988 | ||
3d6c6204 KB |
13989 | gdb::byte_vector |
13990 | remote_target::thread_info_to_thread_handle (struct thread_info *tp) | |
13991 | { | |
13992 | remote_thread_info *priv = get_remote_thread_info (tp); | |
13993 | return priv->thread_handle; | |
13994 | } | |
13995 | ||
57810aa7 | 13996 | bool |
f6ac5f3d | 13997 | remote_target::can_async_p () |
6426a772 | 13998 | { |
5d93a237 TT |
13999 | struct remote_state *rs = get_remote_state (); |
14000 | ||
3015c064 SM |
14001 | /* We don't go async if the user has explicitly prevented it with the |
14002 | "maint set target-async" command. */ | |
c6ebd6cf | 14003 | if (!target_async_permitted) |
57810aa7 | 14004 | return false; |
75c99385 | 14005 | |
23860348 | 14006 | /* We're async whenever the serial device is. */ |
5d93a237 | 14007 | return serial_can_async_p (rs->remote_desc); |
6426a772 JM |
14008 | } |
14009 | ||
57810aa7 | 14010 | bool |
f6ac5f3d | 14011 | remote_target::is_async_p () |
6426a772 | 14012 | { |
5d93a237 TT |
14013 | struct remote_state *rs = get_remote_state (); |
14014 | ||
c6ebd6cf | 14015 | if (!target_async_permitted) |
75c99385 | 14016 | /* We only enable async when the user specifically asks for it. */ |
57810aa7 | 14017 | return false; |
75c99385 | 14018 | |
23860348 | 14019 | /* We're async whenever the serial device is. */ |
5d93a237 | 14020 | return serial_is_async_p (rs->remote_desc); |
6426a772 JM |
14021 | } |
14022 | ||
2acceee2 JM |
14023 | /* Pass the SERIAL event on and up to the client. One day this code |
14024 | will be able to delay notifying the client of an event until the | |
23860348 | 14025 | point where an entire packet has been received. */ |
2acceee2 | 14026 | |
2acceee2 JM |
14027 | static serial_event_ftype remote_async_serial_handler; |
14028 | ||
6426a772 | 14029 | static void |
819cc324 | 14030 | remote_async_serial_handler (struct serial *scb, void *context) |
6426a772 | 14031 | { |
2acceee2 JM |
14032 | /* Don't propogate error information up to the client. Instead let |
14033 | the client find out about the error by querying the target. */ | |
6a3753b3 | 14034 | inferior_event_handler (INF_REG_EVENT, NULL); |
2acceee2 JM |
14035 | } |
14036 | ||
74531fed PA |
14037 | static void |
14038 | remote_async_inferior_event_handler (gdb_client_data data) | |
14039 | { | |
6b8edb51 | 14040 | inferior_event_handler (INF_REG_EVENT, data); |
74531fed PA |
14041 | } |
14042 | ||
f6ac5f3d PA |
14043 | void |
14044 | remote_target::async (int enable) | |
2acceee2 | 14045 | { |
5d93a237 TT |
14046 | struct remote_state *rs = get_remote_state (); |
14047 | ||
6a3753b3 | 14048 | if (enable) |
2acceee2 | 14049 | { |
88b496c3 | 14050 | serial_async (rs->remote_desc, remote_async_serial_handler, rs); |
b7d2e916 PA |
14051 | |
14052 | /* If there are pending events in the stop reply queue tell the | |
14053 | event loop to process them. */ | |
953edf2b | 14054 | if (!rs->stop_reply_queue.empty ()) |
6b8edb51 | 14055 | mark_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14056 | /* For simplicity, below we clear the pending events token |
14057 | without remembering whether it is marked, so here we always | |
14058 | mark it. If there's actually no pending notification to | |
14059 | process, this ends up being a no-op (other than a spurious | |
14060 | event-loop wakeup). */ | |
14061 | if (target_is_non_stop_p ()) | |
14062 | mark_async_event_handler (rs->notif_state->get_pending_events_token); | |
2acceee2 JM |
14063 | } |
14064 | else | |
b7d2e916 PA |
14065 | { |
14066 | serial_async (rs->remote_desc, NULL, NULL); | |
6efcd9a8 PA |
14067 | /* If the core is disabling async, it doesn't want to be |
14068 | disturbed with target events. Clear all async event sources | |
14069 | too. */ | |
6b8edb51 | 14070 | clear_async_event_handler (rs->remote_async_inferior_event_token); |
6efcd9a8 PA |
14071 | if (target_is_non_stop_p ()) |
14072 | clear_async_event_handler (rs->notif_state->get_pending_events_token); | |
b7d2e916 | 14073 | } |
6426a772 JM |
14074 | } |
14075 | ||
65706a29 PA |
14076 | /* Implementation of the to_thread_events method. */ |
14077 | ||
f6ac5f3d PA |
14078 | void |
14079 | remote_target::thread_events (int enable) | |
65706a29 PA |
14080 | { |
14081 | struct remote_state *rs = get_remote_state (); | |
14082 | size_t size = get_remote_packet_size (); | |
65706a29 PA |
14083 | |
14084 | if (packet_support (PACKET_QThreadEvents) == PACKET_DISABLE) | |
14085 | return; | |
14086 | ||
8d64371b | 14087 | xsnprintf (rs->buf.data (), size, "QThreadEvents:%x", enable ? 1 : 0); |
65706a29 | 14088 | putpkt (rs->buf); |
8d64371b | 14089 | getpkt (&rs->buf, 0); |
65706a29 PA |
14090 | |
14091 | switch (packet_ok (rs->buf, | |
14092 | &remote_protocol_packets[PACKET_QThreadEvents])) | |
14093 | { | |
14094 | case PACKET_OK: | |
8d64371b TT |
14095 | if (strcmp (rs->buf.data (), "OK") != 0) |
14096 | error (_("Remote refused setting thread events: %s"), rs->buf.data ()); | |
65706a29 PA |
14097 | break; |
14098 | case PACKET_ERROR: | |
8d64371b | 14099 | warning (_("Remote failure reply: %s"), rs->buf.data ()); |
65706a29 PA |
14100 | break; |
14101 | case PACKET_UNKNOWN: | |
14102 | break; | |
14103 | } | |
14104 | } | |
14105 | ||
5a2468f5 | 14106 | static void |
981a3fb3 | 14107 | set_remote_cmd (const char *args, int from_tty) |
5a2468f5 | 14108 | { |
635c7e8a | 14109 | help_list (remote_set_cmdlist, "set remote ", all_commands, gdb_stdout); |
5a2468f5 JM |
14110 | } |
14111 | ||
d471ea57 | 14112 | static void |
981a3fb3 | 14113 | show_remote_cmd (const char *args, int from_tty) |
d471ea57 | 14114 | { |
37a105a1 | 14115 | /* We can't just use cmd_show_list here, because we want to skip |
427c3a89 | 14116 | the redundant "show remote Z-packet" and the legacy aliases. */ |
37a105a1 | 14117 | struct cmd_list_element *list = remote_show_cmdlist; |
79a45e25 | 14118 | struct ui_out *uiout = current_uiout; |
37a105a1 | 14119 | |
2e783024 | 14120 | ui_out_emit_tuple tuple_emitter (uiout, "showlist"); |
37a105a1 DJ |
14121 | for (; list != NULL; list = list->next) |
14122 | if (strcmp (list->name, "Z-packet") == 0) | |
14123 | continue; | |
427c3a89 DJ |
14124 | else if (list->type == not_set_cmd) |
14125 | /* Alias commands are exactly like the original, except they | |
14126 | don't have the normal type. */ | |
14127 | continue; | |
14128 | else | |
37a105a1 | 14129 | { |
2e783024 | 14130 | ui_out_emit_tuple option_emitter (uiout, "option"); |
a744cf53 | 14131 | |
112e8700 SM |
14132 | uiout->field_string ("name", list->name); |
14133 | uiout->text (": "); | |
427c3a89 | 14134 | if (list->type == show_cmd) |
f5c4fcd9 | 14135 | do_show_command (NULL, from_tty, list); |
427c3a89 DJ |
14136 | else |
14137 | cmd_func (list, NULL, from_tty); | |
37a105a1 | 14138 | } |
d471ea57 | 14139 | } |
5a2468f5 | 14140 | |
0f71a2f6 | 14141 | |
23860348 | 14142 | /* Function to be called whenever a new objfile (shlib) is detected. */ |
dc8acb97 MS |
14143 | static void |
14144 | remote_new_objfile (struct objfile *objfile) | |
14145 | { | |
6b8edb51 | 14146 | remote_target *remote = get_current_remote_target (); |
5d93a237 | 14147 | |
6b8edb51 PA |
14148 | if (remote != NULL) /* Have a remote connection. */ |
14149 | remote->remote_check_symbols (); | |
dc8acb97 MS |
14150 | } |
14151 | ||
00bf0b85 SS |
14152 | /* Pull all the tracepoints defined on the target and create local |
14153 | data structures representing them. We don't want to create real | |
14154 | tracepoints yet, we don't want to mess up the user's existing | |
14155 | collection. */ | |
14156 | ||
f6ac5f3d PA |
14157 | int |
14158 | remote_target::upload_tracepoints (struct uploaded_tp **utpp) | |
d5551862 | 14159 | { |
00bf0b85 SS |
14160 | struct remote_state *rs = get_remote_state (); |
14161 | char *p; | |
d5551862 | 14162 | |
00bf0b85 SS |
14163 | /* Ask for a first packet of tracepoint definition. */ |
14164 | putpkt ("qTfP"); | |
8d64371b TT |
14165 | getpkt (&rs->buf, 0); |
14166 | p = rs->buf.data (); | |
00bf0b85 | 14167 | while (*p && *p != 'l') |
d5551862 | 14168 | { |
00bf0b85 SS |
14169 | parse_tracepoint_definition (p, utpp); |
14170 | /* Ask for another packet of tracepoint definition. */ | |
14171 | putpkt ("qTsP"); | |
8d64371b TT |
14172 | getpkt (&rs->buf, 0); |
14173 | p = rs->buf.data (); | |
d5551862 | 14174 | } |
00bf0b85 | 14175 | return 0; |
d5551862 SS |
14176 | } |
14177 | ||
f6ac5f3d PA |
14178 | int |
14179 | remote_target::upload_trace_state_variables (struct uploaded_tsv **utsvp) | |
d5551862 | 14180 | { |
00bf0b85 | 14181 | struct remote_state *rs = get_remote_state (); |
d5551862 | 14182 | char *p; |
d5551862 | 14183 | |
00bf0b85 SS |
14184 | /* Ask for a first packet of variable definition. */ |
14185 | putpkt ("qTfV"); | |
8d64371b TT |
14186 | getpkt (&rs->buf, 0); |
14187 | p = rs->buf.data (); | |
00bf0b85 | 14188 | while (*p && *p != 'l') |
d5551862 | 14189 | { |
00bf0b85 SS |
14190 | parse_tsv_definition (p, utsvp); |
14191 | /* Ask for another packet of variable definition. */ | |
14192 | putpkt ("qTsV"); | |
8d64371b TT |
14193 | getpkt (&rs->buf, 0); |
14194 | p = rs->buf.data (); | |
d5551862 | 14195 | } |
00bf0b85 | 14196 | return 0; |
d5551862 SS |
14197 | } |
14198 | ||
c1e36e3e PA |
14199 | /* The "set/show range-stepping" show hook. */ |
14200 | ||
14201 | static void | |
14202 | show_range_stepping (struct ui_file *file, int from_tty, | |
14203 | struct cmd_list_element *c, | |
14204 | const char *value) | |
14205 | { | |
14206 | fprintf_filtered (file, | |
14207 | _("Debugger's willingness to use range stepping " | |
14208 | "is %s.\n"), value); | |
14209 | } | |
14210 | ||
6b8edb51 PA |
14211 | /* Return true if the vCont;r action is supported by the remote |
14212 | stub. */ | |
14213 | ||
14214 | bool | |
14215 | remote_target::vcont_r_supported () | |
14216 | { | |
14217 | if (packet_support (PACKET_vCont) == PACKET_SUPPORT_UNKNOWN) | |
14218 | remote_vcont_probe (); | |
14219 | ||
14220 | return (packet_support (PACKET_vCont) == PACKET_ENABLE | |
14221 | && get_remote_state ()->supports_vCont.r); | |
14222 | } | |
14223 | ||
c1e36e3e PA |
14224 | /* The "set/show range-stepping" set hook. */ |
14225 | ||
14226 | static void | |
eb4c3f4a | 14227 | set_range_stepping (const char *ignore_args, int from_tty, |
c1e36e3e PA |
14228 | struct cmd_list_element *c) |
14229 | { | |
6b8edb51 PA |
14230 | /* When enabling, check whether range stepping is actually supported |
14231 | by the target, and warn if not. */ | |
c1e36e3e PA |
14232 | if (use_range_stepping) |
14233 | { | |
6b8edb51 PA |
14234 | remote_target *remote = get_current_remote_target (); |
14235 | if (remote == NULL | |
14236 | || !remote->vcont_r_supported ()) | |
14237 | warning (_("Range stepping is not supported by the current target")); | |
c1e36e3e PA |
14238 | } |
14239 | } | |
14240 | ||
c906108c | 14241 | void |
fba45db2 | 14242 | _initialize_remote (void) |
c906108c | 14243 | { |
9a7071a8 | 14244 | struct cmd_list_element *cmd; |
6f937416 | 14245 | const char *cmd_name; |
ea9c271d | 14246 | |
0f71a2f6 | 14247 | /* architecture specific data */ |
29709017 DJ |
14248 | remote_g_packet_data_handle = |
14249 | gdbarch_data_register_pre_init (remote_g_packet_data_init); | |
d01949b6 | 14250 | |
d9f719f1 PA |
14251 | add_target (remote_target_info, remote_target::open); |
14252 | add_target (extended_remote_target_info, extended_remote_target::open); | |
cce74817 | 14253 | |
dc8acb97 | 14254 | /* Hook into new objfile notification. */ |
76727919 | 14255 | gdb::observers::new_objfile.attach (remote_new_objfile); |
dc8acb97 | 14256 | |
c906108c SS |
14257 | #if 0 |
14258 | init_remote_threadtests (); | |
14259 | #endif | |
14260 | ||
23860348 | 14261 | /* set/show remote ... */ |
d471ea57 | 14262 | |
1bedd215 | 14263 | add_prefix_cmd ("remote", class_maintenance, set_remote_cmd, _("\ |
590042fc | 14264 | Remote protocol specific variables.\n\ |
5a2468f5 | 14265 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14266 | the packets being used."), |
cff3e48b | 14267 | &remote_set_cmdlist, "set remote ", |
23860348 | 14268 | 0 /* allow-unknown */, &setlist); |
1bedd215 | 14269 | add_prefix_cmd ("remote", class_maintenance, show_remote_cmd, _("\ |
590042fc | 14270 | Remote protocol specific variables.\n\ |
5a2468f5 | 14271 | Configure various remote-protocol specific variables such as\n\ |
590042fc | 14272 | the packets being used."), |
cff3e48b | 14273 | &remote_show_cmdlist, "show remote ", |
23860348 | 14274 | 0 /* allow-unknown */, &showlist); |
5a2468f5 | 14275 | |
1a966eab AC |
14276 | add_cmd ("compare-sections", class_obscure, compare_sections_command, _("\ |
14277 | Compare section data on target to the exec file.\n\ | |
95cf3b38 DT |
14278 | Argument is a single section name (default: all loaded sections).\n\ |
14279 | To compare only read-only loaded sections, specify the -r option."), | |
c906108c SS |
14280 | &cmdlist); |
14281 | ||
1a966eab AC |
14282 | add_cmd ("packet", class_maintenance, packet_command, _("\ |
14283 | Send an arbitrary packet to a remote target.\n\ | |
c906108c SS |
14284 | maintenance packet TEXT\n\ |
14285 | If GDB is talking to an inferior via the GDB serial protocol, then\n\ | |
14286 | this command sends the string TEXT to the inferior, and displays the\n\ | |
14287 | response packet. GDB supplies the initial `$' character, and the\n\ | |
1a966eab | 14288 | terminating `#' character and checksum."), |
c906108c SS |
14289 | &maintenancelist); |
14290 | ||
7915a72c AC |
14291 | add_setshow_boolean_cmd ("remotebreak", no_class, &remote_break, _("\ |
14292 | Set whether to send break if interrupted."), _("\ | |
14293 | Show whether to send break if interrupted."), _("\ | |
14294 | If set, a break, instead of a cntrl-c, is sent to the remote target."), | |
9a7071a8 | 14295 | set_remotebreak, show_remotebreak, |
e707bbc2 | 14296 | &setlist, &showlist); |
9a7071a8 JB |
14297 | cmd_name = "remotebreak"; |
14298 | cmd = lookup_cmd (&cmd_name, setlist, "", -1, 1); | |
14299 | deprecate_cmd (cmd, "set remote interrupt-sequence"); | |
14300 | cmd_name = "remotebreak"; /* needed because lookup_cmd updates the pointer */ | |
14301 | cmd = lookup_cmd (&cmd_name, showlist, "", -1, 1); | |
14302 | deprecate_cmd (cmd, "show remote interrupt-sequence"); | |
14303 | ||
14304 | add_setshow_enum_cmd ("interrupt-sequence", class_support, | |
3e43a32a MS |
14305 | interrupt_sequence_modes, &interrupt_sequence_mode, |
14306 | _("\ | |
9a7071a8 JB |
14307 | Set interrupt sequence to remote target."), _("\ |
14308 | Show interrupt sequence to remote target."), _("\ | |
14309 | Valid value is \"Ctrl-C\", \"BREAK\" or \"BREAK-g\". The default is \"Ctrl-C\"."), | |
14310 | NULL, show_interrupt_sequence, | |
14311 | &remote_set_cmdlist, | |
14312 | &remote_show_cmdlist); | |
14313 | ||
14314 | add_setshow_boolean_cmd ("interrupt-on-connect", class_support, | |
14315 | &interrupt_on_connect, _("\ | |
590042fc PW |
14316 | Set whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ |
14317 | Show whether interrupt-sequence is sent to remote target when gdb connects to."), _("\ | |
9a7071a8 JB |
14318 | If set, interrupt sequence is sent to remote target."), |
14319 | NULL, NULL, | |
14320 | &remote_set_cmdlist, &remote_show_cmdlist); | |
c906108c | 14321 | |
23860348 | 14322 | /* Install commands for configuring memory read/write packets. */ |
11cf8741 | 14323 | |
1a966eab AC |
14324 | add_cmd ("remotewritesize", no_class, set_memory_write_packet_size, _("\ |
14325 | Set the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 | 14326 | &setlist); |
1a966eab AC |
14327 | add_cmd ("remotewritesize", no_class, show_memory_write_packet_size, _("\ |
14328 | Show the maximum number of bytes per memory write packet (deprecated)."), | |
11cf8741 JM |
14329 | &showlist); |
14330 | add_cmd ("memory-write-packet-size", no_class, | |
1a966eab AC |
14331 | set_memory_write_packet_size, _("\ |
14332 | Set the maximum number of bytes per memory-write packet.\n\ | |
14333 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14334 | default packet size. The actual limit is further reduced\n\ | |
14335 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14336 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14337 | &remote_set_cmdlist); |
14338 | add_cmd ("memory-read-packet-size", no_class, | |
1a966eab AC |
14339 | set_memory_read_packet_size, _("\ |
14340 | Set the maximum number of bytes per memory-read packet.\n\ | |
14341 | Specify the number of bytes in a packet or 0 (zero) for the\n\ | |
14342 | default packet size. The actual limit is further reduced\n\ | |
14343 | dependent on the target. Specify ``fixed'' to disable the\n\ | |
14344 | further restriction and ``limit'' to enable that restriction."), | |
11cf8741 JM |
14345 | &remote_set_cmdlist); |
14346 | add_cmd ("memory-write-packet-size", no_class, | |
14347 | show_memory_write_packet_size, | |
1a966eab | 14348 | _("Show the maximum number of bytes per memory-write packet."), |
11cf8741 JM |
14349 | &remote_show_cmdlist); |
14350 | add_cmd ("memory-read-packet-size", no_class, | |
14351 | show_memory_read_packet_size, | |
1a966eab | 14352 | _("Show the maximum number of bytes per memory-read packet."), |
11cf8741 | 14353 | &remote_show_cmdlist); |
c906108c | 14354 | |
055303e2 | 14355 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-limit", no_class, |
7915a72c AC |
14356 | &remote_hw_watchpoint_limit, _("\ |
14357 | Set the maximum number of target hardware watchpoints."), _("\ | |
14358 | Show the maximum number of target hardware watchpoints."), _("\ | |
055303e2 AB |
14359 | Specify \"unlimited\" for unlimited hardware watchpoints."), |
14360 | NULL, show_hardware_watchpoint_limit, | |
14361 | &remote_set_cmdlist, | |
14362 | &remote_show_cmdlist); | |
14363 | add_setshow_zuinteger_unlimited_cmd ("hardware-watchpoint-length-limit", | |
14364 | no_class, | |
480a3f21 PW |
14365 | &remote_hw_watchpoint_length_limit, _("\ |
14366 | Set the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
14367 | Show the maximum length (in bytes) of a target hardware watchpoint."), _("\ | |
055303e2 AB |
14368 | Specify \"unlimited\" to allow watchpoints of unlimited size."), |
14369 | NULL, show_hardware_watchpoint_length_limit, | |
480a3f21 | 14370 | &remote_set_cmdlist, &remote_show_cmdlist); |
055303e2 | 14371 | add_setshow_zuinteger_unlimited_cmd ("hardware-breakpoint-limit", no_class, |
7915a72c AC |
14372 | &remote_hw_breakpoint_limit, _("\ |
14373 | Set the maximum number of target hardware breakpoints."), _("\ | |
14374 | Show the maximum number of target hardware breakpoints."), _("\ | |
055303e2 AB |
14375 | Specify \"unlimited\" for unlimited hardware breakpoints."), |
14376 | NULL, show_hardware_breakpoint_limit, | |
b3f42336 | 14377 | &remote_set_cmdlist, &remote_show_cmdlist); |
501eef12 | 14378 | |
1b493192 PA |
14379 | add_setshow_zuinteger_cmd ("remoteaddresssize", class_obscure, |
14380 | &remote_address_size, _("\ | |
4d28ad1e AC |
14381 | Set the maximum size of the address (in bits) in a memory packet."), _("\ |
14382 | Show the maximum size of the address (in bits) in a memory packet."), NULL, | |
1b493192 PA |
14383 | NULL, |
14384 | NULL, /* FIXME: i18n: */ | |
14385 | &setlist, &showlist); | |
c906108c | 14386 | |
ca4f7f8b PA |
14387 | init_all_packet_configs (); |
14388 | ||
444abaca | 14389 | add_packet_config_cmd (&remote_protocol_packets[PACKET_X], |
bb572ddd | 14390 | "X", "binary-download", 1); |
0f71a2f6 | 14391 | |
444abaca | 14392 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCont], |
bb572ddd | 14393 | "vCont", "verbose-resume", 0); |
506fb367 | 14394 | |
89be2091 DJ |
14395 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QPassSignals], |
14396 | "QPassSignals", "pass-signals", 0); | |
14397 | ||
82075af2 JS |
14398 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QCatchSyscalls], |
14399 | "QCatchSyscalls", "catch-syscalls", 0); | |
14400 | ||
9b224c5e PA |
14401 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QProgramSignals], |
14402 | "QProgramSignals", "program-signals", 0); | |
14403 | ||
bc3b087d SDJ |
14404 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QSetWorkingDir], |
14405 | "QSetWorkingDir", "set-working-dir", 0); | |
14406 | ||
aefd8b33 SDJ |
14407 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartupWithShell], |
14408 | "QStartupWithShell", "startup-with-shell", 0); | |
14409 | ||
0a2dde4a SDJ |
14410 | add_packet_config_cmd (&remote_protocol_packets |
14411 | [PACKET_QEnvironmentHexEncoded], | |
14412 | "QEnvironmentHexEncoded", "environment-hex-encoded", | |
14413 | 0); | |
14414 | ||
14415 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentReset], | |
14416 | "QEnvironmentReset", "environment-reset", | |
14417 | 0); | |
14418 | ||
14419 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QEnvironmentUnset], | |
14420 | "QEnvironmentUnset", "environment-unset", | |
14421 | 0); | |
14422 | ||
444abaca | 14423 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSymbol], |
bb572ddd | 14424 | "qSymbol", "symbol-lookup", 0); |
dc8acb97 | 14425 | |
444abaca | 14426 | add_packet_config_cmd (&remote_protocol_packets[PACKET_P], |
bb572ddd | 14427 | "P", "set-register", 1); |
d471ea57 | 14428 | |
444abaca | 14429 | add_packet_config_cmd (&remote_protocol_packets[PACKET_p], |
bb572ddd | 14430 | "p", "fetch-register", 1); |
b96ec7ac | 14431 | |
444abaca | 14432 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z0], |
bb572ddd | 14433 | "Z0", "software-breakpoint", 0); |
d471ea57 | 14434 | |
444abaca | 14435 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z1], |
bb572ddd | 14436 | "Z1", "hardware-breakpoint", 0); |
d471ea57 | 14437 | |
444abaca | 14438 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z2], |
bb572ddd | 14439 | "Z2", "write-watchpoint", 0); |
d471ea57 | 14440 | |
444abaca | 14441 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z3], |
bb572ddd | 14442 | "Z3", "read-watchpoint", 0); |
d471ea57 | 14443 | |
444abaca | 14444 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Z4], |
bb572ddd | 14445 | "Z4", "access-watchpoint", 0); |
d471ea57 | 14446 | |
0876f84a DJ |
14447 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_auxv], |
14448 | "qXfer:auxv:read", "read-aux-vector", 0); | |
802188a7 | 14449 | |
c78fa86a GB |
14450 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_exec_file], |
14451 | "qXfer:exec-file:read", "pid-to-exec-file", 0); | |
14452 | ||
23181151 DJ |
14453 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_features], |
14454 | "qXfer:features:read", "target-features", 0); | |
14455 | ||
cfa9d6d9 DJ |
14456 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries], |
14457 | "qXfer:libraries:read", "library-info", 0); | |
14458 | ||
2268b414 JK |
14459 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_libraries_svr4], |
14460 | "qXfer:libraries-svr4:read", "library-info-svr4", 0); | |
14461 | ||
fd79ecee DJ |
14462 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_memory_map], |
14463 | "qXfer:memory-map:read", "memory-map", 0); | |
14464 | ||
07e059b5 VP |
14465 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_osdata], |
14466 | "qXfer:osdata:read", "osdata", 0); | |
14467 | ||
dc146f7c VP |
14468 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_threads], |
14469 | "qXfer:threads:read", "threads", 0); | |
14470 | ||
4aa995e1 PA |
14471 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_read], |
14472 | "qXfer:siginfo:read", "read-siginfo-object", 0); | |
14473 | ||
14474 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_siginfo_write], | |
14475 | "qXfer:siginfo:write", "write-siginfo-object", 0); | |
14476 | ||
b3b9301e PA |
14477 | add_packet_config_cmd |
14478 | (&remote_protocol_packets[PACKET_qXfer_traceframe_info], | |
eb9fe518 | 14479 | "qXfer:traceframe-info:read", "traceframe-info", 0); |
b3b9301e | 14480 | |
169081d0 TG |
14481 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_uib], |
14482 | "qXfer:uib:read", "unwind-info-block", 0); | |
14483 | ||
444abaca | 14484 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTLSAddr], |
38691318 | 14485 | "qGetTLSAddr", "get-thread-local-storage-address", |
38691318 KB |
14486 | 0); |
14487 | ||
711e434b PM |
14488 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qGetTIBAddr], |
14489 | "qGetTIBAddr", "get-thread-information-block-address", | |
14490 | 0); | |
14491 | ||
40ab02ce MS |
14492 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bc], |
14493 | "bc", "reverse-continue", 0); | |
14494 | ||
14495 | add_packet_config_cmd (&remote_protocol_packets[PACKET_bs], | |
14496 | "bs", "reverse-step", 0); | |
14497 | ||
be2a5f71 DJ |
14498 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSupported], |
14499 | "qSupported", "supported-packets", 0); | |
14500 | ||
08388c79 DE |
14501 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qSearch_memory], |
14502 | "qSearch:memory", "search-memory", 0); | |
14503 | ||
bd3eecc3 PA |
14504 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qTStatus], |
14505 | "qTStatus", "trace-status", 0); | |
14506 | ||
15a201c8 GB |
14507 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_setfs], |
14508 | "vFile:setfs", "hostio-setfs", 0); | |
14509 | ||
a6b151f1 DJ |
14510 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_open], |
14511 | "vFile:open", "hostio-open", 0); | |
14512 | ||
14513 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pread], | |
14514 | "vFile:pread", "hostio-pread", 0); | |
14515 | ||
14516 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_pwrite], | |
14517 | "vFile:pwrite", "hostio-pwrite", 0); | |
14518 | ||
14519 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_close], | |
14520 | "vFile:close", "hostio-close", 0); | |
14521 | ||
14522 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_unlink], | |
14523 | "vFile:unlink", "hostio-unlink", 0); | |
14524 | ||
b9e7b9c3 UW |
14525 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_readlink], |
14526 | "vFile:readlink", "hostio-readlink", 0); | |
14527 | ||
0a93529c GB |
14528 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vFile_fstat], |
14529 | "vFile:fstat", "hostio-fstat", 0); | |
14530 | ||
2d717e4f DJ |
14531 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vAttach], |
14532 | "vAttach", "attach", 0); | |
14533 | ||
14534 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vRun], | |
14535 | "vRun", "run", 0); | |
14536 | ||
a6f3e723 SL |
14537 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QStartNoAckMode], |
14538 | "QStartNoAckMode", "noack", 0); | |
14539 | ||
82f73884 PA |
14540 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vKill], |
14541 | "vKill", "kill", 0); | |
14542 | ||
0b16c5cf PA |
14543 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qAttached], |
14544 | "qAttached", "query-attached", 0); | |
14545 | ||
782b2b07 | 14546 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalTracepoints], |
3e43a32a MS |
14547 | "ConditionalTracepoints", |
14548 | "conditional-tracepoints", 0); | |
3788aec7 LM |
14549 | |
14550 | add_packet_config_cmd (&remote_protocol_packets[PACKET_ConditionalBreakpoints], | |
14551 | "ConditionalBreakpoints", | |
14552 | "conditional-breakpoints", 0); | |
14553 | ||
d3ce09f5 SS |
14554 | add_packet_config_cmd (&remote_protocol_packets[PACKET_BreakpointCommands], |
14555 | "BreakpointCommands", | |
14556 | "breakpoint-commands", 0); | |
14557 | ||
7a697b8d SS |
14558 | add_packet_config_cmd (&remote_protocol_packets[PACKET_FastTracepoints], |
14559 | "FastTracepoints", "fast-tracepoints", 0); | |
782b2b07 | 14560 | |
409873ef SS |
14561 | add_packet_config_cmd (&remote_protocol_packets[PACKET_TracepointSource], |
14562 | "TracepointSource", "TracepointSource", 0); | |
14563 | ||
d914c394 SS |
14564 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAllow], |
14565 | "QAllow", "allow", 0); | |
14566 | ||
0fb4aa4b PA |
14567 | add_packet_config_cmd (&remote_protocol_packets[PACKET_StaticTracepoints], |
14568 | "StaticTracepoints", "static-tracepoints", 0); | |
14569 | ||
1e4d1764 YQ |
14570 | add_packet_config_cmd (&remote_protocol_packets[PACKET_InstallInTrace], |
14571 | "InstallInTrace", "install-in-trace", 0); | |
14572 | ||
0fb4aa4b PA |
14573 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_statictrace_read], |
14574 | "qXfer:statictrace:read", "read-sdata-object", 0); | |
14575 | ||
78d85199 YQ |
14576 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_fdpic], |
14577 | "qXfer:fdpic:read", "read-fdpic-loadmap", 0); | |
14578 | ||
03583c20 UW |
14579 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QDisableRandomization], |
14580 | "QDisableRandomization", "disable-randomization", 0); | |
14581 | ||
d1feda86 YQ |
14582 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QAgent], |
14583 | "QAgent", "agent", 0); | |
14584 | ||
f6f899bf HAQ |
14585 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QTBuffer_size], |
14586 | "QTBuffer:size", "trace-buffer-size", 0); | |
14587 | ||
9accd112 MM |
14588 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_off], |
14589 | "Qbtrace:off", "disable-btrace", 0); | |
14590 | ||
14591 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_bts], | |
b20a6524 MM |
14592 | "Qbtrace:bts", "enable-btrace-bts", 0); |
14593 | ||
14594 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_pt], | |
14595 | "Qbtrace:pt", "enable-btrace-pt", 0); | |
9accd112 MM |
14596 | |
14597 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace], | |
14598 | "qXfer:btrace", "read-btrace", 0); | |
14599 | ||
f4abbc16 MM |
14600 | add_packet_config_cmd (&remote_protocol_packets[PACKET_qXfer_btrace_conf], |
14601 | "qXfer:btrace-conf", "read-btrace-conf", 0); | |
14602 | ||
d33501a5 MM |
14603 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_bts_size], |
14604 | "Qbtrace-conf:bts:size", "btrace-conf-bts-size", 0); | |
14605 | ||
73b8c1fd PA |
14606 | add_packet_config_cmd (&remote_protocol_packets[PACKET_multiprocess_feature], |
14607 | "multiprocess-feature", "multiprocess-feature", 0); | |
14608 | ||
f7e6eed5 PA |
14609 | add_packet_config_cmd (&remote_protocol_packets[PACKET_swbreak_feature], |
14610 | "swbreak-feature", "swbreak-feature", 0); | |
14611 | ||
14612 | add_packet_config_cmd (&remote_protocol_packets[PACKET_hwbreak_feature], | |
14613 | "hwbreak-feature", "hwbreak-feature", 0); | |
14614 | ||
89245bc0 DB |
14615 | add_packet_config_cmd (&remote_protocol_packets[PACKET_fork_event_feature], |
14616 | "fork-event-feature", "fork-event-feature", 0); | |
14617 | ||
14618 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vfork_event_feature], | |
14619 | "vfork-event-feature", "vfork-event-feature", 0); | |
14620 | ||
b20a6524 MM |
14621 | add_packet_config_cmd (&remote_protocol_packets[PACKET_Qbtrace_conf_pt_size], |
14622 | "Qbtrace-conf:pt:size", "btrace-conf-pt-size", 0); | |
14623 | ||
750ce8d1 YQ |
14624 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vContSupported], |
14625 | "vContSupported", "verbose-resume-supported", 0); | |
14626 | ||
94585166 DB |
14627 | add_packet_config_cmd (&remote_protocol_packets[PACKET_exec_event_feature], |
14628 | "exec-event-feature", "exec-event-feature", 0); | |
14629 | ||
de979965 PA |
14630 | add_packet_config_cmd (&remote_protocol_packets[PACKET_vCtrlC], |
14631 | "vCtrlC", "ctrl-c", 0); | |
14632 | ||
65706a29 PA |
14633 | add_packet_config_cmd (&remote_protocol_packets[PACKET_QThreadEvents], |
14634 | "QThreadEvents", "thread-events", 0); | |
14635 | ||
f2faf941 PA |
14636 | add_packet_config_cmd (&remote_protocol_packets[PACKET_no_resumed], |
14637 | "N stop reply", "no-resumed-stop-reply", 0); | |
14638 | ||
0b736949 DB |
14639 | /* Assert that we've registered "set remote foo-packet" commands |
14640 | for all packet configs. */ | |
ca4f7f8b PA |
14641 | { |
14642 | int i; | |
14643 | ||
14644 | for (i = 0; i < PACKET_MAX; i++) | |
14645 | { | |
14646 | /* Ideally all configs would have a command associated. Some | |
14647 | still don't though. */ | |
14648 | int excepted; | |
14649 | ||
14650 | switch (i) | |
14651 | { | |
14652 | case PACKET_QNonStop: | |
ca4f7f8b PA |
14653 | case PACKET_EnableDisableTracepoints_feature: |
14654 | case PACKET_tracenz_feature: | |
14655 | case PACKET_DisconnectedTracing_feature: | |
14656 | case PACKET_augmented_libraries_svr4_read_feature: | |
936d2992 PA |
14657 | case PACKET_qCRC: |
14658 | /* Additions to this list need to be well justified: | |
14659 | pre-existing packets are OK; new packets are not. */ | |
ca4f7f8b PA |
14660 | excepted = 1; |
14661 | break; | |
14662 | default: | |
14663 | excepted = 0; | |
14664 | break; | |
14665 | } | |
14666 | ||
14667 | /* This catches both forgetting to add a config command, and | |
14668 | forgetting to remove a packet from the exception list. */ | |
14669 | gdb_assert (excepted == (remote_protocol_packets[i].name == NULL)); | |
14670 | } | |
14671 | } | |
14672 | ||
37a105a1 DJ |
14673 | /* Keep the old ``set remote Z-packet ...'' working. Each individual |
14674 | Z sub-packet has its own set and show commands, but users may | |
14675 | have sets to this variable in their .gdbinit files (or in their | |
14676 | documentation). */ | |
e9e68a56 | 14677 | add_setshow_auto_boolean_cmd ("Z-packet", class_obscure, |
7915a72c | 14678 | &remote_Z_packet_detect, _("\ |
590042fc PW |
14679 | Set use of remote protocol `Z' packets."), _("\ |
14680 | Show use of remote protocol `Z' packets."), _("\ | |
3b64bf98 | 14681 | When set, GDB will attempt to use the remote breakpoint and watchpoint\n\ |
7915a72c | 14682 | packets."), |
e9e68a56 | 14683 | set_remote_protocol_Z_packet_cmd, |
3e43a32a MS |
14684 | show_remote_protocol_Z_packet_cmd, |
14685 | /* FIXME: i18n: Use of remote protocol | |
14686 | `Z' packets is %s. */ | |
e9e68a56 | 14687 | &remote_set_cmdlist, &remote_show_cmdlist); |
449092f6 | 14688 | |
a6b151f1 | 14689 | add_prefix_cmd ("remote", class_files, remote_command, _("\ |
590042fc | 14690 | Manipulate files on the remote system.\n\ |
a6b151f1 DJ |
14691 | Transfer files to and from the remote target system."), |
14692 | &remote_cmdlist, "remote ", | |
14693 | 0 /* allow-unknown */, &cmdlist); | |
14694 | ||
14695 | add_cmd ("put", class_files, remote_put_command, | |
14696 | _("Copy a local file to the remote system."), | |
14697 | &remote_cmdlist); | |
14698 | ||
14699 | add_cmd ("get", class_files, remote_get_command, | |
14700 | _("Copy a remote file to the local system."), | |
14701 | &remote_cmdlist); | |
14702 | ||
14703 | add_cmd ("delete", class_files, remote_delete_command, | |
14704 | _("Delete a remote file."), | |
14705 | &remote_cmdlist); | |
14706 | ||
2d717e4f | 14707 | add_setshow_string_noescape_cmd ("exec-file", class_files, |
94585166 | 14708 | &remote_exec_file_var, _("\ |
590042fc PW |
14709 | Set the remote pathname for \"run\"."), _("\ |
14710 | Show the remote pathname for \"run\"."), NULL, | |
94585166 DB |
14711 | set_remote_exec_file, |
14712 | show_remote_exec_file, | |
14713 | &remote_set_cmdlist, | |
14714 | &remote_show_cmdlist); | |
2d717e4f | 14715 | |
c1e36e3e PA |
14716 | add_setshow_boolean_cmd ("range-stepping", class_run, |
14717 | &use_range_stepping, _("\ | |
14718 | Enable or disable range stepping."), _("\ | |
14719 | Show whether target-assisted range stepping is enabled."), _("\ | |
14720 | If on, and the target supports it, when stepping a source line, GDB\n\ | |
14721 | tells the target to step the corresponding range of addresses itself instead\n\ | |
14722 | of issuing multiple single-steps. This speeds up source level\n\ | |
14723 | stepping. If off, GDB always issues single-steps, even if range\n\ | |
14724 | stepping is supported by the target. The default is on."), | |
14725 | set_range_stepping, | |
14726 | show_range_stepping, | |
14727 | &setlist, | |
14728 | &showlist); | |
14729 | ||
ed2b7c17 TT |
14730 | add_setshow_zinteger_cmd ("watchdog", class_maintenance, &watchdog, _("\ |
14731 | Set watchdog timer."), _("\ | |
14732 | Show watchdog timer."), _("\ | |
14733 | When non-zero, this timeout is used instead of waiting forever for a target\n\ | |
14734 | to finish a low-level step or continue operation. If the specified amount\n\ | |
14735 | of time passes without a response from the target, an error occurs."), | |
14736 | NULL, | |
14737 | show_watchdog, | |
14738 | &setlist, &showlist); | |
14739 | ||
449092f6 CV |
14740 | /* Eventually initialize fileio. See fileio.c */ |
14741 | initialize_remote_fileio (remote_set_cmdlist, remote_show_cmdlist); | |
c906108c | 14742 | } |